2...Na6 3.b5 Nc5 4.Be5 d6 5.Bb2 Na4 6.Bd4 h6 7.e3 c5 8.bc6 bc6 9.Qf3 Be6 (better is 9...Bd7!?+/-) 10.Qc6 Bd7 11.Qf3 Rc8 12.Ne2 Bc6 13.e4 a6 14.Nec3 Nb6 (14...Nc5+-) 15.Ba6 Nc4 (15...Rb8+-) 16.Bc4 d5 (16...Nf6 17.a4+-) 17.ed5 Bd7 18.Qe3 1–0. Fritz 8 – NN, Blitz:2'+6", 2003.

2...Bb4 (--> 1.b4 e5 2.Bb2 Bb4).

2...b5 (--> 1.b4 b5 2.Bb2 e5).

2...Bc5?? 3.bc5 Qf6 (3...Nc6 4.Nf3 Qe7 5.d4+-) 4.e3 (4.e4 Qe7 5.Qg4 f6+-) 4...Nh6 (4...Nc6 5.Nc3+-) 5.d4 (5.f4 d6+-) 5...Ng4 (5...d6+-) 6.Qg4 (6.Qg4 Nc6 7.de5+-) 1–0. makaveli1982 – mr me, internet, 2007.

2...Ke7?? 3.Be5 Ke6 (3...Ke8 4.a3+/-) 4.d4 (4.Nf3 Nf6+/-) 4...d6 (4...Bb4 5.c3 Bf8 6.e4+/-) 5.Bg3 Ke7 (5...Nf6 6.e3+/-) 6.Nf3 Ke8 7.e3 Bg4 8.Nbd2 Nf6 9.c3 Be7 10.Be2 Nbd7 11.0-0 Nh5 12.Ne4 (12.e4 a5+-) 12...Ndf6 (12...d5 13.Ne5 Be2 14.Qe2+/-) 13.Nf6 Bf6 14.h3 (14.Bf4 Nf4 15.ef4 Kf8+-) 14...Ng3+/- 15.fg3 (worse is 15.hg4 Nf1 16.Bf1 h5 17.Qa4 c6=) 15...Bd7 16.Bc4 c6 (16...b5 17.Bd3+/-) 17.Re1 (17.e4 b5 18.Bb3 Rf8+-) 17...Kf8 (17...b5 18.Bb3+/-) 18.e4 g6 (18...b5 19.Bb3+-) 19.e5 de5 20.de5 Be7 21.Nd4 White plans e6 21...Kg7 22.Qf3 Rf8 23.Rad1 Qc8 (23...Qc7 24.a3+-) 24.a4 (24.Rf1 a5+-) 24...Kg8 (24...c5 25.Bd5 cd4 A) worse is 26.Rd4 A1) worse is 26...Ba4 27.Bb7 Qc7 28.Ba8 Ra8 29.Rf4+= (worse is 29.Qa8 Bc6 30.Qc6 Qc6+=); A2) 26...Bc6–/+; B) 26.Bb7 Qc3 27.Ba8 Ba4 28.Ra1+/-) 25.e6 fe6 (25...fe6 26.Qe3 Kh8+-). mwojo (1745) – supertimchan (2075), net–chess.com, 2004.

2...Ne7?? 3.Be5 d5 4.a3+= Ng6 5.Bb2+/- c5 6.bc5 (6…d4 7.e3 Bc5 8.Nf3 de3 9.de3+/-) 1–0. PeterRs – smoothmovermovesagain, ChessWorld.net, 2006.

2.Bb2 a5 3.ba5 Ra5 (--> 1.b4 a5 2.ba5 Ra5 3.Bb2 e5).

3.b5 (--> 1.b4 a5 2.b5 e5 3.Bb2).

3.b5 d6 4.e3 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5).

3.b5 f6 (--> 1.b4 e5 2.Bb2 f6 3.b5 a5).

3.Be5 ab4 4.d3 Bd6?? (better is 4...d5=+) 5.Bg7+- b3 6.cb3 Bb4 7.Nd2 f6 8.Bh8 Bc3 9.Rc1 Bb2 10.Rc2 Be5 (10...Ra2 11.Nb1 Kf7 12.Qd2+-) 11.Ngf3 d6 (11...Nc6 12.e3 Qe7 13.Ne5 Ne5 14.Be2+-) 12.Ne5 (12.e3!? Qe7+-) 12...de5 13.e4 Be6 14.Qh5 Bf7 15.Qh7 Qd4 (15...Nc6 16.Rc1+-) 16.Be2 Qa1 (16...Nc6 17.0-0 Qd8 18.Bh5 Bh5 19.Qh5 Kf8 20.f4 ef4 21.Qg4+-) 17.Bd1 Qd4 18.Rc7 Nd7 19.0-0 Ra2 (19...Ne7 20.Bg7 Kd8 21.Rc2+-) 20.Bh5 (better is 20.Bg4 Ne7 21.Rd7+-) 20...Nh6 21.Bf7 Nf7 22.Bf6! Ra6 (22...Nf6 23.Qf7) 23.Qg8 Nf8 24.Qf7# 1–0. audrey – ashwinpanjabi, Live Game Caissa's Web, 2004.

3.Be5 ab4 4.e3 Qe7 (better 4...Nf6=) 5.Bc7+- Nc6 6.Nf3 Ra4 (6...Nf6 7.Bf4+-) 7.Bb5+- Ra7 (7...Ra8 8.0-0+-) 8.0-0 Qf6 (8...b6 9.Bb6 Rb7 10.Bc6 dc6 11.Bd4+-) 9.d4 Qg6 (9...d5 10.c4 bc3 11.Nc3+-) 10.Nbd2 (10.d5 Nce7+-) 10...b3 (better 10...Nf6+-) 11.Bd3 (11.Bd3 bc2 12.Qc2+-) 1–0. Wall,Bill – Vudo, internet, 2001.

3.a3 a6 (--> 1.b4 a6 2.Bb2 Nc6 3.a3 e5).

3.a3 Nf6 (--> 2...Nf6 3.a3 Nc6).

3.a3 a5!? =.

3.a3 Qg5 4.Nf3+/- Qe7!? 5.Ne5 a5 +/-.

3.a3 Qg5 4.Nf3+/- Qf4 5.Be5+- Qf5 6.Bc7 Na6 7.Be5 f6 8.Bb2 Bd6 9.e3 Bb4 (9...Ne7+-) 10.ab4 Nb4 11.Na3 Ne7 12.c3 (12.c3 Nd3 13.Bd3 Qd3 14.Qe2 Qe2 15.Ke2+-) 1–0. Fournier,Frederic – martincito32, Active, 2008.

3.a3 Qg5 4.Nf3+/- Qf5 5.Be5 d6 6.Bb2 Be6 7.d3 Nf6 8.e4 Qh5 9.Nd4 Qd1 10.Kd1 Bg4 11.f3 Bh5 (11...Bd7!?+/-) 12.g4 Bg6 13.h4 h6 14.h5 Bh7 15.Nb5 Na6 16.N1c3 (16.Bf6 gf6 17.d4 c6+-) 16...0-0-0 (better is 16...Be7!?+/-) 17.Na7+- Kb8 18.Nab5 d5 19.ed5 Bd6? (19...c6 20.Nd4 cd5+-) 20.Nd6 Rd6 21.Bg2 Nd5 (21...Rdd8+-) 22.Nd5 Rd5 23.f4 (better is 23.Bg7!? Bd3 24.cd3 Rh7+-) 23...Rdd8 24.f5 (better is 24.Bg7 Rhg8 25.Bh6 Rd6+-) 24...f6 25.Kd2 Bg8 26.Rhe1 Bd5 27.Bd5 Rd5 28.Re6 Kc8 29.Rae1 Rd7 30.Re8 Rd8 31.Rh8 Rh8 32.Re7 Rg8 33.c4 Kd8 34.Re4 Re8 35.Re8 Ke8 36.d4 Kd7 37.Ke3 Nb8 38.Ke4 Nc6 39.d5 Ne7 40.Bd4 Nc8 41.c5 b6 42.cb6 cb6 43.a4 Kc7 44.a5 ba5 45.ba5 Nd6 46.Kd3 Kb7 47.Bb6 Ka6 48.Bc7 Nc8 49.d6 Kb7 50.Bb6 Nd6? 51.Kd4 Ka6 52.Bc5 Nb7? 53.Bf8 Ka5 54.Bg7 Kb5 55.Bf6 Kc6 56.Bg7 Nd8 57.Bh6 Nf7 58.Bf4 Kd7 59.g5 Ke8 60.h6 Kf8 61.Be5 Kg8 62.Kd5 Ng5 63.f6 Nf7? 64.Ke6 Nh6 65.f7?? Nf7= 66.Bb8 Kg7 67.Be5 Kg6 68.Ba1 Ng5 69.Kd5 Kh5 70.Kc6 Nh3 71.Kb5 Kg4 72.Ka6 Kf3 73.Kb7 Ke2 74.Kc8 Nf2 75.Kb7 Nd3 76.Kc8 Kd1 77.Bh8 Kc2 78.Kb7 Kb3 79.Kc8 Kc4 80.Kd7 Kd5 81.Ke8 Ke6 0–1. Fournier,Frederic – titocento, Active (5/0), 2004.

3.a3 d5 4.Be5+/- f6 5.Bd4 Bd6 6.g3 a5 7.Qc1 ab4= 8.Qb2? c5–/+ 9.Be3 Ra3?? 10.Bg5?? Be5–+ 11.c3 d4 12.cb4? cb4?? 13.Na3+/- ba3 14.Qa3?? fg5=+ 15.f3 Nf6 16.Qa4 Bd7 17.Qa5 Qa5 18.Ra5–/+ Nc6 19.Ra8 Nd8 20.Nh3 g4 21.fg4 Bc6–+ 22.Rg1 Ng4 23.Ng5 Rf8?? 24.Ne6+/- Nh2? 25.Rd8+- Kf7 26.Rf8 Kg6 27.Rc8 (27…Kf6 28.Nf4+-; 27.Bg2!? Bg2 28.Rg2 Ng4+-) 1–0. toon magpie – Izzy5150, ChessWorld.net, 2005.

3.e3 f6? (--> 1.b4 g5 2.Bb2 f6 3.e3 e5).

3.Be5 f6 4.Bc3 Nh6 5.e3 Rg8 6.Bc4 d5 7.Bd3 Bg7 8.Qh5 Kf8 9.h3 f5 10.Nf3 g4 11.hg4 fg4 12.Ng5 Nc6 13.Nh7 Ke7 14.Bg7 Rg7 15.Qh6 (15...Qg8 16.Nf6+-) 1–0. Wall,Bill (2365) – Piccilo, Microsoft Gaming Zone, 1999.

3.Be5 Bg7?? 4.Bg7+- Nf6 5.Bh8 d5 6.e3 c5 (6...Bg4 7.Nf3+-) 7.bc5 Qa5 (7...Ne4 8.Qh5 Bf5 9.Nc3+-) 8.Bf6 Bf5 9.Nc3 Nc6 10.Nb5 Qa4 11.Nd6 Kd7 12.Nf5 Nb4 13.Nd4 Qa5 14.a3 (14.Qg4 Ke8 15.Bb5 Qb5 16.Nb5 Kf8 17.Qg5 Nc2 18.Kd1 Ne3 19.fe3 h6 20.Bg7 Ke8 21.Qe5 Kd8 22.Qd6 Ke8 23.Nc7) 14...Qa4 15.ab4 Qb4 16.Bb5 Qb5 17.Nb5 a6 18.Qg4 (18.Qg4 Kc6 19.Nd4 Kc7 20.Qg3 Kc8 21.Nb5 Kd7 22.Qd6 Ke8 23.Nc7) 1-0. BeepBeepImAJeep - Thiago19, lichess.org, 2017.

3.a3 d6 (--> 1.b4 e5 2.Bb2 d6 3.a3 a6).

3.a3 d6 4.e3 Nf6 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 a6).

3.e3 f6 4.a3 (--> 1.b4 e5 2.Bb2 f6 3.a3 a6 4.e3).

3.Be5 d6 4.Bb2 Nc6 5.a3+= Nf6 6.e3 Bf5 7.Be2 h6 8.Nf3+/- Be4 9.0-0 d5 10.c4+- Qd6 11.d3 Bg6 12.Qa4 Ng4?! 13.Nc3 d4 14.ed4 Bf5 15.d5 b5 16.Nb5 Qd8 17.Nbd4 Bd7 18.Nc6 Nf6 19.Bd1 Bc6 20.Qc6 Nd7 21.Re1 Be7 22.Bg7 Rg8 23.Qh6 Nb6 24.Ba4 (24…Nd7 25.Qh7 Rf8 26.Bf8 c6 27.Be7 Qe7 28.Qh8 Nf8 29.Bc6 Kd8 30.Re7 Ke7 31.Re1 Ne6 32.Re6 fe6 33.Qg7 Kd8 34.Qd7#) 1–0. pierre (1945) – Abuloai, internet, 2006.

(--> 1.b4 a6 2.Bb2 Nc6 3.a3 e5).

4.e3 d5 (--> 1.b4 d5 2.Bb2 a6 3.e3 Nc6 4.a3 e5).

4.Bg7 Nc6 5.Bh8 f6 6.c3 Bc5 7.d4 Bf8 8.Qb3 d5 9.e4! Be6 10.e5 b5 11.ef6 Qd7 12.Bd3 0-0-0 13.Nf3 Bh6 14.0-0 Rf8 15.Ne5 Ne5 16.de5 d4 17.c4 Bf4 18.Bg7 Rf7 19.Bh7 Bc4 20.Qd1 Bf1 21.Bg8 Rg7 22.fg7 Bg2 23.Kg2 Qg7 24.Kf1 Qg8 25.Qd4 Bh2 26.Nd2 Qg5 27.Nf3 Qh5 28.Nh2 Qh2 29.Qg4 Kb8 30.Re1 Qh1 31.Ke2 Qd5 32.Qf4 Qa2 33.Kf1 Qe6 34.Qf8 Kb7 35.Qf3 c6 36.Qc3 c5 37.f4 b4 38.Qc5 b3 39.Qb4 Ka7 40.Re3 b2 41.Qb2 Qc4 42.Ke1 Qf4 43.Qf2 Qb4 44.Rc3 Kb7 45.Qc5 Qe4 46.Re3 Qh1 47.Ke2 Qh2 48.Kd3 Qh7 49.Kd4 Qh4 50.Re4 Qf2 51.Kd5 Qd2 52.Rd4 Qg2 53.Kd6 Qg6 54.e6 Qg3 55.Kd7 Qg7 56.e7 a5 57.Qc6 Ka7 58.Qc7 Ka6 59.Rd6 Kb5 60.Rb6 (60…Ka4 61.Qc4 Ka3 62.Qb3#) 1–0. kostovist – Abuloai, internet, 2006.

4.Bg7 d5 5.Bh8 f6 6.e3 Qe7 7.Qf3 Be6 8.g4 Nc6 9.g5! 0-0-0 10.Bf6 Nf6 11.gf6 Qf7 12.Bh3 Bh3 13.Nh3 h6 14.Rg1 Ne5 15.Qf5 Nd7 16.Rg6 Bf8 17.Nc3 Be7 18.Nd5 Bd6 19.Rh6 c6 20.Nb6 Kc7 21.Nd7 Rd7 22.Ng5 Qg8 23.f7 Qc8 24.Rd6! Rf7 25.Qc8 (25...Kc8 26.Nf7+-; 25.Qf7 Kb8 26.Ne6 b5 27.Rd8 Qd8 28.Nd8 Kc8 29.Ne6 Kb8 30.Nc5 Kc8 31.Qd7 Kb8 32.Qb7#) 1–0. dusterstar (1605) – Abuloai, internet, 2006.

4.Bb2 Bb4?? 5.Bg7+- d6 6.Bh8 d5 7.e3 Be6 8.Qh5 Bd6 9.Qh7 f6 10.Be2 Nge7 11.Bf6 Bg8 12.Bh5 Kd7 13.Bg4 Be6 14.Be7 Be7 15.Be6 Ke6 16.Ne2 Qh8 17.Nf4 Kd6 18.Qh8 Rh8 19.Nc3 Nb4 20.Rb1 (20…a5 21.Nb5 Kd7 22.c3+-) 1–0. Woschkat,Karl_Heinz – Scheidgen,Hubert, DESC, 1998.

4.Bb2 Nb4 5.a3 Nc6 6.e3 d5 7.Nf3 Nf6 8.c4 dc4 (8...Be6 9.Qc2=) 9.Bc4 Na5 (9...Bd6 10.Qc2 0-0 11.d3=) 10.Qa4 c6 11.Ba2 b5 12.Qc2 Be6 13.0-0 Bc4 (13...Bd6!?=) 14.Bc3+/- Rc8 15.Ba5 Qa5 16.Bc4 bc4 17.Qc4 Bd6 18.Nc3 0-0 19.Rfb1 Rc7 (19...Rfe8 20.Rb7 Re7 21.Rab1+/-) 20.Rb3+- Rfc8 (20...Rd8 21.d3+-) 21.Rab1 Bc5 (21...Nd7 22.d3+-) 22.e4 Ba3? (better is 22...Re8+-) 23.Ra1 Qc5 24.Qa4 (24.Qa6?! Bb4+-) 24...Bb2 25.Rb2 1–0. Janek – AxelG, internet, 2017.

4.Bb2 Nb4 5.a3 Nc6 6.e4 Nf6 7.e5 Ne4 8.d4 d5 9.Bd3 Bf5 10.Ne2+= f6 11.f3+/- fe5 12.fe4 de4 13.Bc4 Bd6 14.0-0+- Qg5 15.Ng3 Qe3? 16.Kh1 g6 17.Nf5 gf5 18.Qh5 Kd8 19.c3 Qf4 20.Rf4 ef4 21.Qg5 Ne7 22.Be6 e3 23.c4 c5 24.dc5 e2 25.Nd2 Bc5 26.Bh8 Bf2 27.Nf3 Ke8 28.Qf6 (28...h5 29.Bf7 Kd7 30.Qe6 Kc7 31.Be5 Kd8 32.Qd6 Kc8 33.Be6#) 1–0. Fabbri (1720) – Abuloai, internet, 2006.

4.Bb2 Nb4 5.e3 Nf6 6.Nf3 Be7 (6...d5 7.a3 Nc6 8.Be2=+) 7.c3 (7.Be2 0-0=) 7...Nbd5 (7...Nc6 8.d4=+) 8.Be2 d6 (8...Nb6 9.a4=) 9.0-0 0-0 (9...Nb6 10.a4=) 10.c4 Nb6 11.Nc3 (11.Qc2 Re8=) 11...Be6 (11...d5 12.cd5 Nbd5 13.Nd5 Nd5 14.d4=) 12.d3 c5 (12...d5 13.Nd4=) 13.a4+= a5 14.Rb1 (14.e4 Nfd7+=) 14...Nc8 (14...d5 15.Qb3+=) 15.Ng5 Bf5 (15...d5 16.Qb3+=) 16.Bf3+- Rb8 17.Nce4 (better 17.Nge4+-) 17...Qc7? (better 17...d5!? 18.cd5 Nd5+=) 18.Nf6+- Bf6 19.Bf6 gf6 20.Ne4 Qe7 21.Nc3 Na7 (21...Qe5 22.Nd5+-) 22.Bb7! Rb7? (22...Rfd8+-) 23.Nd5 Rb1 (23...Qe6 24.Rb7 Nc6+-) 24.Ne7 Kg7 (24...Kh8 25.Qb1 Be6+-) 25.Nf5 (25.Nf5 Kh8 26.Qh5 Rb3 27.Qh6 Rg8 28.Qf6 Rg7 29.Qg7) 1–0. Bonetti,Shane – guest203, ICC, 2002.

4.Bb2 d5 5.a3+= b5 6.Nf3+/- Bd6?? 7.Bg7+- Nge7 8.Bh8 Ng6 9.Bg7 Be6 10.e3 Qe7 11.d4 f5 12.Bh6 0-0-0 13.Bg5 Qf8 14.Bd8 Qd8 15.a4 Bb4 16.c3 (16…Bd6 17.ab5 ab5 18.Ra8 Nb8 19.Bb5+-) 1–0. Alissa – athar, ChessWorld.net, 2005.

4.Bc3 d5 5.a3 Nf6 6.e3 Bd6 7.g3 Be6 8.Bg2 0-0 9.d3 Qd7 10.Ne2 Rae8 11.0-0 Ne5 12.Nf4 c6 13.Nd2 Bf5 14.e4 Bg4 15.f3+- d4 16.Bd4 (16…Be6 17.Ne6 Qe6 18.f4+-; 16.fg4 dc3 17.g5 Nfg4–/+) 1–0. sandtheory – athar, ChessWorld.net, 2005.

4.Bc3 Nc6 5.a3 Nge7 6.e3 Ng6 7.d4 d5 8.Qh5 Be7 9.Bd3 Kf7 10.Nf3 Be6 11.Nh4 f5 12.Nf5 Bf5 13.Bf5 Bf6 14.0-0 Nce7 15.Bg4 b5 16.Nd2 Rc8 17.Bc8 1–0. marus1 – mike, internet, 2001.

4.Bc3+= Nc6 5.e3 Nb4 6.Nh3 Nd5?? 7.Qh5+- g6 8.Qd5 d6 9.Ng5! Qe7 10.Bc4 fg5 11.Bh8 Nh6 12.Nc3 c6 13.Qe4 d5 14.Qe7 Be7 15.Bb3 Nf7 16.Bd4 c5 17.Nd5 cd4 18.Nc7 Kd8 19.Na8 de3 20.Bf7 Bf6 21.c3 ed2 22.Kd2 b5 23.Rhe1 Bb7 24.Re8 Kd7 25.Nb6 Kc7 26.Nd5 Bd5 27.Bd5 b4 28.Rc1 bc3 29.Rc3 Bc3 30.Kc3 Kd6 31.Kd4 h5 32.Re6 Kc7 33.Ra6 g4 34.Rg6 Kd7 35.Rh6 g3 36.hg3 h4 37.gh4 Ke7 38.a4 Kd7 39.a5 Kc7 40.a6 Kb8 41.Rh7 Kc8 42.a7 Kd8 43.a8Q# 1–0. pierred – siru, internet, 2008.

4.a3+= b5 (4...d6 5.Bb2+=) 5.Nf3 d6 (5...Nc6 6.Bb2+=) 6.Bb2+- Be6 (6...Be7 7.e3+-) 7.e3 g6 (7...c5 8.Be2+-) 8.a4 (8.Be2 Bg7+-) 8...ba4 9.Ra4 Qc8?? (better 9...Bg7+-) 10.Bf6+- Rg8 11.Ng5 Bg7 (11...c5 12.Nh7 Nd7 13.Nf8 Rf8 14.Bc3+-) 12.Nh7 Nd7 13.Bg7 Rg7 14.Ng5 Qb7 (14...Bd5 15.Qg4 Qb7 16.Nc3+-) 15.Ne6 fe6 16.Qg4 Qb5 (16...Ke7+-) 17.Bb5 (17.Bb5 Ke7 18.Qg5 Nf6 19.Nc3+-) 1–0. Rosner,Dirk – Eckstein,Ole, Tiger SC, 2001.

4.Bb2 Bb4 5.Nf3 Be7 6.e3 Nc6 7.Be2 d5 8.0-0 Bg4 9.c4 Bd6 10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 Qe7 13.Bg7 Rg8 14.Bc3 0-0-0 15.Kh1 h5 16.Ng1 Ne5 17.f4 Ng6 18.Bf3 f5 19.Qe2 c6 20.Rab1 Nh4 21.Bg4 hg4 22.Qf2 Rh8 23.g3 Nf3 24.Nf3 gf3 25.Qf3 Rh7 26.Rf2 b5 27.Bd4 c5 28.Bc3 b4 29.Ba1 Kd7 30.Qb7 Ke6 31.Qe7 Ke7 32.Kg2 Ke6 33.Rc1 Be7 34.Rc2 Rd5 35.Rc4 Rf7 36.Rc2 Rf8 37.Kf3 Rc8 38.h3 c4 39.g4 a5 40.gf5 Kf5 41.e4 Ke6 42.ed5 Kd5 43.d4 a4 44.Rfe2 b3 45.Re5 Kd6 46.ab3 ab3 47.Rce2 c3 48.Bc3 Rc3 49.R2e3 Re3 50.Re3 b2 51.Rb3 Kd5 52.Rb2 Kd4 53.Re2 Bc5 54.Re4 Kd5 55.h4 Normal 1-0. ZibbitVideos (2365) - yavan (2205), Rated Bullet game, lichess.org, 2015.

3.a3= Nc6 4.e3 (4.b5!? Na5 5.Be5+=) 4...d6 (4...a6 5.d4 ed4 6.ed4 Qe7 7.Be2+=) 5.c4 (5.Qf3 Bd7+=) 5...a5 (5...Nf6 6.b5 Ne7 7.d4 ed4 8.Qd4=) 6.Nc3 (6.Qf3 Bd7 7.b5 Nce7=) 6...ab4= 7.ab4 Ra1 8.Ba1 Nb4? (better is 8...Nf6=) 9.Qa4+- Bd7 10.Qb4 c5 (10...Nf6 11.Qb3+-) 11.Qb1 Nf6 12.Nd5 Be7 13.Nb6 Qb8 14.Bd3 e4 15.Nd7 Qb1 16.Bb1 Nd7 17.Be4 0-0 18.Nf3 Bf6 19.Bf6 Nf6 20.d3 Ne4 21.de4 Re8 22.Nd2 Ra8 23.0-0 Ra2 24.Nf3 Rc2 25.e5 de5 26.Ne5 f6 27.Nd3 Rc4 28.Rc1 Rc1 29.Nc1 Kf8 30.Nd3 c4 31.Nb4 c3 32.Kf1 Ke7 33.Ke1 Kd6 34.Nd3 Kd5 35.Kd1 Kc4 36.Kc2 g5 37.h3 h5 38.g4 hg4 39.hg4 Kd5 40.Kc3 Ke4 41.f4 Ke3 42.fg5 fg5 43.Kc4 Kf3 44.Ne5 Kf4 45.Kd4 Kg3 46.Ke4 Kh3 47.Kf5 Kh4 48.Kg6 Kg3 49.Kg5 Kh2 50.Kf4 (50…Kg2 51.g5+-) 1–0. Gouliaros Antoniadis,A – Skoulikas,M, GRE–ch U10 Greece, 2002.

3.a3= d6 4.e4 =.

3.c4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.c4 e5).

3.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e5).

3.Be5 Bb4?? (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 b6??).

3.Be5 f6 4.Bc3 Nc6 5.b5 Ne5 6.d4 Nc4 7.e3 Ne7?? 8.Bc4+- d5 9.Bb3 Qd6 10.a4 Qe6 11.Nf3 Ng6 12.0-0 Bd6 13.Nbd2 Qf5 14.e4! de4 15.Ne4! Qf4 16.Bd5 Rb8 17.Re1 Ne7 18.Bd2 Qg4 19.Qe2 Qg6 20.Nd6 (20...cd6 21.Qe7) 1–0. wlittle (2165) – davidjensen (1920), net–chess.com, 2004.

4.e3 f6 5.Bc3+/- Nc6 6.Nf3 (6.b5 Nb4+/-) 6...d5? (better 6...Bb4!? 7.d4 a5+=) 7.b5+/- Ne5 (better 7...Nce7!?+/-) 8.Ne5+- fe5 9.Be5 (9.Qh5 Kd7+-) 9...Nf6 10.Be2 (10.a3 Bd6 11.Bd6 Qd6+/-) 10...Be7 (10...Bd6 11.Bd6 Qd6 12.Bh5 g6 13.Bf3+-) 11.0-0 0-0 12.d3 (12.Nc3 a6+-) 12...c5 (12...a6 13.c4+-) 13.Bf3 (13.bc6 Bc6 14.d4 Nd7+-) 13...Rc8 (13...Qd7 14.Nc3+-) 14.c4+- Bd6 15.Bd6 Qd6 16.Nc3 Rc7 17.Qc2 (17.cd5 Nd5 18.Bd5 Bd5 19.Nd5 Qd5+-) 17...d4 (17...dc4 18.dc4 Bf3 19.gf3+/-) 18.Bb7 Rb7 19.ed4 Qd4 20.Ne4 (20.Rad1 Re7+/-) 20...Ng4 (20...Ne4 21.de4 Re7 22.Rae1+/-) 21.Rad1 (21.Rae1 Rbf7+/-) 21...Rbf7 (21...Qe5 22.Ng3+-) 22.Qe2 Ne5 23.Ng5 Re7 24.Qe4 The mate threat is Qxh7 24...Qe4 25.Ne4 (25.de4?! Nc4 26.Rfe1 h6=) 25...Nd3 26.Rd3 (26.f3 Rd8+/-) 26...Re4+= 27.Rc3 (27.Rd7 Rc4 28.Ra7 Re8+=) 27...Re2 (27...Rff4 28.Ra3=) 28.a3 g5 (28...Rf4 29.h3+=) 29.f3 Rd8 (29...Rd8 30.f4 gf4 31.Rf4 Rd1 32.Rf1 Rd6+/-). algernon (2535) - vpccosta (2330), net-chess.com, 2022.

4.e4 Nf6= 5.b5 Ne4 6.d3 Nf6 7.Nd2 Be7=+ (8.Ngf3 a6=+). balasko – Zagarwinn (1735), internet, 2007.

4.Bb2 Nb4 5.a3 Nc6 6.c4 Nf6 7.Nf3 Be7 8.Nc3 d6 9.e3 Be6 10.d4 Bg4 11.Bd3 0-0 12.h3 Bh5 13.Nd5 Na5 14.Nf4 Bf3 15.Qf3 c6 16.Bc3 Qc7 17.0-0 Nb7 18.d5 cd5?? 19.Bf6+- Bf6 20.Nd5 Qd8 21.Qf5 g6 22.Qf6 Qf6 23.Nf6 Kg7 24.Be4 Kf6 25.Bb7 Rad8 26.Rfd1 Kg5 27.Rd4 f5 28.Rad1 Rf6 29.g4 fg4 30.Rg4 Kh5 31.f4 Rf5 32.Kf2 Rd7 33.Bc8 Rdf7 34.Bf5 Rf5 35.Rd6 Ra5 36.Rd5 (36…Kh6 37.Ra5 ba5 38.c5+-) 1–0. pierre (2125) – Rudolf, internet, 2007.

4.Bc3 Nb4 5.Nf3 Nf6 6.e3 Bb7 7.Be2 Bd6 8.d4 0-0 9.0-0 Ne4 (9...Re8 10.Nbd2=) 10.Bb2 Qf6 11.c4 Rae8 12.a3 Nc6 13.Qc2 Qh6 14.d5 Na5 15.h3 Ng3 16.fg3 (16.Re1!? Ne2 17.Re2=) 16...Qe3-/+ 17.Rf2 (17.Kh2 Qe2 18.Qc3 f6-+) 17...Bg3 18.Bd4? (better 18.Bf1 Ba6 19.Bd4 Bf2 20.Qf2 Qf2 21.Kf2 Bc4 22.Bc4 Nc4 23.Ra2-/+) 18...Bf2-+ 19.Kf1 Qe2! 20.Qe2 Re2 21.Ke2 Bd4 22.Nd4 Nc4 23.Nc3 c5 24.Nf5 (24.Nc2 Re8 25.Kf2 a6-+) 24...Re8 25.Kd3 Ba6 26.Kc2 g6 27.Nh4 (27.Ng3 Ne3 28.Kd2 Ng2-+) 27...Ne3 28.Kd2 f6 29.Re1 (29.Re1 Nc4 30.Kd1 Re1 31.Ke1 Na3 32.Nf3-+). benachamohcine (2095) - Rrufejaaa (2285), Rated Blitz game, lichess.org, 2014.

4.Bb2 Bb7 5.e3 Nf6 6.Nf3 Be7 7.Bb5 Nbd7 (7...Nc6 8.Nd4 Qd7 9.Qf3+-) 8.Nd4 0-0 (8...Bg2? 9.Rg1 Bb7 10.Rg7+-) 9.Nc3 (9.0-0 d5+-) 9...c5 (9...a5 10.a3+-) 10.bc5 dc5 11.Nc6 Bc6 (11...Qe8!? 12.Qf3 Bd6 13.Ne7 Qe7 14.Qb7 a6 15.Bd7 Nd7+-) 12.Bc6+- Rc8 13.Bb5 Ne5 14.0-0 Qc7 (14...Qd6 15.f4 Ng6 16.Qe2+-) 15.f4 Neg4 (15...Nc6 16.Rf3+-) 16.Qe2 h5 (16...Nh6 17.e4 c4 18.Ba6+-) 17.Bc4 Qb7 (17...a6 18.a4+-) 18.Ba6 Qc7 (18...Qd7 19.h3 Nh6 20.Bc8 Rc8 21.e4+-) 19.h3 Nh6 20.Bc8 Qc8 21.e4 g6 (21...Qd7 22.Rae1+-) 22.e5 (22.f5 c4 23.Kh1 Re8+-) 22...Nh7 (22...Ne8 23.Nd5 Bh4 24.g3+-) 23.Rf3 Nf5 (23...Rd8 24.Ne4+-) 24.Nd5 Bh4 25.Qc4 (25.Ra3 Rd8 26.c4 b5+-) 25...Qc6 (25...Rd8 26.Rd3+-) 26.a4 Rd8 27.Rd3 a6 (27...Ng3 28.Re1 Nf8 29.Nf6 Bf6 A) 30.Rg3?! Bh4 31.e6 Ne6 (31...Bg3?? 32.ef7 Kh7 33.Qc3 Bf2 34.Kf2+-) 32.Rg6 fg6 33.Re6 Qd5 34.Rg6 Kf7 35.Rg7 Kf8+-; B) 30.ef6 Rd3 31.Qd3+- (31.cd3?! Ne6+-)) 28.Nb4! Qc7 (28...cb4 29.Qc6 Pinning (29.Qc6 Deflection)) 29.Na6 Qc8 (29...Qb7 30.e6 Nd6 31.ef7 Qf7 32.Qf7 Kf7 33.Rb1+-) 30.a5 ba5 31.Ra5 (31.Nc5 Nf8 32.Rd8 Bd8+-) 31...Rd3 (31...Nf8 32.Nc5 Ne6 33.Bc3+-) 32.cd3 Be7 (32...Bd8 33.Ra2+-) 33.Bc3 (33.Nc5!? Nf8+-) 33...Nf8 34.Nc5 Bc5 (34...Qc7 35.Rb5+-) 35.Rc5 Qb8 (35...Qb7 36.Rb5 Qd7 37.d4+-) 36.Rc8 Qb1 (36...Qb6 37.d4 Kg7 38.Kh2+-) 37.Kf2 (better 37.Kh2 Qe1 38.Qe4 Qe4 39.de4 Ne7+-) 37...Qb7 (37...Qb6 38.Ke2 Qb7 39.Qc5+-) 38.Bb4 Nh4 39.Kg3 (39.Bf8?? Qg2 40.Ke1 Nf3 41.Kd1 Qd2) 39...Qg2 40.Kh4 Qf2 (40...g5 41.fg5 Qf2 42.Kh5 Qf3 43.Qg4 Qd3 44.Bf8 Qg6 45.Kh4 Qa6 46.Be7 Qc8 47.Qc8 Kg7 48.Bf6 Kh7 49.d4 Kg6 50.Qc2) 41.Kg5 Qg3 (41...Qc5 42.Kh6 Qc8 43.Qc8 f6 44.Qf8) 42.Kh6 (42.Kh6 Qg5 43.fg5 Kh8 44.Rf8) 1–0. Pierre – Bel Mondo, internet, 2020.

4.Bb2 Nf6 5.e3 d5 6.a3 Bd6 7.c4+/- 0-0 8.d4 Ne4 9.cd5 Qf6 10.f3?? Ng5 11.h4+- Nf3?? 12.Qf3 Qg6 13.Kd2 Bf5 14.Nc3 Bc2 15.Rc1 Bb3 16.Bd3 Qg3 17.Rh3 Qf3 18.Nf3 1–0. Snide – hmo66, playchess.de, 2001.

3.b5 c4 4.Be5 Bc5?? (better is 4...d5!?+=) 5.e3 (5.Bg7 Bd4 6.Bd4 Nf6+-) 5...d6?? (better is 5...Nf6 6.Bf6 Qf6+-) 6.Bg7 Nf6 7.Bh8 Be6 8.Qf3 Qd7 (8...Nbd7+-) 9.Bf6 (9...Qb5 10.Nc3+-) 1–0. slavisa10 – 08phypeach, Live Game Caissa's Web, 2004.

3.b5 Qc7 4.c4 Nf6 5.Nc3 d6 6.e3 Be7 7.d4 (7.Nf3 0-0=) 7...cd4 8.ed4 ed4 (8...0-0 9.Nf3=+) 9.Qd4= Nbd7 (9...Be6 10.Nf3=) 10.Nd5+= Nd5 11.Qg7 (worse 11.cd5 Bf6 12.Qe3 Kd8=+; worse 11.Qd5 0-0=+) 11...Qa5 12.Kd1 Qa4 13.Kc1?? (13.Kd2 Qb4 14.Kd1 Bf6 15.Bf6 N7f6 16.Qh8 Ke7–+) 13...Nb4?? (better 13...Bf6 14.Bf6 N7f6–+) 14.Qh8= Nf8 15.Qc3?? (15.Kd2 Bg5 16.f4 Bf4 17.Ke2 Bg4 18.Kf2 Qc2 19.Be2 Nd3 20.Kf1 Nb2 21.Qd4 Be2 22.Ne2–+) 15...Na2 (better 15...Bg5 16.f4 Bf4 17.Kb1 Bf5 18.Bd3 Nd3 19.Ba3 Qd1 20.Bc1 Bc1 21.Qc2 Nf4 22.Qf5 Ba3) 16.Ra2=. Wolfertz A1, 1988.

3.b5 d6 (---> 1.b4 e5 2.Bb2 d6 3.b5 c5).

3.b5 f6 (--> 1.b4 e5 2.Bb2 f6 3.b5 c5).

3.e3 cb4 4.Be5 Nc6=.

3.e3 d5 4.bc5 Nc6 (--> 1.b4 d5 2.Bb2 c5 3.bc5 Nc6 4.e3 e5).

3.Be5 cb4 4.Nf3 Bc5?? (better is 4...Nc6=) 5.Bg7+- d5 6.Bh8 f6 7.e3 Bg4 8.Be2 Nd7 9.Nd4 Bd6 (9...Bd4 10.ed4 Be2 11.Qe2 Qe7+-) 10.Bg4 Ne5 (10...Nf8 11.Bh5 Ng6 12.Qg4+-) 11.Bh5 Nf7 12.Ne6 (better is 12.Bf7 Ke7 13.Bd5 Be5 14.Nf5 Kd7+-) 12...Qe7 13.Bf7 Kf7 14.Nd4 Be5 (14...Nh6 15.Qh5 Kg8 16.Qh6 Kh8 17.Nf5+-) 15.Qh5 Kf8 16.Qg4 (16.Bg7 Kg7 17.Nf5 Kh8 18.Ne7 Ba1 19.Nd5 a5+-) 16...Nh6 (16...Bd4 17.Qd4 Qe4 18.Bf6 Qg2+-) 17.Qe6 (better is 17.Bg7! Kf7 18.Bh6 Bd4 19.Qh5 Ke6 20.ed4 Kd6 21.Kd1+-) 17...Qe6 18.Ne6 Kf7 19.Nd4 Rh8 20.f4 Bd6 (20...Bd4 21.ed4 Nf5 22.c3+-) 21.a3 Rg8 (21...ba3 22.Na3 a6 23.Nb1+-) 22.g3 (22.ab4 a6 23.Nc3 Rg2 24.Nd5 Ng4+-) 22...Ng4 (22...ba3 23.Na3 a6 24.c3+-) 23.ab4 h5 (23...a6 24.b5 ab5 25.Nc3+-) 24.Ra7 h4 (24...Kg6 25.Rb7 Ra8 26.Nf3+-) 25.Rb7 Kf8 26.gh4 Rg7 27.Ne6 Kg8 28.Ng7 Kf8 29.Rg1 Nh6 30.Ne6 Ke8 31.Rgg7 Nf7 32.Rgf7 f5 33.Rf5 Bb4 34.Rd5 Bd2 35.Kd2 (35.Ke2 Ba5 36.Ng7 Kf8 37.Ra5 Kg8 38.Nh5 Kf8 39.Ra8#) 1–0. chevin – theartoffarting, Live Game Caissa's Web, 2004.

3.bc5 (--> 1.b4 c5 2.bc5 e5 3.Bb2).

3.bc5 Nc6 4.e3 Bc5 5.Nf3 (--> 1.b4 c5 2.bc5 e5 3.Bb2 Nc6 4.Nf3 Bc5 5.e3).

4.bc5 Bc5 5.Nc3 Nc6 6.Nf3 Nf6 7.Nb5+= Qb8 8.Ne5 Ne5 9.d4 Bb4 10.c3 Be7 11.de5 Qe5 12.Qd4 Qd4 13.cd4 0-0 14.Rc1 Bb4 15.Bc3+/- Bc3 16.Rc3 d5 17.Nc7 Rb8 18.Bd3 Be6 19.f3 Rbc8 20.0-0 Bd7 21.Rfc1 Bc6 22.Nb5 Bb5+= 23.Bb5 Rc3 24.Rc3 a6 25.Bd3 Re8 26.Kf2 Kf8 27.g4+/- g5 28.Bf5 h5 29.gh5 Nh5 30.Bc8 Re7 31.Rb3 b5 32.Rc3 a5 33.Rc5 Nf6 34.Rb5 a4 35.Bb7+- Rd7 36.Bc6 (36...Rd8 37.a3+-) 1–0. Grott – Bendig,Frank, corr Gambitturnier S, 1993.

4.bc5 Bc5 5.d4 ed4 6.ed4 Qb6 7.Bc3 Be7 8.Qg4 Bf6 9.Nd2 Ne7 10.Rb1 Qc6 11.Ne4 d5 12.Nf6 Qf6 13.Bb5 Nbc6 14.Qf3 Bf5 15.Ba4 0-0 16.Ne2+= Rab8 17.0-0 Qg5 18.Ng3 Rfe8 19.Rfe1 Bd7 20.Bb3 b5 21.h3 b4 22.Bb2 Be6 23.c3 Qh4 24.Bc2 Ng6 25.cb4 Nd4 26.Qc3 Rbc8 27.Qd4 Qd4 28.Bd4 Rc2 29.Nh5 Ra2 30.Ng7 Rc8 31.Ne6 fe6 32.Ra1 Ra1 33.Ra1 Rc4 34.Bc5 Nf4 35.Ra7 Nd3 36.Re7 e5 37.Bd6 e4 38.b5 Rc1 39.Kh2 Rb1 ½–½. Knorr – Bendig,Frank, corr, 1991.

4.Bb2 Nb4 5.a3 Nc6 6.c4 Nf6 7.e3 d6 8.Nf3 Be6 9.d4 d5 = 10.cd5 (10.Qc2!?) (10.Nbd2?! Qa5) 10...Bd5 11.Nc3 Be7 12.Nd5 Qd5 13.Qc2 cd4 14.Nd4 (14.Bc4 Qa5) 14...Nd4 15.Bd4 Qa5 =+. Wolfertz.

4.Bb2 Nb4 5.a3 Nc6 6.e3 d5! 7.d4 c4. Wolfertz.

4.Bb2 Nb4 5.e4 d5 6.Bb5 Bd7 7.Bd7 Qd7 8.a3 Nc6 9.ed5 Qd5 10.Qe2 Qe6 11.Qe6 fe6 12.Nf3 Nf6 13.0-0 0-0-0 14.Re1 Re8 15.Nc3 e5 16.Ne4 Nd4 17.Nd4 ed4 18.Nf6 Re1 19.Re1 gf6 20.c3 dc3 21.Bc3 Bg7 22.Re7 Rg8 23.Rf7 c4 24.a4 h5 25.g3 h4 26.Kf1 hg3 27.hg3 a6 28.Bf6 Bf6+= 29.Rf6 Rg5 30.Rf4 b5 31.ab5 ab5 32.Ke2 Re5 33.Kf3 Kd7 34.g4 Kd6 35.Re4 Kd5 36.Re5+/- Ke5 37.Ke3 b4 38.d4 Kd5 39.g5 b3 40.g6 Ke6 41.d5 Kf6 42.d6 b2 43.d7 Ke7 44.g7 b1Q 45.d8Q! Kd8 46.g8Q Ke7 47.Qc4 Qb6 48.Qd4 Qb3 ½–½. Fricke – Bendig,Frank, corr SP16,1992.

4.Bb2 Nb4 5.e4 Qe7 6.f3 =.

3.a3 f6 4.e4 (---> 1.b4 e5 2.Bb2 f6 3.e4 c6 4.a3).

3.c4 d5 4.Be5 Be7?? (4...dc4 5.Nf3 Nf6= (5...Bb4?? 6.Bg7 Nf6 7.Bh8+-)) 5.Bg7+- Be6 (5...Bf6 6.Bh8 Bh8+-) 6.Bh8 Bf8 (6...dc4 7.Bc3+-) 7.cd5 Bd7 (7...Bd5 8.a3+-) 8.Nc3 Ne7 9.Bf6 Bh6 (9...Qb6 10.e4+-) 10.d6 Bf5 (10...Bf8 11.Qc2 h5 12.Qh7+-) 11.Be7 Bd2 12.Qd2 Qd6 13.Bd6 Kd7 14.Qg5 Na6 (14...Be6 15.Qe7 Kc8 16.Qc7) 15.Qe7 Kc8 16.Qe8 1–0. Janek – Andrew, internet, 2016.

3.e4 (--> 1.b4 c6 2.e4 e5 3.Bb2).

3.Be5 a6 4.a3 d6 5.Bb2 (5.Bg3 Nf6+-) 5...Nf6 6.Nf3 a5 7.e4 Bg4 (7...ab4 8.Bd3+-) 8.h3 Bh5 9.Nc3 Be7 10.Be2 0-0 11.0-0 Nbd7 12.b5 Bf3 (12...Bg6 13.d3+-) 13.Bf3+- (13.gf3?! Nh5=) 13...Ne5 14.Be2 cb5 15.Bb5 d5 (15...Rc8+-) 16.Nd5 Ne4 17.c4 (17.Be5? Qd5 18.Bh2 Qb5–+) 17...Nd3 (17...Ng6+-) 18.Qe2 Ndc5 (18...Nb2 19.Qe4 Bd6 20.Rfb1 Nc4 21.Bc4+-) 19.d3 Nf6 (19...f5 20.de4 Ne4 21.Rad1+-) 20.Ne7 Kh8 21.Qe3 Nfd7 (21...Ne6 22.Nf5+-) 22.Nf5 f6 (22...Ne6 23.Rfe1 Nf6 24.Rab1+-) 23.Rae1 Qc7 (23...g6 24.Nd6 Qb6 25.Qe7+-) 24.Qe7 Rg8 25.Bc3 Rae8 (25...Nd3 26.Rd1 Qd8 27.Bd7 Qe7 28.Ne7 Nf4+-) 26.Qe8 Nf8 27.Nh6! gh6 (27...gh6 28.Bf6 Mate attack) 28.Bf6 Rg7 (28...Qg7 29.Bg7 Rg7 30.Qf8 Rg8 31.Qf6 Rg7 32.Re8) 29.Qf8 1–0. Ddgs – Groda, internet, 2019.

3.Be5+= d5 A) 4.Nf3 Nf6 (4...Nd7 5.Bc3 Ngf6 6.e3 Bd6 7.Be2 0-0+=) 5.b5 Nbd7 6.Bf4 cb5 7.e3 a6=; B) 4.a3 Nd7 5.Bd4 a5 6.ba5 Ngf6 7.e3 Bd6+=; C) 4.e3 Nf6 (4...Nd7 5.Bc3 Ngf6 6.Nf3 Bd6 7.Be2 0-0+=) 5.a3 Nbd7 6.Bf4 Be7 7.Nc3 0-0+=.

3.Be5+= d6 4.Bd4 (4.Bc3 Nf6 (4...Ne7 5.Nf3 Nd5 6.e3 Nc3 7.Nc3 d5+=) 5.Nf3 Nd5 6.e3 Nc3 7.Nc3 d5+=; 4.Bb2 Nf6 (4...d5 5.Nf3 Nf6 6.a3 Bd6 7.e3 Bg4+=) 5.Nf3 d5 6.b5 Bd6 7.e3 0-0+=) 4...b6 (4...Nf6 5.Nf3 Be7 6.e4 0-0 7.Nc3 Re8+=; 4...d5 5.Nf3 Nf6 6.a3 a5 7.b5 Bd6+=) 5.Nf3 c5 (5...Nf6 6.Nc3 Be7 7.e3 0-0+/-) 6.bc5 dc5 7.Bb2 (7.Be5 Be6+/-) 7...Nf6 8.e4 Bg4 9.Bb5 Nbd7 10.e5 Nd5 11.0-0 Bf3 (11...Be6!?+/-) 12.Qf3+- (12.gf3?! Qh4+=) 12...a6?? (better is 12...Nc7 13.Bc4 Ne6+-) 13.Bc4 Ne5 (13...Ra7+-) 14.Be5 Nb4 (14...Qe7 15.Qd5 Ra7 16.Qc6 Qd7 17.Qb6 Qb7 18.Qb7 Rb7 19.Ba6 Ra7 20.Bb5 Kd8+-) 15.Qf7 1–0. michaelbuss – kong, ChessWorld.net, 2005.

3.Be5 f6 4.Bc3 d5 5.e3 Na6 6.Ba6 ba6 7.d3 Bf5 8.Nf3 Bd6 9.Nd4 Bd7 10.Nd2 Qe7 11.a3 a5 12.N2b3 (12.ba5!? c5 13.Qh5 Qf7 14.Nf5 Bf5 15.Qf5+/-) 12...ab4+= 13.ab4 Bb4 14.Bb4 Qd8?? (better is 14...Qb4 15.Qd2 c5 16.Qb4 cb4+/-) 15.0-0 Nh6 16.Qh5 Nf7 17.Nc5 0-0 (17...Qc8+-) 18.Nde6 Be6 19.Ne6 (19.Ne6 Qc8 20.Nf8+-) 1–0. pcmvr – jelquez (2305), net–chess.com, 2016.

3.Be5 Qg5? 4.Nf3+- Qh6 5.a3 (5.Nc3 Nf6+-) 5...f6 (5...d6 6.Bd4+-) 6.Bb2 (6.Bg3 a5 7.Nc3 d5+-) 6...Ne7 (6...d5 7.c4 dc4 8.e4+-) 7.c4 1–0. szn (1665) – VinnyStar14, internet, 2009.

4.Be5 Qb6?? 5.Bg7+- Bc5 (5...Nf6 6.Bf6 Rg8 7.Qc2+-) 6.e3 f6 (6...d6 7.Nc3+-) 7.Nc3 (7.Bh8 Kd8+-) 7...Na6 (7...Bb4 8.Bh8 Bc3 9.dc3+-) 8.Bh8 Bb4 (8...Qc7 9.Qh5 Kf8 10.Qh7+-) 9.Qh5 Kd8 10.Qh7 Bc3 (10...Ne7 11.Bf6 Nc7 12.Rb1+-) 11.Qg8 Kc7 12.dc3 Qb2 13.Rd1 Qc3 14.Ke2 (14.Rd2 b6+-) 14...Qc2 (14...b6 15.Qf7+-) 15.Rd2 Qa4 16.Qg3 Kb6 17.Bf6 Nb4 18.Bd8 Ka6 19.c5 Na2 20.Kf3 b5 21.cb6 Kb7 (21...Qc4 22.Bc4 Ka5 23.Qd6 Nb4 24.Ra2 Na2 25.Qa3) 22.Qc7 1–0. Pierre – VerianM, internet, 2020.

4.Be5 Nf6!?=+.

4.Be5 Bf8 5.Nf3 d6 6.Bd4 Bg4 (6...c5 7.Be3+=) 7.Qb3 b6 8.h3 Bh5 (8...Be6!?+-) 9.Nc3 Nf6 10.g4 Bg6 11.Nh4 (11.Qa4 Be7 12.h4 h6+-) 11...d5 (11...Nbd7!?+-) 12.e3 Ne4 (12...Be4 13.Rg1 Na6 14.d3 dc4 15.Qc4+-) 13.Ng6 hg6 14.Bg2 c5? (better 14...Nc5 15.Bc5 dc4 16.Bb6 cb3 17.Bd8 Kd8 18.ab3 a5+-) 15.Ne4 (15.Nd5 cd4 16.Be4 Nd7+-) 15...de4 16.Be4 Nd7 17.Bc3 (17.Ba8?! Qa8 18.0-0-0 cd4 19.ed4 Bd6=) 17...Rc8 18.Qa4 Qe7 (18...Qc7 19.Rd1+-) 19.Bb7 Rc7 20.Qa7 f5 (20...Qd8 21.Qa6+-) 21.Rb1 fg4 22.Qa8 Qd8 23.hg4 Rh1 24.Bh1 Bd6 (24...Qa8 25.Ba8 g5+-) 25.Qd5 Nf6 (25...Qe7 26.Bg7! Kd8 27.Bh6+-) 26.Qd3 Ke7 (26...Kf8 27.g5 Ne8 28.Qg6+-) 27.Qg6 Qf8 28.Rb6 Rd7 (28...Qf7 29.Qf7 Kf7 30.Rd6 Ng4 31.Bd5 Ke8 32.Re6 Kf8 33.a4+-) 29.g5 Ng4 30.Qe4 (30.Qe4 Kd8 31.Qg4+-) 1–0. Jan Ek – Saxxa, freechess.org, 2019.

4.a3 d5 5.e3 Bd6 6.d4 (6.Nf3 Be5 7.Ne5 0-0+=) 6...Qe7 (6...Be5 7.de5 Ne4 8.Nd2+=) 7.Nf3 (7.Bd6 Qd6 8.Bd3 0-0+/-) 7...Nbd7 (7...Be5 8.Ne5 Nbd7 9.Nd7 Bd7 10.Bd3+/-) 8.Bd6 Qd6 9.Nc3 (9.Nbd2 b5+/-) 9...0-0 10.Bd3 h6 (10...Re8 11.0-0+/-) 11.0-0 Re8 12.Re1 (12.Ne2 b5+/-) 12...Ne4 13.Be4 (13.Ne2 b5+/-) 13...de4 14.Nd2 f5 (14...Nf6 15.Ne2+/-) 15.f3 (15.Ne2 Nf6+/-) 15...Nf6 16.f4 (16.fe4 fe4 17.Nc4 Qc7+/-) 16...Be6 (16...b5 17.Nb3+/-) 17.Nf1 (17.Na4 b6+=) 17...Nd5 (17...a5 18.Qd2+=) 18.Na4 b6 (18...Nf6 19.Nd2+=) 19.c4+/- Nf6 20.c5 Qc7 21.cb6 (21.Qe2 Rad8+=) 21...ab6 22.Ng3 (22.Qc2 Red8+=) 22...g6 (22...Nd5 23.Qc2+=) 23.Qc2 Rec8 (23...Ra7 24.Rec1+=) 24.Nc3 b5 (24...Nd5 25.Qd2+=) 25.a4+/- Bc4 (25...Qd6 26.ab5 Ra1 27.Ra1 cb5 28.Qb2+=) 26.ab5 (26.a5 Qd6 27.Qb2 Nd5 28.Nd5 cd5+/-) 26...Ra1 27.Ra1 cb5 28.Rd1 (28.Ra6 Kg7 29.Qb2 Nd5+=) 28...Bd5 (better is 28...Bf7!? 29.Rc1 Nd5–/+) 29.Nge2 (29.Rc1 Be6 30.Qd2 Qd7+=) 29...Bc4 (29...Qd6 30.Qb2 Bc4 31.Rc1 Be2 32.Ne2 Rc1 33.Nc1=) 30.Qd2 Qd6 (30...Be2 31.Ne2 Qc2 32.d5 Qd2 33.Rd2=) ½–½. Meisinger,Peter (1710) – Brunner,Hermann, DESC, 2000.

4.a3 d5 5.e3 Nbd7 6.Bf4 Be7 7.Be2 0-0 +=.

4.a3 d5 5.e3 Be7 6.Nf3 0-0 7.c4 Bg4 8.cd5 Qd5 9.Be2?? (better is 9.Nc3 Qe6 10.d4+=) 9...Bf3–+ 10.Bf3 Qe5 11.Nc3 Nbd7 12.0-0 Bd6 13.g3 Rac8 14.d4 Qe6 15.Na4 b6 16.Rc1 Ne4 (16...c5 17.dc5 bc5 18.bc5 Nc5 19.Nc5 Bc5 20.Qa4–+) 17.Qd3 (17.Rc6 Ndf6 18.d5 Qe7–/+) 17...f5 18.Nb2 Ndf6 19.Nc4 Bc7 20.Qe2 Rcd8 21.h3 (21.Qc2 c5 22.Nd2 Bd6 23.bc5 bc5–+) 21...Qd5 (21...Bg3!? 22.fg3 Ng3 23.Qd3 Nf1 24.Rf1–+) 22.Nd2 Rfe8 23.Ne4 fe4 (23...Re4?! 24.b5+=) 24.Bg2 Rf8 (24...Bd6 25.Qa6–+) 25.Qc4 Qc4 (better is 25...Bd6!?–+) 26.Rc4+= Kf7 27.Rc6 Bd6 28.Rfc1 b5 29.Ra6 Rd7 30.Bf1 Rb8 31.Rcc6 Be7 32.Bg2 Bf8 33.Kf1 Be7 34.Ke2 Bf8 35.Re6 Exerts pressure on the isolated pawn 35...Be7 36.Rac6 a5 37.ba5+= Ba3 38.Rb6 Ra8 39.a6 Nd5 40.Rbc6 Nc7 41.Re4 Ra6 42.Rf4 Ke7 43.Ra6 Na6 44.Bc6 Rc7 45.Bb5 Nb4 46.Rg4 Ke6 47.Rg5 Nd5 48.Bd3 Nc3 49.Kf3 g6 50.Re5 Kd6 51.Ra5 Bb4 52.Ra6 Kd5 53.Rb6 Rf7 54.Kg2 Ba5 55.Ra6 Bd8 56.Ra8 Rd7 57.Rc8 Bc7 58.Kf1 Ne4 59.Be4 Ke4 60.Ke2 Re7 61.f3 Kd5 62.g4 g5 63.Kd3 Rd7 64.Rg8 Bd8 65.e4 Ke6 66.Re8 Kf7 67.Re5 Bf6 68.Rf5+/- White prepares the advance e5 68...Kg6 69.e5 Bg7 70.Ke4 Rc7 71.e6 Rc6 72.d5 Rc4 73.Kd3 Rd4 74.Ke2 Bf6+/- 75.Ke3 Rd1 76.Ke2 Rd4= 77.Ke3 Rd1 78.f4 Rh1 79.d6 Re1= 80.Kf3 Re6 81.Rd5 gf4 82.Kf4 Bd8 83.d7 Kf7 84.g5 Ke7 85.h4= Rd6 86.Rd6 Kd6 87.Kf5 Kd7 88.g6 ½–½. Hal1958 – Yannick, playchess.de, 2005.

4.a3 d6 5.Bb2 g6 (5...d5 6.Nf3+=) 6.d3 (6.Nf3 Bg7+/-) 6...Bg7+= 7.e4 0-0 8.f4 (8.Nf3 a5+=) 8...Nh5 (8...a5 9.Nf3+=) 9.Bg7 Kg7 10.Qd2 (10.g3 a5+=) 10...Bg4 (10...Qf6!? 11.Qc3 Nf4 12.Qf6 Kf6=) 11.Be2 Qh4 12.Kd1 Ng3? (12...f5 13.e5 de5 14.fe5 Re8=) 13.Bg4?? (13.Qe1 Qf6 14.e5 (14.Qg3 Qa1 15.Kc1 Be6–/+) 14...Qf4 15.hg3 (15.Qg3?! Qf1 16.Qe1 Qg2+/-) 15...Qe5 16.Nc3+- (16.Bg4?! Qa1 17.Kc1 a5=)) 13...Qg4–+ (13...Nh1?! 14.Bh3 Nf2 15.Kc1 Nh3 16.Nh3–/+) 14.Nf3 (14.Ke1 Nh1 15.g3 d5–+) 14...Nh1 15.Nc3 (15.Qe2 f5 16.ef5 Rf5–+) 15...Nd7 (better is 15...f5!? 16.Qe2 fe4 17.de4–+) 16.Kc1 f5 (16...a5!? 17.b5 cb5 18.Kb2–+) 17.Kb2 fe4 18.Rh1?? (better is 18.Ne4 d5 19.Neg5–+) 18...ef3 19.g3 (19.gf3 Qf4 20.Qf4 Rf4–+) 19...Rae8 (19...a5 20.ba5 Ra5 21.Qe3–+) 20.Ne4 (20.Qf2 a5!–+) 20...d5 21.Qc3 (21.Nd6 Re2 22.Qc3 Nf6 23.Nb7 f2–+) 21...Kg8 22.h3 (22.Nd6 Rb8 23.Nb7 Rb7 24.Qc6 Rfb8 25.Qd5 Kg7–+) 22...Qe6 (22...de4?! 23.hg4 e3 24.Qc4 Rf7 25.Rh7=) 23.Ng5 (23.Nf2 Nb6 24.Qd4 Qf6 25.Qf6 Rf6–+) 23...Qf6 (23...Qe2!? 24.Qd4 f2 25.Qa7–+) 24.d4 (24.Nf3 Re3 25.Rf1–+) 24...Nb6 25.Nf3 (25.Kc1 Nc4 26.Qd3 f2–+) 25...Re4 26.Ka2 Nc4 27.Ne5 Ne5 28.de5 Qe6 29.Qd3 Rc8 30.Kb2 c5 31.Rd1 cb4 32.Qd5 ba3 33.Ka3 Qd5 34.Rd5 Re3 35.Kb2 Rc7 36.e6 Re6 0–1. skaranz – ANJI, internet, 2010.

4.a3 d6 5.Bd4 Be7 6.e3 0-0 7.Nf3 c5 +=.

4.c3 d5 (4...d6 5.Bf6 Qf6 6.e4 Qe7 7.Qe2 a5+=) 5.e3 Nbd7 6.Bf4 Be7 7.d4 Nb6 +=.

3.a3 a5 4.b5 Nf6 5.d3 c6 6.c4 cb5 7.cb5 Qb6 8.Nc3 Bc5 (8...Be7!?=) 9.e3+= Ng4?? (better is 9...d6+=) 10.Qg4+- 0-0 11.Nf3 (11.d4 ed4 12.Na4 Qh6 13.Nc5 d6 14.Qd4 dc5 15.Qc5 Re8+-) 11...d6 (11...d5 12.Qa4+-) 12.Qh4 h6 (12...Qd8 13.Qd8 Rd8 14.Nd5+-) 13.Be2 (13.d4 ed4 14.ed4 Ba3 15.Ra3 Re8 16.Kd1 Be6+-) 13...Be6 (13...Qd8 14.Qd8 Rd8 15.Nd5+-) 14.0-0 (14.d4 ed4 15.ed4 Qd8 16.dc5 Qh4 17.Nh4 dc5+-) 14...Nd7 (14...Qd8 15.Qd8 Rd8 16.d4 ed4 17.ed4+-) 15.d4 ed4 16.ed4 a4 (16...Qd8 17.Qd8 Rad8 18.dc5 Nc5 19.Rfe1+-) 17.dc5 Nc5 18.Ne4 (better is 18.Rad1 Rfd8 19.Qg3+-) 18...Nb3 (18...Ne4 19.Qe4 Rfe8 20.Bd3+-) 19.Rad1 (19.Nf6 Kh8 20.Qe4 Bf5 21.Qf5 Qf2 22.Rf2 g6 23.Nh5 f6 24.Bf6 Kh7 25.Qd7 Kg8 26.Qg7) 19...d5 (19...Rfd8 20.Qg3 g6 21.Qh4+-) 20.Nc3 (better is 20.Qg3 f6 21.Nf6 Rf6 22.Bf6 Bg4+-) 20...d4 (20...Rfd8 21.Na4 Qd6 22.Nc3+-) 21.Nd4 Nd4 22.Rd4 Bb3 (22...Rfd8 23.Rfd1 Rd4 24.Rd4 Re8+-) 23.Rg4 Be6 24.Rg3 (24.Rg7! Kg7 25.Nd5 f6 26.Bf6 Rf6 27.Qf6 Kh7 28.Bd3 Bf5 29.Bf5 Kg8 30.Ne7) 24...Qd6 (24...f6 25.Qh6 Qc7+-) 25.Ne4 (25.Rg7 Kg7 26.Ne4 f6 27.Bf6 Kg8 28.Nd6 Rf6 29.Qf6 Kh7 30.Bd3 Kg8 31.Qe6 Kg7 32.Qf7 Kh8 33.Qh7) 25...Qd2 26.Rg7 1–0. willow27 – gummi57, ChessWorld.net, 2005.

3.a3 b5 4.Nf3+= Bb7 (4...Qe7 5.e4+=) 5.e3 c5 (5...a5!?+/-) 6.bc5+- (6.Be5?! Bf3 7.Qf3 Be5+=; 6.Bb5?! cb4 7.ab4 Nc6 8.Bc6 Bc6 9.Ne5 Be5 10.Be5 Qg5+-) 6...Bc5 7.Ne5 d6? (better is 7...Nh6+-) 8.Qg4 (8.Bb5?! Kf8 9.Nd3 a6+-) 8...g6 (8...Nf6 9.Qg7 Rf8 10.Bb5 Nbd7 11.Nd7 Nd7 12.Qh7+-) 9.Bb5 Bc6 (9...Kf8 10.Ng6! hg6 11.Bh8 Nh6+-) 10.Nc6 Nc6 11.Bc6 Kf8 12.Ba8 Qa8 13.Bh8 Nf6 14.Bf6 Qd5 15.Qc8 1–0. market (1935) – MrOwA, GameColony.com, 2002.

3.a3 Qe7 4.e4 (4.c4 b6=) 4...Nf6 5.Qf3 (5.Qe2 a5 6.f4 ab4+= (worse is 6...ef4 7.e5+-)) 5...Nc6 (5...a5 6.b5=) 6.Bc4 (6.Ne2 0-0=) 6...0-0 (6...Nd4 7.Qd3=) 7.d3 (7.Ne2 a5=) 7...a6 (7...b5 8.Ba2+=) 8.Ne2 b5 9.Bb3 Bb7 (9...a5 10.c3=) 10.c4 Qd8 (10...Qd8 11.0-0 bc4 12.Bc4 Be7+=; 10...Nd4 11.Nd4 ed4 12.0-0=). willow27 – Nexxus6, ChessWorld.net, 2007.

3.a3 Qf6 (--> 2.Bb2 Qf6 3.a3 Bd6).

3.a3 Nf6 (--> 2.Bb2 Nf6 3.a3 Bd6).

3.a3 Kf8 4.e3 a6 5.Bc4 Qg5 (5...Nc6 6.Nf3+=) 6.Qf3 (6.Nf3 Qe7+/- (6...Qg2? 7.Rg1 Qh3 8.Ne5 Be5 9.Be5+-)) 6...Nf6 7.Nh3 (7.d3 Nc6+/-) 7...Qg4 (7...Qg6 8.d3+=) 8.d4 (better is 8.Qg4 Ng4 9.Ng5+/-) 8...e4? (better is 8...Qf3 9.gf3 ed4+/-) 9.Qg4+- Ng4 10.Nd2 (better is 10.Ng5!? Ke7 11.h3+-) 10...f5+/- 11.0-0-0 (11.Ng5!? Nh6 12.0-0+/-) 11...Bh2 (better is 11...b5!? 12.Be2 a5=) 12.g3+/- a5 (better is 12...Bg3 13.fg3 Ne3+/-) 13.f3?? (better is 13.Nf1 ab4 14.ab4 (14.Nh2?! ba3 15.Ba1 Nf6=) 14...Bg3 15.Ng3+-) 13...ef3–/+ 14.Nf3 (14.Nf4!? ab4 15.ab4–/+) 14...Bg3–+ 15.Nfg5?? (better is 15.Kd2–+) 15...Ne3 16.Rd3 Nc4 (16...f4 17.Re3 fe3 18.Rf1 Ke8 19.Rf3–+) 17.Rg3 Nc6 (17...ab4 18.Nf4 Kg8 19.Re1–+) 18.Rf1? (18.Nf4 ab4 19.Nh7 Rh7 20.Rh7 ba3 21.Ba1+=) 18...Nd4 (better is 18...Ne7–+) 19.Bd4+/- Na3?? (better is 19...d6 20.Nf4 ab4 21.Nge6 Be6 22.Ne6 Ke7 23.Nc7 Rag8 24.ab4 Kd7+-) 20.Rf5 Ke8 (20...Ke7 21.Re3 Kd6 22.Nf7 Kc6 23.Rc3 Nc4 24.Rc4) 21.Re3 Kd8 22.Nf7 1–0. lapinagile – shlong, net–chess.com, 2008.

3.b5 c5 4.Nf3+= Nf6 (4...Qe7 5.Nc3+=) 5.Ne5 Qb6? (better is 5...0-0+=) 6.Nc4+- Qb5?? (better is 6...Qc7 7.Bf6 gf6+-) 7.Nd6 (7...Ke7 8.Nb5+-) 1–0. Wall,Bill – Buck, internet, 2003.

3.c3 Nf6+= 4.d3 0-0 5.e4 (5.Nd2 Be7+=) 5...c6 (5...a5!? 6.b5 c6–/+) 6.Be2 (6.Nd2 c5 7.b5 Bc7=) 6...Bc7 (6...a5 7.ba5 Qa5 8.Nd2+=) 7.Nf3 Qe7 8.Ne5?? (better is 8.Nbd2=) 8...Be5 9.f4 (9.0-0–+) 9...Bf4 10.Nd2 (10.0-0 Be3 11.Kh1 d5–+) 10...d5 11.ed5 (11.0-0 Be3 12.Kh1–+) 11...Nd5 12.0-0 (12.g3 Bh6–+) 12...Qe3 13.Kh1 (13.Rf2 Qd2 14.Bc1 Qd1 15.Bd1 Be5–+) 13...Qd2 14.Bf3 (14.Bc1 Qd1 15.Bd1 Bd6–+) 14...Qd1 (14...Qb2 15.Bd5 cd5 16.Rf4 Qc3 17.Rc1–+) 15.Rad1 (15.Rfd1 Be6 16.Re1–+) 15...Bf5 (better is 15...Ne3–+) 16.Bd5 cd5 17.Rf4 Bg6 (17...Be6 18.h4–+) 18.c4 (18.Rd4 Na6–+) 18...Rd8 19.Rd4 (19.c5–+) 19...Nc6 20.Rd5 Rd5 21.cd5 Nb4 22.d6 Rd8 23.Ba3 Nd5 24.d4 Kf8 25.Rc1 Ke8 26.Rc5 Be4 27.h3 Rd6 28.Kh2 Rd8 29.Rb5 Rd7 30.Bc5 b6 31.Ba3 f6 32.Kg3 Nc3 33.Rb2 Rd4 34.Kh2 Kd7 35.Kg3 b5 36.Rf2 b4 37.Bb2 a5 38.Kh2 Ke6 39.Kg3 g5 40.Kh2 h5 41.Kg3 f5 42.Kh2 h4 43.Kg1 –+. jbumgar (1675) – gregorgysi (2250), net–chess.com, 1999.

3.Nc3 Bb4+= 4.Nd5 Bd6 5.Nf3 c6 (5...Nf6!? 6.e4 0-0+=) 6.Ne3+= Qe7? (better is 6...Nf6!? 7.Ne5 Be5 8.Be5 d5=) 7.Nf5+- Qf6 8.Nd6 Qd6 9.Be5 Qg6 (9...Qf8 10.e4+-) 10.e3 (10.Nh4 Qg5 11.Nf5 Qf5 12.Bg7 h5 13.Bh8 f6+/-) 10...Nf6 11.Bd3 Qg2 (11...Ne4 12.0-0 d5+/-) 12.Rg1 Qh3 13.Rg7 Nh5 (13...Qh6 14.Rg5 d5+-) 14.Rg5 (14.Rg5 f6 15.Bf5+-) 1–0. boyquayks (2010) – zrenjanin (1955), gameknot.com, 2009.

3.c4 a5 4.b5 (4.c5 Be7=) 4...Qf6 (4...Nf6 5.e3=) 5.e3 (5.Nf3 b6+=) 5...b6 (5...Ne7 6.Qh5=) 6.d4 (6.f4 Qf5+=) 6...e4 (6...Bb7 7.Nf3 e4 8.Nfd2=) 7.Qc2 Qe6 (7...Bb4 8.Kd1 Bb7 9.c5+=) 8.Nd2 (8.c5 bc5 9.dc5 Bf8+/-) 8...a4 (8...Bb4!?+=) 9.Qe4 (better is 9.c5 a3 10.Bc3+-) 9...a3?? (9...Qe4 10.Ne4 Bb4 11.Bc3 Bc3 12.Nc3+-) 10.Qe6 (better is 10.Qa8 ab2 11.Rb1+-) 10...de6 11.Bc3 Bb7 (11...Nf6 12.e4 Nfd7 13.Ngf3+-) 12.Ngf3 (better is 12.c5 Be7 13.Nc4+-) 12...c6? (12...Nf6 13.Bd3+/-) 13.Be2 (13.d5 Nf6 14.bc6 Nc6 15.dc6 Bc6+-) 13...c5?? (better is 13...Nf6+-) 14.dc5 Bc5 (14...Bf8 15.c6 Nc6 16.bc6 Bc6+-) 15.Bg7 Bb4 (15...Nd7 16.Bh8 Ngf6 17.Rd1+-) 16.Bh8 Nd7 17.0-0 (17.Rb1 Bd2 18.Kd2 Ngf6+-) 17...Nh6 (17...Ngf6 18.Rad1+-) 18.Rfd1 (better is 18.Rad1!? 0-0-0 19.Bg7 Nf5+-) 18...0-0-0 19.Bd4 (better is 19.Bg7 Nf5 20.Bd4 e5+-) 19...f6 (19...e5 20.Ne5 Ne5 21.Be5 Bd2 22.Bf4+-) 20.Nb3 (better is 20.Rab1!? Be7+-) 20...e5 21.Bb6! Rg8 (21...Nb6 22.c5 Passed pawn) 22.Ba5 Be7 (22...Ba5 23.Na5 Nc5 24.Rd6 Bf3 25.Bf3+-) 23.Rac1 (23.c5 Be4 24.Rac1 Nf8+-) 23...e4 (23...Nc5 24.Nc5 Bc5 25.Rd5+-) 24.Nfd4 f5 (24...Ne5 25.c5 Bd5 26.g3+-) 25.c5 f4 26.c6 fe3 27.cb7 Kb7 28.Rc7 Kb8 29.Nc6 Ka8 30.Ra7 1–0. retiponziani – karlsdad, ChessWorld.net, 2011.

3.c4 Qf6 4.c5 Be7 5.Nf3 d6 6.d4 e4 7.Nfd2 dc5 (7...e3!? 8.fe3 dc5 9.bc5 Bc5=) 8.Ne4= Qf5 (8...Qb6 9.Nc5 Qb4 10.Bc3+=) 9.Ng3 (9.Nc5 b6 10.Qa4 c6+/-) 9...Qd5 (better is 9...Qf6!?+=) 10.e4+/- Qc6 11.b5 (11.bc5!? Nf6 12.Nc3+-) 11...Qb6 12.d5 a6 (12...Nf6 13.e5 Ng4 14.Be2+/-) 13.Nc3 (13.Bg7!? Bf6 14.Bf6 Qf6 15.Nd2+-) 13...ab5 14.Be2 (better is 14.Bb5!? Bd7 15.Bd7 Nd7 16.Qc2+/-) 14...b4 15.Na4 (better is 15.Nb5 f6 16.e5+=) 15...Qd6?? (15...Qa5 16.Nh5 f6 A) worse is 17.Ng7 Kf8 18.Bg4 A1) 18...Kg7?! 19.Bc8 h5 20.Nc5 Bc5 21.0-0+= (21.Bb7? b3 22.Ke2 Qb5 23.Qd3 Qb7 24.Qb3 Qa6 25.Qd3 Qd3 26.Kd3 Bf2–+); A2) 18...Qa4–+; B) 17.Bg4 Bg4 B1) worse is 18.Qg4 g6 (18...Qa4? 19.Ng7 Kf7 20.Ne6+-) 19.Nf6 Kd8 20.Nh7 B11) 20...Rh7? 21.Qg6 Nf6 22.Bf6 Qa4 23.Be5+- (23.Qh7?! Bf6 24.Rc1 Bc3 25.Kf1 Qa6 26.Kg1 Nd7=); B12) 20...Nh6 21.Qg6 Ra6=; B2) 18.Ng7 Kd8 19.Qg4+-) 16.0-0?? (16.Bg7 Bf6 17.Bh8 Bh8+-) 16...Bh4?? (16...Bd7 17.Nc5 Qc5 18.Bg7+=) 17.Nf5?? (better is 17.Bg7 Bf6 18.Bh8 Bh8 19.Rc1+-) 17...Bf5+= 18.ef5 Nf6 (18...Bf6 19.Re1 Kf8 20.Bb5+=) 19.Bb5 Nbd7 20.Re1 Kd8 21.Bd7 Qd7 22.Nc5+= Qc8?? 23.d6 cd6?? 24.Qd6 Nd7 25.Rad1 Be7 26.Re7 1–0. alaamattar (2140) – jomunoz (1810), net–chess.com, 2010.

3.c4 Qg5 4.Nf3+/- Qg6 (4...Qd8 5.c5 Be7 6.Ne5+=) 5.Ne5 (5.c5 Be7 6.Ne5 Qh5+/-) 5...Be5+= 6.Be5 Qe4?? (better is 6...d6 7.Bb2 Nf6+=) 7.Bg7+- f6 (7...Qc4 8.a3+-) 8.Bh8 Qd4 (8...Qc4 9.e3 Qf7 10.d4+-) 9.Nc3 Qc4 10.e3 (10.e4 Qf7+-) 10...Qb4 (10...Qf7 11.Qf3+-) 11.Qh5 Ke7 (11...Kf8+-) 1–0. Moxie – clif, Live Game Caissa's Web, 2005.

3.d4 Bb4 4.c3 Bd6 5.Nd2 ed4 6.cd4 Nf6 7.Ngf3 0-0 8.e4 Bf4 –/+.

3.d4 ed4 4.Qd4 Nf6 5.b5 (5.a3 0-0=) 5...Be7 (5...Qe7 6.e3=) 6.e4= c5 (6...0-0 7.e5 Ne8 8.Nc3=) 7.Qd3 d6 8.Nf3 b6 (8...0-0 9.Nc3=) 9.Be2+= Bb7 (9...a6 10.Nc3=) 10.Nc3 0-0 11.0-0 Nbd7 12.Rfd1 Qc7 13.h3 (13.Nh4 Ne5 14.Qe3 Rfe8+=) 13...Rfd8 14.Qe3 Ne5 15.Nh4 Bc8 (better is 15...Re8!? 16.Qf4 Qd7+=) 16.f4+/- Ng6 17.Ng6 hg6 18.e5 de5 19.fe5 (19.Qe5?! Bd6 20.Rd6 Qd6= (20...Rd6? 21.Ne4 Rd7 22.Nf6 gf6 23.Qf6+-)) 19...Ne8 (19...Bf5 20.ef6 Bf6 21.Qf3 Bc2 22.Nd5 Rd5 23.Bf6 (23.Rd5?! Bb2 24.Rf1 Re8=) 23...Rd1 24.Bd1+- (24.Rd1?! Re8 25.Bc3 Bd1 26.Bd1 Qe7=)) 20.Bf3 Bb7 21.Nd5 Bd5 22.Bd5 (22.Rd5?! a6 23.e6 Nd6+-) 22...Rab8 23.Bc4 Rd1 24.Rd1 Rd8 (24...Kh7 25.Bf7 Bg5 26.Qf3+-) 25.Rf1 Kh7 (25...Kh8+-) 26.Bf7 (worse is 26.Rf7 Rd1 27.Kh2 Rb1+-) 26...Qd7 (26...Bf6 27.Bg6! Kg6 28.Qe4 Kf7 29.ef6+-) 27.Qe4 Nc7 (27...Kh8 28.Qg6 Qd2+-) 28.Qg6 1–0. pierre – tetley, internet, 2009.

3.e3 a6 4.Nf3 Nc6 5.a3 b5 6.Ne5 Ne5 7.d4 Nc4 8.Bc4 bc4 9.d5 Bb7 10.Bg7 Qg5 11.Bh8 Bd5 12.f3 Be5 13.Be5 Qe5 14.Nd2 Qe3 15.Qe2 Qe2 16.Ke2 c3 17.Nb1 Bc4 18.Kf2 0-0-0 19.Re1 d5 20.Nc3 d4 21.Ne4 d3 22.cd3 Bd3 23.Nc5 Bb5 24.Red1 Re8 25.Re1 Rd8 26.Rad1 Rd1 27.Rd1 Nf6 28.a4 Bc4 29.Ne4 Ne4 30.fe4 Bb3 31.Ra1 Kb7 32.a5 Kc6 33.Rb1 Bc2 34.Rc1 Kb5 35.Rc2 Kb4 36.Ra2 c5 37.Ke3 c4 38.Kd2 Kb3 39.Ra1 c3 40.Kc1 c2 41.g3 f6 42.g4 h6 43.h4 Kc3 44.Ra3 Kd4 45.Ra4 Kc3 46.g5 fg5 47.hg5 hg5 48.e5 Kb3 49.Rg4 Ka2 50.e6 Ka1 51.e7 Ka2 52.e8Q Ka1 53.Qa4# 1–0. NightEagle (2685) – Inder (2540), fics, 2001.

3.e3 b5 4.Bb5+/- Nf6 5.c4 (5.a3 a5+/-) 5...a6 6.Ba4 Bb4 7.Be5 Qe7 (7...Bb7 8.Nf3+/-) 8.Bb2 (8.Bc7 Qc5 9.Bf4 Qc4+/-) 8...Bb7 9.Nf3 0-0 10.0-0 Qe4? (10...Qe6 11.Na3+/-) 11.d3 (11.Bf6!? gf6 12.Qb3 Qe7+-) 11...Qe7 12.a3 Bc5 13.d4 Bb6 14.Nbd2 h6 15.Rc1 d6 16.Re1 Ba7 (16...Nbd7 17.d5+-) 17.Qb3 c6 (17...Bc8 18.Rb1+-) 18.e4 (18.d5 Ne8+-) 18...a5 (18...Qc7 19.Qe3+-) 19.e5 de5 20.Re5 Qc7 21.Rce1 Na6? (better is 21...Nbd7 22.Re7 Rfe8+-) 22.Re7 Nd7 23.Ne5 Bc8 (23...Rad8 24.c5 Ndc5 25.Rc7 Nb3 26.Rb7 Bd4 27.Nb3 Bb2 28.Nc6 Ra8+-) 24.Nf7! (worse is 24.Nc6 Bb8 25.Nf3 Qb6+-) 24...Rf7 25.c5 Rb8?? (25...Qf4 26.Rf7 Qf7 27.Bc6 Qb3 28.Nb3 Rb8 29.Re8 Kf7 30.Rc8 Rc8 31.Bd7 Rb8+-) 26.Qf7 1–0. Williams,Barry M – Harrison_Wilkie,E, NZCCA HT corr New Zealand, 1999.

3.e3 Nc6 4.b5 Na5 5.Bd3 (5.Bc3 b6+=) 5...c6 (5...Nf6 6.Qf3=) 6.a4 (6.f4 cb5 7.fe5 Bf8+=) 6...b6 (better 6...Nf6!?=) 7.f4!+/- c5 (7...ef4 8.Bg7 Pinning (8.Bg7 Deflection)) 8.fe5+- c4?? (better 8...Bf8+-) 9.ed6 Nb7 (9...Nf6 10.Bf5+-) 10.Be2 (10.Bg7!? cd3 11.Nf3 dc2 12.Qc2 Nd6 13.Bh8 Nf6+-) 10...f6 (10...Nf6 11.Bc4 Nd6 12.Bd3+-) 11.Ba3 Nh6 (11...Na5 12.Bb4+-) 12.Bc4 Na5 13.Ba2 Nf5 (13...Bb7 14.Qh5 Kf8+-) 14.Qf3 Rb8 (14...Ne3 15.Qe3 Kf8 16.Ne2+-) 15.Qf5 g6 (15...Bb7 16.Qh5 g6 17.Qh6+-) 16.Qh3 (16.Qd5 Qe7 17.de7 Nb3 18.Bb3 d6 19.Qf7 Kd7 20.e8Q) 16...f5 (16...Bb7+-) 17.Bb2 Rf8 18.Qh7 Qf6 (18...Qg5 19.Nf3 Nb7 20.Ng5 Nd6 21.Qg6 Ke7 22.Qg7 Kd8 23.Qf8 Ne8 24.Nf7 Kc7 25.Be5 d6 26.Bd6 Nd6 27.Qd6 Kb7 28.Bd5) 19.Bf6 Rf6 (19...Nc6 20.Qg6 Rf7 21.Qf7) 20.Qe7 1-0. Storminpawnin (2285) - Ronan mac, ChessWorld.net, 2014.

3.e3 Qf6 4.b5 Ne7= 5.Nf3 0-0 6.Be2 c6 7.0-0 a6 (8.a4 Ng6+=; 7...Bc7 8.c4=). makaveli1982 – forevercpat, internet, 2007.

3.e4 a6 4.Nf3 Nc6 5.d4 ed4=+ 6.Nd4 Bb4–/+ 7.Nd2 Nf6 8.Bd3=+ Bd2 9.Qd2= Nd4 10.Bd4 0-0 11.0-0 h6 12.e5 Nd5 13.c4 Ne7 14.Qc3 c6 15.e6 f6= 16.Rfe1 de6=+ 17.Re3 Nf5 18.Bf5=+ ef5 19.Rae1 Kh7 20.Re7+/- Kh8 21.R1e3?? Kg8 22.Bf6+= gf6?? 23.Rg3 Kh8 24.Reg7 Qd1 (25.Qe1 Qe1#) 0–1. gtate (1930) – howard (2050), net–chess.com, 2005.

3.e4 Nc6 4.a3 Be7 5.Nf3+= d6 6.h3 Nf6 7.b5 Na5 8.d3 Be6 9.Be2 Bd7 10.a4 b6 11.0-0 c6 12.d4 Ne4= 13.Nbd2 d5 14.Ne4+= de4 15.Ne5 0-0 16.f3 Bd6 17.Nd7+- Qd7 18.fe4 Bc7 19.Qd3 Rad8 20.Rae1 Qd6 21.e5 Qe7 22.Bg4 c5 23.d5 Qg5 24.d6 Bb8 25.Rf5 Qh4 26.Rh5 Qe1–+ 27.Kh2 g6 28.Rg5 Nb7 29.Bc3 Qc1 30.Bd2 c4! 31.Rg6?? fg6 32.Qd5 Kh8 33.Bc1 Nc5 34.Qc4 Rf2 35.Be3 Rff8 36.Bd4 (36…h5 37.Bf3+-; 36.Bh6!? Rg8 37.Bg5 Bd6 38.Bf6 Rg7 39.ed6 Rd6+-) 1–0. Fabbri (1695) – hris, internet, 2005.

3.e4 Ne7 4.Nf3 Ng6 5.a3 0-0 6.d3 c6 7.Be2 Bc7= 8.0-0 d5=+ 9.ed5 cd5 10.Nbd2 f5 11.h3 e4–+ 12.de4 de4 13.Bc4 Kh8 14.Ne5?? Qd7 15.Nd7+- (15...Nd7 16.Qe2+-) 1–0. grower – jonte, Live Game Caissa's Web, 2005.

3.f3 Qe7 4.a3= Nf6 5.e4 (5.Nc3 a5+=) 5...Nc6 (5...a5 6.c3+=) 6.Bc4= 0-0 (6...a6 7.Nc3=) 7.Ne2 a6 8.0-0 (8.Nbc3 b5 9.Bb3 Rb8=) 8...b5 9.Bb3 (9.Bd3 Qe6=) 9...a5 10.ba5 (10.Ng3 Nd4=) 10...Na5 (10...Bc5 11.Kh1+=) 11.d4 (11.Ng3 Bc5 12.d4 ed4 13.Bd4 Nc6+=) 11...Nb3 (11...ed4 A) 12.Qd4?? Bc5–+; B) worse is 12.Bd4 c5 13.Bf6 B1) 13...Nb3?? 14.Be7 (14.cb3?! Qf6 15.Nbc3 Be5+=) 14...Be7 15.cb3+-; B2) 13...Qf6+=; C) 12.Nd4 Nb3 13.Nf5 Bc5 14.Kh1=) 12.cb3= b4 (12...ed4 13.Bd4 (worse is 13.Qd4 Bc5–+) 13...Ba6 14.Nbc3=) 13.a4 (13.Ng3 Qe6 14.Nf5 Ba6 15.Nd6 Bf1 16.de5 Nh5 (worse is 16...cd6 17.ef6 Ba6 18.fg7+/-) 17.Kf1 cd6 18.ed6 Ra6=) 13...c5 (13...ed4 14.Bd4 (14.Qd4?? Bc5–+) 14...c5 15.Bb2+=) 14.d5= Ba6 15.Nd2 Nh5 (15...Bc7=) 16.Rc1 (16.Nc4 Bc4 17.bc4 Rfb8=) 16...Qg5 (16...Be2!? 17.Qe2 Nf4–/+) 17.Nc4= Be7 18.d6 (18.Ne5 Bf6 19.f4 Nf4 20.Rf4 Be5 21.Be5 Qe5=) 18...Bf6 (18...Bd8+=) 19.Qd5 (better is 19.Rf2+=) 19...Bd8?? (better is 19...Bc4!? 20.Qc4 Rfc8=) 20.Qa8 (20.f4 Bc4 21.Rc4+- (21.fg5 Bd5 22.ed5 Bg5+=; worse is 21.Qa8 Nf4 22.Nf4 Bf1 23.Rf1 ef4=; 21.bc4?! Qg4 22.Qa8 Qe2 23.Be5 Bg5+-)) 20...Bc4+/- 21.bc4 (21.Rc4 Qe3 22.Rf2 Bh4 23.Qf8 Kf8+=) 21...Qe3 22.Rf2 (better is 22.Kh1!? Qe2 23.Be5+/-) 22...Bh4= 23.Qf8 Kf8 24.g3 Bf6 25.a5 Qb3+= 26.Ba1 Qa3 27.Rcf1+= Qa5 28.g4 Nf4 29.Nf4 ef4 30.Bf6 gf6 31.Rd1 b3 32.Rc1= Qa3 33.Rb1 Qb4 34.Rfb2 Qc4+= 35.Rb3 Qd4 36.Kf1 Qd6 37.Ke2 Ke7 38.Rd3= Qa6 39.Rbd1 d6 40.h4 Ke6 41.h5 Ke5 42.Ke1 Qa5 43.Ke2 Qa6 44.Ke1 Qa5 45.Ke2 Qa6 ½–½. Wall,Bill – Afrohut, internet, 2004.

3.f3 Qh4!? 4.g3 Qb4 –/+.

3.Nf3 a6 4.c4 b6 (4...Nf6!? 5.c5 Be7 6.Ne5 0-0=) 5.Ne5 Nf6 6.c5 (6.e3 Bb7+=) 6...Be7 (6...Be5 7.Be5 Nc6 8.d4=) 7.Qb3 (7.cb6 cb6 8.Na3 0-0=) 7...0-0 8.a3 (8.cb6 cb6 9.Nc3 d6+=) 8...d6 (8...bc5!? 9.Nc3 d6=+) 9.cd6= Bd6 (9...Qd6 10.d4 Be6 11.Qd3=) 10.Nf3 (10.d4 Be6 11.Qd3 Re8=) 10...Bg4 (10...a5 11.b5=) 11.Ne5 (11.Nc3 Be6 12.Qc2 Nbd7+-) 11...Be6 (11...Be5 12.Be5 Nc6 13.Bb2=) 12.Qc2= Nbd7 (12...Re8 13.d4=) 13.Nc6 Qe8 14.e3 Nb8? (14...Bd5!?=) 15.Nd4 (15.Nb8 Rb8 16.Bf6 gf6+-) 15...Bd7 16.Be2 Nc6 (16...Ba4 17.Qd3 Nc6 18.Nc3 Nd4 19.Qd4+-) 17.0-0 Be5 18.Nc6 Bb2 19.Qb2 Bc6 20.Nc3 Qe6 21.Rad1 Bb7 22.d4 Rab8 (22...Rfe8 23.Rd3+-) 23.d5! Qd6 (23...Bd5 24.Ba6 Deflection; 23...Nd5 24.Bc4 Decoy) 24.Bf3+- Rfd8 25.e4 (25.Qe2 a5 26.Qc4 ab4 27.ab4 Qe7+-) 25...h6 (25...Qe5 26.Rfe1+-) 26.Ne2+- Re8 27.Qc2 (27.Ng3 Rbc8+-) 27...Re5 (27...Rbc8 28.Qb1+-) 28.Rfe1 (28.Ng3 g6+-) 28...b5? (28...Rbe8 29.Rd4 c6 30.dc6 Qc6 31.Qc6 Bc6 32.Nc3+-) 29.h3 (29.Nd4 Rbe8 30.Re2 Rg5+-) 29...Bc8? (better 29...c6!? 30.dc6 Qc6 31.Qc6 Bc6+-) 30.Nd4 Bd7 31.Nf5 (better 31.Rc1 Rc8 32.Re3+-) 31...Qf8?? (better 31...Bf5 32.ef5 Rbe8 33.Re5 Re5+-) 32.Qc7+- Ree8 (32...Rbe8 33.Nd4+-) 33.Nd6 Red8 34.e5 Ne8 35.Ne8 Be8 36.e6 (36.d6 Bd7+-) 36...fe6 (36...Qd6 37.Qc5 fe6 38.Re6+-) 37.de6 Rd1 (37...Qf6 38.e7 Rdc8+-) 38.Rd1 Bg6 39.e7 Qc8 40.Rd8 (40.Rd8 Be8 41.Rc8 h5 42.Rb8 Kf7 43.Re8 a5 44.Rf8 Kg6 45.e8Q Kh6 46.Qh5) 1–0. retiponziani (1970) – blobo (1730), ChessWorld.net, 2020.

3.Nf3 c6 4.Ne5 Qe7 5.Nc4+- Nf6 6.Nd6 Qd6 7.a3 0-0 (7...Qe6 8.e3+-) 8.e3 Qe7 9.Bd3 (9.Qf3 Ne4+-) 9...d5 10.Bd4 (10.0-0 Nbd7+-) 10...Bg4 (10...Nbd7 11.Nc3+-) 11.f3 Be6? (better 11...Bc8!?+-) 12.Bc5+- Qc7 (12...Qd8 13.Bf8 Qf8 14.Nc3+-) 13.Bf8 Kf8 14.0-0 Nbd7 (14...Kg8 15.f4+-) 15.f4 Bg4 16.Qe1 Re8 (16...c5 17.Qh4 c4 18.Bh7+-) 17.h3 Bh5 18.g4 Ng4 19.hg4 Bg4 20.Qh4 h5 21.Nc3 f5 (21...Qd8 22.Qg3+-) 22.Qg5 Ne5 (22...d4 23.ed4 Qb6 24.Bf5 Qd4 25.Rf2 Nf6+-) 23.fe5 Qe5 24.Rf4 (24.Bf5?! Qg3 25.Kh1 Qh3 26.Kg1 Qg3 27.Kh1 Qh3 28.Kg1 Qg3=) 24...Re6 (24...Qe7 25.Rg4! hg4 26.Qf5 Qf6 27.Qd7+-) 25.Bf5 Rf6 26.Raf1 Ke7 (26...b6+-) 27.Qg7 Kd6 28.Qd7 1–0. Janek – Stugeman, internet free game, 2017.

3.Nf3 Qf6 (--> 2.Bb2 Qf6 3.Nf3 Bd6).

3.Nf3 Nh6 4.b5 b6 5.Ne5+/- 0-0 6.e3 Be5 7.Be5 d6 8.Qf3+- de5 9.Qa8 Nd7 10.Nc3 Nc5 11.a3 Qf6 12.Qf3 Bg4? 13.Qf6 gf6 14.Nd5 Re8 15.Nf6 Kf8 16.Ne8 Ke8 17.d4 ed4 18.ed4 Ne4 19.f3 Nc3 20.Kd2 Nb5 21.Bb5 Kf8 22.fg4 Ng4 23.Rae1 h5 24.Re8 Kg7 25.Re7 Kg6 26.Bd3 f5 27.Rf1 Kf6 28.Rc7 Nh2 29.Rf5 Ke6 30.Rcf7 Kd6 31.R5f6 Kd5 32.Rd7# 1–0. pierre (2380) – dudleys dynamo (1790), ChessWorld.net, 2005.

3.f4 Nc6 4.b5 (4.Nf3 Bb4 5.a3= Ba5 6.e3 Nh6 7.Ne5 Ne5 8.Be5 0-0=) 4...Nd4 (better is 4...ef4!? 5.Nf3 Ne5=+ 6.e4 Qe7 7.Bc4 f6 8.Bb3 c6=) 5.e3+= Nf5 (5...Ne6 6.fe5 Be7 7.Nf3 Bh4 8.g3 Be7+/-) 6.fe5 Bc5 (6...Bb4 7.Qg4 Qh4 8.Qh4 Nh4 9.a3+/-) 7.Nf3 b6 (7...Bb4 8.Nc3+/- d5+/-; 7...Ngh6 8.Bc4 0-0+/-) 8.d4 (8.Bd3!? Ngh6+-) 8...Bb4+/- (8...Ne3? 9.Qd3 Bb4 10.c3 Nf1 11.cb4 (11.Kf1?! Be7=; 11.Rf1?! Ba5+/-; 11.Qf1?! Be7=) 11...Nh2 12.Rh2+-) 9.Kf2 (9.c3 Be7 (9...Ne3? 10.Qd3+-) 10.Qd3 Nh4+/-) 9...Ngh6 10.h3 Nh4 (10...Bb7 11.Bd3+/-) 11.Nh4 Qh4 12.g3 Qe4 (12...Qg5 13.Qf3 Rb8 14.e4+/-) 13.Bg2 (13.Bd3 Qb7+/-) 13...Qf5 14.Bf3 (14.Kg1 Rb8+/-) 14...Bb7 15.c3 Be7 16.Nd2 g5 (16...a6!?+=) 17.Ke1 Rb8 (17...Bf3 18.Qf3 Qf3 19.Nf3+/-) 18.Bb7 Rb7 19.Qf3 Qc2? (better is 19...Qf3 20.Nf3 a6+-) 20.Qb7 Qb2 21.Ke2 Qb5 22.c4 Qa4 (22...Qc6 23.Qc6 dc6 24.Raf1+-) 23.Qc7 Bd8 24.Qb7 Nf5 25.Qf3 Ne7 26.g4 Nc6 27.a3 Na5 28.Kd3 b5 29.Qd5 Nb3? 30.Qb5 Qb5 31.cb5 Na1 32.Ra1 0-0 33.a4 f6 34.Rf1 Rf7 35.Ne4 Kg7 36.ef6 Bf6 37.Nf6 Rf6 38.Rf6 Kf6 39.e4 Ke6 40.Kc4 d6 41.a5 h6 42.a6 Kd7 43.e5 de5 44.de5 Ke6 45.b6! ab6 46.a7 Ke5 47.a8Q Kf4 48.Qc6 Kg3+- 49.Qh6 Kg2 50.Kb5 Kg3 51.Qg5 Kh3 52.Qh5 Kg3 53.g5 Kf4 54.g6 Ke4 55.Qg5 Kd4 56.Qf5 Kc3 57.Qe4 (57...Kb2 58.g7 Ka1 59.Qe2 Kb1 60.g8Q Kc1 61.Qg1#; 57.g7 Kb2 58.Qf2 Kc3 59.g8Q Kd3 60.Qc4#) 1–0. Trkn – ajax_60, itsyourturn.com, 2000.

3.g4 Nf6 4.g5 Ne4 5.Nc3 Ng5 6.b5 –/+.

3.g4 Qg5 4.a3 Qg4 5.Nf3 Nf6 6.Be5?? Nc6?? 7.d4 0-0?? 8.h3?? Ne4?? 9.hg4+- f6 10.Qd3 fe5 11.Qe4 b6 12.Qh7 Kf7 13.Rh6 Be7 14.Rg6 Rg8 15.c3 Ba6 16.Ne5 Ne5 17.de5 Bf8 18.Qh5 Be7 19.e6! de6 20.Bg2 Rac8 21.Be4 Rh8 22.Qe5 Bc4 23.Rg7 Kf8+- 24.Rh7 Rg8 25.Nd2 Bb5 26.0-0-0 Be2 27.Rdh1 Ke8 28.Qe6 (28...Rg7 29.Rh8 Rg8 30.Rg8#) 1–0. Turm87@ – Gregor123, mySchach.de, 2004.

4.c4 a5 5.c5 Bf8 6.Qa4 Nc6 7.b5 Nd4 8.e3 Ne6 9.Be5 =.

4.c4 b6 5.Nf3 Qe7 6.e3 Bb7 7.c5 bc5 8.bc5 Bc5 9.Be5 +=.

4.c4 Nc6 5.Nf3 Qf6 6.e4 Nd4 7.Be2 Qg6 8.Bd4 ed4 9.d3 =.

4.c4 f6 5.Nc3 a5 6.b5 Nh6 7.Nf3 0-0 8.d4 Nf7 9.e3 +=.

4.c4 Qf6 5.Nc3 Nc6 6.e4 Qg6 7.Nf3 Nf6 8.d3 b6 9.Nd5 +=.

4.c4 Nf6 5.c5 Be7 6.Be5 Nc6 7.d4 d6 8.cd6 Bd6 9.Bd6 +=.

4.e4 Nc6 5.Nc3 Nf6 6.Nf3 0-0 7.Bc4 b5 8.Ba2 Bb7 9.d3 =.

4.e4 Nf6 5.Bd3 b5 6.Nf3 Nc6 7.0-0 0-0 8.Re1 Re8 9.c4 +=.

5.Nc3 Nf6 6.e4 0-0 7.Be2 Nd4 8.0-0 b5 9.Nd4 =.

5.c4 b6 6.Qc2 Nf6 (6...f6 7.e3+=) 7.c5 e4 (7...Be7 8.cb6 cb6 9.Ne5+=) 8.cd6+/- ef3 9.dc7 Qc7 10.gf3 Qd6 11.Nc3 Bb7 (11...0-0 12.Ne4 Ne4 13.fe4+/-) 12.Rg1 Rg8? (better is 12...Nd4 13.Qd3 Qh2 14.Rg7 Ne6+-) 13.Ne4+- Ne4 14.Qe4 (14.fe4?! Rc8 15.Qc3 Ne7+/-) 14...Qe6 15.Qh7 (15.Bg7?! Qe4 16.fe4 Nd4 17.Bd4 Rg1+=; 15.Rg7?! Rg7 16.Bg7 f5+-) 15...0-0-0 16.Qd3 Ne5 17.Qc3 Kb8 (17...Nc6 18.a4 Kb8+-) 18.Qe5 Qe5 19.Be5 Ka7 20.Rg7 Rg7 21.Bg7 Re8 22.Rc1 Rc8 (22...d6 23.Rc7 Rc8 24.Rc8 Bc8 25.h4+-) 23.Rc8 Bc8 24.h4 d5 25.e4 de4 26.fe4 Bg4 27.Be2 Be6 (27...Bh3 28.h5 Bg2 29.d3+-) 28.Bf6 1–0. Haertig,Manfred – Haak,Dieter, T4–23.11 TSC, 2002.

5.c4 Qf6 6.e4 Nd4 7.c5 Be7 8.Nd4 ed4 9.Qc2 =.

5.d3 Nf6 6.c4 b6 7.e4 0-0 8.Be2 Bb7 9.0-0 =.

5.d3 h6 6.e3 Nf6 7.Nbd2 Qe7 8.Nc4 e5 draws heavy fire 8...e4? 9.de4+- Ne4 10.Bg7 Rh7 11.Bb2 Bb4 12.ab4 Qb4 13.Nfd2 b5 14.c3 Qe7 15.Ne4 bc4 16.Qf3 Kd8 17.Nf6 Rb8 18.Nh7 Rb2 19.Be2 Qd6 20.Qf6 Qf6 21.Nf6 Rc2 22.Ng4 h5 23.Nh6 Rc3 24.Nf7 (24...Ke7 25.Bh5+-) 1–0. Bonetti,Shane – guest608, ICC, 2002.

5.d4 ed4 6.e3 Nge7 7.ed4 Ng6 8.Be2 0-0 9.d5 =.

5.e3 Nf6 6.Be2 b6 7.0-0 0-0 8.d3 Bb7 9.e4 =.

5.e4 Nf6 6.Nc3 0-0 7.Be2 Nd4 8.0-0 b5 9.Nd4 =.

4.e4 Nf6 5.f4 (5.Nf3 Bb7 6.Bd3 0-0=) 5...ef4 (better is 5...Ne4!? 6.Qg4 Nf6+=) 6.e5+= 0-0? (better is 6...Be5 7.Be5 0-0 8.Bf4 Re8 9.Be3 a5+=) 7.ef6+- (worse is 7.ed6 Re8 8.Be2 cd6+/-) 7...Nc6 8.fg7?? (8.Qf3 Re8 9.Ne2 Rb8 (9...gf6?? 10.b5+-) 10.fg7 Ne5 11.Be5 Bb7+-) 8...Re8?? (8...Qh4 9.Ke2 Ba6 10.d3 Qe7 11.Kf3 Qe3 12.Kg4 f5 13.Kg5 Be7 14.Kh5 Qe6 15.Bf6 Qf6 16.Qg4 fg4 17.gf8Q Rf8 18.Kg4 Nd4 19.Nc3 Qf5) 9.Be2+- Ne5 (better is 9...Be5 10.Be5 Ne5+-) 10.d4?? (10.Kf1 Qf6+-) 10...Ng6?? (better is 10...Nc4! 11.Bc1 Qh4 (11...Kg7? 12.Nf3+-) 12.Kf1 Ne3 13.Be3 fe3–/+) 11.Nf3+- Nh4 (11...a5 12.b5+-) 12.0-0 Kg7 (12...Nf5 13.Nc3 Ne3 14.Qd2+-) 13.d5 (better is 13.Nbd2+-) 13...f6 (13...Kg8 14.Nbd2 Nf5+-) 14.Nh4 Kg8 (14...Be5 15.Nc3 Rg8 16.Bd3+-) 15.Bh5 (better is 15.Bd3 Re5 16.Be5 Be5 17.Qh5+-) 15...Ba6 (15...Re5 16.Be5 Be5+-) 16.Qg4 Kh8 17.Be8 Qe8 18.Bf6 1–0. Fritz,Marco (1910) – Stahn,Hartmut (2000), remoteschach.de, 2001.

4.Nf3 Bb7 5.c4 Nc6 6.b5 Nd4 7.Nd4 ed4 8.Bd4 Qe7 9.Bg7 Nf6 10.Bh8 0-0-0 11.e3 Rh8 12.Nc3 Ne4 13.f3 Nc3 14.dc3 Rg8 15.g3 f5 16.Bg2 h5 17.0-0 h4 18.Re1 hg3 19.hg3 Bg3 20.Re2 Qh4 21.Kf1 Qh2 22.Qd4 Rh8 23.c5 Time forfeit 1-0. POLSKA_HUSARIA (2030) - Concordborn (1965), Rated Bullet game, lichess.org, 2015.

4.Nf3 Qe7 =.

4.Nf3 f6 5.e3 Ne7 6.Bc4 Bb7 7.Nc3 Ng6 8.e4 c6 9.d4 b5 10.Bb3 ed4 (10...Be7 11.0-0+=) 11.Nd4+/- Be5 12.Nf5 Kf8 ½–½. Huelle,Gunter (1835) – Boll,Erwin, Guben op, 2003.

4.Nf3 Qf6 +=.

4.f4 Bb7 5.fe5+= (5.Be5 Be5 6.fe5 Qh4 7.g3 Qd4–+) 5...Be7 6.Nf3 d6 7.ed6 Qd6 8.Bg7 (better is 8.e4 Qg6 9.Nc3+/-) 8...f6?? (better is 8...Bf3 9.ef3 Bh4 10.g3 Bg3 11.hg3 Qg3 12.Ke2 Qg7=) 9.Bh8 (9.e3 a5 10.b5 Nd7 11.Bh8 0-0-0+-) 9...Nh6 (9...Bf3 10.Nc3 (worse is 10.ef3 Qe5 11.Qe2 Qa1+-) 10...Bg4 11.g3+-) 10.Nc3 (better is 10.e3 Nc6 11.b5 Ne5+-) 10...Kf7 11.e3 Nc6 12.Bc4 Kg6 13.Bf6! Bf6 14.0-0 Ng4 15.Nh4! Bh4 16.Qg4 Kh6 17.Qh4 Kg7 18.Qg5 Kh8+- 19.Ne4 Ne5 20.Bd3 Rg8 21.Nd6 Rg5 22.Ne4 Rg8 23.Rf5 Nd3 24.cd3 Bc8 25.Rf4 c5 26.bc5 bc5 27.Nc5 a6 28.Raf1 a5 29.Rf8 Bg4 30.Rg8 Kg8 31.Rf4 Bh5 32.d4 Bg6 33.d5 Bf7 34.d6 Be6 35.d7 Bd7+- 36.Nd7 1–0. Fournier,Frederic – Rochade007, Partie evaluee, 5m + 0s, 2008.

4.f4 ef4!? 5.e4 Qh4 6.Ke2 Qg4 7.Ke1 Qg6 +=.

4.e4 Nf6 5.d3 0-0 6.Nf3 Qe7 7.Be2 Bc7 8.0-0 d6 9.Nbd2 b5 (9...d5 10.d4=) 10.h3 (10.c4 bc4 11.dc4 d5+=) 10...a5 11.c4 ab4 12.ab4 Ra1 13.Qa1 Re8 (13...bc4 14.dc4 Nh5 15.Qa7=) 14.cb5+= cb5 15.Nb3 (15.d4 Ba6 16.d5 Bb6+=) 15...Nc6 (15...Bb6 16.d4=) 16.Bc3 (16.d4 Rd8 17.Rc1 A) 17...Nb4? 18.Qa7 (18.Bb5?! Ne4 19.Qa7 Nd5=) 18...Ne4 19.Rc7+- (worse is 19.Qc7 Qc7 20.Rc7 Nd5+-); B) 17...Bb7=) 16...d5 17.Nc5 de4 (17...Bd6 18.d4 Bc5 (worse is 18...de4 19.Ne5 Na7 20.Qa2+=) 19.bc5 ed4 (worse is 19...de4 20.Ne5 Ne5 21.de5+=) 20.Bd4 Nd4 21.Nd4 b4+= (21...Qe4?! 22.Bb5 Bd7 23.c6+=)) 18.de4+/- Bb6 (better is 18...Bd6!? 19.Bb5 Bb7 20.Ne5 Be5 21.Nb7 Qb7 22.Bc6 Qc6 23.Be5 Qe4 24.Bf6 gf6+-) 19.Bb5+- Bc5 (19...Bb7 20.Nb7 Qb7 21.Ne5 (21.Be5?! Ne5 22.Ne5 Bf2 23.Rf2 Qb5 24.Rf6 gf6+=) 21...Bf2 22.Rf2 (22.Kf2?! Ne4 23.Kg1 Qb6 24.Kh2 Qb5=) 22...Qb5 23.Nf7 Kf7 24.Bf6 Re4 25.Bg7 Ke8 26.Qa2 Qb4 27.Qf7 Kd8 28.Qd5 Kc7 29.Bc3+-) 20.Bc6 (20.bc5?! Qc5 21.Qb2 Ne4+=) 20...Bf2 (20...Bd6 21.Be8 Ne8 22.Ne5 f6+-) 21.Rf2 (worse is 21.Kf2 Bd7 22.Bd7 Nd7+-) 21...Rd8 22.Be5 Bb7 (22...Qb4 23.Bf6 gf6 24.Qf6 Rd1 25.Kh2 Qd6 26.e5 Qf6 27.ef6 Rd6+-) 23.Bf6 (23.Bf6 gf6 24.Qa7+-) 1–0. alexp (2390) – gregorgysi (2280), net–chess.com, 2004.

4.e4 Nf6 5.Bd3 Qe7 (5...Bc7 6.Nf3=) 6.c4 (6.Nf3 Bc7=) 6...0-0 (6...a5 7.Qa4=) 7.Nf3 Bc7 8.Bc2 (8.0-0 d6=) 8...d6 (8...d5 9.ed5 cd5 10.cd5 Nd5 11.Be4+=) 9.0-0 (9.d4 ed4 10.Qd4 Bb6=) 9...h6 (9...Bb6 10.c5 dc5 11.bc5+=) 10.Re1 (10.d4 ed4 11.Qd4 Bb6+=) 10...Be6 (10...Bb6 11.d4=) 11.d3 (11.Bb3 c5=) 11...Nbd7 12.Nbd2 Bb6 (12...c5 13.Ba4=) 13.h3 (13.d4 ed4 14.Nd4 Bg4=) 13...a5 (13...Rfe8 14.d4 ed4 15.Nd4=) 14.d4 ed4 15.Nd4 ab4 (15...Ne5 16.Ne6 Qe6 17.Be5 Qe5 18.Nf3=) 16.ab4 Ra1 (16...Bd4 17.Bd4 Rfe8 18.Qe2+=) 17.Qa1 Ne5? (better is 17...Re8+=) 18.Bb3?? (better is 18.c5 Bc7 19.f4+-) 18...Nd3+= 19.Re2 Nb2 (19...Nh5 A) worse is 20.Ne6 fe6 21.c5 Nhf4–+ (21...Nb2?! 22.cb6 Nd3 23.Re3–/+); B) 20.Bc3+=) 20.Ne6 (20.Qb2 Nh5 21.Ne6 fe6 22.c5–/+) 20...fe6+= (20...Qe6?! 21.Qb2 Qe7 22.Bc2=) 21.Qb2 Nh5 22.Nf3?? (22.c5 Nf4 23.Re3 dc5–/+) 22...Nf4?? (better is 22...Rf3 23.c5 Nf4–+) 23.Rd2–/+ Kh8 (23...Nh3 24.Kh1 Rf3 25.gf3 Qh4 26.Rd5 Nf2 27.Kg2 Qh3 28.Kg1 Qh1) 24.Kh2 Bc7 (better is 24...Qf7 25.Bd1 Qg6=) 25.Ng1 (better is 25.Qc3!?=) 25...d5–/+ 26.g3 Qb4 27.ed5 ed5 28.cd5 Nd5 (28...cd5?! 29.Qc2+=) 29.Bd5 (29.Re2 Qc3–/+) 29...Qb2 30.Rb2 cd5 31.f4 b6 (31...Rb8 32.Nf3 b6 33.Ne5–/+) 32.Kg2 Rd8 (32...Ra8 33.Ne2+=) 33.Nf3 (33.Ne2–/+) 33...d4 (33...Kg8!?–/+) 34.Kf2 (34.Rd2 d3=) 34...Kg8 (34...Bd6+=) 35.Nd2 (35.Rd2 b5 36.Nd4 Bb6+=) 35...Kf7+= 36.Nc4 Attacking the isolated pawn on b6 36...d3 37.Ke3 Ke7 38.Kd2 g5–/+ 39.fg5 hg5 40.g4 Bf4–+ 41.Kd1 Ke6 42.Rb6–/+ Kd5 43.Nd2 Bd2?? 44.Kd2= Kc4 45.Rg6 Re8 46.Rd6 Re2–/+ 47.Kd1 Re3 48.Rc6+= Kd4 49.Rg6 ½–½. alaamattar (2135) – gregorgysi (2100), net–chess.com, 2005.

9.0-0 Rd8 10.Nbd2 d5 11.cd5 Nd5 12.Qc2 f6 13.d4+= ed4 14.Nd4 Nd7 15.e4 Nf4= 16.Bc4 Kh8 17.Nf5 Qe8 18.Nf3 Ne5 19.Ne5 Be5 20.Ng3 Be6 21.Be6 Ne6 22.Rad1 a5 23.Rd8+= Qd8 24.Rd1 Qc7 25.Be5 fe5 26.Nf5 ab4 27.ab4 g6 28.Nh6 Nd4 29.Qc4 Kg7 30.Ng4 Qd7 31.Ne3 Rd8 32.h3 Qe7 33.Ra1 b5=+ 34.Qa2 Rd7 35.Qb2 Ra7 36.Ra7 Qa7 37.Ng4 Qe7 38.f4 Qa7 39.Kh2 ef4 40.Ne5 Kf8 41.Qc3 Attacks the backward pawn on c6 41...Ne2 42.Qe1? Qc7 43.Ng4 h5–/+ 44.Nf2? f3–+ 45.Kh1 fg2 46.Kg2 Qg3 47.Kh1 Nf4 48.Qf1 Qf3 49.Kh2 g5 50.Qg1 g4! 51.hg4 hg4 52.Qg3=+ Ne6 53.Qf3 gf3 54.Kg3 Nd4 55.Kf4 Ke7 56.Ke3 Nc2–+ 57.Kf3 Nb4 58.Kf4 Nc2 59.Nd3 b4 60.e5 b3 ½–½. Schmidbauer,Josef – Grimm,Stefan, Niederbayern–ch, 2002.

10.Qc2 a5 11.Nc3 ab4 12.ab4 Nbd7 13.Ng5 Bf5 14.e4 Bg6 15.Nf3.

10.Qc2 a6 11.Nbd2 Nbd7 12.d4 h6 13.h3 Rad8 14.Rfd1 Rfe8 15.Bd3.

10.Qc2 Nbd7 11.h3 a5 12.Nc3 d5 13.cd5 Nd5 14.Nd5 Bd5 15.e4.

10.Qc2 Re8 11.Nbd2 Nbd7 12.d4 Bg4 13.h3 Bh5 14.de5 Ne5 15.Rfe1.

10.Qc2 h6 11.h3 Nbd7 12.Nbd2 Bf5 13.Ne4 Ne4 14.de4 Bg6 15.Bc3.

10.Nc3 Nbd7 11.Qc2 h6 12.h3 Rfd8 13.Rfe1 Rf8 14.Red1 Rfd8 15.e4.

10.Nc3 h6 11.d4 Nbd7 12.d5 cd5 13.cd5 Bf5 14.Qb3 Rfc8 15.Rfc1.

10.Nbd2 Nbd7 11.Qc2 h6 12.d4 Bg4 13.h3 Bh5 14.e4 Bf3 15.Nf3.

10.Nbd2 Bf5 11.e4 Bg6 12.Nh4 Nbd7 13.Qc2 Bb6 14.Ndf3 a5 15.h3.

10.Nbd2 h6 11.Qc2 Nbd7 12.h3 Bf5 13.Nb3 Bh7 14.e4 Rac8 15.Rfe1.

10.Ng5 Bf5 11.Nc3 Nbd7 12.e4 Bg6 13.Nf3 h6 14.Qc2 a5 15.Nh4.

10.h3 a5 11.Nbd2 Nbd7 12.Ng5 Bf5 13.Ndf3 Nb6 14.Qc2 h6 15.Ne4.

10.h3 Nbd7 11.Nc3 h6 12.Qc2 Rfc8 13.e4 Re8 14.Bc1 Bb6 15.Na4.

10.h3 h6 11.Nbd2 Nbd7 12.Qc2 Bf5 13.Ne4 d5 14.Ng3 Be6 15.cd5.

10.Qb3 a6 11.Nfd2 Bf5 12.Nc3 Nbd7 13.h3 Bb6 14.Qc2 a5 15.Bf3.

10.Qb3 Be6 11.Nbd2 Nbd7 12.Qc2 Bf5 13.h3 a5 14.Rfe1 Bg6 15.Nb3.

10.Qb3 Bf5 11.Nc3 Nbd7 12.e4 Bh7 13.Nd1 a5 14.Ne3 Ra7 15.Nh4.

10.Qc2 a5 11.Nc3 Be6 12.d4 Nbd7 13.Rfd1 ed4 14.Nd4 Ne5 15.Ne6.

10.Qc2 a6 11.Nbd2 Bf5 12.Nh4 Bh7 13.Nb3 Nbd7 14.g3 Qe6 15.Rfd1.

10.Qc2 Nbd7 11.Nc3 Nb6 12.Ne4 Bf5 13.c5 dc5 14.Nc5 Bd6 15.e4.

10.Qc2 Rd8 11.h3 Bf5 12.e4 Bh7 13.Nc3 a5 14.Rfb1 Na6 15.Qb3.

10.Qc2 Be6 11.h3 Nbd7 12.Nbd2 Bf5 13.e4 Bh7 14.Rfe1 a5 15.Nb3.

10.Qc2 Re8 11.Nc3 Be6 12.Rfd1 Nbd7 13.d4 ed4 14.Nd4 a5 15.b5.

10.Qc2 Bf5 11.e4 Bh7 12.Nc3 Nbd7 13.Nd1 a5 14.Ne3 Bb6 15.Bc3.

10.Nc3 Nbd7 11.Qc2 Nb6 12.Ne4 Re8 13.Rfd1 a5 14.h3 ab4 15.ab4.

10.Nc3 Be6 11.d4 Nbd7 12.d5 cd5 13.cd5 Bf5 14.Rc1 Bb6 15.Qb3.

10.Nc3 Bg4 11.e4 a5 12.h3 Be6 13.d4 ed4 14.Nd4 Nbd7 15.Qd2.

10.Qd2 a5 11.Nc3 Be6 12.Rfe1 ab4 13.ab4 Nbd7 14.e4 Nb6 15.h3.

10.Qd2 Bd7 11.Nc3 Be6 12.e4 Nbd7 13.h3 Bb6 14.d4 ed4 15.Nd4.

10.Qd2 Nbd7 11.Qc2 Nb6 12.Nbd2 Bf5 13.h3 Nbd7 14.Ne4 Rac8 15.Ng3.

10.Qd2 Rd8 11.Nc3 Be6 12.h3 Nbd7 13.e4 Nb6 14.a4 a5 15.b5.

10.Qd2 Be6 11.Qc2 a5 12.Nbd2 ab4 13.ab4 Na6 14.Bc3 Bd7 15.Qb2.

10.Qd2 Re8 11.Nc3 Be6 12.e4 Nbd7 13.h3 Bb6 14.Rfe1 Rad8 15.Na4.

10.Qd2 Bf5 11.e4 Be6 12.Nc3 Nbd7 13.h3 Bb6 14.d4 ed4 15.Nd4.

10.Qd2 Bg4 11.h3 Be6 12.Qc2 Nbd7 13.Nbd2 Bf5 14.Ne4 d5 15.Ng3.

10.Nbd2 a5 11.Qa4 Bf5 12.e4 Bd7 13.b5 cb5 14.cb5 Na6 15.d4.

10.Nbd2 Be6 11.Qc2 Nbd7 12.Rfe1 Kh8 13.e4 c5 14.Bc3 Kg8 15.Nf1.

10.Nbd2 Bf5 11.h3 Nbd7 12.Qc2 a5 13.e4 Be6 14.d4 ed4 15.Nd4.

10.Re1 a5 11.Nc3 Be6 12.Qd2 Nbd7 13.e4 Nb6 14.b5 Nfd7 15.Rab1.

10.Re1 Nbd7 11.h3 Nb6 12.Nbd2 Bd7 13.Qc2 a5 14.c5 dc5 15.bc5.

10.Re1 Be6 11.Nbd2 Nbd7 12.Qc2 Bf5 13.e4 Bh7 14.Nf1 a5 15.Ne3.

10.Re1 Bf5 11.Qc2 a5 12.e4 Bd7 13.Nc3 Na6 14.Qb3 ab4 15.ab4.

10.e4 a5 11.Nc3 Na6 12.Qb3 Bd7 13.Rfe1 ab4 14.ab4 c5 15.bc5.

10.e4 Bb6 11.Nc3 Be6 12.Na4 Nbd7 13.Qc2 Bc7 14.d4 Bg4 15.Rfe1.

10.e4 d5 11.Nbd2 d4 12.Nh4 Ne4 13.Ne4 Qh4 14.Bf3 f5 15.g3.

10.e4 Be6 11.Nbd2 Nbd7 12.d4 Bg4 13.Nh4 Be2 14.Qe2 g6 15.Nhf3.

10.h3 a5 11.Nbd2 ab4 12.ab4 Ra1 13.Qa1 Na6 14.Bc3 Bf5 15.Qb2.

10.h3 a6 11.e4 Be6 12.Nc3 Nbd7 13.Qc2 Nb6 14.Qd2 d5 15.ed5.

10.h3 Bb6 11.Nbd2 Be6 12.Qc2 Nbd7 13.d4 Bc7 14.e4 ed4 15.Nd4.

10.h3 Nbd7 11.Nbd2 Nb6 12.Ne4 Ne4 13.de4 f5 14.c5 dc5 15.bc5.

10.h3 Be6 11.Nbd2 Nbd7 12.Qc2 Bf5 13.Ne4 d5 14.cd5 Nd5 15.b5.

10.h3 Bf5 11.Nc3 Nbd7 12.e4 Bh7 13.Qd2 Rfe8 14.Bd1 Bg6 15.Bb3.

4.b5 Nd4 5.e3 (5.Nf3 Nf3 (5...Nf6 6.Nd4 ed4 7.Bd4 c5 8.bc6 dc6 9.Nc3 0-0) 6.ef3 Nf6 7.Nc3 b6 8.Bd3 Bb7 9.0-0 0-0; 5.Nc3 Nf6 (5...Ne6 6.Nf3 Nf6 7.e4 b6 8.Bc4 Bb7 9.0-0 0-0; 5...b6 6.e3 Ne6 7.Nf3 Nf6 8.Bc4 Bb7 9.0-0 0-0) 6.Nf3 Ne6 7.e4 b6 8.Bc4 Bb7 9.0-0 0-0) 5...Nf5 (5...Ne6 6.Bc4= (6.d3 Nf6 7.Nf3 a6 8.ba6 Ra6 9.Nbd2 0-0) 6...Nf6 7.Nf3 e4 8.Nd4 Bc5 9.Ne6 fe6) 6.Nf3 (6.Qh5 Qf6 (6...g6 7.Qh3 Nf6 8.g4 Ng7 9.Nc3 Be7) 7.Nc3 Qg6 8.Qh3 Nfe7 9.Bd3 Qe6; 6.Nc3 Ngh6 7.Bd3 0-0 8.Nf3 Be7 9.Ne5 d5) 6...Qf6 (6...Qe7 7.Bc4 (7.g4 Nh4 8.Nc3 Nh6 9.Rg1 Qf6) 7...a6 (7...Nf6 8.Nc3 e4 9.Ng5 0-0) 8.Nc3 Nf6 9.Ng5 Bc5+/- 0.75 (9...Nh6); 6...Nf6 7.e4 Nh6 8.Nc3 0-0 9.Bc4 Bc5) 7.Bc4 (7.d3 Nge7 (7...Ngh6 8.Nc3 0-0 9.Ne4 Qe7) 8.Nc3 Ng6 9.Ne4 (9.g3 Bc5) 9...Qe7) 7...Ngh6 (7...Nh4 8.Nh4 (8.Rg1 Nh6 9.h3 Nf3) 8...Qh4 9.d3 (9.Qe2 Nf6) 9...Nf6) 8.0-0 (8.Nc3 Nh4 (8...0-0 9.0-0 Nh4) 9.Rg1 (9.Ne4 Nf3) 9...e4+/- 0.73 (9...Nf3)) 8...0-0 9.Nc3 Ne7 (9...Nh4!?+=) 10.Ne4+/- Qg6 11.d3 Nef5 (11...Ng4 12.h3 Nf6 13.Ned2+/- (13.Ne5?! Be5 14.Be5 d5 15.Bf6 gf6=; < 13.Be5 Ne4 14.de4 Be5 15.Ne5 Qe4+=; 13.Nd6?! cd6 14.e4 a6+/-)) 12.Be5+- Nh4?? (better is 12...Be5 13.Ne5 Qb6+-) 13.Nh4 Be5 (13...Qg4 14.Qg4 Ng4 15.Bd6 cd6 16.Nf5+-) 14.Ng6 Ba1 (14...hg6 15.d4 Bf6 16.Nf6 gf6 17.Qf3+-) 15.Nf8 (better is 15.Ne7 Kh8 16.Qa1 d6+-) 15...Be5 (15...Bb2 16.Qh5 Kf8 17.Ng5+-) 16.Nh7! Kh7 17.d4 f5 (17...Bf6 18.Qh5 Be7 19.Bf7+-) 18.Ng5 (18.de5!? fe4 19.Bd5 g6+-) 18...Kg6 19.de5 Kg5 20.f4 Kg6 21.h3 Kh7 22.g4 fg4 23.hg4 d6 24.f5 a6 25.g5 ab5 26.gh6 bc4 27.hg7 Kg7+- 28.Qh5 de5 29.Qg6 Kf8 30.f6 c6 31.Qg7 (31...Ke8 32.Qe7) 1–0. Roos,Bernhard – Mills,Mark, CN.1999.0.00155, 1999.

4.b5 Nce7 5.Nc3 Nf6 (5...b6 6.Nf3 Nf6 7.e4 Bb7 8.Bc4 Ng6 9.0-0 0-0; 5...a6 6.Nf3 Nf6 7.e4 0-0 8.ba6 ba6 9.Bc4 Bb7) 6.e4 0-0 7.Nf3 b6 8.Bc4 Ng6 9.g3 a5.

4.b5 Nce7 5.e3 Nf6 6.Nf3 Ng6 7.h4 h5 8.d4 ed4 9.Bd4 b6.

4.b5 Nce7 5.e4 Nf6 6.Nc3 0-0 7.Nf3 c6 8.Bd3 a6 9.a4 Ng6.

4.b5 Nce7 5.Nf3 Nf6 6.Ne5 0-0 7.e3 Ned5 8.Bd3 Re8 9.Ng4 a6.

4.Nc3 Nf6 5.e4 0-0 (5...b6 6.Nf3 a5 7.Nb5 ab4 8.ab4 Ra1 9.Qa1 Ne4; 5...a5 6.b5 Nd4 7.Nf3 0-0 8.Bc4 Bc5 9.0-0 d6) 6.Bc4 a5 7.b5 Nd4 8.Nf3 b6 9.Nd4 ed4.

4.Nc3 Nf6 5.Nf3 e4 6.Ng5 Be5 7.b5 h6 8.Nh3 Ne7 9.d4 ed3.

4.c4 Nf6 5.b5 (5.Nc3 0-0 6.b5 Ne7 7.g3 Re8 8.Bg2 Nf5 9.Nf3 a6) 5...Na5 6.e3 0-0 7.Nc3 e4 8.d3 Re8 9.Ne4 Ne4.

4.e4 a5 5.b5 Nd4 6.Nf3 Qf6 7.Nd4 ed4 8.c3 Qe6 9.Bd3 dc3.

4.e4 b6 5.Nc3 Nf6 (5...a5 6.Nb5 Nf6 7.Nf3 0-0 8.Bd3 ab4 9.Nd6 cd6; 5...Bb7 6.Nf3 Nf6 7.Bc4 a5 8.0-0 ab4 9.ab4 Ra1) 6.Nf3 a5 7.Nb5 ab4 8.ab4 Ra1 9.Qa1 Ne4.

4.e4 b6 5.Bc4 Nf6 (5...Bb7 6.Nf3 Nf6 7.0-0 0-0 8.Re1 h6 9.Nc3 a5) 6.Nf3 Bb7 7.Nc3 0-0 8.0-0 a5 9.Nb5 ab4.

4.e4 b6 5.Nf3 Nf6 (5...Bb7 6.b5 Na5 7.Nc3 Nf6 8.Bd3 0-0 9.0-0 Re8) 6.Bc4 0-0 7.Nc3 a5 8.Nb5 ab4 9.Nd6 cd6.

4.e4 Nf6 5.Nc3 0-0 (5...a5 6.b5 Nd4 7.Nf3 0-0 8.Bc4 Bc5 9.0-0 d6) 6.Nf3 a5 7.b5 Nd4 8.Bc4 Bc5 9.0-0 d6.

4.e4 Nf6 5.Bd3 0-0 (5...b6 6.Nf3 Bb7 7.Nc3 a5 8.Nb5 ab4 9.Nd6 cd6; 5...a5 6.b5 Nd4 7.Nf3 Bc5 8.Ne5 d6 9.Nf3 Bg4; 5...Qe7 6.Nf3 0-0 7.Nc3 b6 8.0-0 Bb7 9.Nd5 Qd8; 5...b5 6.Nc3 a6 7.Nf3 Bb7 8.0-0 0-0 9.h3 Nd4; 5...a6 6.Nf3 0-0 7.Nc3 b5 8.0-0 Bb7 9.Re1 Rc8) 6.Nf3 b6 7.b5 Ne7 8.Ne5 Bb7 9.Qe2 Be5.

4.Nf3 Nf6 5.Nc3 e4 6.Ng5 Be5 7.b5 h6 8.Nh3 Ne7 9.d4 ed3.

4.f4 ef4!? 5.Nf3 Nf6-/+.

4.f4 f6 5.fe5 Be5 6.Be5 (6.d4 Bd6=) 6...Ne5 (6...fe5 7.Nc3=+) 7.e3 d5 8.Nf3 Bg4 9.Be2 h5 10.Ne5 fe5 11.Bg4 hg4 (11...Qh4!? 12.g3 Qg4 13.Qg4 hg4=) 12.Qg4+= Qh4 13.Qh4 Rh4 14.0-0 0-0-0 Black plans d4 15.Nc3 (15.Rf7 Rd7 16.Rf5 Rc4+/-) 15...d4 (15...Nf6 16.Rae1+=) 16.ed4+/- ed4 17.Ne2 b6 (17...Nf6 18.Nf4+/-) 18.c4 (18.Rae1 Re4+/-) 18...d3 19.Nc3 (19.Nf4!?+/-) 19...Rc4+= 20.Rf3 (20.Rf7 Rd7 21.Rf8 Rd8+=) 20...Nf6= 21.b5 Ne4 22.Ne4 Re4 23.Kf2 (better 23.Kf1=) 23...Re2-/+ 24.Kg3 Rd2 25.Rf7 g6 26.Rc1 (26.Kf3!?-/+) 26...Rc2-+ 27.Re1 (27.Rd1 Ra2-+) 27...d2 (27...Ra2 28.Rd1-+) 28.Rd1 Rc1 29.Rff1 Rd3 30.Kf2 (30.Kf4 Rc5 31.Ke4 Ra3 32.Rd2 Ra4 33.Kd3 Rb5-+) 30...Rc5 31.Ke2 (31.a4 Rd4-+) 31...Ra3 32.Rd2 Rb5 33.Rd3? (33.Rf7-+) 33...Rb2 34.Rd2 Rd2 35.Kd2 Ra2 36.Ke3 Rg2 37.h4 a5 38.Rf6 a4 39.Ke4 (39.Kf3 Rg1 40.Kf2 Rh1-+) 39...a3 40.Ke5 a2 (better 40...Rg4-+) 41.Ke6 (41.Rf8 Kb7 42.Rf1-+) 41...a1Q 42.Kf7 Kd7 43.Rg6 Qa2 44.Kg7 Rg6 45.Kg6 Qf2 46.h5 (46.Kg7 Ke6 47.h5 Qg1 48.Kf8 b5 49.h6 Qg6 50.h7 Qf7) 46...Qf4 (46...Ke6 47.Kg7 Qg3 48.Kf8 c5 49.h6 Qg6 50.h7 Qf7) 47.Kg7 Qf5 (47...Ke7 48.Kh7 Qg4 49.h6 Kf7 50.Kh8 Qg8) 48.h6 Ke7 49.h7 (49.Kg8 Qg6 50.Kh8 Kf7 51.h7 Qf6) 49...Qg5 (49...Qf6 50.Kg8 Qf8) 50.Kh8 Qf6 51.Kg8 Qf8 0-1. onam (2165) - olo (2350), net-chess.com, 2022.

5.b5 Na5 6.Nf3 0-0 7.e4 c6 8.Be2 cb5 9.Ne5 Re8.

5.b5 Nd4 6.e3 Nf5 7.Nf3 0-0 8.Nbd2 a6 9.ba6 Ra6.

5.c4 0-0 6.Nf3 Re8 7.Nc3 b6 8.g3 Bb7 9.Bh3 a5.

5.c4 a6 6.Nf3 0-0 7.Nbd2 b6 8.g3 Bb7 9.Bg2 a5.

5.c4 b6 6.Nf3 0-0 7.Nc3 Re8 8.g3 Bb7 9.Bg2 a5.

5.Nf3 0-0 6.b5 Na5 7.e4 c6 8.Ne5 Re8 9.Ng4 Ng4.

5.b5 Na5 6.Nc3 0-0 7.Bd3 Re8 8.Qf3 Be7 9.Nd5 d6.

5.Nc3 e4 6.f3 Be5 7.f4 Bc3 8.Bc3 a6 9.Ne2 0-0.

5.Be2 0-0 6.b5 Ne7 7.Nf3 e4 8.Ng5 Ned5 9.Nc3 Qe7.

5.Be2 b6 6.b5 Na5 7.Nf3 Bb7 8.Ne5 0-0 9.0-0 Ne4.

4.e3 0-0 5.Nf3 f5 (better is 5...Ng6!?+=) 6.Ne5 Be5 7.Be5 d6 8.Bb2 Ng6 9.Be2 f4 10.0-0 f3 (better is 10...Qg5!? 11.Bf3 Nh4+/-) 11.Bf3+- Nh4 12.Bg4 (12.Bd5!? Kh8 13.Qe2 c6+-) 12...Qg5 13.h3 Bg4 14.Qg4 Qh6 15.f4 Nd7?? (15...Nf5 16.e4 Ne7 17.Nc3+-) 16.Nc3 (better is 16.Qd7 Rf7 17.Qg4+-) 16...Nf6 17.Qg5 Rae8 (17...Qg5 18.fg5 Nd7+-) 18.Qh6 gh6 19.g3 Nf5 20.Kh2 Re7 (20...h5 21.Kg2+-) 21.g4 Nh4 (21...Ng7 22.f5+-) 22.Kg3 (22.f5!? Ref7+-) 22...Ng6 23.f5 Ne5 24.d3 Rg7 25.Ne4 (25.Kh4!? c6+-) 25...Ne4 26.de4 h5 27.Be5 de5 28.Rad1 hg4 29.hg4 Rf6 (29...h5 30.Rg1 Rg4 31.Kh3 Rg1 32.Rg1 Kf7 33.Rg5+-) 30.Rd8 Kf7 (30...Rf8 31.Rf8 Kf8 32.Rh1+-) 31.Rd7 (31.Rfd1!? Rd6 32.R1d6 cd6 33.Rd7 Kf6 34.Rg7 Kg7+-) 31...Kf8 (31...Kg8 32.Rg7 Kg7 33.g5+-) 32.Rg7 (32.Rfd1 Rff7 33.R7d5 Rg5+-) 32...Kg7 33.Rd1 Rf7 34.c4 Kh6 35.Rd5 Kg5 36.Re5 Rf6 37.Rd5 h5 38.c5 hg4 39.Rd7 Ra6 40.Rc7 Ra3 41.Rb7 Re3+/- 42.Kf2 Rf3? 43.Kg2 Kf4 Black intends g3 44.Ra7 g3? 45.f6 Rf2 46.Kg1 Kf3 47.Ra3 Kg4 48.Rg3 Kg3–/+ 49.e5 Rc2 50.f7?? Rc1 0–1. Fournier,Frederic (1865) – juancarrill0 (1640), Active, 2005.

4.Nf3+= Ng6 5.e4 0-0 6.Bc4 c6 7.d4 ed4? (better is 7...Qf6+=) 8.Qd4+- (8.Bd4?! Bc7+=; 8.Nd4?! Be5=+) 8...Qf6 9.Qf6 gf6 10.Bf6 Be5?? (better is 10...b5 11.Ba2 a5+-) 11.Ne5 Ne5 12.Be5 Re8 13.f4 d6 (13...d5 14.ed5 f6 15.dc6 Kg7 16.cb7 Bb7 17.0-0 fe5 18.fe5+-) 14.Bd6 Re4 15.Be2 Bg4 16.Nc3 Re3 (16...Re6 17.Rd1 Nd7 18.Kf2 Be2 19.Ne2+-) 17.Kd2 Rc3 (17...Re6 18.Bg4 Rd6 19.Ke3 Nd7+-) 18.Kc3 Be2 19.Rae1 Bg4 (19...Nd7 20.Re2 Nf6 21.Kb3+-) 20.Re8 Kg7 21.Bb8 (21...f6 22.Rhe1+-) 1–0. b4_player (2210) – stefanj (2010), GameColony.com, 2003.

4.c4 ab5 5.cb5 Ra5 6.e3 Nf6 7.Nf3 Qe7 8.Bc4 b6 9.Qb3 h6 (9...Bb7!?=) 10.d4+= Bb7 (10...ed4!? 11.Nd4 Bb4 12.Nc3 d5+=) 11.de5 Bb4 12.Nbd2 d5? (better is 12...Ne4+/-) 13.ef6+- dc4 14.Qc4 (14.fg7 Rg8 (14...cb3?? 15.gh8Q Qf8 16.Qe5 Kd8 17.ab3+-) 15.Qc4 Bd2 16.Nd2 Bg2+-) 14...Qd6? (14...gf6 15.0-0 Rg8+/-) 15.fg7+- Rg8 16.a3! Ba3? (16...Bf3 17.Qb4 Qb4 18.ab4 Ra1 19.Ba1 Bg2+-) 17.Ba3 Ra3 18.Ra3 Qa3 19.Qc7 Rg7 (19...Qa8 20.Nc4 Nd7+-) 20.Qb8 Bc8 21.Qc8 Ke7 22.Ke2 (better is 22.Qc7 Ke8 23.Ne5 Qa8+-) 22...Qb4 (22...Qc5 23.Qc5 bc5 24.g3+-) 23.Qc7 (23.Nd4 Rg6 24.Ra1 Qd4 25.Ra7 Kf6 26.Qh8 Rg7 27.ed4 Kg6 28.Nf3 Rg8 29.Qg8 Kf5 30.Qf7 Ke4 31.Re7) 23...Ke8 24.Qc6 (24.Ra1 Qb5 25.Nc4 Qc4 26.Qc4 Kd7 27.Rd1 Ke7 28.Qe4 Kf6 29.Rd6) 24...Ke7 25.Rc1 (25.Ra1!? Rg6 26.Ra7 Kf8 27.Ra8 Kg7+-) 25...Rg6 26.Ne5 Rc6 27.Nc6 (27.Nc6 Ke6 28.Nb4+-) 1–0. Fournier,Frederic – Chalvet,Philippe, Partie Libre (Active), 1996.

4.c4 ab5 5.cb5 c5 6.a4 b6 7.e3 Nf6 8.Nf3 0-0 (8...e4!? 9.Ng5 h6 10.Ne4 Ne4=) 9.Be5 Be5 10.Ne5 d6 11.Nf3 Nbd7 12.Be2 Ne5 13.0-0 Nf3 14.Bf3 Rb8 15.d4 Bb7 16.Nd2 cd4 17.ed4 Bf3 18.Nf3 (18.gf3?! Nd5=) 18...d5 19.Ne5 Ne4? (better 19...Ra8+/-) 20.Nc6+- Nc3 (20...Qg5 21.Nb8 Rb8+-) 21.Qd3 (21.Nd8?! Nd1 22.Nc6 Nc3 23.Nb8 Rb8+-) 21…Qg5 1-0. BeepBeepImAJeep (2610) - saddam_disney (1965), lichess.org, 2015.

4.e4 Bb7 5.Nc3 Nf6 6.f3 0-0 7.Bc4 a6 8.Nh3 Bc5 9.Na4 ab5 (9...Be7 10.ba6 Ba6 11.Ba6 Ra6 12.Nc3+=) 10.Nc5= bc5 11.Bb5 Ba6 (11...c6!? 12.Bd3 Re8+=) 12.Ba6+= Ra6 13.Be5 Nc6 14.Qe2 Ra5 15.Bc3 Qa8? (better is 15...Nb4 16.0-0 Ra2+/-) 16.Ba5+- Qa5 17.0-0 Nd4 (17...Rb8 18.c3+-) 18.Qd3 Qb6 (18...Re8 19.c3 Nc6 20.Rfb1+-) 19.Rab1 Qe6 20.c3 Nc6 21.a4 (21.Nf4 Qa2 22.Ra1 c4 23.Ra2 cd3 24.Nd3 Rb8+-) 21...c4 22.Qe3 Ne5 (22...Ra8 23.Nf4 Qe7 24.Ra1+-) 23.Nf4 (23.Qc5 Nd3 24.Qc7 d5+-) 23...Qd6 (23...Qc6 24.Rb5 d6 25.Qa7+-) 24.Rb5 (24.Qd4 Qe7+-) 24...c6 25.Rb4 Rc8 26.d4 (better is 26.a5 Ra8 27.Ra1 h6+-) 26...Nd3? (26...cd3 27.Qd4 Qe7 28.Nd3 Nd3 29.Qd3 d5+-) 27.Nd3 cd3 28.Qd3 Nh5 (28...Qe6 29.Rfb1+-) 29.e5 Qe6 30.Rfb1 (30.Qe4 g6+-) 30...Nf4 31.Rb8 d6 (31...Nd3?? 32.Rc8 Qe8 33.Re8) 32.Rc8 Qc8 33.Qf5! Ne6 (33...Qf5 34.Rb8 Mate attack) 34.ed6 f6 (34...h6 35.Qa5 Kh7 36.Qa7+-) 35.c4 (better is 35.Rb8! Qb8 36.Qe6 Kf8 37.Qe7 Kg8+-) 35...Qe8 (35...Kf7+-) 36.Re1 Kf7 37.d5 cd5 38.cd5 Nd4 39.Re8 (39.Qh5 g6 40.Qh7 Kf8 41.Re8 Ke8 42.Qe7) 39...Nf5+- 40.d7 1–0. dixi82 – Steve20, ChessWorld.net, 2006.

4.Nf3 Qe7 5.e3 Nf6 6.c4 Bb7 (6...a6 7.Be2=+) 7.Be2 (7.d4 Bb4 8.Nbd2 e4=) 7...c6 (7...a6 8.d4 e4 9.Nh4 Bb4 10.Nd2=) 8.a4 (8.0-0 0-0=) 8...a6 (8...0-0 9.0-0=) 9.Nc3 (9.d4 Bb4 10.Nbd2 e4 11.bc6 dc6=) 9...a5 (9...0-0 10.d3=) 10.Qc2 (10.0-0 0-0=) 10...c5 (10...0-0 11.0-0=) 11.d3 h6 (11...Bc7 12.0-0+=) 12.e4 0-0 (12...Bc7 13.0-0+=) 13.0-0-0 (13.Rc1 Nh5+=) 13...Ng4 14.Rdf1 (14.Rhf1 Bc7+=) 14...f5 (14...Bc7 15.h3 Nf6 16.g4+=) 15.h3+- fe4 (15...Nf6 16.ef5 Bc7 17.Nh4+-) 16.de4 (16.Ne4 Be4 17.de4 Nf6+-) 16...Nf6 17.Nh4 (17.Rd1 Bc7+-) 17...Ne4 (17...Qf7!? 18.Nf5 Bc7+-) 18.Ne4+- Qh4 19.Nd6 Bg2 (19...Qf4 20.Qd2 Qd2 21.Kd2 Bg2 22.Be5 Bh1 23.Rh1 Rf2 24.Rg1+-) 20.Rhg1 (better 20.Be5 Bh1 21.Rh1 Qg5 22.f4 Rf4 23.Bf4 Qf4 24.Qd2+-) 20...Bf1?? (better 20...Qf4 21.Qd2 Bf1 22.Qf4 Rf4 (worse 22...ef4 23.Rg7 Kh8 24.Rg4 Kh7 25.Bf1 Rg8 26.Bd3 Rg6 27.Rg6 h5 28.Rg7 Kh6 29.Nf5) 23.Bf1 Rf2 24.Be5 g5+-) 21.Bf1 (better 21.Rg7! Kg7 22.Be5 Qf6 23.Bf6 Kf6 24.Bf1+-) 21...Qf4? (21...Rf2 22.Qe4 Qe4 23.Ne4 Rf5+-) 22.Kb1+- Qf2?? (22...Rf6 23.Bg2 Nc6 24.Bd5 Kh8+-) 23.Qg6 (better 23.Rg7! Kg7 24.Be5 Qf6 25.Qg2 Kh8 26.Qf3 Kg7 27.Qg3 Kh8 28.Ne8 Kh7 29.Nf6 Kh8 30.Ne8 Kh7 31.Qg7) 23...Qf6 24.Qf6 Rf6 25.Be5 Rf2 (25...Re6 26.Rg7 Kf8 27.Rf7 Kg8+-) 26.Rg7 Kf8 27.Bg2 Re2 28.Rf7 Kg8 29.Ba8 Re5 (29...Re1 30.Kc2 Re2 31.Kc3 Re3 32.Kd2 Re5 33.Bd5+-) 30.Bd5 Re1 31.Kc2 Ra1 (31...Kh8 32.Rf8 Kg7 33.Rb8 Re2 34.Kd3+-) 32.Rf1 (32.Rf1 Kg7 33.Ra1+-) 1–0. jaddwarrior (1810) – fuzzyphil (1810), ChessWorld.net, 2015.

4.Na3 Be7 5.Nf3 e4 6.Bg7 ef3 7.ef3 Bf6 8.Qe2 Qe7 9.Qe7.

4.a4 a6 5.e3 (5.Nf3 Qe7=) 5...ab5 (5...Nf6 6.Qf3=) 6.ab5 Ra1 7.Ba1 Nf6 8.c4 (8.Nf3 Qe7=) 8...0-0 9.Nf3 Re8 10.Nc3 (10.d4 e4 11.Nfd2 Be7=) 10...Bc7 (10...e4 11.Nd4+=) 11.Be2 d5 Black plans e4 12.cd5 cd5 13.d4 e4 14.Nd2 Ba5 (14...Be6 15.Bb2+=) 15.0-0 Bc3 (15...Qd6!?+=) 16.Bc3+= Qc7 17.Qa1 (17.Bb4 Be6+=) 17...b6 (17...Bg4!? 18.Bd1 Bd1 19.Rd1 Ng4=) 18.Rc1+= Be6 19.Bb4 Qb7 20.Bd6 Rc8 21.f3 (21.Rc8 Bc8 22.Qc3 Be6+=) 21...ef3 22.gf3 Bf5 (22...Nbd7 23.Rc8 Qc8 24.Bd3+=) 23.Rc3 (23.Rc8 Bc8 24.Bd3 Be6+=) 23...Nbd7 (23...Ne8 24.Rc8 Qc8 25.Bf4+=) 24.Qc1 (24.Qa7 Qa8+= (24...Qa7?? 25.Rc8 Ne8 26.Re8 Nf8 27.Rf8)) 24...Rc3= 25.Qc3 Qa8 26.Bf1 Qe8 27.Bg2 Nf8 28.Kf2 (28.Qa3 Ng6=) 28...Qb5+= 29.e4 de4 30.fe4 Ng4 (30...Bg4 31.h3 Qe2 32.Kg1+=) 31.Kg3 (31.Kg1 Qe2 32.Bg3 Qd1 33.Nf1 Bd7=) 31...Bd7+= 32.h3 Nh6 (32...Nf6 33.Kh2+=) 33.d5 Qe2 (33...f6 34.Nc4=) 34.Nc4 b5?? (34...Ng6 35.Nb6 Nh4 36.Nd7 Qg2 37.Kh4 Qe4 38.Kg3 Nf5 39.Kh2 Nd6 40.Nf6 gf6 41.Qg3 Qg6 42.Qd6=) 35.Nb6?? (better is 35.Bf8!? f6 36.Nb6 Ng4+-) 35...Bf5? The backward pawn on e4 becomes a target 36.Bf8+- Kf8 37.ef5 Nf5 38.Kh2 Ne3?? 39.Qc8 Ke7 40.Qc7 Kf6 41.Qf4 Ke7?? 42.Qe5 Kd8 43.Qd6 Ke8 44.Qd7 Kf8 45.Qd8 1–0. Grecescu,Gabriel (1795) – Ibinceanu,Simona, Timisoara op, 1999.

4.a4 Bc7 5.d4 f6 (5...Ba5 6.Nd2 ed4 7.Bd4=) 6.de5 (6.e4!?+=) 6...fe5= 7.Nf3 Qe7 (7...d6 8.e4=) 8.Ba3 Qf6 9.e4 Ne7 (9...d5 10.bc6 bc6 11.ed5+=) 10.Be7 (10.Bc4!?+=) 10...Qe7= 11.Bc4 Ba5 12.Nfd2 d6 13.0-0 Be6 (13...Qh4 14.Bb3 Bb4 15.Nc4=) 14.Be6+/- Qe6 15.Nb3 Bb6 (15...Bc7 16.Qh5 Qf7 17.Qf7 Kf7 18.a5+=) 16.a5 Bc7 17.Nc3 0-0 18.a6 b6 (18...ba6 19.bc6 Nc6 20.Qd5 Qd5 21.Nd5+= (worse is 21.ed5 Nb4+=)) 19.bc6 (19.Qd3 Bd8+/-) 19...Nc6+= 20.Qd5 Qd5 21.Nd5 Bd8 22.Rfd1 (22.c4 Rc8+=) 22...Ne7 (22...Rc8 23.c4+=) 23.Ne3 Rf6 24.Nd2 Bc7 25.Rab1 Raf8 26.f3 b5 (better is 26...Rb8!?+/-) 27.Rb5+- Bb6 28.Ndc4 Bd4 29.Kf1 d5 (29...Rc8 30.Rb7 Re6 31.c3+-) 30.ed5 (better is 30.Nd5 Nd5 31.Rd5+-) 30...e4?? (30...Ra6 31.d6 Ng6+-) 31.Rd4 ef3 32.Rb7 fg2 33.Kg2 Rf2 34.Kg1 Nd5 35.Rd5 Re2 36.Rdd7 Re1 37.Kg2 Re2 38.Kh3 Re8 39.Rg7 Kh8 40.Rh7 Kg8 41.Rbg7 Kf8 42.Ng4 R8e3 (42...R8e3 43.Nce3 Re1 44.Rf7 Ke8 45.Nf6 Kd8 46.Rf8; 42...R8e7 43.Re7 Re7 44.Rh8 Kf7 45.Nd6 Ke6+-). orane (1935) – koenigsbauer (1900), Live Game Caissa's Web, 2003.

4.a4 Qe7 5.e4 (5.Na3 Nf6 6.Nf3 Bc7 7.Nc4 e4 8.Nd4 d5 9.Ne3) 5...Nf6 (5...Bc5 6.Nc3 Nf6 7.Bd3 d5 8.bc6 bc6 9.Nf3) 6.d3 (6.Nf3 Bc5 (6...Ne4 7.Qe2 f5 8.d3 Nf6 9.Ne5) 7.Ne5 (7.Bd3 d5 8.Qe2 Ng4 9.ed5) 7...Ne4= 8.Qg4 Nf2 9.Qg7; 6.Bd3 Bc5 7.Qe2 a6 8.Nf3 ab5 9.ab5) 6...Bc7 (6...Bc5 7.Nd2 0-0 8.Be2 d5 9.Ngf3) 7.Be2 (7.Nf3 d5 8.ed5 Nd5 9.Nbd2) 7...d5 8.Bf3 (8.ed5 Nd5 9.Nd2=+ –0.45 (9.Qd2 Bd7=+)) 8...0-0 (8...de4 9.de4 cb5 10.ab5 Qb4 11.Bc3 Qb5 12.Bd2–/+) 9.Ne2 (9.bc6 bc6 10.ed5 cd5=+; 9.Nd2–/+ –0.93) 9...Rd8 (9...de4 10.Ba3 c5 11.de4–/+) 10.ed5 (10.Nd2 cb5 11.ab5 de4 12.de4 Be6=+) 10...cd5 (better is 10...cb5 11.0-0 b4=+) 11.0-0? (better is 11.Nd2–/+) 11...e4–+ 12.Ba3?? (12.Ng3 ef3 13.Qf3–+) 12...Qe5 13.d4 (13.Ng3 Qa1 14.Be2–+) 13…Qh2 0–1. nay (2240) – jpettit (2395), net–chess.com, 2007.

4.Nc3 Qe7 (4...Nf6 5.Nf3 0-0 6.g3 Bc7 7.Bh3 d5 8.Bc8 Qc8 9.bc6; 4...a6 5.Ne4 Be7 6.Be5 Nf6 7.Nf6 Bf6 8.Bf6 Qf6 9.bc6) 5.Nf3 (5.e4 Nf6 6.Nf3 0-0 7.Bc4 cb5 8.Nb5 Bc5 9.0-0; 5.g4 h6 6.Nf3 Nf6 7.Nh4 Bc7 8.e3 g6 9.Bg2; 5.e3 Nf6 6.Nf3 0-0 7.Be2 Bc7 8.0-0 d5 9.Qc1) 5...Nf6 6.e4 0-0 7.Bc4 Bc5 8.0-0 cb5 9.Nb5.

4.c4 a6 5.Qa4 (5.Qc2 Qe7 6.Nf3 Nf6 7.Nc3 0-0 8.g3 ab5 9.cb5; 5.Nf3 Nf6 6.Nc3 0-0 7.e3 e4 8.Ng5 Qe7 9.Qc2; 5.Nc3 Nf6 6.Nf3 0-0 7.Qb3 Qe7 8.Rc1 ab5 9.cb5; 5.Qb3 Nf6 6.Nf3 e4 7.Ng5 Qe7 8.f3 ef3 9.Nf3; 5.d4 ab5 6.de5 Bb4 7.Bc3 Qa5 8.Qd2 Bc3 9.Nc3; 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.Nf3 Qe7 9.Nc3) 5...Nf6 6.Nc3 b6 7.Nf3 Bb7 8.Qc2 0-0 9.Ne4.

4.c4 cb5 5.cb5 Qe7 (5...Nf6 6.Qc2=) 6.Nc3 (6.Qc2 Bc5+=) 6...Nf6= 7.e3 0-0 8.Nf3 a6 (8...e4 9.Nd4 Be5 10.Qa4=) 9.Qb3 b6 (better is 9...e4 10.Nd4 Bc5=) 10.Nd5+/- Nd5 11.Qd5 Ra7 12.Be5 Be5 13.Qe5 Qe5 14.Ne5 ab5 15.Bb5 d6 16.Nc4 Ba6 (16...Be6!?+/-) 17.Nd6+- Bb5 18.Nb5 Ra5 19.a4 Nc6 (19...Nd7 20.Ke2+-) 20.Ke2 Nb4 21.Rhc1 Nd5 22.Rc6 Ra6 23.e4 Nf4 24.Kf3 Nd3 25.Ke3 Nb4 (25...Nc5+-) 26.Rc4 1–0. marcosramos (2360) – petemarkou (2170), net–chess.com, 2007.

4.c4 Qe7 5.Nc3 (5.Nf3 Nf6 6.Nc3 0-0 7.e3 e4 8.Nd4 Be5 9.Be2; 5.e3 Nf6 6.Nf3 0-0 7.Nc3 e4 8.Nd4 Be5 9.Be2; 5.Nh3 Nf6 6.Nc3 0-0 7.Qc2 a6 8.e3 ab5 9.cb5) 5...Nf6 6.Nf3 0-0 7.e3 e4 8.Nd4 Be5 9.Be2.

4.c4 Qf6 5.e3 cb5 6.cb5 Bc5 (6...Ne7 7.f4 Ng6 8.Nf3+=) 7.Nf3 d6 8.Be2 (8.d4 ed4 9.Bd4 Bd4 10.Nd4 Ne7+=) 8...Nd7 9.0-0 Ne7 10.d4 ed4 (10...e4 11.Nfd2 (worse 11.dc5 Qb2 12.Qd4 Qd4 13.Nd4 dc5–/+) 11...d5 12.f3+= (worse 12.dc5 Qb2 13.Nb3 Nc5=+)) 11.Nd4 Ne5 12.Nd2 Qg6 13.N2f3 Nf3 14.Bf3 d5 15.Rc1 Bd6 16.g3 (16.Qb3 Qh6 17.g3 0-0+-) 16...Bh3 17.Bg2 (17.Re1 0-0+=) 17...Bg2= 18.Kg2 0-0 19.Qc2 Qg4 20.h3 Qe4 21.Qe4 de4 22.Rc4 (22.f3 a6+=) 22...b6 (22...Rfc8 23.Rfc1 Rc4 24.Rc4=) 23.Rfc1 h6 24.Nc6 Nc6 25.Rc6 (25.bc6 Rfc8+=) 25...Bc5 (25...Rad8 26.R1c4 Rfe8 27.Ra4+=) 26.Bd4 (better 26.Rc4+=) 26...Rac8? (better 26...Bd4 27.ed4 Rfd8=) 27.Bc5+- Rc6 28.bc6 bc5 29.Rc5 Rc8 30.f3 ef3 31.Kf3 Kf8 32.Ke4 Ke7 33.Kd5 Kd8?? (better 33...Rd8 34.Kc4 Rc8+-) 34.Kd6 White prepares c7 34...f6 (34...Ra8 35.c7 Kc8 36.Re5+-) 35.c7 Ke8 36.Kc6 Rc7 (36...g5 37.Kb7 Rc7 38.Kc7+-) 37.Kc7 Kf7 38.Kd6 Kg6 (38...g5 39.Rc7 Kg6 40.Ra7+-) 39.g4 (39.Ra5!? a6 40.Ra6 h5+-) 39...a6 40.Ke6 h5 41.Rh5 a5 (41...f5 42.gf5 Kh5 43.e4 Kg5 44.Kf7 Kf4 45.Kg7 Ke4 46.Kg6 Kd3 47.f6 Kc2 48.f7 Kb2 49.f8Q Ka2 50.h4 a5 51.h5 Kb2 52.h6 Kc3 53.h7 Kd3 54.Qf5 Ke3 55.h8Q Kd2 56.Qb2 Ke3 57.Qbf2) 42.Ra5 (42.e4 a4 43.a3 f5 44.ef5) 42...Kh6 (42...f5 43.gf5 Kh7 44.f6 Kg6 45.f7 Kh7 46.f8Q g5 47.Kf5 g4 48.Ra7) 43.Kf7 (43.Rh5 Kg6 44.e4 f5 45.ef5) 43...f5+- 44.Rf5 g5 (44...g6 45.Rd5 Kh7 46.g5 Kh8 47.Kg6 Kg8 48.Rd8) 45.Rf6 Kh7 46.Re6 Kh8 47.Rh6 1–0. jaddwarrior (2095) – GSC speel (1610), ChessWorld.net, 2016.

4.c4 Nf6 5.Qc2 =.

4.c4 Nf6 5.Nc3 0-0 6.Qc2 Re8 7.Nh3 e4 8.e3 a6 9.Ng5.

4.e3 Nf6 =.

4.e4 Nf6 5.Nf3 0-0 6.Ne5 Ne4 7.Qg4 =+.

4.e4 Nf6 5.Nf3 Qe7 6.Bc4 Bc7 7.bc6 bc6 8.0-0 0-0 (8...Ne4 9.d3 d5 10.Bb3=) 9.d4 (9.Re1 Rd8=) 9...ed4 10.Re1 (worse is 10.Nd4 Qe5 11.g3 Ne4–/+ (worse is 11...Qe4 12.Bd3 Qg4 13.Nf5=)) 10...Ba6 (10...Ba5 11.Re2 c5 12.c3=) 11.Ba6+= Na6 12.e5 Ng4 13.Bd4 (13.h3 Nh6+=) 13...d5 14.h3 Nh6 15.Nbd2 (15.Qd3 Nc5 16.Bc5 Qc5=) 15...Nf5 (15...c5 16.Be3 Nf5 17.Bf4=) 16.c3 (16.Nb3 Rfb8=) 16...Nc5 (16...c5 17.Be3=) 17.Qe2 (17.Qc2 A) worse is 17...Nd4 A1) 18.Nd4?! Qd7= (worse is 18...Be5 19.Nc6 Bh2 20.Kh1+-); A2) 18.cd4 Ne6 19.Qc6+/-; B) 17...g6=) 17...Bb6 18.Bc5 Bc5 19.Nb3 Bb6 (19...Ng3 20.Qc2 Ne4 21.Nfd4=) 20.Nfd4 c5 1–0. marcosramos – gregorgysi (2310), net–chess.com, 2009.

4.Nf3 Nf6 5.Nc3 0-0 6.e3 Bc7 7.Be2 d5 8.0-0 e4 9.Nd4.

5.Nc3 0-0 6.h4 Bc5 7.Nf3 d5 8.Ne5 d4 9.Na2.

5.c4 Qe7 6.e3 0-0 7.Nc3 Bc7 8.Nf3 d5 9.d4 e4 10.Nd2 Nbd7 11.Be2 Re8 12.Rc1 Nf8 13.h3 Bf5 14.bc6 bc6 15.cd5 cd5 16.Qb3 Rab8 17.Qa2 Qe6 (better 17...Rec8=) 18.Nd5?? (better 18.g4 Bg6 19.g5+=) 18...Nd5-/+ 19.Bc4 Ba5 20.Bd5 Qb6?? (better 20...Bd2 21.Kd2 Rb2 22.Qb2 Qd5=) 21.Bf7+- Kh8 22.Be8 Qb2 23.Qb2 Rb2 24.0-0 (better 24.Rd1!?+-) 24...Bd2 25.Rc5 g6 26.Bb5 Bb4 27.Rc7 Ne6? (better 27...a5!?+/-) 28.Ra7+- Ra2? (28...h5 29.a5 Bd2 30.Bc4+-) 29.Rc1 (29.Rb1 Bd6 30.Ra6 Bf8+-) 29...Bf8 (29...Nf8+-) 30.Rc8 Kg8 (30...Ra1 31.Kh2 h5 32.Re8+-) 31.Bc4 Ra1 32.Kh2 1-0. BeepBeepImAJeep (2420) - stahlex (2275), lichess.org, 2017.

5.e3= 0-0 6.Nf3 e4 7.Nd4 Be5 8.Nc3 Qc7 9.Rb1.

5.Nf3 e4 6.Nd4 0-0 7.Na3 Bc7 8.g3 c5 9.Nb3.

5.g3 0-0 6.Nc3 Bc7 7.d4 Qe7 8.de5 Qb4 9.Qd2.

5.h3 e4 6.e3 0-0 7.Ne2 Bb4 8.Nbc3 d5 9.Nf4.

5.h4 0-0 6.h5 Bc5 7.Nf3 e4 8.Nd4 Ng4 9.e3.

5.Nc3 Nf6 6.e3 0-0 7.a3 (7.d4!? e4 8.Nd2=) 7...Bc7 8.bc6 bc6 9.Ne2 d5 10.d4 e4 11.Ne5 Ba6 12.c4 dc4 (12...Nfd7 13.cd5 cd5 14.Nd7 Be2 15.Nf6 Qf6 16.Be2 Ba5 17.Kf1–/+) 13.Qc2=+ Nfd7 14.Nc4 (14.Qe4? Be5 15.Ng3 Qd8–+) 14...Nb6 15.Ng3 Re8 16.Nd2 (e4 becomes the focus of attention) 16...Bf1 17.Kf1 Bg3 18.hg3 N8d7 19.Rc1 Rac8 20.Rh4 Nf6 21.Qc5 Qc5 22.dc5 Nbd5 23.Bf6 Nf6 24.Rc4 g5 25.Ne4 Ne4 26.Rhe4+/- Re4 27.Re4 Kf8 28.Rg4+- f6 29.Rb4 Rc7 30.Rb8 Ke7 31.Ke2 Ke6 32.Rd8 Ke7 33.Rd6 h5 34.e4 Kf7 35.Kd3 Ke7 36.Kc4 Kf7 37.f3 Ke7 38.Kd4 Kf7 39.Rd8 Ke7 40.Rh8 Rd7?? 41.Ke3 Rb7?? 42.Rh7 1–0. kamret (2240) – maniac_2001 (2135), GameColony.com, 2003.

5.Nc3 Nf6 6.e4 0-0 7.Bd3 Bc7 8.0-0 d5 9.bc6.

5.Nc3 Nf6 6.Nh4 Bc7 7.Nf5 Qb4 =+.

5.e4 Nf6 6.Nc3 0-0 7.Bc4 cb5 8.Nb5 Nc6 9.Nd6.

5.g3 Nf6 6.Nc3 Bc7 7.Bg2 d5 8.bc6 Nc6 9.Nb5.

4.e3 Nf6 5.c4 c6 (5...0-0 6.d4 Bb4 7.Nd2 ed4 8.Bd4 c5 9.Bb2 d5 10.a3 Ba5+=; 5...Bc5 6.Ne2 d6 7.d4 Bb4 8.Bc3 Bc3 9.Nbc3 Be6 10.Ng3 a6=; 5...a6 6.Nf3 0-0 7.Qc2 e4 8.Nd4 Bb4 9.a3 Ba5 10.ba6 Ra6=; 5...Bb4 6.a3 Ba5 7.Nf3 e4 8.Nd4 d6 9.Qa4 Bb6 10.Be2 Bc5=) 6.a4 (6.d4 Bb4 7.Nd2 e4 8.a3 Ba5 9.Ne2 0-0 10.Bc3 Bc7=) 6...0-0 7.Nf3 c5 (7...Bc7 8.d4 e4 9.Nfd2 a6 10.Nc3 b6=) 8.d3 Bc7 9.a5 (9.Nc3 Rd8 10.Be2 d5=) 9...d6 (9...d5 10.cd5 Nd5=) 10.Be2 a6 (10...d5=) 11.b6 Bd8 12.Na3 Nc6 13.Bc3 d5 14.cd5 Nd5 15.Bd2 Qe8 16.0-0 f6 17.Nc4 Be7 18.Ne1 Be6 19.Nc2 Qd7 20.Re1 Rfd8 21.Ra3 Rac8 22.Qb1 Ndb4 23.Nb4 cb4 24.Bb4?? Bb4–+ (24...Bb4 25.Ra2 Be1 26.Qe1 Qe7–+; 24...Nb4?! 25.Rc1–+) 0–1. Holtzmann,Sonny Reimer (1650) – Szucs,Matyas (1780), 9th Niki Open, 2011.

4.e4 Nf6 5.Nc3 c6 6.Qf3 0-0 7.a4 Bb4 8.Nd1 d5–/+ 9.Qg3? Bd2!–+ 10.Ke2 Nbd7 11.Ba3 Bb4 12.Bb4 Qb4 13.c3 Qe4 14.Qe3 Nc5 Black prepares the advance d4 15.f3 Qc2 16.Ke1 d4 17.Qd2 Qd2 18.Kd2 Nb3 (19.Kc2 Na1 20.Kb2 Rd8–+) 0–1. Rabold,Hans – Kampfhenkel,Ulrich, corr DDR Cup4 V37, 1973.

4.a4 0-0 5.e3 c6 6.c4 Bc7 7.Nf3 Ng6 8.Be2 d5 9.d4 e4 10.Nfd2 f5 (10...Nh4 11.Bf1=+) 11.g3 Nd7 12.Nc3 Nf6 13.Qb3 Be6 14.h4 (14.0-0 Qd7=) 14...h6 15.Ba3 Rf7 16.Rb1 Rb8 (16...cb5 17.Nb5 Bb8 18.Nc3=) 17.Qc2 Ng4 (17...Qd7 18.bc6 Qc6 19.Nb5=) 18.Nd1 (18.h5 Nh8=) 18...Ne7 19.bc6 bc6 20.cd5 cd5 21.Nb3 Bc8 22.Nc5 Rb1 23.Qb1 Ba5 24.Kf1 Ng6 25.h5 Nf8 26.Rh4 Nf6 27.Bb4? (better 27.Kg1=) 27...Qb6-+ 28.Bb5 Bb4 29.Qb4 a6 30.Nc3 ab5 31.ab5 Ra7 32.Kg2 Qa5 (better 32...Be6!?-+) 33.Qa5-/+ Ra5 34.b6 Ra3 (34...N8d7!? 35.b7 Rc5-+) 35.Nb5=+ Ra2 36.Nd6 White plans b7 36...Ba6 37.b7 Bb7 38.Ncb7 (worse 38.Ndb7 Ng4 39.Nd6 Ne3 40.Kg1 Ra1 41.Kh2 Ng4 42.Kg2 g6-+) 38...Ng4 39.Kg1 (worse 39.Nf5 Rf2 40.Kh3 Rf5 41.Kg4 Rf3-/+) 39...Nf2?? (better 39...g5 40.hg6 Ng6=) 40.Rh2+- Ra1 (40...Nh3 41.Rh3 Ne6 42.Rh4+- (42.Nf5?! Ng5 43.Rh4 Nf3 44.Kf1 Nh4 45.Nh4 Kf7+-)) 41.Kf2 Nh7 (41...Ra2 42.Kg1 Ra1 43.Kg2 Ne6+-) 42.Nf5?? (42.Rh4 Ra2 43.Kf1 Ra1 44.Ke2 Ra2 45.Kd1 Ra1 46.Kc2 Ra2 47.Kc1 Rf2+-) 42...Nf6?? (better 42...Ra2 43.Kg1 Ra1 44.Kg2 Ra2 45.Kh3 Ng5 46.Kg4 Rh2 47.Ne7 Kh7 48.Nd5 Rf2=) 43.Rh4+- Ra2 44.Ke1 Ra1 (44...Kh7 45.Nc5 Ra1 46.Ke2 Ra2 47.Kf1 Ra1 48.Kg2 Ra2 49.Kh3+-) 45.Kd2 Ra2 46.Kc3 Ra1 47.Nbd6 Rc1 48.Kd2 Rf1 (48...Ra1 49.Kc2+-) 49.g4 (49.Rf4!? Rf3+-) 49...Rg1 50.Ne7 Kh7 51.Ng6 (51.Kc3 Rc1 52.Kb2 Re1+-) 51...Ng4 52.Nf4 Rg3?? (52...Nf6+-) 53.Nd5 Rg2 54.Kc3 Nf2 55.Ne4 Ne4 56.Re4 Rh2 57.Re5 Rg2 58.Nf4 Rg1 59.Kd3 1-0. BeepBeepImAJeep - grandmatt (2530), lichess.org, 2017.

4.e3 A) 4...a6 A1) 5.Qh5 ab5 (5...Ng6 6.Nf3 ab5 7.Bb5 Ra5 8.Bd3 Bb4 9.Qg4 Nc6 10.Bf5 Qf6 11.a3 Bc5) 6.Be5 Be5 7.Qe5 0-0 8.Qb5 d6 9.Nf3 b6 10.d4 Nbc6 11.Bd3 Ba6; A2) 5.ba6 Na6 (5...ba6 6.Qh5 Nbc6 7.Nf3 Ng6 8.Bc4 Na5 9.Be2 Bb7 10.d4 Nc6 11.de5 Nce5) 6.Nf3 Nc6 7.Nc3 Bb4 8.a3 Bc3 9.Bc3 f6 10.Bb5 0-0 11.d4 e4; A3) 5.Nc3 Bb4 (5...b6 6.Ne4 Bb7 7.Nd6 cd6 8.f4 Ng6 9.Nf3 Qc7 10.Bd3 e4 11.ba6 Na6) 6.Qg4 Bc3 7.Bc3 Ng6 8.Qg3 d6 9.d4 e4 10.d5 ab5 11.Bb5 c6; A4) 5.Qg4 Ng6 (5...ab5 6.Nf3 Ng6 7.Bb5 c6 8.Bd3 Qb6 9.Bc3 Ra2 10.0-0 Ra1 11.Ba1 Qa5) 6.Nf3 ab5 7.Bb5 c6 8.Bd3 Qb6 9.Bc3 Ra2 10.0-0 Ra1 11.Ba1 Qa5; A5) 5.Nf3 f6 6.d4 ed4 7.Bd4 ab5 8.Bb5 Nbc6 9.0-0 Nd4 10.Qd4 Nc6 11.Qd1 Ra5; B) 4...f6 B1) 5.Bd3 a6 (5...h5 6.Ne2 Bb4 7.a3 Ba5 8.f4 d6 9.0-0 a6 10.c4 ab5 11.cb5 Bg4; 5...0-0 6.Qg4 a6 7.Nc3 f5 8.Qh4 b6 9.Bc4 Kh8 10.Nf3 Qe8 11.Ng5 Qg6) 6.Qh5 g6 7.Qh6 ab5 8.Qg7 Rf8 9.Nc3 Bb4 10.Qh7 f5 11.Bb5 c6; B2) 5.Qh5 g6 6.Qf3 Rf8 7.Bc4 Bb4 8.a3 d5 9.ab4 dc4 10.Na3 Qd6 11.Bc3 Be6; B3) 5.Qg4 0-0 6.Nf3 a6 7.Bc4 Kh8 8.Bd3 ab5 9.Qh4 h6 10.Bb5 c6 11.Be2 Qb6; C) 4...Nd5 C1) 5.Qg4 0-0 (5...g6 6.e4 Nf4 7.Nh3 Nh3 8.Qh3 f6 9.Bc4 Bc5 10.Qf3 d6 11.c3 a6; 5...Qf6 6.Nf3 Ne7 7.Nc3 Ng6 8.Ne4 Qe6 9.Nd6 cd6 10.Qh5 a6 11.Ng5 Qe7) 6.Nf3 Re8 7.Bc4 Nf6 8.Qg5 Qe7 9.Qf5 g6 10.Qg5 a6 11.0-0 ab5; C2) 5.e4 Nf4 (5...Nf6 6.Qe2 0-0 7.Nf3 Re8 8.Qe3 a6 9.a4 b6 10.Bc4 Bb7 11.Qb3 Re7) 6.Qf3 a6 7.Ne2 Ng6 8.Nec3 ab5 9.Bb5 Nc6 10.Bc4 0-0 11.Nb5 Bc5; C3) 5.Qh5 Nb4 (5...g6 6.Qf3 Nb6 7.a4 a5 8.ba6 Ra7 9.a5 Na8 10.Bc4 0-0 11.ab7 Bb7; 5...Nb6 6.a4 g6 7.Qf3 a5 8.ba6 Ra7 9.a5 Na8 10.Bc4 0-0 11.ab7 Bb7; 5...Qe7 6.Nf3 g6 7.Qh6 f6 8.Bc4 Nb6 9.Bb3 Bc5 10.Nc3 c6 11.bc6 Nc6) 6.Bc4 g6 7.Qf3 Qe7 8.Bb3 c6 9.a3 Nd5 10.Bd5 cd5 11.Nc3 d4; D) 4...0-0 D1) 5.Nf3 Ng6 (5...a6 6.ba6 Nec6 7.ab7 Bb7 8.Nc3 Re8 9.e4 Bc5 10.Bc4 Na5 11.Be2 d5) 6.Bd3 Re8 7.Nc3 a6 8.Bg6 fg6 9.Qe2 Bf8 10.Qc4 Kh8 11.h4 c6; D2) 5.Qh5 a6 (5...Ng6 6.Bd3 a6 7.ba6 Na6 8.Be5 Be5 9.Bg6 fg6 10.Qe5 Nb4 11.Kd1 Rf2; 5...f6 6.Bd3 g6 7.Qh4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 b6 11.Bc4 Kg7; 5...g6 6.Qh4 Nd5 7.Qd8 Rd8 8.Nf3 Re8 9.Bc4 Nb6 10.Bb3 a5 11.a4 c5) 6.Bd3 g6 7.Qh4 ab5 8.Nf3 Nec6 9.Qd8 Rd8 10.Nc3 b4 11.Nb5 b6; E) 4...Ng6 E1) 5.Qh5 a6 (5...Qe7 6.Nf3 a6 7.Nc3 ab5 8.Nd5 Qe6 9.e4 h6 10.Bb5 Ra5 11.Bd3 b5; 5...Qh4 6.Qh4 Nh4 7.Nc3 b6 8.Ne4 Bb7 9.Nd6 cd6 10.f3 a6 11.d4 f6; 5...0-0 6.Bd3 a6 7.ba6 Na6 8.Be5 Be5 9.Bg6 fg6 10.Qe5 Nb4 11.Kd1 Rf2) 6.Nf3 ab5 7.Bb5 Ra5 8.Bd3 Bb4 9.Qg4 Nc6 10.Bf5 Qf6 11.a3 Nge7; E2) 5.Bd3 Qg5 6.Be4 f5 7.Nh3 Qf6 8.Bd3 Bc5 9.0-0 d6 10.f4 Ne7 11.Qh5 g6.

4.e4 A) 4...0-0 A1) 5.Qh5 Ng6 (5...a6 6.Nf3 ab5 7.Bb5 Nec6 8.0-0 Qf6 9.Nc3 Nb4 10.Rfc1 c6 11.Be2 Bc7) 6.Nf3 Qe7 7.Bc4 Nf4 8.Qg4 c6 9.g3 Ng6 10.Qh5 cb5 11.Ng5 h6; A2) 5.Nf3 Ng6 (5...Re8 6.Bc4 Ng6 7.0-0 a6 8.ba6 Na6 9.d4 ed4 10.Qd4 Ne5 11.Nbd2 Qf6) 6.Bc4 a6 7.a4 Qf6 8.d4 Bb4 9.Bc3 Qe7 10.Qd2 Bc3 11.Nc3 ab5; B) 4...a6 B1) 5.d4 Ng6 6.Nf3 ed4 7.Qd4 f6 8.Qa4 Nf4 9.Nbd2 Qe7 10.Nd4 Bb4 11.c3 Bc5; B2) 5.Qg4 Ng6 6.Qg3 ab5 7.Bb5 Qh4 8.Qh4 Nh4 9.g3 Ng6 10.h4 Ra5 11.Nc3 Bb4; B3) 5.ba6 ba6 (5...Na6 6.Bc4 0-0 7.Nf3 Nc6 8.0-0 Re8 9.Ne1 Qh4 10.Qf3 Re7 11.Nc3 Nd4) 6.d4 Nbc6 7.d5 Rb8 8.Bc3 Na7 9.Bc4 Nb5 10.Bb5 Rb5 11.Nf3 f6; B4) 5.Nf3 Ng6 6.a4 0-0 7.Bc4 Re8 8.0-0 Bc5 9.Re1 Qf6 10.Nc3 c6 11.Rf1 d6; C) 4...f6 5.Qh5 g6 (5...Ng6 6.Bc4 a6 7.Nf3 ab5 8.Nh4 Ke7 9.Nf5 Kf8 10.Bb5 Bc5 11.Bc4 Nc6) 6.Qh4 Bc5 7.Qf6 Rf8 8.Qe5 Bf2 9.Ke2 Bh4 10.Nc3 d6 11.Qg7 Bf6; D) 4...b6 5.d4 (5.Nf3 Bb7 6.Ne5 Be5 7.Be5 f6 8.Bf4 Be4 9.Nc3 Bf5 10.Bc4 a6 11.Qh5 Bg6; 5.Bc4 a6 6.a4 Bb7 7.Qg4 Ng6 8.Nf3 Qf6 9.Nc3 Nf4 10.0-0 0-0 11.Rfb1 Re8) 5...ed4 6.Bd4 a6 7.Bg7 Rg8 8.Bf6 Bb7 9.Qf3 ab5 10.Bb5 Nbc6 11.Nc3 Ra3; E) 4...Ng6= E1) 5.Qh5 Qf6 (5...a6 6.Nf3 Nf4 7.Qg4 Qf6 8.d4 h5 9.Qg3 h4 10.de5 Be5 11.Be5 Qe5; 5...Nf4 6.Qf3 a6 7.Ne2 Ng6 8.Nec3 ab5 9.Bb5 Nc6 10.Bc4 0-0 11.Nb5 Bc5) 6.Nc3 Bc5 7.Nf3 d6 8.Nd5 Qd8 9.Bc4 c6 10.Ne3 cb5 11.Bb5 Bd7; E2) 5.Nf3 0-0 (5...a6 6.a4 0-0 7.Bc4 Re8 8.0-0 Bc5 9.Re1 d6 10.d4 ed4 11.Bd4 Nd7) 6.Bc4 a6 7.a4 Re8 8.0-0 Bc5 9.Re1 d6 10.d4 ed4 11.Bd4 Bd4.

4.Nf3 e4 5.Ng5+= (5.Bg7 Rg8 6.Ng5 Rg7 7.Ne4 Nf5–+ 8.Nd6 Nd6 9.Nc3 b6 10.g3 Bb7 11.f3 a6) 5...0-0 (5...e3 6.Bg7 Rg8 7.Bf6+= Be5 8.Be5 Rg5 9.f4 Rh5 10.Nc3 d6 11.Ne4 Nd5; 5...f5 6.e3 Ng6 7.Qh5 Qe7 8.Bc4 Be5 9.Be5 Qe5 10.Nc3 d5 11.Bd5 Qf6; 5...Ng6 6.Ne4 Bf8 7.Ng3 d5 8.e3 a6 9.Bd3 ab5 10.Bb5 Bd7 11.Bd7 Nd7; 5...Nf5 6.Ne4 Be7 7.Ng3 Bf6 8.Bf6 Qf6 9.Nc3 Ng3 10.hg3 a6 11.e3 ab5) 6.e3+/- Nf5 (6...Bb4!? 7.a3 Ba5+/- 8.Qh5 h6 9.Ne4 d5 10.Nf6 Kh8 11.Nd7 Kg8) 7.Qh5 h6? (better is 7...Nh6+/- 8.Ne4 Be7 9.Qe5 f6 10.Bc4 Kh8 11.Qd4 Nf5) 8.Nf7+- (8.Ne4?! g6 9.Qf3 Be7+-) 8...Rf7 9.Bc4 Qg5 (9...Qe8 10.Qf5 a6+-) 10.Qf7 Kh8 (10...Kh7 11.Qg8 Kg6 12.Bf7) 11.Qg8 1–0. pierre – terenzano, internet, 2010.

4.Nf3 f6!?= A) 5.e3 a6 (5...Bb4 6.c3 Ba5 7.Qa4 c5 8.Qg4 g6 9.Qh4 Qb6 10.e4 h5 11.Qg3 g5) 6.d4 ed4 7.Bd4 ab5 8.Bb5 Nbc6 9.0-0 Nd4 10.Nd4 0-0 11.Bd3 Be5; B) 5.e4 Bc5 6.Bc4 c6 7.d4 cb5 8.Bd3 ed4 9.Bd4 Qb6 10.Bc5 Qc5 11.0-0 Nbc6.

4.Nc3 0-0 5.e3 e4 6.Bc4 a6 7.Nd5 Nd5 8.Bd5 ab5 9.Qg4.

4.c4 0-0 5.Nc3 a5 (5...b6 6.e4=) 6.a4 (6.Nf3!?+=) 6...b6 7.e4 (7.Qc2 Bb7=) 7...Bb7 (7...Bb4 8.Nf3+=) 8.Bd3 Bc5 (8...Bb4 9.Nf3=) 9.Nf3= d6 10.0-0 Nbd7 11.Nd5 Nd5 12.cd5 (worse is 12.ed5 f5 13.Be2 e4+=) 12...f6 (12...Re8 13.Qe2=) 13.Bc4 (13.h3 Re8+=) 13...Re8 (13...f5 14.d4 ed4 15.Nd4= (15.Bd4? fe4 16.Ne1 Qg5–+)) 14.h3 (14.Qc2 Qe7+=) 14...Nf8 (14...f5 15.ef5 e4 16.Nh2+=) 15.d4+= ed4 16.Nd4 (16.Re1!?+=) 16...Re4= 17.Nc6 Bc6 (better is 17...Qd7!? 18.Bd3 Ree8=) 18.dc6+/- Rc4 19.Qd5 Kh8 20.Qc4 d5 21.Qd3 d4? (better is 21...Qd6+/-) 22.Rad1+- Ne6 23.Qf5 Qd6 24.Rfe1 Ng5? (better is 24...Nf8 25.Re4 d3+-) 25.Qd7 Qd7 (25...Qf8+-) 26.cd7 (26.cd7 Rf8 27.Re8+-) 1–0. marinscrofan (1740) – guides (1915), gameknot.com, 2014.

4.c4 0-0 5.e3 =+.

4.c4 c6 5.Nc3 Bc7 6.d4 0-0 7.de5 Ng4 8.e3 Ne5 9.f4 Ng6 10.Nf3 cb5 11.cb5+= b6?? 12.Bd3?? Bb7+/- 13.Bg6 fg6 14.Nd5+- Bd5?? 15.Qd5 Rf7 16.Qa8 Re7 17.Qd5 Kh8 18.0-0 Re3 19.Ng5 Qe7 20.Nf7 Kg8 21.Nh6 Kf8 22.Qg8# 1–0. marcosramos (2360) – beaumont (2100), net–chess.com, 2007.

4.e3 0-0 5.Nc3 c6 6.Nf3 e4 7.Ng5 Nd5 (better is 7...Be5!?=) 8.Qg4 cb5?? (better is 8...h6 9.Nh7! f5+/-) 9.Nce4 Be7 (9...Ba3 10.Ba3 d6+-) 10.Ne6!! (10.Bb5 g6 11.Qh4 h5+/-) 10...de6 (10...de6 11.Qg7 Mate attack; 10...fe6 11.Qg7 Mate attack) 11.Qg7 1–0. pierre – llav, internet, 2011.

4.e3= 0-0 5.Nc3 e4 6.Bc4 c6 7.Nge2 a6 8.a4 Qc7 9.Ng3.

4.e3 a6 =.

4.e3 Bc5 5.c4 a6 6.a4 d5 7.Na3 c6 8.d4 ed4–/+ 9.ed4?? Bd6 10.Nf3 Nbd7 11.Bd3 Ng4 12.0-0 +=. chessleon – dsturgill (1725), net–chess.com, 2006.

4.e3= e4 5.Bd4 0-0 6.Nc3 Re8 7.Nh3 Be5 8.Be5 Re5 9.d4.

4.Nf3 e4 5.Nd4 0-0 6.e3 Be5 7.Nc3 a6 8.a4 c5 9.Nb3.

4.Be5 Nc6?? 5.Bg7+- f6 6.e3 Qe7 7.Bh8 Qe5 8.Nc3 d6 9.Nf3 Qe7 10.Nd5 Qf7 11.Bf6! Nf6 12.Nf6 Qf6 13.Be2 Be6 14.0-0 0-0-0 15.d4 h5 16.d5 Bc3 17.de6 Ba1 18.Qa1 Qe6 19.Nd4 Nd4 20.Qd4 Qf5 21.Bd3 Qa5 22.Qb2 h4 23.Rb1 b6 24.a3 Qg5 25.Qb5 Qg7 26.a4 h3 27.Bf5 Kb8 28.Bh3 a5 29.Qc6 Qg6 30.e4 Re8 31.Bf5 Qg5 32.Qe8 Kb7 33.Bc8 Ka7 34.Qc6 (34…Qg2 35.Kg2 b5 36.Qb7#) 1–0. Trkn – TJ, itsyourturn.com, 2000.

4.Be5 d6?? 5.Bg7+- f6 6.e3 Nc6 7.Nf3 Bg4 8.Be2 Qe7 9.Bh8 0-0-0 10.0-0 Nh6 11.Bf6! Qf6 12.d4 Qg7 13.Nbd2 Bh3 14.Nh4 Nf5 15.Bg4?? Bg4=+ 16.Nf5 Bf5 17.f3 Bh3 18.Rf2=+ Re8 19.Nf1 Rf8 20.Ng3 Bd7 21.Qa4 a6 22.d5?? Qa1–+ 23.Rf1 Qc3 24.dc6 Bc6 25.Qb3 Ba5 26.Ne2 Qg7 27.Nd4 Bd7 28.Rb1 b6 29.a4 c5 30.Ne2 Rf3 31.Nf4 Bc6 32.Rd1 Rf4! 33.Qb4 Qg2# 0–1. Trkn – Superfish, itsyourturn.com, 2000.

4.Be5 Qe7 5.Bg7 Nf6 6.Bh8 Ng4 (6...Qe5 7.Nc3! Bc3 8.Nf3 (8.dc3?! Qc3 9.Qd2 Qa1 10.Qd1 Qd1 11.Kd1 Ne4=) 8...Bd2 9.Nd2+-) 7.Bb2 Nc6 8.e3 Nf2 (8...d6 9.a3 Ba5 10.Nc3+-) 9.Kf2 b6 (9...Ne5 10.Be5 Qe5 11.d4+-) 10.Nf3 Bb7 11.Be2 0-0-0 12.Nc3 f5 13.Nd5 Qf8 14.Nb4 Nb4 15.d4 (15.Qa4 Nc6+-) 15...f4 16.ef4 Qf4 17.a3 Nc6 (17...Na6 18.Qd2 Qd6 19.Qc2+-) 18.d5 Ne7 19.Qd4 Qd6 (19...Qf8 20.Qg7+-) 20.Qf6 Qc5 (20...Qf6 21.Bf6 Re8 22.Bd3+-) 21.Bd4 Qa5 (21...Qd6 22.Bd3 Ng6 23.Qd6 cd6 24.h4+-) 22.Qe7 b5 23.Rab1 Qa6 24.Rb5 Qg6 25.Rb7! Rg8 (25...Kb7 26.Qd8 Deflection (26.Qd8 Overloading)) 26.Rc7! Kc7 27.Be5 (27.Qc5 Kb7 28.d6 Qg2 29.Ke1 Qe2 30.Ke2 Rg2 31.Kd3 Rd2 32.Nd2 a5 33.Rb1 Ka6 34.Qb6) 27...Kc8 28.Qc5 Kd8 29.g3 Qf7 30.Rb1 d6 (30...Qf3 31.Bf3 Ke8 32.Bh5 Rg6 33.Rb8 Kf7 34.Rf8) 31.Qd6 Qd7 32.Rb8 1–0. Dos Anjos,D Ferreira (1605) – Buiar,M E Beral (1800), Paranaense De Xadrez Feminino – Pirai d, 2017.

4.Be5 Ne7 5.Qc2 0-0 6.e3 d6 7.Bb2 Bf5= 8.Bd3 Bg6 9.Bg6 fg6 10.Nf3+= d5 11.0-0 Bd6?? 12.Ng5?? Nf5 13.Ne6 Qg5?? 14.Ng5+- Re8 15.cd5 Be7 16.Ne6 Bd6 17.Nc7 Bc7 18.Qc7 g5 19.g4 Ne7 20.Qb7 Kf8 21.Qa8 Rd8 22.Qa7 Ke8 23.Bg7 Kf7 24.Nc3 Kg7 25.Qe7 Kg6 26.Ne4 (26…h5 27.gh5 Kh6 28.Qg5 Kh7 29.Nf6 Kh8 30.Qh6#) 1–0. Trkn – E. A. Morris, itsyourturn.com, 2000.

4.Be5 f6 5.Bb2 Nc6 6.Nf3 d6 7.e3 Bg4 8.Be2 Qd7 9.0-0 Nge7 10.Nc3 0-0-0 11.d4 Kb8 12.a3 Bc3 13.Bc3 h5 14.d5 Ne5 15.Ne5 fe5 16.f3 Bf5 17.Qb3 g5 (17...c6!?+/-) 18.c5! dc5 19.e4 (19.Be5 Rhe8 20.e4 Nd5+-) 19...Bg6 (better is 19...Nd5 20.Rad1 Be4 21.fe4 Nc3 22.Rd7 Ne2 23.Kf2 Rd7 24.Ke2 Rd4+-) 20.Be5 Rhf8 (20...Qe8 21.Rac1 Rh7 22.Rc5 Nc8+-) 21.Rab1 b6 22.Bb5 (better is 22.Qb6! ab6 23.Rb6 Ka8 24.Ra6 Kb7 25.Rb1 Qb5 26.Bb5+-) 22...Qc8 23.a4 (23.Rfc1 Ka8+-) 23...g4 (23...Nd5!? 24.ed5 Bb1 25.Rb1 Qf5+-) 24.a5 gf3 25.ab6 ab6 26.Qa4 (26.Bd7 f2 27.Rf2 Qa6+-) 26...Qb7 27.gf3 Rg8 28.Kf2 Nd5?? (better is 28...Be8+-) 29.Bc6 (29.ed5 Bb1 30.Bc6 Bc2 31.Qc2 Rd5 32.Bb7 Kb7 33.Bc7 Rgg5+-) 29...Be8 30.ed5 (30.Bd5?! Ba4 31.Bb7 Kb7=) 30...Bc6 31.dc6 Qa7 (31...Rd2 32.Ke3 Rd4+-) 32.Qa7 Ka7 33.Bc7 (33.Ra1 Kb8 34.Rfb1 Rg2 35.Kg2 Rg8 36.Kh1 Rg1 37.Rg1 b5 38.Rg8) 33...Rd2 34.Ke3 Ra2 35.Ra1 Ra5 (35...Rgg2 36.Rfb1 Rge2 37.Kf4 b5+-) 36.Rfb1 1–0. mr5reasons1 (1695) – azamondeps3 (1695), gameknot.com, 2013.

4.Be5 f6 5.Bb2 d5 6.e3 (6.Qb3 Bd6 7.cd5 Nd7+=) 6...Bf5 (6...Be6!?=) 7.Qb3+= Bb1 8.Qb4 Bg6 9.Qb7 Nd7 10.Ba3 (worse is 10.cd5 Rb8 11.Qa7 Rb2+=; 10.Qd5?! Ne7 11.Qa5 Nc6+-) 10...dc4 11.Bc4 Nb6? (11...Rb8!? 12.Qa6 c5+-) 12.Bb5 (better is 12.Qc6 Qd7 13.Bb5 Qc6 14.Bc6 Kf7 15.Ba8 Na8+-) 12...Nd7? (12...Kf7 13.Rc1 Rc8+-) 13.Qd5 Rb8 14.Qe6 Qe7 (14...Ne7 15.Be7 Qe7 16.Bd7 Kd8 17.Qe7 Ke7+-) 15.Bd7 (15.Be7 Ne7 16.Qd7 Kf8+-) 15...Kd8 16.Be7 (16.Be7 Ne7 17.Ba4+-) 1–0. Sixty4 – Superyetkin, playchess.de, 2005.

4.Be5 f6 5.Bb2 Ne7 6.a3 Ba5 7.e3 =.

4.Be5 Nf6 5.Bb2 b6 6.e3 Bb7 7.Nf3 Nc6 (7...0-0 8.Be2=) 8.Be2 0-0 9.0-0 Qe7 10.d4 d5 11.a3 Bd6 12.Nc3 dc4 13.Bc4 Na5 14.Be2 Rad8 15.Nb5 h6 (15...Ng4 A) worse 16.Na7 Bf3 17.Bf3 Qh4-/+ (17...Bh2 18.Kh1 Nf2 19.Rf2=+; 17...Nh2?! 18.Re1=); B) 16.Nd6?! Qd6 17.g3 c5=; C) 16.h3 Bf3 C1) worse 17.gf3 Nh2-/+; C2) 17.Nd6? Ne3 (17...Qd6?! 18.hg4 Be2 19.Qe2=+) 18.Nf5 C21) 18...Nd1? 19.Ne7 Kh8 20.Bd1 (20.Bf3 Nb2 21.Rac1 Rd7=+) 20...Bd1 21.Rad1+-; C22) 18...Nf5 19.Bf3 Nc4-+; C3) 17.Bf3=) 16.Nd6 (worse 16.Na7 c6-/+) 16...Qd6 17.Bc3 Nd5 (better 17...Ng4!? 18.g3 Qd5+=) 18.Ba5+- ba5 19.Qd2 a4 20.Rfb1 Nb6 21.Qa5 Be4 22.Rb5 a6 (22...f5 23.Nd2+- (23.Qa7?? Ra8 24.Qa8 Ra8-+)) 23.Rc5 (worse 23.Qa6 Ra8 24.Rb6 cb6=+ (worse 24...Ra6 25.Ra6 Qd7 26.Ne5+-)) 23...Bb7 (23...f5 24.Rac1+- (24.Ba6?! Ra8+=)) 24.Ne5 (24.Ba6?! Ra8 25.Bb7 Ra5 26.Ra5 Rb8+=) 24...Rc8 25.Rac1 (25.Ba6?! Ra8 26.Bb7 Ra5 27.Ra5 Qe6+-) 25...Rfe8 (25...f6!? 26.Nc4 Qe6+-) 26.Bg4 (26.Ba6?! Ra8 27.Bb7 Ra5 28.Ra5 Qa3=) 26...f6 (26...Rb8 27.Rc7 Nd5 28.R7c5+- (28.Nf7?! Qa3 29.Ne5 Nc7 30.Qc7 Bd5=; 28.Rf7?! Qa3 29.Rd1 Qb3+-)) 27.Bc8 Rc8 28.Nc4 (28.Nc4 Qe6 29.Nd2+-) 1-0. petrobbo (2005) - TheShrink (2055), ChessWorld.net, 2010.

4.Be5 Nf6 5.Nc3 Bc3 6.Bc3= 0-0 7.Qc2 d6 8.Nf3 Nc6 9.Rb1 b6 10.e3 g6 11.Be2+/- Bf5 12.d3 Ne5 13.Ne5+- de5 14.e4 Bg4 15.f3 Be6 16.Be5 Nh5 17.0-0+- Qg5 18.f4 Qh4 19.f5 Bd7 20.c5 f6? 21.Bc7 g5 22.c6 Be8 23.g3 Qh3 24.Bd6 Rf7 25.c7 Rc8 26.d4 Kg7 27.e5 Ng3 28.ef6 Kh6 29.Bg3 Bd7 30.Qe4 Re8 31.Qe8! Be8 32.c8Q Bd7 33.Qb7 (33.Qb7 a6 34.Qd5+-) 1–0. pierre – retry, internet, 2008.

4.Be5 Nf6 5.e3 Nc6 6.Bb2 0-0 7.Nf3 Re8 8.Be2 d6 9.0-0 a5 10.d4+= Bg4? 11.a3+- Bh5 12.ab4 Nb4 13.Bc3 Na6 14.Ra5 b6 15.Ra1 Qc8 16.Qa4 c5 17.Nbd2 Bg6 18.Qb5 Nc7 19.Qb6 Rd8 20.d5 Rb8 21.Qc6 Bf5 22.Bf6 gf6 23.Ra7 Rd7 24.Nh4 Re7 25.Qd6 Kf8 26.Qf6 Ra8 27.Qh8# 1–0. Kleinke,Uwe – Stier,KD, corr DDR–I–744, 1979.

4.Be5 Nf6 5.e3 Nc6 6.Bc3 0-0 7.Nf3 Bc3 8.Nc3 d5 9.d4 Be6 10.cd5 Nd5 11.Ne4 h6 12.Be2 Bf5 13.Ng3 Nc3? 14.Qb3+- Ne2 15.Nf5 Qf6 16.Nh6 Qh6+/- 17.Ke2 b6 18.Rac1 Rad8 19.Rhd1 Rfe8 20.Qb5 Rd6 21.Ne5?? Ree6? 22.Nc6+/- Rc6 23.Rc6 Rc6 24.h3 Qg6 25.g3 Rc2 26.Rd2 Rc1 27.Qd7 Qh5 28.f3 Qg6 29.Kf2 Rc2 30.Qd8 Kh7 31.Qh4 Kg8 32.Ke2 Qc6 33.Qe4 Qc4 34.Qd3 Rd2 35.Kd2 Qa2 36.Qc2? Qa5 37.Kd1 Qa1 38.Qc1?? Qc1–+ 39.Kc1 Kf8 40.Kb2 Ke7 41.Kb3 Kd6 42.Kb4 Kd5 43.g4 a5 44.Kb3 b5 45.h4 c5 46.dc5 Kc5 47.h5 a4 48.Kb2 b4?? 49.g5+- Kc4 50.h6 a3 51.Ka2 b3 52.Ka3 Kc3 53.hg7 b2 54.g8Q b1Q 55.Qg7 Kd2 56.Qd4 Ke2 57.f4 Qf5 58.Kb4 Kf3 59.Kc4 Kg4 60.Qd5 Qg6 61.Kd4 Qb6 62.Ke4 Qb1 63.Ke5 Qf5 64.Kd6 Qg6 65.Ke7 Qb6 66.Kf7 Qe3 67.Qe6 (67.Qe6 Kf4 68.Qe3 Ke3 69.g6+-) 1–0. katchum (2115) – smeserkhani (2000), net–chess.com, 2003.

4.Be5 Nf6 5.e3 d6 6.a3 de5 7.ab4=+ e4 8.Nc3 Nc6 9.Nge2 Nb4 10.Ng3 Nd3–/+ 11.Bd3 ed3 12.0-0 0-0 13.Nce4 Ne4 14.Ne4 f5 15.Ng3 c5 16.f4 Qf6 17.Nh5? Qf7–+ 18.Qf3 Be6 19.Ra4 Bc4 20.Ng3 b5 21.Ra5 Rab8 22.Rfa1 Bd5 23.e4? fe4 24.Ne4 Qb7 25.Re1 Qb6 26.Rea1 Rf7 27.Qd3?? c4 28.Qe3 Qe3 29.de3 Be4 0–1. gtate (1915) – condour (1785), net–chess.com, 2004.

4.Be5 Qg5 5.Nf3 (< 5.Bc7 Qf6 6.Nf3 Qa1=) 5...Bd2?? (Better is 5...Qg4 6.h3 Qg6+/-) 6.Qd2 Qd2 7.Nbd2 d6 (7...Nf6 8.Bc7 d5+-) 8.Bg7 Nc6 9.Bh8 Nb4 10.Rb1 Na2 (10...Na6 11.Nd4+-) 11.Rb2 Nc1 12.Kd1 Ne2 13.Be2 (13...Ne7 14.Re1+-) 1–0. orane (2025) – KNIGHT12, Live Game Caissa's Web, 2004.

4.Qb3 Nf6 5.e3 (5.Qg3 0-0=) 5...0-0=+ 6.Nf3 Qe7 7.Be2 e4 8.Nd4 Nc6 (8...Bb4 9.Nf5 Qc5 10.g4=) 9.a3 (9.Nf5 Qe6 10.Nd6 Qd6=) 9...Nd4=+ 10.ed4 c5 11.dc5 bc5 12.b5 Bb7 13.0-0 Qe6 (13...Be5 14.Be5 Qe5 15.Qc3=+) 14.Nc3 (14.f4 a6=) 14...Rfe8 15.Nd1 (15.Na4 a6 16.b6 Rac8=) 15...Qf5 (15...Bf4 16.Qc2=+) 16.Ne3 Qg6 17.a4 Qh6 18.g3 Qg6 19.a5 a6 (19...Be5 20.Be5 Re5 21.a6+=) 20.Rfe1 Nh5 21.Bf1 (21.Reb1 Be5+=) 21...Nf4= 22.Nd5 (22.Reb1!?=) 22...Nd5 23.cd5 ab5 24.Bb5 Reb8 25.Qc4 (25.Bd7? Bc8 26.Qa4 Bd7 (26...Rb2?! 27.Bc6 Bb7 28.Qe4-+) 27.Qd7 Rb2-+) 25...Ba6 26.Ba6 Rb2 27.Qc3 Qf6 (27...Rb4 28.Bc4=+) 28.Qf6= gf6 29.Bc4 f5 30.a6 Be5 31.Rab1 Rd2 32.Rb7 Bd4 (32...Rc2 33.Bb5=) 33.Rf1 (33.Re2 Rd1 34.Kg2 Kg7+/-) 33...d6 (better 33...Rc2 34.Bb5 d6=+) 34.a7 (better 34.Rfb1 Kg7 35.Rb8 Rd1 36.Kg2 Rb8 37.Rb8=) 34...Ra7?? (better 34...Kg7-+) 35.Ra7+- Rc2 (35...Rb2 36.Ra6 Rb4 37.Be2+-) 36.Bb5 Rb2 37.Bc6 c4 (37...c4 38.Ra4 Rc2+-). jhonores (2225) - alekin2 (2250), Rated Blitz game, lichess.org, 2020.

4.b5 a6 =.

4.d4 Bb4!? 5.Nc3 ed4 6.Qd4 Qf6-/+.

4.d4 e4 5.c5= Be7 6.Nc3 (better 6.d5 Bf6 7.Qc2 Bb2 8.Qb2=) 6...c6 (better 6...Nf6!?=) 7.Ne4+/- Nf6 8.Nf6 Bf6 9.e3 0-0 10.Nf3 d5 11.Bd3 b5 (11...a5 12.Ba3+/-) 12.0-0 Bg4 13.a4 ba4 14.Ra4 Nd7 15.h3 Bh5 16.Be2 Re8 17.b5 (17.Ra5 Qc7+-) 17...Qc7 (17...Nc5!? 18.Ra2 Ne4 19.bc6 Qc7+/-) 18.bc6 Qc6 19.Ra6 Qc7 (19...Qb7 20.Qa1 Nb8 21.Ra4+/-) 20.Nd2 (20.Rd6 Bg6+-) 20...Bg6 (20...Be2 21.Qe2 Nc5 22.Rf6+/-) 21.Qb3 (21.Rd6 Bf5+-) 21...Nb8? (21...Nc5 22.dc5 Rab8 23.Bb5 Bb2 24.Qb2 Qc5 25.Ra5=) 22.Ra2 (22.Rd6 a5+-) 22...a5? (better 22...Nc6!?+/-) 23.Qd5+- Nc6 24.Nc4 (24.Qf3 Nb4 25.Ra3 Nc2+-) 24...Red8? (24...Nb4 25.Qd6 Qd6 26.Nd6 Na2 27.Ne8 Re8+/-) 25.Nd6?? (better 25.Qf3+-) 25...Nb4+= 26.Qc4 Na2 27.Qa2 Be7 28.Ba3 Rab8 29.Bc4 Bd6 30.cd6 Qb6 (30...Qd7 31.Bc5+=) 31.Rc1 (31.Bc5 Qc6 32.Qa5+-) 31...Bb1? (31...a4+/-) 32.Bc5?? (better 32.Bf7 Kh8 33.Qc4+-) 32...Ba2= 33.Bb6 Rb6 34.Ba2 Rbd6 35.Rc5 g6 (35...Ra6!? 36.Rc7 Rf8=) 36.Ra5+/- Kg7 37.Ra7 R8d7 38.Rd7 Rd7 39.Bc4 Re7 40.Be2 h5 41.Bf3 h4 42.g3 (42.Kh2 Rc7 43.g3 hg3 44.Kg3 Kf8+=) 42...g5 (better 42...hg3!? 43.fg3 Re3-/+) 43.gh4 gh4 44.Kg2 f6 45.Bg4 Kh6 (45...Kg6 46.Be2+=) 46.Kf3 (46.d5 Kg6 47.d6 Re8+/- 46...Rg7 (46...Kg5!? 47.Bc8 f5+/-) 47.Kf4 Rg5 48.Bf5 (48.e4!? Kg6+-) 48...Kg7+/- 49.f3 Rg2 50.e4 Rg3 (50...Kf7!?+/-) 51.Bg4+- 1-0. BeepBeepImAJeep (2590) - olegolegov33 (2050), lichess.org, 2017.

4.e3 Bb4 5.Qf3 Nc6 6.Be5 Nf6 =.

4.e4 Nf6=+ 5.Qc2 (5.Nf3 Bb7=+) 5...Bb7 (5...Bb4 6.Be5 Qe7 7.Nf3=+) 6.f3 Bb4 7.Be5 d6 8.Bc3 c5 (8...Bc3 9.Nc3 c5 10.Nge2=+) 9.Bb4= cb4 10.d4 a5 (10...Nfd7 11.Bd3=) 11.Bd3+= Qe7 12.Ne2 Nc6 13.Nd2 0-0 14.0-0 Rac8 15.Rac1 Nh5 16.Rfe1 Rfe8 17.e5 de5 18.d5 Qc5 19.Kh1 Nd4 20.Bh7 Kh8 21.Nd4 Qd4 22.Re4 Qc5 23.Rh4+- Bd5? 24.Rh5 Re6 25.Be4 Kg8 26.Bd5 Rh6 27.Rh6 gh6 28.Qf5 Qc7 29.Ne4 Kf8 30.Nd6 (30…Rd8 31.Nf7+-) 1–0. Perez Donamaria,P – Lopez,M, III–F, 1973.

4.Nf3 Bb4 5.Be5 Nc6?? (better is 5...Nf6=) 6.Bg7+- d5 7.e3 Bg4 8.Nc3 (8.Bh8!? Nge7+-) 8...d4 9.Nd5 (worse is 9.Bh8 dc3 10.dc3 Bd6+-) 9...Nge7 (9...de3 10.fe3 Qd6+-) 10.Nf6 1–0. Groznov,Vladmir – Losev,Vyacheslav, RN–2010-0-00256, 2010.

4.Nf3 Nc6 5.b5 Nd4 6.e3 Ne6 7.Ne5 Be5 (7...Bb7 8.Qh5 Qe7 9.f3+=) 8.Be5 d6 (8...a6 9.d4 d6 10.Bg3+/-) 9.Qf3 Bd7 10.Bb2 f6 (10...a6 11.Bd3+/-) 11.Qh5 g6 12.Qf3 (better 12.Qh4+-) 12...Nh6?? (better 12...a6+/-) 13.Bf6+- (13.Qf6?! Qf6 14.Bf6 Rf8+-) 13...Qc8 (13...0-0 14.Bd8 Rf3 15.Bc7 Rf2 16.Kf2 Nc7+-) 14.Bh8 Nf7 15.Bf6 c6 16.Nc3 Nc5 (16...cb5 17.cb5 Rb8 18.Nd5+-) 17.d4 Ne6 (17...Nb7 18.Rc1+-) 18.bc6 (18.Qe4 d5 19.cd5 cd5 20.Nd5 Nd6+-) 18...Bc6 19.d5 Neg5 (19...Bb7 20.Qe4 Ne5 21.Nb5+-) 20.Qf4 Bd7 21.h4 (better 21.Bg5 Bf5+-) 21...Bg4 (21...Ne6 22.de6 Be6 23.Qe4+-) 22.hg5 Bh5 23.Rh5! gh5 24.Qe4 (24.Qe4 Kf8 25.Qh7+-) 1-0. karpasov (2630) - olo (2350), net-chess.com, 2022.

4.Nf3 Qe7 5.e3 Nf6 6.a3 0-0 7.Nc3 Bb7 8.Be2 a5 9.b5 Bc5 (9...e4 10.Nh4=) 10.d4 (10.0-0!?+=) 10...ed4=+ 11.ed4 Bd6 (better 11...Bf3!? 12.gf3 Bd6=+) 12.0-0+= c6 (12...Bf4 13.Re1+=) 13.Re1+/- cb5 (13...Qd8!?+/-) 14.Nb5+- Bf4 (14...Rc8 15.Bd3 Qf8 16.d5+-) 15.Bd3 (15.d5 Ba6 16.Qd4 Qe4+-) 15...Qd8+/- 16.Ne5 (16.g3 Bc7 17.d5 Na6+-) 16...d6 17.Ng4 Bg5 (17...d5 18.Qf3 Ng4 19.Qf4+/-) 18.d5+- Ne8 19.Qc2 g6 (19...h6 20.h4! h5 21.hg5 hg4 22.Qe2+-) 20.Re2 (20.Qc3 f6+-) 20...Nd7 21.Rae1 Ba6 (21...Nc5 22.Qc3 f6 23.Re8 Qe8 24.Re8 Rae8 25.f4+-) 22.h4 (22.Nd4 Qc7+-) 22...Bf6 (22...Bb5 23.cb5 (worse 23.hg5 Qg5 24.Re4 f5+-) 23...Nef6 24.hg5 Ng4 25.Qc3+/-) 23.h5 (23.Re8 Re8 24.Re8 Qe8 25.Nf6 Nf6 26.Bf6 Bb5 27.cb5 Rc8+-) 23...Ne5? (23...Bb2!? 24.Qb2 Qg5 25.hg6 fg6+/-) 24.Ne5 (24.Nd6 Ng4 25.Ne8 Bh8+-) 24...de5 25.hg6 (25.Qb3 Bb5 26.Qb5 Nd6+-) 25...hg6 (25...fg6 26.Be5 Bb5 27.cb5+/-) 26.Be5 (26.Qb3 Bb5 27.Qb5 Nd6+-) 26...Be5 (26...Bb5 27.cb5 Rc8 28.Qb3+/-) 27.Re5+- Ng7 (better 27...Bb5!? 28.cb5 Rc8+-) 28.Nd4 Bb7 29.Qb3 Rb8 30.R5e3 Qf6 31.Nb5 Ba6 32.Rf3 Qd8 33.Nd4 Bb7 34.Rh3 Qd6 (34...Qf6 35.Re4+-) 35.Qd1 (35.Nb5 Qc5+-) 35...Rfe8 36.Nb5 Re1 37.Qe1 Qf6 (37...Qc5 38.Qd2 Bc8 39.Rh4+-) 38.Re3 (38.Rf3!? Qd8+-) 38...Ba6 39.a4 (39.Na7!? Bb7+-) 39...Bb5 40.ab5 Rc8 41.Bf1 Qd4 42.Re7 a4 (better 42...Ra8!?+/-) 43.Ra7+- Nf5 44.Ra4 (44.Qb4 Ng3 45.Qe7 Rf8+-) 44...Nd6 (44...Ng3 45.Qa1 Qa1 46.Ra1 Nf1 47.Kf1 (47.Rf1?! Rc4 48.Rd1 Kf8+/-) 47...Rc4 48.Ra6+-) 45.Qe3 (better 45.Qe7 Ne4 46.Ra2+-) 45...Qh4?? (better 45...Qd1 46.Qb6 Nc4+-) 46.Qb6 Ne4 (46...Qf4 47.Qe3 Qh4 48.Qa7+-) 47.Qe3 (better 47.Qd4!? Qe7+-) 47...Nc5 48.Ra7 1-0. carlos78 (2320) - Davigator (2380), Rated Blitz game, lichess.org, 2016.

4.f4 Nc6 5.b5 Na5 6.fe5 Bc5 7.e3 Nh6 8.d4 Bb4 9.Bc3 Bc3 10.Nc3 c6 11.Bd3 d6 12.Nf3 Bg4 13.0-0 de5 14.Qa4 Bd7 15.Ne5 0-0 16.Nd7 Qd7 17.bc6 Nc6 18.Be4 Rac8 19.Bc6 Rc6 20.Nb5 Rf6 21.Rf6 gf6 22.Qa7 Qc6 23.Qc7 Qc7 24.Nc7 Rc8 25.Nd5 Rc4 26.Nb6 Rb4 27.Nd5 Ra4 28.a3 Kg7 29.Nc3 Ra8 30.a4 Nf5 31.a5 Ne3 32.a6 Nc2 33.Ra4 Ne3 34.Kf2 Ng4 35.Kg3 f5 36.Nb5 Kg6 37.a7 Kg5 38.h4 Kh5 39.Nc7 Rg8 40.a8Q Nf6 41.Qg8 Ng8 42.d5 Nf6 43.Rf4 Ne4 44.Re4 fe4 45.d6 e3 46.Kf3 f5 47.d7 f4 48.d8Q e2 49.Qg5# 1–0. Trkn – bowleet, itsyourturn.com, 2000.

5.c5 bc5 6.bc5 Bc5 7.Be5 Bb7 =.

5.c5 Bc5?? 6.bc5+- bc5 7.Be5 Nc6 8.Bb2 Rb8 9.Qc2 d6 10.a3 Bb7 11.Bb5 0-0 12.Nf3 a6 13.Bd3 h6 14.Rg1 Re8 15.g4 Ne4 16.Be4 Nd4?? 17.Bh7 Kf8 18.Nd4 Qh4 19.Nf5 Re3 20.de3 Qh2 21.Bg7 Ke8 22.Qa4 c6 23.Qe4 (23…Qe5 24.Nd6 Ke7 25.Qe5 Kd7 26.Bf5 Kc7 27.Nc4 Kd8 28.Bf6#) 1–0. Lea,Per – Lindgren,Helge, corr Norway, 1979.

5.Qf3 c6 6.a3 =.

5.Qf3 Nc6 =.

5.Nf3 e4!? 6.c5 bc5 7.bc5 Bc5 –/+ (< 7...ef3 8.Qf3 Nc6 9.Bf6 Qf6 10.Qf6 gf6 11.cd6+-).

5.Nf3 Qe7 6.a3 0-0 7.Be2 Bb7 8.0-0 a5 9.c5 bc5 10.bc5 Bf3?? 11.Bf3 Bc5? 12.Ba8 c6 13.d4 ed4 14.Bd4 Bd4 15.Qd4 d5 16.Nc3 c5 17.Qa4 Qa7 18.Bd5 Nd5 19.Nd5 Nc6 20.Rfc1 Ne5 21.Qe4 Re8 22.Qc2 Ng4 23.Qc5 Qa8 24.h3 Nh6 25.Qc6 g6 26.Nf6 Kg7 27.Ne8 (27…Qe8 28.Qe8+-) 1–0. M8IN3 – haruki, Live Game Caissa's Web, 2005.

4.b5 a6 5.Nc3 ab5 6.Nb5 Bc7 7.Nf3 Nc6 8.e4 d6 9.a3 Bb8 10.Be2 Nf6 11.d3 0-0 12.0-0 Bd7 13.h3 Nd4 14.Nbd4 cd4 15.Nh2 (15.Qb3 Bc6=) 15...Ba4 16.Qd2 Nd7 17.Qb4 Bc6 18.Rfd1 (18.f4 Bc7=) 18...Ra4 19.Qd2 Nc5 20.Qc2 Ra5 21.Rab1 (better is 21.Re1!?+=) 21...Ba4–+ 22.Qd2 Bd1 23.Bd1 b5 24.cb5 Rb5 25.a4 Ra5 (25...Qa5 26.Nf3 Qd2 27.Nd2–+) 26.Ra1 Bc7 27.Nf3 Qa8 28.Ba3 Na4 29.Bb4 Ra7 (29...Ra6!? 30.Bb3 Nc5 31.Ra6 Qa6 32.Bc4–+) 30.Ne5 Nc3 31.Bc3 (31.Ra7!? Qa7 32.Nc6 Qa1 33.Bc3 dc3 (33...Qc3?! 34.Ne7 Kh8 35.Qe2–/+) 34.Ne7 Kh8–+) 31...Ra1 32.Ba1 Qa1 33.Nc4 Ra8 34.Qe2 Ra2 35.Qf1 Ra8 36.Be2?? f6 37.g3 Qf1 38.Bf1 Rd8 39.Na3 d5–+ 40.ed5 Rd5 41.Nc4 Kf7 42.Kg2 Ke6 43.Be2 Kd7 44.f4 g5 45.fg5 fg5 46.Bf3 Rb5 47.h4 Rb3 48.Be4 gh4 49.gh4 h6 50.h5 Ke6 51.Kf3 Rb5 52.Bg6 Rg5 53.Ke4 Rg4 54.Kf3 Rg3 55.Ke4–/+ Kf6 56.Kd4 Rg6 57.hg6= Kg6 58.Ke3 Kg5 59.Kf3 h5 60.d4 h4 ½–½. Yeung,Chun Keung (1660) – Lau,Kwok_cheung (1695), HKG/C13 (HKG), 2011.

4.b5 a6 5.Nc3 Nf6 6.a4 (6.Nf3 0-0 7.e4 ab5 8.cb5 Bc7=) 6...0-0= 7.e3 e4 8.Nge2 Be7 (8...Be5!?=) 9.Nf4+- d6 10.Ncd5 (better 10.Be2!?+-) 10...Nd5= 11.Nd5 Be6 12.Ne7 (12.Qc2 Bd5 13.cd5 Bf6=) 12...Qe7 13.Qc2 d5 14.d3 Nd7 (14...ab5 15.cb5 f5 16.Be2=) 15.de4+= de4 16.Qe4 Rab8 (16...ab5!? 17.cb5 Nf6+=) 17.Bd3 g6 (17...f5 18.Qf4 Rbd8 19.Qc7+-) 18.h4 Nf6? (18...Qd6 19.Be2+-) 19.Qf3 White prepares h5 (19.Qe5 ab5 20.ab5 Rbd8+-) 19...Nd7 20.h5 h6?? (better 20...Qg5 21.hg6 fg6+-) 21.hg6 fg6 22.Qg3 (better 22.Qe4!? Rf5 23.Rh6 Nf8+-) 22...Qg5 23.Qg5 hg5 24.Bg6 Nf6 25.Bd3 (better 25.Rd1 Kg7 26.Bc2 Kf7+-) 25...Kf7 26.f3 Rbd8 27.Ke2 g4 28.b6 (28.Be5 Ke7+-) 28...Rd6 29.a5?? (better 29.Rh6 Nd7 30.a5+-) 29...Rfd8+= 30.Rad1 Ke7? (30...Rd3 31.Rd3 Bc4 32.Rhd1+=) 31.Be5?? (31.Rh6 Bf7+-) 31...R6d7?? (better 31...gf3 32.gf3 Rd3 33.Rd3 Bc4+-) 32.Bc7 (32.Rh6 gf3 33.gf3 Ng4 34.Rh7 Kf8 35.Rd7 Rd7+-) 32...Rg8 33.e4 Bf7 34.f4 (better 34.Ke3 gf3 35.gf3+-) 34...Nh5 (34...g3 35.e5 Bh5 36.Rh5 Nh5 37.Bd6 Kd8+-) 35.Ke3 Ng3 (35...Rd4 36.f5 Rh8 37.Be5+-) 36.Rh7 (better 36.Rh6 Rd4+-) 36...Nh5 (36...Re8 37.Rh6 Kf8 38.Rh8 Bg8+-) 37.e5 Ng7 (37...Rd3 38.Rd3 Ng7 39.Bd8 Rd8 40.Rd8 Kd8 41.Rg7+-) 38.Bd6 Ke6 (38...Ke8+-) 39.Rh6 Bg6 40.Rg6 (40.Bg6 Rh8 41.Bf5 Kf7 42.e6 Ne6 43.Be6 Kg7 44.Rh8 Rd6 45.Rg8 Kf6 46.Rd6 g3 47.Bd5 Ke7 48.Rh6 Kd7 49.Rh7 Kd6 50.Rd8) 40...Kf7 41.Rf6 Ke8 42.Bg6 Kd8 43.e6 Ne6 44.Re6 Kc8 45.Re8 Re8 46.Be8 Rd8 (46...Rh7 47.Bg6 Rd7 48.Bf5 Kd8 49.Bc7 Ke8 50.Rd7 Kf8 51.Bd6 Ke8 52.Rh7 g3 53.Rb7 Kd8 54.Rb8) 47.Bh5 Rg8 (47...Rd7 48.Bg4 Kd8 49.Bc7 Ke7 50.Rd7 Ke8 51.Be5 Kf8 52.Bh5 Kg8 53.Bf6 Kf8 54.Rd8) 48.Bc5 (48.Bc7 g3 49.Bg4 Rg4 50.Rd8) 48...Rh8 (48...Rg7 49.Bd4 Re7 50.Be5 Re6 51.Ke4 g3 52.Kf3 Rg6 53.Bc7 Rg8 54.Bg4 Rg4 55.Rd8) 49.Bg4 Kb8 50.Bd6 (50.Bd4 Re8 51.Be5 Ka8 52.Rd7 Rc8 53.Bf3 Rb8 54.Bb8 Kb8 55.Rd8) 50...Ka8 51.c5 (51.Bf3 Rd8 52.Rh1 Re8 53.Be5 Rd8 54.Bb7 Kb7 55.Rh7 Rd7 56.Rd7 Kc8 57.Rc7 Kd8 58.b7 Ke8 59.b8Q) 51...Rd8 (51...Rh3 52.Ke4 Re3 53.Kf5 Re5 54.Kf6 Re1 55.c6 Rd1 56.cb7 Kb7 57.Bf3 Kc8 58.b7 Kd7 59.Bd1 Kc6 60.b8Q Kd5 61.Qb4 Kc6 62.Bg4 Kd5 63.Bf3) 52.Rh1 (52.Rh1 Rg8 53.Be5 Re8 54.Rh7 Rd8 55.c6 Rb8 56.f5 bc6 57.Ra7) 1–0. janpor (1620) – kapvel, gameknot.com, 2015.

4.b5 Nf6 5.e3 b6 (better is 5...0-0+=) 6.Qf3+/- e4 7.Bf6 gf6?? (better is 7...ef3 8.Bd8 Kd8 9.Nf3 a6+/-) 8.Qe4+- Be5 9.Qa8 Ba1 10.Qb8 0-0 11.Qa7 f5 12.Ne2 Qf6 13.Nbc3 d6 14.Qb6 Rd8 (14...f4+-) 15.Nd5 Qe5 16.Qd8 Kg7 17.Nef4 Be6 18.Nh5 Kh6 19.h4 f4 20.Ndf6 Kg6 21.Qg8 Kf5 (21...Kh6 22.Qh7) 22.Qh7 1–0. pcmvr (2845) – dweigel (1940), net–chess.com, 2011.

4.a3 b6 5.e3 Nf6 6.Nf3 e4 7.Nd4 Be5 8.Qb3 0-0 9.d3 d5 10.cd5 cd5 11.de4 Ne4 12.Be2 Bb7 13.0-0 Re8 14.Nf3 Bb2 15.Qb2 Nd7 16.Nbd2 Ndf6 17.Rfd1 Nf2 (better is 17...Qe7!? 18.Nd4 a6+=) 18.Kf2+/- Ng4 19.Kg1 Ne3 20.Re1 b5? (better is 20...Rc8!? 21.Bd3 Qc7+/-) 21.Bb5+- Qb6? (21...Re7+-) 22.Re3 (better is 22.Be8 Re8 23.Nd4+-) 22...Re3+= 23.Qd4 Qd4 24.Nd4 a6 25.Kf2 Re7 26.Ba4 Rc8 27.Re1 Re1 28.Ke1 Rc1 29.Kf2 Rd1?? (better is 29...Ra1 30.Bb3 Kf8+/-) 30.Bd1+- 1–0. Fournier,Frederic (1840) – kikopacho (1620), Active, 2008.

4.a3 Nf6 5.e3 0-0 6.Qc2 a5 7.c5 Bc7 8.Nf3 Re8 9.d4 ed4 10.Bd4= ab4 11.ab4 Ra1 12.Ba1 d5 13.Bd3 Nbd7 14.0-0+= Ne5 15.Ne5 Be5 16.Nd2 Bg4 17.f3 Bh5 18.Bc3 Qc7 19.Be5 Qe5 20.Re1 Ra8 21.f4 Qb8 22.h3 d4 23.g3 g5 24.e4 Bg6 25.e5 Nd5 26.Bg6 hg6 27.Qe4 Ra3 28.Nf1 gf4= 29.e6 Qe8=+ 30.Qd4 fe6 31.Qb2 Ra4–/+ 32.Re4 fg3 33.Ng3 Qe7 34.Rg4 Qf6 35.Qb1?? Ra1–+ (36.Rg6 Qg6 37.Qa1 Qg3 38.Kh1 Qh3 39.Kg1 Qg4 40.Kh2 Qb4 41.Qg1 Kf7 42.Qf2 Qf4 43.Kh1 b5–+) 0–1. Nemeth,Laszlo – Somodi,Balazs, Gongyos Matra op, 2002.

4.a4 Bb4 5.Be5 Nf6 6.Bc3 =+.

4.a4 Qe7 5.b5 Nf6 6.Nf3 0-0 7.e3 Re8 8.Be2 e4 9.Nd4 Be5 10.0-0? (better 10.Nf5 Qc5 11.Bd4 Bd4 12.Nd4=+) 10...c5-+ 11.Nf5 Qe6 12.Ng7 Kg7 13.Nc3 d5 14.cd5 Nd5 15.Bc4 (better 15.Nd5 Qd5 16.Be5 Qe5 17.f3-+) 15...Qh6 16.f4 Nc3 (16...ef3!? 17.g3 Ne3 18.de3 Qe3 19.Kh1 Bc3 20.Ra3 Bb2 21.Re3 Re3 22.Qd8=) 17.Qb3 (17.dc3 Bf6-+) 17...Ne2! 18.Be2 Bb2 19.Qb2 Qf6 20.Qc2 Nd7 21.a5 b6 22.a6 Nf8 23.f5 Bd7 (23...Qg5 24.f6 Kg8 25.Bc4-+) 24.Rab1 (24.Ra4 Qe5 (worse 24...Bf5 25.g4+=) 25.g4 h5-/+) 24...Rad8 (24...Re5 25.Rf4-+) 25.Rf4 Bc8 (25...Bf5?! 26.g4=) 26.Rbf1 Nd7 (26...Qe5 27.Rg4 Kh8 28.Qc4-+) 27.Bc4 (better 27.Re4!? Re4 28.Qe4-/+) 27...Ne5-+ 28.Re4 (28.Qc3 h5 29.Re4 Nc4 30.Qc4 Re4 31.Qe4 Rd2 32.Qf4-+) 28...Nc4?? (better 28...Bf5 29.Qc3 Be4 30.Rf6 Kf6-+) 29.Rc4 Kh8 30.d4 (30.e4 Rd4 31.d3 Red8-+) 30...Bd7-+ 31.Qb3 cd4 32.Rd4 Bc8 (better 32...Bf5!? 33.Qc3 Rc8-+) 33.Rd8-/+ Rd8 (33...Qd8 34.Qf7 Qd7 35.Qf6 Qg7 36.Qg7 Kg7 37.Rc1 Bf5 38.Rc7 Kg8 39.Ra7 Re3 40.Rb7+/-) 34.h3 (34.Qb4 Rd6-/+ (34...Bf5 35.e4+/-)) 34...Qe5 (34...Bf5!? 35.g4 Be6 36.Rf6 Bb3-+) 35.Qf7-/+ Qe3 36.Kh1 Qe8 (36...Qe5 37.g4-/+) 37.Qa7? (better 37.Qf6 Kg8 38.Rf3 Bf5 39.Rf5 Rd1 40.Kh2 Qb8 41.Rf4+-) 37...Bd7?? (37...Qb5 38.Rc1 Bf5-/+ (worse 38...Qf5 39.Qb8 Qd7 40.a7+=; 38...Qa6 39.Qe7 Qd3 40.Qe5 Kg8 41.Rc8 Rc8 42.Qe6 Kg7 43.Qc8=)) 38.Qb6+- Bb5 39.Qf6 Kg8 40.Rf3 Rd1 41.Kh2 Qf7?? (better 41...Rd3 42.Rd3 Bd3+-) 42.Rg3 Kf8 43.Qh8 Ke7 44.Rg7 Rd7 45.Qh7 Kf6 (45...Qg7 46.Qg7 Kd6 47.Qh6 Kc7+-) 46.Rf7 Rf7 47.Qg6 Ke7 48.Qe6 (48.a7 Bd7 49.a8Q Rh7 50.Qa3 Kd8 51.Qf8 Kc7 52.Qgd6 Kb7 53.Qfb8) 48...Kf8 49.f6 Bd7 50.Qd6 (50.a7 Be8 51.a8Q Rf6 52.Qf6 Kg8 53.Qe8 Kh7 54.Qef7) 50...Kg8+- 51.a7 Kh7 52.a8Q Bf5 (52...Be8 53.Qe4 Kh8 54.Qe8 Rf8 55.Qef8 Kh7 56.Qg7) 53.Qad5 (53.Qg3 Bg4 54.Qe4 Kh8 55.Qeg4 Rf6 56.Qg7) 53...Kg6 (53...Bg6 54.Qd8 Rf6 55.Q5g8 Kh6 56.Qf6 Kh5 57.Qgg6) 54.Qf7! Kf7 (54...Kf7 55.Qe7 Mate attack) 55.Qe7 Kg6 56.Qg7 Kh5 57.f7 Bg6 ½-½. BeepBeepImAJeep (2510) - smurf42 (2440), lichess.org, 2015.

4.a4 Qe7 5.Nf3 Bb4 6.Be5= Nf6 7.e3 0-0 8.Be2 d6 9.Bb2 Nbd7 10.0-0 Nc5 11.d4 Nce4 12.Nbd2 Bf5 13.Ne4 Ne4 14.Bd3 Bg4 15.Be2 Nc3 16.Bc3= Bc3 17.Ra2 Ba5 18.Qc2 f5 19.Bd3 Bf3=+ 20.gf3 Qg5 21.Kh1 Qh5 22.Be2 f4 23.Rg1 Rae8 24.e4 Re6 25.Rg2 Rff6 26.d5 Re5 27.dc6 bc6 28.Qb1 Bb6 29.a5 Ra5–+ 30.Ra5 Qa5 31.Bd3 g6 32.Qd1 Qc3 33.Qb1 Kg7 34.Kg1 Bd4 35.Kf1 Qd2 36.Qc2 Qc2 37.Bc2 Rf7 38.Ke2 Rb7 39.Rg4 Be5 40.Rg1 Rb2 41.Kd3 Kf6 42.Rb1 Ra2 43.Rb4 Bd4 44.Ra4–/+ Rb2 45.Ra6 Bf2 46.Rc6 Bc5 47.Ra6 Kg5 48.Kc3 Rb7 49.Bd3 Kh4 50.Ra2 g5 51.Rg2 h5 52.Re2 Be3 (53.Re1 Kh3–+) 0–1. Nicklich,Wolfgang – Hassenzahl, corr DDR, 1981. (Nicklich,Wolfgang – Jandke,Manfred, DDR–ch M636 corr, 1979?)

4.Qc2 Nf6 5.a3 0-0 6.e3 Qe7 7.d3 Bc7 8.Nf3 Re8 9.Nbd2 d5 10.cd5 cd5 11.Rc1 Bd6 12.Be2 Bf5 13.0-0 Nbd7 14.e4 de4 15.de4+= Bg6 16.Nh4 Rad8 17.Ng6+/- hg6 18.Nc4 Bb8 19.Na5 Nb6 20.Bb5 Rc8 21.Qb3 Red8 22.Qe3 Ne8 23.Nc4 Bc7 24.Nb6 Bb6 25.Qg3 Nd6 26.Bd3 Bd4 27.Bd4 ed4 28.e5 Nf5 29.Qg4 Qe5=+ 30.Rce1 Qf6–/+ 31.Qe4 Rc3 32.a4 Qd6 33.b5 Qa3 34.Rd1 b6 35.g4 Nd6 36.Qe7 Re8 37.Qd7 Rd3 38.Rd3 Qd3 39.Qd6 Qe4 40.f3 Qe3 41.Kg2 d3 42.Rf2 g5 43.Qd7 Re7 44.Qc8 Kh7 45.Qc3 Rd7 46.Rd2 Rd4 47.Kg3?? Rg4!! (48.Kg4 Qf4 49.Kh3 Qf3#) 0–1. Graul,Matthias (2085) – Heck,Norbert (2320), Dresden ZMD op, 2004.

4.d4 Qe7 5.c5 Bc7 6.e4 ed4 7.Bd4 Nf6 8.Nc3 Ne4 9.Ne4 Qe4 10.Ne2 0-0 11.f3 Qg6 12.Nf4?? Bf4–+ 0–1. gtate (1990) – gregorgysi (2125), net–chess.com, 2005.

4.e3 Bb4 5.Be5 Nf6 6.Qf3 =.

4.e3 Nf6 5.a3 Qe7 6.Nc3 Bc7 7.Be2 d6 8.Nf3 Bg4 9.h3 Bh5 10.d4 e4 11.Nd2 Be2 12.Qe2 Nbd7 13.0-0 0-0 14.Rfd1 d5=+ 15.b5 Qd6 16.Nf1 Qe6 17.a4 Nb6 18.c5 Nc4 19.Rab1 Ba5 20.Ba1 Rfb8 21.Rdc1 a6 22.bc6 Qc6 23.Nd5+/- Nd5 24.Qc4 Rd8 25.Qb3 Rd7+= 26.Ng3 Qg6 27.Qc2+/- Ne3 28.Qe4+- Qe4 29.Ne4 Nf5 30.c6 bc6+= 31.Rc5 Rd5 32.Rc6 Nd4 33.Rc5 Rc5 34.Nc5 Nc6 35.g4 f6 36.Kg2 Rb8 37.Rb8+= Nb8 38.Kf3 Bb6= 39.Nd3 Kf7 40.Ke4 Ke6 41.f4 g6 42.f5 Kf7 43.Kd5 Bc7 44.Bd4 Bg3 45.Ba7 Nd7+= 46.Nc5 Bf2 47.a5 Nc5 48.Bc5 Be1 49.Bb6 h5 50.Kc6+- hg4 51.hg4 gf5 52.gf5 Kg7 53.Kb7 Kh6 54.Be3 Kh5= 55.Ka6 Ba5 56.Ka5 Kg4 ½–½. Melich,Jindrich (2190) – Shiber,Julia, Ceske Budejovice op, 1995.

4.e3 Nf6 5.a4 Na6 6.c5 Bc7 7.Qb3 (7.Ba6 ba6 8.Nf3 Qe7 9.Na3 Rb8 10.Nc4 Rb4 11.Nd6 Bd6 12.cd6; 7.Nf3 Qe7 8.Ba6 ba6 9.d4 e4 10.Ne5 0-0 11.0-0 Rb8 12.Qb3) 7...0-0 8.Nf3 Qe7 9.Nc3 d6 10.Ba6 ba6 11.cd6 Bd6 12.d4.

4.e3 Nf6 5.a4 Bb4 6.Be5 A) 6...0-0 7.Nf3 (7.Qf3 Be7 8.Nc3 d6 9.Bd4 Nbd7 10.Qd1 c5 11.Bf6 Bf6 12.Nf3) 7...Na6 8.Nc3 d6 9.Bd4 Nc5 10.Be2 Bc3 11.Bc3 Nfe4 12.0-0; B) 6...Na6 7.Nf3 (7.Nc3 d6 8.Bd4 0-0 9.Nf3 Bf5 10.Be2 Nc7 11.Qb3 c5 12.Bf6; 7.Be2 d6 8.Bb2 0-0 9.Nf3 Nc5 10.0-0 d5 11.Nc3 Bf5 12.Nd4) 7...d6 8.Bb2 0-0 9.Be2 Bg4 10.0-0 Re8 11.Nc3 Nc5 12.h3; C) 6...d6 7.Bb2 (7.Bg3 0-0 8.Nc3 Bf5 9.Nf3 Qa5 10.Qc1 Nbd7 11.Nd4 Bg6 12.Be2; 7.Bc3 Na6 8.Nf3 0-0 9.Qc2 Re8 10.Be2 d5 11.0-0 Bd6 12.d4; 7.Bf4 0-0 8.Nc3 Qa5 9.Rc1 Nbd7 10.Nf3 Ne5 11.Qb3 Nf3 12.gf3) 7...0-0 8.Nf3 Nbd7 9.Be2 Nc5 10.0-0 Bf5 11.Nd4 Bd3 12.Nc3.

4.e3 Nf6 5.a4 Qe7 6.b5 0-0 7.Ba3 (7.Nc3 e4 8.Nh3 a6 9.Be2 Be5 10.0-0 d6 11.Nf4 Nbd7 12.d4; 7.Qc2 Bb4 8.Nc3 d5 9.Nf3 Rd8 10.cd5 cd5 11.Na2 Bd6 12.Be2; 7.Be2 e4 8.Nc3 Be5 9.f4 Bc3 10.Bc3 d5 11.Nh3 Bh3 12.gh3) 7...Ba3 8.Na3 d5 (8...d6 9.Be2 e4 10.d4 Be6 11.Nh3 Bh3 12.gh3) 9.Nf3 (9.Qc2 a6 10.Qb2 ab5 11.ab5 Rd8 12.cd5) 9...Rd8 (9...e4 10.Nd4 c5 11.Nb3 Rd8 12.Be2) 10.Qb3 (10.cd5 e4 11.Nd4 c5 12.Nb3) 10...Bg4 (10...e4 11.Nd4 c5 12.Ne2) 11.Ng1 (11.cd5 cd5 12.Nc2) 11...Nbd7 12.Be2 (12.Qc2–+) 12...Nc5 13.Qc2 d4 (13...Be2!? 14.Ke2 e4 15.bc6 bc6 16.cd5 cd5 17.Nb5–+) 14.Bg4–/+ Ng4 15.f3?? (better 15.e4–/+) 15...de3–+ 16.fg4 ed2 (better 16...Rd2 17.Rd1 Rad8 18.Rd2 Rd2 19.bc6 Qh4 20.g3 Qf6 21.Qd2 ed2 22.Kd2 Qc6–+) 17.Ke2–/+ e4 18.Rd1 (18.Nh3!?–/+) 18...e3 19.Nb1 Nd3 20.Nh3 (20.Nc3 Nf2 21.Nf3–+) 20...Qe4 21.Rdg1 (21.Rhf1–+) 21...Nf4 22.Nf4 Qc2 23.Nd2 0–1. Schwichtenberg,Juergen (1870) – Blosze,Winfried (1905), Halle GER, 2011.

4.e3 Nf6 5.a4 Qe7 6.b5 e4 7.Nh3 (7.Nc3 0-0 8.Nh3 Be5 9.d4 ed3 10.Bd3 d5 11.cd5 Bh3 12.gh3; 7.Bf6 Qf6 8.Nc3 Qg6 9.h4 0-0 10.h5 Qe6 11.Nge2 Be5 12.Nd4; 7.Ne2 0-0 8.Nbc3 Be5 9.Ng3 d5 10.Ba3 Bd6 11.Bd6 Qd6 12.Be2; 7.Qc2 0-0 8.Nc3 a6 9.Nh3 ab5 10.ab5 Ra1 11.Ba1 Be5 12.Ng5; 7.Qb3 Bc5 8.Ne2 0-0 9.Nbc3 a6 10.Nd4 ab5 11.ab5 Ra1 12.Ba1; 7.Be2 Be5 8.Nc3 0-0 9.f4 Bc7 10.Nh3 d6 11.a5 Nbd7 12.0-0; 7.Bd4 0-0 8.Nc3 Be5 9.Be5 Qe5 10.d4 Qe7 11.Nge2 a6 12.Nf4) 7...0-0 8.Nc3 Bc7 9.Nf4 d6 10.d4 ed3 11.Bd3 Nbd7 12.0-0.

4.e3 Nf6 5.c5 Bc7 6.Nf3 e4 7.Nd4 d6 8.Nc3 0-0 9.Qc2 Re8 10.Bc4 dc5 11.bc5 Nbd7 12.Nb3 Qe7 13.Na4 Ne5 14.0-0-0? (better is 14.Be5!? Qe5 15.Nc3–/+) 14...Nc4 (14...Bg4 15.Rdf1 b5 16.cb6 ab6 17.Be5 Qe5 18.Nc3–+) 15.Qc4 b5 16.cb6 ab6 17.Nc3 Bd7 18.f4 (18.d3 b5 19.Qc5 Bd6–+) 18...b5 19.Qc5 Bd6 20.Qg5 Ba3 21.Nb1 Bb2 22.Kb2 Be6 23.Qe5 (23.Rc1 Qa7 24.a3 b4–+) 23...Ng4 (23...Ng4 24.Qd4 Nf2–+) 0–1. Mallmann,Bernd (1940) – Schupp,Tobias (2040), 3rd Rhein Main op, 2010.

4.e4 Qe7 5.a3 a5 6.b5 Bc5 7.Nf3 d6 8.Qc2 Nf6 9.h3 Be6 10.d3 cb5 11.cb5 0-0 12.Nbd2 Rc8 (13.Qb1 a4=+). Kipka – Hassenzahl, corr, 1976.

4.e4 Qe7 5.c5 Bc7 6.Nf3 Nf6 7.Nc3 0-0 8.Bc4 d6 9.cd6 Bd6 10.a3 Be6 11.Qb3 Bc4=+ 12.Qc4 Nbd7 13.0-0= Nb6 14.Qb3 Rfd8 15.d4 Rac8 16.Ne2 Ne4 17.Ng3?? Ng3–+ 18.fg3 e4 19.Ne5 Nd5?? 20.Rf7+/- Qe6 21.Raf1 Be5=+ 22.de5 Rf8 23.Rb7? Rf1–/+ 24.Kf1 Rf8 25.Kg1 Qf5?? 26.Qc4?? Qf2 27.Kh1 Qf1 (28.Qf1 Rf1#; 27...Qe1 28.Qf1 Rf1#) 0–1. gtate (1930) – gregorgysi (2210), net–chess.com, 2005.

4.e4 Nf6 5.Bd3 Qe7 6.a3 Bc7 7.Nf3 (7.Nc3 d6 8.Nf3 0-0 9.Be2 d5 10.cd5 cd5 11.ed5 e4=) 7...d6 (7...d5 8.cd5 cd5 9.ed5 Nd5 10.0-0 Nf4 11.Bc2 Nc6=) 8.h3 (8.0-0 0-0 9.Nc3 Nbd7 10.Be2 d5 11.cd5 cd5=) 8...Nbd7 (8...0-0 9.0-0 a5 10.Nc3 ab4 11.ab4 Ra1=) 9.Qc2 (9.0-0 Bb6 10.Bc2 0-0 11.d4 ed4=) 9...Nf8 (9...a5 10.0-0 ab4 11.ab4 Ra1=) 10.Nc3 (10.0-0 Ne6 11.Be2 0-0=) 10...Ng6 (10...Ne6 11.0-0 0-0=) 11.Ne2 (11.0-0 0-0=) 11...0-0 12.g3 Nh5 13.Nc3 a6 14.Be2 Nf6 15.0-0-0 b5 16.d4 bc4 17.Bc4 Be6 18.d5 cd5 19.Nd5 Nd5 20.Bd5 Rac8 21.Kb1 Bb6 22.Qe2 Qa7 (22...Bd7 23.Rc1+=) 23.Rh2 (better is 23.Be6!? fe6 24.Rd6+/-) 23...a5 24.b5 Qd7 25.a4 Ne7 26.Ka1? (better is 26.Be6!? Qe6 27.Qd3–/+) 26...Bd5 27.ed5 Rc5 28.Ba3 Rd5 29.Rd5 Nd5 30.Qe4? Nc3 31.Qd3 Rc8 32.Ne5 Qe6 33.f4 de5 34.fe5 Qb3 35.Ra2 (35.Qc3 Rc3 36.Bb2 Rg3 37.Rc2 Rg1 38.Rc1 Rc1 39.Bc1 Bd4 40.Bb2 Qb2) 0–1. Ilyashyk,Semen – Kamenets,A (2225), New Years All–Ukrainian Open, Poltava UKR, 2009.

4.Nf3 Qe7 (--> 3.Nf3 Qe7 4.c4 c6).

4.Nf3 Qe7 5.e3 (--> 4.e3 Qe7 5.Nf3).

4.f4 Qe7 5.c5= Bc7 6.fe5 Be5 7.Be5= Qe5 8.d4 Qe7 9.Nc3 Nf6 10.Qd3 0-0 11.e4 b6 12.Be2 d6 13.cd6+/- Qe6 14.e5 Nfd7 15.Nf3 h6 16.0-0 Bb7 17.a4 Na6 18.Rab1 Kh8 19.b5 Nab8 20.bc6 (20…Bc6 21.d5+-) 1–0. Ackermann,Robert (1955) – Gude,Michael, Nuremberg–ch op, 2006.

4.g3 Nf6= 5.Bg2 Bc7 6.c5 d5= 7.cd6 Qd6=+ 8.a3 0-0 9.Nc3 Bf5 10.d3 Re8 11.Nf3= h6 12.Nd2 Nbd7 13.0-0 a6 14.Qb3 Bb6 15.Rac1 Bd4 16.Nde4 Ne4 17.Ne4 Be4 18.Be4 Nf6 19.Bg2 Rad8 20.h3 Bb2=+ 21.Qb2 e4 22.de4 Ne4 23.Be4 Re4 24.e3 Re5 25.Rcd1 Rd5 26.Rd5 Qd5 27.Rc1 Qe4 28.Qc2 Qf3 29.Re1 Rd5 30.Qe2 Qf5?? 31.e4+- (31…Qd7 32.ed5 Qd5 33.Qe8 Kh7 34.Re7+-) 1–0. Struck,Bernd Dieter (1975) – Schlachetka,Werner (2065), Bad Zwischenahn Seniors op 1st, 2004.

5.d4 ed4 6.Qd4 Nf6 7.Nc3 d5 8.Nf3 0-0 9.e3 Bf5 10.Be2 Nbd7.

5.d4 ed4 6.g4 h6 7.Nf3 Nf6 8.Qd4 d6 9.cd6 Qd6 10.Nc3 Bg4.

5.d4 d6 6.de5 dc5 7.bc5 Qd1=+ 8.Kd1 Ne7 9.Nf3 0-0 10.e3 Nd7 11.Nbd2 Nc5 12.Bc4 Ng6 13.Ke2 Be6?? 14.Be6 fe6 15.Ba3+/- b6 16.Rac1 Ne5 17.Ne5 Be5 18.Bc5 bc5 19.Rc5 Bf6 20.Rc6 Rfe8 21.Rd1 Rac8 22.Rc8 Rc8 23.Ne4 Bd8 24.Rd7+- Bb6 25.Re7 Rc6 26.Kf3 Kf8 27.Rd7 h6 28.Nd6 Kg8 29.Kf4?? Bc7?? (30.Ke5 Bd6 31.Rd6 Rc2+/-; better is 29...Rd6 30.Rd6 Bc7–+) 0–1. islanderfan (1780) – chessdeviant (2200), net–chess.com, 2007.

5.d4 d6 6.de5 dc5 7.Qd8 Bd8 8.bc5 Na6 9.Bd4 Be7 10.g3 Nc5=+ 11.Nf3 Bg4 12.Bg2 f6 13.ef6 Nf6 14.Ne5 Rd8=+ 15.e3 0-0 16.Ng4 Ng4 17.0-0 Nd3–/+ 18.f3 Rd4!–+ 19.ed4 Bf6 20.Nd2?? Bd4 21.Kh1 Ngf2 22.Kg1 Nh3 23.Kh1 Ndf2 24.Rf2 Nf2 25.Kg1 Nd3 26.Kf1 Ba1 0–1. katchum (1785) – gregorgysi (1895), net–chess.com, 2001.

5.d4 d6 6.de5 dc5 7.Qd8 Bd8 8.bc5 Nd7 9.e6 Nc5 10.Bg7+= Bf6 11.ef7 Kf7 12.Bf6 Nf6 13.Nc3 Bf5 14.e3 Nd3 15.Bd3+/- Bd3 16.Nge2 Be2 17.Ne2 Rad8 18.0-0 Rd2 19.Nd4 Ne4 20.a4 a5 21.Rab1 Rb8? 22.Nc6!+- Rf8 23.Rb7 (23…Kg8 24.Na5+-) 1–0. chessdeviant (2200) – islanderfan (1780), net–chess.com, 2007.

5.d4 Qe7 6.Nc3 d5= 7.de5 f6 8.ef6+= Nf6 9.e3 0-0 10.Nf3 Nbd7 11.Be2 Ng4 12.Qd4 Nde5+= 13.h3 Nf3 14.Bf3 Be5 15.Qd2 Qh4 16.g3 Qf6 17.Bg4 Bg4 18.hg4 d4 19.ed4 Bd4 20.Ne4 Rae8? 21.Qd4 Re4 22.Qe4 Qf2 23.Kd1 Qb2 24.Qh7 Kf7 25.Rf1 Ke7 26.Qe4 Kd7 27.Rf8 Qa1 28.Kc2 (28…Qa2 29.Kc3 Qa3 30.Kd2 Qb2 31.Ke3 Qc1 32.Ke2 Qb2 33.Kf3 Qc3 34.Kf4 Qd2 35.Kf5 Qd5 36.Qd5 cd5 37.Rf7 Kc6 38.Rg7+-) 1–0. Schuettig – Kittel, corr DDR, 1988.

5.d4 Qe7 6.e3 d5 7.de5 Be5 8.Be5 Qe5 9.Nd2 Nf6 10.Ngf3 Qe7 11.Bd3 0-0 12.0-0 Bg4 13.Qb3 Nbd7 14.Rfe1 Rfe8 15.Nd4 Ne5 16.h3 Bd7 17.Rec1 Nd3 18.Qd3 Ne4 19.N2f3 Rec8 20.Nb3 b6 21.Qa6 Re8 22.Qd3 a5 23.a4 bc5 24.bc5 Reb8 25.Nfd2 Nf6 26.Qc3 Qd8 27.Nd4 Rb4 28.Rcb1 Rab8 29.Rb4 Rb4 30.Nc2 Rb8 31.f3 Qc7 32.Kf2 h5 33.h4 Qh2+= 34.Qd4 Bf5–/+ 35.Nf1 Qc7 36.Qc3 Bc2 37.Qc2 Qe5 38.Rb1 Rb1 39.Qb1 d4 40.Qc2 de3 41.Ne3 Qd4 42.Ke2 ½–½. Thesing,Michael (1915) – Rosing,Hermann (1985), Muensterland Verbandsklasse–B, 2007.

5.d4!? Qe7 6.de5 Be5 7.Nc3 =.

5.d4 Qe7 6.de5 Be5 7.Be5 Qe5 8.Nd2 =.

5.e3 d5 6.cd6 Qd6 7.a3 Ne7 8.Nf3= Ng6 9.h4 h5 10.Nc3 Bg4 11.Qb3 Bf3=+ 12.gf3 Qf6 13.f4 Nd7 14.0-0-0 Qf5 15.d4 Nf4 16.ef4+/- Qf4 17.Kb1 ed4+= 18.Na4 0-0-0 19.Bh3 Kb8?? 20.Rd4+- Nc5 21.Rd8 Rd8 22.Nc5 b6 23.Bg2 bc5 24.bc5 Kc8 25.Bc6 Qf5 26.Ka1 Rd2 27.Re1 (27…Rb2 28.Bb7 (< 28.Kb2 Qf2 29.Qc2 Qe1=+) 28...Kd8 29.Qd1 Qd7 30.Qd7 Kd7 31.c6 Kd8 32.Rd1 Ke8 33.Kb2+-; 27.Qb7 Kd8 28.Re1 Be5 29.Be5 Qe5 30.Re5 Rd1 31.Kb2 Rd2 32.Kc3 Rc2 33.Kc2 a6 34.Re8#) 1–0. Roelvaag,M – De Cat,B, Oslo Norway, 1990.

5.e4 Nf6 6.d3 Qe7 7.Nf3 0-0 8.Nbd2 d6 9.cd6 Bd6 10.a3 a5 11.Nc4 Bg4 12.Be2 Bf3–/+ 13.Bf3 Bc7 14.0-0 b5 15.Ne3= Qe6 16.d4 ed4 17.Bd4 Rd8 18.Nf5 Be5 19.ba5? Bd4 20.Rc1?? Bf2! (21.Rf2 Rd1 22.Rd1 Nbd7–+) 0–1. coloplayah (2145) – gregorgysi (2315), net–chess.com, 2006.

5.Nf3 Na6 6.Qb3 d6 7.cd6 Bd6 8.Ne5 Qe7 9.Nd3 Nf6 10.b5 Nb4.

5.Nf3 Na6 6.Be5 Be5 7.Ne5 d6 8.cd6 Qd6 9.d4 Nb4 10.Na3 Nf6.

5.Nf3 Na6 6.Ne5 Nb4 7.Qb3 Qe7 8.Nc4 Qc5 9.Bg7 b5 10.Qe3 Qe7.

5.Nf3 d6 6.Na3 dc5 7.Be5 Be5 8.Ne5 Qd5 9.Nd3 Na6 10.b5 Nb4.

5.Nf3 d6 6.cd6 Bd6 7.Na3 Nf6 8.Ne5 Nbd7 9.Nd7 Bd7 10.Nc4 Be6.

5.Nf3 Qe7 (--> 3.Nf3 Qe7 4.c4 c6 5.c5 Bc7).

5.Nf3 f6 6.d4 e4 7.Nfd2 f5 (better 7...d5!?=) 8.d5+/- Qg5 9.d6 Bd8 10.h4 Qg6 11.e3 Bf6 12.Nc3 a5 13.a3 b6 (better 13...Nh6!?+/-) 14.cb6+- ab4 15.ab4 Ra1 16.Qa1 (16.Ba1 Ba6 17.Ba6 Qg2+-) 16…Nh6 1-0. BeepBeepImAJeep - grandmatt (2525), lichess.org, 2017.

5.Nf3 f6 6.g3 Ne7 7.Bg2 d5 8.cd6 (8.0-0 Bf5=) 8...Bd6+= 9.0-0 (9.a3 a5+=) 9...b6 (9...Bb4!? 10.a3 Bd6–/+) 10.d4 (better is 10.a3=) 10...Ba6 (better is 10...e4 11.Nfd2 f5=) 11.de5+/- fe5 (11...Bb4 12.Qd8 Kd8 13.ef6 gf6 14.Bf6 Rf8+/-) 12.b5 (better is 12.Be5!? Bb4 13.Qd8 Kd8 14.Bg7+/-) 12...Bb5+= 13.Nc3 Nd7?? (better is 13...Bc4+=) 14.Qd6+- Nc8 (14...Qb8 15.Nb5 cb5 16.Qb4+-) 15.Qd2 (15.Qe6 Qe7 16.Qe7 Ne7 17.Nb5 cb5 18.Ne5 Rd8+-) 15...Ne7 16.Nb5 cb5 17.Rfd1 (worse is 17.Ne5 Ne5 18.Qd8 Rd8 19.Be5 Kf7+-; worse is 17.Be5 Ne5 18.Qd8 Rd8 19.Ne5 Rd2+-) 17...0-0 (17...a6+-) 18.Qd7 Qd7 19.Rd7 Ng6 (19...Rfe8 20.Rad1 Rac8 21.Ne5+-) 20.Ne5 Ne5 21.Be5 Rae8 22.Bd5 1–0. Janek – Djaekiboy, internet, 2017.

5.Nf3 Nf6 6.Ne5 d6 7.cd6 Qd6 8.Na3 Qb4 9.Nd3 Qe4 10.Qc1 Na6.

5.a3 Nf6 6.Bd3 Bc7 7.Qc2 0-0 8.Nc3 d6 9.Nge2 Be6 10.0-0 Nbd7 11.f4 Nb6 12.Nd1 e4 13.Be4 Ne4 14.Qe4 f5 15.Qc2 Nc4 16.Bc3 a5 17.Nb2 ab4 18.ab4 Na3 19.Qc1 Nb5 (20.Qc2 Bb6=+). Stabenow,Juergen – Hassenzahl,M, corr (year?).

5.b5 Nf6= 6.Nc3 Bc7 7.a4 d6 8.Nf3 e4 9.Nd4 c5 10.Nde2 a5 11.Ng3 h5 12.Qc2+/- d5 13.cd5 Bg3+/- 14.hg3 Bf5 15.Qb3 Nbd7+= 16.b6 Kf8 17.Ba3 Ng4 18.Rc1 Rh6 19.Ne2 Rc8 20.Nf4 h4 21.Qc3 hg3= 22.Rh6 gf2 23.Kd1 Nh6=+ 24.Qa5 Bg4–/+ 25.Kc2 Nf5 26.Bb5 Ng3 27.Qc3 Qf6 28.Bd7 Qc3 29.dc3 Bd7 30.a5 f1Q 31.Rf1 Nf1 32.a6 ba6 33.b7 Ba4 34.Kb2 Rb8 35.Bc5 Ke8 36.c4 Rb7 37.Kc3 Rb3 38.Kd4 Ne3 39.Nh5 f5 40.Ng7 Kf7 41.Ne6 Rd3 42.Ke5 Nc4 (43.Kf4 Rd5 44.Ng5 Kg6–+) 0–1. Zylla,Johannes – Loeber, BSF–VM C–Turnier, 1995.

5.b5 Nf6= 6.Be2 0-0 =.

5.b5 Nf6 6.Nf3 0-0 7.Nc3 Re8 8.Be2 Bc7 9.e4 d6 10.0-0 h6 11.d3 Be6 12.a4 b6 13.h3 a6 14.Nh2 cb5 15.cb5 d5=+ 16.ed5 Nd5 17.Bf3 Nc3 18.Bc3 Ra7 19.Re1 Nd7 20.Ng4 f6 21.Ne3 Qf7 22.d4 Bb3 23.Qb1 ed4 24.Bd4 ab5 25.ab5+= Ra1 26.Qa1 Be5 27.Bc6 Bd4 28.Qd4+- Rd8? 29.Nf5 Qc4 30.Qd6 (30...Qc5 31.Qc7 (31.Bd7?! Qd6 32.Nd6 Rd7+=) 31...Qf5 32.Qd8 Nf8 33.Qb6+-) 1–0. algernon (2110) – gregorgysi (2190), net–chess.com, 2005.

5.c5 Bc7 6.Nf3 (--> 3.Nf3 Qe7 4.c4 c6 5.c5 Bc7 6.e3).

5.Nf3 Bc7 6.b5 f5 7.Nc3 Nf6 8.Qb3 d6 9.a4 Nbd7 10.Be2 Nc5 11.Qc2 e4 12.Nd4 Ne6? 13.Nf5+- Qf7 14.Ng3 d5 15.cd5 cd5+/- 16.0-0 Bg3 17.fg3 Qc7 18.Rac1 Qd8 19.Ba3 b6? 20.Rf6! Qf6 21.Nd5 Qd8 22.Qe4 Qd7 23.Bh5 (23…Kd8 24.Be7 Qe7 25.Ne7 Ke7 26.Qa8+-; 23.Nc7 Kd8 24.Qh4 g5 25.Ne6 Qe6 26.Qg5 Kd7 27.Qg7 Kd8 28.Qc7 Ke8 29.Bh5 Qg6 30.Qe7#) 1–0. Schuehler,Ernst – Stabenow,Juergen, corr DDR, 1980.

5.Nf3 Bc7 6.Be2 Nf6 7.a3 a5= 8.0-0 ab4 9.ab4 Ra1 10.Ba1 e4 11.Nd4 Qb4 12.Nf5+= Rg8 13.Nc3 d5= 14.Nd4 dc4 15.Qc2 Qe7 16.Rb1 b5=+ 17.Ndb5 cb5 18.Nb5 Ba6 19.Nc7 Qc7=+ 20.Qa4 Nfd7 21.Bg4 Ke7 22.Bb2? Qc6?? 23.Ba3+/- Kd8?? 24.Rb8!+- Nb8 25.Qa5 Qc7 26.Be7 Ke7 27.Qc7 Kf6 28.Qd6 (28...Kg5 29.Qf4 Kg6 30.Qf5 Kh6 31.Qh5#) 1–0. Poschmann,Hans – Stabenow,Juergen, corr ICCF theme, 1979.

5.Nf3 Nf6+= 6.a3 0-0= 7.d3 Bc7 8.Be2 d6 9.Nbd2 Bg4 10.0-0 Nbd7 11.Re1 d5 12.Nd4 Be2=+ 13.Ne2 Qd6 14.Ng3 Rfe8 15.cd5 cd5 16.Nf3 Rac8 17.e4 d4 18.Nf5 Qf8 19.Bc1+= b5 20.N3h4 a5 21.g4 Re6 22.Bd2 a4 23.Kh1 Qd8 24.Rg1 Nf8 25.Qf3 Bb8 26.Bh6 Ne8=+ 27.g5? Rc3?? 28.Bg7+= Ng7 29.Nh6 Rh6 30.gh6 Ng6 31.Ng6 fg6 32.hg7+/- Kg7 33.Rac1 Ba7 34.Qh3+/- Qc7 35.Qf1 Qf7= 36.Qe2 Qf4 37.Ra1+/- Bb6 38.Rg4 Qf7 39.Rg3 Bd8 40.Kg2 Bh4= 41.Rg4 g5 42.Kh1+= h6 43.Rgg1+/- Qf4 44.Ra2 Kf8 45.Rd1 Qf7 46.Rdd2 Qb3 47.Kg2 Qe6 48.Rdc2 g4+= 49.f3 gf3 50.Qf3 Ke7 51.Qh3 Bg5?? 52.Qe6+- Ke6 53.Rc3 dc3 54.Rc2 Bd2 55.Kf1 Kf6 56.Ke2 Kg5 57.Rd2 cd2 58.Kd2 Kf4 59.Ke2 h5 60.Kf2 1–0. Dupont,Gerhard – Hagemeister,Rudolf, corr DDR–ch14, 1985.

5.Nf3 Nf6= 6.b5 0-0 7.Nc3 +=.

5.Nf3 Nf6= 6.b5 Bc7 7.Nc3 0-0 8.d4 d6 9.Be2 Bg4 10.0-0 Ba5 11.de5 de5+= 12.h3 Bf3 13.Bf3 e4 14.Be2 Bc7 15.Qc2+= Nbd7 16.a4 Rfe8 17.a5 Qe5 18.g3 Qg5 19.Kg2 Nc5 20.Na4 Nd3 21.Bf6 Qf6=+ 22.Nc3 Qg6 23.a6 Nf2 24.Rf2 Qg3 25.Kf1 Qh3 26.Rg2?? Re6–+ (27.Nd1 Rg6 28.Qe4 Qh1 29.Kf2 Bg3 30.Rg3 Qe4 31.Rg6 fg6 32.ab7 Rf8 33.Ke1 cb5 34.Ra7 b4–+) 0–1. Wolf,M – Kampfhenkel,Ulrich, corr DDR–Cup5, 1979.

5.Nf3 Nf6 6.c5 Bc7 7.Bc4 0-0 8.0-0 d5 9.cd6 Bd6 10.a3 a5 11.b5 e4 12.Bf6 Qf6 13.Nd4 cb5 14.Bb5 Nc6 15.Bc6 bc6 16.Nc3 Qh6 17.f4 ef3 18.Nf3 Re8 19.Qa4 Bf5 20.Qh4 Qh4 21.Nh4 Bd3 22.Rfc1 Rab8 23.Na4 Be5 24.Ra2 Rb1 25.Rb1 Bb1 26.Rb2 Bb2 27.Nb2 Ba2 28.Kf2 Rb8 29.Nd1 Rb3 30.Nf5 Rd3 31.Ke2 Ra3 32.Ne7 Kf8 33.Nc6 Bd5 34.Ne5 Bg2 0–1. Zecha – Gaprindashvili,Valerian, OIBM99 – Bank Hofmann, 1999.

4.b5 Nd4 5.e3 Ne6 6.Nf3 f6 7.Be2 c6 8.0-0 Bc7 9.a4 Ne7 10.d3 0-0 11.d4 ed4 12.Nd4 c5 13.Ne6 de6 14.Nd2 Bd6 (14...Qd6 15.Nf3+=) 15.Bf3 (15.Ne4!? Bc7 16.Bf3+/-) 15...Qc7= 16.g3 Bd7 17.Ne4 Be5 (17...Nf5 18.a5+=) 18.Qc2 (18.Be5!? fe5 19.Bg2+/-) 18...f5 19.Nd2 (19.Be5 Qe5 20.Nc3+=) 19...Rf6 (better is 19...Bb2!? 20.Qb2 e5=) 20.Be5+/- Qe5 21.Bb7 Rb8 22.f4?? (22.Bg2 Qc7+/-) 22...Qc7?? (better is 22...Qe3 23.Kg2 Rb7+=) 23.Bg2+/- a6 (23...e5 24.Rad1+/-) 24.e4 Rh6 (24...e5 25.Rae1 ef4 26.e5+-) 25.ef5 (25.e5 Be8+-) 25...ef5 26.Rfe1 Re8 27.Nf3 ab5 28.ab5 Nc8 29.Re8 Be8 30.Qf5 g6 31.Qe4 Nd6 32.Qc2 Bf7 33.Ra8 Be8 34.Qe2 Kf7 35.Ng5 Kg7 36.Ne6 1–0. Valpa – Adamant, playchess.de, 2004.

4.c5 Be7 5.a3 Nf6 6.e3 (6.b5 Nd4=) 6...0-0 (6...d6 7.b5 Nb8 8.cd6 Bd6 9.d4+=) 7.Bc4 (7.b5 Nb8=) 7...d5 8.cd6 Bd6 9.Qc2 e4 10.Nc3 Be5 (10...Bf5!?+=) 11.d4= Bd6 (11...ed3 12.Bd3 Bg4 13.b5=) 12.Nge2 Ng4 (better is 12...Re8!?+=) 13.Ne4+/- a6 14.Nd6 Qf6?? (better is 14...Qd6 15.Bd3 f5+-) 15.Ne4+- Qg6 16.h3 Nf6 17.Bd3 Bf5 (17...Ne4 18.Be4 f5+-) 18.Nf6 Qf6 19.Bf5 Ne7 (19...Qh6 20.Be4 Rae8 21.Ng3+-) 20.Bh7 Kh8 21.Be4 Qh6 (21...c6 22.d5 Qg5 23.d6+-) 22.Qc7 Rae8 23.Qb7 f5 24.Bd3 f4 25.Nf4 Ng6 26.Ng6 Qg6 27.Bg6 (27.Bg6 Re6 28.Bd3+-) 1–0. Janek – reggae, internet, 2016.

4.c5 Bc5 5.bc5 0-0 (5...Nbc6 6.Nf3 d6 7.cd6 cd6 8.d4+-) 6.Nf3 (6.Be5 Nbc6 7.Bg3 Nf5+-) 6...Ng6 (6...d6 7.cd6 cd6 8.e4+-) 7.h4 (7.Ne5 Ne5 8.Be5 Re8+-) 7...Qe7 (7...d6+-) 8.h5 Nf4 9.e3 (9.Be5 Nd5+-) 9...Nd5 (9...e4 10.Nd4 (10.ef4?! ef3 11.Be5 d6+=) 10...Ne6 11.Qg4+-) 10.h6 gh6 (10...g6 11.Qb3 (11.Be5?! Qc5 12.Bd4 Qd6+-) 11...c6 12.Ne5+-) 11.Rh6 (better is 11.Ne5 f6 12.Qg4 Qg7+-) 11...Qc5 (11...Nc6+-) 12.Ne5 Qb4 13.Qh5 Qb2 14.Qg4 (better is 14.Qf5 Qc1 15.Ke2+-) 14...Kh8 15.Rh7!! Kh7 (15...Kh7 16.Bd3 Mate attack) 16.Bd3 f5 17.Bf5 Rf5 18.Qf5 Kh8 19.Qf8 Kh7 20.Qf7 Kh8 21.Ng6 1–0. Janek – AxelG, internet, 2017.

4.c5 Bc5 5.bc5 d6 6.cd6 cd6 7.d4 Qb6 8.Qb3 Qb3 9.ab3 Nbc6 10.de5 de5 11.Nf3 f6 12.e4 Be6 13.Bc4 Bc4 14.bc4 0-0 15.Nc3 Rfd8 16.Ke2 a5 17.Ba3 Ng6 18.Nd5 a4 19.Rhb1 Na5 20.Nd2 Ra6 21.Rb4 Nc6 22.Rb7 Nd4 23.Kd1 Nh4 24.g3 Nhf3 25.Nf3 Nf3 26.h4 Nd4 27.Rab1 Nb3 28.Kc2 Raa8 29.Kc3 Kh8 30.h5 Ra6 31.Be7 Rda8 32.h6 Kg8 33.hg7 Na5 34.Bf8 Nb7 35.Ne7 1–0. Benassi,Aspasio – Mauri,Paolo, EP007, 1999.

4.c5 Bc5 5.bc5 d6 6.cd6 cd6 7.d4 Qb6 (7...Nbc6 8.de5 Qb6 9.Qb3 Qb3 10.ab3 de5 11.Nf3+-) 8.Qb3 (8.Qd2 Nbc6+-) 8...Qb3 9.ab3 Nbc6 10.de5 de5 11.Nf3 f6 12.e4 Be6 13.Bc4 (13.Nbd2 0-0+-) 13...Bc4 14.bc4 0-0 (14...Ng6 15.Nc3+-) 15.Nc3 Rfd8 (15...Nb4 16.0-0-0+-) 16.Ke2 (16.Nd5 Nc8+-) 16...a5 (16...Nc8 17.Nd5+-) 17.Ba3 (17.Nd5 Nc8+-) 17...Ng6 (17...g5 18.h3 Ng6 19.Nd5 Nf4 20.Nf4 gf4 21.Rhd1+-) 18.Nd5 a4 (18...Nf4 19.Nf4 ef4 20.Rhb1+-) 19.Rhb1 Na5 (19...Rdb8 20.Bd6 Rd8 21.Bc7+-) 20.Nd2 Ra6 (20...Nf4 21.Nf4 ef4 22.Bc1+-) 21.Rb4 (21.Bc1 Nc6 22.Rb7 Rb8 23.Rb8 Nb8+-) 21...Nc6 (21...Nf4 22.Nf4 ef4 23.Ra2+- (23.Ra4?! Nb3 24.Nb3 Ra4+-)) 22.Rb7 Nd4 (22...Na5 23.Rc7 Nf4 24.Nf4 ef4 25.Nf3+-) 23.Kd1 Nh4 (23...h6 24.Bc5 Ne6 25.Bb6+-) 24.g3 Nhf3 25.h4 (better 25.Nf3 Nf3 26.h4+-) 25...Nd2 26.Kd2 Nb3 27.Rb3! ab3 28.Kc3 Rb8 29.Bb2 Ra1 30.Ba1 Kf8 (30...Kf7 31.Bb2+-) 31.Bb2 Kf7 32.c5 Rc8 33.Ba3 (33.Kb3?! Rc5 34.g4 Ke6+-) 33...Ke6 34.Kb3 g6 (34...f5 35.f3+-) 35.Kc4 h6 (35...f5 36.f3+-) 36.g4 g5 (36...h5 37.gh5 gh5 38.f4+-) 37.hg5 (37.h5 Kf7+-) 37...hg5 38.Kb5 Rb8 39.Nb6 Rd8 (39...Rb7 40.c6 Rh7 41.Nd5+-) 40.c6 Rh8 41.c7 (41.c7 Rg8 42.Bc5+-) 1–0. Benassi,Aspasio – Mauri,Paolo, EP007, 1999.

4.c5 Be7 5.Be5 0-0 6.Bb2 (6.Nf3 Nc6 7.Bc3 d6+=) 6...Nc6 (6...d6 7.Nf3+=) 7.a3 d5 (7...d6 8.cd6 Bd6 9.Nf3+=) 8.Nf3+= Be6 (8...Bf5 9.e3=) 9.e3= a5 (9...Ne4!?=) 10.b5+/- Na7 11.Qc2 Nb5?? (better is 11...g6+=) 12.Bb5+- c6 13.Be2 Qd7 (13...Ne4 14.d4+-) 14.h3 (14.0-0 Bf5 15.d3 b5+-) 14...Bf5 (14...Ne4 15.Bd4+-) 15.d3 Rfe8 (15...Ra6 16.Ne5 Qc7 17.Bd4+-) 16.0-0 Qe6 (16...Bd8 17.Nbd2+-) 17.Nd4 Qd7 (17...Qc8 18.Nf5 Qf5 19.Nd2+-) 18.Nf5 (18.Nd2 Bd8+-) 18...Qf5 19.Nd2 h6 20.Nf3 Bd8 21.Nd4 Qe5 (21...Qg6 22.Bf3+-) 22.Nc6! Qe6 (22...bc6 23.Be5 Discovered attack) 23.Nd8 Rad8 24.Bf3 (24.Bd4 Rc8+-) 24...Rc8 (24...Nd7 25.Rab1 Rc8 26.d4+-) 25.Bf6 Qf6 26.Bd5 b6 (26...Re5 27.e4 Rg5 28.Rfb1+-) 27.c6 Rcd8 (27...Re5 28.e4+-) 28.Qb3 Rb8 (28...Re7 29.d4+-) 29.c7 Rbc8 30.Rac1 Qd6 (30...a4 31.Qb5 Re7 32.Rc6+-) 31.Rc6 (31.Bf7 Kh8 32.Be8 Rc7 33.Rc7 Qc7 34.Bg6 Qe7 35.Rc1 b5 36.Rc8 Qd8 37.Rd8) 31...Rc7 (31...Qd7 32.Rfc1 Re5+-) 32.Rd6 Rec8 33.Rb6 (33.Bf7 Kh8 34.Qd5 Rf7 35.Qf7 a4 36.Rb6 Kh7 37.Qf5 Kg8 38.Qc8 Kh7 39.Qf5 g6 40.Qg6 Kh8 41.Rb8) 33...Rc3 34.Bf7 Kh7 (34...Kh8 35.Qb5 R8c6 36.Rc6 Rc6 37.Qb8 Rc8 38.Qc8 Kh7 39.Qg8) 35.Qe6 Rf8 (35...R3c5 36.d4 Rc4 37.Qf5 Kh8 38.Rh6 gh6 39.Qf6 Kh7 40.Qg6 Kh8 41.Qh6) 36.Qf5 Kh8 37.Rh6! gh6 (37...gh6 38.Qf6 Mate attack) 38.Qf6 Kh7 39.Qg6 Kh8 40.Qh6 1–0. Campos,W Batista (1735) – Lima,E Sousa Perei (1750), IRT DE FAaRIAS DE BRASA?LIA, 2016.

4.c5 Bf8 5.Be5 d6 6.cd6 Bd6 7.Bd6 Qd6 8.a3 0-0 9.e3 a5 10.b5 c6 11.bc6 Nc6 12.Nf3 Re8 13.Be2 Bf5 14.d4 Rac8 15.0-0 Ne7 16.Bd3 Bg4 17.h3 Bh5 18.Nbd2 Rc3 19.Be2 Ra3 20.Nc4 Ra1 21.Qa1 Qd5 22.Qa5 Bf3 23.gf3 b5 (better 23...Qe6!?+=) 24.Ne5+- Nc6 25.Qb5 (25.Nc6 Qc6 26.Qb5 Qe6+-) 25...Ne5+/- 26.Qd5 Nd5 27.de5 Re5 28.Ra1 h5? (28...Nb6 29.f4 Rd5 30.Bf3+/-) 29.Ra7?? (better 29.Ra5 g6 30.Bd3+-) 29...Nf4 30.Bf1 (30.ef4?! Re2 31.Ra5 g6=) 30...Ne6 31.Bc4 Ng5? (31...g5 32.Kh2+/-) 32.Kg2 (better 32.f4!? Nf3 33.Kg2 Nh4 34.Kf1+-) 32...Rc5+/- 33.Ba2 h4 (33...Ne6!?+/-) 34.f4+- Ne4 (34...Ne6 35.Kf3+-) 35.Rf7 Kh7 36.Re7 Nf2?? (36...Nf6+-) 37.Bb1 (37.Bb1 Ne4 38.Be4 Kg8 39.Re8 Kf7 40.Rh8+-) 1-0. jhonores (2250) - Black_Adder (2230), Rated Blitz game, lichess.org, 2020.

4.de5 Ne5 5.f4+= Ng6 6.Bg7+/- N8e7 7.Bh8 c6?? 8.Nf3 Qb6 9.e3 Bb4 10.c3 Ba5 11.Qe2 d5?? 12.Nd4 c5? 13.Nb3 Bf5?? 14.Qd2 0-0-0?? 15.Bd3 Rh8 16.Bf5 Nf5 17.0-0 c4 18.Nd4 Nd4 19.ed4 Qf6 20.Qf2 Re8 21.Nd2?? Bc3–+ 22.Rae1 Bd2?? 23.Re8+- Kd7 24.Re2 Ba5 25.Kh1 Bc7 26.Rb2 Kc6 27.a4 b6 28.Rb5 Bf4? 29.g3 Bd6 30.Qf3 Ne5?? 31.Qf6 (31...Ng6 32.Qd8+-) 1–0. Guest18755 – Guest18530, 2003.

4.g4 Bb4 5.c3 A) 5...Be7 6.Bg2 (6.d5 Nb8 7.e4 d6 8.Bc1 c6 9.Qf3 Bg5 10.Nd2 Nf6 11.h3 0-0 12.Ne2–+) 6...ed4 7.cd4 d5 8.Nc3 Bb4 9.a3 Ba5 10.h3 h5 11.gh5 Nf6 12.e3–/+; B) 5...Ba5 6.d5 (6.Nf3 e4 7.d5 ef3 8.dc6 bc6 9.ef3 Rb8 10.Qe2 Ne7 11.Qc2 0-0 12.Bd3–+) 6...Nce7 7.Na3 Bb6 8.Nc4 d6 9.Nb6 ab6 10.g5 Bf5 11.f3 Ng6 12.Bc1–+.

4.g4 Nd4!? A) 5.a3 A1) 5...a5 6.e3 (6.ba5 Ra5 7.Nd2 b5 8.Bg2 Qe7 9.e3 Nc6 10.c4 bc4 11.Bc6 dc6 12.Nc4–/+) 6...Ne6 7.b5 Nh6 8.h4 f6 9.Bc4 Be7 10.g5 Nf5 11.gf6 Bf6 12.Be6+=; A2) 5...Nh6+= 6.h3 (6.e3 Ne6 7.Nd2 f6 8.Bg2 Be7 9.Nb3 c6 10.c4 d6 11.h3 0-0 12.Nf3–/+) 6...a5 7.Bd4 ed4 8.Qd4 Qg5 9.Nd2 ab4 10.Ne4 Be5 11.Qb4 Qe7 12.Qe7–/+; B) 5.Nd2 B1) 5...Nh6 6.e3 (6.h3 f6 7.a3 Ne6 8.Ngf3 Be7 9.e4 Nf7 10.Bc4 Nf4 11.Nb3 Nd6 12.Bd3–/+) 6...Ne6 7.a3 f6 8.Nh3 Be7 9.f4 ef4 10.ef4 f5 11.g5 Ng4 12.Qf3–/+; B2) 5...f6 6.e4 (6.a3 Ne6 7.e4 Be7 8.Bc4 Nh6 9.Nb3 d6 10.h3 Ng5 11.Qe2 c6 12.Rd1–/+) 6...Be7 7.Bc4 Ne6 8.a3 Nh6 9.Nb3 Nf7 10.Be6 de6 11.Qd8 Bd8 12.Nf3–/+.

4.g4 Nf6 5.g5 (5.de5 Ne5 (5...Be5 6.Be5 Ne5 7.g5 Ne4 8.h4 Qe7 9.c3 b6 10.Bg2 Bb7 11.Qc2 Ng4 12.Bf3–/+) 6.g5 Nh5 7.Bc1 Bb4 8.c3 Bc5 9.e4 g6 10.Be2 Ng7 11.Nf3 Nf3 12.Bf3–/+) 5...Nh5 (5...Ng8 6.d5 (6.a3 Nd4 7.Bd4 ed4 8.Nf3 c5 9.Qd3 Be7 10.bc5 Bc5 11.Nbd2 d6 12.Nb3+=) 6...Nb4–/+ (worse is 6...Bb4 7.c3+/- Be7 8.dc6 bc6 9.Nf3 Bg5 10.Ne5 Rb8 11.Nd3 Ba6 12.c4+/- 1.22) 7.Nf3 Na6 8.Nbd2 Nc5 9.Rb1 f6 10.gf6 Nf6 11.Ne5 Na4 12.Ba1=; 5...Ne4 6.Bg2 f5 7.gf6 Nf6 8.de5 Be5 9.Be5 Ne5 10.Nf3 Qe7 11.c3 Nf3 12.Bf3+=) 6.Nf3?? (better is 6.b5 Nb8 7.de5+/- Bb4 8.c3 Be7 9.e3 g6 10.Nf3 Bg5 11.Ng5 Qg5 12.c4+/-) 6...e4–/+ 7.Nfd2 (7.b5 ef3 8.bc6 bc6–/+) 7...e3 8.fe3 Qg5 9.Nf3 Qe3 (9...Bb4?! 10.c3 Qe3 11.cb4 Nb4 12.Qd2 Qd2 13.Kd2+= (worse is 13.Nfd2 Nc2 14.Kd1 Na1–+)) 10.Bg2? (better is 10.a3!?–/+) 10...Nf4–+ 11.Bc3?? (11.Bf1 Bb4 12.c3–+) 11...Ng2 12.Kf1 Nf4 (better is 12...Qf3 13.ef3 Ne3 14.Kf2 Nd1 15.Rd1 Nb4 16.Bb4 Bb4–+) 13.Nbd2 (13.Bd2 Qe6 14.Rg1–+) 13...Qc3 14.Rg1 (14.Ne4 Qb4 15.a3 Qc4 16.Nd6 cd6–+) 14...Nd5 15.e4 (15.Kf2 Nd4 16.Nc4 Qc4 17.Qd4 Qd4 18.Nd4–+) 15...Ne3 16.Kf2 Nd1 17.Rad1 Nd4 18.e5 Bb4 19.Ra1 b5 20.e6 fe6 21.Rg4 0-0 (21...Nf3 22.Ne4 Qa1 23.Rf4–+) 22.Rd4 Qd4 23.Ke2 Rf3 24.Nf3 Qe4 25.Kf2 Bb7 26.Ng1 (26.Nh4 Qh4 27.Ke3 Qe4 28.Kf2 Qf3 29.Kg1 Bc5) 26...Qg2 27.Ke3 Qd2 0–1. jette – pierre, internet, 2010.

4.b5 Ne7 5.c4 (5.Nf3 f6+=) 5...0-0= 6.Nf3 Bc7 (6...e4 7.Ng5 f5 8.d3=) 7.Be2 (7.Ne5 a6+=) 7...d5 (7...e4 8.Nd4 d5=) 8.0-0 (8.Be5 Be5 9.Ne5 dc4 10.bc6=) 8...Bg4?? (8...e4 9.Ne1–/+) 9.Ne1 (better is 9.Ne5!? Be2 10.Qe2+/-) 9...Be6 10.cd5 Nd5 11.bc6 Nc6 12.Nd3 (12.Nc3 Rc8+=) 12...e4 13.Nc5?? (13.Ne1–/+) 13...Re8 (better is 13...Qd6 14.g3 Qc5–+) 14.Ne6+= (14.Nb7? Qb8–+) 14...Re6 (worse is 14...fe6 15.Qc2+=) 15.Bc4 Rh6 16.h3 Qg5 17.Qg4?? (better is 17.f4 Qf5 18.Nc3 Nf4 19.Bf7 Qf7 20.ef4–/+) 17...Qg4–+ 18.hg4 Ndb4 19.Nc3 Ne5 20.Be2 Re8 21.Ne4? Ng4?? 22.Ng3= Ne5 23.a3 Nbc6 24.f3 Nf3?? 25.Rf3+- Ne5 26.Be5 Be5 27.Rc1 Bb2 28.Rb1 Rb6 29.Bc4 Bf6 30.Rb6 ab6 31.Bd5 Ra8 32.e4 Bd4 33.Kh2 Bb2 34.Rf7 Kh8 35.Bb7 Rd8 36.Nf5 g6 37.Ng3 Ba3 38.Bd5 b5 39.Ra7 Bd6 40.Kh3 Rb8 41.Rb7 Rb7 42.Bb7 Kg7 43.d4 Kf7 44.e5 Bb8 45.Bd5 Ke7 46.Ne4 Ba7 47.Bc6 Bd4 48.Bb5 Be5 49.Bc4 h6 50.Kh4 Bg7 51.Ng5?? hg5 52.Kg5+/- Be5 53.g4 ½–½. Valpa – Adamant, playchess.de, 2004.

4.b5 Nf6 5.Nf3 e4 6.Nd4 =.

4.c4 (--> 3.c4 c6 4.e3).

4.c4 Qe7 5.c5 Bc7 6.Nf3 (--> 3.Nf3 Qe7 4.c4 c6 5.c5 Bc7 6.e3).

4.Bc4 Bc7 5.Bb3 d5 6.d3 Nf6 7.h3 Be6 8.Nf3 Nbd7 9.0-0 h6 10.d4 e4–/+ 11.Ne5 Ne5 12.de5 Nd7 13.f4 ef3! 14.Qf3 Be5 15.c3 Nf6 16.Nd2 g5 17.Qe2 g4 18.hg4 Bg4 19.Nf3 Ne4 20.Qd3?? Bf3–+ 21.Rf3 Qh4 22.Rf4 Bf4 23.ef4 Qf2 24.Kh2 Qf4 25.Kh1 Nf2 (26.Kg1 Nd3–+) 0–1. Babichev,Vyacheslav – Wagner,Florian (2000), Nuremberg LGA Cup, 2004.

4.a3 c6 5.Nf3 Nf6 6.d4 (6.Be2 0-0+=) 6...e4 7.Nh4 g6 8.g3 Bc7 9.f3 (9.c4!?=+) 9...d5–/+ 10.f4 (10.Nc3 g5 11.Ng2 ef3 12.Qf3 Bg4–/+) 10...Bg4 11.Be2 Be2 (11...Bh3 12.Nd2–/+) 12.Qe2 Qe6 (12...Nbd7 13.0-0–/+) 13.Nd2 Nbd7 14.c4 0-0 15.0-0 Qg4 16.Qg4=+ Ng4 17.Rac1 Ne3–/+ 18.Rfe1 Nc4–+ 19.Nc4 dc4 20.Re4 b5 21.Nf3 Rfe8 22.Rce1 Re4 23.Re4 Kf8 24.Ng5 h6 25.Nf3? Nf6–+ 26.Re2 Nd5 27.Ne5 Be5 28.de5 c3 29.Bc1 a5 30.e6?? Re8 31.ba5 fe6–+ 32.Re4 Ke7 33.a4 Ra8 34.Ba3 Kf6 35.ab5 Ra5 36.Bf8 0–1. jboger (1985) – gregorgysi (2250), net–chess.com, 2009.

4.a3 Nf6 5.d4 ed4 6.Bd4 Nc6 7.Nf3 (7.Bc3 0-0=) 7...Nd4 8.Nd4 Be5 9.Be2 0-0 10.c3 d5 11.0-0 Bd7 (11...a5 12.b5=+) 12.Nf3 (12.Nd2 a5=+) 12...Bd6 13.c4 (13.Qd3 a5=+) 13...c6 (13...dc4 14.Bc4 b5 15.Bd3-/+) 14.Nc3 (14.c5 Bc7=) 14...Ne4 (14...dc4 15.Bc4 b5 16.Bd3-/+) 15.Rc1 g5 (better 15...a5!? 16.cd5 Nc3 17.Rc3 ab4 18.ab4 Bb4=) 16.cd5+/- Nc3 17.Rc3 g4 (17...a5 18.dc6 Bc6 19.Nd4+=) 18.Nd4 Qe5 (18...a5 19.Bg4 ab4 20.ab4+/-) 19.g3+- f5 (19...cd5 20.Bg4 Be6 21.Be6 fe6 22.Qg4 Kf7 23.Nb5+-) 20.f3 (20.f4 gf3 (20...Qd5?? 21.Bc4 Qc4 22.Rc4+-) 21.Bf3 cd5+-) 20...gf3 (20...cd5 21.fg4 a5 A) 22.Nf5?! Qc3 23.Qd5 Kh8 24.Qd6 Bf5 25.Rf5 Rf5 26.gf5 Qe1 27.Bf1 Qe3 28.Kh1 Qe4 29.Kg1 Qe3 (29...Qf5?? 30.Qd4 Kg8 31.Bc4 Kf8 32.Qh8 Ke7 33.Qa8+-) 30.Kh1 Qe4 31.Kg1 Qe3= (31...Qf5 32.Qd4 Kg8 33.Bc4 Kf8 34.Qh8 Ke7 35.Qa8+-); B) 22.b5+/-) 21.Rf3 (better 21.Bf3!? cd5 22.Qb3+-) 21...cd5+/- 22.Rc1 (22.Bb5 Bb5 23.Nb5 a6 24.Nd6 Qd6+=) 22...a5+= 23.Qb3 (23.Bb5 Bb5 24.Nb5 Be7+=) 23...ab4= 24.ab4 Rf7 (24...Ra4!?=) 25.Rcf1+= h5 (25...Be7 26.Rf4+/-) 26.Bd3 (26.Rf4 Kh7+/-) 26...h4 27.Bf5 (worse 27.Nf5 Bf5 28.Rf5 Qe3 29.R5f2 hg3 30.hg3 Qd4=+ (30...Qg3 31.Rg2 Qg2 32.Kg2 Rg7 33.Kh1+-)) 27...Bf5 (27...hg3 28.Rg3 (28.hg3?? Bf5 29.Nf5 Rf5-+) 28...Rg7 29.Rg7 Kg7 30.Rf4 Ra1 31.Kg2+/-) 28.Rf5 (28.Nf5 Rf6+-) 28...Rf5+/- 29.Rf5 Qe4 ½-½. OnlyPolishOpening (1920) - albertli (1950), lichess.org, 2020.

4.b5 c6 5.a4 (5.Ne2 Bc7 6.Ng3 d5 7.bc6 bc6+=) 5...Nf6= 6.c4 Bc7 7.Nc3 0-0 8.Ba3 (8.Nf3 d6=) 8...d6+= 9.Be2 Nbd7 10.Qc2 Re8 (10...e4 11.Nh3+=) 11.Nf3= e4 12.Nd4 c5 13.Nf5 Qe5 14.Ng3 Pawn e4, live or die! 14...Nf8 (14...Ba5 15.Bb2 Qe6 16.0-0+=) 15.Bb2+= Qe6 16.d3 ed3 17.Qd3 (better is 17.Bd3!? b6 18.Nce4+/-) 17...Ng6 18.Nd5 Ba5 19.Kf1 Ne5 20.Qb3 Nd5 21.cd5 Qg6 22.Rd1 Bd7 (22...Bg4 23.Be5 Re5 24.h4–/+) 23.f3 (23.h4!?+=) 23...Rac8–/+ 24.Be5 (24.Bc3 c4 25.Qa3 Bb6–/+) 24...Re5–+ (worse is 24...de5 25.Kf2=) 25.Bc4 (25.e4 Rce8–+) 25...h5 26.Qd3 Qf6 (26...Qh6 27.f4 Re7 28.Kg1–+) 27.Ne4 (27.h4!?–/+) 27...Qe7–+ 28.Kf2 Re8 (28...Re8 29.Qc2 h4–+) 0–1. Baecklin,Stefan – Eklund,Lg (2275), Swedish Championship Elitserien, 2004.

4.b5 Nf6 5.Nc3 +=.

4.b5 Nf6 5.c4 b6 6.Nf3 c5 (6...0-0 7.d4 e4 8.Nh4=+) 7.Qc2 (7.Nh4 Qe6=) 7...e4 (7...Bb7 8.Qf5 e4 9.Ne5=) 8.Bf6 gf6 9.Ng1 (9.Nh4 Bb7+=) 9...Bb7= 10.Ne2 a6 11.Nbc3 ab5 12.cb5 Be5 13.g3 Ra5 14.a4 d5 15.Bg2 Bc3 16.Nc3 f5 17.Qb2 Qe5 18.Nd1 d4 19.ed4 cd4 20.Ne3+= Qc5? 21.Rc1+- Qe7? 22.Qd4 f6 23.Nf5 Qe5 24.Qe5 fe5 25.Nd6 Ke7 26.Nb7 Ra4 27.0-0 Nd7 28.Rfe1 Nf6 29.Rc7 Ke6 30.Rc6 Kf5 31.Nd6 Kg4 32.Ne4 Rha8 33.Nf6 Kf5+- 34.g4 Kf4 35.Nh5 Kg4 36.Nf6 Kf5 37.Nh7 Ra1 38.Rcc1 R1a2 39.Ba8 Ra8 40.Rc6 Rb8 41.Ra1 Ke4 42.Ra6 Kd5 43.Rab6 Rb6 44.Rb6 Kc5 45.h4 Kb6 46.h5 Kb5 47.h6 Kc4 48.Nf6 Kd3 49.h7 Kd2 50.h8Q e4 51.Ne4 Ke2 52.Qd8 Ke1 53.Qd2# 1–0. Goutioudi,Irini – Papadouraki,M, GRE–ch U14 Girls, 2002.

4.b5 Nf6 5.Nf3 0-0 =.

4.a3 0-0 5.Nc3 Be7 =.

4.a3 0-0 5.Bc4 c6 6.Nf3 Qe7 7.d4 (7.Nc3=) 7...ed4 (7...e4 8.Nfd2=+) 8.Nd4 (8.Qd4 a5 9.ba5 Ra5+=) 8...Bc7 (8...Bb4!? 9.Nd2 Bd2 10.Qd2 d5–/+) 9.Bd3 (9.Nf5 Qe4 10.Qf3 Qf3 (10...Qc4?? 11.Nh6 Kh8 12.Qf6+-) 11.gf3 d5 12.Ng7 Nbd7+/-) 9...d5 10.h3 Ne4 (10...Be5 11.Nd2=) 11.Qh5= Nd7 (better is 11...a5!? 12.b5 Be5=) 12.Nf5+/- (12…Qe6 13.Be4 Qe4 14.Qg5+- (14.Ng7 Qc2 15.Bd4 Ne5 16.Be5 Be5 17.Qe5 Qc1 18.Ke2 Qc4 19.Kd2 Qh4+-; 14.Bg7?! Nb6 15.Bf8 Bf5+=)) 1–0. blackpanther (2410) – gregorgysi (2280), net–chess.com, 2004.

4.a3 0-0 5.Nf3 e4 6.Nd4 Nc6 7.d3 Be5 8.de4 Nd4 9.ed4 Bf4 10.e5 Ne4 11.f3 Qh4 12.Ke2 Qf2 13.Kd3 Qe3 14.Kc4 b5 15.Kd5 Bb7# 0–1. ronnieg (2570) – Posapiano (2375), fics, 2001.

4.a3 0-0 5.Nh3 c6 6.d3 Qe7. ajeffries (2075) – gregorgysi (2250), net–chess.com, 2009.

4.a3 Kf8 5.Nf3 Kg8 (better 5...e4!? 6.Nd4 Be5+=) 6.Ne5 Be5 7.Be5 d6 8.Bb2 Kf8 9.Be2 Ng4?? (9...Kg8 10.0-0+-) 10.0-0 (10.Bg4 Nc6+-) 10...c5?? (better 10...Qh4 11.h3 Nf6+-) 11.Bg4 Bg4 12.Qg4 Rg8 (12...f6 13.Nc3+-) 13.bc5 dc5 14.Qf3 Na6 (14...Nc6 15.d3+-) 15.Qb7 Rb8 16.Qa6 Rb6 (16...Rb2 17.Qa7 Rc2 18.Qb7+-) 17.Qa7 (better 17.Qa5!? Qd6 18.Bc3 Ra6+-) 17...Rb8 (17...Rb2 18.Qc5 Qe7+-) 18.Qc5 (18.Qc5 Qe7 19.Qe5+-) 1-0. Nikolova,Angelika - Nikolov,Nikolay, 32nd Teteven Open, 2018.

4.b5 0-0 5.c4 Re8 6.Nf3 c6 (6...a6 7.Qb3=) 7.a4 (7.d4 e4 8.Nfd2 Bf8=) 7...cb5 (7...e4 8.Ng1=+) 8.ab5= a6 (8...e4 9.Ng5=) 9.Be2 (9.d4 e4 10.Nfd2 Be7+=) 9...b6 (9...e4 10.Nd4=) 10.0-0 h6 (10...e4 11.Nd4=) 11.Qc2 (11.d3 Bb7+/-) 11...Bb7 12.Nc3 e4 13.Nd4 Qc7 (13...Be5 14.ba6 Na6 15.Ncb5+=) 14.h3 Bc5 15.Nf5 d5 16.d4 Bf8 17.c5 Nbd7? 18.c6+- Bc6 19.bc6 Qc6 20.Rac1 Rac8? 21.Qb3 Qe6+/- 22.Ng3 g5?? 23.Nce4 g4?? 24.Nf6+- Nf6 25.Bd3 gh3 26.Bf5 h2 27.Kh2 Ng4 28.Kg1 (28…Rc1 29.Rc1+-) 1–0. FrutiniMalini – Euro, Caissa's Web, 2004.

4.b5 0-0 5.Nf3 e4 6.Nd4 Be5 7.Be2 c5 8.bc6 dc6 9.0-0? (better 9.Qc1=+) 9...c5-+ 10.c3 (10.Ne6 Qd6 (10...Be6?! 11.Be5 Nbd7 12.Bd6=) 11.Be5 Qe5 (11...Qe6 12.Bf6 Qf6 13.Nc3+=) 12.Nf8 Qa1 13.Nh7 Kh7-+) 10...cd4 11.cd4 Bc7 12.Nc3 Nbd7 (12...Qd6 13.g3-+) 13.a4 (13.d3 Re8-+) 13...Nb6 14.Qc2 Nbd5 (14...Bf5!? 15.Ba3 Re8 16.Rfc1-+) 15.Ne4 Ne4 16.Qe4 Nf6 (16...Re8 17.Qf3-+) 17.Qc2 (17.Qh4 Re8-+) 17...Bg4 18.Bg4 Ng4 19.Qe4?? (19.f4 Nf6-+) 19...Nf6 (better 19...Bh2 20.Kh1 Qh4 21.Qg4 Qg4 22.Kh2 Qe2-+) 20.Qf3 Qd5 (20...Qd6 21.g3 Rfc8 22.e4-+) 21.Qh3 (21.Qd5 Nd5 22.Ba3 Rfd8-/+) 21...Ba5 22.Rad1 (22.d3!? Rfc8-+) 22...Rac8 23.Qg3 (23.d3 Qa2 24.Ba1 Qa4-+) 23...Ne4 (23...Rc2 24.Ba3 Ne4 25.Qf3-+) 24.Qf3 Nf6 25.d3?? (25.Qg3 Rc2 26.Ba3-+) 25...Qf3-+ 26.gf3 Rc2 27.Ba1 (27.Rb1 Rfc8-+) 27...Ra2 28.d5 (28.Rb1 b6-+) 28...Ra4 (better 28...Nd5 29.e4 Nf4-+) 29.Bf6 gf6 30.e4 Rd8 31.Kg2 Bb6 32.Rg1 Ra2 33.Rgf1 Kh8 34.Kg3 (34.f4 Ra3-+) 34...Bc7 (34...Bf2!? 35.Kf4-+) 35.f4 Rg8 36.Kf3 Bb6 37.Ra1 Ra1 (37...Rc2 38.Rac1 Rgc8 39.Rc2 Rc2 40.Kg4-+) 38.Ra1 Rc8 39.Rf1 (39.Ra2 Kg7-+) 39...Kg8 40.Rg1 Kf8 41.Rf1 (41.Re1 Rc2 42.Rf1 Ke7-+) 41...Rc3 42.Ke2 a5 (better 42...Rc2 43.Kf3-+) 43.h4? (43.Rb1 Bc5 44.Rb7 Rc2 45.Kf3 Rf2 46.Kg3 Rd2 47.Rb8 Kg7-+) 43...a4 (43...Rc2 44.Kd1 Ra2 45.d6-+) 44.Rd1 (44.Ra1 a3-+) 44...a3 (44...Rc2 45.Rd2 Rd2 46.Kd2 Bf2 47.h5-+) 45.Ra1 Bc5 46.Kd2 Rb3 0-1. brucepeng (1950) - sergeybasov1957 (1975), lichess.org, 2020.

4.b5 a6 5.a4 0-0 6.c4 (6.Qf3=) 6...Bb4 (better is 6...Re8!?=+) 7.Be5+= d6 8.Bb2 Bf5 (8...Re8 9.Nf3=) 9.Nc3 (9.Qf3 Be4 10.Bf6 Qf6 11.Qf6 gf6 12.Ne2+/-) 9...b6? (9...Nbd7 10.Qf3 Bg6 11.Nd5 (11.Qb7? Bc3 12.Bc3 Be4 13.Qa6 Ra6 14.ba6 Nc5–+) 11...Nd5 12.cd5 ab5 13.Bb5+=) 10.Qb3 a5 11.Ba3 Ba3 12.Qa3 Nbd7 13.g3 Ne5 14.d4 Ng6 15.Bg2+/- Qe7 16.Ba8+- Ra8 17.Nge2 Ne4 18.Nd5 Qd7 19.f3 Ng5 20.Nef4?? Nf4 21.Nf4 Nf3+= 22.Kf2 Nd2 23.Rhc1 Qe7 24.Ke2 Ne4 25.Ra2 Bg4 26.Kf1 Qf6 27.Qd3 Re8 28.Kg2 Qf5 29.h3+- Bh5 30.g4 Bg4 31.hg4 Qg4 32.Kf1?? Qf3?? 33.Ke1?? Ng3? 34.Kd2 Qf2 35.Ne2 Ne4 36.Kc2 Ng5? 37.Kb1 Re3 38.Nc3?? Qa2!!–+ 39.Na2 Rd3 40.Re1 Kf8 41.d5 Rd4 42.Rc1 ½–½. Dilz,Jasmin – Thewes,Anna Christina, GER–ch U12, 2005.

4.b5 c5 5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 0-0 9.d3 Qa5 (9...Bc7 10.Nf3 Re8 11.b6 Bb6 12.Be5=) 10.Nd2 e4? (10...Re8!?=) 11.f3 (better is 11.Bf6!? gf6 12.Qg4 Kh8 13.Qe4 Qa1 14.Ke2+-) 11...ef3+= 12.Ngf3 (better is 12.Bf6 fg2 13.Bg2 gf6 14.Qh5+/-) 12...Ng4+= 13.e4? (13.Ke2 Re8 14.e4+=) 13...Bf4?? (13...Ne3 14.Qc1 Qa1 15.Qa1 Nc2 16.Kd1 Na1 17.Kc1–/+) 14.g3?? (better is 14.Qc1=) 14...Bd2–+ 15.Nd2 d6?? (better is 15...Ne3 16.Qc1 Qa1 17.Qa1 Nc2 18.Kd1 Na1=) 16.Qc1= Qd8 17.Bg2 Qg5 18.0-0 Qh5?? 19.h4 Ne3= 20.Bf3?? Qh6?? 21.Re1+= Bg4? 22.Bg4?? Ng4= 23.Nf3 Qg6 24.Qf4 f6?? 25.Qd6+- Ne5? 26.Ne5?? Qg3= 27.Kf1 fe5 28.Ke2 Qh4 29.Qc5 Nd7 30.Qd5 Rf7 31.Rf1 Qg4 32.Ke1 Qg3 33.Ke2?? Qg2–+ 34.Ke1 Qf1 (34...Qf1 35.Kd2 Kh8 36.Qf7 Qf7–+) 0–1. Valpa – Innessa, playchess.de, 2004.

4.b5 c6 5.bc6 (5.Nf3 e4 6.Ng5 Qe7=) 5...Nc6 (5...dc6 6.d3–/+) 6.Ne2 b6 7.Nec3 a6 8.Be2 b5 9.0-0 Qa5 (9...0-0 10.Bf3=+) 10.d3 b4 (10...Be7 11.f4=) 11.Ne4 Be7 12.Ng3 (12.a3 Ne4 13.de4 Bb7=) 12...d5=+ 13.c3 Rb8 14.cb4 Qb4 15.Ba3 Qb6 16.Be7 Ke7 17.Qa4 Rd8 18.Nc3 Qc7 19.Qh4 Rh8?? 20.Nd5+- (20…Kd8 21.Nc7 Kc7 22.Rfc1+-) 1–0. pinecrest1981 – Prima, Live Game Caissa's Web, 2007.

4.c4 Bb4!? 5.a3 Ba5 =+.

4.c4 b6 5.b5 0-0 6.Nf3 (6.Nc3 Bb7=) 6...Re8 (6...e4 7.Nh4=+) 7.Be2 (7.Nc3 e4 8.Nd4 Be5=) 7...c6 (7...e4!? 8.Nd4 a6=) 8.0-0 cb5 (8...e4 9.Nd4+=) 9.cb5+- e4 10.Nd4 Be5 11.Qc2 (11.Nc3 d5+-) 11...Bd4 (11...a6!?+=) 12.Bd4+- d5 13.d3 (13.Rc1 Be6+-) 13...Qd6 (13...Bf5+-) 14.Qc3 (better 14.de4 de4 15.Nd2+-) 14...Bg4= 15.Bg4 (15.Qd2 Nbd7=) 15...Ng4=+ 16.g3 Qh6 17.h4 Nd7 18.Kg2 (18.de4 de4 19.Nd2=+) 18...Re6 (better 18...Rac8!? 19.Qb3 Nde5 20.de4 de4–/+) 19.de4= de4 (worse 19...Re4 20.Qb3 Nc5 21.Qd5+-) 20.Nd2 Rg6 (20...Ndf6 21.Rac1=) 21.Rh1 (21.Ne4 Qh5 22.Qb3 Re8+-) 21...f5?? (21...Qh5 22.Ne4 Re8 23.Qc7=) 22.f3 (better 22.Qc4!? Re6 23.Qd5+-) 22...ef3 (22...Ngf6!? 23.Raf1 Qh5+=) 23.Nf3+- Re8 24.Rae1 (better 24.Ng5 Nge5 25.Rac1+-) 24...Rge6? (better 24...Qh5!?+=) 25.Qb3 (25.Ng5 Ndf6 26.Qc4 Ne4 27.Ne6 Qe6 28.Qe6 Re6+-) 25...Kh8? (better 25...Nc5 26.Bc5 bc5+-) 26.Ng5 Qg6 (26...R6e7 27.Nf7 Rf7 28.Qf7+-) 27.Ne6 Re6 28.Qc3 (28.Rhf1 Rd6 29.Qc2 Qe8+-) 28...Qf7 (better 28...Re8+-) 29.Rhf1 Re4 30.Qc8 Re8 31.Qb7?? (better 31.Qc2+-) 31...Qa2–+ 32.Kf3 Nh2 33.Kf4 Nf1 (better 33...Re4 34.Qe4 fe4–+) 34.Rf1 Qf7 (better 34...Ne5 35.Be5 Qc4 36.e4 Qf1 37.Kg5 Qc1 38.Bf4 Qd1 39.ef5 h6 40.Kg6 Rg8–+) 35.Rc1?? (better 35.Rd1 Kg8 36.Qh1–+) 35...Re4 36.Kf3 (36.Qe4 fe4 37.Ke4–+) 36...Ne5 37.Be5 Qb7 (37...Qb7 38.Rc7 Rf4 (38...Re5?! 39.Rb7 h5 40.Ra7=) 39.Ke2 Qg2 40.Kd3 Qf1 41.Kd2 Qf2 42.Kd3 Rc4 43.Kc4 Qa2 44.Kc3 Kg8 45.Rg7 Kf8–/+) 0–1. Genne,Rene (1725) – Sandjivy,Jean Marc, 7th Saint Denis REU, Open, 2015.

4.c4 c6 5.c5 Bc7 6.Nf3 Qe7 7.Na3 (7.Nc3!?=) 7...e4=+ 8.Nd4 d5 9.Rc1 0-0 10.Be2 Nbd7 11.f4 (11.Nf5 Qe8=+) 11...ef3–/+ 12.Nf3 (12.gf3 Ne5 13.Qb3 Bd7=+) 12...Ne5 (12...Ne4 13.Bd4–/+) 13.0-0 (13.Be5 Be5 14.Ne5 Qe5=+) 13...Nfg4 14.g3 Nf3 15.Rf3 Nh2! 16.Rf4?? Bf4–+ 17.ef4 Qe6 18.Kh2 Qh3 19.Kg1 Qg3 20.Kh1 Bf5 21.Bf3 Rae8 22.Qf1 Qh4 23.Kg1 Re6 24.Bg2 Rfe8 25.Be5 f6 26.Nb5 fe5 27.Nd6 Rf8 28.Qf2 Qf2 29.Kf2 Bg4 30.b5 ef4 31.Nb7 Re2 32.Kg1 f3 33.Bf1 Re1! 0–1. Kordonowski,Frank – Becker,Marcel (2295), Essen Easter op, 2004.

4.Bd3 0-0 5.e4 (5.Qf3 Re8 6.Qf5 Be7=+) 5...Re8 (5...Bb4!? 6.Be5 Re8–/+) 6.b5 (6.a3 c5=+) 6...c6 (6...Bc5 7.Nc3=+) 7.bc6 (7.g4 Re7=) 7...Nc6 8.Ba3 Ba3–/+ 9.Na3 a6 10.Ne2 d5 11.ed5 Qd5 12.0-0 Bg4 13.f3? Bh5?? 14.Bc4?? Qc5–+ 15.Kh1 Qa3 16.Ng3 Bg6 17.d3 Nd4 18.Ne4 Ne4 19.fe4 Rec8 20.Bd5 Rab8 21.c4 b5 22.cb5 ab5 23.Qg4 Rc7 24.h3 Qd3 25.Rad1 Qa3 26.Rf7 Bf7 27.Bf7 Rf7 28.Qg3 Qg3 (29.a3 Rf2 30.Rg1 Nf3 31.gf3 Qh3) 0–1. pinecrest1981 – Prima, Live Game Caissa's Web, 2007.

4.Bd3 e4 5.Bb5 –/+.

4.a3 Ba5 5.Be5 (5.Nf3 d6 6.Nc3 Nf6 7.Bc4 Nbd7 8.Qe2 Nc5 9.d3; 5.Bc4 Nf6 6.Nf3 0-0 7.Qe2 d6 8.0-0 Nc6 9.Nc3; 5.Nc3 Nf6 6.Bd3 d6 7.Nf3 Na6 8.0-0 0-0 9.Qe2) 5...Nf6 6.Qf3 0-0 7.Nc3 Re8 8.Bf6 Qf6 9.Qf6.

4.a3 Be7 5.Nf3 d6 6.Bc4 Nf6 7.Nc3 0-0 8.0-0 Nc6 9.Qe2.

4.Be5 Nf6 5.Qf3 Be7 6.Bb2 d6 7.Bc4 0-0 8.Ne2 Nc6 =+.

4.Nf3 Qe7 5.b5 Nf6 6.c4 Bc7 7.Be2 0-0 8.0-0 a6 9.Nc3 ab5=+ 10.cb5 d5 11.d4 ed4–/+ 12.Qd4 de4 13.b6?? ef3–+ 14.Bf3 Be5 15.Qe3 Re8 16.Qd2 Be6 17.Qe2 Bd4 18.Rfe1 Bb6 19.Ne4 Nbd7 20.Ng5 Nc5 21.Ba3 Ra3 0–1. gtate (1970) – gregorgysi (2120), net–chess.com, 2006.

4.Qg4 Bb4?? 5.Qg7 Qf6 6.Be5 Qg7 7.Bg7 +-.

