2…Bf5 3.e3 Nc6 4.b5 Nb8 (--> 2…Nc6 3.b5 Nb8 4.e3 Bf5).

2...g6?? (--> 1.b4 g6 2.Bb2 d5??).

2...Bh3?? 3.Nh3+- e5 4.a3 Bb4 (4...Bd6+-) 5.ab4 e4 (5...Nd7 6.f4+-) 6.c3 (better is 6.Bg7 Qd6 7.c3+-) 6...e3 (6...Nf6 7.d3+-) 7.de3 Nf6 8.g3 Qd6 9.Bg2 Qb4 (9...0-0+-) 10.cb4 d4 11.ed4 (better is 11.Bb7 de3 12.Ba8 a6+-) 11...Nd5 12.Bd5 Na6 13.b5 (13.Bb7 Rd8 14.Bc6 Kf8 15.Ra6 Rc8+-) 13...Nc5 14.dc5 Rd8 15.Bb3 (15.Ra7 Rd5 16.Qd5 0-0 17.Ng5 h6 18.Ra8 hg5 19.Rf8 Kh7 20.Qf5 Kh6 21.Rh8) 15...Rd1 16.Bd1 Ke7 17.0-0 (17.Ra7 f6+-) 17...Rd8 18.Na3 (18.Ra7 Rb8+-) 18...Rd1 19.Rad1 Kf8 20.Nf4 (20.Rd8 Ke7 21.Rfd1 Ke6 22.Nf4 Kf5 23.R1d5 Ke4 24.Re8) 20...f6 21.Nd3 (21.Rd8 Ke7 22.Rfd1 a5 23.R1d7) 21...g5 22.e3 (22.Bf6 Kf7 23.Bg5 Kg6 24.h4 a6 25.Nf4 Kf7 26.Rd7 Kg8 27.Rd8 Kf7 28.Rfd1 ab5 29.R1d7) 22...f5 23.Nc4 f4 24.ef4 gf4 25.Nf4 h5 (25...Ke8 26.Rfe1 Kf8 27.Rd8 Kf7 28.Red1 a5 29.R1d7) 26.Rfe1 (26.Rd8 Ke7 27.Rfd1 a5 28.R1d7) 26...h4 (26...a5 27.Rd8 Kf7 28.Red1 a4 29.R1d7) 27.b6 (27.Rd8 Kf7 28.Red1 hg3 29.R1d7) 27...ab6 (27...hg3 28.Rd8 Kf7 29.Rd7 Kf8 30.Ng6 Kg8 31.Re8) 28.cb6 (28.Rd8 Kf7 29.Red1 hg3 30.R1d7) 28...cb6 (28...Kg8 29.Re8 Kf7 30.Red8 hg3 31.R1d7) 29.Nb6 (29.Rd8 Kf7 30.Nd6) 29...hg3 30.hg3 1–0. Fournier,Frederic (1980) – brayant1 (1685), Owl21.com, 2009.

2…h5 (--> 1.b4 h5 2.Bb2 d5).

(--> 1.b4 b5 2.Bb2 d5).

3.a3 f6 4.Nf3 e5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.Nf3 b5).

3.a4 ba4 4.Ra4 (--> 1.b4 b5 2.a4 ba4 3.Ra4 d5 4.Bb2).

3.e3 a6 (--> 2…a6 3.e3 b5).

3.e3 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 b5).

3.Nf3 e6 (--> 1.b4 d5 2.Bb2 e6 3.Nf3 b5).

(--> 1.b4 b6 2.Bb2 d5).

3.a3 e6 (--> 1.b4 d5 2.Bb2 e6 3.a3 b6).

3.b5 a5 4.e3 Bb7 (--> 1.b4 a5 2.b5 b6 3.e3 Bb7 4.Bb2 d5).

3.b5 Bb7 4.e3 c5 5.d4 Nf6 6.c4 e6 7.Nf3 Nbd7 8.Be2 Bd6 9.0-0 0-0 10.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

3.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 d5).

3.e3 Bb7 4.d4 e6 5.b5 Nf6 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.d4).

3.e3 Bb7 4.Nf3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 d5).

3.e3 Bb7 4.Nf3 e6 5.c4 Nf6 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4).

3.e3 Bb7 4.Nf3 e6 5.c4 Nf6 6.b5 c5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

3.e3 Bb7 4.Nf3 e6 5.Be2 Nf6 6.a3 Be7 7.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5).

3.e3 Bb7 4.Nf3 e6 5.Be2 Nf6 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.Be2).

3.e3 Bb7 4.Nf3 Nf6 5.d4 e6 6.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.d4).

3.e3 Bb7 4.Nf3 Nf6 5.Be2 e6 6.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7 6.Be2).

3.e3 e6 4.a3 Bb7 5.Nf3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 b6 5.Nf3 Bb7).

3.e3 e6 4.Nf3 Nf6 5.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3).

3.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 d5).

3.Nf3 Bb7 4.e3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 d5).

3.Nf3 Bb7 4.e3 e6 5.Be2 Nf6 6.a3 Be7 7.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5).

3.Nf3 e6 (--> 1.b4 d5 2.Bb2 e6 3.Nf3 b6).

(--> 1.b4 f5 2.Bb2 d5).

3.e3 e6 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5).

3.e3 e6 4.c4 c6 5.a4 Nf6 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.a4).

3.e3 e6 4.Nf3 Nf6 5.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3).

3.e3 Nf6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 d5).

3.e3 Nf6 4.c4 e6 5.a3 c6 6.Nf3 Bd6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

3.e3 Nf6 4.c4 e6 5.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3).

3.e3 Nf6 4.Nf3 e6 5.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3).

3.e3 Nf6 4.f4 e6 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.f4 Nf6).

3.Nf3 Nd7 4.a3 Ngf6 5.e3 e6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Nbd7).

3.Nf3 e6 (--> 1.b4 d5 2.Bb2 e6 3.Nf3 f5).

3.Nf3 e6 4.e3 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.Nf3).

3.Nf3 e6 4.e3 Bd6 5.Be2 Nf6 6.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.Be2).

3.Nf3 e6 4.e3 Nf6 5.a3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3).

3.Nf3 Nf6 4.a3 e6 5.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3).

3.Nf3 Nf6 4.e3 e6 (--> 1.b4 d5 2.Bb2 e6 3.e3 f5 4.Nf3 Nf6).

3.a3 Nd7 4.e3 ab4 5.ab4 Ra1 6.Ba1 e5 7.b5 Ngf6 8.c4 c6 (8...dc4 9.Bc4 Bd6 10.d3+=) 9.bc6 bc6 10.Nf3 Bd6 11.Qa4 Qb6 12.Qa2 0-0 13.d4 Bb4 14.Nfd2 Bb7 (14...Re8 15.Be2 Bb7+=) 15.Bb2 (15.de5!? Ne4 16.Bd3+=) 15...Ne4 16.c5 Qc7 17.Qb3 (17.Qa4!? Nd2 18.Nd2 Bd2 19.Kd2+=) 17...Qa5–+ 18.Bc1? (better is 18.Qc2 ed4 19.Bd4 Ndc5 20.f3 Nd2 21.Nd2–+) 18...ed4 19.Ke2 (19.Be2 Ndc5 20.Qc2 de3 21.fe3 Ba6–+) 19...Ndc5 20.Qb2 Nd3! 21.Nb3 (21.Kd3 Nf2 Double attack) 21...Nc1 (21...Qa6 22.Qc2 Ne1 23.Kd1–+) 22.Nc1 Nc3 (better is 22...de3!? 23.Nb3 Qd8 24.Qd4–+) 23.Kf3 Nb1 24.Qb1 de3 25.Nd3 (25.fe3 d4! 26.Qe4 Qh5 27.g4 f5 28.Qe6 Qf7 29.Qf7 Rf7–+) 25...c5 26.Nb4 (26.fe3 d4 27.Kf2 de3 28.Kg1 Re8–+) 26...d4 (26...Qb4?! 27.Qb4 cb4 28.Ke3 Re8 29.Kd2–+) 27.Ke2 cb4 28.fe3 Re8 0–1. Hanscombe,Richard – Summers,C (1950), ch–WLS Cardiff WLS, 2010.

3.a3 Bf5 4.e3 Nd7 5.c4 (5.Nf3 ab4 6.ab4 Ra1 7.Ba1 e6=) 5...c6 6.cd5 cd5 7.Bb5 e6 8.Nf3 f6 9.ba5 Ra5 10.a4 Bb4 11.0-0 Ne7 12.Nd4 e5?? (better is 12...Qb8+=) 13.Nf5+- Nf5 14.Qg4 g6 (14...Nd6 15.Qb4 Nb5 16.ab5 Ra1 17.Ba1 Qe7+-) 15.Qb4 Ra8 (15...b6 16.Nc3 Qa8 17.e4 de4 18.Ne4 Rb5 19.ab5+-) 16.Nc3 d4 17.Ne4 Kf7 18.ed4 1–0. Hal1958 – Mosselman, playchess.de, 2004.

3.ba5 Ra5 (--> 1.b4 a5 2.ba5 Ra5 3.Bb2 d5).

3.c4 ab4-/+ 4.cd5 Qd5 5.Qb3 (5.Qc2!? Qc6 6.Qb3-/+) 5...Qb3–+ 6.ab3 Ra1 7.Ba1 Be6 8.h4 (8.Be5 Bb3 9.d4 Bc2–+) 8...Bb3 9.h5? (9.d4–+) 9...Ba2 (9...Ba2 10.Rh4 c5–+ (10...Bb1?! 11.Rb4 Bf5 12.Rb7–+)) 0–1. Hillbottom – Wall,Bill, internet, 1998.

3.e3 ab4=+ 4.Nf3 Nc6 5.a3 ba3 6.Na3 e6 7.Be2 Nf6 8.c4 Be7 9.0-0 0-0 10.d4 Bd7 11.c5 b6 12.cb6 cb6 13.Nb5 Na5 14.Bc3 Rc8 15.Ba5 ba5 16.Qe1 (16.Ne5!?-/+) 16...Bb4–+ 17.Qd1 Ne4 Black launches an attack 18.Bd3 Bb5 19.Bb5 Nc3 20.Qd3 Nb5 21.Qb5 Rb8 22.Qd3 Qc7 23.Ne5 (23.Rfc1!? Qd7 24.Ne5-/+) 23...Rfc8 24.h3 Qc2 25.Qa6 Qc7?? (25...Ra8 26.Qb5–+) 26.Rfb1 (26.Qd3 f6 27.Ng4–+) 26...Ra8-/+ 27.Qb5 f6 28.Nd3 (28.Nd7 Rd8-/+) 28...Qc4 (better 28...Bc3!? 29.Rc1 Qc4–+ (29...Ba1?! 30.Rc7 Rc7 31.Qb1=)) 29.Qc4=+ dc4 (29...Rc4? 30.Nb4 a4 31.Nd3+-) 30.Nb4 ab4 31.Ra8 Ra8 32.Rb4 Rc8 33.Rb2 Kf7 34.Kf1 Kg6 35.Ke2 Kf5 (35...e5 36.Rb5 ed4 37.ed4+=) 36.Rc2 (36.Rb5!? e5 37.de5 fe5 38.f4+-) 36...Ke4 37.Kd2 Kd5 38.Kc3 (38.Ra2 Rc7=) 38...Rb8 (38...Ra8 39.Rb2 Ra3 40.Kc2=) 39.Rb2 (39.Ra2!? Rb3 40.Kc2=) 39...Rb2=+ 40.Kb2 e5 41.Kc3 e4? (41...g6 42.h4+-) 42.Kb4 (42.f4!? g6+-) 42...f5 43.g3 h5 (43...g5+-) 44.h4 g5 (44...Kd6+-) 45.hg5 f4 (45...c3 46.Kc3 Ke6 47.Kb4+-) 46.ef4 Kd4 47.g6 c3 48.g7 c2 49.g8Q c1Q 50.Qd8 1–0. BeepBeepImAJeep (2590) – Clovis99 (2415), lichess.org, 2017.

5.Ba1 Qd6 6.b5 Bd7 (6...e5 7.Nf3 Nd7 8.Bb2=+) 7.e3= e5 8.Nf3 f6 9.Nc3 Nh6 10.Be2 Nf7 11.0-0 Be7 12.Bb2 0-0 13.Qa1 c5 14.Qa7 Bc8 (14...d4 15.Nb1=) 15.Na4 (15.e4 d4 16.Nd5 Bd8+=) 15...Nd7 16.Ba3 The pressure on c5 grows 16...b6 17.d4 e4? (better 17...ed4 18.ed4 Nd8+=) 18.dc5+- bc5 19.Nd4! Nfe5? (19...cd4 20.Bd6 Pinning (20.Bd6 Deflection)) 20.Nf5 Qe6 21.Ne7 Qe7 22.Bc5 (worse 22.Nc5 Qf7 23.Nd7 Rd8 24.Nf6 Qf6+-) 22...Qe6 23.Bf8 Nf8 24.Nc5 (24.Qa8 Bd7+-) 24...Qf5 (24...Qd6 25.Rd1+-) 25.Qc7 (better 25.Qa8 Nc4 26.Rd1 Ne5+-) 25...Nfg6 (25...Be6 26.b6 Bc8 27.b7 Bb7 28.Qb7 Nf3 29.Bf3 ef3 30.Ra1+-) 26.Qd8 Nf8 27.Qd5 Kh8 28.Qd8 (28.Qe4 Qe4 29.Ne4 Bf5+-) 28...Kg8 29.b6 h5 (29...Nf3 30.Bf3 ef3 31.b7 Bb7 32.Nb7+-) 30.b7 Nf3 (30...Bb7 31.Nb7 Qe6 32.Bh5+-) 31.Bf3 (better 31.gf3 Bb7 32.Nb7 ef3 33.Bc4 Kh7+-) 31...ef3 (31...Bb7 32.Nb7 ef3+-) 32.bc8Q (32.bc8Q Qc8 33.Qc8 Kf7 34.Rb1 Kg6 35.Qe8 Kh6 36.Qf8 h4 37.Rb7 Kg5 38.Rg7 Kf5 39.Qc8 Ke5 40.Qe6) 1–0. FeegLood (2620) – CaissaSoeze (2290), lichess.org, 2015.

5.Ba1 Qd6 6.Nc3 c6 7.Qb1 Nf6 8.e3 e5 9.b5 Be7 10.Nf3 0-0 (10...Nbd7 11.Be2+=) 11.Be2 (11.bc6 Nc6 12.Nb5 Qb8=) 11...c5 Black intends d4 (11...e4 12.Nd4 c5 13.Nb3-/+) 12.d3 d4 13.Nd1 Nbd7 14.c3 b6 (14...Nd5 15.0-0+=) 15.cd4= ed4 16.ed4 Re8 (16...Nd5 17.dc5 Nc5 18.Ne3=) 17.0-0 Bb7 (17...Nd5 18.dc5 Qg6 19.Qc1 Bc5 20.Nh4=) 18.Ne3 Bd8 (18...Nd5!? 19.dc5 bc5 20.Nd5 Qd5+/-) 19.dc5+/- bc5 20.Re1 Bc7 (20...Ba5!? 21.Nc4 Qc7 22.Na5 Qa5+/-) 21.Nc4+/- Qf4 22.g3 Qh6 (22...Qf5 23.Ne3 Qh3 24.Ng5+-) 23.Qd1 (23.Nh4 Re6+-) 23...g5 (23...Nb6!?+/-) 24.Bf1 Re1 25.Ne1 Nd5 (25...Kf8 26.Bg2 Nd5 27.Nc2+-) 26.Qe2 (26.Qg4 N5f6 27.Qf5 Qg6 28.Qg6 fg6+-) 26...Qe6 27.Qe6 fe6 28.Nf3 h6 29.Nfe5 N7f6 (29...Ne5 30.Ne5 h5 31.Be2+-) 30.Bh3 Bc8 31.Nc6 Kf7 32.d4 g4 (32...Nd7 33.dc5 Nc5 34.Bg4+-) 33.Bg2 (33.Bf1 cd4 34.Bd4 Nd7+-) 33...Nd7 (33...cd4 34.Bd4 Nd7 35.Be4+-) 34.dc5 Nc5 35.N4e5 Be5 36.Ne5 Ke7 37.Ng4 Nb3 (37...h5 38.Ne3 Bd7 39.Nd5 ed5 40.b6+-) 38.Bb2 h5 39.Ba3 Kf7 (39...Kd7 40.Ne5 Kc7 41.Bf3+-) 40.Ne5 Kf6 41.Bb2 Kf5 (41...Ke7 42.Bf3+-) 42.Nc6 (better is 42.Nf7 Kg6 43.Nd6+-) 42...Bd7 43.Bf3 Kg5 (43...h4 44.gh4 Kf4 45.Kg2+-) 44.h4 Kf5 (44...Kh6 45.Nd8 Kh7 46.Bd5 ed5 47.b6+-) 45.Bh5 (45.Bd1!? Bc6 46.bc6 Nd4 47.Bd4 e5+-) 45...Nb6 (45...Bc6 46.bc6 Na5 47.Be8+-) 46.Be2 (46.f3 Bc6 47.bc6 e5 48.Bg4 Kf6+-) 46...Na4 (46...Kg6 47.Kg2+-) 47.Bg7 (better is 47.Bd3 Kg4 48.Bg7 Bc6 49.bc6 e5+-) 47...Nbc5 (47...Kg6 48.Bh8 Kh7+-) 48.h5 Be8 49.h6 Kg6 50.Bd1 (50.Bh5 Kh5 51.h7 Bc6 52.h8Q Kg5 53.bc6 Nd7 54.Qh6 Kg4 55.Qe6 Kg5 56.f4 Kh5 57.Qf5) 50...Kh7 51.Bc2 (51.Ne7 Nb2 52.Bc2 Nbd3+-) 51...Bg6 52.Bg6 Kg6 53.Ne7 Kh7 54.g4 Ne4 (54...Nd3+-) 55.f4 Nd6 56.g5 1–0. Dzera,Evgeniy (2000) – Gavrilov,Yuriy (2270), Chervonny, 2007.

5.Ba1 Qd6 6.Nc3 e5 7.e3 Nf6 8.Nb5 Qe7 9.c3 c6 10.Na3 Bf5 (10...Qc7 11.Nc2+=) 11.Nf3 Qc7 12.d3 (12.c4 Nbd7 13.Bc3 Be7+=) 12...Bd6-/+ Black prepares e4 13.Be2 0-0 14.Nc2 Nbd7 15.h3 e4 16.Nfd4 Bg6 17.c4 (17.de4!? Be4 18.0-0-/+) 17...ed3–+ 18.Bd3 dc4 (better is 18...Bd3!? 19.Qd3 Ne5–+) 19.Bc4+= Ne5 20.Be2 Nd5 Attacking the isolated pawn on b4 21.f4 Bc2 22.Nc2 Ng6 (22...Nd7 23.0-0+=) 23.0-0 Qe7 The backward pawn on e3 becomes a target (23...Nb4? 24.Qd4 f5 25.Nb4+-) 24.Qd4 Nf6 25.g4 (25.Qc4 Re8=) 25...Rd8 26.Qc3? (better is 26.g5!? Ne8 27.Qb6+=) 26...Nf4!–+ 27.ef4 (27.ef4 Nd5 Double attack (27...Qe2 Pinning; 27...Qe2 Deflection; 27...Nd5 Decoy); 27.Rf4 Nd5 Double attack (27...Nd5 Decoy)) 27...Qe2 28.Rf2 (28.Re1 Qb5 29.f5 Bf8–+) 28...Qe4 (28...Qf2 29.Kf2 Ne4 30.Ke3 Nc3 31.Bc3–+) 29.g5? (29.Qe3 Bb4 30.Qe4 Ne4–+) 29...Nh5 (29...Bf4 30.Qf3 Bg5 31.Bf6 Qf3 32.Rf3 Bf6 33.Kf1–+) 30.Nd4? (30.Rd2–+) 30...Bf4 (30...Nf4 31.Nc2 Bf8 32.Qf3 Nh3 33.Qh3 Rd1 34.Rf1 Qc2 35.Bc3–+) 31.Re2 Qd5 (better is 31...Qg6 32.h4–+) 32.h4 (32.Nf3 Bg5 33.Re5 Qd1 34.Qe1 h6 35.Re8 Kh7 36.Rd8 Qe1 37.Ne1 Bd8–+) 32...Be5 33.Qe3 f6 (33...Re8 34.Nf3 Bh2 35.Kh2 Re3 36.Re3 Qa2 37.Kh3–+) 34.Rd2 (34.Nf3 Ba1 35.Rd2 Qd2 36.Qe6 Kf8 37.Nd2 Rd2 38.Qc8 Kf7 39.g6 hg6 40.Qb7 Ke6 41.Qc6 Kf5–+) 34...Bf4 35.Qe6 (35.Qf2 Bd2 36.Qd2–+) 35...Qe6 36.Ne6 0–1. Chaparro Grande,Fernando (1620) – Alonso Valiente,Alexis (1950), 1st Torneo Internacional Ciudad Galdos, 2016.

5.Ba1 e6 6.e3 Bb4?? (better is 6...Nf6 7.b5 Bd6+=) 7.Bg7+- 1–0. Hal1958 – Jmcerna, playchess.de, 2002.

5.Ba1 Nf6 6.e3 Bg4 7.Be2 Be2 8.Qe2 c6 9.Bf6 gf6 10.Nf3 e5 11.b5 c5 (11...Rg8!? 12.g3 e4=) 12.0-0 Nd7 13.Nc3 Nb6 14.Nh4 h5 (14...c4 15.Nf5+=) 15.Ra1+/- Qc8 (15...c4 16.Nf5+/-) 16.Qf3 e4 (16...Qd8 17.d3+/-) 17.Qf6+- (17.Qf6 Rh6 18.Qe5 Re6 19.Qh5+-) 1–0. marekt – RWO, internet, 2012.

5.Ba1 Nf6 6.Nf3 Bf5 (6...e6 7.b5+=) 7.Nc3 (7.b5 Nbd7+=) 7...Nc6 8.b5 Nb4 9.d3 e6 (9...c6 10.bc6 Nc6+=) 10.e4 (better is 10.h3!?+=) 10...de4-/+ 11.de4 Qd1 12.Nd1? (12.Kd1!? Ne4 13.Ne4 Be4 14.Ne1-/+) 12...Be4 (better is 12...Nc2 13.Ke2 Be4–+ (13...Na1?! 14.ef5 ef5 15.Kd3–+)) 13.Be2?? (better is 13.Ne3–+) 13...Nc2 14.Kd2 Na1 15.Nc3 (15.Ne3 Bb4 16.Kc1 Nd5 17.Nd5 ed5–+) 15...Nb3 16.Ke3 (16.Kd1 Bg6 17.Ne5 Bb4–+) 16...Bc5 17.Nd4 (17.Kf4 Bd6 18.Ke3 Ng4 19.Ke4 Nf2 20.Ke3 Bc5 21.Kf4 Nh1 22.Bc4–+) 17...Nd4 (17...Nd4 18.Ne4 Ne4 19.Ke4 Ne2–+) 0–1. Nautiluschess – geomck (1700), ICS blitz, 2000.

4.e3 Qa5 5.Bc3 Qc7 6.Nf3 Nc6 7.Be2 e5 8.0-0 Nf6 9.d4 e4 10.Ne1 Bd6 11.g3 Bh3 12.Ng2 c4 13.Re1 b5 14.Nd2 h5 15.Nf4? Bf4–+ 16.ef4 b4 17.Bb4 Nb4 18.a3 Nc6 19.c3 Qd7 20.Bf1? h4 21.Bg2 hg3 22.fg3 Bg2 23.Kg2 Qh3 24.Kg1 Qh2 25.Kf1 Qh1 26.Kf2 Rh2 27.Ke3 Qe1! (27...Qe1 28.Qe1 Ng4#) 0–1. mic (2225) – jparkinson (2410), net–chess.com, 2007.

4.Nf3 Nc6 5.e3 f6 6.d4 Bg4 7.Be2 e6 8.0-0 Nge7 9.Nbd2 c4 10.h3 Bh5 11.c3 Qa5 12.a4 Nf5 13.g4+/- g6 14.gh5 gh5 15.Kh1 Bd6 16.Nh2 Kd7 17.Bh5 Rag8 18.Bg4 Nce7 19.e4 Nh4 20.Rg1 de4 21.Ne4 f5 22.Nd6 fg4 23.Nb5 gh3 24.Qe2 Qb6 25.Qe4 Nef5 26.Rae1 Rg2 27.Bc1 Rhg8 28.Bf4 R8g4?? 29.Qe5 Qc6 30.d5 Qd5?? 31.Qd5+- ed5 32.Rg2 hg2–+ 33.Kg1 Rf4 34.Rd1 Kc6 35.Na3 Re4 36.Nc2 Re2 37.Nd4?? Nd4–+ 38.cd4 c3 39.Rc1 c2 40.Ng4 Rd2 41.Ne3 Kb6 42.Rc2 Rc2 43.Nc2 Ka5 44.Ne3 Ka4 45.Kh2 Kb3 0–1. futsalboy (1615) – rox76 (1855), kurnik, 2011.

4.e3 Na5 5.Nf3 Bg4 6.d4 e6 7.Nbd2 Bb4 8.c3 Bd6 9.Be2 Nf6 10.0-0 0-0 11.h3 Bh5 12.c4 Bb4 (12...dc4 13.Nc4 Bf3 14.gf3=+) 13.cd5 Nd5 14.a3 Bd6 15.e4 (15.Ne4 Bg6 16.Nd6 cd6=) 15...Nf4=+ 16.e5 (16.Rc1 Nc6 17.Bb5 Na7=+) 16...Be7 17.Ne4 b6 18.Ng3 Ne2 19.Qe2 Bg6 (19...Bf3 20.Qf3 Nc4 21.Qc3-/+) 20.Bc3 (20.Rac1 c6-/+) 20...Qd5 (20...Nb3 21.Ra2-/+) 21.Bb4 (21.Ba5 Ra5 22.h4 f5 (22...Ra3?! 23.Ra3 Ba3 24.h5=) 23.ef6 Rf6-/+) 21...c5-/+ 22.dc5 (better 22.Ba5 Ra5 23.Qb2-/+) 22...bc5 (better 22...Bd3!? 23.Qe1 Bf1 24.cb6 Bb4 25.ab4 Bg2 26.Kg2 Nc4-+) 23.Rfd1= Qb7 24.Ba5 Ra5 25.a4 (25.Nd2!?=+) 25...Rfa8-/+ 26.Qc4 Qb4 27.Qb4 cb4 28.Rd7 Bf8 29.Nh4 (29.Kf1!?-/+) 29...Bc2-+ 30.Rb7 (30.Nf3 b3 31.Rb7 Ra4 32.Ra4 Ra4-+) 30...b3 31.Re1? (31.Nf3 Ra4 32.Ra4 Ra4 33.Nd2-+) 31...Ra4 32.Nf3 Ra1 (better 32...Bb4 33.Rf1 Bd3 34.Nd2 Bd2 35.Rd1-+) 33.Kh2 (33.Ra1 Ra1 34.Nf1 Ra4-+) 33...Re1 34.Ne1 Ra1 35.Nf3 h6 (35...Ra4 36.Nd2 Rb4 37.Rc7-+) 36.Ne2 (36.Nd2 Ra3-/+) 36...Bd1 (better 36...Ra4!? 37.Nd2 Rb4-+) 37.Nc3 Bf3 38.gf3 Ba3 (better 38...g5!? 39.Rb3 Bg7 40.Rb8 Kh7-/+) 39.Rb3=+ Bc1 (39...Bc5 40.Ne4 Bd4 41.f4=+) 40.Ne2 (40.Kg3 Kh7=) 40...Bd2=+ 41.Rd3 Ra2 42.Kg2 g5 43.h4 (43.f4 Bf4 44.Nf4 gf4=+) 43...Kg7 (43...gh4 44.f4-/+) 44.hg5 hg5 45.Ng3 (45.Rd4 Be3 46.Re4 Bb6=+) 45...Kg6 46.Ne4 Be1 (46...Bf4 47.Rd8-/+) 47.Kf1 Bb4 48.Nd6 (48.Rb3 Ra4=+) 48...Ra1 49.Kg2 Ra6 (49...f6-/+) 50.Ne8 (50.Kg3 Ra2=+) 50...Kf5 (50...Ra5 51.f4 gf4 52.Kf3 Re5 53.Kf4 Rf5 54.Kg3-+) 51.Re3 (51.Nd6 Ke5 52.Nf7 Kf6-/+) 51...Bc5 52.Re4 Ra3 (52...Ra2 53.Ng7 Kg6 54.Ne8-/+) 53.Nd6? (better 53.Nf6!?-/+) 53…Bd6-+ (53...Bd6 54.ed6 Rd3-+) 0-1. zembelek (2075) - PPXAKE (2045), Rated Blitz game, lichess.org, 2015.

4.Nf3 f6 5.a6 ba6 6.Nc3 e5 7.e4 d4 8.Nd5 Nge7 9.Ne7 Be7 10.Bc4 Qd6 11.c3 d3 12.Rb1 Be6 13.Ba3 Bc4?? (better is 13...Qd7 14.Be6 Qe6 15.Be7 Ne7 16.Qa4 Qc6 17.Qc6 Nc6=) 14.Bd6+- Bd6 15.Qa4 Bb5 (15...Be6 16.Qc6 Kf7 17.0-0+-) 16.Rb5! (16...Ke7 17.Rd5+-) 1–0. b4_player (2245) – lisarik (1950), GameColony.com, 2003.

4.Nf3 Bg4 5.e3 Ra5 6.Be2 Nf6 7.d3 e6 8.0-0 Bd6 9.Nbd2 0-0 10.c4 Qa8 (10...Qe7 11.Qb3=) 11.h3 (11.Bf6 gf6 12.cd5 Rd5=) 11...Bf5 12.a4 Nb4 13.Qb3 b6 14.Nd4 (14.Bf6 gf6 15.Nd4 Bg6+=) 14...Bg6 (14...Bh3 15.cd5 (15.gh3? dc4 16.Qd1 Rg5 17.Bg4 h5-+) 15...Rd5 16.Bf3+=) 15.cd5 Nbd5 16.Nc4 Ra6 17.Nd6 cd6 18.Nb5 Nd7 (18...Qb8 19.Rfc1+/-) 19.d4 (worse 19.Nd6 Nc5 20.Qc4 Ra4 21.Ra4 Qa4+=) 19...e5? (better 19...N7f6 20.Nd6 Ra7+/-) 20.Bc4+- N7f6 21.Nd6 ed4 (21...Ra5 22.de5 Ne4 23.Ne4 Be4 24.f3+-) 22.Ba6 Qa6 23.Bd4 Ne4 (23...Rd8 24.Nc4 Ne4+-) 24.Qd5 (24.Qd5 Nd6 25.Qd6+-) 1-0. Adlai – Vemnes, internet, 2022.

4.g3 Na5 5.Bg2 Nc4 6.Bc3 e6 7.d3 Na3 (7...Nd6 8.e4=+) 8.Na3= Ra3 9.Qd2 (9.Bb2 Ra5=) 9...c6 10.Nf3 Nh6 11.0-0 c5 (11...f6 12.d4=) 12.Bb2 Ra8 (12...Ra4 13.Qd1=) 13.c3 (13.a4 f6+=) 13...Bd6= 14.a3 Nf5 (14...e5 15.c4 d4 16.Rfb1=) 15.d4 (15.e4!? Ne7 16.e5=) 15...c4 16.Ne5 h5 (16...Qc7 17.f4=+) 17.h4 (17.e4!? Ne7 18.ed5 ed5 19.Qg5=) 17...f6=+ 18.Ng6 Rh6 19.Nf4 g5 20.hg5 fg5 21.Nh3 Be7 (better 21...g4 22.e4 de4 23.Be4 Rh8=) 22.Ng5?? (better 22.Bc1=) 22...Bg5–+ 23.f4 (23.Qe1 Nd6–+) 23...Bf6 24.e4 (24.Kf2 Rg6 25.Ke1 Bh4 26.gh4 Qh4 27.Kd1 Rg2–+) 24...Ng3 25.ed5 (25.Rfe1 Ne4 26.Be4 de4–+) 25...Nf1 26.Qe2 (26.Rf1 ed5 27.f5 Rh8–+) 26...Ng3 27.Qe3 (27.Qc4 Qb6 28.Bc1 ed5 29.Bd5 Bf5–+) 27...Nf5 28.Qe2 h4 29.Bh3 (29.Qc4 h3 30.Bf3 h2 31.Kf2 Qd6–+) 29...Rg6 (29...Qd5 30.Kh2–+) 30.Kh2 Ng3 (30...Qd5 31.Bg2 Qd6 32.Bc1–+) 31.Qe3 (31.Qc4 Qd5 32.Qd5 ed5–+) 31...Qe7 (better 31...Qd5 32.Rg1–+) 32.Re1 ed5 (better 32...Ra5 33.de6 Bg7 34.Qf3–+) 33.Qf2 (33.Qg1–+) 33...Ne4 34.Qf3 Bh3 35.Qh3 Rg3 36.Qf5 Kf7 (better 36...Kf8 37.Re4 Qe4 38.Qe4 de4 39.f5–+) 37.Qh5 (37.Qd5 Qe6 38.Qe6 Ke6 39.Re4 Kd5 40.Re2–+) 37...Kf8 38.Qd5 Qg7 39.Re2 (39.Qg5 Ng5 40.fg5 Qd7 41.Re6 Qe6 42.gf6 Qh3) 39...Rg1 (39...Rh3 40.Kh3 Qg3) 40.Qg5 (40.Qc5 Nc5 41.Re8 Re8 42.dc5 Qg3) 40...Bg5 (40...Ng5 41.Re8 Re8 42.Kg1 Nf3 43.Kf2 Qg3 44.Kf1 Re1) 41.fg5 Qg5 42.Rf2 Nf2 (42...Nf2 43.d5 Qg3) 0–1. JUANKARODA (1855) – pmdiy (1840), lichess.org, 2020.

3.b5 (-->1.b4 a5 2.b5 d5 3.Bb2).

3.b5 a4 4.a3 e6 5.e3 Nf6 (--> 1.b4 a5 2.b5 d5 3.Bb2 a4 4.e3 e6 5.a3 Nf6).

3.b5 b6 4.a4 Bb7 (--> 1.b4 a5 2.b5 b6 3.a4 Bb7 4.Bb2 d5).

3.b5 c5 4.e3 Nd7 5.c4 e6 6.Nf3 Ngf6 (--> 1.b4 a5 2.b5 d5 3.Bb2 c5 4.e3 e6 5.c4 Nf6 6.Nf3 Nbd7).

3.b5 c5 4.e3 Nd7 5.c4 Ngf6 6.Nf3 e6 (--> 1.b4 a5 2.b5 d5 3.Bb2 c5 4.e3 e6 5.c4 Nf6 6.Nf3 Nbd7).

3.b5 c5 4.e3 Nf6 5.c4 e6 6.Nf3 Nbd7 (--> 1.b4 a5 2.b5 d5 3.Bb2 c5 4.e3 e6 5.c4 Nf6 6.Nf3 Nbd7).

3.b5 c6 4.a4 (--> 1.b4 a5 2.b5 c6 3.a4 d5 4.Bb2).

3.b5 c6 4.e3 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.Bb2).

3.b5 c6 4.e3 Nd7 5.c4 e5 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.c4 e5 5.Bb2 Nd7).

3.b5 e6 4.e3 Nf6 5.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3).

3.b5 e6 4.Nf3 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5).

3.b5 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d5).

3.b5 Nf6 4.e3 c6 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.Bb2 Nf6).

3.b5 Nf6 4.e3 e6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a5).

3.b5 Nf6 4.e3 e6 5.Nf3 Bd6 6.Be2 Nbd7 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3 Nbd7 6.Be2 Bd6).

3.a3 d4 4.Nf3+= Nc6 5.e3 g6 (better is 5...de3!? 6.fe3 Nf6=) 6.b5+/- ab5 (6...Nb8 7.Bd4 f6 8.Bb2+/-) 7.Bb5 (7.ed4?! Na7+=; < 7.Nd4 Nd4 8.Bd4 f6+/-) 7...Qd6 (7...Bd7!?+/-) 8.Nd4+- Bd7? (better is 8...e5 9.Nc6 bc6+-) 9.Bc6 Bc6 (9...bc6 10.Nf5!! Bf5 11.Bh8+-) 10.Nc6 f6 (10...Nf6 11.Ne5+-) 11.Nb4 1–0. Wall,Bill – Sparkey, internet, 2002.

3.a3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.a3 a6).

3.a3 Bg4 4.g3 Nf6 5.Bg2 Nbd7 6.Nf3 g6 7.h3 Bf3 8.Bf3 Bg7 (8...c6!?=) 9.Bd5!+/- c6 (9...Nd5 10.Bg7 Pinning (10.Bg7 Deflection)) 10.Bg2 0-0 11.0-0 e5 12.d3 Qc7 13.c4 Rad8 14.Qb3 Rfe8 15.Nd2 Nf8 16.Rad1 Ne6 17.e3 Nd7 18.c5 Nf6 19.Nc4 Nd5 20.Nd6 Rd6 21.cd6 Qd6 22.Bd5 cd5 23.Kg2 g5 Black intends d4 24.e4 d4 25.Rc1 Rd8 26.Rc2 Qd7 27.a4 Bf8 28.Rfc1 h6 29.Rc4 Rb8 30.Ba3 Qe7 31.Rc8 Rc8 32.Rc8 Kg7? (better is 32...Qd7 33.Qc2 Kg7+-) 33.Qd5 Qd6 34.Qb7 a5 35.Rc6 Nd8 36.Rd6 Nb7 37.Rd7 ab4 38.Bb4 (38.Bb4 Bb4 39.Rb7+-; 38.Rb7?! ba3 39.Rb1 Bb4+-) 1–0. Pasiev,R (2240) – Baigildin,Albert (2075), Corporation Centre Cup, Izhevsk RUS, 2010. (=1.a3 a6 2.b4 d5 3.Bb2)

3.Na3 Bd7 4.d4 (4.c4 Nf6=) 4...Nc6 (4...e6 5.c3=+) 5.Nf3 (5.c3 Bf5=+) 5...f6 (5...Nb4 6.e3-/+) 6.c4 (6.c3 Bg4=) 6...e6 7.c5 Nb4 8.Nc2? (8.Qd2 Nc6=+) 8...Nc2?? (better is 8...Ba4 9.Rc1 b6–+ (9...Bc2?! 10.Qd2-/+)) 9.Qc2=+ c6 (9...b6 10.c6 Bc8 11.e3=+) 10.Qb1 (10.e3 e5=+) 10...Nh6 11.e3 Rb8 12.Bd3 Nf5 13.Bc3 Be7 14.Qc2= Qc7 15.Rb1 0-0 16.e4 Nh6 17.Rb4 de4= 18.Be4 f5 (18...f5 19.Bd3 Ng4=). PurdueSux – Nykolaj79, internet, 2007.

3.Na3 Nf6 4.c4 =+.

3.a4 a5 4.b5= b6 (4...f6 5.e3=) 5.e3 (better 5.Nf3=) 5...d4 (better 5...Nf6=) 6.Bd4+- e6 7.Nf3 f6 (7...Nf6 8.Bd3+-) 8.Bc4+- h6 (better 8...Ne7+-) 9.Nh4 Ne7 10.Qh5 Kd7 11.Qf7 Nbc6 (11...Qe8 12.Be6 Kd8 13.Qe8 Ke8 14.Bc8 Nc8+-) 12.Qe6 (better 12.Ng6 Nd4 13.ed4 Bb7+-) 12...Ke8 13.Qf7 Kd7 14.Bf6 Ba6 (14...Nd4 15.ed4 Qe8 16.Qe6 Kd8 17.Qd5 Qd7 18.Be7 Be7+-) 15.Be6 Kd6 16.Nc3 Bc8 (16...gf6 17.Ne4 Ke5 18.Qf6 Ke4 19.f3) 17.Ne4 1–0. DEFFM – GuestXJZW, freechess.org, 2018.

3.a4 c6 (--> 1.b4 c6 2.Bb2 d5 3.a4 a6).

3.a4 Qd6 4.c3 =+.

3.a4 Be6 4.e3 Nf6 5.b5 g6 6.Nf3 Bg7 7.Be2 Nbd7 8.Nd4 Nc5 9.Ba3 Nce4 (9...Na4 10.c3 Nb6 11.ba6 ba6 12.Ne6 fe6 13.d4=) 10.Ne6 (10.ba6 ba6 11.d3 Nd6=) 10...fe6 11.0-0 e5 Black prepares d4 (11...ab5!? 12.ab5 0-0=) 12.c4 d4 13.d3 Ng5 14.f4 ef4 (14...Nf7 15.Bb2 ef4 (15...de3? 16.fe5 Nd7 17.d4+-) 16.ef4 ab5 17.ab5 Ra1 18.Ba1 e5+=) 15.ef4+- Ne6 16.f5 (16.Bg4!? Ng4 17.Qg4 Nf8+-) 16...Ng5 (16...gf5 17.Bh5 Kd7 18.Rf5+/-) 17.fg6 (17.Nd2 ab5 18.ab5 Bh6+/-) 17...hg6 18.Qe1 Qd7 19.Qg3 Nfh7?? (better 19...Qe6+=) 20.Bg4+- e6 21.h4 Nf7 22.Re1 (better 22.Bf3 0-0-0 23.Nd2+-) 22...Be5?? (22...Nf8 23.Nd2 ab5 24.Bf8 Kf8 25.Be6 Qe7 26.Bf7 Qh4 27.Qh4 Rh4 28.Bg6 b4+-) 23.Re5 Ne5 (23...Nf8 24.Re1 ab5 25.ab5+-) 24.Qe5 Rf8 (24...Kf7 25.Nc3! Rhe8+-) 25.Be6 Qd8 26.Bd5 Kd7 (26...Qe7 27.Qe7) 27.Qe6 1-0. DEFFM – GuestDHND, freechess.org, 2021.

3.c4 dc4 4.e3 b5 5.a4 Bb7 6.ab5 ab5 7.Ra8 Ba8 8.Nc3 c6 (8...Bc6-/+) 9.d4 (better 9.Qa1 Bb7 10.Nb5+=) 9...e6 10.Nf3 (10.Qa1 Bb7-/+) 10...Nf6 11.Ne5 (11.Na2 Na6 12.Bc3 Nd5–+) 11...Bd6 (11...Bb4 12.Qa1 Qa5 13.Kd1–+) 12.Qf3 (12.Qa1 Bb7–+) 12...Be5 (better 12...Bb4!? 13.Ke2 0-0–+) 13.de5-/+ Nd5 14.Be2 Nb4 15.0-0 Nd3 (15...0-0 16.Rd1 Qc7 17.Nb5 cb5 18.Qa8-/+) 16.Ba3 b4 (worse 16...Ne5 17.Qg3 Nbd7 18.Ne4=+) 17.Bb4? (better 17.Bd3 ba3 18.Bc4-/+) 17...Nb4–+ 18.Bc4 Nd5 (18...Nd7 19.Qg3 Qa5 20.f4–+) 19.Nd5 cd5 20.Bb5 (20.Bd3 Nc6–+) 20...Bc6 21.Qe2 0-0 22.Bd3 Nd7 23.Qh5 (23.Rc1 Bb7–+) 23...g6 24.Qh6 Ne5 25.Bc2 d4 26.f4 (26.Qf4 d3 27.Bb3–+) 26...Ng4 27.Qh3 Ne3 28.Bd3 (28.Rc1 Qa5 29.Rb1 Qc3 30.Bg6 hg6–+) 28...Nf1 (28...Bg2!? 29.Qg3 Bf1 30.Bf1 Nf1 31.Kf1–+) 29.Kf1 (29.Bf1 Qb6 30.Qd3 Be4–+) 29...Qd5 30.g4 (30.Qf3 Qf3 31.gf3 Bf3–+) 30...f5 31.gf5 ef5 32.Qg2 Qg2 33.Ke1 Re8 34.Kd1 (34.Be4 Ba4 35.h3 Re4) 34...Ra8 (34...Ba4 35.Kc1 Re1) 35.Bc2 (35.Bc4 Kg7 36.Be2 Ra2 37.Kc1 Qe2 38.h3 Qc2) 35...Ra1 36.Bb1 Rb1 0–1. Agiant – Gersonmariano32, lichess.org, 2019.

3.d4 e6 4.a3 Nf6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.d4).

3.e3 b6 4.f4 c6 (4...Nf6 5.Nf3=) 5.Nf3 Nf6 6.c4 (6.Be2 e6 7.a3 c5=) 6...dc4 (6...e6 7.a3=) 7.Bc4 b5 (7...e6 8.Bc3=) 8.Bb3 (8.Be2 e6=) 8...Nbd7 (8...e6 9.Bc3=) 9.g4 (9.Qc2 Bb7+=) 9...Ng4 (9...e6 10.g5 Nd5 11.Bd5 cd5 12.Bd4+=) 10.Bf7= Kf7 11.Ng5 Kg6?? (11...Ke8 12.Ne6 Ne3 13.de3 Qb6+/-) 12.Qc2+- (12.Qg4 Nf6 13.Qg2 Qd5+-) 12...Kh5 13.Nf7 Nh2 (13...Nde5 14.Nd8 Bd7+-) 14.Qf5 1–0. Wall,Bill – Nadworny,Joe, corr, 1988.

3.e3 c5 4.bc5 Nc6 5.Nf3 e6 6.Be2 Bc5?? (better 6...Nf6 7.d4 b6 8.cb6 Qb6+=) 7.Bg7+- 1–0. GuestLXMK – Cumanes, freechess.org, 2017.

3.e3 Qd6 4.a3 Nf6 5.f4 Nc6 6.Nf3 h6 (6...Bg4 7.Bd3=) 7.c4 Be6 (7...dc4 8.Bc4 Bg4 9.0-0=) 8.c5+= Qd7 9.Ne5 Ne5 10.fe5 +=. marekt – korwun, ChessWorld.net, 2004.

3.f3 e5 4.a3 Nc6 5.e4 de4 6.fe4 Nf6 (better is 6...Qh4!? 7.Ke2 Qe4 8.Kf2 a5–+) 7.d3 h6 8.Nf3 Bd6 9.Be2 Ng4 10.Qd2 Be6 11.c4 b6 12.Nc3 Qd7 13.0-0 0-0 14.d4 ed4 15.Nd5 Bd5 16.ed5 Ne3 (better is 16...Nce5!?=) 17.Rf2 Bf4?? (better is 17...Ne7+/-) 18.dc6+- Qc6 19.Nd4 (better is 19.Qd4 Qf6 20.Qf6 gf6+-) 19...Qf6 20.g3 Qg5?? 21.Rf4 Rae8 22.Re1 b5 23.cb5 Nd5 24.Nf3 Qg6 25.Qd5 Qc2 26.Qd2 Qe4 27.Re4 0–1. Jokmin,Alex – Venturas,Bob, RN–2010-0-00321, 2010.

3.Nf3 b6 4.e3 Bb7 5.d4 Nf6 6.Bd3 e6 7.0-0 (better 7.a3!?=) 7...Bb4-/+ 8.a3 Bd6 9.Qe2 c5 10.c4 Ne4 (10...dc4 11.Bc4 cd4 12.Nd4-/+) 11.Be4? (better 11.cd5!? Bd5 12.dc5 Nc5 A) worse 13.Bg7 Rg8 14.e4 Bc6-/+ (14...Rg7?! 15.ed5 Kf8 16.Nc3=); B) 13.e4=) 11...de4-/+ 12.Nfd2 0-0 13.Nc3 cd4 14.ed4 Qh4 15.g3 Qh3 16.Nce4 (better 16.Rad1!?-/+) 16...f5-+ 17.d5 ed5?? (better 17...fe4 18.Ne4 Be7-+) 18.Nd6+- Bc6 (18...Qh6 19.Nb7 Ra7+-) 19.Qe6 Kh8 20.cd5 (20.Nf7 Kg8 21.Nh6 Kh8 22.Qg8 Rg8 23.Nf7) 20...Bd7 (20...Ra7 21.dc6 Nc6+-) 21.Nf7 Rf7 22.Qf7 Nc6 (22...Qf1 23.Rf1 Ra7 24.Qg7) 23.Qg7 (23.Bg7?!=) 1-0. nemesis_rsu - dimehola (1875), Rated Classical game, lichess.org, 2013.

3.Nf3 c6 (--> 1.b4 c6 2.Bb2 d5 3.Nf3 a6).

3.Nf3 Qd6 4.a3 (4.Be5 Qb4 5.Bc7 Qc5=) 4...Nc6 5.e3 e5 6.c4 (6.d4 e4 7.Ne5 Be6=) 6...dc4 7.Bc4 Be6 (7...e4 8.Ng5 Ne5 9.Be5 Qe5 10.Nf7 (10.Bf7? Ke7–+) 10...Qa1 11.Nh8+/-) 8.Be2 (8.Be6 Qe6 9.Qa4 e4+=) 8...Be7 (8...e4 9.Nd4=+) 9.b5 (9.0-0 e4 10.Bg7 ef3 11.Bf3 Bf6 12.Bh8 Bh8+=) 9...ab5 10.Bb5 f6 11.Nc3 Nh6 12.d4 ed4 (12...Rd8 13.de5 fe5 14.Qd6 cd6 15.e4+=) 13.Nd4+= Bd7 14.Qh5 Nf7 15.Bc6 (15.Ne4 Qe5 16.Qf3 Nd6 17.Nd6 Bd6=) 15...bc6 (15...Bc6 A) 16.Nc6 Qc6 17.Nd5 Rd8 18.Ne7 Qg2-/+ (< 18...Ke7 19.Rc1 Qd6 20.0-0+=); B) 16.Nf5 Qd3 17.Ng7 Kf8 18.Ne6 Kg8 19.Nc7+-) 16.Nf5 (16.0-0 Qe5 17.Qf3 Bd6+=) 16...Bf5+= 17.Qf5 0-0 (17...Rb8 18.Rd1 Rb2 19.Qc8 Nd8 20.Rd6 cd6 21.Qg4+/-) 18.0-0 (18.Rd1 Qe5 19.Qe5 fe5+=) 18...Rfb8 19.Qc2 (19.Rfd1 Qc5 20.Qc5 Bc5+=) 19...Qe6 20.Rfb1 (20.Rfd1 Ne5+/-) 20...Ne5+= 21.Ne2 Qc4 22.Nd4=+ c5 23.Qc4+= Nc4 24.Nc6 Rb2 25.Rb2 Nb2 26.Ne7 Kf7 27.Nd5 c6 28.Nc3 Ke6 29.Kf1 Na4 30.Rc1 Nc3 31.Rc3+= Kd5 32.Ke2 c4 33.Kd2 f5 34.h4 Kc5 35.Kc2 Rd8 36.Kc1 g6 37.Kc2 h6 38.Kc1 g5 39.hg5 hg5 40.Kc2 Rh8 41.Kd2 Rh2=+ 42.Rc2 Rg2-/+ 43.Kc3 Rh2 44.Rb2 f4 45.Rb4 Rf2 46.Rc4 Kb5 47.a4 Kb6 48.a5 Ka5 49.Rc6 Rf3 50.Rc5 Kb6 51.Rg5 Re3 (better is 51...Rg3 52.Rd5 Re3 53.Kd2 Re4-/+) ½–½. Rancic,Danijela – Relic,Rajna (2060), YUG–ch sf (Women), 1995.

3.Nf3 f6 4.e3 e5 5.a3 Ne7 6.c4 (6.Be2 Be6=) 6...b6 (6...Bg4 7.Be2=) 7.cd5 Nd5 8.Nc3 Nc3 9.Bc3 (9.dc3 Bd6+=) 9...Bg4 10.Qb3 Bf3 11.gf3 Nd7 (11...Ra7 12.Qe6 Qe7 13.Qe7 Ke7 14.d4 ed4 15.Bd4+=) 12.Bc4+= Bd6 13.Rg1 g6 14.0-0-0 (better 14.Bf7!? Kf8 15.h4+=) 14...c5=+ 15.h4 (15.Bf7 Kf8=+) 15...Qe7 16.h5 g5 (16...b5 17.Be6-/+) 17.b5 (17.d4 cb4 18.ab4 ed4 19.ed4 Kd8=) 17...ab5-/+ 18.Qb5 Ra3 19.Kb2 Ra7 (19...Ra8 20.Ra1 Qd8 21.Qc6 Ra1 22.Ra1+-) 20.Ra1=+ Rb7 21.Ra8 Rb8 22.Rga1 Kf8?? (22...Kd8 23.d3=+) 23.h6?? (23.R1a7 Ra8 24.Rd7 Qe8 25.Rd6 Qb5 26.Bb5 Ke7 27.Rd7 Ke6+-) 23...Qd8?? (better 23...Qe8!=+) 24.Qc6 Ke7 (better 24...Bc7+-) 25.R8a7?? (25.Qd5 Qc8 26.Qe6 Kd8 27.Bb5+-) 25...Rc8?? (25...b5 26.R1a6 bc4 27.Kc1 Ke8 28.Qd6 Rf8 29.Qe6 Qe7+-) 26.Qd5+- Qe8 27.Qe6 Kf8 28.Qd6 Qe7 29.Qd7 Qd7 30.Rd7 Rb8 (30...Rg8 31.Raa7 Rh8 32.Rf7 Ke8 33.Bb5 Kd8 34.Rfd7 Ke8 35.Rh7 Kf8 36.Rh8) 31.Raa7 b5 (31...Rc8 32.Rf7 Ke8 33.Bb5 Kd8 34.Rfd7 Ke8 35.Rh7 Kf8 36.Rh8) 32.Bd5 (32.Rf7 Ke8 33.Rae7 Kd8 34.Ba5 Rb6 35.Be6 e4 36.Bb6) 32...b4 33.Rh7 (33.Rf7 Ke8 34.Bc6 Kd8 35.Rfd7 Ke8 36.Rh7 Kf8 37.Rh8) 33...bc3 34.Kc3 Rh7 35.Rh7 Rd8 (35...Rb4+-) 36.Rh8 Ke7 37.Rd8 Kd8 38.h7 (38.h7 e4 39.h8Q Ke7 40.Qg7 Kd6 41.Qf6 Kd7 42.Qg7 Kd6 43.fe4 g4 44.Kc4 g3 45.e5) 1–0. Lupinacci,Nicola – Stoyanov,Zdravko, FICGS, 2010.

3.Nf3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 a6).

3.f4 Nc6 4.g3 (4.a3!?=+) 4...Nb4-/+ 5.Bg2 Bf5 6.d3 Qd7 (6...e6 7.e4 de4 8.a3 ed3 9.ab4 dc2 10.Qd8 Rd8 11.Nc3-/+) 7.a3 Nc6 8.Nc3 e6 (8...Nf6!?-/+) 9.e4=+ de4 10.de4 Qd1 11.Rd1 Bg6 12.e5 (better is 12.Nge2!?=+) 12...Bc2-/+ 13.Rd2 Bf5 14.Nge2 Bc5 15.Ne4 (15.Bc6 bc6 16.Nd4 Ne7-/+) 15...Be3–+ 16.Rd3 Bb6 17.Nd4? (17.Rb3 0-0-0–+) 17...Nge7 (better is 17...Nd4 18.Bd4 Rd8 19.Bb6 Rd3–+ (< 19...cb6 20.Nd6 Ke7 21.Rb3+=)) 18.Nf5-/+ ef5 19.Nf6? (better is 19.Ng5-/+) 19...gf6–+ 20.ef6 Nc8 21.Bc6 bc6 22.Bd4 Ba5 (22...c5 23.Be3–+) 23.Bc3 Bc3 24.Rc3 Nd6 25.0-0 0-0-0 26.Rc6 Kb7 27.Rfc1 Rd7 28.a4 Rc8 29.a5 Ka8 (better is 29...Ne4–+) 30.Ra6 Kb7 31.Rac6 Nb5 32.a6 Ka7 33.Rb1 Rb8 (33...Rd6 34.Rd6 Nd6 35.Ra1–+) 34.h4 (34.Rc5 Nd4 35.Rb8 Kb8–+) 34...Rb6 (34...Rd6 35.Rc5 c6 36.Rbc1–+) 35.Rc5? (better is 35.Rb6 Kb6 36.a7–+) 35...Ka6 (35...Nd4 36.Rb6 cb6 37.Rc8–+) 36.h5 (36.Rf5 Rd3 37.Kf2–+) 36...Kb7 (better is 36...Rd2–+) 37.Rcb5 (37.Rbb5 c6 38.Rb6 Kb6 39.Rf5 c5+=) 37...Kc6 (37...Rdd6!?=+) 38.Rb6+= cb6 39.Re1 (39.Rc1 Kd5=) 39...Kd6 (better is 39...Rd6!?=+) 40.Re8 b5 41.Rh8 (41.Rb8!?+=) 41...b4= 42.Rh7 b3 43.Rh8 Kc7 44.h6 b2 45.h7 (45.Kf2–+) 45...b1Q 46.Kh2 Rd2 (47.Kh3 Qh1#) 0–1. MasterofDisaster – ASTARTE, Live Game Caissa's Web, 2004.

3.h4 Nc6 4.c3 Bf5 5.d3 e5 6.Nd2 Nf6 7.e3 Bd6 8.Be2 h6 9.g4 Bh7 10.a4 Nd7 11.b5 ab5 12.ab5 Ra1 13.Qa1 Ne7 14.g5 Nf5 (14...Bg6!? 15.gh6 Rh6=+) 15.e4= de4 16.de4 Ne7 (worse 16...hg5 17.ef5 gh4 18.Qb1+-) 17.gh6 gh6 18.Qa4 Nc5 19.Qc2 Ng6 20.h5 Nf4 21.Bc4 Ng2 22.Kd1 (22.Kf1 Rg8 23.Ngf3 Qf6-/+) 22...Be7 23.Rh2? (23.Ke2 Nf4 24.Kf1 Nfd3 25.Bd3 Nd3-/+) 23...Nf4 (23...Be4 24.Qc1 Nf4 25.Rh3–+) 24.Ba3? (better 24.f3!? Rg8 25.Rh1–+) 24...Ne4 25.Be7 Ke7 26.Kc1? (26.Ke1 Nf2! 27.Qa2 Ng4–+) 26...Nf2! 27.Rf2 (27.Qb3 N2d3 28.Kd1–+) 27...Bc2 28.Kc2 Rg8 29.Ngf3 Rg2 30.Rg2 Ng2 31.Ne5 (31.Kc1 Qd6 32.Kb2–+) 31...Ne3 32.Kc1 f6 (better 32...Qh8 33.Nb1 Qe5 34.Bd3–+) 33.Ng6 Kd6 (better 33...Ke8 34.Be2 Qd5 35.Nb1–+) 34.Ne4 Kd7 35.Be2 Kc8 36.Bf3 (36.Nc5–+) 36...f5 (better 36...Qd3 37.Kb2 Qb5 38.Kc1 Qf1 39.Kd2 Qf3 40.Nc5–+) 37.Nd2 (37.Nc5 Qd6 38.Bb7 Kd8 39.Kb2 Qc5 40.Bc6–+) 37...Qd3 38.Ne7 Kb8 39.Kb2 Qd2 40.Kb3 Qc2 41.Kb4 Qb2 42.Kc5 (42.Ka4 Qa2 43.Kb4 Nc2 44.Kc5 b6 45.Kc6 Qe6) 42...b6 (42...Qc3) 43.Kd4 Qd2 44.Ke5 Nc4 (44...Qd6) 45.Kf5–+ Qg5 46.Ke6 Qe5 (better 46...Qe3 47.Kd5 Qd3 48.Ke6 Qd6 49.Kf5 Qe7–+) 47.Kf7 (47.Kd7 Qg7 48.Ke6–+) 47...Nd6 48.Kg6 (48.Kf8 Qf6 49.Kg8 Qe7 50.Bd5 Qg5 51.Kf8 Qf6 52.Kg8 Nf5 53.Be4 Qg7) 48...Qe7 49.Kh6 (49.Be4 Qg5 50.Kh7 Ne4 51.Kh8 Nf6 52.c4 Qg8) 49…Qf6 (49...Qf6 50.Kh7 Nf5 51.h6 Qh6 52.Kg8 Qg7; 49...Ne8 50.Kg6 Qf6 51.Kh7 Qg7) 0–1. beatmeeasy (1910) – ABEQ (1910), lichess.org, 2020.

4.a4 Nc6 =.

4.e3 Bb7 5.Be5 Nd7 6.Bb2 e5 7.d3 Bd6 8.Nf3 f5 (8...a5 9.d4 e4 10.Ne5=+) 9.Nbd2 Ngf6 10.Nb3 Qe7 11.h3 (11.c4 bc4 12.dc4 dc4=) 11...h6 (11...Rd8!?=+) 12.Nh4= f4?? (better 12...Qe6=) 13.Ng6+- Qe6 14.Nh8 Qf5 (14...0-0-0 15.Ng6+-) 15.Be2 (15.ef4 ef4 16.Be2 f3 17.Bf3 0-0-0+-) 15...0-0-0 (15...fe3 16.0-0 h5 17.c4+-) 16.Nf7 (16.Nf7 Rf8 17.Nd6 cd6 18.ef4 Qf4 19.Bf3+-) 1–0. petrobbo (1975) – Bebigols (2025), ChessWorld.net, 2018.

4.e3 Nc6 5.Nf3 Qd6!? =.

4.e3 Nc6 5.Nf3 e5 6.Ne5+/- Ne5 7.Be5 Bd6?? (better is 7...Nf6+/-) 8.Bg7+- Nf6 (8...Be5 9.Be5 f6 10.Qh5 Ke7 11.a4+-) 9.Bh8 Be5 (9...Bg4 10.Be2 Be2 11.Qe2+-) 10.Bf6 Bf6 11.d4 Bf5 12.Be2 Qe7 13.0-0 Kd7 14.Nd2 Rg8 15.Nf3 Be4 16.Ne1 Bg2 17.Ng2 Qe4 18.Bf3 Qg6 19.Bd5 h5 20.Qd3 (20...Ke8 21.Qg6 Rg6 22.Be4+-; 20.Kh1 Bg5+-) 1–0. Onkel_Luis – ronen1967, ICC, 2003.

4.e3 Nc6 5.Nf3 Bg4 6.Be2 e5 (6...Qd6 7.h3 Bf5 8.Nc3+=) 7.0-0 (7.Ne5 Ne5 8.Bg4 Ng4 9.Qg4 Nf6+/-) 7...Nf6 (7...Bd6!?=) 8.Ne5+/- (8.Be5? Bf3 9.Bf6 Qf6–+) 8...Be2 (8...Ne5 9.Be5 Be2 10.Qe2+/-) 9.Qe2 (9.Nc6?! Bd1 10.Nd8 Bc2 11.Bf6 gf6=) 9...Ne5 10.Be5 Bd6 11.Bb2 (11.Bd4 0-0+/-) 11...Qe7 (11...0-0 12.a4 Rb8 13.ab5 ab5 14.Ra6+=) 12.d3 (12.a4 Rb8 13.ab5 ab5+/-) 12...0-0 13.Nd2 (13.Qf3 Be5 14.Be5 Qe5+=) 13...Rfe8 (13...a5 14.c4 bc4 15.dc4 ab4 16.ab4 Bb4 17.Nf3=) 14.c4+/- dc4 15.dc4 c6 (15...c5 16.cb5 ab5 17.bc5 (< 17.Qb5 Rab8 18.Qc6 cb4+/-) 17...Bc5 18.Qb5+-) 16.cb5 (better is 16.Qf3+/-) 16...Qc7?? (16...ab5!? 17.Rac1 Qc7 18.Bf6 gf6 19.Qg4 Kh8+/-) 17.h3 cb5 18.Rac1 Bh2? 19.Kh1+- Be5?? 20.Be5 Qe5+/- 21.Nb3 Nd5 22.Nc5 Nc3 23.Qc2 Nd5 24.Qd3 Rad8 25.Rfd1 Nf4?? 26.Qd8+- Ne2 (27.Rc2 h6+-; 26...Ng6 27.Qd7+-). Onkel_Luis – ronen1967, ICC, 2003.

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

4.e3 (--> 3.e3 Nc6 4.a3).

4.Nf3 (--> 3.Nf3 Nc6 4.a3).

4.e3 Nf6 5.c4 dc4 6.Bc4 Bb5 7.Bb5 ab5 8.d4 e6 9.Nf3 Be7 10.0-0 0-0 11.Qe2 c6 12.Nbd2 Nbd7 13.Nb3 Nb6 14.Na5 Ra7 15.Ne5 Qd5 16.f3 Rfa8 17.e4 Qd6 18.Rac1 Na4 19.Ba1 Bd8 20.Nec6 bc6 21.Nc6 Qd7 22.Na7+= Ra7 23.Rfd1 Bb6 24.Kh1+/- Ne8 25.d5 Nd6?? 26.de6+- Qe6 27.Qd3 Rc7 28.Rc7 Bc7 29.e5 Ne8 30.Qb5 Nb6 31.f4 h6 32.a4 Bb8 33.a5 Nc4 34.Qb8 Ne3 35.Rg1 Qc6 36.h3 Qd7 37.Kh2 f5 38.Qb6 (38.Qb6 Nd5 39.Qd4+-) 1–0. Deglmann – Saglam, 1991.

4.h3 a5 5.e3 =.

4.h3 c6 5.e3 Be6 (5...a5 6.Nf3=) 6.Nf3 Nd7 (6...Bf5 7.d3+=) 7.d4 (7.Nd4 Ngf6+/-) 7...Nb6 (7...Bf5 8.Nh4 Be4 9.Nd2=) 8.Ng5 (8.Bd3+=) 8...Qc7 (better is 8...Bc8=) 9.Ne6+/- fe6 10.Nd2 Nf6 11.Nf3 (11.c4 g6+/-) 11...0-0-0 (better is 11...g6!?+/-) 12.Ne5+- Re8 (12...Na4 13.Nf7+-) 13.a4 Nbd7 14.b5 (14.Nf7!? Rg8+-) 14...Ne5+/- 15.de5 Nd7 (15...Ne4 16.ba6 Qa5 17.c3 ba6 18.Rb1+/-) 16.bc6 Qa5 (16...Qc6 17.c4+-) 17.c3 (17.Qd2!? Qd2 18.Kd2 bc6 19.Ba6 Kc7+-) 17...bc6 18.Bd3 (better is 18.Rb1!?+-) 18...Ne5+= 19.Qe2 (better is 19.Be2 g6 20.Rb1+/-) 19...Nc4?? (better is 19...Nd3 20.Qd3 g5=) 20.Bc4+- dc4 21.Qc4 Kc7 22.0-0 Rb8 23.Qf4?? (23.Ba3 e5 24.Rfd1+-) 23...e5=+ 24.Qc4 Rb2 25.Rfb1 Rb1 (25...Rd2!?-/+) 26.Rb1=+ g6 27.Qf7 (27.Qb3!?=+) 27...Qd5 (27...Qc3!? 28.Qe6 e4–+) 28.Qe8-/+ Kd6 29.Qb8 (better is 29.Qc8!? Bg7 30.Qg4-/+) 29...Ke6–+ 30.Qc8 Kf7 31.Qa6 Bg7 32.c4 Qd2 (better is 32...Qd6!?–+) 33.Qc6=+ Rd8 34.c5 Qc2 35.Re1 (35.Rf1 e4 36.a5-/+) 35...Bf8 (35...e4 36.Rf1-/+) 36.Qc7 (better is 36.Rf1!?=+) 36...Rd5-/+ 37.c6 0–1. PoPer – BOOKER, Live Game Caissa's Web, 2004.

4.e3 Nf6 5.Nf3 Nbd7 6.c4 dc4 7.Bc4 e6 8.d4 Be7 9.Nbd2 b5 10.Be2 Ne4 11.0-0 Ndf6 12.Ne5 Nd2 13.Qd2 Ne4 14.Qc2 Nc5 15.Qc1 Na4 16.Qc6 Kf8 17.Bf3 Ra7 18.Qc1 Rb7 1–0. BlackDemon (2650) – Viperpi (1630), FICS rated standard game, 2013.

4.e3 Nf6 5.Nf3 e6 6.c4 Nbd7 7.Nc3 c6 8.Nh4 (8.cd5 ed5 9.Be2 Bg4=) 8...Bg6 (8...Bg4 9.f3 Bh5 10.cd5 cd5 11.g3=+) 9.b5 (9.Ng6 hg6 10.f4 dc4 11.Bc4 b5=) 9...ab5 10.cb5 c5 11.Ng6 hg6 12.Bd3 b6 (12...Bd6 13.Be2=+) 13.f4 Bd6 14.0-0 (14.Bc2 Qc7=+) 14...e5 (better is 14...g5=+) 15.fe5? (15.Bc2 Ra5=) 15...Be5 (better is 15...Ne5!? 16.Be2 d4–+) 16.h3=+ Qb8 17.Qc2 c4 18.Bg6 (better is 18.Be2=+) 18...Qd6?? (18...fg6!? 19.Qg6 Kd8–+) 19.d4 cd3 20.Bd3+= Nc5 21.a4 d4 22.Ne4+= Nfe4 23.Be4 d3 24.Be5 dc2= 25.Bd6 Ne4 26.Bc7 Nd2-/+ 27.Rfc1 Nb3 28.Bb6 Na1 29.Bc7?? Ra4 30.Be5 Rb4 (30...Rb4 31.Ba1 Rb1–+; 30...Rh5 31.Ba1 Rb5 32.Kf2 Ra1 33.Rc2 Rf5 34.Kg3–+) 0–1. Dolejs,Dan E – Whitlock,Dennis R, NZCCA TT res corr0102, 2001.

4.Nf3 Nd7 5.e3 Ngf6 6.Be2 a5 7.b5 Ne4 8.0-0 Nd6 9.Nd4 Bg6 10.f4 Nf5? (better is 10...e6+=) 11.Nf5+- Bf5 12.g4 Bg6 13.f5 e5 (13...e6 14.fg6 hg6 15.Rf2+-) 14.c4 c6 15.Nc3 dc4 16.fg6 hg6 17.Bc4 f5 18.Be6 Nc5 Black prepares e4 19.gf5 Qg5 20.Kh1 Bd6 21.bc6 bc6 22.Qe2 e4 23.Rf2 Qh4 24.Rg2 Nd3 25.Na4 gf5 26.Bg7 Rh7 (26...Ke7 27.Bc4 (27.Bf5 Bh2 28.Rh2 Nf2 29.Qf2 Qf2 30.Rh8 Rh8 31.Bh8 Qf3 32.Kg1 Qg3 33.Kf1 Qf3 34.Kg1 Qg3 35.Kf1 Qf3 36.Kg1=) 27...Rh5 28.Rb1 (28.Bd3 ed3 29.Qf3 Bh2 30.Qh5 Qh5 31.Rh2 Qg4–+) 28...Bh2 29.Qh5 Qh5 30.Rh2 Nf2 31.Kg1 Nh3 32.Kh1 Nf2 33.Kg1 Nh3 34.Kh1 Nf2=) 27.Bf5 Rg7 28.Rg7 Nf2 29.Kg1 Qh2 30.Kf1 Qh8 31.Rh7 Qa1 32.Kf2 Be7 33.Qh5 Kd8 34.Rh8 Kc7 35.Qh2 Kb7 36.Ra8 Ka8 37.Qc7 Bh4 (37...Qf1 38.Kf1 Bc5 39.Nc5 a4 40.Qb7) 38.Kg2 Qb1 (38...Qf1 39.Kf1 Bf6 40.Nb6) 39.Bd7 Qb7 (39...Qg1 40.Kg1 Bf2 41.Kf2 c5 42.Nb6) 40.Bc6 Be7 (40...Qc6 41.Qc6 Kb8 42.Nc5 Bf6 43.Qb7) 41.Qb7 1–0. pozarski (2050) – N2K2001 (1945), GameColony.com, 2002.

4.b5 a5 5.e3 Bb7 6.Nf3 f6 7.d4 e6 8.c4 Ne7 9.Bd3 g6 10.0-0 Bg7 11.cd5 ed5 12.Ba3 c5 (better 12...0-0!?+-) 13.dc5+- bc5 14.Bc5 The passed pawn on b5 quickly leads to threats 14...Kf7 (14...Nd7 15.Bd4+-) 15.Nc3 Nd7 16.Ba3 (16.Bd4 Ne5+-) 16...Ne5 17.Ne5 fe5 18.Qb3 Re8 (18...Ke8 19.Rad1 Rc8 20.Be7 Ke7 21.Bb1+-) 19.Be4 Kg8 20.Rad1 Kh8 21.Nd5 Nd5 22.Bd5 (22.Rd5?! Qh4 23.f3 Bd5 24.Qd5 Rac8+-) 22...Qc7 23.b6 Bd5 24.Rd5 (24.bc7 Bb3 25.Rb1 Ba4-/+; 24.Qd5?! Qb6 25.e4 Red8+-) 24...Qf7 (24...Qb7 25.Rfd1 Rab8 26.Bd6+- (26.Ra5?! Qb6 27.Qb6 Rb6+-)) 25.Qb5 Rab8 26.Rd7 White prepares b7 26...Qe6 (26...Qf5 27.b7 Bf8 28.Bf8 Qf8 29.Rc1+-) 27.b7 e4 (27...Bf8 28.Bf8 Rf8 29.Rc1+-) 28.Bd6 Be5 29.Bb8 Bb8 30.Rfd1 (30.Rfd1 Kg8 31.Rd8+-) 1–0. DEFFM – GuestZYTB, freechess.org, 2020.