4.Qg4 g6 5.Nf3 Qe7 6.a4 Bc7 7.Bc4 Nf6 8.Qh4 d6 9.0-0 Be6 10.Be6 Qe6 11.d4 Nbd7 12.Nbd2 0-0 13.Ng5 h5?? 14.Ne6+- (14...fe6 15.de5 Ne5 16.Be5 de5 17.Nf3+-) 1–0. mtrold1 – opponent, internet, 2001.

4.a3 c6 5.Nc3 Nf6 6.Nf3 Bc7 7.Bc4 0-0 8.Qe2 d6 9.0-0-0 b5 10.Bb3 a5 11.ba5 Ra5 12.Qe3 Nbd7 13.d4 Bb6 14.Qd3 ed4 15.Nd4 Bb7 16.Nf5 Qd8 17.Nd6 Qc7 18.Nb7 Qb7 19.f4 Nc5 20.Qf3 Nb3 21.cb3 Raa8 22.e5 Nd5 23.Nd5 cd5 24.Qd5 Rfc8 25.Kb1 Qa6 26.f5 Rc5 27.Qe4 b4 28.Qb4 Rb5 29.Qa4 Qa4 30.ba4 Ra4 31.Ka2 Rf4 32.Rhf1 Rf1 33.Rf1 1–0. smoothoperator (2100) – gregorgysi (2575), net–chess.com, 2014.

4.a3 Nf6 =.

4.Nf3 Bb4 5.Be5 f6 (5...f5 6.Nc3 (< 6.ef5 d6–/+) 6...Bc3 7.Bc3 (7.dc3?? fe4 8.Qe2 ef3 9.gf3 Nf6–+) 7...fe4 8.Nd4=) 6.Bc7 Qe4 (6...d5 7.Bb5 Nc6 8.c3 de4 9.Nd4 Qc7 10.Bc6 bc6 11.cb4=) 7.Be2+= Nc6 8.0-0 Nd4 9.Re1 Qc2?? (better is 9...Be7 10.Nd4 Qd4+-) 10.Bd3+- Ne7 11.Bc2 (11.Nd4?! Qd3 12.Nc2 Bd6 13.Bd6 Qd6=; worse is 11.Qc2 Nc2 12.Bc2 d5+-) 11...Nf3 (11...Ne6 12.Bg3+-) 12.gf3 (12.Qf3 f5 13.Qf5 a6+-) 12...0-0 (12...Bc5 13.a3 Kf7 14.Qe2+-) 13.Nc3 (better is 13.a3!? Bc5 14.d4 Bd4 15.Qd4 Ng6+-) 13...Bc5 (13...Nc6 14.Nd5 Ba3 15.Qb1+-) 14.d4 Bb4 15.Qd3 Nc6 16.Qc4 (16.Qh7 Kf7 17.Bg6) 16...Kh8+- 17.d5 Bc3 18.Qc3 Ne5 19.f4 Ng4 20.h3 Nh6 21.Re7 d6 (21...Ng8 22.Re3 b6 23.Bd6+-) 22.Qd3 (22.Qd3 Bf5 23.Qg3+-) 1–0. ida1 – hegarpgn, Live Game Caissa's Web, 2005.

4.a3!?= 0-0 5.Qf3 Nc6 6.Ne2 a6 7.Nbc3 Be7 8.Nd5 d6 =.

4.a3!?= a5 5.b5 Ne4 6.Qe2 Nc5 7.d4 Na4 8.de5 0-0 =.

4.a3 a5= 5.Nc3 ab4 6.Nb5 Ne4 7.Qg4 ba3 8.Nd6 cd6 9.Ra3.

4.a3 a5= 5.Nf3 ab4 6.ab4 Ra1 7.Ba1 0-0 8.Bd3 Bb4 9.Ne5.

4.a3 Ne4 5.Bd3 Nf6 6.Nc3 0-0 7.Nf3 Re8 8.Ng5 Be7 9.f4.

4.a3!?= Ne4 5.Qe2 Ng5 6.d4 Be7 7.de5 Ne6 8.Nf3 0-0 =.

4.a3 Ne4 5.Nf3 0-0 6.Bd3 Nf6 7.Nc3 Re8 8.Ne4 Be7 9.c4.

4.d3 0-0 5.Nf3 Qe7 6.c3 c6 7.Be2 Bc7 8.Nbd2 d5 9.Qb3 Be6=+ 10.Ng5 Nbd7 11.0-0 Rad8 12.Bf3 h6 13.Ne6= Qe6 14.ed5 cd5 15.c4 b6?? 16.cd5+- (16…Qe7 17.Nc4+-) 1–0. jacksrking – gregorgysi (2250), net–chess.com, 2009.

4.d3 Bb4–/+ 5.Bc3 Bc3–+ 6.Nc3 d5 7.ed5 Nd5 8.Nf3?? (better is 8.Nd5 Qd5 9.Nf3–+) 8...Nc3 9.Ne5 (9.Qd2 Nd5 10.c4–+) 9…Nd1 (10.Rd1 Qe7–+) 0–1. guest534 – guest489, ICC, 1999.

4.d3 Bb4–/+ 5.Nd2 Nc6–/+ 6.Ngf3 Qe7 7.a3 Bc5 8.Be2 0-0 –/+.

4.d3 Bb4 5.Nd2 d6 6.Ngf3 Bg4 (6...0-0 7.c3 Ba5 8.Be2–/+) 7.Be2 Nc6 8.0-0 0-0 9.a3 (9.Nb3 Qd7–/+) 9...Ba5 (9...Bd2 10.Nd2 Be2 11.Qe2–/+) 10.Nc4 Bb6 (10...b5 11.Na5 Na5 12.Nd2 Be2 13.Qe2–/+) 11.c3 (11.Nb6 ab6 12.Ne5 Be2 (12...Ne5?! 13.Be5 de5 14.Bg4+=; 12...de5?! 13.Bg4 Qd6 14.Bf5=) 13.Nc6 Bd1 (13...bc6?! 14.Qe2 Re8 15.Qf3=) 14.Nd8 Bc2 (worse is 14...Rfd8 15.Rfd1 Nh5 16.Rab1+=) 15.Bf6 gf6 16.Nb7 Bd3–+) 11...Ne7 (11...Re8 12.h3 Bh5 13.Nb6 ab6 14.Qc2–/+) 12.Nb6 ab6 13.h3 Be6 14.Ng5 h6 15.Ne6 fe6 16.Qd2 (16.Qb3 d5–/+) 16...c5 (16...Ng6 17.Qe3–/+) 17.Qd1 (17.f4 ef4 18.Qf4 Qd7+=) 17...Nc6 (17...b5 18.Qb3 Qd7 19.Bc1–/+) 18.f4+= ef4 19.Rf4 e5 (19...Qc7 20.Qd2+=) 20.Rf5 Ne7 21.Qb3 (21.Rf2 Qc7+=) 21...d5 (better is 21...c4 22.Qc4 d5–/+) 22.Re5= Nc6 (22...Qd6 23.d4 Ng6 24.Rf5=) 23.Rf5+= Na5 (23...c4 24.dc4 de4 25.Rd1+=) 24.Qa2 Kh8 (24...c4 25.e5 Qe7 26.Raf1+= (worse is 26.ef6 Qe2 27.d4 Rf6 28.Rf6 gf6+=)) 25.Raf1 (25.ed5!? Re8 26.Bc1+/-) 25...de4= 26.de4 Qd2 27.e5 (27.R5f2 Qe3 28.Bc1 Qc3+=) 27...Nd7 (27...Qe3 28.R5f2 Qe5 29.c4=) 28.Rf8 Nf8 29.Bh5 (29.Bb5 Ng6+=) 29...Qe3 30.Kh1 Qe5 31.Bg4 h5 (31...c4 32.Qb1+=) 32.Bf3 (32.c4 Qe4 33.Bh5 Nc4= (33...Qc4 34.Qb1 Qh4 35.Rf7+-)) 32...Ng6 (32...c4 33.Qb1=) 33.c4 (33.Qf7 Qf6 34.Qf6 gf6 35.Bh5 Kg7+=) 33...Qe7 (33...Qg5 34.Bd5+=) 34.Qb1 (better is 34.Bh5 Qe4 35.Qa1 Nc4 36.Bg7 Kh7 37.Rf7+/-) 34...Ne5? (better is 34...Nf4 35.g3 Qe6 36.gf4 Qh3 37.Kg1 Qg3 38.Bg2 Nc4+/-) 35.Re1 Nac4 36.Qf5 (better is 36.Be5 Ne5 37.Qa1+-) 36...Rf8?? (better is 36...Qf7 37.Re5 Ne5 38.Qe5 Re8+/-) 37.Qh5+- Kg8 38.Bd5 Rf7 (38...Qf7 39.Re5 (39.Be5 Qd5 40.a4 Rf7–/+) 39...Ne5 40.Qe5+-) 39.Bc4 (39.Bc4 Nc4 40.Re7 Re7 41.Qd5 Kf8 42.Qc4+-) 1–0. Hilbert,Stephan J – Barradas,Anderson, FICGS, 2016.

4.f3 a6 5.Bd3 0-0 6.Ne2 Nc6 7.a3 b6 8.0-0 Bb7 9.c4 Be7 10.b5 ab5 11.cb5 Na5 12.a4 (better is 12.Be5!? d5 13.Nbc3+=) 12...d5 13.Qc2 d4 14.h3 Bc8 15.Na3 Bd7 16.Nc4 Nb7?? (better is 16...Nc4 17.Bc4 c5=) 17.Ne5+- Bc5 18.Bd4 (18.Nd4?! Bd4 19.Bd4 Bb5+/-) 18...Bb4 (better is 18...Re8 19.Bc5 Nc5 20.Nd7 Qd7+-) 19.Nd7 Qd7 20.Bc3 Bc5 21.Kh1 c6 22.Bf6 gf6 23.Nf4 Na5 24.bc6 Nc6 25.Bb5 Qc7 26.Nd5 Qb7 27.Rfd1 Nd4 28.Qc4 Rac8? 29.d3 Ne2 30.Rd2 Ng3+/- 31.Kh2 Nf1? 32.Rf1+- Bd6 33.Kh1 Rc4 34.dc4 Rd8 35.Ra1 Be5 36.Rad1 Kh8 37.Nb4 Rg8 38.Rd7 Qc8 39.Na6?? Qf8+/- 40.Rb7?? Qg7 41.Nc7?? Qg2# 0–1. Neumann,Frank – Mori,Roberto, RN–2011–0-00435, 2011.

4.Qf3 0-0 5.a3 c6 6.c4 c5 (6...Bc7!?+=) 7.bc5= Bc5 (7...Bc7!?=) 8.Be5+/- b6? (better is 8...Re8 9.d4 Be7+/-) 9.d4+- Be7 10.Bf6 Bf6 11.e5 Bg5 (11...Be5 12.de5 Qe7+-) 12.Qa8 Nc6 13.Nc3 Qe7 14.Nd5 Qe6 15.Nf3 Ba6 (15...Nd4 16.Nd4 Qe5 17.Be2 Qd4+-) 16.Ng5 Ra8 (16...Qh6 17.Ne7! Ne7 18.Qa7+-) 17.Ne6 de6 18.Nc7 Nd4 (18...Rd8 19.Na6 Rd4 20.Rd1 Rd1 21.Kd1 Ne5 22.c5+-) 19.0-0-0 Nb3 (19...Rd8 20.Na6 f6 21.Bd3+-) 20.Kc2 Bc4 (20...Rc8 21.Kb3 Bb7 22.Nb5+-) 21.Na8 Bd5 22.Rd5! ed5 (22...ed5 23.Kb3 Remove defender) 23.Kb3 Kf8 24.Bb5 Ke7 25.Nc7 f6 26.e6 Kd6 27.Re1 Kc7 (27...a6 28.e7 ab5 29.Nb5 Kc6 30.e8Q Kb7 31.Re7 Ka6 32.Ra7) 28.e7 d4 (28...a6 29.e8Q ab5 30.Rc1 Kb7 31.Qc8 Ka7 32.Rc7) 29.e8Q d3 (29...h6 30.Qc6 Kd8 31.Re8) 30.Qc6 Kb8 (30...Kd8 31.Re8) 31.Re8 1–0. aboveoeuf (2360) – white2, gameknot.com, 2013.

4.Qf3 a6 5.a3 Nc6 6.Ne2 Be7 7.d4 d6 8.d5 Nb8 =.

4.Qf3 Bb4 5.Be5 Be7 6.Bc4 d6 7.Bf6 Bf6 8.c3 0-0 =.

4.Qf3 Nc6 5.a3 a5 6.c3 ab4 7.ab4 Ra1 8.Ba1 Be7 =.

4.Qf3 Nc6 5.Bb5 (5.a3 a5=) 5...0-0 (5...Nb4 6.Ba4–/+) 6.Bc6 bc6 (6...dc6 7.Ne2 Re8–/+ (7...Bb4?! 8.Be5 Ng4 9.Bf4=)) 7.Ne2= Ba6 (7...Re8 8.a3=) 8.0-0 (8.a3 Be2 9.Qe2 a5 10.ba5 Ra5=) 8...Bb4=+ 9.c3 (9.Be5!? Re8 10.Bf6 Be2 11.Bd8 Bf3 12.gf3 Rad8 13.c3=+) 9...Bc5–/+ 10.Re1 d6 (10...d5 11.Ng3–/+) 11.d4 (11.Ba3 Bb6–/+) 11...Bb6 (11...Rb8!?–/+) 12.Ng3 Qe7 (12...Nd7 13.Qg4 Bc8 14.Nf5=+) 13.Nf5=+ Qe6 14.Qg3 g6 15.Nh6 Kh8 16.de5 de5 17.Nd2 Ng8 18.Ng4 Rad8 19.Nf3 Increases the pressure on e5 19...f6 20.h3 h5 21.Ne3 Ne7 22.Ba3 Rg8 23.Be7 Qe7 24.Rad1 Rd1 25.Nd1 Kh7 26.Ne3 Bd3 27.Nd2 Qe6 28.a3 Ba5 29.Nd1 Bb5 30.Qe3 Bb6 31.Qf3 Kh6 32.c4=+ Ba6 33.Qb3 Rb8 34.Qc2 Ba5 35.Re3 c5 36.Nb3 Bb6 37.Rc3 c6 38.a4 Qe7 39.Ne3 Bc8 40.Qd2 Kg7 41.Rd3 White intends a5 41...Be6 42.Rd6 Rd8 43.Rd8= Bd8 44.Qc3 Qd6 45.a5 Be7 46.a6 Qb8 47.Qa5? Bc8?? 48.Nc5= Bc5 49.Qc5+/- Ba6 50.Qe7 Kg8 51.Qf6 Qe8 52.h4 Bb7 53.c5 Qf7 54.Qe5+- a6 55.Qc3 Qe7 56.Qc4 Qf7 57.Qf7 Kf7 58.f4 a5 59.Nc4 a4 60.Kf2 Ba6 61.Na3 Kf6 62.Ke3 Ke6 63.Kd4 Bf1 64.g3 Bh3 65.Nc2 Bg4 66.Nb4 Kd7 67.Ke5 a3 68.Kf6 Be6 69.Nc2 a2 70.Na1 Bg4 71.Kg6 Bd1 72.f5 Bf3 73.e5 Bg4 74.f6 Ke8 75.Kg7 Be6 76.Kh6 Bg4 77.e6! Be6 78.Kh5 Kf7 79.Kg5 Bd5 80.Kf5 Be6+/- 81.Ke5 Bd5? 82.g4 Bf3 83.g5 Bg4 84.Kd4 Bf3? 85.Kc3 Bg4 86.Kb2 Be6 87.Nc2 Kg6 88.Nb4 Bd7 89.Na2 Be8 90.Kc3 Kh5 91.Nb4 Kh4 92.Nc6! Kg5 93.Kd4 Kf6 94.Kd5 Bh5 95.Kd6 Bf3 96.Nb4 Ba8 97.Nd5 Kf7 98.Nb6 Bb7 99.Kc7 Be4 100.Nc8 Ke6+/- 101.Nd6 Bf3 102.Nb5 ½–½. Steve20 – Nexxus6, ChessWorld.net, 2007.

4.Qf3 Qe7 5.a3 a5 6.b5 Bc5 7.Bc4 d6 8.Nc3 Nbd7 =.

4.Qf3 Be7 5.Be5 Nc6 6.d4 Nb4 7.Na3 d5 8.Bf6 Bf6 =.

4.Nf3 0-0=+ 5.a3 Re8 6.d3 Nc6 7.Nbd2 a5 8.b5 Nd4 9.Nd4+= ed4 10.Bd4 Be5 11.Nf3 Bd4= 12.Nd4 c5 13.Nf5 d5=+ 14.Qf3?? de4–+ 15.de4 Bf5 16.Qf5 Qd4 17.f3 Qa1 18.Kf2 Qd4 19.Kg3 Qe5 20.Kf2 Qf5 21.ef5 Rad8 22.Bd3 b6 23.Re1 Re1 24.Ke1 Nd5 25.Kd2 Nf4 26.g4 Nd3 27.cd3 Rd4 28.h4 f6 29.h5 h6 30.Ke3 Ra4 31.f4 Ra3 32.Ke4 Rb3 33.Kd5 Rb5 34.Ke6 Rb4 35.g5 hg5 36.fg5 fg5 37.f6 Rf4 38.fg7 Kg7 39.Ke5 Kh6 40.Kd5 Rd4 41.Kc6 Rb4 42.Kd5 Kh5 0–1. Eddershaw,J – Hanson,John, Brampton op, 2000.

4.Nf3 0-0 5.Qe2 Bb4 6.Ne5 Re8 7.Qc4 Qe7 8.Be2 Na6 –/+.

4.Nf3 Bb4 5.a3 Bc5 6.Be5 Nc6 7.Bf6 Qf6 8.Nc3 0-0 9.Bd3.

4.Nf3 Ne4 5.Qe2 Ng5 6.Ne5 0-0 7.f4 Re8 8.b5 Ne6 =+.

4.Nf3 Qe7 5.a3 0-0 6.Nc3 a6 7.Be2 b5 8.0-0 Bb7 9.d4 Ne4?? (better is 9...ed4 10.Nd5 Nd5 11.ed5 Qe4= (11...Bd5? 12.Qd4 Bh2 13.Kh2 Qd6 14.Kg1+-)) 10.Ne4+- Be4 11.de5 (11.Ne5?! Nc6 12.f4 Be5 13.fe5 f6 14.ef6 Rf6=) 11...Bb4 12.ab4 Nc6 13.c3 Ne5 14.Ne5 Qe5 15.Qd7 Rad8 16.Qg4 Rd2= 17.Rab1?? Bb1–+ 18.Rb1 Re2 19.h3 Re1 20.Re1 Qe1 21.Kh2 Qf2 22.Bc1 Kh8 23.Bf4 c6 24.Be5 f6 25.Bd6 Rd8 26.c4 Qd2 27.Bc7 Re8 28.Bf4 Qd4 29.cb5 cb5 30.Qg3 Qb4 31.Bd6 Qc4 32.Ba3 b4 33.Bc1 Qc1 0–1. Neumann,Frank – Bortnicker,Justin, RN–2011–0-00430, 2011.

4.Nf3 Qe7 5.a3 a5 6.Nc3 ab4 7.ab4 Ra1 8.Qa1 Nc6= (8...Bb4 9.Qa8 0-0 10.Qb8+=).

4.Nf3 Qe7 5.Nc3 c6 6.Bc4 Bb4= 7.Ng5? 0-0 8.a3 Ba5 9.d4? h6 10.Bf7 Rf7 11.Nf7 Kf7 12.0-0 d6 13.d5 Bg4 14.Qb1 Bb6 15.h3 Bh5 16.g4 Bg6 17.Qd1 Be4 18.Ne4 Ne4 19.Qf3 Nf6 20.h4 Kg8 21.dc6 Nc6 22.g5 Nh7 23.Qf5 Rf8 24.Qg6 hg5 25.Rae1 Qf6 26.Qf6 gf6 27.Re4 f5 28.Re2 gh4 29.Kg2 Ng5 30.Rd1 Bc5 31.Rh1 h3 32.Kh2 Kf7 33.Rg1 Rg8 34.f4 ef4 35.Bc1 Nf3 36.Kh1 Rg1# 0–1. mduerr (1700) – gregorgysi (2250), net–chess.com, 2009.

4.a3 a6 5.e3 (5.c4 Qf6+=) 5...f6 (5...Nf6 6.Be2=) 6.c4 (6.d4 ed4 7.ed4 Qe7 8.Be2 Qf7+/-) 6...e4 (6...Nh6 7.Bd3+=) 7.Nh4 (7.Nd4 Nd4 8.Bd4 Qe7+=) 7...Nge7 (7...Nh6 8.Qh5 Nf7 9.Qd5+=) 8.Qg4+/- 0-0 9.Qe4 f5 10.Qc2 f4 (10...Qe8 11.c5 Be5 12.d4+-) 11.c5 (11.Qe4 fe3 12.de3 Nb4 13.ab4 Bb4 14.Bc3 Bc3 15.Nc3 d6+-) 11...Be5+/- 12.d4 (12.Be5 Ne5 13.d4 Nf7+/-) 12...Bf6 13.Bc4 (13.Nf3 Kh8+/-) 13...Kh8 14.Nf3 fe3 (14...d5 15.Bd3+/-) 15.fe3 Ng6 (15...d5!? 16.cd6 Qd6+/-) 16.0-0+- Bh4 (better is 16...d5!? 17.cd6! cd6+-) 17.d5 Nce7 18.Nh4 (18.Nbd2 Bf6 19.Bf6 Rf6+-) 18...Nh4 (18...Rf1 19.Bf1 Nh4 20.Qe4+-) 19.Qc3 (19.Nd2 d6+-) 19...Rf1 20.Bf1 Nef5? (20...Qf8+-) 21.e4 1–0. Wall,Bill – Guest7644, internet, 2005.

4.a3 Nf6 5.b5 e4 6.bc6 ef3 7.cb7 Bb7 8.ef3 =.

4.b5+/- Na5 5.Ne5 Be5 6.Be5 d6 7.Bg7 1–0. Wall,Bill – Surfers2, Microsoft Gaming Zone, 1999.

4.b5+/- Nb8 5.Ne5 Nf6 6.e3 +/-.

4.b5+/- Nd4 5.Nd4 ed4 6.Bd4 Nf6 7.Nc3 0-0 8.e3 Qe7 9.Qf3 Be5 10.Be5 Qe5 11.Qg3 Qc5 12.Be2 b6 13.Bf3 d5 14.0-0 Bb7 15.a4 Rad8 16.Ne2 Ne4 17.Be4 de4 18.Nd4 Qe7 19.a5 Rd6? 20.Nf5+- Qf6 21.Nd6 cd6 22.d3 d5 23.Qc7 Bc8 24.de4 de4 25.Qa7 ba5 26.c4 Qg5 27.f4 ef3 28.Rf3 h5 29.Ra5 h4 30.b6 Qe7 31.Qe7 (31…f6 32.Ra7 Bb7 33.Qb7 Rf7 34.Qf7 Kh7 35.Qg7#) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.b5+/- Nd4 5.Nd4 ed4 6.Bd4 Nf6 7.e3 0-0 8.Nc3 c6 (8...Be7 9.Bd3+/-) 9.Bd3 a6 (9...Be7 10.0-0+/-) 10.ba6 ba6 11.Qf3 Bc7 (11...Be7 12.0-0+/-) 12.Qf5 (better is 12.Bf6 Qf6 13.Qf6 gf6 14.f4+-) 12...d5? (better is 12...Re8+-) 13.Bf6 Bf5 14.Bd8 Bd3 15.Bc7 (15.cd3?! Rfd8 16.d4 Rab8+=) 15...Bc2 16.d4 Bd3 (16...Bf5 17.Rc1+-) 17.Kd2 Bc4 (17...Bf5 18.Rhc1+-) 18.Rab1 Rfc8 (18...h6 19.Rb7+-) 19.Rb7 Bb5 (19...a5 20.Rhb1+-) 20.Rb1 h6 21.a4 Bc4 22.R1b6 Bf1 23.g4 Bg2 24.Rc6 Re8 (24...Bf3 25.h3+-) 25.Ke2 (25.Rc5 Bf3+-) 25...Re7 (25...h5 26.gh5 Re7 27.f3+-) 26.f3 Rae8 (26...Rd7 27.Rc5+-) 27.Nd5 Rd7 28.Rc5 g6 (28...Bh3 29.Ra7 h5 30.gh5 Be6+-) 29.Nf6 1–0. kamret (2175) – Miradko (1690), GameColony.com, 2003.

4.b5+/- Nd4 5.Nd4 ed4 6.Bd4 Nf6 7.e3 c5 8.Bc3 +/-.

4.b5+/- Nd4 5.Nd4 ed4 6.Bd4 Nf6 7.e4 c5 8.bc6 dc6 9.e5 Qe7?? (9...Be7 10.c3 Nd5 11.Qf3+=) 10.f4 (better is 10.Qe2 Be5 11.Qe5+-) 10...Nd5+= 11.Qf3 Bc5 12.Bc5 Qc5 13.c4 Nb4 14.Qb3 (14.Qe4 Bg4 15.a3 Qd4 16.Qd4 Nc2 17.Kf2 Nd4+=) 14...Be6 (14...Bf5!? 15.Na3 0-0-0=) 15.a3 Na6? (better is 15...Qd4!? 16.Nc3 0-0-0=) 16.Qb7+/- 0-0? (better is 16...Rd8+/-) 17.Qa6+- Qd4 18.Nc3 Qf4 19.Qc6 Rad8 20.d3 (better is 20.Rd1 Qe5 21.Be2 Qa5+-) 20...Qe5 21.Qe4?? (better is 21.Kd2+-) 21...Qc3–+ 22.Kf2 Qa1 23.h4 Rd4 (23...Rfe8 24.Kg1–+) 24.Qe3 Qb2 25.Be2 Bg4 26.Kg3 (26.Rb1 Qe2 27.Qe2 Be2 28.Ke2 Re8 29.Kd2–+) 26...Be2 0–1. marluc – ritry, Live Game Caissa's Web, 2004.

4.b5+/- Nce7 5.Ne5 Nf6 6.Nc4 Bf4 7.e3 Bg5 8.h4 Bh6 9.g4 d6? (better is 9...Ng4 10.Qg4 d5+/-) 10.g5 Bg4 (10...Neg8 11.Qf3+-) 11.f3 Bf5 (11...Be6 12.gh6 (< 12.Bf6 gf6 13.gh6 d5+-) 12...Nf5 13.hg7+-) 12.gh6 (< 12.gf6 gf6 13.Bf6 Rg8+-; < 12.Bf6 gf6 13.gh6 d5+-) 12...gh6 (12...Rg8+-) 13.Bf6 Rg8 14.Nc3 Qd7 15.Bd4 0-0-0 (15...h5 16.e4 Be6 17.f4+-) 16.Ba7 Ng6 (16...Rde8 17.Bd4+-) 17.Bd4 (17.Nd5!? Qe6 18.e4 Be4+-) 17...d5 18.h5 Ne7 (18...dc4 19.hg6 Rg6 20.Bc4+-) 19.Ne5 Qe6 20.Ne2 f6 (20...Rdf8 21.Nf4 Qd6 22.c4+-) 21.Nf4 Qd6 22.Nf7 (22...Qd7 23.Nd8 Kd8 24.Bf6+-) 1–0. market (2155) – mallelo, GameColony.com, 2002.

4.b5+/- Nce7 5.Ne5 Nh6 6.Nc4+- 0-0 7.e4 (7.Nd6 cd6 8.e3 Qc7+-) 7...Bc5 8.d4 Bb4 (8...Bb6 9.Bc1+/-) 9.c3 Bc3? (9...d5 10.cb4 dc4 11.Bc4 Qd6+-) 10.Nc3 Ng6 (10...d5 11.ed5 Re8 12.d6 cd6 13.Be2+-) 11.Bd3 d6 12.0-0 Nf4 13.Bc1 Bg4 (13...Nd3 14.Bh6 Nb4 15.Be3+-) 14.f3 (14.Bf4?! Bd1 15.Rad1 Ng4+-) 14...Bd7 (14...Nd3 15.Bh6 Be6 16.Qd3 gh6+-) 15.Bf4 Qh4 16.Nd5 (16.Qd2 Be6+-) 16...Bb5 17.Qd2 Bd7 (17...c6 18.Bg5 Qh5 19.g4 Ng4 20.Ne7 Kh8 21.fg4 Qg4 22.Qg2 Qg2 23.Kg2+-) 18.Nc7 Rac8 19.Bd6 Rfe8 (19...Bc6 20.d5 Qd8 21.Bf8 Qf8 22.Qa5+-) 20.Ne8 Re8 21.Bf4 Re6 22.Ne5 Bc8 23.Bg5 Qh5 24.g4 Qh3 25.Rfc1 Rg6 26.Rc8 1–0. Energie – Ivofle, playchess.de, 2005.

4.b5+/- Nf6? 5.bc6+- dc6 6.Ne5 (6.Be5?! Be5 7.Ne5 Qd4 8.Nf7 Ne4+=) 6...Be5 (6...0-0 7.e3+-) 7.Be5 Ng4 (7...0-0 8.e3+-) 8.Bg3 (better 8.Bg7 Rg8 9.Bb2 Qd6+-) 8...Nf2 (8...0-0+-) 9.Kf2 (9.Bf2 Bg4+-) 9...c5?? (better 9...Qf6 10.Ke1 Qa1+/-) 10.Ke3 (10.Nc3 c6+-) 10...Kd7 (10...Qd4 11.Kf3 Bg4) 11.Bf4 (better 11.c3+-) 11…Ke8 1-0. opperwezen (2775) - xuanet (2780), lichess.org, 2016.

5.a3 Nd5 +/-.

5.a3 e4?? 6.Bg7+- (6.ab4?! ef3 7.Bg7 fg2 8.Bg2 Qg5 9.Bh8 Qg2+/-) 6...ef3 7.ef3 (better is 7.Bh8!? fg2 8.Bg2 Qg5+-) 7...Be5 (7...Qe7!? 8.Be2 Be5 9.Bh8 Bh8+/-) 8.Be5+- f6 (8...Qe7 9.f4+-) 9.Bb2 (worse is 9.ab4 fe5 10.Qe2 Qe7+-) 9...Qe7 10.Be2 Nd5 11.0-0 c6 (11...Nf4 12.Kh1+-) 12.Re1 Kd8 13.c4 Nf4 14.a4 Qb4 15.Ba3 Ne2 16.Qe2 Qa4 17.Be7 Ne7 18.Qe7 Kc7 19.Ra4 cb5 20.cb5 b6 21.Rc4 Kb8 22.Qd6 1–0. Hal1958 – Pera, playchess.de, 2004.

5.c4 Qe7 6.a3 Nd3 7.ed3 f6 8.Nc3 Bc5 9.Nd5 Qd6 10.d4 e4 11.dc5 Qc5 12.Qe2 (12...Ne7 13.Qe4+-; better is 12.Ng5! fg5 13.Bg7 Kd8 14.Bh8 c6+-) 1–0. Wall,Bill – Relic, internet, 2003.

5.c4 f6 6.a3 +-.

5.e4 Nf6 6.a3 0-0 7.ab4 Ne4 8.Be2+- (8.Be5?! Be5 9.Ne5 Re8=; 8.Ne5?! Be5 9.Be5 Re8=).

5.e4 Nf6 6.a3 a5 7.ab4 ab4 (7...Bb4 8.Be5 d5 9.ed5 0-0+-) 8.Ra8 Ne4 9.d4 f6 (9...0-0 10.Bd3 Ng5 11.de5+-) 10.Bc4 h5 (10...Be7 11.de5 f5+-) 11.de5 fe5 12.Qd5 Nf6 13.Qf7 1–0. marekt – lucky_bucky, ChessWorld.net, 2004.

5.e4 Nf6 6.a3 Ne4 7.ab4 Bb4 (7...Nf6+-) 8.Ra4 c5 (8...Qe7 9.c3 Nc5 10.Rb4+-) 9.c3 Ba5 (9...d5 10.cb4 cb4 11.Be2+-) 10.Re4 d6 11.Bc4 0-0 12.Bd5 Rb8 (12...a6 13.Na3+-) 13.0-0 Bf5 14.Re3 Bb6 15.c4 a5 (15...Ba5 16.Nc3+-) 16.Nc3 Qf6 17.Na4 Bd8 (17...Qd8+-) 18.Ne5! de5 19.Be5 Qg6 20.Rg3 Qh6 21.Qf3 Be6 22.Bg7 Qf6 23.Bf6 Bg4 24.Rg4 (24.Qg4?!=) 1–0. Janek – Hajbo, internet, 2019.

5.e4 Nf6 6.Ne5?! Ne4 7.Nc4 Qe7=.

5.Be5?! Be5 6.Ne5 d6 +=.

5.Ne5 Be5 6.Be5 f6 7.Bb2 d6 8.c4 Bf5 9.d3 Qd7 10.e4 Bg6 11.Be2 d5 12.0-0?? de4 13.Nc3 ed3 14.Bg4 Bf5 15.Bh5 g6 16.Bf3 Ne7 17.Be4 Be4 18.Ne4+- Qe6 19.Re1 0-0-0+/- 20.Bf6 Rhf8 21.Bg7 Rf5= 22.Bc3? Nc2–+ 23.Nc5?? Qc4 24.Nb3 Rb5 25.Re7 Na1?? 26.Be5?? Re5!–+ 27.Re5 Nb3 28.ab3 Qc3 29.Re3 b6 30.Kf1 Rd5 31.Qg4 Kb8 32.Re8 Kb7 33.Qc8 Kc6 34.Re6 Rd6 35.Qa8?? Kb5 36.Re5?? Qe5 37.Qa7 Rd4 38.Qc7 Qc7 (39.g3 d2 40.Kg2 Qc6 41.f3 d1Q 42.h4 Qdf3 43.Kh3 Qg2; 38...Qe2 39.Kg1 Qd1) 0–1. gtate (1720) – dengel, net–chess.com, 2002.

5.Ne5 Nf6 6.e3 +/-.

4.Bg7+- ef3 5.ef3 Qg5 (5...Be5 6.Be5 f6 7.Bb2+-) 6.Bh8 f6 (6...Bb4 7.c3 Be7 8.Bd4+-) 7.Qe2 (7.h4 Qg6 8.h5 Qf7+-) 7...Be7 (7...Ne7 8.c3+-) 8.Nc3 h5 9.Qe3 (9.Qc4 c6 10.f4 Qg6+-) 9...Qg6 (9...c6 10.a3+-) 10.Bd3 Qf7 (10...f5 11.0-0+-) 11.0-0 (11.Qe4 Kd8+-) 11...d6 (11...Kd8 12.Rfe1+-) 12.Rfe1 (12.Nb5 Kd8 13.Na7 Bd7+-) 12...Nc6 13.a3 Bd7 14.Qe4 (14.Be4 a6+-) 14...0-0-0 15.Bc4 Qf8 16.Qh7 (16.b5 Ne5 17.Bd5 Nh6 18.Bb7 Kb8+-) 16...Qh6 17.Re7 (17.Bg8 Qh7 18.Bh7 Rh8+-) 17...Nce7 18.Qh6 Nh6 19.Bf6 Re8 20.Re1 Nhf5 21.Be7 Ne7 22.Bf7 Kd8 23.Be8 Be8 24.g4 h4 25.f4 Ng6 26.Ne2 h3 27.f3 Nh4 28.Kf2 Bc6 29.Nd4 Ng2 30.Nc6 bc6 31.f5 Ne1 32.Ke1 1–0. Otto,Norbert (2075) – Juha,Michael (1820), remoteschach.de, 2007.

4.Bg7+- ef3 5.Bh8 Bb4 6.gf3 Nc6 7.Rg1 Nf6 8.Nc3 d5 9.Nd5! Nd5 10.Rg8 Bf8 11.Bg7 (11...Qg5 12.c4+- (12.Rf8?! Ke7 13.Rg8 Kd7+-)) 1–0. pierre – Gaurav G Pathak, internet, 2008.

4.Bg7+- ef3 5.Bh8 fg2 6.Bg2 Bb4 +-.

4.Bg7+- ef3 5.Bh8 fg2 6.Bg2 f6 7.e3 Bb4 8.Qh5 Ke7 9.Qh7 Ke6 10.Qe4 Kf7 11.Qc4 Kg6 12.Be4 Kh6 13.Qf7 Kg5 14.h4 Kg4 15.Qg6# 1–0. pierre – opponent, internet, 2008.

4.a3 b5 5.e3 Nf6 6.c4 bc4 7.Bc4 h6 8.0-0 c6 9.d4 e4 white timed out 0–1. chessxliv (2130) – sammyo (2120), net–chess.com, 2014.

4.a3 c6 5.e3 Bc7 6.c4 d6 7.Be2 Nf6 8.Nc3 0-0+=.

4.a3 c6 5.e3 Bc7 6.c4 d6 7.Be2 Nf6 8.d4 0-0= 9.Nc3 (9.0-0 e4 10.Nfd2 Nbd7=) 9...e4 (9...Nbd7 10.0-0=) 10.Nd2 d5 (10...h6 11.0-0=) 11.cd5 (11.0-0 Bf5+=) 11...cd5= 12.Nb5 Bb6 13.0-0 a6 14.Nc3 Be6 (14...Bc7 15.Rc1=) 15.Nb3 Nc6 (15...Bc7 16.Nc5=) 16.Nc5 Bc5 (16...Rac8 17.Rc1+=) 17.bc5+/- h6 (17...Rab8 18.Rb1+/-) 18.h3 (18.Na4 Rab8+/-) 18...Nh7 (18...Rab8 19.Rb1+/-) 19.Qb3 f5 (19...Rab8!?+/-) 20.Nd5+- Bd5? (better is 20...Qf7 21.Bc4 Na5 22.Ne7 Kh8 23.Be6 Nb3 24.Bf7 Rf7 25.Ng6 Kg8+-) 21.Qd5 Kh8 (21...Qf7 22.Qf7 Kf7 23.d5+-) 22.Qb3 Nf6 (22...Ng5 23.d5 Ne5 24.Rfd1+-) 23.d5 Ne5 24.d6 (24.Rab1 Rac8 25.d6 Qe8+-) 24...Qe8 (24...Qf7 25.Qf7 Nf7 26.Bd4+-) 25.Rfd1 (25.Rab1 Nfd7 26.Bd4 Rb8+-) 25...Ned7 (25...Nfd7 26.Rab1+- (26.Qb7 Rb8 27.c6 Rb7 28.cb7 Nd3 29.Bd3 ed3+=)) 26.Bd4 (26.Qb7?! Rb8 27.Qb4 Rb4 28.ab4 Nb8+=) 26...Qe6 (26...Rb8+-) 27.Qe6 1–0. Janek – Vassileos, internet free game, 2017.

4.a3 c6 5.e3 Bc7 6.c4 d6 7.Be2 Nf6 8.d4 e4 9.Nfd2 Bf5 (9...0-0 10.Nc3=) 10.g4 (10.d5 0-0=) 10...Bg6 11.g5 (better 11.h4 h6 12.d5=) 11...Nh5?? (better 11...Nfd7 12.Nc3 f5=) 12.h4+- d5 (12...h6 13.Bh5 Bh5 14.Qh5+-) 13.Bh5 Nd7 (13...Bh5 14.Qh5 Nd7 15.Nc3+-) 14.cd5 cd5 (14...Bh5 15.Qh5 cd5 16.Nc3+-) 15.Be2 (15.Bg6 fg6 16.Nc3 Nb6+-) 15...a5 (15...0-0 16.Nc3 Nb6 17.Qb3+-) 16.Nc3 ab4 (16...Nb6 17.Qb3 ab4 18.Nd5 Nd5 19.Qd5+-) 17.Nd5 Qd6 18.Nc7 Qc7 19.ab4 0-0 (19...Ra1 20.Qa1 h6 21.gh6 Rh6 22.Qa8 Qd8 23.Qb7 Rh4 24.Rh4 Qh4 25.d5+-) 20.h5 (20.Ra8!? Ra8 21.Bg4 h6 22.gh6 gh6+-) 20...Bf5 21.h6 (21.Rh4 Qd6+-) 21...g6 22.d5 Nb6 (22...Qd6 23.Qb3 Ra1 24.Ba1+-) 23.Ra8 Ra8 24.Ne4! Be4 25.Qd4 f6 26.Qf6 Nd5 27.Bc4 Qf7 28.Qh8 1–0. Janek – Gutes, internet free game, 2017.

4.b5 c5 5.d3 (5.Nc3 Nf6+=) 5...Bc7= 6.e3 d6 7.e4 h6 8.Nc3 Nf6 9.Be2 Nbd7 10.0-0 Nb6 11.a4 a5 12.ba6 ba6 13.a5 Nbd7 14.Nd2 Rb8 15.Rb1 (15.Nc4!?=) 15...h5 (better is 15...Ba5!? 16.Nb3 Bc3 17.Bc3 0-0–/+) 16.Nc4+= 1–0. Tagirov,Kajum K (1915) – Gusev,Fedor, Ufa Dautov Memorial, 2007.

4.b5 c6 5.a4 a6 6.e4 Nf6 7.Nc3 0-0 8.Bc4 Bc5 9.0-0 b6 (9...d6 10.Qe2=) 10.h3 Bd4 11.Re1 ab5 (11...Qc5 A) worse 12.Nd4 ed4 (worse 12...Qc4 13.Nf5+=) 13.Qe2 Re8–+; B) 12.Qe2 d5 B1) worse 13.Nd4 ed4 (worse 13...Qd4 14.ed5 cd5 15.Nd5 Qb2 16.c3+-) 14.Bd5 ab5 (14...Nd5?! 15.Nd5 cd5 16.Ba3+=) 15.ab5 Ra1 16.Ra1 cd5=+ (worse 16...Nd5 17.Nd5 cd5 18.Ba3+-); B2) 13.ed5 ab5 B21) 14.Nd4 ed4 15.ab5 Ra1 16.Ra1 cd5 (worse 16...dc3 17.Ba3 Qd4 18.Bf8 cd2 19.Rd1 cb5 20.Bd6 Qc4 21.Qe7+=) 17.Nd5 Nd5=; B22) 14.Bb3 Bc3 15.Bc3+=) 12.ab5+= Ra1 13.Qa1 (better 13.Ba1 Qc5 A) worse 14.Nd4 ed4 (worse 14...Qc4 15.Nf5+=) 15.e5 dc3=+; B) 14.Qe2 Bc3 15.Bc3 cb5 16.Bb5+=) 13...c5?? (13...Qc5 14.Nd4 ed4–/+ (worse 14...Qc4 15.Nf5 cb5 16.Nd5 Nd5 17.Be5+-)) 14.Qa7+- (14.Nd4?! cd4 15.Qa7 Qb4+=) 14...d5?? (14...Qd6 15.Nd4 Qd4+-) 15.Qe7 (15.Qe7 dc4 16.Ne5 Be5 17.Qe5+-; 15.Qb8?! Bb7 16.Qa7 dc4 17.Qb6 Rb8+=) 1–0. Rico – Sutterney, internet, 2019.

4.b5 c6 5.e3 Bc7 6.Be2 Nf6 7.c4 d5 8.d4 e4 white timed out 0–1. chessxliv (2130) – gregorgysi (2575), net–chess.com, 2014.

4.b5 Nf6 5.e3 c6 6.c4 Bc7 (6...0-0 7.Be2 cb5 8.cb5 e4 9.Nd4 Bc7 10.d3 d5 11.Nd2 a6=; 6...cb5 7.cb5 Bc7 8.Qc2 d6 9.Nc3 Nbd7 10.Be2 d5 11.0-0 0-0=) 7.Be2 (7.Nc3 0-0 8.e4 d6 9.Be2 Ba5 10.Qc2 Nbd7 11.0-0 Nc5=) 7...d5 (7...cb5 8.cb5 d5 9.Ba3 Qd7 10.d4 e4 11.Ne5 Qe6=) 8.cd5 cd5 (8...Nd5 9.e4 Nf4 10.Bf1 0-0 11.g3 Ng6+=) 9.a4 (9.Ba3 Qd8 10.d4 e4 11.Nfd2 Be6=) 9...0-0 (9...Bg4 10.Nc3 d4 11.ed4 e4+=) 10.0-0 (10.d4 e4 11.Ba3 Qd8=) 10...Bg4 (10...e4 11.Nd4 Qe5+=) 11.Ba3 Bd6 12.Bd6 Qd6 13.d3 Nbd7 14.Nbd2 Rfc8 15.Rc1 Rc1 16.Qc1 e4 17.de4 de4 (worse is 17...Ne4 18.Rd1 Qc5 19.Qc5 Ndc5 20.a5=) 18.Nd4 Nc5 19.Qc2 Be2 20.Ne2 Nd3 21.Ng3 Qc5 22.Qc5 Nc5 23.Rc1 Na4 24.Nde4 Nd5 25.Kf1 Kf8 26.Nf5 a5 27.Ke2 g6 28.Nfd6 b6 29.Rc6 Ke7 30.Kd2 f5 31.Ng5 Rd8 32.Nc8 Kd7 33.Na7 Ra8 34.Nh7 Ra7–/+ 35.Rg6 Ne7 36.Rg7 Kd6 37.Nf8 Nc5 38.h4 a4 39.Ng6 a3 40.Ne7 Re7 41.Re7 Ke7 42.Kc3 Nd3!! 43.Kb3 Nf2 44.Ka3 Ng4 45.e4 fe4 46.Kb3 Kd6 47.Kc3 Kc5 48.h5 Kd5 49.g3 Kc5 50.Kd2 Kb5 51.h6 Nh6 52.Ke3 0–1. De Kruif,K (1990) – Cordts,I (2305), 34th Taminco Open, 2011.

4.c4 b6 =.

4.e3 a6 5.a3 c6 6.c4 Nf6 7.Nc3 Bc7 8.Be2 d6 9.0-0 Be6 10.d4 e4 11.Nd2 d5 12.cd5 cd5 13.Nb3 b6 14.Rc1 0-0 15.f3 Rc8 16.fe4 Ne4? (better is 16...de4 17.Qc2 Bd5=) 17.Ne4+- de4 18.d5 Rd8 19.Qd4 Qg5?? (better is 19...f5 20.Rc7 Qc7+-) 20.Rc7 Bd5 (20...Rd5 21.Qe4 (21.Qb6?! Nd7 22.Qb7 Qe3 23.Rf2 Rb8+-) 21...Nd7 22.Bc4+-) 21.Rf5! Qf5 (21...Qf5 22.Qg7#) 1–0. marekt – parsman, ChessWorld.net, 2012.

4.e3 Bb4 5.Be5 Nf6 6.Bc7 +/-.

4.e3 b6 5.b5 (5.Nc3 A) 5...Bb4? 6.Nd5 Qc5 7.Nc7 (7.Be5 Kf8 8.Nc7 d6 9.Na8 de5+-; 7.Nb4?! Qb4 8.Be5 Nf6+/-) 7...Qc7 8.Be5+-; B) 5...Nf6 6.Nb5 0-0+=) 5...Nf6 6.Be2 Bb7 7.0-0 Bf3 8.Bf3 0-0?? (8...e4 9.Be2=) 9.Nc3 (better is 9.Ba8 a6 10.a4+-) 9...c6+= 10.a4 a6 11.bc6 dc6 12.Ne4 Nbd7 (better is 12...Ne4!? 13.Be4 f5=) 13.Nd6+/- Qd6 14.d4 (better is 14.Ba3!? c5 15.Ba8 Ra8 16.d3+/-) 14...e4 15.Be2 Qb4? (better is 15...Rfd8=) 16.Ba3+- Qa5 17.Bf8 Rf8 18.Qb1 Nd5 19.c4 N5f6 20.Rc1 c5 21.dc5 Nc5 22.Qb2 Na4? 23.Qc2+- b5 24.cb5 ab5 25.Qc6 Qd8 26.Qb5 Nb6 27.Ra6 Nbd5?! 28.Rac6 Qd7 29.Qa6?? Nb4= 30.Rd6 Na6 31.Rd7 Nd7 32.Ba6 Ne5 33.h3 h5 34.Bb7 Rb8? 35.Be4+/- g6 36.Ra1 Kg7 37.f4 Nc4+= 38.Kf2 Rb2 39.Kf3?? Nd2–+ 40.Kg3 Ne4 41.Kf3 Nd2 42.Kg3 Rb3 43.Kf2 Rb1 44.Ra2 Ne4 45.Kf3 f5 46.Ra7 Kh6 47.Ra8 Rf1 48.Ke2–+ Rf2 49.Ke1 Rg2 50.Rh8 Kg7 51.Ra8 Rh2 52.Ra7 Kh6 53.Kf1 Rh3 54.Ra8 Re3 55.Rh8 Kg7 56.Ra8 Rf3 57.Kg2 Rf4 58.Ra7 Kh6 59.Ra4 Kg5 60.Kh2 Rg4 61.Rb4 Kh4 62.Rb3 Rg3 63.Rb2 Ng5 64.Rb4 Ne4 65.Rb6?? g5–+ 66.Rb4 g4 67.Rb5 Rf3 68.Kg2 Rf2 69.Kg1 Kh3 70.Rb3 g3 71.Ra3 Kg4 72.Kh1 h4 73.Kg1 Kh3 74.Kh1 Rf1# 0–1. Neumann,Frank (1650) – Juha,Michael (1820), RSS5E NoEngine–59, 2008.

4.e3 c6 5.c4 Bc7 6.Qb3 Nf6 7.Nc3 0-0 8.Be2 d6 9.a4 (9.0-0 Na6=) 9...Be6 10.d4 e4 11.Nd2 Bf5 (11...d5 12.b5 dc4 13.Bc4 Bc4 14.Qc4=) 12.c5 (12.a5 Nbd7+=) 12...Nbd7+= 13.Ba3 Rfd8 14.Nc4 d5 15.Nd2 Bg4 16.h3 Be2 17.Ke2 b6 (17...Nh5 18.Rhd1+=) 18.Rhc1 (18.b5 Qe6+=) 18...bc5–/+ 19.bc5 Rdb8 20.Qc2 Qd8 21.Rcb1 Qc8 22.Rb8 Rb8 23.Rb1 Qa6 24.Ke1 g6 (24...Rb1 25.Qb1 Nf8 26.Qc2–/+) 25.Rb8+= Nb8 26.Ndb1 h5 27.Qe2 Ba5 28.Qa6 (28.Bb2 Bb4 29.Qa6 Na6=) 28...Na6+= 29.Ke2 Kf8 ½–½. Leckebusch,Hans Peter (1875) – Losch,Heinz Juergen (1870), Ruhrgebiet VK3, 2005.

4.e3 f6 5.a3+= b6 6.c4 (6.Nc3 a5+=) 6...e4 (6...a5 7.b5=) 7.Nd4+= g6 8.g3 Be5 9.Bg2 f5 10.Qc2 Ba6 11.b5 Bb7 12.0-0 Nh6 13.Ne2 d6 14.Nbc3 Nd7 15.Nd5 Bd5 16.cd5 0-0-0 (16...Bb2 17.Qb2 0-0 18.Nf4+=) 17.Rac1 (better is 17.Nd4+/-) 17...c5? (better is 17...Nc5 18.Nd4 Nd3+/-) 18.bc6+- Nc5 19.Nd4 Qf7 20.Nb5 Nd3?? (20...a6 21.c7 Rd7 22.Nd6 Bd6 23.Bh8 Bc7+-) 21.Be5 Ne5 (21...de5 22.c7 Nc5 23.cd8R Kd8 24.Qc3+-) 22.a4 (22.Qa4!? a5 23.Qd4 Qc7+-) 22...a5 (22...a6 23.c7 Rd7 24.Na7 Kb7 25.c8Q Rc8 26.Nc8 Qd5 27.d4+-) 23.Qb3 Nd3 24.c7 Rd7 (24...Nc1 25.Rc1 (25.cd8N?! Nb3 26.Nf7 Nf7=) 25...Rdf8 26.Nd6 Kd7 27.Nf7 Nf7 28.Qb5 Ke7 29.Qb6+-) 25.Qc3 (better is 25.Rc6 Nb4 26.Rb6 Rc7 27.Nd6 Kd7 28.Nf7 Nf7 29.Qb2+-) 25...Re8 (25...Nc5 26.Qh8 Qg8+-) 26.Qc6 Rc7 27.Qa8 1–0. Hal1958 – Carle, playchess.de, 2004.

4.g3 b6 5.Bg2 Bb7 (5...Bb4? 6.Ne5 f6 7.Ba8 fe5 8.c3+-) 6.0-0 Nf6 7.b5 0-0 8.a4 a6 9.ba6 (9.d3 Re8=) 9...Na6 10.d4 ed4 11.Bd4 Rfe8 12.Re1 c5 13.Bb2 Nc7 14.c4 Ne6 (14...Bc6 15.Nc3=) 15.Nc3 (15.Nh4 Bg2 16.Nf5 Qd8 17.Nd6 Bc6 18.Ne8 Ne8+-) 15...h6 (15...Nf8 16.Nh4 Bg2 17.Nf5=) 16.Nb5 (16.Nh4!? Bg2 17.Nf5+-) 16...Bb8 17.Bf6 gf6 (17...Qf6!? 18.Qd7 Re7+=) 18.Nh4+/- Bg2 19.Nf5 Qd8 20.Kg2 Be5 21.Nh6 Kf8 22.Ra3 Nd4 23.Qd3 (23.Nd4 Bd4 24.e4 f5 25.Nf5 Qf6+-) 23...f5 (23...Nb5 24.cb5 f5 25.Nf5+-) 24.Nd4 cd4 25.Qf5 f6?? (25...Qe7 26.Rf3 f6+-) 26.f4 (26.Qh7 Bg3 27.Qf7) 26...Bd6 (26...Qe7 27.fe5 Qe5+-) 27.Qh7 (27.Qh7 Re2 28.Re2 Ba3 29.Qg8#) 1–0. Yeung,Chun Keung – Lau,Kwok_cheung, 10th AfroAsian Zonal Champs Prelim Group, 2007.

5.c4 c5 6.Nc3 (6.bc5 Bc7+=) 6...0-0 7.bc5 Bc5 8.e3 d6 9.Be2 Ng4 (9...e4 10.Nd4=) 10.Ne4 (10.Nd5!? Qd8 11.d4 ed4 12.ed4+=) 10...Nc6= 11.0-0 Bf5 12.Nc5 dc5 13.d3 Rad8 14.Ne1 Qg5 15.Qb3 b6 16.Bg4 (16.Bf3!? Na5 17.Qc2=) 16...Bg4 17.Qc2 Rd6 18.f4 Qh5 19.g3 (19.fe5 Ne5 20.d4 Ng6=) 19...f6 20.Rf2 Ne7 21.fe5 Re6?? (better is 21...fe5 22.Rf8 Kf8+=) 22.d4 (better is 22.ef6!? gf6 23.Ng2+/-) 22…fe5 ½–½. Meybohm,Dirk – Borchert,Juergen, corr, 1985.

5.e3 0-0 6.c4 White gets strong initiative 6...e4 7.c5 ef3 (7...Bf4 8.Bf6 Qf6 9.Nc3 ef3 10.Nd5=) 8.cd6 Qd6 (8...fg2 9.de7 gh1Q 10.ef8R Kf8 11.Bf6 gf6 12.Qh5+=) 9.Qf3+= (worse is 9.gf3 Qe7=) 9...Nc6 (9...Nd5 10.Nc3 Nc3 11.Bc3+/-) 10.Be2 (10.Bf6 Qf6 11.Qf6 gf6+/-) 10...Ne5 (10...Nd5 11.0-0+=) 11.Be5 (11.Qg3!? Re8 12.d4+/-) 11...Qe5+= 12.d4 Qd5 (12...Qe7 13.Nc3=) 13.Qd5+/- Nd5 14.Bf3 c6 (14...Nf6!?+/-) 15.Bd5+- cd5 16.Nc3 d6 (16...b6 17.Nb5+-) 17.Nd5 Be6 18.Nc3 Rfc8 (18...Rac8 19.Kd2+/-) 19.Ne4 (19.Kd2 a5+-) 19...Rd8 (19...Rc6 20.b5 Rb6 21.a4+/-) 20.Kd2 (20.0-0 f5 21.Ng3 a5+/-) 20...Rac8 21.Rhc1 Rc1 22.Rc1 Kf8 23.Ng5 Bf5 24.Rc7 Rd7 25.Rd7 Bd7 26.Nh7 Ke7 27.Ng5 b6 28.Kc3 a5 29.Kc4 ab4 30.ab4 f6 31.Ne4 Ke6 32.Nc3 Bc8 33.Kb5 Bb7 34.g3 Kf5 35.d5 Kg4 36.Kb6 Bc8 37.Kc7 Kf3 38.Kc8 Kf2 39.b5 Ke3 40.Kd7 Kd4 41.Kd6 (41.Kd6 Kc3 42.b6+-) 1–0. Woelfelschneider,Peter – Hess,Volker, FICGS, 2006.

5.e3 a5 6.Nc3 (6.b5 0-0=) 6...ab4 7.ab4 Ra1 8.Qa1 Bb4? (better 8...Nc6 9.Na2 e4=) 9.Qa8+- 0-0 10.Qb8 d5 11.Be2 d4 12.Nb5 de3 13.fe3 (13.Nc7 ef2 14.Kf1 Bd6 15.Be5 Be5–+) 13...e4 14.Nfd4 Bg4? (better 14...c6 15.Nc3 Bd6+-) 15.Qc7 Qe8 (15...Qc7 16.Nc7 Rd8 17.Ncb5+-) 16.Bg4 Ng4 17.Bc3 Bc3 18.Nc3 (worse 18.Qc3 Qe5+-; 18.dc3?! Ne3 19.Ke2 Nd5 20.Qb7 Qe5+-) 18...f5 19.h3 (19.Qb7 g6+-) 19...Ne5 (19...Rf7 20.Qf4 Nh6 21.0-0+-) 20.Qb7 Qg6 (20...Rf7 21.Qd5 Kh8+-) 21.Qd5 Nf7 22.0-0 Kh8 (22...Re8 23.Nf5 Qe6 24.Qe6 Re6 25.Rf4+-) 23.Rf5 1–0. Terry the Ing – Oup63, internet, 2019.

5.e3 a6 6.c4 c5 7.bc5 Bc5 8.Ne5 Nc6 9.Nd3 0-0 (9...Bd4!?+-) 10.Nc5+- Qc5 11.Bf6 gf6 12.Nc3 Qe5 (better 12...d6+-) 13.Bd3 Kh8 (13...f5 14.0-0+-) 14.f4 Qc5 (14...Qd6 15.Qc2+-) 15.Nd5 Qd6 (15...Rg8+-) 16.Qh5 f5 17.Bf5 (17.Bf5 Qg6 18.Bg6 fg6 19.Qh6+-) 1–0. Barcarola (1690) – tbsvs, internet free game, 2018.

5.e3 b6 6.c4 c5 7.bc5 bc5 8.Nc3 a6 9.Rb1 Bb7 10.Qb3 (10.d3 0-0=) 10...Bc6 (10...Bf3!? 11.gf3 Nc6=) 11.Nd5+- Bd5 12.cd5 0-0 13.Bc4 Ra7 14.Qc2 h6 15.0-0 Bc7 (15...Re8 16.Nh4 g6 17.d3+-) 16.Nh4 d6 17.Nf5 Qd7 18.f4 e4 19.g4! 1–0. Janek – Xsixtie, internet, 2017.

5.e3 h6 6.Be2 (6.Bc4 c6 7.d4 e4+-) 6...0-0= 7.d4 ed4 8.Nd4 c6?? (better 8...Be5=) 9.Nf5+- Bb4 10.ab4 Qb4 11.Bc3 Qc5 (11...Qe4 12.Ng7! Nd5 13.Nh5 Nc3 14.Nc3+-) 12.Nh6! Kh7 (12...gh6 13.Bf6 Deflection (13.Bf6 Overloading)) 13.Ra4 Kh6 (13...Qg5 14.Qd6 Qh6 15.Qf8 d5 16.Qc8 Ne4 17.Re4 de4+-) 14.Rh4 Kg6 (14...Nh5 15.Bh5 g5 16.Rh3 Qc3 17.Nc3 d5 18.Bf7 Kg7 19.Rh7 Kf6 20.Qd4 Ke7 21.Bd5 Kd8 22.Bc6 Bd7 23.Rd7 Nd7 24.Qd7) 15.Bd3 Kg5 (15...Qf5 16.Bf5 Kf5 17.Qd3 Ke6 18.Re4 Kf5 19.Re5 Kg4 20.h4 Ne4 21.Qe4) 16.f4 Kh4 17.g3 Kh3 18.Bf1 1–0. Pierre – Racuch, internet, 2020.

5.e4 a5 =.

5.b5 Nf6 6.e3 0-0 7.Nc3 Bc7 8.Qc2 Re8 9.Ng5 h6 10.h4 (10.Nge4 a6=) 10...e4+= (worse is 10...hg5 11.hg5 d6 12.gf6 Qf6 13.Rb1+/-) 11.0-0-0? (better is 11.Nh3!?+=) 11...d5 (11...hg5 12.hg5 Ng4 13.d3–+) 12.Nh3 a6 (better is 12...Bg4 13.Re1 dc4 14.Bc4 Rc8–+) 13.a4? (better is 13.bc6 bc6 14.d3–/+) 13...ab5–+ 14.ab5 dc4 15.Bc4 Be5 16.f4 Bd6 17.d4 cb5 18.Nb5 Bg4 19.Nf2 Na6 20.Ng4–/+ Ng4 21.Kb1?? Ne3–+ 22.Qb3 Nd1 23.Rd1 Bb4 24.g4 e3 25.Nc3 Bc3 26.Bc3 b5 27.Bd3 b4 28.Bb2 Qh4 29.g5 e2 (29...e2 30.Be2 Re2 31.gh6 Re1–+) 0–1. Kleinke,Uwe (1850) – Westphal,Wolfgang (2115), SMSN op Germany, 2007.

5.e3 Bc7 6.Be2 Nf6 7.a3 0-0 8.0-0 d5 9.cd5 cd5= 10.Nc3 Bg4 11.Nb5 Nc6 12.Nc7 Qc7 13.b5 Bf3 14.Bf3 Ne7 15.a4 Qd6 16.d4 e4 17.Be2 Rfc8 18.Qd2 b6 19.Rac1 Qe6 20.f3 ef3 21.Rf3 Ne4=+ 22.Rc8 Rc8 23.Qd3 Nf5 24.Rf4 g5 25.Rf3 f6 26.Rf1=+ Nfd6 27.Ba1 Kg7 28.g3 h6 29.Bf3 f5 30.Bg2 Rc4–/+ 31.Qa3 Nd2–+ 32.Rd1 N2e4 33.Re1 Rc2 34.Qd3? Qc8–+ 35.Bf1? Rc1 36.Rd1 Rc2 37.Qb3 Nf6 38.Re1 Nde4 39.Bg2?? Rc1 40.Qb4 Re1 41.Qe1 Qc2 42.a5 Ng4 43.ab6 ab6 44.h4? Qd3 45.hg5 hg5 46.Be4 fe4 47.Kh1 Qe3 48.Qe3 Ne3 49.Kg1 Kg6 50.Kf2 Nc4 51.g4 Na3 52.Ke2 Nb5 53.Bb2 Nd6 54.Ba3 Nc4 55.Be7 b5 56.Bb4 Kf6 57.Bc3 Ke6 58.Bb4 Kd7 59.Bc3 Nd6 60.Bd2 Nf7 61.Kf2 Ke6 62.Ba5 Kf6 63.Kg3 Nd6 64.Bd8 Kg6 65.Be7 Nc4 66.Kf2 Nb2 67.Ke2 Nd3 68.Bd8 b4 69.Ba5 b3 70.Kd2 Nf2 71.Kc3 Ng4 72.Kb3 Nf2 73.Bc7 Nd3 74.Kc3 g4 75.Kd2 Kg5 76.Bg3 Kf5 77.Bd6 Nf4 78.Ke3 Ng2 79.Kf2 Nh4 80.Be7 Nf3 81.Bc5 Kg5 82.Be7 Kf4 83.Bd6= Kf5 84.Bc5 Ng5 85.Bd6 Ne6 86.Ke3 Kf6 87.Be5 Kg5 88.Kf2 Kf5 89.Ke3 Nd8 90.Bd6 Nc6 91.Bc7 Nb4 92.Kd2 Nd3 93.Bd6 Kg5 94.Bg3 Nb4 95.Bd6 Nc6 96.Kc3 Kh4 97.Bf4 g3 98.Be3 Kg4 99.Kd2 Kf3 100.Bg1 Nb4 101.Be3 Nd3 102.Bg1 Nf4 103.Be3 Nh3 104.Bh6 g2 105.Be3 Nf2 106.Bf2 Kf2 (107.Kc3 e3 108.Kb4 g1Q 109.Kc5 e2 110.Kd5 e1Q 111.Kc4 Qgf1 112.Kc5 Qe7 113.Kb6 Qc4 114.d5 Qec7#) 0–1. Bonetti,Shane – Juehe, ICC, 2002.

5.e3 Bc7 6.Be2 Nf6 7.a3 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 e4 11.Nd4 Qb4 12.Nf5 Rg8 13.Nc3 d5–+ 14.Nd4 dc4 15.Qc2 Qe7 16.Rb1 b5 17.Ndb5 cb5–+ 18.Nb5 Ba5?? 19.Nc7?? Qc7 20.Qa4 Nfd7 21.Bg4 Ke7 22.Bb2 Qc6 23.Ba3 Kd8?? 24.Rb8?? Nb8 25.Qa5+/- Qc7?? 26.Be7!!+- Ke7 27.Qc7 Kf6 28.Qd6 (28…Be6 29.Qd4 Ke7 30.Be6 fe6 31.Qc4+-; better is 28.Bc8 g5 29.Qb8+-) 1–0. Poschmann,Hans – Stabenow,Juergen, corr ICCF T/19–F, 1979.

5.e3 f5 6.a3 Nf6 7.Qc2 e4 8.Nd4 g6 9.f4 ef3 10.Nf3 Rf8 11.Bd3 Bc7 12.Nc3 b6 13.0-0 Bb7 14.Rae1 d6 15.e4 fe4?? 16.Ne4 Kd7 17.Nf6 (17...Qf6 18.Bf6 Rf6 19.Ne5 de5 20.Rf6+-) 1–0. guest3948 – guest2012, ICC, 2005.

6.Qc2 Bc7 7.e3 0-0 8.Nc3 d6 9.Be2 a5 10.0-0 ab4 11.ab4 Ra1 12.Ra1 Na6 (12...d5 13.cd5 e4 14.Nd4 cd5 15.Ncb5=) 13.b5+= Nc5 14.d4 ed4 15.Nd4 d5 16.bc6 bc6 17.cd5 (worse is 17.Nc6 Qd6 18.Bf3 Qc6 (18...Qh2?! 19.Kf1=) 19.Nd5 Nd5 20.cd5 Qd6–/+) 17...cd5 18.Rc1 Qd6 (18...Qe5 19.Nf3 Qf5 20.Ba3 Qc2 21.Rc2+-) 19.g3 Qe7?? (better is 19...Bb6+/-) 20.Nd5! Nd5 21.Qc5 Qc5 22.Rc5 Be6 23.Ne6 fe6 24.Bg4 (24.Bg4 Kf7 25.Rc6+-) 1–0. pcmvr – gregorgysi (2570), net–chess.com, 2016.

6.Nc3 0-0 7.Qc2 Bc7 (7...e4 8.Ng5 Re8 9.f3 ef3 10.Nf3=) 8.d4 (8.e4!?=) 8...e4=+ 9.Ng5 d5 10.cd5 cd5 11.h4 (11.Nb5 Bb6–/+) 11...a6 12.Rc1 h6 13.e3 hg5?? (better is 13...Nc6=+) 14.hg5+- Nbd7 15.gf6 Nf6 16.Ne4! Bb6?? (16...de4 17.Qc7) 17.Nf6 Qf6 18.Qh7 1–0. Kuhn,Heinz – Meinhardt,Roland, Mehlingen, 2000.

6.Nc3 Bc7 7.e3 (7.e4 0-0=) 7...d5 (7...a5 8.Qa4=) 8.cd5+= cd5 (8...e4 9.Nd4+=) 9.Nb5+/- Nc6 (9...e4 10.Bf6 gf6 11.Rc1+/-) 10.Nc7 Qc7 11.b5 e4 12.bc6 ef3 13.Qf3 (13.Bf6 fg2 14.Bg2 gf6 15.Bd5 bc6+-) 13...Qc6 (13...Bg4 14.Qg3 Qg3 15.hg3 bc6 16.Bf6 gf6 17.Rh4+/-) 14.Rc1 Qb6 (14...Qd6 15.Bb5 Bd7 16.Bd7 Nd7 17.Bg7+/-) 15.Bd4 (15.Bf6 Qf6 16.Bb5 Kf8 17.Qd5 Qe7+-) 15...Qe6 (15...Qd6 16.Bb5 Bd7 17.Bd7 Nd7 18.Bg7+/-) 16.Bb5 (16.Bf6 gf6 17.Rc5 Bd7+-) 16...Bd7+/- 17.Bd7 Kd7 18.0-0 Rhc8 19.Rb1 (19.Bf6 gf6 20.Qh5 Rg8+/-) 19...b6 20.Rfe1 (20.Bf6 gf6 21.Rb5 Kd6+/-) 20...Ne4 21.Qe2 (worse 21.Bg7 Nd2 22.Qh5 Nb1 23.Rb1 Rg8-/+) 21...f6 22.f3 (22.Rec1 Nd6+=) 22...Nd6 23.e4 (23.Qd3 h6+=) 23...de4 24.fe4 Qc4 (24...Rc4!? 25.Qe3 Rac8+=) 25.Qg4+/- Ke8 (better 25...Kd8!? 26.e5 h5+-) 26.e5+- fe5 (26...Nf5 27.ef6 Kf8 28.fg7 (28.Qf5?! Qd4 29.Kh1 g6+-) 28...Kg8 29.Rb4+- (29.Qf5?! Qd4 30.Re3 Rc5+-)) 27.Re5 Kd8 28.Qg5 Kc7 29.Qg7 Kc6 30.Re7 Qd5?? (30...Qd3 31.Rc1 Kb5+-) 31.Rc1 Kb5 32.Rb1 Ka6?? (32...Kc6 33.a4 Qc4+-) 33.Ra7! Ra7 (33...Ra7 34.Rb6 Mate attack) 34.Rb6 (34.Rb6 Ka5 35.Qa7) 1-0. OnlyPolishOpening (2335) - RolfOtto (2195), lichess.org, 2020.

6.e3 Bc7 7.d4 d6 8.Be2 0-0 9.Nc3 Nbd7 10.d5 c5 11.0-0 Rd8 12.Qc2 Bb6 13.Na4 (13.Nh4 g6+=) 13...cb4 14.ab4 Bc7 15.Rfd1 b5 (15...a5!?+=) 16.cb5+/- Nb6 17.Nc3 Bb7 18.e4 Nh5 (18...Rdb8 19.Ra2+/-) 19.Bc1 (19.Ne5 de5 20.Bh5 Bd6+-) 19...Nf4 20.Bf4 ef4 21.Nd4 Nd7 22.Nc6 Qg5 23.Nd8 Bd8 24.Qd2 Qh4 25.g3 Qf6 26.gf4 Bb6 27.Bf3 Rf8 28.Na4 Bd8 29.Nb2 Qg6 30.Kh1 f5 31.Rg1 Qh6 32.Ra7 Bc8 33.Qc1 Bb6 34.Ra8 Bb7 35.Rf8 Nf8 36.Nc4 Bf2 37.Rg2 fe4 38.Be4 Bd4 39.Na5 Ba8 40.Nc6 Be5 41.Ne7 (41...Kh8 42.Nf5 Bf4 43.Qf1+-) 1–0. Schulze,Harald (2135) – Just,Hannes (1970), Nuremberg–ch op, 2003.

6.Na3 b5 7.cb6 ab6 8.Nc4 f6 9.Qb3 d5 10.Ne3 d4 11.Nc4.

6.Na3 b5 7.Nc2 Nf6 8.a4 ba4 9.Ra4 0-0 10.Ne3 d5.

6.Na3 b5 7.Nc2 Nf6 8.a4 ba4 9.Ne3 0-0 10.Ra4 d6 11.cd6.

6.Na3 d6 7.cd6 Bd6 8.Nc4 Will e5 fall? 8...f6 9.Nd6 Qd6 10.a3 Ne7 11.e4 Bg4 12.h3 Be6 (12...Bf3 13.Qf3 (worse is 13.gf3 Nd7=) 13...Nd7 14.Be2+=) 13.d4 ed4 14.Nd4 Bf7 15.Qc2 Nd7 16.Rd1 Rd8? (better is 16...Qf4+-) 17.Nb5 Qb8 18.Nd6 Kf8 19.Nf7 Kf7 20.Bc4 Kf8 21.0-0 Qc7 22.Rd3 (22.Rd3 Ne5 23.Rd8 Qd8 24.Rd1+-) 1–0. pcmvr – gregorgysi (2445), net–chess.com, 2015.

6.Na3 Nf6 7.Nc4 e5 seems the pivot of the position 7...e4 8.Nd4 d5 9.cd6 Bd6 10.a3 0-0 11.g3 (11.Nd6 Qd6 12.d3 a5 13.ba5 Rd8=) 11...Bc7 12.Bg2 Nbd7 13.Nf5 Qe6 14.Nce3 g6 (14...a5 15.0-0=) 15.Nh6 (15.Nd4 Qe7=) 15...Kg7 16.Nhg4 Be5 (better 16...Re8!?=) 17.Ne5+- Ne5 18.Qc2 Nd5 (better 18...a5!?+-) 19.Nc4+- f6 20.Ne5 (20.Be4?! Nb4 21.ab4 A) worse 21...Qc4 22.Be5 Qc2 23.Bf6 (23.Bc2?! fe5 24.Ra5 Kf6=) 23...Kf6 24.Bc2+-; B) 21...Nc4=) 20...fe5 21.Qe4 (21.Be4?! Kg8+-) 21...Kg8 22.Qe5 Qe5 23.Be5 Be6 24.e4 Rf7 (24...Nb6+-) 25.ed5 Bd5 26.Bd5 (26.Bd5 cd5 27.f4+-) 1–0. pcmvr – gregorgysi, net–chess.com, 2018.

6.d4 ed4 7.Nd4 d5 8.Nc3 Nf6 9.e3 0-0 10.Be2 Nbd7.

6.d4 d6 7.de5 de5 8.e4 Bg4 9.Be2 Nf6 10.Qc2 Nbd7 11.Nbd2 0-0 12.0-0 Ne8 (12...b6 13.cb6 ab6 14.b5=) 13.Rfe1 Be6 14.Nc4 (Now all is on e5) 14...f6 15.a4 Rf7 (15...a5 16.ba5 Ba5 17.Reb1+=) 16.Red1 a5 17.Bc3 ab4 18.Bb4 Nb8 19.Nd6 Bd6 20.cd6 Qd7 21.Rab1 b6 22.Rb2 (22.Bd2 Qd8 23.Be3 c5+/-) 22...Qa7 (Attacking the isolated pawn on a4) 23.a5 ba5 24.Bc5 Qd7 25.Rb6 Qc8 26.Qa4 Rd7 27.Ba3 Qd8=+ 28.Bc4 Qb6 29.Be6 Kh8 30.Bd7 Nd7 31.Rc1 Qb5–/+ 32.Qc2 c5–+ (Black prepares the advance a4) 33.Rd1 a4 34.Rd5 Qb3 35.Qc1 Rb8 36.Nd2 Qb7 37.Bc5 Rc8 38.Qa3 f5 39.Bb4 Nef6 40.Ra5=+ Ne4 41.h3 Nb6 42.Ne4 Qe4 43.Rc5? Rc5–/+ 44.Bc5 Nd7 45.Bb4 Qb1 46.Kh2= Qb3 47.Qc1 Qg8 48.Qc6 Qe8 49.Qa4 h5 50.Qc6 Kh7 51.Bc3 Qe6 52.g3 Kg6 53.Kg2 Kf7 54.Qf3 ½–½. Grund,Karl – Krueger,D, corr BdF, 1987.

6.e3 a5 7.a3 d5 8.Be2 Nf6 9.d4 e4 10.Nfd2 ab4=+ 11.ab4 Ra1 12.Ba1 0-0 13.0-0 Ne8 14.Qb3 f5 15.f4 Kh8 16.Nc3 Be6 17.b5 g5 18.b6+/- Bd8 19.Nd1 Nd7 20.Qa3 Nb6 21.Bb2 Nc8 22.Nc4 Rg8 23.Ne5 Qg7 24.g3 Nf6 25.Qb3 Qc7 26.Nf2 gf4=+ 27.ef4 Ne7 28.Nh3 h6 29.Bc3 Kh7 30.Rb1= Bc8 31.Nf7 Rg7 32.Nd6 b5=+ 33.Qd1 Be6–/+ 34.Ra1 Nc8 35.Bb4 Nd6 36.cd6 Qb7 37.Ra2 Bb6 38.Qa1 Nd7 39.Qc3 Rg8 40.Kg2 c5–+ 41.dc5 d4! 42.Qa3? Qd5?? 43.cb6–/+ d3 44.Rb2 Ra8=+ 45.Qc3 de2 46.Re2 Qc4 47.Ng1 Nb6 48.Kh3? Kg6 49.Qb2–/+ Nd5 50.Be1 Qd3 51.Kh4 Rg8 52.Qe5 Kf7 53.h3 Qd1 54.g4 Ne3?? 55.Bc3+/- Rg6?? 56.Qh8+- (56…Qd6 57.Qh7 (57.Re3?! Qe7 58.Kg3 Rg8 59.Qh6 Ke8+-) 57...Kf8 58.Qg6+- (58.Re3?! Bg8 59.Qb7 Be6+-)) 1–0. Schuehler,Ernst – Hassenzahl,M, Erfurt, 1976.

6.e3 f6 7.Be2 d5 8.cd6 Bd6 9.a3 Nh6 10.d4 Nf7 11.Nbd2 (11.Qc2 a5 12.b5 e4+=) 11...Bf5 (11...e4 12.Ng1=) 12.Nc4 Bc7 13.0-0 Nd7 14.Re1 (14.Nh4 Be6+=) 14...0-0 15.Rc1 Be4 (15...e4 16.Nfd2=) 16.Nfd2 Bg6 17.Qb3 Kh8 18.Na5 (18.b5 c5+=) 18...Rab8 19.d5 (19.Red1 Rfd8=) 19...Ba5 20.dc6? (better 20.ba5 Qd6 21.Red1=) 20...bc6-+ 21.Rc6 Bb6 22.Nc4? (22.Re6 Qd8 23.Rd1 Rc8-+) 22...Nd8 (better 22...Be4 23.Bf3 Bc6 24.Bc6 Qe6-+) 23.Rd6 Bf7 (23...Nb7 24.Rd2-+) 24.Red1-/+ Rb7 25.Qa4 Nb8 26.Nb6 ab6 (26...Rb6 27.R6d2-+) 27.Qa8 (better 27.Bf3 Be8 28.Qb3-/+) 27...h6?? (27...Ndc6 28.Qa4 Rc8 29.R6d2-+) 28.Bf3?? (28.Rd8 Rd8 29.Rd8 Qd8 30.Qb7+/-) 28...Rd7?? (better 28...Ndc6 29.Qa4 b5-+) 29.Qb8+- Rd6 30.Qd6 (30.Rd6 Nc6 31.Qb6 Qd6 32.Qc6 Qc6 33.Bc6 Rd8-/+) 30...Qd6 31.Rd6 b5 32.Rb6 (32.Bd5 Bg6+-) 32...Bc4 33.Rb8 (33.h3 Re8+/-) 33...Ne6 (33...Kg8 34.Bd1+/-) 34.Rf8 Nf8 35.Bc6 Ne6 36.f3 Kg8 37.Kf2 Kf7 38.g4 Ke7 39.h4 Kd6 40.Be8 Nc7 41.Bg6 Nd5 42.h5 Ne7 43.Be4 Bd5 (43...Nc8 44.Bc2+/-) 44.Bd3+- Bc4 45.Bc4 bc4 0-1. jhonores (2205) - Weiss24 (2205), Rated Blitz game, lichess.org, 2020.

6.e4 Nf6 7.Qc2 0-0 8.Bc4 d5 9.cd6 Bd6 10.b5 Bg4 11.Ng5 h6 12.Nf7 Rf7 13.Bf7 Qf7 14.f4 (14.Nc3!?–/+) 14...ef4–+ 15.e5 (15.0-0 Qe6 (15...cb5 16.e5=) 16.Nc3 a6–+) 15...Nd5 (15...Qe6 16.0-0 Be5 17.bc6 Nc6 18.Be5 Qe5 19.Nc3–+) 16.0-0 Bc7 17.Nc3 f3 18.Qe4 Nf4 (18...Bb6 19.Kh1 Qe6 20.Nd5 cd5 21.Qd3–+) 19.h3 (better is 19.d4!?–/+) 19...Bh5–+ 20.g4? (20.bc6 Nc6 21.Nb5–+) 20...Nh3 21.Kh2 Ng5 22.Qd4 Nd7 23.Rae1 Re8 (23...Ne5 24.Kh1 Bg4 25.Rf2 Qh5 26.Rh2–+) 24.Ne4 0–1. Huelle,Gunter (1850) – Braun,Vitali (2340), Dresden ZMD op, 2006.

6.e4 Nf6 7.Qc2 d6 8.cd6 Bd6 9.b5 0-0 10.Nc3 Bg4 11.Be2 cb5 12.Nb5 Nc6 13.0-0 a6 14.Nd6 Qd6 15.a3 Rfd8 16.Bc3 Bf3 17.Bf3 Nd4 18.Qd1 Nb5 19.Bb4 Qd3 20.Qe2 Qe2 21.Be2 Ne4 22.Rad1 Nd4 23.Bc4 Nc6 24.d3 Nb4 25.de4 Nc2 26.a4 Rd4 27.Rd4 Nd4 28.Rb1 Ra7 29.Rb6 Kf8 30.Bd5 Ne2 31.Kf1 Nc3 32.a5 Na4 33.Rb7 Rb7 34.Bb7 Nc5 35.Bd5 ½–½. algernon (2555) – katchum (2535), net–chess.com, 2014.

7.e3 0-0 8.Qc2 Na6 9.a3 b6 10.Na4 Rb8.

7.e4 0-0 8.d4 ed4 9.Qd4 a5 (9...d5!?=+) 10.Be2 ab4 11.e5 (< 11.Qb4 Ba5 12.Qd4 Ne4–/+) 11...bc3 12.ef6 Qe6 13.Bc3 Re8 14.Qd2 (14.0-0-0 Qa2 15.Bc4 Qa3 16.Kc2=+) 14...Na6 (Better is 14...Bf4! 15.Qb2 Na6=) 15.0-0+/- (< 15.fg7 Nc5 16.Nd4 Qg6–/+) 15...Qe2?? (Better is 15...Qf5 16.Bd3 Qc5+/-) 16.Qg5 (16...Qf2 17.Kf2 g6 18.Qh6 Bg3 19.Kg3 Nc5 20.Qg7#) 1–0. b4_player (2180) – maniac_2001 (2155), GameColony.com, 2002.

7.e4 a5 8.a3 0-0 9.d4 ed4 10.Qd4 ab4.

7.e4 b6 8.Qb3 bc5 9.b5 0-0 10.Bc4 cb5.

7.e4 b6 8.Bc4 bc5=+ 9.bc5 Bb7 10.a3 0-0 11.0-0 Qc5=+ 12.Ba2 d5 13.ed5 cd5 14.d3 Nbd7 15.Re1 Rfe8 16.d4 ed4 17.Ne2 Qd6 18.Nfd4?? Qh2–+ (19.Kf1 Ba6–+) 0–1. beaumont (2100) – petemarkou (2170), net–chess.com, 2007.

7.e4 b6 8.d4!? bc5 9.dc5 0-0 10.Be2 a5.

7.e4 b6 8.d4!? ed4 9.Qd4= bc5 10.bc5 Na6.

7.e4 d6 8.cd6 Bd6 9.a3=+ 0-0 10.Bc4 Nbd7.

7.d5 ef3 8.Qd4 f6 =.

7.Ne5 b6 8.Nc4 f5 9.g3 Nf6= 10.Bh3 d5 11.cd6 Bd6 12.Nd6 Qd6 13.a3 0-0 14.e3 Nd5 15.Nc3 a5 16.Nd5 Qd5 17.0-0 ab4 18.ab4 Ra1 19.Ba1 Na6 20.Bc3 Be6 21.Qa1 Ra8 22.Qb2 (22...Nc7 23.Ra1 Ra1 24.Qa1=+) 1–0. Grund,Karl – Stabenow,Juergen, corr ICCF T–19–F, 1980.

7.Ne5 d6!? 8.Nc4 d5 =+.

7.Ne5 Nf6 8.Nd2 0-0 9.Qb3 d5 10.cd6 Bd6.

7.Ng1 Nf6 8.e3 d5 9.cd6 Bd6 10.b5 0-0 11.Nc3 c5 12.Nge2 Bg4 13.Qc2 Nbd7 14.0-0-0 Rac8 15.d5 Nb6 16.h3 Bf5 17.Ng3 Bg6 18.Qb3 c4 19.Qc2 Bg3 20.fg3 Rfd8 21.Rd4 Nfd5 22.Qd2 Nb4 23.Rd8 Rd8 24.Qf2 Nd3 25.Bd3 cd3 26.Rg1 Nc4 27.Nd1 Qc5 28.Kb1 Qb5 29.Ka1 Qa4 30.Qf4 Nb2 31.Qc7 Qd7 32.Qd7 Rd7 33.Kb2 f5 34.Nc3 Kf7 35.Rf1 Ke6 36.Rd1 Ke5 37.a4 b6 38.g4 f4 39.Re1 d2 40.Re2 d1Q 41.Nd1 0–1. COMP – COMP, Blitz, 2002.

7.d4 Bg4 8.de5= Bf3 9.gf3 Be5 10.Be5 Qe5 11.Qd4 Nd7 12.Rg1 g6 13.Qe5 Ne5 14.Nd2 Nf6 15.f4 Ned7 16.Nb3 0-0-0 17.a4 Rhe8 18.a5 Ne4 19.a6+= b6 20.cb6 Nb6 21.Rc1 Kd7 22.Nd4 Rc8 23.Bh3 f5 24.Nf5 gf5 25.Bf5 Kd6 26.Bc8 Nc8 27.Rg7 Re7 28.Re7+/- Ne7 29.f3 Nf6 30.Kd2 h5 31.Rg1+- Ne8 32.Rg5 h4 33.e4 Ke6 34.Kc3 Kf7 35.f5 Nd6 36.Kd3 Nc4 37.Rh5 Ne5 38.Ke2 Nc4 39.Rh8 Kf6 40.Ra8 de4 41.fe4 c5 42.Ra7 cb4 43.e5! Ke5 44.Re7 Kf5 45.Rb7 1–0. pierred (2750) – gregorgysi (2250), net–chess.com, 2009.

7.cd6 Bd6 8.a3 Bg4 9.Be2 f6 (9...Nf6 10.d3=+) 10.d4 Bf3 11.Bf3 ed4 12.Qd4 Nd7 13.Nc3 Be5 14.Qh4 0-0-0 15.0-0 Nh6 (15...f5 16.Qc4+=) 16.Rab1 (16.b5 cb5 17.Rab1 Nf5+/-) 16...Nf7 (16...Nf5!? 17.Qc4 Nd6+=) 17.b5+/- c5 18.Nd5 Qd6 19.Rfd1 Bb2 20.Rb2 Ng5 (20...Nfe5+/-) 21.b6 (21.Bg4 Kb8+-) 21...a6 (21...Nf3 22.gf3 Nb6 23.Nb6 Qb6 24.Qg4 Kb8 25.Rb6 Rd1 26.Kg2 ab6 27.Qg3 Ka7 28.Qg7 Rc8=) 22.Rbd2 (better 22.Bg4 Kb8 23.f4+/-) 22...Nf3= 23.gf3 Ne5 (23...Nb6 24.Qe4 Kb8 25.Nb6 Qb6 26.Rd8 Rd8 27.Rb1=+) 24.Kg2 Qc6?? (24...Qe6 25.Qe4+=) 25.e4 (25.Ne7 Kb8 26.Rd8 Qc8 27.Nc8 Rd8 28.Rd8 Nc6 29.Rg8 Ka8 30.Nd6 Nb8 31.Qe4 c4 32.Qb7) 25...Kb8+= 26.Rc2 (26.Qg3 Rhe8+/-) 26...g5 (26...Qa4 27.Rcc1=) 27.Qh5 (27.Qg3!?=) 27...Ng6=+ 28.Kg1 Nf4 29.Qf7?? (29.Qh6 Nd5 30.Rcd2-/+) 29...Nd5 (better 29...Rd7 30.Qd7 Qd7-+) 30.ed5 (30.Rd5 Rd5 31.Qd5 Rc8=+) 30...Qd6 (30...Qb6!? 31.Rdc1 Rc8-/+) 31.Rdc1 Rhf8 32.Qh7 Rh8 (better 32...Rc8 33.Qe4 Qb6=) 33.Qh8?? (better 33.Qc7 Qc7 34.bc7 Kc7 35.Rc5 Kd6 36.Ra5=) 33...Rh8-+ 34.h4 Rh4 (better 34...gh4!? 35.Rc3 Rg8 36.Kf1-+) 35.Rc5 Qh2 (35...Qb6 36.Kg2-+) 36.Kf1 Qh1 (better 36...Rh8 37.R1c3-+) 37.Ke2 Qc1 (better 37...Qh3 38.Rc7 Rh7 39.Rh7 Qh7-+) 38.Rc1+/- Ra4 39.Rh1 Kc8 40.Rh7 Ra3 41.d6 Ra2 42.Ke3 Ra3 (better 42...Rc2!?+/-) 43.Ke4+- Ra4 (43...Ra5 44.Rc7 Kd8 45.Rb7 f5 46.Kd4 Rb5+-) 44.Kf5 Rd4?? (44...Ra2+-) 45.Ke6 (45.Ke6 Rh4 46.Rh4 gh4 47.Ke7 Kb8 48.d7 h3 49.d8Q) 1-0. jhonores (2220) - Weiss24 (2220), Rated Blitz game, lichess.org, 2020.

7.cd6 Bd6 8.Na3 Nf6 9.Nc4 Nbd7 10.b5 0-0 11.bc6.

7.Be2 Nf6 8.0-0 e4 9.Bf6 (9.Nd4!?=) 9...Qf6–/+ 10.Nd4 0-0 (10...Be5 11.Na3–/+) 11.Nc3 (11.f3 Qh6 12.g3 Bh3=+) 11...a6 (11...Be5 12.Nb3–/+) 12.g3 (better is 12.f3!? Qe5 13.g3=) 12...Bh3 13.Bg4? (better is 13.Re1 Be5 14.Nb3–/+) 13...Bf1–+ 14.Qf1 Qd8 (14...a5!? 15.b5 Be5 16.Nf5–+) 15.Qh3 (15.d3 Be5 16.de4 Bd4 17.ed4 de4–/+) 15...g6 16.Rc1 (16.d3 f5 17.Be2 Qf6 18.de4 fe4 19.Qe6 Kg7–+) 16...f5 (16...Be5 17.Nb3–+) 17.Be2 Qe7 18.a4 White plans b5 (18.d3 Be5 19.Nb3 ed3 20.Bd3 Nd7–+) 18...Nd7 19.d3 (19.a5 Be5 20.Nb3 Rae8–+) 19...ed3 20.Bd3 Ne5 21.Be2–/+ Nf7 22.b5 Ng5 23.Qh4–/+ Rae8 24.ba6 ba6 25.Nc6 Qc5 26.Nd4?? Ne4 (27.Na2 Qa5–+) 0–1. islanderfan (1780) – chessdeviant (2200), net–chess.com, 2007.

8.Nfd2 Nf6 9.b5 =+.

8.Nfd2 Nf6 9.Nc3 Bg4 10.Qa4 0-0 11.h3.

8.Nfd2 Nf6 9.Be2 0-0 (9...Na6 10.Qa4 0-0 11.Nc3) 10.h3 (10.0-0 b6= (10...a5 11.ba5) 11.Nc3) 10...b6 (10...a5 11.Qa4) 11.0-0 (11.Nc3=) 11...bc5 12.bc5 Ba5 (12...Ba6 13.Nc3=) 13.Nc3 Na6 (13...Ba6 14.Ba6 Na6 15.Qa4 Bc3 16.Bc3+=) 14.a3 (14.Qa4 Qc7+/-) 14...Bc3 (14...Rb8 15.Nb3 Bc7 16.Rb1=) 15.Bc3 Ne8 (15...Nb8 16.Rb1+=) 16.f4 (16.Qa4 Nb8+=) 16...ef3 (16...Nac7 17.Qa4 Qh4 18.Kh2+=) 17.Rf3 Nf6 (17...Nac7 18.Qa4 Bd7 19.Rb1+=) 18.Bd3 Ne4 (18...Nc7 19.Qa4 Bd7 20.Re1+=) 19.Be4+/- de4 20.Rf4 Qg5 (20...f5 21.Qa4 Nc7 22.Qc6 Be6=) 21.Ne4+/- Qg6 22.Nf2 Re8 23.e4 White prepares d5 23...Nc7 24.d5 cd5 25.ed5 Bb7?? (better is 25...Qg5 26.Rd4 Bh3+/-) 26.Rg4+- Qa6 (26...Qf5 27.Rg7 Kf8 28.c6 Nd5 29.cb7+-) 27.Rg7 (27...Kf8 28.d6+-) 1–0. chessdeviant (2200) – islanderfan (1780), net–chess.com, 2007.

8.Nfd2 Nh6 9.Nc3 0-0 10.b5 Qh4 11.g3.

8.Nfd2 Nh6 9.Be2 0-0 10.0-0 f5 (10...Qh4 11.g3 Qh3 12.Re1=+) 11.f3 f4 12.ef4 (12.fe4 fe3 (< 12...de4 13.ef4 Bf4 14.Nc3+=) 13.Rf8 Kf8=+) 12...Bf4 (12...e3 13.Nb3 Bf4–+) 13.fe4= de4 14.Bc4 (14.Nc3 e3 15.Nf3 a5+=) 14...Kh8= 15.d5 (15.Qe1!? Ng4 16.Ne4 Be3 17.Kh1 Rf1 18.Qf1 Nh2 19.Qf7 Qf7 20.Bf7+=) 15...cd5 16.Bd5 Ng4 17.Qe2 (17.Qe1!? Qg5 18.Rf4 Qf4 19.g3–+) 17...Bh2 18.Kh1 Rf1 19.Nf1 Qh4 20.g3 Bg3 21.Kg2 Ne5 22.Be4 Bh3 23.Kg1 Ng4 24.Bd4 Bf1 25.Kf1 Nc6 26.Bg1 Rf8 27.Kg2 Bf2 28.Bf3 (28.Qd3 Ne3 29.Qe3 Be3 30.Be3 Qe4 31.Kg3 Qe3 32.Kg2 Rf2 33.Kh1 Qe1) 28...Qg3 29.Kf1 Qg1 0–1. katchum (1780) – gregorgysi (2040), net–chess.com, 2001.

8.Nfd2 Nh6 9.Be2 0-0 10.Nc3 f5 11.g3 (11.0-0 f4=) 11...b6 12.Qb3 Be6 13.0-0-0 (better is 13.0-0!?=+) 13...Nd7 (14.Qa4 bc5 15.bc5 Nf6=+; 13...Ng4!? 14.Rdf1 a5–/+) 0–1. Bivens,William – Ludwig,M, corr NTC–01, 1991.

7.d4 e4 8.Nfd2 =.

7.d4 Bg4 8.Be2 e4 9.Nfd2 Be2 10.Qe2 d5 11.0-0 =.

7.d4 Bg4 8.Be2 e4 9.Nfd2 Be2 10.Qe2 d5 11.Nc3 Nf6 12.a4 0-0 13.b5 Ne8 (13...Qe6 14.0-0=) 14.f4 (14.0-0 Nf6=) 14...ef3 (14...Qh4 15.Qf2 Qf2 16.Kf2=) 15.gf3 (15.Qf3 Nf6=) 15...Qh4 (15...f5 16.bc6 bc6 17.Rb1=) 16.Qf2 Qf2 (16...Qh5 17.e4=) 17.Kf2+= f5 18.Ke2 g6 (18...Nf6 19.Kd3=) 19.a5 Ng7 20.Nb3 Nd7 21.b6 Bd8 22.Kd3 Bf6 23.e4 Ne6? 24.ed5+- cd5 25.Nd5 Ndc5 26.Nc5 Nc5 27.Kc4 Nd7 28.ba7 Ra7 29.Nb6 Nb6+= 30.ab6 Ra1 31.Ra1 Rc8 32.Kb5 Rc2 33.Ra8 Kf7 34.Ba3 Ra2 35.Ra7+= Bd4 36.Rb7 Ke6 37.Re7 Kf6+= 38.Ra7 Rh2 39.Bc5 Rb2= 40.Kc4 Bc5 41.Kc5 h5 42.Ra4 Ke7 43.Kc6 g5? 44.b7+/- (44...g4 45.Ra8 gf3 46.b8Q Rb8 47.Rb8+-) 1–0. de Visser,Arno – Stabenow,Juergen, corr ICCF–T/19–F, 1979.

7.d4 Bg4 8.Be2 e4 9.Nfd2 Be2 10.Qe2 f5 11.Nc3 Nf6 12.cd6 Bd6 13.b5 0-0 14.a4 c5 15.Qc4 Kh8 16.Nb3 Nbd7=+ 17.dc5 Nc5 18.Nc5 Bc5 19.0-0 Ng4 20.Nd5 Qd6 21.Nf4 Qh6 22.Bg7 Kg7 23.h3 Bd6 24.hg4 Bf4 25.ef4 Qf4 26.gf5 Rf5 27.Ra3 h5 28.Rg3 Kh7 29.Qe6 Rf6 30.Qd5 h4 31.Re3 Rg8 32.Qb7 Rg7 33.Qe4 Kh6 34.a5 Qg5 35.Rb1 Rf4 36.Qc6 Kh7 37.Rh3 Rg6 38.Qb7 Rg7+/- 39.Qa8 Rg8? 40.Qa7+- Rg7 41.Qa8 Rg8 42.Qc6 Rg6 43.Qd7 Kg8 44.Rh2 Rf2 45.Qc8 Rf8 46.Qc4 Kg7 47.Qh4 Qc5 48.Kh1 Qf5 49.Qe1 Re6 50.Qg1 Rh8 51.Rh8 Kh8 52.Qd4 Kg8 53.Rd1 Qb5 54.Qd8 Re8 55.Qd5 Qd5 56.Rd5 (56…Ra8 57.Rf5+-) 1–0. Diener,Rudolf – Stabenow,Juergen, corr ICCF T–19–F, 1979.

7.d4 Bg4 8.h3 Bh5 =.

7.a3 0-0 8.Nc3 b6 9.Qa4 bc5 10.bc5 Qc5 11.Be2.

7.Na3 b5 8.Nc2 a5 9.a4 ab4 10.ab5 Ra1 11.Qa1.

7.Qb3 0-0 8.Bc4 d5 9.cd6 Bd6 10.a3 b5 11.Be2 a5 12.ba5 e4 13.Nd4 Ra5 14.a4 Qa7 15.Qc2 Bd7 16.Nc3 Bb4 17.Ne4 Ne4 18.Qe4 Ra4 19.Ra4 Qa4 20.Bd3 g6 21.Nc2 Bd6 22.Qa4 ba4 23.0-0 Be6 24.Ra1 Bb3 25.Nd4 Bb4 26.Nb3 ab3 27.Bc4 Bd2 28.Bb3 Rd8 29.Ra8 c5 30.Bd5 c4 31.Bc4 Bb4 32.g3 Nc6 33.Ra6 Rd6 34.Kg2 Kf8 35.Bb5 Nb8 36.Ra8 Rb6 37.Bc4 Bd6 38.Bc3 h5 39.e4 g5 40.f3 Rb1 41.Bf6 Rc1 42.Bb3 g4 43.fg4 hg4 44.e5 Bc7 45.h4 gh3 46.Kh3 Rc3 47.Ba4 Rc4 48.Bb5 Rc3 49.Ra4 Rc1 50.Rh4 Rh1 51.Kg4 Rh4 52.gh4 Bb6 53.h5 Kg8 54.Be7 Kg7 55.Bd6 Ba7 56.Bd3 Nd7 57.Bf5 Nf8 58.h6 Kg8 59.Be4 Be3 60.Kh5 Bf4 61.Bc7 Nd7 62.h7 Kg7 63.Bd6 Be5 64.Be7 f5 65.Bf5 Nf6 66.Bf6 Bf6 67.Be4 Ba1 68.Bb1 Bb2 69.Bc2 Ba1 70.Bg6 Bb2 71.Bd3 Ba1 72.Be4 Bb2 73.Kg4 Ba1 74.Kh4 Bf6 75.Kh3 Ba1 76.Kg4 Bb2 77.Kg5 Bc1 78.Kh4 Bg5 79.Kh5 Bc1 80.Bd3 Bb2 81.Kg5 Bc1 82.Kg4 Bb2 83.Bf5 Ba1 84.Kg5 Bf6 85.Kh5 Ba1 86.Kg4 Bb2 87.Bd3 Ba1 88.Kg5 Bf6 89.Kh5 Ba1 90.Kh4 Bf6 91.Kg4 Ba1 92.Bb1 Bb2 93.Kh5 Ba1 94.Kg5 Bf6 95.Kf4 Be5 96.Kf3 Ba1 97.Bf5 Bb2 ½–½. COMP – COMP, Blitz, 2002.

7.Nc3 0-0 8.a3 d6 9.cd6 Qd6 10.Qc2 Nbd7 11.Bd3.

7.Bc4 Na6 8.Ba6 ba6 9.d4 e4 10.Nh4 Qe6 11.Qb3 Nd5 12.g3 g5 13.Ng2 Rb8 14.a3 a5 15.Qa4 Qh3 16.0-0 Nf6 17.f3 ef3 18.Ne1 Bg3 19.Qc2 Ng4 20.Rf3 Bh2 21.Kh1 Bg3 22.Kg1 Ba6 23.Qg2 Qg2 24.Ng2 Bh2 25.Kh1 Be2 26.Rf5 Rg8 27.Bc3 Bd3 28.Rf3 ab4 29.ab4 a5 30.b5 Rb5 31.Nd2 Bc7 32.e4 Be2 33.Rf5 Rg6 34.Kg1 Bh2 35.Kh1 Rh6 36.e5 Bd3 37.Rf3 Be5 38.Kg1 Bh2 39.Kh1 Ne5 40.de5 Be2 41.Re3 Bf4 42.Kg1 Be3 43.Ne3 Rh3 44.Kf2 Rh2 45.Kg3 Rh4 46.Ba5 Rc5 47.Bc7 f6 48.ef6 Kf7 49.Kf2 Bh5 50.Bg3 Rh3 51.Ne4 Rb5 52.Nd6 Kf6 53.Nb5 cb5 54.Kg2 g4 55.Nd5 Kg5 56.Nf4 d5 57.Nh3 gh3 58.Kh3 Bg4 59.Kg2 h5 60.Rb1 Be2 61.Kf2 Bc4 62.Ke3 h4 63.Be5 h3 64.Kd4 Kh4 65.Bd6 Kg4 66.Rg1 Kh4 67.Be7 Kh5 68.Rg5 Kh4 69.Ke3 h2 70.Kf4 d4 71.Rg2 Kh5 72.Rh2 Kg6 73.Ke5 Kf7 74.Bb4 d3 75.Rh7 Kg6 76.Rd7 Kg5 77.Rg7 Kh4 78.Kf4 Kh3 79.Rg3 Kh2 80.Rf3 Kg2 81.Ke3 Kg1 82.Rg3 Kh1 83.Kf2 Kh2 84.Re3 Bd5 85.Bd6 Kh1 86.Re1 1–0. COMP – COMP, Blitz, 2002.

7.Bc4 e4 8.Ng5 0-0 9.f3 a5 10.Qa4 Nd5 11.Ne4 b5 12.cb6 Nb6 13.Qc2 d5 14.Qc3 f5 15.Be2 fe4 16.ba5 Na4 17.Qb3 Qh4 18.Kd1 Nb2 19.Qb2 Qf2 20.fe4 Qg2 21.Re1 Qh2 22.Nc3 Bg3 23.Rf1 Rf1 24.Bf1 Ra5 25.Kc2 Bd6 26.a4 Kh8 27.Qb3 Bc5 28.Re1 de4 29.Qf7 Qd6 30.Ne4 Qd8 31.Nc5 Rc5 32.Bc4 Rf5 33.Qa7 Ra5 34.Qd4 Nd7 35.Rg1 Qf8 36.Be6 Nf6 37.Bc8 Qc8 38.d3 c5 39.Qf4 c4 40.dc4 Ra4 41.Kd3 Ra3 42.Kc2 Qb7 43.Qd4 Qb3 44.Kc1 0–1. COMP – COMP, Blitz, 2002.

7.Bc4 e4 8.Ng5 0-0 9.f3 a5 10.Qa4 Nd5 11.Ne4 b5 12.cb6 Nb6 13.Qc2 d5 14.Qc3 f5 15.Be2 fe4 16.ba5 Na4 17.Qb3 Qh4 18.Kd1 Nb2 19.Qb2 Qf2 20.fe4 Qg2 21.Re1 Qh2 22.Nc3 Bg3 23.Rf1 Rf1 24.Bf1 Ra5 25.Kc2 Bd6 26.a4 Kh8 27.Qb3 Be6 28.ed5 Bd5 29.Qb7 Be6 30.Be2 Rc5 31.Qb6 Bg8 32.Re1 Nd7 33.Qa7 Nf6 34.Qb6 Nd5 35.Qb1 Bg3 36.a5 Nc3 37.dc3 0–1. COMP – COMP, Blitz, 2002.

7.d4 e4 8.Nfd2 d6 =.

7.d4 e4 8.Ne5 0-0 9.a3 d6 10.cd6 Qd6 11.Nd2.

7.Be2 0-0 8.d4 e4 9.Nfd2 d5 10.Nc3 Nbd7 11.b5 Re8 12.Qa4 Qe6 13.0-0 Nf8 14.bc6 bc6 15.Rfb1 a5 16.Ba3 Ba6 17.Ba6 Ra6 18.Rb7 Bh2?? 19.Kh2+- Ng4 20.Kg1 Qh6 21.Qd1 Qh2+/- 22.Kf1 Qh1 23.Ke2+- Qg2 24.Qg1 Qg1 25.Rg1 h5 26.Rb6 Rea8+/- 27.Rgb1 Nd7 28.Ra6 Ra6 29.Rb7 Ndf6? 30.Rb6 Rb6 31.cb6 Nd7 32.b7 h4 33.Bd6 1–0. pcmvr (2870) – gregorgysi (2225), net–chess.com, 2009.

7.Be2 e4 8.Nd4 d6 9.Qc2 =.

6.a3 0-0 7.d3 Bc7 8.Be2 d6 9.Nbd2 Bg4 10.0-0 Nbd7 11.Re1 d5 12.Nd4 Be2 13.Ne2 Qd6 14.Ng3 Rfe8 15.cd5 cd5 16.Nf3 Rac8 17.e4 d4 18.Nf5 Qf8 19.Bc1 b5 20.N3h4 a5 21.g4 Re6 22.Bd2 a4 23.Kh1 Qd8 24.Rg1 Nf8 25.Qf3 Bb8 26.Bh6 Ne8=+ 27.g5? Rc3?? 28.Bg7!+/- Ng7 29.Nh6 Rh6 30.gh6 Ng6 31.Ng6 fg6 32.hg7 Kg7 33.Rac1 Ba7 34.Qh3 Qc7 35.Qf1 Qf7= 36.Qe2 Qf4 37.Ra1 Bb6 38.Rg4 Qf7 39.Rg3 Bd8 40.Kg2 Bh4+= 41.Rg4 g5 42.Kh1 h6+= 43.Rgg1 Qf4 44.Ra2 Kf8 45.Rd1 Qf7 46.Rdd2 Qb3 47.Kg2 Qe6 48.Rdc2 g4 49.f3 gf3 50.Qf3 Ke7 51.Qh3 Bg5 52.Qe6+/- Ke6 53.Rc3 dc3 54.Rc2 Bd2 55.Kf1 Kf6 56.Ke2 Kg5 57.Rd2 cd2 58.Kd2 Kf4 59.Ke2 h5 60.Kf2 (60…h4 61.h3+-) 1–0. Dupont – Hagemeister, corr, 1986.

6.a3 0-0 7.Be2 Bc7 8.Nc3 d6 9.0-0 Bf5 10.Nh4 Be6 11.Nf3 Nbd7 12.d3 d5 13.e4 d4 14.Na2 b5 15.c5 a5 16.Nc1 a4 17.Qd2 h6 18.Nh4 Rfe8 19.g3 Bh3 20.Ng2 Qe6 21.Re1 Ng4 22.Bg4 Bg4 23.Rf1 f5 24.f3 Bh3 25.Rf2 Nf6 26.Ne2 g5 27.Rd1 Kh7 28.Bc1 Rg8 29.Qb2 Rg7 30.Kh1 Rag8 31.Ng1 Bg2 32.Rg2 g4 33.Rf2 f4 34.gf4 ef4 35.Qd4 Be5 0–1. algernon (2565) – katchum (2535), net–chess.com, 2014.

6.a3 Bc7 7.Be2 0-0 8.0-0 a5 9.b5 d5 (9...e4 10.Ne1=+) 10.cd5 (10.b6 Bb6 11.Be5 Nbd7=) 10...cd5 11.a4 Bg4 12.h3 (12.Ba3 Bd6=) 12...Bh5 13.Nc3 Nbd7 14.g4 Bg6 (14...e4 15.Ba3 Qe6 16.Bf8 (16.gh5 ef3 17.Qb1 Qh3 18.Qh7 Nh7 19.Bf8 Qg2) 16...Bg4 17.Nd4–+) 15.g5+= Ne4 (15...Ne8 16.Nd5 Qe6 17.Nc7 Nc7 18.Nh4+=) 16.Nd5+/- Qd6 17.Nc7 Qc7 18.Rc1 Qd8 19.h4 Bh5? (better is 19...Qe7!?+/-) 20.Ba3+- (< 20.Ne5 Be2 21.Qe2 Ne5 22.Be5 Qd2+-; 20.Be5?! Ne5 21.Ne5 Be2 22.Qe2 Nd2+/-) 20...Re8 21.d3 Ng5 22.Ng5 Be2 23.Qe2 h6 24.Nf3 Nb6 25.Qc2 (25.Bb2!? e4 26.de4 Re4+-) 25...Qf6 26.Kg2 Qg6 27.Kh1 Qf5 28.Nh2 Rac8 29.Qd2 e4 30.Qa5 Rc1 31.Bc1 (31.Qb6?? Rf1 32.Nf1 Qf2–+ (32...ed3?! 33.Qd6–/+)) 31...Nd5 32.d4 (32.de4 Qe4 33.f3 Qh4+-) 32...b6 33.Qd2 Re6 (33...Qh3 34.f3+-) 34.Qc2 g5 (34...Nb4 35.Qc8 Kh7 36.f3+-) 35.hg5 hg5 36.Qc8 Kg7 37.Bb2 Rh6 (37...Rf6 38.Qf5 Rf5+-) 38.Qf5 (38…Nc3 39.Bc3+-) 1–0. Bonetti,Shane – Juehe (1610), ICC, 2002.

6.b5 Bc7 7.Nc3 0-0 8.d4 d6 9.Be2 Bg4 10.0-0 Ba5 11.de5 de5 12.h3 Bf3 13.Bf3 e4 14.Be2 Bc7 15.Qc2 Nbd7 16.a4 Rfe8 17.a5 Qe5 18.g3 Qg5 19.Kg2 Nc5 20.Na4 Nd3 21.Bf6 Qf6=+ 22.Nc3 Qg6 23.a6 Nf2 24.Rf2 Qg3 25.Kf1 Qh3 26.Rg2? Re6–+ (27.Ne4 Rg6–+; 26...Qe3 27.ab7 Rab8 28.bc6 Qf4 29.Kg1 Bb6 30.Kh1 Qh6 31.Rh2 Qc6 32.Rf1–/+) 0–1. Wolf,M – Kampfhenkel,U, corr DDR cp, 1982.

6.c5 Bc7 7.Bc4 (7.Na3 b5 8.Nc2 a5=) 7...0-0 8.0-0 (8.Nc3 b5 9.Bb3 a5=) 8...d5 (8...Na6 9.Qb3=+) 9.cd6= Bd6 10.a3 (10.Qc2 a5 11.ba5 Nbd7=+) 10...a5 (10...e4 11.Bf6 Qf6=+ (worse 11...gf6 12.Nd4=)) 11.b5? (better 11.Nc3!?=+) 11...e4–/+ 12.Bf6 Qf6 (12...gf6?! 13.Nd4 c5 14.Nc2=+) 13.Nd4 cb5 (better 13...c5!? 14.Nc2 Qh6–+) 14.Bb5=+ Nc6 15.Bc6 (15.Bc6 bc6 Combination; 15.Nc6 Qa1 Pinning (15...Qa1 Deflection)) 15...bc6 16.Nc3 Qh6 17.f4 (17.g3 c5 18.Ndb5 Be5=) 17...ef3 18.Nf3 Re8 (18...Rb8 19.Rf2=+) 19.Qa4 Bf5 (19...Ba6 20.Rf2=+) 20.Qh4 (20.Qc4!?=+) 20...Qh4–/+ 21.Nh4 Bd3 22.Rfc1 Rab8 23.Na4 (23.Nf3 c5–/+) 23...Be5 24.Ra2?? (better 24.Nc3–/+) 24...Rb1–+ 25.Rb1 Bb1 26.Rb2 Bb2 27.Nb2 Ba2 28.Kf2 (28.Nf5 Rd8 29.Nd4 c5–+) 28...Rb8 29.Nd1 Rb3 30.Nf5 (30.a4 Ra3–+) 30...Rd3 31.Ke2 (31.Ke1 Ra3 32.Ne7 Kf8 33.Nc6 Bd5–+) 31...Ra3 32.Ne7 (32.Nc3–+) 32...Kf8 33.Nc6 Bd5 (better 33...Bc4!? 34.Ke1 Ra1 35.Nd4–+) 34.Ne5 (34.Nd4 Bc4 35.Kf2 Rd3–+) 34…Bg2 0–1. Zecha,Gerhard – Gaprindashvili,Valerian (2390), Bayern–chI Bank Hofmann 3rd, 1999.

6.Be2 Bc7 7.a3= d5 8.0-0 Bf5 9.Qb3 0-0 10.d3 Nbd7 11.Nbd2 Qd6 12.h3 b6 13.Rfd1 Bg6 14.Rac1 Rad8 15.cd5+= cd5 16.e4 Bb8 17.ed5 Qd5 18.Qd5 Nd5= 19.Nc4 Nf4 20.Kf1 e4 21.de4 Be4 22.Ne3 Ne2 23.Ke2 Bf3 24.Kf3+= Ne5 25.Ke2 Rfe8 26.Kf1 Nd3= 27.Rc2 Nb2 28.Rb2 g6 29.Ke2 Be5 30.Rbd2 (30.Rd8 Rd8 31.Rc2 f5=) ½–½. Annegarn,Alexander – Fox,Daniel, NRW–ch U14 Winterberg, 2002.

6.Be2 e4 7.Nd4 Bb4 8.a3 =.

6.Nh4 Bb4 7.Nf5 Qf8 8.Be5 d5 9.Qc2 Nbd7 10.Bd4+= Bc5 11.cd5 Bd4 12.Nd4 Nd5 13.Bc4 N5b6 14.Bb3 Qc5 15.Qe4 Qe5 16.Nc3 0-0 17.Nf3 Qh5 18.0-0 Nc5= 19.Qe7 Bg4 20.Nd4 Rab8?? 21.f3+- Nb3 22.ab3 Bd7+/- 23.Ne4 Qh6 24.Nd6 a6 25.Ra5 Nc8 26.Nc8 Bc8 27.Re5 Qg6 28.Rg5+/- Qh6 29.Rc5 Be6+= 30.Rfc1 Bd5 31.Nf5+/- Qg6 32.e4+- Bb3 33.Ng7 Bd5 34.ed5 cd5 35.Rd5 Qb6 36.d4 Kg7 37.Rd6 Qa5?? 38.Rc5+- Qa1 39.Kf2 Qa2 40.Kg3 Qd2 41.Rg5 Qg5 1–0. COMP – COMP, Blitz, 2002.

4.a3 a6 5.e4 c5 6.Bc4 (6.bc5 Bc5 7.d4 Qb6+=) 6...cb4= 7.d4 Nc6 (7...ba3 8.Na3 ed4 9.Qd4 Qa5 10.Bc3=) 8.de5+= Be5 9.Ne5 fe5 10.ab4 Qe7 11.0-0 (better 11.c3+/-) 11...Nb4?? (better 11...Qb4 12.Qd5 Qe7=) 12.Ba3 Nf6 13.c3 b5 (13...Qc5 14.Nd2 b5 15.Bb4 Qb6+-) 14.Bb4 Qd8 15.Bb5! Bb7 (15...ab5 16.Ra8 Pinning (16.Ra8 Deflection)) 16.Ba4 Ne4 (16...Qb6+-) 17.Qh5 g6 18.Qe5 Kf7 19.Bb3 (19.Bb3 d5 20.Qe4+-) 1-0. PEREIRA – Whitak, internet, 2021.

4.a3 b5 5.e3 a6 6.c4 bc4 7.Bc4 Bb7 8.Nc3 Bf3 (8...Ne7!?+=) 9.Qf3+/- c6 10.0-0 Bc7 11.Nd5! d6 (11...cd5 12.Qd5 Combination) 12.d4 Ne7 13.Nc7 Qc7 14.de5 de5 15.Rad1 Nd7 16.Qg4 Nb6? (better is 16...g6+-) 17.Qg7 Nc4 (17...Rf8 18.Be2 Ra7+-) 18.Qh8 Kf7 19.Qa8 Nb2 20.Qd8 (better is 20.Rb1!? Nc4 21.Rbc1 Nb6 22.Qa6 f5+-) 20...Qd8 21.Rd8 Nc4 22.Ra1 h6 23.Ra8 Nd2 24.Rd1 Ne4 25.Ra6 c5 (25...Ke6 26.Rd8+-) 26.Rd8 Ng5 (26...cb4 27.Ra7 b3+-) 27.Ra7 cb4 28.ab4 Ne6 (28...Ne4 29.Rdd7 Kg6 30.Re7+-) 29.Rdd7 1–0. Fournier,Frederic – FOS2006, queenalice.com, 2007.

4.a3 b5 5.e4 Bb7 6.Bd3 c6 7.c4 Ne7 8.cb5 cb5 9.Bb5 a6 10.Bc4 Be4 11.0-0 a5 12.d3 Bf3 13.Qf3 Nbc6 14.b5 Nd4 15.Bd4 ed4 16.a4 Qc7?? 17.Qa8 Qc8 18.Qc8 Nc8 19.Re1 Ne7 20.Nd2 Bf4 21.Nf3 d5 22.Bd5 Be5 23.Ne5 fe5 24.Re5 Rf8 25.Rc1 Rf6 26.Rc7 1–0. Trkn – benj, itsyourturn.com, 2000.

4.a3 b6 5.e4 Qe7 6.Bc4 Bb7 7.Nc3 Nc6 8.Nd5 Qf8 9.0-0 0-0-0 10.d3 Nge7 11.c3 h5 12.a4 a6 13.b5 Na5 14.Ne7 Qe7 15.ba6 Bc6 16.Bd5 Kb8 17.Nh4 Bd5 18.ed5 Qf7 19.c4 f5 20.Bc3 Ka7 21.Qb1 Rb8 22.Nf3 Rhe8 23.Re1 Qf6 24.Qb2 g5 25.Ne5 Be5 26.Re5 Rg8 27.Rae1 g4 28.Re7 Qd6 29.Bb4 Qf4 30.Rd7 h4 31.Ree7 Ka6 32.Rc7 Nb7 33.Bc5! Qc7 34.Rc7 bc5 35.Qb5 Ka7 36.Qa5# 1–0. pierre – hris, ChessHere.com, 2005.

4.a3 e4 5.Nd4 Be5 6.e3 Ne7 7.d3 ed3 8.Bd3 0-0 9.Nd2 d5 10.0-0 Nbc6 11.N2b3 Nd4 12.ed4 Bd6 13.c4 dc4 (13...Bf5 14.Bf5 Nf5 15.cd5+=) 14.Bc4+/- Kh8 15.Re1 c6 16.Qf3 Qc7 (16...b6 17.Rac1+=) 17.g3+/- b6 18.Rac1 Re8 (better is 18...Bd7!?+/-) 19.d5+- Bb7 20.Qh5 a5?? (better is 20...Rac8+-) 21.Bd3 g6 22.Bf6 Kg8 23.Qg5 Nd5 24.Re8 Re8 25.Bg6! Nf6 26.Be8 Qg7 27.Qg7 Kg7 28.Bc6 Bc8 29.Bg2 Be6 30.Na5! ba5 31.ba5 Ba3 32.Rc7 Kg6 33.a6 (33.a6 Bd6 34.Rc6+-) 1–0. Recasens Sanchez,JA (2120) – Gimeno Diaz,F, AEAC W/X COPA/Pr–04, 2008.

4.a3 e4 5.Nh4 Be5 +=.

4.a3 Ne7 5.e4+= a6 6.Bc4 b5 7.Ba2 a5 8.Nh4 ab4 9.ab4 Bb7 10.Qg4 g6 11.c3 c5 12.bc5 Bc5 13.0-0 d5 14.d3 de4–/+ 15.de4 Bc8 16.Qe2+= Ra5 17.Nd2 Qb6 18.Nb3 Ra7 19.Rfd1 Ba6 20.Qf3 Rf8? 21.Nc5 Qc5 22.Qh3?? b4 23.Rdc1 Nbc6 24.Nf3 h5 25.Bb3 Na5?? 26.Qe6?? Bc8 27.Ba4+- Bd7?? 28.Bd7 Rd7 29.cb4 Qb4 30.Rc8 Rd8 31.Ba3 Qb7 32.Rd8 Kd8 33.Rd1 Ke8 34.Nh4 Rg8 35.Be7 Qe7 36.Qg8 Qf8 37.Qg6 Ke7 38.Nf5 Ke6 39.Rd6 Qd6 40.Nd6 Kd6+- 41.Qf6 Kd7 42.h3 Nb7 43.g4 Nd8 44.gh5 Ke8 45.h6 Nf7 46.Qg7 Ke7 47.h7 Ke6 48.h4 Ke7 49.h5 Ke6 50.h6 Ke7 51.h8Q Ke6 52.Qf6 Kd7 53.Qhg7 Kc7 54.Qgf7 Kc8 55.Qh8 1–0. euforia (1805) – PhilWarrior, internet, 2007.

4.a3 Bf8 5.e3 (5.e4!? Ne7 6.Nc3+-) 5...d5+/- 6.Be2 Bg4 (6...Ne7 7.0-0+/-) 7.d3 (7.h3 Be6+/-) 7...a6 8.Nbd2 Nc6 9.0-0 Qd7 10.c4 Be6 11.d4 0-0-0? (11...ed4 12.b5 (worse is 12.ed4 dc4 13.Bc4 Bc4 14.Nc4 0-0-0+=) 12...ab5 13.cb5+/-) 12.de5 (better is 12.b5!? Nb8 13.cd5 Qd5+-) 12...Be7 13.c5 (better is 13.b5 ab5 14.cb5 Ne5 15.Ne5 fe5 16.Qa4+-) 13...b5?? (better is 13...Nh6+/-) 14.cb6!+- cb6 (14...Kb8 15.Rc1 cb6 16.Ba6+-) 15.Ba6 Kb8 16.Bb5 Rc8 17.Rc1 Bd8 18.Qa4 Nge7 19.Nd4 Kb7 20.Ba6 Kc7 21.Nb5 Kb8 22.Bc8 Kc8 23.Qa8 1–0. Faybish,Benjamin – Van Eynde,Maxim, Prague CZE, European Ch Boys U8, 2012.

4.b5 b6 5.e3 c6 6.c4 c5? 7.Be2 a6+= 8.a4 g5 9.Nc3 Bb7 10.0-0 e4 11.Ne1 Ne7 12.d4 Nf5 13.d5 Qe7 14.Bh5 Kd8 15.Qc2 Qe5 16.g3+- Ng7?? 17.Ne4 Qf5 18.Bf6 Kc7 19.Bg7 Rg8 20.Nd6 Qc2 21.Nc2 Kd6 22.Bb2 a5 23.Rfe1 g4 24.f3 gf3 25.Bf3 Kc7 26.e4 d6 27.e5 Rf8 28.ed6 Kd6 29.Be5 Kd7 30.Bg4 Kd8 31.Bf4 Rg8 32.Bh3 h5 33.Re3 h4 34.Rae1 Bc8 35.Bc8 Kc8 36.Re8 Re8 37.Re8 Kb7 38.Rb8 Rb8 39.Bb8 Kb8 40.gh4 Kc8 41.h5 Kd8 42.Kf2 1–0. Skaug,Thorbjorn – Martinsen,Egil, Fredrikstad CC–ch, 2003.

4.c3 =.

4.Bc3 Be7=.

4.e4 Bb4 5.c3 Be7 6.Bc4 +=.

4.e4 Bb4 5.Bc4 Ne7 6.c3+=.

4.e4 Ne7 5.a3 a6 6.c4 b5?? 7.c5+- Bb7 8.cd6 Nec6 9.dc7 Qc7 10.d4 d6 11.Nc3 Nd7 12.Rc1 Ne7 13.Nb5 Qd8 14.Nd6 Kf8 15.Nb7 Qb8 16.Na5 Nb6 17.de5 fe5 18.Ne5 Qd8 19.Qf3 Ke8 20.Qf7# 1–0. amador – mduerr (1685), net–chess.com, 2007.

4.e4 Ne7 5.c3 c6+=.

4.e4 Ne7 5.Bc4 Bb4+= 6.a3 (6.c3 d5 7.ed5 Bd6=) 6...Ba5 7.0-0 Nbc6 (7...c6 8.Ne5 fe5 9.Be5+=) 8.d4 d6 (8...ed4 9.Bd4 Rb8 10.Be3+=) 9.de5 (9.c3 Bg4+=) 9...de5 (worse is 9...fe5 10.Ng5 Rf8 11.Qh5 g6 12.Qh7+/-) 10.Qe2 Bd7 (10...Ng6 11.Rd1 Qe7 12.Bc1+=) 11.Rd1 Qc8 (11...Ng6 12.Nc3+=) 12.Nc3 Be6 13.Nd5 0-0 14.Rab1 Bb6 (14...a6 15.a4+=) 15.a4 (better is 15.Rd2=) 15...Na5?? (better is 15...Ng6+=) 16.Ne7+- Kh8 17.Nc8 Bc4 18.Qe1 Rac8 (18...Rfc8 19.Bc3 Nc6 20.a5+-) 19.Bc3 Nc6 20.a5 Bc5 21.Rb7 Ba6 22.Rbb1 Rcd8 (22...Rb8 23.Nd2+-) 23.Rd8 Rd8 24.Ba1 Bb4 (24...Bd6 25.Qc3 Ne7 26.Bb2+-) 25.Rb4 Na5 (25...Nb4 26.Qb4 c5+-) 26.Ra4 1–0. DEFFM – GuestCJDD, freechess.org, 2018.

4.a3 e4 5.Nd4 (5.Nh4 Bf8=+) 5...Be5 6.e3 Bd4 (6...d5!?=+) 7.Bd4= d5 (7...Nc6 8.Bf6 Qf6 9.Nc3=) 8.c4 (8.Nc3 Nbd7+=) 8...c6 (8...Nc6!? 9.Bb2 Bg4=) 9.cd5+= cd5 10.Nc3 0-0 11.f3 (11.Bf6 Qf6 12.Nd5 Qe5+=) 11...Nc6 (11...Be6 12.Bf6 Qf6 13.fe4+=) 12.Bf6 Qf6 13.fe4 (13.Nd5 Qd8 14.Nc3+= (14.fe4? Qh4 15.g3 Qe4 16.Nf6 gf6–+)) 13...d4= 14.ed4 Nd4 15.Rc1 (15.Bd3 Bh3 16.Rf1 Qh4 17.g3 Qd8=) 15...Qg5 16.Rb1 (better 16.Kf2!?=) 16...Bg4–/+ 17.Qc1 f5 (better 17...Nf3!? 18.Kd1 Nh2 19.Kc2 Nf1 20.Qf1 Rac8–/+) 18.Bc4= Kh8 19.Bd5?? (better 19.0-0 Nf3 20.Kh1 Nd2 21.Rf2 Ne4 22.Qg5 Ng5 23.Bd5=) 19...fe4–+ 20.Rb2 (20.d3 Qh4 21.g3–+) 20...Nf3! 21.gf3 ef3 (better 21...Rf3!? 22.Ne2 Qd5–+) 22.Kf2–/+ (22.Bb7 f2 23.Kf1 Rae8 24.Ne4 Qb5 25.Qc4 Qc4 26.Kg2 f1Q 27.Rf1 Qf1 28.Kg3 Qh3) 22...Qh4 23.Ke3 Rfe8 (better 23...Rae8!? 24.Ne4 Qg5 25.Kf2 Qd5–+) 24.Be4= Bf5 25.d3 Be4 26.Ne4 f2?? (26...Rad8 27.Qb1 Qg5 28.Kf2 Qg2 29.Ke3 Qg5 30.Kf2 Qg2 31.Ke3 Qg5=) 27.Rb1?? (better 27.Rf2 Rad8 28.Qc4+-) 27...Rac8 28.Qf1?? (28.Qb2 Qh3 29.Ke2= (29.Kf2?? Re4 30.de4 Rf8 31.Ke1 Qf3–+)) 28…Rc2–+ (28...Rc2 29.Qe2 Re2 30.Ke2 Rf8–+) 0–1. Bonetti,Shane – heusen, ICC, 2002.

4.b5 e4 5.Nd4 =.

4.b5 Qe7 5.e3 0-0 6.Bc4 b6 7.0-0 c6 8.Nc3 Bb7 9.a4 a6 10.d4 ab5 11.ab5 cb5 12.Ra8 Ba8 13.Nb5 Na6?? 14.de5+- Be5 15.Be5 Bf3 16.Qd6 Qd6 17.Bd6 Rc8 18.gf3 Rc4 19.Ra1 h6 20.Ra6 Rc2 21.Rb6 Nd5 22.Rb8 Kh7 23.Nd4 Rc1 24.Kg2 Rd1 25.Rb5 Nc3 26.Rb7 Ne2 27.Rd7 Rg1 28.Kh3 Nd4 29.ed4 h5 30.Rf7 Rg6 31.Be5 Kh6 32.Bg7 Rg7 33.Rg7 Kg7 34.Kh4 Kg6 35.d5 Kf6 36.Kh5 Ke5 37.Kg5 Kd5 38.f4 Ke6 39.h4 Kf7 40.f5 Kg7 41.h5 Kg8 42.Kg6 Kf8 43.f6 Kg8 44.h6 Kh8 45.f4 Kg8 46.f5 Kh8+- 47.Kf7 Kh7 48.Ke8 Kh6 49.f7 Kg5 50.f8Q Kf4 1–0. guest991 – Daniel999 (1640), ICC, 2003.

4.e3 0-0 5.a3 (better is 5.Ne5 Bb4 6.a3=) 5...Ng4 (5...e4 6.Nh4=) 6.Bd3 (6.h3!? Nf6 7.Ne5 Be5 8.Be5+/-) 6...Re8= 7.Nc3 (7.Bf5 Nf6=) 7...Nc6 (7...Bf8 8.Bf5 Nh6 9.Bh3=) 8.b5 (8.Ne4 Nf6+/-) 8...Na5 9.0-0 (9.Ne4 Bf8 10.Neg5 g6+=) 9...h5 (9...Bf8!?=) 10.h3 Nf6 11.Ng5 c6 (11...Be7 12.f4 d6 13.Be2+/-) 12.Nce4 (12.Nge4 Ne4 13.Ne4 Bf8 14.Qh5 g6+/-) 12...Ne4 (12...Bc7 13.bc6 dc6 14.Nf6 gf6 15.Ne4+/-) 13.Ne4 Be7 (13...Bf8 14.Qh5 g6 15.Qf3+/-) 14.Be5+- d5 15.Nc3 (better is 15.Ng3 g6 16.Nh5+-) 15...Bh4? (better is 15...g6!?+-) 16.Qh5 Re5 (16...Bf6 17.f4+-) 17.Qh7 (better is 17.Qe5!? Qe7 18.Qe7 Be7+-) 17...Kf8 18.Qh8 Ke7 19.Qh4 f6 (19...g5 20.Qd4 Qd6 21.Qb4+-) 20.bc6 Nc6 (20...bc6 21.f4 Re6 22.Rab1+-) 21.f4 Re6 22.Qh7 Kd6 (22...Qf8 23.Nd5 Kd8 24.f5+-) 23.Qg7 Bd7 (23...Qe7 24.Qg6+-) 24.Nb5 (24.Bf5!? Re3 25.de3 Bf5+-) 24...Kc5 25.Rab1 a6 26.Nc3 b5 27.Qg3 (27.Bb5 Kd6+-) 27...Kb6 (27...Qg8 28.Qf3 Ree8 29.e4+-) 28.a4 (28.Nd5 Kc5 29.e4 Kd6+-) 28...b4 29.Nd5 Kc5 (29...Ka5 30.c3 Rb8 31.Bc4+-) 30.c4 a5 (30...bc3 31.Nc3 Kd6 32.f5 Re5 33.Bc4+-) 31.Bf5 Rd6 (31...Kd6 32.Be6 Ke6 33.f5 Kf7 34.Qg6 Kf8 35.Nf6 Qf6 36.Qf6 Ke8 37.Qh8 Kf7 38.Qh7 Ke8 39.Qg8 Ke7 40.f6 Kd6 41.c5 Kc5 42.Qa8 Nd4 43.Rbc1 Nc2 44.Rc2 Kb6 45.Qb8 Ka6 46.Rc7 Bh3 47.Qb5) 32.d4 Kc4 (32...Nd4 33.ed4 Kc6+-) 33.Rfc1 Kd5 34.Qf3 1–0. Janek – Ferenc, internet, 2017.

4.e3 e4!? 5.Nd4 Bb4 –/+.

4.Be5 Be5 5.Ne5 Nc6 6.Nc6 dc6 =.

4.Ne5 Bb4 5.a3 Be7 6.e3 =.

4.Ne5 Bb4 5.Nd3 Be7 =.

4.Ne5 Bb4 5.e3 d5 =.

4.Ne5 Nc6 5.Nc6 dc6 6.a3 a5 7.ba5 0-0 8.e3 Ra5 9.Be2 Re8 10.0-0 Bf5 11.d3 Rb5 12.Qc1 Ng4 13.h3 Qh4? (Better is 13...Nf6!? 14.Nd2 Qe7+/-) 14.c4+- (14.Bg4 Bg4 15.f4 Bh3–/+) 14...Bh2 (14...Rb2 15.Bg4 Rb1 16.Rb1 Bg4=+) 15.Kh1+= Nf2 16.Kh2 Rb2 17.Qb2 Re3 18.Bf3?? Rf3! 19.Qf2 Rf2 20.Rf2 Qf2 21.Nc3 Bd3 22.Rg1 Qc2 0–1. kolya (2000) – ABracun (2015), GameColony.com, 2002.

4.Ne5 Be5 5.Be5+= d6 6.Bd4 Nc6 7.Bc3 Bg4 8.b5 Ne5 9.d4 Nc4 10.Qd3 d5 11.e3 a6 12.Be2 ab5=+ 13.a4 ba4 14.Na3 b6 15.Nc4=+ dc4 16.Qc4 Qd5? 17.Ra4 b5?? 18.Qb5 Kd8?? 19.Qd5 Nd5 20.Ra8 Kd7 21.Bg4 Kc6 22.Rh8 Nc3 23.0-0 g6 24.Rh7 f5 25.Bf3 Kb6 26.Ra1 g5 27.Rh6 c6 28.Rc6 Kb5 29.Ra8 g4 30.Rb8 Ka4 31.Ra6# 1–0. Ramos Bonilla,I – Dombach,G, Telecomm, 1995.

5.b5 Be5 6.Be5 A) 6...Re8 7.Bb2 d5 8.e3 Bg4 9.Be2 Be2 10.Qe2; B) 6...d6 7.Bb2 Bg4 8.h3 Be6 9.e3 a6 10.Qf3.

5.b5 Qe7 6.Nd3 Bc5? 7.Nc5+- Qc5 8.e3 Qe7 9.Bd3 d6+/- 10.Bf6 Qf6 11.Nc3 Nd7 12.0-0 Nc5 13.Be2 Be6 14.d4 Bd7?? 15.Nd5+- Qg6 16.Ne7 (16...Kh8 17.Ng6 fg6 18.dc5+-) 1–0. pereira – teqtr, internet, 2009.

5.b5 Qe7 6.d4 A) 6...Re8 7.e3 a6 8.a3 ab5 9.Bb5 Nc6 10.Nc4; B) 6...Bb4 7.c3 Ba5 8.Nc4 Bb6 9.e3 d6 10.Bd3; C) 6...Nd5 7.Nd2 Ba3 8.Ba3 Qa3 9.e3 d6 10.Nec4; D) 6...a6 7.e3 ab5 8.Bb5 Bb4 9.c3 d5 10.Bd3.

5.b5 Be7 A) 6.Nc3 A1) 6...Re8 7.e3 a6 8.ba6 Na6 9.Be2 d5 10.0-0; A2) 6...d6 7.Nf3 a6 8.e3 Re8 9.a4 Bg4 10.Be2; A3) 6...a6 7.e4 Bb4 8.ba6 d6 9.Nd3 Bc3 10.Bc3; A4) 6...d5 7.e3 Bd6 8.Nf3 Re8 9.Be2 Nbd7 10.0-0; B) 6.e3+= B1) 6...a6 7.ba6 Na6 8.Be2 d6 9.Nf3 d5 10.0-0; B2) 6...d6 7.Nf3 a6 8.ba6 Na6 9.Be2 d5 10.0-0.

5.b5 Qe7 6.Nf3 Bc5 7.d4 Bb4 8.c3 Ba5 9.Nbd2 a6 10.a4.

5.b5 Re8 A) 6.Nd3 A1) 6...Be7 7.e3 a6 8.ba6 Na6 9.Be2 d5 10.0-0; A2) 6...b6 7.Nc3 a6 8.e3 ab5 9.Nb5 Be7 10.Be2; A3) 6...a6 7.Nc3 Be7 8.ba6 Na6 9.e3 d5 10.Be2; B) 6.Nf3 B1) 6...Be7 7.e3 a6 8.Nc3 ab5 9.Bb5 c6 10.Be2; B2) 6...Bc5 7.e3 a6 8.Nc3 d5 9.Be2 ab5 10.Nb5; B3) 6...Bf8 7.e3 a6 8.Nc3 d5 9.Be2 ab5 10.Nb5; B4) 6...Bb4 7.e3 d5 8.Be2 a6 9.a4 c5 10.bc6.

5.e3 Nc6 6.Nc6 bc6 7.a3 c5 8.b5 Ne4 9.Qf3 Bb7 10.d3 Qe8 11.de4 Be4 12.Qe2 Rb8 13.Qc4 c6 14.a4 Qe7 15.Nd2 Qg5 16.Qe4 Rbe8 17.Qf3 Qh6 18.Ne4 c4 19.Bc4 Bb4 20.Bc3 Be7 21.0-0 Bd8 22.Bg7 Qh4 23.Bf8 Bc7 24.Bd6 Bd8 25.Qf7 1–0. Trkn – Natural man, itsyourturn.com, 2000.

4.fe5 d5 (4...d6 5.a3 Bc5 6.Nf3 de5 7.Be5 Nf6 8.d4 Be7=; 4...Nh6 5.Nf3 Ng4 6.Nc3 Qe7 7.e4 Bc3 8.Bc3 Nc6=; 4...Nc6 5.Nf3 Nh6 6.Nc3 0-0 7.e3 Re8 8.Nd5 Ba5=; 4...Ne7 5.a3 Bc5 6.d4 Bb6 7.e4 0-0 8.Nf3 d5=; 4...f5 5.a3 f4 6.e3 Qh4 7.Ke2 Be7 8.Nf3 Qh6=) 5.ed6 Bd6 6.Nf3 Nf6 7.e4 Ne4 8.Bg7 Rg8 =+.

4.Be5 f6 5.Bb2 Nh6 (5...d5 6.e3=) 6.e3 (6.a3 Bc5=) 6...0-0 7.Nf3 d6 8.Nh4 (8.c3 Bc5=) 8...Bg4 9.Be2 Be2 10.Qe2 Nc6 11.a3 Bc5 12.d4 (12.Qc4 Nf7=) 12...Bb6=+ 13.d5 (13.0-0 Re8=+) 13...Ne7 14.Nd2 Nef5 (14...Nd5 15.Qc4 c6 16.e4-+) 15.Nf5=+ Nf5 16.g4?? (better 16.e4 Ne3 17.Nf1 Nf1 18.Rf1=+ (worse 18.Qf1 f5-+)) 16...Ne3-+ (worse 16...Be3 17.gf5 Re8 18.0-0-0+/-) 17.h4 (17.Ra2 Re8 18.Qf3 Ng4 19.Kd1 Nf2 20.Kc1 Nh1 21.Qh1 Qe7-+) 17...Re8 18.Qb5 (18.Qf3 Nc4 19.Kd1 Re3-+) 18...Nc2 (better 18...Ng4!? 19.Kf1 Qe7 20.Qd3-+) 19.Kd1 Na1 20.Ba1 Qe7 (20...a6 21.Qa4-+) 21.Kc2 (21.g5 f5-+) 21...a6 22.Qd3 (22.Qc4 Qe3-+) 22...Ba5 (better 22...Qd7 23.g5 Re3 24.Qc4-+) 23.g5 (23.Nb3 Qd7 24.Na5 Qa4 25.Nb3 c5-+ (25...Qa3?! 26.g5-+; 25...Qf4?! 26.Rh3-+)) 23...Bd2 (23...Qe2 24.Rd1 fg5 25.hg5-+) 24.Kd2 fg5 25.fg5 (25.hg5 Qe4 26.Qe4 Re4-+) 25...Qe4 26.Qc3 (26.Qe4 Re4 27.Rc1 Rc8-+) 26...Qe2 (better 26...Qg2 27.Kc1 Qh1 28.Kb2 Re2 29.Qc2 Rae8 30.Kb3 Rc2 31.Kc2 Re2 32.Kc3 Qf3 33.Kc4 Re4 34.Bd4 Qa3 35.g6 b5) 27.Kc1 Qe3 28.Kc2 (28.Qe3 Re3 29.Bb2 Rf8-+) 28...Qc3 (better 28...Qf2!? 29.Kb1 Qf5 30.Qc2 Qd5 31.Rd1-+) 29.Bc3 c6 (29...Re2 30.Kb3-+) 30.dc6 (30.Rb1 b5-+) 30...bc6 31.h5 d5 32.g6 (32.h6 Re2 33.Kd1 Rg2 34.Bg7 Rb8-+) 32...Re2 (32...hg6 33.Rg1 gh5 34.Rg7 Kf8 35.Rh7-+) 33.Kd3 Re4 (33...Rae8 34.gh7 Kh7 35.Bd4-+) 34.gh7 Kh7 35.Rg1 Ra7 36.a4 (36.Rg6 Rf7 37.Rc6 Rf3 38.Kd2 Rc4 39.Rc4 dc4-+) 36...Rf7 37.a5 Rf3 38.Kd2 Rc3! 39.Kc3 Ra4 40.h6? (40.Rg6-+) 40...gh6 41.Rf1 (41.Re1 h5-+) 41...Ra5 (41...c5 42.Rf5 d4 43.Kb3 Ra5 44.Rf6-+) 42.Rf6 (42.Kd4 Ra4 43.Ke5 d4-+) 42...c5 43.Rf7 (43.Rd6 c4-+) 43...Kg6 44.Rd7 d4 45.Kc4 Ra4 (better 45...h5 46.Rd8-+) 46.Kc5 a5 (better 46...h5 47.Kd5-+) 47.Kb5 Rb4 (47...Ra3!? 48.Rd6 Kf5 49.Rd4-+) 48.Ka5 Rc4 49.Kb5 Rc1 50.Rd4 h5 51.Rd6 Kg5 52.Rd5 Kg4?? (better 52...Kh6 53.Rd6 Kg7 54.Rd7 Kf6 55.Rd6 Ke5-+) 53.Rd4= Kg3 54.Rd3 Kf2 55.Rd2 Ke3 56.Rh2 Rb1 57.Kc4 Rc1 58.Kb3?? (58.Kb5 Kf4 59.Rh5 Ke4=) 58...Rb1 (58...Rc5 59.Rh3 Kf2 60.Rd3-+) 59.Kc2?? (better 59.Kc4=) 59...Rb5-+ 60.Kc3 Rc5 61.Kb4 Rg5 (61...Rf5 62.Kc3-+) 62.Kc4 Rg4 63.Kd5 h4 64.Ke5 Kf3 65.Kf5 Rf4 66.Kg5 Rg4?? (better 66...Kg3 67.Rh1 Rg4 68.Kf5 Rd4-+) 67.Kh5 Kg3 68.Rh4?? (better 68.Ra2=) 68...Rh4 69.Kg5 (69.Kg6 Rf4 70.Kg5 Kf3 71.Kh5 Rf5 72.Kh6 Kg4 73.Kg6 Rf3 74.Kh6 Kf5 75.Kg7 Kg5 76.Kh7 Kf6 77.Kg8 Rh3 78.Kf8 Rh8) 69...Re4 (69...Rf4 70.Kh6 Rg4 71.Kh5 Kf4 72.Kh6 Kf5 73.Kh5 Re4 74.Kh6 Re7 75.Kh5 Rh7) 70.Kf5 Ra4 (70...Re2 71.Kg6 Re5 72.Kg7 Rf5 73.Kg6 Kg4 74.Kh6 Rg5 75.Kh7 Kh5 76.Kh8 Kg6 77.Kg8 Rf5 78.Kh8 Rf8) 71.Ke5-+ Kf3 72.Kd5 Ke3 73.Ke5 Ra5 74.Kf6 Ke4 75.Ke6 Ra6 76.Ke7 (76.Kd7 Kd5 77.Ke7 Rd6 78.Kf7 Re6 79.Kf8 Kd6 80.Kf7 Kd7 81.Kf8 Re7 82.Kg8 Ke8 83.Kh8 Kf7 84.Kh7 Re6 85.Kh8 Rh6) 76...Kd5 77.Kd7 Ra7 78.Kc8 (78.Kd8 Rb7 79.Kc8 Re7 80.Kd8 Kd6 81.Kc8 Kc6 82.Kb8 Re8 83.Ka7 Rd8 84.Ka6 Ra8) 78...Kd6 79.Kb8 Rg7 (79...Rc7 80.Ka8 Kc6 81.Kb8 Kb6 82.Ka8 Rc8) 80.Kc8 Rf7 81.Kb8 Kc6 82.Kc8 (82.Ka8 Kb6 83.Kb8 Rf8) 82…Rf8 0-1. FelixMart - supernova74, Rated Blitz game, lichess.org, 2019.

4.Be5=+ Nf6 5.e3 0-0 6.Bc3 Bc3 7.Nc3 d5 8.Nf3 Bg4 (8...c5 9.Rb1=+) 9.Be2 Ne4 10.Ne4 de4 11.Nd4 (11.Ne5 Qh4 12.g3 Be2 13.Qe2 Qh3=) 11...Be2 12.Ne2 Nd7 13.0-0 Nc5 14.h3 (14.Nd4 Qh4=+) 14...Qd6 15.f5 (15.Nd4 Ne6 16.Ne6 Qe6=) 15...Rfd8 16.Nd4 a6 (16...Nd7!?=+) ½–½. Rosner,Dirk – Wilting,WJ, corr SOK–90–54, 1990.

4.Be5 Nf6 5.e3 0-0 6.Nf3 d6 7.Bb2 Nd5 8.c3 Bc5 =+.

4.Nf3 d5 5.Ne5 Nf6 6.e3 Nbd7 7.Be2 Ne5 8.Be5 0-0 =.

4.Nf3 d6 5.fe5 de5 6.Ne5 Nh6 7.Nc3 0-0 8.e3 Re8 =.

4.Nf3 d6 5.fe5 de5 6.Ne5 Nh6 7.g3 Qd5 (7...f6 8.Nd3 Qd5 9.Rg1=+) 8.Nf3 0-0 (8...Nf5 9.a3 Bc5 10.Nc3=) 9.Bg2 Nc6 10.0-0 Qb5 (10...Qh5 11.e3=) 11.Bc3 Bd6 12.a4 Qh5 13.e3 Re8 14.Na3 Bc5 (14...Bh3 15.Nd4 Qd1 16.Rfd1 (16.Rad1? Bg2 17.Kg2 Nd4–+) 16...Bg2 17.Kg2 Nd4 18.Bd4=) 15.Qb1 (15.Nb5 Re7=) 15...Ng4 (15...a6 16.Nc4=) 16.Nb5 (16.Qb2 f6=) 16...Re7 17.Qb2 f6 (17...a6 18.Na3 Qg6 19.Nc4=) 18.Rae1 (18.h3 Nh6 19.g4 Qg6+=) 18...a6 (18...Nce5 19.Be5 fe5 20.d4=) 19.Nbd4+= Nd4 20.ed4 Re1 21.Re1 Bf8 (21...Bd6 22.Qb3 Kf8 23.Bb4+/-) 22.Bb4+/- Qf7 23.Bf8 Qf8 24.Qc3 c6 25.Qb3 Kh8 26.d5 cd5 (26...c5 27.a5+/-) 27.Qd5 Rb8 (27...Nh6 28.Nd4+/-) 28.Qd6 Bf5 (28...Qd6?? 29.Re8 Qf8 30.Rf8) 29.Qf8 Rf8 30.Nd4 Bc8 31.Re7 h6 (31...b6 32.Ne6 Be6 33.Re6+/-) 32.Bb7+- Bb7 33.Rb7 Rc8 (33...Rd8 34.c3+-) 34.c3 Rc4 35.Rb4 (35.a5 Ra4 36.Ne6 Ra5 37.Rg7 Ne5+-) 35...Ne5 36.Rc4 Nc4 37.Nb3 Kg8 38.Kf2 (38.d3 Nb2 39.Nc5 g6+-) 38...Kf7 39.Ke2 Ke6 40.Nc5 Kd6 41.Na6 Nb2 42.d4 Na4 43.c4 Nb2 (43...Kd7 44.Ke3+-) 44.c5 Kd5 45.Nb4 Kc4 (45...Kd4 46.c6 Nc4 47.c7+-) 46.Nc6 (46.c6 Na4 47.c7 Nb6+-) 46...Na4 (46...Kd5 47.Ne7 Ke6 48.Nc8+-) 47.Ke3 Kd5 48.Ne7 Ke6 49.Nc8 Nc3 (49...f5 50.Kd3 Nb2 51.Kc3 Nd1 52.Kd2+-) 50.Nb6 1–0. Mehlhorn,U – Langheld,W, M–357–D, 2001.

4.Nf3 ef4? 5.Bg7 Be7 6.Bh8 Bh4 7.g3 fg3 8.Bg2+-.

4.a3 ef4 5.Bg7 Be5 6.Be5 (6.Bh8? Qh4 7.g3 fg3–+) 6...Qe5 7.Nc3 =.

4.a3 Nf6 5.Nf3 ef4 6.c4 c6 7.Qb3 0-0 8.c5 Bc7 9.e3 d5 10.Bd4 fe3 11.de3 Bg4 12.Nbd2 Bf3 13.Nf3 Ng4 14.Ra2 Re8 15.Re2 f5 16.h3? (16.g3 Nd7–/+) 16...Nf6 (16...Bg3 17.Kd2 Nf2 18.e4 Bf4 19.Kc3 Ne4 20.Kc2–+) 17.Kd2? (better is 17.g4–+) 17...Ne4 18.Kc1 Ng3 19.Rg1 Ne2 20.Be2 Nd7 21.Qd3 Qe4 (21...f4 22.Qc2–+) 22.Qe4 fe4 (22...Re4?! 23.Bd3–+; 22...de4?! 23.Bc4 Kh8 24.Ng5–+) 23.Nd2 Be5 24.Nb3 Bd4 25.Nd4 g6 26.Kd2 a6 0–1. carrafurca (2100) – gregorgysi (2315), net–chess.com, 2013.

4.Nf3 Nc6 5.b5 Nd4 6.Nd4 ed4 7.Bd4 Nf6 8.e3 Bf4 9.Bd3 Be5 10.Be5 Qe5 11.Nc3 d5 12.0-0 0-0 (12...Be6 13.Qf3=) 13.Qf3 d4 (13...Re8 14.Qf2=) 14.Ne4 (14.ed4 Qd4 15.Kh1 Qg4+=) 14...Ne4 15.Be4 (15.Qe4 Qe4 16.Be4 de3 17.de3 a6+=) 15...a6 (15...de3 16.Qe3 Qb5 17.Rfb1=) 16.a4 (16.Bd5 Kh8 17.Bf7 Qb5 18.Rab1+= (18.ed4?! Be6 19.Rab1 Rf7 20.Qf7 Qb1 21.Qe6 Qc2=)) 16...ab5=+ 17.ab5 Ra1 18.Ra1 de3 19.Ra8?? (better 19.Re1=+) 19...ed2-+ 20.Qd3 Qe4! 21.Qd2 (21.Qe4 d1Q Pinning) 21...b6 22.h3 (22.Ra7-+) 22…Qa8 0-1. pacal56 (2165) - Albator (2170), Rated Blitz game, lichess.org, 2014.

4.Nf3 Nc6 5.b5 Nd4 6.e4 c5 7.bc6 bc6 8.Nd4 ed4 9.Bd4 Bf4=.

4.Nf3 Nc6 5.fe5 Bb4 (5...Ne5!? 6.e3 Nf6+=) 6.e3= Nh6 7.Bc4 (7.Bd3 Ng4=) 7...Ng4 Will e5 fall? (7...0-0 8.0-0=) 8.0-0 0-0 9.d4?? (better is 9.a3 Ba5 10.Nc3 Bc3 11.Bc3 Nge5 12.Ba2=) 9...Ne3–+ 10.Qe2 Nc4 (better is 10...Nf1!? 11.Kf1 d6–+) 11.Qc4–/+ d6 12.Nc3 Be6?? (better is 12...de5 13.Nd5 Qd6 14.Nb4 Qb4 15.Qb4 Nb4–+) 13.d5+/- de5 14.de6 Qc5 15.Qc5 Bc5 16.Kh1 fe6 17.Nb5 Rf6? 18.Ne5+- Rf1 19.Rf1 Rc8 20.Nc6 bc6 21.Nd4 Rb8 22.Bc3 Ba3? 23.Ne6 g6 24.Nc7 Rf8 25.Rf8 Bf8 26.Bd4 Kf7 27.Ba7 Bd6 28.Na6 g5 29.Bc5 Bf4 30.Nb4 Ke6 31.a4 Bc7 32.c4 Kd7 33.g4 Bd8 34.Bf8 Bb6 35.Bh6 Be3 36.Kg2 Bd2 37.Nd3 Ke8 38.Ne5 c5 39.Nf3 Bf4 40.Bg5 (40.Bg5 Bc7 41.Be3+-) 1–0. wpech (1620) – elitedriver (1765), gameknot.com, 2006.

4.Nf3 f6 5.fe5 Be5 6.Ne5 fe5 7.a3 d6 8.Nc3 Bg4 9.Nd5 Qd8 10.h3?? Qh4 (11.g3 Qg3#) 0–1. Andreas – alias@, mySchach.de, 2004.

6.Nf3?? Qg4 7.Bh8+- g2 8.Bg2! Qg2 9.Rg1 Qh3 10.Rg8 (10...Ke7 11.Nc3 Bh2 12.Bf6 Kf6 13.Nd5 Ke6 14.Ng5 Kd5 15.Nh3+-) 1–0. Wall,Bill – Millimaci,Sam, Mt View, CA, 1987.

6.Nf3?? gh2 7.Nh4 Bg3# 0–1. Millimaci,Sam – Wall,Bill, Mt View, CA, 1987.

6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 Qb4 =.

6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 Qg4 9.Bh8 Qg6 (9...Bb4 10.Rh7 d5 11.Nc3+=) 10.b5 (10.a3 Be7+=) 10...b6 (10...a6 11.Nc3+=) 11.e4 Bb7 (11...a6 12.Qh5+/-) 12.Qf3 (12.Qh5 a6+/-) 12...a6 13.Nc3 (13.Qf5 h6 14.Nc3 Bb4+/-) 13...Bc5 14.d4 Bb4 15.Ne2 (15.Rh3 Ne7+/-) 15...Ne7 (15...ab5 16.Nf4 Qg5 17.Rh7+/-) 16.Rf1 (16.c3 Ba3+/-) 16...ab5 17.Nf4 Qg8 18.Nh5 Kd8 (18...Qg6!?+/-) 19.Qf7+- Qf7 20.Rf7 Threatening mate... how? 20...Ng6 21.Bf6 Kc8 22.Rg7 Bc6 (22...Bf8 23.Rg8 (23.Rh7?! Ra2 24.Rf7 Rc2+-) 23...Ra2 24.Nf4 Rc2 25.Rh7 (25.Ng6?! Rg2 26.Kg2 Be4 27.Kf2 Bh1 28.Nf8 Bd5+-) 25...Rg2 26.Ng2 Be4 27.Nh4+-) 23.d5 (23.Rh7?! Ra2 24.d5 Ba8+-) 23...Ra2 24.dc6 Nc6 25.c3 Bc5 26.Kh2 Bd6 27.Kh3 Nce5 28.Rf1 (28.Bf1 Rc2 29.Rh7 Rc3 30.Kg2 c6+-) 28...Rc2 29.Ng3 (29.Rh7 Rc3 30.Kh2 b4+-) 29...Rc3 30.Rh7 Ra3 (30...b4 31.Rg7 c5 32.Rg8 Kc7 33.Bd8 Kb7 34.Rg6 Ng6 35.e5 Ka6 36.ed6+-) 31.Rg7 c6 32.Bg5 Kc7 33.Rf6 Nf7 34.Rgg6 (34.Rfg6 Rg3 35.Kh4 Rg2 36.Rf7 Re2+-) 34...Rg3+/- 35.Kh4 Rg5 36.Rg5 Ng5 37.Kg5 Be7 38.e5 b4 39.Kg6 (39.Kg6 b5 40.Rf7+-) 1–0. Zylla,Johannes – Palmen,Hermann Josef, corr DFMM, 1993.

6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 Qg5 9.Bh8 Bb4 10.Rh7 +=.

4.e4 ef4 5.a3 a5 6.b5 Qe7 7.Qh5 g6 8.Qf3 b6 =.

4.fe5 fe5 5.e3 Nc6 6.b5 Nce7 7.Bd3 c6 8.Be5! Be5 9.Qh5 Ng6 10.Bg6 Ke7?? 11.Qe5 Kf8 12.Qf4 Qf6 13.Qf6 Nf6 14.Bd3 Nd5 15.bc6 bc6 16.Ne2 Bb7 17.0-0 Nf6 18.Nbc3 h5 19.Ne4 Rh6 20.Nf6 gf6 21.Rf5 c5 22.Nc3 Rg6 23.Be4 Rb8 24.Rb1 Be4 25.Rb8 Kf7 26.Ne4 Ke6 27.Rc5 d6 28.Rc6 Kd5 29.Rd6 Ke4 30.Re8 Kf5 31.Rd5 Kg4 32.Re4# 1–0. Trkn – RJClark, itsyourturn.com, 2000.

4.fe5 fe5 5.e3 Nf6 6.a3 e4 7.Bc4 Nc6 8.d4 Ne7 =+.

4.fe5 Be5 5.d4 Bf4 6.Nc3 f5 7.Nh3 Bd6 8.a3 Nf6 =.

4.a3 c6 5.c4 f5 6.Bh3 Nh6 7.e3 (7.c5 Bc7+=) 7...0-0= 8.d4 (8.c5 Bc7=) 8...f4+= 9.e4 Qf7 (9...b6+=) 10.Qe2 (better is 10.de5!? fg3 11.f3=) 10...ed4–/+ 11.Bd4 c5 12.Bc3 Nc6 13.gf4? (13.Bg2!? cb4 14.ab4 Nb4 15.Nf3–/+) 13...cb4 (better is 13...Qf4!? 14.Nd2 cb4 15.ab4 Bb4 16.Rc1–+) 14.ab4 Qf4 15.c5 Be5 16.Nd2 (16.Be5 Ne5 17.Ra3 Qc1 18.Qd1 Qd1 19.Kd1 Rf2–/+) 16...d6 (16...Bc3 17.Qc4 d5 18.cd6 Nf7 19.Qc3 Nd6 20.Qe3 Nb4 21.Qf4 Rf4 22.Bc8 Rc8 23.Ke2 Ne4 24.Ne4 Re4 25.Kf3–+) 17.Qc4 (17.Be5!? Ne5 18.cd6–+) 17...Kh8 18.0-0-0 Bh3 (better is 18...dc5!? 19.Qc5 Qf6 20.Be5 Ne5–+) 19.Nh3–/+ Qh4 (better is 19...Qg4 20.f4 Qh3 (20...Bf4?? 21.Rhg1 Be5 22.Rg4 Ng4 23.Ng5 Bc3 24.Qc3 dc5 25.Qh3+-) 21.fe5 de5–/+ (worse is 21...Ne5 22.Qb3=)) 20.Qd3? (better is 20.f4!? Qh3 21.fe5 de5 22.b5–/+) 20...dc5–+ 21.Rhg1? (better is 21.Be5 Ne5 22.Qg3–+) 21...cb4 (21...Nb4 22.Bb4 cb4 23.Nf3 Bf4 24.Nf4 Qf4 25.Nd2 Qf2 26.Qd6–+) 22.Be5 Ne5 23.Qb3 (23.Qg3 Qe7 24.Kb1 Rad8–+) 23...Rac8 24.Kb1 Nf3! 25.Rg3 (25.Nf3 Rc3 Double attack (25...Rc3 Decoy; 25...Qh3 Interception)) 25...Nd2 26.Rd2 Qe4 27.Qd3 Qc6 28.Rc2 Qc2 29.Qc2 Rc2 30.Kc2 Nf5 (30...a5 31.Kb3–+) 31.Rd3 h6 32.Nf4 (32.Rd7 a5 33.Nf4 Kg8–+) 32...Rc8 (32...Ne7!? 33.Rd4 Nc6 34.Re4–+) 33.Kb2 (33.Kb3 g5 34.Nd5 a5–+) 33...Rc7 (33...Rc4 34.Ne6–+) 34.Rd8 (34.Ne6 Rc4 35.Kb3–+) 34...Kh7 35.Ne6 Rc3 36.Nf8 (36.Rd7 Rf3 37.Kb1 Rf2 38.Rb7 Re2 39.Nf8 Kg8–+) 36...Kg8 37.Nd7 Kf7 38.Ne5 Ke6 39.f4 Nd6 0–1. Arnaudov,Petar (2070) – Mladenov,Emil (2050), Teteven BUL, 2014.

4.a3 c6 5.c4 Nf6 6.Bg2 Bc7 7.e4 0-0 8.Ne2 d6 9.0-0 Bg4 10.f3 Be6 11.d3 Qd7 12.Nd2 Bh3 13.d4 Bg2 14.Kg2 a5 15.Qb3 a4 16.Qc3 Qe7 17.de5 de5 18.c5 Re8 19.Nc4 Nbd7 20.g4 h5 21.g5 Nh7 22.f4 f6 (better is 22...Nhf8!?=) 23.g6+/- Nhf8 24.f5 b6 25.cb6 Bb6 26.Nb6 Nb6 27.Rf3 Rac8 28.Rh3 c5 29.Qf3 (29.Rh5 Qd7 30.bc5 Qb5+-) 29...Ng6 30.fg6 Qe6 31.Qh5 (31.Rh5?! cb4 32.ab4 Rc2+-) 31...Kf8 32.Qh8 Qg8 33.bc5 Rc5 (33...Nd7 34.Bc3 Qh8 35.Rh8 Ke7 36.Rh7+-) 34.Bc3 Qh8 35.Rh8 Ke7 36.Bb4 Rh8 37.Bc5 Ke6 38.Bb6 Rh6 39.Rb1 Rg6 40.Ng3 Kd7 41.Be3 f5 42.ef5 Rc6 43.Rc1 Rd6 44.Rc2 0–1. Hallerod,R (2120) – Bernhoeft,E (2020), TCh–Eur Seniors, Dresden GER, 2010.

3.a3 d6!?=.

3.a3 Bd6 4.f4+= Nf6?? (better 4...Qe7+=) 5.fe5+- (5.fe5 Be5 6.Be5+-) 1–0. Pierre – Mirrimond, internet, 2020.

3.b5 d5 4.e3 a6 5.a4 d4 6.ed4 ed4 7.Nf3 Bf6 8.Bd3 Ne7 9.0-0 Nd5 10.Bd4 Bd4 11.Nd4 Nf4 12.Qe1 Ne6 13.Ne6 Be6 14.Nc3 ab5 15.Bb5 c6 16.Bc4 Qd6 17.Be6 Qe6 18.Qe6 fe6 19.Rfe1 Kf7 20.Re3 Re8 21.Ne4 Kg8 22.Nd6 Rd8 23.Ne4?? Na6 24.f3 Nb4 25.Rc3 b5 26.a5 Rd4 27.d3 Kf7 28.Nc5 Kf6 29.Kf2 Na6 30.Na6 Ra6+/- 31.Ke3 Ra4= 32.Rca3 R6a5 33.Ra4 Ra4 34.Re1 e5 35.Kd2 Ke6 36.Re4 Re4 37.fe4 Kf6 38.Ke3 c5 39.h4 Kg6 40.g4 h5 41.Kf3 hg4 42.Kg4 Kf6 43.h5 b4?? 44.Kh4+- g5 45.Kg4 Kg7 46.Kg5 Kh7 47.h6 Kh8 48.Kf5 Kh7 49.Ke5 Kh6 50.Kd5 Kg5 51.e5 1–0. valpa – MIGUEL_A, HCL–C1860 playchess.de, 2003.

3.b5 d6 4.e4=+.

3.Be5 Nf6=.

3.Be5 Bh4?? 4.Bg7+- Nh6 5.Bh8 Kf8 6.Nf3 Ng4 7.Nh4 Qh4 8.g3 Qh6 9.e3 Kg8 10.Qg4 Qg6 11.Qg6 Kh8 12.Qf7 d6 13.Qf8# 1–0. pierre – ajaxouch, internet, 2008.

4.Bc3 Bc3 5.Nc3 Qe7 6.Nd5 Qd6 7.e4 Nf6 8.Nf6 Qf6 9.Nf3 d6 (9...Qe7 10.Bd3+=) 10.Bc4 Bg4 11.c3 Nc6 12.h3 Bf3 13.Qf3 (worse is 13.gf3 0-0-0+=) 13...Qf3 14.gf3 Ne5 15.Be2 0-0-0 16.d4 Nc6 17.Rg1 g6 18.Kd2 Rdf8 19.f4 f5 20.e5 d5 21.Bf3 Ne7 22.Kd3 b5 23.a4 a6 24.ab5 ab5 25.Ra5 c6 26.Ra7 Re8 27.Rga1 Kd8 28.e6 Nc8 (28...Kc8+-) 29.Rd7 1–0. Fournier,Frederic (1805) – Fourgereauf, Active (5/0), 2007.

4.Bc3 Nc6 5.b5 Nd4 6.e3 Qe7 7.Nf3 c5 8.Bd3 (< 8.Nd4 cd4 9.Bb2 de3=+) 8...d5 9.0-0 (< 9.Nd4 cd4 10.Bb2 de3–/+) 9...c4 (better is 9...Nf3!? 10.Qf3 Be6+/-) 10.Nd4 cd3 11.cd3 Nh6 12.Qb3 0-0 13.Bb4 Qd8 14.Bf8 Kf8 15.Nc3 Bd4 16.Qb4 Kg8 17.Qd4 (< 17.ed4 Be6+-) 17...Be6 18.Qe5 Rc8 19.Rac1 Ng4 20.Qd4 Qd6 21.f4 h5 (21...a6 22.Ne4! Qb8 23.Rc8 Qc8 24.f5 de4 25.fe6 fe6 26.ba6 ba6 27.Qe4+-) 22.Qa7 Qe7 (22...Qd7 23.Qd4+-) 23.Nd5! (23...Qd6 24.Nc7+-) 1–0. Trkn – guest671, ICC, 2004.

4.Bc3+= d5 5.e3 Nc6 6.b5+/- Ne5 7.f4 Ng4 8.Bd3 h5 9.Nf3 Bh4? 10.Nh4 Qh4 11.g3 Qh3 12.Bf1 Ne3 13.de3 Qe6 14.Bg7 Rh7 15.Bd4 c5 16.Bc5 a6 17.Nc3 ab5 18.Nd5 Qc6 19.Bb5! Bg4 20.Nc7 1–0. miec – hakia10, internet, 2009.

3.a3 a5 4.b5 e4 5.Nh3 Nf6 6.c4 d5 7.cd5 Nd5 8.Nc3 Be6 9.Nd5 Bd5 10.Nf4 a4 11.e3 Bf7 12.g4 Qe7 13.gf5 Nd7 14.Rc1 (14.Qc2 Nc5+=) 14...Ne5 15.Bg2 Nc4 16.Bd4 Na3 17.Rc5 Nc4 18.Qc2 Na3 (18...a3 19.Rc4 Bc4 20.Qc4+-) 19.Qc3+- Nc4 20.Rc4 Bc4 21.Qc4 0-0-0 (21...Rc8 22.f6 Qf7 23.Qc2 gf6 24.Qe4 Be7 25.Qb7+-) 22.Ne6 a3 23.Be4 (worse 23.Nd8 Qd8 24.Qa4 Kd7+-) 23...Rd4 (23...Rd6 24.Bc5 Qf6 25.Bb6+-) 24.Qd4 (24.Nd4?! Qe4 25.Rf1 Bd6+=) 24...a2 25.Ke2 Qd6 26.Qa7 Kd7 27.Qb7 g6 (27...Ke7 28.Ra1 g6+-) 28.Rc1 gf5 29.Rc7 Qc7 (29...Ke6 30.Qc8 Qd7 31.Qd7 Ke5 32.Qf5 Kd6 33.Rd7) 30.Qc7 Ke6 31.Bd5! Kf6 (31...Kd5 32.Qc6 Mate attack) 32.f4 (32.Qf7 Kg5 33.f4 Kh4 34.Qf6 Kh3 35.Qg5 a1Q 36.Qg3) 32...Be7 33.Qe5 Kg6 34.Qe6 Bf6 35.Qf7 Kh6 36.Qf6 Kh5 37.Bf3 (37.Qg5) 1-0. marekt (2150) - fatguywes (2175), gameknot.com, 2017.

3.a3 Nc6 4.b5+/- Nd4 5.e3 Ne6 6.Be5 Bc5 7.d4 Bf8 8.Nc3 d6 9.Bg3 g5? (better is 9...Be7!?+/-) 10.Qh5+- Ke7 11.Nd5 Kd7 12.Nf3 g4?? (12...Nh6+-) 13.Qf7 (better is 13.Be5!? Qe8 14.Qe8 Ke8 15.Bh8 gf3 16.gf3 Ne7 17.Ne7 Ke7+-) 13...Ne7 (13...Be7 14.Ne5! de5 15.Be5 Ng5+-) 14.Nf6 1–0. b4_player – verry, casual, 2013.

3.a3 d6!? =.

3.a3 Nf6 4.d3 d5 5.Nd2 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.d3 f5 5.Nd2 Nf6).

3.a3 h5 4.Be5+/- a6 5.Nf3 d6 6.Bb2 g5?? (better is 6...Nf6+/-) 7.Bh8+- g4 8.Nd4 c6 9.e3 b6 10.Bd3 c5 (10...Qg5 11.Ne2+-) 11.Nf5 cb4 (11...d5 12.bc5 bc5 13.c4+-) 12.ab4 h4 (12...d5 13.c3+-) 13.Qg4 Nd7 (13...Ne7+-) 14.Qg6 (14.Qh5) 1–0. Fournier,Frederic – MANON 29, Active, 2006.

3.b5 d6 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.b5).

3.Be5 d5 4.Nf3 Nf6 5.c3 (5.a3 Nc6+=) 5...c5 (5...Nc6 6.Bf4+=) 6.e3 cb4 7.cb4 Bb4? (better is 7...Nc6 8.a3 Ne5 9.Ne5 a6+/-) 8.Bb8+- Bd2 (8...0-0 9.Be5+-) 9.Qd2 (9.Nbd2 Rb8 10.Qa4 Bd7 11.Qa7 b6+-) 9...Rb8 10.Qb4 (10.Nc3 Be6+-) 10...Ne4 (10...a5 11.Bb5 Bd7 12.Bd7 Nd7 13.Qd4+-) 11.Bb5 (11.Qa4 Bd7 12.Qa7 b6+-) 11...Bd7 12.Ne5 White gets strong initiative 12...Bb5 13.Qb5 Ke7 14.f3 (14.0-0 Qd6 15.Nf3 Kf7+-) 14...a6 (14...Qd6 15.Qb2 Nf6 16.Na3+-) 15.Qb2 Qa5 16.Kf1 (16.Ke2 Nf6+-) 16...Nc5 (16...Nf6 17.Kf2+-) 17.Nc3 Rhe8 (17...Rhd8 18.Rd1 Ne6 19.Qb3+-) 18.Nd5 Kf8 19.Rd1 (better is 19.Nc4 Qd8 20.Ncb6+-) 19...Na4 (19...Rbd8+-) 20.Qa3 Kg8 21.Ne7 Kh8 (21...Re7 22.Qe7 Qb5 23.Kg1 Qe8+-) 22.Nf7# 1–0. b4_player – opponent, gamecolony.com, 2007.

3.Be5 Qg5? 4.Nf3 Qg4 5.a3 d6 6.Bb2 Be6 7.e3 Nc6 8.h3 Qg6 9.d3 Bd5 (9...Nf6 10.b5 Ne7 11.Nd4+/-) 10.c4+- Bf3 11.Qf3 0-0-0 12.b5 Na5? (12...Ne5 13.Qf4+/-) 13.a4 (13.Nd2!? Kb8+-) 13...Be7 14.Bc3 Nb3 15.Ra3 Nc1 (15...Nc5 16.a5+-) 16.Bb2 (better is 16.Bd2 d5 17.c5 d4 18.Bc1 Bc5+-) 16...Nd3? (16...d5 17.Bc1 dc4+-) 17.Bd3 Qe6 (17...Nh6+-) 18.Bg7 (better is 18.Bf5 Qf5 19.Qf5 Kb8 20.Bg7 Bf6 21.Bh8 Bh8+-) 18...Bf6 (18...Nh6 19.Qf4 Qg8 20.Bh8 Qg2 21.Rf1+-) 19.Bh8 (better is 19.Bf5 Bg7 20.Be6 Kb8 21.Bg8 Rdg8+-) 19...Bh8 (19...f4 20.Qf4 Qe7 21.Bf6 Nf6 22.a5+-) 20.Bf5 Re8 21.Be6 Re6 22.Qf8 (better is 22.Qf7!? Kd8 23.Qe6 Nf6+-) 22...Kd7 23.Qg8 Re8 24.Qh7 Kd8 25.Nc3 (better is 25.a5 Bb2 26.b6 Re7 27.Qg8 Re8 28.bc7 Kc7 29.Qf7 Kd8+-) 25...Be5 26.Nd5 Bb2 27.Qc7 1–0. nordlicht (2165) – harzer, gameknot.com, 2005.

4.Be5 Nf6 =.

4.Be5 Bf8 5.Nc3 d6 6.Bg3 Nc6 7.Nh3 Bd7 8.Rb1 b6 9.Qf3 g6 10.d4 Bg7 11.Bb5 Nge7 12.Bh4 0-0? (better is 12...a6!? 13.Bc4 b5+=) 13.Nd5+- Bd4? (13...Kh8 14.Nhf4 Bh6 15.Bc6 Bc6 16.Be7 Qe7 17.Ng6 hg6 18.Ne7 Bf3 19.Ng6 Kg7 20.Nf8+/-) 14.ed4 (better is 14.Bc6!? Bc6 15.Be7 Bc3 16.Kd1 Qd7 17.Bf8 Rf8 18.Ne7 Qe7 19.Qc6 Be5+-) 14...Nd4 15.Qd1 Nb5 16.Ne7 Qe7 (16...Kf7 17.Qd5 Kg7 18.Rb5 Rf6 19.Bf6 Kf6 20.Qd4 Ke7 21.Qg7 Ke8+-) 17.Be7 Rfe8 (17...Rae8 18.Qd5 Rf7+-) 18.Qd5 Kg7 19.0-0 Nc3 (19...c6 20.Qd2 Re7 21.a4+-) 20.Qd4 Kf7 21.Qf6 Kg8 22.Ng5 Ne4 23.Qf7 Kh8 24.Qh7 1–0. Fritz 11 – alfo_gg, internet, 2014.

4.f4 Nf6 5.a3 Bd6?? (better is 5...Ba5 6.fe5 Ng4=) 6.fe5+- (worse is 6.Be5 Be5 7.fe5 Ng4+=) 6...Be5 7.Be5 0-0 8.Nf3 d6 9.Bc4 Kh8 10.Bb2 Nc6 11.Nc3 d5 12.Bd3 d4 13.ed4 Nd4 14.0-0 Nf3 15.Qf3 (15.gf3?! Qd4 16.Kh1 Re8+-) 15...f4 (15...Qd4 16.Qf2 Qd8 17.Rae1+-) 16.Qf4 Ng4 (16...c6+-) 17.Qf8 Qf8 18.Rf8 1–0. Fournier,Frederic (1990) – NN, Active, 2004.

4.Bb2 Nb4 5.a3 Nc6 6.e3 d5 7.Nf3 Nf6 8.c4 0–1. Fournier,Frederic – Rohde,Friedhelm, corr GMM03–Sf03, 1997.

4.Bb2 Nb4 5.a3 Nc6 6.Nf3 Nf6 7.e3 b6 (7...Be7 8.Be2=) 8.d4 (8.Bc4 Be7+=) 8...Bb7 (8...d5 9.Ne5 Bd7 10.Ba6+=) 9.c4 g6 (9...Ne4 10.d5 Ne7 11.Bd3+=) 10.Be2 Bg7 11.0-0 Ne4 12.Nc3 0-0 13.Nd5 Ne7 14.Nf4 c5 15.Rb1 cd4 (15...Re8 16.dc5 Bb2 17.Rb2 Nc5 18.Nd4+=) 16.Nd4 (16.Bd4 Bd4 17.Qd4 g5+=) 16...Re8 17.Nb5 Nc6 (17...Bb2 18.Rb2 g5 19.Nd3+=) 18.Qd5 Kh8 19.Bg7 Kg7 20.Rfd1 Re7 21.Nd6 Nd6 (21...Qc7 22.Nb7 Qb7 23.Qd3+/-) 22.Qd6 Ne5 23.Qd4 (23.c5 Rc8 24.cb6 Rc6+-) 23...d6 24.a4 (24.Nd3 Kg8+/-) 24...Kg8 (24...Be4 25.Rb2+/-) 25.a5 (25.Qd6 Qd6 26.Rd6 Rc8+/-) 25...Be4 26.Rb5 Bc6 (26...Nc6 27.Qd2 Na5 28.c5+/-) 27.Rb2 ba5 (27...Rb7 28.Qd6 Qd6 29.Rd6 ba5 30.Rb7 Bb7 31.Re6+/-) 28.c5 (28.c5 d5 29.Rbd2+/-) 1–0. Mehlhorn,U – Lang,K, M–356–D, 2001.

4.Bb2 Nb4 5.c4 Qh4 6.e3 Nf6 7.Nf3 Qe4 8.d3 Qg4 (8...Qe7 9.a3 Nc6 10.Nc3+=) 9.Nc3 Bd6? (better is 9...Be7+=) 10.Nb5+- 0-0 (10...Ke7 11.Nd6 Kd6 12.Be5 Ke7 13.Bc7+-) 11.Qb3 (11.Nd6?! cd6 12.Ba3 a5+-) 11...Bc5 12.Nc7 Rb8 13.Bf6 Rf6 14.d4 Qe4 15.Rc1 b6 16.dc5 bc5 17.Nd5 Rd6 18.a3 Nc6 19.Qc3 a5 20.Bd3 Qe6 21.0-0 Bb7 22.Rb1 Rd5 (22...Kh8+-) 23.cd5 (23.cd5 Qd6 24.dc6 Qc6 25.Qa5+-) 1–0. rickdragon (2560) – chessnaif (2400), net–chess.com, 2013.

4.Bb2 Nb4 5.e3 Nf6 6.a3 Nc6 7.Nf3 d6 8.Bb5 Bd7 9.0-0 Qe7 10.d4 0-0-0 11.Be2 Ne4 12.Nbd2 d5 13.c4 Be6 14.c5 h5 15.Rb1 g5 16.Qb3 Nb8 (better is 16...g4 17.Bc3 b6+=) 17.Ne4?? (better is 17.Bc3 c6 18.Ne5+/-) 17...c6?? (better is 17...de4 18.Qa4 ef3 19.Bf3 Bd5 20.Bd5 Rd5 21.Qa7 Qe6+=) 18.Nd6 Rd6 19.cd6 Qd8 20.Bc3 Rh7 21.Bb4 g4 22.Ne5 Bd6 23.Bd6 Qd6 24.g3 (24.Qa4 a6+-) 24...c5 25.Rfc1 c4 0–1. madik – dr_kang (1610), gameknot.com, 2011.

4.b5?? Ne5–+ 5.e3 d5 6.f4 Nc4 7.Bc4 dc4 8.Nf3 Bc5 9.0-0 Nf6 10.Qe2 Be6 11.Nc3 0-0 12.Ne5 Ne4 13.Ne4 fe4 14.Nc4 b6 15.Ne5 Kh8 16.c3 Qd6 17.a4 Bf5 18.Rad1 Qe6 19.g4 Bg6 20.f5? (20.Ng6 Qg6 21.f5 Qg5–+) 20...Qe5 (20...Bf5!? 21.Rf5 Rf5 22.gf5 Qe5 23.Rf1–+) 21.fg6 Rf1 22.Rf1 hg6 23.Qg2 Rf8 24.Rf8 Bf8 25.Qh3 Kg8 26.Qg2 Be7 27.h3 Bh4 28.Qe2 g5 29.Qc4 Kh7 30.Qe2? Qg3 31.Kf1 Qh3 32.Kg1 Qg3 33.Kf1 Qd6 34.Kg2 Qd3 35.Qd1? Qd6 36.Qe2 Qg3 37.Kf1 Qh3 38.Kg1 Qf3 39.Qf1?? Qg4 (39...Qg4 40.Qg2 Bg3–+) 0–1. Fournier,Frederic (1705) – ososan (1665), Active, 2007.

4.Bc3 d5 5.a3 (5.b5 Nce7+/-) 5...d4+= 6.Bb2 Nf6 7.c3 (7.Nf3 a5+=) 7...Be6 8.b5 (8.Nf3 a5=) 8...dc3= 9.Bc3 (worse is 9.Nc3 Nd4 10.f4 Bb3–+) 9...Nd4 With the decisive threat Bb3 10.e3? (10.Bd4 Qd4 11.Nc3 Bc5=) 10...Nb3?? (better is 10...Bb3 11.Qc1 Nc2 12.Ke2 Na1 13.Ba1 Bd6–+) 11.Bf6 (better is 11.Ra2+=) 11...Qf6–/+ 12.Nc3 (12.Ra2 Nd4! 13.Rb2 Nf3 14.Nf3 Qb2–/+) 12...Na1–+ 13.Qa1 0-0-0 14.Nf3–/+ Bc5 15.d4 Be7 16.Be2 g5 17.0-0 h5 18.Ne5 Bd6 19.f4 g4 20.g3? Be5 21.de5 Qe7 22.a4 h4–+ 23.b6 cb6 24.Nb5?! Kb8 25.Nd6 hg3 26.hg3 Bd5 27.Kf2 Rh2 28.Ke1 Qc7 29.Kd2?? Be4 30.Qc3?? Re2! 31.Ke2 Theme: Deflection from c3 31...Qc3 32.Rd1 Bf3 33.Kf2 Bd1 34.Nf5 Rd2 35.Kg1 Qc2 36.Nh4 Rh2 37.Kf1 0–1. Xelaju – techno10, Live Game Caissa's Web, 2006.

4.Bc3 Nf6 5.b5 Ne7 6.Bf6 gf6 7.e3 d5 8.f4 b6 9.d4 Bb7 10.Nf3 Qd7 11.Bd3 Nc8 12.Nh4 Nd6 13.Qh5 Kd8 14.Nc3 Ne4 15.Be4 fe4 16.Qf5 Bb4? 17.Qf6+- (17...Qe7 18.Qe7 (18.Qh8?! Kd7 19.Qe5 Bc3 20.Ke2 Qh4=) 18...Ke7 19.Kd2+-) 1–0. Brogger,Gunnar – Reussner,Hans Dieter, 04. VCC–Open, 2001.

4.Bb2 Nf6 5.e3 f4 6.ef4+/- Bg4 7.Be2 Bf5 8.Nf3 Be4 (8...d5 9.a3+-) 9.d3 Bf3 10.Bf3 (10.gf3?! d5 11.a3 Bd6+=) 10...Nc6? (better is 10...d5 11.Qe2 Kd7+-) 11.b5 Nb4 (11...Ne7 12.Bb7 Rb8+-) 12.0-0 (12.Bb7?! Rb8 13.0-0 Rb7 14.Qe1 Be7 15.Qb4 c5+-) 12...Be7 13.Bb7 (better is 13.a3 Nc2 14.Qc2 d5+-) 13...Rb8 14.Bc6?? (14.Bf3 Rb5 15.a3 Nbd5+-) 14...Kf7?? (better is 14...Nc6 15.c4 a6=) 15.a4 (better is 15.Bd4 Nc6 16.bc6 a6+-) 15...Rb6? (better is 15...Nc6 16.Bc3 Qd7 17.bc6 Qc6+-) 16.Re1 (16.Bd4 Nc6 17.Bb6 ab6 18.bc6 Qa8+-) 16...d5?? (better is 16...Nc6 17.Na3 d5+=) 17.Ba3 (better is 17.Bd4 Nc6 18.Bb6 (18.bc6?! Rc6 19.Ba7 d4+-) 18...ab6 19.bc6+-) 17...Nc6 18.bc6 Rc6?? (better is 18...Re8+-) 19.Re7 Qe7 20.Be7 Ke7 21.Ra3 Rb8 22.Rc3 Re6 23.Rc7 Kd6 24.Ra7 Ng4 25.Rg7 Rf8 26.g3 Nf6 27.Nc3 d4 28.Nb5 Kc5 29.Rc7 Kb6 30.Qa1 Nd5 31.Qd4 Ka6 32.Qa7 1–0. nordlicht (2095) – harzer, gameknot.com, 2006.

4.Bb2 Nf6 5.Nf3 Nbd7 (5...d5 6.a3+=) 6.e3+/- Nb6 7.Be2 a6 (7...d5 8.a3+/-) 8.0-0 h6 (8...d5 9.a3+/-) 9.c4 Bd7 10.Nc3 Ne4 (10...Be7 11.d4+-) 11.Nd4 Nc3 12.Bc3 Qe7 (12...Rg8 13.Qb3 Ba4 14.Qb1+-) 13.Bh5 (13.a4 Qf7+-) 13...Kd8 14.Qf3 c6 15.d3 Na4 16.Bd2 Nb2 (16...Qg5 17.b5! ab5 18.cb5+/-) 17.Nf5 Qg5 18.Bg4 (18.Ng3 Be7+-) 18...h5 (18...Nd3 19.Bc3 h5 20.Bh3+-) 19.Bh3 Nd3 20.Rfd1 (20.Bc3 Ne5 21.Be5 de5+-) 20...Qf6 21.Be1?? (better is 21.e4 Ne5 22.Qg3+-) 21...Ne1+= 22.Re1 g6 23.Nd4 Qf3 24.Nf3 (24.gf3? Bh3 25.f4 Kd7–+) 24...Bh3 25.Ng5 (25.gh3 Bg7 26.Rad1 Ke7+=) 25...Rg8 (better is 25...Bg7!? 26.Nf7 Kd7 27.Nh8 Ba1 28.Ra1 Bf5+= (worse is 28...Rh8 29.gh3 Re8 30.Rd1=)) 26.Nh3+/- Kc7 27.Red1 Bg7 28.Rac1 Bb2 29.Rc2 Ba3 30.Rb1 c5 31.bc5 Bc5 32.Nf4 Rae8? 33.Nd3 Ba7 34.c5 dc5+/- 35.Nc5 Bc5 36.Rc5 Kb8 37.Ra5 Re6+/- 38.h3 Rf8 39.Rg5 Rf5 40.Rf5 gf5 41.Rd1 b5 42.Rd5+- f4 43.ef4 h4 44.Rd2 Rf6 45.g3 Kc7 46.Rd4 hg3 47.fg3 Kc6 48.Kf2 Kc5 49.Rd2 b4 50.Kf3 a5 51.g4 Rd6 52.Rc2 Kb5 53.g5 Rd3 54.Kg4 a4 Black plans b3 55.g6 Rd8 56.g7 Rg8 57.Rc7 Kb6 58.Re7 b3 59.ab3 a3 60.Re2 Rg7+= 61.Kf3 Kb5 62.Re4 Ra7= 63.Re1 Kb4 64.f5 a2–/+ 65.f6 Rf7 66.Ra1? Rf6 67.Kg4 Kb3 68.h4 Kb2 69.Ra2 Ka2 70.Kg5 Rf8?? 71.h5= Kb3 72.h6 Rg8 ½–½. jammboy – dhub noire, ChessWorld.net, 2007.

4.Bc3 Nf6 +=.

4.Bg3?? Qf6?? (4...f4 5.Bf4 Qf6 6.d4 Qf4 7.e3–+) 5.c3?? (better is 5.Nc3+/-) 5...f4–+ 6.Qa4 Bd7 7.b5 fg3 8.hg3 Nh6?? (8...c6 9.e3–+) 9.e4?? (9.Qe4 Qe5 10.Qb7 Qb5 11.Qa8+/-) 9...Ng4 10.Nh3 Ne5 11.Be2 Bh3 12.Rh3 Nbd7 13.d4 Ng6 14.b6 cb6 15.Bg4 Qf7 16.Nd2 a6 17.d5? b5 18.Qd1 Nde5 19.Be6 Qf6 20.Qe2 Be7 21.g4?? Nf8 22.Nf3 Ne6 23.Ne5 Nf4 24.g5 Qe5 25.Qe3 Nh3 26.Qh3 Bg5 27.f3 Qc3 28.Kf2 Qa1 29.Qh5–+ g6 30.Qg4 Be7 31.Qe6 Qf6 32.Qg4 0-0 33.Qd7 Qd4 34.Kg3 Qe5 35.Kh3 Qh5 36.Kg3 Qh4 0–1. pinecrest1981 – Peredur, Live Game Caissa's Web, 2004.

4.a3 a5 5.b5 d6 6.Bb2 a4 (6...Be7 7.e3+-) 7.c4 (7.e3 Be7+-) 7...b6 (7...Nbd7!?+=) 8.Nc3 (8.e3 Be7+-) 8...c5 (8...Be7 9.Nf3+-) 9.Na4 (9.bc6 Nc6 10.Na4 Ne5+-) 9...Be6 (9...d5 10.cd5 Nd5 11.e3+-) 10.e3 (10.Bf6 gf6 11.e3 d5+-) 10...Nbd7 (10...Be7 11.Nh3+-) 11.Nc3 (11.Nh3 d5+-) 11...Be7 (11...d5 12.d3+-) 12.d3 0-0 (12...Ne5 13.Nh3+-) 13.Be2 (13.Nh3 Ne5+-) 13...d5 14.Bf3 (14.Nf3 f4+-) 14...Rc8 (better 14...Ne5!? 15.Bd5 Nd5 16.Nd5 Bd5 17.cd5 Qd5 18.Be5 Qe5 19.Qb3 Rf7+-) 15.cd5 Bf7 16.e4 (16.Nh3 Kh8+-) 16...Ne5 17.Be2 fe4 (17...c4 18.f3+-) 18.de4 1–0. jaddwarrior (2010) – Cocodiabolo (1970), ChessWorld.net, 2013.

4.a3 Nc6 5.Bb2 Be7 (5...d5 6.Nf3+=) 6.g3 (6.Nf3 0-0+/-) 6...0-0 7.Bg2 d5 8.Nf3 (8.Nh3 a5+=) 8...Re8 (8...a5 9.b5 Na7 10.a4+=) 9.0-0+/- b6 (9...a6 10.Re1+/-) 10.d3 (10.c4 Nb8+/-) 10...Ba6 (10...a6 11.c4 Qd6 12.Nbd2+/-) 11.Nbd2 Bd6 (11...b5 12.c4! Qd6 13.cb5 Bb5 14.a4 Bd3 15.ed3 Nb4 16.Be5+-) 12.Rb1 (12.c4 Bb7+-) 12...b5 (12...Ne5 13.Be5 Be5 14.Ne5 Re5 15.b5+/-) 13.Nb3 (13.Nh4 Ne7+-) 13...Nd7 (13...Bc8 14.c4! a6 15.Ng5+-) 14.Rc1 (better is 14.Nfd2 Ne7 15.c4+/-) 14...Nce5?? (better is 14...Nb6!?+/-) 15.Be5 (better is 15.Ne5 Ne5 16.Bd5 Kh8 17.Ba8 Qa8 18.Nd4+-) 15...Ne5 16.Ne5 Be5 17.d4 (better is 17.Nc5!? Bc8 18.c4+-) 17...Bf6+/- 18.Nc5 Bc8 19.Re1 c6 20.a4 ba4 21.Na4 Ba6 22.Nc5 Bc4 23.e3 a5 24.ba5 Qa5 25.Nb7 Qc7= 26.Rb1 Reb8 27.Nc5+= Re8 28.c3 Bb5? 29.Qc2 Qc8? 30.Bf1 Bf1+/- 31.Rf1 h5 32.c4+- h4 33.cd5 cd5 34.Qb3 Qc6 35.Rfc1 hg3 36.Ne4?? gh2 37.Kh2+/- Qc1?? 38.Nf6+- gf6 39.Qd5 Kg7 40.Rc1 Rad8 41.Rc7 Kg6 42.Qg2 Kh6 43.Rg7 1–0. coloplayah (1930) – gdraper (1850), net–chess.com, 2005.

4.a3 Nc6 5.Bf6 Qf6 6.Nc3 a5 (6...b6 7.e3+=) 7.b5+/- Ne7 8.Nf3 g5 9.h3 (9.e3!?+/-) 9...b6+= 10.e3 Bb7 11.Bc4. chriscooperden (2080) - fatguywes (2085), gameknot.com, 2017.

4.a3 d6 5.Bb2 +=.

4.Nf3 Bb4!? 5.Nc3 0-0 =.

4.Nf3 Bb4 5.e3 d6 6.Bb2 0-0 7.c4 c5 8.Nc3 Nc6 9.Nd5 Nd5 10.cd5 Ne5 11.Ne5 de5 12.Bc4 a6 (better is 12...Qd6!?+=) 13.d6+= Kh8 14.a3 Ba5 15.Be5 b5 16.Bd5 Ra7 17.Qc2 c4 18.a4 Qg5? (better is 18...Bb7!? 19.Bb7 Rb7 20.ab5 Rb5+/-) 19.0-0 Bb6 20.Qb2 Bd7 21.f4 Qh6 22.Rf3 Be8 23.Rh3 Qg6 24.ab5 ab5 (24...Bb5 25.Rg3 Qh6 26.Ra6 Be3 27.de3 Ba6+-) 25.Ra7 Ba7 26.Rg3 Qh5 (26...Rg8+-) 27.Bg7 1–0. Janek – herve, internet, 2016.

4.Nf3 d6 5.Bd4 b5 (5...Nc6!?+=) 6.e3 a6 7.Bd3 (7.a4 c5 8.Bb2 ba4 9.bc5 dc5+/-) 7...Nc6 (7...c5 8.Bc3 cb4 9.Bb4 Nc6+/-) 8.0-0 (8.c3 Bd7+/-) 8...h6? (better is 8...Nb4!? 9.Be2 c5+=) 9.a3 Nd4 10.Nd4 g6 11.Qf3 Bd7 12.Nc3 c6? (better is 12...Bg7+/-) 13.Nc6+- Qc8 14.Ne5?? (better is 14.Nd4+-) 14...de5+= 15.Nd5? Nd5–+ 16.Qd5 Be7?? 17.Qe5+= Kf7 18.e4 Bf6–/+ 19.Qd5 Be6–+ 20.ef5?? gf5 21.Bf5?? Rd8 22.Be6+= Qe6 23.Qe6 Ke6+= 24.Rae1 Kf7 25.Re4? Rd2 26.Rc1 Rc8 27.Kf1 Rdc2 28.Rc2 Rc2 29.Rf4 Ra2 30.h4 Ra3 31.g4 Ra1 32.Kg2 Ke6 33.h5 Bg5 34.Re4 Kd5 35.f3 Rb1 36.Kf2 Rb2 37.Kg3 Bd2 38.Re2 Bc3 39.Rb2 Bb2 40.Kf4 Ke6 41.g5 Bc1 42.Kg4 hg5 43.h6 Kf7 44.Kh5 Bd2 45.Kg4 Kg6 0–1. Blum,Steffen (1910) – Korn,Lothar (1700), remoteschach.de, 2009.

3.a3 c6 4.Nf3 c5? 5.Be5+- Qg6 6.b5 (6.Nc3 d6 7.Bg3 cb4 8.ab4 Na6+-) 6...d6 7.Bb2 a6 8.a4 (8.Nc3 Nf6+/-) 8...ab5 9.ab5 Nd7?? (better 9...Ra1 10.Ba1 Be6+/-) 10.Ra8+- Kd8 (10...Nb6 11.Ra7+-) 11.e3 Nb6 12.Ra1 Nc4 (12...d5+-) 13.Bc4 Be6 (13...Be7 14.d4 Bf6 15.Ne5 Be5 16.de5+-) 14.Be6 Qe6 15.0-0 Qg6 16.d4 Be7 17.c4 (better 17.Ra8 Kc7 18.dc5 dc5+-) 17...Bf6 18.Nbd2 (18.Ra8 Ke7+-) 18...cd4 19.Nd4 Bd4 20.Bd4 Nf6 21.Qf3 (better 21.Ra8 Kd7 22.Rh8+-) 21...Qg4 22.Bf6 gf6 23.Qg4 Re8 (23...Ke7 24.Qe4 Kd7 25.Qb7 Ke6 26.Qd5 Ke7 27.Ra7 Kd8 28.Qa8) 24.Nf3 (24.Ra8 Ke7 25.Qe4 Kf8 26.Re8 Kg7 27.Qg4 Kh6 28.Rg8 d5 29.Qh4) 24…Re3 1-0. BeepBeepImAJeep (2685) - rebiszartur (1690), lichess.org, 2016.

3.a3 h6 4.Nf3 d6 5.e3 Bg4 6.Be2 Bf3 (6...Be6!?=) 7.Bf3+/- Ne7?? (better is 7...c6+/-) 8.Bb7+- a6 9.Ba8 c6 10.0-0 Nd5 11.c4 (better is 11.Qe2 Qe7 12.Bc6 Nc6+-) 11...Nb6 12.Bb7 Qe7 13.Bc6! Nc6 14.Qf3 Nc4 15.Qc6 Qd7 16.Qc4 d5 17.Qa6 Qd8 18.Be5 f6 19.Qc6 Kf7 20.Qc7 Qc7 21.Bc7 g5 22.Nc3 Bg7 23.Nd5 f5 24.d4 f4 25.b5 f3 26.b6 g4 27.b7 fg2 28.Kg2 h5 29.b8Q Rb8 30.Bb8 h4 31.f4 h3 32.Kg3 Ke6 33.Nc3 Kf5 34.e4 Kg6 35.e5 Kh5 36.d5 Bf8 37.d6 Kg6 38.d7 Be7 39.Bd6 Bd8 40.e6 Kf6 41.f5 Ba5 42.Nd5 Kg5+- 43.e7 Bd2 44.e8Q Bf4 45.Bf4 Kf5 46.Qe5 Kg6 47.Qf6 Kh5 48.Qg5 (48.Qf5) 1–0. Fournier,Frederic (1925) – joseborges01 (1625), Active (5/0), 2004.

3.a4 Bb4!? 4.Nf3 d6 –/+.

3.a4 d6 4.e3 Nh6 5.f4 Qe6 6.Nf3 ef4–/+ 7.Be2 fe3 8.de3 Qe3 9.Bd4–/+ Qf4 10.0-0 Be7 11.Bg7 Rg8 12.Bh6 Qh6–/+ 13.Bd3?? Qg7–+ 14.Nbd2 Qg2# 0–1. Bonny – hollsan, internet, 2007.

3.b5 Bb4 4.Nf3+= Ne7? 5.Be5+- Qb6 6.Bg7 Rg8 7.Bc3 Qb5 8.e3 Qc5 9.Bb4 Qb4 10.Nc3 d5 11.Ne5 c5?? 12.Qf3 Be6 13.Rb1 Qa3 14.Nc4!! Qa6 15.Nb6 (15...Qb6 16.Rb6 ab6 17.Bc4+-) 1–0. Wall,Bill – Mystic, internet, 2001.

3.b5 b6 4.Nf3 Bd6 5.e3 Ne7 6.d4 e4 7.Ne5 0-0 8.Be2 Nf5 9.0-0 Re8 10.Bc4 Be5 11.de5 Qg6 12.Nd2 Nh4 13.g3 Nf3?? (better is 13...Bb7=) 14.Nf3+- ef3 15.Qf3 c6 16.a4 Bb7 17.e4 c5 18.Bd5 (better is 18.Rfe1!?+-) 18...Bd5+/- 19.ed5 d6 20.e6 fe6 (better is 20...a6 21.a5 ab5 22.ab6 Ra4+-) 21.de6 Rf8?? (21...Na6 22.ba6 Rab8+-) 22.Qa8 Nd7 (22...Qe6 23.Qa7 Nd7 24.c4+-) 23.Qa7 (better is 23.Qd5!? Nf6 24.Bf6 Re8 25.e7 Qf7 26.Qf7 Kf7+-) 23...Nf6 (23...Qe6 24.c4+-) 24.e7 Re8 25.a5 ba5 26.Ra5 Nd5 27.b6 Re7 (27...Ne7 28.Re1 Kf8+-) 28.Qa8 Kf7 29.Qd5 Ke8 30.Ra8 Kd7 31.b7 Re5 32.Qg8 Re8 33.Re8 Qe8 34.Qg7 (34...Kc6 35.Rd1+-; 34.Qe8 Ke8 35.b8Q Kf7 36.Qb7 Kg6 37.Qg7 Kf5 38.Qf7 Kg5 39.h3 d5 40.Bc1) 1–0. stoker – saturn, Live Game Caissa's Web, 2004.

3.b5 Qb6 4.Be5 Qb5 (4...d6!? 5.Bc3 Qb5+=) 5.Bc7+/- Qb2 (5...Qc6!? 6.Be5 Qe6+/-) 6.Nc3+- Nc6? (better 6...Qb4!?+-) 7.a3! Nd4 (7...Qa3 8.Ra3) 8.Ra2 Nc2 9.Qc2 Qc2 10.Rc2 Ba3 (10...b6+-) 11.Nb5 Bb4 (11...Bf8 12.Bd6 Bd6 13.Nd6 Ke7 14.Nc8 Ke6 15.Nf3+-) 12.Be5 (12.Bf4 Kd8 13.Nc7 Rb8+-) 12...Kf8 13.Nc7 d6 (13...Rb8 14.Nd5 d6 15.Bg3+- (15.Nb4?! de5 16.Nf3 e4+-)) 14.Na8 de5 (14...Ne7 15.Bb2+-) 15.Rc8 Ke7 16.Rb8 b6 17.Rb7 Kf6 (17...Kd6 18.Ra7 Ba5 19.Nf3+-) 18.Ra7 Nh6 19.Nb6 Rd8 20.Nc4 Nf5 21.Nf3 Nd6 (21...e4 22.Ra6 Nd6 23.Nd4+-) 22.Nce5 Ne4 23.Rf7 Ke6 24.g3 Nd2 Threatening mate... how? 25.Bh3 Kd5 26.Kd1 Nf3 27.Nf3 Ke4 28.Kc2 (28.Kc2 Rd6 29.Rf5 Rc6 30.Kb3 Rc3 31.Kb4 Rf3 32.ef3 Kd3 33.Bf1 Kd2 34.Re5 h6 35.Bc4 g5 36.Re2) 1-0. DEFFM – GuestJYQQ, freechess.org, 2020.

3.b5 d6 4.g3 Nh6 5.f4 Ng4 6.Nf3 Be6 7.h3 Nd7? (better is 7...Nh6=) 8.hg4+- Bg4 9.Bg2 0-0-0 10.d3 Nb6 11.c4 d5 (11...Qg6 12.Nh4 Qe6 13.a4+-) 12.Be5 Qe6 13.cd5 Nd5 14.Qc1 Bd6 15.Nc3 (15.Bg7 Ne3 16.Nd4 Ng2 17.Kf2 Qe8 18.Kg2 Rg8+-) 15...Bb4 16.0-0 (16.Ng5 Qe7 17.Bd5 Rd5+-) 16...Bc5? (16...Nc3 17.Bc3 Bc5 18.d4 Bf3 19.Rf3 Rd4+-) 17.d4 Bb6 18.Nd5 Qd5 19.Bg7 Rhe8 20.e3 Rg8 21.Be5 Rd7 22.a4 Rg6 (22...Ba5+-) 23.Nh4 Qe6 24.f5 Bf5 25.Rf5 Rh6 26.a5 Ba5 27.Ra5 Qb6 28.Rg5 (better is 28.Qa3 a6+-) 28...Re7 (28...Qa5 29.Rg8 Rd8 30.Bb7 Kb7 31.Rd8 a6+-) 29.Ra7! Qa7 30.Bh3 (30.Rg8 Kd7 31.Qc7 Ke6 32.Qd6) 30...Rhe6 (30...f5 31.Bf5 Rhe6 32.Rg8 Kd7 33.Qc7) 31.d5 (31.Rg8 Kd7 32.Qc7) 31...Qb6+- 32.de6 fe6 33.Rg8 Re8 34.Be6! Qe6 (34...Kb8 35.Re8 Ka7 36.Qa3 Qa6 37.Bd4 c5 38.Bc5 b6 39.Qa6) 35.Qc7# 1–0. The Desert Fox (2010) – Piwackett (1670), ChessWorld.net, 2003.

3.b5 Bd6 4.d4 Nh6 5.Nd2 0-0 6.Ngf3 c6?? (better 6...ed4 7.Ne4 Qe7 8.Nd6 Qd6 9.Qd4 Qd4 10.Bd4 d6+=) 7.de5+- Be5 8.Be5 Qe6 9.e3 cb5 10.Bb5 Nc6 11.Bf4 a6 (11...d5 12.Bd3 Qf6 13.0-0+-) 12.Ng5 Qf6 (12...Qg6 13.Bd3 f5 14.Qf3+-) 13.Bd3 Ng4 (13...g6 14.Nge4 Qg7 15.Nd6+-) 14.h3 Nge5 (14...h6 15.Nge4 Qe6 16.hg4+-) 15.Bh7 Kh8 16.Qh5 Ng6 (16...Qh6 17.Nf7! Nf7 18.Bh6 Kh7 19.Bf4 Kg8+-) 17.Bg8! Kg8 (17...Kg8 18.Qh7 Mate attack) 18.Qh7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.c3 c5 4.bc5 Bc5 5.e3 Nh6 6.Nf3 g5 (6...e4 7.d4 Be7 8.Nfd2=) 7.h3 (7.Ne5 Qe5 8.d4 Bd4 9.cd4 Qf6+/-) 7...Qg6 (better is 7...e4 8.Nd4 Nc6=) 8.Qc2?? (better is 8.Ne5 Qb6 9.Nd3+-) 8…Qc2–+ (8...Qc2 9.Ba3 Ba3 10.Na3 Qb2–+) 0–1. Fournier,Frederic (1835) – pedrocom (1900), Active blind, 2011.

3.c3 Nh6 4.e3 Be7 5.Nf3 0-0 6.d3 (6.c4 d6=) 6...d5+= 7.Be2 Bf5 8.Nbd2 Qg6 (8...Rd8 9.0-0+=) 9.0-0 (9.Ne5 Qe6 10.Nef3 Qg6+/-) 9...b6?? (better is 9...Nd7+=) 10.h3?? (10.Ne5 Qe6 11.Nef3 Qg6+/-) 10...c5?? (10...Bh3 11.Ne1 Be6 12.c4–/+) 11.a3?? c4?? 12.dc4 dc4? 13.Nc4?? Nc6?? 14.Ncd2?? Rad8 15.Qc2?? Bc2–+ 16.Rac1 a5 17.Rc2 Qc2 18.Ba1 ab4 19.ab4 Qc3! 20.Bc3 Bb4 21.Bb4 Nb4 22.Rb1 Nd3 23.Bd3 Rd3 24.Rb6 Rfd8 25.Rb1 Nf5 26.Kh2 Ne7 27.Rd1? Nd5 28.Rh1 Nc3 29.Rg1? Ne2 30.Rh1? Rd2 31.Nd2 Rd2 32.Rd1 Rd1 0–1. Fournier,Frederic (1975) – Westerlo (2170), Active, 2009.

3.d3 Bb4 4.c3 Ba5 5.g3 b5 6.Ba3? Bb7 7.Bb4?? Bh1 8.Ba5 Nc6 9.Bc7 Nh6 10.e3 0-0 11.e4 Rfc8 12.Be5 Ne5 13.d4 Nc4 14.e5 Qa6 15.Nd2 Qa3 16.Nb1 Qb2 17.Nd2 f5 18.Nc4 bc4 19.f3 a5 20.h3 Rc6 21.d5 Rg6 22.g4 fg4 23.f4 gh3 24.Qh5 Qa1 25.Kf2 Ng4 26.Ke2 h2 27.f5 hg1Q (28.Qh7 Kh7 29.fg6 Kg6 30.Kd2 Qe3 31.Kc2 Qec3#; 27...hg1N 28.Kd2 Nf3 29.Kc2 Ne3#) 0–1. Matthias – morphois, mySchach.de, 2004.

3.d3 Nc6 4.Nf3 Bb4–/+ 5.c3 Ba5 6.g3 Nge7 7.Na3 Nd5 8.Qc2? 0-0 9.0-0-0 d6 10.c4 Ndb4 11.Qb3 Bg4 12.h3 Bf3 13.ef3 Nd4 14.Qc3?? Na2 15.Kd2 Nc3 16.Bc3 Nf3 17.Kc2 Bc3 18.Kc3 Nd4 19.Rd2 e4! 20.de4 Nf3 21.Kc2 Nd2 22.Kd2 Qd4 23.Bd3 Qf2 24.Be2 Qg3 25.Bf1 Qa3 (26.Bd3 f5–+; better is 25...Qf4 26.Kc3 Qf3 27.Bd3 Qh1 28.Nb5–+) 0–1. Gregor123 – Steini007@, mySchach.de, 2004.

3.d3 d6 (--> 1.b4 e5 2.Bb2 d6 3.d3 Qf6).

4.e3 Nh6 5.d3 Ng4 6.Nf3 e4?? (better is 6...Nd7=) 7.Bf6+- gf6 (7...Nf6 8.Nd4+-) 8.Nd4 Bh6 (8...f5 9.Nb5 Na6 10.de4 de4 11.h3+-) 9.Nc3 Rg8 (9...ed3 10.Nd5 Kd8 11.Nb5+-) 10.Nd5 Be3 (10...Kd8 11.de4 Nd7 12.Nf5+-) 11.fe3 Rg6 12.Nc7 Kd8 13.de4 Kc7 14.Nb5 Kb6 15.Qd8 Kc6 16.Nd4 1–0. Janek – Interno, internet, 2016.

3.e4 Nc6 4.b5= Nd4 5.Bd4 ed4 6.Nf3 c5 7.c3 dc3 8.Nc3 Ne7 9.Be2 b6 10.0-0 (10...Bb7 11.d4+=). tradicio – monas, ChessWorld.net, 2005.

3.Nf3= a5 4.Be5+/- Qb6 5.ba5 Qa5 6.e4 Bd6?? (better is 6...Nc6 7.Bc3 Qa4+/-) 7.Bg7+- 1–0. Wall,Bill – Batka, chess.com, 2008.

3.Nf3= b5 4.Be5+/- Qf5 5.d3 (5.Nc3 c6+/-) 5...d6 6.e4 Qg6 7.Bb2 Nh6 (7...a5 8.ba5 Ra5 9.Qd2+/-) 8.c4 (8.a4 d5 9.ed5 Bb4 10.c3 Bd6 11.ab5 0-0+/-) 8...Ng4? (better is 8...bc4!? 9.Nbd2 cd3+/-) 9.h3 Nh6 (9...Ne5 10.cb5 Qf6 11.Nd4+-) 10.Nh4 (better is 10.Nc3 c6 11.cb5+-) 10...Qg5+/- 11.Nf3 (better is 11.g3+/-) 11...Qg6+- 12.Nc3 bc4? (12...c6 13.cb5 d5 14.Qa4 de4 15.de4+-) 13.dc4 (better is 13.Nd5 f5 14.Nc7 Kd8 15.ef5 Bf5 16.Na8 Bd3 17.Bd3 cd3 18.0-0+-) 13...Na6 (13...a5 14.Qe2 c6 15.b5+-) 14.a3 (14.Qa4 Kd8 15.Ne5 de5 16.Rd1 Bd6 17.c5 Nc5 18.bc5+-) 14...Be6?? (14...Bb7+-) 15.c5 (15.Qa4 Bd7 16.Qa6 c6+-) 15...dc5 (15...Nb8 16.Nb5 Na6+-) 16.Bb5 c6 (16...Ke7 17.Nh4 Qg5 18.Nd5 Bd5 19.Nf5 (19.Ba6?! Bc6 20.g3 Ke8+=) 19...Nf5 20.Qd5+-) 17.Bc6 (17...Ke7 18.Ba8 Qg2 19.Rh2+-) 1–0. kamera – vis2000, GameColony.com, 2002.

3.Nf3 c5 4.a3 cb4 (4...Nc6 5.Nc3 e4 6.b5 ef3 7.bc6 dc6 8.gf3=) 5.Be5 (5.ab4 Nc6 6.b5 Nd4+/-) 5...Qe6 (5...Qf5 6.ab4 Nc6 7.g4+=) 6.ab4+/- Bb4?? (better is 6...Nc6 7.Bb2 Nb4+/-) 7.Bg7+- Nf6 8.Bh8 Kf8 (8...Nc6 9.Nc3+-) 9.Ng5 Qf5 10.Bf6 Qf6 (10...Kg8 11.Nh7! Kh7+-) 11.Nh7 Kg7 12.Nf6 Kf6 13.Nc3 Bd6 14.Nd5 (14.e3 Nc6 15.Qh5 Kg7 16.Qg5 Kf8 17.Qh6 Ke7 18.Nd5 Ke8 19.Qd6 b5 20.Qf6 d6 21.Bb5 Bb7 22.Qe7) 14...Ke6 15.e4 Bc5 16.Qg4 Kd6 17.Qf4 Kc6 (17...Ke6 18.Qf6) 18.Qc7 1–0. Mart – oppo, internet, 2015.

3.Nf3 Bc5?? 4.bc5 d5 (4...d6+-) 5.Be5 (worse is 5.Ne5 Nc6 6.Nd3 d4+-) 5...Qg6 6.Bc7 Na6 7.Bd6 Bg4 8.e3 Rd8 9.Nc3 b6 (9...Nb4 10.Bb5 Bd7 11.0-0+-) 10.d4 (better is 10.Bd3 Bf5 11.Bb5 Bd7 12.Ba6 bc5+-) 10...bc5 11.Bc5 (better is 11.dc5 Nb4 12.Rb1 Rd6 13.cd6 Qd6+-) 11...Nc5 12.dc5 Bf3 13.Qf3 Qc2 14.Nd5 Nf6 (14...Qc5 15.Qe4 Ne7 16.Ne7 Qe7 17.Bb5 Kf8 18.Qa4+-) 15.Nf6 gf6 16.Be2 (better is 16.Bb5 Ke7 17.0-0 Qc5 18.Rab1+-) 16…Qc3–+ (16...Qc3 17.Kf1 Qa1 18.Bd1 Qd1 (18...Rd1?! 19.Ke2 Rh1 20.Qc6 Kd8 21.Qd6 Kc8 22.Qc6 Kb8 23.Qd6 Kb7 24.Qd7 Ka8 25.Qc6 Kb8 26.Qd6 Kc8 27.Qc6 Kd8 28.Qd6 Ke8 29.Qb8 Ke7 30.Qd6 Ke8 31.Qb8 Kd7 32.Qd6 Ke8=) 19.Qd1 Rd1 20.Ke2 Rh1–+) 0–1. Fournier,Frederic (1935) – jefe, Active, 2005.

3.Nf3 c6 4.Be5 Qe6 5.e3 Nf6 6.a3 a5 7.ba5 Ra5?? (7...d5 8.c4!+/-) 8.d4 (better 8.Bb8 d5 9.Nd4+-) 8...d6+/- 9.Bg3 Nh5 10.Bd3 Ng3 11.hg3 (worse 11.fg3 Qe3 12.Qe2 Qe2 13.Ke2 d5=+) 11...h6 12.Nbd2 (12.c4 Be7+/-) 12...Qf6 (12...d5 13.a4+=) 13.Ne4 (13.c4 Qe7+/-) 13...Qe7 (13...Qd8 14.a4+=) 14.0-0 (14.c4 d5 15.cd5 cd5+/-) 14...Na6 (14...d5 15.Ned2+=) 15.Qd2 b6 (15...Qd8 16.Qc3+/-) 16.Rfb1 d5 (16...Qd8 17.Qc3 Qc7 18.Ned2+/-) 17.Rb6+- de4? (better 17...Ra3 18.Ra3 Qa3+-) 18.Qa5 ef3 (18...ed3 19.cd3 Qa7+-) 19.Ba6 Ba6 20.Rb8 Kd7 21.Qa6 Ke6 (21...Kd6 22.Qa8 Qc7 23.Rf8 Rf8 24.Qf8 Ke6 25.Qg7 fg2 26.Qh6 Ke7 27.Kg2+-) 22.Qc6 Qd6 23.Qf3 (better 23.Re8 Be7 24.Qd6 (24.Rh8?! Qc6 25.gf3 Qc2=) 24...Kd6 25.Rh8 fg2 26.a4+-) 23...Qb8 24.c4 Ke7 25.Qd5 (25.Qe4 Kd8 26.Rb1 Qc8+-) 25...Ke8 26.c5 Be7 27.Qe4 Kf8 (27...Qc8 28.Rb1 f5 29.Qf4+-) 28.Rb1 Qc8?? (28...Qd8+-) 29.Rb7 (29.Qe5 f6 30.Rb8 fe5 31.Rc8 Kf7 32.Rh8 Ke6+-) 29...Bf6 (29...Qe8 30.c6 Bd6 31.Qd5+-) 30.c6 (better 30.Ra7 Bd8 31.Qd5 Bc7+-) 30...Kg8 (30...g5 31.Qd5 Rh7 32.Qd6 Kg7 33.Rb8+-) 31.d5 (better 31.c7 Bd8 32.Qc2 Qc7 33.Rc7 Bc7 34.Qc7+-) 31...h5 (31...g6 32.d6 Kg7 33.d7+-) 32.Qf4 (32.d6 g6 33.Qc4+-) 32...h4 (32...Kh7+-) 33.Rb8 Qb8 34.Qb8 Kh7 35.Qf4 g5 (35...Rf8+-) 36.Qf6 Rg8 (36...Rg8 37.c7 Rf8 38.gh4 gh4 39.Qh4 Kg7+-). ClayPigeons (2195) - Jony2712u (2225), Rated Bullet game, lichess.org, 2021.

3.Nf3 e4 4.Bf6 Nf6 5.Nd4 Bb4 6.c4 (6.a3 Bc5 7.e3 0-0+-) 6...d5 (6...Nc6 7.Nc6 dc6 8.Qb3+-) 7.Qa4 Nc6 (7...Nbd7 8.Qb4 c5 9.Qb2 cd4 10.Qd4 dc4 11.Nc3+-) 8.Nc6 Bd7 (8...Bd6 9.Ne5 c6 10.d4+-) 9.Qb4 bc6 (9...Bc6 10.cd5 Bd5 11.Nc3+-) 10.Qc5 Kd8 (10...h5 11.Nc3 h4 12.Rb1+-) 11.Nc3 a5 (11...dc4 12.Qc4 Be6 13.Qc6+-) 12.cd5 cd5 13.Nd5 Nd5 14.Qd5 c6 15.Qf7 Kc7 16.Qf4 Kc8 17.e3 1–0. michaelbuss (2780) – dingleberries, ChessWorld.net, 2011.

3.f4 Bc5 4.Nf3 Qf4 5.Be5 Qb4 6.Bg7 Bd4 7.Bd4 f6 8.a3 Qb5 9.Nc3 Qc6 10.e4 d6 11.Bb5 (11...h6 12.Bc6 Nc6 13.Nd5+-) 1–0. rewe – kilmer46, Live Game Caissa's Web, 2004.

3.f4 ef4?? 4.Bf6+- gf6 (4...Nf6 5.Nh3+-) 5.Nf3 b6 6.g3 Bd6 7.b5 c6 8.a4 Ne7 9.c4 fg3 10.hg3 Bg3 +-. conanthagod – darious, internet, 2007.

3.f4 Qf4 4.a3 d5 –/+.

4.ba5 Ra5 5.Bc3 Bc5? 6.Nf3+/- Ra8 7.Be5 Qg6 8.d4 Bd6 9.Bd6 cd6 10.Nc3 Ne7 11.Nb5 0-0 12.e3 Nd5 13.Bd3 Qg2 14.Rg1 Qh3 15.Bh7?? Kh8?? 16.Be4+- Nf6 17.Nd6 Ne4 18.Ne4 f6 19.Rg3 Qe6?! 20.Qd3 b6 21.Neg5! fg5 22.Ng5 Qf6 23.Qh7# 1–0. Chairboy – ChessNo1, ChessWorld.net, 2005.

4.b5 Bc5 5.e3 d5 6.Nf3 d4 (6...Bd6 7.c4 dc4 8.Bc4=) 7.Be2 (7.Qe2 Ne7 8.ed4 ed4+/-) 7...e4 (better is 7...Ne7!?=) 8.Nd4 Qg6 9.Rg1 Bh3 (9...Nf6!?+=) 10.d3+- Nd7 11.g3 Ne5 12.Nd2 1–0. Rush,Bradley – Selby,Martin, OP–2011–0-01934, 2011.

4.b5 Bc5 5.e3 d6 6.Nf3 Bg4 7.Be2 Nd7 8.d4 ed4 9.0-0 Nh6 (9...Ne5 10.Ne5 Be2 11.Qe2 Qe5 12.Qd3+-) 10.ed4 Bb6 (10...0-0-0 11.Bc3 (worse 11.dc5 Qb2 12.Nbd2 Nc5–/+) 11...Bb6 12.d5=) 11.Re1 (11.Nc3 0-0+=) 11...0-0= 12.Nbd2 (12.h3 Be6=) 12...d5 (12...Rae8 13.c4=) 13.c4+= c6 14.bc6 (14.Qa4 Rfe8+=) 14...bc6= 15.cd5 (15.Qa4 Bc7+=) 15...cd5 16.Ne5?? (better 16.Qb3 Qd6 17.a4+=) 16...Ne5–+ 17.de5 Qf2 (17...Bf2 18.Kh1 Qh4 19.Rf1–+) 18.Kh1–/+ Be6 19.Rf1 Qh4 (19...Qe3 20.a4–/+) 20.Nf3 Qe7 (20...Qh5 21.Bd4 Rab8 22.Rb1 Bd4 23.Qd4–/+) 21.Bd3 (21.Nd4 Rac8–/+) 21...Rac8 (21...Ng4 22.Qe2–/+) 22.Qd2 (22.Bd4 Bd4 23.Nd4 Qg5–/+) 22...Nf5 (22...Ng4 23.Rae1 Rb8 24.Bc1–/+) 23.Rae1 g6 (23...Qa7 24.Bc1–/+) 24.Bf5=+ Bf5 (worse 24...gf5 25.Qh6 Bd8 26.Bc1+=) 25.Qh6 (better 25.Qd5 Rfd8 26.Qb3=+) 25...Rc2?? (better 25...Bd8=+) 26.Rb1?? (better 26.Ng5 Qg5 27.Qg5+-) 26...Be4 (26...Re2 27.Rbe1 Be3 28.Qh4 Qh4 29.Nh4 Rb2 30.Nf5–+) 27.Bc1 (27.Nd2 Bd3 28.Rfc1 Rfc8 29.Rc2 Rc2–+ (29...Bc2?! 30.Rc1–/+)) 27...Bf3–+ 28.Rf3 Qe5 29.Bg5 (29.Be3 Be3 30.Re3 Qf5–+) 29...Qe2 30.Rg3? (30.Qh3 Rfc8 31.Rbf1 R2c3–+) 30...f6 (30...Re8 31.h4 Qf2 32.Bf6 Re1 33.Kh2 Qg1 34.Kh3 Qh1 35.Kg4 Rc4 36.Qf4 Rf4 37.Kf4 Re4 38.Kf3 Qb1 39.Rg6 hg6 40.Kg3 Bc7 41.Be5 Qe1 42.Kf3 Qe3) 31.Bf4 Bf2?? (better 31...Qe4 32.Ra1 Bd4–+) 32.Rg6+- hg6 33.Qg6 Kh8 34.Qh6?? (better 34.Bh6 Rc7 35.Bf8+-) 34...Kg8= 35.Qg6 Kh8 36.Qh6 ½–½. jaddwarrior (1945) – ekaputra (1825), ChessWorld.net, 2014.

4.b5 d6 5.e3 Bd7 6.Nf3 g6 (6...Bg4 7.Be2=) 7.g3 Bg4 8.Bg2 c6 9.bc6 Nc6 10.0-0 Nge7 11.d3 Bg7 12.Nbd2 Bf3 13.Nf3 Qe6 14.c4 0-0 15.Qc2 f5 16.Ng5 Qd7 17.Nf3 Rf7 18.Rad1 f4 19.ef4 ef4 20.Bg7 Kg7 21.Qc3 Kg8 22.Rd2 fg3 23.fg3 Raf8 24.Rdf2 Nf5?? (24...Qg4 25.d4+=) 25.d4?? (25.Ng5 Nd8 26.Nf7 Nf7+-) 25...d5? (25...Qe7 26.Qd2+/-) 26.c5?? (better is 26.cd5 Qd5 27.Ng5+-) 26...Rf6 27.Bh3 (27.Ne5!? Ne5 28.de5+/-) 27...Qg7 28.Bf5 Rf5 29.Qe3 h6 30.Ne5 Ne5 31.de5 Rf2 32.Rf2 Rf2 33.Kf2 Kf7 34.Qd4 Ke6 Attacks the isolani on e5 35.Qf4 g5 (35...g5 36.Qg4 Ke5 37.Qe2 Kf6 38.Qb2 Kg6 39.Qb1 Kf6 40.Qb2 Kg6 41.Qb1 Kf6 42.Qb2=) 0–1. Fournier,Frederic (1605) – SwordSX, Active, 2007.

4.Nf3 Nc6 5.b5+= Nd4 6.Nd4 ed4 7.e3 Bc5 8.Bc4 Qg6 (8...Nh6 9.ed4 Bd4 10.Bd4 Qd4 11.Qe2 Kd8 12.c3=) 9.0-0+/- (worse is 9.Bd4 Bd4 10.ed4 Qg2+=; worse is 9.ed4 Qg2 10.Rf1 Be7=) 9...de3 10.fe3 Nf6 (10...Nh6 11.Nc3+/-) 11.Bf6 gf6 12.d4 (12.Qf3 c6+/-) 12...Bb6 (12...Be7 13.Nc3+/-) 13.Qf3+- Ke7 (13...c6 14.Qf6 Rf8 15.Bd3 Qf6 16.Rf6+-) 14.Nc3 c6 15.Bd3 (15.Na4 Ba7+-) 15...Qh6 16.bc6 (16.Rab1 Bc7 17.g3 Re8+-) 16...dc6 17.Ne4 f5 (17...Bc7 18.Qf6 Qf6 19.Nf6+-) 18.Ng3 Bc7 19.Bf5 Bg3 20.Qg3 Bf5 21.Rf5 Rac8 22.Raf1 Rhf8 23.c4 b6 24.Qe5 Qe6 25.Rb1 b5 26.cb5 cb5 27.Rb5 Rc1 28.Rf1 Rf1 29.Kf1 Qe5 30.Re5 Kd6 31.Ra5 1–0. Wall,Bill – Tower, internet, 2006.

4.Nf3 d6 5.Nc3 =.

4.e4 d6 5.Nc3 Ne7 6.Bc4 Nbc6 7.Nf3 h6 8.0-0 Bg4 9.Be2 Nd4?? 10.Nd4+- ed4 11.Bg4 dc3 12.Bc3 Qg5 13.f4 Qg6 14.f5 Qg5 15.f6 Nc6 16.Rf5 Qg6 17.Bh5 Qh7 18.fg7 Bg7 19.Rf7 0-0-0 20.Qg4 Kb8 21.Rg7 (21...Qg8 22.Rg8 Rhg8 23.Qe6+-) 1–0. Wall,Bill – Ace, internet, 2005.

4.f3 Nc6 5.e4 d6 6.Bc4 Qh4 7.g3= Qf6 8.Nc3 h6 9.Nd5 Qd8 10.Ne2 Nf6 11.0-0 Be7 12.d4 0-0 13.Bc1 Bh3 14.Re1 Nd5 15.Bd5 Bf6 16.Be3 Rb8 17.Qd2 Kh7 18.c4 Ne7 19.de5 Be5 20.Rab1 c6–/+ 21.f4 cd5 22.fe5= de5 23.cd5 f5 24.d6 Ng6 25.ef5 Rf5 26.Nc3 Qf6 27.Ne4+/- Qe6 28.Nc5 Qf6? 29.Nd7+- Qd8 30.Nb8 Qb8 31.d7 Rf8 32.Bb6 Bd7 33.Qd7 Rf3 34.Rf1 Ra3 35.Rf7 Qg8 36.Rbf1 h5 37.Qd1 Qe8 38.Qh5 (38...Kg8 39.Qg6 Qf7 40.Rf7 Ra1 41.Kg2 Ra2 42.Kh3 Rh2 43.Kh2 a5 44.Qg7#) 1–0. Wall,Bill – Ace, internet, 2005.

4.Nf3 Nc6 5.e4 d6 6.c4 Bg4 7.Be2 Bf3 8.Bf3+= Nd4 (8...Qe6 9.Nc3+=) 9.Bd4 ed4 10.0-0 d3 (10...Qe5 11.Bg4+=) 11.Nc3 (11.e5 de5 12.Bb7+/-) 11...Qe6? (better is 11...c6!?+=) 12.Nd5+- Qd7 (12...Kd8 13.Qb3+-) 13.Qb3 c6? (better is 13...Be7+-) 14.Nb6 Qd8 15.Na8 Qa8 16.Qd3 1–0. Wall,Bill – Checkbook, internet, 2004.

4.Nf3 Nc6 5.e4 d6 6.c4 Bg4 7.Be2 Nh6 8.h3 Be6 9.d3 b5 10.Nbd2. coloplayah (2145) – ioanmacea (1845), net–chess.com, 2006.

4.Nf3 Nc6 5.e4 Nge7 6.Nc3 =.

4.e3 Bb7 5.Nf3 Nc6 6.Be2 (6.b5!? Nce7 7.Be5 Bf3 8.Qf3 Qf3 9.gf3+/-) 6...d6 7.0-0 h6 8.c4 a5 (8...0-0-0 9.d4+/-) 9.b5+/- Na7 10.Nc3 Kd7 (10...Ne7!?+/-) 11.d4+- Ne7 (better 11...ed4 12.Nd5 Qd8 13.Nd4 Kc8+-) 12.de5 Qe6 13.Nd4 (13.Na4 d5+-) 13...Qg6 (13...Qe5 14.Bf3 Rb8 15.Bb7 Rb7 16.Qf3+-) 14.Bf3 Bf3 15.Qf3 Rb8 16.Rad1 f6 17.e6 (17.Qh3 Ke8 18.ed6 cd6+-) 17...Kc8 18.Nd5 Nd5 19.cd5 Be7 20.a4 Qe8 21.Nc6 (better 21.Rc1!? g6+-) 21...Nc6 22.bc6 Qf8 23.Qe2 Ra8 24.f4 g5 25.fg5 hg5 26.h3 Qh6 27.Qg4 Qh4? (27...Kb8+-) 28.Qh4 Rh4 29.Bf6 Kd8 (29...Bf6 30.Rf6 Kb8+-) 30.Be7 Ke7 (30...Ke8 31.Rf7 Rb4 32.Bg5 Rc4 33.Rdf1 Rf4 34.R1f4 b5 35.Rf8) 31.Rf7 Ke8 (31...Kd8 32.Rdf1 Rh7 33.Rh7 Ke8 34.Rh8 Ke7 35.Rf7) 32.Rdf1 Rh8 (32...Rh7 33.Rh7 Ra7 34.Rh8 Ke7 35.Rf7) 33.Rc7 (33.e7 Rh7 34.Rh7 b5 35.Rf8) 33...Rf8+- 34.Rf8 (better 34.Rh7 Rf1 35.Kf1 Rd8+-) 34...Kf8 35.Rf7 Ke8 (35...Kg8 36.Rd7 Rc8+-) 36.Rh7 Rd8 37.c7 (37.c7 Ra8 38.Rh8 Ke7 39.Ra8 Kf6 40.e7 Kg6 41.Rg8 Kh5 42.e8Q Kh4 43.Qe4 Kh5 44.Rh8) 1-0. BeepBeepImAJeep - zorigoo_999, lichess.org, 2018.

4.e4 a5 5.Nf3 (5.b5 Bb7+=) 5...ab4= 6.Be5 Qc6 7.Bd3 d6 (7...ba3 8.Na3 Qg6 9.Bc7+/-) 8.Bd4 Nf6 (8...Ba6 9.ab4 Bd3 10.cd3 Ra1 11.Ba1+/-) 9.a4 (9...Qb7 10.Bf6 gf6 11.0-0=; better is 9.ab4 Ra1 10.Ba1+/-) 1–0. Gregor123 – coba@, mySchach.de, 2004.

4.e4 Bb7 5.Nc3+=.

4.b5 c4 5.e4 Bc5 6.Qf3 +=.

4.b5 c4 5.Nf3 Bc5? 6.Be5+/- Qf5?? (better is 6...Qg6+/-) 7.Bg7+- (7...Bf8 8.Bh8 Qb5 9.e4+-) 1–0. Wall,Bill – DnD, internet, 2003.

4.b5 c4 5.Nf3 d6!? +=.

4.b5 c4 5.Nf3 Nh6 6.Ne5+- Bc5 7.e3 d6 8.Nc4 Qf5 9.Bg7 Ng4 10.f3 Qg5 11.Bh8 d5 12.h4 Qg8 13.Bb2 dc4 14.fg4 Bg4 15.Be2 h5 16.Bg4 hg4 17.Qe2 f5 18.h5 Nd7 19.h6 Nf8 20.d4 Bd6 21.Nd2 Nh7 22.Nc4 Bg3 23.Kd2 Qg5 24.Ne5 Rd8 25.Qc4 Be5 26.Qe6 Qe7 27.Qf5 g3 28.Ke2 Bd4 29.Bd4 Rd4 30.Qg6 Kd8 31.Rad1 Nf8 32.Rd4 Kc8 33.Qf5 Kc7 34.h7 Ne6 35.Rc4 Kb6 36.h8Q Ng7 37.Qg6 Ka5 38.Qhg7 Qa3 39.Qc7 Kb5 40.Rh5 Qc5 41.Rhc5 (41.Qc5) 1–0. sdavo – TinCup69, internet, 2007.

4.b5 d5!?=+.

4.c3 c4 5.Nf3 d5 6.d4 e4–/+ 7.Ne5 Nc6 8.e3 Ne5–+ 9.de5 Qe5 10.Qd4 Qd4 11.cd4 Bd6 12.Be2 Be6 13.Nd2? b5 14.Nf1? Ne7 15.Ng3 0-0 16.0-0 a5 17.f3 Bg3 18.hg3 ef3 19.gf3 ab4 20.ab4 Ra1 21.Ba1 Ra8–+ 22.Bc3 Ra3 23.Rc1 Nc6 24.f4 Bf5 25.Kf2 Be4 26.Bb2 Rb3 27.Bc3 Nb4 28.Bf3 Nd3 29.Ke2 Nc1 30.Kd2 Bf3 (31.Kc2 Ne2–+) 0–1. aji – SPEEDCHESS, VOGChess (year?).

4.c3 d5 5.d4 =.

4.c3 d5 5.e3 Nh6 6.Qf3 Qe6 7.Ne2 e4 8.Qg3 Nf5–/+ 9.Qc7 Nc6 10.Nf4= Qd7 11.Qd7+= Kd7 12.Nd5+/- cb4 13.cb4 Nce7 14.Bc4 Nd5 15.Bd5+- Nd6 16.Nc3 f5 17.Rd1 Be7 18.d3 ed3 19.Rd3 Rd8 20.0-0 g6 21.e4 fe4 22.Ne4 Ne4 23.Be4 Ke8 24.Rd8 Kd8 25.Rd1 Ke8 26.f3 a5 27.b5 a4 28.Re1 Kf8 29.Bd5 Ra5 30.Bc4 Bc5+/- 31.Kf1 b6 32.Bc3 Ra7+/- 33.Bb2 Re7 34.Re7 Ke7 35.Bc1 Bf5 36.Ke2 Bg1 37.h3 h5 38.Be3+- Be3 39.Ke3 Kd6 40.Kd4 Bc2? 41.f4 h4 42.Bf7 Ke7 43.Bd5 Kd6 44.Be4+- Be4 45.Ke4 Kc5 46.Ke5 Kb5 47.Kf6+- Kc4 48.Kg6 b5 49.f5 b4 50.f6?? b3 51.f7+/- b2 52.f8Q b1Q 53.Kh5 Qh7? 54.Kg4?? Qe4= 55.Kh5 Qe1 56.Qf4 Kb3= 57.Qh4 Qe8 58.Kg4 Qe4 59.Kg3 Qe1 60.Kg4 Qe4 61.Kg3 (61...Qe1 62.Kg4 Qe4=). babai – RAM1962, internet, 2007.

4.c3 Nh6 5.d3 Ng4 6.Nf3= Nc6 7.e3 d5= 8.h3 Nh6 9.Be2 cb4 10.cb4 e4?? 11.Bf6+- gf6 12.de4 de4 13.Nd4 Ne5 14.Qa4 Bd7 15.Bb5 Rg8 16.Bd7 Nd7 17.0-0 Rb8 18.Qa7 Rg5 19.Nc3 Rc5 20.bc5 Bc5 21.Qa4 b5 22.Ndb5 Nb6 23.Qe4 Kf8 24.Qh7 Ng8 25.Ne4 Nc4 26.Nc5 Ne7 27.Nd7 Ke8 28.Nb8 Nd5 29.Qg8 Ke7 30.Rfd1 Ndb6 31.Qd8 Ke6 32.g4 (32...Nd5 33.Qd7 Ke5 34.Qd5#) 1–0. babai – gatort, internet, 2007.

4.Nc3 Qe6 =.

4.e3 cb4 5.f4 d6 (5...Nc6 6.Nf3=) 6.Nf3 (6.ab4 Qe6=) 6...Bg4 7.ab4+= g6? (better is 7...Nc6!?+=) 8.h3 Bf3 9.Qf3 (9...Nc6 10.b5+-; 9.gf3?! Qh4 10.Ke2 Bg7=) 1–0. Jacewicz,Grzegorz – Lowry,Paul, corr or01–010, 2001.

4.Nf3 cb4 5.Be5 Qb6 6.e3 f6 (6...Nc6!?+=) 7.Bd4+- Qa5 (7...Bc5+-) 8.a4 (better 8.ab4 Qb4 9.Nc3+-) 8...Nc6 9.Bc4 (9.Bb5 a6 10.Be2 d5+=) 9...d5 10.Bb3 Nd4 (10...Bd6!?=) 11.Nd4+= Ne7 12.0-0 Bd7 Attacks the isolani on a4 13.c3 b5? (13...Nc6!?+-) 14.Qh5 (better 14.cb4!? Qa6 15.Bd5+-) 14...g6+- 15.Qh4 Bg7 16.Re1 (16.Bd5 Rb8 17.Qg3 Rd8+-) 16...ba4 17.cb4 Qb4 18.Bc2 (better 18.Bd5 Rb8 19.Nc3 Nd5 20.Reb1+=) 18...0-0-0? (better 18...f5=) 19.Rc1+- g5 20.Qg3 (20.Bh7 Kb7 21.Qg3 f5+-) 20...h6?? (20...Qb8 21.Ba4 Kb7 22.f4+-) 21.Ra4 Qb2 Threatening mate... how? (21...Qa4 22.Ba4 Discovered attack) 22.Rf1?? (better 22.Ne2 Kb7 23.Ra5+-) 22...Ba4=+ 23.Ba4 h5? (better 23...f5 24.Nc3 Bd4 (24...Qd2?? 25.Rb1 Qe1 26.Re1+-) 25.ed4 A) 25...Qd2? 26.Nb5 Qa5 27.Rc1 Kb7 28.Rc7 Ka8 29.Ra7 (29.Re7?! Qa4 30.Ra7 Qa7 31.Na7 Ka7+=) 29...Qa7 30.Na7+-; B) 25...Qb8+=) 24.Ne6+- Threatening mate: Qc7 24...Qe5 25.Rc1 (25.Ng7 Qg3 26.fg3 Rh6+-) 25...Kb8+- 26.Nd8 (26.Ng7 Qg3 27.fg3 Rd6+-) 26...Rd8? (26...Qg3 27.hg3 Rd8 28.d4=) 27.d4 (better 27.Qf3+-) 27...Qg3= 28.fg3 (28.hg3 f5=) 28...Nf5 29.Kf2 Rd6 (29...g4 30.Nc3 Bh6 31.Re1=) 30.Nc3 (30.Rc5 Ne7+=) 30...h4 (30...a6!?+=) 31.Rb1 Kc8 32.Nb5 (32.gh4!? gh4 33.Rb5+-) 32...Ra6 33.Rc1 (33.Bb3 hg3 34.hg3 Ne7 35.Rc1 Kd8+=) 33...Kd8 34.Bb3 Rb6 (34...hg3 35.hg3 Ne7=) 35.Ba4 (better 35.Rc5!? hg3 36.hg3+=) 35...a6 36.Na7 Rb2 37.Kf3 Nd6 (37...hg3!? 38.hg3 Ke7=) 38.Bc6 (38.gh4!? Ra2 39.Bb3+-) 38...f5 39.Bd5 Bh6 (39...g4 40.Kf4 Kd7 41.Bc6 Ke6 42.Kg5 hg3 43.hg3 Bf6 44.Kg6=) 40.gh4 (40.g4!? h3 41.gh3 Rh2 42.Rc6+-) 40...g4 41.Kg3 Be3 42.h3?? (42.Rc6!? Kd7 43.Ra6+=) 42...gh3 (42...Bc1 43.hg4 Ne4 44.Be4 fe4 45.Nc6 Kd7 46.Ne5 Ke6 47.h5–+) 43.Kh3?? (better 43.Rc6 Nb5 44.Ra6 hg2 45.Nc6 Ke8 46.Bg2 Nd4 47.Ra8 Kf7 48.Bd5 Kg6 49.Rg8 Kh6 50.Nd4 Bd4 51.Kf4=) 43...Bc1–+ 44.h5 (44.Nc6 Kc7–+) 44...Bh6 (44...Kc7 45.Nc6–+) 45.g3 (45.Nc6 Ke8–+) 45...f4 (better 45...Ne4 46.Nc6 Ke8 47.Be4 fe4 48.Kg4–+) 46.gf4 Bf4 47.Nc6 Kd7 48.Ne5 (48.Bf3 Rb1 49.Kg4 Bd2–+) 48...Be5 49.de5 Nf5 50.Kg4 (50.Be4 Ke6 51.Bc6–+) 50…Ne3 (50...Ne3 51.Kg3 Nd5–+) 0–1. pieeater – kirklandlake (1640), ChessWorld.net, 2011.

4.Nf3 cb4 5.Be5+/- Qf5 6.Bb8 Rb8 7.ab4 g5 (better is 7...Bb4!? 8.c3 Bc5+=) 8.Ra7+- Bb4 9.e3 g4 10.Nd4 Qc5 (10...Qh5 11.Ra4 Be7 12.Nc3+-) 11.Ra1 (better is 11.Nb5 Qh5 12.Ra4+-) 11...Nf6?? (better is 11...Qh5+-) 12.c3 Ba5 (12...0-0 13.h3 Bc3 14.Nc3+-) 13.Nb3 Qf5 (13...Qe7 14.Na5 b6 15.Qb3+-) 14.Ra5 (14...Qg6 15.Nd4+-) 1–0. Wall,Bill – Anokamo, internet, 2001.

4.Nf3 Nc6 5.b5 Nd4 6.Nd4 cd4 7.e3 Bc5 8.c3 (8.ed4 Bd4 9.Bd4 ed4+=) 8...d6 9.Bc4 (9.cd4 ed4 10.Bd3 Ne7=) 9...Nh6 (9...de3 10.de3 Qg6+=) 10.h3 (10.cd4 ed4 11.Bd5 Ng4+=) 10...dc3 (better is 10...de3!? 11.de3 Be3–/+) 11.Nc3= (worse is 11.dc3 Be3 12.0-0 Bc5–/+) 11...0-0 12.Ne4 Qg6 13.Ng3 (13.Bd5 Bb6=) 13...Nf5 (13...Be6!? 14.Be2 Rfc8=) 14.Bd3+= Qg5 15.Bf5 (15.Qg4!? Qg4 16.hg4 Ng3 17.Bh7 Kh8 18.fg3+=) 15...Bf5= 16.0-0 (16.h4 Qg6 17.h5 Qg5=) 16...e4 (16...Bd3!? 17.Re1 Rfc8–/+) 17.Qh5 (17.Nf5 Qf5 18.f3 a6=) 17...Qh5+= 18.Nh5 Rfe8?? (better is 18...f6+=) 19.Ng7+- (worse is 19.Bg7 Bg6 20.Nf6 Kg7 21.Ne8 Re8–/+) 19...Red8?? (19...Bd7 20.Ne8 Re8+-) 20.Nf5 d5 21.Rad1 a6 22.ba6 Ra6 23.d3 Ba3 24.Ba3 Ra3 25.de4 Ra5 26.ed5 Kf8 27.e4 b5 28.Nd4 b4 29.Nc6 (29.Nc6 Raa8 30.Nd8 Rd8 31.Rd3+-) 1–0. Vila Vila,Ricard (1815) – Garces Fisas,Gerard (1700), Moia ESP, 1st Open, 2013.

4.Nf3 Bd6? 5.e3 (5.bc5!? Bc7 6.Nc3 Nc6+-) 5...cb4 6.ab4 Bb4? (better is 6...Nc6!? 7.Nc3 Bb4+-) 7.Be5+- Qe6?? (7...Qh6 8.Nc3 Bc3 9.Bc3 d6+-) 8.Bg7 Bf8 (8...Nc6 9.Bh8 Nf6 10.Na3+-) 9.Bh8 f6 (9...Nf6 10.Nc3 Be7 11.Nd4+-) 10.Na3 (10.Nd4 Qf7 11.Be2 Ne7+-) 10...Nh6 (10...Nc6 11.Nb5 Kd8 12.Nfd4 Nd4 13.Nd4+-) 11.Bc4 (better is 11.Nb5!? Kd8 12.Nfd4 Qe5+-) 11...d5 12.Bb5 (12.Nd4!? Qg8 13.Qh5 Ke7 14.Bd5 Qh8+-) 12...Nc6 (12...Ke7 13.Nd4 Qg4 14.Qb1 Qg2 15.Rf1+-) 13.Nd4 Qd6 14.Qh5 Kd8 15.f3 (better is 15.Bc6 bc6 16.Qh4+-) 15...Qe7 (15...Nd4 16.ed4 Kc7+-) 16.Qd5 Bd7 17.Bc6 Kc7 18.Nab5 Kc8 19.Bb7 Kd8 20.Ba8 Nf7 21.Ra7 Nh8 22.Nc6 Ke8 1–0. Willi_weizenkeim – Bob_O, playchess.de, 2002.

4.Nf3 h6? 5.Be5+- Qc6 (5...Qd8 6.bc5 Nc6 7.Bd6+-) 6.e3 d6 7.b5 (7.Nc3 a6 (7...de5?? 8.Bb5+-) 8.b5 Qd7+-) 7...Qd7 (7...Qc7 8.Bf4+/-) 8.Bb2 (8.Bf4 Nf6+-) 8...b6 (8...Qc7 9.c4+-) 9.c4 f6 (9...Bb7+-) 10.Bd3 Be7 (10...Ne7 11.Nc3+-) 11.Bg6 Kd8 12.Be4 Bb7 13.Bb7 (better is 13.Qc2!? a6 14.Bf5 Qe8+-) 13...Qb7 14.Nc3 f5 15.Nd5 (15.Qc2 Bf6 16.Qf5 Nd7+-) 15...Bf6 16.d4 Ne7 (16...Nd7+-) 17.Nf6 gf6 18.dc5 Ke8 19.cd6 (19.Bf6!? Rh7 20.Be7 Re7 21.Qd6 bc5 22.Qh6 Nd7+-) 19...Ng6 20.Bf6 Rh7 (20...Rg8 21.c5! bc5 22.0-0+-) 21.Qd3 (better is 21.0-0 Nd7 22.Bd4 Kf7+-) 21...Nd7 (21...Qe4 22.Qd2 Nd7+-) 22.Qf5 Rf7 (22...Ngf8 23.Qh5 Rf7+-) 23.Qg6 Nf6 24.Ne5 Rd8 25.Rd1 Qe4 26.Qf7# 1–0. onny555 – flocon, gameknot.com, 2009.

5.e3 d6 6.Nf3 h6 7.Nc3+/- Be6 (7...Nc6 8.Bb5 Nge7 9.Ne4+/-) 8.Ne4 (8.Bb5 Nd7 9.0-0 0-0-0+-) 8...Qd8 (8...Qe7 9.Nc5 dc5 10.Ne5+- (worse 10.Be5 Nf6+/-)) 9.d4 (9.Ne5 de5 10.Nc5 Qe7+-) 9...ed4 10.Nd4 (10.ed4 Bb6 11.Bb5 Kf8+-) 10...Bd4 (10...Nf6 11.Ne6 fe6 12.Bf6 gf6+/-) 11.Qd4 (11.ed4?! Nf6 12.Bd3 Ne4 13.Be4 d5+=; 11.Bd4?! d5 12.Nc5 Nf6+/-) 11...d5? (11...Nf6 12.Nd6 Kf8 13.Nb7 Qd4 14.ed4 Nbd7+-) 12.Bb5 (12.Qg7 de4 13.Qh8 Qg5+-) 12...Nc6 13.Qg7 (13.Qg7 de4 14.Qh8+-) 1-0. Adlai – Morua, internet, 2021.

5.Nf3 Qb6–+ 6.Qc1 Bf2 7.Kd1 d6 8.e3 Nf6 9.Nc3 (9.Ke2 e4 10.Kf2 ef3 11.gf3=) 9...Bf5 (9...e4 10.Bb5 Bd7 11.Nd4 Bb5 12.Ncb5–/+) 10.Rb1 (10.Ke2 Ng4 11.h3 Ne3 12.de3 Be3 13.Qe3 Qb2+=) 10...0-0 (10...Ng4 11.Bb5 Bd7 12.Bd7 Nd7 13.h3 Ne3 14.de3 Be3 15.Nd5 Bc1 16.Nb6 Nb6 17.Bc1=) 11.Bc4?? (better is 11.Ke2 Be3 12.de3+=) 11...Rc8 (better is 11...Qc5 12.Bb3 e4–/+) 12.d3? (better is 12.Be2+=) 12...Be3–+ 13.Nd2? (13.Na4 Qc6 14.Qe3 Qa4 15.Bb3–+) 13...Qc6 14.Bd5 (14.Re1 Bg4 15.Ne2 Qg2 16.h3 Rc4 17.dc4–+) 14...Nd5 15.Nd5 Qd5 (15...Qd5 16.Ke2 Bd2 17.Qd2 Rc2 18.Qc2 Qg2 19.Kd1 Qh1 20.Kd2 Qh2 21.Kc3 Qf4–+) 0–1. Fournier,Frederic – JSBach (1785), ICC, 2005.

5.Nf3 Qb6 6.Qc1 Bf2 7.Kd1 e4?? (7...d6 8.e3 Bg4 9.Be2–/+) 8.Ng5?? (8.Bg7!? ef3 9.Bh8 fg2 10.Bg2 Bd4 11.Bd4 Qd4+-) 8...e3?? (better is 8...Nf6–+) 9.Bg7+/- f6?? 10.Bh8 fg5+/- 11.Nc3 Qd6 12.g3?? Nc6 13.Bg2+- Na5 14.d3 Rb8 15.Rf1 b6 16.Ne4 Qf8 17.Nf2 ef2 18.Qe3 Ne7 19.Rf2 Qh8= 20.Rb1 Bb7 21.Bb7+/- Nb7 22.Qg5 Nc5?? 23.Qf4 Na4?? 24.Qf7 Kd8+= 25.Rb3 b5? 26.Kd2 Nc6? 27.Qf6 Qf6 28.Rf6 Kc7 29.Rf7 Nd4? 30.Rb4+- Nc6 31.Rbf4 a5 32.Rh7 b4 33.ab4 ab4 34.Rff7 Ne5 35.Rf5 Nc6 36.Rhh5 Rc8 37.g4 Kb7 38.Rb5 Ka6 39.Rbd5 Nb6 40.Rd6 Rg8 41.h3 Rf8 42.Rf5 Rh8 43.Rh5 Rf8 44.g5 Rf5 45.h4 Ne7 46.Rh7 Re5 47.g6 Kb7 48.Rh6 Kc7 49.g7 Nbc8 50.Rb6 Nb6–/+ 51.Rg6 Rh5 52.g8Q Ng8 53.Rg8 Rh4 54.Rg1 Kc6 55.Rb1 Kc5 56.c3 bc3 57.Kc3 Nd5 58.Kd2 Rb4 59.Rc1 Kb5 60.Rc2 Nf4 61.Ke3 d5 62.Kf3 Ne6 63.e3 d4?? 64.e4?? Rb3–+ 65.Rd2 Nc5 66.Ke2 Kc6 67.Rc2 Kd6 0–1. Fournier,Frederic (2010) – Baltasor (1900), Echecs21, 2003.

5.Nf3 e4?? 6.Bf6 gf6 7.d4 Bb6 8.Nfd2 Bd4 (8...d5 9.e3+-) 9.c3 Bc5 (9...Be5 10.Ne4 Nc6 11.e3+-) 10.Ne4 Bb6 (10...Be7+-) 11.Nd6 Kd8 12.Nf7 Ke8 13.Nh8 f5 14.Qd5 Ne7 15.Qf7 Kd8 16.Qf8 Kc7 17.Qe7 Nc6 18.Qh7 Ne5 19.Nf7 f4 20.Ne5 Bc5 21.Nd2 a5 22.Ne4 Bb6 23.Qh6 a4 24.Qd6 Kd8 25.Nf6 Bc7 (25...Bf2 26.Kf2 b5 27.Nc6) 26.Nf7 1-0. Pereira – Gatteres, internet, 2021.

5.Nf3 e4?? 6.Bf6+- Nf6 7.Ng5 (7.d4!? Be7 8.Nfd2 d5+-) 7...h6 8.Nh3 1–0. Fournier,Frederic (1915) – esli, Active, 2011.

4.b5 Nce7 =.

4.Nc3 d6 5.e3 Be6 6.Nf3 Nh6 (6...d5 7.b5 Na5 8.d3=) 7.Bd3 (better is 7.d4 ed4 8.Nb5+=) 7...Be7?? (7...0-0-0 8.Ne4 Qe7 9.Neg5=) 8.Be4 (better is 8.Ne4 Qg6 9.Nd6 cd6 10.Bg6 hg6 11.d4+-) 8...d5? (better is 8...0-0+=) 9.Bd3?? (better is 9.Nd5 Bd5 10.Bd5+-) 9...Ng4 (9...e4 10.Nd5 Qb2 11.Rb1–/+) 10.Na4 (better is 10.h3 Nh6 11.e4+=) 10...e4?? (10...a6 11.Nc5+=) 11.Ba6?? ba6?? 12.Nb6?? Qb2–+ 13.Ne5 Qe5 14.Na4 Qf6 15.Rf1 Nh2 16.Nc5 Nf1 17.Na6 Nh2 18.b5 Nd8 19.Rb1 Ng4 20.f4 0-0 21.f5 Bf5 22.Nb4 Be6 23.Qg4–+ Bg4 24.d3 Bb4 (24...Bb4 25.Rb4 Qc3 26.Kf1 Qa3–+; 24...d4 25.Kd2 de3 26.Ke3 Qg5 27.Kf2 Bc5 28.d4 Bd4 29.Kg3 Be6 30.Kh2 Qh4#) 0–1. pierredoua – onkel siggi, Rated game, 7m + 2s, 2003.

4.c4 Nd4 5.e3+= Bd6?? (better is 5...Nf5+=) 6.c5 (better is 6.ed4 ed4 7.Nf3 c5+-) 6...Nb3?! (6...Bc5 7.bc5 Nc6+-) 7.Qb3 (7.cd6?! Na1 8.dc7 Qc6 9.Ba1 Qc7+-) 7...Qf5 (7...Be7+-) 8.cd6 cd6 9.Nc3 h5 (9...Nf6 10.Nb5 Ke7 11.d4+-) 10.Nb5 Kd8 (10...Ke7+-) 11.Nd6 Rh6 12.Nf5 d5 13.Qd5 Ke8 14.Bb5 Rc6 15.Bc6 bc6 16.Qc6 Bd7 (16...Kd8 17.Ng7 Bd7 18.Qa8 Ke7 19.Qg8 f6 20.Nh5 Be6 21.Qg7 Kd6 22.Rc1 Bg8 23.Qc7 Ke6 24.Ng7 Kd5 25.Qc6) 17.Qa8 (17.Qa8 Bc8 18.Qc8#) 1–0. Schellen,Anton – Hansell,Tim, FICGS, 2006.

4.c4 d6 5.e3 =.

4.d3 Nh6 5.h3 a5 (5...d5!?=) 6.b5+= Nd4 7.a4 (7.e3 Nb5 8.Nf3 Qa6+=) 7...Bc5 (7...d5!?+=) 8.e3= Ndf5 9.Nf3 d6 10.Nc3 Be6 (better is 10...Bb4!? 11.Nd2 0-0=) 11.Ne4+/- Qe7 12.Nc5 dc5 13.Ne5 0-0 14.Be2 Nh4 15.g3 Ng6 16.f4 Ne5 17.Be5 (17.fe5 Nf5 18.Bf3 f6+/-) 17...f6 18.Bb2 c4? (better is 18...Nf5 19.Kf2 Rad8+/-) 19.dc4?? (better is 19.Ba3 Qf7 20.Bf8 Qf8 21.Bf3+-) 19...Qb4–+ 20.Qd2 Qb2 21.0-0 Rad8 22.Bd3 Qb4 23.Qb4 ab4 24.Rab1 Bh3 25.Rfd1 Ng4 26.Re1 Rfe8 27.e4 Nh6 28.Rb4 Rd4 29.Rd1 Bg4 30.Rd2 Bf3 31.e5? fe5 32.fe5 0–1. Portilla Chavez,LF (1645) – Mego Ponce,EW, Tingo Maria PER, 5th UNAS Open, 2012.

4.e3 d6 5.g3 Nh6 6.Bg2 Bd7 7.Ne2 Ng4 8.0-0 Qh6 9.h3 Nf6 10.d3? Bh3–/+ 11.Nd2 Bd7 12.c4 Ng4 13.Qc2?? Qh2# 0–1. baudrey – lizus, Live Game Caissa's Web, 2004.

4.e4 d6 5.Nf3 Bg4 6.Be2 Qg6 7.0-0 (7.b5 Nce7+=) 7...Qe4 (7...Bh3 8.Nh4 Qg5 9.g3 Bf1 10.Qf1=) 8.d3 (8.b5 Nce7 9.d4 Nf6+/-) 8...Qf5 9.Nbd2 (9.b5 Nce7+=) 9...Be7 (9...Nf6 10.Re1=) 10.Ne4 (10.b5 Nd8 11.h3 Bf3 12.Bf3 Nf6+=) 10...Bf3 (10...a6 11.h3 Bf3 12.Bf3= (12.gf3? Qh3 13.f4 f5–+)) 11.Bf3+= (worse is 11.gf3 Nf6–/+) 11...Bh4? (11...Nf6 12.b5 Nd8 13.Re1+=) 12.c3 (12.Re1!? Nh6 13.b5+/-) 12...d5 13.Nc5 e4?? (better is 13...Nf6+/-) 14.de4+- Qf4 (14...Qf6 15.g3 (15.Qd5?! Rd8 16.Qb3 Ne5+-) 15...Ne5 16.Bg2+- (16.gh4 Nf3 17.Kg2 Nh4 18.Kh1 b6–/+)) 15.ed5 (better is 15.g3 Qf6 16.ed5 0-0-0 17.gh4 Ne5+-) 15...Rd8 (15...Ne5 16.Be4 Be7 17.g3+-) 16.c4 (better is 16.g3 Qf5 17.gh4 Ne5+-) 16...f6 (16...Bf6 17.Re1 Nce7 18.Bf6 Nf6 19.Nb7 Rd7+-) 17.Ne6 Qd6 18.Ng7 Kf8 19.Ne6 (better is 19.c5 Qe7 20.Nf5 Qe8 21.Nh4 Qf7+-) 19...Ke7 (19...Qe6 20.de6 Rd1 21.Rad1+-) 20.Nd8 Kd8 21.Re1 (better is 21.c5 Qf8 22.dc6 Kc8+-) 21...Nce7 (21...Ne5 22.Re4 Bg5 23.Be2+-) 22.c5 Qf4 (22...Qd7+-) 23.g3 Qg5 24.d6 cd6 25.Qd6 Ke8 26.Rad1 (better is 26.Bd5! Qd5 27.Qd5 Bg5+-) 26...Kf7 27.Qd7 h6 28.Bd5 Kg7 29.Re6 Qg4 30.Bb3 Bg5 31.Re7 Ne7 32.Qe7 Kg6 33.Bc2 f5 34.Rd6 Kh5 35.Qf7# 1–0. pieeater – kiwi phill, ChessWorld.net, 2012.

4.Nf3 d6 5.e3 Bg4 6.Be2 0-0-0 7.c4 Nh6 8.b5 Ne7 9.Qa4 Kb8 10.Nc3 d5 (better is 10...Qg6!?=) 11.cd5+/- Nd5 12.Ne4 Qe7 13.Be5?? (better is 13.Ne5 Be2 14.Ke2+=) 13...Bf3–+ 14.Bc7 Nc7 15.Bf3 Qd7 16.Rb1? (better is 16.0-0 Qb5 17.Qd1–/+) 16...f5–+ 17.Ng5 (17.0-0 fe4 18.Be4–+) 17...Qd2 18.Kf1 Qa2 19.Re1? Ba3 20.g3 Rd2 21.Nh3 Rhd8 22.Kg2 Qb2 23.Rb1= Qa2 24.Ra1 Qb2? 25.Ra3+- Rd1?? 26.Qa7 Kc8 27.Qb7 Kd7 28.Rd1 Ke8 29.Rd8 Kd8 30.Rd3 Ke8 31.Qc7 Qf6 32.Ra3 Nf7 33.Ra8 Nd8 34.b6 g5 35.Bc6 Kf8 36.Rd8 (36.Rd8 Qd8 37.Qd8 Kg7 38.Qe7 Kg8 39.Bd5 Kh8 40.Qe5; 36.Bd5 Qe7 37.Rd8 Kg7 38.Qe7 Kg6 39.Qg5) 1–0. Fournier,Frederic (1750) – Endor, Active, 2009.

4.d4 =.

4.e3 c5 5.b5 Nh6 6.d4 (better 6.f4=) 6...c4?? (better 6...ed4 7.ed4 Nf5=+) 7.de5+/- Qe6 (better 7...Qd8!?+/-) 8.Nc3+- Qe5 9.Nf3 Qf5?? (9...Qf6+-) 10.Nd5 (10.Qd5?! Qc2 11.Rd1 Nd7+-) 10...Be6 (10...Qd7 11.Be5 f6 12.Nc7 Ke7 13.Bf4+-) 11.Nc7 (11.Nc7 Ke7 12.a4+-) 1-0. Pereira – Ciufe, internet, 2021.

4.e3 c5 5.Nf3 cb4 6.Be5+/- Qg6 (6...Qh6 7.Bb8 Rb8 8.ab4 Bb4 9.Ra7+/-) 7.ab4 Nc6 8.Nc3 (8.c3 Bf5+/-) 8...Ne5 (8...Nb4!? 9.Nd4 Bc5 10.Bb5 Bd7+=) 9.Ne5+- Qf6 (9...Qe6 10.Bb5 Kd8 11.Qh5+-) 10.Bb5 (better 10.f4 Qe6 11.e4+-) 10...Ke7?? (better 10...Kd8 11.f4 Be6+-) 11.Nd5 Ke6 12.Nf6 Nf6 13.Nc4 (13.f4 Bd6 14.Bc4 Ke7 15.Nf7 Bg4+-) 13...Bb4 14.c3 Bd6 15.Qb3 Ke7 16.Nd6 Kd6 17.Qf7 Ne4 18.Ra4 Be6 (18...Bf5 19.Rd4 Kc5 20.Qb7 Nf2 21.Rd5) 19.Rd4 Bd5 (19...Kc5 20.Qc7 Kb5 21.Rb4 Ka6 22.Qb7 Ka5 23.Qb5) 20.Rd5 1-0. Adlai – Byadab, internet, 2021.

4.e3 Nc6 5.b5 Na5 (5...Nce7 6.f4 (6.Nf3 Ng6 7.d4 e4 8.Nfd2 Nh4 9.Qh5 Be6 10.c4=) 6...Ng6 7.Nf3= Bd6 8.c4 N8e7 9.cd5 Nd5 10.Bd3=) 6.f4+= d4 7.Nf3 de3 (7...ef4 8.Bd4 Qe7 9.Bc3+= (9.Bd3 fe3 10.0-0+=) 9...b6 10.Bb4+=; 7...Qb6 8.Ne5 de3 9.Qf3 ed2 10.Nd2+=) 8.Be5+- Qb6 (8...Qe7 9.Qe2 f6 10.Bc3+-) 9.Bd4 (better 9.Nc3 Nf6 (9...Qc5 10.de3+-) 10.Be2+- (10.de3 Qe3 11.Qe2 Qe2 12.Be2+-)) 9...Bc5?? (better 9...ed2 10.Qd2 Qe6 11.Kf2 c5+-) 10.Bg7+- ed2 (10...Bg4 11.Bh8 0-0-0 12.d4+-) 11.Qd2 (11.Kd2 Be3 12.Ke2 Be6+-; 11.Nfd2?? Bf2 12.Ke2 Qe3; 11.Nbd2?? Bf2 12.Ke2 Qe3) 11...Qe6 (11...Bd7 12.Qe2 Ne7 13.Bh8+-) 12.Qe2 Bf2 (12...Nc4 13.Bh8 Ne3+-) 13.Kf2 1–0. pierred – lilbiggums, internet, 2008.

4.e3 Nc6 5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 Qd6 8.d3 Be7 9.Nd2 Bf6 10.c4 e4 11.de4?? (better is 11.Bf6 Qf6 12.de4 dc4 13.Nc4 Qc3 14.Nd2+/-) 11...Bb2–+ 12.Rb1 Ba3 (better is 12...de4!? 13.Be4 Ba3–+) 13.ed5 Ne5 (13...Nb4 14.Qa4 b5 15.cb5 Nd3 16.Ke2=) 14.c5?? (better is 14.Qa4 b5 15.Qa3 bc4 16.Qa4 Qd7 17.Qa1+=) 14...Nf3 15.Nf3 Qg6 (better is 15...Qa6 16.Qb3 b6+=) 16.0-0+/- Nf6 17.Qb3 Bb4 18.Qb4+- Rb8 19.d6 cd6+/- 20.cd6 0-0 21.Rfd1 Qh5 22.Qd4 Ng4? 23.h3 Nf6 24.Qa7 Nd7 25.Rb7 Ra8 26.Qd4 Qf5 27.Qd5 Qe6 28.Qe6 fe6 29.Rd7 e5 30.Ne5 Rf5 31.f4 1–0. Fournier,Frederic – kalamar, Active, 2007.

4.e3 Nc6 5.f4 A) 5...a6= 6.Nf3 (6.b5 ab5 7.Bb5 Qg6 8.Be5 Qg2 9.Qf3 Bh3 10.Bc7=) 6...Bg4 7.b5 ab5 8.Bb5 Bf3 9.Qf3 e4 10.Bf6+=; B) 5...Bd6 6.Nf3 Bg4 7.Bb5 Qe6 8.c4 dc4 9.Bc6 bc6 10.fe5+-; C) 5...d4 6.b5 ef4 7.Qf3 Ne5 8.Qf4 Qf4 9.ef4 Ng6 10.Bd4=.

4.e3 d4 5.ed4+= e4 (5...ed4 6.Qe2 Ne7 7.Qc4+=) 6.Bc4 (6.Nc3!? Qe7 7.d5+/-) 6...Qg6+= 7.g3 Bg4 8.Ne2 h5 (8...Nd7 9.Nf4 Qf5 10.Be2 Be2 11.Qe2+= (11.Ke2? g5–+)) 9.Nbc3 c6 10.0-0 Nf6 11.d3 ed3 (11...b5 12.Bb3 h4 13.Ne4 Ne4 14.de4=) 12.cd3 (12.Bd3!? Bf5+-) 12...Qf5 (12...h4 13.f3 hg3 A) worse is 14.fg4 Qh6 (14...gh2 15.Kh1+/-) 15.Rf3 Qh2 16.Kf1 g2 17.Ke1 g1Q 18.Ng1 Qg1 (18...Qb2?! 19.Nce2 Bb4 20.ab4 Qb4 21.Qd2 Qd2 22.Kd2+=) 19.Kd2 Qg4–/+ (worse is 19...Qd4 20.Qg1 Qg4 21.Qg4 Ng4 22.Re1 Kd8 23.Rf7=); B) worse is 14.hg3 Qh5 15.Kf2 Bf3–/+; C) 14.Ng3=) 13.b5 (13.f3 Bh3 (13...Bf3? 14.Qe1+-) 14.Re1 Kd8 15.Bf7 h4+/-) 13...Qf3 14.Nf4 White prepares the advance d5 14...a6 (14...Qd1 15.Nd1 cb5 16.Re1 Be7 17.Bb5 Kd8 18.Bc4+/-) 15.bc6 Qc6? (15...Qd1 16.Nd1 Nc6 17.d5+/-) 16.Qe1 (16.Qb3 Kd8 17.Bf7 Bd6+-) 16...Kd8 (16...Be7 17.Ncd5 Nd5 18.Nd5+-) 17.Bf7 Bd6 18.d5 Qd7 19.Ne6 Kc8 (19...Be6 20.de6 Qe7 21.Ne4+-) 20.Bg6 (better is 20.Rc1!? Nc6 21.Ng5 Qe7 22.dc6 bc6+-) 20...Bh3 21.Rc1 b6 22.Nb5 Kb7 23.a4 ab5–+ 24.ab5 Qb5 25.Qc3 Nd5?? 26.Be4?? Rc8?? 27.Qc8 Ka7 28.Ra1 Na6+- 29.Nd4 Qb2 30.Nc6# 1–0. pieeater – monas, ChessWorld.net, 2012.

4.e3 Bd6 5.d4 (5.f4 Nd7 6.Nf3 Qe6 7.Nc3 c6 8.Be2 Qh6 9.0-0 ef4 10.e4=) 5...Nc6 (5...Nh6 6.c4 Ng4 7.Qf3 e4 8.Qf6 Nf6 9.Nc3 a5 10.ba5=) 6.b5 (6.Nc3 Nge7 7.Nb5 e4 8.Nd6 Qd6 9.Bc3 a6 10.h3=) 6...Nce7 7.c4 e4 8.Nc3 c6 9.Rb1 Nh6 10.h3=.

4.e3 Nd7 =.

4.e3 Be6 A) 5.Ne2 A1) 5...a5 6.b5 Nd7 7.Nf4 Nb6 8.Ne6 Qe6 9.d4 e4 10.Nd2=; A2) 5...c6 6.d4 (6.Nf4 Bf5 7.c4 d4 8.Ne2 c5 9.ed4 ed4 10.Ng3=) 6...Nd7 7.de5 Ne5 8.Bd4 Bg4 9.h3 Bf5 10.f4+=; A3) 5...Bd6 6.Nf4 Ne7 7.Ne6 Qe6 8.Nc3 a5 9.Nb5 0-0 10.Nd6=; B) 5.d4 Bd6 6.de5 Be5 7.Be5 Qe5 8.Nd2 a5 9.b5 Nd7 10.Ngf3=; C) 5.Bd3 a5 6.f4 Qh4 7.g3 Qd8 8.Be5 Nc6 9.b5 Ne5 10.fe5+=; D) 5.Be2 Nd7 (5...Bd6 6.f4 Qh4 7.g3 Qf6 8.Nf3 Nd7 9.Rf1 Qd8 10.fe5+-; 5...Be7 6.Bd3 Bd6 7.f4 Nd7 8.Nf3 Bg4 9.Be2 Nh6 10.0-0=) 6.f4 Qg6 7.Nf3 ef4 8.ef4 Qg2 9.Rg1 Qh3 10.Rg7=; E) 5.f4 Nd7 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 Qe6 9.Nc3 Ngf6 10.Nb5+=.

4.e3 g5 5.Qf3 Nc6 (better 5...Qe6!?=) 6.Qd5 (6.Qf6!? Nf6 7.b5 Nd8 8.Be5 Bg7+-) 6...Nge7+/- 7.Qf3 Bg7 8.Qf6 Bf6 9.c4 (9.b5 Nb8+/-) 9...Be6 (9...Bf5 10.h4 g4 11.f4+/-) 10.Nf3 (10.Nc3 Bf5+/-) 10...0-0-0 (10...g4 11.Ng1=) 11.d3 (11.b5 Na5 12.Ne5 Rhe8+/-) 11...h5 (11...g4 12.Nfd2 Bg7 13.Be2+=) 12.Be2 (12.b5!? Na5 13.Ne5+-) 12...g4 13.Nfd2 Rdg8 (13...Bf5 14.Ne4 Bg7 15.b5+/-) 14.Nc3 Rg5?? (better 14...Bg7+/-) 15.Nde4 (15.Nce4 Rg6 16.Nf6 Rf6+-) 15...Rf5 16.Nf6 Rf6 17.Ne4 Rg6 (17...Rf5 18.h3 gh3 19.Rh3+-) 18.b5 Na5 19.Be5 Rd8 (19...Rh7 20.h3 gh3 21.gh3+-) 20.Bf6 Rd7 (20...Re8 21.Bc3 b6 22.Nf6+-) 21.Bc3 b6 22.Nf6 Rd6 23.Ne4 (23.Nh5!? c5+-) 23...Rd7 24.Nd2 (24.Ba5 ba5 25.Nc5 Rd8+-) 24...f5 (24...Nb7 25.h3+-) 25.Ba5 ba5 26.Nb3 a4 27.Nc5 Rd6 28.Na4 c6 29.Nc3 Kc7 (29...cb5 30.Nb5 Rd7 31.d4+-) 30.bc6 (better 30.d4 Bf7+-) 30...Nc6 (30...Rc6 31.Nb5 Kb7+-) 31.Nb5 Kd7 32.Nd6 Kd6 33.Kd2 Na5 34.Kc3 h4 35.h3 (35.d4 Rg8 36.Rab1 Rc8 37.c5 Kc7+-) 35...g3 36.fg3 hg3 (36...Rg3 37.Bf3+-) 37.Bf3 Nc6 38.Bc6 Kc6 39.Raf1 a5 (39...Kc7 40.h4+-) 40.Rf4 (40.h4 Kc7+-) 40...Kc5 (40...Kd6 41.h4+-) 41.d4 Kb6 42.d5 Bd7 43.Kd4 Kb7 44.c5 Ka6 (44...Kc7 45.h4+-) 45.Rhf1 (better 45.h4 Rh6+-) 45...Rf6 (45...Kb7 46.Rb1 Kc7 47.d6 Kc8 48.e4+-) 46.R1f3 (46.e4 Rf8 47.ef5 Rd8+-) 46...Kb5 (46...Rg6 47.c6 Bc8 48.Kc5+-) 47.Ke5 (47.Rg3!? Rf8 48.e4 Rc8 49.ef5 Rc5 50.Rb3 Ka4 51.Kc5 Kb3+-) 47...Rf8 (47...Rg6 48.c6 Bc8 49.Rf1+-) 48.c6 Bc8 49.Rg3 (49.e4 Re8 50.Kd4 fe4 51.Re4 Re4 52.Ke4 Kb6+-) 49...Kb6 (49...Kc5 50.Rd4 f4 51.Rf4 Re8 52.Kf6 Kd5 53.Kf7+-) 50.Rg7 Kb5 51.Rg5 (51.Kd4 Re8+-) 51...a4 (51...Kc5 52.Rd4+-) 52.Rgf5 (better 52.Kd6 Rd8 53.Kc7 Rd5 54.g4+-) 52...Rf5 (52...Bf5 53.Rf5 Rg8+-) 53.Rf5 Kc4 54.d6 Bf5 55.Kf5 (55.Kf5 Kb3 56.d7 Kc2 57.c7 Kb2 58.d8Q Ka2 59.Qd2 Ka3 60.c8Q Kb3 61.Qcc3) 1-0. jaddwarrior – WarlpiriMan, ChessWorld.net, 2021.

4.e3 g6 5.c4 c6 6.Nf3 Bg4 7.Be2 Bf3= 8.Bf3 d4 9.0-0+/- Nd7 10.Re1 Bd6 11.ed4+- Ne7 12.d5 c5? 13.b5 Nf5 14.Bg4 0-0-0 15.Bf5 Qf5 16.d3 Rhe8 17.Nc3 b6 18.Ne4+- Bb8?? 19.a4 Nf6 20.a5 Ne4 21.de4 Qg5 22.ab6 Rd7 23.ba7 Ra7 24.Ra7 Ba7 25.Bc1 Qd8 26.Qa4 Qb6 27.Bd2 h5 28.Ra1 Re7 29.Ba5 Qb7 30.b6! Bb8 31.Qb5 Rd7 32.Qc5 Kd8 33.Qf8 1–0. phildo – arlocw, net–chess.com, 2003.

4.f3 d4 5.e3 Nc6 (5...Be6 6.f4 ef4 7.Nf3 fe3 8.de3=) 6.b5= Na5 7.ed4 (7.f4 ef4 8.Nf3 Bc5=) 7...ed4+= 8.Bd3 (8.Ne2 Bc5+=) 8...Bc5 (8...Be6 9.Qe2–/+) 9.Ne2 Ne7 (9...Be6 10.a4–/+) 10.0-0 (10.Ng3 Qb6=) 10...0-0 (10...Nc4 11.Qc1 Ne5 12.Ng3+=) 11.Ng3+= g6 (11...Qb6!?+=) 12.Ne4+= Qe5?? (better is 12...Qb6+=) 13.f4+- (13.Nc5?! Qc5 14.Qe2 Nf5=) 13...Qf5 14.g4! (14.Nc5?! Qc5 15.Qe2 Bf5=) 14...Qg4 15.Qg4 Bg4 16.Nc5 Nf5? (16...Rad8+-) 17.Nd7 Rfd8 (17...Bh3 18.Nf8 Bf1 19.Kf1 Rd8 20.Bf5 gf5 21.Nh7 Kh7+-) 18.Nf6 (18.Nf6 Kg7 19.Ng4+-) 1–0. Wall,Bill – Watabasa, internet, 2005.

4.f3 Be6 5.Nc3 +=.

4.Nf3 d4 5.e3+= Nc6 (5...de3 6.de3 Nd7 7.Nc3+=) 6.b5+/- Na5 (6...Nce7 7.ed4 e4 8.Ne5+/-) 7.ed4 ed4 (7...e4 8.Qe2+/-) 8.Bd4 Qe6 (8...Qd6 9.Be2+/-) 9.Be2+- Be7?? (better is 9...Ne7+-) 10.Bg7 (10.Bg7 Bf6 11.Bh8 Bh8 12.d4+-) 1–0. Wall,Bill – Foco, internet, 2003.

4.Nf3 Bd6 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Qf6).

4.Nf3 e4 5.Bf6 Nf6 6.Nd4 a6 7.e3 Nc6 8.Nc6 bc6 9.d4 Bd6 10.h3 0-0 11.Be2 a5 12.ba5 Ra5 13.0-0 black timed out 1–0. pillsbury (2185) – onamb (1800), net–chess.com, 2014.

4.h3 d4 5.e3 Bf5 (better is 5...c5!?=) 6.ed4 ed4 7.Qe2 Be7 8.Qb5 Nc6 9.Qb7 Qe6 10.Ne2 Rb8 11.Qc7 Bc2 12.Qg3? (better is 12.h4–/+) 12...Bf6 13.d3 Rd8 14.Nd2 Nh6 (better is 14...Ne5 15.Nc4 Nc4–+) 15.Rc1? (15.Ne4 Nf5 16.Qf4 A) 16...Bd3? 17.Nc5 (17.Nf6 Qf6 18.Rd1 Be2 19.Be2 Qe5 20.Qe5 Ne5+-) 17...Qc4 18.Rc1+- (18.Nd3?! Qd3 19.Nc3 Qc2 20.Qe4 Qe4 21.Ne4 Be5+/-); B) 16...Ne5=+) 15...Nf5 (15...Ne5 16.Rc2 Nf5 17.Qe5 Be5 18.Rc5–+) 16.Qf3? (better is 16.Qc7 Rc8 17.Qc8 Qc8 18.Rc2=+) 16...Ne5–+ 17.Nd4 (17.Rc2 Nf3 18.Nf3–+) 0–1. PoPer – Whodareswins, Live Game Caissa's Web, 2004.

4.c4 Be7 5.Nf3 Qg6 6.e3 h6 7.g3 h5 8.Bg2 h4 9.0-0 hg3 10.fg3 f6 11.Nc3 Bg4 12.Qb1 Qh5 13.Qe4 (13.Nh4 c6=) 13...Bf3 (better is 13...c6!? 14.Qc2 Bf3 15.Rf3 Qh2 16.Kf2 Qh7 17.Qh7 Rh7+=) 14.Bf3?? (better is 14.Qf3 Qf3 15.Rf3+=) 14...Qh2 0–1. Fournier,Frederic – 3aHacPycckux, Active, 2005.

4.e3 a6 5.c4 Bd7 (5...Ne7 6.d4=) 6.Nc3 c6 (6...Ne7 7.d4=) 7.Nf3 b5 (7...Qg6 8.e4+=) 8.cb5 (8.d4 Bg4+-) 8...ab5 9.d4 Bg4 (9...ed4 10.Nd4 Qg5 11.Qf3+=) 10.Be2 (10.d5 e4 11.h3 Bf3 12.gf3 Qf3 13.Qf3 ef3 14.dc6 Nc6 15.Bb5+-) 10...Bf3? (better 10...ed4!? 11.Nd4 Be2 12.Nce2 Qg5+-) 11.Bf3+- (11.gf3?! ed4 12.Nb5 cb5 13.Qd4 Qe7=) 11...Ne7?? (better 11...d5 12.de5 Qe7+-) 12.Nb5! Ra6 (12...cb5 13.Ba8 Pinning (13.Ba8 Deflection)) 13.de5 de5 (13...Qg6 14.Nd6 Kd8 15.Nf7 Ke8 16.Nh8 Qe6+-) 14.Nc7 1–0. jaddwarrior (1835) – bigjesus (1735), ChessWorld.net, 2015.

4.e3 a6 5.Bc4 Be6 6.Be6 Qe6 7.Nf3 h6 8.0-0 Nd7 9.Nc3 (9.d4 Ngf6+=) 9...0-0-0 (9...d5 10.d3=) 10.a4 (10.e4 Ngf6+=) 10...Qc4 (10...d5!?=) 11.b5+= (White wins space) 11...Qb4 (11...a5!?+=) 12.ba6+/- Qb2?? (better is 12...ba6 13.Qe2 A) 13...Qb2?? 14.Rfb1 (14.Qa6 Qb7 15.Qc4 e4+=) 14...Qb1 15.Rb1+- (15.Nb1?! Nb8+-); B) 13...Qa5+/-) 13.a7+- Nb6 14.Rb1 Qa3 (14...Qb1 15.Qb1 Na8+-) 15.Rb6! Kd7 (15...cb6 16.a8Q) 16.Rb7 Ne7 (16...Qc5 17.Nb5 Ra8+-) 17.Rb8 (17.Rb8 Nc6 18.Rd8 Nd8 19.a8Q+-) 1–0. Wall,Bill – Albatross, internet, 2002.

4.e3 a6 5.d4 Bf5=.

4.e3 Qg6 5.Nf3 Be7 6.Be2 Bf6 (6...e4 7.Nd4 Qg2 8.Rf1-+) 7.0-0? (better 7.Rg1=+) 7...e4-+ 8.Nd4 (8.d4 ef3 9.Bf3 c6-+) 8...c5 (8...Bh3 9.g3 c5 10.Nb5 Bb2 11.Ra2 Bf1 12.Bf1-/+) 9.bc5 (9.Bh5 Qg5 10.Nb5 Bh3-+ (10...Bb2?! 11.Nd6 Kf8 12.Nf7=+)) 9...dc5 (9...Bh3 10.g3 dc5 11.Re1 cd4 12.ed4-+) 10.Bh5 Qg5 11.f4 Qh4?? (better 11...ef3 12.Bf7 Kf7 13.Nf3 Qh6-+) 12.g3 Qh3 13.Nb5 Bb2 14.Ra2 g6 (14...Qd7 15.Rb2 Nf6 16.d3 ed3 17.cd3=) 15.Rb2 (15.Nc7 Kd8 16.Na8 gh5 17.Rb2 h4+/-) 15...gh5 (15...Qd7!? 16.Be2 Nf6=) 16.Nc7+/- Ke7 17.Na8 h4 (17...Nf6 18.Qe2 h4=) 18.Qe1?? (18.Qh5!? Nd7 19.Nc3+- (19.gh4? Ngf6 20.Qe2 Nb6-+)) 18...hg3 (better 18...Nf6 19.Rf2 hg3-/+) 19.Qg3+/- Qh5?? (better 19...Qg3!? 20.hg3 Na6+/-) 20.Qg5 (better 20.f5 Nc6 21.Qg7+-) 20...Qg5 (20...Nf6 21.Qe5 Qe5 22.fe5+/-) 21.fg5 Bh3? (21...f5 22.Nc3 h6+-) 22.Rf4 (better 22.Rb7 Nd7 23.Rf4+-) 22...Na6 (22...b6 23.Re4 Kd7+-) 23.Rb7 Ke6 24.Nc3 (better 24.Ra7 Nb8 25.Raf7 Nd7+-) 24...Ne7 (24...f5+-) 25.Ra7 Ng6 (25...Ra8 26.Ra8 Nc7 27.Ra7+-) 26.Ra6 Ke5 27.Rf7 1-0. BeepBeepImAJeep (2595) – angrymonkey, lichess.org, 2018.

4.e4 a6 5.d4 ed4 6.Bd4 Qf4 (6...Qe7 7.Nc3=) 7.Nc3+= c6 8.Nge2 Qg5 9.Be3 Qf6 10.Qd2 Bg4 11.h3 Be2 12.Be2 Nd7 13.Rd1 0-0-0 14.b5 ab5 (14...ab5 15.Bg5 Combination; 14...cb5 15.Bg4 Decoy) 15.Bg4 g6?? (better is 15...Re8+=) 16.Bd4+- Qg5 (16...Qe7 17.Bd7 Rd7 18.Bh8 d5+-) 17.Qg5 f6 18.Qf4 (better is 18.Bf6 Ngf6 19.Qf6 Rg8+-) 18...Re8 (18...Kc7 19.a4 Bh6 20.Qg3+-) 19.Bf6 Ngf6 20.Qf6 Be7 21.Qe6 Rd8 22.Qe7 Rhe8 23.Qd6 1–0. mrkt – Reer, zagraj.pl, 2006.

4.e4 c6 5.Bc4 h6 6.Nc3 Be7 7.Nf3 Qg6 8.g3 Bg4 9.0-0 Qh5 10.Be2 Qh3 11.d4 Nf6 12.de5 de5 (better is 12...Bf3!? 13.Bf3 de5+=) 13.Ne5+/- Be2 14.Qe2 Bd6 (better is 14...Nbd7!? 15.Nd7 Nd7+/-) 15.Nc4+- Ng4?? (15...Be7 16.e5 Nfd7 17.Nd6 Bd6 18.ed6 Kf8+-) 16.Nd6 Kf8 (16...Kd7 17.f3 Nh2 18.Rfd1 Qg3 19.Kh1+-) 17.f3 (17.f3 Ne5 18.f4+-) 1–0. Wall,Bill – Intense, internet, 2002.

4.e4 Qg6 5.f3 =.

4.e4 h5 5.Nc3 (5.d4 Qg6 6.de5 f6+=) 5...c6 (5...Qg6 6.Nf3+=) 6.Nf3 h4 7.h3 Ne7 (7...Qg6 8.d4 Nd7 9.Rg1+=) 8.d4 ed4 (8...Ng6 9.Bc1+=) 9.Qd4+/- c5? (better is 9...Nd7+/-) 10.Qf6+- gf6 11.Nb5 Kd8 (11...Kd7 12.bc5 d5 13.ed5+-) 12.Nd6 (12.Bf6?! Rh6 13.Bh4 a6+-) 12...Rh7 13.Bf6 (13.Nc8?! Kc8 14.Bf6 Nd7+-) 13...Nd7 14.Bh4 Bg7 (14...f6 15.Rd1+-) 15.Nf7 Kc7 (15...Ke8 16.0-0-0 cb4 17.Nd6 Kf8 18.Nc8 Nc8 19.ab4+-) 16.Bg3 (16.0-0-0 Bf6 17.Bg3 Kb6+-) 16...Kb6 17.bc5 Nc5 (17...Ka5 18.0-0-0 Bc3+-) 18.Rb1 Kc6 19.Bb5 Kb6 20.Bc4 Ka5 (20...Kc6 21.N3e5 Be5 22.Ne5 Kc7 23.Nd3 Kd8 24.Nc5+-) 21.Rb5 Ka4 22.Rc5 Bc3 (22...b6 23.Rc7 Bf8 24.Bd6+-) 23.Ke2 Rf7 24.Bf7 (better is 24.Bd6 Be6 25.Be6+-) 24...b6 25.Rc3 (25.Be8 Nc6 26.Bc6 Ka3 27.Rc3 Ka2 28.Bd5 Kb2 29.Rb3 Ka2 30.Rb6 Ka3 31.Ra1) 25...Ba6+- 26.Ke3 Rf8 27.Ne5 (27.Bb3 Ka5 28.Bd6 Nf5 29.ef5 Re8 30.Kf4 Bb7+-) 27...b5 28.Bb3 Ka5 29.Nc6 Nc6 30.Bc7# 1–0. marekt – lsjante, gameknot.com, 2001.

4.Nf3 Nd7 5.c4 Ne7 6.e3 b6 7.d3 g6 8.Be2 Bg7 9.e4 c5 10.b5 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Bb7 14.Nbd2 0-0 15.0-0 Bh6 16.Bc3 Bd2 17.Qd2 Ra8 18.Ra1 Ra1 19.Ba1 Kg7 20.Qa2 Nc8 21.Bc3 Qd8 22.Bd2 Nf6 23.h3 Nh5 24.g3 Qd7 25.Kg2 f5 26.ef5 Qf5 27.Qb1 Bf3 (27...Nf6!?=) 28.Bf3+= Qe6 29.Bh5 gh5 30.Qe1 d5 31.Qe2 (31.f4!? dc4 32.dc4+=) 31...dc4= 32.dc4 Nd6 33.Bf4 (33.Bc3!? Nc4 34.f4=) 33...Nc4+= 34.f3 Nd6 (better is 34...Qd5 35.Bc1 Qd4–/+) 35.Be5+= Kf7 36.Qb2?? (better is 36.f4+=) 36...Nc4–+ 37.Qa2?? Ne3 (37...Ne3 38.Kf2 Nd1 39.Ke1 Qa2 40.Kd1 Qd5 41.Kc2 Qe5–+; 37...Qe5 38.Qc4 Kf6 39.h4=) 0–1. Fournier,Frederic (1825) – sbautista (1665), Active, 2011.

4.Nf3 Be6 5.e3 Ne7 6.Be2 Nbc6 7.d3 h6 8.c4 Ng6 9.Nbd2 Be7?? (9...0-0-0 10.Qa4+/-) 10.0-0 (better is 10.Ne4+-) 10...0-0 11.e4 (11.d4 Bf5+=) 11...a6 12.Re1 Rab8 13.Nf1 Bg4 (13...Nf4 14.b5 Qg6 15.Ng3 Ne2 16.Qe2=) 14.h3 (better is 14.Ne5!? de5 15.Bg4+/-) 14...Bf3= 15.Bf3 Nf4 16.Ng3 Qg6 17.d4 (17.Bg4 Bg5+=) 17...ed4 (17...Nd4 18.Bg4+=) 18.Bd4 (18.b5 Ne5 19.Bd4= (19.Qd4? Nf3 20.gf3 Bf6–+)) 18...Nd4–/+ 19.Qd4 Bh4 20.Nf5 Rbe8?? (better is 20...Bf6 21.Qe3 Nh3 22.Kh1 Ng5–/+) 21.Nh4+- Qg5 22.g3 Nh3 23.Kg2 Nf4 24.Kh2 Ne6 25.Qd1 f5? (25...Nd8+-) 26.ef5 Rf5 (26...Rf5 27.Nf5 Qf5+-). Fournier,Frederic – Lovesymbol36, Partie evaluee, 1m + 0s, 2007.

4.Nf3 Be7 5.e3 Nh6 6.c4 c6 7.Be2 Qg6 8.0-0 Bh3 9.g3?? (better is 9.Ne1=) 9...Bf1–+ 10.Qf1 Ng4 11.Qg2 h5 12.h3 Nf6 13.h4 Ne4 (13...Qc2 14.Bc3–+) 14.d3 (14.d4!?+=) 14...Nf6–/+ 15.Nbd2 Nh7 (15...Nbd7 16.c5–/+) 16.Rf1 Nd7 17.e4 Ndf6 18.Re1 Ng4 19.Nf1 Qf6 20.N1h2 Nh2 21.Nh2 g5 22.hg5 Qg5 23.Nf3 Qg6 24.Bc1 Rg8 25.Be3 h4!–+ 26.Nh4?? Bh4 27.Qh2 Bg3! 28.fg3 Qg3 29.Qg3 Rg3 30.Kf2 Rg6 31.Rg1 0-0-0 32.Rg6 Rg8?? 33.Rg8+- Kc7 (33...Kc7 34.Rg7 Kb8+-). Fournier,Frederic – Mahir sukobina, Partie evaluee, 1m + 0s, 2008.

4.Nf3 Bg4 5.e3 Bf3 6.Qf3 Qf3 7.gf3 Nf6 8.Rg1 g6 9.f4 Nbd7 10.fe5 Ne5 11.Bg2 c6 12.f4 Ned7 13.Bh3 (13.b5 Rc8+=) 13...Be7 14.Nc3 0-0 15.0-0-0 d5 16.Rdf1 Kg7? (16...a5 17.b5=) 17.f5 (17.Bd7 d4+-) 17...Ne5 (17...Rad8 18.Ne2 Kh6 19.Nd4+=) 18.Ne2 (better is 18.Nd5!? Nd5 19.Be5 Bf6 20.Bf6 Nf6 21.Bg2+/-) 18...Nc4+= 19.Bf6 (better is 19.fg6!? fg6 20.Nf4+=) 19...Bf6–/+ 20.fg6 fg6 (20...hg6!? 21.a4 Rh8–/+) 21.Nf4+= Bb2 22.Kb1 Kh8 (22...Ba3 23.Ne6 Kg8 24.Rf8 Rf8 25.Nf8 Kf8 26.c3 Nd2 27.Ka2+=) 23.Ka2 (better is 23.d3!? Ne3 24.Kb2 Nf1 25.Rf1+=) 23...Ba3 24.c3 a5 25.ba5?? (better is 25.d3 Ne3 26.Ka3 Nf1 27.Rf1–/+) 25...Ra5–+ 26.Kb3 (26.Rg2 Bd6 27.Kb3 g5 28.Ng6 hg6 29.Rf8 Bf8–+) 26...Nd2 27.Kc2 Nf1 28.Rf1 Bc5 29.Kd3 g5 (29...g5 30.Ne6 Rf1 31.Bf1 Be7–+) 0–1. Fournier,Frederic (1915) – faixamarrom, Active, 2011.

4.e3 Ne7 5.Nf3 Nbc6 6.d4 ed4 7.Nd4 (7.b5 Ne5 8.Ne5 Be5=) 7...Nd4 (7...Be5 8.f4 Bd4 9.Bd4=) 8.Bd4 Qg6 9.Nd2 (9.Nc3 Nf5+=) 9...f6 (9...Nc6 10.Bb2=) 10.Nf3 Be5 (10...Nc6!?+=) 11.Be5+/- fe5 12.Ne5 Qf6 13.Nf3 (13.Qd4 Nf5 14.Qe4 Ne7+/-) 13...Qc3+= 14.Nd2 d6 15.Bd3 Bf5 16.Bf5 Nf5 17.0-0 0-0-0 18.Ne4 g5?? (better 18...Qe5 19.Qd3 Rhe8+/-) 19.Nc3+- 1-0. BeepBeepImAJeep (2535) - Andrey_Shans, lichess.org, 2019.

4.e4 a6 5.Nf3 b6 (5...Nc6 6.Bc4+=) 6.d4 Nc6 7.c3 Bb7 8.d5 Nce7 9.Nbd2 Ng6 10.Be2 (10.Nc4 N8e7+=) 10...Nf4= 11.0-0 Qg6 12.Nh4 (12.g3 Ne7=) 12...Qg5 13.Ndf3 Qh5 (better is 13...Qg4!? 14.g3 Nf6=) 14.Nf5+= Qg6 15.N3h4 Ne2 (15...Qf6!?+=) 16.Qe2+/- Qf6 17.Qg4 (17.c4 Ne7+/-) 17...g6 18.Nd6 Qd6 19.c4 f6 20.Rac1 (20.f4 Qe7+/-) 20...Nh6 21.Qg3 g5 (21...Nf7+/-) 22.Nf5 (better is 22.Nf3!? Nf7 23.c5 bc5 24.bc5+/-) 22...Nf5= 23.ef5 h5 (23...b5 24.Rfd1 bc4 25.Qf3=) 24.Rfe1 (24.Rfd1 Rb8+=) 24...0-0-0 25.h3 Qe7 26.Qd3 d6 27.Kh2 h4 28.Rcd1 g4 29.hg4+/- Rdg8 30.f3 Qg7 31.Rc1 Kb8 32.c5 Bc8? 33.cb6+- cb6 34.Qe3 Qb7 35.Rc6 Ka7 36.Rd6 h3 37.gh3 Qc7 38.Rc6 Qb7? 39.Rec1 Rg7 40.Qc3 Kb8 41.a4 Rhh7 42.Rc8 Ka7 43.d6 Rd7 44.Rc7 Rc7 45.dc7 (45...Qc8 46.a5+-) 1–0. DanielMena – Steve20, ChessWorld.net, 2006.

4.e4 c5 5.c3 Nc6 6.Nf3 g5 (6...a6 7.bc5 Bc5 8.d4+=) 7.h3 h5 8.d3 Qf4? (better is 8...g4 9.Ng1 Nh6+=) 9.Bc1+- Qf6 10.Bg5 Qe6 11.Bh4 (11.Be3 b6+-) 11...Be7 12.Ng5 Qg6 13.Nf3 Nf6?? (13...Qe6 14.Be7 Qe7+/-) 14.Nbd2 d6 15.Nc4 b5 16.Ne3 cb4 17.cb4 Nd4 18.Nd4+- ed4 19.Nf5 Bf5+= 20.Bf6 Bf6 21.ef5 Qg5 22.Qf3+/- 0-0 23.Be2 Rac8 24.0-0 Kh7 25.Qh5 Qh5 26.Bh5 Kh6 27.g4 Bh4 28.f4 Bg3? 29.Rf3 Bh4 30.a4 ba4 31.Ra4 Rc1 32.Rf1 Rc3 33.Rd1 Re8 34.Raa1 Rc2? 35.Bf7 Ree2 36.Bd5 Bf2 37.Kf1 Bg3 38.g5 Kg7 39.Ra7 Kf8 40.g6 Rf2 41.Kg1 Bh2 42.Kh1 Rf4 43.g7 Ke8 44.g8R# (44.g8Q#) 1–0. nordlicht (2115) – harzer, GK tournament, 2006.

4.Nf3 b6 5.e4 a5 6.Bc4 (6.b5 Bb7 7.d4 A) 7...Be4? 8.de5 (8.Ne5?! Be5 9.de5 Qg6=) 8...Qe6 9.Ng5 Bb4 10.ab4+-; B) 7...ed4 8.Qd4 Qd4 9.Bd4 Ne7+=) 6...c5 (6...ab4!? 7.ab4 Ra1 8.Ba1 Bb7=) 7.bc5 bc5 8.Bd5 (8.Nc3 Ba6 9.Ba6 Na6+/-) 8...Ra7 (8...Nc6 9.Bc6 dc6 10.d3=) 9.0-0 Ba6 10.d3 Nh6 (10...Nc6 11.Bc6 dc6 12.Qe1+/-) 11.Nc3 (11.Qd2 Bc7+/-) 11...Nc6+= 12.Bc6 dc6 13.Bc1 Qd8 (13...0-0 14.Bg5 Qe6 15.h3+=) 14.Bh6 gh6 15.Qd2 Qf6 16.Ne2 Kd8? (better is 16...Rg8 17.Ng3 Bc8+/-) 17.Qa5+- Bc7 (17...Kd7 18.Ng3+-) 18.Qc5 (18.Qc5 Ra8 19.Ng3+-) 1–0. Wall,Bill – Busta, internet, 2002.

4.Nf3 Nc6 5.c4 Nh6 6.c5 Bf8 7.e3 d6 8.cd6 Bd6 9.Nc3 Be6 (9...e4 10.Nd4 Nd4 11.ed4=) 10.Ne4 Qf5 (10...Qg6 11.Qc2 Bd5 12.Nd6 cd6 13.Qg6 hg6 14.Be2=) 11.Nd6 (better is 11.Bd3!? Kf8 12.Nc5+/-) 11...cd6+= 12.Rc1 0-0 13.g3 a6 14.Be2 f6 15.0-0 Qh3 16.Re1 Ng4 17.Bf1 Qh6? (17...Qh5 18.h3 Nh6 19.d4 Bh3 20.Ne5 Qd1 A) worse is 21.Rcd1 Ne5 (worse is 21...fe5 22.Bh3 ed4 23.ed4+=) 22.de5 Bf1+=; B) 21.Red1 Bf1 22.Nc6+=) 18.Nh4 (better is 18.h3 f5 19.hg4 fg4 20.Nh4+-) 18...f5= 19.h3 Nf6 20.Qf3 Ne4 21.Red1 Ng5 22.Qg2 (better is 22.Qh1 f4 23.Bg2=) 22...Ne4 (better is 22...f4!? 23.Qh1 fg3 24.fg3 Qf6–/+) 23.d3 Ng5 (better is 23...Nf6=) 24.Nf3 (24.f4 Nf7+/-) 24...Nf3 (24...Bd5!? 25.e4 Nf3 26.Qf3 fe4–/+) 25.Qf3= Rf6 (25...Rac8 26.d4 e4 27.Qf4 Qf4 28.ef4=) 26.Bg2 Rg6 27.d4 e4 28.Qf4 Qf4 29.ef4 d5 30.Rc5 Rf6 31.Rdc1 Rff8 32.Kf1 Rac8 33.h4 Na7 34.Rc8 Rc8 35.Rc8 Bc8 36.Ke1 Nb5 37.Bf1 Nd6 38.Be2 g6 39.Kd2 b5 40.Kc2 Kg7 41.Bf1 h6 42.Be2 Kf6 43.Ba1 g5 44.hg5 hg5 45.fg5 Kg5 46.Bb2 Nf7 47.Bc1 Kf6 48.Bh5 Nd6 49.Be2 Kg6 50.Bf4 Nc4 51.Bc4 dc4 52.d5 Kf6 53.Kc3 Bb7 54.Kd4 Ba8 55.Kc5 Bb7 56.Kb6 Bc8?? 57.d6?? Ke6= 58.Kc7 Bd7+= 59.Kb6 Bc8 60.Kc6 Bd7 61.Kc7 Be8 62.Kb6 c3+= 63.Ka6 c2 64.Kb6 Kd5 65.Kc7= Bc6?? 66.d7+- Bd7 67.Kd7 Kd4 68.Kc6 Kc4 69.Be3 1–0. Fournier,Frederic (1755) – AlbertNurgalyamov, ChessOK.com, 2012.

4.Nf3 Nh6 5.e3 c5? (better is 5...Nc6!?+=) 6.bc5+- Bc5 7.Be5 Qg6 8.Bg3 Nc6 9.Nc3 0-0 10.Bd3 Qh5 11.Be2 d6 12.d4 Bb6 13.Ne5 Ne7?? (better is 13...Qg5 14.Nc6 bc6 15.Bd6 Ba5+-) 14.Bh5+- Nef5 (14...Ba5 15.Qd2 Nd5 16.Nd5 Bd2 17.Kd2 de5 18.Be5+-) 15.Be2 (better is 15.Nc4 Be6 16.d5 Bd7+-) 15...Ng3 16.hg3 Bg4 (16...Ba5 17.Qd2 de5+-) 17.Ng4 Ng4 18.Bg4 Rae8 19.Qd3 g5 20.Qh7 1–0. Fournier,Frederic (1825) – sion13, Active, 2011.

4.Nc3 d6 =.

4.e3 d6 5.Be2 (5.d4 Be6=) 5...Qg6+= 6.Nc3 (6.Bf1 Bf5+=) 6...Qg2–/+ 7.Bf3 Qg6 8.Bh5 (8.Be4 f5 9.Bf3 Qe6–/+) 8...Qf5 9.Nd5 Na6 10.f4 (10.Be2 Be6 11.Nc3–/+) 10...g6 (better is 10...Be6 11.c4 c6–+) 11.Be2+= Be6?? (better is 11...c6 12.Ba6 cd5 13.Bb5 Bd7 14.Bd7 Kd7+=) 12.Bd3 (better is 12.e4 Bd5 13.ef5 Bh1 14.fe5 gf5 15.Ba6 ba6 16.Qe2+-) 12...e4?? (12...Bd5!? 13.Bf5 Bh1+/-) 13.Ba6 (better is 13.Nf6 Kd8 14.Ne4+- (14.Be4?! Qb5+-)) 13...Qd5 14.c4 Qf5?? (14...Qd3 15.Bb7 Be7 16.Bc6 Bd7 17.Bd7 Kd7=) 15.Bb7 Rb8 16.Bc6 Bd7 17.Bd7 Qd7 18.Bh8 Qe6 19.Qa4 Kd8 20.Rc1 f6 21.Ne2 Be7 22.Nd4 White prepares the advance b5 22...Qd7 23.Qa7 Rc8 24.b5 c5 25.Qd7 Kd7 26.Nc6 Bf8 27.Bf6 Ra8 28.Ra1 Ra4 29.Ke2 Ng4 30.Bc3 Be7 31.Ne7 Ke7 32.b6 (32.b6 Ra8 33.h3+-) 1–0. mgriffin – smeserkhani (1775), net–chess.com, 2001. (=1.a3 e5 2.b4 Nh6 3.Bb2 Qf6)

4.e4 Ng4?? (better is 4...Nc6=) 5.Qg4+- d5 (5...Be7+-) 6.Qc8 Qd8 7.Bb5 Nc6 (7...c6 8.Qb7 Nd7 9.Bc6+-) 8.Qb7 (8.Qb7 Ke7 9.Qc6+-) 1–0. Fournier,Frederic (2090) – Kamaljawad, Active, 2012.

4.a4 ab5 5.ab5 Ra1 6.Ba1 b6 7.Nf3= Bd6 8.e3 Ne7 9.Nc3 0-0 10.Ne4+= Qe6 11.Nd6 cd6 12.Be2 h6 13.0-0 Ng6 14.Qb1 Bb7 15.c4 Bf3 16.gf3 d5 17.Qb3?? Nh4–+ 18.Kh1 Qh3 19.Rg1=+ Nf3 20.Bf3 Qf3–/+ 21.Rg2 dc4 22.Qc4 Qd1 23.Rg1= Qd2 24.Be5+/- g5 25.Qf4 Qd5 26.f3 Qe6?? 27.Bb8 Kh7 28.Qe5 Qh3 29.Qg3 Qg3 30.Bg3 d5 31.Rd1 Rd8 32.Bc7 Re8 33.Rd3 Rc8 34.Bb6 Rb8 35.Bc7 Rb5 36.Kg2 f5 37.Kg3 h5 38.h4 Rb4? 39.hg5 h4 40.Kh3 Kg6 41.Bf4 Rb1 42.Rd5 Rh1 43.Kg2 h3 44.Kh1 (44...Kf7 45.Rd6 Kf8 46.g6 Kg7 47.Be5 Kh6 48.g7 Kh7 49.Rd8 Kg6 50.g8Q Kh5 51.Qh7 Kg5 52.Rg8) 1–0. katchum (2390) – pede (2130), net–chess.com, 2004.

4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 Nh6 9.Qc2+/- Qd8 (9...Kd8 10.Nf3 d6 11.d4+/-) 10.Be5 d6 11.Bb2 Nd7 12.d4 (12.e4 Nb6+/-) 12...Be7 (12...d5 13.Nf3+/-) 13.Nf3 0-0 (13...Nf6 14.e3+/-) 14.e3+- Qa5 15.Nbd2 (15.Nc3 Nf6+-) 15...Qb5?? (better 15...Nf6+/-) 16.Bb5+- 1-0. DEFFM – GuestTBNY, freechess.org, 2021.

4.a4 b6 5.e3 Bb4 6.c3 Ba5 7.Qf3 c6 8.Qf6 Nf6=+ 9.ba6 Na6 10.Ba3 c5 11.Nf3 d6 12.Bb5 Bd7 13.Bd7 Nd7 14.0-0 0-0 15.Bb2 Nc7 16.d4 f6 17.Nbd2 Rab8 18.Nc4 d5=+ 19.Na5 ba5 20.Ba3 Ne6 21.Rab1 Rfc8 22.Rb6?? Rb6 0–1. tanto (1715) – parkin (1775), net–chess.com, 2002.

4.a4 d5 5.e3 =+.

4.Nf3 d6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nh6 8.e3 Be7 9.Be2 (9.Nc3 c6=) 9...Ng4 (9...Qg6 10.0-0=) 10.Nc3= Be6 11.0-0 Qh6 (11...Qg6 12.Bd3 f5 13.e4=) 12.d4+= 0-0 (12...Nd7 13.d5 Bf5 14.e4=) 13.h3 Nf6 14.de5 de5 15.Ne5 Qg5 16.Nf3 Qg6 17.Bd3 Qh5 (17...Qh6 18.Nd4+/-) 18.Ne2 Bh3?? (better 18...Qh6+/-) 19.Nf4+- (19.gh3?! Qf3 20.Ng3 Qd1 21.Rd1 Rd8+/-) 19...Qg4 20.Nh3 Nh5 (20...Nbd7 21.Nd4 Ra8 22.Nf5+-) 21.Bh7! Kh7 (21...Kh8+-) 22.Nfg5!! Bg5 (22...Qg5 23.Ng5 Kh6 24.f4+-) 23.Qg4 (23.Qg4 Bh6 24.Qh5+-) 1-0. DEFFM – GuestLRZL, freechess.org, 2021.

4.Nf3 Bd6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Ne7 8.e3 0-0 9.Bd3 c6 (9...h6 10.Nc3+-) 10.Ne5! Be5 11.Bh7 Kh7 12.Qh5 Kg8 13.Be5 Qg6? (better 13...Qe6!? 14.Bb8 d6 15.bc6 bc6+-) 14.Qg6+- Ng6 15.Bb8 cb5 (15...d5 16.Bd6 Rd8 17.Bc7+-) 16.Bd6 Re8 17.Nc3 Re6 18.Nb5 b6 19.f4 (19.Bg3 Ne7+-) 19...Nh8? (better 19...Nh4 20.Be5 Bb7+-) 20.f5 Rf6 21.Bb4 Rf5 (21...Bb7 22.Nd6 Bc6+-) 22.Nd6 Rg5 23.Nc8 b5 (23...Rg4 24.Ne7 Kh7 25.Nd5 Rg2 26.Nb6+-) 24.0-0 Ng6 25.Nd6 f6 (25...Ne5 26.Bc3+-) 26.Rf5 Rg4 (26...Rf5 27.Nf5 Ne5 28.Nd6+-) 27.Rb5 Ne5 (27...Rg5 28.Rg5 fg5 29.Kf2+-) 28.d4 Nc6 29.Rb7 1–0. GuestPSSG – GuestQCHP, freechess.org, 2020.

4.e3 a6 5.c4 ab5=+ 6.cb5 Ra5 (6...d5 7.Qf3=) 7.a4 (7.Nc3 Qe6=) 7...c6 (7...d5 8.Qf3=) 8.f4 (8.Nf3 d6=) 8...d6 9.Nf3 cb5 (9...Nd7!?+=) 10.Bb5+/- Bd7 11.Bd7 (11.fe5 de5 12.0-0 Bd6+/-) 11...Nd7+= 12.g3 (12.Qb3 Qg6 13.0-0 e4+-) 12...Ne7 13.Bc3 Ra8 (13...Ra6 14.0-0=) 14.a5 (14.0-0+=) 14...b6 (14...0-0!?=) 15.a6 (15.d4 ed4 16.ed4 Nd5+/-) 15...0-0 (better is 15...Nd5+/-) 16.a7 (better is 16.0-0!? Nd5 17.fe5 Ne5 18.Ne5 Nc3 19.Nc3 (19.Rf6 Nd1 20.Rf1 Ne3 21.de3 de5–/+) 19...Qe5 20.Qf3+/-) 16...Nc6 17.Qa4 Rfc8=+ 18.h4? Rc7 19.Qe4=+ b5 20.Rf1 Ba7 21.fe5 de5 22.Ne5 Qe6 23.Rf4?? Nde5–+ 24.Be5 Qe5 25.Qe5 Ne5 26.Ke2 Rb8 27.Rb4 Bc5 28.Re4 f6 29.d4 Ra7 30.Ra7=+ Ba7 31.de5 fe5 32.Re5=+ b4 33.Ra5 Rb7–/+ 34.Nd2 Re7 35.Nc4 Bb8 36.Rb5 Bg3=+ 37.Rb4 Bh4–/+ 38.Nd6 g5?? 39.Rb8+= Kg7 40.Nf5 Kf7 41.Ne7 Ke7 42.Rb7 Kf6 43.Rh7 Kf5 44.Rf7 Kg4 45.e4 Kh3? 46.e5 g4 47.e6 g3 48.Kf1 Kh2 49.Ke2 g2 50.Rf4?? Kg3?? 51.Rh4?? Kh4?? 52.e7 g1Q= 53.e8Q Qg2 54.Kd3 Qd5 ½–½. riverborne – darkstar1, Caissa.com, 2004.

4.e3 a6 5.Nf3 ab5 6.Be5 Qg6 7.Bd3 Qh6 (7...Qg2?? 8.Rg1 Qg1 9.Ng1+-) 8.Bc7 Ne7 (8...b4 9.Bf4 Qf6 10.Bc4+-) 9.Bf4 (9.Bb5 Na6 10.Bg3 Qb6+-) 9...Qf6 (9...Qc6 10.Nc3+-) 10.Nc3 0-0? (10...b4 11.Ne4 Qb6+-) 11.Ng5 (11.Nb5?! d5+-; 11.Bb5?! d5+-) 11...h6 12.Nh7 Qc6 13.Nf8 Kf8 14.0-0 b4 15.Nb5 Bb6 (15...Na6 16.Qg4+-) 16.Qh5 Bd8 (16...Bc5 17.Bc4 d5 18.Nc7+-) 17.Nd6 Ng6 (17...Qd5 18.Qd5 Nd5 19.Nc8 Nf4 20.ef4 Bc7+-) 18.Bg6 fg6 (18...Bg5 19.Bg3 Ra6 20.Bf7 Qd6 21.Bd6 Rd6+-) 19.Qg6 Qd5 20.Qe8 1-0. GuestXWVH – GuestDGYZ, freechess.org, 2020.

4.e3 Qb6 5.Be5 d6?? 6.Bg7 Nf6 (6...Be6 7.Bh8 Nd7 8.a4+-) 7.Bh8 Ne4 (7...Nbd7 8.Nc3 d5 9.Nh3+-) 8.Qh5 a6 (8...d5 9.Qd5 Nf6 10.Qg5+-) 9.Qh7 (better 9.Qd5 Nd2 10.Nd2 ab5+-) 9...ab5 (9...d5 10.Nc3 Nc3 11.Bc3 ab5 12.Qg8 Bf8 13.Nf3+-) 10.Qg8 Kd7 11.Qf7 Kc6 12.Qe8 Bd7 13.Qe4 d5 14.Qg6 Bd6 15.Nc3 Qc5 16.Bd4 Qb4 17.Bb5 Qb5 18.Nb5 Kb5 19.Rb1 Kc6 20.Qd3 (20.Qd3 Be7 21.Nf3+-) 1–0. GuestNTFH – GuestJWGQ, freechess.org, 2020.

4.e3 Ne7 5.Nc3 d5 6.Rb1 0-0 7.Nf3 Nd7 (7...Bd6 8.Bd3–/+) 8.Be2 (8.d4 ed4 9.Nd4 Re8=) 8...Bb4 9.0-0 Bc3 (9...Qg6!?=+) 10.Bc3 Nf5 (10...Qe6 11.Bb4=) 11.d3 (11.Ne5 Ne5 12.f4 d4 13.fe5 Qe5 14.ed4 Nd4+=) 11...Rd8 12.e4 de4 13.de4 Nc5 (13...Nd4 14.Nd4 Nc5 15.f4+=) 14.Qe1 Nd4 15.Nd4 (15.Bd4 ed4 16.e5 Qe7=) 15...ed4=+ 16.Bb2 (16.Ba5!? Qf4 17.f3=+) 16...Ne4 17.f3 Nc3 (18.Bc3 dc3–/+) 0–1. beyonze1 – ZzzZzz, Live Game Caissa's Web, 2004.

4.e3 Ne7 5.Nf3 d6 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.d4 ed4 11.0-0 0-0 12.Nbd2 de3?? (better 12...Nf5=) 13.Bf6+- ef2 14.Rf2 Bf2 15.Kf2 gf6 16.Ne4 Kg7 (16...Nd7 17.Qd6 f5 18.Neg5+-) 17.Qd6 (17.Qd6 Ng6 18.Nf6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Ne7 5.Nf3 d6 6.Be2 (6.d4 ed4 7.Nd4 Nf5=) 6...a6 7.c4 (7.Nc3 Bb4=) 7...Be6 (7...ab5 8.cb5 Qg6 9.d4 Bb4 10.Nfd2 ed4 11.Bd4 Qg2 12.Bf3–/+) 8.a4 (8.Qb3 ab5 9.d4 bc4 10.Qb5 Bd7 11.de5 Qf3 12.Qd7 Nd7 13.Bf3 de5–+) 8...0-0 (8...Qg6 9.Bf1=+) 9.0-0 Qg6 (9...ab5 10.ab5 Nd7=) 10.Kh1 (10.d4 ed4 11.ed4 Bb4+=) 10...c6 (10...e4 11.Nd4 ab5 12.ab5 Ra1 13.Ba1 Bd4 14.ed4 d5=) 11.d4+= ed4 12.ed4 Bb6 13.a5+/- Bd8 14.b6 d5 15.c5 Nf5 16.Nbd2 Nd7= 17.Nb3 Nf6 18.Ne5+= Qh6 19.Qd3 Ne4= 20.Bf3 Ng5 21.Bc1 f6 22.Ng4 Qh4 23.g3 Qh3 24.Bg5 fg5 25.Qe2 h5? 26.Bg2 Qg4 27.Qe6 Kh8 28.h3?? Ng3!–+ 29.fg3 Qe6 30.Rf8–/+ Kh7 31.Raf1 Bf6?? 32.Ra8+- Qe3 33.Rf3 Qe1 34.Kh2 h4 35.Ra7 hg3 36.Rg3 Qe7 37.Bf1 Qe4 38.Bd3 (38...Qd3 39.Rd3+-) 1–0. baqua – bullwinkle, Live Game Caissa's Web, 2004.

4.e3 Ne7 5.Nf3 Nf5 6.Be5+/- Qg6 (6...Qd8 7.d4 Be7 8.e4+/-) 7.g4 (7.Bc7 0-0+-) 7...Nd6 (7...Qg4 8.Rg1 Qb4 9.Nc3+-) 8.d4 Bb6 9.Bd3 Qh6 (9...Ba5 10.Nbd2 Qe6+-) 10.g5 Qh5 (10...Qh3 11.Bg7 Rg8 12.Bf6+-) 11.Bg7 Rg8 12.Bf6 (12.Be5 Ba5 13.c3 a6 14.Bd6 cd6+-) 12...Rg6 (12...a6 13.ba6 Ba5 14.Nfd2+-) 13.Ne5 Rf6 (13...Rg5 14.Bg5 Qg5+-) 14.Qh5 (14.Qh5 Re6 15.Qh7+-) 1-0. DEFFM – GuestJTNQ, freechess.org, 2021.

4.e3 Ne7 5.f4 d6 6.Nf3 =.

4.e3 Nh6 5.Nc3 Qe6 =.

4.e3 Nh6 5.Nf3 0-0 6.Be5 Qe6 (6...Qd8 7.Nc3+-) 7.Bc7 d6 (7...d5 8.Bd3 Qe7 9.Bf4+-) 8.Nc3 (8.d4 Bb4 9.c3 Qe7+-) 8...b6? (better 8...Nd7+-) 9.Bd3 (better 9.Ng5 Qf5 10.Qf3 Qf3 11.gf3+- (11.Nf3?! Bb7+-)) 9...Nd7 (9...Bb7 10.0-0 Qe7 11.Bb8 Rab8+-) 10.Bh7! Kh7 (10...Kh8 11.Be4 Rb8 12.Bb8 Nb8 13.Bd5+-) 11.Ng5 Kg8 12.Ne6 fe6 13.Ne4 Bb7 14.Nc5 Nc5 (14...dc5 15.0-0+-) 15.Bd6 Bg2 (15...Rfc8 16.f3+-) 16.Bf8 Kf8 (16...Rf8 17.Rg1 Bf3 18.Qc1+-) 17.Rg1 (17.Rg1 Be4 18.Qh5+-) 1–0. GuestZNHB – GuestWRJP, freechess.org, 2020.

4.e3 Nh6 5.Nf3 d5 6.Be5 Qb6 (6...Qe6+-) 7.Nc3 Ng4 (7...Qe6 8.Bg7 Rg8+-) 8.Nd5 Qa5 (8...Ne5 9.Nb6 Nf3 10.Qf3 ab6 11.Qe4 Be7+-) 9.Nc7 Kf8 10.Na8 Ne5 (10...Nd7 11.Bc7 Qa3 12.c3+-) 11.Ne5 Qd8 (11...Nd7 12.Qh5 Ne5 13.Qe5+-) 12.Nf7! Kf7 13.Qh5 g6 14.Qc5 Nd7 (14...Qf6 15.Bc4 Kg7 16.0-0+-) 15.Bc4 Kg7 16.Qa7 Ne5 17.Nb6 Nc4 18.Nc4 Rf8 19.Qc5 Qf6 20.0-0 b6 21.Nb6 Bb7 22.Nd7 Rf7 23.Nf6 Rf6 24.Qd4 Ba8 25.a4 g5 26.f4 Kg6 27.fg5 Rf1 (27...Rf7 28.Qd6 Kg5 29.Rf7 Be4 30.Qg3 Kh5 31.Rf4 Bg2 32.Rh4) 28.Rf1 Kg5 (28...Kh5 29.Qg7 Bd5 30.Rf4 Bg2 31.Qh6) 29.Qf6 Kh5 30.Rf5 Kg4 31.Qg5 1–0. GuestHQLF – GuestPHZF, freechess.org, 2020.

4.e3 Nh6 5.Nf3 d6!?=.

4.e3 Nh6 5.Nf3 Ng4 6.h3+/- Nh6? 7.d4?? ed4= 8.Bd4 Bd4 9.Qd4 Qd4 10.Nd4 0-0 11.Bd3 c6 12.0-0 c5 13.Nb3+/- d5 14.Nc5+- b6 15.Nb3 a5 16.Nc3 Be6 17.Nd4 Rc8 18.Ne6 fe6+/- 19.Ne2 Nd7 20.Nd4 Nc5 21.Nc6 Re8 22.Ne5 a4 23.Nc6 Rac8 24.Rac1 g5 25.Be2 Ne4 26.Bd3?? g4?? 27.hg4 Ng4? 28.f3 Nd2 29.fg4 Nf1 30.Rf1 a3 31.Kf2 Rf8 32.Ke2 Rf1 33.Kf1 Kf7 34.Ne5 Ke7 35.Bh7 Rf8 36.Ke2 Rc8 37.Nc6 Kd6 38.Nd4 e5 39.Nf5 Kd7 40.g5 Rc2 41.Kd3?? Ra2–+ 42.g6?? Rg2 43.g7 Rg7!! 44.Ng7 a2 45.Nf5 a1Q 46.e4 Qb1 47.Ke3 Qe4 48.Kd2 Qb4 49.Kc2 Qb5 50.Ne3 Qe2 (51.Kb1 Qe3–+) 0–1. makaveli1982 – Adella25, internet, 2007.

4.e3 Nh6 5.h3 d6 6.Be2 0-0 7.g4 d5 8.h4 Qb6 9.a4 a5 10.Nf3 Bg4 11.Ne5 Be6 12.Nf3 c6 13.Rg1= g6 14.Nh2 cb5 15.Bf6 ba4=+ 16.Bh5? Bg4 17.Bg4 Qf6–+ 18.Nc3 d4 19.Ne4 Qe5 20.Bf3? de3 21.Rg2 ef2 22.Rf2 Bf2 23.Kf2 Qh2 24.Ke3 Nf5 25.Kd3 Rd8 26.Kc3 Qe5 27.d4 Rd4 (28.Qd3 Rd3 29.Kd3 Qd4 30.Ke2 Qe3 31.Kd1 Qf3 32.Kc1 Qh1 33.Kb2 Qe4–+) 0–1. riverborne – step1chess, Live Game Caissa's Web, 2005.

4.e4?? Qf2 0–1. NN – Schell, 1974.

4.Nf3 e4?? 5.Bf6+- ef3 6.Bg7 d5 7.ef3 Bf5 8.Bh8 f6 9.Qe2 Ne7 10.Bf6 Nd7 11.Be7 Be7 12.Nc3 0-0-0 13.Qe7 Bg6 14.0-0-0 Re8 15.Qa3 (better 15.Qg7 Nb6+-) 15...Nb6 16.Qa7 Nc4 17.Qa8 (17.Bc4 dc4 18.Qa8 Kd7 19.Qb7 Ke7+-) 17...Kd7 18.Qb7 Na3 19.Nd5 Kd6 20.Qc6 Ke5 21.d4 Kf5 22.Qf6 1–0. DEFFM – SujithLenin, freechess.org, 2020.

4.Nf3 e4?? 5.Bf6+- gf6 6.Nh4 (6.d4 Bb6 7.Nfd2 Bd4+-) 6...d6 (6...d5 7.e3+-) 7.d4 (7.Nc3 f5+-) 7...Bb6 8.e3 Ba5 (8...Ne7 9.c3+-) 9.Nd2 (9.c3 Ne7+-) 9...Bd2 (9...Bc3 10.Rc1+-) 10.Qd2 f5 (10...Ne7 11.f3 f5 12.Qc3+-) 11.c4 Be6 12.Be2 Nf6 13.Qc3 b6 14.d5 Nd5 15.Qh8 Ke7 16.cd5 Bd5 17.Nf5 (17.Nf5 Kd7 18.Qf6+-) 1–0. pumpkin (2280) – avsholom (1785), net–chess.com, 2008.

4.Nf3 e4?? 5.Bf6+- Nf6 6.d4 Bb4 7.Nfd2 +-.

4.Nf3 e4?? 5.Bf6+- Nf6 6.Ng5 (better is 6.d4 Be7 7.Nfd2 a6+-) 6...Ng4 (6...d5 7.d4 Bd6 8.g3+-) 7.Ne4 Bb6 8.e3 (8.Nbc3 f5 9.e3 d5+-) 8...Ne5 (8...d5 9.Nec3 Nf6 10.Qf3+-) 9.Be2 (9.f4 d5 10.Qh5 Nbd7+-) 9...d5 10.Ng3 Bd7 (10...0-0 11.d4 Ng6 12.0-0+-) 11.0-0 a6 (11...0-0 12.d4 Ng6 13.Bd3+-) 12.ba6 Na6 13.d4 (better is 13.Ba6 Ra6 14.Qh5 Ng6 15.Qd5 Bc6+-) 13...g6 14.de5 Nb4 15.Nc3 Ba4 16.Bb5 Bb5 17.Nb5 Ra2 18.Ra2 Na2 19.Qd5 Nb4 20.Nc7! Bc7 21.Qb7 Ba5 22.Qb5 Ke7 23.Qa5 Nc2 24.Qc5 Ke6 25.Qc2 Rd8+- 26.Qc6 Ke7 27.Qc7 Rd7+- 28.Qd7! Kd7 29.Ne4 Ke6 30.f4 Kf5 31.Nf6 31...h5 32.Ra1 Ke6 33.h4 Ke7 34.Ra7 Ke6 35.Kf2 Kf5 36.Kf3 1–0. pumpkin (2325) – mduerr (1700), net–chess.com, 2009.

4.Nf3 Ne7 5.Be5+- Qg6 6.e3 (better 6.Bc7 Nd5 7.Bg3+-) 6...Nf5? (better 6...d6 7.Bd3 f5+-) 7.g4+- Ne7 8.Bd3 Qg5 (8...Qe6 9.Bc7 h6+-) 9.Ng5 (9.Ng5 f6 10.Ne4 fe5 11.Nc5+-) 1–0. DEFFM – GuestHSKV, freechess.org, 2020.

4.Nf3 h6? 5.Be5+- Qb6 6.e3 Nf6 7.Nc3 Qe6 8.Bc7 (8.Bd3 d6 9.Bf6 Qf6 10.Bc4 c6 11.Ne4 Qe7 12.Nc5 dc5) 8...d6 9.Na4 Nbd7 10.Be2 Nd5 (10...0-0 11.0-0 Qe7 12.Ba5 Bb6) 11.Bc4 (11.Nc5 Nc5 12.Bc4 0-0) 11...0-0 12.Nc5 dc5.

4.Nf3 h6? 5.Be5+- Qf5 6.Bg7 (6.Bc7?! Bf2 (6...Nf6 7.e3 d5 8.Bd3 Ne4 9.Nc3 0-0 10.0-0 Nd7 11.Nd4 Bd4; 6...d5 7.d4 Bb6 8.Bb6 ab6 9.e3 Nf6 10.Nbd2 0-0 11.Bd3 Qh5) 7.Kf2 Qc5 8.e3 Qc7+- 9.Nc3 Nf6 10.Nd4 d6 11.Bd3 Nbd7) 6...f6 (6...Rh7 7.Bd4 Bd4 8.Nd4 Qg4+- 9.Nf3 Nf6 10.h3 Qh5 11.Nc3 d6) 7.Bh8 Ne7 (7...Qh7+- 8.Nc3 Qh8 9.e3 Ne7 10.Bc4 c6 11.Rb1 d5) 8.e3 Qg6 (8...Qe6 9.Nc3 (9.d4 Bb6 10.Nbd2 Kf8 11.d5 Nd5) 9...d6 (9...d5 10.Na4 Bd6 11.c4 Nd7) 10.Nh4+- Qf7 11.Ne4 Nd7) 9.d4 (9.Nh4!? Qf7 10.Qf3 (10.Nc3 d5 11.Qf3 Nd7) 10...d5 11.Qf6 Qf6 12.Bf6 Nd7+-; 9.Nc3 d6 10.Nd4 Bd4 11.ed4 Bg4) 9...Bb4 10.c3 Ba5 11.Bd3 (11.Nh4!? Qf7 12.Qa4 Bb6+-) 11...Qf7 12.Nfd2 (better is 12.Qa4 b6 13.d5 d6+-) 12...Kf8 (12...Qf8 13.Qh5 Kd8 14.Nc4+-) 13.Qf3 Kg8 (13...d5 14.Qf4 Kg8 15.Bf6+-) 14.Bf6 1–0. Anonymous – jaunu, internet, 2011.

4.Nf3 h6? 5.Be5+- Qg6 6.Bc7 A) 6...d6 A1) 7.Nc3 Ne7 (7...Nf6 8.e3 0-0 9.a3 Ne8 10.Bd8 Qe6 11.d4 Bb6 12.d5 Qd7; 7...Qe6 8.Rb1 Nf6 9.d4 Bb6 10.Bb6 ab6 11.e3 0-0 12.Qd2 Qe7) 8.e3 Qe6 9.Bd3 0-0 10.0-0 a6 11.Qe2 ab5 12.Nd4 Qd7; A2) 7.e3 Ne7 (7...Nf6 8.d4 Bb6 9.Bd6 Ba5 10.c3 Ne4 11.Ba3 Nd7 12.Qb3 h5) 8.Nc3 0-0 9.Bd3 Qe6 10.0-0 a5 (10...a6 11.h3 ab5 12.Nd4 Qd7) 11.Qe2 Qd7 12.b6 Nbc6; B) 6...Ne7 7.Nc3 0-0 (7...d5 8.e3 0-0 9.Bd3 Qg2 10.Rg1 Qh3 11.Rg3 Qe6 12.Ne5 Nd7; 7...d6 8.e3 Qe6 9.Na4 0-0 10.Nc5 dc5 11.Bd3 Nd5 12.Bg3 a6; 7...Bb6 8.Bb6 Qb6 9.e4 0-0 10.Bc4 d6 11.0-0 Qc5 12.Qe2 Bg4) 8.e3 d6 (8...Qe6 9.Bd3 d6 10.0-0 a6 11.Nd4 Qd7 12.Bb8 Rb8) 9.Bd3 Qe6 10.0-0 a6 11.h3 (11.a4 Qd7 12.b6 Nbc6) 11...ab5 12.Nd4 Qd7; C) 6...Nf6 C1) 7.Nc3 0-0 (7...Ne4 8.e3 0-0 9.Bd3 Nc3 10.dc3 Qf6 11.Nd4 d6 12.0-0 Qe7; 7...Qf5 8.e3 d6 9.a3 Qd7 10.Ba5 0-0 11.Be2 Qe7 12.0-0 Bb6; 7...Qg4 8.Ne5 Qe6 9.Nd3 d6 10.e3 Qe7 11.Nc5 Qc7 12.Nd3 Nbd7; 7...d5 8.e3 0-0 9.Ne5 Qf5 10.Be2 Bb6 11.Bd3 Qe6 12.Bb6 ab6) 8.e3 d6 9.a3 Ne8 10.Bd3 (10.Ba5 Qe6 11.Be2 a6 12.ba6 Nc6) 10...Qe6 11.Ba5 a6 12.ba6 Na6; C2) 7.e3+- Nd5 8.Bd3 (8.Bg3 0-0 9.Bd3 Qf6 10.Be5 Qe6 11.Nc3 d6 12.Bd4 Nc3) 8...Qe6 9.Be5 0-0 10.Nc3 (10.Bd4 d6 11.Nc3 Nc3 12.Bc3 Nd7) 10...d6 11.Nd5 Qd5 12.Bd4 Bd4.

4.Nf3= Nh6 5.Nc3 Ng4 6.e3 c6 7.h3 Nh6 8.Ne4 b6?? 9.Nf6 gf6 10.d4 ed4 11.Nd4 a6 12.Nc6! dc6 13.Bf6 Rg8 14.Qd8 1–0. PassedPawn – monas, ChessWorld.net, 2005.

5.Be2 Nh6 6.Nf3 Bg4?? (6...Bd6 7.c4 dc4 8.Bc4=) 7.0-0?? (better is 7.Be5 Qg6 8.Bc7+-) 7...Bf3 8.Bf3 Qb6? (better is 8...c6+=) 9.Be5+- (< 9.Bd5 Nd7 10.Nc3 0-0-0+-) 9...0-0 10.a4 Nd7 11.Bb2 c6 12.Be2 cb5 13.ab5 f6 14.c4 d4 15.ed4 Bd4 16.Bd4 Qd4 17.Nc3 Rae8 (17...Nb6 18.Na4+/-) 18.Rc1 (better is 18.Bf3!?+-) 18...Ne5+/- 19.d3 Qh4 (19...Nhf7 20.Nd5+/-) 20.f3 (20.d4 Nef7+-) 20...g5? (20...Qd4 21.Kh1+=) 21.Qe1 (better is 21.d4!? Ng6 22.g3+-) 21...Qd4+/- 22.Kh1 Nf5 23.Qf2 Ne3 24.Ne4 Nd3 25.Qg1?? (better is 25.Bd3 Qd3 26.Rfe1+-) 25...Nc1–/+ 26.Rc1 f5 27.Ng5?? (better is 27.Rd1 Qe5 28.Qe3 fe4 29.Qa7=+) 27...Qd2–+ (28.c5 Qe2–+) 0–1. valpa – pytolo98, HCL–C1845 playchess.de, 2003.

5.Ne2 d4 6.f4 g5 (better is 6...Ne7=) 7.fe5+- Qe5 8.ed4 Qe7?? (8...Qf6 9.Nbc3 Bb6 10.Nd5+-) 9.c4 (better is 9.dc5 Nf6 10.Bd4+-) 9...Bb6 (9...Bb4 10.Qa4 b6 11.c5+-) 10.Ba3 (10.Qa4 c6+-) 10...c5? (10...Qd8 11.c5 Ba5 12.Qa4+/-) 11.d5?? Nf6 12.d4?? Bg4?? 13.h3?? Ne4–+ 14.hg4? Qf6?? 15.Nbc3?? Ba5 16.Rc1?? Qf2 0–1. Turm87@ – Gregor123, mySchach.de, 2004.

5.Ne2 Nh6 6.Nf4 d4 7.Nd3 =.

5.Qf3 =.

5.Nf3 b6 6.Be5 Qe7 7.Bg7 Nf6 8.Bh8 Bg4 9.Be2 Nbd7 10.0-0 Nf8 11.d4 Bd6 12.Nh4 Ng6 13.Ng6 Qe6 14.Bf6 Qf6 15.Bg4 Qg6 16.Qf3 Qe4 17.Qe4 de4 18.Bf5 h5 19.Be4 Rd8 20.a3 Ke7 21.Nd2 h4 22.h3 Kf6 23.Nf3 Re8 24.Bd5 Rh8 25.c4 Be7 26.Ne5 Bd6 27.Nf7 Rf8 28.Nd6 1–0. hal1958 – bajubiru, playchess.de, 2002.

5.Nf3 Nd7 6.Nc3 Qg6 (better is 6...Ne7!?=) 7.Nd5+/- Qd6 (7...Bd6 8.Ba3+/-) 8.Bc4 c6 (8...Ngf6 9.Nf6 Qf6 10.0-0+/-) 9.bc6 (9.Nf4 Ngf6 10.bc6 ef4 11.cd7 Nd7 12.ef4 0-0+/-) 9...bc6 10.Nc3 Ba3 (10...Rb8!? 11.Ne4 Qe7+/-) 11.Ne4 (11.Ba3 Qa3 12.Ng5 Nh6+/-) 11...Qb4 12.Bf7?? (better is 12.Ba3 Qa3 13.Rb1+-) 12...Kf7=+ 13.Nfg5 (13.Be5 Qe7 (< 13...Ne5 14.Ne5 Ke6 15.Ng5 Ke5 16.Nf7 Ke6 17.Nh8+/-) 14.d4 Ngf6 (< 14...Ne5 15.Ne5 Ke8 16.Qh5 Kf8 17.Qf3 Ke8 18.Nc6+=) 15.Bf6 Nf6 16.Ne5 Kg8 17.Nf6 Qf6=+) 13...Kg6 14.Ba3 Qa3 15.0-0 Ba6 16.d3=+ Ndf6 17.Nf6 Nf6–/+ 18.Ne6 e4 19.Nc7 Rad8–+ 20.Ne6 Rd6 21.Nf4 Kf7 22.c4? ed3 23.Qb3 Qc5 24.Nd3–/+ Qf5 25.c5 Rd5 26.Rfd1?? Bd3 27.Qb7 Nd7 28.Qc6 Rc5 29.Qd6 Rd5 30.Qf4 (30...Qf4 31.ef4–+; 30.Qa3 a6–+). dale4 – MIGHTYKNITEY, Live Game Caissa's Web, 2005.

5.Nf3 Nd7 6.c4 =.

5.Nf3 Nd7 6.d4 e4 7.Nfd2 = (7.dc5? Qb2 8.Qd4 Qc1 9.Ke2 ef3 10.Kf3 f6–+).

5.Nf3 Nd7 6.Be2 Qe6 7.0-0 h6 8.a4 Ngf6 9.Ba3 Ba3 10.Na3 0-0 11.c4 dc4 12.Bc4 Qd6 13.Qb3 Nc5 14.Qc2 b6 15.d4 ed4 16.Nd4 a6 17.Rfd1 Qe5 18.Nc6 Qg5 19.Ne7 Kh8 20.Bf7 Bb7 21.Ng6 Kh7 22.f4 ½–½. cmulligan (2085) – vgomdysey (2165), net–chess.com, 2014.

5.Nf3 Bg4 6.Be2 (6.Be5 Qe5 7.Ne5 Bd1 8.Kd1 Bd6+/-) 6...Bf3 (6...Bd6 7.h3 Be6 8.Ba3=) 7.Bf3= Ne7 (7...c6 8.0-0=) 8.d4 (8.c4 c6+=) 8...ed4 (8...e4 9.Be2= (9.dc5 Qb2 10.Qd4 Qd4 11.ed4 ef3–+)) 9.ed4 (9.Bd4 Bd4 10.Qd4 Nd7=) 9...Bb4 (9...c6 A) < 10.dc5 Qb2 11.bc6 A1) 11...Qa1?? 12.cb7 0-0 13.ba8Q+- (13.ba8N?! Nbc6+/-); A2) 11...Nbc6–/+; B) 10.0-0=) 10.c3 Bd6 11.0-0 (11.c4 c6 12.bc6 bc6 13.cd5 Nd5 14.Bd5 cd5=) 11...0-0 (11...a6 12.Na3=) 12.Nd2 (12.c4 c6= (12...dc4? 13.Bb7 Nd7 14.Ba8 Ra8 15.Qc2+-)) 12...c6 (12...a6 13.a4=) 13.bc6 (13.c4 cb5 14.cb5 a6=) 13...bc6 (13...Nbc6 14.Bc1=) 14.Re1 Ng6 (14...Nd7 15.c4=) 15.Bh5 (15.c4!? Nf4 16.Re3=) 15...Nf4=+ 16.Bf3? (16.Nb3 Na6=+) 16...Qh6?? (better is 16...Nd3 17.Rb1 Ne1 18.Qe1 Nd7–+) 17.g3 Nd3=+ 18.Qc2? Ne1–+ 19.Re1 Nd7 20.c4–/+ Bb4 21.Bc3 Bc3 22.Qc3 Nf6 23.Nb3 Qg5 24.Re5–/+ Qg6 25.cd5 cd5 26.Bd5 Nd5 27.Rd5 Qe4 28.Nc5?? Qd5–+ 29.Nd3 Rab8 30.Qa1 Qe4 31.Nc5 Rb1 (32.Qb1 Qb1 33.Kg2 Qa2–+) 0–1. makaveli1982 – Karnobat1, internet, 2007.

5.Nf3 Bg4 6.Be5 Qe5 7.Ne5 Bd1 8.Kd1 d4? (8...Bd6!? 9.Nd3 Nf6+=) 9.c3 (better is 9.Bc4!? Nf6 10.Nf7+- (10.Bf7?! Ke7+/-)) 9...de3+/- 10.fe3 Nf6 11.Be2 Ne4 12.Rf1 0-0 13.Bf3+- Ng5? 14.Bb7 Bd6 15.Nf7! Rf7 16.Rf7 Nf7 17.Ba8 Ne5 18.Ke2 Nbd7 19.Bd5 (19...Nf7 20.h3+-) 1–0. Francia,P – JAKE5, itsyourturn.com, 2004.

5.Nf3 Bg4 6.Be5 Bf3?? 7.Bf6+- Bd1 8.Bg7 Bc2 9.Bh8 f6 (9...Nd7 10.d3+-) 10.g4 (10.Nc3 d4 11.Nd5 Bd6 12.ed4 c6+-) 10...h6 (10...Be4 11.Rg1+-) 11.h4 Kf7 12.g5! hg5 13.hg5 fg5 14.Nc3 Ne7 15.Be5 c6 16.Rh8 Ng8 17.Bh3 a6 18.Rc1 Bd3 19.Nd5! b6 20.Nc7 Ra7 21.Be6 Kf8 22.Rg8 Ke7 23.Re8 1–0. Kleinke – Kurzke, corr, 1978.

5.f4 Nd7 =+.

5.Nc3 c6 6.Ne4 Qe7 7.Nc5 dc5 8.Qh5 (8.Nf3 Nd7+-) 8...Nd7 9.bc6 bc6 10.Nf3 Rb8 11.Bc3 (11.Be5? g6 12.Qg5 Qg5 13.Ng5 Ne5–+) 11...Ngf6 12.Qg5 0-0 (12...e4 13.Nh4 (13.Qg7? Rg8 14.Qh6 Rg6–+) 13...g6 14.Bc4+=) 13.Ne5+- (13.Be5?! Rb4=) 13...Ne5 (13...h6 A) 14.Nc6? Qd6 (14...hg5? 15.Ne7 Kh8 16.f3+-) 15.Qg3 Qc6–+; B) 14.Qg3 Ne5 15.Qe5 (worse 15.Be5 Nh5 16.Bd6 Ng3 17.Be7 Nh1–/+) 15...Qe5 16.Be5+-) 14.Be5 (better 14.Qe5 Be6 15.Bd3+-) 14...Rb5?? (better 14...h6 15.Bf6 Qf6 (15...hg5?? 16.Be7 Re8 17.Bc5+-) 16.Qf6 gf6+-) 15.Bb5+- cb5 16.0-0 Re8 (16...Bd7 17.Bf6 Qf6 18.Qc5+-) 17.Bf6 Qf6 18.Qc5 Qg6 (18...Qf5 19.Qa7 Qc2 20.Qd4+-) 19.Qb5 (19.Qb5 Qe6 20.Rfb1+-) 1–0. GuestNTFH – GuestVFVD, freechess.org, 2020.

5.Nc3 c6 6.Ne4 Qg6 7.Nc5 dc5 8.Be5 cb5 9.Bb5 Bd7 10.Bd3 (10.Be2 Nf6+/-) 10...Qg2+= 11.Qf3 Qf3 12.Nf3 Nc6?? (better 12...f6 13.Bd6 Bc6+=) 13.Bg7+- (13.Bg7 Bg4 14.Nh4+-) 1-0. GuestGKNZ – GuestZBJW, freechess.org, 2020.

5.Nc3 c6 6.Nf3 Bf5 7.Bd3 Ne7+=.

5.Nc3 Nd7 6.Nd5+= Qd8 7.d4 ed4 8.ed4 Bb6 9.Bd3 Ngf6 10.Qe2 Kf8 11.Ne3 Kg8 12.Nf3 d5 13.0-0 Ne4? (better 13...a6+/-) 14.Nd5+- Nef6 (14...Nd6+-) 15.Ne7 (15.Nb6?! Nb6 16.Rfe1 Bg4+-) 15...Kf8 16.Ba3 (16.Nc8?! Rc8 17.Bc4 c5 18.Bf7 Qe7+-) 16...g6 (16...Bc5 17.dc5 Qe7 18.Qe7 Ke7 19.c6 Kd8+-) 17.Nc6 Kg7 18.Nd8 Rd8 19.Qd2 Nd5 (19...a6 20.ba6 ba6 21.c4+-) 20.Bc1 (20.c4!? N5f6 21.c5 Nd5+-) 20...N7f6 (20...c6 21.c4 N5f6 22.Qh6 Kg8 23.Qh4+-) 21.Qh6 (21.c4!? Bg4 22.Be2 Bf3 23.Bf3 a6+-) 21...Kg8 22.Qh4 Rd6 (22...Bg4 23.c4 Bf3 24.cd5 Bg2 25.Kg2 Nd5 26.Bc4+-) 23.c4 Nb4 (23...Bg4 24.Ba3 Nf4 25.Bd6 cd6 26.h3 Nd3 27.hg4+-) 24.c5 Re6 25.Bc4 Nc2 26.Bh6 Ne8 27.Qd8 Na1 28.Be6 Be6 (28...Bd7 29.Qe7 Nd6 30.Qf6 Be6 31.Qg7) 29.Qa8 (29.Ra1?! Rd8 30.cb6 ab6=) 29...Bd7 30.Ne5 Bb5 31.c6 Bc6 32.Nc6 Bd4 (32...Bc5 33.Qe8 Bf8 34.Qf8) 33.Qe8 1-0. DEFFM – MakaKing, freechess.org, 2020.

5.Nc3 Qe6 =.

5.c4 Ne7 6.Nc3 Bf5 (6...Bb6 7.Nf3=) 7.d3 (7.Nge2 Nd7=) 7...Bb4 (7...a6 8.a4=+) 8.g3 (8.a3 Ba5=) 8...e4 (better is 8...Nd7=+) 9.Bg2?? (better is 9.Qb3 c5 A) 10.de4? Be4 11.0-0-0 Bc3 12.Bc3 Qf2 13.Bg7 Rg8–+ (13...Bh1?! 14.Nh3 Qh2 15.Bh8–/+); B) 10.a3+=) 9...Bc3–+ 10.Bc3 Qc3 11.Kf1 0–1. Mangold,Tanja – Hess,Tanja, Wolfstein RLPF–ch U20 Girls, 1994.

5.Bc4 Qg6 6.Bf1 =+.

5.Bc4 Nh6 6.g3 (6.Nc3 Qg6=) 6...Bg4 (6...Nd7 7.Nc3=+) 7.f3 Be6 8.Be6 Qe6 9.h3 (9.Ne2 0-0=+) 9...Nf5 10.Ne2 Qg6 (10...0-0–/+) 11.Rg1? (11.Nbc3 A) < 11...Ng3 12.Rg1 Ne2 13.Rg6 Nc3 A1) < 14.dc3 hg6 (< 14...fg6 15.Qd5 c6 16.Qe6 Kd8 17.c4+=) 15.Qd5 c6–/+ (15...Be3?? 16.Qb7 Ke7 17.Qa8+-; 15...Rh3?? 16.Qb7 Nd7 17.Qa8 Ke7 18.Qc6+-); A2) 14.Re6 fe6 15.Bc3+/-; B) 11...Bb6=) 11...a6 (11...Be3!? 12.de3 Ne3 13.Qd3 Nc2 14.Kd2 Na1 15.Qg6 hg6 16.Nbc3–+) 12.Nbc3 (better is 12.g4 Nh4 13.Rg3–/+) 12...e4?? 13.f4?? 0-0 14.Nd5+= Nd7?? 15.Nc7 Rac8=+ 16.Nd5 ab5?? 17.g4+- Nh4 18.Ne7 Kh8 19.Ng6 fg6 20.Nc3 Nf3 21.Ke2 Nf6 22.Nb5 d5 23.Bf6 gf6 24.a4 Rf7 25.a5 Rc6 26.c3 Kg7 27.d4 Bf8 28.f5 g5 29.h4 Nh4 30.Rh1 h6 31.Rh4 gh4 32.g5 hg5 33.Kf1 Kh6 34.Ra2 Rh7 35.Rh2 Kg7 36.Qg4 Rh6 37.Na7 Rc3 38.Nb5 Rb3 39.Nc7?? Bd6?? 40.Ne6 Kh7 41.Ng5?? fg5= 42.Qg5?? Bh2?? 43.Qe7+= Kg8? 44.Qe8?? Kh7 45.Qf7+= Kh8 46.f6 Rb1 47.Kg2 Rb2?? 48.Kh3+- Bg3 49.Qg7 1–0. solidsteelpipe – SAV, Live Game Caissa's Web, 2005.

5.d4 Bb4 6.c3 Ba5 7.Nd2 ed4 8.ed4 Ne7 9.Be2 Nd5 10.Qc2 Bf5 11.Bd3 Bg4 (11...Qe6 12.Kd1 Bd3 13.Qd3=) 12.f3 (worse is 12.Bh7 g6 13.Nb3 Bb6 (13...Rh7?! 14.Na5 Qe7 15.Kf1+=) 14.Qe4 Qe6 15.Qe6 Be6–+ (15...fe6? 16.Bg6 Kd7 17.Be4+-)) 12...Bh5 13.Ne2 (13.Nc4 Bb6+=) 13...Qg5 (13...Ne3 14.Qb3 Ng2 15.Kf2–/+) 14.Ng3 (better is 14.Nc4!? Bb6 15.0-0+=) 14...Ne3+= 15.Qb3 Ng2 16.Kd1 0-0 17.Kc2 Qe3?? (better is 17...Bg6!? 18.Nge4 Qe3–/+) 18.Rad1?? (better is 18.Nh5 Qg5 19.Ng3+-) 18...Bf3 19.Rdf1 Nf4?? (better is 19...Nh4 20.Rhg1 Bg2=) 20.Rf3+- Qe6 21.Rf4 Qe3 (21...Qd7 22.Rg1 g6 23.Nge4+-) 22.Rf3 Qg5 23.Nde4 Qe7 24.Kb1 Nd7 25.Nf5 Qd8 26.h4 g6 27.Nh6 Kg7 28.Bc1 f5 29.Ng5 Qe8 30.Ne6 Kh8 31.Nf8 Qf8 32.Nf7 Kg7 33.Bc4 c5 34.Bh6 Kg8 35.Bf8 Kf8 36.Nd6 Bc7 37.Bg8 Bd6 38.Qf7 1–0. Mphilliber – Pekin Dragons, ChessWorld.net, 2011.

5.d4 Bb6 6.Nd2 ed4 7.Ngf3 Ne7=.

5.d4 Bb6 6.de5+- de5 7.Nf3 Nd7 8.Bd3 (8.Nc3 Qe6 9.Nd5 Ba5 10.c3 Ngf6+=) 8...Qe6 (8...Qe7!?=) 9.0-0 h6 10.Nbd2 Ngf6 11.Bc4 (11.Nh4 0-0+=) 11...Qf5 (11...Qe7 12.Nh4+-) 12.Nh4 (12.e4!? Qg4 13.Be5+-) 12...Qg5+= 13.Nhf3 Qf5 14.Ba3 (better 14.e4!? Qg6 15.Be5+-) 14...Bc5= 15.Nh4 Qg5 16.Nhf3 Qh5 (16...Qf5!? 17.Bc5 Nc5=) 17.Bb2+= Bd6 18.Be2 e4 19.Ne5 Qh4 (19...Qg5!? 20.Nec4 Be7+=) 20.g3+- Qh3 (20...Qg5 21.Nd7 Bd7 22.Bf6 Qf6 23.Ne4+-) 21.Nd7+- Nd7?? (better 21...Bd7 22.Bf6 gf6 23.Ne4 Be5+-) 22.Bg4 (22.Bg4 Qf1 23.Kf1+-) 1–0. GuestCJFB – deepchand, freechess.org, 2020.

5.d4 Bb6 6.g3 c6 (6...a6 7.Nd2=+) 7.a4 Ba5 8.Bc3 Bc3 (8...Bc7 9.Bg2=) 9.Nc3 ed4 (9...Bf5 10.Bg2=) 10.ed4 (10.Ne4 Qg6 11.Qd4 d5 12.Qe5 Kd8 13.Qd6 Nd7 14.Qg6 hg6=) 10...cb5 (10...Bf5 11.Nge2=) 11.Nb5 (11.Bb5 Nc6+=) 11...Na6 12.Bg2 (12.c4 Ne7=) 12...Nh6 13.Qe2 Be6?? (better is 13...Kd8 14.Ra3 Nf5=+) 14.Bb7+- (14.Nd6?! Ke7 15.Nb5 Rhb8+/-) 14...Rb8? (14...0-0 15.Ba6 Bd5 16.Nc7 Bh1 17.Na8 Ba8 18.c3+/-) 15.Ba6 0-0 16.Nd6 Rb6?? 17.Ne4 Qd4 18.Ra3 Rb1 (19.Qd1 Qd1) 0–1. Andy HB – ChessNo1, ChessWorld.net, 2005.

5.d4 ed4 6.ed4 Bb6 7.Nf3 Ne7 8.Bd3 Bg4 9.Nbd2 0-0 10.0-0 Nd7 (10...d5 11.c4=) 11.Ne4 White gets in control 11...Qh6 12.Neg5 Nf6 13.Re1 Ned5 14.c4 Nf4 15.Bc2 Ba5 16.Re3 Ne6 (16...Rfe8 17.Bc1 Qg5 18.Ng5 Bd1 19.Bd1-/+) 17.Ne6 fe6 18.h3 Bf3 19.Rf3 (worse 19.Qf3 Nd5 20.Re6 Qe6 21.Qd5 Qd5 22.cd5 Rae8-/+) 19...Bb6 20.a4 a5 21.Qe2 Nh5 (21...Rae8 22.Re1+/-) 22.Re1 Nf4 23.Qe4 e5 (better 23...d5!? 24.Qe5 Qf6 25.Qf6 Rf6+/- (25...gf6?? 26.Rf4 Kf7 27.Rh4+-)) 24.c5!+- dc5 (24...Bc5 25.dc5) 25.dc5 Bc5 26.Qc4 (26.Qe5?! Bd6 27.Qe4 Rab8+/-; 26.Qb7 Qg5 27.Rf4 ef4+-) 26...Ne6 27.Bc1 g5 28.Re5 Rf3 29.gf3 Re8 (29...Qh3 30.Rc5 (30.Re6?! Qg3 31.Kh1 Qh3 32.Kg1 Qg3 33.Kh1 Qh3 34.Kg1=) 30...Re8 31.Rg5 Kf8 32.Bf5 Ng5 33.Bh3 Nh3 34.Kg2+-) 30.Rg5 Kh8 (30...Qg5 31.Bg5 Kf8+-) 31.Bb2 Nd4 32.Bd4 (32.Rc5?? Re1 33.Qf1 Qg7 (33...Rf1? 34.Kf1 Qh3 35.Kg1+-) 34.Bg6 Qg6 (34...Rf1?! 35.Kf1 hg6 36.Rc4-/+) 35.Kh2 Rf1 36.Bd4 Kg8-+; 32.Qc5 Re1 33.Kg2 Qh3 34.Kh3 Rh1 35.Kg2 Rg1 36.Kg1 c6 37.Bd4) 32...Bd4 33.Qd4 Qg7 (33...Re5 34.Qe5 Qf6 35.Qf6) 34.Qg7 1-0. DEFFM – MakaKing, freechess.org, 2020.

5.d4 ed4!? 6.Nf3 Ne7=.

5.e3 Bg4 6.Be2 Nh6 7.0-0 Nd7 8.d4 ed4 9.ed4 Bb6 10.a4 a6 (10...Ba5!?+=) 11.a5+/- Ba7 12.ba6 ba6 13.Nc3 Rb8 (13...0-0 14.Nd5 Qd8 15.Ba6+/-) 14.Nd5 Qd8 15.Bc3 0-0 16.Nb4 Rb4 (16...Qf6 17.Na6 (worse 17.Ba6 Bf3 18.Qf3 Qf3 19.gf3 Bd4 20.Bd4 Rb4+/-) 17...Rbc8 18.Nb4+-) 17.Bb4+- Re8 18.Ba6 Nf5 19.c3 (19.Bc3 Bf3 20.Qf3 Nd4+-) 19...Nh4 20.Bb7 Qf6 (better 20...c5 21.Ba3 cd4 22.cd4 Bf3 23.Bf3 Nf3 24.Qf3 Bd4+-) 21.Qa4 Bf3 (21...Rb8 22.Nh4 Rb7 23.h3 Qh4 24.hg4+-) 22.Bf3 (better 22.Qd7 Rd8 23.Rfe1+- (23.Qc7?! Bg2 24.Bg2 Qg5 25.Qd8 Qd8+-)) 22...Nf3 23.gf3 Re7 24.Qc6 Nf8 25.Kh1 Ne6 26.Qa8 Nf8 27.Rae1 (better 27.Rfd1+-) 27...Qf3?? (27...c5 28.dc5 dc5+-) 28.Qf3 Rd7 1-0. DEFFM – guestbanjar, freechess.org, 2021.

5.Nf3 Ne7!?= 6.Nc3 A) 6...Bb4 7.Bc4 (7.a3 Bc3 8.Bc3 Bg4 9.h3 Bf5 10.d3=; 7.Ne4 Qg6 8.Ng3 Be6 9.c3 Ba5 10.e4=; 7.Bd3 d5 8.0-0 Bd6 9.Be2 0-0 10.a4+=; 7.Be2 0-0 8.0-0 Bf5 9.a3 Bc3 10.Bc3=) 7...Bg4 8.Ne4 Qg6 9.Ng3 e4 10.h3=; B) 6...Bf5 7.Bc4 (7.d4 ed4 8.Nd4 Bd4 9.Qd4 Qd4 10.ed4=; 7.a3 Nd7 8.d4 Bb6 9.Bc4 e4 10.Nd2+=; 7.Be2 0-0 8.0-0 Re8 9.d4 Bb4 10.Qd2=; 7.Na4 Bb4 8.Rb1 Ba5 9.Bc3 Bc3 10.Nc3+=) 7...0-0 8.0-0 a6 9.d4 ed4 10.ed4=.

5.Nf3 Ne7!?= 6.Bc4 A) 6...Nd7 7.d4 ed4 8.Bd4 Bd4 9.Qd4 Ne5 10.Ne5=; B) 6...Qg6 7.d4 (7.Rg1 e4 8.Nd4 d5 9.Be2 Bd6 10.g3+=) 7...ed4 8.ed4 Bb4 9.c3 d5 10.Bd3=; C) 6...Bg4 7.Nc3 (7.Be2 0-0 8.0-0 a6 9.Nc3 Bb4 10.Ne4+=; 7.Bb3 Nd7 8.h3 Bh5 9.Nc3 e4 10.g4+=) 7...Bb4 8.Ne4 Qg6 9.Ng3 e4 10.h3=; D) 6...Be6 7.Be6 fe6 8.d4 ed4 9.ed4 0-0 10.c4=; E) 6...0-0 7.Nc3 (7.0-0 Bg4 8.Nc3 e4 9.Nd5 Qb2 10.Rb1+=; 7.d4 e4 8.Nfd2 d5 9.Nc3 Qg5 10.Nde4=; 7.d3 a6 8.d4 e4 9.Nfd2 ab5 10.Ne4+=) 7...Qg6 8.Bd3 f5 9.Bc4 Be6 10.Be6=.

5.Nf3 Ne7!?= 6.d4 e4 7.Nfd2 d5 8.c4 c6 9.bc6 bc6 10.Nc3 +=.

5.Nf3 Ne7!?= 6.Be2 A) 6...a6 7.d4 (7.Nc3 Bb4 8.Ne4 Qg6 9.Ng3 0-0 10.a3+=; 7.0-0 0-0 8.Nc3 Bf5 9.d4 ed4 10.Nd4=; 7.a4 0-0 8.0-0 Re8 9.d4 e4 10.Ne5=; 7.Bc3 Nd5 8.0-0 ab5 9.Bb5 c6 10.d4+=) 7...Bb4 8.c3 Ba5 9.ba6 b6 10.0-0=; B) 6...Be6 7.d4 (7.Nc3 e4 8.Na4 Qg6 9.Nh4 Qg5 10.Nc5=; 7.0-0 Nd7 8.d4 e4 9.Nfd2 d5 10.f3=) 7...e4 8.Nfd2 d5 9.c4 Bb4 10.cd5=; C) 6...0-0 7.0-0 (7.Nc3 Bb4 8.0-0 Bf5 9.a3 Bc3 10.Bc3=; 7.d4 ed4 8.0-0 a6 9.Bd4 Bd4 10.Qd4=) 7...Bf5 8.d4 e4 9.Nfd2 Bb4 10.c3=; D) 6...Bf5 7.d4 (7.0-0 Nd7 8.d4 Bb6 9.c4 0-0 10.a4=; 7.Nc3 0-0 8.0-0 Re8 9.d4 ed4 10.Nd4=; 7.d3 a6 8.Nc3 Bb4 9.0-0 Bc3 10.Bc3+=; 7.a3 Nd7 8.d4 Bb6 9.0-0 0-0 10.c4=; 7.Bc4 a6 8.Nc3 0-0 9.d4 Bb4 10.ba6+=; 7.Qc1 Nd7 8.0-0 d5 9.d4 Bd6 10.de5=) 7...e4 8.Nfd2 Bb6 9.c4 Qg6 10.g4=; E) 6...Bg4 7.Nc3 (7.0-0 0-0 8.d4 ed4 9.Nbd2 Nf5 10.ed4=) 7...Bb4 8.Ne4 Qg6 9.Ne5 de5 10.Bg4+/-; F) 6...Nd5 7.0-0 (7.c4 Ne7 8.0-0 0-0 9.d4 ed4 10.ed4+=; 7.Nc3 Nc3 8.Bc3 a6 9.0-0 ab5 10.Bb5+=; 7.d4 ed4 8.Nd4 0-0 9.0-0 Re8 10.Nd2=) 7...Be6 8.d4 ed4 9.Nd4 Bd4 10.Bd4+=; G) 6...Qg6 7.Nc3 (7.Rg1 0-0 8.d4 ed4 9.Nd4 Nf5 10.Nb3+=; 7.0-0 e4 8.Ne1 0-0 9.f3 d5 10.Be5=; 7.g3 0-0 8.d4 ed4 9.Nd4 a6 10.Bd3+=) 7...e4 8.Nh4 Qh6 9.g3 d5 10.f3=.

5.Nf3 Bf5 6.d4= Bb4 (6...e4!? 7.Bc3 Bb6=) 7.c3+/- Bb1 8.cb4 e4 (8...Be4 9.de5 Bf3 10.ef6 (10.gf3?! de5 11.Qd5 Nd7+/-) 10...Nf6 11.Qf3+-) 9.Qb1 (9.Rb1?! ef3 10.Qf3 Qf3 11.gf3 Nf6+/-) 9...ef3 10.Qe4 Kd7 11.Qb7 fg2 12.Bg2 (12.Qa8?! gh1R 13.Qh1 Ne7+-) 12...Qd8 (12...Ne7 13.Qa8 Qf5 14.Qa7 Qb5 15.Qa5 Qa5 16.ba5+-) 13.a3 (13.Qa8!? Nf6+-) 13...Na6 14.Qc6 Ke7 15.Qe4 Kf8 16.Qa8 Nb8 17.Qa7 (17.Qa7 Ke8 18.Rc1+-) 1–0. Taulien,Hans_Juergen (2225) – Luginbuel,Daniel (1740), remoteschach.de, 2003.

5.Nf3 Qh6 6.d4+= ed4 7.ed4 Bb6 8.a4 (8.Bc4 Ne7+=) 8...a5 (8...Ba5 9.Nbd2=) 9.Bc4 Nf6 10.Qe2 Be6? (10...Kd8 11.Bf7 Rf8 12.Qc4+=) 11.Be6 (better 11.d5!? Nd5 12.Bd5+-) 11...0-0+- 12.Bf7 (12.0-0 Re8 13.Bf7 Kf7+-) 12...Rf7 13.0-0 Nbd7 14.Nc3 Raf8 (14...Qg6 15.Rae1+-) 15.Qd3 Ng4 16.Bc1 (better 16.Qe4!? Rf3 17.Qg4+-) 16...Qh5=+ 17.h4 Rf3 18.gf3 Nge5 (better 18...Qh4 19.fg4 Qg4 20.Qg3 Qg3 21.fg3 Bd4 22.Kg2 Rf1 23.Kf1 Bc3=+) 19.de5+- Ne5 20.Qe4 Nf3 21.Kh1 Nh4 (better 21...Kh8 22.Ne2 d5+-) 22.Qd5 Qd5 23.Nd5 1–0. onur604 (2320) – SereneMystery (2050), lichess.org, 2020.

5.Nf3 Nh6 6.d4 Bb4 (better 6...ed4!? 7.Nbd2 Nd7=) 7.c3+- Ba5 8.de5 de5 9.Bd3 (9.Nbd2 Nd7+-) 9...0-0 (9...Bf5 10.Bf5 Nf5 11.Nbd2+=) 10.0-0 (10.Qa4 Bb6 11.Nbd2 Nd7+=) 10...Rd8+= 11.Qc2 Bf5 12.e4 Bg4 (12...Bg6 13.Bc1 Qd6 14.Be2+=) 13.Nbd2 a6 14.a4 (better 14.h3 Be6 15.a4 ab5 16.ab5+=) 14...Qg6? (better 14...ab5 15.ab5 Nd7+=) 15.Ne5+- Qg5 (15...Qe6 16.h3 Bh5 17.Nb3 Qe5 18.Na5+-) 16.Ndc4 Bh3 (16...Bb6 17.Bc1 Qh5 18.Bh6 gh6 19.Ng4 Qg4+-) 17.f4 Qf6 (17...Qg2 18.Qg2 Bg2 19.Kg2+-) 18.gh3 (better 18.Na5 ab5 19.ab5 Ra5 20.Ra5 Qb6 21.Qf2 Qa5 22.Ra1+-) 18...Qh4 (18...Bb6 19.Kg2 ab5 20.ab5 Ra1 21.Ba1 Qe7+-) 19.Na5 ab5 (19...Nd7 20.Nd7 Rd7 21.ba6 ba6 22.Nc4+-) 20.Nb7 Re8 21.Bb5 (better 21.Qd2 ba4 22.Bb5 Rc8+-) 21...Re5 22.fe5 Qh3 23.Rad1 f6 24.Qb3 Kf8 (24...Qe6 25.Qe6 Kh8 26.Rd8 Ng8 27.Rg8) 25.Ba3 c5 26.Bc5 1–0. GuestLVKD – khetra, freechess.org, 2020.

5.Nf3 Nh6 6.Be2 Qg6 7.0-0 Bd7 (7...Bh3! 8.Ne1 Nd7=) 8.d4+/- ed4 9.ed4 Bb6 10.Re1 (10.Bd3 Nf5+/-) 10...0-0+= 11.Nbd2 (11.Bd3 Qf6+=) 11...c6 (11...Bh3 12.g3=) 12.a4 Bd8 13.Bd3 Qf6 (13...Bf5 14.Bf5 Nf5 15.c4+=) 14.c4 (14.Ne4 Qf4 15.Bc1+-) 14...Ba5 15.Qc2 Bf5 16.d5?? (better is 16.Ne4 Qd8 17.Re2+/-) 16...Bd3–+ 17.Bf6 Bc2 18.Be7 Re8 (18...Rc8 19.Bd6 cd5 20.cd5–+) 19.Bd6–/+ Re1 20.Re1 Nd7 21.dc6 bc6 (21...Ba4?? 22.cd7 f6 23.Re8 Kf7 24.Ra8+-) 22.bc6 Nf8 23.c7 Ba4 (23...Nf5 24.c5 Ba4+=) 24.Ra1= Bd2 25.Ra4 Bc3 26.h3 (better is 26.Ra3!? Bf6 27.Rb3=) 26...Nf5–/+ 27.Ra7 Rc8 28.c5 Nd7 (28...Bb4 29.Ra4 Nd6 30.Rb4–/+) 29.Rb7 f6 30.c6 (30.Rb3 Bd4 31.Nd4 Nd4 32.Rb8 Rb8 33.cb8R (33.cb8B?! Kf7=) 33...Nb8 34.Bb8+=) 30...Nf8?? (30...Ne5 31.Be5 Be5 32.Ne5 fe5 33.Rb8–/+) 31.Bh2?? (31.Ba3 Ng6 32.Nh4 Ngh4 33.Rb8+-) 31...Ne7 32.Rb8 Ne6 33.Bd6= Kf7 34.Be7 Rc7 35.Bb4 Rc6 36.Rb7 Kg6 37.Nh4 Kh5 38.g3 Bd4 39.Nf5 Rc1 40.Kg2 Kg6 41.Nd4 Nd4 42.Bf8 Ne6 43.Ba3 Ra1 44.Bd6 Nd8 45.Rd7 Nf7 46.Bf8 Rb1 47.h4 h5 48.g4 hg4? 49.h5+- Kh5 50.Rf7 g6 51.Rf6 Rb8 52.Bc5 Rg8 53.Be3 g5 54.Kg3 Rg7 55.Rf5 Rg6 56.Rd5 Rg7 57.Rd4 Rf7 58.Rg4 Rf5 59.Rc4 Rd5 60.Rc5 (60.Rc5 Rc5 61.Bc5+-) 1–0. Istvanny (1695) – vallabhan, internet, 2007.

5.f4 Nd7 6.g3 h5 7.h3 Qg6 8.Ne2 Ngf6 9.fe5 de5 10.d4 ed4 11.Bd4 Bd4 12.Qd4 0-0 13.Nd2 Nb6 14.0-0-0 Be6 15.Kb1? (Better is 15.Nf4 Qg3 16.Ne6 fe6 17.Ne4=+) 15...Rad8 16.Nb3?? (16.Qb4 Ba2! 17.Kc1–+) 16...Rd4 17.Rd4 Bb3 18.ab3 Qf5 19.Nf4 g6 20.Bd3 Qg5 21.Rg1 h4 22.gh4 Qg1 23.Kb2 Qe3 24.Rb4 Nbd5 25.Nd5 Nd5 26.Re4 Qh3 27.Rd4 c6 28.c4 Nb4 29.Kc3 Nd3 30.Rd3 Qh4 31.b6 ab6 32.Rd7 Qf6 33.Kb4 c5 34.Kb5 Qc6# 0–1. MasterofDisaster – DanM, Live Game Caissa's Web, 2004.

5.g4 Nh6 6.h4? (Better is 6.h3!?=+) 6...Ng4 7.f4 0-0 8.c4 Bf5 9.fe5 de5 10.Qf3? e4 11.Qg4 Qb2 12.Qf5 Qa1 13.Qe4 Nd7 14.Qf5 g6 15.Qd3 Ne5 16.Qe4 Nc4?? 17.Bc4+= Rae8 18.Bf7?? Rf7?? 19.Qe8+- Kg7 20.Ke2?? Re7 21.Qd8=+ Qb1 22.a4?? Rf7–+ 23.d4 Bb4 24.Nf3 Qh1 25.Qd5–+ Qf3 26.Qf3 Rf3 27.Kf3 Kf6 28.e4 h5 29.Ke2 Ke6 30.d5 Ke5 31.Kd3 Be7 32.a5 Bh4 33.a6 b6 34.Ke3 Bg5 35.Kf3 Bf4 36.Kg2 Ke4 37.d6 Bd6 38.Kg1 g5 39.Kg2 g4 40.Kf1 Kf3 41.Ke1 g3 42.Kf1 g2 43.Ke1 g1Q 44.Kd2 Bb4 45.Kd3 Qe1 46.Kc2 Qc3 47.Kb1 Ba3 48.Ka2 Qb2 0–1. StrategicDeep 1.11 by Marcin – Gorelikov,Igor, Test PI, 2002.

6.c3 e4 7.d4 (7.Nd4 a6 8.d3 ed3 9.Bd3 Bb7 10.0-0=) 7...ed3 8.Bd3 a6 9.Qc2 ab5 10.c4 +=.

6.Nc3 A) 6...c6 7.a3 (7.bc6 Nc6 8.Nd5 Qd8 9.d4 ed4 10.Bb5+/-; 7.Ne4 Qe7 8.Nc5 bc5 9.h3 Nf6 10.a4=) 7...Bg4 8.Be2 a6 9.bc6 Ne7 10.Ne4+/-; B) 6...Bb7 7.d4 (7.Na4 Bb4 8.c3 Ba5 9.d4 Ne7 10.Be2=; 7.Bc4 Ne7 8.Na4 Bb4 9.a3 Ba5 10.Nc3=; 7.Be2 a6 8.d4 Bb4 9.0-0 e4 10.ba6=) 7...ed4 8.Nd4 Ne7 9.Na4 Bd4 10.Qd4=.

6.Bc4 a6 7.Nc3 (7.Bd5 Ra7 8.d4 ed4 9.ed4 Ne7 10.Bb3=; 7.d4 ed4 8.ed4 ab5 9.Bb5 c6 10.Qe2=) 7...ab5 8.Nb5 Qe7 9.d4 ed4 10.0-0 +=.

6.Bd3 Bb7 7.Bc4 (7.Be2 a6 8.d4 Bb4 9.c3 Ba5 10.0-0=; 7.a4 a6 8.Be2 Ne7 9.d4 Bb4 10.c3=; 7.c4 a6 8.Be2 Ne7 9.d4 Bb4 10.Bc3=; 7.0-0 a6 8.Ne1 Qe6 9.f4 ab5 10.Bb5=; 7.a3 a6 8.Nc3 ab5 9.Bb5 Nd7 10.Bc4=) 7...a6 8.d4 e4 9.Nfd2 Bb4 10.ba6 =.

6.d4+= Bb4 7.c3+- Ba5 8.de5 de5 9.Qd5 c6 10.Qe5 Qe5 11.Ne5 c5 (11...Be6 12.Nd2 a6 13.a4+-) 12.Nd2 Bb7 (12...Nd7 13.Nec4 Ngf6+-) 13.Ndc4 Nf6 (13...Ke7 14.Na5 ba5+-) 14.Nd6 Ke7 15.Nb7 Ne4 16.Na5 ba5 17.Rd1 Rd8 (17...f6 18.Nc4+-) 18.Rd8 Kd8 19.Nf7 Ke7 20.Ne5 Nd7 21.Nc6 Kf7 22.Bc4 Kf6 23.Bd5 (23.Bd5 Re8 24.c4 Kg6 25.Ke2+-) 1–0. marekt – smn53, internet, 2009.

6.d4+= ed4!? 7.Nbd2 Nd7+= (7...a6 8.Nd4 Ne7 9.Bd3 Bb7 10.0-0+=) 8.ed4 d5 9.c4 Bd6 10.cd5 +=.

6.d4+= ed4!? 7.ed4 d5 8.c4 Bb4 9.Bc3 Bd6 10.Qe2 +=.

6.d4 ed4 7.Bd4 Bd4 8.Nd4 Nd7 9.Nd2 Ne5 10.Be2 g6 11.0-0 Ne7 12.f4 Nd7 13.Bf3 Rb8 14.Nc6 Nc6 15.Bc6 (15.bc6?! Nc5=) 15...0-0 16.Ne4 Qe7 17.g4 (17.Qd4!? Bb7 18.Bb7 Rb7 19.f5+=) 17...Bb7 18.Qd4 Bc6 19.bc6 Nc5?? (better is 19...f5 20.Qc4 Kh8 21.cd7 Qe4 22.Qc3 Kg8 23.gf5 Rf5 (worse is 23...gf5 24.Kf2 Rbd8 25.Rg1 Kf7 26.Rg7 Ke6 27.Qc7+/-) 24.Qc7 Qe3 25.Rf2 Rff8+=) 20.Nf6+- Kg7 (20...Qf6 21.Qf6 Rbe8+-) 21.Nd5 (21.Ne8 Kg8 22.Qg7) 21...Qf6 (21...f6 22.Ne7 Rbe8 23.Nd5+-) 22.Nf6 (22.Qf6 Kh6 23.Rf3 Rfe8 24.Rh3) 22...Kh6 23.g5 Kg7 24.Nd7 (24.Ne8! Kg8 25.Qg7) 24...f6 25.gf6 Kf7 26.Nb8 (better is 26.Qd5 Ne6 27.f5 gf5 28.Qf5 Rg8 29.Kh1 Rg6 30.Nb8 h6+-) 26...Rb8 27.h4 d5 28.f5 gf5 29.Rf5 (29.Qd5 Ne6 30.Qf5 Rg8 31.Kh2+-) 29...Ne4 30.Qd5 Kg6 31.Qe4 Rf8 32.Rg5 Kf6 33.Rf5 Kg7 34.Qg4 Kh8 35.Rf8 1–0. cmulligan (2250) – mduerr (1800), net–chess.com, 2011.

6.Be2 A) 6...Qg6 7.Bd3 (7.0-0 e4 8.Nh4 Qg5 9.f4 ef3 10.Nf3+/-; 7.Nc3 Nf6 8.d4 Bb4 9.0-0 e4 10.Ne1=) 7...Qh5 8.0-0 a6 9.Be2 Qg6 10.d4+/-; B) 6...a6 7.d4 (7.Nc3 ab5 8.Nd5 Qd8 9.d4 Ba3 10.Ba3=; 7.a4 Ne7 8.d4 ed4 9.Nd4 0-0 10.0-0=; 7.ba6 Ba6 8.d4 ed4 9.ed4 d5 10.Nc3=) 7...ed4 8.ed4 Bb4 9.c3 Ba5 10.0-0=.

6.Nc3 Bb4 7.Ne4 (7.Bd3 Bc3 8.Bc3 Nd7 9.Be2 Ne7 10.0-0=+; 7.a3 Bc3 8.Bc3 Ne7 9.e4 Qf4 10.d3=; 7.Be2 Ne7 8.0-0 Nd7 9.d4 0-0 10.Qd3=) 7...Qg6 8.Neg5 Bf5 9.c3 Ba5 10.Bc4 =.

6.Nc3 Bb6 7.d4 (7.Ne4 Qg6 8.Neg5 Bf5 9.Bc4 Nh6 10.d3+=; 7.Bd3 Ne7 8.Ne4 Qh6 9.a4 Ba5 10.0-0=; 7.Be2 e4 8.Na4 Qg6 9.Nh4 Qh6 10.Nb6=; 7.a4 Ba5 8.Bd3 Nd7 9.Ne4 Qh6 10.Neg5=) 7...Nd7 8.Bd3 ed4 9.Ne4 Ba5 10.Nfd2 =.

6.Nc3 Nd7 7.Ne4 (7.d4 Bb4 8.a3 Bc3 9.Bc3 e4 10.Nd2+=; 7.a3 Ne7 8.d4 ed4 9.Nd4 Bd4 10.Qd4=) 7...Qf5 8.Bd3 Qg4 9.h3 Qh5 10.Nfg5 +=.

6.Nc3 Qe7 7.d4 (7.Be2 Nf6 8.d4 Bb4 9.de5 de5 10.a3=; 7.Ne4 Nd7 8.d4 Bb4 9.c3 d5 10.Neg5=) 7...ed4 8.Nd4 Bd4 9.Qd4 Nf6 10.Bd3 +=.

6.d4 Bb4 7.c3 Ba5 8.de5 de5 9.Qa4 Bb6 10.Qe4 +=.

6.d4 e4 7.Bc3 Bb6 8.d5 Ba5 9.Ba5 Qa1 10.Bc3 +/-.

6.d4 e4 7.dc5? Qb2 8.Qd4 Qc1 9.Ke2 ef3 10.Kf3 Nf6 –+.

6.d4 e4 7.Nfd2 d5 8.c4 Bb4 9.a3 Bd2 10.Nd2 +=.

6.Nc3 Ne7 7.Ne4+= Qf5 8.Bd3 Bf3 9.gf3 Qh5 (9...Qe6!? 10.Rg1 Nd7+=) 10.Nc5+/- dc5 11.f4 Qd1 12.Kd1 ef4 13.Bg7 Rg8 14.Rg1 (14.Bh6 fe3 15.Be3 h5+-) 14...fe3+/- 15.fe3 Nd7?? (better is 15...Ng6 16.Be5! c6+/-) 16.Bh7+- 0-0-0 (16...Rg7 17.Rg7 Kf8 18.Rg5+-) 17.Bg8 Rg8 18.Ke2 Nf5 19.Bb2 Rh8 (19...Re8+-) 20.Bh8 (20.Bh8 Kd8 21.Rg8 Ke7 22.Ra8+-) 1–0. pierre – opporq, internet, 2010.

6.Nc3 Bf3 7.gf3 Nd7 8.Rg1 =.

6.Bc4 A) 6...Ne7 7.Nc3 Bb4 8.Ne4 Qg6 9.Ng3 0-0 10.c3=; B) 6...c6 7.Be2 a6 8.bc6 Nc6 9.Nc3 Qg6 10.Nh4=; C) 6...Bf3 7.Qf3 Qf3 8.gf3 Nf6 9.Rg1 Rg8 10.Nc3=; D) 6...Qf5 7.d4 Bf3 8.Qf3 Qf3 9.gf3 ed4 10.Rg1=; E) 6...Qg6 7.d4 ed4 8.ed4 Bb4 9.c3 Ba5 10.0-0+=; F) 6...Nd7 7.Bd5 0-0-0 8.h3 Bh5 9.g4 Bg6 10.g5=+.

6.Be2 Nd7 7.0-0 0-0-0 8.Nc3 e4 9.Nd4 Be2 10.Nde2+=.

6.Be2 Nd7 7.0-0 h5 8.d4 Bf3? (better 8...ed4 9.Nbd2 Ne7+-) 9.Bf3+- (worse 9.gf3 ed4 10.Bd4 Qh4=+) 9...Bb6 (9...ed4 10.ed4 Ne7 11.c3+- (11.dc5?! Qb2 12.cd6 Qa1 13.de7 Rb8+-; 11.Bb7?! Rb8 12.Bc6 Nc6 13.bc6 Nf8+-)) 10.Bb7 (10.a4 a5 11.Bb7 Rd8+-) 10...Rb8 11.Bc6 Ne7 (11...Qe6 12.a4 Ba5 13.Nd2 Bd2 14.Qd2+-) 12.de5 (12.Bd7 Kd7 13.de5 Qe6+-) 12...Qg6 (12...Qe6 13.ed6 cd6 14.Nc3 Nc6 15.bc6+-) 13.Bd7 Kd7 14.c4 (14.Nd2 Ke8 15.Nc4 d5+-) 14...Bc5 (14...h4 15.h3+-) 15.Nd2 (15.Nc3 h4+-) 15...Ke8 16.Qa4 de5 (16...h4 17.h3+-) 17.Be5 (better 17.Nb3 Qb6 18.Be5 f6+-) 17...Bb6 (17...h4 18.h3+-) 18.c5! Bc5 19.b6 (19.Rac1!? Bb6 20.Bc7 Bc7 21.b6 Kf8 22.bc7 Ra8+-) 19...Qc6 20.ba7 Ra8 (20...Rd8 21.Qc6 Nc6 22.Bg7 Rg8+-) 21.Qc6 Nc6 22.Rac1 (22.Rfc1 Ne5 23.Rc5 Nc6 24.Rc6 Ra7+-) 22...Be3 (22...Ne5 23.Rc5 Nd7 24.Rc7+-) 23.Rc6 Bd2 (23...Rh6 24.Rc7 Bb6 25.Rb7 Ra7 26.Bg7+-) 24.Rc7 f6 (24...Kf8 25.Rb1 Kg8 26.Rb8 Kh7 27.Rf7 Rhb8 28.ab8R Rb8 29.Bb8 Kg6+-) 25.Rb1 fe5 (25...Rd8 26.Rb8 fe5 27.Rd8 Kd8 28.Rg7 Kc8 29.a8Q) 26.Rb8 Rb8 27.ab8Q (27.ab8B?! Rh6 28.Rc8 Ke7 29.Be5 Re6 30.Rc7 Kd8+-; 27.ab8R?!=; 27.ab8N?! Rh6 28.Rg7 Rb6+-) 1–0. GuestBHFS – GuestNVNG, freechess.org, 2020.

6.Be2 Nd7 7.Nc3 0-0-0 8.Ne5 Be2 9.Nd7 Rd7 10.Qe2+/-; 6...Ne7 7.Nc3 (7.0-0 0-0 8.d4 ed4 9.Nbd2 Nf5 10.ed4=) 7...Bb4 8.Ne4 Qg6 9.Ne5 de5 10.Bg4+/-; 6...Be6 7.Nc3 (7.0-0 Nd7 8.d4 Bb4 9.a3 Ba5 10.Nbd2+=; 7.d4 e4 8.Bc3 Bb6 9.d5 Ba5 10.Nd4+/-; 7.Bc3 Nd7 8.d4 Bb6 9.a4 c5 10.d5+=; 7.c3 e4 8.Nd4 Bd4 9.cd4 Qg5 10.Bf1=) 7...e4 8.Rb1 ef3 9.Bf3 Nd7 10.Nd5+/-; 6...Bf5 7.Bc3 (7.Nc3 Ne7 8.d4 Bb4 9.a3 Bc3 10.Bc3=; 7.d4 e4 8.Nfd2 Bb6 9.Nc3 Ba5 10.0-0+=; 7.0-0 Ne7 8.d4 e4 9.Nfd2 d5 10.c4=; 7.Bc4 Nd7 8.Nc3 Nb6 9.Nd5 Nd5 10.Bd5=; 7.d3 a6 8.Nc3 Ne7 9.d4 ed4 10.ed4=; 7.c3 Ne7 8.d4 Bb6 9.0-0 e4 10.Nfd2=; 7.a3 Ne7 8.d4 e4 9.Nfd2 Bb6 10.c4=) 7...Nd7 8.d4 Bb6 9.a4 c5 10.a5+=.

6.Be2 Bf3 7.Bf3 c6 8.a4 Qg6 9.0-0+/- d5 10.Be5 f6?? (better 10...Bd6 11.Bd6 Qd6+/-) 11.Bb8+- Rb8 (11...Qf7 12.Bg3 Qe6+-) 12.Bh5 1-0. DEFFM – GuestTBXB, freechess.org, 2021.

6.Be2 Bf5 7.d4 ed4 8.0-0 Qg6 (8...a6!?+=) 9.ed4+/- Bc2 10.Qe1 Bb6? (better 10...Bb1 11.Nh4 Qe4 12.dc5 Kf8+-) 11.Bd3 Ne7 (11...Qe6 12.Bc2 a6+-) 12.Bg6 Bg6 13.Qe3 c5 (13...c6 14.Re1 Bd8 15.bc6 bc6 16.Ba3+-) 14.Re1 Bd8 15.dc5 dc5 (15...0-0+-) 16.Bg7 Rg8 17.Bf6 Kf8 18.Be7 Be7 19.Qe7 Kg7 20.Qb7 Nd7 21.Qd7 Rad8 22.Qa7 Rd5 23.Nc3 Rh5 24.b6 Bf5 25.b7 Rh8 26.b8Q Rb8 27.Qb8 Rh6 28.Re8 Rf6 (28...Bc8 29.Qe5 f6 30.Qe7 Kg6 31.Rg8 Kh5 32.Qc5 Bf5 33.Qf5) 29.Rg8 Kh6 30.Qf4 Kh5 31.Qg5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 Qg6 7.0-0 Bh3= 8.Nh4 Qg5 9.d4 Bb6 (9...ed4 10.ed4 Bb6 11.Bc4 Qh4 A) worse 12.gh3 Nf6=+ (worse 12...Qh3 13.a4+=); B) 12.Qf3+=) 10.de5+= de5 11.Qd5 c6?? (better 11...Nd7 12.Qb7 Rd8+=) 12.Qe5+- Qe5 13.Be5 Be6 (13...f6 14.Bb8 (14.gh3?! fe5 15.Nf5 Nf6+/-) 14...Rb8 15.gh3+-) 14.Bg7 (14.Bg7 Bd8 15.Bh8 Bh4 16.Nc3+-) 1-0. GuestRMQV – bobbytaylor, freechess.org, 2020.

6.Be2 Nh6 7.Nc3 (7.0-0 Nd7 8.d4 ed4 9.ed4 0-0-0 10.h3=) 7...Qe6 8.0-0 0-0 9.d4 Bb4 10.de5 +=.

6.h3 Bf3 7.gf3 Nd7 8.f4 Qg6 9.Rh2 0-0-0 10.Rg2=.

6.h3 Bf3 7.Qf3 Qf3 8.gf3 a6 (8...Nf6 9.f4 Nbd7 10.fe5 de5 11.d4 ed4 12.ed4=) 9.Rg1 (9.f4 Nd7+=) 9...g6 10.d4 (10.f4!? f6 11.fe5 de5 12.a4+=) 10...ed4= 11.ed4 Bb6 (11...Bb4 12.Nd2=) 12.d5 Nd7?? (better is 12...f6=) 13.Bh8+- 0-0-0 (13...Ne7 14.ba6 ba6 15.Rg4+-) 14.ba6 ba6 (14...Ne7 15.Bg7+-) 15.Ba6 Kb8 16.Bb2 Re8 (16...Ne7 17.Nc3+-) 17.Kf1 Nc5 (17...Ngf6 18.c4+-) 18.Bb5 Re7 (18...Rc8 19.Nc3+-) 19.Nd2 Nh6 (19...Nb7 20.Nc4+-) 20.Bf6 Re5 (20...Ng8 21.Be7 Ne7 22.Bc4+-) 21.Be5 de5 22.Nc4 Nf5 23.Ne5 f6 24.Nc6 Kb7 25.a4 Nd7 26.a5 Nd6 27.Nd8 Kc8 28.Bd7 Kd7 29.ab6 cb6 30.Ne6 Nf7 31.Ra7 Ke8 32.Ke2 Nd8 33.Nd8 Kd8 34.Rh7 Ke8 35.Ra1 Kf8 36.Ra8 1–0. mar – Onder Tunaboylu, internet, 2010.

6.h3 Bh5 7.Nc3 Ne7 8.Ne4+= Qg6? 9.Nc5+- dc5 10.g4 Bg4 11.hg4 Nd7 12.Ne5 Ne5 13.Be5 0-0-0 14.Bg2 f6 15.Bg3 c4 16.Rh5 c3 17.d3 f5 18.gf5 Qb6 19.Qg4 Kb8 20.a4 Nd5 21.Bd5 Rd5 22.Qg7 Rhd8 23.Rh7 Rc8 24.a5 Qc5 25.Ra4 Qb5 26.Qc7! Rc7 27.Rh8 Rd8 28.Rd8# 1–0. Taulien,Hans_Juergen (2225) – Aga,Abdissa (1750), remoteschach.de, 2004.

6.h3 Bh5 7.Nc3 Bf3 8.gf3 Nd7 9.Rg1 0-0-0 10.Ne4 +=.

6.h3 Bh5 7.Nc3 Bf3!? 8.gf3 Ne7 =.

6.h3 Bh5 7.Be2 Ne7 8.Nc3 Bg6 9.d4 Bb4 10.a3 =.

5.Nc3 a6 6.Ne4 Qe7 7.Nc5 dc5 8.ba6 f6 9.ab7 Bb7 10.e3 Nh6 11.Bb5 Nc6 12.d3 0-0 13.0-0 e4 14.Nd2 ed3 15.cd3 Rfd8 16.Nb3 Nb4 17.a3 Nd5 18.Qc2 c6 19.Bc4 Kf8 20.d4 cd4 21.Bd4 f5 22.Bc5 Rd6 23.Nd4 (23…Ra5 24.Nf5 Nf5 25.Qf5 Nf6 26.Rab1 Rc5 27.Qc5+-) 1–0. Trkn – guest76, ICC, 2004.

5.Nc3 Nd7 6.e3 Ne7 7.Ne4 Qf5 8.Bd3 c6?? 9.Nc5 dc5 10.Bf5 Nf5 11.bc6 bc6 12.Ne5 f6 13.Qh5 g6 14.Ng6! hg6 15.Qh8 Nf8 16.Qf6 Rb8 17.Qe5 (17...Ne7 18.Qb8+-) 1–0. nordlicht – Gregor123, mySchach.de, 2003.

5.Nc3 e4 6.Na4 Qh6 7.Nd4 Nf6 8.Nc5 dc5 9.Nb3 Bf5 10.Nc5+= Ng4 11.h3 b6 12.Nb3 Nf6 13.e3 0-0 14.Nd4 Bd7 15.d3 Re8 16.de4 Ne4 17.Bc4 c6 18.Qf3 Ng5 19.Qf4 a6 20.a4 ab5 21.ab5 Ra1 22.Ba1 cb5 23.Bb5 Bb5 24.Nb5 Qg6 25.Nd6 Ne6 26.Qf5 Qf5 27.Nf5 g6 28.Nh6 Kf8 29.Ke2 f5 30.g4 f4 31.Kf3 fe3 32.fe3 Nc6 33.Rb1 Ng5 34.Ke2 Rb8 35.h4 Ne4 36.Rf1 Ke8 37.Rf7 Ra8 38.Bd4 Ra2 39.Rh7 Nd4 40.ed4 Nf6 41.Rc7 Nd5 42.Rc4 Ke7 43.Kf3 Ra3 44.Ke4 Nf6 45.Kf4 Kd6 46.Kg5 Kd5 47.Rb4 Nd7 48.Kg6 Rc3 49.Nf5 Ke4 50.d5 Ke5 51.d6 Rc2 52.h5 Rc8 53.Kg7 Ke6 54.h6 (54...Rf8 55.Re4 Kd5 56.Re7+-) 1–0. Bendig,Frank – Herbst, BdF, 1988.

5.e3 b6 6.d4+= (6.Nc3 A) 6...c6 7.a3 (7.bc6 Nc6 8.Nd5 Qd8 9.d4 ed4 10.Bb5+/-; 7.Ne4 Qe7 8.Nc5 bc5 9.h3 Nf6 10.a4=) 7...Bg4 8.Be2 a6 9.bc6 Ne7 10.Ne4+/-; B) 6...Bb7 7.d4 (7.Na4 Bb4 8.c3 Ba5 9.d4 Ne7 10.Be2=; 7.Bc4 Ne7 8.Na4 Bb4 9.a3 Ba5 10.Nc3=; 7.Be2 a6 8.d4 Bb4 9.0-0 e4 10.ba6=) 7...ed4 8.Nd4 Ne7 9.Na4 Bd4 10.Qd4=; 6.Bc4 a6 7.Nc3 (7.Bd5 Ra7 8.d4 ed4 9.ed4 Ne7 10.Bb3=; 7.d4 ed4 8.ed4 ab5 9.Bb5 c6 10.Qe2=) 7...ab5 8.Nb5 Qe7 9.d4 ed4 10.0-0+=; 6.Bd3 Bb7 7.Bc4 (7.Be2 a6 8.d4 Bb4 9.c3 Ba5 10.0-0=; 7.a4 a6 8.Be2 Ne7 9.d4 Bb4 10.c3=; 7.c4 a6 8.Be2 Ne7 9.d4 Bb4 10.Bc3=; 7.0-0 a6 8.Ne1 Qe6 9.f4 ab5 10.Bb5=; 7.a3 a6 8.Nc3 ab5 9.Bb5 Nd7 10.Bc4=) 7...a6 8.d4 e4 9.Nfd2 Bb4 10.ba6=; 6.Be2 A) 6...Qg6 7.Bd3 (7.0-0 e4 8.Nh4 Qg5 9.f4 ef3 10.Nf3+/-; 7.Nc3 Nf6 8.d4 Bb4 9.0-0 e4 10.Ne1=) 7...Qh5 8.0-0 a6 9.Be2 Qg6 10.d4+/-; B) 6...a6 7.d4 (7.Nc3 ab5 8.Nd5 Qd8 9.d4 Ba3 10.Ba3=; 7.a4 Ne7 8.d4 ed4 9.Nd4 0-0 10.0-0=; 7.ba6 Ba6 8.d4 ed4 9.ed4 d5 10.Nc3=) 7...ed4 8.ed4 Bb4 9.c3 Ba5 10.0-0=; 6.c3 e4 7.d4 (7.Nd4 a6 8.d3 ed3 9.Bd3 Bb7 10.0-0=) 7...ed3 8.Bd3 a6 9.Qc2 ab5 10.c4+=) 6...Bb4 (better is 6...ed4!? A) 7.Nbd2 Nd7+= (7...a6 8.Nd4 Ne7 9.Bd3 Bb7 10.0-0+=) 8.ed4 d5 9.c4 Bd6 10.cd5+=; B) 7.ed4 d5 8.c4 Bb4 9.Bc3 Bd6 10.Qe2+=) 7.c3+- Ba5 8.de5 de5 9.Qd5 c6 10.Qe5 Qe5 11.Ne5 c5 (11...Be6 12.Nd2 a6 13.a4+-) 12.Nd2 Bb7 (12...Nd7 13.Nec4 Ngf6+-) 13.Ndc4 Nf6 (13...Ke7 14.Na5 ba5+-) 14.Nd6 Ke7 15.Nb7 Ne4 16.Na5 ba5 17.Rd1 Rd8 (17...f6 18.Nc4+-) 18.Rd8 Kd8 19.Nf7 Ke7 20.Ne5 Nd7 21.Nc6 Kf7 22.Bc4 Kf6 23.Bd5 (23...Re8 24.c4 Kg6 25.Ke2+-) 1–0. marekt – smn53, internet, 2009.

5.e3 Bd7 6.Be2 Ne7 7.a4 0-0 8.0-0 Qg6 (8...a6 9.d4 ed4 10.Nbd2=) 9.d4+= Bb4 (9...ed4 10.Bd3 Qh5 11.ed4=) 10.c3 Ba5 11.de5 Bh3 12.Nh4 (12.Ne1 Bc8 13.Nd2 de5+-) 12...Qg5 13.Nd2 (13.ed6 Ng6 14.f4 Qh4 15.gh3 cd6+=) 13...Nf5 (13...Qh4 14.gh3 de5 15.Nb3+=) 14.Ndf3+= Qf6?? (better 14...Qg4 15.ed6 Rd8+=) 15.ef6+- (15.ef6 Nh4 16.Nh4+-) 1–0. Janek – Mrx, internet, 2019.

5.e3 Ne7!?= 6.d4 e4 7.Nfd2 d5 8.c4 c6 9.bc6 bc6 10.Nc3 +=.

5.e3 Bf5 6.d4= Bb4 7.c3+/- Bb1 8.cb4 e4 9.Qb1 ef3 10.Qe4 Kd7 11.Qb7 fg2 12.Bg2 Qd8 13.a3 Na6 14.Qc6 Ke7 15.Qe4 Kf8 16.Qa8 Nb8 17.Qa7 (17...Ke8 18.Rc1+-) 1–0. Taulien,Hans_Juergen (2225) – Luginbuel,Daniel (1740), remoteschach.de, 2003.

5.e3 Nh6 6.Be2 Qg6 7.0-0 Bd7 8.d4+/- ed4 9.ed4 Bb6 10.Re1 0-0+= 11.Nbd2 c6 12.a4 Bd8 13.Bd3 Qf6 14.c4 Ba5 15.Qc2 Bf5 16.d5?? Bd3–+ 17.Bf6 Bc2 18.Be7 Re8 19.Bd6–/+ Re1 20.Re1 Nd7 21.dc6 bc6 22.bc6 Nf8 23.c7 Ba4 24.Ra1= Bd2 25.Ra4 Bc3 26.h3 Nf5–/+ 27.Ra7 Rc8 28.c5 Nd7 29.Rb7 f6 30.c6 Nf8?? 31.Bh2?? Ne7 32.Rb8 Ne6 33.Bd6= Kf7 34.Be7 Rc7 35.Bb4 Rc6 36.Rb7 Kg6 37.Nh4 Kh5 38.g3 Bd4 39.Nf5 Rc1 40.Kg2 Kg6 41.Nd4 Nd4 42.Bf8 Ne6 43.Ba3 Ra1 44.Bd6 Nd8 45.Rd7 Nf7 46.Bf8 Rb1 47.h4 h5 48.g4 hg4? 49.h5+- Kh5 50.Rf7 g6 51.Rf6 Rb8 52.Bc5 Rg8 53.Be3 g5 54.Kg3 Rg7 55.Rf5 Rg6 56.Rd5 Rg7 57.Rd4 Rf7 58.Rg4 Rf5 59.Rc4 Rd5 60.Rc5 (60...Rc5 61.Bc5+-) 1–0. Istvanny (1695) – vallabhan, internet, 2007.

5.e4 Qg6 6.d3 =+.

5.e4 Nh6 6.h3 c6 7.c4 a6 8.Nc3 Bd7 9.a4 0-0 10.a5 ab5=+ 11.cb5 Qg6 12.Nh4 Qf6 13.b6?? Qf2# 0–1. gtate (2060) – lwarren (2195), net–chess.com, 2006.

4.a4 a6 5.Nf3 Bd6 (5...d6 6.Nc3=) 6.e3 ab5 7.ab5 Ra1 8.Ba1 cb5 9.Nc3 Ne7?? (better 9...Nc6+=) 10.Ne4+- (10.Bb5?! Nbc6+=; 10.Nb5?! Nbc6+=) 10...Qe6 11.Nd6 Qd6 12.Be5 (12.Ne5?! f6 13.Nf3 b4+/-; 12.Bb5?! Nbc6+=) 12...Qc5 13.Bb8 d6 14.d4 Qb4 15.Qd2 (better 15.Nd2!? 0-0 16.c3 Qa3+-) 15...Qb1 16.Qd1 Qb4 17.Nd2 Nd5 18.Qf3 Nf6 19.Qf4 Ng4 (19...Ke7 20.Bc7 Bd7+-) 20.Bd6 Qc3 21.Bb5 Bd7 22.Qe4 (22.Qe4 Ne5 23.Qe5 Kd8 24.Qe7 Kc8 25.Qd7) 1-0. DEFFM – GuestKGTC, freechess.org, 2021.

4.a4 cb5 5.ab5 a6 6.c4 ab5?? (6...Bc5 7.Nf3 d6 8.d4 ed4 9.Nd4=) 7.cb5 (better is 7.Ra8 Bd6 8.d4+-) 7...Ra1= 8.Ba1 Bc5 9.e3 Qh4?? 10.Nf3 Qe4?? 11.Be5+- Qb4 12.Bb8 Nf6 13.Be2 Ne4 14.0-0 0-0 15.Be5 d6 16.Bc3 Nc3 17.Nc3 Qg4 18.Nd4 Qh4 19.Nd5 Bb6 20.Nb6 Re8 21.Nc8 Rc8 22.Qb3 Re8 23.Nf5 Qg5 24.Nd6 Re6 25.Rc1 Rd6 26.Rc8 Rd8 27.Rd8 Qd8 28.d4 g5 29.Bc4 Qf6 30.Bf7! Kg7 31.Bd5 h5 32.Bb7 g4 33.Qd5 h4 34.Qe5 Qe5 35.de5 g3 36.b6 gh2 37.Kh2 Kg6 38.Bd5 Kg5 39.b7 Kg4 40.b8Q Kh5 41.Qg8 h3 42.Bf7 Kh4 43.Qg3 (43.g3) 1–0. tanto (1680) – gahorton, net–chess.com, 2002.

4.a4 cb5 5.ab5 a6 6.e3 d5 (6...d6 7.d4+=) 7.Qf3 (7.f4 d4+/-) 7...Qf3 8.Nf3 f6 (8...e4 9.Nd4 Nf6 10.Nc3+=) 9.Be2 (9.c4 dc4 10.Bc4 Nd7+=) 9...Bd7 (9...Bd6 10.c4+=) 10.Nc3 (better is 10.c4+/-) 10...d4? (better is 10...Ne7+=) 11.Nd5 Bd6 12.ed4 Ne7 13.Nb6 Ra7 14.de5 fe5 15.Ne5 Bc5 16.Ned7 Nd7 17.Nd7 Kd7 18.ba6 ba6 19.Ra6 Ra6 20.Ba6 Ra8 21.Bb5 Kd6 22.0-0 Nf5 23.c3 g5 24.d4 Bb6 25.Re1 Ra2 26.Bc1 h6 27.Bc4 Ra1 28.Bd2 Re1 29.Be1 h5 30.g3 h4 31.g4 Ne7 32.Bd2 Kc6 33.Bg5 Ng6 34.Bd3 Nh8 35.Bh4 Nf7 36.g5 Bd8 37.g6 Nh6 38.Bd8 (38...Ng8 39.Bc4+-) 1–0. MasterofDisaster – Whodareswins, Live Game Caissa's Web, 2004.

4.a4 cb5 5.ab5 d5 6.Nf3 Nd7 7.Nc3 =.

4.a4 d5 5.Nf3 Nd7 6.c4 =+.

4.Nf3 d6 =.

4.d4 e4 5.e3 Ne7 6.c4 b6 7.Nc3 c6 8.a4 c5? (better is 8...a6=) 9.dc5+- (9.Nd5?! Nd5 10.cd5 Bb7+/-) 9...bc5? (9...Qf5+-) 10.Nd5 (10.cd5?! Bf5+-) 10...Nd5 11.Bf6 (11.Bf6 Nf6 12.Ne2+-) 1–0. Jokmin,Alex – Venturas,Bob, RN–2009–0-00247, 2009.

4.e3 Bc5 (--> 3.b5 Bc5 4.e3 d5).

4.e3 Bf5 5.f4 Nd7 6.Nf3 =.

5.c3 dc3!? 6.Nc3 Nd7+= 7.Qc2 (7.Rc1 Qd6 8.Qc2 Ngf6 9.e3 Qc5 10.Bd3 Be7 11.Ng5 Qb4 12.Nce4; 7.g3 Qd6 8.Qc2 Ngf6 9.Bg2 Qc5 10.0-0 Bd6 11.a4 0-0 12.d3) 7...Qg6 8.Qg6 hg6 9.Nd5 Kd8 10.Ne5 Ne5 11.Be5 Rh5 12.Nc7.

5.c3 c5 6.d3 =.

5.c3 c5 6.cd4 cd4 7.e3 Bc5 8.Qc2 Nd7 9.Bd3 Ne7 10.0-0 0-0 11.Bh7 Kh8 12.Bd3.

5.c3 Bc5 6.cd4+/- ed4 7.e3 Nh6 (7...Qg6 8.Bd4 (8.ed4 Bd6 9.Ne5 Qe4 10.Qe2 Qe2 11.Be2 Be6 12.0-0) 8...Bd4 9.Nd4+/- Ne7 10.Qc1 c6 11.Qa3 Nd7 12.bc6; 7...Nd7 8.ed4 Bd6 9.Nc3 Qg6 10.g3 Ne7 11.Be2 0-0 12.0-0) 8.Qc2 Nd7 9.ed4 (9.Nd4!? Qb6 (9...Qe7 10.Bd3 Ne5 11.Be4 Nhg4 12.0-0) 10.Nc3+- 0-0 11.Na4 Qd6 12.Bd3) 9...Bb6 (9...Bd6 10.Nc3+= (10.Bd3 Qe7 11.Kf1 Nf6 12.Nc3) 10...Qg6 11.Qg6 hg6 12.Ne4; 9...Bb4 10.Bd3 Qe7 11.Kf1 Nf6 12.Nc3) 10.Bd3 Qe6 (10...g6 11.0-0 0-0 12.a4) 11.Kf1 0-0 (11...Nf6!?+/- 12.Ba3) 12.a4 c6 13.Na3 a6 (better is 13...Nf6!? 14.Ng5 Qg4 15.Nh7 Nh7 16.Bh7 Kh8+/-) 14.Re1+- Qd6 15.Nc4 Qc7 16.bc6 Qc6 17.Ba3 (worse is 17.Bh7 Kh8+-; 17.Nb6?! Qc2 18.Bc2 Nb6+/-) 17...Rd8 (17...g6+-) 18.Be4 (18.Nb6?! Qc2 19.Bc2 Nb6+/-) 18...Qf6 (18...Qc7 19.Bd6 (19.Nb6?! Qc2 20.Bc2 Nb6+/-) 19...Nf6 20.Bc7 Bc7 21.Ng5 Ne4 22.Qe4+-) 19.Bh7 (19.Nb6?! Qb6 20.Be7 Re8+-) 19...Kh8 20.Be7 (20.Nb6?! Qb6 21.Bd3 Kg8+-) 20...Qc6 (20...Bd4 21.Bf6 Bf6 22.Be4+-) 21.Bd8 Bd8 (21...f5 22.Ng5 Nf8+-) 22.Re8 (22.Re8 Nf8 23.Rf8 Ng8 24.Rg8#) 1–0. pierre (2140) – klaussinho, internet, 2010.

5.c3 Nd7 6.cd4 e4 7.Ne5 Qf5 8.g4 Qe6 9.Qc2 Nb6 10.e3 Ne7 11.g5 f6 12.gf6.

5.e3 c5 =.

5.e3 d3?? 6.Be5 Qe6 7.Bd3 Nf6 8.Bc7 Bd6 9.Bd6 Qd6 10.Nc3 0-0 11.0-0 a6 12.a4 Nd5 13.Nd5 Qd5 14.Qe2 14...Nd7 15.c4 Qh5 16.Rab1 ab5 17.Rb5 Qh6 18.Be4 Ra4 19.Bb7 Nf6 20.d4 Bd7 21.Rbb1 Be6 22.d5 Bf5 23.Rbc1 Ra3 24.Qb2 Ra7 25.Bc6 Re7 26.Nd4 Be4 27.Qe2 (27...Qg6 28.f4+-; better is 27.Qa3 Re5 28.Qd6+-) 1–0. TheMallard – pru, Live Game Caissa's Web, 2005.

4.Nf3 d6 5.e3 (5.e4 Qg6 6.Nc3 Nd7=) 5...Bd7 (5...Bf5 6.d3=) 6.Be2 (6.Nc3 Bf5=) 6...c6 (6...a6 7.a4=) 7.0-0 (7.Nc3 d5=) 7...cb5 8.Nc3 (8.e4 a6=) 8...b4=+ 9.Ne4 (9.Nb5 Na6=) 9...Qg6 (9...Qh6 10.c4=+) 10.Nfg5= Bf5?? (10...Qh6 11.Bc4 d5 12.Be5 A) 12...de4? 13.Nf7 (13.Bf7 Kd8 14.Bf4 Qc6=) 13...Qc6 14.Bb8+-; B) 12...Nec6 13.Bd5 Ne5+=) 11.Bh5+- Qh6?? (11...Be4 12.Bg6 Bg6+-) 12.Nf7 (12.Bf7?! Kd7+-) 12...g6 (12...Be4 13.Nh6 g6+-) 13.Ned6 (13.Nh8?! Be4 14.Bf3 Bc6=) 13...Kd7 14.Nh6 Kd6 (14...Bh6 15.Be5 Rd8 16.Bf3+-) 15.Nf7 Ke6 16.Nh8 gh5 17.Qh5 Ng6 18.Qh7 Nh8 19.Qb7 Be4 20.Qe4 Nc6 21.Qc6 Bd6 22.Qa8 b3 23.Qe8 Kf6 24.Qh8 Ke6 25.ab3 e4 26.Ra6 (26.Qe8 Kf5 27.Ra5 Be5 28.Qe5 Kg6 29.Qg7) 26...Kd7 27.Qf6 (27.Ra7 Bc7 28.Qh7 Kc6 29.Qc7 Kd5 30.c4 Ke6 31.Qd7) 27...Be7 (27...Bb4 28.Ra7 Ke8 29.Qe6 Kd8 30.Qd7) 28.Ra7 Ke8 (28...Kc8 29.Qc6 Kd8 30.Qd7) 29.Qe7 1–0. GuestGVPC – GuestDKTZ, freechess.org, 2020.

4.Nf3 Ng6 5.e3 (5.e4 Bc5=) 5...d6 (5...d5 6.c4=) 6.d4 ed4 (6...Bg4 7.Nc3=) 7.Bd4 (7.Nd4 d5+=) 7...Qe7 (7...Ne5 8.Nbd2=) 8.Be2 Nd7 (8...Be6 9.0-0+=) 9.0-0 (9.Nc3 Nf6+=) 9...b6 (9...Nde5 10.Nc3+=) 10.Nc3 Bb7 11.Bc4 (11.a4 a5+-) 11...c5 (11...Nde5 12.Bd5 c5 13.bc6 Nc6 14.e4+-) 12.bc6! Bc6 13.Nd5 Bd5 (13...Qd8 14.e4+-) 14.Bd5 Rb8 (14...Rc8 15.c4+-) 15.Rb1 (15.c4 Rc8+-) 15...Nf6 (15...Rc8 16.c3+-) 16.Bc6 (16.Bf6 gf6 17.Bc6 Kd8+-) 16...Nd7 17.Qd3 (better 17.c4 Rc8 18.Qa4+-) 17...f6? (better 17...Rc8 18.Qb5 Qd8+-) 18.Qa6 Nge5 19.Be5 de5 (19...fe5 20.Qa7 Rc8 21.Qb6 Qe6+-) 20.Qa7 g6 (20...Rd8 21.Rfd1 Qe6 22.Rb6 Be7+-) 21.Qb8 (21.Qb8 Kf7 22.Bd7 Qd7 23.Rb6+-) 1–0. Anonymous – Anonymous, lichess.org, 2020.

4.Nc3 c6 A) 5.bc6 bc6 (5...dc6 6.Ne4 Qe7 7.Rb1 Bf5 8.Ng3 Nd7 9.Nf5 Nf5 10.Nf3 0-0-0; 5...Nc6 6.Nd5 Qd8 7.Nf3 e4 8.Nd4 Nd4 9.Bd4 Nf5 10.Bc3 Ne7; 5...Bc5 6.cd7 Nd7 7.e3 0-0 8.Ne4 Qc6 9.Bd3 Bb6 10.Nf3 f5; 5...Na6 6.Nf3 bc6 7.Rb1 d5 8.e4 d4 9.Na4 Nc5 10.c3 Qg6) 6.Nf3 d5 7.e4 d4 8.Na4 Nd7 9.c3 c5 10.Bd3 Ba6; B) 5.e3 d5 (5...Be7 6.Nf3 d5 7.Be2 0-0 8.0-0 Nd7 9.Re1 Qe6 10.h3 Nf5) 6.Nf3 Nd7 7.Rb1 Bd6 8.Be2 0-0 9.0-0 Rb8 10.h3 Nc5; C) 5.h3 d5 (5...Be7 6.Nf3 0-0 7.bc6 dc6 8.e3 Na6 9.Ne4 Qg6 10.Ng3 f6; 5...Nf5 6.e3 a6 7.bc6 Nc6 8.Nd5 Qd6 9.c4 Nce7 10.Nf3 Nd5; 5...Bb4 6.Nf3 0-0 7.a3 Ba5 8.e4 d5 9.bc6 bc6 10.Bd3 d4; 5...e4 6.e3 d5 7.Rb1 Qe5 8.Nge2 Nf5 9.bc6 Nc6 10.Nb5 Qb8) 6.Nf3 Nd7 7.e3 Nc5 8.d4 ed4 9.Nd4 Bd7 10.Rb1 Bd6; D) 5.g3 d5 (5...Nf5 6.Bh3 Nd6 7.d3 Nb5 8.Ne4 Qe7 9.a3 d5 10.Bc8 de4; 5...Bb4 6.Nf3 0-0 7.a3 Ba5 8.Rb1 cb5 9.e4 Nc6 10.Bb5 d6; 5...Be7 6.Nf3 d5 7.Rb1 Be6 8.Bg2 0-0 9.0-0 Nd7 10.bc6 bc6; 5...Ng4 6.f3 Nh6 7.Bh3 Nf5 8.bc6 dc6 9.Ne4 Qe7 10.Bg2 Nd7) 6.Nf3 Nd7 7.Bg2 Bb4 8.0-0 0-0 9.a3 Ba5 10.Rb1 Nf5; E) 5.e4= Bc5 6.Qf3 Qf3 7.Nf3 Ng4 8.h3 Nf2 9.Rh2 f5 10.ef5 0-0.

4.Nc3 Ng4 5.f3+= (5.Nh3 Qe6 (5...Qg6 6.Nd5 Bd6 7.e3 c6 8.Bd3 f5 9.Nc3 0-0 10.0-0 Be7; 5...c6 6.f3 Nh6 7.Ne4 Qh4 8.g3 Qh5 9.Nef2 f6 10.e4 d5; 5...e4 6.e3 Qf5 7.Nf4 Bd6 8.Ne4 Bf4 9.Bd3 Kf8 10.ef4 d5; 5...Qh6 6.Nd5 Bd6 7.e3 Nf6 8.Nf6 gf6 9.Bd3 Rg8 10.Qf3 a6) 6.e4 Qg6 7.Qf3 Bd6 8.Be2 h5 9.Qg3 a6 10.a4 b6) 5...Bc5? (better 5...Nh6!?+= 6.Nh3 Qd8 7.Nf2 d5 8.Nd3 Be6 9.Ne5 Bd6 10.d4 f6) 6.Ne4+- Qb6 (6...Qg6 7.Nc5 Nh2 8.d4+- (8.Be5?! Nf1 9.Kf1 d6+=)) 7.Nc5 (worse 7.fg4 Bg1 8.e3 d5+-) 7...Qc5 8.fg4 d6 (8...Qb5 9.Rb1 d6 10.e3+-) 9.e3 c6 (9...Qb4 10.Bc3 Qg4 11.Qg4 Bg4 12.d4+-) 10.a4 cb5 11.ab5 Qb6 12.Nh3 a6 13.Bc3 ab5 (13...0-0+-) 14.Ra8 Nc6 (14...Qc7 15.Bb5 Nc6 16.0-0+-) 15.Rc8 Kd7 16.Rh8 1–0. pierre – titulat, internet, 2010.

4.e3 A) 4...d6 A1) 5.Nf3 Be6 (5...Bf5 6.Nc3 Nd7 7.Be2 Nb6 8.h3 e4 9.Nd4 d5 10.0-0 Bd6; 5...Qe6 6.Nc3 Be7 7.Be2 Nd7 8.0-0 0-0 9.d4 e4 10.d5 Qg6; 5...Be7 6.Nc3 Qe6 7.e4 Qg6 8.h4 Be6 9.h5 Qf6 10.d4 Ng4; 5...Nf5 6.h4 Be6 7.Nc3 h5 8.Ne4 Qg6 9.Neg5 Nd7 10.d4 e4) 6.Nc3 Nd7 7.Bd3 Nc5 8.Ne4 Ne4 9.Be4 0-0-0 10.c4 Qe7; A2) 5.Bd3 d5 (5...Bf5 6.Nc3 e4 7.Bc4 Nd7 8.Bd5 Qg6 9.Nge2 Qg2 10.Rg1 Qh2; 5...Nd7 6.Nc3 Nc5 7.Be2 Nf5 8.e4 Ne7 9.Nf3 Qg6 10.d4 ed4; 5...Qe6 6.Nf3 Nd7 7.0-0 Be7 8.Nc3 Nc5 9.Be2 Qg6 10.d4 Bh3; 5...Be6 6.Nc3 Nd7 7.Nf3 Nf5 8.e4 Ne7 9.Be2 g6 10.d4 Bh6; 5...Qd8 6.Nf3 Be7 7.Nc3 0-0 8.Nd5 Nd7 9.0-0 Nc5 10.Bc4 Be6) 6.f4 Bg4 7.Nf3 Nd7 8.0-0 Qe6 9.fe5 0-0-0 10.a3 Kb8; A3) 5.Ne2 Be6 (5...a6 6.Nbc3 ab5 7.Nb5 Na6 8.Ng3 Qh4 9.Ba3 d5 10.Bf8 Kf8; 5...d5 6.Nf4 Qd6 7.Nd3 Nd7 8.Be2 Nf5 9.0-0 e4 10.Nf4 Be7; 5...Nd7 6.Nbc3 Qe6 7.g3 Be7 8.Bg2 Nb6 9.0-0 0-0 10.d3 a5; 5...Qe6 6.Nbc3 Nd7 7.Ng3 d5 8.d4 Nf6 9.de5 Qe5 10.Qd3 Be6; 5...Nf5 6.Nbc3 Be6 7.g3 Nd7 8.Bg2 0-0-0 9.0-0 Nb6 10.Qc1 Kb8) 6.Nf4 Nd7 7.Ne6 fe6 8.Nc3 Be7 9.Qh5 Qf7 10.Be2 0-0; A4) 5.Qf3 Be7 (5...Qf3 6.Nf3 Be7 7.Bc4 Be6 8.Bb3 Nd7 9.Nc3 Nc5 10.Be6 Ne6; 5...Nd7 6.Nc3 Nb6 7.a4 Qf3 8.Nf3 Be6 9.Ng5 Be7 10.Ne6 fe6; 5...Qg6 6.Bd3 f5 7.Nc3 e4 8.Ne4 fe4 9.Be4 Qg5 10.Bb7 Qb5; 5...a6 6.Nc3 ab5 7.Qf6 gf6 8.Nd5 Kd8 9.Nf6 Nd7 10.Ne4 Rg8) 6.Nc3 Qf3 7.Nf3 Be6 8.d4 Nd7 9.Be2 f5 10.0-0 e4; A5) 5.Be2 Qg6 (5...Be6 6.Bf3 c6 7.Ne2 a6 8.bc6 Nc6 9.Nbc3 Qg6 10.d4 Bg4; 5...Nf5 6.Nc3 Be6 7.e4 Nd4 8.Nf3 Be7 9.Nd4 ed4 10.Nd5 Bd5; 5...a6 6.Nc3 ab5 7.Nb5 Na6 8.Nf3 Be7 9.0-0 0-0 10.Nc3 Be6) 6.Nc3 Bf5 7.Nd5 Bc2 8.Qc1 Kd8 9.Nf3 c6 10.Nh4 Qe4; A6) 5.Nc3 Be6 (5...Bf5 6.Nd5 Qd8 7.Nf3 Nd7 8.Bc4 c6 9.Nc3 d5 10.Bb3 Bd6; 5...Nf5 6.Bd3 Be6 7.Ne4 Qe7 8.c4 a6 9.a4 Nd7 10.Nf3 Nh4) 6.Bd3 Nd7 7.Nf3 Nf5 8.0-0 Be7 9.Be4 Nc5 10.Nd5 Bd5; B) 4...d5 B1) 5.Nc3 c6 (5...Be6 6.Qf3 c6 7.Qf6 gf6 8.Nf3 a6 9.a4 Bb4 10.Be2 ab5) 6.Nf3 Bd6 7.Rb1 Nd7 8.Be2 0-0 9.0-0 Rb8 10.g3 Nb6; B2) 5.f4 Nd7 (5...Bd6 6.Nf3 Nd7 7.Bd3 0-0 8.0-0 Qe7 9.Ne5 Ne5 10.fe5 Be5; 5...Bg4 6.Nf3 Nd7 7.fe5 Qe6 8.Be2 Bf3 9.Bf3 Ne5 10.0-0 0-0-0) 6.Nf3 Bd6 7.Bd3 0-0 8.0-0 Qe7 9.Ne5 Ne5 10.fe5 Be5; B3) 5.Nf3 Nd7 (5...Bd6 6.Nc3 c6 7.Be2 0-0 8.0-0 Nd7 9.Re1 Nb6 10.bc6 bc6) 6.c4 d4 7.ed4 e4 8.Qe2 Qe7 9.Ne5 Ne5 10.de5 Bf5.

4.Nf3 d6 A) 5.Nc3 Be6 (5...e4 6.Na4 Qe7 7.Nd4 c5 8.Nb3 Nd7 9.e3 Nf5 10.Be2 Ne5) 6.e3 Nd7 7.Bd3 Nc5 8.Ne4 Ne4 9.Be4 0-0-0 10.c4 Qe7; B) 5.d3 Be6 (5...Qg6 6.c4 Be7 7.Nc3 0-0 8.h4 Be6 9.Nd5 Bd5 10.cd5 Nd7; 5...a6 6.c4 Be6 7.Nc3 ab5 8.Nb5 Na6 9.c5 Be7 10.cd6 cd6) 6.Nbd2 Nd7 7.Ne4 Qg6 8.h4 Ng4 9.h5 Qf5 10.Neg5 d5; C) 5.e4 Nd7 (5...Be6 6.Nc3 Nd7 7.Be2 Be7 8.0-0 0-0 9.d4 Qg6 10.Re1 Bf6; 5...Be7 6.Bc4 Nd7 7.Nc3 Qg6 8.Qe2 Nb6 9.Nd5 Nd5 10.Bd5 0-0; 5...Qg6 6.Nc3 Nd7 7.h4 Nf6 8.Ng5 Bg4 9.f3 Be6 10.d4 0-0-0) 6.Nc3 Nb6 7.a4 Be6 8.a5 Nd7 9.Nd5 Bd5 10.ed5 Be7; D) 5.e3 Be6 (5...Be7 6.Nc3 Qe6 7.e4 Qg6 8.h4 Be6 9.h5 Qf6 10.Bc1 Ng4; 5...Qe6 6.h4 Nd7 7.Nc3 f6 8.Bd3 Be7 9.Qe2 Nb6 10.a4 Nd5; 5...Nf5 6.h4 Be6 7.Nc3 h5 8.Ne4 Qg6 9.Neg5 Nd7 10.e4 Nh6) 6.Nc3 Nd7 7.Ne4 Qg6 8.Bd3 Nf5 9.0-0 Be7 10.c4 0-0.

6.Be5 Qb6?? 7.Bd4 (7.Bg7 d6+-) 7...Nf6?? (better 7...Qd4 8.e3 Qa4-+) 8.Bb6+- ab6 9.e3 Kd8 (9...0-0 10.d4+-) 10.Ba6! Ra6 (10...Ra6 11.Nf3 Combination; 10...ba6 11.Nf3 Combination; 10...Na6 11.Nf3 Combination) 1-0. opperwezen (2795) - catask (2685), lichess.org, 2019.

6.Be5 Nc6 7.Bg7 (7...d6 8.c3+-) 1–0. Trkn – guest5467, ICC, 2004.

6.Be5 f6 7.Bc7+/- Nc6 8.e3 Qc5 9.Bf4 Nb4 (9...Nge7 10.Rb1+/-) 10.c3 Nd5 11.Nf3 (11.Bg3!?+-) 11...Nf4+/- 12.ef4 Ne7 13.Bd3 0-0 (13...Qd6 14.Qc2+/-) 14.0-0 Nd5 (14...d5 15.Qc2 f5 16.Ne5+/-) 15.g3 (15.Qc2 Nf4 16.Bh7 Kh8+/-) 15...d6 (15...b6 16.Re1+/-) 16.Qc2 h6 17.Rab1 g5?? (better is 17...Bd7+/-) 18.Rb5+- Qc6 (18...Qc7 19.Rd5 Be6 20.Rd4+-) 19.Nd4 (19...Qc7 20.Rd5+-) 1–0. Wall,Bill – Guest2523, internet, 2004.

6.Be5 f6 7.Bc7 Nc6 8.Nf3 d6 9.c3 Qc5 10.Qa4 b5 (10...Bd7 11.Rb1 Ne5+/-) 11.Qe4 (better is 11.Qf4!? Ke7 12.a4+-) 11...Nge7+= 12.a4 Kd7 13.ab5 Qb5 14.Ba5 Na5? (better is 14...f5 15.Qa4 Qa4 16.Ra4 Bb7+=) 15.Qa8+- Qb2?! (15...Nac6+-) 16.Qa7 Nb7 (16...Bb7 17.Rd1 (17.Qa5 Ra8 18.Qa8 Ba8+=) 17...Nec6 18.Qe3+-) 17.Nd4 Nc6 18.Nc6 Kc6 19.Qa4 Kc7 20.e4 Nc5 21.Qa5 Kd7 22.Bb5 Ke6 23.Bc4 Ke5 (23...Ke7+-) 24.d4 Ke4 25.0-0 (25...Kf5 26.Rfd1+-) 1–0. tromar (1650) – tech17 (1615), GameColony.com, 2002.

6.Be5 f6 7.Bc7+/- d6 8.c3 Qc5 9.Qa4 Nd7 10.Ba5 +/-.

6.Be5 f6 7.Bc7 Ne7 8.e3 Nbc6 9.Rb1 Qa4 10.Ne2 Qa2 11.Rb3 b6 12.Nc3 Qa5 13.Bd6 Ba6?? (better is 13...Qg5+/-) 14.Ra3+- Qg5 1–0. Trkn – guest2819, ICC, 2005.

6.Be5 Qf8 7.Bc7 Na6 (7...Qc5 8.Bf4 d6 9.Nf3 Nf6 10.Be3 Qf5+/-; 7...d6 8.Ba5 Nf6 9.e3 Qe7 10.Nf3 Nc6+/-; 7...Qe7 8.Bf4 Nf6 9.e3 0-0 10.Nf3 d6+/-; 7...Nf6 8.e3 Qe7 9.Qf3 Nc6 10.Qg3 Rg8+/-; 7...Nc6 8.Bg3 d6 9.Nf3 Qe7 10.e3 Nf6+/-) 8.Be5 (8.Bf4 Nb4 9.Nf3 Qc5 10.c3 Qf5+/-) 8...Qe7?? (better is 8...d6 9.Bc3 Ne7+/- (9...Nc5 10.e3 Ne7+/-) 10.e3 Nc5+/-) 9.Bg7 f6 (9...d5 10.e3+-) 10.Bh8 Qf8 11.e3 Ne7 12.Qh5 Ng6 13.Ba6 ba6 14.Rb1 Qh8 15.Qd5 Bb7 16.Rb7 Rd8 17.Nf3 Ne7 18.Qh5 Ng6 19.Nd4 Kf8 20.Nc6! Rc8 21.Qd5 (21...Qg7 22.Rd7+-) 1–0. pierre – spatax, internet, 2008.

7.Bc7 d6 8.Rb1 +=.

7.e3 Qb6 8.Rb1 Qe6 9.Bc7 Nc6 10.Nf3 Qa2 +=.

7.e3 Qc5 8.Bf6 gf6 9.c4 Qa5 10.Qf3 d6 +/-.

7.e3 Nc6 8.Bc7 Qe7 9.Bf4 d6 10.Nf3 0-0 +/-.

7.e3 d6 8.Bf6 gf6 9.Ne2 Nc6 10.Nc3 Qc5 +/-.

7.e3 Qe7 8.Bc7 0-0 9.Bg3 d6 10.Nf3 Be6 +/-.

7.Nf3 Qe7 8.Bc7 d6 9.Ba5 0-0 10.Bc3 Nc6 +=.

7.Bf6 gf6 8.e3 d5 9.Rb1 Qa4?? (better is 9...Qa3+=) 10.Bb5+- (10.Bb5 Qb5 11.Rb5+-) 1–0. Wall,Bill – Konya,Dylan, chess.com, 2011.

7.Bf6 gf6 8.Nf3 d5 9.e3 Rg8 10.c3 Qe7 +=.

4.b5 d5 5.e3 Bc5 6.Rb1 Nh6 7.h3 0-0=+ 8.Nf3 a6 9.bc6+= bc6 10.Rg1?? Bf5?? 11.g4+/- Be4 12.Ne4 de4 13.Ne5 Qd6 14.g5+- Nf5 15.Qg4 Rd8 16.Nc4 Qe6 17.Bc3 g6 18.Be2 Be7 19.h4 Ng7? 20.Bg7 Kg7 21.Qe6 fe6 22.Rg4 c5 23.Re4 Nc6 24.Re6 Rab8 25.Rb8 Rb8 26.Rc6 Rb1 27.Bd1 Kf7 28.Ra6 (28...Kf8 29.a4+-) 1–0. Menzel,J – Palmowski,S, Duisburg Rheinhausen–ch 2nd, 1998.

4.Ne4 Qg6 5.Ng3 f6 6.e3 Bb4 7.Bd3 Qf7 8.c3 Ba5 9.Nf5 Bc7 10.Ba3 g6 11.Nd6? (better is 11.Be2+=) 11...Bd6–+ 12.Bd6 Qe6 (better is 12...Qd5 13.Bb8 Qg2–+ (13...Rb8?! 14.Bf1–/+; 13...Qd3?! 14.Bc7–/+)) 13.Ba3+= d5 Black prepares e4 14.f3 e4 15.fe4 de4 16.Bc2 Nd7 17.Bb3 Qf5 18.g4 (18.Nh3 Ne5 19.Nf2 Be6+=) 18...Qe5 19.d4 ed3! 20.Qd3 Nc5 21.Bc5 Qc5 22.0-0-0 Qe7 (22...Bg4?! 23.Qe4 Ne7 24.Qg4 Qc3 25.Kb1+=) 23.h3 Be6 24.Be6 Qe6 25.Ne2 Ne7 26.Nf4? (better is 26.Rd2!?–/+) 26...Qa2–+ 27.Rd2? (better is 27.Qd6 Kf7 28.Rd2 Qa1 29.Kc2 Qa4 30.Kb2–+) 27...Qa1 28.Kc2 (28.Qb1 Qc3 29.Kd1 Qe3 30.Re1 Qf3 31.Kc2–+) 28...Qa2 (better is 28...Qh1 29.Qd7 Kf8–+) 29.Kd1?? (29.Kc1 Qa3 30.Kb1–+) 29...Qb3 30.Ke2 g5 (30...b5 31.Rb1 Qa3 32.Qd7 Kf8=) 31.Rb1+= Qa3 32.Qd7 Kf7?? (32...Kf8 33.Ne6 Kf7 34.Rb7 Qa6 35.Kf2 Rhe8+-) 33.Qe6+- Kg7 (33...Ke8 34.Nh5 Qa6 35.Ke1 c5+-) 34.Nh5 Kh6 35.Qf6 Ng6 36.Qg7 1–0. Tagirov,Kajum K (1920) – Tupeev,Salavat, Ufa Dautov Memorial op, 2009.

4.a3 Ba5!?–/+.

4.a3 Bc5 5.e3= h5 (5...Qe7 6.Nf3 d6 7.Be2=+) 6.Qf3 (6.Nf3!? Nc6 7.Nc3+=) 6...Qe6 (6...Qg6 7.Nc3=+) 7.g3 (7.Nc3 d6=+) 7...f6 (7...Nf6–/+) 8.Qd5 (better 8.Nc3!?=+) 8...Qb6–/+ 9.Bc3 (9.Ra2!?–/+) 9...Ne7–+ 10.Qe4 (better 10.Qg2–+) 10...Bd6?? (better 10...Nbc6!?–+) 11.Bg2 (11.d4 ed4 12.ed4=+) 11...g6 (better 11...Nbc6!?–/+) 12.Ne2 (12.d4 ed4 13.ed4 c5+=) 12...f5 (better 12...h4 13.d4 f5+=) 13.Be5?? (better 13.Qh4 Qb3 14.c5 Bc5 15.Be5+-) 13...fe4–+ 14.Bh8 Na6 (14...Nbc6 15.Nbc3–+) 15.Bd4 (15.Nbc3 Nc5 16.0-0 Qa6–+) 15...Qb3 16.0-0 Qc4 17.Be4 (17.Nbc3–+) 17...Qe2 18.d3 (18.Nc3 Qc4 19.Rfc1 Qe6–+) 18...Qg4 (18...Nc5 19.Nc3 Qg4 20.Bc5 Bc5 21.Rfb1–+) 19.Bg2 (19.Nc3 Nc5 20.f3 Qh3–+) 19...h4 (better 19...Nc6 20.Bh8–+) 20.f3 (20.Nc3 Bc5 21.Bc5 Nc5–+) 20...Qh5 (better 20...Qe6!? 21.f4 c5 22.Bh8 hg3 23.Nc3 gh2 24.Kh2–+) 21.f4 (21.g4 Qa5 22.Nc3 Bc5–+) 21...hg3 22.hg3 Qg4 (better 22...Nf5 23.Nc3–+) 23.Kf2 (23.Nd2 Nc6 24.Kf2 Nc5 25.Bc5 Bc5–+) 23...Nf5 24.Rh1 Qg3 25.Kg1 Nh4 (better 25...Nd4 26.Rh8 Kf7 27.Nc3 Qe3 28.Kh1–+) 26.Rh2 Nf3 (26...Nf3 27.Kh1 Qh2) 0–1. pirateking – btom2004, gameknot.com, 2014.

4.Nf3 Nc6 5.a3 Be7 –/+.

4.Nf3 Nc6 5.e3 a6 6.Be2 b5 7.0-0 Nh6 8.cb5+= ab5 9.Bb5 Bb7 10.Bc6 Bc6 11.Be5+/- Qg6 12.a3 Bc5 13.d4 Ba7 14.Nc3 d6+/- 15.Nh4 Qg5 16.Nf3 Qh5 17.Bg7?? Rg8=+ 18.Bf6?? Qg6 19.Ng5 Qf6–/+ 20.Nh7?? Qh4 21.d5–/+ Ng4 22.Nf6?? Qf6 23.dc6 Qg6 24.Qf3 Ne5 25.Qh3 Rb8 26.Nd5= Rb5?? 27.Nc7 Kd8 28.Nb5 Nc6 29.Qg3 1–0. gtate (1800) – boboseto, net–chess.com, 2002.

4.Nf3 Nc6 5.e3 d6 6.Nc3 Bc3 7.Bc3 Nge7 –/+.

4.Nf3 Nc6 5.e3 d6 6.Be2 Qg6 7.Nh4 Qg5 8.g3 Bh3 9.Qb3 Nge7 10.Nc3 Nf5 11.0-0-0 Nh4–+ 12.f4 ef4 13.ef4 Qc5 14.Ne4 Qb6 15.Bg7 Bg2 16.Nf6=+ Ke7 17.Rhe1+= Nd4 18.Bg4 Kd8 19.Bh8?? Nb3–+ 20.Kc2?? Nd4 21.Kd3 c5 22.Re8= Kc7 23.Re7 Kc6 24.Bd7 Kc7 25.Bb5 Kd8 26.Re8= Kc7 27.Re7 Kd8 28.Re8= Kc7 29.Re7 ½–½. gtate (1900) – bvboucher (2070), net–chess.com, 2006.

4.c3 Ba5 5.e4 (better is 5.de5!? Qe5 6.Nf3–/+) 5...ed4–+ 6.Qf3 Nc6 7.Qf6 Nf6 (7...gf6?! 8.Nf3–/+) 8.f3 (8.Bd3 Ne5 9.Kd2 d5 10.ed5 Nd5–+) 8...d5 9.Bb5 a6 10.Bc6 bc6 11.a4 (11.Ne2 Rb8 12.Ba3–+) 11...Rb8 12.Ra2 (12.Ba3 de4 13.fe4 Ne4 14.Nf3–+) 12...de4 13.Ne2 c5 14.Na3 (14.Nf4 dc3! 15.Nc3 Bc3 16.Bc3 Rb1 17.Kf2 Rh1 18.Bf6 gf6 19.fe4 Rh2–+) 14...Be6 15.Ra1 Rb2 16.Nf4 (16.Rb1 dc3 17.Rc1 c2 18.Kf1 Bb3–+) 16...Bc3 17.Kf1 ef3 18.gf3 Nd5 19.Ng2 Bh3 20.Rg1 Ne3# 0–1. Elsner,David – Rasch,Harald (1930), remoteschach.de, 2004.

4.c3 Ba5 5.de5 Qe5 6.Nf3 Qb5 7.Qb3 Qb3 8.ab3=+ Ne7?? 9.Ra5+- Nbc6 10.Ra1 Nf5 11.Ba3 d6 12.e4 Nfe7 13.Bb5 0-0 14.Bc6 Nc6 15.0-0 Be6 16.Nbd2 Rfd8 17.Ng5 Re8 18.Ne6 fe6 19.Nc4 e5 20.f4 b5 21.Ne3 ef4 22.Rf4 ½–½. deepattack – octopus (1875), net–chess.com, 2003.

4.Nf3 d6 5.a3 Bc5 (5...Ba5 6.Bc3 Bc3 7.Nc3–/+) 6.Bc4 (better is 6.Nc3!? Bb6 7.Nd5=) 6...Be6 7.Be6 fe6 (7...Qe6 8.d4 ed4 9.Nd4 Bd4 10.Bd4=+) 8.Nc3 (8.d4!? ed4 9.ed4=) 8...Nc6 9.Ne4 Qe7 10.Nc5 dc5 11.0-0 (11.Ne5 Ne5 12.Be5 Qg5+=) 11...0-0-0 (11...e4 12.Ne5 Ne5 13.Be5=) 12.Qe2 (better is 12.Ne5!? Ne5 13.Be5+=) 12...e4 13.Ne1 Nf6 14.c3 (14.f3!?=+) 14...Rhg8 (14...Rd6 15.c4–/+) 15.d4 cd4 16.cd4=+ g5 17.Rb1 g4 18.g3 h5 19.Bc3 Nd7 20.Ng2 e5 21.Bb4 Qe6 22.de5 Nde5 23.Nh4 Nf3 24.Nf3 gf3 25.Qb2 h4 26.Bc5 b6 27.a4 hg3 28.fg3–+ Qh3 29.a5 Rg3 30.hg3 Qg3 31.Kh1 Rh8?? 32.Qh2 Rh2 (32...Qh2?!=) 0–1. Slavisa2 – dopedawg, Live Game Caissa's Web, 2004.

4.Nf3 d6 5.c3 Ba5 6.Qa4+- Nc6 7.Bb5 Nge7 (better 7...Bd7!? 8.Bc6 Bc6 9.Qa5 Qg6+-) 8.Qa5+- Bd7 (8...0-0 9.Qa4+- (9.Qc7? Nd5 10.Qc6 bc6 11.Bc6 Rb8 12.Bd5 Rb2–+)) 9.Qc7 Qf5? (better 9...Rc8 10.Qb7 Rb8+-) 10.Na3 (10.Qd6 e4 11.Nd4 Nd4 12.Bd7 Qd7 13.Qd4 Qd4 14.cd4 Nd5+-) 10...0-0 (10...Qg6 11.Nc4 (11.Qb7?! Rb8 12.Nh4 Rb7 13.Ng6 hg6+-) 11...Nc8 12.Qb7+-) 11.Nc4 Nd5 (11...Rfc8 12.Qd6 (12.Qb7?! Rab8 13.Qa6 Qg4+-) 12...Ng6 13.0-0+-) 12.Qd6 (12.Qb7?! Rab8 13.Bc6 Rb7 14.Bb7 Qd3 15.Nd6 Bg4+-) 12...Nb6 (12...e4 13.Nh4 Qg4 14.Qd5+-) 13.Bc6 Bc6 14.Nb6 ab6 15.Qe5 Qc2 16.c4! Bf3 (16...Qc4 17.Qg7) 17.Qg7 1–0. guestczqc – guestpksf, internet free game, 2018.

4.Nf3 d6 5.c3 Bc5=+.

4.c3 Ba5 =+.

4.c3 Bc5 5.Nf3? g5?? 6.d4+= Bd6 7.Qd2 g4 8.de5+/- Be5 9.Nd4 c5 10.Nf5 Ne7 11.Ne7 Qe7 12.g3 Bd6 13.Qe2 Nc6 14.Qg4 Ne5 15.Qg7 Rf8 16.Qh7 c4 17.Be2 Nd3 18.Bd3+= cd3 19.0-0 Qg5 20.f4 Qc5 21.Kg2 Qe3 22.Bc1 Qe2 23.Rf2 Qe1 24.Nd2?? Ba3?? 25.Rf1 Qf1?? 26.Kf1 Bc1 27.Rc1 b5 28.a3 d6 29.e5 d5 30.Qd3 Rb8 31.Qd5 Rh8 32.Kg1 Be6 33.Qd6 Rb6 34.Qc7 Ra6 35.Qb8 (35...Ke7 36.Qb7 Kf8 37.Qa6+-) 1–0. Gregor123 – tigga, mySchach.de, 2004.

4.Nc3 Ne7 –/+.

4.Nf3 Bc5 5.Bc4 Nh6 6.d4 ed4 7.Bd4 Bd4 8.Nd4 0-0–/+ 9.Nc3 d5?? 10.Nd5+= Qe5 11.0-0 Ng4 12.g3 Qe4?? 13.Re1+- Nf2 14.Kf2 Qg4 15.Ne7 Kh8 16.Nc8 Qc8 17.Bd3 f5? 18.Qh5 g6? 19.Qh6 Nd7 20.Re7 Nf6 21.Ne6 Ng4–+ 22.Kg2 Nh6 23.Ng5 Nf7! 24.Nf7 Rf7! 25.Rf7 f4! 26.Re1 f3! 27.Kf3 b5 28.Ree7=+ Qb7?? 29.Kf2 Qb6 30.Ke2 Qc6 31.Rh7+= Kg8 32.Rhg7 Kf8?? 33.Rgf7 Kg8= 34.Rg7 Kf8 35.Rgf7 ½–½. guest1 – guest246, ICC, 1999.

4.Nf3 Bc5 5.Be5+= Qg6 6.Nc3 Nh6 7.Bd3 Ng4 8.Bg3+= 0-0 9.0-0 d5? 10.ed5 Re8?? 11.Bg6 hg6 12.Ng5 Nd7 13.Qg4 Ne5 14.Qh4 (14...Bd6 15.Rfe1+-) 1–0. guest440 – guest497, ICC, 1999.

4.Nf3 Bc5 5.Be5 Qg6 6.Bc7 Qe4 7.Be2 Qc6 +=.

4.Nf3 Nc6 5.a3 Ba5 6.Bb5 –/+.

4.Nf3 d6 5.a3 Bc5 6.d4 ed4 (7.Bd4 Bd4 8.Qd4 a6–/+) 0–1. AndrewDev – mrj, internet, 2007.

4.Nf3 d6 5.c3 Bc5 =+.

4.Nf3 d6 5.Be2 Be6 6.0-0 Ne7 7.d4 Bg4 8.de5 Qf4 9.ed6 Bd6= 10.h3?? Bf3–+ 11.g3 Be2 12.Qe2 Qh6 13.Qf3 Qh3 14.Qf7 Kf7 (15.Nd2 Nbc6–+) 0–1. gtate (1995) – veera (2225), net–chess.com, 2004.

4.Be5 Qf5 5.b5 Nb4 6.Na3 d6 7.Bd4 c5 8.bc6 Nc6 9.e3 Nd4 10.Nd4 Qa5 11.Bb5 Bd7? 12.Bd7 Kd7 13.Qf3 Rc8 14.Nab5 Qa6 15.Qf7 Be7 16.Qf5 Kd8 17.Ne6 Kd7 18.Nc5 Kd8 19.Qd7# 1–0. MrkT – braddersp, internet, 2005.

4.Be5+/- Qf5 5.b5 Nc5 6.d4 Ne4 7.e3 d6 8.Bf4 d5 9.Bd3 Bb4 10.Nfd2 Bd2 11.Nd2+- Ngf6? 12.f3 Qh5 13.fe4 Qd1 14.Rd1 Ng4 15.ed5 0-0 16.0-0 Bd7 17.h3 Nf6 18.d6 cd6 19.Bd6 Rfe8 20.Rde1 Rac8 21.c4 a6 22.a4 a5 23.Be5 Nh5 24.g4 Nf6 25.Bf6 gf6 26.Rf6 Rf8 27.g5 Bh3 28.Rh6 Rce8 29.Bh7 Kg7 30.Nf3 Rh8 31.Rh3 Rh7 32.Rh7 Kh7 33.Ne5 f6 34.gf6 Rg8 35.Kh2 Rg5 36.Nf7 Rh5 37.Kg3 Kg6 38.Nd6 Kf6 39.Nb7 Rg5 40.Kf4 Rf5 41.Ke4 Rh5 42.Nd6 Rh4 43.Kf3 Rh3 44.Kg4 Rh6 45.e4 Rg6 46.Kf4 Kg7 47.e5 Kh6 48.Kf5 Rg5+- 49.Kf6 Rg6 50.Kf5 Rg5 51.Kf4 Kh5?? 52.e6 Rg4 53.Kf5 Rg5 54.Kf6 Rg6 55.Kf7 Kh6 56.Rh1 Kg5 57.e7 Rd6 58.e8Q Rf6 59.Ke7 Kf5 60.Rf1 Ke4 61.Rf6 Kd4 62.Qd7 Kc4 63.Rd6 Kb4 64.Qc6 Ka3 65.Rd3 Ka2 (66.Qc2 Ka1 67.Rd1#; 65...Kb2 66.Qc3 Ka2 67.Rd2 Kb1 68.Qb2#). TriAngel – FrozenPond, ICC, 1999.

4.Be5+/- Qf5 5.Nc3 Nf6 6.e4 Qg6 7.Ba6 ba6 +-.

4.Be5+/- Qg6 5.a3 +/-.

4.Be5 Qb6 5.Bg7 Bc5 6.e3 f6 7.Bh8 Bf8 8.Bc4 (better 8.Nc3 Qc5+-) 8...Nh6 (8...Ne7 9.Nd4 Ng6 10.Qh5+-) 9.0-0 (better 9.Nc3!? Qc5 10.Bb3 Be7+-) 9...Qc5 (9...Nf7 10.Nd4 Nh8 11.Qh5 Ng6 12.Nc3+-) 10.Qe2 (10.Bb3 Be7 11.Nc3 b5+-) 10...Qe7 (10...d5 11.Bb3 Nd7 12.Nc3+-) 11.Nc3 Nc6 (11...c6 12.Nd4 Bg7+-) 12.Nd5 Qd6 13.Nf6 (better 13.Nd4 Ne7 14.Nb5 Qc6 15.Nbc7 Kd8 16.Bf6 Qc7 17.Nc7 Kc7+-) 13...Kd8 14.Nd4 (14.Ng5 Be7 15.Ngh7 Qe5+-) 14...Ne5 15.Nd5 (better 15.Qh5!? Ng6 16.Bd3 Qc5 17.Bg6 Qh5 18.Bh5 Be7+-) 15...Neg4 16.g3 (16.f4 c6 17.Nc3 Qe7+-) 16...c6 17.Nf4 b5 (17...Ne5 18.Rab1+-) 18.Bb3 (better 18.Bd3 Bb7+-) 18...c5 (18...Bb7 19.e4 Be7 20.c3+-) 19.Nb5 Qc6 20.Bd5 Qf6 21.Bf6 (21.Bf6 Nf6 22.Ba8+-) 1–0. retiponziani (1825) – McSquare (1780), ChessWorld.net, 2014.

4.Be5 Qg6 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Qg5 4.Nf3 Qg6).

4.Be5 Qh6 5.e3 d6 6.Bb2 Nf6 7.Bc4 (7.c3 Bc5=) 7…0-0 (7...0-0 8.0-0 d5=). Crusader Rabbit (1845) – kirklandlake (1780), ChessWorld.net, 2014.

4.Ne5 Nc6 5.Nd3 Qg6 =.

4.Ne5 d6 5.Nd3 Qb2 6.Nb2 Nf6 7.c3 Ba5 (7...Bc5 8.d4 Bb6 9.e3+-) 8.e3 (8.Qa4!? Nc6 9.Nc4 Bb6+-) 8...0-0 (8...c6 9.d4+-) 9.Nc4 Bb6 10.Nb6 ab6 11.g3 (11.d4!? Be6+-) 11...Be6 12.Bg2 c6 (12...Ba2 13.Qc1 Nbd7 14.d4+-) 13.0-0 (13.d4 Nbd7+-) 13...Ba2 14.d4 Bb3 15.Ra8 Bd1 16.Rd1 d5 (16...b5 17.Ra7+-) 17.Nd2 (17.Ra7 Nbd7+-) 17...Nfd7 (17...b5 18.Ra7+-) 18.c4 (18.Ra7 b5+-) 18...dc4 19.Nc4 Nf6 20.Nb6 Rd8 21.Rb1 g6 22.Nc4 Kg7 23.Rb7 Nfd7 24.Rd7! Rd7 25.Rb8 Ra7 26.Rb1 Rc7 27.Ne5 c5 28.d5 Re7 29.Nc6 Rc7 30.d6 Rc8 31.d7 Ra8 32.Nb8 c4 33.d8Q (33...Ra7 34.Qd4 Kh6 35.Qa7 Kg7 36.Qd4 f6 37.Rb7 Kh6 38.Qh4; 33.Ba8 h5 34.d8Q Kh7 35.Nd7 Kh6 36.Qf8 Kg5 37.Qf7 Kh6 38.Qf8 Kg5 39.Qf4) 1–0. pinecrest1981 – aazv, Live Game Caissa's Web, 2005.

5.e3?? Bc5?? 6.d4 (6.Bg7 d5+-) 6...d6?? (better is 6...Bb4 7.c3 Bf8 8.Bc7 Nf6+/-) 7.Bg3 (better is 7.Bg7 h5 8.Bh8+-) 7...Bb6= 8.c4 Bd7 9.Nc3 c5? (9...Nf6 10.Bd3=) 10.d5 (10.Ng5 Qe7 11.Nge4 Ba5 12.Nd6 Kf8+-) 10...Qf6? (10...Qe7 11.Bd3+=) 11.Qd2 (better is 11.Ne4 Ba5 12.Nfd2+-) 11...Ba5+= 12.Rc1 Na6 13.a3 Rb8 14.Be2 Bb5?? (better is 14...Ne7+=) 15.cb5+- (15.cb5 Nc7 16.e4+-) 1–0. Fournier,Frederic (2075) – barsaoeoe, Active (1/0), 2005.

5.e3?? Nf6 6.Bc7 Nc6 7.c3 +=.

5.Bg7+- d5 6.Nd4 Bc5 (6...Qg6 7.Bh8 Nc6+- (7...Ne7 8.Nc3 Nbc6 9.Nc6) 8.Nc6 bc6 9.c4) 7.Ne6 Be6 8.e4 de4 (8...Nc6 9.Bh8) 9.Nc3 Bf5 10.Bh8 (10.Bh8 Nd7 11.Qe2+-) 1–0. Pierre – Teett, internet, 2020.

5.Bg7+- f6 6.Bh8 Bc5 7.d4 Bb4 8.c3 Ba3 (8...Ba5+-) 9.Na3 Qe7 10.Nc4 d5 11.Ne3 c5 12.Nd5 Qd6 13.e4 (better 13.dc5 Qc5 14.Qb3 Nd7+-) 13...cd4 14.Nd4 Nc6 15.Qh5 (15.Qh5 Kf8 16.Qh7+-) 1–0. Pierre – Erredmann, internet, 2020.

5.Bg7+- f6 6.Bh8 Nc6 7.c3 (7.Nc3 Nge7 8.Nb5 Ba5+-) 7...Bc5 (7...Bd6 8.Qb3+-) 8.d4 Bd6 (8...Bb6 9.Nbd2+-) 9.d5 Qe4 (9...Qe7 10.dc6 dc6 11.Nbd2+-) 10.dc6 dc6 11.Nbd2 Qd5 (11...Qg6 12.Qb1+-) 12.e4 Qc5 13.Bc4 Nh6 14.Bf6 Ng4 15.Bd4 Qa5 16.h3 b5 17.hg4 bc4 18.Nc4 Qa6 19.Nd6 cd6 20.Rh7 c5 21.Bf6 Bg4 (21...Be6 22.Re7 Kd8 23.Re6 Kc8 24.Qd5 Kc7 25.Qa8 Kb6 26.Rd6 Ka5 27.Ra6 Kb5 28.Qc6 Kc4 29.Rc1 Kd3 30.Qd5) 22.Qd5 Rd8 (22...Qe2 23.Ke2 Bf3 24.Kf3 Rb8 25.Qf7) 23.Qf7 1–0. marus1 – jizard, internet, 2001.

5.Bg7+- f6 6.Bh8 d5 7.Nc3 (7.Nd4 Qe5 8.c3 Bd6+-) 7...c5 (7...Nc6 8.Nb5 Ba5 9.Nbd4 Nd4 10.Nd4+-) 8.Nb5 (8.e3 Bc3 9.dc3 Nd7+-) 8...Qe7 (8...Ba5+-) 9.Bf6! Nf6 (9...Qf6 10.Nc7; 9...Nf6 10.e3) 10.e3 (10.g3 Ne4+-) 10...Nc6 11.Nh4 Bg4 12.f3 Bh5?? 13.Be2 d4 14.Nf5 Qe5 15.Ng7 Kf7 16.Nh5 de3 17.f4 Bd2 18.Kf1 Qf5 19.Nd6 Ke6 20.Nf5 Kf5 21.Nf6 Kf6 22.Bc4 Nd4 23.g3 Rd8 24.Qh5 e2 25.Be2 Ne2 26.Ke2 Bc3 27.Qg5 Kf7 28.Qd8 Ba1 29.Ra1 (29...c4 30.Rd1 h5 31.f5 Kg7 32.Rd7 Kh6 33.Qf6) 1–0. Nautiluschess – qwendyl, ICS blitz, 2001.

5.Bg7+- f6 6.Bh8 Ne7 7.Nc3 Nbc6 8.Nb5 +-.

5.Bg7+- f6 6.Bh8 Nh6 7.c3 Bc5 8.e3 b6 (8...Kf8 9.d4 Be7 10.Nfd2+-) 9.Nd4 Bd4 10.Qh5 Nf7 11.cd4 Ba6 (11...Nc6 12.Nc3 Nd4 13.Nd5+-) 12.Nc3 Bf1 13.Rf1 Na6 14.Qf3 0-0-0 (14...c6 15.Bf6 d5 16.g4+-) 15.Bf6 Rf8 (15...Rg8 16.Qa8 Nb8 17.Nb5+-) 16.Qa8 Nb8 17.Nb5 Qf6 18.Na7 Kd8 19.Qb8 Ke7 20.Qc7 Ng5 21.Rb1 Ne4 22.Rb6 Qf5 23.Rb5 Qf6 24.Re5 Kf7 25.Qd7 Kg8 26.Re4 Qg6 27.Rg4 1–0. Janek – terfig, internet, 2017.

5.Bg7+- Nf6 6.Bh8 Nc6 7.c3 Bc5 8.e3 b6 (8...d5 9.d4 Bd6 10.Nbd2+-) 9.a4 (9.d4 Be7+-) 9...Bb7 10.Qc2 0-0-0 11.Bf6 Qf6 12.Be2 (12.d4!? Be7+-) 12...h5 13.d4 Bd6 14.a5 (better is 14.Nbd2 Be7+-) 14...ba5 (14...Na5 15.Nbd2+-) 15.Na3 (15.Nbd2 Qg6 16.Bd3 Qg4+-) 15...a6 16.Nc4 h4 17.Nd6 Qd6 18.h3 f6 19.c4 Qb4 20.Qd2 Qd2 21.Nd2 (21...Nb4 22.0-0+-; 21.Kd2!? Rh8+-) 1–0. Scirocco – A77, Live Game Caissa's Web, 2004.

5.Bg7+- Nf6 6.Bh8 Nc6 7.Nc3 +-.

4.a3 e4 5.Nd4 =.

4.a3 e4 5.Nh4 Nf6 =.

4.a3 Nf6 5.e3 Nc6? 6.c4 a5 7.b5 Ne7 8.Ne5 Nf5 9.Nc3+- Qe6 10.Na4 Bd6 11.Nf3 0-0? 12.Qb3 Ne4 13.d3?? Nc5 14.Nc5+/- Bc5 15.Ng5 Qg6+= 16.Ne4 b6 17.d4 a4 18.Qd1 Be7 19.Nc3 Bb7= 20.d5 Rae8 21.Qf3 Bg5?? 22.Bd3+= Re5?? 23.Ne4 Rfe8?? 24.Be5 Re5 25.Ng5 Qg5 26.Bf5 Rf5 27.Qe4 Qf6?? 28.Qe8# 1–0. mtr – Jonsh, internet, 2001.

4.a3 Nh6? 5.Ne5 d6 6.Nc4 Qc6 7.e3. coloplayah (2060) – mdf (1800), net–chess.com, 2007.

4.e3 Qb4? 5.Ba3?? Qb6 6.Bf8 Kf8 7.Nc3 d6 8.Nd5 Qc6 9.Nb4 Qc5–/+ 10.Nd3 Qc6 11.Nb4=+ Qc5 12.Nd3 Qc6 13.Nb4=+ Qc5 14.Nd3= Qc6 ½–½. guest1444 – guest83, ICC, 1999.

4.e3 e4 5.Ne5 Nf6 +=.

4.Be5 Qb4 (--> 2.Bb2 Qg5 3.Nf3 Qf4 4.Be5 Qb4).

4.Be5 Bb4?? 5.Bg7 1–0. mtr – symbol, internet, 2001.

4.Be5 Nc6!? 5.c3 a5 =.

4.Be5 Nc6 5.Nc3 Ne5 6.Ne5 Bb4 +=.

4.Ne5 Qb4 5.Nd3 Qa5 +/-.

4.Ne5 Qb4!? 5.Nd3 Qe7 +=.

4.Ne5 Bb4 5.Nd3 Ba5?? (better 5...Bf8+=) 6.Bg7+- 1–0. Pierre – John_Cson, internet, 2020.

4.Ne5 h5 5.a3+/- Rh6 6.e4 Rf6 7.d4 d6 8.Nc4 Qc6 9.Bd3 Rg6 10.0-0 d5?? 11.Ne5 Qe6 12.Nc3 Qf6 13.Nd5 Qg5 14.Nc7 Kd8 15.Nf7 Kc7 16.Ng5 Rg5 17.Qf3 Nd7 18.Qf4 Kb6 19.d5 Re5 20.Be5 Ne5 21.Qf8 Nh6 22.Qc5# 1–0. michaelbuss – spaceman_ollie, ChessWorld.net, 2009.

4.a3 a6 5.e3 Bd6 6.c4 Be7? (better is 6...Nh6+=) 7.b5+- Nd8 8.Be5 (8.Ne5?! ab5 9.cb5 d6+/-) 8...Qf5?? (8...Qh6 9.Bc7 Ne6 10.Bg3+-) 9.Bc7 (better is 9.Bg7 Bf6 10.Bh8 Bh8 11.d4+-) 9...Nf6 10.d4 ab5 11.cb5 0-0 12.Bd3 Qg4 13.Bg3 Ne4 14.Be4 (14.Nfd2!? Qd1 15.Kd1 Nd2 16.Kd2 d5+-) 14...Qe4 15.0-0 Bb4 16.Nbd2 (16.ab4?! Ra1 17.Nbd2 Rd1 18.Ne4 Rf1 19.Kf1 d5+/-) 16...Bd2 17.Qd2 Ne6 18.a4 b6 19.Rfc1 (19.Bd6!? Re8 20.d5 Nc5 21.Bc5 bc5+-) 19...Bb7 20.Qb4 Qf5 21.Ne5 (21.Ne1 Qd5+-) 21...Ng5? (better is 21...Qe4 22.f3 Qe3 23.Kh1 Qd4 24.Qd4 Nd4 25.Nd7 Nb3+-) 22.f3+- f6 23.Nc4 Qd3 (23...Bf3 24.Rf1 (worse is 24.gf3 Qf3 25.h4 Qg3 26.Kf1 Qf3 27.Kg1 Qg4 28.Kf1 Ne4–/+) 24...Qe4 25.Rf2+-) 24.Rd1 (24.Ra3 Qg6 25.Nb6 Rad8+-) 24...Qg6 (24...Qe2 25.Nb6 Bf3 26.Bf2+-) 25.Nd6 (25.Nb6!? Rad8+-) 25...Bd5 26.e4 Bf7 27.Nf7 Qf7 28.d5 f5 29.e5 Rfe8 30.f4 Ne4 31.Re1 Ng3 32.hg3 Qh5? 33.Kf2 Qg4 34.Re3 Rac8 35.Rae1 Rc2 36.Kg1 Qh5 37.Qb3 (37.Qb3 Rc5 38.e6+-) 1–0. Fournier,Frederic – maelita, Active, 2008.

4.a3 d5 5.b5 Nd4 6.e3 Nf3 7.Qf3 Qf3 8.gf3 f6 9.a4 Bc5 10.Be2 Bh3 11.c4 d4 12.Bd3 0-0-0 13.Ke2 g6 14.Na3 (14.Ba3 Bb6+=) 14...f5 (better is 14...Nh6!?–/+) 15.Rhg1= Nf6 16.ed4?? (16.Rg3 e4 17.fe4 fe4 18.Be4 (worse is 18.Rh3 ed3 19.Ke1 Rhf8–/+) 18...Ne4 19.Rh3 de3 20.Bh8 (20.fe3?? Rd2 21.Kf3 Re8–+) 20...Rd2 21.Kf3 Ng5 22.Kg3 Nh3 23.fe3–+) 16...ed4–/+ 17.Nc2 Rhe8 18.Kd1 g5?? (18...Nh5 19.Ba3 Ba3 20.Ra3–/+) 19.Re1?? (better is 19.Rg3 g4 20.Bf5 Kb8 21.fg4+-) 19...Re1–/+ 20.Ke1 Re8?? 21.Kd1= f4 22.Ba3 Bb6 23.Nb4?? Bg2–/+ 24.Kc2 Bf3 25.Bb2 Be2 26.Be2–/+ Re2 27.Nd5? Nd5–+ 28.cd5 Rf2 29.Re1 Rh2 30.Re8 Kd7 31.Rg8 h6 32.Rg7 Kd6 33.Kd3 Kd5 34.Rd7 Ke6 35.Rh7 Rh3 36.Kc2 d3 37.Kb3 Kf5 38.Bc3 Kg4 39.Re7 f3 40.Rf7 f2 (40...f2 41.Rf2 Bf2–+) 0–1. Fournier,Frederic – COMP (1635), ChessOK.com, 2013.

4.a3 d5 5.e3 a6 6.c4 Be6 (6...dc4 7.Bc4 Bg4 8.d3=) 7.c5 (7.b5 ab5 8.cb5 Na5 9.Be5 Qe7+/-) 7...b6 (better is 7...Bg4!?=) 8.Qa4 Bd7 9.b5 Na7 10.c6 Bg4?? (10...Bc8!? 11.Be5 ab5 12.Bb5 Qg6+/-) 11.Be5 (better is 11.Qg4 Bd6 12.Qd7 Kf8 13.Nc3+-) 11...Qf5 12.Bc7 Bf3 13.gf3 Qf3 14.Rg1 Qf6 15.d4 Be7?? (15...Nb5 16.Bb5 Rc8 17.Qa6 Rc7+-) 16.Bb6 (better is 16.Qa6 Qf5 17.Qb7 Qc8 18.Bb6 Bd6 19.Rg7 Ne7+-) 16...Nc8 17.Bc7 Bd8 18.Bd8 Qd8 19.Nc3 Nd6 20.Nd5 ab5 21.Qb4 Ne7 22.Ne7 Qe7 23.Bb5 Rb8 24.a4 0-0 25.Qc5 f5 26.Qd5 Kh8 27.Rc1 Qc7 28.Qe5 Rf6 29.Ke2 Re8 30.Qf4 Re4 31.Qg3 Rg4 32.Qe5 Re4 33.Qg3?? Rg4 34.Qf3 Rh4 35.Rg2 h6 36.Rcg1 Ne8 37.h3 Qe7 38.d5 Qc5 39.Rd1 Nc7 40.d6! Rd6 41.Rd6 Nb5 42.Rd8 Kh7 43.ab5 Qb5 44.Rd3 Rc4 45.Qd5 Rc2 46.Kf3 Rc5 47.Qd7 Rc6 48.Qg7 1–0. Feng,Jason – Ventura,Bob, SN–2010-0-00257, 2010.

4.a3 d6 5.b5 Nce7 =.

4.a3 d6 5.e4 Bg4 (5...Qg6 6.Nc3=) 6.Bc4 (6.Be2 Nge7=) 6...0-0-0 (6...Qg6 7.d3=) 7.Nc3 (7.h3 Bd7=) 7...Nh6 (7...Nd4 8.Be2 Ne2 9.Qe2+=) 8.h3 (8.Nd5 Qg6 9.Qe2 f5 10.ef5 Nf5=) 8...Bf3+= 9.gf3 Nd4 10.Nd5 Qg6 (10...Qf3 11.Qf3 Nf3 12.Ke2+=) 11.Bf1 (11.Ne3 f5=) 11...c6 (11...f5 12.c3 Ne6 13.Qe2=) 12.Ne3 Be7 (12...f5 13.Bd3 Qh5 14.Be2+=) 13.Ng2 (better is 13.c3!? Ne6 14.b5=) 13...f5 (better is 13...d5 14.Bd4 ed4–/+) 14.Nh4?? (better is 14.c3 Ne6 15.Qe2–/+) 14...Bh4–+ 15.Rh2 fe4 16.Bg2 (16.Bd4 ed4 17.fe4 Qe4 18.Be2–+) 16...ef3 (better is 16...Nf3 17.Bf3 Qg1 18.Ke2 ef3 19.Kd3 Qh2 20.Qf3–+) 17.Bf1 Nc2 (17...Nc2 18.Qc2 Qc2–+) 0–1. colamiju – bogdans (1795), net–chess.com, 2006.

4.a3 d6 5.h3 Be7 6.e4 Nd4 (6...Qf4 7.Nc3=) 7.Nd4 ed4 8.Bc4 Qe5 9.0-0 (9.d3 Nf6 10.0-0 c5+=) 9...Nf6 (9...Qe4!? 10.Re1 Qf4=) 10.d3+= 0-0 (10...c5!?+=) 11.f4+/- Qh5 12.Rf3 (better is 12.Qh5 Nh5 13.Bd4+/-) 12...Bg4?? (better is 12...b5 13.Ba2 c5=+) 13.hg4+- Ng4 14.Rh3 (14.Bd4?! Qh2 15.Kf1 Qh1 16.Ke2 Qg2 17.Bf2 Bf6+-) 14...Qg6 15.f5 Qg5 16.Bc1 Ne3 17.Be3 de3 18.Qf3 Bf6 19.c3 c6 20.d4 d5 21.Be2 de4 22.Qh5 Qh5+/- 23.Rh5 g6 24.Rh3 Bg5 25.fg6 fg6 26.c4 Rf2 27.Bg4 e2?? 28.Kf2+- Rf8 29.Ke2 e3 30.Nc3 Rf2 31.Kd3 Rd2 32.Ke4 Rg2 33.Be6 Kg7 34.Re1 Rf2 35.Ree3 Rf4 36.Kd3 Bf6 37.Re4 (37...Rf2 38.d5+-; 37.Ne4 Be7+-) 1–0. PoPer – Whodareswins, Live Game Caissa's Web, 2004.

4.a3 Bd6 5.g3 Nge7 6.Bg2 h5 (6...0-0 7.0-0+=) 7.e3 (7.b5 Nd4+=) 7...Ng6 (7...0-0!?+=) 8.h4+- b6 9.Ng5 Bb7 10.f4 0-0-0 (10...Qe7!? 11.f5 Nf8+-) 11.0-0+- Qe7 12.f5 f6 (12...Nf8!? 13.Bd5 Nh7 14.Nf7+-) 13.Ne4+- Nf8 14.Nbc3 g5 (14...Kb8 15.Nb5+-) 15.hg5 fg5 16.f6 Qf7 (16...Qh7 17.Nb5 h4 18.Ned6 (18.Nbd6?! cd6 19.Qg4 Kc7+-) 18...cd6 19.Qg4+-) 17.Nb5 Qe6 (17...Kb8 18.Nbd6 cd6 19.Nd6 Qe6 20.Nb7 Kb7+-) 18.d4 ed4 19.ed4 Bg3 (19...Nb4 20.Ned6 cd6 21.ab4 Bg2 22.Kg2+-) 20.d5 Qg4 21.Qg4 hg4 22.Ng3 1–0. Pierre – Boduen, internet, 2020.

4.b5 Na5 5.Be5 Qb6 6.Nc3 Nc4 7.Nd5 Qc5 8.Nc7 Kd8 9.Bf4 d6 10.Na8 Bf5 (10...Be6 11.b6!+-) 11.d3 (11.c3 Na3 12.Nd4 Nb5 13.Nf5 Qf5+-) 11...Nb2 (11...Qb4 12.Nd2 Nb2 13.Qc1 Qf4 14.Qb2+-) 12.Qd2 Qb5 (12...Qa3 13.e4 Be6 14.Nd4+-) 13.c4 Nc4 14.dc4 Qc4 (14...Qc5 15.Be3 Qa3 16.Ng5+-) 15.Ne5 (better 15.Bd6!? Be7 16.Rd1 f6 17.Qa5 Ke8 18.Be7 Ne7 19.Qd8 Kf7 20.Qh8 Qc3 21.Nd2 Bc2+-) 15...Qc8 (15...Qe6 16.Qa5 Ke7 17.Nc7+-) 16.Rc1 (16.Rc1 Qc1 17.Qc1 de5 18.Qc7 Ke8 19.Qb8 Kd7 20.Qf8 ef4 21.Qg7+-) 1-0. pierre – colin, internet, 2011.

4.b5 Nb8? 5.Be5+/- Qb6 (5...Qd8 6.e4+/-) 6.Nc3+- c6 (6...Nf6 7.e4+/-) 7.e4 d6 8.Bd4 c5 9.Nd5 Qd8 10.Bc3 Be6 11.Bc4 Be7?? (better 11...Nd7+-) 12.Bg7 (12.Bg7 Bd5 13.Bd5+- (13.Bh8?! Bc4 14.a4 Bf6 15.Bf6 Qf6+=)) 1-0. miec – shahoora, internet, 2009.

4.b5 Bc5?? 5.bc6+- bc6 6.Be5 Qg6 7.Nh4 (7.Bc7 d6+-) 7...Qg5 8.Nf3 (better 8.d4 Bb6 9.Nf3+-) 8...Qf5?? (8...Qg6 9.Bc7 d6+-) 9.Bg7+- f6 (9...h6 10.Bh8 f6 11.d4+-) 10.Bh8 Ne7 (10...h6 11.d4 Bb4 12.c3+-) 11.e3 Bb7 12.Nc3 0-0-0 (12...Qe6 13.Bd3 Nd5 14.Nd5 cd5 15.Bg7+-) 13.Bd3 Qe5 14.Ne5 (14.Ne5 Rh8 15.Qh5+-) 1-0. GuestGRDT – GuestVLWH, freechess.org, 2020.

4.b5 Bc5?? 5.bc6 bc6 6.Be5 Qh6 7.e3 (7.Bc7 d6+-) 7...f6 (7...d6 8.Bf4 Qe6 9.d4+-) 8.Bc7 f5 (8...Ne7 9.d4 Bb6 10.Bf4+-) 9.Bf4 (9.d4 Be7+-) 9...Qf6 (9...Qe6 10.d4 Bb4 11.c3+-) 10.d4 Bb4 (10...Be7 11.Ne5+-) 11.c3 Ba5 (11...Be7 12.Ne5+-) 12.Bc4 (12.Ne5 Bd8+-) 12...h5 (12...Ne7 13.Bg5 Qg6 14.Be7 Ke7 15.0-0+-) 13.Ne5 (better 13.Qa4 Bd8 14.0-0+-) 13...Rb8 (13...g5 14.Bg8 Rg8 15.Qh5 Ke7+-) 14.Nf7 Rb2 (14...Rb1 15.Rb1 (15.Nh8?! Bc3 16.Ke2 Ra1=) 15...Bc3 16.Kf1+-) 15.Nh8 Qh4 (15...d5 16.Qh5 g6 17.Ng6 dc4 18.Ne7 Ke7 19.Bg5+-) 16.Bg3 Qe4 17.Qh5 Kd8 18.Nf7 (18.Bg8 Rb1 19.Kd2 Rb2 20.Ke1 Bc3 21.Kf1 Qd3 22.Kg1 Rb1 23.Rb1 Qb1 24.Qd1 Qd1) 18...Ke7 19.Bd6 Kf6 20.Qg5 1-0. DEFFM – GuestRNJV, freechess.org, 2018.

4.b5 Bc5?? 5.bc6+- Qc6 6.Be5 f6 7.Bd4 Ne7+-.

4.b5 Bc5?? 5.bc6+- Qc6 6.Ne5 Qb6 7.Nd3 Bf2 8.Nf2 Qb2+-.

4.b5 Bc5?? 5.bc6+- Qc6 6.Ne5 Qf6? 7.Nf3 (better is 7.e3 Qb6 8.Qh5+-) 7...Qb2= 8.Nc3 Qb6 9.e3 Nf6 10.Bc4 0-0 11.0-0 d6 12.Na4 Qc6 13.Nc3 (better is 13.Nc5 Qc5 14.Be2=) 13...Be3?? (13...Bb4!? 14.Bb5 Qc5–/+) 14.Bf7 (better is 14.Bb5!? Bf2 15.Rf2+/-) 14...Kf7 15.fe3 Bg4 16.h3 Be6 17.Nd4+= Qd7 18.Ne6 Qe6= 19.Qf3 Kg8 20.e4 a6 21.d3 Nd7 22.Qe3 Rf1 23.Rf1 Nc5 24.d4+= Nd7 25.Nd5 Rc8 26.a4 c6= 27.Nb4 d5 28.e5 c5 29.dc5 Nc5 30.a5= Nd7 Attacking the isolated pawn on e5 31.Nd3 Rc2 32.Rb1 Rc3 33.Rb7= Ne5?? 34.Qe5 Rc1 35.Kh2 Qe5 36.Ne5 h6 37.Rb6 d4 38.Ra6 Re1 39.Nf3 Re4 40.Rd6 d3 41.Rd3 Re6 42.Rd7 Kh7 43.Rd4 Kg8 44.g4 Kh7 45.Kg3 1–0. RWO – john1007, ChessWorld.net, 2012.

4.b5 Nce7 5.Be5+/- Qb6 6.e3 d6 (6...d5 7.Be2+/-) 7.Bd4 c5 (7...Qa5 8.Bd3+/-) 8.bc6+- Qc7 (8...Qc6 9.a4 Qc7+-) 9.cb7 Bb7 10.Be2 (10.Bb5 Kd8+-) ½-½. Hasler,Ulrich – Hablak, corr ICCF EU-III-GT-7, 1965.

4.b5 Nh6?? 5.bc6+- dc6 (5...Bd6 6.cb7 Bb7 7.Nc3+-) 6.Be5 Qe6 (6...Qe7 7.d4+-) 7.Bc7 Bc5 8.e3 0-0 9.d4 Bd6 10.Bd6 Qd6 11.Nc3 Ng4 12.Bc4 (better is 12.Bd3!? Nf6+-) 12...Qb4 13.Qd2 (better is 13.Qd3 Bf5 14.Rb1 (14.Qf5?! Qc3 15.Ke2 Qc4 16.Qd3 Qe6+/-) 14...Qb1 15.Nb1 Bd3 16.Bd3+-) 13...Qc4+/- 14.h3 Nf6 15.Ne5 Qe6 16.0-0 Nd5 17.Ne4 Qf5 (17...f6 18.Nc5 Qe7 19.Nf3+/-) 18.Nd6 Qe6 19.Nc8 Rac8 20.c4 Nf6 (20...Nb6 21.c5 f6+/-) 21.g4 (better is 21.Qa5!? Ra8 22.Qc7+-) 21...c5 22.Nf3 (22.Qa5!? cd4 23.ed4+=) 22...cd4 (22...Qc4 23.dc5 Qe4 24.Nd4 Rc5 25.Rfc1=+) 23.Nd4= Qc4 24.Rfc1 Qd5 25.Rc8 Rc8 26.Rb1 (26.Rc1 Rc1 27.Qc1 Qd8=) 26...Ne4 27.Qe1 (27.Qb2 Nd6=) 27...g6 (better is 27...Ng5 28.Qf1 b6=+) 28.Nf3? (better is 28.a4=+) 28...Ng5?? (better is 28...Nc3 29.Kg2 Nb1 30.Qb1 Rc4–+) 29.Ng5+= Qg5 (29...h6 30.Nf7 Qf7 31.Qd1+/-) 30.Rb7+/- Qh4 31.Kg2 Rc2 32.Rb8 (32.Ra7!? h5 33.Ra8 Kg7 34.Ra4+/-) 32...Kg7+= 33.Qb1?? (better is 33.a4+=) 33...Qf2 (34.Kh1 Qg2) 0–1. kamera – NN, GameColony.com, 2002.

4.e3 Bb4 5.Bb5 d6 6.0-0 Bd7 7.a3 Bc5 8.Nc3 a6 9.Nd5 Qd8=+ 10.Bc6 Bc6 11.Nb4 Nf6 12.Nc6+= bc6 13.d3 Bb6 14.a4 0-0 15.a5 Bc5 16.d4 ed4 17.ed4 Ba7 18.c3 Re8 19.Re1 c5 20.Qc2 cd4 21.cd4=+ Re1 22.Re1 h6 23.Qd3 c5 24.h3 Qa5=+ 25.dc5 dc5 26.Bf6 gf6 27.Qf5 Qb6 28.Nh2 Qb4 29.Re4= Qb1 30.Nf1 Qb6 31.Rh4 Qe6 32.Qf3 Rb8 33.Rh6 Rb1 34.Rf6?? Qe1?? 35.Qg4+/- Kf8 36.Qc4 Qe7 37.Qh4 Qe2= 38.Rc6?? Qf1 39.Kh2 Bb8 (40.Rc7 Bc7 41.f4 Bf4 42.Qf4 Qf4 43.g3 Qd2) 0–1. sobedesce – kpayton (1970), net–chess.com, 2004.

5.a3+/- Nd5 6.c4 Nde7 (6...Nb6 7.Be5 (worse 7.Ne5 d6 8.Nf3 Qh6+/-) 7...Qf5 8.Nc3+-) 7.Be5 (worse 7.Ne5 Qe6+/-) 7...Qh6 (7...Qe6 8.Nc3+-) 8.Bc7 b6 9.e4 (9.Nc3 Bb7 10.e3 Ng6+-) 9...Nf6 10.Bd3 (better 10.Nc3 Bb7 11.Bd3+-) 10...Qg6? (10...Bb7 11.Nc3 Ng6+-) 11.0-0 Qh6 (11...Bb7 12.Nc3+-) 12.e5 Ng4 (12...Ned5 13.cd5 Nd5+-) 13.Be4 Nc6 14.bc6 f5 (14...dc6 15.Qa4 Bd7 16.Nc3+-) 15.cd7 Bd7 16.Ba8 Be7 17.Bd5 g5 18.h3 Ne5 19.Ne5 g4 20.hg4 fg4 21.Re1 Be6 22.Qa4 Kf8 23.Nd7 Bd7 24.Qd7 g3 (24...Qh1 25.Kh1 Kg7 26.Re7 Kf6 27.Rg7 Rf8 28.Qg4 Re8 29.Rf7) 25.Qe7 1-0. GuestYPVQ – azterisco, freechess.org, 2019.

5.a3+/- Nd5 6.e4 Nb6 7.Be5 Qd8 8.Be2+/-.

5.a3+/- Nd5 6.e4 Nb6 7.Be5 Qe6 8.Bc7+- Qe4 9.Qe2 (9.Be2 Nd5 10.Bg3 Nf4+-) 9...Qe2 10.Be2 Nd5 (10...d5 11.0-0+/-) 11.Bg3+- Bc5 (11...Ngf6 12.c4 Ne7 13.Nc3+-) 12.c4 Nb6 (12...Ndf6 13.0-0+-) 13.d4 Be7 14.c5 Na4 (14...Nd5 15.Bc4 Ngf6 16.0-0+-) 15.Ne5 (15.0-0 a6+-) 15...d6 (15...Nh6 16.Nd3 a6 17.b6+-) 16.cd6 Bd6 17.Nf7! Bg3?! (17...Kf7 18.Bd6) 18.Nh8 Kf8 (18...Bc7+-) 19.hg3 Nf6 20.Bd1 Nb6 21.Bb3 Nfd5 (21...Bd7 22.Nc3+-) 22.Rh7 Kg8 (22...Bf5 23.Ng6 Bg6 24.Rh8 Ke7 25.Ra8 Na8 26.Bd5+-) 23.Rh5 Be6 24.Ng6 Kf7 (24...Re8 25.Kd2+-) 25.Ne5 Kf6 (25...Ke7 26.Nd2+-) 26.Nd2 Nc3 27.Rc1 Bb3 28.Nb3 Nb5 (28...Rc8 29.g4 Nb5 30.Rf5 Ke6 31.Nc5 Rc5 32.dc5+-) 29.Ng4 Kg6 30.Rb5 Re8 31.Ne5 Kf6 32.Rc7 Nd7 33.Rd7 a6 34.Rb6 Kf5 (34...Re6 35.Re6 Ke6 36.Nc5 Kf6 37.f4 b6 38.Rf7) 35.Rf7 Ke4 36.Rd6 b5 (36...Re5 37.Ke2 b5 38.Nd2) 37.Nc5 1–0. kamret – chessiejames, GameColony.com, 2002.

5.a3+/- Nd5 6.e4 Nb6 7.Be5 Qe6 8.Bc7 Qe4 9.Be2 Nc4?? 10.d3 Qe6 11.dc4 g6 12.0-0 Nf6 13.Re1 Qf5 14.Bd3 Qe6 15.Ng5 Qe1 16.Qe1 Be7 17.Bd6 Kf8 18.Qe7 Kg7 19.Be5 (19...Re8 20.Bf6 Kh6 21.Nf7 Kh5 22.Be2) 1–0. color1972 – monas, ChessWorld.net, 2005.

5.a3+/- Nd5 6.e4 Nb6 7.Be5 Qg6 (7...Qd8 8.Be2+/-) 8.Bc7+- Qe4 9.Be2 1–0. Meisinger,Peter – Zwer,Udo, DESC, 2000.

5.Nc3 +=.

5.c4 Bc5 6.Nc3 Ne7 (6...d6 7.Nd4 Bd4 8.e3 Bc3 9.Bc3 Bf5 10.d4 0-0-0 11.Qa4+=) 7.Nd4 Bd4 8.e3 Bc3 9.Bc3 d6 10.d4 e4 11.Rc1=.

5.c4 Nf3 6.ef3 Bc5 (6...Qf5 7.Qe2 f6 (7...d6 8.d4= f6 9.Nc3 Ne7 10.Rd1 Be6 11.Ne4=) 8.Nc3 Ne7 9.Qe4 Qe6 10.Be2 c6 11.bc6=; 6...Ne7 7.Nc3 d6 8.Qa4 Bd7 9.Qa5 Kd8 10.a3 Kc8 11.Ne4=; 6...Qe6 7.Qe2 f6 8.Nc3 Ne7 9.Rd1 Qb6 10.d4 ed4 11.Ne4=) 7.Qe2 Ne7 (7...d6 8.d4 Bb4 9.Nd2 Bd2 10.Kd2 Qh6 11.Qe3+=) 8.Be5 Qb6 (8...Qg6!?+= 9.Bc7 0-0 10.Qe5 Qf5 11.Qf5+/-) 9.Nc3+/- (9.Bg7 Rg8 10.Be5 Rg6 11.Nc3+/-) 9...Ba3?? (better 9...f6 10.Bf4 (10.Bg3 Bd6+/- 11.Nd5+/- 1.16) 10...Bd6 11.Nd5+/-) 10.Bg7+- Rg8 11.Nd5 Qd6 (11...Rg7 12.Nb6 ab6+-) 12.Bf6 Rg6 13.Be7 Qe6 (13...Qe7 14.Ne7 Re6+-) 14.Ba3 Qe2 15.Be2 Rg2 16.Kf1 Rg6 17.Nc7 Kd8 18.Na8 a6 19.Rg1 (19.Bd3 Re6 20.Rg1 d6 21.Rg8 Re8 22.Re8 Ke8 23.ba6 ba6 24.Bd6 Kd8+-) 19...Rh6 20.Rg8 1-0. chessxliv (2100) - jomunoz (1920), net-chess.com, 2014.

5.Nd4 Bc5?? 6.e3?? ed4= 7.Bc4 a5 (7...Ne7 8.Qh5 d6 9.ed4+=) 8.a4 (8.Qh5 d6+/-) 8...h5 (8...Ne7 9.Qh5 d6 10.ed4+=) 9.0-0 (9.Qe2+/-) 9...b6? (9...Ne7!?+=) 10.Re1 (10.ed4 Be7+-) 10...Bb7+/- 11.Bd4 Qg6 (11...Bd4 12.ed4 Ne7 13.Qe2+/-) 12.Bf1 (12.f3 Bd4 13.ed4 Ne7+/-) 12...Bd6 (12...Be7+/-) 13.g3 (13.Na3 Be7+/-) 13...Nf6 (13...h4 14.g4+=) 14.Bg2 (14.e4 Be7+/- (14...Ne4? 15.d3+-)) 14...0-0-0 (14...Bg2 15.Kg2 Be7 16.Qf3+/-) 15.Bb7 Kb7 16.Qf3 Ka7 (16...Kb8 17.Bf6 gf6 18.h4+/-) 17.Na3 (17.Bf6 gf6 18.h4 Rde8+/-) 17...h4+= 18.Kf1 (better 18.Bf6 gf6 19.Nc4 hg3 20.fg3+=) 18...hg3-/+ 19.hg3 Rh5 (better 19...Ne4!? 20.Re2 Bg3=+) 20.Bf6+= Qh7?? (better 20...gf6 21.Ke2 Rdh8=) 21.Bd8+- Rh1 (21...Qh8 22.Ke2 f5 23.Nc4 Bg3 24.fg3 Rh2 25.Kd3 Qd8 26.Qf5+-) 22.Ke2 Be5 (22...Re1 23.Ke1 Qh8+-) 23.Rh1 Qg8 24.d4 Bf6 25.Bf6 (better 25.Bc7 Qc8 26.Be5 Be5 27.de5 Qe8+-) 25...gf6 26.Qf6 d6 27.Rh8 Qg4 28.Qf3 (28.f3 Qd7 29.Qg7 Kb7 30.Qg8 Qd8 31.Qd8 c6 32.Qe7) 28...Qg7 29.Qa8 1-0. Trkn – Leffe, itsyourturn.com, 2000.

5.Nd4 Bc5?? 6.Nf3 d6 7.e3 e4 (7...Ne7+-) 8.Bf6 Nf6 9.Nd4 Bg4 10.Be2 0-0-0 (10...Bd4 11.ed4 Be6 12.d3+-) 11.Bg4 Kb8 12.Nb3 Bb6 13.0-0 h5 14.Be2 g5 15.a4 g4 16.g3 (16.a5!? Bc5+-) 16...h4 17.Bg4 hg3 18.fg3 Rdg8 19.Rf6 Rg7 20.Nc3 Rgh7 21.h4 a6 22.ba6 ba6 23.Ne4 Rd8 24.Rb1 d5 25.Nec5 c6 26.Rc6 (26.Nd4 Rh6 27.Rb6 Ka7 28.Ra6 Kb8 29.Qb1 Kc7 30.Rac6#) 26...f5 27.Bf5 (27.Rb6 Kc7 28.Nd4 Rg8 29.Nde6 Kc8 30.Rb8#) 27...Rg7 28.Rb6 Ka7 29.Ra6 Kb8 30.Nd4 Kc7 (30...Rb7 31.Rb7) 31.Rb7 1–0. Hal1958 – Dc, playchess.de, 2004.

5.e3 Ne6 6.Be5 Qe7 7.Nc3 d6 8.Nd5 Qd7 9.Bc3 c6 10.bc6 Qc6 11.e4 f5 12.Rb1 (12.ef5?! Qd5 13.fe6 Qe6 14.Be2 Nf6+-) 12...fe4?? (12...Kd8 13.Bb5 Qc5+-) 13.Bb5 ef3 14.Bc6 bc6 15.Qf3 cd5 16.Qd5 Nc7 17.Qc6 Bd7 18.Qc7 Rc8 19.Qa7 Ne7 20.0-0 Nc6 21.Qe3 Be7 22.Bg7 Rg8 23.Bf6 Rg6 24.Be7 Ne7 25.Rfe1 Re6 26.Qd4 Rg6 (26...Kf7 27.Re6 Be6 28.Qf4 Nf5+-) 27.Qh8 Kf7 28.Qh7 Rg7 29.Re7! Ke7 30.Qg7 Kd8 31.Rb7 Rc7 32.Qf8 Be8 33.Qd6 Rd7 (33...Bd7 34.Rc7 Ke8 35.Qd7 Kf8 36.Qd8) 34.Rb8 1-0. usingprogram (1985) - marianek221, kurnik, 2012.

5.Ne5 Qe5 6.e3 Nc2?? 7.Qc2+/- Qd5 (7...Qe6!?+/- A) 8.Nc3 Nf6 (8...d5 9.Ne2 Qg6 10.Qa4 Qd6 11.Nf4 Nf6 12.b6 c6) 9.Bd3 d5 10.0-0 Bd6 11.Ne2 Qe7 12.Nf4 Be6; B) 8.Bd3 Nf6 (8...d5 9.0-0 Nf6 10.Bd4 Bd6 11.Nc3 0-0 12.f4 Be7; 8...c5 9.0-0 d5 10.Nc3 c4 11.Be2 Nf6 12.d3 Bd6) 9.0-0 d5 10.Bd4 Be7 11.Qc7 0-0 12.Qg3 Qg4; C) 8.Qc7 Nf6 9.Be2 d5 10.Be5 Be7 11.Nc3 0-0 12.f4 Qd7) 8.Nc3+- (8.Nc3 Qe6 (8...Qc5 9.d4 Qh5 10.Be2 Qg6 11.Bd3 Qg2 12.Be4 Qg4; 8...Qd6 9.Bc4 Qg6 10.Bd3 Qg5 11.h4 Qc5 12.Bh7 Be7) 9.b6+- (9.Bd3 Nf6 10.0-0 Be7 11.Ne4 c6 12.Rfc1 cb5) 9...c6 10.ba7 Qg6 11.Qa4 Bc5 12.Qe4 Kf8) 1-0. jenny – eltrab, internet, 2011.

5.Ne5 Qe5 6.e3 Nf3! 7.gf3 (7.Qf3 Qb2 Discovered attack; 7.gf3 Qb2 Discovered attack) 7...Qb2 8.Nc3 Qa3 9.f4 Nf6 10.Bg2 Bb4 11.Ne2 (11.Ne4 Be7-+) 11...0-0 (11...d5 12.c3 Be7 13.Qb3-+) 12.c3 Ba5 (12...Be7 13.Qb3-+) 13.Ng3 (13.Qb3 Qe7 14.Rg1-+) 13...Bc3! 14.dc3 Qc3 15.Ke2 (15.Qd2 Qa1 16.Ke2 Qh1 17.Bh1 d5-/+) 15...d6 (15...Qb2 16.Qd2 Qb5 17.Qd3 Qb2 18.Qd2 Qd2 19.Kd2-+) 16.Rc1 (16.Qd2 Qc5 17.Rhb1 Re8-/+) 16...Qa3 (16...Qb2!? 17.Qc2 Qb5 18.Qc4 Bg4 19.Kd3 Qc4 20.Rc4-+) 17.Qd2 Bg4 (17...Ne8 18.Rc3 Qb4 19.Rb3-/+) 18.f3 (18.Ke1!?=+) 18...Bd7-/+ 19.Rc3 (better 19.Rc7!? Bb5 20.Kf2-/+) 19...Bb5-+ 20.Kf2 Qb4 21.Qc2 (21.a3 Qa5-+) 21...Nd5 (better 21...Rfe8-+) 22.Rb1?? (22.Rb3 Qa4 23.Qb2-+) 22...Qc3 23.Qc3 Nc3 24.Rc1 (24.Rb3 Nd1 25.Ke1 Ne3 26.Re3 Rfe8 27.Re8 Re8 28.Kd2 d5-+) 24...Nd5 25.Ne4 (25.Nf5 Bd7 26.Bh3 Be6-+) 25...f5 26.Ng3 (26.Nc3 Nc3 27.Rc3 c5-+) 26...Rae8 27.h4 (27.Bf1 Bf1 28.Nf1 Rf7-+) 27...Re3 28.Bh3 (28.Bf1 Bf1 29.Nf1 Ra3-+) 28...Nf4 (better 28...Ra3 29.Ra1-+) 29.Ke3 Nh3 30.f4 (30.Kd2 c5-+) 30...Bc6 (30...c5 31.Rb1 Bc6 32.h5-+) 31.Ke2 (31.Rc4 g6 32.a4 Re8 33.Kd2 d5-+) 31…Nf4 (31...Nf4 32.Kd2 Ne6-+) 0-1. wlittle (2215) - pede (2185), net-chess.com, 2004.

4.b5 Nd8? 5.Be5+- Qb6 6.e3 f6 (6...Ne6 7.Bc4+-) 7.Bd4 c5 (7...Qa5 8.Nh4+-) 8.bc6! Qc6 (8...Qc6 9.Nc3 Combination; 8...bc6 9.Bb6 Combination; 8...dc6 9.Bb6 Combination; 8...Nc6 9.Bb6 Combination) 9.Nc3 Ne6 10.Bb5 Qc7 11.Qb1 a6 12.Bb6! Qd6 (12...Qb6 13.Bd7 Double attack) 13.Bc4 Ne7 (13...Qb4 14.Qb3+-) 14.a3 g5 (14...Qc6 15.Qb3 Kf7+-) 15.Ne4 Qc6 (15...Qb8 16.Nf6 Kf7+-) 16.Nf6 Kf7 17.Ne5 Kf6 18.Nc6 Nc6 19.Qb2 Ne5 20.f4! gf4 21.ef4 Nf4 22.Bd8 Kf5 23.g4! Ng4 (23...Ng4 24.Bd3 Double attack (24.Qh8 Pinning; 24.Qh8 Deflection); 23...Kg4 24.Qe5 Mate attack) 24.Qh8 Bd6 25.0-0 b5 (25...Bb8 26.Qf8 Ke4 27.d3 Nd3 28.Qf5 Kd4 29.Qd3 Kc5 30.Qd5) 26.Bd3 Ke6 27.Qg8 (27.Qg8 Ke5 28.Qg5 Kd4 29.Rf4 Bf4 30.Bb6) 1–0. Ddgs – Shatri, internet, 2019.

6.d3 Bc5 7.Nd2 d6 8.Ne4 Qg6 9.g3 Bb6 10.Bg2 f5 (10...a6 11.a4 d5 12.Nd2=) 11.Nd2 Nf6 (11...a6!? 12.a4 Bc5+=) 12.Nb3+= 0-0 13.Bd4 f4 (13...Bd4 14.Nd4 a6 15.c3+-) 14.Qd2+- Be6 (14...Nh5!?+-) 15.Bb6 ab6 16.Bb7 (16.Qf4?! Ng4 17.Qd4 Nf2+-) 16...fg3 17.hg3 Rab8 (17...Ra7 18.Bc6+-) 18.Bf3 Nd5? (better 18...Bd5 19.Bd5 Nd5+-) 19.Be4 Qf6 20.Bh7 Kf7 21.c4 Qa1 (21...Ne7+-) 22.Na1 (22.Na1 Nf6 23.Qg5+-) 1–0. Adlai – Hpmefo, internet, 2019.

6.e3 Qb6 7.Bd4 Qa5 8.Be2 d6 9.0-0 Be6 (Unregistered player Black disconnected and forfeits, 1–0). Bonetti,Shane – guest1984, ICC, 2002.

6.e3 c5 7.bc6 dc6 8.Bd4 Qe6 9.Qf3 c5 (better is 9...Ne7!?+/-) 10.Bb5+- Kd8 11.Bc3 Nf6 12.Ba5 Ke7 13.Nc3 Qg4? (better is 13...a6 14.Be2 Ke8+-) 14.Nd5 Nd5 15.Qd5 Kf6 16.Bd8 Kg6 17.Be2 Qe6 (17...Be6 18.Qb7 Qe2 19.Ke2 Rd8 20.Qa7 Bd6+-) 18.Qg5 1–0. Trkn – guest1045, ICC, 2004.

6.e3 c5 7.bc6+/- dc6 8.Bd4 Qg6 9.Nc3 Bg4 (9...Nh6 10.Rb1+/-) 10.Qb1 b5 (10...Bc8 11.Ne2+/-) 11.Bd3 Qg5 (11...Bf5 12.Bf5 Qf5 13.Qb2+/-) 12.a4+- Bd7 (12...Bf5 13.0-0 (13.ab5 Bd3 14.cd3 c5+/-) 13...Bd3 14.cd3+-) 13.Be4 (13.h4 Qe7+-) 13...f5 (13...Rc8 14.Ba7 b4 15.Ne2+-) 14.Bf3 Nf6? (14...b4 15.Nb5! cb5 16.Ba8 ba4 17.Ba7 Nf6+-) 15.ab5 cb5 (15...Rb8 16.Ba7 Rd8 17.bc6 Be6+-) 16.Ba8 Ng4 (16...b4 17.Ra7 f4 18.Ne4 Ne4 19.Be4+-) 17.Nb5 f4 (17...a5 18.Nc7 Kf7 19.Qb3 Kg6 20.Qb6 Kh5 21.Nd5+-) 18.Nc7 Kf7 19.Qb3 Ke7 20.Nd5 Kd8 21.Qb8 Bc8 22.Qc7 Ke8 23.Bc6 (23...Bd7 24.Qd7) 1–0. lucya (2130) – jrralbalos, GameColony.com, 2002.

6.e3 c5 7.bc6 Qc6 8.Bd4 Nf6 9.Nc3 d5?? (better is 9...Bc5 10.Bf6 Qf6+/-) 10.Bb5+- 1–0. Fournier,Frederic – rookmnm, ICC, 2005.

6.e3 de3?? 7.Bf6 ef2 8.Kf2 Bc5 9.d4 Bd6 (9...Nf6 10.dc5 Ne4 11.Kg1 Nc5+-) 10.Bg7 Ne7 11.Bh8 Nf5 12.Qf3 (better is 12.Qh5 Ne7 13.Bc4 c6 14.Qf7 Kd8+-) 12...Nd4 13.Bd4 c6 14.Qf6 Be7 (14...Bf4 15.Qf4 f5 16.Qe5 Kd8 17.Qf6 Ke8 18.Bc4 d5 19.Bc5 dc4 20.Qe7) 15.Qh8+- Bf8 16.Bg7 d5 17.Qf8 Kd7 18.Qf7 (18.Bf6 cb5 19.Qd8 Kc6 20.Be5 d4 21.Qd6) 18...Kd6 19.Bf8 Ke5 20.Qg7 Kf5 (20...Ke6 21.g4 cb5 22.Qe7) 21.Bd3 Ke6 22.Re1 1–0. marekt – Riberac, internet, 2007.

6.e3 de3?? 7.Bf6 ef2 8.Kf2 gf6 9.Bc4 Bc5 10.d4 Be7 11.Qh5 c6 12.Qf7 Kd8 13.Qg7 1–0. Trkn – Thompson, itsyourturn.com, 2000.

6.e3 de3?? 7.Bf6 ef2 8.Kf2 Nf6 9.Nc3 Be7 10.Bc4 0-0 11.Rf1 Bc5 12.d4 Bd6 13.Kg1 b6 14.Qf3 Rb8 15.Nd5 Bb7 16.Nf6 gf6 17.Qf6 Rbe8 18.Bf7 1–0. Trkn – Pettersson,G, itsyourturn.com, 2000.

6.e3 de3?? 7.Bf6 gf6 8.Nc3 (8.de3!? Ne7+-) 8...ef2 9.Kf2 b6 (9...Kd8 10.Qh5+-) 10.Qe2 Ne7 (10...Kd8 11.Qe4 Rb8 12.Re1+-) 11.Nd5 Bb7 12.Ne7 Be7 13.Re1 0-0-0 14.Qe7 Rde8 (14...Kb8+-) 15.Qe8 Re8 16.Re8 1–0. wiking – arkadiusz42, internet, 2010.

6.e3 Qe6 7.Bd4 a6 8.Nc3 (8.ba6 ba6 9.Qf3 c6 10.Nc3 Ne7 11.Bd3 d5 12.Qg3+/-) 8...Bb4?? (better is 8...c5 9.bc6! dc6+/- 10.Na4 b5 11.Nb6 Rb8 12.Nc8+/-; 8...ab5 9.Nb5 Kd8 10.c4 Ne7 11.Bd3 Nc6 12.0-0+/-) 9.Bg7+- Nf6 10.Bh8 Bc3 11.dc3 d6 12.ba6 ba6 13.Rb1 Qf5 14.Bd3 Qh5 15.Bf6 Qd1 16.Kd1 Be6 17.Be4 Rc8 18.Bb7 Rb8 19.Bc6 (19...Kf8 20.Rb8 Bc8 21.Rc8) 1–0. pierre – jo21, internet, 2008.

6.e3 Qe6 7.Bd4 Ne7 8.Bd3+/- (8.Be2 Nf5 9.Bg4 d5 10.0-0 Qg6 11.Bh5 Qd6 12.Qf3+/-) 8...c5 9.bc6 Nc6 10.0-0 Nd4 11.ed4 Qd6 12.Re1+/-.

6.e3 Qe6 7.Bd4 Nf6 8.Qf3 Ne4 9.Bd3 d5 10.c4 f5 11.Qh5 Kd8 12.cd5+-.

6.e3 Qe6 7.Bd4 Nf6 8.Qf3 Be7 9.Nc3 c6 (9...c5 10.bc6! dc6 11.Bd3+-) 10.Bd3+- d5 11.bc6 bc6 12.Rb1 Bd6 13.h3 Rb8 14.Rb8 Bb8 15.0-0 Bd6 16.Rb1 c5? (16...0-0 17.Qe2+-) 17.Bb5 (better 17.Bf6 gf6 18.g4 0-0 19.Nd5 Kg7+-) 17...Bd7 (17...Kf8 18.Bf6 gf6 19.Nd5 Rg8+-) 18.Bf6 gf6 (18...Bb5 19.Bg7 Rg8 20.Rb5 Rg7 21.Nd5+-) 19.Bd7 (19.Bd7 Kd7 20.Nd5+-) 1–0. Vendelo – Genko, internet free game, 2018.

6.e3 Qe6 7.Bd4 Nh6 8.Bd3 (8.Be2 d5 9.0-0 Nf5 10.Bg4 Qg6 11.Bh5 Qe6 12.Re1+/-) 8...Nf5 9.Bf5 Qf5 10.Nc3 c5 11.bc6 dc6 12.0-0+/-.

7.Bc4 b6 8.0-0 Bb7 9.ed4 Bd4 10.c3 Qg6 11.Qe2 (11.g3 Bf6+=) 11...Ne7 12.g3 Bf6 13.Bd3 (13.d4 0-0-0=) 13...Qg5 14.a4 Qd5 15.f3 0-0-0 (15...Qh5 16.a5=) 16.Be4 Qb3 17.Ba3 Qe6 18.Bb7 Kb7 19.Qe6 (19.Qe4 Nd5=) 19...fe6 (19...de6 20.f4=+) 20.Be7= Be7 21.d4 Rc8 22.Nd2 c6 23.c4 (23.Rfc1 Rc7 24.Rc2 c5 25.dc5 Bc5 26.Kg2 Rhc8=) 23...Bb4 (23...Bf6 24.Kg2-/+) 24.Ne4=+ d5 25.cd5 ed5 26.Rab1 de4 (26...Be7!? 27.Nc3 Bf6=+) 27.Rb4= e3 28.Re1 Rhe8 (28...cb5 29.ab5 Rc3 30.Ra4=) 29.bc6 (29.Rb3 cb5 30.ab5 Red8+=) 29...Rc6 (29...Kc6 30.Rb5=) 30.Kf1 (30.d5!? Rc2 31.Re4+=) 30...e2 (better 30...Rc2!? 31.Re2 Rd2=+) 31.Kf2 ½-½. Eti,Lui - Page,D, NZL NZCCA Handicap, 1992.

7.Bc4 Qb6 8.Qh5 Nh6 9.Qe5 Be7 10.Qg7 Rg8 11.Bf7 Kd8 12.Bg8 de3 13.fe3 Nf5 14.Qh8 c6 15.Bh7 Kc7 16.Bf5 Qb5 17.Bd3 Qd5 18.0-0 b6 19.Nc3 Qg5 20.Ne4 Qa5 21.Rf7 Bb7 22.Be5 1–0. wesolyPolak (1840) – hugin (1715), GameColony.com, 2002.

7.Bc4 c6 8.Qh5 (8.bc6 bc6 9.Qe2 Ne7 10.ed4 Bd4 11.Bf7 Kf7 12.Qc4 Nd5 13.Qd4 Re8 14.Kd1=) 8...Qe7 (better is 8...Bb6!?+= 9.e4 d6 10.Na3 Nh6 11.Qe2 0-0 12.bc6 bc6 13.Qd3 Ng4 14.Qg3=+) 9.Bf7+- Qf7 10.Qc5 Qd5? (better is 10...de3 11.fe3 Nf6+/- 12.0-0 Qe7 13.Qc4 d5 14.Qa4+/-) 11.Qd5+- cd5 12.Bd4 Nf6 13.Bf6 gf6 14.Nc3 0-0 15.Nd5 b6 16.Ke2 Bb7 17.c4 a6 18.Nb6 Rad8 19.a4 ab5 20.cb5 Kf7 21.a5 Bg2 22.Rhg1 Be4 23.a6 d5 24.a7 d4 25.d3 Ba8 26.Na8 Ra8 27.b6 de3 28.fe3 Rfe8 29.b7 Ra7 30.Ra7 Rb8 31.Rb1 f5 32.Ra8 Rb7 33.Rb7 Kg6 34.Ra6 Kg5 35.Rh7 f4 36.Kf3 Kf5 37.Rh5 1–0. pierre – margo2006, internet, 2008.

7.Bc4 d6 8.0-0 Qg6 (better is 8...Ne7=) 9.ed4+/- Bh3?? (better is 9...Bb6+/-) 10.Qf3+- Bg4 (10...Bg2 11.Re1 Ne7 12.Qg2 Bb6+-) 11.Qb7 Rc8 12.dc5 Qc2 (12...Ne7 13.Bd3 Qg5 14.cd6 cd6 15.Re1+-) 13.Bg7 Qc4 14.Re1 Be6 (14...Ne7 15.Bh8 Kf8 16.cd6 Ng6+-) 15.Qc8 Ke7 16.c6 Nf6 17.Qc7 Ke8 18.Bf6 Kf8 19.Qd8 1–0. marekt – mysterio, ChessWorld.net, 2003.

7.Bc4 d6 8.Qe2 Bf5 9.Qf3 +=.

7.Bc4 d6 8.Qf3 Bd7?? (better is 8...Qf3 9.gf3 Ne7=) 9.Qb7+- Rd8 (9...Rc8 10.Qe4 Kf8 11.0-0+-) 10.0-0 de3?? (better is 10...Bb6+-) 11.Bf6 ef2 12.Rf2 (12.Kh1 Nf6 13.c3 0-0+-) 12...Bf2 13.Kf2 Nf6 14.Bd3 0-0 15.Qc7 Nd5 16.Qa7 Nf4 17.Nc3 d5 18.b6 Rb8 19.Qd7 Nd3 20.cd3 Rb6 21.Nd5 Rb2 22.Ke3 1–0. pierre – hsro, internet, 2009.

7.Bc4 Qd6 8.0-0 de3? (8...Nf6!?+/-) 9.fe3 (9.de3?! Qg6+/-) 9...Nf6 10.Bf6 Qf6?? (better is 10...gf6 11.d4 Bb4+-) 11.Rf6 gf6 12.Qh5 (12.Qh5 Be7 13.Qf7 Kd8 14.Qg7+-) 1–0. Fournier,Frederic (2035) – frankman50 (1760), Active (5/0), 2004.

7.Bc4 Qd6 8.Qg4+/- Nf6? 9.Qg7+- Rg8?? (9...Rf8 10.0-0 Qe7 11.ed4 Bd6+-) 10.Bf7 Kd8 11.Bg8 Ne8 (11...Qe7 12.Bf7+-) 12.Qh7 de3 (12...Qb6 13.Qh4 Be7 14.Qd4 Qb5 15.Bc4+-) 13.fe3 c6 14.0-0 cb5 15.Bf7 Nf6 (15...Qe7 16.Nc3 Nc7+-) 16.Rf6 Qe7 17.Nc3 Qf6 18.Nd5 Qb2 (18...Be3 19.de3 Qf2 20.Kf2 d6 21.Qg8 Kd7 22.Qe8) 19.Qg8 Bf8 20.Qf8# 1–0. Marram – Ferit Hakan, internet, 2010.

7.Bc4 de3 8.Bf6 ef2 9.Kf1 Nf6 10.d4 Bb4 (10...Bb6 11.Nc3 0-0 12.Kf2 c6 13.Na4+-) 11.Qe2 Be7 (11...Kd8 < 12.Kf2 (12.c3 Be7 13.Bf7+-) 12...d5 13.Bd3+- (13.a3 Re8 14.ab4 Re2 15.Be2 Bf5+-)) 12.Nc3 d5 (12...Kd8 13.Kf2 c6 14.bc6 bc6 15.Rhe1+-; 12...c6 13.d5+-) 13.Nd5 Nd5 14.Bd5 c6 (14...Kd8+-) 15.bc6 Rb8 (15...Be6 16.cb7 Rb8 17.Bc6 Bd7 18.d5+-) 16.Qe5 (16.c7 Ra8 17.Bb7 0-0 18.Ba8 Bd6+-) 16...Ra8 17.cb7 Bb7 18.Bb7 Rd8 19.Qg7 Rf8 20.Bc6 Rd7 21.Rb1 Kd8 22.Rb8 Kc7 23.Qe5 Bd6 24.Rb7 Kc6 (24...Kc8 25.Qf5 Rfd8 26.Rd7 Re8 27.Rf7 Kb8 28.Rb7 Ka8 29.Rb6) 25.Qe4 (25.Qb5) 1–0. pierre – darkman2010, internet, 2008.

7.Bc4 Qg5 8.Qf3+/- (worse is 8.Bd4 Bd4 9.ed4 Qg2 10.Qe2 Kd8–/+) 8...Nf6 9.ed4 Bb6 10.0-0 0-0 11.d3 (11.d5!?+/-) 11...d5= 12.Bb3 Bg4 (12...Re8 13.Bc1 Qf5 14.Qf5 Bf5 15.Be3=) 13.Qg3+= Rfe8?? (better is 13...Nh5 14.Qe5 Qe5 15.de5 Nf4+=) 14.h3+- 1–0. Wall,Bill – WingedChariot, internet, 2002.

7.d3 Qb6 8.c4 Nf6 9.Nd2 de3 10.fe3 Be3 11.Nf3 0-0 12.a4 Bf2 13.Kd2 Re8 14.a5 Qe3 15.Kc2 d6 16.Bd4 Qf4 17.Bf2 Bg4 18.Be2 Re6 19.Bg3 Qe3 20.Re1 Rae8 21.Qd2 Nh5 22.Qe3 Re3 23.Bf2 Re2 24.Re2 Re2 25.Kd1 Rf2 26.Ke1 Rg2 27.Kf1 Bf3 28.Re1 Kf8 29.Re3 Be2 30.Re2 Re2 31.Ke2 Nf4 32.Ke3 Ne6 33.d4 Ke7 34.Ke4 Kf6 35.d5 Ng5 36.Kf4 h5 37.h4 Nh7 38.Ke4 g5 39.hg5 Ng5 40.Kf4 h4 41.Kg4 h3 42.Kg3 Ke5 43.Kg4 Kd4 44.Kg5 h2 45.Kf6 h1Q 46.Kf7 Qh7 47.Ke6 Ke4 48.Kf6 Qh6 49.Ke7 Kd4 50.Kd7 Kc4 51.Kc7 Kd5 52.Kb7 Kc5 53.Ka7 Kb5 54.Kb7 d5 55.Kc7 d4 56.Kd7 d3 57.Ke7 d2 58.Kf7 d1Q 59.Ke7 Qdh5 60.Kd7 Qf7 (1–0 time) 0–1. TriAngel – Balowski, ICC 1999.

7.Bd3 Qb6 8.Qg4 (8.0-0+=) 8...g6 (better is 8...Nf6!? 9.Qf4 de3 10.de3 Be7+=) 9.ed4 Be7 10.d5 Nf6 11.Qf3 Rg8 (11...0-0!? 12.0-0+-) 12.0-0 Qd6? (12...g5 13.Re1 Kf8 14.Re7 Ke7 15.d6 Qd6+-) 13.Re1 Nd5 14.Ba3 Nb4 15.c3 Qb6 (15...c5 16.bc6 dc6 17.Bb4+-) 16.Bb4 d6 17.Na3 Be6 (17...c5 18.bc6 Be6 19.Rab1+-) 18.Re6! fe6 19.Nc4 Rf8 20.Qe2 (20...Qf2 21.Qf2 Rf2 22.Kf2+-) 1–0. Grob,Henry – Decker,R, FSZ der NZZ, 1941.

7.Bd3 d5 8.0-0 =.

7.Bd3 Ne7 8.0-0 d6 9.c3! de3 10.fe3 Qg5 11.Qf3 0-0 12.Be2 idea d4.

7.Qe2 a6 8.Qc4 d6 9.ed4 Be6 (better is 9...Ne7!? 10.ba6 ba6+=) 10.Qc3+- (10.dc5?! Qb2 11.Qc3 Qc3 12.Nc3 dc5 13.ba6 ba6+=) 10...Nh6?? (better is 10...Bb6 11.ba6 Bd5 12.ab7 Bb7+-) 11.dc5 Qf5 (11...Qc3 12.Nc3 Kd7+-) 12.Qg7 Ng4 (12...Rg8 13.Qh6 Qc2+-) 13.Qh8 Kd7 14.Qa8 Qf2 15.Kd1 Ne3 16.de3 Bg4 17.Be2! Be2 (17...Qe2 18.Kc1 Combination; 17...Be2 18.Kc1 Combination) 18.Kc1 Qe3 19.Nd2 Qc5 20.ba6 Bd3 21.c3 Ba6 22.Re1 Qf2 23.Qe8 1–0. Fournier,Frederic – frarse, Active (5/0), 2004.

7.Qe2 c6 8.ed4 Ne7 9.Qe5 (9.dc5?? Qb2 10.Nc3 Qa1 11.Qd1 Qb2–+) 9...Qe5 10.de5 cb5 11.Bb5 a6 12.Be2 b5 13.0-0 d6 14.ed6 Nf5 15.Bf3 Ra7 16.Re1 (16...Kd8 17.a4+/-) 1–0. hal1958 – skywind, playchess.de, 2003.

7.Qe2 d6 +=.

7.e4 Qf4 8.Qe2 d6 9.f3 Bd7 (9...Nf6 10.Qd3=+) 10.g3 (10.c3 Qh4 11.g3 Qf6=) 10...Qg5 (10...Qf6=+) 11.d3 (11.c3!?=) 11...Bb5–/+ 12.c4 (12.c3 Qf6–/+) 12...dc3 (12...Bd7 13.Bg2–/+) 13.Nc3 Bb4 14.f4 (14.e5) 14...Qf6 15.0-0-0?? (better is 15.Rc1=+) 15...Bc3–+ 16.Ba3?? (better is 16.e5 de5 17.Bc3–+) 16...Ba1 17.e5 de5 18.Bg2 0-0-0 19.Rhf1 Qa6 20.Kb1 Rd3 21.Bb2 Bb2 22.Qb2 Qa4 23.Bb7 Kb7 24.Rd3 Ka6 25.Ra3+- Nf6? 26.Ra4 Ba4 27.Qa3 Ka5 28.Rc1 Rb8 29.Ka1 ef4 30.Rc5 Rb5 31.Rc7 a6 32.gf4 Nd5 33.Rf7 Nb4 34.Qc3 Kb6 35.Qd4 Ka5+- 36.Qd8 Rb6 37.Rf5 Bb5 38.Kb2 Nd3 39.Qd3 Rb7 40.a4! Ka4 41.Qa3 1–0. Tricky.1 – monas, ChessWorld.net, 2005.

7.Qf3 Qb6 8.ed4+/- Be7 9.d5 Bf6 10.Nc3 Ne7 (10...d6 11.Bd3+/-) 11.Bd3 c6 (11...Be5!?+/-) 12.Ne4 Bb2? (12...Nd5 13.Bf6 Nf6 14.Nf6 gf6 15.Qf6 Rf8+-) 13.Nd6 Kd8 14.Nf7 Ke8 15.Nh8 Ba1 (15...Nd5 16.Rb1 Bf6+-) 16.Qf7 Kd8 17.d6 1–0. Woelfelschneider,Peter – Schulte, 2009.

7.Qf3 Qe7 8.Be2 Qe5 9.a4 a6 10.ba6 ba6?? (better is 10...Rb8 11.ed4 Bd4 12.ab7 Bb7 13.Bd4 Qd4+/-) 11.Qa8+- Ne7 12.ed4 (12.Ba6!? 0-0+-) 12...Bd4 13.c3 Bb6 14.a5! Ba5 15.d4! Qg5 (15...Qd4 16.Ra5 Deflection) 16.0-0 (better is 16.Ba6 0-0 17.Bc8 Bc3 18.Nc3 Nc8+-) 16...Bb6 17.Ba6 0-0 18.Re1 h5 (18...Ba6 19.Ra6 Ng6 20.Ba3+-) 19.Bc1 Qf6 (19...Qd5 20.Bc8 (20.Re7?? Qa8 21.Nd2 Ba6–+) 20...Qa8 21.Ra8 Nc8 22.Rb8+-) 20.Qe4 (20.Qe4 Qe6 21.Bd3+-) 1–0. Energie – Reingp, playchess.de, 2006.

7.Qf3 Qf3!? 8.gf3 Nf6 =.

8.0-0 0-0 9.a4 d5 10.Be2 Qg5 11.Bf3 de3 12.de3 Bh3 13.Nc3 Rad8 14.a5 c6 15.Ra4 d4 16.Ne4 Qf5 17.gh3 de3 18.Qa1 Qf3 19.Bg7 ef2 20.Rf2 Rd1 21.Qd1 Qd1 22.Kg2 Bf2 23.Nf2 Qd5 24.Kf1 Qb5 0–1. Trkn – Gabriel, itsyourturn.com, 2000.

8.0-0 d5 9.Bb3 0-0 10.Re1 (10.ed4 Bd4 11.Bd4 Qd4 12.Qe2=) 10...Qg6 (better 10...a6!?=+) 11.ed4+= Bd6 12.Nc3 c6 13.bc6 (13.Qe2 Bh3 14.g3 Nf5=) 13...bc6 14.g3 (better 14.Rb1+=) 14...Nf5–/+ 15.Na4 (15.Nd5 cd5 16.Bd5 Rb8–/+) 15...Nh4–+ 16.Re3 Nf5 (16...Bg4 17.Qf1 Bf4 18.Rd3 (18.gh4?? Bf3 19.Qg2 Qg2) 18...Nf3 19.Rf3 Bf3 20.Nc5 Bd2 21.Nd7–/+) 17.Rf3 (17.Re1 Nh4 18.Re3 Bg4–/+) 17...Nh4 18.Rc3 (better 18.Re3=) 18...Bg4–/+ 19.f3 Be6 (19...Nf3 20.Rf3 Qh5–+) 20.Qe2+= (20.Rc6? Bg3 21.Qf1 Bf4 22.Kh1 Qh5 23.Re6 fe6–+) 20...Nf5 21.Rc6 Rad8 (21...Bd7 22.Ra6 Rfe8=) 22.Nc5+- Bg3?? (better 22...Rfe8 23.Qf2 Bc8 24.Bd5 Ne7 25.Rd6 Rd6+-) 23.hg3 (23.Re6?! Bh2 24.Kh1 fe6 25.Qe6 Qe6 26.Ne6 Bg3+-; 23.Ne6?! Bd6 24.Qg2 Qe6+=) 23...Ng3 (23...Rd6 24.Rd6 (24.Ne6 fe6 25.Rc3 Ng3+-) 24...Qg3 25.Qg2 Qd6 26.Qh2+-) 24.Qg2 Ne2 (24...h5 25.Re1 Rfe8 26.c4 dc4 27.Bc4 Bc4 28.Re8 (28.Rg6 Re1 29.Kh2 Nf1 30.Kh3 fg6–+) 28...Re8 29.Rg6 Re1 30.Kh2 Nf1 31.Kh3 fg6 32.d5+-) 25.Kf2 Qg2 26.Kg2 Nf4 (26...Bf5 27.Re1 Rfe8 28.Kf2+-) 27.Kg3 g5 28.Rc7 h5 (28...Bf5 29.Re1 (worse 29.Ra7 Rfe8 30.Ne4 Be4 31.fe4 Re4+-) 29...Kg7 30.Ra7+-) 29.Re1 h4 30.Kh2 1–0. Pierre – Tisauhy, internet, 2020.

8.Qh5 Bb6 9.ed4 d6 10.0-0 0-0 11.c3 Ng6 12.Bd3 h6 13.Be4 Nf4 +=.

8.Qh5 Bb6 9.Bd4 Bd4 10.ed4 d6 11.c3 0-0 12.0-0 Be6 13.Bd3 g6 +=.

8.Qh5 Bb6 9.Bd4 Bd4 10.ed4 d6 11.c3 0-0 12.0-0 Ng6 +=.

8.Qh5 d6 9.ed4 0-0 10.c3 Bb6 11.0-0 Ng6 12.Bd3 a6 13.ba6 ba6 14.Be4 +=.

8.Qh5 d6 9.ed4 0-0 10.c3 Bb6 11.0-0 Ng6 12.Bd3 h6 13.Be4 Nf4 =.

8.Qh5 d6 9.ed4 0-0 10.c3 d5 11.Bd3 Qe6 12.Kd1 g6 13.Qf3 Bd6 +=.

8.0-0 0-0 9.d3 c6 =.

8.0-0 0-0 9.ed4 Bd4 10.c3 Bb6 11.d4 d6 12.Nd2 Ng4 13.h3+= Nh6 14.Re1 Bf5 15.a4 a6 16.Qf3 c6? 17.bc6+- bc6 18.a5 Ba7 19.Qc6 Be6 20.Ba6 Qf5 21.Bb7 Bd5 22.Qd5 Qd5 23.Bd5 Rab8 24.Nc4 Nf5 25.g4 Nh4 26.Re7 Nf3 27.Bf3 Rbe8 28.Ra7 1–0. mtr – reventon, internet, 2010.

8.0-0 0-0 9.ed4 Bd4 10.c3 Be5 11.Qb3 Re8 12.f4 Bf4 13.g3 Qb6 14.Kh1 =+.

8.ed4 0-0 9.c3 Re8 10.Be2 Be7 11.0-0 d5 12.Bf3 Be6 13.Qb3 c6 14.Ba3 =.

8.ed4 Bd4 9.Bd4 Qd4 10.Qe2 Kd8 11.c3 Qf6 12.0-0= d6 13.Re1+= Bg4 14.Qe4 Re8?? (better is 14...Kc8+=). pierre – Ra.O, ChessWorld.net, 2005.

8.ed4 Bd4 9.Bd4 Qd4 10.Qe2 Kd8 11.c3 Qf4 12.g3 Qf5 13.Bd3 Qh3 14.Kd1 =+.

8.ed4 Bd4 9.Bd4 Qd4 10.Qe2 Kf8 11.c3+= Qc5 12.d4 Qg5= 13.0-0 d6 14.Re1+/- Bd7 15.Nd2 Bh3? 16.f4!+- Qd8 17.gh3 Qd7 18.a4 Re8 19.Qf3 Re1 20.Re1 g6 21.Qb7 Kg7 22.Qa7 Qh3 23.Re2 Qg4 24.Rg2 Qd1 25.Nf1 Re8 26.Qc7 Re1 27.b6 Qh5 28.b7 Ng4 29.Qf7 Kh6 30.Qf8# 1–0. pierre – Bibbo, ChessHere.com, 2005.

8.Bd4 Bd4 9.ed4 0-0 10.Qe2 Qd4 11.Nc3 Ng4 12.0-0 d6 13.Nd5 Ne5 14.Bb3 =.

8.Qe2 0-0 9.ed4 Bd4 10.Bd4 Qd4 11.Nc3 Ng4 12.0-0 d6 13.Nd5 Ne5 14.Bb3 =.

8.Qh5 d6 9.Qd5 Nf5 10.Qf3 Qh4 11.e4 Nh6 12.c3 dc3 13.Bc3 0-0 14.d4 +=.

6.gf3 Ne7 7.f4= d6 8.fe5 de5 9.d4 (9.Bg2 a6 10.Nc3 ab5 11.Nb5 Qb6=+) 9...ed4 (9...e4 10.c4=+) 10.Bd4= Qh4 11.Nc3 Bg4 12.Qd3 Bf3 (12...0-0-0 13.Bg2 Bf5 14.Qc4+=) 13.Rg1 Qh2 (13...0-0-0 14.Rg3 Bd5 15.Nd5 Nd5 16.0-0-0+= (16.Bg7 Bg7 17.Rg7 Ne3 18.Qe3 Rhe8-+)) 14.Rg3 (14.Bg7? Rd8 (14...Qg1?! 15.Bh8 Ng6 16.Ne4 Bb4 17.c3=) 15.Qc4 A) 15...Qg1?! 16.Bh8 Bg7 17.Bg7 Qg7 A1) 18.Qc7?? Nd5 19.Qc5 Nc3-+ (19...Qc3?! 20.Qc3 Nc3 21.Bd3-+); A2) 18.Rb1=+; B) 15...Nf5-+) 14...Bh5?? (better 14...Qh5=) 15.Rh3+- (15.Bg7 Bg7 16.Rg7 Bg6 17.Rg6 Ng6-/+) 15...Qd6 16.Rh5 0-0-0 (16...f5 17.Qc4+-) 17.Rh7 (17.Rd1 f5+-) 17...Rh7 18.Qh7 Qa3 (18...f5 19.Bd3+-) 19.Rd1 Qb4 20.Bh3 (20.Bg7?! Rd1 21.Kd1 Qg4 22.Kd2 Qg7 23.Bh3 f5 24.Bf5 Nf5 25.Qf5 Qd7 26.Qd7 Kd7+-) 20...Kb8 21.Bg7 Bg7 (21...Rd1 22.Kd1 Bg7 23.Qg7 Qd6 24.Ke1 c6 25.Qf7 Qe5 26.Qe8 Kc7 27.Qd7 Kb6+-) 22.Rd8 (22.Rd8 Nc8 23.Rc8) 1-0. DEFFM – DoktorM, freechess.org, 2018.

6.Qf3 Be7 7.Qf6 Bf6 8.Nc3 c6 9.Bc4 e4 10.Rb1 d5 11.Be2 Ne7 12.0-0 0-0 13.f3 Bf5 14.fe4 Be4 15.d3 Bg6 16.Bf3 Nf5 17.e4 Ne3 18.Rf2 d4 19.Ne2 Nc2 20.bc6 bc6 21.Rc1 Nb4 22.a3 Nd3 23.Bd4 Nc1 24.Bf6 Ne2 25.Re2 gf6 26.e5 Rae8 27.Bc6 Re5 28.Re5 fe5 29.Kf2 f5 0–1. TriAngel – mastermaterl, ICC 1999.

7.gf3 d6 8.c4 Be6 9.d3 g6 (9...Ne7!?+=) 10.f4= Bg7 11.Nd2 Nh6 12.fe5 de5 13.f4 Ng4 14.Ke2 0-0 15.h3 Nh6? (better is 15...Ne3!? 16.fe5 Nf5=) 16.Be5+- Be5 17.fe5 Rad8 18.d4 Nf5 19.Rg1 Bd7 20.a4 c6 (20...f6 21.Nf3+-) 21.Ne4 cb5? (21...Kg7+-) 22.ab5 Be6 23.d5 Bc8 24.Ra7 Rfe8 (24...Kg7 25.Nf6 Nd6 26.Kf3+- (worse is 26.ed6 Kf6 27.c5 b6+-)) 25.Nf6 Kg7 26.Ne8 Re8 27.Ra8 Bd7 28.Re8 Be8 29.Kd3 Nh4 30.Be2 Nf5 (30...Bd7 31.Ra1+-) 31.e4 Nh4 32.Rg4 1–0. Fournier,Frederic – arodriaz, Active, 2005.

7.gf3 d6 8.Bc4 Nf6 9.d4 e4 (9...Nd7!?=) 10.fe4+/- Ne4 11.Nd2 Bf5 12.f3 Nd2 13.Kd2 Be7 14.e4 Bd7 15.Rhg1 0-0 16.d5 h6?? (better is 16...g5+/-) 17.Rg7+- Kh8 18.Rf7 Kg8 19.Re7 Rf3 20.Rd7 Rf2 21.Be2 Re8 (21...Rg2 22.Rc7 b6 23.Rd7+-) 22.Rg7 Kf8 23.Kd3 Rh2 24.Rh7 Kg8 25.Rc7 Rh3 26.Kd4 Rh2 27.Bd3 Rb8 28.Rg1 Kh8 29.Kc4 1–0. var – orka, Live Game Caissa's Web, 2004.

7.gf3 Bd6 8.Rg1 g6 9.Be2 b6 (9...f6!?=) 10.f4+= f6 11.fe5 Be5 12.Nc3 (12.Be5 fe5 13.Bf3 Rb8+=) 12...Bb7 (12...Bh2 13.Rh1 Be5 14.Bf3=) 13.f4+= Bd6 14.Kf2 0-0-0 15.Bf3 Bf3 16.Kf3 Ne7 (better is 16...c6!?+/-) 17.Ne4+- Nf5? (better is 17...Bb4+-) 18.Bf6 (18.Nf6?! Be7+-; 18.Nd6?! Nd6 19.Bf6 Nb5 20.Bh8 Rh8+-) 18...Rdf8 19.Bh8 Rh8 20.a4 Be7 21.a5 d5 22.Nc3 Bf6 23.ab6 cb6 24.Ra7 Rd8 (24...Bc3 25.dc3 Re8 26.Ra8 Kd7 27.Re8 Ke8+-) 25.Ra8 Kd7 26.Rd8 Kd8 (26...Bd8 27.Nd5 Nd6 28.Rb1+-) 27.Nd5 Bg7 28.c4 Nd6 29.Nb6 Kc7 30.Nd5 Kb7 31.Rb1 Nc4 32.Rc1 Nd2 (32...Nb6 33.Rc7 Kb8 34.Rg7 Nd5 35.Rh7+-) 33.Ke2 Ne4 34.Rc7 Kb8 35.Rg7 Nc3 36.Nc3 (36.Nc3 g5 37.Ne4 gf4 38.Nd6 f3 39.Kf3 h5 40.b6 h4 41.Rg8#) 1–0. usingprogram (1980) – kosovari313, kurnik, 2012.

7.gf3 f6 8.c4 a6 9.a4 ab5 10.cb5 b6 11.Nc3 Bb4 (11...Bb7 12.e4+=) 12.Bc4 (12.Rg1 Bf8+=) 12...Bc3 13.Bc3 Ne7 14.0-0 (better is 14.Rg1!? d5 15.Bb3+=) 14...Bb7+= 15.e4 d5 16.ed5 Bd5 17.Bd5 Nd5 18.Rfe1 0-0 19.Kg2 Nf4 20.Kg1 Nh3 (better is 20...Rfd8!?–/+) 21.Kg2= Ng5 22.a5 h5 (better is 22...ba5!? 23.f4 ef4 24.Ba5 Ra7=) 23.a6 h4 (23...Ne6 24.Kg3=) 24.h3 (24.d4 ed4 25.Bd4 Nf7+/-) 24...Kh7? (24...Rfd8 25.f4 ef4 26.Ra4 f3 27.Kh2=) 25.Rad1 (25.Ra4!? Ne6 26.d4 Nd4 27.Bd4 ed4 28.Rd4+-) 25...Rfd8 (25...Rfc8!?+=) 26.d4+/- ed4 27.Bd4 c5 28.bc6+/- Ra6 29.Be3 b5?? 30.Rd8+- Rc6 31.Rb1 Ne6 32.Rb8 Nc7 33.Bf4 Nd5 34.Be3 Ne3?? 35.fe3+- Rc2 36.Kg1 Rc3 37.Re1 Rc5 38.Kf2 Rc2 39.Re2 Rc5 40.Rb2 g5 41.R8b5 Rc4 42.Rb7 Kg6 43.R7b4 Rc3 44.R4b3 Rc5 45.e4 f5 46.ef5 Rf5 47.Rb6 Kh5 48.R2b5 Rf4?? 49.Rc6 Ra4?? 50.Rcc5 Ra2+- 51.Ke3 Ra3 52.Kd4 Ra4 53.Kc3 Rf4 54.Rg5 Kh6 55.Rh5 Kg6 56.Rbg5 Kf6 57.Rg4 Rf3 58.Kd4 Rh3 59.Rhh4 Rf3 60.Rf4 Rf4 61.Rf4 Kg5 62.Ke4 Kg6 63.Rf1 Kg5 64.Ke5 Kg4 65.Ke4 Kg3?? 66.Rf8 Kg2 67.Ke3 Kg3 68.Rg8 Kh4 69.Kf3 Kh5 70.Kf4 Kh6 71.Kf5 Kh7 72.Rg3 Kh6 73.Rg1 Kh7 74.Kf6 Kh8 75.Kf7 Kh7 76.Rh1 1–0. Fournier,Frederic – kobajashi, Active (5/0), 2005.

7.gf3 f6 8.Bc4 Ne7 9.Nc3 c6 10.e4 cb5 (better is 10...Ng6!?=) 11.Nb5+= (worse is 11.Bb5 a6 12.Be2 b5+=) 11...Kd8 12.Nd6 Rg8? (better is 12...Kc7 13.Nf7 Rg8+/-) 13.Ba3 Kc7 (13...g6 14.Nc8 Nc8 15.Bg8 Ba3 16.Bh7+-) 14.Bg8 Ng6 (14...Ng8 15.Ne8 Kd8 16.Bf8 Ke8 17.Bg7 Kf7+-) 15.Ne8 Kd8 16.Bf8 Ke8 (16...Nf8 17.Ng7 d6 18.Rg1+-) 17.Bg7 h5 (17...Ke7 18.Bh7 Nf4 19.h4+-) 18.Bf6 Nf4 (18...d6 19.Rg1 Nf4 20.Rg7+-) 19.Be5 Ng2 (19...Ng6 20.Bd6 Nh4 21.Ke2+-) 20.Ke2 Nh4 (20...h4 21.Rhg1 h3 22.Bd5+-) 21.Rhg1 b5 22.Bd6 Ba6 23.Bd5 b4 24.Ke3 Rd8 (24...Nf5 25.ef5 b3 26.Rg8) 25.Rg8 1–0. usingprogram (1995) – marianek221, kurnik, 2012.

4.a3 Be7 5.e3 Qg6 6.Be2 (6.Bd3 f5 7.Bf1 Be6=+) 6...Bf6 (6...e4 7.Nd4 Qg2 8.Rf1-+) 7.0-0? (better 7.Rg1=+) 7...e4-+ 8.Nd4 (8.d4 ef3 9.Bf3 c6-+) 8...Bh3 9.g3 Bf1 10.Qf1 h5 11.Qg2 (11.Nc3 Bd4 12.ed4 Ne7-+) 11...h4 12.c4 (12.f4 hg3 13.Qg3 Qh7-+) 12...hg3 13.Qg3 Qh7 14.c5 (14.Qg2 Be5-+) 14...Bh4 (better 14...Be5 15.Qg2 dc5 (15...Qh2?! 16.Qh2 Bh2 17.Kg2-+) 16.bc5 Nd7-+ (16...Qh2?! 17.Qh2 Bh2 18.Kg2-+)) 15.Qg2 dc5 (15...Nf6 16.Nb5 Kd7 17.cd6 cd6 18.d3-/+) 16.bc5 (16.Nb5 Kd8 17.Bg7 cb4 18.ab4 a6 19.Bh8 Qh8+=) 16...Nd7 (16...c6!?-+) 17.Nb5-/+ 0-0-0 18.c6 (18.Bg7 Nh6 19.Bh8 Qh8 20.c6-+) 18...Nc5?? (18...bc6 19.Na7 Kb7 20.Bg7-+) 19.cb7?? (19.Bg7 Nh6 20.Bh8-/+) 19...Kb7-+ 20.Bd4 (better 20.d4 Nb3 21.N5c3 Na1 22.Ne4-+) 20...Nb3 21.Ra2 Nd4 (better 21...Nc1 22.Bc4 Na2 23.Ba2 Ne7-+) 22.Nd4-/+ g5 (22...c5 23.Rb2 Kc7 24.Nb5 Kd7=+) 23.Bd3 (23.Rb2 Ka8 24.Nc6 Nf6+=) 23...f5 (23...Nf6 24.Nc3 Rd4 25.ed4+/-) 24.Rb2 Kc8 25.Ba6 (25.Bc4 Rd6 26.Be6 Re6 27.Ne6 Qg6=+) 25...Kd7-/+ 26.Bb5 Ke7 (better 26...Kd6!? 27.d3 c5=+) 27.Nc6= (27.Nc6 Ke8 28.Nd8 Kd8 29.f3+=) 1-0. BeepBeepImAJeep (2660) – chunkymonkey, lichess.org, 2015.

4.b5 c6 5.a4 Bg4 6.e3 Bf3 7.gf3 Ne7 8.f4 Ng6 9.Bh3 Be7?? (better 9...Nd7=) 10.Bc8+- Nf4? (10...a6 11.Bb7 Ra7 12.Qg4+-) 11.ef4 (11.Bb7 Qf5 12.Ba8 Ng2 13.Ke2 Nh4+-) 11...Qf4 (11...Qg6 12.Qe2 Qc2 13.d4 Qe2 14.Ke2+-) 12.0-0 (12.Nc3 a6 13.Bb7 Ra7 14.bc6 Qc4+-) 12...Qg5 13.Kh1 Nd7 (13...a6 14.Bb7 Ra7 15.bc6+-) 14.Bb7 Rb8 15.Bc6 a6 (15...Bf6 16.d4 Rd8 17.de5 de5 18.f4+-) 16.f4 ef4 17.Rg1 Qf5 18.Bg7 Rg8 19.ba6 Rg7 (19...Qc5 20.Qf3 Rc8+-) 20.Rg7 Kf8 (20...Qc5 21.Rg8 Bf8 22.Qf3+-) 21.Qg1 Nf6 (21...Bh4 22.Rg8 Ke7 23.a7+-) 22.a7 Rc8 23.a8Q Ra8 24.Ba8 h5 25.Qg5 Qa5 1–0. GuestWHFK – guestATB, freechess.org, 2018.

4.b5 c6 5.a4 h6 6.e3 Ne7 7.Be2 Ng6 8.c4 Qe6 9.Nc3 Be7 10.0-0 f5 11.d4 Qf6 12.de5 (12.a5 e4 13.Nd2 0-0+=) 12...de5+= 13.Qc2 0-0 14.Rad1 Nd7 15.Qb3 (15.a5!?+=) 15...Nc5= 16.Qc2 Ne6 Black plans f4 (16...Be6 17.Rd2=) 17.Na2 Ng5 18.Nc3 (18.Ne5 Ne5 19.f4 Ngf7+=) 18...Nf3 19.Bf3 Qg5? (19...a6 20.Rd2=) 20.g3 (20.bc6 e4 21.Ne4 fe4 22.Be4 Bf5 23.cb7 Rab8+-) 20...f4 (20...e4!? 21.Be2 Be6=) 21.ef4 (21.bc6 bc6 22.Bc6 Rb8 23.Bd5 Kh8+/-) 21...ef4 (21...Nf4 22.Ne4 Nh3 23.Kh1+=) 22.Bc1 (22.bc6 bc6 23.Bc6 Rb8+/-) 22...h5? (22...Bg4 23.Ne4 Qh5 24.Bg4 Qg4 25.c5=) 23.Ne4 (23.bc6 Bf5 24.Bd5 Kh8 25.Ne4 bc6 A) 26.Ng5 Bc2 27.Bc6 Rac8-/+ (27...Bg5?! 28.Ba8 Ra8 29.Rd5=); B) 26.Bc6+/-) 23...Qf5+= 24.Bg2 (24.Bb2 Ne5 25.Be5 Qe5+=) 24...a5 (24...Be6 25.bc6 f3 26.Bh1= (26.cb7? fg2 27.Rfe1 Rab8-+)) 25.Bb2 (better 25.Rfe1!?+=) 25...f3=+ 26.Bh1 Bd8?? (better 26...Nf4 27.Rfe1 Qg4=+) 27.Rfe1 Ne5 (27...Nf4!? 28.Qc3 Bf6 29.Nf6 Rf6 30.Bf3 Nh3 31.Kg2 Be6+-) 28.Qc3+- Bf6 29.Nf6 (29.Nd6 Nd3 30.Qd3 Qd3 31.Rd3 Bb2 32.Bf3 cb5 33.cb5 Rd8+-) 29...gf6 30.Qe3 (30.Ba3 Re8+-) 30...Be6 (30...Nc4!? 31.Qe7 Qh7 32.Bf6 Qe7 33.Be7 Rf5+/-) 31.Be5+/- fe5 32.Qe5 (32.bc6!? bc6 33.Rd6 Rad8 34.Rd8 Rd8 35.Bf3 Bc4 36.Bc6 Rc8+-) 32...Qe5 33.Re5 Bf7?? (better 33...Bc4 34.Rg5 Kh7 35.Rh5 Kg6+-) 34.Rg5+- Kh7 35.Bf3 Kh6 (35...Rad8 36.Rd8 Rd8 37.bc6 bc6 38.Ra5+-) 36.Re5 (better 36.h4 Rfd8 37.Rd8 Rd8 38.bc6 bc6 39.Ra5+-) 36...Kg6 (36...Bg6 37.Bg2 (37.bc6?! Rf3 38.cb7 Rb8+-) 37...Rad8 38.Rd8 Rd8 39.Bf3+- (39.bc6?! Rd1 40.Bf1 Bd3+-)) 37.Rde1 (better 37.Rd6 Kg7 38.Rg5 Bg6 39.Rdg6 Kf7 40.bc6+-) 37...Kh6 (37...Bc4 38.Be4 Kf6 39.Rf5 Kg7 40.Rg5 Kf6 41.Rg6 Kf7 42.bc6+-) 38.Bg2 (38.bc6!? bc6 39.Bc6 Rac8+-) 38...Bc4 39.Be4 (39.bc6!? bc6 40.Rc1 Bd5 41.Bd5 cd5 42.Rd5 h4+-) 39...Rf6? (better 39...Rae8 40.Bh1 Re5 41.Re5 Rd8+-) 40.Bg2 Re8?? (40...Rff8 41.bc6 bc6+-) 41.Re7 (better 41.Re8 cb5 42.ab5+-) 41...Re7+= 42.Re7 (42.Re7 cb5 43.ab5+/-) 1-0. ClayPigeons (2175) - Jony2712u (2145), Rated Bullet game, lichess.org, 2021.

4.b5 Bd7 5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nc3 Nh6 10.e3 Be7 11.Be2 (11.d4 0-0+=) 11...0-0 (11...Qg6 12.0-0=) 12.0-0 (12.d4 Bf5+=) 12...Nf5 (12...Qg6 13.d4=) 13.Ne4 (13.d4 ed4 14.Nd4 Nd4 15.Qd4 Qd4 16.ed4 Re8+=) 13...Qg6 14.Qb1 d5? (better 14...cb5 15.cb5 Nh4 16.Nh4 Bh4=) 15.Ne5+/- Qe6 16.cd5 cd5 17.Ng3 Bf6?? (17...Ng3 18.fg3 Bc8 19.Bd3+-) 18.f4 (better 18.Nd7 Nd7 19.Qf5+- (19.Nf5?! Ba1 20.Bg4 Be5+-)) 18...Ng3+/- 19.hg3 Bc8 20.Bb2 Nd7 (20...Re8 21.Bh5 Rf8 22.Qc2+/-) 21.Bg4 Qd6 22.Nd7 Bd7 23.Bd7 Bb2 24.Qb2 (better 24.Bf5!? Bf6 25.Bh7 Kh8 26.Bf5+-) 24...Qd7+= 25.Qd4 (25.Rc1!?+=) 25...Qb5= 26.g4 (26.Rc1 Rd8=) 26...Qc6 27.g5 h6 (27...b5!?=) 28.gh6+= Qh6 (28...gh6 29.Rf3 Rd8 30.Rh3+=) 29.Kf2 (better 29.Qd5!? b6 30.Ra1+/-) 29...Rd8 30.Rg1 Qg6 31.Kf1 (31.Rc1 b6=) 31...b5 32.g3 (32.Kf2 Qc2=) 32...b4 (32...Qe4 33.Qe4 de4 34.Ke2=+) 33.Kg2 (better 33.Qb4!? d4 34.ed4 Qd3 35.Kf2 Rd4 36.Qc3 Qd2 37.Qd2 Rd2 38.Ke3+=) 33...b3 (33...Qe4 34.Qe4 de4-/+) 34.Rh1 (34.f5!? Qf5 35.Qb6 Qe4 36.Kf2-/+) 34...b2?? (better 34...Qe4 35.Kg1 Qf3-+) 35.Qb2= 1-0. ClayPigeons (2175) - mohammadtaghi (2175), Rated Bullet game, lichess.org, 2019.

4.b5 Bd7 5.c4 a6 6.d4 ed4 (6...e4!? 7.Nfd2 ab5=+) 7.Bd4 Qe7 8.e4 (8.e3!?+=) 8...Qe4 9.Qe2 Qe7 (9...Qe2 10.Be2 ab5 11.cb5–/+) 10.a4 (10.Nc3!? Qe2 11.Be2=+) 10...Be6=+ 11.Qa2?? (11.a5 ab5 12.cb5 c5 13.bc6 Nc6–/+) 11...d5 (better is 11...Bc4 12.Kd1 Ba2 13.Ra2 Qd7–+) 12.Be2 dc4 13.0-0 (better is 13.ba6 Ra6 14.Qb2–/+) 13...Bd5?? (13...ab5 14.Qb2 b4 15.Re1–+) 14.Nbd2?? (14.Nc3 Be6 15.Bc4 ab5 16.Nb5 Nc6+=) 14...Qe2?? 15.Rae1 Qe6 16.Re6 Be6 17.Nc4?? Be7?? 18.Bg7 Bg4?? 19.Bh8 Nd7 20.Qb1 Ngf6 21.Bf6 Bf6 22.Re1 Kf8 23.Qh7 Bh8 24.Qh8 1–0. Bohlen,Arne (1800) – Bausch,Kathy, remoteschach.de, 2005.

4.b5 Bd7 5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nh6 9.Bc4 (9.Nc3 Be6+-) 9...Ng4 (9...Be6 10.Qe2+=) 10.0-0 (10.Nc3 Be6 11.Qe2+-) 10...Bf5 (better 10...Qg6!? 11.Nc3 Nf6+-) 11.h3+- Nh6 12.Nc3 g5? (better 12...Nd7+-) 13.Nd5 Qd8 (13...Qg7 14.Nc7 Kd8 15.Nd5+-) 14.Ne5! de5 15.Be5 Bh3 (15...Rg8 16.Bc7 Qc8 17.Nf6 Ke7 18.Ng8 Ng8+-) 16.gh3 Bd6 (16...Qc8 17.Qf3 Qf5 18.Qf5 Nf5 19.Bh8+-) 17.Bh8 g4 (17...Nd7 18.Qh5 c6 19.Qh6 cd5 20.Bd5+-) 18.Nf6 Kf8 (18...Ke7 19.Bg7 Nd7 20.Nh5+-) 19.hg4 Qc8 20.g5 (better 20.f3 Ke7 21.Qa1+-) 20...Nf5 21.Qh5 Ke7 22.Qf7 Kd8 23.Qe8 1–0. GuestXJBP – GuestVZQY, freechess.org, 2020.

4.b5 Bd7 5.e4 Qg6 6.Nc3 Ne7 (6...Nf6 7.d4 Be7 8.de5 Ne4 9.Nd5+-) 7.d4 (7.Bc4 a6 8.0-0 ab5 9.Nb5 Na6+-) 7...f6 8.h4 Bg4 9.h5 Bh5 10.Ne5 Bd1 (10...fe5!? 11.Qh5 Qh5 12.Rh5 g6+-) 11.Ng6+- Ng6 12.Rd1 Nd7 13.g3 Nb6 (13...Rd8 14.Bd3+-) 14.a4 Be7 15.f4 0-0-0 (15...d5 16.Nd5 (16.ed5?! Bb4 17.Kf2 0-0-0+-) 16...Nd5 17.ed5+-) 16.f5 Nf8 17.a5 Nbd7 18.Be2 g6 (18...Re8 19.Kf2+-) 19.Kf2 g5?? (19...Rg8+-) 20.Nd5 Re8 21.Bh5 Rd8 (21...c6 22.Be8 cd5 23.ed5 Kd8+-) 22.Ne7 Kb8 23.e5! de5 (23...de5 24.de5 Combination; 23...fe5 24.de5 Combination) 24.de5 h6 (24...Ng6 25.fg6 hg6 26.Ng6 Ne5 27.Nh8 Rh8 28.Be2+-) 25.e6 Nh7 (25...Ne6 26.fe6 Nc5 27.Ng6 Ne6 28.Nh8 Rh8 29.Rhe1+-) 26.ed7 Nf8 27.Bf6 Nd7 28.Bh8 1–0. Janek – Vindo, internet, 2018.

4.b5 Be6 5.Nc3 =.

4.b5 Be7 5.c4 Nh6 6.e3 0-0 7.Be2 Qg6 8.g3 Bh3 9.Nc3 c6 10.a4 Nd7 11.Ne4?? (better 11.d4=+) 11...Nc5 (better 11...Qe4 12.d4 Qg6-+) 12.Nc5+/- dc5 13.Bf1 (13.Ne5!? Qd6 14.bc6 bc6 15.Rb1+/-) 13...Bf1= 14.Kf1? (14.Ne5 Qe6 15.Rf1 f6=) 14...cb5 (14...e4 15.Ne1-/+) 15.ab5 (15.Ne5 Qe6 16.cb5 Bf6=) 15...a6 (better 15...e4!? 16.Ne1 Rfd8-/+) 16.Ne5= Qd6 (16...Qe6 17.ba6 Ra6 18.Ra6 ba6 19.Qf3=) 17.Nf3 (17.ba6 ba6 18.Kg2 Bf6+=) 17...Ng4 (17...ab5 18.cb5 Qd3 19.Qe2=) 18.d4 (18.ba6 ba6 19.Kg2 Rfe8+=) 18...ab5= 19.Ra8 Ra8 20.cb5 cd4 (20...c4!? 21.Qc2 Qb4=) 21.Qd4+= (worse 21.ed4 Qb4 22.Qd2 Qb5 23.Kg2 Ra2=+; 21.Bd4 Ra2 22.Nd2 Qd5 23.Qg4 Qh1 24.Ke2 Bf8 25.Bg7 h5=+) 21...Qg6 22.Kg2 Bf6 23.Qd2 Bb2 24.Qb2 h6 25.b6 (better 25.Rc1!?+/-) 25...Qe6= 26.Ra1 Re8 (better 26...Ra1!? 27.Qa1 Qb6=) 27.Qd4 Nf6 28.Rc1 Nd7 29.Rc7 Nb6 30.Rb7 Nd5 31.Rb5 Nf6 32.Re5 Qc8 33.Rc5 Qe6 34.Re5 Qc8 35.Rc5 Qb8 (35...Qe6 36.Qc4 Qd6+/-) 36.Qc3?? (36.Qc4 Rd8+/-) 36...Qa8?? (36...Ne4 37.Qd4 Nc5 38.Qc5-/+) 37.Rc7?? (37.Qb3 Rb8 38.Rb5 Rb5 39.Qb5 Kf8+/-) 37...Qa2?? (better 37...Nd5 38.Qc6 Nc7 39.Qc7 Rc8-/+) 38.Qc4+/- Qc4 39.Rc4 Kh7 40.Rc6 Ra8 41.Rc4 Ra2 (41...Re8 42.Rc7 Kg8+/-) 42.Rd4 Nh5 43.Rh4 (43.e4 g5+-) 43...Nf6+/- 44.Rd4 Kg8 (44...Nh5 45.e4 Ra7+-) 45.h4 g6 46.Ne5 Kg7 47.Nf3 h5 (47...Kg8 48.g4 h5+/-) 48.Ne5+/- Kf8 49.Kf3 Nh7? (49...Ke7 50.Nc6 Ke6 51.Nb4+/-) 50.Rb4 (better 50.Rd7+-) 50...Ra7 51.Rb8 Kg7 52.Rb5 Nf6 53.Rb6 Re7 54.Nd3 Nd5 55.Ra6 Nf6 56.Nf4 Rd7 57.Ra5 Ng4 58.Ra4 (58.Ke2 Rb7 59.Nd3 Rc7+/-) 58...Ne5 (58...Rd2 59.Nh3+/-) 59.Kg2 Ng4 60.Ra2 Rb7 61.Re2 Rb3 62.Rd2 Rb7 63.Re2 Nf6 (63...Rb3 64.e4 Kf6+/-) 64.Nd3 Ng4 65.Ne5?? (65.e4 Rb3 66.Rd2 Kf6+/-) 65...Re7?? (better 65...Ne5 66.Rd2 Kf6-+) 66.Ng4+/- hg4 67.f3 f5 68.fg4 fg4 69.e4 Kh6 70.Kf2 Rf7 71.Ke3 Re7 (better 71...Rf3 72.Kd4 Rg3+/-) 72.Kf4+- White prepares e5 72...g5? (72...Kh5 73.e5+-) 73.Kg4 (73.hg5 Kg6+-) 73...Rb7 (73...gh4 74.gh4 Re5 75.Kf4+-) 74.hg5 Kg6 75.e5 Rb5 (75...Rb4 76.Kf3 Kg5 77.e6+-) 76.Re4 Rc5 77.e6 (77.Kf4 Kf7+-) 77...Rg5 78.Kh3 Rh5 79.Kg2 Ra5 (79...Rh8+-) 80.e7 Ra2 81.Kf3 Ra3 82.Kf4 Ra6 (82...Ra8+-) 83.e8Q Kg7 (83...Kh6 84.Qf8 Kg6 85.Qf5 Kh6 86.Qg5 Kh7 87.Re7 Kh8 88.Qg7) 84.Qd7 (84.Re7 Kh6 85.Qf8 Kg6 86.Qf5 Kh6 87.Rh7) 84...Kg6 (84...Kh6 85.Qe7 Ra4 86.Ra4 Kg6 87.Ra6 Kh5 88.g4) 85.Qd5 (85.Qf5 Kh6 86.Qg5 Kh7 87.Re7 Kh8 88.Qg7) 85...Rf6 86.Kg4 Kg7 (86...Re6 87.Qe6 Kg7 88.Qd7 Kg6 89.Re6) 87.Qd7 (87.Re7 Rf7 88.Qf7 Kh6 89.Qe6) 87...Rf7 (87...Kg6 88.Qe8 Kh6 89.Qh5 Kg7 90.Re7 Rf7 91.Qf7 Kh6 92.Qe6) 88.Re6 (88.Qd4 Kh7 89.Kg5 Rg7 90.Kf6 Rg6 91.Kf7 Kh6 92.Rh4 Kg5 93.Qe5) 88...Kf8?? (better 88...Rd7 89.Kh4 Kf7+/-) 89.Qf7! Kf7 (89...Kf7 90.Kf5 Mate attack) 90.Rb6 (90.Kf5 Kg7 91.g4 Kh7 92.Re7 Kg8 93.Kg6 Kf8 94.Re4 Kg8 95.Re8) 90...Ke7+- 91.Kh5 Kf7 92.g4 Kg7 93.g5 Kf7 94.g6 Kg7 95.Rb7 (95.Kg5 Kf8 96.Rb7 Kg8 97.Kf6 Kf8 98.Rb8) 95...Kf6 96.Kh6 (96.Kh6 Ke5 97.g7 Kd5 98.g8Q Kc6 99.Qc8 Kd5 100.Rd7 Ke5 101.Kg5 Ke4 102.Qc2 Ke3 103.Rd3 Ke4 104.Qe2; 96.g7 Ke6 97.g8Q Ke5 98.Qe8 Kd4 99.Rd7 Kc5 100.Qc8 Kb4 101.Rb7 Ka4 102.Qa8) 1-0. brucepeng (2040) - joniviera (2035), lichess.org, 2021.

4.b5 Ne7 5.e3 (5.e4 Qg6 6.Nc3 Nd7=) 5...Ng6 (5...Nd7 6.d4=) 6.Be2 (6.Nc3 Be6=) 6...Be7 (6...Be6 7.Nc3=) 7.0-0 (7.Nc3 Qf5=) 7...0-0 (7...Be6 8.d4=) 8.d3 (8.Nc3 Qe6=) 8...c6 (8...d5 9.c4=) 9.a4 Qe6 (9...d5 10.Nbd2=) 10.Nfd2 (10.c4 d5=) 10...d5 11.Nb3 (11.d4 Nd7=) 11...e4 (better is 11...Nh4=+) 12.Bg4?? (12.Nc3 ed3 13.Bd3 Ne5=) 12...Qd6 (better is 12...Qg4 13.de4 Qe4–+) 13.de4 (13.Bc8 Rc8 14.de4 de4=) 13...Bg4 (13...de4 14.Nd4=) 14.Qg4+= de4 (14...Qb4 15.f3+=) 15.Qe4+/- Qe6 16.Qd3 Bf6 17.Nd4 Qe7 18.Ba3 c5 19.Nf5 Qc7 20.Nc3 b6 21.Nd5+- Qd8 22.e4 Ba1+= 23.Ra1 Nd7 24.Nd6?? Nf6?? 25.e5?? Nd5 26.Qd5=+ Qe7 27.Nf5? Qe5–/+ 28.Qf3?? Qa1 (29.Bc1 Qc1 30.Qd1 Qd1) 0–1. HeresJhonny – DanM, Caissa.com, 2004.

4.b5 Bg4 5.d3 Ne7 6.Nbd2 Ng6 7.Ne4 (7.e4 Nd7=) 7...Qd8=+ 8.c4 f5 (8...a6 9.Qb3=+) 9.Ned2= Be7 10.h3 Bf3 11.Nf3 0-0 12.e3 Bf6 13.Be2 e4 14.Nd4 Bd4 (14...c5 15.bc6 Nc6 16.de4 Qa5 17.Qd2 Qd2 18.Kd2 fe4 19.f3=) 15.Bd4+= Nd7 16.0-0 Qg5 Black prepares the advance f4 17.a4 (17.f4 Qe7=) 17...Nde5 (17...Nc5 18.de4 Nh4 19.g3 Ne4 20.Kh2+=) 18.Be5 de5 (worse 18...Ne5 19.de4 fe4 20.Qd5 Kh8 21.Qe4+/-) 19.d4 (better 19.de4!? Rad8 20.Qe1+=) 19...f4=+ 20.de5?? (better 20.c5=+) 20...f3 (20...Rad8 21.Qb3 f3 22.Bf3 ef3 23.g3-+) 21.g3? (better 21.Qd5 Kh8 22.Bf3 ef3 23.g3-+) 21...fe2 22.Qe2 Ne5 23.Kg2 Nf3 (23...Rf3 24.Rad1-+) 24.Rad1 Rf5 (24...Qh5 25.Qc2 Qf5 26.Rd5-+) 25.Rh1 (25.Rd7 Rd8 26.Rfd1 Rd7 27.Rd7 Rf7 28.Rf7 Kf7-+) 25...Raf8 26.Rd7 (26.Rhf1-+) 26...Nh4 27.Kf1 (27.Kg1 Rf2 28.Qf2 Rf2 29.Kf2 Qf5 30.Ke2 Qd7-+) 27...Rf2 (27...Qg3 28.Rg7 Kg7 29.Ke1 Rf2 30.Qg4 Qg4 31.hg4 Ng2 32.Kd1-+) 28.Qf2 Rf2 29.Kf2 Qf5 30.Ke1 (30.Ke2 Qd7 31.Rd1 Qh3 32.Rd8 Kf7 33.gh4 Qg4 34.Kd2 Qh4-+) 30...Qd7 (better 30...Nf3 31.Ke2 Qd7-+) 31.Rf1 (31.gh4 Qd3 32.Rh2-+) 31...Qd3 (31...Ng2 32.Ke2 Qd3 33.Kf2 Qd2 34.Kg1 Ne3 35.Rf2 Qe1 36.Kh2 Qf2 37.Kh1 Qg2) 32.Kf2 Qd2 33.Kg1 Nf3 (33...Qg2) 34.Kh1 (34.Rf3 ef3 35.Kf1 Qe2 36.Kg1 Qg2) 34…Qh2 0-1. ClayPigeons (2225) - GmSalazar (2290), Rated Bullet game, lichess.org, 2019.

4.Nc3 h6 5.d4 Nc6 6.Nd5 Qd8 7.b5 Be6 8.bc6 Bd5 9.cb7 Bb7 10.de5 de5 11.Be5 Bb4 12.c3 f6 13.Qa4 c6 14.Qb4 fe5 15.Qb7 1–0. mtrc – yus507, internet, 2002.

4.c4 a6 5.g3 Ne7 6.Bg2 Nd7 (6...Nbc6!?+=) 7.0-0+/- Nc6 8.a3 Nb6 9.d3 Bg4 (9...Be7 10.Nc3 Be6 11.Nd2+/-) 10.h3 Bh5 (10...Be6 11.Nc3+/-) 11.b5 (11.Nc3!?+/-) 11...ab5+= 12.cb5 Nd4?? (better is 12...Na5 13.Nbd2 Qe6+=) 13.Nd4+- ed4 14.Bb7 Ra7 15.Bc6 Kd8 16.Nd2 h6 (16...Na4 17.Ne4 Nb2 18.Qd2+- (18.Nf6?! Nd1 19.Nh5 Nc3+/-)) 17.Ne4 (better is 17.a4 Ra5 18.Nc4+-) 17...g5 (17...Qe6+-) 18.Nf6 Bg6 19.Bd4 Ra5 20.Qd2 Ra4 21.Bb6 cb6 22.Qe3 Kc7 (22...Be4 23.de4 Ra8 24.Ba8 Rh7 25.Qb6 Ke7 26.Nd5 Ke6 27.Qd8 f6 28.Qf6 Kd7 29.Bc6 Kc8 30.Qf8) 23.Nd7 (23.Nd5 Kb8 24.Qb6 Kc8 25.Qc7) 23...Bg7 24.Qb6 Kc8 25.Qb8 1–0. alexp (2505) – valerypavlovich (2100), net–chess.com, 2015.

4.c4 b6 5.Nc3 Bb7 6.e4 Nh6 (6...Qg6 7.d4+=) 7.d4+/- Nd7 8.Nd5 White is in command 8...Bd5 (8...Qd8 9.Bd3+/-) 9.cd5 Qf4 (9...Qg6 10.Qc2 a6 11.a3+/- (< 11.de5 de5 12.a3 Bd6+/-)) 10.Qc2 Rc8 (10...f5 11.Bd3+-) 11.Bb5 c5 (better is 11...ed4 12.Nd4 Rd8+-) 12.dc6 Ke7 13.0-0 Rc7 (13...ed4 14.Qa4 Ne5 15.Qa7 Kf6 16.Nd4+-) 14.Qd3 Nb8 (14...f5 15.ef5 a6+-) 15.de5 f6 (15...d5 16.Qd5 Ke8+-) 16.Qd6 Kf7 17.e6 (17...Ke8 18.Qf4+-) 1–0. Pcmvr (2080) – Ff333 (1900), internet, 2008.

4.c4 Nc6 5.a3 Nge7 6.e3 Bg4 7.Be2 Bf3 8.Bf3 (8.gf3?! Qg6=) 8...0-0-0 (8...Qe6 9.b5 Na5 10.Bc3 Nc4 11.d3=) 9.Nc3 Qh6 (9...Qe6 10.b5 Na5 11.d3+/-) 10.Nd5 (10.Qa4 a6+-) 10...Nd5 11.cd5 Ne7 12.Qa4 a6? (better is 12...Kb8!?+/-) 13.b5+- Kb8 (13...ab5 14.Qa8 Kd7 15.Qb7 Rc8+-) 14.ba6 b6 15.Bc3 (better is 15.a7!? Kb7+-) 15...f5 16.Qb5 e4 17.Be2 Qg5 18.Bd4 Nc8?? (better is 18...Ka8+-) 19.Qc6 (19.Qc6 Qe3 20.Qb7) 1–0. Fournier,Frederic (1900) – Antimandril (1690), Active (5/0), 2004.

4.c4 Nc6 5.b5 Nce7 =.

4.c4 Nc6 5.e3 Be6 (5...Nb4 6.Nc3=+) 6.Be2 (6.Qa4 Bd7=) 6...0-0-0 (6...Qg6 7.d4 d5 8.b5+=) 7.b5 (7.Qa4 Kb8 8.0-0=) 7...Na5 (7...Nce7 8.c5 dc5 9.Qa4+=) 8.0-0 (better is 8.Qa4 b6 9.Bc3+/-) 8...Nc4=+ 9.Bc4 (better is 9.Bc3!? Nb6 10.Qc2=+) 9...Bc4–/+ 10.d3 Bb5 11.Nc3 Bc6 12.Ne4 (12.e4 Ne7–/+) 12...Qg6 13.Qc2 Nf6 14.Be5?? (better is 14.Ned2–+) 14...de5 15.Ne5–/+ Qf5 16.Nc6 bc6 17.Qc6 Rd3?? 18.Nf6?? Qf6–+ 19.Qa8 Kd7 20.Rfd1 Bd6?? 21.Qh8= Rd2? 22.Qh7?? (better is 22.Rf1+-) 1–0. Trkn – Tshepo Diale, itsyourturn.com, 2001.

4.c4 Bd7 5.Nc3 e4 6.Na4 (6.Ng1 Na6=) 6...Qe7 (6...Qe6 7.Nd4 Qc4 8.a3–/+) 7.Nd4= c5 8.bc5 dc5 9.Nb5 Bc6 10.e3 Na6 11.Be2 Nf6 (11...Qg5 12.0-0=) 12.0-0 g6 (12...Qd7 13.d3=) 13.f4 (13.Nc5 Nc5 14.Bf6 Qf6 15.Nc7 Ke7 16.Na8 Qd6=+) 13...Bg7= 14.d4 (14.Be5!?=) 14...ed3=+ 15.Qd3 Rd8 (15...0-0 16.Rad1=+) 16.Qb3 b6 17.Rad1 0-0 18.Bc3?? (better is 18.Be5 Ne4 19.Bg7 Kg7 20.Nac3=) 18...Qe3–+ 19.Rf2 Ne4 (19...Rd1 20.Qd1 Ne4 21.Be1–+) 20.Be1 (20.Rdf1 Bb5 21.Bg7 Qb3 22.ab3 Kg7 23.cb5 Nb4–+) 20...Qb3 21.ab3 Rd1 22.Bd1 Nf2 (23.Kf2 Bb5 24.cb5 Nc7–+) 0–1. Trkn – Blast Byte, itsyourturn.com, 2000.

4.c4 Nd7 5.e3 Qd8 6.d3 c5 (6...Ne7 7.Be2+=) 7.b5 (7.bc5 Nc5 8.d4 Qb6+=) 7...Ngf6= 8.Be2 g6 (8...Be7 9.0-0=) 9.0-0 h5 (9...Bg7 10.a4+=) 10.Nbd2 Nb6 (10...Bg7 11.a4+=) 11.d4 e4? (better is 11...cd4!? 12.ed4 e4+=) 12.Ng5 (12.Ne4 Ne4 13.dc5 Rg8 14.cb6 Qb6+-) 12...Bf5 (12...Rh6 13.Nge4 Ne4 14.Ne4+-) 13.d5 (13.dc5!? dc5 14.Nde4 Ne4 15.Ne4 Be4 16.Bh8 Qg5+-) 13...Bh6 (13...Rg8!? 14.Bf6 Qf6 15.Nge4 Qe7+/-) 14.Nge4!+- Be4 15.Ne4 Ne4? 16.Bh8 f6 17.Qd3 Qe7 18.Bf3 Kd7 19.Be4 Rh8 20.Bg6 Qg7 21.Bf5 Kc7 22.a4 Rg8 23.Bh3 Qg6 24.Qg6 Rg6 25.Bf5 Rg7 26.Bd3 Nd7 27.f4 h4 28.Rf3 a5 29.Rh3 Re7 30.Kf2 Ne5 31.fe5 Re5 32.Re1 Bg5 33.g3 Rf5 34.Bf5 Be3 1–0. Trkn – T.Kristelijn, itsyourturn.com, 2000.

4.c4 Be7 5.Nc3 c6 6.d4 ed4 7.Ne4 Qg6 (7...Qe6 8.Qd4 Nf6 9.Neg5+=) 8.Qd4+/- Bf6? (better is 8...d5 9.Nc5 Nf6+=) 9.Nd6+- Kf8 10.Ne5 Qc2 (10...Be5 11.Qe5 f6+-) 11.Nc8 Na6 (11...g5 12.Nd6 h5 13.c5+-) 12.Qd6 Ke8 (12...Be7 13.Ne7 Ne7 14.Nd7 Kg8+-) 13.Qd7 Kf8 14.Qf7# 1–0. Trkn – VKrasnov (1710), ICC, 2004.

4.c4 Be7 5.Nc3 Bd8 6.b5 (6.d4 ed4 7.Nd4 Ne7+=) 6...Nh6 (6...e4 7.Ng1=) 7.e3 Bg4 8.Nd5 Qg6 9.h3 Be6 10.Nb4 (10.d4 c6 11.Nc3 Bc7+=) 10...Nd7 11.d4 e4 12.Nd2 Nf6 13.Qc2 (13.d5 Bd7+=) 13...0-0 14.g4 Re8 15.Rg1 (15.Nd3 A) < 15...ed3 16.Bd3 Bf5 17.Bf5 Nf5 18.Qf5+/- (18.gf5?! Qg2 19.Rf1 Qh3=); B) 15...Qg5 16.Nf4 c6=) 15...Bd7 16.Be2 (16.g5 c5 17.dc5+/-) 16...Nf5 (16...c6!?=) 17.0-0-0+= Nh4 18.g5 Nh5 19.Ne4 (19.Nd5 Nf5 (19...Bh3?? 20.Bh5 Qf5 21.Rg3+-) 20.Ne4 Kh8+/-) 19...c6 (better is 19...Bf5 20.f3 Nf3 21.Bf3 Be4 22.Be4 Re4=) 20.Bh5+- Qe4 21.Qc3 d5 22.Nd3 dc4? 23.Nc5 Qd5 24.Nd7 Qd7 25.d5! Nf5 26.dc6 Qe6 27.Bg4 f6 28.Bf5 Qf5 29.gf6 Bf6 30.Qf6 Qf6 31.Bf6 Kf7 32.cb7 Rab8 33.Bd4 g6 34.Ba7 Rb7 35.b6 Re5 36.Rd4 Rc5 37.Rgd1 Ke6 38.Rd8 Ra5 39.R1d2 c3 40.Rc2 Raa7 41.ba7 Ra7 42.Kb1 Rb7 43.Ka1 Rf7 44.a4 Ra7 45.Rd4 g5 46.Rc3 Ra5 47.Rc7 h5 48.Rb7 Rc5 49.Rb5 Rc1 50.Kb2 Rg1 51.a5 Rg2 52.Rd2 g4 53.hg4 hg4 54.Kc3 (54...Rg1 55.Kd4+-; 54.a6 g3 55.a7 Rh2 56.a8Q Rf2 57.Qg8 Kf6 58.Rb6 Kf5 59.Qg6 Ke5 60.Qe6#) 1–0. Buczinski,Henryk – Grzegorzek, Katowice, 1965.

4.c4 Ne7 5.d4 Ng6 6.e3 Bg4 7.Be2 e4 8.Nfd2 Bf5 9.Nc3 Nh4 10.Rg1 Nc6 11.a3 (11.Nce4?! Qg6 12.Bh5 Ng2 13.Kf1 Bh3 14.Bg6 Ne3 15.Ke2 Nd1 16.Bf7 Kf7 17.Kd1 Bf5+=; 11.Nde4?! Qd8+-) 11...Ng6 12.Nce4 Qh4 13.g3 Qh2 14.Nf3 Qh3 15.Nfg5 Qh2 16.Kd2 Be4 17.Ne4 Qh3 (17...Nge5+-) 18.Bg4 Qh6 19.Rh1 Nh4 20.Rh4 Qg6 21.Qf3 Be7 (21...Ne7 22.Bh5 Qf5 23.Rf4+-) 22.Bf5 0-0 (22...Bh4 23.Bg6 hg6 24.Rh1+-) 23.Bg6 fg6 24.Qh1 (better is 24.Rf4 Rfe8+-) 24...Bh4 25.Qh4 Rae8 26.Rh1 h6 27.Kd3 Ne7 28.d5 Nf5 29.Qh3 c6 (29...Rc8 30.g4 Ne7 31.g5+-) 30.g4 Ne7 31.Bg7! (31.Bg7 cd5 32.cd5+-) 1–0. combijack (1765) – momatheus22 (1635), gameknot.com, 2010.

4.c4 Qf5 5.e3 (5.Nc3 Nf6 6.d4+= e4 7.Nh4 Qd7 8.d5 Be7 9.h3=) 5...Nf6 (5...Bd7 6.Nc3 Nf6 7.a3 Nc6 8.d4 e4 9.Nd2+=; 5...Ne7 6.Nc3 Qg6 7.d4 e4 8.Nd2 f5 9.d5+=; 5...a5 6.Qa4 Bd7 7.b5 Nf6 8.Nc3 Be7 9.d4=) 6.Nc3 Be7 7.d4 e4 8.Nd2 0-0 9.Qc2 =.

4.c4 g6? 5.e3 (5.Nc3 Nd7+/-) 5...c6 (5...Qe7!?+=) 6.d4 e4 7.Nfd2 d5 8.Nc3 Bb4 9.Qb3 Bc3 10.Bc3 Ne7 (better is 10...Qe6!?+=) 11.Ne4!+- Qf5?? (11...de4 12.d5) 12.Nd6 (12...Kd8 13.Nf5 gf5 14.Qa3+-) 1–0. Greeley – Horson, redhotpawn.com, 2008.

4.c4 h5 5.e3 g5 6.d4 e4 7.Nfd2 Qf5 8.Nc3 Nf6 9.Qc2 Nc6 10.a3 (10.Nde4?! Ne4 11.Qe4 Qe4 12.Ne4 Nb4+=) 10...Bg7 11.Nde4 Ne4 12.Qe4 Ne7 13.Be2 a5 14.b5 c6 15.b6 d5 16.cd5 cd5 17.Qf5 Bf5 (17...Nf5?? 18.Nd5 Kd8 19.Nc7+-) 18.Nb5 Kd7 19.Rc1 Rhc8? (19...Rac8 20.Rc7 Rc7 21.bc7+- (21.Nc7?! Kc6+=)) 20.0-0 (20.Nc7 Rab8 21.Bh5 Be6+-) 20...Nc6 (20...Rc6 21.Nc7 (21.Bh5?! Rb6 22.a4 Bd3+/-) 21...Rb6 22.Na8 Rb2 23.Bh5+-) 21.Bh5 f6? (21...Ra6 22.Nc3 Kd6 23.Na4+-) 22.Nc7 Rab8 (22...Rc7 23.bc7 Be6 24.e4 Kc7 25.f4+-) 23.Nd5 Be4 24.Nc7 Bf8 (24...Rh8 25.Be2 Ne7 26.d5+-) 25.d5 Ne5 26.Be5 fe5 27.Bg4 Kd6 (27...Ke7 28.f3 Bd3 29.Rfd1+-) 28.Bc8 (better is 28.Nb5 Ke7 29.Rc8 Rc8 30.Bc8+-) 28...Bd5 (28...Rc8 29.f3 Bg6+-) 29.Nd5 Kd5 30.Rfd1 1–0. combijack (1760) – abbujane (1655), gameknot.com, 2011.

4.c4 Nh6 5.Nc3 e4 6.Ng1 Bf5 =.

4.c4 Nh6 5.g3 Be7 6.Nc3 Nc6?? (better is 6...c6+/-) 7.Nd5+- Qf5 8.Nc7 Kd8 (8...Kf8 9.Na8 Nb4 10.d3+-) 9.Na8 g5 (9...Nb4 10.d3+-) 10.Qa4 Bd7 (10...Bf6 11.b5 e4 12.Nh4+-) 11.b5 Nb8 (11...g4 12.Nh4 Bh4 13.gh4 Nd4 14.Bd4 ed4 15.Qa7 Ke7 16.Qb7 Kf6+-) 12.Qa7 Kc8 13.Nb6 Kc7 14.Nd5 (14.Nd5 Kc8 15.Ne7 Kd8 16.Nf5 Nf5 17.Qb8 Bc8 18.Bh3+-) 1–0. pcmvr – preethan (2135), net–chess.com, 2015.

4.c4 Nh6 5.h3 b6 (5...Nc6 6.b5 Ne7 7.e4=) 6.e3 Qg6 7.d4 e4 8.Nfd2 Be7 9.Nc3 Bb7 (9...f5 10.Nd5 Bd8 11.Nf4+=) 10.Qc2 c6 11.Qe4 Qe4 12.Nde4 d5 13.cd5 cd5 14.Nd2 Bb4 15.Bb5 (better is 15.Nb5 Kd7 16.Rc1+=) 15...Nc6? (better is 15...Nd7+=) 16.Nd5+- Bd2 (16...Kd8 17.Rd1+-) 17.Kd2 0-0?? (17...Kd8+-) 18.Bc6 (18...Bc6 19.Ne7 Kh8 20.Nc6+-) 1–0. Kuhlmann,Antonius Egidius J – Heribert,K, corr, 1985.

4.d3 a5 5.a3 ab4 6.ab4 Ra1 7.Ba1 Be7 8.e4 d5 (better is 8...Qg6=) 9.Be5+/- Bb4? (better is 9...Qg6 10.Bc7 Na6+/-) 10.c3+- Qb6 (10...Qg6 11.Qa4 Nd7 12.Qb4 (worse is 12.cb4 de4 13.Nfd2 ed3 14.Bc7 Ngf6+-) 12...Ne5 13.Ne5+-) 11.cb4 (better is 11.Bg7!? de4 12.Nd4 Nf6 13.Bh8 Qd4 14.Bf6 Qf6 15.cb4 Qe7 16.de4 Qe4 17.Qe2 Qe2 18.Be2 Nc6+-) 11...Qb4 12.Bc3 Qf8 13.ed5 Bg4 (13...Nd7 14.Qd2+-) 14.Be2 (better is 14.Qa4 Kd8 15.Qg4 Nf6 16.Bf6 gf6+-) 14...f6 (14...Bc8 15.Be5+-) 15.0-0 (15.Qa4!? Bd7 16.Qa8 Kf7 17.Qb7 Ne7+-) 15...Qd6 16.Nd4 Bd7 17.Bh5 g6 18.Bg4 Bg4 19.Qg4 Qd5 20.Re1 Kf7 21.Qc8 Nd7 22.Qc7 Ne7 23.Qf4 g5 24.Qe3 h5 25.Qe7 Kg6 26.Qe4 Qe4 27.de4 Ne5 28.Nf5 Nd3 29.Rd1 Nf4 30.Kf1 Re8 31.f3 g4 32.Rd6 gf3 33.Rf6 Kg5 34.gf3 Rd8 35.Rd6 Rc8 36.Bf6 Kg6+- 37.Ne7 (37.Ne7 Kf7 38.Nc8+-) 1–0. Fournier,Frederic – lagadto, Active, 2009.

4.d4 Nc6 5.b5 Nd4 6.Nd4 ed4 7.Bd4 Qf5 8.e3 Bd7 9.Bd3+= Qg4 10.0-0 Qd1 11.Rd1 Ne7 12.c4 Nf5 13.Bb2 f6 (13...a6 14.a4+=) 14.a4 Kf7 (14...a6 15.Nc3 Ne7 16.Nd5+-) 15.Nc3 c6 16.g4 (16.a5 a6+-) 16...Nh6 17.h3 Be7 18.Ne4 (18.a5 a6+-) 18...f5+= 19.gf5 Bf5 20.Nd6 Bd6 21.Bf5 Nf5 22.e4 cb5 23.ef5 Be7 (23...Rhd8 24.ab5 a5 25.ba6 ba6 26.Rd5+=) 24.ab5 (24.Rd7 b4 25.Re1 Rhe8 26.Bg7 Kg7 27.Ree7 Re7 28.Re7 Kf6 29.Rb7 a5+-) 24...Rhd8 25.Rd8 Bd8 26.c5 a5 27.Rd1 (27.ba6 ba6 28.Be5+-) 27...Rc8? (better 27...Bf6!? 28.Ba3 Ke8+=) 28.Rd7+- Be7? (28...Ke8 29.Rg7 Rc5 30.Rg8 Kd7+-) 29.Bg7! Ke8? (29...Kg7 30.Re7 Double attack (30.Re7 Deflection; 30.Re7 Overloading)) 30.Rb7 Rc5 31.f6 Rg5 32.Kf1 Bb4 33.f7 Kd8 34.f8Q (34.f8Q Bf8 35.Bf8+-) 1–0. GuestQSVZ – GuestWFDZ, freechess.org, 2018.

4.d4 Nc6 5.de5 Ne5 (< 5...de5 6.b5 Bb4 7.c3+=) 6.Qc1 (6.Nc3 Be6=) 6...Be6 7.Nbd2 Nf3 8.Nf3 Qe7 9.e3 f6 10.Be2 Bg4 (10...d5 11.a3=) 11.0-0+= Nh6 (11...d5 12.Bd4+=) 12.h3 Bf3 (12...Be6 13.Nd4+=) 13.Bf3+/- (13.gf3?! Qe6 14.Kg2 0-0-0=+) 13...Rb8 (13...0-0-0 14.Rd1+/-) 14.c4 Nf7 15.e4 (15.Qc2 c6+/-) 15...Ne5 16.Be5 de5+= 17.Bh5 g6=+ 18.Bd1 Qb4 19.Bb3 c5 20.f4 Bd6 21.fe5 Be5–/+ 22.Qh6? Rd8?? 23.Rad1 Bd4 24.Kh1 Kd7 25.Qg7? Kc8–/+ 26.Qe7 Rhe8 27.Qh7=+ g5 28.Qf5 Kb8 29.Rb1 Qc3 30.Qh7 Qa5?? 31.Ba4!+/- Qc7 32.Qc7 Kc7 33.Be8 Re8 34.Rfe1 b6 35.a4 Kc6 36.g4 Kd6 37.Kg2 Ke5 38.Kf3 Rh8 39.Kg2 Kf4 40.a5 Rb8 41.ab6 ab6 42.Rb5 Rb7 43.Reb1 Ke4+/- 44.Rb6 Rb6+= 45.Rb6 Kd3 46.h4 gh4= 47.Kh3 Kc4 48.Kh4 Kd3 49.Rd6 c4=+ 50.Rc6 c3 51.g5 fg5 52.Kg5–+ c2?? 53.Rc2= Kc2 ½–½. var – GARYPAULN, Live Game Caissa's Web, 2004.

4.d4 ed4 5.Nd4 (5.Bd4 Qf5=) 5...Qg6 (5...Nc6 6.a3=) 6.Bc3 (6.c4 a5 7.b5 Nd7+=) 6...Nf6 7.e3 Bg4 (7...Ne4=) 8.Be2 (better 8.f3!? Bd7 9.Qd2=) 8...Be2–/+ 9.Qe2 (9.Ne2 Qg2 10.Rg1 Qh2 11.Bf6 gf6–/+) 9...Qg2 10.Rf1 (better 10.Qf1 Qf1 11.Rf1–/+) 10...Qh2 (10...Nbd7 11.f3 Qg5 12.Nb5–/+) 11.Nd2?? (better 11.Qb5!? Nbd7 12.Qb7+-) 11...Nbd7 (11...c6 12.0-0-0–+) 12.N2f3 (12.Nb5!? 0-0-0 13.Nf3–/+) 12...Qh5–+ 13.0-0-0 (13.Nb5 Kd8–+) 13...c6 (13...0-0-0 14.Rh1 Qg6 15.Nh4–+) 14.b5 (14.Rh1 Qd5 15.Kb1 c5–+) 14...Ne5 (14...Qc5 15.Bb2–+) 15.Ne5 (better 15.bc6!? Nc6 16.Nc6–/+) 15...de5–+ (15...Qe5?! 16.bc6 bc6 17.Qa6=+) 16.Qh5 Nh5 17.Nf5 cb5 (17...Ba3 18.Kd2 f6 19.bc6 0-0-0 20.Ke2 bc6 21.Ba5–+) 18.Nd6 (better 18.Be5!? Ba3 19.Bb2 Bb2 20.Kb2–/+) 18...Bd6 19.Rd6 0-0 (19...f6 20.Rh1 g6 21.Rhd1–+) 20.Rfd1 (better 20.Be5!? f6 21.Bb2–/+) 20...f6–+ 21.f4? (21.Rd7 Rf7–+) 21...Ng3 (21...ef4!? 22.R6d5 g5 23.Rb5–+) 22.fe5 Ne4 23.Rd7 (23.Rd7 Nc3 24.ef6 Rf6 25.Rh1–+) 0–1. Nautiluschess – Heggis, internet, 2001.

4.d4 e4!? 5.Nfd2 d5 =+.

4.d4 e4 5.Nfd2 Nh6 6.Ne4 Qh4 7.Qd3 Bf5 8.Nbc3 Ng4? 9.Qb5+- Nc6 10.Qf5 Nd4 11.Qd5?? Nc2+= 12.Kd2 Na1 13.Ba1 0-0-0 14.Qf7 Be7? 15.Qg7?? Rde8?? 16.Qd4 Rhf8 17.Qa7 Bg5? 18.e3 Nf2 19.Nf2 Qf2 20.Ne2?? Be3–+ 21.Qe3 Qe3 22.Ke1 Rf1! 23.Rf1 Qe2 0–1. mroli – taff, net–chess.com, 2001.

4.d4 Ne7 5.de5 de5 6.Be5 Qb6 7.a3 f6 8.Bg3 Bf5 9.e3 Nbc6 10.Bd3 Ne5 11.0-0 Rd8 12.Nd4 a6 13.Nc3 g6 14.Ne4 N7c6? 15.Nf5+- gf5 16.Nf6 Ke7 17.Bh4 Bg7 18.Nd5 Ke6 19.Nb6 cb6 20.Bd8 Rd8 21.Rb1 b5 22.Qe2 Rd7 23.Rfd1 Nc4 24.Bc4 bc4 25.Qc4 Ke7 26.Qh4 (26...Ke6 27.Rd7 Kd7 28.Qh7+-) 1–0. gtate – snachmann, net–chess.com, 2001.

4.d4 Bg4 5.de5+= de5 6.Ne5 (better is 6.Be5 Qe7 7.Bc3+=) 6...Be2?? (better is 6...Bb4 7.Nd2 Nd7=) 7.Qe2+- Bb4 8.Nd2 (8.c3 Be7 9.Qb5 Nc6 10.Qb7 Qe5 11.Be2 Rd8 12.Qc6 Kf8+-) 8...Bd2 (8...Ne7 9.0-0-0 Qb6 10.Nec4+-) 9.Kd2 (9.Qd2 Qe7 10.0-0-0 Nf6 11.Bb5 c6+-) 9...Qf4 10.Kd1 Ne7 11.g3 Qb4 12.Nd3 Qd6 13.Bg2 c6 14.Kc1 0-0 15.Rd1 Qc7 16.Qg4 Ng6 17.Be4 Nd7 18.f4 Nf6? 19.Qg5 Ne4–/+ 20.Qg4 Qb6 21.f5=+ Qe3 22.Kb1 Nd2 23.Rd2 Qd2 24.fg6 fg6 25.Qd4?? 25...Rf1–+ 26.Bc1 0–1. var – Whodareswins, Live Game Caissa's Web, 2004.

4.e3 a5 5.b5 c6 6.Nc3 (6.Be2 Qg6=) 6...Bg4 (6...d5 7.bc6 bc6 8.e4=) 7.Be2+= Nd7 (7...a4 8.a3+=) 8.d4 (8.Ne5!? Be2 9.Nd7 Bd1 10.Nf6 Nf6 11.Nd1 cb5 12.Bf6 gf6 13.Rb1+-) 8...Be7 (8...Bf3 9.Bf3 d5 10.de5 Ne5 11.Be2+=) 9.Rb1 Nh6 10.bc6 bc6 11.d5 c5 12.h3 Bf3 13.Bf3 0-0 14.0-0 (14.h4 g6+-) 14...Nb6 (14...Qh4 15.Be2+=) 15.Bc1 (15.Be2 Rfb8+=) 15...Rab8 (15...Rfb8 16.Qd3=) 16.e4 (16.Qe2 Qg6+=) 16...Nc4 (16...Nd7 17.Be3+=) 17.Nb5 Qg6 (17...Rfe8 18.Qe2 Nb6 19.Na7+-) 18.Qe2 Nb6 19.Na7 Bh4? (better 19...Na8 20.Nc6 Rbe8+-) 20.Nc6 Rb7 (20...f5+-) 21.Qa6 (worse 21.Na5 Rbb8 22.Nc6 f5+-) 21...Rfb8 (21...Nd5 22.Qb7 Nc3 23.Ra1+-) 22.Nb8 Rb8 23.Rb6 Rd8 24.g3 (better 24.Be3 f5 25.ef5 Nf5+-) 24...Bg3 (24...Be7 25.Qa7 Kf8 26.Rb7+-) 25.fg3 Qg3 (25...f5 26.Bg2 fe4 27.Qa7+-) 26.Bg2 f5 (26...Qg6 27.Ba3+-) 27.Rd6 Rf8 Black prepares the advance f4 (27...Re8 28.Re6 Rb8 29.Qc6+-) 28.Rh6 gh6 29.Qe6 Rf7 30.Bh6 f4 (30...Qe3 31.Be3 f4 32.Bf4 Kf8 33.Bh6 Kg8 34.Qf7 Kh8 35.Bg7) 31.Qe8 (31.Qe8 Rf8 32.Qf8) 1–0. Adlai – Graven, corr, 2018.

4.e3 c6 5.c4 Nd7 6.a3 Qe6 7.Qc2 Ngf6 8.Be2 Be7?? (better 8...a5=) 9.Ng5+- h6 (9...Qg4 10.Bg4 Ng4 11.Nf3+-) 10.Ne6 fe6 11.Nc3 (11.Qg6 Kf8+-) 11...g5 (11...0-0 12.Qg6+-) 12.d4 ed4 13.ed4 b6 14.Ne4 Rf8 15.Nf6 Nf6 16.Bf3 Bb7 17.b5 Rc8 (17...d5 18.cd5 cd5 19.Qg6 Kd8 20.Qh6+-) 18.bc6 Bc6 19.Bc6 Kd8 (19...Rc6 20.Qa4 Kd7 21.Rc1+-) 20.Bb5 d5 21.0-0 (21.Qe2!? dc4 22.Rc1 c3 23.Qe6 g4 24.Rc3 Rc3 25.Bc3 Re8+-) 21...dc4 22.a4 Nd5 23.Bc4 Nb4 (23...b5 24.ab5 Nb6 25.Ra7 Rc4 26.Qe2+-) 24.Qb3 a5 25.Be6 Rc6 26.Ba3 (better 26.Rac1!? Kc7+-) 26...Nc2 27.Be7 (27.Be7 Ke7 28.Bd5 Nd4 29.Qe3 Re6 30.Qd4+-) 1–0. Petery – Esad, playchess.de, 2001.

4.e3 c6 5.c4 Nd7 6.a3 h6 7.Nc3 (7.Bd3 Qe6 8.Qc2 Ngf6+=) 7...Be7 (7...Qg6 8.Nh4 Qe6 9.Bd3+-) 8.d4+- Qg6 9.Bd3 f5 (9...Qg2 10.Rg1 Qh3 11.Rg7+-) 10.e4+- f4 11.0-0 Qf7 (11...Ngf6 12.c5 0-0 13.Ne2 dc5 14.Qb3 Kh8 15.de5+-) 12.Ne2 g5 (12...Ngf6 13.de5 Ne5 14.Be5 (14.Ne5?! de5 15.Be5 f3 16.gf3 Bh3+-) 14...de5 15.Ne5+-) 13.de5 g4? (better 13...de5 14.c5 Qf6+-) 14.e6! Qe6 15.Bh8 gf3 16.Nf4 Qg4 (16...Qf7 17.Qf3 Ne5 18.Qg3+-) 17.Qf3 Qf3 18.gf3 Bf6 (18...Kf7 19.c5! Ne5 20.Bb1 Nf3 21.Kg2 Nh4 22.Kg3+-) 19.Bf6 Ndf6 (19...Ngf6 20.Be2+-) 20.Rfd1 Bd7 (20...Nd7 21.Bc2+-) 21.Bc2 (better 21.Be2 Ke7+-) 21...0-0-0 (21...Ke7 22.c5 dc5 23.bc5+-) 22.Rd6 Kc7 (22...Nh7 23.h4 Rf8 24.Ng6+-) 23.Rad1 h5 (23...Re8 24.c5 Rf8 25.Rd7 Nd7 26.Ne6 Kc8 27.Rd7 Kd7 28.Nf8 Ke7 29.Ng6 Kd8 30.e5+-) 24.e5 Ne8 25.R6d4 Ng7 (25...Ne7 26.Be4 h4 27.e6+-) 26.e6! Nf5 (26...Be6 27.Rd8 Pinning (27.Rd8 Deflection); 26...Ne6 27.Nh5 Deflection) 27.Rd7 Rd7 28.ed7 Nd6 29.Rd6! Kd6 (29...Kd6 30.d8Q Mate attack) 30.d8Q (30.d8Q Ke5 31.Qg8 Kd4 32.Ne2 Ke5 33.Qg6 a6 34.f4) 1–0. Leonco – Sujan, internet corr, 2018.

4.e3 Nc6 5.a3 a5 6.b5+- Nce7 7.Nc3 c6 (7...e4 8.Nd4 Qg6 9.f3+-) 8.Rb1 cb5? (better 8...Qe6+-) 9.Bb5 (9.d4 e4 10.Bb5 Kd8 11.Ne4 Qg6+-) 9...Kd8 (9...Nc6 10.d4+-) 10.d4 ed4 (10...e4 11.Ne4 Qg6+-) 11.Ne4 Qe6 (11...Qg6 12.Qd4 Kc7 13.Nd6 Qd6 14.Qc4 Nc6 15.Be5+-) 12.Nfg5 Qf5 (12...Qg6 13.Nd6! Nh6 14.Qd4 Nd5 15.Nc8 Qg5+-) 13.Nd6 Qg5 (13...Qg4 14.Be2 Qd7 15.Ngf7 Kc7 16.Bd4+-) 14.Nf7 Kc7 15.Ng5 de3 16.Be5 Kb6 17.Qd4 1–0. Pierre – Schwadronner, internet, 2019.

4.e3 d5? 5.Be5+- Qg6 (better 5...Qd8 6.Nc3 Nf6 7.Bf6 gf6+-) 6.Nc3 f6 (6...Ne7 7.Bc7 Nbc6 8.Qb1+-) 7.Nd5 Na6 8.Ba6 Qg2 (8...fe5 9.Nc7 Kd8+-) 9.Nc7 Kf7 (9...Kd8 10.Rg1 (10.Na8?! Qh1 11.Bf1 fe5+-) 10...Qh3 11.Bf1+-) 10.Bc4 Ke7 11.Rg1 Qh3 12.Bg3 Bg4 13.Na8 Bf3 14.Qf3 Nh6 15.Bd6! Kd6 (15...Kd8 16.Qh3 f5 17.Qh4 g5 18.Qg5 Kd7 19.Qf6 Bd6 20.Bb5 Kc8 21.Qh8 Ng8 22.Qg8 Bf8 23.Qf8) 16.Qh3 Kc6 (16...Ng4 17.Qg4 f5 18.Qf4 Ke7 19.Qc7 Kf6 20.f4 Bb4 21.Qg7) 17.Qc8 Kd6 18.Qc7 1–0. Vendelo – Tomotor, internet free game, 2018.

4.e3 Nd7 5.c4 b6 6.Nc3 Bb7 7.Nd5 Qd8 8.d4 Bd5 9.cd5 Ngf6 10.de5 de5 11.a3 Bd6 12.Bb5 0-0 13.Bc6 Rb8 14.Qa4 a5 15.0-0 (15.ba5 Nc5 16.Qc2 e4+=) 15...Ne4?? (better is 15...e4 16.Nd4 Ne5+/-) 16.Bd7+- ab4 17.Bc6 (17.ab4!? Ng5 18.Ng5 Qg5+-) 17...Nc5 (17...b5 18.Qc2 (18.Bb5?! ba3 19.Be5 Be5 20.Qe4 Ba1+-) 18...ba3 19.Ba3+-) 18.Qd1 (better is 18.Qb4 Nd3 19.Qc3 Nb2 20.Qb2 e4+-) 18...Qf6 (18...e4 19.ab4 ef3 20.bc5 bc5+-) 19.ab4 Ne4 20.Qd3 Ng5 21.Ng5 Qg5 22.e4 Bb4 23.Ba3 Bd6 24.Bd6 cd6 25.Ra6 Rfc8 26.Rb1 f6 27.Rab6 Rb6 28.Rb6 Qc1 29.Qf1 Qc5 30.Qb1 Kf7 31.g3 Kg6 32.Bd7 Rc7 33.Rc6 Rc6 34.dc6 h5 35.Qb7 h4+- 36.c7 hg3 37.hg3 Kg5 38.c8Q Qc8 39.Bc8 g6 40.f3 d5 41.Qd5 Kh5 42.Qe6 f5 43.ef5 gf5 44.Qf5 Kh6 45.Qf6 Kh7 46.Bf5 Kg8 47.Bg6 e4 48.Qf7 Kh8 49.Qh7 1–0. forsetinn – sumitank, gameknot.com, 2013.

4.e3 Be7 5.c4 Nh6 6.d3 Bg4 7.Be2 0-0 8.Nbd2 Nc6 9.a3 Nd8 10.h3 Bf3 11.Bf3 (worse is 11.gf3 Qg6=) 11...Nf5 12.Ne4 (12.Be4!?+/-) 12...Qg6+= 13.g4 Nh4 14.Qe2 f5 15.gf5 Rf5 16.Bh5?? (better is 16.Bg4 Rf8 17.Bh5+=) 16...Rh5–+ 17.0-0-0 Rf5 18.Rdg1 Qf7 19.f4 g6 20.fe5 de5 21.Rf1 Rf1 22.Rf1 Qe6 23.Qf3 (23.Qg4 Nf5 24.Rf3–+) 23…Nf3 (23...Nf3 24.Rf3 Nf7–+) 0–1. Fournier,Frederic (1850) – girovi (1855), Active, 2008.

4.e3 Be7 5.d4 ed4 6.Bd4 Qg6 7.Bd3 f5 8.g4 Nf6 (8...Nh6 9.Rg1 Qf7 10.gf5 Nf5 11.Bf5 Qf5 12.Nc3+/-) 9.gf5 Bf5? (better is 9...Qh5 10.Rg1 Nc6+-) 10.Nh4+- (10.Nh4 Bd3 11.Ng6 (11.cd3?! Qf7=; worse is 11.Qd3 Qd3 12.cd3 Nc6–/+) 11...Bg6 12.Nc3+-) 1–0. pierred – anony, internet, 2014.

4.e3 h5 5.c4 h4 (5...Nc6 6.b5 Nce7 7.Nc3=) 6.Nc3+= c6 7.Bd3 (7.d4 Bf5+=) 7...Qh6 (7...h3 8.g3=) 8.h3 f6 (8...Nf6 9.a4=) 9.0-0 (9.Qa4 Ne7+=) 9...Ne7 (9...g5 10.Nh2+=) 10.Qa4 (10.Bc2+/-) 10...Nf5 (10...g5!? 11.Ne4 Ng8=) 11.b5 (11.Nd5 Na6+/-) 11...Bd7 (11...Ne7 12.Ba3 f5 13.e4+/-) 12.Qa5 (12.Qb3 Qg6+/-) 12...b6 13.Qa4 a5 (better is 13...Ne7!?+/-) 14.Bf5+- Bf5 15.bc6 Qg6 16.c7 (16.Kh2 Na6+-) 16...Nd7 17.Qc6 Rc8 18.Kh1 e4 (18...Be7+-) 19.Nd4 Be7 20.Nd5 (20.Nf5?! Qf5 21.Nb5 Qe6+-) 20...Be6 (20...Kf8 21.Ba3 Nc5 22.Nb6 a4+-) 21.Ne6 Kf7 22.Qd7 (22.Qd7 Rhe8 23.Nd8 Kg8 24.Qc8 Bd8 25.cd8Q Rd8 26.Qd8 Kh7 27.Qf8+-) 1–0. Janek – bitsky, internet, 2017.

4.e3 h6 5.h3 Nc6 6.b5 Nce7 7.Nc3 Be6 (7...Qe6 8.a4+-) 8.d4 ed4 9.Nd4 0-0-0 10.Bd3 Qg5 11.Nce2 Qg2 (11...Bd7 12.0-0 Bh3+=) 12.Rg1 Qh3? (12...Qd5 13.Ne6 Qe6+-) 13.Nf4 Qh2 (13...Bg4 14.Rg4 Qh1 15.Ke2 Qd1 16.Rd1+-) 14.Nf3 (14.Nf3 Qg1 15.Ng1+-) 1–0. Pierre – Tybling, internet, 2019.

4.e3 Nh6 5.c4 Nd7 6.Nc3 a6 7.d4 Nb6 (better 7...a5!?+=) 8.de5+- de5 9.c5 Nd7 10.Nd5 Qd8 11.Ne5 Ne5?? (11...Ra7+-) 12.Be5 Be6 (12...Bg4 13.Qd4 Rc8 14.Bg7 Bg7 15.Qg7 Qd5 16.Qh8 (16.Qh6 Rd8 17.Bb5 ab5-/+) 16...Ke7 17.Qc3+- (17.Qh7 Nf5 18.f3 Qe5=+)) 13.Nc7 Qc7 (13...Ke7 14.Qd6 Qd6 15.cd6 Kd7 16.Na8+-) 14.Bc7 Be7 (14...Rc8 15.Bf4 Rd8 16.Qa4 Bd7 17.Qa5+-) 15.Qf3 0-0 (15...Bc8 16.Bd3+-) 16.Qb7 Rae8 (16...a5 17.Be5 Bh4 18.g3+-) 17.Ba6 Bf6 18.Rc1 Ng4 (18...Nf5 19.Bc4+-) 19.Bd6 Bb2 20.Rc2 Bf6 21.Bf8 Kf8 22.c6 Bc8 23.Qb5 Bf5 24.Qf5 Re3 25.fe3 Ne3 26.Qc8 Ke7 27.Qd7 Kf8 28.Qd6 Be7 (28...Ke8 29.c7 Nc2 30.Kd1 Ne3 31.Ke2 Be7 32.c8Q Bd8 33.Qcd8) 29.Qb8 Bd8 30.Qd8 1-0. PEREIRA – Whitak, internet, 2021.

4.e4 a6 5.d4 Qg6 (5...Bg4 6.b5=) 6.Nc3 Nf6 (better is 6...Nc6!?=) 7.de5+/- Ne4 8.Nd5 Bg4?? (better is 8...Kd8+=) 9.Nc7+- (9...Kd8 10.Na8+-) 1–0. pcmvr (1700) – eberry (1860), net–chess.com, 2006.

4.e4 Nc6 5.b5 Na5 6.d4 Bg4 (6...Qg6 7.Nbd2 ed4 8.Bd4+=) 7.Be2 (7.Bc3 b6+/-) 7...0-0-0 (7...Bf3 8.gf3 a6 9.a4+=) 8.0-0 (8.Qd3 Qf4+=) 8...Nh6 (8...Bf3!? 9.Bf3 Nc4+/-) 9.Nbd2 Be7 (9...Re8 10.Bc3 b6 11.de5 de5 12.Ne5+-) 10.de5 (10.Bc3 b6+/-) 10...de5 11.Ne5 Be2 12.Qe2 Rhe8 13.Nd3 Qg6 (13...Qg5 14.Rab1+/-) 14.Qe3 (14.Bc3 Qb6+-) 14...Bg5 (14...Kb8!?+/-) 15.f4+- Re4?? (15...Bf6 16.e5 Kb8+-) 16.Ne4 (16...Be7 17.Qa7 Qb6 18.Qb6 cb6 19.Bg7+-) 1–0. Wall,Bill – Predy, internet, 2003.

4.e4 Nc6 5.b5 Nd4 6.Nd4 ed4 7.Bc4 Qg6 8.0-0 (< 8.Bd4 Qg2 (< 8...Qe4 9.Qe2 Qe2 10.Be2=) 9.Rf1 Qe4 10.Qe2 Qe2 11.Ke2 Be6 12.Be6 fe6–/+) 8...Qf6 (8...Qe4?? 9.Re1 Qe7 10.Re7 Ne7 11.Qf3+-) 9.c3 dc3 10.Bc3 Qg6 11.f4 Nf6 (11...Qe4?? 12.Re1 Qe1 13.Qe1 Ne7 14.Bd5+-) 12.f5 Qh6 13.Qb3 Bd7 (better is 13...Ne4!? 14.Bf7 Kd8+=) 14.Bf7+- Kd8 15.Be6 Ng4 16.h3 Be6 17.fe6 Ne5? (better is 17...Nf6+-) 18.Qd5 c6 19.bc6 Nc6 (19...bc6 20.Rf8! Ke7 21.Rh8 cd5 22.Ra8 Qe6 23.Ra7 Kf6+-) 20.Rf8! (20...Rf8 21.Qd6 Kc8 22.Qf8 Kc7 23.Qf7 Kb6 24.Na3+-) 1–0. justpawn – mgwili2, HCL–B2221 playchess.de, 2003.

4.e4 Nc6 5.Bb5 =.

4.e4 Ne7 5.d4+= Ng6 6.de5 Ne5 7.Ne5 de5 8.a3 Bd6 9.Bc4 0-0 10.0-0 c5 11.bc5 Bc5=+ 12.Bd5 Qe7 13.c4 Nc6 14.Nc3 a6 15.Qf3 Be6 16.Rad1 Nd4 17.Qd3 Nc6 18.Be6+= fe6 19.Qd7 Rad8 20.Qe7 Ne7 21.Rd8 Rd8 22.Ne2?? Rd2–+ (23.Nc1 Rb2–+) 0–1. vello2 – DanM, Live Game Caissa's Web, 2005.

4.e4 Ne7 5.h3 Ng6 6.d4 Be7 7.Nc3 Nf4 8.g3+/- ed4 9.Nd4 Ne6 10.Nd5 Qg6 11.Nf5 Bd8 12.Bg2 b5 13.h4 h5 14.Qe2 a6 15.a4 Bb7 16.Nfe3 c6 17.Nf4 Nf4+= 18.gf4 Nd7 19.Rd1 Bb6 20.Kf1 ba4 21.Nf5+/- Bc7 22.Rg1 a5? 23.Ng7 Kd8+/- 24.Bh3 Qh7 25.ba5 Ba6 26.c4+- d5?? 27.ed5 cd5 28.Rd5 Qb1 29.Rd1 Bc4 30.Rb1 Be2+- 31.Ke2 Rh6 32.Nf5 Rc6 33.Rg8 (33...Nf8 34.Rf8 Kd7 35.Ne3 Re6 36.Be6 fe6 37.Ra8 Bf4 38.Rd1 Kc6 39.Ra6 Kc5 40.Ba3 Kb5 41.Rb6 Ka5 42.Nc4#) 1–0. thotares (1660) – vallabhan, internet, 2007.

4.e4 Qf4 5.Nc3 Nf6 =.

4.e4 g5 5.d4+= Nd7 6.Nc3 c6 7.b5 (7.d5 Nb6+=) 7...g4= 8.bc6 bc6 9.de5 Ne5 (9...de5 10.Nd2=) 10.Ne5+= de5 11.Bc4 Be6 12.Be6 fe6? (better is 12...Qe6 13.0-0 Bc5+=) 13.Qg4+- Nh6 14.Qh5 Ke7 (14...Nf7!?+-) 15.Rd1 Rd8?? (15...Qf7 16.Qh3 Rg8+-) 16.Ba3 Rd6 17.Bd6 (17…Kd7 18.Bf8 Kc7 19.Qe8 Qf2 20.Kf2 Ng4 21.Kg3 Rf8 22.Qe7 Kb8 23.Qd6 Kb7 24.Rb1 Kc8 25.Rb8) 1–0. tech17 (1650) – tromar, GameColony.com, 2002.

4.e4 Qg6 5.Nc3 Nf6 =.

4.g3 Be6 5.Bg2 Nd7 6.0-0 g6 (6...d5 7.Ne1=+) 7.Nc3= Bg7 (7...d5 8.Ne1 0-0-0 9.Nd5 Bd5 10.Bd5 Bb4 11.Nd3+=) 8.d4 Ne7 (8...0-0-0!?=) 9.de5 Ne5 10.Ne5 de5 11.Ne4 (11.Bb7 Rd8 12.Ne4 Qf5+=) 11...Qf5+= 12.f4 0-0 (12...Nd5 13.Qd3 0-0 (13...Nb4?? 14.Qb5 Bd7 15.Qb4+-) 14.fe5 Qh5+- (14...Nb4 15.Qd2 Qh5 16.Qb4+-)) 13.fe5+- Qh5 14.Nf6 Bf6 15.ef6 Nd5 (15...Rfd8 16.Qc1 Nd5 17.Bf3+-) 16.Qd4 (16.Qd2 Rfd8+-) 16...Rfd8 17.Rad1 Qe2 (17...Rd7+-) 18.Rfe1 (18.Rf2 Qe3 19.Qd2+- (19.Bd5?! Qd4 20.Bd4 Rd5=)) 18...Qg4?? (18...Qc2 19.b5 h5+-) 19.Qg4+- (19.Bd5?! Qd4 20.Rd4 Rd5 21.Rd5 Bd5+-) 19...Bg4 20.Rd5 (20.Bd5?! Bd1 21.Rd1 c6+-) 20...c6 21.Rd8 Rd8 22.Re7 Rd1 23.Kf2 Rd2 (23...h5 24.Ke3 (24.Rb7?! Rd2 25.Kg1 Rd1 26.Bf1 Bh3+-) 24...Re1 25.Kf4+-) 24.Ke3 Rd8 (24...Re2 25.Kd3 Re7 26.fe7+-) 25.Rb7 h5 (25...a6 26.Bc6 Be6 27.a4+-) 26.Ra7 Re8 (26...Rb8 27.a3 Rc8 28.c4+-) 27.Re7 Re7 (27...Bd7+-) 28.fe7 Bd7 29.Bf6 Be8 30.a4 (30.a4+-) 1–0. Fels,Bernhard (2030) – Mehmet,Isliyen, BI–2010–P–00001, 2010.

4.g3 Bg4 5.Bg2 a6 6.Nc3 Nd7 (6...Nc6!?+/-) 7.Nd5+- Qd8 8.Ne3 Bf3 9.ef3 h6 (9...Ngf6 10.0-0+/-) 10.0-0 Ngf6 11.f4 ef4? (better is 11...c6+-) 12.Nf5 fg3 (12...Qc8 13.Re1 Kd8+-) 13.Re1 Ne5 14.f4 Nfd7 (14...Kd7 15.fe5 gh2 16.Kh2 de5 17.Be5+-) 15.fe5 (15.Be5?! de5 16.fe5 gh2 17.Kh2 Qg5=; worse is 15.hg3 Qf6 16.Ne3 0-0-0+-) 15...Ne5 (15...gh2 16.Kh2 de5 17.Qf3+-) 16.Be5 (better is 16.d4 gh2 17.Kh2+-) 16...Kd7 (16...de5 17.Re5 Kd7 18.Rd5 Bd6 19.hg3 Qf6 20.Nd6 cd6 21.Qg4 Kc7+-) 17.Bg3 g6 (17...c6 18.Qf3 Kc7 19.Ng7+-) 18.Qf3 c6 19.Nd6! Bd6 (19...Bd6 20.Qf7 Double attack) 20.Qf7 Kc8 21.Qe6 Kc7 22.Qe7 Qe7 23.Re7 Kb6 24.Bf2 Kb5 25.a4 Kb4 26.Rb7 Kc4 27.a5 g5 (27...Bb4 28.Rb4! Kb4 29.Bc6 Rhe8 30.Ra4) 28.Ra4 Bb4 29.Rbb4 1–0. pcmvr (2830) – valerypavlovich (2105), net–chess.com, 2014.

4.g3 h6 5.c4 a6 6.Nc3 c6 7.d4 ed4 8.Nd4 White launches an attack 8...Bg4 9.f3 Bh5 (better 9...Bc8!?+=) 10.Ne4+- Qd8 11.Nf5 f6? (11...d5 12.Ng7 Bg7 13.Bg7 Rh7+/-) 12.Ned6 Bd6 13.Nd6 Kf8 14.Nb7 Qd1 (14...Qe7 15.Qd8 Be8 16.Qe7 Ne7 17.e4+-) 15.Rd1 Ne7 (15...Ke7+-) 16.Rd8 Kf7 17.Rh8 g5 (17...Ng8 18.Nd8 Kf8 19.Ne6 Ke7 20.Ng7+-) 18.Rh7 Ke6 19.Bh3 f5 Black plans g4 20.Nc5 Kd6 21.Kf2 g4 22.Rd1 Kc7 23.Be5 Kb6 24.Na4 Kb7 25.Re7 Kc8 (25...Nd7 26.Red7 Kc8 27.Nb6) 26.Nb6 1-0. pcmvr – valerypavlovich, net-chess.com, 2020.

4.h3 Bd7 5.e3 Nc6 6.b5 Nd8 7.a4 c6 8.c4 a6 9.Nc3 Ne6 10.Be2 (10.d4 ed4 11.Nd4 Nc5+=) 10...ab5 11.ab5 Ra1 12.Qa1 cb5 13.Qa8 Nd8 14.cb5 (14.Nb5 Bb5 15.cb5 Qg6+/-) 14...Be7 (14...Qg6 15.g4=) 15.0-0 (15.d4!?+=) 15...Qg6= 16.Nd5 (16.Kh2 Nf6=) 16...Bh3+= 17.g3? (better is 17.Ne1+=) 17...Bf1–+ 18.Kf1?? (18.Bf1 Qb1 19.Nc7 Kd7 20.b6+=) 18...Qb1 19.Kg2 Qb2 20.Qc8 Qa2 (20...Nf6!? 21.Ne7 Ke7 22.Qc7 Nd7 23.Bc4–+) 21.Bc4 Qa5 22.Nc7 (22.b6 Nf6 23.Bb5 Kf8 24.Ne7 Qb6–+ (24...Qb5?! 25.Qd8 Qe8 26.Qe8 Ke8 27.Nf5–+; 24...Ke7?! 25.Qc7 Ke6 26.Qc8 Ke7 27.Qc7 Ke6 28.Qc8 Ke7=)) 22...Kf8 23.Nd5 Nf6 24.Ne7 Ke7 25.d4 Nd7 26.de5 de5 27.Bd3 h6 28.Nh4 Re8 29.Nf5–/+ Kf8 30.Qd7 Qa8?? 31.Be4?? Re6 32.Bd5+= Rf6?? 33.Qe7+- Kg8 34.Qe8 Kh7 35.Ne7 h5 36.Qg8 Kh6 37.Qh8 Kg5 38.Qg7 Rg6 39.Ng6 fg6 40.Qe5 Kh6 41.Qh8 Kg5 42.f4 Kg4 43.Bf3 Kf5 44.Qe5 1–0. Hal1958 – Nulnulnix, playchess.de, 2006.

4.h3 Be6 5.e4 =.

4.h3 h6 5.c4 b6 6.e3 Bd7 7.Be2 Ne7 8.0-0 +=. gtate (2020) – valerypavlovich (2110), net–chess.com, 2006.

5.d4 Nd7 6.e4 Ne7 7.b5 c5 8.de5 de5 9.a4 a5 10.Be2 b6 11.Nd5 Nd5 12.Qd5 (12.ed5?! Bd6=) 12...Rb8? (Better is 12...Ra7 13.Rd1 Qe7 14.Ne5 Ne5 15.Be5 Rd7+-) 13.Ne5 Qe6 14.Qe6 fe6 15.Bh5 g6 16.Nd7 (16...Kd7 17.Bh8 gh5 18.0-0-0 Ke8 19.Be5+-) 1–0. marekt – abbas_hassankhani, ChessWorld.net, 2003.

5.e4 b5 6.a4 Ba6 7.ab5+- cb5?? 8.Ra6! Na6 9.Bb5 Kd8 10.Ba6 Rb8 11.d4 d5 12.b5 Bb4 13.0-0 Bc3 14.Bc3 Ne7 15.de5 Qe6 16.ed5 Qd5 17.Qd5 Nd5 18.Rd1 Ke7 19.Rd5 Rhd8 20.Rd8 Rd8 21.Nd4 Ke8 22.Bb7 g6 23.Bc6 Kf8 24.Bb4 Kg8 25.Bc5 a5 26.ba6 Rb8 27.Bb7 Re8 28.a7 Re5 29.a8Q Kg7 30.Bf8 Kf6 31.Qd8 (31...Re7 32.Qe7#) 1–0. pierre – roo62, ChessWorld.net, 2005.

5.e4 Be6 6.h3 d5 7.ed5 cd5?? 8.Nb5 Na6 9.Be5 Qe7 10.Nd6 Kd7 11.c3 f6 12.Qa4 Kd8 13.Nb7!! Qb7 14.Ba6 Qe7 15.Qc6 Rb8 16.Nd4!! Bd7?? 17.Qc7 Ke8 18.Qb8 Kf7 19.f4!! fe5 20.fe5 Qh4 21.Kd1 Qh5 22.Kc2 Ba4 23.Kb2 Qg6 24.Rhf1 Ke7 25.Qf8 Kd7 26.Rf7 Qf7 27.Qf7 Ne7 28.Nf5 Re8 29.e6! Kc6 30.Qe8 Kb6 31.Qa4 Nf5 32.Qa5 Kc6 33.Qc5# 1–0. Trkn – Tim, itsyourturn.com, 2001.

5.e4 Bg4 6.Be2 Ne7 7.0-0 Ng6 8.Ne1 Be2 (8...Be6 9.Bg4=) 9.Qe2 h6 10.Nd3 Be7 (10...Qg5!?+=) 11.f4–/+ Nf4 12.Rf4! ef4 (12...Qf4 13.Nf4) 13.Nd5! Qb2? (13...cd5 14.Bf6) 14.Nb2+- cd5 15.Qb5 Nd7 16.Qd5 0-0 17.Qb7 Ne5 18.Qe7 Rae8 19.Qa7 Rc8 20.d4 Nc6 21.Qb6 Nd4 22.Qd4 Rc2 23.a4 Rfc8 24.a5 Re2 25.a6 Rcc2 26.a7 Rg2 27.Kf1 Rh2 28.a8Q Kh7 29.e5 Rh1 30.Qh1 1–0. themonkey (2155) – abcd123407040 (1640), GameColony.com, 2002.

5.e4 Bg4 6.Be2 h6 7.0-0 Nd7 8.Ne5 Ne5 (8...de5!? 9.Bg4 Bb4 10.Bd7 Kd7+/-) 9.Bg4 Ng4 10.Qg4 Ne7?? (Better is 10...Qe6 11.Qg3 Nf6+-) 11.Nb5! Qb2 (11...cb5 12.Bf6) 12.Nd6 Kd8 13.Nf7 Ke8 14.Nh8 Qc2 15.Qe6 Qd2 16.Rad1 Qb4 17.Qd7# 1–0. b4_player (2225) – Jhonny (1620), GameColony.com, 2003.

5.e4 Bg4 6.Be2 Nh6 7.h3 Bf3= 8.Bf3 Be7 9.Ne2 0-0 10.d4 Na6 11.a3+= Nc7 12.Qd3 Ne6 13.Rd1 Nf4 14.Nf4+/- Qf4 15.de5 de5 16.Qd7 Qf6 17.Qb7 Rfb8 18.Qc7+- a5 19.Be5 Qe6 20.Bd6 Bd6 21.Rd6 Qe8 22.Qc6 Qf8 23.b5 Rc8 24.Qd5 Rc2 25.0-0 Rcc8 26.Rd1 g6 27.b6 Rcb8 28.g4 Kg7 29.b7 Ra7 30.Qd4 f6 31.Qa7 Nf7 32.Rd8! Nd8 33.Qb8 Nb7 34.Rd7 Kg8 35.Qb7 Qa3 36.Qd5 Kh8 37.Qa8 (37...Qf8 38.Qf8#) 1–0. pierre – jokati, ChessWorld.net, 2005.

5.e4 Bg4 6.h3 Bf3 7.Qf3 Qf3 8.gf3 Nf6 9.Rg1 a6 10.Rd1 Be7 11.Rg7 Nh5 12.Rg1 Nd7 13.d4 0-0-0 14.d5 c5 15.b5 a5 16.Bc1 Rhg8 17.Rg4 Nhf6 18.Rg3 Rg6 19.f4 Nh5 20.Rg6 hg6 21.fe5 Ne5 22.Be2 b6 23.Be3 Kc7 24.f4 Nd7 25.Kd2 Bf6 26.Rg1 Rh8 27.Bg4 Bc3 28.Kc3 Nhf6 29.Kd3 Re8 30.Bf3 Rh8 31.Rg3 Nh5 32.Rg5 Ng7 33.Bg2 Rh4 34.c3 Nh5 35.Rg4 Rg4 36.hg4 Ng7 37.g5 f5 38.gf6 Nf6 39.Bf3 Nfh5 40.Kc4 Ne8 41.e5 Ng3 42.e6 Nf6 43.a4 Nf1 44.Bc1 Nh2 45.Be2 Nhg4 46.Bg4 Ng4 47.Kd3 Nf2 48.Ke3 Nd1 49.Kd2 Nf2 50.Ke2 Ne4 51.Bd2 Kd8 52.Ke3 Nf6 53.c4 Ke7 54.Kf3 Nh5 55.Bc3 Kf8 1–0. marekt – zuertez48, gameknot.com, 2001.

5.Ne4 Qd8 6.e3 Bg4 7.Be2 g6 (7...d5 8.Nc5 b6 9.Nb3=) 8.d4 (Better is 8.0-0+=) 8...Bg7?? (8...d5 9.Nc5 b6 10.Ne5 Be2 11.Qe2 bc5 12.dc5 Nf6=+) 9.de5+- Bf3 10.Bf3 d5 11.Nd6 (11…Kf8 12.Qd4+-) 1–0. Hyperboleweevil (1900) – guest547, ICC, 2003.

5.g3 b5 6.Bg2 Bb7 7.0-0 Nd7 8.Ne4 Qd8 9.d4 a5 10.a3 ab4 11.ab4 Ngf6 12.Nf6+/- gf6 13.de5 fe5 14.Nd2 d5 15.Nb3 Bb4–/+ 16.e3 f5?? 17.Qh5+- Kf8 18.Qf5 Qf6?? 19.Ra8 Ba8 20.Qd7 Rg8 21.Ra1 Be7 22.Ra8 Kf7 23.Rg8 Kg8 24.f4 d4 25.fe5 Qe5 26.Bd4 (26...Qh5 27.Qe7+-) 1–0. boa – breaker, ChessWorld.net, 2004.

5.g3 d5 6.e4 =+.

6.b5 =.

6.Bc4 Nd7 7.Be2 h6 (7...Qg6 8.0-0=) 8.0-0 Nb6 9.d4 Qg6 (9...Be6 10.d5 cd5 11.Nd5 Bd5 12.ed5+=) 10.Kh1 (10.de5 de5 11.Ne5 Qd6–/+) 10...ed4 11.Nd4 d5 (Better is 11...Nf6!?+=) 12.ed5–/+ cd5 (12...Bb4 13.dc6 Ne7 14.Bh5+-) 13.Ndb5+- Bd6?? (Better is 13...Bd8 14.Nd5 Nd5 15.Qd5 Ne7 16.Nd6 Kf8+-) 14.Nd5 Nd5 15.Qd5 a6 (15...Bf4 16.Rfe1 Ne7+-) 16.Nd6 Kf8 17.Nf7! Qf7 18.Qd8 Qe8 19.Bg7! Kg7 20.Qe8 Kf6 21.Qf8 Ke6 22.Bg4 Ke5 23.Rae1 Kd4 24.Qc5# 1–0. fajgo – seprocank9, internet, 2002.

6.Bc4 Bd8 7.b5 Be6 (7...Qg6 8.0-0=) 8.Be6+= Qe6 9.d4 Nd7 10.0-0 Ne7 11.bc6 bc6 12.Rb1 0-0 13.de5 (13.Ba3 Ba5 14.Qd3 ed4 15.Nd4 Qg6+=) 13...Ne5= (Worse is13...de5 14.Ng5 Qf6 15.Qd7 Qg5 16.Ba3+-) 14.Ne5 Qe5 (14...de5 15.Ba3=) 15.Qd3+= Qe6 16.Rfd1 Bc7 17.Qg3 Rac8 18.Nd5! f6 19.Nc7 Rc7 20.Qd6 Qd6 21.Rd6 Kf7 22.Ba3 Nc8 23.Rd3 Re8 24.f3 Nb6 25.Bc5+- Nc4 26.Rd4 Ne5 27.Bd6 Rd7?? 28.Be5 Rd4 29.Bd4 Rd8 30.Ba7 Rd2 31.Rb2 Rd1 32.Kf2 Rd2 33.Kg3 Rd1 34.Rb7 Kg6 35.Bc5 1–0. raddykko – kobaad, GameColony.com, 2002.

6.h3 Be6 7.d4 Nd7 8.d5 cd5 9.Nd5 Bd5 10.Qd5 Nb6 11.Bb5 Kf8 12.Qb7 Bd8 13.Qc6 Qe7 14.0-0-0 Rc8 15.Qd6 Qd6 16.Rd6 f6 17.Ba6 Nc4 18.Rd5 Rb8 19.Bc4 Ne7 20.Rd7 Bb6 21.Rhd1 Nc6 22.b5 Nb4 23.Ne5 fe5 24.Be5 1–0. mtra – Romulans, internet, 2002.