4.b5 a5 5.e3 c6 6.Nf3+= Bd7 (6...e6 7.bc6 Nc6 8.Ra3+=) 7.d4 (7.Ne5 e6+=) 7...Nf6 (7...Bg4 8.h3 Bf3 9.Qf3+=) 8.c4 (8.Bd3 Bg4+=) 8...cb5 9.ab5 dc4 (9...Bg4 10.Ba3+=) 10.Bc4 e6 11.Ne5 Bb4 (11...Bc8 12.Qf3 Ra7 13.Nc3+=) 12.Nc3 0-0 (12...Bc8 13.Qf3 Ra7 14.0-0+=) 13.0-0 Bd6 (13...Bc8 14.Qf3 Ra7 15.Rfc1+=) 14.Qf3+- Qc8?? (better 14...Ra7+-) 15.Qa8+- Be5 (15...Ng4 16.Ng4 Qc4 17.Qa7+-) 16.de5 Qc4 17.ef6 g6 (17...Bb5 18.fg7 Rc8 19.Qa7+-) 18.Qf3 1–0. Anonymous – Anonymous, lichess.org, 2020.

4.b5 a5 5.e3 Bf5 6.Nf3 h6 (6...Nf6 7.Be2+=) 7.c4 (7.Be2 Nf6+=) 7...c6 (7...e6 8.Nd4 Bg6 9.cd5 ed5 10.Be2+=) 8.Nc3 (8.Ne5 Qc7+-) 8...e6 (8...Nf6 9.Rc1 Bg4 10.bc6 dc4 11.h3+-) 9.Nd4 (9.bc6 Nc6 10.cd5 ed5+-) 9...cb5 (9...Ne7!?+-) 10.Nf5+- ef5 11.Nb5 f6? (better 11...Na6+-) 12.Qh5 Kd7 13.cd5 Ne7 (13...g5 14.Bd3 Kc8 15.Rc1 Bc5 16.Bf5 Kb7 17.d6+-) 14.d6 Nbc6 15.de7 Ne7 (15...Ke7 16.Qf5 Qd7 17.Qe4 Qe6 18.Qe6 Ke6 19.Nc7 Kd7 20.Na8+-) 16.Ra3 Kc8 17.Rd3 Qd3 (17...Nd5 18.Qf5 Qd7 19.Qe4+-) 18.Bd3 (18.Bd3 Kb7 19.Qf3 Nc6 20.Nd4+-) 1–0. GuestFDSR – GuestVHPM, freechess.org, 2020.

4.e3 Bb7 (4...e5 5.Be5 Nc6 6.Bf4 Bb4 7.Nf3=+) 5.d4 (5.Nf3 Nf6=) 5...Nf6 (5...e5 6.b5 e4 7.Nd2=+) 6.Nf3 e6 7.b5 a5 (7...Bb4 8.Nbd2=) 8.Be2 (8.Bd3 c5=) 8...Bd6 (8...Bb4 9.Nbd2=) 9.Nbd2 c6 10.c4 0-0 11.Rc1 dc4 12.Bc4 cb5 (12...Nbd7 13.bc6 Bc6 14.0-0=) 13.Bb5 Ba6 14.Qe2 Bb5 15.Qb5 Nbd7 (15...Bb4!?=) 16.0-0+= Rc8 17.Rc8 Qc8 18.Rc1 (better 18.Nc4 Qc7 19.Rc1+-) 18...Qb8? (better 18...Qb7+=) 19.e4+- Bb4 (19...Rd8 20.e5+-) 20.e5 Bd2 21.Nd2 1–0. Anlauf,Wolfgang – Graf,Wolfgang, 17OBSen–Rowy Poland, 2008.

4.e3 Bb7 5.Nf3 f6 6.c4 e5 7.Ne5 (better 7.Nc3+-) 7...fe5=+ 8.Qh5 g6?? (8...Ke7 9.Qe5 Kf7 10.cd5 Qd6 (worse 10...Bd5 11.Nc3 c6 12.Nd5 cd5 13.Qh5 Ke7 14.Be2+=; worse 10...Qd5 11.Qc7 Qd7 12.Bc4 Ke8 13.Qb6+=) 11.Qf5 Nf6=+) 9.Qe5+- (9.Qe5 Kf7 10.Qh8+-) 1–0. GuestLBCN – GuestLFTV, freechess.org, 2020.

4.e3 c5 5.bc5 bc5 6.Nf3 =.

4.e3 Nc6 5.b5 ab5 (5...Na5 6.Nf3=) 6.ab5+= Ra1 7.Ba1 Na7 8.Nf3 Bd7 (8...Nf6 9.Be5+=) 9.c4 dc4 (9...e6 10.Qa4 Nc8 11.Ne5+=) 10.Bc4 Bb5 (10...e6 11.Qa4 Nc8 12.0-0+=) 11.Bb5 (11.Bf7 Kf7 12.Ne5 Ke8 13.Qh5 g6 14.Ng6 hg6 15.Qg6 Kd7 16.Bh8 Nh6+-) 11...Nb5+= 12.Qa4 Qd7?? (better 12...c6+=) 13.Ne5+- Qd5 (13...Qc8 14.Qb5 c6 15.Nc6 Nf6+-) 14.Nc3 Qe5 15.Nb5 Qg5 (15...Qa1 16.Qa1 Nf6+-) 16.Nd6 Kd8 17.Qe8 1–0. DEFFM – GuestLFVZ, freechess.org, 2018.

4.e3 e6 5.Nf3 Nf6 (5...Bb4 6.Bg7 Bd2 7.Nbd2+-) 6.b5 c5 7.c4 (7.a5 ba5 8.Ra4 c4 9.Bf6 gf6-/+) 7...Be7 (7...Bd6 8.a5=+) 8.Be2 (8.a5 ba5 9.ba6 0-0-/+) 8...Bb7 (8...dc4 9.Bc4 0-0 10.d4=+) 9.0-0 0-0 10.d4 (10.ba6 Na6 (worse 10...Ra6 11.cd5 Ra5 12.Bc3+=) 11.d3 Nb4=+) 10...Nbd7 (10...dc4 11.Bc4 Bd5 12.Bd5 Nd5 13.e4=) 11.Nbd2 (11.Nc3 cd4 12.Nd4 e5+-) 11...a5 (11...Bd6 12.Bd3=) 12.h3 (12.Rc1 Bd6=) 12...Rc8 (12...dc4 13.Nc4 Bd5 14.Rc1=) 13.Rc1 cd4 (13...dc4 14.Nc4 Bd5 15.dc5 Nc5 16.Be5=) 14.Bd4 Nc5 15.Bc5 (15.Ne5 Nfe4=) 15...Bc5=+ 16.Nb3 Ba3 17.Rc2 Ne4 18.Nfd2 (18.Qd4 dc4 19.Bc4 Qd4 20.Nbd4 Nc5=+) 18...dc4 (18...Nd2!? 19.Qd2 Qg5=+) 19.Nc4= Bd5? (19...Be7 20.Qd8 Rfd8 21.Bd1=) 20.Qd4?? (better 20.Na3 Bb3 21.Rc8 Bd1 22.Rd8 Be2 23.Rf8 Kf8 24.Re1+-) 20...Bc5 (20...Bd6 21.Bd3 Bc4 A) 22.Qe4?? Bd3 23.Rc8 Be4 (23...Qc8?! 24.Qd3 Rd8 25.Rc1=) 24.Rd8 Rd8–+; B) 22.Bc4+=) 21.Qb2 (21.Nc5 Rc5 22.Rfc1 Qh4+=) 21...Bc4 (21...Qg5 22.Bf3 Ng3 23.Rfc1 Ne2 24.Re2 Bf3 25.g4–+) 22.Rc4= Nf6 (22...Qh4 A) 23.Nc5?! Rc5 (23...bc5? 24.Qc2+-) 24.g3 Rg5+=; B) 23.Qe5 f5 24.Nc5 bc5 25.Qe6 Kh8 26.Bf3+-) 23.Nc5 (23.Rfc1 Qd6 24.Nc5 Rc5 25.Rc5 bc5+-) 23...bc5 (23...Rc5 24.Rc5 bc5 25.Rd1+=) 24.Bf3 Nd5 (24...Qb6 25.Qe5+=) 25.Rd1 Qe7 (25...Qg5!?+-) 26.Bd5+- ed5 27.Rd5 Rfd8 28.Rd8 (28.Qe5 Qe5 29.Re5 Rd1 30.Kh2 Rd2+-) 28...Rd8+- 29.Qc3 (29.Qc2 Rd5+-) 29...Rd1 30.Kh2 Qc7 (30...Qd6 31.g3 Rd2 32.Rf4+-) 31.g3 (31.f4 Rd5+-) 31...Rd5 (31...Qb7 32.e4+-) 32.e4+- Rh5 33.f4 (33.Qf3 Qe5 34.Qg4+-) 33...Qc8 (33...Qb6!?+-) 34.f5+- h6 (34...Qb7 35.Rc5 h6 36.Qf3+-) 35.Rc5 Qb7 36.Rc8 (36.Qf3 g6+-) 36...Kh7 37.Qc6 (better 37.Qc2+-) 37...Qe7? (37...Qa7 38.Qc5 Qd7 39.Qc2+-) 38.b6 (38.Qe8 Qe8 39.Re8+-) 38...Qb4 39.b7?? (39.e5 Rf5 40.Rh8 Kh8 41.Qc8 Kh7 42.Qf5 Kg8 43.Qc8 Kh7 44.Qc6 Qb2 45.Kh1 Qe5 46.Qc2 g6 47.Qf2+-) 39...Qd2= 40.Kg1 White threatens strongly Qc2 40...Qe3 (better 40...Qe1 41.Kg2 Qe2 42.Kg1 Qe1 43.Kg2 Qe2 44.Kg1 Qe1=) 41.Kf1+- Qf3 42.Ke1 Qg3 43.Kd2?? (43.Kd1 Qb3 44.Kc1 Qa3 45.Kc2 Qa2 46.Kc1 Rh3 47.Rh8 Kh8 48.b8Q Kh7 49.e5–+) 43...Qf2 (43...Rh3 44.Qb5 Qe3 45.Kd1 Rh1 46.Kc2 Rh2 47.Kb1 Qe4 48.Ka1 Qe1 49.Rc1 Qc1 50.Qb1 Qc3 51.Qb2 Qb2) 44.Kc1+- Rh3 The mate threat is Rh1 45.Qc2?? (45.Rh8 Kh8 46.b8Q Kh7 47.Qbd6 Rh1 48.Qd1 Qe3 49.Kc2 Rh2 50.Kb1-/+) 45...Rh1?? (45...Qe1 46.Qd1 Qe3 47.Kb1 Qe4 48.Rc2 Rh1–+) 46.Kb2-/+ Qb6 47.Qb3?? (47.Ka2 Qb7 48.Rc7=) 47...Rb1!!–+ 48.Kb1 A deflection. Threatening mate: Qxb6 48...Qb3 49.Kc1 Qb7 50.Rc4 Qb3 51.Rc7 (51.Rc2 Qe3 52.Kb2 Qe4–+) 51...Qe3 52.Kd1 Qe4 (52...Qe4 53.Rc8 Qa4 54.Ke2 Qe4 55.Kd1 a4–+; better 52...Qg1!? 53.Ke2 Qh2 54.Ke3 Qc7 55.Kd4–+) 0–1. Ruhle,Ernst Albrecht – Weibrecht,Carl, Wch Seniors Bad Wildbad, 1993.

4.Nf3 c5 =.

4.b5 Na5 5.e3 Bd7 6.Nf3 e6 7.Be2 Nf6 8.0-0 Be7 9.d3 c6 10.c4= dc4 11.dc4+= 0-0 12.Bc3 b6 13.Ne5 Be8 14.Nd2 cb5 15.ab5 ab5 16.cb5 Bd6 17.Nec4 Nc4 18.Bc4 Ra1 19.Qa1 Be7 20.Nf3 Qc7 21.Rd1?? Qc4–+ 22.Ne5 Qb5 23.Rb1 Qd5 24.h3 Ne4 25.Bd4 Bc5 26.Ng4 Bd4 27.ed4 Bd7 28.Rb6 Bc6 29.Ne3 Qd7 30.Qb1 h6 (31.Qb2 Rc8–+; 30...Rd8 31.Qc1 Ba8 32.Qb2–+) 0–1. stoker – lowbrow21, Live Game Caissa's Web, 2006.

4.b5 Na5 5.e3 Bd7 6.Nf3 e6 7.Ne5 ab5 8.Qh5 The mate threat is Qxf7 8...Qf6 (8...Qe7!? 9.ab5 Nf6+=) 9.ab5+- Bd6? (better 9...Qe7+-) 10.Ra2 Be5? (10...d4 11.Bd4 Bc8+-) 11.Be5 (11.Qe5?! h6 12.Qc7 Qd8 13.Qd8 Kd8 14.Bg7 Rh7+-) 11...Qg6 (11...Qh6 12.Qh6 Nh6 13.Bc7+-) 12.Qg6 hg6 13.Bc7 (13.Bg7?! Rh7 14.Bd4 Ne7+-) 13...Nf6 14.Ra5 (14.Ba5?! b6+-) 14...Rc8 (14...0-0 15.Ra8 Ra8 16.Bd3+-) 15.b6 0-0 (15...Ke7 16.Nc3+-) 16.Ra7 Bc6 17.Nc3 Ra8 18.Nb5 Bb5 19.Bb5 Nd7 (19...Ra7 20.ba7 Ra8+-) 20.Bd7 f5 21.0-0 (better 21.Be6 Kh7 22.Bd5 Rae8+-) 21...Kf7 22.Rfa1 Ra7 23.ba7 Ke7 24.a8Q (better 24.Bb8 Rd8 25.Bb5+-) 24...Ra8 25.Ra8 Kd7 26.Be5 Ke7 27.Rg8 b5 28.Rg7 Kf8 29.Rg6 Kf7 30.Rg7 Kf8 (30...Ke8 31.h4 b4 32.h5 b3 33.cb3 d4 34.h6 de3 35.h7 ef2 36.Kf2 f4 37.h8Q) 31.h4 b4 32.h5 b3 33.cb3 d4 (33...f4 34.h6 fe3 35.h7 ef2 36.Kf2 d4 37.h8Q) 34.h6 de3 35.h7 ef2 36.Kf1 f4 37.h8Q 1–0. GuestYDSJ – GuestHCBB, freechess.org, 2020.

4.b5 Na5 5.e3 e6 6.Nf3 Nc4 7.Bd4 ab5 8.ab5 Ra1 9.Ba1 Nf6 10.d3 (10.Bc4!? dc4 11.Qe2+=) 10...Nd6 11.Nc3 Be7 12.Be2 0-0 13.0-0 c6 14.d4 Qb6 15.bc6 bc6 16.Ne5 c5 (16...Qc7!?=) 17.Na4+= Qc7 18.Nc5 Nde4 19.Ne4 Ne4 20.Bd3 Nd6 21.c4 (21.Qh5 g6 22.Qg4 Kg7+/-) 21...dc4 22.Qc2 Bf6 (22...h6 23.Rc1+= (worse 23.Bc4 Ba6-+)) 23.Nc4 (23.Bh7 Kh8 24.Bd3 Ba6+/-) 23...Nc4+/- 24.Bh7?? (better 24.Qc4 Qc4 25.Bc4+/-) 24...Kh8=+ 25.Bd3 Ba6 26.Bc4 (26.d5 ed5 27.Qe2=) 26...Bc4 27.Rc1 Rc8 28.Qd2 Qd6 29.Qa5 Qa6 30.Qa6 Ba6 31.Rc8 Bc8 32.Kf1 Bb7 33.g3 Kh7 34.Ke2 Kg6 35.Kd3 Kf5 36.Bc3 Kg4 37.h4 (37.Ke2 Kh3-+) 37...Kf3 38.Be1 Be4 39.Kd2 Kg4 (better 39...Be7 40.h5-+) 40.Ke2 Bf3 41.Kd3 Kh3 42.e4 Kg4 (42...Kg2 43.Ke3-+) 43.Ke3 (43.Bb4 g5 44.hg5 Bg5-+) 43...Bd1 (43...g5 44.hg5 Bg5 45.Kd3-+) 44.e5 (44.Kd2!? Bb3 45.Ke3-+) 44...Be7-+ 45.Bd2 g5 46.h5 (better 46.hg5 Bg5 47.Kd3-+) 46...Kh5 47.f3 Kg6 48.f4 Kf5 49.fg5 Bg5 50.Kd3 Bd2 51.Kd2 Bh5 (better 51...Ke4!? 52.Kc3-+) 52.Ke3 Kg4 53.Kf2 Bg6 54.Kg2 Be4 55.Kf2 Bf3 0-1. Delaza62 (1710) - balex (1740), Rated Classical game, lichess.org, 2013.

4.b5 Na7 5.e3 a5 6.Nf3+= b6 (6...Bg4 7.h3 Bh5 8.Be2+=) 7.c4 Bb7 (7...e6 8.cd5 ed5 9.Bd3+=) 8.Be2 (8.cd5 Qd5 9.Nc3 Qd8+-) 8...dc4 9.Bc4 (9.0-0 e6+=) 9...Bd5 (9...e6 10.0-0+=) 10.Bd5+- Qd5 11.0-0 (11.Nc3 Qd6 12.d4+-) 11...0-0-0 (11...c6 12.Nc3 Qd7 13.Ne5+-) 12.Nc3 (12.Qc2 f6+-) 12...Qc4 (12...Qd3 13.Ne5 Qf5 14.Ne4+-) 13.Ne5 (13.Rc1 Nf6+-) 13...Qe6+- 14.Ne2 (better 14.d4 f6 15.Nf3+-) 14...f6?? (better 14...Nh6+-) 15.Nf4+- Nh6 (15...Qf5 16.Nf7 e5+-) 16.Ne6 Rd5 17.Qf3 Rd2 18.Qa8 1–0. DEFFM – Guesting, freechess.org, 2018.

4.b5 Na7 5.e3 Bd7 6.ba6+= ba6 (6...b6 7.Nf3+=) 7.Ba6+- Nc6 8.Bb5 e6 9.Nf3 Nf6 10.0-0 Be7 11.a5 (better 11.Nc3+-) 11...Ra5?? (better 11...Na5 12.Bd7 Qd7+=) 12.Bc6+- Ra1 13.Bd7 (13.Ba1?! Bc6 14.Ne5 Bb7=) 13...Nd7 14.Ba1 1–0. GuestLRLD – GuestCZRK, freechess.org, 2018.

4.b5 Na7 5.e3 Nf6 6.Nf3=.

4.b5 Nb4?? 5.c3 Nd3 6.ed3 ab5 7.ab5 Ra1 8.Ba1 b6 (8...e5 9.Qe2 Bd6 10.c4+-) 9.Nf3 e6 10.Be2 Nf6 (10...Bd6 11.0-0+-) 11.Ne5 (11.0-0 Bd6+-) 11...Bd6 (11...Bb7 12.0-0+-) 12.Nc6 Qd7 13.c4 Bb7 14.Bf6 gf6 15.cd5 ed5 16.Nc3 Qe6 (16...Bc6 17.bc6 Qc6 18.Bf3+-) 17.0-0 (17.d4 0-0+-) 17...Rg8 (17...Bc6 18.bc6 d4 19.Bg4 Bh2 20.Kh2 Qd6 21.Kg1 dc3 22.Bd7 Kf8 23.dc3+-) 18.Bf3 f5 (18...Qh3 19.g3 Bc6 20.bc6 d4+-) 19.Re1 d4 (19...Kd7 20.Re6 fe6 21.Qa4+-) 20.Re6 fe6 21.Nd4 Bc8 22.Bc6 Ke7 (22...Kd8 23.Qh5 Rf8 24.Qh6+-) 23.Qh5 Rf8 24.Qg5 (24.Qh4 Kf7 25.Qh7 Kf6 26.Nf5 ef5 27.Nd5 Ke5 28.Qg7 Ke6 29.d4 Bh2 30.Kf1 Bd6 31.Qg6 Rf6 32.Qf6) 24...Kf7 25.Bf3 c5 26.Bh5 1–0. DEFFM – GuestYDKQ, freechess.org, 2018.

4.b5 Nb8 5.e3 ab5 6.ab5 Ra1 7.Ba1 e6 8.Nf3 Nd7 9.c4 Ngf6 10.Qc2 dc4 11.Bc4 Bd6 12.0-0 b6 13.d4 Bb7 14.Nbd2 Ne4?? (better 14...Nd5+=) 15.Ne4+- 1-0. DEFFM – GuestHGZQ, freechess.org, 2021.

5.ab5 Na7 6.e3 b6 7.c4 Bb7 8.Nf3 Nf6 9.Qb3 e6 10.Nc3 dc4 11.Bc4 Bd6 12.Be2 0-0 13.0-0 c6 14.Ra2 cb5 15.Rfa1 b4 16.Ra7 Bf3 (better 16...bc3!? 17.Rb7 cb2 18.Qb2 Nd5+=) 17.Bf3+= (worse 17.gf3 Ra7 18.Ra7 bc3 19.Qc3 Qb8=+) 17...Ra7 18.Ra7 bc3 19.Bc3 (19.Qc3 b5 20.Rb7+=) 19...Bb8?? (better 19...Bh2 20.Kf1 Qd3 21.Be2 Qf5=+) 20.Rb7+/- Nd5 21.Bd5 ed5 22.Qb2 (22.Qb6 Qb6 23.Rb6 Rd8+-) 22...Qh4 (better 22...Qc8!? 23.Rb6 Qg4+/-) 23.g3+- (23.Bg7?! Qg4 24.f4 Qg7 25.Qb6 Qa1 26.Kf2 Qa8=) 23...Qg4 (23...Qe4 24.Rb6 Ba7 25.Bg7 Bb6 26.Bf8 Kf8 27.Qb6+-) 24.Rb6 (better 24.Qb6!? Qc8+-) 24...Bc7 25.Rb7 Bd8 (25...Rc8 26.Be5 Be5 27.Qe5+-) 26.Rb4 (26.Qb5 Qe6+-) 26...Qg6 (26...Qg5 27.Rb5+-) 27.Rb5 h5 (27...Bc7 28.Rd5 h6 29.d3+-) 28.Qb1 (28.Qb3 Bf6+-) 28...f5 (better 28...Qb1!? 29.Rb1 Bc7+-) 29.Qd3 h4 (29...Qe6 30.Qd5 Qd5 31.Rd5+-) 30.Rd5 (30.Qd5!? Kh7+-) 30...h3?? (30...Be7+-) 31.Rd8 1-0. FERNANDO_2013 (1985) - inanityname (2030), Rated Classical game, lichess.org, 2019.

5.ab5 Na7 6.e3 b6 7.Nf3 Bb7 8.d4 (8.Nc3!? Nf6+-) 8...e6 9.Bd3 Nf6 10.0-0 (10.Ne5 Bb4 11.c3 Bd6+=) 10...Be7 11.Ne5 (11.Nbd2 0-0+-) 11...0-0+= 12.Nd2 Bd6 (12...Nd7 13.f4+=) 13.Qf3 Qc8 (13...Nd7 14.Qh3 h6 15.f4+-) 14.Qh3 (14.Rfd1 Nd7+-) 14...h6 15.Qg3 (15.Rfb1 Nd7+-) 15...Nh5? (better 15...Ne4!? 16.Ne4 de4=) 16.Qf3 Nf6 17.Qh3 (17.g3 Be5 18.de5 Nd7+-) 17...c5 (17...Qe8 18.c4=) 18.c4 (better 18.dc5 Qc5 19.Bd4+-) 18...dc4? (better 18...Ne4 19.Ne4 de4+=) 19.Ndc4+- Bc7?! (19...Qd8 20.Nd6 Qd6+-) 20.dc5 Nb5 21.Nb6 Bb6 22.cb6 (22.Bb5?! Ra1 23.Ra1 Qc5=) 22...Ra1 (22...Nd6 23.Ra8 Ba8 24.Rc1+-) 23.Ra1 (23.Ba1?! Nc3 24.Qh4 Qc5+-; 23.Bb5?! Rf1 24.Bf1 Ne4=) 23...Qc5 (23...Nd6 24.Ng4 Ng4 25.Qg4+-) 24.Ng4 Ng4 25.Qg4 e5 (25...g5 26.Ra5 Qd6 27.Qc4 (27.Rb5 Qd3 28.Rc5 Rc8 29.Rc8 Bc8=+) 27...Qb6 28.Rb5+-) 26.Qf5 (26.Ra5!? Qd6 27.Bb5 Qb6 28.Be5 g5+-) 26...g6 27.Qf6 (better 27.Qe5 Qe5 28.Be5+-) 27...Nd6?? (27...Re8 28.Ra5 Qd5+-) 28.Be5 Ne8 29.Qh8 1–0. Anonymous – Anonymous, lichess.org, 2020.

5.ab5 Nb4?? 6.Ra8+- (6.Ra8 d4 7.Bd4+-) 1–0. GuestMRCK – GuestGBLS, freechess.org, 2019.

5.ab5 Nb4?? 6.Ra8 Qd7 (6...d4 7.Bd4! Nf6 8.Bf6 ef6 9.e4+-) 7.e3 (7.c3 Nf6+-) 7...e6 (7...d4 8.Bd4 f6 9.Bc5+-) 8.c3 Nf6 9.cb4 Bb4 10.Nf3 0-0 11.Be2 Ne4 12.0-0 Qe7 13.d3 Nf6 14.Nc3 Qd6 (14...Bd6 15.Qb3+-) 15.Qb3 e5 (15...Qe7 16.Rfa1+-) 16.d4 (16.Na2!? Bc5 17.Be5 Qe7+-) 16...ed4 17.Nd4 Bg4 (17...Bc5 18.Na4 b6 19.Nc5 bc5 20.Nc6+-) 18.Rf8 Kf8 19.h3 (19.Ra1 Be6+-) 19...Be2 20.Nde2 Bc5 21.Rd1 (21.Rd1 c6 22.Na4+-) 1–0. BeepBeepImAJeep (2565) – carlodimarzio, lichess.org, 2017.

6.Ba1 Na5 7.e3 b6 8.Nf3 Bd7 9.Nc3 e6 10.Ne5 Nf6 11.Bd3 Bb4 (11...Nb7 12.0-0+=) 12.0-0 Bc3 (better is 12...0-0!?+=) 13.Bc3+- c6 (better is 13...Nb7 14.Ng4 Nh5+/-) 14.Ba5 ba5 15.bc6 Bc6 (15...Bc8+-) 16.Nc6 Qb6 (16...Qc7 17.Qb1+-) 17.Qb1 Qc6 (17...Qc7+-) 18.Bb5 (18.Bb5 Qd7 19.Bd7 Nd7 20.Qb5+-) 1–0. Heini – chessenemy, internet, 2016.

6.Ba1 Na5 7.e3 b6 8.Nf3 Nf6 9.Bd4 +=.

6.Ba1 Na5 7.e3 b6 8.Nf3+= Bg4 (8...Nf6 9.Be2+=) 9.Be2 (9.h3 Bh5+=) 9...e6 10.0-0 (10.h3 Bf3 11.Bf3 Nf6=) 10...Nf6 11.d3 (11.Ne5 Be2 12.Qe2 Bd6+=) 11...Be7 12.Nbd2 0-0 13.h3 Bf3 14.Nf3 Qd7 (14...c6 15.Qb1+=) 15.c4+= dc4 (15...c6 16.Qb1+=) 16.dc4 Qd1 (16...c6 17.Qb1+=) 17.Rd1 (worse is 17.Bd1 Nc4 18.Be2 Nd6+=) 17...Rd8 (17...Ra8 18.Kf1+/-) 18.Rd8+/- Bd8 19.Bd3 (19.Be5 c6+=) 19...h6 (19...Nd7 20.Bd4+=) 20.Ne5 (20.Kf1 c6+/-) 20...Kf8 (20...Ne8 21.Nd7+/-) 21.Bc3+/- Nb3 (21...Be7 22.Kf1+/-) 22.Nc6 Be7 23.Be5 Bd6 (23...Ne8 24.Kf1+=) 24.Bd6 (24.Bf6 gf6 25.g4 Na5+/-) 24...cd6+= 25.Na7 (25.Kf1 d5 26.Ke2 Nc1 27.Kd2 Nd3 28.Kd3 dc4 29.Kc4 Ne4=) 25...Nc5= 26.Be2 Ncd7 (26...Ke7 27.Nc6 Kd7 28.Kf1=) 27.Bf3 (27.Nc8 d5+=) 27...Ne5= 28.Be2 Ke8 (better is 28...Ned7!?=) 29.Nc8+/- Ned7 30.Nd6 Ke7 31.Nc8 Kd8 32.Na7 Kc7 33.Nc6 Kd6 34.f3 Ne5 (34...Ne8 35.Nb4+/-) 35.Nb4 (35.Ne5 Ke5 36.g3 Kd6+=) 35...Nc4 36.Bc4 Kc5 37.Be6 fe6 38.Nc6 Nd5 (38...Kb5 39.Nd4 Kc4 40.Ne6+=) 39.Kf2 (39.Nd4 e5 40.Ne6 Kb5+=) 39...Nc7 40.Nd4 g6 Exerts pressure on the isolated pawn (40...e5!? 41.Nf5 Ne6+=) 41.f4+/- Kd5 (41...e5 42.fe5 Nb5 43.Nb5 Kb5 44.Kf3+/-) 42.Kf3 e5 (42...g5 43.g3+/-) 43.fe5 Ke5 The passed pawn on e3 will become decisive later 44.h4 Kd5 45.Kf4 Kd6 (45...Kc4 46.Ke5+/-) 46.Ke4 (46.e4 Ne8+-) 46...Nd5+/- 47.g4 Nf6 48.Kf3 Kd5 (48...Kc5 49.g5 hg5 50.hg5+/-) 49.Nc6 Kc5 50.Na7 (50.Ne5 g5 51.hg5 hg5+-) 50...Kd5 (50...Nd5 51.Ke4+/-) 51.g5 (51.Kf4!? Ke6 52.e4+-) 51...hg5+/- 52.hg5 Nd7 (52...Ne4 53.Kg4+=) 53.e4 (53.Nc6 Kc5 54.Nd4 Kd5+=) 53...Kd4 (53...Kc5 54.Kf4+=) 54.Kf4 (54.Nc6 Kc4+=) 54...Kc5 55.e5 Kd5 (55...Nf8 56.Kg3+=) 56.Nc6 (56.Nc8!? Ke6 57.Ke4+=) 56...Nf8+= 57.Ne7 Kc5?? (better is 57...Kd4+=) 58.Ng6+- Ng6 (58...Ne6 59.Kf5 Ng7 60.Kf6 Ne8 61.Kf7+-) 59.Kf5 Nf8 (59...Ne7 60.Kf6 Nd5 61.Kf7+-) 60.g6 Ng6 61.Kg6 Kd5 (61...Kb5 62.e6+-) 62.Kf6 (62.Kf6 Kc4 63.e6+-) 1–0. Roczniak,Jan – Swieton,R, corr Poland, 1983.

6.Ba1 Na5 7.e3 Bf5 8.Nf3 (8.Bc3 c5 9.bc6 Nc6 10.Nf3 Nf6 11.Bb5 Qb6 12.Be2=) 8...e6 9.Be2 Nf6 10.Nh4 Bg6 11.0-0 Nc4 12.d3 +=.

6.Ba1 Na5 7.e3 f6 8.Qh5 g6 9.Qh4 Bg7 (9...e5 10.Nf3 Nh6 11.Qa4=) 10.Nf3+= e5 11.Be2 (11.Bc3 b6+=) 11...Ne7= 12.Qa4 b6 13.c4 (13.0-0 0-0=) 13...Be6 (13...Nc4!? 14.Nc3 Be6-/+) 14.cd5= Bd5 15.Nc3 Be6 (15...Bb3 16.Qh4=) 16.d4 ed4 (16...Bb3!? 17.Qa3 0-0+=) 17.Nd4+- Bf7 18.0-0 0-0 19.Bb2 Qd6 20.Rd1 Bb3?? (better 20...Qe5+-) 21.Nb3+- (21.Nb3 Qe5 22.Na5 ba5 23.Nd5+-) 1–0. GuestCMGY – GuestQHML, freechess.org, 2019.

6.Ba1 Na5 7.e3 Nf6 8.Nf3 (8.Be2 Bf5 9.Nf3 e6 10.0-0 Bg4 11.d3 Bd6 12.c4+=) 8...Bg4 9.h3 Bh5 10.g4 Bg6 11.Ne5 e6 12.h4 +=.

6.Ba1 Na5 7.Nf3 f6 8.d4 e6 9.Nbd2 c5 10.bc6 Nc6 11.e4 Nh6 12.Be2 +=.

6.Ba1 Nb8 7.e3 A) 7...Nf6 8.Be2 (8.Nf3 e6 9.Be2 Nbd7 10.Ne5 Ne5 11.Be5 Bd6 12.Bd6=) 8...e6 9.f4 Nbd7 10.Nf3 Be7 11.0-0 0-0 12.Ne5=; B) 7...Nh6 8.Nf3 (8.Be2 f6 9.f4 e6 10.Nf3 Bd6 11.0-0 Nd7 12.Nc3=; 8.Bd3 Nd7 9.Nf3 f6 10.Nc3 Nb6 11.e4 d4 12.Nd5=; 8.f4 Bg4 9.Be2 Be2 10.Ne2 e6 11.0-0 Qd7 12.Nd4=; 8.b6 cb6 9.Nf3 Nc6 10.Bb5 f6 11.Nc3 e5 12.Qb1=) 8...f6 9.c4 dc4 10.Bc4 Nf7 11.d4 Nd6 12.Bd3+=; C) 7...Nd7 8.f4 Ndf6 9.Be2 Bf5 10.Nf3 Nh6 11.0-0 e6 12.Nd4+=; D) 7...e6 8.Be2 Nd7 9.Nh3 Ngf6 10.0-0 Bd6 11.f4 c5 12.bc6=.

6.Ba1 Nb8 7.Nf3 e6 (7...Bg4 8.e3 e6 9.h3 Bf3 10.Qf3 Nd7 11.Be2 Qa8 12.Bc3=; 7...Nf6 8.e3 e6 9.Be2 Nbd7 10.0-0 Bd6 11.Nd4 0-0 12.f4=; 7...f6 8.d4 e6 9.Nbd2 Ne7 10.e3 Nd7 11.Bd3 c5 12.bc6+=) 8.e3 Nf6 9.Ne5 Nbd7 10.Nd7 Bd7 11.Be5 Bd6 12.Bd6 =.

6.Ba1 Nd4 7.Bd4 e5 (7...Qd6 8.Nf3+-) 8.Be5 Qg5 (8...Nf6 9.Nf3+-) 9.Nf3 (better 9.Bc7 Bc5 10.Nc3+-) 9...Ne7 (9...Qd8+-) 10.Ng5 c5 11.e3 (better 11.Bd6 f6 12.Nf3 Nf5 13.Bf8 Rf8+-) 11...d4 12.Bc4 de3 13.Bf7 Kd8 14.de3 Bd7 (14...Nd5 15.Qd5 Bd7 16.Be6 Bd6 17.Qd6 Ke8 18.Qd7 Kf8 19.Bg7) 15.Be6 (15.Qd6 Nf5 16.Ne6 Kc8 17.Qc7) 15...Nc6 (15...Nd5 16.Qd5 Bd6 17.Qd6 Ke8 18.Qd7 Kf8 19.Bg7) 16.Qd7 1–0. GuestVPGH – GuestGZLH, freechess.org, 2018.

6.Ba1 Ne5?? 7.Be5+- e6 (7...f6 8.Bg3+-) 8.e3 Ne7 9.Nf3 Ng6 (9...f6 10.Bg3+-) 10.Bb2 h6 (10...f6 11.d4+-) 11.c4 Be7 (11...dc4 12.Bc4 Nh4 13.Nh4 Qh4 14.d3+-) 12.Bg7 Rh7 13.Bb2 Bc5 14.d4 Bb4 15.Nc3 c6 16.cd5 cd5 17.Bd3 Rg7 18.0-0 (18.Qa4 Bd6+-) 18...Bd7 (18...Nh4 19.Nh4 Qh4 20.Qf3+-) 19.Qa4 Bd6 20.Ba3 Qb6 (20...Bb8+-) 21.Qa8 Ke7 22.Na4 Qc7 23.Rc1 Qd8 (23...Bc6 24.Bd6 Qd6 25.bc6 bc6 26.Bg6+-) 24.Bd6 Ke8 25.Qb7 1–0. DEFFM – GuestXMGY, freechess.org, 2018.

7.c4 dc4 8.Qa4 Nb5 9.Qb5 c6 10.Qc4 e6 (10...Be6 11.Qb4 b5 12.Nf3+-) 11.e3 (11.Nf3 Nf6+-) 11...Ne7 (11...Nf6 12.Nf3+-) 12.Nf3 f6 (12...b5 13.Qc1+-) 13.Bd3 (13.Nc3 b5 14.Qb3 Ng6+-) 13...b5 (13...Nd5 14.0-0+-) 14.Qc2 Bb7 (14...b4 15.0-0+-) 15.0-0 (15.Nc3 Nf5+-) 15...Nd5 (15...b4 16.Rc1+- (16.Bh7?! Qa8 17.Nc3 bc3+-)) 16.Bh7 Ne7 (16...b4 17.d4 Bd6 18.Bg6 Kf8 19.Bd3+-) 17.Bd4 (better 17.Nc3 Kf7+-) 17...f5 (17...c5 18.Bc5 Bf3 19.Bg6 Kd7 20.Be7 Qb8+-) 18.Ng5 Qd6 (18...Qd5 19.Nc3 Qd6 20.Qb3+-) 19.Bc5 Qb8 (19...Qd5 20.Qc3+-) 20.f4 Kd7 (20...b4 21.Rc1 Ba8 22.Qd3+-) 21.Qd3 Ke8 22.e4 b4 23.Qc4 (better 23.ef5 Nd5 24.Bg6 Kd8 25.Ne6 Kd7+-) 23...Qc8 (23...Bc8 24.Bb4 Qb5 25.Na3 Qc4 26.Nc4+-) 24.Qb4 Ba6 (24...Qd7 25.ef5 Nd5 26.fe6 Bc5 27.Qc5+-) 25.Re1 Qb7 (25...Bd3 26.Be7 Be7 27.Bg6 Kd7 28.Qd4 Kc7 29.Qg7+-) 26.Qd4 Qd7 (26...Qc8 27.Nc3+-) 27.Qa1 Bc8 28.ef5 Qd5 29.Ne6 (29.Re5 Qc4 30.fe6 Rh7 31.Nh7 Ng6 32.Nf8 Ne5 33.Qe5 Qd5+-) 29...Be6 30.Be7 (30.Re6?! Qc5 31.Re3 Rh7=) 30...Rh7 31.Bf8 Qf5 32.Bg7 Kf7 33.Be5 Qg4 (33...Bd5 34.Qa7 Kg8 35.Qf2+-) 34.Nc3 Qh4 35.Qa7 (35.h3 Bh3 36.Ne4 Be6 37.Ng5 Kg6 38.Nh7 Qh7+-) 35...Kg6 36.f5! Bf5 (36...Bf5 37.Qe3 Combination; 36...Kf5 37.Qe3 Combination) 37.Qe3 Rf7 (37...Re7 38.d4 Rf7 39.Rf1+-) 38.Rf1 Bc2 (38...Be6 39.Bf4 Bg4 40.Ne4+-) 39.Rc1 Bf5 40.Ne2 Bd7 (40...Kh7 41.Nf4 Rb7 42.Qa3+-) 41.Nf4 Kh7 (41...Rf4 42.Bf4 Qf6+-) 42.Ra1 Qg4 43.Ra8 Rf4 44.Rh8 Kg6 45.Bf4 Be6 46.h3 Qf5 (46...Qd1 47.Kf2 Qf1 48.Kf1 Bc4 49.d3 Bd3 50.Qd3 Kg7 51.Be5 Kf7 52.Qd6 c5 53.Rf8) 47.Qg3 Kf7 (47...Qg4 48.hg4 c5 49.Qd3 Kf6 50.g5 Ke7 51.Qd8 Kf7 52.Qf6) 48.Qg8 Kf6 49.Qf8 Bf7 50.Qd8 Kg7 51.Qd4 Qf6 52.Bh6 Kh8 53.Qf6 (53.Qf6 Kh7 54.Qg7) 1–0. GuestBRJM – GuestHHDB, freechess.org, 2020.

7.c4 dc4 8.Qa4 Nb5 9.Qb5 Qd7 10.Qc4 e6 (10...b5 11.Qb3 e6 12.Nf3+-) 11.e3 Bd6 (11...Nf6+-) 12.Bg7 b5 (12...Ne7 13.Bh8 f5 14.Nf3+-) 13.Qb5 Qb5 14.Bb5 Bd7 15.Bd7 Kd7 16.Bh8 f5 17.Nf3 1–0. DEFFM – GuestFVYJ, freechess.org, 2019.

7.c4 dc4 8.Qa4 Qd7 9.Qa7+- Qb5 10.Nc3 Qb4 11.Qb8 (11.Qb8 Kd8 12.Qc7 Kc7 13.Nd5 Kd6 14.Nb4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.c4 dc4 8.Qa4 Bf5 9.e4 Be4+-.

7.e3 b6 8.Nf3 Bd7 9.c4 dc4 10.Bc4 Nb5?? (better 10...e6 11.Qa4 Nc8+/-) 11.Bf7!+- Kf7 12.Ne5 Ke8 13.Qh5 g6 14.Ng6 Nf6 (14...Qa8 15.Bh8 Nd6 16.Ne5 Kd8+-) 15.Bf6 ef6 (15...Bg4 16.Qb5 Qd7 17.Qd7 Bd7 18.Ne7 Be7 19.Bh8+-) 16.Nh8 Ke7 17.Qh7 Kd6 (17...Bg7 18.Qg7 Ke6+-) 18.Nf7 (18.Nf7 Ke7 19.Nd8 Kd8 20.Nc3 Nc3 21.dc3+-) 1-0. DEFFM – SYEDASHRAFI, freechess.org, 2021.

7.e3 b6 8.Nf3 Bg4 9.Be2 Bf3 10.Bf3 e6 11.c4 Nf6 (11...dc4 12.Qa4 Double attack (12.Qa4 Decoy)) 12.0-0 (12.Bf6 Qf6 13.Qa4 Nc8+-) 12...Bc5 (better 12...dc4!? 13.Qa4 Nc8+-) 13.cd5+- ed5 (13...Nb5? 14.Qa4 Qd7 15.de6 fe6 16.Qa8 Qd8 17.Bc6 Ke7 18.Qd8 Rd8 19.Bb5+-) 14.Qa4 Qb8 (better 14...Nc8+-) 15.Bf6 gf6 16.Bd5 0-0 (16...Bd6 17.Qe4 Kf8 18.Qh4+-) 17.Nc3 Bd6 (17...Nc8 18.Qg4 Kh8 19.Ra1+-) 18.Ra1 Nc8 (18...c6 19.bc6 Nc8+-) 19.Qg4 Kh8 20.Ra8 Qa8 21.Ba8 Ne7 22.Be4 Rg8 (22...Re8 23.Qh5 Ng6 24.d4+-) 23.Qh4 Ng6 (23...Rg7 24.Qf6 Ng8 25.Qd8+-) 24.Qf6 Rg7 25.d4 Kg8 (25...Ne7 26.Nd5 Ng8 27.Qd8+-) 26.Qd8 Nf8 27.Nd5 h6 28.Nf6 Kh8 29.Ne8 Rg8 30.Qf6 (30.Qf6 Rg7 31.Qg7) 1–0. GuestKBJG – GuestWKRB, freechess.org, 2018.

7.e3 c6 8.c4 dc4 9.Bc4 Nb5 10.Nf3 Nd6 11.Bb3 e6 (11...Nf6 12.0-0=+) 12.0-0= Nf6 13.Nc3 g6 (better 13...Be7!?=+) 14.e4+= Bg7? (better 14...Nd7+=) 15.e5+- 1–0. Anonymous – Anonymous, lichess.org, 2020.

7.e3 Qd7 8.Nf3 Nb5?? (better 8...f6=) 9.Ne5+- Qd6 10.Bb5 c6 11.Be2 (11.Bd3 Nh6+-) 11...Nf6 (11...f6 12.Nf3+-) 12.0-0 e6 13.d4 Nd7 (13...b5 14.Bd3+-) 14.f4 Be7 15.c4 0-0 16.c5 Qc7 17.Qb3 (17.Bd3 Ne5 18.fe5 b6 19.cb6 Qb6+-) 17...Ne5 (17...b5 18.cb6! Nb6 19.Rc1+-) 18.fe5 (18.de5?! Bc5 19.Bd4 Bd4 20.ed4 c5+-) 18...Bd7 19.Nd2 Ra8 20.Bc3 Bg5 21.e4 Bd2 (21...Rb8 22.Ra1+-) 22.Bd2 de4 23.Qb1 Rb8 (23...h6 24.Qe4 Qd8 25.Bd3+-) 24.Qe4 b6 25.Bd3 g6 26.Qh4 bc5 (26...Be8 27.cb6 Qb6+-) 27.Qf6 (27.Rf7 h5 28.Qf6 Rb1 29.Bb1 Qe5 30.Qg6 Qg7 31.Qg7) 27...Qd8 (27...Be8 28.Bh6 Qe5 29.de5 Rb2 30.Qg7) 28.Qf7 Kh8 29.Bh6 Qg8 (29...Qf6 30.Qf6 Kg8 31.Qg7) 30.Qf6 (30.Qf6 Qg7 31.Qg7) 1–0. DEFFM – GuestLMGB, freechess.org, 2018.

7.e3 e6 8.c4 Be7?? 9.Bg7+- Bf6 10.Bh8 Bh8 11.Qa4 1–0. GuestXYPN – GuestYLDR, freechess.org, 2020.

7.e3 e6 8.Be5 Nf6+=.

7.e3 e6 8.Nf3 c6 (8...Bd7 9.Nc3+=) 9.c4 (9.Nc3 Nf6+=) 9...cb5 (better is 9...dc4!? 10.b6 Nb5=) 10.cd5+/- Qd5 (10...Nf6 11.Bd4 b6 12.Nc3 Nd5 13.Qa1+-) 11.Bd4 Nc6 12.Nc3 Qd7 (12...Qd8 13.Bb5 Bd7 14.0-0+/-) 13.Ne5 (13.Bb5 Nf6+-) 13...Ne5+/- 14.Be5 Qd8 15.Nb5 (better is 15.Bb5 Bd7 16.0-0+/-) 15...Bd7 (15...f6!? 16.Bg3 Bb4+/-) 16.Nc7 (16.Nd6 Ke7 17.Bc4 f6+-) 16...Ke7 17.Qb3 f6 18.Bg3 (18.Bf4 Qc8 19.Bc4 Nh6+-) 18...e5? (better is 18...Nh6+-) 19.Qb4 Kf7 20.Qc4 (20.Qb7?! Ne7 21.f4 Qc8 22.Qc8 Bc8 23.Bc4 Kg6 24.fe5 Nf5+-) 20...Ke7 21.f4 b5 22.Qc3 Kf7 23.fe5 Be7 (23...fe5 24.Bb5 Bb5 25.Nb5 Qd5 26.0-0 Nf6 27.Be5 Be7+-) 24.Bd3 Nh6 (24...fe5 25.0-0 Nf6 26.Qe5+-) 25.0-0 Rf8 (25...Qc8 26.Qb3 Kf8+-) 26.Qb3 Be6 27.Qe6 1–0. pierre – embie, internet, 2010.

7.e3 e6 8.Qg4 Nf6 9.Qa4 Bc5 10.Nf3 Bb6 11.Be2 0-0 12.0-0 c5 13.c4 h6 (13...Qe7 14.d4+=) 14.d3 e5 (better 14...Qe7!?+/-) 15.Be5+- dc4 16.dc4 Bg4 17.Rd1 Qe7? (17...Nd7+-) 18.Bd6 Qe6 19.Bf8 Kf8 20.h3 Bf3 (20...Bh5 21.Nc3+-) 21.Bf3 (21.gf3?! Qh3 22.Nd2 Qf5+-) 21...Ne4 (21...Qe7 22.Nc3+-) 22.Qc2 f5 23.Be4 fe4 24.Nd2 Bc7 25.Qe4 Qd6 (25...Qc8 26.Qd5 b6 27.Ne4+-) 26.Qb7 Qh2 (26...Qb6 27.Qd5 Qd6 28.Qd6 Bd6 29.Ne4+-) 27.Kf1 Qh1 (27...Nb5 28.Nf3 Qh1 29.Ng1 Nd4 30.Qc8 Kf7 31.Qc7 Kg6 32.ed4 Qg1 33.Kg1 h5 34.dc5 Kh7 35.Qf7 Kh6 36.Rd6 Kh7 37.Qh5 Kg8 38.Rd8) 28.Ke2 Qh2 29.Nf3 Qg2 30.Qc7 Nb5 (30...Kg8 31.Rd8 Kh7 32.Qf7 Nc6 33.Qg8 Kg6 34.Rd6 Kh5 35.Rd5 Kg6 36.Nh4 Kf6 37.Rd6 Kg5 38.Qg7 Kh4 39.Qh6) 31.Rd8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.e3 Nf6 8.c4 e6?? (better is 8...dc4 9.Bc4 Bd7=) 9.Qa4+- dc4 10.Qa7 Bd6 (10...Ne4 11.Bc4 Qh4 12.g3 Ng3 13.Qb8+- (13.hg3?! Qh1 14.Kf1 Rg8=)) 11.Bc4 0-0 12.Bf6 (12.Nf3 Nd5+-) 12...Qf6 13.Nf3 b6 (13...e5 14.Nc3+-) 14.Nc3 (14.d4 Rd8+-) 14...h6 (14...Rd8 15.d4+-) 15.Ne4 Qd8 16.Nd4 (16.0-0 Bb4+-) 16...Bd7 17.Nd6 cd6 18.Nc6 Bc6 19.bc6 d5 (19...Qg5 20.0-0 Qc5 21.Qa4+-) 20.Bb5 Qd6 21.0-0 Qc5 22.Rb1 Qc2 23.Qa1 Qc5 24.Qc3 (24.d4 Qe7+-) 24...Rc8 25.Qc5 bc5 26.h3 (26.d3 e5+-) 26...Kf8 27.d3 Ke7 28.Ra1 (28.Kf1 e5+-) 28...Kd6 29.Ra7 Rc7 30.Rc7 Kc7 31.Kf1 f5 (31...e5 32.e4 d4 33.Ke2+-) 32.f3 (32.f4 g6+-) 32...g5 (32...e5 33.e4 de4 34.de4 fe4 35.fe4+-) 33.Kf2 (33.f4 g4+-) 33...h5 (33...f4 34.g3 e5 35.gf4 gf4 36.ef4 ef4 37.Ke2+-) 34.f4 g4 (34...gf4 35.ef4 d4 36.Kg3+-) 35.hg4 (35.Kg3 gh3 36.gh3 Kd6+-) 35...fg4 (35...hg4 36.Kg3+-) 36.Kg3 c4 (36...Kc8 37.Kh4 Kc7 38.Kh5+-) 37.dc4 dc4 38.Bc4 Kc6 (38...e5 39.Bd5 ef4 40.ef4+-) 1–0. Turudic,M – Jansa,Andrej, Pokljuka op, 1991.

7.e3 Nf6 8.Bd4 b6 9.Nf3 (9.Nc3 Bg4 10.Be2 Be2 11.Nge2 e6+=) 9...Bd7 (9...Bg4 10.Nc3+=) 10.Nc3 h6 (10...e6 11.Qa1 Nc8 12.Be2+=) 11.Bd3 (11.Qa1 Qb8+-) 11...e6+= 12.Qa1 Qb8 (12...Nc8 13.0-0+-) 13.Ne5 (13.Bf6 gf6 14.e4 Rg8+-) 13...Bd6 14.Nd7 Kd7 15.f4 Rc8 (15...Qb7 16.0-0+-) 16.0-0 Ke7 (16...Ke8 17.Qa6 c5 18.bc6 Nc6 19.Rb1 Nd4 20.Rb6+-) 17.Na4 (17.e4 de4 18.Ne4 Ne4 19.Be4+-) 17...Kf8 (better 17...Qb7!?+-) 18.Bf6+- gf6 19.Qf6 Be7?? (19...c6+-) 20.Qh8 1–0. GuestKNKP – GuestMKKS, freechess.org, 2018.

8.Nc3 e6 9.Nf3 Nf6 10.Bd3 Bd6 (10...c5 11.bc6 Nc6 12.0-0=) 11.e4 (11.Qe2!?+=) 11...de4= 12.Ne4 0-0?? (better 12...Ne4 13.Be4 Bb5=) 13.Bf6 (13.Nd6?! cd6 14.Qb1 e5+=) 13...gf6 14.Qa1 e5 15.Qa7 (worse 15.Nd6 cd6 16.Qa7 Qa8 17.Qa8 Ra8+-) 15...Qe7 (15...f5 16.Nd6 cd6 17.Be2+- (worse 17.Qb7 e4 18.0-0 ed3 19.cd3 Qc8 20.Qc8 Rc8+-)) 16.Nd6 Qd6 (16...cd6 17.0-0 f5 18.Be2+-) 17.Qb7 f5 18.Be2 e4 19.Nh4 (19.Ng5 h6 20.Nh3 Rd8+-) 19...Rd8 (19...f4 20.0-0 Qd2 21.Qc7+- (21.Qe4?! Re8 22.Qa4 Qe2+=)) 20.0-0 Be6 (20...Bc8 21.Qa7 Qb6 22.Qb6 cb6 23.Rd1+-) 21.d4! ed3 (21...Qd4 22.Qc7 Deflection) 22.Bd3 Qe5 (22...Qf4 23.g3 Qe5 24.Qc6+-) 23.Qc6 Bd5 (23...Bd7 24.Qh6 Qg7 25.Qe3+-) 24.Qh6 Rd6 (24...Qg7 25.Qg7 Kg7 26.Nf5 Kf6 27.Ne3+-) 25.Qg5 Kh8 26.g3 h6 (26...Rd7 27.Qf5 Qf5 28.Nf5+-) 27.Qf5 Qf5 28.Nf5 Rf6 (28...Re6 29.Ra1 Be4 30.Be4 Re4 31.Ra6+-) 29.Ra1 h5 (29...Re6 30.f3! c5 31.Kf2+-) 30.Ne3 (30.Ra7!? Re6 31.Kf1 Be4 32.Be4 Re4 33.Rc7 Rb4+-) 30...Be6 (30...Bb7 31.Ra7 Rb6 32.Bf1+-) 31.Ra7 1–0. DEFFM – GuestVWJM, freechess.org, 2019.

8.Nc3 Nf6 9.Nf3 e6 10.Ne5 Bb4 11.b6 cb6=+ 12.Bd3 Bc3 (12...0-0!?=+) 13.Bc3+= Nc6 (13...Bb5 14.h4+=) 14.Nd7 (14.0-0 0-0+-) 14...Qd7+= 15.Bf6 (better 15.Qa1!?+=) 15...gf6= 16.Qg4 Ne5 (better 16...Ke7!?=) 17.Qg7+- Nd3 18.cd3 Rf8 19.0-0 (19.Qf6 Qe7 20.Qf4 f6+-) 19...h5 (better 19...Ke7!?=) 20.Qf6+- Qb5 21.Qc3 (21.Rc1 Kd7+-) 21...Qd7 (21...Ke7 22.Rc1 Qc5 23.Qb2+-) 22.Ra1 (22.Qb4 f6+-) 22...Ke7 (22...Qc6 23.Qb4 f6 24.Qh4+-) 23.Qb4 Qd6 24.Qh4 Kd7 25.h3 (25.Qh5 b5+-) 25...Rh8 26.Qf6 Rf8 27.d4 Kc6 (27...b5 28.Qh6+-) 28.d3 Qb4 (28...b5 29.Qh6+-) 29.e4 Qc3?? (better 29...Qd6+-) 30.ed5+- Kb5 (30...Kd6 31.Qf4 e5 32.Qe5 Kd7 33.Qf5 Ke7 34.d6 Kd6 35.Qf4 Ke6+-) 31.Rb1 Ka4 32.de6 Qd3 (32...b5 33.e7 Rc8+-) 33.Ra1 Kb3 34.e7 (34.e7 Ra8 35.Qb6 Kc2 36.Ra8 Qc4 37.e8Q Kd3 38.Qb1 Kd4 39.Qe3 Kd5 40.Rd8 Kc6 41.Qbb6) 1–0. Trkn – guest280, ICC, 2004.

8.Nf3 Nb5=+ 9.Be2 e6 10.0-0 Nf6 11.Ne5 c6 12.Bb5 cb5 13.Nd7 Qd7 14.Bf6 gf6 15.Nc3 Bd6 16.Qg4 (16.Qe2 b4 17.Ra1 0-0= (worse 17...bc3 18.Ra8 Qd8 19.Rd8 Kd8 20.dc3+-)) 16...Bc7 (16...Ke7!? 17.Rc1 Rc8=+) 17.Qg7+= Rf8 18.Rb1 The isolani on b5 becomes a target 18...Qd6 (18...b4!? 19.Na2 b3 20.cb3 f5+=) 19.Qh7+- b4 20.Nb5 Qc6 21.Nc7 Qc7 22.Rb4 Ke7 23.c3 Qb8?? (better 23...Ra8+-) 24.Qb1+- (24.Qb1 f5 25.Rb7 Qb7 26.Qb7 Kf6 27.d3+-) 1–0. onur604 (2320) – Nepo2775 (2105), lichess.org, 2020.

9.c4 e6 (9...dc4 10.Bc4 e6 11.d4=+) 10.cd5= ed5 11.Nf3 Nf6 (11...Nc6 12.Qb3=) 12.Qb3 (12.Bf6 Qf6 13.Nc3 Bd6=) 12...Be7 13.Bd4 The isolani on b6 becomes a target 13...Bc5 14.Bf6 Qf6 15.d4 Be7 (15...Bd6!?=) 16.Nc3+= 0-0 (16...Bc6 17.Nd5 Qf5 18.Bc4+=) 17.Nd5+- Qe6 18.Ne7 Qe7 19.Bd3 b5 20.0-0 Bc6 (20...b4!?+-) 21.d5+- Bd7 22.e4 h6 23.Ra1 Qc5 (23...Nc8 24.Rc1 Bg4 25.Nd4+- (25.Qb5 Bf3 26.Rc8 Rc8 27.gf3 Qg5 28.Kf1 Qd2–+)) 24.Qb2 Nc8 25.Ne5 Be8?? (better 25...Nb6+-) 26.Rc1 (26.Rc1 Qe7 27.Rc8+-) 1–0. DEFFM – ejbelen, freechess.org, 2019.

9.Nf3 e6 10.c4 dc4 11.Bc4 Nf6 12.0-0=.

9.Nf3 e6 10.c4 Bc6 11.Qc2 Nf6 (11...dc4 12.Bc4 Bf3 13.gf3=) 12.Be2 (12.Bf6 gf6 13.cd5 Qd5= (13...Bd5? 14.Qa4 Nc6 15.e4+-)) 12...Be7 (12...dc4 13.Qc4 b5 14.Qh4=+) 13.0-0 (13.Bf6 Bf6 14.cd5 Qd5=) 13...0-0 (13...dc4 14.Qa2 (14.Qc4? Bb5 15.Qb5 Nb5 16.Bb5 Kf8-+) 14...Qb8 15.Be5=+) 14.h3 (better 14.Bf6!? Bf6 15.cd5 Qd5 16.Nc3 Bc3 17.dc3=) 14...dc4-/+ 15.Qc4? (15.Qa2 Qa8 16.Bd4-/+) 15...b5?? (better 15...Bb5 16.Qb5 Nb5 17.Bb5 Ne4-+) 16.Qa2 Qa8 17.Qc2 (17.Bf6 Bf6 18.d4 Be7=) 17...b4 18.Ng5 h6?? (better 18...g6=+) 19.Bf6+- hg5 20.Be7 Rc8 21.Qb2 b5 (21...b6 22.f3 Bb5 23.Bb5 Nb5 24.Bb4+-) 22.f3 Bd7 23.Bb4 Nc6 (23...Qc6 24.Na3+-) 24.Bc3 f6 25.Qb5 Qb8 26.Qb8 Rb8 27.Na3 Ne7 28.Rb1 (28.Rb1 Rb1 29.Nb1+-) 1-0. FERNANDO_2013 (1900) - Vladim40 (1970), Rated Classical game, lichess.org, 2018.

9.Nf3 e6 10.c4 Bc6 11.cd5 Bd5?? (better 11...Qd5 12.Be2 Nb5=) 12.Qa4+- Nc6 13.e4 Be4 14.Qe4 Qd5 15.Qd5 ed5 16.Bb5 f6 17.Nc3 Nge7 18.0-0 Kf7 19.Rb1 Nc8? (19...g5+-) 20.Nd5 Bc5 (20...Nd6 21.Ba4+-) 21.d4 Nd4 (21...Be7+-) 22.Nd4 Nd6 23.Bf1 (23.Bd3 Ra8 24.Nc2 h6+-) 23...Rd8 (23...Ra8 24.Nb3+-) 24.Nb6 Ne4 25.Bc4 Kg6 26.Nd5 Nd2 (26...Kh6 27.Rb3 Re8 28.Rh3 Kg5 29.f4 Kg6 30.f5 Kg5 31.Rh7+-) 27.Nf4 (27.Bd3 Kh6 28.Nf5 Kg5 29.Rb7 Ne4 30.Be4 Rd5 31.Rg7 Kf4 32.Bd5 Kf5 33.g4 Kf4 34.Bf6 h6+-) 27...Kh6 28.Nf5 Kg5 29.Ng7 Nb1 (29...Kf4 30.Ne6 Kf5 31.Nd8 Nc4 32.Nb7+-) 30.Nge6 Kf5 31.Nd8 (31.Nc5 Rd1 32.Bf1 Nd2-/+) 31...Kf4 (31...Bf2 32.Kf2 Kf4 33.Bd3 Nd2 34.Ne6 Kg4 35.h3 Kh4 36.Bf6 Kh5 37.g4 Kh6 38.Bg7) 32.Ne6 Kf5 33.Nc5 Nd2 1–0. GuestPHTQ – GuestZSKV, freechess.org, 2019.

9.Nf3 e6 10.Be2 Nf6 11.Ne5 (11.0-0 Bd6=) 11...Bc6 12.0-0 Bd6 13.f4 0-0 1–0. GuestSSGD – GuestVTKT, freechess.org, 2018.

9.Nf3 e6 10.Ne5=.

9.Nf3 Nf6 10.Bd3 (10.Bf6 ef6 11.Nc3 Be6=) 10...Bc6 11.Bd4 e6 12.0-0 Be7 (12...Nb5 13.Be5=) 13.Nc3 0-0 14.Ne5 (14.Qe2 Ne4=) 14...Bd6 15.Qf3 Be5 (15...Qc7!? 16.Qf4 Bd7=) 16.Be5+= Nc8 17.Qh3 h6 18.Qg3 b5 (18...Nh5 19.Qg4 Nf6 20.Qd4+=) 19.Nb5 Bb5 20.Bb5 Na7 21.Bd3 h5 (better 21...Nc6!? 22.Bc3 Qe7+=) 22.Ra1 Nc6 (better 22...Nc8!?+-) 23.Ra8!!+- Qe7 (23...Qa8 24.Bf6 Combination) 24.Rf8 Kf8 (24...Qf8 25.Bf6 Nb8+-) 25.Bd6 Qd6 (25...Ne8 26.Be7 Ke7 27.Qg5 Kf8 28.Qh5+-) 26.Qd6 (26.Qd6 Ke8 27.Qc7+-) 1–0. GuestGHCZ – GuestNSXR, freechess.org, 2019.

9.Nf3 h6 10.Ne5 Bc6?? (better 10...Nf6=) 11.Qh5+- g6 12.Ng6 fg6 (12...Rh7 13.Nf8 Kf8 14.Qf5+-) 13.Qg6 Kd7 14.Bh8 Nf6 15.Be2 (better 15.Bd3 Qe8+-) 15...Ne4 (15...Nb5 16.0-0+-) 16.Bg4 Kc7 17.Be5 Nd6 18.Qg8 Nab5 19.0-0 (better 19.Be6+-) 19...Kb8 (19...Qe8+-) 20.Bg7 Ka7 (20...Kc7 21.Qf8 Qf8 22.Bf8+-) 21.Qf8 Qc7 (21...Qf8 22.Bf8 Kb8 23.Be7+-) 22.Nc3 Nc3 23.Ra1 (better 23.Bc3 Bb5 24.Ra1 Ba6+-) 23...Na4 24.Bh6 Nc4 (24...e5 25.Bg7 Ne8 26.Bh8+-) 25.d3 Ne5 26.Bf4 (better 26.Qf4 Kb8 27.Be6+-) 26...Bd7 (26...Ng6 27.Bc7 Nf8+-) 27.Qe7 b5 (27...Qc2 28.Bd7 Nc6+-) 28.Be5 (28.Be5 Qe5 29.Qe5 Bg4 30.Qd5+-) 1–0. DEFFM – GuestYLMV, freechess.org, 2018.

9.Bc4 Bb5 10.Bb5 Nb5 11.Qa4 c6 12.Nf3 e6 13.0-0 Nf6 14.Bf6= Qf6 (better 14...gf6!? 15.Nc3 Nd6=) 15.Qa8+- Qd8 16.Qb7 Qd7 (16...Qc7!? 17.Qa8 Kd7+=) 17.Qa8+- Ke7 18.Ne5 Nc7 (18...Qc7 19.d4 f6 20.Nc6 Kd7 21.Nb8 Ke7 22.Na6+-) 19.Nc6 (better 19.Qb7 Qd6 20.Nc6 Kf6 21.Nc3+-) 19...Kf6?? (better 19...Kd6 20.Qa3 Kc6 21.Qa4 Nb5 22.Rc1 Kb6+-) 20.Qa1 Kg5 21.f4 Kh6 22.Ne5 Qe7 (22...Qb5 23.Rf3 g5 24.Nf7 Kh5 25.Rh3 Kg6 26.Nh8 Kf5 27.Nc3+-) 23.Rf3 f6 (23...g5 24.Nf7! Qf7 25.fg5 Kg6 26.Rf7 Kf7 27.Qh8 Bg7 28.Qh7 Kf8+-) 24.Rh3 1–0. DEFFM – GuestAdnenBM, freechess.org, 2018.

9.Bc4 Bb5 10.Bb5 Nb5 11.Nf3 e6 12.0-0 c6 13.Qa4 Ne7 (13...Nd6 14.Qb3=+) 14.Nc3 Nc3 (14...Nd6 15.d3=+) 15.Bc3 Nd5 (15...b5 16.Qc2=+) 16.Qa7 (16.Ra1 f6=) 16...Qc8 17.Rb1 Nc3 (17...b5 18.Be5=) 18.dc3 b5 (better 18...Bd6=) 19.Ne5+- Be7 20.Rd1 f6 (20...g6 21.Nc6! Bf6 22.Qc5+-) 21.Rd7 (better 21.Nc6 Qc6 22.Qb8 Kf7 23.Qh8+-) 21...Bd6?? (better 21...Bf8 22.h3 fe5+-) 22.Rd8!! Kd8 (22...Qd8 23.Qf7; 22...Kd8 23.Nf7 Double attack) 23.Nf7 Ke8 24.Nd6 Kd8 25.Nc8 Kc8 26.Qa8 Kc7 27.Qh8 1–0. DEFFM – GuestGWJB, freechess.org, 2018.

9.Bc4 Nb5 10.Nf3 Nd6 11.Bb3 Nf6 12.0-0 g6 (12...e6 13.Be5=+) 13.Nc3 Bg7 (13...c5 14.e4 Nc8 15.e5+-) 14.e4= Nde4? (better 14...Ng4=) 15.Ne4+- 0-0 16.Neg5 b5 (16...e6 17.Ne5+-) 17.Ne5 e6 18.Qf3 Be8 19.Qc3 Nd5? (19...Nh5 20.Qe3 Nf6 21.Rc1+-) 20.Nef7 Rf7 (20...Nc3 21.Nd8 Ne2 22.Kh1 Ba1 23.Nde6 Bb2 24.Nf8 Kf8 25.Ne6 Ke7+-) 21.Nf7 Bc3 (21...Nc3 22.Nd8 Ne2 23.Kh1 Ba1 24.Ra1+-) 22.Nd8 Ba1 (22...Bd2 23.Rd1 Bh6 24.Ne6+-) 23.Ra1 c5 (23...Bd7 24.Ra6 Kf8 25.Ne6 Be6 26.Re6+-) 24.Bd5 ed5 25.Ra8 Kf8 (25...c4 26.Nb7 Kf7 27.Nd6 Ke7 28.Ne8+-) 26.Ra7 h5 (26...b4 27.Ne6 Kg8 28.Rg7 Kh8 29.Re7+-) 27.Ne6 Kg8 28.Rg7 Kh8 29.Re7 Bc6 30.Rc7 b4 31.Rc6 c4 32.Nc7 1–0. DEFFM – GuestJFMH, freechess.org, 2018.

9.Bc4 e6 10.Qa4 (10.Qe2=) 10...Qa8 (better 10...Nc8!? 11.Be2 Nf6=) 11.Nf3+- b6 12.0-0 f6 (12...c6 13.Nc3+-) 13.Nd4 (13.Nc3 c5+-) 13...Ne7 (better 13...e5!? 14.Ne6 Be6 15.Be6 Bd6+-) 14.Ne6 (14.Ne6 Qb8 15.Nc3+-) 1–0. Anonymous – Anonymous, lichess.org, 2020.

9.Nf3 Nb5 10.Bc4 Nd6 11.Ba2 e6-/+ 12.0-0 Nf6 13.Nc3 (13.d3 Be7=+) 13...Nb5 (13...Be7 14.d3-/+) 14.Qb3=+ Nc3 15.Bc3 b6 (15...b5 16.d3=+) 16.Ne5 Be7 (16...Ne4 17.Ra1=) 17.Ra1 0-0 18.Bb1 g6 (18...Nd5 19.Be4=+) 19.e4 (19.d4 Bd6=) 19...Bd6 (19...c5 20.Ra7=) 20.Qb2 (20.d4 Nh5=) 20...Be7 (20...Nh5 21.Nd7 Qd7 22.e5=+) 21.f3 (21.d4 c5=) 21...c5 (21...Nh5 22.d4=) 22.Ra6 (better 22.Bd3!?+=) 22...b5=+ 23.Ba5 Qc8 (23...Qe8 24.Ra7=+) 24.Ra7 b4 25.Bb6 Bd6 (25...Re8 A) 26.Nd7? Nd7 27.Rc7 Qd8–+ (27...Nb6?! 28.Rc8 Rc8 29.Kf2-/+); B) 26.Nc4 Qb8 27.Ba2=) 26.Nc4 Bb8? (26...Qb8 27.e5 Nd5 28.Nd6 Nb6=) 27.Ra1?? (better 27.Ra5!? e5 28.Rc5+-) 27...Nh5 (27...Bb5!? 28.Qf6 Bc4-/+) 28.Ra5= Attacks the backward pawn on c5 28...Nf4? (28...Bc7!? 29.d4 cd4=) 29.Rc5 (29.g3 Ne2 30.Kg2 e5 31.Rc5 Qb7+-) 29...Qb7 (29...Qa6 30.Qb4 Bd6 31.d4 (31.Nd6?? Qe2 32.Nf7 Qg2) 31...Bc5 32.dc5= (32.Qc5?? Rc8 33.Bc7 Qa1–+)) 30.g3 Nh5 (30...Ba7 31.Ba7 (31.gf4?! Bb6 32.Nb6 Qb6=; 31.Qb4?! Rb8 32.gf4 Bb6 33.Qb6 Qb6 34.Nb6 Rb6+-) 31...Qa7 32.d4+= (32.Qb4 Rb8 33.Qb8 Qb8 34.gf4 Qb1 35.Kg2 Bb5–+)) 31.d4 (31.Qb4 Ba7 32.Qa5 Bb6 33.Qb6 Qb6 34.Nb6 Rb8 35.Nd7 Rb1 36.Kf2 Rh1+-) 31...Bd6 32.Ra5 Bc7?? (better 32...Qc6 33.Bd3 Be7+-) 33.Ra7+- (33.Ra7 Qb8 34.Rc7+-; 33.Qb4 Rb8-/+) 1–0. DEFFM – GuestDSFZ, freechess.org, 2018.

7.c3 Na2 8.Qc2 Nc3 9.Nc3 (worse 9.dc3 Nf6+-) 9...e6 (9...e5 10.Nf3 e4 11.Nd4+-) 10.Nf3 b6 (10...Nf6 11.g3+-) 11.e3 Bb4 (11...Nf6 12.d4+-) 12.Na2 (better 12.Nd5 ed5 13.Bg7 Nf6 14.Bh8 Ne4+-) 12...Bf8 13.Bd3 Nf6 14.0-0 Bc5 (14...Bb7 15.Bd4+-) 15.Bh7! Rh7 (15...Nh7 16.Bg7 Decoy; 15...Rh7 16.Bf6 Decoy) 16.Bf6 Qf6 (16...gf6 17.Qh7 Qd7 18.Nc3+-) 17.Qh7 Ke7 (17...Bf8 18.Qg8 Qe7 19.Nc3+-) 18.Qg8 Bd7 19.Nc3 d4 (19...Bb4 20.Rc1 Be8 21.h3+-) 20.ed4 Bd4 21.Ne4 Qg6 (21...Qf4 22.Nd4 Qe5 23.Rc1 Qd4 24.Ng5+-) 22.Nd4 Qe4 23.Qg7 e5 (23...c5 24.bc6! Bc6 25.d3+-) 24.Nf3 Qb4 (24...Qg6 25.Qe5 Kf8 26.Qh8 Qg8 27.Qf6+-) 25.Ne5 Qb5 26.Re1 Kd6 27.Nf7 Kc6 28.Nd8 Kc5 (28...Kd5 29.Qe5 Kc4 30.Qc3 Kd5 31.Re5 Kd6 32.Nf7) 29.Qe5 Kc4 30.Qc3 Kd5 31.Re5 Kd6 32.Nf7 1–0. DEFFM – GuestQRKV, freechess.org, 2018.