6.h3 Qg6 7.d4 Nf6 8.Qd3 0-0 9.de5+= de5 10.Ne5 Qh5 11.Qg3 Bb4 12.Be2 Qh6 13.Bf3 Nbd7 14.Nd3+= Bc3 15.Bc3 b5 16.a4 Ba6 17.Bd2 Qg6 18.Qg6 fg6 19.e5 ba4? 20.ef6+- Rf6 21.Be3 Bd3 22.cd3 Ne5 23.Be4 Rd8 24.Ke2 Rfd6 25.Rhd1 Rb8 26.Ra4 Rb2 27.Rd2 Rd2 28.Bd2 c5 29.Bf4 Re6 30.Bd5 Kf7 31.Be5 Ke7 32.Ra7 Kd8 33.Be6 c4 34.Bd6 h5 35.Ra8# 1–0. orane3 – dllscwbysfn, internet, 2006.

5.b5 Na5 6.e3 Be6 7.Ne4 Qg6 8.Bd3 Qg2 9.Rg1 Qh3 10.Neg5 Qh5 11.Bc3+= Nc4?? 12.Ne6+- Nd2 13.Nc7 Kd8 14.Bd2 Kc7 15.Ba5 b6 16.Be4 Rc8 17.Bc3 Nf6 18.Rg5 Qh3 19.Bf5 Qh4 20.Nh4 (20...Re8 21.Qf3+-) 1–0. pierre – nn6611, internet, 2008.

5.b5 Nd4 6.Nd4+/- ed4 7.Nd5 Qd8 8.Bd4 Be6 9.e4 c6 10.Qe2 cd5 11.ed5 Nf6 12.de6 fe6 13.Qe6 Qe7 14.Qe7 Be7 15.a4 0-0 16.a5 Nd5?? 17.Bc4 Rf5 18.g4 Rg5 19.f4 Rg4 20.Bd5 Kh8 21.Bb7 Rb8 22.a6 Bh4 23.Kd1 Rf4 24.Ba7 Rbf8 25.Be3 Re4 26.Be4 (26…Bf6 27.c3+-) 1–0. Trkn – guest6452, ICC, 2004.

5.b5 Nce7 6.d4 ed4 7.Qd4 Qg6 8.e4 Nf6 9.Qc4 +=.

5.b5 Nce7 6.e4 Qe6 7.d4 ed4 8.Qd4 Nf6 9.Bc4 Qd7 10.e5 de5 11.Bf7!+- Kf7?? 12.Ne5 Ke8 13.Nd7 Bd7 14.0-0-0 b6 15.Ne4 Ne4 16.Qd7 Kf7 17.Rhe1 Nc5 18.Re7! Be7 19.Qd5 Ne6 20.Qf5 Bf6 21.Rd7 Kf8 22.Qe6 Bb2 23.Kb2 (23...a6 24.Qf7#) 1–0. guest3315 – guest2261, ICC, 2006.

5.b5 Nce7 6.e4 Bg4 7.Be2 0-0-0 8.0-0 Nh6 9.d4.

5.Nd5 Qd8 6.e4 Nge7 7.Ne7 Be7 8.b5 Nb8 9.d4 +=.

5.Ng1 d5 6.Nd5 Qd6 7.c4 Be6 8.Qc2 Nc6 9.Qe4+/- 0-0-0 10.b5 Nb4 11.Nf3 Bd5 12.cd5+- Nd5 13.Qf5 Kb8 14.e4 Nde7? 15.Qf7+- Nh6 16.Qc4 a5? 17.ba6 b6 18.Rc1 Rc8 19.h3 Ng6 20.e5 Qd7 21.Qe4 Bc5 22.Qb7# 1–0. pierre – amit_mak07, internet, 2008.

5.Ng1 Be6 6.Nb5 A) 6...Qd8 7.e3 Nc6 8.a3 a6 9.Nc3= Nf6 10.Nge2 d5=; B) 6...Qe7 7.Nd4 Nf6 8.e3 Bd7 9.a3 a6 10.d3 c5=.

5.Ng1 Be6 6.Nd5 Qd8 7.Nf4 Bf5 8.e3 Nc6 9.Bb5= Bd7 10.a3 a6 =.

5.Ng1 Be6 6.e3 A) 6...a5 A1) 7.b5 Nh6 8.Nge2 Nd7 9.Rb1 Qe7 10.Nf4 Nf6+=; A2) 7.a3 Nh6 8.Nge2 Qh4 9.Nf4 Bg4 10.Be2 Bf5+=; B) 6...Nc6 7.b5 Nb8 8.Nge2 Nd7 9.Nd4 d5 10.Be2 0-0-0=; C) 6...Nd7 7.Nge2 0-0-0 8.Nd4 Qg6 9.Nce2+= Bg4 10.f3 ef3=; D) 6...Nh6 7.Nge2 Nc6 8.Nd5 Qb2 9.Nc7 Kd7 10.Na8 Be7=+.

6.e3 c6 A) 7.b5 d5 8.Rb1 Nf6 9.bc6 Nc6 10.Nb5 Qe7=; B) 7.a3 d5 8.Nge2 Nf6 9.Nd4 Qd7 10.Be2 Bd6=; C) 7.Nge2 d5 8.a3 Nf6 9.Nf4 Qd7 10.d3 Bd6=; D) 7.d3 ed3 8.Qd3 d5 9.a3 Nf6 10.Nf3 Bd6=.

6.e3 Nc6 7.b5 Nce7 8.Nge2 Nf6 9.Nd4 Qg4 10.Qg4 Bg4 =.

6.e3 d5 A) 7.Nh3 c6 8.Nf4 Qh6 9.d3 ed3 10.Nd3 Nf6=; B) 7.Nge2 Qd7 8.Nf4 Nf6 9.a3 c6 10.d3 Bd6=.

6.e3 Ne7 A) 7.a3 d5 8.d3 a5 9.de4 de4 10.b5 Nd7+=; B) 7.Nge2 a5 8.b5 a4 9.b6 c6 10.Nf4 Qf5+=.

6.e3 Nf6 A) 7.Nb5 Qd7 8.Bf6 gf6 9.c4 Nc6 10.Nc3 f5=; B) 7.Nh3 Qd7 8.a3 d5 9.Nf4 c6 10.Nce2 Be7=+; C) 7.Nge2 C1) 7...d5 C11) 8.a3 Qd7 9.Nf4 c6 10.d3 Bd6=; C12) 8.Nf4 Qd7 9.a3 a5 10.Nh5 Nh5=; C2) 7...Qg4 8.Nf4 c6 9.d3 ed3 10.Bd3 d5=; C3) 7...Be7 8.Nf4 Qf5 9.d3 0-0 10.de4 Qg5+/-; C4) 7...Qd7 8.a3 d5 9.Nf4 c6 10.d3 Bd6=; D) 7.a3 Be7 8.Nge2 d5 9.Nf4 Qd7 10.d3 0-0=.

5.d4 Nc6? 6.d5+- e4 7.Nd2 (7.dc6?! ef3 8.cb7 Rb8+/-) 7...Bd5? (7...e3 8.Nde4 Qe5 9.de6 fe6+-) 8.Nd5 Qb2 9.Rb1 (< 9.Nc7 Kd8 10.Na8 Nb4+-) 9...Qc3 (9...Qe5 10.Nc7 Kd7 11.Na8 e3 12.fe3 Qe8+-) 10.Nc3 (10...e3 11.fe3+-) 1–0. kamret (2255) – pb3203 (1755), GameColony.com, 2003.

5.d4 ed4 6.Nd4 c6 7.e3 Be7 8.Ne4 Qg6 9.Ne6 Qe6 10.Bg7 Bf6 11.Nf6 Nf6 12.Bh8 Nbd7 13.Qd4 0-0-0 14.Bf6 Nf6 15.Qa7 Qe5 16.Qd4 Qe6 17.a4 Kd7 18.Qa7 Ke8 19.Qb7 Qe5 20.Qc6 Nd7 21.Rd1 Ke7 1–0. marekt – NN, GameColony.com, 2002.

5.d4 Nd7 +=.

5.e4 a6 6.d4+= Bg4 7.de5+- de5 8.Nd5 Qd6 9.Be5 Qc6 10.b5 Qg6 11.Nc7 Ke7 12.Qd4 Bf3 13.gf3 Nd7 14.Rd1 Rd8 15.Bd6 (15...Qd6 16.Qd6) 1–0. pcmvr (2110) – rodnel, net–chess.com, 2006.

5.e4 Nc6 6.Bb5 =.

5.d4 c6 =.

5.Nd5 Qd8 6.e4 Ne7 (6...Nf6 7.h3 Nd5 8.ed5=) 7.Ne7 (7.Ne3 Bh5+=) 7...Qe7 8.Ne5?? (better 8.Bb5 Nd7 9.0-0=) 8...Bd1-+ 9.Nd7 (9.Rd1 de5 10.a3 a5-+) 9...Nd7 (better 9...Bc2 10.Nf6 gf6 11.f3-+) 10.Rd1 (10.Kd1 Qe4 11.a3 0-0-0-+) 10…0-0-0. opperwezen (2695) - Safely (1785), Hourly Crazyhouse Arena, lichess.org, 2017.

5.e4 c6 6.Be2 Be7 7.h3 Be6 8.d4 ed4 9.Nd4+= d5 10.ed5+/- Bd5 11.0-0 Qg6 12.Nd5+- cd5 13.Nb5 Na6 14.Bh5 Qb6 15.Qd5 g6 16.Bf3 Nf6 17.Qb7 Qb7 18.Bb7 Rb8 19.Ba6 Bb4 20.Bf6 0-0 21.Bd4 Rbd8 22.Rfd1 Rd7 23.Ba7 Re7 24.Rab1 Ba5 25.Bc5 Rb7 26.Bb7 Rb8 27.Nd6 Bc7 28.Nf7! Kf7 29.Bd5 Kg7 30.Rb8 Bb8 31.Rb1 Be5 32.Rb7 Kh6 33.Be3 g5 34.Be4 Bf6 35.Rh7# 1–0. b4_player – LIMBO, gamecolony.com, 2006.

5.e4 Nd7 6.Nd5 Qd8 7.Ne3 Bf3 8.Qf3 Nb6 9.d4 c6 10.de5 Na4 11.Bc4 d5 12.0-0-0 Bb4? (12...b5 13.Bb3 Nb2 14.Kb2 Qc7 15.ed5 Qe5 16.c3 Nf6+-) 13.ed5+- Nb2 14.dc6 Qb6 (14...Qe7 15.cb7 Rb8 16.Qc6 Kf8 17.Qc8 Qe8 18.Qe8 Ke8 19.Bb5 Ke7 20.Nf5 Ke6 21.Nd4 Kd5 22.Kb2 Kc5+-) 15.Qf7 1–0. Stek – Albrecht, internet, 1998.

5.e4 Bf3 6.Qf3 Qf3 7.gf3 Nf6 8.Bc4 c6 9.Ke2 b5 10.Bb3 a5 11.ba5 Ra5 12.a4 b4 13.Na2 c5 14.c4 Be7 15.Nc1 0-0 16.Kd3 Nc6 17.Ne2 Ra6 18.Rhg1 Na5 19.Kc2 Nh5 20.Ng3 Nf4 21.Nf5 Bf6 22.Nh6 Kh8 23.Ng4 Bh4 24.d3 Nb3 25.Kb3 Nd3 0–1. Trkn – H.K., itsyourturn.com, 2000.

5.h3 Bf3 6.ef3 Nc6 7.Nd5 Qd8 8.Bc4 Nf6 9.0-0 Rb8 10.a3 Nd5 11.Bd5 Ne7 12.Bb3 g6 13.f4 Bg7 14.fe5 de5 15.f4 Nc6 16.fe5 0-0 17.d4 Qe7 18.Qf3 Nd8 19.Qe3 Ne6 20.d5 Ng5 21.Bd4 Bh6 22.Bc5 Qd7 23.Bf8 Rf8 24.c4 b6 25.Rf6 Kg7 26.Raf1 c5 27.Bc2 Ne6 28.Qd3 Nd4 29.e6 Qd6 30.Rf7 Rf7 31.Rf7 Kg8 32.Ra7 Qe5 33.Qe4 Ne2 34.Kf2 Qe4 35.Be4 Nc3 36.Kf3 Kf8 37.Rh7 Bg5 38.d6 cb4 39.Bg6 ba3 40.e7 Be7 41.de7 1–0. themonkey – NN, GameColony.com, 2002.

5.Qa4 c6 (5...Bd7 6.Qb3 Qg6 7.Nc3 Nf6 8.Nd5 Nd5 9.cd5=; 5...Nd7 6.d4 e4 7.Nfd2 d5 8.Qb5 c6 9.Qb7+=) 6.e3 Nd7 7.Nc3 Bg4 8.Ne4 Qg6 9.d3 =+.

5.d3 Nc6 6.Nc3 a6 7.e3 Qd8 8.d4 ed4 9.ed4 =.

5.e3 Nc6 6.Qa4 Bd7 7.b5 Nce7 8.Bd3 Qe6 9.Nc3 =.

5.e3 Nd7 6.Nc3 0-0-0 7.Nd5 (7.Bd3!?+/-) 7...Bd5 (7...Qg6 8.Nh4 Qh6 9.Nf3=) 8.cd5+= Ne7 (8...Qg6 9.h4 Ngf6 10.Rc1=) 9.Qb3 (9.Bc4 Nb6 10.Qb3 g5+=) 9...Nb6 (9...Qg6 10.h4+=) 10.e4 Qg6 11.d3 f5 12.Nd2 Kb8 13.a4 Qf7 (13...Nd7!?+=) 14.a5+- Nbc8 (better 14...Nd7!?+-) 15.b5 g6 16.f3 Bh6 17.b6?? (better 17.Nc4 Qf6 18.g3+-) 17...Bd2= (worse 17...ab6 18.Nc4 ba5 19.Ra5+/-) 18.Kd2 ab6 (18...cb6 19.ab6 Nb6 20.Qa3=) 19.Qa4 (19.a6 c5+/-) 19...ba5 (19...c5 20.Ke1+=) 20.Qa5 Nb6 21.Be2 (better 21.Qa7 Kc8 22.Rc1 Nbd5 23.ed5 Qd5 24.d4+/-) 21...Kc8? (better 21...Nec8+=) 22.Rhc1+- Kd7?? (better 22...fe4 23.de4 Nbd5+-) 23.Qb5 c6 24.dc6 (24.Qb6 Rb8 25.Ra7 Rhc8 26.Rb7 Rb7 27.Qb7 Rc7+-) 24...bc6 (24...Nc6 25.Qb6 Ke8 26.Ke1+-) 25.Qb6 (better 25.Ra7 Ke8 26.Rc6 Nc6 27.Rf7 Kf7 28.Qc6 Nc8 29.Qc4 Kf6+-) 25...Rb8 26.Ra7 Ke6 27.Rb7 Rb7 28.Qb7 Rd8 29.Qb3 d5 (29...Kf6 30.Qb6 Qe8 31.Rb1+-) 30.Ba3 (better 30.ed5 Rd5 31.f4+-) 30...Rc8 (30...Kf6 31.ef5 Kf5+-) 31.Be7 (better 31.Qb7 Qe8 32.Be7+-) 31...Ke7 (31...Qe7 32.ed5 Kd6 33.Qb4 Kd7 34.dc6 Ke8 35.Rc5+-) 32.ed5 (better 32.Qb7 Kf6 33.Qc8 de4 34.Rc6 Kg7 35.Rc7+-) 32...Qf6 (32...Kf6 33.Qc4+-) 33.dc6 Qg5 (33...Qd6+-) 34.Ke1 (better 34.Kd1 Kd6 35.d4+-) 34...Qc1-+ 35.Kf2 Qc5 (35...Qc6 36.g3-+) 36.Kg3 (36.d4 Qd4 37.Kg3 f4 38.Kh4 Qd6-+) 36...Qc6 37.d4 (37.Qb4 Kf7 38.f4-+) 37...ed4 38.Qa3 (38.Qb2 Qc2 39.Qb5-+) 38...Qd6 39.Qd6 Kd6 40.Kf4 (40.Kf2 Ra8-+) 40...Rc2 41.Bd3 (41.Bf1 Rf2 42.Bc4 Rg2-+) 41...Rg2 42.h4 (42.Bf1 Rh2 43.Bd3 Kc5-+) 42...Rh2 (42...Ke6 43.Bf1 Rg1 44.Bc4 Kf6 45.Bf7 Kf7 46.Ke5 d3 47.Kd6 d2 48.h5 d1Q 49.Kc5 Qc2 50.Kb4 Rb1 51.Ka5 Qa2) 43.Kg5 (43.Kg3 Rd2 44.Bc4 Ke5-+) 43...Rh3 44.Be2 Kc5 45.h5 (45.Ba6 Rf3 46.h5 gh5-+) 45...Rh5 46.Kf6 Rh2 47.Bd1 Rd2 (47...Rd2 48.Ba4 Kb4-+) 0-1. carlos78 (2250) - Le_Truand (2365), Rated Blitz game, lichess.org, 2015.

5.e4 Qg6 (5...Qf4 6.Nc3 Nf6 7.d3 Be7 8.h3 Qh6 9.Bc1+=) 6.Nc3 Nf6 7.Qe2 Nc6 8.b5 Ne7 9.d4 =.

5.Nc3 c6 6.b5 c5 (6...Nd7 7.d4=) 7.g3 Bf3 (7...Ne7 8.Bg2 a6 9.Qb3+=) 8.ef3 Nd7 9.Bg2 (9.Nd5 Qd8+=) 9...Nb6 10.d3 (10.Qe2 0-0-0+=) 10...Nh6 (10...0-0-0 11.0-0=) 11.f4+= ef4 (11...0-0-0 12.Qf3 Qe7 13.0-0+-) 12.0-0 (12.Bb7 Qe7 13.Qe2 Rb8 14.Bc6 Kd8+-) 12...0-0-0 (12...d5 13.Re1 Kd8 14.Qe2 (14.cd5?! fg3 15.hg3 Nf5+=; 14.Bd5?! Nd5 15.cd5 fg3 16.fg3 Bd6=) 14...fg3 15.hg3+- (15.Nd5?! gf2 16.Qf2 Qf2 17.Kf2 Nd5 18.Bd5 Kc7=)) 13.a4 (13.Qf3 Rd7 14.Bh3 (14.gf4?! d5+=) 14...fg3 15.Qf6 gh2 16.Kh2 gf6 17.Ne4+-) 13...Qe7? (better 13...d5 14.a5 Nd7+-) 14.a5+- (14.gf4 d5 15.a5 Nd7 16.Nd5 Qd6+-) 14...Nd7 15.Nd5 (better 15.Re1 Ne5 16.gf4+-) 15...Qe6?? (15...Qg5 16.a6 b6+-) 16.Qf3 (16.Nf4?! Qg4+-) 16...Nf5 (16...Kb8 17.Nf4 d5 18.Ne6 fe6 19.cd5 Nf5 20.de6 Nd6+-) 17.Nb6!! Nb6 (17...ab6 18.Qb7; 17...Nb6 18.Qb7) 18.Qb7 1–0. michaelbuss (2795) – Ronan mac, ChessWorld.net, 2011.

5.Nc3 c6 6.d4 Nd7 7.d5 Bf3 (7...Be7 8.dc6 bc6 9.Qa4+=) 8.ef3+= Qd8 (8...Qg6 9.a3+=) 9.Bd3 Ngf6 (9...Qb6 10.a3+=) 10.0-0 Be7 11.dc6 (11.Re1 0-0+=) 11...bc6 12.Qa4 (12.f4 ef4 13.Bc1 d5 14.cd5 cd5+=) 12...Qc7 13.Rad1 (13.Rfd1 0-0+=) 13...0-0 14.Ne4 Nb6 (14...Nh5 15.Rfe1=) 15.Qa5 Ne4 (15...Rfc8 16.Rfe1+=) 16.fe4 Bd8 (16...c5 17.b5+=) 17.f4 (17.c5 dc5 18.Qc5 Re8+/-) 17...Qe7 (17...Qb7 18.Qa3 (18.fe5 Nc4 19.Qd8 Rad8 20.Bc4 Qb6 21.Kh1 Qb4–+) 18...Nd7 19.b5 Bb6 20.Kh1+=) 18.Qa6 (18.fe5 Nc4 19.ed6 Qb7–+ (19...Na5? 20.de7 Be7 21.ba5+-)) 18...f6 (18...ef4 19.Rf4 Rb8 20.b5+/-) 19.Rc1 c5 20.fe5 (20.a3 ef4 21.Rf4 Rb8+/-) 20...de5+= 21.b5 Bc7 22.Rfd1 Nd7 23.Qc6 Bb6 24.Be2+/- Rad8 25.Bg4 Nb8 26.Qe6 Qe6 27.Be6 Kh8 28.Kf2 Rfe8 29.Bg4 Rd1 30.Rd1 Rd8 31.Rd5 Rd5 32.ed5 a6 33.a4+- ab5 34.ab5 Kg8 35.h4 Kf8 36.d6 Ke8 37.Ke3 Nd7 38.Ke4 g6 39.Be6 Ba7 40.Kd5 Nf8 41.Bc1 Ne6 42.Ke6 e4 43.d7 Kd8 44.Bb2 Bb6 45.Bf6+- Kc7 46.d8Q (46...Kb7 47.Qd7 Kb8 48.Be5 Ka8 49.Qc8 Ka7 50.Qa6) 1–0. Machete (2315) – hawkeye17 (2005), ICC, 2003.

5.Nc3 Ne7 6.d4 Na6 7.b5 ed4 8.Nd5 (8.ba6 dc3 9.ab7 Rb8 10.Qa4 Kd8–+; 8.Qd4?! Qd4 9.Nd4 Nc5=; 8.Nd4?! Nc5=) 8...Nd5 9.Bd4 +=.

5.d3 Nc6 6.a3 =+.

5.d3 Nd7 6.Nc3= Ne7 7.Nb5 0-0-0 (7...Kd8 8.h3 Bf3 9.ef3=) 8.Na7+= Kb8 9.Nb5 (9.Qa4 Nb6 10.Qa5 Re8+/-) 9...c6 (9...d5 10.Qa4 Nc6 11.a3+= (< 11.cd5 Nb6 12.Qb3 Rd5=+)) 10.Na3 d5 11.Qb3 (11.b5 Bf3 12.ef3 d4+/-) 11...Be6 (11...d4 12.Qa4+=) 12.b5 d4 (12...c5 13.cd5 Bd5 14.Nc4+/-) 13.h3 (13.bc6 Nc6 14.Nc2 Nc5+=) 13...Nc5 14.Qc2 (14.Qb4 Nd7+/-) 14...g6 (14...Rc8 15.bc6 Nc6 16.Rb1+/-) 15.Bc1 (15.Rb1 Rg8+/-) 15...h6 (15...h5 16.Bg5 Qg7 17.bc6+/-) 16.Rb1 Rc8 (16...g5 17.bc6 Nc6 18.Nb5+/-) 17.g3 (17.bc6 Nc6 18.e3 Bd6+/-) 17...cb5 (better is 17...g5+/-) 18.Ne5 g5?? (18...Qe5 19.Bf4) 19.Ng4+- Bg4 20.hg4 bc4 21.Nc4 (21...Nc6 22.Bg2+-) 1–0. Bonetti,Shane (2105) – Valica,Slavo (1630), TT–16 ETC, 2005.

5.e3 Nc6 6.b5 Nce7 7.Be2 =.

5.e3 Qe6 6.h3 Bh5 7.Ng5 (7.d4 e4 8.d5 Qd7+=) 7...Qg6 8.Nf3 e4 9.Nh4 (9.Qa4 c6 10.Nd4 Qg5=) 9...Qg5=+ 10.g4 Qh4 11.gh5 Be7?? (better is 11...Nc6!?=+) 12.Qg4 (better is 12.Bg7 Bf6 13.Bh8 Bh8 14.Nc3+-) 12...Qg4=+ 13.hg4 Bf6 14.Bf6 Nf6 (14...gf6? 15.Bg2 f5 16.gf5+-) 15.g5 Ng4 16.Bg2 Ne5 (16...f5!? 17.d3 d5 18.cd5 ed3+=) 17.Be4+- c6 (17...Na6 18.h6 gh6 19.Bb7 (< 19.gh6 Nb4 20.Na3 c6+/-) 19...Nb4 20.Ba8 Nc2 21.Ke2 Na1 22.Na3 hg5 23.Ra1+-) 18.d3 Na6 19.a3 0-0-0 20.f4 Nd7 21.Bf5 g6 22.Bg4 Kb8 23.Nd2 f5 24.Bf3 Nc7 25.Kf2 Ne8? 26.e4 fe4 27.de4 Ng7 28.Bg4 Nf8 29.Nf3 Nge6? 30.hg6 Nf4 31.g7 Rg8 32.gf8Q Rdf8 33.Bf5 Nd3 34.Ke3 Nb2 35.Be6 Rg6 36.Bf5 Rg7?? 37.Kd4+- Na4 38.Raf1 c5 39.Kd5 cb4 40.ab4 Nc3 41.Kd6 Ne2 42.Rh7 Rd8 43.Ke5 Re8 44.Kf6 Rgg8 45.Ne5 Ng3 46.Rf3 Rgf8 47.Rf7 Nh5 48.Kg6 Rf7 49.Nf7 1–0. mtr – HanSolo, Caissa's Web, 2001.

5.e3 Bf3 6.Qf3 Qf3 7.gf3 Be7 8.f4 Bf6 (8...Nc6 9.Bg2 Nb4 10.Ke2=) 9.fe5+= Be5 (9...de5 10.Nc3 Na6 11.a3+/-) 10.d4+/- Bf6 11.Bg2 c6 12.b5 a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 cb5 (15...Ke7 16.Nc3+/-) 16.cb5+- (16.Bb7?! bc4 17.Ke2 Ne7+=) 16...b6 17.0-0 Ne7 18.Nc3 0-0 19.Nd5 Nd5+/- 20.Bd5 Rc8 21.Bb3 Nd7 22.Bb2 Bh4 23.Rc1 Rc1+= 24.Bc1 Nf6 25.Kg2 Ne4 26.f3 Nc3+= 27.Bc4 h5 28.e4 g5 29.Ba3 g4? 30.Bd6+- gf3 31.Kf3 Kg7 32.Be5 Bf6 33.Bf6 Kf6 34.Kf4 Nd1 35.e5 Ke7 36.Kg5 Ne3 37.Bd3 Ke6 38.Be4 Ng4?? 39.Bf5 Kd5 40.Bg4 hg4 41.Kg4 Kd4 42.Kf5 Kc5 43.h4 1–0. Trkn – rccpe, itsyourturn.com, 2000.

5.e3 Bf3 6.Qf3 Qf3 7.gf3 Nf6 8.Be2 Be7 9.a3 0-0 10.Rg1 b6 11.Nc3 c5 12.b5 a6 13.a4 Nbd7 14.Nd5 ab5?? (better is 14...Nd5 15.cd5 a5+=) 15.Ne7+- Kh8 16.ab5 Ra1 17.Ba1 Ra8 18.Kf1 (better is 18.Bc3+-) 18...Ra1= 19.Kg2 Rg1 (19...Ra2!?=) 20.Kg1+= g6 21.Nc8 1–0. Fournier,Frederic – vago11, Active, 2007.

5.e3 Qf5 6.Be2 Nf6 7.Qb3 (7.Nc3 Be7+/-) 7...Nbd7 8.0-0 (8.Nc3 Qg6+=) 8...Ne4 (8...a5 9.ba5 Be7 10.Nc3+= (worse is 10.Qb7 Rb8 11.Qc7 Rb2–/+)) 9.d4 (9.d3 Ng5 10.Nh4 Qe6+/-) 9...0-0-0 10.Re1 (10.h3 Bf3 11.Bf3 Ndf6+=) 10...f6 (10...g5+=) 11.Nc3 (better is 11.Nbd2+/-) 11...Bf3+= 12.Bf3 (12.gf3?? Qg5 13.Kh1 Nf2) 12...Nd2 13.Bb7? (better is 13.Qd1 Nf3 14.gf3+=) 13...Kb7–+ 14.Qa4 (14.Qd1 Nc4 15.e4 Nb2–+) 14...Nc4 (better is 14...Nb6 15.Qd1 Ndc4–+ (15...Nbc4 16.e4 Qf4 17.Nd5–/+)) 15.Qb5 (15.e4 Qg4 16.d5–+) 15...Ndb6 16.e4 Qd7 (better is 16...Qc8 17.d5 Nb2–+) 17.Bc1 (17.Qd7 Rd7 18.Nd1 d5 19.de5 fe5 20.ed5 Bb4–+) 17...ed4 (better is 17...c6 18.Qc4 Nc4–+) 18.Qd7 Rd7 19.Nb5 (19.Nd5 Nd5 20.ed5 Re7 21.Re7 Be7–+) 19...d3 (19...d5 20.a3 d3 21.e5 fe5 22.Nc3–+) 20.Be3 (20.Rd1 d5 21.Rd3 c6–+) 20...d5 21.ed5 Rd5 (better is 21...Bb4 22.Reb1 Ne3 23.fe3–+) 22.Nd4 (22.Nc3 d2 23.Red1 Rd3–+) 22...Ne3 (better is 22...Bb4 23.Red1 Bc3 24.Rab1 Bd4 25.Rd3–+) 23.fe3 d2 (better is 23...Bb4 24.Red1 d2 25.Rab1–+) 24.Re2 (24.Reb1 c5 25.bc5 Bc5–+) 24...Bb4 25.Rd1 Re8 26.Kf2 (26.Nb3 Nc4 27.e4 Rd3–+) 26...c5 27.Nc2 (27.Nf3 c4 28.Rdd2 Bd2 29.Nd2 c3–+) 27...Nc4 28.a3 (28.Nb4 Rf5 29.Kg1 Re3 30.Red2 Nd2–+) 28...Ba5 (28...Nb2!? 29.Rb1 d1Q 30.Rd1 Nd1 31.Kf1–+) 29.e4 Nb2 (29...Nb2 30.Rb1 d1Q 31.Rb2 Kc7–+) 0–1. guy500 (1665) – ovid7 (1670), gameknot.com, 2013.

5.e3 g6 6.Be2+= Bg7 7.h3 Be6 8.d4 Ne7? (8...Qe7 9.Nc3+=) 9.d5 (better 9.de5!? Qf5 10.Nd4 Qe5 11.Ne6 Qb2 12.Nc7 Kd7 13.Na8 Qa1 14.b5+=) 9...Bf5 (9...Bc8 10.Nc3+=) 10.0-0 (10.Nc3 g5+/-) 10...g5+= 11.Nbd2 (11.Nfd2 a5 12.e4 Bd7 13.ba5 Ra5+=) 11...Qg6 (11...g4 12.hg4 Bg4 13.Qa4 Bd7 14.Qa5=) 12.Qa4 (12.e4 Bd7+=) 12...c6 (12...Bd7!? 13.Qa5 b6+=) 13.dc6+= Nbc6 14.b5 Nd8 15.b6 (15.c5 Bc2 16.Qa3 g4 17.hg4 dc5+-) 15...Bd7 (15...Ndc6!?=) 16.Qa7+/- Rc8 (16...Ra7 17.ba7 Passed pawn) 17.Qa3 0-0? (17...Rc6+/-) 18.Qd3?? (18.Be5 Be5 19.Ne5 de5 20.Qe7 Be6+-) 18...f5? (18...e4 19.Qe4 Qe4 20.Ne4 Bb2 21.Rad1=) 19.Qb3 (better 19.Be5 de5 20.Qd7+-) 19...Be6 20.Qb4 (20.Qa3 Ndc6 21.Rad1= (worse 21.Qd6 Rfd8 22.Qa3 g4=+)) 20...Bf7 (20...g4 21.hg4 fg4 22.Nh2+=) 21.Rfd1 (21.Ne5 de5 22.Qe7 Qb6 23.Rab1+/- (worse 23.Be5 Nc6 24.Qg5 Ne5=+)) 21...Ndc6= 22.Qa3 Ra8 23.Qb3 g4 24.hg4 fg4 25.Nh4 Qg5 (25...Qh5!? 26.g3 Ra6=) 26.g3+= Ng6? (better 26...Rad8+=) 27.Ne4+- Qh5 28.Ng6 Qg6 29.Nd6 Be6 30.Qd3 (30.Bd3 Qf6 31.Rd2 Qe7+-) 30...e4 (30...Qf6!? 31.Rf1 Qe7+-) 31.Qc2 Bb2 (31...Ne5 32.Rd2+- (32.Nb7 Qf7 33.Rf1 Qb7=+)) 32.Qb2 Ra5 33.Bf1 (33.Qc2!? Qf6 34.Ne4 Qf5+-) 33...Rh5 34.Bg2 (34.Nb7 Ne5 35.Bg2 Nf3 36.Bf3 gf3-+) 34...Rh6 (34...Ne5 35.Qc2+- (35.Be4 Nf3 36.Bf3 gf3-+)) 35.c5 (better 35.Qb5!? Qf6 36.Ne4 Qg7+-) 35...Qh5 36.Ne4?? (36.Kf1 Qh2 37.Qc3 Qg3 38.Ne4 Rf2 39.Nf2 Rh2-/+) 36...Ne5 (36...Bc4 37.f4 gf3 38.Bf3 Qf3 39.Qg2 Qe3 40.Qf2 Rf2 41.Rd3 Bd3 42.Nf6 Rff6 43.Kg2 Be4) 37.c6?? (better 37.Rac1+-) 37...Nf3 38.Bf3 (38.Kf1 Bc4 39.Qe2 Be2 40.Ke2 Qb5 41.Rd3-+) 38...gf3 39.Nf6 (39.Qg7 Kg7 40.Rd7 Bd7 41.cd7 Qh1) 39...Rhf6 (39...Rff6 40.Rd8 Kg7 41.Rg8 Kg8 42.Qf6 Qh1) 40.Rd4 (40.Qf6 Rf6 41.Rd8 Kg7 42.Rc1 Qh3 43.Rd7 Bd7 44.cd7 Qg2) 40...Qh3 (40...bc6?! 41.Rh4 Qg5 42.a4-/+) 41.Rg4 Bg4 42.Qb3 Be6 (42...Be6 43.Qe6 Re6 44.cb7 Qg2; 42...Kg7 43.Qg8 Rg8 44.cb7 Qg2) 0-1. carlos78 (2360) - CrispinKream (2260), Rated Blitz game, lichess.org, 2016.

5.e3 Nh6 6.Be2 Be7 7.d4 e4 8.Nfd2 Qh4 9.h3 Be2 10.Qe2 Nc6 (10...f5 11.Nc3=) 11.a3 (11.g3 Qf6 12.b5 Nb4 13.Ne4 Qf5+/-) 11...0-0 (11...f5!?=) 12.g3+/- Qg5 13.Ne4 Qf5 14.Nbc3 Qg6 15.0-0 f5 16.Nd2 Rac8 17.Nd5 Bf6 18.Nf3 Kh8 (18...Rfe8 19.Nf4 Qf7 20.d5+-) 19.Kg2 Ne7 20.Nf6 Qf6 21.d5 Qg6 22.Nh4 (22.Nd4 Nf7+-) 22...Qf7+/- 23.Rad1 Ng6 (23...Rce8 24.Nf3 Qg6 25.Qd3+-) 24.Ng6 (24.Nf3 Qe8+-) 24...Qg6+/- 25.Rd4 Rce8 26.Qf3 Kg8 27.Rh4 Re4 28.Rf4 Rfe8 29.Rc1 Rf4 30.Qf4 Re4 31.Qf3 Qg5 32.c5 Kf7 (32...Qg6 33.cd6 Qd6 34.Bd4+-) 33.cd6 cd6 34.Rc7 Ke8?? (better 34...Re7 35.Rc4 b5+-) 35.Rg7 Qe7 (35...Qg6+-) 36.Re7 Ke7 37.Qh5 (37.Qh5 Nf7 38.Qf5+-) 1-0. jhonores (2215) - Houdini74 (2205), Rated Blitz game, lichess.org, 2020.

5.h3 Be6 =.

5.Nc3 b5 6.a4+- ba4 7.Ra4 Bb7 8.Be2 Nh6 (8...Nd7 9.b5 ab5 10.Ra8 Ba8 11.Nb5+-) 9.Qa1 Be7 10.b5 0-0 11.ba6 Bc6 12.Nb5 Bb5 (12...Nd7 13.a7 Nb6 14.Ra3+-) 13.Bb5 c6 14.Be2 Qg6 15.0-0 Qc2 (15...Nd7 16.Rb4+-) 16.a7 Nd7 17.Rc1 Qf5 (17...Qb3 18.d4+-) 18.Rc6 Nc5 19.Rc5! dc5 20.Ne5 f6 21.Nc4 Ng4 (21...Bd8+-) 22.f3 Ne5 23.Nb6 Nc6 (23...Kh8 24.Bb5 Rad8 25.Be5 fe5 26.Nd7+-) 24.Bc4 Kh8 25.Na8 Ra8 26.Ra6 Ne5 (26...Qc8+-) 27.Bd5 (27.Bd5 Rf8 28.a8Q+-) 1–0. Ddgs – Seer, internet, 2019.

5.Nc3 Be6 6.d4 ed4 7.Nd4 c6? (better 7...Nc6!? 8.Nc6 bc6+=) 8.Bd3 (8.Ne4 Qe7 9.Ne6 Qe6+-) 8...Nh6 9.0-0 c5? (better 9...Nd7+-) 10.bc5 (10.Ne6 fe6 11.Na4 Qd8 12.Qh5 Nf7 13.bc5 Nd7+-) 10...dc5 11.Ne6 Qe6 (11...fe6 12.Na4 Qd8 13.Qh5 Nf7 14.Rad1+- (14.Nc5?! Qa5+-)) 12.Nd5!! Bd6 (12...Qd5) 13.Bg7 Rg8 14.Nf6 Ke7 (14...Kd8 15.Ng8 Ng8+-) 15.Ng8 Ng8 16.Qf3 Nc6 (16...Bc7+-) 17.Bf5 Qc4 18.Rab1 Qh4 (18...Rb8 19.Rfd1 Nb4+-) 19.Rb7 Ke8 20.Qc6 Kd8 21.Qd7 1–0. Pierre – Renundow, internet, 2020.

5.Nc3 Ne7!?+-.

5.c4 c6 6.d4 e4 7.Nfd2 Bf5 8.Qc2 Nh6 9.Be2 (9.d5 Qh4+/-) 9...Be7 10.Nc3 0-0 (10...Qg6 A) worse is 11.Nce4 d5 (11...Qg2?! 12.0-0-0+=) 12.cd5 cd5–/+; B) 11.Nde4?! Qg2 12.Kd2 Qh3=; C) 11.0-0+=) 11.0-0-0 (better is 11.Nde4!? Qg6 12.Bf3+/-) 11...Nd7 12.h3 b5 (12...a5 13.ba5 Ra5 14.Nde4 Qe6+/-) 13.d5 cd5?? (better is 13...Ne5 14.Nde4 Qg6+-) 14.Nd5+- Qe6 15.Nc7 (better is 15.Nf4 a5 16.Ne6 fe6 17.Bc3+- (worse is 17.Ne4 ab4 18.g4 Bg6+-)) 15...Qg6 16.Na8 Ra8 17.Kb1?? (better is 17.g4!? Be6 18.Ne4+-) 17...Rc8 18.Qb3 (better is 18.g4 Be6 19.Qe4+-) 18...Be6= 19.Qa3 Rc6? (better is 19...bc4 20.Qa6 Rb8=) 20.cb5+- Rb6 21.ba6 Bd5? (21...Rb8+-) 22.a7 Ba8 23.Nc4 (23.Qc3 Bf8 24.Qc8 Rb4 25.Qa8 Qf6+-) 23...Rb7 24.Bd4?? d5+/- 25.Na5?? Rb4?? 26.Nb3+/- Kh8?? 27.Bc3 Rb6 28.Qe7 Qc6 29.Bd4 Rb7 30.Qg5 f6 31.Qf4 Nf8 32.Rc1 Qd7 33.Bf6! Ng6 34.Qh6 Ra7 35.Bg7! Qg7 36.Qg7 Kg7 37.Rc8 Ne7 38.Re8 Bc6 39.Re7! Re7 40.Nd4 Bd7 41.Rc1 Be8 42.Nf5 (42.Nf5 Kf6 43.Ne7 Ke7 44.Rc7 Kf6 45.Rh7+-) 1–0. Feng,Jason – Venturas,Bob, RN–2009–0-00243, 2009.

5.c4 Nc6 6.Qb3 Be6 7.d4 ed4 8.ed4 0-0-0?? 9.d5+- Ne5 10.de6 (better is 10.Ne5 de5 11.de6 Qe6+-) 10...fe6? (10...Nf3 11.gf3 (< 11.Qf3 Qb2 12.Qc3 Qc3 13.Nc3 fe6–/+) 11...Qe6 12.Qe3+-) 11.a4 Nf3 12.gf3 e5 13.Bh3 Kb8 14.Nd2 Ne7 15.Ne4 Qf4 16.a5 Nc6? 17.b5 ab5 18.cb5 Nd4 19.Bd4 ed4 20.a6 b6 21.Qd5 Qe3 22.fe3 de3 23.Qb7 (23.a7) 1–0. bentengutama – valerypavlovich, net–chess.com, 2002.

5.c4 Nc6 6.Qb3 Be6 7.d4 ed4 8.ed4 Qe7 9.Be2 d5+=.

5.c4 Nc6 6.Qb3 Be6 7.d4 ed4 8.ed4 Qf4?? 9.d5+- Bd5 (9...Ne5 10.de6 Nf3 11.gf3 fe6 12.Nd2+-) 10.cd5 Na7 (10...Qb4 11.Nc3 Qb3 12.ab3 Ne5+-) 11.Bd3 Nf6 (11...0-0-0 12.0-0 Nf6 13.Nc3+-) 12.0-0 Be7 (12...0-0-0 13.Re1+-) 13.Re1 Rd8 (13...Kf8 14.h3 Qh6 15.Nc3+-) 14.g3 Qf3 (14...Qg4 15.Nd4 Kf8 16.Nf5+-) 15.Bb5!! Nb5 (15...ab5 16.Qf3 Discovered attack; 15...Nb5 16.Qf3 Discovered attack) 16.Qf3 Rd7 (16...Kf8 17.a4 Na7 18.Re7 Ke7 19.Qe3 Kd7 20.Bf6+-) 17.Bf6 gf6 18.a4 Nd4 19.Qf6 Rg8 20.Qd4 1–0. Lavendel – Wenus, internet free game, 2018.

5.c4 Nc6 6.Qb3 Bg4 7.Be2=.

5.Bb5 c6 6.Be2 Ne7 7.d3 Ng6 8.Nbd2 Be7 9.0-0 d5 10.c4 Qd6 11.c5+= Qd7? 12.h3 Bf3+= 13.Bf3 0-0 14.e4 d4 15.Bc1 f5 16.ef5 Qf5 17.Bg4 Qf6?? 18.Ne4 Qf7+= 19.Bg5 Nf4 20.Bf4 ef4 21.Nd6 Bd6= 22.cd6 Kh8 23.Re1= Re8 24.Qd2 Nd7 25.Re8 Re8 26.f3 h5 27.Bd7+= Qd7 28.Qf4 Rd8? 29.Re1+- Qd6?? 30.Qh4 g6 31.Qg5 Rg8?? 32.Qh6# 1–0. HeresJhonny – DanM, Caissa.com, 2004.

5.Be2 b5 6.h3 (6.Bb5 c6 7.Be2 Nd7+/-) 6...Bf5 7.Bb5 Nd7 8.Bc6 Rb8 9.a3 Rb6 10.Bd5 c6 11.Bc4 d5 12.Be2 Qg6 (better is 12...a5!?+=) 13.Nh4+/- (13.Ne5?! Ne5 14.Be5 Bc2=) 13...Qg5 14.Nf5 Qf5 15.Bg4 Qe4 16.Bd7 Kd7 17.Qg4 (better is 17.0-0+-) 17...Ke8? (better is 17...Qg4 18.hg4 Ke6+=) 18.Qe4 de4 19.Be5 Nf6 20.Bf6 gf6 21.Nc3 f5 22.g4 fg4 23.hg4 h6? (23...Bg7+-) 24.Ne4 Rg8 (24...Ke7 25.d4+-) 25.f3 (better is 25.Nf6 Kd8 26.Ng8 c5 27.bc5 Rg6 28.Nh6 Bh6+-) 25...Ke7 26.c4 Ke6 27.c5 Rb7 28.d4 Kd5 29.Ke2 Kc4 30.Nd6 Bd6 31.cd6 Rd7 32.Rh6 Rf8 33.Rc1 Kb3 34.Rc6 Ka3 35.Rc7 Rc7 36.dc7 Kb4 37.Ra6 Ra8 38.Kd3 Kb5 39.Rf6 a5 40.Rf7 a4 41.Rh7 a3 42.Rh1 Kc6 43.Rc1 Kd7 44.c8Q! Rc8 45.Rc8 Kc8 46.Kc2 a2 47.Kb2 a1Q 48.Ka1 Kd7 49.e4 Ke6 50.f4 Kf6 51.d5 Ke7 52.e5 Kf7 53.f5 White prepares the advance e6 53...Kg7 54.g5 Kf7 55.d6 Kg7 56.e6 Kh7 57.d7 Kg7 58.d8Q Kh7 59.Qd7 Kg8 60.e7 Kf7 61.e8Q 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013. (=1.Nf3 d6 2.b4 e5 3.e3 Qf6 4.Bb2 Bg4 5.Be2 b5)

5.Be2 Nc6 6.a3 a6 7.c4 g6 8.Nc3 (8.Qa4 Bd7 9.b5 Na7+-) 8...Bg7 9.b5 Nce7 (9...ab5!? 10.cb5 Na5+-) 10.h3+- Be6? (10...Bc8 11.b6 cb6+-) 11.Ne4 Qf5 12.g4 Qe4 13.d3 Qf3 14.Bf3 ab5 15.cb5 (15.Bb7?! Rb8 16.Bf3 bc4+-) 15...Rb8 (15...c6 16.a4+-) 16.Qc2 Kd7 (16...c6+-) 17.Rc1 c6 (17...c5 18.bc6 bc6 19.Bc6 Kd8 20.Ba4+-) 18.bc6 bc6 19.Bc6 Kd8 20.Ba4 Rc8 21.Qd2 Nf6 (21...Rc1 22.Bc1 Nd5+-) 22.Qa5 Rc7 23.Qc7 1–0. Lavendel – Cicak, internet free game, 2018.

5.Be2 Nc6 6.a3 d5 7.0-0 (7.b5 Bf3 8.Bf3 Nce7+=) 7...Nh6 (7...Bd6!?=) 8.b5+= Na5 (better is 8...Bf3!? 9.Bf3 Ne7+/-) 9.Be5+/- Qe6 (better is 9...Qe7!? 10.Bd4 Nf5+-) 10.Bc7+- b6 (10...Nc4 11.Nd4 Be2 12.Qe2+- (12.Ne6 Bd1 13.Nd4 Bg4–/+)) 11.Nc3 Rc8 12.Nd4 Qd7 13.Bf4 Bc5 (13...Be2 14.Qe2 Nf5 15.Qd3 Nd4 16.Qd4+-) 14.Bh6 gh6 (14...Be2 15.Qe2 gh6+-) 15.Bg4 f5 (15...Qd8 16.Bc8 Qc8 17.Nd5 Bd4 18.ed4+-) 16.Bf5 Qg7 17.Qh5 (better is 17.Bc8!? Bd4 18.ed4 Qd4 19.Qe2 Kf7 20.Qh5 Ke7+-) 17...Kd8 18.Ne6 1–0. Janek – Kevin, internet free game, 2017.

5.Be2 Nc6 6.a3 Qd8 7.Nc3 f5 (7...Nf6 8.0-0+/-) 8.h3 (8.d4 e4 9.d5 ef3 10.gf3 Bh5 11.dc6 bc6+/-) 8...Bh5+/- 9.0-0 Nf6 10.d4 (10.b5 Na5+/-) 10...e4 11.Ng5 Be2 12.Ne2 Ng4?? (better is 12...d5 13.c4 dc4+/-) 13.Ne6+- (13.hg4?! Qg5 14.d5 Ne5 15.Be5 de5 16.gf5 Qf5+/-) 13...Qh4 (13...Qd7 14.hg4 Qe6+-) 14.hg4 fg4 (14...d5 15.gf5 Bd6 16.N2f4+-) 15.Nc7 Kd7 (15...Kf7 16.Na8 d5 17.Nc7+-) 16.Na8 Be7 (16...Kc8 17.Nf4 Kb8 18.g3+-) 17.d5 Ne5 18.Be5 de5 19.d6! Bg5 (19...Bd6 20.Qd5 Double attack (20.Qd5 Decoy)) 20.Qd5 Rb8 21.Qf7 Kd6 (21...Be7 22.de7 Qf2 23.Rf2 Kc6 24.Qe6 Kb5 25.Nc3) 22.Rfd1 Kc6 23.Qd7 1–0. pierred – anony, internet, 2015.

5.Be2 Nc6 6.a3 Be6 7.Nc3 =.

5.Be2 Nc6 6.b5 Nce7 7.c4 Ng6 8.0-0 N8e7 9.a4 Qf5 (9...d5 10.d4 e4 11.Nfd2 Be2 12.Qe2+=) 10.d4 0-0-0 (10...e4 11.Nfd2 Be2 12.Qe2+=) 11.Nfd2 (11.h3 Bf3 12.Bf3 Kb8+/-) 11...Be2+= 12.Qe2 Re8 13.e4 Qf4 14.Qf3 (14.a5 f5+/-) 14...f5+= 15.ef5 Nf5 16.Qf4 (16.Re1!?+=) 16...Nf4= 17.de5 de5 18.Nf3 (18.Nc3 Nh4 19.g3 Nd3=) 18...e4+= 19.Nd4?? (19.Nfd2+=) 19...Nd6 (better is 19...Nd4 20.Bd4 Ne2 21.Kh1 Nd4–+) 20.Nc3 (better is 20.Nd2=) 20...Nc4–+ 21.Bc1 Nd3 22.Nde2 (22.Be3 Bb4 23.Nd5 Bd6–+) 22...Bb4 (22...Bc5 23.Nd1–+) 23.Nd5 Rd8 (23...Bc5 24.Ne3 Nd6 25.Nc2–+) 24.Nb4–/+ Nb4 25.Ng3 Rhe8 26.Bg5 Rd5 27.Be3 Nc2 28.Rac1–/+ N2e3 29.fe3 Ne3 30.Rf7 Rd7 31.Rd7 Kd7 32.Re1 Nd5 33.Rd1? Kd6 34.Nf5 Ke5 35.Ng7 Rg8 36.Nh5 Ne3 37.Rd2 Rg5 38.Ng3 Rg7 39.Re2–/+ Rg4. Hal1958 – Wilmy, playchess.de, 2004.

5.Be2 Nd7 6.0-0 d5 7.h3 Bf3 8.Bf3 Bb4 9.a3 Be7 10.Bd5 0-0-0 11.Nc3 h5 12.Rb1 c6 13.Bc4 Nb6 14.Ba2 g5 15.f4 gf4 16.ef4 Qh6 17.Bf7 Rd2 18.Qd2 ef4 1–0. Bonetti,Shane – guest903, ICC, 2002.

5.Be2 Nd7 6.0-0 Ne7 7.d4 e4 8.Nfd2 Be2 9.Qe2 d5 10.c4 Qg6 11.Nc3 Qe6 12.b5 a6 13.cd5+/- Nd5 14.Nce4 Be7 15.a4 0-0 16.Nc3 c5 17.Nd5+- Qe5?? 18.e4 Qd6 19.Nc4 Qg6 20.f4 cd4 21.Bd4 Nc5 22.f5 Qh6 23.Rf3 Rad8 24.Be5 f6 25.Rh3 Qg5 26.Rh5 Qh5 27.Qh5 fe5 28.Qe2 (28...Rfe8 29.Nc7+-) 1–0. Osmak,Yulia – Gazikova,Veronika, EU–ch U10 Girls, 2007.

5.Be2 Nd7 6.h3 Bh5 7.0-0 Ne7 8.Nc3 d5 9.a4 Qe6 (9...c6 10.a5+-) 10.Nb5 (better 10.e4+-) 10...Kd8? (better 10...0-0-0 11.Na7 Kb8+-) 11.Ng5 (11.Nfd4 ed4 12.Nd4 Qd6 13.Bh5 Ng6+-) 11...Qf6 12.Bh5 Qg5 13.f4 ef4 14.ef4 Qh6 (14...Qf5 15.Bc3+-) 15.Bf7 c6 (15...Nc6 16.Qe2 (16.Bd5?! Nb4 17.Be4 c6+-) 16...Bb4 17.Rae1+- (17.Bd5?! a6+-)) 16.Nd4 Nf6 (16...Qd6 17.Bc3+-) 17.b5 Ne4 (17...c5 18.Ne6 Kc8 19.Qe2+-) 18.bc6 bc6 (18...Nc5+-) 19.Ne6 Kc8 20.Qg4 Kb7 (20...Nf6 21.Qe2 a5 22.Nf8 Rf8 23.Qe7 Rf7 24.Qf7 Qg6+-) 21.Rfb1 Ka6 22.Qe2 Ka5 (22...Kb7 23.Ba3 Kc8 24.Qa6 Kd7 25.Qb7) 23.Bd4 Nf5 24.Rb5! Ka6 (24...cb5 25.Qb5 Mate attack) 25.Nc7 1–0. Pereira – Grandie, internet, 2019.

5.Be2 Be6 6.0-0 (6.Nc3 Nd7+-) 6...Nd7 (6...Qg6 7.d4 e4 8.Nh4+-) 7.Nc3+- Nh6 (7...d5!?+-) 8.d4+- Be7 9.d5 (9.de5 Ne5 10.Ne5 Qe5+-) 9...Bf5 (9...Bg4 10.h3 Bf3 11.Bf3+- (11.gf3?! Qh4=)) 10.e4 Bg6 (10...Bg4 11.h3 Bf3 12.Bf3+- (12.gf3?! Qg5 13.Kh2 Qf4 14.Kg2 Qg5 15.Kh2 Qf4 16.Kg2 Qg5 17.Kh2=)) 11.h3 (better 11.Qd3+-) 11...0-0? (better 11...Bd8+-) 12.Bc1 Bd8 (12...a5 13.Rb1 Bd8 14.Bg5 Qf3 15.Bf3 (worse 15.gf3 Bg5 16.ba5 Nc5+-) 15...Bg5 16.Bh5+-) 13.Bg5 Qg5 14.Ng5 Bg5 15.g3 f5 16.h4 Be7 17.h5 Bf7 (17...Be8 18.Qd3+-) 18.ef5 Nf5 19.Bg4 Be8 20.Nb5 a6 (20...Bd8 21.Qd3 Nh6 22.Be6 Kh8 23.f4 ef4 24.Rf4 Rf4 25.gf4+-) 21.Nc7 Rd8 (21...Rc8 22.Ne8 Rce8 23.c4+-) 22.Bf5 Rf5 23.Qg4 Rg5 (23...Rf8 24.Ne6 Rf7 25.Nd8 Bd8+-) 24.Qe6 Kf8 25.f4 Bf7 (25...ef4 26.Rae1 Re5 27.Rf4 Nf6 28.Re5 de5+-) 26.fg5 Bg5 27.Qf7 1–0. guestexbd – guestluvp, internet free game, 2018.

5.Be2 Bf3 6.Bf3 c6 7.0-0 d5 8.a3 Bd6 9.e4 Qh6 10.ed5 e4 11.Bh5 g6 12.dc6 Nc6 13.Bh8 gh5 14.Re1 f5 15.f3 h4 16.fe4 Nge7 17.b5 h3 18.bc6 hg2 19.e5 Bc5 20.d4 Bb6 21.cb7 Rb8 22.c3 Rb7 23.Ra2 Nd5 24.Rg2 Ne3 25.Rg8 Kf7 26.Qb3 Ke7 27.Bf6 Kd7 28.Qb5 Kc7 29.Bd8 1–0. guest269 – guest245, ICC, 2002.

5.Be2 Bf3 6.Bf3 c6 7.b5 Ne7 8.0-0 d5 9.Bg4 (9.c4 Nd7 10.cd5 cd5 11.Nc3+-) 9...cb5 (better 9...h5!? 10.Bh3 g5+- (10...cb5? 11.f4+-)) 10.f4+- Nec6?! (10...h5 11.fe5 Qh6+-) 11.fe5 Qe7 12.Nc3 Ne5 13.Nd5 Qd6 14.Be5 Qd5 15.Rf5 Qe4 16.Bf4 Be7 (16...Nc6 17.Rb5 Rd8 18.Bf3+-) 17.Rb5 b6 (17...Nc6 18.Rb7 Rd8+-) 18.Bf3 Qc4 (18...Qa4 19.Rab1+-) 19.Rab1 Nc6 (19...0-0 20.Ba8 Nc6 21.Bb7+-) 20.Bd5 (20.Bd5 Qd5 21.Rd5+-) 1–0. Pierre – Waldorffy, internet, 2020.

5.Be2 Bf3 6.Bf3 c6 7.Nc3 Nd7 (7...d5 8.b5=) 8.b5 (8.e4 Be7+=) 8...Rc8 (8...d5 9.0-0=) 9.0-0+= Nh6 (9...d5 10.Bg4+=) 10.a4 (10.Be2 d5+=) 10...Rc7 (10...d5 11.Be2+=) 11.a5+- c5? (better 11...d5+-) 12.Nd5+- Qd8 13.Nc7 Qc7 14.b6! ab6 15.ab6 Qb6 (15...Nb6 16.Qb1+-) 16.Bc3 Be7 (16...f5 17.Ra8 Kf7 18.Qa1+-) 17.Qe2 0-0 (17...Qc7 18.Ra8 Bd8 19.Rb1+-) 18.Rfb1 Qd8 19.Rb7 (19.Bb7?! Nf6+-) 19...Nf6 (19...Bg5 20.Qd3 Nf6 21.Ba5+-) 20.Raa7 Re8 21.Bc6 Nd5 (21...Bf8+-) 22.Be8 Nc3 23.dc3 Bf6 (23...Bf8 24.Bf7 Nf7 25.Rf7 Qb8+-) 24.Qb5 g5 25.Bf7 Nf7 26.Rf7 h6 (26...Be7 27.Rfe7 Kf8 28.Rg7 Qc7 29.Rgc7 d5 30.Qb8) 27.Qd3 (27.Qd3 e4 28.Qe4 Bg7 29.Rg7 Kh8 30.Qh7) 1–0. Janek – Tyldum, internet, 2017.

5.Be2 Bf3 6.Bf3 Nc6 7.b5 Na5 8.Bc3 Nc4 9.d3 Nb6 10.Bb7 Rb8 11.Bc6 Nd7 12.Qg4 Qe7 (12...Qd8 13.Qa4+-) 13.Nd2 Ngf6 (13...Qd8 14.Nb3+-) 14.Qa4 g6 (14...Qd8 15.Qa7 Be7 16.Ba5+-) 15.Qa7 Rd8 (15...Rc8 16.Bb7 Rd8 17.Ba5+-) 16.Ba5 Bg7 17.Bc7 0-0 18.Bd8 Rd8 (18...Qd8 19.0-0+-) 19.b6 Nc5 (19...d5+-) 20.Qe7 (20.Qe7 Rb8 21.Qd6+-) 1–0. Pierre – Mothiash, internet, 2020.

5.Be2 g5 6.Nc3+- Bg7 (6...Ne7 7.h3 Bf3 8.Bf3+- (8.gf3?! Nd7+=)) 7.0-0 (7.h3 Bd7+-) 7...Qh6? (better 7...Ne7+-) 8.Nd5 Kd7 (8...Bf3 9.Nc7 (9.gf3?! Kd8+-) 9...Kd8 10.Na8 (10.Bf3 Kc7 11.d4 Ne7–/+) 10...Be2 11.Qe2+-) 9.Ne5! Be5 (9...de5 10.Bg4 Discovered attack; 9...Be5 10.Bg4 Discovered attack) 10.Bg4 Kc6 (10...Kd8 11.Be5 de5+-) 11.Be5 de5 12.Qf3 Kd6 13.Qf7 Qg6 (13...c6 14.c4 Qh2 15.Kh2 cd5 16.c5 Kc6 17.Qe8 Nd7 18.Qd7) 14.Qc7 Kd5 15.Qc5 Ke4 16.f3 1–0. Pierre – Chessy, internet, 2020.

5.Be2 a6 6.Nc3 =.

5.Be2 Nc6 6.a3 Nce7 7.h3 Bh5 8.d3 0-0-0 9.Nbd2 g5 10.g4 Bg6 11.c4 h5 12.Nh2 (12.h4!? gh4 13.g5+= (worse is 13.Nh4 hg4 14.Bg4 Kb8+=; 13.Rh4?! hg4 14.Rg4 Rh1 15.Rg1 Rg1 16.Ng1 Qh8=)) 12...hg4= 13.Bg4 Kb8 14.Qf3 Qf3 15.Nhf3 f5 (better is 15...Nh6!? 16.Rg1 f6=) 16.ef5+/- Bf5 (16...Nf5!? 17.Ng5 Ng7+/-) 17.Bf5 Nf5 18.Ng5 Be7? (better is 18...Re8+-) 19.Nf7 Nf6 20.Nd8 Rd8 21.0-0-0 Rg8 22.Ne4 Ne4 23.de4 Nh4 24.Rdg1 Rg1 25.Rg1 b6 (25...Kc8 26.Rg7 Kd8 27.Kd1+-) 26.Rg8 Kb7 27.Rh8 Nf3 28.Kd1 a5 29.Ke2 Nh4 30.Bc1 ab4 31.ab4 Ka6 32.b5 Ka5 33.Rh4! Bh4 34.Bd2 Ka4 35.Kd3 Kb3 36.f4 ef4 37.Bf4 Bf6 38.Be3 Kb4 39.Bd4 Bg5 40.e5 de5 41.Be5 Bd8 42.h4! Bh4 43.Bc7 Be7?? 44.Bb6 Bc5 45.Bc5 Kc5 46.Kc3 Kb6 47.Kd4 Kc7 48.Kd5 Kb6 49.Kd6 Kb7 50.c5 Ka7 51.c6 Kb6 52.c7 Kb5 53.c8Q Kb6 54.Qb8 Ka5 55.Kc5 Ka4 56.Qb4 1–0. Fournier,Frederic (1925) – joel3008(C), Active (5/0), 2005.

5.Be2 Nd7 6.0-0 Ne7 7.Nc3 c6 8.d3 d5= 9.Nb1 Ng6 10.Nbd2 Bb4–/+ 11.c3 Bd6 12.d4 0-0 13.Rb1 Rab8 14.Re1 Bf3 15.Bf3 ed4 16.cd4 de4 17.Ne4= Qe7 18.d5 Be5=+ 19.d6 Qe8 20.Bg4?? f5–+ 21.Bf3 fe4 22.Be5 Nge5 23.Be4 Qf7 24.f3 a6 25.Bc2 Kh8 26.Bb3 Qg6 27.Qd2 Nf3 (28.Kh1 Nd2–+) 0–1. losertoo (1860) – rodnel, net–chess.com, 2006.

5.Be2 Nd7 6.d4 ed4 7.Bd4 Qe7 +=.

5.Be2 Nd7 6.d4 Qf4 7.Nc3 Ne7 (7...c6 8.0-0+= (8.d5 Ne7 9.dc6 Nc6 10.b5 Ne7 11.0-0 Qf6 12.a4 Nc5 13.h3) 8...Ne7 9.h3 ed4 10.Nd4 Be2 11.Nde2 Qh6 12.Bc1 Qe6 13.a4) 8.Bc1 (8.g3 Qf6+/- (8...Qh6 9.de5 Bf3 10.Bf3 de5 11.0-0 0-0-0 12.Bg4 Qg6 13.Bh3) 9.Nb5 Bf3 10.Bf3 0-0-0 11.d5 a6 12.Nc3 Kb8 13.a4; 8.0-0 0-0-0 9.Bc1 Qf6 10.Be3 Qg6 11.d5 f5 12.Nh4 Be2 13.Qe2; 8.h3 Bf3 9.Bf3 a5 10.Nb5 0-0-0 11.g3 Qg5 12.0-0 ab4 13.a3; 8.Rb1 0-0-0 9.0-0 ed4 10.Nd4 Ne5 11.Bc1 Be2 12.Qe2 Qg4 13.f3) 8...Qf6+= 9.Nb5 (9.Be3 ed4 10.Nd4 Be2 11.Qe2 c5 12.Ndb5 a6 13.Bg5) 9...Kd8 (9...0-0-0 10.Na7 Kb8 11.Be3 d5 12.de5 Ne5 13.Ne5) 10.d5 (10.Be3 a6 11.Nc3 Bf3 12.Bf3 ed4 13.Bd4) 10...h6 (10...a5 11.c3+= ab4 12.cb4 Qg6 13.h3; 10...Qg6 11.h3 Bf3 12.Bf3 c6 13.dc6) 11.Na3 (11.Be3 a6 (11...a5 12.a3 Ng6 13.0-0) 12.Nc3 Ng6+= 13.0-0; 11.0-0 a6 12.Nc3 a5 13.ba5) 11...a6 (11...a5 12.ba5 (12.c3 ab4 13.cb4) 12...Nc5 13.Nd2+=) 12.c4 (12.h3 Bf3 13.Bf3 Qh4+=; 12.Nc4 c6 13.Ne3) 12...c6 (12...a5 13.Rb1= (13.ba5 Nc5 14.Rb1=)) 13.Be3 (13.h3 Bf3 14.Bf3 cd5 15.cd5 Rc8+/-) 13...cd5 14.cd5 Rc8 (14...Qg6 15.Qc2+=) 15.Nd2 (15.0-0 Bh5+/-) 15...Be2+= 16.Qe2 Ng6 17.g3 (17.0-0 Nf4 18.Bf4 Qf4+/-) 17...Be7 (17...Nf4 18.Qf1+= (worse is 18.gf4 ef4 19.Rb1 fe3 20.fe3 b5+=)) 18.0-0 (18.b5+=) 18...b5 (18...Nf4 19.Bf4 ef4 20.Rfc1=) 19.Nb3 (19.Rac1 Rc1 20.Rc1 Nf4+-) 19...Ke8 (19...Nf4 20.Bf4 ef4 21.Rac1+/-) 20.Na5 (better is 20.Rac1!? Rc1 21.Rc1+- (21.Bc1?! Bd8+=; 21.Nc1?! Bd8+=)) 20...Bd8+= 21.Nc6 Bb6 (21...h5 22.Nb1+/-) 22.Bb6 Nb6 23.Qe3 Nd7 (better is 23...Na8+/-) 24.Qa7+- Ne7 25.Qa6 Nc6 (25...Nb8 26.Nb8 Rb8 27.Nb5 h5+-) 26.Qc8 Qd8 27.Qc6 Ke7 28.Nb5 Nb8 29.Qc7 Qd7 30.Qd7 Kd7 31.Na7 Na6 32.Nc6 Rc8 33.b5 Nc5 34.b6 Nb7 35.a4 Ra8 36.a5 Ra6 37.Nb8 Ke8 38.Na6 (38.Na6 Ke7 39.Nb4+-) 1–0. Torres Herrero,F – Nielfa Pascual,A, Valladolid CC Social, 1989.

4.a3 a6 5.g3 Ne7 6.c4 c6 7.Nc3 Ng6 (7...Bc7 8.d4 d6 9.c5 dc5 10.dc5=) 8.h4 (8.Ne4 Qe7 9.h4 h5+-) 8...h5 (8...Bc7 9.Bh3+=) 9.Ne4+- Qe7 10.c5 Bc7 11.Bh3 (11.d4 0-0+-) 11...f6 (11...b6 12.d4 bc5 13.dc5+-) 12.Qc2 Nf8 (12...Qf7!?+-) 13.d4+- ed4 (13...Rh6 14.de5 fe5 15.0-0+-) 14.Nd4 (14.Bd4?! Ne6+-) 14...Kd8 (14...Ne6 15.Nf5 Qf8 16.Ned6 Kd8 17.0-0+-) 15.Nf5 Qf7 16.Ng7! Qg7 (16...Nh7 17.Nf5 Qg6+-) 17.Bf6 Qf6 18.Nf6 Be5 19.Qf5 Ba1 20.Kd2 (20.Nh5?! Ne6+-) 20...Bb2 21.Kc2 Bd4 (21...Ne6 22.Kb2 Rf8+-) 22.Qg5 Nh7 23.Nh7 Kc7 24.Qf4 Kd8 25.Ng5 (25.Ng5 Bg7 26.Qd6+-) 1–0. Janek – Tiago, internet, 2018.

4.a3 b6 5.g3 Ne7 (5...a5 6.b5=) 6.Nc3 Bb7 7.Bg2 0-0 8.0-0 c5 (8...Re8!?=) 9.Nb5+= Bc6 (9...Ng6!?+=) 10.Nd6+/- Qd6 11.Be5 Qg6 12.c4 d6 13.b5 (13.Bf4 a6 14.d4+/-) 13...Bf3? (better 13...de5!? 14.Ne5 Qe6 15.Nc6 Nbc6 16.bc6 Rac8+/-) 14.Bf3+- Nd7 15.Ba8 Ne5 16.Bd5 (16.Bg2 Nc4 17.d3 Na5+-) 16...Qg4 (16...Nd5 17.cd5 Qe4 18.d3 Qd5 19.Qa4+-) 17.e3 (17.f4 Nd5 18.cd5 Ng6+-) 17...Qd7 (better 17...Nd5 18.Qg4 Ng4 19.cd5 Nf6+-) 18.d4 N5g6 19.Be4 f5 (19...Rd8 20.Qd3+-) 20.Bg2 Qc8 21.Rc1 a6 22.dc5 (22.Qa4 a5+-) 22...dc5 23.a4 Rd8 24.Qc2 Ne5 25.Rfd1 Rf8 (25...ab5 26.Rd8 Qd8 27.cb5+-) 26.Rd6 Qb8 27.Rcd1 ab5 28.cb5 Kf7 (28...Nf7 29.Rd7 Qe5 30.Qa2+-) 29.Bd5 (better 29.f4 Kg8 30.fe5 Kh8+-) 29...Nd5 30.R1d5 (better 30.Qf5 Nf6 31.Qe6 Kg6 32.Qe5 Re8+-) 30...Ke7 (30...Kg8+-) 31.f4 Nf7 (31...Qd6 32.Rd6 Kd6 33.fe5 Ke5+-) 32.Rd7 (32.Re6 Ke6 33.Qf5 Ke7 34.Rd7 Ke8 35.Qe6) 32...Kf6 (32...Ke8 33.Qf5 Nd8 34.Qe4 Qe5 35.Qe5 Ne6 36.Qe6) 33.Qf5 1-0. wlittle (2255) - mlaurent (1965), net-chess.com, 2004.

4.a3 Qe6 5.e3 Nf6 6.c4 e4 (6...Nc6!?+=) 7.Nd4+/- Qe5 8.c5 Be7 9.Qc2 (better 9.Nb5 Qb2 10.N1c3+-) 9...0-0?? (better 9...Qg5+=) 10.Nb5+- Qg5 (10...Qe6 11.Nc7 Qc6 12.Na8 b6 13.Nb6 ab6+-) 11.Nc7 d5 (11...d6 12.cd6 Bd6 13.Na8+-) 12.cd6 (12.Na8!? Bd7 13.b5 Rc8+-) 12...Bd6 13.Na8 Nc6 14.g3 (14.h4 Qg6 15.b5 Ne5+-) 14...Bg4 15.Nc7! White prepares b5 15...Bc7 16.h4 (better 16.b5 Ne5 17.f4 ef3 18.Bd4+/- (18.Qc7 f2 19.Kf2 Ne4 20.Kg2 Qf5 21.Qf7 Rf7 22.Be5 Qf2)) 16...Qf5 17.b5 (better 17.d4!?+-) 17...Ne5+= 18.Be5 (worse 18.Qc7 Nf3 19.Kd1 Nh4 20.Kc2 Rc8 21.Qc8 Qc8 22.Nc3 Ng6=+) 18...Be5 19.Nc3 Bf3 20.Rg1 Qg4 21.Rc1 Rc8 22.Qb3 h6 23.a4 b6 (23...Qd7 24.Bc4+/-) 24.Na2+- Rc1 25.Nc1 Qd7 26.Be2 Ng4 (better 26...Be2 27.Ne2 Qg4+-) 27.Qd1?? (27.Bf3 ef3 28.d4 Bc7+-) 27...Qf5? (better 27...Nh2=) 28.Bf3+- ef3 29.d4 (29.Qb3 Bd6+-) 29...Bd6 (better 29...Ne3 30.Qd3 Nc2 31.Kd2 Nd4 32.Qf5 Nf5+-) 30.Qd3?? (better 30.Nd3+-) 30...Bb4-+ 31.Kd1 Nf2 (31...Nf2 32.Kc2 Qc8 33.Kb1 Nd3 34.Nd3 Qc3 35.Nb4 Qb3 36.Ka1 Qb4-+) 0-1. Fournier,Frederic – NN, jeu.europe-echecs.com, 2013.

4.a3 Nh6 5.e3 c5? (better 5...Nc6!?+=) 6.bc5+- Bc5 7.Be5 Qg6 8.Bg3 Nc6 9.Nc3 0-0 10.Bd3 Qh5 11.Be2 d6 12.d4 Bb6 13.Ne5 Ne7?? (better 13...Qg5 14.Nc6 bc6 15.Bd6 Ba5+-) 14.Bh5+- Nef5 (14...Ba5 15.Qd2 Nd5 16.Nd5 Bd2 17.Kd2 de5 18.Be5+-) 15.Be2 (better 15.Nc4 Be6 16.d5 Bd7+-) 15...Ng3 16.hg3 Bg4 (16...Ba5 17.Qd2 de5+-) 17.Ng4 Ng4 18.Bg4 Rae8 19.Qd3 g5 20.Qh7 1-0. Fournier,Frederic (1825) - sion13, Active, 2011.

4.Na3 Bb4 5.Be5 Qg6 6.Nb5 +/-.

4.Na3 Nc6 5.Nc4 Qe6 6.Nd6 cd6 7.d4 Qf5 8.de5 Nb4 9.Nd4 Qe5 10.Qd2 Nc6 11.c4 Nf6 12.Nb5 Ne4 (12...Qc5 13.Bf6 0-0 14.Qg5 Qg5 15.Bg5+-) 13.Be5 Nd2 14.Bg7 Rg8 15.Nc7 Kd8 16.Na8 (16.Kd2?! Kc7 17.Bc3 b6+/-) 16...Nc4 (16...Rg7 17.Kd2 b6 18.Rb1+-) 17.Bf6 Ne7 18.e3 b5 19.a4 Bb7 (19...a6 20.ab5 ab5 21.Ra7+-) 20.ab5 Ne5 21.Ra7 Bc8 (21...Bg2 22.Bg2 Rg2 23.Nb6+-) 22.Nb6 Rg6 23.Be7 Ke7 24.Nc8 Kd8 25.Nb6 f5 26.Nd5 Ke8 27.Ra8 Kf7 28.b6 Ke6 29.Nf4 Kf6 30.b7 Nc6 31.Bb5 (31.Bb5 Rg2 32.Bc6+-) 1-0. Maec,Michael - Wessel,Kai, remoteschach.de, 2003.

4.Na3 Ne7 5.Nc4 Now all is on e5 5...Ng6 6.b5 0-0 7.h4 Qf5 (7...Re8!?+=) 8.h5+/- Ne7 9.h6 (9.Be5?! Be5 10.Nce5 d6=) 9...g6 10.d3 (10.Be5?! Be5 11.Nce5 d6=) 10...e4 (better 10...Qe6!?+=) 11.Nd6+- cd6 12.de4 Qe4 13.Qd6 Qe6 14.Qa3 (14.Qd4 f6 15.Ng5 Qd5+-) 14...Nd5? (14...f6+-) 15.0-0-0 (15.c4 Nc7 16.Ng5 Qe8+-) 15...d6 16.e4! Qe4 (16...Nf4 17.Qd6 Qd6 18.Rd6+-) 17.Rd5! (17.Qd6?! Nb4 18.Nd4 Nd5+-) 17...Qd5 18.Qc3 f6 19.Bc4 (19.Bc4 Be6 20.Bd5 Bd5 21.Rd1 Ba2 22.Rd6+-) 1-0. pierre – toy, internet, 2011.

4.b5 a6 5.a4 b6 6.e4 (6.Na3 Bb7=) 6...Bb7 7.d3 (7.d4 A) 7...Be4? 8.de5 (8.Ne5?! Be5 9.de5 Qg6=) 8...Qe6 9.ed6 Bf3 10.Be2 Bg2 11.Rg1+- (worse 11.Bg7 Bh1 12.dc7 Nc6 13.bc6 Qc6+-); B) 7...ed4 8.Qd4 Be7=) 7...Bb4 (7...Ne7 8.Be2=) 8.c3 (8.Nbd2 Bd2 9.Qd2 d6+=) 8...Bd6 9.Nbd2 Nh6 (9...Ne7 10.Be2=) 10.h3 (10.Nc4+=) 10...ab5 (better 10...Qe7!?=) 11.ab5+/- Ra1 12.Qa1 Ng8?? (better 12...Qd8+/-) 13.Qa7+- Be4 (13...Bc8 14.Qb8 Ne7+-) 14.Qb8 Ke7 (14...Qd8 15.Qd8 Kd8 16.Ne4+-) 15.Ne4 Qh6 (15...Qe6 16.Nfd2 c6 17.Qb6+-) 16.Nd6 (better 16.c4 Qe6 17.Nd6 cd6+-) 16...cd6 (16...Qd6 17.Qa7 Kf6 18.Qa4+-) 17.Qb6 (better 17.Ba3!? Qe6 18.Ng5 Qg6+-) 17...Nf6 18.Ba3 Ra8 (18...Nd5 19.Qb7 Nc3 20.Ne5 Qe6+-) 19.Ne5 (better 19.Qd6 Kd8 20.Ne5+-) 19...Ra3 20.Qd8! Ke6 (20...Kd8 21.Nf7 Double attack) 21.Kd1?? (better 21.Nd7 Ra1 22.Ke2 Ra2 23.Kf3 Qh5 24.g4 Qd5 25.Kg3 Nd7 26.Qe8 Kf6 27.Qd7 Qe5 28.Kg2 Qd5 29.Kg1+-) 21...Ra1 (21...de5 22.Qb6 d6-/+) 22.Kc2?? (better 22.Ke2 de5 23.Qb6 d6 24.Qe3 Qh5 25.g4 Ng4 26.Qf3=+) 22...Ra2 (22...Qc1 23.Kb3 Qa3 24.Kc2 Qa2) 23.Kb3-+ Ra1 (23...Qd2 24.Nc6 Rb2 25.Ka4 Qd1 26.Ka5 Qa1 27.Kb6 Nd5 28.Kb7 Rb5 29.Qb6 Rb6 30.Kc8 Qa8 31.Nb8 Rb8) 24.Qb6 (24.Nd7 Nd7 25.Qe8 Kf6 26.Qd7 Qf4 27.Qd8 Kg6+-) 24...Qd2 (24...Qc1 25.Qd6 Kd6 26.Nc4 Kc7 27.Be2 Rb1 28.Nb2 Rb2 29.Ka4 Qc2 30.Ka5 Qc3 31.Ka6 Ra2) 25.Qd6!+- Kf5 (25...Kd6 26.Nc4 Double attack) 26.g4 Kg5 27.Nf3 Kg6 28.Nd2 h6 29.Bg2 Ra5 30.Be4 Kg5 31.Nf3 1-0. mtr - merlinthegreat1, internet, 2001.

4.b5 a6 5.a4 Ne7 6.e3 Nd5 (6...b6 7.a5=) 7.Bc4 Ne7 (7...Nb6 8.Bb3 ab5 9.ab5 Ra1 10.Ba1+=) 8.0-0+= c6 (8...b6 9.e4+=) 9.d4+/- e4 10.Ne5 0-0 11.Nd2 Qh6 (better 11...Be5!? 12.de5 Qg6+/-) 12.Ne4+- Bc7 (12...Bb4 13.Ng4 Qg6 14.Bd3+/-) 13.Ba3 Bd6?? (13...d6 14.b6! Bb6 15.Nd6 Nd5+-) 14.Nd6 cb5 (14...Qf6 15.Bf7 Rf7 16.Nef7 ab5 17.ab5 cb5 18.Qh5+-) 15.Nef7 Qf6 16.Nh6 (16.ab5 ab5 17.Nh6 Kh8 18.Ndf7 Rf7 19.Nf7 Kg8 20.Nh6 Kh8+-) 16...Kh8 17.Ndf7 Qf7 (17...Rf7 18.Nf7 Kg8 19.Be7 Qe7 20.ab5 d5 21.Bd5 Be6 22.Nh6 Kh8 23.Be6 Qe6+-) 18.Nf7 Kg8 19.Nh6 Kh8 20.Be7 Re8 21.Nf7 Kg8 22.Ng5 Kh8 (22...d5 23.Qh5 Re7 24.Qh7 Kf8 25.Qh8) 23.Qh5 g6 (23...bc4 24.Qe8) 24.Qh7 1-0. b4_player – opponent, gamecolony.com, 2007.

4.b5 a6 5.a4 Ne7 6.e4 =.

4.b5 c6 5.Nc3 Ne7 (better 5...Be7!?+=) 6.Ne4+/- Qf5?? (better 6...Qe6 7.Nd6 Qd6 8.Be5 Qg6+/-) 7.Nd6+- Kd8 8.Nf5 Nf5 9.Ne5 Rf8 10.e4 Nd6 11.Ba3 Ke7 12.Nc4 cb5 13.Nd6 Rd8 14.Qh5 g6 (14...Rg8 15.Qe5 Kd8 16.Nf7) 15.Qe5 Kf8 16.Nf5 Kg8 17.Qg7 1-0. GuestGPPJ – datalu, freechess.org, 2020.

4.b5 c6 5.c4 cb5 6.cb5+= Ne7 7.Nc3 (better 7.e4+=) 7...b6? (better 7...Bb4+=) 8.Ne4+- Qg6 9.Nd6 Qd6 10.Be5 Qc5 (10...Qh6 11.Rc1+-) 11.e3 (11.Qb3 f6 12.d4 Qd5 13.Qd5 Nd5+-) 11...d6 (better 11...f6 12.Bd4 Qf5+-) 12.Bg7 Rg8 13.Bb2 (13.Bd4 Qf5+-) 13...a6 14.a4 (14.Rc1 Qd5+-) 14...Bd7 (14...Qh5 15.Nd4 Qd1 16.Kd1 ab5 17.Nb5+-) 15.Nd4 (15.Bd4 Qc7+-) 15...Nf5 (15...Qd5 16.Qe2+-) 16.Qf3 d5 (16...Ra7+-) 17.Nf5 Bf5 18.Qf5 a5 (18...Qd6+-) 19.Rc1 Qb4 20.Rc8 Ke7 21.Bf6 Kd6 22.Qe5 Kd7 23.Rc7 1-0. katchum (2495) - bvboucher (2040), net-chess.com, 2005.

4.b5 c6 5.c4 Qe7 6.Qc2 =.

4.b5 c6 5.e3 cb5 6.Bb5 (6.Nc3 Nc6+=) 6...a6 7.Ba4 (7.Bc4 Ne7+=) 7...Qe7 (7...b5 8.Bb3 Bb7 9.d4 Bf3 10.Qf3 Qf3 11.gf3=) 8.0-0+= e4 (8...Nf6 9.Nh4 g6 10.c4+=) 9.Bg7 (9.Nd4 Nh6 10.f4 0-0+=) 9...ef3 10.Qf3 (10.g3 Be5 11.Bh8 Bh8+=) 10...Qh4 11.Bd7 (11.Qh3 Qa4 12.c3 Qc2 13.Bh8 Nc6=) 11...Bd7 (11...Nd7 12.g3 Ne5 13.Be5 Be5 14.gh4 Ba1+/-) 12.g3+/- Qh3 (12...Qc4 13.Qb7 Qg4 14.Bh8 Bc6=) 13.Qg2 (13.Bh8 Nc6+/-) 13...Nc6 (13...Be5! 14.Be5 f6=) 14.Bh8+= Be5 (14...Qh5!?+=) 15.Be5+/- Ne5 16.f4 (16.Na3 Qh5 17.f4 Ng4+/-) 16...Qg2 17.Kg2 Bc6 18.Kf2 (18.Kh3 Bd7 19.f5 Nf6+/-) 18...Ng4 19.Kg1 Rc8 (19...b5 20.h3 N4f6 21.d3+/-) 20.h3 N4f6 21.d3 (21.g4 Ne7+/-) 21...Nd5 (21...Bd7 22.g4 Rc2 23.Na3=) 22.e4 (22.Na3 Bd7 23.c4 Nb4+/-) 22...Ne3 23.Rf2 Bd7 24.c4 Bh3 25.Rh2 (25.Nc3 Rd8 26.Nd5 Nd5 27.cd5 Bd7+/-) 25...Bg4 (25...Bf1 26.d4 A) 26...Rc4? 27.Nd2+- (27.Rh7? Rc1 28.Kf2 Nc2-+); B) 26...Bc4=) 26.Nc3+/- (26.Rh7? Nc2-+) 26...h5 (26...Rd8 27.Nd5 (worse 27.Rh7 Rd3 28.Rh8 Rc3 29.Rg8 Ke7=) 27...Nd5 28.ed5+=) 27.Kf2 (27.Re1 Nc4 28.dc4 Rc4+-) 27...Nc2 (27...Nc4 28.dc4 Rc4 29.Nd5 Re4 30.Re1 Re1 31.Ke1+/-) 28.Rb1 (28.Rc1 Nb4 29.Ke3 Nc6+-) 28...Rc7 (better 28...b5!? 29.Nd5 bc4 30.dc4 Na3+=) 29.Nd5+- Rc5? (29...Rd7 30.Rb2 Nd4 31.Ke3+-) 30.Ne3 (better 30.Rb2 Nd4 31.Rb7+-) 30...Ne3 31.Ke3 b5 (31...Rc7+-) 32.Kd4 White prepares e5 32...Rc6 (32...Rc8 33.cb5 ab5 34.Rb5 Rd8 35.Ke3+-) 33.cb5 Rd6 34.Ke3 f5 (34...ab5 35.Rb5 Nf6 36.Rhb2+-) 35.e5 (35.b6 Rd8+-) 35...Rb6 36.Rhb2 Rb5 (36...Ne7 37.a4+-) 37.Rb5 ab5 38.Rb5 Ne7 39.a4 (39.d4!? Bd1 40.d5 Ba4 41.Rb8 Kd7 42.Rb7 Kd8+-) 39...Kd7 40.Rb7 Ke6 (40...Kd8 41.e6+-) 41.a5 Nd5 (41...Bh3 42.Kf2 Nc6+-) 42.Kf2 Nf4 (42...Nc3 43.a6 Nd1 44.Kg2 Ne3 45.Kg1 Bf3+-) 43.gf4 h4 44.a6 h3 45.Kg3 (45.a7 Bf3 46.Kf3 h2 47.Rb1 h1Q 48.Rh1 Kd7 49.a8Q Kc7 50.Rc1 Kb6 51.Qb8 Ka5 52.Ra1) 45...Be2 46.a7 h2 47.Kh2 (47.a8Q h1N 48.Kh4 Kd5 49.Rd7 Kc5 50.Qa5 Kc6 51.Rc7) 47...Bf3+- 48.a8Q Bb7 49.Qb7 ½-½. Trkn – Billy, itsyourturn.com, 2000.

4.b5 Ne7 5.d3 a6 6.c4 ab5 7.cb5 c6 8.Qb3 Ra5 9.Nc3 Bc7 (better 9...Qg6!?=) 10.b6 Bd6 11.Nd2 (11.Ne4 Qh6 12.Qc3+/-) 11...Na6? (better 11...Nf5+=) 12.Nce4+- Qg6 13.Nd6 Qd6 14.Nc4 Qd5? (14...Qc5 15.Be5 Nf5 16.d4+- (16.Na5 Qe5 17.Rc1 Qa5 18.Qc3 Qb6=+)) 15.Na5 (better 15.e4!? Qc5 16.Be5 0-0+-) 15...Qa5 16.Bc3 Qc5 17.e4 0-0 18.Rd1 d6 19.d4 ed4 20.Bd4 Qa5 21.Bc3 Qc5 22.Ba6 Be6 (22...ba6 23.Bd4 Qg5 24.Qg3 Qg3 25.hg3+-) 23.Qb4 Qg5 (23...ba6 24.Qc5 dc5 25.Be5+-) 24.Bf1 c5 25.Qb2 (25.Qa3 Nc8+-) 25...Rd8 26.g3 (26.Qa3 Qg6 27.f3 Qg5+-) 26...Qg4 (26...d5 27.f4 Qh6 28.ed5+-) 27.Bg2 Rd7 28.0-0 f6 29.a4 Bc4 30.Rfe1 h6 31.Bd2 Nc6 32.Be3 Ne5 33.Qc3 Bf7 34.a5 g5 (34...Nf3 35.Bf3 Qf3 36.Qa3 Qe4 37.Bh6+-) 35.Rb1 Bc4 (35...Bg6 36.f4 Nf3 37.Bf3 Qf3 38.f5 Bf5 39.ef5 Qf5 40.a6+-) 36.f4 gf4 37.Bf4 Ba6 38.Be5 (better 38.Bh6!? Rh7 39.Bf4 Kf8+-) 38...fe5 39.Qf3 (39.Rbd1 Kf8+-) 39...Qe6 (39...Qf3 40.Bf3 Bd3 41.Rbd1+-) 40.Bf1 Rf7 41.Qd1 Qa2 (41...c4+-) 42.Ba6 Qf2 43.Kh1 ba6 (43...Kh7+-) 44.Rf1 (44.Rf1 Qf1 45.Qf1 Rf1 46.Rf1 Kh7 47.b7 Kg8 48.b8Q Kg7 49.Qf8 Kh7 50.Rf6 d5 51.Rh6; 44.Qd6?! Qf3 45.Kg1 Qf2 46.Kh1 Qf3 47.Kg1 Qf2 48.Kh1=) 1-0. Blauhut,Holger - Szabo,Michael, corr SOK-89-49, 1989.

4.b5 Ne7 5.e4 0-0 6.Bd3 (6.d4 ed4 7.Bd4 Qe6=) 6...a6 7.0-0 (7.Nc3 b6=) 7...ab5=+ 8.Bb5 c6 (8...Nbc6 9.c3=) 9.Bc4 (9.d4 Ng6 (worse 9...cb5 10.de5 Be5 11.Be5+/-) 10.Be2 Bc7=) 9...b5 (9...Bc7 10.d4 d6 11.a4=) 10.Bd3 (10.d4 Ng6 (worse 10...bc4 11.de5 Be5 12.Be5+/-) 11.Bd3 ed4 12.Bd4 Ne5=) 10...Ra4 (10...Bc7 11.Re1=+) 11.Nc3 (11.c4 Ba6=) 11...Ra5= 12.a4 b4 13.Ne2 Qe6 (13...Ng6 14.c3=) 14.Ng3 (14.Nc1 Bc7+=) 14...f6 (14...Ng6 15.Be2=) 15.c3 Kf7 (15...Na6 16.Be2=) 16.cb4 (16.Bc2 Ba6 17.d3 Bc5+/-) 16...Bb4 17.Be5 (17.Rb1!? Ba6 18.Qc2+=) 17...Re5=+ 18.Rb1 Bd6 19.Ne5 Qe5 (19...Be5 20.Ne2=) 20.Qb3 (20.Bc4 Ke8+=) 20...Kg6 (20...Ke8 21.Bc4=) 21.Rbe1 (21.Bc2 Bc7+=) 21...Na6= 22.h4 (22.Bc4!?=) 22...Nc5=+ 23.h5 (23.Qc2 Kh6=+) 23...Kg5 (better 23...Kh6 24.Qc2 Qd4-/+) 24.Qc4? (better 24.Qc2 Qd4 25.Re3 Qa4 26.e5 Qc2 27.f4 (27.Bc2? fe5 28.Bh7 Nd5-+) 27...Kh6 28.Bc2 fe5 29.fe5 Rf1 30.Kf1-+) 24...Ba6-+ 25.f4 Qf4 26.Rf4 Bc4 27.Rf5 (27.e5 Kf4 (27...Bd3?! 28.ed6 Nf5 29.Rf3-+) 28.ed6 Nd3 (28...Kg3?! 29.de7 Re8 30.Bc4=) 29.de7 Re8-+) 27...Nf5 28.Nf5 Nd3 29.Nd6 Ne1 30.Nc4 Kh5 (30...Nd3 31.Kf1-+) 31.Kf2 d5 (31...Nc2 32.Nb6-+) 32.g4 (32.ed5 cd5 33.Nb6 Nc2-+) 32...Kg5 33.ed5 cd5 34.Nb2 (34.Nb6 Nd3 35.Ke2 Nf4 36.Kf3 Rb8-+) 34...Re8 35.a5 (35.Nd1 Nd3 36.Kf3 Ne5 37.Kg3 Ng4-+) 35...Kg4 36.a6 Nf3 37.Nd1 (37.Nd3 Nd2 38.Nb4 d4-+) 37...d4 38.Kg2 Kf4 (38...Nd2 39.Nf2 Kh4 40.a7-+) 39.Nf2 Nd2 40.Nd3 Kf5 (better 40...Ke4 41.Nc5 Kd5-+) 41.Nc5 (41.Nb4 h5-+) 41...h5 (41...Re2 42.Kg1 Kf4 43.Nd3 Kg3 44.a7 Rg2 45.Kh1 Nf3 46.a8Q Rh2) 42.Nd7 Re6 (42...Re2 43.Kg1 Kf4 44.Nc5 Kg3 45.Nd3 Rg2 46.Kh1 Nf3 47.a7 Rh2) 43.Nb8 Re2 44.Kg3 (44.Kg1 Kg4 45.a7 Kg3 46.a8Q Re1) 44...Ne4 (44...h4 45.Kh4 Nf1 46.a7 Rh2) 45.Kh3 d3 (45...g5 46.a7 g4 47.Kh4 Rh2) 46.a7 (46.Nc6 Kf4 47.a7 Ng5 48.Kh4 Rh2) 46...d2 (46...g5 47.a8Q g4 48.Kh4 Rh2) 47.a8Q Re3 (47...d1Q 48.Qd5 Qd5 49.Na6 Qd3 50.Kh4 Rh2) 48.Kg2 (48.Kh2 d1Q 49.Qa5 Kg6 50.Qd2 Qd2 51.Kg1 Re1) 48...Rg3 49.Kh2 (49.Kh1 d1Q 50.Kh2 Qg1) 49...d1Q 50.Qa5 (50.Qe4 Ke4 51.Kg3 Qg1 52.Kh3 Kf3 53.Nc6 Qg3) 50...Kg4 51.Qe1 (51.Qh5 Kh5 52.Nc6 Qg1) 51...Qe1 52.Nc6 Qg1 0-1. Dappet - PK83, 2nd Dutch CC (Wageningen NED), 1982.

4.b5 h6 5.e3 Ne7 6.Be2 Ng6 (6...a6 7.a4+=) 7.c4 (7.Nc3 a6+=) 7...Bc5 (7...a6 8.Nc3+=) 8.0-0 d6 9.Nc3 Ne7? (9...e4 10.Nd5 Qb2 11.Nc7 Kd8 12.Na8 ef3 13.Bf3 Bb4+/-) 10.Ne4+- Qg6 11.Nc5 dc5 12.Ne5 Qe6 13.Bg4 Qf6 14.Bh5 0-0 15.Ng6 Qb2 16.Ne7 Kh8 17.Nc8 Rc8 18.Qf3 Qf6 19.Qb7 (worse 19.Bf7 Qf3 20.gf3 Rd8+-) 19...Nd7 20.Bg4 Rab8 (20...Rcb8 21.Qc7 Ne5 22.Be2+-) 21.Qa7 (21.Bd7?! Rb7 22.Bc8 Rb8+=) 21...Rd8 (21...Ra8 22.Qb7 Rcb8 23.Qc7 Ne5+-) 22.Bd7 Qb6 23.Qb6 cb6 (23...Rb6?? 24.Bc6+-) 24.Bc6 Rd2 25.a4 Rc2 (25...g5 26.Rfd1 Rbd8 27.Rd2 Rd2 28.a5 ba5 29.b6+-) 26.Bd5 Rb2 27.a5 f6 (27...ba5 28.Ra5 f6+-) 28.a6 (28.a6 Rf8 29.a7+-) 1-0. DEFFM – GuestZHGD, freechess.org, 2018.

4.b5 h6 5.e4 b6 (5...Ne7!?+/-) 6.d4+- Bb7?? (better 6...ed4 7.Bd4 Qe7 8.Bg7 Rh7+-) 7.de5 Be5 (7...Bb4 8.c3 Qf4 9.cb4 Qe4 10.Be2 Qb4 11.Bc3+-) 8.Be5 Qg6 (8...Qe6 9.Bg7 Rh7 10.Bb2 Be4 11.Nd4+-) 9.Bb2 (9.Bc7!? Nf6 10.Qd6 Ne4 11.Qe5 Kf8+-) 9...Be4 (9...Nf6 10.Bd3 Be4 11.Nh4+-) 10.Ne5 Bc2 (10...Qe6 11.Nd2 Bd5+-) 11.Ng6 (11.Ng6 Bd1 12.Nh8+-) 1-0. DEFFM – GuestYWHZ, freechess.org, 2019.

4.c4 Bb4 5.Be5 Qc6?? (better 5...Qg6 6.Bc7 Qc6+/-) 6.Bg7+- Qc4 7.e3 Qg4 (7...Qe6 8.Bh8 Nc6 9.a3+-) 8.Bh8 Nc6 9.Bc3 (9.Nc3 Nge7+-) 9...d5 (9...d6 10.d4+-) 10.Bb4 (10.h3 Qe6+-) 10...Nb4 (10...Qb4 11.Nc3+-) 11.Nc3 Bf5 12.Nd4 (12.h3 Qg6 13.Qa4 Nc6+-) 12...Ne7 (12...c5 13.Nf5 Qf5 14.Rc1+-) 13.Qg4 Bg4 14.a3 Na6 15.Be2 (15.h3 Bh5+-) 15...Be6 (15...Be2 16.Ke2 Kd7 17.Rab1+-) 16.Ne6 Nb8 (16...fe6 17.Rb1 0-0-0+-) 17.Nc7 Kd8 18.Na8 Nbc6 19.Nb5 a6 20.Nd6 Na5 21.Nf7 Kc8 22.Rc1 Nac6 23.Nb6 Kc7 24.Na4 (24.Rb1 d4+-) 24...b5 25.Nc5 Kb6 26.0-0 (26.h4 d4+-) 26...h5 27.Bh5 Nf5 28.d4 (28.Nd7 Kb7+-) 28...Ka5 Black intends b4 29.Bg6 (29.Na6 Kb6+-) 29...Nce7 30.Bf5 Nf5 31.g4 Ne7 32.h4 b4 33.ab4 Kb4 34.Nd6 (34.Rb1 Ka3 35.Rb8 Ka2 36.Nd3 a5 37.Rb2 Ka3 38.Ra1) 34...a5 (34...Nc6 35.Rb1 Ka3 36.Ra1 Kb2 37.Na4 Kb3 38.Rfb1 Kc2 39.Rb2 Kd3 40.Ra3) 35.Rb1 (35.Rc2 a4 36.Rb1 Ka3 37.Nb5) 35...Kc3 36.Rfc1 (36.Na4 Kd3 37.Rb2 Nc6 38.Rd1) 36...Kd2 37.Nb3 Ke2 38.Na5 (38.Kg2 Kd3 39.Rb2 a4 40.Nc5) 38...Kf3+- 39.Nc6 Nc6 40.g5 Kg4 41.g6 (41.Rc6 Kh3 42.g6 Kh4 43.g7 Kg4 44.g8Q Kf3 45.Qg2 Ke2 46.Qg4 Kd3 47.Qd1) 41...Kh4 42.g7 (42.Rc6 Kg4 43.g7 Kg5 44.g8Q Kh5 45.Kg2 Kh4 46.Rh1) 42...Ne7 43.Nf5! Nf5 (43...Kh5 44.Ne7 Kg4 45.g8Q Kf3 46.Qd5 Kg4 47.Qf5 Kh4 48.Ng6) 44.g8Q Kh3 (44...Kh5 45.f4 Ng7 46.Qg7 Kh4 47.Kh2 Kh5 48.Qg5) 45.Qh7 (45.Rc7 Ng7 46.Rg7 Kh4 47.Qh7) 45...Kg4 46.Qg6 Kf3 (46...Kh4 47.Kg2 Ne3 48.Kf3 Nc4 49.Rh1) 47.Qf5 Ke2 48.Rb2 (48.Rc2) 1-0. Trkn – Leo, itsyourturn.com, 2000.

4.c4 Bb4 5.Be5 Qg6 6.Bc7 Bd6 7.Bd6 Qd6 8.Nc3 Nf6 9.e4 0-0 (9...Qe7 10.d4+/-) 10.e5+- Qd2?? (better 10...Qe6+-) 11.Qd2 (11.Qd2 Ne8 12.Nd5+-) 1-0. Janek – Tundja, internet, 2017.

4.c4 b6 5.Qc2 Nc6 6.c5 (better 6.b5 Na5 7.d4+/-) 6...Nb4? (better 6...bc5 7.bc5 Bf8 8.Ne5 Ne5+=) 7.Qe4+- Bc5 (7...Nc6 8.cd6 cd6 9.d4+-) 8.Qa8 Ne7 9.Be5 Qg6 10.Na3 Nbc6 11.Bb2 (11.Nb5 0-0 12.Na7 Ba6+/-) 11...0-0+/- 12.e3 Ba6 13.Qf8 Kf8 14.Ba6 Ba3 15.Ba3 Qg2 16.Ke2 Nb8 (16...Qg4!? 17.Bb7 d6+/-) 17.Rag1 Qh3 18.Bc4 d6 (18...Qh6 19.Be7 Ke7 20.Rg4+-) 19.Bf7! Qf5 (19...Kf7 20.Ng5 Double attack) 20.Bc4 g6 21.Ng5 h6 (21...Ke8+-) 22.Ne6 (22.Ne6 Kf7 23.Nd4 d5 24.Nf5 gf5 25.Bb3+-) 1-0. DEFFM – DoktorM, freechess.org, 2018.

4.c4 b6 5.e3 Nc6 6.b5 Nce7 7.g3 Bb7 8.Bg2 c6 (8...a6 9.Nc3=) 9.Ng1 (9.d4 Ng6+=) 9...Nf5 10.Ne2 Bc5 (10...Qe6 11.Qb3=) 11.0-0 a6 12.a4 (12.f4 Qe6 13.fe5 Nge7+/-) 12...Nge7 13.d4 Bd6 (13...ed4!? 14.ed4 Bb4+=) 14.Nd2+/- ab5 15.ab5 Ra1 (15...ed4!? 16.Ne4 Qh6 17.Nd6 Nd6 18.Qd4 0-0+/-) 16.Qa1+- Qe6 (16...Bb8 17.de5 Qg6 18.Qa3+-) 17.Qa7 Bb4? (better is 17...Bc8 18.c5 bc5 19.dc5 cb5 20.cd6 Nd6+-) 18.Qb7 (18.de5?! Bd2 19.Qb7 0-0+-; 18.Qb6?! Bd2 19.Qb7 0-0+-) 18...0-0 19.Bc3 Bc3 20.Nc3 ed4 21.ed4 Nd4 22.bc6 (22.Qb6 Nef5+-) 22...Nec6 23.Bd5 Ne2 (23...Qe7 24.Bc6 Nc6 25.Nd5+-) 24.Ne2 Qe2 25.Nf3 Rd8 (25...Nb4 26.Re1 Qd3 27.Qd7 Nd5 28.Qd5 (28.cd5?! Qf3 29.d6 Qd5+/-) 28...Qd5 29.cd5+-) 26.Qb6 (better is 26.Re1 Qe6 27.Be6 fe6+-) 26...Qe8 (26...Qe7 27.Re1 Qf6 28.Bc6 dc6 29.Ne5+-) 27.Re1 Ne7 (27...Qf8 28.Ng5 Rb8+-) 28.Ng5 Rb8 (28...Nd5 29.Re8 Re8 30.cd5+-) 29.Qd6 (better is 29.Re7 Qf8 30.Qc7+-) 29...Rb2 (29...Nd5 30.Re8 Re8 31.Qd5 Rf8+-) 30.Bf7 (30.Re7 Qe7 31.Qe7 Rb1 32.Kg2 Rb8 33.Qf7 Kh8 34.Qf5 Rb5 35.Qh7) 30...Qf7 31.Nf7 Kf7 32.Re7 Kf8 33.Rd7 Kg8 34.Qe6 Kf8 35.Qf7 1–0. Hal1958 – Concrete_Pluto, playchess.de, 2002.

4.c4 b6 5.e3 Qe7 6.d4 Bb4=+ 7.Nbd2 d6?? 8.Be2?? ed4?? 9.Nd4?? c5 10.Qa4 Bd7=+ 11.Qb3?? Nf6?? 12.Nb5 Bb5–/+ 13.cb5 Bd2 14.Kd2 Ne4 15.Ke1=+ 0-0 16.Bf3 Re8 17.Ke2 Nd7 18.Rhd1 Rac8 19.Qd5 Qh4 20.Be4 Re4=+ 21.h3 Re6–/+ 22.Qb7 Qd8 23.Qa7 Ne5 24.Qa4 Qg5 25.Be5 Re5 26.Kf1 Qf6 27.Qa6 Qd8?? 28.Rd6!+- Qd6 29.Qc8 Qf8 30.Qc6 Re6 31.Qc7 h6 ½–½. gtate (1900) – octopus (1940), net–chess.com, 2004.

4.c4 c5? 5.b5 b6 6.g3 Bb7 7.Bg2 Ne7 8.0-0 h5 (8...a6 9.Na3+=) 9.h4 g6 (9...a6 10.Nc3+=) 10.e3 (10.Ne5 Bg2 11.Nd3 Qe6 12.Kg2 Rg8+/-) 10...Qg7 (10...0-0 11.Ng5 Bg2 12.Kg2+/-) 11.d4 (11.Ne5 Be5 12.Be5 Qe5 13.Bb7 Qa1+-) 11...f6? (better 11...cd4!? 12.ed4 e4+/-) 12.de5+- Be5 13.Ne5 Bg2 14.Kg2 fe5 15.Qf3 e4 16.Qe2 (16.Bg7?! ef3 17.Kf3 Rh7+/-; worse 16.Qe4 Qb2 17.Qa8 0-0+=) 16...Qf8 17.Bh8 Qh8 18.Nd2 (18.Qc2 a6 19.Nc3 Qe5 20.Qe4 Qe4 21.Ne4 ab5 22.Nd6 Kd8 23.cb5 Nd5+-) 18...Qe5 19.f3 Nf5 (19...a6 20.ba6 Nf5 21.Ne4 Na6 22.a3+-) 20.Ne4 d6 21.Qd3 Nd7 22.Rad1 0-0-0 (22...d5 23.cd5 c4+-) 23.Nd6 Nd6 24.Qd6 Qd6 25.Rd6 Ne5 26.Rd8 Kd8 27.Rc1 Ke7 28.Rc3 Ke6 29.e4 Nd7 30.f4 Nf6 31.Kf3 Ng4 (31...Ne8 32.e5+-) 32.Ra3 Nh2 33.Ke2 Ng4 34.Ra7 Nf6 35.Kf3 Nd7 36.g4 (36.g4 Ne5 37.fe5 Ke5 38.gh5 gh5 39.Re7 Kd4 40.Rd7 Kc4 41.e5+-; 36.f5 gf5 37.ef5 Ke7 38.Rd7 Kd7+-) 1-0. Jordache - Grund,Karl, corr, 1977.

4.c4 c5? 5.b5 Qe6+= 6.e4 Nf6 7.Ng5 Qg4 (7...Qe7 8.Nc3=) 8.Qg4+/- Ng4 9.Be2 Nf6 (9...Nh6 10.Nc3+/-) 10.f4! ef4? (better 10...h6!? 11.Nf7! Kf7 12.fe5 Be5 13.Be5 Re8 14.Bf6 Kf6 15.Rf1 Ke7+-) 11.e5+- Be7 (11...Be5 12.Be5 d5 13.Bf4+-) 12.ef6 Bf6 (12...gf6 13.0-0+-) 13.Bf6 gf6 14.Ne4 f5 (14...Kd8 15.Nbc3 Re8 16.Nf6+-) 15.Nc5 d6 16.Nd3 0-0 (16...Kd8 17.Nf4 Re8 18.Nc3+-) 17.0-0 Nd7 18.Nf4 Ne5 (18...Nf6 19.Bf3+-) 19.d4 (19.Nc3 Ng6+-) 19...Ng6 20.Nd5 a6 (20...Be6 21.Nbc3+-) 21.Nb6 (21.b6 Be6 22.Nbc3 Rac8+-) 21...Rb8 22.Nc3 Nf4 (22...Be6+-) 23.Rf4 Re8 24.Nc8 (24.Re1 Kg7+-) 24...Rbc8 25.Rf5 1-0. Trkn - Finn E, itsyourturn.com, 2001.

4.c4 c5? 5.bc5!? Bc5 6.Be5+/-.

4.c4 Nc6 5.a3 a6 6.e3 Nge7?? 7.c5+- 0-0 (7...Bc5 8.bc5 d6 9.cd6 cd6 10.Qb3+-) 8.cd6 cd6 9.Qb3 (9.Nc3 d5+-) 9...b5 (9...d5 10.Nc3+-) 10.Bd3 a5 (10...d5 11.Nc3 Bb7 12.0-0+- (12.Nd5?! Nd5 13.Qd5 Nb4+-)) 11.Nc3 a4 (11...ab4 12.ab4 Ra1 13.Ba1+-) 12.Qc2 Qe6 (12...Qh6 13.Bb5 (worse 13.Nb5 Ba6 14.Nc7 Bd3 15.Qd3 Rab8+-) 13...d5 14.0-0+-) 13.Bh7 Kh8 14.Bd3 d5 (14...Ba6 15.Bb5 (worse 15.Nb5 e4 16.Bc4 Qg6+-) 15...Bb5 16.Nb5+-) 15.Nb5 e4 (15...Qf6 16.Rc1 Bb7 17.h4+-) 16.Nc7 Qg6 17.Na8 ed3 18.Qd1 Qg2 (18...f6 19.0-0 d6+-) 19.Rg1 Qh3 20.Bg7 Kg8 21.b5 Na7 22.Nc7 Bb7 23.Bf6 Ng6 (23...Qg4 24.Rg4 Ng6 25.Ne5 Nb5 26.Ng6 fg6 27.Rg6 Kf7 28.Qh5 Nc7 29.Rh6 Ke6 30.Bd8 Rf6 31.Rf6) 24.Nh4 Qh2 (24...Nc6 25.Qh5 Qg3 26.Rg3 Rc8 27.Qh8) 25.Qg4 Qc7 (25...Re8 26.Ng6 Re3 27.fe3 Qe2 28.Qe2 fg6 29.Qh5 d4 30.Qg6 Kf8 31.Qg7) 26.Ng6 Rc8 (26...Qc1 27.Rc1 Nb5 28.Nf8 Kf8 29.Qg8) 27.Nf8! Kf8 (27...Kf8 28.Qg8 Mate attack) 28.Qg8 1–0. Pierre – Mirrimond, internet, 2020.

4.c4 Nc6 5.b5 Nd4 (5...Nd8 6.Qc2 Ne6 (6...Qe7 7.Nc3 Nf6 8.e3 a6 9.Be2 0-0 10.Ng5 c6+=) 7.Nc3 Qh6 8.Nd5 f6 9.e3 Qg6 10.Qg6 hg6+=; 5...Nce7 A) 6.e3 b6 (6...Qf5 7.d4 Bb4 8.Bc3 Bc3 9.Nc3 e4 10.Nd2 Nf6+=) 7.Bd3 Bb7 8.Qc2 Rd8 9.Be4 Be4 10.Qe4 Qe6=; B) 6.Qc2 Ng6 7.Nc3 Qe6 8.e3 Nf6 9.Be2 0-0 10.0-0 Re8+=) 6.Nc3 (6.Nd4 ed4 7.e3 Bc5 8.Bd3 Nh6 9.0-0 d6 10.Na3 0-0+=; 6.e3 Nf3 7.Qf3 Qg6 8.Qg3 Ne7 9.Qg6 Ng6 10.Be2 0-0+=) 6...Nf3 (6...Qf5 7.Qb1 Qe6 8.Ng5 Qe7 9.e3 Ne6 10.Nge4 Nf6+=; 6...Qe6 7.e3 Nf3 8.Qf3 Nf6 9.Bd3 0-0 10.0-0 c6+=) 7.gf3 Nh6 (7...Qg6 8.Ne4 Be7 9.Be5+= d6 10.Bd4 Nf6=; 7...Qe6 8.Rg1 g6 9.Qb3 Nf6 10.e3 b6=) 8.Ne4 (8.Qc2 Qe6 9.Rg1 0-0 10.Nd5 f6+=) 8...Qg6 (8...Qe6 9.Nd6 Qd6 10.Rg1 0-0+=) 9.c5 (9.h4 0-0 (9...b6+/- 10.Nd6 Qd6+/-) 10.Qc2 a6=; 9.Nd6 Qd6 10.Rg1 0-0+=) 9...Be7+= 10.Be5 d6 11.cd6 cd6 12.Bf4 0-0 13.Rc1 f5 14.Ng3 d5 (14...Be6 15.Rg1 Rac8 16.e3+=) 15.Rg1 Bh4 (15...Nf7!?+/-) 16.e3+- d4 (better 16...Nf7+-) 17.Bc4 Kh8 18.Ne2 de3?? (18...Qb6 19.Be5 Bf6 20.Bd4 Bd4 21.Nd4 f4+-) 19.Rg6 (19.Rg6 ef2 20.Kf1 hg6 21.Bg3+-) 1-0. ante - 3game, internet, 2011.

4.c4 Nc6 5.c5 Be7 6.b5 Nd4 7.e3 Nf3 8.Qf3 Qf3 9.gf3 f6 10.Rg1 Bc5 11.Rg7 Nh6 (11...Ne7 12.Nc3 d5 13.Re7 Be7 14.Nd5=) 12.Nc3+/- c6 13.Bd3 cb5 (13...Be7!?+/-) 14.Ke2+- (worse is 14.Bb5 Nf5 15.Rg1 Kf7+/-) 14...d6 15.Nd5 (15.Bb5?! Kf8 16.Rgg1 Kf7+/-) 15...Kf8 16.Rc7 Nf5? (better is 16...Bb6 17.Nb6 ab6 18.Bb5 Be6+-) 17.Rg1 Nh4 (17...Nh6 18.Nf6 Bb6+-) 18.Rgg7 Rg8 (18...Be6 19.Nf6 Rc8 20.Rb7 h6+-) 19.Rcf7 Ke8 20.Nf6 Kd8 21.Rg8 1–0. pierred – anony, internet, 2014.

4.c4 Nc6 5.c5 Bf8 6.Qa4 =.

4.c4 Nc6 5.c5 Bf8 6.e4 =.

4.c4 Qf4 5.e3 Qe4 6.Qb3 Nc6 7.Bd3 (7.c5!? Be7 8.b5+/-) 7...Qg4+= 8.0-0 e4? (8...Nb4!? 9.Be5 Nd3 10.Bd6 Nf2+/-) 9.Be4! Nb4 (9...Qe4 10.Bg7 Combination) 10.Bd5 (10.d3!? Nf6 11.h3+/-) 10...Nh6 11.c5 (11.Ba3!? a5 12.Bb4 ab4 13.d4+/-) 11...Bc5= 12.Ne5 Qf5 13.e4 Qf4 (better is 13...Qh5!? 14.g4 Qh4 15.Bf7 Kd8=) 14.g3+/- Qg5 15.Bf7 Kd8 16.d4 Be7 17.Nc3 Qd2 (17...Rf8 18.Rad1+/-) 18.Rad1+- Qg5 (better is 18...Qc2 19.Bc1 Qb3 20.Bb3 Rf8+-) 19.a3 (19.a3 Nc6 20.Bc1+-) 1–0. Fournier,Frederic – COMP ChessChallenger, Partie Libre, 1996.

4.c4 Qf4 5.e3 Qe4 6.Nc3 Qg4 7.c5 Qb4 8.cd6 cd6 9.Nb5 Kd8 10.Ba3 Qg4 11.Nd6 Nh6 12.Ne5 Qe6 13.Qh5 Kc7 14.Nef7 Nf7 15.Nf7 Rd8 16.Qc5 Nc6 17.Qd6 Qd6 18.Bd6 Kb6 19.Rb1 Ka5 20.Rb5 Ka4 21.Rb3 Nb4 22.Rb4 Ka5 23.Rb3 b5 24.Bc7 Ka6 25.Nd8 h6 26.Bb5# 1–0. GLChess210 – ChessterfieldCLi4, computer chess game, 2000.

4.c4 Qf4 5.e3 Qf5 6.g4! Qg4 7.Rg1 Qh5 8.Rg7 Bb4?? (8...Nc6 9.Nc3 Qh6+-) 9.Rg5 Qh6 10.Re5 (10.Be5?! f6 11.Bd4 fg5 12.Bh8 Nf6+=) 10...Ne7 11.Rb5 Bd2 (11...Rg8 12.Rb4 Na6 13.Rb5+-) 12.Nbd2 (worse 12.Kd2 Rg8 13.Nc3 a6+-) 12...Rg8 (12...Rf8 13.Be5 Na6 14.Bf4+-) 13.Ne4 Rg6 14.Ne5 Re6 (14...d6 15.Ng6 hg6 16.c5+-) 15.Ng4 Qg6 16.Qd4 Re4 (16...f6 17.Ngf6 Kd8+-) 17.Qh8 Qg8 18.Nf6 (18.Nf6 Kd8 19.Ng8 Ng6 20.Qf6 Ke8 21.Rf5 c5 22.Be5 d6 23.Qf7 Kd8 24.Bf6 Ne7 25.Be7 Kc7 26.Bd6 Kb6 27.Qc7 Ka6 28.Qc5 Re3 29.fe3 Bf5 30.Qb5) 1–0. Pierre – Waldorffy, internet, 2020.

4.c4 g5 5.c5 g4 6.cd6 gf3 7.dc7 fe2? (better 7...fg2 8.Bg2 Na6+-) 8.Qe2 (8.Be2?! Nc6+-) 8...Nc6 9.b5 Nge7 (9...Nb4 10.Qc4 a5 11.a3+-) 10.bc6 Nc6 11.Nc3 0-0 (11...Qe6 12.Qc4+-) 12.Nd5 Qe6 13.Qf3 f5 (13...d6+-) 14.Bc4 Kh8 (14...Rf7 15.Nb6! ab6 16.Be6 de6 17.Qd3+-) 15.Nb6! Qf6 (15...ab6 16.Be6 Discovered attack) 16.Na8 d6 17.Bd5 Bd7 (17...Nb4 18.0-0 Nd5 19.Qd5+-) 18.Qb3 Na5 19.Qb4 Nc6 20.Qb7 Na5 (20...Ne7 21.Bf3+-) 21.Qa6 Nc6 22.Bc6 Bc8 23.Qa7 d5 24.Bd5 Re8 25.Nb6 Qd6 26.Qa4 Rf8 27.Qa3 (better 27.f4 Be6 28.Be5 Qe5 29.fe5 Bd5 30.Nd5+-) 27...Qa3 28.Be5 Rf6 29.Bf6 1–0. Hidalgo – Gsbnba, internet, 2019.

4.d4 Bb4 5.c3=+ Bd6 6.e3 (6.Nbd2 ed4 7.Ne4 Qg6 8.Nd6 Qd6 (< 8...cd6 9.Nd4 a6 10.Qb1+=) 9.Qd4 Qd4 10.cd4 d5=+) 6...Nh6 (6...e4 7.Nfd2 Qg6 8.c4=+) 7.Bc4 (7.Nbd2 ed4 8.Ne4 Qe6 9.Nd6 A) < 9...cd6 10.Nd4 (10.cd4?! d5+=; < 10.Qd4 f6+=) 10...Qe5 11.Nb5+/-; B) 9...Qd6 10.cd4 Qb4 11.Qd2 Qd2 12.Kd2 d5=+) 7...Ng4 (7...e4 8.Nfd2 Qg6 9.Qc2–/+) 8.h3 (8.Nbd2=+) 8...e4 (better is 8...Nf2!? 9.Kf2 e4=+) 9.hg4+= ef3 10.Qf3 Qf3 11.gf3 0-0 (11...Be7 12.Bd3+=) 12.Nd2 (12.Bd3 h6+=) 12...c6 (12...Be7 13.Bd3 h6 14.c4+=) 13.Ne4 (13.Bd3 h6+/-) 13...Be7 14.Ke2?? (better is 14.d5+=) 14...d5–+ 15.Bd3 de4 16.Be4 h6 17.f4? (better is 17.c4!?–+) 17...Bg4 18.f3 Be6 19.Rag1 (19.Bd3 f5–+) 19...Ba2 20.Rh6 g6 21.f5 Kg7 22.Rgh1 Rg8 23.fg6 fg6 24.Rg6 Kf8 25.Kd3 Bf7 26.Rg8–/+ Bg8 27.c4 Nd7 28.Ra1 Nb6 29.Rc1 Rd8 30.c5 Na4 31.Ba3 Bd5 32.Bd5–/+ Rd5 33.Rc4 b5 34.cb6 Nb6 35.Be7 Ke7 36.Rc6 Kd7 37.Rh6= Kc7 38.e4 Rd6 39.Rh4 a5 40.e5 Rg6 41.f4 Rg3 42.Ke4 a4 43.f5 a3 44.Rh7 Kd8 45.Ra7+/- Nd7 46.f6 Ke8 47.f7! Ke7?? 48.Rd7! Kf8 49.e6 a2 50.Rd8 Ke7 51.f8Q Ke6 52.Rd6 (52.d5) 1–0. sandtheory – Seimi Agus Eion, ChessWorld.net, 2005.

4.d4 e4 5.Nfd2 e3 6.Ne4 Bb4 7.c3 –/+.

4.e3 c6 5.c4 Bc7 6.Be2 d6 7.0-0 Bg4 (7...Qg6 8.Nc3=) 8.d3 (8.Nc3 Bf5+=) 8...Bf3 (8...Na6 9.b5 Nc5 10.Nc3+=) 9.Bf3+= (9.gf3?! Ne7=) 9...Ne7 10.Nd2 0-0 11.a4 (11.Rc1 Qh4+=) 11...Nd7 (11...d5 12.Qc2 Qd6 13.c5=) 12.Rc1 White prepares the advance c5 12...Nb6 (12...Qe6 13.b5+=) 13.c5 (13.a5 Nd7+=) 13...dc5 14.bc5 Nd7 15.Ne4 Qg6 16.d4 (16.Rb1 Rfd8+=) 16...Rad8 (16...Rfe8 17.Qb3 Rab8 18.Rfd1=) 17.Qb3 b6 18.Nd6 (18.Ba3 Rfe8=) 18...Bd6 19.cd6 Qd6 20.de5 Ne5 21.Rfd1? (better 21.Be5 Qe5 22.Bc6 Nc6 23.Rc6=) 21...Nf3-/+ 22.gf3 Qg6 23.Kh1 c5?? (better 23...Qh5 24.e4 c5-/+) 24.Rg1+/- Qg1?? (better 24...Qh6 25.Rg7 Qg7 26.Bg7 Kg7 27.Rg1 Ng6 28.Qc3 f6+/-) 25.Rg1 g6 26.Qc3 (26.Qc3 f6 27.Qc4 Kg7 28.Qe6+-) 1-0. GuestFBZT – GuestKYNF, freechess.org, 2017.

4.e3 Qf5 5.c4 (5.Nc3 A) worse 5...Bb4 6.Nb5 Na6 7.Be5+/- (7.Ne5?! Nf6+=); B) 5...Nf6+=) 5...Nf6 (5...Nc6 6.b5 Nd8 7.Nc3+=) 6.c5+/- Be7 7.Ne5 0-0 8.Bd3 Qg5 9.0-0 d6 10.Nf3 (10.cd6 Bd6 11.f4 Qh4+/-) 10...Qg4 (10...Qh6 11.Qc2+=) 11.cd6+/- Bd6 (11...cd6 12.a3+/-) 12.Bf6 gf6 13.Nc3 Bb4? (better 13...Kh8+/-) 14.Nd5+- Bd6 (14...Nd7 15.h3 Qg7 16.Nb4 Ne5 17.Ne5 fe5+-) 15.Nf6 Kh8 16.Ng4 Bg4 17.Qc2 (better 17.Qa4 Bf3 18.Qh4 f5 19.Qd4 Kg8 20.Bc4 Rf7 21.gf3 Nd7+-) 17...Rg8 (17...Bf3 18.gf3 Nd7 19.Bh7+-) 18.Nh4 (better 18.Qb2 f6 19.Qf6 Rg7 20.Qd8 Rg8+-) 18...Be7 (18...Be5 19.Rab1 Bf6 20.Qc7+-) 19.Bh7 (better 19.Qb2!? Rg7 20.Qb7 Bh4 21.Qa8 Rg8+-) 19...Rg7 (19...Rd8 20.Bf5 Bh4 21.Bg4+-) 20.Bf5 (20.Qc7 Nd7 21.Bf5 Bh4 22.Bg4 Nb6+-) 20...Be2 (20...Bh4 21.Bg4 Na6 22.Be2+-) 21.Qc7 Nc6 22.Qb7 Rd8 23.Qc6 Bf1 24.Qh6 (better 24.Kf1 Kg8 25.Nf3 Kf8+-) 24...Kg8 25.Rf1 Bg5 26.Qh5 f6 27.Be6 Kf8 28.Nf5 Rc7 (28...Bh6 29.Qh6 Rd2 30.Qg7 Ke8 31.Qe7) 29.Qh8 1-0. mr (2260) – jomunoz, net-chess.com, 2008.

4.e4 a6 5.c4 Nc6= 6.c5 Be7 7.Bc4 d6 8.0-0 dc5 9.bc5 Bc5–/+ 10.Nc3 b5 11.Bb3 Be6 12.Nd5+= (12...Bd5 13.Bd5=). gtate (1960) – ioanmacea (1965), net–chess.com, 2006.

4.e4 b6 5.b5 Bb7 6.d4 Be4? (better 6...Qg6 7.de5 Bb4 8.Nbd2 a6+=) 7.de5+- (7.Ne5?! Ne7=) 7...Be5 (7...Qe6 8.ed6 Bf3 9.Be2 Be2 10.Qe2+-) 8.Ne5 Ne7 9.Nd2 Bb7 10.Bd3 d6 11.Ne4 Qh6 (11...Qe6 12.Bc4 d5 13.Ng5+-) 12.Ng4 Be4 (12...Qe6 13.0-0 f5 14.Bg7 fe4 15.Nf6 Kd8 16.Bh8 ed3+-) 13.Nh6 Bd3 14.Qd3 gh6 15.Bh8 Nd7 16.Qh7 0-0-0 17.Bd4 Re8 18.Qf7 h5 19.Qe8 (19.Qe8 Kb7 20.Qd7+-) 1-0. pierre – opponent, chesshere.com, 2008.

4.e4 Nc6 5.a3 Nd4 6.Nd4 ed4 7.g3 c5 8.b5 b6 9.Bg2+= Bb7 10.0-0 0-0-0 11.f4 Bc7 12.a4 Qe7 13.Na3 Be4 14.Re1+- d5 15.d3 Qd6? 16.de4+- Re8 17.ed5 Re1 18.Qe1 Nf6 19.Nc4 Qd8 20.a5 ba5 21.Na5 Ba5 22.Ra5 Nd5 23.Ra7 Qb6 24.Ra8 (24...Kd7 25.Bh3 Kc7 26.Qe5 Qd6 27.Ra7 Kb8 28.Qd6 Ka7 29.Qc5 Ka8 30.Bd4 Nb6 31.Qb6 Re8 32.Qa7#) 1–0. kolokwium – chsen, internet, 2006.

4.e4 Ne7 5.a3 =.

4.e4 Ne7 5.Bc4 0-0 6.0-0 (6.b5 a6 7.Nc3 Bc5=) 6...Nbc6 7.a3 a6 8.Nc3 b5 9.Bb3 Nd4 10.Nd4 ed4 11.Ne2 Be5?? (better 11...Bb7=) 12.f4+- d3 13.fe5 (13.Be5?! Qb6 14.Kh1 de2 15.Qe2 Bb7+-) 13...Qb6 (13...de2 14.ef6 ed1Q (14...ed1R?? 15.fe7 Rf1 16.Rf1+-) 15.Rad1 gf6 16.Rf6 d5 17.ed5 Bb7+-) 14.Nd4 c5 (14...Nc6 15.Rf7! Rf7 16.Bf7 Kh8+-) 15.bc5 Qc5 16.Rf7! Rf7 17.Bf7 Kf7 (17...Kh8 18.cd3 Qe5+-) 18.Qh5 g6 19.e6! de6 20.Qc5 dc2 1-0. DEFFM – steinoff, freechess.org, 2018.

4.e4 Qf4 5.Bd3 b5 (5...Nc6 6.b5 Nb4 7.g3 Nd3 8.cd3=) 6.g3+/- Qf6 7.Bb5 c6 (7...Bb7 8.Qe2+/-) 8.Be2 Qe7 9.c3 (9.a3 Nf6+/-) 9...Nf6 10.Qc2 (10.d3 Bc7+=) 10...Bc7+= 11.h3 (11.Nh4 0-0+=) 11...d6 (11...d5 12.d3+=) 12.d3 (12.g4 d5 13.d3 0-0+=) 12...0-0 13.Nbd2 d5 (13...a5 14.a3+=) 14.Rd1 (14.a3 a5+=) 14...a5 15.Qa4 (15.a3 Rd8+=) 15...Bb7= 16.Ba3 (16.ba5 Ba5 17.Qb3 de4 18.de4 Ba6+=) 16...Bd6 17.Qb3 a4 (17...ab4!? 18.cb4 de4 19.de4 Ne4=+) 18.Qc2+= c5 (18...Nbd7 19.Nh4+=) 19.bc5+/- Bc5 20.Bc5 Qc5 21.Ne5 (better 21.Rb1 de4 22.Ne4 Be4 23.de4+=) 21...d4 (better 21...de4!? 22.d4 Qc7+=) 22.Ndc4+- Nc6 23.Nc6 Bc6 24.0-0 (24.cd4 Qd4 25.Qb2 Qd8+-) 24...a3 (24...Bd7 25.Kg2+/-) 25.Rc1+- Rfb8 (25...Bd7 26.cd4 Qd4 27.Qc3+-) 26.cd4 Qd4 27.Qc3 Qd7? (27...Qd8 28.Bf3+-) 28.Kg2 (28.Ne5!? Qe6 29.Nc6 Re8+-) 28...Rc8? (better 28...Bb5+-) 29.Ne5 Ne4 (29...Be4 30.de4 Rc3 31.Nd7 Ne4+-) 30.Qc6 (worse 30.de4 Be4 31.f3 Rc3 32.Nd7 Rc1 33.Rc1 Bf5+-) 30...Rc6 31.Nd7 Rc1 32.Rc1 (32.de4?! Rc2 33.Bc4 Rc4+/-) 32...Nd6 33.d4 g6 (33...Ra4 34.Rc3+-) 34.Rc7 (34.Kf3 Ra4 35.d5 Kg7+-) 34...Nf5 (34...Ra4 35.d5+-) 35.d5 (35.Bc4 Kg7+-) 35...Nd4 (35...Rd8 36.g4 Nd6 37.g5+-) 36.Bc4 Nf5 37.Kf3 (37.Ne5 Nd6+-) 37...h5 (37...Nd6 38.Bd3+-) 38.Bd3 Nd6 39.Rc6 (39.Kf4 Ne8 40.Rc3 Ra7+-) 39...Ne8 40.Ra6 (40.Ke4 Rd8 41.Ne5 Kg7+-) 40...Ra6 41.Ba6 Nc7 (41...f6 42.Nb6 Nd6 43.Nc4 Nc4 44.Bc4+-) 42.Bb7 (42.Bc4 Ne8+-) 42...Nb5 43.Bc6 Nd6 44.Nf6 (44.g4 Kg7+-) 44...Kf8 45.Ne4 Nf5 (45...Ke7 46.Nd6 Kd6 47.Kf4+-) 46.Kf4 (better 46.Nc3 Ke7 47.Nb5 f6+-) 46...f6 (46...Nd4 47.Ke5 Nc2 48.Nc3+-) 47.Nf6 Ke7 (47...Nd4 48.Be8+-) 48.Nh5! Nd4 (48...gh5 49.Kg5 Double attack (49.Kf5 Deflection; 49.Kg5 Decoy; 49.Kf5 Overloading)) 49.Ng7 Ne2 (49...Kf7 50.Ne8+-) 50.Ke3 (better 50.Ke5 Kf7 51.d6+-) 50...Nc3 51.Kd3 (51.Kd4!? Na2 52.Kc5 Kf7+-) 51...Na2 52.Kc4 Nc1 (52...Nb4 53.Kb3 (53.Kb4?! a2=+) 53...a2 54.Kb2+- (54.Kb4 a1Q 55.Ne6 Qe1 56.Kb5 Qe2 57.Ka5 Qf2-/+)) 53.Kc3 Kd6 (53...Nd3 54.Kb3+- (54.Kd3?! a2+=)) 54.Ne6 Ke5 (54...Nd3 55.Kb3+- (55.Kd3?! a2+/-)) 55.Kc2 a2 56.Kb2 (56.Kc1?! a1Q 57.Kd2 Qf1 58.f4 Kd6=) 56...Kd6 (56...Nd3 57.Ka2 Nf2 58.Ng5+-) 57.Nd8 (better 57.Ka1 Nd3+-) 57...g5 (57...Nd3 58.Ka2 Nb4 59.Kb3 Nd5 60.Kc4+-) 58.Nb7 (58.Nf7 Kc5+-) 58...Kc7 59.h4 (59.Nc5 g4 60.hg4 Kb6 61.Na4 Kc7+-) 59...gh4 60.gh4 Nd3 61.Ka2 Nf2 62.Kb3 Ng4 63.Kc3 Nh6 (63...Kb6 64.Kd4+-) 64.Kc4 Nf5 (64...Kb6+-) 65.Kc5 White plans d6 65...Nh4 66.d6 (66.d6 Kc8 67.d7 Kb8 68.Kb6 Nf3 69.d8Q) 1-0. Trkn – Lazar, itsyourturn.com, 2001.

4.e4 g5 5.h3 (better is 5.Nc3 c6 6.a3+=) 5...Bb4?? (better is 5...Nc6 6.a3 Nd4+=) 6.Be5+- (6.Ne5?! Bc5 7.Qc1 Qe7 8.Nf7 Kf7 9.Bh8 Qe4 10.Be2 Qg2+/-) 6...Qg6 7.Bh8 g4 (7...Qe4 8.Be2+-) 8.Ne5 (better is 8.hg4!? Qe4 9.Qe2 Qe2 10.Be2 h6+-) 8...Qe4 9.Qe2 Qc2 (9...Qe2 10.Ke2 gh3+-) 10.Nc6 (better is 10.Qg4 Ne7 11.Qb4 Nbc6 12.Nc6 Qc1 13.Ke2 Qc6+-) 10…Be7 (11.Ne7 Qc1 12.Qd1 Qd1 13.Kd1 Ke7 14.hg4 d6+-). bola (2000) – maxam, net–chess.com, 2007.

4.e4 Nh6 5.Nc3 c6 (5...Bb4? 6.Nd5 Qd8 7.Be5+-) 6.a3 (6.b5 Be7+=) 6...Ng4 (6...Be7 7.d4 d6 8.Be2+=) 7.h3+/- Nh6 8.g4 Qg6 (8...Ng8 9.g5 Qe6 10.d4+/-) 9.g5 Ng8 10.d4 Qe6 (10...ed4 11.Qd4 Ne7 12.Ne2+/-) 11.h4 (11.de5 Be5 12.Ne5 Qe5+/-) 11...Bc7 (11...ed4 12.Qd4 Bf8 13.0-0-0+/-) 12.Bh3 (12.de5 Be5 13.Ne5 Qe5+-) 12...Qe7+/- 13.Ne5 (13.de5 a5+/-) 13...Be5 (13...f6 14.gf6 Nf6 15.h5+/-) 14.de5+- Qe5 15.0-0 (better is 15.Nd5 Qb2 16.Nc7 Kd8 17.Na8+-) 15...Na6?? (15...h6 16.Nd5 Qb2 17.Nc7 Kd8+-) 16.Na4+- Qb5 17.Bg7 Qa4 18.Bh8 d6 19.Bc8 Rc8 20.Qd6 Rd8 21.Qe5 Ne7 22.Bf6 Rd7 23.Be7 Re7 24.Qh8 Kd7 25.Rad1 Kc7 26.Qd8 1–0. themonkey – nasarudin, GameColony.com, 2002.

5.b5 b6 6.e4=.

5.b5 Ne7 6.e4 0-0 7.Nc3 c6 (7...a4 8.d4 ed4 9.Qd4 Qd4 10.Nd4=) 8.Be2 b6 (8...Ng6 9.Na4+=) 9.0-0 cb5 10.Nb5 Ba6 (10...Nbc6!?+=) 11.Nd6+- Be2 12.Qe2 Qd6 13.Be5 Qh6 14.Rab1 Nbc6 (14...Qe6 15.Qe3+-) 15.Rb6 Ne5?? (15...Rae8+-) 16.Rh6 Nf3 17.Qf3 gh6 18.Qg3 Ng6 19.f4 f5 20.Qb3 Kh8 (20...Rf7 21.Qd5 Raf8 22.ef5+-) 21.Qd5 fe4 22.f5 Ne7 (22...Rac8 23.fg6 Rf1 24.Kf1 hg6 25.Qe4 Rf8 26.Ke2+-) 23.Qe5 (23.Qe5 Kg8 24.Qe7+-) 1–0. Pereira – Arrenger, internet, 2020.

5.b5 Nh6 6.e4+= 0-0 7.d4 (better is 7.Nc3+=) 7...Re8? (7...ed4 8.Bd4 Qg6 9.Nbd2=) 8.d5 (better is 8.de5!? Be5 9.Ne5 Re5 10.Be5 Qe5 11.Nd2+-) 8...c6 (8...b6 9.Nc3=) 9.dc6 (9.Nc3!?+=) 9...dc6= 10.c4 (10.Nc3 Rd8 11.Bd3 Nd7=) 10...Rd8=+ 11.Qb3 (11.Bd3 cb5 12.cb5 Bg4=) 11...a4 12.Qc2 Bd7 (12...cb5 13.c5 Bc7 14.Bb5=) 13.Nc3 cb5 14.cb5 Rc8 15.Qd3 b6? 16.Qd5 Ra7= 17.Bc4 Rac7–/+ 18.Na4 Rc4–+ 19.Nb6 R8c5 20.Qd3? Rc2–+ 21.Qb3? Bb5 22.a4 Re2 23.Kd1 Rf2?? 24.ab5–/+ Rcc2 25.Bc1 Rg2 26.Bd2 Rc5 27.Ra8? Rf2?? 28.Nd7+/- Qf3 29.Qf3 Rf3 30.Nc5 f6? 31.Rg1 Bc5 32.Rb8 Kf7 33.Rg2 Rf1 34.Kc2 f5 35.Bh6 gh6 36.Rb7 Kf6 37.ef5 Rf5 38.Rh7 Bf8 39.b6 e4 40.Kd2 h5?! 41.b7 Rb5 42.Rf2 Kg6 43.Rf8 Kh7 44.b8Q Rb8 45.Rb8 Kg6 46.Rb5 h4 47.Ke3 h3 48.Ke4 Kf6 49.Kf4 Ke6 50.Kg3 Kd6 51.Rf5 Ke6 52.Rf1 Ke5 53.Kh3 Ke6 54.Kg4 Ke7 55.h4 Ke6 56.h5 Ke5 57.h6 Ke6 58.h7 Ke7 59.h8Q Ke6 60.Rf5 Ke7 61.Rf6 Kd7 62.Qg7 Kd8 63.Rf8 1–0. unitedfan – ChessNo1, ChessWorld.net, 2005.

5.c4 a5 6.c5 Bf8 7.e3 ab4 8.ab4 Ra1 9.Ba1=.

5.c4 Qg6 6.c5 Be7 7.Ne5 Ne5 8.Be5 Bf6 9.Bf6 Qf6 10.Nc3 d6 11.e3 dc5 12.bc5 Ne7 13.d4 0-0 14.Bd3 c6 15.0-0 b6 16.cb6 ab6 17.Qc2 (17.Qb1 Ba6 18.Bh7 Kh8+-) 17...Qh6 (17...Bf5 18.Bf5 Qf5 19.Qf5 Nf5 20.Rfd1+/-) 18.Ne4 (18.Rfb1 Rb8+-) 18...Nf5? (18...Ba6 19.Rfb1 Nd5 20.Nc3+/-) 19.Ng3 (19.Rfb1 Rb8+-) 19...Nh4? (better 19...Ng3 20.hg3 Ba6+=) 20.Qc6?? (better 20.Rfb1 b5 21.a4+-) 20...Bg4 (better 20...Qc6 21.Be4 Qa4 22.Ba8 Qa8-+) 21.Be2 (better 21.Qh6 gh6 22.Rfb1+-) 21...Rac8 (better 21...Qc6 22.f3 Bd7-+) 22.Qb6 (better 22.Qh6 gh6 23.Bg4 f5+-) 22...Rb8?? (better 22...Qb6 23.Bg4 Rc2-+) 23.Qh6+- gh6 24.Bg4 Ng6 25.Bf5 Rb6 26.Bg6 (better 26.Rfc1!? Ne7+-) 26...hg6 27.a4 Rfb8 28.a5 Rb5 (28...Ra6 29.Rfc1+-) 29.a6 Ra8 30.a7 (better 30.Ne4 f5 31.Nc5 Kf7+-) 30...Rb7 31.Ne4 Rba7 32.Ra7 Ra7 33.Rd1 Ra2 34.d5 Kg7 (34...Kf8 35.d6 Ra8 36.Nc5+-) 35.d6 Ra8 36.d7 Rd8 37.Nc5 Ra8 (37...Kf6 38.Nb7 Ke7 39.Nd8 Kd8 40.g4+-) 38.d8Q Rd8 39.Rd8 h5 40.Rd7 Kf6 41.Ne4 (41.Ne4 Kf5 42.Re7+-) 1-0. Fournier,Frederic – chuladeburro, Active, 2007.

5.c4 Nh6 6.c5 Bf8 7.e3 d6 8.cd6 Bd6 9.Nc3 Be6 (9...e4 10.Nd4 Nd4 11.ed4=) 10.Ne4 Qf5 (10...Qg6 11.Qc2 Bd5 12.Nd6 cd6 13.Qg6 hg6 14.Be2=) 11.Nd6 (better 11.Bd3!? Kf8 12.Nc5+/-) 11...cd6+= 12.Rc1 0-0 13.g3 a6 14.Be2 f6 15.0-0 Qh3 16.Re1 Ng4 17.Bf1 Qh6? (17...Qh5 18.h3 Nh6 19.d4 Bh3 20.Ne5 Qd1 A) worse 21.Rcd1 Ne5 (worse 21...fe5 22.Bh3 ed4 23.ed4+=) 22.de5 Bf1=+; B) 21.Red1 Bf1 22.Nc6+=) 18.Nh4 (better 18.h3 f5 19.hg4 fg4 20.Nh4+-) 18...f5= 19.h3 Nf6 20.Qf3 Ne4 21.Red1 Ng5 22.Qg2 (better 22.Qh1 f4 23.Bg2=) 22...Ne4 (better 22...f4!? 23.Qh1 fg3 24.fg3 Qf6-/+) 23.d3 Ng5 (better 23...Nf6=) 24.Nf3 (24.f4 Nf7+/-) 24...Nf3 (24...Bd5!? 25.e4 Nf3 26.Qf3 fe4-/+) 25.Qf3= Rf6 (25...Rac8 26.d4 e4 27.Qf4 Qf4 28.ef4=) 26.Bg2 Rg6 27.d4 e4 28.Qf4 Qf4 29.ef4 d5 30.Rc5 Rf6 31.Rdc1 Rff8 32.Kf1 Rac8 33.h4 Na7 34.Rc8 Rc8 35.Rc8 Bc8 36.Ke1 Nb5 37.Bf1 Nd6 38.Be2 g6 39.Kd2 b5 40.Kc2 Kg7 41.Bf1 h6 42.Be2 Kf6 43.Ba1 g5 44.hg5 hg5 45.fg5 Kg5 46.Bb2 Nf7 47.Bc1 Kf6 48.Bh5 Nd6 49.Be2 Kg6 50.Bf4 Nc4 51.Bc4 dc4 52.d5 Kf6 53.Kc3 Bb7 54.Kd4 Ba8 55.Kc5 Bb7 56.Kb6 (better 56.Kd6=) 56...Bc8?? (56...Bd5 57.Ka6 Bc6 58.Kb6=) 57.d6?? (better 57.Kc7 Be6 58.de6 Ke6 59.Bd2+-) 57...Ke6= 58.Kc7 (58.Kc5!?=) 58...Bd7=+ 59.Kb6 Bc8 60.Kc6 Bd7 61.Kc7 (61.Kb6 e3 62.fe3 c3=) 61...Be8 (61...c3 62.Be3=) 62.Kb6 (62.Kd8 Bc6=) 62...c3=+ 63.Ka6 c2 64.Kb6 Kd5 (64...e3!? 65.Be3 Kd6=) 65.Kc7= Bc6?? (better 65...Ke6=) 66.d7+- Bd7 67.Kd7 Kd4 68.Kc6 Kc4 69.Be3 1-0. Fournier,Frederic (1755) – AlbertNurgalyamov, ChessOK.com, 2012.

5.e3 Qe6 6.Be2 Nf6 7.0-0 0-0 8.c4 (better 8.b5 Na5 9.Bc3=) 8...Qe7?? (better 8...e4 9.Ng5 Qf5=) 9.c5+- Bc5 10.bc5 Qc5 11.d4 ed4 12.ed4 Qe7 13.d5 (13.Re1 d5+-) 13...Nd8? (better 13...Nd5!? 14.Re1 Qc5+/-) 14.Nc3 d6 15.Re1 Qd7 16.Bb5 c6 17.Bc4 b5?! (17...Qg4 18.Be2+-) 18.Ba2 (18.dc6!? Nc6 19.Nb5 d5+-) 18...Ba6 (18...c5 19.Qc2+-) 19.Qd4 (19.dc6 Nc6 20.Qd3 Rae8+-) 19...c5 20.Qh4 Qb7 (20...Qg4 21.Qg4 Ng4 22.Re7+-) 21.Ng5 (21.Qg3!? c4+-) 21...h6 22.Nf3 c4 (22...Qb6 23.Rab1 c4 24.Nb5 Qb5 25.Bf6 Qd5 26.Rbd1+-) 23.Re2 (23.Qg3 b4 24.Ne4 Nh5 25.Nf6 Nf6 26.Bf6 Ne6 27.de6 fe6 28.Re6 Rf7+-) 23...Qb6 24.Qg3 (24.Rae1 Nb7+-) 24...Nb7 (24...Nh5 25.Qg4 Nf6 26.Qf4+-) 25.Rae1 (25.Ne4 Nh5 26.Nf6 Nf6 27.Bf6 g6+-) 25...Nc5 (25...Nh5 26.Qh4 Nf6 27.Bb1+-) 26.Ne4 Nce4 27.Re4 Nh5 28.Qg4 (28.Qh4 g6 29.Rg4 Rfe8 30.Qh5 Re1 31.Ne1 Qa5 32.Rg6 Kf8 33.Qh6 Ke8 34.Qe3 Kd7+-) 28...g6? (better 28...f5 29.Qh5 fe4 30.Re4 Qc7 31.Bg7 Qf7 32.Qh6 Qg7 33.Qe6 Rf7+-) 29.Nh4 Kh7 (29...Bc8 30.Qf3 Qd8+-) 30.Ng6! fg6 (30...fg6 31.Re7 Mate attack) 31.Re7 Ng7 (31...Rf7 32.Rf7 Ng7 33.Rg7 Kh8 34.Rg6 Qd4 35.Rh6) 32.Rg7 (32.Bg7?? Qf2 33.Kh1 Qf1 34.Rf1 Rf1) 32...Kh8 33.Rb7 (33.Rg8 Kg8 34.Qg6) 33...Kg8 (33...c3 34.Bc3 Rf6 35.Bf6 Kg8 36.Qg6 Kf8 37.Qg7) 34.Qg6 1-0. GuestPLVP – bangedup, freechess.org, 2017.

5.e3 Nge7 6.Be2 (6.Bd3 0-0+/-) 6...Qg6 7.0-0 (7.b5 e4 (7...Qg2? 8.Rg1 Qh3 9.Bf1+-) 8.Nh4 Qh6+=) 7...Nf5 (7...0-0 8.d3=) 8.c4 (better 8.Nc3 0-0 9.Bd3+-) 8...Nce7?? (better 8...e4 9.Ne1 0-0+=) 9.c5 b6 (9...e4 10.Ne1 Bh2 11.Kh2 0-0+-) 10.cd6 cd6 11.Nc3 (better 11.e4 Nd4 12.Nd4 ed4 13.Bd4 0-0+-) 11...Bb7 12.Qc2 (12.d3 Bf3 13.Bf3 Rc8+-) 12...0-0 (12...Nd4 13.Qg6 Ne2 14.Ne2 hg6 15.Rfc1+-) 13.e4 (13.Qd3 Rae8+-) 13...Nh6 (13...Nd4 14.Qd3 Ne2 15.Qe2+-) 14.Nh4 (14.Qa4 Rfd8+-) 14...Qg5 15.Nf3 Qf6?? (15...Qg6 16.Qa4 Nc6+-) 16.Nd5! Bd5 (16...Bd5 17.ed5 Combination; 16...Nd5 17.ed5 Combination) 17.ed5 Nd5 18.Bc4 (18.g3!? Rfc8 19.Qe4 Ne7+-) 18...Nf4 19.Qb3 Qg6 20.g3 Nf5 21.Kh1 Nh3 (21...Ne6 22.d3+-) 22.Bd5 Rac8 23.Rac1 Rc1 24.Bc1 Re8 25.Bf7?? (better 25.d3 Rc8 26.Bd2+-) 25...Qf7=+ 26.Qf7 Kf7 27.Kg2 e4 28.Kh3 ef3 29.Bb2 g6 (better 29...Nh6!?-/+) 30.Kg4= h5 31.Kf3 d5 32.Rc1 d4 (32...g5 33.h3+=) 33.Rc7 (33.h3 g5+/-) 33...g5 34.Bd4?? (34.Rd7 Kf6 35.h3+/- (worse 35.Bd4 Ke6 36.Ra7 Nd4 37.Kg2 Nc2=+)) 34...Nd4-+ 35.Kg2 Re7 36.Ra7 Nc6?? (better 36...g4 37.Rc7 Nf3-+) 37.Rb7=+ Re2 (37...g4 38.Rb6 Re2 39.Rb5=+) 38.Rd7 Re7 39.Rd6 Rc7 (39...Re6!? 40.Rd5 Kg6=) 40.Rd5 Ke6? (better 40...Kf6+=) 41.Rg5+- Kf6? (better 41...h4 42.gh4 Kf7+-) 42.Rh5 Ne5 43.Rh4?? (43.d4 Nc4 44.a4 Nd6 45.Rh6 Ke7 46.Rh7 Nf7+-) 43...Rc2? (43...Ra7!?+/-) 44.d4 (44.Rh6!? Kf5 45.Rb6 Rd2+-) 44...Nc4 (44...Nf7 45.a4+-) 45.Rf4 (45.a4!? Ra2 46.a5 b5+-) 45...Ke6 (45...Ke7 46.h4 Na3 47.g4+-) 46.h4 Na3 47.h5 Rc7 (47...Rc8 48.g4 Rh8 49.Rf5+-) 48.Re4 (48.g4 Rh7+-) 48...Kf5 (better 48...Kd5 49.Rh4 Nc2+=) 49.Rf4 (49.Re5!? Kf6 50.g4+-) 49...Kg5 (49...Ke6 50.g4 Rh7 51.Rf5+-) 50.Kh3 (50.Rh4 Rd7+=) 50...Nc2 (50...b5 51.Rf3 Nc2 52.Rf8+=) 51.Rh4 (better 51.Re4!? Kf5 52.Re5 Kf6 53.Rd5+/-) 51...Nb4= 52.f4 Kh6 53.Kg4 Nd5 54.Kf3 b5 55.Ke4 Nf6 (55...Nc3 56.Kf5=) 56.Kf5 (56.Ke5 Kg7 (56...Nh5? 57.g4+-) 57.g4 Re7 58.Kd6 Rd7 59.Ke6 Rd4 60.h6 Kh7+=) 56...Nd5+= (56...Nh5? 57.g4 b4 58.Rh5 (58.gh5?! b3 59.Rh1 b2+/-) 58...Kg7 59.Rh2+-) 57.Ke4 (57.Ke6 Ne3+=) 57...Nc3= 58.Kd3 (58.Ke5 b4 59.d5 b3-+) 58...b4=+ 59.g4? (59.Rh2=+) 59...Nd5?? (59...b3 60.Rh2 Nd1 61.g5 Kh7-+) 60.g5= Kh7 61.f5 b3 62.Rh2?? (better 62.Rh1 Nb4 63.Ke3 Nd5 64.Kd3 Nb4 65.Kd2 Rc2 66.Ke3=) 62...Nf4-+ 63.Ke3 Nd5 (better 63...Ne2! 64.g6 Kh6-+) 64.Kd3 Ne7?? (better 64...Nb4 65.Ke4 Re7 66.Kf3 Nc2=) 65.f6+- Ng8?? (65...Nd5 66.g6 Kh6+-) 66.g6 Kh6 67.f7 Rc8 68.d5 (better 68.fg8Q Rg8 69.Kc4+-) 68...Nf6+/- 69.Rf2 (better 69.Re2+/-) 69...Nh5?? (better 69...Kg7+=) 70.f8Q+- Rf8 71.Rf8 b2 (71...Kg6 72.Kd4 Nf6 73.Rb8+-) 72.Rb8 Nf4 (72...Kg6 73.Rb2 Kf6+-) 73.Ke4 b1Q 74.Rb1 Ng6 75.Rf1 Ne7 76.Ke5 Kh5 77.d6 Nc6 78.Kd5 Nd8 79.Rg1 Kh4 80.Ke5 Kh3 81.Kf6 Kh2 82.Rg7 Kh3 (82...Nc6 83.d7 Nd8 84.Rg8 Nb7 85.Rb8 Nd6 86.d8Q Nc4 87.Qc7 Kg1 88.Qc4 Kf2 89.Rb2 Ke3 90.Ke5 Kf3 91.Qf4) 83.Rc7 Kh4 (83...Kg4 84.Ke7 Kf5 85.Kd8 Ke6 86.d7 Kf6 87.Kc8 Ke5 88.d8Q Kf5 89.Qd5 Kf4 90.Rf7 Ke3 91.Rf3 Ke2 92.Qd3 Ke1 93.Rf1) 84.Ke7 Kh5 (84...Kg5 85.Kd8 Kf5 86.Ke7 Kg4 87.d7 Kg3 88.d8Q Kg4 89.Kf6 Kg3 90.Qd3 Kh4 91.Rg7 Kh5 92.Qh3) 85.Kd8 (85.Kd8 Kg4 86.Ke7 Kf4 87.d7 Ke3 88.d8Q Ke4 89.Qd2 Kf3 90.Qd3 Kf4 91.Kf6 Kg4 92.Rh7 Kf4 93.Rh4) 1-0. GuestGCPD – herculanum, freechess.org, 2017.

5.e3 Bb7 6.Nc3 a6 A) 7.ba6 Na6 8.Nb5 Bf3 9.Nd6 cd6 10.gf3 Ne7 11.d4=; B) 7.Be2 Ne7 8.d3 0-0 9.0-0 Rd8 10.a4 Qg6 11.a5=; C) 7.a4 C1) 7...e4 8.Nd4 Be5 9.a5 ab5 10.ab6 Ra1 11.Qa1=; C2) 7...Ne7 8.a5 ba5 9.Ra5 0-0 10.e4 Bb4 11.Ra4=; D) 7.Bc4 Ne7 8.ba6 Na6 9.Nb5 Ng6 10.h4 Be7 11.h5+=.

5.e3 Bb7 6.Nc3 Ne7 A) 7.Bc4 A1) 7...0-0 8.0-0 e4 9.Ne1 a6 10.a4 Qe5 11.g3=; A2) 7...a6 8.ba6 Na6 9.Nb5 Ng6 10.h4 Be7 11.h5+=; A3) 7...e4 8.Nd4 Be5 9.Qg4 h5 10.Qe2 d5 11.Bb3=; B) 7.d3 Bb4 8.a3 Ba5 9.Nd2 a6 10.ba6 Ra6 11.Nb5=; C) 7.d4 C1) 7...ed4 8.Qd4 Qd4 9.Nd4 0-0 10.Rd1 Re8 11.Nf3=; C2) 7...Bf3 8.gf3 Bb4 9.a3 Ba5 10.de5 Qe5 11.Qd3=; D) 7.e4 D1) 7...0-0 8.a4 a5 9.Bc4 Qg6 10.0-0 Ra7 11.Qe2+=; D2) 7...a6 8.d4 ed4 9.Qd4 Qd4 10.Nd4 0-0 11.Bd3=; E) 7.Rb1 E1) 7...Qg6 8.d4 ed4 9.Qd4 Bc5 10.Qd3 a6 11.Qg6=; E2) 7...a6 8.ba6 Na6 9.Nb5 Ng6 10.Nd6 Qd6 11.d4=; F) 7.a4 F1) 7...0-0 8.e4 a5 9.Bc4 Qg6 10.0-0 Ra7 11.d4+=; F2) 7...a6 8.Bc4 0-0 9.0-0 e4 10.Ne1 Qe5 11.g3=.

5.e3 Bb7 6.Nc3 Bf3 7.Qf3 White fights for the Initiative (7.gf3 A) 7...a6 8.Rg1 (8.Ne4 Qe6 9.f4 ab5 10.Nd6 cd6 11.Rg1+=) 8...Ne7 9.Ne4 Qh6 10.f4 Qh2 11.Rg7+/-; B) 7...Ne7 8.Ne4 (8.Bg2 a6 9.f4 Ra7 10.ba6 Ra6 11.Nb5+=) 8...Qe6 9.f4 a6 10.Rg1 ab5 11.Rg7+/-) 7...Qf3 8.gf3 Nf6 (8...Ne7 9.Bg2 c6 10.f4 f6 11.fe5+/-) 9.Rg1 g6 (9...0-0 10.Ne4 Ne4 11.fe4+=) 10.Bg2 c6 11.f4 ef4 12.Ne4 Ne4 13.Bh8 (worse 13.Be4 0-0=+) 13...Nc5 14.Rb1 fe3 15.de3 Be7 16.Bd4 f5 17.Ke2 Ne4 18.c4 c5 19.f3 cd4? (better 19...Nd6 20.Be5 a6+-) 20.fe4 Bc5 (20...a6 21.ef5 Ra7 22.fg6 hg6+-) 21.ef5 d5 (21...Nc6 22.bc6 Rd8 23.cd7 Kd7 24.fg6 hg6 25.ed4 Bd4 26.Bh3 Ke7 27.Rg6+-) 22.Bd5 Nd7 23.Ba8 de3 24.fg6 hg6 25.Rg6 Ne5 (25...Nf8 26.Rg7 Ne6 27.Bc6 Kf8 28.Ra7 Nd4 29.Kd3 e2+-) 26.Re6 Kf7 27.Re5 (27.Re5 Bf8 28.Rf1 Kg6 29.Be4 Kh6 30.Re6 Kg7 31.Rg6 Kh7 32.Rf8 a6 33.Rg4 Kh6 34.Rh8) 1-0. pierre - kartal12, internet, 2008.

5.e3 Bb7 6.Be2 Ne7 7.0-0 c6 8.a4 cb5 9.ab5 0-0 10.d3 Bc7 11.e4 d6 12.Nbd2 Nd7 13.c4 (13.d4 Ng6+=) 13...Ng6 14.h3 (14.d4!?+=) 14...Nf4 15.d4 Bc8 (better is 15...Qh6=) 16.de5 (16.Re1 a6+=) 16...Ne5 (16...de5 17.Ne1–/+) 17.Ne5 (better is 17.Kh1!?=) 17...de5–/+ 18.Bg4 Bg4 (18...Rd8 19.Bc3 Bg4 20.hg4–+) 19.hg4 (better is 19.Qg4 Rfd8 20.Nf3=) 19...Qh4?? (19...Rfd8 20.g3 Ne6 21.Qe2=+) 20.Qf3?? Qg5 21.Bc1 g6 22.g3 Ne6+= 23.Qg2 Kg7 24.Nf3 Qg4=+ 25.Nh2 Qh5 26.Qf3 Qf3–/+ 27.Nf3 Rh8 28.Ng5 h5 29.Ne6+= fe6 30.Kg2 h4 31.gh4 Rh4 32.Rh1 Rg4?? 33.Kf3+- Rf4 34.Bf4 ef4 35.Rad1 Kf6 36.Rd7 Rc8 37.Rhh7 Bd8?? (38.Rh8 Rc4 39.Rhd8 Rb4+-; better is 37...Bb8+-) 0–1. var – bach1, Live Game Caissa's Web, 2004.

5.e3 Bb7 6.Be2 Ne7 7.d4 e4 8.Nfd2 Nd5 (better 8...Qg6 9.0-0 a6=) 9.Ne4+/- Qg6 (9...Bb4 10.c3 Qg6 11.Bf3+/-) 10.Nd6+- cd6 (10...Qd6 11.Ba3 Qe6+-) 11.Bf3 0-0? (11...a6 12.c4 Nb4 13.Bb7 Ra7 14.ba6 N8a6+-) 12.c4 Ne3 13.fe3 Bf3 (13...Be4 14.Nc3 f5 15.Nd5+-) 14.Qf3 (14.gf3?! Qg2 15.Rf1 Qb2+=) 14...d5 (14...a5 15.Nc3 (worse 15.Qa8 Nc6 16.Qb7 Qg2 17.bc6 Qh1 18.Kd2 Qg2 19.Kc3 Re8+-) 15...Ra7 16.Nd5+-) 15.Qd5 Nc6 (15...Re8 16.0-0 Nc6 17.bc6 dc6 18.Qf3+-) 16.bc6 dc6 17.Qf3 Rae8 18.0-0 Qc2 (18...Qd3 19.Re1 Qc4 20.Ba3+-) 19.Ba3 1-0. GuestFQXG – GuestPDYB, freechess.org, 2019.

5.e4 c6 6.d4+/- ed4 7.Bd4 (7.Nd4?! Be5 8.c3 a6=) 7...Qg6 8.Bd3 f6?? (better 8...cb5 9.e5 Qe6+/- (9...Qg2?? 10.Rg1 Bb4 11.Bc3+-)) 9.e5+- Qg2 10.Rg1 Qh3 11.ed6 cb5 (11...Qe6 12.Qe2 Qe2 13.Ke2+-) 12.Rg7 Nc6 13.Qe2 Kf8 14.Rg3 Qh6 (14...Qe6 15.Qe6 de6 16.Bb5+-) 15.Bb2 (better 15.Be3!? Qh5+-) 15...Bb7 16.Nc3 (16.Ng5 Nb4 17.Be4 Re8+-) 16...Re8 17.Ne4 f5 (17...Nb4 18.Kd1 Nd3 19.cd3 b4+-) 18.Bh8 fe4 19.Bg7 Qg7 20.Rg7 ed3 (20...Nf6 21.Rd7! Nd7+-) 21.Rg8! (21.Rg8 Kg8 22.Qe8 Kg7 23.Qd7 Kf6 24.Qb7 d2 25.Kd2 h6 26.Qc6 b4 27.d7 Kf5 28.Qd5 Kg4 29.Rg1 Kf4 30.Qe5 Kf3 31.Qe3) 1-0. DEFFM – GuestQZZN, freechess.org, 2018.

5.e3 a6 6.a3 Bc7 7.Be2 d6 8.0-0 Bd8 (8...Qg6 9.d4 e4 10.Ne1=) 9.d3 Qg6 10.Kh1 Nh6 11.Nbd2 0-0 12.Ne4 (12.c5+/-) 12...f6? (better 12...f5 13.Nc3 Bf6=) 13.Nd6+- Nd7 14.Nc8 Rc8 15.Qb3 Bc7 16.d4 e4 17.Nd2 Ng4 (better 17...Rcd8+-) 18.f4 (better 18.c5 Kh8 19.Qe6 Nh2 20.Qd7 Nf1 21.Rf1+-) 18...ef3+= 19.Nf3 (19.c5 Kh8 20.Rf3+= (worse 20.Bf3 Nh2 21.Rfd1 Nf3 22.Nf3 Rfe8=; 20.gf3?? Qh5 21.Rf2 Nf2 22.Kg1 Qh2 23.Kf1 Ng4-+)) 19...Qh6= 20.h3 Ne3 21.Bc1 Qf4?? (better 21...Rce8 22.Ne5 fe5 23.Be3 Qe6+/-) 22.Be3+- (22.Qe3?! Qe3 23.Be3 Rce8+=) 22...Qf5 (22...Qg3 23.d5+-) 23.Nh4 (better 23.c5 Kh8 24.Ne5 Qf1 25.Rf1 fe5 26.Rf8 Rf8+-) 23...Qe4 24.Nf3 Rce8?? (24...Qf5 25.c5 Kh8+-) 25.Bf2 Qf4 (25...Qe2?? 26.Rae1+-) 26.Rae1 Qh6 (26...Re7 27.c5 Kh8 28.Bd3 Re1 29.Re1+-) 27.Bd3 Rd8 28.Re4 g5 (28...Bf4 29.Rfe1+-) 29.Re7 f5 30.c5 Kh8 31.d5 Nf6 (31...g4 32.Bd4 Nf6 33.Ng1+-) 32.Rc7 Nd5 (32...Rd5 33.Rb7 g4 34.Ng1+-) 33.Bd4 Nf6 (33...Kg8 34.Rb7 g4 35.Rg7 Qg7 36.Bg7 Kg7 37.Nd4+-) 34.Bf5 1-0. aschellen – kingcolemk, internet, 2006.

5.e3 Bc7 6.Nc3 d6 7.Ne4 Qf5 8.Bd3 Nf6?? (better 8...Qd7+=) 9.Nd6!+- Bd6 10.Bf5 Bf5 11.Be5 Bb4 12.Nd4 Be4 13.Bf6 gf6 14.Qg4 f5 15.Qg7 Rf8 16.Ke2 Nd7 17.f3 c5 18.a3 cd4 19.ab4 d3 20.Kf2 Bc6 21.b5 f4 22.ef4 Bb5 23.cb5 Nc5 (23...Kd8 24.Ra3 a5 25.Rd3 Re8 26.Qf6 Re7 27.Re1 Ra6 28.Qe7 Kc7 29.Rd7 Kb8 30.Rb7 Ka8 31.Qd8 Kb7 32.Re7 mate) 24.Rhe1 Ne6 25.Rac1 Kd7 (25...Ke7 26.Re6! Ke6 27.Qe5 Kd7 28.Rc7 Kd8 29.Qe7 mate) 26.Re6! Ke6 (26...Ke6 27.Qe5 Mate attack) 27.Qe5 Kd7 28.Rc7 Kd8 29.Qe7 1-0. usingprogram (2020) - marti9999, kurnik, 2012.

6.Na3 a6?? 7.Nc4+/- Ne7 8.e3 (8.Be5 Be5 9.Nfe5 0-0+-) 8...Ng6 9.h4 (9.d4 d6 10.cd6 Bd6 11.a3+- (11.Nce5?! Ne5 12.de5 Bb4 13.Nd2 Qg6=; worse 11.Nd6 Qd6 12.Qb3 e4+=)) 9...Qe7? (better 9...h5+/-) 10.h5+- e4 (10...Nf8 11.Be5 Kd8 12.Bg7+-) 11.hg6 ef3 (11...fg6 12.Be5 Be5 13.Nfe5+-) 12.Bg7 (12.gh7?! fg2 13.Bg2 f6+-) 12...Rg8 (12...fg2 13.Bg2 fg6 14.Bh8 a5+-) 13.gh7 (13.gh7 Rg7 14.h8Q Qf8 15.Qf3+-) 1-0. Janek – Ferenc, internet, 2017.

6.Nc3 d5 7.cd6 Qd6 8.a3 (8.Nb5 cb5 9.Be5 Qe5 10.Ne5 Be5+/-) 8...Nf6+= 9.e3 0-0 10.d4 (10.Qc2 Nbd7+=) 10...ed4 11.Qd4 Qd4 12.Nd4 Nbd7 13.Be2 Nb6 14.0-0 Re8 15.Rfd1 Bg4 16.Rac1 (16.f3 Bd7 17.e4 a5=) 16...Rad8 17.h3 Be2 18.Nce2 Na4 19.Ba1 Bb6 (19...Ne4!?=) 20.Nf5+= Kf8 21.Bf6 gf6 22.Ned4 Bc7 23.Rc2 Be5 24.Rdc1 a6 25.g4 Rd5 26.Kg2 Bd4 27.Nd4 Nb6 28.Rc5 Red8 29.Nf5 (29.Rd5 Rd5 30.Kf3+=) 29...h5? (29...Rd2 30.Kg3=) 30.Kg3 (better 30.gh5!? Rd2 31.Kf3+/-) 30...hg4= 31.hg4 Rc5 (better 31...Rd3!?=) 32.bc5+/- (32.Rc5?! Rd3=) 32...Nd5 33.Rb1 Rb8 34.Rh1 Kg8 35.Nh6 (35.f3!?+/-) 35...Kg7= 36.Nf5 Kg8 37.f4 Re8 38.Kf3 b5 (38...Rb8 39.Rb1+/-) 39.cb6!+- Nb6 (39...Rb8 40.Rb1 Rb7 41.Rb2+-) 40.Rc1 Rc8?? (better 40...Re6+-) 41.Ne7 (41.Ne7 Kf8 42.Nc8 Nc8 43.Rc6+-) 1-0. carlos78 (2250) - MikeyG (2170), Rated Blitz game, lichess.org, 2015.

6.d4 ed4 7.Bd4 Qg6 8.e3 Nf6 (8...d6 9.Bd3 Qh6 10.0-0+=) 9.Bd3 (9.Be5 Be5 10.Ne5 Qf5+-) 9...Qh6+= 10.Nc3 (10.0-0 d6+=) 10...0-0 (10...d5 11.b5+=) 11.0-0 d5 (better 11...Rd8!?+-) 12.cd6!+- Bd6 (12...Bb6 13.Bf6 Qf6 14.Ne4+-) 13.Bf6 Qf6 (13...gf6 14.Bh7! Kh7 15.Qd6+-) 14.Ne4 Qe6? (14...Bh2 15.Nh2 Qh6+-) 15.Nd6 g6 (15...Qe7 16.Nc8 Rc8 17.Qc2+-) 16.Bc4 Qd7 (16...Qe7+-) 17.Ne5 Qg4 (17...Qe7 18.Bf7 Rf7 19.Ndf7 Nd7+-) 18.Ng4 (18.Ng4 Bg4 19.Qg4+-) 1–0. Janek – Tyzkus, internet, 2017.

6.d4 d6 7.cd6 Bd6 8.de5 Be5 9.Ne5 Qe6 10.Nc6! f6 (10...bc6 11.Bg7 Combination; 10...Nc6 11.Bg7 Combination; 10...Qc6 11.Bg7 Combination) 11.Qd8 Kf7 12.Nb8 Qe8 13.Qd5 Qe6 14.Qh5 g6 15.Qc5 Ne7 (15...Qe8 16.Nd2 Rb8 17.Qc7 Bd7 18.Rd1+-) 16.e3 Rb8 (16...Qf5 17.Bc4 Be6+-) 17.Bc4 Nd5 18.Bd5 b6 19.Qc7 Bd7 (19...Ke8 20.Be6 Rf8 21.Qb8 Ke7 22.Bc8 Rf7 23.Ba6 h5 24.Bc4 h4 25.Qa7 Kd6 26.Qf7 Kc6 27.b5 Kd6 28.Bf6 Kc5 29.Be7) 20.Qd7 (20.Qd7 Kf8 21.Be6 Rb7 22.Qb7 Ke8 23.Bf6 Kf8 24.Qe7) 1–0. gho8811h – nbsjptfljj, private online chess game, 2018.

6.d4 d6 7.cd6 Bd6 8.de5 Be5?? 9.Ne5+- Qg5 10.h4 Qh5 (10...Qh6 11.Qd4 Nf6 12.g4+-) 11.Nc6! bc6 (11...bc6 12.Bg7 Combination; 11...Nc6 12.Bg7 Combination) 12.Bg7 Bf5 (12...Qg4 13.Bh8 Qb4 14.Nc3+-) 13.Bh8 Na6 (13...a5 14.b5!+-) 14.Qa4 Qg6 (14...Nb8 15.Nc3 Ne7 16.e4+-) 15.h5 Qd6 (15...Qh6 16.e4 Bg4 17.f3 Qe3 18.Be2 Nb4 19.Qb4 (19.fg4?? Nd3 20.Kd1 Qc1) 19...Qc1 20.Bd1 Qe3 21.Kf1+-) 16.Qa6 Nh6 (16...Rd8 17.f4 Qf4 18.Qc6 Rd7 19.Qc3+-) 17.Nc3 Ng4 18.Rd1 Qb4 19.Qc6 Ke7 20.Qa8 Qc5 21.Qd8 Ke6 22.Qd7 1–0. Barcarola – pors6, internet free game, 2018.

6.d4 d6 7.cd6 Bd6 8.de5 Be5?? 9.Ne5+- Nh6 10.Nc4 Qg6 11.Nd6 Ke7 12.Qd4+-.

5.a4 Nc6 6.b5 ab5 7.ab5 Ra1 8.Ba1 Nce7 9.c4 (9.Bd3 Ng6+=) 9...Qf5 (9...b6 10.d4 Ng6 11.Bd3+=) 10.g4 (10.c5 Bc5 11.Be5 Nf6 12.Bc7 d6+/-) 10...Qe6 (10...Qg4 11.Rg1 Qf5 12.Rg5+= (worse 12.Rg7 Ng6=+)) 11.d4 (11.c5 Bc5 12.Be5 A) 12...Qg4?? 13.Rg1 (13.Bc7?! Qe6+=) 13...h5 14.Bg7+-; B) 12...Qg6 13.Bc7 Nd5+= (worse 13...Qg4 14.Rg1 Qe6 15.Rg7+/-)) 11...ed4 12.Nd4 (12.Qd4 Nf6+=) 12...Qe4 13.Rg1 (better 13.Nf3 Bb4 14.Bc3 Bc3 15.Nc3 Qg4 16.b6=) 13...Bh2? (13...Bb4 14.Bc3 Bc3 15.Nc3+=) 14.Nc3?? (better 14.Bd3 Qe5 15.Rg2+-) 14...Qg6= 15.Bd3 Qf6 (15...Qb6 16.Na4 Qa5 17.Bc3+=) 16.g5 (better 16.Ne4 Qb6 17.Rh1+=) 16...Qe5?? (better 16...Qb6 17.Rh1 Be5+=) 17.Nf3+- Qd6 (17...Qe6 18.Nh2 h6 19.Nd5+-) 18.Rh1 (18.Ne4 Qa3 19.Nh2 Nf5+-) 18...Be5 (18...Qb4 19.Rh2 h6 20.Qd2+-) 19.Ne5 Qe5 (19...h6 20.Ne4 Qa3 21.c5+-) 20.Ne4 Qe6 21.Bg7 b6 (21...Ng6+-) 22.Bh8 Bb7 (22...d5 23.Nf6 Nf6 24.Bf6 dc4 25.Rh7 cd3 26.Qd3+-) 23.Qf3 f5 (23...d5 24.cd5 Nd5 25.Rh7 Nb4+-) 24.gf6 Ng6 (24...h6 25.fe7 Ke7 26.Rg1+-) 25.Rh7 Ne5 26.Qh5 (26.Nd6! Kd8 27.Qb7 Nd3 28.Kd2 Qe3 29.fe3 cd6 30.Qd7) 26...Kd8+- 27.Qe5! Qe5 (27...Qe5 28.f7 Passed pawn) 28.f7 (28.f7 Qe8 29.fe8Q Ke8 30.Nf6 Kd8 31.Ng8+-) 1-0. DEFFM – GuestSZLX, freechess.org, 2018.

5.a4 Ne7 6.Be2 (6.c4 Ng6 7.c5 Bf8+=) 6...0-0= 7.0-0 b6 (7...Qe6 8.e4=) 8.c4 (8.Na3 Nbc6=) 8...Bb7 (8...Nbc6 9.b5 Nb4 10.d4=) 9.c5+= bc5 10.bc5 Bc5 11.Be5 Qc6 12.Qc2 Ng6 13.Bb2 (13.Bg3 Re8+=) 13...d5 (13...Nf4 14.Bd1 Ne6 15.Nc3+=) 14.Rc1+/- Nd7?? (better 14...Bd6+/-) 15.d4+- Qb6 (15...Rfe8+-) 16.dc5 Nc5 (16...Qc5 17.Qc5 Nc5 18.Rc5+-) 17.Bd4 Qe6 (17...Qc6 18.Bc5 Rfb8 19.Nbd2+-) 18.Bc5 Rfe8 (18...Rfb8 19.Bd4+-) 19.Qb2 (better 19.Bd4 f6+-) 19...Rab8 (19...Qc8 20.Bd3+-) 20.Ba7 Rbd8 (20...Qc8 21.Bb8 Qb8 22.Na3+-) 21.Qb7 Qd6 (21...Nf4 22.Ba6 Ng2 23.Bf1+-) 22.Rc6 Qe7 23.Rc7 Qe6 24.Nd4 Qf6 25.Nc3 Ne7 26.Ba6 Nf5 27.Nd5 Qg6 28.Bd3 Qh5 29.Nf5 1-0. DEFFM – GuestPPVC, freechess.org, 2018.

5.c4 c5? 6.bc5 Bc5 7.Be5 (7.Be5 Qh6 8.Bf4+-) 1-0. GuestZKLM – GuestHPVS, freechess.org, 2019.

5.b5 Nb4 6.a3+/- Nd5 7.c4 Nb6 8.a4 Nc4? (better 8...a5+/-) 9.Bc4+- Ne7 1-0. GuestGRRR – GuestDFTD, freechess.org, 2017.

5.b5 Nb4 6.a3 Nd5 7.c4 Nb6 8.Bd3 Ne7 (8...c5 9.a4 Qe6 10.Ng5+/-) 9.Qc2 c5 10.a4 a5 11.ba6 (better 11.Nc3 Bc7 12.Ne4+/-) 11...Nc6? (better 11...Ra6 12.a5 Na8+/-) 12.a5+- Nb4 13.Qb3 Nd3 (13...Nc4 14.Qc4 ba6 15.Nc3+-) 14.Qd3 Bc7 (14...Nc4 15.Qc4 Ra6 16.Qd5+-) 15.ab6 (better 15.ab7 Bb7 16.ab6 Qb6 17.Be5 Be5 18.Ne5 0-0 19.Nd7 Qc7 20.Ra8 Ra8+-) 15...Bb6 (15...Qb6 16.Be5 Be5 17.Ne5 Ra6 18.Ra6 ba6+-) 16.Be5 Qg6 17.Qd5 (better 17.Qg6 hg6 18.Bg7+-) 17...Qg2 (17...Ra6 18.Ra6 ba6+-) 18.Rg1 Qg1 (18...Qh3 19.Bg7 Qe6 20.ab7 Bb7 21.Ra8 Ba8 22.Qa8 Bd8 23.Bh8+-) 19.Ng1 0-0 20.ab7 Ra1 21.Ba1 (21.Ba1 Bb7 22.Qb7+-) 1-0. DEFFM – azeez, freechess.org, 2018.

5.b5 Nb4 6.a3+/- Nd5 7.c4 Nb6 8.d4 e4 9.Nfd2+/-.

5.Na3 Bb4 6.Be5 Qg6 7.Nb5+/-.

5.Na3 c6 6.Nc4 Now all is on e5 6...Ng6 7.d4 b5 (better 7...Bb4!? 8.c3 e4=) 8.de5+/- Be5?? (better 8...Bb4 9.c3 Qe6 10.cb4 bc4+-) 9.Nce5+- (9.Nfe5?! bc4 10.Nc4 Qe6 11.Bg7 Rg8 12.Nd6 Ke7 13.Nc8 Kd8+-; 9.Be5?! Ne5 10.Nce5 d6+-) 9...Ne5 10.Be5 Qe6 11.Bg7 Rg8 12.Bd4 Qg4 13.a4 d6 (13...ba4 14.h3 Qe6 15.Ra4+-) 14.ab5 Be6 (14...cb5 15.Bb5 Bd7 16.Qd3+-) 15.h3 Qg6 16.b6 a6 (16...Nd7+-) 17.b7 Ra7 18.Ba7 c5 19.Qd6 Nd7 20.b8Q (20.Bb5! f5 21.Bc5 Qf6 22.Ne5 ab5 23.Ra8 Nb8 24.Qe6 Qe6 25.Rb8 Qc8 26.bc8Q) 20...Nb8+- 21.Bb5! Nd7 (21...ab5 22.Qb8 Double attack (22.Qb6 Decoy; 22.Bb8 Zwischenzug)) 22.Bc5 Qf6 (22...Kd8 23.Bd7 Bd7 24.Qb8 Bc8 25.Rd1 Qd6 26.Qd6 Ke8 27.Qe7) 23.Bd7 Bd7 24.Qf6 (24.Qf6 Rg2 25.Qe7) 1-0. Fournier,Frederic (2080) – NN, Active, 2004.

5.b5 0-0 6.c4 Qf5 7.Nc3 Ng6 (7...Bb4 8.a3 Ba5 9.d4=) 8.Be2+= Re8 (8...a6 9.0-0+=) 9.0-0 e4 (9...a6 10.d4 ed4 11.Nd4+=) 10.Nd4+/- Qg5 11.f4 Qh4? (better 11...ef3 12.Bf3 Qh6+/-) 12.Nf5+- Qd8 (12...Qf6 13.Na4 Qd8 14.Ng7+- (14.Bg7?! Bb4+-)) 13.Nd5 c6 (13...f6+-) 14.Nd6 Re6 (14...cd5 15.f5 Ne5 16.cd5+- (worse 16.Ne8 Qe8 17.cd5 d6+-)) 15.Nc8 cd5 (15...Qc8 16.bc6 bc6 17.f5 cd5 18.fe6 de6 19.Rc1+-) 16.cd5 Re8 (16...Qc8 17.Rc1 Rc6 18.dc6 dc6 19.f5+-) 17.Nd6 Re7 (17...Rf8 18.f5 Qe7 19.Ba3+-) 18.f5 Nf8 19.f6 Re6 (19...gf6 20.Bf6 Ng6 21.Rc1+-) 20.de6 de6 21.Nf7! Qd5 (21...Kf7 22.fg7 Double attack (22.fg7 Passed pawn)) 22.Nh6! gh6 (22...gh6 23.f7 mate Mate attack) 23.f7 1-0. GuestTNWC – GuestNKZG, freechess.org, 2018.

5.c4 c6 =.

5.Be2 Ng6 6.0-0 (6.b5 a6+=) 6...0-0 (6...Bb4 7.a3 Ba5 8.Nc3=+) 7.c4 (better is 7.b5!?+=) 7...Bb4 8.d4 d6 9.de5 (9.Qa4!? c5 10.a3=+) 0–1. Grits – ross60, Live Game Caissa's Web, 2004.

4.Be5+/- Qd8 5.a3 +/-.

4.Be5+/- Qf5 5.Nc3 Bb4 (5...d6 6.e4 Qg6 7.Bd4+/-) 6.Bg7 Rh7 7.a3 (7.Be5 d6 8.e3 de5+/-) 7...Bc3 (7...Ba3 8.e4 Qg4 9.Ra3 Rg7 10.h3+/-) 8.Bc3+- 1–0. wiking – bruhnomp3, queenalice.com, 2009.

4.Be5 Qg6 5.Bb2 f6 (5...Bb4 6.e3+=) 6.b5 (6.a3 d5+/-) 6...a6 7.Nc3 (7.ba6 Na6 8.Nc3+/-) 7...d6 (7...ab5!? 8.Nb5 Na6+/-) 8.Nd5+- Kd8 (8...Qf7 9.e4 ab5 10.Nd4+-) 9.b6 c6?? (9...cb6 10.Nb6 Ra7+-) 10.Nc7 Ne7 (10...Bg4 11.Na8 Kc8 12.Nd4+-) 11.Na8 Nf5 (11...Bg4 12.Nd4+-) 12.e4 (12.d3 Bd7+-) 12...Ne7 (12...Nh4 13.Qe2 Ng2 14.Kd1+-) 13.d3 Nd7 (13...Bd7 14.Qd2+-) 14.Qd2 Ne5 15.Ne5 de5 (15...fe5 16.0-0-0+-) 16.Nc7 Kd7 (16...Bg4 17.f3 Bd7 18.d4+-) 17.0-0-0 Qf7 (17...c5 18.d4! ed4 19.Bd4+-) 18.d4 Qa2 19.de5 Nd5 20.Qc3 Bb4 21.Qb4 1–0. Janek – yxdjango, internet, 2017.

4.Be5+- Qd8 5.Bb2 +-.

4.Be5+- Qe6 5.Nc3 Ng4 6.Nb5 Qc6?? 7.Nc7 Ke7 8.Na8 Ne5 9.Ne5 Qf6 10.Nf3 Ke6 11.Nc7 Kd6 12.Ne8 Ke6 13.Nf6 gf6 14.Nd4 Ke5 15.e3 Bb4 16.Qg4 d6 17.Nf3 Kd5 18.Qc4# 1–0. mtrc – Sanjeev, internet, 2002.

4.Be5+- Qf5 5.Nc3 Ng4 6.e4 Qg6 7.a3 f6? 8.Bc7 f5 9.Nh4 Qf6 10.Nf5 (10...Qg6 11.Bc4+-) 1–0. Wall,Bill – Cman, internet, 2001.

3.a3 a6 4.e3 Nc6 (4...d6 5.Be2=) 5.b5 (5.Nf3 d6=) 5...ab5 6.Bb5 g6 (6...Bd6 7.Nf3=+) 7.Nf3 (7.Bc6 dc6 8.Be5 Bg7+=) 7...h6 (better 7...e4!? 8.Ng5 d5=) 8.Bc6 (worse 8.Be5 Ne5 9.Ne5 Ra5=+) 8...dc6 9.c4 (9.Ne5 Bg7+-) 9...Bg7 (9...e4 10.Ne5=+) 10.d4 (better 10.Be5!? 0-0 11.0-0+=) 10...e4 (10...ed4 11.ed4 0-0 12.0-0=+) 11.Nfd2 (11.Ne5 c5=) 11...0-0 12.0-0 Qd6 (12...c5 13.f3=) 13.c5 Qe6 14.Nc3 Qf5 (14...b6 15.f3=) 15.Qb1 Will e4 fall? (15.Qc2=) 15...Qg5 (better 15...Re8!?=) 16.Nce4 Qh5 (16...Ne4 17.Ne4 Qe7 18.Ng3+-) 17.Nf6 Bf6 18.Ne4 (18.Qe4 Rd8+-) 18...Bg7 19.Ng3 Qg5 20.Bc3 Bd7? (better 20...Re8+-) 21.Qb7+- Rfb8 (21...Rfc8 22.a4+-) 22.Qc7 Rd8 (22...Qe7 23.a4+-) 23.Rfb1 (23.Ne4 Qg4 24.Nd6 Bf8+-) 23...Rac8 (23...Qd5 24.Rb4+-) 24.Qf4 (24.Qb7!? Ra8+-) 24...Qf4 25.ef4 h5 (25...Be6 26.Rb4+-) 26.a4 h4 27.Ne2 Bg4 28.f3 Bf5 29.Rb7 (29.Rb4 Re8 30.Kf2 Ra8+-) 29...Bd3 30.Kf2 Re8 (30...Be2 31.Ke2 Bd4 32.Bd4 Rd4 33.Ra2+-) 31.Ng1 (31.Nc1 Bc4 32.Rb4 Bd5+-) 31...Bh6 (31...Rcd8 32.Rb4+-) 32.g3 h3 (32...Bg7 33.a5+-) 33.a5 g5 (33...Ra8 34.Rb6 (worse 34.Nh3 Re2 35.Kg1 Rc2+-) 34...Re6 35.Nh3 Re2 36.Kg1+-) 34.a6 (34.fg5 Bg5 35.f4 Bf6+-) 34...gf4 35.a7 fg3 (35...Kf8 36.Rb6 fg3 37.Kg3+-) 36.Kg3 Ra8 37.Ba5 (better 37.Nh3!? Bc4+-) 37...Ba6 (37...Be3 38.Bb6+- (38.Kh3?! Bd4 39.Rc1 Ba6+-)) 38.Rb8 (better 38.Rc7 Re6 39.Nh3+- (39.Kh3?! Bf4+-)) 38...Reb8 39.ab8Q Rb8 40.Bb6 (40.Bc7!? Ra8 41.Nh3 Kh7+-) 40...Bc4 41.Nh3 Bg7 (41...Kh7 42.Bc7 Rb3 43.Be5+-) 42.Rd1 (42.Ra4!? Bb3 43.Rb4 Ba2+-) 42...Bb3 (42...Rb7 43.Ba5+-) 43.Rd2 (43.Rd3 Bc4 44.Rd2 Rb7+-) 43...Bh6 (43...Ra8 44.Bc7+-) 44.Re2 (44.Rb2 Bc4+-) 44...Bg7 45.Re4 Bc2 46.Rg4 (46.Rf4 Rb7 47.Bd8 f5+-) 46...f5 47.Rg7 (47.Rf4!?+-) 47...Kg7+- 48.Ng5 (48.Nf4 Bb3+-) 48...Kg6 (better 48...Rg8+=) 49.Kf4 (49.Ne6 Rg8 50.Nd8 Ba4+=) 49...Ra8 (49...Rh8 50.Ne6 Rh2 51.d5=) 50.Ne6 (50.Nh3 Bd1 51.Bc7 Ra2+=) 50...Rh8 (50...Bb3!? 51.Nd8 Bd5=) 51.Kg3+- Bb3 52.h4?? (better 52.Nf4 Kf7 53.Nd3+=) 52...Be6–+ 53.Bc7 Kh5 (53...Ra8 54.Be5–+) 54.Be5 (54.Bf4 Bd5–+) 54...Ra8 55.Bf6 Kg6 (55...Ra3 56.Kf4–+) 56.Be5 Kh5 57.Bf6 Ra3 58.Kf4 Bd5 (58...Kg6 59.Bg5–+) 59.Kf5 Rf3 60.Ke5 ½–½. Trkn – digapony, itsyourturn.com, 2000.

3.a3 a6 4.Be5 Nc6 5.Bb2 Be7 6.e3 0-0 7.Nf3 d5 8.c4 Bg4 9.Be2 dc4 10.Bc4 b5 11.Be2 Bd6 12.h3 Bh5 13.0-0 Rc8 14.d4 Nd5 15.Nc3 Nce7 16.Qb3 Bf3 17.Bf3 (17.gf3?! Nc3 18.Bc3 Qd7+=) 17...Nc3 18.Qc3 Ng6 19.d5 (19.Bb7 Rb8 20.Qc6 a5 21.ba5 Ne7 22.Qb5 c6+-) 19...f6 (19...Be5 20.Qb3+/-) 20.Rac1 Be5 21.Qc2 Bb2 22.Qb2 Ne5 23.Qe2 Nc4 24.Qa2 Qd6 25.Rfd1 Kh8 26.Rc4 (26.Be2!? Ne5 27.f4+-) 26...bc4+/- 27.Qc4 c6? (better is 27...f5+/-) 28.Qa6 Ra8 29.Qc6 Qe5 30.a4 Rfc8 (30...Qb2+-) 31.Qe6 Qc3 32.d6 Qb4 (32...Rab8 33.d7 Rd8+-) 33.Ba8 Ra8 34.d7 Qf8 35.Qc6 (better is 35.Rc1 g5 36.Rc8 Kg7+-) 35...Rd8 36.a5 Qa3 1–0. Fournier,Frederic (1795) – Rackman (1735), Active, 2011.

3.a3 a6 4.Be5 d6 5.Bf6 Qf6+=.

3.a3 Bc5?? 4.bc5+- 0-0 (4...Nc6 5.Nc3+-) 5.Be5 Nc6 6.Bb2 d5 7.cd6! Qd6 (7...cd6 8.e3 Combination; 7...Qd6 8.Nf3 Combination) 8.Nf3 Bf5 9.e3 b5 (9...Rfe8 10.Nc3+-) 10.d4 (10.Bb5 Rfb8 11.Nc3 Rb6+-) 10...Rfe8 (10...a6 11.Be2+-) 11.Bd3 (better is 11.Bb5 Rab8 12.Nc3+-) 11...h5 (11...Bd3 12.Qd3 a6+-) 12.Bf5 Re3 (12...Ne7 13.Bd3 Rab8+-) 13.fe3 Qe7 14.Qd3 h4 15.Nbd2 b4 16.0-0 ba3 17.Ba3 Qd8 18.Ne4 (better is 18.Ng5 Qe8 19.Nde4 Ne5 20.de5 Rd8+-) 18...Qe8 19.Nf6 gf6 20.e4 Na5 21.Nh4 Qa4 22.Qg3 (22.Be7 Qd4 23.Qd4 Nc4 24.Rf3 Ne5 25.Qe5 fe5 26.Rg3 Kh8 27.Bf6) 22...Kh8 23.Ng6! fg6 24.Qg6 Qc4 (24...Qd4 25.Kh1 Qd7 26.Rf3 Qf5 27.Rf5 Nc4 28.Rh5) 25.Qh7 1–0. Fournier,Frederic (1855) – Delabre,Oscar, FRA Coupe, 2013.

3.a3 c6 4.Be5 d5 5.Nf3 Bd6 6.Bd6 Qd6 7.e3 0-0 8.d4 Bg4 9.Nbd2 Nbd7 10.Bd3 h6 (10...a5 11.0-0+/-) 11.h3 Bh5 (11...Bf3 12.Qf3 a5 13.b5+/-) 12.g4 Bg6 13.Bg6 fg6 14.c4 (14.g5!? Nh7 15.Rg1+/-) 14...dc4+= 15.Nc4 Qd5 16.Ncd2 g5 17.Qb3 Qb3 18.Nb3 Nd5 (18...Ng4!? 19.hg4 Rf3+/-) 19.Nbd2 N7f6 (19...Rae8 20.Rc1+/-) 20.Ne5+- Rfe8 21.0-0 Rad8 22.Rfc1 Nd7 23.Ndc4 b5 (better 23...Kf8+-) 24.Nd7 Rd7 (24...bc4 25.Nc5+-) 25.Ne5 Rd6 26.Rc6 Rc6 27.Nc6 Rc8 (27...a6 28.Rc1+-) 28.Rc1 (better 28.Na7 Rb8 29.Rc1+-) 28...Kf7 (28...Kf8 29.Rc5 a6 30.Kg2+-) 29.Rc5 (better 29.Ne5 Ke7 30.Rc8+-) 29...Ke6 30.Kg2 (better 30.Na7!? Rc5 31.bc5 Nc3+-) 30...a6 31.Kg3 (31.Ne5 Rc5 32.bc5 Nc3+-) 31...Rf8 (31...Nf6 32.f3+-) 32.Ne5 Re8 (32...Rd8 33.Kf3+-) 33.Rc6 Ke7 34.Ra6 Nc3 35.Ra7 Ke6 36.Rg7 Ra8 37.Rg6 Kd5 38.Rh6 Ra3 39.f3 (39.Kf3 Ra2 40.Rb6 Ra8+-) 39...Nd1?? (better 39...Ra2 40.h4 Ne2 41.Kg2 Nd4 42.Kh3 Nc2+-) 40.e4 (40.Rb6 Nc3 41.h4 gh4 42.Kh4 Ra4+-) 40...Kd4 41.Nc6 (41.Rd6!? Ke5 42.Rd1 Kf6+-) 41...Kc4 42.e5 (better 42.h4 Nc3 43.hg5 Ne4 44.Kh4+-) 42...Kd5 (42...Nc3 43.h4 Ne4 44.Kg2 Ra2 45.Kf1 Ng3 46.Kg1 Ne2 47.Kf2 Nf4 48.Ke1=) 43.Ne7 (better 43.Rd6 Kc4 44.Rd4 Kb3 45.Rd1+-) 43...Ke5 44.Rg6 (better 44.h4!? Nc3 45.Nc6 Kd5 46.hg5 Ne4 47.Kf4 Nd2+-) 44...Nc3 45.Nc6 Kd5 46.Ne7 (46.Kf2 Ra2 47.Ke1 Re2 48.Kf1 Re3+-) 46...Ke5+/- 47.Nf5 (47.Kf2 Ra2 48.Ke3 Nd1 49.Kd3 Nf2 50.Kc3 Nh3 51.Nc6 Kf4+/-) 47...Rb3 (47...Ne4 48.Kg2 Ra2 49.Kf1 Rf2 50.Kg1 Rf3 51.Rb6=) 48.h4 (48.Nd6 Kd5 49.Nb5 Ne4 50.Kg2 Rb2 51.Kf1 Nd2 52.Ke2 Ne4 53.Ke3 Rb3 54.Nc3 Nc3 55.Rg5 Kc6 56.Rg6 Kd5+-) 48...gh4 (better 48...Ne4 49.Kg2 Rb2 50.Kf1 Rb1 51.Ke2 Rb2 52.Kd1 Nf2 53.Ke1 Nd3 54.Kd1 Nf2 55.Kc1 Nd3 56.Kd1 Nf2=) 49.Kh4+/- Rb4 50.Rg5 (better 50.Rc6 Na4 51.Kg5+/-) 50...Kf4= 51.Rg8 White plans g5 51...Kf3 52.Kh5 Ne4 53.Nh4 (53.Rf8 Ke2=) 53...Kg3 54.g5 Ng5 55.Rg5 Kh3 56.Nf5 (56.Ng6 Rb1+=) 56...Rb1 57.Nd6 Attacking the isolated pawn on b5 57...b4 58.Ne4 b3 (58...Rb2 59.Rg3 Kh2 60.Rd3=) 59.Nf2 (59.Rb5!?+/-) 59...Kh2+= 60.Kg4?? (60.Rb5 Kg3 61.Ne4 Kf4+/-) 60...Kg2 (better 60...Rg1 61.Kf4 Rg5-+) 61.Nd3 Kf1 62.Kf3 Rd1 63.Ke3 Ra1 64.Rh5 Ra2? (64...Ra3 65.Rf5 Kg2 66.Rf2 Kg3 67.Rb2+=) 65.Rh1?? (65.Kf3 Rg2 66.Re5+-) 65...Kg2+/- 66.Rb1 b2 67.Re1 (67.Nb2 Kg3+/-) 67...Ra1 68.Rb1?? (better 68.Re2 Kg3 69.Rb2+/-) 68...Rb1-+ 69.Kd2 Re1 (better 69...Rd1 70.Kd1 b1Q 71.Ke2 Qb6-+) 70.Kc3?? (better 70.Ne1 Kg3 71.Kc2=) 70...b1Q-+ 71.Kd4 (71.Ne1 Qe1 72.Kd4-+) 71...Rd1 72.Ke5 (72.Kd5 Qd3 73.Ke6 Re1 74.Kf6 Qd6 75.Kg5 Re5 76.Kg4 Qd4) 72...Rd3 (72...Qd3 73.Kf6 Rf1 74.Ke5 Re1 75.Kf6 Qd6 76.Kg5 Re5 77.Kg4 Qd4) 73.Kf6 (73.Ke6 Qb6 74.Ke7 Qc6 75.Kf8 Rd7 76.Kg8 Qa8) ½-½. black_bishop_88 (2660) - sayed_atar (1975), Hourly SuperBlitz Arena, lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2)

3.a3 Ne4 4.Be5 Qh4 5.Bg3 Ng3 6.hg3?? (6.fg3 Qd8+=) 6...Qf6 (6...Qh1 7.Nf3-+) 7.Nf3?? (better 7.Nc3+=) 7...Qa1-+ 8.Nc3 Qd1 (8...Qa3?! 9.Nb5 Qb4 10.Nc7 Kd8 11.Na8=) 9.Kd1 c6 10.Nd5 (10.Rh5-+) 10...c5 (better 10...cd5 11.e3 a5-+) 11.Nc7+= Kd8 12.Na8 Nc6 (better 12...cb4!? 13.ab4 f6+=) 13.b5+- Nd4 (13...Na5 14.b6 a6 15.Ng5+-) 14.b6 Nf3? (better 14...Nc6+-) 15.ba7 (15.ef3?! ab6 16.Nb6 Kc7 17.Nc8 Kc8+/-; 15.gf3?! ab6 16.Nb6 h5+/-) 15...b6 16.Nb6 Bb7 17.a8Q (better 17.ef3!? Kc7 18.a8Q Ba8 19.Na8 Kb7+-) 17...Ba8 18.gf3 Kc7 (18...Bb7 19.a4+-) 19.Na8 Kb7 20.Bg2 (20.e4 Ka8 21.Bb5 d6+-) 20...Ka8 21.f4 Kb8 22.Rh5 (22.Bd5 f5+-) 22...Bd6 23.Rf5 Bc7?? (23...f6+-) 24.Rf7 (worse 24.Rc5 Bb6 25.Rb5 Kc7+-) 24...Rc8 (24...g6 25.Rd7 c4 26.Rg7+-) 25.Rd7 (25.Rg7 Rh8+-) 25...Rd8 (25...Rg8 26.c4+-) 26.Rg7 Rd2 (26...Rh8+-) 27.Kd2 Ba5 28.Kd3 Bd8 29.Rb7 (29.Rb7 Kc8 30.Rh7+-) 1-0. TwelveTeen (2310) - UltrabulletBerserk (2215), Time forfeit, lichess.org, 2017. (=1.a3 e5 2.b4 Nf6 3.Bb2 Ne4)

3.a3 Ng4 4.Nf3 (4.h3 Nf6 5.Be5 d6+=) 4...Qf6 (better is 4...e4!? 5.Ne5 Ne5 6.Be5 Nc6=) 5.h3+/- Nh6 6.e3 (better is 6.Be5!? Qd8 7.Nc3+/-) 6...d6+= 7.Be2 Qg6 8.d3 (better is 8.g4=) 8...Bh3?? (better is 8...Qg2 9.Rh2 Qg6–/+) 9.Rh3 (better is 9.gh3 Nc6 10.Nc3+-) 9...Ng4?? (9...Qg2 10.Rg3 Qh1 11.Bf1+-) 10.Rh1 (10.Nh4 Nf2 11.Kf2 Qf6 12.Ke1 d5+-) 10...Nc6 (10...Be7 11.Nh4 Bh4 12.Bg4+- (12.Rh4?! Ne3 13.fe3 Qg3 14.Kd2 Qh4=)) 11.Nbd2 (better is 11.b5 Ne7 12.Nh4 Ne3 13.fe3 Qg3 14.Kd2 g5+-) 11...Be7 12.c4 d5 (12...f5+-) 13.cd5 (13.cd5 Nb8 14.Be5 Ne5 15.Ne5 Qg2 16.Bf3+-) 1–0. Fournier,Frederic (1875) – dios4 (1785), Active Blind, 2008.

3.b5 a5 4.Be5 d6 5.Bb2 Qd7 6.e3 (6.Bf6 gf6 7.e3 Bg7+-) 6...b6 (6...Be7!?+/-) 7.Qf3 Ra7 8.Bf6 Bb7 9.Qh5 g6?? (better 9...gf6 10.Nf3 f5+-) 10.Qh3 (10.Bh8?! gh5 11.Nc3 Qg4+=) 10...Rg8 (10...Qh3 11.Nh3 Rg8+-) 11.Qh7 Qf5 (11...Qe6 12.Bd4 c5 13.bc6 Nc6 14.Bb5+-) 12.Bc3 Rg7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

3.b5 Bc5 (--> 1.b4 e5 2.b5 Bc5 3.Bb2 Nf6).

3.b5 Nd5 4.Be5 Bc5 5.e4 d6 6.Bb2 Qh4 7.g3?? Qe4–+ 8.Qe2 Bf5?? 9.Bg2= Qe6?? 10.Bd5+- Qe2 11.Ne2 c6 12.bc6 bc6 13.Bf3 0-0 14.d3 Nd7 15.Bc6 Rae8 16.Bd7 Bd7 17.Nbc3 Re7 18.0-0 Rfe8 19.Nf4 Bg4 20.Ncd5 Rb7 21.Rab1 g5?? 22.Nf6 Kf8 23.Ne8 Re7 24.Nd6 Bd6 25.Nd5 Re2 26.Rbc1 Bf3 27.Nc3 Rd2 28.Ne4 Bb4 29.Ng5 Bd5 30.a3 Bc5 31.Nh7 Kg8 32.Nf6 Kf8 33.Nd5 Re2 34.Rfe1 Bf2 35.Kf1 Rd2 36.Re2 1–0. valpa – dc, HCL–C2339 playchess.de, 2003.

3.c3 Nc6 4.d4 (4.b5 Na5 5.Qa4 c6–/+) 4...d5 5.Qc2. Champion,William – Dosis,Spyridon, IECG, 2008.

3.c3 Be7 4.d3 –/+.

3.c4 Qe7 4.Nf3 Qb4 5.Qc2 Ne4?? 6.Be5?? Nc5 7.Bc7+/- Qa4 8.Qa4 Na4 9.e3 g6 10.Nc3 Bg7+/- 11.Nd4 Nc3 12.dc3 Na6 13.Bg3 0-0 14.Bd3 Re8 15.0-0 Nc5+= 16.Bc2 Ne4 17.Be4+/- Re4 18.Rab1 d6 19.Bd6+- Bd7? 20.Rb7 Rd8 21.c5 Be5 22.Be5 Re5 23.c6 Bc8 24.Ra7 Rc5 25.Rb1 Rc3 26.h3 Rd5 27.Ra8 Rd8 28.Rbb8 (28…Rd3 29.Rc8 Rc8 30.Rc8 Kg7 31.c7+-) 1–0. ahmed sharkawy_1 – ian5300, ChessWorld.net, 2005.

3.Bd4?? ed4 4.c3 d5 5.cd4 Bb4 6.Qa4 Nc6 7.Qc6 (7…bc6 8.Nf3–+; 7.e3–+). opop – Mirabell. Caissa's Web, 2004.

3.e3 e4 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6).

3.e3 Ne4 4.f4? (better 4.a3 d6 5.Nf3=) 4...Qh4-+ 5.g3 Ng3! 6.hg3 (better 6.Nf3 Qh6 7.Rg1 Nf1 8.Rf1-+) 6...Qh1 7.Ne2 Qh2 (7...d6 8.d3-+) 8.fe5 (8.Be5 d6 9.Bb2 h5-+) 8...Nc6 (8...h5 9.Nbc3-+) 9.a3 (better 9.b5 Ne7 10.e4-+) 9...Ne5?? (better 9...d6-+) 10.Be5+= Be7? (better 10...d6 11.Bd4 d5=) 11.g4?? (better 11.Nbc3+-) 11...Qe5 12.Nbc3 (12.d4 Qe3 13.Qd2 Bh4 14.Kd1 Qf2-+) 12...Qh2 (better 12...Bh4 13.Ng3 Qg3 14.Ke2 d5-+) 13.d4 Bh4 14.Kd2 Bg5 (14...d6 15.Nd5 Bd8 16.c4-+) 15.Kd3 Qd6 (15...d5 16.Nd5 Bg4 17.c4-+) 16.Qd2 (16.Kd2 Qe7 17.Nd5 Qd8-+) 16...Qh6 (16...Qa6 17.b5 Qg6 18.Kc4 Qe6 19.Kd3 Qg4 20.Nf4 Bf4 21.ef4 Qg6 22.Kc4 d5 23.Kb3-+) 17.Ne4 (17.Bg2 d6-+) 17...Qg6 (better 17...d5 18.Ng5 Qg5 19.Nc3-+) 18.Bg2 (18.N2c3 c6 19.d5 Bf6-+) 18...Bh6 (18...d5 19.c4 de4 20.Be4-+) 19.Bf3 (19.N2c3 c6 20.d5 Qg4 21.Nd6 Ke7-+) 19...Qa6 (better 19...d5 20.N2c3 de4 21.Be4 Qg4-+) 20.Kc3 Qg6?? (20...d5 21.Nc5 Qd6 22.Qd3-+) 21.Kb2?? (21.Kd3 d5 22.N2c3 de4 23.Be4 Qg4-+) 21...Qa6?? (21...d5 22.Nc5 c6 23.Nf4-+) 22.Qc3?? (22.Kc3 d5 23.Nc5 Qd6-+) 22...Qg6?? (better 22...d5 23.Nc5 Qd6-+) 23.Qc6?? (23.Qd2 d5 24.Nc5-+) 23...Qc6 (better 23...dc6 24.g5 Bg5 25.Rg1-+) 24.Nf6 Qf6 25.Nc3 Qa6 (better 25...Qf3 26.Re1-+) 26.Nd5 Qg6 (better 26...Qc4 27.Rh1 d6 28.Rh6 gh6 29.Nc3-+) 27.Nc7 Kf8 28.Ne6 (28.Ne6 de6 29.Rd1-+). universe64 (2000) - BlindlyZerking (2130), Rated UltraBullet game, lichess.org, 2019.

3.Be5 c5 4.bc5 Be7 5.d4+/- 0-0 6.e3 d6 7.cd6 Bd6 8.Bd6 Qd6 9.Nf3 Nc6 10.Nbd2 Bg4 11.Bd3 Rad8 12.0-0 Rfe8 13.h3 h5?? (13...Bd7 14.e4 Qc7 15.e5+-) 14.Rb1 (14.hg4 hg4 15.Nc4 Qd5+-) 14...b6? (14...Bf3 15.Qf3 Qe7+-) 15.Nc4 Qd7 16.Be2 (better 16.hg4 Ng4 17.Rb5 g6+-) 16...Bh3 (16...Bf5 17.Nce5 Ne5 18.Ne5+-) 17.gh3 Qh3 18.Nh2 (better 18.c3+-) 18...Re4+/- 19.f4 Nd5 (19...Re3 20.Ne3 Qe3 21.Kg2 Rd4+-) 20.Rf3 Qe6 21.Ne5 (21.f5 Qe8 22.Bd3 Ne3+-) 21...Nc3? (better 21...Ne3 22.Re3! Re3=) 22.Qe1?? (better 22.Bc4!? Nd1 23.Be6 Ne5 24.fe5 fe6 25.Rd1 Re5+-) 22...Nb1?? (22...Ne2 23.Qe2 Nd4 24.Qf1 Nf3 25.Nhf3 Re3 26.Rb3 Rb3 27.cb3-/+) 23.Qb1?? (23.Bc4 Ne5 24.Be6 Nf3 25.Nf3 Re6+-) 23...Ne5 (better 23...Nd4 24.ed4 Re2=+) 24.fe5+/- (24.de5 Rd2 25.Qe1 Qg6 26.Kh1 Rc2+/-) 24...f6? (24...Qg6!? 25.Kf2 Rh4+-) 25.Qb4 (better 25.Qb5 Qd7 26.Qd7 Rd7 27.Bc4 Kf8 28.Kf2+-) 25...fe5?? (better 25...Kh8 26.Bd3 Qe5 27.Be4 Qe4+-) 26.Bc4 Red4 (26...ed4 27.Be6 Re6+-) 27.Be6 (27.Be6 Kh7 28.ed4 Rd4 29.Qe7 Kh6 30.Rg3 Rd1 31.Nf1 Rf1 32.Kf1 g6 33.Bg8 g5 34.Qg5) 1-0. BeepBeepImAJeep (2650) - foilole (2140), lichess.org, 2015.

3.Be5 c6 4.a3 c5 5.bc5 Bc5 6.e3 d5 7.Nf3 Nc6 8.Bb2 0-0 9.Bb5 a6 10.Bc6 bc6 11.0-0 Bd6 12.d4 (12.Be5 Rb8+=) 12...Bg4 13.Nbd2 (13.h3 Bf5=) 13...Bc7 (13...Bh2!? 14.Kh2 Qb8 15.Kg1 Qb2=) 14.h3+= Bf3 15.Nf3 Qd6 16.c4 dc4 17.a4 (17.Qc2 Rfb8+/-) 17...Ne4 (17...Rfb8 18.Ba3 Qe6 19.Qc2+=) 18.Ba3+/- c5 19.dc5 Nc5 (19...Qe6 20.Nd4 Qe5 21.f4+/-) 20.Qd6 Bd6 21.Rac1 Ne4 22.Bd6 Nd6 23.Rfd1 Nf5 (23...Rfd8!? 24.Ne5 Rac8 25.Nc4 f6+/-) 24.Rc4 Rfd8 25.Rdc1 h6 26.Rf4 Nd6 27.Rc7 (27.Rc6 Ne8+-) 27...Rf8 (27...Rdc8!? 28.Rd7 Rd8 29.Rd8 Rd8+/-) 28.Rd4+- Nf5 (28...Rfc8 29.Rc8 Nc8+-) 29.Rdd7 g6 (29...Rad8 30.Ra7+-) 30.Ne5 Rae8 (30...Rad8 31.Rd8 Rd8 32.Nf7 (32.Rf7?! Rd1 33.Kh2 Rd5+-) 32...Rd1 33.Kh2+-) 31.f4 (31.Nf7 Kg7 32.Nd6 Kf6 33.Ne8 Re8 34.Rc6 Re6 35.Re6 Ke6+-) 31...Ng3?? (31...Rd8 32.e4 Nd6 33.Ng6 Rd7 34.Rd7 fg6 35.Rd6 Rf4 36.Rg6 Kh7+-) 32.Ng6 Re3 (32...Ne4 33.Nf8 Rf8 34.Ra7+-) 33.Nf8 Kf8 34.Rf7 Ke8 (34...Kg8 35.Rfd7 Kf8 36.Kf2+-) 35.Rg7 (35.Rh7 Kd8 36.Ra7 Re1 37.Kf2 Rf1 38.Kg3 Rf3 39.Kf3 Ke8 40.Rh8) 35...Kf8 36.Rgf7 (36.Rcf7!? Ke8+-) 36...Kg8?? (36...Ke8 37.Rh7 Kd8+-) 37.Rfd7+- Re1 (37...Kf8 38.Kf2 Nf5 39.Rf7 Ke8 40.Rf5+-) 38.Kf2 (38.Kf2 Re2 39.Kg3 Kf8 40.f5 Ke8 41.f6 h5 42.f7 Kf8 43.Rd8 Kg7 44.f8Q Kg6 45.Rg7 Kh6 46.Qf6) 1-0. BeepBeepImAJeep (2550) - T3smonto (1780), lichess.org, 2017.

3.Be5 d5 (--> 1.b4 e5 2.Bb2 d5 3.Be5 Nf6).

3.Be5 Bd6 4.Bd6 cd6 5.Nc3 d5 6.Nf3 0-0 7.e3 Nc6 8.b5+- Ne7 9.Bd3 Re8 10.0-0 d6 11.Nd4 Bd7 12.a4 Qc8 13.a5 Bg4 14.f3 Bd7. marcosr – oracleinshadows, net–chess.com, 2005.

3.g3 e4 (--> 1.b4 e5 2.Bb2 e4 3.g3 Nf6).

3.g4 d6 4.g5 (4.h3 h5-/+) 4...Nd5 5.a3 a5 (5...Qg5 6.Nf3 Qh5 7.e4-+) 6.h4 ab4 7.e3 (7.e4 Nf4-/+) 7...Nc6 8.Bg2 Nb6 (8...Be6 9.Ne2-/+) 9.Ne2 (9.Bc6!? bc6 10.ab4 Ra1 11.Ba1-/+) 9...ba3 10.Na3 Be6 11.Ng3 h6 12.Nb5 Ra1 13.Qa1 hg5 14.hg5 Rh1 15.Bh1 Be7 16.g6 fg6 17.Be4 Kf7 (17...Bf7 18.Na7 Qd7 19.Nc6 bc6 20.d3-/+) 18.Ke2 (better 18.Qd1!?-/+) 18...Bc4-+ 19.Bd3 Bd3 20.cd3 d5 (20...Bf6!?-+) 21.Be5-/+ Ne5 22.Qe5 c6 23.Nd4 Bf6 (23...Qc8 24.Nf3=+) 24.Qe6 Kf8 25.Nf3 (25.Nb3 Nd7=) 25...Qd7=+ 26.Qd7 Nd7 27.d4 Kf7 28.Nf1 Ke6 29.N1h2 b6 30.Ng4 (30.d3 c5=+) 30...c5 31.dc5 bc5 32.d4 c4 33.Nd2 Kf5 34.f3 g5 (34...Ke6 35.Nb1=+) 35.Nb1 Nb6 36.Nc3 Ke6 (36...Kg6 37.Nb5=+) 37.Nf2 (37.Nb5 g6=) 37...Kd6 38.Nfd1 Kc6 39.Kf2 Nd7 40.Kg3 Be7 41.Kg4 Nf6 (41...g6!?=+) 42.Kg5= Ne4 43.Kf4 (better 43.Kf5!? Nc3 44.Nc3=+) 43...Nc3-/+ 44.Nc3 Bb4 45.Ne2 Bd2 46.Ke5 c3 47.e4 c2 48.ed5 Kd7 49.Kf5 (better 49.f4-/+) 49...c1Q?? (better 49...g5 50.Ke4 Kd6-+) 50.Nc1= Bc1 51.Kg6 Bh6 52.Kf5?? (better 52.f4=) 52...Kd6-+ 53.Ke4 Bg5 (53...Bc1 54.f4-+) 54.f4 (54.Kf5 Be3 55.Ke4 Bc1-+) 54...Bf6 55.f5 Be7 56.f6 (56.Kf4 Kd5 57.Kg3 Kd4-+) 56...Bf6 57.Kd3 1-0. FeegLood (2515) - potpiedude (2350), Time forfeit, lichess.org, 2015.

3.g4 Ng4 4.e4 d5 5.ed5-/+.

4.ba5 Nc6 5.e3 Ra5 6.c4 (6.Bc3 Ra4=+) 6...d5 7.cd5 Nd5 8.Nf3 e4 9.Nd4 Nd4 10.Bd4 Be6 11.Qc2 (11.d3 ed3 12.Bd3 c5=) 11...c5= 12.Bc3 (12.Bb2 f5=+) 12...Nc3=+ 13.Nc3 f5 14.Qb2 (14.g4 fg4 15.Bb5 Kf7 16.Qe4 Qc8=) 14...Bd6 (14...Ra7 15.d3 ed3 16.Qb5 Qd7 17.Bd3=) 15.g4 (15.Qb7 0-0=) 15...0-0 16.Qb7 fg4 17.Qc6 Kh8 18.Rb1 Bf5–/+ 19.a4 Bg6 20.Ne4= Be5 21.Rc1 Ra7 22.Bg2 Raf7 23.Rf1 Rc7 24.Qa6 Qh4 25.Rc5 Be4=+ 26.Rc7 Bg2 27.Rc8 Bd6 28.Rf8=+ Bf8 29.Qc8 Qf6 30.d4 Qe7 31.Rg1 Qb4–+ 32.Ke2 Bb7 33.Qe6 Qa4 34.Rc1 Ba6 35.Kd2 Bb4 36.Rc3 h6 0–1. cgits (2580) – borisfalcov (2000), net–chess.com, 2005.

4.ba5 Nc6 5.e3 Be7 6.Nf3 e4 7.Nd4 Nd4 8.Bd4 0-0 9.Bc3 Nd5 10.Bc4 Nc3 11.Nc3 c6 12.a6 b5 13.Be2 d5 (13...Ra6?! 14.a4=) 14.Qb1 Ba6 (14...Ra6?! 15.a4=) 15.Qb2 Bf6 16.d4 ed3 17.cd3 Re8 18.d4 c5 19.Nb5? (19.Rd1 cd4 20.ed4–/+) 19...Bb5 20.Qb5 cd4 21.Rd1 de3 22.Rd5 ef2 23.Kf2 Bd4 24.Ke1 Qh4 25.Kd1 Qe4 26.Bf3 Qe3 27.Qb4 (27.Qe2 Qa3 28.Qc2 Qa1 29.Qc1–+) 27...Ra3 28.Rd4 Ra1 29.Kc2 Rh1 30.Be4 Re1 31.Bd3 Rc8 32.Rc4 Rc4 33.Bc4 Qe4 34.Kd2 Re2! 35.Be2 Qb4 36.Ke3 g5 37.h3 f5 38.Bf3 Kg7 39.Kd3 h5! 40.Bd5 (40.Bh5 Qe4) 40...Kf6 41.Bf3 g4 42.Bd5 Ke5 0–1. Kogan,Alexander – Golubev,Mihail (2530), KFEC internet Cup, 1999.

4.b5 b6 5.Be5 Bb7 6.e3 Be7 7.Nf3 0-0 8.Be2 d6 9.Bb2 Nbd7 10.d4 c5 11.bc6! Bc6 12.Nbd2 Rc8 13.0-0 Ba4 14.Nb3 Qc7 15.Rc1 b5 16.Bd3 Nb6 17.Qe2 (better is 17.Na5!? Nc4 18.Nc4 bc4 19.Bf5+/-) 17...Nc4= 18.Bc4 (18.Rb1!?=) 18...bc4+= 19.Na5? (better is 19.d5 Nd5 20.Nbd4+=) 19...Qa5–+ 20.Rfd1 c3 21.Ba1 Ne4 22.Qd3 f5 (better is 22...d5 23.Rb1 Rb8–+) 23.Ne1?? (23.Rb1–+) 23...Bb5 24.Qb5 Qb5 25.f3 Nd2 26.Nd3 Bf6 27.Bc3 Nf3! 28.gf3 Rc3 29.Kf2 Re8 30.h3 Qd5 31.Rd2 Bh4 32.Kg2 Re3 33.Rcd1 Qf3 (33...Qf3 34.Kg1 Rc2 35.Rc2 Qd1 36.Kh2 Qc2 37.Kh1 Rd3 38.Kg1 Rd1) 0–1. Fournier,Frederic (1700) – tigre08 (1665), Active, 2007.

4.b5 c6 5.Be5 cb5 6.e3 b4 7.Nf3 ba3 8.Na3 Nc6 9.Bb2 Bd6 (9...d5 10.Bb5=) 10.Nb5+= Bb8 11.g4 (11.Be2 d5+=) 11...0-0= 12.g5 (12.Ra4 d6=) 12...Ne4=+ 13.h4 d5 14.Ra4 Nb4 (14...Nc5 15.Ra2 Re8 16.h5=+) 15.Nfd4 Bd7 16.Qa1 Be5 17.Kd1?? (17.c3 Bd4 18.cb4 Bb2 19.Qb2 b6=+) 17...Bg4 (better 17...Nf2 18.Kc1 Nh1-+) 18.Kc1 (18.Ke1!?-/+) 18...Nf2-+ 19.Rg1 Bd7 20.Ne6?? (20.Rg2 Ne4 21.Ba3 Ra6 22.Bb4 ab4 23.Ra6 ba6 24.Qa6 Re8-/+) 20...Be6 (better 20...Bb2 21.Qb2 fe6-+) 21.Be5-/+ Rc8 22.Nd4 (22.Bc3!? b6 23.h5-/+) 22...Nfd3 23.Bd3 Nd3 24.Kd1 Ne5 25.Ne6 fe6 26.Qe5 Qe7 (better 26...Qb6!? 27.Ra1 Rf5-+) 27.Ra5=+ Qf7 (27...Rf5 28.Qd4=+) 28.Kc1 (28.g6 hg6 29.Qg3 Kh7=) 28...Qf2 (28...Qg6 29.Ra2-/+) 29.Rd1 (29.Qe6 Kh8 30.Rh1 d4=) 29...Qf7 30.Ra3 (30.Rg1 Qg6 31.Ra2 Rc6-/+) 30...Qc7 (better 30...Qe7!? 31.Ra2 Rf5-/+) 31.Qc7= Rc7 32.Rb3 Rc4 33.d4 Rfc8 34.Rd2 R8c7 35.Rf2 g6 36.Kd1 Kg7 37.Rd2 (37.Rb6 e5 38.de5 Rh4 39.Rd6+=) 37...b5 (37...Rc3=) 38.Rdd3?? (better 38.Rb5!? Rc3 39.Re2+/-) 38...b4 (38...Rc2 39.Rb5 Rh2 40.Rdb3 Rh4 41.Rb7 Rb7 42.Rb7 Kf8 43.Ra7-/+) 39.Rd2 (39.Rb2 Rc3=) 39...Rc3 (39...h6 40.Rb2=+) 40.Ke2 Rb3 41.cb3 Rc3 42.Rd3 h6?? (better 42...Rc6=) 43.Rd2 (better 43.gh6 Kh6 44.Rc3+-) 43...Rb3-/+ 44.gh6 (44.gh6 Kh6 45.Ra2-/+) 1-0. FeegLood (2615) - TheYellowKing (2355), Time forfeit, lichess.org, 2015.

4.b5 Bd6 5.e3 b6 6.Nf3 Qe7 7.Be2 Bb7 8.d3 0-0 9.0-0 c6 10.a4 Bc7 11.Nbd2 d5 12.Re1 e4 13.Nd4 (better 13.Bf6 gf6 14.Nh4+=) 13...c5?? (better 13...Qe5 14.Kf1 Qh2-+) 14.Nf5+= Qe6 15.Ng3?? (better 15.Bg4 Ng4 16.Qg4+/-) 15...Nbd7=+ 16.c4 ed3 17.Bd3 Ne5 18.cd5? (18.Bf5 Qd6=) 18...Nd5?? (18...Qd5 19.Be4 Ne4 20.Nde4-+) 19.Bf1?? (19.Bf5!? Qe7 20.f4=) 19...Rad8?? (19...Nb4 20.Qb1-+) 20.Qc2? (better 20.f4 Nd7 21.Qf3=+) 20...Nb4-+ 21.Qb1?? (21.Qc3 Nbd3-+) 21...Nbd3 (21...Rd2 22.Bc3 Rf2 23.Be5 Rf1 24.Rf1 Be5 25.Qf5-+) 22.Rd1?? (better 22.Be5 Ne5 23.Qc2-/+) 22...Qf6 (better 22...Nf2 23.Qf5 Nd1 24.Qe6 fe6 25.Rd1-+) 23.Be5?? (23.Bd3 Rd3 24.Be5 Be5 25.Qd3 Ba1 26.Nc4+-) 23...Ne5 (better 23...Qf2 24.Kh1 Ne5-+) 24.Nde4 Qg6 25.Nc3 Rd1 26.Qd1 Rd8 27.Qb1 Nd3 28.Nce2? (better 28.Qc2 h5 29.Rd1-/+) 28...Qf6-+ 29.Ra3 (29.Nf4 Nf4 30.ef4 Qf4 31.Qf5-+) 29...Qf2 30.Kh1 Qe3 31.Rd3 Qd3 32.Qc1 Qd1 33.Qg5 Bg3 34.Ng3 f6 35.Qf4 Qd4 36.Qc1 (36.Qc7 Rd7 37.Qb8 Kf7-+) 36...Bd5 (36...Qa4 37.Qe3 Kf7 38.Qe2-+) 37.h3 (37.Qe1 Kf8 38.Nf5 Qe4-+) 37...Qf2 38.Kh2 Bf7 39.Ne4 Qd4 40.Qe1 (40.Qc2-+) 40...Qe5 41.Kg1 (41.Kh1 Rd4 42.Kg1 Re4-+) 41...Rd4 42.Nf6 Qf6 43.Qe3 Ra4 44.Qg3 Qd4 45.Kh1 h6 46.Qb8 Kh7 47.Qb6 Ra1 48.Qd8 (48.Qh6 gh6 49.Kh2 Rf1 50.b6 Qe5 51.g3 Qe2) 48...Rf1 49.Kh2 Qf4 50.g3 Qf2 0-1. azer3136 (2195) - sipiwi94 (2180), Rated Blitz game, lichess.org, 2016.

4.b5 Bd6 5.e3 Ng4 6.Qg4 g6 7.Qc4 c5 8.Qd5 Na6 9.Qd6 Qe7 10.Qe7 Ke7 11.ba6 ba6 12.Be5 Bb7 13.Bh8 Rh8 14.Nc3 Be4 15.Ne4 (15...Rc8 16.Ba6+-) 1–0. pierre – Wendyaw, internet, 2008.

4.b5 e4 5.d3 ed3 6.cd3 d5 7.Nf3 Bd6 8.e3 0-0 9.Be2 c6 10.a4 cb5 11.ab5 b6 12.0-0 Nbd7 (12...Re8 13.Qc2=) 13.Nd4 Bb7 (13...Qc7 14.h3=) 14.Nc3 (14.Nf5 Bb4+=) 14...Rc8 15.Bf3 (15.Nf5 Bb8 16.f4 Re8+=) 15...Ne5 16.Na4 Bc7 17.Rc1 Qd6 18.g3 Qb4 (18...Nf3 19.Qf3 Rfe8 20.Nf5+=) 19.Bc3 Qd6 20.Bg2 g6 (20...Qe7+=) 21.Qb3 (21.Qd2 Rfe8+/-) 21...Rfe8 (better 21...Nd3!? 22.Rcd1 Nc5 23.Nc5 bc5=+) 22.Bb2+/- Neg4 (22...Bb8 23.Ba3 Qd8 24.Rc8 Bc8 25.f4+/-) 23.h3 Nf2 (23...Nh6!?+/-) 24.Rf2+- (24.Kf2 Qg3 25.Kg1 Qh2 26.Kf2 Bg3 27.Kf3 Bh4 28.Rc8 Qg3 29.Ke2 Qg2 30.Kd1 Qf1 31.Kd2 Qe1 32.Kc2 Rc8 33.Nc6 Bc6 34.Nb6 Bb5 35.Nc8 Qe2 36.Kc1 Qe3 37.Kc2 Qe2 38.Kb1 Bd3 39.Ka1 Qf1 40.Ka2 Bc4 41.Ne7 Kf8 42.Ng6 hg6 43.Qc4 Qc4 44.Kb1 Ne4 45.Be5 Qb3 46.Ka1 Nd2 47.Bg7 Ke8 48.Bb2 Qa4 49.Ba3 Qa3) 24...Nh5 25.Nf3 (25.Nc6 Bc6 26.bc6 Re3 27.Qd5 Qd5 28.Bd5 Rg3 29.Kf1 Nf4 30.Nb6 Bb6 31.Rf4 Rg1 32.Ke2 Re8 33.Re4 Rg2 34.Kf3 Rf2 35.Kg3 Re4 36.de4 Rb2+-) 25...Qg3? (25...Re3 26.Qc3 f6 27.Qd4+/-) 26.Qc3 (26.Bd4 Qd6 27.Qb2 f6+-) 26...f6 (26...Qf2!? 27.Kf2 Bg3 28.Kg1 Rc3 29.Bc3 Re3 30.Nb6 Nf4=) 27.Qd4+- Be5? (27...Re6 28.Rfc2 Qd6 29.Nc3+-) 28.Qg4?? (better 28.Ne5 Rc1 29.Bc1 Qe5 30.Qb6+-) 28...Bb2 29.Rc8 Rc8 30.Ne1?? (better 30.Qg3 Ng3 31.Rb2+- (31.Nb2?! Nf5+/-)) 30…Qg4 (30...Qg4 31.hg4 Bc1-/+) 0-1. chesswizard25 (2150) - sbbhqk (2190), Rated Blitz game, lichess.org, 2016.

4.b5 e4 5.e3 b6 6.c4 Bb7 7.Ne2 d6 (7...Bd6 8.Nd4=) 8.Ng3 Nbd7 9.Be2 Ne5 (9...Be7 10.0-0+=) 10.0-0 Be7 (10...h5 A) < 11.Nh5 Nh5 12.Be5 de5–+; B) 11.Bh5? Nh5 (11...Nc4?! 12.Bf6 Qf6 13.d4=+) 12.Be5 de5–+; C) 11.Nf5+=) 11.Qc2 Qd7 12.Nc3 Nf3 13.Kh1 Ng5 (13...Nh4 14.Rfc1+= (14.Nge4?! Ne4 15.Ne4 f5 16.Bh5 Kd8=)) 14.Rad1 (14.d3 ed3 15.Qd3 0-0+/-) 14...h5 15.d3?? (better is 15.h4 Ne6 16.f3+/-) 15...ed3–+ 16.Bd3?? Bg2! 17.Kg1 Bf3 18.Rfe1 Nh3 19.Kf1–+ Ng4 20.Re2 Nh2 21.Ke1 Bg4 22.f4 Bh4 23.Rg2 Qe7?? 24.Nd5–/+ Qd7 25.Bg7 Rg8–/+ 26.Bf6 Bd1?? 27.Kd1+- Rg3 28.Bf5 Nf2 29.Rf2 Rg1 30.Ke2 (30…Kf8 31.Bd7 Bf6 32.Rh2+-) 1–0. Sviridov,Valentin (2200) – Antosik,Alois (2300), Karvina 5th, 1982.

4.b5 e4 5.e3 d5 6.Ne2 Bd6 7.h3 0-0 8.g4 h6 (8...Nbd7 9.Nd4-/+) 9.Bg2 c6 10.0-0 cb5 11.d3 ed3 (11...Qe7 12.de4 de4 13.Bf6 Qf6 14.Nd2=+) 12.cd3 (12.Qd3 b4=) 12...Nc6 13.Nbc3 The isolani on d5 becomes a target 13...b4 14.Nd5 Nd5 15.Bd5 Bc7 (15...h5 16.Bc6 bc6 17.ab4 hg4 18.ba5 gh3 19.Kh1 Ra5 20.Rg1-/+) 16.Bg2= Qd6 17.f4 Re8 18.e4 Bb6 19.Kh1 Nd4 (19...ba3 20.Ba3 Qd7 21.Bb2=) 20.Nd4 Bd4 21.e5 Qb6 22.Bd4 Qd4 23.ab4 Qb4 24.Qb1 Qb1 25.Rfb1 Rd8 26.Be4 (worse 26.Bb7 Bb7 27.Rb7 Rd3=+) 26...a4 27.Rb4 (worse 27.Bb7 Bb7 28.Rb7 Rd3=+) 27...a3 28.Kg2 a2 (28...Kf8 29.Kf3+= (worse 29.Bb7 Rb8 30.Ra3 Rb7 31.Rb7 Bb7 32.Kf2 g5-/+)) 29.Kf3 Be6 30.Ke3 Ra7 31.Rb7 (worse 31.Bb7 Rb8 32.f5 Bc8=+) 31...Rb7 32.Bb7 Rb8 33.f5 Bb3 34.Be4 Rc8 35.Kd4 Rc2 36.Bd5 Bd5 37.Kd5 Kh7 (37...Kf8 38.d4+/-) 38.d4 (38.e6 fe6 39.fe6 Re2+-) 38...Rh2 (better 38...Kg8+-) 39.Kd6 Rb2 40.d5 White prepares e6 40...g5 (40...Kg8+-) 41.e6 fe6 42.fe6 (42.de6?! Kg7+-) 42...Kg7 43.Kd7 (better 43.e7 Re2+-) 43...Rb7 44.Kc6 Rb1 45.d6 (45.Ra2 Kf6 46.Rf2 Ke7 47.Rf7 Ke8 48.d6 Rc1 49.Kd5 Rd1 50.Ke5+-) 45...Ra1 46.d7 Rc1 47.Kd6 Rd1 48.Ke7 a1Q 49.d8Q (49.Kd8 Qa5 50.Ke7 Qa8 51.d8Q Qd8) 49...Rd8 (49...Qf6 50.Ke8 Qd8) 50.Kd8-+ Kf6 51.e7 Qa8 52.Kd7 Qb7 53.Kd6 Qe7 54.Kd5 Qe5 55.Kc4 Qg3 56.Kd5 Qh4 (56...Qh4 57.Kd6 Qh3-+) 0-1. black_bishop_88 (2470) - trizzy (2465), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 a5)

4.b5 e4 5.e3 d5 6.h3 Bd6 7.Ne2 0-0 8.Nd4 c5 9.bc6 Nc6 10.c4 (10.Nb5 Bc5+=) 10...Ne5 (10...dc4!? 11.Nc6 bc6 12.Bc4 Rb8–/+) 11.cd5+= Nd5 12.Nc3 Nc3 13.Bc3 Bd7 (13...Be6 14.Qb1 Bd5 15.Qb5+=) 14.Be2 (better is 14.Qb1!?+=) 14...Qg5+= 15.Kf1 Nd3 16.Bd3 ed3 17.f4 Qh4 (17...Qe7!?+=) 18.Qb1= Qe7 19.Qd3 Ba3 20.Kf2 Rfd8 21.Rhb1 Bb4 22.Bb4 ab4 23.Ra8 Ra8 24.Nc2 Bc6 25.Nb4 (better is 25.Rb4 Qh4 26.Kg1+=) 25...Be4–/+ 26.Qb3 Bb1 27.Qb1 Qd7 28.Qc2 Qa4 29.Qe4 Rd8 30.d3 b5 31.Qe7 Rc8 32.Qd7 Ra8 33.Qd5 h6 34.Nc6? (better is 34.Qc6+=) 34...Qa2–+ 35.Qa2 Ra2 36.Kf3 Rc2 37.Nd4 Rb2 0–1. Macedo,A Soares De (2000) – Xavier,Lucca Lucas, Semifinal Do Campeonato Potigu, 2009.

4.e3 d6 (--> 3.a3 d6 4.e3 a5).

4.e3 e4 5.Nc3 (5.b5 d5=+) 5...d5 (5...ab4 6.ab4 Ra1 7.Qa1 Bb4 8.Qa4 Bc3 9.Bc3=+) 6.Qb1 (6.ba5 Ra5 7.d3 Bd7=+) 6...c6 (6...Be7 7.b5=+) 7.Nge2 (7.b5 Bd6=+) 7...Bd6 (7...b5 8.Ng3=+) 8.d3 (8.b5 0-0=+) 8...ab4–/+ 9.ab4 Ra1 10.Ba1 Qe7 (10...ed3 11.cd3 0-0 12.b5–/+) 11.de4=+ Bb4 12.ed5 0-0 (12...Nd5 13.Kd1 Nf6 14.Nd4–/+) 13.g3 (13.dc6!? Nc6 14.g3=) 13...Qe4–/+ (worse 13...cd5 14.Bg2=) 14.Rg1 Nd5 15.Qb3 (15.Bg2 Qe7–/+) 15...Qe7 (15...Rd8 16.Bg2 Qe7 17.Qc4–/+) 16.Bb2 (better 16.Nf4!?–/+) 16...Be6–+ 17.Nd4 (better 17.Qa4–+) 17...Nc3 18.Ne6 fe6 (18...Qe6?! 19.Qb4 Nd5 20.Qd4=) 19.Bc3 Qf6 20.Bb4 Qf2 21.Kd1 Qg1 (21...Rd8!? 22.Kc1 Qg1 23.Qe6 Kh8 24.Qf5 Qe3 25.Kb2 Qd4 26.Bc3 Qb6 27.Kc1 Qe3 28.Kb2–+) 22.Qe6 Kh8 23.Bf8 Qf1 24.Kd2 Qf8 25.e4 Na6 26.Ke3 (26.Ke2 Nc5 27.Qe5 Kg8–+) 26...Nc5 (26...h6 27.Qc4–+) 27.Qc4 (27.Qe5–+) 27...h6 28.Qb4 (28.h4 Qd6 29.Kf3 b5–+) 28...Qf1 29.Kd4 (29.Qd2 Qc4–+) 29...Qf2 30.Kc4 (30.Kc3–+) 30...b5 31.Kc3 Qe1 (31...Qe1 32.Kd4 Qb4 33.Ke3 Qc3 34.Ke2 Qc2 35.Ke3 Qd3 36.Kf2 Ne4 37.Kg2 Qe2 38.Kh3 Ng5 39.Kh4 g6 40.h3 Qh5) 0–1. jaddwarrior (1720) – TheOrang (2760), ChessWorld.net, 2014.

4.Be5 ab4 5.Bb2 ba3 6.Ba3 Ba3 7.Ra3 Ra3 8.Na3 Qe7 9.Qa1 0-0 10.Nf3 b6 11.e3 Bb7 12.Be2 d6 (12...Nc6 13.Nb5=+) 13.0-0= Nbd7 14.Nb5 c6 15.Nbd4 c5 16.Nf5 Qe6 17.Ng3 g6 (17...Ra8 18.Qb1=+) 18.Rb1 Ra8 19.Qc3 (19.Qb2 Ra2 20.Qc3 Bd5=) 19...d5 (19...Qa2 20.Qb2=+) 20.h3 (20.Qb3 Ra5=) 20...Ne4= 21.Ne4 Qe4 (21...de4 22.Ne1=+) 22.d3 (22.Bb5 Nf8+=) 22...Qe6 23.Qb3 f6 24.Nd2 Kg7 25.Bf3 Ne5 (25...Bc6 26.Qb2+=) 26.d4 (26.Qb6 Qb6 27.Rb6 Ra1 28.Kh2 Ba8+/-) 26...Nf3 (26...Nc4!? 27.Nc4 dc4 28.Qb6 Qb6 29.Rb6 Ra1 30.Kh2 Bf3 31.gf3 cd4 32.ed4 Ra2=+) 27.Nf3+/- Ra6? (better 27...Bc8+/-) 28.dc5+- g5 (28...b5 29.Qb5 Ba8 30.Qb8+-) 29.Nd4 Qe5 30.cb6 h5 (30...Kg8 31.Qb4+-) 31.Qc3 g4 (31...Ra2+-) 32.Qc7 Kg6 (32...Qc7 33.bc7 g3 34.fg3 Bc8+-) 33.Qb7 Ra2 34.Qc8 gh3 35.Qg8 (35.b7 Qg5 36.Qg8 Kh6 37.b8Q h2 38.Kh1 Qg8 39.Qg8 h4 40.Nf5 Kh5 41.Qh7 Kg5 42.f4 Kg4 43.Qg6) 35...Kh6 36.b7 h2 37.Kh1 (37.Kh1 Rc2 38.b8Q Rc1 39.Rc1 h4 40.Qh8 Kg6 41.Qbg8) 1-0. black_bishop_88 (2530) - GeraMeli (2555), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 a5)

4.Be5 ab4 5.ab4 Ra1 6.Ba1 Bb4 7.Nf3 Nc6 8.e3 0-0 9.Be2 d5 10.0-0 Re8 11.d4 Bd6 (11...Bg4 12.Qd3=+) 12.Nbd2 Bf5 13.c4 dc4 14.Nc4 Ng4 15.h3 Nf6 16.Qb3 Be6 (16...Be4!?=) 17.Qb7+/- Qd7 18.Nd6 Qd6 19.Rc1 Bd5 20.Qb2 Ne4 21.Ne5 Ne5 22.de5 Qe6 (22...Qe7 23.f3 Ng3 24.Bd3+/-) 23.Bg4 (23.Rc7 Ra8+-) 23...Qg6 (23...Qe7 24.Qc2+-) 24.Rc7 h5 25.Bf3 Qf5 (25...Kh7 26.Kh2 Be6 27.Qd4 Nf2 28.e4 Ng4 29.hg4 hg4 30.Bd1+-) 26.Rc1 (26.Qd4 Ra8 27.Bb2 Ra5+-) 26...Ng5?? (26...Ba8+-) 27.Bd5 1-0. BeepBeepImAJeep (2665) - PogosBest (2505), lichess.org, 2016.

4.Be5 ab4 5.ab4 Ra1 6.Ba1 d5 7.b5+= Nbd7 8.e3 Nb6 9.Nf3 Be7 10.Be2 0-0 11.0-0 Bg4 12.d4 (12.Ne5 Be2 13.Qe2 Qd6+/-) 12...Nc4 13.Nbd2 Nd6 14.Ne5 Be2 15.Qe2 Nfe4 16.Re1 (16.Ne4 de4 17.f3 f6+/-) 16...f6 (16...Nd2 17.Qd2 Nb5 18.e4=) 17.Nef3+= f5 18.c4 Nd2 19.Nd2 (worse 19.Qd2 Nc4 20.Qd3 Qd7=) 19...c6 20.bc6 bc6 21.cd5 cd5 22.Nf3 Nc4 23.Bc3 Bd6 24.Rc1 g5 (24...Re8 25.Qc2 Qf6 26.Nd2+/-) 25.Nd2 g4? (better 25...Nd2 26.Bd2 Qe7+/-) 26.Nc4+- dc4 27.Qc4 Kh8 (27...Rf7 28.d5+-) 28.d5 Kg8 29.Qd4 Qd7 (29...Kf7 30.Ra1 Rg8 31.Ra7 Kg6 32.Rg7 Kh5 33.Rh7 Kg6 34.Rg7 Kh5 35.Rf7+-) 30.Qh8 (30.Rb1 Rc8+-) 30...Kf7 31.Qh7 Ke8 32.Qg6 Kd8 (32...Ke7 33.e4 g3 34.hg3+-) 33.Ba5 (better 33.Bf6 Rf6 34.Qf6 Qe7 35.Qf5 Qd7 36.Qg5 Ke8 37.Qh5 Ke7+-) 33...Ke7 34.Rc6 1-0. opperwezen (2520) - WikiChess (2290), lichess.org, 2018.

4.g3 ab4 5.Bg2 (5.ab4 Ra1 6.Ba1 e4=+) 5...d5 (5...ba3 6.Na3 d5 7.Nb5 Ra1 8.Qa1-/+) 6.Nf3 (6.Be5 ba3 7.Bb2 Bc5 8.Na3 c6=+) 6...Nc6 7.Ne5 Ne5 8.Be5 ba3 9.Bb2 Bh3 10.Bh3 ab2 11.Ra8 Qa8 12.0-0 Qa5 13.e4 (13.Bg2!?-/+) 13...de4-+ 14.d3 h5 15.de4 Bd6 16.e5 (16.Re1 Qe5-/+) 16...Be5-+ (worse 16...Qe5 17.Re1 Ne4 18.Qf3+/-) 17.f4 (17.Bg2 0-0-+) 17...Qc5 18.Kg2 (18.Kh1 Bd6 19.Bg2 0-0-+) 18...Bd6 19.Qe2 Kf8 20.Nd2? (20.c4-+) 20...Qc2 21.Re1 (21.Rd1 Bb4 22.Qc4 Qd1 23.Qb4 Kg8 24.Qb2 Qe2 25.Kg1 h4-+) 21...h4 (better 21...Bb4 22.Rd1 Ng4 23.Bg4 hg4-+) 22.Bf5 (22.Bd7 Kg8 23.Bb5 hg3 24.hg3 Bf4 25.Bd3 Qc6 26.Ne4-+) 22...Qf5 23.Nf3 (23.Qc4 hg3 24.hg3 Bc5-+) 23...h3 24.Kg1 b1Q 25.Rb1 Qb1 26.Ne1 Bb4 27.Kf1 Ne4 28.Qe4 Qe4 (28...Qe4 29.Kf2 Be1 30.Kf1 Bd2 31.g4 Qe1) 0-1. TwelveTeen (2300) - Fmswoonvar (2265), Time forfeit, lichess.org, 2017 (=1.a3 Nf6 2.b4 e5 3.Bb2 a5)

5.c4 d6 6.e3 Nbd7 (6...0-0 7.Nf3+=) 7.d4= ed4 (7...Ba7 8.Nf3 e4 9.Nfd2=) 8.ed4+= Ba7 9.Qe2 Kf8 10.Nf3 g6 (10...Nb6 11.Qc2+=) 11.Qd1 Kg7 12.Be2 Re8 13.Nc3 (13.0-0 Nb6+=) 13...Nb6 14.0-0 Bg4 15.Bc1 c6 (15...c5 16.bc6 bc6 17.Re1=) 16.h3 (16.Qd3 Be6 17.Nd2 Bf5+=) 16...Bf5 (16...Be6 17.c5 dc5 18.dc5 Qd1 19.Nd1= (worse is 19.Rd1 Nbd5 20.Na4 Bh3+=)) 17.Bg5 h6 18.Be3 d5 (18...Be6 19.Qb3+=) 19.c5 Nc4 20.Bc4 dc4 21.Qc1 (21.bc6 bc6 22.Ne5 Bc5 23.Bh6 Kh7+/-) 21...h5 22.Bh6 Kg8 23.Bg5 Re6 24.Re1 Qd7 25.Bf6 Rf6 26.Qh6 (26.Qh6 Be6 27.Ng5+-) 1–0. Cirulis,Ilmars (1675) – Faust,Dieter (1660), FICGS, 2014.

5.e3 d5 6.Be5+= 0-0 7.Bb2 Nbd7 8.Nf3 Nb6 9.Nc3 Bf5 10.d3 d4 11.ed4 Bd4 12.Nd4 Qd4 13.h3 (13.Rb1 Qc5+=) 13...Rae8+= 14.Be2 Nbd5 15.Nd5 Qd5 16.0-0 Qb5 17.Bf6 gf6 18.Rb1 Qe5 19.Qd2?? (better is 19.Bf3+/-) 19…Qe2–/+ (19...Qe2 20.Qa5 Re5–/+) 0–1. Azzoug,Samir – Cornelis,Werner, Autumn tournament, 2002.

5.e3 d6 6.c4 Be6 7.Nf3 h6 8.d4 ed4 9.Nd4 0-0 10.Ne6 fe6 11.Bd3 Qe8 12.0-0 Nbd7 13.Nd2 Bb6 14.Qc2 Qh5?? (better is 14...e5+=) 15.Bg6+- Qh4 (15...Qc5 16.Bd4 Qg5+-) 16.Nf3 Qg4 17.h3 (17.h3 Qf3 18.gf3+-) 1–0. combijack (1835) – pecosbill (1710), gameknot.com, 2011.

5.e3 d6 6.Nf3 0-0 7.d4 ed4 8.ed4 Re8 9.Be2 Bb6 10.0-0 Bg4 11.h3 Bh5 12.Nbd2 Nbd7 13.Re1 Ne4 14.c4 Qf6 15.Qc2 Bg6 16.Ne4 (16.Bd3 Nd2 17.Qd2 Bd3 18.Qd3 h6+=) 16...Be4= (worse 16...Re4 17.c5 Ba7 18.c6 bc6 19.Qc6+/-) 17.Qd2 White prepares the advance d5 17...Nf8? (better 17...h6=) 18.c5+- Ba7 19.b6 cb6 20.d5 Qd8 (20...Qh6!? 21.Qh6 gh6+-) 21.Bb5+- Bf3?? (better 21...Re7 22.cd6 Qd6+-) 22.Re8 (22.Re8 Qe8 23.Be8 Re8 24.gf3 bc5 25.Re1 Re1 26.Qe1+-; 22.gf3 Re1 23.Re1 dc5+/- (23...bc5? 24.Re8 Qe8 25.Be8 Re8 26.Qa5+-)) 1-0. Jan_Ek (2125) - Drakoon (2005), internet, 2020.

5.e3 d6 6.Nf3 0-0 7.Be2 e4 8.Nd4 d5 9.0-0 Nbd7 10.c4 dc4 11.Bc4 Ne5 12.Be2 Qd6 13.d3 Nfg4 0–1. phildo (1850) – zep5686 (1700), gameknot.com, 2012.

5.e3 d6 6.Nf3 Qe7 7.Be2 e4 8.Nd4 0-0 9.0-0 Nbd7 10.d3 Ne5 11.de4 Ne4 12.Nf3 Ng4 13.Nbd2?? (13.Nd4 Ngf2 14.Rf2 Nf2 15.Kf2–/+) 13...Nef2–+ 14.Rf2 Nf2 15.Kf2 (15.Qe1 Qe3 16.Nc4–+) 15...Qe3 16.Kf1 (16.Kg3 g5 17.Bd4 Bd4 18.b6 Be5) 16…Qf2 0–1. Fournier,Frederic – Karamasov (2595), Partie evaluee, 3m + 0s, 2008.

5.e3 Qe7 6.c4 d6 7.Be2 0-0 8.Nf3 Re8 9.0-0 Nbd7 10.Nc3 e4 11.Ne1 Ne5 12.Ne4 Ne4 13.d4 Bb6 (13...Bf5!?=) 14.de5+= de5 15.Nf3 Bf5 16.Qe1 f6 17.Rd1 Rad8 18.Rd8 Rd8 19.Qc1 Nc5 20.Bc3 Bd3 21.Bd3 Rd3 22.Ne1 Rd7 23.Qc2 Qe6 24.Ba1 Qg4 25.Nf3 Qe4 26.Qa2 Qd3 27.Be5 fe5 28.Ne5 Qd2 29.Qb1 Rd8 30.Qf5 Rf8 31.Qh5 Qc2 32.Qh3? Qf5 33.Qf5–/+ Rf5 34.Nf3 Rf7 35.Rd1 Rd7 36.Rd4 Kf8 37.h4 a4 38.Ng5 Ke7–+ 39.Rg4 h6 40.Nf3 Ne6 41.Ne5 Rd1 42.Kh2 Bc5 43.g3 Rd2 44.Kg1 Kf6 45.Nf3 Rd1 46.Kg2 Kf5 47.Nh2 h5 48.e4 Kf6 49.e5 Kf5 (49...Kf5 50.Rf4 Nf4 51.gf4 Rd4–+) 0–1. Ackaert,T (2030) – Klundt,K (2355), Ghent BEL, 2012.

5.e3 Qe7 6.Nf3 d6 7.Be2 e4 8.Nd4 0-0 9.Nc3 d5 10.0-0 Bd6 11.Na4 Rd8 12.Qe1 (12.f3 Bd7=) 12...Ng4 13.f4 ef3 14.Nf3 Nd7 15.c4 dc4 16.Bc4 Kh8 17.g3 f6 18.Qe2 Nde5 19.Bd5 Rb8 20.Nd4 Qe8 21.Rac1 Nh6 22.Rf4 (22.e4!?=) 22...Qe7 23.Bg2 Ba3 24.Ba3 Qa3 25.Qd1 Bg4 26.Ra1 Qd6 (26...Bd1 27.Ra3 Nc4 28.Rc3 Nd2 29.Nb2=) 27.Qb3 (27.Qc2 b6=) 27...b6 (27...c5 28.bc6 bc6 29.Qc2+=) 28.Nc3 Bh5 29.Ne4 Qe7 30.Qc3 Be8 31.Rc1 Rbc8+= 32.Qc2 Bd7 33.Rff1 Qe8 34.Qb1 Qh5 35.Nc3 Bh3 36.Nce2 Bg2 37.Kg2 Qg6 38.Qg6 hg6 39.Rc3 Rd7 40.Rfc1 g5 41.R1c2+= Nhf7 42.Ne6 Nd6 43.d4 Ng4 44.h3 Nb5 45.hg4 Nc3 46.Rc3 a4 47.e4 b5 48.d5+= b4 49.Rc4 c5 50.dc6 Rd1 51.c7= Rd6 52.N2d4 Rb6 53.Nc6 b3 (53...b3 54.Rc1 Rc7 55.Nc7 Rc6 56.Rc6 b2–/+) 0–1. Trokenheim,Marek (1770) – Van Bommel,Ton (2050), RB–2012–0-00176, 2012.

5.Be5 Bf2 6.Kf2 Ng4 7.Ke1 Ne5 8.Nc3 d5 9.e3 0-0 10.Qh5 Qd6 (10...Re8!? 11.Be2 d4 12.ed4 Qd4–/+) 11.Be2 Nbd7 12.d4 Nf6?? (better is 12...Nc4 13.Bc4 dc4+=) 13.Qe5 1–0. combijack (1780) – trqglqdyte (1655), gameknot.com, 2011.

5.Be5 Bf2+= 6.Kf2 Ng4 7.Ke1 Ne5 8.Nf3 Qf6 9.Ne5 Qe5 10.Nc3 d6 11.a4 b6 12.e3 Bb7 13.Qg4 Nd7 14.Bd3 Nf6 (14...Nc5 15.Be2+=) 15.Qf5= 0-0 16.Qe5 de5 17.Rg1 Rad8 18.Ke2 e4 19.Bc4 Ng4 20.h3 Ne5 21.Bb3 Rd7 22.Rad1 Rfd8 23.Rgf1 h6 24.Rf4 Ng6 25.Rg4 Re7?? (better is 25...Kh7=) 26.Rg6+- 1–0. sarongas (1770) – lostinadaze (1775), gameknot.com, 2013.

5.Be5 Ng4 6.Bg3?? (better is 6.d4 Ne5 7.dc5+=) 6...Nf2! 7.Bf2 Bf2 8.Kf2 Qf6 9.Nf3 Qa1 10.c3 Qa2 11.e4 0-0 12.Ne5 Qe6 13.d4 d6 14.Bc4 Qf6 15.Nf3 Bg4 16.Nbd2 Nd7 17.Re1 White intends e5 17...Nb6 18.Bd3 Rfe8 19.Kg1 Bf3 20.Nf3 c5 21.e5 Qh6 22.Re4 f5 (22...c4 23.Bc2–+) 23.Rh4 Qg6 24.ed6 Qd6 25.Bf5 h6 26.Ne5?? Re5–+ 27.Bd3 Rg5 28.g3 Rg3! 29.Kh1 Re3 30.Qd2 Rae8 31.Rg4 Re1 32.Kg2 Qd5 33.Kh3 R1e3 34.Kh4 Qd8 35.Kh5 Rh3 36.Kg6 Qf6 0–1. combijack (1725) – wallaby66 (1650), gameknot.com, 2010.

5.Nf3 e4 6.Nd4 d5 7.e3 0-0 8.Nc3 Nbd7 9.Be2 Ne5 10.0-0 Re8 11.f3 ef3 12.Nf3 Bd6 13.Nd4 Neg4 14.h3= Nh2 15.Rf4 g5 16.Rf6 Qf6–/+ 17.Nd5 Qe5 18.Bf3 Bd7 19.Bc3 f5 20.Nc6+= Nf3 21.Qf3 Qh2 22.Kf1 Re6 23.Nd4+/- Qg3 24.b6 Qf3 25.gf3 Rg6 26.bc7+/- Rc8 27.Rb1 f4 28.Nb5 Bc5 29.d4 Bh3 30.Ke2 Be6 31.e4 Bd5 32.ed5 Bb6 33.d6+- Rg7 34.Kd3 g4 35.fg4 f3 36.d5 Rd7 37.Bd4 Bc7 38.dc7 Rd5 39.Ke4 Rd7 40.Rb3 f2 41.Rf3 Re7 42.Kd3 Rcc7 43.Nc7 Rc7 44.Rf2 Rf7 45.a4 h6 46.Rf7 Kf7 47.Ke4 Kg6 48.Be3 h5 49.gh5 Kh5 50.Bd2 Kg6 51.Ke5 Kh5 52.Ba5 b6 53.Bb6 (53…Kh4 54.a5 Kg4 55.a6 Kg5 56.a7 Kg4 57.a8Q Kh4 58.Kf4 Kh5 59.Qc6 Kh4 60.Qh6#) 1–0. pierre – maczek, internet, 2009.

5.c4 Nbd7 6.e3 Nb6 7.Qc2 Be7 8.Nf3 0-0 9.Be2 e4 10.Ng5 d5 11.Bf6?? (better 11.cd5 Qd5 12.h4=) 11...Bf6-+ (11...gf6 12.Nh3 f5 13.cd5 Nd5 14.Nc3=) 12.c5 (12.Nh7 Kh7 13.Nc3 Bc3 14.dc3-+) 12...Ba1 (12...Bg5?! 13.cb6 cb6 14.Nc3-+) 13.cb6 (13.h4 Nd7 14.Qa2 h6 15.Qa1 hg5-+) 13...Qg5 14.d4 (14.bc7 Qg2 15.Rf1 Qh2-+) 14...ed3 15.Bd3 Qg2 16.Rf1 cb6 17.Bh7 Kh8 18.Bf5 Qg5 19.Bd3 Bh3 20.Nd2 (20.f4 Qh5 21.Rg1 Rac8-+) 20...Bf1 (20...Rac8 21.Qd1 Bb2 22.Nf3-+) 21.Bf1 (21.Kf1 Qh5 22.Kg2 Rfc8-+) 21...Rac8 22.Qb1 Bc3 23.Ke2 Bd2 24.Kd2 d4 25.h4 de3 26.fe3 (26.Ke2 Qg4 27.Ke1 Qf3 28.fe3 Qe3 29.Be2 Qg1 30.Kd2 Rfd8 31.Bd3 Qb1 32.a4 Rd3 33.Ke2 Rc1 34.Kf2 Qb2) 26...Rfd8 27.Ke2 (27.Bd3 Qg2 28.Ke1 Rd3 29.Qd3 Rc1 30.Qd1 Qg1 31.Ke2 Qd1 32.Kf2 Qd2 33.Kf3 Rf1 34.Kg3 Qe3 35.Kg4 f5 36.Kh5 Qh6) 27…Qg4 (27...Qg4 28.Ke1 Rc3 29.Kf2 Rd2 30.Ke1 Rd1 31.Kf2 Rb1 32.Bd3 Rd3 33.a4 Rd2) 0-1. carlos78 (2400) - changaei (2325), Rated Blitz game, lichess.org, 2015.

5.c4 Be7 6.Nc3 0-0 7.e3 c6 8.d4 ed4 9.Qd4 Nbd7 10.Rd1 Nc5 11.Nf3 Bf5 12.Qf4 Bc2 13.Rd2 Bg6 14.Rd1 (14.Be2 Nh5 15.Qg4 Nb3+=) 14...Ne6 15.Qg3 Nh5 (15...Bc2 16.Rd2 Bg6 17.Rd1=) 16.Qh3 (16.Qg4 Bf6+=) 16...Re8 17.Ne5 (17.Be2 Bf6 18.Qg4 cb5 19.cb5 Rc8–/+) 17...Bf6–/+ (17...de5?! 18.Rd8 Red8 19.g4+=) 18.Ng6 hg6 19.Qg4 (19.Qf3!?–/+) 19...cb5–+ 20.cb5 Rc8 21.Rc1 d5 22.Be2 (22.Qd1!?–+) 22...d4 23.Rd1 Qc7 24.Nd5 (24.ed4 Nhf4 25.0-0 Nd4–+) 24...Qc2 25.Bd4 Bd4 26.ed4?? (better is 26.Rd4 Nd4 27.Qd4 Qb1 28.Bd1 Qb5 29.Ba4 Qb1 30.Bd1–+) 26...Rcd8 27.Ne3 (27.Rd2 Qb1 28.Rd1 Qb3–+) 27...Qc3 28.Kf1 Rd4 29.Qf3 Ng5 30.Qb7 Rd1 31.Bd1 Qd3 32.Be2 Qb1 33.Bd1 Re3! 34.Qc8 Kh7 35.Qc2 Qb5 36.Be2 Re2! 37.Qe2 Qb7 38.Qd2 Ne4 39.Qe3 Qb5 40.Qe2 Nd2 41.Ke1 Nc4 42.Qe4 f5 43.Qd4 Qb1 44.Qd1 Qe4 45.Qe2 Qd5 46.Rg1 Nf4 0–1. vulpecula (2120) – uberlebende (1825), gameknot.com, 2014.

5.c4 Be7 6.d4 ed4 7.Bd4 =.

5.c4 Bg4 6.f3 Be6=+ 7.e3 Be7 8.d3 0-0 9.Nc3 d5 10.Na4 Nbd7 11.Qc2 c6 12.bc6 bc6 13.c5 d4 14.Ne2? Rb8–+ 15.Nc1 de3 16.Be2 Nd5 17.g3 f5 18.d4 ed4 19.Nb3 Nf4 20.Nd4–/+ Nc5 21.gf4 Na4–+ 22.Qa4 Rb2 23.0-0 Bd5 24.Bc4?! Kh8 25.Rab1 Qb6 26.Rb2 Qd4 27.Re2 Bc4 28.Rc1 Bb4! (29.Rc4 Qc4–+; 28...Be2 29.Qd4 Bf3 30.Qe3+/-) 0–1. Andersson,Lars H (2320) – Rosner,Dirk, corr 3GMM½–05, 1998.

5.d4 e4 =+.

5.e3 c6 6.Nf3 Be7 7.Be2 (7.Nc3 e4 8.Nd4 0-0=) 7...e4+= 8.Nd4 c5 9.Nb3 a4 10.Nc1 d5 11.c4 (11.0-0 0-0+=) 11...0-0 12.0-0 dc4 13.Bc4 Nbd7 14.Be2 (14.Qc2 Nb6 15.Ba2 Qd6+=) 14...Nb6 15.d3 Bf5 16.Nc3 ed3 17.Nd3 Nc4 18.Bc1 Na5 (18...Qc7 19.g4 Bg6 20.f4+=) 19.Nf4+= Nb3 20.Ra2 Bd6 21.h3 (21.Bf3 g5 22.e4 A) worse is 22...gf4 23.ef5 Be5 24.Bb2+= (worse is 24.Bb7 Rb8–/+); B) 22...Nc1+=) 21...c4 (21...Re8 22.g4 Be4 23.Bc4–/+) 22.Bf3 (22.Bc4? A) 22...Nc1 23.Rd2+= (worse is 23.Qc1 Rc8 24.Nce2 Bf4 25.Nf4 Qc7+=); B) 22...Bf4 23.ef4 Qd1 24.Rd1 Rac8–+) 22...Bf4 23.ef4 (23.Qd8 Rfd8 24.ef4 Rd3+= (worse is 24...Nc1 25.Rc1 Rab8 26.Na4+=)) 23...Qa5 24.Nd5 Rad8 25.Nf6 (better is 25.Ne7!? Kh8 26.Qe1–/+) 25...gf6–+ 26.Qe1 c3 27.Be3 (27.Qe7 Kg7 28.Qb4 Qb4 29.ab4 Bd3–+ (29...Nc1?! 30.Rc1 Rd2 31.Ra4–/+)) 27...Rfe8 28.Be2 (28.Bb7 Qb5 29.Qc3 Qb7 30.Qf6–+) 28...Nd2 29.Bd2 (29.Rd2 Rd2 30.g4–+) 29...Rd2 30.Rd2 (30.Ra1 Ree2 31.Qc1 Kg7–+) 30...cd2 31.Qd1 Qc3 0–1. yulio (1910) – uberlebende (2210), gameknot.com, 2014.

5.e3 Bd7 6.c4 c6 7.Nf3 cb5 8.cb5 Be7 9.Be2 0-0 10.0-0 Ne4 11.d3 Nc5 12.a4 Be6 13.Nbd2 Nbd7 14.d4 e4 15.Ne1 (15.dc5?! ef3 16.Bf3 Nc5+=) 15...Nd3 16.Nd3 ed3 17.Bd3 f5 18.Nf3 f4 (18...Nb6 19.Re1+/-) 19.e4 g5 (19...Rc8 20.Qd2+-) 20.d5 (better 20.Rc1!?+-) 20...Bg4+/- 21.Be2 Bh5? (better 21...Bf3 22.Bf3 Bf6 23.Bf6 Qf6+/-) 22.Nd4+- Bf7 23.Nf5 Ne5 (23...Bf6 24.Ba3 Ba1 25.Qa1+-) 24.Be5 de5 25.Bc4 (better 25.d6 Bf6 26.Rc1+-) 25...h5?? (better 25...Bd6+-) 26.d6 Bf6 (26...Bd6 27.Nd6 Bc4 28.Nc4 Qd1 29.Rad1+-) 27.Nh6 (27.Nh6 Kg7 28.Nf7 Rf7 29.Bf7 Kf7 30.Qd5 Kg6 31.Qb7+-) 1-0. azer3136 (2245) - jedrzejczyktactics (2160), Rated Blitz game, lichess.org, 2016.

5.e3 Nbd7 6.Nf3 e4 7.Nd4 d5 8.c4 dc4 9.Bc4 Bd6 10.Nc3 0-0 11.0-0 Bh2 12.Kh2 Ne5 13.Be2 Nfg4 14.Bg4 Ng4 15.Kg3 Qd6 (15...Qg5 16.f4 ef3 17.Nf3= (17.Rf3?? Ne3 18.Kf2 Nd1 19.Nd1 Qd2 20.Kg1 Re8–+; 17.gf3?? Ne3 18.Kf2 Nd1 19.Rad1 Qh4 20.Ke3 Re8 21.Kd3 c5 22.bc6 bc6–+; 17.Kf3? Ne3 18.de3 Bg4 19.Kf2 Bd1 20.Rad1 Rfe8–+)) 16.f4+= ef3 17.Kf3 c5 18.bc6 bc6 19.Qc2 (19.g3 Rb8 20.Qc2 c5=) 19...Re8= 20.g3 (20.Nf5 Qg6 21.e4 Nh2 22.Kf2 Ng4 23.Kf3 Ba6=) 20...Qh6=+ 21.Nce2 Exerts pressure on the isolated pawn (21.Nde2 Ne5 22.Kf2 Qh2 23.Ke1–+) 21...c5–+ 22.Nf5 Qh5 23.Nf4 (23.Ng7 Ne5 24.Kf2 Qh2 25.Ke1–+) 23...Qf5–/+ 24.Qf5 Bf5 25.Rfc1 Rad8 26.Ke2 (26.Rc5?? Rd2 27.Nh3 Nh2 28.Kf4 Bh3–+) 26...Nh2 27.Bc3 g5 28.Ng2 Rd5 (28...Rd5 29.Ne1 c4–+) 0–1. marekt (2095) – elgin43 (2040), gameknot.com, 2014.

5.Nf3 Be7 6.e3 0-0 7.Be2 c6 8.d4 e4 9.Nfd2 d5 10.a4 cb5 11.ab5 Be6 12.0-0 Nbd7 13.c4 dc4 14.Bc4 Bg4 15.Qb3 (15.Qc2 Nb6 16.Nc3 Nc4 17.Nc4 Qc7=) 15...Nb6 16.Ba3 Ba3 17.Qa3 Qc7 18.Rc1 Rfc8 19.Rc3 Qd8 (19...Qd7 20.Bf1=) 20.h3 Bd7 21.Qd6 a4 22.Bf1 Ne8 23.Rc8 Nd6 24.Rd8 Rd8 25.Nc3 f5 26.Na4 Na4 27.Ra4 Bb5 28.Bb5 Nb5 29.Rb4 Nd6 30.Rb6 Rd7 31.g4 fg4 32.hg4+= Kf7 33.Nb3 Nc4 34.Rb4 Nd6 35.Nc5 Rc7 36.f3 ef3 The passed pawn on e3 will quickly become a dangerous weapon 37.Kf2 Re7 38.Kf3 b6 39.Na4 b5 40.Nc5 Ra7 41.e4 Ra3 42.Kf4 h6 43.Ke5 Nc4 44.Kd5 Ne3 45.Kd6 Ra8 46.Rb5 Rd8 47.Nd7 Ng4 48.e5 Ke8 49.e6 Nf6 50.Re5 Ra8 51.Nf6 gf6 52.Rb5 Rd8 53.Kc5 Rc8 54.Kd5 Rd8 55.Ke4+- Rd6 56.d5 With the idea Kf5 56...h5 57.Kf5 h4 58.Kf6 (58.Kf6 Rd8 59.d6 Rd6 60.Rb8 Rd8 61.Rd8 Kd8 62.Kf7+-) 1–0. Woelfelschneider,Peter – Joachimsthaler, 2010.

5.Nf3 Be7 6.e3 0-0 7.Rg1 e4 8.Nd4 c5 9.bc6 bc6 10.g4 c5 11.Nf5 Bf5 12.gf5 Qd7 (12...d5 13.f3=+) 13.Bh3 (13.d3 d5 14.de4 Qb7=) 13...d5 14.Nc3 d4 15.Ne2 (better 15.Ne4!? Ne4 16.Rg7 Kg7 17.f6 Nf6 18.Bd7 Nbd7 19.ed4=+) 15...Nc6-/+ 16.Nf4 (16.Rb1 Rab8 17.Bg2 Qf5 18.ed4 cd4 19.Nd4 Nd4 20.Bd4 Ba3 21.Rb8 Rb8-+) 16...Rfb8 17.Rb1 (17.Ra2 Rb7-+) 17...Rb7 18.Ba1 Rab8 (18...Rb1!? 19.Qb1 Bd6 20.Ne2-+) 19.Rb7-/+ Rb7 20.Nh5?? (20.d3 Qe8 21.de4=+) 20...Nh5-+ 21.Qh5 (21.d3-+) 21...Bf6 (better 21...Rb1 22.Qd1 Rd1 23.Kd1 Bf6-+) 22.Qd1 Ne5 Black intends d3 23.Bg4 d3 (better 23...Nc4 24.Qc1 de3 25.de3 Na3 26.Bf6 Rb1 27.Qb1 Nb1-+) 24.Be5-/+ Be5 25.cd3 (25.f6 dc2 26.Qc2 Qd3=+) 25...Qd3-/+ 26.Be2 (better 26.Qa4!? Rb8 27.Be2=+) 26...Qa3-+ 27.f4 (27.Qc2 Qb4 28.Rg4 Qb1 (28...Bh2?! 29.Re4 Qb1 30.Bd1+=) 29.Bd1 Qc2 (29...Bh2 30.Qc5 Bc7 31.Qd4+-) 30.Bc2 Bh2 31.Re4 g6-/+) 27...Bf6 (27...Qa2 28.Kf2 Bf6 29.Qc1-+) 28.Kf2 (28.Qc2 Qb4 29.Kf2 a4-+) 28...a4 (28...Qa2!? 29.Qc1 Qd5 30.Qc2-+) 29.Qc2 Qb3 (better 29...Qb4!?-+) 30.Qc5 Rb8 31.Rc1 a3 32.Qc8 Bd8 33.Qd7 Qb5?? (better 33...Kf8=+) 34.Bb5+- Bh4 35.Kg2 (better 35.Ke2 g6 36.fg6 hg6 37.Rc7+-) 35...a2 36.Rc8 Bd8 (36...Rc8 37.Qc8 Bd8 38.Qd8) 37.Rd8 (37.Rd8 Rd8 38.Qd8; 37.Qd8) 1-0. black_bishop_88 (2455) - Gahan_MG (2645), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 a5)

6.c4 0-0 7.Nc3 Nbd7 8.Be2 Nc5 (8...Nb6 9.d3=) 9.d4= ed4 10.ed4 (10.Qd4? Nb3 11.Qd3 Na1 12.Ba1 Be6–+) 10...d5?? (better is 10...Ne6=) 11.dc5+- (11…dc4 12.Qd8 Rd8 13.Na4+-) 1–0. Schirmer,Michael – Rosner,Dirk, corr 3GMM½–05, 1997.

6.c4 0-0 7.Nc3 Nbd7 8.Nf3 Nb6 (8...c5 9.Be2=) 9.Be2 (9.d4 ed4 10.Qd4 Nbd7=) 9...Be6 10.d3 Nfd7 11.0-0 f5 (11...Re8 12.Qc2=) 12.Nd2 Bf6 13.Qc2 Qe7 14.Rab1 Nc5 15.f4 Rad8 16.fe5 de5 17.e4 Bg5 18.Nd5 Bd5 19.ed5 Bf4 20.g3 Be3 21.Kg2 Nbd7 22.Rbe1 Na4 ½–½. pereira (1950) – pensalo (1930), internet, 2007.

6.c4 0-0 7.d4 ed4 8.Bd4 c5 =+.

6.c4 0-0 7.Nf3 Nbd7 8.d3 e4 9.de4 Ne4 10.Nbd2 Nec5 11.Be2 Bf6 12.Qc2 Bb2 13.Qb2 Qf6 14.Qf6 Nf6 (worse is 14...gf6 15.Rd1+/-) 15.0-0 Re8 16.Rfe1 g6 17.Rac1 Kg7 18.Nd4 Bg4 19.Bg4 Ng4 20.Red1 (better is 20.h3 Ne5 21.Rb1=) 20...Nd3–/+ 21.Rc2 Ngf2 22.N2f3?? (better is 22.Rf1 Re3 23.b6 cb6 24.Rf2 Nf2 25.Kf2 Ra3 26.Nb5–+) 22…Nd1 0–1. Fournier,Frederic – Seppi (2655), Partie evaluee, 3m + 0s, 2008.

6.c4 0-0 7.Nf3 Bg4 8.Be2 Re8 (8...Nbd7 9.0-0=) 9.Nc3 Bf8 (9...Nbd7 10.0-0=) 10.h3 Bf3 11.Bf3 e4 12.Be2 Nbd7 13.Qc2 Nc5 14.a4 Qd7 15.0-0 b6 (15...g6 16.f3 Bg7 17.Rf2=) 16.d4 (16.f3!? Qe6 17.fe4 Nfe4 18.Rf4+-) 16...ed3+= 17.Bd3 Nd3 (17...g6 18.Be2+=) 18.Qd3 Rac8 19.Nd5 Ne4 (19...Nd5 20.cd5 f5 21.Rac1+=) 20.Qd4 (20.Bd4 Qe6+-) 20...Re6 21.Nf4 Re5 22.f3 Nc5 23.e4 f5 24.Nd3 Nd3 25.Qd3 fe4 26.fe4 Rg5 27.Rf4 (27.Rf5 Rf5 28.ef5 Re8+=) 27...Qe6+= 28.Raf1 Be7 29.Qf3 Qc4 (29...Rg6 30.h4+=) 30.Rf7 (better 30.h4 Rg6 31.h5+-) 30...Qe6= 31.h4 Rg4?? Exerts pressure on the isolated pawn (31...Rg6 32.h5 Rf6 33.Re7 Rf3 (33...Qe7 34.Bf6 Qe6 35.Qg3+-) 34.Rg7 Kf8 35.Rf3 Ke8=) 32.Re7!+- Rg2 (32...Qe7 33.Qg4 Deflection (33.Qg4 Overloading)) 33.Qg2 Qe7 34.e5! Rf8 (34...de5 35.Qd5 Double attack (35.Qd5 Decoy)) 35.Qd5 Kh8 36.Rf8 Qf8 37.ed6 cd6 38.Bd4 h6 (38...Qc8 39.Bb6 Qg4 40.Kf1+-) 39.Bb6 Qf4 40.Ba5 Qg4 (40...Qa4 41.b6 Qa1 42.Kg2 Qb2 43.Kf3 Qa3 44.Ke2 Qb2 45.Kd3 Qb1 46.Kc3 Qc1 47.Kb4 Qe1 48.Kb5 Qe2 49.Kc6 Qe8 50.Kb7+-) 41.Qg2 Qd4 (41...Qd1 42.Kh2 Qd4 43.Be1+-) 42.Qf2 Qg4 (42...Qd1 43.Kh2 Qb3 44.b6+-) 43.Kh2 Qa4 (43...Kg8 44.b6 Qc8+-) 44.Bc3 Kg8 45.b6 Qd7 46.Qg2 (46.Qg2 d5 47.Qg7 Qg7 48.Bg7 Kg7 49.b7+-) 1–0. UncleBulgaria (2425) – Storminpawnin (2300), ChessWorld.net, 2017.

6.d4 0-0 7.de5+= de5 8.Qd8 Rd8 9.Be5 Bf5 10.Nd2 Nbd7 11.Bc7 Rdc8 12.Bg3 Rc2 13.Ne2 Rac8 (13...Bg4!?+=) 14.Nd4+/- Rc1 15.Rc1 Rc1 16.Ke2 Bg6 17.N2b3 Rc3 18.a4 Nc5 19.Nc5 (19.Na5 Bd8 20.Nb7 Nb7 21.Be5+=) 19...Bc5= 20.Be5 Nd7 21.Bg3 Nb6 22.Bf4 (better is 22.Be5!?+=) 22...Ra3–/+ 23.g4 h5 (23...Bd3 24.Kf3 Bf1 25.Rf1 Bd4 26.Rd1+=) 24.Bg2 hg4 25.Rc1 Bd3 26.Ke1 Bb4 27.Kd1 Ra2 28.Rc2 Bc2 29.Nc2 Na4 30.Bb7 Rb2 31.Be5 Bc3 32.Bd4 Bd4 33.ed4 Rb5 34.Bc6 Nc3 35.Kd2 Rb3 36.d5 Ne4 37.Ke2 Kf8 38.Nd4 Rh3 39.Nf5 g6 40.Ne3 f5 41.d6 Nd6 42.Kf1 Rh2 0–1. Wantoch_Rekowski,Jacek (2305) – Kolanek,Roman (2505), 3. Email Team Championship Poland, 2006.

6.d4 ed4 7.ed4 0-0 8.Nf3 Re8 9.Be2 Nd5 10.0-0 Nf4 11.Re1 Ne2 12.Qe2 Bf5 13.Nc3 Nd7 14.Nd5 Bf8 15.Qe8 Qe8 16.Re8 Re8 17.Ne3 Bg6 18.Re1 h6 19.d5 Nc5 20.Bc3 b6 21.Nd4 Bh7 22.f3 h5 23.Kf2 f6 24.g3 Kf7 25.Nef5 Re5 26.Ne3 Re7 (26...Re8 27.h3=) 27.Nc6+= Re8 28.Nd4 g6 29.Ne6 (29.Nc6 g5=) 29...Ne6 30.de6 Re6 31.Nd5 Re5 32.Be5 de5 33.a4 g5 34.Re2 Bd6 35.Ke3 g4 36.f4 Ke6 37.c4 e4 38.Rd2 f5 39.Ke2 Bg8 40.Rd1 Bf7 41.Rc1 ½–½. Fournier,Frederic (1700) – Rodrigues,Luis Nuno (1690), Redhotpawn.com, 2012.

6.d4 Nbd7 7.Nf3 e4 8.Nfd2 d5 9.c4 dc4 10.Bc4 0-0 (10...Nb6!?+=) 11.Nc3+/- Nb6 12.Be2 Re8 13.Nde4 Ne4 14.Ne4 Qd5 15.f3 f5 16.Nc3 Qd6 17.0-0 (17.e4!?+/-) 17...Bf6 18.Bc1 a4 19.Rb1 Be6 20.f4 Qd7 21.Bf3 Ra7 22.g3 g6 23.Qc2 Bc4 24.Re1 Bb3 25.Qd2 Kg7 26.Bd1 Bc4 27.Qf2 Bd3 28.Rb2 Bc4 29.Bf3 Bf7 ½–½. Fournier,Frederic (1605) – Huutoshakki, Redhotpawn.com, 2012.

6.d4 e4!? +=.

6.Be2 0-0 =.

6.Nf3 0-0 7.Be2 Nbd7 8.0-0 c6 9.c4 cb5 10.cb5 Nb6 11.Nc3 Be6 12.e4 a4 (12...Rc8 13.Rc1=) 13.d4+= Nc4 14.Qc2 Nb2 15.Qb2 Qb6 16.de5 de5 17.Ne5 Rfd8 18.Nf3 Rac8 19.e5 (worse is 19.Na4 Qa5 20.Bd1 Ne4–/+) 19...Nd5 20.Nd5 Bd5 21.Rad1 Bb3 22.Rd8 Rd8 23.Rc1 Bc5 24.Bf1 h6 25.g3 Qc7 (25...Bd5 26.Qe2=) 26.Nd2+= Qe7 27.Nc4 Qg5 28.Qc3 b6 29.Qe1 Qe7 30.h4 Rd4 31.Qc3 Qe6 32.Kg2 Qg4 33.f3 Qf5 34.Be2 h5 35.Rh1 g6 36.Rc1 g5 37.hg5 Qg5 38.Qe1 Kf8 39.Kh3 Qh6 40.Kg2 h4 41.gh4? Ba2 42.Nd6 Rh4 43.Nf5 Rh2 44.Kg3 Rh3 45.Kg2 Qh5 46.Rc5 Rh2 47.Kg3 Be6 48.Rc8 Bc8 49.Qb4 Kg8 50.Qg4 Qg4 (50...Qg4 51.fg4 Re2 52.Ne7 Kg7 53.Nc8 Re3 54.Kf2 Ra3 55.Nb6 Ra2 56.Ke3 a3–+) 0–1. Trokenheim,Marek (1770) – Pozuelo,Miguel, OP–2012–0-02173, 2012.

6.ab4 Ra1=+ 7.Ba1 Bb4 8.e3 d5 9.Bb5 Bd7 10.Nf3 0-0=+ 11.0-0 Nb8 12.Qe2 c6 13.Bd3 Bg4 14.h3 Bh5 15.c3 Be7 16.g4 Bg6 17.Bg6 fg6 18.Nd4 Qd6 19.f4 Ne4 20.Kg2 Nd7 21.d3 Nef6 22.e4= Ne5?? 23.fe5+- Qe5 24.Nf3 Qc7 25.e5 Nd7 26.d4 Qa5 27.Nbd2 h5 28.Qd3 hg4 29.hg4 g5 30.Qg6 Qa2 31.Qe6 (31…Rf7 32.Qd7+-) 1–0. Fischer,Detlev – Ehlting,W, BdF, 1981.

6.c3 bc3 7.Nc3 d5 8.d4 Bd6–/+ 9.e3 0-0 10.Bd3 Ne7 11.Nb5 c6 12.Nd6= Qd6 13.Nf3 b6 14.0-0 Ba6=+ 15.Ba6 Ra6 16.Qc2 Nd7 17.Rfc1 Rfa8 18.Ng5 Qh6 19.Nf3 Qd6 20.Ne1 Ra4=+ 21.Nd3 h6 22.Qc3 Qe6 23.Nb4 Kh8 24.Nc6? Rc4–+ 25.Qd3 Nc6 (26.Rc4 dc4–+) 0–1. Stanitz,Antal – Zbroja,Tadeusz, corr 3GMM–43, 1997.

6.e3 Be7 =+.

6.Nf3 d5 7.e3 Bd6 8.ab4 Ra1 9.Ba1 Bb4 10.c4 0-0 11.Bf6= Qf6 12.cd5 Ne7 13.Qb3 Ba5 14.Qb5 Qf5 15.Bc4 Bd7 16.Qb3 b5= 17.Bb5 Rb8 18.Nd4 Qg5 19.g3 c5 20.Qa2 Qd5 21.Qd5 Nd5 22.Na3 cd4 23.Bd7 de3 24.Ke2 ed2 25.Nb5 Rd8 26.Bc6 Nb6 27.Ra1 Nc4 28.Rd1 Nb2 29.f3 f5 30.h3 Nd1 31.Kd1 Rd3 32.f4 Rg3 (33.Kc2 g6–+) 0–1. Pierred (2185) – Beyonder (2565), Rated game, 5m + 0s, 2005.

6.Nf3 Be7 =.

7.Bb5 Ra5 8.Bc6=+ bc6 9.ab4 Ra1–/+ 10.Ba1 Bb4 11.Qf3 Be7 12.Ne2=+ Bg4 13.Qf4 Qb8–/+ 14.Nbc3 Bd6 15.Qa4=+ Bd7 16.Nd1 Be7 17.Nf4= Qd8 18.Bf6 Bf6 19.Nh5 0-0 20.Nf6 Qf6 21.0-0 Qg6 22.f3 Re8 23.c4 Bh3 24.Rf2 d4 25.c5 de3 26.de3 h6 27.Kh1 Bc8 28.Rd2 Qb1 29.e4 Qb5 30.Qd4 f5 31.Ne3 fe4=+ 32.fe4 Qb1 33.Rd1 Qe4 34.Qe4 Re4 35.Rd8 Kh7 36.Rc8 Re3 37.g3 Re5 38.Kg2 Rc5 39.Kf3 Rf5 40.Ke4 Rf7 41.Kd4 Rd7 42.Kc3 c5 43.Kc4?? Rd2–+ 44.h4?? Rg2 45.Rc7 Rg3 46.h5 Rg4 47.Kc5 Rg5 48.Kd4 Rh5 49.Ke4 Ra5 50.Kf4 h5 51.Re7 Kh6 52.Re6 g6 53.Kg3 Kg5 54.Kh3 Ra3 55.Kg2 h4 56.Kh2 Kh5 57.Re8 g5 58.Rh8 Kg4 59.Rd8 Ra2 60.Kg1 h3 61.Rd3 Kh4 62.Rd4 g4 63.Kh1 0–1. COMP – COMP, 2001.

7.Bb5 Bg4 8.Nf3 Bd6 9.ab4 Ra1 10.Ba1 Bb4 11.c4 0-0 12.Qa4 Bf3 13.gf3 Qd6 14.Bf6 Qf6 15.Bc6 Qb2 16.0-0 bc6 17.Qc6 dc4 18.Qc4 ½–½. aspasio – Saltis, ICC, 1999.

7.Nf3 Bd6 8.ab4 Ra1 9.Ba1 Nb4 10.Be2 0-0 11.0-0 Qe7 12.Bb2 Bf5 13.Nd4= Bd7 14.f4 c6 15.Rf3 Na6 16.Nc3 Ra8 17.Rg3 Nc5 18.Bf3 g6 19.h3 h5 20.Be2=+ Nfe4 21.Rf3 Nc3 22.Bc3 Ne4 23.Bd3 Nc3–/+ 24.dc3 Ra4 25.Be2 b5 26.Bd3 Qe8 27.Qe2 c5 28.Nb5 Bb8 29.c4 Bb5 30.cb5 c4 31.Bf5 Ba7 32.Kh2 Ra3 33.e4–/+ Ra1 34.h4 Qe7 35.Bh3–/+ Qe4 36.Rf2? Bf2 (37.Qf2 d4–+) 0–1. Ahrens,Gerhard (1965) – Foerster,Hans_Juergen (2010), CiF, 2006.

7.Nf3 Bd6 8.ab4 Ra1 9.Ba1 Nb4 10.Be2 0-0 11.0-0 Bf5 12.d3= Re8 13.Qd2 Qe7 14.Na3 c6 15.Bb2 Na6 16.Ra1 Nc5 17.Nd4 Bd7 18.c4 Na4 19.Nf3 Ng4 20.cd5 cd5=+ 21.Ra2 d4 22.e4 Bb4 23.Qc2 Nb2 24.Qb2–/+ Be6 25.Nd4 Ba2 26.Nac2 Qe5 27.Bg4 Bc5 28.Qa2 Bd4 29.g3 Bc5 30.Bf3 Qc3 31.Qc4 Qc4 32.dc4 Rd8 33.e5 Rd2 34.Ne3 b6 35.h4 Rd3 36.Be2 Ra3 37.Nf5 g6 38.Nh6 Kg7 39.Ng4 Rg3 40.Kh2 Rb3 41.Kg2 Rb2 42.Kf1 Be7 (43.h5 gh5–+) 0–1. Mosley,G – Rohde,Friedhelm, (year?).

7.Nf3 Bd6=+ 8.Bb5 0-0 9.0-0 Bg4 10.ab4 Ra1 11.Ba1 Nb4 12.Be2 Qe7 13.h3 Bh5 14.d3 Ra8 15.Nbd2 Ra2 16.c3 Nc2 17.Qb1 Ra1 18.Qc2 Ra3 19.Rb1 c6 20.Qb2 b5=+ 21.Nd4 Be2 22.Ne2 Qa7 23.Nd4 Ra2 24.Qc1= Qa6 25.g3 Nd7 26.N2b3 Ne5 27.Qd1 c5 28.Nf5 Bf8=+ 29.d4 Qf6 30.de5?? Qf5–+ 31.Qf1 Qc2 32.Qe1–/+ Ra3 33.Nd2? Qc3–+ 34.Rb5? Ra1 35.Rb1 Rb1 36.Qb1 Qd2 37.Qb3 c4 38.Qb6 Qb4 39.Qc6 Qc5 40.Qa4 c3 41.Qc2 d4 42.ed4 Qd4 43.Qf5 g6 44.Qc2 Bc5 (45.Kf1 Qf2 46.Qf2 Bf2–+; better is 44...Qd2 45.Qe4 c2–+) 0–1. Frank,D – Pehlgrim,A, Pinneberg, 1999.

4.Be5+= a5 5.b5 Bc5 6.d4+/- Be7 7.e3 d6 (7...0-0 8.Bd3+/-) 8.Qf3 Bg4 (Better is 8...Ra7!? 9.Bf6 Bf6+/-) 9.Qa8+- de5 10.Be2 (10.c3 Be6+-) 10...ed4 (10...Bf5 11.Nf3 ed4 12.Nd4+-) 11.Bg4 Ng4 12.Qe4 Nf6 13.Qd4 Qc8 14.Nf3 0-0 15.0-0 Bc5 16.Qb2 Qf5 17.Rd1 Bd6 18.Nbd2 Nbd7 19.Nd4 Qh5 20.N2f3 Ng4 21.h3 Nge5 22.Ne5 Ne5 23.Qc3 f5 24.Ne6 Rf6 25.Nc7 Qg5 26.f4 Nf3 27.Kf2 Bf4 28.Qc4 Rf7 29.ef4 1–0. kamret (2130) – KAK (1680), GameColony.com, 2003.

4.Be5 d6 5.Bb2 Nbd7 6.Nf3 Ne4 7.e3 Bb7 8.c4 d5 9.cd5 Bd5 10.Nc3 Nc3 11.Bc3 Be7 12.Be2 c5 13.0-0 0-0 14.Qc2 cb4 15.ab4 Rc8 16.Qb2+- Bf6 17.Ra7 Rc7 18.Rc7 Qc7 19.Rc1 Rc8 20.Ba6 Ra8?? 21.Bf6 Qa7 22.Bg7 b5 23.Bh6 Qa6 24.Qg7# 1–0. MarcosRamos – one_none_blonde, internet, 2007.

4.Be5+= d6 5.Bc3 +=.

4.b5 d6=+ 5.c4 a6 6.a4 (6.Qa4=+) 6...g6 (6...Be7 7.Nc3=+) 7.g3 (7.Nc3 Bf5=+) 7...Bh6 (7...Bg7 8.Bg2=+) 8.Bg2= 0-0 (8...Nbd7 9.d3=) 9.d3 d5 (9...Qa5 10.Bc3 Qc7 11.Nf3=) 10.cd5+= Nd5 11.ba6 Ra6 12.Be5 Nc6 13.Bb2 Rb6 14.Bd5 Qd5 15.e4 Qb3 16.Bf6= Re8 17.f3 Qd1–/+ 18.Kd1 Nb4 19.Bc3 Nd3 20.Ke2 c4 21.Kf1 Be3 22.h4 f5–+ (23.a5 Rb3–+) 0–1. Torre,Isidro – Jensen,Tommy, IECC, 1999.

4.b5 d6=+ 5.c4 Be6 6.e3 Nbd7 7.Qc2 g6 (7...Be7 8.d4=+) 8.Nf3 Nh5 (8...e4 9.Ng5 Bf5+=) 9.Be2+= f5 (9...a6 10.ba6 Ra6 11.0-0=) 10.g3 (10.0-0!?+=) 10...Bg7= 11.Nc3 (11.0-0 0-0=) 11...0-0 (11...e4 12.Nh4 Nhf6 13.d3 ed3 14.Qd3–/+) 12.d3= Qe7 13.Nd5 Bd5 14.cd5 e4 15.Nd2 Bb2 16.Qb2 Nhf6 17.Rd1 (17.Qc2 Qe5 18.Rd1 Qd5 19.de4 Qe5 (19...fe4?? 20.Bc4+-) 20.ef5 Qf5 21.Qf5 gf5+/-) 17...ed3 18.Bd3=+ Nb6 19.Qb3 Qf7 20.Nc4= Qd5 21.0-0 Qe6 22.Be2 Rfd8 23.Rfe1 Nc4 24.Bc4 d5 25.Bf1 b6 26.f3 Kg7 27.Bh3 Re8 28.Bf1 Re7 29.Re2 Rae8 30.Kf2 Qe5 31.Qc2 Re6 32.Rdd2 R8e7 33.Rd3 Qb8 34.Qb2 Kf7 35.a4 Qe8 36.Qa2 Kg7 37.Qb2 Kf7 38.h3 Qf8 39.Qc3 Qh6 40.Qc1 Qg5 41.h4 Qh6 42.Bh3 d4 43.Qc4 Ke8 44.Qb3 Nd7 45.Bf1 Ne5–+ 46.Rd4?? cd4 47.ed4 Qg7 48.de5 Re5 49.Rd2 Rc5 50.f4 Kf8 51.Rd8 Re8 52.Re8 Ke8 53.Be2 Qd4 54.Qe3 Qe3 55.Ke3 Rc3 56.Bd3 h5 (57.Kd4 Ra3–+) 0–1. Dissels – de Vries, corr Netherlands, 1990.

4.b5 d6=+ 5.e3 Be7 =+.

4.b5 e4 5.e3 d5 6.d4 (6.d3!?=) 6...c4–/+ 7.c3 (7.Ne2 a6–/+) 7...Bd7 8.a4 Bd6 (8...a6 9.Na3–/+) 9.g3 (9.Ba3!? Bc7 10.Nd2–/+) 9...a6–+ 10.Bh3 (10.Ba3 ab5 11.Bd6 Bg4–+) 10...Bh3 11.Nh3 Qd7 (11...ab5 12.ab5 Ra1 13.Ba1–+) 12.Ng1 (12.Nf4 ab5 13.Nh5 ba4 14.Nf6 gf6–+) 12...0-0 13.f4 ab5 14.ab5 Qb5?? 15.Ra8=+ Qb2 16.Ne2 Nbd7 17.Rf8 Bf8 18.Qc1 Qb6 19.0-0= Qe6 20.Qb2 Qh3 21.Nc1 Ng4 22.Re1 Ndf6 23.Qg2 Qg2 24.Kg2 b5 25.h3 Nh6 26.Ne2 Nf5= 27.Kf2 b4 28.cb4+= Bb4 29.Nbc3 Nd6 30.Rb1+- Ba5? 31.Rb8 (31…Nde8 32.Nd5+-) 1–0. Herzog,W – Wartig,Wolfgang, corr DDR, 1985.

4.c3 d5 5.g3 Nc6 6.e3 d4 (6...Bd6 7.bc5 Bc5 8.d4–/+) 7.Bb5 (7.b5 Na5 8.cd4 ed4+=) 7...de3–/+ 8.Bc6 bc6 9.Qa4? (9.de3 Qd5 10.f3 Qd1 11.Kd1 Be6–/+) 9...ed2?? (better is 9...ef2 10.Kf2 Qd5–+) 10.Nd2–/+ Bd7 11.Ngf3 e4 12.Ne5 Attacking the isolated pawn on c6 12...Bd6 (12...Qc7 13.Nd7 Qd7 14.0-0=) 13.Nd7= Qd7 (worse is 13...Nd7 14.Qc6 e3 15.Nc4+/-) 14.bc5 (14.0-0-0 Qc7 15.c4 e3 16.fe3 Be7=) 14...Be5 (better is 14...Bc5!? 15.Ne4 Qe6–/+) 15.Ne4 Ne4 16.Qe4 f6?? (better is 16...0-0!?=) 17.Rd1 Qb7 18.0-0 Qb2?? 19.Qc6+- Ke7 20.Rd7 Ke8 21.Qc8 Rc8–+ 22.Ra7 Qc3 23.Rd1 Qc5 24.Rdd7 Qc1 25.Kg2 Qc6 26.Kf1 Qd7 (26...Qd7 27.Rd7 Kd7–+) 0–1. nordlicht (2135) – harzer, gameknot.com, 2006.

4.c3 Be7 5.e3 0-0 6.c4 cb4 7.ab4 Bb4 8.Nf3 e4 9.Ng5 d5 10.cd5 Qd5 11.Nh3 Rd8 12.Bf6 gf6 13.Nc3 Qc5 (13...Qe5 14.Rc1–/+) 14.Rc1 (14.Ne4? Qe5 15.Rc1 Bh3–+) 14...Qe5 (14...Nc6 15.Ne4 Qe5 16.Nc3–/+) 15.Nf4 Bf5 16.Bc4 Bc3 17.Rc3 b5 18.Be2 b4 19.Rc4 a5 20.0-0 Nd7 21.Qc2 Kh8 22.h3 Rg8 23.Rc1 Nb6 24.Rc6 Rac8 (24...Rgc8!? 25.Qa2 Kg7+=) 25.Qa2= Kg7 26.Nh5 Kf8 27.Nf4 Bd7 (27...Kg7 28.Nh5 Kf8 29.Nf4 Kg7=) 28.Rc8+= Nc8 (28...Bc8? 29.Rc6 Rg5 30.Rb6+-) 29.d4 ed3 30.Nd3 (worse is 30.Bd3 Kg7+=) 30...Qf5 (30...Qe4 31.Bf1 Rg5 32.Nc5+=) 31.Nc5+= Bc6 32.Bg4 Rg4 33.hg4 Qg4 34.e4 Ne7 (34...Qg5 35.Nb3 Be4 36.Rc8 Kg7 37.f3+=) 35.Qa5+/- Be4 36.Ne4 Qe4 37.Qc5 Kg7 38.Rc4 Qe1 39.Kh2 b3 40.Rb4 Qe5 ½–½. marekt (2055) – guides (1835), gameknot.com, 2014.

4.bc5 Bc5 5.e3 Nc6 6.Nf3 =+.

4.bc5 Bc5 5.Be5 Qb6 (better is 5...Bf2 6.Kf2 Ng4 7.Ke1 Ne5+=) 6.e3+/- Ne4 (6...0-0 7.d4 Be7 8.Bd3+/-) 7.d4 Qa5 8.Nd2 Nd2 (8...Bf8!? 9.Bd3 d5+/-) 9.Qd2+- (9.dc5? Nf3 10.Ke2 Ne5–+) 9...Qd2 10.Kd2 Bb6 (10...Bf8 11.Nf3+-) 11.c4 0-0 12.c5 Ba5 13.Kc2 Nc6 14.Bg3 Ne7 15.Bc4 d5 16.Bd3 b6 (16...Nf5 17.Nf3+-) 17.cb6 (better is 17.Bd6!? bc5 18.dc5+-) 17...ab6 18.Bb5 (18.Bd6!? Ra7+-) 18...Bf5+/- 19.Bd3?? (better is 19.Kb3+/-) 19...Rac8 20.Kb3 Bd3 21.Nf3 Bc4 (better is 21...Rc3 22.Kb2 Rc2 23.Kb3 Rfc8–+) 22.Kb2 Bd3 23.Kb3 b5 (better is 23...Rc3 24.Ka2 Rc2 25.Kb3 Rfc8–+) 24.Rhc1 Bc4 25.Kb2 Nf5 26.Ne5 f6 27.Nd7 Rfd8 28.Nc5 Bb4?? (better is 28...Bb6 29.Nb3 h5–+ (29...Ng3?! 30.hg3 Kf7 31.Rc2–+)) 29.ab4+- 0–1. Fournier,Frederic (1880) – jllop4 (1875), Active (2/0), 2005.

4.bc5 Bc5 5.Nf3? Ng4?? (better is 5...Qb6 6.Qc1 Bf2 7.Kd1 e4–+) 6.e3+= Nc6 (6...e4 7.Ne5 (< 7.Bg7 Rg8–/+) 7...Ne5 8.Be5+=) 7.h3+/- Nh6 8.Bb5 (8.Ne5 0-0+/-) 8...0-0 9.Ne5 Re8 (9...Ne5 10.Be5 Qg5 11.d4+/-) 10.Nc6 dc6+= 11.Ba4 Qd5 12.0-0 Nf5 13.Re1?? Nh4–+ 14.f3 Bh3 15.Bb3? Qg5 16.g4 Nf3 17.Qf3+= Qg4 18.Qg4+/- Bg4 19.Nc3 Rad8 20.Ne4?? Re4–+ 21.Rf1 Bh3 (22.Rf7 Rd2 23.Rd7 Be6 24.Rd2 Be3 25.Rf2 Bb3 26.cb3 Rf4=; < 21...Rd2 22.Bd4 Red4 23.ed4 Bd4 24.Kh1 Ba1 25.Bf7 Kf8 26.Be6 Bf6 27.Bg4 Rc2 28.Bf5–+) 0–1. thedesertfox (1920) – rkgoss (1735), net–chess.com, 2004.

4.e3 cb4 5.Be5 Nc6 6.Bb2 d5 7.Bb5 (7.ab4 Nb4 8.Bf6 Qf6 9.Bb5 Bd7 10.Bd7 Kd7=) 7...a6 8.ab4 Bb4 9.Ne2 (9.Qf3 Be7=) 9...Bf5 (9...Rb8 10.Bd3=) 10.Nd4 Bd7 (10...ab5? 11.Ra8 (11.Nf5?! Ra1 12.Ba1 0-0+/-) 11...Qa8 12.Nf5+/-) 11.Ba4 (11.Bc6 bc6 12.h3 a5=) 11...0-0 12.0-0 Bc5 13.Bc6 Bc6 14.Nf5 (14.Qf3 Bd7=) 14...Bd7 15.Qf3 Bf5 16.Qf5 Be7 17.f4 (17.Bd4 b5=) 17...Qd7 (17...b5 18.Qd3=) 18.Qg5 (18.Qd7!? Nd7 19.Nc3=) 18...h6 19.Qg3 Qg4 (19...Rfc8 20.Nc3–/+) 20.Qe1 (20.Qg4 Ng4 21.Nc3 Rfd8=) 20...Ne4 (20...Rfc8 21.h3 Qe6 22.Bd4+=) 21.Rf3 (21.d3 Nd6=) 21...Bf6 (21...Rfc8 22.Nc3 Bf6 23.Ra2–/+) 22.c3 (22.Qc1 Rac8=) 22...Nc5 (22...Rfc8 23.Ba3+=) 23.Ba3 Rfc8 24.Rg3 Qf5 25.Qd1 (25.Bc5!? Rc5 26.Rh3+=) 25...Nd3–/+ 26.Rh3 Qd7 27.Qe2 Qb5–/+ 28.Qg4 Kh7 29.Qf5 Kg8 30.g4? Rc6–/+ 31.g5 g6 32.Qg4 h5 33.Qg3?? Bg7 34.f5?? Qa4 35.Qf3 Qg4 36.Kf1? Qf3?? 37.Rf3+= Ne5 38.Rf4 Rc4 39.f6 Bf8 40.d4 Ng4–/+ 41.e4? de4 42.h3? Ne3–+ 43.Ke2 Nc2 44.Ra2 Na3 45.Na3 Ra4 46.Re4 Ra3 47.Rb2 Rc3 48.Rb7 Rh3 49.Rd7 Rb8 50.Ree7 Be7 51.fe7 Re8 52.d5?? Re7 53.Re7 Kf8 54.d6 Rb3 55.Ra7 Rb8 56.Ra6 Ke8–/+ 57.Ra7 Rd8 58.Ra6 Kd7 59.Kf3 Ke6–+ 60.Ke4 Rd6 61.Ra8? Rd7 62.Ra6 Rd6 63.Ra8 Rd5 64.Ra6= Rd6 Draw by threefold repetition 65.Ra8 Rb6 66.Re8 Kd7 67.Rf8?! Ke7 68.Ra8 Re6 69.Kf4 Kd6 70.Ra6 Kd5 71.Ra7 Re4–+ 72.Kf3 h4?? 73.Ra5+- Kd4 74.Ra4 Kd5 75.Re4 h3 76.Re1 h2 77.Kg2 Kd6 78.Kh2 Kd5 79.Re7 (79.Re7 Kd4 80.Rf7 Kc3 81.Rf6 Kd4 82.Rg6 Kd5 83.Kg3 Ke5 84.Ra6 Kd4 85.g6 Kc4 86.Ra8 Kb3 87.Rc8 Ka3 88.Rb8 Ka2 89.Rb7 Ka3 90.g7 Ka2 91.g8Q Ka1 92.Qa8) 1–0. Frank,Detlev – Aleanakian,Gabriel, Pinneberg–ch, 2002. (=1.a3 c5 2.b4 e5 3.Bb2 Nf6)

4.e3 cb4 5.Be5 Nc6 6.Bf6 Qf6 7.c3 ba3 (7...d5!?+=) 8.Na3= Ba3 9.Ra3 0-0 10.Nf3 Qg6 11.h4 a5 (11...d5 12.Qb3=) 12.h5+= Qh6 13.Qa4 Re8 14.Rb3 d5 (14...Rb8 15.Rb5+=) 15.Rb5+/- Rd8 16.Bd3 Ra7 17.Bc2 Be6 18.Rb6 Qf6 19.Qh4 (19.h6 gh6 20.Rh4 Kh8+=) 19...Qh4 (19...a4 20.Ba4 d4 21.Qf6 (21.Bc6?? Ra1 22.Rb1 Rb1 23.Ke2 d3) 21...gf6 22.Bc2 (22.Bc6 Ra1 23.Rb1 Rb1 24.Ke2 d3) 22...dc3 23.dc3=) 20.Rh4+= (worse is 20.Nh4 a4–/+) 20...Bd7 21.Rf4 Be8 22.Ba4 Rc8 23.Ke2 h6 24.g4 Bd7 25.Kd3 (25.Bb3 Ne7+=) 25...Re8 26.Rb1 Kf8 27.Rb6 f6 (27...Kg8 28.Bb3 Re4 29.Bd5 Rf4 30.ef4 Bg4 31.Ne5 Bh5 32.Kc2=) 28.Nh4+= Ne5 (28...Ke7 29.Nf5 Bf5 30.gf5+=) 29.Kc2 Re6 30.Rb1 b6 31.Bb5 Rc7 32.Rd4 Bb5 (32...Bc6 33.f4 Ng4 34.Bc6 Rec6 35.Nf5+= (worse is 35.Rd5 Rc3 36.Kb2 R3c5 37.Rd8 Ke7–/+)) 33.Rb5+/- Nc6 34.Ra4 (worse is 34.Rdd5 Nb4 35.Kb3 Nd5 36.Rd5 Kf7=) 34...Nb4 (34...Kf7 35.Nf5+/- (worse is 35.Rd5 Nb4 36.Rb4 ab4+=)) 35.Kb1 Nd3 36.Ng6 (36.f3 Kf7 37.Rd5 Nc5+/-) 36...Kf7 37.Rd5 Nf2 38.Rf4 Nh1? (38...Nh3 39.Rfd4 Nf2+/-) 39.e4+- Ke8 40.e5 Rd7?? (better is 40...Rc8 41.Rd3 Rd8+-) 41.Rd7 Kd7 42.Nf8 Ke7 43.Ne6 Ke6 44.ef6 gf6 45.d3 Kf7 46.Kc2 Ng3 47.Rf3 Nh1 48.c4 Ke6 49.d4 a4 50.d5 Ke7 51.Kc3 1–0. antinephilehi (1925) – guides (1840), gameknot.com, 2014.

4.e3 Qc7 5.Nf3 d6 6.h3 =.

4.e3 e4 5.Bf6 Qf6 6.Nc3 cb4 7.Ne4 (7.ab4 Bb4 8.Ne4 Qe7=) 7...Qe6 (7...Qg6 8.Ng3=+) 8.Ng5 Qd5 9.N1f3 ba3 10.Rb1 f6 11.Rb5 Qg8 12.Nh3 a6 13.Rb3 Nc6 14.Nd4 Qd5 (14...Nd4 15.ed4 d5 16.Re3 Kd8 17.Be2=+) 15.Nf4=+ Qc5 16.Rc3 Qa5 17.Nb3 Qf5 18.Bc4 Bd6 19.Rd3 (19.g4!? Qg5 20.h4=+) 19...Bf4–/+ 20.ef4 Nb4 21.Re3 Kd8 22.0-0 Nc2 23.Rg3 Nb4 24.Rg7 Qf4 (24...d5 25.Be2 Qf4 26.Qc1–/+) 25.d4 Qh6 26.Rf7 Qf4 27.Qe1 Nc6–/+ 28.Na5 Na5 29.Qa5+= Qc7 30.Qb4 Re8 31.Rf6 d6? 32.Bf7 Ke7+/- 33.Rf4 Rf8 34.Qe1 Kd8 35.Bh5 Rg8 36.Rf7 Bd7 37.Bg4! Bg4 38.Rc7 Kc7 39.Qe7 Kb8 40.Qd6 Ka7 41.Qc5 Kb8 42.Qa3 Ra7 43.Qg3 Ka8 44.Re1 h5 45.h3 b6 46.hg4 hg4 47.Qd3 g3 48.fg3 Rb8 49.d5 Rd8 50.d6 (50...Kb8 51.Qf3+-) 1–0. Over_Rated (2735) – arx (2600), ICC, 2003.

4.e3 Be7 5.Bc3 (5.bc5 Nc6=) 5...Qc7 6.Nf3 e4 7.Ng5 (7.Ne5 d6 8.Nc4 b5=+) 7...d5–/+ 8.d4 (8.bc5!? Bc5 9.Bb2–/+) 8...h6–+ 9.Nh3 Bh3 10.gh3 cb4 11.Bb4 Bb4 12.ab4 0-0 13.Na3 (better is 13.Qd2–+) 13...Qc3 14.Qd2 (14.Ke2–+) 14...Qa1 15.Qd1 Qa3 16.Qd2 Qa1 17.Qd1 Qd1 18.Kd1 Rc8 19.Bg2 Na6 20.b5 Nb4 21.c4 Rc4 22.Kd2 Rc2 23.Kd1 Rac8 24.Ke1 Rc1 25.Ke2 R8c2 0–1. TheMexicanNHHS – pierre_d, chessmaniac.com, 2006.

4.Be5 cb4 5.ab4 Bb4 6.Bb8 Rb8 7.Ra7 0-0 8.e3+= Re8 9.Nf3 d5 10.Be2 Ne4 11.0-0 Bg4 12.Ra4 Bd6 13.d3 Nc5?? (better 13...Nf6+=) 14.Rg4+- Qc7 (14...Qd7 15.Rg5+-) 15.Nbd2 (15.Nc3 f5 16.Nd5 Qd8+-) 15...Re6 (15...b5 16.Qa1 Ne6 17.Qa2+-) 16.Qa1 Rg6 (16...f5 17.Rh4+-) 17.Rg6 hg6 18.Rb1 Kf8 (18...b5 19.h3+-) 19.Rb5 Ke7 (19...Qc6 20.Nd4 Qc7 21.g3+-) 20.Qb1 (20.Qg7 Ra8+-) 20...Rh8 (20...Na4 21.Qe1+-) 21.g3 g5 (21...Rb8 22.Qa2+-) 22.d4 g4 (22...Nd7+-) 23.dc5 gf3 24.cd6 Qd6 25.Nf3 (25.Rb7!? Kf8 26.Nf3 Rh6 27.Rb8 Ke7 28.Qb7 Qd7+-) 25...Rb8 26.Rb7 (26.Rb7 Rb7 27.Qb7 Qd7 28.Qb3+-) 1-0. FeegLood (2605) - TheYellowKing (2365), lichess.org, 2015.

4.Be5 cb4 5.ab4 Bb4 6.Nf3 0-0 7.e3 d5 8.Be2 (8.Bb8 Rb8 9.Ra7 Qb6+=) 8...Nc6= 9.Bb2 d4 (9...Bf5 10.0-0=) 10.0-0 (10.Nd4!? Qd6 11.Nc6 Qc6 12.Bf3+/-) 10...de3 11.fe3 Be6 12.Nd4 Nd4 13.Bd4 (worse 13.ed4 Bd6-/+) 13...Ne4 14.c3 (14.Bf3 Nd6+=) 14...Bc5 (14...Bd6 15.Bf3 (15.Ra7? Ra7 16.Ba7 Qh4-+) 15...Qh4 16.g3 Ng3 17.Qe1= (17.hg3?? Qg3 18.Bg2 Qh2 19.Kf2 Bg3 20.Kf3 f5-+)) 15.Na3 (better 15.Bd3!? Bd4 16.Be4+/- (worse 16.cd4 Nf6=)) 15...Bd4= 16.cd4 Bd5 17.Nc4 (17.Bf3 Qe7=) 17...Re8 (17...Qg5 18.Rf3=+) 18.Ne5= f6 19.Nd3 Qd6 20.Nf4 Kh8 21.Bd3 Rac8? (better 21...Bf7=) 22.Qh5+- Bc4?? (better 22...f5 23.Qf5 Bc6 24.Ra7 Rcd8+-) 23.Bc4 Nd2 (23...g5 24.Nd5 a6 25.d3+-) 24.Bd3 (24.Ng6) 24...Nf1 (24...Ne4 25.Ra7 Ng5 26.Rb7 h6+-) 25.Qh7 (25.Bf1 Re3 26.Nd5 g6=+) 1-0. black_bishop_88 (2540) - pawel94 (2575), lichess.org, 2020.

4.Be5 cb4 5.ab4 Nc6 6.Bc3 Nb4 7.e3 a5 8.Nf3 1–0. Fournier,Frederic (2515) – Lewis,Glenn (2255), chess.com (team), 2010.

5.Bb2 cb4 6.Nf3 d5 7.e3 Bd6 8.ab4 Bb4 9.Be2 0-0 10.0-0 Bd6 11.Na3 Re8 12.Nb5 Bb8 13.d3 a6 14.Nbd4 Qd6 15.Qb1 Bg4 16.g3 Ba7 (16...Nd4 17.Bd4 b5 18.Qb3=) 17.Nc6 Qc6 18.Re1 (18.Bf6!? Qf6 19.Qb7+/-) 18...Nd7 19.Nd4 Bd4 20.Bd4 Be2 21.Re2 Ne5 22.Kg2 Qd7 23.f4 Nc6 24.Qb2 Nd4 25.Qd4 a5 (25...b5 26.c3=) 26.c4= Qg4 27.Kf2 (27.Rb2 dc4 28.dc4= (worse 28.Qc4 Re3 29.Qd5 Re2 30.Re2 Qe2 31.Kg1 Qe3 32.Kg2 Qd2 33.Kh3 Qb4-/+)) 27...dc4=+ 28.Qc4 (28.dc4 Qh5 29.h4 Qf5=+) 28...Qh5-/+ 29.Kf1?? (29.h4 b5 30.Qc6 a4=+) 29...b5 (29...Qf3 30.Ke1 Qh1 31.Kf2 Qa1 32.Re1-+) 30.Qc7?? (better 30.Qc6 Rec8 31.Qe4-/+) 30...Qf3-+ 31.Ke1 Re3 (better 31...Qh1 32.Kd2 Qa1-+) 32.Qc2 (32.Re3 Qe3 33.Kf1 Qd3 34.Kg2 Qd5 35.Kh3-+) 32...Rae8 (better 32...Qh1 33.Kd2 Re2 (33...Qa1?! 34.Re3 Qh1 35.Re2-+) 34.Ke2 Re8 35.Kd2 Qa1-+) 33.Ra2 (33.Re3 Re3 34.Kd2 Re2 35.Kc1 Rc2 36.Kc2 Qe2 37.Kc3 b4 38.Kc4 Qc2 39.Kb5 Qd3 40.Ka5 Qd5 41.Kb4 Qd4 42.Kb3 Qa1 43.Kc2-+) 33...Qh1 34.Kf2 (34.Kd2 Re2 35.Kc3 Rc8 36.Kd4 Qg1 37.Kd5 Rd8 38.Kc6 Re6 39.Kb5 Qb6 40.Ka4 Qb4) 34...Re2 (34...Rf3) 35.Qe2-+ Re2 36.Re2 Qh2 37.Kf3 Qe2! 38.Ke2 f5 39.Kd2 Kf7 40.Kc3 Ke6 41.Kd4 Kd6 42.Kc3 Kd5 43.Kb3 Kd4 44.Kc2 a4 45.Kd2 b4 46.Kc2 b3 47.Kb2 Kd3 48.g4 fg4 49.f5 g3 50.f6 gf6 51.Ka3 g2 (51...Kc4 52.Ka4 b2 53.Ka5 b1Q 54.Ka6 Kc5 55.Ka7 Kc6 56.Ka6 Qb6) 52.Kb4 g1Q (52...g1Q 53.Ka5 Qc5 54.Ka4 b2 55.Kb3 b1Q 56.Ka4 Qbc2) 0-1. TwelveTeen (2635) - IMAndrasToth (2640), lichess.org, 2017. (=1.a3 c5 2.b4 e5 3.Bb2 Nf6 4.Be5 Nc6)

5.Bc3 cb4 6.ab4 Bb4 7.Bb4 Nb4 8.d4 Qc7 9.Na3?? Qc3–+ (10.Qd2 Qa1 11.Qd1 Qa3–+) 0–1. DrSub – slagveld (1670), internet, 2007.

5.Nf3 cb4 6.e3 Ne5 7.Ne5 ba3 8.Bc4 d5 (8...Qc7 9.f4 (9.Bf7? Ke7 10.Na3 Qe5–+; 9.Nf7?! Rg8 10.Nd6 Qd6 11.Bg8 Qe5 12.Na3 Ng8=) 9...d6 10.Bb5 (10.Bf7? Ke7–+; 10.Nf7? Bg4 11.Nh8 Bd1 12.Bb5 Kd8–+) 10...Kd8 11.Nf3=) 9.Bb5 Bd7 (9...Ke7!?=) 10.Nd7+/- (< 10.Na3 a6 11.Nd7 Nd7 12.Bd7 Qd7=) 10...Nd7 11.Qh5 (< 11.Na3 a6 12.Bd7 Qd7=) 11...Be7 12.Qd5 (12.Na3?! a6 13.Bd7 Qd7=) 12...0-0?? (better is 12...a6 13.Bc4 0-0 14.Qb7 Rb8 15.Qa6 Qc7+/-) 13.Qd7+- Qd7 14.Bd7 Rfd8 15.Bf5 g6 (15...Rd5 16.Be4 Rb5 17.c4+- (17.Na3?! Ba3 18.c4 Rb3+-)) 16.Be4 f5 17.Bb7 Rab8 18.Bf3 a2 (18...Rb2 19.Na3 Ba3 20.Ra3 Rc2 21.d4+-) 19.Nc3 Bf6 (19...Bb4 20.Nd5 (20.Ra2?! Bc3 21.0-0 Rd2+/-; < 20.Na2 Bd2 21.Kf1 Rbc8+-) 20...Bf8 21.d4+-) 20.d4 (20.Ra2?! Bc3 21.0-0 Rd2 22.Ra7 Rc2+/-) 20...Rdc8 (20...Rbc8 21.Na2 Rc2 22.Nb4+-) 21.Kd2 Rc7 (21...Rb2 22.Ra2 Ra2 23.Na2+-) 22.Nd5 Rf7 23.Ra2 (better is 23.Nf6 Rf6 24.Ra2+-) 23...Rbb7 (23...Bd8+-) 24.Nf6 Rf6 25.Bb7 (25...a6 26.c4+-) 1–0. b4_player (1935) – IGELNES (1730), GameColony.com, 2002.

5.Bf6 Qf6 6.Nc3 =.

4.b5 Ba3?? 5.Na3 (5.Ba3?! Ne7+-) 5...0-0 (5...Nb8 6.Be5 d6+-) 6.bc6 dc6 (6...d6 7.cb7 Bb7 8.d4+-) 7.Be5 Bg4 (7...Qe7 8.Bb2+-) 8.h3 (better 8.Qb1 Nd7 9.Bg3+-) 8...Be2 (8...Bh5+-) 9.Be2 Nd5 (9...Re8 10.Nf3+-) 10.Nf3 Nf4 (10...Re8 11.0-0+-) 11.Bf4 b5 12.0-0 Qd7 13.Ne5 Qf5 14.Bg3 Rae8 15.Nc6 Qg5 16.Nb5 Re2 17.Qe2 a6 18.Ra6 h5 19.f4 Qc5 20.d4 Qf5 21.Ne7 Kh7 (21...Kh8 22.Nf5 g6 23.Rg6 fg6 24.Qe5 Rf6 25.Qf6 Kh7 26.Qg7) 22.Nf5 g6 (22...Rd8 23.Qh5 Kg8 24.Ne7 Kf8 25.Qh8 Ke7 26.Bh4 g5 27.Bg5 f6 28.Qf6 Ke8 29.Qe7) 23.Qe7 gf5 (23...Rg8 24.Qf7 Kh8 25.Ra8 Ra8 26.Qg7) 24.Qf8 c6 (24...f6 25.Qe7 Kg6 26.Rf6) 25.Qf7 Kh8 (25...Kh6 26.Rc6) 26.Ra8 1–0. michaelbuss (2795) – interloper, ChessWorld.net, 2011.

4.b5 Nb8 5.Be5 d6 6.Bb2 Be7 7.Nf3 0-0 8.e3 c6 9.a4 cb5 10.ab5 a6 11.Be2 Bg4 12.0-0 d5 13.h3 Bf5 14.Nc3 Bb4 15.Ra4 Bc3 16.Bc3 Nbd7 (16...Ne4 17.Bd4+-) 17.ba6 ba6 18.Ra6 (worse 18.Ba6 Qb6 19.Bd4 Qc6+/-) 18...Nc5 (better 18...Ra6 19.Ba6 Qc7+-) 19.Bf6 gf6 20.Ra8 Qa8 21.Nd4 Qa2 (21...Qc8+-) 22.Nf5 Kh8 23.d3 (23.d4 Ne6+-) 23...Rg8 (23...Qa6 24.Bg4+-) 24.Bf3 Rg5 25.Nd4 (25.Nd6 Kg7+-) 25...Ne6 (25...Qa6 26.Qa1+-) 26.Qa1 Qa1 27.Ra1 Kg7 28.Ra7 h5 (28...Nd4 29.ed4 h6+-) 29.Ne6 Kg6 30.Ng5 Kg5 31.Bd5 Kg6 32.Bf7 Kh6 33.Bh5! Kh5 34.Rg7 (better 34.c4 Kg6 35.c5 Kf5+-) 34...Kh6 35.Rg3 f5 36.f4 Kh5 37.Rg5 Kh6 38.c4 Kh7 39.c5 Kh6 40.c6 Kh7 41.c7 Kh6 42.c8Q Kh7 43.Qg8 Kh6 44.Qh8 (44.Qg6) 1-0. black_bishop_88 (2685) - Chess_Ksenia, Pirates Private Cup, lichess.org, 2020. (=1.a3 e5 2.b4 Nc6 3.Bb2 Nf6)

4.b5+= Bc5? 5.bc6+- dc6 6.e3 0-0 (6...Qe7 7.Nf3 e4 8.Nd4+-) 7.Be5 Bg4 8.Nf3 Bf3 (8...Bd6 9.Bd6 cd6 10.Be2+-) 9.Qf3 (9.gf3?! Bd6 10.Bb2 Qe7+-) 9...a5 (9...Nd7 10.Bg3+-) 10.Bf6 Qf6 11.d4 Bd6 12.Nc3 b5 13.Bd3 Qg5 14.Qc6 Rab8 15.Nb5 Rb6 16.Qe4 Re8 17.Qe8 Bf8 18.Bc4 Rf6 19.0-0 h5 20.Rab1 h4 21.Nd6! cd6 22.Rb8 Kh7 23.f4 Qg4 24.Qf8 Kg6 25.f5! Rf5 26.Bd3 h3 27.Bf5 (27.Bf5 Qf5 28.Rf5 Kf5 29.Qf7 Kg5 30.Rb5 d5 31.Rd5 Kg4 32.Qf4#) 1–0. Woelfelschneider,Peter – Kuellmei, 2009.

4.b5+= d5? 5.bc6+- Bd7?? (5...Bd6 6.Nf3 Qe7 7.cb7 Bb7+-) 6.cd7 Ke7 (6...Nd7 7.Nf3 Bd6 8.Nc3+-) 7.Be5 Qd7 8.Bf6 Kf6 9.Nf3 Bd6 10.d4 Rhe8 11.e3 Qe7 12.Bd3 c6 13.Nbd2 Rad8 14.0-0 Qd7 15.c4 dc4 16.Nc4 Bh2 17.Nh2 Qc7 18.Qf3 Ke7 19.Ng4 Kf8 20.Nce5 Qe5 21.Ne5 Re5 22.de5 Rd3 23.Rfd1 Rd1 24.Rd1 Kg8 25.Rd8 1–0. Fournier,Frederic – koko11, Active, 2008.

4.b5+= Bd6? 5.bc6+- bc6 6.e3 Bc5? (6...Rb8 7.Ra2 0-0+-) 7.Be5 d6 8.Bc3 (8.Qf3!? Rb8 9.Bf6 Qf6 10.Qf6 gf6+-) 8...d5 9.d4 Bb6 10.Nf3 Bg4 11.Be2 Bf3 12.Bf3 0-0 13.Nd2 Qe7 14.0-0 Rab8 15.Bb4 c5 16.dc5 Bc5 17.c3 Bb4 18.cb4 c5 19.bc5 Qc5 20.Nb3 Qc4 21.Nd4 Ne4 22.Be4 de4 23.Qc2 Qc8 24.Qe4 Qc4 25.h3 Rbe8 26.Qc2 Qc2 27.Nc2 Rc8 28.Nd4 Rfd8 29.Rfc1 Rc1 30.Rc1 Re8 31.Rc7 Ra8 32.a4 h5 33.a5 g6 34.a6 Kg7 35.Nc6 Re8 36.Ra7 Kh6 37.Rb7 f6 38.a7 g5 39.Rb8 Rb8 40.ab8Q h4 41.Ne7 Kh5 42.Nf5 Kg6 43.e4 Kh5 44.Qh8 Kg6 45.Qg7 Kh5 46.Qh6 (46.Qf7) 1–0. Fournier,Frederic – ruballi, Active, 2008.

4.c3 d5=+ 5.d4 ed4 6.cd4 Ne4 7.e3 Qf6 8.Nf3= g5 9.b5 Na5 10.Nc3+= g4 11.Ne4 de4 12.Ne5 Qg5 13.Qa4 b6 14.Qc2 Bd6 15.Qe4 Nb7? 16.Ng6 (16…Kd8 17.Nh8+-) 1–0. Wall,Bill – Gatti, internet, 2003.

4.c4 a6 5.e3 d5 6.cd5 Nd5 7.Nf3 Bd6 8.d4 ed4 9.Nd4 0-0 10.Bc4 Be6 11.Qe2 b5?? 12.Nc6+- Qe8 13.Bd5 Bd5 14.Na5 Qe4 15.f3 Qh4 16.Qf2 Qh6 17.Nd2 c5 18.bc5?? Bc5+/- 19.Bd4 Bd4=+ 20.ed4 Rfe8 21.Kd1+/- Qb6 22.Nab3+- a5 23.Nc5 Rad8 24.Re1 Re1 25.Qe1 Bc6 26.Qe5 b4? 27.ab4 Qb4 (28.Rb1 Ba4 29.Ke1 Qa3+-). thedesertfox (2100) – tahafathi (2185), net–chess.com, 2004.

4.c4 d5 5.e3 Ne4 6.b5 Na5= 7.Qa4?? b6?? 8.Be5 Bc5? 9.Nf3 0-0 10.Be2 Bf5 11.0-0 Qc8? 12.cd5 f6 13.Bb2 Qd7 14.d4 Bd6 15.Nbd2 Nd2 16.Nd2 Bg4 17.f3 Bh5 18.e4 Rae8 19.Bd3 Bf4 20.Nc4 Bg6 21.Na5 Be3 22.Kh1 f5 23.Nc4 Bf4 24.Ne5 Qd6 25.Qc2 fe4 26.fe4 Qf6 27.Ng4 Qd6 28.e5 Qd5 29.Bg6 hg6 30.Qg6 Qe6 31.Nf6 Rf6 32.ef6 Qf7 33.Qf7 Kf7 34.fg7 Kg7 35.Rf4 Rf8 36.d5 Kg8 37.Rf8 Kf8 38.Rc1 Ke7 39.Rc7 Kd6 40.Ra7 Kd5 41.h4 Kc4 42.h5 Kb5 43.h6 (43...Kc5 44.h7 Kd6 45.h8Q Kd5 46.Qd4 Kc6 47.Qd7 Kc5 48.Rc7#) 1–0. Galicza,Pali – Dotti Contra,Alessandro, FICGS, 2007.

4.c4 d5 5.e3 Be6 6.cd5 Bd5 7.Nf3 Bd6 8.Nc3 Bf3 9.Qf3+= 0-0 10.Bc4 Qe7 11.0-0 Rad8 12.Rfd1 a6 13.Nd5 Nd5 14.Bd5 Qd7 15.Rac1 Ne7 16.Bb7+- Rfe8 17.Ba6 Ng6 18.Qd5 e4 19.Bb5. wlittle (2285) – sgbrito (2350), net–chess.com, 2003.

4.c4 d5 5.e3 Ng4 6.Be2 (better 6.cd5 Qd5 7.Nc3+=) 6...Qg5?? (better 6...h5=) 7.Nf3 (better 7.cd5 Ne7 8.Nf3 Qh6+-) 7...Qf6? (better 7...Qd8 8.cd5 Qd5+-) 8.cd5 Ne7 9.Nc3?? (better 9.Qb3 Qb6 10.Nc3+-) 9...Qf5?? (better 9...e4 10.Ne4 Qb2+-) 10.e4+- Qf4 11.d3 (11.h3 Nf6 12.g3 Qh6+-) 11...Ng6 (11...a5 12.h3 ab4 13.Nb5 (13.hg4?! bc3 14.Bc3 Ng6+-) 13...Nd5 14.ed5 ba3 15.Bc3+- (15.hg4?! Qb4 16.Bc3 Qb5+-)) 12.Bc1 (better 12.Nb5 Kd7 13.Qc2 c5 14.bc5 Nh4+-) 12...Qf6 13.Bg5 (13.h3 Nh6+-) 13...Qb6 (13...Qd6 14.h3 h6 15.Bc1+-) 14.0-0 f6 15.Bd2 c5 (15...Nf4 16.Bf4 ef4 17.Nd2+-) 16.dc6! bc6 (16...Qc6 17.Nd5 Combination; 16...bc6 17.h3 Combination) 17.h3 Nh6 18.Be3 Qb7 19.d4 ed4 (19...Be7 20.Bh6 gh6 21.Bc4+-) 20.Nd4 (worse 20.Bd4 Nf7 21.b5 Nf4+-) 20...c5 (20...a6 21.Na4+-) 21.Nc2 (better 21.bc5!? Bc5 22.Bc4 Rb8+-) 21...cb4 22.ab4 f5 (22...Be7 23.Bc4 Bd7 24.Bh6 gh6+-) 23.ef5 Nf5 (23...Bf5 24.Bf3 Rd8 25.Bb7 Rd1 26.Rfd1 Bc2 27.Bc6 Ke7 28.Ra7 Kf6 29.Nd5 Ke6 30.Nc7 Kf6 31.Ne8 Ke5 32.Ra5 Ke6 33.Bd5 Kf5 34.f3 Ne5 35.g4 Nhg4 36.hg4 Ng4 37.Bf7 Bc5 38.Rc5 Ne5 39.Re5 Ke5 40.Rd5) 24.Bf3 Qe7 (24...Ne3 25.Re1 Be7 26.Re3+- (26.Bb7?! Nd1 27.Bc6 Bd7 28.Bd7 Kd7 29.Red1 Ke8+-)) 25.Ba8 Ne3 26.Ne3 Nf4 27.Ng4 (27.Re1 Kf7 28.Ng4 Qd6 29.Ra7 Kg8 30.Qb3 Ne6 31.Nd5 Qd7 32.Re6 Kf7 33.Nb6 Be7 34.Nd7 Ke8 35.Ndf6 Kf7 36.Ree7 Kg6 37.Qf7 Kg5 38.Qh5 Kf4 39.g3) 27...Bg4 28.Qg4 Qb4 29.Bc6 Kf7 (29...Ke7 30.Rfe1 Kd6 31.Qd7 Kc5 32.Ne4 Qe4 33.Rec1 Qc4 34.Ra5 Kb6 35.Rb5 Qb5 36.Qb7 Ka5 37.Qb5) 30.Qf5 Kg8 (30...Ke7 31.Ra7 Kd6 32.Rd1 Kc6 33.Qc8 Kb6 34.Qc7) 31.Bd5 Nd5 32.Qd5 1–0. Alcocer,Danny – Reveco Toledo,Luciano Agusto, Festival Panamericano da Juven, 2010.

4.c4 d6=+ 5.b5 Na5 6.e3 (6.Qa4 b6=+) 6...c6 (6...a6 7.d4 e4 8.ba6 Ra6 9.Nd2=+) 7.a4 (7.Nc3 Be6=+) 7...Be6 (7...Be7 8.d3=+) 8.d3 e4 9.Nd2 ed3–/+ 10.Bd3 Be7 11.Bc3 0-0 12.Ngf3 Bg4 13.Qc2 Bf3 14.Nf3+/- g6 15.0-0 a6 16.ba6 ba6 17.Rab1 d5 18.cd5 Nd5 19.Ba1 c5? 20.Rfd1+- Nb4? 21.Qc3 f6 22.Bc4 (22…Nc4 23.Rd8 Rad8 24.Qc4 Rf7 25.Bc3+-) 1–0. Wall,Bill – Pi99, Microsoft Gaming Zone, 1999.

4.c4 d6= 5.Nc3 Nd4 (5...Be7 6.e3+=) 6.e3= Nf5 7.Nf3 Be6 8.Qc2 g6 9.Bd3 Qd7 10.Ng5 Nh5? (better is 10...Bg7=) 11.Ne6+- fe6 12.g4 Nhg7 13.gf5 Qc6?? (13...ef5 14.Bf1 Ne6+-) 14.Be4 Qc4 (14...Qd7 15.fe6 Ne6 16.Bb7+-) 15.fe6 (better is 15.Qa4!? Ke7 16.d3 Qa6 17.Qa6 ba6 18.Ba8 Nf5+-) 15...Ne6 (15...0-0-0+-) 16.Bb7 Rb8 17.Bd5 Qh4 (17...Qg4 18.h3 Nd4 19.ed4 Qd4 20.Nb5+-) 18.Be6 Qf6 (18...Ke7 19.Bd5 Kd8+-) 19.Nd5 (19.Qa4 Rb5 20.Qb5 c6 21.Qc6 Kd8 22.Qd7) 19...Qe6+- 20.Nc7 Kd7 21.Ne6 Ke6 22.0-0-0 (better is 22.Qc4!? Kd7 23.d4 Rc8 24.Qb5 Ke6 25.de5 a6 26.Qa6 Be7 27.ed6 Bd6 28.Bh8 Rh8+-) 22...g5 23.Rhg1 (better is 23.d4 Be7 24.Qb3 Kd7 25.de5 Rhf8 26.ed6 Bf6 27.Bf6 Rbc8 28.Kb1 Rf6 29.Qa4 Ke6 30.Qa7 Re8+-) 23...Rg8 24.e4 (better is 24.Qc4!? d5 25.Qg4 Ke7+-) 24...Rg6 25.Qc7 Rb5 26.Qh7 (better is 26.Qc4 d5 27.Qb5 d4 28.Qe8 Be7+-) 26...Rh6 27.Qf5 (27.Qc7!? a6 28.Rg5 Rf6+-) 27...Ke7 28.Qg5 Rf6 29.Kb1 a6 30.Rc1 Bh6 31.Qh4 Bg7 32.Rg7 Ke6 33.Qg4 Rf5 34.Qf5 1–0. Uguzel,Pinar – Keskin Isra,Damla, TUR–ch (Women), 2008.

4.c4 d6=+ 5.e3 Be7 =+.

4.c4 d6 5.e3 Bg4 6.Be2 Bf5 7.Nf3 Be7 8.Qa4 (8.d4 e4 9.Nfd2 d5=) 8...0-0 9.b5 Nb8 10.0-0 b6 (10...Nbd7!?=) 11.d4+= e4 12.Nfd2 a6 13.Nc3 a5 (13...Nbd7 14.ba6 c5 15.Qb5+/-) 14.f3 (14.Qc2 Kh8+/-) 14...d5 (14...ef3!? 15.Bf3 Ra7+/-) 15.cd5+- Nd5 16.Nd5 Qd5 17.Kh1 (better is 17.Bc4 Qb7 18.Qc2+-) 17...Bg5?? (better is 17...Bd6+/-) 18.fe4+- Be4 19.Ne4 Qe4 20.Bf3 Qe3 21.Ba8 Qe2 22.Rab1 Qg4 23.Qc4 Bd8 24.Bd5 Qh5 25.g3 Nd7 26.Rbe1 Nf6 27.Bf3 Qg6 28.d5 Nd7 29.Qc6 Nc5 30.Qg6 hg6 31.Re2 Nd3 32.Rd1 Nc5 33.d6 cd6 34.Rd6 Nb7 35.Bb7 Bc7 36.Rc6 Bd8 37.Rc8 Bf6 38.Rf8 Kf8 39.Bf6 gf6 40.Bc6 a4 41.Re8 Kg7 42.Rb8 (42…g5 43.Rb6+-) 1–0. Rempeli,Alexander – Eichinger,Tobias, Wuertemberg–ch U12, 2004.

4.c4 Ne4 5.d3+= Nf6 6.b5 Nb8 7.Be5+-.

4.c4 Ne4 5.d3 Ng5 6.b5 Nd4 7.e3 Nf5 8.Be5 d6 (8...a6 9.e4 Nh4 10.g3+-) 9.Bb2+- Be7 (9...a6 10.e4 Nh6 11.Be2+-) 10.e4+- Nh4? (better 10...Bf6!? 11.ef5 Bb2 12.Qe2 Be5+-) 11.g3 Bg4?? (11...Ng6 12.f4 Ne6+-) 12.Qg4 f5 (12...Ng6 13.Bg7 Ne5 14.Qf5+-) 13.ef5 (13.gh4?! fg4 14.hg5 a6 15.ba6 0-0 16.ab7 Ra7+=; 13.Qh4 Nf3 14.Nf3 Bh4 15.Nh4 fe4 16.de4 0-0+-) 13...d5 (13...Bf6 14.Nc3 Nf5 15.Qf5+-) 14.gh4 0-0 15.hg5 Re8 16.Ne2 Qd6 17.f6 (17.f6 Bd8 18.Bg2+-) 1–0. Pierre – Waldorffy, internet, 2020.

4.c4 Ne4 5.d3+= Ng5 6.b5 Ne7 7.Be5 d6 (7...f6 8.Bf4+=) 8.Bb2 Bf5?? (better 8...d5+=) 9.h4+- Ne6 (9...Ne4 10.de4 Be4 11.Nc3+-) 10.e4 Bg6 (10...a6 11.Qf3 Be4 12.de4+-) 11.h5 c5 (11...Bf5 12.ef5 Nf5 13.g4+-) 12.hg6 fg6 (12...Ng6 13.Nc3+-) 13.Nd2 (13.Nf3 a6+-) 13...Qa5 (13...a6 14.ba6 Ra6 15.Rb1+-) 14.Ngf3 h5 (14...0-0-0 15.g3 Kb8 16.Bh3+-) 15.g3 d5 (15...a6 16.Bh3 Nc7 17.ba6 Ra6 18.Qb3+-) 16.cd5 1–0. Duttagupta,Aniruddha (1825) – Zdana,Ludek (1800), FICGS, 2016.

4.d3 a5 5.ba5 (5.b5 Na7=) 5...Ra5 6.e4 Bc5 7.Nf3 Bd4 8.Nd4 Nd4 9.Bc3 Rc5 10.Bd4 ed4 11.g3 d6 12.Bg2 0-0 13.0-0 Ra5 14.Bf3 Ra6 15.c3 d5 (15...Nd7!?+=) 16.e5 Qd7? (16...Nd7 17.cd4 c6 18.Qb3+=) 17.Bg2?? (better is 17.ef6 Rf6 18.cd4+-) 17...Ng4 18.h4?? (better is 18.cd4 Re8 19.Nc3+=) 18...Ne5–/+ 19.cd4 f5?? (better is 19...Nc6–/+) 20.de5+- f4 21.d4 Rg6 22.Kh2 Rg4 23.Bh3?? fg3?? 24.fg3+- Rf1 25.Qf1 c6 26.Qf3 h5 27.Bg4 hg4 28.Qf4 c5 29.dc5 Qb5 30.Nc3 Qb2 31.Ne2! Qa1 32.Qg5 Qb2 33.Qd8 Kh7+= 34.Qc8 Qe2 35.Kg1 Qe3 36.Kg2 Qf3 37.Kh2 Qf2 38.Kh1 Qg3 39.Qb7 Qh4 40.Kg2 g3 41.Qd5?? Qh2–+ 42.Kf1 Qh3 43.Qg2+/- Qg4 44.Qh1 Kg8 45.Kg2?? Qe4+= 46.Kg1 Qe2 47.c6?? Qf2 0–1. Jakubowski,Bogumil – Rzeszowski,Maciej, Miedzywojewodzkie Mistrzostwa Mlodzikow Poland, 2010.

4.d3 a6 5.c4 b5 6.Nf3 bc4 7.Ne5 Ne5 8.Be5 d6 9.Bc3 Be6 10.e3 cd3 11.Bd3 Be7 12.0-0 0-0 13.Nd2 c5 14.Rc1 Nd5 15.Bb2 Nb6 16.Qc2+= g6 17.Nf3 c4 18.Qc3 f6 19.Bc2 Nd5? 20.Qc4+- Rc8 21.Qa6 Nb6 22.Nd4 Bc4 23.Bb3 d5 24.Bc4 Nc4 25.Ne6 Qd6 26.Qd6 Bd6 27.Nf8 Bf8 28.Bf6 1–0. Wall,Bill – Screaming, internet, 2003.

4.d3 a6 5.c4 d5!? 6.Nf3 dc4 7.Ne5 Ne5 8.Be5 Ng4 =.

4.d3 a6 5.Nf3 Bd6 6.e4 0-0 7.Be2 h6 (7...b5 8.0-0=) 8.c4 (8.Nbd2 b6+=) 8...b6 (8...Re8 9.Qa4+=) 9.Nbd2 (9.0-0 Bb7=) 9...Re8= 10.0-0 Bb7 11.Qc2 b5 (11...Qe7 12.Rfc1 Qe6 13.c5 bc5 14.bc5+=) 12.c5 (12.Rfe1+=) 12...Be7 13.d4 ed4+= 14.Nd4 Nd4 15.Bd4 d6 16.c6+/- Bc6?? 17.Qc6+- Nd7 18.Rac1 Ra7 19.Ba7 Ne5 20.Qc7 d5 21.Qe5 Bc5 22.Qd5 Ba7 23.Qd8 Rd8 24.Rfd1 Rd6 25.Nf3 Re6 26.Rc8 Kh7 27.Rd7 Bb6 28.Bd3 h5 29.Ng5 (29…Kg6 30.Ne6 fe6 31.Rc6+-; 29.e5 Rg6 30.Ng5 Kh6 31.Nf7 Kh7 32.Rh8) 1–0. alaamattar (2110) – langelli (2000), net–chess.com, 2006.

4.d3 d6 5.b5 Ne7 6.e3 =+.

4.d3 Bd6 5.e4 Nd4 6.Nd2 0-0 7.Ngf3 (7…Nf3 8.Qf3+=). kolokwium – kings, internet, 2006.

4.e3 a6 5.Nf3 e4 6.Nd4 =.

4.e3 Bb4?? 5.ab4+- Nb4 6.Qc1 (6.Be5 0-0+-) 6...Nbd5? (6...d6 7.d4 ed4 8.Bd4+/-) 7.c3 (better is 7.c4!? Nb6 8.c5+-) 7...d6+/- 8.Nf3 Bg4 9.Be2 0-0 10.h3 Bh5 11.0-0 b6 12.d3 c5 13.Nbd2 Rb8 14.e4 b5?? 15.ed5+- Nd5 16.c4 bc4 17.dc4 Nb6 18.Re1 Nc4 19.Nc4 d5 20.Ne3 e4 21.Nh2 Be2 22.Re2 a5 23.Re1 c4 24.Qc3 d4 25.Qd4 Qd4 26.Bd4 Rfd8 27.Bc3 Rd4 28.Bd4 Rd8 29.Bc3 a4 30.Red1 Rf8 31.Nhf1 g6 32.Ra3 Rb8 33.Rda1 Rb3 34.Rb3 ab3 35.Nc4 b2 36.Bb2 (36.Bb2 f6 37.Bf6 Kf7 38.Ra6 Kg8 39.Nd6 h6 40.Ra8 Kh7 41.Rh8; 36.Ra8) 1–0. Fournier,Frederic (1935) – istilli, Active Blind, 2007.

4.e3 b6 5.c4 Be7 6.Nc3 0-0= 7.Qc2 g6 8.Nf3 d6 9.Be2 Be6 10.d4 Qd7? 11.d5+- Nd4?! 12.ed4 Bf5 13.Qd2 Rae8 14.Rf1 Ng4 15.h3 Nf6 16.g4 Ne4 17.Qe3 Nf6 18.gf5 Qf5 19.de5 de5 20.0-0-0 Qh3 21.Nb5 Qg4 22.Ne5 Qc8 23.Qh6 Bd6 24.Ng4 Be5 25.Nf6 Bf6 26.Bf6 (26…Re2 27.Qg7) 1–0. kiloracer – mgokhale (1625), net–chess.com, 2005.

4.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3 e5).

4.e3 d6 5.b5 Ne7 6.Nf3 =.

4.e3 Bd6 5.Nc3!? =.

4.e3 Bd6 5.c4 0-0 6.c5 Be7 7.b5 Na5 8.Be5 b6 (8...Bc5 9.Qa4 c6 10.Bd3=) 9.cb6 cb6 10.Bb2 Bb7 11.Nf3 a6 12.ba6 Ba6 13.Ba6 Ra6 14.0-0 Nc4 15.Qb3 Nb2 16.Qb2 d5 17.Nc3 Ne4 18.Ne4 (18.Rfc1 Re8+/-) 18...de4+= 19.Nd4 f5?? (19...Qa8 20.f3 ef3 21.Rf3 Ra3 22.Rff1 Ra1 23.Ra1+=) 20.f4?? (20.Ne6 Bf6 21.Qa2 Qd6 22.Nc5 Kh8 23.Na6 Ba1 24.Qa1 Rd8+-) 20...g6?? (20...Qd5 21.d3=) 21.Rfd1 (21.Ne6 Bf6 22.Qa2+- (22.Nd8 Bb2 23.Ra2 Rd8 24.Rb2 Ra3+=)) 21...Bc5? 22.Qb5 Ra3?? 23.Ra3+- Ba3 24.Ra1 Bc5+= 25.Rd1 Bd4–/+ 26.ed4 Qd4–+ 27.Kh1 Rd8 28.g3 Qf2 29.Qc4 Kg7 30.Qc3? Kh6 31.Qc7 Qf3 32.Kg1 Rd3 33.Qb6?? Qe2 (33...Qe2 34.Rf1 e3 (34...Qd2?! 35.Qf6–+; worse is 34...Rd2 35.Qf2–+) 35.Qe3 Re3 36.de3 Kh5–+; 33...Qd1 34.Kg2 Rd2 35.Qf2 Qf3 36.Kh3 Qf2 37.g4 Qh2) 0–1. Fournier,Frederic – Kabutoejam, Partie evaluee, 1m + 0s, 2009.

4.e3 Bd6 5.d4 ed4–/+ 6.ed4 0-0 7.Nf3 Re8 8.Be2 Bf4 9.0-0 d5=+ 10.Bd3 h6 11.Nbd2 Ne4 12.Be4?? de4–+ 13.Ne5 Ne5 14.de5 Be5 15.Be5–/+ Re5 16.Nc4 Re8 17.Qd8 Rd8 18.Rfe1 Re8 19.Rad1 Bf5 20.f3? b5 21.Ne3=+ Bg6 22.fe4 Re4–/+ 23.Nd5 Re1 24.Re1 Bc2 25.Nc7 Rc8 26.Nb5= Ba4 27.Na7 Rc3 28.b5 Ra3 29.b6 Bb3?? 30.b7+- Ra7 31.b8Q Kh7 32.Qa7 f5 33.Re7 Kg6 34.Rg7 Kh5 35.Qe3 Bd5 36.Rh7 Kg4 37.Rh6 f4 38.Rg6 Kf5 39.g4 Kg6 40.Qf4 Be6 41.h4 Kg7 42.h5 Bf7 43.Qe5 Kh6 44.Qf5 Be8 45.Qf8 Kg5 46.Qe8 Kg4 47.h6 Kf5 48.h7 Kf6 49.h8Q (49…Kg5 50.Qhe5 Kg4 51.Q8h5#) 1–0. Nautiluschess – Conats, ICS blitz, 2001.

4.e3 Qe7 5.Nf3 b6 (better 5...d6=) 6.b5+/- Na5 7.Ne5 Qe5?? (better 7...Bb7+/-) 8.Be5+- Bd6 (8...Be7 9.Bd3+-) 9.Bf6 gf6 10.Nc3 (10.Qf3 Bb7 11.Qf6 Rf8+-) 10...Be5 (10...Bb7 11.Qh5+-) 11.d4 Bd6 12.Ne4 c6 (12...Be7 13.Qf3 Bb7 14.Nf6 Bf6 15.Qf6 Rg8+-) 13.Nd6 Kd8 14.Nf5 1-0. FeegLood (2650) - zues321, lichess.org, 2015.

4.e3 Be7 5.b5 Na5 6.Be5 b6 7.Nf3 h6 8.Be2 Bb7 9.d3 0-0 10.0-0 d6 11.Bb2 d5 12.Nbd2 c6 13.c4 Rc8 14.Rc1 dc4 15.Nc4 (15.dc4 Re8+/-) 15...Nc4 (better is 15...cb5!? 16.Na5 Rc1 17.Qc1 ba5+=) 16.dc4+/- (worse is 16.Rc4 cb5 17.Rc8 Qc8+=) 16...c5 17.Qd8 Rcd8 18.Rfd1 Bd6 (18...Ne4 19.Rd3+/-) 19.Rc2 Ne4 20.Nd2 Be7 21.f3 Nd6 22.Nf1 Rfe8 23.Rcd2 Rd7 24.e4 Bg5?? (better is 24...f6+-) 25.Rd6 Rde7 26.Ng3 g6 27.Kf2 f5 28.ef5 Bf4 29.Rg6 Kf7 30.Rg7 Kf8 31.Re7 Re7 32.Bc1 Bc1 33.Rc1 Rd7 34.Rd1 Ke8 35.Rd7 Kd7 36.Ne4 a5 37.g4 Ke7 38.h4 Bc8 39.Kg3 Bd7 40.a4 Kf7 41.Kf4 Bb5 42.cb5 (42.cb5 Ke7 43.f6 Kf7 44.Bc4 Ke8 45.g5 hg5 46.hg5 Kd7 47.g6 Kc7 48.f7 Kd7 49.g7 Kc7 50.f8Q Kd7 51.Qf7 Kd8 52.g8Q) 1–0. Fournier,Frederic – Gonzales,Jean Francois, FRA Grand Prix Oise, 2000.

4.e3 Be7 5.Nf3 d6 6.c4 0-0 7.Be2 Bg4 8.0-0 h6 9.d3 Bh5 10.Nbd2 Bg6 11.Nh4 Bh7 12.Rc1 Kh8 13.Nhf3 Nd7 14.e4 f5 15.ef5 Bf5 16.Ne4 Nf6 17.Nf6 Rf6 (worse is 17...gf6 18.d4+/-) 18.d4 Rg6 19.de5 Ne5 20.Ne5 de5 21.Qd8 Rd8 22.g3?? (22.Be5 Re6 23.f4 c5+/-) 22...h5?? (better is 22...Rd2 23.Bh5 Rb2 24.Bg6 Bg6–+) 23.Bh5 Rh6 24.Bf7 Kh7 25.Be5+- g6 26.Bd5 c6 27.Bg2 Bh3 28.Bh3 Rh3 29.Kg2 Rh5 30.Rcd1?? Re5–/+ 31.Rd8 Bd8 32.Rd1 Bf6 33.Rd7 Re7 34.Rd6 (34.Rd6 Bb2 35.Rd3–/+). Fournier,Frederic (1890) – kenickB (1750), Active (4/1), 2004.

4.e3 Be7 5.Nf3 d6 6.d4 e4 7.Nfd2 d5 8.c4 Be6 9.Nc3 Qd7 10.Qc2 0-0-0 11.cd5 Bd5 12.Nce4 Qf5?? 13.Nd6!!+- Bd6 14.Qf5 Be6 15.Qc2 g6 16.e4 Be7 17.d5 Nd5 18.ed5 Rd5 19.Bh8 Bf5 20.Qc3 Rd6 21.Bc4 f6 22.0-0 Be6 23.Be6 Re6 24.Rfe1 Ne5 25.Nf3 Bd6 26.Bf6! Rf6 27.Ne5 1–0. Bui Dac Khuong – Vo Cao Tue, VIE–chT, 2003.

4.e4 d5 5.ed5 Nd5 6.d3 Bd6 7.Nf3 0-0 8.Be2 Bg4 9.0-0 Nf6 10.Nbd2 Bf3 11.Bf3 Rb8 12.Nc4 a6? 13.Re1 Re8 14.Bc6 bc6 15.Ne5 Be5 16.Be5 Rb5 17.Bf6 Re1 18.Qe1 gf6 19.c4 Re5 20.Qc3 Re2 21.d4 Qd7 22.Kf1 Qe6 23.Qg3 Kf8 24.Rc1 Ra2 25.h4 Qe2 26.Kg1 Qd2 27.Rf1 Qd4 28.c5 a5 29.h5 ab4 30.ab4 Qb4 31.h6 Qc5?? 32.Qc7 Qe7? 33.Qc6 Ra7?? 34.Qc8 Qe8 35.Qg4 Ke7?? 36.Re1 (36...Kd8 37.Re8 Ke8 38.Qc8 Ke7 39.Qc5 Ke6 40.Qa7+-; 36.Qb4 Kd7 37.Qb5 Kc7 38.Rc1 Kd8 39.Qb8 Kd7 40.Qa7 Ke6 41.Re1 Kd5 42.Re8 Kc6 43.Rc8 Kd6 44.Qc5 Ke6 45.Re8 Kd7 46.Re7 Kd8 47.Qc7#) 1–0. chessH – Geordiedazza, ChessWorld.net, 2003.

4.e4 Ne4 5.Nf3 d5 6.d3 –/+.

4.Nf3 d5 5.Ne5+= Ne5 6.Be5 Bd6 7.Bd6 cd6 (7...Qd6 8.e3+=) 8.d3 (8.e3 0-0+/-) 8...0-0 (8...Ng4!? 9.Nd2 Qh4=) 9.Nd2 Be6 10.Nf3 Rc8 11.e3 Qc7 12.Rc1 Qc3 13.Qd2 Qa3 14.Be2 b6 15.0-0 a5 16.ba5 ba5 17.Ra1 Qc3 18.Qc3 Rc3 19.Rfc1 (19.Ra5 Rc2 20.Nd4 Rb2+/-) 19...Rfc8 (19...Ra8 20.Nd4=) 20.Ne1 (20.Ra5 Rc2 21.Rc2 Rc2 22.Ra8 Rc8 23.Rc8 Bc8 24.Nd4+/-) 20...Bd7?? (better is 20...Ra8+=) 21.Ra5+/- Bc6 22.f3 (22.d4!? Bd7+-) 22...d4+/- 23.ed4 Bd5 24.Bd1 Bb3 25.Rca1 Rc2?? 26.Bc2 Bc2 27.Nc2 h5 28.Ra8 Ra8 29.Ra8 Kh7 30.Ne3 Kg6 31.Ra7 Kg5 32.Nc4 h4 33.Nd6 Nd5 0–1. Fournier,Frederic – fritzman, Active, 2007.

4.Nf3 Bd6 5.e3 0-0 6.Bc4 a5 7.0-0 ab4 8.ab4 Ra1 9.Ba1 Ne4 10.h4 Bb4 11.Ne5 Qh4 12.f4 Nd8 13.Bd4 Ne6 14.Nd7 Bd7 15.Be5 Re8 16.Bc7 Nc7 17.f5 Bc5 18.g4 Qg3 19.Kh1 Nf2 20.Rf2 Bc6 21.e4 Be4 22.Rg2 Qg2# (22...Bg2?!=) 0–1. Droopy – babylyub, ICS rated blitz match, 1998.

4.Nf3 e4+= 5.Nd4 Nd4 6.Bd4 d5 +=.

4.Nf3 e4+= 5.Ng1 d5 6.e3 Bf5 7.Ne2 Bd6 8.Ng3 Be6 9.Nh5 Nh5 10.Qh5 0-0 11.Qd1 (11.Be2 a5 12.b5 Ne5+=) 11...Qg5 12.Qc1 (12.Nc3 Rfd8–/+) 12...Rad8 13.c4 (better is 13.Nc3!?–/+) 13...dc4–+ 14.h4 (14.Nc3 Qg6–+) 14...Qg6 (14...Qg4 15.Qd1 Qf5 16.g4–+) 15.Qc3 (15.h5 Qg4–+) 15...Be5 (15...h5 16.Qc2–+) 16.Qc1 Bb2 17.Qb2 b5 (better is 17...Qf5!?–+) 18.h5–/+ Qg5 19.f4?? (better is 19.h6–/+) 19...Qg3 20.Kd1 Bg4 (better is 20...Qe3 21.Nc3 Qf4–+) 21.Kc1?? (21.Kc2 h6 22.Nc3–+) 21...Qe1 22.Kc2 Rd7 23.Qc1 Bd1?? 24.Qd1+- Qd1 25.Kd1 Rfd8 26.a4?? a6 27.g4+/- Nb4 28.Bh3?? Nd3 29.Rf1 Nb2= 30.Kc2 Na4 31.g5 Rd6 32.Nc3?? Rd2–+ 33.Kc1 Nc3 34.Ra6 b4 35.Rc6 White prepares the advance h6 35...Na2 36.Kb1–+ c3 37.Rg1 b3 38.h6 Rd1 39.Rd1 Rd1 0–1. Rolea,Maria_Iulia – Bureta,Karla Claudia, Calimanesti ROM, Ch U10 (g), 2014.

4.Nf3 Be7 5.Ne5 d6 6.Nc6 bc6 7.e3 0-0 8.b5 cb5 9.Bb5 Bd7 10.Bd3 h6 11.Nc3 c5 12.Ne4 d5 13.Nf6 Bf6 14.Bf6 Qf6 15.0-0 c4 16.Be2 Rfe8 17.h3 a5 18.Bg4 Bg4 19.Qg4 Re5 20.f4 Rf5 21.Rf3 d4 22.e4 Rc5 23.Rg3 Qg6 24.Qf3 Qd6 25.e5 Qd5 26.Qg4 g6 27.h4 h5 28.Qg5 Kg7 29.Qf6 Kf8 30.Qh8 Ke7 31.Qf6 Kf8 32.d3 cd3 33.cd3 Qe6 34.Qh8 Ke7 35.Qa8 Qb6 36.Qf3 Rc3 37.Qd1 Qb3 38.Rb1 Qd1 39.Rd1 Ra3 40.Rf3 Rb3 41.Rff1 Rb8 42.Ra1 Ra8 43.Rfb1 a4 44.Rb7 Ke6 45.Rb4 a3 46.Rd4 a2 47.Rb4 Kf5 48.g3 Kg4 49.Kg2 Ra3 50.Rb2 Rd3 51.Rba2 Rg3 52.Kh2 Kh4 53.Ra4 Kg4 54.f5 Kf5 55.Rf1 Ke5 56.Ra5 Ke6 57.Kg3 f5 58.Ra6 Kf7 59.Kf4 Kg7 60.Rb1 Kh6 61.Rbb6 (time, 0–1). Nautiluschess – Conats, ICS blitz, 2001.

5.a4 Nc4!? 6.Bc3 d6 +=.

5.a4 Be7 6.Be5+= Ng4? (better is 6...0-0+=) 7.e4?? (better is 7.Bg7!? Rg8 8.Bc3+-) 7...Bf6?? (better is 7...Ne5!? 8.Nf3 Ng6–+) 8.Bf6?? (better is 8.Bc3 Bc3 9.Nc3+/-) 8...Qf6–/+ 9.Nc3?? 0-0 10.Nd5 Qf2 0–1. georginoh (1715) – ringo (1790), net–chess.com, 2013.

5.Bc3 Nc4 6.e3+= d5 7.Bc4 dc4 8.Be5 Ng4 9.Bd4 c5 (9...a6!?+/-) 10.bc6+- bc6 11.Qf3 Bd7 12.Qe4 Qe7 13.Qe7 Ke7 14.Nf3 f6 15.0-0 (15.h3 Nh6+-) 15...Kf7+/- 16.h3 Nh6 (16...c5 17.Bb2 Rb8 18.Ra2+/- (18.hg4?! Rb2 19.g5 Bg4=)) 17.e4+- c5 18.Be3 Bb5 (18...g5 19.Nc3+-) 19.Bh6 gh6 20.Nc3 a6 (better is 20...Bc6+-) 21.Rfb1 Bc6 (21...Re8 22.Nb5 ab5 23.Rb5 Re4 24.a4+-) 22.Rb6 Bd7 23.Nd5 Bg7 24.Rb7 Rad8 25.Nb6 Ke8 26.Nc4 (26...Bb5 27.Rg7 Bc4 28.Rb1+-; 26.Rd7?! Rd7 27.Nd7 Kd7+-) 1–0. Wall,Bill – Shreek, internet, 2002.

5.Bc3 c6 6.Be5 Nc4 7.Bd4 =.

5.Be5 Nc4 6.Bd4 a6 7.ba6 Ra6 8.e3 +=.

5.Be5 Nc4 6.Bd4 a6 7.ba6 Ra6 8.Nf3 +=.

5.Be5 Nc4 6.Bd4 d5 7.Nf3 (better is 7.e3+=) 7...Ne4? (better is 7...a6 8.ba6 Ra6+=) 8.d3+- c5? (better is 8...Ncd6 9.de4 de4+-) 9.bc6 (9.de4?! de4 10.Ne5 Nb6+/-; 9.dc4 cd4 10.Qd4 Bc5 11.Qe5 Qe7 12.Qe7 Ke7+-) 1–0. Wall,Bill – Rustynet, internet, 2004.

5.Be5 Bc5 6.e3 0-0 7.Nc3 d5 (7...Be7 8.d4+=) 8.Bf6 Qf6 9.Nd5 Qd6 10.Nb4 Bb4? (better 10...Re8+-) 11.ab4+- Nc4 (11...Nb3 12.cb3 Be6 13.Bc4+-) 12.Bc4 Qb4 13.Bd3 Bd7 (13...a5 14.ba6! ba6 15.Nf3+-) 14.Nf3 (14.Qh5 f5+-) 14...Rad8 (14...Rfd8 15.Nd4+-) 15.0-0 (better 15.Ra7 Qc5 16.Ra5+-) 15...Bh3 (15...Qc5+-) 16.gh3 Rd5 (16...Qc5 17.Nd4+-) 17.Ra7 Rh5 (17...Rb8 18.Qa1 Qf8 19.Qa4+-) 18.Rb7 Rh3 (18...Qd6 19.Nd4 Rh3 20.f4+-) 19.Ne5 Qh4 (19...Rh6 20.Qg4 Qd6 21.Qg3+-) 20.Qg4 Rg3 21.Qg3 (better 21.fg3 Qg4 22.Ng4 h6 23.Rc7 h5+-) 21...Qg3 22.fg3 h6 23.Rc7 g5 24.Nf7 (24.Rff7 Rf7 25.Rf7 Kh8 26.Bh7 g4 27.Ng6) 24...g4 (24...Kg7 25.Ng5 Rf7 26.Rff7 Kg8 27.Rc8) 25.Nh6 Kh8 26.Rf8 1–0. michaelbuss (2780) – interloper, ChessWorld.net, 2011.

5.Be5 Bc5 6.e3+= 0-0 7.Nc3 d6 8.Bf6 Qf6+=.

5.Be5 Bc5 6.e3+= 0-0 7.Nf3 h6 8.d4 (8…Be7 9.Nc3+=). Simon Wasum – Eugene, itsyourturn.com, 2001.

5.Be5 Bc5 6.e3 d6 7.Bc3 c6 8.Qf3 0-0 9.Bf6 Qf6 10.Qf6 gf6 11.d4 Bb6 12.Nd2 cb5 13.Bb5 Bf5 14.Bd3 Bg6 15.Ne2 Nc6 16.Nf4 Rae8 17.Kd1 Kg7 18.Rb1 Re7 19.Nc4 Bd8 20.Nd6 b6 21.Nf5 Bf5 22.Bf5 Bc7 23.Nd5 (23...Bd6 24.Ne7 Ne7 25.Bd3+-) 1–0. Klaus Behrmann (2180) – chessH, ChessWorld.net, 2003.

5.Be5 Bd6 6.Bd6+- cd6 7.e3 0-0 8.Nf3 a6 9.Nc3 d5 10.ba6 ba6 11.Bd3 Bb7 12.0-0 d4 13.Nd4+- Nc6 14.Qf3 Nd4 (15.Qb7 Nc6+-). Woschkat,Karl_Heinz – Pieleck,Andreas, remoteschach.de, 2003.

5.Be5 Ne4 6.e3 d6 7.Bb2 Qe7 (7...d5 8.d3 Nf6 9.Bc3+/-) 8.c4 (8.d3 Nf6 9.Qf3+/-) 8...Nc4 (better is 8...Qh4!? 9.g3 Qd8+/-) 9.Bc4+- g6?? (better is 9...Nf2 10.Kf2 Qh4 11.g3 Qc4+-) 10.Bh8 Bf5 (10...Nf2 11.Kf2 Qh4 12.g3 Qc4 13.Nc3+-) 11.Nf3 (11.Bd4 0-0-0+-) 11...0-0-0 12.Nc3 Bh6 (12...Nc3 13.Bc3 d5 14.Be2+-) 13.Nd5 Qf8 14.Bd4 g5 (14...Nc5 15.0-0+-) 15.Qa4 Be6 16.Qa7 Rd7 17.Qa8 1–0. Benassi,Aspasio (2105) – Zdana,Ludek (1800), FICGS, 2016.

5.Be5 Qe7 6.Bc3 (6.Bc7 Ne4 7.f3+/- (7.Ba5?! Qf6 8.Nf3 Qa1+=)) 6...Nc4 7.e3 d5 8.Nf3 g6 9.d3 (9.Bc4!? dc4 10.Bb4+/-) 9...Nd6+= 10.a4 c5 11.bc6! bc6 12.Ne5 c5 13.Nd2 Bg7 14.Ndf3 (better is 14.Qf3+/-) 14...Ng4+= 15.d4 cd4 (better is 15...Nf2 16.Kf2 Ne4 17.Kg1 Nc3+/-) 16.Bd4?? (better is 16.Qd4 a6 17.Rb1+/-) 16...Be5 (16...Ne5 17.Ne5 Be5 18.Bb5 Nb5 19.ab5–+) 17.Be5? (better is 17.Ne5!? Ne5 18.f4+=) 17...Ne5–+ 18.Ne5 Qe5 19.Bd3 0-0 20.0-0 Qg5 21.Kh1 Nf5 22.Bf5 Bf5 23.Qd5 Rad8 24.Qb7 Rd7 25.Qb5 Qf6 26.c4 Bd3?? 27.Qd7+- Bf1 28.Rf1 Rd8 29.Qa7 Rd2? 30.Kg1+- Rc2 31.Qd4 Qd4 32.ed4 Rc4 33.Ra1 Rd4 34.a5 Kf8 35.a6 Ke8?? 36.a7 Rd8 37.a8Q Ra8 38.Ra8 Ke7 39.f4 Kf6 40.g3 h5 41.Kf2 Kf5 42.Kf3 f6 43.h3 g5 44.fg5 Kg5 45.Rg8 Kf5 46.h4 Ke6 47.Kf4 Kf7 48.Ra8 Ke6 49.Ra6 Kf7 50.Kf5 Kg7 51.Rf6 Kg8 52.Kg5 Kg7 53.Kh5 Kf6+- 54.g4 Kg7 55.Kg5 Kh7 56.h5 Kg7 57.h6 Kh7 58.Kh5 Kh8 59.Kg6 Kg8 60.g5 Kh8 61.Kf6 Kg8 62.g6 Kh8 63.g7 Kh7 64.Kf7 Kh6 65.g8Q Kh5 66.Kf6 Kh4 67.Kf5 Kh3 68.Kf4 Kh4 69.Qg4 1–0. Fournier,Frederic (1605) – Urban, Active, 2007.

6.Bb2 Bf5 7.e3 Nc4?? (7...Be7 8.Nf3+=) 8.Bc3 (better is 8.Bc4 d5 9.Be2+-) 8...Nb6 9.a4 Nc8 (9...Be7 10.a5 Nbd5 11.a6 ba6 12.Ra6+/-) 10.Nf3 Be7 11.Be2 0-0 12.0-0 a6 13.ba6 ba6 14.d3 d5 15.Nbd2 Nd6 16.Re1 Bg6 17.Bf1 Nf5 18.e4 de4 19.Ne4 Ne4 20.Re4 Nd6 21.Re1 Nf5 22.Qe2 Re8 23.Qe5 Bd6 24.Qd4?? (24.Qe8 Qe8 25.Re8 Re8+/-) 24...c5 (better is 24...Nd4 25.Re8 Qe8 26.Bd4 Rb8–+) 25.Re8 Qe8 26.Qd5 Ne7?? 27.Qd6+- Nf5 28.Qc5 Rc8 29.Qb4 Bh5 30.Nd4 Nd4 31.Qd4 Rd8 32.Qg7 1–0. Fournier,Frederic (1700) – thanathos18 (1630), Active (6/0), 2004.

6.Bc3 Nc4 +=.

6.Bc3 c5= 7.d3 Be7 8.Nf3 0-0 9.e4 a6 10.ba6 ba6 11.Be2+= Nh5 12.0-0 Nc6 13.d4 cd4 14.Nd4 Nd4 15.Qd4 Bf6 16.e5?? Be5= 17.Qe4 Nf4 18.Bd3 Nd3 19.Qa8 Bh2 20.Kh2+/- Qh4 21.Kg1 Nf4 22.Re1 Nh3?? 23.gh3+- Bh3 24.Re8 Qg4 25.Kh2 (25…Qf4 26.Kh3 Qf5 27.Kg3 Qg5 28.Kf3 Qf5 29.Ke3 Qg5 30.f4 Qe7 31.Re7 Ra8 32.Nd2+-) 1–0. Wall,Bill – Quintero P, internet, 2000.

6.Bc3 c5 7.e3 Be7 (7...d5 8.Be2+=) 8.Nf3+/- 0-0 9.d4 Bg4 (9...Be6 10.dc5 dc5 11.Qd8 Bd8 12.Nbd2+/-) 10.dc5+/- dc5 11.Qd8 Rad8?? (11...Bd8!? 12.Nbd2 Nd5+/-) 12.Be2 (better is 12.Ba5 b6 13.Bc3+-) 12...Bf3 (12...b6 13.Ba5 ba5 14.Ne5+-) 13.Bf3 (13.Ba5?! Bg2 14.Bd8 Rd8+/-) 13...b6 14.Nd2 c4 (better is 14...Nd5 15.Ba5 ba5 16.Bd5 Rd5+-) 15.Ba5 ba5 16.Nc4 Rc8 17.Bc6 Bc5 18.Na5 Rcd8 19.Nb7 (19.Nb7 Be7 20.Nd8 Rd8 21.Ke2+-) 1–0. Wall,Bill – Acced, chess.com, 2008.

6.Bc3 c5= 7.Bf6 Qf6 8.Nc3 g6 =.

6.Bc3 Bd7?? 7.Ba5+- Ne4 (7...Bb5 8.Nf3+-) 8.Nf3 Be7 (8...Bb5 9.Nc3 Bc6 10.e3+-) 9.e3 Bh4 10.Nh4 Qh4 11.Qf3 b6 12.d3 (better is 12.g3 Qe7 13.Nc3 ba5 14.Qe4 Qe4 15.Ne4 Ke7+-) 12...Nf2 (12...Qf2 13.Qf2 Nf2 14.Kf2 ba5+-) 13.Qa8 Ke7 14.Qh8 Nd3 (14...Nh1 15.Kd2 ba5+-) 15.Ke2 Qe1 (15...Nf2 16.Be1 Bg4 17.Kd2 Ne4 18.Kc1 Qe1 19.Kb2 Qh4 20.Qg7 Nf2+-) 16.Be1 (16.Be1 Ne1 17.Ke1+-) 1–0. Knudsen,Niels – Desrochers,Marcel, CN.1998.0.091, 1998.

6.Bd4 c5 7.bc6 bc6 +=.

5.e3 Nb5? 6.Bb5+- a6 7.Be2 Bc5 (7...d6+-) 8.Be5 d6 9.Bb2 0-0 10.Nf3 Bf5 11.0-0 b5 12.d4 Bb6 13.c4 c5 (13...bc4 14.Bc4 d5 15.Bd3 Bd3 16.Qd3+-) 14.dc5 dc5 15.cb5 ab5 16.Bb5 Bg4 17.Qd8 Rfd8 18.Nbd2 Ba5 19.Bc6 Rac8 20.Bf6 Rc6 21.Bd8 Bd8 22.Rfc1 Bf3 23.Nf3 c4 24.Nd4 Rc8 25.Rc3 Bf6 26.Rac1 Bd4 27.ed4 Ra8 28.d5 f6 29.d6 Kf8 30.Rc4 Ra3 31.Rc8 Kf7 32.d7 (32.d7 Rd3 33.d8Q Rd8 34.Rd8+-) 1–0. Fournier,Frederic (1820) – fpavan (1885), Active (5/0), 2004.

5.e3 Nb5? 6.Bb5+- a6 7.Be2 Bc5 8.Be5 d6 9.Bf6 Qf6 10.Nc3 0-0 11.Nd5 Qe6 (11...Qd8+-) 12.Nc7 Qd7 (12...Qe7 13.Na8 Be6 14.d4+-) 13.Na8 h6 (13...b5 14.d4 Ba7 15.Bf3+-) 14.a4 (14.d4!? Ba7 15.c4 Qe7+-) 14...b5 15.a5 (15.ab5 Bb7 16.Kf1 Ra8+-) 15...Bb7 16.Nb6 Bb6 17.ab6 Bg2 18.Bf3 Bh1 19.Bh1 b4 20.Ra6 Qb5 (20...d5 21.Qe2 b3 22.cb3+-) 21.Qe2 Qc5 (21...Qd7 22.Qc4 b3 23.Qb3+-) 22.Qd3 g5 (22...Qg5 23.b7 Qg1 24.Qf1 Qh2+-) 23.b7 Kg7 24.Ra8 b3 25.Rf8 (25.Rf8 Kf8 26.b8Q Kg7 27.Bd5 Qd4 28.Qd4 Kh7 29.Be4 f5 30.Bf5) 1–0. pcmvr – tbarnes, net–chess.com, 2018.

5.e3 Nb5? 6.Bb5+- a6 7.Be2 d6 8.Nf3 Be6 9.0-0 h6 10.d4 Be7 (10...e4 11.Nfd2+-) 11.de5 de5 12.Qd8 Rd8 1-0. black_bishop_88 (2500) - Abscence (2330), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 Nc6 4.b5 Nd4)

5.e3 Nb5? 6.Bb5+- Bd6 7.Nf3 e4 8.Nd4 (8.Nh4 0-0+-) 8...c5 (8...0-0 9.0-0 a6 10.Be2+-) 9.Nf5 0-0 (9...Bf8 10.Nc3 a6+-) 10.Nd6 Qe8 (10...Qe7 11.Nc8 Rac8+-) 11.Ne8 Re8 12.Bf6 gf6 13.Qg4 Kf8 14.Bd7 Rd8 15.Bc8 Rdc8 16.Qe4 Rc6 17.Qh7 Ke7 18.Nc3 Ke8 19.Qg8 Ke7 20.Qa8 Rd6 21.Qb7 Ke6 (21...Kf8 22.Qb8 Ke7 23.Rb1 Rd7 24.Qa8 a5 25.Qe4 Kd8 26.Nd5 Rb7 27.Rb7 Kc8 28.Qe7 a4 29.Qd7) 22.Qe4 Kd7 23.Rb1 c4 (23...Re6 24.Rb7 Ke8 25.Rb8 Kd7 26.Qb7 Kd6 27.Rd8 Ke5 28.Qe4) 24.Rb7 Kd8 (24...Kc8 25.Qe7 Rd2 26.Qc7) 25.Qe7 Kc8 26.Qc7 1–0. Larmet,Nino – Sandjivy,Yann, 8th Saint Denis REU, Reunion Open, 2016. (=1.a3 e5 2.b4 Nc6 3.Bb2 Nf6 4.b5 Nd4)

5.e3 c6?? 6.ed4+- ed4 7.Bd4 Qe7 8.Qe2 Qe2 9.Be2 cb5 10.Bb5 Bd6 11.Nf3 0-0 12.0-0 a6 13.Ba4 (13.Bd3!? Nd5 14.Re1 Nf4+-) 13...b5 14.Bb3 Ne4 (14...Bb7 15.Nh4+-) 15.d3 (better is 15.Bd5 Nd2 16.Nbd2+-) 15...Nc5 16.Bd5 Rb8 17.Nc3 Bb7 18.Bb7 Rb7 19.Rfe1 h6 20.Bc5 Bc5 21.Ne4 Bb6 22.Nd6 Rc7 23.Re2 Bc5 24.Ne4 Ba7 25.Rc1 d5 26.Ned2 Bb6 27.Nb3 a5 28.Kf1 a4 29.Nbd4 Bd4 30.Nd4 Rc3 31.Nb5 Rcc8 32.c4 dc4 33.dc4 Rfd8 34.Ke1 Kh7 35.Rd2 Re8 36.Re2 Red8 37.Rcc2 f6 38.Red2 Re8 39.Kf1 Re6 40.Nd4 Rb6 41.c5 Rb1 42.Ke2 Re8 43.Kf3 Ra1 44.Nb5 Rb8 45.Rb2 Rh1 46.h3 Re1 47.Rdc2 Re5 48.c6 Rf5 49.Kg3 Rfb5 50.Rb5 Rb5 51.c7 Rg5 52.Kh2 Re5 53.c8Q Re1 54.f3 Re7 55.Qf5 g6 56.Qc5 Rb7 57.Qc8 Rb3 58.Qd7 Kh8 59.Rc8 1–0. Fournier,Frederic (1805) – Dinho, Active, 2007.

6.Be5 b6 7.Nf3 Bb7 8.Be2 Bc5 9.a4 Qe7 10.d4 Bd6 11.0-0 0-0 12.a5 ba5 13.Ra5 Bb4 14.Ra4 Ne4 (better 14...Nd5!?+-) 15.d5 Bd5? (15...N6g5 16.Ng5 Ng5 17.Bc7 Rfc8+-) 16.Qd5 Nf6 (16...N4g5 17.Ng5 c6 18.Qb3 Ng5 19.Rb4 Qe5 20.f4 Nh3 21.gh3+-) 17.Bf6 gf6 18.Qe4 Bd6 19.Bd3 Qd8 (19...f5 20.Qf5 f6+-) 20.Qh7 1-0. pereira – Luismanuel, internet, 2021.

6.Be5 d5 7.c4 Be7 8.Qc2 0-0 9.Nf3 Bd7 10.Nc3 dc4 11.Bc4 Ng4 12.Nd5 Ne5 13.Ne5 Rc8 14.Ne7 Qe7 15.0-0 c6 16.bc6 Bc6 17.d4 (17.Qf5 a6+/-) 17...Ng5? (better is 17...Bg2!? 18.Kg2 b5+=) 18.Qa2 Bd7 19.Bd5 b6 20.f4 Ne6 21.Rf3 f6?? (better is 21...Rc3+/-) 22.Nd7+- Rfe8 23.f5 Qd7 24.Be6 Re6 25.Qe6 Qe6 26.fe6 Kf8 27.d5 Ke7 28.e4 Rc4 29.Re1 Rc7 (29...Rd4 30.Rc3 f5 31.Rc7 Ke8 32.Rec1 Rd2 33.Rg7 Rd1 34.Rd1 Kf8 35.Rf7 Ke8 36.Rc1 Kd8 37.Rd7 Ke8 38.Rc8) 30.e5 fe5 (30...Rc8+-) 31.Rf7 Kd6 32.Rc7 Kc7 33.Re5 Kd8 34.d6 Ke8 35.Kf2 1–0. combijack (1830) – myminov (1730), gameknot.com, 2013.

6.Be5 d6 7.Bb2 Bd7 8.Nf3 Be7 9.d4 c6 10.bc6 bc6 11.Bd3 Rb8 12.Qc1 0-0 13.Nbd2 h6 14.0-0 c5 15.c3 Qb6 16.Rb1 Rfd8 17.c4 d5 18.dc5 Bc5?? (better is 18...Qc5 19.Nd4 dc4 20.Nc4 Qd5+/-) 19.Bf6+- Qb1 (19...Qc6 20.Bd8 Rd8+-) 20.Qb1 (better is 20.Bb1 gf6 21.cd5+-) 20...Rb1 21.Bd8 (better is 21.Rb1 gf6 22.cd5+-) 21...Rf1+/- 22.Kf1 Nd8 23.cd5 Ba3 24.e4 Bb2 25.Ke2 Nb7 26.Nc4 Bc3 27.Nfe5 Bb5 28.f3 Nc5 29.Bb1?? Be5–+ 30.Ba2 Bh2 31.Kd2 Bf4 32.Kc3 a6 33.Kb4 Nd3 34.Kc3 Ne1 0–1. Fournier,Frederic – JuliaFerdinandC, Active, 2008.

6.Be5 d6 7.Bb2 Nd7 8.Nf3 Nb6 9.c4 Ng5 10.Be2 Bg4 (better is 10...Nf3!? 11.gf3 Be6+=) 11.d3+- Nf3 12.Bf3 Bf3 13.Qf3 (worse is 13.gf3 d5 14.Qc2 a6+/-) 13...Be7 (13...d5 14.0-0+-) 14.Nc3 (14.Bg7 Rg8 15.Bd4 d5+-) 14...Bf6 (14...Rb8 15.0-0+-) 15.Rc1 (better is 15.Qb7 0-0 16.0-0+-) 15...Na4?? (better is 15...Rb8+-) 16.Na4 Bb2 17.Nb2 0-0 18.Qb7 Qg5 19.0-0 Rfe8 (19...Qe7 20.Rb1+-) 20.Qf3 (20.Qc7!? Qg6+-) 20...Qg6 21.e4 Re6 22.Rfe1 Rf6 23.Qg3 Qh6 24.Qe3 Qg6 25.g3 Re8 26.Qd2 Ree6 27.f4 Re8 28.f5 Qg4 29.Qe2 Qh3 30.Qg2 Qg4 31.Re2 Rh6 32.Rce1 Qh5 33.Nd1 Re5 34.Ne3 f6 35.Rf2 Qe8 36.Qf3 c6 37.Ng4 cb5 38.Nh6 gh6 39.cb5 Rb5 40.d4 a5 41.Rfe2 a4 42.e5! de5 43.de5 Re5 44.Re5 fe5 45.Qd5 Kg7 46.Qe5 Qe5 47.Re5 Kf6 48.g4 Ke5 49.Kf2 Kf4 50.f6 Kg4 51.f7 Kh3 52.f8Q Kh2 53.Qh6 1–0. Fournier,Frederic – 666Diablo666(C) (2075), Active, 2007.

6.Be5 d6 7.Bb2 Be7 8.Nf3 0-0 9.d4 1–0. Fournier,Frederic (1925) – madara48 (1875), Active, 2011.

6.Be5 d6 7.Bb2 Be7 8.Nf3 Bd7 9.c4 a6 10.Nc3 ab5 11.cb5 c6 12.bc6+/- bc6 13.Bd3 Rb8 14.Qc2 h5 15.0-0 h4 16.Ne2 d5 17.Rfc1 d4 18.Ned4+- c5 19.Nf5 Rh5 20.N3h4 c4 21.Bc4 Rc8 22.Qb3 Ng4 23.Ng7 Ng7 24.Bf7 (24…Kf8 25.Ng6#) 1–0. Wall,Bill – RedLady, internet, 2003.

6.Be5 Be7 7.Nf3 0-0 8.Bd3 d6 9.Bc3 Nd5 10.0-0 Nc3 11.Nc3 Ng5 12.Ng5+- Bg5 13.Qh5 g6 14.Qf3 f5 15.Bc4 Kg7 16.Qd5 Qe7 17.d4 Rb8 18.h3 Bd7 19.Bb3 Rf6 20.Qc4 Be6 21.Nd5 Qf7 22.Qc7+- Qc7 23.Nc7 Bb3 24.cb3 d5 25.Nd5 Rd6 26.Nc7 Rc8 27.Rac1 Kh6 28.Rfd1 f4 29.e4 f3 30.Rc5 fg2 31.Kg2 Be7 32.Nd5 Rc5 33.dc5 (33...Re6 34.Rc1 (< 34.Ne7 Re7 35.c6 bc6 36.bc6 Rc7+-) 34...Re4 35.c6+-; 33.Ne7?! Rb5 34.d5 Kg5+/-) 1–0. Wall,Bill – Ventilator, internet, 2004.

6.Be5 d5 7.Bb2 Bd6 8.Nc3 0-0 9.h4 (better 9.Nf3!?=) 9...d4-/+ 10.Nce2 de3 11.de3 Qe7 12.Nd4 Ne3! 13.fe3 Bg3 14.Ke2 Bg4 15.Ngf3 Rfe8 16.Qd3 Nd5 Attacks the isolani on e3 (better 16...Ne4 17.Rh3 Bf4-/+) 17.Kd2+/- Ne3 18.Ng5 (18.Kc1 Rad8 19.Kb1 a6+/-) 18...Bf5 (better 18...g6!?=+) 19.Nf5+= Nf5 20.Kc1?? (better 20.Kc3 Qc5 21.Qc4 Re3 22.Bd3 Be5 23.Kb3 Qc4 24.Kc4 Bb2 25.Bf5 Ba1 26.Ra1+=) 20...Qe1-+ 21.Qd1 Bf4 22.Kb1 Qd1 23.Ka2 Qd5 24.c4 Qc5 25.Bd3 Rad8 26.Rad1 Rd3! 27.Rd3 Qc4 28.Rb3 Re2 (28...Re3 29.Kb1 Qb3 30.Nf3 Re2 31.Nd2 Rd2 32.Re1 Qb2) 29.Rd1 Nd4 (29...Rb2 30.Ka1 Rd2 31.Rd2 Bd2 32.Rb1 Bc3 33.Rb2 Qb5 34.Nf7 Qb2) 30.Kb1 Qb3 31.Rd4 (31.Rd2 Rd2 32.Nf7 Qb2) 31…Qb2 0-1. is_er_nog_hoop (2515) - tamik (2505), Rated Blitz game, lichess.org, 2016.

6.Be5 d5 7.Nf3 Bd6 8.Bd6 Qd6 9.c4 0-0 10.cd5 Nd5 11.Be2 Re8 12.0-0 Qf6 13.d4 (13.Ra2 Bd7+=) 13...Nfe3 14.fe3 Ne3 15.Qd2 Nf1 16.Bf1 Bg4 17.Be2 (17.Ne5 Bh5 18.Qc3 Rad8+=) 17...Rad8 (17...Re2!? 18.Qe2 Bf3-/+) 18.Nc3= Bf3 19.Bf3 Rd4 20.Qf2 (20.Re1 Re6 (20...Rd2?? 21.Re8) 21.Qf2 Re1 22.Qe1 Rd8=) 20...Rc4 (20...Rd3 21.Re1 Re1 22.Qe1-/+) 21.Re1 Re1 22.Qe1 g6 23.Ne4 (23.Ne2 Qe5-/+) 23...Qd4 24.Nf2 b6 (24...Qc5 25.a4-/+) 25.h3 (25.Kf1 Qc5 26.Qe8 Kg7=+) 25...h5 (25...Qc5 26.Kh2 Qb5 27.Ng4-/+) 26.Kh2 (26.Bc6 Rc3 27.a4 Ra3-/+) 26...Qf4 (26...Qd6 27.Kh1=+) 27.Kh1= Rc1 28.Bd1 (better 28.Nd1=) 28...Kh7?? (28...Qg3 29.a4=+) 29.Kg1?? (29.Nd3 Rd1 30.Qd1+/- (30.Nf4?? Re1 31.Kh2 Re5-+)) 29...Qd4 30.Qe2 Qc5 31.Qf3 Kg7 32.a4 Qd4 33.Kh2 (33.Qe2 c6=+) 33...Qe5 (33...Rc3 34.Qe2 Re3-+) 34.Qg3 Qg3 35.Kg3 c6 36.bc6 Rc6 37.Be2 (37.Kf4 Rc4 38.Ke5 f5-/+) 37...Rc3-/+ 38.Kf4 Ra3 (38...g5 39.Ke4-/+) 39.Bb5 a6 40.Bd7 (40.Bc6!?-/+) 40...Ra2 (40...Rc3 41.Ke5 Rc5 42.Kd6-+) 41.Kf3 (41.Ke3 Rc2 42.h4 Kf6-+) 41...Rd2 (41...Rc2 42.h4-+) 42.Be8? (42.Bc8 b5 43.ab5 ab5-/+) 42...Kf8 (42...Rc2!? 43.a5 b5 44.Ne4-+) 43.Bc6-/+ Rd6 (43...Rd4 44.a5 Rc4 45.Bb7 ba5 46.Bd5 Rc3 47.Ke2 Rc2 48.Ke3-+) 44.Bb7 Ke7 (better 44...b5!? 45.Ne4 Rd3 46.Ke2 Ra3 47.ab5 ab5-/+) 45.Ba6+= Rd4 46.Bb5 f5 47.Nd3 g5 48.Ke3 Rd5 (48...Re4 49.Kd2+=) 49.Nf2 Kf6 50.g3 Rc5 51.Nd3 Rc3 52.Kd2 Ra3 53.Be8 h4 54.gh4 gh4 55.Nf4 (55.Bb5 Ra2 56.Ke3 Kg5+=) 55...Kg5 56.Nd3 Ra2 57.Kc3?? (better 57.Ke3=) 57...Rh2-/+ 58.Bc6 Rh3 59.Kc4 (59.Kd4 Rg3-+) 59...Rg3 (59...Re3 60.Kd4 f4 61.Ne5-+) 60.Nf2 h3 (60...Kf4 61.Nd3 Ke3 62.Nb4-+) 61.Kb5-/+ h2 62.Nh1? (better 62.Kb6 Rb3 63.Kc7-/+) 62...Rb3-+ 63.Kc4 Rb1 64.Kd5 (64.Kd3-+) 64...f4 (better 64...Rh1 65.Kd4 Re1-+) 65.Ke5 Kg4 (better 65...Rf1 66.Bb7 f3-+) 66.Bf3 (66.Nf2 Kg3 67.Ne4 Kh4 68.Nd2-+) 66...Kf3 67.Ng3 Rh1! (67...Rh1 68.Nh1 Kg2 69.Kf4 Kh1-+) 0-1. carlos78 (2300) - tamik (2235), Rated Blitz game, lichess.org, 2015.

6.Be5 Ne4 7.Nf3 d5 8.d3 Nc5 9.Be2 Rb8 10.Nbd2 Bd6 11.Bd6 Qd6 12.0-0 0-0 13.c4 Be6 (better is 13...Re8+-) 14.cd5 Qd5 15.e4 Qd6 16.ef5 Bf5 17.Nb3 (better is 17.d4 Ne6 18.Qa4+-) 17...Nd3 (17...Bd3 18.Nc5 Be2 19.Qe2 Qc5 20.Rfe1+-) 18.Bd3 (better is 18.Nbd4 Nf2 A) 19.Nf5?! Nd1 (19...Qd1?? 20.Bd1 Nd3 21.Bc2+-) 20.Nd6 Nc3+-; B) 19.Rf2+-) 18...Bd3 19.Re1 Bb5 20.Qd6 cd6 21.Nbd4 Bc4 22.Nd2 Bd5 (22...d5 23.Rab1+-) 23.Ne4 (23.Nf5 Bc6+-) 23...Rbd8 24.Nc3 Bc4 25.Rac1 (25.Re7 Rb8+-) 25...Rfe8 26.Re8 Re8 27.f3 d5 28.Kf2 Kh8 29.Re1 Re1+/- 30.Ke1 a6 31.Nf5 b5 32.Nd6 d4 33.Nb1 Bd5 34.Nd2 f6 35.Nf5 d3 36.Kf2 a5 37.Ke3 g6 38.Nd4 Bc4 39.Nc4 bc4 40.Kd2 Kg7 41.Nb5 h5 42.Nc3 f5 43.Nd1 Kf6 44.Ne3 c3 45.Kc3 f4 46.Nc4 d2 47.Kd2 a4 48.Nb2 Ke5 49.Na4 Kd4 50.Nc3 g5 51.a4 h4 52.a5 Kc5 53.Kd3 Kc6 54.Kd4 Kb7 55.Kc5 Ka6 56.Kb4 Kb7 57.Kb5 Kc7 58.a6 Kb8 59.Kb6 Ka8 60.Nd5 h3 61.gh3 Kb8 62.Nf6 Ka8 63.Ne4 Kb8 64.Ng5 Kc8 65.h4 Kb8 66.h5 Ka8 67.h6 Kb8 68.h7 Kc8 69.Ne6 Kd7 70.h8Q Ke6 71.a7 Kf5 72.a8Q Kg6 73.Qag8 Kf5 74.Qh5 Kf6 75.Qgf7 (75.Qhg5) 1–0. Fournier,Frederic – COMP Crafty level 1, Casual game (blitz), 2011.

6.Be5 Qe7 7.Bc7 b6 8.Bf4 g6 9.d4 Ne4 10.Nf3 Bb7 11.Bd3 Qe6 12.0-0 Nfd6 13.Nbd2 (13.Nfd2 Bg7+-) 13...Nc3 14.Qc1 Ncb5? (14...a5+-) 15.Qb2 Nc7 (15...Bf3 16.gf3 Nd4 17.ed4 Qf6 18.Rae1 Be7+-) 16.d5! Bd5 (16...Qd5 17.Qh8) 17.Qh8 0-0-0 18.Qh7 f5 19.c4 Nc4 (19...Bb7+-) 20.Bc4 Bc4 21.Nc4 Qc4 (21...Nd5 22.Nd4 Qe8 23.Bg5+-) 22.Rfc1 1–0. Klaus Behrmann (2250) – brain50, ChessWorld.net, 2002.

6.Be5 Be7 7.Nf3 0-0 8.Be2 d6 9.Bb2 c5 10.c4 d5 11.d3 (11.cd5 Qd5 12.Nc3 Qe6+/-) 11...d4 12.ed4 Nd4 13.Nd4 cd4 14.0-0 b6 (14...a6!?+/-) 15.Nd2 Bb7 16.Bf3 Rb8 17.Bb7 Rb7 18.Nf3 h5 (18...Bc5 19.Re1+-) 19.Bd4 (19.Nd4 Ng4 20.Qf3 Rd7+-) 19...h4 (19...Rd7 20.Re1+-) 20.h3 (20.Qe2 Bc5 21.Be3 Re8 22.Nh4 Rd7+-) 20...Bc5 (20...Rd7 21.Qe1+-) 21.Bc5 bc5 22.Qc2 1–0. Fournier,Frederic (1665) – Alexandr_L (2115), ChessOK.com, 2012.

6.Be5 Be7 7.Nf3 d6 8.Bb2 0-0 9.Be2 Be6 10.c4 c6 11.Nc3 Qb6 12.a4 1–0. Fournier,Frederic – trolukov, Active, 2012.

7.d4 Bb6 8.Bc4 d6 9.Bf6 Qf6 10.Qf3 0-0 (10...Qe7 11.c3+/-) 11.Ne2 Rb8 (11...Qe7 12.0-0+/-) 12.Nbc3 (12.g4 Nh4 13.Qf6 gf6+-) 12...Be6 (12...Re8 13.0-0+/-) 13.Bd5 Bd5?? (better is 13...a6+-) 14.Nd5 (14.Qd5?! Ba5+/-) 14...Qe6 15.Qf5!! (15.Nb6?! ab6 16.0-0 Nh4+/-) 15...Qe8 (15...Qf5 Theme: Deflection from e7 16.Ne7 A double attack) 16.0-0 c6 17.Nb6 ab6 18.Ng3 c5 19.c4 cd4 (19...cd4 20.ed4 Qe6 21.Qe6 fe6+-; 19...Qe6 20.d5 Qf5 21.Nf5+-). Ventimiglia,Charles – Puckett,James, IECG, 1998.

7.Nf3 d6 8.Bb2 0-0 9.d4 Bb6 10.Bd3 c5 11.bc6 bc6 12.0-0 Nd5 13.e4 Nf4? (better is 13...Nfe3 14.fe3 Ne3+-) 14.ef5 Nd3 15.Qd3 d5 16.Nbd2 Qf6 17.c4 Bf5 18.Qc3 h5 19.cd5 cd5 20.Rfe1 h4 21.Rac1 h3 22.Qc6 Be6 23.Nf1 hg2 24.Ng3?? Qf3–/+ 25.Re3 Qg4 26.Kg2 Bd4 27.Bd4 Qd4 28.Rcc3? Rac8–+ (28...Rac8 29.Re6 Qc3 30.Qc3 Rc3–+) 0–1. Fournier,Frederic (1915) – Prunus (1805), Active, 2011.

7.Nf3 d6 8.Bb2 0-0 9.d4 Bb6 10.Bd3 Re8 11.0-0 Ne4 12.Nbd2 d5 13.c4 c6 14.bc6 bc6 15.cd5 cd5 16.Ne5 (16.Qc2 Bb7+/-) 16...f6 (16...Re5 17.de5 Ne3 18.fe3 Be3 19.Kh1 Nd2 20.Re1+/-) 17.Ne4 fe5 18.Ng3 (18.Nc5 Rb8 19.Bf5 Bf5+/-) 18...e4 19.Bb5 Bd7 (19...Ng3 20.fg3 Bd7 21.a4+=) 20.a4 (20.Bd7 Qd7 21.Qg4 g6+/-) 20...Ng3+= 21.hg3 Bb5 22.ab5 Re6 23.Qb3 Qg5 24.Rac1 Rf8 25.Rc6 Rff6 (25...Rc6 26.bc6 Bc7 27.Ra1+=) 26.Re6 Re6 27.Rc1 Qh5 (27...Qd8 28.Ba3+/-) 28.Rc6 (28.Rc6 Rc6 29.bc6+/-) 1-0. black_bishop_88 (2520) - juancruzariasTDF (2405), 1st CL WorldCup Semifinal, lichess.org, 2020. (=1.a3 e5 2.b4 Nc6 3.Bb2 Nf6 4.b5 Nd4 5.e3 Nf5)

7.Nf3 d6 8.Bb2 0-0 9.h3 b6?? (better 9...d5+=) 10.d4+- Bd4 11.Nd4 Nh4 (11...Bd7 12.Nf5 Bf5 13.Qf3 Bc2 14.Bf6 Qf6 15.Qf6 gf6 16.Nc3+-) 12.Nc6 Qd7 13.Bf6 gf6 14.Nc3 Bb7 15.Nd5 Bc6 (15...Kg7 16.Qd4 Qf5 17.Nc7 Bc6 18.Na8 Be4 19.Nb6 ab6+-) 16.Nf6 Kh8 17.Nd7 Bd7 18.Qd4 f6 19.Qg4 (better 19.Qh4 Rae8 20.Qc4+-) 19...Ng6?? (19...Bg4 20.hg4 Ng6+-) 20.Qd7 (20.Qd7 Rac8 21.Bd3+-) 1–0. Pereira – t1643, internet, 2020.

7.g4 d6 8.Bb2 Nh4 +/-.

7.Bb2 Be6 8.Nf3 c5 9.c4 h6 (9...d5 10.cd5 Bd5 11.Bf6 Qf6 12.Nc3+/-) 10.Be2 Be7 11.0-0 (11.d3 Qa5 12.Qd2 Qb6+-) 11...0-0 12.d4 d5 13.cd5 Bd7? (13...Qd5 14.Nc3 Qd8 15.dc5 Bc5 16.Qc2+/-) 14.e4 (14.Nc3 cd4 15.Nd4 Bc5+-) 14...Nd4? (14...Ne4 15.Qc2 Nf6 16.dc5 Nd5+-) 15.Nd4 (15.Bd4 cd4 16.Qd4 Re8+-) 15...cd4 16.Qd4 b6? (16...Bd6 17.Nd2 Re8 18.Qd3+-) 17.Nd2 (better is 17.d6!? Bd6 18.Qd6 Ne4+-) 17...Bc5 18.Qc3 Rc8 19.Qg3 Qc7 20.Qc7 Rc7 21.Rac1 Rcc8 22.Kh1 Ng4 23.h3 Nf2+/- 24.Kh2 Be3 25.Rc8 Rc8 26.Bc1?? Bd2 27.Bd2+= Ne4 28.Bb4 Nc3 29.Bd3 Nd5–/+ 30.Rd1 Nb4 31.ab4 Be6 32.Bf1 Rc7 33.Rd8 Kh7 34.Bd3 g6 35.Rd4 Rd7 36.Rd7 Bd7 37.Kg3 Kg7 38.Kf4 Kf6 39.g4 g5 40.Ke3 Ke5 41.Bf1 f5 42.gf5 Bf5 43.Kd2 Kd4 44.Bg2 h5 45.Bf1 h4 46.Bg2 Be4 47.Bf1 Bf3 48.Bd3 g4 49.hg4 Bg4 50.Bf1 h3 51.Ke1 Kc3 52.Kf2 Kb4 53.Kg3 Bd7 54.Bh3 Bh3 (54...Bh3 55.Kf2 Kb5–+) 0–1. Fournier,Frederic (1755) – Zisin_Oleg (1615), ChessOK.com, 2012.

7.Bb2 Be7 8.Nf3 0-0 9.Nc3 d5 10.Bd3 Nd6 (10...c5 11.bc6 bc6 12.0-0+/-) 11.h3 c6 12.a4 c5 13.g4 (13.Ne5 Be6+=) 13...c4 (13...Be6 14.0-0+=) 14.Be2+= Nfe4 (14...Nde4!?+=) 15.Nd5+/- Be6 (15...Bh4!? 16.Nh4 Qh4+-) 16.Ne7+- Qe7 17.Nd4 (17.d3 cd3 18.cd3 Nc5+-) 17...c3 (17...Qh4!? 18.0-0 Rad8+=) 18.Bc3+- (18.dc3?! Qh4 19.0-0 Qh3+=) 18...Rac8 19.Bb4 Qf6? (better 19...Nf2 20.Kf2 Ne4 21.Kg2 Qb4+/-) 20.f4?? (better 20.0-0+-) 20...Ng3 (20...Qh4 21.Kf1 Qf2) 21.Kf2 (better 21.Bd6 Nh1 22.g5+-) 21...Nh1 (21...Nde4!? 22.Kg2 Nh1+/-) 22.Qh1+- Rfd8 23.h4 White intends g5 (better 23.g5 Qe7 24.f5+-) 23...Nc4?? (better 23...Qe7+-) 24.g5 Bd5 25.gf6 Bh1 26.Rh1 g6 27.h5 Nd6 (27...Nb6 28.hg6 hg6 29.Be7+-) 28.hg6 hg6 29.f5! Ne4 (29...Nf5 30.Nf5 Combination; 29...gf5 30.Bd3 Decoy) 30.Kf3 Nf6 31.fg6 (31.Be7 Nd7 32.Bd8 Rd8 33.fg6 Ne5 34.Kg3 fg6+-) 31...fg6 (31...Nd5 32.Ba3 fg6 33.c4+-) 32.Rg1 (32.Be7 Kf7 33.Bd8 Rd8+-) 32...Kh7 (32...Kf7+-) 33.Bd3 Rg8 34.Ne6 Nh5 35.Rh1 Kh6 36.Be7 g5 (36...Rge8 37.Bg5 Kh7 38.Rh5 Kg8 39.Bg6 Re6 40.Bh7 Kg7+-) 37.Kg4 Rce8 (37...Rc4 38.Bc4 Kg6 39.Rh5 Kf7 40.Rh7 Ke8 41.Bf6 Rg7 42.Rg7 a6 43.Re7) 38.Bg5 (38.Rh5) 38...Rg5+- 39.Ng5 Rg8 40.Rh5 (40.Rh5 Kg7 41.Rh7 Kf8 42.Kf5 b6 43.Ne6 Ke8 44.Ke5 Rg4 45.Kf6 Rg7 46.Rg7 a6 47.Re7) 1-0. allyouneedisluft (2525) - PetarBosnjak (2515), Rated Bullet game, lichess.org, 2017. (=1.a3 e5 2.b4 Nc6 3.Bb2 Nf6 4.b5 Nd4 5.e3 Nf5)

7.Bb2 Be7 8.Nf3 0-0 9.c4 c6 10.a4 cb5 11.cb5 Qc7 12.Nc3 Be6 13.Be2 Rfe8 14.0-0 d5 15.Rc1 Qb8 16.d3 a6 17.ba6 ba6 18.d4?? (better is 18.Qd2+/-) 18...Qb2–+ 19.Rc2 Qb3 20.Qd3 Ne4! 21.Rb1 (21.Ne4 Qd3 Double attack (21...Qa4 Deflection; 21...Qd3 Decoy)) 21...Qc4?? (better is 21...Qa3!?–+) 22.Ne4?? (better is 22.Qc4 dc4 23.Ne4+/-) 22...Qd3–/+ 23.Bd3 de4 24.Be4 a5?? 25.Ba8+- Ra8 26.e4 Nh6 27.d5 Bd7? 28.Rc7 Ba4 29.Re7 Bc2 30.Rc1 Rb8 31.Ne1 Be4 32.Re4 f5 33.Rd4 Ra8 34.d6 Nf7 35.d7 a4 36.Ra1 a3 37.Nc2 a2 38.Nb4 Kf8 39.Nc6 g6 40.d8Q Nd8 41.Rd8 Rd8 42.Nd8 1–0. Fournier,Frederic (1905) – yoyo22, Active, 2011.

7.Bb2 Be7 8.Nf3 0-0 9.Be2 a6 10.a4 c6 11.c4 Bd7 12.Nc3 d5 13.cd5 cd5 14.0-0 Qb6 15.Qb3 Qc5 (15...Be6!? 16.d4 ab5 17.ab5 Rfc8+/-) 16.Ba3 Qb6 17.Nd5 Qe6?? (better is 17...Nd5 18.Qd5 Be6+-) 18.Ne7 Ne7 19.Qe6 Be6 (19...fe6 20.Be7 Rfc8 21.Rfc1+-) 20.Be7 ab5 (20...Rfc8 21.ba6 ba6 22.Bf6 gf6 23.Rfb1+-) 21.Bf8 Kf8 22.ab5 Ra1 23.Ra1 g6 (23...Ne8 24.Nd4 Ke7 25.Ne6 Ke6 26.b6+-) 24.Ra7 Bd5 25.d3 Kg7 (25...b6 26.Ne5+-) 26.e4 Be6 27.Rb7 h5 28.Nd4 Bg4 29.Bg4 Ng4 30.Rc7 Ne5 31.b6 Nd3 32.b7 Kh6 33.h4 g5 34.Rc6 Kg7 35.hg5 Nf4 36.b8Q Nd5 37.Nf5 Kh7 38.Rh6# 1–0. Fournier,Frederic (1875) – Kesteman,Bruno, FRA Ch (Team) PIC3 Senlis–Soissons, 2012.

7.Bb2 Be7 8.g4 Nh6?? (better 8...Nh4 9.g5 Ne4+=) 9.g5+- Ne4 10.gh6 Bh4 11.Qf3?? (better 11.hg7 Rg8 12.Qh5+-) 11...f5?? (better 11...Nf2 12.Bc4 Qe7+/-) 12.hg7+- Rg8 (12...Bf2 13.Qf2 Rg8 14.Qf4+-) 13.Qh5 Kd7 (13...Ke7 14.Qh4 Kf7 15.Qh7+-) 14.Qf5 Ke8 15.Qe4 (better 15.Qh5 Ke7 16.Qh4 Kd7 17.Bh3 Ke8 18.Qh7 Kf7 19.Qe4 Rg7 20.Bc8 Qc8 21.Qf4 Kg8 22.Bg7 Qd7+-) 15...Qe7 16.Qh7 Bf6 17.Qg8 Kd7 18.Bh3 (18.Bh3 Qe6 19.Qe6 Kd8 20.g8Q) 1-0. FeegLood (2835) - BOMBARDOO (1760), lichess.org, 2015.

7.Bc3 Be6 8.Nf3 Ne4 9.Bb2 Qe7 10.Be2 b6 11.0-0 Nh4 12.d3 Nf3?? 13.Bf3 (13...a6 14.c4+-) 1–0. Wall,Bill – Beena, internet, 2004.

7.Bc3 Be7 8.g4 Nh4 9.h3 0-0 10.Nf3 Ne4 11.d4 Nf3 12.Qf3 f5 13.Bb4 d5 14.Be7 Qe7 15.g5 Qg5 16.c4 f4 17.cd5 Nf2 18.Qf2 fe3 19.Qg2 Qh4 20.Ke2 Rf2 21.Ke3 Rg2 22.Bg2 Qg3 23.Bf3 Bf5 24.Rd1 Re8 0–1. marekt – ayron, gameknot.com, 2001.

7.Bf6 Qf6 8.Nc3 +=.

5.e3 Ng6 6.Ne2 Bd6 7.d3 0-0 8.e4 a6 9.Nbc3 c6 10.ba6 ba6 11.a4 a5 12.Ba3 Ne8 (12...Bb4 13.h4–/+) 13.g3 Qe7 14.Bd6 Nd6 15.Bh3 Rb8 16.Rb1 Rb1 17.Qb1 Nb7 18.Qb3 Nc5 19.Qb6 d6 20.Bc8 Rc8 21.Qa5 Qd8?? (better is 21...Qb7 22.Nd1 Ra8+=) 22.Qd8+/- Rd8 23.0-0 Ra8 24.Ra1 Nd7 25.Nc1 h6 26.Nb3 Ne7 27.a5 Nc5 28.Nc5 dc5 29.f4 ef4 30.gf4 f5 31.Kf2 fe4 32.de4 Kh7 33.f5 g6 34.f6 Nc8 35.e5 Kg8 36.Ke3 Kf7 37.Kd3 Ke6 38.Kc4 Nd6?? 39.ed6 Kd6 40.Ne4 Ke6 41.Kc5 Kd7 42.Nd6 Ke6 43.f7 Ke7 44.a6 g5 45.a7 g4 46.Re1 Kf8 47.Kc6 h5 48.Kb7 Rd8 49.Re8 Re8 50.fe8Q Kg7 51.Qh5 Kg8 52.Qg4 (52.Qg4 Kf8 53.Qd7 Kg8 54.a8Q; 52.a8Q Kg7 53.Qah8) 1–0. Karczmarewicz,Wojciech – Kaminski,Maciej, Warszawa ch IX op B Poland, 2007.

5.Be5 d5 6.Bb2 (6.Bf6 gf6 7.Nf3 Rg8+/-) 6...c5 (6...Ng6 7.Bd4+=) 7.bc6 Nc6 8.e3 Bf5 9.Nf3 Bd6 10.Bb5 Qd7 (10...0-0 11.0-0+=) 11.0-0 a6 12.Ba4 b5 13.Bb3 0-0 (better is 13...Be7+/-) 14.d4 (better is 14.Bf6 gf6 15.Nc3+/-) 14...Na5= 15.Nbd2 Nb3 16.cb3 a5 17.Qe2 Qc7 (17...Rfc8 18.Ne5 Qe6 19.Rfc1+=) 18.Rfc1 Qb8 19.h3 Re8 20.Rc2?? (20.Ne5 Qb7+=) 20...a4 (better is 20...Bc2 21.Rc1 Rc8–+) 21.Rc3 ab3 (21...b4 22.Rcc1=) 22.Nb3 (22.Rb3 b4 23.ab4 Ra1 24.Ba1 Rc8+/-) 22...Ba3 (22...Ne4!? 23.Rcc1 Qb6+=) 23.Ba3 b4 24.Bb4 Ra1 25.Na1 (25.Na1 Qb4 26.Rc1+/-) 1–0. Fournier,Frederic – raoulvolfoni, Active, 2007.

5.Be5 Ned5 6.Nf3 d6 7.Bb2 g6 8.e3 Bg7 9.d4 0-0 10.c4 Nb6 11.Nbd2 Bf5 12.Be2 Qe7 13.0-0 d5 14.c5 Nbd7 15.a4 a6 (15...Rfe8!?+/-) 16.ba6 ba6 17.Rb1?? (17.c6!? Nb8 18.Ba3+-) 17...a5 (17...Rfb8 18.a5+=) 18.Bc3 (18.Rc1 Rfb8 19.Bc3 Ra7+/-) 18...c6?? (better is 18...Bb1!? 19.Qb1 Rfb8=) 19.Rb2 Ne4+= 20.Ne4 Be4 21.Nd2 Nf6? 22.Bf3 Bf3 23.Nf3 Ne4 24.Bd2 Rfb8 25.Qc2 Rb2 26.Qb2 Qc7 27.Rb1 Nd2? 28.Qd2 Bh6 29.Ne5 f6 30.Nf3 f5 31.Ne5 f4 32.Rb6 Rb8? 33.Qb2 Rb6 34.Qb6 Qe7 35.Qc6 fe3 36.Qd5 Kg7 37.Qd7 Qd7–+ 38.Nd7 e2 39.g3 e1Q 40.Kg2 Bd2 41.Ne5 Qe4 42.Kh3 Qd4 (42...Qd4 43.f4 Bf4 44.gf4 Qf4 45.c6 Qe5 46.c7 Qc7 47.Kg2 Qc2 48.Kg3 Qe2 49.Kf4 Qh2 50.Ke3 g5 51.Kf3 Qf4 52.Ke2 g4 53.Kd1 g3 54.Kc2 Qa4 55.Kb1 g2 56.Kb2 g1Q 57.Kc3 Qgd4) 0–1. Fournier,Frederic – antropodo3, Active, 2008.

5.Be5 d6 6.Bb2 (6.Bf6 gf6 7.Nf3 f5+/-) 6...Bg4 7.h3 Bf5 8.e3 g6?? (better is 8...Ne4+/-) 9.Bf6+- Bg7 (9...Rg8+-) 10.Bg7 Rg8 11.Bf6 Qd7 12.Nf3 0-0-0 13.Be7 Qe7 14.Nc3 c6 15.bc6 bc6 16.Ba6 Kb8 17.Rb1 Kc7 18.Rb7 (18.Rb7 Kc8 19.Re7 Kb8 20.Qb1 Ka8 21.Qb7) 1–0. Fournier,Frederic – Omscity (2015), Active, 2007.

5.Be5 Ng6 6.Bd4 +=.

5.Nc3 d4 6.Ne4 Ne4 7.de4 Be6 8.e3 Qe7 (8...de3 9.Qd8 Rd8 10.fe3–/+) 9.Nf3 (9.b5 de3 10.bc6 ef2 11.Kf2 Qh4 12.g3 Bc5 13.Kg2 Qe4 14.Nf3 f6+=) 9...0-0-0 (better is 9...de3!? 10.fe3 a6–/+) 10.ed4= ed4 11.Nd4 (11.b5 Na5 12.Nd4 Bd5 13.Qg4 Kb8+/-) 11...Nd4 12.Bd4 Qg5 13.c3 Bg4 14.f3 Bh5 15.Qa4 a6 16.b5 ab5 (16...Bc5 17.ba6 Bd4 18.ab7 (18.cd4?! Qe3 19.Be2 Qc3 20.Kf2 Qd4 21.Qd4 Rd4+-) 18...Kb7 19.Ba6 (19.cd4?! Qe3 20.Be2 Qc3 21.Kf2 Qd4 22.Qd4 Rd4+-) 19...Kb8 20.cd4+-) 17.Bb5 (17.Qa8 Kd7 18.Qb7 Bd6 19.Qb5 Qb5 20.Bb5 c6+-) 17...c6? (17...c5 18.Qa8 Kc7 19.Qa5 Kc8+-) 18.Bb6 (better is 18.Bc6 Kc7 19.Bb7 Rd4 20.Qc6 (20.Qd4?! Bc5 21.Qd3 Kb7+-) 20...Kd8 21.Qb6 Kd7 22.Qd4 Kc7 23.e5+-) 18...Qg2?? (better is 18...cb5 19.Qa8 Kd7 20.Qb7 Ke6 21.Bd8 Qe3 22.Kf1 Qd3 23.Kf2 Bc5 24.Kg3 Qd8 25.Qb5 Qg5 26.Kh3 Rd8+=) 19.Qa8 Kd7 20.Qd8 Ke6 21.Bc4 Ke5 22.Qd4 Kf4 23.Qe3 Ke5 24.Rg1 Qh2 25.Qg5 Kd6 26.0-0-0 Qd2 27.Rd2# 1–0. Gouliaros Antoniadis,A – Konstantopoulos,D, GRE–ch U10 Greece, 2002.

5.Nf3= Bd6 6.b5 e4 7.de4 de4 8.bc6 ef3 9.cb7 Bb7 10.gf3 =.

5.Nf3= Bd6 6.e3 b6 7.Nbd2 Bg4 8.h3 Be6 9.b5+= e4? 10.bc6 ef3+/- 11.Nf3 h6 12.Nd4+/- Be5?? 13.Ne6+- fe6 14.Be5 0-0 15.Qc1 a5 16.c4 Ra7 17.Qc3 Qa8 18.cd5 ed5 19.Bf6 Rf6 20.Rc1 b5 21.Qd4 Rd6 22.Rc5 Ra6 23.Rd5 Qc6 24.Rd6 cd6 25.Qb2 a4 26.d4 Rb6 27.f3 Kh8 28.e4 Kg8 29.Bd3 Kh8 30.Ke2 d5 31.Rc1 Qb7 32.Rc5 b4 33.Rd5 ba3 34.Rd8 Kh7 35.e5 g6 36.Qa3 Rb2 37.Ke3 Rb4 38.e6 Qe7 39.Rd7 (39...Kg8 40.Re7 Rb8 41.d5 Rf8 42.Qc3 Rf3 43.gf3 g5 44.Qc8#) 1–0. Hansen,Staale – Hansen,Knut Are, NOR Club–ch Norway, 1996.

5.Nf3= Bd6 6.e3 e4 7.de4 de4 8.Nd4 =+.

5.Nf3 Bd6 6.e3 Bg4 7.h3 Bf3 8.Qf3 e4 9.Qf5+= Qd7 10.Qg5 0-0-0 11.Qg7 ed3? 12.Qf6 dc2 13.Nd2 Rhe8 14.Bd3 Ne5 15.Bc2 Re6 16.Qg7 Nc4 17.Nc4 dc4 18.0-0-0 Qc6 19.Bf5 c3 20.Qf7 cb2 21.Kb1 Qg2 22.Rhg1 Qe4 23.Be4 Re4 24.Rd6! (24...b6 25.Rd8 Kb7 26.b5 Rd4 27.Qf3 Rd5 28.Qd5 c6 29.Qc6#) 1–0. Trkn – guest7392, ICC, 2004.

5.Nf3 e4 6.de4 de4 7.Qd8 Nd8 =.

5.h3 Bd6 6.Nf3 +=.

5.h3 Be7 6.e3+= a6 7.Nf3 Bd7 (7...d4 8.c4+=) 8.Be2 (8.Ne5 Ne5 9.Be5 a5+=) 8...0-0 (8...e4 9.Ne5=) 9.0-0 (9.Ne5 Ne5 10.Be5 a5+=) 9...b6 (9...e4 10.Ne5=) 10.Nbd2 (10.Ne5 Ne5 11.Be5 Re8+/-) 10...h6 (10...Bd6 11.c4=) 11.Nb3 (better is 11.Ne5!? Ne5 12.Be5+/-) 11...e4 12.de4 de4 13.Ne5 Ne5 14.Be5 Qc8 15.Bf6 (15.Qe1!?=) 15...Bf6+= (worse is 15...gf6 16.Bc4 f5 17.Qh5+=) 16.Bg4? (better is 16.Rb1+=) 16...Bg4–+ 17.hg4 Ba1 18.Qa1 Qg4 19.Qc3 c5 20.bc5 bc5 21.Qc5 Qc8 22.Qc8 Rfc8 23.Nd4 Rc3 24.Ra1 f5 25.a4 g5 26.Ra2 f4–+ 27.Ne2 Rc4 28.ef4 gf4 29.Nf4 Rac8 30.Nd5 Kf7 31.Ne3–/+ Rd4 32.a5 Rd2 33.Kf1 Rb8 34.Ra4?? Rb1 (34...Rb1 35.Nd1 Rbd1#) 0–1. Torvik,D – Roland,Jeffrey, Detroit Motor City op, 1985.

5.b5 Na7 6.Be5 Bc5 7.d4 d6 8.Bf4 Bb6 9.Nf3 a4 10.c4 Ba5 11.Nbd2 0-0 12.Bd3 Qe8 13.0-0 c6? (better is 13...d5 14.Qc2 dc4 15.Qc4 Bd7+-) 14.Bd6 cb5 15.Bf8 Kf8 16.cb5 Nd5 (16...Bd7 17.Qa4 Nb5 18.Qb3+-) 17.Qa4 b6 18.Qb3 Bb7 19.Nc4 Rd8 (19...Nb5 20.Rfc1+-) 20.Na5 ba5 21.Rfc1 Nf4 22.ef4 Bd5 23.Bc4 Bc4 24.Qc4 h6 25.Qc5 Qe7 26.Qe7 Ke7 27.Ne5 Kf8 28.Nc6 Nc6 29.bc6 Rc8 30.d5 g5 31.d6 gf4 32.d7 Ra8 33.c7 f3 34.d8Q Rd8 35.cd8Q Kg7 36.Rc8 fg2 37.Qh8 Kg6 38.Rb1 a4 39.Rb5 f6 40.Qg8 1–0. Fournier,Frederic (2215) – Ouallet,Eric, Grand Prix Oise, 2001.

5.b5 Nb8 6.Be5 c6 7.bc6 bc6 8.Bb2 Bc5 9.d4 Bb6 10.c4 d6 11.f3 0-0 12.e4 d5 13.c5 Ba7 14.e5 Nfd7 15.g4 Qh4 16.Ke2 Ba6 17.Ke3 Qh6?? 18.f4 Qg6?? 19.Ba6 Na6 20.Bc1?? Qe4–+ 21.Kf2 Qh1 22.Kg3 (22.Qf3 Qh2 23.Qg2 Qh4 24.Kf1 Qe7–+) ½–½. Rempe,Torge – Foschepoth,David, Neumuenster Schleswig Holstein–ch U13, 1998.

5.b5 Na5 6.Bc3 c6 7.d3 d5 8.d4 Bd6 9.Qd2 b6 10.Ba5+= ba5 11.bc6 Qb6 12.Qc3 0-0 13.Nd2 Rb8 14.Ne2 Ba6 15.Rb1 Qc7 16.Nf4 Bf1 17.Rf1 Bf4 18.ef4 Rb1 19.Nb1 Rb8 20.Nd2 a4 21.g3 Rb6–/+ 22.Qa5?? Rb1!!–+ 23.Nb1 Qa5 24.c3 Qb6 25.Kd2 Qc6 26.Kc2 h5 27.h3 Qc4 (28.Nd2 Qd3 29.Kd1 Qc3–+) 0–1. nimmie – grimstad, ChessWorld.net, 2005.

5.Bc4 d5 6.Ba2 Be6 7.Ne2 Bd6 8.Nbc3 Be5 9.0-0 Bh2! 10.Kh2 Ng4 11.Kg3 Qg5 12.Ne4 Qg6?? 13.Nf4+- Qe4 14.f3 Qf5 15.fg4 Qg5 16.Qf3 Ne5 17.Ne6 fe6 18.Qf4 Qe7 19.Qe5 0-0-0 20.Qg7 Qe8 21.Be5 Rd7 22.Qh8 Qh8 23.Bh8 (23…Rd8 24.Bg7+-) 1–0. pierre – genghiskhan, internet, 2008.

5.Bc4 d5=+ 6.Ba2 Be7 7.d3 h6 8.Nc3 a6 9.de4+= de4 10.Qd8 Bd8 11.Nge2 0-0 12.Ng3 Be7 13.Nce4 Ne4 14.Ne4 Bf5 15.Bd5 Rad8 16.Rd1?? Bg4?? 17.f3+- Be6 18.Be6 fe6 19.Rd8 Rd8+/- 20.0-0 b5 21.Kf2 Rd2?? 22.Nd2+- g5 23.c4 bc4 24.Nc4 Kf7 25.Rc1 Nd8 26.Ne5 Kf6 27.Rc7 Bf8 28.Nc6 Kg6 29.Nd8 Bd6 30.Ra7 (30...e5 31.Ra6+-; 30.Rg7 Kh5 31.g4 Kh4 32.Rh7 Bf8 33.Ne6 Kh3 34.Nf8 Kh2 35.Rh6#) 1–0. babai – wemu, internet, 2007.

5.d3 d5 =.

5.Ne2 Nb4?? 6.Ng3?? (6.ab4 Bb4 7.Ng3 d5+-) 6...Nc2?? (better 6...Nc6=+) 7.Qc2+- d5 8.Qa4 (8.d3 ed3 9.Bd3 c5+-) 8...Bd7+/- 9.Qb3 Bd6 10.Nf5?? (better 10.Nc3 Be6 11.Rb1 Bg3 12.hg3+-) 10...Bf5-+ 11.Qd5?? (better 11.Nc3 Be7 12.Rb1-+) 11...Bh2 (better 11...Nd5 12.Bg7 Rg8-+) 12.Qe4?? (better 12.Qf5 Bd6 13.Bf6 Qf6 14.Qe4 Kd7 15.d4+-) 12…Ne4 (12...Ne4 13.Rh2 0-0-+) 0-1. DwarfMan (2650) - opperwezen (2695), Crazyhouse Madness, lichess.org, 2016. (=1.a3 Nf6 2.b4 Nc6 3.Bb2 e5)

5.Ne2 d5 6.Nf4 Be7 7.Be2=+.

5.b5 Nd4 6.Bd4 ed4 =.

5.d3 0-0 6.Nf3 d6 7.Nc3 Bg4 8.Nd5 Nd5=+ 9.ed5 Nd4 10.Be2 Ne2 11.Qe2 Qd7 12.h3=+ Bh5 13.g4? Bg6–+ 14.0-0-0 a5 15.d4 e4 16.Nd2 ab4 17.ab4 Bg5 18.h4 Bd2 19.Qd2 h6 20.g5? Rfe8?? 21.gh6+= gh6 22.Qh6+/- e3 23.fe3 Qf5 24.Rhg1?? Re3 25.Qe3 Kg7 26.Rh1 Kh7 27.Rdf1 Qh5 28.Kb1 1–0. guest690 – LittleJerry, ICS blitz, 2000.

5.d3 d5 6.Nd2 =+.

5.d4 ed4 6.Bd4 0-0=+ 7.e5 Nd4–/+ 8.Qd4 Ne8 9.Bd3=+ d5 10.ed6 Nd6–/+ 11.Nf3?? Bf6–+ 12.Qd5 Ba1 13.Ng5 Qe7 14.Be4 Ne4 15.Ne4 c6 16.Qd3 Re8 17.0-0 Bf5 18.f3 Rad8 19.Qc4 Bd4 20.Kh1 b5 21.Qc6 Be4 22.fe4 Qe4 23.Qc7 Qe1! 24.Qf7 Kh8 25.h4 Qh4 0–1. pauldopson – mwojo (1745), net–chess.com, 2003.

5.d4 d5 6.de5 Ne4 7.Bd3 =.

5.Nf3 Ne4 6.Bd3 d5 –/+.

5.c4 Be6 6.e3 Be7 7.Be2 0-0 8.d3 b6 9.0-0 Qd7 10.Nbd2 Rad8 11.Qc2 Rfe8 12.Rad1 d5? (12...a6 13.d4 ed4 14.b5+=) 13.cd5 (13.b5 Nb8+-) 13...Nd5 (13...Qd5 14.Rc1 Bd7 15.Ne1+/-) 14.Ne5 (14.Rc1!? Nb8 15.Ne5+-) 14...Ne5+/- 15.Be5 f6 16.Bg3 Bd6 17.Bd6 Qd6 (17...cd6 18.Bh5 Re7 19.Rc1+/-) 18.Nf3 Re7 19.d4 g6 20.Rc1 Bf5 21.Qc6 Rde8 (21...Qc6 22.Rc6 Be4 23.Rcc1+-) 22.Qd6 cd6 23.Bc4 Be6 24.Bd5 (24.Rc2!? a5+-) 24...Bd5+/- 25.Nd2 f5 26.Rc3 Rg7 27.Rfc1 h5 28.g3 g5 29.Rc8 Rge7 30.Re8 Re8 31.Rc7 a5 32.ba5 ba5 33.Ra7 h4? 34.Ra5 Be6 35.d5 Bd7 36.Nc4 hg3 37.hg3 Rf8 38.Nd6 f4 39.ef4 gf4 40.Ra7 Bg4 41.Re7 fg3 42.fg3 Bh3 43.Re8 Re8 44.Ne8 Kf8 45.Nc7 Ke7 46.Nb5 Bd7 47.a4 Kd8 48.d6 Kc8 49.g4! Bg4 50.Kf2 Bd7+/- 51.Ke3 Kb7?? 52.Kd4 Kb6 53.Kc4 Be6 54.Kb4 Bd7 55.a5 Ka6 56.Nc7 Kb7 57.Kc5 Ka7 58.Nd5 Ka6 59.Kb4 Bc6 60.Ne7 Bd7 61.Nd5 Bc6 62.Nc7 Kb7 63.Kc5 Bd7 ½–½. Fournier,Frederic (1840) – davds7 (1835), Active (5/1), 2005.

5.d3 d5 6.Ne5 (6.Nbd2 Bd6=) 6...Ne5 7.Be5 Bd6 8.Bb2 (8.Bd4 0-0=) 8...0-0 9.Nd2 Re8 10.g3 Be5 (better is 10...a5!?+=) 11.Be5+= Re5 12.Nf3 Re8 13.Bg2 c6 (13...Qe7 14.0-0+=) 14.0-0+/- Bg4 15.Re1 Bf3 16.Bf3 Rb8 17.c4 dc4 18.dc4 Qd1 (18...Ne4 19.Qc2 Ng5 20.Bg2+/-) 19.Rad1 Ne4 (19...g5 20.Rd4+/-) 20.Be4 (20.Rd4!? Ng5 21.Kg2 Re7+-) 20...Re4+/- 21.c5 h6 22.f3 (22.Kg2 a5 23.ba5 Ra4+/-) 22...Re3 23.Rd3 Rd3 24.ed3 Kf8 (24...Rd8 25.Rd1+/-) 25.g4 (better is 25.Kf2+/-) 25...Re8? (better is 25...Rd8 26.Rd1 Ke7+=) 26.Re8+- Ke8 27.Kf2 Ke7 28.Ke3 Ke6 29.Ke4 g6 30.f4 f5?? (30...Ke7+-) 31.gf5 gf5 32.Kd4 Kf6 33.a4 Kg6 34.Ke5 h5 35.Kd6 h4 36.Kc7 h3 37.Kb7 Kh5 38.Kc6 Kg4 39.Kd5 Kf3 40.c6 Kg2 41.c7 Kh2 42.c8Q Kg2 43.Qf5 h2 44.Qh5 h1B 45.Qh1! Kh1 46.f5 a5 47.b5 Kg2 48.f6 Kf3 49.f7 1–0. milatin – theghost221, gameknot.com, 2009. (=1.a3 e5 2.b4 Nf6 3.Bb2 Nc6 4.Nf3 d6)

5.d3 Be7 6.e4 0-0 7.Be2 Be6 8.Nbd2 a6 9.0-0 d5 (9...b5 10.Re1=) 10.Be5 (10.Ne5 Ne5 11.Be5 Bd6 12.Bd6 Qd6 13.ed5 Bd5+/-) 10...Ne5= 11.Ne5 de4 12.Ne4 Nd5 (12...Ne4!? 13.de4 Bf6=) 13.Qd2 Bf5 (13...a5 14.c3+=) 14.Ng3 Bf6 15.Nf5 Be5 16.Rab1 (better is 16.d4!? Nf4 17.Bg4+/-) 16...Qf6 17.Ng3 Bf4 18.Qe1 Rfe8 19.c4 (better is 19.Ne4 Qh6 20.h3=) 19...Bg3 (19...Nc3 20.Rb2 Qe5 21.Rc2 Bg3 22.Qc3 Bh2 23.Kh1 Qc3 24.Rc3 Re2 25.Kh2+=) 20.cd5 (better is 20.fg3!? Qb6 21.Rf2+=) 20...Be5 21.Qd2 Rad8 22.Bf3 Qh4 23.g3 Qd4 24.Rfe1 Qb6 25.Rbd1 (25.Rbc1 Bd4+=) 25...Qf6= 26.Qe2 Kf8 27.Be4 Bc3 28.Rf1 b6 29.Qf3 Qf3= 30.Bf3 a5 31.ba5+= Ba5 32.Rc1 b5 33.Rb1 Rb8 34.Rfc1 Re7 35.Rc5+- b4?? 36.Ra5 b3 37.Rc5 Ke8 38.Rc3 Re5 39.Rcb3 Rb3 40.Rb3 Re1 41.Kg2 (41.Kg2 Kd7 42.d4+-) 1–0. Vuong Quynh Huong – Dang Hai Yen, VIE–ch U11 Girls, 2005.

5.d4 e4 6.Nfd2 d5 7.f3 e3 8.Nb3 Nh5 9.Qd3 Qh4 10.g3 Ng3 11.Qe3 Be7 12.Kd2 Nh1 13.Nc5 0-0 14.Nc3 Bg5 15.f4 Bf4 16.Qf4 Qf4 0–1. Nautiluschess – Svidrigajlov, ICS blitz, 2001.

5.e3 e4 6.Nd4 =.

5.e3 Be7 6.c4 Bg4 (6...e4 7.b5=+) 7.Be2 (7.b5 Nb8=) 7...0-0 (7...e4 8.b5 ef3 9.gf3=+) 8.0-0 (8.b5 Nb8=) 8...h6 (8...e4 9.Ng5 Be2 10.Qe2=) 9.Nc3 (9.b5 Nb8=) 9...e4 10.Nd4 Bf5?? 11.Nf5+- Qd7 12.Bg4 Qd8 13.Nd5 Nd5 14.cd5 Ne5 15.Re1 Nd3 16.Bg7 Ne1 17.Bf8 Qf8 18.Qe1 Bf6 19.Rc1 Qd8 20.Nh6 Kf8 21.Bh5 Bb2 22.Nf7 Qe7 23.Rc2 Ba3 24.b5 Bb4 25.Qe2 Qf6 26.h3 c6 27.dc6 bc6 28.bc6 d5 29.c7 Rc8 30.Bg4 Bd6 31.Nd6 Qa1 32.Qf1 Qa4 33.Rc3 d4 34.Rc4 Qc4 35.Qc4 Rc7 36.Qc7 Kg8 37.Qf7 Kh8 38.Nf5 a5 39.Qg7# 1–0. Popkirov,Stojan – Kaczenski,Jan Torben, Schleswig Holstein–ch U11, 1997.

5.e3 Be7 6.Be2 0-0 =.

5.e3 Be7 6.Be2 Bf5 7.0-0 0-0 8.c4 Ne4 (8...e4 9.Nd4 Nd4 10.Bd4=) 9.d3 Ng5 10.Nbd2 Rb8 (10...Nf3 11.Nf3 Bf6 12.Nd2+=) 11.e4 Be6 12.Rc1 Nf3 13.Nf3 Bg5 14.Rc2 Qf6 15.Kh1 (15.d4 Nd4 16.Nd4 ed4 17.Qd4 Qd4 18.Bd4 Bf4+=) 15...Ne7 16.Ng5 Qg5 17.Bc1 Qf6 18.f4 Bd7 19.fe5 Qe5 20.Bf4 Qd4 21.Be3?? (21.Qd2 f5+/-) 21...Qe5?? (better is 21...Qe3 22.c5 dc5 23.Rc5 Rbc8–+) 22.Rf3?? (better is 22.Qa1+=) 22...Ba4–/+ 23.d4 Bc2 24.Qc2+= Qe6 25.Rg3 Ng6 26.Bg4+= Qe7 27.h3 Rfe8 28.Bf5 Qh4 29.Bf2 Qf6 30.Qe2?? c5! 31.dc5? dc5 32.Bc5 Qa1 33.Kh2+= b6 34.Bf2 Rbd8 35.Qc2 Rd1–+ 36.Rb3?? Rh1 37.Kg3 Rc1 38.Qb2 Qb2–+ 39.Rb2 Rc4 40.Be1 Rc1 41.Kf2 Ne5 42.Re2 Ra1 43.Re3 Nc4 44.Rg3 g6 45.h4 Na3 46.h5 Rd8 47.h6 Ra2 48.Kf3 Rd3 49.Kf4 Rg3 50.Kg3 gf5 51.ef5 Nc2 52.Bf2 Nb4 0–1. Le Nguyen Thanh,Tra – Phan Hoang Diem,My, VIE–ch U09 Girls, 1999.

5.e3 Bg4 6.Bc4 Be7 7.h3 Bh5 8.0-0 0-0 9.Be2 Bg6 10.c4 Qd7 11.d3 Nd8 12.Nbd2 Ne6 13.d4 ed4 14.ed4 Nd4 15.Bd4 h6 16.Re1 Nh7 17.Nb3 Qa4 18.c5 dc5 19.Bc5 Bc5 20.Nc5 Qd1 21.Rad1 b6 22.Nd3 Rfd8 23.Nh4 Bd3 24.Bd3 Ng5 25.Nf5 Re8 26.Ne7 Kh8 27.Nc6 Re1 28.Re1 a5 29.ba5 ba5 30.Ne5 Rd8 31.Bc2 Rd2 32.Bb3 c5 33.Nf7 Kg8 34.Ng5 Kf8 35.Ne6 Ke8 36.Nc5 Kd8 37.Nb7 Kc7 38.Na5 Rd3 39.Rc1 Kb6 40.Nc4 Ka6 41.Bc2 Rc3 42.Ne5 Ka5 43.Nf3 Ra3 44.Ne1 Rc3 45.Nd3 Kb5 46.Ne5 Kc5 47.Ng4 Kd4 48.Ne3 g5 49.Nf5 Ke5 50.Nh6 Kf6 51.Ng4 Kg7 52.Ne5 Ra3 53.Be4 Ra5 54.Nc4 Re5 55.Ne5 Kf6 56.Nd7 Ke7 57.Rc7 Kd6 58.Rc6 (time, 1–0). Nautiluschess – clifford, ICS blitz, 2001.

5.e3 Bg4 6.Be2 Qd7 7.0-0 Be7 8.c4 b6 (8...e4 9.Ne1=) 9.Nc3 Qe6 (9...e4 10.Ne1 Be2 11.Qe2+=) 10.Re1 0-0 11.d4 e4 12.Nd2 d5? (better is 12...Be2 13.Re2 Nd8+/-) 13.Bg4+- Qg4 14.Qg4 (14.Nd5?! Qg6+-) 14...Ng4 15.cd5 Nd8 16.Nce4 Re8 17.Rac1 Bd6 (17...a5 18.Rc7 ab4 19.d6+-) 18.Nd6 cd6 19.Nc4 Nb7 20.h3 Nf6 21.Nd2 Nd5 22.Nf3 (22.e4 Nf4 23.Rc7 Rab8+-) 22...Rac8 23.Rc8 Rc8 24.Rc1 Rc1 25.Bc1 h6 26.Bb2 Kf8 27.Nd2 Ke7 28.Ne4 (28.e4!? Nf4 29.d5+-) 28...f5 29.Nc3 Ke6 30.Kf1 Nc3 31.Bc3 Kd5 32.Ke2 g5 33.Kd3+- Nd8 34.f3 Ne6?? 35.g4 f4?? 36.e4 (36.e4 Kc6 37.d5 Kd7 38.de6 Ke6 39.Bg7+-) 1–0. Fournier,Frederic – latouriste, Active (5/0), 2005.

5.e3 Bg4 6.Be2 Be7 7.0-0 0-0 8.h3 Bh5 9.d4 Ne4 10.de5 de5 11.Ne5 Qd1 12.Rd1 Be2 13.Re1 Bh5 14.Nc6 bc6 15.c4 Bf6 16.Bf6 Nf6 17.g4 Bg6 18.Nd2 Rad8 19.Nf3 Be4 20.Ng5 Rd2 21.Ne4 Ne4 22.f3 Ng3 23.Red1 Rc2 24.c5 Re2 25.Re1 Rd8 26.Rad1 Re1 27.Re1 Rd2 28.f4 g6 29.e4 Ra2 30.Re3 Ne2 31.Kf1 Nc1 32.f5 Kg7 33.g5 gf5 34.ef5 f6 35.gf6 Kf6 36.Rf3 (time, 1–0). Nautiluschess – BeKind, ICS blitz, 2000.

(--> 1.b4 e5 2.a3 d5 3.Bb2 Nf6).

4.e3 (--> 1.b4 e5 2.a3 d5 3.e3 Nf6 4.Bb2).

4.e3 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3 e5).

4.b5 Nbd7 5.Qc1 Be7 6.Nf3 Nb6 7.e3 Na4 8.Nc3 Nb2 9.Qb2 e4 10.Nd4 d5 11.Be2 Qd6 12.0-0 0-0 13.f3 c5 14.bc6 bc6 15.Rab1 Bd8 16.fe4 Bc7 17.g3 Rb8 18.Qa2 Rb1 19.Rb1 Ne4 20.Ne4 de4 21.Qc4 Bd7 22.Bf1 Ba5 23.Nb3 Bb6 24.Qe4 Qa3 25.Bd3 f5 26.Qe5 Re8 27.Qf4 Rf8 28.Rf1 a5 29.Nd4 Kh8 30.Nf5 Qc5 31.Qd6 Bf5 32.Qc5 Bc5 33.Rf5 Rf5 34.Bf5 a4 35.Kf2 g6 36.Be6 Ba3 37.d4 Bb2 38.Ke2 Kg7 39.Kd3 Kf6 40.Bc4 Ke7 41.c3 1–0. marekt (2340) – trak_9 (1915), ChessWorld.net, 2003.

4.c3 Be7 5.c4 a5 6.Nc3 0-0 7.Nf3 ab4 8.ab4 Ra1 9.Qa1 e4 10.Nd4 c5 11.Nc2 Nc6 12.bc5 dc5 13.Ne3 Nb4 14.Qb1 Ng4 15.Ng4 Bg4 16.Ne4 f5 17.Ng3 Bg5 18.Bc3 f4 19.Ne4 Bf5 20.Rg1 Qe8 21.f3 Qh5 22.Bb4 cb4 23.Qb4? (better 23.g3=+) 23...Be4-+ (23...Qh2?! 24.Ng5 Ra8 25.Qc3 (25.Qb7?? Qg3 26.Kd1 Ra1 27.Qb1 Rb1) 25...Qg1 26.Qe5=) 24.fe4 Qh2 25.Qb6 Bd8 26.Qc5?? (better 26.Qd4-/+) 26...Qg3-+ 27.Kd1 Qb3 28.Kc1 Bf6 29.Qb5 (29.Qd5 Kh8 30.Qb5 Qa3 31.Kd1 Qa1 32.Kc2-+) 29...Qa3 30.Kc2 Qa2 31.Kc1 Rc8 32.e3 (32.Kd1 Rd8 33.Qb4 Bd4-+) 32...fe3 33.Qd5 Kh8 34.de3 Qa3 (better 34...Qb2 35.Kd1 Rd8 36.Bd3 Rd5 37.cd5 Qa1 38.Ke2 Qg1 39.g3-+) 35.Kd2 Rd8 36.Rh1 Rd5 37.ed5 (37.cd5 Qa2 38.Kd3 Bg5-+) 37…Qb2 (37...Qb2 38.Kd3 b5 39.cb5 Qb5 40.Ke4 Qb1 41.Kf3 Qf5 42.Ke2 Qd5-+) 0-1. Pereira – Depucco, internet, 2020.

4.c3 Be7 5.d3 0-0 6.Nd2 Be6 7.e4 Nbd7 8.Ngf3 Rc8 9.Be2 c5 10.bc5 Nc5 11.Qc1 (11.c4 Qa5=+) 11...Nb3 (11...Nh5!? 12.g3 f5-/+) 12.Nb3= Bb3 13.Qg5 (better 13.0-0=) 13...Ba2?? (better 13...Ne4 14.Qc1 Nc5-+) 14.0-0?? (better 14.Ra2 Ne4 15.Qc1+-) 14...Ne4 (better 14...Be6 15.Qd2 Qc7=) 15.Ne5. opperwezen (2695) - mathace (2420), lichess.org, 2016.

4.Nc3 d5 5.e3 Bd6 6.Nf3 e4 7.Nd4 0-0 8.d3 Bg4 9.Be2 Be2 10.Qe2 a5 11.ba5 Ra5 12.de4 de4 13.Ncb5 Be5 14.Rd1 Qc8 15.c4 Ra8 16.Nb3 Qf5 17.0-0 Qg5 18.h3 Nbd7 19.N3d4 Qg6 20.Nb3 Rfc8 21.Qc2 Bb2 22.Qb2 Qg5 23.Qb1 Ne5 24.Nd2 Nf3 25.Nf3 ef3 26.g3 Qh5 27.h4 Qg4 28.Kh2 Qc4 29.Rc1 Qe4 30.Rfd1 Qb1 31.Rb1 Ne4 32.Kg1 c6 33.Nd6 Nc3 34.Nc8 Rc8 35.g4 Ra8 36.Kh2 g6 37.Re1 Nb1 38.Rb1 Ra3 39.Rb7 Ra4 40.Kg3 h5 41.gh5 gh5 42.Rc7 Rg4 43.Kf3 Rh4 44.Rc6 Kg7 45.Rc5 Kh6 46.Rc6 Kg5 47.Rc5 Kg6 48.Rc6 Kf5 49.Rc5 Kf6 50.e4 Kg6 51.Rc6 Kg7 52.Rc2 Rg4 53.Ke3 Rg5 54.Kf4 f6 55.Rc7 Kg6 56.Rc8 Rb5 57.Rg8 Kf7 58.Rc8 Ra5 59.Rc1 Ra2 60.f3 Ra5 61.Kg3 Kg6 62.Rc6 Re5 63.Rd6 Re7 64.Kh4 Re8 65.Rd4 Rc8 66.f4 Re8 67.Rb4 Re7 68.Ra4 Re8 69.Rd4 Re7 70.Rb4 Re8 71.Rc4 Re7 72.Rd4 Re8 73.Ra4 Re7 74.Rc4 Re8 75.f5 Kh6 76.Ra4 Re7 77.Rc4 Rc7 78.Rc7 ½–½. Thinker – KnightDreamer v3.1, computer chess game, 2002.

4.Nc3 d5 5.Nf3 Bd6 6.Nb5 e4 7.Nfd4 Be5 8.Ne6 Be6 9.Be5 0-0 10.Nc7 Nc6 11.Bg3 Rc8 12.Ne6 fe6 13.e3 e5 (13...Ne7!?+=) 14.b5+/- Ne7 15.Be5 Nf5 16.Be2 Nd7 17.Bc3 Nc5 18.0-0 Qh4 19.Bg4 g6 20.Qe2 b6 21.a4 Ne6 22.a5 ba5 (22...h5 23.ab6 hg4 24.ba7+-) 23.Ra5 Ng5 (23...Qe7+-) 24.Ra7 Rf7 (24...Rb8 25.Rfa1 Rf7 26.Ra8+-) 25.b6 Ra7 26.ba7 Ra8 (26...Nf7 27.Qa6 Re8 28.Bf5 gf5 29.a8Q Ra8 30.Qa8 Qd8 31.Ra1 Qa8 32.Ra8 Nd8 33.Rd8 Kf7 34.Rd5+-) 27.Qb5 Ra7 (27...Nf7 28.Qb8 Rb8 29.ab8Q Qd8+-) 28.Qe8 1–0. Janek – Freddy, internet, 2016.

4.Nc3 Bd7 5.Nf3 Be7 6.e3 0-0 7.Be2 e4 8.Nd4 d5 9.d3 a5 10.b5 c5 11.bc6 Nc6 12.de4 de4 13.0-0 Rc8 14.Qd2 Nd4 15.ed4 Bd6 16.Rfe1 Re8 17.Nb5 e3 18.fe3 Ne4 19.Qd3 (19.Qd1 Qg5 20.Bd3 Bb5 21.Qe2–+) 19...Bb5 20.Qb5 (20.Qe4 Re4 21.Bb5 Qh4–+) 20...Qh4 (20...Rc2 21.Rec1 (21.Qb7 Qh4 22.Qf7 Kf7 23.g3 Bg3 24.Bc4 Ke7 25.Re2 Bf2 26.Kh1 Qg4 27.Rc2 Qf3) 21...Rd2 22.Rd1–/+) 21.Qd7 (21.Qe5 Be5 22.de5 Qf2 23.Kh1 Rc2 24.Rad1 Re2 25.Re2 Qe2 26.Rc1 Qb2 27.Rf1 Rc8 28.g4 Qe2 29.Kg1 Rc2 30.Rf2 Qf2 31.Kh1 Qh2) 21...Qh2 22.Kf1 Qh1 0–1. Waller – Cosmo, playchess.de, 2002.

4.Nc3 Be7 5.d4 e4 6.d5 Bf5 (6...a5 7.Qd4=+) 7.e3 c6 8.Nge2 0-0 9.Nd4 Bg6 10.h4 h6 (10...Nd5?? 11.Nd5 Bh4 12.Nf4+-; 10...cd5? 11.h5 Bh5 12.Rh5 Nh5 13.Qh5+-) 11.h5 Bh7 12.Bc4 Ng4?? (better 12...Qb6=) 13.Qg4+- f5 (13...Nd7+-) 14.dc6 Kh8 15.Qg7! Kg7 16.Ne6 Kh8 17.Ne4 Bf6 18.Nf6 Rf6 19.Nd8 Nc6 20.Bf6 1–0. Pierre – Minuteman, internet, 2019.

4.Nc3 Bf5 5.d3 c6 6.e4= Be6 7.h3 a6 8.Be2 b5 9.Bc1 h6 10.g4 Be7 11.Be3 d5 12.ed5 cd5–/+ 13.Bf3 e4?? 14.de4+/- 0-0?? 15.Nd5 Nc6 16.Ne7+- Qe7 17.e5 Rad8 18.Qe2 Ne5=+ 19.Bc5 Nf3 20.Nf3+/- Qb7 21.0-0 Rfe8 22.Nd2?? Bg4–+ 23.Qe8 Re8 24.hg4 Ng4 25.Rae1 Qb8 26.f4? Re1 27.Re1 Qf4 (28.Nf1 Ne5–+) 0–1. alaamattar (2110) – kcollins (2010), net–chess.com, 2006.

4.Nc3 Bf5 5.d3 Be7 6.e4 Bd7 7.Nf3 0-0 8.h3 Nc6 9.d4 ed4 10.Nd4 Nd4 11.Qd4 c5 12.bc5 dc5 13.Qd2 (13.Qe3!? Bc6 14.Bd3+=) 13...Bc6–/+ 14.Qd8 Rfd8 15.Bd3 (15.e5 Nd7 16.Ne2 Nb6–/+) 15...c4! 16.Bc4 Ne4 17.f3?? (better is 17.Ne4 Be4 18.Rd1–+) 17...Bh4–+ 18.Kf1 (18.g3 Bg3 19.Kf1 Nd2 20.Kg2 Nc4 21.Kg3 Nb2 22.Rhe1–+) 18...Nd2 19.Ke2 (19.Kg1 Nc4 20.Nd1 Rd2–+) 19...Nc4 20.Rab1 (20.Bc1 Bf6 21.Rb1 Bc3 22.Rb3–+) 20...Rd2 21.Kf1 Ne3 0–1. guides (1880) – marekt (2100), gameknot.com, 2014.

4.Nc3 Bf5 5.Nf3 +=.

4.Nc3 Bg4 5.d4 Nc6 6.d5 Ne7 7.Qd3 c6 8.h3 Bd7 9.dc6 Nc6 10.Nf3 Be7 11.e4 0-0 12.Rd1 Rc8 13.Qe3+= a6 14.Bd3 Re8 15.0-0 Rf8 16.Rfe1 Re8 17.Rd2 b5 18.Rc1 h6 19.Ne2 Be6 20.c4+/- bc4 21.Bc4 Bc4 22.Rc4 Qd7 23.Ng3 Qe6 24.Rdc2 Qd7 25.Nf5 Na7 26.Rc8 Nc8 27.Nd2 Bf8 28.Qf3 g6 29.Nh6 Bh6 30.Qf6 Na7 31.Nc4 Re6 32.Nb6 Qe7 33.Qf3 Qb7 34.Nd5 Nc6 35.Qc3 Nd8 36.Qc8 Bg5 37.Qb7 Nb7 38.Rc8 (38…Kg7 39.g3+-) 1–0. marekt – ado1981, ChessWorld.net, 2004.

4.Nc3 g6 5.e4= Bg7 6.Nf3 0-0 7.Be2 Nc6 8.d3 Bg4 9.0-0 Bf3 10.Bf3 (worse is 10.gf3 Nh5–/+) 10...Nd4 11.Nb1 a5 12.ba5 Ra5 13.Nd2 Nd7 14.Nb3 Nf3 15.Qf3 Ra8 16.Rab1 c6 17.Qh3 Qe7 18.Rfe1 b5 19.Qe3 Qh4 20.c4 Rfb8 21.Qc1 Nf6 22.h3 Nh5 23.cb5 cb5 24.Qd1 b4 25.ab4 Rb4 26.Bc3 Rb7 27.Bd2 Nf4 28.Na5 Rb1 29.Qb1 Qg5 30.Bf4 ef4 31.Nc6 f3 32.g3 Qh5 (32...Bc3 33.Qb7 Re8 34.Re3+/-) 33.Qb7+= Qh3 34.Ne7 (34.Qa8?? Bf8 35.Ne7 Kg7 36.Qa1 f6 37.Qf6 Kf6 38.Nd5 Ke5–+) 34...Kf8 35.Ng6 hg6 36.Qa8 ½–½. learsshadow (2025) – grandma (1980), gameknot.com, 2006.

4.Nc3 h6 5.e4 Be6 6.Nf3 Nc6 7.Bb5 a6 8.Bc6 bc6 9.d4 ed4 (9...Nd7 10.0-0=) 10.Nd4 Bd7 11.Qf3 Be7 (11...Ra7!?+=) 12.e5+/- de5 13.Nc6 Bc6 14.Qc6 (14.Qc6 Kf8 15.Rd1+/-) 1-0. leif41no (2300) - bertomeeggo (1685), ChessWorld.net, 2020.

4.d3 a5 5.b5 c6 6.a4 Be6 (6...Qb6 7.Nf3–/+) 7.e4 (7.Nf3 Qb6+=) 7...Nbd7 (7...Qb6 8.d4–/+) 8.Nf3 Qb6 9.c4 (9.d4 d5 10.ed5 cd5 11.de5–/+ (11.Ne5? Ne5 12.de5 Bc5–+)) 9...Be7 (9...d5!? 10.ed5 cd5–/+) 10.Be2+= h6 (10...0-0 11.0-0+=) 11.0-0 (11.Nc3=) 11...g5 (11...0-0 12.Nc3=) 12.Bc1 (12.Nc3 0-0+=) 12...c5 (better is 12...d5!?=) 13.Nc3+/- Nf8 14.Nd5 Bd5 (14...Qd8 15.h4+/-) 15.ed5 (15.cd5 Qd8+-) 15...Qc7 (15...Ng6 16.g3+/-) 16.Nd2 b6 17.Ne4 N8d7 (17...Ng6 18.g3+/-) 18.Bg4 (18.Bd2 Nf8+-) 18...0-0-0 (18...Ng4!? 19.Qg4 Nf6+/-) 19.Bf5 (19.h3 Ng4 20.hg4 Rh7+/-) 19...Rdg8 (19...Kb7 20.Bd2+-) 20.Nf6 Bf6 21.Qf3 (better is 21.Qh5+-) 21...Kb7?? (better is 21...Be7+/-) 22.Bd7+- Qd7 23.Qf6 Rg6 (23...Rh7 24.Ra2+-) 24.Qf3 (better is 24.Qh8 Qc8 25.Qc8 Kc8 26.f3+-) 24...g4 (24...h5 25.Kh1+-) 25.Qe2 (25.Qg3 Rhg8+-) 25...f5 26.Bd2 (26.f4 gf3 27.Qf3 f4+-) 26...h5 27.Qe1 (27.g3 h4+-) 27...f4 28.Ba5! ba5 29.Qa5 Ra8 (29...h4 30.Qa6 Kb8 31.a5+-) 30.Qd2 g3 31.fg3 fg3 (31...Rag8 32.a5 (32.gf4?! Rg2 33.Qg2 Rg2 34.Kg2 Qg4 35.Kh1 Qe2+-) 32...h4 33.b6+-) 32.h3 Qg7 (32...Rb8 33.a5+-) 33.a5 Rf8 (33...Rf6 34.a6 Kc8+-) 34.a6 Ka8 35.Qa5 Rgf6 (35...Rb8 36.b6 Qf6 37.Rf6 Rf6 38.b7 Ka7 39.Rb1 Rf1 40.Kf1 Rf8 41.Kg1 Rd8 42.Qb6 Kb8 43.a7) 36.Qd2 (36.Rfb1 Qg5 37.b6 Qc1 38.Rc1 Rf1 39.Rf1 Rg8 40.Qb5 Rc8 41.Qd7 Rc7 42.Qc7 e4 43.Rf8) 36...e4?? (36...Rg6 37.b6 e4 38.Rf8 Qf8 39.Rb1 Kb8 40.b7 Kc7 41.a7 Kd7 42.b8Q Qf2 43.Kh1 Qg2 44.Qg2 Ke7 45.Rf1 ed3 46.a8Q d2 47.Qab7) 37.Rfe1?? (better is 37.Rfb1 Rf2 38.Qe3 ed3 39.Qd3+-) 37...Rf2= 38.Qe3 h4?? (38...R8f3 39.gf3 Qb2 40.fe4 (40.Qe4?? Rf1 41.Rf1 Qh2; worse is 40.de4 Rh2 41.Re2 Re2 42.Rd1 Re3 43.Rd2 Qd2 44.b6 Re1) 40...Rg2 41.Kf1 Rf2 42.Kg1 Rg2 43.Kf1 Rf2 44.Kg1=) 39.b6 (better is 39.Qe4!? Rb2+-) 39...Qb2?? (better is 39...Rg2! 40.Kg2 Qb2 41.Re2 Qa1=) 40.b7+- Ka7 41.Qe4 Rg2 (41...Qf6+-) 42.Qg2 Rf2 (42...Qd4 43.Kh1 Rb8+-) 43.b8Q! Kb8 (43...Kb8 44.a7 Mate attack; 43...Qb8 44.Re7 Pinning) 44.a7 Kc7 45.Re7 Kb6 (45...Kd8 46.a8Q Ke7 47.Qe4 Qe5 48.Ra7 Kf6 49.Qd8 Qe7 50.Qde7) 46.a8N 1–0. Sapareva,Magdalena – Razmirov,Stanislav (1750), 4th Sofia Bulgaria, 2016.

4.d3 a5 5.Nd2 Be7 6.Ngf3 0-0 7.g3 Bd7 8.Bg2 Na6 9.ba5 Nc5 10.0-0 Ra5 11.Nb3 Nb3 12.cb3 c6 13.Nd2 Ra8 14.a4 Qb8 15.Nc4 b5 16.ab5 Qb5 17.Qc2 Rfb8 (17...Ra1 18.Ra1 Rb8 19.d4 ed4 20.Bd4 Qb3 21.Qb3 Rb3 22.h3=) 18.Ra8 Ra8 19.Ra1 Ra1 20.Ba1 Qa6 21.Bc3 Nd5 22.e4 Nc3 23.Qc3 g6 (23...Qa2 24.Bf1+=) 24.h3 h5 25.d4 f6 26.f4 (better is 26.d5=) 26...Qa7–/+ 27.Kh2 ed4 28.Qd3 Kg7 29.e5 d5 30.ef6 Bf6 31.Ne5 Bf5 32.Qd2 (32.Nc6?? Qb6 (32...Bd3?! 33.Na7 Be4 34.Bf1–+) 33.Qf3 Be4–+) 32...Qc5 33.g4 Qc2?? (33...Be5 34.fe5 hg4 35.hg4 Bg4–/+) 34.Qa5?? (better is 34.Qd4 hg4 35.Qa7 Kh6 36.hg4+-) 34...Be5–+ 35.Qa7 Kg8 36.fe5 hg4 37.Qe7 (37.Qb8 Kg7 38.Qd8–+) 37...Qf2 38.Qe8 Kh7 (better is 38...Kg7!? 39.Qe7 Kh6 40.Qf8 Kg5 41.Qf6 Kf4 42.hg4 Kg4 43.Qh8–+) 39.Qf7 Kh6 40.Qf8 (40.hg4 Qf4 41.Kg1 Qe3 42.Kh2 Qe5 43.Kh3 Qe3 44.Kh2 Qf4 45.Kg1 Qg4 46.Qf6–+) 40...Kg5 41.Qf6 Kf4 42.hg4 Kg4 43.e6 (43.Qh8 d3 44.Qh3 Kf4 45.Qh6 g5 46.Qc6–+) 43...Qf4 44.Kh1 Kg3 0–1. Szegi,Antal – Horvath,Istvan (2225), Kobanya op, 1996. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6)

4.d3 a6 5.e4 Nc6 6.Nf3 Bg4 (6...g6 7.Be2=+) 7.Be2= d5 (7...Be7 8.0-0=) 8.ed5 (better 8.Ne5!? Ne5 9.Be5 Be2 10.Qe2 (10.Ke2?! Bd6 11.Bd4 de4=) 10...de4 11.Nc3 ed3 12.cd3+-) 8...Qd5+= 9.c4 Qe6 (9...Qd7 10.Nbd2=) 10.0-0+= 0-0-0 (10...h5 11.b5 ab5 12.cb5+=) 11.Qc2 (11.Ng5!? Qd7 12.Bg4 Ng4 13.Nf7 Qf7 14.Qg4 Kb8 15.Rd1+-) 11...Bf3 (11...e4 12.de4 Ne4 13.Re1=) 12.Bf3 Nd4 13.Bd4 Rd4 (worse 13...ed4 14.Nd2+-) 14.Nc3 Bd6? Black intends e4 (better 14...g5!?=) 15.c5+- e4 (15...Be7 16.Ne2 Rh4+-) 16.de4?? (better 16.cd6 ed3 17.Qa4 Rd6 18.b5+-) 16...Bh2?? (better 16...Be5 17.Rac1 g5+=) 17.Kh2+- Ng4 (17...h5 18.Rfd1 Rd1 19.Rd1 (19.Qd1?! Qe5 20.Kg1 Qc3+=) 19...Ng4 20.Kg1+-) 18.Bg4 Qg4 19.f3 (19.Rad1 Rhd8+-) 19...Qh4?? (better 19...Qf4 20.Kg1 Rd2=) 20.Kg1+- Rhd8 (20...c6 21.Ne2 Rd7 22.Qc3+-) 21.Rad1 (21.Nd5 Qh6 22.Qf2 Rd2+-) 21...Qf4 (21...Rd1 22.Rd1 Rd1 23.Qd1+-) 22.Rd4 (better 22.Nd5 Qe5 23.c6 R8d5 24.ed5 Qd5 25.cb7 Kb7+-) 22...Rd4 23.Rf2 Qg5 (23...Qe3 24.Nd5 Qa3+-) 24.b5 (better 24.Nd5+-) 24...Qc5 25.Nd5 (25.ba6 Rc4 26.a7 Qa7+-) 25...Rc4 26.Qe2 (better 26.Qb2!? ab5 27.Qg7+-) 26...ab5+- 27.Qe3 Rd4 (better 27...Qe3 28.Ne3 Rc1 29.Nf1 Ra1+-) 28.Kh2?? (better 28.Re2+-) 28...Rd5–+ 29.Qc5 (29.Re2 Qe3 30.Re3–+) 29...Rc5 30.Ra2 Rc4 31.Kg3 (31.Rb2 Rc3–+) 31...Ra4 32.Rb2 Ra3 33.Rb5 Rd3 (33...f6 34.Rb1–+) 34.Kf4 (34.Ra5 Kd7–+) 34...f6 (better 34...c6 35.Ra5 Kc7–+) 35.Rd5 (35.Rh5 Rd7 36.g3–+) 35...Rd5 36.ed5 Kd7 37.Ke4 g6 38.f4 Kd6 39.g4 b5 40.Kd4 c5 (40...c5 41.dc6 Kc6–+) 0–1. Eigenmann,Peter – Schaefer,Hans_Juergen, Schleswig Holstein–ch Seniors, 2009.

4.d3 b5 5.Nf3 Be7 6.e3 0-0 7.Be2 h6 8.h3 c5 9.c3 Nc6 10.g4 cb4 11.ab4 Nh7 12.Rg1 a5 13.ba5 Ra5=+ 14.Ra5 Na5 15.g5 Ng5–/+ 16.Ng5 Bg5 17.Nd2? Nc6 18.d4 Bh3 19.Bc1 ed4–+ 20.cd4 b4 21.Ne4 Be7 22.Bg4 Bg4 23.Qg4 Bf6 24.Nf6? Qf6–+ 25.Bb2 Qg6 26.Qg6–/+ fg6 27.d5 Ne5 28.f4?? Nd3 29.Kd2 Nb2 30.Rg6 Rf6 31.Rg2 Kf7 32.Kc2 Nc4 33.Kb3 Ne3 34.Re2 Nd5 35.Kc4 Nf4 36.Rf2 d5 37.Kb4 Nd3 (38.Kc3 Nf2–+) 0–1. DOORMAN – dimim, Live Game Caissa's Web, 2004.

4.d3 b6 5.e4 g6 (5...Be7 6.Nf3=) 6.Nf3+= Bg7 7.Be2 0-0 8.0-0 Nh5 9.d4 Qe7 10.d5 (10.Nc3 Nf4+=) 10...f5= 11.Nfd2 Nf6 12.f3 a6 13.c4 Bb7 (13...c6 14.b5 cd5 15.cd5=) 14.Nc3+= c6 15.a4 cd5 16.cd5 Nbd7 17.Nb3 Rfc8 (17...Bh6 18.Bc1 Bc1 19.Rc1=) 18.Qd2 f4 19.Rac1 Rc7 20.Rc2 Rac8 21.Rfc1 Nb8 22.b5 a5 23.Ba3 (23.Bd3 Nbd7+=) 23...Nbd7 24.Nd1 Rc2 25.Rc2 Rc2 26.Qc2 Nc5 27.Nc5 dc5 28.Bc4 Qd6 29.Nf2 (29.Bb2 Nd7+=) 29...h6 (29...Bc8 30.Bb2+=) 30.Bb2+= Bc8 31.Nd3 Nd7 32.Bc3 Kh7 33.Be1 Bf6 34.g3 g5 35.g4 Nf8+= 36.h3 Bd7 37.Qh2 Be8 38.h4 Kg7 39.h5 Bf7 ½–½. Eigenmann,Peter – Lemster,Henning, Schleswig Holstein–ch Seniors op, 2007.

4.d3 b6 5.Nf3 Bb7 6.e4 g6 7.Be2 Bg7 8.0-0 0-0 9.Nbd2 a6 10.c4 c5 11.Qb3 Qc7 12.Rfc1 Nc6 13.Bc3 Nd4 14.Nd4 ed4 15.Bb2 Bh6 16.Rd1 Qd7 (16...Nd7 17.Bc1=) 17.Bc1 Ng4 18.h3 Ne5 19.Nf3 Nf3 20.Bf3 Bc1 21.Rdc1 f5 22.bc5 bc5 23.Re1 Rab8 24.Rab1 Qc7 (better is 24...Kg7 25.Qd1 fe4 26.de4 Qe6=) 25.Rb2?? (25.Qb6!? Qd7 26.Qa7+/-) 25...Bc6?? (better is 25...Be4 26.Qa2 Qa5–+) 26.Qc2 Rb2 27.Qb2 Rb8 28.Qc1 fe4 29.Be4= Be4 30.Re4 a5 31.Qg5 Rb1 32.Kh2 d5 33.Qe5 Qe5+= 34.Re5 dc4 35.dc4 d3 36.Rd5 Rc1 37.Rd3 Kf7 38.Kg3 Ke6= 39.Kf4 Rc4 40.Kg5 Rc2 41.Rf3 c4 42.Kh6+= Kd5 43.Kh7 Kd4 Black intends c3 44.Kg6 Re2 45.h4 c3= 46.Rf7 Re6–+ 47.Kg7 Rc6 48.Rd7= Kc4 49.Rd1 c2 50.Rc1 Kb3 51.h5 Kb2 52.Re1 c1Q 53.Rc1 Rc1 54.h6 Ka3 55.h7–/+ Rc7 56.Kg6 Rc8–/+ 57.Kg7?? Kb4 58.h8Q Rh8 59.Kh8 a4 60.f4 a3 61.f5 a2 0–1. stameni – kupovgeorge (1785), gameknot.com, 2014.

4.d3 Nc6 5.Nd2 a6 6.Ngf3 Be7 7.g3 Bd7 8.Bg2 Qc8 9.c4 0-0 10.Qc2 Re8 11.0-0-0 (11.0-0 Bh3=) 11...Ng4 12.Rdf1 b5 13.Rhg1 Rb8 14.h3 Nf6 15.c5 (15.g4 a5 16.ba5 Qa6+=) 15...dc5 (15...a5 16.ba5 Na5 17.g4–/+) 16.bc5 (16.Ne5 Ne5 17.Be5 cb4 18.ab4 Bh3 19.Bh3 Qh3 20.Bf6 Bf6–/+) 16...b4–/+ 17.ab4 (17.Be5!? ba3 18.Kd1–/+) 17...Nb4–+ 18.Qb1 Be6 (18...Bc5 19.Ne5 Bh3 20.Bh3 Qh3–/+) 19.d4? (better is 19.Qa1–/+) 19...Na2–+ 20.Kc2 Qd7 21.e4 (21.Ne5 Qa4 22.Kd3 Qb5 23.Ke3 Qb2 24.Qb2 Rb2–+) 21...Qa4 22.Kd3 Qb5 23.Ke3 Qb2 24.Qb2 Rb2 25.Rd1?? (25.Ne5 Rc2 26.Nc6–+) 25...ed4 26.Nd4 Bc5 0–1. Dejna,Miroslaw – Wodzynska,Zofia, VI MFSz Turniej Otwarty Poland, 2009.

4.d3 Nc6 5.g3 Bg4 6.Bg2 d5 7.Nd2 Qd6 8.Ngf3 Bf3 9.Nf3 h6 10.b5 Nd8 11.Ne5 d4 12.Nc4 Qc5 13.0-0 Rb8 14.e3 Ne6 15.ed4 Nd4 16.Re1 Be7?? (16...Ne6+-) 17.Re5 1–0. marekt (1625) – erikerik, gameknot.com, 2013.

4.d3 Be6 5.c4 Nbd7 6.Nc3 c6 7.g3 d5 8.c5 b6 9.cb6 ab6 10.Nf3 c5 11.bc5 bc5 12.Bg2 Rb8 13.Ng5?? (better is 13.Qd2+=) 13...Rb2–+ 14.0-0 Be7 15.Ne6 fe6 16.a4 Nb8 17.a5 Na6 18.Qa4 Kf7 19.e3 Qd7 20.Qd7 Nd7 21.Rfb1 Rhb8 22.Rb2 Rb2 23.h4 Ndb8 24.Na4 Rb5 (better is 24...Rb3!? 25.Bf1–+) 25.Nc3 Rb3 (better is 25...Rb4–+) 26.Ne2?? (26.Nd5 Bd8 27.Kf1–+) 26...Rd3 27.Kh2 Rb3 28.Nc1 Rb5 29.Nd3 Nc6 30.Bf1 c4 (30...Ra5?! 31.Ra5 Na5 32.Ne5 Kf8 33.Ba6–+) 31.Nc1 Ra5 32.Ra5 Na5 33.Na2 Nb3 34.Nc3 Nac5 35.Kg2 Nc1 36.f3 N1d3 37.h5 g5 38.g4 d4 39.ed4 ed4 40.Ne4 (40.Na2 Nf4 41.Kf2 d3–+) 40...Ne4 (better is 40...c3 41.Bd3 Nd3–+) 41.Bd3 (41.fe4 Nf4 42.Kf2–+) 41...cd3 42.fe4 0–1. Mr.Oldenslo – Darkseid, ChessWorld.net, 2012.

4.d3 Be6 5.e4 Nc6 6.Ne2 Be7=+ 7.f4 ef4 8.Nf4= Qd7 9.Be2 0-0 10.0-0+= a6 11.Nd2 Ne5 12.Be5 de5= 13.Ne6 Qe6 14.h3 h6 15.Nc4 b5=+ 16.Ne3 c5 17.c3 Rac8 18.Nf5 c4 19.dc4 bc4 20.Qa4 Rfe8 21.Ne7 Re7 22.Bf3 Qb6 23.Kh1 Rd8 24.Rad1 Rd3 25.Qc2 Red7 26.Rd3 cd3 27.Qd2 Qb5 28.g4 Nh7 29.Bd1 Ng5–+ 30.Qg2 Qc4 31.h4 Ne4 32.Re1 Nc3 33.Qf3 e4 34.Qf1 Qd5 35.Re3 Qd4 36.Bb3 Qe3 (37.h5 d2–+) 0–1. carlosfandangos – Steve20, ChessWorld.net, 2007.

4.d3 Bf5 5.Nd2 Be7 6.Ngf3 (6.e4 A) 6...Bg6 7.Ngf3 (7.Be2 0-0 8.Ngf3 Qd7 9.0-0 Nc6 10.Nc4 b5 11.Ne3 a5 12.Qd2) 7...0-0 8.Be2 Nc6 9.0-0 Qd7 10.Nc4 b5 11.Ne3 a5 12.Qd2; B) 6...Bd7 7.Ngf3 (7.Be2 a5 8.Ngf3 ab4 9.ab4 Nc6 10.b5 Nb4 11.Ra8 Qa8 12.c3) 7...0-0 8.Be2 a6 9.0-0 Nc6 10.c3 h6 11.d4 ed4 12.cd4; 6.g3 A) 6...Nc6 7.Ngf3 (7.Bg2 Ng4 8.Ngf3 0-0 9.0-0 Qd7 10.c4 a6 11.Ne4 h6 12.Qc2) 7...0-0 8.Bg2 b5 9.0-0 Bd7 10.c4 Qb8 11.Qb3 a5 12.d4; B) 6...0-0 7.Bg2 Nbd7 8.Bb7 Rb8 9.Bc6 a5 10.b5 Nc5 11.Ngf3 Bd7 12.Bd7; C) 6...a5 7.Bh3 (7.Bg2 ab4 8.Bb7 Ra7 9.Be4 Be4 10.Ne4 Ne4 11.de4 ba3 12.Ra3) 7...Bh3 8.Nh3 0-0 9.0-0 h6 10.Nc4 Qd7 11.Kg2 ab4 12.ab4; D) 6...h6 7.Bg2 (7.Ngf3 Nc6 8.Nc4 b5 9.Ne3 Be6 10.c4 bc4 11.dc4 0-0 12.Bg2) 7...Nc6 8.Nc4 a6 9.Nf3 0-0 10.0-0 Be6 11.e4 Ng4 12.Qe2; E) 6...Qd7 7.Ngf3 (7.Bg2 Nc6 8.Ngf3 h6 9.Nc4 0-0 10.0-0 a6 11.e4 Bg4 12.Qd2; 7.e4 Bg4 8.f3 Be6 9.f4 Bg4 10.Ngf3 ef4 11.gf4 Nc6 12.Nc4) 7...0-0 8.Bg2 Nc6 9.0-0 h6 10.Nc4 a6 11.e4 Be6 12.Ne3) 6...0-0 7.g3 (7.e4 Be6 8.d4 ed4 9.Nd4 Nc6 10.Ne6 fe6 11.Bb5 a5 12.0-0) 7...c6 (7...a5 8.Bg2 ab4 9.ab4 Ra1 10.Qa1 Na6 11.c3 c6 12.0-0) 8.Bg2 b5 (8...Nbd7 9.e4 Be6 10.0-0 h6 11.d4 a5 12.Qe2) 9.0-0 a5 10.c4 (10.e4 Bg4 11.h3 Bh5 12.Nb3) 10...bc4 (10...Qb6 11.a4 ba4 12.c5) 11.Qc2? (better is 11.dc4 ab4 (11...Na6 12.c5) 12.ab4 Ra1 13.Qa1=; 11.Nc4 ab4 12.ab4) 11...cd3–+ 12.ed3 ab4 13.ab4 Ra1 14.Ra1 Qb6 15.Bc3 Qb5 16.Re1 (better is 16.Ne4!?–+) 16...Qd3 17.Qb3 e4?? (better is 17...Nd5 18.Rc1 Be6–+) 18.Ng5?? (18.Bf1 Be6 19.Bd3 Bb3 20.Bf6 Bf6 21.Ne4–/+) 18...d5?? (better is 18...Nd5 19.Nge4 Nc3 20.Qc3 Qc3 21.Nc3 Bd8–/+) 19.f4 (better is 19.Bf1 Qc3 20.Qc3+-) 19...d4–+ 20.Nb1 (20.Nde4 Ne4 21.Be4 Be4 22.Ne4 dc3 23.Nf2–+) 20...dc3 21.Nc3 Na6 (21...Qd4 22.Kh1 Bb4 23.Ne2–+) 22.b5 (22.Be4 Ne4 23.Nge4 Qd4 24.Kg2 Bb4–+) 22...cb5 23.Qb5 (23.Bf1 Qd4 24.Kh1 h6–+) 23...Qc3 24.Qf1 Nb4 25.Ra1 Nd3 26.Ra4 Bc5 27.Kh1 Qc2 28.Ra1 Bd4 29.Rb1 Nf2 30.Kg1 Nd1 31.Kh1 Qb1 0–1. Dejna,Miroslaw – Pielach,Jacek, Ferie z szachami Poland, 2010.

4.d3 Bg4 5.Nd2 Be7 6.Ngf3 0-0 7.e4 Nc6 8.Be2 a5 9.b5 Na7 10.a4 c6 11.c4 cb5 12.cb5 Rc8 13.0-0 Qd7 14.d4 ed4 (14...Rfd8 15.Nc4 Ne4 16.Nb6+/- (worse is 16.Na5 Nc3 17.Bc3 Rc3=)) 15.Bd4+/- b6 (15...Ra8!?+/-) 16.Bb6+- Bd8 17.Bd4 Re8 18.Bd3 Qb7 19.Re1 Nh5 (19...Be6 20.Rc1+-) 20.Be3 Bb6 (20...Nf6 21.Rb1+-) 21.h3 (better is 21.Nc4 Be3 22.Re3+- (worse is 22.Ne3 Nf6+-)) 21...Be3 22.Re3 Be6 23.Ng5 Nf4 24.Bf1 Rc5 (24...d5+-) 25.Ne6 Re6 26.Qg4 Rf6 27.Rg3 (better is 27.Nb3!? Rc2 28.Na5 Qb8+-) 27...Nh5 28.Re3 Nc8?? (28...Nf4 29.Nb3 Rc2 30.Na5 Qb8+-) 29.Nc4 (29.Nb3 g6 30.Nc5 dc5+-) 29...Rc4? (better is 29...Rg6 30.Qh4 Qc7+-) 30.Bc4 (30.Qh5?! Rc2 31.Qh4 Rcf2+/-) 30...Nf4 31.g3 Ng6 32.Rd1 Qb8 33.Rd5 Ne5 34.Qe2 Nb6 35.Qa2?? Nec4–+ 36.Rf5? Rf5 37.ef5 Ne3 38.fe3 Qc8 39.e4 Qc1 40.Kf2 Qc5 41.Kf3 Qe5 42.g4 Qd4 43.g5 Qa4 44.Qa4 Na4 45.f6 gf6 46.gf6 Nb6 47.e5 de5 48.Ke4 a4 49.Ke5 a3 50.Kd6 a2 51.Kc6 Na8 52.Kb7 a1Q 0–1. Labrousse,Jeanne – Morvan,Franck, Pays de Loire–chT, 2009.

4.d4 Nbd7 5.c4 g6 6.e3 Bg7 7.Nf3 Qe7 8.Be2 0-0 9.0-0 Re8 (10.Nc3 e4+=). chacal (1665) – mensah (1835), internet, 2007.

4.d4 Nbd7 5.Nf3 e4 6.Nfd2 Be7 (6...a5 7.b5=+) 7.c4= c6 8.e3 0-0 9.Nc3 d5 10.Qb3 Nb6 11.cd5 cd5 12.h3 Be6 13.a4 (13.Be2 Qd7=+) 13...Rc8=+ 14.a5 Nbd7 (14...Nc4 15.a6-/+) 15.g4 (15.a6 Rb8=+) 15...h6 16.b5 Ne8 (16...Re8 17.a6=+) 17.Nd5 Nc7 (better 17...Kh8 18.a6 ba6 19.Ra6 Nb6 20.Ne7 Bb3 21.Nc8 Nc8 22.Nb3 Nc7=) 18.Ne7+/- Qe7 19.Bc4 (19.Ba3!? Qh4 20.Qb1+/-) 19...Bc4+= 20.Nc4 Nd5? (better 20...Qe6=) 21.Ba3+- Qf6 22.Bf8 Rf8 (22...Kf8 23.0-0+-) 23.Nd2 Qe6 24.Rc1 (24.f4 ef3 25.e4 Nc7+-) 24...f5 (24...N7f6 25.f3+-) 25.gf5 Qf5 26.Rf1 Kh8 (26...Qe6 27.f3 ef3 28.e4+- (28.Nf3?! Re8+-; 28.Rf3?! Rf3 29.Nf3 N7f6+-)) 27.b6! ab6 28.ab6 (28.f3!? Ne7 29.Rc7 ba5 30.Qb7 Rd8 31.Qe4 Qh3+-) 28...N7b6 29.Rc5 Qh3? (better 29...Qe6+-) 30.Rd5 Nd5 31.Qd5 Ra8 32.Qe4 (32.Qb7 Ra1 33.Nb1 Qf5+-) 32...Ra1 33.Ke2 (33.Nb1 Qd7 34.Ke2 Qb5 35.Qd3 Qh5 36.Kd2 Qa5 37.Qc3 Qa2 38.Qc2 Qa5 39.Kc1 Qa3 40.Kd1 Qa6 41.Qc8 Kh7 42.Qf5 g6 43.Qd7 Kg8 44.Qe8 Kg7 45.Qe7 Kg8 46.Qd8 Kf7 47.Qc7 Kg8 48.Qb8 Kf7 49.Qf4 Kg8 50.Qb8 Kf7 51.Qf4 Kg8 52.Qb8=) 33...Qh5 34.Qf3?? (better 34.f3 Qh2 35.Rf2+-) 34...Qb5 35.Nc4 Qc4 36.Kd2 Ra2 37.Ke1 Qc3 (37...Qc3 38.Kd1 Qd2) 0-1. black_bishop_88 (2520) - salma_cantik (2480), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6)

4.d4 e4 5.e3 d5 6.Bb5 c6 7.Ba4 a5 8.b5=+ Bd7 9.bc6 Bc6 10.Nc3 Qd7 11.Bc6 bc6 12.Nge2 Na6 13.Na4 Rb8 14.Bc3 Qc7 15.Qd2 Rb5 16.Nb2 Bd6 17.a4= Rb2 18.Bb2+/- 0-0 19.h4 Nb4 20.0-0 c5 21.dc5+/- Qc5 22.Bf6 gf6 23.Nd4 Be5 24.Rac1 Qc7 25.h5 Kh8 26.h6 Rg8 27.f4 ef3 28.Rf3 Bh2 29.Kh1 Bg3 30.c3 Qe5? 31.Rf5 Qf5 32.Nf5 Nc6 33.Qd5 Ne5 34.Ng3 Rg3 35.Qd8 (35…Rg8 36.Qf6 Rg7 37.Qg7#) 1–0. pereira – guest, internet, 2007.

4.d4 e4 5.e3 d5 6.Nh3 Bd6 7.Nf4 Bf4 8.ef4 0-0 9.Nd2 Re8 10.Be2 a6 11.0-0 Nc6 12.f3 e3 13.Nb3 Qd6 14.Nc1 Qf4 15.Nd3 Qg5 16.f4 Qg6 17.Ne5 Ne5 18.fe5 Bh3 19.Bf3 Ne4 20.Qd3 Nf2 21.Qg6 hg6 22.gh3 Nh3 23.Kg2 Nf4 24.Kg3 g5 25.Rfe1 Re6 26.Re3 Kf8 27.Bg4 Re7 28.h4 f6 29.ef6 Re3 30.Kf2 Ree8 31.fg7 Kg7 32.hg5 (time, 1–0). Nautiluschess – saville, ICS blitz, 2000.

4.d4 Be6 5.de5+= Nd5 6.Nf3 h6 7.g3 Nc6 8.ed6 Qd6 9.Nc3 0-0-0 10.e4 Nc3 11.Bc3 Qd1 12.Rd1+/- Bg4 13.Rd8 Nd8 14.Ne5 Be6 15.Bc4 Bc4+/- 16.Nc4 Ne6 17.f4 f6 18.e5 Be7 19.f5 Ng5 20.e6 b5 21.Nd2 c5 22.h4 Nh7 23.bc5 Bc5 24.Bb4 Bb4 25.ab4 Re8 26.Ne4 Kc7 27.Kf2 Nf8 28.Ra1 Kb6 29.Nd6 Rb8 30.e7 h5 31.Ra3 g5 32.Rc3 Nd7 33.Nc8 Kb7 34.e8Q (34...Ne5 35.Qe7 Nd7 36.Qd7 Ka6 37.Qa7#) 1–0. bicycle – Steve20, ChessWorld.net, 2007.

4.d4 Be7 5.de5 de5 6.Qd8 Bd8 7.Be5 0-0 8.c4 Nbd7 9.Bb2 c6 10.Nf3 Nb6 11.e3 Be6 12.Nbd2 Na4 13.Be5 Be7 14.Nd4 Bd7 15.c5 Ng4 16.Bg3 Rad8 17.Be2 Nf6 18.0-0 (18.Nc4 Nd5+-) 18...Bc8 19.N2b3 Nc3 20.Bf3 Nfd5 (20...Nfe4 21.Be5+/-) 21.Rfc1 Bf6? (21...f5 22.a4 Bf6 23.b5+-) 22.a4 (better 22.e4!? Bd4 23.Nd4 Nf6 24.Nc6 Rd3 25.Ne7 Kh8+-) 22...Rfe8 23.b5 g5 (23...cb5 24.ab5 a6 25.ba6 ba6 26.c6+-) 24.bc6 bc6 25.Na5?? (25.Nc6 g4 26.Nd8 gf3+-) 25...g4? (better 25...Bd4 26.ed4 g4 27.Bd5 Ne2 28.Kh1 Nc1 29.Rc1 Rd5 30.Nc6 Bd7=) 26.Bd5+- Nd5 (26...Bd4 27.Bc4 (27.ed4?! Ne2 28.Kh1 Nc1 29.Rc1 Rd5=; 27.Bc6?! Ne2 28.Kf1 Ba6 29.ed4 Ng3 30.Kg1 Ne2 31.Kh1 Nc1 32.Be8 Ne2+-) 27...Bf6 28.Nc6+-) 27.Nac6 (27.Ndc6?! Ba1 28.Nd8 Bb2+-) 27...Rd7 28.Nb8 Rb7 29.c6 Rb2 30.Nd7 Bd7 31.cd7 Rd8 32.Rc8 Nb6? (32...Rb7 33.Nc6 Ba1 34.Rd8 Kg7 35.Rg8 Kh6+-) 33.Rd8 Bd8 34.Nc6 Bf6 (34...Bg5 35.d8Q Bd8 36.Nd8+-) 35.Be5 Bd8 (35...Rc2 36.Bf6 Nd7 37.Ne7 Kf8+-) 36.Bb2 Nd7 37.Rd1 (better 37.Nd8 Nc5+-) 37...Bf6 38.Rd7 Bb2 39.Na7 Kf8 40.Nc6 Ke8 (40...Bc3 41.Rd3 Be1 42.Kf1+-) 41.Rb7 (41.Rd8) 41...f5 (41...Bc1+-) 42.a5 Bc3 43.a6 (43.a6 Be1 44.a7 Bf2 45.Kf1 Bg3 46.a8Q Bb8 47.Qb8) 1-0. black_bishop_88 (2480) - junmark_baldesimo24 (2340), lichess.org, 2020. (=1.a3 d6 2.b4 e5 3.Bb2 Nf6 4.d4 Be7)

4.e3 b6 5.c4 a5 6.d4 (better is 6.Nc3!?=) 6...ed4–/+ 7.ed4 ab4 8.ab4 Ra1 9.Ba1 Bf5 (9...d5 10.Nd2 Bd7+=) 10.Bd3= Bd3 11.Qd3 g6 (11...d5 12.c5=) 12.Ne2 Bg7 13.0-0 0-0 14.d5 Re8 15.Na3 Qe7 16.Ng3 Nfd7 (16...Nbd7!?=) 17.Bg7+= Kg7 18.Nc2 Qf6 19.f4 Qb2 20.h4 (20.Ne4 Na6 21.Qc3 Qc3 22.Nc3 Nab8+/-) 20...f6?? (better is 20...Na6!?–/+) 21.Rf3 (21.Ra1 Kg8+/-) 21...Nf8 (21...f5 22.Qd4 Qd4 23.Nd4=) 22.h5 Nbd7 23.hg6 hg6 24.Ne4 Re7 (24...Nb8 25.Rf1 Na6 26.Qc3 Qc3 27.Nc3+/-) 25.Nc3 (25.Rf1 b5 26.cb5 Nb6+/-) 25...Qb3 (25...g5 26.Ne3 Kg8 27.Rg3+=) 26.Rf1 b5 27.cb5 Nb6 28.Rb1 Qc4 29.Qc4 Nc4 30.Kf2 Nd7 31.Nd4 Ndb6 32.Ne6+- Kf7 33.Rh1 Kg8 34.Rh6 Nd5 35.Nd5 Re6 36.Rg6 Kf7 37.Rh6 Kg7 38.Rh3 Re4 39.Rc3 Rd4 40.Nc7 Rf4 41.Kg3 Re4+/- 42.Nd5 Rd4 43.Nf4 Kf7 44.Ne2 Re4 45.Rc2 Ke6 46.Nf4 Ke5 47.Ng6 Kd4 48.Rf2 Kc3 49.Rf6 Kb4 50.b6 Nb6 51.Rd6 Kc5 52.Rd8 Nd5 53.Kh3 Re6?? 54.Rd5!+- Kd5 55.Nf4 Ke5 56.Ne6 Ke6 57.Kg4 Kf6 58.Kh5 Kg7 59.Kg5 Kh7 60.g3 Kg7 61.g4 Kh7 62.Kf6 Kg8 63.g5 Kf8 64.g6 1–0. Dragojevic,Miodrag (2120) – Pesusic,Boris (1985), CRO–ChT2 jug, 2013.

4.e3 b6 5.Nf3 Bb7 6.Be2 Nbd7 7.0-0 Be7 8.d3 0-0 9.c4 c5 10.Qc2 Rc8 11.b5 e4 12.de4+= Be4 13.Qb3 Re8 14.Rd1 Bf8 15.Nc3 Ba8 16.Rd2 Qc7 17.Qc2 Re7 18.Rad1 Re6 19.Ng5 Ree8 20.Bd3 h6?? 21.Bh7 Kh8 22.Nf7# 1–0. Eralos (2050) – coelho8 (2010), ajedrez21.com, 2004.

4.e3 b6 5.Nf3 Bb7 6.Be2 Be7 7.d3 0-0 8.c4 a6 9.Nc3 Nbd7 10.0-0 e4 11.de4 Ne4 12.Ne4 Be4 13.Qd4 Nf6 14.Nd2 Bb7 15.Bf3 Bf3 16.Nf3 (worse is 16.gf3 Re8+=) 16...c5 17.bc5 (17.Qd3 d5+=) 17...dc5= 18.Qd8 Rad8 19.Rfd1 Ne4 20.Ne5 (20.Kf1 Rd1 21.Rd1 Rd8 22.Rd8 Bd8=) 20...Bf6+= 21.f3 Ng5 (21...Nd2!? 22.Rac1 Rfe8–/+) 22.Kf2 Ne6 23.Rab1 Rd1 24.Rd1 b5 25.cb5 ab5 26.Rc1 c4 27.Rc2 Nc5 28.Ke2 Re8 29.f4 Ra8 30.Bd4 Nb3–/+ 31.Ra2?? Nd4 32.ed4+= b4 33.Nc4= Bd4 34.Kd3 Bc5 35.a4 b3 36.Rb2 Ra4 37.Rb3 g6 38.g4 Bg1 39.h3 f5 40.gf5+= gf5 41.Ra3 Ra3+= 42.Na3 Kf7 43.Ke2 Kf6 44.Kf3 Ba7 45.Nc4 h5 46.Nd6 h4 47.Ne8 Ke7 48.Ng7 Kf6 49.Ne8 Ke7 50.Nc7 Kd7 51.Nb5 Bg1 52.Nc3 Ke6 53.Ne2 Ba7 54.Nc1 Kf6 55.Nd3 Kg6 56.Ne5 (56.Ne5 Kh5 57.Ke2=) 1–0. Fournier,Frederic (1745) – UA3GLS (1605), ChessOK.com, 2012.

4.e3 c5 5.bc5= dc5 (5...Nc6 6.cd6 Bd6 7.Nc3+=) 6.Be5+= Nc6 7.Bb5 Bd7 8.Bc6 Bc6 9.Nf3 Qa5 (9...Qe7!? 10.Bf4 g5 11.Bg5 Rg8+=) 10.Bf6+/- gf6 11.0-0 Rd8 (11...Rg8 12.Qe2+/-) 12.d3 Bg7 13.Nbd2 f5 14.Ra2 (14.Rb1 Rg8+/-) 14...Bc3 (14...Qc3 15.Qe2+/-) 15.Nb1 Bf6 16.Qe2 Rg8 17.Nbd2 Bc3 18.e4 Kf8 19.Nc4 (19.Nb3 Qb6 20.Rb1 fe4 21.de4 Qb5=) 19...Qc7 20.Qe3 (20.ef5? Qf4 21.g3 Bf3–+ (< 21...Qf3 22.Qf3 Bf3 23.Rb1–+)) 20...fe4 21.de4 Bf6 (21...Bd4 22.Qh6 Rg7 23.Nd4 Rd4 24.Ne3 Be4 25.f3=) 22.Re1 Re8 (better is 22...Qe7!? 23.Ncd2 b6+=) 23.Qc5+- Be7 (23...Qe7 24.Qe7 Re7 25.Ncd2+-) 24.Qh5 Bf6 25.Ncd2 Qf4 26.g3 Qd6 (26...Qg4 27.Qh6 (27.Qh7 Rh8 28.Qf5 Qf5 29.ef5 Re1 30.Ne1 Bc3–/+) 27...Qg7 28.Qe3+-) 27.c4 (27.Qh7?! Bc3 28.e5 Qd5 29.Qh6 Rg7 30.Qh8 Rg8 31.Qh6 Rg7 32.Qh8 Rg8 33.Qh6=) 27...Bd7?? (27...Bg7+-) 28.e5 (28.Qh7?! Rh8 29.e5 Re5+/- (29...Rh7?? 30.ed6 Re1 31.Ne1+-)) 28...Qc5 (28...Qc6 29.ef6 Re1 30.Ne1 Qf6 31.Ne4+-) 29.Ne4 Bg4 (29...Qc4 30.Rd2 Be7 31.Rd7+-) 30.Nc5 Bh5 31.ef6 Bf3 (31...Re1 32.Ne1 Rg6+-) 32.Nd7# 1–0. fajgo – galaxy778, internet, 2002.

4.e3 Bc5 5.c4 Be7 6.Nf3 0-07.Be2 a6 8.Qc2 Bd7 (8...e4 9.Ng5 d5 10.cd5 Qd5 11.h4= (worse 11.Qc7 Qg5 12.Qe7 Qg2=+)) 9.Nc3 Re8 10.0-0-0 (10.0-0 Nc6+=) 10...Nc6 (10...a5 11.b5=+) 11.h4 (11.d4 ed4 12.ed4 Bg4=+) 11...h6 (11...Ng4 12.Rdf1=+) 12.Ne4 (12.d4 ed4 13.ed4 Bg4=) 12...Ne4 13.Qe4 Qc8 14.Qc2 Bf6 15.e4 Nd4 16.Nd4 ed4 17.Rdg1 Bc6 (17...a5 18.b5 c6 19.g4 cb5 20.g5=) 18.f3 (18.d3 Be5=) 18...Qd7 (18...Qe6 19.g4=) 19.Qd3 (19.g4!? Ba4 20.Qb1=) 19...b5–/+ 20.Qb3 (20.Bd4 bc4 21.Qc3 Bd4 22.Qd4 a5 23.Bc4 ab4 24.ab4 Reb8–/+) 20...bc4 (20...a5!? 21.g4 ab4 22.ab4 Be5–/+) 21.Bc4=+ Rf8 (21...Bb5!?=+) 22.g4= Ba4 (22...Be5 23.g5 h5 24.g6+=) 23.Qd3+= Qc6 (23...Be5 24.g5 h5 25.g6+-) 24.Kb1+- (worse 24.Bd4 Bb5 25.Bf6 gf6=+) 24...Rfb8 (better 24...Bb5!? 25.Rc1 Bc4 26.Qc4 Qc4 27.Rc4 c5+-) 25.Bd5 (25.Bd4?! Bd4 26.Qd4 Qc5 27.Qc5 dc5+=) 25...Bc2? (better 25...Bb5 26.Qb3 Qd7+-) 26.Qc2 Qc2 27.Kc2 Ra7 (27...c6 28.Bc4 a5 29.d3 ab4 30.ab4 Rb4 31.g5 hg5 32.hg5+-) 28.g5 (28.Kd3 c5 29.g5 Be5+-) 28...hg5 (28...d3 29.Kb3 Bb2 30.Kb2+-) 29.hg5 Bg5 (29...d3 30.Kb3 Bb2+-) 30.Rg5 c6 31.Rgh5 (better 31.Bd4 Kf8 32.Rh8 Ke7 33.Rb8 cd5 34.Ba7 de4 35.fe4+-) 31...g6 (31...Kf8 32.Rh8 Ke7 33.Rb8 cd5 34.ed5 Rc7 35.Kd3 f6+-) 32.Rh8 Kg7 33.Bd4 f6 34.R1h7 1–0. De Bem,Lais Colin – Pinheiro,Erica De Castro, Championship Brasileiro Juvenil Women, 2016. (=1.c4 e5 2.e3 Nf6 3.a3 Bc5 4.b4 Be7 5.Nf3 d6 6.Bb2 0-0)

4.e3 d5 5.Be5 Nc6 6.Bb2 Bd6 7.h3 Be5 (7...Bf5 8.Nf3+=) 8.Be5+/- Ne5 9.d3 b6 (9...d4 10.Nf3 de3 11.fe3+= (worse is 11.Ne5 ef2 12.Ke2 Qd4–/+)) 10.Be2 Bb7 11.Nf3 Qd6 12.c4 (12.Ne5 Qe5 13.d4 Qe6+/-) 12...dc4+= 13.d4 (13.dc4!? Qd1 14.Kd1 Rd8 15.Ke1 Bf3 16.gf3+/-) 13...Nf3= 14.Bf3 Bf3 15.Qf3 0-0 16.Nc3 Rfe8 17.0-0 a6 18.Rfd1 White plans d5 18...b5 (18...c6!?=) 19.e4+= Qc6 20.d5 Qd6 21.Re1 Re5 22.Qe3 Rae8 23.f4 R5e7 (23...Re4 24.Ne4 Ne4 25.Rad1=) 24.Qf3 Qd7 (24...Qb6!? 25.Kh2 a5+=) 25.e5+/- h6 26.Kf1 (26.a4!? Kh8+-) 26...Nh7+/- 27.g4 White intends f5 (27.a4 Rb8+/-) 27...g6 (27...Nf8 28.a4 Ng6 29.ab5 ab5 30.Ra7+/-) 28.Rad1 f6 29.e6 Qd8 30.h4 Kg7 31.f5 g5 32.h5 Qa8 (32...Qd6 33.Qf2+/-) 33.Ne4 (33.a4 Qb7+-) 33...Rd8+/- 34.Nc5 Nf8 35.Rd4 Qa7 36.Qc3 a5 (36...Qa8 37.Red1+/-) 37.Red1 (37.a4 ba4 38.Ra1 ab4 39.Qb4 c3 40.Ra4 Qb6+-) 37...Qb6? (better is 37...a4!?+/-) 38.Ne4+- a4?? (38...Nh7 39.ba5 Qa6 40.Qb4+-) 39.R4d2 (better is 39.d6 Re6 40.fe6 Ne6 41.Rc4+-) 39...Nh7 40.d6 cd6 41.Rd6 Rd6 42.Rd6 Qc7 43.Qd4 Qc8 44.Rd7 Qe8 45.Qa7 Kf8 46.Re7 Qe7 47.Qe7 Ke7 48.Nc3 Nf8 49.Nb5 Ne6 50.fe6 Ke6 51.Ke2 f5 52.Nd4 Ke5 53.Nf5 Kf4 54.Nh6 Kg3 55.b5 (55.b5 Kf4 56.b6+-) 1–0. ihmisporsas (1775) – fatt74 (1730), gameknot.com, 2012.

4.e3 Bd7 5.c4 Nc6 6.Nc3 g6 (6...Bf5 7.Nf3=) 7.Nf3 Bg7 8.b5 Ne7 9.d4 0-0 (9...ed4!? 10.Nd4 0-0=) 10.de5+/- de5 11.Ne5 Be6 12.Be2 c6 13.0-0 Qc7 14.Nf3 a6 15.a4 ab5 16.ab5 Ra1 17.Qa1 Rd8 (17...Nf5 18.e4 Nh6 19.Nd5 cd5 20.ed5 (20.Bf6?! Bf6 21.Qf6 de4+=) 20...Bd5 21.cd5+-) 18.Na4 cb5 (18...Ne8 19.b6 Qb8 20.Nc5+-) 19.cb5 (better 19.Be5 Qa5 20.Bf6 Qa4 21.Bg7 Qa1 22.Ba1 (22.Ra1?! Kg7 23.cb5 Bd5+/-) 22...Bc4 23.Rd1 Rd1 24.Bd1+-) 19...Qc2?? (better 19...Ned5+/-) 20.Bf6+- Bf6 21.Qf6 Nd5 (21...Qe2 22.Nc3 Qd3 23.Qe7 Rc8+-) 22.Qd8 (22.Qd8 Kg7 23.Bd1+-) 1-0. allyouneedisluft (2485) - vlad_00 (2305), Rated Bullet game, lichess.org, 2017. (=1.a3 Nf6 2.b4 d6 3.Bb2 e5 4.e3)

4.e3 Bd7 5.Bc4 Be6 6.Be6= fe6 7.Ne2 Qd7 8.0-0 Nc6 9.f4 Be7 10.fe5 Ne5 11.Be5 de5 12.Nbc3 Bd6 (12...0-0-0 13.d3=) 13.Ng3+= 0-0-0 14.Nge4 Be7 15.Qf3 Ne4 16.Ne4 (worse 16.Qe4 Qd2 17.Nb5 Bg5=+) 16...Rhf8 17.Qe2 (17.Qh5 h6+/-) 17...Rf1 (17...Rf5 18.Qg4 g6 19.d3+=) 18.Rf1+/- Rf8 (18...Qc6 19.d3+/-) 19.Rf8 Bf8 20.Qh5 g6 21.Qe5 Bd6?? (better 21...Bg7 22.Qf4 Kb8+/-) 22.Qh8+- Qd8 23.Nd6 (better 23.Qh7 g5+-) 23...cd6 24.Qh7 Qd7? (24...Qf6 25.c4+-) 25.Qd7 (25.Qg6 e5+-) 25...Kd7 26.h4 Ke7 27.g4 Kf6 28.Kg2 e5 29.Kg3 d5 30.e4! d4 (30...de4 31.Kf2 Combination) 31.g5 Ke6 32.Kg4 a5 (32...Kf7+-) 33.h5 gh5 34.Kh5 Kf7 35.ba5 d3 36.Kh6 (better 36.g6 Kg7 37.cd3+-) 36...dc2-+ 37.Kh7 (37.g6 Kf6 38.g7-+) 37...c1Q 38.g6 Ke6 (38...Kf6 39.d4 Qh1 40.Kg8 Qh6 41.de5 Kg6 42.a6 Qg7) 39.g7 (39.d4 Qg5 40.Kg7 ed4 41.a6 Qe5 42.Kg8 Kf6 43.ab7 Qb8 44.Kh7 Qc7 45.g7 Qg7) 39...Qg1 (39...Qh1 40.Kg6 Qe4 41.Kh6 Qh4 42.Kg6 Qg4 43.Kh7 Kf7 44.g8Q Qg8 45.Kh6 Qg6) 40.g8Q+- Qg8 41.Kg8 Kf6 42.Kf8 Kg5 43.Ke7 Kf4 44.d3 Ke3 45.Ke6 Kd3 46.Ke5 Kc4 47.Kd6 Kb5 48.e5 Ka5 49.e6 Ka4 50.e7 b5 51.e8Q Ka3 (51...Kb3 52.Qb5 Kc3 53.a4 Kd2 54.a5 Kc3 55.Qe5 Kd2 56.a6 Kc2 57.Qe4 Kb3 58.Qd3 Ka4 59.a7 Kb4 60.Qd2 Kb3 61.a8Q Kc4 62.Qad5) 52.Qb5+- Ka2 53.Kc5 Ka1 54.Kc4 Ka2 55.Kc3 Ka1 (55...Ka3 56.Qb3) 56.Qb2 1-0. FeegLood (2690) - JanKohout (1980), lichess.org, 2016.

4.e3 e4 5.d3 d5 6.Nd2 (6.de4 Ne4 7.Nd2 Qh4 8.Ne4 Qe4= (worse is 8...de4 9.Qd5+/-)) 6...Qe7 (6...a5!?= must be considered) 7.Bf6 gf6 (7...Qf6 8.de4 a5 9.Rb1+/-) 8.c4 (8.de4 de4 9.Nb3 a5+/-) 8...ed3 (8...d4 9.de4 (worse is 9.Ne4 f5 10.Ng3 de3+=) 9...de3 10.fe3+/-) 9.Bd3 (9.cd5 Qe5 10.Rc1+=) 9...d4 10.Qe2 (better is 10.e4+=) 10...Bh6? (better is 10...de3 is a viable option 11.Qe3 Qe3 12.fe3 a5 13.ba5 Ra5+=) 11.ed4+- Bd2 (11...Nc6 12.Qe7 Ne7 13.Nb3+/-) 12.Kd2 Qe2 (12...Nc6 13.Re1 Qe2 14.Ne2+- (14.Be2?! Nd4 15.Bf1 Kd8=; 14.Re2?! Kf8+/-; 14.Ke2?! Nd4 15.Kd2 Ne6+=)) 13.Ne2 Be6 14.Rhd1 Nd7 15.Nf4 0-0-0? 16.h3 Nb6 17.Ne6 fe6+/- 18.c5 Na4 19.Ke3 Nb2 20.Rd2 Na4? 21.Bc4+- Rhe8 22.Bb5 c6 23.Ba4 e5 24.d5! b5 25.Bb3 cd5 26.Rd5 f5 27.Rad1 f4 28.Ke4 Rd5 29.Rd5 Re6 30.Rd8! Kd8 31.Be6 Kc7 32.Ke5 Kd8 33.Kf4 Ke7 34.Bb3 Kf6 35.Kg4 Ke7 36.Kh5 Kd7 37.Kh6 Kc6 38.Kh7 a6 39.Kg7 a5 40.h4 a4 41.Ba2 Kd7 42.h5 Ke7 43.h6 Ke8 44.h7 Ke7 45.h8Q Kd7 46.Qh3 Kc7 47.Qe6 Kd8 48.Qf7 Kc8 49.Be6 Kb8 50.Qd7 Ka8 51.Bd5 Kb8 52.Qb7 1–0. Istratescu,Cezar – Ionescu,Cosmin, ROM–ch U10 Sovata, 2002.

4.e3 Qe7 5.c4 c6 6.Nc3 g6 7.g3 (7.Nf3 Bg7=) 7...Bg7+= 8.Bg2 0-0 9.h3 Be6 10.d3 Nbd7 11.Nf3 Nh5 (11...d5 12.cd5 Nd5 13.0-0+=) 12.0-0 f5 13.Qd2 Nb6 14.e4 fe4 15.Ne4 Bh3 16.Bh3 Rf3 17.Bg4 Ng3?? (better is 17...Rff8+=) 18.Kg2?? (18.fg3 Rf1 19.Rf1 Na4+-) 18...Rf7 (18...Nf1 19.Kf1 Rf4 20.Qe2–+) 19.Rh1?? (better is 19.fg3 Raf8 20.Rf7 Rf7 21.c5 dc5 22.Nc5+-) 19...d5 (better is 19...Nh1 20.Rh1 Rf4–+) 20.cd5?? (better is 20.Ng3 dc4 21.Be2=) 20...cd5?? (better is 20...Nh1 21.d6 Qe8 22.Rh1 Rd8–+) 21.Raf1 0–1. Fabus,Marian (1815) – Svrcek,Martin (2070), SVK–chT2C, 2006.

4.e3 Qe7 5.Nf3 Bg4 6.Be2 e4 7.Nd4 h5 8.0-0 g6 9.h3 (9.Nb5 Bg7+=) 9...Be2+= 10.Ne2 Nbd7 11.Nd4 (11.Nbc3 Bg7+=) 11...0-0-0 12.d3 d5 13.Nb5 (13.Nd2 Bg7=) 13...Kb8 (13...c6 14.Nd4=+) 14.c4 (14.Nd2!?=) 14...c6 15.Nd4 Qe5?? (better 15...Ne5 16.de4 Nc4=+) 16.Nc6!+- bc6 17.Be5 Ne5 18.d4 Nc4 19.Nd2 Nb6 (19...Nd2 20.Qd2 Rc8 21.b5+-) 20.Qb3 (20.Nb3 Be7+-) 20...Nfd7 (20...Rc8 21.Rfc1 Bd6 22.a4+-) 21.a4 a6 (21...Nf6 22.f3 ef3 23.Nf3+-) 22.b5 cb5 (22...ab5 23.ab5 Rc8 24.bc6 Rc6 25.Qb5+-) 23.ab5 ab5 (23...a5 24.Ra5 Rc8+-) 24.Qb5 Rc8 25.Rfb1 (better 25.Ra6 Kc7 26.Rc1 Kd8 27.Rc8 Kc8+-) 25...Rc7 (25...Kc7 26.Ra7 Kd8 27.Qa6+-) 26.Qd5 Kc8 (26...Rc1 27.Kh2 Rb1 28.Rb1 Kc7 29.Qf7 Bd6 30.Kg1 Rf8 31.Qg6 Rf6 32.Qh5 Be7+-) 27.Ra8! Na8 28.Qa8 Nb8 29.Rb8 Kd7 30.Rf8 (30.Qa4 Rc6 31.Rb7 Kd6 32.Qa3 Ke6 33.Qa2 Rc4 34.Qc4 Kf6 35.Qf7 Kg5 36.Qf4) 30...Rf8 31.Qf8 Ke6 32.Ne4 Kf5 33.Nc5 Rc5 (33...g5 34.Qd6 Rc5 35.dc5 f6 36.Qd5 Kg6 37.c6 g4 38.c7 gh3 39.c8Q h2 40.Kh2 Kg7 41.Qh5 f5 42.Qch8) 34.Qc5 (34.Qc5 Ke6 35.d5 Kf6 36.d6 g5 37.d7 h4 38.d8Q Kg6 39.Qcg5 Kh7 40.Qdg8) 1–0. retiponziani (1785) – clousivits (1750), ChessWorld.net, 2014.

4.e3 Ng4 5.h3 Nf2?? 6.Kf2+- Qf6 7.Nf3 Bd7 8.c4 b6 9.Nc3 e4 10.Qc2 ef3 11.Nb5 Qd8 12.Qe4 Be7 13.Qa8 a6 14.Nd4 Bf6 15.Qe4 Be5 16.Nf3 Bc6 17.Qc2 Qf6 18.d4 Bf4 19.ef4 Qf4 20.Re1 Kd7 21.Bc1 Qf6 22.Bg5 Qg6 23.Bd3 (23…Bf3 24.Bf5 Kc6 25.Bg6 hg6 26.Kf3+-) 1–0. MrkT – Dant, internet, 2005.

4.e4 Nbd7 5.d3 (5.Nc3 Be7=) 5...g6 (5...a5 6.Nd2=+) 6.Nd2 Bg7 7.Be2 Kf8 (7...Nb6 8.a4=) 8.Ngf3+= b6 9.0-0 Bb7 10.h3 h6 11.Nh2 Kg8 12.Ng4 Kh7 13.c4 Ng4 14.Bg4 Nf6 15.Nb3 (15.f4 Ng4 16.Qg4 Rf8+=) 15...c5 (15...Ng4 16.Qg4 Rf8 17.Qg3=) 16.bc5 (16.f4 Rf8+=) 16...bc5 (16...Ng4 17.c6 Bc6 18.Qg4=) 17.Bc1 (17.Be2 Nd7+=) 17...Rf8 18.Bf4?? (better 18.Bf3=) 18...ef4-+ 19.Qe2 (19.Rb1 Rb8-+) 19…Qe7. helmsknight (2475) - opperwezen (2595), lichess.org, 2018.

4.e4 Ne4 5.Qe2 f5 6.d3 +=.

4.e4 Ne4!? 5.Qe2 Nf6 –/+.

4.e4 Be7 5.Nc3 Nbd7=.

4.e4 Be7 5.d3 Nc6 6.h3 a6 7.Nf3 h6 8.Be2 Bd7 9.0-0 0-0 10.Nbd2 Nh7 11.Nc4 (11.c3 Ng5=) 11...f5 12.Nh2 (12.Ne3 fe4 13.de4 Ng5=) 12...f4 (12...a5 13.f4 ef4 14.b5=) 13.Bg4 Bg4 14.Ng4 (14.Qg4 Ng5=) 14...h5 (14...f3!?=+) 15.Nh2+= Qe8 16.c3 Bh4 (16...Qg6 17.Nf3+=) 17.Nf3+/- Qe7 18.d4 ed4 (better 18...Bf6 19.d5 Nd8+/-) 19.e5 (19.cd4 Bf6 20.e5 de5 21.de5 Bg5+/-) 19...b5 (better 19...de5!? 20.cd4 e4=) 20.ed6+= cd6 21.Nb6 Rae8 22.cd4 Opening the c-file gets White a lot of play (22.Nd4?! Nd4 23.Qd4 f3=+; 22.Nh4 Qh4 23.Qf3 Ne5 24.Qd5 Rf7 25.cd4 Nd3-/+) 22...Bf6 23.Qb3 (23.Rc1 Nd8+/-) 23...Kh8 (23...Qf7 24.Qc2 Na7 25.a4+=) 24.Nd5 (better 24.Rfc1 Qb7 25.Qd5+=) 24...Qd8?? (24...Qf7!? 25.Qa2 Ng5 26.Ng5 Bg5=) 25.Nf6?? (better 25.Nf4 d5 26.Ng6 Kg8 27.Nf8 Nf8 28.Rac1+-) 25...Nf6+/- 26.Qd3 (better 26.Rfe1+/-) 26...Ne4? (better 26...Ne7+=) 27.d5+- Nb8 28.Qd4 (better 28.Rae1!? Ng5 29.Nh4 Re1 30.Re1+-) 28...Qf6+/- 29.Rac1 Qd4 30.Bd4 Nd7 31.Rc7 Nef6 (31...Rf7 32.Re1 Ne5 33.Rf7 (worse 33.Re4 Rc7 34.Ne5 Kg8=+) 33...Nf7 34.Nh4+/-) 32.Ng5 (32.Rd1 Kg8+/-) 32...Kg8 33.Ne6 Rf7 34.Bf6 (better 34.Rc6 Nb8 35.Rd6+/-) 34...gf6? (better 34...Nf6 35.Rf7 Kf7=) 35.Nf4 (35.Rc6 Nb8 36.Rd6 f3+-) 35...Rh7? (35...Ne5 36.Rfc1+-) 36.Ra7 (36.Rc6 Re4 37.Ne6 Nf8 38.Nf8 Kf8 39.Rd6 Rd4+-) 36...Nb8 37.Rh7 Kh7 38.Nh5 Kg6 (38...Nd7 39.Rc1 Kg6 40.Nf4 Kf5 41.Ne6+-) 39.Nf4 Kf7 (39...Kf5 40.Ne6 Rc8 41.Re1+-) 40.Rc1 Re7 (40...f5 41.Ne6+-) 41.Rc8 (41.Ne6 Re6 42.de6 Ke6+-) 41...Rb7 (41...Re8 42.Rc7 Re7 43.Rc2+-) 42.Rh8 (42.Ne6 Rb6+-) 42...Kg7 43.Rd8 Nd7 44.Ne6 Kf7 45.Rh8 (45.Ra8 Kg6+-) 45...Ra7 (45...Kg6 46.g4 Rb8 47.Rb8 Nb8 48.Nc7+-) 46.f4 (46.h4 a5 47.Rh7 Ke8+-) 46...a5 47.Nd4 (47.Rh7 Ke8 48.Nd4 ab4 49.ab4 Ra1 50.Kf2 Nb6 51.Nb5 Nd5 52.Nd6 Kd8+-) 47...Kg7?! (47...ab4 48.ab4 Ra1 49.Kf2+-) 48.Re8 (48.Rd8!? Nb6 49.Rd6 Nc4+-) 48...ab4 49.ab4 (49.Nb5 Ra5 50.Re7 Kg6 51.f5 Kg5 52.Rg7 Kf4 53.Nd6 Ne5+-) 49...Nf8 (49...Nb6+-) 50.Nf5 (50.Nf5 Kg8 51.Rb8+- (worse 51.Nd6 Rd7 52.Nb5 Kf7+-)) 1-0. ramesis (2545) - vcekota (2395), net-chess.com, 2022.

4.e4 Be7 5.g3 Nc6 6.Bg2 Bg4 7.f3 Be6 8.d3 a6 9.Nd2 d5 10.Ra2? (10.Ne2 d4+=) 10...0-0 (10...de4 11.Ra1 ed3 12.cd3 Qd3 13.Qe2–+) 11.Ne2? (11.Bh3 Qc8 12.Be6 Qe6–/+ (worse is 12...fe6 13.Qa1=)) 11...d4 (11...de4 12.Ra1 ed3 13.cd3 Qd3 14.f4–+) 12.Qa1? (better is 12.Ra1!?–/+) 12...Ba2–+ 13.Qa2 a5 14.0-0? (better is 14.b5 Na7 15.f4–+) 14...ab4 15.c3 (15.a4–+) 15...ba3 (better is 15...dc3!? 16.Bc3 bc3 17.Nb1 Qd3 18.Nec3 Ba3 19.Kh1–+) 16.cd4 (16.Ba1 dc3 17.Bc3 Qd3–+) 16...ab2 17.Qb2 ed4 (17...Ba3 18.Qb7 Nd4 19.Nc3–+) 18.Ra1 (18.Qb7 Nb4 19.Qb5 Ra2–+) 18...Ra1 19.Qa1 Bc5 20.Nb3 b6 21.Nc5 bc5 22.Bh3 Ne5 23.Qf1 Nd3 24.f4 Nb4 25.Qg2 d3 26.Nc3 Qd4 27.Kf1 Qc3 28.e5 Re8 29.ef6 Re1 30.Kf2 d2 31.Qf3 Qf3 0–1. nimzou (1990) – aleandy (2245), net–chess.com, 2013. (=1.e4 e5 2.b4 Nf6 3.a3 d6 4.Bb2)

4.e4 Be7 5.g3 Ne4 6.Qe2 Nf6 7.f4–/+.

4.e4 Bg4 5.f3 Bh5 6.d4 (6.Ne2 d5=) 6...ed4 7.Bd4 Be7 8.c3 Nc6 9.Be3 Ne4 10.Qc2 Nf6 11.Nd2 d5 12.Bd3 Qd7 13.Ne2 Ne5 14.Nf4 Nd3 15.Qd3 Bg6 16.Ng6 hg6 17.Kf2 Bd6 18.g3 0-0-0 19.b5 b6 20.a4=+ Rde8 21.a5 Qe7 22.Rae1 Nh5 23.a6 f5 24.c4?? dc4?? 25.Qc4?? Qf6 26.Bd4 Qg5–/+ 27.f4 Qg4?? 28.Qc6+- Ng3?? 29.hg3 Rh1 30.Re8 1–0. slavisa99 – SirCharles, Live Game Caissa's Web, 2004.

4.f3 Nbd7 5.e3 Be7 6.g3 0-0 7.Bg2 c6 8.Ne2 a5 9.0-0 ab4 10.ab4 Ra1 11.Ba1 Qb6 12.c3 Re8 13.Kh1 (13.f4 d5=+) 13...d5-/+ Black intends e4 14.Na3 Nf8 15.Nc2 Qa6 16.d3 e4 (16...Bf5 17.e4 Bg6 18.Re1=+) 17.fe4 de4 18.d4 (better 18.de4 Bg4 19.Rf2=+) 18...Ng4?? (better 18...Bg4 19.Re1 Ra8-/+) 19.Qd2?? (better 19.Be4!? c5 20.Bd5+/- (20.bc5 Qh6 21.h4 Bh4-+)) 19...Bg5 (better 19...Qd3 20.Qe1 Qc2-+) 20.h3? (better 20.Nf4=) 20...Qd3-+ 21.Qd3 (21.Qc1 Ne3 (21...Be3?! 22.Ne3 Qe3 23.Qe1-/+) 22.Ne3 Qe2-+ (22...Qe3?! 23.Qe3 Be3 24.c4-/+)) 21...ed3 22.hg4 dc2 23.Rc1 (23.e4 Bg4 24.Nf4 Bh6-+) 23...Re3 (23...Bg4 24.Rc2 Be3 25.Bf1-+) 24.Rc2 Rd3 (better 24...Bg4!? 25.Bf1 Rd3-+) 25.Bb2 (25.Kh2 Rd1 26.Ra2 Be3-/+) 25...Bg4 26.Bc1 (26.Kh2 Ne6-/+) 26...Ne6 (26...Rd1!? 27.Kh2 Bf5-+) 27.Bg5 Ng5 28.Kh2 h5 29.Nf4 White prepares the advance d5 29...Re3 30.d5 cd5 31.Nd5 Re1 32.Rd2?? (32.Rf2 f5-/+) 32...Kh7 (better 32...Nf3 33.Bf3 Bf3-+) 33.Nf4? (33.Rd3 Rc1-/+) 33...g6 (better 33...Nf3!? 34.Bf3 Bf3-+) 34.Nd3 Rb1 (34...Re7 35.Nc5-/+) 35.Ne5=+ Kg7 (better 35...b5!?=+) 36.Ng4+= hg4 37.Rd4 (37.Bb7 Rc1=) 37...f5 (37...Nf3!? 38.Bf3 gf3-/+) 38.Rd7 (38.Bb7 Rb2 39.Kg1 Nh3 40.Kf1 f4 41.gf4 g3=+) 38...Kh6=+ 39.Rb7?? (39.Bb7 Rc1=+) 39...Rb2 (better 39...Nf3 40.Bf3 gf3 41.Rb8 f2 42.Rf8 f1Q 43.Rh8 Kg5 44.Rh5 gh5 45.g4 Qf2 46.Kh3 hg4) 40.Re7?? (better 40.Kg1=+) 40...Nf3-+ 41.Kh1 Rb1 42.Bf1 Rf1 43.Kg2 Rg1 (43...Rc1 44.b5-+) 44.Kf2 Rc1 45.Ke3 (45.Rc7-+) 45...Re1 46.Kf4 Re7 47.c4 Re4 0-1. black_bishop_88 (2535) - Sodertalje (2555), lichess.org, 2020. (=1.a3 Nf6 2.b4 d6 3.Bb2 e5)

4.f3 Be6 5.g3 Nbd7 6.Bg2 Be7 7.e3 0-0 8.Ne2 c5 9.0-0 c4 (9...Qb6!?=+) 10.f4= ef4 11.Nf4 Bg4 (11...d5 12.Nc3 Nb6 13.Qf3=) 12.Qe1 Rc8 (12...a5 13.Nc3+=) 13.h3 (13.Bb7!? Rb8 14.Bg2+/-) 13...Bf5+= 14.g4 (14.Qd1!?+=) 14...Bc2=+ 15.Bb7 Rb8 16.Bg2 Ne5 17.Nc3 (17.Qc1 Be4=) 17...Bd3 18.Nd3 Nd3 (worse 18...cd3 19.Rf4+=) 19.Qb1 d5 (19...a5 20.b5=+) 20.Ne2 (better 20.g5 Ne4 21.Ne4 de4 22.Be4=) 20...Bd6?? (20...Ne4 21.Bc3 a5-/+) 21.Nf4?? (better 21.Bf6 gf6 22.Bd5 Bh2 23.Kh2 Qd5 24.Rf5 Qd6 25.Ng3+-) 21...Bf4-+ 22.ef4 Qe7 (22...Re8 23.Bd4 a5 24.Ra2-+) 23.Bd4 (better 23.Rf3-/+) 23...Qe2?? (better 23...a5!?-/+) 24.Qd1 (24.Be3!? Ng4 25.hg4 Qg4 26.Qd1+/-) 24...Qd1 25.Rad1 Ne4 26.Be4 de4 27.f5 (27.Ba7 Ra8 28.Bc5 Rfc8= (worse 28...Ra3 29.Bf8 Kf8 30.b5+/-; 28...Nc5?! 29.bc5 Rfc8 30.Rfe1=)) 27...Rfe8 (27...a6 28.Rc1 Nc1 29.Rc1-/+) 28.Bc3 (28.f6 Rbd8 29.Ba7 Ra8=) 28...e3 (28...f6 29.Rb1-/+) 29.de3=+ Re3 30.Kg2 Rbe8 31.g5 Re2 32.Kg3 R8e3 33.Rf3 Rf3 34.Kf3 Rc2 35.Bd4 Ra2 36.f6 (36.Ra1!? Ra1 37.Ba1+=) 36...h6 37.h4 (37.gh6 Ra3 38.Ke4 gf6=+) 37...hg5 (37...Ra3 38.Ke4 Nb4 39.gh6 gf6 40.Bf6-/+) 38.hg5=+ gf6 (38...Ra3 39.Ke4 gf6 40.gf6=) 39.gf6 (39.Bf6 Kh7=) 39...Kh7 (better 39...Ra3 40.Ke4 Ra4=) 40.Rg1+/- (worse 40.Ba7 Ra3 41.Rh1 Kg6-/+) 40...Ra3 41.Rg7 Kh6 42.Ke4 (42.Kg4 Nb4 43.Bb2+-) 42...Nf2?? (better 42...Nb4 43.Rf7 Nc6=) 43.Bf2+- c3 (43...a5 44.b5 c3 45.Be3 Kh5 46.Kf5+-) 44.Be3 (44.Bg3 Ra4 45.Bf4 Kh5 46.Kf5 Ra5 47.ba5 c2 48.Rh7) 44...Kh5 45.Rf7 (45.Bf4 Ra6 46.Kf5 Rf6 47.Kf6 Kh4 48.Kf5 Kh3 49.Ke4 c2 50.Kf3 c1Q 51.Rh7) 45...c2 (45...Kg6 46.Rc7 Kf6 47.Ba7+-) 46.Rc7 (46.Kf5 Kh4 47.Bf4+-) 46...Rb3 (46...Kg6 47.f7 Re3 48.Ke3 c1Q 49.Rc1 Kf7 50.Rc7 Ke6 51.Ra7+-) 47.Rc2 (47.Kf5 Kh4 48.Bf4 Kh3 49.Rc2 Rg3 50.f7 Rg2 51.Rc3 Rg3 52.Rg3 Kh4 53.f8Q a6 54.Qh6) 47...Rb4 (47...Kg6 48.Bd4 Rb4 49.Ke5 Rd4 50.Rg2 Kh5 51.Kd4 Kh6 52.f7 Kh5 53.f8Q a5 54.Qh8) 48.Ke5 (48.Kf5 Rb5 49.Bc5 Kh4 50.f7 Rb8 51.Bd6 Rb5 52.Kf4 Kh5 53.f8N Kh6 54.Rc7 Rb4 55.Bb4 a5 56.Rh7) 48...Rb5 49.Ke6 Rb3 50.Rc5 (50.Kf5 Rb5 51.Bc5 Kh4 52.f7 Kg3 53.f8Q Rb6 54.Qg7 Rg6 55.Qg6 Kf3 56.Rf2) 50...Kg4 51.Rg5 Kf3 52.Rf5 (52.f7 Re3 53.Re5 Re5 54.Ke5+-) 52...Ke3 53.f7 (53.f7 Rb6 54.Kd7+-) 1-0. black_bishop_88 (2515) - Lola3745 (2335), lichess.org, 2020. (=1.a3 d6 2.b4 Nf6 3.Bb2 e5)

4.f3 Be7 5.e4 0-0 6.g3 a6 7.c4 c5 8.Bg2 Nbd7 9.d3 a5 10.Bc3 a4 11.g4 Nb6 12.d4 Nfd7 13.Ne2 Nc4 14.Nd2 Bh4 15.Ng3 Ne3 16.Qe2 b6 17.Qe3 Ba6 18.0-0-0 Nf6 19.Nf5 Bg5 20.h4 Be3 21.g5 Bf4 22.h5 Bg5 23.h6 g6 24.de5 Nh5 25.ed6 f6 26.Rh5 gh5 27.Ne7 Kf7 28.Nf5 c4 29.e5 Bf4 30.Re1 Re8 31.Ne7 Rf8 32.e6 Ke8 33.Bf6 Rf6 34.d7 Ke7 35.Bh3 Rh6 36.Kd1 c3 37.Bf5 Qc8 38.dc8Q Rc8 39.Ne4 c2# 0–1. nimzou (1900) – esmith (1965), net–chess.com, 2014.

4.f3 Be7 5.g3 0-0 6.h3? b6 (better 6...Nh5 7.Rh2 Ng3-+) 7.e3 Bb7 8.d3 Nbd7 9.Bg2 d5 10.Ne2 Re8 11.0-0 Bd6 12.Kh1 c5 13.e4 (13.bc5 Bc5 14.d4 ed4 15.Bd4 Ba6-/+ (worse 15...Re3 16.Be3 Be3 17.Kh2=)) 13...Qc7 (13...cb4 14.ab4 Bb4 15.Nbc3-+) 14.c4 dc4 15.dc4 (15.bc5 Qc5 16.dc4 Qc4 17.Qd6 Qe2 18.Qd2 Qd2 19.Nd2-/+) 15...Rad8 (better 15...cb4!? 16.ab4 Bb4-+) 16.b5 Nf8 17.Qc1 Ne6 18.Nbc3 Nd4 19.Nd4? (better 19.Rb1=+) 19...ed4-+ (19...cd4?! 20.Nd5 Nd5 21.cd5=+) 20.Nd5 (20.Ne2 Bg3 21.Qd2 Nh5-+) 20...Bd5 21.cd5 Bg3 (21...Nh5 22.Kg1 Ng3 23.Re1-+) 22.f4? (22.Rd1!?-+) 22...Nh5 (better 22...Qd7!? 23.e5 Nd5 24.a4-+) 23.e5 Bf4 24.d6?? (24.Rf4 Qe5 25.Rf3 Ng3 26.Rg3 Qg3 27.Qf1-+) 24...Bc1 (24...Ng3 25.Kg1 Qd7 26.Qc4 Nf1 27.Rf1 Be3 28.Kh2 Re5 29.Bc6-+) 25.dc7 Bb2 (25...Ng3!? 26.Kg1 Be3 27.Rf2-+) 26.cd8Q Rd8 27.Ra2 (27.Rab1 Ng3 28.Kg1 Nf1 29.Bf1 Bc3-+ (29...Ba3?! 30.Ra1-+)) 27...Ng3 28.Kg1 Nf1 29.Bf1 Bc3 (better 29...Bc1 30.Ra1 Bf4 31.Bc4-+) 30.Bc4 (30.Rc2 Be1 31.e6 fe6-+) 30...Kf8 (better 30...d3 31.Bb3-+) 31.Rf2 Rd7 (better 31...f6 32.Rf3 Ke7-+) 32.e6-/+ Re7 33.ef7?? (33.Rf7 Ke8-/+) 33...g6 (better 33...d3 34.Bd3 Bd4-+ (34...Rf7?! 35.Kg2-/+)) 34.Kg2 Re3?? (better 34...Rd7 35.Rf3 g5-+) 35.Rf6= d3 (35...Re2 36.Be2 d3 37.Bd3 Bf6 38.Bc4+=) 36.Rd6 Re2 37.Kf3 Bf6? (better 37...Bg7+=) 38.Rf6+- Re7 39.Rd6 (39.Bd3?! Rf7 40.Rf7 Kf7+-) 39...Kg7 (39...Rf7 40.Bf7 Kf7 41.Rd3+-) 40.Rd8 (40.Rd8 Rf7 41.Bf7 Kf7 42.Ke3+-; worse 40.Rd3 h5+-) 1-0. black_bishop_88 (2445) - StannisBaratheon (2430), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6)

4.Nf3 a5 5.b5 Bd7 6.a4 c6 7.c4 cb5 8.cb5 Bg4 9.h3 Bh5 10.g4 Bg6 11.Bg2 Be7 12.0-0 Nbd7 13.d3 h5 14.g5 Nh7 15.h4 f6 16.Nh2 Rb8 17.f4 ef4 18.Rf4 fg5 19.hg5 Bg5 20.Rf1 Qb6 21.Kh1 Nhf6 22.Nc3 Ng4 23.Qe1 Nde5 24.Nd5 Qd8 25.e4 (better is 25.b6!? Be3 26.Be5 de5 27.Nc7 Ke7 28.Nd5 Kd6 29.Ne3 (29.Qa5 Qh4 30.Qb4 Bc5 31.Qc5 Kc5 32.Rfc1 Kd6 33.Rc6 bc6 34.Bh3 Qh3 35.Kg1 Qh2 36.Kf1 Qf2) 29...Ne3 30.Qa5+=) 25...Nd3 26.Qc3 Nge5 27.Nc7 Ke7 28.Nf3 Bf6 (28...Be4?! 29.Ng5 Bg2 30.Kg2=; 28...Nb2?? 29.Ne5 Bf6 30.Ng6 Kf7 31.Nh8 Kg8 32.e5 de5 33.Rf5+-) 29.Nd5 Kf8 30.Ne5 (worse is 30.Nf6 gf6 31.Nh4 Rg8–+) 30...Ne5 31.b6 Rc8 32.Nc7 (better is 32.Qa5!? Bf7 33.Rac1 Rc1 34.Rc1=) 32...Qd7–/+ 33.Qa5 Kg8?? (better is 33...Be4 34.Be4 Qh3 35.Kg1 Qe3 36.Rf2 Ng4–+) 34.Qd5= Bf7 35.Qb7 Kh7 36.Qa6?? Qg4 37.Rac1 Qh4 38.Kg1 Ng4 39.Rf3?? Bb2–+ 40.Rc2 Bd4 41.Kf1 Nh2 42.Ke2 Qe4 43.Kd1 Nf3 44.Qe2 Qe2 45.Ke2 Ne5 46.a5 h4 47.b7 Bh5 48.Kf1 Nd3 49.a6 Rhf8 50.Bf3 Rf3 51.Kg2 Ne1 52.Kh1 Rh3 53.Rh2 Bf3 0–1. marinscrofan (1785) – nextdoor (1655), gameknot.com, 2013.

4.Nf3 a5 5.e3 ab4 6.ab4 Ra1 7.Ba1 Be7 8.d3 (8.Nc3 0-0=+) 8...0-0 9.Be2 h6 (9...Na6 10.c3=+) 10.b5 (10.0-0 Na6=+) 10...Be6 (10...c6 11.bc6 bc6 12.Nbd2=+) 11.c4 Nbd7 12.0-0 c6 (12...Nb6 13.Qc2=) 13.Nc3 Qa5 14.Qa4 (14.Qc2 Qc7=) 14...Ra8 (14...Qa4 15.Na4 cb5 16.cb5=+) 15.Qa5= Ra5 16.Bb2 Nc5 (16...g5 17.h3=) 17.Rb1 (17.d4 e4 18.dc5 ef3 19.Bf3 dc5 20.bc6 bc6 21.Bc6 Bc4=) 17...Bf5 18.Ne1 (18.e4 Bd7=) 18...d5 (18...Nb3 19.Rd1=+) 19.bc6 bc6 20.cd5 cd5 21.Ra1 Ra1 22.Ba1 Nb3 Black prepares d4 23.Bb2 d4 24.ed4 (24.Na4 de3 25.fe3 Bd6=) 24...Nd4 25.Bd1 Bb4 26.Kf1 Nd7 (26...Bc5 27.Ne2=+) 27.Nd5 (27.Ne2 Ne2 28.Be2 f6=) 27...Be1 (27...Bc5 28.Ne3 Bg6 29.N3c2=) 28.Ke1 (28.Ne7!? Kh7 29.Nf5 Bf2 30.Nh6 Kh6 31.Kf2=) 28...Bd3=+ 29.Ne7 (29.Nb4 Bc4=+) 29...Kf8 30.Bd4 (30.Nc8 g5=+) 30...ed4-/+ 31.Nc6 Be4 32.Nd4 Bg2 33.f4 Bd5 34.Kf2 Nf6 35.Nf5 h5 (35...Be4 36.Nd6-/+) 36.Ne3=+ Be6 (36...Be4 37.f5=+) 37.f5 Bd7 (37...Ba2 38.Kg3=+) 38.Kg3 g6 39.fg6 fg6 40.Kf4 Kg7 41.h4 Be6 42.Kg3 (42.Ke5 Bc8=+) 42...Kh6 (42...Ne8 43.Bf3=+) 43.Ng2 (43.Kf4 Nd7=+) 43...Ne4 (43...g5 44.Ne3=+) 44.Kf4 Nc3 45.Bf3 (45.Bc2 Bd5 46.Ne3 Bc6=+) 45...Bd5 46.Ne3 Bf3 47.Kf3 Kg7 48.Kf4 Kf6 49.Nc4 (49.Nc2 Nb5=+) 49...Nd5 (49...Ne2 50.Kf3 Nd4 51.Kg3 Nf5 52.Kh3-/+) 50.Kg3 (50.Ke4 Nc7=+) 50...Ne7-/+ 51.Ne3?? (better 51.Kh3-/+) 51...Nf5-+ 52.Nf5 (52.Kf2 Ne3 53.Ke3-+) 52...Kf5 (better 52...gf5 53.Kf4 Ke6-+) 53.Kf3= Ke5 54.Ke3 Kd5 55.Kd3 Ke5 56.Ke3 Kf5 57.Kf3 Kf6 58.Kf4 Kf7 59.Kg5 Kg7 60.Kf4 Kf6 61.Ke4 Kf7 62.Kf4 Ke6 63.Kg5 Kf7 64.Kf4 Kf6 65.Ke4 g5 66.hg5 Kg5 67.Kf3 Kh4 68.Kg2 Kg4 69.Kh1 h4 70.Kg1 Kg3 71.Kh1 h3 72.Kg1 Kg4 73.Kh1 Kh4 74.Kg1 Kg3 75.Kh1 h2 ½-½. ZibbitVideos (2485) - MattyDPerrine (2410), Rated Bullet game, lichess.org, 2015.

4.Nf3 a6 5.e3 Nc6 6.c4 Bf5 7.Be2 Be7 8.d3 e4 9.de4 Ne4 10.Nbd2 Nd2 11.Qd2 (worse is 11.Kd2 Bf6 12.Qb3 0-0+=) 11...Bf6 12.Bf6 Qf6 13.0-0 0-0 14.Nd4 Ne5 15.Nf5 Qf5 16.Rfd1 Rad8 17.Bd3 Nd3 18.Qd3 Qd3 19.Rd3 Rfe8 20.Rad1 Re4 21.c5 Rc4 (21...Re6 22.h3+=) 22.cd6 cd6 23.Rd6?? (better is 23.Kf1 Rc6 24.Rd5+=) 23…Rd6–+ (23...Rd6 24.Rb1 Rd3–+) 0–1. Fournier,Frederic (1935) – PACOTAL (1770), Active (5/0), 2004.

4.Nf3 b6 5.e3 Bb7 6.Be2 Nbd7 7.0-0 Be7 8.c4 0-0 9.d4 e4 10.Nh4 c6 11.f3 d5 12.fe4 Ne4 13.Nf5 Bg5 14.Rf3 Re8 15.Qe1 g6=+ 16.Ng3 Bh4 17.Nd2 Ndf6 18.Rf4 Nh5 19.Bh5+= Nd2 20.Qd2 Bg3 21.hg3 gh5 22.Qe2 dc4 23.Qh5 Qd5 24.Rf5 Qe6= 25.Rg5 Kf8 26.Rf1 Re7 27.Qh7?? Qe3–+ 28.Kh2 Qg5 29.d5 cd5 30.Qh8+- Qg8 31.Bg7 Ke8 32.Qg8 Kd7 33.Qh7 Rae8 34.Qf5 Kc7 35.Qf4 Kc8 36.Qf5?? Kc7 37.Bf6 Re6 38.Bg5 c3 39.Qf7 Kc8 40.Qf5 d4 41.Re1 Bd5 42.Re6 Be6 43.Qe5 c2 44.Bf4 (44…Re7 45.Qb8 Kd7 46.Qa7 Ke8 47.Qa4 Rd7 48.Qc2+-) 1–0. von Herman,A – Gunther,K, 2.DBLNO, 1993.

4.Nf3 Nc6 5.e3= Bg4 6.Bb5 e4–/+ 7.h3 Bf3 8.gf3+= a5 9.fe4 ab4 10.Qf3 Be7 11.ab4+/- 0-0 12.Ra8 Qa8+= 13.Bc6 bc6. Fritz 5.32 – Comet B25, 2004.

4.Nf3 Be6 5.e3 Nbd7 6.c4 Be7 7.Be2 c6 8.0-0 d5 9.cd5 cd5 (9...Bd5 10.Nc3 Bf3 11.Bf3=) 10.Nc3 (10.Ne5!? 0-0 11.f4+/-) 10...a6 11.d3 Rc8 12.Rc1 0-0 13.Qd2 e4 14.de4 de4 15.Nd4 (15.Ng5!?+/-) 15...Qb6 16.Ne6 Qe6 17.Na4 Rfd8 18.Rc8 Rc8 19.Rc1 Rc1 20.Qc1 h6? (20...b5 21.Qc8 Nf8 22.Qe6 Ne6 23.Nb6=) 21.Bd4 (21.Qc8 Kh7 22.Qb7 a5 23.ba5 Qf5+-) 21...Ne5 (21...Bf8 22.Qc8 Qa2 23.Nc3 Qa3 24.Qb7 Bb4 25.Ne4 Qc1 26.Bf1+=) 22.Nc5 (22.Qc7 Nc6 23.Bf6 Qf6 24.Qb7 a5 25.Qa8 Nd8 26.Qe4 ab4 27.ab4 Ne6+-) 22...Qd5? (22...Bc5 23.bc5 Nc6 24.Bc4 Nd4 25.ed4+=) 23.Qb2 (23.Nb7!? Qb7 24.Be5 Ne8+-) 23...Nc4 24.Qc3 Bc5?? 25.Bc5?? b5 26.g3 Nd7 27.Bd4 g6 28.Bh8 Nde5 29.Be5 Ne5 30.Qc8+= Kg7 31.Qa6 Nf3 32.Kg2 Qg5? 33.Qb5+- (33.Bf3?! ef3 34.Kf3 Qf5 35.Ke2 Qc2 36.Kf1 Qd3 37.Kg2 Qe4 38.f3 Qc2 39.Kf1 Qd3 40.Kg1 Qd1 41.Kf2 Qd2 42.Kf1 Qd3 43.Kf2 Qd2 44.Kf1 Qd3=) 1–0. Fournier,Frederic (2030) – sarraceno (1865), Active (7/0), 2004.

4.Nf3 Bf5 5.c4 Nbd7 6.e3 Be7 7.Be2 c6 8.0-0 Qc7 9.Nc3 0-0 10.d3 e4 11.de4 Ne4 12.Ne4 Be4 13.Bd3 Bd3 14.Qd3 Bf6 15.Bf6 Nf6 16.Rfd1 Rad8 17.Rd2 Rfe8 18.Rad1 Ne4 19.Re2 d5 20.cd5 Rd5 21.Qc2? (21.Nd4 Rh5 22.h3 a5=) 21...Qd8?? (better is 21...Rd1 22.Qd1 Nc3–+) 22.Nd4 Qg5 23.f3 Nf6 24.e4 Rdd8 25.Qd2 Qe5 26.Qe3 (better is 26.Qc3!?=) 26...Nd5–/+ 27.Qb3?? (27.Qd2 Nf4 28.Re3–/+) 27...Nf4–+ 28.Red2 Rd4! 29.Rd4 Ne2 30.Kf2 Nd4 31.Qc3 Rd8 32.Ke3 Nf5 33.Ke2?? Qb5–+ 34.Ke1 Rd1 35.Kd1 Qf1 36.Kc2 Qg2 37.Kb3 Nh4 38.Qd4 Qf3 39.Ka4 Ng6 40.h4 Qe2 41.h5 Qc2 42.Ka5 b6 43.Ka6 Qa4 44.Kb7 Nf8 45.Qd3 c5 46.bc5 bc5 47.e5 Qd7 48.Ka6 Qd3 49.Ka5 c4 50.Kb4 c3 51.Kb3 c2 52.Kb4 c1Q 53.e6 Qcc3 54.Ka4 Qdc4 (54...Qa3) 0–1. Fournier,Frederic (1970) – Cacarote2001 (1920), Active (5/0), 2004.

4.Nf3 Bf5 5.e3 Nbd7 6.Nc3 Be7 7.Be2 0-0 8.0-0 c5 9.bc5 dc5 10.Bc4 e4 11.Ng5 Ne5 12.Be2 Qb6 13.Rb1 Qc6 14.f3 ef3 15.Nf3 Ng6 16.Ng5 Bd7 17.Bb5 Qc7 18.Bd7 Qd7 19.h3 Rad8 20.Nf3 a6 21.Ne2 b5 22.Ba1 Qe6 23.a4 ba4 24.Qc1 Ne4 25.d3 Nf6 26.g4 Ra8 27.Ng5 Qd5 28.Bf6 Bf6 29.Ne4 Be5 30.Qa3 c4 31.Rb4 cd3 32.cd3 Rab8 33.Rfb1 Rb5 34.Nc1 Bd6 35.Rb5 Qb5 36.Qa2 Qe5 37.Qc2 f5 38.gf5 Qf5 39.Qc4 Kh8 40.Na2 Qh3 41.Nd6 Qe3 42.Kh1 Qh3 43.Kg1 Qg3 44.Kh1 Qd6 45.Qa4 Rf2 0–1. Delfi 1.40 – Beowulf15s, Computer chess game, 2001.

4.Nf3 Bf5 5.e3 Nbd7 6.c4 c6 7.d3 Qc7 8.Nbd2 Be7 9.Be2 0-0 10.0-0 d5 11.c5 b6 12.cb6 ab6 13.Re1 c5 14.bc5 bc5 15.h3 Ne8 (15...Rfb8!? 16.Qc2 e4 17.de4 de4 18.Bf6 Bf6+=) 16.e4+= Be6 17.Nb3 (17.ed5!? Bd5 18.Ne5 Ne5 19.Be5 Qe5 20.Bf3+=) 17...f6 (17...de4!? 18.Nfd2 Rb8 19.de4 Bb3 20.Nb3 c4 21.Bc4 Qc4 22.Qd7 Rb3 23.Qe7 Rb2 24.Qe5 Qb3–/+) 18.Rc1 Qb7 19.Qc2 (better is 19.Nfd2!?+=) 19...Rb8 20.Bd1 (20.Nfd2 de4 21.Bg4 f5–+ (21...Bb3?! 22.Nb3 f5 23.Qc4 Kh8 24.Bd1–+)) 20...de4 21.Nc5?? (better is 21.Nfd2 Nd6 22.Ba1 ed3 23.Qd3–+) 21...Nc5 (21...Qb2?! 22.Ne6 Qc2 23.Rc2 ef3 24.Bf3 Ba3 25.Ra1–+; worse is 21...Bc5 22.d4 Ba7 23.Ba1 ef3 24.Bf3–+) 22.de4 Qb2 23.Qb2 Rb2 (23...Rb2 24.Rc3 Nc7–+) 0–1. Fournier,Frederic (1975) – argoma (1915), Echecs21 (6/0), 2003.

4.Nf3 Bg4 5.e3 Nbd7 6.Be2 Be7 7.h3 Bh5 8.0-0 0-0 9.d3 Bg6 10.Nbd2 c6 11.e4 Qc7 12.c4 Rac8 13.Qb3 h6 14.Rac1 a6 15.a4 Qd8 16.b5 ab5 17.ab5 Nc5 18.Qb4 cb5 19.cb5 Re8 20.Nc4 (20.Nb3 Bh5=) 20...Ra8 (20...d5 21.Nce5 Nd3 22.Rc8 Qc8–/+ (22...Nb4?! 23.Rd8 Bd8 24.ed5=)) 21.Ra1 Qc7 (21...Ra1 22.Ra1 d5 23.ed5 Nd3+= (worse is 23...Bd3 24.d6 Be2 25.Qc5 Bc4 26.de7=)) 22.b6= Qc6 23.Ra8 Ra8 24.Ra1 Ra1 25.Ba1 Nh5 26.g3 Ne6?? (26...Nf6 27.Nh4=) 27.Qb3?? (27.Nfe5 de5 28.Qe7 f6+-) 27...Nd4?? 28.Nd4+- ed4 29.Bd4 Bf6 30.Bf6 Nf6 31.Bf3 Nd7 32.Kg2 Nc5 33.Qc3 Na4 34.Qd4 Nc5 35.Qd6 Qd6 36.Nd6 Nd3 37.Nb7 Ne5?? 38.Nd6 Nd7 39.b7 f6 40.Bg4 Nb8 41.Bf5 Bf7 42.Nf7 Kf7 43.f4 Ke7 44.Bc8 Kd6 45.Kf3 Kc7 46.g4 Nc6 47.h4 Na5 48.g5 Nb7 49.Bb7 Kb7 50.gh6 gh6 51.Kg4 Kc7 52.Kf5 Kd7 53.Kf6 Ke8 54.Kg6 Kf8 55.Kh6 (55.Kh6 Kf7 56.e5+-) 1–0. Fournier,Frederic (1855) – alfilrey (1785), Active (5/0), 2004.

4.Nf3 Bg4 5.e3 Bh5 6.Be2 Bg6 7.c4 Be7 8.0-0 0-0 9.d3 Re8 10.Nbd2 b6 (10...Bh5 11.Ng5 Bg6 12.f4 ef4 13.Rf4=) 11.d4 (11.Nh4 c6+/-) 11...c5 (11...ed4!? 12.Nd4 c5+/-) 12.de5+/- Ne4 13.Ne4 Be4 14.ed6 Bd6 15.b5 a6 16.a4 Be5?? (better is 16...ab5 17.cb5 Re7+/-) 17.Be5+- Qd1 (17...Nd7 18.Bc3+-) 18.Rfd1 (worse is 18.Bd1 Bd3 19.Re1 Bc4 20.ba6 Nc6+-) 18...Re5 (18...ab5 19.ab5 Ra1 20.Ba1 Bf5+-) 19.Rd8 (19.Rd8 Re8 20.Re8) 1–0. Fournier,Frederic (1985) – mellch (1895), Active (5/0), 2004.

4.Nf3 Bg4 5.e4 Nc6 6.Be2 Ne4 7.d4 ed4 8.Nd4 Be2?? 9.Ke2?? Nd4 10.Bd4 Qe7 11.Re1? Nc3–+ 12.Kd2 Nd1 13.Re7 Be7 14.Kd1 0-0 15.Nd2 c5 16.Nf3 cd4 17.Nd4 Rfe8 18.Ke1 Bf6 (19.Kf1 Bd4–+) 0–1. bambinik – Sheeplord, 2003.

4.Nf3 Bg4 5.h3 Bf5 6.d3 Be7 7.e4 Bd7 8.c4 0-0 9.Be2 Ne8 10.Nc3 f5 11.0-0 Be6 12.d4 ed4 (better is 12...fe4!? 13.Ne4 Rf4+=) 13.Nd4+- (13.Qd4?! Nc6 14.Qd3 a5 15.ef5 Rf5+=) 13...Bd7 14.ef5 Bf6 15.Ne6 Be6 16.fe6 Nc6 17.Ra2 Qe7 18.Nd5 Qe6 19.Bf6 gf6 20.Re1 Qd7 21.f4 Qg7 (21...a6 22.b5 ab5 23.cb5+-) 22.Bh5 f5 23.Be8 (better is 23.b5!? Qd4 24.Qd4 Nd4 25.Be8 Rae8 26.Re8 Re8 27.Nf6 Kf7 28.Ne8 Ke8 29.Kf2+-) 23...Rae8+/- 24.Rae2 Re2 25.Re2 a6 26.Kh2 h6 27.Re3 Qf7? 28.Qd3 Kh8? 29.b5 ab5 30.cb5 Nd8 31.Re7 Qg6 32.Qc3 Kg8 33.Rc7 (33.Rc7 Rf7 34.Rc8+-) 1–0. Fournier,Frederic (1880) – Vignier,Pascal (2040), FRA Ch (Team) N3 Senlis–Chelles, 2009.

4.Nf3 h6 5.e3 a6 6.Nc3 b5 7.d3 g6 8.a4 c6 9.e4 Bd7 10.d4 Qe7 11.ab5 cb5 12.Nb5! Bb5 (12...ab5 13.Ra8) 13.Bb5+- Nbd7 14.Bc6 Ra7 15.0-0 Ng4 (15...Bg7 16.de5 de5 17.Ne5+-) 16.h3 h5 17.hg4 (Better is 17.b5 Qd8 18.de5 Nge5 19.Ne5 de5 20.Be5 f6 21.Bf6 Qf6 22.Ra6 Rc7 23.Bd7 Rd7 24.Rf6 Rd1 25.Rd1 Bb4+-) 17...hg4 18.de5 gf3 19.ed6 Qh4 20.Bh8 g5 21.Bd4 g4 22.e5 fg2 23.Bg2 g3 24.fg3 Qg3 25.Ba7 Ne5 26.Re1 f6 27.Qh5 Kd7 28.Qf5 Ke8 29.Qe6 Kd8 30.Bb6# 1–0. kamret (2210) – jan_p, GameColony.com, 2003.

4.f4 Nbd7 5.fe5 de5 6.Nf3 e4 7.Nd4 c5 8.bc5 Bc5 9.e3 Qb6 10.Bc3 0-0 11.Be2 Ne5 12.0-0 Bd6 (12...Nd5 13.Nb5 Nc3 14.N5c3-/+) 13.Nf5 Re8 (13...Bf5 14.Rf5 Qc7 15.Qe1=+) 14.Nd6 Qd6 15.Bd4 Neg4 (15...Bg4 16.Nc3 Be2 17.Qe2=) 16.g3 (16.Rf4 h5 17.Bg4 Ng4= (worse 17...Bg4 18.Qf1+/-)) 16...a6 (16...Qd5 17.Nc3 Qh5 18.Bg4 Ng4 19.Qe2=) 17.Nc3 Bd7 (17...Ne5 18.Rf4=) 18.a4 Rac8 (18...Ne5 19.Rb1 Bc6 20.Rf4=) 19.Rf4 Ne5 20.Qf1 Bc6 21.a5 Ng6 (21...Re6 22.Qh3=) 22.Rf6 (22.Rf5!?+=) 22...gf6= 23.Qf6 Qf6 24.Bf6 Re6 25.Bd4 f5 (25...Ne5!?=) 26.Rf1 (better 26.Bc4 Kf7 27.Rf1+-) 26...Rf8? (better 26...Ne5+=) 27.Bc4+- Kf7 (27...Bd7+-) 28.Rf5 Ke7 29.Be6 (29.Bc5!? Rd6 30.Rh5 Rh8+-) 29...Ke6 30.Rf8 Nf8 31.Ne2 (31.d3!? Ng6+-) 31...Nd7 32.Nf4 Kf5 (32...Kd6 33.d3+-) 33.h3 Nf8 (33...Kg5 34.g4 Kh4 35.Kh2+-) 34.g4 Kg5 35.Kg2 h5 36.gh5 (36.Bg7!? Nh7 37.Nh5 Kg6+-) 36...Ng6 (36...Bd7+-) 37.hg6 (37.hg6 Be8 38.g7+-) 1-0. black_bishop_88 (2535) - Ruslan_Sezdbekov (2490), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6)

4.f4 Be7 5.fe5= de5 6.Be5 Nbd7 (6...Ng4 7.d4=+) 7.Bb2 0-0 8.Nf3 a5 9.b5 c6 10.g3 (10.e3!?+=) 10...cb5= 11.Bg2 Re8 12.0-0 b4 13.ab4 Bb4 14.Kh1 Nf8 15.Nc3 Ng6 16.Nb5 Bc5 (16...Nd5 17.Nbd4=) 17.Nbd4 (better 17.Bf6!? gf6 18.d4+/-) 17...Qb6 18.e3?? (better 18.Ra2=) 18...Qb2-+ 19.c3 Qb6 20.Qa4 Bd4 (20...Bd7 21.Qc2-+) 21.cd4 (21.Nd4 Rd8-+) 21...Bd7 22.Qa2 Be6 23.Qa3 Bd5 24.Rfb1 Qc7 25.Rc1 Qe7 26.Qb2 h5 (26...a4 27.Rc5-+) 27.Qb6 (27.Ra4 Qd7 28.Qa3 h4 29.Nh4 Nh4 30.gh4 Bg2 31.Kg2 Qg4 32.Kf1 Qf3 33.Kg1 Re4-+) 27...a4 28.Rc7 Qd8 29.Qc5 Bc6 30.Rc6 bc6 31.Ng5 (31.Qc6 a3-+) 31...Qe7 (better 31...Ra5 32.Nf7 Kf7 33.Qc4 Re6 34.Ra4 Ra4 35.Qa4-+) 32.Qc4 White prepares d5 (32.Bc6 Rac8 33.Qb5 Rb8 34.Qa4 Rec8-+) 32...a3 33.Bc6 Rec8 34.d5 (34.Qb5 Ra7 35.Bg2 h4-+) 34...Ne5 (better 34...Qe5 35.Qd4 Qg5 36.Bb7-+) 35.Qc3 (35.Qb5 Nc6 36.dc6 Ng4-+) 35...Nc6 36.dc6 Ra6 (better 36...Nd5 37.Qd3 Qg5 38.Ra3 Ra3 39.Qa3-+) 37.Ra3 (37.Qb3-+) 37...Ra3 38.Qc4 Ra1 39.Kg2 Qc7 40.Qd4 (40.e4 Ng4 41.Nf3 Qb6-+) 40...Qc6 41.e4 Qc5 (41...Qc1 42.Qf2 Rd8 43.Nf3 Ne4 44.Qe2-+) 42.Qc5 (42.Qa1 Qg5 43.Qd1 Rd8-+) 42...Rc5 43.d4 Rc2 44.Kf3 Rd2 (44...Ng4 45.e5 Re1 46.Ne4 Rce2 47.Kf4 Re4 48.Kg5 Nh2 49.g4 Nf3 50.Kf5 Rd4 51.gh5 Re5) 45.Kf4 Raa2 (45...Ng4 46.Nh3-+) 46.Ke5 Rf2 (46...Ng4 47.Kd6 Ra6 48.Kd5 Ne3 49.Ke5 f6 50.Kf4 Ng2 51.Kf5 Rf2 52.Nf3 Rf3 53.Kg6 f5 54.Kg5 fe4 55.d5 Kf7 56.Kh5 Rg6 57.d6 Rf5) 47.d5 (47.h4 Ra4 48.d5 Ne8-+) 47...Nd7 (47...Rh2 48.Kd6-+) 48.Kd6 Ra4 (better 48...Ra7 49.Ke7 f6-+) 49.Nf7 (49.Kd7 Rh2 50.e5 Ra7 51.Kd6 Rd2-+) 49...Re2 (49...Ra6 50.Kd7 Rf7 51.Ke8 Ra8) 50.Kd7 (50.Nh6 gh6 51.Kd7 Rae4-+) 50...Kf7 51.Kd6 Kg8 (51...Ree4 52.h3 Re3 53.g4 Rh3 54.g5-+) 52.e5 Re3 53.e6 1-0. black_bishop_88 (2520) - Juan_Moreno (2400), lichess.org, 2020. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6)

4.f4 ef4 5.Nf3 Be7 6.Nc3 0-0 7.d3 c6 8.Qd2 d5 (8...Nh5!?-+) 9.Qf4-/+ Nbd7 (9...a5 10.ba5 Bd6 11.Qd2-/+) 10.g3 (10.e4 a5 11.e5 Qc7=+) 10...Nb6 11.Bg2 Qd6 12.Qd6 Bd6 13.0-0 Re8 14.Rae1 a5 15.b5 Bd7 16.e4 (16.bc6 bc6 17.e3 Rab8=+) 16...de4-/+ 17.de4 Ng4 18.bc6 Bc6 19.h3 (19.Nd5 Nd5 20.ed5 Bd5 21.Re8 Re8-+) 19...Bc5 20.Kh1 Ne3 21.Rf2? (21.Nd2 Nf1 22.Rf1 Be3-+) 21...Ng2 (better 21...Nec4 22.Rff1 Nb2-+) 22.Rg2 Nc4 23.Bc1 Na3 24.Ba3 Ba3 25.Rge2? (25.Nd5-+) 25...Bb4 26.Re3 a4 27.Ra1 a3 (27...f5!? 28.Nd4 Bc5 29.Rd3 fe4 30.Rdd1-+) 28.Nd4 Bd7 (28...Bc5!? 29.Rd3 Be4 30.Ne4 Re4 31.Nb3-+) 29.Nd5 Bc5 30.Rd3 Rac8 31.Nb3 Bf8 32.Nd2 (32.Nf6 gf6 33.Rd7 Rc2 34.Rb7 Re4-+) 32...Bb5 33.c4 (33.Rc3 Rc3 34.Nc3 Bc6-+) 33...Bc4 34.Nc4 Rc4 35.h4 (35.Nc3 Re5-+) 35...Rce4 36.Kh2 Re2 37.Kh3 Re1 38.Ra2 R1e2 (38...R8e2 39.Re2 Re2 40.Rd1-+) 39.Raa3?? (39.Ra1 f5 40.Rb3-+) 39...R2e5 (better 39...Ba3 40.Ra3 f5-+) 40.Rab3=+ R5e6 (40...Re1 41.Rb7 f5 42.Rf3=+) 41.Nf4 (41.Nc7 R8e7 42.Ne6 fe6+/-) 41...h6?? (better 41...Rd6 42.Rb7 Rd3 43.Nd3 g6-/+) 42.Ne6+/- Re6 (42...fe6 43.Rb7 Kh7 44.Kg4+/-) 43.Rb7 Kh7 (43...Bd6 44.h5+/-) 44.Rf3 (44.Rf7 Be7+-) 44...Bd6 (better 44...f6!?+/-) 45.Rff7+- Rg6 46.Rg7?? (better 46.g4+-) 46...Rg7-+ 47.Rg7 Kg7 48.g4 Kg6 49.h5 (better 49.Kg2-+) 49...Kg5 50.Kg2 Kg4 (better 50...Kf4-+) 51.Kh1 Kh5 52.Kg2 Kg5 53.Kh1 h5 54.Kg1 Kg6 55.Kh1 Be5 56.Kg1 Bf6 57.Kh1 Bg5 58.Kg1 Kf5 59.Kh1 Kg4 60.Kg1 Bf4 61.Kh1 Be3 62.Kg2 Bd4 63.Kh1 Bc5 64.Kg2 Bd6 65.Kh1 h4 0-1. black_bishop_88 (2545) - For_Fun_Only (2490), lichess.org, 2020. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6)

4.f4 ef4 5.Nf3 Be7 6.c4 Bf5 7.Nc3 Nc6 8.g3 fg3 9.hg3 d5 (9...Ne5!? 10.Ne5 de5-/+) 10.cd5=+ Nd5 11.Bg2 (11.b5 Nb8=+) 11...Nc3 12.Bc3 Qd7 (better 12...Qd6 13.Kf2 0-0-/+) 13.b5= (worse 13.Bg7 Rg8 14.Bc3 Rg3-/+) 13...Nd8 14.Qa4 0-0 15.0-0-0? (better 15.Ne5!? Qc8 16.g4=+) 15...c6-+ 16.bc6 bc6 (16...Nc6 17.Rdf1-/+) 17.Ne5 (17.g4!? Bg6 18.Ne5-/+) 17...Qe6-+ 18.Nc6?? (better 18.e4 Qa2 19.Rdg1-+) 18...Rc8 (18...Nc6 19.Kb2 Rab8 20.Ka1-+) 19.Nd4?? (better 19.Bd5 Qd6 20.Ne7 Qe7 21.Rdf1=+) 19...Qg6 (better 19...Qa2 20.Nf5 Ba3 21.Qa3 Qa3 22.Kc2 Qa2 23.Kd3 Qc4 24.Kc2 Qa4 25.Kc1 Re8-+) 20.Nf5+- (20.Qa7 Be4 21.Be4 Qe4=+) 20...Qh6?? (20...Qf5 21.Be4 Rc3 22.dc3 Qg5 23.Rd2 h6+/-) 21.Be4 (better 21.Ne7 Kh8 22.Rh6 Rc3 23.dc3 gh6 24.Qh4 Kg7 25.Nf5 Kg6 26.Qh6 Kf5 27.Rd5 Kg4 28.Qg5) 21...Rc3 22.Kb2 Qb6 23.Kc3 Bf6 24.d4 Ne6 25.Qc6 (25.Qb4!? Qc7 26.Kd3 Rd8+-) 25...Qa5 (25...Qc6 26.Bc6 Rc8+-) 26.Kb2 Rb8 27.Ka2 Bd4 (27...Nc5 28.Ne7! Be7 29.Bh7 Kf8+-) 28.Nd4 Qa4 (28...Ng5 29.Qc2 g6+-) 29.Bh7 Kf8 30.Qd6 (30.Ne6 fe6 31.Qd6 Kf7 32.Rhf1 Qf4 33.Rf4 Ke8 34.Qe6) 30...Ke8+- 31.Qb8 (31.Qb8 Ke7 32.Ne6 Qc4 33.Kb1 Qd3 34.Rd3 f5 35.Qd6 Kf6 36.Nd8 Kg5 37.Qg6) 1-0. black_bishop_88 (2510) - Maddmitreg (2300), Ukrainian Bullet League, lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6)

4.g3 Nc6 5.Bg2 Be7 6.e3 0-0 7.Ne2 Bg4 8.0-0 Nd5?? 9.c4 Be2 10.Qe2+/- Nf6 11.Nc3 Re8 12.Rfd1 a6 13.Bc6 bc6+= 14.Qf3 d5= 15.d3 d4 16.ed4 ed4 17.Ne2 c5=+ 18.bc5 Bc5 19.Rab1 Qe7?? 20.Nd4+/- Bd4 21.Bd4 Rac8 22.Kf1 Qd6 23.Bf6 Qf6 24.Qf6 gf6 25.h4 h5 26.Kg2 Kg7 27.d4 Kg6 28.d5 Re7 29.c5 Rd7? 30.c6 Rd6 31.Rd4 Re8? 32.Rb7+- Re7 33.Ra7 f5 34.Kf3 Re5? 35.Rc7 Red5 36.Rd5 Rd5 37.Rd7 Rc5 38.c7 Rc3? 39.Kf4+- f6 40.Rd6 Rc7+/- 41.Ke3 Re7 42.Kd3 Ra7 43.Kd4 f4 44.gf4 a5 45.Rd5+/- a4 46.Kc4 Rc7 47.Kb4 Rc2 48.Ka4 Rf2 49.Kb5 Rf4 50.a4 Rh4 51.a5 f5 52.a6+- Rh1?? 53.a7 Ra1 54.Rd7 h4?? 55.Kb6 Kg5 56.Rd8 f4?? 57.a8Q Ra8= 58.Ra8 h3 59.Kc5 Kg4 60.Rg8 Kf3 61.Kd4 Kf2 62.Ke4 f3 63.Kf4 h2 64.Rh8 Kg2 65.Rg8 Kf2 66.Rh8 ½–½. coloplayah (2175) – gregdere (1890), net–chess.com, 2007.

4.g3 Bd7 5.Bg2 Bc6 6.Nf3 Nbd7 7.0-0 g6 8.c4+= b6 9.d4 Bg7 10.d5 Bb7+= 11.Nc3 0-0 12.Rb1 Qe7 13.e4 Rab8 14.Re1 Nh5 15.a4 Rbe8 16.Bc1 Bc8 17.Be3 f5 18.Bg5 Qf7+= 19.Nb5 fe4= 20.Re4 Ndf6 21.Bf6 Bf6 22.Na7 Bf5–/+ 23.Nd2 Be4 24.Ne4= Bg7 25.Nc6 Nf6?? 26.Qe2 Ne4= 27.Be4 Qd7 28.a5 Ra8 29.Ra1 ba5 30.ba5 Rf7 31.a6 Raf8 32.f3 Qh3 33.a7 Ra8 34.Nb8 h5 35.c5 h4 36.g4 Bh6+= 37.cd6 cd6 38.Nc6 Rb7 39.Bg6+/- Rb3 40.Rb1?? Be3=+ 41.Kh1 Rb1 42.Bb1 Ba7 43.Qd3 e4 44.Qe2 Be3! 45.Qe3 Qf3 46.Qf3=+ ef3 47.h3? Ra1–+ 48.Kg1 Rb1 49.Kf2 Rb3 50.Ne7–/+ Kf7 51.Nf5 Kf6 52.Nh4 Ke5 53.Nf3 Kd5 54.h4 Rb2 55.Kg3 Ke6 56.h5 d5 57.Kf4 Rb4 58.Kg5 d4 59.Kg6 d3=+ 60.g5 Rf4 61.Nd2 Rf8 62.h6 Rg8–+ 63.Kh5 Kf5 64.Nf3? Rg5!! 65.Ng5 d2 66.h7 0–1. hsingletary (1765) – rsarobe (1810), net–chess.com, 2001.

4.g3 Nbd7 5.Bg2 d5 6.e3 c6 7.d3 Bd6 8.Nd2 0-0 9.Ne2 Re8 (9...a5 10.b5-/+) 10.0-0 Nf8 (10...a5 11.b5=+) 11.c4= Bg4 12.h3 Be6 (12...Bh5 13.Qe1=) 13.e4 (13.f4!? ef4 14.Nf4 dc4 15.dc4=) 13...de4=+ 14.de4 b6 (better 14...Qd7!?=+) 15.f4+= Qc7 16.f5 (16.c5 bc5 17.f5 Bc8+=) 16...Bc8 17.g4 h6 18.Ng3 a5 19.Bc3 ab4 20.ab4 Bb7 21.Qe2 (21.Qb3 Red8=+) 21...Qe7 22.Ra8 Ra8 23.Rb1 Ra3 24.Qe3 N8d7 25.Ne2 (25.Qf3 Nh7=+) 25...Bb4! 26.Bb4 (26.Rb4 Qb4; 26.Bb4 Re3 Pinning (26...Re3 Deflection)) 26...Qb4 27.Rb4 Re3 28.Kf2 Ra3 29.Rb2 Kf8 30.Nb3 (30.Bf3 Ba6-/+) 30...Ke7 31.c5 (31.Nd2 Ba6-/+) 31...b5 (31...bc5!? 32.Nbc1 Ba6 33.Ra2 Ra2 34.Na2-+) 32.Nec1-/+ Ra4 33.Nd3 (better 33.Ke3!?-/+) 33...Ne4-+ 34.Be4 Re4 35.Na5 Ba8 36.Nb4? (36.Nb3 Ra4-+) 36...Nb8 (better 36...Nc5 37.Kf1 Kd6-+) 37.Kf3 Rd4 38.Ke3 g6 39.Nd3? (39.fg6 fg6 40.Nd3-+) 39...Kf6 (better 39...gf5 40.gf5 Kf6-+) 40.fg6=+ fg6 41.Nf2? (better 41.Rf2 Ke6 42.Rf8=+) 41...Nd7 42.Ne4 Ke6 43.Nb3 Rc4 44.Rd2 Ke7 45.Rd6 Re4! 46.Ke4 Nc5! (46...Nc5 47.Ke5 Nb3 48.Rg6 c5-/+) 0-1. Sarkar,J (2365) - Popovic,Milan S (2325), Titled Tuesday 9th Mar, 2021. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.g3)

4.g3 Bg4 5.Bg2 c6 6.h3 Bh5 7.d3 Nbd7 8.Nf3 Be7 9.g4 Bg6 10.Nh4 d5 11.e4 d4 12.Ng6 hg6 13.f4 ef4 (13...c5 14.bc5 Bc5 15.Qf3=+) 14.Bd4= g5 15.0-0 c5 16.Bc3 cb4 17.ab4 Bb4 18.Bb4 Qb6 19.Kh1 (better 19.d4!? Qb4 20.e5+=) 19...Qb4-/+ 20.Na3? (20.d4 Rh4 21.Kg1 Qb6=+) 20...a6 (better 20...Ne5!?-+) 21.Nc4 0-0-0?? (better 21...Rh4-/+) 22.e5+= Ng4?? (better 22...Ne4! 23.Be4 Ne5 24.Ne5 Rh3 25.Kg1 Rg3 26.Bg2 Qd4 27.Rf2 Qe5+=) 23.Qg4+- Qc5 (23...Qe7 24.Rfb1 Rh6 25.Nd6 Rd6 26.ed6 Qd6 27.Bb7 Kc7 28.Ra6+-) 24.Nd6 (worse 24.Qg5 f6 25.Qg4 fe5+-) 24...Kc7 25.Nb7 Qa7 (25...Qe5 26.Ra6 Nf6 27.Rc6 Kb8 28.Nd8 Rd8 29.Rb1 Ka7+-) 26.Nd8 Kd8 (26...Rd8 27.Qg5 Re8 28.Rf4 Re5 29.Qg7+-) 27.Qg5 Kc7 (27...Ke8 28.Qg7 Rf8 29.Bc6+-) 28.Rf4 (28.Rf4 f6 29.Qg7+-) 1-0. black_bishop_88 (2560) - Karnemelk01 (2525), lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6)

4.h3 a5 5.b5 Nbd7 6.g4 Nc5 7.Bg2 h6 (7...Ne6 8.e3=+) 8.e3 (8.d4 ed4 9.Nf3 h5=) 8...Rb8 (8...Na4 9.Bc1=+) 9.Ne2 (9.Nc3 d5=) 9...Be7 (9...Na4 10.Bc1=+) 10.d4 ed4 11.Nd4 0-0 12.Nd2 Ne6 (12...Na4 13.Qb1 Be6=) 13.h4 (better 13.Nf5!?+=) 13...Nd4-/+ 14.Bd4 Bg4 15.Bf3 Bf3 16.Qf3 Kh8 (16...d5 17.c4=+) 17.Rg1 d5 18.0-0-0? (18.c4=+) 18...c5?? (18...Ba3 19.Kb1 Be7 20.Rg7 Qd6+/-) 19.Be5+= Rc8 20.Nf1 (20.Nc4! Ra8 21.b6+=) 20...Qd7 21.a4 (21.Ng3 c4 (worse 21...Qb5 22.Nf5 c4 23.Ne7+/-) 22.a4 Qe6=) 21...d4 (21...Qe6 22.Bf6 Bf6 23.Rd5 Bh4 24.e4-/+) 22.Ng3 (better 22.ed4!? cd4 23.Bd4=) 22...Qe6-/+ 23.ed4 (23.Qf5!? Qa2 24.Ne4 Qa1 25.Kd2 Ne4 26.Qe4 Qc3 27.Ke2-/+) 23...cd4-+ 24.Bd4 Qa2 25.Qd3 Ba3 26.Kd2 Bb4 (26...Rfd8 27.Nf5 Bb4 28.Ke2 Rc2 29.Kf1 Rf2 30.Bf2 Rd3 31.Rd3 Qb1 32.Ke2 Qc2 33.Kf3 Qd3 34.Ne3-+) 27.Ke2 Rfe8 (27...Rc2 28.Kf3 Bc3-+ (28...Qa4?! 29.Nf5 Qa2 30.Rg7 Qd5 31.Kg3 Bd6 32.Kh3=)) 28.Kf1-/+ Rc2 29.Nf5 Rd2 (better 29...Rd8 30.Qe3 Qc4 31.Kg2 Bc5 32.Bf6 Be3 33.Rd8 Kh7 34.Ne3 Qe4 35.Kg3 Qg6 36.Bg5 hg5-+) 30.Rd2+= Qd2?? (better 30...Bd2 31.Rg7 Re1 32.Kg2 Qd5 33.Qf3 Rg1 34.Kg1 Qf3 35.Bf6 Qf5 36.Rg6 Kh7 37.Rg7 Kh8 38.Rg6 Kh7 39.Rg7 Kh8=) 31.Qd2+- Bd2 32.Nh6 (better 32.Rg7 Nh5 33.Rf7 Kg8 34.Rb7+-) 32...Re1 (32...Bh6!? 33.Bf6 gf6 34.Rg4-+) 33.Kg2 Rg1 34.Kg1 gh6?? (better 34...Bh6 35.Bf6 gf6-+) 35.Bf6+= Kh7 36.h5 Bg5 37.Bc3 Bd8 38.Kg2 f6 39.Kf3 Kg7 40.Ke4 Kf7 41.Kd5 Ke7 (41...Bc7+-) 42.f4 Bb6 43.f5 Be3 (43...Kf7 44.Bd4 Bc7 45.Be3+-) 44.Ba5 b6 (44...Kf7 45.Kd6 Bf4 46.Kd7+-) 45.Bc3 Kd7 46.Bf6 Bf4 47.Bd4 Bd2 48.Bb6 Bg5 49.Bd4 (better 49.a5 Ke7 50.Bd4 Bf4+-) 49...Bh4 50.a5 Bg5 51.a6 Bh4 52.b6 (52.a7 Ke8 53.a8Q Kf7 54.Qb7 Ke8 55.Bc5 Kd8 56.Ke6 Bf6 57.Qd7) 52...Kd8 (52...Bg3 53.a7 Bc7 54.a8Q Bb6 55.Qc6 Ke7 56.Qd6 Kf7 57.Qd7 Kf8 58.Ke6 Bd4 59.Qf7) 53.a7 Kc8 (53...Bf2 54.Ke6 Bg3 55.a8Q Bb8 56.Qb8) 54.a8Q (54.Kc6 Kd8 55.a8Q Ke7 56.Bg7 Bf6 57.Qf8) 54...Kd7 55.Qc6 White prepares f6 55...Ke7 56.Qe6 (56.Bc5 Kd8 57.b7 Bf6 58.b8Q) 56...Kd8 (56...Kf8 57.Bc5 Be7 58.Be7 Ke8 59.Bd6 Kd8 60.Bc7) 57.f6 (57.Kc6 Bf6 58.Bf6) 57...Bf6 (57...Bg3 58.f7 Be5 59.f8Q) 58.Bf6 1-0. black_bishop_88 (2490) - Neuraquis (2450), lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6)

4.h3 a5 5.Nc3 ab4 6.ab4 Ra1 7.Qa1 Bd7 8.e3 Be7 9.Nf3 c5 10.bc5+/- dc5 11.Ne5 Bd6 12.Ng4 0-0 13.Nf6 gf6?! 14.Ne4 Be5 15.Be5 fe5 16.Qe5 f6 17.Qc5 Bc6 18.Qf5 Qd5 19.Nf6 Rf6 20.Qf6 Nd7 21.Qd4 Ne5 22.Qd5 Bd5 23.d4 Nc4 24.e4! Bf7 25.Bc4 Bc4 26.Kd2 Kf7 27.d5 Kf6 28.Kc3 b5 29.Kd4 Be2 30.e5 Kf5 31.Re1 Bc4 32.e6 (32...Bd5 33.Kd5+-) 1–0. pierre – LurZa_boY, internet, 2008.

4.h3 a6 5.e3 Be7 6.c4 Bd7 7.d3 b5 (7...0-0 8.d4=+) 8.Qc2 0-0 9.Nd2 Be6 (9...a5 10.ba5 c6 11.d4 ed4 12.Bd4 Qa5 13.Ngf3=) 10.Be2 Nbd7 11.Ngf3 Rc8 12.cb5 ab5 13.Qc6 (13.d4 c5 14.bc5 ed4 (worse 14...dc5 15.de5 Nd5 16.Bb5+/-) 15.Nd4 Nc5 16.Ne6 fe6=) 13...Rb8 14.Rc1 Ne8 (14...Nd5 15.d4 ed4 16.Nd4+=) 15.0-0 (15.d4 Bf6+=) 15...Rb6 16.Qc3 f6 17.d4 c5 18.dc5 dc5 19.bc5 Nc5 20.Bd1 (20.Qc2 Nc7=) 20...Nd3=+ 21.Ra1? (better 21.Rb1=+) 21...Bc4?? (better 21...b4 22.Qc2 Nb2 23.Qb2 ba3-+) 22.Bc1 (22.Nc4 bc4 23.Qc4 Kh8+/-) 22...Nc1 (22...Bf7!?=+) 23.Nc4+= bc4 (23...Rc6 24.Rc1 bc4 25.Ba4+=) 24.Qc4+/- (24.Qc1?! Nd6=) 24...Kh8 25.Qc1 (25.Rc1?! Ba3 26.Rc2 Nd6=) 25...Nd6 26.Be2 Ne4 27.Rd1 Qa8 28.Rd3 (28.Qc7!? Rb7 29.Qc2+=) 28...Nc5= 29.Rc3 Nb3 30.Qb2 Rfb8 31.Nd2?? (better 31.Ra2=) 31...Nd4!-+ 32.Nb3 (32.ed4 Rb2) 32...Rb3 (32...Ne2?! 33.Qe2 Rb3 34.Rb3 Rb3 35.a4-+) 33.Rb3 Rb3 (33...Nb3?! 34.Rb1 Bd6 35.Qc2-+) 34.Qd2 Ne2 35.Qe2 Ra3 36.Ra3 Qa3 37.Qb5 Qc1 38.Kh2 Threatening mate: Qe8 38...Qc8 39.e4 h6 40.g3 (40.g4 g6-+) 40...Bc5 (40...Qc2 41.Qe8 Kh7 42.Qe7 Qf2 43.Kh1 Qg3 44.Qe6 Qe1 45.Kh2 Qe4 46.Kg1-+) 41.Qc4 Qc7 42.h4 Qb6 43.Kg2 Qd6 (43...Bf2?! 44.Qc8 Kh7 45.Qf5 Kg8 46.Qf2 Qf2 47.Kf2-+) 44.Qf7 (44.Qd5-+) 44...Qd4 45.Qg6 (45.Qa2 Qe4 46.f3-+) 45...Qf2 46.Kh3 Qa2 (46...Qf1 47.Kg4 Qd1 48.Kh3 h5 49.Qh5 Qh5 50.g4 Qh6 51.g5 fg5 52.Kg4 gh4 53.Kf3 Qh5 54.Kg2 Qg4 55.Kh2 Qg3 56.Kh1 Qg1) 47.h5 Qe6 48.Kg2 Kg8 49.Kf3 Bf8 50.Kg2 Qa2 51.Kh3 Qd2 52.Qf5 Qg5 53.Qg6 (53.g4 Qe3 54.Kg2 Qd2 55.Qf2 Qf2 56.Kf2 Bc5 57.Kg2 Kf7-+) 53...Qg6 54.hg6 Bb4 55.g4 Kf8 56.Kg3 Ke7 57.Kf3 Kd6 58.Ke3 Kc5 59.Kd3 Ba5 60.Ke3 Kc4 61.Ke2 Kd4 62.Kf3 Kd3 (62...Kd3 63.Kf2 Ke4-+) 0-1. petrobbo (2025) - Batya (2105), ChessWorld.net, 2015.

4.h3 Bd7 5.e3 Nc6 6.d3 Be7 7.g3 0-0 8.Bg2 Qc8 9.Nd2 h6 10.c4 a6 11.Ne2 Na7 12.Nf3 b5 13.Rc1 c5 14.cb5+= Bb5 15.0-0 Nc6 16.Nc3 Na7 17.bc5 Qd7 18.a4 Bc6+/- 19.cd6 Bd6 20.d4 Rab8 21.Rb1 ed4+/- 22.Qd4 Bf3 23.Bf3 Rbd8? 24.Ne4+- Be7 25.Qd7 Rd7? 26.Nf6 Bf6 27.Bf6 gf6 28.Rb6 Kg7 29.Ra6 Rfd8 30.Kg2 Nc8 31.Rc6 Ne7 32.Rc3 Ng6 33.Be4 Ra7 34.Bg6 fg6 35.Ra1 Rda8 36.Rc4 g5 37.f4 gf4 38.ef4 Kg6 39.h4 Kf5 40.Kf3 h5 41.Rc5 Kg6 42.f5 Kh6 43.Rc6 Ra4 44.Ra4 Ra4 45.Rf6 Kg7 46.Rg6 Kh7 47.Re6 Ra3 48.Kf4 1–0. beammeupscotty (2115) – felippe (2100), net–chess.com, 2003.

4.h3 Be6 5.g4 Nd5 6.e4=+ Nf4 7.Ne2 Qf6 8.Nf4 Qf4=+ 9.Nc3 Nc6 10.Bg2= Nd4? 11.Nd5+/- Bd5 12.ed5 c5 13.c3 Nb5 14.Qe2 Nc7 15.Bc1 Be7 16.d4 Qf6 17.g5 Qg6 18.de5 de5 19.bc5 Bc5 20.Qe5 Kd7 21.0-0 Rae8 22.Qg3 Bd6 23.Qg4 f5 24.Qa4 Kc8 25.Qa7 Qg5 26.Bg5 h6 27.Be3 g5 28.Qb6 f4 29.Bd4 (29…f3 30.Bf3+-) 1–0. pierre – azylum, internet, 2009.

4.h3 Be6 5.g4 Be7 6.Bg2 Nc6 7.e3 0-0 8.Nc3 d5 9.Nce2 e4 10.Nf4 d4 11.g5 de3 12.fe3 Nd5 13.g6?? Nf4 14.Rh2?? Ng2 15.Rg2 Bh4 16.Kf1 hg6 17.d4 Bc4 18.Ne2 Qf6 19.Kg1 Rad8 20.Rb1 Be6 21.Nf4 Bh3! 22.Nh3 g5 23.d5 Qf5 24.Qd4?? Nd4 25.Bd4 b6 26.Rf1 Qh3 27.c4 Rd6 28.a4 Rh6 29.Rh2 Qg3 30.Rg2 Qh3 31.c5?? Bf2! 32.Kf2 Qh4 33.Kg1 f5 34.cb6 f4 35.bc7 Rc8 36.ef4–+ gf4 37.Rg7 Kf8 38.Ba7 Qh2 0–1. esko – tapza, net–chess.com, 2001.

4.h3 g6 5.d3 Bg7 6.e4 0-0 (6...a5 7.Nf3=+) 7.Be2 Nc6 8.Nf3 Nh5 9.c4 Nf4 10.0-0 Be6 11.b5 Ne7 12.Kh2 (12.Nbd2 f5=) 12...Qd7 13.Ng5 h6 (13...a6 14.Ne6 Qe6 15.ba6 Ra6 16.Nc3=+) 14.Ne6= Qe6 15.Nc3 c6 16.Bc1 a6 17.Bf4 (17.b6!?=) 17...ef4=+ 18.d4 c5 19.d5? (better 19.Rc1 Bd4 20.Bf3=+) 19...Qe5-+ 20.Rc1 f3 21.g3 fe2 22.Qe2 Rfe8 23.f4 Qf6 24.b6 (24.Qf3 Qd4 25.ba6 ba6-+) 24...Nf5 (24...Nc8 25.Na4-+) 25.Qd2 (25.Qf2 Nd4-+) 25...Nd4 (25...Qd4 26.Qe2-+) 26.Qd1 Qd8 27.Rb1 f5 (better 27...Nb5 28.cb5 Bc3 29.f5-+) 28.ef5? (28.Qd3 Qf6-+) 28...gf5 (better 28...Re3!? 29.f6 Bf6 30.Qd2 Nf3 31.Rf3 Rf3 32.Ne4 Ra3 33.Qe2-+) 29.Qd3 Qe7 30.Rbe1 (30.Rbd1 Qe3-+) 30...Qe1 31.Re1 Re1 32.Kg2 Rae8 33.Kf2 R1e3 (better 33...Nb3 34.Nd1 Nc1 35.Qf5 Rd1 36.Kf3-+) 34.Qe3 Re3 35.Ke3 Nc2 36.Kd3 Bc3 37.Kc3 Nd4 (better 37...Na3!? 38.g4-+) 38.Kd3 Kf7 39.a4 (39.Kd2 Kg6 40.a4 h5-+) 39...Kg6 (39...h5!? 40.h4-+) 40.Ke3 Kh5 41.Kd3?? (41.Kf2-+) 41...Nf3 42.Ke3 Ng1 43.h4 Kg4 44.Kf2 Nf3 (44...Nf3 45.Kg2 Nh4 46.Kf2 Ng6-+) 0-1. petrobbo (2060) - TheCypriot (2145), ChessWorld.net, 2014.

4.h3 h5 5.Nf3 Bf5 6.d3 Be7 7.e4 Be6 8.c4 c5 (8...Nbd7 9.Ng5+=) 9.Nc3 cb4 10.ab4 Nc6 (10...Na6 11.Nd5+=) 11.b5+/- Nd4 (11...Nb8 12.Be2+/-) 12.Nd4 ed4 13.Ne2 (13.Nd5 Bd5 14.ed5 Qb6+/-) 13...a6 (better 13...d5!? 14.Nd4 Bb4 15.Ke2 dc4 16.Ne6 cd3 17.Qd3 fe6+=) 14.Nd4+- ab5 15.Ra8 Qa8 16.Nb5 (16.Ne6?! fe6 17.cb5 Qa5 18.Qd2 Qb5+=) 16...Qa5 17.Bc3 Qa2 (17...Qb6 18.Bd4 Qc6 19.Na7+-) 18.Nc7 (18.Be2 0-0+-) 18...Kd7 19.Ne6 fe6 20.Be2 d5 (20...Ra8 21.0-0+-) 21.cd5 ed5 22.0-0 de4 23.de4 Ke6 24.Qc1?? (better 24.Bb2! Ba3 25.Ba3 Qa3 26.Bc4 Ke7 27.e5+-) 24...Rc8?? (24...Qe2 25.Qb1 b5-/+ (worse 25...Ne4 26.Re1 Qf2 27.Kh1+/-)) 25.Qe3 Qb3 26.Bf6 Qe3 27.fe3 Bf6 28.Bh5 Rc3 (28...Rc2 29.Rd1+=) 29.Bg4 (29.Rb1!?+/-) 29...Ke5+= 30.Rf5 (30.Kf2!? Bg5 31.Rb1 Be3 32.Ke2+=) 30...Ke4= 31.Rf4 (31.Rb5 Ke3 32.Rb7 Rc1 33.Kh2 Be5 34.g3 Rc2 35.Kg1 Ke4= (35...Bg3? 36.Rb3 Kf4 37.Rf3 Ke5 38.Rg3+-)) 31...Ke3=+ 32.Rf3 Kd2 33.Rc3 Kc3 34.Kf2 (34.Be2 Kb4=+) 34...b5 35.Kf3 b4 36.Bf5 (36.Ke2 b3-+) 36...b3 37.Kg4 b2 38.Kh5 Kd2 39.Kg6 Kc1 (39...Ke3 40.g4-/+) 40.g4 b1Q (better 40...Be5-/+) 41.Bb1+= Kb1 42.g5 Be5 43.h4 Kc2 44.h5 Kd3 45.h6 (45.Kf5!? Kd4 46.h6 gh6 47.gh6=) 45...gh6= 46.gh6 Ke4 47.Kf7 Kf5 48.Kg8 Kg6 49.h7 Bf6 50.h8Q Bh8 ½-½. black_bishop_88 (2590) - ehrlichroy (2555), lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6)

5.e4 Bd7 6.Nf3 h6 7.Be2 Be7 8.d4 ed4 9.Nd4 0-0 10.0-0 c5 11.bc5 dc5 12.Nf3 Bc6 13.e5 Qd1 (13...Ne4 14.Qc1=) 14.Rfd1 (14.Nd1?! Nd5=; 14.Bd1?! Nd5=) 14...Ne4 15.Nd5 Bd5 16.Rd5 Nc6 17.Bd3 Ng5 18.Ng5 Bg5 19.Rc5 Rfe8 20.Be4 Rac8 21.g3 f6? (better is 21...Red8+-) 22.f4 fe5 23.fg5 hg5 24.Rf1 Nd4 (24...g4 25.Bd5 Kh7 26.Rf7+-) 25.Rc8 Rc8 26.Bb7 Rc2 (26...Rc5+-) 27.Bd4 ed4 (27...Rc7 28.Bd5 Kh7 29.Be5+-) 28.Bd5 Kh8 29.Rf8 (29.Rf8 Kh7 30.Be4 g6 31.Bc2+-) 1–0. Janek – Alf, internet, 2016.

5.e4 Be6 6.Nf3 c6 7.d4 ed4 8.Nd4 Bd7 9.Bc4 d5 (better 9...b5!? 10.Be2 (10.Ba2 a5= 11.0-0 ab4 12.ab4 Na6 13.Bb3 Nb4 14.Re1 Be7 15.Ba3=; 10.Bb3 c5 11.Nde2 c4 12.Ba2 Be7 13.0-0 Nc6 14.Nf4 0-0 15.Re1+=; 10.Bd3 c5 11.Nf5 Bf5 12.ef5 d5 13.Nd5 Nd5 14.Be4 Nc7 15.Ba8+=; 10.Bf1 Qe7 11.Qe2 a5 12.Rd1 ab4 13.ab4 Na6 14.Ra1 Qd8 15.Na2=) 10...c5 11.Nf3 cb4 12.ab4 Nc6 13.Nd5 Ne4 14.Bb5 Rb8 15.Bc6+-; 9...Be7 10.0-0 (10.Qf3 b5 11.Be2 a5 12.0-0 0-0 13.Rfd1 Re8 14.Nf5 Bf5 15.Qf5+=; 10.Bb3 c5 11.Nf5 Bf5 12.ef5 0-0 13.bc5 dc5 14.0-0 b5 15.Re1=; 10.Nb3 Be6 11.Be6 fe6 12.Nd4 Qc8 13.Qe2 0-0 14.Na4 Bd8 15.e5+=; 10.Nf3 0-0 11.0-0 b5 12.Be2 a5 13.Qd4 Re8 14.Rfe1 Qc7 15.Red1=) 10...0-0 11.Qf3 b5 12.Bb3 a5 13.Rfe1 ab4 14.ab4 Na6 15.Na2+=) 10.ed5+- cd5 (10...Qe7 11.Be2 (11.Kf1+- c5 12.bc5 Qc5 13.Qd3 b5 14.Bb3 Be7 15.Ne4+-) 11...cd5 12.0-0 Nc6 13.Re1 Nd4 14.Qd4 Be6 15.f4+-) 11.Nd5+- Nd5 12.Bd5 Qc7 (12...Qe7 13.Kf1 Nc6 14.Qf3+- Ne5 15.Qg3+-) 13.Qf3 (13.Qe2 Be7+- 14.0-0 Bc8 15.Rfe1+-) 13...Bc6 14.0-0 (14.0-0-0 Bd5 15.Qd5+-) 14...Bd5 15.Qd5 Nc6 (15...Qd7 16.Rfe1 Kd8 17.Qa5 Kc8 18.Rad1+-) 16.Rfe1 (16.Nc6 bc6 17.Rfe1 Be7 18.Re7 Ke7 19.Qg5 Kd7 20.Qg4 Ke8 21.Qg7 Rf8+-) 16...Ne7 17.Nf5 Rd8 18.Ne7 Be7 19.Qe4 (19.Qg5 Rg8+-) 19...f6 20.Re2 (20.Bd4 Rd6+-) 20...Rd7 21.Bd4 (21.c4 0-0+-) 21...0-0 22.Rae1 Bd6 23.g3 Qc8 (23...Kh8 24.Qe8 Rdf7 25.Qa4+-) 24.Qe6+- Kh8 25.Qe8 (25.c4 Qc6 26.Qg4 f5+-) 25...Rd8 26.Qe4 Qc7 27.c3 b5 28.Qe8?? (better 28.Qf5+-) 28...Rde8–+ 29.Re8 Rg8 30.R8e6 Qd7 31.f4 (31.h4 Rc8–+) 31...h6 (31...Be5 32.R6e5 fe5 33.Re5–+) 32.Kg2 (32.f5 Rd8–+) 32...Kh7 (32...Be5 33.R6e5 fe5 34.fe5 Qd5 35.Kh3–+) 33.Kf3 (33.f5–+) 33...Kh8 (33...Be5 34.f5 Qd5 35.Ke3–+) 34.Kg4?? (34.Kg2 Be5 35.R6e5 fe5 36.fe5 Qd5 37.Kh3 Qe6 38.Kg2 Qa2 39.Kh3–+) 34...Re8 (34...Be5 35.f5 g6 36.R1e5 fe5 37.Be5 Kh7 38.Kh3–+) 35.f5 Re6 (35...Be5 36.Re8 Qe8 37.Re4–+) 36.fe6 (36.Re6 Kg8–+) 36...Qe7 (36...Qc6 37.a4–+) 37.Bc5 Bc5 38.bc5 Kg8 (worse 38...Qc5 39.e7 Qc8 40.Kf4 g5 41.Kf3–+) 39.Kf5 (39.c6 Kf8 (39...Qa3 40.e7 Kh7 41.e8Q Qc3 42.Qe4 Kg8 43.Rd1 f5 44.Qf5 Qb4 45.Kh3+-) 40.a4 ba4–+) 39...Kf8 (better 39...Qc5!? 40.Kg4 Qf2 41.Rh1–+) 40.c6 (40.Kg6 Qc5 41.e7 Ke8 42.Kg7 Qa3–+) 40...Qc5 41.Kg6 (41.Kg4 Qc6 42.Re3 h5 43.Kf4 g5 44.Kf5 Qc5 45.Ke4 Qc4 46.Kf3 Qf1 47.Ke4 Ke7–+) 41...Qc6 (better 41...Kg8 42.h4 Qc3 43.Re4–+) 42.e7 Ke8 43.Kg7 Qc3 44.Rd1 (44.Re6 Qa3 45.Kf6 Qf3 46.Ke5 b4–+) 44...f5 45.Kh6 Qe3 (45...Qc2!? 46.Rd4 Qh2 47.Kg5 Qg3 48.Kf5 Qa3 49.Ke4–+) 46.Kg6 Qe6 (46...f4!? 47.g4–+) 47.Kg5 Qe7 48.Kf5 Qf7 (48...Qf7 49.Ke4 Qe6 50.Kf4 Qc4 51.Ke3 Qc5 52.Ke4 Qa3–+; 48...Qa3 49.Re1 Kd7 50.Rd1 Kc7 51.Rd5–+) 0–1. Savrda,J – Hacaperka,Michal, Klatovy op–B, 1999.

5.e4 Bg4 6.Be2 Be2 7.Nge2 Be7 8.0-0 0-0 9.d4 ed4 (9...Nbd7 10.Qd2=) 10.Nd4+= Qd7 (better is 10...Nc6!?+=) 11.Nf5+- Nc6? (11...Qe6+-) 12.Nd5 Nd5?? (12...Kh8+-) 13.Qg4 (13.Qd5?! Bf6 14.Bf6 gf6+-) 13...Nf6 (13...Bg5 14.ed5 Qd8 15.dc6 g6 16.cb7 Rb8+-) 14.Qg7 1–0. marektheim – victory888, internet, 2015.

5.Nf3 Be6 (5...e4 6.Nd4=) 6.e3 (6.d4 e4 7.d5 Nd5 8.Ne4 Nb6=) 6...Nbd7 (6...Nc6 7.Be2=) 7.Be2 (7.Ng5 Bg4 8.Be2 Be2 9.Qe2 d5=) 7...h6 (7...d5 8.0-0=) 8.0-0 (8.d4 e4 9.d5 ef3 10.de6 fe2 11.ed7 Qd7 12.Ne2 Be7=) 8...d5 9.d4 (9.Na4 b5 10.Nc5 Nc5 11.bc5 e4=) 9...e4 10.Nd2 b5 (10...a5 11.ba5 c6 12.Nb3=) 11.f3+= Bf5 (11...ef3!? 12.Bf3 a5 13.ba5 c6+=) 12.fe4+- Be4 13.Nce4 de4 14.c4 bc4 (14...a5 15.cb5 ab4 16.a4+-) 15.Nc4 (15.Qc2 Qe7+-) 15...Bd6 (15...Nb6 16.Qc2 Nc4 17.Bc4+-) 16.Qa4 (16.d5 0-0+-) 16...0-0 17.Qc6 (17.Nd6 cd6 18.Qc6 Qb6+=) 17...Nb6+= 18.Rac1 (18.Nb6 cb6 19.d5 Rc8 20.Bf6 gf6+-) 18...Nfd5 19.Nd6 (19.Rfe1!?+=) 19...cd6= 20.Rfe1 Qd7 (20...Qe7 21.Qc2=+) 21.Bf1 (21.Qd7 Nd7 22.Rc6 N7b6+-) 21...Rfc8 (better 21...Qe6!?=) 22.Qd7+- Nd7 (22...Rc1 A) 23.Bc1?! Nd7 24.Bd2 Kf8=; B) worse 23.Qd6 Re1 24.Kf2 Rb1–/+ (worse 24...Re3 25.Bc4 Nc4 26.Qd5=); C) 23.Qf7 Kf7 24.Bc1+- (worse 24.Rc1 Ne3 25.Rc7 Ke6=)) 23.Rc8 Rc8 24.Ba6 Rc7 (24...Rc2!? 25.Re2 Re2 26.Be2 Ne3+-) 25.Rc1+- Rc1 (25...Ra7 26.Bb5+-) 26.Bc1 N7b6 27.Kf2 Kf8 (27...Nc3 28.Ke1+-) 28.Bb7 Nc7? (better 28...Ke7+-) 29.Be4 d5 30.Bd3 Ke7 (30...Ne6 31.e4+-) 31.Kf3 (31.e4 de4 32.Be4 Ke6+-) 31...Kd6 (31...Ne6 32.h4+-) 32.Kf4 (32.e4 de4 33.Ke4 Ne6+-) 32...Nc4 (32...Ne6 33.Kg3+-) 33.a4 g6 34.b5 Ke6 (34...Ne6 35.Kf3+-) 35.e4 Nb6 (35...g5 36.Kg4+-) 36.a5 Nd7 (36...Nc4 37.b6 Na6 38.ed5 Kd5 39.Bc4 Kc4 40.Ke5+-) 37.b6 Na8 (37...Ne8 38.e5 g5 39.Kg4+-) 38.ed5 Kd5 39.Be4 (39.Be4 Kd4 40.Ba8+-) 1–0. Wall,Bill – Tuxedo, internet, 2003.

5.e3 Nbd7 6.Nf3 h6 7.d4 Bg4 (7...e4 8.d5 Bg4 9.h3=) 8.Be2 Be7 9.de5 de5 10.h3 Bf5 11.0-0 0-0 12.Na2 Bd6 13.c4 b6 14.Nc3 Re8 15.Qd2 c6?? (better is 15...a5 16.Nb5 Ne4=) 16.Qd6+- Re6 17.Qd2 Qc7 18.Rad1 g5 (18...Rd8 19.Nh4 Bh7 20.f4+-) 19.e4! Bh7 (19...Be4 20.Ne4 Combination; 19...Ne4 20.Qd7 Deflection) 20.h4 g4 21.Ne1 Nf8 22.Qh6 Ne4 23.Qh5 Nf6 24.Qg5 Kh8 (24...Bg6 25.Nd3+-) 25.Nd3 (25.Bg4 Ng4 26.Qg4 a5+-) 25...Ng6 26.h5 Nf4 (26...Ne7 27.Nb5! cb5 28.Ne5 Neg8 29.Bg4 Rae8+-) 27.Nf4 Rd6 (27...ef4 28.Nd5 cd5 29.Bf6 Rf6 30.Qf6 Kg8 31.Rd5 g3+-) 28.Qe5 Re8 29.Qd6 Qd6 30.Rd6 1–0. Waller – Adamant, playchess.de, 2002.

5.e4 Be7 6.Nf3 h6 (6...Nc6 7.Bd3=) 7.d4+= ed4 (7...0-0 8.d5 Bg4 9.h3+=) 8.Nd4 0-0 (8...Bd7!?+=) 9.Ne6+/- fe6 10.Bc4 Qd7 11.0-0 Kh8 (11...c6 12.Bb3+/-) 12.f4 e5 (12...Nc6 13.Qd3+/-) 13.f5 (13.Qd3 ef4 14.Ne2 Nh5+/-) 13...Qc6 (13...Nc6 14.Be6 Qd8 15.Nd5+/-) 14.Qe2+- Qb6 (14...a6 15.Kh1+-) 15.Kh1 Nc6?? (15...a6 16.Rad1+-) 16.Nd5 (16.Na4 Nd4 17.Nb6 Ne2 18.Na8+- (18.Be2?! ab6 19.Bd3 g5+=)) 16...Nd5 17.Bd5 (17.ed5 Nd4 18.Qe4 a5+-) 17...Bf6 (17...a5 18.c3+/-) 18.Rad1 (18.c3 Bg5+/-) 18...Ne7 (18...a5 19.c3 ab4 20.ab4+/- (worse is 20.cb4 Nd4 21.Qe3 c6=)) 19.Ba2 (19.Be6 Bg5+-) 19...Qc6 (19...Bg5 20.Rf3+-) 20.g4 (20.Rf3 Bg5+-) 20...Rad8 (20...Bg5 21.Kg2+/-) 21.Rg1 (21.Rf3 Bg5+/-) 21...d5 22.g5 (better is 22.Rd3!?+/-) 22...Bg5= (worse is 22...hg5 23.ed5 Qd6 24.Qg4+/-) 23.Be5 de4 ½–½. Bakuradze,Irakli – Hou,Yijie, World Cadets U12, 2016. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.Nc3 Be6)

5.Nf3 a5 A) 6.e4 ab4 (6...Be7 7.b5 0-0 8.Be2 Nbd7 9.d4 Bg4 10.0-0+=; 6...Nc6 7.b5 Nd4 8.Nd4 ed4 9.Ne2 Ne4 10.Nd4=; 6...Nbd7 7.Ng5 Bg4 8.f3 Bh5 9.b5 Be7 10.Be2=) 7.ab4 Ra1 8.Qa1 Be7 9.Qa8 Qc8 10.d4=; B) 6.d4 ab4 (6...Nbd7 7.d5 Bg4 8.e4 Be7 9.Bb5 0-0 10.h3=; 6...Bd7 7.e4 ed4 8.Nd4 Qe7 9.Be2 Ne4 10.Nd5+=; 6...e4 7.d5 Nd5 8.Nd5 ef3 9.ef3 ab4 10.ab4=) 7.ab4 Ra1 8.Ba1 Be7 9.e4 0-0 10.d5=; C) 6.b5 Nbd7 (6...a4 7.e4 Be7 8.d4 Nbd7 9.h3 c6 10.Ng5=; 6...Bf5 7.d3 Bg4 8.e4 Be7 9.Be2 0-0 10.0-0=; 6...Be7 7.e4 0-0 8.Be2 Nbd7 9.d4 Bg4 10.0-0+=) 7.Ng5 Bg4 8.f3 Bh5 9.e4 Be7 10.Be2=.

5.Nf3 Nc6 A) 6.e3 Be7 (6...Qd7 7.Be2 0-0-0 8.d4 e4 9.d5 ef3 10.de6=; 6...a6 7.Be2 Bf5 8.0-0 Be7 9.d4 ed4 10.ed4=; 6...h6 7.Bb5 Qd7 8.0-0 a6 9.Ba4 b5 10.Bb3=) 7.d4 ed4 8.ed4 d5 9.Bd3 Bg4 10.Nb1=; B) 6.e4 a6 (6...a5 7.b5 Nd4 8.Nd4 ed4 9.Ne2 Ne4 10.Nd4=; 6...Be7 7.Bb5 Bd7 8.d4 Nd4 9.Bd7 Qd7 10.Nd4+=; 6...Nd4 7.Ng5 Bg4 8.f3 Bh5 9.Ne2 h6 10.Bd4=) 7.Ng5 Bg4 8.f3 Bh5 9.Bc4 Be7 10.0-0=; C) 6.b5 Ne7 (6...Na5 7.e4 Nc4 8.Bc4 Bc4 9.d3 Be6 10.0-0=; 6...Nb8 7.e4 Be7 8.Be2 Nbd7 9.0-0 0-0 10.d4+=; 6...Nd4 7.Nd4 ed4 8.Nb1 Bd7 9.a4 a6 10.ba6=) 7.e4 Bg4 8.Bc4 d5 9.ed5 e4 10.h3=.

5.Nf3 Nbd7 A) 6.Ng5 Bf5 (6...Bg4 7.f3 Bh5 8.e4 Be7 9.Bb5 c6 10.Be2=; 6...Bc4 7.d3 h6 8.dc4 hg5 9.e3 Rh4 10.Bd3=) 7.e4 Bg6 8.d4 h6 9.Nf3 Ne4 10.Ne4=; B) 6.d4 e4 (6...Be7 7.e4 a5 8.d5 Bg4 9.h3 Bh5 10.Bb5=; 6...a5 7.d5 Bg4 8.e4 Be7 9.Bb5 0-0 10.0-0=; 6...a6 7.e4 a5 8.d5 Bg4 9.h3 Bh5 10.Bb5+=) 7.d5 Nd5 8.Nd5 ef3 9.ef3 Ne5 10.Be2=; C) 6.e4 a5 (6...h6 7.Be2 a5 8.0-0 Be7 9.d4 ab4 10.ab4+=; 6...Be7 7.Ng5 d5 8.ed5 Bd5 9.d4 ed4 10.Qd4+=; 6...Bg4 7.Be2 Be7 8.0-0 Bf3 9.Bf3 0-0 10.d4+=) 7.Ng5 Bg4 8.f3 Bh5 9.d4 Be7 10.Be2=.

5.Nf3 Be7 6.d4 (6.e4 Nbd7 (6...a5 7.b5 0-0 8.Be2 Nbd7 9.d4 Bg4 10.0-0+=; 6...0-0 7.Be2 a5 8.b5 Nbd7 9.d4 Bg4 10.0-0+=; 6...a6 7.d4 Nbd7 8.h3 c6 9.d5 cd5 10.ed5=) 7.Be2 0-0 8.Ng5 d5 9.Ne6 fe6 10.Bg4=) 6...0-0 (6...e4 7.d5 Bd7 (7...Nd5 8.Nd5 ef3 9.ef3 Bd5 10.Qd5=) 8.Nd4= (8.Nd2 e3 9.fe3 Ng4 10.Nf3=) 8...c5 9.dc6 Nc6 10.e3=; 6...Nbd7 7.e4 a5 8.Be2 ab4 9.ab4 Ra1 10.Qa1=) 7.de5+= de5 8.Ne5 a5 9.b5 (9.Qd8 Rd8 10.b5+=) 9...Nbd7 (9...Bd6 10.Qd4+=) 10.Nf3 (10.Nd7+=) 10...Bc5 11.e3 Qe7 12.Bd3 Bd6 13.0-0 Rad8 14.h3 Nc5 15.e4 Nd3 16.cd3 (16.Qd3?! Bh2 17.Kh2 Rd3 18.cd3 Nh5+=) 16...Nh5 17.e5 Bc5 18.d4 f6 19.ef6 Qf6?? (better is 19...Nf6 20.Re1 Rfe8+/-) 20.Ne4+- (20.Ne4 Qg6 21.Nc5+-; 20.dc5 Rd1 21.Nd1 Qe7–/+) 1–0. pcmvr – bvanderweerd (2100), net–chess.com, 2014.

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.a3).

4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.a3).

4.c4 Be6 5.e3 Be7 (--> 4.e3 Be7 5.c4 Be6).

4.c4 Be7 5.e3 (--> 4.e3 Be7 5.c4).

4.c4 Bf5 5.e3 Be7 (--> 4.e3 Be7 5.c4 Bf5).

4.g3 Be7 5.Bg2 (---> 1.b4 e5 2.Bb2 d6 3.g3 Nf6 4.Bg2 Be7 5.a3).

5.Nd2 0-0 6.e4 Nc6 7.Ngf3= h6 8.Be2 Bg4 9.0-0 d5 10.ed5 Bf3 11.Bf3 Nd5 12.c4 Nf4+= 13.Qb3 Nd3 14.Ne4 Nb2–/+ 15.Qb2 Nd4 16.Be2 Qd7 (17.Rad1 Rfd8–/+; 16...a5 17.Nc3–/+) 0–1. willow27 – Steve20, ChessWorld.net, 2007.

5.Nd2 0-0 6.Ngf3 a5 A) 7.b5 A1) 7...Bd7 8.a4 (8.c4 c6 9.bc6 Nc6 10.e4 Qc7 11.Rb1 Rfc8 12.Be2 Nh5 13.d4=; 8.Qb1 Re8 9.e4 a4 10.Be2 Bb5 11.Be5 Bd7 12.Bb2 Nc6 13.0-0=; 8.e3 Bb5 9.Be2 Bd7 10.0-0 Re8 11.c4 Nc6 12.d4 ed4 13.Nd4–/+) 8...c6 9.c4 Bg4 10.h3 Bh5 11.g4 Bg6 12.Nh4 Nbd7 13.Bg2+=; A2) 7...Qe8 8.a4 (8.Rb1 Bg4 9.c4 Nbd7 10.e4 Nc5 11.Be2 c6 12.bc6 bc6 13.0-0=; 8.c4 Nbd7 9.e3 Nc5 10.Be2 Bf5 11.d4 ed4 12.Nd4 Bg6 13.0-0=) 8...Nbd7 9.e4 Nc5 10.Be2 Qd7 11.0-0 Qe8 12.Nc4 Be6 13.Nfd2=; A3) 7...Qd7 8.Rb1 (8.c4 Re8 9.e3 Qg4 10.c5 Bd7 11.b6 Na6 12.cd6 cd6 13.Rc1=) 8...Qb5 9.Be5 Qc6 10.Bb2 Re8 11.e3 Nbd7 12.Nd4 Qd5 13.N2f3=; A4) 7...Nbd7 8.Rb1 (8.e3 Nc5 9.Rb1 Na4 10.Ba1 Nd5 11.Qc1 Nac3 12.Bc3 Nc3 13.Rb3=+; 8.e4 Nc5 9.Rb1 Be6 10.Be2 Na4 11.Ba1 Ba2 12.Rc1 Nc5 13.0-0=; 8.Nc4 Nc5 9.d4 ed4 10.Bd4 d5 11.Nce5 Nfe4 12.e3 f6 13.Bc5=+) 8...Nb6 9.e4 Na4 10.Ba1 Be6 11.Be2 Ba2 12.Rc1 Nc5 13.c4=; B) 7.e3 B1) 7...Be6 8.Be2 (8.b5 Qd7 9.c4 c6 10.c5 cb5 11.cd6 Bd6 12.Be5 Be5 13.Ne5=; 8.c4 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Bc3 c6 12.d4 e4 13.Ng5=+; 8.d4 e4 9.Ng5 Bf5 10.h4 ab4 11.ab4 Ra1 12.Qa1 d5 13.Qa8–/+) 8...ab4 9.ab4 Ra1 10.Ba1 Nd5 11.b5 Nf6 12.0-0 Bg4 13.c4=; B2) 7...Bd7 8.c3 (8.Be2 ab4 9.ab4 Ra1 10.Qa1 Na6 11.Qa5 Nb8 12.0-0 Nc6 13.Qa3=; 8.ba5 Ra5 9.Be2 Nc6 10.0-0 Re8 11.Rb1 Ra7 12.c4 Bf5 13.e4=+; 8.c4 ab4 9.ab4 Ra1 10.Ba1 Re8 11.Be2 Na6 12.Bc3 b5 13.0-0=) 8...Be6 9.Be2 ab4 10.ab4 Ra1 11.Ba1 Re8 12.0-0 Bg4 13.c4=; B3) 7...Bg4 8.Be2 (8.ba5 Ra5 9.Be2 Re8 10.0-0 Nc6 11.Rb1 b6 12.Nb3 Ra7 13.Qd2=+; 8.c4 ab4 9.ab4 Ra1 10.Qa1 Nbd7 11.Be2 Re8 12.0-0 d5 13.Qa4=) 8...ab4 9.ab4 Ra1 10.Ba1 Nc6 11.b5 Nb4 12.c3 Nbd5 13.c4=; B4) 7...ab4 8.ab4 Ra1 9.Ba1 Nc6 10.b5 Nb4 11.Qb1 c5 12.bc6 Nc6 13.c4=; C) 7.ba5 C1) 7...Be6 8.Nb3 (8.e4 Nc6 9.Bc3 Bg4 10.Qb1 Qc8 11.Be2 Na5 12.h3 Bd7 13.0-0=; 8.Rb1 Nc6 9.e4 Ra5 10.Be2 b6 11.0-0 d5 12.ed5 Bd5 13.Ne5=+; 8.e3 Nc6 9.d4 ed4 10.ed4 Re8 11.Bd3 Nd5 12.0-0 Na5 13.Re1=+) 8...Nc6 9.Qd2 Ng4 10.Rb1 Bh4 11.g3 Be7 12.Bg2 Re8 13.0-0=; C2) 7...Ra5 8.e4 (8.e3 Nc6 9.Be2 Bg4 10.0-0 Qd7 11.Rb1 Rfa8 12.Nb3 Ra4 13.c4=+; 8.Rb1 Nc6 9.Nb3 Ra7 10.e4 Re8 11.Be2 d5 12.Ne5 Ne5 13.Be5–/+; 8.Nb3 Ra4 9.e3 c6 10.c4 Bg4 11.Be2 Nbd7 12.0-0 b6 13.h3=+) 8...Nc6 9.Be2 Be6 10.0-0 d5 11.ed5 Rd5 12.c4 Ra5 13.Nb3=; C3) 7...Nc6 8.e4 (8.e3 Be6 9.Be2 Ra5 10.0-0 Qa8 11.Ng5 Bd7 12.c4 Ra4 13.Rb1=) 8...Ra5 9.Be2 Be6 10.0-0 d5 11.ed5 Bd5 12.c4 Bf3 13.Bf3=; C4) 7...Bg4 8.h3 (8.Nb3 Nc6 9.Qd2 Re8 10.Rb1 Qd7 11.e3 Bf3 12.gf3 d5 13.a6=+; 8.e3 Nbd7 9.Be2 Ra5 10.0-0 Nb6 11.Nb3 Ra4 12.Rb1 Re8 13.e4=+; 8.e4 Nc6 9.h3 Be6 10.Bc3 Na5 11.Qb1 b6 12.d4 ed4 13.Nd4=+) 8...Bd7 9.e4 Ra5 10.d4 ed4 11.Nd4 Ra4 12.Bd3 Re8 13.c4=; D) 7.e4 D1) 7...Bd7 8.c3 (8.d4 ab4 9.ab4 Ra1 10.Qa1 ed4 11.Nd4 d5 12.e5 Ng4 13.Qa5=+; 8.Be2 ab4 9.ab4 Na6 10.c3 c5 11.bc5 Nc5 12.Ra8 Qa8 13.0-0=; 8.Bc3 Re8 9.ba5 Nc6 10.Qb1 Qc8 11.Be2 Na5 12.0-0 Nc6 13.Qb2=) 8...ab4 9.ab4 Ra1 10.Qa1 Be6 11.d4 Nbd7 12.Qa7 b6 13.d5=; D2) 7...ab4 8.ab4 Ra1 9.Ba1 Bg4 10.Be2 Na6 11.c3 Qd7 12.0-0 Re8 13.h3=; D3) 7...Re8 8.b5 (8.Be2 ab4 9.ab4 Ra1 10.Ba1 Nbd7 11.0-0 d5 12.Qb1 Bf8 13.Rc1=) 8...Bg4 9.Be2 c6 10.bc6 Nc6 11.0-0 Rc8 12.Rb1 d5 13.Ne5=; D4) 7...Bg4 8.b5 (8.Be2 ab4 9.ab4 Ra1 10.Ba1 Na6 11.c3 Qd7 12.0-0 c5 13.bc5=) 8...c6 9.h3 Bf3 10.Qf3 cb5 11.d4 ed4 12.Bb5 Qb6 13.Qd3=.

5.Nd2 0-0 6.Ngf3 b6 7.e4 c5 8.Be2 Nc6 9.b5 Nd4 10.Nd4 cd4 11.c4 dc3 12.Bc3 Bb7 (12...a6 13.ba6 Ba6 14.Qb3=) 13.0-0 d5 (13...Qd7 14.Qb3=) 14.ed5 (14.Be5!? de4 15.de4+=) 14...Bd6= 15.Nc4 Nd5 16.Bb2 Re8 17.Nd6 Qd6 18.Bf3 Rac8 19.Qb3 Qd7 20.g3 (20.Rfe1!? Nf4 21.Bb7 Qb7 22.f3=+) 20...Nc3 (20...Rc5 21.a4 Nc3 22.Bb7 Ne2 23.Kg2 Qb7 24.f3=+) 21.Bb7=+ Ne2 22.Kg2 Qb7 23.f3 Nd4 (23...Qc7 24.Rae1 Nd4 25.Bd4 ed4 26.Re8 Re8 27.Rf2=) 24.Bd4 ed4 25.Rfe1 Qd7 26.Qa4 (26.Re4 Re4 27.de4 Rc3=+) 26...h5 (better 26...Re3=+) 27.Qb4?? (better 27.Re4=+) 27...Rc2 28.Kh1 (28.Qd2 Rd2 29.Kf1 Qh3 30.Kg1 Qg2) 28...Rec8 (28...Qh3 29.Qf8 Rf8 30.Re2 Re2 31.Re1 Re1) 29.Rad1 (29.Qe7 Qh3 30.Qe2–+) 29...R8c3 (29...Qh3 30.Rd2 R8c3 31.Qc3 Rc3–+ (31...dc3?! 32.Rc2 h4 33.Rc3=)) 30.Qe7 Qh3 (30...Rh2! 31.Kh2 Rc2 32.Re2 Qe7 33.Rc2 Qa3–+) 31.Re2–/+ Rc1 32.Rde1?? (better 32.Rg1–/+) 32...Re1–+ 33.Re1 Rc2 (33...Rc2 34.Qf7 Kf7 35.Re7 Ke7 36.Kg1 Qg2; 33...Rd3?? 34.Qe8 Kh7 35.Qe4 g6 36.Qd3+-) 0–1. Patarcic,Domagoj (2025) – Petrusic,Toni (2115), CRO–chT U20, 2010.

5.Nd2 0-0 6.Ngf3 c6 7.e3 A) 7...Be6 8.e4 (8.Ng5 Bf5 9.e4 Bd7 10.Be2 a5 11.0-0 b5 12.c4 ab4 13.ab4=; 8.c4 a5 9.Be2 Qb6 10.Qa4 ab4 11.Qb4 Qc7 12.d4 e4 13.Ng5=+; 8.Be2 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Na6 12.Qa5 Nd5 13.Qd8=) 8...a5 9.b5 Qb6 10.d4 cb5 11.Bd3 b4 12.ab4 Na6 13.de5=; B) 7...Bg4 8.Be2 a5 9.c4 Na6 10.b5 Nc7 11.0-0 cb5 12.cb5 Rc8 13.a4=; C) 7...Nbd7 8.Be2 a5 9.0-0 b5 10.c4 Nb6 11.c5 Nbd7 12.cd6 Bd6 13.Qc2=; D) 7...a5 8.Be2 ab4 9.ab4 Ra1 10.Qa1 Na6 11.c3 Bg4 12.h3 Be6 13.d4=.

5.Nd2 0-0 6.Ngf3 c6 7.e4 A) 7...Bg4 8.Be2 (8.h3 Bh5 9.Be2 a5 10.0-0 Nbd7 11.Re1 ab4 12.ab4 Qb6 13.c3=; 8.c4 Qb6 9.d4 ed4 10.Bd4 Bf3 11.Nf3 c5 12.Be3 Ng4 13.Qd2=) 8...a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Re8 12.Rd1 Na6 13.b5=; B) 7...Nbd7 8.d4 (8.Be2 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Re8 12.Re1 d5 13.c3=; 8.c4 Qb6 9.Rb1 a5 10.Qa4 Ra7 11.d4 ab4 12.Qb4 Qc7 13.Qc3=) 8...ed4 9.Nd4 Nb6 10.c4 c5 11.N4f3 Re8 12.Be2 cb4 13.ab4=; C) 7...Re8 8.c4 (8.Be2 a5 9.0-0 b5 10.c4 ab4 11.ab4 Ra1 12.Qa1 bc4 13.dc4=) 8...a5 9.b5 Bg4 10.Be2 Qb6 11.Rb1 cb5 12.cb5 d5 13.ed5=; D) 7...a5 8.Bc3 (8.Be2 ab4 9.ab4 Ra1 10.Qa1 Na6 11.c3 Qc7 12.d4 ed4 13.Nd4=; 8.d4 ed4 9.Bd4 d5 10.e5 Ne4 11.c3 b6 12.Bd3 Nd2 13.Nd2=+; 8.b5 Bg4 9.h3 Bf3 10.Qf3 cb5 11.d4 ed4 12.Bb5 Qb6 13.Qd3=) 8...ab4 9.ab4 Ra1 10.Qa1 Bg4 11.Be2 Nbd7 12.0-0 d5 13.h3=.

5.Nd2 0-0 6.Ngf3 c6 7.g3 Bg4 (7...a5 8.Bg2 (8.c3 Nbd7 9.Bg2 d5 10.0-0 Re8 11.Qb3 Qb6 12.e4 Bd6 13.Rfe1=+) 8...ab4 9.ab4 Ra1 10.Qa1 Na6 11.c3 Re8 12.0-0 Qc7 13.e4=+; 7...b5 8.c4 (8.a4 Qb6 9.Bg2 a5 10.ba5 Ra5 11.ab5 Rb5 12.Bc1 Nbd7 13.0-0=; 8.Bg2 a5 9.0-0 Na6 10.ba5 Qa5 11.c4 Nc5 12.cb5 cb5 13.Qc2=+; 8.c3 a5 9.Bg2 Be6 10.0-0 Qb6 11.Ng5 Bf5 12.ba5 Qa5 13.c4=+) 8...a5 9.Bg2 ab4 10.ab4 Ra1 11.Qa1 bc4 12.dc4 e4 13.Nd4=; 7...Be6 8.c4 (8.Bg2 a5 9.0-0 Qb6 10.d4 ab4 11.de5 de5 12.ab4 Nbd7 13.Ne5=+; 8.e4 a5 9.Ng5 Bd7 10.Be2 Na6 11.ba5 h6 12.Ngf3 Qa5 13.0-0=+; 8.Ng5 Bd7 9.e4 Ng4 10.Ngf3 f5 11.Qe2 a5 12.h3 Nf6 13.Bg2–/+) 8...Qb6 9.d4 a5 10.Qb3 Nbd7 11.Bg2 ab4 12.Qb4 Qc7 13.de5=+; 7...Re8 8.Bg2 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Na6 12.Qa4 b5 13.Qa5=) 8.Bg2 (8.c4 a5 9.Bg2 ab4 10.ab4 Na6 11.b5 cb5 12.cb5 Nc7 13.Ra8=+; 8.h3 Be6 9.Ng5 Bd7 10.e4 h6 11.Ngf3 a5 12.Bg2 Na6 13.Bc3=+; 8.c3 a5 9.Bg2 Nbd7 10.0-0 ab4 11.ab4 Ra1 12.Qa1 d5 13.h3=+) 8...Qc8 (8...a5 9.c4 Qb6 10.Qa4 Nbd7 11.0-0 d5 12.b5 cb5 13.Qb5=+) 9.c4 Bh3 10.Rg1 (10.0-0 Bg2 11.Kg2 Qg4 12.e4 Nh5 13.Ne1=) 10...Bg2 11.Rg2 Qh3 (11...Qg4 12.Nf1 Qh3 13.Rg1=+) 12.Rg1 (12.Kf1 Qg4 13.Kg1=+) 12...Ng4 (12...a5 13.Qa4=+) 13.Qc2 (13.e4=+) 13...Nd7 14.0-0-0? (14.d4 ed4 15.Bd4 Bf6=+) 14...b5 15.c5? (better 15.Rdf1!?–/+) 15...dc5–+ 16.Bc3 cb4 17.ab4 c5 18.Qb3 cb4 19.Bb4 Bb4 (19...Nf2?! 20.Be7 Rfc8 21.Kb1 Nd1 22.Rd1–+) 20.Qb4 Rfc8 21.Kb2 Nc5 22.Rc1 a5 23.Qa3 (23.Qb5 Rcb8 24.Rc5 f6 25.Qb8 Rb8 26.Ka1 Ra8–+) 23...b4 24.Qa2 a4 25.Nc4? (25.Qd5 a3 26.Ka1–+) 25...a3 26.Na3 (26.Kb1 b3 27.Qd2 b2–+ (worse 27...Nf2 28.Nb6–+)) 26...Ra3 27.Qa3 (27.Qf7 Kf7 28.Ng5 Kf6 29.Nh3 Na4 30.Kb1–+) 27...ba3 28.Ka3 Nf2 29.Rgf1 Qe6 30.Rc3 Qb6 31.Ka2 Ra8 32.Ra3 Ra3 33.Ka3 Qb3 0–1. Dejna,Miroslaw – Olchowko,Marika (1665), Ostroda Poland, 2010.