7.c3 Na2 8.Qc2 Qd7 9.Qa2 Qb5 (9...e5 10.c4 d4 11.Nf3+-) 10.e3 Qb6 (10...Qd7 11.Nf3+-) 11.c4 e6 (11...Nf6 12.Nc3 e6 13.cd5+-) 12.cd5 Nf6 (12...ed5 13.Bd3+-) 13.de6 Be6 (13...fe6 14.Nf3+-) 14.Qa8 Ke7 (14...Kd7 15.Bd3+-) 15.Nc3 Qb1 (15...c5+-) 16.Nb1 Ne4 17.Qb7 f6 18.Qb4 (better 18.Qc7 Bd7 19.Bb5 Nc5 20.Qc5 Kf7+-) 18...Nd6 19.Nf3 1–0. GuestGVBM – GuestVGDH, freechess.org, 2020.

7.c3 Na2 8.Qc2 Bd7 9.Qa2 Bb5 10.Nf3+-.

7.c3 Na2 8.Qc2 Be6 9.Qa2 d4 (9...Nf6 10.c4!+-) 10.c4 (10.Qa7 dc3 11.Nc3 Nf6+-) 10...c6 (10...Bf5 11.Nf3 e5 12.Ne5+-) 11.Nf3 cb5 12.e3 (12.Bd4 Bc4 13.Qa7 f6+-) 12...d3 (12...de3 13.fe3 Nf6 14.Nc3 Bc4 15.Bc4 bc4 16.0-0+-) 13.Ne5 (better 13.Qa7 bc4 14.Ne5 Nf6 15.Qb7 Qc8 16.Qc8 Bc8 17.Nc4 Nd5+-) 13...bc4 (13...f6 14.Nd3 Bc4+-) 14.Qa4 Bd7 15.Nd7 Qd7 16.Qc4 (16.Qa8 Qd8 17.Qb7 f5 18.Qc6 Kf7 19.Qc4 e6 20.Bd3 Nh6+-) 16...e6 17.Bd3 Nf6 18.0-0 (18.Qb3 Bb4+-) 18...Be7 19.Qb5 Qb5 (19...0-0 20.Bd4+-) 20.Bb5 Kd8 1–0. GuestXGVV – GuestVYPH, freechess.org, 2019.

7.c3 c5 8.cb4 cb4 9.e3 Qa5 (9...Bf5 10.Nf3 Qa5 11.Bd4 f6 12.Nh4+-) 10.Qc2 (10.Bd4 Nh6 11.Bd3 Bf5 12.Be2+-) 10...Bd7 11.Be5 (11.Bd4 e6 (11...f6+- 12.f4+-) 12.f4+-) 11...f6 12.Bc7 g6 (12...Bf5 13.Qf5 Qc7 14.Qh5 g6+-) 13.Ba5 1–0. pierred – tableofone@wuchess.com, internet, 2008.

7.c3 c5 8.cb4 c4 9.d3 cd3 10.e3 Bf5 11.Nf3 e6 12.Bc3+-.

7.c3 e5 8.cb4 Bd6 9.Nf3+- f6 10.Qb3 Ne7 11.d4 e4 12.Nfd2+-.

4.Nf3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Na7 8.Nd4 e5 9.Nf3 e4 10.Nd4 Nf6 11.e3 Bc5 (11...Bd6 12.d3+-) 12.Nb3+- Bb6 13.Bc4 0-0 14.0-0 Bg4? (better 14...Bd7!? 15.f3 ef3 16.Qf3 Nb5+-) 15.Bf6+- Qf6?? (better 15...Bd1 16.Bd8 Bc2+-) 16.Qg4 Re8 (16...Qe5 17.Nc3+-) 17.f3 ef3 (17...Rf8 18.fe4 Qe7 19.Qf5+-) 18.Rf3 Qe7 19.Rf7 (19.Rf7 Qf7 20.Bf7 Kf7 21.c4+-) 1–0. GuestRVNG – Guestzidan, freechess.org, 2018.

4.Nf3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nb4 8.Bd4 Bf5 9.d3 Qa8 (9...Bg4!? 10.c3 Bf3 11.gf3 Nd5+-) 10.c3+- Na2 11.e4 Be6 (11...Bg4 12.Be2+-) 12.b6 (12.Be2 Bd7+-) 12...Qa4?? (better 12...cb6 13.Be2 Qa5+-) 13.Qa4 (13.Qa4 Kd8 14.Qa8 Bc8 15.bc7 Kd7 16.Qa4 Kc7 17.Qa5 b6 18.Qb6 Kd7 19.Ne5 Ke8 20.Qc6 Kd8 21.Nf7) 1–0. GuestKWSC – egoy, freechess.org, 2020.

4.Nf3 e5 5.b5 (5.Ne5 Bb4 6.c3 dc3 7.Nc3=) 5...e4 (5...f6!?=+) 6.Nd4+= Bc5 (6...Nf6 7.e3+=) 7.Nb3 Bb6?? (better 7...Bf8+-) 8.Bg7+- Qh4 (8...ab5 9.a5 Ra5 10.Na5+-) 9.g3 Qg4 (9...Qh5 10.Bh8 ab5 11.Nc3 ba4 12.Na4+-) 10.Bh8 Qf5 11.e3 ab5 (11...Nf6 12.Nc3 Nd5 13.Nd5 Qd5 14.Bg2+-) 12.ab5 Ra1 13.Ba1 Qg5 (13...Nf6 14.Bf6 Qf6 15.Nc3+-) 14.Nc3 (14.Bg2 Bg4 15.f3 Bh5+-) 14...Bg4 15.Be2 Bf3 (15...Be2 16.Qe2 Nf6 17.Na4+-) 16.Bf3 (16.Bf3 ef3 17.Qf3+-) 1–0. GuestRSDT – GuesttAdnenBM, freechess.org, 2018.

4.Nf3 e6 5.b5+= Bc5 (better 5...ab5!? 6.ab5 Ra1 7.Ba1 c5+=) 6.e3+- Nf6 7.ed4 Be7 8.Bc4 (8.Nc3 0-0+-) 8...ab5+- 9.ab5 Ra1 10.Ba1 0-0 11.0-0 Nbd7 12.Bb2 c6 13.Nc3 Nb6 14.Bd3 Bb4 (14...Nbd5!?+-) 15.Re1 Bc3 (15...c5 16.Na2+-) 16.dc3 (16.Bc3 Nbd5+-) 16...cb5 17.Ba3 Re8 18.Bb5 Bd7 19.Bd3 Qc7 20.Ne5 Qc3 21.Re3 Qc7 (21...Qa3?? 22.Bh7! Nh7 23.Ra3+-) 22.Rg3 (better 22.Rf3 Qd8 23.Bc5+-) 22...Nbd5?? (better 22...Bc6+-) 23.Qf3+- g6 24.c4 Qa5 (24...Ra8 25.Bf1 (25.cd5 Ra3 26.Qf6 Ra1 27.Bf1 Rf1 28.Kf1 Bb5 29.Rd3 Bd3 30.Nd3 Qc4 31.Qd8 Kg7+-) 25...Be8 26.cd5 Nd5 27.Bc4+-) 25.Bf1 (worse 25.cd5 Qe1 26.Bf1 Kg7+-) 25...Bc6 (25...Bb5 26.h4 Qe1 27.cb5 Qd2+-) 26.cd5 Bd5 (26...Kg7 27.dc6 Qc7 28.cb7 Rb8+-) 27.Qf6 (27.Qf6 Qc7 28.Bd6 b5 29.Bc7 Rf8 30.Bd6 Bc6 31.Bf8 Kf8 32.Qf7) 1–0. DEFFM – GuestBHVQ, freechess.org, 2019.

4.Nf3 f6 5.Nd4 Bg4 6.h3 Bh5 7.Ne6 Qd6 8.Nf8 Kf8 9.c3 Nd7 10.d4 e6 11.Qc2 Ne7 12.e4 e5 13.Nd2 c6 14.Bd3 g5 15.0-0 ed4 16.cd4 g4 17.Be2 Rg8 18.Nc4 Qc7 19.h4 Nb6 20.Qd2 Rg6 21.Ne3 Rd8 22.Rfc1 Rd7 23.Qd1 Rd6 24.Ng4 Bg4 25.Bg4 Nd7 26.Qe2 Nb6 27.g3 Rg7 28.Bh3 Nd7 29.e5 fe5 30.de5 Rdg6 31.e6 Rg3 32.fg3 Rg3 33.Bg2 Ng6 34.ed7 Qd7 35.Qf2 Kg8 36.Qg3 b5 37.h5 Qa7 38.Rc5 Kf8 39.hg6 hg6 40.Qd6 Qe7 41.Rf1 Kg8 42.Qg6 Qg7 43.Qg7 1–0. katchum (2485) – valerypavlovich (2165), net–chess.com, 2004.

4.e3 c6 5.Nf3 e6 6.b5 cb5 (6...Nf6 7.Be2=) 7.ab5+= a5 8.Be2 Be7?? (better 8...Nf6+=) 9.Bg7+- (9.Bg7 Bf6 10.Bh8 Bh8 11.d4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 c6 5.Nf3 f6 6.c4 e5 (6...e6 7.a5+-) 7.b5 (better 7.Nc3+-) 7...c5?? (7...ab5!? 8.cd5 cd5 9.Bb5 Bb5 10.ab5 Ra1 11.Ba1 Bd6+=) 8.Nc3 (better 8.cd5 Bd6 9.Nc3+-) 8...d4+- 9.ed4 (9.Nd5 Be6 10.Bd3 ab5 11.ab5 Ra1 12.Qa1 Bd5 13.cd5 Qd5+-) 9...cd4 10.Ne4 Nh6 11.Bd3 Nf7 (11...f5!? 12.Ne5 Qe7+-) 12.0-0 Bd6 (12...Be7!?+-) 13.Nd6 Nd6 14.Qc2 h6? (14...Qc8 15.Ba3 Nf5+-) 15.Bg6 (15.c5 Nf7 16.Nh4 0-0+-) 15...Nf7 16.Ba3 Be6 17.Qe4 Qd7 18.Nd4! ed4 (18...Qd4 19.Bf7 Double attack; 18...ed4 19.Rae1 Combination) 19.Rfe1 Kd8 20.Qe6 Qe6 21.Re6 Ng5 (21...Ne5 22.Be7 Kc7 23.b6 Kd7+-) 22.Rd6 Kc7 23.b6 Kc8 24.Bf5 Nd7 25.Rd7 Re8 (25...Nf3 26.gf3 Kb8 27.Bd6 Kc8 28.Rc7 Kd8 29.Be7 Ke8 30.Bg6) 26.Rd4 Kb8 (26...Ne6 27.Re1 g6 28.Be6 Re6 29.Re6 g5 30.Re8) 27.Bd6 1–0. DEFFM – GuestFJFD, freechess.org, 2019.

4.e3 c6 5.Nf3 Nf6 6.c4 (6.Be2 e6 7.b5 Bd6=) 6...e6 7.b5 (7.Bc3 dc4 8.Bc4 Nd5=) 7...ab5 8.ab5 Ra1 9.Ba1 Bb4 (9...dc4 10.bc6 Bc6 11.Bc4=+) 10.Qb3= Qa5 (10...Be7 11.Bf6 Bf6 12.d4=) 11.cd5 (11.Bf6 gf6 12.Qb2 Be7=) 11...cd5 12.Bc3 Bc3 13.Nc3 Qa1 14.Qd1 Qb2 (14...Qd1 15.Nd1 Ke7 16.d4=) 15.Bd3 0-0 16.0-0 Re8? (better 16...Qb4=) 17.Qa4+- Ne4 18.Ne4 de4 19.Qe4 Qf6 (19...g6 20.Qb7 Rc8 21.b6+-) 20.Qh7 Kf8 21.Qh5 (21.Be2 e5+-) 21...e5 (21...Rc8 22.Be2+-) 22.Ng5 Bf5 (22...Ke7+-) 23.Bf5 Qf5 (23...Ke7 24.Ne4 Qh6 25.Qh6 gh6+-) 24.Nh7 Qh7 25.Qh7 Nd7 26.Qh8 Ke7 27.Qg7 Ke6 (27...Rc8 28.d4+-) 28.f4 e4 29.f5 Ke7 30.Qd4 (30.f6 Kd6+-) 30...Kf8 31.Qd7 (31.Qd7 Re7 32.Qd8 Kg7 33.f6 Kh6 34.Qh8 Kg5 35.h4 Kg6 36.Qg7 Kh5 37.Qg5) 1–0. DEFFM – GuestPNRK, freechess.org, 2018.

4.e3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Na5 8.Nf3 e6 9.Be2 (9.Bd3 Nf6+=) 9...Nc4 (9...Nf6 10.0-0=) 10.Bc4 dc4 11.Ne5 Bb5 (11...Nh6!? 12.Qf3 Qa8+=) 12.Qh5+- Nh6 13.Nf7 Nf7 14.Qb5 c6 (14...Qd7!? 15.Qb7 Bd6+-) 15.Qb7+- Qd5 (15...Qd7 16.Qa8 Nd8 17.Qa4+-) 16.0-0 Nd8 (16...Nd6 17.Qa8 Kf7 18.Nc3+-) 17.Qc7 Qd6 (17...Qd7 18.Qf4+-) 18.Qd6 Bd6 19.Bg7 Rg8 20.Bb2 Nf7 (20...Nb7 21.Nc3+-) 21.Nc3 Ng5 (21...Ke7+-) 22.f4 Nf7 23.Ra1 Nd8 (23...Rg6 24.Ne4 Be7 25.Ra6+-) 24.Ne4 Be7 25.Bf6 Rg6 26.Be7 Ke7 27.Ra7 (27.Ra7 Kf8 28.Rh7+-) 1–0. GuestFHRY – GuestLLFJ, freechess.org, 2020.

4.e3 e6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Qe7 8.Nf3 Qb4 (8...Nf6 9.Be5 Qc5 10.Nc3+=) 9.Bc3+- Qa4 10.Be5 Bb5?? (better 10...Qa5 11.c4 Ne7+-) 11.Nc3+- Qa5 12.Nb5 Bd6 (12...Na6+-) 13.Bg7 Bb4 (13...Be7 14.Bc3 Qb6 15.Bh8+-) 14.Bh8 f6 15.Bd3 (better 15.Nfd4 c6 16.Qh5 Kd7+-) 15...Kf7 16.Nfd4 c6 17.Qh5 Kf8 (17...Ke7 18.Qh7 Ke8 19.Bg6 Kd8 20.Ne6 Kc8 21.Na7 Qa7 22.Qc7) 18.Ne6 Ke7 19.Qh7 Ke6 20.Bf5 Ke5 21.f4 1–0. GuestRXWT – mikebikeky, freechess.org, 2019.

4.e3 e6 5.c4 Nf6=+ (5...Bb4? 6.Bg7 dc4 7.Bh8+-) 6.c5 Nc6 (6...a5 7.Qb3=+) 7.Qb3 (7.b5 Na5 8.Bc3 Nc4+=) 7...Na7 (7...b6 8.d4=+) 8.Nf3 Be7 9.Bd3 h6 (9...a5 10.0-0=) 10.Ne5 c6 (10...a5 11.0-0=) 11.Nd7 Qd7 12.0-0 Rd8 (12...0-0 13.Bd4+=) 13.f4 Rg8 (13...0-0 14.Bd4+=) 14.f5 Ne4 15.Be4 de4 16.fe6 fe6 (16...Qe6 17.Qe6 fe6 18.Rf4+/-) 17.Bd4 Qd5 18.Qb2 Qh5 19.Qc2 Qg6 20.Nc3+- Bf6 21.Ne4 Qg4?? 22.Bf6 Rd2 23.Qd2 Qe4 24.Qd8 (24...Kf7 25.Bd4 Kg6 26.Qg8+-) 1–0. Rohrbacher – Ganser, Baden–Bayern, 1991.

4.e3 e6 5.Nf3 Nf6=+ (5...Bb4 6.Bg7 f6 7.Bh8+-).

4.e3 Nf6 5.Nf3 e6 6.b5 ab5 7.ab5 Ra1 8.Ba1 c6 9.bc6 bc6 10.Bd3 Bd6 11.0-0 0-0 12.c4 Re8 (12...Bc8 13.c5 Bc5 14.Bf6 Qf6 15.Bh7 Kh8 16.Bc2+=) 13.cd5 (13.Be5 Be5 14.Ne5 Qc7=) 13...cd5 14.Be5 Qe7 15.Bf6 (15.Qc2 Be5 16.Ne5 Rc8=) 15...Qf6+= (worse is 15...gf6 16.Nc3=) 16.Qb3 (16.Qc2 Rc8 17.Nc3 Qh6+=) 16...Nc6 17.Qc3 (17.Bb5 Rb8 18.Qa4 Ne5 19.Bd7 Nf3 20.gf3 Rb1 21.Rb1 Qg6 22.Qg4 Qb1 23.Kg2 e5+=) 17...e5 18.Na3? (better is 18.Bb5 Rc8 19.Qa1-/+) 18...Ba3–+ 19.Qa3 e4 0–1. tanto (1715) – bmacfie (1900), net–chess.com, 2002.

4.e3 e5 5.b5 a5 6.Nf3 Bd6 7.c4 Ne7 (7...Ngf6 8.d4 e4 9.Nfd2=) 8.cd5 (8.d4 Bb4 9.Bc3 e4 10.Bb4 ab4+=) 8...Nd5=+ 9.Nc3 N7f6 (better 9...Nc3!? 10.Bc3 0-0=) 10.Nd5+= Nd5 11.Ne5 0-0 12.f4 (12.Qf3 Be6+=) 12...f6 (12...Bb4 13.Kf2+=) 13.Nf3 Bg4 (13...Re8 14.Bc4 Be6 15.f5+-) 14.Bc4+- c6 15.0-0 Bf3 (better 15...Kh8!?+-) 16.Qf3+- (16.gf3?! Kh8+-) 16...Kh8 17.Bd5 Bb4?? (17...cd5 18.Qd5 Qe7+-) 18.bc6 Bd2 (18...bc6 19.Bc6 Rc8 20.d4+-) 19.cb7 (19.cb7 Rb8 20.Bd4+-) 1–0. GuestTLTP – GuestVTQK, freechess.org, 2017.

4.e3 e5 5.b5 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3 Bd6 9.c4 Ngf6 10.Be2 0-0 11.0-0 Re8 12.d4 e4 13.Nfd2 Bb8 14.Nc3 Qc7 15.g3 Nf8 16.cd5 (16.Qb3!? Be6 17.Bb2+-) 16...cd5= 17.Qb3 Be6 18.b6 Qd6 19.Bb2 N8d7 20.Ba3 Qb6 21.Rb1 (21.Rc1 Rc8=) 21...Qb3=+ 22.Rb3 b6 (22...Rc8 23.Ndb1=+) 23.Bb5 (23.Ba6 g5=) 23...h6 (23...Rc8 24.Kg2=) 24.Bd7 (24.Ba6 Bc7=) 24...Nd7=+ 25.Nb5 (25.Rb5 Nf6 26.Rb6 Bc7=+) 25...g5 (25...Rc8 26.Nb1-/+) 26.Bd6 (26.Rc3 h5-/+) 26...Bd6-/+ 27.Nd6 Ra8 28.Kg2 h5 (28...Ra2 29.Nb1-/+) 29.Nb1 (29.Rb2 Kf8-/+) 29...Ra2 (29...Bg4!?-/+) 30.Nc3 Rc2 31.Ncb5 (31.h3 Kf8=+) 31...h4 (31...Nf6 32.Rc3 Rb2 33.h3–+) 32.h3 (32.gh4 gh4 33.Rc3 Rb2=+) 32...hg3-/+ 33.Kg3 Kg7 (33...Rc1 34.Rc3 Rh1 35.Rc8 Nf8 36.Rd8=+) 34.Ra3 (34.Rc3 Rb2=+) 34...Nf8 (34...Nf6 35.Ra7-/+) 35.Ra8 (35.Rc3 Rc3 36.Ne8 Kg6 37.Nc3 Nd7=) 35...Ng6 36.Ne8 (36.Nc7 Nh4 37.Ne6 fe6=+) 36...Kh7 (better 36...Kh6!? 37.Nec7 Ne7 38.Ne6 Nf5 (38...fe6?! 39.Nd6=) 39.Kg2 Ne3 (worse 39...fe6 40.Kf1-/+) 40.Kg1 Rc1 41.Kh2 Nf1 42.Kg2 fe6–+) 37.Nf6=+ Kg7 38.Ne8 Kh7 39.Nbd6 (39.Nf6 Kh6 40.Nd6 Ne7=+) 39...Rc6 (better 39...Nh4 40.Nf6 Kg7 41.Nde8 Kg6–+) 40.Nf6= Kg7 41.Nde8 Kh6 42.Ng4 Bg4 43.hg4 Re6 44.Nc7 Re7? (44...Rd6 45.Nb5 Rf6 46.Rd8=) 45.Nb5 (45.Nd5 Re6+-) 45...Kg7 (better 45...Rd7!?+=) 46.Ra6 (better 46.Rd8!?+-) 46…Rb7 0–1. GuestYTVV – GuestVWTG, freechess.org, 2019.

4.Nf3 f6 5.e3 (5.Nc3 e6 6.b5 Bc5+=) 5...e5 6.c4 (6.Nc3 c6 7.b5 Bd6=) 6...dc4 (6...Bb4 7.cd5 Ne7 8.Qb3=+) 7.Bc4+= Bb4? (7...Nb6 8.Bb3 Qd3 9.Bc2+=) 8.Qb3 (better 8.Bg8 Nc5 9.Bc4 Nd3 10.Bd3 Qd3 11.Nc3+-) 8...Bd2?? (better 8...Qe7+=) 9.Nbd2+- (worse 9.Nfd2 Ne7 10.Bf7 Kf8+-) 9...Nc5 10.Qc2 (10.Bg8 Nb3 11.Bb3 Bg4-/+) 10...Bg4 (10...Ne7 11.Ba3 b6 12.0-0+-) 11.Ne5! fe5 12.Be5 (better 12.Ba3!? Nd7 13.f3+-) 12...Nf6 13.0-0 Ncd7 (13...Be6 14.Rad1 Qe7 15.Bd4+-) 14.Bd4 c5 15.Bc3 Qe7 (15...Qc7 16.f3 Bh5 17.Rab1+-) 16.Qb3 0-0-0 (16...Rd8 17.Qb7 Ne5 18.Ba6+- (worse 18.Qa6 Bc8 19.Qb5 Bd7+-)) 17.Rab1 Nf8 (17...Ne5 18.Be5 Rd2 19.Ba6+-) 18.Qb6 Qc7 (18...Nd5 19.Qa7 b5 20.Qa8 Kd7 21.Qd5 Ke8 22.Qc6 Bd7 23.Qa6 bc4 24.Nc4+-) 19.Qa7 Ne6 (19...Rd6 20.Be5 b5 21.Qa8 Kd7 22.Bd6 Kd6 23.ab5 ab5 24.Rb5 Ke7+-) 20.Be5 Qc6 21.Rb6 Qb6 22.Qb6 Nd7 23.Qc6! bc6 (23...bc6 24.Ba6 Mate attack) 24.Ba6 1–0. GuestTYBF – GuestNZTS, freechess.org, 2020.

4.Be5 Bb4 5.Bg7 d4 6.Bh8 Bf5 (6...Nc6 7.c3 dc3 8.dc3 Qd1 9.Kd1+-) 7.e3 (7.c3 dc3 8.dc3 Bd6+-) 7...de3 8.c3 (8.fe3 Qh4 9.Ke2 Nd7+-) 8...Bc5 (8...ef2 9.Kf2 Bd6 10.Qh5+-) 9.d4 (9.de3 Nc6+-) 9...Bb6 (9...ef2 10.Kf2 Nf6 11.Bf6 Qf6 12.Nf3+-) 10.a5 (10.Qe2 Qe7 11.Qe3 Nd7+-) 10...Ba7 (10...ef2 11.Kf2 Ba7 12.Bd3+-) 11.Qe2 Qg5 (11...Nc6 12.Qe3 Qe7 13.Nf3+-) 12.Nf3 Qf6 (12...Qe7+-) 13.Bf6 Nf6 14.Qe3 Be6 15.Bc4 (15.Bc4 Nbd7 16.Be6 fe6 17.Qe6 Kd8 18.Ne5+-) 1–0. DEFFM – elhursaen, freechess.org, 2018.

4.Be5 Nc6 5.Nf3 Nb4 (5...Ne5!? 6.Ne5 Bb4-/+) 6.e3= Be6 7.Nd4 Qd7 8.Ne6 Qe6 9.d4 Qd7 (9...c5 10.Be2=) 10.Be2 Nh6 11.0-0 Nc6 12.Bf4 g6 13.c4 Rc8 (13...dc4!? 14.Bc4 Nf5+/-) 14.cd5+- Qd5 15.Bf3 Qf5?? (better is 15...Qd7+-) 16.Bh6 Ne5 (16...Qf6 17.Bf8 Rf8 18.Nd2+-) 17.de5 (better is 17.Bb7!? Bh6 18.Bc8 Qc8 19.de5 Bg7+-) 17...Rd8 18.Qb3 Bh6 19.Qb7 0-0 20.Qe4 (20.Qa6!? Bg7+-) 20...Qe4 21.Be4 Rde8 22.f4 Kg7 (22...f6 23.Bd5 Kh8 24.e6+-) 23.Nc3 g5 (23...f5 24.Bb7 Re6 25.Rac1+-) 24.Nd5 gf4 (24...f5 25.ef6 Kh8 26.Bf3+-) 25.ef4 Bf4 (25...c6 26.Nf6 Rc8 27.Rab1+-) 26.Rf4 c5 (26...Re5 27.Nc7 a5 28.Rd1+-) 27.Rc1 (27.Rg4 Kh6 28.Rf1 f5 29.ef6 Re4 30.Re4 Rf7 31.Rf3 Rb7 32.f7 Rb1 33.Kf2 Rb2 34.Kg3 Rg2 35.Kg2 c4 36.f8Q Kh5 37.Rf5 Kg6 38.Qf6) 27...Re5 28.Rc5 f5 (28...Rd8 29.Rg4 Kf8 30.Rh4+-) 29.Rc7 Kh8 (29...Rf7 30.Rf7 Kf7 31.Rf5 Rf5 32.Bf5 Kg7+-) 30.Rh4 Rfe8 (30...Re7 31.Re7 h6 32.Rh6 Kg8 33.Rhh7 Rf7 34.Ref7 fe4 35.Nf6) 31.Rhh7 Kg8 32.Nf6 Kf8 33.Rcf7 1–0. Hal1958 – Chief_Boomga, playchess.de, 2002.

4.Ra3 Nc6 A) 5.Rg3 Nf6 (5...e5 6.Nf3 e4 7.b5 Na5 8.Ng1 ab5 9.ab5 Nf6 10.e3 h6+=) 6.b5 ab5 7.ab5 Na5 8.e3 Ne4 9.Rf3 f6 10.d3 Nd6+=; B) 5.b5 Na5 (5...Nb8 6.Nf3 Nf6 7.Ra1 Bd6 8.e3 0-0 9.Be2 Re8 10.Ne5 Nfd7+=) 6.ba6 ba6 7.Bc3 c5 8.Nf3 Nf6 9.e3 Bd6 10.Be2 d4+=.

4.Ra3 Bd7 A) 5.a5 Nf6 (5...Nc6 6.c3 Bd6 7.d4 Nf6 8.Nf3 e5 9.de5 Ne5 10.Ne5 Be5+=) 6.Bf6 Qf6 7.Rf3 Qe7 8.Rb3 Nc6 9.c3 Ne5 10.Ra3 c5-/+; B) 5.b5 Nf6 (5...Ba3 6.Bg7 Be7 7.Bh8 ab5 8.ab5 Bb5 9.Nf3 Nc6 10.Nc3 Ba6=) 6.Rb3 ab5 7.ab5 Bd6 8.Nf3 c5 9.bc6 Nc6 10.Bc3 e5-/+.

4.Ra3 Nf6 A) 5.Rg3 Bd7 (5...Nbd7 6.e3 Ne4 7.Rh3 e5 8.f3 Nef6 9.Rg3 Be7 10.Be2 0-0-/+) 6.c3 Bd6 7.Rg7 Nh5 8.Rg4 e5 9.e3 Bg4 10.Qg4 Nf6-/+; B) 5.Rb3 Bd6 (5...Nc6 6.b5 ab5 7.ab5 Na5 8.Rf3 Be7 9.e3 0-0 10.Rf4 Bd7+=) 6.e3 Nc6 7.Bc3 e5 8.Nf3 0-0 9.d4 e4 10.Ne5 Nb8-/+.

4.b5 a5 5.Nf3 b6 (5...Nf6 6.g3=) 6.e3 Bb7 7.c4 f6? (better 7...Nf6!?+=) 8.cd5+- Qd5 (8...ed5 9.Bd3+-) 9.Nc3 Qd8 (9...Qd6 10.Bc4 Nd7 11.Ba3+-) 10.Bc4 (10.Nd4 Qd6 11.Bc4 e5+-) 10...Bd5 (10...Nd7 11.d4+- (11.Be6?! Nc5 12.Nd4 Qd6 13.Bg8 Rg8+-)) 11.Bd5 (11.Nd5 ed5 12.Bb3 c5+-) 11...ed5 12.Nd4 Qd6 (12...Ne7 13.Ne6 Qd6 14.Nf4+-) 13.Qh5 (13.Qf3!? Ne7 14.Ba3 Qd7 15.Be7 Be7 16.Nd5 Ra7+-) 13...g6 14.Qf3 (better 14.Qd5 Qd5 15.Nd5+-) 14...f5 (14...Ne7 15.Ba3 Qe5+-) 15.Nd5 Nd7 (15...Ra7 16.Nb3 Nh6 17.Bh8 Nf7+-) 16.Nc7! Qc7 (16...Kf7 17.Qa8 Qc7 18.Qd5 Ke8 19.Ne6+-) 17.Qa8 Ke7 (17...Qb8 18.Qb8 Nb8 19.Nc6 Nc6 20.bc6+-) 18.Nc6 (18.Nc6 Kf7 19.Rc1+-) 1–0. GuestXFHR – guestz, freechess.org, 2020.

4.b5 ab5 5.ab5 Ra1 6.Ba1 c5 7.e3 b6 8.c4 f6 9.Nf3 Bb7 10.Be2 Nd7 11.0-0 Bd6 12.d4 Ne7 13.Nbd2 0-0 14.Qb3 Qc7 15.Rc1 Ra8 16.Bb2 Kh8 17.h3 Ra7 18.cd5 ed5 19.dc5 bc5 20.Ra1 Ra1 21.Ba1 Qa5 22.Bc3 Qb6 23.Qb2 Qc7 24.Qa1 Ne5 25.Ne5 Be5 26.Nf3 Bc3 27.Qc3 Qd6 28.Qa5 g6 29.Qa7 Qc7 30.Ne1 (better 30.b6 Nc6 31.bc7 Na7 32.Ne1+=) 30...Qc8? (30...Nc8 31.Qa3 Kg7 32.Nd3+=) 31.Nc2 (better 31.Nd3 c4 32.Nc5+-) 31...Nf5 32.Bg4 Kg7 33.Bf5 gf5 34.b6 (34.Qb6!?+-) 34...Kg6 35.Na3 (35.Qa4 Qe6+=) 35...c4 (better 35...Qc6!? 36.f3 f4 37.ef4 h5=) 36.Nb5+- c3 (better 36...f4!? 37.Nd6 Qe6+-) 37.Nc3!+- Qc3 A deflection (37...d4 38.Ne2 Qc6 39.Nf4 Kf7 40.Qa2 Ke7+-) 38.Qb7 Qe1 39.Kh2 Qf2 40.Qc7 Qe3 41.Qg3 Qg3 (41...Qg5 42.b7 f4 43.Qg5 fg5 44.b8Q+-) 42.Kg3 (42.Kg3 Kf7 43.b7+-) 1–0. BeepBeepImAJeep (2575) – pidargi (2240), lichess.org, 2017.

4.b5 Bd7 A) 5.Nc3 Nf6 (5...d4 6.Ne4 f5 7.Ng3 f4 8.Ne4 Nf6 9.Nf6 Qf6 10.e3 fe3=) 6.Nf3 Bd6 7.e3 e5 8.Be2 e4 9.Nd4 c5 10.bc6 Nc6+=; B) 5.e3 Nf6 (5...c6 6.Nf3 Nf6 7.Be2 Bd6 8.0-0 0-0 9.ba6 Na6 10.Be5 Be5=) 6.Nf3 Bd6 7.Be2 Qe7 8.Ne5 0-0 9.0-0 ab5 10.ab5 Ra1=.

4.b5 Nd7 A) 5.Nf3 Ngf6 (5...ab5 6.ab5 Ra1 7.Ba1 Ngf6 8.e3 Bd6 9.Be2 0-0 10.0-0 e5+=) 6.e3 Bd6 7.Be2 e5 8.0-0 0-0 9.Ba3 Qe7 10.Bd6 Qd6+=; B) 5.e3 ab5 (5...Ngf6 6.Nf3 Bd6 7.Be2 e5 8.Nc3 0-0 9.0-0 c5 10.d3 Re8+=) 6.ab5 Ra1 7.Ba1 e5 8.Nf3 Bd6 9.Be2 Ngf6 10.0-0 Qe7+=.

4.b5 Nf6 A) 5.e3 Bd6 (5...ab5 6.ab5 Ra1 7.Ba1 Bd6 8.f4 Bd7 9.Nf3 0-0 10.Be2 c6=) 6.Nf3 0-0 7.Be2 Re8 8.Nc3 e5 9.0-0 c5 10.d3 Bf5+=; B) 5.Nf3 Bd6 (5...Bb4 6.e3 0-0 7.Be2 Nbd7 8.0-0 ab5 9.ab5 Ra1 10.Ba1 Bd6=) 6.e3 0-0 7.Be2 Re8 8.Ne5 ab5 9.ab5 Ra1 10.Ba1 Nfd7=.

4.e3 Bb4?? 5.Bg7 Nf6 6.Bh8 Kd7 7.Bf6 Qf6 8.c3 Bd6 9.Nf3 c5 10.Be2 c4 (10...Nc6 11.d4+-) 11.0-0 (11.d3 cd3 12.Bd3 Nc6+-) 11...Nc6 (11...e5 12.Ne1+-) 12.d3 Be5 (12...cd3 13.Bd3 h6 14.e4+-) 13.dc4 Bc3 (13...Ke8 14.cd5 ed5 15.Qd5+-) 14.Nc3 Qc3 15.cd5 (15.cd5 ed5 16.Qd5 Ke8 17.Ng5+-) 1–0. GuestVZKF – GuestTJTQ, freechess.org, 2018.

4.e3 Bb4?? 5.Bg7 Qg5 6.Bh8 f6 (6...Nc6 7.Nf3 Qe7 8.Ne5+-) 7.Nf3 (7.Nh3 Qh6 8.Qg4 Qf8+-) 7...Qg6 (7...Qh6 8.g4+-) 8.Bd3 Qf7 9.0-0 (9.Nc3 Nh6 10.g4 Bc3 11.dc3 Ng4+-) 9...Nc6 10.c3 (better 10.Nc3 Nge7 11.Nh4 Ne5+-) 10...Bd6 11.c4 (better 11.Nd4 Nge7 12.e4+-) 11...Qh5 (11...Nge7 12.Qc2+-) 12.cd5 (better 12.Nc3 Bd7 13.h3 Qf7 14.cd5 ed5+-) 12...ed5 13.Nc3 Be6 (13...Kf7 14.Qb3 Na5 15.Qb2+-) 14.Qb1 (14.h3 Nb4 15.Be2 Bh3+-) 14...Rb8 (14...0-0-0 15.Ne2 (15.Bh7?! f5+-) 15...Nh6 16.Bf6+-) 15.Bh7 (15.Re1 Kf7 16.Qb2 Bg4+-) 15...Qh6 (15...Kf7 16.h4+-) 16.Qg6 Qg6 17.Bg6 Bf7 (17...Kd7 18.Bg7+-) 18.Bh7 Ke7 19.Rfe1 Kf8 (19...Nh6 20.Bg7 Ng4 21.e4+-) 20.Bg8 Kg8 21.Bf6 Bh5 (21...Nb4 22.Rab1 Bg6 23.Rb4 Bb4 24.Nd5+-) 22.Nd5 Kf7 (22...Bf3 23.gf3 Kf7 24.e4+-) 23.Ng5 Kg6 24.Reb1 (24.Rab1 Bg4+-) 24...Ne5 (24...Be2 25.Ne4 Bd3 26.Nd6 Bb1 27.Nc7+-) 25.f4 Nd3 (25...Nc4 26.Ne4 Be2 27.Nd6 cd6 28.Bd4 Nd2 29.Rb2+-) 26.Ne4 (26.Be7 Ne5+-) 26...Rg8 (26...Kf5 27.Nd6 cd6 28.Rb6+-) 27.Nd6 (27.Nd6 cd6 28.Ne7 Kf6 29.Ng8 Kg7 30.Ne7+-) 1–0. DEFFM – GuestFHZP, freechess.org, 2019.

4.e3 c5 5.bc5 Bc5 6.Bg7 Nf6 7.Bh8 Kd7 (7...e5 8.Nc3 Be6 9.Rb1+-) 8.Bg7 Bd6 9.c4 Be5 (9...dc4 10.Bc4 Ne4 11.Qh5+-) 10.d4 Bc7 11.Qf3 Ba5 12.Nd2 (12.Kd1 Ne4 13.cd5 Qg8 14.Qe4 Qg7+-) 12...Ne4 (12...Bd2 13.Kd2 Ne4 14.Kd1+-) 13.Qf7 Kc6 (13...Qe7 14.Qe7 Ke7 15.Ngf3+-) 14.cd5 Qd5 15.Ngf3 Nd7 (15...Kb6 16.Qg8 Qf5 17.Qc8 Bd2 18.Ke2+-) 16.Rc1 Bc3 (16...Kb6 17.Bc4 Qc6 18.Qe6+-) 17.Bd3 Nd2 18.Rc3 Kb6 19.Nd2 Qg2 20.Be4 (20.Be4 Qg5 21.Rb3 Kc7 22.Be5 Qe5 23.de5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 c6 5.b5 (--> 1.b4 d5 2.Bb2 e6 3.b5 a6 4.a4 c6 5.e3).

4.e3 Nd7 5.b5 Ngf6 (5...ab5 6.ab5 Ra1 7.Ba1 Ngf6 8.f4 Bd6 9.Nf3 0-0 10.Be2 c5=) 6.Nf3 Bd6 7.Be2 0-0 8.0-0 ab5 9.ab5 Ra1 10.Ba1 e5+=.

4.e3 Nd7 5.Nc3 Bb4 6.Nd5 Bf8 7.Nc3+=.

4.e3 Nd7 5.Nc3 Ngf6=+.

4.e3 Nd7 5.c4 c6 (5...Ngf6 6.cd5 ed5 7.Nc3 Bb4 8.Qc2-/+) 6.Nf3 Qc7 (6...Ngf6 7.Ba3=) 7.Be2 (7.cd5 ed5 8.Nc3 Ngf6=) 7...Ngf6 8.Qb3 g6 (8...Qb6!?=) 9.Nc3 Bg7 (9...a5 10.b5+=) 10.d4 0-0 11.0-0 Nb6 12.c5 Nbd7 13.b5 b6 (13...e5!?+=) 14.cb6+- Nb6 (14...Qb6 15.Ba3 c5 16.a5 Qa5 17.dc5+-) 15.a5+- Nbd7 16.b6 (16.b6 Qb8 17.Ba3+-) 1–0. GuestRDTL – GuestHMC, freechess.org, 2019.

4.e3 Nd7 5.Nf3 f6 (5...Ngf6 6.b5 ab5 7.Bb5 Bd6 8.Ba3 Ba3 9.Ra3 c6 10.Be2 e5+=) 6.Nd4 Nb8 7.Qg4 e5 8.Ne6 Qe7 9.Ng7 Kd8 10.Qf3 Qg7-/+.

4.e3 Ne7 5.Nf3= Nd7 6.Be2 (6.Nc3 Nf6=) 6...Nb6 (6...Nf5 7.c4=) 7.b5 (7.0-0 Nf5 8.a5 Nd7+-) 7...ab5= 8.ab5 Ra1 9.Ba1 Nf5 10.0-0 Be7 11.g4 Nd6 12.Bg7 Rg8 13.Bd4 Rg4 (13...Nf5 14.Kh1 Nd4 15.Nd4=) 14.Kh1 Nf5 15.Rg1 Rg1 16.Qg1 Nc4 (16...Nd4!? 17.Qg8 Bf8 18.ed4 h6=) 17.Qg8+= Kd7 (better 17...Bf8!?+=) 18.Qf7+- Qf8 19.Qh7 Ncd6 (better 19...Nd4!? 20.ed4 Qf5 21.Qf5 ef5+-) 20.Ne5 Kd8 21.Bc5 (21.Ng6 Qf7 22.Qf7 Nf7+-) 21...Ne4 22.Be7 Ke8?? (22...Ne7 23.f4 Bd7+-) 23.Bh5 (23.Bh5 Qf7 24.Qf7) 1–0. GuestWXLK – GuestPXXT, freechess.org, 2019.

4.e3 f6 A) 5.Bc3 Bd6 (5...e5 6.d4 ed4 7.ed4 Nc6 8.b5 Nb4 9.ba6 Qe7 10.Be2 ba6=) 6.Bd3 Qe7 7.Qh5 Kd8 8.b5 e5 9.e4 Be6 10.Nf3 g6+=; B) 5.c3 Bd6 (5...Nh6 6.Nf3 e5 7.Be2 Be6 8.0-0 Bd6 9.a5 0-0 10.d3 Nc6=) 6.Bd3 f5 7.f4 Qh4 8.g3 Qe7 9.Qh5 g6 10.Qd1 Nf6=.

4.e3 Nf6 A) 5.b5 ab5 (5...Bd6 6.Nf3 0-0 7.Be2 Re8 8.Ne5 ab5 9.ab5 Ra1 10.Ba1 Nfd7=) 6.ab5 Ra1 7.Ba1 Bd6 8.Nf3 Nbd7 9.Be2 0-0 10.0-0 e5+=; B) 5.Bc3 Bd6 (5...Ne4 6.b5 Nc3 7.Nc3 ab5 8.ab5 Ra1 9.Qa1 Bd6 10.Nf3 0-0+=) 6.Nf3 0-0 7.Be2 Ne4 8.b5 Nd7 9.0-0 e5 10.Bb2 Nef6+=.

4.Nf3 Bb4?? 5.Bg7+- Nc6 6.Bh8 1–0. marre – hoja68, internet, 2010.

4.Nf3 Nc6 5.b5= ab5 (5...Na5 6.e3=) 6.ab5 Ra1 7.Ba1 Na7 8.e3 Nb5?? (better 8...Bd7 9.Nc3 Nf6=) 9.Bb5+- Bd7 10.Bd7 Qd7 11.0-0 h6 (11...f6 12.Re1+-) 12.Ne5 Qd6 (12...Qd8 13.c4 c6 14.cd5 ed5 15.Qb3+-) 13.Qh5 (better 13.c4 c6 14.cd5 ed5 15.Qb3+-) 13...g6 (13...Qe7+-) 14.Nf7! Kf7 15.Qf3 (15.Qf3 Ke8 16.Bh8+-) 1–0. DEFFM – Guesthut, freechess.org, 2018.

4.Nf3 Bd7 A) 5.Nc3 c6 (5...Nf6 6.b5 Bd6 7.e3 e5 8.Be2 0-0 9.d4 e4 10.Ne5 Qe7+=) 6.b5 Nf6 7.e3 Bd6 8.bc6 Nc6 9.Ba3 Ba3 10.Ra3 Qe7+=; B) 5.e3 Nf6 (5...f6 6.b5 e5 7.Be2 Bd6 8.0-0 Ne7 9.d4 e4 10.Nfd2 ab5=) 6.b5 Bd6 7.Be2 0-0 8.0-0 Re8 9.Ne5 c5 10.f4 ab5=.

4.Nf3 f6 A) 5.c3 Bd6 (5...e5 6.e3 Bd6 7.d3 a5 8.b5 Ne7 9.Be2 0-0 10.Ba3 c5=) 6.e3 e5 7.Be2 Ne7 8.0-0 0-0 9.d3 Be6 10.Nbd2 a5+=; B) 5.b5 e5 (5...Ne7 6.e3 e5 7.Be2 Nf5 8.0-0 Bd6 9.Nc3 e4 10.Ne1 Be6=) 6.e3 Bd6 7.d4 e4 8.Nfd2 f5 9.c4 Nf6 10.c5 Be7=.

4.Nf3 Nf6 A) 5.Bc3 Nbd7 (5...Bd6 6.e3 0-0 7.Be2 Ne4 8.b5 Nd7 9.0-0 e5 10.Bb2 Nef6+=) 6.e3 Bd6 7.Be2 Qe7 8.b5 e5 9.0-0 0-0 10.Bb2 e4+=; B) 5.b5 ab5 (5...Bd6+= 6.e3 0-0 7.Be2 Re8 8.Ne5 ab5 9.ab5 Ra1 10.Ba1 Nfd7+=) 6.ab5 Ra1 7.Ba1 Nbd7 8.e3 Bd6 9.Be2 e5 10.0-0 0-0+=.

4.e3 a5 5.b5 c6 6.Nf3+= f6 (6...Nf6 7.Be2+=) 7.Nd4 (7.Nh4 Be6+=) 7...Bd7= 8.f4 e5 (8...Nh6!?+=) 9.fe5+- fe5?? (better 9...c5 10.Nf3 Be7+-) 10.Qh5+- g6 11.Qe5 Qe7 12.Qh8 Qg7 13.Nb3 Qh8 14.Bh8 Nh6 15.Be2 Nf7 16.Bb2 (16.Bd4 Bf5 17.Ra2 Bd6+-) 16...Nd6 17.0-0 Be7 18.Nc3 Nf7 (18...Nc4 19.bc6 Bc6 20.Bc4 dc4 21.Nd4+-) 19.e4 (19.Rf2 Bh4 20.g3 Be7+-) 19...de4 20.Ne4 Bf5 (20...cb5 21.Bb5 Nh6 22.Nf6 Kd8 23.Nd5+-) 21.Bc4 Nd6 22.Nd6 Bd6 23.Rae1 Kd8 24.Bf6 Kc7 25.Re8 Kb6 (25...h6 26.Rh8 cb5 27.Bb5+-) 26.bc6 (26.Rh8 Bc2 27.Bd4 c5+-) 26...bc6 27.Bd8 Bc7 28.Bf6 (28.Bg5!? Bd6+-) 28...Bd6 29.Bd8 Bc7 30.Bg5 Bd6 31.Be3 Kb7 32.Be6 Nd7 (32...Be6 33.Re6 Kc7 34.Rf7 Nd7 35.Rh7+-) 33.Ra8 Ka8 34.Rf5 (34.Rf5 gf5 35.Bd7+-) 1–0. onur604 (2320) – veli87 (2065), lichess.org, 2020.

4.e3 c6 5.Nf3 h6 (5...Nf6 6.a5=) 6.Be2 Nd7 7.c4 (7.0-0 Ngf6+=) 7...Ngf6 8.cd5 Nd5 9.Nd4 (9.b5 cb5 10.ab5 Nb4=) 9...Bh7 (9...Bg6!? 10.b5 ab5 11.ab5 Ra1 12.Ba1 e5=+) 10.Ne6= fe6? (10...Qb6 11.Ng7 Bg7 12.Bg7 Rg8 13.Bh6 Qb4=+) 11.Bh5+- g6 12.Bh8 e5 13.Bg4 Nb4 14.0-0 Nd3 15.Nc3 a5 (15...N7c5 16.Bf3+-) 16.Ne4 (16.Rb1+-) 16...h5? (better 16...Nf6 17.Bf3 g5+-) 17.Bh5!+- e6 (17...gh5 18.Qh5 Decoy to h5) 18.Qg4 (18.Qg4 Qe7 19.Bg6 Bg6 20.Qg6 Qf7 21.Qg4+-) 1–0. DEFFM – GuestMHVH, freechess.org, 2019.

4.e3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Na7 8.Bd4 Nc8 9.Nf3 Nf6 10.Be2 Nd6 11.0-0 e6 12.Nh4 Be7 13.Bb2 0-0 14.d4 Nc4 (14...Be4!?=) 15.Bc4+= dc4 16.Nf5 ef5 17.Qe2 Qd5 18.Nc3 (18.Nc3 Qe6 19.Ra1+=) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.e3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nb4 8.d3 Qa8 9.Bc3 e6 10.Nf3 Qa2 11.Nd4 e5 12.Nf5 Nc2 13.Ke2 Nd4 14.Ke1 Nf5 15.Be5 Bb4 (15...Nf6 16.Be2 (16.Bc7? Bb4 17.Nd2 0-0–+) 16...Bb4 17.Kf1-/+) 16.Nd2 (16.Bc3 Qb2 17.Bb4 Qb4 18.Nd2 Nf6-/+) 16...Nge7 17.Bc7?? (better 17.Qc1 0-0 18.Qb2 (18.Bc7?? b6 19.g3 Rc8–+) 18...Qb2 19.Bb2–+) 17...0-0–+ 18.Be2 (18.Qc1 b6! 19.g3 Rc8–+) 18...d4 (better 18...Ra8 19.Qc1 Ra3–+) 19.e4 Ne3 20.fe3 de3 21.Kf1 Bd2 (21...Qd2?! 22.Qd2 ed2 23.Kf2=) 22.b6 (better 22.Kg1–+) 22...Qb2 23.g3 Qf6?? (better 23...Nc6 24.Bf4 f6–+) 24.Kg2-/+ Ng6 (better 24...Ra8 25.Rf1 Qe6-/+) 25.Rf1+= Qc3 26.Qb1 Ra8 (26...Qc6 27.d4+=) 27.Qb5 Qc6?? (better 27...Qd4+=) 28.Qc6+- bc6 29.b7 Re8 30.b8Q (better 30.Ra1 Bb4 31.Ra8+-) 30...Rb8 31.Bb8 1–0. onur604 (2320) – kitoss (1820), lichess.org, 2020.

4.e3 Nd7 5.Nf3 Ngf6 6.c4 b6 (6...dc4!? 7.Bc4 Nb6=+) 7.cd5 Nd5 8.Nd4 e6 (8...Bg6 9.Nc6 Qc8 10.b5+=) 9.Nf5 ef5 10.b5 a5 (10...Nb4!?+=) 11.Bc4 (11.Qc2 N5f6+/-) 11...Nb4 12.0-0 Nf6 (12...Qh4 13.Qb3 Qh5 14.Qc3+/-) 13.Qf3 g6?? (better 13...Ne4+-) 14.Bf6 Qf6 15.Qa8 Ke7 1-0. wgr069 (2375) - Aspross (2490), Casual Rapid game, lichess.org, 2021.

4.e3 e6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nd7 8.Nf3 h6 (8...Ngf6 9.Nc3=+) 9.Be2 Ngf6 10.0-0 Be7 (10...Bc5 11.d4 Bd6 12.c4=+) 11.d4 (11.Bb2 0-0=) 11...0-0 12.c4 dc4 (12...Qa8 13.Nc3=+) 13.Nbd2 c6 (13...Qa8!?=+) 14.bc6= bc6 15.Nc4 c5 (15...Qc7 16.Bd3=) 16.Bd3 (16.dc5 Bc5 17.Nd6 Bh7=) 16...Bd3 17.Qd3 cd4 18.Bd4 Nc5 (18...Qc7 19.Ra1=) 19.Qc2 Nfe4 (19...Qc7 20.Be5 Qb7 21.Nd4=) 20.Nfe5+= Bf6?? (better 20...Qc7+=) 21.f3+- Be5 (21...Qd5 22.fe4 Ne4 23.Rf4+-) 22.Ne5 (22.Be5?! f6 23.Rd1 Qe7+-) 22...f6 (22...Nb3 23.Nc6 (23.Qe4?! Nd2 24.Qg4 f5+-; 23.Qb3?! Nd2 24.Qd1 Nf1 25.Qf1 Qa8+-) 23...Nd4 24.ed4+- (24.Nd4?! Nf6=; 24.Qe4?! Ne2 25.Kh1 Qd2=)) 23.Ng6 (23.Bc5?! Nc5 24.Ng6 Nd7 25.Nf8 Nf8+-) 23...e5 (23...Re8 24.fe4 Nd7+-) 24.Qc4 Kh7 (24...Rf7 25.Ne5 fe5 26.fe4+- (26.Bc5 Nd2 27.Qa2 Nf1 28.Kf1 Qc7 29.Qa8 Kh7 30.Qe4 g6-/+)) 25.Nf8 Qf8 26.Bc5 Nc5 27.Rc1 Nb7 (27...h5 28.Qc5 Qb8 29.f4+-) 28.Qe4 f5 29.Qb7 Qa3 30.Re1 Qc3 31.Kf2 h5 (31...Qd2 32.Re2 Qd8 33.Qf7+-) 32.Qf7 f4 (32...Qc8 33.Qh5 Kg8 34.Kg3+-) 33.Qh5 Kg8 34.ef4 ef4 (34...Qd2 35.Re2 Qd4 36.Kg3 Qf4 37.Kh3 Qh6 38.Qh6 gh6 39.Re5 Kf7 40.Kg4 Kg6 41.f4 h5 42.Kh3 Kf7 43.Kh4 Kg6 44.f5 Kf6 45.Rb5 Kf7 46.Rd5 Ke7 47.Kh5 Kf6 48.Kh6 Kf7 49.Kg5 Kg7 50.f6 Kf7 51.Rd6 Kf8 52.Kg6 Ke8 53.h4 Kf8 54.Rd8) 35.Re8 1–0. GuestYNWW – GuestXQJH, freechess.org, 2020.

4.e3 e6 5.b5 ab5 6.ab5 Ra1 7.Ba1 h6 8.Nf3 Ne7 (8...Nf6 9.Be2=) 9.c4 (9.Be2 c5+=) 9...dc4= 10.Bc4 Ng6 (10...Bd3 11.Bd3 Qd3 12.Nc3=) 11.0-0 Be4 (11...Nh4 12.d3+=) 12.d3+= Bd5 13.Bd5 Qd5 14.Qa4 Qd3?? (better 14...Qd8+-) 15.Rd1+- Qf5 16.b6 (better 16.Qa8!? Bd6 17.Qb8 Ke7 18.Qb7 Rd8+-) 16...c6 17.Qa8 Qc2 (17...Bd6 18.Bg7 Rg8+-) 18.Qb8 Ke7 19.Qd8 1–0. DEFFM – GuestFDSS, freechess.org, 2018.

4.e3 e6 5.b5 Nf6 6.Nf3 Nbd7 7.Be2 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nh4 Qa8 11.Nf5 (11.Bf6 Nf6 12.Nf5 ef5+=) 11...ef5 (11...Qa1!? 12.Ng3 h5=) 12.Bb2 Bd6 13.0-0 0-0 14.c4 Qb8 15.f4 dc4 16.Bc4 cb5 17.Bb5 Nc5? (better 17...Rc8+=) 18.Bf6+- gf6 19.Qh5 Qc8 20.Rf3 Ne4 21.Nc3 Rd8 22.Ne4 (better 22.Bd3 Re8 23.Be4 fe4 24.Rg3 Kf8 25.Qh7+-) 22...Qc1?? (better 22...fe4 23.Rg3 Kf8 24.Qh7 Qe6+-) 23.Rf1+- Qf1 1-0. onur604 (2320) - barquero (2130), Casual Rapid game, lichess.org, 2021.

4.e3 Bf5 5.Nf3 e6 6.b5 c6 (6...Bd6 7.Be2=+) 7.c4 (7.Be2 Bd6=) 7...dc4 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 Be7 11.0-0 Bd3 12.Bd3 Qd3 13.Nc3 0-0 14.Ne5 Qd6 15.d4 Nbd7 16.f4 (16.bc6 bc6 17.Nc4 Qc7=) 16...Nd5 17.Nd5 (17.Qd3 Rc8=) 17...ed5 (worse 17...Qd5 18.e4 Qd6 19.bc6 bc6 20.Nc4+=) 18.bc6 bc6 19.Qa4 Ne5 20.de5 Qd7 21.Rc1 Rc8 22.Bd4 Qe6 23.f5 Qf5 24.Rc6 h6 (24...Qb1!? 25.Kf2 Rf8=+) 25.Qb5= Rc6 26.Qc6 Qe6 27.Qe6 fe6 28.Kf2 Kf7 29.Kf3 Ba3 30.e4 de4 31.Ke4 h5 32.h3 (32.Be3 Be7=) 32…g6 ½-½. Mely (2220) - njonginjo (2180), ChessWorld.net, 2017.

4.Nf3 Nd7 5.Nh4 Bg6 6.Ng6 hg6 7.c4 Ngf6 8.cd5 Nd5 9.b5 ab5 10.ab5 b6 (10...Ra1!? 11.Ba1 e5=) 11.Ra8+= Qa8 12.Qc2 Qa7 (12...e5 13.e3+=) 13.Qc4 e6 14.g3 Bd6 15.Bg7 Rh5 16.Bb2 Nc5 (16...Nb4 17.Nc3+/-) 17.e4 Ne7 18.Be2 Rh7? (better is 18...Rh3+-) 19.e5 Nc8 20.ed6 Nd6 21.Qc1 Qa2 22.0-0 Qd5 23.d4 Nb3 24.Qc7 Nb5 25.Bb5 Qb5 26.Qc8 Ke7 27.Ba3 Kf6 (27...Nc5 28.dc5 bc5 29.Bc5 Kf6 30.Qd8 Kf5 31.Qd4+-) 28.Qd8 Kg7 (28...Kf5 29.Qg8 Nd4 30.Qh7 Ne2 31.Kg2 Qd5 32.f3 e5+-) 29.Bf8 Kg8 30.Bh6 1–0. Trkn – guest6612, ICC, 2004.

4.Nf3 e6 5.e3 Bb4 6.Bg7 f6 7.Nh4 Nh6 8.Bh8 (worse 8.Bh6 Be4+-) 8...Kf7 (8...Bg4 9.Be2 f5 10.Nf3+-) 9.Qh5 Bg6 (9...Kg8 10.Qh6 Kh8 11.Nf5 ef5+-) 10.Ng6 (10.Ng6 hg6 11.Qh6+-) 1-0. Adlai – Chesspaw, internet, 2022.

4.Nf3 h6 5.e3 Nd7 (5...Nf6 6.Nc3=) 6.Be2 (6.c4 Ngf6 7.Nc3 dc4 8.Bc4 e6=) 6...e6 7.b5 a5 (7...ab5!? 8.ab5 Ra1 9.Ba1 Ngf6=+) 8.c4 dc4 9.0-0 Bd3 (9...Ngf6 10.Na3=) 10.Na3+= Ke7 1-0. DEFFM – GuestNYQX, freechess.org, 2021.

4.e3 e6 5.b5 Bd6 6.c4 c6 7.Nf3 Ne7 8.Be2 0-0 9.0-0 e5 10.d4 e4 11.Nfd2 f5? (11...Qc7 12.h3=) 12.f4?? (better 12.c5 Bc7 13.b6 Bb6 14.cb6 Qb6 15.Ba3+-) 12...ef3 13.Bf3 ab5 14.ab5 Ra1 15.Ba1 cb5 16.cb5 Be6 17.Nc3 Exerts pressure on the isolated pawn 17...Nd7 18.Qb3 Increasing the pressure on the isolated pawn on d5 18...Nb6 19.Bb2 Qd7 20.Ba3 Ra8 21.Bc5?? (better 21.Bd6 Qd6 22.Qc2=) 21...Bc5–+ 22.dc5 Nc4?? (better 22...d4 23.c6 Qd6–+ (23...Bb3?! 24.cd7 dc3 25.Nb3=+)) 23.Nc4+= dc4 24.Qc2 Qd3? (24...Qc7 25.Qc1 Qc5 26.Bb7 Rd8-/+) 25.Rc1?? (better 25.Qd3 cd3 26.Bb7+-) 25...Rc8 (better 25...Qe3!? 26.Kf1 Qc5 27.Bb7 Re8=+) 26.Qd3= cd3 27.c6 (27.Nb1!? Bd5 28.Nd2=) 27...bc6-/+ 28.bc6 Nc6 29.Rd1? (better 29.Nd5 Kf7 30.Nb6=+) 29...Ne5–+ 30.Bd5 Bd5 (30...Rc3?! 31.Be6 Kf8 32.Bf5=+) 31.Nd5 Rd8 (31...Kf7 32.Kf2–+) 32.Ne7 Kf7 (better 32...Kh8!? 33.Nf5 Nc4–+) 33.Nf5-/+ Nc4 Black prepares the advance d2 34.Kf2 Nb2 35.Rd2 Nc4 36.Rd1 Nb2 (better 36...g5=+) 37.Rb1?? (better 37.Rd2=) 37...d2–+ 38.Nd4 White gets strong initiative 38...Rd4! 39.ed4 d1Q 40.Rd1 Nd1 41.Ke2 Nc3 42.Kd3 Nd5 43.Ke4 Nf4?? (43...Ke6 44.Kd3 Nf4 45.Kc4 Ng2–+) 44.Kf4+- Ke6 45.Ke4 Kd6 46.d5 g5 47.g4 h5 (47...Kd7 48.Ke5 Ke7 49.d6 Kd7 50.Kd5+-) 48.gh5 Kc5 49.Ke5 g4 50.d6 g3 51.hg3 Kc6 52.Ke6 (52.Ke6 Kc5 53.d7 Kd4 54.d8Q Ke3 55.Qb6 Ke2 56.h6 Kf3 57.Qb3 Ke2 58.h7 Kd2 59.h8R Ke1 60.Qc2 Kf1 61.Rh1) 1–0. BeepBeepImAJeep (2590) – Clovis99 (2415), lichess.org, 2017.

4.e3 Nh6 5.b5 Nf7 6.c4 e6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Bd6 (9...dc4 10.Bc4 Nd6 11.Be2=) 10.Be2 0-0 11.0-0 c6 12.Nc3 Re8 13.d4 Bc7 14.Qb3 Nd7 15.c5 (15.Rb1 Qe7+-) 15...e5+= 16.Nd5 (better 16.Qa4!? ed4 17.ed4+=) 16...cd5=+ 17.Qd5 Nf8 18.Qd8 Rd8 19.Bc4 Be6 20.Rc1 Bc4 21.Rc4 Ne6 22.g3 (22.b6 Bb8 23.c6 bc6 24.Rc6 Bd6=+) 22...e4 23.Nd2 f5 24.Rc1 (24.b6 Bb8=+) 24...Ba5 (24...Ne5 25.Bc3 Nd3 26.Ra1-/+) 25.Nc4 White prepares b6 25...Bc7 (25...Ra8!?=+) 26.b6= Bb8 27.Na3?? (better 27.Na5 Rd7 28.d5 Rd5 29.Nb7+-) 27...Rd7 28.Nb5 Nfd8 29.Na7 Nc6 (29...Kf7!?-/+) 30.Nc6=+ bc6 31.Bc3 Rb7 32.Ra1 Kf7 33.Kf1 Nd8 34.Ke2 Ke6 35.Bd2 Kd5 36.Kd1 (36.Ra8 g5=+) 36...g5-/+ 37.Kc2 Ne6 38.Kc3 (38.Kb3 g4-/+) 38...h5 (better 38...Nc5!? 39.Ra5 Bd6–+) 39.Kb4=+ g4 40.Ra8 Nc7 41.Ra2 Nb5 42.Bc3 h4 43.Ra5 (43.gh4 Bh2 44.Ra8 Nc3 45.Kc3 Rh7=) 43...Nc3 (43...hg3 44.hg3 Rh7 45.Ra8=+) 44.Kc3= h3 (44...hg3 45.hg3 Rh7 46.Kb4=) 45.Ra2 Bd6?? (45...Re7 46.Ra8 Re8 47.Kb4+=) 46.Ra8 (better 46.Ra7 Bc5 47.Rb7 Bb6 48.Rb6+-) 46...Bc5= 47.dc5 Kc5 48.Re8? (48.Ra5 Kd6=) 48...Rb6 (better 48...Kd5!?–+) 49.Re5-/+ Kd6 50.Rf5 Rb1 51.Rf4 Rh1 52.Rg4 Rh2 53.Rh4 Kd5 (53...c5 54.Rh6 Ke5 55.Rh5 Kf6 56.Kc4=) 54.Rh5 Kd6 55.Kd4 Rh1 (55...c5 56.Rc5 Rf2 57.Rh5+=) 56.Ke4+- c5 57.Rh6 Kc7 58.g4 c4 59.Rh7 (59.g5 Kd7+-) 59...Kc6 60.Kd4?? (better 60.g5+-) 60...h2-/+ 61.Rh6 (61.Rh6 Kb5 62.Ke4-/+). BeepBeepImAJeep (2590) – Clovis99 (2440), lichess.org, 2018.

4.b5 Qd6 5.e3 ab5 6.ab5 Ra1 7.Ba1 Qb6 (7...Bf5 8.Nf3 Nbd7 9.Bd3 Bd3 10.cd3=+) 8.Nf3= e6 9.Be2 Qa7 (9...Nbd7 10.Bd4 Qa5 11.c4=) 10.Bf6 (10.Bd4 Qa5+=) 10...gf6 11.0-0 Bd7 (11...Nd7!?+=) 12.c4+- dc4 13.Bc4 Qa5 14.Nc3 Bb4 15.Ne4 (15.Qb3 c6 16.Ne4 cb5 17.Nf6 Ke7+-) 15...Bb5 (better 15...f5!? 16.Nf6 Ke7+-) 16.Bb5+- (16.Nf6?! Ke7 17.Bb5 Qb5+-) 16...Qb5 17.Nf6 (better 17.Qa1!? Be7 18.Nf6 Bf6 19.Qf6+-) 17...Ke7+= 18.Qa1 Na6? (better 18...Rd8 19.Nh7 Qf5+-) 19.Nd5!+- Qd5 (19...Qd5 20.Qh8 Discovered attack; 19...ed5 20.Qe5 Double attack (20.Qh8 Discovered attack)) 20.Qh8 Qf5 21.d4 Bd6 22.Qc8 Nb4 (22...Qd5 23.Ra1+-) 23.Qb7 Nd3 (23...Qc2+-) 24.e4 Qg6 25.e5 Ba3 (25...Bb4 26.g3 Kf8 27.Rd1+-) 26.Qc7 (better 26.Ra1 Nf4 27.Qc7 Kf8 28.Qd8 Kg7 29.Qf6 Qf6 30.ef6 Kf6 31.Ra3 Kf5+-) 26...Kf8 27.Qd8 Kg7 28.Ra1 Bf8 (28...Bb4+-) 29.Ra8 Bb4 30.Qh8 Kh6 31.Rg8 Qf5 32.Qg7 Kh5 33.g4 Qg4 34.Qg4 Kh6 35.Qh3 (35.Qg5) 1–0. GuestRDKF – GuestMLPB, freechess.org, 2019.

4.e3 c6 5.b5 ab5 6.ab5 Ra1 7.Ba1 cb5 8.Bb5 Bd7 9.c4 Bb5 10.cb5 e6 11.Nf3 Bc5 (11...Bd6 12.Bf6 Qf6 13.0-0=+) 12.Qc2 b6 13.Ne5 Qd6 (13...0-0 14.0-0=) 14.0-0 g5?? (better 14...0-0=) 15.d4+- Bb4 (15...Rf8 16.dc5 Qc5+-) 16.Qc8 Qd8 17.Qb7 (better 17.Qd8 Kd8 18.Nf7 Ke7 19.Nh8 Kf8+-) 17...Nbd7?? (17...0-0 18.Bc3 Bd6 19.Rc1+=) 18.Qc6 (better 18.Nc6 0-0 19.Nd8 Rd8 20.Bc3+-) 18...h5 (18...0-0 19.Rc1+=) 19.Rc1 (better 19.Bc3 Be7 20.Nd2+-) 19...Bc5?? (better 19...0-0+-) 20.dc5+- (20.Rc5?! bc5 21.dc5 0-0 22.Nd7 Nd7+=) 20...bc5 (20...0-0 21.cb6 Nb6+-) 21.Nd7 Qd7 (21...Nd7 22.Bh8 g4 23.e4 de4 24.Rc5+-) 22.Bf6 (better 22.Qa8 Ke7 23.Qh8+-) 22...Rh6 (22...Qc6 23.bc6 0-0 24.Rc5+-) 23.Bg5 (23.Qa8 Qd8 24.Qd8) 23...Rg6 24.Bf4 (24.Qa8 Qd8 25.Qd8) 24...h4 (24...c4+-) 25.Rc5 h3 (25...Qc6 26.Rc6 Kd7 27.Rc7 Kd8 28.Rf7+-) 26.g3 Rg3 27.fg3 e5 28.Be5 Qc6 (28...f5 29.Qg6 Ke7 30.Rc6 Kf8 31.Rc8 Qc8 32.Bd6) 29.Rc6 (29.Rc6 Kd7 30.Rc7 Ke6 31.Bf4 Kf6 32.b6 Kg7 33.b7 Kf6 34.b8Q Kf5 35.Rf7 Kg4 36.Qc8 Kf3 37.Nc3 d4 38.Bg5; 29.bc6 f6 30.c7 Ke7 31.c8Q fe5 32.Rc6 d4 33.Qb7 Ke8 34.Rc8) 1–0. GuestBDTQ – GuestWHSY, freechess.org, 2018.

4.e3 c6 5.b5 cb5 6.ab5 Bd7 (6...Nbd7!?=) 7.Nf3+- e6 8.Ne5 (8.Bd3!?+-) 8...Bd6 9.f4 Be5 (better 9...0-0!?+=) 10.Be5+- 0-0 11.Bd3 (11.Nc3+-) 11...Qb6 (11...Ne4!? 12.Be4 de4+-) 12.Bd4+- Qc7 13.0-0 Ne4 14.Qh5 Be8 15.Be5 (better 15.Be4!? f5 16.Qh4 fe4 17.Nc3+-) 15...Qe7+- 16.Qh3 (16.Qe2 Nd7 17.Bd4 Ndc5 18.ba6 ba6 19.Be4 Ne4 20.Ra6 Ba4+-) 16...Nd7+= 17.ba6 (17.Bd4 Ndf6 18.ba6 ba6+-) 17...ba6 (17...Ne5 18.fe5 ba6 19.Nc3+=) 18.Nc3 (18.Bd4 Ndc5+-) 18...Ne5+= 19.fe5 g6?? (better 19...Bc6+=) 20.Be4+- (20.Ne4?! de4 21.Be4 Rb8+-) 20...de4 21.Ne4 f5 (21...Kg7+-) 22.ef6 Qb7 23.d3 (better 23.Ng5 h5 24.c4+-) 23...Bc6 (23...Qd7+-) 24.Qe6 Kh8 (24...Rf7 25.Nd6 Qd7+-) 25.f7 Be4 26.Qf6 (26.Qe5) 1–0. GuestNBFV – GuestJMPV, freechess.org, 2020.

4.e3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nb8 8.Nf3 c6 9.c4 dc4 (9...e6 10.Bd4+=) 10.Bc4+- 1–0. DEFFM – GuestLWZL, freechess.org, 2019.

4.e3 Bd7 5.c4 (5.Nf3 e6 6.b5 Bd6=) 5...c6 (5...e6 6.Bc3+=) 6.c5 Qc7 (6...a5 7.b5=) 7.Nf3+= Bg4 8.h3 (8.Bf6 ef6 9.d4 a5+=) 8...Bh5 (8...Bf3 9.Qf3 e5 10.Qg3=) 9.Be2 (9.Bf6 gf6 10.d4 e5+=) 9...Nbd7= 10.d4 e6 11.Nbd2 Be7 12.a5 (12.b5 ab5 13.ab5 Ra1 14.Qa1 cb5 15.Qa8 Bd8 16.Bb5 0-0+=) 12...0-0 (12...0-0-0 13.0-0=) 13.Bd3+= Bg6 14.Be2 (14.Bg6 hg6 (worse is 14...fg6 15.Ng5+/-) 15.0-0 Rad8+=) 14...h6 15.0-0 Bh7 16.Nh2 Ne4 17.Ne4 Be4 18.Bd3 Nf6 19.Be2 Bh7 20.Bc3 Ne4 21.Be1 f5 22.f3 Ng3 23.Bg3 Qg3 24.Qe1 Bh4 (24...Qe1!? 25.Rfe1 f4=) 25.Qg3+= Bg3 26.f4 g5 27.Rf3 gf4 (27...Bh2 28.Kh2 Kf7 29.fg5 hg5 30.Bd3+=) 28.Nf1 (28.ef4!? Bh4 29.Re3+/-) 28...Bh4+= 29.g3 (better is 29.ef4 Bf6 30.Rd3+=) 29...fg3-/+ 30.Ng3 Bg6 31.Kh2 Kh7 32.Rg1 Rg8 33.Rf2 Bg5 34.Nf1 (34.Rf3 Rg7-/+) 34...Raf8 35.Bd3 f4 36.Bg6 Rg6 (worse is 36...Kg6 37.h4 fe3 38.Rf8 Rf8 39.hg5 hg5 40.Ne3+=) 37.ef4? (better is 37.Nd2-/+) 37...Rf4 38.Rf4 Bf4 39.Kh1 Rf6 (39...Bc1!? 40.Rg2 Rg2 41.Kg2–+) 40.Nh2 (40.Ng3 Bd2–+) 40...h5 (40...Be3 41.Ng4 Bg1 42.Nf6 Kg6 43.Ne8 Bd4 44.Nd6–+) 41.Nf3 (better is 41.Rd1–+) 41...Be3 42.Rf1 (42.Rg3–+) 42...Kh6 (better is 42...Bd4 43.Kg2 Rg6 44.Kh2 Bc3–+) 43.Kg2-/+ Rg6 44.Kh2 Bf4 45.Kh1 Rg3 46.Ng1 (46.h4 Kg6 47.Ne1 Rh3 48.Kg2 Rh4–+) 46...Be3 (better is 46...Kg5–+) 47.Kh2?? (better is 47.Nf3–+) 47...Rg1 48.Rg1 (48.Rf3 Re1 49.Rf7 Re2 50.Kg3–+) 48...Bg1 (48...Bd4?! 49.Rg8 Bc3 50.Re8-/+) 49.Kg1 Kg5 50.Kg2 (50.Kf1 Kf4 51.Kf2 h4–+) 50...Kf4 51.Kf2 Ke4 (better is 51...h4!? 52.Ke2–+) 52.Kg3 Kd4 53.Kh4 Kc4 54.Kh5 d4 55.Kg4 d3 56.Kf3 Kc3 57.h4 Kc2 0–1. Cerami,Giuseppe (1780) – Sgarito,Lino, 5th Nicolo La Rosa op, 2007.

4.e3 e5 5.Be5 Bb4 6.c3 +=.

4.e3 Bf5 5.b5 a5 6.Nf3= e6 7.Be2 Bd6 8.Nh4 Bg6 9.0-0 0-0 10.c4 Bb1 11.Qb1 Bb4 12.cd5 Nd5 13.Nf3 Bd6 14.Qe4 Nd7 15.Bc4 N7f6 (15...c6 16.d3+=) 16.Bf6+/- Nf6 17.Qb7 Ng4 18.Qe4 Nh6 (better 18...Nf6 19.Qc2 Qd7+-) 19.Be6?? (better 19.d4+-) 19...fe6 20.Qe6 Kh8 21.Nd4 (21.Rfe1 Rf6 22.Qh3 Bb4=) 21...Rf6 22.Qe4 Qf8 23.Nc6 Re8 24.Qc4 Nf5 (24...Nf7 25.Na5 Ne5 26.Qc2+/-) 25.Na5+/- Qe7 26.Nc6 Qd7 27.a5 Rh6 (27...Ne7 28.Ne7 Qe7 29.a6+/-) 28.g3 (28.f4 Ne7+-) 28...Rf8 (28...Ne7 29.f4+/-) 29.f4+- Ng3 (29...Ne7 30.a6+-) 30.hg3 Qg4 (30...Rh1 31.Kg2 Qh3 32.Kf2 Rh2 33.Ke1 Qg3 34.Kd1+-) 31.Rf2 Qg3 32.Rg2 Qh3 33.Qd4 Rg6? (33...Qh1 34.Kf2 Qh4 35.Kf1 Rff6+-) 34.Rg6 hg6 35.Qd5 Qg3 (35...g5 36.Qg5 Qe6 37.a6+-) 36.Qg2 Qh4 37.a6 g5 38.a7 gf4 39.a8Q Ra8 40.Ra8 Kh7 41.Qh1 Qh1 42.Kh1 fe3 43.de3 Kg6 44.Rd8 Be5 (44...Bc5 45.e4 Kf6+-) 45.Ne5 (45.Ne5 Kf5 46.Nc4+-) 1-0. DEFFM – GuestWRSG, freechess.org, 2021.

4.e3 Bf5 5.b5 ab5 6.ab5 Ra1 7.Ba1 e6 8.c4 dc4 9.Nf3 (9.Bc4 Nbd7=+) 9...Bd6 (9...Bd3!?-/+) 10.Bc4=+ 0-0 11.0-0 Nbd7 12.d4 c6 13.Nbd2 cb5 14.Bb5 Qc7 15.Be2 Ne4 16.h3 Nc3 (16...Rb8 17.Ne4 Be4 18.Ng5=) 17.Bc3= Qc3 18.Nc4 Be7 19.Qa1 Qa1 (19...Qc2 20.Ncd2 Rc8 21.Rb1=) 20.Ra1+= Nf6 21.Nce5 Rb8 (21...Bd6 22.g4 Be4 23.Nd2=) 22.Ra7 b5?? (better 22...Bd6+=) 23.Re7+- b4 24.Nc6 (24.Rf7?! b3 25.Ra7 b2+-; 24.Nf7?! b3 25.Nd2 b2+-) 24...b3 (24...Rb6 25.Ra7 h6 26.Ne7 Kf8 27.Nf5 ef5+-) 25.Nb8 b2 26.Nd2 Nd5 (26...b1Q 27.Nb1 Bb1+-) 27.Re8 1–0. BeepBeepImAJeep (2660) – babaika112 (1730), lichess.org, 2016.

4.e3 g6 5.Nf3 Bg7 6.Be2 0-0 7.0-0 Bg4 8.d4 Nbd7 9.Nbd2 e6 10.c4 dc4 11.Nc4 Ne4 (better 11...Nd5!?+=) 12.h3+/- Bf3 13.Bf3 (13.gf3?! Nd6=) 13...Nd6 14.Nd6 cd6 15.Bb7 Rb8 (15...Ra7!? 16.Bc6 Nb8+/-) 16.Ba6+- Rb4 17.Ba3 Rb6 18.Bd3 Qb8 19.a5 Rb3 20.Be2 e5 (20...Rb7 21.a6 Rb6 22.a7 Qa7 23.Bd6 Qa1 24.Qa1 Rd6 25.Rb1+-) 21.Bd6! Qd6 22.Qb3 ed4 23.Rfd1 Nc5 (23...Rb8 24.Qa2+-) 24.Qa3 d3 25.Rac1 Qa6 26.Bf3 (26.Qc5?! de2 27.Rd6 Qa8+-; 26.Rc5?! de2 27.Re1 Rd8+-; 26.Bd3?! Nd3 27.Qd3 Qa5+-) 26...Nd7 (26...Ne6 27.Rd3 Bb2 28.Rc6 (worse 28.Qb2 Qd3 29.Ra1 Qa6+-) 28...Ba3 29.Ra6+-) 27.Rd3 (better 27.Qd3 Qd3 28.Rd3 Ne5+-) 27...Ne5 28.Rb3 Nf3 29.gf3 Ra8 (29...Qf6 30.a6 Qg5 31.Kh2+-) 30.Rb6 Qb6 (30...Qa7 31.Rb5 Qd7 32.Qb3+-) 31.Rc8!! (31.ab6?! Ra3 32.Rc8 Bf8+-) 31...Rc8 32.ab6 Rb8 (32...Be5 33.Qe7 Bb8 34.b7+-) 33.Qc5 1-0. onur604 (2320) - Korea777 (2330), Casual Rapid game, lichess.org, 2021.

4.Nf3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nb4? (7...Na5 8.Ne5=) 8.Bd4?? (8.c3 Bf5 9.cb4 e6+-) 8...e6? (better 8...Bf5 9.d3 Na2+=) 9.c3+- Na2 (9...c5 10.Be5+-) 10.Qa4 Nc1 (10...Nc3 11.Nc3 Ne4 12.Qc2 Nc3 13.Bc3+-) 11.Qc2 c5 (11...Ne2 12.Be2 Bd6 13.0-0+-) 12.bc6 (12.Qc1?! cd4 13.cd4 Bd6=) 1–0. Pereira – Marekt, internet, 2020.

4.Nf3 e6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Bd7 8.e3 c6 9.bc6 bc6 10.d4 Qa5 11.Bc3 Qa7 12.Bd3 Bd6 13.0-0 0-0 14.Nbd2 c5 15.dc5 Bc5 16.Bf6 gf6 17.e4 de4 18.Ne4 Be7 19.Nfd2 f5 20.Ng3 Nc6 21.Qh5 Bf6 22.Nf3 Kg7 23.Ng5 Bg5?? (better 23...h6 24.Nf3 Ne5=) 24.Qg5+- Kh8 25.Qf6 (25.Nh5 Qd4 26.Nf6 Rb8+-) 25...Kg8 26.Nh5 Qd4 27.Qg5 Kh8 28.Nf6 Ne5 (28...Rb8+-) 29.Qh6 (29.Qh6 Qf2 30.Rf2 Nf3 31.Rf3 e5 32.Qf8; 29.Nd7?! Nd7 30.Rd1 Nf6+=) 1–0. toivok (2770) – TwelveTeen (2695), lichess.org, 2018. (=1.a4 a6 2.b4 d5 3.Bb2 Nf6)

4.Bf6 gf6 5.e3 e5 6.c3 Rg8 7.d4 Bf5 8.g3 Nc6 9.b5 ab5 10.Bb5 ed4 (10...Qd6 11.Nf3+=) 11.cd4= Bb4 12.Nd2 ½–½. Jirousek,Jim – Schreber,Daniel Paul, corr or01–010 E–mail, 2001.

4.b5 ab5 5.ab5 Ra1 6.Ba1 e6 7.h3 Bh5 8.g4 Bg6 9.Nf3 Be4 (9...Nf6!?=+) 10.Bg2= Bc2?? (better 10...Nd7=) 11.Qc2+- Nf6 12.0-0 h6 13.Bf6 (better 13.d3+-) 13...Qf6 (13...gf6 14.e4 d4+-) 14.Qc7 Qd8 (14...Nd7 15.Rc1 Be7 16.Nc3+-) 15.Qb7 Bd6 16.d4 (16.Nc3 Qe7 17.Qc8 Qd8 18.Qd8 Kd8+-) 16...0-0 (16...Qd7 17.Qb6+-) 17.Ne5 (17.Rc1 Qd7 18.Qb6 Qd8 19.Qd8 Rd8+-) 17...Be5 18.de5 Qa5 (18...Nd7 19.f4+-) 19.Rc1 Qb4 (19...Qa1 20.Rc8 Qe5 21.b6 Rc8 22.Qc8 Kh7 23.Qc2 Kg8 24.Qc7+-) 20.Rc8 Qb1 (20...h5 21.Rb8 hg4 22.Rf8 Kf8 23.b6 Qb1 24.Bf1+-) 21.Bf1 Nd7 (21...Qb4 22.Qb8 Rc8 23.Qc8 Kh7+-) 22.Qd7 Rc8 23.Qc8 Kh7 24.Qc6 d4 25.b6 Qb2 26.b7 Qc3 27.Qe4 f5 (27...g6 28.b8Q Qa5 29.Qf8 d3 30.Qf7 Kh8 31.Qeg6 de2 32.Qh6) 28.ef6 g6 29.b8Q d3 (29...h5 30.Qbb7 Qc7 31.Qc7 Kh6 32.Qg6 Kg6 33.Qg7) 30.Qeb7 Qc7 31.Q7c7 1–0. GuestFXQQ – GuestVYTX, freechess.org, 2020.

4.b5 c6 5.h3 Bh5 6.c4 (6.Nf3 ab5 7.ab5 Ra1 8.Ba1 Nf6=) 6...d4 (6...dc4!? 7.Nc3 Nf6=+) 7.Qb3 (7.g4 Bg6 8.Nf3 c5+=) 7...c5 (7...ab5 8.cb5 e5 9.e3=) 8.Nf3+= Bf3 (8...Nf6!?+=) 9.Qf3+- Qc7 10.e3 e5 11.Bd3 Nf6 12.0-0 Nbd7 (12...Be7+-) 13.ed4 (13.Na3!?+-) 13...cd4+= 14.Na3 Bd6? (better 14...Bb4!? 15.ba6 Ra6+=) 15.ba6+- ba6?? (better 15...Ra6 16.Nb5 Qb8 17.Nd6 Qd6+-) 16.Qa8+- Nb8 17.f4! 0-0 (17...ef4 18.Bd4 Deflection) 18.fe5 (18.c5 Bc5 19.fe5 Nc6 20.Qa6 Ne5+-) 18...Be5 19.Nc2 (better 19.Qf3 Rd8+-) 19...Nc6 20.Qa6 Nb4 1–0. GuestTCPK – guestbernardo, freechess.org, 2020.

4.Nf3 Nf6 5.e3 Nbd7 6.Be2 e6 7.b5 a5 8.0-0 b6 (8...Bd6 9.h3 Bf3 10.Bf3=) 9.c4 Nc5 10.d4 Nce4 11.Ne5 White launches an attack 11...Bf5 12.Nc6 Qd7 13.Nd2 Bd6 14.Ne4 Ne4 15.f3 Ng5? (15...Nf6 16.Rc1+-) 16.Bd3 (16.h4 Nh3 17.Kh1 g5+-) 16...g6? (16...Bd3 17.Qd3 f5 18.cd5 ed5 19.Qb3+-) 17.Re1 (better 17.c5 Be7 18.h4 Nf3 19.Qf3 Bh4+-) 17...f6? (better 17...Bd3 18.Qd3 dc4 19.Qc4 f6+-) 18.e4+- Bh3 19.gh3 Nh3 20.Kh1?? (20.Kf1 0-0+-) 20...e5?? (better 20...Nf2 21.Kg2 Nd1 22.Rad1 dc4 23.Bc4 Bb4–+) 21.Qd2 Bb4 (21...Ng5 22.Qg2 (22.cd5?! Nf3 23.Qg2 Ne1 24.Re1 ed4+-) 22...de4 23.de5+-) 22.Nb4 ab4 23.ed5 0-0 24.Re4 (24.de5!? fe5 25.Re3 Ra5+-) 24...Ng5 25.Re3 Qh3 (25...ed4 26.Bd4 Qd6 27.Be2+-) 26.Qg2 (26.f4 Nf3 27.de5 Nd2 28.Rh3 fe5 29.Be5 Rfe8+-) 26...Qh5 (26...ed4 27.Qh3 Nh3 28.Bd4+-) 27.de5 fe5 28.Re5 Qf3 29.Qf3 (worse 29.Rg5 Qd3 30.Rg3 Qf5+-) 29...Nf3 (29...Rf3 30.Bg6! Nf7 31.Rf5 Rf5 32.Bf5+-) 30.Re7 Nd2 (30...Rf4 31.Rf1 Ra4 32.Rg7 Kf8 33.Rh7 g5+-) 31.Rg7 Kh8 32.Rg6 Rf6 33.Bf6 1–0. BeepBeepImAJeep – bernardgroseille (1775), lichess.org, 2018.

4.h3 Bf5 5.b5=+.

4.h3 Bh5 5.b5 g6?? (better 5...Nf6=) 6.Bh8+- g5 (6...f5 7.g4! fg4 8.Nc3+-) 7.Bb2 (7.Nc3 Nf6 8.h4 g4 9.Bf6 ef6+-) 7...Nf6 8.Nf3 h6 9.g4 Bg6 10.Bg2 ab5 11.ab5 Nbd7 12.Ra8 Qa8 13.0-0 e6 (13...c5 14.d3+-) 14.d3 h5 (14...Bc5 15.Nbd2 h5 16.Nb3+-) 15.gh5 Nh5 16.e3 c6 (16...Be7 17.Nc3+-) 17.bc6 bc6 18.Ng5 Qb8 (18...Be7 19.Nf3+-) 19.Bc3 Bh6 (19...Be7 20.h4+-) 20.Nf3 e5 (20...Bg7 21.Nh4+-) 21.Nbd2 Kf8 (21...c5 22.Nh4 Nhf6 23.Qa1+-) 22.Qa1 Qd6 (22...Bg7 23.Rb1 Qe8 24.Nh4+-) 23.Qa8 (23.Ne5 f5 24.Qa5 Bg5+-) 23...Ke7 (23...Kg7 24.Qd8 Qe6 25.Ra1+-) 24.Qb7 Ke6 (24...Kf8 25.Ra1 Kg7 26.Ne5 Ne5 27.Nf3+-) 25.Ra1 Nc5 26.Qc8 (26.Qc8 Qd7 27.Qa8+-) 1–0. Okeefe,Michael (2190) – Kohler,Dennis, VD–2010-0-00003, 2010.

4.h3 Bh5 5.g4 Bg6 6.Bg2 h5 (6...e6 7.h4 h5 8.g5=+) 7.g5 (7.Nf3 e6=) 7...h4 (7...e5 8.h4=+) 8.Nf3 e6 9.0-0 (9.Qc1 Be4 10.Rg1 Rh7=) 9...Be4-/+ 10.b5 (10.Kh1 Bf3 11.Bf3 Qg5-/+) 10...ab5 (10...Bf3 11.Bf3 Qg5 12.Kh1-/+) 11.g6 (11.ab5 Ra1 12.Ba1 Bf3 13.Bf3 Qg5 14.Bg2 Bd6-/+) 11...fg6 (better 11...Bf3!? 12.Bf3 Ra4 13.Ra4 ba4-/+) 12.ab5=+ Ra1 13.Ba1 Bf3 14.Bf3 Qg5 15.Bg4 Nf6 (better 15...Bd6!? 16.e3 Qe7=) 16.f4+= Qh6 17.Be6 Bd6 18.e3 Ne4? (better 18...g5 19.f5 g4 20.Bf6 gh3 21.Bd5 c6 22.bc6 bc6 23.Bc6 Nc6+=) 19.Bd5+- Ng3 20.Rf2 Nf5? (better 20...c6 21.Bc4 Kd8+-) 21.Bb7 Nd7 22.Bc6 (better 22.Rg2 0-0+-) 22...g5 (22...Ne7+-) 23.Qg4 gf4 (23...Qe6 24.e4 Bc5 25.Qf5 Qf5 26.ef5 Bf2 27.Kf2 Rf8+-) 24.Qf5 Qf6 25.Qd7 Kf8 26.Qe8 1–0. GuestNZJN – archjos, freechess.org, 2019.

4.b5 ab5 5.ab5 Ra1 6.Ba1 d4 (6...Nf6!?=) 7.Nf3+= Nf6 (7...c5 8.e3 Qa5 9.Bb2 de3 10.fe3+=) 8.Bd4+- Nbd7 (8...Bg4 9.e3+-) 9.c4 (9.Nc3+-) 9...e5 (9...e6!?+-) 10.Ne5+- (10.Be5?! Ne5 11.Ne5 Qd4+=) 10...Ne5 11.Be5 Qe7 (11...Bc5 12.e3+-) 12.Bd4 Ne4 (12...Qe6 13.e3+-) 13.e3 Qg5 (13...c5 14.bc6! bc6 15.Nc3+-) 14.Qf3 Qg6 (14...Nc5 15.Be2+-) 15.Bd3 f5 (15...Ng5 16.Bg6 Nf3 17.gf3 fg6 18.Nc3+-) 16.Nc3 Nc3 17.Bc3 Bd6 18.0-0 0-0 (18...b6 19.Qc6 Kf7 20.Be2+-) 19.c5! Bc5 (19...Be7+-) 20.Qd5 Be6 21.Qc5 c6 (21...Rd8 22.Bc4 Rd7 23.Ra1+-) 22.bc6 bc6 23.Qc6 Rc8 (23...Qf7 24.Ra1+-) 24.Qd6 (24.Qb6 Kh7+-) 24...Re8 (24...Qe8 25.Bb5! Qf7 26.Rb1+-) 25.Bb5 Rf8 26.Bb4 (26.Rb1 Bf7 27.Qg6 Bg6+-) 26...Qf7 (26...Ra8 27.Bd7 Bf7 28.Qe5+-) 27.Qf8 (27.Qf8 Qf8 28.Bf8 Kf8 29.Rc1+-) 1–0. Anonymous – Anonymous, lichess.org, 2020.

4.e3 e5 5.b5 (5.Be5 Nc6 6.Bc3 Nb4=) 5...ab5 (5...Bd6 6.Nf3 Nd7 7.Be2=+) 6.ab5 (6.Be5 ba4 7.Bb5 Nd7=+) 6...Ra1 7.Ba1 f6 (7...Bd6!?=+) 8.Qh5+= Ke7 9.d4 c5 (9...e4!?+=) 10.de5+- (worse 10.dc5 Nd7+=) 10...Qa5 (10...Nd7 11.ef6 Ngf6 12.Qd1+-) 11.Bc3+- Qa2 12.Qd1 fe5 (12...Be6 13.Nf3+-) 13.Be5 Bf5? (better 13...Nd7 14.Nc3 Qa5 15.Qd5 Qa1 16.Ke2 Qc1+-) 14.Nc3 Qc2 (14...Qa5 15.Qd5 (15.Bb8?! Qc3 16.Qd2 Qa1 17.Ke2 Nf6=) 15...Nd7 16.Nf3+-) 15.Qc2 (15.Bb8 Qc3 16.Qd2 Qd2 17.Kd2 c4=+) 15...Bc2 16.Bb8 Nf6 17.Nf3 (better 17.Nge2+-) 17...Nd7 (17...Ke6+-) 18.Nd5 Ke6 19.Bc4 Bh7 (19...Nb8 20.Nb4 Kf6 21.Nc2+-) 20.Nf4 Kf5 (20...Ke7 21.Ne5 Ne5 22.Be5 h5+-) 21.Be6 Kf6 22.Bd7 Bd6 (22...Be4 23.Nd2 Bf5 24.Bf5 Kf5 25.e4 Kf6+-) 23.Bd6 c4 24.Nd5 Kf7 (24...Kg6 25.Ne5 Kh5 26.Nf4 Kg5 27.Be7) 25.Ne5 Kg8 26.Be6 1–0. DEFFM – GuestVFWF, freechess.org, 2018.

4.e3 e6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Bc5?? 8.Bg7+- Rh7 9.Bb2 Bd7 (9...Nf6!?+-) 10.Nf3 (10.c4 Nf6+-) 10...Bd6 (10...Nf6 11.c4 Rg7 12.Nc3 dc4 13.g3+-) 11.Ne5 (better 11.Bd3 f5+-) 11...Be5? (11...h5+-) 12.Be5 c6 (12...Ne7 13.Qf3 Ng6 14.Bf6+-) 13.Nc3 (13.Qg4 Ne7 14.Qg3 f6 15.Bb8 Kf7+-) 13...f5 (13...cb5 14.Qh5 b4+-) 14.Qh5 Ke7 (14...Rf7 15.Qg6 Ne7 16.Qh6 cb5 17.Be2+-) 15.Qh4 Ke8 16.Qh5 (16.Qf4 cb5 17.Bb8 Nf6+-) 16...Kf8?? (16...Ke7 17.Qg6 Rf7+-) 17.Qg6+- Rf7 18.Be2 (better 18.Qg3!? f4 19.Bf4 Rf4 20.Qf4 Ke7+-) 18...cb5 (18...Be8 19.0-0 (worse 19.Qe6 Nd7+-) 19...cb5 20.Qe6+-) 19.Nb5 (19.Bd6 Ne7 20.Qh6 Kg8+-) 19...Nc6 (19...Bb5 20.Bb5 Nf6+-) 20.Bd6 Nge7 (20...Nce7 21.Nc7 Rf6 22.Qg3+-) 21.Qh6 (21.Nc7 Rg7 22.Qh6 Kg8 23.Ne6 Be6 24.Qe6 Kh7+-) 21...Rg7 (21...Kg8 22.0-0+-) 22.Bh5 (better 22.Bc7 Ng8 23.Qg7 Kg7 24.Bd8 Nd8 25.Nd6+-) 22...Be8 (22...Kg8 23.0-0 Rh7 24.Qg5 Rg7+-) 23.Qh8 Rg8 24.Qf6 (24.Qf6 Bf7 25.Qf7) 1–0. GuestZRPT – kalitt, freechess.org, 2019.

4.Nf3 e6 5.b5 a5 (5...Nf6 6.e3=) 6.e3 Nf6 7.c4 dc4 (7...Bb4 8.Be2=) 8.Bc4+= Be7 9.0-0 0-0 10.d4 b6 11.Nbd2 Bb7 12.Bd3 Nbd7 13.e4 Nh7 (13...Nh5 14.Qb3+=) 14.Qc2 (14.Rc1 Rc8+-) 14...Ng5 (14...Rc8 15.Nc4+=) 15.Ng5+- Bg5 16.f4 Be7 17.Rac1 (17.f5 ef5 18.Rf5 Rc8+-) 17...Rc8+= 18.e5. GuestRSYJ – GuestLYTV, freechess.org, 2017.

4.a3 Qd6 5.Nd2 (5.Nf3 Nf6 6.Nbd2 e5 7.c4 d4 8.Qa4 Be7 9.c5 Qd5 10.g3; 5.Nc3 Nf6 6.Nf3 g6 7.Qd2 Bg7 8.e3 0-0 9.Be2 e5 10.0-0; 5.g3 Nf6 6.Nf3 g6 7.Nbd2 Bg7 8.e4 Qd7 9.Bg2 0-0 10.e5) 5...Nf6 6.Ngf3 Bf5 7.c4 e6 8.Qa4 Qd7 9.cd5 ed5 10.b5.

4.a3 e5 5.g3 Be6 6.Bg2 Nf6 7.e4 de4 8.de4 Qd1 9.Kd1 Bd6 10.Nd2 0-0 11.Ngf3 Rad8 12.Ke2 Ne7?? (12...Rd7 13.Rhd1 Rfd8 14.c4=) 13.Rhd1 (13.Ne5!? Ne8 14.Nec4+/-) 13...Bg4 (better is 13...Ng6!?+=) 14.h3+= Bh5 15.g4 Bg6 16.Ne5 (16.Be5?! Ne4 17.Ne4 Be4 18.Bd6 Rd6=) 16...Be5 17.Be5 Ne8 18.f3 f6 19.Bh2 Bf7 20.Nf1 Bc4 21.Kf2 Nd6 22.Ne3 Bb5 23.Rd2?? (better is 23.a4 Bd7 24.c4+-) 23...Ne4!–+ 24.fe4 Rd2 25.Kf3 Rfd8 (25...Ng6!? 26.Bc7 Rc8 27.Bg3 Be2 28.Kf2–+) 26.Bc7-/+ R8d7 27.Bf4 Nc6 28.Kg3? g5–+ 0–1. Jokmin,Alex – Venturas,Bob, RN–2010-0-00307, 2010.

4.a3 e6 5.Nf3 (5.Nd2 Nf6 6.Ngf3 Be7 7.e4 0-0 8.Be2 de4 9.Ne4 Nd5 10.0-0) 5...Nf6 6.Nbd2 h6 7.e4 Be7 8.e5 Nd7 9.Be2 f6 10.ef6.

4.a3 Bf5 5.Nf3 (5.Nd2 Nf6 6.Ngf3 e6 7.g3 Be7 8.Bg2 0-0 9.0-0 Qd6 10.Qe1; 5.h3 e6 6.Nf3 Nf6 7.Nbd2 Bd6 8.g4 Bg6 9.Nb3 0-0 10.Qd2; 5.g3 Nf6 6.Nf3 g6 7.Bg2 Bg7 8.Nbd2 0-0 9.0-0 Qd6 10.c4; 5.Nc3 Nf6 6.Nf3 e6 7.e3 Be7 8.d4 0-0 9.Bd3 Ne4 10.0-0) 5...Nf6 6.g3 e6 7.Bg2 Bd6 8.0-0 0-0 9.Nbd2 h6 10.c4.

4.a3 Nf6 5.Nf3 (5.Nd2 g6 6.g3 Bg4 7.Ngf3 Bg7 8.Bg2 0-0 9.0-0 Qd6 10.c4) 5...g6 6.g3 Bh6 7.Nbd2 0-0 8.Bg2 Bf5 9.c4 Qd7 10.cd5.

4.a3 h6 5.Nd2 e5 6.e4 d4 7.c3 b5 (7...dc3!? 8.Bc3 Bd6=) 8.cd4= Nd4 9.Ngf3 Nf3 (9...Bg4 10.Qc1 Bf3 11.Bd4 Qd4 12.Nf3+=) 10.Nf3+- Bd6 (10...f6 11.d4+-) 11.Ne5 Qf6 (11...Ne7 12.Nf7! Kf7 13.Qf3 Kg8 14.e5+-) 12.Nc4+- Qg6 13.Nd6 cd6 14.Qf3 Be6 15.Be2 (15.a4 Rc8+-) 15…Rc8+-. Jokmin,Alex – Venturas,Bob, SN–2010-0-00280, 2010.

4.a3 h6 5.Nd2 e5 6.Ngf3 Bd6=.

4.a3 h6 5.Nd2 Nf6 6.Ngf3 Bf5 7.c4 e6 8.Qa4 dc4 9.e4 Bg6 10.Ne5.

4.a3 h6 5.Nf3 Nf6 6.Nbd2 Bf5 7.Nb3 e6 8.Nbd4 Nd4 9.Nd4 Bd6 10.g3.

4.a3 h6 5.g3 e5 6.Bg2 Nf6 7.Nf3 Bd6 8.0-0 d4 9.e3 de3 10.fe3 0-0 11.Nbd2 Bg4 12.Qe1 Qd7 13.Nc4 Now all is on e5 13...b5?? (13...Rae8 14.Nd6 cd6 15.c4=) 14.Nd6?? (better is 14.Nfe5 Ne5 15.Ne5 (15.Be5?! bc4 16.Bf6 gf6=) 15...Be5 16.Be5+-) 14...cd6= 15.Nd2 Rac8 16.c4 bc4 17.Nc4 Rb8 18.Rc1 Rfc8 19.d4 ed4 20.ed4 Re8 21.Qd2 Re2 22.Qc3 Bh3 23.Rf2 Rbe8?? 24.Re2+- Re2 25.Rc2?? Qe8?? 26.Re2+- Qe2 27.Bh3 Ne4 28.Qe3 Qd1 29.Bf1 d5 30.Ne5 Ne7 31.Qc1 Qf3 32.Nf3 0–1. Jokmin,Alex – Venturas,Bob, RN–2010-0-00323, 2010.

4.a3 h6 5.g3 Nf6 6.Nf3 Bg4 7.Bg2 e6 8.0-0 Be7 9.Nd4 0-0 10.h3.

4.c3 A) 4...e5 5.Nf3 (5.Nd2 Nf6 6.Ngf3 Be7 7.e4 0-0 8.Be2 Nh5 9.0-0 Nf4 10.g3; 5.g3 Nf6 6.Bg2 Bd6 7.Nf3 0-0 8.0-0 h6 9.Nbd2 Qe7 10.e4; 5.e4 de4 6.de4 Qd1 7.Kd1 Nf6 8.Nd2 Be6 9.Kc2 Ng4 10.Nh3) 5...Nf6 6.Nbd2 Be7 7.e4 0-0 8.Be2 Nh5 9.0-0 Nf4 10.g3; B) 4...g6 5.Nf3 (5.Nd2 Nf6 6.Ngf3 Bg7 7.g3 0-0 8.Bg2 Qd6 9.0-0 Bg4 10.a4; 5.g3 Bg7 6.Bg2 Nh6 7.Qc2 0-0 8.Nf3 Ng4 9.0-0 Qd6 10.Nbd2) 5...Nf6 6.Nbd2 Qd6 7.g3 Bh6 8.Bg2 0-0 9.0-0 Bg4 10.Qc2; C) 4...Nf6 5.Nf3 (5.Nd2 e5 6.Ngf3 Be7 7.e4 0-0 8.Be2 Nh5 9.0-0 Nf4 10.g3; 5.g3 e5 6.Bg2 Be7 7.Nf3 0-0 8.0-0 Bg4 9.Nbd2 g6 10.h3) 5...e5 6.Nbd2 Bd6 7.e4 0-0 8.Be2 Be6 9.0-0 h6 10.h3.

4.Nd2 A) 4...Nf6 5.Ngf3 (5.c4 Nb4 6.Ngf3 c5 7.g3 e6 8.Ne5 Bd6 9.Bg2 0-0 10.0-0) 5...Nb4 6.g3 e6 7.Bg2 Be7 8.0-0 0-0 9.Ne5 Nd7 10.Nef3; B) 4...e6 5.a3 (5.g3 Nf6 6.a3 Bd6 7.Ngf3 0-0 8.Bg2 Bd7 9.0-0 Qe7 10.e4; 5.Ngf3 Nb4 6.g3 Nf6 7.Bg2 Be7 8.0-0 0-0 9.c4 b5 10.cd5; 5.c3 Nf6 6.Ngf3 Be7 7.g3 0-0 8.Bg2 e5 9.0-0 Bg4 10.h3; 5.e4 Nb4 6.Be2 Nf6 7.e5 Nd7 8.Ngf3 Nc5 9.a3 Nc6 10.a4) 5...Nf6 6.Ngf3 Be7 7.e4 0-0 8.Be2 h6 9.0-0 Re8 10.e5; C) 4...Nb4 5.Ngf3 (5.a3 Nc6 6.Ngf3 Nf6 7.e4 g6 8.e5 Nh5 9.g3 Bg7 10.Bg2; 5.g3 Nf6 6.Ngf3 e6 7.Bg2 Bd6 8.e4 Be7 9.0-0 0-0 10.Ne5; 5.c4 Nf6 6.Qa4 Nc6 7.Ngf3 dc4 8.dc4 e6 9.g3 Bb4 10.Qc2 ; 5.e3 Nf6 6.Ngf3 g6 7.Rb1 a5 8.Be2 Bh6 9.h3 0-0 10.0-0) 5...Nf6 6.g3 g6 7.c4 Bg7 8.Qb3 c5 9.a3 dc4 10.Nc4.

4.Nf3 A) 4...e6 5.c3 (5.a3 Nf6 6.Nbd2 Bd7 7.e4 Be7 8.Be2 0-0 9.0-0 h6 10.c4; 5.Nbd2 Nb4 6.g3 Nf6 7.Bg2 Bd6 8.e4 Be7 9.0-0 0-0 10.Ne5) 5...Nf6 6.Nbd2 Be7 7.g3 0-0 8.Bg2 Qd6 9.0-0 Bd7 10.e4; B) 4...Nb4 5.g3 (5.c4 Nf6 6.Qa4 Nc6 7.Nbd2 e6 8.g3 Bd7 9.Qb3 b5 10.cd5; 5.a3 Nc6 6.g3 Nf6 7.Bg2 g6 8.Nbd2 Bg7 9.c4 0-0 10.0-0) 5...Nf6 6.Bg2 e6 7.Nbd2 Be7 8.0-0 0-0 9.Nb3 c5 10.Qd2; C) 4...Qd6 5.a3 (5.c3 Nf6 6.Nbd2 g6 7.g3 Bg7 8.Bg2 0-0 9.0-0 Bg4 10.Qb3; 5.Nbd2 Qb4 6.Rb1 Qa5 7.g3 Nf6 8.Bg2 g6 9.0-0 Bh6 10.c4) 5...Nf6 6.Nbd2 g6 7.c4 Bg7 8.e4 de4 9.Ne4 Qd8 10.Be2; D) 4...Nf6 5.a3 (5.Nbd2 Nb4 6.c4 e6 7.cd5 ed5 8.a3 Nc6 9.e4 de4 10.de4) 5...g6 6.Nc3 d4 7.Na4 Bg7 8.g3 0-0 9.Bg2 Qd6 10.0-0.

4.g3 A) 4...e5 5.a3 Nf6 6.Bg2 Be6 7.Nf3 Bd6 8.Nbd2 0-0 9.0-0 h6 10.c4; B) 4...Bf5 5.Nf3 (5.Bg2 e5 6.a3 Nf6 7.Nf3 Bd6 8.Nbd2 0-0 9.0-0 Re8 10.c4; 5.a3 Nf6 6.Nf3 g6 7.Bg2 Bh6 8.Nd4 Qd6 9.Nc6 bc6 10.Nd2; 5.Nd2 Nf6 6.a3 g6 7.Bh3 Bh3 8.Nh3 Bh6 9.Nf3 0-0 10.0-0; 5.c3 Nf6 6.Nd2 e5 7.Bg2 Be7 8.Ngf3 0-0 9.0-0 Qd6 10.Qc2) 5...Nf6 6.Bg2 e6 7.a3 Bd6 8.0-0 0-0 9.Nbd2 h6 10.c4; C) 4...Nf6 5.Nf3 (5.Nd2 e5 6.a3 Be7 7.Ngf3 Qd6 8.c4 d4 9.Bg2 0-0 10.0-0; 5.a3 g6 6.Nf3 Bg7 7.Bg2 0-0 8.0-0 Qd6 9.Nbd2 Bg4 10.c4; 5.Bg2 Qd6 6.a3 g6 7.Nf3 Bg7 8.0-0 0-0 9.Nbd2 Be6 10.c4; 5.c3 e5 6.Nf3 Bf5 7.Bg2 e4 8.Nh4 Bg4 9.Qd2 ed3 10.Qd3) 5...e5 6.a3 Bd6 7.Bg2 0-0 8.0-0 h6 9.Nbd2 Re8 10.c4.

3.d4 Bf5 4.e3 e6 5.a3 Nf6 6.Nf3 Nbd7 7.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.d4).

3.d4 Nf6 4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.d4).

3.e3 a6 (--> 2…a6 3.e3 c6).

3.e3 a6 4.a4 e6 5.b5 (--> 1.b4 d5 2.Bb2 e6 3.b5 a6 4.a4 c6 5.e3).

3.e3 Qd6 4.a3 e5 (---> 1.b4 d5 2.Bb2 Qd6 3.a3 e5 4.e3 c6).

3.e3 e5 4.a3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.e3 c6).

3.e3 h6 4.Nf3 Bf5 (--> 1.b4 c6 2.Bb2 d5 3.e3 Bf5 4.Nf3 h6).

3.Nf3 a5 4.a3 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.e3 Qb6 8.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.Nf3 Nf6 8.e3).

3.Nf3 Qb6 4.a3 a5 5.c3 (--> 1.b4 c6 2.Bb2 a5 3.c3 Qb6 4.a3 d5 5.Nf3).

3.Nf3 Bg4 4.a3 Nf6 5.e3 e6 6.Be2 Bd6 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Bd6).

3.Nf3 Bg4 4.e3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4).

3.g3 Nf6 4.Bg2 g6 5.Nf3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 d5 5.Bg2 c6).

(--> 1.b4 c6 2.Bb2 a5 3.a3 d5).

4.e3 ab4 5.ab4 Ra1 6.Ba1 Qb6 7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.e3).

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 e6 4.a3).

4.e3 f5 5.Nf3 Nf6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 c6).

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Bf5 4.a3).

4.e3 e6 5.d4 Nf6 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.d4 e6 6.a3).

4.e3 Nbd7 5.c4 e5 6.cd5 cd5 7.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

4.e3 Nbd7 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a3).

4.e3 Bf5 5.Nf3 e6 6.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3).

4.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.Nf3 Nf6 4.a3).

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 e6 4.a4).

4.e3 Nf6 5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3).

4.e3 Nf6 5.b5 Be7 6.Nf3 0-0 7.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c6 7.a4).

4.b5 Bf5 5.e3 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.a4 Bf5 5.b5).

4.e3 g6 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.a4 g6).

4.a3 ab4 5.ab4 Ra1 6.Ba1 Qb6 7.c3 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.e3).

4.b5 Bf5 5.a4 (--> 1.b4 a5 2.b5 c6 3.a4 d5 4.Bb2 Bf5 5.e3).

4.b5 Nf6 5.a4 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 a5).

4.a3 a5 5.c3 (--> 1.b4 c6 2.Bb2 a5 3.c3 Qb6 4.a3 d5 5.e3).

4.a3 a5 5.c3 ab4 6.ab4 Ra1 7.Ba1 (--> 1.b4 c6 2.Bb2 a5 3.a3 ab4 4.ab4 Ra1 5.Ba1 Qb6 6.c3 d5 7.e3).

4.Nf3 Nd7 (--> 1.b4 c6 2.Bb2 d5 3.Nf3 Nd7 4.e3 Qc7).

4.Nf3 Nd7 5.c4 Ngf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Qc7 5.c4 Nbd7).

4.a4 Ngf6 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a4).

4.c4 e5 (--> 1.b4 c6 2.c4 d5 3.e3 e5 4.Bb2 Nd7).

4.c4 e5 5.a3 Bd6 6.cd5 cd5 7.Nf3 Ngf6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

4.c4 e5 5.a3 Ngf6 6.cd5 cd5 7.Nf3 Bd6 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

4.c4 e5 5.cd5 cd5 6.a3 Ngf6 7.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

4.c4 e6 5.b5 Ngf6=+ 6.a4 Be7 7.Nf3 0-0 8.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

4.c4 e6 5.Nf3 Ngf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.c4 e6).

4.c4 Ngf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Nbd7).

4.c4 Ngf6 5.Nc3 e6 6.a3 Be7 7.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.Nc3 Nbd7).

4.c4 Ngf6 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.c4).

4.c4 Ngf6 5.Nf3 e6 6.a3 Bd6 7.cd5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6 7.cd5).

4.d4 Ngf6 5.Nd2 e6 6.a3 Be7 7.c4 0-0 8.Ngf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Nbd7 8.Nbd2).

4.Nf3 Ngf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7).

4.Nf3 Ngf6 5.c4 e6 6.a3 Be7 7.Nc3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.Nc3 Nbd7).

4.Nf3 Ngf6 5.c4 e6 6.b5 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 c6).

4.a3 Nf6 5.c4 Be7 6.Nf3 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 Be7 6.c4).

4.a3 Nf6 5.Nf3 Bd6 6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

4.a4 Nf6 5.b5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3).

4.c4 (--> 1.b4 c6 2.c4 d5 3.e3 e6 4.Bb2).

4.c4 f5 5.Nf3 Nf6 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 d5 5.e3 c6 6.Nf3).

4.c4 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6).

4.c4 Nf6 5.b5 Be7 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 c6).

4.Nf3 Bd6 5.a3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 Bd6).

4.Nf3 f5 5.a3 Nf6 6.c4 Bd6 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.a3 d5 5.Nf3 Bd6 6.c4 c6).

4.Nf3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6).

4.Nf3 Nf6 5.a3 Nbd7 6.c4 Bd6 7.d4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6 7.d4).

4.Nf3 Nf6 5.a3 Be7 6.c4 0-0 7.Nc3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.Nc3 Nbd7).

4.Nf3 Nf6 5.b5 Bd6 6.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Bd6 6.Nf3).

4.Nf3 Nf6 5.Be2 Be7 6.a3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.Be2 c6).

4.a4 a5 5.b5 (--> 1.b4 a5 2.b5 c6 3.a4 d5 4.Bb2 Bf5 5.e3).

4.c4 dc4 5.Bc4 e6 6.Nf3 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 c6).

4.c4 e6 5.a3 Nd7 6.Nf3 Ngf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7).

4.c4 e6 5.a3 Nf6 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3).

4.c4 e6 5.c5 Nf6 6.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5).

4.c4 e6 5.Nf3 dc4 6.Bc4 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 c6).

4.c4 e6 5.Nf3 Nd7 6.Be2 Ngf6 7.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.Be2).

4.c4 e6 5.Nf3 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.c4 e6 5.Nf3 Nf6 6.b5 dc4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.b5 dc4).

4.c4 e6 5.Nf3 Nf6 6.c5 Be7 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5 Nbd7 7.Be2 Be7).

4.c4 Nf6 5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.c4).

4.c4 Nf6 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.d4 Nd7 5.Nf3 e6 6.a3 Ngf6 7.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.d4).

4.Nf3 Nd7 5.a3 Ngf6 6.c4 e6 7.Nc3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.Nc3).

4.Nf3 Nd7 5.c4 e6 6.a3 Ngf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7).

4.Nf3 Nd7 5.c4 e6 6.b5 Ngf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.b5 Nbd7).

4.Nf3 Nd7 5.c4 Ngf6 6.Nc3 e6 7.a3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.Nc3).

4.Nf3 Nd7 5.Be2 Ngf6 6.c4 e6 7.c5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.c5 Nbd7 7.Be2).

4.Nf3 e6 5.a3 Nf6 6.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3).

4.Nf3 e6 5.a3 Nf6 6.d4 Nbd7 7.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.d4).

4.Nf3 e6 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Bf5 4.c4 e6 5.Nf3).

4.Nf3 e6 5.c4 dc4 6.Bc4 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 c6).

4.Nf3 e6 5.c4 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.Nf3 e6 5.c4 Nf6 6.a3 Nbd7 7.d4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3 Nbd7 7.d4).

4.Nf3 e6 5.Be2 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.Be2 e6).

4.Nf3 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6).

4.c4 e5 5.b5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 c6 5.c4).

4.Bd3 e5 5.a3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 c6 5.Bd3).

4.Nf3 e5 5.a3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 c6 5.Nf3).

(--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6).

4.a3 Nbd7 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a3).

4.a3 e6 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 e6 5.a3).

4.a3 e6 5.c4 a5 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a5 5.b5 c6 6.c4).

4.a3 Bg4 5.Nf3 e6 6.Be2 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3).

4.a4 Nbd7 5.Nf3 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.a4).

4.a4 e6 5.b5 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4)

4.a4 Bf5 5.Nf3 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6 5.a4).

4.a4 g6 5.Nf3 Bg7 6.c4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.a4 d5).

4.c4 dc4 5.Bc4 Bf5 6.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 dc4 6.Bc4 c6).

4.c4 Nbd7 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.c4).

4.c4 e6 5.a3 Be7 6.Nf3 0-0 7.d4 Ne4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4 Ne4).

4.c4 e6 5.a3 Be7 6.Nf3 Nbd7 7.Nc3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.Nc3 Nbd7).

4.c4 e6 5.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4).

4.c4 e6 5.b5 Bd6 6.Nf3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c6).

4.c4 e6 5.b5 Bd6 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 c6).

4.c4 e6 5.b5 Be7 6.a4 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

4.c4 e6 5.cd5 cd5 6.b5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 cb5 6.cb5).

4.c4 Bf5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.c4 c6).

4.c4 Bf5 5.a4 (---> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.a4 Bf5 5.c4).

4.c4 Bf5 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.c4 g6 5.Nf3 Bg7 6.d4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5).

4.c4 g6 5.Nf3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d5).

4.Be2 e6 5.a3 Nbd7 6.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.Be2 e6 6.a3).

4.Nf3 a5 5.b5 (--> 1.b4 c6 2.e3 a5 3.b5 d5 4.Bb2 Nf6 5.Nf3).

4.Nf3 Nbd7 5.Be2 e6 6.a3 Bd6 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6 7.Be2).

4.Nf3 e6 5.b5 Be7 6.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Be7 6.Nf3).

4.Nf3 Bf5 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6).

4.Nf3 Bf5 5.c4 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.Nf3 Bg4 5.a3 Nbd7 6.Be2 e6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Nbd7).

4.Nf3 Bg4 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3).

4.Nf3 Bg4 5.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 c6).

4.Nf3 g6 5.c4 Bg7 6.Nc3 0-0 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.Nc3).

4.Nf3 g6 5.c4 Bg7 6.d4 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5).

4.Nf3 g6 5.c4 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.Be2 d5).

4.Nf3 g6 5.Be2 Bg7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.Be2 0-0 6.0-0 c6).

4.f4 g6 5.Nf3 Bg7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0-0 5.Nf3 d5 6.Be2 c6).

4.f4 g6 5.Nf3 Bg7 6.Be2 0-0 7.0-0 Bg4 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0-0 5.Nf3 d5 6.Be2 Bg4 7.0-0 c6).

4.e3 Ngf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7).

4.g3 Ngf6 5.Bg2 g6 6.0-0 Bg7 7.d3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d5 6.0-0 c6 7.d3 Nbd7).

4.g3 Ngf6 5.Bg2 g6 6.d3 Bg7 7.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d5 6.0-0 c6 7.d3 Nbd7).

4.e3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6).

4.e3 Nf6 5.a3 Be7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6).

4.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Bf5 4.Nf3).

4.e3 e6 5.a3 Nf6 6.c4 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6 6.a3).

4.e3 e6 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Bf5 4.c4 e6 5.Nf3).

4.e3 e6 5.c4 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 c6).

4.e3 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 c6).

4.e3 e6 5.a3 Nbd7 6.c4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 c6).

4.e3 e6 5.a3 Be7 6.d4 0-0 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.c4 c6 7.d4).

4.e3 Bg4 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3).

4.e3 Bg4 5.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 c6).

4.e3 Bg4 5.Be2 Nbd7 6.0-0 e6 7.a3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Nbd7 7.0-0).

4.e3 Bg4 5.h3 Bh5 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.h3 Bh5).

4.e3 g6 5.c4 Bg7 6.Nc3 0-0 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.Nc3).

4.e3 g6 5.Be2 Bg7 6.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.Be2 0-0 6.0-0 c6).

4.g3 g6 5.Bg2 Bg7 6.0-0 0-0 7.d3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 d5 6.0-0 c6 7.d3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1).

3.a3 e6 (--> 1.b4 d5 2.Bb2 e6 3.a3 Nc6).

3.a3 Be6 4.e3 f6 5.Bb5 Qd7 6.Nf3 a6 7.Ba4 b5 8.Bb3 Nh6 9.a4 ba4 (9...Bg4 10.ab5 Nb4 11.d4+-) 10.Ba4+- Qd6 (10...Bg4 11.h3 Bf3 12.Qf3+-) 11.Nd4 (11.Ba3!? Bd7 12.Nc3+-) 11...Bd7+= 12.Bc6 Bc6 13.0-0 Bb7 14.b5 (14.c3 e5 15.Nb3 Qe6=) 14...e5 15.ba6 (15.Ba3 Qb6 16.ba6 Ra6=) 15...Ra6=+ 16.Nb3 Ra1 17.Ba1 Be7 18.d4 (18.Bb2 Qc6=) 18...0-0=+ 19.de5 (19.Nc3 Rb8=+) 19...fe5-/+ 20.Nc3 c5 Black prepares d4 21.Na5 Ba8 22.Qe2 d4 23.Qc4 (23.ed4!? cd4 24.Nb5-/+) 23...Kh8–+ 24.ed4 ed4 25.Nb5 (25.Ne2 Ng4 26.Ng3 Qh6–+) 25...Qb6 (25...Qg6 26.f3 Bf3 27.g3–+) 26.Nb3 (26.Qe2 Nf5 (26...Qa5?! 27.Qe7 Rb8 28.Nc7=+) 27.Nb3 Qg6–+) 26...Qc6 (26...Qg6!? 27.f3 Bf3 28.g3–+) 27.f3-/+ Nf5 0–1. GuestNWNG – Krakonkas, freechess.org, 2017.

3.a3= Nh6 4.e3 Bg4 5.Be2 Be2 6.Ne2 Nf5 7.b5 (7.0-0 e6=) 7...Na5 8.d3 b6 (8...Qd7 9.Be5=) 9.0-0 (9.Nbc3+=) 9...h5 (9...a6 10.a4+=) 10.Nf4 (10.e4 de4 11.de4 Nd6+=) 10...e6 (10...a6 11.Nc3+/-) 11.Nd2 (11.e4 de4 12.de4 Nd6+=) 11...Qd6 (11...Nd6 12.a4+= (worse is 12.Nh5 Qh4 13.g4 Nb5+=)) 12.Nf3 (12.Bc3 Nb7+=) 12...f6 (12...Qc5 13.Be5+=) 13.g3 (13.Ng6!? Rh6 14.Nf8 Kf8 15.Bc3+/-) 13...e5 (13...0-0-0 14.e4 de4 15.de4+/-) 14.Ng6+= Rh6 15.Nfh4 (15.Nf8!? Kf8 16.Bc3+=) 15...Nh4= 16.Nh4 (16.Nf8 Nf5 17.e4 Ne7–+ (17...Kf8?! 18.ef5 a6 19.a4 ab5 20.ab5=)) 16...g6 (16...Qd7 17.f4 Qb5 18.Rb1=) 17.Qf3 (17.e4 0-0-0 18.Bc1+=) 17...Qe6 (17...c6 18.e4 de4 19.Qe4+=) 18.a4 (18.e4 c6+=) 18...c5 (better is 18...g5!? 19.Ng2 h4+=) 19.e4+= d4 20.Bc1 g5 21.Nf5 Rh7 (21...Rh8 22.Bd2+=) 22.Bd2 0-0-0 (22...Nb7 23.a5+=) 23.Ba5+/- ba5 24.Rfc1 (24.Rac1 Qa2+/-) 24...Kb8 (24...g4 25.Qe2+/-) 25.Qe2 (25.c3 Qb3+/-) 25...h4 26.g4 (26.c3 Bd6+/-) 26...Rhd7 (26...c4 27.c3 Bc5 28.Rab1+/-) 27.Qd2 (27.c3 Bd6+/-) 27...Qb6 (27...c4 28.Qa5 Bc5 29.b6 Bb6 30.Qa6+-) 28.Rab1 c4 29.h3 (29.dc4 Rc8+/-) 29...Bb4 30.Qe2 Bc3 (30...c3 31.Re1+=) 31.Rf1 (31.dc4 Rc8+=) 31...Rc8 32.dc4 (32.Qf3 Rdc7+=) 32...Qc5 33.Rb3 (33.Rfd1 Qc4 34.Rd3 Qa4=) 33...Qc4 34.Qd3 (34.Qf3 Qa4 35.Rfb1 Qa2+=) 34...Kb7 (34...Bb4 35.Rd1=) 35.Rfb1 (35.Qf3 Qa4 36.Rfb1 Qa2+=) 35...Kb6 (35...Bb4 36.R1b2 Qd3 37.cd3 Rc1 38.Kg2 Ra1-/+) 36.Qf3+= Qe6 (worse is 36...Qa4 37.Ne7 Rf8 38.Nd5 Kb7 39.b6+-) 37.Qd3 (37.Rd1 Kb7+=) 37...Rc4 (37...Qc4 38.Rc1=) 38.Rd1 Rdc7 39.Ra3 (39.Qf3 Kb7=) 39...Bb4 (better is 39...Bb2 40.Rb3 Rc2=) 40.Ra2?? (better is 40.Rb3=) 40...Rc3–+ 41.Qf1 (41.Rb2 Rd3 42.cd3 Kb7–+) 41...Qa2 (41...Qa2 42.Qg2 Qc2–+) 0–1. Schneider,Helmut – Pittag,Andreas, Dortmund op–B, 2003.

3.a4 Nb4 4.e3 f5 (4...Bf5 5.d3-/+) 5.Qh5 (5.Nf3 Nf6=+) 5...g6-/+ 6.Qd1 Nc6?? (better 6...Nf6-/+) 7.Bh8+- d4 (7...e5 8.Bb5 e4 9.Ne2+-) 8.Nf3 (better 8.ed4 Nd4 9.c3 Ne6+-) 8...Bh6 (8...de3 9.fe3 Nf6 10.Bb5+-) 9.Nd4 Nd4 10.Bd4 e6 (10...Nf6 11.Qf3 Qd6 12.Nc3+-) 11.Be2 (11.Bc4 Ne7+-) 11...a5 (11...Nf6 12.0-0+-) 12.c4 (12.0-0 Nf6+-) 12...b6 (12...Ne7 13.Bc3+-) 13.Nc3 c5 (13...Bb7 14.Bf3 Bf3 15.Qf3+-) 14.Be5 Bb7 (14...Kf8 15.Bf3 Ra6 16.d4+-) 15.0-0 1–0. GuestYFDH – GuestVBMS, freechess.org, 2016.

3.b5 a6?? 4.bc6+- bc6 5.e3 Bf5 6.Nf3 Qd6 7.Be2 Qg6 8.g3 (8.Nh4!? Qg5 9.Nf5 Qf5+-) 8...Bc2 9.Qc1 Bb1 10.Rb1 e6 (10...c5 11.Ne5 Qd6 12.Qc2+-) 11.0-0 (better is 11.Qc6 Kd8 12.Qa8 Ke7+-) 11...Nf6 (11...c5 12.Ne5 Qg5 13.Qc2+-) 12.Kg2 (12.Qc6 Nd7 13.Qa8 Ke7 14.Ba3 c5+-) 12...Ng4?? (12...c5+-) 13.Nh4 (13.Qc6 Kd8 14.Qa8 Kd7 15.Ba6 Bd6 16.Qh8 f6+-) 13...Qh6 (13...Qe4 14.Bf3 Qa4 15.Bg4+-) 14.Bg4 (14.Qc6 Ke7 15.Qc7 Ke8 16.Qc6 Kd8 17.Qa8 Kd7 18.Qa7 Ke8+-) 14...Qg5 (14...c5 15.Qc2 Bd6 16.e4+-) 15.Be2 (better is 15.Qc6 Kd8 16.Qa8 Kd7+-) 15...Bb4 (15...c5+-) 16.Qc6 Ke7 17.Qc7 Ke8 18.Be5 (better is 18.Qc6 Ke7 19.Nf3 Rhc8 20.Qb7 Ke8 21.Ng5 Be7+-) 18...Rd8 19.Rb4 Rd7 20.Rb8 Rd8 (20...Ke7 21.Qc5 Rd6 22.Qd6) 21.Rd8 (21.Rb7 Qg3 22.fg3 Rd7 23.Qd7 Kf8 24.Qf7) 21...Qd8+- 22.Qd8 (22.Qc6 Qd7 23.Qa6 Rg8 24.Bb5 Ke7 25.Bd7 Re8 26.Qd6 Kd8 27.Be6) 22...Kd8 23.Bg7 Rg8 24.Be5 Ke7 25.Rc1 Kd7 26.Ba6 (26.Ba6 Ra8 27.Bb5 Ke7 28.Rc7 Kf8 29.a4+-) 1–0. Fournier,Frederic (1780) – placto, Active ajedrez21.com, 2005.

3.b5 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.b5 Nc6).

3.b5 Bg4 4.bc6 bc6 5.h3 Bf5 6.e3 Qb8 7.Qc1 e6 8.Nf3 Bc5 (8...Qb6+-) 9.Bg7 Qb6 10.Bh8 Bc2 (10...Ne7+-) 11.Qc2 0-0-0 12.a4 (Better is 12.Nc3 Qb7+-) 12...Nf6 13.Bf6 Rg8 14.a5 Qb5 15.Nc3 Qb4 16.Na4 Be3 17.fe3 Rg6 18.Be5 f6 19.Bh2 Qa5 20.Qc6 Qb4 21.Ba6 Kd8 22.Qc7 Ke8 23.Bd6 Rg2 24.Qe7 1–0. maaxa – mary3, Live Game Caissa's Web, 2004.

3.c3 Ne5 4.d3 Ng4 (4...Nf6 5.e3+=) 5.Nf3= Bf5 (5...Qd6 6.Nbd2=) 6.Nd4 (6.Nbd2 N4f6=) 6...Bg6 (6...Bd7 7.Nf3=) 7.Qa4 Qd7 8.Qd7 Kd7 9.h3 (9.Nd2 e6=) 9...Ne5 (9...N4f6 10.Nf3=) 10.f4 (10.b5 c5=) 10...Nc6 11.Nc6 bc6 (11...Kc6 12.Nd2=) 12.Nd2+= Nf6 (12...e6 13.Nb3+=) 13.Nf3 c5 (13...e6 14.Ne5 Ke8 15.Nc6+=) 14.Ne5 Ke6 (14...Ke8!?+=) 15.bc5 (better is 15.g4 h5 16.Bg2 hg4 17.hg4 Rh1 18.Bh1+-) 15...Bf5? (better is 15...Nd7 16.c4 Ne5 17.Be5 f6+/-) 16.g4+- Bg6 17.c4 (17.Ng6?! hg6 18.Bg2 Rb8+-) 1–0. Wall,Bill – Lifejacket, internet, 2000.

3.c3 e6 4.e3 Nf6 5.a3 Ne4 6.Nf3 a6 7.c4 dc4 8.Bc4 b5 9.Be2 Nf2?? (better is 9...Nf6=) 10.Kf2+- Bd6? (10...Bb7+-) 11.Qc2 (worse is 11.Bg7 Rg8 12.Bb2 Bb7+-) 11...0-0 (11...Ne7 12.Bg7 Rg8 13.Qh7+-) 12.Qc6 Bd7 13.Qc3 Rc8 (13...f6+-) 14.Qg7 1–0. Janek – Vogs, internet, 2016.

3.c3 Bf5 4.d3 (4.Nf3 a6=) 4...Nf6 5.Nf3 e6 6.b5 Na5 (6...Nb8 7.Nh4=+) 7.Qa4= b6 8.Nbd2 Bd6?? (better 8...Nb7=) 9.e4+- de4 10.de4 (10.Ne4?! 0-0=) 10...Bg4 (10...Bg6 11.e5+-) 11.e5 Bf3 12.Nf3 (12.ed6?! Bb7 13.dc7 Qc7=) 12...0-0 13.ef6 Qf6 14.Bd3 Bc5 (14...Rac8 15.Rd1+-) 15.0-0 Qe7 16.Rad1 Rad8 17.h3 h6 18.c4 Qe8 19.Rd2 Qe7 20.Rfd1 Bb4 21.Re2 Qc5 (21...Rfe8 22.Nd4 Qf8 23.Nc2+-) 22.a3 Rd3 23.Rd3 (23.ab4?! Rd1 24.Qd1 Qb4+-) 23...Qf5 24.Rd7 (24.Qb4?! Qd3 25.Re3 Qc2+-; 24.ab4?! Qd3 25.Qc2 Qc2 26.Rc2 Nb7+-) 24...Qb1 (24...Bd6 25.c5! Qc5+-) 25.Rd1 Qf5 (25...Qa2 26.Qb4 Qc4 27.Qc4 Nc4 28.Rc1 Nb2 29.Rb2+-) 26.Qb4 Nb7 (26...c5 27.Qa4+-) 27.Qe7 Nd6 (27...Rc8 28.Be5+-) 28.Qc7 Ne4 29.Qa7 1–0. Maestro – Smiuk, internet, 2020.

3.c3 Nf6 4.a3 (4.Nf3 a6=+) 4...e5-/+ 5.d3 Bf5 (5...Bd6 6.Nf3-/+) 6.Nf3=+ Bd6 7.Nbd2 0-0 8.c4 d4 9.c5 Be7 10.Nc4 Nd7 11.b5 Ncb8 12.g4 (12.c6 bc6 13.bc6 Nc6=) 12...Bg4-/+ 13.Nce5 Bf3 (13...Ne5!? 14.Ne5 Be6-/+) 14.Nf3=+ Bc5 (14...Nc5 15.Nd4 Bf6 16.e3=+) 15.Nd4= Bd4 16.Bd4 Qh4 (16...c6 17.Qb3=) 17.Be3 (17.Bc3 a6+=) 17...Nf6 (17...a6 18.ba6 Ra6 19.Rb1=) 18.Bg2+= c6 19.Qd2 (19.Qb3 Rc8+=) 19...Nd5 (worse 19...cb5 20.Bb7 Nbd7 21.Ba8 Ra8 22.Qb4+-) 20.bc6 bc6 21.0-0 Nd7 22.Bg5 Qg4 23.h3 Qf5? (better 23...Qe6+=) 24.e4+- Qg6 25.ed5 cd5 26.Be7 Rfe8 27.Rae1 1–0. Janek – figjjun, internet, 2017.

3.d4 Nb4!? 4.a3 Nc6 -/+.

3.d4 e6 4.a3 Nf6 5.Nf3 Bd6 6.e3 Bd7 7.Bb5 (7.Bd3 Ne7=) 7...a6 8.Bc6 Bc6 9.Nbd2 0-0 10.0-0 Re8 11.Ne5 Be5 (11...Ba4!?+=) 12.de5= Ne4 13.Ne4 de4 14.c4 b6 15.Bd4 Qh4 16.g3 (16.Qc2 Red8+=) 16...Qh3 17.c5 bc5 18.Bc5 Red8 19.Qc2 Rd5 (19...Bb5 20.Rfe1 Qf5 21.Red1+=) 20.Rad1 (20.Bd4 Bb5 21.Rfc1 Bd3=) 20...Rad8 (20...Bb5 21.Rfe1 Re5 22.Be7-/+) 21.Rd5 (21.Bd4 Bb5 22.Rfe1 Qg4=) 21...ed5+= (worse is 21...Rd5 22.Bd4 Bb5 23.Rc1+/-) 22.Rd1 h6?? (22...Bb5!?+=) 23.Bd4 (better is 23.Be7!? Rd7 24.Qc6 Re7 25.Qd5+-) 23...Bd7 24.Qc7 Rc8 25.Qd6?? (better is 25.Qb7=) 25…Bg4–+ (25...Bg4 26.Qa6 Rc4 27.Qc4 dc4–+) 0–1. Dazzer – pieeater, ChessWorld.net, 2012.

3.e3 a6 (--> 2…a6 3.e3 Nc6).

4.b5 Nb8 5.Nf3 Bf5 (5...Nd7 6.Bd4 f6 7.e3 Nh6 8.Bb2 Nc5 9.Nc3 Nf5 10.d4 Ne4; 5...Nf6 6.Bd4 Qd6 7.Be5 Qc5 8.e3 Nbd7 9.d4 Qb6 10.Nc3 a4) 6.Nc3 e6 (6...Nf6 7.g3 Nbd7 8.Bg2 Nc5 9.0-0 h5 10.d3 e6) 7.Nd4 Bg4 (7...Nh6 8.Nf5 Nf5 9.e4 de4 10.Ne4 Nd7) 8.h3 c5?? (better is 8...Bh5= 9.g4 Bg6 10.h4 e5) 9.bc6+- (9.bc6 Bh5 10.g4+-; 9.hg4?! cd4 10.Na4 e5+=) 1–0. Fritz 11 – nn, 2011.

5.a4 Bf5 (5...Nf6 6.Nf3 g6 7.e3 Bg7 8.Nc3 Ne4 9.Be2 0-0 10.0-0 Bd7; 5...Bd7 6.Nf3 Nf6 7.Nc3 e6 8.e3 Bd6 9.Bd3 0-0 10.0-0 e5; 5...c5 6.Nf3 Nf6 7.e3 e6 8.c4 Bd6 9.Nc3 b6 10.Bd3 dc4; 5...e6 6.Nf3 Nf6 7.e3 Bd6 8.Nc3 0-0 9.Be2 Bd7 10.0-0 Nc8; 5...Bg4 6.Nf3 Nf6 7.Ne5 Qd6 8.d4 c6 9.Ba3 Qc7 10.h3 Bf5) 6.Nf3 Nf6 7.e3 Nc8 8.Nc3 e6 9.Bd3 Nd6 10.0-0 Be7.

5.e3 a4 6.Nf3 Bd7 7.Nc3 c6 8.Na4 Nb5 9.Nc5 Ra7 (9...Nd6!?+=) 10.Nd7 Qd7 11.Bb5 cb5 12.0-0 e6 13.d3 Nf6 14.Ne5 (14.Bf6 gf6 15.Qc1 Rg8+=) 14...Qd6 15.c4 dc4 16.dc4 Qd1 17.Rfd1 Be7? (better is 17...bc4!? 18.Nc4 Bc5+=) 18.cb5+- 0-0 19.a4 Rfa8 20.Rd4 (20.Rac1 Ra4 21.Rc7 Ra2+/-) 20...Bc5 (better is 20...Nd5!?+=) 21.Rc4+/- Bd6 22.Nd3 Nd5 23.Bd4 Ra5 24.h3 (24.e4 Nf4 25.Nf4 Bf4+-) 24...e5 (24...f5 25.f3+/-) 25.Be5 (25.Ne5 Be5 26.Be5 f6+-) 25...Be5 26.Ne5 Nb6 (26...f6 27.Nd7 Rb5 28.Rd1+-) 27.Rb4 (better is 27.Rc7!? Rb5 28.ab5 Ra1 29.Kh2+-) 27...Na4+/- 28.Nd3 b6 29.Ne5 Nc3 30.Rc1?? (better is 30.Ra5 ba5 31.Rb3+-) 30...Ne2–+ 31.Kf1 Nc1 32.Nc6 (32.g4 Na2 33.Rb3 Ra3 34.Ra3 Ra3–+) 32...Ra1 0–1. Fournier,Frederic – sixmix, Active, 2008.

5.e3 c6 6.a4 cb5 7.ab5 Qb6 8.Bd4 Qg6 9.Nc3 e6? (better is 9...e5 10.Be5 Bg4+-) 10.Ra5 Bb4 11.Ra7 (11.Ra7 Ra7 12.Ba7+-) 1–0. pierre – oppo, internet, 2012.

5.e3 Qd7 6.a4 c6? (6...Qd6 7.Nf3+=) 7.c4?? (7.b6!? f6+-) 7...dc4? (7...b6+=) 8.Bc4?? (better is 8.b6 Nb5 9.ab5 cb5 10.d3+-) 8...cb5+= 9.ab5 Nb5 10.Qb3 (better is 10.Nf3 Nd6 11.Ne5=) 10...Nf6?? (better is 10...Nd6 11.Nc3 Nc4 12.Qc4 Qc6 13.Qc6 bc6-/+) 11.Bb5+- (11.Qb5?! Qb5 12.Bb5 Bd7+-) 11...Ne4 (11...b6+-) 12.Bd7 Bd7 13.Qb7 Rd8 14.Qe4 e6 15.Ba3 (15.Ra5 Rc8+-) 15...Ba3 16.Ra3 0-0 17.Nc3 a4 18.Nge2 Rb8 19.0-0 f5 20.Qd4 f4 21.Qd7 fe3 22.fe3 h5 23.Rf8 Rf8 24.Qe6 Kh7 25.Ra4 Rb8 (25...Rf6 26.Qe4 Kh6 27.Ra8 g6 28.Qe5 Kg7 29.Nd5 Kh7 30.Qf6 g5 31.Rh8) 26.Nf4 Rb1 (26...Rd8 27.Ra5 Rd5 28.Qg6 Kg8 29.Ra8 Rd8 30.Rd8) 27.Kf2 (27.Nb1 h4 28.Qg6 Kg8 29.Ra8) 27...Rb2 (27...Rb8 28.Ra5 Rb5 29.Qg6 Kg8 30.Ra8 Rb8 31.Rb8) 28.Ke2 (28.Qf5 Kg8 29.Ra8 Rb8 30.Rb8) 28...Kh8 (28...Rd2 29.Kd2 h4 30.Qg6 Kg8 31.Ra8) 29.Ra8 Kh7 (29...Rb8 30.Rb8 Kh7 31.Qg6) 30.Qg6 1–0. Fournier,Frederic (1760) – tama27(C), Active, 2005.

5.e3 Bd7 6.a4 c6 7.c4 cb5 8.cb5 b6 (8...Bf5 9.Nf3=) 9.Nf3 e6 10.Be2 Bb4?? (better 10...Nf6+=) 11.Bg7+- 1–0. GuestBTJT – GuestJYTZ, freechess.org, 2016.

5.e3 e6 6.c4 c6 7.d4 (7.bc6 bc6 8.Nf3 Nf6=) 7...Bd7 (7...dc4 8.bc6 b5 9.a4=+) 8.bc6 Nc6 9.Nf3 (9.Nc3 Nf6+=) 9...b6 (9...Nf6 10.Nc3+=) 10.Be2 (10.cd5 ed5 11.Bb5 Bd6+=) 10...Bd6 11.cd5 ed5 12.0-0 (12.Nc3 Nf6+=) 12...Nf6 13.Qb3 (13.Nc3 0-0+=) 13...Ne7 (13...a4 14.Qc2=) 14.Nbd2 (14.a4 0-0+=) 14...0-0 (14...a4 15.Qd1=) 15.Ne5 (15.a4 Rc8+=) 15...Bf5 (15...a4 16.Qd1=) 16.Rac1 (16.Bb5 Rc8+=) 16...Nd7 (16...a4 17.Qa2=) 17.Bf3 Attacking the isolated pawn on d5 (17.Bb5 Be5 18.de5 Nc5=) 17...Ne5 (17...Be5 18.de5 Nc5 19.Qa2=) 18.de5+= Bc5 19.Rfd1 Qb8 (19...a4!? 20.Qb5 Re8+=) 20.e4+- de4 (20...a4 21.Qa2 de4 22.Ne4+-) 21.Be4 (21.Ne4 a4 22.Qc3 Ra5+-) 21...Be4 (21...Ra7 22.Qf3 Be4 23.Ne4+=) 22.Ne4 Rc8 (22...Ng6 23.e6 Nf4 24.ef7 Rf7 25.Ng5+-) 23.Rd7 Nc6?? (better 23...a4 24.Qg3 Rf8+-) 24.Qf7 (24.Qf7 Kh8 25.Qg7) 1–0. jaddwarrior (1875) – bazileus (1725), ChessWorld.net, 2013.

5.e3 Bf5 6.Nf3 Nf6 7.Nc3 Nc8 8.Bd3 Nd6 9.0-0 e6 10.Ne5 Be7.

5.e3 Nf6 6.Nf3 c6 7.a4 cb5 8.ab5 Bf5 9.Nc3 Nc8 10.Bd3 Nd6.

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

4.e3 (--> 2…a6 3.e3 Nc6 4.a3).

4.Nf3 (--> 2…a6 3.Nf3 Nc6 4.a3).