5.Nd2 0-0 6.Ngf3 Bd7 A) 7.e4 a5 8.c3 (8.Be2 ab4 9.ab4 Na6 10.c3 c5 11.bc5 Nc5 12.Ra8 Qa8 13.0-0=; 8.d4 ab4 9.ab4 Ra1 10.Qa1 ed4 11.Nd4 d5 12.e5 Ng4 13.Qa5=+; 8.Bc3 Re8 9.Be2 ab4 10.ab4 Na6 11.0-0 b5 12.d4 d5 13.Ne5=) 8...c6 9.Be2 b5 10.0-0 Re8 11.c4 bc4 12.dc4 ab4 13.ab4=; B) 7.c3 B1) 7...Nc6 8.e4 (8.e3 a5 9.b5 Nb8 10.c4 c6 11.bc6 Nc6 12.Be2 Qc7 13.d4=) 8...a5 9.b5 Nb8 10.Qa4 Be6 11.d4 ed4 12.cd4 d5 13.e5=; B2) 7...Re8 8.e3 (8.e4 a5 9.Be2 c6 10.0-0 Qc7 11.Re1 d5 12.Nb3 a4 13.Nbd2=) 8...a5 9.Be2 b5 10.0-0 Na6 11.e4 c6 12.d4 ed4 13.Nd4=; B3) 7...a6 8.e3 (8.e4 Nc6 9.Be2 d5 10.0-0 Be6 11.Ng5 Bc8 12.Re1 Qd7 13.Qc2=) 8...Nc6 9.Be2 Re8 10.0-0 Be6 11.c4 Bg4 12.h3 Bd7 13.Qc2=; B4) 7...a5 8.e4 (8.e3 Be6 9.Be2 ab4 10.ab4 Ra1 11.Qa1 Re8 12.0-0 Qd7 13.e4=) 8...Re8 9.Be2 c6 10.0-0 Qc7 11.Re1 d5 12.Qc2 Na6 13.ba5=; C) 7.e3 a5 (7...Be6 8.Be2 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Nc6 12.b5 Nb4 13.c3=) 8.Be2 (8.c4 ab4 9.ab4 Ra1 10.Qa1 b5 11.Be2 bc4 12.dc4 Bf5 13.0-0=; 8.c3 b5 9.Be2 c6 10.0-0 Na6 11.e4 Qc7 12.d4 ed4 13.Nd4=; 8.ba5 Ra5 9.Be2 Nc6 10.0-0 Re8 11.Rb1 Qa8 12.Re1 Ra4 13.c4=+) 8...ab4 9.ab4 Ra1 10.Qa1 Na6 11.Qa5 Nb8 12.0-0 Nc6 13.Qa3=; D) 7.c4 D1) 7...Nc6 8.e3 (8.e4 Bg4 9.Be2 Qd7 10.b5 Nd8 11.0-0 Bf3 12.Nf3 Ne6 13.Qc2=) 8...a6 9.Be2 Bf5 10.0-0 Qe8 11.d4 e4 12.Nh4 Bd7 13.d5=; D2) 7...a5 8.b5 (8.e3 ab4 9.ab4 Ra1 10.Ba1 Bf5 11.Be2 Nc6 12.b5 Nb8 13.0-0=; 8.e4 ab4 9.ab4 Na6 10.Qb3 c5 11.b5 Nb4 12.Ra8 Qa8 13.Be2=; 8.Bc3 Re8 9.b5 c6 10.bc6 bc6 11.Rb1 Na6 12.e3 Qc7 13.Be2=+) 8...c6 9.bc6 Nc6 10.e4 Qc7 11.Rb1 Bg4 12.Be2 a4 13.h3=.

5.Nd2 0-0 6.Ngf3 Be6 7.e4 A) 7...Bg4 8.h3 (8.Be2 a5 9.0-0 ab4 10.ab4 Ra1 11.Ba1 Na6 12.b5 Nc5 13.Ng5=; 8.Rb1 a5 9.b5 Nbd7 10.h3 Be6 11.d4 ed4 12.Nd4 Nc5 13.Bd3=) 8...Bh5 9.Be2 a5 10.0-0 Na6 11.ba5 Nc5 12.Nc4 Ra6 13.Nfd2+=; B) 7...Nbd7 8.d4 a5 9.Bd3 ab4 10.ab4 Ra1 11.Ba1 ed4 12.Nd4 Ne5 13.Be2=; C) 7...a5 8.b5 Nbd7 9.d4 ed4 10.Bd3 Nc5 11.0-0 d5 12.e5 Nfe4 13.Nd4=.

5.Nd2 0-0 6.Ngf3 Bg4 A) 7.e3 A1) 7...Re8 8.Be2 (8.h3 Be6 9.Be2 a5 10.0-0 ab4 11.ab4 Ra1 12.Ba1 Nbd7 13.c4=; 8.Nb3 Nbd7 9.Be2 Nb6 10.0-0 Na4 11.Rb1 Nb2 12.Rb2 Nd5 13.Qd2=; 8.e4 a5 9.Be2 ab4 10.ab4 Ra1 11.Qa1 Na6 12.Qa4 d5 13.c3=+) 8...a5 9.0-0 ab4 10.ab4 Ra1 11.Ba1 Nc6 12.b5 Nb4 13.e4=; A2) 7...Be6 8.Be2 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Nc6 12.b5 Nb4 13.c3=; A3) 7...a5 8.Be2 (8.ba5 Ra5 9.Be2 Nc6 10.0-0 Qd7 11.Rb1 Rfa8 12.c4 b6 13.Nb3=+) 8...ab4 9.ab4 Ra1 10.Ba1 Nc6 11.b5 Nb4 12.0-0 Qd7 13.Qb1=; A4) 7...Nbd7 8.Be2 (8.h3 Bh5 9.Be2 a5 10.0-0 ab4 11.ab4 Ra1 12.Ba1 c6 13.c4=) 8...a5 9.0-0 c6 10.c4 ab4 11.ab4 Ra1 12.Qa1 d5 13.cd5=; B) 7.e4 a5 8.Be2 (8.b5 c6 9.h3 Bf3 10.Qf3 cb5 11.d4 ed4 12.Bb5 Qb6 13.Qd3=; 8.h3 Bd7 9.d4 ab4 10.ab4 Ra1 11.Qa1 ed4 12.Nd4 d5 13.e5=+) 8...ab4 9.ab4 Na6 10.c3 Qd7 11.0-0 Rfe8 12.h3 Be6 13.d4=.

5.Nd2 Be6 6.Ngf3 0-0 7.g3 a6 8.Bg2 Nc6 9.0-0 d5 (9...Qd7 10.Ng5=) 10.c4 (10.Ne5 Ne5 11.Be5 a5+=) 10...dc4 (10...Nd7 11.cd5 Bd5 12.Nc4=) 11.dc4 e4 (11...Nd7 12.b5 ab5 13.cb5=) 12.Ne1 (12.Ng5 e3 13.fe3 Ng4 14.Ne6 fe6+/-) 12...Qd7 (12...Bf5 13.Nc2=) 13.Qc2 (better is 13.Ne4!? Qd1 14.Rd1 Ne4 15.Be4 Bc4 16.Bc6 bc6 17.Rd2=) 13...Nd4= 14.Bd4 Qd4 15.Qc1 (15.Rd1!? e3 16.Ne4 Qc4 17.Nf6 Bf6 18.Bb7=) 15...Rad8 16.Ra2 e3 17.Ndf3 ef2 18.Rf2 Qa7 19.Nc2?? (better is 19.Ne5–/+) 19...b6 (better is 19...Ng4 20.e3 Nf2 21.Kf2 Bc4–+) 20.Ncd4 Bg4?? (better is 20...Rd6=) 21.Qd1 (better is 21.Nc6 Qa8 22.Ne7 Kh8 23.Ne5+-) 21...Bf3 (better is 21...c5 22.Rd2 cd4 (22...Rd4?! 23.Nd4 cd4 24.Rd4–/+) 23.Nd4 Bd7–+) 22.Nf3?? (better is 22.Bf3 c5 23.e3–+) 22...Rd1 23.Rf1 0–1. Dejna,Miroslaw – Szymanowski,Mateusz, VI MFSz Turniej Otwarty Poland, 2009.

5.e3 0-0 6.c4 (6.Nc3 Nc6+=) 6...Nfd7 (better is 6...a5!?–/+) 7.Nc3 c6 (7...Nc6 8.Nf3=) 8.Nf3 f5 (8...a5 9.b5=) 9.Be2+= Nf6 10.Qb3 Kh8 (10...Na6 11.0-0+=) 11.0-0 Nbd7 12.h3 Ne8 (12...Qe8 13.d4+=) 13.e4 f4 14.Rfd1 Ndf6 (better is 14...Qc7!?+/-) 15.d4+- White plans c5 15...Qc7 16.c5 (16.de5 de5 17.c5 b6 18.cb6 ab6+-) 16...ed4 17.cd6 Bd6 18.Rd4 Be5 19.Ne5 Qe5 20.Rad1 Qg5 (20...Nc7 21.Qc2+/-) 21.Na4+- Bh3?? (better is 21...Nc7+-) 22.Qh3 1–0. Janek – loser, internet, 2016.

5.e4 0-0 6.Be2 d5 7.Be5 de4 8.d4 a5 9.c3? ab4–+ 10.cb4 Bc5?? 11.dc5+- Nbd7 12.Bd4 Qe7 13.Nc3 Rd8 14.Nh3 Ne5 15.0-0 Bh3 16.g3?? Bf1–+ 17.Bf1 Nf3 18.Kg2 Nd4 19.Qe1 Nc2 20.Qb1 Na1 21.Qa1 b6 22.cb6 cb6 23.Bc4 Qe5 24.Qe1 Rac8 25.f4 ef3 26.Kf2 Ng4 27.Kf1 Nh2 28.Kf2 Qe2 (28...Qd4 29.Qe3 Ng4 30.Kf3 Qe3 31.Kg4 Rc4 32.Kh3 Rc3 33.Kg4 g6 34.b5 Qg3). Seimi Agus Eion – Alissa, ChessWorld.net, 2005.

5.e4 c6 6.Be2 Be6 (6...a5 7.Nd2=) 7.Nf3 h6 8.Nbd2 Qd7 (8...0-0!?=) 9.d4+- Qc7 (9...0-0!?+-) 10.de5+- de5 11.Be5 Bd6?? (better 11...Qc8+-) 12.Bd6 Qb6 (12...Qd6 13.e5 Qe7 14.ef6 gf6+-) 13.c4 Nbd7 (13...Qd8 14.c5+-) 14.0-0 (14.c5 Qd8 15.Nd4 Nf8+-) 14...Qd8 (14...a5 15.Qc2 0-0-0 16.e5+-) 15.e5 Ng8 16.c5 (better 16.Nd4!? Ne7 17.Ne6 fe6+-) 16...Ne7 17.Be7 (better 17.Nd4 0-0+-) 17...Qe7 18.Ne4 Rb8 (18...0-0 19.Qd4+-) 19.Qd6 (better 19.Nd6!? Kf8 20.Re1 h5+-) 19...Qd6 20.Nd6 Ke7 21.Nc4 (21.Rfe1 f6+-) 21...Rhd8 22.Rfd1 Kf8 (22...Bd5 23.Re1+-) 23.Rd6 Ke7 (23...Bd5 24.Rd1 Ke8 25.Rd2+-) 24.Rad1 Rbc8 (24...g6 25.Bd3+-) 25.Ne3 (better 25.Nd4 g5+-) 25...Rc7 (25...g6 26.Bc4+-) 26.h3 (26.Nd4 Re8 27.Bh5 g6 28.Bg6 Ba2+-) 26...Rcc8 (26...Re8 27.Bc4+-) 27.Bc4 (27.Nd4!? g6 28.f4 h5+-) 27...Nf8 28.Rd8 (28.Nd4 g6+-) 28...Rd8 29.Rd8 Kd8 30.Nd4 Kd7 31.f4 g6 32.Be6 fe6 (32...Ne6 33.Ne6 fe6 34.Nc4+-) 33.Kf2 h5 34.Kf3 b6 (34...Kc7 35.Nc4+-) 35.Nc4 Kc7 36.g4 1–0. Segelken,Peter (1910) – Bock,Richard, Schleswig Holstein–ch Seniors, 2009.

5.e4 Nc6 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 a6 9.0-0 Rb8 10.c3 b5 11.Re1 0-0 12.g3 Nd7 13.Bg2 Bf6 14.Nd2 Nb6= 15.Rf1 Na4 16.Qc2 Na7 17.Bc1+= Qd7 18.Nf3 (18…c5 19.Rb1+=). macedon (2065) – tata (2000), net–chess.com, 2008.

5.e4 Bd7 6.h3 Nc6 7.Nf3 0-0 8.Be2 d5 9.ed5= Nd5 10.Ne5 f6 11.Nd7 Qd7 12.Bg4 f5= 13.Bf3 Rae8 14.Bh5?? g6 15.Bf3?? Bf6–+ 16.Be2 Bb2 17.Ra2 Bc3 18.Kf1 Nd4 19.Qc1 Ne2 20.Qg5 Nef4 21.Nc3 Nc3 22.Ra1 Nd3! 23.cd3 Qd3 24.Kg1 Nd1 25.Kh2 Nf2 26.Rhf1 Qd6 27.Kg1 Ne4 28.Qh4 Qd4 29.Kh2 f4! 30.Rad1 Qc3 31.Rc1 Qg3 32.Qg3 fg3 33.Kg1 Rf1 34.Kf1 c6 35.Re1 Nd2 (36.Kg1 Re1#) 0–1. helmisflorin – Cruz, internet, 2009.

5.e4 Nbd7 6.Nf3 Nf8 7.c4 Ng6 8.Nc3 Be6 9.h3 Qd7 10.Qd2 Nf4 (10...0-0 11.d4 ed4 12.Nd4=) 11.Ne2 (11.d4 ed4 12.Nd4 N6h5+=) 11...N6h5 12.Rc1 Ne2 13.Qe2 Nf4 14.Qd2 0-0 15.d4 f6 16.d5 Bf7 17.g3 Nh5 18.Nh4 Bg6 (18...a5 19.ba5 g6 20.Bd3+=) 19.Bd3 f5 20.Nf5 Bf5 21.ef5 h6 22.Qe2 Qe8 23.Rb1 Bg5 24.h4 Be7 25.Bc1 Nf6 (25...Qf7!?+/-) 26.g4+- Nh7 27.f3 (27.f6 Nf6 28.g5 Nh5+-) 27...Qd8 (better is 27...Bf6!?+/-) 28.Qh2 c6 29.g5! h5 (29...hg5 30.hg5 Combination) 30.Qc2 (30.f6!? Nf6 31.gf6 Bf6 32.dc6 bc6+-) 30...cd5 31.cd5 Rc8 32.Qe2 Rc3 (better is 32...Qc7 33.Bb2 Rfe8+-) 33.Qe4 Ng5 (33...Bf6 34.Bb2 Rc7 35.g6+-) 34.hg5 (34.Bg5?! Bg5 35.hg5 Qg5+-) 34...Bg5 35.Bg5 (better is 35.Bb2 Rc8 36.Rh5+-) 35...Qg5 36.f6! Rf6 37.Qh7 Kf7 38.Qh5?? Qh5–+ 39.Rh5 Rf3?? 40.Rf5 Rf5 41.Bf5 Ra3 42.Bc8 b6 43.b5 Kf6 44.Rc1 g6 45.Rc7 e4 46.Ba6 Rd3 47.Ra7+= Rd5 48.Rb7 Rc5 49.Rb6 Ke5 50.Rc6 Kd5 51.Bb7?? g5?? 52.Rc5 Kc5= 53.Be4 Kb5 54.Kd2 Kc4 55.Bf5 Kd4+= 56.Ke2 Ke5 57.Bb1 Kf4 58.Kf2 d5 59.Kg2 Kg4 60.Kf2 Kf4 61.Kg2 d4 62.Kf2 g4 63.Kg2 Ke5 64.Kg3 Kd5 65.Kg4 Kc4 66.Kf3 Kc3 67.Bh7 ½–½. Jarmuzynska,Kamila – Gryglas,Marta, Poland–sf u15 girls (MA+WM), 2007.

5.Nf3 0-0 6.e4 a6 7.g3 c6 8.Bg2 Qb6 9.0-0 Be6 10.Nbd2 Nbd7 11.Ng5= d5 12.ed5 Bd5 13.Bd5 Nd5 14.Ngf3= Bd6 15.Re1 Rae8= 16.d4 Qc7 17.de5 Be7 18.c4+/- N5b6 19.e6 fe6 20.Re6 c5 21.Nb3?? Nc4 22.Nc5?? Nc5–/+ 23.Bd4?? Ne6–+ 24.Rc1 b5 25.Qe1 Nd4 26.Nd4 Bg5 27.Ne6 Bc1 28.Nc7 Re1 29.Kg2 Ba3 30.Na6 Rb1 31.Nc7 Bb4 32.Nb5 Bc5 33.Nc3 Rf2 34.Kh3 Rbb2 35.Ne4–+ Rh2 36.Kg4 Be7 37.Kf5 Rh5 38.Ke6 Re5 39.Kd7–+ Re4 40.Kc6 Nb6 41.Kc7 Rc4 42.Kb8 Nd5 (43.Ka7 Ra4) 0–1. marceloaraujo (1700) – kmcpherson (1845), net–chess.com, 2006.

5.Nf3 h6 6.e4 0-0 7.Be2 Nc6 8.c4 a6 9.Nbd2 Nh7 10.0-0 f5 11.Qc2 fe4 12.de4 Ng5 13.Ng5 Bg5 14.Nf3 Bg4 15.Rad1 Bf3 16.Bf3 Qe7 17.Qe2 Nd8 18.g3 Ne6 19.Bg2 c5 20.Rd3 Rad8 21.Rfd1 cb4 (21...Nd4!? 22.Bd4 cd4= (worse is 22...ed4 23.f4+/-)) 22.ab4+= 1–0. Fournier,Frederic (1725) – jorge238, Active, 2009.

5.h3 Nc6 6.Nf3 Bd7 7.e3 0-0 8.Be2 a6 (8...b5 9.0-0=+) 9.0-0= Qc8 10.Re1 h6 11.Bf1 (11.c4 b5=) 11...Nd8 (11...b5 12.e4=+) 12.Nbd2 Ne6 13.Nc4 b5 14.Na5 Bd8 15.Rc1 c5 16.c4 (16.Qd2=+) 16...Bb6 (better 16...Ba5!? 17.ba5 Rb8 18.cb5 Bb5=+ (worse 18...Rb5 19.Bc3=)) 17.Nb3 bc4 18.Rc4 Qb8 19.e4 (better 19.bc5!? Bc5 20.Be5+/-) 19...cb4 (19...Ba4 20.Qc2-/+) 20.Qd2 (20.d4 Qa7=+) 20...ba3-/+ 21.Ba3 Rc8 (21...Bb5 22.Rcc1 a5-/+) 22.Rec1 (better 22.d4!?=+) 22...Rc4-+ 23.Rc4 d5 (better 23...a5!?-+) 24.ed5=+ Nd5 25.Bb2 (better 25.Qe1=+) 25...Nef4?? (better 25...Bc7 26.Nc5 Nc5 27.Rc5 Be6-/+) 26.Be5+- Qe8 (26...Nh3 27.gh3 Qa7 28.Nbd4+-) 27.Bf4 (27.Rf4?! Nf4 28.Qf4 f6+-) 27...Be6 (27...a5 28.Be5+-) 28.Bh2 (28.Be5 a5 29.Re4 f6+-) 28...Nf6 29.Rb4 Ba7 (29...Bd8 30.Nfd4 a5 31.Qa2+-) 30.Nfd4 (better 30.Be5!? Nd7 31.Bb2 Bb8+-) 30...a5 31.Na5 Qd8 (31...Bc5+-) 32.Nac6 (better 32.Ndc6 Qf8 33.Na7 Ra7+-) 32...Qf8 (32...Qd7 33.Na7 Ra7 34.Rb8 Kh7 35.Be5+-) 33.Rb7 (better 33.Ne6 fe6 34.Na7 Ra7+-) 33...Bd4 34.Nd4 Bd5 35.Rb5 Kh7 (35...Qe7 36.Qe3 Re8 37.Qe7 Re7 38.Bd6+-) 36.Nf5 (36.Be5!? Be6+-) 36...Ra2 (36...Qe8 37.d4 Ra1 38.Nd6+-) 37.Qe3 Qa8 (37...Qd8 38.Nd6 Ra5 39.d4 Rb5 40.Bb5+-) 38.Rb8 (better 38.Be5 Bc6 39.Rb6 Nd5+-) 38...Qc6 (38...Qa7 39.Bd6+-) 39.Ne7 (better 39.Rb6 Qe8 40.Be5 Ng8 41.Ng7 Qd8+-) 39...Qc2 (39...Qd7+-) 40.Nf5 Qd1?? (40...Qc6 41.Rb6 Qe8+-) 41.Qe2 (better 41.Qc5 Nh5 42.Qf8+-) 41...Re2-+ (41...Qe2?! 42.Be2 Re2 43.Bf4=) 42.Ng3 (42.Rd8-+) 42...Re1 43.f3 Nh5! 44.Kf2 (44.Nh5 Rf1 Mate attack) 44...Ng3 45.Kg3 Rf1 46.Rd8 (46.Rh8 Kh8 47.Bg1 Qe1 48.Kf4 g5 49.Kg4 Qh4 50.Kf5 Qf4) 46...Bf3! 47.d4 (47.gf3 Qf3 Mate attack) 47...Bh5 (47...Qe1 48.Kf4 Bd1) 48.Rd6 (48.Bg1 Rg1 49.Kh2 Rh1 50.Kg3 Qe1 51.Kf4 Rf1) 48…Qe1 0-1. pillsbury (2160) - vcekota (2425), net-chess.com, 2021.

5.c4 Bg7 6.e3 0-0 7.Be2 a5 8.Nd2 (8.b5 Be6=) 8...c6 (8...ab4 9.ab4 Ra1 10.Ba1=) 9.Ngf3 Re8 (9...ab4 10.ab4 Ra1 11.Qa1=) 10.0-0 Nbd7 11.Qc2 b6 12.Bc3 ab4 (12...Qc7 13.Rfb1+=) 13.ab4 Bb7 (13...Ra1 14.Ra1 Qc7 15.d4+=) 14.Ra8 Ba8 15.Ra1 Qc7 16.Qb2 Bb7 17.Ra7 Ra8 18.Ra8 Ba8 19.Qa1 (19.Qc2 Bb7+=) 19...Bb7 20.Bd1 Qb8 (20...b5 21.Qa5 Qa5 22.ba5+=) 21.Qa2 Qa8 22.Qa8 Ba8 23.h3 Kf8 24.d4 (24.e4 b5=) 24...e4 25.Ne1 d5 26.c5 b5 (26...Ke7 27.Be2=) 27.g4 (27.f3 ef3 28.gf3 Bb7+=) 27...Ke7 (27...h5 28.g5 Nh7 29.h4=) 28.f3 ef3 29.Bc2 Bb7 30.Nef3 Nf8 (30...h6 31.Kf1=) 31.Kg2 (31.g5 Nh5=) 31...h5 (31...Ne6 32.g5 Nd7 33.h4=) 32.g5+= Ne8 (32...N6h7 33.h4+=) 33.Nb3 (33.e4 Ne6+=) 33...Nc7 34.Na5 Ba8 35.Kg3 Nfe6 36.h4 Kd7 37.Be1 Nd8 38.Bd3 Na6 (38...Ke6 39.Bd2+=) 39.Kf2 Nb7 (39...Nc7 40.Ke2+=) 40.Ke2 (40.e4 de4 41.Be4 Nd8+/-) 40...Nd8 41.Bb1 (41.e4 de4 42.Be4 Ke6+/-) 41...Ne6 42.Kd3 (42.Bd2 Nac7+=) 42...Nb8 (42...f5!?+=) 43.Bg3+/- Na6 (43...Kc8 44.Kc3+/-) 44.Kc3 Ke7 45.Bd6 (45.e4 Nac7+/-) 45...Ke8 46.Bd3 Nac7 47.Be5 Be5 48.Ne5 (48.de5?! Kd7+=) 48...Nd8 49.Ng6 (49.e4 Ke7+/-) 49...fg6 50.Bg6 Ke7 (50...Kf8 51.Bh5 Kg7 52.Nb3+/-) 51.Bh5 Bb7 (51...Nce6 52.Bf3+/-) 52.Bg4 (52.Nb7 Nb7 53.Bf3 Nd8+/-) 52...Nce6 53.Nb7 Nb7 54.Kd3 (54.Bf3 Nbd8+-) 54...Nbd8+/- 55.Ke2 (55.Bf3 Nc7+/-) 55...Nf7 (55...Kf7 56.Bf5+/-) 56.Kf2 (56.Kf3 Nfg5 57.hg5 Ng5 58.Kf4 Ne4+=) 56...Nc7 57.Kf3 (57.Bc8 Kd8 58.Bb7 Kd7+/-) 57...Na6+= 58.Kf4 Nb4 59.Bf5 Na2 60.Bc2 Nc3 61.g6 Nd8 62.Kf5 Ne6 63.h5 (63.h5 Ng7 64.Kg4+-) 1–0. Cirulis,Ilmars (1965) – Wilson,Jaimie (1655), FICGS, 2016.

5.Nd2 Bg7 6.Ngf3 0-0 7.g3 Nbd7 8.Bg2 c6 9.0-0 Ne8 10.c4 e4 11.Bg7 ef3 12.Bf8 fg2 13.Kg2 Nf8 14.e4 Qd7 15.f4 Qh3 16.Kh1 Ng7 17.Qf3 Nfe6 18.Nb3 Nc7 19.e5 Bg4=+ 20.Qf2 d5 21.Nd4 dc4 22.dc4 Rd8 23.Ra2?? Nce6 24.Nf3–/+ Nf5 25.Ng1 Qh5 26.Kg2 Rd3 27.Rd2?? Ne3–+ 28.Kh1 Rd2 29.Qd2 Nf1 30.Qf2 Qh2 31.Qh2 Nh2 (32.Kh2 Nd4–+) 0–1. Del Castillo,Lazarus – Rios,Adrian, San Fernando op, 1992.

5.Nf3 a5 =.

5.Nf3 Bg7 6.e3 0-0 7.Be2 b6 8.0-0 Bb7 9.Nbd2 Nbd7 10.c4 Qe7 11.e4 Nh5 12.Qc2 Nf4 13.Rfe1 c5 14.Bf1 g5 15.g3 Ng6 16.h3 h5 17.bc5 dc5 18.a4 Nb8 19.a5 Nc6 20.ab6 ab6 21.Qb3 Nb4 22.Ba3 Ra5 23.Bb4 cb4 24.Rab1 g4 25.hg4 hg4 26.Nh2 Bh6 27.Red1 Rfa8 28.Qb4+/- Qb4 29.Rb4 Ra2 30.Rb6 Bc8 31.Nb1 Rc2 32.Rb3 Kg7 33.Na3 Ra2 34.Nb5 R8a6 35.Rdb1 Rf6 36.R3b2 Ra5 37.Be2 Ne7 38.Bg4 Bg4 39.Ng4 Re6 40.Nc7 Rc6 41.Ne8 Kg6 42.Rb6 Kg5 43.Rc6 Nc6 44.Nh6 Kh6 45.Rb6 Rc5 46.Nc7 (46…Kg7 47.Na6+-) 1–0. Le Phi Long – Bui Hoang Duong, VIE–chT Vung Tau, 2000.

5.g3 Bg7 6.Bg2 0-0 7.Nd2 c6 8.c4 Qc7 9.Qc2 (9.Ngf3 Re8=) 9...Be6 (9...a5 10.Ngf3=+) 10.Ngf3= Nbd7 11.0-0 h6 12.Rac1 Rac8 (12...a5 13.b5=) 13.Qb1 (13.d4 e4 14.Ne4 Ne4 15.Qe4 Bc4=) 13...Qb8 (13...a5 14.d4=) 14.Qa1 Rfe8 (14...g5 15.h3=) 15.Rfe1 (15.c5+=) 15...Nf8 (better 15...g5!?=) 16.c5+- N6d7 17.cd6 (17.Ne4 dc5 18.bc5 Rcd8+=) 17...Qd6 18.Nc4 Bc4 19.Rc4 (19.dc4 Qe6=) 19...Re7 20.a4 Rce8 (20...Nb6 21.Rcc1=) 21.a5 (21.b5 cb5 22.ab5 Qb6+=) 21...f5 Black prepares e4 22.Qa2 Kh7 23.Nh4 (23.Qb3 e4 24.de4 Bb2 25.Qb2 fe4+=) 23...Nf6 Black intends e4 (23...e4 24.Bg7 Kg7 25.de4 fe4 26.Qc2=) 24.a6+= e4 25.de4 Ne4 26.Bg7 Rg7 27.Qc2 Re6 (better 27...Qd2!? 28.Qd2 Nd2+=) 28.Rd1+- Qe7 29.Bh3 (29.ab7 Qb7 30.Be4 fe4 31.Re4 Rge7+-) 29...Rf7 (29...Qf6 30.ab7 Rb7 31.Nf3+=) 30.e3 (30.ab7 Qb7 31.Bg2 Rfe7+=) 30...c5 (30...b5!? 31.Rc6 Qb4=) 31.ab7+- Qb7 32.bc5 Rc6 (32...Qc7 33.Bg2 Rc6 34.Rc1+-) 33.Bg2+- Qb5 (33...Qc7 34.Rc1 Ne6 35.Ng6 Rc5 36.Rc5 Qc5 37.Nh4 Qc2 38.Rc2+-) 34.Rc1 Rfc7 (34...Ne6 35.Be4 fe4 36.f4+-) 35.Be4 fe4 36.Qe4 (36.Re4?! Rc5 37.Re7 Re7 38.Qc5 Qc5 39.Rc5 Ne6+-) 36...Rc5?? (36...Qb8+-) 37.Rc5 Rc5 38.Qe7 (38.Qe7 Kg8 39.Rc5+-) 1–0. Vallejos,Jose Antonio – Assef,Nathaly Regina Reis, 3rd Etapa Circuito IRT LXSBC, 2014.

5.Qd4 Nc6 6.Qd1 Be7 7.e3 0-0 8.Nf3 Bf5 9.Bd3 Qd7 10.0-0 Bd3 11.Qd3 Rfd8 (11...Qe6 12.Rd1=) 12.Rd1 (12.b5 Nb8=) 12...a5 13.c3 (13.Qc3 b5=) 13...Ne5=+ 14.Qe2 Nf3 15.Qf3 Qa4 16.Nd2 Qc2 17.Nc4 (17.Rab1 d5 18.c4 dc4 19.Bf6 Bf6=+) 17...d5=+ 18.Rd2 Qa4 19.Ne5 Qe8 20.Rad1 c6 21.Qf5 Ne4 22.Rc2 g6 23.Qg4 Bf6 24.Nd3 ab4 25.ab4 Qe7 26.Qe2 Kg7 (26...Nd6 27.Rcc1–/+) 27.f3 (27.f3 Nd6 28.e4 de4 29.c4–/+) 1–0. Louro,Eugenio (2085) – Goodwin,Adam, FICGS, 2008.

5.Qd4 Nc6 6.Qd1 Bf5 7.Nf3 Be7 8.e3 0-0 9.Bd3 Bd3 10.cd3 Re8 11.0-0 Qd7 12.Re1 a5 13.b5 Ne5 14.Ne5 de5 15.Be5 Qb5 16.Bc7 Rac8 17.Bg3 Nh5 18.a4 Qd5 19.e4 Qd4 20.Nd2 (< 20.Qh5 Qa1 21.Qa5 Ra8–/+) 20...Qd3 21.Qh5 Qd2 22.Red1 Qb4 23.h3 Bc5 24.Rd7 Re7 25.Re7 Be7 26.e5 Rd8 27.Qf5 Qd4 28.Rb1 Qa4 29.e6 Bf6 30.ef7 Kf7 31.Rb7 Kg8 32.Rb5 (32.Kh2 Qc6 33.Ra7 Qd5 34.Ra5 Qf5 35.Rf5 Rd2+=) 32...Qd1 33.Kh2 a4 34.Ra5 Re8 35.Qb5 Re1 36.Qc4 Kf8 37.Ra8 Re8 38.Ra7 Be7 39.Qe4 h6 40.Be5 Qb3 41.Ra4 Kg8 42.Qc6 Rf8 43.Rg4 Rf7 44.Rg3 1–0. marekt – FABOLOUS, ChessWorld.net, 2003.

5.Qd4 Nc6 6.Qd2 Be7 (6...a5 7.b5 Ne5 8.Bd4–/+) 7.Nf3+= h6 8.b5 Nb8 9.e3 0-0 10.Bd3 Nbd7 11.0-0 Nc5 12.Nc3 b6 (12...d5 13.Rfe1+=) 13.Nd4= Re8 14.Nc6 Qd7 15.Ne7 (15.Bc4 Bb7+=) 15...Re7 16.a4 Bb7 17.h3 (17.a5 Nd3 18.cd3 a6=) 17...Rae8 18.a5 Qe6 (18...Re5 19.ab6 ab6 20.f3 Re3 21.Ne4 R3e4 22.fe4 (worse is 22.Be4 Nfe4 23.fe4 Re4–/+) 22...Nfe4 23.Qe3+=) 19.Rfe1= Nfd7 20.Bf1 (20.e4!?=) 20...Ne5+= 21.Qd4? (better is 21.e4!?+=) 21...Qg6–+ 22.Kh2 Qc2 23.Re2 Qg6 24.Nd5 Rd7 25.ab6 Nb3 (25...ab6!? 26.Qd1 Qf5–+) 26.Qd1+= Na1 27.Nc7? (better is 27.Nf4!? Qf5 28.ba7=) 27...Ree7 (27...Rc8 28.Be5 ab6 29.Ba1 Rdc7 30.Bb2–+) 28.Ba1 (better is 28.ba7 Rc7 29.Ba1–/+) 28...ab6 29.Nd5? (29.Na6 Bf3 30.Nb4–+ (30.gf3?? Nf3 31.Kh1 Qg1)) 29...Bd5 30.Qd5 Ra7 (better is 30...Qb1 31.Ra2 Qf1–+) 31.Re1 Qe6 (31...Rec7 32.f4 Nd7 33.Bd3–/+) 32.Qd4 Qf6 33.Kg1 (33.f4 Nd7–/+) 33...Ra2–+ 34.Be2 (34.f4 Nf3 35.gf3 Qg6 36.Kh1 Qg3 37.Qg7 Qg7 38.Bg7 Kg7–+) 34...Rea7 35.Bc3 Rc7 36.Bb4?? (better is 36.Kf1–+) 36...Rcc2 37.Kf1 Nc4 38.Qf6 gf6 39.Bc4 Rc4 40.Bd6 Rb2 41.Bf4 Kg7 42.g4 Rb5 43.Rd1 Rb2 44.Kg2 Rcc2 45.Bg3 b5 46.h4? b4–+ 47.g5 Rc5 48.gf6 Kf6 49.Rd6 Kg7 50.Rb6 b3 51.Bd6 Rd5 52.e4–/+ Rh5 53.Be7 Rb1 54.Bf6 Kh7 55.f4 Rc5 56.f5 Rc2 Black prepares the advance b2 57.Kg3 Rc8 58.h5 b2 59.Rb2 Rb2 60.Bb2 Rg8 61.Kh4 Rg2 62.Bf6+= Kg8 63.Kh3 Rg1 64.e5 Kf8–/+ 65.Bh4 Rg8 66.e6 fe6 67.fe6 Ke8 68.Bf6 Kf8 69.Bh4 Ke8 70.Bf6 Kf8 ½–½. Ivanets,Vladimir – Molotkov,Valentin, 6th Khanty–Mansiysk Russia, Open, 2010.

5.Qd4 Nc6 6.Qf4 Be7 7.e3 0-0 8.b5 Na5 9.Nd2 c5 10.Rd1 Be6 11.Ndf3 d5 12.Ng5 c4 13.e4 h6 14.Ne6= fe6 15.ed5 ed5 16.Be2 Qb6 17.Bd4 Bc5 18.a4?? Bd4?? 19.Qd4=+ Qd4 20.Rd4 Rae8 21.Nh3 g5 22.f4= g4 23.Nf2 Rf7 24.0-0?? Re2–+ 25.Rc1 Rfe7 26.g3 Re1 27.Re1 Re1 28.Kg2 Re2 (29.Rd1 Rc2–+) 0–1. Fischer,Detlev – Vogt,A, BdF, 1982.

5.Qd4 Be7 6.e4 Nc6 7.Qc3 0-0 =.

5.Qd4 Be7 6.Nf3 0-0 7.e3 c5 8.bc5 dc5 9.Qd8 Rd8 10.Bd3 a6 11.Nbd2 b5 (12.Rd1 Bb7=). Woschkat,Karl_Heinz (+) – Fischer,Detlev, RSS7E–11 remoteschach.de, 2003.

5.Qd4 Be7 6.g3 0-0 7.Bg2 Nc6 8.Bc6 bc6 9.Nd2 a5 10.ba5 c5 11.Qc3 h6 12.Rd1 Qd7 13.Nb3 Qb5 14.Nf3 Bh3 15.Rg1 Rfe8 16.Nfd2 Bf5 17.e4 d5 18.a4 Qa6 19.g4? Be4–+ 20.Ne4 d4 21.Nd4 Ne4 22.Qd3 c4 23.Qf3 Bb4 (24.Kf1 c3 25.Kg2 cb2–+) 0–1. Poulsen,Rene – Kopp,Jean Raymond, IECG, 2004.

5.Bd4 c5 6.Bc3 d5 =.

5.Bd4 c5 6.bc5 dc5=+ 7.Bf6 gf6 8.Qd8 Kd8 9.Nc3 +=.

5.Bd4 c5 6.bc5 dc5 7.Bf6 Qf6 8.c3 Nc6 9.e3 Bd7 10.Nf3 0-0-0 11.Qb3 g5 12.Bc4 g4 13.Nfd2 Na5 14.Qa2 Nc4 15.Qc4 h5 16.Nb3 Qc6 17.0-0?? (better is 17.Qf1–+) 17…Be6 (17...Be6 18.Na5 Bc4 19.Nc6 bc6–+) 0–1. Mavizi,Hamid – Hallengren,Boris (2055), IECG, 2007.

5.Bd4 c5 6.bc5 dc5=+ 7.Bf6 Qf6 8.Nd2 Bg4 9.Ngf3 Nc6 10.e3 Rd8 11.Be2 Be7–/+ 12.0-0 0-0 13.Rb1 b6 14.h3 Bf5–/+ 15.e4 Be6 16.Qc1 Bd6 17.c3 Bf4 18.Rd1 Qg6 19.Kh1 Qh6 20.Bf1 Bg4–+ 21.Qc2 Ne5 22.Kg1 Rd6 23.Ne5 Bd1 24.Rd1 Be5 25.Bd3 Rfd8 26.Nc4 Rd3! 27.Rd3 Rd3 28.Ne5 Rd2 29.Qb3 Qf4 30.Nf3 Rd3 31.e5 Kf8 32.Qc2 Qc4 0–1. Ehrlich,Stefan – Rohde,Friedhelm, 2005.

5.Bd4 Be7 6.Nf3 0-0 7.Nc3 Bg4 8.b5 c5=+ 9.Bf6? Bf6–+ 10.Rb1 Bf3 11.Ne4 Be4 (12.Qd2 d5–+) 0–1. bicycle – savage13, ChessWorld.net, 2007.

5.Bd4 Bf5 6.Nf3 Be7 7.e3 Nbd7 8.Bd3 Bd3 9.Qd3 0-0 10.0-0 h6 11.c4 a6 12.Nbd2 c6 13.Ne4 Re8 14.Nf6 Bf6 15.Rad1 Bd4 16.ed4 Nf6 17.Rfe1 Re1 18.Re1 Qd7 19.h3 Re8 20.Re8+= Ne8 21.Kf1 Nf6 22.c5 d5 23.Ne5+= Qe6 24.a4 Ne4= 25.b5 ab5 26.ab5 cb5 27.Qb5+= Qe7 28.c6 bc6 29.Qc6= Qd6 30.Qe8 Qf8 31.Qd7 Nf6 32.Qc6 Qe8 33.Qd6 Qe6 34.Qd8 Qe8 35.Qd6 Qe6 36.Qb8 Qe8 37.Qd6 ½–½. purplepeace (2100) – mariusch (1920), net–chess.com, 2006.

5.ba5 Ra5 6.Bc3 Ra8 7.Nf3 Bd7 8.Bc4 Nc6 9.Bb2 e4–/+ 10.Ng5 d5–+ 11.Bb5 Bd6 12.Nc3 0-0 13.a4 h6 14.Nh3 Bh3 15.gh3 Ne5 16.Be2 Qd7 17.h4 Qh3 18.Nb5 Qg2 19.Rf1 Qh2 20.Nd6 cd6 21.Qb1 Rfb8 22.Bc3 Qh4 23.Qb6 Ne8 24.Qb5 Qg5 25.Bd4 Qf5 26.Rg1 Nf6 27.Be5 de5 28.Qb4 Qd7 29.c3 Kh7 30.a5 b6! 31.a6 Qc7 32.Qb2 g6 33.Rh1 Ra7 34.Qb3? Kg7 35.Rh4? h5 36.Qb5 Rba8 37.Rh1 Rh8 38.Qb3 Rd8 39.Qb2 Nd7 40.Rg1 Kh6 41.Rb1 Rb8 42.Qb3 Qd6 43.Qa2 Nc5 44.Rb2 f6 45.Qa1 Qd7 46.Qb1 Qc7 47.Qa2 d4! 48.ed4 ed4 49.Bc4 Nd3 50.Bd3 ed3 51.Qa4 Qe5 52.Kf1 Qe2 (53.Kg2 Qe4 54.Kh2 Qe5 55.Kh1 Qf5–+) 0–1. Comet B50 – Comet B25, 2003.

5.b5 b6 6.c4 Bb7 7.Nf3 Nbd7 8.d4 ed4 9.Bd4 Be7 10.Nc3 0-0 11.Be2 Ne4 12.Ne4 Be4 13.Nd2 Bb7 14.0-0 Bf6 15.Bf3 Bf3 16.Qf3 Bd4 17.ed4 Nf6 18.Rfe1 d5 19.Rac1 Qd7 20.Qd3 dc4 21.Qc4 Rfd8 22.Nf3+/- Rac8 23.Ne5 Qd5 24.Qc3 Qb5 25.Nc6 Rd7 26.Na7+/- Qa6 27.Nc8 Qc8 28.Qc6 Rd8 29.Qc7+- Qc7 30.Rc7 Rd4?? 31.Rc8 (31...Rd8 32.Rd8 Ne8 33.Rde8#) 1–0. pierre – stigu, internet, 2007.

5.b5 b6 6.c4 Bb7 7.Nf3 Be7 8.g3 (8.d4!? ed4 9.Nd4+=) 8...0-0=+ 9.Bg2 Nbd7 (9...e4 10.Ng1=+) 10.0-0 a4 (10...e4!? 11.Ne1 Ne5=) 11.d4 ed4 12.ed4 Ne4 13.d5 (13.Nc3 Re8+=) 13...Nec5 14.Qc2 Nf6 15.Nbd2 h6 16.Nd4 Ng4 17.h3 Ne5 18.Nc6 Bc6= 19.dc6 Bf6 20.Rae1 Re8 21.Bd5 Re7 22.f4 Ng6?? 23.Re7 Ne7 24.Bf6+/- gf6 25.Re1 Nd5 26.cd5 Qf8 27.Qc3 Kg7 28.Nf3 Re8 29.Nh4 Re1 30.Qe1 Kh7 31.Nf5 Nd3 32.Qe2 Nc1 33.Qh5 Ne2?? 34.Kf2 Nc3 35.g4 Nd5= 36.g5 fg5 37.fg5= Nf4 38.Qg4 Nd3 39.Kg2 Qg8 40.Nh6= Qg6 41.Qf5 Qf5 42.Nf5 Kg6 43.Nh6?? Ne5 44.h4? Nc4 45.Kf3?! Na3 46.Ke2 Nb5 47.Kd3 a3 48.Kc2 d5 49.Kb3 (49...f6 50.Ng4 fg5 51.hg5–+) –+. slavisa3 – ontherooks, Live Game Caissa's Web, 2004.

5.b5 b6 6.Qf3 Ra7 7.h3 Bb7 8.Qd1 Nbd7 9.Nf3 g6 10.d4 Qe7 11.de5 de5 (11...Ne5 12.Be2+=) 12.Nc3 Bg7 13.Be2 0-0 14.0-0 Raa8 15.a4 (15.Bc4 Rfd8+=) 15...Rad8 16.Qc1 Nc5 17.Nd2 Rd7 18.Nb3 (18.Ba3 Rfd8 19.Nb3 Nb3 20.cb3 Qe8+=) 18...Nb3 (18...Nfe4 19.Ne4 Ne4 20.Qe1–/+) 19.cb3+= Rfd8 20.Ba3 Qe6 21.Bc4 Qf5 22.Ra2 Qg5 23.f3 Nh5 24.e4 Qh4 (24...Nf4!? 25.Kh2 Bh6–/+) 25.Qe1+= Ng3 26.Ne2 Ne2 27.Qe2 Bh6 28.Bc1 Bc1 29.Rc1 Qf4 30.Re1 Rd2 (30...Kg7 31.Qe3+=) 31.Rd2= Rd2 32.Qf1 Rc2 (32...Kg7 33.Re2+=) 33.Kh1 Bc8 34.Rd1? (34.Re2 Rc3 35.Re1+=) 34...Be6?? (better is 34...Bh3 35.Be2 Be6–+) 35.Qd3+= Rc1 36.Be6 fe6 37.Qd8 Kf7 38.Qd7 Kf6 39.Qd8 Kg7 40.Qe7 Kh6 41.Rc1 Qc1 42.Kh2 Qf4 43.Kg1 Qc1 ½–½. Komandera,Pawel – Zylinski,Piotr, Mistrzostwa Miedzywojewodzkie Juniorow Poland, 2012.

5.b5 Nbd7 6.Nc3 g6 7.Nf3 Bg7 8.Be2 0-0 9.0-0 Nb6 10.d3 Re8 11.Qd2 d5 12.a4 Bg4 13.h3 Bf5 14.Rfe1 Qd7 15.g4+= Bg4 16.hg4 Qg4 17.Kh1 e4 18.Rg1 Qh3 19.Nh2 Qh4 20.Rg2 Rad8 21.Kg1 ed3 22.cd3 d4 23.ed4 Nbd5 24.Nd5 Nd5 25.Rg4 Qe7 26.Re4 Qd7 27.Ng4 f5 28.Re8 Re8 29.Ne5 Qe7 30.Bf3 Nb4 31.Bb7 h6 32.Qc3 Qg5 33.Bg2 h5 34.Qc7 Re7 35.Qa5 Be5 36.de5 Nd3 37.Qd8 Kh7 38.Ba3 Nf4 39.Qe7 (39…Qe7 40.Be7 Ne2 41.Kh2+-) 1–0. pierre – torbjorn, internet, 2008.

5.b5 Nbd7 6.c4 Be7=+ 7.Nc3 0-0 8.Nf3 Re8 9.Be2= c6 10.0-0 e4 11.Nd4 Ne5 12.f4 ef3 13.Nf3 Be6 14.Qa4 Rc8 15.bc6 bc6 16.Nd4 Bd7 17.Nf5 Rb8 18.Nd1 Bf8 19.Bf3?? Bf5–+ (20.Bc6 Bd7 21.Bd7 Qd7 22.Qa5 Nc4–+) 0–1. Baer,Werner – Schulz,Hans_Juergen, TT–08 ETC, 2003.

5.b5 Be6 6.Nf3 Nbd7 7.Be2 Be7 8.0-0 0-0 9.Ng5 Nc5 10.d4 Na4 11.Ne6 fe6 12.Bc1 ed4 13.ed4 d5 14.Bd3 Qd6 15.Re1 Nd7? 16.c4+- Nab6? 17.c5 Nc5 18.dc5 Qc5 19.Be3 Qd6 20.Qh5 h6 21.Bh6! +-. b4_player (2170) – martin315 (1880), GameColony.com, 2004.

5.b5 Be6 6.Nf3 Nbd7 7.Be2 h6 8.0-0 Be7 9.d4+= e4 10.Nfd2 d5 11.c4 c6 12.Nc3 0-0 13.Rb1 Qc7 14.bc6 bc6= 15.cd5 cd5 16.Nb5 Qb8 17.a4 Rc8 18.h3 Bf5 19.Qb3 Bb4 20.Bc3 Nb6 21.Bb4+/- ab4 22.Ra1 Bd7 23.Qb4 Bb5 24.Bb5 Rc2 25.Nb3 Kh7 26.Nc5+- Nc4 27.Qb3 Rb2 28.Qc3 Qb6 29.Bc4 dc4 30.Qc4 Ra7 31.Ra2 Rb4 32.Qc2 Rc7 33.a5 Qc6 34.Rb1 Qb5 35.Rb4 Qb4 36.Qb2 Qe1 37.Kh2 Nd7 38.Ra1 Qa1 39.Qa1 Nc5 40.dc5 +-. orane – linear, caissa.com, 2006.

5.b5 Be7 6.c4 0-0 7.Nc3 Bf5 8.Nf3 Nbd7 9.Be2 e4 10.Nd4 Bg6 11.0-0 Nc5 12.a4 d5 13.cd5 Nd5 14.Nd5 Qd5 15.Rc1 Qa2 16.Bc3 Qa4=+ 17.Qa4 Na4–/+ 18.Ba1 Nc5 19.Rc2 Bd6 20.Rfc1 Nd3 21.Bd3 ed3 22.Rc3 a4 0–1. mgriffin (1815) – mirage (2145), net–chess.com, 2001.

5.b5 Be7 6.c4 c6 7.d4 ed4 8.Bd4 0-0 9.Nf3 Bg4 10.Bd3 Nbd7 11.h3 Bh5 12.0-0 Re8 13.g4 Bg6 14.Bg6 fg6 15.Nc3 c5 16.Bf6 Bf6 17.Qd5 Kh8 18.Rac1 Nb6 19.Qd3 19...Rf8 20.Nd2 Bc3 21.Rc3 Qc7 22.f4 Rad8 23.e4 Rf7 24.Rcc1 Rdf8 25.f5 gf5 26.ef5 d5 27.cd5 Rd8 28.Rfe1 Rff8 29.d6 Rd6 ½–½. Woschkat,Karl_Heinz – Puechert,Wolfram, DESC, 2000.

5.b5 Bg4 6.Be2 Be6 7.Nf3 Nbd7 8.0-0 Nb6 9.a4 h6 10.d3 Be7 11.c4 0-0 12.Nc3 c6 13.Qb3 Qc7 14.Ba3 c5 15.Bb2 Nbd7 16.Nd2 b6 17.f4 ef4 18.ef4 Bf5 19.Bf3 Rae8 (worse 19...Bd3 20.Ba8 Ra8 21.Rfe1+/-) 20.Qc2 Bd8 21.Bc6 h5 22.Nde4 Re6 23.Ng3 Bh7 24.f5 Re7 25.Nd5 Nd5 26.Bd5 Kh8 (better 26...h4 27.Nh5 Re5+-) 27.Nh5 f6 28.Qf2 Ne5 29.Qh4 Nd3 30.Nf4 Nf4 31.Rf4 (31.Qf4 Re2 32.Ra3 Rb2+-) 31...Ref7 32.Re1 Qd7 33.Qh5 g6 34.fg6 Rg7 35.Rh4 (35.Rh4 Qc7 36.Re3 Rfg8 37.Reh3 Re8 38.Qh7 Rh7 39.Rh7 Qh7 40.Rh7) 1-0. marekt – boqsa, ChessWorld.net, 2021.

5.Bc4 Be7 6.Ne2 0-0 7.Nbc3 c6 8.0-0 d5–/+ 9.Ba2 Be6 10.d4 e4 11.f3 ab4 12.ab4 ef3 13.gf3 Bb4 14.Rf2 Re8 15.Rg2 Nbd7 16.Qf1? Bh3 17.Rg7 Kg7 18.Qh3 Re3 19.Qg3 Kh8 20.Kf2 Qe7 21.Re1 Bc3 22.Bc3 0–1. mgriffin (1870) – dsgman, net–chess.com, 2001.

5.Nf3 e4 6.Nd4 Be7 7.b5 0-0 8.c4 (8.Nc3 c5 9.bc6 Nc6=) 8...c5 (8...d5 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3=) 9.Ne2 Nbd7 (9...Be6 10.Nf4 Nbd7 11.Qc2=) 10.Qc2 Nb6 (10...Ng4 11.Nf4 Nb6 12.Nc3+=) 11.Ng3 Be6 12.Be2 Qd7 13.0-0 (13.Ne4 Ne4 14.Qe4 Nc4 15.Bc4 d5=+) 13...Rad8 14.Rd1 d5 (14...Rfe8 15.d3 ed3 16.Bd3=) 15.d3 (15.cd5 Qd5 16.Bc3 Qb3 17.Qb3 Bb3 18.Ba5 Bd1 19.Bb6 Bb3 20.Bd8 Rd8+=) 15...ed3=+ 16.Bd3 Bg4 (16...Qc7!? 17.cd5 Nbd5=) 17.f3+= Be6 (worse 17...dc4 18.Bh7 Nh7 19.Rd7 Bd7 20.Nd2+-) 18.Nc3 g6 (worse 18...dc4 19.Bh7 Nh7 20.Rd7 Rd7 21.Nce4+-) 19.Rac1 (19.cd5 Nbd5 20.Nd5 Nd5+=) 19...Rfe8 (19...Qc7 20.cd5 Nbd5 21.Nd5 Rd5 22.Ne2+=) 20.Bf1 (20.cd5 Nbd5 21.Nd5 Nd5+- (21...Bd5? 22.Bf6 Bf6 23.Bc4+-)) 20...Qc8 (20...d4 21.ed4 cd4 22.Nce4+-) 21.cd5 Bd5 (21...Nbd5 22.Nd5 Bd5 23.e4=) 22.Nd5+= Nfd5 (22...Rd5 23.Rd5 Nbd5 24.Qd2+=) 23.e4 Nf6 24.a4 Qc7 (24...Rd1 25.Rd1 Qc7 26.Nh1+=) 25.Nh1 (25.Bc3 Rd1 26.Rd1 Ra8=) 25...Rd1 (25...Nfd7 26.Bc3=) 26.Rd1+= Nfd7 27.Nf2 c4 28.g3 (28.Bc3 Ra8=) 28...Bb4 (28...Bf6 29.Bf6 Nf6 30.Qc3=) 29.Kg2 (29.Bd4!?+=) 29...c3= 30.Bc1 Rc8 31.Ng4 (31.Be3 Ne5=) 31...Bf8 32.Ne3 (32.Bf4 Qc5=) 32...Nc5 (32...Re8 33.Be2=) 33.Qc3 Nba4 34.Qc2 Nb6 35.Bb2 (35.Ng4 Qe7 36.e5 a4=) 35...Ne6= 36.Qf2 (36.Qd2 Rd8 37.Nd5 Nd5 38.ed5 a4=) 36...Bc5 37.Qd2 Be3 38.Qe3 Qc2 39.Rd2 Nc4 40.Bc4 (40.Rc2?? Ne3 41.Kf2 Ng4 42.fg4 Rc2 43.Ke3 Rb2–+) 40...Qc4 41.Qb6 Qc7 42.Qc7 Rc7 43.Bf6 Rc5 (43...a4 44.Kf2=) 44.b6 Rc6 45.Ra2 Nf4 46.gf4 Rf6 47.Kg3 (47.Ra5 Kg7=) 47...Rb6 (47...a4 48.Ra4 Rb6 49.Ra5=) 48.Ra5 Kg7 49.Rd5 (49.f5 Rb2=) 49...Rb3 50.f5 (50.h3 b5=) 50...b5 51.Kf4 (51.fg6 hg6 52.Kf4 Rb1=) 51...b4 52.e5 (52.fg6 hg6 53.Rb5 Rb1=) 52...Rc3 (52...gf5 53.Rb5=) 53.f6 Kh6 54.h4 Rc4 55.Ke3 b3 (55...Rh4?? 56.e6 fe6 57.Rd8+-) 56.Rb5 g5 (56...Rh4? 57.e6 fe6 58.Rb8+-) 57.hg5 ½–½. Denisov,Timofey (2000) – Permykov,Andrey (2010), FICGS, 2013.

5.Nf3 Be6 6.ba5 Ra5 7.Nc3 Nc6 8.d3 Be7 9.Be2 0-0 10.0-0 Qd7 11.Qd2 Rfa8 12.Rfb1 d5 13.Nd1 Ba3 (13...d4!?–/+) 14.Ba3 Ra3 15.Ra3 Ra3 16.c4? (better is 16.Rb7!? d4 17.c4+=) 16...dc4–+ 17.dc4 Qd2 18.Nd2 Ra2 19.Rb2 Rb2 20.Nb2 Na5 21.f3 Kf8 22.Kf2 Ke7 23.e4 Nd7 24.Na4 b6 25.Nc3 Nc5 26.Nd5 Kd6 27.Nb4 (27.f4 ef4 28.Nf4 Bd7–/+) 27...Ncb3 28.Nb3 Nb3 29.Nd5 Nd4 30.Ke3 (30.Bd3 g5–/+) 30...c6 31.Nb4? Kc5?? 32.Nd3?? Kd6 33.g3?? c5 34.f4?? f6 35.f5?? Bc4–+ 36.g4 Bd3 37.Bd3 b5 38.Bb1 c4 39.h4 h6 40.Ba2 Kc5 41.Kd2 b4 42.Bb1 Nf3 43.Ke3 Nh4 0–1. Fournier,Frederic (1985) – locuas (1980), Echecs21, 2003.

5.c4 b5 6.Nc3 Bb7 7.cb5+/- ab5 8.Bb5 Nbd7 9.Nf3 c6 10.Be2 d5 11.d3 Bd6 12.0-0 0-0 13.h3 Qc7 14.Nh2 e4 15.d4?? Bh2–+ 16.Kh1 Ba6 17.Ba6 Ra6 18.g3 Bg3! 19.fg3?! Qg3 20.Qe2 Qh3 21.Qh2 Qe3 22.Qe2 Ng4 23.Qg4= Qd4?? 24.Nd1+- Qd2?? 25.Qg7 (25.Qd7? c5 26.Bg7 Kg7–+) 1–0. tycho – CYTO, playchess.de, 2002.

5.c4 b6 6.Nc3 Bb7 (6...Be7 7.Nf3 0-0 8.Be2 Ra7 9.d4 Nbd7 10.0-0 Bb7 11.d5 Re8+=; 6...c6 7.d4 ed4 8.Qd4 Be7 9.Bd3 Be6 10.Rd1 c5 11.bc5 bc5+=) 7.d4 ed4 8.ed4 Be7 9.Nf3 d5 10.c5 Nc6 11.Be2 bc5+=.

5.c4 b6 6.d4 ed4 (6...Nbd7 7.Nc3 Bb7 8.Nf3 ed4 9.Qd4 Bf3 10.gf3 g6 11.Bg2 Bg7+=; 6...e4 7.Nc3 c6 8.d5 Be7 9.dc6 Nc6 10.Ne4 Ne4 11.Qd5 Nf2+=; 6...Qe7 7.Be2 a5 8.b5 ed4 9.Bd4 Nbd7 10.Nc3 Ne5 11.Nd5 Nd5+-) 7.Qf3 Ra7 8.Bd4 Be7 9.Bd3 Bg4 10.Qg3 Nc6 11.Nf3 Be6=.

5.c4 b6 6.Nf3 Bb7 (6...Be7 7.Nc3= 0-0 8.d4 ed4 9.Nd4 c5 10.Nc2 Bb7 11.Qd2 Re8=; 6...e4 7.Nd4 c5 8.Nc2 cb4 9.Nb4 Nbd7 10.d3 Nc5 11.de4 Bg4+=; 6...c6 7.Nc3 Be7 8.d4 e4 9.Nd2 d5 10.Be2 0-0 11.0-0 Be6=; 6...Nc6 7.d4 e4 8.Nfd2 Bf5 9.Nc3 Be7 10.Qc2 0-0 11.Nde4 Ne4+-; 6...Qe7 7.d4 e4 8.Nfd2 Bg4 9.Be2 Be2 10.Qe2 Nbd7 11.d5 Ne5+=) 7.Nc3 (7.d4 ed4 8.Nd4 Nc6 9.Nc6 Bc6 10.Nc3 Be7 11.Nd5 a5+=) 7...Nbd7 (7...e4 8.Nd4 c5 9.Nf5 Qd7 10.Ng3 Qe6 11.Nce2 Qe7+=) 8.Be2 (8.d4 ed4 9.Qd4 Bf3 10.gf3 g6 11.f4 Bg7+=) 8...Be7 9.0-0 (9.d4 0-0 10.0-0 ed4 11.Qd4 a5+=) 9...0-0 10.Qc2 (10.d4 Re8 11.Qc2 a5+=) 10...c5 11.d4 (11.Qf5 Qc7=) 11...Re8 (11...cd4 12.ed4 Qc7 13.Rfe1+=) 12.Rfd1 (12.d5 Rc8+=) 12...Qc7 (12...cd4 13.ed4 Qc7 14.Qf5=) 13.de5 de5 14.Nd5 Nd5 (14...Bd5 15.cd5 e4 16.Nh4=) 15.cd5+= e4 (15...Rac8!?+=) 16.Qe4+- Bf6 17.Qc2 Rad8 (17...Qd6 18.Bf6 Nf6 19.bc5 bc5 20.Rac1+-) 18.d6+- Qc6 19.Rab1 Bb2 20.Rb2 Re6 (20...b5!?+-) 21.b5+- ab5 22.Bb5 Qc8 23.Ng5 Threatening mate... how? 23...Rg6 24.Qf5 Bg2 (24...Nf6 25.d7 Qc7 26.Bc4 Rg5 27.Qg5+-) 25.Bd3 (25.Qf7 Kh8 26.h4 Bb7+-) 25...Bf3 (25...Rf8 26.Qf4 f5 27.Bc4 (27.Bf5?! Be4 28.Bd7 Qd7+-) 27...Kh8 28.Kg2+-) 26.Qf7 (26.Qf3?! Ne5 27.Qe4 Rdd6=) 26...Kh8 27.Bg6 (27.Qf3?! Rg5 28.Kh1 Ne5+-) 27...Ne5 (27...Bd1 28.Bf5 Qa8 29.Bd7 Rf8+-) 28.d7 (28.Nf3 Qg4 29.Kf1 Nf7 30.Bf7 Qf3–+) 28...Qc7 (28...Qa8 29.Qe8 Re8 30.de8R Qe8 31.Be8 Bd1+-) 29.Qe8! (29.Qe8 Re8 30.de8Q) 1–0. Sternik,Ryszard (1965) – Onufrijuk,B (2000), corr cup "Warmia i Mazury" Poland, 1999.

5.c4 Nc6 6.Nc3 Bf5 7.Be2 Be7 8.g4 Bg6 9.g5 Nd7 10.h4 h5 (10...h6!?=+) 11.d3 Nb6 12.e4 (12.Nd5 Nd5 13.cd5 Nb8=) 12...Nd4 13.Nf3 Ne2 14.Qe2 Qd7 (14...0-0 15.Nd5=) 15.Nd5 (15.c5 dc5 16.Ne5 Qd8=) 15...Nd5 16.cd5 c5 (16...a5 17.ba5 Ra5 18.Bc3=) 17.dc6 (better 17.bc5!? f6 18.gf6 gf6 19.cd6 Qd6 20.d4 ed4 21.Nd4+-) 17...bc6= 18.Rd1 (18.d4 ed4 19.Nd4 0-0+=) 18...0-0 19.d4 ed4 20.Nd4 c5 (20...Rfe8!? 21.f3 d5-/+) 21.bc5= dc5 22.Nf5 Qe8? (better 22...Qb7!? 23.Ng7 Rfb8+=) 23.Ng7 (23.Bg7 Bf5 24.Bf8 Be4 25.Qe4 Bf8+-) 23...Qb5 24.Qb5 ab5 25.Nf5 (25.Rd7 Bd8 26.f3 c4+/-) 25...Rae8 (25...Bf5 26.ef5 c4 27.Rh3+=) 26.0-0 (26.Ne7 Re7 27.f3+/-) 26...Bd8? (26...Bf5 27.ef5 Rd8 28.Rb1+/-) 27.Nh6 (better 27.Bg7!? Bc7 28.Bf8 Kf8 29.Rfe1+-) 27...Kh7+/- 28.f3 Bc7 29.Kg2 Rd8 30.Nf5 (30.Bf6!? Rd1 31.Rd1+/-) 30...Bf5+= 31.ef5 c4 32.Bc3 Bf4 (32...Rfe8 33.Rfe1 Re1 34.Re1+= (34.Be1?? Rd1 35.Kf2 Rd3-+)) 33.Rd4 (better 33.Rfe1!? Rd6 34.g6 Kg8 35.Bb4 Rd1 36.Rd1+-) 33...Rd4= 34.Bd4 Re8 35.Re1?? (better 35.Bf6=) 35…Re1-+ 0-1. black_bishop_88 (2510) - minawolf (2430), lichess.org, 2020. (=1.a3 e5 2.b4 a6 3.Bb2 d6 4.e3 Nf6)

5.c4 Nc6 6.Nf3 Bg4 7.h3 Bh5 8.g4 Bg6 9.d4 e4 (9...ed4!? 10.ed4 d5=) 10.Nh4 Ne7 11.g5 Nd7 12.Ng6 Ng6 13.Qg4 Qe7 14.Bg2 h5 15.Qe4 Qe4 16.Be4 c6 17.d5 Nde5 18.Nd2 Be7 19.f4 Nd7 (19...cd5 20.cd5 (20.fe5?! de4 21.ed6 Bg5+-) 20...Nd7 21.Bg7+-) 20.dc6 bc6 21.Bc6 Rc8 22.b5 ab5 23.cb5 Nh4 24.a4 Nf5 25.e4 Ng3 (25...Ne3 26.Kf2 Nc2 27.Rab1+-) 26.Rg1 h4 27.Bg7 Rg8 28.Bd4 Kd8 29.a5 f6 30.Bd5 Rf8 31.g6 Nc5 32.a6 Nd3 33.Kd1 Nf4 34.g7 Re8 35.a7 Nd5 36.a8Q Ra8 37.Ra8 Kd7 38.Re8 Ne3 39.Be3 (39...Ke8 40.g8Q Kd7 41.Nc4 Bf8 42.Qf7 Kc8 43.Qf8 Kc7 44.Qe7 Kc8 45.Nd6 Kb8 46.Qb7#) 1–0. Marre – Rosochacz, zagraj.pl, 2003.

5.c4 Nc6 6.h3 Ne4 7.Nf3= f6 8.d4 ed4 (9.Nd4 Nd4 10.Bd4 c5=). thedesertfox (1900) – valerypavlovich (2100), net–chess.com, 2004.

5.c4 Bd7 6.Nc3 Nc6 7.Nf3 Be7 8.d4 ed4 9.ed4 0-0 10.Be2 h6 11.0-0 Nh7 12.d5 Ne5 13.Ne5 de5 14.Re1 Bf6 15.Bd3 Re8 16.c5 c6 17.d6 Ng5 18.Qc2 Kh8 19.Na4 b5 20.cb6 c5? (better is 20...e4 21.Be4 Bb2 22.Nb2 Ne4 23.Re4 Re4 24.Qe4 Qf6+-) 21.Nc5 Bb5 22.Bb5 ab5 23.b7 Rb8 24.d7 Re7 25.Qf5 1–0. Fournier,Frederic (2450) – Laurent62 (1720), echecsemail.com, 2010.

5.c4 Nbd7 6.Nf3 b6 7.Be2 Bb7 8.d3 c5 9.Nbd2 Be7 10.0-0 0-0 11.e4 a5 12.bc5 bc5 13.Bc3 Bc6 14.Qc2 Rb8 15.Rfb1 Rb1 16.Rb1 a4 17.Qb2 Qc7 18.Nf1 Rb8 19.Qc2 Nb6 20.Ne3 Bd7 21.Ba5 Bd8 22.Qb2 Qa7 23.Bb6 Rb6 24.Qc2 Qb7 25.Rb6 Qb6 26.Nd5 Nd5 27.ed5 Qb3 28.Bd1 (28.Qc1 Ba5+=) 28...Qc2 (better is 28...Qa3!? 29.Nd2 Qb4–+) 29.Bc2–/+ f5 30.Nd2 Ba5 31.Nb1 Kf7 32.f3 Kf6 33.Kf2 h6 34.g3 g5 35.Ke3 f4 36.Ke2 ½–½. Fournier,Frederic (1960) – Pichy22 (1825), Echecs21, 2003.

5.c4 Be6 6.d4 ed4 7.ed4 Qe7 8.Qe2 Bd7 (8...d5 9.c5=) 9.Nc3 (9.d5 Nh5+=) 9...Qe2 10.Be2 Be7 11.Nf3 0-0 12.0-0 c6 13.Rfe1 b5 (13...Re8 14.d5+=) 14.d5 cd5 15.cb5 Rc8 (15...Re8+-) 16.ba6 Na6? (16...Bd8 17.Rad1 Be6+-) 17.Ba6 Ra6 18.Re7 Be6 19.Nd4 Kf8 20.Rb7 Bd7 21.a4 Raa8 22.a5 Bc6 (22...Rc4 23.Nd1+-) 23.Rb6 White prepares the advance a6 23...Be8 24.a6 Ne4 (24...h6 25.b5 Rc4 26.Nd1+-) 25.Nd5 Nd2 (25...Rc4 26.a7 h6 27.Rb8+-) 26.Rb7 Nc4 (26...Bc6 27.Nc6 Rc6+-) 27.Ne6! fe6 (27...fe6 28.Bg7 Mate attack) 28.Bg7 Kg8 29.Nf6 1-0. marekt – Noai, ChessWorld.net, 2020.

5.c4 Be6 6.Nf3 d5 7.Ne5+= dc4 8.Nc3 (8.Nc4 Be7+=) 8...b5= 9.a4 Bd6 10.f4 (10.Nf3 0-0+=) 10...Bb4 (better 10...Nd5!?=) 11.ab5+/- Nd5 (11...Bc3 12.Bc3 Ne4 A) worse 13.Bc4 Bc4 14.Nc4 Qh4 15.Ke2 Qg4 16.Kf1 Qd1 17.Rd1 ab5-/+; B) 13.Nc4?? Qh4 14.g3 Ng3 15.hg3 Qg3 (15...Qh1?! 16.Kf2-/+) 16.Ke2 Bg4 (16...Bc4 17.d3 Bd5 18.e4 Be4 19.de4 Qc3 20.ba6-/+) 17.Kd3 Bd1 18.Rd1 Qg6 19.e4 ab5-+; C) 13.Qh5+/-) 12.Bc4 f6?? (better 12...Nc3 13.Bc3 Bc3 14.dc3 Qd1 15.Kd1 Ke7+/-) 13.Qh5+- Kf8 (13...Ke7 14.Nd5 Bd5 15.Bd5 Qd5 16.Nc6 Ke6 17.Qd5 Kd5 18.Nb4 Kd6 19.Na6 Na6 20.ba6+-) 14.Bd5 Bd5 15.Nd5 Qd5 (15...fe5 16.Nb4 Qd7 17.Be5 a5+-) 16.Ng6! hg6 17.Qd5 (17.Qd5 Rh5 18.Qa8 Rb5 19.Ra6+-; 17.Qh8?! Kf7 18.0-0 Bd2+-) 1-0. Adlai – Nickie, internet, 2021.

5.c4 Be7 6.d3 0-0 7.Nf3 Bg4 8.Be2 c6 9.Nc3 h6 10.h3 Bf5 11.0-0 Nbd7 12.e4 Bh7 13.Bc1 Qc7 14.Be3 Rfd8 15.Qa4 Nb6 16.Qa5+/- Rdc8?? 17.Bb6+- Qd7 18.Qa4 d5 19.ed5 cd5 20.Qd7 Nd7 21.Nd5 Nb6 22.Ne7 (22...Kf8 23.Nc8 Rc8 24.Ne5+-) 1–0. pierre – bortch, internet, 2008.

5.c4 Be7 6.d4 e4 7.Ne2 Bg4 8.Qd2 Nbd7 9.h3 Bh5 10.g4 Bg6= 11.Bg2 h6 12.Nbc3 c6 13.Ng3 Rc8 14.Nge4 0-0. mgriffin (1815) – ebaker (1875), net–chess.com, 2001.

5.c4 Be7 6.Ne2=+.

5.c4 Be7 6.h3 Nc6 7.Nf3 0-0 8.d4= ed4 9.Nd4 Nd4 10.Bd4 c5 11.bc5 dc5 12.Bb2 Qd1 13.Kd1 Be6 14.Nc3 Rad8 15.Kc2 Rd7 16.Bd3 Rfd8 17.Rad1 h6. rommeltdf (1790) – eforry (1720), net–chess.com, 2002.

5.c4 Bf5 6.Nf3= Be7 (6...a5 7.Be2=) 7.d4 (7.Be2=) 7...ed4 (7...e4 8.Qc2=) 8.Nd4+= Bg6 9.Bd3 0-0 (9...Nbd7 10.Nf5 0-0 11.Qf3+=) 10.0-0 (10.Bg6 hg6 11.0-0 c5+=) 10...Ne4 (10...Bd3 11.Qd3 Re8 12.Rd1+=) 11.f4+- Bf6? (better 11...Nf6+-) 12.f5+- Bd4 (12...Qe7 13.fg6 fg6 14.Qc1+-) 13.ed4 Qh4 (13...Nf6 14.fg6 fg6 15.Nd2+-) 14.fg6 fg6 (14...hg6 15.Qf3 d5 16.cd5+-) 15.Rf8 Kf8 16.Qf3 (16.Qf3 Nf6 17.g3+- (17.Qb7?! Qe1 18.Bf1 Ne4 19.Qc8 Ke7=)) 1–0. Janek – Poussis, internet, 2017.

5.c4 h6 6.h3 Be6 7.Nf3 Bf5 (7...Nc6 8.Qc2=) 8.d4 e4 (8...Nbd7 9.de5 Ne5 10.Be2+=) 9.Nfd2 Be7 (9...c5 10.g4 Bg6 11.Bg2+/-) 10.g4 Bh7 11.Nc3 0-0 (11...Nc6 12.Bg2+/-) 12.h4 c6? (better 12...Bg6+/-) 13.g5+- hg5 (13...Nbd7+-) 14.hg5 Nfd7 (14...Nbd7 15.gf6 Nf6+-) 15.Qh5 f6 16.Qh7 Kf7 17.Qh5 Kg8 18.g6 b6 (18...Ne5 19.Qh7) 19.Qh8 (19.Qh7) 1-0. Pereira - Florin Helmis, internet, 2021.

5.Bc4 b5 6.Bb3 c5 7.c4 h5. seruty (2475) – texa, net–chess.com, 2002.

5.Bc4 d5 6.Ba2 Bd6 7.c4 dc4 8.Bc4 b5 9.Ba2 Bb7 10.Nf3 Nbd7 11.d3 c5 12.e4 cb4 13.ab4 Bb4 14.Nbd2 0-0 15.0-0 a5 16.Ne5 Ne5 17.Be5 Bd6 (better is 17...Qd3 18.Bf6 gf6 (18...Bd2?! 19.Qg4 Bh6 20.Rfe1–/+) 19.Qg4 Kh8–+) 18.Bb2 Bc7 19.Nf3 Nh5 20.g3 Qd7 21.Nh4 Ng3?? (better is 21...Nf6+=) 22.fg3+- Qh3?? (22...Rad8 23.Qh5 Bb6 24.Kh1 Ba7+-) 23.Nf5 (23.Qh5 Qd7 24.Nf5 Bb6 25.Kh1 Be4 26.de4 Qf5 27.Rf5 g6 28.Qh6 Bd4 29.Bd4 gf5 30.Qg5) 23...g6 (23...Rae8 24.Qf3 Bc8 25.Ng7 Re7+-) 24.Ne7 1–0. maxeem – soho, Live Game Caissa's Web, 2004.

5.Bc4 d5 6.Bb3 c6 7.Be5+= Bd6 8.Bb2 Qc7 (better 8...a5!?=) 9.Nf3+/- Bg4 10.Nc3 Nbd7 11.Ne2 Bf3 12.gf3 Be5 13.d4 Bd6 14.f4 g6 15.Rg1 Ne4 (better 15...0-0!?=) 16.c4+/- Ndf6?? (16...dc4!? 17.Bc4 0-0+/-) 17.cd5 (17.f3 dc4 18.Bc4 Qe7 19.fe4 Ne4+-) 17...cd5?? (17...Nd5 18.f3 Nef6+- (18...Ne3?? 19.Qd3 Nd5 20.Bd5 cd5 21.fe4+-)) 18.Rc1 (18.f3!? Rd8+-) 18...Qd7 19.f3 Qh3 20.fe4 Qh2 (20...Qe3 21.Ba4 (21.ed5 Ne4 22.Rf1 Be7+/-) 21...b5 22.e5+-) 21.e5 (better 21.Qc2 Qh4 22.Kd1 de4 23.d5+-) 21...Ne4 22.Qd3 Be7 23.Bd5?? (better 23.Rf1 Qg2 24.Bd5 Bh4 25.Kd1 Qf1 26.Kc2 Rc8 27.Bc3 Rc3 28.Nc3 Qd3 29.Kd3 Nc3 30.Rc3+- (30.Kc3?! b6+-)) 23...Bh4+/- 24.Kd1 Nf2 25.Kc2 (better 25.Kd2!? Nd3 26.Rh1 (26.Kd3?! Qh3 27.Rh1 Qd7=) 26...Qh1 27.Rh1 Nb2 28.Rh4+/-) 25...Nd3=+ 26.Kd3 0-0?? (better 26...Qh3 27.Rh1 Qd7=+) 27.Rh1+- Qf2 28.Rcf1 Rab8 (28...Qf1 29.Rf1 Rab8+-) 29.Rf2 Bf2 30.Rh2 Be3 (30...Be1 31.e6 Rfd8 32.ef7 Kf8 33.Be6+-) 31.Ke3 Rfd8 32.Be4 h5 (32...b6 33.d5+-) 33.d5 Kf8 34.Nc3 Rbc8 (34...b5 35.f5 Re8 36.Ne2 gf5 37.Bf5+-) 35.d6 b5 (35...a5 36.f5 Kg7 37.ba5+-) 36.Nd5 Kg7 (36...Rc4+-) 37.e6 f6 38.Bf6 (38.Bf6 Kh6 39.d7 Ra8 40.Bd8 Kg7 41.Bf6 Kf8 42.Bg6 a5 43.d8Q Rd8 44.Rh5 Rd5 45.Rh8) 1-0. FeegLood (2560) - Baluk (2195), Rated Bullet tournament, lichess.org, 2015.

5.d4 Nc6 6.Be2 Be7 7.d5= Nb8 8.c4 Bf8 9.Nf3 Ne4 10.Qc2 Nf6 11.Nbd2 h6 12.Ne4 Ne4+= 13.Qe4 g6? 14.Qc2?? Bf5 15.e4+- Bg4 16.Ne5 Be2+/- 17.Ng6 fg6 18.Bh8 Bh5 19.0-0 Nd7 20.f3 Qe7? 21.g4+- Qg5 22.Qc1 Be7 23.Qg5 Bg5 24.gh5 0-0-0 25.Bd4 gh5 26.Ra2 Rg8 27.Rg2 c5 28.dc6! bc6 29.f4 c5 30.bc5 dc5 31.Bf2 Nf6 32.fg5 Ng4 33.gh6 Nh6 34.Rg8 Ng8 35.Bc5 Nf6 36.Rf6 (36...Kd8 37.e5 Kc7 38.Rd6 a5 39.e6 Kb8 40.e7 Kc8 41.e8Q Kb7 42.Ra6 Ka6 43.Qc6) 1–0. marus – kentakius2, internet, 2001.

5.d4 ed4 6.Qd4 (6.ed4 Nc6=) 6...Be7 (6...Nc6 7.Qd1=+) 7.Nf3= 0-0 (7...Nc6 8.Qd2=) 8.Bd3 c5 (8...Nc6 9.Qc3=) 9.Qf4 (9.bc5 dc5 10.Qh4 h6=) 9...Qc7 (9...d5!? 10.bc5 Nbd7=) 10.0-0 Nc6 (10...Be6 11.Ng5 Nc6 12.Bf6 Bf6 13.Bh7 Kh8 14.Bd3 Bg5 15.Qg5+-) 11.bc5+- Nd5?? (better 11...Qb8+-) 12.Qe4+- g6 13.Qd5 Be6 (13...dc5 14.Qb3 b5 15.Be4+-) 14.cd6 Bd6 (14...Qd8 15.Qc5 Bd6 16.Qc3+-) 15.Qg5 Qe7 (15...f5+-) 16.Bf6 1–0. Luzuriaga,Norberto Horacio – Neumann, Tiger SC, 2000.

5.d4 Nbd7 6.Nd2= Be7 (6...ed4 7.Bd4 c5 8.Bb2=) 7.de5 White launches an attack 7...de5 8.Ngf3 Bd6 (8...a5 9.ba5 Ra5 10.Bd3=) 9.Nc4+= Increases the pressure on e5 9...Qe7 10.Qd2 (10.Nd6 cd6 11.c4 Nb6=) 10...b5 (10...Ne4 11.Qd3 Nef6 12.e4=) 11.Na5 (11.Nd6 cd6 12.a4 ba4 13.Ra4+=) 11...Nb6 (better 11...0-0!?=) 12.Nc6+- Qe6 (12...Qd7 13.Nce5 Qe7 14.c4+-) 13.Be5 0-0 (13...Qd7 14.Bf6 gf6 15.Ncd4+-) 14.Nfd4 Qd5 15.Bf6 gf6 16.Qe2 Re8 17.Qf3 Qf3 18.gf3 Kf8 19.Rg1 Bd7 (19...h6 20.0-0-0+-) 20.Bd3 Be5?? (20...Bh2 21.Rg2 Bf4 22.Bh7 Bg5+-) 21.Bh7 (21.Bh7 Bc6 22.Nc6+-; 21.Ne5?! fe5 22.Nb3 Bc6+-) 1–0. Woelfelschneider,Peter – Nittschalk,Karl, T8e–11.03 TSC, 2002.

5.d4 e4 6.c4 b6 7.d5+= Be7 8.Nc3 Bf5 9.Qb3 0-0 10.Nge2 c6 11.Ng3 Bg6 12.Rd1 c5 13.Be2 Nbd7 14.0-0 h6 15.Qc2+/- Nh7 16.Nce4+- f5 17.Nc3 Bh4 18.Bh5 Bh5 19.Nh5 Ne5 20.Na4 Rc8 21.Nf4 Re8 22.Ne6 Re6 23.de6 b5 24.Be5 ba4 25.Rd6 Qe7 26.Qa4 Nf8 27.Qa6 Re8 28.Rc6 Ng6 29.Bd6 Qg5 30.Rc8 Rc8 31.Qc8 Kh7 32.b5 f4 33.ef4 Nf4 34.Bf4 Qf4 35.b6 Bf2 36.Rf2 Qc1 37.Rf1 Qc4 38.e7 Qd4 39.Kh1 Qd3 40.Qf8 Qa3 41.Qf5 (41…g6 42.Qf7 Kh8 43.e8Q) 1–0. pierre (1915) – pauloroberto, internet, 2006.

5.d4 Be7 6.de5+= de5 7.Qd8 Bd8 8.Be5 0-0 (8...c5 9.Nf3+=) 9.Nd2 (9.Nf3 Nc6 10.Bb2 Be6+=) 9...Nc6 (9...Nbd7 10.Bg3+=) 10.Bg3 Bf5 (10...Nh5 11.Ngf3+=) 11.Bd3+- Bd3 12.cd3 b5 (12...Re8!?+-) 13.Rc1+- Ne7 14.Ke2 (14.Nb3 c6 15.Ne2 a5+-) 14...Rc8 (14...a5!?+-) 15.Ngf3+- Ng6 (15...Re8 16.Nb3+-) 16.Rc6 Ra8 17.Bc7 (17.Rhc1 Re8+-) 17...Bc7 (17...Ne7 18.Rc5+-) 18.Rc7 Rfc8 (18...Rfd8 19.Rhc1+-) 19.Rhc1 Rc7 (19...Rcb8 20.Nb3+-) 20.Rc7 h6 (20...Nd5 21.Rc5 Nge7 22.g3+-) 21.d4 Nd5 (21...Re8 22.g3+-) 22.Rc5 Nge7 (22...Nf6 23.g3+-) 23.Kd3 (23.g3 f5+-) 23...Rc8 (23...f5 24.Ne5+-) 24.g4 (24.g3 f6+-) 24...g5 (24...Rd8 25.Ne4+-) 25.h4 (25.Rc8 Nc8 26.Ne4 Ncb6+-) 25...gh4 (25...f6 26.Rc8 Nc8 27.Ne4+-) 26.Nh4 (26.Rc8 Nc8 27.Nh4 Nf6+-) 26...Rc5 (26...Rd8 27.Ndf3+-) 27.bc5 b4 (27...Nf6 28.f3+-) 28.ab4 Nb4 29.Kc4 Nbc6 30.Nf5 (30.e4 Kf8+-) 30...Ng6 (30...Na5 31.Kc3 Nf5 32.gf5+-) 31.Nh6 (31.Nh6 Kf8 32.g5+-) 1–0. Rosner,Dirk – Mueller,Bernd, Tiger SC, 2000.

5.Be2 b5 6.a4 Bb7 7.Nf3 (7.ab5 Bg2 8.Bf3 Bh1 9.Bh1 Ra7–/+) 7...Be7 (7...e4 8.Nd4 c5 9.Nb3=) 8.ab5+= ab5 9.Ra8 Ba8 10.Bb5 Nc6 (10...c6 11.Be2+=) 11.c4+/- 0-0 12.Qa4 Qd7 13.Nc3 Bb7 (13...Rb8!?+/-) 14.Nd5+- Ra8 (14...Bd8 15.Be5! de5 16.Ne5+-) 15.Bc6 Ra4 16.Bd7 Ra8?? (16...Nd7 17.Ne7 Kf8+-) 17.Ne7 (17.Ne7 Kf8 18.Bc6+-) 1–0. pierred (2775) – ctessman (2270), net–chess.com, 2016.

5.Be2 Be7=+.

5.Ne2 Nc6 6.d4 Be7 7.d5 Nb8 8.c4 Bf5 9.Ng3+= Bg6 10.Bd3 c6 11.dc6 Nc6 12.Nc3 0-0 13.0-0 Bd3 14.Qd3 Re8 15.Nf5 Bf8 16.e4 g6 17.Ne3 Nd4 18.Ncd5 Nh5 19.f4 Qh4 20.Bd4 ed4 21.Nc2 f5? 22.ef5 gf5 23.Nd4 Bg7 24.Nf5 Qd8 25.Rad1 Kh8 26.Ng7 Ng7 27.f5 Rf8 28.Rde1 Nh5 29.Qd4 Nf6 30.Re6 Kg7 31.Rf3 Rc8 1–0. guest6771 – guest4402, ICC, 2005.

5.Ne2 g6 6.d4 ed4 7.Nd4= Bg7 8.Be2 0-0 9.0-0 b5 10.c4 bc4= 11.Bc4 Bb7 12.Nd2 c5 13.bc5+= dc5 14.N4f3 Ne4 15.Bg7 Kg7 16.Ne4 Be4 17.Qd8+- Rd8 18.Ng5 Ra7?? 19.Ne4+- Rad7 20.Rab1 Ra7 21.Rb3 Rc8 22.Rfb1 Nd7 23.Bf7! Rcc7 24.Bc4 Ne5 25.Bd5 c4 26.Rc3 Rc8 27.f3 Rac7 28.Rb6 Ra7 29.f4 (29...Nd7 30.Rb7+-) 1–0. Rosner,Dirk – Mueller,Bernd, Tiger SC, 2000.

5.Nf3 Nc6 6.h3 Bf5 7.c4 h6 8.d3 b5 (better is 8...Qe7!?=) 9.cb5+/- ab5 10.d4 1–0. Fournier,Frederic (1960) – montalbano (1750), Active, 2002.

5.Nf3 Nbd7 6.Be2 Ng4 7.d4+= Ndf6 8.h3 Nf2 9.Kf2+- Ne4 10.Kg1 h5 11.de5 g5 12.ed6 Bd6 13.Qd4 Rg8 14.Qe4 Be6 15.Nc3 a5 16.Nd4 ab4 17.Ne6 fe6 18.Qe6 Kf8 19.Nd5 (19...Rg6 20.Qg6 Bh2 21.Kh2 Qd5 22.Rhf1 Ke7 23.Qg7 Kd6 24.Rf6 Qe6 25.Rd1 Kc5 26.Qc7 Qc6 27.Rf5#) 1–0. Schellen,Anton – Melquiades,Jay, FICGS, 2006.

5.Nf3 Be7 6.Be2 Nc6 7.c4 0-0 8.0-0 Ne4 9.d3 Ng5 10.Nbd2 f5 11.Ng5 Bg5 12.Nf3 Bf6 13.Qd2 e4 14.Nd4 Nd4 15.Bd4 Bd4 16.ed4 ed3 17.Bd3 f4 18.f3 Qh4 19.Rae1 Bd7 20.Qf2 Qh6 21.Re4?? (better is 21.Re7 Rf7 22.Rf7 Kf7 23.Be4+=) 21...Bf5–/+ 22.Rfe1 Be4 23.Be4 c6 24.d5 Rac8 25.dc6 bc6 26.Qb6 d5 (26...Qh4!? 27.Rd1 Rfe8 28.Qa6 Qe7=) 27.cd5+= cd5 28.Bd5 Kh8 29.Qh6 gh6 30.Bb7 Rc2 31.Ra1 Rg8–/+ 32.g4 fg3 33.hg3 Rg3 34.Kf1 Rgg2 35.f4 Rgf2 36.Ke1 Ra2?? 37.Ra2 Ra2 38.Ba6 Ra3 39.Be2 Kg7 40.Kd2 Kf6 41.Bd3 h5 42.Bh7 h4 43.Be4 h3 44.Kc2 h2 45.Kb2 Re3 46.Bh1 Kf5 47.b5 Kf4 48.b6 Re8 49.b7 Kg3 50.Kc3 Kf2 51.Kc4 Kg1 52.Bc6 ½–½. Fournier,Frederic (1895) – Ternisien,Jean Michel, Partie Libre, 2007.

5.Nf3 Bg4 6.h3 Bh5 7.Be2 Be7 8.c4 Nbd7 9.Qb3 b6 10.0-0 0-0 11.a4 a5 12.Bc3 ab4–/+ 13.Bb4 c5 14.Bc3 e4 15.g4 Ng4 16.hg4 Bg4 17.Qd1 ef3 18.Bf3 Bf3 19.Qf3 Bf6 20.Bf6 Qf6 21.Qf6 Nf6 22.Nc3 Rfd8 23.Rfb1 Ra6 24.Kf1 d5 25.cd5 Nd5 26.Nd5 Rd5 27.Ke2 g5 28.a5 ba5–+ 29.Rb5 f5 30.Raa5= Ra5 31.Ra5 Kg7 32.d4 h5 33.Rc5? Rd7?? 34.Rf5+/- Kg6 35.Rc5 h4 36.Kf3 h3? 37.Kg3 Rh7 38.Rc1 Kf5 39.Re1?? Rh4? 40.f3+- h2 41.Rh1 (41…Rh7 42.Rh2+-) 1–0. Serot,Fabien (1770) – Sahlmann,Walter, Cap d'Agde op, 2006.

5.g3 h6 6.Bg2 Nc6 7.Ne2 Be7 (7...d5 8.Nbc3=) 8.d4 ed4 9.ed4 Bd7 (9...h5 10.Nbc3=) 10.c4 (10.0-0 0-0+=) 10...0-0 (10...h5 11.Nbc3=) 11.Nbc3 Re8 12.0-0 Bg4 (12...Bf5 13.f4+=) 13.Qd3+= Qd7 14.Nf4 Nh5 (14...Bf5!? 15.Qd2 Bf8+=) 15.Nh5+/- Bh5 16.f4 (16.Be4 Bg6 17.Bg6 fg6 18.Qg6 Bg5+-) 16...Bg6 (16...Bg4 17.Rae1+/-) 17.f5 Bh7 18.Be4 Bf6 (18...h5 19.h4+/-) 19.Nd5+- Qd8 (19...Bg5 20.Rae1+/-) 20.Rae1 Kh8 21.Bc3 Na7? (better 21...Kg8+-) 22.Nf6 Qf6 23.Bb7 Re1 24.Re1 (24.Ba8 Bf5 25.Be1 Bd3 26.Rf6 gf6+-; 24.Be1?! Re8+-) 24...Bf5 (24...Rb8 25.Be4 d5 26.Bd5 Bf5+-) 25.Qe3 Rd8 (25...Rg8 26.d5 Qd8 27.Rf1+-) 26.d5 Qg6 27.Qa7 Bh3 28.Qe3 (28.Qa6?? Qc2 29.Bd2 Qd2 30.Re2 Qe2 31.Qd6 Qe1) 28...Kh7 (28...Kg8 29.Bd2 Qc2 30.Rc1+-) 29.Ba6 Qc2 (29...Ra8 30.b5 Kg8 31.Qd2+-) 30.Qe4 Qe4 31.Re4 1-0. pereira – bureau, internet, 2021.

5.c4 Qb6 6.d4 (6.Be2 a5 7.Qa4 Na6 8.Qa5 Qa5 9.ba5 Nc5 10.Nf3 Na4 11.Bc3=; 6.Nf3 Be7 7.Nc3 0-0 8.Be2 a5 9.0-0 ab4 10.Na4 Qd8 11.ab4=; 6.Nc3 Bf5 7.d4 Nbd7 8.Be2 ed4 9.Na4 Qc7 10.Bd4 Be7 11.Nf3=; 6.Qc2 a5 7.b5 cb5 8.cb5 Nbd7 9.d4 e4 10.d5 Be7 11.Nd2=) 6...e4 7.Nc3 Be7 8.Qc2 Bf5 9.Nge2 d5 10.cd5 cd5 11.Nf4+=.

5.d3 a5 6.Nd2 Be7 7.Ngf3 ab4 8.ab4 Ra1 9.Qa1 0-0 10.Be2 Na6 11.c3 Bd7 (11...Qc7 12.0-0=) 12.0-0 (12.Qa5 Qa8=) 12...Qc7 13.Qb1 h6 (13...b5 14.d4=) 14.d4 ed4 15.Nd4 d5 16.Nf5 Bd8 17.Qc2 Bf5 (17...Ne4 18.Nd4 Nd2 19.Qd2=) 18.Qf5+= b5 19.Ra1 Nb8 20.Nb3 (20.Bd3 Re8+=) 20...Re8 21.Qb1 (21.Ra8 Nbd7=) 21...Nbd7 22.Ra6 Qb7 (22...Ne4 23.Nd4 Nb8 24.Ra8=) 23.Ra2 (23.Qa1 Bb6=) 23...Nb6 (23...Ne4 24.Bd3=) 24.Qa1 (24.Nc5 Qb8=) 24...Bc7 25.Nd4 Nc4 26.Bc4 (26.Ra7 Qb8 27.Nc6 Bh2 28.Kf1 Qd6=) 26...dc4 (26...bc4 27.Ra7 Qb8 28.Nc6 Bh2 29.Kf1+=) 27.Ra7 Qb8 28.Qa6 Bh2 29.Kf1 Be5 30.Nc6 Qd6 31.Nd4 Qd5 32.Qc6 Bd4 33.Qd5 Nd5 34.ed4 Rb8 35.g3 g5 36.Ra5 (36.Ke2 Kg7=) 36...h5 (36...Kg7 37.Ra6=) 37.Ra3 (37.Ra6 Kg7=) 37...Kg7 38.Bc1 Kg6 39.Bd2 f6 40.Ra6 h4 41.gh4 gh4 42.Rd6 Ne7 43.Kg2 Kf5 (43...Ra8 44.Rd7 Nf5 45.Rd5+=) 44.Be3 Rb7 45.f3 Rb8 (45...Ra7 46.d5 Ra2 47.Kh3=) 46.Kh3 Rg8 47.Kh4 Rg2 (47...Kg6 48.Kg4 Kf7 49.Kf4 Ng6 50.Kg3 Ne5 51.Kh3 Rh8 52.Kg2 Rg8 53.Kf1 Nf3 54.Rd7 Ke6 55.Rb7 Nh2 56.Kf2=) 48.Kh3 (48.Rb6!?=) 48...Rc2+= 49.Rb6 Rc3 50.Rb5 Ke6 51.Rb6 Kf7 52.Bf2 Rf3 53.Kg2 Rb3 54.Be1 (54.b5 c3 55.Rb7 Ke6–/+) 54...Kg6 (54...c3 55.Rb5 c2 56.Rc5–/+) 55.Rb5+= Nf5 56.d5 Rb2 57.Kg1 Re2 (57...Nd4 58.d6 Nf3 59.Kf1–/+) 58.Kf1 Rc2 (58...Ra2 59.Rc5–/+) 59.Kg1 (59.Bf2 Rb2–/+) 59...Re2 ½–½. Cirulis,Ilmars (1905) – Teverovski,Bogoljub (2015), FICGS, 2016.

5.d4 ed4 6.Qd4 d5 7.Nf3 Nbd7 8.c4 g6 9.cd5+/- cd5 10.Bb5 a6?? 11.Bd7 Qd7 12.Qf6 Rg8 13.Ne5 Qe7 14.Qe7 Be7 15.0-0 Bf6 16.Nd3 Bb2 17.Nb2 Bd7 18.Nc3 Bc6 19.Rad1 Rd8 20.Rfe1 f5 21.Nd3 d4 22.ed4 Kf8 23.Nf4 Kf7 24.d5 Be8 25.Ne6 Rc8 26.Ne2 b5 27.N2f4 Rc3 28.Rd3 Rd3 29.Nd3 h6 30.Nc7 Bd7 31.Na6 f4 32.Nf4 Bf5 33.Nc7 g5 34.Nfe6 Be6 35.de6 (35…Ke7 36.Nd5 Kf8 37.Rc1+-) 1–0. jammboy – novice1234, ChessWorld.net, 2009.

5.d4 ed4 6.Qd4 Be7 7.Bd3 0-0 8.Qh4 Be6?? 9.Bf6+- g6 10.Be7 (10...Qc8 11.Nf3+-) 1–0. marus2 – pitfall, internet live, 2001.

5.d4 Nbd7 6.Nf3 Be7 7.Nfd2 e4 8.Bc4 d5=+ 9.Be2 0-0 10.f3 ef3–/+ 11.Nf3 Re8 12.Ne5 Ne5 13.de5 Nd7 14.Rf1 Nb6 15.Bd3–/+ g6 16.Qf3=+ Be6 17.b5 c5 18.Qg3?? Bf8 19.Bc3 c4 20.Be2 Bg7 21.Ba5 Qd7 22.Bb6 ab6 23.Nc3 Qc7 24.Qf2?? Qe5 25.Rc1 Qc3 26.Kd1 Ra3 27.Bf3 Ra1 28.Qd2 Rc1 29.Qc1 Bh6 30.Re1 Bf5 31.Qd2 Qd2 32.Kd2 d4 33.Ke2 Be3 34.Kd1 Kf8 35.Bb7 Bg4 36.Bf3 Bf3 37.gf3 f5 38.h4 f4 39.Ke2 Re5 40.Kf1 Rb5 41.Kg2 Rb2 42.Re2 d3 (43.Re3 fe3 44.h5 dc2 45.Kh3 c1Q 46.Kg3 e2 47.f4 e1Q 48.Kg4 Rg2 49.Kf3 Qe2#) 0–1. Eries – leighcastle, ChessWorld.net, 2009.

5.d4 e4=+ 6.c4 d5 7.Nc3 Bd6 8.Nge2 0-0 9.c5 Bc7 10.h3 Be6 11.b5 b6 12.a4 bc5=+ 13.dc5 Qe7 14.Nd4 Qc5 15.Qd2 Rc8 16.Ba3 Qb6 17.a5! Qb7? 18.a6 Na6 19.ba6 Qb8 20.Nc6 (20…Be5 21.Ne7 (21.Nb8?! Bc3 22.Qc3 Rc3+-) 21...Kh8 22.Nc8+-) 1–0. Zmolil,Josef – Schulz,Hans_Juergen, TT–12.22 ETC, 2004.

5.Be2 a5 6.b5 Be7 7.d4 0-0 8.de5 de5 9.Qd8 Rd8 10.Be5 cb5 11.Nf3 Nc6=+ 12.Bb2 b4 (13.c3 Bf5=+). Valica,Slavo (1630) – Schulz,Hans_Juergen (1750), b2–b4.com, 2005.

5.Be2 Be7 6.d3 0-0 7.h3 a5 8.c3 ab4 9.cb4 b5 10.Bf3 Bb7 11.Ne2 Nbd7 12.Ng3 Qc7 13.Nf5= Rfe8 14.g4 c5 15.0-0 h6 16.e4 cb4 17.ab4 Ra1 18.Ba1 Kh7 19.Bb2 d5 20.Qb3 Nb6 21.Rc1+= Qb8 22.Re1 de4 23.de4 Kg8 24.Na3 Bc6 25.Bc3 Bd7 26.Kg2 Bf5 27.ef5= Na4? 28.Be5+- Qc8?! 29.Nb5 Nb6 30.Na7 Qa6 31.Nc6 Bd6 32.b5 Qa4 33.Qb1 Be5 34.Re5 Re5 35.Ne5 Qd4 36.Nc6 Qc5 37.Kg1 Ne8 38.Be2 Nd5 39.Qe4 Kf8 40.Nd4?? Nd6?? 41.Qe5+- Nc4 42.Qb8 Ke7 43.Qb7 Kd6 44.Qb8 Kd7?? 45.Bc4 Qc4 46.Qa7 Qc7 47.Qc7 Kc7 48.Kg2 Kb6 49.Kf3 Nc7 50.Ke4 Nb5?? 51.Nb5 Kb5 52.Kd5 g6 53.fg6 fg6 54.f4 Kb6 55.f5 (55…gf5 56.gf5+-) 1–0. inaldo – Istvanny (1605), internet, 2007.

5.Nf3 Qc7 6.c4 Nbd7 7.Be2 Be7 8.Nc3 0-0 9.0-0 a5 10.d3 Re8 11.Re1 Nf8 12.Qc2 g6 (12...Bf5 13.Ne4=) 13.e4 h5 14.h3 Kg7 15.Bf1 Ne6 16.Rec1 Qb8 17.b5 Nh7 18.a4 Nhg5 19.Ng5 Ng5 20.Ne2 Bf6 21.f3 h4 22.Rab1 Ne6 23.Ba3 Bd7 24.bc6 Bc6 25.Rb2 Qa7 26.Kh1 Qe3 27.Ng1 (27.Bd6 Nd4 28.Nd4 Qd4=) 27...Rad8 (better is 27...Ba4 28.Qc3 Nc5–/+) 28.Qd2? (better is 28.Rcb1!?+=) 28...Bg5 (28...Qd2!? 29.Rd2 Bg5 30.Ra2 Bc1 31.Bc1–+) 29.Qe3 Be3 30.Rcb1 Rd7 31.Re2 Bd4 32.Bb2 f5 33.Bd4 Nd4 34.Ra2 Kf6 35.Ne2 Ne2 36.Be2 Rf8 37.Kg1 Rh8 38.Kf2 Rh5 39.Ke3 Rg5 40.Bf1 Rg3 41.Kf2 g5 42.Ke3 g4–/+ 43.hg4 fg4 44.Rf2 Kg5 45.Kd2 Rf7 46.Kc3 gf3 47.gf3 Rff3 48.Rf3 Rf3 49.Be2 Rf2 50.Rg1 Kf4 51.Bd1 h3 52.Rh1?? h2–+ 53.Kb3 Kg3 0–1. Fournier,Frederic (1995) – chemajaque (2050), Echecs21, 2003.

5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.d3 Bg4 9.Nbd2 Re8 10.c4 Qc7 11.a4 Nbd7 12.b5 c5 13.h3 Bf3 14.Bf3+/- Rab8 15.a5 Nh5 16.Bh5+- gh5 17.Qh5 Nf6 18.Qf3 Qd7 19.Ne4 Ne4 20.Qe4 f5 21.Qf3 Qe6 22.Qe2 f4 23.ef4 ef4 24.Qe6 Re6 25.Bg7 Kg7 26.Rae1 Rbe8 27.Re6 Re6 28.Rd1 Kf6 29.Kf1 Kf5 30.a6 b6 31.f3 h5 32.Kf2 h4 33.Rd2 Re3 34.Rd1 Ke5 35.Re1+/- Kd4?? 36.Re3+- fe3 37.Ke2 d5 38.cd5 Kd5 39.Ke3 Ke5 40.f4 Kf5 41.Kf3 Kf6 42.Kg4 Ke6 43.Kh4 Kf5 44.Kg3 Kg6 45.Kg4 Kf6 46.Kh5 Kg7 47.g4 Kh7 48.Kg5 Kg7 49.f5 Kg8 50.h4 Kf7 51.h5 Kg7 52.h6 Kh7 53.f6 c4 54.f7 (54…cd3 55.f8Q d2 56.Qg7#) 1–0. Onkel_Luis – innercourt, ICC, 2003.

5.Nf3 h6 6.c4 Qe7 7.Be2 Nbd7 8.0-0 Nb6 9.d4 e4 10.Nfd2 h5 11.Nc3 Be6 (better is 11...Bg4!?=) 12.c5+/- (12.Nce4?! Ne4 13.Ne4 Nc4=) 12...Nbd5 13.Nce4 Ne4 (13...dc5 14.dc5 0-0-0 15.Nd6 Kb8 16.b5 cb5 17.Be5+/-) 14.Ne4 Nf6? (better is 14...dc5 15.Nc5 Bc8+/-) 15.Nd6+- Kd8 16.e4 Qc7 17.d5! cd5 18.Bf6 gf6 19.ed5 Bd7 (19...Bg4 20.Qd4 Bg7+-) 20.Nf7 (20.Nf7 Kc8 21.d6+-) 1–0. Fournier,Frederic (2090) – ADN1, Active, 2012.

6.Qa4 Na6 7.d4 ab4 8.ab4 d5 9.de5 Bb4 10.Bc3 Bc3 11.Nc3=+.

6.ba5 Qa5 7.Bc3 Qa4 8.Qa4 Ra4 9.d4 Nbd7 10.Bb2 ed4 11.Bd4=+.

6.b5 cb5 7.cb5 Be7 8.d4 e4 9.d5 0-0 10.Nd2 Nbd7 11.Rc1=.

6.b5 Be7 7.d4 e4 8.Nc3 cb5 9.Nb5 0-0 10.Qb1 a4 11.Ne2=.

6.Bc3 ab4 7.ab4 Ra1 8.Ba1 Be7 9.d4 e4 10.d5 0-0 11.Qb3=+.

6.Nc3 ab4 7.ab4 Ra1 8.Qa1 Be7 9.Nf3 0-0 10.d4 e4 11.Nd2=.

6.d4 ab4 7.ab4 Ra1 8.Ba1 e4 9.d5 Nbd7 10.Qa4 Nb6=.

6.d4 e4 7.d5 ab4 8.ab4 Ra1 9.Ba1 Nbd7 10.Qc2 Be7 11.Nd2=.

6.d4 e4 7.d5 Be7 8.b5 0-0 9.dc6 bc6 10.Nd2 Qb6 11.Rb1=.

6.Be2 Be7 7.d4 e4 8.b5 cb5 9.cb5 d5 10.Nd2 0-0 11.a4=+.

6.Be2 Be7 7.d4 e4 8.d5 ab4 9.ab4 Ra1 10.Ba1 0-0 11.Nd2=.

6.Nf3 e4 (6...Be7 A) 7.Be2 e4 (7...ab4 8.ab4 Ra1 9.Ba1 e4 10.Nd4 d5=) 8.Nd4 d5 9.c5 b6 10.Qc2 bc5=+; B) 7.Nc3 ab4 (7...0-0 8.b5 e4 9.Nd4 c5 10.Nde2 Be6+=) 8.ab4 Ra1 9.Qa1 0-0 10.d4 e4=; 6...ab4 7.ab4 Ra1 8.Ba1 Be7 9.Bc3 Bg4 10.h3 Bf5=) 7.Nd4 ab4 8.ab4 Ra1 9.Ba1 d5 10.cd5 (10.Bc3 dc4=+) 10...Nd5 (10...Qd5=+) 11.Nc3 Bb4 12.Ne4 0-0 13.Bc4 Re8 14.Ng3 b5 15.Be2 Bf8 16.0-0 Nb4 17.Qb1 N8a6 18.Bf3 Qb6 19.Be4 h6 20.Bh7 Kh8 21.Ndf5 Bf5 22.Qf5 Qd8? (22...Qc7 23.Ne4=) 23.Qf7 Kh7 24.Nh5 Nd5 25.Ng7 Re7 26.Qf5 Kg8 27.Ne6 Qe8 28.Nf8 Rf7 29.Qg6 Kf8 30.Qh6 Ke7 31.e4 Ndb4 32.Bc3 Nd3 33.e5 Kd8 34.e6 Rf4 (34...Rf5 35.Ra1 Ndc5 36.d4+-) 35.g3 (35.Ra1!? Ra4 36.Ra4 ba4 37.e7 Ke7 38.Qh7 Ke6 39.Qe4 Kf7 40.Qf5 (40.Qd3?! Qe1 41.Qf1 Qf1 42.Kf1 a3+-) 40...Ke7 41.Bf6 Kf8 42.Be5 (42.Qd3?! Nc5 43.Qd6 Kf7+-) 42...Qf7 43.Bd6 (43.Qd3?! Qd5 44.Bd6 Kf7 45.Qh7 Kf6 46.Qe7 Kg6+-) 43...Kg7 44.Qd3+-) 35...Rf5 36.Ra1 Ndc5 37.g4 Rf3 (37...Rd5 38.Qf6 Kc8 39.d4+-) 38.e7 (38.Bb4! Qe6 39.Qe6 Ne6 40.Ra6 Rf4 41.Rc6 Rb4 42.Re6 Rg4 43.Kf1 Rh4+-) 38...Kc7 39.Ba5 Kd7 40.Bd8 Nc7? (40...Rd3 41.Qf6 Rd5+-) 41.Bc7 Kc7 42.Ra7 Kb6 (42...Nb7 43.Qe6 Rf4 44.Qe5 Kb6 45.Rb7 (45.Qf4?! Ka7 46.Qe3 Kb8+-) 45...Kb7 46.Qf4 Qe7 47.g5+-) 43.Qd6 Ne6 44.Ra8 Qa8 45.Qe6 Qe8 (45...Rf8 46.Qe3 Kb7 47.ef8R Qf8 48.f4+-) 46.Qd6 Rd3 47.Qd3 Qe7 48.f4 Qf6 49.f5 b4 50.h3 Qe7 51.Kf2 c5 52.Qd5 Qh4 53.Kg2 Qf6 54.Kf3 Qh8 55.Qe6 Ka5 56.f6 b3 (56...Qh3 57.Ke4 Qg2 58.Kd3+-) 57.Ke2 Qh3 58.f7 Qg2 59.Ke3 Qh1 (59...Qg1 60.Kd3 Qf1 61.Kc3 Qf3 62.d3+-) 60.Qf5 (60.Qf5 Qh6 61.g5+-) 1–0. Felkel,Siegfried – Buczinski,Henryk, corr TT–19, 2006.

6.Qc2 a5 7.d4 Be6 8.de5 de5 9.c5 Nbd7 10.Nf3 ab4 11.ab4=.

6.Nc3 a5 7.d4 ed4 8.Qd4 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Ne4=.

6.Nc3 Be7 7.Be2 0-0 8.Nf3 a5 9.b5 e4 10.Nd4 c5 11.Nc2=.

6.d4 e4 7.Nc3 d5 8.Nge2 Bd6 9.c5 Bc7 10.Nf4 Bg4 11.Qd2=.

6.d4 e4 7.Nc3 Be7 8.f3 d5 9.Qc2 Bf5 10.cd5 cd5 11.g4=.

6.Be2 Be7 7.Nc3 0-0 8.Nf3 a5 9.b5 e4 10.Nd4 c5 11.Nc2=.

6.Be2 Be7 7.d4 e4 8.Nc3 0-0 9.d5 a5 10.b5 cb5 11.cb5=.

6.Ne2 Be7 7.d4 e4 8.d5 0-0 9.Nbc3 a5 10.Ng3 ab4 11.ab4+=.

6.Ne2 Be7 7.d4 e4 8.d5 0-0 9.Nd2 Bg4 10.f3 ef3 11.gf3=.

6.Nf3 Be7 7.Nc3 0-0 8.Be2 a5 9.b5 e4 10.Nd4 Re8 11.0-0+=.

6.Qc2 Be7 7.d4 ed4 8.Bd4 Nbd7 9.Nf3 a5 10.Nbd2 ab4 11.ab4=.

6.Nc3 Be7 7.d4 0-0 8.Nf3 e4 9.Nd2 Bg4 10.Be2 Be2 11.Qe2=.

6.Nc3 Bf5 7.Nf3 Be7 8.Be2 Nbd7 9.0-0 0-0 10.d4 a5 11.b5=.

6.d3 Be7 7.Nf3 a5 8.Be2 0-0 9.0-0 ab4 10.ab4 Ra1 11.Ba1=.

6.d4 Be7 7.Nd2 e4 8.Qc2 Bf5 9.Ne2 Qd7 10.Ng3 Bg6 11.d5+=.

6.d4 Be7 7.Nd2 Bf5 8.Qf3 Bg6 9.e4 Nbd7 10.Ne2 0-0 11.Ng3=.

6.Be2 Be7 7.Nf3 0-0 8.Nc3 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1=.

6.Be2 Be7 7.Nf3 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 0-0 11.Bc3=.

6.Nf3 Be7 7.Be2 0-0 8.Nc3 a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1=.

6.Nf3 Be7 7.Be2 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 0-0 11.Bc3=.

6.Nc3 Be7 7.d4 0-0 8.Nf3 e4 9.Nd2 d5 10.Rc1 Qf5 11.cd5=.

6.Nc3 Be7 7.d4 e4 8.d5 0-0 9.Nge2 a5 10.b5 Re8 11.Ng3+=.

6.d4 e4 7.Be2 a5 8.b5 cb5 9.cb5 d5 10.Nc3 Bd6 11.Nh3=.

6.d4 e4 7.Be2 Qf5 8.Nh3 d5 9.c5 Be7 10.0-0 g5 11.Kh1=.

6.Be2 a5 7.d4 e4 8.d5 Qf5 9.Nc3 Be7 10.Nh3 ab4 11.ab4=.

6.Be2 a5 7.d4 e4 8.d5 Qf5 9.Nc3 Qg5 10.Bf1 Be7 11.b5=.

6.Ne2 a5 7.d4 ab4 8.ab4 Ra1 9.Ba1 Na6 10.Qb3 e4 11.Nec3=.

6.Ne2 Be7 7.d4 e4 8.Nbc3 d5 9.Nf4 0-0 10.cd5 cd5 11.Rc1=.

6.f3 Be7 7.d4 ed4 8.Bd4 0-0 9.Bd3 c5 10.Bb2 Qe6 11.e4=+.

6.Nf3 a5 7.b5 Be7 8.Nc3 0-0 9.d4 e4 10.Nd2 d5 11.c5=.

6.Qc2 a5 7.d4 ed4 8.Bd4 ab4 9.ab4 Ra1 10.Ba1 d5 11.c5=.

6.Nc3 Be7 7.d4 0-0 8.Be2 a5 9.b5 cb5 10.cb5 e4 11.d5=.

6.Nc3 Be7 7.Be2 0-0 8.Nf3 a5 9.b5 e4 10.Nd4 c5 11.Nc2=.

6.d3 Be7 7.Nf3 0-0 8.Be2 a5 9.0-0 ab4 10.ab4 Na6 11.Bc3=.

6.d4 e4 7.Nd2 Be7 8.d5 0-0 9.Qc2 Bf5 10.dc6 Nc6 11.Ne2+=.

6.d4 e4 7.d5 Be7 8.Nc3 a5 9.b5 0-0 10.Nge2 Bg4 11.Qc2+=.

6.Be2 Be7 7.Nc3 Bf5 8.Nf3 0-0 9.0-0 Nbd7 10.d4 a5 11.b5=.

6.Be2 Be7 7.d4 e4 8.Nc3 0-0 9.d5 Bf5 10.g4 Bg6 11.h4+=.

6.Ne2 Be7 7.d4 e4 8.Nbc3 0-0 9.d5 Bg4 10.Qb1 cd5 11.cd5+=.

6.Nf3 a5 7.b5 Be7 8.Nc3 0-0 9.e4 Bg4 10.Be2 Nbd7 11.d4=.

6.Nc3 a5 7.b5 Be7 8.d4 0-0 9.Nf3 e4 10.Nd2 d5 11.Qb3=.

6.Nc3 Be7 7.Nge2 0-0 (7...Nb6 8.d3 Be6 9.f4 0-0 10.Qd2 Nh5 11.g3=+) 8.Ng3 (8.d3 Nb6 9.Qd2 Re8 10.f4 a5 11.ba5=+) 8...Re8 (8...a5 9.Nf5 Nb6 10.Qf3 Re8 11.b5=) 9.Be2 Bf8 (9...a5 10.0-0=+ ab4 11.ab4=) 10.d3 (10.0-0 Nb6 11.d4=) 10...g6 (10...Be7 11.0-0=; 10...a5 11.0-0=) 11.0-0+= Bg7 12.Qc2 Qe7 13.Rad1 h5 14.Nge4 Ng4 15.b5 f5 16.h3 Nh6 17.Nd2 Nf6 18.f4 (18.d4 Nf7+=) 18...ef4 19.ef4=. Sviridov,Valentin – Jankovec,Ivan, Hornicky Kahanec, 1980.

6.Nc3 Be7 7.Nf3 0-0 8.Be2 a5 9.0-0 ab4 10.ab4 Ra1 11.Ba1=.

6.Nc3 Be7 7.Nf3 0-0 8.Be2 e4 9.Nd4 Ne5 10.Qc2 c5 11.Nb3=.

6.Nc3 Be7 7.Nf3 0-0 8.Be2 e4 9.Nd4 Ne5 10.d3 c5 11.Nc2=+.

6.Nc3 Be7 7.Nf3 0-0 8.Be2 Re8 9.d4 (9.0-0 a5 10.b5 cb5 11.Nb5=) 9...Bf8 (9...a5 10.0-0= (10.b5 cb5 11.Nb5=) 10...e4 11.Nd2=; 9...e4 10.Nd2 d5 11.0-0=) 10.de5 (10.0-0 a5+= (10...Qc7 11.e4+=) 11.b5+=) 10...Ne5 (10...de5 11.0-0=) 11.0-0 Be6 12.Qd4 Bg4 13.Rfd1 Bf3 (13...Nf3 14.gf3 Be6 15.Qh4=) 14.gf3+= Qd7 15.Qh4 Ng6 16.Qg3 Nd5?? (16...Qe6 17.Rd4=) 17.Qg4 (better 17.cd5 Be7 18.Rac1+-) 17...Qg4 (17...f5 18.Qd4 Nc3 19.Bc3=) 18.fg4+= Nf6 19.Kg2 Rad8 20.Rd4 h6 21.Rad1 Be7 22.f4 Nf8 23.h4 White plans g5 23...Ne6 24.R4d2 White gets the initiative 24...Nc7 25.g5 hg5 26.hg5 Nh7 27.Kf3 (27.b5 Na8+-) 27...Nf8+- 28.Bd3 Nfe6 (28...f6!? 29.g6 d5 30.Rh2+-) 29.Rh2 (29.Rh2 Bg5 30.fg5 Ng5 31.Kf2+-) 1–0. Bulcourf,Carlos – Tombolini, Buenos Aires, 1981.

6.Nc3 Be7 7.Nf3 a5 8.Be2 ab4 9.ab4 Ra1 10.Qa1 0-0 11.0-0=.

6.d3 a5 7.Nf3 Be7 8.Be2 Qb6 9.Qd2 ab4 10.Qb4 Qc7 11.0-0=.

6.d3 Be7 7.Be2 a5 8.Nf3 Qb6 9.Nc3 ab4 10.Na4 Qc7 11.ab4=.

6.d4 e4 7.Nc3 a5 8.b5 cb5 9.Nb5 Be7 10.Qc2 Nb6 11.Nc3=.

6.d4 Be7 7.Nd2 0-0 8.de5 Ne5 9.Ngf3 a5 10.b5 Qc7 11.Be2=.

6.Be2 d5 7.cd5 Nd5 8.Nc3 Nc3 9.dc3 Qg5 10.Bf1 Qg6 11.c4=.

6.Be2 Be7 7.d4 e4 8.Nd2 0-0 9.Nh3 d5 10.cd5 cd5 11.0-0=.

6.Nf3 a5 7.Nc3 ab4 8.ab4 Ra1 9.Ba1 Be7 10.d4 e4 11.Nd2=.

6.Nf3 e4 7.Nd4 Ne5 8.d3 Bg4 9.f3 Bh5 10.Nd2 Nd3 11.Bd3=.

6.Nc3 a5 7.Nf3 Be7 8.b5 0-0 9.Be2 cb5 10.Nb5 a4 11.0-0=.

6.d3 Be7 7.Nf3 a5 8.Be2 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Bc3=.

6.d4 Nbd7 7.Nd2 e4 8.Ne2 d5 9.cd5 cd5 10.Nb3 Qb6 11.Nf4=.

6.d4 Nbd7 7.Nd2 e4 8.Ne2 d5 9.Nf4 Bg4 10.Qb3 g5 11.Ne2=.

6.Be2 a5 7.d4 ab4 8.ab4 Ra1 9.Ba1 d5 10.de5 Bb4 11.Kf1–/+.

6.Be2 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 Qb6 10.Bc3 Ne4 11.Qa4=.

6.Nf3 a5 7.b5 Be7 8.Be2 cb5 9.cb5 0-0 10.0-0 Nbd7 11.Nc3=.

6.Nf3 Be7 7.Be2 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 Qb6 11.c5=.

6.Qc2 a5 7.d4 ed4 8.Bd4 ab4 9.ab4 Ra1 10.Ba1 Na6 11.b5=.

6.Nc3 a5 7.b5 0-0 8.d4 Nbd7 9.Nf3 ed4 10.Nd4 c5 11.Nf5=.

6.Nc3 a5 7.b5 0-0 8.d4 Bf5 9.Be2 cb5 10.Nb5 Nc6 11.Nf3=.

6.Nc3 Bf5 7.Nf3 h6 (7...Nbd7 8.Be2=) 8.Be2 Nbd7 9.0-0 Qc7 10.d3 Bg4 11.h3 Bf3 (11...Bf5 12.e4 Bg6 13.Bc1=) 12.Bf3+= g5 (12...0-0 13.d4+=) 13.Rb1 h5 14.Ne4 g4 15.hg4 hg4 16.Bg4 Ng4 17.Qg4 0-0-0 18.g3 (18.Qf5 f6+/-) 18...Rdg8 (18...Kb8 19.Qf5 f6 20.b5+=) 19.Qf5 Kb8 (19...Rg7!?+=) 20.Qf7+/- Bg5? (better 20...Qd8+/-) 21.Qe6+- Bh4 (21...Ka8 22.Nd6 Bf6 23.Nf7+-) 22.Kg2 (22.Qd6 Qd6 23.Nd6 Rh5+-) 22...Ka8 (22...d5 23.cd5 Re8 24.Qd6 (24.gh4?! Re6 25.de6 Rg8 26.Kh3 Nb6+-) 24...cd5 25.Qc7 (25.gh4?! de4 26.Qc7 Kc7+-) 25...Kc7 26.Rbc1 (26.gh4?! de4 27.Rbc1 Kd8+-) 26...Kb8 27.Nc3+- (27.gh4?! de4 28.de4 Rh4+-)) 23.Rh1 Nf8 (23...Qd8 24.Nd6 Rh7 A) 25.Be5?! Re7 26.Nb7 A1) 26...Re6?? 27.Nd8 Rd8 28.Bc7+- (28.Rh4?! Ne5 29.Re4 Rd3+-; 28.gh4?! Ne5 29.Rb3 Nd3+-); A2) 26...Kb7+/-; B) 25.Nf5+-) 24.Qe8 Bd8 (24...Qd8 25.Qd8 Bd8 26.Rh8 Rh8 27.Nd6+-) 25.Rh8 Rh8 26.Nd6! Qd6 27.Be5 Qe7 (27...Ne6 28.Bh8 Nc7 29.Qg8+-) 28.Qe7 Be7 29.Bh8 Ne6 (29...Kb8 30.f4+-) 30.f4 a6 (30...Kb8 31.Rf1+-) 31.Rh1 Kb8 32.Rh7 Bd6 33.Rh6 Nf4 34.ef4 Bc7 35.Be5 Be5 36.fe5 (36.fe5 Kc7 37.Rh7 Kd8 38.Rb7+-) 1-0. Vendelo – Lynnersi, internet, 2021.

6.d4 0-0 7.de5+= de5 8.Qd8 Rd8 9.Be5 Bf5 (9...Be6 10.Nf3 Nbd7 11.Bc3 a5 12.ba5 Ne4+=) 10.Nd2 (10.Nf3 Nbd7 11.Bc3 a5 12.ba5 Ne4+=) 10...a5 (10...Nbd7 11.Bc3 c5 12.Ngf3 Nb6+-) 11.b5 (11.ba5 Nbd7 12.Bc7 Rdc8+=) 11...Nbd7 12.Bd4 (12.Ngf3 Ne5+=) 12...Nc5 (12...Rac8+=) 13.Be2 cb5 14.cb5 Nd3 15.Kf1 Ng4 16.Bg4 Bg4 17.h3 Bf5 18.Ngf3 a4 19.Ke2 Nc5 20.Rhc1 Bd3 21.Ke1 Nb3 22.Nb3 ab3 23.Bb2 Bf6 24.Nd4 Bb5 25.Rc5 (25.Nb5? Bb2 26.Rd1 Ba1 27.Ra1 Ra5–+) 25...Bc6 26.f3 g6 27.Rb1 (27.Nc6 Bb2 28.Nd8 Ba1 29.Nb7 b2–+) 27...Bd5 28.Rb5 Be7 29.Kf2 (29.Nb3?? Bc4 (29...Ba3?! 30.Ba3 Ra3 31.e4=) 30.Nd4 Bh4 31.Kd2 Bb5–+) 29...Ba3 30.Ba3 Ra3 31.Nb3 Ra2 32.Kg3 Bb3 33.R5b3 Rdd2 34.Rg1 Rab2 35.Rb2 Rb2 36.Rd1 Kg7 37.h4 h5 (37...b5 38.e4=+) 38.e4= Kf6 39.Kf4 Rg2 40.Rb1 Rc2 41.Rb7 Rc1 42.Ra7 Rh1 43.Ra6 Ke7 ½–½. Woelfelschneider,Peter – Schulz,Hans_Juergen, TT–12 ETC, 2004.

6.d4 e4 7.Nc3 d5 8.cd5 cd5 9.Nge2 0-0 10.Nf4 Nc6 11.Rc1=.

6.d4 e4 7.d5 0-0 8.Nc3 a5 9.b5 cb5 10.cb5 Nbd7 11.Nge2=.

6.d4 e4 7.Ne2 Bg4 (7...a5 8.d5=) 8.h3 Bh5 (8...Bd7 9.Nbc3=) 9.Qc2 h6 (9...Bg6!?=) 10.Nf4+- d5 (10...Bg6 11.Ng6 fg6 12.Nd2+-) 11.Nd2 (11.cd5 cd5 12.Nc3 Bg6+-) 11...Bd6 (11...0-0 12.cd5 cd5 13.g4+=) 12.Nh5 Nh5 13.Be2 (13.Qa4 dc4 14.Bc4 Nf6+=) 13...Nf6 14.0-0 Bc7 (14...0-0 15.Rac1+=) 15.c5 (15.cd5 Qd6 16.g3 Qd5+-) 15...Nbd7 (15...0-0 16.Qa4+=) 16.f3 (16.b5 cb5 17.Bb5 0-0+=) 16...Qe7 (16...ef3 17.Rf3 (worse 17.gf3 Qe7 18.Qb3 Nh5–/+) 17...Qe7 18.Bd3+=) 17.fe4 de4 18.Bc4 (18.b5 0-0+=) 18...0-0 19.Qc3 (19.a4 Nd5 20.Qb3 Qg5=) 19...Rae8 (19...Nd5 20.Qb3 Qg5 21.Ne4 Qe3 (21...Ne3?? 22.Ng5 Nc4 23.Rf7 Rf7 24.Nf7+-) 22.Nf2 N7f6=) 20.d5 (better 20.Qb3!?+=) 20...cd5–/+ 21.Bd5? (better 21.Bb5–/+) 21...Be5–+ 22.Bf7 Rf7 23.Qb3 (23.Qc2 Bb2 24.Qb2 Ne5–+) 23...Bb2 24.Qb2 Nd5 (24...Ne5 25.Qc2–+) 25.Qb3 (25.Rf7 Qf7 26.Nc4 Re7–+) 25...N7f6 (better 25...Rf1!? 26.Rf1 Qg5–+) 26.Nc4–/+ Rd8 27.Nd6 (better 27.Rad1 Qe6 28.Nd6–/+) 27...Rff8?? (better 27...Rd6 28.cd6 Qd6–+) 28.Rad1 (28.Rf6 Qf6 29.Qd5 Kh8+=) 28...Rd6= 29.cd6 Qd6 (better 29...Qf7 30.Rf5 Nb6 31.Qf7 Kf7=) 30.Rf5?? (better 30.Rf6 Rf6 31.Rd5=) 30...Rd8–+ 31.Rd4 (31.Rf2 b5–+) 31...Kh7 32.Kh1 (32.Qa2 b5–+) 32...Qe6 33.Rf1 (33.g4 Qd6 34.Rf4 Qe5 35.Rf6 Qf6–+) 33...Rd7 (33...Rc8 34.Rfd1–+) 34.Rdd1 (34.Rfd1 Qe5–+) 34...Qe5 35.a4 (35.Rde1 Rc7–+) 35...Qg5 (35...Qg3 36.Rde1 Ng4 37.hg4–+) 36.Rde1 Qh5 (36...Rc7 37.a5–+) 37.Qc4 (37.Qb2–+) 37...Qg5 38.Qe2?? (38.Qb3 Rc7 39.a5–+) 38...Nc3 (38...Nb4!? 39.Kh2–+) 39.Qc2 (39.Qf2–+) 39...Ncd5 (39...Nfd5 40.Rf2–+) 40.Qb3?? (40.Qe2 Nb4 41.Rd1–+) 40...Qh4 (40...Rc7 41.Kg1–+) 41.Qb2 (41.b5 Rc7–+) 41...Ng4 42.Qd4 (42.Kg1 Nge3 43.Rf2 Ng2 44.Kg2 Nf4 45.Rf4 Qe1–+) 42...Nf2 (42...Ndf6 43.Qc5 Nf2 44.Rf2 Qf2 45.Rg1–+) 43.Kh2? (43.Rf2 Qf2 44.Qe4 g6 45.Rd1–+) 43...Ng4 (43...Nf6 44.Qb2 N2g4 45.Kg1–+) 44.Kh1 Ngf6 (better 44...Ndf6 45.Qc5 Nf2 46.Rf2 Qf2–+) 45.Qa7?? (45.Qb2 Qg3 46.Qd2–+) 45...Nb4 46.Qa5 (46.Qc5 Nfd5–+) 46...Nd3 47.Re2 Nd5 48.Qb5 Nf6 (48...Qe7 49.Qc4–+) 49.Rd2?? (49.Qa5 Rd5 50.Qc7 Qg5–+) 49...Re7?? (better 49...Rc7–+) 50.Qf5= Kg8 51.Qc8 Kh7 52.Qf5 Kg8?? (52...Kh8 53.Rc2 Re8 54.Rc8=) 53.Qc8 Ne8?? (better 53...Kh7 54.Qf5=) 54.Qc4+- Kh7 55.Qd5?? (better 55.Rd3 Rc7 56.Qb4+-) 55...Nf6?? (better 55...Qg3!?–+) 56.Qf5–/+ Kg8 (56...Kh8 57.Rc2 Re8=) 57.Rc2?? (57.Qc8 Kh7 58.Qf5=) 57...Re8 (57...Qg5 58.Rc8 Kf7 59.Qg5 hg5 60.a5–+) 58.Qb5? (better 58.Rc8 Kf8 59.Re8 Ke8 60.Qe6 Kf8 61.Rb1=) 58...Rb8–+ 59.Qb3 (59.a5 Qg3 60.Qc4 Kh8–+) 59...Kh7 60.Qf7 (60.Qe6 Qg5 61.Rc7–/+) 60...Nh5?? (better 60...Qg5–+) 61.Qf5=+ Kg8 62.Rc8 Rc8 63.Qc8 Kh7 64.Qf5 Kh8 (64...g6 65.Qd7 Ng7 66.Rf7 Qe1 67.Kh2=) 65.Qc8 (65.Qf8 Kh7 66.Qf5 g6 67.Qd7 Ng7=) 65...Kh7 66.Qf5 g6 67.Qd7 Ng7 68.Rf7 Nf2?? (better 68...Qe1 69.Kh2 Qa1 70.Qb7 Qe5 71.Kg1 Nc5=) 69.Kh2 (better 69.Kg1!? Nh3 70.Kf1 Ng5 71.Rg7 Kh8+-) 69...Ng4 70.Qg4 Qg4 71.hg4 g5 (71...b6+-) 72.Rb7 Kg6 73.Rg7! Kg7 74.a5 Kg6 75.a6 h5 76.gh5 Kh5 77.a7 g4 78.a8Q (78.a8Q Kg5 79.Qe4 Kf6 80.Qc6 Kf7 81.e4 Kf8 82.e5 Ke7 83.Qf6 Kd7 84.e6 Kc6 85.e7 Kd7 86.Qf8 g3 87.Kg3 Ke6 88.e8Q Kd5 89.Qb5 Kd4 90.Qd6 Ke4 91.Qbe5) 1–0. Brehm,Thorsten – Narr,Irmgard, 2. Nurnberger Open, 2002.

6.Be2 0-0 7.d4 e4 8.Nc3 d5 9.cd5 cd5 10.Rc1 Be6 11.f3=+.

6.Be2 0-0 7.d4 e4 8.d5 a5 9.b5 cb5 10.cb5 a4 11.Nc3=.

6.Ne2 0-0 7.d4 c5 8.Nbc3 ed4 9.ed4 cb4 10.ab4 d5 11.c5=+.

6.Ne2 Be6 7.d4 Nbd7 8.Ng3 0-0 9.Be2 Nb6 10.Nd2 ed4 11.ed4=.

6.f3 Be6 7.d4 Nbd7 8.e4 ed4 9.Bd4 0-0 10.Kf2 a5 11.b5=+.

6.Nf3 Be6 7.Be2 Rg8. Fournier,Frederic (1995) – 9110, Active (5/0), 2005.

6.Nf3 Bg4 7.Be2= 0-0 8.d4 e4=+ 9.Nfd2 Be2 10.Qe2 d5 11.Nc3 Nbd7 12.0-0 Re8 13.Rac1 Nf8 14.b5 a6 15.a4 ab5 16.ab5 Ne6 17.Ra1 Qd7 18.Na4 Qd8 19.Bc3 cb5 20.cb5 b6 21.Rfc1 Nd7 22.Nf1 Qb8 23.Qa2 Qb7 24.Qb3 Ra7 25.Ra2 Rea8 26.Rca1 Nc7 27.Ng3 g6 28.Ne2 Nf6 29.Bb4 Bb4 30.Qb4 Ra5 31.Nac3 Ra2 32.Ra2 Nfe8 33.h3 Rd8 34.Qe7+= Qb8 35.Nf4+/- Qc8 36.Ra7+- Qd7 37.Nfd5! Qe7 38.Ne7 Kf8 39.Nc6 Rc8 40.Ne5 Nf6 41.Rb7 Ke8? 42.Rb6 Ncd5 43.Nd5 Nd5 44.Rd6 Ne7 45.Rf6 Rb8 46.b6 Nd5 47.Rf7 Rb6 48.Rh7 Ra6 (48...g5 49.Rg7+-) 1–0. Chirpii,Alexandru (2145) – Bocancea,Dmitrii, Kishnev ULIM Cup, 2001.

6.Nc3 a5 7.b5 Be7 8.Nf3 cb5 9.Nb5 0-0 10.Be2 Qd7 11.d3=.

6.Nc3 a5 7.b5 Be7 8.Nf3 Nbd7 9.Be2 0-0 10.0-0 d5 11.cd5=.

6.d4 Nbd7 7.Ne2 Be6 8.Ng3 ed4 9.Bd4 c5 10.bc5 dc5 11.Bc3=.

6.d4 e4 7.Ne2 d5 8.Nbc3 a5 9.b5 dc4 10.Ng3 Be6 11.Qa4=.

6.Be2 a5 7.d4 ab4 8.ab4 Ra1 9.Ba1 Na6 10.Qb3 d5 11.c5=.

6.Be2 Be7 7.Nf3 0-0 8.0-0 Qc7 9.Nc3 a5 10.b5 Nbd7 11.d4=.

6.Ne2 Bd3 7.Ng3 Bf1 8.Rf1 a5 9.b5 Nbd7 10.Nc3 Rc8 11.e4=.

6.Ne2 Nbd7 7.d4 Be7 8.Ng3 Be6 9.Be2 ed4 10.Bd4 c5 11.Bc3=.

6.Nf3 a5 7.ba5 Qa5 8.Be2 Be7 9.0-0 0-0 10.d3 Nbd7 11.Nbd2=+.

6.Nf3 Be7 7.Be2 0-0 8.0-0 Re8 9.Nc3 Nbd7 10.d4 a5 11.b5=.

6.Qc2 a5 7.d4 Be6 8.de5 de5 9.c5 Nbd7 10.Nf3 ab4 11.ab4=.

6.Nc3 a5 7.b5 Be7 8.d4 0-0 9.Nf3 e4 10.Nd2 d5 11.bc6=.

6.Nc3 Be7 7.d4 0-0 8.Be2 a5 9.b5 ed4 10.Qd4 Be6 11.Nf3+=.

6.d4 e4 7.Nc3 d5 8.Rc1 dc4 9.Qc2 Bf5 10.Bc4 b5 11.Bb3=.

6.d4 e4 7.Nc3 Be7 8.f3 d5 9.cd5 cd5 10.fe4 de4 11.Nge2=.

6.Be2 Nbd7 7.Nf3 e4 8.Nd4 c5 9.Nc2 Ne5 10.d4 ed3 11.Bd3=.

6.Be2 Be7 7.d4 e4 8.Nc3 0-0 9.d5 a5 10.dc6 Nc6 11.b5=.

6.Ne2 Be7 7.d4 e4 8.d5 0-0 9.Nd2 Bg4 10.Qc2 cd5 11.cd5+=.

6.Ne2 Bg4 7.d4 Nbd7 8.Nd2 Be7 9.f3 Bh5 10.Ng3 Bg6 11.Be2=.

6.Nf3 a5 7.Nc3 ab4 8.ab4 Ra1 9.Qa1 Be7 10.d4 e4 11.Nd2=.

5.Bb5 a6 6.Ba4 Bg4 7.f3 Bf5 8.e4 Bd7 9.Ne2 Nb4?? 10.Bd7 Qd7 11.ab4 d5 12.Be5 Bb4 13.Bf6 gf6 14.c3 Bc5 15.d4 Bb6 16.Qc2 c6 17.0-0 Rg8 18.e5 Qh3? 19.Rf2 fe5 20.Qb3 Bc7 21.Qb7 Rc8 22.Qc6 Ke7 23.Ra6 ed4 24.Qf6 Kf8 25.f4 Rb8?? 26.Ra1 d3? 27.Nd4 Re8 28.Nd2 Bd8 29.Qd6 Be7 30.Qd5 Qc8 31.Nb5 Bc5 32.Nd4 Qc7?? 33.g3 Bd4 34.Qd4 Rd8 35.Qb4 Kg7 36.Rd1 Rd7 37.Ne4 Re8 38.Rfd2 Qa7 39.Kg2 Qe3?? 40.Nc5 Rd5 41.Nd3 Re6 42.Qb2 Qe4 43.Kf2 Rh6 44.c4 Rd4 45.h4 Rf6 46.Nc5 Rd2 47.Qd2 Qc4 48.Nd7 Re6 49.Qd4 Qd4 50.Rd4 h6 51.Kf3 f6 52.g4 Ra6 53.Rd5 Ra3 54.Ke4 Rh3 55.h5 Rg3 56.Kf5 Rg2 57.Nb6 Ra2 58.Rd6 Ra5 59.Rd5 Ra6?? 60.Nc4 Kf7 61.Nd6 Ke7 62.Ne4 Re6 63.g5 fg5 64.fg5 hg5 65.Ng5 Rh6 66.Kg4 Kf6 67.Rd6 Kg7 68.Rh6 Kh6 69.Ne6 Kh7 70.Kg5 Kh8 71.Kg6+- Kg8 72.Ng5 Kh8 73.Nf7 Kg8+- 74.h6 (74…Kf8 75.h7 Ke8 76.h8Q Kd7 77.Qd4 Kc6 78.Ne5 Kc7 79.Qc5 Kb8 80.Qb6 Ka8 81.Qb4 Ka7 82.Nd7 Ka6 83.Qb6#) 1–0. babai – lillogoal, internet, 2007.

5.Nc3 d5 6.b5 Na5 7.Qf3 =+.

5.Nc3 e4 6.Bc4 (6.d3 ed3 7.Bd3 Be7=) 6...Bg4 7.Nge2 Ne5 8.Bd5 (Better is 8.Bb3!?=) 8...Nd5–/+ 9.Nd5 Nc4 10.Bc1 (10.Bd4 c5 11.Bc3=+) 10...Qc8 (10...c6!? 11.d3 cd5 12.dc4 dc4–/+) 11.0-0 c6 12.Ndc3 Be7 13.Ne4+= Qf5 14.N4g3 Qg6 15.d3 Bf6 16.Ra2 Nb6 17.f3 Be6 18.c4 0-0 19.Nf4 Qg5 20.Ne6 fe6 21.e4 Qg6 22.f4 Rad8 23.Qh5 Qe8 24.Qe8 Rde8 25.Bb2 Be7 26.Nh5 g6? 27.Ng7+- Rc8 28.Ne6 Rf7 29.Ng5 Bg5 30.fg5 Na4 31.Bf6 Nb6 32.a4 Rcf8 33.a5 Nd7 34.Raf2 Nf6 35.Rf6 b6 36.ab6 ab6 37.Rf7 Rf7 38.Rf6 Rd7 39.Kf2 Kg7 40.Ke3 h6 41.h4 hg5 42.hg5 c5 43.b5 Rd8 44.d4 cd4 45.Kd4 Rd7 46.Kd5 Rd8 47.Kc6 Re8 48.Kd5 Re5?? 49.Kd6 Rg5 50.Re6 Rg2 51.Kd5 g5 52.Rb6 g4 53.Ke5 Rf2 54.Ra6 g3 55.Ra1 Kg6 56.Rg1 g2 57.b6 Rc2 58.b7 Rb2 59.Rg2! Rg2 60.b8Q Rg5 61.Kd4 (61...Kh7 62.c5+-; Better is 61.Kf4 Rh5 62.Qe8 Kh6+-) 1–0. Anden – touchandgo, Live Game Caissa's Web, 2004.

5.Nc3 Bg4 6.Be2= Qd7 7.h3 (7.Bg4 Ng4 8.Nf3 g6+=) 7...Be6 (7...Be2!? 8.Qe2 Be7=) 8.Nf3+= Be7 9.Ng5 (9.d4 e4 10.d5 ef3 11.Bf3 0-0+=) 9...Bf5= 10.b5 Na5 (10...Nd8 11.e4 Bg6 12.d4=) 11.e4+= Bg6 12.d3 h6 13.Nf3 c6 14.a4 0-0 15.0-0 b6 16.Nh2 (16.Qd2 a6+=) 16...h5 (16...d5 17.Nf3 Qd6 18.d4=) 17.f4 (17.Nf3!?+=) 17...ef4= 18.Rf4 d5 (18...Qe6!? 19.Nf3 d5=) 19.e5+- Nh7 20.Rf1 (better 20.Bh5!? Bg5 21.Rf1+-) 20...d4= 21.bc6 (better 21.Ne4=) 21...Qc6?? (better 21...Nc6!? 22.Ne4 Ne5 23.Bh5 Be4 24.de4 Bc5–/+) 22.Bf3 (better 22.Nb5 Ng5 23.Nf3+- (23.Bd4?! a6=+)) 22...Qc5? (better 22...dc3 23.Bc6 cb2 24.Ba8 ba1B 25.Qa1 Ra8+=) 23.Nd5+- Nc6? (23...Rae8 24.Ba3 Qa3 25.Ra3 Ba3 26.Bh5 Nc6 27.Bg6 fg6+-) 24.Ba3 Qa3 25.Ra3 Ba3 26.Nf4 Rac8 27.Nh5 (better 27.Ng6 fg6 28.Qb1+-) 27...Ne5+- 28.Bd5 (28.Be4+-) 28...Rc5 (28...Rfe8!?+-) 29.Nf4+- Nf6 30.Bb3 Bf5 (30...Bh7 31.Nf3 Nf3 32.Qf3+- (32.gf3?! Re5=; 32.Rf3?! Re5+-)) 31.Nf3+- Bb2 (31...Ra5 32.Nd4 Bc5 33.c3+-) 32.Qe2 (32.Ng5 Ned7+-) 32...Re8 33.Ne5 (33.Qf2 Nf3 34.Qf3 Bc8+-) 33...Rce5 (33...Ree5 34.Qf3 Bc8 35.g4+-) 34.Qf3 (better 34.Qf2 R8e7 35.g4+-) 34...Be6? (better 34...Bc3+-) 35.Ne6 fe6 36.Qc6 Re7 (36...Rc5 37.Qb7 Ra5+-) 37.Qd6 1–0. Sahovski,Alexandr (1885) – Podbornova,Klavdiya, Dimitrovgrad Championship Open, 2010.

5.c4 a6 6.Nc3 d5 7.cd5 Nd5 8.Nd5 Qd5 9.Nf3 Bg4 10.Be2 Bf3 11.Bf3= e4 12.Be2 Be7 13.Rc1 b5? 14.0-0 0-0 15.d3 ed3 16.Bd3 Ne5?? 17.Bh7! Kh7 18.Qd5 Bd6 19.Be5 Be5 20.Qe5 f6 21.Qc7 Kg8 (22.Qb7 Rab8 23.Qd5 Kh8+-) 1–0. rommeltdf (1780) – leventk (1605), net–chess.com, 2002.

5.c4 a6 6.Nc3 Be6 7.d3 g6 8.Nf3 Bg7 9.Rc1 Rc8 10.Nd2 0-0 11.Be2 Nd7 12.0-0 Ne7 13.Nce4 f5 (13...h6 14.Nc3=) 14.Ng5+= Bf7 15.f4 ef4 16.Bg7 Kg7 17.ef4 Nf6 18.Bf3 c6 19.Re1 Qc7 20.Qe2 Rfe8 21.Qf2 d5 22.g3 Bg8 (22...dc4 23.dc4 Bg8+=) 23.cd5 (better 23.Re6 h6 24.Qd4+-) 23...Ned5= (23...Bd5? 24.Bd5 Ned5 25.Ne6 Re6 26.Re6+-) 24.Nc4 h6 25.Nh3 Nd7 26.Qd4 Kh7 27.g4 fg4 28.Bg4 Rcd8 29.f5 Bf7 30.Rf1 (30.fg6!? Bg6 31.Re8 Re8 32.Rf1=+) 30...Ne5-/+ 31.fg6 (31.Ne5 Re5 32.Qa7 Ne3-+) 31...Bg6 (worse 31...Kg6 32.Bf5 Kg7 33.Rc2+=; 31...Ng6?! 32.Qf2 Rf8 33.Qg2=+) 32.Bf5 (32.Ne5 Qe5 33.Qe5 Re5-/+) 32...Bf5-+ 33.Rf5 Rg8 (better 33...Nc4 34.dc4 Ne3-+) 34.Kh1=+ Qg7 (34...Ng4 35.Ne5 Ne5 36.Re5=) 35.Rg1 (35.Ng5! hg5 36.Ne5+/- (36.Qe5?! Qe5 37.Ne5 Nf4=; 36.Re5?! Qg6=)) 35...Ng6= 36.Qe4 Rde8 37.Qf3 Rgf8 38.Nd6 Rf5 (38...Re3 39.Qh5 Nf6 40.Ng5 Kg8 41.Rf6 Rf6 42.Nge4 Rd6 43.Nd6+-) 39.Qf5 Rf8?? (39...Re3+=) 40.Qh5?? (better 40.Rg6 Qg6 41.Qf8 Qd3 42.Qf7 Kh8 43.Ng1+-) 40...Qf6 (40...Nf6 41.Qc5 Qd7 42.Ng5 hg5 43.Qg5 Ng4+/-) 41.Ng5+/- (41.Nb7?! Qf3 42.Qf3 Rf3=) 41...Kg7 42.Nde4?? (better 42.Ngf7 Ndf4 43.Qh6 Kg8 44.Ng5+-) 42...Qe5= 43.Qg6 Kg6 44.Nf3 Qg5 (better 44...Kf5!? 45.Ne5 Ke5=) 45.Nfg5+/- hg5 46.Ng5 Kh5 47.Ne6 Rf3 48.Rg3 Rg3 49.hg3 Kg4 50.Nc5 (50.Kh2 b6+/-) 50...Kg3 51.Nb7 Kf3 52.Nc5 Nc7 53.Kg1 Ke3 54.Kf1 Kd4 55.Ke2 Kd5 (55...Kc3 56.Ke3+=) 56.Nb3 (better 56.Ne4!?+/-) 56...Nb5= 57.Nc5 Na3 (57...Nc7!?=) 58.Na6+= Kd4 59.Kd2 (59.Nb8 Kd5+=) 59...Nb5 (59...Nc4 60.Kc2=) 60.Nc5 (60.Nb8 c5+=) 60...Na7 (60...Nc7 61.Nb3 Kd5 62.Kc2+=) 61.Nb3 Kd5 62.Ke3 Nb5 63.Nc5 Nc7 64.Ne4 Ne6 65.Nc3 Ke5 66.b5 (66.Ne2!?+=) 66...cb5= 67.Nb5 Kd5 68.Nc3 ½-½. Williams,Barry - Wilson,John, NZL Wanganui Chess Club A-Reserve Champ, 2000.

5.c4 b6 6.d4 Be7 7.c5 Bb7 8.cd6 Bd6? 9.de5?? Be5 10.Qd8 Rd8=+ 11.Be5 Ne5–/+ 12.Bb5 Nc6 13.Nc3 0-0 14.Nge2 Ne5=+ 15.0-0 a6 16.Ba4 Nc4 17.Nd4 b5 18.Bb3= Nd2 19.Bf7?? Rf7–+ 20.Rfd1 Nde4 21.Ne4 Ne4 22.Rac1 Rf2 23.Ne6? Rd1 24.Rd1 Rc2 25.Nd4 Rg2! (26.Kg2 Nc3 27.Kf2 Nd1 28.Ke2 Nb2–+) 0–1. mgriffin (1880) – johnb (1855), net–chess.com, 2001.

5.c4 b6 6.Nf3 Bb7 7.Be2 Ne7 (7...e4 8.Ng5=) 8.Nc3 Ng6 9.0-0 Be7 10.d3 0-0 11.e4 Nf4 12.Bc1 Ne2 13.Ne2 h6 14.Nd2 Nh7 15.f4 ef4 16.Nf4 Bf6 17.Ra2 Bd4 18.Kh1 Ng5 19.Nb3 Bf6 (19...Be5 20.Raf2 Qd7 21.Ne2+=) 20.Nh5 Be7 21.Raf2 Qd7 (21...Bc8!?+/-) 22.Bb2 f6 23.Nd4 Rf7 24.Nf5 Kh7 (24...Bc8 25.Nhg7 Rg7 26.Nh6 Kf8 27.Bf6 Bf6 28.Rf6 Ke7 29.Qa1+-) 25.Nfg7 Rg7 26.Bf6 (better 26.Ng7 Kg7 27.Bf6 Bf6 28.Rf6+-) 26...Rf7+= 27.Be7 Rf2 (27...Qe7 28.Nf6 Kh8 29.Qh5+/-) 28.Rf2 (28.Bg5!? Qa4 29.Qa1 (29.Qa4?? Rf1) 29...Rf1 30.Qf1+=) 28...Qe7+= 29.Qg4 (better 29.h4!? Ne6 30.Nf6 Kg7 31.Qa1+=) 29...Rf8-/+ 30.Rf8 Qf8 31.h4 Bc8 32.Qg3 Qf1 33.Kh2 Qf7 34.Nf4 Ne6 35.Ne2 Qg6 36.Qf3 Kg7 37.Ng3 Nd4 38.Nh5 Kh8?? (better 38...Kg8 39.Qg3 Qg3 40.Kg3 c6-+) 39.Qf8+- Qg8 40.Qf6 Kh7 41.Qd4 (better 41.Qe7 Kh8 42.Nf6+- (42.Qc7?! Qf8+/-)) 41...Kg6 (41...Qf7 42.Qf6 Qh5 43.Qe7 Kg8 44.Qd8 Kf7 45.Qc7 (45.Qc8?! Qh4 46.Qh3 Qf4 47.Qg3 Qc1+-) 45...Kf6 46.Qc8 (46.Qd6?! Be6+-) 46...Qh4 47.Qh3+-) 42.Nf4 Kh7 43.Qf6 Qg7 (43...Qe8 44.Nd5 Qe5 45.g3 Qf6 46.Nf6 Kg6 47.Nd5+-) 44.Nd5 Qf6 45.Nf6 Kg6 46.Ne8 Bg4 47.Nc7 Be2 48.Nd5 Bd3 (48...Kf7 49.Nf4 Bd1+-) 49.Nf4 (49.Nf4 Kf6 50.Nd3+-) 1-0. Williams,Barry - Heiloo,Peter, NZL Wanganui v New Plymouth Interclub, 2001.

5.c4 d5 6.b5= Na5 7.Be5 Nc4=+ 8.Bc4 dc4 9.Nc3 Bd6 10.Bd4 0-0 11.Qe2 Be6 12.Nf3 h6 13.0-0 a6 14.a4 c6 15.bc6= bc6 16.a5 Bc7 17.Be5 Ba5 18.Bf6+= gf6 19.Nd4 Bc3 20.dc3+/- Qd6 21.Ra5 Kh8 22.Qh5 Bd5?? 23.Qh6 Kg8 24.Nf5 (24…Qh2 25.Kh2 Bg2 26.Qg7#) 1–0. Bulcourf,Carlos (2210) – Bobba,Andres, Villa Ballester op, 1992.

5.c4 Bf5 6.Nc3 Qd7 7.Nge2 0-0-0 8.Ng3 Bg6 9.h4 h5 10.Qb3 d5 (10...Kb8 11.Be2=) 11.cd5 Nd5 12.Bc4 (12.Nd5 Qd5 13.Qd5 Rd5+=) 12...Nc3 (better 12...Nb6!? 13.Be2 Qd2 14.Kf1 Qc2 15.Qc2 Bc2-/+) 13.Bc3= Bd6 14.b5 Ne7 (14...Nb8 15.d3=) 15.a4 (15.Bf7 Bf7 16.Qf7 Qb5+=) 15...Nf5= 16.Ne4 (16.Nf5 Qf5 17.a5 Rd7=) 16...Rhe8 17.a5 Kb8 18.b6 cb6 19.ab6 a6 20.Qb2 (better 20.d3!?+=) 20...Ne3=+ 21.Nd6 (21.de3 Be4 Discovered attack; 21.fe3 Be4 Discovered attack) 21...Ng2 22.Kf1 Qd6 23.Kg2 Qc6 24.f3 Qc4 25.Be5 Ka8 26.Rhc1?? (better 26.d4 Bc2 27.Rac1-/+) 26...Qe2-+ 27.Kg3 Qe5 (27...Re5 28.Qc3 Rg5 29.hg5 h4 30.Kf4 Qh2 31.Ke3 Re8 32.Kd4 Qf4 33.Kd5 Rd8 34.Kc5 Rc8 35.Kd5 Qg5 36.Qe5 Qd2 37.Qd4 Rd8 38.Kc4 Rd4 39.Kb3 Rb4 40.Ka3 Qb2) 28.Qe5 Re5 29.Rc7 (29.Ra4 Red5-+) 29...Rb5 (29...Re6 30.Rd1-+) 30.Re7 (30.d4 Rb6 31.Rd1 Rbd6-+) 30...Rb6 31.d4 (31.Ra2 Ka7-+) 31…Rbd6 0-1. allyouneedisluft (2520) - whatupyodog (2225), Eastern Bullet Arena, lichess.org, 2017. (=1.a3 e5 2.b4 Nc6 3.Bb2 d6 4.e3 Nf6)

5.c4 Bf5 6.Nf3 a6 7.d4 e4 8.Nfd2 d5 9.Nc3 Ne7 10.Rc1 c6 11.b5 ab5 12.cb5 g6 13.Na4 Bh6 14.Nc5 Qb8 15.Qb3 0-0 16.f3 Re8 17.g4 Bg4 18.fg4= Ng4 19.bc6 bc6 20.Nd7 Qb3 21.Nb3 Be3 22.Rc3 Bf2 23.Ke2 Bh4 24.Rh3 Nf5=+ 25.Rc3 Nf2 26.Rg1 Nd3 27.Bh3 Ne3 28.Bc1 Nc1 29.Nc1 Nc4–/+ 30.Na2?? Ra3 31.Ra3–/+ Na3 ½–½. Van Splunter,Niels – Veltman,Jelmer, NED–ch U14 op, 2000.

5.c4 Bg4 6.Be2 Be2 7.Qe2 Be7 8.Nf3 Qd7 9.d3 0-0-0 10.Nbd2 d5? (10...Qg4 11.0-0+=) 11.cd5 (11.b5 Na5 12.Ne5 Qe6+/-) 11...Nd5 (11...Qd5!? 12.Rc1 Qd3 13.Qd3 Rd3 14.Rc6 e4+=) 12.Ne5 Ne5 13.Be5 Bf6 14.Bf6 Nf6 15.d4 Rhe8 16.Qc4 (16.Rc1 Qe6 17.Nf3 Kb8+-) 16...Qd5 (better is 16...Qd4! 17.Qd4 Rd4=) 17.Qd5+/- Nd5 18.Nf3 Nf4 19.0-0 Ne2 20.Kh1 Nc3 21.Rfc1 Ne4 22.Ra2 h6 23.Rac2 Re7 24.Ne5 f6 25.Nc4 Red7 26.Nd2 (26.b5 Re7+/-) 26...Nd2 (better is 26...Nf2!? 27.Kg1 Nd3=) 27.Rd2+/- b6 28.Rdc2 Kb7 29.a4 a5 30.ba5 ba5? (better is 30...c5!? 31.ab6 cd4+-) 31.Rb2 Ka6 32.Rcb1 1–0. Fournier,Frederic (1650) – magoderiga, Active, 2006.

5.c4 Bg4 6.Be2 Be2 7.Ne2 Ke7? (Better is 7...d5 8.Qc2 dc4 9.Qc4 a6=) 8.d4 ed4 9.Nd4 (9.b5 Ne5 10.Bd4 Ke8+-) 9...Ke8 (Better is 9...Nd4!? 10.Bd4 Kd7+/-) 10.Nc6+- bc6 11.Qf3 Be7 12.Qc6 Nd7 13.0-0 f6 (13...Kf8 14.Bd4+-) 14.e4 (14.Nc3 Kf7+-) 14...Rb8 15.f4 Rb6 16.Qd5 Qb8 17.Qe6 Qb7 18.e5 de5 19.Qh3 Kf7?? 20.f5 h6 21.Qh5 Kg8?? 22.Nc3 Nf8 23.Rf3 e4 24.Rg3+- Bd6 25.c5 Bg3+/- 26.hg3 Rc6?? 27.Nd5+- Nd7 28.Ne7 Kf8 29.Nd5 Qb5 30.Qg6?? Qe2 31.Rf1? Ne5 32.Qh5 Qh5–+ 33.Nf6 Qg5 34.Be5 a6 35.Bf4 Qh5 36.Ng4?? Qg4–+ 37.Rd1 Qe2 38.Rd8 Kf7 39.Rd7 Kf6 40.Be5 Kg5 41.Re7 Qe1 42.Kh2 Kg4 43.Rg7 Kh5 44.f6 Qh1 45.Kh1 e3 46.Kh2 e2 47.Kh3 (47...e1Q 48.g4) 1–0. slavisa11 – SirCharles, Live Game Caissa's Web, 2004.

5.Bc4 a6 6.Ne2 b5 7.Bb3 g6 8.0-0 Bh6 9.f4 0-0 10.Nbc3 Bg4 11.Qe1 Be2 12.Ne2 Nb8? 13.fe5+- de5 14.Be5 Ne4 15.Nd4 Nd7? 16.Bd5 Rc8? 17.Bc7 Rc7 18.Be4 Qe8 19.Bd3 Bg7 20.Rc1 Bf6 21.Qg3 Be5 22.Qg5 Qd8 23.Qd8 Rd8 24.Nf3 Rdc8 25.Ng5 Nf6 26.Ne4 Ne4+/- 27.Be4 Rd8 28.Rfd1 Rd6 29.Bd3 Rc8 30.Rf1 Rdd8 31.Rfd1 Rc6?? 32.Be4+- Rd7?? 33.Bc6 Rc7 34.Bf3 Rc6 35.Bc6 f5 36.c4 bc4 37.Rc4 Kg7 38.Bb7 h5 39.Ba6 Bd6 40.b5 Ba3 41.b6 Bd6 42.Rc7! Bc7 43.bc7 Kh6 44.c8Q Kg7 45.Rc1 Kh6 46.Rc6 Kg5 47.Bd3 Kh6 48.Bf5 Kg5 49.Rg6 Kh4 50.g3 1–0. Vahl,Laurens – Dekker,Els, Hengelo U14 op, 1998.

5.Bc4 Be7 6.Nf3 e4 7.Nd4 Nd4 8.Bd4 d5 9.Be2 Qd6 10.0-0 Bf5 11.c4 0-0 12.Nc3 Qe6 13.cd5+= Nd5 14.Bc4 c6 15.Rc1 Rfd8 16.Qh5 Qg6 17.Qg6+= Bg6 18.Nd5 cd5 19.Bb3 b6 20.Rc7 Bd6 21.Rc6 Bf5 22.Rfc1 Rac8 23.Rc8 Bc8 24.Bd5 Ba6 25.Be4+- Re8 26.f3 h5 27.Kf2 g5 28.Bf6 Be7 29.Bc6 Bf6 30.Be8 (30...Kf8 31.Bc6+-) 1–0. Wall,Bill – Edion, internet, 2005.

5.Be2 Be7 6.Nf3 Bf5 7.d3 Qd7 8.0-0 0-0 9.c4 a6 10.Nbd2 Rad8 11.Nb3 Rfe8 12.Rc1 Bf8 13.d4 e4 14.Nfd2 Na7 15.Na5 c6 16.d5 Be7 17.dc6 Nc6 18.Nc6 Qc6 19.Nb3 Nd7?? 20.Nd4+- Qc8 21.Nf5 Nb6 22.Ng7 Rf8 23.Nf5 Qf5 24.Qd4 Qe5 25.Qe5 de5 26.Be5 Nd7 27.Bf4 Bf6 28.Rc2 Ne5 29.Be5 Be5 30.Rd1 f6 31.Rcd2 Rd2 32.Rd2 Rf7 33.c5 Kg7 34.Bc4 Rc7 35.Be6 Kh6 36.Rd7 Rd7 37.Bd7 Bb2 38.a4 Ba3 39.c6 bc6 40.Bc6 Bb4 41.Be4 Bc5 42.g4 Kg5 43.h3 h5 44.Bf3 h4 45.Be4 a5 46.Kf1 Bb6 47.Ke2 Bc5 48.f4 Kh6 49.Bd5 Bd6 50.Kf3 Bb8 51.Ke4 Ba7 52.g5 fg5+/- 53.f5 Kg7 54.Kd3 Kf6 55.Ke4 (better is 55.Be6!?+/-) ½–½. Vahl,Laurens – Van den Boom,Inge, NED U14 op Hengelo, 1999.

5.Be2 Bf5 6.Nf3 e4 7.Nd4 Nd4 8.Bd4 Be7 9.0-0 b6 10.d3 d5 11.de4 de4= 12.Nd2 c5 13.bc5 bc5 14.Bb2 0-0 15.c4 Rb8 16.Qc2 Qc7 17.h3 Rfd8 18.Rfd1 Bd6 19.Nf1 Be5 20.Rab1 Rd1 21.Bd1 Bb2 22.Rb2 Rb2 23.Qb2 h6 24.Bc2 Be6 25.Nd2 Bf5 26.Qc3 g5?? 27.Qf6+- Qd7 28.Be4 Qd2 29.Qf5 Qc1 30.Kh2 Qc4 31.Qh7 Kf8 32.Qh6 Ke7 33.Qg5 Kf8 34.Qd8 Kg7 35.Bd5 Qd3 36.Qd7 Qg6 37.e4 Qf6 38.Qg4 Kf8 39.Qc8 Kg7 40.Qc5 Qf2 41.Qf2 (41…f5 42.Qg3 Kf6 43.Qd6 Kg5 44.h4 Kh4 45.Qf4 Kh5 46.Bf7#) 1–0. Groebe,Karl Heinz – Bilgen,Emre, Stuttgart–chB, 2004.

5.Be2 Bf5 6.Nf3 a6 7.Nh4 Be6 8.c4 Be7 9.b5 ab5 10.cb5 Na5 11.0-0 Nb3 12.Ra2 Nd2 13.Qd2 Ba2 14.Be5 Bb1 15.Bb2 Ne4 16.Qb4 Bh4 17.Rb1 Bf2 18.Kh1 Qh4 19.Bf3 Ng3# 0–1. TD_6 – Oort, ICS rated light match, 1998.

5.Ne2 Be7 6.Ng3 0-0 7.c4 a6 8.Nc3 d5 9.c5 d4 10.Nce4 Ne4 11.Ne4 Bf5 12.Bd3 Be4 (better is 12...Be6!?+=) 13.Be4+= Bh4 14.0-0 a5 15.b5 f5 16.Bd3 (better is 16.Bf3 e4 17.bc6 ef3 18.Qf3 de3 19.de3 bc6 20.Qc6+-) 16...Qd5?? (better is 16...Ne7+/-) 17.bc6+- Qc6 18.ed4 Rad8 (18...e4 19.Qb3 Kh8 20.Bb5+-) 19.Qh5 (better is 19.Qb3 Kh8 20.Bb5+-) 19...e4 (19...Be7+-) 20.Bc4 Kh8 21.Qh4 f4 22.Rae1 Rde8 23.Qg4 f3 24.d5 Qh6 25.gf3 Rf4 26.Qg3 (better is 26.Qd7 Rg8 27.fe4+-) 26...Rf3 (26...e3 27.Re3 Re3 28.de3 Rc4 29.Qc7 Qg5 30.Kh1 h5 31.Qb7 Kg8+-) 27.Qf3 Qg6 (27...ef3?? 28.Re8) 28.Qg3 Qh6 29.Re3 Kg8 30.d6 Kh8 31.Rfe1 cd6 32.Re4 Re4 33.Re4 Qg6 34.Re8! Qe8 35.Qg7 (35.Bg7) 1–0. Felkl,Karel – Folbr,Martin, Jirasek Memorial op–B, 2009.

5.Nf3 a6 6.Be2 Be7 7.c4 0-0 8.d3 Re8 9.Nbd2 d5 10.cd5 Qd5 11.0-0 Bg4 12.Nc4 Bd6 13.e4 Qe6 14.Nd6 cd6 (14...Qd6 15.Nh4 Bd7 16.Qc2+=) 15.Rc1 Nd4 (better is 15...Bf3 16.Bf3 Rac8=) 16.Nd4+- Be2? (better is 16...ed4 17.f3 Bh5+-) 17.Ne2 (17.Ne6?! Bd1 18.Ng7 Kg7 19.Rfd1 a5+/-; 17.Qe2?! ed4 18.Bd4 d5+-) 17...h6 18.f3 Nh5 19.Kh1 Rf8 20.d4 f5 (20...Rfc8 21.Qd3+-) 21.d5 (21.ef5!? Qa2 22.Qc2 Rae8+-) 21...Qg6 22.Qd3 Rad8 (22...fe4 23.fe4 b5 24.Rf5+-) 23.Qe3 (23.ef5 Qg5+-) 23...f4 (23...Nf6 24.Nc3+-) 24.Qd2 (better is 24.Qb6!? Kh7+-) 24...Nf6 25.Nc3 h5 26.Na4 h4 27.h3 Nh5 28.Kg1 Ng3 29.Rf2 Nh5 30.Nb6 Rde8 31.Rc7 Qg3 32.Rb7 Rf6 33.Kf1 Qh2 34.Ke2 Ng3 35.Kd3 Rd8 36.Nc4 Qg1 37.Rb6 Qb1 38.Qc2 Qa2 39.Na5 Nh5 40.Nb7 Rb8 41.Rd6 Rff8 42.Nc5 Rfc8 43.Ra6 Rb7 44.Re6 Rbc7 45.Re5 Nf6 46.Rf5 Nd7 47.Rf4 Nc5 48.bc5 Rc5 49.Qd2 Qb3 50.Ke2?? Rc2= (50...Rc2 51.Ke1 Rd2 52.Rd2 Qe3 53.Kd1 Qf4–/+) 0–1. Fournier,Frederic (1825) – danipere, Active (2/1), 2005.

5.Nf3 e4 6.Nd4 Nd4 7.Bd4 Bg4 8.Be2 Be2 9.Qe2 Qd7 10.c4 Qg4 11.Qg4 Ng4 12.Nc3 c5 13.bc5 (13.Nd5 cd4 14.Nc7 Kd7 15.Na8 de3 16.fe3–/+) 13...dc5+= 14.Bc5 Bc5 15.Ne4 b6 16.d4 Be7 17.Ke2 Rc8 18.Nd2 1–0. Fournier,Frederic – NN, jeu.europe–echecs.com, 2013.

5.Nf3 e4 6.Nd4 Bd7 7.c4 Ne5 8.d3 (8.Nc3!?=) 8...c5=+ 9.Nc2 (better 9.Nb3 Nfg4 10.Be5 de5 11.h3=+) 9...Ba4 (better 9...Bg4 10.Qd2 Bf5 (worse 10...Nd3 11.Bd3 ed3 12.Qd3=) 11.Be5 de5–/+) 10.Nc3= Bb3 11.de4 Nfg4? (better 11...Be7=) 12.Nd5+- Bc4 (12...Qd7 13.Be2+-) 13.Bc4 Nc4 14.Bc3 h5 (14...Qd7 15.bc5 dc5 16.Qe2+-) 15.Qe2 Nge5 (15...b5 16.a4+-) 16.f4 Rc8 17.0-0 Ne3 (17...cb4 18.ab4 Nd7 19.Ra7 Ncb6+-) 18.Nce3 Nc6 (18...Ng4 19.Nf5 a6 20.b5+-) 19.Rad1 (better 19.Nf5 f6+-) 19...Rh7 (19...Nd4 20.Bd4 cd4 21.Rd4+-) 20.bc5 g6 (20...dc5 21.Qb5 a6 22.Qb7 Nd4 23.Bd4 cd4 24.Rd4 Rh6+-) 21.Nf6 Ke7 22.Ned5 Ke6 23.f5 (23.f5 gf5 24.ef5) 1–0. UncleBulgaria (2420) – Star Rider (1900), ChessWorld.net, 2016.

5.Nf3 Be7 6.b5 Kf8?? (better 6...Nb8=) 7.bc6+- bc6 8.d4 (8.Nc3 Rb8 9.Rb1 Kg8+-) 8...e4 9.Nfd2 d5 10.c4 Bg4 11.Be2 Be2 12.Qe2 Qd6 (12...Rb8 13.Bc3+-) 13.Nc3 g6 14.0-0 Kg7 15.a4 (15.f3 ef3 16.Qf3 Rab8+-) 15...h5 (15...Qe6 16.Ba3+-) 16.Ba3 Qd7 17.Be7 Qe7 18.cd5 (18.f3 Rhb8+-) 18...cd5 19.f3 Qd6 (19...Qe6 20.fe4 de4 21.Rac1+-) 20.fe4 Ng4 (20...de4 21.Nde4 Ne4 22.Ne4+-) 21.Nf3 (21.e5 Qd7+-) 21...Qc6 (21...de4 22.Ne4 Qe7+-) 22.Nd5 Rhe8 (22...Rae8 23.Qb5 Qc2 24.Rac1+-) 23.Rac1 Qb7 (23...Qa4 24.Nc7 Rab8 25.Ne8 Re8 26.Rc7+-) 24.Rc7 Qb3 (24...Qb8 25.Ng5 Rf8 26.h3+-) 25.h3 (better 25.Nd2 Qd5 26.ed5 Nh6+-) 25...Re4 (25...Nh6 26.Ne5 Re5 27.de5+-) 26.Rf7! Kf7 (26...Kh6 27.hg4 Rg4+-) 27.Ng5 (better 27.Nd2 Kg7 28.Nb3 Ne3 29.Nc5+-) 27...Kg7 28.Ne4 Qd5 29.Qf3 (better 29.Qc2 Nh6 30.Qc7 Kh8 31.Nf6+-) 29...Nh6 (29...Re8 30.Nd6 Qd6 31.Qf7 Kh6 32.hg4 Re6 33.gh5 gh5+-) 30.Qf6 Kh7 31.Ng5 Kg8 32.Qg6 Kh8 33.Qh7 1-0. allyouneedisluft (2615) - Audeamus8 (2440), Rated Bullet game, lichess.org, 2019. (=1.a3 Nf6 2.b4 d6 3.Bb2 e5 4.e3 Nc6)

5.Nf3 Be7 6.d4 0-0 7.de5+/- de5 8.Qd8 Rd8 9.Ne5 Ne4 (better 9...Ne5!? 10.Be5 Bf5+/-) 10.Nc6+- bc6 11.g3 (11.Bd3!? Nf6+-) 11...c5+/- 12.Bg2 Bb7 13.bc5 (13.b5!?+/-) 13...Nc5 14.Bb7 Nb7 15.0-0 (15.Nd2 Nc5+/-) 15...Nc5 16.Nc3 Rab8 17.Rab1 Bf6 (better 17...Rd2=) 18.Nd1 (better 18.Ba1+=) 18...Rd1?? (better 18...Rd6 19.Kg2 Na4 20.Bf6 Rb1-+) 19.Rfd1+- Bb2 20.Rb2! Re8 (20...Rb2 21.Rd8 Mate attack) 21.Rb5 Ne4 (21...Ne6 22.Rb7+-) 22.Rbd5 (better 22.Rb7!? a6+-) 22...Nc3 23.Rd8 Kf8 24.Re8 (24.R1d7 a5+-) 24...Ke8 25.Rd3 Ke7 (25...Ne4+-) 26.Rc3 (26.Rc3 Kd6 27.Rc4+-) 1-0. black_bishop_88 (2565) - Kotlette (2190), Ukrainian Bullet League, lichess.org, 2020. (=1.a3 e5 2.b4 Nc6 3.Bb2 d6 4.e3 Nf6)

5.Nf3 Be7 6.Be2 0-0 7.b5 e4 8.bc6+= ef3 9.Bf3 bc6 10.Bc6 Rb8 11.Bd4 Bb7 12.Qf3 Bc6 13.Qc6+/- a5 14.Nc3 Qd7 15.Nd5 Qd8 16.Bf6+- Bf6 17.d4 Rc8 18.Rb1 Re8 19.0-0 Be7 20.Rb5 Bf8 21.Ra5 Qh4 22.Ra7 Qe4 23.a4 Re6 24.a5 Rb8 25.a6 Rg6 26.Nf6! (26…Rf6 27.Qe4+-) 1–0. dearwish (2565) – geldridge (2345), net–chess.com, 2004.

5.Nf3 Be7 6.Be2 0-0 7.c4 Bf5 8.0-0 Nd7 (8...e4 9.Nd4 Nd4 10.Bd4=) 9.d4 Bf6 10.d5 Ne7 11.Nc3 Rc8 12.e4 Bg6 13.Re1 Bh5 14.Nd2 Be2 15.Qe2 c6 16.Qg4 g6 (16...Qc7 17.dc6 bc6 18.Red1+=) 17.Nf3 (better is 17.c5!? Kg7 18.cd6+-) 17...Bg7 (17...Nb6 18.dc6 Nc6 19.Nd2=) 18.Rac1 (18.dc6 Rc6 19.Rad1 Nb6+=) 18...Nf6 (18...Nb6 19.Nd2+=) 19.Qh3 c5 20.Nd2 Qd7? (better is 20...Nh5+=) 21.Qd7+- Nd7 22.Nb5 Bh6 23.Re2 ½–½. Tudose,Matei_Ovidiu – Cioculeasa,Andrei_Vlad, Campionatul National de sah Clasic, 2016.

5.Nf3 Be7 6.h3 Be6 7.Be2 Qd7 8.c4 0-0 9.d3 a6 10.0-0 Na7 11.Nbd2 Rfc8 12.d4+/- ed4 13.ed4 d5 14.Ne5+= Qe8 15.c5 Nc6+= 16.Ndf3 Ne5 17.Ne5 Nd7 18.c6 bc6 19.Nc6 Nf6 20.Rc1 Bd7 21.Ne5 Ba4= 22.Qe1 Ne4 23.f3 Nd6= 24.Bd3 Qd8? 25.Nc6 Bc6 26.Rc6 Nc4 27.Bc4 dc4 28.Rc4 Qd5 29.Qc3 Bd6+= 30.Bc1 Re8= 31.Bd2 Re6 32.Re1 Rg6 33.Qd3+/- Qh5 34.f4 Rf6 35.Qe4 Rc8 36.d5 h6 37.Rc3 Qh4 38.Rf1 Rg6 39.Kh1 Rf8 40.Rcf3 f5 41.Qc4 Be7?? 42.d6 (42…Kh7 43.de7 Qe7 44.Re1+-) 1–0. Hanzal,Marek (1825) – Odehnalova,Leona (1650), Klatovy op–B, 2004.

5.Nf3 Bg4 6.Be2 Be7 7.c4 0-0 8.Nc3 Qd7 9.d4 e4 (9...ed4!? 10.ed4 Rfe8=) 10.Nd2+= Qf5 (better 10...Be2 11.Qe2 Qf5+=) 11.Nde4?? (11.Bg4 Ng4 12.Nde4 Rae8+-) 11...Be2?? (better 11...Ne4 12.f3 Nc3 13.Bc3 Bh5=+) 12.Nf6+- Bf6 13.Qe2?? (13.Ne2 Rfe8+-) 13...Rfe8?? (better 13...Nd4 14.ed4 Rfe8–+) 14.Nd5+- Rac8 15.Nf6 (15.Rd1 Ne7 16.e4 Qg5 17.Nf6 Qf6+-) 15...Qf6 16.d5 Qg6? (better 16...Ne5+-) 17.dc6+- Qg2 18.Qf1 Qc6 19.Rg1 g6 20.Qd3 Qf3 21.Qd4 Re5 22.Qg4 (better 22.Rg3 Qe4 23.Qa7+-) 22...Re3 (22...Qg4 23.Rg4 Rh5+-) 23.fe3 Qe3 24.Kf1 Qd3 25.Qe2 Qf5 (25...Qe2 26.Ke2 a6 27.Bf6+-) 26.Ke1 (26.Kg2 d5+-) 26...Kf8 (26...Rf8 27.Kd2+-) 27.Rf1 Qd7 28.Kd2 Re8 29.Qf3 c6 (29...d5 30.Qf6 dc4 31.Bd4 Re2 32.Ke2 Qd5 33.Qg7 Ke7 34.Bc5 Kd7 35.Rf7 Kc8 36.Qh8 Qd8 37.Qd8 Kd8 38.Rd1 Ke8 39.Rf8) 30.Qf6 Re6 31.Qg7 (31.Qh8 Ke7 32.Rf7 Kf7 33.Rf1 Rf6 34.Qf6 Ke8 35.Qf8) 31...Ke7 32.Rf7 (32.Rf7 Kd8 33.Rd7 Kc8 34.Rb7 Re2 35.Ke2 h6 36.Qd7) 1–0. Lee Lok Yi – Leung Miu Ting, Baku Olympiad Women Selections, 2016.

5.Nf3 Bg4 6.Be2 Be7 7.d3 0-0 8.0-0 Re8 9.Nbd2 Bf8 10.h3 Bd7 11.c4 Qc8 12.Nh2 Bh3? (better is 12...a6=) 13.gh3+- Qh3 14.Bf3 Rab8 15.Bg2 Qh6 16.Ng4 Ng4 17.Qg4 Re6 18.Nf3 Ne7 19.Qh3 Qg6 20.e4 f5 (20...a5+-) 21.Nh4 Qg5 22.Bc1 Qf6 (22...Qh5 23.Nf5 Qg6 24.Nh4+-) 23.Nf5 (better is 23.ef5 e4 24.d4 Nf5 25.Qf5 Qf5 26.Nf5 c6+-) 23...Qg6 24.Qg3 Nf5 (24...Qh5 25.f4+-) 25.Qg6 (25.ef5 Qf5 26.Bh3 Qg6 27.Be6 Qe6+-) 25...hg6 26.ef5 gf5 27.Bd5 Kf7 28.Be6 Ke6 29.f4 Be7 30.fe5 de5 31.Be3 b6 32.Rad1 Rh8 33.Rf2 Rh3 34.Bc1 c5 35.b5 Bh4 36.Rh2 Rg3 37.Rg2 Rf3? 38.Rg7 f4 39.Rg4 Bg3 40.Rg7 Rf2?? 41.Rd2 Rf3 42.Kg2 Re3 43.Ra7 Re1 44.Bb2 Rb1 45.Re2 Kf5 46.Re5 Kg4 47.Rg7 Kh4 48.Re6 Rb2 49.Kf3 Rf2 50.Ke4 Re2 51.Kf5 Re6 52.Rh7 Rh6 53.Rh6 1–0. Fournier,Frederic (2010) – montymmm (2050), Echecs21, 2003.

5.Nf3 Bg4 6.Be2 Be7 7.h3 Bh5 8.0-0 Qd7 (8...e4 9.Nh4 Be2 10.Qe2=) 9.d3 h6 10.Nbd2 0-0-0 11.Ne5 (11.b5 Nb8 12.Ne5 de5 13.Bh5 Qb5+/-) 11...de5 (better is 11...Be2!? 12.Nd7 Bd1 13.Nf6 Bc2+=) 12.Bh5+/- Nh5 13.Qh5 f5? (13...g6 14.Qf3 f6 15.Qg3+/-) 14.Qe2 (14.b5 Nb8 15.Be5 Rhg8+-) 14...g5 (14...Bf6 15.Nc4+/-) 15.f4 (15.b5 Na5 16.Be5 Rhg8+-) 15...ef4 (15...gf4 16.b5 Na5 17.Be5+-) 16.ef4 (16.b5 Na5 17.Bh8 Rh8 18.ef4 Bc5 19.Kh1 Re8+-) 16...g4? (16...Rhg8 17.fg5 Bg5 18.Qf2+/-) 17.hg4 (17.Bh8 Rh8 18.hg4 Re8+-) 17...fg4? (17...Rhe8 18.Qf2+/-) 18.g3?? Nd4 19.Bd4 Qd4 20.Qf2 h5 21.Qd4+- Rd4 22.Ne4 h4 23.Rad1 h3 24.Kh2 Rh5 25.c3 Rd7 26.d4 Rhd5? 27.Rfe1 b6? 28.Nf2 c5 29.dc5 bc5? 30.Rd5 Rd5 31.bc5 Bc5?? 32.Ng4+- Rd3 33.Kh3 Rc3 34.a4 Bb4 35.Rb1 a5 36.Ne5 Rc7 37.Rb3 Kd8 38.Kg4 Ke8 39.Kf5 Kf8 40.Rd3 Rg7 41.g4 Be7 42.g5 Kg8 43.Rd7 Kh7 44.g6 Kh6 45.Nf7 Kh5 46.Rd1 Bh4 47.Rh1 Rg6 48.Rh4! Kh4 49.Kg6 Kg4 50.f5 Kf4 51.f6 Ke4 52.Nd6 Kd4 53.Nb7 Kc4 54.Na5 Kb4 55.f7 Ka5 56.f8Q Ka4 57.Qc5 Kb3 58.Kf5 Kb2 59.Ke4 Kb3 60.Kd3 Kb2 61.Qc4 (61.Qc4 Kb1 62.Qb5 Kc1 63.Kc3 Kd1 64.Qf1; 61.Qb5 Ka3 62.Kc3 Ka2 63.Qb2) 1–0. Fournier,Frederic – Kedar, KasparovChess.com rated blitz game, 2002.

5.Nf3 Bg4 6.Be2 Be7 7.h3 Bh5 8.0-0 g6 (8...e4!? 9.Nh4 Be2 10.Qe2 Qd7=) 9.c4 (9.g4 Bg4 10.hg4 Ng4+/-) 9...0-0 (9...e4 10.Ng5 Be2 11.Qe2+/-) 10.d3 (10.g4 Ng4 11.hg4 Bg4+/-) 10...a5 11.b5 Na7 12.Nbd2 b6 (12...Bf3 13.Bf3 (13.gf3?! Re8=) 13...c6 14.a4+/-) 13.a4 c6 14.Rc1 (14.g4!? Ng4 15.hg4 Bg4+-) 14...Bf3+/- 15.Nf3 (worse is 15.gf3 Qd7 16.Kh2 Rae8=) 15...d5 (15...Qc7 16.d4 Nd7 17.Bd3+/-) 16.Qb3 (16.Ne5!? Rc8+-) 16...e4+/- 17.de4 de4 18.Nd4 (18.Ng5 Rc8+/-) 18...Bb4 19.Ba3 (19.Rfd1!? Qe7 20.c5 bc5 21.Nc6 Nc6 22.bc6+/-) 19...c5= 20.Nc2 Qd2 21.Bg4 (better is 21.Bb4 ab4 22.Nd4 cd4 23.Rc2 Qc2 24.Qc2+/-) 21...Ng4–/+ 22.hg4 Qd6 (22...Qe2 23.f3–/+) 23.Rfd1 Qe7 24.Nb4 ab4 25.Bb2 Qe6 (25...Qh4 26.Rd7+=) 26.Ba1 Nc8 27.Qb2 f6= 28.Rd5 Ne7 29.Rd2 Qg4 30.Rcd1? Qe6?? 31.Rd6= Qf7 32.Rb6 Rad8 33.Rd8+/- Rd8 34.Rf6 Qg7?? 35.Rd6!+- (35.Rd6 Qb2 36.Rd8 (36.Bb2?? Rd6 37.a5 Rd2–+) 36...Kf7 37.Bb2+-) 1–0. Fournier,Frederic – angelalber (1605), Active, 2006.

5.Nf3 Bg4 6.h3 Bf3 7.Qf3 Be7 8.Qd1 (8.b5 e4 9.Qg3 Nb8+/-) 8...Kf8 (8...a6!?=) 9.Be2+= g6 10.d3 Kg7 11.Nd2 Rf8 12.Nf3 Kg8 13.0-0 Ne4?? (better is 13...a6+=) 14.de4+- Bg5 (14...a6 15.Qd5+-) 15.Ng5 Qg5 16.Bf3 Nb4 (16...Qh4+-) 17.ab4 c5 (17...a6 18.Qd5 Ra7 19.Bg4+-) 18.bc5 (18.bc5 dc5 19.Qd6+-) 1–0. Fournier,Frederic (1985) – lucia94(C) (1700), Active Blind, 2007.

5.Nf3 g6 6.Be2 Bg7 7.d3 0-0 8.Nbd2 Qe7 9.0-0 Bd7 10.Re1 Rad8 11.Qc1 Bc8 12.c4 e4 13.de4+= Ne4 14.Bg7 Kg7 15.a4 Bf5 16.a5 Qf6 17.b5+= Ne5 18.Nd4 Nc5 19.Nf5 Qf5 20.Qa3 Qc2 21.Ra2 Qf5 22.Qc3 Kg8 23.Nf3 Ned3 24.Bd3 Qd3 25.Qd3 Nd3 26.Rd1 Nc5 27.Kf1 Ne4 28.Ra3 Kg7 29.Ke2 f5 30.Rd5 f4 31.Nd4 Rde8= 32.f3 Nf6=+ 33.e4 Nd5 34.cd5= a6 35.Rc3+= Rf7 36.ba6 ba6 37.Rc6 Rfe7 38.Ra6+/- Re5 39.Ne6 R8e6 40.de6 Kf6 41.Rc6 d5?? 42.Rc7 Ke6 43.a6 de4 44.a7 ef3 45.Kf3 Ra5 46.Kf4 h5 47.Rg7 Kf6 48.Rb7 g5 49.Ke4 Ke6 50.Rh7 Ra4 51.Kd3 h4 52.Kc3 Kd6 53.Kb3 Ra5 54.Rg7 (54…Kc6 55.g3+-; 54.Kb4 Ra1 55.Kb5 h3 56.gh3 Ke5+-) 1–0. uno (1870) – nest (1870), ICC, 2003.

5.h3 a6 6.Nf3 Bf5 7.d3 Be7 8.Be2 0-0 9.Nbd2 e4 10.de4 Ne4 11.Ne4 Be4 12.Bd3 Bd3 13.Qd3 Bf6 14.Bd4 (14.Bf6 Qf6 15.0-0 Rfe8=) 14...Bd4 (14...Nd4 15.ed4 Re8 16.Kd2+=) 15.Nd4= Nd4 16.Qd4 Re8 17.h4 (17.0-0 Re5=) 17...Qe7 18.Rd1 Qe4 19.Qe4 Re4 20.Ke2 a5 21.f3 (21.b5 Rc4=) 21...Re5 22.f4 Re4 23.b5 (better is 23.Rd4!? Re7 24.g4=) 23...Rae8–/+ 24.Rd3 Rf4 25.b6 cb6 26.Rd6 Rf6 (better is 26...Ra4!? 27.Rd3 h5–/+) 27.Rf6= gf6 28.Rd1 Kf8 29.Rd3 Ke7 30.Rb3 Rg8 31.Kf3+/- Kd7 32.Rb6+- Kc7 33.Rf6 Rf8 34.g4 b5 35.g5 Kb7 36.h5 b4 37.ab4 ab4 38.Rf4 Ka6 39.Rb4 Rc8 40.Rf4 Rc7 41.c4 1–0. Pozanco Romasanta,Marc (1725) – Climent Benitez,Africa, ESP–ch U12 Padron, 2008.

6.b5 Nb8 7.Nc3 0-0 8.Nd5 Nd5 9.cd5 Nd7 10.Bd3 Nc5–/+ 11.Bc2 f5 12.f4? ef4–+ 13.ef4 Qe8 14.Ne2 Bf6?? 15.Bf6=+ Rf6 16.0-0 Ne4 17.Re1 Qg6?? 18.Be4 fe4= 19.Ng3 Bf5 20.Nf5 Qf5–/+ 21.Qe2 Re8 22.Rac1 Qd5 23.Rc7=+ Rf4 24.Rf1 Qd4 25.Kh1?? Rf1 26.Qf1 Qd2 27.Qf7 Kh8 28.Qe8# (28.Qg7?!=) 1–0. Nautiluschess – Marsel, ICS blitz, 2001.

6.Nc3 Be6 7.Nf3 a6 8.d4 ed4 9.ed4 Bg4 10.Be2 0-0 11.d5 Nb8 12.0-0 Nbd7 13.Nd4 Ne5 14.f3 Bd7 15.f4 Neg4 16.Qd3 g6 17.h3 Nh6 18.g4 Ne8 19.f5 Ng7? (19...gf5 20.Bc1 Bg5 21.gf5 Bc1 22.Rac1+=) 20.Rf3 Bh4 21.Raf1 gf5 22.gf5 Qg5? (22...Kh8+-) 23.Kh1 Rae8 24.Bc1 Qf6 25.Ne4 Re4 26.Qe4 Re8 27.Qd3 Nh5? 28.Rg1 Kh8 29.Re3 Ng7 30.Re8 Be8 31.Qe3 Ng8 32.Bb2 Bd7 33.Qd2 Qe7 34.Ne6 Bf6 35.Bf6 Nf6 36.Ng7 Qe4 37.Rg2 Qh4 38.Qe3 Ne4 39.Bd3 Nf6 40.Qg3 Qh6 41.Nh5 Qc1 42.Rg1 Qg1+- 43.Qg1 Nh5 44.Qg5 Ng7 45.f6 Ne8 46.Qh6 (46.Qh6 Nf6 47.Qf8 Ng8 48.Qf7 Nf6 49.Qf6 Kg8 50.Qe7 Bh3 51.Bh7 Kh8 52.Qf7 Bg2 53.Kg2 c6 54.Qg8#) 1–0. Lenda,Lukasz (1855) – Marszalek,Jakub (1645), Mistrzostwa Malopolski Gr–B Poland, 2011.

6.Nc3 Be6 7.Nf3 e4 8.Ng5+= Bf5 9.Qc2 Ne5 10.Nge4 Ne4 11.Ne4 Bf6? 12.Nf6 Qf6+/- 13.e4 Bg6 14.Be2 c6 15.0-0+- Qf4 16.d3 h5 17.g3 Qh6 18.f4 Ng4 19.Bg4 hg4 20.f5 Qe3 21.Rf2 Bh5 22.Bg7 Rh7 23.Bf6 Kd7 24.Qd2 Qb6 25.d4 Re8 26.Qf4 c5? 27.dc5 dc5 28.Rd1 Kc8 29.Rd6 Qc7 30.Rfd2 b6 31.b5 (31...Rh6 32.Qh6+-) 1–0. Schlesinger,L – Pitschak,Rudolf, Braunau, 1925.

6.Be2 0-0 7.h3 h6 8.Qc2 a6 9.Nf3 Qd7 10.d4= e4 11.Nfd2+/- d5 12.cd5 Nd5 13.Qe4 Qf5? 14.Qf5+- Bf5 15.e4 Be6 16.ed5 Bd5 17.0-0 Bf6 18.Bf3 Rad8 19.Bd5 Rd5 20.Nc3 Rd4 21.Nce4 Rd7?? 22.Bf6+- gf6 23.Nf6 Kg7 24.Nd7 Rd8 25.Nc5 Rd2 26.Rfd1 Rd1 27.Rd1 b6 28.Na6 Ne7 29.Nc7 Kf8 30.Rd8 Kg7 31.Ne8 Kg6 32.Rd6 Kf5 33.g3 Nc8 34.Ng7 Kg5 35.f4 1–0. Gross,W – Euler,x, 1993.

6.Nf3 Bg4 7.Be2 Nd7 (7...e4!? 8.Ng5 Be2 9.Qe2 h6+=) 8.d4= e4 9.Nfd2 Be2 10.Qe2 Nf6 11.Nc3 Qd7 12.Nce4 Ne4 13.Ne4 Bf6 (better is 13...0-0!?+/-) 14.Nf6+- gf6 15.g3 (15.d5 Ne7+-) 15...0-0-0 16.0-0-0 Rde8 17.Qf3 f5 18.h4 Ne7 19.d5 Rhg8 20.Rhe1 Ng6 21.e4 (21.Qh5!? Ne5+-) 21...Ne5 22.Be5 de5? (better is 22...Re5 23.ef5 Rf5+/-) 23.Qf5+- Qf5 24.ef5 f6 25.c5 Rg4 26.d6 cd6 27.Rd6 Rf8 28.Red1 Rc4 29.Kb2 Re4 30.R1d2 Kc7 31.Re6 Rf7 32.Kc3 Re1 33.f4 Rg1 34.fe5 fe5 35.Re5 Rg3 36.Rd3 Rg4 37.Rh3 Rf4 38.Rhe3 Rh4 39.Re7 Re7 40.Re7 Kc6 41.f6 Rh3 42.Kb2 Rh2 43.Kb3 h5 44.f7 Rf2 45.Re6 Kd7+/- 46.Rh6 Rf7 47.Rh5 Rf3 48.Ka4 Kc6 49.Rh6 Kd5 50.Rd6 Kc4+/- 51.Rd7 b5? 52.cb6!+- ab6 53.Rc7 Kd5 54.Kb5 Ra3 55.Kb6 Rb3 56.b5 Kd6 57.Rc6 Kd7 58.Rc5 Kd6 59.Rc6 Kd7 60.Rc1 Rf3 61.Kb7 Rf8 62.b6 Rf6 63.Ka7 Rf8 64.b7 1–0. Fournier,Frederic (1880) – jldelgaran (1650), Active, 2011.

5.c4 Nb6 6.c5 dc5=+ 7.bc5 Bc5 8.Be5 0-0 9.Nf3 Re8 10.Be2 Bg4 11.Bb2 Bd6 12.h3 Bd7 13.d3 Na4–/+ 14.Qc2 Nb2 15.Qb2 Bc6 16.Nbd2 Bd5 17.0-0 Qe7 18.Rfc1 b6 19.Nc4 c5 20.Nd6 Qd6 21.d4 Rac8 22.dc5 Rc5 23.Rc5 bc5 24.Rd1 Qe7 25.Nd2 Rd8 26.Qc2 Qb7 27.Bf3 Bf3 28.Nf3 Rd1 29.Qd1 Qc7 30.Nd2 Kf8 31.Nc4+= Ke7 32.Qd3 Qd7 33.Qb3 ½–½. tossubanaani – kofti, ChessWorld.net, 2005.

5.c4 Nb6 6.d3 Be7 7.Nf3 Bg4 8.Be2 0-0 9.0-0 c6 10.Nbd2 Qc7 (10...a5 11.Qc2=) 11.h3 Bf3 12.Nf3 g6 (12...a5 13.Qc2+=) 13.Nd2 Rfd8 ½–½. Zaichenko,Andrey – Lupinacci,Nicola, FICGS, 2008.

5.c4 Be7 6.Nc3 a5 7.b5 0-0 8.Qc2 Nc5 9.d4 ed4 10.ed4 Ne6 11.d5 Nc5 12.Be2 Re8 13.Nf3 Nh5 14.0-0 Nf4 15.Rfe1 Qd7 16.Nd4 Bf6 17.Bg4 Qd8 18.Re8 Qe8 19.Nce2 Nfd3 20.Bc8 Rc8 21.Rd1 Nb2 22.Qb2 a4 23.Qc2 Qe5 24.Nc3 Re8 25.h3 Nb3 26.Nde2 h6 27.Re1 g6 28.Rd1 Bg7 29.g3 Nc5 30.Nd4 Ne4 31.b6 Nc3 32.Qc3 cb6 33.Qc2 Qh5 34.Qa4 Re4 35.Nb5 Be5 36.Kg2 Re3 37.Nd4 Bd4 38.fe3 Qe2 39.Kh1 Be3 40.Rg1 Bg1 41.Kg1 Qf3 42.Qa8 Kg7 43.Qb7 Qg3 44.Kf1 Qh3 45.Ke2 Qg2 46.Ke3 h5 47.Qc7 Qg3 48.Ke2 h4 49.Qb6 h3 50.Qd4 Kg8 51.Qf2 Qa3 0–1. Baer,Werner (1715) – Woelfelschneider,Peter (1700), TT–02 TSC, 2002.

5.Bc4 d5 6.Bb3 c6 7.Ne2 Bd6 8.f4 0-0 9.0-0 Re8 10.c4 a6 (10...dc4 11.Bc4 Nb6 12.Bb3=+) 11.cd5= cd5 12.fe5 Ne5 13.Nbc3 Nd3 14.Rb1 Ng4 15.h3?? (15.g3 Nh2 16.Rf7 Kf7 17.Bd5 Kf8 18.Kh2 Qh4 19.Kg1 Bg3 20.Ng3 Qg3 21.Bg2 Qf2 22.Kh1 Qh4 23.Kg1-+) 15...Bh2-+ 16.Kh1 Ndf2 17.Rf2 Nf2 18.Kh2 Nd1 19.Rd1 Qd6 20.Kg1 Be6 21.Nd4 (21.Nf4 d4 22.Ne4 Qc6 (22...Bb3?! 23.Nd6 Bd1 24.Ne8 de3 25.Nf6 gf6 26.de3-/+) 23.Ne6 fe6-+ (23...Qe4?! 24.Ng5 Qf5 25.Nf7-+)) 21...Rac8 22.Nce2 h6 23.Nf3 (23.Rf1 Qe5-+) 23...a5! 24.Be5 (24.ba5 Qa6 Double attack (24...Qa6 Decoy)) 24...Qe7 25.Nf4 (25.Ba4 Bd7 26.Bd7 Qd7 27.ba5 Qb5-+) 25...ab4 26.ab4 (26.a4 Qc5-+) 26...Qb4 27.Ba2 (27.Rb1 Qe4 28.Re1 b5-+) 27...Qa4 (27...Qa3 28.Ra1 Rc1 29.Rc1 Qc1 30.Kh2-+) 28.Ra1 Ra8 (better 28...Qd7!? 29.Bd4-+) 29.Bd5 Qa1 (29...Qd7!? 30.Ra8 Ra8 31.Be4-+) 30.Ba1 Ra1 31.Kf2 b5 (31...Bd5 32.Nd5 Ra5 33.Nc3-+) 32.Bc6 Rb8 33.Ne6 fe6 34.Nd4 (34.Bd7 Rb6 35.Ne5 Ra2-+) 34...b4 35.Ne6 (35.Nb3 Ra3 36.Bd7 Rb6-+ (36...Rb3?! 37.Be6 Kf8 38.Bb3-/+)) 35...b3 36.Bd5 Kh8 37.Nf4 g5 (37...g5 38.Ng6 Kg7-+) 0-1. FeegLood (2610) - Elda64 (2725), lichess.org, 2015.

5.Bc4 Be7 6.Ne2 0-0 7.0-0 c6 8.f4 d5 9.Bb3 e4 10.c4 Re8 (10...dc4 11.Bc4 Nb6 12.Bb3=+) 11.cd5 cd5 12.Nbc3 Nb6 13.Nd4 Be6 (13...a5 14.ba5 Bg4 15.Qb1 Ra5 16.Rc1=+) 14.f5 (14.Ne6 fe6 15.d3 ed3 16.Qd3 a5=) 14...Bd7 15.Qe1 (15.d3 ed3 16.Qd3 Rc8=) 15...Bc6 (15...a5 16.ba5 Nc4 17.Bc4 dc4 18.Qe2=+) 16.Qg3 a6 17.Nce2 (17.Rac1 Bd6 18.Nc6 bc6=) 17...Bd6 (17...Ba4 18.Ba4 Na4 19.Bc3=+) 18.Nf4 Be5 (18...Bd7 19.Rfc1=+) 19.Rac1 (19.Nc6 Bf4 20.Nd8 (worse 20.ef4 bc6 21.Rfc1 Rc8+=) 20...Bg3 21.Bf6 (21.hg3?! Rad8 22.Rac1 Rc8=) 21...gf6 22.Nb7+/- (22.hg3?! Red8 23.d4 Rac8=)) 19...Nbd7 (19...Qd6 A) 20.Nc6? Bb2 (20...bc6?! 21.Be5 Re5 22.Ne2=) 21.Nd4 Bc1 22.Rc1 Rac8-+; B) 20.Ba2=+) 20.Qh4 (20.Nc6 bc6 21.Be5 Ne5=) 20...h6 (20...a5 21.d3=+) 21.g4 (21.Rc2 Qb6=) 21...Rc8 22.Qg3 Nh7 (22...Qe7 23.Rc2=+) 23.h4 Qe7 24.Kh2 (better 24.Kg2=) 24...f6?? (24...Nhf6!?=+) 25.Qf2?? (better 25.Nc6 bc6 26.Rc6 Bf4 27.Bd5 (27.ef4?! Rc6 28.Bd5 Kh8 29.Bc6 Qd6+-) 27...Kh8 28.Qf4 (28.ef4?! Rc6 29.Bc6 Qd6+-) 28...Rc6 29.Bc6+-) 25...Qd6= 26.Kh3 Nhf8 27.Nfe6 (27.d3 ed3 28.Nd3 Nb6=) 27...Kf7 (27...Ne6!? 28.fe6 Nf8-/+) 28.Nf8 (28.Rc2 Nb8=) 28...Nf8 (28...Kf8 29.Rc2=+) 29.Rcd1 (29.Qg2 Bd4 30.Bd4 Nd7=) 29...Rcd8 (29...a5 30.ba5 Bd4 31.ed4=+) 30.d3= ed3 (30...Bd4 31.Bd4 Bb5 32.Bc2=+) 31.Rd3 Bd4 32.Bd4 (32.Rd4 Nd7+=) 32...Re4 (32...Bb5 33.Rc3 Bf1 34.Qf1=+) 33.Kg2?? (33.Rc1 Nd7+=) 33...Rde8?? (better 33...Bb5!? 34.Rc3 Bf1 (worse 34...Rg4 35.Kh3 Rd4 36.ed4=+) 35.Kf1 Rg4-/+) 34.Kf3 (better 34.Qg3!? Qd7 35.Rc3+/-) 34...Nd7=+ 35.Rfd1 Ne5 36.Be5 Qe5 37.Bd5?? (better 37.b5 ab5 38.Ke2-/+) 37...Bd5-+ 38.Rd5 (38.Ke2 Bc4 39.Ke1 Rd8 40.Rd7 Rd7 41.Rd7 Ke8-+) 38...Re3 39.Kg2 Qe4 40.Kg1 Re7 (40...Qg4 41.Kf1 Rf3 42.Rd7 Kf8 43.R7d2-+) 41.Rd7?? (better 41.R5d4 Qe5 42.R4d3=+) 41...Qg4-+ 42.Kf1 (42.Qg2 Rg3 43.Re7 Ke7-+) 42...Rf3 43.Re7 Ke7 44.Ke2 (44.Re1 Kf7 45.Re3 Rf5 46.Qf5 Qf5 47.Ke1-+) 44...Rf2 45.Ke3 Qf4 (45...Qe2 46.Kd4 Rf4 47.Kc3 Rc4 48.Kb3 Qc2) 46.Kd3 Rf3 47.Ke2 (47.Kc2 Qc4 48.Kb1 Rb3 49.Ka1 Qc3 50.Ka2 Qb2) 47...Qc4 (47...Qe3) 48.Kd2 (48.Kf3 Qc3 49.Ke2 Qe5 50.Kd3 Qf5 51.Ke3 Qh3 52.Ke2 Qh4 53.Rd3-+) 48...Rf2 (48...Qc3 49.Ke2 Qe3) 49.Ke3 Qc2 (49...Qe2 50.Kd4 Rf4 51.Kc3 Rc4 52.Kb3 Qc2) 50.Rd7 (50.Rd7 Kd7 51.Kd4 Rd2 52.Ke3 Qc3 53.Ke4 Rd4; 50.Kd4 Qd1 51.Kc5 Qd6 52.Kc4 b5 53.Kc3 Qd2 54.Kb3 Qe3) 1-0. FeegLood (2495) - TheChessPrince (2310), Time forfeit, lichess.org, 2016.

5.Bc4 Be7 6.Nh3 c6 7.f4 (7.Bb3 d5=+) 7...d5 (7...Nb6 8.Be2-/+) 8.Bb3 (8.Be2 e4=+) 8...ef4 9.Nf4 0-0 10.0-0 Ne5?? (better 10...a5=) 11.Be5+- Nd7 (11...a5 12.ba5 Ra5 13.Nh5+-) 12.Bb2 a5 13.c4 ab4 (13...dc4 14.Bc4 ab4 15.ab4 Ra1 16.Ba1 Bb4 17.Bg7 Kg7 18.Qg4 Kh8 19.Nh5+-) 14.ab4 Ra1 15.Ba1 Bb4 (15...dc4 16.Bc4 Bb4 17.Bg7 Kg7 18.Qg4 Kh8 19.Nh5+-) 16.cd5 Nc5 17.Bc2 cd5 18.Qh5 g6 (18...f5 19.Qf3+-) 19.Qd5 (better 19.Qh6 f6 20.Bg6+-) 19...Qe7 (19...Be6 20.Qe5 f6 21.Qb2 Bd2 22.Qa3+-) 20.Qc4 (better 20.Qd4 f5 21.Qh8 Kf7 22.Qh7 Ke8 23.Qe7 Ke7 24.Ng6 Kf7 25.Nf8 Kf8+-) 20...Ba5 (20...Bd2 21.Nd2 Qe3 22.Kh1 Nd7+-) 21.Nd5 (21.Nd5 Qe6 22.Qc5+-) 1-0. FeegLood (2660) - jimakos (2660), lichess.org, 2016.

5.Bc4 g6 6.Ne2 Bg7 7.0-0 0-0 8.f4 c6 9.Bb3 ef4 10.Nf4 d5 11.c4 Re8? (better 11...dc4!? 12.Bc4 Nb6=) 12.cd5+/- Nd5 13.Bg7 Nf4 14.Rf4 Kg7 15.Rf7 Kh8 16.d4 (better 16.Qc2+/-) 16...Ne5?? (16...Re3!? 17.Ra2 Nf6=) 17.Rf1 (better 17.de5 Qd1 18.Bd1 Re5 19.Kf2+-) 17...Bg4 (17...Ng4 18.d5 Qg5 19.Qd4 Re5 20.dc6 Qe3 21.Qe3 Re3 22.Bd5 bc6 23.Bc6+/-) 18.Qc1 Qe7 (better 18...Nd7!?+-) 19.de5 Qe5 20.Re1?? (better 20.Nc3 Qe3 21.Kh1+-) 20...Rf8?? (better 20...Qa1 21.h3 Bf5 22.Qc3 Qc3 23.Nc3 a5-+) 21.Qc3+- Qc3 22.Nc3 Kg7 (22...Rae8 23.e4+-) 23.e4 (23.h3 Bc8+-) 23...Rfe8 24.e5 Rad8 25.h3 Be6 26.Be6 Re6 27.Re3 (27.Rad1 Rd1 28.Nd1 Kf7+-) 27...Rd4 28.Rf1 a5 (28...Rd7 29.g4+-) 29.ba5 Rc4 30.Kf2 (30.Rb1!? Re7 31.Rb6 Rc5+-) 30...Rc5 31.Kf3 Rce5 32.Rfe1 (32.Re5 Re5 33.Rb1 Kh6 34.Rb7 Ra5+-) 32...Kf6? (32...Rf5 33.Ke2 Re3 34.Ke3 Ra5 35.a4+-) 33.Ne4 (33.Re5 Re5 34.Re5 Ke5+-) 33...Ke7? (33...Kg7 34.Ng3 Rf6 35.Ke2 Ra5 36.Ne4+-) 34.g4 (better 34.Nc5 Re3 35.Re3 Re3 36.Ke3 Kd6 37.Nb7 Kd7 38.Nc5 Kc8+-) 34...c5 (34...Kf8+-) 35.Kf4 (better 35.Nc5 Re3 36.Re3 Re3 37.Ke3+-) 35...Rf5 (35...c4+-) 36.gf5 gf5 37.Kf5 Kd7 38.Nf6 (better 38.Nc5 Kc7 39.Re6 Kc8 40.Re7 h6 41.Rd7 Kb8 42.Rb7 Ka8 43.Re8) 38...Ke7 39.Re6 Kd8 40.Ke5 (40.Ke5 Kc7 41.Nd5 Kc8 42.Nb6 Kc7 43.Re8 Kc6 44.Rb1 c4 45.Rc8; 40.Re7 Kc8 41.a6 ba6 42.Rh7 c4 43.Re8) 1-0. FeegLood (2495) - pashpash (2405), lichess.org, 2016.

5.Bc4 g6 6.Ne2 Bg7 7.0-0 Qe7 8.f4 0-0 9.Nbc3 c6 10.Qe1 d5 11.Bb3 ef4 12.Nf4 Ne4 13.Ncd5 (13.Nd1 Ne5=) 13...cd5=+ 14.Nd5 Qd8 15.Bg7 Kg7 16.d3 Nef6 17.Qc3 b6?? (better 17...a5=) 18.Rf2+- Bb7 19.Nf6 Nf6 20.Raf1 Rc8 21.Qf6 Qf6 22.Rf6 Rc7 23.e4 1-0. FeegLood (2800) - Chess_Network (2500), lichess.org, 2017.

5.Bd3 g6 (5...a5 6.Nc3=+) 6.Nc3 Bg7 7.Nge2 b6 8.f3 Bb7 9.Ng3 h5 10.0-0 h4 11.Nge4 d5 12.Ng5 h3 (12...Qe7!?=) 13.Nh3+= d4? (13...Qe7 14.Nb5 Kd8 15.f4+=) 14.Ne4 (14.ed4!? ed4 15.Nb5+-) 14...Ne4 15.fe4 Qh4 16.Bc4 (better 16.Qf3 Rf8 17.ed4 ed4 18.Rae1+/-) 16...Qh5?? (better 16...Qe4!? 17.Qe2 Rh3 18.gh3 de3 19.de3 f5=) 17.Bd5?? (17.Qh5 gh5 18.Rf7 Bf6 19.ed4 ed4+-) 17...0-0-0? (better 17...Qd1 18.Rad1 Bd5 19.ed5 a5+/-) 18.Qe2?? (better 18.Qh5 Rh5 19.Bb7 Kb7 20.Rf7+-) 18...a6 (better 18...Qe2 19.ed4 Bd5 20.ed5 Qd2 21.Rf7 e4 22.Rg7 Qc2-+) 19.Bd4 (19.Bd4 Qe2 20.Bb7 Kb7 21.Bc3-+). xuanet (2805) - opperwezen (2810), lichess.org, 2016.

5.d4 Be7 6.Nf3 ed4 7.Nfd2 0-0 (better 7...de3!? 8.fe3 Ne5-+) 8.ed4 Re8 9.Be2 Bf8 (9...c5 10.0-0=) 10.0-0= a5 11.c4 Nb6 (11...ab4 12.ab4 Ra1 13.Ba1=) 12.Nc3 Bf5 13.c5 (13.Re1 d5 14.c5 ab4 15.ab4 Ra1 16.Ba1 Nc8+=) 13...Nbd5 14.Nd5 Nd5 15.Bf3 c6 (15...Be6 16.Re1=+) 16.Nc4 (16.Bd5 cd5 17.Qf3 Qg5=) 16...dc5 (better 16...ab4!? 17.Bd5 cd5-/+) 17.bc5= Be6 18.Bd5 Bd5 (worse 18...Qd5 19.Nb6 Qg5 20.Na8 Ra8 21.Re1+-) 19.Nb6 Ra6 20.Bc3 Rb6 21.cb6 Qb6 22.Qd2 a4 (22...Ra8 23.Qf4=) 23.Bb4 Bb4 24.Qb4 (24.ab4!? Ra8 25.Ra3+=) 24...Qb4=+ 25.ab4 Ra8 26.Rfe1 Kf8 27.f3 (27.Re3!?=) 27...a3-/+ 28.Re3 (28.Kf2 a2-/+) 28...a2 29.Kf2 Ra4 30.Re2 (30.b5 Rd4 31.bc6 bc6-+) 30...Rb4 31.Rd2 Rb1 (31...b5!? 32.Ke3-+) 32.Raa2 Ba2 33.Ra2 Rb4 34.Ke3 Rb3 35.Ke4 Ke7 36.Rd2 Rb5 37.g4 g6 38.h4 f5 39.Kf4 Kf6 (39...fg4 40.fg4 Kd6 41.Rg2-+) 40.g5 Kf7 41.Re2 (41.Rh2!?-/+) 41...Rd5-+ 42.Rd2 c5 43.Ke3 Rd4 44.Rb2 (44.Rd4 cd4 45.Kd4 Ke6-+) 44...Rb4 45.Rd2 Ke6 (45...Rh4?! 46.Rd7 Ke6 47.Rb7-+) 46.Rd8 f4 (46...Rh4!? 47.Rb8-+) 47.Kd3 Rb3 (47...Rd4 48.Rd4 cd4 49.Kd4-+) 48.Ke4 Rb4 49.Kd3 b6 50.Rh8 Rd4 51.Kc3 b5 52.Rh7 b4 53.Kb3 (better 53.Kc2-+) 53...Rd3 54.Kc4 Rc3 55.Kb5 b3 56.Ka4 (56.Rb7 Ke5 57.h5 gh5-+ (57...Rf3?! 58.hg6 Rg3 59.Kc5 Rg5 60.Rb3-+)) 56...c4 57.Rh6 (57.Ka3 Rf3 58.h5-+) 57...Rc2 (57...b2 58.Rg6 Kd5 59.Rb6 Rb3 60.Ra6 b1Q 61.Ra5 Kd4 62.Rd5 Kd5 63.h5 Qa2) 58.Rg6 Kd5 59.Rb6 Ra2 60.Kb4 Kd4?? (60...Ra1 61.Kc3 Rc1 62.Kb2 Rc2 63.Kb1 Kd4 64.Rd6 Kc3 65.Rd5 Re2 66.Rd1 b2 67.Rd6 Re1 68.Rd1 Rd1 69.Ka2 Ra1) 61.Rd6= Ke3 62.Rd1?? (better 62.Kc4 b2 63.Rb6 Kf3 64.Kc3=) 62...b2-+ (62...Kf3?! 63.Kc4 b2 64.Rb1=+) 63.Kc3 (63.Kc4 Ra1 64.Rd3 Ke2 65.Rb3-+) 63...Ra1 (63...Kf3?! 64.Rb1=+) 64.Rd2 (64.Kb2 Rd1 65.Kc2-+) 64...Rc1 65.Kb2 Kd2 66.Ka2 c3 67.Ka3 (67.g6 c2 68.Kb3 Rb1 69.Kc4 c1Q 70.Kd5 Rb5 71.Kd6 Qc5 72.Kd7 Rb7 73.Ke6 Re7 74.Kf6 Qe5) 67...Rc2 (67...Rb1 68.Ka4 c2 69.g6 c1Q 70.g7 Qc4 71.Ka5 Qb5) 68.g6-+ Rb2 69.g7 Kc1 (69...Rb8 70.Ka2 c2 71.g8Q Rg8 72.Kb2 c1Q 73.Ka2 Ra8 74.Kb3 Qc3) 70.g8Q+- Kb1 71.Qg1 Kc2 (71...Kc2 72.Qg6 Kd2+-) 0-1. blitzbullet (2530) - puppyluvr420 (2605), Rated Bullet game, lichess.org, 2016.

5.Be2 g6 6.d3 Bg7 7.Nd2 0-0 8.c4 h6 9.Ngf3 Nh7 10.Qc2 f5 11.0-0 Nhf6 12.Rfe1 Qe8 13.Nf1 (13.c5 dc5 14.bc5 e4 15.de4 fe4+=) 13...g5 14.Rad1 Qg6 15.e4 (15.c5 a5+=) 15...f4 (15...fe4!? 16.de4 Qe4= (16...Ne4? 17.Ng3+-)) 16.h3 g4 17.hg4 Ng4 18.N1h2 (18.c5 dc5 19.bc5 Bf6+/-) 18...Ndf6 19.Ng4 Ng4 (19...Bg4 20.c5+=) 20.Nh2 (20.c5 Be6+/-) 20...h5 (20...Nh2 21.Kh2 f3 22.Bf1 fg2 23.Bg2-/+) 21.d4 White prepares the advance c5 21...Be6 (21...ed4 22.c5+=) 22.c5 Bf6 (22...ed4 23.Nf3+=) 23.de5 (better 23.Nf3+/-) 23...Nf2? (better 23...Ne5 24.Nf3 h4+=) 24.ef6+- (24.Kf2?! Bh4 25.Kg1 Be1 26.Re1 dc5 27.Qc5 h4+-) 24...Qg3 25.Rf1 Nh3 (25...Nd1 26.Bd1 a5+-) 26.Kh1 Nf2 27.Rf2! Qf2 28.Rf1 Qh4 (28...Qg3 29.cd6 cd6 30.Qd2+-) 29.Qc3 (29.cd6 cd6 30.Qd2 Rf6 31.Bf6 Qf6 32.Qd6 Rf8+-) 29...Rf7 30.cd6 cd6 31.e5 (31.Qd2 f3 32.Bf3 Kh7+-) 31...Rc8 32.Qf3 (better 32.Qd4 Rc2 33.Qd6+-) 32...Rc2+/- 33.Bd4 Bg4 34.e6 (better 34.Qf4 Re2 35.ed6+-) 34...Bf3= 35.ef7 Kf7 36.Bf3 Rd2 37.Bc3 Rd3 38.Be1 (better 38.Bb2!?=) 38...Qf6-/+ 39.Bh5 Kg7 40.Bf3 (40.a4 d5-/+) 40...Ra3 (40...b5 41.Be2 Ra3 42.Bb5-/+) 41.Ng4 (41.Bb7 Qd4-/+) 41...Qb2 42.Bf2? (42.Bb7 a5 43.Rf4 Ra1-+) 42...Ra1 (42...Qb4!? 43.Re1 b5 44.Re4-+) 43.Ra1 Qa1 44.Kh2 Qb2 45.b5 (45.Ba7 Qb4 46.Bf2 b5-+) 45...a6 (45...Qb5!? 46.Bd4 Kg6 47.Ba7-+) 46.ba6 (46.b6 Qb5-+) 46...ba6 47.Bd5? (better 47.Bh4 Kf7 48.Nf6-+) 47...a5 48.Bh4 Qd2 49.Bf6 Kf8 50.Be4 (50.Bf3 a4-+) 50...a4 51.Bg5 a3 52.Bh6 (52.Bf3 d5 53.Bh6 Kf7-+) 52...Ke7 (better 52...Kf7!? 53.Bg5 a2 54.Bf6-+) 53.Bg5 (53.Bf3-+) 53...Ke6 54.Bh7 (54.Nf6 a2 55.Bd5 Kf5 56.Ba2 Qa2 57.Bf4 Kf4 58.Nh5 Kg4 59.Nf6 Kh4 60.Ne4 Qe2 61.Ng5 Qe5 62.Kg1 Kg3 63.Kf1 d5 64.Nh7 Qe3 65.Nf6 Qf2) 54...a2 55.Bg8 Kf5 56.Ba2 Kg4 57.Be7 Qa2 58.Bd6 (58.Bh4 f3 59.Bf2 Qf2 60.Kh1 Qg2) 58...Qd5 (58...f3 59.Kg1 Qg2) 59.Be7 (59.Bc7 f3 60.gf3 Kf3 61.Bg3 Qg5 62.Kh1 Kg3 63.Kg1 Qc1) 59...Qh5 (59...f3 60.Ba3 Qd2 61.Bd6 Qg2) 60.Kg1 (60.Bh4 Qh4 61.Kg1 Qe1 62.Kh2 Qg3 63.Kh1 f3 64.gf3 Kh3 65.f4 Qe1) 60...Qe5 (60...Kg3 61.Bh4 Qh4 62.Kf1 f3 63.Ke1 f2 64.Kd2 Qc4 65.Kd1 f1Q 66.Kd2 Qfe2) 61.Bb4 (61.Kf2 Qe3 62.Kf1 f3 63.gf3 Kf3 64.Bh4 Qe2 65.Kg1 Qg2) 61...Qe4 (61...Qe3 62.Kh1 f3 63.Bc5 Qe1 64.Bg1 f2 65.Kh2 fg1Q) 62.Kf1 (62.Be7 Qe1 63.Kh2 Qg3 64.Kh1 f3 65.gf3 Kf3 66.Bd6 Qg2) 62...f3 63.Be1 (63.Kg1 Qe2 64.gf3 Kf3 65.Bd6 Qg2) 63...Qe2 64.Kg1 Qg2 0-1. reza3136 (2295) - Arifars17 (2555), Lichess Liga 3C Team Battle, lichess.org, 2021.

5.Nf3 Be7 6.c4 0-0 7.Nc3 Re8 (7...a5 8.Be2=+) 8.Qc2 Bf8 (8...Nb6 9.d4 ed4 10.Nd4=) 9.Ng5 h6 10.h4 (10.Nge4 Ne4 11.Ne4 a5=) 10...g6 (better 10...a5=+) 11.Bd3? (better 11.Nge4=+) 11...hg5-+ 12.hg5 Nh5 13.Bg6 fg6 14.Qg6 Ng7 15.Qh7 Kf7 16.g6 Ke6 17.Nd5 (17.Qh3 Nf5 18.e4+-) 17...Nf6= 18.Qh3 Nf5 19.e4?? (better 19.g4 Bg7 20.gf5 Kd7 21.e4+=) 19...Nd5?? (better 19...Ne4 20.Qh7 Bg7-+) 20.cd5 (20.Qf5 Ke7 21.Qf7) 20...Ke7 21.ef5 Bg7 22.0-0-0 (22.Qh4 Kf8 23.Qd8 Rd8=) 22...Rf8 (22...a5!?=+) 23.g4 Qd7 (23...a5 24.Qh7 Rg8 25.f4 ab4 26.ab4+-) 24.f4 (24.Qh4 Ke8 25.d4 a5 26.de5 de5+- (26...Be5?? 27.Rde1 Qd8 28.f4 ab4 29.Qh7+-)) 24...c6 (better 24...a5!?=) 25.Rhe1 cd5 26.fe5 Qc7 27.Kb1 de5 28.Qg3 (28.Rc1 Qd6 29.Qh7 Ke8+-) 28...Kd8? (better 28...Bf5 29.gf5 Rf5 30.Be5 Be5+-) 29.Be5+- Be5 30.Re5 (worse 30.Qe5 Qe5 31.Re5 Bd7+-) 30...Re8 (30...Rh8 31.Rd5 Bd7 32.g7+-) 31.Rd5 (31.Re8 Kd7 32.Re7 Ke7 33.Qc7 Kf6 34.Qd6 Be6 35.Qe6 Kg5 36.Qe7 Kg4 37.Rg1 Kf4 38.Qe3 Kf5 39.Rg5 Kf6 40.Qe5) 31...Bd7 32.Qd3 Rc8 33.Rc1 (33.f6 Qc6 34.f7+-) 33...Qc1 34.Ka2 Rc7 (34...Rc2 35.Qc2 Qc2 36.Ka1 Re1) 35.Rc5-+ Qc2 (better 35...Rc5 36.bc5 Re1-+) 36.Qc2+- Rc5 (36...Rc6 37.Rc6 bc6 38.Qc5+-) 37.Qc5 Be6 (37...b6 38.Qd5 Kc7+-) 38.fe6 Re6 39.Qd5 Rd6 40.Qd6 Ke8 41.g7 (41.g7 Kf7 42.Qf8 Ke6 43.g8Q Kd7 44.Qd5 Kc7 45.Qdd6; 41.Qd5 Ke7 42.g7 b6 43.g8Q b5 44.Qgf7) 1-0. allyouneedisluft (2530) - learningfast (2400), Rated Bullet game, lichess.org, 2018. (=1.a3 d6 2.b4 Nd7 3.Bb2 Ngf6 4.e3 e5)

5.Nf3 Be7 6.Be2 0-0 7.0-0 b6 8.c4 Bb7 9.d3 c5 10.b5 Rc8 11.Nbd2 Re8 12.h3 Bf8 13.Nh2 d5 14.Ng4 d4 15.e4 Qc7 16.Nf6 Nf6 17.Nf3 Bd6 18.Bc1 Bf8 19.Bg5 Be7 20.Qd2 h6 21.Bh6 (21.Bh4!?=) 21...gh6–/+ 22.Qh6 Qd6 (22...Nh7 23.Qh5 Bf6 24.Nh4–/+) 23.Nh4 (23.Qg5 Kh8=) 23...Bf8 (23...Ne4!? 24.Nf5 Qh6 25.Nh6 Kh7 26.Nf7 Nd6 27.Ne5 Bg5–/+) 24.Qg5= Bg7?? (24...Kh8 25.f4 Nh7 26.Qg4=) 25.Nf5 (better is 25.Qg7! Kg7 26.Nf5 Kg6 27.Nd6+-) 25...Qf8= 26.f4 Rcd8 (26...Nh7 27.Qh4=) 27.Rf3 (better is 27.fe5!? Nh7 28.Nh6 (28.Qg7?! Qg7 29.Ng7 Kg7=) 28...Kh8 29.Qh5 Bh6 30.Rf7 Be3 31.Kh1+/-) 27...ef4 28.Rf4 Nh7 29.Qg3?? Kh8= 30.Ng7 Qg7 31.Rg4 Qf6 32.Rf1 Qh6?? 33.Rf7+- Qe3 34.Qe3 de3 35.Rb7 Nf6 36.Rh4 Kg8 37.Rh6 (37.Rh6 Rd7 38.Rg6 (38.Rf6?! Rb7 39.Rf3 a6+-) 38...Kh7 39.Rd7 (39.Rf6?! Rb7 40.Rf3 a6+-) 39...Nd7 40.Rg3+-) 1–0. Fournier,Frederic – parzifal (1615), Active, 2007.

5.Nf3 g6 6.c4 Bg7 7.Qc2 0-0 8.Be2 Re8 9.e4 a5 10.b5 Nc5 11.d3 Nh5 12.Bc1 (12.0-0 Nf4=) 12...Nf4+= 13.Bf1 Qf6 14.Be3? (better is 14.Nbd2!?+=) 14...Ncd3!–/+ 15.Bd3 (15.Kd1 Nc5–+) 15...Ng2–+ 16.Ke2 Bg4 (16...Ne3?! 17.fe3 (17.Ke3? Bg4 18.Nbd2 Bh6 19.Ke2 Bd2 20.Kd2 Bf3–+) 17...Bg4 18.Nbd2+=) 17.Nbd2 Nh4 (17...Ne3?! 18.fe3 Qg5 19.Kf2+=) 18.Rhg1 Bf3 19.Ke1? (better is 19.Kf1 h6 20.b6–+) 19...Ng2 20.Rg2 Bg2 21.Ke2 (21.Rb1 Qh4–+) 21...Qh4 22.Qc1 Qh2 23.Qg1 Qg1 24.Rg1 Bh3 25.Rg3 Be6 26.a4 c6 27.b6 d5 28.cd5 cd5 29.ed5 Bd5 30.Be4 (30.Rg1 Rac8–+) 30...Be4 31.Ne4 f5 0–1. Buck,Klaus Michael (1800) – Spornberger,Maximilian (2020), Arco op Arco di Trento, 2008.

5.Nf3 g6 6.c4 Bg7 7.Nc3 0-0 8.Qc2 a5 9.h4 (9.Be2 e4 10.Nd4 ab4 11.ab4 Ra1 12.Ba1 c5=) 9...ab4 10.ab4 Ra1 11.Ba1 Qe7 12.Ng5 h6 13.Nf3 c6 14.Be2 d5 Black prepares the advance e4 15.cd5 cd5 16.Nb5 (16.Qb3=) 16...d4 (better 16...e4!? 17.Nfd4 Qb4-/+) 17.ed4 (17.Na7 Nb6 18.Qc5 Qe6 19.Ne5 Qa2=) 17...e4 18.Ne5 Nd5 19.Qe4 Nb4 20.0-0 Nb6 21.Qb1 (21.Rc1 N4d5+=) 21...Bf5 22.Qb2 (22.Qb3 Bc2 23.Qf3 f6=) 22...N6d5 23.Bf3 Qh4 24.Bd5 (24.Nc3!? Nc7 25.Ng6 fg6 26.Qb4=) 24...Nd5-/+ 25.Nc3 Nf4 (25...Nb4 26.Nf3 Qe7=) 26.g3? (better 26.Qb7 Qg5 27.g3=+) 26...Nh3-+ 27.Kg2 Nf4 28.gf4?? (better 28.Kg1 Qh5 29.gf4 Be5 30.fe5-/+) 28...Be5 (better 28...Bh3 29.Kg1 Qf4 30.Qb7 Qg5 31.Kh2 Bf1-+) 29.Rh1?? (29.de5 Bh3 30.Kf3 Bf1 31.Ke3-+) 29...Qg4 30.Kf1 Bd3 31.Ke1 Qf3 (31...Bf4 32.Qb5 Bb5 33.Rf1 Re8 34.Ne4 Re4) 32.Qc1 Qh1 0-1. allyouneedisluft (2555) - learningfast (2370), Rated Bullet game, lichess.org, 2018. (=1.a3 d6 2.b4 Nd7 3.Bb2 e5 4.e3 Ngf6)

5.Nf3 g6 6.c4 Bg7 7.Be2 0-0 8.d3 a6 9.Nbd2 Rb8 10.0-0 Re8 11.Re1 Nf8 12.e4 Bg4 13.h3 Bf3 14.Nf3 (worse is 14.gf3 Nh5–/+) 14...Ne6 15.Bf1 Nh5 16.Bc1 Nhf4 17.Bf4 (17.g3!? Nh5 18.Be3+=) 17...Nf4= 18.Rc1 c6 19.g3 Ne6 20.Qd2 Qb6 21.Qe3 Qc7 22.Ng5 Nd4 23.Nf3? (23.Bg2 Bh6 24.f4 ef4 25.gf4 Bg7+=) 23...Ne6?? (better is 23...Bh6! 24.Qh6 Nf3 25.Kg2 Ne1 26.Re1 b5–+) 24.Ng5 Ng5 25.Qg5 Qb6 26.Qe3 Qc7 27.c5 d5 28.ed5 cd5 29.Bg2 Rbd8 30.Rcd1 Qe7 31.Qf3 h6 32.Qe2 Kh7 33.Qc2 Qg5 34.Qd2 Qe7 35.Qc2 Rf8 36.f4 Qc7 37.fe5 Be5 38.g4 Bh2 39.Kh1+= Bg3 40.Rf1 Bh4 41.d4 Bg5 42.Qd3 Rfe8 43.Rde1 Re1 44.Re1 Bh4 45.Rf1 Qe7 46.Qf3 f6 47.Qd3 Qf7 48.Qd1 Re8 49.Qf3 Bg5? 50.Qd5+- Qc7? 51.Qb7 Qb7 52.Bb7 Re3 53.Kg2 Ra3 54.c6 Ra2 55.Rf2 Ra3 56.c7 a5 57.c8Q (57.c8Q Rg3 58.Kg3 f5 59.Bd5 f4 60.Kf3 Bd8 61.Qd7 Be7 62.Qe7 Kh8 63.Qf8 Kh7 64.Qg8) 1–0. Fournier,Frederic (1690) – noablackdog, Active, 2006.

5.Nf3 g6 6.d3 Bg7 7.c4 0-0 8.Be2 Qe7 9.Nbd2 c6 10.0-0 e4 (better is 10...a5!?=) 11.de4 Ne4 (11...Rd8!?+/-) 12.Bg7+- Nd2 13.Qd2 (13.Bf8!? Nf3 14.Bf3 Kf8+-) 13...Kg7 14.Qd4 (14.Rfd1 a5+-) 14...Qf6 (14...Nf6 15.Rfd1 Rd8 16.c5+/-) 15.Qf6 (better is 15.Rad1!?+-) 15...Nf6+= 16.Rfd1 Rd8 17.Ra2 Be6 18.Rad2 Ne8 19.Nd4 d5 20.cd5 Bd5 (20...cd5 21.e4! Nf6+/-) 21.Bf3?? (better is 21.e4 Be4 22.Ne6 fe6 23.Rd8 Rd8 24.Rd8+-) 21...Bf3+= 22.Nf3 Rd2 23.Rd2 Nf6 24.Ne5 a5 25.ba5 (25.h4!?=) 25...Ra5–/+ 26.Rd3?? (better is 26.Nc4 Rc5 27.Rd4–/+) 26…Re5–+ 0–1. Fournier,Frederic (1915) – HiroNakamura (1650), Active, 2008.

5.Bb5 Nbd7 6.Nf3 a6 7.Be2 h6 8.d3 Nb6 9.c4 Be7 10.Nbd2 0-0 11.0-0 Bf5 12.e4 Bh7 13.Qc2 Nbd7 14.d4 ed4 15.Nd4 c5 16.Nf5 Bf5 17.ef5 Qc7 18.Rfe1 Rfe8 19.g3 Ne5 20.Bf1 Rad8 21.Bg2 Nc6 22.Ne4 cb4 23.Nf6 Bf6 24.Bf6 gf6 25.ab4 Re5 26.Rab1 Ne7 27.f4 Re1 28.Re1 d5 29.Qe2 Nf5 30.Bd5+/- Qb6 31.Kg2 Qb4 32.Qh5 Nd6 33.Re7 Rf8 34.Qg6 (34…Kh8 35.Qf6 Kh7 36.Rd7 (36.Bf7?! Nf7 37.Rf7 Rf7 38.Qf7 Kh8+-) 36...Qd2 37.Kh3+-) 1–0. Stapinski,R (2030) – Szydlowski, corr, 2004.

5.c3 Be7 6.Be2 0-0 7.Nf3 a6 8.0-0 Nc6 9.d4 e4 10.Nfd2 d5 11.Qc2 b5 12.a4 h6 13.ab5 ab5 14.Ra8 Qa8 15.Bb5 Qb7 16.Bc6 (16.Be2 Bd6+=) 16...Qc6= 17.Nb3 (17.Ba3 Bd6=) 17...Ra8 (17...Bb4 18.Ba3 Ba3 19.Na3=+) 18.N1d2 Bg4 19.Ra1 Ra1=+ 20.Ba1 (20...Bb4 21.c4=+; 20.Na1 Qb5=+) 1–0. slavisa11 – SirCharles, Live Game Caissa's Web, 2004.

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.a3).

5.Bc4?? Bc4-+ 6.d3 Be6 7.Nd2 Be7 8.Ne2 Nbd7 9.f4 (9.0-0 a5-+) 9...0-0 (9...Ng4 10.Nf1-+) 10.0-0 (10.e4 ef4 11.0-0 c5-+) 10...ef4 (better 10...Nd5!? 11.Nc4 b5 12.e4 bc4 13.ed5 Bd5 14.Nc3-+) 11.Nf4 Bg4 12.Qe1 Bh5 (12...Ne5 13.e4-+) 13.Qg3 Bg6 14.Nf3 Ne5! 15.Ne5 (15.Be5 de5 Combination; 15.Ne5 de5 Combination) 15...de5 16.Be5 Bd6 17.Bd6 Qd6 18.Rf2 Rae8 19.Raf1 Nd5 (19...Qe5 20.Re2-+) 20.Nd5 Qd5 21.Qc7 (21.e4 Qd4 22.Qc7-+) 21...Re3 22.Qf4 Re6 23.Qc7 Rf6! 24.Rf6 gf6 25.Rf6 (25.Re1 Qd4 26.Kf1 b5-+) 25...Qd4-+ 26.Rf2 Qf6?? (better 26...b6-+) 27.Rf6+- Kg7 28.Qc3 Kg8 1-0. FeegLood (2625) - IvoryRedLama (2065), lichess.org, 2015.

5.d4 ed4 6.Qd4 Nbd7 7.b5 c6 8.c4 c5 9.Qd1= Be7 10.Nf3 0-0 11.Bd3 Nb6 12.Nbd2 d5 13.cd5 13...Bd5 14.Qc2 Nbd7 15.0-0 Rc8 16.Rfc1 Bd6 17.e4+/- Ne4? 18.Be4+- Be4 19.Ne4 Bb8 20.Nfg5 Qe7 21.Nf3 c4?? 22.Qc3 f6 23.Ng3 Rc5? 24.a4 Rfc8 25.Ba3 Bd6 26.Re1 (26…Qf7 27.Ne4+-) 1–0. Vesson,Eric – Mazaltob,Gerald, Saint Quentin opB, 1999.

5.d4 Nbd7 6.c4 c6 7.Nc3 ed4 8.ed4 d5 9.c5 Be7 10.Bd3 0-0 11.Nf3 Qc7 12.0-0 Rfe8 13.Re1 Bf8 14.h3 Re7 15.Qc2 g6 16.a4 Nh5 17.b5 Nf4 18.Bf1 Bf5 19.Qd2 Rae8 20.a5 Bh6 21.Qd1 Re1 22.Ne1 Nf6 23.Bc1 Ne4? (better is 23...Bg7!?=) 24.Ne4+/- de4 25.Be3 (better is 25.g3!?+-) 25...Bg7 (25...cb5!? 26.Bb5 Rd8=) 26.a6+= Nd5 27.Qa4 (27.ab7 Qb7 28.bc6 Qc7+/-) 27...Nc3 (27...Ne3!? 28.fe3 Qg3=) 28.Qa5+= Qa5 29.Ra5 b6 30.cb6 ab6 31.Ra3 Nb5 32.Bb5 cb5 33.a7 Ra8 34.d5 b4 35.Ra6 Bc8?? 36.Rb6+- Ra7?? 37.Rb8 Ra1 38.Rc8 Bf8 39.Bh6 (39.Bh6 Re1 40.Kh2 Rh1 41.Kh1 e3 42.Rf8) 1–0. Almeida,JCGD – Oliveira Filho,C, BRA–ch sf2 Vitoria, 2002.

5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.a3).

5.Nh3 g6 6.Ng5= Qe7 7.Ne6 Qe6 8.Nc3 Bg7 9.Qf3 Nbd7? (better 9...d5=) 10.Qb7+- 0-0 11.Ba6 (11.Qc7 a5+-) 11...c5 12.bc5?? (better 12.e4+/-) 12...Nc5-+ 13.Qc6 Na6?? (better 13...Rab8 14.Bb5 e4-+) 14.Qa6+= Rfc8 15.Rb1 Nd5 16.Nd5 (better 16.0-0!?+/-) 16...Qd5= 17.Qd3 (17.0-0 Rc2 18.Bc3 e4=) 17...Qe6 (17...Qa2 18.c3 Rab8-+) 18.0-0+= Rd8 (18...Rab8!? 19.c3 Qa2=) 19.c4 d5 20.cd5 (20.c5 Rac8 21.Rfc1 Qc6+/-) 20...Rd5+= 21.Qe2 Rad8 22.d4 (better 22.Bc3!?+=) 22...ed4=+ 23.e4 R5d7 (23...f5 24.f3=+) 24.Qd3= Qb6 (24...f5 25.f3=) 25.f3 Qa5 26.Kh1 Rc8 (26...Rb7 27.Ba1 Rb1 28.Rb1=) 27.Rfc1 Rc1 28.Rc1 h6 29.Rc8 (29.f4!?=) 29...Kh7=+ 30.h3?? (30.g4 Rb7 31.Bc1 Qe1 32.Kg2 Be5=+) 30...Qe5 (better 30...Qe1 31.Kh2 Be5 32.f4 Bf4 33.g3 Be3-+) 31.Rc1 (31.Kg1 Qg3 32.Bc1 Be5=) 31...Qf4=+ 32.Rd1? (32.Qf1=+) 32...Re7?? (better 32...Be5 33.Kg1 Qh2 34.Kf1 Bg3-+) 33.Bc1 (33.Bd4? Rd7 34.e5 Be5 35.Be5 Rd3 36.Bf4 Rd1 37.Kh2 Rd3-+) 33...Qe5 34.Bb2 f5 (better 34...Qg3!?=) 35.Bd4+/- Qe6 36.Bg7 Rg7 37.ef5 gf5 38.Qf1 Qf6 39.Qg1 Rg5? (39...Qg6 40.Rd5+/-) 40.Rf1 (40.Rd7 Rg7 41.Ra7 Qc3+-) 40...Qg6? (40...Rg7 41.Qc5+/-) 41.Rf2 (better 41.f4!? Rg3 42.Qa7 Qg7 43.Qg7 Rg7 44.a4+-) 41...Qg7 42.f4 Rg6 (better 42...Rg3 43.Qc1 Qe7+/-) 43.Qh2 (better 43.Re2+-) 43...Rg3= 44.Rf3 (better 44.Rf1 Ra3 45.Qg1=) 44...Rg6?? (better 44...Rf3!? 45.gf3 Qa1 46.Kg2 Qa3-/+) 45.Rf2 (better 45.Qg1!?+/-) 45...Ra6 46.Rf3 Rg6 47.Qg1 Ra6 (47...a6 48.Kh2+/-) 48.Qf2 (48.Qc5 Rf6+-) 48...Rg6 (48...Qa1 49.Kh2 Ra3 50.Qc2 Rf3 51.Qf5 Kg7 52.Qg4 Kf6 53.Qf3+/- (53.gf3?! Qd4=)) 49.Kh2 h5 (49...Re6 50.Qc2 Rf6 51.Rc3+-) 50.Qc2 h4 (50...Qf6 51.Rd3+-) 51.Qf5 Kh6 52.Qc2 Rg4?? (52...Qd4+-) 53.Qf2 (better 53.hg4 Qg4 54.Rc3 Qf4 55.Kh3+-) 53...Rg3 54.Rg3 hg3 55.Qg3 Qg3 (55...Qf8+-) 56.Kg3 Kg6 57.Kf3 Kf5 58.g4 Kf6 59.h4 White intends g5 59...Kf7 60.f5 a6 61.Kf4 Kg7 62.g5 (62.g5 Kf8 63.h5+-) 1-0. FeegLood (2580) - honorarycitizen (1780), Time forfeit, lichess.org, 2015.

5.Nh3 Bh3!? 6.gh3 Nbd7=+.

5.c3 0-0 6.c4 (6.d4 Nc6=+) 6...a5 7.Nc3 ab4 8.ab4 Ra1 9.Qa1 Nc6 10.b5 Nb4 11.Qc1 (11.Qa4 d5=+) 11...c6 (11...Bf5 12.Nf3–/+) 12.Ba3 d5 13.bc6 bc6 14.Nf3 e4 15.Nd4 Bd7 16.Be2 (16.cd5 cd5 17.Be2 Qa8=+) 16...Qa5 (16...dc4 17.Bb4 Bb4 18.Bc4–/+) 17.Bb2 Rb8 18.0-0=+ h6 19.cd5 cd5 20.Qa1 Qa1–/+ 21.Ra1 Nc2 22.Nc2 Rb2 23.Bd1 Be6 24.Kf1 Bd6 25.g3 Be5 26.Ra8 Kh7 27.Ke1 Bc3 28.dc3 Rb1 29.Kd2 Bg4 30.Bg4 Ng4 31.Rd8 Nf2 32.Nd4 Rb2–+ 33.Ke1 Nd3 34.Kf1 Rf2 35.Kg1–/+ Rd2 36.Rd5=+ Ne1 37.Kf1 Nf3 38.Nf3? Rd5–+ 39.Nd4 Ra5 40.Ne2 Ra2 41.Kf2 Rc2 42.c4 Rb2 43.c5 Rc2 44.c6 Rc6 45.Nd4 Rf6 46.Kg2 h5 47.Ne2 h4 48.Nf4 Rf4 49.gf4 (49...g5 50.fg5–+) –+. Rio (2310) – Dreev (2325), ICC, 2002.

5.Nc3 a6 6.Nf3 Nc6 (6...e4 7.Nd4+=) 7.d4 e4 8.d5 ef3 9.dc6 bc6 (9...fg2 10.Bg2 b6 11.Qd2=) 10.Qf3 Bb7 (10...d5!?=) 11.Bd3+= Rb8 (11...d5!?+=) 12.Ba6!+/- d5 (12...Ba6 13.Qc6 Double attack (13.Qc6 Decoy)) 13.Bb7 Rb7 14.0-0-0 (14.e4 0-0+/-) 14...0-0 (14...Qb8 15.e4 d4 16.Na4+/-) 15.e4 Qb8 16.ed5 c5 (16...cd5!? 17.Nd5 Nd5 18.Qd5 c5+/-) 17.b5+- Qa7 (17...Ne8 18.Rde1 Bf6 19.a4+-) 18.Rhe1 (18.Rde1 Bd6+-) 18...Bd6 19.a4 Qa5 20.Ne4 (better is 20.Rd2+-) 20...Be7?? (better is 20...Ne4 21.Re4 f5+-) 21.d6 cd6 22.Nf6 Bf6 23.Qb7 Bb2 24.Kb2 Qb4 25.Kc1 c4 (25...Qa3 26.Kd2 Qa4 27.Re4 Qa5 28.Ke2+-) 26.Qc6 c3 27.Rd6 g6 28.b6 Qb2 29.Kd1 Qb1 30.Ke2 Qc2 31.Kf1 Qb2 32.a5 c2 33.a6 Kg7 34.b7 Qb1 35.a7 Re8 36.Qe8 c1Q 37.b8Q Qc4 38.Kg1 (38.Kg1 Qb8 39.ab8Q Kh6 40.Qe3 Kh5 41.Rg6 Qf1 42.Kf1 fg6 43.Qbe5 Kg4 44.Q3d4#) 1–0. Ventimiglia,Charles (1750) – Waldrip,Charles (1820), IECC, 1998.

5.Nc3 Nbd7 6.Be2 a5 7.b5 0-0 8.Nf3 d5 9.0-0=+.

5.c4 a5 6.b5 Nbd7 7.d4 0-0 8.Nf3 ed4 9.Bd4 Nc5 10.Nbd2 Re8 11.Be2 Bf5 12.0-0 Nfd7 13.Ne1 Bf6 14.Bg4 Be6 15.Be6 Ne6 16.Nc2 Bd4 17.Nd4 Qh4 18.N2f3 Qf6 19.Qc2 Nec5 20.Qf5 Qf5 21.Nf5 Nb6 22.Rac1 a4 23.Rfd1 Re4 24.N5d4 Rae8 25.Kf1 h6 26.h3 Kf8 27.Nd2 R4e5 28.Ke2 Rg5 29.g4 Rge5 30.h4 Nbd7 31.h5 Rg5 32.Rg1 Nf6 33.f3 Rge5 34.Rc3 Ncd7 35.Rb1 Nb6 36.e4 Rc5 37.Kd3 Nbd7 38.Rcc1 Ne5 39.Ke3 Nfd7 40.Nf5 Re6 41.Kd4 Kg8 42.Ne3 Nb6 43.f4 Ned7 44.Nd5 g5 45.hg6 fg6 46.Rh1 Nd5 47.ed5 Re2 48.Rbd1 Rg2 49.Ne4 Rg4 50.Rh6 Rf4 51.Rg6 Kf7 52.Rdg1 Rc4 53.Kc4 Ne5 54.Kd4 Ng6 55.Ke3 Rh4 56.Rc1 b6 57.Rc7 Ne7 58.Nd6 Kf8 59.Kd3 Nd5 60.Rf7 Kg8 61.Rd7 Rh1 62.Ne4 Rd1 63.Kc4 Ne3 64.Kb4 Rf1 65.Rd3 Ng4 66.Ng5 Rf4 67.Kc3 Rf5 68.Ne4 Rb5 69.Kc4 Re5 70.Nd6 Ne3 ½–½. OrangoTango – narfblorch (2380), 2003.

5.c4 a5 6.Nc3 ab4 (6...0-0 7.b5=+) 7.ab4 Ra1 8.Ba1 Bf5 9.Qb3 0-0 10.Nf3 Na6 (10...Nbd7 11.Be2=) 11.d4 (11.Be2 c5 12.b5 Nb4=+) 11...c6 (11...e4 12.Nd2=+) 12.Be2 (12.de5 de5 13.c5 Qc7=) 12...e4 13.Nd2 d5 14.c5 (14.b5 Nb4=) 14...b5=+ 15.0-0 Qd7 16.Bb2 Ra8 17.Ra1 (17.h3 Nc7=+) 17...Qb7 (17...Bg4 18.f3 ef3 19.Bf3=+) 18.h3 (18.Ra3 Bg4=) 18...Nc7 (18...Qd7 19.Nf1=) 19.Ra8 Qa8 20.Bd1 h5 (20...Qb7 21.Be2=) 21.Ne2 (21.Be2 Qd8=) 21...Ne6 (21...Qc8 22.Nf4 h4 23.Bc3=) 22.Ng3 Bg6 23.Ne2 h4 24.Qa3 (24.Nc3 Qb7=) 24...Qa3=+ 25.Ba3 Kf8 26.Bc1 (26.Nc3 Bd8=+) 26...Bf5 (26...Bh5 27.Kf1=+) 27.Kh2 (27.Nc3 Bd8=+) 27...Ke8 (27...Bd8 28.Nc3=+) 28.g4 Bh7 29.Kg2 Kd7 (29...Bd8 30.f3=+) 30.f3 (30.Nc3 Kd8=+) 30...ef3 31.Nf3 Be4 (31...Ke8 32.Bb2=+) 32.Nc3= Bf3 33.Bf3 Ng5 34.Bd2 Nfe4 35.Be1 (35.Ne4 Ne4 (worse 35...de4 36.Be2=) 36.Be1 Ke6=+) 35...Nc3 36.Bc3 Nf3 37.Kf3 Ke6 38.Be1 f5 39.Bf2 Bd8 40.Bg1 Bg5 41.Bf2 ½–½. Buczinski,Henryk (2165) – Dehaybe,Andre (2120), ZH–2012–0-00764, 2012.

5.c4 a5 6.Nf3 ab4 7.ab4 Ra1 8.Ba1 0-0 9.Nc3 Bf5 (9...Re8 10.b5=+) 10.Be2= Nc6 11.b5 Nb4 12.0-0 c5 (12...Qd7 13.d3=) 13.d3 Qa5 (13...Qc7 14.e4 Be6 15.Ng5=) 14.Bb2 Ra8 15.e4 (15.Qd2 Qc7=) 15...Be6 (15...Bg4 16.Ne1 Na2 17.Nd5 Nd5 18.Bg4+=) 16.Qb3 (16.Qd2 Bd7=) 16...Qc7 17.Ba3 Nh5 (17...Qa5 18.Ra1=) 18.g3 (18.Bb4 cb4 19.Qb4 Nf4+=) 18...Nf6 (18...Qa5 19.Ra1=) 19.Bb4 cb4 20.Qb4 d5 21.Qb2 dc4 (21...d4 22.Nd5 Nd5 23.ed5+=) 22.dc4 Bc4 23.Bc4 Qc4 24.Ne5 Qc5 25.Nd3 Qd4 26.Rd1 ½–½. Fournier,Frederic (2385) – Parsom (2555), chess.com (team), 2009.

5.c4 a6 6.d3 Nc6 (6...a5 7.Nf3=+) 7.Nc3= Be6 8.Nf3 h6 (8...0-0 9.Be2=) 9.Be2 0-0 10.0-0 Nh7 (better 10...Qd7!?=) 11.d4+- ed4 12.ed4 Bd7 13.d5 Ne5 14.Ne5 de5 15.Bd3 f6 (15...Nf6!?+-) 16.c5+- Ng5 (16...f5!?+-) 17.Bc4 Nf7? (17...Bb5 18.Nb5 ab5 19.Bb5 b6 20.cb6 cb6+-) 18.d6 cd6 19.cd6 Bd6 20.Qd6 Kh8 (20...Rc8 21.Bb3+-) 21.Qd3 Rc8 22.Bb3 Bc6 23.Qe2 Nd6 24.Rfd1 Qe7 25.Nd5 Bd5 (25...Qf7 26.Rac1+-) 26.Rd5 Nb5 (26...Rfe8 27.Rad1 Rc6 28.Qg4+-) 27.Rad1 Qc7 (27...Rfd8+-) 28.Rd7 Qb8 (28...Nd4 29.R1d4 ed4 30.Rc7 Rc7+-) 29.Rg7! Kg7 (29...Kg7 30.Rd7 Mate attack) 30.Rd7 Kh8 (30...Rf7 31.Rf7 Kh8 32.Qe3 Rc1 33.Bc1 Nd4 34.Qh6 Kg8 35.Qh7) 31.Qe3 (31.Qe3 Rc1 32.Qc1 Rf7 33.Qh6 Kg8 34.Bf7) 1–0. Pierre – Ordmasca, internet, 2020.

5.c4 a6 6.Nf3 h6 7.Be2 c5 (7...e4 8.Nd4=) 8.0-0 (8.bc5 e4 9.cd6 ef3 10.de7 Qb6 11.Qa4 Bd7=) 8...cb4 9.ab4 Nc6 10.b5 Nb4 (10...Nb8 11.Nc3+=) 11.Qb3 a5 12.Bc3 0-0?? (better is 12...Bf5+/-) 13.Bb4+- d5 (13...Bg4 14.Bc3+-) 14.Ba5! (14.Ne5?! Bb4 15.d4 Bd6+/-) 14...Qd7?? (14...Ra5 15.Qc3 Double attack (15.Qc3 Decoy)) 15.Bc3 (better is 15.Ne5!? Qf5 16.d4 b6+-) 15...Ra1 16.Ba1 dc4 (16...e4 17.Ne5 Qd6 18.d4+-) 17.Bc4 Ne4 18.d3 Nc5 19.Qb2 Qg4 20.Qe5 Bf6 21.Qc5 Ba1 22.Nbd2 Bf6 23.d4 Be6 24.Be6 fe6 25.Rc1 Ra8 26.Ne5 Be5 27.Qe5 Qe2 28.Nf3 Ra2 29.Qe6 Kh8 30.Rc8 Kh7 31.Qf5 g6 32.Qf7 1–0. Fournier,Frederic (1935) – maqroll3(C) (1805), Active (2/0), 2005.

5.c4 c6 6.Nc3 0-0 7.Nf3 h6 8.Be2= Nh7 (8...a5!?=) 9.d4+= ed4 10.Nd4 Nd7 11.0-0 Ne5 12.Qc2 Bh4 (12...Re8 13.Rad1+=) 13.Rad1+/- Qf6 (better 13...Qe7!?+/-) 14.g3+- Bg3 (14...Bh3 15.Rfe1+-) 15.hg3 Qe7 16.Nf5 Bf5 17.Qf5 g6 (17...Nf6 18.Rd2 Rfe8 19.Rfd1+-) 18.Qf4 Ng5 19.Kg2 a6 (19...f6 20.Qh4 Ngf7 21.f4+-) 20.Qh4 h5 (20...Qe6 21.f4 Nc4 22.Bc4 Qc4 23.Qh6+-) 21.f4 Ng4 (21...f6 22.fe5 de5 23.Ne4 Ne4 24.Qe4+-) 22.Bg4 Qe3 (22...f6 23.fg5 fg5 24.Qh2+-) 23.Rfe1 Qb6 24.Qg5 (24.Qg5 Qd8 25.Qh6+-) 1-0. Pereira – Gatteres, internet, 2021.

5.c4 c6 6.Nf3 (6.d4 e4=+) 6...Bg4 (6...0-0 7.Nc3=+) 7.Qc2 (7.Be2 e4 8.Nd4 Be2 9.Qe2 a5=) 7...Qc7 (7...a5 8.d4 e4 9.Nfd2=) 8.Bd3 (8.d4 Nbd7=) 8...Nbd7 9.Nc3 a6 (9...a5 10.Bf5=+) 10.Bf5 (10.h3 Bf3 11.gf3 0-0=) 10...0-0 (10...Bf3 11.gf3 g6 12.Bh3=) 11.Bg4 Ng4 12.h3 (12.0-0 f5=) 12...Ngf6 13.0-0 b6 (13...d5 14.cd5 cd5 15.Rac1=) 14.Rac1 Rfc8 15.Qb1 (15.d4 c5 16.bc5 bc5 17.de5 de5+=) 15...Qb7 16.d4 (16.Qf5 b5=) 16...Bf8 (16...c5 17.Ng5=) 17.de5 (17.Qd3 c5 18.Ng5 cb4 19.ab4 a5=) 17...de5 18.Ne4 (18.Rfd1 c5 19.Nd5 Nd5 20.cd5 cb4 21.ab4 Rc1 22.Qc1 Rc8+=) 18...Ne4= 19.Qe4 Can e5 get defended? 19...f6 (19...a5 20.b5 f6 21.Rfd1=) 20.Rfd1+= Rc7 21.Rd2 (21.Bc3 c5 22.Qf5 b5 23.bc5 Nc5=) 21...a5 (21...c5 22.Qd5 Qd5 23.cd5 Rac8=) 22.Rcd1 (22.Bc3!?+=) 22...ab4=+ 23.Qg4 (23.Qf5 ba3 24.Rd7 Rd7 25.Rd7 Qd7 26.Qd7 ab2+-) 23...ba3 24.Ba3 Ra3 (24...Ba3 25.Rd7) 25.Rd7 Ra7?? (better 25...Rd7 26.Rd7 Ra1 27.Kh2 Qb8=+) 26.Qe6+- Kh8 27.Rd8 (better 27.Qe8 Ra8 28.Rc7 Qc7 29.Qa8+-) 27...Rf7+= 28.Re8 (28.R1d6 b5+-) 28...h6?? (better 28...g6+=) 29.Rdd8+- (29.Rdd8 Kh7 30.Rf8 Rf8 31.Rf8+-) 1–0. Staflin,Soren – Svedberg,Hans, Minsk op, 1993.

5.c4 d6 6.d3 0-0 7.Nf3 Bg4 8.Be2 Qd7 9.Nbd2 (9.Be5 de5 10.Ne5 Be2 11.Qe2 Qe6–/+) 9...c6 10.Rc1 a5 11.0-0 ab4 12.ab4 Bf5 13.e4 Bg6 14.c5 Na6 (14...Qc7 15.b5 Nbd7 16.cd6 Bd6 17.Nh4=) 15.Nc4 Qc7 (better 15...Nb4!? 16.Nb6 Qc7 17.Na8 Ra8+-) 16.cd6+- Bd6 17.b5 Nc5 (better 17...Nb8 18.Nfe5 Re8+-) 18.Nd6 (18.Nce5?! Bh5 19.bc6 bc6+-; 18.Nfe5?! Ra2+-) 18...Qd6 19.Be5 (19.Ne5?! Nfd7 20.f4 Ra2+-) 19...Qe7 20.bc6 bc6 21.Bf6 gf6 22.Qc2 Ra5 23.Qc3 Rfa8 24.Nd4 Qe5? (better 24...Qd6 25.Qb4 Ne4 26.Nc6 Qb4 27.Nb4 Rb5+-) 25.Nc6 Qc3 26.Rc3 Na4 (26...Ra2 27.Bf3 Na4 28.Rcc1+-) 27.Rc4 Rc5 28.Rc5 Nc5 29.f4 Ra2 30.Re1 h6 31.f5 Bh7 32.Kf1 1–0. Capaliku,Aleks (2105) – Gentile,Bruno, Udine DLF op, 2007. (=1.a3 e5 2.c4 Nf6 3.e3 Bc5 4.b4 Be7 5.Bb2 d6)

5.c4 e4 6.d4 Bg4 7.Qc2 h5 (better 7...a5!?=) 8.Nc3+= Bf5 9.f3 d5 10.cd5 Nd5 11.Nd5 (11.fe4 Nc3 12.ef5 Nd5+-) 11...Qd5 12.Bc4 (12.Qc7!? Bh4 13.Kd2+-) 12...Qc6+= 13.d5 Qg6 14.f4 0-0 15.Ne2 h4 (15...Qg2?? 16.Rg1 Qg1 17.Ng1 Bh4 18.Kd1+-) 16.g4 (16.Nd4 Rd8+=) 16...Bg4= (16...Qg4?? 17.Rg1 Qg1 18.Ng1+-) 17.Rg1 h3 18.0-0-0 Kh8 19.Rg4 Qg4 20.Rg1 Qf3 21.Bg7 (21.Rg7!? Qe3 22.Kb1 f6 23.Re7 a5 24.Re4 Qf3+-) 21...Kh7 22.Bf8 Bf8 23.Rg3 Qf1 24.Kd2 f5 25.d6! Bg7 (25...cd6 26.Bg8) 26.Be6 Nc6 27.Bf5 Kg8 (27...Kh8 28.Qb3 Rd8+-) 28.Qb2 Ne5 (28...Qd1 29.Kd1 Nd4 30.Qd4 Kf8 31.Qg7 Ke8 32.Qe7) 29.Qe5 (29.Qe5 Qe2 30.Ke2 Kf7 31.Rg7 Kf8 32.Qe7) 1–0. Sarabia,JC – Ruiz,JA, Aviles, 1991.

5.c4 Kf8 6.Nf3 g6 (6...e4!? 7.Nd4 c5=) 7.d4+= ed4 8.Bd4 Kg7 9.Be2 Re8 10.Nbd2 c5 11.bc5 dc5 12.Bc3 Nc6 13.0-0 Qc7 14.Qc2 b6 15.Rfd1 Bb7 16.Ne4 Rad8 17.Nf6 (17.Qb2!? Nd4 A) worse is 18.ed4 Ne4 (worse is 18...Be4 19.d5+/-) 19.Bd2 Nd2 20.Rd2 Bf6–/+; B) 18.Nd4?! Be4 19.Nb5 Qb7+/-; C) 18.Nf6 Ne2 19.Qe2 Bf6 20.Bf6 Kf6 21.Qb2 Kf5 22.Ne1+=) 17...Bf6+= 18.Bf6 Kf6 19.Qc3 Ne5 20.Rd8 Rd8 21.Ne5 (21.Nd2 Ke7+=) 21...Qe5= 22.Qe5 Ke5 23.f3 f5 24.Kf2 a6 25.Rd1 Rd1 26.Bd1 b5 27.cb5 ab5 28.Ke2 Kd5 29.Kd3 c4 30.Kc3 Kc5 31.Bc2 Bd5 32.e4 fe4 33.fe4 Be6 34.h3 g5 35.g4 h6 36.Bd1 Bd7 37.Bf3 Be6 38.Bg2 Bd7 39.Bf3 Be6 40.Bg2 Bd7 41.Bf3 ½–½. Fournier,Frederic (1800) – jvizcar2 (1790), Active blind, 2011.

5.c4 Bg4 6.Be2 Be2 7.Ne2 0-0 8.0-0 Nbd7 9.d4 c6 10.Qc2 Rc8 11.de5 de5 12.Nd2 Qc7 13.Nf3 e4 14.Nfd4 Bd6 15.Ng3 1–0. mgriffin (1815) – rgiarrocco (1890), net–chess.com, 2001.

5.Bc4 d5 6.Bb3 e4 7.d4 (7.Ne2 a5=+) 7...0-0 8.c4 c6 9.Nc3 Bg4 10.Nge2 dc4 (10...a5 11.ba5 Qa5 12.Qc2=+) 11.Bc4 Nbd7 12.Rc1 (12.Qc2 a5 13.ba5 Qa5=) 12...Nb6 13.Ba2 Re8 (13...a5 14.b5=+) 14.Qc2 (14.h3 Bd7=) 14...Nbd5 (14...a5 15.ba5 Ra5 16.Ng3=+) 15.Ng3 (15.Bc4 Bd6=+) 15...Bb4 16.ab4 Nb4 17.Bf7 Kf7 18.Qb3 Nbd5 (18...Nfd5 19.Nce4 a5 20.Ba3=) 19.Qb7= Kg8 20.Nd5 cd5 21.Qa6 (21.Ba3 Qa5 22.Bb4 Qb6 23.Qb6 ab6=+) 21...Re6 22.Qa2 h5 23.h3+= h4 24.Nf1 Bh5 25.Nd2 g5 26.Nb3 Qb6 27.Nc5 Qb5 28.Bc3 Rb6 29.Ba5 Qb2=+ 30.Qb2 Rb2 31.0-0 g4 32.hg4 Ng4 33.Ne6 Ra2 34.Bc7 a5 35.Nf4 Bf7 36.Ra1 Ra1 37.Ra1 a4 38.Ne2 Rc8–/+ 39.Bd6 Rc2 40.Kf1 Be8 41.Be7?? Bb5–+ 42.Re1 h3 43.gh3 Nh2 44.Kg2 Nf3 45.Rb1 Be2 (46.Bc5 Kf7–+; 45...Re2?! 46.Rb5 Kf7 47.Bc5=) 0–1. Sladek,Vaclav – Cesek,L, Olexa mem op, 1996.

5.Bc4 Ne4 6.Qf3 Nf6 7.Ne2 (7.Qd1 0-0=+) 7...0-0 (7...e4 8.Qf4 g5 9.Qg5=+) 8.h3 (8.Nbc3 c6 9.Qg3 e4=) 8...c6 9.Ba2 Be6 10.c4 e4 11.Qf4 Nbd7 12.Nbc3 (12.Ng3 Ne5 13.Be5 de5 14.Qe5 Bd6=+) 12...d5 (12...Ne5 13.Nc1-/+) 13.cd5 Nd5 (better 13...cd5!? 14.Nd4 a5=+) 14.Qe4+= N7f6 (14...N5f6 15.Qd3+=) 15.Qc2 (15.Qd4 a5 16.Nd5 cd5+/-) 15...Qd7 16.0-0 Bd6 (16...Nc3 17.dc3 Ba2 18.Ra2+=) 17.Nd5 Nd5 18.Bb1 g6 19.Nd4 (19.Ba2 a5 20.e4 Nc7+/-) 19...Bc7 (better 19...Bh3!? 20.f3 Be6=) 20.f4+/- Bb6 (20...a5 21.Qd3+/-) 21.Ne6 (21.f5!? Bf5 22.Nf5 (22.Rf5?! gf5 23.Nf5 f6+=) 22...gf5 23.Rf5+- (23.Qf5?! Qf5 24.Rf5 Ne7+-)) 21...fe6+/- 22.Kh1 Rad8 (22...a5 23.e4 Nf6 24.Ba2 ab4 25.ab4+/-) 23.g3 (23.Ba2 a6+/-) 23...Nf6 (23...Be3 24.de3 Ne3 25.Qf2 Nf1 26.Ba2= (26.Qf1? Qd5 27.Kg1 Qd2-+)) 24.Rf2+/- Rf7 25.Ba2 Nd5 26.g4 (26.Qe4 Rdf8+/-) 26...a6 (26...Rdf8 27.Qe4+/-) 27.Raf1 Qe7 (27...Rdf8 28.f5! h6 29.Rg2+-) 28.Bd5 (28.Rf3!?+-) 28...cd5+/- 29.Qc3 d4 30.Qb3 (30.ed4?! Bd4 31.Qd4 Rd4 32.Bd4 Qd8=) 30...de3 31.de3 Qh4 32.Kg2 Rd5 (32...Rd6!?+/-) 33.Qc3+- Kf8 34.Qc8 Bd8 (34...Qd8 35.Qe6 Re7 36.Qf6 Rf7 37.Qh8 Ke7 38.Qd8 Rd8 39.Rc2+-) 35.Qe6 Rdd7 (35...Rd3 36.Bd4 b6 37.f5 gf5 38.Qc4 Rd4 39.Qd4+-) 36.f5 (36.Bd4 Bc7+-) 36...Bc7 37.Be5 (37.fg6 Qg3 38.Kh1 Qh3 39.Kg1 Bh2 40.Kh1 Bg3 41.Kg1 Bf2 42.Rf2 Rd1 43.Rf1 Rdf1) 37...Rde7 (37...Qe7 38.Qe7 Ke7 39.Bc7 Rc7 40.e4+-) 38.Qc8 (better 38.Bd6 Bd6 39.Qd6+-) 38...Re8 39.Qc7 (39.Bg7 Kg7 40.Qe8 Qg3 41.Kh1 Be5 42.f6 Rf6 43.Qd7 Kh6 44.g5 Qg5 45.Rf6 Bf6 46.Qb7 Qe3+-) 39...Rc7+/- 40.fg6 (40.Bc7?! Re3 41.fg6 Kg7 42.gh7 Qh3 43.Kg1 Kh8= (43...Kh7?? 44.Rh2+-)) 40...Kg8 41.Bc7 hg6 (41...Re3 42.gh7 Kh7 43.Rf3 Re2 44.R1f2 Rf2 45.Rf2+/-) 42.Bf4 (42.Bb6!?+-) 42...Qd8+/- 43.Bh6 (43.g5 Qd3 44.Ra1 Re3 45.Be3 Qe3+=) 43...Kh7 44.g5 Qd5 45.Kg1 Qe6 (45...Re7 46.Rf3+=) 46.Rf7 Kh8 (46...Kg8 47.R7f3+=) 47.Bg7 (47.R1f3 Qd5+/-) 47...Kg8+= 48.Bd4 (48.Rb7?? Qe3 49.Kh2 Qd2 50.Kg1 Qg5 51.Kh1 Qd5 52.Kg1 Qb7-+) 48...Qh3?? The isolani on e3 becomes a target (better 48...Qf7 49.Rf7 Kf7=) 49.Rg7 Kh8 50.Re7 Kg8 51.Re8 Kh7 52.Rh8 1-0. kaalmakreel (2155) - husenbe (2125), ChessWorld.net, 2019.

5.Bc4 Bg4 6.Ne2 Be6 (6...d5 7.Bb3 Qd6 8.f3=) 7.Be6= fe6 8.f4 Qd7 (8...ef4 9.ef4 Qd7 10.Nd4=) 9.fe5+= de5 10.Be5 Nc6 11.Bb2 0-0-0 12.Nbc3 Ng4 (12...Rhf8 13.Qc1+=) 13.Ng3 Nge5 14.0-0 (14.Nce4 Bd6+/-) 14...Rdf8 (better 14...Qd2 15.Qd2 Rd2=) 15.Qe2+/- Bd6 16.Nge4 Nf7 17.Nb5 Bh2? (better 17...Rhg8+-) 18.Kh2 e5 (18...Rhg8 19.Nc5 Qe7 20.Nd4 Nd4 21.ed4+-) 19.Kg1 (19.Nc5!? Qd8 20.Qg4 Kb8 21.Nd7 Ka8 22.Nf8 Rf8 23.Qg7 Kb8 24.Rf7 Rf7 25.Qf7 a6+-) 19...a6 (19...Nh6+-) 20.Nc5 Qd5 (20...Qd8 21.Qg4 Kb8 22.Nd7 Ka8 23.Nf8 Rf8 24.Qg7 ab5+-) 21.Qg4 Kb8 22.Nd7 Ka8 23.Nc7 Ka7 24.Nd5 Nh6 25.Qc4 Rf1 26.Rf1 b6 (26...Rb8 27.Nb8 a5 28.Nc6 bc6 29.Qc5 Kb7 30.Qb6 Kc8 31.Qc7) 27.Qc6 Rb8 28.Nb8 Kb8 29.Qb6 Kc8 30.Qc7 1-0. FeegLood (2795) - MeikeSchlecker (2505), lichess.org, 2016.

5.d3 0-0 6.c4 a5 7.b5 c6 8.bc6 bc6 9.Nc3 Bg4 10.Be2 Be2 11.Nge2 Nbd7 12.0-0 Nc5 Black prepares e4 (12...d5 13.cd5 cd5 14.Rb1=) 13.Ng3 e4 (13...e4 14.Nce4 Nfe4 15.de4 Re8+/-). opperwezen (2790) - Jasugi99 (2715), lichess.org, 2019. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6 4.e3 Be7)

5.d3 0-0 6.Nd2 Nc6 7.Ngf3 Be6 8.c4 h6 9.Be2 Qd7 10.Qc2 Kh8 11.0-0 Rg8 12.Rfe1 Raf8 (12...Rge8 13.b5 Nd8 14.d4 ed4 15.Nd4+=) 13.Bf1 (13.d4 ed4 14.ed4 d5+/-) 13...Ng4 14.Rad1 Bg5? (14...a6 15.d4 ed4 16.ed4+/-) 15.Ne4 (15.h3 Nf6 16.h4 Bh4 17.Nh4 Bg4+-) 15...Bf5? (15...Be7!?+/-) 16.Neg5 (16.h3 Nf6 17.h4 Be4 18.de4 Bh4 19.Nh4 Qg4+-) 16...hg5 17.Ng5 Qe7 18.Nf3 Qh4?? (better 18...e4 19.Nd4 Qh4+-) 19.b5 (19.Nh4 Bh7+-) 19...Nd8 (19...Qf2 20.Qf2 Nf2 21.Kf2 Ne7+-) 20.c5 (20.Nh4 Bh7+-) 20...dc5?? (20...Qh5+-) 21.Qc5 (better 21.Nh4 Be6 22.h3+-) 21…Ne6 1-0. opperwezen (2655) - JannLee (2590), lichess.org, 2018.

5.d3 0-0 6.Be2 Nbd7 7.Nf3 c6 8.Nbd2 Qc7 9.c4 b6 10.0-0 Bb7 11.Rc1 Rad8 12.Qc2 Rfe8 13.d4 Bf8 (13...a5 14.ba5 ba5 15.Bd3=) 14.b5 Qb8 15.bc6 Bc6 16.d5 Bb7 17.a4 (17.Ng5 Rc8 18.Qf5 Qc7+=) 17...Rc8= 18.Ba3 (better is 18.Bc3!?=) 18...Bd5!–/+ 19.Qa2 (19.cd5 Rc2) 19...Ba8 20.Rfd1 Nc5 (20...Qc7 21.Qc2–/+) 21.a5 Nfd7 (21...ba5 22.Rb1 Qc7 23.Qc2–/+) 22.ab6 ab6 23.Nf1 Bc6 24.Qb1 Qa7 25.Ng5 g6 26.Bc5 Nc5 27.Ng3 Qb7 28.Bf3 e4 29.Be2 Rcd8 30.Nh3 d5 31.cd5 Bd5 32.Nf4 Bc6 33.Bc4 b5 34.Be2 b4 35.Bc4 b3 36.Rd8 Rd8 37.Bb3?? (better is 37.Rd1 Rd1 38.Qd1–+) 37...Qb3 (37...Nb3?! 38.Rc6 Qc6 39.Qb3 Qc1 40.Nf1–+) 38.Qb3 Nb3 39.Rc6 Rd1 40.Nf1 Nd2 (40...Nd2 41.g4 Nf1–+) 0–1. Read,Matthew – Acey,Gerald (2005), BCF–chT4, 2004.

5.d3 Bg4 6.Nf3 d5 (6...0-0 7.Be2+=) 7.Be2 e4 8.de4 de4 9.Nd4 Be2 10.Qe2 Nc6 (10...0-0!?=) 11.Nc6+/- bc6 12.c4 0-0 13.Nc3 c5 14.b5 a6 15.a4 ab5 16.ab5 Ra1 17.Ba1 Qa8 18.0-0 Rd8 19.Rd1 Rd1 20.Qd1 Qd8 21.Qd8 Bd8 22.Nd5 Nd5 23.cd5 Kf8 24.Be5 Ke7 25.f3 (25.Bg7?! Kd6+=) 25...f6 26.Bc3 ef3 27.gf3 Kd6 28.e4 f5 29.Kf2 Bf6+= 30.Bf6 gf6 31.Ke3 fe4 32.fe4 Ke5 33.h3 h5 34.h4 c4–/+ 35.d6? cd6?? 36.Kf3 d5–+ 37.ed5?? Kd5 0–1. Fournier,Frederic – Sir_Eebrall (1730), Partie amicale, 1m + 0s, 2007.

5.Bd3 0-0 6.Nc3 d5 7.Nge2 e4 8.Bb5 a5 9.ba5 c6 10.Ba4 Qa5 11.0-0 Bd6 12.Bb3 Bg4 13.h3 Bh5 14.g4 Bg6 15.Nf4 Na6 16.Ng6 hg6 17.g5 Nh7 18.Qg4 Nc5 19.f3 ef3 20.Rf3 Qb6 21.Nd5 cd5 22.Qd4 f6 23.Bd5 Kh8 24.gf6 gf6 25.Rb1 Kg7 26.Qb4 Qd8 27.Bd4 Ra4 28.Qb5 Ra5 29.Qc4 Ng5 30.Rff1 Nh3 31.Kg2 Ng5 32.Bc5 Bc5 33.Rb7 Be7 34.e4 Nf7 35.Qc6 Ra3 36.Qe6 Qd6 37.e5 Qe6 38.Be6 Bd8 39.Rd7 Ra4 40.Bf7 Rf7 41.Rd8 fe5 42.Rf7 Kf7 43.Rd3 Rc4 44.Rf3 Ke6 45.c3 g5 46.Kg3 e4 47.Rf8 Ke5 48.Rb8 Kd6 49.Rb5 e3 50.de3 Rc3 51.Kf3 g4 ½–½. Comet B25 – Fritz 6, 2003.

5.d4 0-0 6.Nd2 c5 7.c3 Qc7 8.Bd3 ed4 9.ed4 Re8 10.Ne2 b6 11.0-0= d5 12.dc5 bc5 13.Nf3 Nbd7 14.h3 Bb7 15.Rc1 Rad8 16.Ng3 Bd6 17.Nf5 Bf4 18.Rc2 g6 19.N5h4 c4 20.Be2 Bc6 21.Bc4?? dc4–+ 22.Re2 Ne5 23.Qc2 Nd3 24.Re8 Re8 25.Nd4 Ba4! 26.Qb1 Bh2 27.Kh1 Ne4 28.g3 Bg3! (29.fg3 Qg3–+) 0–1. Bull_Dog_Baz – Agove, ChessWorld.net, 2007.

5.d4 0-0 6.de5 de5 7.Qd8 Nc6?? 8.Qd1+- Be6 (8...Bg4 9.Nf3 e4 10.h3+-) 9.Ne2 (9.b5!? Nb8+-) 9...Rad8 10.Nd2 Ne4 11.Ne4 Rd1 12.Rd1 f6 13.N2c3 b6 14.Nc5! bc5 (14...bc5 15.b5 Combination; 14...Bc5 15.bc5 Combination) 15.Nd5 Bd5 16.Rd5 cb4 17.Bc4 Kh8 18.ab4 Nb4 19.Rd2 Bc5 20.0-0 Nc6 21.Rfd1 Bb4 22.c3 Bc5 (22...Bd6 23.Ra1 e4 24.Bd5+-) 23.Bb5 Na5 24.Rd8 Kg8 (24...Rg8 25.Rg8 Kg8 26.Rd8 Kf7 27.Rd7 Kg6 28.Bd3 Kh6 29.Rc7+-) 25.Rf8 Kf8 26.Ba4 (better 26.Rd8 Kf7 27.Rd7 Kg6 28.Bd3 Kh6 29.Rc7 Bb6+-) 26...Nc4 27.Bb3 (better 27.Bc1 Nb6 28.Bc2+-) 27...Nb2 28.Rb1 Nd3 29.Bc4 e4 30.Bd3 ed3 31.Rd1 Bb6 32.Rd3 Ke7 33.Kf1 Ke6 34.Ke2 a5 35.f4 a4 36.Rd2 a3 37.Ra2 Bc5 38.c4 f5 39.Kd3 Kd6 40.g3 c6 41.g4?? (better 41.Kc3+-) 41...Be3?? (better 41...fg4!? 42.Ra1 Ke6+=) 42.gf5 (better 42.Ke3 fg4 43.Ra3+-) 42...Bf4 (42...Bc1 43.Rg2 Bb2+/-) 43.h4?? (43.Ra3 Bg5+-) 43...Be5? (better 43...Bc1 44.Re2 Bb2+=) 44.Ra3+- Bf6 45.Rb3?? (45.h5 h6+-) 45...Kc5? (better 45...Bh4 46.Ke4 Bf6+=) 46.Rb6?? (better 46.h5 Kd6 47.h6 gh6 48.Ke4+-) 46...g6 (46...Kb6 47.Ke4 Kc5-+) 47.Rc6 (better 47.Rb7 gf5 48.Rh7+-) 47...Kc6= 48.Ke4?? (better 48.fg6 hg6 49.h5=) 48...Bh4-+ 49.fg6 (49.fg6 hg6 50.Ke5-+). amirmohamad1381azadi (2260) - volkanyirik (2280), Rated Bullet game, lichess.org, 2016.

5.d4 0-0 6.de5+= de5 7.Qd8 Rd8 8.Be5 c6 (8...c5 9.c3+=) 9.Nf3 Bg4 10.h3 Bh5 11.Nbd2 Nbd7 12.Bd4 Bg6 13.c3 Nb6 (13...c5 14.bc5 Bc5 15.Nh4+/-) 14.Nh4 Nfd5 (14...Be4 15.Rc1+/-) 15.Ng6+- fg6 (The passed pawn on e3 will quickly become a dangerous weapon) 16.c4 Nf6 17.c5 Nbd5 18.Nb3 Ne4 (18...Rd7 19.Rd1+-) 19.Bd3 Nef6 20.Rd1 Kf8 21.g3 Rd7 22.Ke2 Nc7 23.f4 Rad8 24.f5 gf5 25.Bf5 Rd5 26.Rhf1 Nb5 27.Bh7 Nd4 (27...Rh5 28.Bf5+-) 28.Nd4 (< 28.ed4 Rg5 29.Rd3 g6+-) 28...Ke8 (28...Re5+-) 29.Bg6 Kd7 30.e4 Rg5 (30...Re5 31.Nf3 Ke6+-) 31.Nf3 (31...Rd5 32.ed5 Nd5 33.Ne5 Ke6 34.Rde1 Ke5 35.Kd3 Ne3 36.Ke3+-) 1–0. Klaus Behrmann – chessH, ChessWorld.net, 2003.

5.d4 e4 6.d5 0-0 7.Nc3 Nbd7 8.Nge2 (8.Qd4 a5=) 8...Ne5 (8...c6 9.Ng3=) 9.Ng3+= Bg4 (9...Nfd7 10.Nce4 f5 11.Nd2+=) 10.Qd2 Bf3 (10...a5 11.Nce4 c6 12.Nf6 Bf6 13.Rb1+=) 11.h3 (11.b5 Rb8+=) 11...Re8 12.Qc1 Bg2? (better is 12...Bh5+=) 13.Bg2+- Nf3 (13...a5 14.Nge4 Nc4 15.Rg1+-) 14.Bf3 ef3 15.Qd1 Nd7 (15...a5 16.Qf3 ab4 17.ab4 Ra1 18.Ba1+-) 16.Nce4 Ne5 17.Be5 de5 18.Rg1 (18.Qf3 g6+-) 18...Kh8 19.c4 (19.Qf3 Qd5 20.Nf5 Bf6+-) 19...Bh4 (19...g6 20.Nd2+-) 20.Qf3 Qd7 (20...Rf8+-) 21.Nf5 1–0. Trkn – guest2920, ICC, 2004.

5.d4 e4 6.d5 Nbd7 7.Ne2 Nb6 8.Nbc3 a5 9.Ng3+= 0-0 10.Qd4 c5 11.dc6 bc6 12.Nge4 d5 13.Nc5 Bd6 14.b5 Qc7 15.bc6 Qc6 16.Nb3 a4 17.Nd2 Ba6 18.Ba6 Ra6 19.0-0 Re8 20.Rab1 Nbd7 21.Nf3 Ne5 22.Ne5 Be5 23.Qd3 Rb6 24.Ba1 Rbb8 25.Rb8 Rb8 26.Nd5 Rb1?? 27.Ne7+- Kh8 28.Nc6 (28...Rf1 29.Kf1+-) 1–0. Luzuriaga,Norberto Horacio – Vetter,Udo, CiF, 2003.

5.Be2 Bf5 6.Nf3 0-0 7.0-0 Nbd7 8.d3 a5 9.e4 Bg4 10.h3 Bf3 11.Bf3 ab4 12.ab4 Ra1 13.Ba1 c6 14.c4 d5 15.ed5 cd5 16.Bc3 Qb6 ½–½. Klaus Behrmann (2100) – Baron_vonMuenchhausen (2045), ChessWorld.net, 2003.

5.Be2 Bf5 6.Nf3 Nbd7 7.0-0 Nb6 8.a4 a5 9.b5 e4 10.Nd4 Qd7 11.Nf5 Qf5 12.d3 d5 13.c4 dc4 14.dc4 Rd8 15.Qc2 Nbd7 16.Nc3 Ne5 17.Rac1 0-0 18.Nb1 Qg5 19.Nd2 Rd2 20.Qd2+/- Nf3 21.Bf3 ef3 22.g3 Qg4 23.Qd1 Rd8 24.Bd4 Qh5 25.Rc3 Ne4 26.Rd3 c5 27.Be5?? Rd3–+ 28.Qd3 Qh3 (29.Qd8 Bd8 30.Bg7 Qg2#; 28...Qe5?! 29.Re1–+) 0–1. Nedergaard,Klaus – Andersen,Finn (2215), Politiken Cup, 2000.

5.Nf3 b6 6.c4 Bb7 7.Nc3 Nbd7 8.Be2 0-0 9.0-0 a5 10.b5 Nc5 11.d4+= Nce4 12.de5+/- de5 13.Ne5 Bd6 14.Ne4 Be4 15.Bf3+- Bf3 16.Qf3 Qc8 17.Nc6 Qe6 18.Bf6+- gf6 19.Rfc1 Kh8 20.Nd4 Qe5 21.g3 Rg8 22.Nf5 Bc5? 23.Nh6 Rg7 24.Qa8 (24…Qe8 25.Qe8 Bf8 26.Qf8 Rg8 27.Qg8) 1–0. Wall,Bill – D538, Microsoft Gaming Zone, 1999.

5.Nf3 b6 6.d3 Bb7 7.c4 Nbd7 8.h3 c5 9.b5 a6 10.ba6 Ra6 11.Nc3 Bc6 12.Be2 0-0 13.0-0 e4 14.de4 Ne4 15.Ne4 Be4 16.Nd2 Bf5 17.Nb1 Nf6 18.Nc3 Ne4 19.Nd5 Bh4 20.Bd3 Qg5? 21.Qc2 Qg6 22.Nf4 Bf2 23.Rf2 Qg3 24.Be4 Be4 25.Qe4 Raa8 26.Nd5 Rae8 27.Ne7 Kh8 28.Rf7! Rf7 29.Ng6! hg6 30.Qe8 Kh7 31.Qf7 Qe3 32.Kh1 Qh6 33.Re1 (33.Re1 d5 34.Re8 g5 35.Rg8 d4 36.Qe8 Qh3 37.gh3 g4 38.Rh8) 1–0. Fournier,Frederic (2545) – Papacharlie4 (2020), Active, 2004.

5.Nf3 b6 6.d3 Bb7 7.Be2 Nbd7 8.Nbd2 0-0 9.0-0 a6 10.c4 b5 11.e4 h6 12.Rc1 c6 (12...c5 13.Qb3=) 13.Nb3 c5 14.bc5 dc5 15.cb5 ab5 16.Qd2 (16.Ne5 Ne5 17.Be5+/-) 16...b4?? (better is 16...Bd6+=) 17.ab4+/- cb4 18.Ra1 (18.Ne5 Ne5 19.Be5 Bd6 20.Bd6 Qd6+/-) 18...Nb6 (better is 18...Bd6=) 19.Ne5 Qd6 20.Nc4?? (better is 20.Rfc1+/-) 20...Nc4+= 21.dc4 Be4 22.Qd6 Bd6 23.Ra8 Ra8 24.Ra1 Re8 25.Bf6 gf6 26.Rc1 Bg2 27.Kg2= Re2 28.c5 Be5 29.c6 Rb2 30.Na5 Bc7+= 31.Nb7 Rd2 32.Nc5 Rd5? 33.Na6+/- Bb6 34.c7 Bc7 35.Nc7 Rd8? 36.Na6 b3 37.Rb1 Rd3 38.Nc5 Rd5 39.Nb3 Rb5 40.Nd2 Rb1 41.Nb1 Kg7 42.h4 h5 43.f4 f5 44.Kf3 Kf6 45.Ke3 Kg6 46.Nc3 f6 47.Kd4 Kf7 48.Kd5 Ke7 49.Nb5 Kd7 50.Nd4 Ke7 51.Nf5 Kf7 52.Ng3 Kg6 53.f5 Kh6 54.Ke6 Kg7 55.Ne4 (55.Ne4 Kh7 56.Nf6 Kh8 57.Nd7 Kg7 58.f6 Kg8 59.f7 Kg7 60.f8Q Kg6 61.Qg8 Kh6 62.Qh8 Kg6 63.Ne5) 1–0. Fournier,Frederic (1985) – Joanragu (1935), Echecs21, 2003.

5.Nf3 c6 6.Bc4 Bg4 7.h3 Bf3 8.Qf3= d5 9.Bb3 e4 10.Qf5 0-0 11.d3 Qd7 12.Qd7= Nbd7 13.0-0 Bd6 14.Nd2 Ne5 15.d4 Ng6= 16.c4 Rac8 17.c5 Bb8 18.Bc2 Nh5 19.g4 Nf6 20.f3 ef3 21.Nf3 Ne4 22.Be4+= de4 23.Nd2 Rce8 24.Rf5 Nh4 25.Rh5 Ng6 26.Rf1 Nh8 27.Nc4 g6= 28.Rh6 f6 29.Nd6 Bd6–/+ 30.cd6 Nf7 31.Rh4 Ng5 32.d5 Nf3 33.Rf3 ef3 34.dc6 bc6 35.Bd4= f5 36.g5 Re4 37.Rh6 f4 38.Kf2?? fe3 39.Be3 Rfe8 40.d7? Rd8 41.Kf3 Rc4 42.Ba7 Rc3 43.Ke4–/+ Rd7 44.Ke5?? Ra7 (45.Rh4 Raa3–+) 0–1. marus2 – miranda, internet, 2001.

5.Nf3 Nc6 6.b5 Na5 7.d4 ed4 8.Nd4 0-0 9.Bd3 a6 10.a4 c5 11.Nf3 d5 12.Nbd2 ab5 13.ab5 Bd7 14.Be2 b6 15.Ne5 Bf5 16.0-0 Qc7 17.Ng4 Ng4 18.Bg4 Qd7 19.Bf5 Qf5 20.h3 Rfd8 21.Qg4 Qf4 22.Qg7 Normal 1-0. FeegLood (2365) - gmnoway (2175), Rated Blitz tournament summer15, lichess.org, 2015.

5.Nf3 Nbd7 6.Bc4 a6 7.0-0 h6 8.d3 0-0 9.Nbd2 Nb6 10.Ba2 Na4 11.Qc1 c5 12.c3 Bd7 13.bc5 Nc5 14.d4 Nd3 15.Qc2 e4 (better is 15...Nb2!? 16.Qb2 e4+=) 16.Ne4+/- Nb2 17.Nf6 (17.Qb2? Ne4 18.Rfb1 Rc8–+) 17...Bf6 18.Qb2 b6 19.Nd2 Rb8 20.Ne4 Be7 21.Bb1 d5 22.Ng3 b5 23.Qc2 g6 24.f3 Rc8 25.e4 b4 26.ab4 Bb4 27.ed5?? (better is 27.Ne2 Bb5 28.Ba2 Be2 29.Qe2 Bc3 30.Rad1 de4 31.fe4 Bd4 32.Kh1+=) 27...Bc3–+ (27...Rc3?! 28.Qb2 Qb6 29.Rd1=) 28.Qa2 Bd4 29.Kh1 Ba1 30.Qa1 Bb5 31.Rd1 Qd6?? 32.Ne4+= Qf4?? 33.Nf6+- Qf6 34.Qf6 Rfd8 35.d6 Rc6 36.Qd8 (36.Qd8 Kg7 37.Bg6+-) 1–0. Frank,Detlev – Gohlisch,Bruno, Pinneberg–ch op, 1998. (=1.a3 e5 2.b4 d6 3.Bb2 Be7 4.e3 Nf6 5.Nf3 Nbd7)

5.Nf3 Be6 6.c4 0-0 7.d3 Nbd7 8.Be2 Re8 9.Nbd2 c6 10.0-0 Bf8 11.e4 a5 12.Qc2 ab4 13.ab4 Qc7 14.Ra8 Ra8 15.Ra1 Ra1 16.Ba1 Qb6 17.Qa4 d5 18.c5 Qc7 19.ed5 cd5 20.Ng5 Nb8 21.Ne6+/- fe6 22.Nf3 Nc6 23.b5 Nd4 24.Nd4 ed4 25.Bd4 e5 26.Be3 d4 27.Bg5 Bc5 28.Qc4 Kf8 29.Bf6 gf6 30.Bf3 Bd6 31.Qc7+/- Bc7 32.Bb7 Ke7 33.Bc6 h6 34.f3 Kd6 35.Kf1 Kc5 36.Ke2 Kb4 37.g4 Kc3 38.h3 Bd8 39.Be8 Bc7 40.h4 Bd8 41.Bg6 Kb4 42.Be8 Kc5 43.Bc6 Be7 44.h5 Bf8 45.Kd2 Be7 46.Kc2 Kb4 47.Kb2 Bd8 48.Kc2 Bb6 49.Be8 Bd8 50.Kd2 Bb6 51.Ke2 Bd8 52.Kf2 Bb6 53.Kg3 Bd8 54.Bc6 Bb6 55.f4+/- Bd8 56.fe5 fe5 57.Kf3 Bb6?? 58.Ke4 Bc7?? 59.Kf5 Bb8 60.g5 (60.g5 hg5 61.h6+-) 1–0. Fournier,Frederic (1685) – jcarloscq (1630), Active, 2007.

5.Nf3 Be6 6.d3 Nc6 7.Nbd2 a6 8.Be2 Na7 9.0-0 Qd7 10.c4 h5 11.Qc2 g5 (better is 11...Nc6!?+=) 12.Ng5+- 0-0-0 13.Ne6 fe6 14.g3 (14.c5!? dc5 15.bc5 Nc6+-) 14...h4+/- 15.Nf3 hg3 16.fg3 Ng4 17.Kg2?? (17.Qd2 Qe8+/-) 17...Rh7 (17...Ne3 18.Kf2 Nc2 19.Rac1–+) 18.Rh1?? (18.Qd2 Rdh8 19.Rh1 Rg8+/-) 18...Nf6 (better is 18...Ne3 19.Kf2 Nc2–+) 19.Ng5 Rh6? (better is 19...Ng4 20.Bg4 Bg5+/-) 20.Nf7+- Rdh8 21.Nh8 Rh8 22.Raf1 Qe8 23.d4 e4 24.Qd1 Qf8 25.Bg4 Ng4 (25...Qg8 26.Bh3 Kb8+-) 26.Rf8 Rf8 27.Qg4 1–0. Fournier,Frederic (1975) – mosso1 (1940), Echecs21 (3/0), 2003.

5.Nf3 Be6 6.d3 Nbd7 7.Be2 h6 8.Nbd2 0-0 9.0-0 c6 10.c4 d5 (10...Qb6 11.Qc2=) 11.cd5 cd5 (11...Nd5 12.Ne5 Ne5 13.Be5 a5+=) 12.Qc2 (12.Ne5 a5 13.b5 Rc8+/-) 12...e4 (better is 12...Bd6=) 13.de4+/- de4 14.Nd4 (14.Ne4 Rc8 15.Qb1 Bd5+/-) 14...Nb6 (better is 14...Bd5!?+=) 15.Ne6 fe6 16.g3 (better is 16.Ne4 Rc8 17.Qb1+/-) 16...Qd3?? (better is 16...Rc8 17.Nc4 Qd5=) 17.Bd3+- ed3 18.Qc4 (better is 18.Qb3+-) 18...Nc4–/+ 19.Nc4 Rac8 20.Rac1 Rc4?? 21.Rc4+- b5 22.Rcc1 Nd5? 23.Rcd1 d2 24.f3?? Bf6?? 25.Bf6+- gf6 26.Rf2 Rd8? 27.Rfd2 Kf7 28.Kf2 Ke7 29.e4 Nb4 30.Rd8 (30.Rd8 Nd5 31.Ra8+-) 1–0. Fournier,Frederic (1955) – cptnNEMO (1810), Active, 2007.

5.Nf3 Kf8 6.c4 Kg8 7.d4 Nc6 (better is 7...e4 8.Nfd2 a5=) 8.de5+/- de5 9.Qd8 (9.Be5?! Qd1 10.Kd1 Ne4+=) 9...Bd8 10.Ne5 Ne5 11.Be5 c6 12.Be2 Ne4 13.f3 Ng5 14.Kf2 Bf6 (14...Be7+-) 15.Bf6 gf6 16.Nc3 Kg7 17.Rhd1 Re8 18.Bd3 Be6?! (18...a5 19.b5+-) 19.c5 (19.h4 Rad8+-) 19...b6? (19...Bb3 20.Rd2 a5+-) 20.cb6 (20.h4!? Bb3 21.Rd2 bc5 22.hg5 fg5 23.bc5 Rad8+-) 20...ab6 21.Ne4 (better is 21.h4!? Bb3 22.Rdb1 Rad8+-) 21...Ne4 22.Be4 (22.fe4?! Rec8+/-) 22...Rac8 23.Rac1 Bb3 24.Rd3 Ba4 25.Rdc3 Re6 26.Bf5 Rd6 27.Bc8 Rd2 28.Kg3 c5 29.bc5 bc5 30.Rc5 Bd7 31.Bd7 (31.Bd7 Rd7 32.a4+-) 1–0. Fournier,Frederic (1785) – calvo209, Active, 2011.

5.Nh3 0-0 6.f4 (6.Ng5 h6 7.Nf3 e4=+) 6...Bh3-/+ 7.gh3 ef4 8.ef4 Ne4 9.Qf3? (better 9.Bd3 Bh4 10.Kf1-/+) 9...Bh4-+ 10.Ke2 Re8 11.Rg1 (11.Qg2 Bf6 12.d4 Ng3 13.Kd2 Nh1 14.Qh1-+) 11...Nc3 (better 11...Nf2 12.Qe3 Re3 13.de3 Bf6-+) 12.Kd3+- Nb1? (better 12...Qf6 13.Bg2 Nc6 14.Bc3 Qf5 15.Kc4 Na5 16.ba5 Qc5 17.Kb3 Qg1+-) 13.Rg7 Kf8 14.Qh5 (14.Rh7 Qd7 15.Qh5+- (15.Rh4?? Qf5 16.Kd4 c5 17.Kc4 Nd2 18.Kc3 Nf3 19.Rh8 Ke7 20.Re8 Ke8-+)) 14...Re7 (14...Qe7 15.Qh7 Qe4 16.Qe4 Re4 17.Ke4 Nd2 18.Kd3 Nf1 19.Rf1 Bd8+-) 15.Qh7 (15.Qh4?! Re3 16.de3 Qh4 17.Rb1 a5=; 15.Rb1 f6 16.Re7 Qe7 17.Qh4 Nd7+-; worse 15.Rh7 Ke8 16.Rh8 Kd7 17.Rd8 Kd8 18.Qh4 Kd7 19.Rb1 a5+-) 15...Ke8 16.Rb1 (better 16.Rg8 Kd7 17.Rd8 Kd8 18.Qh4 Kd7 19.Rb1 c6+-) 16...Kd7 17.Qh4 (17.Qf5 Kc6 18.b5 Kb6 19.Bd4 Ka5 20.Bc3 Kb6 21.a4+-) 17...Nc6?? (better 17...Re3 18.de3 Qh4 19.Rf7 Kc8+-) 18.Qg4 f5 19.Qf5 Ke8 20.Rg8 1-0. FeegLood (2810) - singapu85 (2665), lichess.org, 2017.

6.Nge2 c6 7.Ng3 a5 8.Be2=+.

6.Nge2 c6 7.Ng3 b6 8.Be2= Be6 9.0-0 Nbd7 (9...d5 10.f4 ef4 11.ef4=) 10.f4+= ef4 11.ef4 Nd5?? (better 11...b5+=) 12.Nd5+- Bd5 13.c4 Be6 14.f5 1–0. Pierre – Maldiga, internet, 2019.

6.Nge2 c6 7.Ng3 d5 8.Bd3 e4 (8...b5 9.a4=+) 9.Be2= Nbd7 (9...b5 10.a4=) 10.0-0 Re8 11.d3 ed3 12.cd3 Ne5 13.Nce4 Ned7 14.Ng5 h6 15.Nf3 Bf8 16.Qc2 a5 17.Bc3 ab4 18.ab4 Ra1 19.Ra1 Qc7 20.h3 Nb6 (20...g6!?+=) 21.Bf6+- gf6 22.Nh5 Be7 23.Qc3 Nd7 24.d4 Qd6 25.b5 c5 26.Nh4 Nb6 (26...cd4!? 27.Qd4 Nb6+-) 27.Qc5+- Qc5 (27...Qe6 28.Qc2+-) 28.dc5 Nd7 (28...Nc4 29.c6 bc6 30.bc6+-) 29.c6 bc6 30.bc6 Ne5 31.c7 Rf8 (31...Be6 32.Rb1 Rc8 33.Rb8+-) 32.Nf4 Be6 (32...Bd6 33.Nd5 Ng6 34.Nf6 Kh8 35.Ng6 fg6 36.Nd5+-) 33.Ne6 fe6 34.Rc1 Nc4 (34...Rc8 35.Ba6 Re8+-) 35.Ng6 Nb6 36.Ne7 Kf7 37.c8N (37.c8N Nc8 38.Nc8+-) 1–0. Janek – Lqq6g, internet, 2019.

6.Nf3 a5 7.b5 b6 8.h4 (8.Be2 c6=) 8...Bb7 9.a4 Nbd7 10.d3 d5 11.h5 e4 (11...Bb4 12.Ke2 h6-/+) 12.d4?? (better 12.Nd4=) 12...ef3-+ 13.gf3 (13.Qf3 Bb4 14.Bd3 Ne4 15.Be4 de4-+) 13...h6 14.Bd3 Re8 15.Qd2 Bb4 16.0-0-0 c5 17.Rdg1 cd4 (better 17...Qc7 18.Bf5 Rac8-+) 18.ed4 Kh8 (18...Rc8 19.Rg7 Kg7 20.Rg1 Kf8 21.Qh6 Ke7 22.Re1 Ne4 23.fe4 Qc7 (23...Bc3?? 24.ed5 Ne5 25.Re5 Kd7 26.Bf5 Re6 27.de6 Kc7 28.Bc3 fe6 29.Re6+-) 24.Qg5 f6 25.ed5 Kd8 26.Re8 Ke8 27.Qg8 Nf8-/+) 19.Rg7-/+ Kg7 20.Rg1 Kf8 21.Qh6 Ke7 22.Re1 (better 22.Qe3 Ne5 23.de5=+) 22...Kd6 (better 22...Ne5! 23.de5 Kd7-/+) 23.Qf4= Ne5 24.de5 Kd7 25.Bf5 Kc7 26.ef6 Bd6 27.Qd2 Re1 28.Qe1 Qh8 29.Bg4 Re8 30.Qd2 Rd8 (30...Bb4!?+/-) 31.Kb1 (31.Nd5? Bd5 32.Bd4 Qf8-+) 31...Kb8 32.Nd5 Bd5 (32...Bc5!? 33.Be5 Ka7+/-) 33.Qd5+- Bc5?? (33...Qf8 34.Qc6 Bc7 35.f4+-) 34.Qc6 (better 34.Be5 Rd6 35.Bd6 Bd6 36.Qd6 Kb7 37.Qc6 Ka7 38.Qc7 Ka8 39.Bd7 Qb8 40.Bc6 Qb7 41.Qb7) 34...Qe8 35.h6 (better 35.Qe4!?+-) 35...Qc6+/- 36.bc6 Bf2?? (better 36...Kc7+/-) 37.Be5+- Ka7 38.c7 Rh8 39.c8Q Rc8 40.Bc8 Bd4 41.Bd4 (41.Bd4 Kb8 42.Bf5 Kb7 43.h7 Kc7 44.h8Q Kc6 45.Qa8 Kd6 46.Qd8 Kc6 47.Be4) 1-0. TwelveTeen (2580) - littleplotkin (2580), lichess.org, 2018.

6.Nf3 a6 7.h4 (7.Bd3 Nc6=+) 7...Nc6 8.h5 Bg4 9.h6 gh6 (9...e4 10.hg7 Re8 11.Bc4-/+) 10.Rh6?? (better 10.Be2+=) 10...e4-/+ 11.Ne5?? (better 11.Be2 Kg7 12.Rh4 ef3 13.Bf3-/+) 11...Nd7 (11...Bd1 12.Nc6 bc6 13.Nd1-+) 12.Ng6 (better 12.Qg4 Bg5 13.Nd7+-) 12...Nde5 (better 12...Bd1 13.Ne7 Qe7 14.Rd1 Nf6-+) 13.Qg4 (13.Qg4 Ng4 14.Ne7 Ne7 15.Rh3-+). opperwezen (2670) - JKtheBullfrog (2515), lichess.org, 2018.

6.Nf3 a6 7.h4 (7.Bd3 Nc6=+) 7...Be6 8.d4 ed4 (8...e4 9.Ng5 Bf5 10.d5=+) 9.Nd4= Nc6 10.Nc6 bc6 11.Ne4?? (11.h5 h6=) 11...d5 (better 11...Ne4 12.Bd3 f5-+) 12.Bf6= gf6. opperwezen (2710) - JKtheBullfrog (2485), lichess.org, 2018.

6.Nf3 a6 7.h4 (7.e4 Nc6=) 7...Bg4 8.Be2 Nc6 9.d4 ed4 10.Nd4 Nd4 11.Qd4 Be2 12.Ne2 Ng4?? (12...d5 13.c4=) 13.0-0-0 (13.Qg7) 13...Nf2?? (better 13...Nf6=) 14.Qg4 (14.Qg4 Ng4 15.Rh3-+; 14.Qg7) 1-0. opperwezen (2660) - JKtheBullfrog (2525), lichess.org, 2018.

6.Nf3 Be6 7.Rg1 Nc6 8.h3 e4 (8...a6 9.d4 ed4 10.Nd4 Nd4 11.Qd4=+) 9.Ng5= d5 10.Ne6 fe6 11.d3 Qd7 (better 11...ed3!? 12.Qd3 a5=+) 12.de4+/- de4 (12...Rad8!?+/-) 13.Qd7+- Nd7 14.Ne4 e5 (14...a6 15.f4+-) 15.Kd1 (15.Bc4 Kh8+-) 15...Bf6 16.Bc4 Kh8 17.Ke2 Rad8 18.Rad1 Nb6 19.Bb3 a6 (19...Nd7 20.f3+-) 20.Rd8 (20.Nc5 Rd1 21.Rd1 a5+-) 20...Rd8 21.Rd1 (21.Nc5 Rb8+-) 21...Rd1 22.Kd1 g6?? (22...Nc8+-) 23.Nf6 Kg7 24.Ng4 1-0. allyouneedisluft (2505) - TexasDeBrazil (2230), Hourly HyperBullet Arena, lichess.org, 2017. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 Be7 5.Nc3)

6.Nf3 Bg4 7.h3 Bh5 8.g4 Bg6 9.Rg1 e4 (9...a5 10.Nh4=) 10.Nh4= Nbd7 (10...d5!?=) 11.g5 Ne5 (11...Nh5!?+/-) 12.gf6+- Bf6 13.Ng6 hg6? (better 13...Nf3 14.Qf3! ef3 15.Nf8 Qf8+-) 14.Qf3 (better 14.Ne4 Nd3 15.Bd3 Bb2 16.Rb1+-) 14...ef3 (better 14...Nf3 15.Kd1 Bc3 16.Bc3 Ng1 17.d3-+) 15.Bd3 (15.d4 Nd7-+) 15...Kh7 (15...Nd3 16.cd3 Qd7 17.Rg3-+) 16.0-0-0 (16.Bf1 Re8-+) 16...Kh8 (better 16...Nd3 17.cd3 c6 18.Rg4-+) 17.Nb5 0-1. opperwezen (2725) - TwelveTeen (2655), lichess.org, 2018.

6.Bb5 A) 6...c6 A1) 7.Bf1 0-0 (7...h6 8.Bd3 0-0 9.Nf3 a5 10.0-0 Na6 11.b5 Nc5) 8.Nf3 h6 9.Be2 Nbd7 10.0-0 a5 11.b5 Qc7; A2) 7.Bd3 a5 (7...d5 8.Nh3 h6 9.0-0 0-0 10.f4 Bh3 11.gh3 e4) 8.Nf3 Na6 9.b5 Nc5 10.Ng5 Nd3 11.cd3 Bd7; A3) 7.Be2 0-0 (7...h6 8.Nh3 0-0 9.0-0 Nbd7 10.f4 Bh3 11.gh3 d5) 8.Nf3 h6 9.0-0 Nbd7 10.h3 d5 11.b5 c5; B) 6...Nbd7 B1) 7.Nh3 c6 (7...h6 8.Qf3 c6 9.Bd3 g5 10.Qd1 a5 11.f3 d5) 8.Bd3 h6 9.f4 Bg4 10.Qc1 Bh3 11.gh3 0-0; B2) 7.h4 a6 (7...Ng4 8.Nf3 0-0 9.h5 c6 10.Be2 Nb6 11.0-0 Nc4) 8.Be2 0-0 9.Nf3 h6 10.0-0 c6 11.d3 Ng4; B3) 7.Nf3 h6 (7...c6 8.Bd3 h6 9.0-0 0-0 10.Be2 a5 11.b5 Qc7) 8.Qe2 c6 9.Ba4 0-0 10.0-0 Qb6 11.Bb3 Bb3; C) 6...Bd7 C1) 7.Bd7 Qd7 (7...Nbd7 8.Nf3 e4 9.Nd4 Ne5 10.d3 c5 11.Nf5 ed3) 8.Nf3 0-0 9.Qe2 Nc6 10.b5 Nd8 11.0-0 Ne6; C2) 7.Qf3 Bb5 (7...Nc6 8.Nge2 0-0 9.Bd3 Bg4 10.Qg3 Qd7 11.f3 Bf5) 8.Nb5 Nc6 9.Ne2 0-0 10.0-0 d5 11.Nbc3 a6; C3) 7.Nf3 Bb5 (7...0-0 8.Bd3 a6 9.0-0 Nc6 10.Qe2 h6 11.e4 Be6) 8.Nb5 0-0 9.0-0 Nc6 10.Qe2 a6 11.Nc3 d5; D) 6...Nc6 D1) 7.Be2 0-0 (7...h6 8.Nf3 e4 9.Nd4 Nd4 10.ed4 0-0 11.0-0 d5) 8.Nf3 h6 9.d4 ed4 10.Nd4 Nd4 11.Qd4 c5; D2) 7.Nh3 h6 (7...0-0 8.Ng5 Bf5 9.Bd3 Bd3 10.cd3 h6 11.Nge4 d5) 8.0-0 0-0 9.d4 a6 10.Be2 Bh3 11.gh3 ed4; D3) 7.Nf3 0-0 (7...a5 8.Ng5 0-0 9.0-0 ab4 10.Ne6 fe6 11.ab4 Nb4) 8.0-0 a6 9.Ba4 b5 10.Bb3 Qd7 11.Be6 fe6.

6.Bd3 A) 6...h6 A1) 7.Nge2 0-0 (7...Nc6 8.f4 0-0 9.f5 Bc8 10.0-0 d5 11.Qe1 e4) 8.0-0 Nc6 9.f4 d5 10.f5 Bc8 11.Ng3 e4; A2) 7.Ne4 0-0 (7...Nc6 8.Nf6 Bf6 9.Nf3 0-0 10.0-0 a6 11.h3 d5) 8.Nf6 Bf6 9.Nf3 Nd7 10.Qb1 Nb6 11.0-0 Nc4; A3) 7.f4 ef4 (7...0-0 8.Nf3 ef4 9.ef4 c5 10.f5 Bd7 11.bc5 d5) 8.ef4 a5 9.Nf3 0-0 10.f5 Bd7 11.b5 Qc8; B) 6...a5 B1) 7.b5 Nbd7 (7...0-0 8.Nf3 h6 9.0-0 Nbd7 10.Be2 Re8 11.d3 d5) 8.Nf3 h6 9.0-0 0-0 10.Be2 Re8 11.d3 d5; B2) 7.Nh3 ab4 (7...Na6 8.b5 Nc5 9.Ng5 Bd7 10.Qf3 0-0 11.Nge4 Nfe4) 8.ab4 Nc6 9.Ra8 Qa8 10.b5 Nb4 11.Ng5 Bd7; B3) 7.Nf3 h6 (7...ab4 8.ab4 Nc6 9.Ra8 Qa8 10.b5 Nb4 11.Qe2 Nd3) 8.Nh4 ab4 9.ab4 Ra1 10.Qa1 Nc6 11.Nf5 0-0; C) 6...d5 C1) 7.Nge2 0-0 (7...Nc6 8.0-0 0-0 9.f3 Qd7 10.Qe1 a6 11.Qg3 Nh5) 8.0-0 Nc6 9.f4 e4 10.Bb5 d4 11.Na4 de3; C2) 7.f3 0-0 (7...Nc6 8.Nge2 0-0 9.0-0 Qd7 10.Qe1 a6 11.Rb1 h6) 8.Nge2 a5 9.0-0 Nbd7 10.Qe1 ab4 11.ab4 Ra1; C3) 7.Be2 0-0 (7...Nbd7 8.Nf3 0-0 9.0-0 h6 10.Na4 Qe8 11.Nc3 c6) 8.Nf3 Nbd7 9.0-0 h6 10.d4 e4 11.Ne5 c6; D) 6...0-0 D1) 7.Nf3 h6 (7...Nc6 8.Ng5 d5 9.Ne6 fe6 10.b5 Na5 11.0-0 Qd6) 8.0-0 a5 9.Qe2 Na6 10.Bc4 ab4 11.ab4 Nb4; D2) 7.Be2 a5 (7...Nc6 8.Nf3 h6 9.0-0 e4 10.Nd4 Nd4 11.ed4 d5) 8.b5 Nbd7 9.Nf3 h6 10.0-0 Nb6 11.d3 c6; D3) 7.Nh3 h6 (7...d5 8.Ng5 Bd7 9.Nd5 Nd5 10.Qh5 Nf6 11.Bh7 Kh8) 8.0-0 d5 9.f4 Bh3 10.gh3 e4 11.Be2 Nc6.

6.Be2 A) 6...h6 A1) 7.h3 0-0 (7...Nc6 8.Nf3 0-0 9.d4 ed4 10.Nd4 Nd4 11.Qd4 c5) 8.Nf3 Nc6 9.d3 a6 10.d4 ed4 11.Nd4 Nd4; A2) 7.Nf3 Nc6 (7...0-0 8.0-0 a5 9.b5 Nbd7 10.d3 c6 11.h3 Qc7) 8.0-0 0-0 9.d3 a6 10.d4 ed4 11.Nd4 Nd4; A3) 7.d4 ed4 (7...Nbd7 8.d5 Bf5 9.Nf3 0-0 10.0-0 Nb6 11.Nh4 Bd7) 8.ed4 d5 9.Nf3 0-0 10.0-0 Nbd7 11.Bd3 a5; B) 6...Nc6 B1) 7.b5 Na5 (7...Nb8 8.Nf3 h6 9.0-0 0-0 10.e4 c5 11.d3 Nbd7) 8.Nf3 h6 9.0-0 0-0 10.e4 Nc4 11.Bc4 Bc4; B2) 7.Rb1 0-0 (7...h6 8.Nf3 e4 9.Nd4 Nd4 10.ed4 0-0 11.0-0 a5) 8.Nf3 h6 9.d3 a6 10.d4 e4 11.d5 ef3; B3) 7.Nf3 h6 (7...0-0 8.0-0 h6 9.d3 Re8 10.b5 Na5 11.Qd2 c6) 8.0-0 e4 9.Nd4 Nd4 10.ed4 0-0 11.d3 d5; C) 6...Nbd7 C1) 7.Nh3 h6 (7...Nd5 8.0-0 0-0 9.d4 c6 10.Qd2 N5b6 11.de5 Ne5) 8.0-0 0-0 9.f4 Bh3 10.gh3 d5 11.fe5 Ne5; C2) 7.Qc1 0-0 (7...h6 8.Nf3 0-0 9.0-0 c6 10.d3 Qc7 11.Qd2 d5) 8.Nf3 h6 9.0-0 c6 10.d3 Qc7 11.Qd2 d5; C3) 7.Nf3 h6 (7...0-0 8.0-0 h6 9.e4 c5 10.h3 a6 11.d3 cb4) 8.0-0 0-0 9.e4 c5 10.h3 Qb6 11.b5 c4; D) 6...0-0 D1) 7.h4 Nc6 (7...Nbd7 8.Nf3 Ng4 9.d4 f5 10.d5 Bf7 11.Rh3 a5) 8.Nf3 Ng4 9.Ne4 h6 10.h5 d5 11.Ng3 a6; D2) 7.b5 a6 (7...Nbd7 8.Nf3 h6 9.0-0 Nb6 10.e4 Nc4 11.Bc4 Bc4) 8.Nf3 ab5 9.Bb5 c6 10.Be2 h6 11.0-0 Nbd7; D3) 7.Nf3 h6 (7...Nc6 8.Ng5 Bf5 9.Bd3 Qd7 10.b5 Na5 11.0-0 d5) 8.h3 Nc6 9.d3 Qd7 10.0-0 a6 11.Qd2 d5.