4.e3 a6= A) 5.f4 Nf6 (5...e6 6.Nf3 Nf6 7.Bd3 Be7 8.0-0 0-0 9.Nc3 Bb7 10.Qe2 Na7=; 5...Bf5 6.Nf3 Nf6 7.Be2 e6 8.0-0 Bd6 9.Nh4 Be4 10.d3 Bg6+=; 5...Qd6 6.Nf3 Nf6 7.Be2 Bf5 8.0-0 Rd8 9.a4 Qb4 10.Bf6 ef6=) 6.Nf3 e6 7.Be2 Bd6 8.0-0 0-0 9.a4 ba4 10.c3 Bd7=; B) 5.a4 Rb8 (5...ba4 6.c3 e5 7.Qa4 Nge7 8.d4 e4 9.Nd2 Ra7 10.Nb3 h6+=) 6.ab5 ab5 7.Na3 Nb4 8.Bc3 e6 9.Bb5 Bd7 10.Bd7 Qd7=; C) 5.Nf3 Qd6 (5...Nf6 6.a4 Nb4 7.Bf6 gf6 8.ab5 Bf5 9.Nd4 Qc8 10.ba6 e5+=) 6.a4 ba4 7.b5 ab5 8.Bb5 Bd7 9.Ra4 Ra4 10.Ba4 Nf6=.

4.e3 e5 5.Bb5 Bb7 6.Be5 f6 7.Bb2 Nh6 8.Nf3 Bd6 (8...Nf5 9.0-0+-) 9.0-0 (better is 9.Nd4!? Qd7+-) 9...0-0 10.c4 dc4 11.Bc4 Kh8 12.d4 Be7 (12...a5 13.b5 Ne7 14.Nc3+-) 13.Nbd2 Nf5 14.Rc1 Nd6 15.Be2 (15.Bd5 Qe8+-) 15...Nb8 (15...a5 16.ba5 Na5 17.Qc2+-) 16.Nc4 (16.Qc2 a5+-) 16...Nd7 (16...Nc4 17.Bc4 Bd6 18.d5+-) 17.Nd6 (17.Na5!? Bd5+-) 17...Bd6 18.Qc2 Rf7 19.Nh4 Nf8 20.Bf3 Bf3 21.Nf3 (21.gf3?! a5+-) 21...Qe7 22.Rfe1 Ng6 23.h3 Qd7 24.Qc6 Qe6 (24...Qc6 25.Rc6 Ne7+-) 25.Qa8 Rf8 26.Qc6 (26.Qa7 f5+-) 26...Re8 (26...a5 27.ba5 Rb8 28.a6+-) 27.d5 Qe7 28.Qc3 Ne5 29.Ne5 Be5 30.Qc2 Bb2 31.Qb2 Qd6 32.Qc2 (32.Qd4 a5+-) 32...Rc8 (32...Qd5 33.Qc7 Qg8 34.Qa7+-) 33.Qc6 Qe5 34.Rc2 Qf5 (34...Rd8 35.e4 h6 36.Qe6+-) 35.Rec1 Re8 (35...h6 36.d6 Qd3 37.dc7+-) 36.Qc7 (36.Qe8) 36...Rg8 (36...Qd5 37.Qa7 Qe6 38.Rc6+-) 37.Qc6 Qe4 (37...h5 38.Qe6 Qd3 39.d6 Qa3 40.Rc8 Qc1 41.Rc1+-) 38.d6 (better is 38.Qe6 Qe6 39.de6 Rf8+-) 38...Qc6 39.Rc6 f5 40.Rc8 f4 41.d7 Rc8 (41...h6 42.Rg8 Kg8 43.d8Q Kf7 44.Qd7 Kg6 45.Rc6 Kh7 46.Qf5 g6 47.Qg6 Kh8 48.Rc8) 42.Rc8 1–0. Fournier,Frederic (1985) – javo298 (1795), Active, 2005.

4.e3 e5 5.Bb5 Bb7 6.Be5 Nf6 7.Nf3 Be7 8.Nd4 Qd7 9.c4 0-0? (9...a6 10.Bc6 Bc6+-) 10.Qa4 dc4 (10...Ng4 11.cd5 (worse is 11.Bc6 Bc6 12.Qc6 Ne5 13.Qd5 Bf6+-; 11.Nc6 a6 12.cd5 ab5 13.Qb5 Ba6+-) 11...Qd5 12.Bc6 Bc6 13.Nc6+- (13.Qc6?! Qe5 14.Nc3 Bd6+-)) 11.Bc6 (11.Nc6?! a6 12.Ne7 Qe7 13.Bf6 Qf6+-) 11...Bc6 12.Qc6 Qg4 13.Nc3 Nd7 (13...Rac8 14.0-0+-) 14.Bc7 Rac8 (14...Nf6 15.0-0+-) 15.h3 Qg2 (15...Nb8 16.Bb8 Qd4 17.Qc8 Rc8 18.ed4 Rb8+-) 16.Qg2 Rc7 17.Nd5 (17.Nd5 Kh8 18.Nc7+-) 1–0. Fournier,Frederic (2280) – SrATP (1705), Active, 2007.

4.e3 e5? 5.Nf3 Bd6 (5...a6 6.Ne5 Ne5 7.Be5+/-) 6.Bb5+- Bb7 (6...Nge7 7.Be5 a6 8.Bd6 (8.Bg7?! Rg8 9.Bc6 Nc6+/-) 8...Qd6 9.Bd3+-) 7.Ne5 (7.Be5 Be5 8.Bc6 Bc6 9.Ne5 Qd6+-) 7...Be5 8.Be5 Qg5 9.Bg3 Nge7 (9...d4 10.Bd3+-) 10.Nc3 0-0-0 (10...0-0 11.h4 Qf6 12.Bd3+-) 11.0-0 Ne5 (11...d4 12.h4 Qg6+-) 12.f4 Qg4 13.fe5 Qd1 14.Rad1 Ng6 (14...Rdf8+-) 15.Rf7 a6 16.Ba4 Rhg8 17.e6 Ne7 18.Re7 1–0. pierre – zapollo, internet, 2010.

4.e3 f6 5.Bb5+- Bd7? (5...Qd7 6.Nc3 e6 7.Nf3+-) 6.Nf3?? (better is 6.Qh5 g6 7.Qd5+-) 6...e5 7.0-0 Nce7 8.Bd7 Qd7 9.d3 c6 10.Nbd2 Ng6 11.c4 e4? (better is 11...a5 12.Qa4 Ra7 13.ba5 Bd6+/-) 12.de4+- de4 13.Ne4 Qg4 14.Nd6 Bd6 15.Qd6 Nh4 (15...N8e7+-) 16.Nh4 (16.Qc6 Kf7 17.Qd5 Qe6 18.Qa8 Nf3 19.Qf3 Qc4+-) 16...Qh4 (16...Ne7 17.Qd4 Qe6 18.Rfd1+-) 17.Rad1 (better is 17.Qc6 Kf7 18.Qa8 Qg4+-) 17...Ne7 (17...Kf7 18.Qc6 Ne7+-) 18.Qd7 (better is 18.Rd4 Qh5 19.Re4+-) 18...Kf7 19.Rd6 (19.Rd4 Qh6+-) 19...Rhd8? (19...Qc4 20.Qh3+-) 20.Qc7 (better is 20.Qe6 Kf8 21.Rd8 Rd8 22.Bd4+-) 20...Rd6 21.Qd6 Qc4 22.Rd1 Qe2 23.Qd2 (23.Bc3!? Qa2+-) 23...Qd2+/- 24.Rd2 Nd5 (24...a5 25.e4+/-) 25.Kf1 g5 (25...a5 26.b5!+-) 26.Ke2 (26.e4 Nb6 27.Rd6 Nc4 28.Rf6 Ke7+-) 26...h5 27.g3 Kg6 28.h3 Kf5 29.f3 Re8 (29...Ke6 30.e4 Ne7 31.Bc3+-) 30.Kf2 (better is 30.e4 Kg6+-) 30...Re3? (better is 30...Ke6+-) 31.Rd5! Ke6 (31...cd5 32.g4 Deflection (32.Ke3 Remove defender)) 32.Ke3 (32.Ke3 cd5 33.b5+-) 1–0. Fournier,Frederic (1850) – wein, Active, 2007.

4.e3 Nf6 5.Bb5 e5?? 6.Bc6+- Nd7 (6...Bd7 7.Ba8 Qa8 8.Be5+-) 7.Ba8 Bd6 (7...Nb6 8.Bc6 Bd7 9.Bd7 Nd7 10.Nc3+-) 8.Bd5 0-0 9.Nf3 Nf6 10.Bb3 Ne4 (10...e4 11.Ne5+-) 11.d3 Nf2 12.Kf2 Kh8 13.Rf1 f5 14.Kg1 e4 15.de4 fe4 16.Nd4 (16.Ne5 Be5 17.Qd8 Rd8 18.Be5 Ba6 19.Bc7 Bf1 20.Bd8 Ba6+-) 16...Re8 17.Qe2 (better is 17.Qh5 Rf8 18.Nd2 Bd7+-) 17...Qh4 18.g3 Bg3 19.hg3 Qg3 20.Qg2 Qe3 21.Kh1 (21.Rf2 Qh6+-) 21...Qh6 22.Qh2 Qe3 23.Nd2 Bg4 24.Rae1 (24.Nf5 Bf5 25.Rf5 h6 26.Bg7 Kh7 27.Bh6 Re6 28.Be3 Kg7 29.Rg1 Rg6 30.Qh6) 24...Qg5 25.Rf4 (25.Re4 Qg6 26.Ne6 Bh3 27.Ng7 Qg2 28.Qg2 Bg2 29.Kg2 h5 30.Ne6 Kh7 31.Ng5 Kg6 32.Rf6 Kg7 33.Rfe6 Kf8 34.Re8) 25...h5 26.Ref1 (better is 26.Rg4 Qe5 27.Qh4 Rf8+-) 26...e3 27.N2f3 (27.N4f3 Qg6 28.Bf7 Qd6 29.Rg4 Qh2 30.Kh2 Rf8 31.Rg7 Rf7 32.Rf7 Kg8 33.Ng5 ed2 34.Rf8) 27...Qg6 28.Nh4 Qe4 29.Re4 Re4 30.Ng6 (30.Qc7 Bd7 31.Qd8 Be8 32.Rf8 Kh7 33.Bg8 Kh8 34.Be6 Kh7 35.Rh8 Kh8 36.Qe8 Kh7 37.Qh5) 30...Kh7 31.Nf4 (31.Nf8 Kh6 32.Nf5 Bf5 33.Rf5 g6 34.Bg7 Kg7 35.Qc7 Re7 36.Qe7 Kh6 37.Qh7) 31...g5 32.Nh5 Kg6 (32...e2 33.Nf6 Kg7 34.Qh7 Kf8 35.Qf7) 33.Ng3 (33.Rf6 Kh7 34.Nf4 Bh3 35.Qh3 Kg7 36.Nf5) 33...Re7 (33...e2 34.Bf7 Kg7 35.Ne6) 34.Nde2 (34.Rf6 Kf6 35.Qh6 Ke5 36.Nde2) 34...Rh7 (34...Bf3 35.Rf3 Rh7 36.Bf7 Rf7 37.Qh5) 35.Rf6 Kg7 36.Rh6 (36.Rf7 Kg6 37.Qh7) 36...Kf8 37.Rh7 Be2 (37...Bf3 38.Kg1 Bd5 39.Rc7 Bg8 40.Qh8 Ke8 41.Qg8) 38.Ne2 (38.Rf7 Ke8 39.Qh8) 38...g4 (38...Ke8 39.Qe5 Kd8 40.Qh8) 39.Qh6 (39.Rf7 Ke8 40.Qh8) 39...Ke8 40.Qg7 Kd8 (40...g3 41.Qe7) 41.Qd7 1–0. Fournier,Frederic (1720) – LaReina37 (1775), Active, 2008.

4.Nf3 A) 4...Nf6 5.e3= (5.e4 de4 6.Bb5 Bd7 7.Bc6 Bc6 8.Ne5 Qd6 9.0-0 Bb7 10.Qe2 Rb8+=; 5.a4 ba4 6.b5 Nb8 7.Ra4 a6 8.e3 c6 9.ba6 Ba6 10.Be5 Nfd7=) 5...a6 6.a4 Nb4 7.Bf6 gf6 8.ab5 Bf5 9.Nd4 Qc8 10.ba6 e5+=; B) 4...Qd6 5.e3 (5.Nc3 a6 6.d4 Nf6 7.e3 Bg4 8.Be2 e6 9.h3 Bf3 10.Bf3 0-0-0=) 5...a6 6.a4 ba4 7.b5 ab5 8.Bb5 Bd7 9.Ra4 Ra4 10.Ba4 Nf6=; C) 4...a6 5.e3 Qd6 (5...Nf6 6.a4 Nb4 7.Bf6 gf6 8.ab5 Bf5 9.Nd4 Qc8 10.ba6 e5+=) 6.a4 ba4 7.b5 ab5 8.Bb5 Bd7 9.Ra4 Ra4 10.Ba4 Nf6=.

4.c3 e5 5.cd4 ed4 6.Nf3=.

4.c3 Bf5 5.cd4 (5.b5 dc3 6.Nc3 Nd4=) 5...Nd4 6.d3 e5 (6...Nf6!?=) 7.e3+/- Ne6 8.Be5 Be7 (8...Ne7 9.e4 Bg6 10.Nf3+=) 9.e4 Bf6 (9...Bg6!?+/-) 10.Bf6+- (10.ef5?! Be5 11.Ra2 Nd4=+) 10...Nf6? (better is 10...Qf6 11.ef5 Qa1 12.fe6 Qe5 13.Qe2 Qe6 14.Qe6 fe6+-) 11.ef5 Nd4 12.Nf3 0-0 13.Nc3 Re8 14.Kd2 Nf3? 15.Qf3+- c6 16.Be2 Nd5 17.Rac1 Qf6 18.Nd5 cd5 19.Qd5 Qb2+/- 20.Rc2 Qa3?? 21.Qc4 Qa4 22.Rhc1 Qd7 23.f6! g6 24.Bg4 Qd6 25.Re1 Qf6 26.f3 Qg5 27.Kd1 Re1 28.Ke1 Re8 29.Kd1 Qh4? 30.g3 Qf6 31.Qa2 a6? 32.Re2 Rd8 33.Kd2 Kg7 34.Qc2 Rd6 35.Qc3 Qc3 36.Kc3 b5 37.Re5 f6 38.Re6 Re6 39.Be6 h5 40.h4 f5 41.Bc8 1–0. wlittle (2160) – stardom (1845), net–chess.com, 2002.

4.Nf3 Bf5 5.e3 de3+= 6.fe3 Nf6 7.Bb5 Ne4 (7...Bd7!?+=) 8.0-0 Bh3?? (better 8...Bg4+/-) 9.Ng5 (better 9.Ne5 f6 10.Nc6+- (worse 10.gh3 Qd6 11.Qf3 Ng5+-)) 9...e6?? (9...Ng5 10.Bc6 bc6 11.gh3 Nh3 12.Kg2=) 10.Qe2 (10.Nf7 Qh4 11.Nh8 Bd6+-) 10...a6?? (better 10...Qg5 11.Bc6 bc6=+) 11.Bc6+- (11.Nh3?! ab5 12.Qb5 Nd6+/-) 11...bc6 12.Rf3 (better 12.Nf7 Qd7 13.Nh8+-) 12...Bg2?? (12...Ng5 13.gh3 Nf3 14.Qf3-+) 13.Nh3?? (better 13.Ne4 Bf3 14.Qf3+/-) 13...Bh3 (better 13...Bf3 14.Qf3 Qd5-+) 14.Rf2?? (better 14.Rh3 Ng5 15.Rg3=+) 14...Nf2-+ 15.Kf2 (15.Qf2 Qg5 16.Kh1 Qd5 17.Kg1 a5 18.ba5 Qb5-+) 15...Qf6 (better 15...Qh4 16.Kg1 a5-+) 16.Bf6+- (16.Bf6 gf6 17.Qf3+-) 1-0. opperwezen (2730) - GrAnDmAsTeRvIC (2295), lichess.org, 2017.

4.Nf3 f6 5.b5 Ne5 6.Nd4 e6? (6...Nc4 7.Bc3 e5 8.Nb3+-) 7.Nf3 (7.e3!? Ne7+-) 7...Bd6 8.Ne5 Be5 (8...fe5 9.Nc3+-) 9.Be5 (9.d4 Bd6+-) 9...fe5+- 10.e4 Nf6 11.f3?? (11.Nc3 0-0+-) 11...0-0?? (better 11...Ne4 12.Qe2 Qh4 13.g3 Ng3-/+) 12.Bc4?? (better 12.Nc3+=) 12...Qd4–+ 13.Qe2 (13.Nc3 Qc4 14.Qe2–+) 13...Qa1 14.0-0 Rd8 15.Nc3 (15.Qe3 a6–+) 15...Qa3 16.f4 Qc5 17.Kh1 Rf8 (17...ef4 18.Rf4 Rd4 19.d3–+) 18.fe5 (18.f5 Re8 19.Bb3–+) 18...c6 (better 18...Qe5 19.Qe3 Ng4 20.Rf8 Kf8 21.Qf3 Nf6–+) 19.ef6-/+ Rf6 20.e5? (better 20.Rf6 gf6 21.bc6 bc6 22.Qd3-/+) 20...Rg6?? (better 20...Rf1 21.Qf1 Qe5 22.bc6 bc6–+) 21.Ne4+= Qd4?? (better 21...Qe7 22.bc6 bc6+-) 22.Nd6 (better 22.Qf3 h5 23.Qf7 Kh7 24.Bd3 Qd3 25.cd3+-) 22...Bd7 23.c3?? (better 23.Qf3 Rf6 24.ef6 Qf6 25.Qd3+-) 23...Qb6?? (better 23...Qh4+=) 24.Qf3+- Qc5 (24...Qd8 25.Qf7 Kh8+-) 25.Qf7 Kh8 26.Qd7 (26.Qf8! Rf8 27.Rf8) 26...h6 27.Nf7 (27.Bd3 Rg2 28.Kg2 Qd5 29.Rf3 Qf3 30.Kf3 Rf8 31.Kg4 h5 32.Kh5 c5 33.Kg6 Rf6 34.ef6 gf6 35.Qg7) 27...Kg8 (27...Kh7 28.Rf4 cb5+-) 28.Qb7 Rf8 29.Nh6! Rh6 (29...Rh6 30.Rf8 Double attack; 29...gh6 30.Rf8 Double attack) 30.Rf8 Qf8? (better 30...Kf8 31.Qc8 Kf7 32.Qc7 Kf8 33.Qc6 Qc6 34.bc6 Ke7+-) 31.bc6+- Qf2 32.Qa8?? (better 32.Qb8 Kf7 33.h3 Qd2 34.Qa7 Kg6 35.Qd4 Qd4 36.cd4+-) 32...Kh7?? (better 32...Kf7 33.h3 Qe1 34.Kh2 Qe5 35.g3 Qc7+-) 33.Bd3+- Rg6 (33...g6 34.Qb7 Kg8 35.Qc8 Kg7 36.Qd7 Qf7 37.Qf7 Kf7+-) 34.Bg6 Kg6 35.Qe8 Kh7 36.Qh5 Kg8 37.Qd1 (better 37.h4 Qd2 38.Qe8 Kh7 39.Qe6 Qc3+-) 37...a5 (37...Qb6 38.Qg1 Qc6 39.Qa7 Qe4+-) 38.d4 Qe3 (38...Qb2 39.c4 Qb8+-) 39.c4 a4 40.c7 a3 41.c8Q Kf7 (41...Kh7 42.Qb1 Qe4 43.Qe4 g6 44.Qe8 a2 45.Q4g6) 42.Qf3 (42.Qf3 Qf3 43.gf3+-; 42.Qh5 g6 43.Qh7) 1–0. Darkseid (1795) – doppers, ChessWorld.net, 2008.

4.e3 e5 5.c3 (better is 5.b5!? Nce7 6.Be5+=) 5...a6 6.d4 (6.c4 dc4 7.Bc4 Nf6=+) 6...Nf6 7.h3 (7.Nf3 e4 8.Ne5 Bd6=+) 7...Bd6 8.Bd3 (8.c4 ed4 9.c5 Be7 10.ed4 0-0=+) 8...b5 (8...0-0 9.Nd2-/+) 9.Ne2 (9.a4=+) 9...ed4 (9...e4!? 10.Bc2 0-0-/+) 10.cd4= h6 (10...0-0 11.Nbc3=) 11.0-0 0-0 12.f3 (12.Nec3=) 12...Qc8 (12...Qe7 13.Bc1=+) 13.Bc2 (13.e4 Be7+=) 13...Bh3 (better is 13...Re8 14.Qd3 g6=) 14.Nf4?? (better is 14.gh3 Qh3 15.Rf2+=) 14...Bd7 (14...Bf5 15.Bf5 Qf5 16.Qd3–+) 15.Bc3 (15.Nc3 Bf4 16.ef4 Bf5-/+) 15...Ne7 (15...a5 16.ba5 Bf5 17.Bf5 Qf5 18.Qd3 Qd3 19.Nd3 Na5 20.Ba5 Ra5 21.Rc1–+) 16.Nd2 (16.Re1 Bf5–+) 16...Nf5 17.Nb3?? (better is 17.Bf5 Bf5 18.Qb3–+) 17...Ne3 (18.Qc1 Bf4–+) 0–1. presort – gdraper (1715), net–chess.com, 2005.

4.e3 Nf6 5.Nf3 e6 6.c4 dc4 7.Bc4 Bd6 8.0-0 0-0 9.d4 b6 10.Nc3 Qe8 11.e4 e5 12.de5 (12.Nd5!? Nd5 13.Bd5+/-) 12...Ne5= 13.Ne5 Be5 14.Qc2 a6 15.Nd5 Qe6?? (15...Ne4 16.Rae1 Bf5 17.Bd3 Bb2 18.Be4+- (18.Qb2?! Qd7 19.Be4 Be4 20.Nf6 gf6 21.Re4 Rfe8 22.Re8 Re8+=)) 16.Nf6?? (better is 16.Nc7 Qe7 17.Be5 Qe5 18.Na8 Ra8 19.Rad1+-) 16...Qf6+= 17.Be5 Qe5 18.Bd5 (better is 18.Rad1 Bb5 19.Rd5+=) 18...Qe8?? (better is 18...c6 19.Bc4 a5=) 19.Ba8+- Qa8 20.Qc7 Be6 21.Rfe1 a5 (21...b5 22.Rac1+-) 22.Qb6 a4 23.Rac1 Qe8 24.h3 Qe7 25.Rc7 Qf6 26.e5 Qf5 27.Rc3 g6 (27...Qg5 28.Qe3 Qh5 29.b5+-) 28.Qe3 Kg7 (28...Bb3 29.Qd3 Qg5 30.Rc5+-) 29.b5 (better is 29.g4 Qg4 30.hg4 Bg4 31.Qa7+-) 29...h6 (29...Bb3 30.Qd4+-) 30.Rcc1 (30.g4 Qg5 31.Qg5 hg5+-) 30...g5 31.b6 Kg6 (31...Bd5 32.Qc5 Rd8 33.Rcd1+-) 32.Qe4 (better is 32.b7!? g4 33.hg4 Qg4+-) 32...f6 (32...Qe4 33.Re4 Kf5 34.f3+-) 33.Qf5 Bf5 34.e6 g4 (34...Re8+-) 35.hg4 Bg4 36.e7 Re8 37.b7 Kf7 38.Rb1 h5 (38...Bd7 39.b8Q Rb8 40.Rb8+-) 39.b8Q Rc8 40.Qc8! Bc8 (40...Bc8 41.e8Q Mate attack) 41.e8Q Kg7 42.Re7 Kh6 43.Qg8 Bf5 (43...Be6 44.Qg7) 44.Rbb7 (44.Qg7) 44...h4 (44...Bg6 45.f4 Bf7 46.Qf7 h4 47.Qh7) 45.Rh7! Bh7 (45...Bh7 46.Rh7 Mate attack) 46.Rh7 1–0. Fournier,Frederic (1865) – Chicot,Patricia (1700), Active, 2007.

4.e3 Nf6 5.Nf3 e6 6.c4 Be7 7.Nc3 Rf8 (7...0-0 8.d4=) 8.cd5+= ed5 9.d4 Be6 10.Bd3 Qd7 11.0-0 0-0-0 (11...a6 12.Na4+=) 12.Re1 (12.b5 Na5+/-) 12...g6 (12...Bf5 13.Rc1+/-) 13.e4 (better is 13.b5!? Na5 14.Qa4+-) 13...de4+= 14.Ne4 (worse is 14.Be4 Nd4 15.Nd4 Qd4+=) 14...Ne4 15.Be4 f5 (15...Rfe8 16.Rc1 Bd5 17.b5 Be4 18.Re4+/-) 16.Bd3 (better is 16.Bc6 Qc6 17.d5 Rd5 18.Nd4+-) 16...h5?? (16...Bf6!?=) 17.Rc1?? (17.b5 Na5 18.Qe2 Bd5 19.Qe7 Bf3 20.gf3 Nb3+-) 17...Rg8?? (17...Bf6 18.Qa4+/-) 18.Qc2?? (better is 18.b5 Na5 19.Qe2+-) 18...g5?? (18...Bd6 19.b5 Ne7 20.Ne5 Be5 21.de5+/-) 19.h3 (better is 19.Re6 Kb8 20.Bf5+-) 19...g4+/- 20.hg4 fg4? (20...hg4 21.Ne5 Ne5 22.Re5 g3 23.Re6 gf2 24.Qf2 Bh4 25.Qf5 Rdf8+-) 21.Ng5?? (better is 21.Ne5 Ne5 22.Re5+- (22.de5?! Bg5 23.Rcd1 g3=)) 21...Rg5 (21...Bg5!? 22.Re6 Bc1 23.Re1 Bb2 24.Bf5 Bd4 25.b5–+) 22.b5 Rgg8?? (better is 22...Nd4 23.Bd4 Ba3–+) 23.bc6+- Qc6 24.Qc6 bc6 25.Rc6 (25.Re6 Bd6+-) 25...Kd7?? (better is 25...Bd5 26.Rh6 Rg7 27.Rh5 Bf6+/-) 26.Rcc1 (26.Rce6 Bd6+-) 26...Ke8?? (26...Rb8 27.d5 Rb2 28.de6 Kd8 29.Rb1=) 27.Bc4 (27.Re6 Kd7 28.Ra6 Rb8 29.Bf5 Kd8 30.Ra7 Bd6+-) 27...Rg6?? (better is 27...Bc4 28.Rc4 Kd7=) 28.Be6+- (worse is 28.Re6 Re6 29.Be6 Rb8+-) 28...Re6 (28...g3 29.Rc7 gf2 30.Kf2+-) 29.Re6 h4 (29...Kd7 30.Ra6+-) 30.d5 (better is 30.Rc7 Rd7 31.Rd7 Kd7+-) 30...g3 (30...Kd7 31.Be5 Rc8 32.Ra6+-) 31.f3 (31.Rc7 Rd7 32.d6 Rd6 33.Rce7 Kd8+-) 31...h3 (31...Kd7 32.Be5 Bd6 33.Bd6 cd6+-) 32.Rce1 h2 33.Kh1 Kd7 34.Re7 (34.Re7 Kd6 35.Rg7+-) 1–0. Fournier,Frederic (2075) – Chicot,Patricia (1610), Active Blind, 2007.

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

4.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3 e5).

4.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nc6).

4.Nf3 f6 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.Nf3 Nc6).

4.b5 Nb8 5.e3 e6 6.d4 (6...Nf6 7.Nf3=+; 6.Nf3 Nf6=) =. kamera (1615) – NN, GameColony.com, 2002.

4.e3 e5 5.b5+= Nb8 6.Be5 Nf6 7.c4 (7.Nf3 Nbd7+=) 7...Bb1 (7...Nbd7 8.Bd4+=) 8.Qb1+/- Bd6 (8...Nbd7 9.Bb2+/-) 9.Bc3 (9.Qf5 Be5 10.Qe5 Qe7+-) 9...0-0 (9...Nbd7 10.cd5 Nb6 11.Bf6 Qf6 12.Qe4 Kf8 13.d4+/-) 10.Nf3 (10.Qf5 Be7+/-) 10...Nbd7 11.Bd3 (11.Qf5 dc4 12.Bc4 Qe7+/-) 11...h6 (11...dc4 12.Bc4 Qe7 13.Qb2+/-) 12.0-0 Re8 13.Be2 (13.cd5 Nd5 14.Bd4 N7f6+/-) 13...Nb6 (13...dc4 14.Bc4 Qe7 15.Qb2+/-) 14.d3 Qe7 15.a4 Rad8 (15...dc4 16.dc4 Ne4 17.Bd4+/-) 16.Qb2 (16.Bf6 Qf6 17.a5 Nd7+-) 16...dc4+/- 17.dc4 Nbd7 18.Rfd1 Rc8 (18...Qe6 19.Bd3+/-) 19.Rd2 (19.a5+-) 19...Ne5? (19...Ne4!? 20.Rd4 c5+/-) 20.Ne5 (20.c5 Nf3 21.Bf3 Bc5 22.Bf6 Qf6 23.Qf6 gf6 24.Bb7 Red8+-) 20...Be5 21.Be5 Qe5 22.Qe5 Re5 23.Rad1 (23.Bf3 c6+-) 23...Ree8 (23...c6 24.Bf3+-) 24.Bf3 Rb8 (24...c6 25.a5+-) 25.h3 g6 26.a5 a6 27.b6 (27.Kf1 Kg7+-) 27...c6 28.Rd6 Kg7 29.c5 (29.Rc1 Re5 30.Ra1 Rbe8+/-) 29...Ra8 (29...Re5 30.Rc1+/-) 30.h4 (30.R1d4 g5+-) 30...h5 (30...Re5 31.Rc1+-) 31.Kh2 (31.R1d4!? Re5 32.Rf4 Re6 33.Re6 fe6+-) 31...Re5+/- 32.Rc1 Ree8? (32...Ne4 33.Be4 Re4 34.Rd4 Rd4 35.ed4+/-) 33.Rb1?? (better is 33.Rc6!? bc6 34.Bc6 Kf8+-) 33...Rac8 (33...Ne4 34.Be4 Re4 35.Rd4 Rd4 36.ed4+/-) 34.Rb2 (34.Rb4 Re5 35.Rf4 Nd5+-) 34...Red8 (34...Ne4 35.Be4 Re4 36.Rd4 Rd4 37.ed4+/-) 35.Rbd2+- Re8 36.Kh3 Re5 37.Rd8 (better is 37.Rc2!?+-) 37...Rd8+= 38.Rd8 Re7 (38...Rc5!? 39.Rb8 Ra5 40.Rb7 Nd5+/-) 39.Rc8+- Rd7 (39...Ne8 40.Bc6 bc6 41.Rc6+-) 40.Bc6 (better is 40.Rc7!?+-) 40...bc6+/- 41.Rc6 The passed pawn on b6 will quickly become a dangerous weapon 41...Rb7?? (better is 41...Ne4+-) 42.Rc7 (better is 42.Rf6 Kf6 43.c6+-) 42...Rb8 43.c6 Ne8 (43...Ne4 44.f3 Nc5 45.b7+-) 44.Rb7 (44.Ra7 Nd6+-) 44...Rc8 45.c7 Nc7 (45...Kf6 46.Rb8 Rc7 47.bc7 Nc7 48.Rc8+-) 46.Rc7 (46.bc7?! Kf6+-) 46...Rd8 (46...Rb8 47.Ra7 Kf6 48.Ra6+-) 47.b7 (better is 47.Ra7!? Rd3+-) 47...Rb8 1–0. Kuipers,Stefan – Van Vliet,Harry, NED–ch U12 Hengelo, 2002.

4.e3 e5 5.Bb5 Qd6 6.c3 (6.Nf3!? f6 7.d4=) 6...0-0-0 7.Ne2 Nf6 (7...a6 8.Ba4=+) 8.c4 (8.Qa4=) 8...a6 (8...dc4!? 9.Bc4 Nd5=+) 9.c5+= Qe6 10.Ba4 (10.Bc6 bc6 11.f4 e4+=) 10...Na7 (10...d4 11.Qb3=) 11.0-0 (11.f4 Nd7+=) 11...Kb8 (11...Bd3 12.Bc2 Bc2 13.Qc2=) 12.d3 b6 (12...Be7!?=) 13.cb6 cb6 14.h3 (14.d4 e4+=) 14...b5 (14...Bd6!?=) 15.Bb3+= Bd6 16.f3 (better 16.Ng3+=) 16...Rc8? (16...Be7 17.f4 ef4 18.Rf3+=) 17.Nbc3 (17.e4 Bh3 18.Nbc3 Ne4 19.fe4 Qg4+-) 17...Qd7 (17...Bc7 18.e4 Qb6 19.Kh2 de4 20.fe4+-) 18.Qd2 (18.Nd5 Nd5 19.Bd5 Rhd8+-) 18...h5 (18...Be6!?+=) 19.Nd5+- Nd5 20.Bd5 Be6 (20...Nc6 21.e4 Be6 22.Be6 Qe6 23.f4+-) 21.Be6 Qe6 22.Rfb1 (22.f4 Nc6+-) 22...g5+- 23.d4 (23.a4 g4 24.f4 gh3 25.fe5 Be5 26.ab5=) 23...Qd5? (better 23...g4+-) 24.e4+- Qb7 25.d5 (better 25.Qg5 Rhg8 26.Qh5 Rc2+-) 25...Rc7?? (better 25...g4+-) 26.Qg5+- Be7 (26...Re8 27.Rc1+-) 27.Qe5 Rh6 28.Qg7 Bg5 (28...Rg6 29.Qh8 Rc8 30.Qh5 Bd6+-) 29.Qg5 Rg6 30.Qh5 Rc8 (30...Nc8 31.Be5 Nd6 32.Rc1+-) 31.f4 (31.Nf4 Rg3+-) 31...Qb6 (31...Rcg8 32.g3+-) 32.Bd4 Qb7 33.f5 Rgg8 34.g4 (34.a4 Rce8 35.Qf3 Kc7+-) 34...Rcf8 (34...Rc4 35.Qh6 Re8 36.Qf4 Ka8 37.a4+-) 35.Nf4 f6 (35...Re8 36.Re1 Rc8 37.Nd3+-) 36.Qh4 (36.Ne6 Rf7 37.Nc5 Rh7+-) 36...Rh8 (36...Rf7 37.Ne6+-) 37.Qf2 (37.Qg3 Ka8 38.Ng6 Rd8 39.Nh8 Rh8+-) 37...Nc8 (37...Re8 38.Bf6 Rh7 39.Ne6+-) 38.Ng6 White prepares e5 38...Nd6 39.Nf8 (39.Qh2 Qc7 40.Bc5 Rh3 41.Bd6 Rh2 42.Bc7 Kc7 43.Rc1 Kd8 44.Kh2 Rf7+-) 39...Rf8 40.Qf4 Qd7 41.Re1 White plans e5 (41.Rc1 Rc8 42.e5 Nc4 43.e6 Qc7 44.Qc7 Kc7 45.Bf6 Re8+-) 41...Kb7 42.e5 (42.Bc5!? Rd8 43.Bd6 Qd6 44.Qd6 Rd6+-) 42...fe5 43.Be5 (43.Qe5 Nc4 44.Qe7 Rf7 45.Qd7 Rd7+-) 43...Nc4 44.Qd4 (better 44.a4 Rf7+-) 44...Qh7 (44...Rd8 45.Bf6 Qd5 46.Re7 Kc8 47.Qa7+-) 45.Kg2 (better 45.a4 Qd7+-) 45...Rf7 (45...Qd7 46.a4 Rd8 47.ab5 Qb5 48.Rac1+-) 46.Qe4 (46.a4 Ne5 47.ab5 a5 48.Ra5 Rc7 49.Qa7 Kc8 50.Qa6 Kd8 51.Qd6 Qd7 52.Qf8 Qe8 53.Ra8 Rc8 54.Rc8 Kd7 55.Qe8 Kd6 56.Qe6) 46...Nd2 47.Qc2 Nc4 48.Bd4 (48.a4!? Qh6 49.ab5 ab5+-) 48...Qh4 (48...Rc7 49.Qe4 Nd6 50.Qe6 Rc2 51.Bf2+-) 49.Bf2 (49.Qe4 Qd8+-) 49...Qd8 50.Red1 (50.Qe4 Nd6 51.Qe6 Rh7+-) 50...Rc7 (50...Qc8 51.Qe4 Qd8 52.a4+-) 51.Qb3 (51.Qe4 Nd6 52.Qd4 Nc8+-) 51...Rh7 (51...Qd7 52.d6 Rc8 53.a4 ba4 54.Ra4 Qc6 55.Qf3 Qf3 56.Kf3+-) 52.Qf3 (52.a4 Qe8+-) 52...Nd6 (52...Qd7 53.a4 Rg7 54.ab5 Qb5 55.d6 Qc6 56.Qc6 Kc6 57.b5 ab5 58.Ra6 Kb7 59.Ra7 Kc6 60.Rg7 Nd6 61.Rc1 Nc4 62.f6 Kd5 63.Rd1 Kc6 64.f7 Nb6 65.f8Q Nc4 66.Qc5) 53.Re1 (better 53.a4 ba4 54.Ra4+-) 53...Nf7 54.Re6 (54.d6 Kb8 55.Re7 Qe7 56.de7 Rh8 57.Qf4 Kb7 58.Rc1 Rc8 59.Qe4 Kb8 60.Rc8 Kc8 61.e8Q Nd8 62.Q4c6 Kb8 63.Qd8) 54...Kc8 (54...Ng5 55.Qd1 Ne6 56.de6 Qd1 57.Rd1 Re7+-) 55.Qc3 Kb8 56.Rb6 (56.Bg3 Ne5 57.Be5 Qc7 58.Rc1 Kc8 59.Re8 Kd7 60.Qc7 Ke8 61.Qc8 Kf7 62.Rc7) 56...Ka8 57.Qc6 Ka7 58.Qb7 1–0. Delboy Smith (1705) – gordiemac, ChessWorld.net, 2017.

4.e3 e6 5.c4 a5 (5...Nf6 6.Nf3=) 6.b5= Na7 (6...Nce7 7.Nf3=) 7.c5 (better is 7.Nf3=) 7...Bc5?? (better is 7...Nf6 8.d4 b6=) 8.Bg7+- Qg5 (8...Qd7 9.a4+-) 9.Bh8 f6 (9...Qe7 10.d4 Bd6 11.Be5+-) 10.Nf3 Qg6 (10...Qh6 11.d4 Bd6 12.Qa4+-) 11.Nh4 Qh6 (11...Bc2 12.Ng6 Bd1 13.Nf4+-) 12.Nf5 ef5 13.Qc2 Bd6 14.Qf5 Be5 15.Nc3 (15.Qe6 Kf8 16.Qd5 Ba1 17.Qb7 Re8 18.Qa7 Qg6+-) 15...Ne7 16.Qe6 Qf8 (16...Rd8 17.d4 Rd6 18.Qh3 (18.de5?! Re6 19.ef6 Qf8+/-) 18...Qh3 19.gh3 Bd4 20.ed4+-) 17.d4 (17.Nd5 Qf7 18.Nf6 Bf6 19.Qf6 Qd5+-) 17...Bd6 (17...Qf7 18.Qh3 (18.de5?! Qe6 19.Bf6 Ng8+/-) 18...Bd6 19.Qh6+-) 18.Bf6 c5 (18...Nac8 19.Nd5 Qf7 20.Qf7 Kf7 21.Be7 Ne7 22.Bc4+-) 19.Qd6 (19.Qd6 Rd8 20.Be7 Qe7 21.Qc5+-) 1–0. Kuipers,Stefan – Van Splunter,Jacco, Hengelo op U12, 2001.

4.e3 e6 5.Nf3 Nf6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nc6).

4.e3 f6=.

4.e3 Nf6 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nc6).

4.Nf3 e5 5.Ne5+= Ne5 6.Be5 Qe7 7.Bb2 0-0-0 8.e3 c5 (better is 8...Kb8!?+=) 9.bc5+- Qc5 10.Bd4 (10.Bd3 Bd3 11.cd3 Rd7+-) 10...Qa5 (10...Qc2 11.Ba7 Qd1 12.Kd1 Bb1 13.Bb5+/-) 11.Nc3 Bc5?? (better is 11...Ne7+/-) 12.Bg7+- Ne7 13.Bh8 Rh8 14.Bd3 Bd3 15.cd3 d4 16.Ne4 de3 (16...Kb8 17.Qg4 de3 18.fe3+-) 17.fe3 (17.Nc5!? ef2 18.Kf1 Re8+-) 17...Bb6 18.Qc2 (18.0-0 f5 19.Nd6 Kc7+-) 18...Kb8 19.0-0 Rg8 (19...f5 20.Nd6+-) 20.g3 (better is 20.Rf7 Qe5 21.Qc3 Qe6+-) 20...f5 21.Nd6 Bc7 22.Nc4 Qc5 23.d4 Qc6 24.Rac1 Bg3 (24...h5+-) 25.Ne5 (better is 25.hg3 Rg3 26.Kf2 Rf3 27.Ke2 Rf1 28.Kf1 Qh1 29.Ke2 Qg2 30.Kd3 Qe4 31.Kc3 Qe6+-) 25...Qd5 (25...Be1 26.Ng6 Rg6) 26.Rf5 (better is 26.Qc7 Ka8 27.hg3+- (27.Qe7?? Be1 28.Qg5 Rg5 29.Ng4 Rg4)) 26...Be5 (26...Bh4 27.Rg5 Rg5 28.Ng4 Rg4 29.Kf1 Qg2) 27.Kf1–+ Qg2 (worse is 27...Nf5 28.Qf5 Qb5 29.d3 Rg1 30.Kf2 Bg3 31.hg3 Qf5 32.Kg1–+) 28.Ke1 Bg3?? (better is 28...Nf5 29.Qf5 Qh2–+) 29.Kd1?? (29.hg3 Qg3 30.Rf2 Qg1 31.Ke2 Qg4 32.Kd3 Qg6 33.e4 Qg3 34.Ke2 Qg4 35.Rf3 Qg2 36.Ke3=) 29...Qg1–+ 30.Ke2 Qh2 31.Kd3 Nf5 32.Qc5 Qh5 (32...Qh5 33.Rf1 Ng7 34.Qh5 Nh5–+) 0–1. Fournier,Frederic (1605) – antmonk, Active, 2007.

4.Nf3 e6 5.b5 (5.e3 a6=) 5...Nce7 (5...Na5 6.e3=) 6.e3 Ng6 7.Be2 (7.Nd4 Nh6=) 7...Nf6 (7...Nh4 8.0-0=) 8.Nd4 Ne7 (8...Nh4 9.Nf5 Nf5 10.0-0=) 9.0-0 h6 (9...Bg6 10.c4=) 10.Nf5+= ef5? (better is 10...Nf5!? 11.Bd3 Be7+=) 11.Bf6+/- gf6 12.c4 dc4 (12...f4 13.Bf3+/-) 13.Bc4+- Ng6 (13...Qd7 14.d4+-) 14.d4 Qd7 15.Nc3 0-0-0 16.Qb3 (16.Qf3 Kb8+-) 16...Rh7 17.a4 (17.Nd5 Qd6+-) 17...Bd6 (17...f4 18.b6 cb6 19.Nd5+-) 18.a5 Rg8 (18...Rg7 19.b6 Nh4 20.g3 cb6 21.Kh1+-) 19.a6 (19.g3 f4+-) 19...b6 20.Bd5 Ne7? (better is 20...Rhg7+-) 21.Bf7 Rgg7 (21...Rf7 22.Qf7 Bb4+-) 22.Be6 1–0. Wall,Bill – WarriorPrince, internet, 1999.

4.Nf3 f6!? =.

4.c4 =.

4.e3 e5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 Nc6).

(--> 1.b4 d5 2.Bb2 Nf6 3.a3 Nc6).

4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nc6 4.a3).

4.e3 e6 5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.Be2 Nc6).

4.e3 Bf5 5.Nf3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 Nc6).

4.Nf3 e6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nc6 5.Nf3).

4.f3 Bf5 5.e3 Nf6 6.Bb5 e6 (6...Qd6 7.Ne2=) 7.Ne2+= Qd7 (7...a6 8.Bc6 bc6 9.Nd4=) 8.0-0 (8.Bf6 gf6 9.Nd4 Bg6+=) 8...Bd6 (8...Be7 9.Nd4+=) 9.Nbc3 (9.Bf6 gf6 10.Nd4 Bg6+=) 9...a6 (9...e5 10.f4=) 10.Ba4 (better is 10.Bc6 Qc6 11.Nd4+=) 10...b6?? (10...b5 11.e4 de4 12.fe4 Ne4 13.Ne4 Be4 14.Bb3-/+ (14.Bg7?? Rg8–+)) 11.f4?? (11.Nd4 b5 12.Ncb5 Bh2 13.Kh2+-) 11...Bg4 (11...b5 12.Bb3=) 12.Qe1 (better is 12.h3 Bh5 13.g4+=) 12...a5?? (better is 12...b5 13.Bb3 0-0=) 13.Nd4+- Qd8 (13...b5 14.Bb5 Ra6 15.ba5+-) 14.Bc6 (better is 14.Nc6 Qd7 15.Ne5 Qa4 16.Na4 Bf5+-) 14...Ke7 (14...Nd7 15.Qg3 h5 16.h3+-) 15.Ba8 (15.Bd5!? Ke8 16.Bc6 Nd7 17.Ba8 Qa8+-) 15...Qa8 16.ba5 (16.Ncb5 c5 17.Nd6 Kd6 18.bc5 bc5 19.Nb5 Ke7+-) 16...ba5 17.Rb1 Rb8 18.Ncb5 c5 19.Nd6 (better is 19.Nf3!? Rb7+-) 19...cd4 20.Bd4 (better is 20.h3 Bh5 21.g4 Bg4 22.hg4 Kd6 23.f5+-) 20...Kd6 (20...Rb1 21.Qb1 Kd6+-) 21.Be5 (better is 21.Rb8 Qb8 22.Be5 Kc6 23.Bb8 Nd7+-) 21...Ke7 22.Rb8 Qa6 (22...Qc6 23.Qh4 Be2 24.Rfb1+-) 23.Bf6 (better is 23.Qh4 Kd7 24.Rfb1+-) 23...Kf6 24.Qh4 Kf5 25.Qh7 (25.Qg5 Ke4 26.Qe5) 25...g6 If Black now would get f6 in, he might survive 26.Qf7 Ke4 27.Qg6 Bf5 28.d3 (28.Qf6 Qf1 29.Kf1 e5 30.Qe5) 28...Ke3 (28...Qd3 29.cd3 Ke3 30.Qg3 Kd4 31.Qf2 Kc3 32.Qe3 Bd3 33.Rc1) 29.Qg3 Kd2 (29...Kd4 30.Qf2 Kc3 31.Rb3) 30.Rf2 (30.Qf2 Kc3 31.Rb3) 30...Kc3 31.Rb3 (31.Qg7 e5 32.Qe5 d4 33.Qe1) 31...Kd4 32.Qg7 Kc5 (32...e5 33.Qe5 Kc5 34.Qc7 Kd4 35.Qc3 Ke3 36.Rb1 Qd3 37.Re1) 33.Qc7 Qc6 (33...Kd4 34.Qc3 Ke3 35.Rb1 Qd3 36.Re1) 34.Qc6 (34.Rc3 Kd4 35.Qe5) 34...Kc6+- 35.h4 (35.a4 Kd6+-) 35...Kd7 36.c4 (36.Rb7!? Kc6 37.Rg7 Kd6+-) 36...Ke7 37.c5 Kd7 38.h5 (38.d4 Kc7+-) 38...Kc6 39.d4 a4 40.Rb4 (40.Rb4 Bg4 41.Rfb2+-) 1–0. Vahl,Laurens – Welling,Wouter, Hengelo op U12, 1997.

4.Nf3 Nf6 =.

4.h3 Bh5 5.g4 Bg6 6.Bg2 f6 7.f4 (7.d4 e6=) 7...Qd6 (7...e5 8.f5 Bf7 9.Nc3=+) 8.e3 0-0-0 (8...e6 9.Nf3=+) 9.Nc3 (better is 9.b5 Nb8 10.Nf3=+) 9...f5 (better is 9...e6!?=+) 10.Nd5 (10.Bd5 e5 11.e4 fe4+=) 10...Bf7 (10...Nf6 11.Nc3+/-) 11.Nc3+/- e6 (11...e5 12.gf5 ef4 13.Nb5+/-) 12.Nge2 (better is 12.Nf3+/-) 12...g6?? (better is 12...Kb8+/-) 13.Nb5+- Qd7 (13...Qe7 14.Bh8 Qh4 15.Kf1+-) 14.Bc6 (better is 14.Bh8 Kb8+-) 14...Qc6 (14...bc6 15.Na7 Kb7 16.Bh8 Ka7+-) 15.Na7 (15...Kd7 16.Nc6 (16.Bh8?! Qh1 17.Kf2 Qh2 18.Ke1 Qh3=) 16...Kc6 17.Bh8+-) 1–0. HMBCHESS2 – TOLOSA16, Live Game Caissa's Web, 2005.

4.a3 Nc4=+ 5.Bc3 d4 (5...Nf6 6.e3=+) 6.e3= Nb2?? (better is 6...dc3 7.Bc4 cd2 8.Nd2 Nf6=) 7.Bb2+- 1–0. Wall,Bill – Corvette, internet, 2003.

4.Na3 a6 5.e3 (5.ba6 Ra6 6.e4 Re6=) 5...e6 (5...ab5 6.Nb5 c6 7.Nd4=+) 6.c4 (6.ba6 b6 7.Nf3=) 6...Ba3 (6...Nc4 7.Nc4 dc4 8.ba6 Ra6 9.Bc4=) 7.Ba3 (better is 7.Bg7 Nc4 8.Bh8 ab5 9.Qb3+/-) 7...Nc4-/+ 8.Bc4 (8.ba6 Ra6 9.Bb4 e5-/+) 8...dc4 9.Qg4 (9.ba6!? Ra6 10.Bb2-/+) 9...Qf6–+ 10.Rb1 ab5 11.Bb2 e5 12.Qe4 Bf5 13.Qb7 Qd8?? 14.Ra1 Rb8 15.Qc6 Bd7 16.Qe4 f6 17.Nf3 g6?? 18.0-0 Qe7 19.Rfe1 Qe6 20.a3 Bc6 21.Nd4 Qd6?? 22.Nc6+- Rb6 23.Na7 c6?? 24.Nc8 Qd5 25.Qd5 cd5 26.Nb6 d4 27.ed4 Kd8 28.de5 f5 29.e6 h5 30.Bh8 (30...Kc7 31.Nd5 Kd6 32.e7 Ne7 33.Ne7+-) 1–0. 1805DYDIDIDY – Bernd, mySchach.de, 2005.

4.Na3 c6 5.Nf3= Bf5 (5...cb5 6.Nb5 a6 7.Nc3=) 6.c4 (6.e3 Nf6=) 6...dc4 7.bc6 bc6 8.Qa4 e6? (better 8...Qd5!?=) 9.Bc3+- Ba3? (better 9...Nb7 10.Qc6 Qd7 11.Qd7 Kd7 12.Nc4 f6+-) 10.Qa3+- Nb7 (10...Ne7 11.Ba5 Qd5+-) 11.Bg7 Nf6 12.Bh8 Ne4 13.g4 Bg4 14.Rg1 f5 15.h3 Kf7 (15...Kd7 16.Be5 Bf3 17.Rg7 Kc8 18.Rc7 Qc7 19.Bc7+-) 16.Be5 Bf3 (16...h5 17.hg4 hg4 18.Rh1+-) 17.Rg7 Ke8 The mate threat is Qxd2 18.Rg8 (18.Rg8 Kf7 19.Rd8 Nd8 20.Qf3+-) 1–0. Maestro – Chabryl, internet, 2020.

4.Na3 e5 5.Be5 d4 6.Qc1 =.

4.Na3 Nf6 5.e3 e5 6.Be5? (better is 6.Nf3 Bd6 7.Be2+=) 6...Ba3–+ 7.Nf3 (7.Qf3 Bd6 8.Bf6 Qf6 (worse is 8...gf6 9.Qd5 Qe7 10.Nf3-/+) 9.Qf6 gf6–+) 7...Nc4 8.Bc3 Bg4 9.Be2 Qd7 10.Ne5 Be2 (10...Ne5 11.Be5 Be2 12.Qe2–+) 11.Qe2 (11.Nd7 Bd1 12.Nf6 gf6 13.Rd1 Bd6–+) 11...Ne5 12.Be5 Be7 13.c4 0-0 14.0-0 Qg4 15.Qg4 Ng4 16.Bc3? (better is 16.Bg3–+) 16...dc4 17.Rab1 Bf6 18.Bf6 Nf6 19.Rbc1 Ne4 20.Rfd1 Rad8 21.Rc4 Rd2?? 22.Rd2 Nd2 23.Rc7 g6 24.Rb7+= Ra8 25.a4 Nc4 26.Rd7? Nb6 27.Rd4 Rc8 28.g3 Rc4 29.Rc4 Nc4 30.Kf1 f5 31.Ke2 Kf7 32.Kf3 Ke6 33.e4? Ke5 34.ef5 Kf5 35.g4 Ke5 36.Kg3 Kf6 37.f4 Nd6 38.g5 Kf5 39.Kf3 Nb7 40.h3 Na5 41.Ke3 Nc4 42.Kf3 Nd2 43.Ke3 Nc4 44.Kf3 Nb6 45.a5 Nd5 46.h4 Nf4 47.b6 ab6 48.ab6 Nd3 49.b7 Ne5 50.Kg3 Nd7 51.Kf3 Nb8 52.Kg3 Nc6 53.Kf3 Nb8 54.Kg3 Nd7 55.Kf3 Nb8?? 56.Kg3= ½–½. Valpa – Coca, playchess.de, 2002.

4.a4 a6 5.e3 ab5 6.ab5 c6 7.Nf3+= f6 8.bc6 bc6 9.Nd4 Bb7 (better is 9...Bd7!?=) 10.Ne6+/- Qd7 (10...Qc8 11.Nf8 Kf8 12.d4+/-) 11.Nc5 Qd6?? (better is 11...Qc7 12.Bc3 Nc4+/-) 12.Nb7+- Qb4 13.Na5 Qb2 14.Nc3 Qb4 (14...Qb6 15.Nc4 Ra1 16.Nb6 Rd1 17.Nd1 e5+-) 15.Nc6 Ra1 16.Qa1 Qb7 17.Bb5 Kf7 18.0-0 e6 19.Rb1 Ne7 20.Ne7 Qe7 21.Bc6 Kg8 22.Rb7 Qd6 23.Qa4 h5 24.Rd7 Qb8 25.Qa7 Qa7 26.Ra7 Kh7 Bd7 e5 28.Bf5 Kh6 29.Be6 Bc5 30.Nd5 Ba7+= 31.Nc3 Rd8 32.d3 Rc8?? 33.Nb5 Rc2-/+ 34.g3 Bc5 35.Bf5? g6 36.Be6-/+ Kg5 37.h4 Kh6 38.d4 ed4 39.ed4 Bd6?? 40.Nd6+- Kg7 41.d5 f5 42.Nb7 Rc7 43.Nd6 Kf8?? 44.Nf7 Ke7?? 45.Ne5 Kf6 46.Kg2 Ke5=+ 47.Kf3 Rc3 48.Kg2 Rd3 49.Bf7 Kf6 50.Bg8 g5 51.hg5 Kg5 52.Be6 f4 53.gf4 Kf4 54.Bf7 h4 55.Be6 Ke5 56.Kh2 Kf4 57.Kg2 Rd2 58.Bd7?? Rd5–+ (58...Rd5 59.Be6 Rd6–+) 0–1. tanto (1715) – leventk, net–chess.com, 2002.

4.a4 a6 5.e3 ab5 6.ab5+= Bd7 7.Nf3 h6 (7...Nf6 8.Ne5+=) 8.Bd4 (8.Nc3!? Nf6 9.Bd3+-) 8...Nf6 9.Nc3 e6 10.Ne5 Bb4 (10...Bd6 11.Bd3+=) 11.Bd3 (11.Ra4 Bd6+=) 11...0-0 (11...c5 12.bc6 Nc6 13.Nd7 Kd7 14.Rb1+=) 12.0-0+- Bd6 13.Qf3 (better 13.f4!?+-) 13...c5 14.bc6 (14.Nd7? Nd7 15.Bg7 Kg7 16.Qg4 Qg5–+) 14...Nc6? (better 14...bc6 15.Na4 Qc7 16.Nd7 Nd7=) 15.Nc6+- (15.Nd7?! Nd7 16.Ra8 Qa8+=) 15...bc6 16.Ra8 Qa8 17.Bf6 gf6 18.Qf6 Qd8 19.Qh6 f5 20.Qg6 Kh8 21.Rb1 Qh4 22.g3 Qh7 23.Qh7 Kh7 24.Kg2 Kg6 25.h4 e5 26.Rb5?? (better 26.Rb6 Bc5 27.Ra6+-) 26...cb5–+ 27.Nd5 (27.Nb5 Bb4 28.Nc7 Bc6–+) 27...e4 28.Be2 (28.Bf1 Bc6 29.Nc3 b4–+) 28...Bc6 29.Nc3 b4 30.Nb5 Be7 (better 30...Be5!? 31.Kf1–+) 31.Nd4 Bd5 32.Bb5 (32.f4 Bc5 33.Kf2 Ra8–+) 32...Rb8 (better 32...Bf6 33.Ne2 Be5 34.Kh3–+) 33.Bd7 Rf8 34.Bb5 Rf6 (better 34...Bf6!? 35.Bc6 Rd8 36.Bd5 Rd5 37.Nb3–+) 35.Be8 Kh6 (35...Bf7!? 36.Bb5–+) 36.Bd7 Bc5 37.Nf5 Kg6 38.g4 Be6 (38...Ra6!? 39.h5 Kf7 40.h6–+) 39.Be6 (39.h5 Kf7 40.Be6 Re6–+ (40...Ke6?! 41.f3-/+)) 39...Re6 40.f3 (40.Kf1 Ra6 41.Ke2 Ra2–+) 40...ef3 (40...Ra6 41.h5 Kh7–+) 41.Kf3=+ Rb6 (41...Rc6 42.Ke2-/+) 42.d4 Bf8 43.e4?? (43.Ke2 Rc6 44.Kd1 Ra6=+) 43...b3?? (43...Rc6 44.Ne3 Rc2–+) 44.cb3= Rb3 (44...Ba3 45.e5=) 45.Kf4 White intends g5 45...Rb1 46.h5 Kf6? (better 46...Kf7=) 47.g5+- Ke6? (better 47...Kf7!? 48.g6 Kg8+-) 48.d5+- Kd7 49.g6 (49.g6 Rg1 50.e5+-) 1–0. Pierre – Joseph, internet, 2020.

4.a4 a6 5.e3 ab5 6.ab5+= Nf6 7.Nf3+=.

4.a4 b6 5.e3 Bf5 6.Be2 Nf6 7.Nf3 Nc4 8.Bf6 ef6 9.Bc4 dc4 10.Nd4 Be4 11.0-0 Bb7 12.f3 Bd6 13.Nf5 (13.Qe2 a6 14.Nc3 0-0+-) 13...Bc5 (better 13...Be5 14.Nc3 g6=) 14.Ng7+- Kf8 15.Nf5 Qd5 16.Nd4?? (better 16.Ng3+-) 16...Bd4–+ 17.ed4?? (better 17.Nc3 Bc3 18.dc3–+) 17...Qd4 18.Rf2 Qa1 19.Nc3 Qd1 20.Nd1 c6 (20...a6 21.Ne3–+) 21.Nc3 (21.Ne3 cb5 22.ab5 Rc8–+) 21...Rd8 22.Ne4 (22.Re2 Re8–+) 22...Kg7 23.c3 (23.Nc3 cb5 24.ab5 Bc8–+) 23...cb5 24.ab5 Be4 25.fe4 Rd3 (25...Rhe8 26.Re2–+) 26.Kf1 Rhd8 27.Ke1 R3d6 (27...Re8 28.Re2–+) 28.Re2 Kg6 29.g4 h5 (29...Re8 30.Kd1–+) 30.Rg2 (30.gh5 Kh5 31.Kd1 Re8–+) 30...Re6 31.gh5 Kh5 32.Re2 Rde8 33.Re3 (33.Kd1 Re4 34.Re4 Re4–+) 33...Re4 34.Kf2 Re3 35.de3 Re5 36.Kf3 Rb5 37.Ke4 Rc5 38.Kd4 a5 39.e4 a4 40.Ke3 a3 41.Kd2 (41.h3 a2 42.Kf4 a1Q 43.Ke3 Qf1 44.h4 Kg4 45.Kd2 Qd3 46.Kc1 Rb5 47.h5 Rb1) 41…a2 (41...a2 42.Ke3 a1Q 43.h3 Qf1 44.h4 Kg4 45.Kd2 Qd3 46.Kc1 Rb5 47.h5 Rb1) 0–1. Atotheking – Pascuas, lichess.org, 2019.

4.a4 Nc4 5.Qc1 e5 6.Na3 (6.e4 Nb2 7.Qb2 de4 8.Qe5 Qe7 9.Qe7 Be7-/+) 6...Na3 (6...Nb2 7.Qb2 Qf6 8.Nf3-/+) 7.Ba3=+ Ba3 8.Qa3 Nf6 9.e3 b6 (9...Ng4 10.h3 Nf6 11.Qc3=) 10.g3 (10.a5 e4=) 10...Ne4 (10...a6 11.a5 ab5 12.Bb5 Bd7 13.Bd7 Qd7 14.Qb2 ba5 15.Qe5 Qe7 16.Nf3=+) 11.d3 Nc5 12.Bg2 Bg4 13.f3 Bf5=+ 14.Ne2 0-0 15.0-0 Qg5 16.f4+= ef4 17.ef4 Qe7 18.d4 Bc2?? 19.dc5 Qc5?? 20.Qc5+- bc5 21.Rfc1 Bd3 22.Nc3 Rad8 23.Re1 d4 24.Be4?? dc3-/+ 25.Bd3 Rd3 26.Ra3 Rfd8–+ 27.Kg2 Rd2 28.Kh3 c2 29.Rc3?? Rd1 0–1. tanto – heyuneverno (1605), net–chess.com, 2001.

4.a4 Nc4 5.Bc3 d4 6.e3 dc3 7.Bc4 cd2 8.Nd2 e6 9.Ne2 g6 10.Ne4 Bg7 11.Qd8 Kd8 12.0-0-0 Ke7 13.Rd3 Nf6 14.Nf6 Bf6 15.Rhd1 Kf8 16.Nc3 Kg7 17.Ne4 Be5 18.f4 Bf6 19.Nf6 Kf6 20.Kb2 (20.e4 a6+/-) 20...b6 21.e4 Bb7 22.e5 Kf5 23.Rd4 Bg2? (better is 23...g5 24.Bd3 Kg4 25.fg5 Kg5+-) 24.h3! Bh3 (24...Bh3 25.Rg1 Mate attack) 25.Rg1 Bg4 (25...Bg2 26.Rg2 h5 27.Bd3) 26.Bd3 1–0. Speedy – wernt, internet, 2017.

4.a4 Nc4 5.Bc3 e5 6.d3 Nb6 7.e3 f6 (7...d4 8.ed4 ed4 9.Bb2 Bb4 10.Nd2=) 8.Be2 (8.d4 e4=) 8...Be6 (8...d4 9.ed4 ed4 10.Bb2 Bb4 11.Kf1=) 9.Bh5 g6 10.Bg4 Bg4 11.Qg4 Bd6 (11...a6 12.Nf3 ab5 13.Qe6 Qe7 14.Qe7 Be7 15.ab5 Ra1 16.Ba1=+) 12.Qe6 (12.a5 Nd7=) 12...Qe7=+ 13.Qe7 Ne7 14.Nf3 0-0-0 15.Nbd2 d4 (better 15...Nd7!?=) 16.ed4+- ed4 (16...Nbd5 17.de5 Nc3 18.ed6 cd6 19.Ne4 Ne4 20.de4+-) 17.Bb2 (17.Bd4 Nbd5+-) 17...Bc5 (17...Be5 18.Nb3+=) 18.0-0 f5 (18...Bb4 19.a5 (worse 19.Bd4 Rd4 20.Nd4 Bd2=+) 19...Na8 20.Ne4+-) 19.Rfe1 (19.Nb3 Bb4+-) 19...Ned5 (better 19...Rhe8+-) 20.Ne5 (20.a5!? Nd7 21.Bd4+-) 20...Rhf8 (20...Bb4 21.a5 Bd2 22.ab6 A) 22...Be1?? 23.ba7 c6 24.a8Q (24.Re1?! Kc7 25.Bd4 Rhe8+-) 24...Kc7 25.Qa7+- (25.Re1 Ra8 26.bc6 bc6-/+); B) 22...cb6=) 21.f4 (better 21.a5!? Nd7 22.Nef3+=) 21...Nf4=+ 22.Nef3 Nbd5 (22...Bb4 23.g3 Nh3 24.Kg2-/+) 23.Nc4 (23.g3 Nh3 24.Kg2 g5 25.Bd4 Ndf4 26.gf4 Nf4 27.Kf1 Bd4 28.Nd4 Rd4=+) 23...Ne3 (better 23...Nc3-/+) 24.Rac1?? (better 24.Ne3 de3 25.d4=) 24...Nc4–+ 25.dc4 Rfe8 (better 25...d3 26.Kh1 d2 27.Nd2 Rd2–+) 26.Re8 Re8 27.Bd4?? (better 27.Kf1 Re2 28.g3–+) 27...Ne2 28.Kf2 (28.Kf1 Nd4 29.Nd4 Bd4 30.Re1–+) 28...Bd4 29.Nd4 Nc1 30.c3 (30.Kf1 Na2 31.Nf3 Nc3–+) 30...Nd3 31.Kf3 Nc5 (31...Nb2 32.a5–+) 32.a5 Ne4 33.h4 (33.Ke3 Nc3 34.Kd3 Ne4–+) 33...Nc3 34.Kf4 (34.Nb3–+) 34...Re3!? 35.Kg5?? (35.Ke3 Kd7 Combination) 35...Re4–+ 36.Nf3 Rc4 37.Kh6 Rf4 (better 37...Rg4 38.b6 ab6 39.ab6–+) 38.Kh7 Nb5 (38...Rg4!? 39.Ne5 Rg2 40.Ng6–+) 39.Kg6 Rg4 40.Kf5 Rg2 41.Ne5 (41.h5 Nd6 42.Kf4 Ra2–+) 41...Nd6 42.Kf6 c5 (42...Ne8 43.Kf7–+) 43.Ke7 (43.h5 Rh2 44.Kg6 Re2–+) 43...Nf5 44.Ke6 Nh4 45.Kd5 Rg5 46.Kd6 c4! 47.Nc4 Rg6 (47...Nf3 48.a6–+) 48.Ke7 (48.Kd5 Nf3–+) 48...Ra6 49.Kf7 0–1. Akrapovik – Aboodmashagbeh (1650), lichess.org, 2020.

4.a4 Nc4 5.Bc3 e5 6.d3 Nd6 7.Be5 Qg5 (7...Nf6!?+=) 8.Nf3+/- Qf4?? (better is 8...Qh5+/-) 9.Bf4+- Nf5 10.e4 Nfe7 11.Bc7 Bg4 12.h3 Bh5 13.g4 Bg6 14.Nc3 Nf6 15.g5 de4 16.gf6 ef3 17.Qf3 Nc6 18.bc6 (18.bc6 Bb4 19.cb7+-) 1–0. Fritz11 – jumbo, casual, 2013.

4.a4 c5 5.e3 e6 6.Bd3 c4 7.Be2 a6 (7...Nf6 8.f4=) 8.Nf3+= Bd6?? (better 8...Nf6+=) 9.Bg7+- Qc7 (9...f6+-) 10.Bh8 f6 (10...Qe7 11.Nc3 f6 12.e4+-) 11.Nc3 h6 (11...Qe7 12.e4 Nh6 13.e5 fe5 14.Be5 Be5 15.Ne5+-) 12.Nh4 Be5 (12...Kd8 13.Bh5+-) 13.Bh5 Kf8 (13...Kd7+-) 14.Ng6 Ke8 15.Ne5 Ke7 16.Nf7 e5 17.Nd5 Kd7 18.Qg4 Ke8 (18...f5 19.Qf5 Ke8 20.Ne5 Qf7 21.Qf7 Kd8 22.Qg8) 19.Qg8 Kd7 20.Bg4 f5 21.Bf5 1–0. Pierre – Ginsen, internet, 2019.

4.a4 c6 5.e3 cb5 6.ab5 Nc4 7.Bc4 dc4 8.Qe2 (8.Nf3 Nf6+=) 8...Nf6 (better is 8...Qd5!? 9.Nf3 Qb5=+) 9.Qc4+/- Be6 10.Qa4 b6 (10...Bd5!? 11.f3 Be6+/-) 11.Nf3 Bd5 12.Nd4 (better is 12.d3!?+-) 12...Bg2= 13.Rg1 Be4 (13...Bb7 14.Nc6 Qd7 15.Nc3=) 14.d3 Bf3?? (better is 14...Bb7+/-) 15.Nf3+- e6 16.Nbd2 Bc5 (16...h6 17.Nc4+-) 17.Ne5 (better is 17.Rg7 Bf8 18.Rg2+-) 17...0-0 (17...Bf8+-) 18.Nc6 Qd6 19.Bf6 (19.Rg7 Kh8 20.Bf6 Qd4 21.Qd4 Rg8 22.Rg5 Rg7 23.Bg7 Kg8 24.Bh6) 19...Qd7 20.Rg7 Kh8 21.Rf7 (21...Kg8 22.Rd7 Rf6 23.Qh4 Be7 24.Ne7 Kf7 25.Ng8 Kf8 26.Qf6 Kg8 27.Qg7; 21.Rg6) 1–0. Grits – BeCarefool, Live Game Caissa's Web, 2004.

4.a4 e5 5.Be5 Bd6 6.Bg7 f6 (6...Be5 7.Be5 f6 8.Bc3+-) 7.Bh8 Be5 (7...Nh6 8.e3 Ke7 9.Bg7+-) 8.c3 (8.d4 Bd6 9.e4 Qe7 10.Qh5 Kd8 11.Qd5 Be6+-) 8...d4 9.e3 Be6 10.Qh5 Bf7 11.Qh7 dc3 12.Nc3 Nb3 13.Rd1 Qd7 14.Nf3 0-0-0 15.g3 Bc3 16.Bh3 Nd2 17.Bd7 Rd7 18.Nd2 Bd5 19.Qg6 Ne7 20.Qe8 Rd8 21.Qd8! Kd8 22.Ke2 Bh1 23.Rh1 Nd5 24.Rd1 Bb2 25.Nc4 Bc3 26.Rd5 (26.Rd5 Ke7 27.Kd3+-) 1–0. tanto – jkramer, net–chess.com, 2001.

4.a4 e5 5.Be5 Bf5 6.Bc3 c6 (6...c5 7.bc6 Nc6 8.e3+=) 7.Nf3 cb5 (7...c5 8.d4+/-) 8.ab5+/- b6 (8...Nc4 9.e3+/-) 9.Nd4 (better is 9.e3+-) 9...g6?? (better is 9...Bg6+-) 10.Nf5 gf5 (10...Nf6 11.Nd4 Ne4+-) 11.Bh8 1–0. Wall,Bill – Rgwrw, internet, 1999.

4.a4 Nf6 5.e3 Bg4 6.Be2 Be2 7.Ne2 Qd6 (7...e6 8.d3=) 8.d3+= c6 (8...a6 9.Bc3 b6 10.Nd2+=) 9.0-0 b6 10.Nd2 Rc8 (10...a6 11.Bc3+=) 11.Bc3 cb5 (11...e5 12.Nf3 Nd7 13.d4+=) 12.ab5+- Rc3 (better 12...e6!?+-) 13.Nc3+- e6 14.Ne2 Ng4 (14...Qc7 15.Nd4+-) 15.g3 (15.Ng3 Nf6+-) 15...h5 16.Nb3 (16.Nd4 f5+-) 16...h4 17.Nf4 (17.Na5 hg3 18.Ng3 Nh2+-) 17...Nh2 (17...Nb3 18.cb3 (18.Qg4?! Na1 19.Ra1 hg3 20.Qg3 Qc7=) 18...hg3 19.Qg4 gh2 20.Kg2+-) 18.Kh2 hg3 19.Kg2 g5 (19...e5 20.Na5 ba5 21.Nh5 gf2 22.Qg4+-) 20.Nh5 (worse 20.Na5 gf4 21.Nc6 Rh2 22.Kf3 d4 23.ed4 Qd5 24.Ke2 f3 25.Kd2 Bh6 26.Kc3 a5+-) 20...gf2 21.Rh1 Rh6 22.Qf3 (22.Na5 ba5 23.Kf2 Qb4+-) 22...f5 23.Ng7! Bg7 24.Rh6 Nb3 (24...Bh6 25.Qh5 Kd7 26.Na5 ba5 27.Qh6 Qb4 28.Qg7 Ke8+-) 25.Qh5 Kd8 26.Ra7 f1Q 27.Kf1 Nd2 (27...Qc5 28.Rh8! Bf8 29.Qf7 Nd2 30.Kg2 Qc6 31.Qf8 Qe8 32.Qe8) 28.Ke2 (28.Ke2 Qd7 29.Qg5 Ke8 30.Ra8 Kf7 31.Rh7 e5 32.Qg7 Ke6 33.Qg6) 1–0. Pereira – Trainee, internet, 2020.

4.d3 a6 5.ba6 ba6 6.Nd2 Nc6 7.c4 d4 8.g3 e5 9.Bg2 Bb7 10.Qa4 Nge7 (10...Qd7!?=) 11.Ba3 Qd7 12.Nb3 Rb8? (better is 12...Na5! 13.Qd7 Kd7 14.Nc5 Kc8 15.Nb7 Nb7+=) 13.Nc5+- Qc8 14.Nb7 Qb7 15.Be7 Qb2 (15...Ke7 16.Bc6 Qb2 17.Rd1+-) 16.Qc6 (16.Bc6?! Ke7 17.Qd1 Rb6+-) 16...Ke7 17.Qc7 Kf6 1–0. Chirica,Bogdan – Merchez,Laviniu, Centrocoop June op–A, 1999.