6.e4 0-0 A) 7.Be2 Nc6 (7...d5 8.ed5 Nd5 9.Nf3 Nc6 10.0-0 Nf4 11.Bb5 f6) 8.Nf3 d5 9.ed5 Nd5 10.0-0 Nf4 11.Bb5 f6; B) 7.Bd3 a5 (7...h6 8.Nf3 a5 9.0-0 Na6 10.Ba6 Ra6 11.b5 Rb6) 8.b5 Nbd7 9.Nf3 Nc5 10.0-0 Nd3 11.cd3 h6; C) 7.Nf3=+ a5 (7...h6 8.d4 a5 9.b5 Nbd7 10.Be2 c6 11.0-0 Qc7) 8.Be2 Na6 9.d4 ab4 10.ab4 Nb4 11.Ra8 Qa8.

6.e4 a5 A) 7.Nh3 h6 (7...Nc6 8.Ng5 0-0 9.b5 Nd4 10.Ne6 fe6 11.Bd3 Qe8) 8.b5 Nbd7 9.Bd3 Nc5 10.Qf3 g5 11.Qe3 Qd7; B) 7.Be2 ab4 (7...Na6 8.Nf3 ab4 9.ab4 Nb4 10.Ra8 Qa8 11.d4 0-0) 8.ab4 Nc6 9.Ra8 Qa8 10.b5 Nd4 11.Nf3 Qa5; C) 7.Nf3 0-0 (7...Na6 8.Ba6 Ra6 9.0-0 0-0 10.b5 Rb6 11.a4 c6) 8.b5 Nbd7 9.Bd3 Nh5 10.g3 Nc5 11.0-0 Nd3.

6.e4 c6 7.h3 (7.Nf3 Nbd7= (7...0-0 8.Bd3 a5 9.Ng5 Na6 10.Ne6 fe6 11.Ba6 Ra6; 7...h6 8.Bd3 0-0 9.0-0 a5 10.Qe2 Na6 11.Bc4 ab4) 8.Ng5 0-0 9.Ne6 fe6 10.Bd3 d5 11.0-0 a5; 7.Be2 Nbd7 (7...0-0 8.Nf3 h6 9.0-0 Nbd7 10.d4 a5 11.Qd2 Qb6) 8.Nf3 h6 9.0-0 0-0 10.d4 Qc7 11.Qd3 Nb6; 7.Nh3 h6 (7...0-0 8.Ng5 Bd7 9.Be2 h6 10.Nf3 Be6 11.0-0 Nbd7) 8.f4 0-0 9.Bd3 a5 10.f5 Bd7 11.b5 cb5) 7...0-0 (7...d5 8.Nf3 (8.Bd3 d4 9.Nce2 0-0 10.f4 c5 11.bc5 ef4) 8...d4 9.Ne2=+ (9.Na4 Nbd7 10.Bd3 b5 11.Nc5 Bc5) 9...Nbd7 10.Ng5 Nb6 11.Ng3 0-0; 7...Nbd7 8.Nf3 d5 9.Bd3 h6 10.0-0 0-0 11.Qe1 d4) 8.Nf3= Nbd7 9.Be2 (9.d4 a5= 10.Bd3 Qb6 11.Na4 Qa7; 9.Bd3 h6 10.0-0 d5 11.Re1 d4) 9...Qc7 (9...d5 10.Ng5=+ (10.ed5 cd5 11.0-0 h6) 10...d4 11.Nb1 a5) 10.d3 (10.d4!?= h6 11.0-0 Nb6; 10.Ng5 d5 11.0-0 d4) 10...d5=+ (10...a5 11.0-0 ab4) 11.ed5 (11.Ng5 d4) 11...Nd5 (11...cd5–/+) 12.Nd5 cd5 13.c3 Bf6 (13...Rfe8 14.0-0=+) 14.Rc1 Rac8 15.g4 (15.0-0 Nb6=+) 15...e4 16.de4 (16.Nd4 ed3 17.Bd3 Ne5–/+) 16...de4 17.Nd4 Bc4 18.h4 (18.Nb5 Bb5 19.Bb5 Ne5–/+) 18...e3 (18...Ne5!? 19.g5 Nd3 20.Bd3 ed3–+) 19.Bc4–/+ ef2 20.Kf2 Qf4 (better 20...Qc4!? 21.g5 Be5–/+) 21.Qf3= Qf3 22.Nf3 (worse 22.Kf3 Ne5 (22...Rc4?! 23.g5 Be5 24.Rcd1=) 23.Kg2 Nc4–/+ (23...Rc4?! 24.g5 Bd8 25.Rh3=)) 22...Rc4 23.g5 Ne5 (23...Bd8=) 24.Ne5 (24.gf6 Nd3 25.Ke3 Nb2 26.Rhg1=+) 24...Be5–/+ 25.Rh3 (25.h5 b5–/+) 25...f6 26.Ke2 fg5 27.hg5 Bf4 (27...Rg4 28.Re1 Rg2 29.Kd3 Rd8 (29...Rb2?! 30.Re5 Rd8 31.Ke4=; 29...Rg5?! 30.Bc1 Rd8 31.Ke2–/+) 30.Kc4 Rg5–/+ (30...Rb2?! 31.Re5 Rc8 32.Kb5=)) 28.Rg1 (28.Rf1 Rfc8=+) 28...Rd8 (28...Re8 29.Kd3 b5 30.Rf1=+) 29.Bc1= Bc1 30.Rc1 Rg4 31.Rch1 Rg5 (31...Rc8=+) 32.Re3 (32.Rh7!? Kf7 33.Rh8 Rg2 34.Kf3 Rh8 35.Rh8=) 32...Rgd5 (32...Rg2 33.Kf3 Rc2 34.Rh3–/+) 33.Rc1 (33.c4 Rd2 34.Kf3 h6–/+) 33...Rd2 34.Ke1?? (34.Kf3 h5–/+) 34...R8d7 (better 34...Rh2 35.Rf3 Re8 36.Kd1 Rf8 37.Rf8 Kf8–+) 35.c4 Rh2 36.Rcc3 Kf8 (36...Rdd2!? 37.Re8 Kf7 38.Ree3–+) 37.c5 Re7 (37...h5 38.Rf3 Kg8 39.Rh3 Rh3 40.Rh3–/+) 38.Re7=+ Ke7 39.c6 bc6 40.Rc6 g5 41.Rc7 Kf6 42.Ra7 g4 43.b5 h5 44.Ra4 (44.Ra6 Kg5 45.b6–/+) 44...Rb2 45.Ra6 Kg5 46.a4 g3 (46...h4 47.Ra8 h3 48.Rg8 Kf4 49.Rf8 Ke3 50.Re8 Kf3 51.Kd1–+) 47.Kf1 (47.Ra8 g2 48.Rg8 Kf4–+) 47...Kg4 48.Rg6 Kh3 Black prepares g2 49.b6 Kh2 50.a5 Rb1 (better 50...h4!? 51.Ke1 g2 52.Kd1–+) 51.Ke2 g2 52.a6 (52.Rg5 h4 53.Rg4–+) 52...Rb6!! 53.Rb6 g1Q 54.Rd6 (54.a7 Qg2 (54...Qb6?! 55.a8Q–+) 55.Ke3 Qg5 56.Kf3 Qf5 57.Ke2 Qe4 58.Kd2 Qd5 59.Ke3 Qa5–+) 54...Qg2 (better 54...Qg4 55.Kd3 Qd1 56.Kc4 Qd6 57.Kb5–+) 55.Kd3 (55.Kd1 Qg4 56.Kc1 Qc4 57.Kd1 Qa4 58.Ke1–+) 55…Qg3 (55...Qg3 56.Ke4 Qd6–+) 0–1. Hoose,Hannelore (1825) – Abolina,Aria Solveiga, XVI WSen w, Arvier ITA, 2006.

6.e4 Nc6 A) 7.Bd3 0-0 (7...Nd4 8.Nge2 0-0 9.0-0 c5 10.Nd4 cd4 11.Ne2 Qb6) 8.Nf3 d5 9.b5 Nd4 10.ed5 Nd5 11.Nd4 ed4; B) 7.Be2 0-0 (7...d5 8.ed5 Nd5 9.Nf3 0-0 10.0-0 Nf4 11.Bb5 f6) 8.Nf3 d5 9.ed5 Nd5 10.0-0 Nf4 11.Bb5 f6; C) 7.Nf3 a5 (7...0-0 8.Bd3 Nd4 9.0-0 Bg4 10.Be2 Bf3 11.Bf3 Qd7) 8.b5 Nd4 9.Bd3 Bg4 10.Be2 Bf3 11.Bf3 Qd7.

6.e4 d5 A) 7.ed5 Nd5 (7...Bd5 8.Nf3 Nc6 9.Be2 0-0 10.Nd5 Qd5 11.d3 Rfd8) 8.Nf3 Nc6 9.Bb5 f6 10.0-0 Nc3 11.Bc3 0-0; B) 7.Nf3 de4 (7...d4 8.Na4 Ne4 9.Bd3 Qd5 10.Qe2 f5 11.c4 dc3) 8.Ne5 Nbd7 9.Nd7 Qd7 10.d3 Bg4 11.Be2 Be2; C) 7.Bb5 c6 (7...Nc6 8.ed5 Nd5 9.Nf3 f6 10.0-0 Nc3 11.Bc3 0-0) 8.Bd3 d4 9.Na4 Nbd7 10.Nf3 0-0 11.0-0 b5.

6.Nf3 A) 6...Nc6 A1) 7.b5 Na5 (7...Nb8 8.Ng5 Nbd7 9.Be2 0-0 10.Ne6 fe6 11.0-0 d5) 8.d4 e4 9.d5 ef3 10.de6 fe6 11.Qf3 0-0; A2) 7.Be2 h6 (7...0-0 8.Ng5 Bd7 9.Bd3 d5 10.b5 Na5 11.Be2 d4) 8.0-0 0-0 9.Bd3 a6 10.Qe2 d5 11.e4 d4; A3) 7.Ng5 Bd7 (7...0-0 8.Ne6 fe6 9.Be2 d5 10.0-0 d4 11.Na4 a6) 8.Bd3 d5 9.f4 e4 10.Be2 0-0 11.0-0 h6; B) 6...Qd7 B1) 7.d4 ed4 (7...e4 8.d5 ef3 9.de6 fe6 10.Qf3 Nc6 11.Bd3 0-0) 8.Nd4 Nc6 9.Ne6 Qe6 10.Be2 0-0 11.0-0 d5; B2) 7.Bb5 Nc6 (7...c6 8.Bd3 h6 9.0-0 0-0 10.Qe2 Qc7 11.e4 Nbd7) 8.d4 ed4 9.Nd4 0-0 10.0-0 d5 11.Ne6 Qe6; B3) 7.Ng5 Nc6 (7...0-0 8.Bb5 Nc6 9.0-0 Bf5 10.e4 Bg6 11.Qe2 Nd4) 8.Be2 0-0 9.0-0 d5 10.Ne6 Qe6 11.Nb5 Qd7; C) 6...h6 C1) 7.Bb5 c6 (7...Nbd7 8.Qe2 c6 9.Bc4 d5 10.Bb3 0-0 11.0-0 Qc7) 8.Bd3 0-0 9.0-0 Nbd7 10.Qe2 d5 11.e4 d4; C2) 7.h3 a5 (7...0-0 8.d4 Nbd7 9.Bd3 c6 10.0-0 Qc7 11.e4 b5) 8.d4 0-0 9.b5 Nbd7 10.Bd3 ed4 11.Nd4 d5; C3) 7.d4 Nbd7 (7...0-0 8.de5 de5 9.Ne5 Nbd7 10.Nd7 Bd7 11.Bc4 a5) 8.Bd3 0-0 9.0-0 c6 10.Qd2 Qc7 11.e4 a5; D) 6...0-0 D1) 7.Ng5 Bd7 (7...d5 8.Ne6 fe6 9.Be2 d4 10.ed4 ed4 11.Na4 Qd7 ) 8.Be2 h6 9.Nge4 Nc6 10.Bc4 Be6 11.Be6 fe6; D2) 7.Bd3 h6 (7...Nc6 8.Ng5 d5 9.b5 Na5 10.Ne6 fe6 11.0-0 e4) 8.0-0 a5 9.b5 Nbd7 10.Qe2 Nc5 11.e4 c6; D3) 7.d4 a5 (7...ed4 8.Nd4 Bd7 9.Bd3 Nc6 10.0-0 d5 11.Be2 Ne5) 8.b5 e4 9.Ng5 Bf5 10.f3 d5 11.Be2 ef3.

6.h3 A) 6...a5 A1) 7.b5 0-0 (7...Nbd7 8.Nf3 0-0 9.Be2 h6 10.0-0 Qb8 11.a4 Qa7) 8.Nf3 Nbd7 9.Be2 d5 10.0-0 h6 11.Na4 Bd6; A2) 7.ba5 Ra5 (7...0-0 8.Nf3 h6 9.d4 Ra5 10.Bd3 Nc6 11.0-0 Qd7) 8.Nf3 h6 9.Bb5 Nbd7 10.Qe2 c6 11.Bc4 d5; A3) 7.Nf3 h6 (7...ab4 8.ab4 Nc6 9.Ra8 Qa8 10.b5 Nb4 11.b6 cb6) 8.b5 0-0 9.d4 e4 10.d5 ef3 11.de6 fe6; B) 6...Nc6 B1) 7.b5 Na5 (7...Nb8 8.Nf3 Nbd7 9.Ng5 0-0 10.Be2 Bf5 11.Nf3 Nc5) 8.Nf3 0-0 9.Bd3 Nc4 10.Bc4 Bc4 11.d3 Be6; B2) 7.Bd3 d5 (7...0-0 8.Nf3 d5 9.b5 e4 10.bc6 bc6 11.Nd4 ed3) 8.Nge2 a6 9.Ng3 0-0 10.0-0 Qd7 11.f4 e4; B3) 7.Nf3 0-0 (7...Qd7 8.Bd3 0-0 9.0-0 h6 10.b5 Na5 11.Qe2 c5) 8.Bd3 d5 9.b5 e4 10.bc6 bc6 11.Nd4 ed3; C) 6...0-0 C1) 7.g4 a5 (7...Nc6 8.Nf3 e4 9.Ng5 d5 10.d3 Bd7 11.b5 h6) 8.Nf3 Na6 9.ba5 Nc5 10.d4 ed4 11.Nd4 Ra5; C2) 7.Bd3 d5 (7...a5 8.Nf3 Na6 9.Ba6 Ra6 10.0-0 h6 11.b5 Rb6) 8.Nge2 Nbd7 9.0-0 a5 10.f4 e4 11.Bb5 c6; C3) 7.Nf3 Nc6 (7...a5 8.Ng5 Na6 9.Ne6 fe6 10.Ba6 ba6 11.Qe2 Rb8) 8.Be2 e4 9.Ng5 Bf5 10.g4 Bg6 11.h4 h6; D) 6...h6 D1) 7.Be2 Nc6 (7...0-0 8.Nf3 Nbd7 9.0-0 Nb6 10.e4 a5 11.d3 ab4) 8.Nf3 a6 9.0-0 0-0 10.e4 d5 11.ed5 Nd5; D2) 7.Bd3 d5 (7...0-0 8.Nf3 a5 9.0-0 Na6 10.Ba6 Ra6 11.b5 Rb6) 8.Nge2 0-0 9.0-0 a5 10.f4 e4 11.Bb5 c6; D3) 7.Nf3 a5 (7...0-0 8.d4 Nbd7 9.Bd3 c6 10.0-0 Qc7 11.e4 b5) 8.b5 Nbd7 9.d4 0-0 10.Bd3 ed4 11.Nd4 Ne5.

6.Qc2 a5 7.b5 Nbd7 8.d4 ed4 9.Bd4 c5 10.Bb2 b6 11.Nf3 d5 12.cd5+= Nd5 13.Bd3 N5f6 14.Nbd2 Bb7 15.0-0 Bd6 16.Nc4 Bc7 17.e4 Nh5 18.Rad1 Nf4 19.Rfe1 Re8 20.Qc3 Qf6 21.e5 Qh6 22.Be4 Be4 23.Re4 Rad8 24.Qc1 Nf8 25.Rd8 Rd8 26.g3 Nh3 27.Kg2 Qe6 28.Rh4+/- g5 29.Ng5 Ng5 30.Qg5 Ng6 31.Rg4 Rd3 32.Re4 f5 33.Rf4 Qd5 34.Kh3 Rb3 35.Qf5 Nf4= 36.Qf4 Qe6 37.Kg2 Rb5 38.Qe4 Rb3 39.Qa8 Kf7 40.Qb7 Qe7 41.Qc8 Rb2 42.Qf5 Kg7= 43.Nb2 Qe5 44.Qe5 Be5 45.Nc4 Bc7 46.a4 Kf6 47.Kf3+= Kg5 48.Ne3 Bb8 49.Nd5 b5 50.ab5+- a4 51.Ke4 a3 52.Nc3 Ba7 53.f3 Bb6 54.Kd5 Kf6 55.Na2 c4 56.Kc4 Bg1 57.Nc3 Bh2 58.Kb3 Bg1 59.Ka3 Ke5 60.Ne2 Bb6 61.Kb4 Kd5 62.g4 Bd8 63.Nf4 Ke5 64.Nh5 Kd4 65.f4 Bc7 66.f5 h6 67.Nf6 Ke5 68.Ng8 h5 69.gh5 Kf5 70.Kc5 Kg5 71.h6 Kg6 72.Kc6 Bd8 73.Kd7 Ba5 74.Ne7 Kh6 75.Kc6 Kg7 76.Nf5 Kf7 77.Nd6 Ke7 78.Nb7 Bc3 79.b6 Be5 80.Nc5 Kd8 81.Na6 Bf4 82.b7 Bh2 83.Nc5 Ke8 84.Ne6 Bb8 85.Ng5 Kd8 86.Ne4 Bc7 87.Nd6 Bb8 88.Nc4 Bc7 89.Nb2 Be5 90.Nd3 Bh2 91.Ne1 Bc7 92.Ng2 Be5 93.Nh4 Bb8 94.Nf5 Ba7 95.Nd4! Bb8 96.Nb3 Ke8 97.Kb6 Kd8 98.Nc5 Bh2 99.Ka7 Ke8 100.Ka8 Kf7 101.Na4 Ke6 102.Ka7 Kd7 103.Nc3 Kc6 104.Nd1 Bc7 105.Ne3 Bb6 106.Ka8 Bc7 107.Nc2 Kb6 108.Nb4 Bg3 109.Nd5 Ka6 110.Ne7 Kb6 111.Nf5 Be5 112.Nh6 Ka6 113.Nf7 Bc7 114.Ng5 Bh2 115.Nf3 Bf4 116.Nd4 Be5 117.Ne6 Bh2 118.Ng7 Be5 119.Ne8 Kb5 120.Nf6! Ka6 121.Ne4 Bf4 122.Nc5 Kb6 123.Nd7 Ka6 124.Nf8 Bc7 125.Ng6 Kb6 126.Nh4 Bf4 127.Ng2 Be5 128.Ne3 Ka6 129.Nc4 Bf4 130.Na3 Bc7 131.Nb1 Kb6 132.Nc3 ½–½. Deep Fritz – Shredder 6, Blitz, 2002.

6.Qc2 b6 7.Nc3 Bb7 8.Nf3 Nbd7 9.e4 (9.Be2 e4 10.Ng5 a5=) 9...c6 (9...a5 10.b5=) 10.d4 ed4 11.Nd4 c5 (11...d5 12.b5 cb5 13.cd5=) 12.Nf5+= Re8 (12...cb4 13.ab4 d5 14.cd5 (< 14.Nd5 Bd5 15.cd5 Bb4 16.Ke2 Ne4–/+) 14...Bb4 15.Bd3+=) 13.Bd3 g6 14.Ne7 Qe7 15.0-0 Be4? (better is 15...Ng4 16.Nd5 Qh4+/-) 16.Ne4 Ne4 17.Rae1 f5 18.f3 Qh4 (18...cb4 19.ab4 (19.Be4?! fe4 20.Re4 Qf7+/-) 19...d5 20.cd5 Qb4 21.fe4 (21.Be4?! fe4 22.fe4 Qc5 23.Rf2 Qc2 24.Rc2 Ne5+=) 21...Qc5 22.Qc5 Nc5 23.Bc4+-) 1–0. Trkn – guest4803, ICC, 2004.

6.Qc2 Nc6 7.Nc3 Be6 8.Bd3 a5 (8...d5 9.cd5 Bd5 10.Nd5 Qd5 11.e4=) 9.b5 Nb8 10.Nf3 b6 (10...h6!?=) 11.Ng5+= g6 12.Ne6 fe6 13.0-0 Nbd7 14.Be2 Nc5 (14...d5 15.d4 ed4 16.ed4+-) 15.f4 (15.d4 Ncd7+-) 15...ef4 16.Rf4 e5 17.Rf2 a4 (17...e4 18.Raf1+-) 18.Raf1 Nfd7 (18...e4 19.Nd5 Nfd7 20.Rf8 Bf8 21.Qc3+-) 19.Bf3 Rb8 (19...Ra7 20.d4 Nb7 21.Na4+-) 20.Bd5 Kg7 (20...Kh8 21.d4 Rf2 22.Rf2 (22.Qf2?! Nd3 23.Qe2 Nb2+-) 22...ed4 23.ed4+-) 21.Rf8 Bf8 22.d4 1–0. Trigance,Emile – Jefferis,Des, FICGS, 2011.

6.Qc2 Re8 7.Nf3 Bg4 8.Be2 Nbd7 9.d3 c6 10.Nbd2 Bf8 11.h3 Bf3 12.Nf3 d5 13.0-0 Rc8 14.Rac1 a5 15.c5 ab4 16.ab4 e4 (16...b6 17.d4 ed4 18.ed4+= (worse is 18.Bd4 bc5 19.Bc5 Nc5 20.bc5 Nd7–/+)) 17.Nd2 ed3 18.Bd3 b6 19.Bf5 Rb8 20.Bd7 (20.b5!?+=) 20...Nd7= 21.Bd4 bc5 22.bc5 Rb5 23.Rb1 Rb1 24.Rb1 (worse is 24.Qb1 Bc5 25.Bc5 Nc5+=) 24...Qc7 25.Nf3 h6 26.Qc3 Rb8 27.Rc1 Rb5+= 28.Qa3 Qa5 29.Ra1 Rb1! 30.Kh2 Ra1 31.Qa1 Qa1 32.Ba1 Bc5 33.g4 f6 34.Kg2 Kf7 35.Nd2 g5 36.Nb3 Bd6 37.Na5 c5 38.Nb7 Be5 39.Be5 fe5 40.Nd6 Kg6 41.Nb5 Kf6 42.Kf1 d4 43.Ke2 Nb6 44.Nd6 c4 45.Ne4 Ke6 46.Nc5 Kd5 47.Na6 d3 48.Kd2 e4 49.Nb4 Kd6 50.Na2 Na4 (50...Na4 51.Kd1 c3–+) 0–1. Colsen,M – Van Nassau,Erik, PKS op–B Netherlands, 2003.

6.Qc2 g6 7.Nc3 Bf5 8.Qb3 Be6 9.Nf3 e4 10.Nd4 Nc6 11.Ne6 fe6 12.Qc2 d5 13.Be2 Ne5 14.Nd5+/- Nd5 15.Be5+- Nf6 16.Rd1 c6 17.Bf6 Bf6 18.Qe4 e5 19.0-0 Qe7 20.d4 Rad8 21.d5 c5 22.b5 b6 23.Bg4 Qd6 24.Be6 Kg7 25.a4 Qe7 26.Ra1 h6 27.a5 g5 28.ab6 ab6 29.Ra6 Qc7 30.Rfa1 (30.Rfa1 Qd6 31.Ra7 Be7 32.Qg4+-) 1–0. orangutanb4 (2005) – scacchis (1655), kurnik, 2011.

6.Nc3 a6 7.Qc2 Be6 8.Nf3 Nc6 9.Be2 h6 (9...g6 10.0-0=) 10.0-0 Qd7 11.h3 Rad8 (11...Bf5 12.d3+=) 12.Rac1 (12.e4 Nh7+=) 12...Bf5 (12...Rde8 13.e4+=) 13.d3+= d5?? (better is 13...Rfe8+=) 14.cd5+- Nb8 (14...Nd5 15.Nd5 Qd5 16.e4+-) 15.e4 Bh7 16.Ne5 (16.Na4 Qe8 17.Ne5 Bd6+-) 16...Qc8 (16...Qe8 17.Nc4 c6 18.Bf3 cd5 19.Nd5 Nd5 20.ed5+-) 17.Nc4 c6 18.d6! Bd6 (18...Rd6 19.e5 Rdd8 20.ef6 Bf6 21.Ne4 Bb2 22.Qb2+-) 19.Nd6 Rd6 20.e5 1–0. samurai – chessNstocks, ChessWorld.net, 2015.

6.Nc3 a6 7.Nf3 Bg4 8.Be2 c6 9.0-0 Bf3 10.Bf3 (worse is 10.gf3 d5 11.d4 ed4 12.Qd4 dc4 13.Qc4 b5=) 10...e4 (better is 10...d5!?=) 11.Ne4+/- Ne4 (11...b5 12.d3+/-) 12.Be4 Bf6 13.d4 d5 14.cd5 cd5 15.Bf3 Nc6 16.Rc1 Rc8 17.Qb3 Ne7 18.Rc8 Qc8 19.Bd5 Nd5 20.Qd5 Rd8 21.Qb3 h6 22.Rc1 Qf5 23.h3 Rc8 24.Rc8 Qc8 25.d5 Bb2 26.Qb2 Qc4 (26...Qd7 27.Qd4+-) 27.Qe5 Qc1 28.Kh2 Qa3 (28...Qc8 29.Qe7 a5+-) 29.Qe8 (29.d6 Qb4 30.d7 Qb6+-) 29...Kh7 30.d6 Qb4 31.d7 (31.d7 Qd6 32.f4+-) 1–0. Fournier,Frederic (1650) – Beliz, Redhotpawn.com, 2012.

6.Nc3 b6 7.Be2 Bb7 8.Bf3 Nc6 9.Nge2 Rb8 10.Qa4 Qe8 11.0-0 h6 12.Nb5?? a6?? 13.Nc7+/- Qd7 14.Na6 Ra8 15.b5 e4=+ 16.Be4 Ne4 17.Qc2 Na5 18.f3 Nf6–/+ 19.Nb4 Rfc8 20.d3 Qe6 21.e4= Qd7 22.Nd4 d5=+ 23.Nf5 dc4–/+ 24.Ne7 Qe7 25.d4 Nb3 26.Rad1 Nh5 27.d5 Na5 28.Nc6 Nc6 29.dc6= Bc6 (29...Bc6 30.bc6 Rc6=). mgriffin (1870) – darkprincess (1840), net–chess.com, 2001.

6.Nc3 b6 7.Nf3 a5 8.b5 Nbd7 9.d4 Bb7 10.Be2 Re8 11.0-0 g6 12.Ne1 Bf8 13.a4 Bg7 14.Rc1 Ne4 15.Ne4 Be4 16.Bf3 ed4 17.ed4 Bh6 18.Rc3 Nf6 19.Bc1 Bc1 0-1. mgilbert – marekt, net-chess.com, 2020.

6.Nc3 c5 7.b5 b6 8.e4 Bb7 9.d3 a6 10.Nf3 h6 11.Be2= Qd7 12.0-0 ab5 13.Nb5 Bc6 14.Nc3 Re8 15.h3 Nh7 16.Re1 Ng5 17.Bc1 Qe6 18.Ng5+= Bg5 19.Bg5 hg5 20.Bg4 Qh6 21.Nb5 Bb5= 22.cb5 Re7 23.a4 Nd7 24.Qd2 Nf6 25.Bd1 d5 26.Be2 d4 27.Reb1 Nh5 28.Bh5+= Qh5 29.a5 g4 30.hg4+/- Qg4 31.ab6 Rb8 32.Ra7 Reb7 33.Rb7+/- Rb7 34.Qa5 Qc8 35.Rc1 g6 36.Qa6 Kg7 37.Rc5 Qc5= 38.Qb7 Qb5?? 39.Qc7 Qd3 40.Qe5 Kh6 41.Qf4 Kg7+/- 42.Kh2 Qb5 43.Qc7 d3 44.b7 Qh5 45.Kg1 ½–½. marnzell – Steve20, ChessWorld.net, 2006.

6.Nc3 c5 7.Qc2 Nbd7 8.Nd5 Nd5–/+ 9.cd5 Nf6 10.e4 b6 11.Bc4 Nh5 12.Ne2= f5 13.d3 f4 14.0-0-0 cb4–/+ 15.ab4 a6 16.b5? ab5–+ 17.Bb5 Bd7 18.Nc3? Rc8 19.Bd7=+ Qd7 20.f3? b5–/+ 21.Qb3 Qb7 22.Kd2 Qb6 23.Rde1 Rb8 24.Re2 Rfc8 25.Na2 Bh4 26.Nb4 Bf2 27.Nc6 Rb7 28.d4 Bd4 29.Bd4 ed4 30.Rc1 Kf8 31.Qb4+= Kf7? 32.Qd6+- Re8 33.e5 Kg8 34.Qb4 Qa6 35.d6 Qa2 36.Rc2 Qd5 37.Qd4 Qd4? 38.Nd4 b4 39.Kc1 Kf7 40.e6 (40...Kg6 41.Rcd2+-) 1–0. Proske – Weber, corr DDR, 1981.

6.Nc3 c5 7.bc5 dc5 8.Nf3 Nc6 9.Qc2 Be6 10.Bd3 Bg4 (10...g6 11.h3=) 11.Ne4+= Bf3 12.gf3 Nh5 (12...g6 13.Rb1+=) 13.Ng3 (13.Ng3 Nf6 14.h4+=) 1–0. marekt (2175) – silencer123 (2005), gameknot.com, 2014.

6.Nc3 Nc6 7.Bd3= Bg4 8.Nf3 d5 9.cd5+= Nd5 10.b5 Na5 11.Qc2 Nc3? 12.Bc3+- b6? 13.Ne5 Be6 14.Bh7 Kh8 15.Be4 Bf6 16.Qd1 Rc8 17.Qh5 (17.Qh5 Kg8 18.Qh7#) 1–0. Stanley – Leo, private, 2011.

6.Nc3 Nc6 7.Nf3 Bg4 8.h3 Bh5 9.b5 Na5 10.d3 b6 11.Be2 Nd7 12.Nd5 Nf6 13.Ne7 Qe7 14.Nd2 Be2 15.Qe2 Nd7 16.0-0 Nc5 17.a4 a6 18.d4 ed4 19.Bd4 ab5 20.ab5 Ne6 21.Bc3 Nb7 22.Qg4 f6 23.Qe4 Nbc5 24.Qa8 Ra8 25.Ra8 Nf8 26.Rfa1 Nd3 27.R1a7 Kf7 28.Bd4 Kg6?? 29.Bb6+- Nd7 30.Rc7 Qe6 31.Raa7 Nb6 32.Rg7 Kf5 33.g4 Ke5 34.Rge7 (34.Rge7 d5 35.f4 Kd6 36.Re6 Ke6 37.Ra6 dc4 38.Rb6 Ke7 39.Rb7 Ke6 40.Nc4+-) 1–0. Fournier,Frederic (1990) – NN, Active, 2004.

6.Nc3 Nbd7 7.Be2 b6 (7...e4 8.Qc2+=) 8.Nf3= Bb7 9.0-0 Ne4 (9...e4 10.Nd4=) 10.d3 (10.d4 Nc3 11.Bc3 e4+=) 10...Nc3= 11.Bc3 Bf6 12.Rc1 Rc8 13.Nd2 c5 14.b5 d5 15.Bf3 Nb8 16.a4 (16.Qa4 Rc7+/-) 16...Rc7 (16...a6 17.ba6 Na6 18.Qb3 dc4 19.Qc4 Bf3 20.Nf3+=) 17.cd5 Bd5 18.Qc2 Bf3 19.Nf3 Re8 20.Rfd1 Nd7 21.Qb2 Qe7 22.Qa1 g6 23.Bb2 Kg7 24.Rc4 h6 25.Re4 Qe6 26.d4 Qf5 27.Nd2 cd4 28.ed4 Re7 29.Rde1 Rc2? 30.Nf3 Rc4 31.Nd2 Rc2 32.g4 Qe6+= 33.de5 Ne5? 34.Be5 Be5 35.Re5 Qg4 36.Kh1 Rd2?? 37.R5e4 f6 38.Re7 Kf8 39.Re8 Kf7 40.R1e7 1–0. Hansen,Bjarne G – Unger, corr 3GMM–15, 1996.

6.Nc3 Bf5 7.Nf3 Re8 8.d4 ed4 9.Nd4= Bg6 10.Bd3 Nbd7 11.Bg6+= hg6 12.0-0 Ne5 13.Qe2 Bf8 14.Nf3 Qe7 15.Rad1 Rad8 16.Nd5+/- Nd5 17.Rd5 Nf3 18.Qf3+/- Qe4 19.Qe4 Re4 20.Rd4 Rd4 21.Bd4+= c5 22.Bc3 Be7 23.b5 d5+= 24.cd5 Rd5 25.Rc1 c4 26.Bb4 Bb4 27.ab4+= c3 28.Kf1 Rb5 29.Rc3=+ Rb4 30.Rc8 Kh7 31.Ra8 a6–/+ 32.Ra7 g5 33.Ke2 Kg6 34.Kd3 Kf6 35.Kc3–/+ Rb5 36.g4 Ke5 37.f3 a5 38.Kc4 Rb4 39.Kc3 Kf6 40.Ra5 Rb1 41.Kd4 Rb2 42.Rf5 Kg6 43.Ke4 b5 44.Kd4 b4=+ 45.Kc4 f6 46.Rb5+= Rh2 47.Kb4 Re2 48.e4 Rf2 49.Rf5 Kf7 50.e5 Ke6 51.ef6 gf6 52.Kc4 Rd2 53.Kc5 Re2 54.Kd4 Re1 55.Kd3 Re5 56.Re5 Ke5 57.Ke3 ½–½. Kuipers,Stefan – Burg,Twan, Hengelo op U12, 2001.

6.Nc3 Bg4 7.Qc2 Nbd7 8.Nf3 a5 9.h3 Bh5 10.Nh4 Re8 11.g4= ab4 12.ab4 Ra1 13.Ba1 Bg6 14.Ng6 fg6 15.Bg2 c6 16.0-0 Nf8 17.b5+= Qd7 18.bc6 bc6 19.Qa4 Rc8 20.Ne2 Ne6 21.f4 ef4 22.Nf4 Nc5 23.Qc2 Ne6 24.Nd3 Ng5 25.Nf2 Rf8 26.h4 Ne6 27.g5 Nh5 28.Qa4 Nd8 29.Bh3 Qc7 30.Nd3 Rf1 31.Bf1 Qd7 32.c5 Qf5 33.cd6 Bd6 34.Qd4 Bc7 35.Ne5 Qe5 36.Qe5+/- Be5 37.Be5 Kf7 38.Bc4 Ke7 39.Kf2 Nf7 40.Bf7 Kf7+/- 41.Kf3 h6 42.Ke4 hg5 43.hg5 Ke7 44.Bh2 Ke6 45.Bb8 Kd7 46.Kd4 Ke6 47.e4+- (47...Kd7 48.Kc5+-) 1–0. Poley,V (2320) – Fernandez Fernandez,Ju (2055), 16th Donau Open, 2007.

6.Nc3 Bg4 7.Be2 Be2 8.Qe2 Nbd7 9.d3 a5 10.c5 (10.b5 c6=) 10...b5 (10...ab4 11.ab4 Ra1 12.Ba1 dc5 13.b5-/+) 11.e4? (better 11.cd6!? cd6 12.Nf3=+) 11...Ne4?? (better 11...ab4 12.cd6 bc3 13.de7 A) 13...cb2?! A1) 14.ed8B?? ba1Q (14...ba1B?! 15.Bf6 Bc3 16.Kd1 Nf6 17.Qa2-/+) 15.Qd1 Qd1 (15...Rad8?! 16.Qa1 Nc5 17.f3-/+) 16.Kd1 Rfd8-+; A2) 14.ef8R?! Nf8 15.Qb2 Qd3=; A3) 14.ef8Q Nf8 15.Qb2=; B) 13...Qe7 14.Bc3 Ra3 15.Ra3 Qa3-+) 12.Ne4 0-1. opperwezen (2775) - Jasugi99 (2730), lichess.org, 2019. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6 4.e3 Be7 5.c4 0-0 6.Nc3)

6.Nc3 Bg4 7.Be2 Be2 8.Nge2 =.

6.Nc3 h6 7.d3 Be6 8.Be2 Nh7 9.Nf3 f5 10.d4 e4 11.Nd2 Nf6 12.d5 Bf7 13.0-0 b6? (better 13...Nbd7!?=) 14.f3+/- ef3 15.Nf3 c5 16.Bd3 g6 17.Qd2 Nbd7 18.e4 fe4 19.Ne4 Ne4? (19...Kh7 20.Bc1 Ng8+-) 20.Qh6 (20.Be4 Bg5 21.Qc2 Bf6+/-) 20...Bf6 21.Be4 Bb2 22.Ng5 Bd4 23.Kh1 (23.Kh1 Qg5 24.Qg5 Ba1 25.Ra1+-) 1-0. Abigail64 (2550) - Stormart (2275), Rated Blitz game, lichess.org, 2016.

6.d3 a5 7.b5 Nbd7 8.Nd2 Nc5 9.Ngf3 Bf5 10.Qc2 c6 11.bc6 bc6 12.Be2 Rb8 13.0-0 (better 13.Rb1=+) 13...Nce4?? (better 13...Bd3 14.Bd3 Nd3 15.Qd3 Rb2-/+) 14.Qc1 (better 14.de4 Ne4 15.Ne4 Be4 16.Qe4 Rb2 17.Bd1+-) 14…Nf2 (14...Nf2 15.Rf2 Qb6+/-). opperwezen (2645) - chickencrossroad (2650), lichess.org, 2019. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 Be7 5.c4 0-0)

6.d3 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 d5 (9...Na6 10.Bc3=+) 10.Ne5 (10.c5 Na6 11.Qa4 d4 12.Ne5 de3 13.fe3 Nd5=+) 10...Bb4=+ 11.Nd2 (11.Bc3 Bc3 12.Nc3 d4–/+) 11...dc4 12.Nec4 Be6 (12...b5 13.Ne5=+) 13.Ne5 c5 (13...Bd5 14.Qc1=+) 14.Be2 Qa5 15.Nef3 Nbd7 16.0-0 b5 17.Ne4 Ne4 18.de4 h6 (18...Nb6 19.Ne5 Qa4 20.Nc6=) 19.Qd6 (19.Qc1 Rb8=+) 19...Ra8 20.h3 c4 (20...Kh7 21.Qg3 g6 22.Kh2=) 21.Qg3 c3 22.Nd4 Bc5 23.Ne6 fe6 24.Qg4 (24.Kh2 Rc8=+) 24...Nf8–/+ 25.Bc3 (25.Bd3!?–/+) 25...Qc3–+ 26.Bb5 Qe5 (26...Ra2 27.Qf3–+) 27.Bc4 Ra4 28.Rc1 (28.Bd3 Ra1–+) 28...Ba3 29.Rc2 h5 (29...Bd6 30.g3 Qa1 31.Bf1 Qb1–+) 30.Qh4? (30.Qf4 Qa1 31.Kh2 Qd1–+) 30...Ra8 (better 30...Bd6 31.Kf1 Bc7–+) 31.Qf4–/+ Qf4 (31...Qa1 32.Kh2 Be7 33.Qf5–/+) 32.ef4 Kh7 (32...Kf7 33.Kf1–/+) 33.Ra2 (33.e5 Bb4–/+) 33...Rc8 34.Bb3 (34.Be2 Bc1–/+) 34...Rc1 35.Kh2 Bc5 36.g3 (36.e5 g6–/+) 36...Rc3 37.Bd1 (37.Ba4 Kh6–/+) 37...Kh6 38.Rd2 (38.Kg2 Nd7–/+) 38...Rc4 (38...Ng6 39.Kg2–/+) 39.Bf3 Bd4 40.h4 Nd7 41.g4 (better 41.e5!?–/+) 41...hg4–+ 42.Bg4 (42.Be2 Rb4 43.Bg4 Nf6–+) 42...Nc5 43.Bf3 (43.Re2 Bf6–+) 43...Bf6 44.Re2 (44.Rd6 Rc3 45.Bh1 Kh5–+) 44...Bh4 45.Kh3 (45.Bg4 Re4 46.Re4 Ne4 47.Be6 Bf2–+) 45...Bf6 (45...g5 46.f5–+) 46.Kg4 g6 (46...Nd3 47.Bg2–+) 47.Kg3 (47.e5 Bg5 48.Be4 Ne4 49.fg5 Ng5 50.f4 Nf7–+) 47...Nd3 (47...g5 48.Bg2 Nd3 49.fg5 Kg5 50.Re3 Be5 51.Kf3–+) 48.Bg4 (48.Re3 Rd4 49.e5 Bd8–+) 48...e5 49.fe5 (49.f5–+) 49...Be5 (49...Ne5?! 50.Re3 g5 51.Bf5–+) 50.Kf3 Rc3 51.Re3 Bd4 0–1. Krishna Teja,N (2185) – Deshmukh,Anup (2250), Odisha IND, 2013. (=1.e3 e5 2.c4 Nf6 3.a3 Be7 4.b4 0-0 5.Bb2 d6)

6.d3 Nbd7 7.Nd2 a5 8.b5 b6 9.Ngf3= Bb7 10.Be2 Re8 11.0-0 Nf8 12.Re1 Ng6 13.Bf1 Bf8 14.Qc2 h5 (14...Qd7 15.Be2=) 15.g3 Ng4 Black plans h4 16.Bg2 h4 (16...c6 17.bc6 Bc6 18.h3+=) 17.h3 (17.Ne5 Bg2 18.Ng6 (18.Ng4?! Bh3 19.f3 hg3+=) 18...hg3 A) 19.Kg2? gf2 20.Re2 Qg5-+ (20...fg6?! 21.e4=); B) 19.hg3+/-) 17...Nf2? (better 17...Nf6!?+/-) 18.Kf2+- hg3 19.Kg3 f5 (19...c6 20.bc6 Bc6 21.Rac1+-) 20.Kh2 f4 (20...c6 21.bc6 Bc6 22.Rec1+-) 21.e4 (21.Ne5 Bg2 22.Ng6 fe3+-) 21...Be7 22.Rg1 Nh4 23.Bh1 Kh7 24.Rg4 (24.d4 Bf6+-) 24...Rf8? (better 24...Bc8+/-) 25.Rag1+- Bf6 (25...Nf3 26.Nf3 Bf6 27.Ng5 Bg5 28.Rg5+-) 26.Nh4 (26.Ng5 Kg8 27.Ne6 Qe7 28.Nf8 Rf8+-) 26...Bh4 27.Rg7 Kh8 28.Nf1 Bc8 (28...Bg3 29.R7g3 fg3 30.Ng3+- (30.Kg3?! Rf4 31.Kh2 Qh4+=)) 29.Qe2 f3 (29...Bg3 30.Ng3 f3+-) 30.Qe3 Qf6 (30...Rf6 31.R1g6 Rg6 32.Rg6 Qf8 33.Rh6 Kg8 34.Rh4 Qf6+-) 31.R7g6 (31.R7g6 Qf4 32.Qf4 Bg3 33.R1g3 Rf7 34.Qh4 Rh7 35.Rg8) 1-0. opperwezen (2770) - Kingscrusher_YouTube (2325), lichess.org, 2017.

6.d3 Be6 7.Nd2 Nc6 8.Ngf3 Re8 9.Be2 Bf8 10.0-0 g6 11.Rc1 Bg7 12.Qc2 Nd7 13.Rfe1 f6 14.d4 White plans c5 14...Bf5 15.e4 Bg4 16.d5 Ne7 17.c5 Rc8 18.Qb3 b6 19.Ba6 (19.c6 Nf8+-) 19...Rb8? (better 19...bc5 20.Bc8 Qc8+/-) 20.cd6+- cd6 21.Bb5 (21.Nc4 Nc8 22.Bc8 Rc8 23.Nd6 Rc1 24.Rc1 Rf8+-) 21...Rf8 22.Nc4 Bf3 23.Qf3 f5 24.Nd6 fe4? (24...Nc5 25.Ne8 Re8 26.Be8 Ne4+-) 25.Qe4 Nf6 (25...Rf2 26.Bd7 Rf4 27.Be6 Kf8 28.Qe5 Be5 29.Be5 g5+-) 26.Qe5 Nh5 (26...Ned5 27.Bc4 Kh8+-) 27.Qe6 Kh8 28.Bg7 Ng7 (28...Kg7 29.Qe7 Qe7 30.Re7 Kg8 31.Rcc7+-) 29.Qe7 (29.Qe7 Qe7 30.Re7+-) 1-0. maticzeljko5 (2280) - bigwh (2155), Rated Blitz game, lichess.org, 2015. (=1.c4 A20: English Opening: 1...e5 1...e5 2.e3 Nf6 3.a3 d6 4.b4 Be7 5.Bb2 0-0)

6.d3 Bf5 7.Nd2 Nbd7 (7...Re8 8.Qf3 Bc8 9.Ne2=+) 8.Ngf3 (8.Qf3 Be6 9.Qb7 a5=) 8...a5 9.b5 c6 10.bc6 bc6 11.Be2 Nc5 12.0-0 (12.d4 Rb8 13.Ra2 ed4 14.Nd4 Bd7=) 12...Rb8 (12...Nd3 13.Qc2 Nb2 14.Qf5-/+) 13.Bc3 Nce4?? (better 13...Bd3 14.Bd3 Nd3=+) 14.Qe1?? (14.de4 Ne4 15.Ne4 Be4+-) 14...Ng5 (better 14...Nc3 15.Rc1 Ne2 16.Qe2 Qd7-+) 15.Ng5+- Ne4 (15...Ng4 16.Nge4 Qc7+-) 16.de4. opperwezen (2680) - TwelveTeen (2755), lichess.org, 2018.

6.d3 Bf5 7.Nd2 Nbd7 (7...a5 8.b5=+) 8.Ngf3 (8.Qf3 Be6 9.Qb7 a5=) 8...Bg6 (8...a5 9.Be2=) 9.Be2 a5 10.0-0 ab4 11.ab4 Ra1 12.Ba1 h5 13.Nh4 Ne4 1-0. opperwezen (2795) - JannLee (2740), lichess.org, 2019. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 Be7 5.c4 0-0)

6.Bd3 e4 7.Bc2 Be6 8.Nc3 Bc4 9.Ne4 Nc6 10.Rc1 Ne4 11.Qg4 Nf6 12.Qc4 d5 13.Qd3 d4 14.e4 Re8+= 15.Qc4 Bd6= 16.d3 Ng4 17.Nf3= Qf6 18.h3 Nce5–/+ 19.Ne5?? Qf2 20.Kd1 Ne3 (20...Ne5?! 21.Qd4 Qg2 22.Qg1 Qf3 23.Kd2–/+) 0–1. Punsaem,Gap – Dahmen,Christoph, NRW–ch U16 Bergneustadt, 2001.

6.d4 Nbd7 7.Nc3 c6 8.Nf3= e4 9.Nd2 d5 10.Be2 a5 11.b5 cb5 12.cd5 b4 13.Nce4 Nd5 14.ab4 Bb4 15.Ba3 N7f6 16.Bb4 Nb4 17.0-0 Ne4 18.Ne4 b6 19.Nc3 Bb7 20.e4 Rc8 21.Qd2 Qh4 22.Rfe1 f5 23.e5 Rfd8 24.Red1 f4 25.Rac1 f3 26.g3 Qg4 27.Bf1 Rc7 28.Nb5 Rcd7 29.Nd6 Bd5 30.Rc3 Rf8 ½–½. Mosshammer,Michael – Pooley,Mark C (1885), ICCF FM/0202, 2006.

6.d4 Nbd7 7.Nd2 b6 8.de5 de5 9.Qc2 Bb7 10.Ngf3= Bd6 11.Be2 c5=+ 12.bc5 bc5 13.Rb1= Qe7 14.Nb3?? Be4–+ 15.Bd3 Bd3 16.Qd3 e4 17.Bf6 Nf6 18.Qc3 ef3 19.gf3 Be5 20.Qc2 a5 21.h4 a4 22.Nd2 Bc7 23.h5 h6 24.Rg1 Qe5 25.Ke2 Nh5 26.Rg4 Nf6 27.Rh4 Qg5 28.Rhh1 Qg6 29.Ne4 Ne4 30.fe4 Qg4 31.Kf1 Be5 32.Rg1 Qh3 33.Ke2 Rab8 34.Rb5 Rb5 35.cb5 Qh5 36.Ke1 Bf6 37.Qa4 Bc3 38.Kf1 Rd8 39.Kg2 Qg4 40.Kh2 Be5 41.Rg3 Qg3 (42.fg3 h5+-; 41...Bg3 42.Kg1 Bf2 43.Kf1 Rd2 44.Qa8 Kh7 45.Qh8 Kh8 46.b6 Qh3#) 0–1. Sanchirico,Antonio – Fragni,Enrico, ITA op Italy, 1993.

6.d4 Nbd7 7.de5 Ne5 8.Be5 de5 9.Qd8 Rd8 10.Nd2 Bf5 11.0-0-0? Ne4 12.Ne4=+ Be4 13.f3 Bg6 14.e4 f5 15.Bd3 Bg5 16.Kc2 fe4 17.fe4 Rd4?? 18.Nf3+- Bf6 19.Nd4 ed4 20.g3 Be5 21.Rdf1 Be8 22.Rf5 Ba4 23.Kd2 Re8 24.b5 a6 25.ba6 ba6 26.Rb1 Bd7 27.Rf2 Bc6 28.Re2 Rf8 29.a4! h5 30.a5 h4 31.gh4 Bf4 32.Kc2 Ba4 33.Kb2 Rb8 34.Ka3 Bd6?? 35.Ka2 Rf8 36.e5 Be7 37.h5 Rf3 38.Be4 Rf8?? 39.Bd5 Kh7 40.Rb7 c6 41.Re7 cd5 42.cd5 d3 43.Rd2 Bc2 44.Kb2 Rb8 45.Kc3 Rb3 46.Kd4 Rb4 47.Ke3 1–0. amator111 (1735) – szybkistan, kurnik, 2011.

6.d4 e4 7.Nc3 Bf5 8.Nge2 Nbd7 9.Ng3+= Bg6 10.Qe2 c5 11.Qd2 a5 12.b5 Nb6 13.d5 Re8 14.Be2 Bf8 15.0-0 Nfd7 16.Rac1 f5 17.f3 Ne5= 18.Nd1 Na4 19.fe4 Nb2 20.ef5 Nd1 21.fg6 Nc4 22.gh7 Kh8 23.Rc4 Ne3 24.Rf8! Rf8 25.Qe3 Qf6 26.Bd3 Rae8 27.Ne4 Qa1 28.Qc1 Qa2 29.h3 Rd8 30.Rc5! dc5 31.Qc5 Qa1 32.Kh2–/+ Qe5 (32...Qe5 33.Kg1 Qd5–+; 32...Kh7?! 33.d6 g6 34.Qc7 Kg8 35.Qa5 Qe5 36.Kh1=+) 0–1. Van den Braak,Jelle – Unger, corr 3GMM–16, 1995.

6.d4 Bg4 7.Be2 Be2 8.Ne2 Nfd7 9.0-0 f5 (9...Re8 10.Nd2+=) 10.f4 (better is 10.de5!? Ne5 11.Qd5 Rf7 12.Qb7+/-) 10...e4+= 11.d5 c5 12.Qe1 Bh4 13.Ng3 a6 14.Nd2 b5 15.Rc1 cb4 16.ab4 a5 17.cb5 ab4 18.Nb3 Qb6 19.Nd4 (19.Rc4!?=) 19...Nc5–/+ 20.Qe2 Nd3?? (20...Bg3 21.hg3 Qb7 22.Ne6 Ne6 23.de6=) 21.Rcd1?? (21.Ndf5 Nc1 22.Qg4+-) 21...Ra2–/+ 22.Rd2 Nd7 (22...Bg3 23.hg3 Rf7–/+ (23...Nb2?! 24.Rb2 Rb2 25.Qb2=)) 23.Ngf5= Bf6 24.Rb1 Rfa8 25.Qg4 Rb2 (25...R8a7!?+=) 26.Rdb2+- Nb2 27.Nh6 (27.Rb2?! Ra1 28.Kf2 Kh8+/-) 27...Kf8 28.Qd7 gh6 29.Qh7?? (better is 29.Qf5 Kg7 30.Ne6 Kg8 31.Qf6 Qe3 32.Kh1+-) 29...Bd4–/+ 30.Qf5? (better is 30.ed4 Qd4 31.Kh1–/+) 30...Kg7–+ 31.Qe4? (31.ed4 Qd4 32.Kh1–+) 31...Be3 32.Kh1 Qd4 33.Qe7 Kh8 34.f5 (34.Qd6 Bf4 35.Qe6 Nd1–+) 34...Bg5 (better is 34...Nd3 35.f6 Nf2 36.Kg1 Ng4 37.Kh1 Qf6 38.Qf6 Nf6–+) 35.Qd6 (35.Qb7 Rg8 36.Qa6–+) 35...Nd3 36.Qg3 Nf2 37.Kg1 Ne4 0–1. Van Lit,Mats – Maris,Ivo, NED–ch U12 Rijswijk, 2007.

6.Be2 b6 7.Nf3 Bb7 8.0-0 Nbd7 9.d4 ed4 10.Nd4 Rb8 11.Bf3 Ne8?? 12.Bb7+- Rb7 13.Nc6 Qa8 14.Ne7 Kh8 15.Nf5 Ndf6 16.Nd2 Qc8 17.Ng3 Rb8 18.Nde4 Ne4 19.Ne4 Qe6 20.Qd5 Qd5 21.cd5 f6 22.Ng3 Kg8 23.Rac1 Rf7 24.Rc2 Rd7 25.Rfc1 Kf7 26.Ne2 h6 27.Nd4 Rb7 28.b5 g6 29.a4 Ng7 30.g4 h5 31.h3 hg4 32.hg4 g5 33.Kg2 Kg6 34.f4 gf4 35.ef4 Re7 36.Kf3 Kf7 37.Nc6 Rd7 38.f5 Ne8 39.Re2 Ng7 40.Rce1 a5 41.Re7 Re7 42.Re7 Kf8 43.Bf6 Ne8 44.Bc3 Nf6 45.Bf6 Kg8 46.Bc3 Kf8 47.g5 Kg8 48.g6 Kf8 49.g7 Kg8 50.Re8 Kf7 51.g8R Ra7 52.Ref8 (52.Rgf8) 1–0. ludice (1725) – wacek2244, kurnik, 2011.

6.Be2 c6 7.Nf3 a5 8.0-0 ab4 9.ab4 Ra1 10.Ba1 Bg4 11.d3 Nbd7 12.h3 Bh5 13.Nbd2 Re8 14.g4+/- e4 15.de4 Bg6 16.e5 Ne5 17.Ne5 de5=+ 18.c5 Nd5 19.Qb3 Nf4 20.ef4=+ Qd2 21.Qe3 Qe3 22.fe3+= ef4 23.ef4 f6 24.Bc4 Bf7 25.Bf7 Kf7 26.Rd1 Ra8 27.Bc3 Ra3 28.Rd3 Ke8 29.f5 Bd8 30.Kg2 Bc7= 31.Re3 Be5=+ 32.Bd2 Re3 33.Be3 Bc3 34.Kf3 Bb4 35.h4 Be1 36.h5 Bc3 37.Ke4 Ba5 38.h6 gh6 39.Bh6 b6 40.cb6 Bb6 41.Bd2 Bf2 42.Bc3 Bh4 43.Kd4 Kd7 44.Kc5 Bf2 45.Kc4 Ke7 46.Bb4 Kd7 47.Bc3= Bh4 48.Bd4 Kd6–/+ 49.Bc3 Bg5 50.Bd4 Bh4 51.Bc3 Bg5 52.Bd4 Bh4 53.Bc3= Bg5 ½–½. Moraes,Maurino – Amorim,Lucio, Indaial JASC op, 2004.

6.Be2 Nc6 7.Nf3 e4 8.Nd4 Ne5 9.d3 c5 10.bc5? ed3–+ 11.Bd3 dc5 12.Ne2?? Nd3 13.Kf1 Nb2 14.Qd8 Rd8 15.Nbc3 Nc4 16.Ng3 Rd3 17.Ke2 Rc3 0–1. Fournier,Frederic (2325) – Pradito Rybka 2.3.2a mp (2435), Active (1+0), 2008.

6.Be2 Bd7 7.d4 ed4 8.Qd4 =.

6.Be2 Nbd7 7.d4 ed4 8.ed4 Nb6 9.Nd2 Bd7 10.Ngf3 Na4 11.Ra2 d5 12.Ba1 dc4 13.Nc4 Nd5 14.Qc2 Nf4 15.0-0 Ne2 16.Qe2 Re8 17.Nfe5 Be6 18.Rd2 c6 19.b5 Rc8 20.bc6 bc6 21.Ne3 f6 22.N5c4 Nb6 23.Qd3 Nc4 24.Nc4 Qd5 25.Ne3 Qh5 26.h3 Bd6 27.Rb1 (27.Re1 Qg5-/+) 27...Qg5-/+ 28.Kf1 Qf4 29.Re2 (29.a4 Qh2 30.Ke1 Bd5-+) 29...Qh2-+ 30.Ke1 Bd5 31.Kd2 Bg2 0-1. PeterRs (2460) - dewil (2660), ChessWorld.net, 2010.

6.Be2 Nbd7 7.Nf3 e4=+ 8.Nd4 Ne5 9.h3 c5 10.bc5=+ dc5 11.Nf5 Bf5 12.Be5 Bd6 13.Bb2 Qe7 14.0-0 Rad8 15.f3 Be5 16.Nc3 ef3–/+ 17.Rf3 Be4 18.Ne4 Ne4 19.d4 Rfe8 20.Qa4? Bb8 21.d5 Qd6 22.g3 Qh6 23.Qd1 Ng5 24.h4 Nf3 25.Bf3 Bg3 26.Qd2 Re3 27.h5 Qg5 28.Qg2 Rde8 29.Rf1 Re1 (30.Bc3 Qe3 31.Kh1 Qc3 32.Qg3 Rf1 33.Kh2 Rf3 34.Qf2 Rf2 35.Kg1 Qe1) 0–1. Zaunerciks,Ilmars (1815) – Speisser,Patrick (2120), IECG, 2004.

6.Be2 Re8 7.Nc3= Bf8 8.Qc2 Nc6 (8...a5 9.b5=) 9.b5 Ne7 10.Nf3 Bf5 11.d3 Qd7 12.a4 Ng6 13.e4 (13.0-0 Be7+=) 13...Bg4= 14.h3 Bf3 15.Bf3 Nh4 16.Qe2 c6 17.0-0 Be7 18.Rfe1 (18.Bc1 Bd8=) 18...Bd8 19.a5 a6 20.b6 Be7 21.Qd1 Rad8 22.Re3 Bf8 23.Be2 d5 24.Rg3 (24.cd5 cd5 25.ed5 Nd5 26.Nd5 Qd5 27.Re4 Ng2 28.Bf3+= (worse is 28.Kg2 f5 29.Bf3 fe4 30.Be4 Qf7–/+)) 24...dc4 25.dc4 Qe6 (25...Qd1 26.Rd1 Rd1 27.Nd1–/+) 26.Qc2 Ng6 27.Na4 (27.Bf3 Bc5+=) 27...Bb4–/+ 28.Qb3 (28.Bd3 Nh5 29.Re3 Ngf4–/+) 28...Qe7 29.Bc3 (29.Bd3 Nh5 30.Rg4 Nhf4–/+) 29...Bc3 30.Nc3 Rd4 31.Re3 Nf4 32.f3? (32.Kh2 Red8–+) 32...Qc5 (32...N6h5 33.Bf1 Nh3 34.Kh2 Qh4–+) 33.Bf1?? (better is 33.Qa3 Qa3 34.Ra3–/+) 33...Rd3–+ 34.Bd3 (34.Rae1 Re3 35.Na4 Rb3 36.Nc5 Ra3 37.Nb7 Rb8–+) 34...Qe3 35.Kh2 Qd3 36.Ra2 (36.Rd1 Qe3 37.Qc2 h5–+) 36...h5 (36...Rd8 37.Qc2–+) 37.Qb4 (37.Rb2 Rd8–+) 37...h4 38.Na4 Qf1 39.Qd6 (39.Qb2 N6h5 40.Qf2 Qc4–+) 39...N6h5 40.Qd7 Ng3 0–1. Dos Anjos,Diovana Ferreira – Dias,Anderson Tatsch (2210), Curitiba BRA, Terzian Mem, 2014.

6.Nf3 a5 7.b5 Nbd7 8.Nc3 Nc5 9.a4 Ne6 10.d4 e4 11.Nd2 d5 12.c5 c6 13.b6 Ne8 14.Nb3 f5 15.Qc2 f4 16.0-0-0 fe3 17.fe3 Bg5 18.Re1 Bh6 19.Kb1 Nf6 20.h3 Ng5 21.g4 Nf3 22.Re2 g6 23.Bg2 Bg7 24.Bf3 ef3 25.Rf2 Ne8 26.Rhf1 Qf6 27.Rf3 Qf3 28.Rf3 Rf3 29.Nd2 Rf2 30.e4 Bd4 31.ed5 cd5 32.Nd5 Bb2 33.Qb2 Be6 34.Ne7 Kf8 35.Qd4 Rd2 36.Ng6 hg6 37.Qd2 Ke7 38.Qg5 Nf6 39.Qe5 Rg8 40.g5 Nd7 41.Qd6 Kf7 42.h4 Re8 43.c6 bc6 44.Qc6 Rb8 45.b7 Ke7 46.Qc7 Ke8 47.Kc1 Bd5 48.Kd2 Rb7 49.Qc8 Ke7 50.Qc3 Rb2 51.Qb2 Be6 52.Qg7 Kd6 53.Qg6 Ne5 54.Qf6 Nc4 55.Kc3 Ne5 0-1. James_Flynn (2160) - Le_Truand (2370), Rated Bullet game, lichess.org.

6.Nf3 a5 7.b5 e4 8.Nd4 Bg4 9.Qc2 c5 10.bc6 bc6 11.Nc3 d5 12.cd5 cd5 13.Bb5 Bd7 14.a4 Bc5 15.Nd5? (better is 15.Nb3!? Bd6 16.d3 Bb5 17.ab5=) 15...Bd4–+ (worse is 15...Nd5 16.Qc5 Qg5 17.Bf1+=) 16.Nf6 Bf6 17.Bf6 Qf6 (17...gf6?! 18.Qe4 Na6 19.d4+=) 18.0-0 Bf5 19.Qc7 Rc8 20.Qg3 Rc2 21.Rac1 Rd2 22.Rc7 Qd6 23.Qd6 Rd6 24.Rfc1 h6 25.Re7 Nd7 26.h3 Kf8 27.Bd7 Rd7 (27...Ke7?! 28.Bf5 Rb8 29.Rc7 Kf8 30.Be4–/+) 28.Re5 Bg6 29.g4 f6 30.Rb5 Ke7 31.Rcc5 Rda7 32.Rb6 Be8 33.Rc4 Bg6 34.Kh2?? (34.Rc5 Bf7 35.Kg2–+) 34...Rd8–+ 35.Kg3 Rd5 36.h4 Bh7 37.Rc8 Rd2 (37...h5!? 38.Rcb8–+) 38.Rbb8 Bg6 39.Rg8 Ke6 40.Rb6? (better is 40.h5!? Bf7 41.Rg7–/+) 40...Kf7 41.Rbb8 h5 42.Rbe8 Re7 43.Ra8 hg4 44.Rgf8 Ke6 45.Ra6 Kd7?? (better is 45...Rd6 46.Ra5 Bf5–+) 46.Ra7= Ke6 47.Ra5?? Re8 48.Ra6 Rd6 49.Re8 Be8 50.Ra7 f5 51.Rg7 Ba4 52.h5 Ke5 53.Kh4 Bb3 54.Kg5 Rd2 55.h6 Rf2 56.h7 Rh2 57.Re7 Kd6 58.Rg7 Be6 59.Kg6 g3 60.Rg8 g2 0–1. combijack (1770) – simonfox (1770), gameknot.com, 2012.

6.Nf3 a5 7.b5 Bg4 8.Be2 Nbd7 9.0-0 e4 10.Nd4 Be2 11.Ne2 Nc5 12.a4 Nd3=+ 13.Bc3 d5 14.cd5 Nd5 15.Bd4 Bf6 16.Bf6 Qf6 17.Nbc3 Qe5 18.Nd5 Qd5 19.Nc3 Qe5 20.Qe2 Rfd8 21.f3= Nc5 22.fe4 Ne4 23.Ne4 Qe4 24.Rf4 Qc2 25.Rf2 Rd7 26.d4 Qc3 27.Qe1 Qe1 28.Re1 Re8 29.Rfe2 f5 30.g3 Kf7 31.Kf2 Ke6 32.Rc1 Kd6 33.Rc5 g6 34.h3 Re4 35.Kf3 Rde7 36.Rc3 g5= 37.Rc5 f4 38.Rg5 fe3 39.Rh5 Rd4–/+ 40.Re3 Rf7 41.Ke2 Ra4 42.Rd3 Ke7 43.Rc3 Ra2 44.Ke3 Kd8 45.Rd3 Ke8 46.Rhd5 Re7 47.Kf3 a4 48.Rd8 Kf7 49.Rb8 b6 50.Rbd8 a3 51.Ra8 Rb2 52.Raa3 Rb5 53.Rd4 Rf5 54.Kg4 Rf6 55.h4 c5 56.Rc4 Rc7 57.Rb3 Ke7 58.h5 Kd7 59.Kg5 Rd6 60.g4 Kc6 61.Kf5 b5 62.Re4 Rf7 63.Kg5 c4 64.Rc3 Kc5 65.Kh4 Rd4 66.Re8 Rc7 67.Rce3 b4 68.h6 c3 69.R8e7 Rdd7 70.R3e5 Kc4 71.Re4 Kb3 72.R7e5 c2 73.Re3 Rc3 74.Re1 Rd1 75.g5 c1Q 76.R1e4 Rc4 77.Kh5 Rh1 78.Kg4 Re4 79.Re4–+ Rg1 (79...Rg1 80.Kf3 Qf1 81.Ke3 Rg3 82.Kd4 Qd3 83.Ke5 Rg5 84.Kf6 Rg6 85.Ke7 Qe4 86.Kf8 Rf6 87.Kg7 Qg6 88.Kh8 Rf8#) 0–1. Krc,Milan (1880) – Svihel,Karel (2155), Brno Trade op–A, 2005.

6.Nf3 a6 7.Nc3 Nfd7 8.Be2 c5 9.b5 ab5 10.cb5 f5 11.0-0 Nf6 12.h3 Nbd7 13.a4 Nb6 14.d3 Nbd5 15.Nd5 Nd5+= 16.Rc1 Be6=+ 17.d4 e4 18.Nd2 cd4 19.Bd4 Nf6 20.Bc4 Bc4 21.Nc4+= f4 22.ef4 Nd5 23.g3 Qd7 24.Kh2 Bf6? 25.Bf6+- Nf6 26.Qd6 Qd6 27.Nd6+- Ra4 28.Nb7 Rb4 29.Rb1 Rb1 30.Rb1 Nd5 31.Nd6 e3 32.fe3 Ne3 33.b6 Nd5 34.b7 Rb8 35.Rc1 Ne7 36.Rc8 Nc8 37.bc8Q Rc8 38.Nc8 Kf7 39.Kg2 Ke6 40.Kf3 Kd7 41.Nb6 Ke6 42.Nc4 g6 43.Ne5 Kf6 44.Kg4 h5 45.Kh4 Kf5 46.Nf3 Ke4 47.Ng5 Kf5 48.Nh7 Ke4 49.Kg5 Kf3 50.Kg6 Kg3 51.Kh5 Kf4 52.Kh6 Kg3 53.Kg7 Kh3= ½–½. erisonpassos – dhesy, kurnik, 2011.

6.Nf3 a6 7.d4 e4 8.Nfd2 c6 9.Nc3 d5 10.Qb3 Be6 11.Rc1 Nbd7 12.Be2 Rc8 13.0-0 Bd6 14.Rc2 Bb8 15.Rfc1 Qc7 16.g3 h5 17.cd5 cd5?? 18.Na4+- Qd6 19.Nc5 h4? 20.Nb7+- Qe7?? 21.Nc5 hg3 22.fg3 Nc5 23.Rc5 Nh7? 24.Rc8+- Rc8 25.Rc8 Bc8 26.Qd5 Bb7 27.Qc5 Bd6 28.Qc3 Ng5 29.Bf1 Qf6 30.Bg2 Nf3 31.Kh1 Ne1?? 32.Kg1 Qg5?? 33.Ne4 Be4 34.Be4 Bg3 35.hg3 Qg3+- 36.Kf1 g6 37.Qe1 Qh3 38.Ke2 Qh2 39.Qf2 Qh5 40.Kd3 Qb5 41.Kd2 Qc4 42.Bd3 Qa2 43.Kc2 Qd5 44.e4 Qc6 45.Kb1 Qa4 46.d5 Qd1 47.Ka2 Qa4 48.Qf6 Kf8 49.d6 Qe8 50.Qg7 1–0. futsalboy (1660) – kosova1974 (1680), kurnik, 2011.

6.Nf3 b6 7.Nc3 Nbd7 8.d3 Bb7 9.e4 a5 10.Be2 Nb8 11.Nd5 Nc6 12.b5+= Nb8 13.a4 Nbd7 14.Ne7 Qe7 15.Ba3 h6 16.h3 Rfd8 17.Qc2 Nf8 18.0-0 Ng6 19.Bc1 Nd7 20.Be3 Nc5 21.Nd2 Ne6 22.g3 Bc8 23.Kh2 Ng5 24.Bg4 Ne6 25.Nb3 Nc5 26.Bc8 Rac8 27.f4 ef4 28.Bf4 Nf4 29.Rf4 Ne6 30.Rf2 ½–½. Buck,Klaus Michael (1705) – Zanger,Konrad (1800), EU–chT Seniors, 2007.

6.Nf3 c5 7.Be2 Be6 8.b5 a6=+ 9.a4 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Bc3 Qa2 13.0-0? Bc4–/+ 14.Bc4 Qc4 15.Qc2 Qb5–+ 16.d3 Nc6 17.Nbd2 d5 18.Rb1 Qa6 19.Qb3? Rb8 20.Ne5–/+ Ne5 21.Be5= Bd6 22.Bd6?? Qd6–/+ 23.Nf3 b5 24.Qc2 b4 25.h3 c4 26.dc4=+ dc4 27.Qc4 Qb6 28.Nd4 b3 29.Rb3+/- Qa7 30.Rb8 Qb8 31.Qb5 Qc8 32.Qc6 Qb8 33.g3 h6 34.Kg2 Kh7 35.h4 h5 36.Qf3 Qe8 37.Qf5 Kg8 38.Nf3 Qa8 39.Kh3 Qc6 40.Kg2 Qb7 41.Kh2 Qc6 42.Kg2 Qb7 43.Kh2 Qc6 44.Kg2 ½–½. Fournier,Frederic (1870) – juanym (1675), Active (1/1), 2005.

6.Nf3 Nbd7 7.d4 Re8 8.Be2. Fournier,Frederic (2005) – claudehougton (1970), Active, 2004.

6.Nf3 Nbd7 7.Be2 Nb6 8.d4 ed4 9.Bd4 Be6 10.Nbd2 c5 11.bc5 dc5 12.Bc3 Rc8 13.0-0 Kh8 14.Qc2 Qc7 15.Rfd1 Rfd8 16.h3 Nbd7 17.Rab1 Nf8 18.Qb3 b6 19.a4 Ng6 20.Ra1 Ng8 21.a5 ba5? 22.Ba5+- Qc6 23.Bd8 Rd8 24.Ra7 Qd6 25.Raa1 Bf6 26.Rac1 Rb8 27.Qc2 Qc6 28.Nf1 Rb2 29.Qd3 N6e7 30.Qd6?? Re2= 31.Qc6 Nc6 32.Ng3 Rb2 33.Rd6 Nb4 34.Ne4 Be5?? 35.Ne5+- (35.Ne5 g6 36.Nc5+-) 1–0. Fournier,Frederic (1785) – ederlon16, Active, 2011.

6.Nf3 Ne4 7.d3 Ng5 8.Nbd2 Nf3 9.Nf3 Bg4 10.Be2 Nd7 11.h3 Be6 12.0-0 a6 13.Rc1 f5 14.e4 f4 15.d4+= b6 16.de5+/- de5 17.Ne5 f3 18.Bf3+- Qe8 19.Nd7 Bd7 20.Qc2?? Bg5?? 21.Rcd1 Bf4? 22.Qc3+- Bh6 23.Qd3 Rd8 24.Qc3 Qg6?? 25.g4 Qg5 26.Bc1 Qh4 27.Bh6 Qh6 28.Kg2 Qg5 29.Rd5 Qf4 30.Rfd1 Rf7 31.Qe5?? Qh6 32.Rd7!+- Rfd7 33.Rd7 Rd7 34.Qe8 1–0. Fournier,Frederic – nemo113, Active (3/0), 2005.

6.Nf3 Ne4 7.Be2 a5 8.d3 Ng5 9.Nbd2 ab4 10.ab4 Ra1 11.Qa1 f5 12.0-0 Nd7 13.Rc1 Nf3 14.Bf3 g5 15.c5 Nf6 16.cd6 cd6 17.Qa7 b5? 18.Rc7?? Bd7 19.g3 Qe8 20.Nb3 Bd8 21.Rb7 Qe6 22.Na5 Qa2 23.Rd7 Qb2 24.Rg7 Kh8+= 25.Rg5 Ne8 26.Rh5 Ng7 27.Rh6 e4 28.Bh5 Bg5–/+ 29.Rd6 Nh5 30.Qd7 Nf6 31.Qa7 Qe2 32.Qd4 Kg8 33.Nc6?? Ng4–+ (34.Qd5 Kh8 35.Qe5 Ne5 36.Ne5 Ra8 37.de4 Ra2–+) 0–1. Ganchev,Georgi (2330) – Janev,Evgeni, Plovdiv op, 1988.

6.Nf3 Re8 7.d3 Nbd7 8.Be2 Nf8 9.Nbd2 Ng6 10.0-0 c6 11.e4 Qc7 12.Re1 Bd7 13.Rc1 Rad8 14.Qc2 Qb8 15.Bf1 h6 16.d4 ed4 17.Bd4 Nf4 18.g3 Ng6 19.Qb2 Bg4 20.e5 de5 21.Ne5 Ne5 22.Be5 Qc8 23.Ne4 (23.Bg2 Bh3=) 23...Ne4+= 24.Re4 f6 25.Bc3 Bf5 26.Re3 Bd6 27.Re8 Re8 28.Re1 Re1 29.Be1 Qe6 30.Bc3 b6 31.Qe2 Qd7 32.Qe3 c5 33.b5 Qe7 34.Qe7 Be7 35.f4 Kf7 36.Kf2 Ke6 37.Ke3 Bd6 38.h4 g5 39.hg5 hg5 40.Be2 gf4 41.gf4 Bf8 42.Bf3 Bb1 43.Be2 Be7 44.Bg4 f5 45.Be2 Bd6 46.Bf3 Ba2 47.Be2 Bb1 48.Bf3 ½–½. Fournier,Frederic (1785) – evskiy (2265), ChessOK.com, 2012.

6.Nf3 h6 7.d3 Bg4 8.Be2 e4 9.de4+/- Ne4 10.Nbd2 Nd2 11.Qd2 Bf3 12.Bf3 Bf6? 13.0-0?? Nd7 14.Bb7+- Rb8 15.Bc6 Bb2 16.Qb2 Nf6 17.Rad1 Rb6 18.Bf3 a5 19.c5 Rb8 20.cd6 cd6 21.Rd4 ab4 22.ab4 Rb6 23.Rfd1 Qc7 24.b5 Rfb8 25.Qb4 Rb5 26.Qd6 Qd6 27.Rd6 Rb1 28.g3 Rd1 29.Rd1 Nh7 30.h4 Nf6 31.Kg2 g5 32.hg5 hg5 33.Rd6 Kg7 34.Ra6 Ne8 35.Ra5 f6 36.Bh5 Nd6 37.Ra7 Kh6 38.Bf3 Nc4 39.Ra6 Rf8 40.Kf1 Ne5 41.Ke2 Nf3 42.Kf3 Kh5 43.g4 Kh4?? 44.Ra1 f5 45.Rh1 1–0. Fournier,Frederic (1930) – llorente, Owl21.com, 2009.

6.Nf3 h6 7.Be2 Bg4 8.0-0 Bf3 9.Bf3 c6 10.d3 a6 11.Nd2 Nbd7 12.Ne4 Ne4 13.Be4 Nf6 14.Bf3 Nh7 15.g3 Bg5 16.Bg2 f5 17.d4 e4 18.d5 c5 19.bc5 dc5 20.Rb1 b6 21.a4 Rb8 22.Qc2 a5 23.Bc3 Bf6+= 24.Rb3 Bc3 25.Qc3 Qf6 26.Qf6 Nf6 27.Rfb1 Nd7 28.Bf1 Rb7 29.Be2 Rfb8 30.h4 Nf6 31.Kg2 Ne8 32.Bh5 Nd6+= 33.Be2 Kf7 34.f3 Kf6 35.f4 g5 36.hg5 hg5 37.Rh1 gf4 38.gf4 Kg7 39.Rbb1 Rh8 40.Rh8 Kh8 41.Rh1 Kg7 42.Rh5 Kg6 43.Rg5 Kf6 44.Kg3 Rg7 45.Rg7 Kg7 46.Kh4 Kh6 47.Kg3 Ne8 48.Kh4 Nf6 49.Kg3 Kg7 50.Kh4 Kh6 51.Bd1 Ne8= 52.Be2 Nd6 53.Bf1 Ne8 54.Bh3 Nd6 55.Bf5?? Nf5–+ 56.Kg4 Ne3 57.Kg3 Nc4 58.f5 Kg5 0–1. Fournier,Frederic (1730) – dan9, Active, 2007.

6.Nf3 h6 7.Be2 Bg4 8.d3 c6 9.Nbd2 Nbd7 10.0-0 Nh7 11.h3 Bh5 12.Nh2 Bg6 13.e4 f5 14.Bh5 Qe8 15.Bg6 Qg6 16.ef5 Qf5 17.Ne4 Ng5 18.Ng5 Bg5 19.Nf3 Bf4 20.Bc1 g5 21.Bf4 gf4 22.Nh4 Qg5 23.Qg4 Qg4 24.hg4 Kh7 25.f3 Rf6 26.Nf5 Rg8 27.Kf2 Nb6 28.a4 d5 29.c5 Nd7 30.Rae1 b6 31.cb6 ab6 32.a5 ba5 33.ba5 Nc5 34.d4? Nd3–/+ 35.Ke2 Ne1 36.Re1 e4 37.Ne7? Re8–+ 38.Nf5 h5 39.Kf2? e3 40.Kf1? hg4–+ 41.fg4 Kg6 42.Ra1? Kg5 43.a6 Kg4 44.Ng7 Ree6 45.Ne6+- Re6 46.a7 e2 47.Ke1 f3 48.gf3 Kf3 49.a8Q Rh6 50.Qf8 Ke3 51.Ra3 Kd4 52.Qf4 Kc5 53.Qh6 (53.Qh6 d4 54.Qf8 Kd5 55.Ra5 Kc4 56.Rc5 Kb4 57.Rc6 Kb5 58.Qc5 Ka4 59.Rb6 d3 60.Qb4; 53.Rc3 Kb5 54.Rb3 Ka5 55.Qd2 Ka4 56.Qb4) 1–0. Fournier,Frederic (1665) – boc (1715), Active, 2006.

6.g3 Be6 7.Bg2=+ Nbd7 8.Bb7 Rb8 9.Bg2 a5 10.b5 Bc4–+ 11.a4 Nc5 12.Bf1 Bb3 13.Qf3 Bd5 14.Bg2 Bf3 15.Nf3 Nd3 16.Ke2 Nb2 17.Nc3 Nc4 18.d3 Nb6 19.Rhc1 Qd7 20.Kf1 Nbd5 21.Nd5 Nd5 22.Kg1 Nb4 23.d4 Rfc8 24.de5 de5 25.Ne5 Qf5 26.Nc6 Nc6 27.Bc6 Rd8 28.Bd5 Rd5 29.Rc7 Rd2 30.f4 Qe4 (30...Qe4 31.Rc8 Rc8 32.Rb1 Qb1#) 0–1. lapinagile – bturner (2190), net–chess.com, 2008.

6.h3 a6 7.Nf3 Nc6 8.d4= ed4 9.Nd4 Be6 10.Nd2 Nd4 11.Bd4 c5 12.bc5 dc5 13.Bc3 Qc7 14.Nf3? Rfd8 15.Qc2= Qc6 16.Ng5 g6 17.Ne6 Qe6 18.Be2 Ne4 19.Ba5 Rd7 20.0-0 b6=+ 21.Be1 Bf6?? 22.Rd1?? Rd1=+ 23.Bd1 Nd6 24.Bf3= Rb8 25.Bd5 Qe5 26.Bd2 b5 27.Rb1 Nc4 28.Bc4 bc4 29.Rb8 Qb8 30.Qc4 Qb5 31.Qe4 c4?? 32.Bb4 c3?? 33.Qa8 Kg7 34.Qf8 1–0. thedesertfox (1940) – vampirella (2180), net–chess.com, 2004.

6.h3 Nbd7 7.Nc3= b6 8.Nf3 Bb7 9.Be2 e4 10.Nd4 c5 11.Nf5= cb4 12.ab4+= d5 13.cd5+/- Nd5 14.Nd5+- Bd5 15.Bg7 Re8 16.Bc3 Bg5 17.Bb5 Re5 18.Qg4 f6 19.Bd7 (19.Bd7 h5 20.Qh5 Qd7 21.Qg6 Kf8 22.Be5+-) 1–0. pierre – bojko, internet, 2011.

6.h3 Bf5 7.d4 Bb1 8.Rb1= c6 9.de5+/- de5 10.Be5 Qd1 11.Rd1 Na6 12.Nf3 Rfd8 13.Be2 Rd1 14.Bd1 b6 15.0-0 c5 16.b5 Nb8 17.Bc2 a6 18.Bb8 Rb8 19.ba6 Ra8 20.Ne5 Ra6+/- 21.Nc6 Kf8 22.a4 Ne4?? 23.Be4+- Ra4 24.Rb1 Ke8 25.Ne7 Ke7 26.Bd5 Rb4 27.Ra1 b5 28.cb5 Rb5 29.Ra7 Kd6 30.Bf7 Rb4 31.Ba2 c4 32.Bc4! Rc4 33.Rg7 Rc7 34.Rc7 Kc7 35.Kf1 Kd6 36.Ke2 Ke5 37.Kf3 h5 38.g4 h4 39.e4 Kf6 40.Kf4 Ke6 41.g5 Kf7 42.Kg4 Kg6 43.Kh4 Kf7 44.f4 Kg6 45.f5 Kg7 46.e5 Kf7 47.Kg4 Kf8 48.h4 Kg7 49.h5 Kh8 50.h6 Kh7 51.e6 Kh8 52.e7 Kh7 53.Kh5 Kh8 54.e8Q (54.e8Q Kh7 55.g6) 1–0. thedesertfox (1900) – mminaev (1795), net–chess.com, 2005.

6.h3 Bf5 7.Nf3 Bb1 8.Rb1= c5 9.bc5+= dc5 10.Ne5+/- b6 11.g3 Nbd7 12.Bg2 Rb8 13.0-0 Ne5 14.Be5 Bd6 15.Bd6 Qd6+/- 16.d4 cd4 17.Qd4 Qa3= 18.Ra1 Qe7 19.Ra2 Nd7?? 20.Ra7+- Qc5 21.Rd7 Qd4 22.Rd4 b5 23.c5 b4 24.Rb1 Rfc8 25.Rbb4 Rb4 26.c6 Rb1 27.Kh2 Rc1 28.Rd7 h6 29.Bd5 Rc2 30.Bf7 Kf8 31.Kg2 R8c6+= 32.Bd5 Rc7 33.Rc7 Rd2 (33...Rd2 34.e4 g6+-). thedesertfox (1920) – mminaev (1795), net–chess.com, 2005.

6.Nh3 b6 7.f4 Bh3 8.gh3 ef4 9.ef4 Ne4 10.Bg2 Bh4 11.Kf1 Nf2 12.Qf3 Qe7 13.Qa8 Nh1 14.Nc3 Nd7 15.Qf3 Nf2 16.Nd5 Qe6 17.Re1 Qg6 18.Ne7 Be7 19.Qf2 Bf6 20.d4 Qd3 21.Kg1 Qc4 22.Kh1 h6 23.Rg1 d5 24.Qg3 Kh7 25.Qg4 Nb8 26.Qf5 Kh8 27.Bd5 Qb5 28.a4 Qd7 29.Qe4 Re8 30.Qg2 Qf5 31.Bf3 Qf4 32.Bh5 Bd4 33.Bd4 Qd4 34.Bf7 Rf8 35.Qg6 Nd7 36.Be6 Nb8 37.a5 Nc6 38.ab6 ab6 39.Ba2 Ne7 40.Qg3 Qe4 41.Qg2 Qg2 42.Kg2 Rf4 43.Rc1 Rb4 44.Be6 c5 45.Kf3 g6 46.Re1 Kg7 47.Bd7 Nf5 48.Re6 Nd4 Normal 0-1. roshik85 (2190) - kapanadzeii (2185), Rated Classical game, lichess.org, 2016. (=1.c4 e5 2.e3 Nf6 3.a3 d6 4.b4 Be7 5.Bb2 0-0)

7.Bd3 Nbd7 8.Nf3= a5 9.Ng5 h6 10.Ne6 fe6 11.Nc3 ab4 12.ab4 d5 13.Ra8 Qa8 14.cd5 ed5 15.Bf5 c6 16.b5 Qb8 17.0-0 Qc7 18.Be6 Kh8 19.Nd5! Nd5 20.Bd5 c5 21.Ra1 b6 22.Qg6 Nf6 23.Bc4 Bd6 24.Ra6 Qd8? 25.Ra7 Be7 26.Be5 (26.Be5 Qe8 27.Qe8 Re8 28.Bf7+-) 1–0. Knorr,Bernd – Bedbur,Heinz, corr sok, 1997.

7.Nf3 a6 8.h3 (8.d4 e4 9.Ng5 Bf5=+) 8...c6 (8...e4 9.Nd4 Nc6 10.Ne6 fe6 11.d3=) 9.g4 (9.d4 e4 10.Ng5 Bf5=+) 9...e4 10.Nd4 d5 11.Qc3 (11.g5 Nfd7=+) 11...h6 (11...Nbd7 12.d3=+) 12.Be2 (12.d3 Qd7=+) 12...Ne8 13.d3 ed3 14.Bd3 Bf6 15.c5 b6 16.Nd2 bc5 17.Qc5+= Qd6 18.Qc2 Nd7 19.N2b3 Nc7 20.Rc1+/- Ne5 21.Na5 Nb5 22.Nac6+/- Rac8 23.Bb5 ab5+= 24.Ne6 fe6 25.Be5 Be5 26.Qc5 Rc7 27.Qd6 Bd6 28.Kd2 Rfc8?? 29.Na7 Rb8 30.Rc7 Bc7 31.Nc6 Rb6 32.Nd4 Be5+/- 33.Rb1 Bd4 34.ed4 Ra6 35.Rb3 Kf7 36.Rc3 Kf6 37.f4 g5 38.Ke3 Ra7 39.Kf3 Ra6 40.Kg3 Ra7 41.h4 gh4 42.Kh4 Kg6 43.g5 hg5 44.fg5 Rf7 45.Kg4 Rf5= 46.Rc5 Rg5 47.Kf3 Kf5 48.Rb5 Rg4 49.a4 Rd4 50.a5 Rd3 51.Ke2 Ra3 52.Rb8 Ke4= 53.Ra8 Ra2 54.Kf1 Rb2 55.Rb8 d4 56.Re8 Ke5 57.a6 d3 58.Ke1 Ra2 59.b5+= Kd4 60.Re6+/- d2 61.Ke2 Kc3 62.Rc6+- Kd4? 63.b6 Ra6 64.b7 d1Q 65.Kd1 Rc6 66.b8Q Kd5 67.Kd2 Rc5 68.Qb3 Kc6 69.Kd3 Rd5 70.Ke4 Rc5 71.Kd4 (71…Rc1 72.Qe6 Kb5 73.Qd5 Kb4 74.Qd6 Kb5 75.Qb8 Ka4 76.Qf4+-) 1–0. Kloke,Stephan – Kersting,Stefan, NRW holiday op U15, 1995.

7.Nf3 Qd7 8.Nc3= Nc6 9.Bd3 h6 10.h3 a6 11.g4 Ne8 12.Nd5 Bd8 13.Rg1 f5 14.g5 e4 15.gh6+= ef3 16.Bg7 Rf7 17.Bb2 Kh7 18.Qc3?? Ne5–+ 19.0-0-0 b5 20.Rg3? bc4 21.Bc4 Nf6 22.Nf6 Bf6 23.Be6 Qe6 24.d4 Nc4 25.Rf3 Nb2 26.Kb2 Qd5 27.Rg3? c5–+ 28.bc5 dc5 29.Rb1 cd4 30.Qb3 Rb7 31.Rg7 Bg7 32.hg7 (32.Qb7 Qb7 33.Ka2 Qf7 34.Ka1 de3 35.hg7 Qg7 36.Ka2 ef2 37.h4 Rb8 38.Rb8 f1Q 39.Rb1 Qc4 40.Rb3 Qgc3 41.Kb1 Q4b3#) 0–1. Bachofner,Stefan – Beereuter,Rene, Weihnachts op–B, 1999.

7.Nf3 Nbd7 8.Nc3 Nb6 9.d3 c6 10.Be2 Rc8 11.h4 Nbd7 12.Rd1 a6 13.Ng5 b5 14.d4 Bc4 15.Bc4 bc4 16.de5 de5 (better is 16...Ne5!? 17.Ne2 Nd3 18.Rd3 cd3 19.Qd3 g6=) 17.Nce4= Qc7 18.Rd7 Nd7 19.Nc5?? (better is 19.Nd6! g6 20.Nc8 Qc8 21.Ne4+=) 19...g6–+ 20.Nh7? (better is 20.Nd7 Qd7 21.Nf3–+) 20...Kh7 21.h5 Kg7?? (better is 21...Bc5 22.hg6 Kg7 23.Rh7 Kf6 24.bc5 Qa5 25.Bc3 Qa3–+) 22.Ne6= fe6 23.Qg6 Kh8 24.Qh6 Kg8 25.Qg6 Kh8 26.Qh6 Kg8 27.Qg6 Kh8 28.Qh6 Kg8 29.Qg6 Kh8 30.Qh6 Kg8 31.Qg6 Kh8 ½–½. combijack (1920) – aphgan (1660), gameknot.com, 2013.

7.Nf3 Nbd7 8.Ng5 c6 9.h4 Rc8 10.Nc3 h6 11.Be2 d5 12.0-0-0 (12.Ne6 fe6 13.g4 Nh7+=) 12...Qb6 (12...a5 13.Ne6 fe6 14.ba5 Qa5 15.g4 Ba3 16.g5–/+) 13.f4 e4 (13...ef4!? 14.Ne6 fe6 15.ef4 a5–/+) 14.Ne6= fe6 15.c5 Qc7 16.g4 Kh8 17.g5 Ng8 18.Bg4 a5 19.Be6 ab4 20.ab4 Ra8 21.Rdg1 b6 22.Nd5! cd5 23.Bd5 (better is 23.gh6 Nh6 24.Bg7 Kh7 25.Bd5 Nc5 26.bc5 (26.Be4?! Ne4 27.Qc7 Rfc8+-) 26...Qc5 27.Qc5 (27.Bf8?? Ra1 28.Kb2 Qa3) 27...bc5 28.Be4 Nf5 29.d3+-) 23...Rab8 (23...Bf6 24.gf6 Ngf6 25.Ba8 Ra8+-) 24.Qe4 (better is 24.gh6 Ngf6 25.hg7 Kh7 26.Be4 Kg8 27.Qb3 Rf7 28.Bg6+-) 24...bc5 (24...Ndf6 25.gh6 gh6+-) 25.Bg7 Kg7 26.gh6 Kh8 27.Qe7?? (27.h7 cb4 28.Kb1+/-) 27...cb4 28.Kd1 Ne7 29.Bb3 Nc5 30.Bc2 b3 31.Bb1 b2 32.Rg7 Nd5 33.Rhg1 Ne6 34.Rc7 Ndc7 35.f5 Nc5 36.Rg7 Nd5 0–1. combijack (1830) – thanchientranh (1775), gameknot.com, 2012.

7.Nf3 e4 8.Nd4 Nc6 9.Ne6 fe6 10.Nc3 =.

7.Nf3 g6 8.g3 Bg4 9.Bg2= e4 10.Ng5+/- h6 11.Ne4 Bf5 12.Qc3 Be4 13.Be4 Nbd7 14.Bb7+- Rb8 15.Bc6 Ne5 16.Ba4 Nf3 17.Ke2 Ne5 18.Bc2 Qc8 19.h3 Qb7+/- 20.Rf1 Qf3 21.Ke1 Nfd7? 22.d4+- Nc6 23.Nd2 Qg2 24.Be4 Qh3 25.Bc6 Nf6 26.Rh1 Qe6 27.Rh6 Kg7 28.Rh4 d5 29.cd5 Nd5 30.Bd5 Qd5 31.Re4 Rbe8 32.Re5 Qh1 33.Ke2 Qb7 34.Re7! Qb5 35.Qc4 Qh5 36.Nf3 Re7 37.d5 Kg8 38.Qh4 Qh4 39.Nh4 (39.Nh4 Rd7 40.Rh1+-) 1–0. Karlsen,Jan M – Ostmann,Jens O, Sandefjord MGP, 2003.

7.b5 c6 8.a4 Bf5 9.Nf3 h6 10.h3 c5 11.d3= b6 12.Ne5!+/- de5 13.Qf3 Nbd7 14.Qf5 Qc7 15.Be2 Ne8 16.Nd5 Qd6 17.0-0 Nef6 18.Bf3 Rad8 19.Ne7 Qe7 20.Bc6 g6 21.Qf3 Nb8 22.d4 Nc6 23.bc6 ed4 24.ed4 Ne4 25.dc5 bc5 26.Qe3 Rd2 27.Rab1 f5 28.Qh6 Qh7 29.Qf4 (29…Rdd8 30.Rfd1+-) 1–0. Schalkwijk,P – Spinks,L, IECC, 2001.

7.b5 c6 8.d4= ed4 9.Qd4 Nbd7 10.Na4 Nc5 11.Nc5= dc5 12.Qc3 cb5= 13.cb5 Bg4 14.Nf3 b6 15.Ne5 Be6+= 16.Nc6 Qc7 17.Bc4 Rae8 18.Be6 fe6 19.Rd1 Bd6 20.Qd3 Nd5+/- 21.e4 Bh2? 22.ed5 ed5+/- 23.Kf1 d4 24.Bc1 h6 25.Qg6 Bf4 26.Rh4 Be3 27.f3 Qf7 28.Qf7 Kf7 29.Rh5 Kf6+= 30.Rd5 (30...Bc1 31.Rc1=). Woelfelschneider,Peter – Schulz,Hans_Juergen, TT–16.03 ETC, 2005.

7.b5 c6 8.d4= ed4 9.Qd4 Nbd7 10.Rd1 Nc5 11.Nf3 Bf5 12.Qf4 Bc2 13.Rc1 Bg6 14.Rd1 Qd7 15.Ne4?? Nce4 (16.Ne5 Qe6 17.Ng6 fg6–+; 15...Nfe4 16.Be2–+) 0–1. Baer,Werner – Bonetti,Shane, TT–11 ETC, 2003.

7.b5 c6 8.Nf3 Nbd7 9.d4= Re8 10.Be2 ed4 11.Qd4 Nc5 12.Rd1 Qc7 (12...Bf5 13.0-0=) 13.0-0+= Bg4 14.Ng5 (14.Rfe1 Rac8+=) 14...Bf5 (14...Be2 15.Ne2 Qd7 16.Nc3=) 15.Bh5?? (better 15.e4 Bg6 16.f4=) 15…Nh5-+ (15...Nh5 16.e4 Bg4-+) 0-1. Superfish (2215) - yangxiaoxian (2265), Rated Blitz game, lichess.org, 2016.

7.b5 c6 8.Nf3 Bg4 9.Be2 Nbd7 10.h3 Bh5 11.d4 ed4 (11...e4 12.Nd2 Be2 13.Qe2=) 12.Nd4+= Be2 13.Qe2 (worse 13.Nde2 Ne5 14.Qb3 Nd3 15.Kf1 Qd7=+) 13...cb5 14.cb5 Nc5 15.0-0 Rc8 16.Rad1 Qd7 17.Qf3 a4 (17...Ne6!?+=) 18.Nf5+- Nb3?? (better 18...Rfd8+-) 19.Nd5 (19.Na4?! Rc2 20.Nb6 Qe6 21.Ne7 Qe7 22.Bf6 Qf6 23.Qf6 gf6 24.Rd6 Nd2+-) 19...Bd8 (19...Nd5 20.Qg4 Bg5 21.Rd5 Rc5+-) 20.Nf6 Bf6 21.Bf6 (better 21.Nh6! Kh8 22.Qf6 Rg8 (22...gf6?? 23.Bf6) 23.Rd6 Qe8 (23...gf6 24.Bf6 Rg7 25.Rd7 b6 26.Rf7 Rcg8 27.Rd7 Re8 28.Bg7) 24.Nf7 Qf7 25.Qf7 Nc1 26.Rh6 Rc5 27.Qg6 Ne2 28.Kh2 Rb5 29.Rh7) 21...Rc5 (21...Qf5 22.Qf5 gf6 23.Rd6 Rc5 24.Qg4 Rg5 25.Qa4 Nc5+-) 22.Qg4 (22.Qg4 Qf5 23.Qg7; 22.Qg3 Qf5 23.Qg7) 1-0. Superfish (2225) - ChessPlayer3000 (2170), Rated Blitz game, lichess.org, 2016.

7.b5 Nbd7 8.d3 Re8 9.Nf3 c6 10.d4 ed4 11.Nd4 c5 12.Nde2 Ne5 13.Nf4 Bg4 14.Qd2 Nfd7 15.Nfd5 Bf3 16.Qc2 Bh5 17.Be2 Be2 18.Qe2 Bf6 19.Ne4 Ng4 20.Nd6 Bb2 21.Ra2 Re6 22.Nb7 Qb8 23.Rb2 Ngf6 24.Nc5 Nc5 25.Rd2 Nce4 26.Rd4 Nd5 27.cd5 Re8 28.Qd3 Nc5 29.Qb1 Qd6 30.0-0 Rac8 31.a4 Re5 32.Rfd1 Rh5 33.h3 Re5 34.Qc2 Re7 35.Qc3 Ra8 36.Rc4 Nb7 37.Rc6 Qd8 38.d6 Rd7 39.e4 Qe8 40.e5 Rad8 41.b6 f6 42.f4 Qh5 43.Rc1 fe5 44.fe5 h6 45.Rc7 Qf5 46.Qb3 Kh7 47.Rd7 Rd7 48.Rc7 Qe4 49.Qf3 Qd4 50.Qf2 Qa1 51.Qf1 Qd4 52.Kh1 Rd8 53.Qf5 Kh8 54.Rb7 Rg8 55.Re7 Qb6 56.Qf7 (56…Qb8 57.d7+-) 1–0. Fritz 5.32 – Fritz 6, 2006.

7.b5 Nbd7 8.Nf3 Nc5 9.d4 ed4 10.Nd4 Re8 11.Be2 Nfd7 12.Nd5 Bf6 13.Qc2 Be5 14.0-0 Nf6 15.Bf3 Ng4 16.g3 Nf6 17.Bg2 Nd5 18.Bd5 Qe7 19.Bg2 Bd7 20.Rfe1 Rab8 21.a4 ½–½. Schirmer,Michael – Rubin,Peter, DESC, 2004.

7.b5 Nbd7 8.Nf3 e4 9.Nd4 Nc5 10.Qc2 Bg4 11.d3 ed3 12.Bd3 Nd3 13.Qd3 Bh5 14.e4 Bg6 15.0-0 Nd7 16.Nd5 Nc5 17.Qe2 Re8 18.f3 Bg5 19.b6 cb6 20.Qd1 Bf6 21.Ra2 Be5 22.Nb5 Ne6 23.Rf2 Bb2 24.Rab2+/- Kh8 25.Rbd2 Rc8 26.Ndc3 Qf6 27.f4 Nf4 28.Nd5 Nh3 29.gh3 Qg5 30.Qg4 Qg4 31.hg4 Re4 32.Nd6 Rg4 33.Kf1 Rb8 34.Nb6 f6 35.Nd7 Ra8 36.c5 h6 37.Rfe2 Rf4 38.Kg2 Rg4 39.Kf2 Rf4 40.Kg3 Ra4 41.Re3 f5 42.Rb3 Rg4 43.Kf2 Rf4 44.Ke3 Rh4 45.Rb7 Rh3 46.Kd4 Ra3 47.c6 Be8 48.Rdb2 Ra4 49.Kd5 Rb4 50.R2b4 ab4 51.Ne8 Re8 52.c7 (52.c7 Kg8 53.Rb8 Kh7 54.Re8 Kg6 55.c8Q Kg5 56.Qc1 Kg4 57.Qg1 Kh4 58.Qd4 Kh5 59.Qg7 Kh4 60.Qh6 Kg4 61.Ne5#) 1–0. pcmvr – bigart (2535), net–chess.com, 2009.

7.b5 Nbd7 8.Nf3 e4 9.Nd4 Nc5 10.Be2 d5 11.0-0 dc4 12.Bc4 Bg4 13.Qc2 Qd6 14.f3 ef3 15.Nf3 Be6 16.Na4 Bc4 17.Qc4 Qd3 18.Rac1 Qc4 19.Rc4 Na4 20.Ra4 Nd5 21.Rc1 f5 22.Rd4 Rfd8 23.Rd3 g6 24.Be5 Rac8 25.Kf2 Kf7 26.h3 h5 27.Bb2 g5 28.Ke2 h4 29.Ba1 Rb8 30.Rc4 Ra8 31.Be5 Rac8 32.Bc3 Ke6 33.Ba5 Kf6 34.a4 Rd7 35.Bc3 Nc3 36.Rdc3 Bd6 37.a5 Ra8 38.Ra4 Ra7 39.a6 Re7 40.Rc1 c5 41.bc6 Ra6 42.Ra6 ba6 43.Ra1 Ra7 44.Kd3 a5 45.Nd4 Be5 46.Kc4 a4 47.Ra3 Ra8 48.Kb5 Rb8 49.Kc5 Rb2? 50.Nf3+- Bb8 51.Ra4 Bc7 52.Kd5 Rb5 53.Kc4 Rb6 54.Nd4 Be5 55.Kd5 Rb8 56.Ra6 Rd8 57.Kc5 f4 58.c7 Ke7 59.Nc6 (59.Nc6 Kf7 60.cd8Q Bc7 61.Qc7 Kg6 62.Nd4 Kh5 63.Qf7) 1–0. Fournier,Frederic (2270) – Bukbuk (2440), queenalice.com (AUTO–ELITE–552), 2010.

7.b5 Be6 8.Qc2 Nbd7 9.Nf3 c6 10.Be2 Nb6 11.c5 Nc4 12.bc6 bc6 13.cd6 Qd6 14.Ne4 Ne4 15.Bc4 Bc4 16.Qc4 Nc5 17.Ne5 Rab8 18.Bc3 Bf6 19.d4 Ne4 20.0-0 Nc3 21.Qc3 c5 22.Rac1 cd4 23.ed4 a4 24.Rfd1 h6 25.g3 Rfd8 26.Nc6 Rb3 27.Qa5 Re8 28.Qa4 Ra3 29.Qc4 Qd7 30.d5 Raa8 31.d6 Re6 32.Qd5 Rae8 33.Kg2 Rc8 34.Rc4 Ree8 35.Rdc1 Ra8 36.Na5 Ra5 37.Qa5 Qd6 38.Rc8 Rc8 39.Rc8 Kh7 40.Qc5 Qc5 41.Rc5 Kg6 42.g4 Bd4 43.Rf5 Bf6 44.Kg3 Kh7 45.h3 Kg8 46.Rf6 gf6 47.Kf4 f5 48.Kf5 Kg7 49.f4 Kg8 50.Kf6 Kf8 51.h4 Kg8 52.Ke7 Kg7 53.h5 f6 54.f5 Kg8 55.Kf6 Kf8 56.Ke6 Ke8 57.f6 1–0. BlackDemon (2610) – Esterchingtan (2150), FICS rated standard game, 2013.

7.b5 Be6 8.Nf3 Nbd7 9.Be2 Nb6 10.d3 a4 11.0-0 c6 12.c5 Bb3 13.Qc1 Nbd7 14.cd6 Bd6 15.bc6 bc6 16.Nb1 Re8 17.Nbd2 (17.Qc6? Nc5 18.Be5 Re5 19.Ne5 Bd5-+ (worse 19...Be5 20.d4 Nfe4 21.Bg4-+)) 17...Nc5 18.d4 ed4 19.Bd4 Nfe4 20.Bc4 Bc4 21.Qc4 Bf8 22.Qc2 Qd5 23.Bc5 Nc5 (worse 23...Bc5 24.Ne4 Re4 25.Rfc1+/-) 24.Nd4 g6 25.Rab1 Rab8 26.Rfc1 h5 27.h3 Rb1 28.Rb1 Rd8 29.Rb6 Attacks the isolani on c6 29...Bg7 30.Rb4 Bf8 (30...Bd4?? 31.Rd4 (31.ed4?! Ne6=) 31...Qg5 32.Nf3+-) 31.g3 Bg7 32.Rc4 Bf8 (32...Bd4?? 33.Rd4 (worse 33.ed4 Ne6-/+) 33...Qg5 34.Nf3+-) 33.h4 Rd7 34.N4f3 Be7 35.Rd4 Qe6 36.Rc4 Qd5 37.Rd4 Qe6 38.Rc4 Qd5 39.Nd4 Bf8 40.N4f3 Be7 41.Rd4 Qe6 ½-½. omni1 (2565) - redfoxrising (2215), marekt's mini-tournament XLV (1.b4), gameknot.com, 2023.

7.Be2 ab4 8.ab4 Ra1 9.Qa1 Nc6 10.b5 Nb4 11.Qa4 d5 12.Ba3 c5 13.bc6 Nc6 14.Be7 Ne7 15.Nf3 d4 16.Nb5 Nc6 17.0-0 Bg4 18.h3 Bh5 19.Re1 d3–/+ 20.Bd1 Ne4 21.Qa1 Qe7 22.Nc3 Nc3 23.Qc3 Bf3 24.Bf3 e4 25.Bd1 Ra8 26.f3 Ra3–/+ 27.Qb2 Qb4 28.Qb4=+ Nb4 29.fe4 Ra2 30.Bf3 Rd2 31.Rb1 Nc6 32.Rb7 g6 33.c5 Rc2 34.Rd7 Ne5 35.Rd5 f6 36.Kf1 Rc1 37.Kf2 Kf7 38.g4 Rc2 39.Kg3 g5 40.Bd1 Rd2 41.Ba4 Rc2 ½–½. Shishkov,Andrei (2375) – Lauk,Ular (2395), EST–chT, 2006.

7.Nf3 ab4 8.ab4 Ra1 9.Qa1 Na6 10.b5 Nc5 11.d4 ed4 12.Nd4 Bd7 13.Be2+= c6 14.0-0 Re8 15.Rd1 Qc7 16.Bf3 h6 17.Qa7 Rc8 18.Ba3 Ne6? 19.Nf5+- Bf8 20.Bd6 +-. pierre – Francizco, ChessWorld.net, 2006.

7.Qc2 d5 8.Nf3 e4 9.Nd4 Nbd7 10.cd5 cd5 11.f3 ef3 12.gf3 Nb6 13.Rg1 Bd7 14.Bd3 Kh8 15.Qb3 Rc8 16.Nf5 Nc4?? 17.Ne7+/- Qe7?? 18.Nd5+- Qe6 19.Bc4 Rc4 20.Qc4 Rc8 21.Qd4 (21.Qd4 Qd6 22.Nf6 Qd4 23.Bd4+-) 1–0. tracy – tre, internet, 2011.

7.Qc2 Nbd7 8.g4? Re8 (better 8...Ng4!? 9.Nf3 f5-/+) 9.g5= Nh5 10.h4 g6 11.Be2 Ng7 (11...Nb6!?=+) 12.Nf3 a5 13.b5 (13.Rg1 ab4 14.ab4 Ra1 15.Ba1 f5=) 13...Nc5 14.d4 ed4 15.Nd4 Bf8?? (better 15...Nf5 16.bc6 Nd4 17.ed4 Bf5+=) 16.bc6+- bc6 17.Nc6 Qc7 (17...Bf5!? 18.e4 Qb6+-) 18.Nd4+- Nf5? (better 18...Bb7 19.Nd5 Bd5 20.cd5 Nh5+-) 19.Nd5 Qd8 (19...Qb7 20.Bf3 Bg7 21.Nf6 Bf6 22.Bb7 Bb7 23.Nf5 Bb2+-) 20.Nf6 (20.Nf6 Qf6 21.gf6+-) 1-0. allyouneedisluft (2520) - Mario_Ujevic (2375), Rated Bullet game, lichess.org, 2017. (=1.a3 d6 2.b4 e5 3.Bb2 Nf6 4.c4 Be7 5.e3 0-0 6.Nc3)

7.Be2 Bf5 8.Nf3 h6 9.0-0 Nbd7 10.h3 a5 11.b5 Qc7 12.d4 e4 13.Nd2 d5 14.c5 cb5 15.Qb3 Be6 16.Nb5 Qb8 17.a4 Bc5? (better is 17...Rc8+=) 18.dc5+- Nc5 19.Qa3 b6 20.Rac1 Nfd7 21.Bd4 Qd8 22.Kh2 f5 23.f4 Rc8 24.Rc2 Qe7 25.Nb3 Rc6 26.Bc3 Re8 27.N3d4 Rcc8 28.Bh5 Rf8 29.Na7 Rc7 30.Nac6 Qh4 31.Be2 Nd3 (31...Rfc8 32.g3 Qf6 33.Nf5 Qf7 34.Nfe7 Kh7 35.Nc8 Rc6+-) 32.Qd6 Rc6 33.Nc6 N3c5 (33...d4 34.Qe6 Rf7 35.Bd4+-) 34.g3 Qd8 (34...Qf6 35.Bf6 Rf6 36.Ne7 Kh7 37.Nd5 Bd5 38.Qd5 Nf8+-) 35.Nd8 Rd8 36.Qe7 Nf6 37.Qd8 Kh7 38.Bf6 gf6 (38...Bf7 39.Rc5! Be8 40.Qc7 Bf7 41.Qf7 bc5 42.Qg7) 39.Qe7 (39.Rc5 bc5 40.Rb1 h5 41.Rb7 Kg6 42.Qh8 d4 43.Qh5) 39...Kg8 40.Rc5 bc5 41.Rb1 Bc8 (41...Bf7 42.Rb8 Kg7 43.Bh5 d4 44.Qf7) 42.Rb8 Kh8 (42...d4 43.Rc8) 43.Rc8 1–0. usingprogram (2000) – paulochefe, kurnik, 2011.

7.Nf3 Nbd7 8.Be2 e4=+ 9.Nd4 Nb6 10.0-0= d5 11.c5+= Nbd7 12.f4 a6 13.Qe1+/- Qc7 14.Qg3 g6 15.Nf5 Re8? 16.Ne7 Re7 17.Qh4 Re8 18.f5 Ne5 19.fg6 Nh5 20.gf7 Nf7 21.Bh5 Rf8 22.Nd5! Qd6 23.cd6 (23.cd6 cd5 24.Bf7 Rf7 25.Qd8 Rf8 26.Rf8#) 1–0. hadziuk – pietrek, rancho, 2009.

7.Nf3 e4 8.Nd4 c5 9.Nb3 Nc6=+ 10.Qb1 cb4 11.ab4 Nb4 12.Ne4 d5 13.cd5 Re8 14.Nf6 Bf6 15.Bd4 b6 16.Bc4 Bb7 17.0-0 Bd5 18.Bf6 Qf6 19.Bd5 Nd5 20.Rc1 a5 21.Nd4 Rec8 22.Qe4+= Nb4 23.Rc3 Rd8 24.Rac1+= Re8 25.Qb1 Rad8 26.Rc7 Re7 27.Rc8 ½–½. Fels,Bernhard (2160) – Moeckel,Jean L (1870), ICCF Veterans World Cup, 2009.

7.Nf3 e4 8.Nd4 c5 9.Nc2 Nc6 10.d3 Bg4 11.Qd2 ed3 12.Bd3 Ne5 13.e4 Nh5 14.Nd5 Bg5 15.Nce3 cb4 16.ab4 Nf4 17.Bf1 Nd5 18.cd5 Qf6 19.Rc1 Rfc8 20.Rc3 Rc3 21.Qc3 Bd7 22.Be2 Be3 23.Qe3=+ Nf3 24.Qf3 Qb2 25.0-0 Qb4 26.Bd3 b6 27.Rb1 Qc5 28.Qf4 Rc8 29.Ba6 Re8 30.h3 Qa3 31.Bb7 h6 32.Bc6=+ Qd3 33.Re1= Bc6 34.dc6 Rc8 35.Rc1 Rc7 36.Qf5 Kf8 37.Qd5 Qd5=+ 38.ed5 Ke7 39.f4 Kd8 40.Ra1 Re7 41.Ra6 Kc8 42.g4 Kb8 43.Kf2= Re4 44.f5 g5 45.c7 Kc8=+ 46.Ra7 b5 47.Ra6 Kc7 48.Rc6 Kd7 49.Rb6 b4 50.Rb7 Kc8 (51.Rf7 b3=). Fournier,Frederic – Klemens,Leszek, corr ICCF TT/6/02/2, 2002.

7.Nf3 e4 8.Nd4 c5 9.Nde2 cb4 10.ab4 Na6 11.b5 Nc5 12.Nf4 a5 13.d4+= ed3 14.Bd3 Be6 15.Be2 Nfd7 16.0-0 Re8 17.Ncd5 Bg5 18.Nh5 Bh6 19.Ra3 a4 20.Qd4 Bd5 21.Qd5 Nb6 22.Qf3 Re6 23.Rd1 Qc7 24.Rd4 Ncd7+= 25.Rc3 g6 26.Qg3 Qc5= 27.Ba3 Qd4 28.ed4+/- Re2 29.h3 Bd2 30.Rc2 Bf4 31.Qc3 Rc2 32.Qc2 gh5 33.Qe4 Bd2 34.c5 Nc4 35.Qb7 Rd8 36.c6 Ndb6 37.c7 Re8 38.Bd6 Bc3 39.Bc5 a3 40.Bb6 a2 41.c8Q a1Q 42.Kh2 Nd6 43.Qcd7 Nb7 44.Qe8 Kg7 45.Qe5 (45…Kg8 46.Qb8 Kg7 47.Qb7+-) 1–0. Pommerel,Wim – Preuss,Guenter, corr 3GMM–F, 2001.

7.Nf3 Bg4 8.Be2= Bf3 9.Bf3 d5 10.cd5 cd5 11.0-0 e4 12.Be2 Nbd7 13.Rc1 Rc8 14.Qb3 Nb6 15.Nb5 a6 16.Nd4 Qd7 17.h3 Kh8 18.d3+= Rfd8 19.g4 h6 20.Nf5 ed3 21.Qd3 Rc1 22.Rc1 Rg8 23.Be5 Bd8 24.Qd4 Qe6 25.Bd3 Nbd7 26.Bf4 Bb6 27.Qb2 Nf8 28.b5 ab5 29.Qb5 Ng6 30.Bc7 Nd7 31.Bb6 Nb6+/- 32.a4 Ne5+= 33.Be2 Rb8 34.a5+/- Nbd7 35.Nd4 Qa6? 36.Qb4 Qa7 37.Rc7 Nc6?? 38.Nc6+- bc6 39.Qe7 Qc7 40.Qf7 Rf8 41.Qg6 Qa5 42.Bd3 Qe1 (43.Bf1 Qf2 44.Kh1 Qf1 45.Kh2 Qe2 46.Kg1 Rf1#) 0–1. Vandenburg,V – Idzikowski,T, East Lansing ch–MI opB, 1991.

7.Nf3 Bg4 8.h3 Bf3 (8...Bd7 9.Be2=) 9.gf3 (9.Qf3 d5=) 9...d5 (9...Nbd7 10.Rg1=) 10.Qc2 (10.d4 ed4 11.Qd4 dc4 12.Qc4 b5=) 10...Nbd7 11.Rg1 (11.cd5 cd5 12.Qd3 Nb6=) 11...d4 (11...a5 12.b5=+) 12.Ne4 (12.Ne2 a5 13.ba5 Re8=) 12...Ne4 (12...a5 13.c5=+) 13.fe4 c5 14.b5 (14.ed4 ed4 15.Qd3 Re8=) 14...a6 15.a4 (15.Be2 ab5 16.cb5 Re8=) 15...ab5=+ 16.cb5 Qa5 17.Bc4 (17.Qb3 Ra7=) 17...Nb6=+ 18.Ke2 (18.ed4!? Nc4 19.Qc4 ed4 20.Qd5=+) 18...Qb4–/+ (18...Na4?! 19.Kf3=) 19.d3 Ra4 (19...Nc4 20.dc4 Rfd8 21.Kd3–/+) 20.ed4 (20.Ra4 Na4 21.Ba1 Nb6–/+) 20...ed4 (20...cd4 21.Ra4 Na4 22.Rb1 Nb2 23.Bd5–/+) 21.Rab1 (21.Ra4 Na4 22.Ba1 Qa5–/+) 21...Qa5 (worse 21...Nc4 22.Bd4 cd4 23.Rb4 Rb4 24.dc4+-) 22.Bb3 Rb4 23.Qd2 (23.Bc1 Na4 (worse 23...Rb5 24.Bd2 Rb4 25.Bb4 cb4 26.Qc7 Qh5 27.Rg4+=) 24.Bd2 Nc3 25.Bc3 dc3–/+) 23...Kh8 (23...Qb5?? 24.Qh6 Qd3 25.Kd3 Rb3 26.Ke2+-; 23...Rb5?? 24.Qh6 Qd2 25.Kd2 Nc4 26.dc4+-) 24.Bc4? (better 24.Rg7 Kg7 25.Qf4–/+) 24...Nc4–+ (24...Rc4?? 25.Qa5 Rc2 26.Kd1 Rb2 27.Rb2+-) 25.dc4 Qa2 26.e5 (26.Rgc1–+) 26...Qc4 27.Ke1 (27.Qd3 Qa2 (worse 27...Qb5 28.Qb5 Rb5 29.Bd4 Rb1 30.Rb1 cd4 31.Rb7–+) 28.Qd2 Rc8–+ (worse 28...Rb5 29.Bd4 Qd2 30.Kd2 Rb1 31.Rb1 cd4 32.Rb7–+)) 27...Qd5 (27...Qb5 28.h4–+) 28.Qf4 (28.Kf1 Rb5 29.Qe2 Rb3–+) 28...d3 29.Qg3 Qe4 (29...Rg8 30.e6 Qe6 31.Kf1 Qe2 32.Kg2–+) 30.Kf1 Qe2 31.Kg2 Rb2 32.Rbe1 (32.Rb2 Qb2 33.Qd3 Qe5–+) 32...Qh5 (32...Qc2 33.Rc1 Qb3 34.Kh2–+) 33.Qd3 Bh4 34.Ref1 (34.Rgf1 Qg5 35.Kh1 Bf2–+) 34...Qe5 35.Kh1 Rd8 (35...Rd8 36.Qf3 Qe6–+) 0–1. Campos Calvo_Sotelo,Juan (1845) – Garcia Gutierrez,Jose (1905), Championship de Madrid de Veteranos, 2016.

7.Nf3 a5 8.b5 c6 9.Be2 Nbd7 10.0-0 Rc8 11.bc6 Rc6 12.d3 Nb6 13.Rb1 Rc8 14.Ba1 Nfd7 15.Qb3 h5 16.Nd2 h4 17.h3 Ra8 18.Bf3 Qc7 19.Rfc1 Rfc8 20.a4 Ra6 21.Nb5 Qb8 22.d4 Bf5 23.Be4 Be6 24.Bd3 ed4 25.Nd4 Nc5= 26.Qc2 Nd3 27.Qd3 Bd7 28.Nf5+/- Bf5 29.Qf5 Rc7 30.Bd4 Qc8 31.Qc8 (31.Bb6 Qf5 32.Bc7 Qd7–/+) ½–½. Fournier,Frederic (2415) – Gaspar Roberto (2385), chess.com (Master tournament), 2009.

7.Nf3 c6 8.Qc2 Nbd7 9.Ng5 (9...d5 10.d4 ed4 11.ed4=+) =+. slavisa3 – lon9, Live Game Caissa's Web, 2004.

7.Nf3 Nbd7 8.Be2 c6 9.0-0 Qc7 10.Ng5 (10.d4 h6=) 10...Bf5 11.f4 ef4 12.Qb3 h6 (12...a5 13.Rf4 (13.ef4? ab4 14.Na4 ba3 15.Ba3 Rfe8–+) 13...Bg6 14.Nge4=) 13.Rf4 Bg6 14.Nge4 Ne5 (14...a5 15.Raf1=) 15.Raf1 (15.Nf6 Bf6 16.Ne4 Be4 17.Re4 Nd7+=) 15...Ne4 (15...a5 16.b5=) 16.Ne4+= Rad8 (16...a5 17.b5=) 17.h4 f5? (better 17...Bh7+=) 18.Ng3+- 1–0. Barcarola (1700) – hqt3g, internet free game, 2018.

7.Nf3 Nbd7 8.Be2 h6 9.d4 Ne8 (9...a5 10.d5 Bf5 11.0-0=) 10.0-0+= c6 11.Qc2 Qc7 12.Rfd1 f5 (better is 12...Nef6!?+=) 13.d5+/- cd5 14.cd5 (< 14.Nd5 Bd5 15.Rd5 Nef6+/-) 14...Bf7 15.Qf5 Bd5 16.Nd5 Rf5 17.Nc7 Nc7 18.Rac1 (18...Ne6 19.Bc4+-) 1–0. Mehlhorn,Uwe – Thal,Peter, remoteschach.de, 2003.

7.Nf3 e4 8.Nd4 Bd7 9.f3=.

7.Nf3 Bg4 8.Be2 h6 (8...e4 9.Nd4 Be2 10.Qe2=) 9.0-0= c6 10.d4 e4 11.Nd2 Be2 12.Qe2 d5 13.c5 Nbd7 14.f3 ef3 15.Qf3 Nh7 (15...Re8 16.b5=) 16.e4+= Bg5 17.Rad1 Bd2 18.Rd2 Ng5 19.Qf5 Ne4 20.Ne4 de4 21.d5 e3 22.Rd3 e2 23.Re1 cd5 (23...g6 24.Qf3 Re8+-) 24.Rg3 (24.Rd5 Qh4 25.g3 g6 26.Qd7 Qe4+-) 24...g5 (better 24...d4=) 25.h4?? (25.Qd5 Re8 26.Qb7 Qc8 27.Qc8 Rac8+-) 25...Qe7 (25...Qc7 26.Re3 b6= (26...gh4?? 27.Qg4 Kh7 28.Qg7)) 26.Re2!? Qd8 (26...Qe2 Theme: Deflection from g5 27.Rg5 A beautiful mate combination) 27.hg5 Do you see the mate threat? 27...h5 28.g6 (28.Qd5 Qc7 29.Rh3 Rae8 30.Rh5 Nf6 31.Bf6 Qc5 32.bc5 Re2 33.Rh8) 28...f6 29.Qh5 (29.Qh5 Qe7 30.Qd5 Kh8 31.Rh3 Kg7 32.Re7 Kg6 33.Qh5) 1–0. Raanby,Hans – Pettersson,Tomas, Norrkoeping SWE, 1988.

7.Qc2 a5 8.b5=+.

7.Qc2 c5 8.Nf3= cb4 9.ab4 Na6 10.Ba3 h6 11.Be2 d5 12.c5 d4 13.Ne4 Ne4 (13...Nd5!? 14.Bb5 Nab4 15.Bb4 Nb4=) 14.Qe4+- f5 15.Qc2 de3 (15...Nc7 16.Bc4 Be6 17.Be6 Ne6 18.Qf5+=) 16.Bc4+- (16.fe3?! Bf6+=) 16...Kh7 17.de3 e4 18.Rd1 Qc7 19.Nd4 Rd8 (19...Bd7 20.0-0+-) 20.0-0+- Bf6 21.Nb5 Qc6? (better 21...Qe7 22.Rd8 Qd8+-) 22.Rd8 Bd8 23.Nd6 Nb8 (23...Nc7 24.b5 Qd7 25.Ra1+-) 24.f3 Bg5 25.fe4 (25.fe4 Nd7 26.Rf5 Be3 27.Kf1 Nc5 28.Rf3+-) 1–0. Marconi,Ralph P (2100) – Woldmo,Asbjorn Ingar (2085), CCCA Executive Championship, 2008.

7.Qc2 c6 8.Nf3= Bf8 (8...Nbd7 9.Be2=) 9.d4 Bg4 (9...e4 10.Nd2 d5 11.Rc1=) 10.de5 de5 11.Be2 (11.Ne4 Ne4 12.Qe4 f5=) 11...Qc7 (11...c5 12.Rd1 Nbd7 13.b5=) 12.0-0 (12.h3 Bh5=) 12...Nbd7 (12...a5 13.c5=) 13.h3 Bh5 14.Ng5 (14.c5 b6 15.cb6 ab6=) 14...Be2 15.Ne2 a5 (15...c5 16.b5=) 16.c5 h6 17.Nf3 (17.Ne4 Nd5 18.N4c3 ab4 19.Nd5 cd5 20.ab4 Qc6=) 17...b6 (17...ab4 18.ab4 Ra1 19.Ba1=+) 18.cb6= Qb6 19.ba5 Ra5 20.Rfc1 (20.Rfb1 Qc5 21.Nc3 Rb8=) 20...Rb8 (20...Bd6 21.Rab1 Qa6 22.Qc6=) 21.Bc3 Ra3 (21...Rc5 22.Ng3=) 22.Ne5+= Ra1 23.Ba1 Attacks the isolani on c6 23...c5 24.Nc4 (24.Nf4 Bd6 25.Nc4 Qc7 26.Bf6 Bf4+=) 24...Qa6 (24...Qb3 25.Qf5=) 25.Nf4+= Be7 (25...Qb7 26.Nd3+=) 26.Nd3 (26.e4 Qc6 27.Rd1 Nb6+=) 26...Rb5 (26...Qe6 27.Rd1=) 27.Nde5 (27.Rd1 Qc6=) 27...Nf8 (27...Qe6 28.Qa4 Rb4 29.Qa8 Rb8 30.Qf3=) 28.Qf5 (28.e4 Qb7 29.f3 Ne6+=) 28...Qe6= 29.Qf3 Qd5 (better 29...N8d7!?=) 30.Nc6+- Qe6 (30...Ng6 31.Bf6 Qf3 A) 32.gf3?! Bf6 (worse 32...gf6 33.Ne7 Ne7 34.Nd6+-) 33.Kf1 Kh7=; B) 32.Ne7 Ne7 33.gf3 gf6 34.Nd6+-) 31.Ne7+- Qe7 32.Bf6 gf6 33.Qc6 (33.Qg3 Ng6 34.Nd6+-) 33...Rb7 (better 33...Qb7!? 34.Qf6 Rb1 35.Rb1 Qb1 36.Kh2 Qg6 37.Qg6 fg6+-) 34.Nd6+- Rc7 35.Nf5 Qe5 (35...Rc6?? 36.Ne7 Kg7 37.Nc6+-) 36.Qf3 Ne6 37.Nh6 Kf8 38.Nf5 (38.Qa8 Kg7 39.Rc4 Nf8+-) 38...Ng5 (better 38...Ra7+-) 39.Qa8 Qe8 40.Qa6 (40.Qd5 Ne6+-) 40...Rc6 (40...Qc6 41.Rd1 Ke8 42.Qc4+-) 41.Qa7 (41.Qa4 Rc7 42.Qh4 Kg8+-) 41...Ne4 (41...Qe5 42.Qa8 Qe8 43.Qa4+-) 42.Rd1 (better 42.Qa4+-) 42...c4? (42...Rc8+-) 43.Rd7 Re6 44.Qc7 1–0. Steffens,Olaf (2295) – Kulman,Alexey (2125), Nyiregyhaza op, 2001.

7.Qc2 Nbd7 8.Nf3=+.

7.Nf3 a5 8.b5 Nbd7 9.d4 ed4 10.Nd4 Nc5 11.Be2 Nfe4 12.Nd5 Nf6 13.Nf4 Nfd7 14.Qc2 g6 (14...Bf6 15.Nd5=) 15.Nd5+= Nf6 16.Ne7 Qe7 17.0-0 Bg4 18.Rad1 a4 19.Ba1 Be2 20.Ne2 Ng4 21.h3 Nf6 22.Nc3 Nb3 23.Bb2 Nc5 24.Rd4 Ne6 25.Rd2 Nc5 26.Rfd1 b6 27.e4 Qf8 28.Re2 Qh6 29.Nd5 Nd5 30.cd5 Qg5 31.Qc3 f6 32.f4 (32.Qf3 Rf8 33.Rb1 Rae8+-) 32...Qf4+= 33.Rf1 (worse 33.Qf6 Qf6 34.Bf6 Re4 35.Re4 Ne4=+) 33...Qe5 34.Qc4 (34.Qc2!? Qh5 35.Bf6+-) 34...Qg3= 35.Rf3 Qh4 36.Bf6 Re4 37.Qc1 (worse 37.Bh4 Rc4 38.Bg5 Re4 39.Re4 Ne4=) 37...Qh5 38.Re4 Ne4 39.Ba1 Rf8? (better 39...Ng5 40.Rf2 Rf8 41.Rf8 Kf8+=) 40.Qc7+- Qh6 41.Rf8 Kf8 42.Qc8 Ke7 43.Bd4 Qh4 44.Qc1 Nc5 45.Qe3 Kd8 46.Bc5 (46.Kh2!?+=) 46...bc5= 47.b6 Qd4 (47...Qf6 48.Qe1=) 48.Qd4+= cd4 49.Kf1 Kc8 50.Ke2 Kb7 ½–½. Wantoch_Rekowski,Jacek (2305) – Kmiecik,Klaus (2215), 60yearsBdF–WS20, 2006.

7.Nf3= a5 8.Be2 (8.b5 c6=) 8...Nbd7 (8...e4 9.Ng5 d5 10.cd5 ab4 11.ab4 Ra1 12.Qa1 Bb4 13.Qa4 Bc3 14.Bc3=+) 9.0-0= c6 (9...ab4 10.ab4 Ra1 11.Qa1=) 10.d4 Qc7 (10...ab4 11.ab4 Ra1 12.Qa1=) 11.Qb3 Nf8 12.Rfd1 (12.b5 ed4 13.Nd4 Ne6+=) 12...Ng6 (12...e4 13.Nd2 Bf5 14.ba5 Ra5 15.Rac1=) 13.de5 Ne5 14.Ne5 de5 15.c5 Be6 16.Bc4 Bc4 17.Qc4 ab4 18.ab4 (worse 18.Qb4 Ra5–/+) 18...b6 19.Ra8 Ra8 20.cb6 Qb6 21.Ne4 Ne4 (21...Rd8 22.Rd8 Qd8 23.h3=) 22.Qe4 f6 (worse 22...Qb4 A) 23.Qe5?? Bf6 24.Qc7 Qa4–+ (24...Qb2?! 25.Qc6 Qb8 26.g3–+; 24...Bb2?! 25.Qc6 Qa5 26.h3–+); B) 23.Qc6 Qa4 24.Qa4 Ra4 25.Be5+-; 22...Bb4?! 23.Be5 Re8 24.Bc7 Re4 25.Rd8 Bf8 26.Bb6=) 23.Qc4 Kf8 24.Bc3 Rd8 25.Rd8 (25.Rc1 c5 26.b5 Qd6+=) 25...Qd8 26.g3 (26.h3 Qd1 27.Kh2 Qa4=) 26...Qd1 27.Qf1 (27.Kg2 Qa4 28.Qe6 Qb5=) 27...Qf1 (27...Qb3 28.Qc1=+) 28.Kf1= e4 29.Ke2 (29.f3 f5=) 29...Kf7 (29...Bd6 30.f3=+) 30.Kd2 (30.f3 f5=) 30...Ke6=+ 31.Kc2 Kd5 32.Kb3 h5 33.h3 (33.Bd4 g5=+) 33...g6–/+ 34.Bd2 f5 35.h4 (35.Bc3 h4–/+) 35...Bd8 (35...g5 36.hg5 Bg5 37.Bc3–/+) 36.Bc3=+ f4 (36...g5 37.hg5 Bg5 38.Be1–/+) 37.ef4 Bb6 38.Be1 Bd4 39.Ka4? (39.Kc2 Kc4 40.Kd1–+) 39...Kc4–+ 40.Ka5 Kd3 41.b5 cb5 42.Kb5 Ke2 43.Kc4 Bf2 (43...Ke1?! 44.Kd4 Kf2 45.Ke4 Kg3 46.f5 gf5 47.Kf5=) 44.Bc3 Bg3 45.Kd5 Kf3 46.Ke6 Bh4 47.Kf7 Kf4 (47...Bg3 48.Kg6 h4 49.f5–+) 48.Kg6 Kg4 49.Bd2 Bf2 (49...Bf2 50.Bb4 h4–+) 0–1. Adu,Oladapo (2250) – Ritter,Mark (2415), USA–chT Amateur East, 2000.

7.Nf3 c6 8.d4 e4 9.Nd2 Bg4 10.Qb3 d5 11.a4 Be6 12.b5 Nbd7 13.c5 (13.Be2 Nb6=) 13...Nf8 (13...Nc5!? 14.dc5 d4+=) 14.a5 Qd7 15.a6 Ng6? (better is 15...Reb8!?+=) 16.ab7+- Qb7 17.bc6 Qb3 18.Nb3 Rec8 (18...Reb8!? 19.Ra3 a5+-) 19.Ba6 1–0. Steffens,Olaf (2285) – Egli,U (2025), Atlantis Open, 2015.

7.Nf3 Bg4 8.Be2 Nbd7 9.h3 Bh5 10.g4 Bg6 11.Qb3 a5 12.0-0-0? ab4–/+ 13.ab4 c5 14.d4 cd4 15.ed4 Qc8 16.de5 de5 17.Nd2 Bf8 18.h4=+ h5 19.gh5 Nh5 20.Rhg1 Nf4–/+ 21.c5 Ne2 22.Ne2–/+ b6?? 23.Rg6+= bc5 24.Rg2 cb4= 25.Kb1 Nc5 26.Qd5?? Qf5–+ 27.Kc1 Nd3 28.Kb1 Nf4 29.Qe4 Qe4 30.Ne4 Ne2 31.Nf6= (31…Kh8 32.Ne8 Re8 33.Rg4=). WoodPusher83 – yulio, ChessWorld.net, 2006.

7.ed4 Bf5 8.Bd3 Bd3 9.Qd3 Re8 10.Ne2 Nc6 11.0-0 h6 12.Ng3 Ng4 (12...d5!?=) 13.h3 Nf6 14.Nd2 Nd7 (14...d5!?=) 15.Rfe1 Bf6 16.b5 Re1 17.Re1 Ne7 18.Nge4 Ng6 (18...d5 19.cd5 Nd5 20.Qf3=) 19.Nf6 Qf6 20.Ne4 Qf4 21.Bc1 Qh4 22.Qg3 Qg3 23.Ng3 Kf8 24.f3 (24.Nf5 a6 25.h4 Nf6+=) 24...Re8 (24...a6 25.Ne4=) 25.Re8+= Ke8 26.Kf2 Nb6 27.c5 dc5 28.dc5 Na4 29.Ne4 (29.Nf5 Kf8 30.Be3 Ne7 31.Ne7 Ke7=) 29...Ne5 30.Ke3 (better 30.Bf4!? Nd3 31.Ke3 Nf4 32.Kf4=) 30...f5=+ 31.Nd2 Kd7 (better 31...Nc5!? 32.Bb2 f4 33.Kd4 Ned7–/+) 32.f4 Nf7 33.Nc4 (33.Nb3 Nd8=) 33...Nc3 (better 33...Nc5!? 34.g4 g6–/+) 34.Bb2= Na4 (34...Nd5!? 35.Kf3 g5=) 35.Bg7+- h5 (better 35...Nc5!? 36.g4 Ke6+-) 36.Bd4 b6 37.cb6 ab6 38.Ne5 Ne5 (38...Ke6 39.Nf7 Kf7 40.Kf3+-) 39.fe5 Ke6 (39...c5 40.bc6! Kc6 41.Kf4+-) 40.Kf4 Kd5 41.Kg5?? (better 41.Ba1 Ke6 42.Kg5+-) 41...Kd4+= 42.e6 Nc5 43.e7 Ne4 44.Kf5 (worse 44.Kh5 Nd6 45.Kg6 f4+-) 44...Nd6 45.Kg5?? (better 45.Ke6 h4 46.Kd7+-) 45...Kc5 46.Kh5 Kb5 47.g4 c5 48.g5 c4 (better 48...Kc6 49.g6 Ne8–/+) 49.g6= c3? (better 49...Ne8 50.Kh6 c3=) 50.g7+- c2 51.g8Q c1Q 52.e8Q Ne8 53.Qe8 Ka5 54.Qe5 (better 54.Qa8 Kb5 55.a4 Kb4 56.Qe4 Ka5 57.h4+-) 54...Qc5+= 55.Qc5?? (better 55.Qg5+=) 55...bc5–+ 56.Kg6–+. slavisa99 – lon12, Live Game Caissa's Web, 2004.

7.ed4 Bg4 8.Be2 Bf5 9.Nf3 Ne4 (9...d5 10.c5=) 10.Nbd2 d5 11.Ne4 de4 12.Ne5 f6 13.0-0?? (better 13.Ng4=) 13...fe5–+ 14.de5 Bg5 (14...Qd1 15.Rad1 Be6 16.Rd4–+) 15.c5 (15.Qd5 Qd5 16.cd5 Nd7–+) 15...Nc6 (15...Be6 16.Qc2 Qd5 17.f3–+) 16.Qb3 (16.b5 Ne7–+) 16...Kh8 17.Qc3 (17.Rad1 Qe7 18.f4 ef3 19.Bf3 Ne5 20.Bb7 Nd3–+) 17...Qe7 (17...Bf4 18.e6 Be5 19.Qc2–+) 18.e6? (better 18.b5 Nd8 19.f4 ef3 20.Rf3–+) 18...Be6 19.h4 (19.Qc2 Bd5–+) 19...Bf6 20.Qc2 Bb2 21.Qb2 Rf6 (21...Rad8!? 22.f3–+) 22.Rad1 Raf8 23.g3 (23.b5 Nd8 24.Qe5–+) 23...Bh3 24.Rfe1 (24.Qd2 Bf1 25.Rf1 a5–+) 24...Ne5 (24...Rf2 25.Rd5 Rg2 26.Kh1 Rff2–+) 25.Kh2 (25.Qd4–+) 25...Qe6 (25...Rf2 26.Kh1 Ng4 27.Bg4 Bg2 28.Kh2 Rb2 29.Rb1–+) 26.Rf1 (26.Kg1 Rf2 27.Qa1–+) 26...Rf2 27.Rf2 Rf2 28.Kg1 Rg2 29.Kh1 h6 (better 29...Nd3 30.Rf1 Nb2 31.Rf8 Qg8 32.Rg8 Kg8–+) 30.Rf1 (30.Rd2 Nd3! 31.Bd3 ed3 32.Rg2 Bg2 33.Qg2 Qe1 34.Kh2 Qe2–+) 30...Ng4 (30...Nf3 31.Rf3 ef3 32.Qc3 Qe2 33.Qg7 Kg7 34.b5 Qd1) 31.Qb3 (31.Bg4 Qg4 (31...Bg4?! 32.Qg2 Qd5 33.Rf8 Kh7 34.Qc2=) 32.Rf8 Kh7–/+) 31...Re2 (31...Rh2 32.Kg1 Qb3 33.Rf8 Kh7 34.Rh8 Kh8 35.Bd3 Rg2 36.Kh1 Nf2) 32.Qe6–+ Nf2 (32...Bf1 33.Qg4 Re1 34.Qc8 Kh7 35.Qf5 Kh8 36.Qf2+-) 33.Rf2 Be6 (better 33...Re1 34.Kh2 Be6 35.Rf8 Kh7–+) 34.Re2+- Bd5 35.Re3 (35.Kg2 g5+-) 35...Kh7 36.Kg2 Kg6 37.g4 Kf6 38.Kg3 Ke5 39.g5 (39.h5 c6+=) 39...Kd4 (39...hg5!? 40.hg5 Kf5=) 40.Re1 e3? (better 40...c6+=) 41.gh6 gh6 42.Kf4 Kd3? (better 42...a5+-) 43.Kf5 (better 43.Re3 Kc4 44.Re7+-) 43...Kd2 44.Ra1 e2 45.Ke5? (better 45.Kg6–/+) 45...e1Q?? (better 45...Bb3–+) 46.Re1+- Ke1 (46...Bc6 47.Rg1 Kc2+-) 47.Kd5 Kd1 (47...Kf2 48.Ke6 c6+-) 48.Ke5 (48.Ke6 b5 49.Kd7 Kc2 50.Kc7 Kb3+-) 48...c6?? (48...Kc2 49.h5 Kb3+-) 49.Ke6 (49.Kd6 Kc1 50.Kc7 Kb2 51.Kb7 Ka3 52.Ka7 Kb4+-) 49...a6?? (49...Kc2 50.Kd6 Kb3 51.Kc7 Ka3 52.Kb7 Kb4 53.Kc6+-) 50.Ke7 (better 50.Kd6 Kc2 51.Kc7+-) 50...h5?? (better 50...Kc2 51.Kd6 Kb3+-) 51.Ke8 (51.Ke8 Ke2 52.Kd7+-; better 51.Kd6 Kc2 52.Kc7+-) 1–0. slavisa11 – TheGuy, Live Game Caissa's Web, 2004.

7.Qd4 a5 8.b5 +=.

7.Bd4 a6 8.Bd3 Nc6 9.Bb2 Bg4 10.Ne2 Qd7 11.Qc2 Ne5 12.Be5 de5 13.Nbc3 Rad8 14.Rd1= Qc8 15.0-0 Rd7 16.f3 Be6 17.Ne4 Ne4 18.Be4 h6 19.Rd7 Bd7 20.Rd1 Be6 21.Bd5 c6 22.Be6 Qe6 23.e4 Qc8 24.Rd3 Rd8 25.Rd8 Qd8= 26.g3 a5 27.Qb3 Qb6 28.Kf1 ab4 29.ab4 Qd8 30.b5 Qb6 31.Qd3 cb5 32.cb5 Bc5 33.Qd7 f6 34.Qc8 Kh7 35.Qf5 Kg8 36.Qc8 Bf8 37.Qc4 Kh7 38.Qc8 Qd6 39.Qc4 b6 40.Kg2 h5 41.f4 ef4 42.Nf4 Qd2 43.Qe2 Qe2 44.Ne2 g5 45.Nc3 Bc5 46.h3 Kg7 47.g4 h4 48.Kf3 Kf7 49.Ke2 Ke6 50.Kd3 Ke5 51.Nd5 Bg1 52.Ke2 Ke4 53.Nf6= Kf4 54.Nh5 Ke4 55.Nf6 Ke5 56.Nh5 Bc5 57.Kd3= Be7 58.Ng7 Kf4 59.Ke2 Ke4 60.Ne6 Kd5 61.Nc7 Kc4 62.Kf3 Bd6 63.Ne6 Be7 64.Nc7 Bd8 65.Ne6 Bf6 66.Nc7 Kc5 67.Ke4+/- Kd6 68.Ne8 Ke7?? 69.Nf6+= Kf6 70.Kd5 Ke7 71.Kc6 Kd8 72.Kb6 Kc8 73.Ka7 (73.Ka7 Kc7 74.b6 Kd6 75.b7+-) 1–0. Paauwe,J – Arendse,J, PK Zeeland, 2001.

7.Bd4 c5 8.Bc3 Nc6 9.b5 Ne5 10.Nf3 Nf3 11.Qf3 Qc7 12.Bd3 Be6 13.Nd2 a6 14.ba6 Ra6 15.0-0 Rfa8 16.Bb2 R6a7 17.h3 d5 18.Rfb1 dc4 19.Bc4 Bc4 20.Nc4 b5 21.Nd2 c4 22.Rc1 Qb7 23.Qb7 Rb7 24.Bd4 Nd5 25.Ne4? f5 26.Nc5 Bc5 27.Bc5 Kf7 28.Kf1 Ke6 29.Ke2 Rc8 30.Bb4 Rcc7 31.f3 Nb4 32.ab4 Ra7 33.Kd2 Kd5 34.Kc3 Kc6 35.Rd1 Ra1 36.Ra1 Kb6 37.Ra8 Rd7 38.Rb8 Kc6 39.Rc8 Rc7 40.Rf8 g6 41.Rf6 Kb7 42.Rd6 Rc6 43.Rd5 Kb6 44.e4 fe4 45.fe4 Rf6 46.e5 Rf2 47.g4 Re2 48.Rd6 Kc7 49.Rd5 Kc6 50.Rc5 Kb6 51.Kd4 1–0. amator111 (1675) – emarko (1605), kurnik, 2011.

7.Bd4 c5 8.bc5 dc5–/+ 9.Bc3 Qd1 10.Kd1 Rd8 11.Kc2 (11.Ke1!?–/+) 11...Ne4 12.Be1 Bf6 13.Ra2 Nf2 14.Bf2 Bf5 15.Kc1 Bb1 (16.Rd2 Rd2 17.Kd2 Nc6–+) 0–1. chessH – MickeyMouse, ChessWorld.net, 2002.

7.Bd4 h6 8.Bd3 Nh7 9.Nf3 Bf6 10.Qc2 Bd4? 11.Bh7+- Kh8 12.Nd4 f5? 13.Bg6 Qf6? 14.Bh5+- c5 15.Nb5 Qa1+/- 16.Nc7 Bd7? 17.Na8 Nc6? 18.Nc7+- Ne5? 19.0-0 g6 20.Be2 Be6 21.Nd2 Qa3 22.Ne6 Re8 23.Nf4 cb4 24.Qb3 Qa5 25.Rb1 Nc6 26.Ng6 Kg7 27.Nf4 Qc5 28.Bf3 a5 29.Nd3 Qa7 30.c5! dc5 31.Qc4 b6 32.Bc6 (32.Bc6 Rd8 33.Qc2+-) 1–0. amator111 (1675) – alabaster8, kurnik, 2011.

8.Bb2 Bg4 9.Be2= Be2 10.Ne2 Ne5. mgriffin (1815) – darkprincess (1935), net–chess.com, 2001.

7.Nc3 a5 8.Nf3 ab4 9.ab4 Ra1 10.Qa1 Na6 11.b5 Nc5 12.d4 ed4 13.ed4 Nce4 14.Ne4+/- Ne4 15.d5 Bf5 16.Bg7 Re8 17.0-0 Bf6 18.Bf6 Qf6 19.Qf6 Nf6 20.Nd4 Bg6 21.f3 Nd7 22.Ra1 Nc5 23.Kf2 Kg7 24.Ra3 Kf6 25.Re3 Ra8 26.g4 Bb1 27.h4 h6 28.Kg3 Rg8 29.f4 Kg6 30.Re7 Rc8 31.g5 hg5 32.fg5 Bd3 33.Bg4 Rh8 34.Rc7 Bc4?! 35.Bf5 Kg7 36.Ne6 Ne6 37.de6 Bb5 38.Rf7 Kg8 39.Rb7 (39.Rb7 Be8 40.Rb6+-) 1–0. pcmvr – bigart (2535), net–chess.com, 2009.

7.d3 a5 8.b5=.

7.d3 a6 8.Nd2 Qd7 9.Ngf3 Nc6 10.0-0 Rab8 (10...h6 11.d4 e4 12.d5 ef3 13.Nf3+=) 11.e4 (11.d4 ed4 12.ed4 d5+=) 11...Nh5= 12.Rb1 (12.b5 ab5 13.cb5 Na5=) 12...Nf4=+ 13.g3 (13.d4 ed4 14.Nd4 Nd4 15.Bd4 b5=+) 13...Nh3 (13...Ne2 14.Qe2 Bg4 15.b5=+) 14.Kg2 (14.Kh1 b5=) 14...Ng5 (14...f5 15.b5 ab5 16.cb5=+) 15.Kg1 f5 (15...Nf3 16.Nf3 f5 17.Qc2=) 16.ef5 (16.Ng5 Bg5 17.ef5 Bf5=) 16...Bf5 (16...Nh3 17.Kh1 Rf5 18.Qa4=+) 17.Ng5= Bg5 18.Nf3 (18.Ne4 Bh6=) 18...Bh6=+ 19.Ra1 (19.Nh4 Be6=+) 19...Qf7 (19...Bh3 20.Re1–/+) 20.Bc1 (20.Nh4 Be6=+) 20...Bc1 (20...Bh3!?–/+) 21.Rc1 Bg4 22.Kg2 (better 22.Nd2 Bh3 23.Bf3=+) 22...Kh8 (better 22...Qd7!? 23.Kh1 h6–/+) 23.Ng5 (23.Ne5!? Bh3 24.Kh3 de5 25.Bg4+=) 23...Qh5= 24.Bg4 Qg5 ½–½. Alcocer,Danny – Jimenez,Ramon, Festival Panamericano da Juven, 2010.

7.Nf3= a5 8.b5=.

7.Nf3 a6 8.Nc3 Nc6 9.0-0 b5? 10.cb5+/- ab5 11.Bb5 Na7 12.Bd3 c5 13.Ng5 Bd7 14.bc5 dc5 15.Qc2 g6 16.f4 ef4 17.Nce4 Rc8 18.Qc3+- (18.ef4?! c4 19.Qc3 Qb6 20.Rf2 cd3 21.Nf6 Bf6 22.Qf6 Qf6 23.Bf6 Rc6+/-; 18.Rf4?! Nd5 19.Bc4 Nf4+=) 0–1. Fournier,Frederic (1910) – SaleenT7 (1715), Active (3/2), 2006.

7.Nf3= Ne8 8.d4 e4 9.Nfd2 f5 (9...d5 10.cd5 Bd5 11.Nc3+=) 10.d5 Bf7 11.Nc3 Nd7 (11...Bf6 12.0-0+=) 12.g4+/- g6 (12...fg4!? 13.Nce4 Ne5+=) 13.Rg1 fg4 14.Nce4 Ne5 15.Be5 (15.Bg4 Nd3 16.Ke2 Nb2–/+) 15...de5 16.Bg4 a5 (16...c6 17.dc6 bc6 18.Qa4+/-) 17.b5 Ng7 18.Qb3 Be8 19.Qc3 Bf6 20.Nf6 Qf6 21.Ne4 Qe7 22.Rd1 Nf5 23.Qd3 Bd7 24.Ng3 Nh4 25.d6 cd6 26.Qd5 Kh8 27.Be2 Bh3+= 28.Rd2 Rad8 29.f3 Qf6 30.Kf2 Nf3–/+ 31.Bf3 Bg4 32.Nf5 Qf5 33.Rg4? Qg4–+ 34.Qb7?? Qh4 35.Kg2 Qg5 36.Kh1?? Qe3 (37.Re2 Qf3 (< 37...Rf3 38.Re3 Re3 39.Qe7+/-) 38.Qf3 Rf3–+) 0–1. Dubinskaya,M (2015) – Zozulia,Anna (2245), Yalta op (Women), 1996.

7.Nf3 h6 8.Nc3 Nbd7 (8...a5 9.0-0=) 9.d4 c6 (9...a5 10.d5 ab4 11.ab4 Ra1 12.Qa1=) 10.h3 (10.0-0 e4 11.Nd2 d5=) 10...Bf5 (10...e4 11.Nd2=) 11.g4 (11.0-0 Qc7=) 11...Bg6 12.Rg1 (12.g5 hg5 13.Ng5 c5=) 12...Nh7 (12...Ne8 13.e4=) 13.e4 White plans d5 (13.h4!? e4 14.h5 ef3 15.Bf3=) 13...Ng5= 14.Ng5 Bg5 15.d5 cd5 (15...c5 16.Bc1=+) 16.cd5 (16.Qd5 Nf6 17.Qb7 a5=) 16...Nb6 (16...Rc8 17.Qa4 a6 18.Bd3=+) 17.Bd3 Rc8 18.Qb3 (18.Qe2 Bf4=+) 18...a6 (18...Qf6 19.Rg2=+) 19.Ke2 (19.b5 Nd7 20.ba6 Nc5=+) 19...Rc7 (19...Nd7 20.Bc1=+) 20.a4 (20.b5 Nd7=+) 20...Qc8 (20...Qf6 21.a5 Nd7 22.Rg3=+) 21.Ra2 Nc4 22.Ba1 f6 (22...Kh7 23.Rc2=+) 23.a5 (23.Rc2 Rff7=) 23...h5 (23...Be8 24.Rc2=) 24.Rc2 Be8 (24...h4 25.Na4 Be8 26.Rc4 Ba4 27.Rc7 (worse 27.Qa4 Rc4 28.Kf3 Rc7–/+) 27...Bb3 28.Rc8 Rc8 29.Bb2=) 25.Nb1 (25.gh5 Bh5 26.Ke1 Ne3 27.fe3 Qh3=+) 25...Bb5 26.Bc3 (26.h4 Bh4 27.Rc3 Bg5 (27...hg4?! 28.Rg2–+) 28.gh5 Qh3–/+) 26...Kf7 (better 26...Qd7 27.Ra2 h4=+) 27.Na3?? (better 27.Bd2 Nd2 28.Rc7 Qc7 29.Nd2 Bd3 30.Qd3 hg4 31.hg4+=) 27...Na3–+ 28.Qa3 Bd3 29.Kd3 hg4 (29...Qd7 30.Ke2 Qb5 31.Ke1–+) 30.hg4? (30.h4 Bh4 31.b5 f5–+) 30...Rh8 (better 30...Qd7 31.Ra2 Qb5 32.Kc2 Rfc8–+) 31.f3? (better 31.Ke2 Rc4 32.Qb3 Re4 33.Kf1–+) 31...Qd7 32.Rcg2 Qb5 (32...Rh3 33.Kc2 Rf3 34.Kb2–+) 33.Kc2 Be3 34.Rd1 Bd4 35.Rd3 Rhc8 0–1. Stavrev,Ludmil (2040) – Panchev,Pavel (2320), Sofia BUL, Team Ch B group – qual., 2010.

7.Nc3 Nbd7 8.Nf3= c6 9.0-0 Re8 10.Nh4 Be6 11.Qc2 Nf8 12.Nf5= Bf5 13.Qf5+= Qd7 14.Qc2 Ng4 15.Rfd1 Nh6 16.d4 ed4 17.Rd4 Bf6 18.Rd2 Be5 19.Rad1 Rad8 20.f4 Bc3 21.Qc3 f6 22.h3 Qe6+= 23.Rd3 d5 24.cd5 cd5 25.Rd5 Rd5 26.Rd5 Qe3 27.Qe3 Re3 28.Bc4 Nf7 29.Kf2 Re7 30.a4 Nd7 31.a5 a6 32.b5+- ab5 33.Rb5 Nb8 34.Bd5 Kh8 35.Rb7 Rb7 36.Bb7 Nd8 37.a6 Nbc6 38.Bd4! Kg8 39.Bc6 Nc6 40.a7 Na7 41.Ba7 Kf7 42.Ke3 Ke6 43.g4 g6 44.Bd4 f5 45.g5 Kd5 46.Bc3 Kc4 47.Bb2 Kd5 48.Kd3 Kc5 49.Ba3 Kd5 50.Bb4 (50.Bb4 Kc6 51.Kc4+-) 1–0. Johnston,R – Sundeen,D, Grand Rapids, 1989.

7.Nc3 e4 8.d3 Nbd7 9.de4 Ne4 10.Ne4 Be4 11.Nf3 Bf6 12.Qd2 Bb2 13.Qb2 Qf6 14.Qf6 Nf6 (< 14...gf6 15.Nd4+/-) 15.0-0 Rad8 16.Rac1 Rfe8 17.c5 dc5 18.Rc5 Rc8 19.Rfc1 c6 20.Nd4 Rcd8 21.Bf3 Bf3 22.gf3 Rd6 23.b5 Nd7 24.R5c3 c5 25.Nf5 Rf6 26.Rd1 Ne5 27.f4 Rf5 28.fe5 Rfe5 29.Rcd3 Kf8 30.Rd7 R5e7 31.Re7 Ke7 (31...Re7?! 32.Rd8 Re8 33.Rd7=) 32.Kf1 Rd8 33.Rd8? (better is 33.Rc1!? b6 34.Ke2–/+) 33...Kd8–+ 34.Ke2 Kd7 35.e4 Kd6 36.Kd3 g5 37.a4 b6 38.h3 Ke5 39.Ke3 f6 40.f3 h6 41.h4 (41.Ke2 Kd4 42.Kd2 Kc4–+) 41...c4 (better is 41...gh4!? 42.f4 Ke6 43.Kf3–+) 42.hg5 fg5 43.Kd2 Kd4 44.e5 (44.Ke1 h5 45.Ke2 c3–+) 44...Ke5 45.Kc3 Kd5 0–1. Hoefler,Christian – Rosinus,Karl, Westpfalz op, 1998.

7.d3 Qd7 8.h3 (8.Nf3 Rd8=) 8...e4 (8...Rd8 9.Nf3=) 9.d4 (9.de4 Ne4 10.Bd3 Re8=) 9...d5=+ 10.c5 c6 11.a4 b5 (11...Na6 12.Ba6 ba6 13.Na3=+) 12.Nc3 (12.ab5!? cb5 13.Nc3+=) 12...ba4= 13.Ra4 Qc7 14.b5 Bc8 (14...cb5 15.Bb5 Bd7 16.Bd7 Nbd7 17.Nge2=) 15.Qb3 (15.Qa1 Qb7 16.b6+=) 15...Bb7 (15...cb5 A) 16.Nd5? Nd5 (16...ba4?! 17.Nc7 ab3 18.Na8-+) 17.Bb5 Be6-+; B) 16.Nb5?! Qb7=; C) worse 16.Qb5 Nc6 17.Qb3 Rb8=+; D) 16.Bb5?! Bd7=; E) 16.Ra1=) 16.Bd1 (16.Ra7 cb5 17.Ra8 Ba8+=) 16...Nfd7 (16...cb5 17.Nb5 Qd7 18.Nc3=+ (18.Ra7? Ra7 19.Na7 Ba6-+)) 17.Nge2 (better 17.Ra7! Ra7 18.b6+/-) 17...Bc5= 18.Qa2 (18.dc5 Nc5 19.Qa2 Na4 20.Ba4 Rd8=+) 18...Bb6=+ 19.Nf4 (19.bc6 Qc6 20.Nf4 Nf6=+) 19...Nf6 20.0-0 (20.bc6!? Qc6 21.0-0=+) 20...Qd7-/+ 21.Be2 (21.bc6 Bc6 22.Ra3 Bc7-/+) 21...Rd8 (21...g5 22.Nh5 Nh5 23.Bg4-+) 22.Ba3 (22.Rb4 cb5 23.Rb5 Bc6-/+) 22...cb5 (22...g5 23.Nh5 Nh5 24.Bh5 cb5 25.Rb4-/+) 23.Bb5-/+ Bc6 24.Bc6 Qc6 25.Rc1 a6?? (better 25...Qd7=) 26.Be7 (26.Ncd5 Qa4 27.Nb6 Qa5 28.Na8 Nbd7+/-) 26...Rd7 27.Bf6 gf6 28.Nce2 (28.Rc2!? Qb7 29.Nfd5 Bd8+-) 28...Qd6 (28...Qb7!?+/-) 29.Ng3+- Bd4?? (better 29...Rc7 30.Rc7 Bc7 31.Nd5 Ra7+-) 30.Rd4 Nc6 31.Rd5 (31.Rd5 Nb4 32.Rd6 Na2 33.Ra6+-) 1-0. petrobbo (2045) - Rank_outsider (2150), ChessWorld.net, 2015.

7.d3 Nbd7 8.Nd2 a5 9.b5 (9.Ngf3 c6=) 9...Nc5 10.e4 Nfe4?? (better 10...Bg4! 11.Qc2 c6=) 11.de4 Ne4 12.Ne4 Be4 13.Nf3 Bd3?? (better 13...Re8+/-) 14.Bd3+- Bg5 (14...f5 15.c5!+-) 15.h3 (15.Be4 Rb8+-) 15…Bd2 (15...Bd2 16.Qd2 Qf6+-). opperwezen (2650) - xuanet (2500), Yearly Crazyhouse Arena, lichess.org, 2017.

7.Nf3 h6 (7...a5 8.0-0=) 8.Nc3 Re8 0–1. Pech,Jaroslav – Ramos,Francis, FICGS, 2016.

7.Nc3 Bg4 8.Be2 Nbd7 9.0-0 Qc7 10.d4 h6 (10...a5 11.Qd3=) 11.e4+= a5 12.b5 Nb6 13.bc6 bc6 14.Nd2 ed4 15.Bg4 dc3 16.Bc3 Nbd7 (16...d5 17.Bf5=) 17.Bf5+= Nc5 18.Qc2 Nfd7 19.Rad1 Rab8 20.f4 White intends e5 20...Bf6 21.Bf6 Nf6 22.Nf3 Rfd8 23.e5 de5 24.fe5 Rd1 25.Rd1 Nfd7 26.Qf2 Ne6 27.Be6 fe6 28.Qd4 Qb6 29.Qb6 Nb6 (29...Rb6?? 30.Rd7 Rb1 31.Kf2+-) 30.Rb1 Nd7 31.Rb8 Nb8 32.Kf2 Kf7 33.Nd4 Ke7 34.c5 Kd7 (34...a4!?+=) 35.a4+/- Na6 (35...Kc8 36.Ke3+/- (worse 36.Ne6 Na6+/-)) 36.Nb3+- Kc7 37.Ke3 (37.Na5 Nc5 38.Nc4 Na4-/+) 37...Nb4 38.Na5 Nd5 39.Kd4 Nf4 40.g3 Ne2 41.Kd3 Nc1 42.Kd2 (42.Kc4 g5+-) 42...Na2 43.Nb3 Nb4 44.h4 Kd7 45.a5 Na6 46.Ke2 Nb4 47.Kf3 Na6 48.Kg4 g6 49.h5 g5 50.Kf3 Kc7 51.Ke3 Kd7 (51...Kb7 52.Kd4+-) 52.Kd4 Nb4 53.Kc3 Na6 54.Kc4 Nc7 55.Nd4 Nd5 56.a6 Nc7 (56...Ne3 57.Kb4 Kc7 58.Ne6 Kb8 59.Ng5+-) 57.a7 Na8 58.g4 Nc7 59.Kb4 Na8 (59...Kc8 60.Ne6! Nd5 61.Ka5 Kb7 62.Ng5 Ka7+-) 60.Ka5 Nc7 (60...Kc7 61.Ka6 Kc8 62.Ne6 Kd7+-) 61.Kb6 Nd5 62.Kb7 Nc7 63.Nc6 (63.Nc6 Ke8 64.Kc7 Kf8 65.a8Q Kf7 66.Kd7 Kg7 67.Ne7 Kf7 68.Qg8) 1-0. marekt (2260) - fixxxer (2255), gameknot.com, 2021.

7.Be2 Nbd7 8.0-0 d5 9.c5 e4 10.Nd4 Ne5 11.d3 ed3 12.Bd3 Nd3 13.Qd3 Ne4 14.Nd2 Bf5?? 15.Nf5+- (15.Nf5 Bf6 16.Qc2 Nd2 17.Qd2+-) 1–0. Fournier,Frederic (1990) – 04x04 (2030), Echecs21, 2003.

7.Be2 e4 8.Nd4 d5 9.cd5 cd5 10.Nc3 Nc6 11.Nc6 bc6 12.d3 ed3 13.Bd3 Bg4 14.Be2 Bf5 15.0-0 Qd7 16.Bd3 Bg4 17.Be2 Bf5 18.Rc1 Bd6 19.g3 Bh3 20.Re1 Ng4 21.Bf1 Ne5 22.f4 Bg4 23.Be2 Be2 24.Qe2 Nc4 25.Na4 Rfe8 26.Bd4 c5?? 27.bc5 Bc5?? 28.Nc5+- (28.Nc5 Qe7 29.e4 Na3 30.Qg4+-) 1–0. Fournier,Frederic (1830) – cobero, Active, 2011.

7.Be2 Be6 8.0-0= Nbd7 9.d4 Qc8 10.Nc3 Nb6 11.c5 dc5= 12.dc5 Rd8 13.Qc2 Nbd5 14.Nd5+/- Bd5 15.Ne5 Be4 16.Qb3 Bd5 17.Bc4 Bc4 18.Qc4 Nd5? 19.e4+- Nf4 20.Qf7 Kh8 21.Qf4 Rf8 22.Qg3 Bf6 23.Rab1 Be5 24.Be5 Rf7 25.Rfd1 Qe6 26.Rd6 Qa2 27.Rbd1 Re8 28.Rd8 Qf2 29.Qf2 Rf3 30.Re8 (30.Re8 Rf8 31.Rf8) 1–0. erisonpassos – maldonadoeloy, kurnik, 2011.

7.Be2 Bg4 8.0-0 Nbd7 9.Re1 Bf3 10.Bf3 d5 11.cd5 cd5 12.Nc3 Nb6 13.d3 Rc8 14.Rc1 e4? 15.de4+- de4 16.Ne4 Ne4 17.Be4 Nc4 18.Qd8 Rfd8 19.Bd4?? Nd6? 20.Bf3 b6 21.Rc8 Rc8 22.h3 Nb5 23.Bb2 Rc2 24.Rb1 Kf8 25.Be4 g6?? 26.Bc2+- 1–0. erisonpassos – atombrno, kurnik, 2011.

7.Be2 Bg4 8.d3 Nbd7 9.Nbd2 h6 10.0-0 Re8 11.e4 Bf8 12.h3 Bh5 13.Nh4 Be2 14.Qe2= g6 15.Nhf3 Nh5 16.g3 Qe7 17.Kg2 Bg7 18.Rac1 Nf8 19.c5 Ne6 20.cd6?? Qd6 21.Nc4?? Qc7 22.Be5?? Be5–+ 23.Nce5?? Nhf4! (23...Nhf4 24.gf4 Nf4 25.Kh1 Ne2–+ (25...Re5?! 26.Qe3 Rh5 27.h4=+)) 0–1. Fournier,Frederic (1605) – nacholee, Active, 2007.

7.b5 Na5=+ 8.Be2 (8.Qa4 c5 9.Bc3=+) 8...b6 (8...a6!?–/+) 9.0-0= Bb7 (9...a6 10.a4=) 10.d3 c6 11.a4 cb5 (11...Qd7 12.Nbd2=) 12.cb5 (better 12.ab5!? Qd7 13.Nc3+=) 12...Rc8 Black prepares the advance e4 13.Nbd2 e4 (better 13...Qd7!?=+) 14.de4 Ne4 15.Ne4 Be4 16.Bd3 (16.Qd4 Bf6 17.Qe4 Bb2+=) 16...Bd3 (16...d5 17.Qe2=) 17.Qd3 Bf6 18.Bf6 Qf6 19.Rad1 Rfd8 20.Nd4 Nb7 (20...Rc5!?=) 21.Nc6+= Rd7 22.Qd2 (22.Qd5 Nc5+=) 22...Nc5 23.a5 Ne4 (23...Qe6 24.ab6 ab6 25.Qd5+=) 24.Qc2 d5? (better 24...Nc5+=) 25.Rd5?? (better 25.ab6 ab6 26.Ne7 Qe7 27.Qc8 Rd8 28.Rc1+-) 25...Rd5=+ 26.Qe4 Rd7 27.ab6 ab6 28.Qg4 Rdc7 (28...Rcc7 29.Qa4 g6 30.e4=+) 29.Rc1 (better 29.e4=+) 29...Rc6?? (better 29...Ra8–/+) 30.bc6 (30.Qc8 Rc8 31.Rc8 Qd8 32.Rd8) 30...Rc6?? (30...Qd8+-) 31.Rb1 (31.Qc8! Rc8 32.Rc8 Qd8 33.Rd8) 31...Qc3 32.Rd1 g6 33.h3 b5 34.Qe2 b4 35.Qd3 (35.Qb5 Rc8=) 35...Qd3 (35...Kg7 36.Qc3 Rc3 37.Rd6=+) 36.Rd3=+ Rc3 (36...Rb6 37.Rd1=) 37.Rd1 (37.Rd8!? Kg7 38.Rb8=) 37...b3=+ 38.Rb1 (38.Rd8 Kg7 39.Rb8 Kf6=+) 38...Kf8–/+ 39.Kf1 Ke7 40.Ke1 Kd6 41.Kd1? (better 41.Kd2 Rc2 42.Kd3 Rf2 43.Rb3 Rg2 44.Rb6 Ke7 45.Rb4–/+) 41...Kc5–+ 42.Rb2 (42.e4 Kb4 43.Ra1 b2–+) 42...Kb4 43.Kd2 f5 (43...Rc8!? 44.e4–+) 44.f4 (44.f3 Rc5 45.Rb1 Rc2 46.Kd3 Rg2–+) 44...Kc4 (better 44...Rc5 45.g4 Ka3–+) 45.g4 fg4 (better 45...h6!?–+) 46.hg4–/+ Rd3 (46...Kb4–/+) 47.Ke2? (47.Kc1 Re3 48.Rf2 Re7=+) 47...Rc3 (better 47...Rd5 48.Rb1 Ra5–+) 48.f5 (48.Kd2!? h6 49.f5=+) 48...gf5 49.gf5 Rc2?? (better 49...Kb4 50.Rb1 Ka3=+) 50.Rc2+- bc2 51.Kd2 Kb3 (51...Kd5 52.e4 Ke5 53.Kc2 h5+-) 52.Kc1 h5 53.f6 h4 54.f7 (54.f7 h3 55.f8Q+-) 1–0. retiponziani (1800) – Norfolk Blue (1825), ChessWorld.net, 2014.

7.Nc3 Bg4 8.h3 Bh5 9.g4 Bg6 10.Nh4 d5 11.cd5 (11.Ng6 fg6 12.cd5 Nb8+/- (12...Nd5?? 13.Bc4+-)) 11...Nd5 12.Ng6 hg6 (12...fg6?? 13.Bc4+-) 13.Bc4 (13.Bg2 Nb6+/-) 13...Nc3 (13...Nb6 14.d3=) 14.Bc3+/- Bf6 15.Qc2 Kh8 (15...g5 16.b5 Ne7 17.Qe4+/-) 16.h4! e4 (16...Bh4 17.g5 Pinning (17.g5 Decoy)) 17.Qe4 Bc3 18.dc3 Qf6 19.Rc1 Rad8 20.g5 Qd6 21.0-0 Ne5 (21...Rfe8 22.Qf4 Ne5 23.Rfd1 (23.Bf7?! Rf8 24.Rcd1 Qd1 25.Rd1 Rd1 26.Kg2 Nf7=+) 23...Qd1 24.Rd1 Rd1 25.Kg2+/-) 22.Be2 (22.Rfd1 Qd1 23.Rd1 Rd1 24.Bf1 Nc6+-) 22...c6+/- 23.Rfd1 Qe6 (23...Qc7 24.Rd8 Rd8 25.Rd1 Rd1 26.Bd1+-) 24.Kg2 (24.f4 Qa2 25.Rd8 Rd8+-) 24...Rde8 25.Rd4 f5 26.Qf4 (26.Qb1 Ng4 27.Re1 b5+/-) 26...Ng4? (better 26...Qa2!? 27.Kf1 b5+=) 27.Rcd1 (better 27.c4+-) 27...Qe5? (better 27...Qa2!? 28.Bg4 fg4+-) 28.Qe5 (better 28.Bg4!? fg4 29.Qe5 Re5 30.Rg4 b5+-) 28...Ne5 (28...Re5?? 29.Bg4 fg4 30.Rg4+-) 29.c4 Kh7 30.c5 Re7 31.Rf4 (31.a4 b6+-) 31...Rfe8 32.Rh1 Rd8 33.h5 (33.Rd4 Red7 34.Rhd1 a6+-) 33...Kg8? (33...Rd2 34.Kf1 gh5 35.Bh5 g6 36.Be2 Kg7+/-) 34.hg6+- Ng6 35.Rf5 Re5 (35...Ne5+-) 36.Bc4 Rdd5 37.Bd5 cd5 (37...Rd5 38.Rd5 cd5 39.Rd1+-) 38.Re5 Ne5 39.Rd1 1-0. allyouneedisluft (2640) - Dark_Fenix (2265), Hourly Bullet Arena, lichess.org, 2017. (=1.a3 d6 2.b4 e5 3.Bb2 Nf6 4.e3 Be7 5.Nf3 0-0 6.c4)

7.Be2 a5 8.b5 Nb8 9.Qc2 b6 10.0-0 Be6 11.Nc3 Qd7 12.d4 e4 13.Ne4+- Ne4 14.Qe4 Ra7 15.Bd3 f5 16.Ne5?? de5–+ 17.Qe5 Bf6 18.Qg3 g6 19.d5?? Bb2–+ 20.Rab1 f4 21.ef4–/+ Bg7 22.de6 Qe6 23.Rfe1 Qd6 24.Rbd1 c6 25.a4 Raf7 26.f5 Qg3 27.hg3 gf5 28.Re6 Rf6 29.Re5 c5 30.Rde1 Nd7 31.Re7 R8f7 32.Re8 Bf8 33.Be2 Re7 34.Re7 Be7 35.Bf3 Bf8 36.Bd5 Kg7 37.Re8 f4 38.gf4 Rf4 0–1. Fournier,Frederic – staszek2010, kurnik.com, 2009.

7.Be2 b6 8.d3 Bb7 9.Nbd2 g6 10.0-0+= h5 11.e4 Kg7 12.Re1 Rh8 13.Nf1 Rh7 14.Ng5 Rh8 15.Qd2 Qd7 16.f4 ef4 17.Qf4 Nd8 18.Ne3 Ne6 19.Ne6 fe6 20.Rf1 Raf8 21.Qg3 e5 22.Nf5 Kf7 23.Ne7 Qe7 24.Rf2 Kg7 25.Bc1 a5 26.b5 Rf7 27.Bg5 Qf8?? 28.Raf1+- Ng8 29.Rf7 Qf7 30.Rf7 Kf7 31.Qf3 Kg7 32.g4 c6 33.a4 cb5 34.cb5 Bc8 35.gh5 gh5 36.Bd8 h4 37.Bb6 Ne7 38.Ba5 Rg8 39.Kh1 Be6 40.Bb4 Kh6 41.Bd6 Bb3 42.Be7 Ba4 43.Qf6 Rg6 44.Bf8 Kh7 45.Qf5 Bb3 46.Bh5 Bf7 47.Qf7 Rg7 48.Qg7 1–0. Fournier,Frederic – Chicot,Patricia, Active Game France (FRA), 2006.

7.Nd4 c6 8.Nc3 d5 9.cd5 cd5 10.Qb3 a6 (10...Nc6 11.Nc6 bc6 12.d3+=) 11.Be2 Nc6 12.Nc6 bc6 13.0-0 Be6 14.d3? (better is 14.Qc2!?=) 14...ed3 15.Bd3 Rb8?? (better is 15...d4 16.Qc2 dc3 17.Bc3 h6–/+) 16.Qc2+= (worse is 16.Ba6 d4 17.Qc2 dc3 18.Bc3 Qc7+=) 16...c5 17.bc5 Bc5 18.Rab1 Qd6 19.Ne2 Ba3 (19...Ne4 20.Be4 de4 21.Qe4+=) 20.Bf6+/- Rb1 (20...gf6 21.Bh7 Kg7 22.Bd3+/-) 21.Rb1 gf6 22.Bh7 Kg7 23.Bd3 a5 24.Nd4 Bb4 25.Ra1 Rh8 26.g3 Qe5 27.Qb1 f5 (27...Qh5 28.h4+= (28.Ne6?! fe6 29.h4 Qe5=)) 28.Bf5 (28.Nf5 Bf5 29.Bf5 d4 30.ed4 Qd4+/-) 28...Bf5 29.Nf5 Kf6 30.Nh4 Bc3 31.Ra2 Qg5 (31...Bb4 32.Rc2+/-) 32.Qb6 (32.Rc2 Qe5+-) 32...Kg7+/- 33.Qd6?? Rh4–+ 0–1. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013.

7.Nd4 Nc6 8.Nc6+= bc6 9.d4 (9.Nc3 a5+=) 9...d5 (9...a5 10.Nc3+=) 10.Nc3= a5 11.b5 cb5 12.cb5 Be6 (12...Qd7 13.Be2=) 13.Be2= Bd6 14.0-0 Nd7 15.Na4 Qh4 (15...Qg5 16.g3+=) 16.g3 Qg5 17.Qd2 (17.Rc1 Rfb8=) 17...Bh3 18.Rfc1 f5 19.Bf1 Bf1 20.Kf1 Qg4 21.Rc3? (21.Nc5 Qh3 22.Kg1–/+) 21...Qh3 (21...Rab8 22.Nc5 Qh3 23.Ke1–+) 22.Kg1–/+ Rf6 23.f4? (better is 23.Rf1 Rb8 24.f4 ef3 25.Rf3 Rb5 26.Rc1–/+) 23...ef3–+ 24.Qf2 Rh6 25.Rc2 Bg3! 26.Qf3 (26.Qg3 Rg6 Decoy; 26.hg3 Qh1#) 26...Bh2 27.Kf2 Qf3 28.Kf3 g5 0–1. Feofanov,Alexander – Bereziy,Petr, 2012.

7.Nd4 d5 8.cd5 Qd5 9.Nc3 Qe5 10.Be2 b6 11.0-0 c5= 12.bc5 bc5 13.Nb3 c4 14.Nd4+= Bc5 15.Bc4 Bd4 16.ed4 Qd4 17.Qe2 Re8 18.Rfe1 Bg4 19.Qf1?? Nc6 20.h3 Bf5 21.Bb5 Rac8?? 22.Rad1?? Re7 23.Ba6 Rb8=+ 24.Ba1 Rb6?? 25.Be2?? Ne5= 26.Nb5 Qd7 27.Be5 Re5 28.d3?? e3?? 29.d4 Rd5 30.fe3 Be6 31.a4 Ne4? 32.Bf3 Ng3 33.Qf2 Rg5 34.Kh2 a6+/- 35.Nc3?? Rb3?? 36.Ne4 Rf5?? 37.Qg3+- Rb4 38.Nc5 Qe7 39.Ne6 fe6 40.Rb1 Ra4 41.Ra1 Rg5 42.Qb8 Kf7 43.Ra4 Qf6 44.Ra6 e5 45.Rf6 gf6 46.de5 fe5 47.Qc7 Kg6 48.Qd6 Kf5 49.Bg4 Ke4 50.Qb4 Kd5 51.Bf3 Ke6 52.Rf1 Kf6 53.Bg4 Kg6 54.Qd6 Kg7 55.Qe7 Kh6 56.Qf6 Rg6 57.Qh4 Kg7 58.Bf5 Rf6 59.e4 Rh6 60.Qg5 Rg6 61.Bg6 hg6 62.Qe7 Kh6 63.Rf7 Kh5 64.Rh7 1–0. Fournier,Frederic – Javier78, Club Owl21 Owl21.com, 2007.

8.Nc2 cb4 9.ab4 Nc6 10.Be2 a6 11.0-0 Ne5 12.d4 Ned7 13.Nc3 b6 14.f3 Bb7 15.fe4 Ne4 16.Ne4 Be4+= 17.Bf3 Bf3 18.Qf3 Nf6 19.Qb7 Qd7 20.Qd7+= Nd7 21.e4 Nf6 22.e5 de5 23.de5 Ne4 24.Rfd1 a5 25.Rd4 f5 26.ef6 Nf6 27.Bc3 ab4 28.Ra8 Ra8 29.Bb4 Bb4 30.Nb4 Kf7 31.Kf2 Ra4 32.Nc6 b5 33.cb5+- Ra2 34.Kf3 Rb2 35.Rb4+/- Rc2 36.h3 Rc3 37.Kf2 Ke8 38.Rb2 Kd7 39.Nd4 Kc7 40.b6 Kb7 41.Ne6 Rc6?? 42.Nd8+- (42.Nd8 Kb8 43.Nc6 Kb7 44.Na5 Ka6 45.b7+-) 1–0. Wall,Bill – TheBoss, internet, 2004.

8.Nc2 d5 9.bc5 Na6 10.cd5 Nc5 11.d6 Qd6 12.Nd4 Bg4 13.Qc2 Rac8 14.Nc3 Ne6 15.Ne6 Qe6 16.h3 Bf5 17.Qa4 Nd7 18.Nb5 Nc5–/+ 19.Qd4?? Bf6–+ 20.Qb4 Na6 21.Nd4 Nb4 22.Ne6 Be6 23.ab4 Bb2 24.Ra7 Rc1 (25.Ke2 Bc4 26.d3 Bd3 27.Kd2 Bf1 28.Ra8 Ra8 29.Rf1 Rd8 30.Ke2 Rc2 31.Ke1 Bc3) 0–1. kiloracer (2175) – rdarmi (2100), net–chess.com, 2005.

8.bc5 dc5–/+ 9.Nb3 Bg4 10.Be2 Be2–/+ 11.Qe2 Qb6 12.Qd1 Nc6 13.Ra2 Qc7 14.Nc3 Ne5–/+ 15.d4? Nd3–+ 16.Ke2? cd4 17.ed4 Nb2 18.Rb2 Qc4 19.Kd2 0–1. mgriffin – gstevenson (1795), net–chess.com, 2001.

8.bc5 dc5 9.Nb5 Nc6 10.Be2 Qd7 11.0-0 a6 12.N5c3 Qe6 13.f3 ef3 14.Bf3 Qc4 15.d4? cd4–+ 16.Nd2 Qd3 17.ed4 Nd4 18.Rc1 Rd8 19.Nde4 Qe3 20.Kh1 Nf3 21.Qf3 Qf3 22.Rf3 b5 23.Nc5 Bc5 0–1. Fournier,Frederic (1730) – Patoufet, rated blitz game (7/0), 2002.

8.Ne2 Nc6 9.Nbc3 cb4 10.ab4 Nb4 11.Nd4 d5–/+ 12.Qb3 Nd7 13.Nd5 Nc5 14.Qc3 Ncd3 15.Bd3 Nd3 16.Ke2 Nb2 17.Qb2 Bc5 18.Rhd1 Qd6 19.h3 Rd8 20.Kf1 Qh2 21.f4 a6 22.Rdb1 Kh8 23.Qc3 Rd6 24.f5 Bd4 25.Qd4 Bf5–/+ 26.Kf2 Rd7 27.Rh1 Qb8 28.g4 Be6 29.Qe4 Qd8 30.Rhb1 b5 31.d4 Bd5 32.cd5 Rd5 33.Rc1 h6 34.Rc5 Rc5 35.dc5 a5 36.Rd1 Qf8 37.Rd7 b4 38.c6=+ Re8 39.Qd3 Qc5 40.c7 Rg8 41.Qb3 Qe5 42.Qf7 Qh2 43.Ke1 Qg3 44.Ke2 Qg2 45.Kd3 Qh1 46.Qg8!! Kg8 47.c8Q Kh7 48.Qc2 b3 49.Qb3 Qh3 50.Qe6 Qf1 51.Kd4 Qd1 52.Kc5 Qc2 53.Kb5 a4 54.Qf5 Qf5 55.gf5 Kg8 56.Ra7 a3 57.Ra3 Kf7 58.e4 Kf6 59.Rd3 Ke5 60.Re3 Kd4 61.Re1 Ke5 62.Kc5 h5 63.Kc4 h4 64.Kd3 h3 65.Rh1 h2 66.Rh2 Kf6 67.Rh7 Kf7 68.Rg7! Kg7 69.Kd4 Kf7 70.Kd5 Ke7 71.e5 Kf7 72.f6 Ke8 73.Kd6 Kf7 74.e6 Kf6 75.e7 Kf5 76.Kd7 Kf4 77.e8Q Kf3 ½–½. Fournier,Frederic (1945) – ElGranBoby(C) (2045), Active, 2006.

8.Ne2 d5 9.cd5 cb4 10.ab4 Na6 11.Bf6 Bf6 12.Nbc3 Nb4 13.Nf4 (13.Ng3 Nd5 14.Nge4 Nc3 15.dc3 Be5=+) 13...Be5–/+ 14.Bc4 Qc7 15.Qb3 a5 16.0-0 Bf5 17.Nb5 Qb6 18.Rac1 Bd7 19.Nc3 Bf4 20.ef4 Qd4 21.Rfe1 f5 22.Red1 Kh8 23.Ne2 Qc5 (23...Qf6 24.Nc3–/+) 24.Qe3 (24.d3 b5 25.de4 bc4 26.Rc4 Qb6–+) 24...Qe3 25.de3 b5 26.Bb3 a4 27.Bc2 Rfc8 28.Rd2 (better 28.Bb1!?–/+) 28...Rc5–+ 29.Bd1 (29.d6 Rac8 30.Nd4 Rd5–+) 29...Rd5 30.Nd4 Nc6! 31.Kf1 (31.Rc6 Bc6 Combination; 31.Nc6 Rd2 Pinning (31...Rd2 Deflection)) 31...Nd4 32.ed4 b4 33.Ra1 0–1. Pereira – Djadd, internet, 2020.

7.Be2 Nc6 8.0-0 a6 9.d3 h6 10.Nbd2 Qd7 11.Ne4 Ne4 12.de4 Bg4 13.Rc1 Bf6 14.b5 ab5 15.cb5 Ne7 16.Ne5 de5 17.Bg4 Qd1? (better 17...Qb5 18.Qc2 Rfd8+=) 18.Rfd1+- c6 19.Rd7 cb5 20.Rc5 b6 21.Rb5 Rfb8 22.Be2 (worse 22.Be5 Be5 23.Re5 Ng6+/-) 22...Ng6 (22...Ra5 23.f4+-) 23.Bc4 Rf8 (23...Be7 24.h4 (24.Be5?! Rc8 25.Bf1 Ba3+/-) 24...h5 25.Bd5+-) 24.Rb6 Rac8 25.Bb3 Ra8 26.a4 Ne7 27.g3 Nc8 (27...Rfb8 28.a5!+-) 28.Rbb7 1-0. marekt – hansson, ChessWorld.net, 2020.

7.Be2 Nbd7 8.Qc2 c6 9.0-0 Rc8 10.d4 ed4 11.ed4 Bf5?? 12.Bd3 Bd3= 13.Qd3 d5 14.c5 Re8 15.Nbd2 Nf8 16.Ne5 Ng6 17.f4 Bf8 18.Rae1 Rc7 19.Bc1 Rce7 20.h3 Ne4 21.Ne4 de4 22.Re4 f6 23.Qc4 Qd5 24.Rfe1?? Qc4–+ 25.Nc4 Re4 26.Rf1 Rd4 27.Ne3 Ree4 28.Ng4 Nf4 29.Nf2 Ne2 30.Kh2 Re6 31.Be3 Re3 32.Re1 Rd8 33.Ng4 Re6 34.h4 Rde8 35.Nf2 g6 36.Rf1 f5 37.Nd3 Bg7 38.g3 Re3 39.Nb2 Ng3 40.Kg2 Nf1 41.Kf1 Re2 42.Nd3 Rd2 43.Nf2 Ree2 44.Ng4 fg4 45.h5 g3 46.hg6 Rf2 47.Kg1 Rd1 0–1. erisonpassos – guacuzao (1645), kurnik, 2011.

7.Be2 Nbd7 8.d3 Nb6 9.Nc3 h6 10.0-0 Qd7 11.b5 a6 12.a4 ab5 13.ab5 Nh7 14.Qc2 Bf6 15.e4 c6 16.Ra8 Ra8 17.Ra1 Ra1 18.Ba1 d5 19.bc6+= bc6 20.cd5 cd5 21.ed5 Nd5 22.Nd5 Qd5 23.Qc4 Qf3 24.Bf3 Bc4 25.dc4 Ng5 26.Be2 Ne6= 27.g3 Nc5 28.Bc3 Kf8 29.Kg2 Ke7 30.Bb4 Kd6 31.Bf3 Be7 32.Bd5 f6 33.Kf3 Kd7 34.Bc5 Bc5 35.Ke2 Kd6 36.f3 g5 37.g4 Bg1 38.h3 Kc5 39.Kd3 Kd6 40.Ke4 Ke7 41.Kf5 Bf2 42.Kg6 Be3 43.Kh6 Bf2 44.Kg6 Be3 45.Kf5 Bf2 46.Ke4 Bd4 47.Kd3 Kd6 48.Kc2 Kc5 49.Kd3 Kd6 50.Ke4 Ke7 51.Bg8 Kf8 52.Bd5 Ke7= ½–½. Fournier,Frederic (1870) – copii (1765), Active, 2011.

7.Be2 Nbd7 8.d3 c5 9.b5 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 b6 13.Nbd2 d5 14.Qa4 dc4 15.dc4 e4 16.Ng5 h6 17.Ne6+/- fe6 18.0-0 Qc7 19.Rd1 Ne8? 20.Ne4+- Ndf6 21.Nf6 Bf6 22.Bf6 Nf6 23.f3 e5 24.e4 Nh5 25.Kf2 Nf4 26.Qa6 Rf6 27.Qa8 Kh7 28.Qd5?? Rg6 29.Qd7 Qd7 30.Rd7 Rg2 31.Ke3 Re2 0–1. Fournier,Frederic (1925) – wua (1915), Active (2/0), 2004.

7.Be2 Nc6 8.0-0 a5 9.b5 Na7 10.d4 b6 (better is 10...e4!? 11.Nfd2 Be2 12.Qe2 d5+=) 11.de5+- Bf3? (better is 11...de5 12.Ne5 Qd1 13.Bd1 Bf5+/-) 12.Bf3 (12.gf3?! de5 13.Qd8 Rad8 14.Be5 Rd7+/-; < 12.ef6 Bf6 13.Bf3 Bb2+-) 12...de5 13.Ba8 Qa8 14.Nc3 (14.Be5!? Qc8+-) 14...Bd6 15.e4 (15.a4 Nc8+-) 15...Qc8 16.f3 Nh5 17.Bc1 Bc5 18.Kh1 Rd8 19.Qe2 Qe6 20.Be3 Be7 21.Nd5 Bd6 22.Rfd1 Qg6 23.Rg1 Nf4 24.Bf4 ef4 25.Rgd1 c6 26.bc6 Nc6 27.Rab1 Ne5? 28.Rb6 Bc5 29.Ne7! Be7 30.Rd8 Bd8 31.Rb8 Qd6–/+ 32.h3?? Qb8–+ 33.Kh2 h6 34.Qd2 Bg5 35.Qd6 Qd6 36.h4 Bh4 37.Kh3 Bg3 38.c5 Qe6 (38...Qd7) 0–1. slavisa11 – TheGuy, Live Game Caissa's Web, 2004.

7.Be2 Nc6 8.d4 ed4 (8...Bf3 9.Bf3 e4 10.Be2+=) 9.Nd4 (9.b5 Na5 10.Bd4 c5 11.bc6 Nc6=) 9...Be2 10.Qe2 Nd4 11.Bd4 c5 12.Bb2 (12.Bc3 d5=) 12...d5 13.bc5 Bc5 (13...dc4 14.Nd2=) 14.0-0 d4 (14...dc4 15.Qc4 Rc8 16.Qf4=) 15.Rd1+= Re8 16.Qf3 (16.Qf1 Ng4 17.Bd4 Qd6=) 16...Qb6 (16...Qa5 17.Nd2 (17.Bd4? Bd4 18.Ra2 Be5–+) 17...de3 18.Nb3 ef2 19.Kf1–+) 17.Bd4 Bd4 18.ed4 (18.Rd4?? Qd4 19.Ra2 Qc4–+) 18...Qd4 19.Nd2 (19.Rd4?? Re1) 19...b6 20.Rac1 Rac8 The isolani on c4 becomes a target (20...Rad8 21.Nb3 Qb2 22.Rd8 Rd8 23.a4=+) 21.h3 (21.Nf1 Qc5=+) 21...h6 (21...Qe5 22.Rc3=) 22.Nf1 (22.c5 bc5 (worse 22...Rc5 23.Nb3 Qe4 24.Nc5 Qf3 25.gf3 bc5 26.Rc5+-) 23.Nc4 Qe4=) 22...Qe4 (22...Qb2 23.Ne3=) 23.Qb3 (23.Qe4 Re4 24.Ne3 Kh7=) 23...Rc5 (23...Qf4 24.Ne3=+) 24.Ng3 (24.Ne3 Qf4=) 24...Qc6 (24...Qf4 25.Qc3=+) 25.Rd4 Rc8 (25...Nd7 26.Qd1 Ne5 27.Nf5=+) 26.Qd3= b5 (26...Qe6 27.Rc2=) 27.Nf5 Qe6 28.Ne3 bc4 29.Rdc4 Rc4 30.Nc4 (30.Rc4 Rc4 31.Qc4 Qd6=) 30...Qd5 (30...a6 31.Rc2=) 31.Qf1 Qc5 32.Rc2 Qf8 (32...Qd4 33.Ne3 Rc2 34.Nc2=) 33.Qd3 Qd8 (33...Qe7 34.Re2 Qc7 35.Ne3=) 34.Qe2 (34.Ne5 Qe8 35.Rc8 Qc8=) 34...Qe8 (34...Qd4 35.Ne3 Rc2 36.Nc2=) 35.Ne3 Rc2 36.Qc2 Qe7 37.a4 (37.Qd3 a5=) 37...Kf8 (37...Qe6 38.Qc5 a6 39.a5=) 38.Qc8 (38.a5 g6=) 38...Qe8 39.Qa6 (39.Qc4 Qe5=) 39...Qe7 (39...Qd7 40.Qb5=) 40.g3 (40.Qc6 Qd7 41.Qc5 Qe7 42.Qe7 Ke7 43.Nf5 Kf8=) 40...g6 41.a5 h5 (41...Kg7 42.Qd3=) 42.h4 (42.Qc6 Ne4=) 42...Ng4 (42...Kg7 43.Qd3=) 43.Ng4 (43.Qc8 Qe8 44.Qc5 Qe7=) 43...hg4 44.Qc8 Kg7 45.Qc3 Qf6 (45...f6 46.Kf1=) 46.Qb4 (46.Qc5 a6=) 46...Qa1 (46...Qe5 47.Kf1=) 47.Kg2 1–0. Bortnyk,Mykola (2415) – Voitovich,Vladislav (2350), Nebesna sotnya Mem Blitz, 2016. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.Nf3 Be7 5.c4 0-0 6.e3 Bg4)

7.Be2 Qd7 8.d3 h6 9.0-0 (9.Nc3 Nc6=) 9...a5 (9...Nc6 10.Nc3=) 10.h3 Bh5 11.Nc3 ab4 12.ab4 Nc6 (12...Ra1 13.Qa1 Na6 14.Qa3+=) 13.Ra4+= Ra4 (13...Rfe8 14.b5 Na5 15.Nd2 Be2 16.Qe2+=) 14.Qa4+/- b6 15.Ra1 Nd8? (better 15...Bd8!?+/-) 16.Qd7 Nd7 17.Nd5 Re8? (17...Bf6 18.Nc7 e4 19.Bf6 ef3 20.Bd8 fe2+/-) 18.Nc7 Kf8 (18...Rf8 19.Nd5 Bf6 20.Ra7+-) 19.Ne5 de5 20.Bh5 Nc6 (20...Bb4 21.Bf3+-) 21.Ne8 Ke8 22.Ra8 (22.Ra8 Bd8 23.Bc3+-) 1-0. Adlai – Gregory, internet, 2021.

7.Be2 Bf3 8.Bf3 c6 9.d3 Nbd7 10.0-0 h6 (10...Qb6 11.Nc3+=) 11.Nc3+= Nh7 12.g3 f5 13.Bg2 Bf6 14.b5 Qc7 15.Qh5 (15.Rb1 Rae8+=) 15...Be7 (15...Nc5!? 16.Qf5 Be7+=) 16.f4 Nc5 17.Rad1 1-0. pereira – bulldozer, internet, 2021.

7.Be2 Bf3 8.Bf3 c6 9.d4 e4 10.Be2 d5 11.c5 (11.0-0 a5 12.ba5 Qa5=) 11...Nbd7 (11...a5 12.ba5 Qa5 13.Bc3=) 12.0-0 h6 (12...b6 13.Qc2=) 13.Nc3+= Nh7 (13...Qc7 14.Qc2+=) 14.f3 ef3 15.Rf3 (15.Bf3 Ndf6+=) 15...Ndf6 16.Rf5 (16.Bd3 Ng5 17.Rf2 Qc7=) 16...Re8 (16...Ng5 17.Bd3+=) 17.Qd3 Ng5 18.Raf1 (18.b5=) 18...Nge4 (18...b5!?=) 19.Ne4+- Ne4 (19...de4 20.Qb3+-) 20.Rf7 Rf8 (20...b5 21.R7f5+-) 21.Rf8+- Bf8 22.Bf3 (22.Rf4 Qe7+-) 22...Ng5 (22...Nf6 23.e4 de4 24.Be4 Ne4 25.Qe4+-) 23.Bh5 Ne4 (23...Qe7 24.Bg6+-) 24.Qe2 (24.Bg6 Qh4+-) 24...Qg5+- 25.Qf3 (better 25.Bf7 Kh8 26.Rf4+-) 25...Nf6= 26.g4 Nh5 27.Qf7 Kh8 (27...Kh7 28.Qh5 Qe3 29.Rf2=) 28.Qh5 Qe3 29.Rf2 Re8 30.g5 Qg5 31.Qg5 hg5 32.Rf1 (32.Bc1 Re1 33.Rf1 Rf1 34.Kf1 Be7=+) 32...Be7 (32...Kg8 33.Kf2=+) 33.Rf7 (33.Re1!?=+) 33...Kg8 34.Rf5 (34.Rf2 Bd8–/+) 34...Bf6 35.Kf2 (35.Rf2 Re1 36.Kg2 g4–/+) 35...Kh7 (better 35...g4–+) 36.Kf3? (better 36.Kg2–+) 36...Kg6 37.Kg4 (37.Re5 Be5 38.de5–+) 37...Re4 38.Kf3 Kf5 39.h3 Bd4 40.Bc1 Re1 41.Bd2 Ra1 42.Ke2 Ra3 43.Ke1 Rh3 44.Kd1 g4 45.Ke1 g3 46.Kd1 (46.Kf1 Rh2 47.Ke1 g2 48.Kd1 g1Q 49.Kc2 Qa1 50.Kd3 Qd1 51.Kd4 Qd2) 46…g2 (46...g2 47.Bg5 g1Q 48.Kc2 Rc3 49.Kd2 Qf2 50.Kd1 Rd3 51.Kc1 Qb2; 46...Rh1 47.Ke2 g2 48.Kd3 g1Q 49.b5 Qd1 50.bc6 Rh3 51.Kd4 Qd2) 0–1. keene2019 – kieth155 (1740), gameknot.com, 2017.

7.Be2 h6 8.d4 e4 9.Nfd2 Bf5 10.Nc3 c6 11.0-0 Nbd7 12.f3 ef3 13.gf3 Bh3 14.Rf2 Nh7 15.Bf1 Bf5 16.e4 Bg6 17.Ne2 Bh4 18.Ng3 Bg3 19.hg3 Qg5 20.Rg2 Rae8? 21.f4+- Qh5?? 22.Qh5 Bh5 23.Be2 Be2+= 24.Re2 Nhf6 25.Rae1 Ng4 26.e5 de5 27.de5 h5 28.Nf3 c5 29.Bc3 cb4? 30.Bb4+- Rc8 31.Bf8 Kf8 32.Rc2 Nc5 33.Ree2 Ke7 34.Nd4 a6 35.Nf5 Kf8 36.Nd6 Rc7 37.Rb2 Rd7 38.Kg2 f6 39.Nb7?? Rb7= 40.Rb7 Nb7 41.ef6 Nf6 42.Rb2 Nc5 43.Rb8 Kf7 44.Rc8 Nfe4 45.Rc6 Kg8 46.Kf3 Kh7?? 47.g4?? hg4 48.Kg4 1–0. Fournier,Frederic (1775) – werken (1610), Active, 2011.

7.h3 Bf3 8.Qf3 c6 9.Nc3 Nbd7 10.g4 Ne8 11.Ne4 d5= 12.cd5 cd5 13.Nc3 d4 14.Nd5 Ndf6 15.Ne7 Qe7 16.g5 Nd7 17.Qb7 Nd6 18.Qg2 Nb6 19.Ba6 Na4 20.Bc1 Kh8 21.Qc6 Nb6 22.h4 f5 23.a4 Rad8 24.a5 Nd7 25.Qg2 f4= 26.Be2 e4 27.ef4 Rf4 28.Qg3 Rdf8 29.Bb2 Rf3 30.Qg1 Ne5 31.Bd4 Nd3 32.Kd1 Nf2 33.Kc2 Nh1 34.Bf3? ef3–+ 35.Re1 Qc7 36.Kd1 f2 37.Qh1 fe1Q 38.Qe1 Re8 39.Qg1 Qc4 40.Bc3 Ne4 (40...Ne4 41.Qe3 Nc3 42.Qc3 Qg4 43.Kc2 Rc8–+) 0–1. Pandurevic,M (2310) – Petrusic,T (2065), 15th Open, Bosnjaci CRO, 2010.

7.h3 Bh5 8.Be2 Nbd7 9.d3 c6 10.Nc3 Qc7 (10...a5 11.0-0=) 11.g4 Bg6 12.g5 Ne8 13.h4 Bh5 14.Nh2 (14.Qd2 g6+=) 14...Be2= 15.Qe2 f5 16.f4 (16.Nf3 a5=) 16...a5 17.b5 Qb8 18.Nf1 (18.h5 ef4 19.ef4 Nc7=) 18...Nc7=+ 19.a4 (19.Ng3!?=+) 19...Ne6 20.0-0-0 Qe8 (20...Qd8 21.fe5 de5 22.d4=+) 21.Qf3 (21.Ng3 Qf7 22.Rhe1 Rae8=+) 21...Ndc5 22.fe5 (22.Kb1!?–/+) 22...de5–+ 23.Kc2 (23.Ng3 f4 24.Nge2 Rd8–+) 23...f4 (better 23...Rd8 24.Qh3 f4–+) 24.Ba3? (better 24.Ne4–+) 24...Rd8 (24...fe3 25.Qe3 Nd4 26.Kb1 Na4 27.Na4 Ba3 28.b6–+) 25.Qh3 (25.Qg4 fe3 26.Ne3 Nd4 27.Kb1 Na4 28.Na4 Ba3–+) 25...Qf7 (better 25...fe3 26.Kb1 Nf4 27.Qe3 Ncd3 28.Bb2–+) 26.Bc5 Nc5 27.Nh2?! (27.ef4 ef4 (27...Qf4?! 28.Ne3–/+) 28.bc6 bc6–+) 27...Qg6 (better 27...e4 28.d4 Nd3 29.Rd3 ed3 30.Kb3 Bb4–+) 28.e4 (28.Nf3 fe3 29.h5 Qf5–+) 28...Qd6 (better 28...Ne6 29.Nf3 Nd4 30.Nd4 Rd4–/+) 29.Ng4?? (better 29.Nf3–/+) 29...Ne6–+ 30.Rb1 (30.bc6 bc6 31.c5 Nd4 (31...Qc5?! 32.Nh6 gh6 33.Qe6 Rf7 34.Qh6–/+) 32.Kd2 Qc5–+) 30...f3 31.Nf2 (31.Rhd1 Nd4 32.Kd2 Qa3 33.Ne5 Bb4–+) 31...Nf4 (better 31...Nd4 32.Kd2 Qa3 33.bc6 bc6 34.c5 Bc5 35.g6–+) 32.Qf1 Rd7 (32...Ne2 33.Rb2 Qd4 34.Ncd1 cb5 35.Rb5–+) 33.Rb3 (33.Rh2 Ne6 34.Rb2 Qd4–+) 33...Bd8 (better 33...Qd4 34.Rh2–+) 34.Ncd1 (34.Kb1–+) 34...Ne6 35.Kd2 (35.Rb2 cb5 36.Ne3 Nd4 37.Kb1 ba4–+) 35...Nc5 (35...Nd4!? 36.Rb2 cb5 37.cb5–+) 36.Rb1 Na4 37.Ne3 (37.Nc3 Nc3 38.Kc3 a4–+) 37...Qa3 (better 37...Bb6 38.Neg4 Bf2 39.bc6 bc6 40.Nf2–+) 38.Nc2 (38.Qc1 Qc5 39.Qc2–+) 38...Qc3 39.Kc1 Nc5 (better 39...Be7 40.Kd1 cb5 41.Qe1 Qc4 42.Qd2 Nc3 43.Kc1 Nb1 44.dc4 Nd2 45.Ne3 Nc4 46.Nd5–+) 40.d4 (40.Rh2–+) 40…ed4 (40...ed4 41.Qe1 Qc4–+) 0–1. David,Dorian_Ciprian (1725) – Vasile,Claudiu_Daniel (1995), CN Romanian – Echipe Masculine – Divizi, 2011.

7.h3 Bh5 8.g4 Bg6 9.d3 c6 10.Nh4 Re8 11.g5 Nfd7 12.Ng6 fg6 13.h4 Nf8 14.Bh3 Nbd7 15.Nd2 a5 16.Ne4 Qc7 17.b5 d5 18.cd5 cd5 19.Qb3 Nb6 20.Rc1 Qd8 21.Be5 Ba3? (better 21...a4 22.Qa2 Bb4 23.ab4 Re5+/-) 22.Bc7+- (22.Qa3?! Re5 23.Nd6 Rb8+/-) 22...Qe7 23.Bb6 Bc1 24.Qd5 Kh8 25.Ke2?? (better 25.Nd6 Ne6 26.Ne8 Re8 27.0-0+-) 25...Ba3+= 26.h5 (26.Ra1 Bb4 27.Rc1=) 26...gh5=+ 27.Bf5? (better 27.Bd4=+) 27...Rad8?? (better 27...Qe5 28.Qe5 Re5-+) 28.Qb3 (28.Qa2 Rd6 29.Ba5 Rd3 30.Kd3 Qe5 31.Qa3 Qf5+=) 28...Qe5? (better 28...Qb4!? 29.Qf7 Qb2 30.Kf3 Ng6+=) 29.Bd8+/- (29.Qa3?! Qf5 30.Bd8 Rd8 31.Qa5 Ne6+=; 29.Ba5?! Ra8 30.Nf6 Ne6 (30...gf6? 31.Bc3 Qf5 32.Bf6 Qf6 33.gf6+-) 31.Be6 gf6=) 29...Qf5 30.Ba5 (30.Qa3?! Rd8 31.Qa5 Ne6+=) 30...Qg4 31.f3?? (31.Kd2 Qf3 32.Ra1+- (32.Qa3?! Qh1 33.Nd6 Re7=)) 31...Qg2=+ 32.Nf2 Bc5 33.Bd2 Qg5 Pawn e3, live or die! 34.f4 Qf4 35.Rh3 Qg5 36.Qf7 Qe7 37.Qe7 Re7 38.Rh5 b6 39.Ne4 g6 40.Rd5 Ne6 41.d4 (41.Nc5? Nf4 (worse 41...Nc5 42.Rd6+/-) 42.Kf3 Nd5-+) 41...Ba3 42.Kd3 Kg7 43.Re5 Nc5?? (43...Kf7 44.Ng5 Ng5 45.Rg5=) 44.Nc5 (44.dc5 Rd7 (44...Re5 45.Bc3 Bc5 46.Be5 Kf7 47.Nc5+-) 45.Kc4 Rc7+-) 44...Bc5?? (better 44...Re5 45.de5 Bc5=) 45.Rc5 (better 45.dc5 Rd7 46.Ke2 bc5 47.Rc5+-) 45...bc5 46.dc5 Rd7?? (46...Kf6 47.c6 Ke6+-) 47.Ke2+- Rd5 48.Bb4 Kf7 (48...Rd8+-) 49.e4 (better 49.b6 Rd8 50.c6+-) 49...Rd4= 50.c6 Rb4?? (better 50...Ke6 51.Bc5 Re4 52.Kf3 Kd5-+) 51.c7+- Rb2 (51...Re4 52.Kf3 Rc4 53.b6+-) 52.Kf3 Rc2 53.b6 Ke7 (53...g5 54.b7 Rc3 55.Ke2 Rc2 56.Ke3 Rc3 57.Kd4 Rc7 58.b8Q Rd7 59.Ke3+-) 54.b7 Rc3 (54...Rc7 55.b8Q Rd7 56.e5+-) 55.Kf4 Rc7 56.b8Q Rd7 57.Qe5 Kf7 58.Kg5 Re7 (58...Rd1 59.Qf6 Ke8+-) 59.Qf6 Ke8 60.e5 Kd7 61.Kf4 (61.Qd6 Ke8 62.Kf6 Rf7 63.Ke6 Rc7 64.Qc7 h5 65.Qe7) 61...Re6+- 62.Qf7 Re7 63.Qd5 Ke8 64.e6 Kf8 (64...Rc7 65.Ke5 Rf7 66.Qa8 Ke7 67.Qb7 Kd8 68.ef7 h5 69.f8Q) 65.Qd8 Re8 66.Qf6 Kg8 67.Qf7 Kh8 68.Qe8 Kg7 69.Qf7 Kh6 70.e7 (70.Qe7 Kh5 71.Qh7) 70...g5 71.Kf5 g4 72.Qf6 Kh5 73.Qg5 (73.e8Q) 1-0. is_er_nog_hoop (2545) - shamsi (2330), Rated Blitz game, lichess.org, 2016.

7.h3 Bh5 8.g4 Bg6 9.d3 Nbd7 10.Nh4 c6 11.Ng6 hg6 12.g5 Nh5 13.h4 a5 14.Nc3 ab4 15.ab4 Ra1 16.Ba1 Qb6 17.Ne4?? (better 17.Qa4!?=) 17...Qb4 18.Bc3 Qa3 19.Qc2 d5 20.cd5 cd5 21.Bb2 Qb4 22.Nd2 Ra8 23.Bg2 Ra2 24.Qc8 Nf8 25.Bc3? (25.Bc1 Qb5 26.0-0 Qc6-/+ (26...Qd3 27.Qb7 d4 28.Be4+=)) 25...Qb5-+ 26.0-0? (26.Be5 Bb4 27.0-0 Rd2-+ (worse 27...Bd2 28.Bd6+/-)) 26...Qd3 (better 26...d4-+) 27.Nf3-/+ Rc2 (27...d4 28.ed4 Nf4 29.Qb7-+) 28.Ne5? (better 28.Qb7 Qc3 29.Qe7=) 28...Qc3-/+ (28...Rc3 29.Qb7 Qf5 30.Qe7+=) 29.Qb8?? (29.Qc3 Rc3 30.Bd5 Ne6-/+) 29...Qc7 (better 29...d4 30.Be4 Rc1-+) 30.Qc7 Rc7 31.Bd5 Bd6 32.Nc4? (32.Nf7!? Rf7 33.Rc1=+) 32...Bc5 33.Rb1 Ne6 34.Rb7 Rb7 35.Bb7 Kf8 36.Kg2 Ke7 37.f4 f6 38.Kf3 Nc7 39.Be4 Kf7 40.Bc6 Be7 41.Be4 fg5?? (better 41...Bb4-/+) 42.hg5+= Na6 43.Ne5 Ke6 44.Bg6 Nf4 45.ef4 Nc5? (better 45...Bg5!? 46.Kg4 Bf6=) 46.Kg4 Bd6 47.Bf5 Ke7 48.Nc6 Kf8 49.Nd4 Kf7 50.Bb1 g6 51.Nf3 Kg7? (51...Ne6 52.Ba2 Ke7 53.Ne5 Be5 54.fe5+/-) 52.Ne5?? (better 52.Nh4+-) 52...Be5+/- 53.fe5 Nd7 54.e6 (better 54.Kf4 Nc5 55.Ba2+/-) 54...Ne5?? (better 54...Nc5=) 55.Kf4+- Nc6 56.Ke4 Kf8 57.Kd5 Ke7 (57...Ne7 58.Ke5 Ke8+-) 58.Kc6 Ke6 59.Bg6 Ke5 60.Bb1 Kf4 61.g6 Kg5 (61...Kf3 62.g7 Ke3 63.g8Q Kf2 64.Qb3 Kg2 65.Qe3 Kf1 66.Qf3 Ke1 67.Qg2 Kd1 68.Bd3 Ke1 69.Qe2) 62.g7 Kh6 (62...Kg4 63.g8Q Kf4 64.Qe6 Kg5 65.Qe5 Kh4 66.Qf4 Kh3 67.Bf5 Kg2 68.Be4 Kh3 69.Qg5 Kh2 70.Qg2) 63.g8Q Kh5 64.Bf5 Kh4 65.Qg4 1-0. is_er_nog_hoop (2575) - jokido (2400), Rated Blitz game, lichess.org, 2016.

7.h3 Bh5 8.g4 Bg6 9.d3 e4 10.Nh4 ed3 11.Ng6 hg6 12.Bd3 Nc6 13.h4 Ne5 14.Be2 Ne4 (better 14...a5!?=) 15.Qd4+/- f5 16.gf5 gf5 17.f4?? (better 17.Nc3 Bf6 18.Qd5 (18.Ne4? Nf3 19.Bf3 Bd4 20.Bd4 fe4 21.Be4 c6-/+) 18...Nf7 19.Ne4 fe4 20.Bd4 Bd4 21.Qd4=) 17...Bh4-+ 18.Kd1 Nf2 19.Kc2 Nh1 20.Nd2 Ng3 21.Qd5 (21.Bf3 Bf6 22.fe5 de5 23.Qd8 Rad8 (worse 23...Rfd8 24.Bb7 Rab8 25.Bd5 Kf8 26.Nf3-+; 23...Bd8?! 24.Bb7 Rb8 25.Bd5 Kh7 26.Rg1=) 24.Bb7 e4 25.Bd5 Kh7-+) 21...Nf7 (better 21...Kh7!? 22.fe5 Ne2 23.Rh1-+) 22.Rg1 c6 (22...Ne2?? 23.Rg7 Kh8 24.Qf5 Nd4 25.Bd4 Ng5 26.Rh7 Kg8 27.Qg6) 23.Qf3 Bf6 (23...Ne2?? 24.Rg7 Kh8 25.Qh5 Nh6 26.Qh6) 24.Qg3 Bb2 25.Kb2 Qf6 26.Kc2 d5 27.Nf3 Rae8 28.Nd4 Nd6 29.Bh5? (29.cd5 cd5 30.Qh3-+) 29...Re4 30.Bg6 Nc4 (30...dc4?! 31.Qh3 Rf7 32.Rg3-/+) 31.Rh1 (31.Qh3 Rd8 32.Qh7 Kf8 33.Qh8 Ke7 34.Nf5 Kd7 35.Qg7 Qg7 36.Ng7 Na3 37.Kd3 Rb4 38.Nf5-+) 31...Ne3 32.Kb1 Rd8 (32...Rd4?? 33.Rh8!? Kh8 34.Qh3 Qh4 35.Qh4 Kg8 36.Qh7; 32...Qd4?? 33.Rh8!? Kh8 34.Qh4 Kg8 35.Qh7) 33.Ne6 (33.Rh5 Rd4 34.Bh7 Kf7 35.Qe3-+) 33...Re6 (33...Qe6?? 34.Rh8!? Kh8 35.Qh4 Kg8 36.Qd8 Qe8 37.Be8 Re8 38.Qe8 Kh7 39.Qe3+-) 34.Qh3 Kf8 35.Rg1 Ng4 36.Bh5 Re2 (better 36...Re3 37.Rh1 Rh3 38.Rh3-+) 37.Qb3 Rde8! 38.Rd1 (38.Be8 Re3 Double attack (38...Re3 Decoy)) 38...Qe6 (38...R8e3 39.Qc2 Rc2 40.Kc2 Qc3 41.Kb1 Qb3 42.Kc1 Re2 43.Rd2 Re1 44.Rd1 Rd1) 39.Bg4 (39.Be8 Qe8 40.Qd3-+) 39...Qe4 40.Ka1 fg4 41.f5 Qe5 42.Kb1 Re1 43.f6 gf6 (43...gf6 44.Qc2 g3 45.Qc5 Kf7 46.Qc2 g2 47.b5 g1Q 48.Qh7 Ke6 49.Qh3 Kd6 50.Qe6 Qe6 51.Kc2 Qe2 52.Kb3 Qb5 53.Kc2 Qgc5 54.Kd2 R1e2; 43...Qd4 44.fg7 Kg8 45.Qc2 Rd1 46.Ka2 Ra1 47.Kb3 Re3 48.Qd3 Qd3 49.Kb2 Qc3) 0-1. is_er_nog_hoop (2575) - jokido (2400), Rated Blitz game, lichess.org, 2016.

8.0-0 Nb6 9.Qc2 Re8 10.h3 Bh5 11.Re1 (11.d3 Qd7=) 11...Bg6 Black prepares e4 (11...e4 12.Nd4+=) 12.Qd1 (12.d3 Qd7=) 12...e4 13.Nh4 Nfd7 (13...Bh5! 14.g4 Nfd7+=) 14.Ng6+= hg6 15.d4 ed3 16.Bd3 Bf6 17.Qc2 Bb2 18.Qb2 Qf6 19.Qf6 gf6 20.Nd2 Rad8 21.Rad1 Ne5 22.Be2 d5 (22...f5 23.f4 Nc6 24.Bf3+=) 23.cd5 (23.c5 Nc8+=) 23...Rd5 (23...Nd5!? 24.Ne4 f5+=) 24.Ne4+/- Kg7 25.Nc5 Rd1 26.Rd1 Nbc4 27.Bc4 Nc4 28.Nb7 Na3 29.Rc1 Nb5 30.Rc5 Re5 31.Re5 (31.Kf1 Kf8+=) 31...fe5= 32.Kf1 Nc3 33.Nd8 Kf6 34.Nc6 a6 (34...Nb5 35.h4=) 35.Nb8+/- Ke6 36.Na6 Kd6 37.Ke1 Kc6 38.Nc5 Na2 39.Na6 Kb6 (39...Nc3 40.f3+/-) 40.Nc5 Kb5 (40...Kc6!?=) 41.Nd3 (41.Nd7 e4 42.Ne5 Kb4 43.Nf7 c5+/-) 41...e4 The isolani on b4 becomes a target 42.Ne5 Kb4 43.Nf7 c5 44.Ne5 (44.Nd6 Nc3 45.h4+-) 44...c4–/+ 45.Nc6 (45.Ng6 c3 46.Nf4 c2–+) 45...Kb3 46.Nd4 Kb2 47.h4 Nb4 48.Kd1 c3–/+ 49.g4 Nc6 50.Nc2 Ne5 51.h5 gh5 52.gh5 Ng4 53.Nb4 Nf2 54.Ke1 Ng4 55.Ke2 c2 56.Nc2 Kc2 57.Kf1 Kd2 58.Kg2 Ke3 59.Kg3 Nh6 60.Kh4 Kf4 61.Kh3 Kf3 0–1. Tudose,Matei_Ovidiu – Stroe,Flavius_Gabriel, Calimanesti ROM, Ch U10 (b), 2014.

8.0-0 Nb6 9.d3 a6 10.Nbd2 Nbd7 11.h3 Bh5 12.Nd4 Be2 13.Ne2 d5 14.cd5 Nd5 15.Nf3 Bf6 16.Qb3 c6 17.d4 ed4 18.Ned4 Bd4 19.Bd4 N7f6 20.Rad1 Qe7? 21.Bc5+- Qe6 22.Bf8 Rf8 23.Rfe1 Ne4 24.Rd4 Nec3 25.Kf1?? Ne4 26.Red1?? Qg6?? 27.Rd5 cd5+/- 28.Rd5 Nf6 29.Rd4 Qf5 30.Qd3 Qc8 31.Rc4 Qe6 32.Qc3 b5 33.Rc6 Qf5 34.Qc2 Qd5 35.Ra6 Rd8 36.Rc6 Qd3?? 37.Ke1 Qc2?? 38.Rc2+- h6 39.Rc5 Rb8 40.Nd4 Ne4 41.Rb5 Rb5 42.Nb5 Nf6 43.Kd2 Nd7 44.Kd3 Nb6 45.f3 Kf8 46.e4 Ke8 47.g4 Kd7 48.Kd4 f6 49.Nc3 Kc6 50.a4 Kb7 51.a5 Nd7 52.b5 Ka7 53.b6 Kb7 54.Kc4 Nb8 55.Kb5 Na6 56.Nd5 Nb8 57.Nc7 Nd7 58.a6 Kc8 59.Nd5 Kb8 60.a7 Ka8 61.Kc6 Nb8 62.ab8Q Kb8 63.b7 Ka7 64.b8Q! Ka6. Fournier,Frederic (1910) – ratiqulin (1900), Active (5/0), 2004.

8.0-0 h6 9.Nc3 c6 10.d4 ed4 (10...Re8 11.Qd3=) 11.Nd4+= Be2 12.Nce2 Ne5 13.Qc2 Qd7 14.Nf5 Qe6 (better 14...Rfe8!?+=) 15.Nf4 Qd7 16.c5 (16.Ne7?! Qe7 17.Rfd1 Rfd8+=) 16...Ng6 17.Nh6 gh6 18.Ng6 fg6 (18...Rfd8 19.Rad1 d5 20.Ne7 Qe7 21.Qc3+-) 19.Qg6 Kh8 20.Qh6 Kg8 21.Qg6 Kh8 22.f4 Qe8 23.Qh6 Kg8 24.cd6 Bd8 25.Rf3 (25.f5!? Rf7 26.e4 Qf8 27.Qf8 Kf8+-) 25...Kf7 26.Bf6 Bf6 27.Qh7 Bg7 28.Rg3 Rg8 29.Rc1 Kf8 (29...Rd8 30.Rc5 Ke6 31.Rg6 Qg6 32.Qg6 Bf6 33.Re5 Kd6 34.Qf6 Kc7 35.Re7 Rd7 36.Rd7 Kd7 37.Qf7 Kd6 38.Qg8 a5+-) 30.Rc5 Rh8 31.Qg7 1-0. Adlai – Byadab, internet, 2021.

8.Qc2 c5 9.b5 a6 10.Nc3 Nb6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qa8 14.0-0 Bf3 15.gf3 Qc8 16.Kg2 Qe6 17.Rg1 Nc4 18.Ne4 Nb6 19.Ng5 Qd7 20.f4 h6 21.fe5 de5 22.Ne4 1–0. combijack (1770) – pantoja (1640), gameknot.com, 2009.

8.d3 e4 9.de4 Ne4 10.Nbd2 Nd2 11.Qd2 Bf6 12.0-0 Re8 13.Rfe1 Qe7 14.Bf6 Nf6 15.Rad1 Rad8 16.Qd4 Bh5 17.h3 b6 18.Qb2 Ne4 19.Nd4 Be2 20.Re2 Qd7 21.b5 Nc5 22.Nc6 Ra8 23.Red2 a6 24.Nd4 ab5 25.cb5 Re5 26.Ra1 Rae8 27.Nf3 Rh5 28.Kf1 Ne4–/+ 29.Rc2 h6?? 30.a4 Ra8 31.Qd4 Nc5 32.Rca2? Qe6 33.Qd2? Nb3–+ 34.Nd4?? Nd2 (34...Nd2 35.Rd2 Qc4 36.Ke1 Re5–+) 0–1. Fournier,Frederic – Guest3908881, Partie amicale, 2m + 0s, 2008.

8.d4 e4 9.Nfd2 Be2 10.Qe2 c6 11.Nc3 d5 12.0-0 Qc7 13.cd5 cd5 14.Rfc1 Qb8= 15.Rc2 Nb6 16.Rac1 a6 17.a4 Qd6 18.a5= Nbd7 19.Ba3 Qe6 20.Na4 Rfe8 21.Rc7 Rab8 22.Nb3 b5 23.Nac5 Nc5+= 24.Nc5 Bc5= 25.R1c5 Qf5 26.h3 Rbc8 27.Rc8 Rc8= 28.Qc2 Rc5 29.bc5 h6 30.c6+/- Qc8 31.Bd6 Ne8 32.Qc5 Nf6 33.Qb6 Ne8 34.c7 Nd6?? 35.Qd6 (35…Qc7 36.Qc7+-) 1–0. tossubanaani – Queenwomen, ChessWorld.net, 2005.

8.d4 e4 9.Nfd2 Be2 10.Qe2 c6 11.Nc3 d5 12.cd5 cd5 13.0-0 Nb6 14.f4 Rc8 15.Rac1 a6 16.a4? Qd7 17.a5 Na8 18.Qd1? Bb4–+ 19.Qb3 Ba5 20.Ndb1 Bc3 21.Bc3 Rc6 22.Bb4 Rfc8 23.Rc6 Qc6 24.Na3 Nb6 25.Bc5 Nfd7 26.Rc1 Na8 27.Nb1 b6 28.Ba3–/+ Qb7 29.Rc8 Qc8 30.Qd5 Nf6 31.Qb3 b5 32.Bc5 h6 33.Nc3 Nc7 34.Ne2 Ne6 35.Bb4 Ng4 36.h3–/+ Nf6 37.Kf2 Qc6 38.g4 Nd5 39.Bd2 Nb6 40.Ng3 Nc4 41.Ke2 g5 42.Qc2 Qd6?? 43.Ne4 Qd5?? 44.Nf6+- (44.Nf6 Kg7 45.Nd5 gf4 46.Qf5+-) 1–0. Fournier,Frederic (1810) – ferands (1665), Active, 2011.

8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.Nc3 c6 12.0-0 a5 13.b5 dc4 14.Qc4 cb5 15.Qb5+/- Qc7 16.Nce4+- Ng4 17.Qh5 Ndf6+/- 18.Nf6 Nf6 19.Qf3 Qc2 20.Qb7?? Qd2=+ 21.Rad1 Qc2 22.Rc1 (22…Qe4 23.Qe4 Ne4 24.f3–/+). juanpacio (1760) – tanita, internet, 2006.

6.Nc3 0-0 7.Nf3=.

6.Nc3 Bb7 7.d3 Nbd7 8.e4 Nf8 (8...c5 9.Nf3=) 9.Nd5 c6 10.Ne7 Qe7 11.Nf3 Ne6 12.g3 (12.Be2 a5=) 12...0-0=+ 13.Bg2 Nd7 (13...a5 14.0-0=) 14.d4 (14.0-0 a5=) 14...Rad8 (14...f5 15.ef5 Nd4 16.Nd4 ed4 17.Kf1 Rf5 18.Bd4=+) 15.0-0+= g6 (15...a6 16.d5 cd5 17.cd5+=) 16.Bc1 (16.Qa4 ed4 17.Qa7 Ne5 18.Ne5 de5 19.Qb6 Ra8=+) 16...f6 (16...ed4!? 17.Nd4 Ne5=) 17.d5+= cd5 18.ed5 Ng7 19.Re1 Rc8 20.Qb3 Ba6 21.b5 Nc5 22.Qc2 Bb7 23.Nd4 Qd7 24.Nc6 a6 25.a4 a5 (25...Nf5 26.Ba3+=) 26.Be3+- Rce8 27.Bc5 (27.Rad1 Nf5 28.Bc5 dc5+-) 27...dc5 28.Rad1 Qd6 29.Re2 (29.Qe4 Bc8+=) 29...Nf5 30.Be4 Bc8 31.Red2 (31.Ree1 Kg7+=) 31...Kg7 (31...Nd4 32.Qd3=) 32.Bg2 (32.Re1 Nd4 33.Qc3 Bd7=) 32...Nd4= 33.Qb2 ½–½. Climent Vidal,Pere – Garcia Clemente,Julian Fco (1825), 20th Obert Internacional Sant Marti Gro, 2018.

6.Nc3 c6 7.Qc2 0-0 8.Nf3 g6 9.Be2 c5 10.b5 Be6 11.h4 Bf5 Black prepares the advance e4 12.Qb3 e4 13.Ng5 h6 14.Nh3 Bh3 15.Rh3 Nbd7 16.0-0-0 (16.g4!?+-) 16...Ne5 17.f4 Nd3 18.Bd3 ed3 19.Rf3 (19.h5!? gh5 20.Nd5 Nd5 21.Rg3 (21.cd5?! Bf6+-) 21...Bg5 22.cd5+-) 19...Qd7 20.Rg1 Qg4 21.Nd1 Qh4? (better is 21...a6!?+=) 22.Qd3 Qh2?? (better is 22...Qg4 23.Nf2 Qd7+-) 23.Qf1+- Qh5 24.Rh3 (better is 24.Bf6!? Bf6 25.g4 Qh4+-) 24...Qf5? (24...Qg4+-) 25.Rh6 Kg7 26.g4 Qd7 27.g5 Qf5 (27...Rh8 28.Rh8 Rh8 29.f5+-) 28.Rgh1 Rh8 (28...Rg8 29.e4 Qe4 30.gf6 Bf6 31.Rh7 Kf8 32.Bf6 Qe6+-) 29.gf6 (better is 29.e4 Qc8 30.Rh8 Qh8 31.Rh8 Rh8 32.f5+-) 29...Bf6 30.Qh3 Bb2 31.Nb2 Qh3 32.R6h3 (32.R1h3? Rh6 33.Rh6 Kh6–+) 32...Rhe8 (32...Rh3 33.Rh3 f6 34.e4+-) 33.Nd1 a6 34.Nc3 ab5 35.Nd5 (better is 35.Rh7 Kf6 36.Nd5 Ke6 37.Nc7 Kf6 38.cb5+-) 35...Ra3 (35...Rg8 36.e4 b4 37.Rh7 Kf8 38.ab4 Ra1 39.Kc2 Rh1 40.Rh1 Kg7+-) 36.Rh7 Kf8 37.Rh8 Kg7 38.R1h7 1–0. combijack (1770) – kapvel (1670), gameknot.com, 2009.

6.Nc3 Nbd7 7.Be2 (7.Qf3 Rb8=) 7...Bb7 (7...0-0 8.Bf3 Rb8 9.Nh3=) 8.Nf3 0-0 9.0-0 a5 (9...e4 10.Nd4=) 10.Qb3 (10.b5 Re8=) 10...Qc8 (10...c6 11.d4=) 11.d4+= ed4 12.ed4 Ne4 (12...Re8 13.Rfe1+=) 13.d5 Nc3 14.Bc3 Bf6 15.Bf6 (15.Nd4 Re8 16.Bd3 Bd4 17.Bd4 c5 18.dc6 Qc6+=) 15...Nf6 16.b5 (16.Nd4 Re8+=) 16...Qg4 17.Ra2 (17.Rae1 Rae8+=) 17...Rae8= 18.Re1 Qf4 (18...Bc8 19.Qd1=) 19.Qc2 Ne4 20.Bd3 (20.Raa1 Re7=) 20...Ng5 The mate threat is Nxf3 21.Re8 Nf3 (21...Re8 22.Ng5 Re1 23.Bf1 Qg5 24.Qd2 Qd2 25.Rd2=) 22.gf3 Threatening mate... how? 22...Re8 23.Bh7 Kh8 24.Be4 Re5 (24...Qg5 25.Kf1=+) 25.Qd2 Rg5 (25...Qh4 26.Rc2=) 26.Kf1= Qh4 27.Ke2 Rg2 28.Qd4? (better 28.Qe3=) 28...f5!–+ (28...Qh2?! 29.Ra1=; 28...Rh2?! 29.Qe3=) 29.Qe3 (29.Bf5 A pinning theme 29...Qd4) 29...fe4 30.fe4 Bc8 31.Kd3 (31.h3 Bh3 32.Kd3 Rh2–+) 31...Qh2 (31...Rh2!? 32.c5–+) 32.Qf3 Qh3 (32...Bg4 33.Qf8 Kh7 34.Qf7–+) 33.Qh3 Bh3 34.Ke3 Kg8 35.Ra1 Rg6 (35...g5 36.Rh1 g4 37.Ke2–+) 36.Rh1–/+ Rh6 (36...Bg2 37.Re1–+) 37.Kf4 (37.f4 Kf7–/+) 37...Kf7 (37...Bg2 38.Rh6 gh6 39.a4–+) 38.Rg1 (38.Kg3 Bd7 39.Rh6 gh6–+) 38...Rf6 (38...Kf6 39.f3–+) 39.Ke3 Bd7 (39...Rg6 40.Re1–+) 40.f4–/+ Rh6 41.e5 de5 42.fe5 Bf5 43.Kf4 (43.c5 bc5 44.Rc1 Ke7 45.Rc5 Kd8–+) 43...g6 (better 43...Bd3 44.e6 Kf6–+) 44.d6? (better 44.Rg3–+) 44...cd6 (44...Rh4 45.Ke3–+) 45.ed6 Rh4 46.Ke5 Rc4 47.Rh1 (47.Rd1 Bd7 48.Rf1 Kg7 49.Re1–+) 47...Rc5 48.Kd4 (48.Kf4 Rb5 49.Rd1 g5 50.Kf3 Ke8–+) 48...Ke6 (48...Rb5 49.Re1–+) 49.Rh7 (49.a4 Bc2 50.d7 Kd7–+) 49...Kd6 (49...Rb5 50.Kc3–+) 50.Rb7 (50.a4 Rd5 51.Kc4 Ke5–+) 50...Rb5 51.Kc4 Rb1 52.Rb8 Kc6 (52...b5 53.Kc3–+) 53.Rf8 b5 54.Kc3 a4 55.Rf6 (55.Kd4 Rb3 56.Rf6 Kb7–+) 55...Kc5 56.Rf7 (56.Kd2 Ra1–+) 56...Rb3 57.Kd2 Ra3 58.Rc7 (58.Rb7 b4 59.Rc7 Kd4–+) 58...Kb6 (58...Kd4 59.Kc1–+) 59.Rf7 b4 60.Kc1 (60.Rf8 Kc5 61.Rf6 b3–+) 60...Rc3 (better 60...b3–+) 61.Kb2 (61.Kd2–+) 61...a3 62.Ka1 (62.Ka2 Be6 63.Kb1 a2 64.Kb2 Bf7 65.Ka1 Rc1 66.Kb2 a1Q) 62...b3 (62...Rc1 63.Ka2 Be6) 63.Rf6 Kc5 (63...Kc5 64.Rc6 Kb5 65.Rc5 Kb6 66.Rc6 Kb7 67.Rc7 Kb8 68.Rb7 Kc8 69.Rb8 Kd7 70.Rb7 Kd6 71.Rb6 Ke5 72.Rb5 Kd4 73.Rd5 Ke3 74.Re5 Be4 75.Re4 Ke4 76.Kb1 g5 77.Ka1 Rc1) 0–1. Lerat,Paul Pascal – Vanloo,Georges, 18th Touraine Open, 2003.

6.d4 ed4 7.Bd4 Nc6=.

6.Be2 0-0 7.d4 ed4 8.Bf3=.

6.Be2 Bb7 7.Nf3 0-0 8.0-0 Nbd7 (8...a5 9.b5=) 9.d4+= ed4 10.Nd4 d5 11.Nd2 dc4 (11...c5 12.Nf5+=) 12.Nc4 c5 13.bc5 Nc5 14.Nf5 Re8 15.Qd8 Rad8 16.Ne7 Re7 17.Bf6 gf6 18.Rfd1 Red7 (18...Bd5 19.Rac1+=) 19.Rd7 Rd7 20.Rd1 Rd1 (20...Bd5 21.Nb2 a6 22.h3+=) 21.Bd1 Kf8 22.Nd6 Ke7 23.Nb7 Nb7 24.Bc2 (24.Be2 Nd6+=) 24...h6 25.Kf1 (25.Bd3 Nc5 26.Be2 a6+=) 25...Nd6 26.a4 (26.Ke2 b5+=) 26...Kd7 (26...a6 27.Ke2+=) 27.Ke2 Kc6 28.Kf3 Kc5 (28...f5 29.g4+=) 29.h4 (29.Kg4 Kc4+=) 29...Kb4 (29...f5 30.g4+=) 30.Kg4 f5 (30...Kc3 31.Bb1+=) 31.Kh5+- Ne4? (31...Kc3 32.Bb1 Kb2 33.Bd3+-) 32.Be4 (better 32.Kh6!? Nf2 33.Kg7+-) 32...fe4+- 33.Kh6 Ka4 34.Kg5 b5 35.h5 b4 36.h6 b3 37.h7 b2 38.h8Q b1Q 39.Qd4 Kb5 40.Qa7 Qb3?? (better 40...Qf1 41.Qb7 Kc5 42.Qe4 Kb6+-) 41.Qb7 Ka4 42.Qb3 Kb3 43.Kf5 (43.Kf4 Kc4 44.Ke4 Kc5+-) 43...Kc3 (43...Kc4 44.Ke4 Kc5 45.Ke5+-) 44.Ke4 1–0. pcmvr – jiikoo, internet, 2005.

6.Nc3 0-0 7.Qc2 Re8 (7...a5 8.Nf3=+) 8.Nf3 h6 (8...a5 9.Bd3=+) 9.h4 (9.Be2 c5=) 9...Nb8 (9...a5 10.d4=+) 10.Bd3 Be6 11.Ng5 Nfd7?? (11...hg5 12.hg5 Nfd7 13.Bh7 Kf8+=) 12.Bh7+- (12.Ne6?! fe6 13.h5 Nf6+=) 12...Kh8 (better is 12...Kf8 13.Ne6 fe6+-) 13.Nce4?? (better is 13.Bg8 Nf6 14.Bf7+-) 13...f5?? (13...hg5 14.hg5 Bg5 15.Ng5 Qg5 16.Be4 Kg8 17.Bb7 Nb6=) 14.Ne6+- Qc8 15.Bf5 Nc6 16.N4g5! Nf6 17.Ng7! Qb8 18.N7e6 Nd8 19.Bg6 Rg8 20.Nf7 Nf7 21.Bf7 Rg2 22.0-0-0 Ng4 23.Qe4 Nf2 24.Be5! (24…de5 25.Qg2 Nd3 26.Kb1+-) 1–0. Dillimann,Hans Peter – Kloeck,Florian, Afro97, 1997.

6.Nc3 0-0 7.Nf3 c5 8.Be2 Qc7 (8...d5 9.cd5 cb4 10.ab4 Bb4 11.Qc2=) 9.d4 ed4 (9...cb4 10.ab4 e4 11.Nd2+=) 10.ed4 cd4 (10...a5 11.Nb5 Qd8 12.bc5 dc5 13.d5+=) 11.Qd4 Ne5 (11...Nb6 12.0-0+=) 12.Nb5+/- Nf3 13.Bf3 Qb6 (13...Qb8!?+/-) 14.Qb6+- ab6 15.0-0 (better is 15.Rd1+-) 15...Rb8? (better is 15...Be6 16.Rfe1 Bc4+-) 16.Rfe1 Be6 17.Nc7 Rfc8 18.Ne6 fe6 19.Re6 Rc4 (19...Kf8 20.Rae1 Bd8+-) 20.Re7 Rbc8 21.Rd1 Kf8 (21...R4c7 22.Rc7 Rc7 23.Rd6+-) 22.Rb7 Rc2 (22...Ne8 23.Kf1+-) 23.Bf6 gf6 24.Rb6 Ke7 (24...R8c3 25.Rbd6 Ra3 26.Rf6 Kg7 27.Rc6 Rc6 28.Bc6+-) 25.Rbd6 Rc1 (25...R8c7 26.b5 Rc1 27.b6+-) 26.b5 (26.Rd7 Kf8+-) 26...R8c5 (26...Rd1 27.Rd1 Rb8 28.a4+-) 27.b6 Rd1 28.Rd1 Rb5 29.b7 Rb7 30.Bb7 Ke6 31.a4 (31.a4 f5 32.a5+-) 1–0. Cirulis,Ilmars (1905) – Zatiek,Leandro (1800), FICGS, 2015.

6.Nc3 a5 7.b5 0-0 8.Qc2 Nc5 9.d4 ed4 10.ed4 Ne6 11.d5 Nc5 12.Be2 Re8 13.Nf3 Nh5 14.0-0 Nf4 15.Rfe1 Qd7 16.Nd4 Bf6 17.Bg4 Qd8 18.Re8 Qe8 19.Nce2 Nfd3 20.Bc8 Rc8 21.Rd1 Nb2 22.Qb2 a4 23.Qc2 Qe5 24.Nc3 Re8 25.h3 Nb3 26.Nde2 h6 27.Re1 g6 28.Rd1 Bg7 29.g3 Nc5 30.Nd4 Ne4 31.b6 Nc3 32.Qc3 cb6 33.Qc2 Qh5 34.Qa4 Re4 35.Nb5 Be5 36.Kg2 Re3 37.Nd4 Bd4 38.fe3= Qe2 39.Kh1 Be3 40.Rg1 Bg1 41.Kg1 Qf3 42.Qa8 Kg7 43.Qb7 Qg3 44.Kf1 Qh3 45.Ke2 Qg2 46.Ke3 h5 47.Qc7 Qg3 48.Ke2 h4 49.Qb6 h3 50.Qd4 Kg8 51.Qf2 Qa3 (52.Qh4 Qb2 53.Ke3 Qc3 54.Kf2 Qd2 55.Kg3 Qg2 56.Kf4 h2–+) 0–1. Baer,Werner (1715) – Woelfelschneider,Peter (1700), TT–02 TSC, 2002.

6.Nc3 c6 7.Qc2 b6 8.Nf3= Bb7 9.e4 Nf8 10.d3 Ng6 11.g3 0-0 12.Bg2 Qc7 13.0-0= Rad8 14.Ne2 Bc8 15.h3 h6 16.Rad1 Bd7 17.Nc3 Qc8 18.Kh2 Nh7 19.Qb3 Ng5 20.Ng5 Bg5 21.Qc2 Be6 22.Qe2 f5 23.ef5 Bf5 24.Ne4 Be7 25.Rc1 Bd7 26.Rce1 Be6 27.Nd2 Bf5 28.Nf3 Bf6 29.h4 Bg4 30.Qc2 Bf5 31.h5 Nh8 32.Ng1 Nf7 33.f3 Bg5 34.Bh3 Bh3 35.Nh3= Bf6 36.Qe2 Ng5 37.Nf2 Qf5 38.Kg2=+ Ne6 39.Rh1 Nd4 40.Qd1 Bg5 41.Bd4+= ed4 42.f4 Bf6 43.Nh3 Qd7 44.Qf3 Rfe8 45.g4 Re3=+ 46.Qd1 Rde8 47.Nf2? c5 48.Ne4=+ Re1 49.Re1 Bh4 50.Rh1 Bd8 51.b5 d5 52.cd5 Qd5 53.Kg3 c4 54.Re1 Rf8 55.dc4 Qc4 56.Rf1 Bc7 57.Qc1?? Qc1–+ 58.Rc1 Bf4 (59.Kf3 Bc1 60.Ke2 Ba3–+) 0–1. Satka,Martin – Garms,Ilse (1680), Brandenburg Seniors op, 2003.

6.Nc3 c6 7.d4 0-0 8.de5 Ne5 9.Qd4 Qc7 10.Nf3 Ng6 11.Be2 Rd8 12.0-0 Ng4?? 13.Nd5!+- Bf6 14.Nc7 Bd4 15.Bd4 Rb8 16.Ba7 Bf5 17.Nd4 Bd7 18.Bb8 Rb8 19.Bg4 Bg4 20.h3 Bd7 21.b5 cb5 22.Ncb5 Bb5 23.Nb5 Rd8 24.Rfd1 (24…b6 25.Nd6+-) 1–0. Trkn – guest486, ICC, 2004.

6.d4 ed4 7.ed4 0-0 8.Bd3 a5 9.Nc3 Re8 10.Nf3 (10.d5=+) 10...Nf8 (better 10...d5!? 11.0-0 ab4 12.ab4 Ra1 13.Qa1 dc4 14.Bc4 Bb4–/+) 11.d5= Bd7 (11...N8d7 12.0-0=) 12.0-0+= Qc8 13.Qc2 Ng6 14.Ne4 Ne4 15.Be4 ab4 16.ab4 Ra1 17.Ba1 (17.Ra1 f5 18.Bd3 Nf4+=) 17...f5 18.Bd3 Nf4 19.Nd4 (19.Re1 Nd3 20.Qd3 c6+=) 19...Nd3 20.Qd3 Bf6 21.Qg3 (21.Ne2 Qd8+=) 21...Re4= 22.Rd1 (22.Qd3!?=) 22...Qe8 23.f3?? (23.Qd3 Bd4 24.Bd4 Re1 25.Re1 Qe1 26.Qf1 Qb4 27.h3–/+) 23...Bd4?? (better 23...Bh4 24.fe4 Bg3 25.hg3 fe4–+) 24.Bd4= Rd4 25.Rd4 Qe3 26.Qf2 Qc1 27.Qf1 Qe3 ½–½. Patarcic,Domagoj (2025) – Ivekovic,Ana (1940), CRO–chT U20, 2010.

6.Ne2 0-0 7.Ng3 Re8 8.Nf5 Bf8 9.d4 g6 10.Ng3 Bg7 11.Be2 ed4 12.ed4 Nb6 13.0-0 h5 14.Re1 h4 15.Nf1 h3 16.g3 Bd7 17.Nbd2 Na4 18.Qb3 Nb2 19.Qb2 c6 20.Bf3 Qc7 21.Nb3 Be6 22.Qc2 Rad8 23.Ne3 Re7 24.a4 Rde8 25.a5 d5 26.c5 a6 27.Be2 Bc8 28.Bd3 Ng4 29.Qd2 Bh6 30.Re2? Ne3–+ 31.Rae1 Ng4 32.Re7 Re7 33.Re7 Qe7 34.f4 Qe3 35.Qe3 Ne3 0–1. Lucas,Phil – Taylor,Michael AJ (1645), Royal Beacon Seniors op, 2005.

6.Nf3 b6 7.d4 Bb7 (7...a5!?=) 8.de5+= de5 9.Ne5 0-0 10.Nd7 Nd7 11.Nd2 Bf6 12.Bf6 Qf6 13.f3 Rad8 14.Qc2?? (better is 14.Rb1=) 14...Qa1–+ 15.Kf2 Nf6 (better is 15...Qa3 16.b5–+) 16.Rg1 (16.Nb1 Rfe8 17.Bd3 Qe5–+) 16...Qa3 17.b5 Qc5 18.Bd3 Qh5 19.h3 Qh4 20.Kf1 Rfe8 21.e4 Qf4 22.Ke2 Qd6 23.Rd1 Nh5 24.Nf1 Nf4 25.Ke3 Nd3 26.Rd3 Qc5 27.Ke2 g6 28.Rc3 Qg1 29.Ke1 Qd4 30.Ne3 a6 31.ba6 Ba6 32.Kf1 b5 33.cb5 Bb5 34.Kg1 Ra8 35.Kh2 Qe5 36.g3 Qe6 (36...Qe6 37.Nd5 Ba4–+) 0–1. Fournier,Frederic (1910) – Stropowsky (1605), Active, 2011.

6.g3 0-0 7.d4 +=.

6.g3 c6 7.Bg2 0-0 8.d3 Qc7 (8...a5 9.Nf3+=) 9.Nd2 b6 (9...a5 10.Ngf3+=) 10.b5 (10.f4!?=) 10...Bb7 11.e4 cb5 12.cb5 Nc5 13.Qe2 Rac8 (13...Na4 14.Rc1 Qd7–/+) 14.Ngf3? (14.f4 Na4 15.Rc1 Qc1 16.Bc1 Rc1 17.Kf2 Nc3–+) 14...h6 (better is 14...Na4!? 15.Nb3 Qd7–+ (15...Nb2?! 16.Qb2 Qc3 17.Qc3 Rc3 18.Nfd2–/+)) 15.0-0 (15.Bh3 Ne6=) 15...Na4 16.Rac1 Qd7 17.Rc8 (17.Rb1 Rc5+=) 17...Rc8–/+ (worse is 17...Bc8 18.Rb1=; 17...Qc8?! 18.Rc1 Qd7 19.Ba1+=) 18.Rb1 Nb2 (18...Rc5 19.Ba1 Rb5 20.Re1–/+) 19.Rb2+= Rc1 20.Nf1 Bc8 (20...Qc7 21.N3d2–/+) 21.a4 (21.Rc2 Rc2 22.Qc2 Bb7=) 21...Qb7 (21...Qc7 22.h3–/+) 22.N3d2 (22.d4 Qc7+=) 22...Be6 (22...Bg4 23.Bf3 Bh3 24.Bg2 Bg2 25.Kg2+=) 23.Nc4 (23.d4 ed4 24.e5 Nd5+=) 23...Qd7 (23...Nd7 24.Qd2 Ra1 25.Ra2+=) 24.Qd2 Ra1 25.Ra2 Ra2 26.Qa2 Bh3 27.Nfe3 Bg2 28.Kg2+= Ng4 29.Nd5 Bf8 30.f3 Nf6 31.Nf6 gf6 32.Ne3 Qe6 33.Qc2 Qd7 34.Qc6 Qe6 35.Nd5 f5 36.Qb7 fe4 37.de4 f5 38.Qa7 f4 39.Qb6 (39.Qb6 Qc8 40.Qc6+-) 1–0. Parron Luceno,David – Santos Martinez,Juan Maria, San Sebastian ESP, 2012.

6.Nc3 0-0 7.d3 c6 8.Nf3 h6 9.Be2 Nbd7 10.0-0 Qc7 11.Rc1 Nb6 12.e4 Nfd7 (12...a5 13.b5=) 13.b5 (13.Nd5 Qd8 14.Ne7 Qe7+=) 13...Qd8 14.Rb1 f5 15.a4 a5 16.bc6 bc6 17.Ba3 Qc7 18.Qc2 Rf7 19.Rb2 g5 20.Rfb1 g4 21.Ne1 f4 22.f3 h5 23.Qd1 Rg7 24.Kh1 Kh7 25.Rb3 Rag8 26.Qd2 h4 27.Qb2 (27.fg4 Bg4 28.Bg4 Rg4+=) 27...Bd8 (better is 27...h3!?+=) 28.fg4+= Bg4 29.Bg4 Rg4 30.Nf3 R8g7 31.Qf2 Be7 32.R1b2 Nc8 33.Qf1+/- Ndb6 34.Qf2 Qd8 35.Qf1 Nd7 36.Qf2 Nf8 37.Rb8 Nd7 38.R8b3 Qg8 39.Rb7 Bd8 40.Qf1+= Bb6 41.c5 dc5 42.Rd7!+/- Rd7 43.Ne5 Qg7 44.Nd7 Qc3 45.Rb1 Bd8 46.Bb2 Qc2 47.Nf6 Bf6 48.Bf6 Nd6 49.Rb8 Nf7 50.e5 Qa2? 51.d4?? cd4+= 52.Qb1?? Qb1–/+ 53.Rb1 Kg6 54.Re1 d3 55.Rd1 Kf5–+ 56.h3 Rg3 57.Bh4 Re3 58.Bf2 Ne5 59.Be1 Nc4 60.Bc3 Ke4 61.h4 Nd6 62.Ba5 Nf5 63.h5 Ng3 64.Kg1 Nh5 65.Be1 c5 66.a5 c4 67.a6 Kd5 68.a7 Re8 69.Ra1 Ra8 70.Ra5 Ke4 71.Rh5 Ra7 72.Bc3 Re7?? 73.Rc5?? d2 74.Bd2+/- ½–½. Holz auf der Heide,Gerhard (1635) – Goettert,Stefan (2195), Leipzig VfB op, 2005.

6.Nc3 0-0 7.Nf3 h6 8.d4 ed4 9.Nd4 Bg4 10.Be2 Qd7 11.Bg4 Ng4 12.Nd5 Bd8 13.h3 Ne5 14.Qc2 Nbc6 15.0-0 (better 15.Nf5!?+/-) 15...Nd4+= 16.Bd4 c6 17.Be5 de5 18.Nc3 f5 19.e4 f4 20.f3? (20.Rfd1 Qe6=) 20...Bh4 (20...Qd4!? 21.Kh2 Qc4-/+) 21.c5 Qe6 22.Rfd1 Rad8 23.Qa2 Qa2 24.Na2 Kf7 25.Kf1 Ke6 26.Ke2 Rd1 27.Rd1 Rd8 28.Rd8 Bd8 29.Nc1 b6 30.Kd3 bc5 31.bc5 Ba5 32.Kc4 Bd2 33.Nd3 Be3 34.Kb4 Bd2 35.Ka4 Bc3 36.Kb3 Bd4 37.Ka4 Bc3 38.Kb3 Bd2 39.Kc4 h5 40.Kb3 Kf6 41.Kc2 Ba5 42.Kd1 g5 43.Ke2 Bc3 44.Kf1 Ke6 45.Ke2 Kd7 46.Kd1 Kc7 47.Kc2 Bd4 48.Kb3 Kb7 49.Kc4 Kc7 (49...Ba1 50.a4=) 50.Kb3 (better 50.h4!? gh4 51.Nf4+/-) 50...Kd7= 51.Kc2 Ke6 52.Kd1 Bc3 53.Ke2 Ba5 54.Kd1 Bc7 55.Ke2 Bd8 56.Kd1 Bc7 57.Ke2 Kd7 58.Kd1 Kc8 59.Kc2 Kb7 60.Kb3 Ka6 61.Kc4 Kb7 62.Kb3 Bb8 63.Kc4 Kc8 64.Kb3 Kd7 65.Kc2 Kd8 66.Kb3 Ke7 67.Kc2 Kf6?? (better 67...Kd8=) 68.Nb4+- Bc7 69.Nc6 a6 (69...a5+-) 70.Nb4 Ba5 71.Kd3 g4 72.hg4 hg4 73.Na6 Kg5 (73...gf3 74.gf3 Ke6+-) 74.c6 Kh4 (74...gf3 75.gf3 Kf6+-) 75.c7 Bc7 76.Nc7 Kg3 77.fg4 Kg2 78.Nd5 f3 (78...Kg1 79.g5 f3 80.Ne3 f2 81.Ke2 f1R 82.Nf1 Kh1 83.g6 Kg2 84.g7 Kh3 85.g8Q Kh4 86.Qg6 Kh3 87.Qg3) 79.Ne3 Kg3 (79...Kg1 80.g5 f2 81.Ke2 f1Q 82.Nf1 Kg2 83.g6 Kh3 84.g7 Kh4 85.Ne3 Kg5 86.g8Q Kh6 87.Ng4 Kh5 88.Ne5 Kh4 89.Qg4) 80.g5 (80.g5 f2 81.g6 Kf4 82.g7 f1Q 83.Nf1 Kg5 84.g8Q Kf6 85.Ne3 Ke7 86.Nd5 Kd6 87.Qd8 Kc6 88.Qc7 Kb5 89.Qb6 Ka4 90.Qb4) 1-0. B4_My_Life (2220) - kofri2013 (2350), Rated Classical game, lichess.org, 2016.

6.Nc3 b6 7.Nf3= c5 (7...0-0 8.d4 a5 9.b5=) 8.d4 cb4 (8...ed4 9.ed4 0-0 10.d5+=) 9.ab4 Nc6?? (better is 9...0-0=) 10.d5+- 1–0. Wall,Bill – Diajor, internet, 1999.

6.Nc3 c6 7.d4 0-0 8.c5 (8.Nf3 Nbd7=) 8...dc5 9.dc5 Qc7 10.Nf3 Rd8 11.Qc2 Nbd7 12.Ng5 Bg4 13.Bc4 Rf8 14.Nce4 Bh5 (14...h6!? 15.Nf3 b5 16.cb6 ab6 17.Nf6 Bf6+= (17...gf6?? 18.Qg6 Kh8 19.Qh6 Kg8 20.Qg6 Kh8 21.Qg4+-)) 15.0-0 Bg6 16.Bd3 h6 17.Nf3 Rad8 (better is 17...Nd5!? 18.Nc3 Bd3 19.Qd3 N5f6+=) 18.Nf6+- Bf6 19.Bg6 fg6 20.Qg6 b6 21.cb6 Qb6 22.Rfd1 Qc7 23.Qc2 Rde8 24.Qc4 Kh8 25.Rd2 (better is 25.e4+-) 25...e4+= 26.Bf6 Nf6 27.Nd4 Rc8? (27...Ng4!? 28.g3 Ne5+=) 28.Rad1 Nd5?? (better is 28...Ng4 29.g3 Qe5+/-) 29.Ne6+- Qe5 30.Nf8 Rf8 31.Qc6 Nf6 32.Rd8 Rd8 33.Rd8 Kh7 34.g3 Qa1 35.Kg2 Qa3 (35...Qa2 36.Rf8+-) 36.Rf8 (better is 36.Qe6 Kg6 37.Rd7+-) 36...Qb2 (36...Qb4 37.Rf7 Qb6+-) 37.Qc7 (better is 37.Qe6 Nh5 38.Qg8 Kg6 39.Qf7 Kh7 40.Qh5+-) 37...Ng4 38.Rf7 (38.Qf4 Ne3 39.Qe3 Qe5 40.Qa7 e3 41.Qe3 Qe3 42.fe3 g5+-) 38...Ne3 39.Kh3 Nf1 (39...Nd5 40.Qd6 (40.Qa7?! Kg6+-) 40...Nf6 41.Qe7+- (41.Ra7?! Qf2 42.Rf7 Qf5 43.Kg2 Qf3 44.Kg1 Qe3 45.Kf1 Qf3 46.Ke1 Qe3 47.Kf1 Qf3 48.Ke1 Qe3 49.Kf1=)) 40.Qa7 (better is 40.Qf4!? h5 41.Qf5 Kh6+-) 40...Qe5 (40...e3 41.Qc5 Qb1+-) 41.Rg7! Qg7 42.Qg7 Kg7 43.Kg4 (better is 43.b5+-) 43...e3 44.Kf3? (44.fe3 Ne3 45.Kh5 Nd5=) 44...Nh2 (better is 44...ef2!? 45.Kf2 Nh2–+) 45.Ke3=+ Ng4 46.Kd4 Nf6 (better is 46...Nf2!? 47.b5 Ng4=+) 47.b5+/- Nd7 48.Kd5 Kg6 49.Kc6 Nb8?? (better is 49...Ne5 50.Kc7 Nd3+-) 50.Kc7 1–0. slavisa99 – Chakra, Live Game Caissa's Web, 2004.

6.Nc3 Nbd7 7.Nf3 h6 8.d4 e4 9.Nd2+= c6 10.Nde4+/- d5 11.Nf6 Nf6 12.c5 0-0 13.Bd3 Bg4 14.Be2 Bf5 15.0-0 b6 16.cb6 ab6 17.Bd3 Qd7 18.Bf5 Qf5 19.Qb1 Qd7 20.Re1 Rfb8 21.Bc1 c5 22.b5 c4 23.a4 Bd6 24.h3 Qe7 25.Re2 Bb4 26.Bd2 Bc3 27.Bc3 Rc8 28.Rea2 Ne4 29.Bb4 c3?? 30.Be7+- Rc4 31.f3 Nd2 32.Rd2! cd2 33.Qd1 Raa4 34.Ra4 Rc1 35.Ra1 Rd1 36.Rd1 f5 37.Rd2 Kf7 38.Bb4 1–0. rommeltdf (1750) – johnb (1865), net–chess.com, 2002.

6.d4 ed4 7.ed4 0-0 8.d5 Bg4 9.Be2 =+.

6.d4 ed4 7.ed4 d5 8.c5 0-0 9.Nf3 (9.Bd3 a5 10.b5 c6 11.b6 Re8 12.Nf3 Bg4 13.0-0 Ne4 14.h3 Bh5 15.Ra2 Bg5 16.Re1 Nd7=) 9...a6 (9...a5 10.b5 (10.Bd3= ab4 11.ab4 Ra1 12.Ba1 Re8 13.0-0 b6 14.Qc2 Nc6 15.Bc3 Ne4 16.Re1 Nc3=) 10...c6 11.b6 Bf5 12.Bd3 Ne4 13.Nc3 Re8 14.0-0 Nd7 15.Re1 Bf6 16.Qc2 Bg6+=) 10.Bd3 Nc6 (10...Re8 11.0-0 Nbd7 12.Re1 Ne4 13.Qc2 Ndf6 14.Ne5 h6 15.f3 Ng5 16.Bc1 b6+=; 10...a5 11.b5 Re8 12.0-0 Nbd7 13.Nc3 Bg4 14.h3 Bh5 15.Re1 Nf8 16.Bc1 Ne6+=; 10...Ne4 11.0-0 Re8 12.Re1 f5 13.Ne5 Bh4 14.Re2 Nd7 15.f3 Nef6 16.c6 bc6+=) 11.Nbd2 (11.0-0 Re8 12.Ne5 a5 13.Nc6 bc6 14.ba5 Ra5 15.Re1 Qd7 16.Qc2 Bg4+=) 11...Nd7 (11...Nh5 12.Qc2 Nf4 13.Bh7 Kh8 14.Bf5 Ng2 15.Kd1= Qd7 16.Be6 Qe6=) 12.0-0 (12.Qc2 h6 13.0-0 Re8 14.Rfe1 Bg5 15.Ng5 Qg5 16.Re3 Qf6+=) 12...f5 (12...Re8 13.Qc2 h6 (13...g6 14.Rfe1+= Bf8 15.Re2 Bg7 16.Rae1 Qf6+=) 14.Rfe1 Bg5 15.Ng5 Qg5 16.Re3 Qf6+=) 13.Re1+/- Rf6 14.Ng5 Bf7 (14...Nf8 15.Ndf3+/- Bc8 16.Ne5 a5+/-) 15.Nf7 (15.Nf1 Bg6 16.Qb3 Kh8+-) 15...Rf7 16.Qf3 (16.Nf3 Nf8+/-) 16...Nf8 (16...Bg5+/-) 17.Qh3 (17.Bf5 g6–+) 17...g6 (17...Qd7 18.Nf3+/-) 18.Nf3 Bg5 19.Qg3 Bh6 20.b5 (20.Re2 Bg7+/-) 20...ab5 21.Bb5 Nd7 22.Re6 Nf8 23.Re2 Re7 24.Rae1 Re2 25.Re2 Rc8 26.Bc6 bc6 27.Ne5 Qf6 28.Qb3 Bf4 29.Nd3+- Bh6 30.Qb7 Rd8 31.Qc7 Rd7 32.Qb6 Re7 33.Re7 Qe7 34.Qc6 Qe4 35.Qb5 Bg7 36.c6 Ne6 37.h3 Bd4? 38.Bd4 Nd4 39.Qb8 Kg7 40.Qe5 Kf7?? 41.c7 Ne2 42.Kh2 Qc4 43.Qd6 Qc3 44.Ne5 Kg7 45.Nd7 (45.Nd7 Kh6 46.Qf8 Kh5 47.c8Q Qd4 48.g4 Qg4 49.Nf6 Kg5 50.Ng4 Kf4 51.Qh6 g5 52.Qhe6 fg4 53.Qf8#) 1–0. Kanivtsova,Nadezhda – Shchipanova,Swetlana, Femida Open, Kharkov UKR, 2003.

6.d4 ed4 7.ed4 d5 8.c5 c6 (8...0-0 9.Nf3=+) 9.Nf3 Nbd7 (9...Bf5 10.Bd3 Bd3 11.Qd3=) 10.Nc3 (10.Bd3 0-0=) 10...0-0 11.Be2 (11.Bd3 Re8=) 11...Bf5 (11...Re8 12.0-0=) 12.0-0 Ne4 (12...Qc7 13.Re1=) 13.Bd3 Ndf6 (13...Re8 14.Re1=) 14.Re1 Nc3 15.Bc3 Ne4 16.Bb2 Qc7 (16...Re8 17.Qc2+=) 17.Be4 (17.Qc2!?+=) 17...Be4= 18.Qe2 Rae8 19.Nd2 Bg6 20.Nf3 Bc5 (better 20...Qf4=+) 21.Qd2?? (better 21.Qe8 Re8 22.Re8 Bf8 23.Rae1=+) 21...Bd6–+ 22.h3 (22.Ne5 Be4 23.f3 Bf5–+ (23...Be5?! 24.de5 Bf5 25.Rac1=+)) 22...Bf4 (22...Be4 23.Qc3–+) 23.Qc3 f6 (23...Be4 24.Ne5–+) 24.Bc1 (24.Rad1 Be4–+) 24...Re4 (24...Re1 25.Qe1 Re8 26.Qc3–/+) 25.Re4 (25.Bf4 Qf4 26.Qc5 a6–/+) 25...Be4 26.Bf4 Qf4 27.Qe3 (27.Nd2 Re8–/+) 27...Qc7 (27...Qe3 28.fe3 Re8 29.Kf2–+) 28.Nd2 (28.Re1 Re8–/+) 28...Bg6 29.Nf3 Re8 30.Qc3 Be4 (30...Qf4 31.Qc5–/+) 31.Nd2 Bg6 (31...Bf5 32.b5–/+) 32.Nf3 Be4 (better 32...Qf4!?–/+) 33.Nd2= Bg6 (better 33...Bf5!?–/+) ½–½. Szymanska,Maria – Bartosik,Lech, Kielce Poland, 1993.

6.d4 ed4 7.Bd4 Nc6 =+.

6.d4 Nbd7 7.Bd3 ed4 8.ed4 Nf8 (8...d5 9.c5=) 9.Nf3 (9.d5 Bg4 10.Nf3 Ng6+=) 9...Bg4 10.0-0 Ng6 11.Nbd2 0-0 12.Bg6 hg6 13.h3 g5?? (better is 13...Bf5+=) 14.hg4+- Ng4 15.Ng5?? (better is 15.d5+-) 15...Bg5+/- 16.Nf3 (16.Qg4 Bd2 17.d5 Qg5 18.Qg5 Bg5+/-) 16...Qf6 17.Ng5 Qg5 18.d5?? f5 19.Qd4 f4 20.Rae1?? Rae8?? 21.Re8= Re8 22.Rd1?? f3 23.g3 Qh5?? 24.Qg7 1–0. Fournier,Frederic (2155) – Albertic (2095), Active (1/0), 2003.

6.d4 e4 7.d5= Bd7 (7...Bf5 8.Ne2=) 8.Nc3 0-0 (8...a5 9.Qb1+=) 9.Nge2 Bg4 (9...Re8 10.Ng3+=) 10.h3 (10.Qc2 a5 11.Ne4 ab4 12.ab4 Ra1 13.Ba1 Re8+/-) 10...Bh5 (10...Be2 11.Be2 a5 12.0-0+/-) 11.g4+/- Bg6 12.Nf4 c6 13.h4 Ng4? (better is 13...h5 14.g5 Ng4+-) 14.Ng6 Nf2 (14...fg6 15.Qg4 Bf6 16.Qe4+-) 15.Ne7 (15.Kf2?! fg6 16.Ke2 Bf6+-) 15...Qe7 16.Kf2 f5 (16...a5 17.dc6 Qf6 18.Ke1 ab4 19.ab4 Nc6 20.Ra8 Ra8 21.b5+-) 17.c5! f4 (17...dc5 18.Bc4 Decoy) 18.Bc4 (18.dc6 fe3 19.Ke3 Rf3 20.Ke2 Nc6 21.Qd5 Kh8 22.Ne4 Rb3+-) 18...fe3 (18...Kh8 19.dc6 Qf6 20.Ke1 (20.cd6 fe3 21.Kg3 Qg6 22.Kh3 Rf3 23.Qf3 ef3–+; 20.Qd6 fe3 21.Ke1 Qf2 22.Kd1 Nc6+-) 20...Nc6 21.Qd6+-) 19.Ke3 Rf3 20.Ke2 Qf7 (20...Kh8 21.Qd4 Rf7 22.Qe4 dc5 23.d6+-) 21.Ne4 Rf4 (21...dc5 22.Rg1 g6 23.bc5+-) 22.Qd3 (better is 22.Nd6 Qe7 23.Kd3 b5+-) 22...Kh8 (22...Qh5 23.Ke1 b5 24.cb6 Qg6+-) 23.Rhg1 Qh5 24.Kd2 Rg4 25.Bg7! Kg7 (25...Rg7 26.Rg7 Combination; 25...Kg7 26.Rg4 Double attack) 26.Qc3 Kh6 27.Rg4 Qg4 28.Qf6 Qg6 29.Qf8 Kh5 (29...Qg7 30.Qf4 Kg6 31.Rg1 Kh5 32.Be2 Qg4 33.Qg5) 30.Be2 Kh4 (30...Qg4 31.Qf5 Kh6 32.Qg4 cd5 33.Qg5) 31.Rh1 1–0. Janek – figjjun, internet, 2017.

6.Nf3 c6 7.Qc2 Nbd7 8.Nc3 0-0 9.d4 ed4 10.ed4 (10.Nd4 a5=) 10...Re8 11.0-0-0 a5 12.Ng5 Bg4 13.f3 Bh5 14.Bd3 h6 15.Nge4 ab4 16.ab4 Ne4 17.Ne4 f5?? (better 17...Bg6-+) 18.Ng3= Bg5 19.Kb1 Bg6 20.Nf5 Nb6 21.h4 Bf4 22.g3 Bf5 23.Bf5 (worse 23.gf4 Bd3 24.Qd3 d5 25.cd5 Nd5-/+) 23...Bg3? (23...Be3 24.d5 cd5 25.cd5 Na4 26.Be6 Kh8+=) 24.Rhg1?? (better 24.Rdg1 d5 25.Rg3+-) 24...Qh4= 25.Bh7 Kh8 26.Qg6 Nc4 27.Rg3 Re7 28.Rdg1?? (better 28.f4!?=) 28...Qf4?? (28...Nb2 29.Qg4 Qg4 30.Rg4-+) 29.Qd3?? (better 29.Rd1 Nb2 30.Kb2-+) 29...Nb2-+ 30.Kb2 (30.Qc2-+) 30...Re3 31.Rg4 (31.Qc4 b5 (31...Kh7?? 32.Rg7 Kh8 33.Rg8 Rg8 34.Qg8) 32.Rg4 bc4 33.Rf4 Kh7-+) 31...Qf3 (31...Rd3?! 32.Rf4 Kh7 33.Rf7-/+) 32.R1g3 (32.Qc2 Re2 33.R4g3 Qf2 34.Qe2 Qe2 35.Bc2 Qc4-+) 32...Rd3 (32...Qf2 33.Qc2 Qe1 34.Rg1 Qb4 35.Kc1 Ra1 36.Qb1 Qc3 37.Kd1 Rd3 38.Bd3 Qd3 39.Ke1 Rb1 40.Kf2 Rb2 41.Ke1 Qe2) 33.Bd3 (33.Rf3 Rf3 34.Bg6-+) 33...Qf2 (better 33...Qd1 34.Bb1 Rf8 35.Rg7 Rf2 36.Ka3 Rf3 37.Rf3 Qf3 38.Kb2 Qf2 39.Kc1 Qe1 40.Kc2 Kg7 41.d5-+) 34.Bc2 Qd2 35.Kb3 (35.Rg2 Qb4 36.Bb3-+) 35...b5 (35...Qc1 36.d5 Ra3 37.Kc4 Qc2 38.Kd4 c5 39.bc5 Qa4) 36.Rg7+- (36.Rg7 Qe3 37.Re3 Kg7 38.Re6+-) 1-0. is_er_nog_hoop (2560) - jokido (2420), Rated Blitz game, lichess.org, 2016.

6.Nf3 Nc6 =+.

6.Nf3 Qd7 7.d3 0-0 8.Nc3 c6 9.Be2 b6 10.0-0 d5? (better 10...Re8!?=) 11.cd5 cd5 12.Rc1 (12.Ne5 Qb7+-) 12...Bd6 13.e4?? (better 13.Nb5! Qb5 14.d4+-) 13...d4=+ 14.Nb1 Qe7 (14...a5 15.ba5 Ra5 16.Ng5=+) 15.Nbd2 Nbd7 16.Nc4 Bc4 17.Rc4 b5 18.Rc2 a6 (18...a5 19.Nh4 ab4 20.Nf5=) 19.Qd2 Rac8 20.Rfc1 Rc2 21.Rc2 Nb6 22.Rc6 Na4 23.Ra6 Rd8 24.Rc6 Qb7 25.Rc1 Nd7 26.Bd1 Nb2 27.Qb2 Rf8 28.Bb3 Kh8 29.Bd5 Qb8 30.Nd2 (better 30.Ng5!? Kg8 31.Qb3+-) 30...Nb6 31.Bb3 f5 32.f3 fe4 33.fe4 Qe8 34.Nf3 Qg6 35.Rc6 Nd7 36.Bd5 (better 36.Nh4!? Qg5 37.Nf5+- (37.Rd6?? Qe3 38.Qf2 Qf2 39.Kh1 Qf1)) 36...Nb8 37.Rb6 Rf3 38.Rb5?? (better 38.Rd6 Qd6 39.gf3+=) 38...Rd3–+ 39.Qf2 (39.Qc2 Rc3 40.Qd2 Ra3 41.g3–+) 39...Qf6 (better 39...Rd1 40.Qf1 Rf1 41.Kf1 d3–+) 40.Qf6=+ gf6 41.a4 (41.Rb6!? Bc7 42.Rf6=+) 41...Rd1 42.Kf2 Rb1 (better 42...Rd2 43.Kf3 Rd3 44.Kg4 Bc7=+) 43.a5?? (better 43.Rb6 Rb2 44.Kf3+=) 43...Rb4 44.Rb4 (44.Rb7–+) 44…Bb4 0–1. Fournier,Frederic – ladrover (1730), Active, 2008.

6.Nf3 Nbd7 7.Nc3 0-0 (7...e4 8.Nd4 0-0 9.Qc2+=) 8.Be2 (8.d4 e4 9.d5 Bg4=+) 8...Nh5 (8...e4 9.Nd4=+) 9.Qc2 (9.0-0 Nb6 10.d3 Nf6=) 9...f5 (9...Nb6 10.d3=+) 10.h4 (10.0-0!?+=) 10...f4 11.Ng5 Bf5 (11...Bg5 12.hg5) 12.e4 h6? (better is 12...f3 13.Nf3 Be6+/-) 13.ef5+- hg5 14.Bh5 gh4 15.0-0-0 a5 16.Nd5 Bg5 17.Kb1 c6 18.Nc3 ab4 19.ab4 Qb6 20.Qb3 Qf2 21.Ne4 Qa7 22.Ng5 Rf5 23.c5 d5 24.Rh4?? Rg5+/- 25.Kc1 Rg3 26.Qc2 Rg5? 27.Rdh1 Kf8? 28.Rf1 Qa4 29.Bg4 Nf6 30.Rh8 Ke7 31.Ra8 Qa8 32.Bh3 Qa6 33.Re1 d4? 34.Bd4+- Qa3 35.Bb2 Qb4 36.Be5 Re5 37.Re5 Kf7 38.Qa2 Nd5 39.Be6 Kf6 40.Re2 Qc5 41.Qc2 Qg1 42.Kb2 Qb6 43.Qb3 Qd4 44.Kb1 Qg1 45.Kc2 Qc5 46.Kd1 Qg1 47.Re1 Qd4 48.Bd5 cd5 49.Qc3 Qc3 50.dc3 g5 51.Kd2 Kf5 52.Kd3 Kg4 53.Re5 Kh4 54.Rd5 g4 55.Ke4 Kg3 56.Rg5 b6 57.c4 f3 58.gf3 Kh4 59.Rg4 (59…Kh5 60.f4+-) 1–0. Popkirova,Kalina – Dunkel,Andreas, DVMi U15 Fredeburg, 1995.

6.Nf3 Nbd7 7.d3 c5 8.b5 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Nb6 12.Be2 0-0 13.0-0 Nfd7 14.Bc3 f5 15.Nbd2 Bf6 16.Qb3 Qe7 17.Ra1 g5 18.h3 h5 19.Qb2 g4 20.hg4 fg4 21.Ne1 Bg5 22.d4 cd4 23.ed4 e4 24.Ne4+= Bf5? 25.Ng5+- Qg5 26.d5 Nf6 27.Bf6 Rf6 28.Ra7 Rf7 29.Ra3 Kh7 30.Re3 Nc4?? 31.Bc4+- h4 32.Qd4 Kh6 33.Bd3 Bd7 34.Qe4 Bf5 35.Qd4 Bd7 36.Qb6 Qd5 37.Qd8 Qd4 38.Qh4 Kg7 39.Qh7 Kf6 40.Qg6 1–0. Fournier,Frederic (1795) – teimosa, Club Owl21 Owl21.com, 2008.

6.Nf3 h6 7.d3 0-0 8.Be2 Nh7 9.0-0 f5 10.Nbd2 Nd7 11.e4 fe4 12.de4 Ng5 13.Ng5 Bg5 14.Nf3 Bf4 15.Qd3 Qf6 (15...a5 16.Rfd1=) 16.Rad1 (16.g3!? Qg6 17.Nh4+/-) 16...Qg6 17.g3 Bh3 (17...Nb6 18.Qc2 Bd7 19.Qd3=) 18.Rfe1 Bg5 (18...Kh7=) 19.Bc1 (better is 19.Ng5 Qg5 20.Qd5 Kh7 21.Qb7+/-) 19...Bc1+= 20.Rc1 Nf6 21.Bf1 Bf1 22.Kf1 Qg4 23.Kg2?? (better is 23.Rc3+=) 23...Nh5–+ 24.h3 (24.Ne5 de5 25.Qd1 Nf4 26.Kh1–+) 24…Nf4 (24...Nf4 25.Kg1 Nh3 26.Kh2 Rf3 (26...Qf3?! 27.Qf3 Rf3 28.Kh3–+) 27.Qf3 Qf3 28.Kh3 Qa3–+) 0–1. Fournier,Frederic (1950) – blc43 (1755), Active, 2011.

6.Nf3 h6 7.d4 ed4 (7...0-0 8.Nc3=) 8.Nd4= (worse is 8.Qd4 0-0+=; worse is 8.Bd4 0-0+=) 8...Nc6 (8...Bd7!?=) 9.Ne6+= fe6 10.Be2 e5 (10...0-0!?+=) 11.Nc3+/- 0-0 12.Nd5 Ne4 (12...Kh8!?+/-) 13.Nc7 (13.Nc7 Nd4 14.ed4 Nf2 15.Qb3 Nh1 16.Na8+/-) 1–0. forsetinn (2325) – phildo (1905), gameknot.com, 2014.

7.Nc3 Nbd7 8.Be2 Nb6 9.d3 c6 10.0-0 h6 11.e4 a5 12.b5 Qc7 13.Rc1 Qb8 14.Rb1 a4 15.Qd2 Nfd7 16.bc6 bc6 17.Nd1 Nc5 18.Qc2 Bf6 19.d4 Nb3 20.de5 de5 21.Ne3 Nd7 22.Rfd1 Ndc5 23.Nf1 Qc7 24.Ng3 Nd7 25.h3 Be7 26.Nf5 Bc5 27.N3h4 Kh7 28.Nf3 f6 29.Ne1 g6 30.Nh4 Bb6 31.Nd3 Ndc5 32.Nb4 Rfd8 33.Nf3 Kg7 34.Na2 Qb7 35.Nb4 h5 36.Ne1 Nd4 37.Bd4 Rd4 38.Rd4 ed4 39.Bf3 Bd7 40.Qd1 Nb3 41.Ned3 Bc7 42.Nb2 Be5 43.N4d3 c5 44.Ne5 fe5 45.Nd3 Qc7 46.Bh5 Be6 47.Be2= Bc4 48.Nb2 Be6 49.Bc4 Bc4 50.Nc4 Rf8 51.Qc2 Rb8 52.Qd3 ½–½. Benassi,Aspasio – Migliorini,Roberto, amichevole, 1999.

7.Nc3 Nbd7 8.Be2 Re8 9.0-0 Nf8 10.d4 ed4 11.Nd4 Bd7 12.Qc2 c5 13.Nf5+/- Qc7 14.Nd5 Bf5 15.Ne7 Qe7 16.Qf5 N8d7 17.Rfd1 Qe6 18.Qe6 Re6 19.Kf1 Rae8 20.Bf3 b6 21.Bb7 Ne5 22.Ba6 Rd8 23.f3 d5 24.cd5 Rd5 25.e4 Rd1 26.Rd1 Re8?? 27.Bb5+- Ng6 28.Bf6 (28...Ra8 29.Bb2+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

7.Nc3 Nbd7 8.h3 Nb6 9.d3 Nfd7 10.e4 f5 11.Nd5 fe4 12.de4 c6 13.Ne7 Qe7 14.Rc1 d5 15.ed5 cd5 16.cd5 Bd5 17.Be2 e4 18.Nd4 e3 19.0-0 ef2 20.Rf2 Qe3 21.Nf3+= Rac8 22.Rc8 Rc8 23.Qd4 Qd4 24.Nd4 Na4 25.Ba1 (better is 25.Nf5!? Rc2 26.Bf3 Rb2 27.Bd5 Kf8 28.Bb7+-) ½–½. Amor Alcaide,Manuel – Aoiz Linares,Jose Javier (2310), St Cugat op, 1994.

7.d3 c6 8.Be2 Nbd7 9.Ng5 h6 10.Ne6 fe6 11.Nd2 c5 12.b5 Qe8 13.0-0 d5 14.Nf3 d4 15.ed4 (15.Qc2!?+=) 15...ed4= 16.Re1 Qf7 17.Bf1 Nh5 18.Bc1 Bd6 19.Qe2 Rae8 20.Qe4 b6 21.Qg4 (21.Qb7 Ne5 22.Qf7 A) 22...Kf7?? 23.Ne5 (23.Re5?! Be5 24.Ne5 Kg8+-) 23...Be5 24.Re5+-; B) 22...Nf7+=) 21...Nhf6 (better is 21...Ne5! 22.Re5 Be5 23.Bh6 Qf5 24.Qf5 ef5–/+) 22.Qh3 e5 23.Bd2 (23.Ra2 e4 24.de4 Ne4=) 23...Nh5 (23...e4 24.de4 Ne4+=) 24.g3 (24.Re2 Ndf6=) 24...Re7 (better is 24...Qf3 25.Qd7 Qf2 26.Kh1 Qd2–/+) 25.Bg2= Nhf6 (25...Ree8 26.a4=) 26.Nh4+= Bb8? (better is 26...Re6+=) 27.Nf5+- Ree8? (27...Qe6+-) 28.Bh6! Nh5 (28...gh6 29.Nh6 Double attack) 29.Bd5 (29.Bd5 Re6 30.Bg7 Ng7 31.Nh6 Rh6 32.Bf7 Kf7 33.Qh6+-) 1–0. Fournier,Frederic (1815) – villarriqueno (1695), Active, 2008.

7.d4 ed4 8.Nd4 Qd7 9.Be2 c5 (9...Bg4 10.Nc3+=) 10.Ne6+= Qe6 11.Nc3 Nc6 (11...Nbd7!?+=) 12.Nd5+/- Rac8 13.0-0 Ne5?? (better 13...h5+/-) 14.f4+- Nc6 (14...Nd5 15.cd5 (15.Qd5?! Qd5 16.cd5 Nd7+=) 15...Qh6 16.fe5 Qe3 17.Kh1 de5 18.Rf3+-) 15.Bf6 (15.Ne7?! Ne7 16.Bf6 Qf6+=) 15...Bf6 (15...gf6 16.Bd3 f5 17.Rf3+-) 16.Bg4 Qe8 17.Nf6 (worse 17.Bc8 Ba1 18.Bb7 Nd8+-) 17...gf6 18.Bc8 Qc8 19.Qd6 cb4 (19...Qe6 20.Qc5 b6 21.f5 bc5 22.fe6 fe6 23.bc5+-) 20.ab4 Rd8 (20...Qd8 21.Qd8 Rd8 22.b5+-) 21.Qf6 Nb4 (21...Rd3+-) 22.Qg5 Kf8 23.f5 Rd2 (23...Nd3 24.Rfd1 Rd6+-) 24.f6 Qc4 25.Ra7 Ke8 (25...Rc2 26.Ra8 Qc8 27.Qa5 Ke8 28.Qb4 Rg2 29.Kg2 Kd7 30.Qd4 Kc6 31.Rc1 Kb5 32.Qb2) 26.Rb7 Nc6 (26...Qc7 27.Qg8 Kd7 28.Qf7 Kd6 29.Qc7 Ke6 30.Rb6 Nc6 31.Rc6 Kd5 32.Rd6 Ke4 33.Qe7) 27.Qg8 1-0. Vendelo – salcov, internet, 2021.

7.d4 e4 8.Nfd2 c6 9.Nc3 d5 10.Be2 a5 11.ba5 Qa5 12.cd5 cd5 13.Qb3 Nbd7 14.0-0 Rfc8 15.Rac1 Nb6 16.Rc2 Bd7 17.Rd1 Na4 18.Re1 Nb2 19.Qb2 Qa3 20.Qa3 Ba3 21.Rb1 Ba4 22.Nb3 Bb4 23.Nc5 Bc2 24.Rb4 Ra1 25.Bf1 Bd3 26.Nd3 ed3 27.Rb1 Rb1 28.Nb1 Rc1 0–1. marekt – cairo, gameknot.com, 2001.

7.Be2 a5 8.b5 c6 9.Nc3 Nbd7 10.0-0 Nb6 11.d3 Nfd7 12.bc6 bc6 13.e4 Rb8=+ 14.Qc2 f5 15.Rfd1 Qe8=+ 16.Na4?? Na4–+ (17.Be5 fe4 18.de4 Ne5 (18...de5?! 19.Qa4 Nc5 20.Qc2–+) 19.Qa4 Rb2–+) 0–1. RageofKlugman – oldsage, ChessWorld.net, 2006.

7.Be2 a5 8.b5 c6 9.Nc3 Nbd7 10.0-0 d5 11.bc6 bc6 12.cd5 cd5 13.Nb5 Qb8 14.a4 Rc8 15.d3 Bb4 16.Rc1 Rc1 17.Qc1 Ra6 18.Qc2 Rb6 19.d4 e4 20.Ne5 h6 21.Nc6 Qa8 22.Rc1 Ne8 23.Bf1 Ndf6 24.Ne5 Rb8 25.Qb3 Rb7 26.Nc6 Bf8 27.Ba3 Ba3 28.Qa3 Bd7 29.Ne7 Kh7 30.Qc5 Be6 31.Nc6 Bd7 32.Qc3 Bc6 33.Qc6 Kg8 34.Rc5 Kh7 35.Be2 Kg8 36.f3 Qb8 37.Qa6 1–0. Cetilak – JEB_Stuart, ACL–E113 playchess.de, 2003.

7.Be2 Nbd7 8.0-0 h6 9.d4 e4 10.Nfd2 d5 11.c5 c6 12.Nc3 Nh7 13.b5 f5 14.Bh5 f4 15.ef4 Rf4 16.Bc1 Rf8 17.bc6 bc6 18.Bg4 Bg4 19.Qg4 Rc8 20.Nd1 Bg5 21.Ne3 Be3 22.fe3 Rf1 23.Nf1 Ng5 24.Ng3 Qf6?? 25.Bd2 Rf8? 26.Rf1 Qe7 27.Rf8 Qf8?? 28.Qd7+- Nf3 29.gf3 Qf3 30.Qe6 Kh8 31.Qe8 Kh7 32.Qe6 Qd1?? 33.Kg2 Qd2 34.Kh3 Qe3 35.Qf5 Kg8 36.Qc8 Kh7 37.Qf5 Kg8 38.Qe6?? Kh7= 39.Qc6 1–0. slavisa3 – takeiteasy, Live Game Caissa's Web, 2004.

6.Nc3 0-0 7.d3 c6 8.Nf3= Bg4 9.h3 Bd7 10.Be2 h6 11.0-0 Be6 12.e4+= Nbd7 13.d4 ed4 14.Nd4 Re8 15.f4 Nf8 16.Qd3 Rc8 17.Rab1 c5 18.Ne6+/- fe6 19.Qg3 cb4 20.ab4 Qb6 21.Kh2 Qb4?? 22.Nd5!+- Qb2 23.Ne7 Re7 24.Rb2 b6 25.Qd3 Ree8 26.Ra1 Ra8 27.Bf3 d5 28.ed5 ed5 29.cd5 1–0. x_mt – mahmod, internet, 2009.

6.Nc3 0-0 7.d3 Qd7 8.Nf3 Rc8 9.e4 Bg4 10.Be2 c5 11.0-0 =.

6.Nc3 0-0 7.d3 Re8 8.Nf3 a6 9.Be2 Nc6 10.0-0 Qd7 11.Nd5 =.

6.Nc3 0-0 7.Nf3 a6 8.Nh4 Be6 9.g3 (9.Nf3 Nc6=+) 9...Nfd7 (9...d5 10.cd5 Nd5 11.d4 ed4 12.Qd4=+) 10.Bg2 Bh4 (10...Bc4?! 11.Nf5 Be6 12.Ne7 Qe7 13.Bb7+=) 11.gh4 Nf6 12.Bb7 Ra7 13.Bf3 Qd7 (13...Bc4 14.h5=) 14.Ne4 (better is 14.d3!?+=) 14...Ne4= (14...Bc4? 15.Nf6 gf6 16.Be4+-) 15.Be4 d5 (15...f5 16.Bd5=) 16.Bb1 (16.cd5 Bd5 17.Qf3 Be6+=) 16...d4 17.Qc2 d3 (better is 17...f5+=) 18.Qd3+- Qd3 19.Bd3 f5 (19...a5+-) 20.Be5 f4 (20...Nd7 21.Bc3+-) 21.Bd4 Rb7 22.Be4 c6 23.Ke2 (23.d3 Bf5+-) 23...Rd7? (23...Bc4 24.d3 f3 25.Kd2+-) 24.Bc5 (better is 24.d3!? Bf5+-) 24...Bc4 25.d3 Bd3?? (25...f3 26.Kd2 Re8+-) 26.Bd3 Re8 (26...f3 27.Kd2 Rfd8 28.Bd4+-) 27.Rad1 fe3 28.Bh7 (better is 28.fe3 Kh8 29.h5+-) 28...Kh7 29.Rd7 (29.fe3 Rd5+-) 29...Nd7 30.fe3 Ne5 (better is 30...Nc5!? 31.bc5 Re5+/-) 31.Rf1 Nc4 32.Bd4 (better is 32.a4+-) 32...Nb2?? (better is 32...Na3 33.Kd3 Nb5+-) 33.Rf8 (better is 33.Bb2 Re4 34.Rf7 Rh4 35.Be5+-) 33...Rf8=+ 34.Bb2 Re8 35.Bd4 Rf8 36.Kd3 Re8 37.Kc4 Re6 38.Kc5 Rg6 39.Kb6 Rg2 (better is 39...c5!? 40.Kc5 Rh6+-) 40.a4 Rh2 41.Ka6 Rh3? (41...Rh4 42.Kb7 g5+-) 42.Kb6 Rh4 43.a5 Rh6 44.a6 (better is 44.Kb7 Rh5 45.Kc6 Rh6 46.Kc7+-) 44...Rd6 (44...c5 45.Kb7 Ra6 46.Ka6 cb4+-) 45.Bc5 (better is 45.Kc7!? Re6 46.Kd7 Rh6+-) 45...Rd7 (45...Rd8 46.Kc6 g5 47.a7+-) 46.a7 Rd8 (46...Ra7 47.Ka7 Kh8 48.Kb6+-) 47.Kc6 g5 48.Kc7 (better is 48.b5!? g4 49.Bd6 Ra8+-) 48...Rf8 (49.Bf8 Kg6 50.a8Q Kh5 51.Qf3 Kh4 52.b5 g4 53.Be7 Kh5 54.Qf5 Kh6 55.Bf8; 48...Rg8+-). slavisa99 – SirCharles, Live Game Caissa's Web, 2004.

6.Nc3 c6 7.d4 ed4 8.ed4 0-0=+ 9.Nf3 Re8 10.Be2 Ne4 11.0-0= Nc3 12.Bc3 Bf6 13.Bd3 Bd3 14.Qd3 Na6 15.a4 d5 16.c5 Nc7 17.Rfe1 Qd7 18.Reb1 Ne6 19.g3 a6 20.b5 ab5 ½–½. Zak,Klaudia – Dutka,Justyna, Krynica Poland–chT U20 2nd div, 2001.

6.Nc3 Nc6 7.b5 Na5 8.Nf3 =+.

6.Nc3 Nc6 7.b5 Nb8 8.Qf3 =.

6.Nc3 Nbd7 7.d4 Ne4 8.Nf3 Nc3= 9.Bc3 ed4 10.ed4 Nf6 11.Be2 0-0 12.0-0 Re8 13.Re1 Qd7 14.Bd3+= Rad8 15.h3 d5 16.c5 a6 17.Qc2 Bd3 18.Qd3 Ne4 19.Bb2 Bf6 20.Nd2 Nd2 21.Qd2= Re7 22.Re7 Qe7 23.Re1 Qd7 24.Kf1 Re8 25.Re8 Qe8 26.Qe2 Kf8 27.Qe8 Ke8 28.Ke2 Ke7 29.Ke3 Ke6 30.f3 h5 31.g4 hg4 32.hg4 c6 33.Bc3 g5 34.Bb2 Bg7 35.f4 Bh6 36.fg5 Bg5= 37.Kf3 f5 38.Kg3 fg4 39.Kg4 Kf6 40.Bc3 Bc1 41.a4 Kg6 ½–½. Szymanska,Maria – Szydlowska,Malgorzata, Wisla, 1993.

6.d3 0-0 7.Nf3 e4 (7...Nbd7!?=+) 8.de4+= Ne4 9.Bd3 Bf6 10.Bf6 (10.Nd4!? Bd4 11.Bd4=) 10...Qf6=+ 11.Nbd2 (better is 11.Be4 Be4 12.Qd4=+) 11...Nc3?? (better is 11...Nd2 12.Kd2 Bd3 13.Kd3 Nd7–/+) 12.Qc2= Bd3 13.Qd3 Na4 14.0-0 Nd7 15.Ne4 Qe7 16.Qc2 Nab6 17.Rfe1 Rad8 18.Ng3 Ne5 19.Rad1 Nf3 20.gf3 Qf6 21.Qd2 Qf3 22.Qe2 Qf6 23.Qg4 Rfe8 24.Qf4? Qf4–+ 25.ef4 Nc4 26.Re8 Re8 27.Rc1 Na3 28.Rc7 g6 29.Rb7 Re1 30.Kg2 Nc4 31.Ra7=+ Nd2 32.Rd7 Nc4 33.b5 h5 34.b6 Nb6 35.Rd6 Nc4 36.Rc6 Nd2 37.Rc8 Kg7 38.Rc2= (38...Nb3 39.h4=). lidl2 – takeiteasy, Live Game Caissa's Web, 2004.

6.d4 Bb1 7.Rb1= e4 (7...ed4 8.Qd4 Nc6 9.Qf4+=) 8.Ne2+= 0-0 9.Qc2 d5 10.Nc3 (10.cd5 Qd5 11.Ng3 b5+-) 10...c6 11.Be2 Nbd7 12.0-0 Rc8 (12...a5 13.b5+=) 13.c5 (13.Rbc1 a5+-) 13...b5 (13...Qc7 14.f3 ef3 15.Rf3+=) 14.a4 ba4? (better 14...a6+-) 15.Qa4+- Qc7 16.b5 cb5 (16...Qb7 17.h3+-) 17.Nb5 Qc6 18.Ra1 Rb8 (18...Ra8 19.Na7 Qc7 20.Qa5 Qa5 21.Ra5+-) 19.Qa6 Qa6 (19...Rfc8 20.Rfb1+-) 20.Ra6 Ra8 (20...Rfc8 21.Rfa1+-) 21.Rfa1 h6 (21...Rfc8 22.Ra7 Ra7 23.Ra7+-) 22.Bc3 (better 22.c6 Nb8 23.Ra7 Ra7 24.Ra7 Nc6+-) 22...h5 (22...Bd8 23.R6a2+-) 23.c6 Nb6 (23...Nb8 24.Ra7 Ra7 25.Na7+-) 24.Na7 (24.Na7 Nc8 25.c7+-) 1–0. Barcarola (1685) – wjdfo, internet free game, 2018.

6.d4 Nbd7 7.Nd2 0-0 8.Qf3+= Bg6 9.Qb7 ed4 10.Bd4 c5 11.Bc3 Nb6 12.Rd1 d5 13.Bf6+- Bf6 14.bc5 Na4 15.Qd5 Qc7 16.Qd6+/- Qa5 17.c6 Rfd8 18.Qb4+- Bc3 19.Qa5 Ba5 20.c7 Rd7 21.Ngf3 Rc7 22.h4 Rd8 23.h5 Be4 24.Rh3?? Rcd7?? 25.Nd4+= Rd4? 26.ed4+- Rd4 27.Rb3 h6 28.Rb4! Nc3 29.Ra1 Kh7? 30.Nb3 (30...Bb4 31.Nd4+- (31.ab4?! Rd7+-); 30.Ne4?! Ne4 31.g3 g5+-) 1–0. mtra – myapples, internet, 2002.

6.Be2 Nbd7 7.Nf3 0-0 8.0-0 Re8 9.Nc3 c6 10.Re1 Rc8 11.d4 Bf8 12.Nh4 ed4 13.Nf5+= dc3 14.Bc3 d5 15.c5 b6 16.Bf3 g6 17.Ng3 bc5=+ 18.bc5 Nc5 19.Qd4 Nfe4?? 20.Qh8# 1–0. Trkn – Prashant, itsyourturn.com, 2000.

6.Ne2 0-0 7.d4 =.

6.Ne2 a6 7.Ng3 Be6 8.Be2 Qd7 9.Nc3 Nc6 10.0-0 e4 (10...0-0!?=) 11.d4 (11.Qc2!?+/-) 11...ed3+= 12.Bd3 0-0 (12...Ne5 13.Nce4=) 13.Qc2 d5? (13...Ne5 14.Nd5 Nd5 15.cd5 Bd5 16.Bh7 Kh8+/-) 14.Rad1 (better is 14.cd5!? Bd5 15.Rad1+- (15.Nd5?! Qd5 16.Bf6 Bf6 17.Bh7 Kh8+-)) 14...d4+/- 15.Be2 (better is 15.Nce2 Ne5 16.Nd4 Nd3 17.Rd3+-) 15...b5? (15...Rfd8 16.b5 ab5 17.cb5+/-) 16.ed4 (better is 16.cb5 ab5 17.Nb5+-) 16...Nd4?? (better is 16...Bc4 17.Bc4 bc4+/-) 17.Nb5 (better is 17.Rd4 Qd4 18.Nd5+- (18.cb5?! Qh4=)) 17...Nc2–+ 18.Rd7 Bd7 (18...Nd7?! 19.Nc7 Ra7 20.Ne6 fe6 21.Rc1 Nb4 22.ab4 Bb4 23.Rb1–+) 19.Nc7 Rac8?? (better is 19...Ra7 20.Nd5 Nd5 21.cd5 a5–+) 20.Na6–/+ g6 (better is 20...Ra8!? 21.c5 Rfc8=+) 21.Rc1= Bf5?? (better is 21...Ba4!? 22.Bd3 Na3 23.Ba3 Rfd8+=) 22.f3 (better is 22.Nf5 gf5 23.Rc2+-) 22...Ra8 23.b5 (23.Nf5 gf5 24.c5+/-) 23...Na3 (better is 23...Ra6 24.ba6 Bc5 25.Kh1 Nd4 26.Bd4 Bd4 27.Nf5 gf5+=) 24.Ba3?? (better is 24.c5 Nb5 25.Nf5 gf5 26.Bb5+/-) 24...Ba3–+ 25.Ra1 Rfe8?? (25...Bc5 26.Kf1 Bc8 27.f4–+) 26.Kf2?? (26.Ra3 Bc8 27.Bd3+/-) 26...Kg7?? (better is 26...Bc5! 27.Nc5 Ra1 28.Nf5 gf5–+) 27.Ra3 (27.Nf5 gf5 28.Ra3 Nd7+-) 27...Nh5? (better is 27...Bc8+-) 28.Nf5 gf5 29.g3 Re6 (29...Nf6 30.c5 Nd7 31.Rd3+-) 30.f4 (better is 30.c5 Rd8 31.c6+-) 30...Nf6 31.Re3 (31.Bd3 Ne4 32.Be4 fe4+-) 31...Re3 (31...Rea6 32.ba6 Ra6+-) 32.Ke3 Kg6 (32...Re8 33.Kd3 Ne4 34.b6 Nf2 35.Kd2 Ne4 36.Kc2+-) 33.Kf3 (better is 33.c5 Nd5 34.Kf2+-) 33...Nh5?? (33...Nd7 34.Bd3 Nb8 35.Nc7+-) 34.Bd3 (better is 34.c5 Ng7 35.b6 Ne6+-) 34...Nf6 35.h3 (35.c5 Rd8 36.Be2 Rd2+-) 35...h5 (35...Rd8 36.Nb4 h5 37.b6+-) 36.g4 (better is 36.c5 Rd8 37.Be2+-) 36...Rc8?? (better is 36...hg4 37.hg4 Ng4+-) 37.gh5 (better is 37.Bf5 Kg7 38.Bc8+-) 37...Nh5 38.h4 (better is 38.b6 Rd8 39.Be2 Rd7+-) 38...Rd8 39.Ke3 (39.Be2 Rd2 40.c5 Nf4 41.Kf4 Re2 42.c6 Rf2 43.Ke5 f6 44.Kd4 Rd2 45.Kc3+-) 39...Re8 40.Kd2 Rd8 41.Kc3 (41.c5!? Nf4 42.Nb4 Nd3 43.Nd3 Kf6+-) 41...Nf4+/- 42.b6?? (better is 42.Nb4 Rb8 43.Nc6+-) 42...Rd3–/+ (42...Nd3?! 43.b7=) 43.Kb4 Re3 (43...Rd1 44.c5 Rb1 45.Kc4 Ne6 46.h5 Kh5–+) 44.b7 Re2 (better is 44...Nd3 45.Kb5 Re1=) 45.c5?? (45.Ka3 Re8 46.c5=) 45...Rb2–+ 46.Kc3 (46.Ka5 Rb7 47.Nb4–+) 46...Rc2 (better is 46...Rb7 47.Nb4 Ne6–+) 47.Kb3 (47.Kc2!? Ne6+-) 47...Ne2 (47...Rc1 48.Ka2+-) 48.Ka3 (better is 48.Kc2 Nd4 49.Kc3 Ne2 50.Kd2+-) 48...Rc1 (48...Nc1 49.Nb4 Rc3 50.Ka4 Rc5+-) 49.Ka2 (better is 49.b8Q Ra1 50.Kb2 Ra6 51.Qg8 Kh6 52.Qg5 Kh7 53.Qf5 Kg7 54.Qg4 Rg6 55.Qe2+-) 49...Ra1?? (better is 49...Nc3 50.Ka3 Ra1 51.Kb4 Rb1 52.Kc3 Rb7=+) 50.Kb2 (better is 50.Ka1 Nf4 51.b8Q+-) 50...Nc3 (51.Ka1 f4+-; 50...Ra6 51.b8Q Re6+-). Slavisa2 – CharlieChess, Live Game Caissa's Web, 2004.

6.Nf3 Nc6 7.d3 Qd7 8.Nc3 0-0 9.e4 Bg4 10.Be2 Nd4 (better is 10...a5!? 11.b5 Bf3 12.Bf3 Nd4=) 11.Nd4+/- ed4 12.Nd5 (better is 12.Bg4!? Ng4 13.Nd5+/-) 12...Be2= 13.Qe2 Nd5 14.cd5 c5 (14...Bf6!?+=) 15.dc6!+/- bc6 (15...bc6 16.Bd4 Combination; 15...Qc6 16.Bd4 Combination) 16.Bd4 c5 17.bc5 dc5 18.Be3 Rfe8 19.0-0 Rad8 20.Rfd1 Qb5 21.Qc2 Rd7 22.Rab1 Qa5 23.a4 Red8 24.Rb5 (24.h3 Qa6+/-) 24...Qc7 (better is 24...Rd3! 25.Rdb1 Qc7=) 25.Rb3 (25.Bc5 a6 26.Rb3 Qc5–+ (26...Bc5?! 27.Rc3 Bf2 28.Kf2 Qh2 29.Rc6+=)) 25...c4 (better is 25...Qc6!? 26.Qc4 Qg6+/-) 26.Rc3+- Qd6 27.Rc4 Qe5 28.d4 Qh5 29.d5 Rd5?? (better is 29...f5+-) 30.ed5 Bf6 31.g3 Qh3 32.d6 Rd6 (32...g6+-) 33.Rc8 (33.Rc8 Qc8 34.Qc8 Rd8 35.Rd8 Bd8 36.Qd8) 1–0. Fournier,Frederic – Guest, Partie amicale, 2m + 0s, 2008.

6.Nf3 Nbd7 7.d3 0-0 8.Be2= c6 9.0-0 Qc7 10.Nbd2 a5 11.b5 c5 12.Nh4 Bg6 13.Ng6+= hg6 14.Bf3+/- Rab8 15.Rc1 Nh7 16.Bd5 Ndf6 17.Bf3 Ng5 18.Be2+/- Ne6 19.Bc3 Rfd8 20.Nf3 b6 21.a4 Nh7 22.Qb3 Rf8 23.Qb2 Rbd8 24.Nd2 Bf6 25.Ne4 Neg5 26.Nf6 Nf6 27.f4+- ef4 28.ef4 Ngh7 29.f5 gf5 30.Rf5 Qe7 31.Rf3 d5 32.cd5 Rd5+= 33.Rcf1 Rg5 34.Bd1 Re8 35.h3 Rg6 36.Re1 Qd7 37.Re8 Qe8 38.Qf2 Qe7 39.g4 Ne4?? 40.Qb2 Nc3–/+ 41.Qc3 ½–½. Bartle,Georg – Zimmermann,Bernd, Baden–ch HT1, 2003.

6.Nf3 Nbd7 7.d3 a5 8.Be2 =.

6.Nf3 Nbd7 7.d3 Bg6 8.Be2 c6 9.Nbd2 Qc7 10.0-0 b6 11.Nh4 0-0 12.Ng6 fg6 13.Qc2 Rf7 14.f4 Raf8 15.Rf2 ef4 16.Rf4 Ne8 17.Rf7 Rf7 18.Rf1 Rf1 19.Nf1 Ndf6 20.e4 Qd7 21.h3 Nc7 22.Ne3 Ne6 23.Ng4 Nf4 24.Nf6 Bf6 25.Bg4 Qe7 26.g3 (better is 26.d4+=) 26...Nd3?? (better is 26...Bb2 27.gf4 Qf6= (worse is 27...Ba3 28.Qc3+/-)) 27.Bf6+- Qf6? (better is 27...Qe4 28.Bc3 d5 29.cd5 cd5+-) 28.Qd3 Qa1 29.Kf2 1–0. Fournier,Frederic (1920) – elcopeton (1855), Active (5/0), 2004.

6.h3 0-0 7.Nc3 Nbd7 8.Nf3 a6 9.d4 Re8 10.Nh4 Be6 11.d5+- Nd5 12.cd5 Bd5 13.Nd5 Bh4 14.Bc4 Nf6? 15.Nf6+- Qf6 16.0-0 c6 17.f4 d5 18.fe5 Qe5?? 19.Be5 (19…Re5 20.Qf3+-) 1–0. rustic – matocc, Live Game Caissa's Web, 2005.

6.h3 Nbd7 7.Nc3 0-0 8.Nf3 c6 9.d4 ed4 10.Nd4= Bg6 11.Bd3 Ne5 12.Bg6 Ng6 13.0-0+= d5. thedesertfox (1900) – bishopbriggs (2245), net–chess.com, 2004.

7.Nc3 h6 8.d4 Nbd7 (8...a5 9.b5 Nbd7 10.Be2=) 9.Be2 ed4 (9...a5 10.0-0=) 10.Nd4+= Be6 11.f4 Nb6 12.Ne6 fe6 13.Qb3 d5 (13...a5 14.0-0+=) 14.c5 Nbd7 15.Nb5 c6 (15...Ne4 16.Nd4 Bc5 17.Ne6 Qh4 18.Kd1 Nf2 19.Kd2 Nh1 20.Rh1+/-) 16.Nd4+/- a6? (better 16...Kf7+/-) 17.Ne6+- Qc8 18.Nf8 Qf8 19.Bd3 Qe8 20.0-0 (20.Bf5 b6 21.cb6 Nb6+-) 20...Ng4? (better 20...Bc5 21.Rae1 Bb6+-) 21.e4 Ndf6 (21...Qf7 22.Bd4 Nf8 23.Qc3+-) 22.e5 Nd7 23.Bc2 Kh8 (23...Nc5 24.Qg3 (worse 24.bc5 Bc5 25.Kh1 Nf2 26.Rf2 Bf2+-) 24...Nh2 25.Qh2+- (25.bc5?! Nf1 26.Kf1 Bc5+-)) 24.h3 (24.Qh3 Ngf6 25.ef6 Bf6+-) 24...Nge5 (24...Nc5 25.Qg3 a5 26.Qg4+-) 25.fe5 Bg5 (25...Qg8 26.Bf5 Nf8 27.e6+-) 26.Qd3 Qg8 27.Rf7 Rd8 (27...Nf8 28.Rb7 a5 29.Rc7+-) 28.e6 Nf6 (28...Nf8 29.e7 Be7 30.Re7+-) 29.Qg6 (29.e7 Rd7 30.Bf6 Be3 31.Qe3 Qf7 32.e8Q Qe8 33.Qe8) 29...d4 30.e7 Be3 31.Kh1 Re8 32.Rf1 Nd7 33.Rf8 (33.Rg7 Qg7 34.Qe8 Qg8 35.Qg8 Kg8 36.e8Q Kg7 37.Rf7) 33...Rf8 34.ef8Q Nf8 35.Rf8! (35.Rf8 Qf8 36.Qh7) 1-0. pereira - vision1959, internet, 2021.

7.d3 Nbd7 8.Be2 c6 9.Nbd2 h6 10.0-0 Nh7 11.Qb3 Be6 12.Qc2 Ndf6 13.d4 Qc7 (better is 13...ed4!? 14.Nd4 a5+/-) 14.de5+- de5 15.Be5 Qd7 16.Rfd1 Rad8 17.Ne4 Qc8 18.Nf6 Nf6 19.Rd8 Rd8 20.Rd1 Rd1 21.Qd1 Ng4 22.Bb2 g5 (22...c5!? 23.bc5 Nf6+/-) 23.Nd4 Nf6 24.Ne6 Qe6 25.Qd4 Ne4?? (better is 25...Qe4+-) 26.Qg7 1–0. Fournier,Frederic (1630) – krimo85@chesscube.com (1855), Active chesscube.com, 2011.

7.d3 Nbd7 8.Be2 h6 9.Nc3 c6 10.0-0 Bg6 11.Qd2 e4 (11...a5!?=) 12.de4+= Ne4 13.Ne4 Be4 14.Rad1 Nf6 15.Qc3 Bf3 16.Bf3 Qc8 17.Rfe1 Qf5 18.e4 Qg6 19.e5 de5 20.Qe5 Rfe8 21.Qc7 (21.Qc7 Bf8 22.Qb7 Re1 23.Re1+-) 1–0. Fournier,Frederic (1875) – jumper40 (1720), Active, 2011.

7.d3 h6 8.e4 Bg4 9.Be2 Nh7 10.Nbd2 f5 11.ef5 Bf5 12.0-0 Ng5 13.Ng5 Bg5 (worse is 13...hg5 14.d4+/-) 14.Nf3 Nd7 15.Ng5 Qg5 16.Bf3 e4 (better is 16...c6!?=) 17.de4 Be6 18.Rc1 Ne5 19.Be2 (19.Be5!? de5 20.Qe2+=) 19...Bh3= 20.g3 Bf1 21.Qf1 (21.Qd5!? Nf7 22.Rf1=) 21...Nf3 22.Bf3 Rf3 23.c5 Raf8 24.Rc2 d5 25.ed5 Qd5 26.Qe2 (better is 26.Re2!?–/+) 26...Rd3–+ 27.h4?? (better is 27.Bc3 Rff3 28.Qe8 Kh7 29.Be1–+) 27...Rd1 28.Kh2 Qh1 0–1. Fournier,Frederic – tzadik, Active, 2009.

7.Be2 a5 8.b5 Nbd7 9.Nc3 Re8 10.0-0 c6 11.d4 cb5 12.Nb5 Bf8 13.Rc1 Bg4 14.h3 Bh5 15.Re1 ed4 16.Nfd4 Be2 17.Ne2 Attacking the isolated pawn on d6 17...Ra6 18.Nf4 Rb6 19.Bc3 Rc6 20.Bd4 Ne5 21.Qb3 Nfd7 22.Nd5 Nc5 23.Bc5 Rc5 24.Rc3 Qg5 25.e4 Nc4 26.Rc4 Rd5 27.Nc7 b5 28.Rc6 (worse is 28.Nd5 bc4 29.Qc4 Qh4+/-; 28.Ne8 bc4 29.Qc4 Re5–+) 28...Rde5 29.Ne8 Re8 30.Rc7 Qh5 31.g4 a4 32.Qf3 Qg6 33.Re3 Re5 34.Rb7 Qe6 35.Qe2 Qe8 36.f4 Rc5 37.Qd3 Qc6 38.Rb8 d5 39.ed5 Rd5 40.Qe4 Rd1 41.Kf2 Qd6 42.Rb5 Rd4 43.Qe5 Rf4 44.Kg3 Rc4 45.Rb8 Qd7 46.Qe8?? (better is 46.Qe7! Qe7 47.Re7 Rc3 48.Kf2+-) 46...Qd6= 47.Kf3?? (better is 47.Kg2 Rc2 48.Kf3 Qd1 49.Re2 Qf1 50.Kg3 Rc3 51.Re3 Qg1 52.Kf3 Qd1 53.Kf2 Rc2 54.Re2 Re2 55.Qe2=) 47...Qf4–+ 48.Ke2 Qh2 49.Kf1 Rc1 50.Re1 Qf4 (50...Qh3?! 51.Kf2 Rc2 52.Re2 Re2 53.Ke2 Qg4 54.Kf2 Qf4 55.Kg2 Qd2 56.Kf3 Qd5 57.Qe4–+) 51.Kg2 Rc2 52.Re2 Re2 53.Qe2 Qb8 0–1. combijack (1755) – simonfox (1815), gameknot.com, 2012.

7.Be2 a6 8.0-0 Nbd7 9.d3 Bg6 10.Nbd2 e4 11.de4 Ne4 12.Ne4 Be4 13.Bd3 Bd3 14.Qd3 Bf6 15.Bf6 Nf6 16.Rfd1 Re8 17.Rd2 Qe7 18.Rad1 Ne4 19.Re2 Qf6 20.Qd4 (20.Nd4 a5=) 20...Qd4 (20...Nc3 21.Ree1 Nd1 22.Qf6 gf6 23.Rd1–/+) 21.Rd4 (worse is 21.Nd4 Nc3 22.Red2 Nd1 23.Rd1 Re5–/+; 21.ed4?! Nc3 22.Re8 Re8=) 21...f5 22.Nd2 Nd2 23.Red2 Re4 24.R2d3 Rae8 25.Re4 fe4 26.Rd4 Kf7 27.Kf1 Kf6 28.g3 g5 29.Kg2 h5 30.h3 Re6 31.g4 h4 32.f3 ef3 33.Kf3 c6 34.Re4 Re5 35.a4 b6 36.Re5 Ke5 37.a5?? (better is 37.Ke2–+) 37...b5 38.cb5 cb5 39.Kf2 Kd5 40.Ke2 Kc4 41.e4 Kb4 42.Kd3 Ka5 0–1. Fournier,Frederic (1960) – vicen6 (1845), Active (5/0), 2004.