4.d3 a6 5.ba6 Ra6 6.g3 Bf5 7.Bg2 e6 8.Nf3 Nf6 9.0-0 Bd6 10.Nbd2 0-0 11.Nd4 Be5 12.f4 Bd4 13.Bd4 Nc6 14.Nb3 Nd4 15.Nd4 c5 16.Nf5 ef5 17.c4 Ng4 18.Qb3 (18.Bd5!? Ne3 19.Qb3-/+) 18...dc4–+ 19.Qb7? (better is 19.Qc3 cd3 20.ed3–+) 19...Qd4 20.Kh1 Re6 (20...Nf2 21.Rf2 Qa1 22.Rf1 Qa2 23.dc4 Qc4 24.Bf3–+) 21.Qf3 (better is 21.Bf3 Nf2 22.Kg2 cd3 23.ed3 Nd3 24.a4–+) 21...Rd8 22.e4 (22.dc4 Re3 23.Qb7 Re2 24.Qf3 Nf2 25.Kg1 Ne4 26.Kh1–+) 22...Qd3 (better is 22...Rh6 23.h4 cd3 24.ef5 Ne3–+) 23.ef5-/+ Qf3?? (better is 23...Qf5 24.Rad1 Ree8 25.Rd8 Rd8-/+) 24.Bf3+- Nh2 25.fe6 Nf1 26.ef7 Kf7 27.Rf1 Rd2 28.a4 c3 29.a5 Ra2?? (29...Kf6 30.Ra1 Rb2 31.Bd1+-) 30.Rc1 (better is 30.Bd5 Ke7 31.Ba2+-) 30...Ra5 31.Rc3 Kf6 32.Be4 g6 33.Kg2 h6 34.g4 g5 35.fg5 hg5 36.Kf3 Ke5 37.Rc4 Ra3 38.Ke2 Rg3 (38...Ra2 39.Kd3 Kd6+-) 39.Rc5?? (better is 39.Bf3 Kd6 40.Rc1+-) 39...Ke4= 40.Rg5 Kf4 41.Rg8 Rg4 ½–½. oddbins – hardcoremachine, gameknot.com, 2013.

4.d3 b6 5.e3 Nf6 6.c4 dc4 7.dc4 Qd1 8.Kd1 Bf5 9.Nd2 (9.Ke1 e6=) 9...e6 (9...0-0-0 10.Ke1=) 10.a3 (10.Ngf3 0-0-0 11.Ke1 Bb4=) 10...Be7 11.f3 (11.Ke1 a6=) 11...0-0-0=+ 12.Kc1? (better 12.Ke1=+) 12...Bc5-+ 13.e4 Bg6?? (better 13...Be3 14.ef5 Rd2-+ (worse 14...Bd2 15.Kc2+=)) 14.Bc3 (14.Kc2 Rd7=+) 14...Nb7 (14...Be3 15.Kc2=+) 15.Ne2 (15.Nb3 Be3 16.Kb2 Rd7=) 15...Rd7 16.Kc2 (16.Nf4 Be3 17.Ng6 fg6=) 16...Rhd8-/+ 17.Nf4 (17.Nb3 Be3=+) 17...Be3 18.Ng6 hg6 (better 18...Rd2 19.Bd2 Rd2 20.Kc3 Rd7-/+) 19.Nb3+= Kb8 20.Be2 Ne8 (20...Nc5 21.Rhd1+=) 21.Rhd1 Bf4 (21...Nc5 22.Rd7 Rd7 23.Nc5 Bc5 24.Bd3+/-) 22.g3 Bd6? (22...Be3 23.Rd7 Rd7 24.f4+/-) 23.f4 White plans e5 (23.Nd4!? Nc5+-) 23...Nc5 (23...Be7 24.Nd4 Na5 25.Nf3 Rd1 26.Rd1 Rd1 27.Kd1+/- (worse 27.Bd1 Nc4 28.Be2 Na3 29.Kb3 Nd6 30.Ka3 Nb5 31.Kb2 Nc3 32.Kc3 Kb7+=)) 24.e5 (24.Nd4 Ne4 25.Nc6 Kc8+-) 24...Be7 (better 24...Nb3!? 25.Kb3 Be7+/-) 25.Nd4+- Kc8 26.Nc6 Bf8?! (26...Rd1 27.Bd1 (27.Ne7?! Kd7 28.Rd1 Ke7+-) 27...Rd7 28.Na7 Kb7 29.Nc6+-) 27.Na7 (better 27.Nd8!? Rd8 28.Rd8 Kd8 29.Rd1 Kc8+-) 27...Kb7 28.Nc6 Rd1 29.Bd1 Rd7 30.Bf3 Kc8 (30...Rd3 31.Nd4 Kc8 32.Bc6+-) 31.a4 Nb7 (31...Rd3 32.Bg4 f5+-) 32.a5 Bc5 (32...ba5 33.Na5 c6 34.bc6 Nc5 35.cd7 Nd7+-) 33.a6 Nd8 34.a7 (34.a7 Rd2 35.Bd2 Nc6 36.Bc6 Kd8 37.a8Q Ke7 38.Qe8) 1-0. zembelek (2125) - tarn (2045), Rated Blitz game, lichess.org, 2013.

4.d3 b6 5.g3 Nb7 6.Bg2 e6 7.Nf3 Bd7 8.c4 Nf6 9.0-0 c6 10.Ne5 cb5 11.Nd7 Qd7 12.Bf6 gf6 13.cd5 ed5 (13...Rc8!?+=) 14.Nc3+/- 0-0-0 (better is 14...d4!? 15.Nd5 Bg7+/-) 15.Nd5+- (15.Bd5?! b4 16.Bb7 Kb7+=) 15...Bg7 (15...Kb8 16.Rb1+-) 16.Qc2 (16.Rc1 Kb8+-) 16...Kb8 17.Rfc1 Rc8 18.Qd2 f5 19.Rab1 Nc5?? (19...Rhe8 20.Nb4 Nc5 21.Qf4 Be5 22.Qf3+-) 20.Nb4 (better is 20.Qf4 Rc7 21.d4 Bd4 22.Qd4 Rd8+-) 20...a5? (better is 20...Qd6+-) 21.Rc5! Rc5 (21...bc5 22.Na6 Double attack; 21...Rc5 22.Na6 Double attack (22.Na6 Decoy)) 22.Na6 Ka7 23.Nc5 bc5 24.Qa5 Kb8 25.Rb5 Kc8 26.Rc5 Kb8 27.Qa8 1–0. jboger (2210) – geldridge (2255), net–chess.com, 2013.

4.d3 c6 5.a4 cb5 6.ab5 e6 7.Qd2 b6 8.Nf3 Nf6 9.Nd4 Bc5 10.Nc6 (10.e3 Bd7=) 10...Nc6=+ 11.bc6 0-0 12.g3 (12.Qf4 d4=+) 12...Qc7 (12...e5 13.Bg2-/+) 13.Bf6=+ gf6 14.Qh6 f5 (14...Be7 15.Ra4 e5 16.Rh4=+) 15.Qg5= Kh8 16.Qf6 Kg8 17.Qg5 Kh8 18.Qf6 Kg8 19.Qg5 Kh8 20.Qf6 (20.Qf6 Kg8=). GuestWDDQ – GuestVLGP, freechess.org, 2017.

4.d3 c6 5.a4 Qc7 6.Nf3+= f6 7.e3 (7.g3 e5+=) 7...e5= 8.Be2 (8.Qd2 Nh6=) 8...Bb4 9.Nbd2 Ne7 10.0-0 0-0 11.c4 Bd6 (11...dc4 12.dc4 Bf5 13.e4=+) 12.cd5= Nd5 13.d4 (13.Ne4 Bb4 14.d4 ed4 15.Nd4= (worse 15.Qd4 Nb3 16.Qc4 Na1=+)) 13...Ne7?? (better 13...ed4 14.Bd4 c5=) 14.de5+- fe5 (better 14...Be5!? 15.Ne5 fe5+-) 15.Ne4+- Ng6 1–0. GuestRJVX – guestKHKSU, freechess.org, 2019.

4.d3 c6 5.a4 Nf6 6.Nd2 Qc7 7.Ngf3 Bf5 8.e3 Nd7 9.Be2 e5 10.0-0 Bd6 11.Nh4 Bg6 (11...Be6 12.Bg4=) 12.g3 (12.c4 e4 13.de4 Bh2 (worse is 13...Be4 14.f4+/-) 14.Kh1 A) worse is 14...Be4 15.cd5 cd5 16.Ne4 de4 17.g3+/- (17.Bg7?! Rg8 18.Rc1 Qd8+/-); B) 14...de4=) 12...0-0 13.Ng6 hg6 14.Rc1 c5 (14...Rfd8 15.d4=) 15.c3 b6 (15...a6!?=) 16.Bf3+/- Nf6 17.e4 (17.c4 a6+/-) 17...d4 (better is 17...c4!? 18.ed5 cd3+=) 18.cd4+/- ed4 (18...Rfd8 19.Bg2 Qe7 20.dc5 Bc5 21.Nf3+-) 19.Bd4! Be5 (19...cd4 20.Rc7 Pinning (20.Rc7 Deflection)) 20.Be5 Qe5 21.Qc2 Rad8 22.Be2 Qe6 23.Kg2 Nh7 24.Nf3 Nb3 25.Rcd1 Nd4 26.Nd4 Rd4 27.f4 Rfd8 28.e5 Qd7 29.h4 c4? 30.dc4+- Rd2 31.Rd2 Qd2 32.Rc1 Nf8 33.Kf3 Ne6 34.Qd2 Rd2 35.Ke3 Ra2 36.Bd1 Ra3 37.Kf2 Nc5 38.Kg2 Nd3 39.Rb1 Ne1 40.Kh3 Nd3 41.Bb3 Nf2 42.Kg2 Ne4 43.Rb2 Kf8 44.g4 Nc5+/- 45.Bc2 Rc3 46.g5 Rc4 47.Kg3 Ne6 48.f5 Rc3 49.Kg4 Rc4= 50.Kg3 ½–½. Bartle,Georg (1680) – Iken,Meindert, Wch Seniors, 2003.

4.d3 c6 5.bc6 Nc6 6.g3 Nf6 7.Nd2=+ e5 8.Ngf3 Bd6 9.Bg2 Bg4 10.0-0 Qd7 11.Rc1 Bh3 (11...0-0!?=) 12.Bh3+= Qh3 13.c4 d4 14.c5 Bc7 15.Qb3 Qc8 (better 15...Rb8!?+=) 16.e3+- de3 17.fe3 0-0 18.Nc4 e4 (18...Qe8!?+-) 19.Ng5+- Bd8 (19...h6 20.Rf6 gf6 21.Ne4 Bd8+-) 20.Bf6 Bf6 21.Nd6 Qc7 22.Nge4 Bd8 (22...Be5 23.Rc2+-) 23.Rf4 b6 (23...Na5 24.Qd5 Qc6+-) 24.Rcf1 Ne5 (24...Bf6+-) 25.d4 Ng4 (25...g5 26.Rf5 bc5+-) 26.Rf7 (26.Rf7 Qf7 27.Rf7 Nh6 28.Rf1 Rf7 29.Nf7 g6 30.Nfg5 Kg7 31.Rf7 Kg8 32.Ra7 Kf8 33.Nh7 Ke8 34.Nd6) 1–0. Janek – Jenna, internet, 2019.

4.d3 Bd7 5.a4 c6 6.Qd2 b6 7.e4 Nf6 8.e5 Ng4 9.h3 (better is 9.Nf3=) 9...Ne5 (better is 9...Nh6=) 10.Be5+- cb5 11.ab5 Nb7 (better is 11...Bb5 12.Nf3 f6+-) 12.d4 Nd6 (12...e6 13.Bd3+-) 13.Bd6 ed6 14.Nc3 Be6 15.g3 Qe7 (15...Qd7 16.Bg2 Rc8 17.Qd3+-) 16.Bg2 (16.Nge2 Rc8+-) 16...Bh3 (16...Qb7 17.Nge2+-) 17.Kf1 Bg2 18.Kg2 0-0-0 (18...Qb7 19.Qg5 Be7 20.Qg7+-) 19.Nf3 Qe6 (19...Qb7+-) 20.Ra7 f5 (20...g5 21.Nd5! Kb8+-) 21.Rha1 Rd7 22.Ra8 Kb7 23.R1a7 1–0. nordlicht – Master1, Kleines Blitz–Turnier, 2004.

4.d3 Bd7 5.a4 c6 6.e4 cb5 (better 6...de4!? 7.de4 Nf6=) 7.ab5+= Bb5 8.ed5 Qd5?? (better 8...Nf6+=) 9.Ra5+- Qe6 (9...b6 10.Ra1+-) 10.Ne2 a6 (10...Qb6 11.Ra2+-) 11.Na3 Qd7 (11...Bd7 12.Re5 Qc6 13.f4+-) 12.Nb5 ab5 (12...b6 13.Be5 Rc8 14.Nc7 Rc7 15.Ra6 Rc8+-) 13.Ra8 (13.Ra8 Qd8 14.Rd8 Kd8 15.Qa1+-) 1–0. DEFFM – malega, freechess.org, 2019.

4.d3 Bd7 5.a4 c6 6.Nf3 cb5=+ 7.ab5 Bb5 8.g3 (8.e4 de4 9.Ne5 Nf6=+) 8...Nf6 9.Bg2 e6 10.0-0 Be7 11.Qd2 Nc6 12.c4 (12.Rc1 Ba6=+) 12...dc4 13.Qg5 (better 13.Na3 Ba3 14.Ra3 cd3 15.ed3-/+) 13...0-0?? (better 13...a6 14.Na3 h6–+) 14.Qb5+- cd3 15.Rd1 Qc7 (15...Qd5 16.Qd3 (worse 16.Qb7 Rab8 17.Qa6 Rb2-/+) 16...Qd3 17.Rd3+-) 16.Rd3 a6 17.Qc4 Nd5 (17...Rfc8 18.Qh4+-) 18.Nd4 (18.Nc3 Ndb4 19.Rdd1 Rfd8+-) 18...Qb6 (18...Nd4!? 19.Qc7 A) 19...Nc7? 20.Bd4 (worse 20.Rd4 Rfd8+-) 20...Nb5 21.Be5+-; B) 19...Ne2 20.Kf1 Nc7+-) 19.Rb3 (19.Bd5 Qb2 20.Qc3 Qc3 21.Nc3 ed5 22.Nd5 Bc5 23.Nc6 bc6-/+) 19...Qa7 (19...Qc5 20.Bd5 ed5 21.Qc5 Bc5 22.Nf5+-) 20.Nc6 bc6 21.Qc6 a5 (21...Rfc8 22.Qa4 Bf6 23.Bf6 Rc1 24.Bf1 Nf6 25.Qa6 Qa6 26.Ra6+-) 22.Nc3 Nc3 (22...Bc5 23.e3 Rac8 24.Qb7 Nc3 25.Rc3+-) 23.Bc3 (23.Qc3!? Bf6 24.Qe1 Bb2 25.Rb2 Rab8+-) 23...a4 24.Rb7 Qa6 (24...Qc5+-) 25.Qa6 Ra6 26.Re7 a3 (26...h6 27.Bb7 Ra7 28.Bb4+-) 27.Ra2 (27.Rb7 Rd8+-) 27...Rb8 28.Bb4 h5 (28...h6 29.Be4+-) 29.Ra3 Ra3 30.Ba3 Rb1 31.Bf1 1–0. DEFFM – GuestGMTZ, freechess.org, 2018.

4.d3 Bd7 5.Bc3 b6 6.a4 Nf6 7.Qd2 e6 8.Ba5 ba5 9.Qa5 Bd6 10.Qd2 0-0 11.h3 (11.c4 a6 12.Qb2 ab5 13.cb5 c5-/+) 11...Qe7 12.g4 d4 (12...a6!? 13.g5 Nh5 14.ba6 Ra6-/+) 13.c3 Nd5 14.Nf3 (14.Bg2 dc3 15.Qc1 c6 16.bc6 Bc6 17.Bd5 ed5–+) 14...e5 (14...dc3!? 15.Qc2 a6-/+) 15.Kd1= (15.cd4?? Bb4 16.Ne5 Bd2 17.Nd2 Nb4–+) 15...dc3 16.Nc3 Bb4?? (better 16...Nc3 17.Qc3 c6=+) 17.Nd5+- Bd2 (17...Qc5 18.Nb4 Qf2 19.Qc3+-) 18.Ne7 (18.Ne7 Kh8 19.Kd2+-) 1–0. beatmeeasy (1895) – xdfubar (1880), lichess.org, 2020.

4.d3 e6 5.Nd2 Qf6?? 6.Bf6+- Nf6 7.e4 Bb4 (7...de4 8.de4 Bd6 9.Ngf3+-) 8.Rb1 Bc3 (8...Be7 9.e5 Nd7 10.d4+-) 9.Ne2 Bd2 10.Qd2 de4 (10...b6 11.e5 Nd7 12.d4+-) 11.Qa5 0-0 12.de4 1–0. Janek – terfig, internet, 2017.

4.d3 e6 5.Nf3 c6 6.a4 b6 7.g3 (7.e3 Bd7=) 7...c5 (7...cb5 8.ab5 Bd7 9.Nbd2 Bb5 10.Bg2=+) 8.Bg2= Bd7 (8...Nf6!?=) 9.0-0 Nb7 (9...Nf6 10.Ne5+=) 10.Nbd2 (10.c4 Nf6+-) 10...Nh6 (10...Nf6 11.c4+=) 11.Ne5 Bc8 12.c4 d4 (12...Na5 13.Nb3 Nb3 14.Nc6+-) 13.Bc6 Ke7 14.e3 (14.a5 ba5 15.Ne4 Qc7 16.Bb7 Bb7 17.Nc5 Qe5 18.Nb7 Ke8+-) 14...f6+- 15.ed4 (15.Qh5!? g6 16.Qf3+-) 15...fe5+= 16.dc5 bc5 17.Qh5 (17.a5 Rb8 18.Be5 Nd6+-) 17...Nf7 18.f4 Rb8?? (18...Qd3 19.Ne4 Bd7 20.Bb7 Rb8 21.Nc5 Qe3 22.Kh1 Kd8+-) 19.fe5+- g6 20.Qh4 g5 21.Qh5 Nh6 22.Qg5 1–0. Maestro – Hurma, internet, 2020.

4.d3 e6 5.Nf3 Nf6 6.e3 c5 7.Be2 Bd6 8.c4 Bd7 9.Nc3 a6 10.a4 0-0 11.0-0 b6 12.Nd2 d4 13.ed4 cd4 14.Na2 (14.Nce4 Ne4 15.Ne4 Bf4=) 14...e5 15.Bf3 Ra7 16.Nc1 Bf5 17.Ndb3 Nb3 18.Nb3 Bc5 (better is 18...Bb4!?+=) 19.Nc5= bc5 20.Bc6 e4 21.Re1 ed3 (21...Re7 22.a5=) 22.Re5+= Bd7 23.Rc5 ab5 24.cb5 (24.ab5?! Ra1 25.Ba1 Re8=) 24...Ra5? (better is 24...Bc6!? 25.bc6 Ne4+-) 25.Bd7 Qd7 26.Qd3 Rd8 27.Rc4 Qg4 (27...Re8 28.Bd4 Raa8 29.Rd1+-) 28.f3 (28.Rd4 Rd4 29.Qd4 Qd4 30.Bd4 Ne4+-) 28...Qf4 29.Bc1 Qd6 30.Bd2 Ra7 31.Bb4 Qd5 32.b6 Ra6 33.Bc5 Nd7 34.Bd4?? Nb6?? 35.Rb4+/- Nc8?? 36.Qa6+- Ne7 37.Rc4 h6 38.Qb5 Qb5 39.ab5 Nd5 40.b6 Rb8 41.b7! Rb7 42.Ra8 Kh7 43.h4 Rb6 44.Bb6 Nb6 45.Rac8! Nc4 46.Rc4 g6 47.Kf2 h5 48.f4 f5 49.g3 Kg7 50.Ke3 Kf6 51.Rc6 Kf7 52.Kd4 Kg7 53.Ke5 Kf7 54.Rf6 Kg7 55.Ke6 Kh7 56.Kf7 Kh6 57.Rg6 Kh7 58.Rg5 Kh6 59.Rf5 Kh7 60.Rh5 1–0. Vaast,Jean – Cazal,Vincent, Reunion op St Denis, 2008.

4.d3 Nf6 5.Nd2 b6 6.e3 e6 7.Ngf3 Be7 8.Be2 0-0 9.0-0 Nb7 10.Rc1 (10.Ne5 a6 11.Nc6 Qe8 12.Ne7 Qe7=) 10...Nd6 11.c4 dc4 (11...a6 12.Qb3=) 12.dc4 Bb7 13.Qc2 Nde4 (13...a6 14.Bd3+=) 14.Nb3 (14.Bd3 Nd2 15.Nd2 h6+=) 14...Nc5 (14...a6!?=) 15.Rfd1 Qc8 (better 15...Qe8 16.Ng5 Nb3 17.ab3 g6+/-) 16.Nbd4 (better 16.Nc5 bc5 17.Ng5+/-) 16...a6 17.Nc6 Bc6 18.bc6 Rd8 19.Ne5 Rd1 20.Rd1 Qe8 21.Bf3 Rd8 22.Rd2 Rd2 23.Qd2 Qd8 24.Bd4 Nce4 25.Qc2 Nd6 (25...Nc5 26.Bc5 Bc5 27.Nd3=) 26.c5+= bc5 27.Bc5 Qb8 (27...Nb5 28.Be7 Qe7 29.Qb2+=) 28.g3 (28.Be2 Qa8+/-) 28...Qb5+= 29.Be2 Qa5 30.a3 (30.Bd3 g6+=) 30...Nfe4= 31.Bb4?? (better 31.Bd6 Qe1 32.Bf1=) 31...Qb6?? (better 31...Qe5 32.Ba6 f5-+) 32.Nd7 Qa7 33.Kg2 (33.Bd3!? a5 34.Qa4 f5+-) 33...a5+/- 34.Bd6 (34.Qa4 Qa8 35.Bf3+/- (35.Ba5 Nc3 36.Qb3 Ne2 37.Qb8 Qb8 38.Nb8 Ne8-/+)) 34...Nd6+= 35.Bd3 h6 36.Ne5 (36.Qa4 Qa8+=) 36...Bf6 37.Nc4 (37.Bh7 Kh8 38.Nd7 Be7=) 37...Nc4 38.Qc4 (worse 38.Bc4 Qc5=+) 38...Qb6 39.f4?? (better 39.h3!?+=) 39...Be7 (39...Qe3!? 40.Qe4 Qd2 41.Be2 Qa2-/+) 40.Kf3=+ Ba3 41.Qe4 (41.Qb5!? Bc5 42.Qb6 Bb6 43.Bb5=+) 41…Bd6 0-1. bjoern (2050) - sopanka (2130), Rated Bullet game, lichess.org, 2014.

4.d3 Nf6 5.Nf3 Bg4 (5...a6 6.a4=) 6.Ne5 Qd6 (6...Bf5 7.Qd2 c5 8.Bc3=) 7.Qd2+= b6 8.f4 (8.e4 a6+=) 8...e6 (8...a6 9.e4=) 9.Ba3 (9.e4 a6 10.Ng4 Ng4+=) 9...c5 10.bc6 Qc7 11.Bf8 Kf8 12.Qb4 (12.h3 Bh5+=) 12...Kg8= 13.Na3 (13.h3!? Bf5 14.g4=) 13...Nc6=+ 14.Qc3 Rc8 15.Nb5 Qb7 (15...d4!? 16.Qc6 Qc6 17.Nc6 Rc6+/-) 16.Nd6+/- Qc7?? (better is 16...Ne5 17.Nc8 Ng6+/-) 17.Nc8+- Qc8 18.Qc6 Qd8 19.e3 g6 20.h3 Bf5 21.g4 Bd3 22.Bd3 Kg7 23.h4 Qb8 24.g5 Rc8 25.gf6 Kf6 26.Nd7 (26...Kg7 27.Nb8 Rc6 28.Nc6+-) 1–0. Fredek (2090) – Guest489968, Freundschaftspartie, 5m + 0s, 2005.

4.e3 Qd7 5.a4 c6 6.c4 (better 6.Nf3!?=) 6...Nc4-/+ (6...dc4?! 7.Na3=) 7.Bc4 (7.bc6 Qc6 8.Bd4 f6-/+) 7...dc4 8.Nc3 cb5 9.ab5 a6 (9...Nf6 10.Nf3 Nd5 11.Nd5 Qd5 12.b6-/+) 10.ba6 (10.Qa4 e5=+) 10...ba6 11.Qe2 (11.Nf3 f6-/+) 11...Bb7 (11...Qb7 12.Qf3-/+) 12.Nf3 Bd5 (12...Qd3!?-/+) 13.0-0 (13.Ne5 Qb7 14.Nd5 Qd5+/-) 13...Nf6 (13...f6!?=) 14.Ne5+= The isolani on c4 becomes a target 14...Qc7 (14...Qe6!? 15.Nd5 Qd5 16.Nc4 Qc6+/-) 15.Nd5+/- Nd5 16.Nc4 (better 16.Nf7 Rg8 17.Ne5+-) 16...f5? (16...e6 17.Rfc1+/-) 17.Be5 (17.Ne5 Nf6+-) 17...Qb7 (better 17...Qc6!?+/-) 18.Rfb1 Qc6 19.h3 (19.Bd4 Nf6+-) 19...Qc5? (19...e6!?+/-) 20.d4 (20.Qh5!? g6 21.Qh4 Rg8+-) 20...Qc6 21.Na5 Qg6 22.Qc4 Nf6?? (22...Qe6+-) 23.Qc6 Kf7 24.Qa8 Ne4 (24...Qh5 25.Nc6 f4 26.Nd8 Kg6 27.ef4+-) 25.Nb7 Nd2 (25...Kg8 26.Ra6 Nf6+-) 26.Nd8 Ke8 27.Ra6 Nb1 (27...Nf3 28.Kh1 Qg2 29.Kg2 Ne1 30.Kf1 e6 31.Qc6 Ke7 32.Qe6 Kd8 33.Rb8) 28.Rg6 (28.Ne6 Kf7 29.Ng5 Kg8 30.Rg6 hg6 31.Qd5 e6 32.Qe6) 28...hg6 (28...Nc3 29.Qc6 Kd8 30.Bc7 Kc8 31.Bb6 Kb8 32.Qc7 Ka8 33.Qa7) 29.Nc6 (29.Nc6 Kd7 30.d5 Rh3 31.Qd8; 29.Ne6 Kf7 30.Ng5 Kg8 31.Qd5 e6 32.Qe6) 1-0. Fuirio – dolakers, Rated Classical game, lichess.org, 2013.

4.e3 Qd7 5.d3 Qb5-/+ 6.c4?? (better is 6.Be5-/+) 6...Qb2–+ (7.Nd2 dc4 8.dc4 e5–+) 0–1. edfdo – TREA, Live Game Caissa's Web, 2004.

4.e3 Qd7 5.Nf3!?=.

4.e3 Be6 5.Nf3 Nc4 6.Bc4 dc4 7.0-0 Nf6 8.Qe2 Qd5 9.Nd4 0-0-0 (9...Bc8 10.Nc3 Qd6 11.Qc4+-) 10.a4 (better 10.Ne6 Qe6 11.Na3+-) 10...b6? (better 10...Bd7+=) 11.a5+- Bg4 (11...Rd7 12.Na3+-) 12.f3 Bh5 (12...Bd7 13.ab6 ab6 14.Nc3+-) 13.ab6 ab6 14.Nc6 Rd6 (14...Re8+-) 15.Ra8 Kd7 16.Rd8 Ke6 17.Nd4 Ke5 (17...Qd4 18.ed4 Kf5 19.g4 Kg6 20.Rd6 cd6 21.Qc4 d5 22.gh5 Kg5+-) 18.f4 Ke4 19.Nc3 1–0. onur604 (2320) – ThiccBoiBebo (2005), lichess.org, 2020.

4.e3 f5 5.Nf3 e6 6.Ne5 Nf6 7.a4 (7.Be2 Bd6+=) 7...Be7 8.c4 (8.Be2 0-0+=) 8...dc4 9.Nc4 Nc4 10.Bc4 0-0 11.0-0 Qd6 (11...a6 12.Qb3+=) 12.Ba3 c5 (better 12...Qd7!?+=) 13.bc6!+- Qd8 (13...bc6 14.Bd6 Combination; 13...Qc6 14.Be7 Pinning (14.Be7 Deflection)) 14.Be7 (better 14.cb7!? Bb7 15.Be6 Kh8 16.Bf5+-) 14...Qe7+/- 15.cb7 Bb7 16.Nc3 Ng4 (16...Rab8 17.Rb1+/-) 17.h3 (17.Qb3!? Rf6 18.Rfb1+/-) 17...Ne5+= 18.Ba2 Kh8 (18...Rae8 19.Qe2+/-) 19.d4 Nd7 (19...Qg5 20.d5 Qg6 21.Rb1+/-) 20.Nb5 (20.Qb3 Ba6 21.Rfc1 Rfe8+-) 20...a6 (better 20...e5!?+/-) 21.Nc7+- Rac8 (21...Rab8 22.Ne6 (22.Be6?! Rfc8+=) 22...Rfe8 23.Qh5+-) 22.Ne6 Rf6 23.Nf4 Nb6 (23...Be4 24.Qh5+-) 24.Qb3 Qe4 (24...Nc4 25.Rab1 Rb6 26.Qc3+-) 25.f3 (25.Rfc1 Rb8+-) 25...Qe7 26.Rac1 (26.Rfe1 g5 27.Nh5 Bd5+-) 26...Rcf8 (26...Rd8 27.Rfe1 Nd5+-) 27.a5 Na4 (27...Na8+-) 28.Ne6 Re6 29.Qe6 (29.Qa4?! Re3 30.Rc5 Bf3 31.Rf3 Rf3 32.gf3 Qe1 33.Kg2 Qe2 34.Kg1 Qe1 35.Kh2 Qf2 36.Kh1 Qf1 37.Kh2 Qf2 38.Kh1 Qf1 39.Kh2 Qf2=) 29...Qg5 (29...Qd8 30.Qe5 Re8 31.Be6+-) 30.Qd6 (better 30.Rc7!? f4 31.Rb7 fe3+-) 30...Qe3 (30...Rd8 31.Qa3 f4 32.ef4 Qf4 33.Qa4 Qe3 34.Kh1+-) 31.Kh1 Re8 32.Qd7 Rb8 (32...Qe7 33.Qa4 Ba8 34.Rce1 Qe1 35.Re1 Re1 36.Kh2+-) 33.Qa4 (better 33.Rfe1 Nc5 34.dc5 Qc1 35.Rc1 Rf8+-) 33...h6 (33...Bf3 34.gf3 Qh6 35.Qc2 Qh3 36.Qh2 Qh2 37.Kh2+-) 34.Rce1 Qd2 (34...Qf4 35.Re8 Kh7 36.Bg8 Kh8 37.Be6 Kh7 38.Rb8 Qb8 39.Bf5 g6 40.Qd7 Kh8 41.Bg6 Qg8+-) 35.Re8 Re8 36.Qe8 Kh7 37.Qe6 (37.Bg8 Kh8 38.Bf7 Kh7 39.Qg8) 37...Qd3 (37...Qd4 38.Re1 Qf6 39.Qg8 Kg6 40.Re6 Ba8 41.h4 Kh5 42.Rf6 Kh4 43.Qg7 Bf3 44.Rh6 Bh5 45.g3 Kh3 46.Rh5) 38.Qg8 (38.Re1 Qf1 39.Rf1 Bd5 40.Qf5 Kg8 41.Qd5 Kh7 42.Qf7 h5 43.Qh5) 38...Kg6 39.Qf7 Kh7 40.Qb7 (40.Re1 Bc8 41.Re8 Qf1 42.Kh2 Qg2 43.Kg2 Bd7 44.Re7 f4 45.Qg7) 40...Qf1 41.Kh2 Qe2 (41...h5+-) 42.Qf7 (42.Bf7 Qb5 43.Qc8 Qb8 44.Qb8 h5 45.Qg8 Kh6 46.f4 h4 47.Qh8) 42...Qd3 43.Be6 (43.h4 Qa3 44.Qf5 Kh8 45.Qc8 Kh7 46.Bg8 Kh8 47.Bf7 Qf8 48.Qf8 Kh7 49.Qg8) 43...Qd4 44.Bf5 Kh8 45.Qf8 (45.Qe8) 1-0. iamdudum (1605) – coolnovo, Rated Classical game, lichess.org, 2013.

4.e3 Nf6 (--> 1.b4 Nf6 2.Bb2 Nc6 3.b5 Na5 4.e3 d5).

4.Nf3 b6 5.d3 c6 6.bc6 Nc6 7.Nbd2 Nf6 8.e3 Bf5 9.Be2 e6 10.0-0 Bb4 11.a3 Ba5 12.c4 dc4 13.dc4 (13.Nc4 0-0+/-) 13...Bg4 (13...Rc8!?=) 14.Nb3+= Qd1 15.Rad1 Bf3 (better 15...Rc8!?+=) 16.Bf3+- (16.gf3?! Ke7+=) 16...Rc8 17.Bf6 (17.Rd6!? Nb8 18.Bf6 gf6 19.Na5 ba5+/-) 17...gf6+/- 18.Na5 (better 18.c5!?+/-) 18...Na5= 19.Be2 Ke7 20.Rc1 (20.Rd4 Rhd8 21.Rfd1 Rd4 22.Rd4 e5=+) 20...f5 21.Rfd1 Nb3 22.Rb1 Nc5 23.Bf3 e5 24.Rd5 e4 25.Be2 Ke6 26.Rbd1 Rc6 27.Rd7?? (27.Kf1 Rg8=) 27...a5 (27...Nd7 28.Rd4-+) 28.Rb7?? (28.R7d5 Na4 29.Rc1 Rhc8=) 28...Na4 (better 28...Nb7 29.Rd4 Nd6-+) 29.h3 Nc3 30.Rd2 Ne2 31.Re2 Rc4 32.Rb6 Ke7 33.Rb7 Kf6 34.Rb6 Kg5 35.g3 Rd8 36.h4 (36.Reb2 Ra4 37.R2b3 Rd1 38.Kg2 f6=) 36...Kg4=+ 37.Rb7?? (37.Re1 Rc3=+) 37...Kh3 (37...Rc1 38.Kh2 Rdd1 39.f3 ef3 40.Rb4 ab4 41.Re1 Rd2 42.Re2 Re2) 38.Re1= Rd2 39.Rf7 Rcc2 (39...Rd3!?+=) 40.Rf5+/- (40.Rh7?? Rf2 41.Rd7 Rg2 42.Kh1 Rh2 43.Kg1 Rcg2 44.Kf1 Rh1) 40...Ra2 41.g4 (better 41.Rf4 Rd5 42.Re4+-) 41...Kg4 42.Rf4 Kh3 43.Rf1 (43.Re4 Rf2 (43...Ra3 44.Rf4+/-) 44.Rd1 Rg2 45.Kf1 Kh2 46.Rg4 Rgf2 47.Ke1 Rae2) 43...Ra3 44.Kh1?? (better 44.Re4 Rd8 45.Re5=+) 44...Rad3-+ 45.Rg1 (45.Kg1 Rd8 46.Re4 Rd1-+) 45…Rd1 (45...Rd1 46.Rfg4 Rg1 47.Rg1 h5 (47...Kh4?! 48.Kg2-/+) 48.Rg3 Kh4-+) 0-1. psgallar – Aceves, Rated Classical game, lichess.org, 2013.

4.Nf3 b6 5.e3 Bb7 6.Be2 c6 7.a4 e6 8.0-0 Nf6 9.Re1 g6 (9...Bd6 10.Bc3=) 10.d3 Bg7 11.Nbd2 0-0 12.Ba3 (12.Be5 a6+=) 12...Re8 13.Rb1 Qc7 14.Nb3 Nb3 15.Rb3 a6 16.bc6 Qc6 17.Rb4 a5 18.Rh4 Rac8 19.Nd4? (19.c4 e5=) 19...Qc3?? (19...Qa4 20.Qa1 b5 21.c3–+) 20.Qa1?? (better is 20.Nb5 Qc2 21.Nd6 Qd1 22.Bd1= (worse is 22.Rd1 Rc2-/+)) 20...Qa1–+ 21.Ra1 e5 22.Nb5 (22.Nf3 Rc2 23.Bd1 Rc6-/+) 22...Rc2–+ 23.Bd1 Rd2 24.d4 (better is 24.Nd6 Rb8 25.Rc1–+) 24...ed4?? (better is 24...g5 25.de5 Ne4–+) 25.Rd4-/+ Rd4 26.Nd4 Rc8 27.Rc1 Rc1 28.Bc1 Nd7 29.Bf3 (29.Ba3 Ne5-/+) 29...Bh6 (29...Nc5 30.Bd1-/+) 30.Nb5 (30.Be2!?+=) 30...Nc5-/+ 31.Nc3 (better is 31.Nd6 Ba8 32.Nc8 Na4 33.Ne7 Kf8 34.Ba3–+) 31...Ne6?? (better is 31...d4 32.ed4 Bc1 33.dc5 Bf3 34.gf3 bc5–+) 32.Nd5+= Bd5 33.Bd5 Nd4 (33...Nc5!? 34.Bc6 Nd3+=) 34.Bb2+/- Ne6 35.Be6 fe6 36.Bd4 Kf7 (better is 36...Bf8!? 37.Bb6 Bb4+-) 37.Bb6+- Kf6 38.Ba5 1–0. Nikolova,Angelika – Karov,Aleksandar, 10th Sofia Bulgaria, An Pasan Open, 2015.

4.Nf3 b6 5.e3 Nf6 6.a4 (6.Be5 Ne4=) 6...Bg4 7.Be2 e6 8.d3 Bd6 9.0-0 0-0 10.Nbd2 c6 11.h3 Bf5 12.e4 de4 13.de4 Ne4 14.Ne4 Be4 15.Qd4 Qf6 16.Qe4 Qb2 17.bc6 Qf6 18.Ba6 Qe7 19.Nd4 Bc5 20.Nb5 f5 21.Qf3 g5? (better 21...Rac8 22.Bc8 Rc8+=) 22.Rad1 Kg7?? (better 22...g4 23.hg4 Qh4+-) 23.Rd7 Qd7 (23...Kf6 24.Re7 Be7 25.c7+-) 24.cd7 (24.cd7 Rad8 25.Nc7 Rd7 26.Ne6 Kg8 27.Nf8+-) 1–0. Janek – Beafigt, internet, 2019.

4.Nf3 c6 5.e3 (--> 4.e3 c6 5.Nf3).

4.Nf3 Bd7 5.e3 a6 6.d4 (better is 6.ba6 ba6 7.Nc3+=) 6...ab5-/+ 7.Nc3 Nc4 (7...c6 8.Ne5-/+) 8.Bc4 bc4 (8...dc4!? 9.0-0 b4-/+) 9.Nd5= e6 10.Nc3 (10.Nf4 Bb4 11.c3 Bd6=) 10...Bb4 (10...b5 11.a3=) 11.0-0 (11.Ne5 Nf6=) 11...Nf6 12.Qe2 (12.Ne5 b5=) 12...b5 13.e4 (13.a4 Bc3 14.Bc3 Ne4+=) 13...Bc6 (13...Be7!?=) 14.d5+= White gets the initiative 14...Bd7 15.Rfd1 (15.de6 fe6 16.Rfd1+=) 15...0-0 16.de6+/- fe6 17.Nb5!+- Qb8 18.Nbd4 c3 19.Bc1+/- c5 20.Nb3 Bb5 21.Qe3 c4 22.Nbd4+- Rd8 23.Qe2 Ba3?? 24.Ba3+- Ra3 25.e5 Ne8 26.Ng5 Rd7 27.Qe4 g6 28.Nge6 Ng7 29.Ng7 Rg7 30.Qd5 Kh8 31.Qb5 (31...Rg8 32.e6+-) 1–0. coloplayah (1925) – mgoodrich (1930), net–chess.com, 2005.

4.Nf3 Bd7 5.e3 c6 6.bc6 Nc6 7.d4 (7.c4 e6=) 7...e6 8.Nbd2 Bb4 (8...Nf6 9.c4=) 9.a3 Ba5 10.Bd3 Qb6 11.Rb1 Bd2 (11...Qc7 12.0-0+=) 12.Qd2 Nf6 13.a4 (13.0-0 Qd8+=) 13...Qc7 (13...Nb4 14.0-0 Nd3 15.cd3 Ba4 16.Ba3=) 14.Ba3 Qa5 (14...Ne4!? 15.Be4 de4=) 15.Rb7+/- Qa4 16.Bd6 (16.Qc3 Qa5 17.Qa5 Na5+/-) 16...Qa1 (16...Ne4 17.Be4 de4 18.Ne5 Ne5 19.de5 Qa1 20.Qd1 Qc3 21.Kf1+=) 17.Qd1+= Qc3 (17...Qd1 18.Kd1 a5 19.Ke2+=) 18.Nd2+/- Bc8 (18...Na5 19.Rc7 Qb2 20.Nb3+/-) 19.Rc7 a5 (19...Bd7!?+/-) 20.Bb5+- Bd7 21.0-0 a4? (better is 21...Qb2 22.c4 Nb4+-) 22.Bc6 Bc6 23.Re7 Kd8 24.Rf7 a3 25.Nb3 Ba4?? 26.Nc5 Bc2 27.Ne6 Kc8 28.Qa1 Qb2 29.Qb2 ab2 30.Rc7 Kb8 31.Rc2 Kb7 32.Rb2 Kc6 33.Bc5 Ne4 34.Rb6 Kd7 35.Ng7 Nd2 36.Rd6 Kc8 37.Rc1 Nb3 38.Rd1 Rg8 39.Ne6 Nd2 40.h3 Nf3 41.Kf1 Nh2 42.Kg1 Nf3 43.Kh1 Nh4 44.g3 Nf3 45.Rc6 Kd7 46.Rd6 Kc8 47.Rc1 Kb7 48.Rd7 Kc6 49.Rd6 Kb7 50.Rd7 Kc6 51.Rh7 Ra2 52.Rb1 Ra6 53.Rc7# 1–0. Ocampos,Ian Guido – Barrionuevo,Miguel, Buenos Aires Najdorf, 2004.

4.Nf3 Bd7 5.e3 e6 6.Bd3 Nc4 (6...Nf6 7.0-0=) 7.Bc4+= dc4 8.Nc3 Bb4 (8...c6 9.a4=) 9.Qe2+/- Bc3 (9...Nf6 10.Qc4 Bd6 11.e4+/-) 10.Bc3 Bb5?? (better is 10...Nf6 11.Qc4 a6+/-) 11.Bg7+- 1–0. pierre – tweif, internet, 2009.

4.Nf3 e6 5.e3 b6 6.Be2 Nf6 7.0-0 Bd6 8.d4 0-0 9.c3 Nc4 (9...a6 10.Na3+=) 10.Bc4 dc4 11.Qc2 Bb7 12.Nbd2 Qe7 (12...a6 13.e4 Bf4 14.a4=) 13.Nc4 Rae8 (13...Bf3!? 14.gf3 a6=) 14.Nd6 Qd6 15.c4 e5?? (better is 15...Bf3 16.gf3 Ra8+/-) 16.de5+- Re5 (16...Qc5 17.Bd4 Qa3 18.ef6+-) 17.Be5 (17.Be5 Qe6 18.Qc3+-) 1–0. Wall,Bill – Havelange,Ken, Thailand, 1974.

4.Nf3 Nf6 5.d3 Bg4 6.Nbd2 Bf3 7.Nf3 a6 8.ba6 Ra6 9.e3 Rb6 (9...e6 10.Be2=) 10.Bd4 Rb4? (better 10...Ra6!?=) 11.a3 Rb2?? (better 11...Rb5 12.a4 Rb4+/-) 12.Bb2+- e6 13.Bc3 b6 14.Be2 c5 (14...Bd6 15.Qb1+-) 15.0-0 Bd6 16.Ba5 (16.e4 Be7+-) 16...ba5 17.c4 Ng4 (17...0-0 18.Qa4+-) 18.cd5 ed5 19.d4 (19.Qa4 Qd7 20.Qa5 0-0+-) 19...c4 20.Ne5 (better 20.Qa4!? Ke7+-) 20...Ne5 21.de5 Be5 22.Rb1 0-0 (22...Qd7 23.f4 Bf6 24.Bf3+-) 23.Bf3 (23.Rb5 Qc7 24.g3 Bd6 25.Qd5 c3 26.Ra5 Qe7+-) 23...Qh4 (23...Qd6 24.g3 (worse 24.Bd5 Bh2 25.Kh1 Qh6+-) 24...d4 25.ed4 Bd4 26.Qa4+-) 24.g3 Qg5 (24...Qd8 25.Bd5 c3 26.Rb7+-) 25.Qd5 h5 (25...Qf6 26.Be4+-) 26.Qc4 Bd6 27.Ra1 (27.Rb5 Qf6 28.Bh5 Ba3 29.Ra5 Be7+-) 27...Kh8 (27...Qf5 28.Be4 Qe5 29.Rab1+-) 28.Qc6 Be5 29.Qc5 h4 (29...Re8 30.Rac1 Qf6 31.Bh5+-) 30.Qa5 (better 30.Qf8 Kh7 31.Be4 f5+-) 30...hg3 31.fg3 (better 31.hg3 Qf6 32.Rab1 Kg8+-) 31...Qe3 32.Kh1 (32.Kg2 Ba1 33.Ra1 Kg8+-) 32...Ba1 33.Qh5 (33.Ra1?! Qf3 34.Kg1 Qe3 35.Kg2 Qe4 36.Kh3 Qh7 37.Kg2 Qe4 38.Kh3 Qh7 39.Kg2 Qe4=) 33...Kg8 34.Ra1 g6 35.Qg4 Qe5 (35...Qc3 36.Ra2 Qb3+-) 36.Qb4 (better 36.Rd1+-) 36...Qa1-/+ 37.Kg2 Qa2 38.Kh3 Qe6 39.Bg4 f5 (39...Qe3 40.a4-/+) 40.Bf3 f4 41.Kg2 fg3 42.hg3?? (better 42.Kg3 Qe5 43.Kg2-/+) 42...Qa2-+ 43.Kh3 Rf3 44.Qb8 (44.Qd6 Kh7 45.Qe7 Qf7 46.Qf7 Rf7-+) 44…Rf8 (44...Rf8 45.Qd6 Qf7-+) 0-1. psgallar – novap, Rated Classical game, lichess.org, 2013.

4.Nf3 Nf6 5.e3 (--> 1.b4 Nf6 2.Bb2 Nc6 3.b5 Na5 4.e3 d5 5.Nf3).

4.Nf3 Bg4 5.e3 Nc4 6.Bc4 dc4 7.d3 e6 8.Nbd2 (better 8.0-0=) 8...Bb4?? (8...cd3 9.cd3 Qd3 10.Qa4 Bf3 11.Nf3=+) 9.dc4 (better 9.Bg7 cd3 10.Bh8 Bf3 11.gf3+- (worse 11.Qf3 dc2 12.Bd4 c5 13.bc6 Rc8+-)) 9...Qe7?? (better 9...Nf6=) 10.Bg7+- 0-0-0?! (10...Nf6 11.Bh8 0-0-0 12.0-0 Rd2 13.Bf6 Qf6 14.Qb1 (worse 14.Nd2 Bd1 15.Rad1 Qc3+/-) 14...Bf3 15.Qb4+- (worse 15.gf3 Bc3-/+)) 11.Bh8 (better 11.c3 f6 12.Bh8 (12.cb4?! Qg7 13.h3 Bf3 14.Qf3 f5+/-) 12...Bc3 13.Qc1+-) 11...Bd2 12.Ke2 (better 12.Qd2!? Rd2 13.Nd2+- (13.Kd2?! f6+=)) 12...Be3 13.fe3 Rd1 14.Rhd1 (14.Kd1 f6 15.Kc1 Qf8-/+) 14...f6 15.a4 (better 15.h3 Bf5 16.Rd2+/-) 15...Nh6 16.h3 Bf3 17.Kf3 Qf8 18.Bf6 (better 18.a5!?-/+) 18...Qf6-+ 19.Kg3?! (19.Ke2-+) 19...Nf5 20.Kh2 (20.Kf2 Qh4 21.Kg1 Ne3-+) 20...Ne3 21.Rd3 (21.Rg1 Qf4 22.g3 Qc4-+) 21...Qf4 (better 21...Qe5 22.g3 Qa1 23.Re3 Qa4-+) 22.Kh1 Nc2 23.Rad1 b6 24.Rd8 Kb7 (24...Kb7 25.Rg8 a5-+ (25...Qc4?! 26.Rdd8 Qf1 27.Kh2 Qf4 28.Kh1 Qc1 29.Kh2 Qf4 30.Kh1 Qc1 31.Kh2 Qf4=)) 0-1. psgallar - indeveler (1615), Rated Classical game, lichess.org, 2013.

4.Nf3 Bg4 5.e3 Nf6 (--> 1.b4 Nf6 2.Bb2 Nc6 3.b5 Na5 4.e3 d5 5.Nf3 Bg4).

4.Nf3 Bg4 5.h3 Bf3 6.ef3 d4 (6...e6 7.Bc3 c6 8.d4=) 7.c3 d3 8.Qa4 b6 9.g4 (better 9.Qe4+-) 9...Qd5=+ 10.Bg2 Nf6 11.0-0 e6?? (better 11...Qc4 12.Qc4 Nc4=+) 12.f4+- Qc4 13.Qc4 Nc4 14.Ba8 Nb2 15.Bc6 Nd7 16.Na3?? (better 16.Re1+-) 16...Ba3–+ 17.Rfe1 Nc4 (17...Kd8!? 18.f5 ef5 19.gf5–+) 18.f5 Nd2?? (better 18...Ke7 19.Bd7 Kd7-/+) 19.fe6 fe6 20.Re6 Kf7 21.Bd7 (better 21.Re3!? Nf6 22.Rd3+=) 21...Rd8=+ 22.Rae1?? (better 22.Re3 Rd7 23.Rd1=+) 22…Nf3–+ (22...Nf3 23.Kf1 Rd7–+; 22...Rd7?! 23.R6e3 Bc5 24.Rg3–+) 0–1. bazilishek – deepakroman, lichess.org, 2020.

4.g3 Nc4 5.Bc3 e6 6.e3 Qd7 7.a4 a6 8.Bc4 dc4 9.ba6 (9.Qg4 Qd5 10.e4 Nh6=) 9...Ra6=+ 10.a5 b6 (10...e5 11.e4=+) 11.Nf3 (11.e4 ba5 12.Ra5 Ra5 13.Ba5 Nf6=+) 11...b5 (11...ba5 12.e4=+ (12.Ra5? Ra5 13.Ba5 Qd5–+)) 12.0-0 (12.e4 f6=+) 12...b4 13.Bd4 (13.Bb2 Bb7-/+) 13...c5 (13...Bb7 14.Re1-/+) 14.Bb2=+ Qb5 Exerts pressure on the isolated pawn (14...Qc7!?=+) 15.Ne5= f6?? (better 15...Bb7=) 16.Nf3?? (better 16.Qh5 g6 17.Ng6 hg6 18.Qh8+-) 16...Ra5–+ 17.Ra5 Qa5 18.d3 (better 18.Nh4!? Nh6 19.e4–+) 18...c3 19.Bc3 bc3 20.d4 (20.Qe1 Bb7 21.e4 c4 22.Qc3 Qc3 23.Nc3 cd3 24.cd3 Ba6–+) 20...Bb7 21.Qd3 0–1. JUANKARODA (1750) – alblsl (1740), lichess.org, 2020.

4.g3 Bd7 5.e3 c6 6.bc6 Bc6 7.d4 (7.Nf3 Nc4 8.Bc3 Nf6=) 7...e6 8.Nc3 Bb4 9.a3 Be7 10.Nf3 Nf6 11.Ne5 0-0 12.Bd3 Bd6 13.Nc6 Nc6 14.0-0 e5 15.de5 Ne5 16.Bf5 Bc7 (16...Nc4!? 17.Rb1 Nb2 18.Rb2 Be5=+) 17.Nb5+= a6 18.Nc7 Qc7 19.Bd4 g6 20.Be5 Qe5 21.Bd3 Qg5 22.c4 dc4 23.Bc4 Rad8 24.Qf3 b5 25.Bb3 Ng4 26.h3 Ne5=+ 27.Qb7 Qf5 28.g4 Ng4?? 29.hg4+- Qg4 30.Qg2 Qf5 31.e4 Qf4 32.Rad1 Rc8 33.Bd5 Rc3 34.Ra1 Qh6?? 35.Bb7 Rh3 36.Ba6 Rh5+/- 37.Bb7?? Rg5–+ 38.Qg5 Qg5 39.Kh1 Re8 40.f4 Qh4 41.Kg2 f5 42.e5 Rd8 43.Rf2 Rd3 44.e6? Rg3 45.Kf1 Re3 46.Bd5 Qf6 47.e7 Kh8 48.Rc1 Qd4 49.Rc8 –+. audrey – shado23, Live Game Caissa's Web, 2004.

4.g3 Bf5 5.Bg2 Nf6 6.Nf3 Nc4 (6...a6 7.Bf6 ef6 8.ba6 Ra6 9.0-0=+) 7.Bf6= ef6 8.d3 Bb4?? (better 8...Nb6=) 9.c3+- Nb2 (9...Ba3 10.Nd4 Bb2 11.Nf5+-) 10.Qb3 Bc3?? (10...Nd3 11.ed3 Bc5 12.d4+-) 11.Qc3 (better 11.Nc3 Nd3 12.ed3+-) 11...Na4 12.Qa3 (12.Qc2 Nb6+-) 12...Nb6 13.0-0 Qe7 (13...a6 14.Nd4 Be6 15.ba6 Ra6 16.Qc3+-) 14.Qe7 (14.Qc3 0-0 15.Nd4 Be6+-) 14...Ke7 15.Nd4 Be6 16.Ne6 (16.Rc1!? Rhc8+-) 16...fe6 17.Nc3 a6 18.ba6 Ra6 19.Rfc1 Kd7 20.Nb5 (20.e4 c6+-) 20...c6 21.Nd4 Rha8 22.Rab1 e5 (22...Kd6 23.e4 g6 24.Nc2+-) 23.Nc2 (23.Bh3 f5 24.Nb3 Ra2 25.Nc5 Kc7 26.Bf5 g6+-) 23...Ra2? (better 23...Kc7 24.Nb4 Ra5+-) 24.Rb6 Kc7 25.Rb3 b5 (25...R8a7+-) 26.Nb4 Re2 (26...Ra1 27.Rbc3 d4 28.Rc6 Kd8 29.e3+-) 27.Rc6 Kd7 28.Bd5 Raa2 (28...Rd2+-) 29.Ra6 (29.Ra6 Ra6 30.Na6 Re1 31.Kg2+-) 1–0. JUANKARODA (1845) – Lomok (1820), lichess.org, 2020.

4.h4 Bg4 5.d3 e6?? (better 5...c6=+) 6.Qd2+- c6 7.Qf4 (7.f3 Bh5 8.g4 Bg4 9.fg4 cb5+-) 7...Bf5?? (better 7...Nh6=) 8.g4 Bd6 (8...Bd3 9.cd3 cb5 10.Bg2+-) 9.Qf3 (better 9.Qg5 Bb4 10.Kd1+-) 9...Bg6?? (9...Nc4 10.dc4 Be4 11.Qh3+-) 10.h5 (better 10.Bg7!? Be5 11.Be5 f6+-) 10...Qg5 (10...Bh5 11.gh5 Bb4 12.Nd2+-) 11.hg6 (11.Nh3!? Qh6 12.g5 Qh5 13.Qh5 Bh5 14.Bg7 cb5 15.Bh8 Rc8+-) 11...fg6 12.Nh3 Qe7 13.a4 0-0-0 14.bc6 Nc6 15.c3 e5? (15...Rf8 16.Qg2+-) 16.g5 (better 16.Qd5!? Bc5 17.Qc4 Na5+-) 16...e4 17.Qg4 Kb8 18.e3 (18.Kd1 Re8+-) 18...Ne5 19.Qd1 (19.Qg2 Nd3 20.Bd3 ed3+-) 19...Nf3+- 20.Ke2 Qc7 (20...Ng5 21.Ng5 Qg5 22.Ke1+-) 21.Bg2 (21.Nd2!? Nd2 22.Kd2 Ne7+-) 21...Nh4+- 22.Bf1 (22.Kf1+-) 22...Ne7?? (22...Nf3 23.Nd2 Qf7+-) 23.d4 (23.Nd2 ed3 24.Ke1 h6+-) 23...Nef5 (better 23...Qd7!?+-) 24.Qb3 Nf3 25.Ba3 (25.Qd5!? Rhe8 26.Qb3 Ka8+-) 25...N5h4 26.Bd6 Rd6 27.Nf4 Rhd8 28.Bh3 Ra6? (better 28...Ng5 29.Bg4 Nhf3+-) 29.Ne6+- (29.Nd5?! Qf7 30.c4 Ng5+-) 29...Qd6 30.Nd8 Qd8 31.Nd2 Ng5 (31...Nd2 32.Kd2 Rb6 33.Qa2+-) 32.Bg4 Nf7 (32...Rb6 33.Qa2 (33.Rh4?! Rb3 34.Nb3 h5=) 33...Nf5 34.c4+-) 33.a5! h5 (33...Ra5 34.Ra5 Combination) 34.Bh3 Rc6 (34...Nf5 35.Ne4! de4 36.Qf7+-) 35.Rab1 Rc7 36.a6 (36.Be6 Nf3 37.Bd5 Nd2 38.Kd2 Nd6+-) 36...b6 (36...Nf3 37.Nf3 ef3 38.Ke1+-) 37.Be6 Nf3 38.Bd5 Nd6 (38...Nd2 39.Kd2 Ng5+-) 39.Be4 (better 39.Ne4 Ng5 40.Ng5 Qg5 41.c4+-) 39...Nd2+- 40.Kd2 Ne4 41.Ke2?? (better 41.Ke1 Qc8 42.Rh4 Rc3 43.Qd1+=) 41...Nc3-/+ 42.Kf3 Qf6 43.Kg2 Qg5 (43...Qg5 44.Kh2 Nb1 45.Rb1 Qd8-/+) 0–1. beatmeeasy (1950) – bmakif (1990), lichess.org, 2021.

5.a4 Nf6 6.g3 e6 7.Qd2 Bd6 8.Qg5 0-0 9.Bf6 Qf6 10.Qf6 gf6 11.Nd2 a6 12.e4 ab5 13.ab5 de4 14.Ne4 Be7 15.Nc3 Ra7 16.Bg2 e5 17.Nge2 Bd8 18.0-0 b6 19.f4 Bg4 20.h3 Bd7 21.g4 Re8 22.Be4 Be6 23.Nd5 Bd7 24.c4 Bc8 25.Nec3 Be6 26.f5 Bc8 27.Bf3 Bb7 28.Ne4 Bd5 29.cd5 Rf8 30.d6 h6 31.Rfe1 Rd7 32.Ra3 Ra7 33.Rea1 Rd7 34.R1a2 Kh7 35.h4 Kg7 36.Rf2 Rg8 37.Kg2 Re8 38.Re2 Ra7 39.Kg1 Rg8 40.h5 Re8 41.Nd2 Rd7 42.Ra5! ba5 43.Bc6 Rd6 44.Be8 Rd3 45.Kf1 Rd4 46.Ne4 Bb6 47.Bc6 Rc4 48.Rd2 Rd4 49.Rd4 cd4 50.Nd6 Kf8? 51.Nc4 Bd8 52.b6 Kg7 53.b7 Bc7 54.Na5!! Kf8 55.Be4 Ke7 56.Nc6 Kd7 57.b8B Bb8 58.Nb8 Kd8 59.g5! fg5 60.Nc6 Kc7 61.Ne5 f6 62.Nf7 Kd7 63.Nh6 Ke7 64.Ng4 Kf7 65.h6 Kf8 66.Nf6 Kf7 67.Ng4 d3 68.h7 d2 69.Ke2 Ke7 70.f6 Ke6 71.f7! Kf7 72.h8Q d1B 73.Ke3 Bg4+- 74.Bd5 Kg6 75.Qg8 Kf6 76.Kd4 Ke7 77.Qg5 Kd7 78.Qg4 Kd6 79.Qe6 Kc7 80.Qe7 Kb6 81.Qb7 Ka5 82.Kc5 Ka4 83.Qb4# 1–0. GLChess207e – Holmes01, computer chess game, 2000.

5.Nd2 Bd7 6.c4 b6 7.e3 e6 8.g3 Nf6 9.Bg2 Rc8 (9...Be7 10.Rb1+=) 10.Ngf3 g6 11.Ne5 Bg7 12.Qf3 0-0 13.Nd7 Nd7 14.Bg7 Kg7 15.cd5 Ne5 (15...Nf6 16.de6 Qd3 17.e7+=) 16.Qe4 (16.Qe2!?+/-) 16...Qd5+= 17.Qd5 ed5 18.Ke2 Rfd8 19.f4 Ng4 20.h3 Nf6 21.g4 c4 22.d4 (22.Rhc1 h6=) 22...c3= 23.Nb3 (23.Nb1 c2 24.Nd2 Rc3+=) 23...Nb3 24.ab3 Rc7 25.Kd3 Rdc8 26.g5 Ne4 27.Be4 de4 28.Kc2 f5 (28...h6 29.Ra4+=) 29.Ra4+= Kf7 30.Rha1 Ra8 31.Rc4 Rc4? (better is 31...Re7+/-) 32.bc4+- Ke6 33.Kc3 Kd6 34.Kb4 Kc7 35.c5 bc5 (35...Kb7 36.c6 Kc8 37.d5+-) 36.Kc5 (better is 36.dc5 Kb8 37.c6+-) 36...Kd7 37.Ra6 Rc8 38.Rc6 Ra8 39.d5 1–0. Marinc,D (2015) – Ivanov,Iliyan, 7th Georgiev – Kesarovski Mem, Sunny Beach, 2008.

5.e3 a6 6.ba6 Ra6 7.Nf3 =.

5.e3 d4 6.Nf3 (6.ed4 cd4 7.Nf3 Bg4+=) 6...Bg4 (6...de3 7.fe3 Bd7 8.Nc3+=) 7.Nbd2 (7.ed4 cd4 8.Nbd2 e5+=) 7...e6 (7...de3 8.fe3 Nf6 9.Be2=) 8.Be2 (8.ed4 cd4 9.Bd4 Qd4 10.Nd4 Bd1 11.Rd1 Bb4+/-) 8...Bf3 (8...de3 9.fe3 Nh6 10.e4+=) 9.Bf3 (9.Nf3 de3 10.fe3 Qb6+=) 9...Rb8 (9...Nf6 10.c4+=) 10.0-0 Bd6 (10...Nf6 11.Ne4+=) 11.Re1 (11.Ne4 Nf6+/-) 11...Qc7 (11...Nf6 12.ed4 cd4 13.c3+=) 12.Nf1 (12.ed4 Bh2 13.Kh1 Bf4 14.dc5 Nf6+-) 12...Nf6 (better is 12...Qb6!?+=) 13.ed4+/- 0-0 14.dc5 Qc5 (14...Bc5 15.Qe2+/-) 15.c4+- Qc7 (15...Rfd8 16.Bc3 Qa3 17.Qc1 Qc1 18.Rac1+-) 16.h3 (16.Bc3 Rfd8+-) 16...Rbd8 (16...a6 17.Bf6 gf6 18.Rb1+/-) 17.a3 (17.Bc3 Bc5 18.Qa4 b6 19.Bf6 gf6+/-) 17...Be7 (17...Bc5 18.Bf6 gf6 19.Ne3+/-) 18.Ne3 Rfe8 (18...Ne8 19.Rc1+/-) 19.Rc1 (19.Qa4 b6 (19...Rd3? 20.b6 ab6 21.Bf6+-) 20.d4 Qf4+-) 19...Qb8 (19...Bc5 20.Bf6 gf6 21.Ng4+/-) 20.Qc2 (20.c5 b6 21.c6 Qc7+-) 20...Rd7 (20...Qc7 21.Qa4 Bc5 22.Bf6 gf6 23.b6 Qb6 24.Rb1 Be3 25.Rb6 (worse is 25.fe3 Qc7+/-) 25...Bb6 26.d4+-) 21.Red1 (21.Qa4 b6 22.d4 Qf4+-) 21...Red8 (21...Qd8 22.Qa4 Bd6 23.c5+-) 22.Be2 (22.c5 b6 23.c6 Rc7+-) 22...b6 (22...Rc8 23.d4+/-) 23.d4 Nb7 (23...Qf4 24.Bd3+-) 24.Bf3+- Rc8 (24...Qf4 25.Qe2+-) 25.Bc6 (25.Qe2 Qc7+-) 25...Rdd8 26.Bc3 (26.d5 Nc5+-) 26...Ba3 27.Ra1 Bc5? (better is 27...Bd6+-) 28.dc5 Nc5 29.Bf6 (29.Rd8 Rd8 30.Bf6 gf6+-) 29...gf6 30.Rd8 (30.Rd8 Rd8 31.Qa2+-) 1–0. Fritz,Harry – Breite,Wilhelm, corr, 1966.

5.Nf3 a6 =.

5.a4 ab5 6.ab5 b6 7.Nf3 Rb8 8.Be2 (8.Bd3 Nf6+-) 8...e6 (8...Ra8 9.0-0+-) 9.0-0 (better 9.Ne5 Ra8 10.Bh5+-) 9...Bc5?? (better 9...Nf6+-) 10.Bg7+- f6 (10...Nf6 11.Bh8 Bd6 12.d4+-) 11.Bh8 Kf7 (11...Nh6 12.d4 Bd6 13.Qd3+-) 12.Bd3 (better 12.d4 Nh6 13.dc5 Qh8+-) 12...f5 (12...Ne7 13.Ng5! fg5 14.Qh5 Kf8 15.Bh7 Qd7+-) 13.Ne5 Kf8 14.Ra5! ba5 15.Qh5 (15.Nc6!? Qe8 16.Nb8 Bd6+-) 15...Qe7 16.Nc6 Qf7 17.Qf7 (17.Nb8?! Qh5 18.Be5 Qf7+=) 17...Kf7 18.Nb8 Ne7 19.Be5 Bd6 (19...Bb6 20.Nc3 Bb7 21.Na4+-) 20.Bd6 cd6 21.Nc3 Bb7 22.Ra1 Nc8 23.Ra5 Nb6 24.Ra7 Nc4 25.Rb7 Kf6 26.Bc4 dc4 27.b6 Ke5 28.Nd7 1–0. DEFFM – GuestGZRY, freechess.org, 2018.

5.a4 ab5 6.Bb5 c6 7.Be2 Bf5 8.Nf3 e6 9.0-0 Bd6?? (better 9...Nf6=) 10.Bg7+- Qc7 (10...f6 11.Bh8 Kf7 12.g4+-) 11.d3 (11.Bh8!? f6+-) 11...e5 12.Nbd2 (better 12.Bh8 e4 13.de4 de4+-) 12...e4 13.de4 de4 14.Ng5 (better 14.Nd4 Bh2 15.Kh1+-) 14...Bh2+/- 15.Kh1 Be5 16.Bh8 Bh8 17.Bh5 (17.Nge4 Rd8 18.Qe1 Ba1 19.Qa1 b6+/-) 17...Bg6 (17...Ba1 18.Qa1 Kf8 19.Qh8+- (19.Nde4?! Qe7 20.f3 h6=)) 18.Bg6 hg6 19.Rb1 (better 19.Nde4 Rd8 20.Qe1+-) 19...Qe5? (better 19...f5+/-) 20.Nde4+- f6 (20...Nh6 21.Qd6+-) 21.f4 (21.Nd6 Ke7 22.Nb7 Qg5 23.Na5 Qd5 24.Rb7 Kf8+-) 21...Qe7 (21...Qd5 22.Qd5 cd5 23.Ne6+-) 22.Nd6 Kf8 23.Nge4 (better 23.Ngf7!? f5+-) 23...f5 24.Ng5 Rd8 (24...Bf6+-) 25.Qd2?? (better 25.Qe1 Rd6 26.Qa5+-) 25...Nc4+/- 26.Qb4 (better 26.Nc4 Rd2 27.Nd2+/-) 26...Nd6=+ 27.Rfd1 (27.Qb3 Re8 28.Rfd1 Nh6=+) 27...Nf6 28.Qb3 Nfe4 (better 28...Ke8!?-/+) 29.Ne6= Ke8 30.Nd8 Kd8 (30...Qh4 31.Kg1 Qf2 32.Kh2 Qg3 33.Kg1 Qf2 34.Kh2 Qg3 35.Kg1 Qf2=) 31.Qg8 Qe8 32.Qe8 Ke8 33.Kg1 (33.Kh2 Ke7=) 33...Ke7=+ 34.c4 (34.Rb4 Nc5=+) 34…Nc3 (34...Nc3 35.c5 Nde4 36.Rb7 Ke6+=; worse 34...Nc4 35.Rb7 Ke6 36.Rc7+=) 0-1. iamdudum (1615) - ARM777 (1630), Rated Classical game, lichess.org, 2013.

5.a4 Nc4 6.Bc4 dc4 7.Qe2 Be6 (7...ab5 8.ab5 Ra1 9.Ba1+= Qd5+=) 8.Qf3 (8.Nf3 Nf6 9.0-0 ab5+=) 8...Bd5 (8...ab5 9.ab5 Ra1=) 9.e4 Be6 10.Ne2 Qd6 11.Ba3 Qb6 12.Nbc3 ab5 13.ab5 c6 14.0-0 cb5 (better is 14...Rd8!?+/-) 15.Bc5!+- Qd8 (15...Qc5 16.Ra8) 16.Bb6!! Qc8 (16...Qb6 17.Ra8) 17.Qe3 (17.Nb5 Ra6 18.Nc7 Kd7 19.Na6 ba6+-) 17...Ra6? (better is 17...Ra1 18.Ra1 f5+/-) 18.Bd4?? (18.Nb5!? f6 19.Nc7 Kf7 20.Na6 ba6+-) 18...Qa8? (better is 18...b4 19.Na4 Nh6+=) 19.Nb5+- Ra1 (19...Qc8 20.Bb6 f6 21.Nc7 Kf7 22.Na6 ba6+-) 20.Nc7 (20.Ba1?! Qc8+/-) 20...Kd8 (20...Kd7 21.Ra1 Qd8 22.Bb6 Qc7 23.Bc7+-) 21.Na8 (better is 21.Ra1 Qa1 22.Ba1 Kc7 23.Qg3 Kd7 24.Qb8+-) 21...Ra8 22.Bb6 Ke8 23.Qc5 (23.Nc3 Rc8+-) 23...Rc8 24.Qb5 Bd7 25.Qb4 (25.Qd5!? Nf6 26.Qb7 e6+-) 25...e5 26.Qa5 Bd6 27.Ng3 (27.Nc3 Bb8+-) 27...Nf6 28.Nf5 Bc7?? (better is 28...Bf5 29.ef5 Ke7+-) 29.Bc7 Ne4 (29...Bf5 30.ef5 e4+-) 30.Qe5 Be6 1–0. guest945 – guest722, ICC, 1999.

5.a4 Nc4 6.Bc4 dc4 7.Nf3 Qd6 8.Na3 f6 9.0-0 Qb4+=.

5.a4 Nc4 6.Bc4 dc4 7.Nf3 e6 8.0-0 Be7?? (8...Bd7 9.Ne5 ab5 10.ab5 Ra1 11.Ba1 Nf6+/-) 9.Bg7+- Bf6 10.Bh8 Ba1 (10...Bh8 11.Nc3+-) 11.Ba1 Ne7 (11...ab5 12.Ne5 Qh4+-) 12.Bf6 Bd7 (12...Qd6+-) 13.Ne5 ab5 14.Qh5 (14.Qh5 Ng6 15.Bd8 Rd8 16.ab5 Ne5 17.Qe5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Nc4 6.Bc4 dc4 7.Nf3 Bg4= 8.h3 Bh5 9.Na3 Qd5=.

5.a4 c6 6.Na3 Nh6 (6...Nf6 7.Nf3 Bg4 8.ba6 ba6 9.h3 Bf3=; 6...e6 7.Nf3 Nf6 8.Be2 Bd6 9.0-0 0-0=; 6...Bf5 7.Nf3 e6 8.Be2 Nf6 9.Nh4 Be4=; 6...ab5 7.ab5 f6 8.d4 Bf5 9.Nf3 e6=; 6...Qd6 7.Bc3 Qd8 8.Be2 Nf6 9.Nf3 Bg4=; 6...cb5 7.ab5 f6 8.ba6 ba6 9.Bd3 Nh6=; 6...f6 7.f4 Bf5 8.Nf3 e6 9.Be2 Bb4=; 6...b6 7.Nf3 f6 8.d4 e6 9.Bd3 Bb4=; 6...c5 7.Be2 f6 8.f4 Bf5 9.Nf3 e6+=) 7.Nf3 f6 8.d4 Bf5 9.ba6 ba6 =.

5.a4 c6 6.c4 Nc4-/+ 7.Bc4 dc4 8.bc6 bc6 9.Nf3 Nf6 (9...Rb8 10.Qc1-/+) 10.Nc3 (10.Na3 Rb8 11.Nc4 Be6 12.Bf6 ef6+=) 10...e6 (10...Bg4 11.Qe2 Rb8 12.Ba3+=) 11.Qe2 Rb8 12.Rb1 Bb4 13.0-0 (13.Qc4 c5=) 13...Bc3 (better is 13...Qd3!?+=) 14.Bc3+= Bd7? (better is 14...Rb1!? 15.Rb1 Qd3 16.Qd3 cd3+=) 15.Qc4 0-0 (15...Ra8 16.a5+/-) 16.Qa6 (16.Rb8 Qb8 17.Bf6 gf6 18.Qa6 c5+-) 16...c5 17.Qc4 Qc8 (17...Ra8 18.Ra1+/-) 18.Ne5 Ra8 19.Nd7 (19.a5 Nd5+-) 19...Qd7 20.a5 Ne8 (better is 20...Rfc8+-) 21.Qc5 Nd6 (21...Qd3 22.Qe5 Rd8 23.Rb3+-) 22.Qd4 Qc6 (22...f6 23.Rb6 Rfd8+-) 23.Qg7 1–0. Fournier,Frederic (1875) – manuelbels (1795), Active, 2004.

5.a4 c6 6.Bd4 e6 (6...Nh6 7.Nf3 f6 8.Bc5 e5 9.Bf8 Rf8=) 7.Nf3 f6 8.Bc3 e5 9.d4 e4 =.

5.a4 c6 6.Be2 cb5 7.ab5 Nc4 8.Bc3 Nf6 9.Nf3 Bg4 =.

5.a4 c6 6.Nf3 cb5 7.ab5 ab5 (7...Nf6 8.Ra4+=) 8.Bb5 (8.Ne5 Bd7 9.Nd7 Qd7+/-) 8...Bd7 9.Bd7 Qd7 10.Ne5 Qd6? (10...Qb5 11.Bd4 e6 12.Nc3+/-) 11.Qe2 Qb6 12.Bd4 Qc7?? 13.Qb5 Kd8 14.Nf7 Kc8 15.Qe8 Qd8 16.Qd8# 1–0. mtr – Miki, littlegolem.net, 2009.

5.a4 c6 6.Nf3 Nf6 7.Be2 Bg4 8.ba6 ba6 9.Bf6 ef6 =.

5.a4 Bd7 6.Nf3 Nf6 7.Be2 Ne4 (7...Nc4 8.Bc4 dc4 9.Nc3=) 8.Nc3 (8.Ne5 Bf5+=) 8...ab5 (8...Nc4 9.Bc4 Nc3 10.Bc3 dc4 11.Ne5+=) 9.ab5+= Nc3 10.Bc3 Nc4 11.Bc4 (11.Ra8 Qa8 12.Bc4 dc4+-) 11...Ra1 (11...dc4 12.Ra8 Qa8 13.Ne5+-) 12.Qa1+- (12.Ba1?! dc4 13.Ne5 Be6= (13...Bb5? 14.Nf7 Kf7 15.Qh5 g6 16.Qb5+-)) 12...dc4 13.Bg7 Rg8 14.Bf8 Kf8 15.Qd4 Rg2? (better 15...Qa8+-) 16.Ne5+- (16.Qc4?! Qa8 17.Ke2 Qa5+-) 16...Qa8 (16...Ke8 17.Nd7 Rg5 18.Ke2+-) 17.Nd7 Kg8 18.Ke2 b6 (18...c3 19.Qc3 Qc8 20.Ra1+-) 19.Ra1 Qd8 (19...Qb7 20.Ne5 h5+-) 20.Nf6! Kg7 (20...ef6 21.Qd8 Double attack (21.Qd8 Discovered attack)) 1–0. GuestXGZS – GuestQSM, freechess.org, 2018.

5.a4 e6 6.d4 c6 7.Bc3 Bd7 8.ba6 ba6 9.Na3 (9.Nf3 Nf6=) 9...Nf6=+ 10.Qd2 (10.Bd3 c5=+) 10...Nb7 11.Nf3 (11.f3 c5=+) 11...Ne4-/+ 12.Qd3 Ba3 (12...c5 13.Rb1 Qc7 14.Bd2-/+) 13.Ra3=+ c5 (worse 13...Nc3 14.Qc3 (worse 14.Rc3 Qa5=+) 14...Qa5 15.Qa5 Na5 16.Rc3+=) 14.Bb2 (14.dc5 Nbc5 15.Qd4 A) worse 15...Nc3 16.Qg7 Rf8 A1) worse 17.Rc3 Ne4 (17...Na4?! 18.Ra3=) 18.Bd3 Nc3 19.Qc3 Rc8-/+; A2) 17.Qc3 Na4 18.Qd4+=; B) 15...f6=+) 14...c4-/+ 15.Qd1 Qb6 16.Qc1 (16.Qa1 Rb8-/+) 16...Qb4 (16...Rb8 17.Ra2-/+) 17.Nd2 (17.c3 Qb6=+) 17...c3 (better 17...Nbd6 18.c3 Qb7-/+) 18.Rb3?? (better 18.Bc3 Nc3 19.Rb3 Qa4 20.Rc3=) 18...cd2-+ (18...cb2?! 19.Rb2 (19.Rb4?? bc1Q 20.Ke2 Qd2 21.Kf3 Qf2 22.Kg4 h5 23.Kh3 Ng5) 19...Qd2 20.Qd2 Nd2 21.Kd2-+) 19.Ke2 Qc4 (better 19...dc1Q 20.Bc1 Qc4 21.Kd1 Nf2 22.Kd2-+) 20.Kf3 Ba4 (better 20...dc1Q 21.Bc1 Qc2-+) 21.Bc4 dc1Q 22.Rc1 Bb3 23.Bb3 0-0 24.c4 (24.Ke2 Rfc8-+) 24...Na5 (better 24...Nd2 25.Ke2 Nb3 26.Rc2-+) 25.Ba2 Nc4 26.Bc4 dc4 (better 26...Nd2 27.Kf4 Nc4-+) 27.Rc4?? (27.Ke4 Rfc8 28.Ba3-+) 27...Nd2 28.Ke2 Nc4 29.Kd3 Nb2 30.Kc3 Rab8 31.e4 Rfc8 32.Kd2 Rb3 33.f3 Nd3 (33...Rd3 34.Ke1 Rc2 35.d5 Rd1) 34.Ke3 (34.Ke2 Rc2 35.Ke3 Rg2 36.d5 e5 37.f4 Nf4) 34...Ne1 (34...Rc2 35.h3 g5 36.d5 e5 37.g3 Nf4) 35.Kf4-+ Rc2 36.g3 Rh2 (36...Rf3 37.Kg5 f6 38.Kg4 Rh2 39.d5 h5) 37.d5 (37.Ke5 Rb6 38.Kf4 f6 39.g4 g5 40.Kg3 Rbb2 41.d5 Rbg2) 37...Rf3 (37...Nd3 38.Kg4 h5 39.Kg5 f6 40.Kg6 Ne5) 38.Ke5-+ Rg2 (38...ed5 39.Kd5 Rc2 40.Kd6 Rd3 41.Ke5 Rf2 42.g4 Rd7 43.g5 Nd3) 39.d6 Rd3 (39...Rd2 40.d7 Rd7 41.g4 Nd3) 40.g4 (40.Kf4 Rdg3 41.Ke5 Nf3 42.Kf4 e5 43.Kf5 Rg5) 40...Rg4 41.d7 Nf3 0-1. upep (1725) - 4thzcon (1670), Rated Classical game, lichess.org, 2013.

5.a4 Bf5 A) 6.Nf3 Nf6 (6...e6 7.ba6 ba6 8.Be2 Ne7 9.0-0 c5=; 6...Nc4 7.Bc4 dc4 8.Na3 Qd5 9.ba6 ba6+=) 7.Nc3 e6 8.ba6 ba6 9.Nh4 Bg4=; B) 6.Bc3 c5 (6...c6 7.Nf3 Nf6 8.Be2 Ne4 9.0-0 c5=) 7.Nf3 Nf6 8.d3 e6 9.Qd2 b6=; C) 6.Nc3 e6 (6...e5 7.Nf3 d4 8.ed4 ed4 9.Ne2 d3=; 6...ab5 7.ab5 e6 8.Nf3 Nf6 9.Be2 Bg4=) 7.ba6 ba6 8.Nf3 c5 9.Rb1 Nf6=; D) 6.Be2 e6 (6...Nf6 7.ba6 ba6 8.Nf3 c5 9.0-0 e6=; 6...Nc4 7.Bc4 dc4 8.Qf3 Qc8 9.e4 Bg6=; 6...f6 7.ba6 ba6 8.d4 e6 9.Nf3 Bb4=; 6...Be4 7.f3 Bf5 8.ba6 ba6 9.Nc3 e6=) 7.ba6 ba6 8.Nf3 c5 9.0-0 Nc6=; E) 6.ba6 ba6 7.Nf3 c5 8.Na3 Nf6 9.Be2 Nc6=.

5.a4 Nf6 A) 6.Nf3 Bf5 (6...Bg4 7.h3 Bh5 8.ba6 ba6 9.g4 Bg6=; 6...e6 7.Be2 Bd6 8.0-0 0-0 9.Be5 b6=) 7.Nc3 e6 8.ba6 ba6 9.Nh4 Bg4=; B) 6.Bd4 Bf5 (6...e6 7.Nf3 Bd6 8.Be2 c5 9.Be5 0-0=; 6...Nc4 7.Nf3 Bg4 8.Bc4 dc4 9.Qe2 ab5=; 6...b6 7.Nf3 c5 8.Bc3 e6 9.Ne5 Bd6=) 7.Nc3 e6 8.Rb1 ab5 9.Bb5 Nd7+=; C) 6.Bc3 c5 (6...Nc4 7.Nf3 Ne4 8.Bd4 ab5 9.ab5 Ra1=; 6...c6 7.Nf3 Bg4 8.h3 Bh5 9.ba6 ba6=) 7.Nf3 Bg4 8.h3 Bh5 9.ba6 ba6=.

5.ba6 b6 A) 6.Be2 Nf6 (6...e6 7.Nf3 Ba6 8.Ne5 Nf6 9.Bh5 Nh5=; 6...Ba6 7.Nf3 e6 8.Ba6 Ra6 9.0-0 Nf6=) 7.Nf3 e6 8.0-0 Bd6 9.d3 0-0=; B) 6.Nc3 Ba6 (6...Nf6 7.Nf3 e6 8.a7 c6 9.Bd3 Bd6=; 6...e6 7.e4 Nf6 8.ed5 ed5 9.Nb5 Ba6=) 7.Ba6 Ra6 8.e4 d4 9.Nb5 Nc4=; C) 6.Na3 e6 7.Nf3 c6 8.Ne5 Nf6 9.Qf3 Qc7+=; D) 6.a3 e6 (6...Nf6 7.Nf3 e6 8.Nc3 Ba6 9.Ba6 Ra6=; 6...c6 7.Nf3 Ba6 8.Ba6 Ra6 9.Qe2 Ra7=) 7.Nf3 Nf6 8.Nc3 Ba6 9.Ba6 Ra6=; E) 6.a7 Ra7 (6...Nf6 7.Nf3 Ra7 8.Ne5 c6 9.Bd4 e6=) 7.Nf3 e6 8.Nc3 c6 9.Rb1 Nf6=; F) 6.Nf3 c6 (6...Nf6 7.Ne5 Ba6 8.Ba6 Ra6 9.Qe2 Qc8=; 6...e6 7.Ne5 Ba6 8.Ba6 Ra6 9.Qe2 Qc8=; 6...f6 7.d4 Ba6 8.Ba6 Ra6 9.Nbd2 e6+=; 6...Ba6 7.Ba6 Ra6 8.Qe2 Ra8 9.0-0 e6=; 6...Nh6 7.Nc3 e6 8.e4 de4 9.Ne4 c6+=) 7.Ne5 Nf6 8.Bc3 Nd7 9.Nd7 Qd7=.

5.Bc3 c6 6.Ba5 (6.ba6 b6=) 6...Qa5=+ 7.bc6 bc6 8.c4 (8.Nf3 e6=+) 8...g6 (8...e5 9.Qc2 Ne7 10.Nf3=+) 9.Nc3=+ e6 (9...Bg7 10.Rc1=) 10.a4 (10.Nf3 Bb4=) 10...Bb4 11.Qc2 Nf6 12.Bd3 (12.Nf3 Rb8=) 12...Bd6=+ 13.Rb1 0-0 14.e4 (14.f4 Bd7=) 14...de4 (14...d4 15.Nd1=+) 15.Ne4 Qe5?? (15...Ne4 16.Be4 Bd7 17.Qd3=+) 16.c5?? (better 16.f4 Qf4 17.g3+-) 16...Ne4= 17.Be4 Bc5 18.Rc1 (better 18.Nf3 Qd6 19.0-0=+) 18...Rd8?? (better 18...Qd4 19.Nh3 Rb8-/+) 19.d3?? (better 19.Nf3 Bf2 20.Kf2+-) 19...Bb4 (19...Ba3!? 20.Nf3 Qa5 21.Ke2 Bc1 22.Rc1-+) 20.Kf1 Bd7 21.Nf3 Qd6 22.g4 f5 23.gf5 ef5 (23...gf5?! 24.Rg1 Kf8 25.Bc6 Bc6 26.Qc6 Qd3 27.Kg2=+) 24.Bc6 Bc6 (24...Rac8!? 25.Qc4 Kh8 26.Qd4 Qd4 27.Nd4-+) 25.Qc6 Qd3 (25...Qc6 26.Rc6 Rd3 27.Ng5-+) 26.Kg2-/+ Qe2 27.Rhe1 Be1 28.Re1 Qa2?? (better 28...Rac8 29.Qc8 Qf3 (29...Rc8? 30.Re2 Rc4 31.a5+-) 30.Kf3 Rc8=+) 29.Qc3 (better 29.Re7 Re8 30.Re8 Re8 31.Qe8 Kg7 32.Qe5 Kg8 33.Qb8 Kg7 34.Qb7 Kh6 35.Qa6+-) 29...Qa4?? (better 29...Rd7 30.Qc6 Qd5-+) 30.Re7= Qg4 31.Kh1?? (better 31.Kf1 Qh3 32.Ke1=) 31...Rd1-+ 32.Ne1 Re1 33.Re1 (33.Qe1 Kf8 Combination; 33.Re1 Qh4 Combination) 33...Rf8?? (better 33...Rd8-+) 34.f3 (34.f3 Qh4 35.Ra1-+). oo313oo – anchal, Rated Classical game, lichess.org, 2013.

5.Nf3 ab5 6.Bb5 c6 (6...Bd7 7.Bd7 Qd7 8.d3 f6 9.Ba3 Nh6=) 7.Be2 Bg4 8.Bc3 e6 9.Ne5 Be2 =.

5.Nf3 Nc4 6.Bc4 dc4 7.ba6 Ra6 8.Qe2 Qd5 9.Nc3 Qc5 =.

5.Nf3 Nf6 A) 6.Bd4 Nc4 (6...e6 7.Nc3 ab5 8.Bb5 c6 9.Bd3 b5=; 6...ab5 7.Bb5 Bd7 8.Nc3 Bb5 9.Nb5 c6=; 6...Bg4 7.ba6 ba6 8.h3 Bf5 9.Be2 Nc6=) 7.ba6 Ra6 8.Ne5 c5 9.Nc4 cd4=; B) 6.Ne5 c6 (6...Nd7 7.ba6 ba6 8.c4 Rb8 9.Qc2 dc4=; 6...ab5 7.Bb5 c6 8.Bd3 g6 9.Qf3 Bg7=; 6...Qd6 7.Be2 ab5 8.Bb5 c6 9.Be2 Nd7=) 7.ba6 b6 8.Bc3 Nd7 9.Qh5 Ne5=; C) 6.Nc3 ab5 (6...Qd6 7.ba6 ba6 8.d4 Rb8 9.Rb1 e6=) 7.Bb5 c6 8.Be2 Bg4 9.Ne5 Be2=; D) 6.Be5 Nc4 (6...ab5 7.Bb5 c6 8.Be2 Bg4 9.Bf6 Bf3=; 6...Ng4 7.Bd4 e6 8.ba6 ba6 9.Bc3 Nc6=) 7.Bc4 dc4 8.Nc3 Nd7 9.0-0 f6=; E) 6.Na3 ab5 (6...e6 7.Be2 ab5 8.Nb5 c6 9.Bf6 gf6=; 6...c6 7.ba6 b6 8.Be2 Ba6 9.Ba6 Ra6+=) 7.Bb5 c6 8.Be2 Bg4 9.0-0 Bf3+=; F) 6.ba6 ba6 (6...b6 7.Ne5 Ba6 8.Ba6 Ra6 9.Qe2 Qc8=) 7.Be2 Rb8 8.Be5 Nc6 9.d4 e6=.

6.Bc3 Nc6 (6...c5 7.Nf3 Nc6 8.d4 c4 9.e4 e6=) 7.Nf3 Rb8 8.Bd3 Qd6 9.Qe2 Nb4 =.

6.c4 Nc4=+ 7.Bc4 dc4 8.Qa4 Bd7 9.Qc4 Bb5 10.Qe4 Nf6 (10...Rb8 11.Bd4=+) 11.Qf3 (11.Bf6 gf6 12.Nc3 Rb8+=) 11...e6 (11...Rb8!? 12.Bf6 ef6=+) 12.Bf6= gf6 13.Nc3 Bg7? (better 13...Rb8!?=) 14.Nb5+- ab5 15.Qc6 Kf8 16.Qb5 f5 17.d4 Qd6 18.a4 (18.Nf3 Ke7+-) 18...Ke7 19.Qc5?? (19.Rb1 Rhc8 20.Nf3 c5+-) 19...e5 (better 19...Qc5 20.dc5 Ba1–+) 20.Qd6+- cd6 21.Nf3 (21.de5 de5 22.Ne2 e4+=) 21...e4 (21...Ra5!?+=) 22.Nd2+- Rhb8 23.0-0 Rb4 24.a5 Rb5 25.Nc4 (better 25.a6!? Rb6 26.Ra5+-) 25...d5= 26.Nb6 Raa5 27.Ra5 Ra5 28.Rc1 Kf6 (28...f4 29.g4=+) 29.h3 Kg5 (29...f4 30.Rc5 Rc5 31.dc5=+) 30.Rc7+= Kg6 (30...Kf6 31.Rc5 Rc5 32.dc5=) 31.h4 (31.Rd7 f4+-) 31...h5 (31...Rb5 32.Na4 Kf6 33.Kh2+=) 32.Rc6 (better 32.Rd7!? f4 33.Nd5 fe3 34.fe3+-) 32...Kh7+= 33.Kh2 (33.g3+=) 33...Ra2 (better 33...f4=) 34.Kg3 Ra6 35.Kf4 Bf8 36.Kf5 Be7 37.g3 (better 37.Rc7!? Bd8 38.Rf7 Kg8 39.Rd7 Bb6 40.Rd5+-) 37…Bd8+-. GuestVVXJ – GuestHKKV, freechess.org, 2017.

6.Be2 Rb8 7.Bc3 Nc6 8.f4 d4 9.ed4 Nd4 =.

6.Nf3 Rb8 7.Bc3 Nc6 8.Bd3 Qd6 9.Qe2 Nb4 =.

6.Nf3 Nc4 7.Bc4+= dc4 8.Nc3 (8.Na3 Qd5+=) 8...Bg4 (8...Rb8 9.Rb1+/-) 9.0-0 (9.Qe2 Rb8 10.Rb1 e6+/-) 9...e5 (9...Rb8 10.Rb1+=) 10.e4 f6 11.Rb1 Rb8 12.Qe2 Bc5 13.Nd1 Qd7 14.Qc4+= Bf3 15.Qc5+/- Qg4? 16.Ne3+- Qg6 17.Ba3 (17.Ba3 Rc8 18.Rb3 Be4 19.f3 Bc2 20.Nc2+-) 1–0. mr (2260) – matozo (1975), net–chess.com, 2008.

6.Qh5 Qd6 (6...Rb8 7.Bc3 Nc6 8.Nf3=+) 7.Nc3 (better 7.Be5 Qe6 8.Bc7+=) 7...Qh6?? (better 7...Nf6 8.Qg5 Rb8=+) 8.Qd5+- Qc6?? (8...Nc6 9.Nf3 Rb8 10.Ba3+-) 9.Qg5 (better 9.Qa5 Rb8 10.Rb1+-) 9...Nc4 10.Qf4 (better 10.Rb1!? Rb8 11.Bc4 Qc4 12.Nge2+-) 10...Nb2+= 11.a4?? (better 11.Qb4+=) 11...Be6 (better 11...Rb8!?–+) 12.Nf3-/+ Nc4 13.Be2 Nf6 14.d3?? (14.Ng5 Nb6 15.Ne6 fe6 16.0-0–+) 14...Nd6 (better 14...Ne3 15.fe3 Qc3 16.Kf2 g6–+) 15.Nd4?? (15.Qb4–+) 15...Qg2 (better 15...Qc3 16.Kd1 Qa1 17.Kd2 Qh1–+) 16.Bf3+- Nh5? (16...g5 17.Bg2 gf4 18.Ba8+-) 17.Bg2 (17.Qe5!? Qh3 18.Ba8 Bg4 19.Bc6 Bd7+-) 17...Nf4 18.Ba8 (18.ef4?! Rb8+=) 18...g6 (18...c5 19.Ne6 Ne6+-) 19.ef4 Bh6 (19...Bg7 20.Bc6 Bd7 21.Bd7 Kd7 22.Nde2+-) 20.Ne6 (20.Bc6!? Kf8 21.Ne6 fe6+-) 20...fe6 21.Ne2 Nf5 (21...Kd7 22.Be4+-) 22.0-0-0 (better 22.Bc6!? Kf7+-) 22...0-0 23.Be4 Nd6 24.Rhg1 (better 24.Kd2+-) 24...g5 (24...Ne4 25.de4 Bf4 26.Nf4 Rf4+-) 25.fg5 Bg7 26.g6 (26.f4 c5+-) 26...h6 (26...Ne4 27.gh7 Kh7 28.de4 Rf2+-) 27.Nf4! Rf4 28.f3 Rf8 29.h4 Rb8 30.Rd2 (better 30.Kd2!? h5+-) 30...Rb4 (30...Bd4 31.Rf1 Be3+-) 31.Rgg2 (31.Re2 Ra4 32.Kd2 Nb5+-) 31...Be5 (31...Bb2 32.Kd1 Bc3 33.g7+=) 32.Kd1 (32.c3 Bc3 33.Rc2 Bf6+-) 32...Ra4 (32...Bc3!?+-) 33.Ke2 a5 34.Ke3 Rb4 35.d4 (35.c4 Rb3 36.Rc2 c5+-) 35...Bf6 (better 35...Nc4!? 36.Kd3 Nd2=) 36.c3 Rb3 (36...Rc4 37.Rc2 c5 38.Bd3 cd4 39.cd4+-) 37.Rd3 (better 37.Kd3!? c5 38.Rb2+-) 37...a4 (37...Nc4!? 38.Kf4 Bh4+-) 38.Kf4 1–0. hamidrezaderakhshan – Jolebelge, lichess.org, 2020.

5.c4 dc4 6.Qc2 (6.Bc3 a6 7.Ba5 ba5 8.Bc4 Nf6=) 6...Bb7 (6...a6 7.Bc4 Nc4 8.Qc4=+) 7.Nc3 (7.Bc3!?=) 7...e6 8.Ne4 (8.Nf3 c6=+) 8...Qh4 (8...Qd7 9.a4-/+) 9.d3 (9.Nc5 Bc5 10.Bg7 a6+=) 9...0-0-0 (9...Bb4 10.Nc3-/+) 10.Nf3 (10.Rc1=+) 10...cd3 (better is 10...Qh5!?-/+) 11.Bd3= Qg4 12.Rc1+/- Rd7 13.0-0 f5 14.h3 Qg6= 15.Ne5 Qf7?? 16.Nf7+- Rf7 17.Ng5 Rd7 18.Ne6 (18...Ne7 19.Nc7+-) 1–0. wlittle (2130) – kcollins (1980), net–chess.com, 2005.

5.c4 Nc4 6.Bc4 dc4 7.Qe2 -/+.

5.c4 Nc4 6.Bc4 dc4 7.Qf3 Bd7 8.Na3 Be6 (better 8...Nf6!?=+) 9.Qc6+= Bd7 10.Qc4 Nf6 11.Nf3 e6 12.Ne5 Bc8 (12...Bc5!?+=) 13.Qc6+- Bd7 14.Nd7 Nd7 15.Nc4 1–0. GuestWXSH – GuestYTBB, freechess.org, 2019.

5.c4 e6 6.Nf3 (6.cd5 ed5 7.Nf3 a6=) 6...Nc4=+ 7.Bc4 dc4 8.Qc2 (8.Qa4 a6 9.Nc3 Nf6=) 8...Nf6 (8...Qd3 9.Qd3 cd3 10.Ne5=+) 9.Ne5 (9.Qc4 Bb7=) 9...Bb7 (9...Qd5 10.Qc4 Qg2 11.Qc6 Qc6 12.Nc6-/+) 10.Qc4 (10.f3 Nd7 11.Qc4 Ne5 12.Be5 Qg5=+) 10...Nd7 (better 10...Bg2!? 11.Rg1 Bd5-/+) 11.Nc6= Bc6 (11...Qg5 12.0-0=+) 12.bc6 (12.Qc6 a6+=) 12...Nc5 13.Nc3?? (better 13.d4 Ne4 14.0-0=) 13...Bd6?? (better 13...Nd3 14.Ke2 Nb2–+) 14.Nb5 (14.d4 b5 15.Nb5+- (worse 15.Qb5 Rb8 16.dc5 Rb5 17.Nb5 Bc5-/+)) 14...0-0= 15.d4 Ne4 16.a4 (16.Nd6 Qd6 17.f3 Nf6=) 16...a6 (16...Qg5 17.g3=+) 17.Nc3 (17.Nd6 Nd6 (17...Qd6? 18.Ba3 Qd8 19.Bf8 Qf8 20.f3+-) 18.Qc2 Qg5=) 17...Nc3 (17...Qg5 18.Ne4 Qg2 19.Nd6 Qh1 20.Ke2 Qh2 21.Ne4=) 18.Bc3 (18.Qc3 Qg5 19.0-0 Rfd8=) 18...Qh4=+ 19.0-0-0? (better 19.Qe2=+) 19...Qf2–+ 20.Bd2 (20.Rde1 Qg2 21.Rhg1 Qd5 22.Qd5 ed5–+) 20...b5 (20...Qg2 21.Rdg1 Ba3 22.Kd1 Qf3 23.Kc2–+) 21.ab5 ab5 22.Qb5?? (22.Qf1 Qh4 23.Qf3–+) 22...Rfb8 23.Qd3 Ba3 (better 23...Ra2 24.Rhe1 Ba3 25.Qa3 Ra3 26.Re2 Qe2 27.Rg1 Ra2 28.Rd1 Qc4 29.Bc3 Qc3) 24.Kc2 Rb2 (24...Qg2 25.e4 Bb4 26.Rdg1 Ra2 27.Kb1 Qd2 28.Qd2 Rd2 29.Rd1–+) 25.Kc3 Rab8 (25...Qg2 26.e4 Rb6 27.Rhg1 Bb4 28.Kc2 Bd2 29.Ra1 Rc6 30.Kb3 Rb8 31.Ka4 Rcb6 32.Qd2 Ra8 33.Qa5 Qc2 34.Ka3 Ra5) 26.Kc4 (26.Qf1 Rd2! 27.Qf2 Rf2 28.g4–+) 26...Qg2 27.Qa3 (27.e4 R2b4 28.Kc3 Rb3 29.Kc2 Rd3 30.Kd3 Qf3 31.Be3 Rb3 32.Kc2 Qe3 33.Rd2 Rb2 34.Kd1 Qd2) 27...Qd5 28.Kd3 R8b3 (28...R8b3 29.Qb3 Rb3 30.Bc3 Qc6–+; 28...Qb5 29.Kc3 Rb3 30.Kc2 Qc4 31.Bc3 Qc3) 0–1. AhmedSultanov (1760) – t2l4a (1770), lichess.org, 2020.

5.d3 a6 6.a4 ab5 7.ab5 Bb7 8.Nf3 h6 9.c4 e6 10.Bc3 Nf6 11.Be2 g6 (better 11...dc4!? 12.dc4 Qd1 13.Kd1 Ne4=) 12.0-0 Bg7 13.Ba5 (13.c5!?+-) 13...ba5+= 14.c5 0-0 (14...Nd7!? 15.d4 Nc5=) 15.d4 Ne4 16.Nbd2 (better 16.c6!? Bc8 17.Qe1+-) 16...Nc3=+ 17.Qe1 Qd7?? (better 17...c6=+) 18.c6+- Bc6 19.bc6 Qc6 20.Nb1 (20.Bd3 Na4+-) 20...Ne4 (20...Ne2 21.Qe2 Rfc8 22.Qd2+-) 21.Na3 (21.Ra5 Ra5 22.Qa5 Ra8+-) 21...Kh7 22.Qc1 (22.Bd3 Rfb8+-) 22...Qd6? (better 22...Qc1!? 23.Rac1 c5+=) 23.Nb5+- Qe7 24.Qc7 (24.Nc7?! Rac8 25.Nd5 ed5+-) 24...Qc7 25.Nc7 Ra7 26.Nb5 Raa8 27.Ra3 e5? (better 27...Rfc8+-) 28.de5 Nc5 29.Nbd4 a4 30.Nb5 (30.Bb5 Rfb8+-) 30...f6 (30...Nd7 31.Rd1+-) 31.ef6 Rf6 32.Nbd4 (32.Rd1 Rc6+-) 32...Rf7 (32...Rb6 33.Bb5+-) 33.Bb5 Bd4 34.Nd4 h5 (34...Rb8 35.Bc6+- (35.Ba4?! Ra8+-)) 35.Ne2 Rff8 36.Nc3 Rfc8 (36...Rfb8 37.Ba4 d4 38.ed4 Na4 39.Ra4 Ra4 40.Na4+-) 37.Nd5 (worse 37.Ba4 Na4 38.Ra4 Ra4 39.Na4 d4+-; worse 37.Na4 Rcb8 38.Bc6 Ra6+-) 37...Kg7 (37...Ra5 38.Nc3+-) 38.Nb6 (38.Nb6 Rab8 39.Nc8 Rb5 40.Rc3+-) 1–0. moss42 (2165) – Bobbys (1670), ChessWorld.net, 2013.

5.d3 Bf5 6.Nd2 f6 7.Ngf3 e5 8.e4 de4 9.de4 Bg4 10.Be2 Bb4 11.c3 Bf3 12.Bf3 Bc5 13.0-0 Ne7 14.Nb3 Qd1 15.Rfd1 0-0? (better is 15...Nc4!? 16.Nc5 Nb2+=) 16.Nc5+- bc5 17.a4 (better is 17.Ba3!?+-) 17...Nc4+/- 18.Bc1 c6 (18...Rfd8 19.Be2 Rd1 20.Bd1+/-) 19.bc6 (better is 19.Be2!? cb5 20.Rd7+-) 19...Nc6+= 20.Rd5 Nb6? (better is 20...N6a5!? 21.Bd1 Rad8+=) 21.Rc5+- Ne7 (21...Rfc8 22.Bg4 Rc7 23.a5+-) 22.Be3 (22.Rc7 Ng6 23.Bg4 Rfe8+-) 22...Ng6 (22...Rfc8 23.Bg4 Rc5 24.Be6 Kf8 25.Bc5+-) 23.a5 Nd7? (23...Nc8+-) 24.Rc7 Rfd8 25.Rd1 Ndf8 26.g3 (26.Rd8 Rd8 27.a6 Nf4+-) 26...a6? (26...Rdc8 27.Rc8 Rc8 28.Ba7 Rc3 29.a6+-) 27.Bb6 (27.Rd8 Rd8 28.Be2 Nd7+-) 27...Rd1 (27...Rdc8+-) 28.Bd1 Rd8 ½–½. Valpa – Djpnola, playchess.de, 2004.

5.Nf3 a6 6.a4 Bd7 7.ba6 Bc8 8.Ne5 f6?? (better 8...c6+=) 9.Bb5+- c6 10.Nc6 Qd6 (10...Nc6 11.Bc6 Bd7 12.Ba8 Qa8+-) 11.Ne5 (11.Ne5 Bd7 12.Bd7 Qd7 13.Nd7 Kd7 14.e4+-) 1–0. DEFFM – GuestKNFG, freechess.org, 2018.

5.Nf3 a6 6.Ne5 f6?? (better is 6...Nf6=) 7.Qh5+- g6 8.Ng6! Nc4 (8...hg6 Exploits the pin 9.Qh8) 9.Ne5 1–0. marekt – Deim, internet, 2007.

5.Nf3 Bb7 6.Be2 e6 7.0-0 Bd6 8.a4 Nf6 9.d3 0-0 10.c4 dc4 11.dc4 Ng4 12.h3 Bh2?? (better 12...Nf6=) 13.Nh2+- Nh2 14.Kh2 Qd1 (14...Qg5 15.Rg1+-) 15.Rd1 (15.Bd1?! Nc4 16.Bc3 a6+-) 15...Rad8 16.Nd2 c5 (16...Rd7 17.Bc3+-) 17.Nf3 (better 17.Bc3!? Rc8+-) 17...Rd1 (17...Bf3 18.gf3 (worse 18.Bf3 Nc4 19.Bc3 f6+-) 18...f6 19.Bc3+-) 18.Rd1 (18.Bd1?! Nc4 19.Bc3 Rc8+-) 18...Re8 (18...f6 19.Nd2 Ba8 20.Bc3+-) 19.Bc3 h6 (19...Bf3 20.gf3 Nb3 21.Bd3+-) 20.Ba5 ba5 21.Rd7 Be4 22.Ra7 Bf3 (22...Ra8 23.Ra8 Ba8+-) 23.Bf3 Kf8 24.Ra5 (better 24.b6 g5 25.Ra8 Ra8 26.Ba8 Ke7+-) 24...f5 (24...Rb8+-) 25.Ra8 Ra8 26.Ba8 Ke8 27.b6 Kd8 28.b7 (better 28.a5+-) 28...Kc7 29.a5 Kb8 (29...g5 30.a6 Kb8 31.f4 gf4 32.ef4+-) 30.a6 Ka7 (30...g5 31.f4 g4 32.hg4 fg4 33.e4 g3 34.Kg3 h5 35.f5 Kc7 36.a7 Kb6 37.b8Q Ka6 38.Qb5 Ka7 39.Qb7) 31.Kg3 g5 32.f4 gf4 (32...Kb8 33.Kf3 Ka7+-) 33.Kf4 Kb8 34.Ke5 h5 (34...Kc7 35.a7 Kb6 36.b8Q Ka6 37.Qb5 Ka7 38.Qb7) 35.Kd6 e5 (35...f4 36.a7! Ka7 37.Kc7 Ka6 38.b8Q fe3 39.Qb6) 36.Kc6 f4 (36...Ka7 37.Kc7 Ka6 38.b8Q h4 39.Qb6) 37.Kb6 fe3 38.a7 1–0. retiponziani (1900) – ksugrad, ChessWorld.net, 2015.

5.Nf3 Bb7 6.Be2 e6 7.0-0 Nf6 8.Bc3 Nc4 9.Bc4 dc4 10.Qe2 Bd5 11.Ne5 Ne4 12.Nc4 Bc4 13.Qc4 Nc3 14.Qc6 Ke7 15.Nc3 g6 16.a4 Bg7 17.Rfd1 Qd6 18.Qd6 cd6 19.a5 d5 20.ab6 ab6 21.Ra6 Bc3 22.dc3 Ra6 23.ba6 Ra8 24.Ra1 Kd6 25.f4 Kc6 26.h4 Kb5 27.a7 Kc4 28.Ra3 b5 29.g4 b4 30.cb4 Kb4 31.Rb3 Kc4 32.Rb7 Kc3 33.Rf7 Kd2 34.Kf2 Kc2 35.Rh7 Kc3 36.Rg7 Kd3 37.Rg6 Ra7 38.Re6 Ra2 39.Kf3 Rh2 40.h5 Rh3 41.Kg2 Re3 42.f5 d4 43.h6 Re2 44.Re2 Ke2 45.h7 d3 46.h8Q d2 47.Qb2 Ke1 48.Qc3 Ke2 49.Qf3 Ke1 50.Qf1# 1–0. Bonetti,Shane – BillF, ICC, 2002.

5.Nf3 Bb7 6.Be2 e6 7.0-0 Nf6 8.Ne5 Qe7 (8...Bd6 9.f4=) 9.Bc3 (9.Ba3 Qd8 10.Bf8 Rf8+=) 9...0-0-0 (9...Nd7!?+=) 10.Ba5+- ba5 11.d4 Nd7 (better 11...h5!?+-) 12.Nc6+- Bc6 13.bc6 Nb6 (13...Nb8 14.c4 h5 15.cd5 ed5 16.Nc3+-) 14.Qd3 Nc4 15.Nd2 Qb4 16.c3 (16.Rab1 Qa4 (16...Qd2?? 17.Qd2 Bb4 18.Bc4+-) 17.e4 Rd6 18.ed5 Nd2 19.Qd2 Rd5 20.Ba6 Kd8+-) 16...Qb5 (16...Qa4 17.e4 Rd6 A) 18.Nc4?! Qc4 19.Qb1 Qc6+- (19...Qe2?? 20.Qb7 Kd8 21.Qb8 Ke7 22.Qc7 Kf6 23.e5 Kg6 24.ed6+-); B) 18.ed5 Nd2 19.Qd2 Rd5 20.Ba6 Kd8 21.Rab1+-) 17.Nc4 (17.e4 g6 18.ed5 ed5+-) 17...dc4 18.Qc2 Qc6 19.Bf3 Qa6 (19...Rd5 20.Rab1+-) 20.Rfb1 Bd6 (20...Kd7 21.Qa4 Ke7+-) 21.Qa4 h6 (21...c6 22.Bc6 Bc7 23.Bb7 Qb7 24.Rb7 Kb7 25.Rb1 Bb6 26.Qc4+-) 22.Rb2 (22.Be2!? Bh2 23.Kh2 Rd6 24.Bc4 Qc6+-) 22...c6 23.Bc6 Kc7 (23...Bc7+-) 24.Rb7 Qb7 (24...Kc8 25.Rf7 Bc7 26.Rb1+-) 25.Bb7 Kb7 26.Rb1 Kc7 27.Qc4 Kd7 28.Rb7 Ke8 29.Qc6 Kf8 30.Rd7 Rd7 31.Qd7 Be7 (31...Bh2 32.Kh2 g6+-) 32.Qc8 Bd8 33.Qd8 1–0. GuestPDGQ – GuestDMCS, freechess.org, 2020.

5.Nf3 Nc4 6.Bc4 dc4 7.0-0 Bd7 8.Ne5 Bb5 (8...Nf6 9.Qf3 a6 10.Nc3+-) 9.Qh5 (better 9.Nf7 Kf7 10.Qh5 g6 11.Qb5+-) 9...Qd5?? (better 9...Nh6+-) 10.Nc3 Qe6 (10...g6 11.Nd5 gh5 12.Nc7 Kd8 13.Nb5+-) 11.Nb5 Rc8 12.Na7 g6 (12...Ra8 13.Nb5 Rc8 14.Qf3+-) 13.Qf3 c5 (13...Bg7 14.Nc8 Be5 15.Be5 f6 16.Bc7 Qc8 17.Bb6 c3 18.dc3 Qc3+-) 14.Nc8 Bg7 15.Qa8 Be5 16.Nb6 (16.Nb6 Bb8 17.Qb8 Qc8 18.Qc8) 1–0. guest604 – guest599, chessclub.com, 2020.

5.Nf3 Nc4 6.Bc4 dc4 7.0-0 Bg4 8.h3 Bh5 9.g4 Bg6 10.Qe2 Qd5 (10...e6 11.Nc3+-) 11.Nc3 Qb7 12.Ne5 e6 13.Qc4 (better 13.f3+-) 13...0-0-0? (better 13...Bd6!? 14.Ne2 Ne7+-) 14.d3+- Nf6 (14...Ne7 15.a4 h5 16.e4 hg4 17.hg4+-) 15.Nc6 Rd6 (15...Bc5 16.Qa4+-) 16.a4 (16.e4 Ne8 17.f4 a6+-) 16...Nd7 (16...Kd7 17.Ne5 Ke8 18.Ba3+-) 17.a5 Nc5 (17...Nb8 18.ab6 Rc6 19.bc6 Qb6+-) 18.ab6 f5 (18...Qb6 19.Na7 Kd7+-) 19.Ra7 Qb6 20.Ra8 Kd7 (20...Qb8 21.Rb8 Kd7 22.Rd8) 21.Rd8 1–0. GuestTBLL – GuestNSLY, freechess.org, 2020.

5.Nf3 Nc4 6.Bc4 dc4 7.Na3 Be6 (7...a6 8.Qe2+=) 8.0-0 Nf6 (8...a6 9.Qe2+-) 9.d3 (9.Qe2 a6+-) 9...cd3+= 10.cd3 Bg4 11.h3 Bf3 (11...Bh5 12.g4 Bg6 13.Ne5+=) 12.Qf3+- (worse 12.gf3 Qd7=+) 12...e6 (12...Qd5 13.e4 Qd7 14.Rfc1+-) 13.Rac1 (13.Bf6 gf6 14.Qc6 Ke7+-) 13...Bd6 (13...Nd5 14.Nc4+-) 14.Qc6 Kf8 15.Nc4 Rc8?? (15...a6 16.Nd6 cd6 17.ba6+-) 16.e4 (better 16.Nd6 Ra8 17.Qc7+-) 16...Ne8 (16...Bf4 17.Rc3 Qe8 18.Qe8 Ne8 19.Ba3 Kg8 20.g3+-) 17.e5 (better 17.Nd6!? Qd6 18.Qd6 Nd6 19.Ba3+-) 17...Bc5 18.d4! Qd4?? (18...Bd4 19.Rcd1 Decoy) 19.Bd4 Bd4 (19...Bd4 20.Qd7 Rb8 21.Qd4 a6+-). GuestVWGW – ktiink, freechess.org, 2017.

5.Nf3 Nc4 6.Bc4 dc4 7.a4 Bg4 8.Na3 Qd5 9.h3 Bf3 (9...Bf5 10.Qe2+=) 10.Qf3+- (10.gf3?! e5+=) 10...Qf3 11.gf3 Nh6 12.Nc4 Nf5 (12...a6 13.Rg1+-) 13.Rg1 White prepares the advance a5 13...f6 14.e4 Nh4 15.Ke2 0-0-0 16.a5 e5 (better 16...Ng6+-) 17.ab6 cb6 (17...ab6 18.Be5! fe5 19.Ra8 Kd7 20.Ne5 Ke6 21.Rd8 Ke5+-) 18.Ra7 Bc5 (18...Ng6 19.Nb6 Kb8+-) 19.Rgg7 Ng6 (19...Kb8 20.Ba3 Rd2 21.Kd2 Nf3 22.Kc1 Rd8 23.Rab7 Ka8 24.Bc5 Rd1 25.Kd1 bc5 26.Nb6) 20.Ra8 1–0. GuestSTMY – GuestXBFS, freechess.org, 2017.

5.Nf3 c5 6.bc6 Nc6 7.Bb5 Bd7 8.0-0 a6 9.Be2 Nf6 10.d3 h6 11.Nbd2 e6 12.c4 Bc8 13.cd5 Nd5 14.Qb3 b5 15.Rfc1 Bb7 16.Ne4 Na5 17.Qd1 Rc8 18.Rc8 Qc8 (better is 18...Bc8!? 19.Rc1 Bb7+=) 19.Bg7!+- Bg7 20.Nd6 Ke7 (20...Kd7 21.Nc8 Nc3 22.Nb6 Kc7+-) 21.Nc8 Bc8 (21...Rc8 22.d4+-) 22.Rc1 Bd7 (22...Nc3 23.Qd2 Ne2 24.Qe2+-) 23.Qd2 Nc6 24.e4 Nf6 25.Qe3 Rg8 (25...Rc8+-) 26.Rc6! Bc6 27.Qc5 Kd7 (27...Kd8 28.Qc6 Ne8 29.Qa6 Nc7+-) 28.Ne5 Kc7 29.Qc6 (29.Qc6 Kd8 30.Qb7 Ke8 31.Nc6 Ne4 32.Qe7) 1–0. Fournier,Frederic (1925) – Kapavlanca (1800), Active (5/12), 2004.

5.Nf3 Bd7 6.a4 Nf6 7.Be2 c6 8.0-0 cb5 9.ab5 e6 10.Na3 Bc5 11.Ne5 0-0 12.Nb1 Ne4 13.f3 Nf6 14.Ra4 Bd6 15.f4 Ne4 16.Nc3 f6 (16...Nc3!? 17.Bc3 a6 18.Nd7 Qd7+=) 17.Ne4+/- de4 18.Nd7 Qd7 19.Re4 f5 (19...a6 20.ba6 b5 21.Qb1 Ra6 22.Bc3+-) 20.Rd4+- Qc7 21.Qa1 Bc5 22.Ra4 Qd6? (better is 22...Rfd8 23.Bc3 Rac8+-) 23.d4 (23.Bg7?! Qd2 24.Bf3 Rac8 25.Bf8 Qe3 26.Kh1 Bf8+-) 23...Bb4 24.c3 Nb3 (24...Bc5 25.Qa2 Rfe8 26.dc5 Qc5 27.Rd4+-) 25.Qd1 Ba5 (25...Nc5 26.Rb4 (26.cb4?! Na4 27.Qa4 Rac8+-) 26...Ne4 27.Ra4+-) 26.Qb3 1–0. Janek – Stephen, internet, 2016.

5.Nf3 Bd7 6.Nc3 e6 7.Ne5 Bc8 (7...Nf6 8.Be2+=) 8.f4 Nc4? (better is 8...Bb7!?+=) 9.Bc4 (9.Nc4 dc4 10.Qf3 Rb8+-) 9...dc4 10.Qf3 Rb8 11.Qc6 Bd7 12.Qc4 (worse is 12.Qd7 Qd7 13.Nd7 Kd7+/-) 12...Bd6 13.Nd7 Qd7 14.Ne4 Ne7?? (better is 14...f6+-) 15.Bg7 (15.Nd6?! cd6 16.0-0 0-0+/-) 15...Rf8 (15...Nd5 16.Bh8 Be7+-) 16.Nf6 (16.Nf6 Kd8 17.Nd7 Kd7 18.Bf8 Rf8 19.a4+-) 1–0. b4player – oppo, internet, 2009.

5.Nf3 Bd7 6.d4 c6+= 7.a4 Nf6 8.Be2 (8.Ne5 Qc7+=) 8...cb5 (8...g6 9.Ne5+=) 9.ab5 Nc4 (9...Qc7 10.Nbd2+=) 10.Bc4+- dc4 11.0-0 Bb5 12.Nc3 Bc6 13.Ne5 Bb7 14.Qe2 Nd5?? (better 14...e6+-) 15.Qc4+- Nc3 (15...Rc8 16.Qb5 Bc6 17.Nc6 Qd7 18.Na7 Qb5 19.Nab5 e6+-) 16.Qf7 (16.Bc3?! Qd5 17.Qd5 Bd5+=) 1–0. GuestPCMQ – GuestXDWG, freechess.org, 2020.

5.Nf3 f6 6.d4 h5 (6...a6 7.Bc3+=) 7.Bd3 f5 (7...a6 8.Nbd2+/-) 8.Nbd2 e6 9.Ne5 Ne7 (9...Bd6 10.Bc3+/-) 10.Ndf3 Qd6 11.c3 Kd8?? (better is 11...c6+/-) 12.Nf7+- Kd7 (12...Ke8 13.Nd6 cd6 14.Ba3+-) 13.Nd6 (13.Nh8 Nec6+-) 13...Kd6 (13...cd6 14.Ng5+-) 14.Ne5 Rh7 15.0-0 (15.Ba3 c5 16.bc6 Kc7+-) 15...g5 (15...c5 16.dc5 bc5 17.c4+-) 16.h3 (better is 16.Ba3!? c5+-) 16...g4 17.h4 a6 (17...c5 18.c4+-) 18.Ba3 c5 19.bc6 (19.Qa4 Kc7 20.dc5 Kd8 21.ba6 Nc4 22.Bc4 dc4 23.cb6 Ra6 24.Be7 Ke7 25.Qb4 Kf6 26.Qf8 Ke5 27.Qc8 Ra5+-) 19...Kc7 20.Be7 (better is 20.c4!? dc4 21.Nc4 Nc4 22.Bc4 b5+-) 20...Be7 21.f3 (21.Rc1 Bh4 22.c4 dc4 23.Bc4 Be7+-) 21...Rh6 (21...Bh4 22.c4 dc4 23.Bc4+-) 22.fg4 hg4 23.g3 Ba3 24.Rb1 b5 25.Qd2 Bd6 26.e4 Rh7 27.ed5 ed5 28.Bf5 Rf7 29.Nf7 Bg3 30.Bc8 Rc8 31.Ne5 Bh4 32.c4 dc4 33.Qa5 Kd6 34.Qa6 Kd5 35.Qc8 c3 36.Rb5 Kd4 37.Qg4 Ke3 38.Qf3 Kd2 39.Qd3 1–0. madik – atuvi, gameknot.com, 2008.

5.Nf3 h6 6.Be2 e6 7.0-0 (7.Ne5 Bd6+=) 7...Nc4 (7...a6 8.Ne5 Nf6 9.f4+=) 8.Bc4+- dc4 9.Ne5 Bd7 (9...Nf6 10.Qe2+-) 10.Qf3 Nf6 11.Nc6 Bc6 12.Qc6 (12.bc6?! Qd5=) 12...Nd7 13.f4 Bd6 (better 13...a6!?+-) 14.Bg7+- Rg8 15.Bh6 Ke7 (15...a6 16.Bg5 (16.Qc4 Qf6=+) 16...f6 17.f5+- (worse 17.Qc4 Rh8+-)) 16.Nc3 (better 16.Qc4 a6 17.Nc3+-) 16...e5?? (better 16...Rg6 17.Bg5 f6+-) 17.Nd5 Ke6 (17...Ke8+-) 18.f5 1–0. GuestZSNL – GuestZKWN, freechess.org, 2019.

5.f4!?

6.Bd3 h6 7.0-0 Nf6 8.Nc3 (8.Ne5 Bb7+=) 8...Be7 9.e4 (9.Ne5 0-0+=) 9...de4 (9...0-0 10.Re1+=) 10.Ne4 0-0 (10...Bb7 11.Qe2+=) 11.Qe2 (better 11.Nf6 Bf6 12.Ne5+=) 11...Ne4?? (better 11...Bb7+=) 12.Qe4+- (12.Be4?! Bb7+=) 12...f5 13.Qa8 Qd6 14.Be5 (14.Qa7 Bb7 15.Be5 Qc5+-) 14...Qb4 (14...Qc5 15.Qb8 Bd6+-) 15.Qa7 Bb7 (15...Bd6 16.Bc3 Qc5 17.Rfe1+-) 16.Bc7 Bf3 (16...Qg4 17.h3 Qg6 18.Be2+-) 17.gf3 Bc5 (17...Nc4 18.Rfb1 Qc5 19.Bc4 Qc4 20.Qb6+-) 18.Bb6 Bb6 19.Qb6 Rf6 20.Rae1 Kf7 21.Qc7 Kg6 22.Qg3 (better 22.Kh1 Qf8+-) 22...Kh7 (22...Kf7 23.Kh1 Qc5+-) 23.Re6! Qd2 (23...Re6 24.Bf5 Double attack (24.Bf5 Decoy)) 24.Rf6 gf6 25.Bf5 Kh8 26.Qb8 Kg7 27.Qc7 Kf8 28.Be6 Qg5 (28...Ke8 29.b6 Qg5 30.Kh1 Qg6 31.Qd7 Kf8 32.Qd8 Qe8 33.Qf6 Qf7 34.Qf7) 29.Kh1 Qg7 (29...Qg6 30.Qd8 Qe8 31.Qf6 Qf7 32.Qf7) 30.Qd8 1–0. DEFFM – SkorpionEST, freechess.org, 2019.

6.d4 Bd6 7.Bd3 Nf6 8.0-0 0-0 9.Nbd2 c6 (9...Bb7 10.Qe2=) 10.e4 (10.a4!?+=) 10...de4= 11.Ne4 Ne4 (11...cb5 12.Nd6 Qd6 A) worse 13.Bb5 Qb4 14.Qd3 a6-/+ (14...Qb2 15.Rfb1 Qa1 16.Ra1+-); B) 13.Ne5=+) 12.Be4 Bb7 13.Qd3 (13.a4!?+=) 13...f5=+ 14.Bc6 Nc6 15.bc6 Bc6 16.Rfe1 Bd5 (16...Be4 17.Qb3 Re8 18.c4=+) 17.c4= Be4 18.Qb3 a5 (18...Rc8 19.Rad1=) 19.Nd2 (better 19.g3=) 19...Qh4 (better 19...Bg2!? 20.Kg2 Qg5 21.Kf1 Qd2=) 20.g3+- Qg5 (20...Qf6 21.Re2+-) 21.Ne4+- fe4 22.Re4 Qf5 23.Qe3 e5? (better 23...Rf6!?+-) 24.de5 Bc5 25.Bd4 Bd4 26.Qd4 (26.Rd4 Qf3 27.Qd2 Rae8+-) 26...Rad8 27.Qe3 Qc8 (27...Qf3 28.Qf3 Rf3 29.Rb1+-) 28.Qb6 Rd2 (28...Qf5 29.Rae1 Rb8 30.Qc5+-) 29.e6 Rff2 (29...Qb8 30.Qe3 Qb2+-) 30.Qf2 Rf2 31.Kf2 Qc5 (31...Qb7 32.Rd1 h5 33.Rd8 Kh7 34.e7 Qe4 35.e8Q Qc2 36.Qe2 Qf5 37.Kg2+-) 32.Kg2 Qf5 (32...Qc6 33.Kf3 Kf8 34.e7 Ke8+-) 33.Rae1 Qg5 34.e7 Qd2 (34...Qg6 35.e8Q Qe8 36.Re8 Kf7 37.c5 Kf6 38.c6 g6 39.R1e7 h6 40.c7 Kg5 41.c8Q Kh5 42.Re5 g5 43.Rg8 a4 44.Qh3) 35.R1e2 (35.R1e2 Qd7 36.e8Q Qe8 37.Re8 Kf7 38.c5 Kf6 39.c6 Kf7 40.c7 a4 41.R2e6 h6 42.c8Q a3 43.Qc7) 1–0. GuestRHGZ – abowalid, freechess.org, 2019.

6.d4 Bd7 7.Nbd2 Be7 8.Be2 Nf6 9.c4 dc4 10.Nc4 Bb5 11.Na5 Bb4 12.Nd2 Be2 13.Qe2 (13.Qa4!? Qd7 14.Qb4 ba5 15.Qa5=) 13...Ba5+= 14.0-0 0-0 15.Nc4 Bb4 16.e4 Be7 17.Rac1 c5 18.Rfd1 Qc7 19.d5 ed5 20.ed5 Rfe8 21.Be5 White plans d6 21...Qb7 The isolani on d5 becomes a target 22.d6 Bd8 23.Qb2 Qe4 24.f3 Qg6 25.d7 Re7? (better is 25...Re6+=) 26.Qb5+- Qf5?? (26...Nh5 27.Qa6 Qc6+-) 27.Qc6 Rd7 28.Qa8 b5 (28...h5 29.Bc7! Kh7 30.Bd8 Rd1 31.Rd1 Qc2+-) 29.Qd8 Rd8 30.Rd8 Ne8 31.Re8 1–0. phildo (1915) – dragoneye, gameknot.com, 2014.

6.d4 Bd7 7.Bd3 Qe7 (better 7...Nc4!? 8.Bc4 dc4=) 8.Ne5 f6?? (8...c5 9.0-0 c4=) 9.Ba3+- Qd8 (9...fe5 10.Be7 Ne7 11.Qh5 Kd8 12.de5 c5+-) 10.Qh5 g6 11.Bg6! (11.Bg6 hg6 12.Qg6) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 f6 7.a4 g5? (7...Bd6 8.0-0=) 8.Nd4 (better 8.Ng5 Nh6 9.Bd3+-) 8...e5?? (better 8...Ne7+=) 9.Bh5+- Ke7 (9...Kd7 10.Nc6! Nc6 11.Qg4 Kd6 12.Ba3 Nb4 13.Qb4 c5 14.bc6 Kc6 15.Qf8 Qf8 16.Bf8 h6+-) 10.Nc6 (better 10.Ba3 Qd6 11.Bd6 Kd6 12.Nb3 Nb3 13.cb3+-) 10...Nc6= 11.bc6 Qd6?? (better 11...Kd6+=) 12.Ba3+- 1–0. GuestHSHW – GuestLTFV, freechess.org, 2017.

6.Nc3 e6 7.a3 Be7 8.Na2 0-0 9.Nb4 c5 (9...a6 10.Na6 c5 11.Rb1=) 10.bc6+= Bb4 (10...Nc4 11.Bc4 dc4 12.Ne5+=) 11.c7 (11.ab4 Nc6 12.b5 Na5+=) 11...Qc7 (11...Bd2!? 12.Nd2 Qc7 13.Bf6 gf6=+) 12.ab4+= Nc4 13.Bf6 gf6 14.Be2 e5 15.0-0 Bf5 16.Nh4 Bg6 (16...Be6 17.f4+=) 17.Bd3 (17.f4 h6+/-) 17...e4 (17...a5!?=) 18.Be2 Ne5 19.d4 Nd7 (19...Nc4 20.b5+=) 20.c4 (20.Bg4 a5+/-) 20...dc4+= 21.b5 Rad8 (21...c3 22.Qc2+=) 22.Qc2+/- Kg7 (22...Rc8 23.Ra4+/-) 23.Rfc1+- f5 24.Bc4 (24.Qc4 Qc4 25.Rc4 Nf6+-) 24...Nf6 25.Qe2 (25.Qa4 f4 26.Qa7 Qd6+/-) 25...Ng4 (25...f4 26.Kh1+/-) 26.g3 Qe7 27.Ng2 Qg5 (27...Rg8 28.Ra6+/-) 28.h4 (28.Ra7 Qh6 29.h4 Bh5+-) 28...Qh6 (28...Qe7 29.Nf4 h6 30.Bd5+-) 29.Nf4 (29.Ra7 Rd6+-) 29...Nf6 (better 29...Rd7!?+/-) 30.Ra7+- Bh5 31.Qa2 Bf3? (31...Kh8 32.Bf7 (32.Nh5?! Nh5 33.Rd1 Qg7+-) 32...Bf7 33.Rf7+-) 32.Nh3 (32.Ne6 Kh8 33.Nd8 Rd8 34.Bf7 Qf8+-) 32...Qh5?? (better 32...Rd7+-) 33.Ng5 (better 33.Bf7 Qh6 34.Bh5 Kh8 35.Bf3+-) 33...h6 (33...Nd7 34.Bf7 Rf7 35.Ne6 (35.Qf7?! Qf7 36.Nf7 Kf7+-; 35.Nf7?! Qf7 36.Qf7 Kf7+-) 35...Kh8 36.Nd8+-) 34.Nf7 (better 34.Bf7 Qg5 35.hg5 hg5 36.Qe6+-) 34...Qg4 (34...Rc8 35.Ne5 Kh8+-) 35.Nh6 (35.Nd8 Kh8 36.Qa3 Qg8 37.Qe7 Be2 38.Bg8 Rf7 39.Qf7 Ng8 40.Qg7) 35...Kh6=+ 36.Bf1 Nh5?? (better 36...f4 37.ef4 e3= (worse 37...Rd4 38.Qa3 Rdd8 39.Rc6+/-)) 37.Rcc7 (better 37.Rc6 Rf6 38.Qf7+-) 37...Ng3?? (better 37...Rf6 38.Rh7 Kg6+-) 38.Rh7 Kg6 39.Rag7 (39.Qe6 Rf6 40.Rag7) 39...Kf6 40.Rg4 (40.Rf7 Rf7 41.Qf7) 40...Ne2 41.Be2 Be2 (41...Rd7 42.Rh6 Ke7 43.Rg7 Kd8 44.Qa8 Kc7 45.Rc6) 42.Qe2 (42.Qe2 fg4 43.Qc4 Rc8 44.Qd5 Rc1 45.Kg2 Rg1 46.Kg1 Kg6 47.Qh5 Kf6 48.Qg5 Ke6 49.Qe5; 42.Rh6 Ke7 43.Qe6) 1-0. Nf3 (1875) - loth (1620), Rated Classical game, lichess.org, 2013.

6.d4 e6 7.Bd3 Bb4 (7...a6 8.a4=) 8.Nbd2 0-0 9.a3 Bd6 10.c4 Re8 (10...dc4 11.Nc4 Nc4 12.Bc4=) 11.0-0 Ng4 (better 11...a6!?=) 12.Qc2 f5 13.cd5 Bh2?? (better 13...ed5 14.Bf5 Bf5 15.Qf5 Nf6+/-) 14.Nh2+- Qd5 (14...Nh2 15.Kh2 ed5+-) 15.Ng4 fg4 (15...c6 16.e4 Qd6 17.Ne5 cb5 18.Bb5+-) 16.Bh7 Kh8 17.Be4 Qh5 (17...Qb5 18.Ba8 Rf8 19.Be4+-) 18.Ba8 Rf8 (18...Qb5 19.Qg6 Bb7 20.d5+-) 19.Qc7 g3 (19...Qb5 20.Bc3+-) 20.Qg3 (20.fg3 Rf1 21.Rf1 Qe8+-) 20...e5 21.Bf3 Qf7 22.d5 Nb7 23.Be5 Bf5 24.Bh5 Qe7 25.e4 Bg6 26.Bg6 (26.Bg6 Kg8 27.Qh3 Qh4 28.Qh4 Rf7 29.d6 Nd6 30.Bd6 Re7 31.Qh7 Kf8 32.Qh8) 1-0. DEFFM – GuestKBZH, freechess.org, 2021.

6.Be2 Bb7 7.0-0 e6 8.Qc1 Nc4 9.Bc4 dc4 10.Qd1 Bd6 11.d3 0-0 12.Nbd2 cd3 13.cd3 Nd5 14.Nc4 f6 15.Qb3 a6 (15...Be7 16.a4=) 16.a4 (16.Nd6 cd6 (16...Qd6? 17.Ba3 Qd7 18.Bf8 Rf8 19.ba6 Ba6 20.a4+-) 17.e4 Nc7+=) 16...ab5 17.ab5 c6 (better 17...Qd7=) 18.bc6 Bc6 19.Nd4 (better 19.Ra8 Ba8 20.Nd6 Qd6 21.Ba3+-) 19...Bb7? (19...Qc7 20.Ne6 Bh2 21.Kh1+-) 20.e4 (20.Ne6 Qb8 21.Nd6 Qd6 22.Nf8 Qf8 23.Ra8 Qa8+-) 20...Nc7?? (20...Nf4 21.Ra8 Ba8 22.Ne6 Ne6 23.Nd6 Qd6 24.Ba3+-) 21.Nb6 (better 21.Qb6 Be5 22.Ne6 (22.Qb7?! Bd4 23.Ra8 Na8+-) 22...Ne6 23.Qe6 (23.Qb7?! Ra1 24.Ra1 Nc5+-) 23...Kh8 24.Ra8 Qa8 25.Ne5 fe5 26.Be5+-) 21...Ra1+- 22.Ra1 f5 (22...Rf7 23.Ra7 Ba6 24.Na8+-) 23.ef5 (23.ef5 Qh4 24.g3= (24.Ne6 Qh2 25.Kf1 Qg2 26.Ke1 Qg1 27.Ke2 Qg4 28.Kd2 Rf7=); better 23.Ne6!? Ne6 24.Qe6 Rf7 25.Nc4+-) 1–0. retiponziani (1880) – c_nolan, ChessWorld.net, 2009.

6.Ne5 Qd6 7.Qf3 Be6 8.Be2 g6 9.d4 Bg7 10.Ba3 Qd8 11.Bb4 0-0 12.Ba5 ba5 13.c4 dc4 14.Bc4 Bc4 15.Nc4 Nd5 (15...a6 16.a4 Qd5 17.Qd5 Nd5 18.Kd2+=) 16.0-0 Nb4 17.a3 (17.Na5?! Nc2 18.Nc6 Qd6+/-) 17...Nd5 18.Na5 e6 19.Nc6 Qd6 20.Nd2 f5 21.Qe2 a6 22.a4 a5 (better is 22...Qd7+-) 23.Nc4 Qd7 24.N4a5 f4 25.Nb7 e5 26.Nc5 Qd6 27.Qc4 ed4 28.e4 (28.Nd4?! fe3 29.Rad1 Rf2 30.Rf2 ef2 31.Kf2 Qf4 32.Kg1 Rd8+-; 28.ed4?! Kh8+-) 28...d3 29.Rad1 (worse is 29.ed5 Ba1 30.Ra1 f3+-) 29...Kh8 30.Qd5 Qf6 31.Nd7 Qc3 32.Rd3 Qc2 33.Nce5 Be5 34.Qe5 Kg8 35.Qd5 Rf7 36.Qa8 Kg7 37.Qd5 Rf5 38.ef5 gf5 39.Qe5 (39.Qe5 Kg8 40.Qe6 Kg7 41.Qf6 Kg8 42.Qf8) 1–0. Nemec,Zdenek (2030) – Bester,Kazimierz, 29. LSS No Engine Cup Preliminary, 2010.

6.Ne5 Bd7 7.a4 (7.Nc3 c5+-) 7...e6 (7...g6 8.Bd3=) 8.Bd3 (8.Qf3 Bd6 9.Nd7 Qd7 10.Bf6 gf6 11.Qf6 Rg8+=) 8...Bd6 9.Nd7 Qd7 10.Qf3 0-0-0 (10...Qe7 11.0-0=) 11.Bf6+= gf6 12.Qf6 Rhg8 13.0-0 Be7 (13...Nc4!? 14.Bc4 dc4+-) 14.Qf7 Rdf8 15.Qh7 (15.Qh5 Bf6 16.Nc3 Rg7+-) 15...Qd6?? (15...Rh8 16.Qg7 Rfg8=) 16.f4?? (better 16.Qh3+-) 16...Rh8-/+ 17.Qg6 Rfg8 18.Qf7 d4?? (18...Nb7 19.Bf5 ef5 20.Qf5 Kb8-/+) 19.e4 (19.Na3 Kb8+-) 19...Rf8? (19...Nb7!? 20.e5 Qd5+-) 20.Qg6 (20.Qg7 Rfg8 21.Qe5 Qd7+-) 20...Rf4+- 21.Rf4 Qf4 22.Qe6 Kb8 23.g3 (23.Qe7?! Qh2 24.Kf2 Qf4 25.Ke2 Qg4 26.Kf2 Qf4 27.Kg1 Qh2 28.Kf1 Qg3=) 23...Qg5 24.Qf5 Qh6 25.Qf2 Bc5 26.Na3 (better 26.Qg2+-) 26...Nb7?? (better 26...Bb4+-) 27.Nc4+- Nd8 (27...Rf8 28.Qg2+-) 28.e5 Ne6 (28...Nb7 29.Rf1+-) 29.Qg2 Ng5 (29...Bb4 30.Rb1 Be7 31.a5+-) 30.h4 Ne6 (30...Nf7 31.a5 Qe6 32.ab6 cb6 33.Qe4+-) 31.a5 (31.Qc6 Nd8 32.Qh6 Rh6+-) 31...Rf8 (31...Rg8 32.Rf1 Nd8 33.ab6 cb6 34.Rf6+-) 32.ab6 cb6 33.Kh2 (33.Qc6 Qg7 34.Kh2 Nd8+-) 33...Nf4 (33...Nc7 34.Qc6 Qc6 35.bc6+-) 34.gf4 Qf4 (34...Qh4 35.Qh3 Qf4 36.Kh1 Qg5+-) 35.Qg3 Qd2 (35...Qg3 36.Kg3 Rh8+-) 36.Nd2 (36.Nd2 a5 37.ba6 Kc8 38.a7 Kd7 39.Bb5 Ke7 40.a8Q Ra8 41.Qg7 Ke6 42.Qf6 Kd5 43.Bc6) 1–0. GuestMZWZ – fakf, freechess.org, 2020.

6.Ne5 e6 7.c4 dc4 8.Nc4 (worse 8.Bc4 Nc4 9.Nc4 Qd5-/+) 8...Nc4 9.Bc4 Bd6 10.e4 (10.Nc3 Bb7=) 10...Bc5 (better 10...Ne4 11.Qg4 Bb7-/+) 11.d4+= Bb4 12.Nc3 (better 12.Bc3!? Qe7 13.a3 Bc3 14.Nc3+=) 12...Bc3 13.Bc3 Ne4 14.Bb2 Qf6 (14...Nd6!? 15.Bd3 a6-/+) 15.0-0= Bb7 16.Qc2 Nd6 17.d5 Nc4?? (better 17...Qf5 18.Bd3 Qd5=+) 18.Bf6+- gf6 19.Qc4 Bd5 20.Qc7 0-0 (20...Rg8 21.f3 Kf8 22.Rfd1+-) 21.Rfc1 Kh8 (21...Rfd8 22.Qg3 Kf8 23.Qh4+-) 22.Rc3 Rg8 (22...Be4 23.Ra3 Rac8 24.Qf4+-) 23.Qf7 Rg2 (23...Raf8 24.Qe7 e5+-) 24.Kf1 Rh2 25.Qf6 Kg8 26.Rg3 1-0. DEFFM – GuestVWPM, freechess.org, 2021.

6.Ne5 e6 7.Be2 Bd6 8.f4 0-0 9.0-0 a6 10.a4 Bb7 11.Qe1 Ne4 12.d3 Nc5 13.Qg3 f6 14.Ng4 Kh8 15.Nd2 Qd7 16.Qh4 ab5 17.Nf6 Qd8?? (better 17...gf6 18.Bf6 Rf6 19.Qf6 Qg7 20.Qg7 Kg7 21.ab5 Nd7+=) 18.Qh7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 Nc4 7.Bc3 (7.Bc4 dc4 8.Qe2 Qd5+=) 7...Nf6 (7...a6 8.a4=) 8.h3 (8.Bc4 dc4 9.Qe2 Qd5=) 8...Bh5 (8...Bf3 9.Bf3 e6 10.d3=) 9.d3 Nd6 10.a4 e6 11.Ne5 (11.Ne5 Be2 12.Qe2=). GuestLGCP – jayfoxmeister, freechess.org, 2017.

6.Be2 Qd7 7.Ne5 Be2 8.Qe2 Qe6 (8...Qf5 9.d3+=) 9.0-0 0-0-0 (9...Nf6 10.f4+=) 10.f4 (better is 10.Bc3+/-) 10...f6?? (better is 10...Nh6+/-) 11.f5+- Qe5 12.Be5 fe5 13.e4 d4 14.d3 Nf6 15.Nd2 (15.Qf3 g6+-) 15...g6 (15...e6 16.Nf3 Bd6 17.fe6+-) 16.Nf3 Ng4 (16...Nd7 17.Ng5 Re8 18.Ne6+-) 17.Ng5 Ne3 18.Nf7 Nf1 (18...Rg8 19.fg6 hg6 20.Nd8 Kd8 21.Rf3+-) 19.Rf1 Bg7 20.fg6 hg6 21.Qg4 Kb8 22.Qg6 Bf6 23.Nd8 Rd8 24.g4 Nb7 (24...a6 25.g5 Bg5 26.Qg5 ab5 27.h4+-) 25.g5 Bh8 (25...Nd6 26.gf6 ef6 27.Qf6 Rg8 28.Kf2 Nb5 29.Qe5+-) 26.Qh6 Kc8 (26...Bf6 27.gf6 ef6 28.Qf6+-) 27.Rf8 Nd6 28.Qe6 Kb7 29.Qd5 Kc8 30.Qa8 Kd7 31.Rd8 Ke6 32.Qd5 1–0. orane – trixster, caissa.com, 2006.

6.Be2 e6 7.0-0 Be7?? (better is 7...Nf6+=) 8.Bg7+- (8.Bg7 Bf6 9.Bh8 Bh8 10.d4+-) 1–0. pierred – anony, internet, 2015.