7.Be2 Nbd7 8.Nc3 c6 9.0-0 Qb6 10.d3 a6 11.Rc1 e4 (11...c5!?=) 12.de4 (12.Nh4 Be6 13.de4 a5+/-) 12...Ne4+= 13.Nd4 Nc3 14.Bc3 Bg6 15.a4 (15.Bh5 Ne5 16.Bg6 hg6+=) 15...Qc7 (15...c5 16.Nc2=) 16.f4+= d5? (better 16...h6+=) 17.f5+- Bd6 (17...Qe5 18.Qd2 Bd6 19.g3+- (19.fg6?? Qh2 20.Kf2 Bg3 21.Kf3 Ne5)) 18.fg6 Bh2 19.Kh1 Qg3 (19...hg6 20.cd5 c5+-) 20.Nf3 (20.gh7 Kh7 21.Bd3 g6 22.Qh5 Kg8 23.Nc6 d4 (23...gh5?? 24.Ne7) 24.Ne7 Kg7 25.Bd4 Ne5 26.Bg6 Qg6 27.Ng6 f6 28.Nf8 Rf8 29.Be5 Bf4 30.Rf4 Rf7 31.Bd6 f5 32.Qg5 Kh8 33.Be5 Kh7 34.Rh4) 20...fg6 (20...Qg6 21.Nh2 Nb6 22.Rf4+-) 21.Nh2 (better 21.cd5 c5 22.bc5 Nc5 23.Be5+-) 21...Rf3 (21...Rf1 22.Bf1 Nf6 23.cd5 Nd5 24.Bc4+-) 22.Ng4 (better 22.Bf3 Nf6 23.cd5+-) 22...Qh4 23.Kg1 c5 (23...Rf1 24.Bf1 h5 25.Qd4+-) 24.Nf6! Qf6 (24...Nf6 25.Bf3 Zwischenzug; 24...Rf6 25.Qd5 Double attack; 24...gf6 25.Qd5 Double attack (25.Bf3 Zwischenzug)) 25.Qd5 (25.gf3?! Qg5 26.Kh1 Qh4 27.Kg2 Qg5 28.Kh3 Qh5 29.Kg3 Qg5 30.Kh2 Qh4 31.Kg1 Qg3 32.Kh1 Qh4 33.Kg1 Qg3 34.Kh1 Qh4=) 25...Kh8 (25...Qf7 26.Bf3 Re8+-) 26.Qf7 (26.Bf6 Rf1 27.Rf1 Nf6 28.Qb7 Re8 29.bc5 Rg8+-) 26...h5?? (better 26...Qf7 27.Rf3 Qe7 28.bc5 Nc5-+) 27.Qe7 (better 27.Bf6 Rf6 28.Qd7 cb4 29.Qb7+-) 27…cb4 1-0. Williams,Barry - James,Simon, NZL South Island Rapid Blenheim round, 1999.

7.Be2 Nbd7 8.d3 e4 9.de4+= Be4 10.Nbd2 Bf5 11.0-0 a5 12.Nd4 Bg6 13.Bf3 Qc8 14.Bc3 ab4 15.ab4 Ne5 16.Be2 h6 (16...Ra1 17.Qa1 Re8 18.Rd1=) 17.N2f3 Ne4 18.Bb2 Bf6 19.Ne5 de5 20.Nb5 (20.Ra8 Qa8 21.Nf3 Rd8=) 20...c6 21.Nc3 Rd8 22.Ra8 Qa8 23.Qa1 (23.Qc1!?=) 23...Qa1+= 24.Ra1? (better is 24.Ba1 Nd2 25.Re1+=) 24...Rd2–+ 25.Ne4? (better is 25.Bf3 Nf2 26.Ra8 Kh7 27.Ba1–+) 25...Be4 (25...Rb2?! 26.Nf6 gf6 27.Kf1 Rb4 28.f4–/+; 25...Re2?! 26.Nf6 gf6 27.Ba3+=) 26.Be5 Be5 (26...Re2?! 27.Bf6 gf6 28.c5–+) 27.Kf1 Ba1 0–1. Krc,Milan (1880) – Pribila,Gerhart (2030), SVK–ch op–A Banska Stiavnica, 2007.

7.Be2 Nbd7 8.d4 ed4 9.Nd4 Bg6 10.Bf3 (10.Nc3 Rc8=) 10...Ne5 (better is 10...c5 11.Ne2 h6=) 11.Bb7?? (better is 11.Be2=) 11...Nd3–+ 12.Ke2 Nb2 13.Qb3 Nd3 14.Nc6 Qd7 15.Ba8 (15.Rd1 Nf2! 16.Kf2 Ng4 17.Kg1–+) 15...Ra8 16.Ne7 Qe7 17.Rd1 (17.h3 Nf4 18.Ke1–+) 17...Ne5 (better is 17...Nf2 18.Kf2 Ng4 19.Ke1 Ne3–+) 18.Ke1? (18.Kf1 Nfg4 19.h3 Qh4–+) 18...Qe6 (better is 18...Ne4 19.Ra2 Qh4 20.h3–+) 19.Nd2 (19.Kf1–+) 19...Qg4 (better is 19...Nd3 20.Kf1 Ng4–+) 20.g3 (20.Kf1 Qh4 21.e4 Qh2 22.Qh3 Qh3 23.gh3 Ne4 24.Ne4 Be4 25.Rac1–+) 20...Nd3 21.Kf1 Qh3 22.Ke2 (22.Kg1 Ng4 23.Nf1 Nh2 24.Nd2 Be4 25.f3 Qg3 26.Kh1 Nf2) 22...Qh2 23.Rf1 Qh5 (better is 23...Qg2!? 24.Qd1 Bh5 25.Kd3 Bd1 26.Rad1–+) 24.f3 Qh2 25.Kd1 Qg3 26.e4 Qe5 27.Kc2 Nf4 28.Qe3 d5 29.Kb3 d4 30.Qg1 0–1. Mostajo,Bready – Lopez,Marlon, Pan American–ch U12, 2001. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 Bf5 5.c4 Be7 6.Nf3 0-0)

6.d3 Be6 (6...a5 7.b5+=) 7.Be6= fe6 8.Nf3 h6 (8...Qe8 9.0-0=) 9.Nbd2 (9.0-0 Qe8=) 9...Nbd7 10.0-0 Nb6 (10...Qe8 11.Qe2=) 11.c4 Rf7 (11...Qe8 12.Qc2=) 12.Qc2 Rc8 (12...Qe8 13.d4 ed4 14.ed4+=) 13.d4 ed4 14.ed4 Nh7 (14...Qd7 15.a4+=) 15.Rfe1 Ng5 (15...Nf8 16.a4+=) 16.Ng5 Bg5 17.Re6 (better is 17.Nf3!?+/-) 17...Bd2= 18.Qd2 Nc4 19.Qe2 (19.Qc2 d5=) 19...Nb2 (19...d5 20.Re1=) 20.Qb2 Qh4 (20...Qg5 21.Rae1=) 21.Rae1+= Rcf8 22.R1e2 Qg4 (22...d5 23.b5+=) 23.h3 Qg5 24.R6e3 (24.a4 Qd5 25.Re7 c6=) 24...Kh8 (better is 24...Rf2! 25.Qb3 R2f7–/+) 25.Rg3 (25.Re4 c6=) 25...Qf6 (25...Qd5 26.Qc3=) 26.Rf3 Qg6 27.Rg3 Qf5 28.Rf3 Qd7 29.Rf7 Rf7 30.Qc2 Re7 31.Re7 Qe7 32.Qc3 c6 33.Qe3 Qe3 34.fe3 Kg8 35.Kf2 Kf7 36.Kf3 b6 37.g4 g5 38.e4 Ke6 39.Ke2 c5 40.Kd3 cd4 41.Kd4 b5 42.Kd3 Ke5 43.Ke3 d5 44.ed5 Kd5 45.Kd3 a6 46.a4 ba4 47.Kc3 Ke4 48.Kb2–/+ Kd5 49.Ka3 Kc6 50.Ka4 Kb6 51.Ka3 Kc6 52.Ka4 Kd5 53.Ka5 Kc4 54.Ka4 Kd4 55.Ka5?? Kc3–+ 56.Ka4 Kb2 57.b5 ab5 58.Kb5 Kc3 59.Kc5 Kd3 60.Kd5 Ke3 61.Ke5 Kf3 62.Kf5 Kg3 63.Ke4 Kh3 64.Kf3 Kh4 65.Kf2 Kg4 66.Kg2 h5 67.Kh2 Kf3 68.Kg1 g4 69.Kf1 g3 70.Kg1 g2 (70...g2 71.Kh2 Kf2 72.Kh3 g1Q 73.Kh4 Qg4) 0–1. Skjoldan,Benjamin – Dragicevic,Drazen, Nordic–ch U20, 2000.

6.d4 Nbd7 7.Ne2 e4 8.d5 Ne5 9.Qd4=+.

6.Ne2 a5 7.0-0 ab4 8.ab4 Ra1 9.Ba1 Nc6 10.b5 Na5 11.Ba2 c6 12.Nbc3 cb5 13.Nb5 Bd7 14.Nbc3 Be6 15.Be6 fe6 16.f4 ef4 17.Nf4 Qd7 18.Nce2 (18.d3 b5=) 18...e5=+ 19.Nd3 Rc8 (19...Nc4 20.Ng3=+) 20.Ng3= g6 21.Nf2 d5? (better 21...Qc6!? 22.Ng4 Rf8=) 22.Be5+/- Nc4 23.Bd4 Qe6 24.Kh1 Rf8 25.Nh3 Ng4 26.Nf4 Qd7 27.h3 (27.Qe2 g5 28.Nd5 Qd5 29.Qg4 Nd2+-) 27...Nf6 (27...Bh4 28.hg4 (28.Qg4?! Qg4 29.hg4 Bg3=) 28...Bg3 29.d3+/-) 28.d3 Nd6? (28...Na3 29.c3 Nb5 30.Be5+/-) 29.Qf3 (29.Bf6 Bf6 30.Nd5 Be5 31.Rf8 Kf8 32.Qf3 Nf7+-) 29...Nb5 (better 29...Nde8!?+-) 30.Bf6 Bf6?? (30...Rf6 31.Qd5 Qd5 32.Nd5 Rf1 33.Nf1+-) 31.Qd5 (better 31.Nd5 Qg7 32.Nf6 Kh8 33.Nge4+-) 31...Qd5 32.Nd5 Kg7 (32...Be5 33.Rf8 Kf8 34.Ne4+-) 33.Nf6 Rf6 34.Rf6 (34.Rb1 Nd6+-) 34...Kf6 35.Kg1 Na3 36.c3 Nb1 37.Ne2 Ke5 38.Kf2 Nd2 39.Ke1 Nb3 40.Kd1 g5 41.Kc2 Na5 42.c4 Nc6 43.Kc3 h5 (43...Kf6 44.Ng3+-) 44.Ng3 h4 45.d4 Kf6 46.Ne4 Kf5 (46...Kg6 47.d5 Nd8 48.c5+-) 47.Nd6 Ke6 48.Nb7 Kd7 (48...Ne7 49.e4+-) 49.Nc5 Kd6 (49...Ke7 50.Ne4 g4 51.hg4+-) 50.Ne4 (50.Ne4 Kd7 51.Ng5+-) 1-0. FeegLood (2785) - chickencrossroad (2695), Time forfeit, lichess.org, 2016.

6.Ne2 a5 7.f4 Nbd7 8.0-0 ef4 (8...e4!? 9.b5 Nc5=+) 9.Nf4= (worse 9.ef4 d5 10.Bb5 ab4 11.ab4 Ra1 12.Ba1 Bb4-/+) 9...Ne5 10.Bb3 ab4 11.ab4 Ra1 12.Ba1 c6 13.Nc3 Qb6 14.b5 Bg4 15.Qb1 Ng6? (better 15...Qa5!?=) 16.bc6+/- Qc6 17.Nfd5 (17.Ncd5 Re8 18.Nf6 gf6+-) 17...Bd8 (17...Be6!? 18.Ba4 Qa6+/-) 18.Nf6+- Bf6 19.Rf6! gf6 20.Nd5 Ra8? (better 20...Be6 21.Nf6 Kg7 22.Nd7 Ne5 23.Be6 fe6 24.Nf8 Kf8 25.Be5 de5 26.Qb4 Ke8+-) 21.Nf6 (21.Nf6 Kf8 22.Ng4+-) 1-0. FeegLood (2765) - smurf42 (2600), lichess.org, 2015.

6.Ne2 b6 7.0-0 Bb7 8.f4 Nbd7 9.Ng3 c5 10.Nf5 d5? (10...e4 11.bc5 Nc5 12.Nc3=) 11.Ne7 (better 11.fe5!? Ne8 12.Bb3+/- (12.Ne7?! Qe7 13.Bd3 g6+=)) 11...Qe7= 12.Be2 d4 (worse 12...cb4 13.ab4 a6 14.fe5 Ne5 15.Bd4+=) 13.fe5 Ne5 (13...Qe5!? 14.ed4 cd4=) 14.ed4+= cd4 15.Bd4 Rad8 16.Bb2 Rfe8 17.Nc3 (17.Bb5 Nfd7 18.Qh5 Qe6 19.Be5 g6+/-) 17...Ng6 (17...Qd6 18.d3=) 18.Bf3 (18.Bb5 Nd7+/-) 18...Ba6 19.d3 Nh4 (better 19...Ne5!?+=) 20.Bc6+- Bb7 (20...Qe3 21.Kh1 Re6 22.b5+-) 21.Bb7 (better 21.Be8!? Qe3 22.Rf2 Re8 23.Nb5+-) 21...Qb7+/- 22.Qd2 Rc8 (22...Rd4 23.h3+/-) 23.Rf4 (23.Rf6!? gf6 24.Qf2+-) 23...Ng6+/- 24.Rf6! gf6 25.Rf1 Re6 26.Ne4 Re4 27.de4 Qe4 28.Bf6 (28.Bc3!?+/-) 28...Rc2+= 29.Qg5 h6 30.Qg3 h5 31.h4 Qg4 (31...Rd2 32.Kh2+=) 32.Qg4 hg4 33.h5 Nf8 34.Rf4 Nh7 (34...Ne6!? 35.Rg4 Kh7+/-) 35.Rg4+- Kf8 36.Be5 f6? (36...Ke7 37.Kh2+-) 37.Bd6 (37.Bf4!? Ng5+-) 37...Kf7 38.Bf4 (38.Re4 a6+-) 38...Ng5? (better 38...f5 39.Rg3 Nf6+/-) 39.Bg5+- fg5 40.Rg5 Rc1 41.Kh2 Rc3 42.Rg3 Rc4 43.Rf3 Kg7 44.Kh3 Kh6 (44...a5 45.ba5 ba5 46.g4+-) 45.g4 Rc3 (45...Kg7+-) 46.Rc3 (46.Rc3 Kg7 47.Rc7 Kf6 48.h6 Ke6 49.h7 Kd6 50.Ra7 b5 51.h8Q Kd5 52.Qd8 Kc4 53.Rc7 Kb3 54.Qd3 Kb2 55.Rc2 Ka1 56.Qd1) 1-0. FeegLood (2610) - Lance5500 (2535), lichess.org, 2015.

6.Ne2 Nc6 7.0-0 b6 (7...d5 8.Bb3=+) 8.f4 (8.Nbc3 d5 9.Bb3 h6=) 8...Bb7 (8...a6 9.Nbc3=) 9.Nbc3= Qd7 (9...d5 10.Bb3 d4 11.Nb5=) 10.Bb3 (10.Nd5 Bd8+=) 10...Rad8 (10...a5 11.b5 a4 12.Ba4= (worse 12.bc6 Qc6 13.Bf7 Rf7-/+)) 11.Qe1 (11.Nd5 Ba6+=) 11...a5 12.b5 Nb8 (12...a4 13.Ba4 (worse 13.bc6 Qc6 14.Bf7 Rf7-/+) 13...Na5 14.d3+=) 13.a4 (13.Qg3 Nh5 14.Qf2 Nf6+=) 13...Qc8 (13...Qg4 14.Qg3 Qg3 15.Ng3=) 14.Ng3 (better 14.Qh4+=) 14...Rfe8?? (better 14...g6+=) 15.fe5+- de5 16.Nf5 Bf8 17.Qg3 (17.Nh6 gh6 18.Rf6 Qg4+-) 17...g6 (17...Kh8 18.d3 (18.Bf7?! Rd2 19.Nh4 Bc5+/-) 18...Re6 19.Nh4+-) 18.Nh6! Bh6 19.Rf6 Re7 (19...Rf8 20.Raf1 Rd2 21.Rf7 Rg2 22.Qg2 Be3 23.R7f2 Kg7+-) 20.Raf1 Rf8 (20...Rdd7 21.R6f2 c5 22.bc6 Nc6+-) 21.Ne2 (better 21.Ba3 Bg7 22.Be7 Bf6 23.Rf6+-) 21...Bg7+/- 22.Be5 (better 22.R6f2 Nd7 23.d4 ed4 24.Nd4+/-) 22...Nd7=+ 23.Rf7 Ref7 24.Rf7 Rf7 (24...Ne5?? 25.Rc7 Kh8 26.Rc8 Bc8 27.d4+-) 25.Bf7 Kf7 26.Bg7? (better 26.Bc7!? Kg8 27.Nd4=+) 26...Kg7-+ 27.Nd4 (better 27.h4-+) 27...Qe8?? (better 27...Nc5-+) 28.Qc7= Qf7?? (better 28...Ba8=) 29.Qb7+- Ne5 (29...Kh6 30.c4! Kg7 31.Qc7+-) 30.Qf7 (30.Qb6!? Kh6 31.Qd8 Nd7+-) 30...Nf7 (30...Kf7 31.d3+-) 31.d3 (31.Ne6!? Kg8+-) 31...Kf6 32.Ne2 Nd6 (32...Ne5 33.e4+-) 33.Kf2 Nb5 (33...Ne8 34.Nf4 Ke5 35.c4+-) 34.Ke1 (better 34.ab5 a4+-) 34...Nc3 (34...Nd6+-) 35.Kd2 (better 35.Nc3 Ke6 36.e4+-) 35...Na4+/- 36.Nd4 (better 36.c4 Ke6 37.Kc2+-) 36...b5? (better 36...Nc5+/-) 37.Nb5+- Nb6 (37...Nc5 38.e4+-) 38.Nc3 (38.e4 Na4+-) 38...a4 (38...Ke6 39.e4+-) 39.Na2 (39.Kc1 Ke6+-) 39...a3 (39...Ke6 40.c4+-) 40.c4 Na4 (40...Nd7 41.Kc3+-) 41.Kc2 Nb6 (41...Kf7 42.Nb4+-) 42.Kb3 Nc8 43.Ka3 Ne7 44.Kb3 (better 44.c5!? Nd5 45.e4 Ne3+-) 44...Nf5 45.Kc3 (better 45.e4 Ne3 46.c5 Ng2 47.c6+-) 45...Ne3 46.Nc1 (46.Kd4 Ng2 47.c5 Ne1+-) 46...Ng4? (46...Ng2 47.Kd4 Nf4 48.Ke4+-) 47.Kd2 (better 47.h3!? Ne3 48.g3 Ke7+-) 47...Nh2 48.Ne2 (48.d4 Ng4+-) 48...Ng4 (48...Nf1 49.Kc3+/-) 49.c5 (49.d4 Ke7+-) 49...Ne5 (better 49...Ke6+/-) 50.c6?? (better 50.d4 Nf7 51.Kd3+-) 50...Nc6= 51.d4 Ke7 52.Ke3 Kd6 53.d5 (53.Nc3!?=) 53...Ne7 54.Nf4? (better 54.Kf4-/+) 54...Nd5-+ 55.Ke4 Nf4 56.Kf4 Ke6?? (better 56...h6 57.Ke4 Ke6-+) 57.Kg5= Kf7 58.Kh6 Kg8 59.g4 g5 60.Kg5 Kg7 61.Kh5 h6 62.g5 Kh7 63.gh6 Kh8 64.Kg6 Kg8 65.Kg5 Kh8 66.Kh5 Kg8 67.Kg5 Kh8 68.Kh5 Kg8 69.Kh4 Kh8 70.Kg5 Kg8 71.Kf6 Kh8 72.Kg5 Kg8 73.Kh5 Kh8 74.Kg5 ½-½. FeegLood (2770) - Lance5500 (2580), lichess.org, 2016.

6.Ne2 d5 7.Bb3 Bd6 8.0-0 c6 9.f4 Nbd7 10.c4 Re8 11.Nbc3 ef4 12.Nf4 dc4 13.Bc4 Ne5 14.Bb3 Ng6 15.Nce2 Bf4 16.Nf4 Ne4 17.Ng6 hg6 18.Bf7 Kh7 19.Rf4 Rf8 20.Qc2 Bf5 21.d3 Rf7 22.de4 Be6 23.Qc3 Qf8 24.Raf1 Rf4 25.Rf4 Qe7 26.Rh4 Kg8 27.Rf4 Rd8 28.h3 g5 29.Rf1 Rd7 30.Qe5 Bc4 31.Qb8 Rd8 32.Rf2 Rb8 33.Bd4 Rd8 34.e5 Bd5 35.Rf5 g6 36.Rf2 b6 37.Rf6 c5 38.bc5 bc5 39.Bc3 Ba8 40.Rg6 Kh7 41.Rf6 Qb7 42.Rf2 Rf8 43.Re2 Qb1 44.Kh2 Qd3 45.Ra2 Qc3 46.e4 Qe5 47.Kg1 Qe4 48.Rd2 Qe3 49.Kh2 Qd2 50.Kg3 Qg2 Normal 0-1. FeegLood (2660) - MamyanManuk (2205), Rated Bullet tournament DzSs0FEW, lichess.org, 2015.

6.Ne2 d5 7.Bb3 Bd6 8.c4 (8.Nbc3 c6=+) 8...c6 (8...dc4 9.Bc4 a5 10.b5=+) 9.cd5= cd5 10.Nbc3 (10.0-0 Bg4=) 10...Be6 (10...a5 11.Nd5 Nd5 12.Bd5 ab4 13.a4=) 11.Nb5 Nc6 12.Nd6 Qd6 13.Nc3 (13.f4!? Nd7 14.0-0=) 13...a6 (13...d4 14.Nb5 Qd7 15.Be6 fe6 16.ed4 ed4 17.a4–+) 14.Na4 Nd7 (14...Rfe8 15.0-0=+) 15.Rc1 (15.d4 e4=) 15...Rfe8 (15...d4 16.Nc5 Bb3 17.Qb3=) 16.Nc5 (16.d4 ed4 17.Bd4 a5=) 16...Nc5 17.bc5 (worse 17.Rc5 a5 18.Ba4 ab4 19.Bc6 ba3 20.Be8 ab2–/+) 17...Qd7 (17...Qc7 18.0-0=) 18.0-0 d4 19.Be6 Re6 20.Qg4 (20.Qb3 Rb8=) 20...Qd5 (20...de3 21.de3 Rd8=) 21.e4 (better 21.Rfe1!?=) 21...Qb3–/+ 22.Rb1 Qc2 23.Ba1 (23.f4 Qe4 (23...Qd2 24.Bc1 Qc3 25.f5+-) 24.Ba1 Re7–/+) 23...Rb8 24.Rfc1 (24.Qe2 Qc5 25.Qd3 b5–/+) 24...Qd2–+ 25.Qd1 Qf4 (25...Qd1 26.Rd1 Re7 27.Kf1–+) 26.Qd3 Rh6 (26...b5 27.cb6 Rb6 28.Qc4 Rb1 29.Rb1–/+) 27.h3 (27.g3 Qg4 28.f3 Qh5–/+) 27...g5 (27...f5 28.Re1 Rf6–/+) 28.g3 (better 28.Bb2!?–/+) 28...Rh3–+ 29.gf4 (better 29.Qe2 Qf6 30.Rb6–+) 29...Rd3 30.fe5 (30.fg5 Ra3 31.Kg2 Kg7–+) 30...Ne5 (better 30...Ra3!? 31.Kf1–+) 31.c6 b5 (31...Nf3 32.Kg2 b5 33.Rb4 Ra3 34.Bd4–+) 32.c7 (32.a4 Rc8 33.ab5 ab5–/+) 32...Rc8 33.a4 Nc4?? (33...Nf3 34.Kg2 A) 34...ba4?? 35.Rb8 Rb8 36.cb8Q (36.cb8R?! Kg7=) 36...Kg7 37.Rc6 Nh4 38.Kf1+-; B) 34...Nd2–+) 34.ab5 Na3?? (34...ab5 35.Rc4! Kf8 36.Rb5 Rd1 37.Kg2 Ra1+-) 35.b6 Nb1 (35...Kg7 36.b7 Rc7 37.b8Q Rc1 38.Rc1+-) 36.b7 Rc7 37.b8Q Kg7 38.Qc7 (38.Qc7 Nc3 39.Bc3 Rc3 40.Rc3 dc3 41.Qc3 f6 42.Qc7 Kg6 43.Qd8+-) 1–0. Amendola,M – Garofalo,Antonio, Primavera, 1997.

6.Ne2 d5 7.Bb3 Bd6 8.f4 ef4 9.Nf4 (9.0-0 fe3 10.Bf6 gf6-/+) 9...Bf4-/+ 10.ef4 Re8 11.Kf1 Ne4 (11...Bg4 12.Qc1-+) 12.d3 Qh4?? (better 12...Nf6-/+) 13.de4+- Qf4 14.Qf3 Qf3 15.gf3 Bh3 (15...de4 16.Rg1 g6 17.fe4 Re4 18.Nc3 Rf4 19.Kg2 Rg4 20.Kf2 Rg1 21.Rg1+-) 16.Kf2 de4 17.Rg1 (17.fe4 Nd7+-) 17...e3 18.Ke2 g6 19.Nc3 Nc6 (19...Nd7 20.Nb5 Rec8 21.Rad1+-) 20.Nd5 Rad8 (20...Red8 21.Ke3 Kf8 22.Nc7+-) 21.Nf6 (21.Nf6 Kf8 22.Nh7 Kg8 23.Nf6 Kf8 24.Ne8 Re8 25.Rad1+-) 1-0. FeegLood (2730) - smurf42 (2600), lichess.org, 2015.

6.Ne2 Be6 7.Be6 fe6 8.0-0 Kh8 9.d3 Qe8 10.Nd2 Nbd7 11.Ng3 Rf7 (11...Qg6 12.Nf3=) 12.Qe2 Nf8 13.c4 Ng6 14.Kh1 (14.f4 ef4 15.ef4 d5+=) 14...Qd7 15.Nde4 Raf8?? (better 15...Ne4 16.Ne4 d5=) 16.Ng5+- h6 (16...d5 17.f4 ef4 18.ef4+-) 17.Nf7 Rf7 18.Rad1 (18.f4 ef4 19.ef4 c5+-) 18...Kh7 19.Qc2 Kg8? (better 19...d5+-) 20.d4 Nh4 21.de5 Ng4 22.h3 (22.h3 Qc6 23.e4 Ne5 24.Be5 de5 25.Rd3+-) 1-0. FeegLood (2625) - Lance5500 (2520), lichess.org, 2015.

6.Ne2 Bg4 7.h3 (7.f3 Bd7=) 7...Bh5=+ 8.0-0 d5 9.Bb3 Nbd7 (9...Bd6 10.g4 Bg6 11.f4 ef4 12.Nf4 Bf4 13.ef4=) 10.Qe1 (10.g4!? Bg6 11.f4 ef4 12.ef4=) 10...c6 11.f4 Be2 12.Qe2 ef4 13.Rf4 Bd6 14.Rf5 Re8 15.c4 Be5 (15...Qc7 16.cd5 Ne4 17.Qf3 Bh2 18.Kh1 Ng3 19.Kh2 Nf5 20.Kg1=) 16.d4+= Bd6 17.Nc3 (17.cd5 Nd5 18.Bd5 cd5+=) 17...g6 (17...Qe7!? 18.cd5 Qe3 19.Qe3 Re3 20.dc6 bc6+=) 18.Rf3+/- Ne4? (18...dc4 19.Qc4 Kh8+-) 19.cd5+- Ng3? (better 19...Ng5 20.Rff1 cd5 21.Bd5 Rb8+-) 20.Qf2 Nf5 21.dc6 bc6 22.e4 Nh4 (22...Nh6 23.Bc1 (23.Bf7?! Nf7 24.Rf7 a5+-) 23...Kg7 24.Bh6 Kh6 25.Rf7+-) 23.Rf7 (23.Rf7 Kh8 24.g3+-; worse 23.Bf7 Kg7 24.Be8 Nf3 25.Qf3 Qe8+-) 1-0. FeegLood (2580) - Shinsei (2425), lichess.org, 2016.

6.h4 Nc6 7.h5 a6 8.Nf3 b5 9.Bb3 a5 10.Qe2 ab4 11.ab4 Ra1 12.Ba1 Na7? (12...Nb4 13.Qb5) 13.h6 g6 14.Nc3 Ng4 15.Nb5 Nb5 16.Qb5 Bd7 17.Qa5 e4 18.Nd4 Bg5 19.Bd5 Qf6? (19...c5 20.Nb3) 20.Nf3 Rc8 21.Bf6 1–0. Wall,Bill – Guest2901059, playchess.com, 2012.

6.ed4 0-0 =+.

6.Qd4 0-0 7.Nf3 Nc6 8.Qf4 Nd5 9.Qe4 Nb6 10.b5 d5 11.Qd3 Bf6 12.Bf6 (worse is 12.bc6 Bb2 13.Ra2 Bf6 14.cb7 Bb7–/+) 12...Qf6 13.Qc3 d4 14.Nd4 (worse is 14.ed4 Re8 15.Be2 Nd5–/+) 14...Nd4 15.Qd4 (worse is 15.ed4 Re8 16.Be2 Bg4–/+) 15...Qg6 16.Nd2 Bf5 17.Rc1 Rad8 18.Qf4 Rfe8 19.Nf3 (19.Qc7 Qg5 20.Qc5+= (worse is 20.Qb7 Re3 21.fe3 Qe3 22.Be2 Qd2 23.Kf2 Qd4 24.Ke1 Re8–/+)) 19...Nd5= 20.Qg5 Qb6 21.Bc4 (21.Qf5?? Ne3 22.Qd3 Qa5 23.Ke2 Ng2 24.Ne5 Rd3 25.Kd3 Qa3 26.Kd2 Qb4 27.c3 Qf4 28.Kc2 Re5–+) 21...Ne3 22.fe3 h6 23.Bf7 Kh8 24.Qf4 Re3 (24...Re4!? 25.Qf5 Qe3 26.Kf1 Qe2 27.Kg1 Qe3 28.Kf1 Qe2 29.Kg1 Qe3 30.Kf1=) 25.Kf1+/- Bc2 26.Ne1 Rd6 27.Rc2 Rf6 28.g3 Qb5 29.Kf2 Rf4 30.gf4 Qb6 31.Kg2 Qd4 32.Rf2 Qd7 33.Rhf1 Qf7 34.Rf3 Re2 35.Kg1 Qa2 36.Rg3 c5 37.Ng2 c4 38.f5 Qd2 39.Nf4 Qd4 40.Kh1 Rf2 41.Rf3 Rf1 (41...Rf1 42.Rf1 c3–+) 0–1. Ottenweller,Wolfgang (1990) – Speisser,Patrick (2105), IECG, 2006.

6.Qd4 0-0 7.Nf3 Ne8 8.Qd1 Bf6 9.Nc3 Bg4 10.Bd3 Nc6 11.h3 Bf3 12.Qf3 Ne5 13.Qe2 Nd3 14.Qd3 g6 15.0-0 Bg7 16.Rab1 Nf6 17.Ne2 Re8 18.Nf4 Ne4 19.Bg7 Kg7 20.Nd5 c6 21.Qd4 f6 22.Nc3 Nc3 23.Qc3 d5 24.Rfd1 Qe7 25.Qd4 a6 26.c4 dc4 27.Qc4 Rad8 28.Qc5 Qe6 29.Rd4 Rd4 30.Qd4 Re7 31.Rd1 Qa2 32.Rd3 Qe6 33.g3 (33.f3 Kf7=) 33...Kf7 (33...Qh3!? 34.Qd6 Kf7=+) 34.h4 Qc8 35.Kg2 Qe6 36.Qd6 Qd6 37.Rd6 Rc7 38.Kf3 Ke7 39.Rd4 c5 40.bc5 Rc5 41.g4 b5 42.Kf4 a5 43.e4 Rc4?? (43...h5 44.gh5 Rh5 45.Kg4=) 44.Rd5?? White plans g5 (better 44.Rc4 bc4 45.Ke3+-) 44...Ra4 45.Rb5 Ra3 46.Rb7 Ke6 47.Rb6 Kf7 48.g5 fg5 49.hg5 Ra2 50.Rb7 Ke6 51.Rb6 Kd7 52.f3 a4 53.Rb7 Kc6 54.Rh7 a3 55.Rg7 Kb5 (55...Rb2 56.Rg6 Kb7 57.Rg7 Ka6 58.Rg8=) 56.Rg6 Rf2? (56...Rb2 57.Rg8 Kb4 58.g6+-) 57.Rg8+= a2?? (better 57...Kb4+=) 58.Ra8+- Rb2 59.g6 Kc6 (59...Rg2 60.g7!+-) 60.g7 (better 60.Kg3 Rb7 61.Ra2 Kd6+-) 60...Kb7 (60...Rg2+-) 61.Ra2! (61.Ra2 Ra2 62.g8Q+-) 1-0. ZePequeno (2295) - oneminuteisshort (2180), Rated Bullet game, lichess.org, 2016.

6.Qd4 Nc6 7.Qd1 0-0 8.Nd2 Bf5 9.Ngf3= a6 10.Bd3 Bd3 11.cd3 Nd7 12.0-0 Bf6 13.Bf6 Nf6 14.Ng5 h6 15.Nge4 Ne4 16.Ne4 d5 17.Ng3 Ne5 18.f4 Nd7 19.e4 de4 20.de4+= Nb6 21.Qe2 Qd4+= 22.Kh1 Rad8 23.Rac1 c6 24.Nf5 Qd7 25.Qg4 f6 26.Nh6 Kh7 27.Nf5 g6?? 28.Rc3 Qe8 29.Rh3 Kg8 30.Rh6 Kf7 31.Rh7 Kg8 32.Rg7 (32…Kh8 33.Qh4) 1–0. Apocalypse – jiikoo, internet, 2005.

6.Qd4 Nc6 7.Qf4 0-0 8.Bd3= Ne5 9.Nd2 Nd3 10.cd3 Nd5 11.Qf3 Bf6 12.Bf6= Nf6 13.Ne2 a5 14.b5 c6 15.bc6 Bg4 16.Qf4 bc6 17.Ng3 d5 18.0-0 Rb8 19.Rab1 Rb1 20.Rb1+= Qe7 21.h3 Bd7 22.Qa4 Qc5 23.Nf3 Qc3 24.Qb3 Qb3 25.Rb3 c5 26.Ne5 Rc8 27.Rb7 c4?? 28.Nd7+- cd3 29.Nf6 gf6 30.Kh2?? d2= 31.Rb1 Rc1 32.Rb8 Kg7 33.Nf5 Kg6 34.Ne7 Kh6 35.g4 f5 36.Rg8 (36…Rh1 37.Kg3 Rh3 38.Kh3 fg4 39.Kh4 d1Q 40.Nf5#; 36.Nf5 Kg5 37.Rb6 Rf1 38.f4 Rf4 39.ef4 Kf4+-) 1–0. Luzuriaga,Norberto Horacio – Vetter,Udo, CiF, 2002.

6.Qd4 Nc6 7.Qf4 Be6 8.Nc3 =.

6.Bd4 Nc6 7.Bb2 a6 8.Nf3 Bg4 9.Be2 0-0 10.Nbd2 d5 11.h3 Bh5 12.c4 dc4 13.Nc4 Qd1 14.Rd1 Rad8 15.0-0 Rfe8 16.g4 Bg6 17.Nfe5 Ne5 18.Ne5 Bd6 19.Nc4 Rd7 (19...Be7 20.Na5 Rb8 21.Rc1+=) 20.Bf3 (20.Bf6 gf6 21.Bf3+/-) 20...b5? (20...Be4 21.Nd6 cd6 22.Be2+/-) 21.Na5?? (better is 21.Bf6 bc4 22.Bc6+-) 21...Be4+= 22.Be2 Ba8 23.Bf6 gf6 24.Nb3 Be4? 25.Nc5+- Rdd8 26.f3 Bg6 27.Nb7 Rd7 28.Nd6 Rd6 29.e4 Red8 30.Rd6+/- Rd6 31.Rd1 Rd1 32.Bd1 h6 33.Bb3 Kf8 34.Bd5 Ke7 35.Bb7 Kd6 36.Ba6 c6 37.Bc8 1–0. Sapareva,Magdalena (1680) – Bureva,Radilena, MGU–13 Open, Sofia BUL, 2010.

6.Bd4 Nc6 7.Bb5 0-0 8.Bc6= bc6 9.Ne2 c5 10.Bf6 Bf6=+ 11.Nbc3 Be5 12.0-0 Bg4 13.f3 Qh4 14.g3 Qh6 15.Qd2 Be6 16.f4 Bf6 17.Rab1 Qh5 18.Qd3 c4 19.Qd2 Rab8 20.e4 Bh3 21.Rf2 Rfc8 22.Nd5 Bd8 23.f5 c6 24.Nef4 Qh6 25.Ne3 Bb6 26.Re1 Rd8 27.Kh1 d5 28.ed5 cd5 29.Nh3 c3 30.Qd3 d4 31.Nc4 Qh3 32.Rfe2 Qh6 33.b5 Ra8 34.Ne5 a6 35.Qc4+- Qh5 36.g4 ab5 37.Qb3 Ra3 38.Nd7 h6 39.Re8 Kh7 40.Nf8 (40…Kg8 41.Ng6 (41.Qa3?! Qh3 42.Ng6 Kh7=) 41...Kh7 42.Qf7 (42.Qa3?! Qh3 43.R8e2 Qf3 44.Rg2 fg6=) 42...Qf5 43.Nf8 Kh8 44.Ne6 Re8 45.Qg7; 40.Qa3?! Qh3 41.Nf8 Kg8 42.Ng6 Kh7=; 40.Nb6?? Re8 (40...Rb3 41.gh5 Re8 42.Re8 Rb1 43.Kg2+-) 41.Rf1 Rb3 42.gh5 d3–+) 1–0. mtr – j, internet, 2009.

6.Bd4 Nc6 7.Bb5 Bd7 8.Nf3 a5 9.Bc6 Bc6 10.c4 ab4 11.ab4 Ra1 12.Ba1 b5 13.cb5 =.

7.Nf3 c5 8.Bb2 Qb6 9.Nbd2 d5 (9...Nc6 10.b5 Na5 11.Bd3 d5 12.a4 a6 13.0-0 ab5) 10.c3 (10.Rb1 Re8 11.bc5 Bc5 12.Nb3 Be7 13.Bd3 Nc6) 10...a5 (10...Nc6 11.Be2 Bf5 12.Nb3 c4 13.Nbd4 Be6) 11.b5 (11.Bd3 Nc6 12.0-0 h6 13.e4 c4) 11...c4 (11...Bf5 12.Be2 h6 13.c4 Qe6) 12.a4 Nbd7 13.Nd4 (13.Be2 Nc5) 13...Ne5 14.N2f3 Qc7 15.Be2 Ne4 16.Qc2 Bd6 17.Ne5 Be5 18.Bf3 Nc5 (18...f5 19.g3+=) 19.Bd5= Nd3 20.Kf1 Bd4 (20...Bh2? 21.Ba3 Be6 22.b6+-) 21.cd4 (worse is 21.ed4 Re8–/+) 21...Bf5 (21...Be6 22.Bf3=) 22.Bc3 (22.Ba3!? Rfc8 23.Bc5+/-) 22...Bg6 (22...Rfe8 23.g3+=) 23.Qd2 Kh8 (23...Rad8!? 24.Bf3 b6=) 24.h4 h5 (24...Rfd8 25.b6 Qc8 26.Bf3+=) 25.Rh3+/- f5 (25...Rad8!? 26.Bf3 b6+/-) 26.f4 Rad8 ½–½. Alonso Martinez,Tomas (2175) – Garcia Carbo,Marcial (2315), ESP–ch Universitario, 1994.

7.Nf3 c6 8.Bd3= h6 9.0-0 Be6 10.Bb2 Nbd7 11.Nbd2 Re8 12.Nd4 Nf8 13.c4 a6 14.h3 c5 15.Ne6 Ne6 16.Ne4 Rc8 17.Qf3 Nd7 18.Rfd1 Qc7 19.Rac1 Qb8 20.Qe2 Ne5 21.f4 Nd3+= 22.Qd3 b5 23.cb5 ab5 24.f5 Ng5 25.Nd6 Bd6 26.Qd6 Qd6 27.Rd6 cb4 28.Rc8 Rc8 29.ab4 Rc4 30.Rd4 Ne4 31.Rc4 bc4 32.b5 Nd6 33.b6 f6 34.e4 Kf7 35.g4 (35...g6 36.e5 fe5 37.Be5+-) 1–0. Kuhlmann,AEJ – Polee,JRB, match–K, 1993.

7.Nf3 Nc6 8.Bb2 Ne4 9.Bd3=.

7.Nf3 Nc6 8.Bd3 =+.

7.Nf3 Bf5 8.Bd3 Qd7 9.0-0 Re8 10.b5 Ne4 11.Nbd2 Nd2 12.Qd2 Bd3 13.Qd3 Qg4 14.h3 Qg6 15.Qg6 hg6 16.a4 Nd7 17.a5 Bf6 18.a6 b6 19.Rfd1 Ne5 20.Be5 Be5 21.Ra4 Re7 22.Rc4 Rae8 23.Ne5 de5 24.Rc6 f6 25.Kf1 Kf7 26.c4 Rh8 27.Ke2 Ke8 28.e4 Rd7 29.Rc1 Ke7 30.Rc3 Rhd8 31.Rc2 Ke8 32.c5 Ke7 33.h4 Ke8 34.g3 Ke7 35.Rc3 Ke8 36.f4 ef4 37.gf4 Rd2 38.Kf3 Rh2 ½–½. marekt – Boardfn, ChessWorld.net, 2004.

6.Bb5 ed4 7.Bd4 c6 =.

6.de5 de5 7.Nf3 Bd6 (7...e4 8.Nd4=) 8.Bc4 (8.Nbd2 0-0=) 8...0-0 9.0-0 a6 (9...e4 10.Nd4=+) 10.Nbd2 b5 11.Bd3 Bb7 12.e4 Rc8 13.c4 bc4 14.Nc4 Ne4 15.Re1 Nef6 16.Nfe5 Be5 17.Ne5+/- Ne5 18.Be5 Qd5 19.Bf1 Qd1 20.Rad1 Nd5 21.Ba6!+- Ba6 22.Rd5 Rfe8 23.Rc1 c6 24.Rdc5 Bb5 25.h3 Rcd8 26.Bf4 h6 27.Ra1 Ra8 28.Kh2 Re2 29.Be3 Rb2 30.Rd1 Ra3? 31.Bc1+- Rb1?? 32.Rd8 Kh7 33.Ba3 1–0. marekt (2195) – maltang (1815), ICC, 2003.

6.de5 Ne5 7.Nf3 Nf3 8.Qf3 0-0 9.Bd3 d5 10.Nd2 c6 11.0-0 a5 12.Bc3 b6 13.ba5 ba5 14.Qf4 Re8 15.Rfb1 c5 16.Bb5 Bd7 17.Be5 Nh5 18.Qf3 ½–½. Boehnke,Hartmut – Rusack,Burghard, DESC Meisterschaft, 2004.

6.Nf3 e4 7.Nfd2 d5 8.c4 c6 9.Nc3 0-0 10.b5 cb5 11.cd5 Nb6 12.Bb5 Nbd5 13.0-0 Nc3 14.Bc3 Qc7 15.Qc2 Bd6 16.h3 a6 17.Be2 Bf5 18.Rfc1 Qd7 19.Nc4= Nd5 20.Nd6 Qd6 21.Ba5 Qd7 22.Rab1 Rfc8 23.Qb2 Rc1 24.Rc1 b6 25.Bd2 b5 26.g4 Be6 27.Qc2= Qd6 28.Qc6 Qc6 29.Rc6= h6 30.f3+= Nf6 31.Rb6 Rc8 32.Bd1 Bd5 33.f4 Rc6 34.Rb8 Kh7= 35.Kf2 g5 36.f5 Ba2 37.a4+= Bc4 38.Ke1 Nd7 39.Rd8 Nf6 40.Ba5 Nd5 41.Kd2 h5 42.gh5 Rh6 43.Rc8 Kg7 44.Bg4 Bd3 45.ab5 ab5 46.Bd8 Ra6 47.f6 Nf6= 48.Bf6 Rf6 49.Kc3 Rf1 50.Rc5 Rc1 51.Kd2 Ra1 52.Rg5 Kh8 53.Kc3 Rc1 54.Kb4 Rb1 55.Kc5 Rc1 56.Kd6 b4+= 57.Re5 Rf1 58.d5 b3 59.Re8 Kg7 60.Rb8 f5 61.Rb3 fg4 62.hg4 Rg1 63.Rb4 Rg4 64.Kc7 Kh6 65.d6+/- Rg7 66.d7 Kh5 67.Rb2 Bf1 68.Kd6 Rg8 69.Ke7 Bh3 70.d8Q Rd8 71.Kd8 Kg4 72.Ke7 (72.Rf2 Kg3 73.Rf6+=) ½–½. larlinde – Dragonwolves, mySchach.de, 2004.

6.Nf3 e4=+ 7.Nfd2 d5 8.c4 c6 9.Be2 Nf8 10.0-0= Ng6 11.Nc3 0-0 12.b5 Be6 13.a4 Bb4 14.Qb3 Bc3 15.Qc3 Rc8 16.Ba3 Re8 17.Rfc1 Qd7 18.Qb2 Bg4 19.Bf1 Qd8 20.bc6 bc6 21.Rab1 h6 22.Qb7 Rc7 23.Qa6 Bc8 24.Qa5 Be6 25.cd5+/- Bd5 26.Qa6 Qa8 27.Nc4 Ne7 28.Qa5 Rd7 29.Ne5 Rb7 30.Ba6 Rb1 31.Rb1 Kh7 32.Bc5 Nfg8 33.Qc7 (33…Be6 34.Qa7 Qa7 35.Ba7=). Woelfelschneider,Peter – van Venetie,Koen, PCM–2003–G2 TSC, 2003.

6.Nc3 a5 7.b5 d5 8.Nf3 Qd6 9.0-0 =.

6.d4 ed4 7.ed4 d5 8.Nf3 Re8 9.0-0 Bd6 10.Ne5 Nbd7 11.f4 Ne4 12.Bh5 Rf8 (12...g6!? 13.Bf3 f6=) 13.Nf7+/- Rf7 14.Bf7 Kf7 15.Qh5 Kg8?? (better is 15...Ke7 16.Qh7 Qf8+/-) 16.Qd5+- Kh8 17.Qe4 Nf6 18.Qf3 Rb8 19.f5 b6 20.c4 (White prepares the advance d5) 20...Bb7 21.d5 a6 22.Nd2 (22.Nc3 Be5+-) 22...b5 23.Rac1 bc4 24.Bf6 Qf6 (24...gf6 25.Nc4 Bd5 26.Qc3+-) 25.Nc4 Qd4 26.Qf2 Qf2 (26...Qd5 27.Rfd1 Qe4 28.Nd6 cd6 29.f6 gf6 30.Qf6 Kg8 31.Qg5 Qg6 32.Qg6 hg6 33.Rd6+-) 27.Rf2 Bd5 (27...Be7 28.Re2 Bg5 29.Rd1+-) 28.Nd6 cd6 29.Rd2 Be4 30.Rd6 Bf5 31.Rc5 (31...g6 32.Ra6+-) 1–0. market (1895) – herbyq (1735), GameColony.com, 2002.

6.Nf3 c6 7.0-0 Bg4 8.h3 Bh5 9.Nh2 Be2 10.Qe2 Nbd7 11.d3 Re8 12.c4 Qc7 13.Nd2 Nf8 14.Ng4 Ng6 15.Nf6 Bf6 16.Ne4 Be7 17.Ng3 Qd7 18.d4 f5 19.de5 de5 20.Rfd1 Qe6 21.c5 Rad8 22.Qc2 Rf8 23.Rd8 Bd8 24.Rd1 Be7 25.Ne2 f4 26.ef4 Nf4 27.Nf4 ef4 28.Rd2 f3= 29.g4?? h5 30.Rd4 Qe1 31.Kh2 Bf6 32.Rd1? Qe2 33.Rd2 Qf1 34.Qb3 Kh8 35.Qf3 Be5!! (35...Be5 36.Be5 Rf3–+) 0–1. Sapareva,Magdalena – Mitov,B (2105), Venka Antonia Ivanova Mem, Sofia BUL, 2010.

6.g4 Be6 7.g5 Nfd7 8.h4 f6 9.Bg4 f5 10.Bh5 a5 11.b5 c6 12.d4 e4 13.Nh3 g6 (13...Qb6 14.g6 hg6 15.Be2=+) 14.Bg6 (14.Be2!?=) 14...hg6=+ 15.h5 (15.Nf4 Bc4 16.Ng6 Rf7=) 15...Bg5-/+ 16.hg6 Bf6 (16...cb5 17.Qh5 Nf6 18.Qg5+-) 17.Qh5 Qe7 18.Ng5 Bd5 19.Nc3 Qg7?? (better 19...Bc4=) 20.Nd5+- cd5 21.Ne6 Qh8 22.Qh8 (22.Nf8?! Nf8 23.Ke2 Qh5 24.Rh5 Nbd7+=) 22...Bh8 23.Rh8! (23.Nf8?! Nf8 24.0-0-0 Nbd7+=) 23...Kh8 24.g7 Kg8 25.gf8Q (25.Nf8?! Nf8 26.gf8N Kf8=; 25.gf8R?! Nf8 26.Nc7 Ra7+-; 25.gf8N?! Nf8 26.Nc7 Ra7+-; 25.gf8B?! Nf8 26.Nc7 Ra7+-) 25...Nf8 26.Nc7 Ra7 27.b6 Ra6 28.Na6 Na6 29.Bc3 Nd7 (better 29...a4+-) 30.Ba5 Kf7 31.Rc1 Nab8 32.c4 (32.Rb1!? Nc6 33.Bc3 Ne7+-) 32...Nc6 33.Bb4 Nb6 (33...Nb4 34.ab4 Nb6 35.c5+-) 34.cd5 (34.Bd6?! Nc4 35.Bc5 N6a5+/-) 34...Nb4 (34...Nd5 35.Bd6 Ke6 36.Bc5+-) 35.ab4 (better 35.Rc7!? Kf6 36.ab4 Nd5 37.Rb7 f4+-) 35...Nd5 36.b5 Ke6 37.Ke2 Kd7 38.f3 f4?? (better 38...Nc7 39.Rb1 b6+-) 39.ef4 (39.fe4 Ne3 40.Kf3 d5 41.Kf4 Nc4+-) 39...Nf4 40.Ke3 Nd3 (40...Nd5 41.Ke4 Ke6 42.Rc8 Nf6 43.Kf4 Nd5 44.Kg5+-) 41.Rh1 Nb2 42.Rh7 Kc8 43.fe4 Nc4 44.Kd3 Na3 (44...Nb2 45.Kc3 Na4 46.Kb4 Nb6+-) 45.b6 Nb5 (45...Kd8+-) 46.e5 de5 47.de5 Kd8 48.Rb7 Kc8 49.Rh7 Kd8 (49...Na3 50.e6 Kb8 51.e7 Kb7 52.e8Q Kb6 53.Qe6 Kb5 54.Qd5 Kb6 55.Rh6 Kc7 56.Qf7 Kd8 57.Rh8) 50.e6 (50.b7 Na7 51.b8Q Nc8 52.Qc7 Ke8 53.Qc8) 50...Nd6+- 51.b7 (51.Rd7 Ke8 52.Rd6 Ke7 53.Rc6 Kf6 54.b7 Kg6 55.e7 Kg5 56.e8Q Kh4 57.Rh6 Kg4 58.b8Q Kf5 59.Qg6) 51...Nb7 52.Rd7 Kc8 53.Rb7! Kb7 (53...Kb7 54.e7 Passed pawn) 54.e7 Kc8 55.e8Q Kc7 56.Kd4 Kb7 (56...Kb6 57.Qa8 Kc7 58.Kd5 Kb6 59.Qb8 Ka5 60.Kc5 Ka4 61.Qb4) 57.Kc5 Kc7 58.Qe7 Kb8 (58...Kc8 59.Kc6 Kb8 60.Qb7) 59.Kc6 Ka8 (59...Kc8 60.Qe8) 60.Qb7 1-0. black_bishop_88 (2555) - sniper_boy (2445), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.e3 Be7 5.Be2)

6.Nc3 e4 7.Nd4 c5 8.Nb3 Nc6 9.b5=+.

6.Nc3 Bg4 7.Bd3 (7.Be2 a5=) 7...Nbd7 8.h3 Bh5 9.Rg1 d5 (9...Nb6 10.g4 Bg6 11.Bg6 fg6 12.d3=+) 10.g4= Bg6 11.g5 (11.Bg6 fg6 12.Ng5 d4 13.ed4 ed4+=) 11...e4=+ 12.gf6 Nf6 13.Ne5 ed3 14.cd3 Bd6 15.Ng6 hg6 (15...fg6 16.f4=+) 16.Qf3 0-1. opperwezen (2710) - Jasugi99 (2765), lichess.org, 2020. (=1.a3 e5 2.b4 d6 3.Bb2 Be7 4.e3 Nf6 5.Nf3)

6.Nc3 Bg4 7.Be2= Nbd7 8.h3 Bh5 9.Ng5 (9.g4 Bg6=) 9...Bg6 10.h4 h6 11.h5 Bf5 12.Nf7?? (better 12.e4=) 12...Rf7 (12...Kf7!? 13.Bc4 Be6 14.Be6 Ke6 15.e4-+) 13.Bc4 Nb6 14.Bf7 Kf7 15.Qf3 Bc2 16.Qb7 Bf8 (better 16...Nc4 17.Bc1 a5-+) 17.Nd5?? (better 17.Nb5 Be4 18.Qc7 Qc7 19.Nc7-/+) 17...Ke6 (better 17...Nfd5 18.Qc6 Bd3-+) 18.Nc7+- Qc7 (18...Kf7 19.Na8 Kg8 20.Nb6 ab6 21.f3+-) 19.Qc7 Ng4 (19...Bd3+-) 20.Qc4 (better 20.Qc2 Rc8 21.Qe4+-) 20...Nc4-+ 21.b5 (21.Rc1 Nb2 22.Rc2 Nd3 23.Ke2 Ndf2-+ (23...Ngf2?! 24.Rf1-+)) 21...Kd5 (better 21...Nb2 22.d4 Rc8-+) 22.e4 (22.Bc3-+) 22…Ke4 (22...Ke4 23.f3 Kd5-+) 0-1. TwelveTeen (2715) - opperwezen (2695), lichess.org, 2017.

6.c4 a5 7.b5 Bg4 8.Be2 Nbd7 9.0-0 e4 10.Nd4 Be2 11.Ne2 Nc5 12.a4 Nd3=+ 13.Bc3 d5 14.cd5 Nd5 15.Bd4 Bf6 16.Bf6 Qf6 17.Nbc3 Qe5 18.Nd5 Qd5 19.Nc3 Qe5 20.Qe2 Rfd8 21.f3= Nc5 22.fe4 Ne4 23.Ne4 Qe4 24.Rf4 Qc2 25.Rf2 Rd7 26.d4 Qc3 27.Qe1 Qe1 28.Re1 Re8 29.Rfe2 f5 30.g3 Kf7 31.Kf2 Ke6 32.Rc1 Kd6 33.Rc5 g6 34.h3 Re4 35.Kf3 Rde7 36.Rc3 g5= 37.Rc5 f4 38.Rg5 fe3 39.Rh5 Rd4–/+ 40.Re3 Rf7 41.Ke2 Ra4 42.Rd3 Ke7 43.Rc3 Ra2 44.Ke3 Kd8 45.Rd3 Ke8 46.Rhd5 Re7 47.Kf3 a4 48.Rd8 Kf7 49.Rb8 b6 50.Rbd8 a3 51.Ra8 Rb2 52.Raa3 Rb5 53.Rd4 Rf5 54.Kg4 Rf6 55.h4 c5 56.Rc4 Rc7 57.Rb3 Ke7 58.h5 Kd7 59.Kg5 Rd6 60.g4 Kc6 61.Kf5 b5 62.Re4 Rf7 63.Kg5 c4 64.Rc3 Kc5 65.Kh4 Rd4 66.Re8 Rc7 67.Rce3 b4 68.h6 c3 69.R8e7 Rdd7 70.R3e5 Kc4 71.Re4 Kb3 72.R7e5 c2 73.Re3 Rc3 74.Re1 Rd1 75.g5 c1Q 76.R1e4 Rc4 77.Kh5 Rh1 78.Kg4 Re4 79.Re4–+ Rg1 (80.Kf3 Qf1 81.Ke3 Rg3 82.Kd4 Qd3 83.Ke5 Rg5 84.Kf6 Rg6 85.Ke7 Qe4 86.Kf8 Rf6 87.Kg7 Qg6 88.Kh8 Rf8#) 0–1. Krc,Milan (1880) – Svihel,Karel (2155), Brno Trade op–A, 2005.

6.Bc4 c6 7.0-0 d5 8.Ba2 e4 9.Nd4 a5 10.c3 Qc7 11.d3 Ng4 12.g3 ed3 13.Qd3 Ne5 14.Qe2 Bh3 15.Rd1 Nbd7 16.Nd2 Nb6 17.N2f3 Bg4 18.Kg2 Na4 19.Rab1 Bf6 20.h3 Bf3 21.Nf3 Nf3 22.Qf3 ab4 23.ab4 Bc3 24.Bc1 Be5 25.Bb3 Nc3 26.Bd2 Nb1 27.Rb1 Qd6 28.h4 Qf6 29.Qe2 Rfd8 30.h5 Bc3 31.Bc3 Qc3 32.h6 Ra3 33.hg7 Rb3 34.Rh1 Re8 35.Qh5 Qg7 36.Rh4 Qg6 37.Qf3?? Re4 38.Rh5 Rbb4 0–1. maxeem – yaman, Live Game Caissa's Web, 2004.

6.Bc4 Nc6 7.d3 (7.0-0 e4 (7...d5 8.Be2 e4 9.Nd4 Bd7 10.b5 Ne5) 8.Nd4 Nd4 (8...a5 9.b5 Nd4 10.Bd4 d5) 9.Bd4 Be6 10.Be6 fe6=; 7.Be2 e4 8.Nd4 Nd4 9.Bd4 c5 10.Bf6 Bf6) 7...h6 (7...d5 8.Ba2=+ (8.Bb3 a5 9.b5 a4 10.bc6 e4) 8...Bd6 9.Nbd2 b5 10.Nb3 Qe7) 8.Nbd2=+ (8.0-0 d5 9.Bb5 e4 10.de4 de4) 8...Re8 (8...d5 9.Bb5 e4 10.de4 de4 11.Bc6 bc6 12.Ne5=+) 9.0-0= (9.e4 Bd7 10.0-0 Qb8) 9...Bf8 (9...a6 10.Bb3= b5; 9...d5 10.Bb3 Bd6) 10.Bb3 (10.Ne4 Be7) 10...Be6 (10...a6 11.h3=) 11.Be6+= Re6 12.c4 (12.b5 Ne7+=) 12...Qd7 (12...a6 13.Qc2=) 13.d4 Ree8 (better 13...ed4!? 14.ed4 d5=) 14.b5+- Na5 15.de5 Ng4 (15...de5!? 16.Be5 Qf5 17.Bc7 b6+-) 16.ed6+- Bd6 (16...cd6 17.Bc3 b6 18.Ba5 ba5 19.Qa4+-) 17.Qc2 (17.Bc3 b6+-) 17...Qe7 (17...b6 18.Bc3+-) 18.h3 (18.c5!? Ne3 (18...Bc5?? 19.Qc3 Qf6 20.Qc5 Qb2 21.Qb4 Qb4 22.ab4+-) 19.Qc3 Be5 20.Ne5 Nf1 21.Rf1 f6 22.Qa5 fe5+-) 18...Nf6 (18...Ne5 19.Nd4 Bc5 20.Nf5+-) 19.Nh4 (19.e4 Bf4+- (19...Ne4? 20.Ne4 Qe4 21.Qc3+-)) 19...Be5 20.Nf5 Qc5 (20...Qd7 21.Be5 Re5 22.Nh6 gh6 23.Qc3+-) 21.Nd4 (better 21.Bd4 Bd4 22.ed4+- (22.Nd4?! Rad8+-)) 21...Rad8? (21...a6 22.Bc3 Qb6 23.Rab1+-) 22.a4?? (better 22.Bc3 b6 23.Bb4 Bd4 24.Bc5 Bc5 25.Rfd1+-) 22...g6?? (better 22...Bd4 23.Bd4 Qe7+-) 23.Ba3+- Bd4 24.Bc5 Bc5 25.Nf3 (25.Rad1 Rd6+-) 25...b6 (25...Ne4 26.Rad1 Bd6 27.Rd4+-) 26.Qc3 (better 26.Rad1!? Rc8+-) 26...Ne4 27.Qc2 Nd6?? (27...Nf6 28.Rad1 Rc8+-) 28.Nd2+- Nf5 (28...Re5 29.Rab1+-) 29.Rad1 (29.Ne4 Re5+-) 29...Nb7 (29...Re3 30.Ne4 Rd1 31.Rd1 Nd4+-) 30.Ne4 Be7 31.Rd8 Rd8 (31...Nd8 32.g4 Nd6 33.f4+-) 32.Rd1 Nbd6 (32...Kg7 33.Rd8 Nd8 34.Qb2 Kg8 35.g4+-) 33.g4 (33.c5 Ne8+-) 33...Ng7 (33...Nh4 34.f4+-) 34.c5 Ne4 (34...Nde8 35.Rd8 Bd8 36.f4+-) 35.Rd8 Bd8 36.Qe4 Ne6 (36...Kf8 37.Qa8 Ne6 38.Qa7+-) 37.cb6 ab6 38.f4 Kh7 (38...Kg7+-) 39.f5 Ng7 (39...gf5 40.gf5 Ng5 41.Qd5+-) 40.fg6 (better 40.Qd5 Bg5 41.Qf7 Be3 42.Kg2 gf5 43.gf5 Bd4+-) 40...fg6 41.Qd5 (41.Qc6 Bg5 42.Kf2 Bh4 43.Kg2 Be1+-) 41...Be7 (41...Bg5 42.Kf2 Bf6 43.e4+-) 42.e4 Bc5 (42...Bb4 43.Kg2 h5 44.gh5 Nh5 45.Qf7 Kh6 46.Qc7+-) 43.Kg2 Ne8 (43...Bb4 44.e5+-) 44.Qf7 (44.a5 ba5 45.Qc5 Kg8+-) 44...Ng7 45.e5 1–0. Gonzalez Berrendero,Carlos (1775) – Fernandez Garcia,E, 24th Torneo San Viator, 2015.

6.Bc4 e4 7.Nd4–/+ c5 8.bc5 (8.Nb3 d5 9.Be2 cb4 10.ab4 Bb4) 8...dc5 9.Nb3 Nc6 10.h3 Be6.

6.Bc4 Be6 7.Be6= fe6 8.0-0 Nc6 9.d3 Qe8 10.c4 Qg6 11.b5 Nd8 12.Nc3 Nf7 13.Ne2 Nh5 14.Ng3 Ng3 15.hg3 Nh6 16.Nh2 Nf5 (16...a6 17.Rc1+=) 17.c5 Rac8 18.Qa4 Ra8 19.e4 Nh6 20.Rac1 Bd8 (20...dc5 21.Be5 a6 22.Bc7 ab5 23.Qb5 Ra3 24.Bf4=) 21.cd6 (21.Nf3!?=) 21...cd6+= 22.Qb4 Nf7 23.Rc2 Bb6 24.Qb3 Rae8 25.g4 Nh6 26.Qb4 Bc5 (26...Rd8 27.Rfc1–/+) 27.Rc5+= dc5 28.Qc5 b6 29.Qe5 Ng4 30.Ng4 Qg4 31.Re1 Qg6 (31...Rc8!? 32.Bd4 Rf6–/+) 32.Re3= Qf6 33.Rg3 Qe5 34.Be5 Rf7 ½–½. Frank,Detlev (1840) – Rose,Norman, Pinneberg–ch, 2006. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 Be7 5.Nf3 0-0)

6.Bc4 Bg4 7.h3 Bh5 8.g4 Bg6 9.0-0 Ne4 10.d3 Ng5 11.Ng5 Bg5 12.Nc3 c6 13.Ne4 Be4 14.de4+= b5 15.Bb3 Nd7? 16.Qd6+- Rc8 17.Rad1 Rc7 18.Be5 Ne5 19.Qe5 Qe7 20.Qf5 Bh4 21.Rd2 Qf6 22.Qf6 Bf6 23.Rd6 Re8 24.Rfd1 g6?? 25.Rf6 1–0. Wall,Bill – Camaguey, internet, 2004.

6.d3 a5 7.b5 c6 8.c4 cb5 9.cb5 Be6 10.Be2 Nbd7 11.0-0 h6 12.Nc3 d5 13.Rc1 Bd6 14.Na4 Qe7 15.d4 e4 16.Ne5 Rac8 17.Qb3 Bb8 18.Nd7 Bd7 19.g3 Ba7 20.Rc8 Rc8 21.Rc1 Rc1 22.Bc1 b6 23.Nc3 Be6 24.a4 Bb8 25.Ba3 Bd6 26.Bd6 Qd6 27.Qc2 ½–½. Fournier,Frederic – Dyonisos, echecsemail.com (team), 2010.

6.d3 Be6 7.Nbd2 Nbd7 8.h3 h6 9.Be2 a5 10.b5 Nc5 11.g4 (better 11.c4=) 11...Bg4?? (better 11...Na4 12.Qc1 Nd7-/+) 12.hg4+- Ng4 13.Rg1 (13.c4 Re8+-) 13...Nf6 14.Ne5 (better 14.c3+-) 14...de5+= 15.Be5 Bd6 16.Bd6 cd6 17.Rh1 Nd5 18.Nf3 (18.c4 Nc3 19.Qc2 Ne2 20.Ke2 Qf6+=) 18...Nf6 (18...Nc3 19.Qd2 Nb5 20.c4=+) 19.Kf1 (19.c4 a4+=) 19...Kh7 (19...Rc8 20.Ke1=) 20.Rh3 0-1. opperwezen (2665) - JannLee (2680), lichess.org, 2018.

6.d3 Be6 7.Be2 Nbd7 8.c4 c6 9.0-0 Qc7 10.Nbd2 d5 11.cd5 cd5 12.Rc1 Qd6 13.Nb3 Rac8 14.Qd2 d4 (better is 14...Rfe8!?=) 15.ed4+/- Bb3 16.de5 Ne5 17.Be5 Qd5 18.Rc8 Rc8 19.Rc1 Rc1 20.Qc1 h6 21.d4 Ng4?? (better is 21...Qe4 22.Qc8 Kh7+-) 22.Qc8+- Kh7 (22...Bf8 23.Qg4 Qc6 24.Qf4+-) 23.Qg4 f6 24.Bd3 Kh8 25.Qc8 Qg8 26.Qg8 Kg8 27.Bb8 a6 28.Be4 b6 29.Bc7 a5 30.ba5 ba5 31.Ba5 Ba3 32.Nd2 Be6 33.d5 Bc8 34.Bc3 Kf8 35.f3 Ke8 36.Kf1 Ba6 37.Ke1 Bc5 38.Kd1 Bg1 39.h3 Kd7 40.Kc2 Be3 41.Kb3 Be2 42.g4 Bd1 43.Kb4 Bg1 44.Nc4 Be2 45.h4 Bf2 46.h5 1–0. Fournier,Frederic (1630) – sarita, Active, 2006.

6.d3 Be6 7.Be2 h6 8.Nbd2 Nbd7 9.0-0 c6 10.c4 Re8 11.Re1 Bf8 12.Rc1 a5 13.b5 cb5 14.cb5 Qb6 15.a4 Rac8 16.Nc4 Bc4 17.dc4 Nc5 18.Nd2 g6 19.h3 Bg7 20.Qc2 Nfd7 21.Bf3 Qc7 22.Ne4 Ne4 23.Qe4 Nc5 24.Qc2 e4 25.Be2 Nd3 26.Bd3= ed3 27.Qd2 Bb2 28.Qb2 Re4 29.Red1 Rc4 30.Rc4 Qc4 31.Qa3 Qb4 32.Rd3 Qa3 33.Ra3 Kf8 34.Kf1 Ke7 35.Ke1 Rc2 36.Rd3 Ke6 37.Rd2 Rc4 38.Ra2 Kd5 39.Kd2 Kc5 40.Kd3 d5 41.f3 f5 42.g4 h5 43.gf5 gf5 44.f4 h4 45.Ra1 d4 46.ed4 Rd4 47.Ke3 Rc4 48.Ra3 Kb4 49.Rd3 Rc3 50.b6 Kc4 51.Rc3 Kc3 52.Ke2 Kd4 53.Kf3 Kd3 54.Kf2 Ke4 55.Ke2 Kf4 0–1. Fournier,Frederic – Abergel,Thal, Open Paris FRA, 1999.

6.d3 Re8 7.Nbd2 c6 8.g3 (8.Be2 a5=) 8...Bf8 (8...a5 9.Bg2=+) 9.Bg2= g6 10.0-0 Bg7 11.c4 Nbd7 12.Qc2 d5 13.e4 de4 (13...d4 14.c5=) 14.Ne4 Ne4 15.de4 Nf8 16.Rad1 Qe7 17.c5 Bg4 18.h3 Bf3 19.Bf3 Ne6 20.h4 (20.Qc4 Rad8=) 20...Nd4= 21.Bd4 ed4 22.Rd3 h5 23.Rfd1 a5 24.Qc4 ab4 25.ab4 Red8 26.Kg2 Qc7 27.b5 (27.Qc2 b5=) 27...Qa5 (better 27...cb5!? 28.Qb5 Ra5-/+) 28.bc6 bc6 29.e5 Be5 30.Bc6 Rac8 31.Bd5 Rc5 32.Bf7 Kg7 33.Qa2 Qa2 34.Ba2 Rdc8 35.R1d2 Rc2 36.Be6 Rd2 37.Rd2 Rc3 38.Bd5 Kf6 (38...Ra3 39.Be4=) 39.Be4 (39.f4!? Bd6 40.Rd4 Rc2 41.Kh3+/-) 39...g5= 40.Rd3 (40.hg5 Kg5 41.Ra2 Bg3 42.fg3 Kg4=) 40...Rd3 41.Bd3 gh4 42.gh4 Bf4 43.Kh3 Ke5 44.Kg2 Bh6 45.Kf3 Bg7 46.Bg6 Bf6 47.Bh5 (47.Kg3 Be7=) 47...Bh4 48.Bg6 Bf2 49.Bd3 (49.Kf2 Kd5=) 49...Kd6 (49...Be3 50.Ke2-/+) 50.Ke2 (50.Kf2 Kc5=) 50...Kc5 (50...Bg1 51.Be4-/+) 51.Kf3 (51.Kf2 Kb4=) 51...Kb4 (51...Be3 52.Ke2-/+) 52.Ke4 (52.Kf2 Kc5=) 52...Kc5 53.Bc2 (53.Kf3 Be3-/+) 53...Kb4 54.Kd3 (54.Bd3 Kc3-/+) 54...Kc5 55.Bd1 (55.Ke4 Be3 56.Kd3-/+) 55...Kd6 56.Be2 Ke7 57.Bf3 Kd6 58.Bg4 (58.Be2 Ke5-/+) 58...Ke7 59.Bh3 (59.Bf3 Be3-/+) 59...Kd6 60.Bg2 (60.Bg4 Ke5-/+) 60...Ke7 61.Be4 (61.Bf3 Ke6-/+) 61...Kd6 62.Ke2 (62.Bg2 Kc5-/+) 62...Ke7 (62...Bg3 63.Kd2-/+) 63.Kd3 (63.Kf2 Kd6=) 63...Kd6 64.Bb7 (64.Bg2 Be3-/+) 64...Ke7 (64...Ke5 65.Bc6-/+) 65.Ba6 (65.Be4 Be3-/+) 65...Kd6 66.Bc4 (66.Bb7 Ke5-/+) 66...Ke7 67.Bb3 (67.Ba6 Ke6-/+) 67...Kd6 68.Ba2 (68.Bc4 Ke5-/+) 68...Ke7 69.Kc4 (69.Bb3 Kf6-/+) 69...Kd6 70.Kd3 Ke7 71.Ke4 (71.Bb3 Kf6 72.Bd5-/+) 71...Kf6-/+ 72.Bb3 Ke7 73.Bc4 (73.Kd3 Bg1-/+) 73...Kf6 74.Kd5 (74.Bb3 Kg5-/+) 74...Ke7 75.Ke4 Kf6 76.Kd5 Ke7 (76...Kf5 77.Bd3 Kf4 78.Kc4-/+) 77.Ke5 (77.Ke4!?=) 77...Kd8 78.Bd3 Kc7 79.Ke4 Bg3 (79...Kd6 80.Bc4 Be3 81.Bd5-/+) 80.Kf3 (80.Kd4 Kd6=) 80...Bf2 (80...Be5 81.Ke4 Kd6 82.Be2-/+) 81.Ke4 (better 81.Kf2!? Kd6 82.Ke2=) 81...Be3 82.Kd5 Bf2 (82...Kb6 83.Kc4-/+) 83.Kc4 (83.Ke4 Kd6-/+) 83...Be3 84.Kd5 Bf2 (84...Kb6 85.Kc4-/+) 85.Kc4 (85.Ke4 Kd6 86.Bc2-/+) 85...Be3 (85...Kd6!?-/+) 86.Kd5= ½-½. black_bishop_88 (2500) - alex_1094 (2495), lichess.org, 2020. (=1.a3 d6 2.b4 Nf6 3.Bb2 e5 4.Nf3 Be7 5.e3)

6.d4 ed4 7.Qd4 Bf5 8.Bd3 Bd3 9.Qd3 b6 10.0-0 Nbd7 11.c4 c5 12.Rd1 Qc7 13.Nc3 a6 14.b5 ab5 15.Nb5 Qc6 16.Nd6 Bd6 17.Qd6 Qd6 18.Rd6 Ra4 19.e4! Rd8 20.Rad1 Ra7 21.Ne5 h6 22.Nc6 Ne4 23.R6d3 f6 24.Na7 1–0. Klaus Behrmann (2250) – Stiller, ChessWorld.net, 2003.

6.d4 e4 7.Nfd2 d5 8.c4 a5 9.c5 ab4 10.ab4 c6?? (better 10...Bg4 11.Be2 Be2 12.Qe2 Nc6 13.Ra8 Qa8-/+) 11.Ra8+- Qa5 (11...Na6+-) 12.ba5 Na6 13.Ba6 (better 13.Qb3 Nc5 14.dc5 Nd7 15.Rc8 Rc8 16.Qb7 Rd8+-) 13...Bg4 14.Rf8 (14.Rf8 Bf8 15.Be2+-) 1-0. TwelveTeen (2600) - TheCountt (2515), lichess.org, 2018.

6.d4 Bg4 7.de5 Bf3 8.Qf3+/- de5 9.Be5 Nc6 (9...Nbd7 10.Bc3+/-) 10.Bb2 Re8 11.Bd3 Qd6 12.0-0 (12.Qg3 Rad8+-) 12...h6 (better 12...Ne5!? 13.Be5 Qe5+/-) 13.Nd2 Qe6 14.Bc4 (better 14.b5 Nd8 15.Rfd1+-) 14...Qd6? (14...Ne5 15.Be5 Qe5 16.Qb7+-) 15.Rad1 (better 15.Ne4 Qd8+-) 15...Ne5 16.Qe2 (better 16.Qb7!? Nc4 17.Nc4+-) 16...Nc4+/- 17.Nc4 Qc6 (17...Qe6 18.Na5+/-) 18.Ne5 (18.Na5 Qb6+-) 18...Qe6+/- 19.c4 (19.Qc4 Bd6 20.Qe6 Re6+/-) 19...Bd6 (19...a5 20.c5+/-) 20.Nf3 Ng4 (20...b6 21.Nd4 Qe5 22.g3+/-) 21.h3 Nf6 22.Nd4 (22.c5 Be7+-) 22...Qe5+/- 23.Nf3 Qe6 24.Rd3 (24.c5 Be7+-) 24...c6 25.Rd4 (25.Rfd1 Rad8+-) 25...Bc7 26.Rfd1 Rad8 27.Rd8 Bd8 (27...Rd8 28.Rd8 Bd8 29.Qd3+/-) 28.Qd3 (28.Nd4 Qe4+-) 28...Bc7+/- 29.Nd4 (29.Qc2 Ne4+/-) 29...Qe5+= 30.g3 Ne4 31.Qe2 h5 (31...Ng3!? 32.fg3 Qg3 33.Qg2 Re3 34.Qg3 Rg3 35.Kf2 Rh3+=) 32.Qf3 (32.Nc6 Ng3 A) worse 33.fg3 Qg3 34.Qg2 Qe3 (worse 34...bc6 35.Qg3 Bg3 36.Bd4+=) 35.Kh1 Qe1 36.Re1 Re1 37.Qg1 Rg1 38.Kg1 bc6=+; B) 33.Ne5 Ne2 34.Kf1 Ng3 35.Kg2+-) 32...Ng5? (32...h4 33.gh4 Rd8 34.Kf1+/-) 33.Qg2 (better 33.Qh5!? c5 34.Ne6 Nh3 35.Qh3 Qe6 36.Qe6 Re6 37.bc5+-) 33...Ne4+/- 34.Ba1 c5 (34...Qd6 35.Qf3 Qg6 36.Kg2+/-) 35.Nf3 (35.Nb3 Qe6 36.Nc5 Nc5 37.bc5 Qc4 38.Qb7 Qc5+-) 35...Qf5 (35...Qe6 36.Qf1+/-) 36.b5 (36.Rd5 Qg6 37.Be5 Be5 38.Ne5 Qh7 39.bc5 h4+-) 36...Nf6 (36...Rd8 37.Rd8 Bd8 38.Be5+/-) 37.Bf6 Qf6 38.Ne1 Qb2 (better 38...h4 39.Rd7 Re7 40.Re7 Qe7 41.gh4 Bd6+-) 39.Nd3?? (39.Rd7 Bb6 40.Qd5 Qf6+-) 39...Qf6?? (39...Qc2 40.Qf1 Rd8=+ (worse 40...Qc4 41.Rc1 Qb5 42.Rc5+=)) 40.Nc5 Bb6? (40...b6 41.Nd7 Qe7 42.Qc6 Bg3 43.fg3 Qe3 44.Kh1+-) 41.Ne4 (41.Nb7 Re5+-) 41...Qe5? (41...Qe7 42.c5! Bc5 43.Nc5 Qc5 44.Qb7 Qa3 45.Rd7+-) 42.Nd2 (better 42.Nd6 Re7 43.Nc8+-) 42...Qe7 (42...Rd8 43.Qf3+-) 43.Nf3 (43.Qf3 h4+-) 43...Rd8 (better 43...Qa3!? 44.Rd7 Rd8 45.Rb7 Qc1 46.Kh2 Qc4+/-) 44.Rd8+- Qd8 45.Nd4 Bd4 46.ed4 Qd4 47.Qd5 Qd1?? (47...Qa1 48.Kg2 Qc3+-) 48.Qd1 Kh7 49.Qf3 (49.c5 g6+-) 49...f6 50.Qe4 g6 51.Qd5 (better 51.Qb7 Kh6+-) 51...Kh6 52.Qd7 (better 52.c5 g5 53.c6 bc6 54.bc6 Kg6 55.c7 Kg7 56.c8Q h4 57.Qdd7 Kh6 58.Qh8 Kg6 59.Qhh7) 52...f5 53.Qb7 (53.h4 g5 54.hg5 Kg6 55.Qe6 Kg7 56.Qf6 Kg8 57.g6 h4 58.Qf7 Kh8 59.Qf8) 53...h4 54.Qc6 (better 54.Qa7!? hg3 55.Qe3 g5+-) 54...hg3 55.b6 (better 55.c5 Kg7 56.b6 g5 57.ba7 gf2 58.Kf2 g4 59.a8Q g3 60.Ke2 f4 61.Qab7 Kf8 62.Qcc8) 55...Kg5 56.f4 (56.ba7 Kh6 57.f4 Kh7 58.Qd7 Kh6 59.a8Q g5 60.Qac6 Kh5 61.Qh7) 56...Kh6 (56...Kf4 57.b7 Kg5 58.b8Q Kh6 59.Qf6 f4 60.Qbh8) 57.Kg2 (57.ba7 Kh7 58.Qc7 Kh6 59.a8Q g5 60.Qac6 Kh5 61.Qh7) 57...a5 58.Kg3 (58.b7 Kg7 59.Qd7 Kh6 60.b8Q g5 61.Qbd6 Kh5 62.Qh7) 58...a4 (58...Kg7 59.b7 g5 60.Qc7 Kf6 61.b8Q gf4 62.Kh4 f3 63.Qbb6) 59.Kf3 (59.b7 Kh7 60.Qd7 Kh6 61.b8Q g5 62.Qbd6 Kh5 63.Qe8) 59...Kh5 (59...Kh7 60.b7 g5 61.fg5 Kg7 62.Qf6 Kg8 63.b8Q Kh7 64.Qbh8) 60.Ke3 (60.Qf6 g5 61.Qg5) 60...Kh4 (60...Kh6 61.b7 Kh7 62.Qd7 Kh6 63.b8Q g5 64.Qbd6 Kh5 65.Qh7) 61.Kd4 (61.Qg6 Kh3 62.Kf3 Kh4 63.Qh7) 61...Kg3 62.Ke5 (62.Qg6 Kf2 63.b7 Ke2 64.Qg2 Ke1 65.b8Q Kd1 66.Qb1) 62...Kh2 (62...Kf2 63.b7 Kg3 64.Qg6 Kf3 65.Qf5 Ke2 66.b8R Ke3 67.Rb2 Kf3 68.Qd3) 63.Kf6 (63.Kf6 Kg1 64.b7 Kf1 65.Qf3 Kg1 66.b8Q Kh2 67.Qb2 Kg1 68.Qd1; 63.Qg6 Kh1 64.b7 Kh2 65.b8Q Kh1 66.Qb7 Kh2 67.Qbg2) 1-0. Stephan,V (2430) - Houard,S (2120), Cappelle Online Bullet, lichess.org, 2021.

6.Be2 a5 7.b5 Nbd7 8.0-0 Nb6 9.c4 Be6 10.d3 e4 11.Nfd2 ed3 12.Bd3 Nbd7 13.Nc3 Ne5 14.Be2 Ned7 (14...Re8 15.Nd5=) 15.Bf3 Nc5 16.Na4 Nfd7 17.Nc5 Nc5 18.Bd4 Bf6 19.Rc1 Rb8 20.Ne4 Ne4 21.Be4 Bd4 22.Qd4 b6 23.f4 f5 24.Bd5 Qf6 25.Rc3 Rbe8 26.Qf6 Rf6 27.Kf2 Kf7 28.Ke2 Ke7 29.Kd3 Kd8 30.Bf3 ½–½. Sjoefors,Holger (1825) – Erlandsson,Calle (1850), SWE team ch div II:6, 2004.

6.Be2 a6 7.0-0 Nc6 8.c4 Bg4 9.d4 e4 10.Nfd2 Be2 11.Qe2 d5 12.Nc3 dc4 13.Qc4 Re8 14.Nde4+/- Ne4 15.Ne4 Bb4? 16.d5+- Qh4 17.Nf6! Qf6 18.Bf6 gf6 19.ab4 Ne7 20.e4 Rac8 21.Rfc1 Ng6 22.d6 Ne5 23.Qd5 cd6 24.Rc8 Rc8 25.Qb7 Rc4 26.Qa6 Rb4 27.Qd6 Re4 28.Qf6 Nf3 29.gf3 Re8 30.Ra5 (30...Re1 31.Kg2 Re8 32.Rg5 Kf8 33.Rf5 Kg8 34.Qf7 Kh8 35.Qf6 Kg8 36.Rg5#; 30.Kh1 h6 31.Qh6 f6 32.Qg6 Kf8 33.Qf6 Kg8 34.Rg1 Kh7 35.Qg7#) 1–0. aschellen (1955) – u win thein (1800), internet, 2007.

6.Be2 b6 7.0-0= Bb7 8.c4 Nbd7 9.Nc3 c6 10.Qc2 g6 11.Ne4 Ne4+= 12.Qe4 Nf6 13.Qc2 Re8 14.Rfe1 Bc8 15.Rad1 Qc7 16.d4 Bf5= 17.Qd2 e4=+ 18.Nh4 d5 19.Nf5+= gf5 20.h3 Qd6 21.c5 Qe6+= 22.Rc1 b5 23.Qd1 Kh8 24.f4 Rg8 25.Kh1 Rg3 26.Bc3 Nd7 27.Rg1 Qh6 28.Bh5?? Nf6–+ 29.Be1 Re3 30.Bh4 Nh5 31.Be7 Ng3 32.Kh2 Ne2 33.Bg5–/+ Qh5 34.Re1 h6 35.Bf6 Kh7 36.Rc2 Qg6 37.Ree2 Re2–/+ 38.Qe2 Qf6 39.Qe3 a5 40.ba5 Ra5 41.Qc3 Ra4–+ 42.Rd2 Rc4 43.Qe3–/+ Qd8 44.Qb3 Qa5–+ 45.Rd1 Rc3 46.Qb4 Qa3 47.Qa3 Ra3 48.g4 fg4 49.hg4 Rd3 50.Ra1 Rd4 51.Ra6 e3 52.g5 e2 53.Rc6 hg5 54.fg5 e1Q 55.Rh6 Kg7 56.Rf6 Qh4 57.Kg1 Qg5 58.Kf1 Qf6 59.Ke2 Qe5 (60.Kf3 Rf4 61.Kg2 Qg5 62.Kh3 Rh4; 59...Qf4 60.Ke1 Qf3 61.c6 Rd1) 0–1. Talreja,M – Triplett,Thomas, East Lansing ch–MI amateur, 1992.

6.Be2 b6 7.0-0 Bb7 8.d3 Nbd7 9.Nbd2 a5 10.c4 ab4 11.ab4 Ra1 12.Ba1 c6 13.Qb3 Qc7 14.Rc1 Ra8 15.Bb2 h6 16.h3 c5 17.d4 Ne4 18.d5 Nd2 19.Nd2 cb4 20.Qb4 f5 21.e4 fe4 22.Ne4 Nc5 23.Nc5 Qc5 24.Qc5 bc5 (24...dc5? 25.Be5 Ra2 26.Bg4+-) 25.Ra1 Ra1 26.Ba1 Bc8 27.Bc3 ½–½. Isaacson,David (2080) – Issacson,Leon, ZH–2009–0-00282, 2009.

6.Be2 b6 7.0-0= e4 8.Ne1 =.

6.Be2 c6 7.0-0= Nbd7 8.c4 Re8 9.Qc2 Bf8 10.d4 ed4 11.Bd4 Ne4 12.Bd3 Ndf6 13.Nc3 Qe7 14.Ne4 Ne4 15.c5 d5 16.Nd2 Nd2 17.Qd2 Bd7 18.Rfe1 Qh4 19.Qe2 Re6 20.g3 Qh3 21.Qf3 Rh6 22.Qg2 Qh5 23.e4 Bh3 24.Qh1 Bg4 25.Re3 de4 26.Be4 Rd8 27.Bc3 Re6 28.h3 Qh3 29.Qh3 Bh3 30.Rae1 g6 31.f3 Bg7 32.Bg7 Kg7 33.g4 Rd2 34.R3e2 Re2 35.Re2 f5 36.Bd3= Re2 37.Be2 fg4 38.fg4 h5 39.gh5 gh5 40.Bh5 Kf6 41.Kf2 ½–½. Flazinski,Pawel – Bienkowski,Gabriel (2050), Leba, 2002.

6.Be2 Nc6 7.c4 Bg4 8.d3 Bf3 (8...Qd7!?=) 9.Bf3+= a6 10.Nd2 Rb8 11.Ne4 Ne4 12.Be4 f5 13.Bf3 Bg5 14.0-0 f4 15.ef4 Bf4 16.g3 Bh6 17.Bg2 Qg5 18.d4 Qd2? (better is 18...ed4 19.f4 Qg6+=) 19.Qd2+- Bd2 20.Bc6 bc6 21.de5 de5 22.Be5 Rbc8 23.Rad1 Bg5 24.f4 Bf6 25.Bf6 Rf6 26.Rfe1 Rd6 27.Rd6 cd6 28.Re6 Rd8 29.Kf2 d5 30.Rc6 d4? 31.c5 d3 32.Rd6 Rd6 33.cd6 Kf7 34.Ke3 Ke6 35.Kd3 Kd6 36.Kd4 h5 37.h3 g6 38.g4 h4 39.a4 (39.a4 Ke6 40.Kc5+-) 1–0. Fournier,Frederic (1750) – OCHObre, Active, 2006.

6.Be2 Qd7 7.0-0 Qf5 (7...e4 8.Nd4 a5 9.f3 c5 10.bc5 dc5 11.Nb5 ef3 12.Rf3 Nc6 13.Qf1 Qd8=; 7...a6 8.d4 (8.d3 Re8 9.c4 a5 10.Nc3 Qf5 11.Qa4 Bd7 12.b5 Qg6 13.Ne1 Be6=; 8.Nc3 Qf5 9.Bc4 Nc6 10.Nd5 Nd5 11.Bd5 Qg6 12.d4 Bh3 13.Ne1 ed4=) 8...e4 9.Nfd2 Qf5 10.c4 Qg5 11.Kh1 Bf5 12.Nc3 a5 13.Qc2 Qg6=; 7...c6 8.d4 (8.c4 a5 9.d4 e4 10.Nfd2 ab4 11.ab4 Ra1 12.Ba1 d5 13.c5 b5=; 8.d3 a5 9.c4 ab4 10.ab4 Ra1 11.Ba1 Qf5 12.d4 e4 13.Nfd2 Qg5=+) 8...e4 9.Nfd2 d5 10.c4 Qf5 11.Nc3 Qg6 12.Kh1 Be6 13.f3 ef3=) 8.c4 (8.d4 e4 9.Nfd2 Qg6 10.Kh1 Nbd7 11.c4 a5 12.Nc3 ab4 13.ab4 Ra1=; 8.Nc3 Be6 9.Bd3 Qg4 10.h3 Qh5 11.Ne2 Qh6 12.Ng3 a5 13.Qe2 g6=) 8...Qg6 (8...e4 9.Nd4 Qg6 10.f3 c5 11.Nb5 Bh3 12.Rf2 Rc8 13.d4 Nbd7=) 9.Nc3 Bh3 (9...a5 10.b5 Be6 11.d4 Nbd7 12.Kh1 Rfe8 13.d5 Bg4=) 10.Nh4 (10.Ne1 a5= 11.d4 ab4 12.ab4 Ra1 13.Qa1 ed4=) 10...Qg5=+ 11.f4 Qh4 12.gh3 c6 13.Qc2 (13.Kg2 Nbd7=) 13...Qh3 14.Rf3 Qh6 15.Rg3 (better is 15.Qf5!? Nbd7 16.Raf1=+) 15...ef4–/+ 16.ef4 Re8 (16...Qf4 17.Qd3–/+) 17.Rf1 Nbd7 18.Nd1 g6 (18...Bf8 19.Ne3 Ne4 20.Rg2+=) 19.Ne3=+ Bd8 20.Bf3 Bb6 21.Qc3 Kf8 22.Kg2 d5 23.c5 (23.cd5!? cd5 24.Ng4 (< 24.Nd5 Nd5 25.Bd5 Re2 26.Kf3 Rh2–+) 24...Ng4 25.Bg4=) 23...Bd8=+ 24.Bg4 (better is 24.Qd4=+) 24...Re7?? (24...Ne4 25.Qh8 Ke7=+) 25.Bd7= Rd7 26.Qd4 Qg7 27.f5 Nh5 28.Qg7 Ng7 29.fg6 (29...hg6 30.Rg6+/-) 1–0. Trokenheim,Marek (1800) – Faust,Dieter (1745), FICGS, 2008.

6.Be2 Qd7 7.Nc3 A) 7...Qf5 8.Nb5 (8.0-0 Be6 9.Bd3 Qg4 10.h3 Qh5 11.Ne2 Qh6 12.Ng3 a5 13.Qe2 g6=) 8...Ne8 9.0-0 Qg6 10.c4 Be6 11.d4 e4 12.Ne1 c6 13.Nc3 d5=; B) 7...e4 8.Ng5 (8.Nd4 c5 9.Nb3 Nc6 10.b5 Nd8 11.f3 ef3 12.Bf3 d5 13.0-0 Ne6=) 8...d5 9.f3 h6 10.Nh3 a5 11.b5 ef3 12.Bf3 c6 13.bc6 Nc6=.

6.Be2 Nbd7 7.c4 c5 8.b5 (8.bc5 Nc5 9.d4 ed4 10.Nd4 Qb6=) 8...Nb6 (8...e4!? 9.Ng1 Ne5–/+) 9.Nc3 Bd7 10.0-0 e4 11.Ne1 (11.Ng5 Be6+=) 11...d5 12.cd5 Nbd5 13.Nd5 Nd5 14.Qb3 Be6 15.Bc4 a6 16.a4 ab5 17.ab5 Ra1 18.Ba1 Qd6 19.d3 f5 20.g3 Bf6 21.Bf6 Rf6 22.Ng2 ed3 (22...Nb6 23.Be6 Qe6= (23...Re6? 24.Nf4 Kf7 25.Rc1+-)) 23.Qd3+/- Bf7?? (better is 23...Qe5+/-) 24.Rd1+- h6 25.Bd5 Bd5 26.Qd5 Qd5 27.Rd5 Rb6 28.Rc5 g6 29.Nf4 Kf7 30.Nd5 Rd6 31.Kg2 Ke6 32.Nf4 Kf6 33.b6! Kf7 34.Rc7 Kf6 35.Rb7 g5 36.Ne2 Rd2 37.Nd4 Ke5 38.Rb8 f4 39.gf4 gf4 40.Kf3 fe3 41.fe3 Rh2 42.b7 Rh3 43.Ke2 Rh2 44.Kd3 Rb2 45.Re8 (45.Re8 Kf6 46.b8Q Rb8 47.Rb8+-) 1–0. Fournier,Frederic (1960) – tober26, Active, 2011.

6.Be2 e4 7.Nd4 c5 8.Nb3 Be6 9.b5 a6 10.0-0 ab5 11.Bb5 d5 12.f3 Qc7 13.d3 ef3 14.Qf3 Ng4 15.g3 Nc6 16.N1d2 Bg5 17.Rfe1 Nce5 18.Be5 Ne5 19.Qe2 Bf6 20.d4 cd4 21.ed4 Nc4 22.a4 Rfc8 23.Ra2 Qb6 24.Qf2=+ Nd2 25.Qd2= Be7 26.Re2 Rc7 27.Rb2 Ba3 28.Rb1 Qd6 29.Rf1 Bb4 30.Qf4 Qf4 31.Rf4 Rcc8 32.Kg2 h6 33.h3 Rc3 34.g4 Rc7 35.Rf3= b6 36.Rff2 Rc3 37.Nc1 Ra3 38.Rf3 Rf3 39.Kf3 Bc3 40.Ke3 Ra7 41.Kd3 Rc7 42.Na2+= Ba5 43.c3 g6 44.Re5 g5 45.Nb4+= Bb4 46.cb4 Rc1 47.Re3 Rb1 48.Kc3 Kf8 49.Bd3+/- Ra1 50.Bc2 Rh1 51.a5 Ke7 52.ab6 Kd8 53.Bd3 Rc1 54.Kb3 Kc8 55.Ka4 Kb7 56.Ka5 Ra1 57.Kb5 Ra6 58.Kc5 Ra3 59.b5 Rc3 60.Kb4 Rc8 61.Rf3 Rc1 62.Rf6 Rd1 63.Kc3 Rc1 64.Kd2 Rh1 65.Rf3 Ra1 66.Kc3 Re1 67.Kb4 Rc1 68.Kb3 Rd1 69.Kc2 Rh1 70.Bf1 Rh2 71.Kd3 Kb6+= 72.Ke3 Ka5 73.Rf6= Kb4 74.b6 Ka5 75.Rh6+/- Kb6 76.Rf6 Ka5= 77.Kd3 Kb4 78.Ke3 Kc3=+ 79.Rh6 Rd2 80.Rh5 Rd4 81.Rg5 Rd1 82.Bg2 d4–/+ 83.Kf3? d3–+ 84.h4 d2 85.Kg3 Rg1 86.Rc5 Kd4 87.Rc4 Kc4 (88.h5 d1Q 89.Kh2 Qd4 90.Bf1 Rf1 91.h6 Qf2 92.Kh3 Rh1) 0–1. Fritz 6 – Fritz 8, 2003.

6.Be2 Bf5 7.c4 Nbd7 8.Nc3 c6 9.0-0 d5 10.Qb3 Be6 11.Ng5 Qe8 12.Ne6 fe6 13.Rae1 Qg6 14.f4 Nh5? (better is 14...ef4!? 15.ef4 Bd6=) 15.fe5 Bh4 16.cd5 (better is 16.Rd1!? Nb6 17.cd5 ed5 18.Na4+-) 16...Be1+= 17.de6 (better is 17.Re1!? Ne5 18.de6 Nf3 19.Bf3 Rf3 20.d3+=) 17...Rf1–/+ 18.Kf1 Ne5 19.Ke1 Kf8?? (better is 19...Qg2 20.Kd1 Qh2–/+) 20.Na4+- Qb1 (better is 20...Ng4 21.b5 Nhf6 22.bc6 b6+-) 21.Kf2?? (better is 21.Qd1 Qf5 22.Be5 Qe5 23.Bh5+-) 21...Qf5 22.Ke1 Ke7 (22...Qb1 23.Qd1 Qf5 24.Be5 Qe5 25.Bh5 Qe6+-) 23.Qc3 Qb1 24.Bc1 Qf5? 25.Bb2 Ng4 26.h3 Qf2 27.Kd1+- Ngf6 28.g4?? Ng3+= 29.Qc5 Ke8+= 30.Qc4 Qe2 31.Qe2+/- Ne2 32.Ke2 Ke7 33.d3 b6 34.Nc3 Ke6 35.g5 Nd7 36.Ne4 Ne5 37.a4 a5–/+ 38.b5 cb5 39.ab5 Rd8 40.d4 Nc4–/+ 41.Ba1 Rd5 42.Nc3 Rg5 43.d5 Kf7 44.e4 Rg1 45.Kd3?? Ne5 46.Kd4 Nf3 47.Ke3 Ra1 0–1. Zak,Pawel – Borowicz,Miroslaw (1930), Polanica Zdroj op–C Poland, 2006.

6.Be2 Bg4 7.0-0 Nbd7 8.d4 ed4 9.Nd4 Be2 10.Qe2 Re8 11.Nd2 d5 12.Rfd1 c6 13.c4+= dc4 14.Nc4 Nd5 15.Nf5+/- N7f6 16.Ng7 Kg7 17.e4 Nf4? 18.Qg4+- Ng6 19.Rd8 Rad8 20.h4 Kf8 21.Bf6 Bf6 22.Rd1 Rd1+/- 23.Qd1 Re4 24.Nd6?? Rd4–/+ 25.Qh5 Rd6–+ 26.Qc5 Be7 27.Qa7–/+ Rd7 28.Qb8 Kg7–/+ 29.g3 b5 30.Kg2 Rd6–/+ 31.Qa7 h5 32.a4 ba4 33.Qa4 Rf6 34.b5 cb5 35.Qb5 Re6 36.Qc4 Bf6–/+ 37.f4 Re7 38.Qb5 Kh6 39.Kf3 Re6 40.Kg2 Ne7 41.Qc4 Nf5–+ 42.Qd3 Ne3 43.Kh3 Ng4 44.Qd2 Kg6 45.Qc2? Kh6 46.Qd2 Kg6 47.Qd3 Kg7 48.Qf5? Kh6–+ 49.Qb5 Re7 50.Qf1 ½–½. labackna – yulio, ChessWorld.net, 2006.

6.Be2 Bg4 7.c4 Nbd7 8.d3 e4 9.de4 Ne4 10.Nbd2 Bf6 11.Bf6 Ndf6 12.0-0 Re8 13.Qc2 Nd2 14.Qd2 Ne4 15.Qc2 Qf6 16.Rac1 h6 17.Nd4 Be2 18.Ne2 a6 19.f3 Ng5 20.e4 Ne6 21.Rfd1 a5 22.Qc3 Qg5 23.Rd5 ab4 24.ab4 Qe7 25.Ra1 Qh4 26.Rda5 Ra5 27.Ra5 Rb8 28.g3 Qd8 29.Nd4 Ra8 30.Ne6 fe6 31.Qa3 Rc8 32.f4 c6 33.Kg2 d5 34.ed5 ed5 35.cd5 b6 36.Ra7 Qd5 37.Kf2 c5 38.bc5 bc5 39.Qc3+= Qd4 40.Qd4 cd4 41.Rd7 Rc2 42.Kf3 Rh2 ½–½. Fournier,Frederic (1885) – Warnault,Pierre (1710), Open Cappelle la Grande FRA, 2009.

6.Be2 Bg4 7.d3 Nc6 8.0-0 Rb8 9.Nbd2 a6 10.h3 Bh5 11.c4 d5? (11...Qd7!?=) 12.cd5 Qd5 13.Qb3 Qb3 14.Nb3 Bf3 (better is 14...Rfd8!?=) 15.Bf3+/- (15.gf3?! Rfd8=) 15...Bd6 16.Rac1 Ne7 17.d4 (17.Rfd1 Ng6+=) 17...ed4 (better is 17...e4!? 18.Be2 Ned5=) 18.Bd4+/- (18.ed4?! c6=) 18...Nd7 19.Nc5 Nc5?? (19...Bc5 20.bc5 Rfd8 21.Rfd1+/-) 20.Bc5 (better is 20.bc5 Bc5 21.Rc5+-) 20...Bc5+= 21.Rc5 c6 22.Re5 Ng6 23.Re4 Rfe8 (23...Rbd8 24.Rd1=) 24.Re8 Re8 25.Rd1 Ne5 26.Kf1 Nf3 27.gf3 g6 28.Kg2 h5 (28...Kf8!?=) 29.Rd7+= Rb8 30.a4 Kf8 31.e4 Ke8 32.Rc7 Kd8? (better is 32...a5 33.ba5 Ra8 34.Rb7 Ra5+/-) 33.Rf7+- Ke8 34.Rh7 Rd8 35.Rb7 Rd4 36.Rb6 1–0. Fournier,Frederic (1945) – megan (1785), Echecs21 (2/0), 2003.

6.Be2 h6 7.0-0= Nc6 8.d3 Be6 9.b5 Nh7?? 10.bc6+- bc6 11.Nbd2 Rb8 12.Rb1 Bf6? 13.Ba1 c5 14.c4 a6 15.Nb3 Ng5 16.Na5 Nf3 17.Bf3 Bg5 18.Nc6 Qf6 19.Nb8 Qg6 20.Nc6 Bd7 21.Rb7 Bc6 22.Bc6 Qf6 23.Rc7 Qf5 24.Be4 Qf6 25.Qf3 Qd8 26.Rb7 Qa5 27.Rfb1 Qa3 28.R7b3 Qa5 29.Bc3 Qc7 30.Rb7 Qd8 31.Ra1 Bf6 32.Ba5 Qa5 33.Ra5 Bg5 34.Ra6 Bf6 35.Raa7 g6 36.Qf6 Kh7 37.Bg6 Kg8 38.Bf7 (38…Rf7 39.Qf7 Kh8 40.Qf8#) 1–0. Onkel_Luis – sally, ICC, 2003.

6.Be2 h6 7.c4 Nbd7 8.d3 Nh7 9.0-0 f5 10.Nbd2 Ndf6 11.Qc2 f4 12.ef4 ef4 13.Ne4 Bf5 14.Nf6 Bf6 15.Rfe1 Bb2 16.Qb2 Ng5 17.Qd4 Bg4? (better is 17...Ne6!? 18.Qc3 c5+=) 18.Qd5+- Kh8? (better is 18...Ne6 19.Qb7 Qf6+-) 19.Ng5 (19.Qb7?! Rb8 20.Qa7 Nf3 21.Bf3 Bf3 22.gf3 Qg5 23.Kh1 Qh5+/-) 19…c5 1–0. Fournier,Frederic (1795) – ana2, Active, 2008.

6.Nd4 Bg4 7.Be2 Be2 8.Qe2 0-0 9.Qb5 b6 10.f3 c5 11.Nf5 ef3 12.Qf1 d5 13.Qf3 Nbd7 14.0-0 Kh8 15.bc5 bc5+= 16.Qg3 Rg8 17.Nc3 Qf8 18.Rab1 Bd8 19.Ba1 Bb6 20.Nd6 c4+= 21.Na4 Rb8 22.Nb6 Rb6 23.Rb6 ab6 24.Bb2 Qe7 25.d3 cd3 26.cd3 Qe6 27.Nf5 Ne8+= 28.Nd4 Qe5 29.Qh3 Nef6+= 30.Rf2 Re8 31.Nf5 Qe6 32.Qh4 Rg8 33.Qg5 Ne8 34.Nd4 Qg6 35.Qg6 fg6 36.Ne6 Nef6 37.Rc2 Re8 38.Rc6 Kg8 39.Bf6 Nf6 40.Rb6 Ra8 41.Rb7 Re8 42.Nc5 Re3 43.h3 g5 44.a4 d4 45.a5 Re5 46.Nb3 g4?! 47.a6 g3 48.Kf1 Rf5 49.Ke1 Rf2 50.a7 Ra2 51.Rb8 Kf7 52.a8Q Ra8 53.Ra8 g5 54.Ra5 Kg6 55.Nd4 h5 56.Ke2 h4 57.Nf3 Nh7 58.d4 Kf6 59.Kd3 Kg6 60.Ne5 Kf5 61.Ng4 Kg6 62.Ra8 Kg7 63.Ra7 Kh8 64.Ke4 Kg8 1–0. COMP – COMP, 2001.

6.Ng5 d5 7.d3 h6–/+ 8.Nh3 a5 9.Nf4 ab4–/+ 10.de4 de4 11.Qd8 Kd8 12.Bc4 Rf8 13.0-0 ba3 14.Na3 c6 15.Rfd1 Bd7 16.Bb3 b5 17.Ne2 Kc8 18.h3 c5 19.c3 Bc6 20.Kf1 Nbd7 21.Rdb1 Kd8 22.c4 b4 23.Nb5 Ra1 24.Ra1 Bb7 25.Ng3 g6 26.Bc2 Kc8 27.Ke1 Rd8 28.Rd1 h5 29.Na7 Kb8 30.Nb5 h4 31.Nf1 Ne8 32.Nd2 f5 33.Nb3 Ba8 34.Na5 g5 35.Kf1 Kc8 36.Ba4–/+ Ndf6 37.Ra1 Bf8 38.Na7 Kc7–+ 39.Be5 Kb6 40.Bb5 ½–½. aschellen (1935) – Miras (1875), internet, 2006.

6.Ng5 h6 7.Nh3 –/+.

7.Nc3 c5 8.Nb3 Nc6 =+.

7.Bc4 c5 8.bc5 dc5 9.Nb3 Bg4 10.f3 ef3 11.gf3 Bh3 12.Rg1 Nh5 13.Qe2= Nc6 14.f4 Nf6 15.Nc3 a6 16.Nd5 Kh8 17.Rg7 Kg7+= 18.Qh5 Nd4 19.Qg5 Kh8+= 20.Ne7 Qe7 21.Nd4 Rg8 22.Nf5 Rg5 23.Ne7 Rg1 24.Ke2 Rg2 25.Kf3 Kg7 26.Nd5 b5 27.Bf6 Kh6 28.Be2 Ra7 29.Rh1 Rd7 30.e4 Rg6 31.Bg5 Kg7 32.Kg3 Be6 33.Bh5 Rg5 34.fg5 Bd5 35.ed5 Rd5 36.h4 Rd2 37.Rf1 Rc2 38.Rf7 Kg8 39.Rf3 c4 40.g6 Rc1 41.Kf4 c3? 42.Kg5 hg6 43.Bg6 Kg7 44.Rf7 Kg8 45.Rc7 Rd1 46.Rc3 Kf8 47.h5 Ke7 48.Re3 Kd6 49.Rd3 Rd3 50.Bd3 Ke7 51.Kg6 Kf8 52.Bb5 ab5 53.Kh7 Kf7 1–0. COMP – COMP, 2002.

7.Bc4 d5 8.Be2 a5 9.b5 c5 10.bc6 Nc6 11.0-0= Be6 12.f4 Qd7 13.Ne6= fe6 14.Nc3 Rac8 15.Na4 Qc7 16.c4 Rf7 17.Qb3 Rd8 18.cd5 ed5 19.Rac1 Qb8 20.Nc5 Bc5 21.Rc5 Qa7 22.Qb5 Ne8 23.Rd5+- Nd6 24.Qc5 Qc5+/- 25.Rc5 Re7 26.Bc3 Ra8 27.f5 a4? 28.f6 Re6 29.fg7 h6 30.Rh5 Rg6 31.Rf6 Rf6 32.Bf6 Kh7 33.d4 Kg6 34.g4 Rg8 35.d5 Kf6 36.Rh6 Ke7 37.dc6 bc6 38.Rg6 c5 39.h4 c4 40.h5 c3 41.Bd1 Nf7 42.Ba4 Ne5+/- 43.Rb6 Rg7 44.Bd1 Ng4 45.Rb7 Kf6= 46.Rg7 Kg7 47.Bc2 Ne3 48.Be4 Nc4 49.a4+= Kh6 50.Kf2 Kh5 51.Ke2 Kg5 52.Bd3 Ne5 53.a5 Nc6= 54.a6 Kf4 55.Bc2 Ke5 56.Ba4 Kd6 57.Kd1 Kc5 58.Bc6 Kc6 59.Kc2 Kb6 60.a7 Ka7 61.Kd1 Ka6 62.Kc2 Ka5 ½–½. COMP – COMP, 2002.

7.d3 c5 8.Nb3 cb4 9.ab4 d5 10.de4 Ne4 11.Bd3 Bb4–/+ 12.Kf1 Nc6 13.c3 Bd6 14.Na3 Qh4 15.Be4 Qe4 16.f3? Qe3 17.c4 Bf5 18.Nc1 Rfe8 19.Nb5 Bc5 (20.Nd4 Nd4 21.Bd4 Bd4–+) 0–1. juanpacio (1660) – Miras (1930), internet, 2006.

7.d3 c5 8.bc5 dc5 9.Nb3 Bg4 10.Be2 Be2 11.Qe2 ed3 12.cd3 Qd5 13.N1d2 Qg2 14.Qf3 Qf3 15.Nf3 Nbd7 16.Ne5 Ne5 17.Be5 Rad8 18.Ke2 Nd5 19.Rac1 Rfe8 20.d4? (better is 20.Rhg1 f6 21.Bg3–/+) 20...f6–+ 21.Bg3 (21.Bf6 Nf6 22.dc5 Rd5–+) 21...cd4 22.Nd4 Ba3 23.Ra1 (better is 23.Rc2 Bb4 24.Kd3–+) 23...Bb2 24.Ra7 Bd4 25.Rb7 Be5 26.Be5 Re5 27.Rg1 (27.Ra1–+) 27...Nc3 28.Kf3 Rf5 29.Kg2 Rg5 30.Kh1 Rd1 31.Rd1 Nd1 32.Rb8 Kf7 33.Rb7 Kg6 (33...Kg6 34.h3 Nf2 35.Kh2 Rh5–+) 0–1. Tucek,Richard (1685) – Tunega,Frantisek, CZE–ch KT20 email, 2006.

7.Be2 c5 8.Nb3 a6 9.0-0 Nc6 10.f3 cb4=+ 11.ab4 ef3 12.Bf3 Nb4 13.Nc3 a5 14.Nd4 d5 15.Ba3 Re8 16.Qb1 Bg4 17.Qb3 Bf3 18.Rf3 Bf8 19.Raf1 Re5 20.Nf5 Ra6 21.Qb2 Ree6 22.Nd4 Re8 23.Rh3 Qd7–/+ 24.Nce2 Rb6 25.c3=+ Bc5 ½–½. michaelbuss – Agove, ChessWorld.net, 2007.

7.Be2 c5 8.Nb3 Nc6 9.0-0 cb4 10.ab4 Nb4 11.f3 d5–/+ 12.Nc3 Bd7 13.Nd4 a6 14.Qe1 Nc6 15.Nb3 Be6 16.Na4 ef3 17.Rf3 Qc7 18.Bf6 Bf6 19.Rf6 gf6 20.Qf2 f5 21.Bd3 Kh8 22.Bf5 Rg8 23.Bd3 Rg7 24.Nc3 Rag8 25.Bf1 Ne5 26.Qf4 Rg4 27.Qf6–/+ R8g7 28.g3 Kg8 29.Nd4 R7g6 30.Qf2 Rh4 31.Nce2 Rhh6 32.Nf4 Ng4 33.Qe1 Rh2 34.Ng6 hg6 35.Bg2 Rh5 36.c3 Nf6 37.Qf2 Bf5 38.Qf4 Qf4 39.ef4 Be4 40.Nf3 Kg7 41.Ne5 g5 42.g4 Rh4 43.d3 Bg2 44.Kg2 Ng4 45.Nf3 Ne3 46.Kf2 Nc2 47.Ra2 Rf4–+ 48.Kg3 Ne3 49.Ng5 Rf1 50.Nh3 Nd1 51.c4 dc4 52.dc4 Nc3 53.Rb2 Rb1 54.Rc2 Rb3 55.Kf4 Ne2 56.Re2 Rh3 57.Ke5 b6 58.Kd6 Rc3 59.Rg2 Kf8 60.Kd5 Rb3 61.Ra2 a5 62.Kd6 Rb1 63.Ra3 Rb4 64.c5 bc5 65.Ra5 Rc4 66.Ra1 Kg7 67.Rg1 Kf6 68.Rf1 Kg6 69.Kd5 Rc2 70.Rg1 Kf6 71.Rf1 Kg7 72.Rg1 Kf8 73.Rf1 c4 74.Kd4 Rd2 75.Kc4 Rd7 76.Kc5 Re7 77.Kd4 Re6 78.Rg1 f6 79.Rg3 Kf7 80.Re3 Rd6 81.Ke4 Re6 82.Kd4= Ra6 ½–½. pcmvr (1960) – maximusus (2125), 3rd ChessHere Championship–A, 2006.

7.Be2 c5 8.Nb3 Be6 9.b5 =+.

6.Be2 Qd7 7.0-0 a6 8.c4 0-0 9.Nc3 Nc6 10.Rc1 Rab8 11.d4+= ed4 12.Nd4 Be2 13.Nce2 Nd4 14.Nd4 Rfe8 15.Qe2 c5= 16.Nb3 Qa4=+ 17.Qc2 cb4 18.ab4 Qb4 19.Rfd1 a5 20.Rd4 a4=+ 21.Nd2 Ra8 22.Bc3 Qc5 23.Rb1 Reb8 24.Rb5 Qc6 25.Rh4 a3 26.Nb3 h6 27.Rf5 d5–+ 28.Ba1 Rc8 29.Qe2 Ne4 30.Qg4? Qg6 31.Qg6 fg6 32.Re4 de4 33.Re5 Rd8 34.Nd4 Bf6 35.Re4 Rac8 36.g3 Rc4 37.Kg2 b5! (38.Re6 Rc1–+) 0–1. westman – appieh58, playchess.de, 2001.

6.Be2 Bf3 7.Bf3 c6 8.c4 0-0 9.d3 Nbd7 10.Nd2 Qc7 11.0-0 Ne8 12.g3 Bf6 13.Qc2 Rc8 14.Bg2 Nb6 15.Ne4 d5 16.Nf6 Nf6 17.cd5 Nfd5 18.Rac1 Qe7 19.e4 Nf6 20.Qc5 Qc5 21.Rc5 Nbd7 22.Rcc1 Rfe8 23.Rfd1 a6 24.Bh3 Rcd8 25.Rd2 Nb6 26.Rcd1 Rd6 27.f3 Red8?? 28.Be5+- Rd3?? 29.Rd3 Rd3 30.Rd3 Kf8 31.Bf6 gf6 32.Rd8 Kg7 33.Rb8 Nc4 34.Rb7 Na3 35.Rb6 Nc2 36.Ra6 Nb4 37.Rb6 Nd3 38.Rc6 Ne5 39.Rc7 Nf3 40.Kg2 Ng5 41.Bf5 (41.Bf5 Kg8 42.Kf2+-) 1–0. Fournier,Frederic – enano (1745), Active, 2008.

7.0-0 a5 =.

7.0-0 c6 8.c4 Nbd7 9.d3 Bf3 10.Bf3 (worse is 10.gf3 d5+=) 10...d5 11.cd5 cd5 12.Nd2 Bd6 13.g3 Re8 14.Rc1 e4 (better is 14...a5!? 15.b5 Qe7+=) 15.de4+/- de4 16.Be4 Ne4 (16...Re4 17.Ne4 Combination; 16...Ne4 17.Ne4 Combination) 17.Ne4+/- Be5 (17...Bb4 18.Qf3 Bf8 19.Rfd1+/-) 18.Be5 Re5 19.Qd4 Qe7 (19...Re7 20.Rfd1 Qf8 21.Nd6+/-) 20.Rc7+- Re4 21.Qd7 Qd7 22.Rd7 b6 23.Rc1 Ree8 (23...a5 24.ba5 ba5 25.Rcc7+-) 24.Rcc7 Rf8 (24...Rec8 25.Rb7 Rcb8 26.Rf7 Rb7 27.Rb7+-) 25.Ra7 Ra7 26.Ra7 Rb8 27.b5 g6 28.a4 Kg7 29.Kg2 Kf6 30.Kf3 h5 31.h4 Ke6 32.Ke4 f5 33.Kf4 Kf6 34.Ra6 Rb7 35.a5 Kf7 36.Rb6 (36.Rb6 Rc7 37.a6+-) 1–0. Fournier,Frederic (1875) – Clement,Didier, Club, 2012.

7.0-0 Nc6 8.d3 e4 9.de4 Ne4 10.Nbd2 d5 11.Nd4 Be2 12.Qe2 Nd4 13.Bd4 Bd6? (better is 13...Nd2 14.Qd2 Bd6=) 14.Ne4+/- de4 15.Qg4 g6 16.Qe4 c6 17.c4 Re8 18.Qf3 Be5 19.Rfd1 Bd4 20.Rd4 Qe7 21.Rad1 Rad8 22.Qf4 b6 23.Rd8 Rd8 24.Rd8 Qd8 25.Qd4 Qe7 ½–½. Feng,Jason – Mori,Roberto, RN–2009–0-00240, 2009.

7.0-0 Nbd7 =.

7.c4 Nbd7 8.0-0 a5 9.b5 Re8 10.Nc3 Bf5 11.d4 c6 12.bc6 bc6 13.Bd3 Bd3 14.Qd3 Qb6 15.Rfb1 Rab8 16.de5 Ne5 17.Ne5 de5 18.Ne4 Rbd8 19.Nf6 Bf6 20.Qe4 Rd6 (20...Re6 21.Qg4 Qc5 22.a4=) 21.f4 (21.Bd4! Qa6 22.Bc5+=) 21...Qc7 22.Rd1 Qd7 23.Rd6 Qd6 24.Rf1 Re7 25.fe5 Be5 26.Be5 Qe5 27.Qc6 Qe3 28.Kh1 Re8 29.a4 Qe2 30.Rg1 h6 31.Qb5 Re5 32.Qb8 Kh7 33.Qc7 Re7 34.Qc6 (34.Qa5 Qc4 35.Qb5 Qe4=) 34...Kg8 (34...Re4!? 35.c5 Qc2+=) 35.h3 Re5 36.Rb1 Kh7 37.Qc7 ½–½. Fournier,Frederic – COMP PowerChess 6.0, France (FRA), 2000.

7.c4 Nbd7 8.Nc3 e4 9.Nd4 Ne5 10.0-0 Qd7 11.f3= ef3 12.Nf3 Bf3 13.Bf3 Nc4=+ 14.Qc2 c6 15.Rab1 d5 16.Ne2 Ne4?? 17.Be4+- Nb2? 18.Bh7 Kh8 19.Bf5 Qd6 20.Qb2 Bf6 21.Qc2 Be5 22.g3 g6 23.Bh3 Kg7 24.Rf3 Rh8 25.Bg2 Rh6 26.Rbf1 f5 27.d4 Bf6 28.Nf4 Rah8 29.h4 g5 30.hg5 Bg5 31.Qf5 Qe7 32.Qg4 Rg6 33.Nh5 Kh6 34.Nf4 Bf4?? 35.Qf4+- Kg7 36.Qf7 Qf7 37.Rf7 Kh6 38.R7f6 Rhg8 39.R1f3 Kg5 40.Rg6 Rg6 41.Bh3 Rg7 42.Rf4 Re7 43.Kf2 Rh7 44.Kg2 Re7 45.Kf3 Rh7 46.Rf5 Kg6 47.Kg4 Rh3 48.Rf7?? Rg3= 49.Kg3 Kf7 50.Kf4 Ke6 51.e4 de4=+ 52.Ke4 b5 53.Ke3 Kd5 54.Kd3 a6 55.Ke3 Kc4 56.Ke4 Kb3 57.Ke5 Ka3 58.Kd6 Kb4 59.Kc6 a5 60.d5 a4 61.d6 a3 62.d7 a2 63.d8Q a1Q 64.Qd6 Ka5 65.Qc7= Kb4 66.Qd6 (better is 66.Qe7 Kc4 67.Qc5 Kd3 68.Qb5 Ke4 69.Qe2 Kd4 70.Qg4 Ke3 71.Qg5 Ke2 72.Qh5 Ke3 73.Qe8 Kf4 74.Qf7 Ke4 75.Qd5 Kf4 76.Qd2 Ke4 77.Qg2 Kf5 78.Qf3 Ke5 79.Qe3 Kf5 80.Qh3 Kf4 81.Qh6 Kf3 82.Qf8 Ke4 83.Qe7 Kf5 84.Qd7 Ke4 85.Qh7 Ke3 86.Qe7 Kf4 87.Qh4 Kf5 88.Qf2 Ke6 89.Qe2 Kf6 90.Qd2=) ½–½. Trip,R – Been,K, Barneveld, 2000.

7.c4 Nbd7 8.d3 a5 =.

7.c4 Nbd7 8.d4 ed4 9.Nd4 Be2 10.Qe2 Re8 11.Nd2 c5 12.N4f3 cb4 13.ab4 Qb6 14.b5 d5= 15.0-0 dc4 16.Qc4 Rac8 17.Qa4 Ra8 18.Nc4 Qc7 19.Rac1 Nc5 20.Qc2+= h6 21.Be5+/- Qd7 22.Nd4 Ne6 23.Qb2 Nd4+= 24.Bd4 Rec8 25.Rfd1 Qg4 26.Ne5 Qh5 27.h3 Bd6 28.Nf3 Be7 29.Qb1 a6 30.Rc8+/- Rc8 31.ba6 ba6 32.Qb7 Re8 33.Qa6 Nh7 34.Rc1 Ng5 35.Ng5 Qg5 36.Qc6 Rd8+/- 37.Qe4 Bf6 38.h4 Qh4+= 39.Qh4 Bh4 ½–½. Trip,R – Versluis,R, Barneveld, 2000.

7.c4 e4 8.Nd4 Be2 9.Qe2 =.

7.c4 0-0 8.0-0 e4 9.Ng5 Be2 10.Qe2 =.

7.c4 0-0 8.0-0 Bf3 9.Bf3 c6 10.Nc3 a6 11.Qb3 Rc8 12.Rac1 Rb8 13.d3 a5 14.b5 Nc5 15.Qc2 cb5 16.Nb5+/- Ne6 17.a4 Ng5 18.Be2 Nd7 19.f4 ef4 20.Rf4 Bf6 21.Nd6 ½–½. Serowy,Reinhold – Kocik,Genowefa, Brandenburg Seniors op, 2003.

7.c4 0-0 8.Nc3 c6 9.Qc2 Rc8 10.h3 Bf3 11.gf3 d5 12.Rd1 a5 13.c5 Qc7 14.Bf1 ab4 15.ab4 b6 16.cb6 Qb6 17.b5 cb5 18.Qd3 d4 19.Nb5 Rfe8 20.Ba3 Ba3–/+ 21.Qa3 Rc5 22.Qa4 Qc6 23.Bd3? Qf3 24.Rh2 Qc6 25.Kf1? Rb8 26.Rb1 e4 27.ed4 Rc1 28.Kg2 ed3 (29.f3 Rb1–+) 0–1. Serowy,Reinhold – Kude,Klaus Peter (1760), Brandenburg–ch Seniors, 2003.

7.c4 c6 8.0-0 0-0 9.d3 Re8 10.Nbd2 Qc7 11.e4 Nh5 12.h3 Bf3 13.Nf3 Nf4 14.Re1 Nf6 15.Bf1 Bf8 16.Ng5 (16.d4 Ng6+=) 16...h6 17.Nf3 Rad8 18.g3 Ng6 19.Qc2 d5 (19...c5 20.Reb1+=) 20.ed5 (better is 20.cd5!? Rc8 21.dc6 Qc6 22.Qc6 Rc6 23.d4+-) 20...cd5= 21.Rac1 d4 22.c5 Nd5 23.Re2 Qd7 24.Rce1 f6 25.Bg2 Kh8? 26.Re4 Ngf4? 27.gf4+- Nf4 28.Qd1 Nh3 29.Bh3 Qh3 30.Rh4 Qe6 31.Kg2 g5 32.Rhe4 Bg7 33.Nd4! Qd7 34.Qe2 Rg8 35.Nf3 Qf5? 36.Nh2 Qg6 37.d4 f5 38.de5 fe4+= 39.Qe4 Qe4 40.Re4 Rd2 41.Bd4 Rf8 42.Nf3 Ra2+= 43.e6 Re8 44.Bg7 Kg7 45.Nd4 Kf6 46.Re3 Rd2 47.Nb5 Re6 48.Re6 Ke6 49.Na7 Kd7 50.Nb5 Kc6 51.Na7 Kd7 52.Kf3?? h5 53.Nb5 Ra2 54.Kg3 Kc6 55.Nd6? Ra3 56.Kg2 Rb3 57.Ne4 g4 58.Nf6 Rb4 59.Nh5 Kc5 60.Ng3 Rf4 61.Ne2 Rf3 62.Ng1 Ra3 63.Ne2 b5 64.Nc1 Rc3 65.Ne2 Rc2 66.Nf4 b4 67.Nd3 Kc4 68.Ne1 Re2 69.Kf1 Re1! 70.Ke1 Kc3 71.Kd1 Kb2 72.Kd2 b3 73.Kd1 Ka2 74.Kc1 b2 (74...b2 75.Kd1 b1Q 76.Ke2 Qe4 77.Kf1 Qh1 78.Ke2 Qf3 79.Kd2 Qf2 80.Kc3 Qc5 81.Kd2 g3 82.Ke2 g2 83.Kf3 g1Q 84.Kf4 Qge3 85.Kg4 Qcg5) 0–1. Fournier,Frederic (1985) – agustinto (2020), Echecs21 (5/4), 2003.

7.d3 0-0 8.Nbd2 h6 9.0-0 c6 10.c4 Qc7 11.h3 Bh5 12.Nh4 Bg6 13.Bg4?? (better is 13.Ng6 fg6 14.d4+=) 13...Bd3–/+ 14.Re1 Qd8 (14...Ng4 15.Qg4 f5 16.Qh5–/+) 15.Bd7 (15.Nf5!?+=) 15...Nd7–/+ 16.Nhf3 f5 17.Qb3 e4 18.Nd4 Qc8 19.c5 d5 20.Qc3 Bf6 21.Qb3 Ne5 22.a4 Qd7 23.Bc3 Kh8 24.Qb2 Rfe8 25.f4 Ng6 26.Ne2 (26.Red1 b6–/+) 26...Bh4 (26...Bc3!? 27.Qc3 Be2 28.Re2 d4 29.Qd4 Qd4 30.ed4 Nf4–+) 27.g3–/+ Bd8 ½–½. Guerrero Olmos (1685) – Colchero Truniger, ESP–ch U14 Padron, 2008. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6 4.e3 Be7 5.Nf3 Bg4)

6.c4 Bf5 7.d4 Bb1 8.Rb1= c6 9.de5+/- de5 10.Be5 Qd1 11.Rd1 Na6 12.Nf3 Rfd8 13.Be2 Rd1 14.Bd1 b6 15.0-0 c5 16.b5 Nb8 17.Bc2 a6 18.Bb8 Rb8 19.ba6 Ra8 20.Ne5 Ra6+/- 21.Nc6 Kf8 22.a4 Ne4?? 23.Be4+- Ra4 24.Rb1 Ke8 25.Ne7 Ke7 26.Bd5 Rb4 27.Ra1 b5 28.cb5 Rb5 29.Ra7 Kd6 30.Bf7 Rb4 31.Ba2 c4 32.Bc4! Rc4 33.Rg7 Rc7 34.Rc7 Kc7 35.Kf1 Kd6 36.Ke2 Ke5 37.Kf3 h5 38.g4 h4 39.e4 Kf6 40.Kf4 Ke6 41.g5 Kf7 42.Kg4 Kg6 43.Kh4 Kf7 44.f4 Kg6 45.f5 Kg7 46.e5 Kf7 47.Kg4 Kf8 48.h4 Kg7 49.h5 Kh8 50.h6 Kh7 51.e6 Kh8 52.e7 Kh7 53.Kh5 Kh8 54.e8Q (54...Kh7 55.g6) 1–0. thedesertfox (1900) – mminaev (1795), net–chess.com, 2005.

6.Bc4 a6 7.Nc3 Nc6 8.Nge2 d5 9.Bb3 Na7 10.Ng3 c6 11.0-0 e4 12.Qe2 Bd6 13.Qe1 Be6 14.Nce2 b5 15.f3 Qd7?? (better is 15...ef3 16.Rf3 Ne4=) 16.Bf6+- gf6 17.Nh5 Be5 18.c3?? (18.f4 Ba1 19.Qg3 Bg4 20.Ra1 Qf5 21.Qg4 Qg4 22.hg4 f5 23.gf5 Rfd8+-) 18...Kh8? (better is 18...f5+/-) 19.f4+- Bc3 (19...Bc7 20.Qh4 Bd8 21.Nf6 Bf5 22.Nd7 Bh4 23.Nf8 Rf8+-) 20.dc3 Nc8 (20...Qe7 21.Qh4 Rg8+-) 21.Nd4 (worse is 21.Nf6 Qe7 22.Qh4 Bf5+-) 21...Nd6 22.Nf6 Qd8 (22...Qc8 23.Qh4 Bf5+-) 23.Qh4 (23.Qh4 Kg7 24.Qg5 Kh8 25.Qh6 Qf6 26.Qf6 Kg8 27.Qg5 Kh8 28.Qe5 Kg8 29.Qd6+-) 1–0. pokermike – erikerik, gameknot.com, 2010.

6.d3 a5 7.b5 Be6 8.Nf3 c6 9.a4 Qc7 10.c4 Nbd7 11.Ng5 Bf5 12.e4 Bg6 13.Nf3 d5–/+ 14.cd5 cd5 (15.Nh4 Bh5=+). Deveraux (2720) – Psilocybe (2805), ICC, 2001.

6.d3 a5 7.b5 Be6 8.Nf3 c6 9.d4 e4 10.Nfd2 d5 11.c4 dc4–/+ 12.Nc3 cb5 13.Nb5 Qd7 14.Qa4 Rc8 15.Bc4 Bc4–/+ 16.Nc4 Bb4 17.ab4 Rc4 18.Nc3 b5! 19.Qa2 Rb4 20.0-0 Na6 21.Rfc1 a4–+ 22.g4 Rb3 23.Qb1 Qe7 24.Qc2 Rd8 25.Qb3 ab3 26.Ra6 Nd7 27.Ra5 Qh4 28.Rb5 Qh3 29.g5 Nf8 30.Rb3 Ng6 31.Rb8 Rb8 32.Nd5 Nh4 33.Ne7 Kh8 34.Ng6 hg6 35.Rc8 Rc8 36.Ba3 Nf3# 0–1. Deveraux (2675) – Psilocybe (2850), ICC, 2001.

6.d3 Nbd7 7.d4 =+.

6.Be2 =+.

6.Bb5 c6 7.Bc4 d5 =+.

6.Nc3 0-0 7.Nf3 =+.

6.Nc3 Nbd7 7.Bc4 c6 8.Nge2 0-0 9.d4 d5–/+ 10.Bd3 Re8?? 11.de5?? Ne4 12.Ne4 Be4 13.0-0 Bf8 14.f4 Re6 15.Ng3 f5 16.ef6 Nf6 17.Ne4 Ne4+/- 18.c4 Rg6 19.cd5 Qh4?? 20.Rf3 Kh8?? 21.dc6 Rc6 22.Bc2 Rd8 23.Bd4 Re6 24.Be4 Re4 25.Rc1 h6 26.Qe1?? Qe1–/+ 27.Re1 Rdd4 28.ed4 Re1 29.Kf2 Re6 30.Rc3 g6 31.Rc2 Bg7 32.Kf3? Kg8 (33.d5 Re7=+; better is 32...Bd4 33.Rc8 Kg7–+) 0–1. Redzepagic,Sadedin – Palit,Vikram, Box Hill op, 2001.

6.Qf3 Bc2 7.Qb7 Be4 8.Qb5 Bc6 9.Qe2 Nbd7 10.Nf3 0-0 11.d4 Nb6 12.Nbd2 e4=+ 13.Ng5 h6–/+ 14.h4 d5 15.Nh3 Nfd7 16.Rc1 Bb7 17.Nf4 Bh4 18.Qg4 Bg5 19.f3 Nf6 20.Qg3 Re8 21.Bb5 c6 22.Bc6=+ Bc6 23.Rc6 Rc8 24.Rc8 Qc8 25.Ke2? Qc2–+ 26.Bc1 Nc4 27.Qe1 Bf4 28.ef4 e3 (29.Rh5 ed2 30.Re5 Re5 31.de5 dc1Q 32.Kf1 Ne3 33.Kg1 Qg2#) 0–1. Dessing,Bastiaan – Van der Zon,Stef, NED–ch U12 op, 2000.

6.Nf3 0-0 =+.

5.Bb5 Nc6 6.Be2 a6 7.b5 ab5 8.Bb5 Bd7 9.a4 Be7–/+ 10.Be2 Nb4 11.Nf3 0-0 12.Ba3 c5 13.Nc3 Bg4 14.0-0 d5 15.d3 Bd6 16.Na2? Na2–+ 17.Ra2 Ra6 18.Bb2=+ Rb6 19.Ne5 Be5 20.Be5+/- Be2 21.Qe2 Nd7 22.Bg3 Nf6 23.c4 d4 24.ed4 Re8 25.Qc2 Qd4= 26.Kh1 Re5?? 27.f4?? Rf5 28.Bf2 Qe4?? 29.Re1 Qc6? 30.Qd2 h6 31.Kg1 Ng4 32.Bg3 Qc7 33.Re8 Kh7 34.h3 (34…Nf6 35.Re5+/-; 34.Qd1 Nf6 35.Re5 Qd7+/-) 1–0. OutOfBounce – TheSuperiorMind, Live Game Caissa's Web, 2005.

5.Nc3 Nbd7 6.Bc4 c6=+ 7.Bb3 d5 8.h3 Bd6 9.Nf3 0-0 10.Nh4 Be6 11.Qe2 b5 12.g4 Ne8 13.Ng2 c5 14.Nb5 Be7= 15.bc5 Bc5 16.Nc3 Nc7 17.f3 f6 18.h4 Qe7 19.Na4 Bd6 20.h5 Rab8 21.e4 Rb5 22.Nc3 Rb3 23.cb3 d4 24.Nb5 Nc5?? 25.Nd6+- Nb3 26.Rb1 Qd6+/- 27.0-0 Qc5 28.d3 Qa5 29.Rfd1 Bd7 30.Qc2 Nc5 31.Rdc1 N7a6 32.Qd1 Ba4 33.Qe2 Bb5 34.Kh2?? Nd3 35.Rc2?? Nb2–+ 36.Qb5 Qb5 37.Rbb2 Qd3 38.Ne1 Qe3 39.Re2 Qf4 40.Kg2 Nc5 41.Rb5 Ne6 42.Nd3 Qg5 43.Rb7 Qh4 44.Ra7 Nf4 45.Nf4 ef4 46.Rd2 Qg3 47.Kf1 Qf3 48.Rf2 Qh1 49.Ke2 Qe4 (50.Kf1 Rc8 51.Rg7 Kg7 52.h6 Kg6 53.Rd2 Rc1 54.Rd1 Qf3 55.Kg1 Rd1 56.Kh2 Rh1) 0–1. kingsknight59 – dugmak, ChessWorld.net, 2005.

5.Nc3 Nbd7 6.Nf3 Be7 7.Nh4 Bg6 (7...Be6 8.Bd3=+) 8.Ng6= hg6 9.Bc4 (9.d4 c6=) 9...Kf8 (9...c6=) 10.Rg1 (10.d4!?+=) 10...c6 (10...Rh2 11.Qf3 c6 12.0-0-0=+) 11.Qe2 (11.Rh1!?=) 11...d5-/+ 12.g4?? (better 12.Bb3-/+) 12...g5?? (better 12...dc4 13.g5 Nd5-+) 13.Kd1 0-1. xuanet (2730) – opperwezen, lichess.org, 2016.

5.Nc3 Be7 6.Nf3 0-0 7.Bc4 d5 8.Bb3= Re8 9.Ne5+= Bd6 10.d4 Nbd7 11.Nd5 Nd5 12.Bd5+/- Ne5 13.de5+- Be5 14.Be5 c6 15.Bf7 Kf7+/- 16.f4 Qd1 17.Rd1 Bc2+/- 18.Rd7 Ke6? 19.Rb7+- Red8 20.0-0 Rd7 21.f5! Ke7 22.Rd7 Kd7 23.Bg7 Rg8 24.f6 (24…Be4 25.Rf4+-) 1–0. Ventimiglia,Charles – Haro,Enrique, IECG, 1998.

5.Nc3 g6 6.d4 ed4 7.Nb5 de3 8.Nc7 Qc7 9.Bf6 ef2 (9...Bc2?? 10.Bb5 Nc6 11.Qc2 ef2 12.Qf2+-) 10.Kf2 Rg8 11.Bc4?? (better is 11.Bb5 Nc6 12.Nf3=) 11...Qc4–+ 12.Nf3 Qc2 (12...Bc2?! 13.Re1 Kd7 14.Ne5 Kc7 15.Nc4 Bd1 16.Rad1=+) 13.Qc2 Bc2 14.Rac1 Ba4 (better is 14...Bf5–+) 15.Rc7 Bd7 16.Re1 Be6 17.Rc8 Kd7 18.Rec1 d5?? (better is 18...Bd5 19.Nd4 Bc6 20.Rd8 Kc7–+) 19.Rd8# 1–0. Trkn – modman (1680), ICC, 2004.

5.c4 a5!? +=.

5.c4 Bb1 6.Qb1 a6 7.d4 ed4 8.Bd4 Be7 9.Be2 Nc6 10.Bc3 Qd7 11.Nf3 Qe6 12.0-0 Ne5 13.Ne5 de5 14.Qb2 e4 15.Rfd1 0-0 16.h3 Rad8 17.Qc2 Rd1 18.Rd1 Rd8 19.Rd8 Bd8 20.Qd2 Be7 21.Qd4 b6 22.Qd2 Qd6 (22...c5!?=) 23.Qd6+/- cd6 24.Bd4 Bd8 25.Kf1 d5 (25...g6!?+/-) 26.cd5+- Nd5 27.Ba6 Kf8 28.Ke2 g6 29.Kd2 (29.Bb7 Nf6+-) 29...Ke7 30.Kc2 Bc7 (30...f5!?+-) 31.Kb3 Bh2 (31...f5+-) 32.Bc4 (32.Bc4 Kd6 33.Bd5 Kd5 34.Bb6+-) 1–0. ziggyblitz (2420) – smoothoperator (2065), net–chess.com, 2013.

5.c4 b6 6.Nf3 Be7 7.d3 0-0 8.Be2 e4 9.de4 Ne4?? (9...Be4 10.Nc3 Bb7 11.0-0+=) 10.Nbd2 (better is 10.Qd5 Bf6 11.Bd4+- (11.Qa8 Bb2 12.Ra2 Bc3 13.Kf1 a5+=; 11.Qf5?! Bb2 12.Ra2 Bc3 13.Kf1 Re8+/-)) 10...d5 11.cd5 Qd5 12.Ne4 Be4 13.0-0 Qe6 14.Nd4 Qg6 15.Bf3 (15.f3 Bf5 16.Nf5 Qf5+=) 15...Na6 (better is 15...c5!? 16.Be4 Qe4=) 16.Be4 Qe4 17.Qc2 Qg6 18.Qg6+/- fg6 19.Ne6 Rf7 20.Rac1 Bf6 21.Bf6+/- gf6 22.Rfd1 c5 23.bc5 bc5 24.Nc5 Nc5 25.Rc5 Rb8 26.a4 Rb4 27.a5 Ra4 28.g3 Rb7 29.Rdc1 Kg7? 30.Rc7 Rc7 31.Rc7 Kh6 32.Ra7 Kg5 33.a6 Kg4 34.Kg2 h6 35.h3 Kf5 36.Kf3 Ra3 37.Ra8 h5 38.a7 g5 39.g4 hg4 40.hg4 Ke6 41.Re8 Kd7 42.a8Q (42.a8Q Ra8 43.Ra8+-) 1–0. Fournier,Frederic – tranquilo, Active, 2009.

5.c4 c6 6.Nf3 Nbd7 7.Be2 Be7 8.0-0 0-0 9.d3 h6 10.Nc3 Bh7 11.Qb3 Qc7 12.Rfd1 a5 13.h3 ab4 14.ab4 Nb6 15.Rac1 Ra7 (15...Rfe8 16.d4 e4 17.Nd2=) 16.d4 e4 17.Nd2 d5? (better 17...Rfa8!?=) 18.cd5+/- Nfd5? (better 18...Qd7 19.dc6 bc6+/-) 19.Nd5+- Nd5 20.Qd5!! Qb6 (20...cd5 21.Rc7 Pinning (21.Rc7 Deflection; 21.Rc7 Remove defender)) 21.Qd7 Bb4 (21...Qb4 22.Rc6! Bf5 23.Qf5 bc6 24.Nc4+-) 22.d5 Bd2 (22...c5 23.Bh5 Qd8 24.Bf7 Kh8 25.Qd8 Rd8 26.Be6+-) 23.Rd2 cd5 (23...Bg6 24.Bd4 Qa5 25.Rdd1+-) 24.Bd4 Qb4 (24...Qa5 25.Ba7 Bg6 26.Rd5 Qa7+-) 25.Ba7 Qd2 26.Rc8 Qb4 (26...Qe2?? 27.Rf8 Kf8 28.Qd8) 27.Bc5 Qb1 28.Kh2 (28.Kh2 Qh1 29.Kh1 Kh8 30.Rf8 Bg8 31.Qf7 Kh7 32.Rg8 d4 33.Qg7) 1-0. Pereira – Windings, internet, 2021.

5.c4 Nbd7 6.Nc3 a6 7.d4 ed4= 8.ed4 Be7 9.Bd3 Bd3= 10.Qd3 0-0 11.Nf3 c6 12.0-0 Re8. rommeltdf (1655) – lhoffman (1705), net–chess.com, 2002.

5.c4 Nbd7 6.Nc3 c6 7.h3 d5 8.cd5 cd5 9.Bb5 a6=+ 10.Ba4 b5 11.Bb3 Nb6 12.Qf3 Bd3=+ 13.e4 de4–+ 14.Qe3 Nbd5 15.Bd5 Nd5–+ 16.Nd5 Qd5 17.Ne2 Be2 18.Qe2–/+ Rd8 19.Bc3 f6 20.0-0 Bd6 21.Rfd1 Qd3 22.Qe3 0-0 23.Qd3 ed3–+ 24.f3 Bc7 25.Kf2 Bb6 26.Kg3 Rfe8 27.Re1 h5 28.Re4 Kf7 29.Rae1 g6 30.f4 ef4 31.Kf4 f5 32.Re8 Re8 33.Re8 Ke8 34.Ke5 Ke7 35.Bd4 Bc7 36.Kd5 Kd7 37.Be5 Bb6 38.Bd4 Bd8 39.Be5 g5 40.Kd4 Ke6 41.Bb8 Bf6=+ 42.Kd3 Be5 43.Be5 Ke5 44.Ke3 f4 45.Kf3 Kf5 46.g4? hg4–+ 47.hg4 Ke5 48.Ke2 Kd4 49.Kd1 Ke4 50.Ke2 f3 51.Kf2 Kf4 52.d4?! Kg4 53.d5 Kf5 54.Kf3 Ke5 55.Kg4 Kd5 56.Kg5 Kc4 57.Kf4 Kb3 58.Ke4 Ka3 59.Kd4 Kb4 0–1. rommeltdf (1925) – sgbrito (1875), net–chess.com, 2002.

5.c4 Nbd7 6.Nf3 Be7 7.d4 c6 8.Nh4 (8.de5 de5 9.Ne5 Ne5 10.Qd8 Rd8 11.Be5 c5+=) 8...Bg6 (8...Be6!?=+) 9.Ng6+= fg6 10.Be2 0-0 11.0-0 Ne4 12.f3 Ng5 13.h4 (13.de5!? de5 14.c5+/-) 13...Ne6 14.g3 Bh4 15.gh4 Qh4 16.Rf2 Ng5 (16...Qg5 17.Kf1 Qe3 18.de5 Ne5 19.Bc1= (19.Qd6 Nf3 20.Bf3 Rf3 21.Qe6 Qe6 22.Rf3 Qc4 23.Kg2 Rd8–+)) 17.Rh2 Nh3 18.Kf1 Qg3 19.Rg2 Qh4 20.Rg4?? (better is 20.Qe1 Qe4 21.Qg3+-) 0–1. maxum – bach3, Live Game Caissa's Web, 2004.

5.c4 Be7 (---> 4.e3 Be7 5.c4 Bf5).

5.c4 g6 6.Nf3 Bg7 7.d3 0-0 8.Be2 Nbd7 9.Nbd2 a6 10.0-0 c5 11.bc5 Nc5 12.Nb3 Na4 13.Qc2 Nb2 14.Qb2 Ng4 15.e4 Be6 16.h3 Nf6 17.Qc3 Qc7 18.Rfc1 Rac8 19.Qb4 Nd7 20.Nfd2 b5 (better is 20...f5+=) 21.cb5+/- ab5?? (better is 21...Qb7 22.d4 Rc1 23.Rc1 Bb3 24.Qd6 ab5 25.Nb3 ed4 26.Nd4 Qe4 27.Nb5 Qe2 28.Qd7 Be5+/-) 22.Rc7+- Rc7 1–0. Fournier,Frederic – nramos, Active, 2008.

5.Bc4 d5=+ 6.Bb3 Nbd7 7.c4 c6 8.Nf3 Bd6 9.0-0 0-0 10.Re1 Bg4 11.h3 Bh5 12.g4 Bg6 13.Nc3 h5 14.cd5= hg4 15.dc6 bc6 16.hg4= Ng4 17.Kf1? e4 18.Nd4?? Qh4 19.Qg4 Qg4 20.Nde2 Qh3 21.Kg1 Bh2 22.Kh1 Bh5 (23.Ng1 Bg1 24.Kg1 Bf3 25.Bf7 Rf7 26.Ne4 Qg2#; 22...Bg3 23.Kg1 Qh2 24.Kf1 Qf2#) 0–1. Diederich,Hauke – Dec,Paul, GER–ch U13 Oberhof, 1998.

5.d4 Nbd7 6.c4 c6 7.Nf3 e4 8.Qc2 d5 9.Nc3 Nb6 10.c5 Nc4 11.Bc4 dc4 12.Ne5 Qd5?? (better is 12...Be7+=) 13.Nd5+- 1–0. kamret (2215) – Richeck, GameColony.com, 2003.

5.d4 Nbd7 6.Nd2 ed4 7.Bd4 Qe7 8.Qf3+= Be4 9.Ne4+/- Ne4 10.Bc4 f6 11.Bd3 d5 12.0-0-0 c5 13.bc5 Ndc5 14.Bb5 Kf7 15.Qh5 g6 16.Qd5 Kg7 17.Nh3 Rd8 18.Qa2 a6= 19.Bc4 Na4 20.Rd3 b5 21.Bd5 Nec5 22.Rd2 Nb6?? 23.Bb2?? Qd6 24.Qa1?? Nd5–+ 25.Rd5 Qd5 26.Bf6 Kg8 27.Bd8 Qd8 28.Rd1 Nd7?? 29.Qa2+= Kg7 30.Qb2 Kh6 31.g4 Bg7 32.g5+/- Kh5?? 33.Qg7+- Qf8 34.Rd7 Qa3 35.Kd1 Rf8 36.Qh7 Kg4 37.Rd4 Kf3 38.Qb7# 1–0. marus2 – omaha, internet, 2001.

5.Be2 Be7 6.Nf3 (--> 5.Nf3 Be7 6.Be2).

5.Qf3 Bc2 6.Qb7 Nbd7 (6...Be4 7.Qb5 c6 8.Qa4=) 7.Qc6 Be4 8.Qc1 Be7 9.Nc3 a5 (9...Bb7 10.Nf3=+) 10.Nb5 (better is 10.Ne4!? Ne4 11.Qc6+=) 10...c5 11.Nc7?? (better is 11.f3 Bc6 12.bc5 dc5 13.Bc4=+) 11...Qc7–+ (12.f3 Bg6–+) 0–1. annmarie – funkster, Live Game Caissa's Web, 2004.

5.Qf3 Be4 6.Qe2 Bc2 7.Nc3 Be7 8.Qb5 Nbd7 9.Qb7 0-0 10.Rc1 Ba4?? (better is 10...Bb3=) 11.Na4+- 1–0. combijack (1735) – pantoja (1680), gameknot.com, 2009.

5.Nf3 a6 6.Bc4 Be7 7.0-0 0-0 8.d3 h6 9.e4 Bg4 10.Nbd2 Nbd7 11.h3+= Bh5 12.g4 Bg6= 13.Nh4 Bh7 14.Nf5 c5 15.Qf3 Nb6 16.Ne7 Qe7 17.bc5 Nc4? 18.Nc4+- dc5 19.Be5 Rfd8 20.Bf6 Qf6 21.Qf6 gf6 22.Nb6 Rab8 23.a4 Rd6 24.Rfb1 Rbd8 25.Nd5 f5 26.gf5 Bf5 27.Ne7 Kf8 28.Nf5 (28…Rg6 29.Kf1+-; 28.ef5?! Ke7 29.Rb7 Kf6+-) 1–0. Wall,Bill – MtBonell, Microsoft Gaming Zone, 1999.

5.Nf3 Nc6 6.d4 ed4 7.Nd4 Ne7? (7...Nd4 8.Bd4 Be7 9.Bd3 Bd3 10.cd3+=) 8.c4 (better is 8.Nf5 Nf5 9.Qf3+-) 8...Ng6?? (8...Bd7 9.Bd3+=) 9.Bd3 (better is 9.Nf5 Ne5 10.f4+-) 9...Bd3= 10.Qd3 d5 11.0-0 dc4 12.Qc4+/- Qd5 13.Qb5 Qd7? 14.Qd7?? Nd7 15.Nb5 0-0-0 16.Rc1 Kb8 17.Nc7+/- Rc8 18.Nd5 Rc1 19.Bc1 Bd6 20.Bb2 Re8 21.Nbc3 Be5 22.g3 Bc3 23.Bc3 Nde5 24.f4 Nf3? 25.Kf2 Nd2?? 26.Bd2 Rd8 27.e4 Nf8 28.f5 f6 29.Bf4 Ka8 30.Rc1 a6 31.Nc7 Ka7 32.b5 ab5 33.a4 ba4 34.Nb5 Kb6 35.Na3 Ka5 36.Bc7 Ka6 37.Bd8 Nd7 38.Rc7 Nb6 39.Ke3 Ka7 40.Be7 Kb8 41.Bd6 Ka7 42.Nb5 Ka6 43.Na3 Nc8?? 44.Bc5 Ka5 45.Rc8 Ka6 46.Ra8 1–0. slavisa11 – SirCharles, Live Game Caissa's Web, 2004.

5.Nf3 Nbd7 6.Nc3 c6 7.h3 h6 8.d3 Bh7 9.Qd2 d5 10.Be2 Bd6 11.g4 (11.0-0!?=) 11...Qe7 Black intends e4 12.Rg1 e4 13.de4 de4 14.Nd4 Ng4?? (better 14...Ne5=+) 15.Bg4 0-0-0 (15...Ne5+-) 16.Nf5 Bc5 1-0. TwelveTeen (2680) - opperwezen (2790), lichess.org, 2016. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.e3 Bf5)

5.Nf3 Nbd7 6.c4 c6 7.Be2 Rc8 8.0-0 Be7 9.Nc3 0-0= 10.d4 ed4 11.Qd4 c5 12.Qf4+/- cb4? 13.ab4+- Be6 14.Ra7 Ne5 15.Ne5 de5 16.Qe5 Qb6 17.Rfa1 Bd6 18.Qa5 Qb4 19.Qb4 Bb4 20.Rb7 Bc3 21.Bc3 Bc4 22.Bc4 Rc4 23.Bf6 gf6 24.h3 f5 25.g3 (25…Kg7 26.Raa7+-) 1–0. Algra – Wagner, corr NLD jub, 1991.

5.Nf3 Nbd7 6.c4 Be7 7.Nc3 c6 8.Be2 0-0 9.0-0 Re8 10.d4 e4 11.Nh4 Bg6 12.Ng6+/- hg6 13.Qc2 d5 14.cd5 cd5 15.Bb5 a6+= 16.Ba4 b5 17.Bb3 Nb6 18.Rac1 Rc8 19.Qe2 Nc4 20.Bc4 bc4 21.f3 Bf8 22.fe4 Ne4 23.Qf3 Rc7 24.Ne4 Re4 25.Qg3 Bd6–/+ 26.Qf3 Qh4 27.g3 Qg5 28.Rc3 Rg4 29.Kg2 Re7 30.Bc1 Rge4 31.Bd2 Rb7?? 32.Bc1?? Bb8?? 33.Rc2?? Bd6?? 34.Rc3?? Rd7?? 35.Rc4+/- Qd8 36.Rc2 ½–½. Gross,Wilhelm – Merten,Rainer, GER theme m Germany, 1988.

5.Nf3 Nbd7 6.c4 Be7 7.d3 0-0 8.Nbd2 c5 9.b5 d5 (9...a6 10.ba6 Ra6 11.Be2=) 10.Be2 (10.Ne5 Ne5 11.Be5 dc4 12.Nc4 Qd7+=) 10...dc4 (10...e4 11.Nh4 Be6 12.0-0=) 11.dc4 (11.Nc4 e4 12.de4 Be4= (worse is 12...Ne4 13.Qd5 g6 14.Qb7+/-)) 11...e4+= 12.Ng5 h6 13.Nge4? (better is 13.g4 Bg6 14.Nh3+=) 13...Ne4–+ 14.0-0 Nd2 15.Qd2 Nf6 16.Qc3 Qc7 17.Rad1 Rad8 18.g3 Bh3 19.Rfe1 Rd1 20.Rd1 Rd8 21.Bf1?? (better is 21.Rd8 Qd8 22.Bf3–+) 21…Rd1 (21...Rd1 22.Qd3 Qd8 23.Bd4 Rd3 24.Bh3 cd4 25.Bf1 Rd1 26.e4 Qa5 27.Kg2 Qe1 28.h3 Qf1 29.Kf3 g5 30.c5 Rd3) 0–1. Fournier,Frederic – proudpequot, ICC, 2005.

5.Nf3 Nbd7 6.d4 ed4 7.Nd4 Bg6 8.c4 Be7 9.Nc3 0-0 10.Be2 c5 11.Nf3 Ne5 12.0-0 Nf3 (12...Qb6 13.Qb3+=) 13.Bf3+/- Qc7 14.Nd5 Nd5 15.Qd5 Rab8 16.Rfd1 b6 17.g3 (17.b5 a6+/-) 17...Rbd8 18.Rac1 Qd7 19.e4 Qe6 20.Re1 Qc8 (20...Bf6 21.Bf6 Qf6 22.Bg2+=) 21.h4+/- h6 22.h5 Bh7 23.Rcd1 Qe6 24.Qd3 (24.b5 Bf6 25.Qe6 fe6 26.Bf6 Rf6+/-) 24...Kh8 (24...cb4 25.ab4 Rc8 26.Rc1+=) 25.Qe3 (25.b5 Bf6 26.Bf6 Qf6+=) 25...Bf6 (25...cb4!? 26.ab4 Rc8+=) 26.Bf6+= Qf6 27.Rd5 Rd7? (27...Rfe8 28.b5+=) 28.Red1 (28.bc5 Re8 29.cb6 ab6+-) 28...Rfd8 (better 28...Re8!?+/-) 29.e5+- Qe6 30.ed6 Rd6?? (better 30...Qf6 31.bc5 bc5 32.Rc5 Bc2+-) 31.Qe6 Rd5 (31...fe6 32.Rd6 Rf8 33.bc5 bc5 34.Bg2+-) 32.Rd5 (32.cd5?! fe6 33.de6 Rd1 34.Bd1 Kg8+/-; worse 32.Bd5 fe6 33.Bf3 Rd1 34.Bd1 Bd3=+) 32...Rf8 (32...fe6 33.Rd8 Bg8+-) 33.Qe7 Kg8 34.Rd8 Rd8 (34...Bf5 35.Qf8 Kh7 36.Qg8) 35.Qd8 1-0. FeegLood (2565) - BlitzKID100 (1910), lichess.org, 2015.

5.Nf3 Bg4 6.Be2 Ne4 7.d3 Bf3?? (better is 7...Nf6+=) 8.Bf3+- (8.gf3?! Nf6+=) 8...Nf6 9.0-0?? (better is 9.Bb7!? Nbd7 10.Ba8 Qa8 11.0-0+-) 9...Nc6 (9...c6 10.c4+/-) 10.c4 Rb8 11.Bc6 bc6 12.Nd2 d5 (12...a5 13.Qa4+/-) 13.Qe2 (13.Be5 a5 14.ba5 Nd7+-) 13...dc4 (13...Qe7 14.f4 ef4 15.Rf4+/-) 14.dc4 (14.Nc4 c5+-) 14...Be7 (14...Qe7!?+/-) 15.Rfd1 0-0 16.Be5 Qd7 17.Nf3 Qg4 18.Qc2 Qg6 19.Qg6 fg6 20.Bc7 Rbe8 (20...Rb7 21.Bd6+-) 21.Bg3 (21.Ne5 Ne4 22.Nc6 Bf6 23.Na7 Ba1 24.Ra1 Rf2+-) 21...c5 22.b5 Nh5 23.Rd2 Ng3 24.hg3 (24.fg3?! Bf6 25.Rad1 Re3+-) 24...Rd8 25.Rad1 Rd2 26.Rd2 Rb8 (26...Kf7+-) 27.Rd7 Bf6 28.Ra7 Rd8 (28...g5 29.a4+-) 29.e4 (29.a4 Rb8+-) 29...h6 (29...g5 30.b6 Rb8 31.b7+-) 30.e5 Bg5 (30...Rd1 31.Kh2 Bd8+-) 31.Ng5 hg5 32.b6 Rb8 33.b7 (better is 33.e6 Rb6 34.Ra8 Kh7 35.e7 Rb1 36.Kh2+-) 33...Kh7 (33...Kf7+-) 34.f4 (better is 34.e6 Kg8+-) 34...gf4 35.e6 Kg8 36.a4 Kf8 37.a5 (better is 37.Ra8 Ke7 38.Rb8 g5+-) 37...Ke7 38.a6 Ke6 39.Ra8 Ra8 40.ba8Q Ke5 41.Qd5 Kf6 42.gf4 Ke7 43.a7 1–0. slavisa99 – SirCharles, Live Game Caissa's Web, 2004.

6.c4 Nbd7 7.Nc3 a6 8.d4 ed4 9.Nd4 Bg6 10.Bd3 Ne5 11.Bg6 hg6 12.Qe2 c5 13.Nf3 0-0 14.Rd1 cb4 15.ab4 Nc6 16.Ba3 Qb6 17.0-0 Nb4 18.Rb1 a5 19.Qd2 Qc5 20.Rfc1 Qc4 21.Bb4 ab4 22.Ne2 Qa6 23.Rb4 Rab8 24.Rbc4 b5 25.Rc6 Exerts pressure on the isolated pawn 25...Rb6 26.Ned4 Ne4 27.Qd3 Nc5 28.Rb6 Qb6 29.Qb5 Qb5 30.Nb5 Rb8 31.Nbd4 Rb7 32.g3 Bf6 33.Rd1 g5 34.Nf5 g4 35.Ne1 Bc3 36.Ng2 Ne4 37.Nf4 Be5 38.Nd3 Kh7 39.Ne5 de5 40.Nh4 Rb2 41.Rf1 Nd2 42.Rd1 g6 43.Ng2? Nf3–+ 44.Kf1 Nh2 45.Kg1 Nf3 46.Kf1 Nh2 47.Kg1 ½–½. Rush,Bradley – Werner,Guenter, ZL–2011–0-00916, 2011.

6.d4 ed4 (6...e4 7.Nfd2+=) 7.ed4 0-0 8.Bd3 Bd3 9.Qd3 Nc6 10.0-0 Nd5 (10...d5 11.Nbd2=) 11.Nbd2 (11.c4 Nf4 12.Qe4 Ng6+=) 11...Bf6 12.c4 Nf4 13.Qc2 (13.Qe4 Ne6+=) 13...Re8 (13...Ne2 14.Kh1 Ned4 15.Bd4 Nd4 16.Nd4 Bd4 17.Rae1+=) 14.Rfe1 (14.Ne4 d5 15.cd5 Nd5=) 14...Qd7 (14...Ne2!? 15.Kf1 A) 15...Bd4? 16.Re2 Re2 17.Ke2 (17.Nd4?! Nd4 18.Bd4 Re6+/-; 17.Bd4?! Nd4 18.Nd4 Re7+/-) 17...Bb2 18.Qb2+-; B) 15...Ned4 16.Nd4 Bd4 17.Re8 Qe8+=) 15.Ne4 Bd8 (15...Qg4 16.Ng3=) 16.Qd2 (16.d5!? Qg4 17.Ng3+/-) 16...Qg4+= 17.Ng3 Re1 (better is 17...Bf6!?+=) 18.Re1+/- (18.Ne1?! Bg5 19.Qd1 Qd1 20.Rd1 d5+=; worse is 18.Qe1 Bh4+=) 18...Bg5 (18...Bf6!?+/-) 19.Ng5+- Qg5 20.Bc1 Ne6? (better is 20...Nh3 21.gh3 Qd2 22.Bd2 Nd4+-) 21.Qg5 Ng5 22.Bg5 Nd4 23.Bc1 g6 (23...Kf8 24.Bb2 Ne6 25.Nf5+-) 24.Ne4 f5 (24...Ne6 25.Nf6 Kg7 26.Bb2+-) 25.Nf6 Kg7 26.Nd5 c5 (26...c6 27.Nc7 Rc8 28.Ne8 Re8 29.Re8+-) 27.Bb2 (better is 27.Re7 Kg8 28.Bh6+-) 27...Kh6 (27...Kf8 28.Nf6 Kf7 29.Nh7+-) 28.Bd4 (28.Re7!? b5 29.Bc1 g5+-) 28...cd4 29.Rd1 Re8 (29...Rc8 30.Rd4 b5 31.Ne3+-) 30.g3 Re4 31.Nc7 d3 32.Rd3 Rc4 33.Nb5 a6 34.Nd6 Rc1 35.Kg2 f4 (35...Rc7+-) 36.Nb7 fg3 37.hg3 1–0. Fournier,Frederic (1645) – Perea,Juan Luis (1660), ChessOK.com, 2013.

6.Be2 0-0 7.d3 Nbd7 8.Nbd2 Re8 9.0-0 b5 10.d4 ed4 11.Nd4+/- Bg6 12.Bb5 a6 13.Be2 Nb6 14.c4 Qd7 15.b5 ab5 16.Bf3 bc4+= 17.Bc6 Qd8 18.Ba8 Qa8 19.a4 Nfd5? 20.Nb5 Bd3= 21.Re1 Rb8 22.e4 Nf4 23.g3 Ne6+= 24.Bc3 Nd7 25.Qg4 Ne5 26.Be5 de5 27.Rec1 c6 28.Na3 Nd4 29.Kg2. Gross,Wilhelm – Merten,Rainer, GER theme m Germany, 1988.

6.Be2 Nbd7 7.0-0 0-0 8.c4 c6 9.Qb3 Be6 10.Qc2 Ne8 11.d4+= ed4 12.Nd4 Nef6 13.Nd2 Ne5 14.Rad1 Bg4 15.N2f3 Nf3 16.gf3 Bh5 17.Kh1 Bg6 18.Bd3 Qc7 19.Rg1 Bd3 20.Qd3 Rfe8 21.Nf5+- g6 22.Qc3 Bd8 23.Rd6 Re6 24.Re6 fe6 25.Rd1?? ef5=+ (26.Rd8 Qd8 (< 26...Rd8 27.Qf6 Rd1 28.Kg2+/-) 27.Qf6 Qf6 28.Bf6 b5–/+) 0–1. Gross,Wilhelm – Merten,Rainer, GER theme m Germany, 1988.

6.Be2 e4 7.Nd4 Bg6 8.0-0 d5 9.f4+= c5? 10.bc5+/- Bc5 11.f5+- Bd4 12.Bd4 Nc6 13.fg6 hg6 14.Bf6 gf6 15.Nc3 f5 16.Qb1 Rb8 17.Qe1 Qd7 18.Qg3 Rc8 19.Rab1 b6 20.Rb5 Ne7 21.Rd5! Nd5 22.Bb5 Rc6 23.Qe5 Kd8 24.Qh8 Kc7 25.Qe5 Kc8 26.Nd5 Qe6 27.Ne7 Kd7 28.Nc6 Qe5 29.Ne5 Ke7 30.Nc6 Kd6 31.Na7 Ke7 32.Nc8 Kf6 33.Nb6 Ke6 34.Bc4 Ke7 35.a4 f6 36.a5 Kd8 37.a6 Kc7 38.a7 (38…Kc6 39.a8Q Kb6 40.Rb1 Kc7 41.Rb7 Kd6 42.Qd8 Ke5 43.Qd5#) 1–0. pierre (2100) – dodobonito, internet, 2006.

6.Be2 h6 7.c4 b6 (7...0-0 8.Nc3=) 8.Nh4 Be6 9.Nf3 Bg4 (9...0-0 10.0-0=) 10.h3 Bf3 (10...Bf5 11.d4 e4 12.Nfd2=) 11.Bf3+= 0-0?? 12.Ba8+- c6 13.Bc6 Nc6 14.0-0 d5 15.cd5 Qd5 16.Qf3 Qf3 17.gf3 Nd7 18.Kg2 Bh4 19.Re1 f5 20.Nc3 Rf6 21.f4 Rg6 22.Kf3 e4 23.Ke2 Rg2 24.Rf1 Nf6 25.Nd5?? Nd5–/+ 26.Rac1 Nce7 27.Rc2 a6 28.b5 ab5 29.Rcc1 b4 30.Bd4 ba3 31.Ra1 Nb4 32.Ra3 Nc2 33.Ra8 Kf7 34.Ra7 Nd4 35.ed4 Kf6 36.Rb7 Nd5 37.Rb6 Kf7 38.Rb7 Ke6 39.Rb5 Kd6 40.d3 Nf4 41.Kd2 Nd5 42.Rd5 Kd5 43.de4 fe4 44.Kc3 Rf2 (45.Rf2 Bf2–+) 0–1. Slavisa2 – CharlieChess, Live Game Caissa's Web, 2004.

6.Be2 h6 7.d3 Nc6 8.c4 a6 9.Nbd2 b5 (9...0-0!?=) 10.cb5+/- ab5 11.0-0 (11.d4 0-0 12.0-0 Qb8 13.de5 Ne5 14.Ne5 de5 15.Be5 Nd7+/-) 11...0-0 (11...Qb8!?=) 12.d4+/- e4 13.Nh4 Bh7 14.Bb5 Na7 15.Be2 Nd5 16.Qb3 c6 17.g3 Bh4 18.gh4 Qh4 19.Kh1 Nf6 20.f4 Bf5 21.Rg1 Ng4 (21...Bg4 22.Qd1 Be2 23.Qe2=) 22.Rg2 (22.Bg4!? Bg4 23.d5+/-) 22...d5= 23.Nf1 Nf2 24.Kg1 Ng4 25.Qd1 h5 26.Bg4 Bg4 27.Qe1 Qh3?? (better is 27...Qf6=) 28.Qg3?? (better is 28.Rg3 Qh4 29.h3+-) 28…Qg3= (28...Qg3 29.Ng3 Nb5=) 0–1. Fournier,Frederic – Puka_puka2, Partie evaluee, 2m + 1s, 2007.

5.Qc1 Nc6 6.Be2 =+.

5.Qc1 Be7 6.c4 (6.Be2 Bd7=+) 6...Nbd7 (6...0-0 7.Be2=+) 7.d3 (7.d4 ed4 8.Bd4 0-0=+) 7...a5 8.Nc3 c6 (8...0-0 9.Be2=+) 9.Nge2 (9.Be2 Be2 10.Nge2 d5=+) 9...0-0 10.h3 (10.f4 ab4 11.ab4 Ra1 12.Ba1 d5–/+) 10...Be6–/+ 11.Ng3 d5 12.c5 Ne8 (12...Re8 13.Be2–/+) 13.Be2=+ f5 14.0-0 f4 15.ef4 ef4 16.Nh1 Bf6 17.Qd2= Be5 18.d4 Bc7 19.f3 Qg5 20.Nf2 Rf6 21.Ng4= Bg4 22.fg4 Nf8 23.Bf3 Re6 24.b5+= Rd8 25.b6 Bb8 26.Rae1 Nf6 27.Re6 Ne6 28.Re1 Re8 29.Nd1 Qh4 30.Qf2 Qh6 31.Bc3+= Qg6 32.Bb2 Ne4= 33.Qc2 N6g5 34.h4 Ng3 35.Re8 Qe8 36.Bc3 Nf3 37.gf3 Qe7 38.h5 Qh4 39.Nf2 Qe7 40.Kg2 a4 41.Qd2 Qe3 42.Nd1+= Qd2 43.Bd2+/- Kf7 44.Kf2 g6+= 45.hg6 Kg6 46.Nc3 h5 47.gh5 Kh5 48.Na4 Nf5 49.Bc3 Ne3 50.Nb2 Kg5 1–0. Amor Alcaide,M (2120) – Duran Gutierrez,JL (2010), Barbera del Valles op, 1997.

5.Be2 Qd7 6.Bg4 Ng4 7.d4 e4 (7...a5 8.h3 Nh6 9.de5 de5 10.Qf3 ab4 11.Qb7=) 8.h3 (8.d5 Qf5 9.Nh3 Ne5=) 8...Nf6 9.d5 Be7 10.c4 (10.Ne2 c6=) 10...0-0 (10...a5 11.Nd2=) 11.Ne2 c6 (11...a5 12.0-0=) 12.0-0 (12.Nbc3 Re8+=) 12...Qf5 (12...a5 13.Ng3 ab4 14.ab4=) 13.Ng3 Qg5 (better 13...Qg6!?+=) 14.Bf6+- Qf6 15.Nd2 Qc3? (15...Qg6 16.Nde4 f5 17.Nc3+-) 16.dc6 (better 16.Nde4!? Qb2+-) 16...Nc6 (16...bc6 17.Nde4 Qc4 18.Nd6+-) 17.Nge4+- Qe5 18.f4 Qf5 19.Qa4 White prepares the advance b5 (19.b5 Nd8+-) 19...Rad8 (19...a6 20.b5 ab5 21.Qb5 Qb5 22.cb5+-) 20.b5+- d5 (20...Nb8 21.Qa7 d5 22.cd5 Qd5 23.Rfd1+-) 21.g4 (21.bc6?! de4 22.Nb3 bc6 23.Qc6 Rc8+=) 21...Qg6 22.cd5 (22.bc6 de4 23.Nb3 Qh6 24.Qa7 Qh3–/+) 22...Rd5? (better 22...Nb8 23.Qb3 Nd7+-) 23.bc6 bc6 24.Rfc1 (better 24.Rac1 c5 25.Qa7+-) 24...Rd2 (24...Rc8 25.Qa7 Qe6+-) 25.Nd2 Qd3 (25...Qe6 26.Qa7 Rd8 27.Nc4+-) 26.Qa7 Qe3 (26...Bh4 27.Nf3 Bf6+-) 27.Qe3 (27.Qe3 Bd8 28.Rc6+-) 1–0. marus – 5267, internet, 2001.

5.Be2 Qd7 6.Bg4 Ng4 7.h3 Nf6 8.g4 h5 9.Nf3 hg4 10.Ne5 de5 11.Be5 Qd5 12.Bf6 Qh1 13.Ke2 Qf3 14.Kd3 Qd1 15.Bc3 gh3 16.a4 Qf1 17.Kd4 (17.Ke4 f5! 18.Kd5 c6 19.Ke5 Qg2 20.f3 Qf3 21.d3 Nd7 22.Ke6 Qd5) 17...Nc6 18.Kd5 (18.Ke4 f5! 19.Kf5 Qf2 20.Kg4 Rh4 21.Kg5 Be7 22.Bf6 Qf6) 18...0-0-0 19.Ke4 Qg2 20.Kf4 (20.Kf5 Qf3 21.Kg5 Rh5) 20...Rh4 21.Kf5 Rd5 (22.Be5 Re5#; 21...Qg6#) 0–1. TD_6 – Oort, ICS rated light match, 1998.

5.Be2 Be2 6.Qe2 Nc6 7.Nf3 Ne7 (7...e4 8.Nd4 Qd7 9.f3+=) 8.c4 Nf5 (8...e4!? 9.Ng5 d5=) 9.0-0 (9.e4 Ne7 10.0-0 Ng6+/-) 9...d5 10.c5 c6? 11.d4 e4= 12.Ne5 Qe7 13.Nd2 Nd7 14.Nd7 Qd7 15.a4 Be7 16.b5 cb5 17.Qb5 Qb5 18.ab5 0-0 19.Bc3 Rfc8 20.Nb3 b6 21.c6 Rc7 22.Ra4 Bg5 23.Bb4+= Be7 24.Be7 Ne7 25.Rfa1 Ng6? 26.Ra6+- Nh4 27.h3?? Ng6? 28.R1a2 Ne7 29.Nd2 Nc8 30.Nb1 h6 31.Nc3 g5?? 32.Nd5 Nd6 33.Nc7 Rc8 34.Ra7 Nc4 35.Nd5 Nd2 36.Ne7 Kg7 37.Nc8 Nc4 38.Nb6! Nb6 39.Rb7 Nc4 40.c7 Nd6 41.c8Q! Nc8 42.Rb8 Nd6 43.Rc2 Nf5 44.Rb7 Kg6 45.Rc6 Kg7 46.g4 Nd6 47.Rbb6 Ne8 48.Rb7 h5?? 49.Rcb6 hg4 50.hg4 Kf8 51.Kg2 Kg7 52.Rb8 Kf8 53.R6b7 f6 54.Rd7 f5 55.Rdd8 Kf7 56.Re8 (56...f4 57.Rec8 f3 58.Kg3 Ke6 59.Rc6 Ke7 60.Rb7 Kd8 61.Rcc7 Ke8 62.Rb8#) 1–0. Slavisa2 – CharlieChess, Live Game Caissa's Web, 2004.

5.Be2 Be2 6.Ne2 Nbd7 7.0-0 Be7 8.f4 ef4 9.Nf4 Ne5 10.Qe2 Qd7 11.c4 0-0-0 12.Nc3 Qg4 13.Qg4 Nfg4 14.Ncd5 Bf8 15.Nh5 (better is 15.Rac1+=) 15...c6–/+ (15...Nc4 A) worse is 16.Bg7 Bg7 17.Rac1 Nge5+= (17...Nd2 18.Rc7 Kb8 19.Rff7 Nf3 20.gf3 Bc3 21.Rb7 Ka8 22.Ra7 Kb8 23.Rfb7 Kc8 24.Ne7); B) 16.Rac1 b5 B1) 17.Rf7?! Rd7 (17...Nb2?? 18.Rcc7 Kb8 19.Rb7 Ka8 20.Ra7 Kb8 21.Rab7 Kc8 22.Rfc7) 18.Bg7 Rf7 19.Bh8 Nd2=; B2) 17.d3 Nge3 18.dc4 Nf1 19.Kf1+- (19.Rf1?! c6+=)) 16.h3 Nh6 17.Ndf4 Nc4 18.Bc3 Ne5 19.Rac1 g6 20.Nf6 Bg7 21.Ne4 d5 22.Ng5 Rd7 23.Rc2 Nf5 24.Nd3?? (better is 24.Nh5! f6 25.Ng7 Rg7 26.g4=) 24...Nd3–+ (24...Nd3 25.Rf5 gf5 26.Bg7 Rg8–+) 0–1. Girvalakis,Spyridon (2110) – Xylogiannopoulos,Antonios (1910), Heraklio op–A, 2007. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 Bg4)

5.Be2 Be2 6.Ne2 Be7 =.

5.Be2 Be6 6.c4 Be7 7.Nf3 Nc6 8.Qc2 Qd7 9.Nc3 Bf5 10.Qb3 0-0 11.h3 Be6 12.g4 g6 13.Qc2 Rad8 14.0-0-0 a5 15.b5 Na7 16.d4 ed4 17.Nd4 b6? (17...c6!?+=) 18.f4+/- (18.Ne6?! fe6 19.f4 c6+/-) 18...Qe8 19.f5 Bd7 20.g5 Bf5? (better is 20...Nh5 21.Bh5 Bg5+-) 21.Nf5 Nd7 (21...gf5 22.gf6 Bf6+-) 22.Nh6 Kh8 23.Nd5 Ne5 24.Nc7 Qd7 25.Be5 (25.Be5 de5 26.Rd7 Ba3 27.Kb1 Rd7 28.Nd5+-) 1–0. combijack (1750) – aphgan (1620), gameknot.com, 2009.

5.Be2 Bf5 6.c4 Nc6 7.Nf3 a6 8.0-0 Ne4 9.Nc3 Be7 10.d4 ed4 11.Ne4 Be4 12.Nd4 Nd4? 13.Qd4+- d5 14.Qg7 Rf8 15.cd5 c6? 16.dc6 bc6 17.Rfd1 a5 18.Rd8 Kd8 19.Rd1 Kc8 (20.Bg4 Kb7 21.Rd7 Kb6 22.Qd4 c5 23.Qe4 Ra7 24.ba5 Ka5 25.Ra7 Kb5 26.a4 Kb6 27.Qb7#) 1–0. rommeltdf (1780) – sportsfan, net–chess.com, 2002.

5.Be2 Bf5 6.c4 Be7 7.Nc3 (7.Nf3 0-0=) 7...0-0 (7...Nc6 8.d3=) 8.Rc1 (8.Nf3 a5=) 8...Nc6 (8...c5 9.d4=+) 9.Nd5 (9.d3 a6=) 9...Nd5 (9...Be4 10.Ne7 Ne7 11.Nf3=) 10.cd5 Nb8 11.Nf3 (11.d4 a5=) 11...c6 (11...a5 12.b5=) 12.dc6 Nc6 13.0-0 e4 14.Nd4 (14.Ne1 Rc8=) 14...Nd4 15.Bd4 d5 (15...Bf6 16.Bf6 Qf6 17.Rc7=) 16.Qc2 (16.f3 Qd7+=) 16...b6 (16...Bd6 17.Qb3=) 17.Qc3 (17.Qb2 f6+=) 17...Rc8= 18.Qb2 Rc1 (18...f6 19.Qb3=) 19.Rc1+= Bd6 (better 19...f6!?+=) 20.Bg7+- Re8 21.Bh6 (21.Bf6!? Qb8 22.h3+-) 21...Be5 (better 21...Bh2 22.Kh2 Qh4 23.Kg1 Qh6+=) 22.d4?? (better 22.Qb3+=) 22...Bg7 (better 22...ed3 23.Qd2 de2–+) 23.Bg7 (23.Bf4 Be6+-) 23...Kg7 24.Qc2 (24.Qb3 Qd7+-) 24...Qg5 25.Qc7 (25.Qa4 Bh3 26.g3 Re7+-) 25...Bh3+- 26.g3 (26.Qg3 Qg3 27.hg3+-) 26...Bg4? (better 26...Rc8 27.Qc8 Bc8 28.Rc8 Qe7+=) 27.Bg4 Qg4 28.Qa7 Qe2? (better 28...Rc8 29.Ra1 Rc2+-) 29.Rc7?? (better 29.Qb6 Rc8 30.Rf1+- (30.Rc8?! Qd1 31.Kg2 Qf3 32.Kf1 Qd1 33.Kg2 Qf3 34.Kh3 Qh5 35.Kg2 Qf3=)) 29...Qd1= 30.Kg2 Qf3 31.Kh3?? (31.Kg1 Qd1 32.Kg2 Qf3 33.Kg1 Qd1=) 31...Qh5?? (better 31...Re6 32.Rf7 Qf7 33.Qf7 Kf7–+) 32.Kg2= Qf3 33.Kf1 (33.Kh3 Re6 34.Rf7 Qf7 35.Qf7 Kf7–+) 33...Qd1 (better 33...Re6!? 34.Rf7 Qf7–+) 34.Kg2= Qf3 35.Kf1 (better 35.Kg1!? Qd1 36.Kg2=) 35...Qd1 (better 35...Re6!? 36.Rf7 Qf7–+) 36.Kg2= ½–½. PolishDefender – Nautiluschess, ICS blitz, 2001.

5.Be2 Bf5 6.Nf3 Be7 7.0-0 Nbd7 (7...0-0 8.c4=) 8.c4 0-0 (8...a5 9.d4=) 9.d3 (9.d4 a5+=) 9...c6 (9...a5 10.Nc3=) 10.e4 Bg4 (10...Be6 11.Ng5=) 11.h3 (11.Nbd2 a5=) 11...Bh5 12.Qc2 (12.Nc3 c5=) 12...Bg6 (12...a5 13.d4=) 13.Nbd2 (13.Nh4 a5=) 13...Rc8 (13...a5 14.Rfd1=) 14.Rfe1 (14.Rfd1 c5+=) 14...Nh5 (14...b5 15.Nh4+=) 15.d4 Nf4 (15...Qc7!?+=) 16.de5+- de5 (16...d5 17.Rad1+-) 17.Ne5 (17.Be5? Ne5 18.Ne5 Ne2 19.Re2 Qd4–+) 17...Ne5 18.Be5 Bg5 (18...Bf6 19.Bf6 (worse 19.Bf4 Ba1 20.Bg4 Ra8=) 19...Qf6 20.Rad1+-) 19.Nf3 (19.Rad1 Re8 20.Qc3 Ne2 21.Re2 f6+-) 19...Ne2 (19...Re8 20.Rad1 (20.Ng5?! Re5 21.h4 h6=+) 20...Qe7 21.Bf1+- (21.Ng5?! Qe5 22.h4 f6=+)) 20.Qe2 Bf6 (better 20...Re8!?+-) 21.Rad1 Qe7 (21...Qe8 22.Bf6 gf6 23.Qe3+-) 22.Bd6 Qe6 (22...Qe8 23.Bf8 Kf8 24.e5+-) 23.Bf8 Rf8 24.e5 Be7 25.Nd4 Qc8 26.e6 (26.c5 Rd8+-) 26...f6 (26...Re8 27.Qg4+-) 27.Qf3 Qc7 (27...Rd8 28.Nf5 Bf5 29.Qf5+-) 28.Nf5 Re8 (28...Rd8+-) 29.Rd7 (29.Rd7 Qd8 30.Rd8 Bd8 31.Nd6+-) 1–0. Maarten – JD5258875, itsyourturn.com, 2001.

5.Be2 Bf5 6.Nf3 h6 7.0-0 a6 8.d4 e4 9.Nfd2 Be7 10.c4 c6 11.Nc3 b6 (11...d5 12.Rc1+=) 12.f3 ef3 13.Bf3 Qc8 (13...Bd3 14.Rf2+=) 14.e4 Bg6 15.e5 de5 16.de5 Nfd7 17.Nce4 0-0 18.Bh5 Bh7 (18...Bh5!? 19.Qh5 Qd8+/-) 19.Qg4 c5? (19...g6 20.e6 f5+-) 20.Bf7! Rf7 21.Rf7 Kf7 22.Rf1 (22.Nd6 Bd6 23.ed6+-) 22...Kg8? (22...Ke8 23.Qg7 Be4 24.Ne4 Qc6 25.Qg8 Nf8 26.Rf8 Bf8 27.Nd6 Kd7+-) 23.e6 (23.Nd6 Bf5 24.Nf5 Bg5 25.Qg5 hg5 26.Ne7 Kh7 27.Nc8 Nc6+-) 23...Nf6 (23...Ne5 24.Be5 g6+-) 24.Rf6 (worse is 24.Nf6 Bf6 25.Rf6 h5+-; worse is 24.Bf6 Bf8 25.Bg7 Bg7+-) 24...Bf6 (24...Nc6 25.Rf7 g6 26.Rg7 Kh8 27.Re7 Nd4 28.Nc5 bc5 29.Bd4 Kg8 30.Rg7 Kf8 31.Qf3 Ke8 32.Qf7 Kd8 33.Qe7) 25.Nf6 Kh8 26.Ne8!! Qb7 (26...Qe8 27.Qg7) 27.Bg7 Qg7 28.Qg7 1–0. pierred (2775) – grahamtrue (2260), net–chess.com, 2016.

5.Be2 h5 6.Nc3 a6 7.Bg4 hg4 8.Nge2 Nc6 9.d4 ed4 10.Nd4 Qd7 11.Nc6 Qc6=+ 12.0-0 0-0-0 13.a4 d5–/+ 14.b5 Qc4 15.Qd2 Ne4 16.Ne4 Qe4 17.ba6=+ ba6 18.Qe2 Rd6 19.Bd4? Rdh6–+ 20.f3 Qg6 21.Be5=+ Bd6 22.Qa6= Kd7 23.Qb5 Ke7 24.Qb2 f6 25.Bd6+= cd6 26.Rad1 Rh2+= 27.Qb7 Kf8 28.Qc8 Kf7 29.Qd7+/- Kf8 30.Qd6+- Kg8 31.Qd5 Kf8 32.Qd6 Kf7 33.Qc7 Ke6 34.Rd6 Ke5 35.Qc5 1–0. mgriffin (1615) – eforry, net–chess.com, 2001.

5.Be2= h5 6.Bg4 Ng4 7.h3 Nh6 8.Qh5+= g6 9.Qf3+/- Qg5?? 10.Qb7+- Be7 11.Qa8 0-0 12.Qd5 c6 13.Qf3 Nf5 14.Ne2 c5 15.bc5 dc5 16.g3 Nc6 17.Qc6 a5 18.Qd5 Rd8 19.Qe5 Bd6 20.Qh8# 1–0. Ramini,Edgardo – Krahl,Wolfgang, CiF, 2002.

5.f3 Be6 6.c4 Nbd7 7.d4 ed4 8.Bd4 c5 9.Bb2 Qb6 10.Bf6 Nf6 11.Qb3 cb4 12.ab4 Be7 13.e4 d5 14.ed5 Bb4 15.Ke2 Bf5 16.g4 0-0 17.gf5 Rae8 18.Kd1 Re1 19.Kc2 Rf1 20.Kd3 Re8 21.Qb4 Qb4 22.d6 Rc1 23.c5 Qc4 24.Kd2 Qc2# 0–1. ZZZZZz – GnuChessMac 4.0, 2000.

5.f3 Be6 6.Ne2 Be7 7.d4 Nbd7 8.e4 c6 9.Ng3 g6 (9...0-0 10.c4 ed4 11.Qd4+=) 10.c4= ed4 11.Qd4 Qb6 12.Qc3 0-0 (12...a5 13.Nd2=) 13.f4+= Nb8 14.f5 Bc8 15.c5 dc5 16.bc5 Qc5? (better is 16...Qc7+=) 17.Qc5+- (17.Qc5 Bc5 18.Bf6+-) 1–0. Frank,Detlev – Rubach,H, Pinneberg–ch op, 1997. (=1.a3 Nf6 2.b4 d6 3.Bb2 e5 4.e3 Bg4)

5.f3 Bh5 6.Bc4 Ne4 (6...a5!?=+) 7.Ne2= Qh4? (better is 7...d5 8.Bb3 Bf3=) 8.g3+- Ng3 9.Ng3 f5 (better is 9...Qc4 10.Nh5 Nd7+-) 10.Ke2?? (10.d3 f4 11.ef4 ef4 12.Qe2 Kd8+=) 10...e4?? 11.Nh5+- Qh5 12.Qf1 Nc6 13.h4 Be7?? 14.Bg7 Rg8 15.Bg8 0-0-0 16.Be6 Kb8 17.Nc3 a5 18.b5 Na7 19.Nd5 Bf8 20.Bf8 Rf8 21.Nf4 ef3 22.Qf3 Qe8 23.a4 c6 24.bc6 Nc6 25.Bd5 Nd4 26.Kf2 Nf3 27.Kf3 Ka7 28.Ne6 Rf6 29.Nc7 Qe5 30.Nb5 Ka6 31.c4 f4 32.e4 Rh6 33.Rab1 Qh5 34.Kf2 Qg4 35.Nc7 Ka7 36.Rb7 1–0. maxii – Ragaman, Live Game Caissa's Web, 2004.

5.Nc3 Bg7 6.Be2 0-0 7.Nf3 Bf5 8.0-0 Nc6 9.b5 Ne7 10.d3 Bd7 11.a4 a6 12.Qd2 ab5 13.ab5 c6 14.Ra8 Qa8 15.Ra1 Qd8 16.Ne4 Qb6 17.Nd6 cb5 18.Be5 Nc6 19.d4 b4 20.Ng5 h6 21.Ngf7 Be6 22.Nc4 Bc4 23.Bc4 Rf7 24.Ra8 Nd8 25.Qd3 Kf8 26.Qg6 Ke7 27.Bf7 1–0. rcm06 (2145) – ulla (1650), gameknot.com, 2014.

5.Nc3 Bg7 6.Nf3 0-0 7.Bd3 a5 8.0-0 ab4 9.ab4 Ra1 10.Qa1 Nc6 11.b5 Nb4 12.Be2 Bf5 (12...c5 13.Qd1=) 13.d3 Qa8 (13...Nc2? 14.Qa4 Ne3 15.fe3+-) 14.e4 Bd7 15.Qb1 Qa5 16.Nd2 Bb5 17.Nb5 Qb5 18.Ba3 c5 19.c3 Qa4 20.Bb4 cb4 21.cb4 (21.Qb4 Qb4 22.cb4 d5=) 21...d5 22.Nf3 de4 (22...Re8 23.Rc1=) 23.de4 Qc6 24.Bd3 ½–½. Ventimiglia,Charles (1755) – Lee,Chon (1800), IECC, 1998.

5.Nc3 Bg7 6.Nf3 0-0 7.Be2 Nc6 8.h4 (8.b5 Ne7=) 8...h6 9.d3 a6 10.Qd2 d5 11.Ng5? (11.0-0 Bg4=+) 11...Bf5?? (11...hg5!? 12.hg5 Nh7 13.f4-+) 12.Bf3 (better 12.e4!? d4 13.ef5 dc3 14.Bc3 hg5 15.hg5-/+) 12...d4 13.Nce4 (better 13.ed4 ed4 14.Ne2 hg5 15.Bc6 bc6 16.hg5-+) 13...Re8?? (better 13...hg5 14.Nc5 g4 15.Bc6 bc6-+) 14.Nf6= Bf6 15.Bc6 bc6 16.Ne4 Bg7 (16...Be4 17.de4 Bh4 18.Qd3=) 17.h5 gh5 (17...g5!?=) 18.Rh5+/- de3 (18...Bg6 19.Rh2+=) 19.fe3 (better 19.Qe3!? Bg6 20.Rh1+/-) 19...Be4 20.0-0-0?? (better 20.de4 Qd2 21.Kd2=) 20...Bg6-+ 21.Rh6 (21.Rh2-+) 21...Rf8 (better 21...Bh6 22.Rh1 Qg5-+) 22.Rh8 (22.Rh8 Kh8 23.Rh1 Kg8 24.e4-+). TwelveTeen (2735) - opperwezen (2640), lichess.org, 2018.

5.d3 Bg7 6.Be2 0-0 7.Nf3 Nc6 8.Nbd2 (8.b5 Ne7=) 8...Re8 (8...a5 9.b5 Ne7 10.d4=+) 9.c4 (9.b5 Ne7=) 9...a6 (9...a5 10.b5 Ne7 11.0-0=) 10.0-0= Ne7 (10...Bf5 11.e4 Bg4 12.Nd4 Nd4 13.Bg4 Ng4 14.Qg4=) 11.Qc2 (11.d4 Nc6+=) 11...Bd7 (11...Nc6 12.d4=) 12.Ne1 (12.d4 Nc6+=) 12...c6 13.Nef3 b6 14.c5 bc5 15.bc5+/- Nc8 16.cd6 Nd6 17.Be5+- Nb5 18.a4 (18…Nc7 19.d4+-) 1–0. Harthimmer,Arne – Mezzarobba, corr DEN–FRA, 1996.

5.d3 Bg7 6.Be2 0-0 7.g4 a5 (7...Be6 8.c4 Nfd7 9.Nc3 (9.h4 c6 10.Nc3 h6 11.Ne4 Qe7 12.h5 g5 13.Ng3 d5 14.cd5=) 9...a6 10.Bf3 c6 11.h4 b6 12.h5 g5 13.b5 Qc7 14.bc6=) 8.Nd2 (8.g5 Nfd7+= 9.h4 ab4 10.ab4 Ra1 11.Ba1 Na6 12.b5 Nac5 13.Nc3 Nb6 14.Nf3+=) 8...ab4 9.ab4 Ra1 10.Ba1 Na6 (10...b5 11.c3 (11.d4+= Bb7 12.Ngf3 e4 13.Ng1 Qe8 14.c4+=) 11...h6 12.h4 Nd5 13.h5 g5 14.Bf3+=; 10...Be6 11.c4 Na6 12.g5 Ne8 13.b5 Nb8 14.Ngf3=) 11.b5 (11.g5 Nd5 12.b5 Nc5 13.Ngf3 Na4 14.Nb1+=) 11...Nc5 12.g5 Ne8 (12...Nfd7 13.Ngf3+= Ne6 14.Rg1+=) 13.h4 (13.Ngf3 Ne6 14.h4=) 13...f6 (13...Qe7 14.Ngf3= (14.d4 Nd7 15.de5 de5 16.Ngf3=); 13...Ne6 14.Ngf3=) 14.Ngf3 (14.h5=) 14...Bd7 (14...Bg4 15.d4 ed4 16.Nd4 Be2 17.Qe2 fg5 18.h5 gh5 19.Qh5+=) 15.Qb1 (15.d4 ed4 16.Bd4 Bg4+=) 15...Qe7 (15...Ne6 16.h5=) 16.Qb4 Ne6 (16...Qf7 17.d4 Ne6 18.de5 fe5 19.h5 gh5 20.Qh4=) 17.Rg1 (17.h5 gh5 (worse is 17...fg5 18.hg6 h6 19.Ne5+-) 18.gf6 Qf6 19.Rh5 Qf7+=) 17...Rf7 (17...fg5 18.hg5 c5 19.bc6 bc6 20.Qh4+=) 18.Ne4 (18.h5 gh5 19.gf6 Nf6= (worse is 19...Rf6 20.Ne5 Bc8 21.Bh5+/-; 19...Qf6?! 20.Ne4 Qe7 21.c4+=)) 18...f5 19.Nc3 c6 (19...c5 20.Qa5=) 20.b6 (20.h5 Qd8=) 20...d5 (20...f4 21.h5=) 21.Qe7= Re7 22.Bb2 (22.Nb1 d4=) 22...e4 23.Nd2 d4 24.Nd1 de3 (24...ed3 25.cd3 c5 26.Nc4=) 25.fe3 Bb2 (25...ed3 26.cd3 f4 27.e4=) 26.Nb2+= ed3 27.Nd3 Nd6 28.Kf2 Nf8 29.Ra1 Be6 30.Ra8 Kg7 31.Rd8 Nc8 32.Nf4 Nb6+= 33.h5 Nd5 34.h6 Kf7 35.Nc4 Nf4 36.Ne5+= Kg8 37.ef4 Rc7 38.Re8 b5 39.c3 Bf7 40.Rb8 Bd5+= 41.Ke3 Re7 42.Kd4 Bf7 43.Kc5 Be8 44.Bd1?? Ne6?? 45.Kd6+- Kf8 46.Nc6 Rd7 47.Ke6 Rd1 48.Ne5 Rd2 49.Rb7 1–0. Cristobal,M (2170) – Lopez,Di (2125), 39th Open, Mar del Plata ARG, 2008.

5.d4 Nc6 =.

5.d4 ed4 6.ed4 Qe7 7.Qe2 Qe2 8.Be2 Bg7 9.Nf3 0-0 10.0-0 Bf5 11.c4 Nbd7 12.Nbd2 d5 13.c5 Ne4 14.Ne4 de4 15.Nh4 Be6 16.g3 a5 17.Bb5 c6 18.Be2 Bd5 19.Ng2 b6 20.Ne3 bc5 21.Nd5 cd5 22.bc5? (better is 22.Bb5!? Rfd8 23.Bd7 Rd7 24.bc5+=) 22...Nc5! 23.dc5 Bb2 24.Ra2 Bc3 25.c6 d4 26.Bb5 Ra7 27.a4 f5 28.f3 Kg7 29.Rc2 Rc7 30.Kg2 Re8 31.Rd1 Ree7 32.Kf2 g5 33.Kg2 Kf6 34.Kf2 h5 35.h3 g4 36.f4 h4 37.Rh1? Rh7 38.Kg2 hg3 39.h4 Bb4 40.Rc4 d3 41.Rd4 Rhe7 42.Rd7 d2 43.Rc7 Rc7 44.Kg3 e3 45.h5 Rc6!! 46.Rd1 Re6 47.Be2 Bd6 48.Rh1 Kg7 49.h6 Kh7 50.Rh5 Rf6 51.Bd1 Bf8 52.Rh2 Bh6 53.Re2 Re6 54.Bc2 Re4! 55.Rh2 e2 (55...e2 56.Re2 Re2 57.Bf5 Kg7–+) 0–1. Kotlowski,Tomasz – Hoffmann,Piotr, Poznan op–B Poland, 2004.

5.d4 ed4 6.Bd4 Bg7 7.Nf3 0-0 8.Be2 Re8 9.Kf1 (9.0-0 Nc6=) 9...Nc6=+ 10.Bb2 b6 11.Nbd2 Bb7 12.c4 Ne5 13.Ne5 de5 14.Bf3 e4 15.Be2 Qe7 16.Nb3 Rad8 17.Qc2 h5 18.h3 h4 19.Rd1 (19.Kg1 a6=) 19...Rd1=+ 20.Qd1 Rd8 21.Qc2 Ne8 (21...c5 22.Bc3=+) 22.Bg7= Ng7 23.Kg1 Qf6 24.g3?? (better 24.b5=) 24...hg3-+ 25.fg3 Nf5 26.Rh2? (26.Qc1 Ng3 27.Rh2-+) 26...Ne3 27.Qc1 Nf5 (better 27...Rd1! 28.Qd1 Nd1 29.Bd1 e3-+) 28.Rf2 (28.g4 Ng3 29.Qe1 Ne2 30.Re2 e3-+) 28...Qe5 Black prepares e3 (better 28...Ng3 29.Bg4 Qh4-+) 29.g4?? (29.Qf4 Qf4 30.gf4 e3-+) 29...Nd4 (better 29...e3 30.Rg2 Bg2-+) 30.Nd4 Qd4 31.Qf4 Rd7 32.c5 (32.g5 e3 33.Qd4 Rd4-/+) 32...e3 (32...bc5!? 33.b5-+) 33.Qd4 Rd4 34.Rf3?? (better 34.Rf1-+) 34...Bf3 35.Bf3 Rd2 36.Kf1 (36.c6-+) 36…Rf2 (36...Rf2 37.Ke1 Rf3-+) 0-1. lucliasco (2730) - Arifars17 (2675), Rated Bullet game, lichess.org, 2020.

5.d4 e4 6.Nd2 Bg7 7.c4 0-0 8.Qb3 Re8 9.Rc1 Bf5 10.Ne2 Nbd7 11.Nc3 h5 12.c5 Nf8 13.Be2 d5+= 14.b5 N8h7 15.a4 c6 16.Ba3 Qd7 17.Rb1+= Re7 18.a5 Bg4 19.b6 a6 20.h3 Be2 21.Ne2 g5 22.Kd1 Bh6 23.Kc2 Qf5 24.Rbf1 Nd7 25.Qb1 Qg6 26.Qe1 f5 27.g3 Rf8 28.Kb3 Kh8 29.Bb2 f4 30.gf4 gf4 31.Rfg1 Qf5 32.ef4 Bf4 33.Nf4 Qf4 34.Rg2 e3 35.Nf1?? Qf3–+ 36.Rg3?? ef2 37.Qc3 Qh1 38.Qd3 Qe4 39.Qd2 Rf3 40.Rf3 Qf3 41.Kb4 Qe2 42.Bc3 Qf1 43.Qf4 Qc4 (44.Ka3 Qc3 45.Ka4 Re1 46.Qb8 Nb8 47.h4 Ra1) 0–1. Javipe (1905) – Doda (2070), Freundschaftspartie, 6m + 0s, 2007.

5.d4 Bg7 6.Nd2 ed4 7.Bd4 0-0 8.Ngf3 Re8 9.Bc4 Nbd7 10.0-0 c5 11.Bb2 Nb6 12.Bb3 Be6 13.c4 Qd7 14.Rc1 Rad8 15.Ba1 Bf5 16.a4 Qe7 17.a5 Nbd7 18.b5 Ne5 19.Bc2 Bg4 20.h3 Bf3=+ 21.Nf3 Nc4 22.Bg6 hg6 23.Rc4= b6 24.Ra4 Ne4 25.ab6 ab6 26.Ra6 Rb8 27.Bg7 Kg7 28.Qd3 Qf6 29.Ra7 Re6 30.Rfa1 Rh8 31.R1a4 d5= 32.Rd7 Rh3 33.Qd5 Nc3 34.Qa8? Rh8–+ 35.Qa7 Na4 36.Qa4 Rd6 37.Rd6 Qd6 38.g3 Rd8 39.Kg2 Qd5 40.e4 Qd1 41.Qa7 Rh8 42.Nh4 Qd4 43.Qe7 Qf6 44.Qb7 Qe6 45.f4 Re8 46.Kf3 Re7 47.Qa8?! Qb3 48.Kg4 Qd1 49.Kh3 Qh1 50.Kg4 Qe4 51.Qd8 Qe6 52.f5 Qe4 53.Kh3 Qh1 54.Kg4 Re4 55.Kg5 Qc1 (56.Qd2 Qd2#) 0–1. Dergatschova_Daus,Anna – Lelchuk,Zoja, Bundesliga, 2003.

5.f4 Nc6 6.fe5 de5 7.Nf3 Bg7 8.Bc4 0-0 9.0-0 e4 10.Bf6?? Bf6–+ 11.Ne1?? Ba1 12.Nc3 Bc3 13.Qc1 Bd2 14.Qb2 Be3 15.Kh1 Bd4 16.Qb3 Ne5 17.c3 Nc4 18.Qc4 Bg7 19.Qe4 Re8 20.Qf4 Bd7 21.Qf7 Kh8 22.Nd3 Rf8 (23.Qf8 Bf8–+) 0–1. guest7 – guest327, ICS blitz, 2000.

5.h3 Bg7=+ 6.Nf3 0-0 7.Be2 Re8 8.d4 e4 9.Nfd2 h5 10.0-0 Nbd7 11.c4 Nf8 12.Nc3 c6 13.c5 d5 14.b5 N8h7 15.bc6 bc6 16.Rb1 Ng5 17.Na4 Bh6 18.Bc3+= Qd7 19.Bb4 Kg7 20.Ba5+/- Rh8 21.Rb4 Ne8 22.Qa1 Qf5 23.Rfb1 Qf6 24.Rb8 Rb8= 25.Rb8 Bh3 26.Rb7 Qf5 27.Bc7 Nc7 28.Rc7 Bg2 29.Bf1?? Bf3–+ 30.Bg2 Bg2 31.Kg2 Qg4 32.Kf1 Nf3 33.Nf3 ef3 34.Qb2 Qg2 35.Ke1 Qg1 36.Kd2 Qf2 37.Kc3 Qe3 38.Kb4 Rb8 39.Ka5 Rb2 40.Nb2 f2 (41.Ka4 Qd4 42.Kb3 Bc1 43.Rf7 Kf7 44.Kc2 Qb2 45.Kd3 f1Q) 0–1. Blum,Erhard – Konikowski,Jerzy, Freundschaftspartie, 5m + 0s, 2007.

5.h4 Bg7=+ 6.Be2 h5 7.Nf3 0-0 8.c4 a5 9.b5 Nbd7 10.d4 ed4 11.ed4 Re8 12.Nc3 Nb6 13.0-0 Bg4 14.c5 (14.Qc2 Qe7=) 14...Nbd5=+ 15.Rc1 Nf4 16.Re1 (16.Bc4 dc5 17.dc5 Ne4=+) 16...Nh7 (better 16...dc5 17.dc5 Ne4-/+) 17.g3? (better 17.cd6!? cd6 18.Rc2=+) 17...Ne2 (better 17...Re2!? 18.Re2 Bf3 19.gf4 Qh4 20.Re8 Re8 21.Qf3 Bd4 22.cd6 cd6-+) 18.Re2-/+ dc5 (worse 18...Bf3 19.Re8 Qe8 20.Qf3 Bd4 21.cd6 cd6 22.Qb7=) 19.Re8 Qe8 20.dc5? (better 20.d5-/+) 20...Rd8-+ 21.Qe1 Bf3 22.Qe8 Re8 23.c6 (23.Na4 Bh6 24.Rb1 Re4-+) 23...bc6 24.bc6 Bc6 25.Nb1 (25.Na2 Bb2 26.Rc6 Re1 27.Kg2-+) 25...Bb2 26.Rc6 Re1 27.Kg2 Rb1 28.Rc7 Ba3 29.Ra7 Bb4 30.Ra8 Nf8 (30...Kg7 31.f3-+) 31.Ra7 (31.Kh3 Kg7-+) 31...Ra1 32.Ra8 a4 33.Kh3 (33.Rb8 Bc5 34.Rc8 Rc1-+) 33...a3 34.Ra7 (34.Kg2 Ra2 35.Kf3 Be1-+) 34...Be7! 35.f4 (35.Re7 Rh1 Combination) 35...a2 36.Re7 (36.Kh2 Nd7! 37.Rd7 Rh1 38.Kh1 a1Q 39.Kg2 Qb2 40.Kf3-+) 36...Rh1 37.Kg2 a1Q 38.Kf3 Qf1 (38...Qd1 39.Ke3 Re1 40.Kf2 Qd2 41.Kf3 Re7 42.f5 Qe2 43.Kf4 Qe3) 39.Ke4 (39.Ke3 Qc1 40.Kf3 Qd1 41.Ke3 Rh2 42.f5 Re2 43.Kf4 Qc1 44.Kf3 Qf1) 39...Qe1 (39...Qe2 40.Kd4 Qd2 41.Kc4 Qc2 42.Kd4 Rd1 43.Ke3 Rd3 44.Ke4 Qe2) 40.Kd5 (40.Kd3 Qb1 41.Ke3 Qb3 42.Kd2 Rd1 43.Ke2 Qd3 44.Kf2 Qf1 45.Ke3 Rd3 46.Ke4 Qe2) 40...Qe7 (40...Qd1 41.Kc6 Qc2 42.Kb7 Rb1 43.Ka8 Qc6 44.Ka7 Qa4) 41.Kc6 (41.g4 Rd1 42.Kc4 Qc7 43.Kb3 Rb1 44.Ka2 Qc2 45.Ka3 Qb3) 41...Qe6 (41...Rc1 42.Kd5 f5 43.g4 Qc5) 42.Kc5 Rd1 43.Kb5 (43.Kb4 Rd4 44.Kc5 Qd5 45.Kb6 Rb4 46.Kc7 Qd7) 43…Rd5 (43...Rd5 44.Kb4 Qe4 45.Kc3 Rd3 46.Kb2 Qe2 47.Kc1 Rd1; 43...Qb3 44.Kc6 Rc1 45.Kd6 Qe6) 0-1. black_bishop_88 (2525) - Jovidon (2480), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.e3 g6)

6.Nc3 0-0 7.d3 a5 8.Nf3 ab4 9.ab4= Ra1 10.Ba1 Re8 11.Be2 b6 12.0-0 Bb7 13.Qb3 c5 14.Rb1 Nbd7 15.bc5 dc5 16.Bb2 e4 17.de4 Ne4 18.Rd1 Nc3 19.Bc3 Bc3 20.Qc3 Qc7 21.Qd2 Bc6 22.Ne1 Ne5 23.Qc3 f5 24.Nd3 Nd3 25.Qd3 Qb7 26.Bf1+= Qe7 27.Qd6 Ba4 28.Qe7 Re7 29.Rd6 Rb7= 30.g3 Kf7 31.Bg2 Rb8 32.Bc6 Bc6 33.Rc6 h5 34.h4 Ra8 35.Kg2 Ra4 36.Rb6 Rc4 37.Kf3 Kg7 38.Ra6 Kf7 39.Rb6 ½–½. Velker – Dopper,Johan, corr ICCF TT–4–90, 1993.

6.Nc3 0-0 7.Nf3 c6 8.Be2 Qe7 9.0-0 Bg4 10.d3 Nbd7 11.e4 Nh5 12.Nd2 Be2 13.Ne2 f5 14.ef5 gf5 15.Qc2 Rae8 16.Rad1 f4 17.Nf3 Qf7 18.Nc3 Qg6 19.Rfe1 Kh8 20.Qe2 Nhf6 21.Ne4 Ng8 22.c5+/- d5 23.Nd6 Re7 24.Nb7 e4 25.de4 de4 26.Nd4 f3= 27.Qf1 Ne5 28.Nd6 Nd3 29.Nc6 Nb2 30.Ne7 Ne7 31.Rd2 Rf4 32.Re3+/- Rg4 33.g3+- h5 34.h3 Rg5 35.Re4 Nd5 36.h4 Nf6 37.Re6 Rg3 38.fg3 Qg3 39.Kh1 Nd3 40.c6 (40…Nf4 41.c7 Ne6 42.c8Q Nf8 43.Qf2+-; 40.Rd3?! Qh4 41.Kg1 Qg3 42.Kh1 Qh4 43.Kg1 Qg3 44.Kh1 Qh4=; 40.Qd3 Qh3 41.Rh2 Qe6 42.Qf3 Qe1 43.Kg2 Ng4+-) 1–0. Luzuriaga,Norberto Horacio – Colombo Berra,F, corr, 1999.

6.Nc3 0-0 7.Nf3 Nbd7 8.d4 Nb6 (8...ed4 9.Nd4 a5 10.Be2=) 9.c5 (9.de5!? de5 10.Qd8 Rd8 11.Ne5+/-) 9...dc5 (9...ed4 10.Nd4 dc5 11.bc5=) 10.dc5+= (worse 10.Ne5 cd4 11.ed4 a5=+) 10...Qd1 (10...Nbd7 11.Bd3+=) 11.Rd1 (11.Nd1 Nbd5 12.Ne5 Rd8+/-) 11...Nbd7+= 12.Bc4 e4 13.Ng5 Ne5 (13...h6 14.Nf7 Rf7 15.Nb5=) 14.Be2 Nd3 (14...Bf5 15.Nb5 Nd3 16.Bd3 ed3 17.Nc7+/-) 15.Bd3+/- ed3 16.Rd3 h6 17.Nge4?? (better 17.Nf3+/-) 17...Ne4-+ 18.Ne4 (better 18.f3 Bc3 19.Bc3 Nc3 20.Rc3-+) 18...Bf5?? (better 18...Bb2 19.c6 bc6-+) 19.Bg7+/- Be4 (19...Kg7 20.Rd4+/-) 20.Rd4 (better 20.Bf8 Bd3 21.Bh6+-) 20...Bd3?? (better 20...Kg7 21.Re4 a5+/-) 21.Bf8+- (21.Rd3?! Kg7 22.Ke2 Rfd8+-) 21...Bb5 (21...Kf8 22.Rd3 b5 23.Ke2+-) 22.Bh6 c6 (22...a5 23.Bg5 Kg7 24.Rf4+-) 23.Bf4 Re8 (23...f6 24.Bc7+-) 24.f3 (24.Rd7 a5 25.ba5 Re4 26.Rb7 Rc4+-) 24...f6 25.Kf2 Kf7 26.Rhd1 g5 (26...Ba4 27.Rd7 Re7 28.R1d4+-) 27.Rd7 Kg6 28.Bg3 a6 29.R1d6 Rf8 30.e4 Ba4 (30...Rf7 31.Rf7 Kf7 32.Rd7 Kg6 33.f4+-) 31.e5 Kf5 (31...Bb3 32.Rb7 Bd5 33.ef6 Rf6 34.Re7+-) 32.Rf6 (better 32.Rb7 Kg6+-) 32...Rf6 33.ef6 Kf6 34.Rb7 Bb3 (34...Bb5 35.h4 Kg6 36.Rd7 gh4 37.Bh4+-) 35.Rb6 Bc4 36.Rc6 Kf5 37.Rb6 Bb5 38.c6 (38.Bb8 g4 39.fg4 Ke4 40.Rb5 Kd5+-) 38...Bc6 39.Rc6 g4 40.Rc5 (better 40.fg4 Ke4+-) 40...Kf6 41.fg4 a5 42.Ra5 Kg6 43.Rf5 (43.Rf5 Kg7 44.Be5 Kg6 45.h4 Kh6 46.h5 Kh7 47.Rf8 Kh6 48.Bf6 Kh7 49.Rh8) 1-0. allyouneedisluft (2625) - UnderDog83 (2485), Rated Bullet game, lichess.org, 2019. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6 4.e3 g6)

6.Nc3 0-0 7.Nf3 e4 8.Nd4 Nbd7 9.Be2 c5 10.Nb3 b6 (10...Ne5 11.Qc2=) 11.b5 (11.f3!?+=) 11...Ne5= 12.Qc2 Bf5 13.Nc1 Re8 14.h3 h5 15.Nd5 (15.0-0!?=) 15...Nd5+= 16.cd5 Qg5 17.g3? (better is 17.Kf1!?+=) 17...Nd3!–+ 18.Bd3 (18.Nd3 ed3 Double attack; 18.Bd3 ed3 Decoy) 18...ed3 19.Qb3 Bb2 (19...Be4 20.Bg7 Bh1 21.Bb2–+) 20.Qb2–/+ Be4 21.Rg1 Qd5 22.Na2 (22.g4 h4–+) 22...Qf5–+ 23.g4 (23.Nc3 d5–+) 23...Qf3 24.Nc1 Qh3 25.gh5 Qh5 26.Qf6 Qe5 27.Qe5 Re5 28.f4 Rh5 29.Na2 d5 30.Nc3 Re8 31.0-0-0 d4 32.Ne4 Re4 33.Rdf1 Kf8 34.Rg3 de3 35.Re3 Re3 36.de3 c4 37.a4 Rh2 38.f5 gf5 39.Rf5 c3 40.Rf1 Ra2 41.Kb1 Ra4 0–1. Buck,K1 (1805) – Jaenig,Reinhard (2160), 10. TCh–Euro sen, 2008.

6.Nc3 0-0 7.Nf3 Bf5 8.h3 Nbd7 9.d3 c6 10.g4 Be6 11.Bg2 d5= 12.cd5 cd5 13.Rc1 Rc8 14.0-0 Ne8 15.Nd2 Nc7 16.f4 f5 17.g5 d4 18.ed4= ef4 19.Rf4 Qg5=+ 20.Qf3 Bd4 21.Kh1? Bc3?? 22.h4?? Qh6?? 23.Bc3? Nd5–+ 24.Rc4? Nc3 25.R4c3 Rc3 26.Rc3 Qd2 27.Rc7 Qe1 28.Kh2 Qh4 29.Kg1 Qd4 (30.Kh1 b5–+) 0–1. Diederich,Hauke – Woelfer,Wiebke (1685), DSSM WK2 Husum, 2002.

6.d3 Be6 7.Nd2 Nbd7 8.Ngf3 h6 9.Be2 c6 10.h3 Qc7 11.Rc1 0-0 12.Nh2 Rfe8 13.e4 a5 14.Qc2 ab4 15.ab4 Nh7 16.Bg4 Ndf8 17.0-0 Bg4 18.Ng4 h5 19.Nh2 Ne6 20.Ndf3 Nf4 21.Ra1 Qb6 22.Bc3 Bf6 23.Bd2?? (better is 23.Ra5+=) 23...Ne2–/+ 24.Kh1 Ra1 25.Ra1 Qf2 26.Nf1 Ng5! 27.Bg5 Ng3 28.Ng3 Qc2 29.Bf6 Qd3 30.Ra7 Qb1 31.Kh2 Qb4 32.Kh1 Rb8 33.Be7 Qb6 34.Ra3 Qc7 35.Bf6 b5 36.c5 b4 37.Rb3? dc5 38.Be5 Qd7 39.Kh2 Ra8 40.Rb2 Qb7 41.Nd2 Qb5 42.Nf3 c4 43.Bd6 b3 44.Ne2 Qa4 45.Be5 Qa6 46.Bc3 Qb7 47.Rd2 Qc7 48.Be5 Qb7 49.Bb2?? c5 50.Rd5 Qe7 51.Nc3 Qc7 52.Kg1 Rd8 53.Nd2 Rd5 54.Nd5 Qa7 55.Nc4 Qa2 56.Kf2 Qb1 57.Nde3 Qe4 58.Nd2 Qd3 59.Nec4 f5 60.Be5 g5 61.Bb2 g4 62.h4 f4 63.Be5 Kf7 64.Bf4 Qd4 65.Be3 Qf6 66.Kg3 b2 67.Bc5 Qc3 68.Kh2 b1Q! 69.Nb1 Qc4 70.Bf2 Qc2 71.Bg3 Qb1 72.Bc7 Qd3 73.Bg3 Qd8 74.Be1 Qd3 75.Bg3 Ke6 76.Bc7 Kf5 77.Bg3 Ke4 78.Bf2 Qb3 79.Be1 Kd3 80.Bg3 Ke2 81.Kg1 Qg3 82.Kh1 Qh4 83.Kg1 Qg5 (83...Qg5 84.g3 Kf3 85.Kh1 Kg3 86.Kg1 Qc1; 83...Qf2 84.Kh2 Kf1 85.Kh1 Qg2) 0–1. Pozanco Romasanta,Marc (1625) – Conejo Sanchez,Rafael (1775), ESP–ch U12 Granada, 2009.

6.d4 0-0 7.h3 ed4=+ 8.Bd4 Re8 9.Be2 Bf5 10.Nf3 Nc6 11.Bb2 a5 12.b5 Ne5 13.Ne5 de5 14.Nc3 Qe7 15.0-0 Rad8 16.Qc1 Ne4 17.Ne4 Be4 18.Rd1 Qg5=+ 19.g3 h5 20.Kh2 h4=+ 21.Rg1 f5 22.f3 f4?? 23.gh4 Qh4 24.fe4 fe3 25.Qe3 Rf8 26.Raf1 Rf4 27.Rf4 ef4 28.Qc1 g5?? 29.Bg7 Kg7 30.Rg4 Qf2 31.Rg2 Qh4 32.Qc3 Kg6 33.Qa5 f3 34.Bf3 Rd3 (35.Bg4 b6+-). rommeltdf (1800) – gbsr (1895), net–chess.com, 2002.

6.Nf3 a6 7.d3 0-0 8.Be2 Be6 9.Nbd2 b6 10.0-0 c6 11.Qc2 Nbd7 12.e4 h5 (12...Nh5 13.Rfe1=) 13.h3 Nh7 14.Rfd1 Ng5 15.Ng5 Qg5 16.Nf3 Qe7 17.d4 f6 18.d5 cd5 19.cd5 Bf7 20.Rac1 Rfc8? (20...Bh6 21.Nd2 f5 22.ef5 gf5 23.Qf5+/-) 21.Qd2 (better is 21.Qc8!? Rc8 22.Rc8 Kh7 23.Ba6+-) 21...b5 22.Rc8 Rc8 23.Rc1 Rf8 24.Rc7 Qd8 25.Qc2 g5 26.Qc6 Nb8 27.Qc2 g4?? 28.hg4+- hg4 29.Nd2?? Bh5? 30.Nb3 f5+= 31.f3?? gf3 32.Bf3= Bf3 33.gf3 Qg5 34.Qg2 Qg2 35.Kg2+= fe4 36.fe4 Rf4 37.Nd2 Rf7 38.Rc8 Rf8 39.Rf8 Kf8 40.Kf3 Ke7 41.Nf1 Nd7 42.Ng3 Kf6 43.Nf5 Bf8 44.Kg4 Nb6 45.Bc1 Na4 46.Bg5 Kf7 47.Kf3 Nc3 48.Bd2 Na4 49.Kg4 Nb2 50.Kf3 Nc4 51.Bc1 Kf6 52.Ke2 a5 53.ba5 Na5 54.Kd3 Nb3 55.Bb2 Nc5= 56.Ke3 Na4 57.Bc1 Nc5 58.Bb2 Na4= 59.Bc1 Nc5 60.Bb2 ½–½. Fournier,Frederic (1630) – churros, Active, 2008.

6.h3 0-0=+ 7.Bd3 Be6 8.Nc3=+ Nbd7 9.Nf3= c6 10.Ng5 Re8 11.Nge4 d5 12.Nd6= Re7 13.cd5 Bd5 14.Nd5 Nd5 15.Nb7 Qb6 16.Nd6 c5 17.Nc4+/- Qe6 18.e4 Nf4 19.Qf3 Rd8 20.g3 Nh3 21.b5 Ng5= 22.Qe3 f6? 23.Na5+- Qb6 24.Nc6 Ree8 25.Nd8 Rd8 26.Bc4 Kh8 27.f4 Ne6 28.a4 a5 29.fe5 Nd4 30.ef6 Bf6? 31.Qh6 Nf8 32.Bd4 Bd4 33.Rd1 Qf6 34.Qf4 Qe5 35.d3 Bc3 36.Ke2 Qd4 37.Qf7 (37…Qg7 38.Rdf1+-) 1–0. Van der Linden,Arie – Zimmermann,Ruth, Kleve op, 2001.

7.Qc2 e4 A) 8.Nd4 A1) 8...Re8 9.Be2 (9.Nc3 c5 10.bc5 dc5 11.Nb3 Nc6 12.Be2 b6 13.0-0 Bf5 14.h3) 9...c5 10.bc5 dc5 11.Nb3 Nc6 12.Nc3 Qd6 13.0-0 Be6 14.Ne4; A2) 8...c5 9.Nb3 cb4 10.ab4 Nc6 11.b5 Nb4 12.Qc3 a5 13.ba6 Nc6 14.c5; B) 8.Ng5 Qe7 9.Be2 (9.Nc3 h6 10.Nh3 Bh3 11.gh3 Nc6 12.Bg2 Rfe8 13.0-0 Qe6 14.b5) 9...h6 10.Nh3 a5 11.b5 Bh3 12.gh3 Nbd7 13.Bd4 d5 14.Nc3.

7.Qc2 Bf5 A) 8.d3 a5 9.b5 (9.Nbd2 Re8 10.e4 Be6 11.b5 Nbd7 12.Be2 Nh5 13.g3 Bh3 14.Bf1) 9...Nbd7 10.Nc3 Nc5 11.e4 Bd7 12.Be2 Qe7 13.0-0 a4 14.h4; B) 8.Qb3 Nc6 9.b5 Na5 10.Qa4 b6 11.Nc3 Nd7 12.e4 Nc5 13.Qc2 Bg4 14.Nd5.

7.Qc2 Bg4 8.Be2 (8.Nc3 a5 9.h3 (9.Bd3 ab4 10.ab4 Ra1 11.Ba1 Nc6 12.Qb3 Qe7 13.Nd5 Nd5 14.cd5; 9.Be2 ab4 10.ab4 Ra1 11.Ba1 Nc6 12.b5 Nb4 13.Qb3 c5 14.0-0) 9...Bf5 10.e4 ab4 11.ab4 Ra1 12.Ba1 Be6 13.b5 Nbd7 14.d4) 8...Nbd7 (8...a5 9.0-0 (9.Nc3 ab4 10.ab4 Ra1 11.Ba1 Nc6 12.b5 Nb4 13.Qb3 c5 14.0-0) 9...e4 10.Nd4 Be2 11.Ne2 Na6 12.Bf6 Qf6 13.Nbc3 Qe6 14.Rab1) 9.h3 (9.Nc3 Nb6 10.0-0 Qd7 11.h3 Bf3 12.Bf3 Nc4 13.Bb7 Rab8 14.Ba6) 9...Bf3 (9...Bf5 10.Qb3 a5 11.Nc3 ab4 12.ab4 Ra1 13.Ba1 Qe7 14.g4) 10.Bf3 e4 11.Be2 c6 (11...a5 12.Nc3 ab4 13.ab4 Ra1 14.Ba1) 12.Nc3 Ne5 (12...d5 13.0-0= Ne5 14.cd5) 13.0-0 (13.Ne4 Ne4 14.Qe4) 13...Qd7 (13...Re8 14.Rac1) 14.f4?? (better is 14.Ne4 Ne4 15.Qe4+/-) 14...ef3!–/+ 15.Bf3 (15.Bf3 Nc4 Deflection; 15.gf3 Qf5 Double attack (15...Qh3 Deflection; 15...Qf5 Decoy)) 15...Nd3?? (better is 15...Nc4 16.Rab1 d5–/+) 16.Nd1 (better is 16.Qd3 Qe6 17.Ne2+-) 16…Nb2= ½–½. Buck,K1 (1805) – Bue,G (1825), 10th TCh–Euro sen, Dresden GER, 2008.

7.Be2 Nbd7 8.Nc3 c6 (8...a5 9.d4=) 9.0-0 Qc7 10.d4 Re8 11.Re1 a5 12.h3 ed4 13.Nd4 Nb6 (13...Ne5 14.Qd2=) 14.Qb3 Ne4 (14...Qe7 15.Rad1+=) 15.Ne4 Re4 16.Bc3 ab4 17.ab4 (17.Qb4? c5 18.Nb5 cb4 19.Nc7 bc3 20.Na8 Na8–+) 17...Ra1 18.Ra1 d5 19.c5 Nd7 20.Ra7 Re8 21.Qa3 h5 (21...Be5 22.Nf3+-) 22.b5 Ne5 23.Qa4 (23.Qb4 Kh7+-) 23...Kh7 24.Nc6! Nc6 (24...bc6 25.Rc7 Pinning (25.Rc7 Deflection); 24...Nc6 25.bc6 Combination) 25.bc6 Bc3 26.cb7 Bd7 27.Qd7! Qd7 28.b8Q! Qe6 (28...Rb8 29.Rd7 Discovered attack) 29.Qb3 ½–½. Marekt – Fixxxer, gameknot.com, 2019.

7.Be2 Nbd7 8.d4 Qe7 9.Nc3 c6 10.0-0 e4 11.Nd2 d5 12.Qc2 Rd8 13.cd5 cd5 14.Nb5 a6 15.Nc7 Rb8 16.a4 Nf8 17.b5 Ne6 18.Rfc1 Nc7 19.Qc7 Rd7?? 20.Qb8+- Rd8 21.Rc8 Rc8 22.Qc8 Ne8 23.Ba3 Qe6 24.Qb7 (24…a5 25.Nb3+-) 1–0. pierre – marky82, internet, 2008.

7.Be2 e4 8.Nd4 c5 9.Nb3 b6 10.d4 Qe7 (10...a5 11.ba5 ba5 12.Nc3=) 11.Nc3 Nc6 12.b5 cd4 (12...Nd8 13.0-0=) 13.bc6 (13.ed4 Nd8+=) 13...dc3= 14.Bc3 a6 (14...Be6 15.Nd4=) 15.Nd4 Qc7 16.0-0 h5 (16...Rd8 17.Rb1 d5 18.cd5 Nd5 19.Bb2=) 17.h3 Re8 18.a4 Kh7 (18...Re5 19.Rb1 Bh3 20.gh3 Rg5 21.Kh2 d5 22.Kh1=) 19.Qb3 (19.a5 ba5 20.Ba5 Qa7+=) 19...Rb8 (19...Be6 20.Rfb1 Reb8 21.Rb2+=) 20.Rfb1 Be6 21.a5 b5 (21...ba5 22.Ba5 Rb3 23.Bc7 Rb1 24.Rb1 d5+-) 22.Ne6+- fe6 23.cb5 ab5 24.Bb5 (24.Qb2 Rf8 25.Bb5 Ng8+-) 24...Nd5 25.Bg7 Qg7 26.Ra3 Rec8 (26...Nc7 27.Qa4+-) 27.a6 Qa7 (27...Nc7 28.Qa4+-) 28.Qc2 Rb6 (28...Nf6 29.Rbb3+-) 29.Qe4 Nc7 (29...Qf7 30.Qd4 Qa7 31.Rab3+-) 30.Bd3 d5 (30...Rb1 31.Bb1 Rg8+-) 31.Qg6 (31.Qg6 Kh8 32.Qh7) 1-0. Grandie – Guestfree, internet, 2021.

6.Ne2 0-0 7.0-0 a5 8.b5 Nbd7 9.f4 Nb6 10.Bb3 Nfd7 (10...e4 11.Bd4=) 11.Nbc3 Nc5 12.Ba2 ef4 (12...Nca4 13.Na4 Na4 14.Bc1=) 13.Nf4+= (worse 13.ef4 Bg4 14.Qb1 Nba4 15.Na4 Bb2 (15...Na4?! 16.Bg7 Kg7 17.Nd4=) 16.Nb2 Be2=+) 13...Bf5 14.Rc1 (14.Rb1 Qg5+=) 14...Qd7 (14...Ne4 15.Nfe2=) 15.Ba1 (15.Rb1 Rae8+=) 15...Rfe8 (15...Bc3!? 16.Bc3 Qb5=) 16.Ncd5+= Qd8 (16...Nd5!? 17.Nd5 Qd8+=) 17.Bg7+/- Kg7 18.Nb6 cb6 19.Qf3 Be4 (19...Ne4 20.Qe2+/-) 20.Qf2 Qf6?? (better 20...Bf5+/-) 21.Nh5+- (21.Nh5 Kh6 22.Nf6 Bf5 23.Qh4 Kg7 24.Rf5 h5 25.Nh5 Kg8 26.Bf7 Kh7 27.Bg6 Kg8 28.Ng7 Kg7 29.Qh7) 1-0. FeegLood (2700) - Workhorse (2420), lichess.org, 2015.

6.Ne2 0-0 7.0-0 a5 8.f4 c6 9.fe5 de5 10.Be5 ab4 11.ab4 Ra1 12.Ba1 Nbd7 13.Ng3 Nb6 14.Bb3 Be6 15.Be6 fe6 16.Nc3 Nbd5 17.Nce4 Ne4 (17...Nb4? 18.Bf6 Bf6 19.Qg4+- (19.Rf6?! Rf6 20.Nf6 Qf6+=)) 18.Ne4 Rf1 19.Qf1 Nb4 20.Bg7 Kg7 21.Qa1 Kg8 22.Nf6 (better 22.Qe5 Qe7 23.Nf6 Kf7 24.Nh7 Nc2 25.Ng5 Kg8 26.h4+/-) 22...Kf7= 23.Nh7 Qh4 24.Qb1 Nd5 25.Qb7 (better 25.c4!? Ne7 26.Qf1 Nf5 27.e4=) 25...Ne7-/+ 26.Qb1 Qh7 27.Qf1 Ke8 28.Qa1 Qh4 29.Qa8 Kf7 30.Qa1 Qe4 31.Qf1 Kg7 32.Qd1 Nf5 33.Qa1 Kh7 34.Qd1 Nh4 35.Qe2 Qc2 36.g3? (36.e4 Qb2-+) 36...Qc1 37.Kf2 Nf5 38.Qd3? (38.g4 Nd6 39.Qd3-+) 38...Qh1 39.Qd7 Kh6 40.g4 Qh2 41.Ke1 (41.Ke1 Qh1 42.Kf2-+). FeegLood (2650) - mila010 (2150), Rated Bullet tournament 6gDrgAnQ, lichess.org, 2015.

6.Ne2 0-0 7.0-0 Re8 8.f4 Nc6 9.b5 Nb8 (9...Na5 10.Ba2=) 10.fe5+= de5 11.Ng3 Nbd7 (11...a6 12.a4=) 12.Nc3 Nb6 13.Bb3 Be6 14.Be6 Re6 15.d3 h6 (15...e4 16.Qe2= (16.Nge4? Ne4 17.de4 Nc4-+)) 16.Qe2 h5 (16...c6 17.a4=) 17.Rf2 Nbd5 18.Raf1 (18.Nd5 Qd5 19.c4 Qd7+=) 18...Nc3= 19.Bc3 Ng4 20.Rf3 Bh6 (20...f5 21.h3 Nf6 22.e4=) 21.Ne4 Qh4? (better 21...f5!? 22.Nc5 Rb6+=) 22.h3+- f5 23.Nc5 (23.hg4?! hg4 24.Rf5 gf5 25.Rf5 Rf8+/-) 23...Ree8 24.e4 (24.hg4 hg4 25.Nd7 gf3 26.Qf3 e4 27.de4 Bg5=+; 24.Nb7 Reb8 25.Na5 Be3 26.Re3 Ne3 27.Qe3 Rb5+-) 24...f4 25.Be1 (better 25.Bd2+-) 25...Qg5? (better 25...Qd8+/-) 26.g3?? (26.hg4 hg4 27.Rg3 fg3 28.Bg3 Qe3 29.Qe3 Be3 30.Bf2 Bc5 31.Bc5-/+) 26...Nf6 (better 26...Ne3!? 27.Re3 fe3=+) 27.Kh1 b6? (27...h4!? 28.gf4 ef4+/-) 28.Nb3 (28.Rg1 Ng4 29.Na6 Rac8+-) 28...Rf8 (better 28...Nd7 29.Bd2 Qe7+-) 29.Rg1 fg3 (29...Ng4 30.gf4 ef4 31.Rff1+-) 30.Rfg3 (30.Bg3?! h4 31.Bh2 Qh5+-) 30...Qf4 (30...Ng4+-) 31.Bd2 Kh7 (31...Qh4 32.Bh6 Ng4 33.Bf8 Rf8+-) 32.Bf4 ef4 33.Rg6 1-0. FeegLood (2580) - bitwizardry (2355), lichess.org, 2015.

6.Ne2 0-0 7.0-0 d5 8.Bb3 Re8 0.03/0 9.c4 0.22/0 9...c6 0.27/0 10.Nbc3 0.05/0 10...Nbd7?! 0.07/0 11.cd5 0.66/0 11...cd5 0.65/0 12.Nd5 0.59/0 12...Nd5 0.63/0 13.Bd5 0.71/0 13...e4?! 1.53/0 14.Bb3? -0.59/0 14...Bb2 -0.98/0 15.Ra2? -1.24/0 15...Bg7 -1.92/0 16.Ng3 -2.99/0 16...Qh4?! -1.49/0 17.d4 -1.07/0 17...ed3 -1.03/0 18.Qd3 -1.11/0 18...Ne5 -1.19/0 19.Qe2 -1.08/0 19...Ng4 -1.35/0 20.h3 -1.34/0 20...Ne3? -0.85/0 21.fe3 -1.00/0 21...Qg3? 0.01/0 22.Bf7 0.09/0 22...Kf8? 1.65/0 23.Bg6 1.65/0 23...Ke7?? #6/0 24.Rf7 #5/0 24...Kd8 #4/0 25.Rd2?! Normal #5/0 1-0. FeegLood (2620) - weavthemate (2185), Rated Bullet tournament fOYYax0X, lichess.org, 2015.

6.Nf3 0-0 7.0-0 a6 8.Ba2 b5 9.d3 Bb7 10.Nbd2 Nbd7 11.c4 bc4 (11...c5 12.e4=) 12.Nc4+= Nb6 13.Nfd2 Rb8 14.Rb1 Qd7 15.f3 Nfd5 16.Nb6 (16.Qc2 Rfe8=) 16...cb6 Opening the c–file gets Black a lot of play 17.Bd5 Bd5 18.e4 Be6 19.Nc4 (19.Qe2 Rbc8=) 19...Rfc8 (19...f5 20.Rc1=+) 20.Rc1 (20.f4!?=) 20...Bh6–/+ 21.Rc3 b5 22.Na5 Rc3 Black gets the initiative 23.Bc3 Be3 24.Kh1 Bb6 (24...Rc8 25.Bb2=+) 25.Nb3 (25.f4 Rc8 26.Qd2 ef4=) 25...Rc8 26.Bd2 (26.Bb2 Be3=+) 26...Qc6 27.Nc1 (27.Na1 f5–/+) 27...Qc2 28.Qc2 (28.Qe1 Qb2 29.f4 Rc2–+ (worse 29...Qa3 30.f5 gf5 31.ef5–/+)) 28...Rc2–+ 29.Rd1 Bd4 30.f4?? (better 30.Ne2 Bb2 31.Kg1–+) 30...Bg4 31.Rf1 Rd2 32.h3 Rd1 33.Rd1 Bd1 34.fe5 de5 (34...de5 35.Na2 Bb2–+) 0–1. Wozniak,Andrzej (1800) – Hoszowski,Piotr (2000), corr 1AMM Poland, 1992.

6.c4 0-0=+ 7.Nf3 e4 8.Nd4 a5 9.Nc3 Re8 10.0-0= ab4 11.ab4 Ra1 12.Qa1 Na6 13.Nc2 Bf5 14.Nd5 Nd5 15.Bg7 Ndb4 16.Nd4 Bc8 17.f3 Qg5 18.fe4–+ Re4?? 19.Nf3 Qe7= 20.Bf6 Qf8 21.Ng5 Re8 22.Bc3 f5 23.Nh7?? Kh7–+ 24.Rf3 f4 25.Qe1 Qh6 26.Rf4–/+ Nd3 27.Rf7 Kg8 28.Qf1 Ne5 29.Rf4 Rf8 30.Rf6 Nc5 31.Be5 de5 32.Bh5 Ne4 (33.Rf8 Qf8 34.Qf8 Kf8 35.Bg6 Nd2–+; 32...gh5 33.Rh6 Rf1 34.Kf1–+) 0–1. Gross,Wilhelm – Dopper,Johan, corr SOK–93–95, 1993.

6.c4 0-0 7.Nf3 e4 8.Nd4 c5 9.Nb3 cb4 10.ab4 Nc6 11.b5 Ne5 12.0-0 Bg4 13.Be5 Be2 14.Qe2 de5 15.Nc3. Gross,Wilhelm – Dopper,Johan, corr priv, 1997.

6.c4 0-0 7.Nf3 Bg4 8.Nc3 Re8 9.d3 Nc6 10.h3 Bd7 11.Qb3 Be6 12.Ng5 Qd7 13.Ne6 Qe6 14.Bf3 Rab8 15.0-0 Ne7 16.Nb5 Qd7 17.Rad1 a6 18.Nc3 Qc8 19.a4 b6 20.Rfe1 Kh8 21.b5 a5 22.d4 Nd7 23.Ne4 h6 24.g4 Rf8 25.Ng3 f6 26.Bg2 f5 27.f3 Qd8 28.Rd2 f4 29.ef4 ef4 30.Ne4 Ng8 31.c5 dc5 32.dc5 Qe8? 33.Bg7+- Kg7 34.Qd1 Ne5 35.cb6 Rb6 36.Nc5 Rd6 37.Rd6 cd6 38.Nb7 Rf6 39.Re4?? Qc8?? 40.Na5 Qc3 41.Nc6 Nd3 42.Bf1 Qc5 43.Kh2?? Nf2= 44.Qe2 Ne4 45.Qe4 Qf2 46.Bg2 d5 47.Qe5 Qe3 48.Qb2 Qe1 49.a5 Qg3 50.Kg1 Qe1 51.Kh2 Qg3 52.Kg1 Qe1 ½–½. Paulovic,Mi (1930) – Havlicek,P (1735), Ricany CZE, Open, 2011.

6.d4 ed4 7.ed4 0-0 =.

6.Nf3 0-0 7.0-0 a5 8.b5 c6 9.Nc3 Qb6 10.d4 Nbd7 11.bc6 bc6 12.Na4 Qb8 13.c4 Nb6 14.de5+= de5? 15.Be5+- Qa7 16.Bd4 Rb8 17.Nb6 Rb6 18.Bc5 Nd7 19.Bb6 Qb6 20.Rb1 Qc5 21.Qb3 Ne5 22.Qb6 Qa3 23.Ne5 Be5 24.Qc6 Be6 25.Rb7 Qa2 26.Bd3 a4 27.Qb5 a3 28.Qe5 Qd2 29.Qd6 a2 30.c5 Ra8 31.Rb8 Rb8 32.Qb8 Kg7 33.Qe5 Kg8 34.Qd4 Qa5 35.c6 Qc7 36.Rc1 Kf8 37.Qh8 Ke7 38.Qh7 Qc6 39.Rc6 a1Q 40.Bf1 Qa2 41.Rc7 Kf6 42.Qh8 Kf5 43.Bd3 Kg5 44.f4 Kg4 45.Qh3# 1–0. NightEagle (2660) – janeks (2830), freechess.org, 2001.

6.Nf3 0-0 7.0-0 h6 8.c4 Be6 9.Nc3 Nbd7 10.d4 ed4 11.Nd4 Ne5 12.Ne6 fe6 13.c5 dc5 14.bc5 Qd1 15.Rad1 (worse 15.Bd1 Nd3 16.Rb1 Nb2 17.Rb2 Ne4-/+; 15.Rfd1?! Rad8+=) 15...c6 16.h3 (16.Nb5 cb5 17.Be5 Ne4+=) 16...Nd5 (16...Ned7 17.Na4 b5 18.Bf6 Nf6 19.Nc3=) 17.Ne4 Nf3 18.Bf3 Bb2 19.Rb1 Ba3 20.Rb7 Rf7 21.Rb3 (21.Rfb1!? Rb7 22.Rb7+/-) 21...Bb4= 22.Nd6 Bc5? (better 22...Rf3 23.gf3 Bc5+=) 23.Nf7+- Kf7 24.Rc1 Bb6 25.Rc6 Rd8 26.Rd3 g5 (26...Nb4 27.Rd8 Nc6 28.Rd7 (28.Bc6?! Bd8 29.f4 Ke7=) 28...Ne7 29.Rb7+-) 27.e4 (better 27.Bh5 Ke7 28.Bg4+-) 27...Nb4 28.Rd8 Nc6 29.Rd7 Kf6 30.Bh5 Nd4 31.g3 Ke5 32.Bg6 Kf6 33.Bh7 Nf3 34.Kf1 h5 35.Rb7 Ke5 36.Ke2 (36.Rf7 g4 37.h4 Kd6+-) 36...Nd4 (better 36...Ng1 37.Ke1 Nh3=) 37.Kd3+- g4 38.hg4 hg4 39.Rg7 Kf6? (better 39...Nc6+-) 40.Rg4 Nc6 41.f4 a5 (41...Ke7 42.e5+-) 42.e5 Ke7 43.Rg7 Kf8 44.Rb7 Bc5 (44...Bf2 45.g4+-) 45.Be4 Nb4 (45...Nd8 46.Rb8 Ke7 47.g4+-) 46.Kc4 Be7 (46...Bf2 47.g4 Bg3 48.Rb5+-) 47.g4 (47.Rb8 Kf7 48.Ra8 Nd5 49.Bd5 ed5 50.Kd5 Bb4+-) 47...Na6 48.f5 Nc5 (48...ef5 49.gf5 Ba3 50.Ra7+-) 49.Rb8 (49.Re7!? ef5 50.Kc5 fe4+-) 49...Kf7 50.Bc2 Nd7 51.fe6 Ke6 52.Bf5 Ke5 53.Bd7 Bd6 54.Bf5 (better 54.Rb5 Kf6 55.g5 Kg7 56.Bf5+-) 54...Bb8= 55.Kb5 Bd6 (55...Bc7!?=) 56.Ka5+/- Be7 57.Kb5 Bg5 58.Kc6 Kf6 59.Kd7 Bf4 60.Ke8 Bg5 61.Kf8 Bf4 62.Kg8 Bg5 63.Kf8 Bh4 (63...Bf4 64.Be4+/-) 64.Ke8 Bg5 65.Kd7 Bh4 (65...Bf4 66.Bd3+=) 66.Kc6 Bg5 67.Kd5 Bh4 68.Ke4 Bg5 69.Kf3 Bh6 70.Kg2 Bg7 71.Kh3 Bh6 72.Kh4 Kg7 73.Kh5 Bf4 74.g5 (74.Be4 Be3+/-) 74...Be5 (better 74...Bg5!? 75.Kg4 Kf6=) 75.g6 Bd4 76.Bg4 Be5 (76...Be3 77.Be6+/-) 77.Bf5 Bf6 0-1. black_bishop_88 (2545) - Papagayo (2480), 1st CL WorldCup Semifinal, lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.e3 g6 5.Be2 Bg7)

6.Nf3 a5 7.b5 0-0 8.0-0 Nbd7 9.a4 Nc5 10.d4 ed4 11.Nd4 Nd5 12.c4 Nb4 13.Nc3 Be6 14.Rb1 Qe7 15.Qd2 b6 16.Ba3 Qf6 17.Bb4 ab4 18.Rb4 Ra7 19.Nd5 Bd5 20.cd5 Na4 21.Nc6 Raa8 22.Rf4 Qc3 23.Qd1 Nc5 24.Rc4 Qb2 25.Rc2 Qf6 26.Qd2 Rfe8 27.Ra2 Qc3 28.Qc3 ½–½. Malmstroem,Jan – Miraglia,Jorge, email 4AMM–F, 1998.

6.h3 0-0=+ 7.Nf3 Nc6 8.0-0= e4 9.Nh2 Be6 10.c4 a5=+ 11.b5 Ne5 12.Be5 de5 13.Nc3 Qd7 14.f4 Qd6 15.a4 ef4 (15...Rad8 16.Ra2–/+) ½–½. Benhassine – Dopper,Johan, corr 3GMM–31, 1997.

6.h3 c6 7.Nf3 Be6 8.d4 e4 9.Ng5 d5 10.Ne6+= fe6 11.0-0 0-0 12.Nd2 Nbd7 13.c4 Qe7 14.f3 ef3 15.Nf3 dc4 16.Bc4 Nd5 17.Qe1 N7b6 18.Bb3 Nd7 19.e4 N5f6 20.Qh4 Kh8 21.e5 Nd5 22.Qe7 Ne7 23.Ng5 Nd5 24.Ne6 Rf1 25.Rf1 Ne3 26.Rf7 Be5 27.de5 Nb6 28.Ng5 Nbd5 29.e6 Kg8 30.e7 Re8 31.Rg7 Kh8 32.Nf7 1–0. pierred – alterego7of9, Yahoo, 2005.

6.Nc3 Nbd7 7.Bc4 0-0 8.h4 (8.e4 Nb6 9.Bb3 Bg4=) 8...Nb6 (8...e4 9.Nd4=+) 9.Bb3 (9.Be2 a5=+) 9...Bg4 10.d3 h6 11.Ne4 Ne4 12.de4 Be6 (12...a5!?-/+) 13.Be6= fe6 14.Ng5?? (14.Qd3!?=) 14...Qf6?? (better 14...hg5 15.h5 Qf6-+) 15.h5?? (15.Nf3 Nc4 16.Bc3 Rad8=+) 15...gh5 (15...Qf2) 16.Ne6?? (better 16.Nh3 Na4 17.c4 Nb2 18.Qc2-/+) 16...Qe6 (16...Qf2) 17.Ke2? (17.Qd3-+) 17…Nc4. TwelveTeen (2685) - opperwezen (2680), lichess.org, 2018.

6.c4 0-0 7.Nc3 Re8 8.d4 ed4 9.Nd4 Nc6 10.Nc6 bc6 11.g3 Bg4 12.Qa4 (12.Be2!? Qd7 13.0-0=+) 12...Bf3 13.Rg1 d5 (13...Ng4 14.Bd3–/+) 14.Bg2 (< 14.Qc6 Re6 15.Qa4 d4–/+) 14...Bg2 15.Rg2 d4 16.0-0-0 dc3 17.Rd8 cb2 18.Kb2 Red8 19.Kc2 c5 20.b5? a6–+ 21.Qb3 ab5 22.cb5 c4 23.Qc4 Ra3 24.Rg1?? Rda8 25.Rb1–/+ h5 26.Qc7?? Ng4 27.Kd1? Nf2–+ 28.Ke1 Ng4 29.h3?? Ne3 30.Kf2? Bd4 31.Ke1?? Bg7 32.b6 Nd5 33.Qc6 Nb6 34.Qb6 Rg3–/+ 35.Kf2 Raa3?? 36.Qd8 Kh7–/+ 37.h4 Rh3 38.Re1? Rh2 39.Kg1–/+ Raa2 40.Qd5 Rag2?? 41.Qg2+= Rg2 42.Kg2 f6 43.Kf3 g5 44.Re7 g4 45.Kf4 Kg6 46.Rd7 Bh6 47.Kg3 Kf5 48.Rd5 Kg6 49.Rd1 Bg7 50.Rf1 Bh6 51.Re1 Bd2 52.Re2 Bc3 53.Re3 (53...Be5 54.Kg2=+) 1–0. slavisa11 – Pakman, Live Game Caissa's Web, 2004.

6.c4 0-0 7.d3 Bg4 8.Nbd2 Nbd7 9.Be2 h6 10.h3 Bf3 11.Nf3 c6 12.Qc2 a5 13.0-0 Qe7 Black intends e4 14.Nd2 (14.Rfc1 Rfe8=) 14...ab4 15.ab4 Ra1 16.Ba1 (16.Ra1 d5 17.b5+=) 16...e4 (16...Ra8 17.d4=) 17.f3 (better 17.de4 Ra8 18.Rd1+/-) 17...Ng4?? (better 17...ed3 18.Qd3 Rd8=) 18.hg4 (18.fg4 ed3 19.Qd3 Re8 20.Bg7 Kg7 21.Qd4 Qe5+-) 18...Qg5? (better 18...ef3 19.Nf3 Qe3 20.Kh1 Ba1 21.Ra1 Ne5+-) 19.Kh1 (better 19.f4 ed3 20.Qd3+- (20.fg5?! dc2 21.Bg7 Kg7+-)) 19...Kh8?? (better 19...Qh4 20.Kg1 Qg5=) 20.Rf2. opperwezen (2735) - catask (2760), lichess.org, 2019. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.e3 g6 5.Nf3 Bg7)

6.c4 0-0 7.d4 ed4 8.Nd4 Re8 9.Be2 Nc6 10.Nc6 bc6 11.0-0 Qe7 12.Bf3 Bd7 13.g3 a5 14.b5 Rab8 15.bc6 (15.a4!?=) 15...Rb2 16.cd7 Qd7 (16...Nd7 17.Nd2–/+) 17.Qc1 Reb8 18.Nd2 Ng4 19.Rb1 Rb1 20.Nb1 Ne5 21.Bg2 Qe6 22.Bd5 Qf6 23.Nd2 h5 (23...Qf5!?=+) 24.Ne4 Nf3 25.Kg2 Qf5 26.Nd6 cd6 27.Bf3 h4 28.g4?? h3 29.Kh3 Qf3 30.Kh4 Bf6 31.g5 Be5 32.Rg1 Qh5 0–1. slavisa11 – Pakman, Live Game Caissa's Web, 2004.

6.c4 0-0 7.Be2 a5 8.0-0 e4 9.Nd4 ab4 10.ab4 Ra1 11.Ba1 Nc6 12.Nc6+= bc6 13.f3 Bf5 14.fe4+/- Ne4 15.Bg7 Kg7 16.d3 Nf6 17.Qe1 Bd7 18.Qg3 Qe7+= 19.Nc3 Re8 20.Nd1 Ng8 21.Rf4 f6 22.Bg4 f5 23.Bf5 Bf5 24.Rf5 Nf6 25.b5 c5 26.e4 Nd7 27.Ne3 Nf6 28.Rc5 dc5 29.Nf5 (29...Kf7 30.Ne7 Re7 31.Qg5+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

6.c4 b6 7.d4 Nbd7 8.de5 de5 9.Ne5 Nh5? (9...Ne5 10.Qd8 Kd8 11.Be5+/-) 10.f4?? (10.Nf7 Kf7 11.Qd5 Ke7 12.Bg7+- (12.Qa8?! Bb2 13.Ra2 Be5+/-)) 10...Ne5+= 11.Qd8 (worse is 11.fe5 Qh4 12.Kd2 Bg4–/+) 11...Kd8 12.fe5 Bf5? 13.Be2+- Re8 14.g4 Be5 15.Be5 Re5 16.gh5 Re3 17.hg6 fg6 18.Rf1 Bg4 19.Rf2 Kd7 20.Nd2 Rae8 21.Kd1?? Be2 22.Kc2–/+ Bd3 23.Kb2 Re2 24.Re2 Re2 25.Kc3 Bf5 26.Rd1 Kc8 27.Nf3?? Re3–+ (27...Re3 28.Kd4 Rf3–+) 0–1. Fournier,Frederic (1820) – cheque, Active, 2007.

6.c4 Nbd7 7.Be2 c5 (7...0-0 8.d4=) 8.b5 (8.d3 Qb6=) 8...a6 9.a4 ab5 10.cb5 (10.ab5 Ra1 11.Ba1 0-0=) 10...b6 (10...e4 11.Ng5 d5 12.Qc2–/+) 11.0-0 0-0 12.Qb3 e4 13.Ne1 Bb7 14.d4 Rc8 (14...Bd5 15.Qd1=+) 15.Na3 (15.Nc3 cd4 16.ed4 Qe7=) 15...Qe7 16.Nec2 c4?? (better is 16...Bd5 17.Nc4 Rc7=+) 17.Bc4 (17.Nc4 Rc7+/-) 17...d5 18.Be2 Rc7 19.Nb4 Rfc8 20.Rfc1 Qd6 21.Rc7 Rc7 22.Rc1 h5 (22...Rc1 23.Bc1 Bf8 24.Nac2+/-) 23.Rc7 Qc7 24.Qc3 Qd6 25.Nbc2 (25.Nac2 Ng4 26.Bg4 hg4+-) 25...Bf8 (25...h4 26.a5 ba5 27.Qa5+/-) 26.Nb1 Ng4 (26...Bg7 27.Ba3 Qb8 28.Nb4+/-) 27.g3 (27.Bg4 hg4 28.Ba3 Qb8+-) 27...f5 (27...Qb8 28.Ba3+/-) 28.Ba3+- Qf6?? (28...Qb8 29.Bf8 Qf8 30.a5+-) 29.Bf8 (better is 29.Qc7!? Ba3 30.Nba3 Qe6+-) 29...Nf8? (better is 29...Qf8 30.a5 ba5 31.Qa5 Qb8+-) 30.Qc7 Qf7 31.Qf7?? (better is 31.Qb6 Ne6 32.a5+-) 31...Kf7+/- 32.Nc3 Nh7 (32...g5 33.Kg2+/-) 33.Nb4+- Ng5?? (better is 33...Ke6+-) 34.Bg4 hg4 35.Nbd5 Bd5 36.Nd5 Nh3 (36...Ke6 37.Nb6 Nf3 38.Kh1+-) 37.Kg2 Ke6 38.Nb6 g5 (38...Kd6 39.a5 Kc7 40.Nd5 Kb7 41.Nf4+-) 39.d5 (39.a5 f4 40.a6 Kd6+-) 39...Ke5 (39...Kd6 40.a5 Kc5 41.d6 Kd6 42.a6+-) 40.a5 f4 (40...Kd6 41.a6 Kc7 42.a7 Kb6 43.a8Q+-) 41.a6 f3 42.Kf1 Nf2 43.Kf2 Kd6 44.a7 1–0. Slavisa666 – jackflanders, Live Game Caissa's Web, 2004.

6.c4 Bg4 7.Be2 0-0 8.0-0 a6 9.h3 Bf3 10.Bf3 c5 (10...e4!? 11.Be2 d5+=) 11.Bb7+/- Ra7 12.Bf3 e4 13.Be2 d5 14.bc5 a5 (14...dc4 15.Qc2+/-) 15.Nc3 Rb7 16.Rb1 Nc6 (16...dc4 17.Bc4 Rd7 18.Bc1+-) 17.Qc2 Re8 (17...dc4 18.Nb5! Rd7 19.Rfd1+-) 18.cd5 Nd5 19.Nd5 Qd5 20.Bg7 Rb1 21.Rb1 Kg7 22.Bb5 Rb8 23.Bc6 Rb1 24.Qb1 Qc6 25.Qb6 Qa4 26.c6 Qa3 27.c7 Qc1 28.Kh2 a4 29.Qb8 a3 30.c8Q Qd2 31.Qh8 Kh6 32.Qbf8 Kg5 33.Qc5 f5 34.Qe7 Kh6 35.Qhh7 1–0. Fournier,Frederic – milosmar, Active, 2004.

6.d3 0-0 7.c4 Nc6 8.Nc3 Bg4 9.Be2 Bf3 (9...Re8!?=) 10.Bf3+/- (10.gf3?! d5=) 10...Nd4?? (better 10...e4 11.de4 a5+/-) 11.ed4+- ed4 12.0-0 (better 12.Ne2 c5 13.Bb7+-) 12...dc3+= 13.Bc3 1-0. opperwezen (2735) - catask (2765), lichess.org, 2019. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.e3 g6 5.Nf3 Bg7)

6.d3 0-0 7.Nbd2 a5 8.Be2 ab4 9.ab4 Ra1 10.Ba1 Bh3?? (10...c6 11.c4=) 11.Rg1?? (11.gh3 Qd7+-) 11...Qd7?? (11...Bd7 12.c4=+) 12.Ng5?? (12.gh3 Qh3 13.c4 Na6+-) 12...Qa4?? (12...Bg4 13.f3 Be6=) 13.Bc3?? (13.Nh3 Qb4 14.g4 Nfd7+-) 13...Qa3?? (13...Bc8!?-/+) 14.Qa1?? (better 14.Nb1 Qa4 15.gh3+-) 14...Nc6?? (better 14...Qa1 15.Ba1 Bd7=) 15.Nh3 (better 15.Qa3 Bc8 16.b5+-) 15...Ra8? (better 15...Nb4 16.Bd1 Qa1 17.Ba1 Ra8+-) 16.Bf1?? (better 16.Qa3 Ra3 17.Nb1+-) 16…Kh8 1-0. opperwezen (2660) - littleplotkin (2560), lichess.org, 2019. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.e3 g6 5.Nf3 Bg7)

6.d3 0-0 7.Be2 Nbd7 8.Nbd2 Re8 9.c4 c6 10.0-0 Qe7 11.Qc2 d5 12.e4 b6 13.b5 d4 14.a4 Bb7 15.Ba3 c5 16.Nb3 Nh5 17.g3 f5 18.ef5 e4 19.Nfd4 Qf6 (19...cd4 20.Be7 Pinning (20.Be7 Deflection); 19...Bd4 20.Nd4 Combination) 20.Ne6+/- Qf5 21.Ng7 Qh3 (better is 21...Ng7!? 22.d4 Ne6+/-) 22.de4?? (better is 22.d4 Ng7 23.a5 (worse is 23.dc5 Ne5 24.f4 ef3–/+) 23...cd4 24.Nd4+/-) 22…Be4–/+ (22...Be4 23.Qe4 Re4–/+) 0–1. FournierF+VinsotS – MataigneJM+PerrienF, Consultation, 2000.

6.d4 ed4 7.Bd4 Bg4 8.Be2 Bf3 (8...Nc6!?=) 9.Bf3+= (9.gf3?! a6=) 9...c6 10.c4 0-0 11.Nd2 a6 12.0-0 Nbd7 13.Ne4 Ne5 14.Be5 de5 15.Qd8 Rad8 16.Nf6 Bf6 17.Rfd1 (better is 17.Rad1!?=) 17...e4–/+ 18.Rd8? (better is 18.Be4 Ba1 19.Ra1–/+) 18...Rd8–+ 19.Rd1 Rd1 (better is 19...ef3 20.Rd8 Bd8 21.gf3 Bf6–+) 20.Bd1+= b5 (better is 20...Bb2!? 21.a4 Bc3=) 21.cb5+/- ab5 22.a4 (better is 22.Bc2+/-) 22...Bc3+= 23.ab5 cb5 24.Be2 Bb4 25.Bb5 Kg7 26.Bc6 f5 27.Kf1 h5 28.h3 Kf6 29.f3 ef3 30.Bf3 Bc5 31.Ke2 Kg5 32.Kd3 f4 33.ef4 Kf4 34.Kc4 Bf2 35.Kd5 h4 36.Ke6 g5 37.Kd5 Bg3 38.Kd4 Bf2 39.Kd5 Bg1 ½–½. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013.

5.d4 ed4+= 6.Bd4 Bg7 7.Nf3 0-0 8.Be2 Nc6 9.Bb2 Qe7 (9...Ne4 10.Bg7 Kg7 11.Bb5–/+) 10.Nbd2 (10.Nc3 Be6+=) 10...a5 (10...Nd5 11.Bg7 Kg7 12.0-0+=) 11.b5+= Ne5 12.Ne5 (12.0-0 Rd8+=) 12...de5–/+ 13.a4 Rd8 14.Qc1 Qb4 15.c3 Qh4 16.Nf3 Qh5 17.0-0 Bg4 18.Re1 (18.Bd1 Rd1 19.Rd1 Bf3 20.gf3 Qf3–+) 18...e4–/+ 19.Nd4 Be2 20.Ne2 Ng4 21.h3 Ne5 22.Ng3 (22.Qc2!? Nd3 23.Red1–/+) 22...Qh4–+ 23.Qc2 Nc4 (23...Nd3 24.Re2–+) 24.Bc1 (24.Rad1 Rd3! 25.Ne2 Rad8–/+) 24...Rd3–+ 25.Ne2 Rad8 26.Rb1 Be5 27.Qb3 (27.Nd4 Qh5–/+ (worse is 27...Bd4 28.cd4 Nd6 29.Qc7+=)) 27...Nd6 (27...Nb6 28.Ba3–/+) 28.Nd4–/+ Qg5 (28...Kg7 29.Rd1–/+) 29.Rd1 Nf5 (better is 29...Bf6–/+) 30.Kh1?? (30.Rd3 Nh4 31.g4 ed3 32.f4–/+) 30...Ng3!–+ (30...Bd4?! 31.Rd3 ed3 32.cd4–/+; 30...Nd4?! 31.ed4 Bf4 32.Bf4 Qf4 33.Qc4=) 31.Kg1 (31.fg3 Rd1 Double attack (31...Rd1 Decoy)) 31...Ne2 32.Kf1 Rd1 33.Qd1 Nc3 34.Qc2 Nb1 35.Qb1 Bd4 36.ed4 Qd5 37.Be3 Qc4 38.Kg1 Qa4 39.b6 c5! 40.Qe4 cd4 41.Qh4 Qd7 42.Bg5 d3 43.Bd2 Qd4 44.Qe7 Qb6 45.g3 a4 46.h4 h5 47.Kg2 Qd6 (47...Qd6 48.Qe1 a3–+) 0–1. Ivanets,Vladimir (2185) – Novichkov,Valery (2370), Moscow Open E, 2011.

6.d4 ed4 7.Nd4 0-0 8.g3 c5 9.bc5 dc5 10.Nb3 Qd1 11.Kd1 Na6 (11...Nbd7 12.N1d2=+) 12.Ke2 (Better is 12.Ba6!? ba6 13.Nc5 Bg4 14.Kc1+/-) 12...Bd7 13.Kf3?? (Better is 13.Bg2=) 13...Bc6–+ 14.Ke2 Bh1 15.N1d2 Bc6 16.Nc4 (16.Na5 Nc7–+) 16...Rad8 17.Ne5 Nb8 18.Rd1 Rd1 19.Kd1 Re8 20.Ke2 b6 21.Nc6 Nc6 22.Bg2 Ne5 23.h4 Nc4 24.Bc3 Nd6 25.Nc1 Nfe4 26.Be4 Ne4 27.Bg7 Kg7 28.Nd3 Nd6 29.Nf4 f5 30.Nd5 Ne4 31.Nc7 Re7 32.f3 Rc7 33.fe4 fe4 34.g4 Kf6 35.g5 Ke5 36.Kf2 b5 37.c3 a5 38.Kg3 b4 39.Kg4 bc3 40.h5 c2 41.hg6 hg6 42.a4 c1Q 43.Kg3 Rf7 44.Kg2 Qd2 45.Kh3 Rf3 46.Kg4 Qg2 (47.Kh4 Rh3#) 0–1. slavisa11 – Pakman, Live Game Caissa's Web, 2004.

6.d4 Nbd7 7.c4 0-0 8.Nc3 Re8 9.Be2 e4 10.Nd2 Nf8 11.Qc2 Can e4 get defended? 11...Bf5 12.0-0-0 (12.0-0!?+=) 12...h5 13.g3 Ne6 14.Nb3 (14.Nce4? Ne4 15.Ne4 Ng5-+; 14.Nde4? Ne4 15.Ne4 Ng5-+) 14...d5 15.h3 c6 16.Rdg1 Ng5 17.g4 hg4 18.hg4 Be6 19.Nc5 b6 20.Ne6 Re6 (worse 20...Ne6 21.g5 Nh7 22.b5 cb5 23.cd5+/-) 21.Qb3 a6 22.Kb1 b5 23.cd5 cd5 24.Rc1 Rc6 25.Na2 Rc4 26.Bc4 dc4 27.Qd1 Qd7 28.d5 Ng4 29.Bg7 Kg7 30.Qd4 f6 31.Rhg1?? (better 31.Rc2+=) 31...Nf3-+ 32.Qb2? (better 32.Qb6 Ng1 33.Rg1 Nf2 34.Nc3-/+) 32...Ng1 33.Rg1 Qd5 34.Nc3 Qf5 (34...Qd3!? 35.Ka2 Nf2 36.Rg2-+) 35.Qd2 Rf8 (35...Nf2 36.Rf1+=) 36.Qd6 Nf2 37.Nd5? (37.Ne2 Rf7 38.Qg3-/+) 37…Qe5 (37...Qe5 38.Qe5 fe5-+) 0-1. Arka50 (2400) - G0DZILLA (2620), Rated Blitz game, lichess.org, 2016.

6.d4 e4 7.Nfd2 0-0 8.c4 Qe7 9.Nc3 c6 (9...a5 10.Be2=) 10.d5 (10.Be2 Nbd7=) 10...Nbd7 11.Be2 Re8 (11...Nb6 12.dc6 bc6 13.0-0=) 12.Qb3 a6 13.0-0 h5 (13...Nb6 14.h3=) 14.h3+= c5 (14...Nb6 15.dc6 bc6 16.Qc2+=) 15.Qc2 Increases the pressure on e4 (15.Bd1 Rb8+=) 15...b6 16.Rfe1 Nf8 17.Bf1 (17.Na4 Rb8+=) 17...h4 (17...Bf5 18.Ne2 h4 19.Rab1=) 18.Rab1 (18.f3 ef3 19.Nf3 Bf5+=) 18...Bf5= 19.Ba1 N8h7 20.a4 (20.Ne2 Rab8=) 20...Qc7 (20...Ng5 21.Red1+=) 21.Rb3 (21.bc5 bc5 (worse is 21...Qc5 22.Nb3 Qc7 23.Nd4+/-) 22.Ne2 Ng5=) 21...Ng5 22.Reb1 (22.bc5 Qc5 (worse is 22...dc5 23.Qb2+/-) 23.Reb1 Nd7=) 22...Nd7 (22...Rab8 23.Qb2=) 23.Qa2 (23.bc5 Qc5 24.Bb2 Ra7=) 23...Qd8 (23...cb4!? 24.Rb4 Reb8=) 24.Ne2= Ba1 (24...Rc8 25.bc5 Ba1 26.c6+/-) 25.Qa1+= Nh7 26.a5 cb4 27.Rb4 ba5 28.Ra4 Ne5 29.Nd4+/- Ng5 30.Nc6 Nc6= 31.dc6 Qc7 32.Ra5 Qc6 33.Qf6 Ne6 34.Qh4 Nc5 35.Qf6 Rab8 36.Rba1 Re6 37.Qd4 Re7 38.g4 Bc8+= 39.Bg2 Bb7 40.R5a2 Ne6 41.Qb2 Nc5 42.Rb1 Qd7 43.Qd4 Qc7 44.Rab2 Rd8? 45.Rb7!+- Nb7 46.Ne4 Na5?? 47.Nf6 Kg7 48.f4 (48.Ne8 Kh6 49.Qh8 Kg5 50.f4#) ½–½. Slabek,Grzegorz (2050) – Lach,Aleksandra (2160), Cracovia Poland, 2011.

6.d4 e4 7.Nfd2 d5 8.c4 dc4 9.Nc3 0-0 10.Nde4 Ne4 11.Ne4 Re8 12.Nc3 a5 13.Bc4 ab4 14.ab4 Ra1 15.Ba1 Nc6 16.b5 (16.Nb5!?+/-) 16...Nd4= 17.0-0 Nf5 18.Qb3 Be6 19.Rd1 Qc8 20.Be6 Re6 21.Nd5 Ba1 22.Ra1 Qd8 23.Qc4 Rd6 24.e4 Ne7 (24...c6 A) worse 25.ef5 Rd5 (worse 25...cd5 26.Qd3=) 26.Qc2 Rb5=+; B) 25.Nc3 Nd4 26.e5=) 25.Ne7 (25.Nc7 Rd1 26.Rd1 Qd1 27.Qf1+=) 25...Qe7+= 26.f3 Qf6 27.Rc1 c6 28.Qc5 Kg7?? (better 28...Rd2 29.Rb1 cb5=+) 29.e5+- (29.e5 Qe6 30.ed6+-) 1-0. HIALUPHARMpl (2585) - alifie (2465), Rated Bullet game, lichess.org, 2021.

6.d4 e4 7.Nfd2 d5 8.c4 Bf5 9.Nc3 dc4 10.Bc4 0-0 11.0-0 Nc6 12.Qc2 Re8 13.Nb3 Be6? 14.Be6+- fe6 15.Rad1 Nd5 16.Ne4 1–0. Malmstroem,Jan – Bosmans, email CTON, 1996.

6.d4 e4 7.Nfd2 Bg4 8.Be2 Be2 9.Qe2 0-0 10.c4 Re8 11.Nc3 Nbd7 12.0-0 h5 13.Rae1 c6 14.a4 d5 15.cd5 cd5 16.Rc1 a6 17.Nb3 Nb6 18.Nc5 Rc8? 19.Rc2 Rc7 20.a5 Nbd7 21.N3a4 Nc5 22.dc5 Qb8 23.Nb6+/- Rd8 24.Rd1 Ng4 25.Rd5?? Rd5 26.Nd5–/+ Rd7?? 27.Nb6?? Rd3 28.h3?? Qd8 29.g3+/- Ne3 30.fe3 Re3 31.Qf2 Rg3= 32.Kh2 Rf3 33.Qe1 Qd3 34.Rg2 Bh6 35.Bc1 Rh3 36.Kg1 Qd4 37.Rf2 Bc1 38.Qc1 Rg3 39.Kf1 Qd3 (40.Re2 Qf3 41.Rf2 Qh1 42.Ke2 Qc1 43.Nd5 Qc2 44.Ke1 Qb1 45.Ke2 Qd3 46.Ke1 Rg1 47.Rf1 Rf1) 0–1. Fischer,A – Reeh,O, corr, 1989.

6.Be2 0-0 7.0-0 a6 8.c4 Nc6 9.Qc2 Bg4 10.Nc3 Re8 11.h3 Bd7 12.d3 Qc8 13.Nh2 Ne7 14.e4 Bh6 15.Bc1 Bc1 16.Qc1 Kg7 17.f4 h6 18.g4 Rh8 19.f5 g5 20.Nf3 Qg8 21.Ng5+/- hg5 22.Qg5 Kf8 23.Qf6 Rh3 24.Kg2 Qh8 25.Qh8+- Rh8 26.Rh1 Kg7 27.g5 Nc6 28.Nd5 Nd4 29.Nc7 Rh1+/- 30.Rh1 Rc8 31.f6 Kg8?? 32.Nd5+- Ne2 33.Ne7 (33…Kf8 34.Rh8#) 1–0. Von Herman,Andrea – Schwarz,Eva, BL, 1994.

6.Be2 0-0 7.0-0 Re8 8.c4 Nbd7 9.d3 c6 10.Qc2 Qe7 11.Rd1 h5 12.Nbd2 Nh7 13.Rac1 f5 14.c5 d5 15.e4 Ndf8 16.ed5+/- cd5 17.Qb3 Qf7 18.d4 e4 19.Ne5 Be5 20.de5 Be6 21.Bb5 Red8 22.c6 d4 23.Qa4 bc6 24.Bc6 Rab8 25.b5 d3 26.Bd4 Rd4? 27.Qd4+- h4 28.f3 ef3 29.Nf3 g5 30.Qd3 Ng6 31.Qd6 Re8 32.Be8 (32…Qe8 33.Qd8+-) 1–0. pierre – siopaoman, internet, 2006.

6.Be2 0-0 7.d3 Nbd7 8.c4 Qe7 9.Nc3 c6 10.0-0 Re8 11.Rc1 Nf8 12.h3 h6 13.d4 e4 14.Nd2+= b6 15.Qb3 g5 16.Bd1 Bf5+= 17.Bc2 Bh7 18.Rfe1 N8d7+= 19.Qa4 Rec8 20.Qa6 Rc7 21.Bb3 Re8 22.Qa4 Nf8 23.d5 cd5 24.Nb5+/- Rd7 25.cd5 g4 26.Bf6 Bf6 27.hg4 Be5 28.Nc4 Qh4 29.Ne5 Re5 30.Na7+/- Qg4 31.Bd1 Qh4 (31...Qf5 32.Nc8 b5 33.Qc2+-) ½–½. Trokenheim,Marek – Kreuzer,Uwe, corr 2.KGP–Z–01, 1993.

6.Be2 0-0 7.d3 Be6 8.c4 Nbd7 9.0-0 c5 10.b5 b6 11.Nbd2 Qc7 12.a4 a5 13.ba6 Ra6 14.Bc3 Rfa8 15.Qc2 Qc6 16.Rfb1 Ra4 17.Ra4 Ra4 18.Bd1 Ra6 19.Qb2 Qa8 20.e4 Ne8 21.Ng5 Nc7 22.Ne6 Ne6 23.Nf3 Nd4 24.Nd4 ed4 25.Bd2 Ne5 26.Bc2 Nc6 27.Qb5 Ra2 28.Rb2 Rb2 29.Qb2= Qa6 30.g3 Na5 31.Kg2 h5 32.f4 Kf8 33.Kf3 Ke7 34.Qb5 Qb5 35.cb5 Nb7 36.Bb3 f6 37.Bd5 Nd8 38.h3 Bh6 39.g4 hg4 40.hg4 Ne6?? 41.Be6+- Ke6? 42.g5?? fg5–+ 43.fg5 Bg7 44.Kg4 Be5 45.Bf4?? Kd7 46.Be5?? de5 47.Kf3 Ke6 48.Ke2 Kd6 49.Kd2 Ke6 50.Kc2?? Kd6 51.Kb3 Ke6 52.Kc4 Kd6 53.Kb3 Ke6 54.Kc2?? Kd6 55.Kd2 Ke6 56.Ke2 Kd6 57.Kd2= ½–½. Fournier,Frederic (1685) – elfeliz, Active, 2006.

5.d3 g6 (5...Be7 6.e3=+) 6.c4 Bg7 7.Nbd2 b6 8.Be5?? (8.e4=) 8...Bb7?? (better 8...Ne5 9.e3 Nf3 10.Nf3 0-0-+) 9.Bb2+/- 0-0 10.Qc2 Re8 11.e3 c5 12.Be2 Rc8 13.b5 d5 14.cd5 Bd5 15.e4 Bb7 16.Rb1 Nh5 17.0-0 Nf4 18.Bd1 (18.Nc4 Bb2 19.Rb2 Nf6+/-) 18...Qe7 (18...Nf6 19.Ne1+=) 19.Bg7+/- Kg7 20.Qc3 f6 21.g3 Ne6 22.Nc4 White prepares e5 22...Rcd8 23.e5 (better 23.Re1+/-) 23...Bf3=+ 24.Bf3 Nd4 25.Bc6?? (better 25.Kg2=+) 25...Ne5 (25...Ne2 26.Kg2 Nc3 27.Rbc1-+) 26.Ne5?? (26.Kg2 Nec6 27.bc6-+) 26...Ne2 27.Kh1 Nc3 (27...Qe5?! 28.Qc4 Re7 29.Rbe1-/+; 27...fe5 28.Qe1 Nd4 29.Be8 Qe8 30.a4+/-) 28.Nc4 (28.Be8 Nb1 29.Rb1 Qe8-+) 28...Nb1 29.Rb1 (29.Be8 Qe8 30.Rb1 Qe2-+) 29...Rf8 30.Rg1 (30.Kg2 Rd3 31.h4 Rfd8-+) 30...Rd3 31.Rg2 (31.Ne3 Rfd8-+) 31...Qe1 32.Rg1 Qf2 33.Bg2 Re8 34.Nd6 (34.h3 Re1 35.Re1 Qe1 36.Bf1 Qf1 37.Kh2 Qe2 38.Kg1 Rd1) 34...Re1 35.Ne4 (35.Nf5 gf5 36.Bf1 Rf1 37.Rf1 Qf1) 35…Rg1 (35...Qg1) 0-1. memaurice (2030) - opperwezen (2825), lichess.org, 2018.

5.d4 e4 6.Nfd2 e3 7.fe3 Ng4 (7...d5 8.c4=+) 8.Nf3 (8.e4 a5=) 8...Qe7 9.Qd2 (9.e4 Ndf6 10.e5 Ne4 11.ed6 Qd6=) 9...Ne3 (9...Nb6 10.e4 Qe4 11.Nc3=+) 10.Nc3 (10.Bc1 Nf1 11.Rf1 Nb6=+) 10...Nb6-/+ 11.Qd3?? (better 11.Nd1 Nec4 12.Qd3-/+) 11...Bf5-+ 12.Rb1 (12.Qd2 Nbc4 13.Qc1 Nb2 14.Qb2 Nc2 15.Kd1 Na1 16.e4-+) 12...Bd3 13.ed3 (13.cd3 Nc2 14.Kd2 Ne3-+) 13...g6 14.Kf2 Ng4 (better 14...Nc2!? 15.Rc1 Qe3 16.Kg3-+) 15.Kg3 Ne3 (better 15...f5 16.Re1 Ne3 17.Kf2-+) 16.Bc1?? (16.Kf2 Nc2 17.Rc1 Qe3 18.Kg3-+) 16...Nf1 (better 16...Nc2!? 17.Bg5 f6 18.Rc1 Na3 19.Re1 Qe1 20.Ne1 fg5 21.Na2-+) 17.Rf1 0-0-0 18.Bg5 (18.Re1 Qd7 19.Bg5 Re8 20.Re8 Qe8-+) 18...f6 19.Bh4 (19.Rbe1 Qg7 20.Be3 d5-+) 19...g5 20.Kf2 gh4 21.h3 (21.Nh4 d5-+) 21...Qf7 (21...Rg8 22.Kg1-+) 22.b5 (22.Rbe1 Rg8 23.Nh4 Qg7-+) 22...d5 23.a4 Bd6 (23...Rg8 24.Kg1-+) 24.a5 Nd7 25.b6 (25.Kg1 Rhg8-+) 25...ab6 26.ab6 Nb6 27.Nb5 Rhg8 28.c4 (28.Nd6 Rd6 29.Nh4 Rc6-+) 28...dc4 (28...Qg6 29.Nd6 Rd6 30.Rg1 Qg3 31.Kf1-+) 29.dc4 Bg3 (better 29...Qg6!? 30.Nd6 Rd6 31.g4 hg3 32.Kg1 Nc4 33.Rbe1-+) 30.Kg1 Qc4 31.Rfc1 Qd5 (better 31...Qa2 32.Kh1 Bf4 33.Nh4 Rg3 34.Rc7 Kb8-+) 32.Rc7 Bc7 33.Nc7 Kc7 (33...Qf3! 34.g4 hg3 35.Rf1 Qe3 36.Kg2 Qe2 37.Rf2 Qf2 38.Kh1 Qf1) 34.Rc1 Kb8 35.Rb1 Qf3 36.Rb2 (36.g4 hg3 37.Rf1 Qe3 38.Kg2 Qe2 39.Rf2 Qf2 40.Kh1 Qf1) 36...Rd4 37.Rf2 (37.Re2 Rd1 38.Re1 Qg2) 37...Rd1 38.Kh2 (38.Rf1 Qg2) 38…Qg3 (38...Qf2?!) 0-1. barakeomala (2110) - opperwezen (2775), lichess.org, 2019. (=1.a3 Nf6 2.b4 d6 3.Nf3 e5 4.Bb2 Nbd7)

5.d4 Be7 6.de5+= de5 7.Ne5 Ne5 8.Qd8 Bd8 (8...Kd8 9.Be5 a5 10.b5+/-) 9.Be5+/- 0-0 10.g3 Re8 11.Bb2 c5 12.Bg2 cb4 13.ab4 Be7 14.0-0 (better 14.c3!?+/-) 14...Bb4= 15.Na3 (15.Bf6 gf6 16.e3=) 15...Bf5 (better 15...Re2!? 16.Bf6 gf6=+) 16.Nb5 (better 16.Bf6 gf6 17.Bb7+/-) 16...Bc2? (better 16...Re7+=) 17.Nc7 Rac8 (17...a5 18.Na8 Ra8 19.Bf6 gf6 20.Bb7+-) 18.Ne8 Re8 19.Ra7 Re2 20.Rb7 Bf8 21.Bf6 gf6 22.Bf3 Re7 (22...Rd2 23.Bh5+-) 23.Kg2 Rb7 24.Bb7 Bb3 25.Rb1 Be6 26.Bf3 Kg7 27.Re1 Bd6 28.Re4 f5 29.Ra4 Kf6 30.Ra5 Bc7 31.Rb5 h6 32.Bd5 Be5 33.Be6 fe6 34.f4 Bd4 35.Kf3 Bg1 36.h3 Ba7 37.g4 fg4 38.hg4 Bg1 (38...Bd4 39.Ke4 Ba1 40.Rb6+-) 39.Ke4 Bh2 (39...Ba7+-) 40.Rh5 Kg6 (40...Bg3 41.Rh6 Kf7+-) 41.Rh2 e5 42.Ke5 (42.Ke5 Kf7 43.f5 Ke7 44.f6 Kf7 45.Rh5 Ke8 46.Ke6 Kd8 47.Rc5 h5 48.gh5 Ke8 49.Rc8) 1-0. black_bishop_88 (2520) - exSelNick (2510), lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6)

5.e3= g6 (5...Be7 6.Be2= Nb6 (6...a6 7.0-0 0-0 8.c4 e4 9.Nd4 Nb6 10.d3 c5 11.Nb3 Na4=; 6...c6 7.0-0 0-0 8.c4 e4 9.Nd4 Nb6 10.d3 c5 11.Nb3 Na4=; 6...0-0 7.0-0 a5 8.b5 Re8 9.d3 Nb6 10.c4 a4 11.Nc3 Bg4=) 7.Nc3 e4 8.Nd4 c5 9.Nb3 cb4 10.ab4 d5 11.Nc5 0-0=; 5...e4 6.Nd4 c5 7.Nf5 d5 8.bc5 Nc5 9.Bb5 Bd7 10.Nc3 a6 11.Bd7 Qd7+=) 6.Be2 (6.Bb5 Bg7 7.0-0 0-0 8.Nc3 a6 9.Be2 c5 10.d3 Qb6 11.Na4 Qc6=) 6...Bg7 (6...e4 7.Nd4 Bg7 8.0-0 c5 9.Nb3 Qe7 10.f3 ef3 11.Rf3 0-0=) 7.d3 (7.d4 e4 8.Nfd2 0-0= 9.c4 c5 10.0-0 Re8 11.Qc2 Qe7+=) 7...0-0 (7...a5 8.0-0 (8.c4= ab4 9.ab4 Ra1 10.Ba1 0-0 11.0-0 Qe7=) 8...Qe7 9.c4 0-0 10.Nc3 Nb6 11.Qd2 ab4=) 8.Nbd2 (8.0-0 a5= 9.c4 ab4 10.ab4 Ra1 11.Ba1 Qe7=) 8...Re8 (8...Nb6 9.c4= Qd7 10.Rb1 Na4 11.Ba1 a5=) 9.0-0 (9.c4 a5= (9...Nb6 10.0-0 Qd7 11.a4 a5=) 10.0-0 Qe7 11.Qc2 Nb6=) 9...h6 (9...d5 10.c4= e4 11.Nd4 c5=; 9...Nb6 10.c4 Bd7 11.a4 a5=) 10.Nb3 (10.c4 Qe7= (10...a5 11.Qc2 Nb6=) 11.d4 e4=) 10...Nh7 (10...Nb6 11.Rc1= (11.Rb1 Na4=) 11...Na4=) 11.Nfd2 (11.d4 e4= (11...Ng5=); 11.e4 Ng5=) 11...f5 (11...Nb6 12.Rb1=) 12.f4 (12.d4 Ng5=) 12...Nhf6 (12...Nb6 13.Ra2=) 13.Bf3 c6 14.Nc4 Nb6 (14...ef4 15.ef4 Nb6 16.Re1=) 15.fe5 Nc4 16.dc4 Ne4 (16...de5 17.Qd8 Rd8 18.Be5+=) 17.Be4+= fe4 18.Qd2 (18.Rb1 de5 19.Qe1 Be6+=) 18...Be6= 19.Na5 (19.Rfb1 A) worse is 19...Bc4 20.Na5 (20.Qd6?! Bb3 21.cb3 Qd6 22.ed6 Rad8+=) 20...d5 21.Nb7+/-; B) 19...d5=) 19...Qd7 20.Rad1 b6 21.Nb3 (21.Qd6 Qd6 22.ed6 Bb2 23.Nc6 Bc4+=) 21...Bc4 22.Rf4 (22.Qd6 Qd6 23.Rd6 Bf1 24.Kf1 Kh7+=) 22...d5 (22...Bd5 23.e6 Re6 24.Bg7 Qg7 25.b5=) 23.Re4= Bb3 (23...Qe6 24.Nd4 Qc8 25.Rh4=) 24.cb3 Qe6 25.Rh4 Rad8 26.Bd4 g5 27.Rh3 Qg4 28.Rc1 Re6 29.Rf3 Rf8 30.h3 Qh5 31.Rf8+/- Kf8 32.Rf1 Kg8 33.Rf5 Qh4 34.Qf2 Qf2 35.Kf2+/- a6 36.Kf3 c5 37.bc5+- bc5 38.Bc5 Be5 39.Bd4 Bd4 40.ed4 Rc6 41.Rd5 Rc3 42.Ke4 Rb3 43.Ra5 Rb6 44.Rf5 Rb3 45.Rf3 Rb6 46.d5 1–0. Pohl,Klaus A (2270) – Shaw,Tenzing (2130), US Masters, Hendersonville USA, 2006.

5.Nc3 0-0 6.b5 Bd7 7.e4 a6 8.a4 c6 9.d4 Bg4 (9...Qa5!? 10.de5 de5=+) 10.de5+= de5 (10...Bf3!? 11.Qf3 de5+=) 11.Qd8+/- Rd8 12.Ne5 cb5 (12...ab5!? 13.Ng4 Ng4 14.ab5 Ra1 15.Ba1 Nd7+/-) 13.Ng4+- Ng4 14.Be2 Ne5 (14...h5 15.ab5 Bb4 16.Kf1+-) 15.Nd5 Ng6 16.Nc7 Ra7 17.ab5 a5? 18.b6 Rd7 19.ba7 Rc7 20.ab8Q (20...Bf8 21.Qc7+-) 1–0. b4_player (2165) – setform, GameColony.com, 2003.

5.Nc3 0-0 6.Rg1 Nbd7 (6...e4 7.Nd4-/+) 7.e3 d5 8.g4 e4 (8...c6 9.g5 Ne8 10.h4=+) 9.Nd4 c6 10.g5 Ne8 11.h4 Ne5 12.Be2 Nc4 (better 12...a5!? 13.ba5 Qa5=+) 13.Bc4+= dc4 14.Qe2 (better 14.Ne4!? Nd6 15.Nc5+=) 14...Nd6=+ 15.0-0-0 (15.f3!? ef3 16.Qf3=+) 15...a5-/+ 16.b5? (better 16.ba5 Ra5 17.a4-/+) 16...cb5?? (better 16...c5-+) 17.Ncb5 Nb5 18.Nb5 Qb6 (better 18...Be6=) 19.Nc3?? (better 19.Qc4!? Bd7 20.Qe4 Qb5 21.Qe7+-) 19...Be6 (19...Qc6 20.a4-/+) 20.h5 (20.Ne4 Qc6 21.f3=) 20...Qc7?? (better 20...Qc6 21.Qf1 b5-/+) 21.h6+= g6 22.Ne4 b5 (22...Qc6 23.f3+=) 23.Qf3+/- c3 24.Bc3 (24.dc3!? Bc4 25.Nf6 Kh8 26.Nd7+-) 24...Ba3+= 25.Kb1 f5? (25...Qc4 26.Nf6 Kh8 27.Nd5 f6 28.e4 Bd5 29.Bf6 Kg8 30.Qa3 Qe4 31.Rge1+/-) 26.gf6 (26.Nf6 Kf7 27.Nh7 Rfe8+-) 26...Rf7? (better 26...Bf7 27.d3 Qc6=) 27.Ng5+- Bc4?? (better 27...Re8 28.Nf7 Kf7+-) 28.Nf7 (better 28.Qa8 Rf8 29.Qe4 Bf7+-) 28...Bf7 (28...Re8 29.Nh8 Bf7 30.Nf7 Qf7 31.Rg5+-) 29.Qa8 Bf8 30.Qa5 Qc4 31.f3 (31.d3!? Qc5+-) 31...b4 32.Rg4 Qe2 33.Rb4 (33.Bb4 Qd1 34.Kb2 Qf3 35.Qd8+-) 33...Qd1 34.Kb2 Qf3 35.Rb8 Qh3 36.Qd8 (36.Rf8 Kf8 37.Qd8 Be8 38.Qe7 Kg8 39.Qe8) 36...Qh6 (36...Qc8 37.Qc8 Be8 38.Qe8 g5 39.Qf8) 37.Bb4 Qg7 (37...Kh8 38.Bf8 Bg8 39.Bh6 g5 40.Qg8) 38.Bf8 (38.Qf8 Qf8 39.Rf8) 38...Qf6 (38...h5 39.Bg7 Be8 40.Qe8 Kh7 41.Qg8) 39.Qf6 Bc4 (39...Bd5 40.Bd6) 40.Qg7 (40.Bd6) 1-0. black_bishop_88 (2510) - SmokedGray (2495), lichess.org, 2020. (=1.a3 d6 2.b4 Nf6 3.Bb2 e5 4.Nf3 Be7)

5.d3 Bg4 6.e4 0-0 7.Be2 Nbd7 8.0-0 a6 9.Nbd2 c5 10.h3 Bh5 11.Nh4 Be2 12.Qe2 Rc8 13.c3 b6 14.Nhf3 Nh5 15.g3 f5 16.Ne5 Ne5 (worse is 16...de5 17.Qh5 b5 18.ef5=) 17.Qh5 Nd3 18.Bc1 g6 19.Qe2 Ne5 20.f4 Nf7 21.Qa6 Qd7 22.Kg2 fe4 23.Ne4 Qc6 24.Qd3 Rce8 25.Kg1 c4 26.Qf3 d5 27.Nd2 Ng5 28.Qg2 Ne4 29.Ne4 de4 30.Bb2 Bf6 31.Rfe1 The isolani on e4 becomes a target 31...Rf7 32.Re2 Rfe7 33.Rae1 h5 34.h4 Kh7 35.Re3 Qd5 36.a4 Qa8 37.Ra1 Ra7 38.Qc2 Rd7 39.a5 b5 40.Rae1 Qa7 41.Kh2 Rd3 42.Qc1 Red8 43.R3e2 Rf3 44.Rf1 Rdd3 45.Qe1 Rg3 46.Qg3 Rg3 47.Kg3 Qe7?? 48.Rh1 Qe6 49.Kf2 Qg4 50.Re4 Bh4 51.Ke3 Qg2 52.Rh4 Qg3 53.Kd4 Qh4 54.Bc1 Qd8 55.Kc5 Qb8 56.Re7 Kg8 57.a6? h4?? 58.Rb7?? Qa8 59.Kb6 h3 60.a7 Qa7 61.Ra7 h2 62.Kb5 h1Q 63.Ra1?? Qd5–/+ 64.Kb6 Qd3 65.Bb2 Kf7 66.Kc5 Ke7 67.Ra7 Kd8 68.Ra6 Kc7 69.b5 Qf5 70.Kc4 Qf4 71.Kd5?? Qd2–+ 72.Kc4 Qb2 0–1. Sen,Burak – Canturk,Murat, ch–TUR, 2012.

5.d4 ed4 6.Qd4 0-0 7.e3 Nc6 8.Qd2 (8.Qf4 d5 9.Ne5 Qe8 10.Nc6 Qc6=) 8...Bf5 (8...Ne4 9.Qd5 Bf6 10.c3=) 9.Bd3 Ne4 10.Qe2 Bf6 11.c3 Re8 12.0-0 Qd7 13.c4 Ng3 14.hg3 Bd3 15.Qd3 Bb2 16.Ng5?? (16.Ra2 Bf6=+) 16...g6 (better 16...Ba1 17.Qh7 Kf8-+) 17.Ra2=+ Bg7 18.Nd2 Ne5 19.Qb3 a6 20.Ngf3 Nf3 21.Nf3 Re4 22.Rc1 White prepares c5 22...Rd8 23.Rac2 h5 24.c5 dc5 25.Rc5 (better 25.Rd2!? Qc8 26.Rd8 Qd8 27.bc5+=) 25...c6=+ 26.Ng5 Re5 27.Re5 Be5 28.Ne4 Qd5 (28...Qd3 29.Qd3 Rd3 30.Nc5 Ra3 31.Nb7=+) 29.Qd5 Rd5 30.Nc5 Bb2 31.Rc4 Ba3 32.Nb7 Rb5 33.Nd8 Bb4 34.Nc6 Bf8 35.Ra4 Rb6 36.Nd4 Bb4 37.Kh2 Kg7 38.Kh3 a5 (38...f5 39.f3-/+) 39.g4=+ hg4 40.Kg4 Kf6 (40...Be1 41.Ra2=+) 41.Nc2 (41.Kf4 Bc3=) 41...Ke6 42.Kf4 f5 (42...Kd5 43.g4=+) 43.e4 (43.Nd4 Kf6=) 43...fe4 44.Ke4 Kf6 45.Ne3 Re6 46.Kd4 Rd6 47.Nd5?? (better 47.Ke4 Ke6 48.Nc4=) 47...Ke6-+ 48.Ke4 Rd5 49.Ra2 Re5 50.Kf4 Bd6 51.Kg4 Kf6 (51...Re4 52.Kf3 Rf4 53.Ke3-+) 52.f4 (52.g3 Bb4-+) 52...Rb5 53.g3 Bb4 (53...g5!? 54.Kf3-+) 54.Kf3 Rc5 55.g4 Rc3 56.Ke4 (56.Kg2 Rc4 57.Kf3 g5 58.fg5 Kg5-+) 56...Ra3 (better 56...g5!? 57.fg5 Kg5 58.Kd4-+) 57.Rc2 a4 58.Rc6 Kf7 59.f5 gf5 60.Kf5 Be7 61.Ra6 Ra1 62.g5 (62.Ke4 Rg1-+) 62...a3 63.g6 Ke8 (63...Kg7!? 64.Ra7 Rf1 65.Ke4 Kg6 66.Kd3-+) 64.Ke6?? (better 64.Ra8 Bd8 65.Ke6-+) 64...Re1 65.Kd5 Rg1 (better 65...Kf8!? 66.Kc4-+) 66.Ra8 Kd7 67.Ra7 Ke8 (better 67...Kd8 68.Ra8 Kc7-+) 68.Ra8=+ Kd7 69.Ra6?? (69.Ra7 Kd8 70.Ra8 Kc7-+) 69...Ke8 (better 69...Rg5 70.Kc4 Bd6-+) 70.Ke6?? (70.Ra8 Bd8 71.Ra3 Rg5 72.Kc4 Rg6 73.Ra7=+) 70...Rg6 71.Kd5 Ra6 72.Kc4 (72.Ke4 a2 73.Kf4 Ra4 74.Ke3 a1Q 75.Kd2 Qb2 76.Kd3 Qb3 77.Ke2 Ra2 78.Ke1 Qb1) 72...a2 73.Kb5 (73.Kd4 a1Q 74.Kd3 Qa3 75.Kd2 Rb6 76.Ke1 Rb2 77.Kd1 Qa1) 73...a1Q 74.Kc4 Qa5 (74...Ra4 75.Kb5 Kd7 76.Kb6 Qb2) 75.Kd4 (75.Kd3 Qd5 76.Ke3 Ra3 77.Kf4 Rf3 78.Kg4 Qf5) 75...Rb6 (75...Qd2 76.Ke4 Ra4 77.Kf3 Qd3 78.Kf2 Ra2 79.Ke1 Bb4) 76.Ke4 (76.Ke3 Qa3 77.Ke4 Rb4 78.Ke5 Qe3 79.Kd5 Qe4) 76...Rb4 77.Kf3 (77.Kd3 Qa3 78.Ke2 Rb2 79.Ke1 Qa1) 77...Qa3 78.Kg2 (78.Ke2 Rb2 79.Ke1 Qa1) 78…Rb2 (78...Rb2 79.Kf1 Qa1) 0-1. black_bishop_88 (2590) - Karlos_ulsk (2565), lichess.org, 2020. (=1.a3 d6 2.b4 e5 3.Bb2 Nf6 4.Nf3 Be7)

5.d4 ed4 6.Nd4 0-0 7.Nd2 Nc6 (7...a6 8.c4=) 8.e3 Nd4 9.Bd4 c5 10.bc5 dc5 11.Bb2 Qc7 12.Bd3 Rd8 13.Qe2 a6 14.Ne4? (better 14.Rd1=+) 14...b5?? (better 14...c4 15.Nf6 Bf6 16.Bf6 cd3 17.cd3 gf6-+) 15.Nf6+= Bf6 16.Bf6 gf6 17.Qh5 f5 18.Bf5 (18.0-0!?+/-) 18...Bf5+= 19.Qf5 Rd6 (19...Qa5 20.Ke2+=) 20.0-0+/- Rad8 21.Qg5 (21.c4!?+/-) 21...Rg6= 22.Qf4 (22.Qh4 Rd2+=) 22...Qc6 (better 22...Qf4!? 23.ef4 Rgd6=+) 23.g3 Rgd6 24.Qg4 Rg6 25.Qf4 Rgd6 26.h4 (26.c4 Rd2+/-) 26...c4= 27.h5 Kg7 28.Qg5 Kh8 29.Qf5 (29.a4 b4+=) 29...Rf6 (29...Qd5 30.Qd5 Rd5 31.e4 Rh5 32.Rad1=) 30.Qg5 (30.Qg4 Rg8 31.Qe2 Rg5=) 30...Rd5= 31.Qg4 Qd6 (31...Rh6 32.Rad1 Rhh5 33.e4 Rd1 34.Rd1=) 32.a4 b4 (32...Qe6 33.Qe6 Re6 34.ab5 ab5 35.Rfd1 Rh5 36.c3+=) 33.a5 (33.Rad1 Qe6 34.Qe6 fe6 (34...Re6?? 35.Rd5 Rc6 36.Rb1+-) 35.Rd5 ed5+/-) 33...c3 (33...Qc5+=) 34.Qc4 (better 34.Rab1 Qc5 35.Rb4+/-) 34...Rh5= 35.Qc8 Kg7 36.Qg4 Kh6 37.Rad1 (37.Rfe1 Rg6 38.Qf3 Rhg5=+) 37...Qc6 38.e4 Rg6 39.Qf3 Qe6 40.Rd5 Qh3 (better 40...Rd5 41.ed5 Qe5=) 41.Rh5+/- Qh5 42.Qf4?? (42.Qf7 Qe5 43.Qf8 Kh5 44.Rb1+- (44.Qb4?! Rg3 45.fg3 Qg3 46.Kh1 Qh3 47.Kg1 Qg3 48.Kh1 Qh3 49.Kg1 Qg3=)) 42...Kg7-/+ 43.Kg2 Rh6 44.Rg1?? (better 44.Qh4 Qa5 45.Qg4 Rg6 46.Qf3-/+) 44...Qh3-+ (44...Qa5?! 45.Qg4 Rg6 46.Qf3-/+) 45.Kf3 Qh5 (better 45...Rf6 46.Qf6 Kf6-+) 46.Qg4 (46.Kg2 b3 47.Qe3 Qh2 48.Kf1 b2-+) 46...Qg4=+ 47.Kg4 Rc6 48.f4 (48.Rb1 Rc5 49.Rb4 Ra5+/-) 48...b3 (48...h5!? 49.Kh4 Rc5=+) 49.cb3= c2 50.Rc1 Rc3 51.e5 Kf8 52.b4 Ke7 53.b5 (53.f5!?+=) 53...ab5= 54.a6 Rb3?? (54...Rc7 55.a7 Ra7 56.Rc2=) 55.a7?? (better 55.Rc2 Ra3 56.Rc7 Ke6 57.Rc6 Kd5 58.Rh6+-) 55...b4?? (better 55...Ra3+=) 56.Rc2 (better 56.a8Q Rc3 57.Qb7 Ke8 58.Qb5 Kd8 59.Qb4+-) 56...Ra3 57.Rc7 Ke6 58.Rb7 Kd5? (58...b3+-) 59.Rb5 (better 59.Rf7 b3 60.Rb7+-) 59...Kc4= 60.Rb4?? (better 60.a8Q Ra8 61.Rb7=) 60...Kb4-+ 61.e6 (61.Kg5 Ra7 62.Kf6 Kc5-+) 61...Ra7 (better 61...fe6!? 62.a8Q Ra8 63.Kh4-+) 62.ef7 (62.ef7 Rf7 63.f5-+). black_bishop_88 (2555) - sorriemerria (2435), lichess.org, 2020. (=1.a3 e5 2.b4 d6 3.Bb2 Nf6 4.Nf3 Be7)

5.d4 ed4 6.Nd4 0-0 7.g3 c6 (7...c5 8.Nf3=+) 8.Bg2= d5 9.Bf1 (9.0-0 a5 10.b5 c5=+) 9...Nbd7 10.Bg2 Nb6 11.0-0 Nc4 12.Qc1 Re8 13.Nd2 Nb2 14.Qb2 Bd6 (14...Qb6 15.c4-/+) 15.e3 Bd7 16.c4 dc4 (16...Qe7 17.cd5 Nd5 18.Nc4=) 17.Nc4 Bf8 18.Rfd1 Qc7 19.Rac1 a6 20.Na5 Rad8 21.Ndb3 Ne4 22.Qc2 Bf5?? (22...Nd6 23.Nc5=) 23.Qe2?? (23.Rd8 Qd8 24.Nb7 Qf6+-) 23...g6?? (better 23...Be7=+) 24.Rd8+- Rd8 (better 24...Qd8 25.Nb7 Qb6+-) 25.Nd4?? (better 25.g4 Bg4 26.Qg4+-) 25...Bc8?? (better 25...Nd6=) 26.Be4+- Re8 27.Bg2 Bg7 28.Qc2 Bg4 (28...Rd8 29.Nab3+-) 29.Nb7! Qb7 30.Bc6 (30.Qc6?! Qc6 31.Bc6 Rd8+-; 30.Nc6?! Qd7+-) 30...Qe7 31.Be8 Qe8 32.Qc6 Qe7 (32...Qd8 33.Rc4+-) 33.a4 (better 33.Qa8!? Qf8 34.Qf8 Kf8+-) 33...Qb4 34.Qa8 Bf8 35.Rc8 (better 35.Qa6 Qa3 36.Qc4+-) 35...Bc8= 36.Qc8 Qa4 37.Nc6 Qa1 38.Kg2 Qg7 (38...a5 39.Qe8=) 39.Qd7 (39.Ne7 Kh8 40.Nd5 f5+/-) 39...a5 (better 39...Qc3!?=) 40.Na5+/- h6 41.Nc6 (41.Qd5 Ba3+/-) 41...Kh7 (41...f5 42.Qc8 Qf7 43.h4+/-) 42.Qd5 Qg8 (42...f5 43.Nd4+/-) 43.Qd3 (43.Ne5 Kg7+-) 43...Qg7 (43...f5 44.Qd7 Qg7 45.Qe8+/-) 44.Nd4 (44.e4 Qf6 45.Qd7 Bc5+-) 44...Kg8 45.Qe4 Be7?? (45...Qf6 46.h3+/-) 46.Nf3 (better 46.Qe7 Qf8 47.Qe5+-) 46...Bf6 47.Qa8 Kh7 48.Qe4 h5 (48...Kg8 49.Qd5 Bc3+/-) 49.Ne5?? (49.h3 Qf8+/-) 49...Kg8?? (better 49...Be5 50.Qd5 f5-+) 50.f4 Kh7 51.Ng6?? (better 51.Nc6+/-) 51...Be5?? (better 51...Qg6!? 52.Qd5 h4-/+) 52.f5 (better 52.Ne5 Kh6 53.Qf5+-) 52...Bf6?? (better 52...fg6 53.fg6 Kh6=) 53.Nh4 (53.Nf4 Qg4+-) 53...Bh4 (53...Qg4 54.Qf3 Kh6+-) 54.Qf3?? (54.Qh4!? Qh6+-) 54...Qh6?? (better 54...Kh6-/+) 55.Qh5?? (better 55.gh4 Kg7 56.Kf2+-) 55...Qh5-+ 56.gh4 Qe2 57.Kg3 Qe3 58.Kg4 Qe4 59.Kg5 Qe5 60.h5 (60.Kg4 Kh6 61.h5 Qh2-+) 60…Qd4 (60...Qd4 61.f6 Qg1 62.Kf5 Qh2-+) 0-1. black_bishop_88 (2520) - IamyourFather (2445), lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6)

5.d4 e4 6.Nfd2 Bf5 7.e3 0-0 8.c4 a5 9.Nc3 c6 10.Be2 Re8 (10...ab4 11.ab4 Ra1 12.Qa1=) 11.g4+= Bg6 (11...Bc8 12.g5 (12.Nde4?! Ne4 13.Ne4 ab4=; 12.Nce4?! Ne4 13.Ne4 ab4=) 12...Nfd7 13.b5+=) 12.g5 (12.h4!? h5 13.g5 ab4 14.ab4 (14.gf6?! bc3 15.Bc3 Bf6=) 14...Ra1 15.Ba1+/-) 12...Nfd7= 13.h4 Bf8 (better 13...ab4!? 14.ab4 Ra1 15.Ba1 Bf5=) 14.Bg4+/- ab4 15.ab4 Ra1 16.Ba1 d5 (better 16...h6!?+=) 17.h5+- f5 (better 17...Bf5 18.Bf5 Qg5+-) 18.hg6 fg4 19.gh7 (19.cd5!? h6 20.dc6 Nc6+-) 19...Kh8 20.Qg4 (better 20.cd5!? Bb4 21.dc6 Nc6 22.Qg4+- (22.Nce4 Re4 23.Ke2 Bd2-/+)) 20...Bb4+/- 21.cd5 (21.Ke2+/-) 21...Bc3? (better 21...Qa5 22.0-0 Bc3 23.Bc3 Qc3 24.Ne4 Qa5 25.dc6 Nc6+=) 22.Bc3+- cd5 23.Nf1 (23.Qh5 Re6+/-) 23...Qc7 24.Bd2 Qc2 25.Ng3 Qb1 (25...Nc6!? 26.Qd1 Qd1 27.Kd1 Rf8+/-) 26.Qd1+/- Qd1 27.Kd1 g6 28.Bb4 (28.Ne2!? Nf8 29.Nf4+-) 28...Nc6+/- 29.Bd6 Kg7? (better 29...Re6!? 30.Bc7 Nf8+=) 30.Ne2+- Rh8 (30...Nd8 31.Nc3 Nf7 32.Bf4+-) 31.Nf4 Rh7 32.Rh7 Kh7 33.Nd5 Kg7 34.Nc3 Nb6 (34...Kf7 35.Ne4 Ke6 36.Bg3+-) 35.Ne4 Nc4 36.Bc5 (36.d5 N6a5+-) 36...Kf7 37.d5 Nd8 (37...N6e5 38.Kc2 Nf3 39.Kc3+-) 38.Nd6 Kg7 (38...Nd6 39.Bd6 b5+-) 39.Nc4 1-0. black_bishop_88 (2600) - alimente (2425), lichess.org, 2020. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6)

5.e3 (--> 4.e3 Be7 5.Nf3).

5.g3 0-0 6.Bg2 c6 7.0-0 e4 8.Nd4 Na6 9.c4 d5 (9...c5 10.Nc2=) 10.c5 Nc7 11.d3 Bg4 (11...Re8 12.Nc3 e3 13.h3=) 12.h3 (12.de4 de4 (12...Ne4? 13.f3+-) 13.Nd2 e3 14.fe3 Qe8+=) 12...Bh5 13.Nf5 Bg6 (13...ed3 14.Qd3 Bg6 15.Qf3=) 14.de4+= Ne4 15.Ne7 (15.Be4!? de4 16.Qd8 (16.Ng7? f6-+) 16...Bd8 17.Nd6+= (17.Ng7? f6-+)) 15...Qe7= 16.e3 a5 17.Nc3 ab4 18.ab4 Nc3 19.Bc3 Nb5 20.Qd2 Be4 21.Ra8 Ra8 22.Ra1 Ra1 23.Ba1 Bg2 24.Kg2 Qe4 25.Kh2 h5 26.Qa2 Qb4 27.Qa8 Kh7 28.Qb7 Qe1 (worse 28...Qc5 29.Qf7 d4 30.Bd4 Nd4 31.ed4 Qd4 32.Qh5 Kg8 33.Qe8 Kh7 34.Qc6 Qf2 35.Qg2+/-) 29.Qf7 (29.Qc6 Qf2 30.Kh1 Qf3 31.Kh2 Na3-+) 29...Qa1 30.Qh5 Kg8 31.Qe8 Kh7 32.Qc6 (32.Qh5 Kg8 33.Qe8 Kh7 34.Qh5=) 32...Qb2 (32...Qf1 33.Qd5 Qf2 34.Kh1 Qe3 35.c6=+) 33.Qd5 (better 33.Kg2!? Qb3 34.h4+=) 33...Qf2=+ 34.Qg2 Qe3 35.Qc2 (better 35.c6=+) 35...g6-+ 36.c6 (36.Qc4 Qf2 37.Kh1 Nd4-+) 36...Nd4 37.Qb2 (37.Qa2 Nf3 38.Kg2 Ne5-+) 37...Nf3 (better 37...Ne2!? 38.Qb7 Kh6 39.Kg2 Qg3 40.Kf1 Qf3 41.Ke1-+) 38.Kg2 Ne1 (better 38...Nd2!? 39.g4 Ne4-+) 39.Kf1 (39.Kh2 Qe4 40.c7 Nf3 41.Kg2 Ng5 42.Kg1 Qc6-/+ (42...Nh3?! 43.Kh2 Qc6 44.Kh3 Qc7 45.Qd4=)) 39...Nd3 40.Qe2? (better 40.Qf6 Qg3 41.Qf7 Kh6 42.c7 Qe1 43.Kg2 Qd2 44.Kg1 Qc1 45.Kh2 Qb2 46.Kg1 Qd4 47.Kg2-/+) 40...Qc1-+ 41.Kg2 Qc6 42.Kg1 Qd5 43.h4 Qd4 44.Kg2 Ne5 45.Qf2 Qe4 46.Kf1 Nf3 47.Qe2 Qe2 48.Ke2 Ne5 (48...Nh2!? 49.Ke3 Kh6 50.Ke4-+) 49.Ke3 Nf7 50.Kf4 Kh6 51.Kg4 Nd6 52.h5?? (better 52.Kh3-+) 52...g5 53.Kf3 Kh5 54.Kf2 Kg4 55.Kg2 Ne4 56.Kh2 Ng3 57.Kg2 Nf5 58.Kf2 Kf4 (58...Kf4 59.Ke1 g4 60.Kd2 g3 61.Ke2 Nd4 62.Kd3 Nf3 63.Kc2 g2 64.Kc1 g1Q 65.Kb2 Qe3 66.Kb1 Nd4 67.Ka1 Qc3 68.Ka2 Qb3 69.Ka1 Nc2) 0-1. black_bishop_88 (2655) - SobolRR (2205), Pirates Private Cup, lichess.org, 2020. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.Nf3 Be7)

5.Nc3 Bg7 6.e4 0-0 7.Bb5 c6 8.Ba4 Be6 9.Ng5 Bg4=+ 10.f3 Bd7–/+ 11.h4 h6 12.Nh3 Nh5 13.Nf2 Ng3 14.Rh2 Be6 15.Ne2 Ne2–/+ 16.Qe2 Nd7 17.Bb3=+ Bb3 18.cb3 Qe7 19.Kf1 Nf6 20.g4 Qe6–/+ 21.Qe3 d5 22.d3 d4 23.Qd2 Qb3 24.f4? ef4 25.Bd4 Rfd8 26.Bf6 Bf6 27.Rc1 g5 28.hg5 hg5 29.Rc5 Rd7 30.Rh5–/+ Rad8 31.Rcg5 Bg5 32.Rg5 Kf8 33.Qf4 Rd3 34.Rh5= R3d6?? 35.Qg5+- Qc3 36.e5 Qc4 37.Kg2 Qd5 38.Kh2 Rg6–+ 39.Rh8 Kg7 40.Qd8 Rh6 41.Kg3 0–1. Ivanets,Vladimir (2320) – Szczepaniec,Stanislaw (2125), Wch Seniors Rowy, 2000.

5.c4 Bg7=+ 6.Nc3 0-0 7.e3 (7.e4 Nc6=+) 7...Bf5 (7...e4 8.Ng5=+) 8.Nh4 (8.Be2 Nc6 9.b5 Na5=+) 8...Be6=+ 9.d3 (9.Be2 Nc6=+) 9...e4 10.d4? (better 10.g3–/+) 10...g5–+ 11.d5 Bd7 (11...Bc8 12.Nf3 ef3 13.gf3–+) 12.g3 (12.Nf3 ef3 13.gf3 Re8–+) 12...gh4 13.gh4 (13.Rg1 hg3 14.Rg3 Bf5–+) 13...Bg4 (13...Ng4 14.Qc2 Qh4 15.Rg1–+) 14.Qd2? (14.Be2 Be2 15.Ne2–+) 14...Nbd7 15.Rg1 (15.Nb5 a6 16.Nd4 Ne5–+) 15...Ne5 16.Qc2 (16.Be2–+) 16...Nf3 17.Kd1 Ng1 18.Kc1 Bf5 (better 18...Qe7!? 19.Bg2–+) 19.Bg2 Re8 (19...a5!? 20.ba5 Ra5 21.Kd2–+) 20.Kd2 Nh3 21.Bh3 Bh3 22.Rg1 Bf5 (22...Ng4 23.Ne4 Bb2 24.Ng5–+) 23.Ne2 Bg6 (23...Kf8 24.Rg5 Bg6 25.Nf4–+) 24.Nf4 Nh5 (better 24...Kf8 25.Qb1 a5 26.ba5–+) 25.Ng6 (25.Nh5 Qh4 26.Ng3 Qh2 27.Rf1–+) 25...hg6 26.Bg7 (26.Rg4 Qd7 27.h3 Qf5–+) 26...Ng7 (26...Qh4 27.Kc3 Qh2 28.Rd1 Ng7 29.Kb2–+) 27.Qd1 (27.Rg4 Qf6 28.Rf4 Qe5–+) 27...Qh4 28.Rg2 Qf6 (better 28...Nf5 29.Kc2–+) 29.Qc2 a5 30.b5 c6! 31.a4 (31.bc6 Qf3 Combination; 31.dc6 bc6 Combination) 31...cd5 32.Ke2 Qf3 33.Kf1 Rec8 34.Qd2 Rc4 35.Kg1 Rac8 (35...Rac8 36.h4 Qh3 37.Qd1 Rc1 38.Qf1 Rf1 39.Kf1 Rc1 40.Ke2 Qf3 41.Kd2 Qd1) 0–1. keene2019 (1705) – artamonov (1905), gameknot.com, 2019. (=1.a3 Nf6 2.b4 e5 3.Bb2 d6 4.Nf3 g6)