6.Be2 Bf3 7.Bf3 e6 8.0-0 (8.Be2 Nf6+=) 8...a6 9.ba6 (9.a4 Nc4 10.Bd4 ab5 11.ab5 Ra1 12.Ba1 Nd6+=) 9...Ra6 10.Be2 (10.Bd4 Ne7=) 10...Ra7 11.a4 (11.Nc3 c6=) 11...Nc6 (11...Nf6!?=) 12.Bb5+= Nge7 13.c4 f6 (13...dc4 14.Na3 c3 15.Bc3+-) 14.cd5 (14.Qh5 g6 15.Qh4 Bg7+-) 14...Qd5 15.Nc3 Qg5? (better 15...Qd7+-) 16.f4+- Qg6 17.f5! ef5 (17...ef5 18.Rc1 Combination; 17...Nf5 18.Bc6 Deflection) 18.Qb3 (better 18.Qc2 f4 19.Ne4+-) 18...Kd8? (18...Qf7 19.Nd5 Kd8 20.Bf6 gf6 21.Ne7 Qb3 22.Nc6 Kc8 23.Na7 Kb7 24.Nc6+=) 19.Qe6?? (better 19.Bc6 Nc6 20.Qd5 Bd6 21.Qc6+-) 19...Ne5+= 20.Nd5 (20.Rf4 c6 21.Qd6 Kc8 22.d4 cb5 23.Qe6 (23.de5?! Rd7 24.Qe6 fe5 25.Qe5 b4=) 23...Nd7 24.Nb5+-) 20...c6 (better 20...Qf7 21.Qf7 Nf7 22.Ne7 Be7 23.Rf5 Bd6=) 21.Qd6+- Nd7 22.Bc6 (22.Ne7 Be7 23.Qc6 Bb4+-) 22...Nc6 (better 22...Nc8 23.Qe6 Nc5 24.Qf5 Qf5 25.Rf5 Ne7 26.Ne7 Be7+-) 23.Qc6+- Bc5 24.d4 Nb8 25.Qb5 Ra5 (25...Nd7 26.dc5 Ra5 27.c6 Rb5 28.ab5+-) 26.Qc4 Bd6 (26...Qf7 27.Nb6 Qg8 28.dc5 Qc4 29.Nc4 Rc5 30.Nd6+-) 27.Nb6 (better 27.Rac1 Rd5 28.Qd5+-) 27...Ra7 (27...Qe8 28.Qc8 Ke7 29.Qb7 Nd7+-) 28.Qc8 Ke7 29.Nd5 (29.Qh8 Rb7 30.a5 Qh6 31.Nc8 Kd7 32.Nd6 Rb2 33.Nf5 Qg6+-) 29...Kf7 30.Qh8 Qh6 31.Nf4 (31.h3 Nc6 32.Ba3 Ne7 33.Bd6 Nd5 34.Qf8 Kg6 35.Qe8 Rf7+-) 31...Nd7 32.Ba3 Bf8 33.Bf8 Nf8 34.Rac1 (better 34.Rfc1 g6+-) 34...Re7 (34...g6 35.Rc6 Qg7 36.Qg7 Kg7 37.Ra1+-) 35.Rc8 g5 36.Rf8! Qf8 37.Qf8 (better 37.Qh7 Ke8 38.Qg6 Qf7 39.Qf5 Rd7+-) 37...Kf8 38.Nd5 Rf7 (38...Ra7 39.Rf5 Kf7 40.Nc3+-) 39.Rf5 Kg7 (39...Ra7 40.Nf6 h6 41.a5+-) 40.e4 (better 40.Nf6!? Rb7+-) 40...Ra7 41.Nf6 Ra4 42.d5 (42.Ne8 Kg8 43.Rg5 Kf8+-) 42...Ra6 (42...Kg6 43.d6 Ra1 44.Kf2+-) 43.e5 Kf7 (43...h6 44.e6 Ra1 45.Kf2+-) 44.Rg5 (44.Nh7 Ke7+-) 44...h6 45.Rh5 1–0. GuestFSNV – GuestMJDZ, freechess.org, 2016.

6.Be2 Nf6 7.Bf6 gf6 8.d4 +=.

6.h3 Bf3 7.Qf3 e6 8.a4 (8.Be2 a6+=) 8...Qd6 (8...Nf6 9.Be2+=) 9.Be2 f6 (9...c6 10.0-0+=) 10.Nc3 (10.0-0 c5+/-) 10...0-0-0+= 11.0-0 Kb8 12.d4 Nh6 13.Ba3 Qd7 14.Nb1 (14.Bf8 Rdf8 15.e4 Rd8 16.ed5 ed5+=) 14...Nf5 (14...e5 15.Rd1=) 15.Nd2 (15.Bd3 Nc4 16.Bf5 ef5 17.Bf8 Rhf8+=) 15...h5 (15...Ba3 16.Ra3 e5 17.c3=) 16.Bd3 (16.Bf8 Rdf8 17.c4 g5 18.cd5 g4 19.hg4 hg4 20.Qg4 ed5+/-) 16...Ba3 17.Ra3 Qd6 (17...g5 18.c4+=) 18.Rfa1 Nh4 19.Qe2 f5 20.c4 dc4 21.Nc4+/- Nc4 22.Bc4 g5 23.a5+- Rd7 24.ab6 cb6 25.Qa2 Rhh7 26.Be6 Rde7 27.Bf5! Rhf7 28.Be4 g4 29.hg4 hg4 30.Ra6 Rg7 31.Bc6 Nf3 32.gf3 gf3 33.Kf1 Qh2 34.Bf3 Qh3 35.Ke2 Qh6 36.Qd5 Kc8 37.Rc1 Rc7 38.Qb7 Kd8 39.Qb8 (39…Rc8 40.Rc8 Ke7 41.Qa7 Kf6 42.Qb6 Kg5 43.Qh6 Kf5 44.e4#) 1–0. Van Esbroeck,Dirk – Jatkowski,S, corr WE, 1995.

6.h3 Bh5 7.Be2 f6 8.c4 (8.0-0 a6+=) 8...dc4 (better 8...Nc4!? 9.Qb3 Nb2 10.Qb2 e6=+) 9.Bc4?? (better 9.Bc3+=) 9…Nc4–+ (9...Nc4 10.Bc3 Qd3–+) 0–1. GuestHSHW – GuestLTFV, freechess.org, 2017.

5.Bc1 Nf6 6.d3 Nd6 7.Nf3 (7.c4 e5=+) 7...Nb5-/+ 8.a4 Nd6 9.Be2 g6 10.0-0 Bg7 11.Bb2 0-0 12.Nbd2 b6 13.c4 Bb7 14.d4 dc4 15.Nc4 Nc4 16.Bc4 Ne4 17.Qc2 c5 18.Rfd1 cd4 19.Nd4 Qc8 20.Bd3 (20.Rac1!?=+) 20...Qc2-/+ 21.Bc2 (21.Nc2?? Bb2 22.Be4 Be4–+) 21...Rac8 22.Bd3 Rfd8 23.a5 Nc5 24.Bf1 e5 25.Nb5 Rd1 26.Rd1 ba5 27.Na7 The passed pawn on a5 will become decisive later 27...Ra8 28.Nb5 a4 29.Ba3 Bf8 30.Nd6 Rd8?? (better 30...Ne4 31.Nc4 Ba3 32.Na3 Kg7–+) 31.Bc5+- Bc6 32.Be2 Rb8 33.Rc1 (33.Bc4 Bd6 34.Bd6 Rd8+-) 33...Rb2 (33...f6 34.Kf1+-) 34.Bc4 Rd2? (34...Kg7 35.Bf1 Rb8+-) 35.Bf7 Kg7 36.Nc4 Rd8 37.Bf8 Rf8 (37...Kf7 38.Bd6 Ke6 39.Ne5+-) 38.Be6 (better 38.Ne5!? Be8 39.Ba2 h5+-) 38...Re8 39.Bg4 (39.Ne5?! Ba8+-) 39...Bd5 (39...Re7 40.Ne5 Bd5 41.f4+-) 40.Nb6 Bb3 41.Bd7 Rb8 42.Na4 Rb7 43.Nc5 Rc7 (43...Ra7+-) 44.Ne6 Be6 45.Rc7 Kf6 (45...Bd7 46.Rd7 Kh6 47.Re7+-) 46.Be6 (better 46.Rc6 Ke7 47.Be6 g5+-) 46...Ke6 47.Rh7 Kf6 48.h4 (48.h4 Kf5 49.f3+-) 1–0. BeepBeepImAJeep (2765) – Luciferthedevil (2735), lichess.org, 2020.

5.Bc3 Bd7 6.a4 Be6 7.Bc4 dc4 8.Nf3 Bg4 (8...Nf6 9.Qe2=) 9.h3 Bf5 10.g4 Be4 11.Rg1 Nf6 (11...e6 12.Ne5=) 12.Bf6 ef6 13.Nd4 Bc5 14.f3? (better is 14.Nf5 0-0 15.Nc3=) 14...Bd4–+ 15.ed4? (better is 15.Ra2 Bg6 16.ed4 Qd4 17.Qe2 Kd7 18.Qg2–+) 15...Qd4 16.c3 (16.Rf1 Qa1 17.fe4 Qa4 18.Nc3–+) 16...Qg1 17.Ke2 Qg3 (17...Bd3) 18.Qf1 (18.fe4 Qh3 19.Qg1–+) 18...Bd3 19.Ke3 0-0 (19...0-0-0 20.Qd3 cd3 21.b6 Rhe8) 20.Qh1 Rfe8 21.Kd4 Qe5# 0–1. elijah – readbob, gameknot.com, 2013.

5.Bc3 Bf5 6.d3 Nd6 7.a4 h5 8.Nf3 Nf6 9.Be2 e6 10.h3 Be7 11.Nbd2 0-0 12.0-0 Nh7 13.Nh4?? (better is 13.Be5+=) 13...Bh4–+ 14.Bh5 Qg5 15.Be2? (15.g4 Bg6 16.Nf3 Qd8 17.Bg6 fg6–+) 15...Bh3 16.Bf3 Nf5 (16...a6!? 17.ba6 Ra6 18.Kh2–+) 17.e4 de4 (better is 17...Nh6–+) 18.Ne4+= Qg6 19.Kh2 Bg2 20.Bg2 Bg5 (20...Be7 21.Qf3+=) 21.Qg4 (21.Ng5 Ng5 22.Bb7 Rab8=) 21...f6 (21...Qh6!? 22.Qh3 Bf4 23.Kh1 Nh4-/+) 22.Kg1 Kf7 23.f4 Bh4 (23...Ne3 24.Qh3 A) 24...Nc2? 25.Rac1 (worse is 25.fg5 Ng5 26.Ng5 Qg5+/-) 25...Bf4 26.Rf4+- (26.Rc2?! Ng5 27.Ng5 Qg5+/-); B) worse is 24...Ng2 25.fg5 Ng5 26.Qg2 Ne4 27.de4+/-; C) 24...Nf1 25.fg5 Ng5 26.Ng5 C1) 26...fg5? 27.Bb7 (27.Kf1?! Qf5 28.Qf5 ef5+-) 27...Rab8 28.Rf1 (28.Qf1?! Kg8 29.Qg2 Qf5=) 28...Kg8 29.Be4+-; C2) 26...Qg5 27.Kf1 Qf4 28.Ke2 Rh8=) 24.Qg6+/- Kg6 25.Rf3 (25.Nc5 Rae8 26.Bb7 Kf7+/-) 25...Rfd8 (25...Rfc8 26.Nc5 c6 27.bc6 Rc6 28.d4+=) 26.Kf1 (26.Nc5!?+=) 26...Kf7 27.Be1 (27.Rh3 Nf8=) 27...Be1 28.Re1 Nf8 29.Ng3 (29.Nc5 b6 30.Na6 Rac8+=) 29...Ng6 30.Nf5 ef5 31.Rfe3 Rd7 (better is 31...Rab8!?-/+) 32.Bb7= Rh8 33.Bc6 Rh1?? (33...Re7 34.Bd5 Kf8 35.Re7 Ne7=) 34.Ke2 (better is 34.Bh1 Rd4 35.Kg1+-) 34...Re1+= 35.Ke1 Rd8 36.Kd2 (36.Rf3 Rd4+=) 36...Rh8 (better is 36...Nf4!? 37.c3 Rh8-/+) 37.Kc3 (better is 37.Bd5!? Kf8 38.Rf3=) 37...Rh2 0–1. Fournier,Frederic (1790) – eddyhurtado, Active, 2005.

5.Nf3?? Nb2–+ (5...Nb2 6.Qc1 Nc4–+) 0–1. Valpa – Djpnola, playchess.de, 2005.

6.Na3 Nf6 =.

6.a4 a6 7.Nf3 Bg4 8.h3 Bh5 9.Na3 Qd5+=.

6.a4 Qd5 7.Nf3 Nf6 8.0-0 (8.Be5 Bg4 9.Nc3 Qc5=) 8...Bg4 9.Nc3 Qh5 10.h3 Bh3 (better 10...Bf3!? 11.Qf3 Qf3 12.gf3 e5=) 11.gh3+- Qh3 12.Nh2 h5 (12...e5!?+-) 13.Qf3 Qe6? (better 13...Qc8+-) 14.Qb7+- Rd8 15.Qc6 (better 15.Qa7!? Ne4 16.Ne4 Qe4 17.Qc7+-) 15...Qc6 16.bc6 Rd2 17.Nb5 Rc2?? (17...e6 18.Rfd1 (18.Na7?! Ne4+-) 18...Bb4 19.Bf6 gf6 20.Nf3+-) 18.Bf6 (better 18.Rfd1 Nd5 19.Rd5+-) 18...ef6 19.Nc7 Kd8 20.Nb5 Kc8? (20...Bc5 21.Rfd1 Kc8+-) 21.Na7 Kc7 (21...Kb8 22.Nb5+-) 22.Nb5 (22.Rfd1!? Bb4 23.Rd7 Kb6+-) 22...Kb6 23.c7 Bc5 24.Rfd1 Rc8 25.Rd8 (25.Rac1 Rc1 26.Rc1 g5+-) 25...Kb7 (25...Rc7 26.Rb1 c3 27.Nc3 Kc6 28.Nb5+-) 26.Rb1 Rc7 (26...c3 27.Nd6 Kc7 28.Rc8 Kd6 29.Rd1 Rd2 30.Rd8 Kc6 31.R8d2 cd2 32.Rd2 Bb4+-) 27.Nd4 Ka6 (27...Ka7 28.Nc2 g6 29.Nf3+-) 28.Ra8 (28.Ra8 Ra7 29.Ra7 (29.Nc2?! Ra8 30.Nf3 Rc8+=) 29...Ka7 30.Nc2+-) 1–0. BeepBeepImAJeep (2675) – DaniyarMedybayev (2435), lichess.org, 2020.

6.a4 Qd5 7.Nf3 Bg4 8.h3 Bh5 9.Nc3 Qd6=.

6.a4 Qd6 7.Nf3 Qg6 8.Rg1 f6 9.Na3 e5=.

6.a4 Nf6 7.Nf3 Bf5 8.0-0 e6 9.Na3 c6 (better 9...Qd5!?+=) 10.Nc4+- cb5 11.ab5 Be7 12.d4 (12.Bd4!? 0-0+-) 12...0-0+- 13.Nce5 Be4 14.c4 Rc8 (14...a6 15.Ng5+-) 15.c5 (better 15.Ra7 Bd6 16.Ng5+-) 15...Nd5? (15...Ra8 16.Nd2+-) 16.Ra7 (16.Nd2 Nf6 17.Ne4 Ne4 18.Ra7 Qd5+-) 16...Bf6 (16...f6 17.Nd2 Bg2 18.Kg2 fe5 19.Ne4+- (19.Rb7?! Ne3 20.fe3 Qd5 21.Rf3 Qb7=)) 17.Rb7 (17.Qe2!? Ra8 18.b6 Qe7+-) 17...Be5 18.Ne5 Qg5 Do you see the mate threat? 19.Qg4 (19.Nf3!? Qf5 20.Ra7 Ra8 21.Ra8 Ra8+-) 19...Qh6?? (19...Qg4 20.Ng4 Ne3 21.fe3 Bb7+-) 20.Qe4 (20.Qe4 f5 21.Qd3+-) 1–0. BeepBeepImAJeep (2720) – federovski (2720), lichess.org, 2020.

6.a4 Nf6 7.Nf3 Bg4 8.Qe2 Qd5 9.Nc3 Qc5 =.

6.a4 Nf6 7.Nf3 g6 8.Ne5 Be6 9.Na3 Bg7 10.Nec4 (10.0-0 Bd5+-) 10...0-0 (better 10...Bc4 11.Nc4 Qd5=+) 11.0-0+- c6 12.Ne5 Rc8 13.bc6 bc6 14.Nac4 Nd5 15.Rb1 Nb4 16.Ba1 Qd5? (better 16...c5 17.d3 f6+=) 17.Rb4+- c5 18.Rb5 a6?? (18...f6+-) 19.Rb6 Rb8 20.Rb8 (better 20.Nc6 Rbe8 21.Bg7 Kg7+-) 20...Rb8 21.Qf3 (better 21.d3 f6 22.Nf3 Qd7+-) 21...Qd8?? (21...Qf3 22.gf3 Rb4+-) 22.Nc6 (22.Nc6 Qe8 23.Nb8 Bc4 24.d3 Bd3 25.cd3 Qb8 26.Qc6+-) 1–0. FeegLood (2560) – Blitzstream_twitch (2375), lichess.org, 2015.

6.Nc3 Bf5 7.Qf3 Bc2 (7...Qc8 8.Qf4 Nf6 9.Rc1+=) 8.Qb7+/- Rb8 9.Qc6 Qd7 10.Qd7 Kd7 11.Nf3 f6 (11...Bd3 12.Ne5 Ke8 13.Nc6+/-) 12.Nd4 Bd3 13.Nc6 (13.a3+=) 13...Rb6 (better is 13...Ra8!?=) 14.Na7+/- White gets the initiative 14...Re6? (better is 14...e5!?+/-) 15.Na4 Ke8 (15...Rb6 16.Nc5 Kd8 17.a4+- (17.Nd3?! cd3 18.a4 Kd7+-)) 16.Rc1 Nh6 (16...Rd6 17.Nc5+-) 17.Nc5 Rd6 (17...Rb6 18.a4+-) 18.Nd3 Rd3 (18...cd3 19.Rc7 e5 20.Nc6+-) 19.Rc4 Nf5 (19...Rd7 20.a4+-) 20.Rc7 e5 (20...Nh4 21.b6 Ng2 22.Ke2+-) 21.b6 Bb4 (21...Rd8 22.Nc6 Bd6 23.Nd8 Kd8+-) 22.b7 Bd2 (22...Rd8 23.Nc8 Bd2 24.Ke2+-) 23.Ke2 Rd8 Plans Nd6 24.Rc8 Kf7 (24...Kd7 25.b8Q Rc8 26.Nc8 Rc8 27.Qb5 (27.Kd2?! Rb8 28.Kc3 Nd6+=) 27...Rc6 28.Rd1+-) 25.b8Q Rhe8 26.Rd8 Rd8 27.Qd8 Bb4 28.Qd7 Ne7 29.Nc6 Bc5 30.Nd8 Kf8 31.Qe6 Ke8 32.Rd1 Kf8 1–0. Woschkat,Karl_Heinz – Krahl,Wolfgang, CiF, 1996.

6.Nc3 Nf6 7.Qe2 Be6 8.e4 g6 9.Nf3 Bg7 10.0-0 0-0 11.h3 a6 12.Rfb1 ab5 13.Nb5 c6 14.Nbd4 Qd7 15.Bc3 b5 16.Ne5 Qd6 17.Nec6+- Nh5 18.Rb5 Nf4 19.Qe3 Bd7 20.e5 Nd5 21.Rd5! Qd5 22.Ne7 Kh8 23.Nd5 Rfe8 24.e6! Be6 25.Nc7 Bd4 26.Qd4 Kg8 27.Qg7# 1–0. pereira – Ronald, internet, 2007.

6.Nc3 Nf6 7.Nf3 a6 8.a4 A) 8...g6 9.0-0 (9.Qe2 Bg7 10.0-0 0-0 11.Qc4 Be6 12.Qd4 Bg4 13.Ba3 Re8 14.Ne5; 9.Ne5 Bg7 10.Nc4 Be6 11.d3 Nd5 12.Ne4 Bb2 13.Nb2 0-0 14.0-0) 9...Bg7 10.Qe2 0-0 11.Qc4 Be6 12.Qc5 Qd6 13.Qd6 cd6 14.Nd4; B) 8...Bf5 9.Ne5 (9.0-0 ab5 10.Nb5 c6 11.Nbd4 Bg4 12.h3 Bh5 13.d3 Qb6 14.Ba3; 9.h3 ab5 10.Nb5 c6 11.Nbd4 Bg6 12.0-0 Qc7 13.Nh4 e5 14.Ndf3) 9...ab5 10.ab5 Ra1 11.Ba1 e6 12.Nc4 Bb4 13.0-0 0-0 14.d3.

6.Nc3 Nf6 7.Nf3 e6 8.0-0 Bd6 (8...a6 9.a4 (9.Qe2 ab5 10.Nb5 c6 11.Bf6 gf6 12.Nc3 b5 13.Rfd1 f5 14.a3) 9...ab5 10.ab5 Ra1 11.Qa1 Bd6 12.Qa4 e5 13.Qc4 Be6 14.Qd3; 8...Qd6 9.Qe2 e5 10.a4 Qe6 11.e4 Bd6 12.h3 h6 13.a5 0-0 14.Ba3) 9.Qe2 (9.e4 e5 10.Qe2 Be6 11.Ng5 Qe7 12.Nd1 a6 13.b6 cb6 14.Ne3) 9...0-0 (9...e5 10.Qc4 Be6 11.Qd3 0-0 12.Ng5 Qd7 13.Ne6 Qe6 14.Ne4) 10.Qc4 a6 11.a4 ab5 (11...Bd7 12.e4 (12.h3 e5 13.e4 c6 14.bc6) 12...e5 (12...Ng4 13.h3 Ne5 14.Ne5) 13.h3+/- (13.d4 Be6 14.d5) 13...Qe7 14.d4) 12.ab5 (12.Nb5 Ra6 13.h3 Bd7 14.e4) 12...Ra1 13.Ra1 Ng4?? (better is 13...e5+/- 14.e4) 14.Qg4+- 1–0. Anonymous – heere, internet, 2011.

6.Nc3 Nf6 7.Nf3 e6 8.ba6 Ra6 9.Qe2+= g6 10.Qc4 Bg7 11.0-0 0-0 12.Nb5 Rc6 13.Qa4 Ra6 14.Qc4.

6.Nc3 Nf6 7.Nf3 e6 8.Qe2 A) 8...a6 9.a4 (9.Qc4 ab5 10.Nb5 c6 11.Nbd4 Qd5 12.Qb3 Bd6 13.0-0 0-0 14.Ne2; 9.ba6 Ra6 10.Ne5 Bd7 11.0-0 Bd6 12.Nc4 0-0 13.a4 Bb4 14.Ba3) 9...ab5 10.ab5 Ra1 11.Ba1 Qd6 12.Qc4 Bd7 13.0-0 Be7 14.Bb2; B) 8...Bd6 9.Qc4 (9.0-0 e5 10.Qc4 Be6 11.Qd3 0-0 12.Ng5 Qd7 13.a4 Bc5 14.Ne6; 9.e4 e5 10.Qc4 Bg4 11.Qd3 0-0 12.0-0 Qd7 13.h3 Bh5 14.Rfe1) 9...0-0 10.0-0 e5 11.d4 e4 12.Ne5 Be6 13.Qe2 Qe7 14.h3.

6.Qe2 Qd5 7.Nf3 Qb5 8.Bc3 Bg4 9.Na3 Qa6 10.Qc4 Bf3 (10...Qc4 11.Nc4 Bf3 12.gf3=) 11.Qa6+= ba6 12.gf3 Nf6 13.Rb1 (13.Bf6 ef6 14.Nc4 0-0-0+-) 13...e6 (13...Nd5 14.Ba1+=) 14.Nc4 (14.Bf6 gf6 15.Nc4 Rg8+-) 14…Bc5 1–0. GuestZCDR – GuestQPYZ, freechess.org, 2016.

6.Qe2 Qd5 7.Nf3 Qb5 8.Bc3 Bg4 9.a4 Qc6-/+ 10.Na3 (10.a5-/+) 10...e6 (better 10...Qa4!? 11.h3 Bh5-/+) 11.Nc4= Bf3 12.gf3 f6 (12...0-0-0 13.Bd4=) 13.0-0 (13.Na5!? Qd5 14.e4+-) 13...Nh6 (13...Qd5 14.Rfb1=) 14.Na5+= Qb6 (14...Qd5 15.Qb5 Qb5 16.ab5+=) 15.Rab1 (15.Qc4 Qa6 16.Qc7 b5 17.ab5 Qb5+-) 15...Qc5 (15...Qa6 16.Qa6 ba6 17.Rb7+-) 16.Nb7 (16.Rb5 Qe7 17.Rb7 Qd7+-) 16...Qg5 (16...Qd5 17.Rb5 Qd7 18.Rfb1+-) 17.Kh1 Nf5? (17...Qh5 18.e4+-) 18.Rg1 (better 18.f4!? Qh4 19.Qb5 Kf7 20.Qd7 Be7+-) 18...Qh5+- 19.Qb5 (19.e4 Nh4+-) 19...Kf7 20.Qd7 (20.Qc6 Be7 21.Rg4 Rhc8+-) 20...Be7 21.Qc7 (better 21.Qc6+-) 21...Qf3=+ 22.Rg2 Nh4 23.Rbg1 (23.Nd6 Kg8 24.Rbg1 Ng2 25.Rg2 Kf8=) 23...Ng2=+ 24.Rg2? (better 24.Nd6 Kf8 25.Rg2=) 24...Rab8?? (better 24...Rhb8 25.Nd6 Kg8-/+) 25.Nd6+- (25.Nd6 Kg8 26.Qb8 Bf8 27.h4+-) 1–0. DEFFM – GuestKKHV, freechess.org, 2016.

6.Qe2 Be6 7.Na3 a6 8.ba6 (worse 8.Nc4 Qd5 9.d3 Qg2-/+) 8...Ra6 9.Nc4 (9.Nf3=) 9...Bc4 (better 9...Qd5 10.d3 Qg2=+) 10.Qc4+- Rb6 (10...c6 11.Nf3+-) 11.Bd4+- Rc6 12.Qa4 e6 13.Rb1 Ne7 (better 13...Qc8+-) 14.Rb7 Qd5 (14...f6+-) 15.Rb8 Kd7 (15...Nc8 16.Rc8 Ke7 17.Nf3+-) 16.Nf3 (16.Nf3 Ng6 17.d3+-) 1–0. GuestVZTS – GuestCFKX, freechess.org, 2017.

6.Qe2 Be6 7.a4 Nf6 8.Na3 Bd5 (8...Qd6 9.Nf3 (9.Nc4? Qb4–+) 9...Qc5 10.Ne5+-) 9.f3+= c6 (9...e5 10.e4 Ba3 11.Ra3+=) 10.Nh3 (10.e4 Be6+-) 10...cb5+= 11.ab5 b6 (11...Rc8 12.e4 Be6 13.Nf4+-) 12.Nf4 (12.e4 c3 13.Bc3 Bb7+-) 12...Bb7 (12...Rc8 13.Be5+-) 13.0-0 e6 14.Qc4 (14.Nc4 Be7+-) 14...Be7 (14...Qd2 15.Qb3 Nd5 16.Nd5 Qd5 17.Nc4+=) 15.d3 0-0 16.e4 Rc8 (16...a6 17.Qc3+-) 17.Qb3 Nd7 (17...Qc7 18.Ne2+-) 18.Nc4+- Nc5 (18...Ra8 19.Nh5 Qc7 20.Ng7+-) 19.Qc3 Bf6 20.e5 (20.d4 a5 21.e5 Bg5 22.dc5 Bf4 23.Nb6 Bd2+-) 20...Bg5 21.Nh3 Bh6 (21...Bd5 22.Ra7 Be7 23.Ba3+-) 22.Ra7 Ra8 (22...Rc7 23.Nf2+- (23.Nb6 Na4 24.Qb4 Be3 25.Kh1 Nb2 26.Qb2 Bd4-/+)) 23.Ra8 Ba8 24.Ba3 Be3?? (24...Na4 25.Qb4 Nc5 26.Nf2+-) 25.Kh1 (better 25.Ne3 Re8 26.Bc5 bc5 27.Qc5+-) 25...Bd4 26.Qd2 (26.Qb4 Nd7+-) 26...Re8? (better 26...Bd5+-) 27.c3 Nb3 28.Qc2 Nc5 (28...Bc5 29.Qb3 Qd3+-) 29.cd4 Qd4 30.Nd6 (30.Nb6!? Nd7 31.Nd7 Qd7+-) 30...Rd8 31.Bb2 (31.Bc5 bc5 32.Rc1 Qe5 33.Qc5 Qc5 34.Rc5 Kf8+-) 31...Qd5 (31...Qd3 32.Qd3 Nd3 33.Bd4+-) 32.d4 Nb7 (32...Qb3 33.Qc3 (33.dc5? Qc2 34.c6 Qb2–+) 33...Qc3 34.Bc3+-) 33.Qc7 (better 33.Nf4 Rd6 34.Nd5 Rd5 35.Ra1+-) 33...f6 (33...Rf8 34.Qb6 Qb3+-) 34.Qf7 Kh8 35.Nf4 (35.Ne8 Re8 36.Qe8) 35...Qb3 (35...Nd6 36.Qe7 Nf5 37.Nd5 Ne7 38.Ne7 fe5+-) 36.Ne6 (36.Ne8 Re8 37.Qe8) 36...Rg8 37.Ba1 (37.ef6 gf6 38.Qf6 Rg7 39.Qg7) 37...Nd6+- 38.ed6 Bd5 39.Re1 (better 39.Qg8 Kg8 40.d7 Be6 41.d8Q Kf7 42.Qb6+-) 39...Qb5?? (better 39...Qb4 40.Rc1 Qa3+-) 40.h3 (better 40.d7!? Be6 41.Qe6 h5+-) 40...Qc6 (40...Qa5 41.Rc1 Be6 42.Qe6+-) 41.Qc7 (better 41.d7 Be6 42.Qe6 Qc7+-) 41...Qa4 (41...Qa8 42.Bb2 Bf3 43.d7 (43.gf3?! Qf3 44.Kg1 Qg3 45.Kf1 Qf3 46.Kg1 Qg3 47.Kf1 Qf3 48.Kg1=) 43...Bg2 44.Kh2 Bh3 45.Kh3 Qf3 46.Qg3 Qh5 47.Qh4+-) 42.Nf4 (better 42.d7 Be6 43.d8Q Rd8 44.Qd8 Bg8+-) 42...Bf3 (42...Bc6+-) 43.gf3 Qb4 (43...h6 44.d7 Qa3 45.Re8 Qf3 46.Kh2 Qf2 47.Ng2 Qf1 48.Rg8 Kg8 49.d8Q Kh7 50.Qf7 Qg2 51.Kg2 b5 52.Qdg8) 44.Re7 (44.Re7 Qa3 45.Kg2 Qa1 46.d7 Qa2 47.Re2+-) 1–0. Akrapovik (1675) – rolis892 (1670), lichess.org, 2019.

6.Qe2 Be6 7.f4 (7.Nf3 Nf6+=) 7...Nf6 (7...Qd6 8.Be5 Qd7 9.Nc3=) 8.Nf3 Ne4 9.0-0 Bg4 (9...Qd7 10.a4+=) 10.Qc4+/- (10...Nd6 11.Qb4+/-) 1–0. abhijit – heyuneverno (1605), net–chess.com, 2002.

6.Nf3 a6 7.Na3 ab5 8.Nb5 c6 9.Nbd4 (9.Nc3 Qd6=) 9...Bg4 (9...f6 10.Ne2+=) 10.h3= Bh5 11.Nf5 f6 12.0-0 (12.e4 e5=) 12...e6 (12...Qd5 13.e4 Bf3 14.Qf3 (worse is 14.ed5 Bd1 15.Rfd1 cd5-/+) 14...Qd2 15.Ne3=) 13.Ng3= Bf3 14.Qf3 Qd2 15.Rfd1?? (better is 15.Qh5 g6 16.Qg4+=) 15...Qc2-/+ 16.Bd4 Be7 (16...e5 17.Rac1 Qa4 18.Bb6-/+) 17.Qg4 Kf7 18.Rdc1 (18.Ne4 Nh6 19.Qh5 Kg8 20.Nf6 Bf6 21.Bf6 Qf5 22.Qf5 ef5+=) 18...Qd3 19.Ne4 h5 (19...Nh6 20.Qh5 Kg8 21.Nf6 Bf6 22.Bf6-/+) 20.Qf3 (20.Qf4 f5 21.Nd6 Bd6 22.Qd6 Ne7+=) 20...f5 (20...Ra5!? 21.Rc3 Rf5 22.Rd3 Rf3-/+) 21.Ng3 (21.Nc3 c5 22.Rd1 Qc2+=) 21...Nf6 (21...Ra3 22.Rd1 Qc2 23.Rab1+=) 22.Rc3 Qd2 23.Rc4 (23.Nf1 Qb2 24.Rc4 Qb5+=) 23...Ra2-/+ 24.Rd1 Qa5 25.Bf6 gf6 (25...Bf6 26.Nh5 Rd8 27.Rb1-/+) 26.Nh5 (26.Rh4 Rd2-/+) 26...Ra1 (better is 26...Qb5 27.Rcc1 Qe2 28.Qe2 Re2-/+) 27.Nf4? (27.Rcc1 Rc1 28.Rc1 Qd5+=) 27...Rd1?? (better is 27...e5–+) 28.Qd1+= e5 29.Ne2 (29.Ra4!? Qb5 30.Ra8=) 29...Rd8-/+ 30.Qb3 Qe1 31.Kh2 Kf8 (31...Qd1!? 32.Rc2 Kf8+=) 32.Rh4+= Qe2?? (better is 32...Qd1 33.Qb7 Qd7+=) 33.Rh7+- Rd5 (33...Qh5 34.Rh5 Rd5 35.Qb7 Rd1 36.Rh7 Rd2 37.Qe7 Kg8 38.Qg7) 34.Qb7 1–0. Wall,Bill – Brooke,John, Sunnyvale, CA, 1988.

6.Nf3 a6 7.a4 Bg4 8.h3 Bh5 9.Na3 Qd5 +=.

6.Nf3 a6 7.ba6 Ra6 8.Qe2 =.

6.Nf3 c5? 7.0-0 e6 (7...a6!? 8.Na3 Nf6+-) 8.Ne5 b6?? (better 8...a6 9.Qh5 Nh6+-) 9.Qf3 Qg5 (9...f6 10.Qc6 Ke7 11.Qa8 fe5 12.Qa7 Qd7 13.Qb6 Nf6+-) 10.Qf7 Kd8 11.Nc6 1–0. GuestXQVW – GuestVXtyh, freechess.org, 2019.

6.Nf3 Qd5 7.a4 g6?? 8.Bh8+- f6 (8...Bg4 9.Nc3 Qh5 10.a5+-) 9.Nc3 Qf7 10.0-0 (10.a5 h6+-) 10...Nh6 11.e4 Qg8 12.Nd5 Rb8 (12...Kd8 13.Bf6! ef6+-) 13.Bf6! ef6 (13...Bg4+-) 14.Nf6 Kf7 15.Ng8 Ng8 16.Qe2 h5 17.Qc4 Be6 18.Qc7 Ne7 19.Qb8 Kg8 20.Ng5 Bg4 21.Qe8 Kg7 (21...Kh8 22.Qf8 Ng8 23.Qf7 Nf6 24.Qf6 Kg8 25.Qg6 Kf8 26.Qf7) 22.Qf7 Kh6 23.h4 (23.Qf8 Kg5 24.f4 Kh4 25.Qe7 g5 26.Qg5) 23...Bg7 24.Qe7 b6 (24...Bd7 25.Qf7 Be6 26.Ne6 Bf6 27.Qf6 a5 28.Qg7) 25.Nf7 (25.Qf7 Be6 26.Ne6 Bf6 27.Qf6 a6 28.Qg7) 25...Kh7 26.Ng5 Kh6 27.Qf7 a6 (27...Be6 28.Ne6 Bf6 29.Qf6 a6 30.Qg7) 28.Qg8 Be6 (28...Ba1 29.Nf7) 29.Qh7 1–0. GuestQWJK – GuestMWCP, freechess.org, 2018.

6.Nf3 e5 7.Be5+- Qd5 (7...a6 8.ba6 Ra6 9.Nc3+-) 8.Nc3+- Qe5?? (better 8...Qd7+-) 9.Ne5 1–0. DEFFM – GuestMWCS, freechess.org, 2018.

6.Nf3 e6 7.Ne5 Nf6 8.0-0 Be7 9.Nc4 0-0 10.Ne5 c6 (10...a6 11.a4+=) 11.Qe2 (11.bc6!? Qc7 12.Ng4+-) 11...cb5+= 12.Qb5 a6 13.Qe2 b5 14.h4 (better 14.Nc6!? Qc7 15.Ne7 Qe7 16.a4+-) 14...Bb7= 15.h5 Nd7 16.Ng4 (16.h6!? g6 17.Nf3=) 16...f5= 17.Ne5 (17.Nh2!?=) 17...Ne5-/+ 18.Be5 Bf6 (better 18...Bg2!? 19.Kg2 Qd5 20.Qf3 Qe5-/+) 19.f4 Be5 20.fe5 Qg5 21.Rf4 Rad8 (21...Rfc8 22.Nc3=) 22.Nc3 b4? (22...Rb8 23.Rb1+=) 23.Na4 (23.Rb4 Ba8+-) 23...Bc6 (23...Qe7!?+=) 24.Nc5+- (24.Rb4 f4 25.Nc5 f3–+) 24...Bd5 (24...Bb5!? 25.Qe1 Rfe8+-) 25.d4 (better 25.Na6!? Bc6 26.Nb4+-) 25…Rc8. atif_zubair – hanzys, lichess.org, 2019.

6.Nf3 e6 7.Ne5 (7.Qe2!?+=) 7...Qd5= 8.a4 (better is 8.Qf3 f6 9.Qd5 ed5 10.Nf3=) 8...Bb4?? (better is 8...Qg2!? 9.Qf3 Qf3 10.Nf3 f6-/+) 9.Nf3 (9.Qg4 Bf8 10.e4+/- (10.Nc4?! Nh6 11.Qf4 Qg2+=)) 9...Nf6 10.0-0 e5 (10...a6!?=) 11.Be5+/- (worse is 11.Ne5 c3 12.Bc3 Bc3 13.Nc3 Qe5-/+) 11...Bg4 12.h3?? (better is 12.Bf6 gf6 13.d4+/-) 12...Bf3-/+ 13.Qf3 Qe5 14.Qb7 0-0 15.Ra2 c5 16.Qf3 c3 17.dc3 Bc3 18.Nc3 Qc3 19.Qe2 Ne4 20.Rd1? Rad8 21.Rd3 Rd3 22.cd3-/+ Qc1 23.Qf1 Qf1 24.Kf1 Nc3 25.Ra3 Nb1 26.Ra1= Nc3 27.Ra3 Rd8?? 28.Rc3+- Rc8 29.Ke2 f5 30.Rc4 h5 31.d4 Re8 32.Rc5 g6 33.Rc7 f4 34.Ra7 g5 35.b6 g4 36.hg4 hg4 37.b7 Rb8 38.Ra8 1–0. Valpa – Ralf, playchess.de, 2004.

6.Nf3 f6 7.Qe2+- Bg4 (7...a6!? 8.a4 ab5 9.ab5 Ra1 10.Ba1 Qd5+-) 8.Qc4 Bf3 9.gf3 Qd7 10.0-0 (10.Nc3 e6+-) 10...0-0-0 11.Bd4 (11.d3!?+-) 11...Kb8+= 12.d3 e5 13.Bb2 Qh3 (13...Ne7 14.a4+=) 14.Qg4+- Qh6 15.Nd2 Bd6 (15...Qg6 16.Kh1+-) 16.Nc4 Ne7 17.a4 Rhf8 18.a5 (better 18.Kh1+-) 18...f5=+ 19.Qg2 Bc5?? (19...Rf6 20.Ne5 Re6=+) 20.Be5+- Ng6 (20...Rf7 21.b6! ab6 22.ab6 Bb6 23.Rfb1+-) 21.f4 Ne5 (21...Nh4 22.Qg3 Qg6 23.Kh1 Qg3 24.fg3+-) 22.Ne5 (22.fe5?! a6+-) 22...Bd6 (22...Qe6 23.d4 Bb4+-) 23.a6 b6 (23...c6 24.bc6 Be5 25.c7 Kc7 26.Qb7 Kd6 27.fe5 Ke6 28.Qa7 Ra8 29.Qb6 Kf7+-) 24.Qb7 1–0. GuestSDVS – GuestYWMS, freechess.org, 2020.

6.Nf3 Nf6 7.Qe2 Qd5 8.Nc3 Qc5 9.a4 e6 (10.Ba3 Qb6 11.Bf8 Rf8 12.Qc4 Qd6+/-; better is 9...Bg4=). pcmvr (2450) – demerick (2270), net–chess.com, 2006.

6.Nf3 Nf6 7.Ne5 e6 (7...Qd5!?=+) 8.0-0 Qd5 9.a4 Qe5?? (better 9...a6=) 10.Be5+- Bd6 11.Bf6 gf6 12.Qg4 Ke7 (12...e5 13.Qc4 Be6 14.Qh4+-) 13.Nc3 c6 (13...a6 14.Qc4 Rg8 15.Ne4+-) 14.bc6 bc6 15.Qc4 Bd7 16.Ne4 Be5 17.Qc5 Ke8 (17...Kd8 18.d4 Bc7 19.Qh5+-) 18.d4 Bc7 19.Nf6 Kd8 20.Qh5 Ke7 21.Nd7 (21.Nd7 Kd7 22.Qf7 Kd8 23.Qf6 Kd7 24.Qg7 Kd6 25.e4+-) 1–0. DEFFM – GuestCBNL, freechess.org, 2020.

7.Qe2 Bd6 8.Qc4 (8.f4 ef4 9.ef4 Ne7 10.Nf3 0-0 11.0-0 Ng6 12.g3 Bh3) 8...Qg5 (8...Be6 9.Qd3 Qg5 10.Qe4 Nf6 11.Qb7 0-0 12.Ne4 Qg4; 8...Nf6 9.Nf3 0-0 10.0-0 a6 11.a4 Be6 12.Qd3 h6) 9.Nge2 Nf6 10.Ne4 Ne4 11.Qe4 0-0 12.0-0 Rb8.

7.Qe2 Be6 A) 8.Qf3 Rb8 (8...Bb4 9.Qg3 Nf6 10.Nf3 0-0 11.Qe5 a6 12.0-0 Qd6; 8...Qc8 9.Qg3 f6 10.Nf3 Nh6 11.e4 Kf7 12.0-0 Qd7; 8...Bc8 9.Qg3 f6 10.Qh4 Be6 11.Nf3 Ne7 12.Qe4 Bd5) 9.Qe2 Nf6 10.Nf3 Bd6 11.Ng5 Qd7 12.0-0 0-0; B) 8.h3 Qd7 (8...Bd6 9.Nf3 Nf6 10.Ng5 Qd7 11.Qf3 0-0-0 12.Rd1 h6; 8...Nf6 9.Nf3 Bd6 10.Ng5 Qd7 11.Qf3 0-0-0 12.a4 Bb4) 9.Nf3 Bd6 10.0-0 Nf6 11.Ng5 0-0 12.e4 h6; C) 8.e4 Bd6 (8...Nf6 9.Nf3 Bd6 10.Ng5 Qd7 11.0-0 0-0 12.Qe3 Bg4) 9.Nf3 Nf6 10.0-0 0-0 11.Ng5 Qe7 12.a4 Bc5; D) 8.a4 Bd6 (8...Nf6 9.Nf3 Bd6 10.Ng5 Qc8 11.Nce4 Ne4 12.Ne4 0-0; 8...h6 9.Nf3 Bd6 10.Nb1 Nf6 11.Be5 0-0 12.Nc3 c5; 8...Bb4 9.Nf3 f6 10.Rd1 Ne7 11.0-0 0-0 12.Ne4 Qd5) 9.Nf3 f6 10.0-0 Ne7 11.Ne4 0-0 12.Rfd1 Nf5; E) 8.Rd1 Bd6 (8...Nf6 9.Nf3 Bd6 10.Ng5 Qe7 11.0-0 0-0 12.Qf3 a6; 8...Qd6 9.Nf3 Nf6 10.0-0 Be7 11.Ng5 Qb4 12.Ne6 fe6) 9.Nf3 Nf6 10.Ng5 Qe7 11.Qf3 0-0-0 12.h3 h6; F) 8.f4 ef4 9.ef4 Qf6 10.Nf3 Qf4 11.Ne4 Nf6 12.Bf6 gf6; G) 8.Nf3 Bd6 9.0-0 Nf6 10.Ng5 Qd7 11.f4 ef4 12.ef4 Bc5.

7.Nf3 Bd6 8.0-0 Nf6 9.Qe2 0-0 10.Qc4 a6 11.a4 Be6 12.Qd3 h6.

7.Nf3 Bd6 8.Na4 Qe7 (8...Qf6 9.0-0 Bg4 10.Re1 0-0-0 11.Qe2 Bf3 12.Qf3 Qf3; 8...f6 9.0-0 Ne7 10.d4 cd3 11.Qd3 Be6 12.c4 b6) 9.Qe2 Nf6 10.Qc4 0-0 11.0-0 a6 12.b6 Be6.

7.Nf3 Bd6 8.d3 A) 8...cd3 9.Qd3 Nf6 10.0-0-0 0-0 (10...Bd7 11.Nd5 Be6 12.e4 Ng4) 11.Ne5 Be6 12.Nc4 Be7; B) 8...Be6 9.Ne4 cd3 10.0-0 f5 11.Neg5 Bd5 (11...Bd7 12.cd3 Qe7) 12.cd3 Nf6; C) 8...a6 9.dc4 Nf6 10.Nd5 (10.0-0 0-0 11.a4 Re8 12.Ba3 Bf5) 10...ab5 11.Be5 Be5 12.Ne5 Be6; D) 8...Nf6 9.dc4 0-0 10.0-0 a6 (10...e4 11.Ng5 Bf5 12.f3 Bc5) 11.Qd3 (11.a4 Re8 12.Ba3 Bf5) 11...Qe7 12.Ng5 g6.

7.Nf3 Bd6 8.d4 A) 8...cd3 9.Qd3 Nf6 10.0-0-0 (10.Rd1 Bg4 11.h3 Bf3 12.gf3 Qd7) 10...0-0 (10...Bd7 11.Nd5 Be6 12.e4 Ng4) 11.Ne5 Be6 12.Nc4 (12.Ne4 Ne4) 12...Be7; B) 8...ed4 9.Qd4 Nf6 10.0-0-0 (10.0-0 0-0 11.e4 Be7 12.Qc4 Be6) 10...Be6 (10...0-0 11.Ne4 Re8 12.Nd6 cd6) 11.Ng5 (11.Ne5 Bb4 12.Nc4 Qd4) 11...Qe7 (11...0-0 12.Nce4 Be7) 12.Nce4 Ne4.

7.Nf3 Bd6 8.Qe2 Nf6 (8...Be6 9.Ne4 f6 10.0-0-0 Ne7 11.d3 cd3 12.Qd3 Kf7) 9.Qc4 0-0 10.0-0 Be6 11.Qd3 Qd7 12.Ng5 a6.

7.Nf3 Bg4 8.0-0 (8.h3 Be6 9.0-0 f6 10.d4 cd3 11.cd3 a6 12.ba6 Ra6; 8.Qe2 Nf6 9.Qc4 Qd6 10.Ng5 0-0-0 11.0-0 Be6 12.Ne6 Qe6) 8...Bd6 (8...Qf6 9.Nd5 (9.Ne4 Qf5 10.Ng3 Qf6 11.Qe2 Bd6 12.Kh1 Ne7) 9...Qd6 10.e4 Nf6 11.Be5 Bf3 12.Bd6 Bd1) 9.h3 Bh5 10.Ne4 Nf6 11.Ng3 Bg6 (11...Qe7!?= 12.Nf5 Qf8; 11...Bf3 12.Qf3 Qd7) 12.Ne5+/- 0-0 (12...Be5 13.Be5 Qd7 14.Bf6 gf6 15.f4+/-) 13.Nc4 Bg3 14.fg3 Ne4 15.d3 Ng3 16.Rf2 f6 (better is 16...a6!? 17.ba6 b5+/-) 17.Qg4 Nh5 18.Raf1 (18.Qf3 a6 19.g4 ab5+-) 18...Qe8 (18...a6 19.ba6 Ra6 20.Ne5+-) 19.a4 (19.Ba3 Rf7 20.Qf3 Qb5+-) 19...Qc8 (19...a6 20.Ba3 ab5 21.ab5+- (21.Bf8?! bc4 22.Bg7 Kg7 23.Qc4 Qd7+/-)) 20.Qh4 (20.Qc8 Rac8 21.Kh2 f5+-) 20...f5 21.Ne5 (21.g4 Nf6 22.gf5 Be8+-) 21...Nf6 (21...Qe6 22.g4 fg4 23.Qg4 (worse is 23.hg4 Rf2 24.Qf2 Nf6+-; 23.Ng4?! Rf2 24.Rf2 a6+-) 23...Qg4 24.hg4 (worse is 24.Ng4 Rf2 25.Rf2 a6+-) 24...Rf2 25.Rf2+-) 22.Qc4 Kh8 23.e4! fe4 24.Ng6 hg6 25.Bf6 gf6 26.Rf6 (26.de4?! Kg7+-) 26...Rf6 27.Rf6 Qe8 28.Re6 (28.Qe4?! Qe4 29.de4 Kg7+-) 28...Qd7 (28...Qf7 29.Qd4 Qg7 30.Qe4 Rg8+-) 29.Qe4 (worse is 29.Re4 Rf8+-; 29.de4?! Kh7+-) 29...Rg8 30.Re7 Qf5 (30...Qe7 31.Qe7 Rg7 32.Qd8 Kh7+-) 31.Qd4 1–0. algernon (2195) – reyr (2180), net–chess.com, 2010.

7.a4 a6 8.Na3 ab5 (8...Nf6 9.Ne5 e6 10.Nec4+- (10.Nd7?! Qd7 11.Nc4 Qd5=)) 9.ab5 c6 (better 9...e6!?+-) 10.Nc4 (10.bc6 Bc6 11.Nc4 f6+-) 10...cb5 11.Nce5 e6? (better 11...Ra1!? 12.Qa1 f6 13.Nd7 Qd7 14.Qa8 Kf7+-) 12.Nd7+- Qd7?? (12...Ra1 13.Qa1 Kd7+-) 13.Ra8 (13.Ra8 Qd8 14.Qa1+-) 1–0. GuestTFGS – GuestQKRD, freechess.org, 2020.

7.Nc3 Qb8 8.Qe2 a6 (8...Be6 A) 9.Nd4 Qc8 (9...Bd7 10.Qc4 Nf6 11.Nf3 a6 12.a4 ab5; 9...Bc8 10.Qc4 Nf6 11.Nf3 a6 12.a4 ab5) 10.0-0 Nf6 11.f4 a6 12.a4 h5; B) 9.e4 Nf6 (9...a6 10.Ng5 Bc8 11.Nd5 Nf6 12.b6 Nd5) 10.Ng5 Qc8 11.f4 h6 12.Ne6 Qe6; C) 9.a4 a6 (9...Qd8 10.Nd4 Qd6 11.a5 a6 12.Ba3 Qd7; 9...c6 10.Nd4 Bd7 11.bc6 bc6 12.Ba3 Qc7) 10.Ng5 Qc8 11.ba6 ba6 12.e4 Rb8; D) 9.Ng5 Qc8 (9...Bd7 10.Qc4 e6 11.0-0 Nf6 12.f4 a6; 9...Bf5 10.e4 Bd7 11.Nd5 Nf6 12.Qc4 Nd5) 10.Qf3 c6 11.bc6 bc6 12.Ne6 Qe6; E) 9.0-0 Qd8 (9...Nf6 10.a4 Qd8 11.Ng5 Qd6 12.e4 Qd7; 9...Bg4 10.Nd5 c6 11.bc6 e6 12.Nf4 bc6; 9...c6 10.Nd4 Qd6 11.bc6 bc6 12.Ne4 Qe5) 10.Ng5 Qd6 11.Qf3 0-0-0 12.Nf7 Bf7) 9.a4 (9.ba6 Ra6 (9...b5 10.a4 b4 11.Ne4 Nf6 12.Nc5 Bc6) 10.Ne5 (10.Qc4 Nf6 11.0-0 b5 12.Qe2 Ra5) 10...Nf6+/- (10...Be6 11.Nc4 Qa7 12.d4 Nf6) 11.Qc4 Be6 12.Qd4 c6; 9.Ne5 Be6 (9...Nf6 10.Qc4 Be6 11.Qc5 Nd7 12.Nd7 Bd7) 10.Nc4 Nf6 11.a4 ab5 12.Nb5 Qd8) 9...ab5 10.Nb5 Bb5 11.ab5 Ra1 12.Ba1 Qa8 (12...Qa7 13.0-0 Qa4 14.Bc3 Qb5 15.Ra1+/-) 13.Bc3 Qa4 14.0-0 (14.b6 cb6 15.Ne5 f6 16.Qh5 g6 17.Ng6 hg6 18.Qh8 Qc2+-) 14...Qb5 15.Ra1 e6 16.Nd4 Qg5?? (better is 16...Qb6+/-) 17.Ra8+- Ke7 (17...Kd7 18.Rf8 Qe7+-) 18.Qc4 Kd6 (18...Kd7 19.Nf3 b5 20.Qd4 Qd5 21.Ne5 Ke7 22.Bb4 Qd6 23.Bd6 cd6 24.Nc6 Kd7 25.Qa7 Kc6 26.Rc8 Kd5 27.Qd4) 19.Nb5 Kd7 (19...Qb5 20.Rd8 Qd7 21.Bb4 Ke5 22.Qf4 Kd5 23.Rd7 Kc6 24.Qc7 Kb5 25.Qa5 Kc4 26.d3) 20.Qc7 1–0. mtr – guest, internet, 2009.

7.Nc3 c6 8.a4 cb5 9.ab5 a6 10.ba6 b5? (10...Ra6!? 11.Ra6 ba6+/-) 11.0-0 (11.Ne5!? b4 12.Qf3 Nf6+-) 11...e6 12.Qe2 Bb4?? (12...Qb6 13.d3 f6 14.dc4 bc4 15.Rfb1 Ra6 16.Ba3+-) 13.Ne4 (better is 13.Nb5!? c3 14.Bc3 Bc3 15.Nd6 Ke7 16.dc3 Nf6+-) 13...Bc6 (better is 13...f6 14.d3 cd3 15.cd3 e5+-) 14.Nc3 Bf3?? (14...Bd7 15.Nb5 c3 16.Bc3 Bc3 17.Nd6 Ke7 18.dc3 Nf6+-) 15.Qf3+- (15.gf3?! Bc3 16.Bc3 Nf6+/-) 15...Nf6 16.Qc6 Nd7 17.Nb5 0-0 18.Qc4 Bd2 (18...Bc5 19.Qg4 Nf6 20.Bf6 Qf6 21.d4+-) 19.Qd4 (better is 19.Rfd1!? Nf6 20.a7 h6+-) 19...Ba5 (19...Nf6+-) 20.Qg7 1–0. Tycho – Milosforman, playchess.de, 2004.

7.Nc3 c6 8.a4 cb5 9.ab5 Qc7 +=.

7.Nc3 c6!? 8.a4 cb5 9.ab5 Nf6 +=.

7.Nc3 c6 8.bc6 Bc6 9.Qe2 b5 (9...Qb6 10.Rb1 Qc5 11.d4 cd3 12.cd3+= (< 12.Qd3 Nf6=+)) 10.0-0 (10.a4 a6+/-) 10...Nf6 11.a4 b4 12.Nb5 Bb5 (12...a6 13.Qc4 Qc8 14.Ne5 ab5 15.Qf7 Kd8 16.Nc6 Qc6 17.ab5+/-) 13.ab5+/- Qc7 (13...Qd5!?+/-) 14.Ra6 (14.Bd4 Nd7+-) 14...c3 (14...Qc5 15.b6!+-) 15.dc3 bc3 16.Rc6 Qd8 (16...Qb7 17.Bc3 Ne4 18.Be5+-) 17.Bc3 e6? (17...Ne4+-) 18.Rd1 Qb8 19.b6! ab6 (19...Qb6 20.Rb6) 20.Qb5 Nd5 21.Rc7 Kd8 22.Qd7# 1–0. b4_player – opponent, gamecolony.com, 2007.

7.Ne5 Be6+= (7...Bb5? 8.Qh5 Nh6 9.Nf7 Nf7 10.Qb5 c6 11.Qb7+-).

7.0-0 Qd5= 8.Nc3 Qh5 9.h3 Bf3 10.Qf3 Qf3 11.gf3 0-0-0 (11...Rd8 12.Rfd1=) 12.Rfd1 e6 (12...e5 13.d3=) 13.a4 (13.d3 cd3 14.Rd3 Nh6=) 13...Bb4 (13...Ne7 14.d3=) 14.a5+= White fights for the Initiative 14...Nf6 (14...Bc3 15.Bc3 (15.dc3?! Rd5+=) 15...Rd5 16.Rdb1+=) 15.Ra4 c5 (15...Bc3!? 16.Bc3 Rd5+=) 16.bc6+/- Bc3 17.cb7 Kb7 18.Bc3 Nd5 (18...Rc8 19.a6 Ka8 20.Rb1+/-) 19.Bb2 (19.Bd4 Nf4 20.Kh2 Ne2 21.a6 Ka8+-) 19...f5? (better is 19...Rc8!?+/-) 20.Rc4+- (20.Bg7 Rhg8 21.a6 Kc6 22.Rc4 Kd6+=) 20...Rhg8 21.Rb1 Ka8 22.Be5 g5 (22...Rc8 23.Rc8 Rc8 24.d3+-) 23.d4 g4 (23...Rc8 24.Rc8 Rc8 25.c4+-) 24.fg4 fg4 25.e4 gh3 26.Kh2 (26.Kh1 Ne7 27.Rc7 Rge8+-) 26...Ne7 27.Bg3 (27.Rc7 Ng6 28.Rbb7 Ne5 29.Ra7 Kb8 30.Rcb7 Kc8 31.de5+-) 27...Rg6 (27...Rc8 28.Rc8 Rc8+-) 28.Rc7 (worse is 28.Kh3 Rh6 29.Kg2 Rh5+-) 28...Nc8 (28...Rg3 29.fg3 Nc8 30.e5+-) 29.Be5 Rdg8 (29...Rgg8 30.Rd7! Nb6 31.Rd8 Rd8 32.ab6 Kb7 33.ba7 Ka7+-) 30.Rh7 Rg2 31.Kh1 Rf2 (31...Ne7 32.Re7 Rg1 33.Rg1 Rg1 34.Kg1 a6 35.Re8 Kb7 36.Re6 h2 37.Kh2 Kc8 38.Re7 Kd8 39.Ra7 Ke8 40.d5 Kf8 41.d6 Ke8 42.d7 Ke7 43.f4 Kf7 44.d8Q Ke6 45.Qd6) 32.Rb8 1–0. b4_player – opponent, gamecolony.com, 2007.

7.0-0 Qd5 8.h3 Bf3 (8...Qb5 9.Nc3 Qb2 10.Rb1=) 9.Qf3= Qf3 10.gf3 0-0-0 11.a4 Nf6 12.Bc3 Nd5 13.Bd4 f6 14.e4 (14.Ba7 b6 15.Na3+=) 14...Nb4 15.c3 Nc2 16.Ra2 Nd4 17.cd4 Rd4 18.Nc3 (18.Rc1 f5+=) 18...e6 19.Ne2 Rd6 (19...Rd3 20.Rc1 Bb4 21.Rc4 Bd2 22.Nd4-/+) 20.a5 (better is 20.Rc1!?+=) 20...Be7 21.Rc1 Rhd8 22.Rcc2 e5 23.Nc3 Rd3 (23...c6 24.bc6 bc6 25.Nd1-/+) 24.Kg2 Bb4 25.Nd5 Bc5 (better is 25...R8d5!? 26.ed5 Rd5 27.Rc4 Rb5-/+ (worse is 27...Bd2 28.b6 ab6 29.ab6+=)) 26.Ra4 (26.Rc4 R8d5 27.ed5 Rd5=) 26...c6 (26...R8d5!? 27.ed5 Rd5 28.Rac4 Bd6+=) 27.bc6+= bc6 28.Rac4 cd5 29.Rc5 Kb8 30.ed5 (better is 30.Rb2!? Ka8 31.Rc7 de4 32.fe4+=) 30...R3d5+= 31.Rc7 (31.Rb2 Ka8 32.Rc7 g5+= (worse is 32...Rd2 33.Rbb7 a6 34.Ra7 Kb8 35.Rcb7 Kc8 36.Rg7+/-)) 31...R5d7 (31...Rd2!? 32.R2c6 R2d6–+) 32.R7c5 Kb7 33.Rb2 Ka6 34.Rcc2 g5 35.Kg3 (35.Rc6 Ka5 36.Rf6 Re7-/+) 35...f5 (35...Rd6 36.Ra2-/+) 36.h4 f4 37.Kg4 Rg7?? (better is 37...gh4 38.Rc5 Rg8 39.Kf5 Re8-/+) 38.hg5+= Rd6 (38...Rd5 39.Rc3+=) 39.Kf5 (39.Rc5 h6 40.Re5 Rg5 41.Rg5 hg5 42.Kg5 Ka5 43.Kf4 Rd8+-) 39...Re7? (39...Rdg6 40.Ke5 Rf7 41.Ke4 Rg5 42.Rc1+=) 40.Rb3 (40.Rc5 h6 41.Re5 Rf7 42.Kg4 hg5 43.Rg5 Rd4+-) 40...Ree6 (better is 40...h6!?+=) 41.Rbc3+- Kb7? (better is 41...h6 42.gh6 Rh6 43.Ke5 Rde6 44.Kf4 Rhf6 45.Kg3 Rg6 46.Kh4 Rg2+/-) 42.Rc7 Ka6 43.R7c3 (43.Rh7!? Re8+-) 43...Kb5?? (43...Kb7 44.Rc5 h6 45.Re5 Rg6 46.gh6 Rdf6 47.Ke4 Rh6+-) 44.Rb2 (44.Rc5 Kb4+-) 44...Ka6 45.Rb8 (better is 45.Rc7 h6 46.gh6 Rh6 47.Ke5 Rde6 48.Kf4 Rhf6 49.Kg4 Rg6 50.Kh3+/-) 45...Rd5?? (better is 45...h6+/-) 46.Ke6+- e4 (46...Rd2 47.Ke5 Ra2+-) 47.fe4 Rg5+- 0–1. Fournier,Frederic (1965) – socramj (1920), Active, 2005.

7.a4 a6 8.Qe2 (8.h3 Bh5=) 8...ab5 9.ab5 Ra1 10.Ba1 Qd5 (10...Qa8 11.Be5 Qa4 12.d4=) 11.Nc3 Qc5 12.0-0 e6 (12...Nf6 13.Bb2 Qb4 14.Rb1=) 13.Bb2 (better is 13.h3 Bh5 14.Bb2+=) 13...Bd6?? (better is 13...Qh5=) 14.Ne4+- Qh5 (14...Bh2 15.Kh2 Qh5 16.Kg1 Qg6+-) 15.Nd6 (15.Bg7? Bh2 16.Nh2 Be2–+; 15.Qc4 f6 16.b6 Bf3 17.Nd6 cd6 18.Qe6 Kf8+-) 15...cd6 16.Bg7 (16.Qc4?! Ne7 17.Qc7 Bf3 18.Qb8 Kd7 19.Qh8 Bg2+/-) 16...Bf3 (16...e5 17.Bh8 e4 18.Ra1 ef3 19.Qc4+-) 17.Qf3 Qf3 18.gf3 Nf6 (18...Ne7 19.Bh8 Kd7 20.d3+-) 19.Bh8 (19.Bh8 Nd5 20.Ra1+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

7.a4 Nf6 8.Qe2 =.

7.Qe2 Qd5 8.Nc3 Qf5 (8...Qc5 9.h3 Bh5 10.a4+=) 9.Nd4 (9.e4 Bf3 10.Qc4 Be4 11.Ne4 0-0-0+=) 9...Be2 10.Nf5 Bg4 11.Ng3 (11.e4 Bf5 12.ef5 0-0-0=) 11...Nf6 (11...e5 12.f3 Be6 13.Nce4=) 12.0-0 (12.Nge4=) 12...c6 (12...Rd8!? 13.h3 Bc8=) 13.bc6+= bc6 14.f3 Bd7 15.Nce2 e6 16.Rfb1 Bd6 17.e4 (17.Bf6 gf6 18.Ne4 Be5+/-) 17...Bc7 (17...e5!?=) 18.Bd4+= White fights for the Initiative 18...Bc8 (18...e5 19.Be3+=) 19.Rb4 (19.f4 Ba5 20.c3 0-0+/-) 19...h5 20.Rc4 Bd7 (20...h4 21.Nh1 Kd7 22.Ra4+=) 21.e5 Nd5 22.Ne4 f5 (22...a5!?+/-) 23.ef6+- gf6 24.Bf6 Rg8 (24...Nf6 25.Nf6 Ke7 26.Nd7 Kd7 27.Re1+-) 25.Rb1 (better is 25.N2g3 Nb6 26.Rc5 Nd5+-) 25...h4? (better is 25...Kf7 26.Bb2 Rab8+-) 26.Bh4 Rh8 (26...e5 27.Rb7 Rg6 28.Ra4+-) 27.Bg3 Bb6 (27...Bg3 28.N2g3 Nb6 29.Rcb4+-) 28.d4 Ke7 (28...Rh5 29.Bd6+-) 29.c3 (29.Bd6 Kf7+-) 29...Rag8 30.Bd6 (30.Kf2 Rh6+-) 30...Kd8 31.N2g3 (31.N2g3 Rh4 32.Be5+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

7.h3 Be6 +=.

7.h3 Bf3 8.gf3?! Qd6=.

7.h3 Bf3 8.Qf3+- Qb8!?+-.

7.h3 Bf3 8.Qf3 e6 9.Qb7 Rb8 10.Qc6 Qd7 11.Qd7 Kd7 12.a4 c6 13.Na3 cb5 14.ab5 a6 15.ba6 Bc5 16.Bg7 Ne7 17.Bh8 Rh8 18.Nc4 Rc8 19.0-0 Ba7 20.Ne5 Ke8 21.Rfc1 f6 22.Nf3 e5 23.d4 ed4 24.ed4 Nd5 25.c4 Nb4 26.Ra4 Nd3 27.Rc2 Rd8 28.Rd2 Rb8 29.Rd3 Rb1 30.Kh2 1–0. Machete99 – guest137, ICC, 2002.

7.h3 Bf3 8.Qf3+- Nf6 9.Bf6+- ef6 10.Qb7 Bd6 (10...Rb8 11.Qe4 Be7 12.Qc4+-) 11.Qc6 Qd7?? (11...Kf8+-) 12.Qa8 (12.Qa8 Qd8 13.Qa7+-) 1–0. DEFFM – herculanum, freechess.org, 2018.

7.h3 Bf5!?=.

7.h3 Bh5 8.0-0 a6 9.a4=.

7.h3 Bh5 8.0-0 Qd5 9.Nc3 Qc5 10.a4 0-0-0 (10...Nf6 11.Qe2=) 11.a5+= Nf6 1–0. DEFFM – GuestBPYN, freechess.org, 2018.

7.h3 Bh5 8.0-0 e6 9.a4 Qd5 10.g4 Bg6 11.Nc3 Qd7 (11...Qd6 12.h4 Nf6 13.h5=) 12.Ne5+= Qd6 13.Nc4 Qc5 14.Qe2 Bc2 15.Ba3 Bd3? (better 15...Qg5 16.Bf8 Kf8+-) 16.Qd3 (16.Bc5?! Be2 17.Bf8 Bf1 18.Bg7 Bc4 19.Bh8 Bd3+/-) 16...Rd8 (16...Qg5 17.Bf8 Kf8 18.Qe4+-) 17.Qd8! Kd8 18.Bc5 Bc5 19.a5 Nf6 (19...h5 20.a6 ba6 21.Ra6 hg4 22.hg4+-) 20.a6 b6 (20...ba6 21.Ra6 Ke7 22.Na4+-) 21.Ne5 Ke7 22.Nc6 Kd6 (22...Kd7 23.Na7 Bd6 24.Nc6+-) 23.d4 Bd4 (23...Ra8 24.Rfd1 Bb4 25.Nb4+-) 24.ed4 (24.Rfd1 e5 25.ed4 e4+-) 24...Nd5 (24...Ra8 25.Rac1+-) 25.Ne4 Kd7 26.Na7 Ne7 (26...f5 27.gf5 ef5 28.Ng3+-) 27.Nc6! Nc6 28.bc6 Kc6 29.a7 Ra8 30.Ng5 Kb7 31.Nf7 Ra7 32.Nd8 Kb8 33.Nc6 Kb7 34.Na7 c5 35.dc5 bc5 (35...g5 36.c6 Kc7 37.Rfd1 e5 38.Rd7 Kb8 39.c7 Kb7 40.c8Q) 36.Rfb1 Kc7 37.Ra6 c4 (37...g6 38.Rc6 Kd8 39.Rb7 c4 40.Rc8) 38.Rc6 Kd7 (38...Kd8 39.Rb7 c3 40.Rc8) 39.Rb7 Ke8 (39...Kd8 40.Rc8) 40.Rc8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.h3 Bh5 8.Qe2 Qd5 9.Nc3 Qf5+=.

7.h3 Bh5 8.g4 Bg6= 9.0-0 (9.Nc3 Qd6=) 9...Be4 (9...f6!? 10.Nd4 Qd7=+) 10.Nc3+= Bg6 11.Ne5 e6 12.Nc4 Nf6 (12...h5 13.Qf3 Rb8 14.e4=) 13.Qf3+= Bc2 (13...Nd5 14.Ne5+=) 14.Qb7 (better 14.Rfc1 Bg6 15.Qb7+/-) 14...Bd3?? (better 14...Rb8 15.Qc6 Nd7+/-) 15.Qc6+- Nd7 16.Ne5 Bf1 17.Nd7 (17.Rf1?! Rb8=; 17.Kf1?! Rb8=) 17...Qd7 (17...Bd6 18.Nb8 Kf8 19.Qa8 Bh3+-) 18.Qa8 (18.Rf1 Qc6 19.bc6 Rb8-/+; 18.Kf1 Qc6 19.bc6 Rb8-/+) 18...Ke7 (18...Qd8 19.Qc6 Qd7 20.Kf1+-) 19.Ba3 Kf6 20.Rf1 g6 (20...Ba3 21.Qh8 Kg6+-) 21.Ne4 (21.Bf8 Rf8 22.Qf8 Qd3 23.f4 h6 24.g5 hg5 25.fg5 Kg5 26.Rf7 Qf5 27.Qe7 Qf6 28.Qf6 Kh5 29.Rh7) 21...Kg7 22.Bb2 (22.Bb2 f6 23.Bf6 Kf7 24.Bh8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.c4 Nc4=+ 6.Bc4 dc4 7.Nf3 b6 (7...f6 8.Qa4=+) 8.0-0 (8.Na3 a6=) 8...Bg4=+ 9.h3 Bh5 10.Na3 e6 (10...Qd5 11.Qe2=+) 11.Nc4= Nf6 12.g4 Bg6 13.Nce5 Bd6 14.Nc6 Qc7 15.d4 Be4 (15...a6 16.dc5 bc5 17.a4=+) 16.dc5= Bc5 (16...bc5 17.Be5 Be5 18.Nfe5=) 17.g5 Bc6 18.bc6 Nh5?? (better 18...Nd5=) 19.Ne5 g6? (better 19...Bd6 20.Nc4 Bh2 21.Kg2 b5+-) 20.Qd7 Qd7 21.cd7 (21.Nd7?! Rg8 22.Nc5 bc5+-) 21...Ke7 22.Rad1 Rhd8 1–0. DEFFM – GuestTSZJ, freechess.org, 2018.

5.bc6 Qb6 6.cb7 A) 6...Bb7 7.Bd4 (7.Be5 f6 8.Bg3 e5 9.Nc3 Ne7 10.Nf3 Nf5 11.Rb1) 7...Qc7 8.Nf3 Nc6 9.Bb5 f6 10.Nc3 e5 11.Nd5; B) 6...Nb7 7.Bd4 (7.Be5 Nf6 8.Nc3 Nd6 9.Nf3 Bd7 10.Rb1 Qc5 11.Bd4) 7...Qa5 8.Nf3 Nf6 9.Nc3 Nd6 10.Rb1 Nfe4 11.Ne5; C) 6...Qb7 7.Bc3 (7.Ba3 Nc4 8.Bc4 dc4 9.Nf3 Qa6 10.Bc5 Nf6 11.Nc3) 7...Nc4 8.Nf3 Nf6 9.Bd4 Rb8 10.Bc4 dc4 11.Be5.

5.bc6 Qb6 6.Bd4 A) 6...Qc7 7.cb7 (7.Nc3 Nc6 8.Nf3 e5 9.Nb5 Qe7 10.Bb2 a6 11.c4) 7...Bb7 8.Nf3 Nc6 9.Bb5 a6 10.Ba4 Nf6 11.Be5; B) 6...Qd8 7.cb7 Bb7 8.Nc3 Nc6 9.Rb1 Rb8 10.Bb5 Nf6 11.Nf3; C) 6...Qc6 7.Nf3 (7.Nc3 Nc4 8.Nf3 f6 9.Bc4 Qc4 10.Rb1 Nh6 11.d3) 7...Nf6 8.Nc3 a6 9.Rb1 Nc4 10.Bc4 dc4 11.0-0.

5.bc6 bc6 6.Nc3 A) 6...Nf6 7.Rb1 (7.Nf3 Qd6 8.Rb1 g6 9.Bd3 e5 10.Ne5 Qe5 11.Nb5) 7...Rb8 8.Nf3 e6 9.Bd3 Bd6 10.0-0 e5 11.Be2; B) 6...Qd6 7.Nf3 (7.Rb1 Rb8 8.Nf3 Nf6 9.Be2 g5 10.Na4 Nc4 11.Bc4) 7...Nf6 8.Rb1 g6 9.Ne2 Nc4 10.Bc3 Bh6 11.d3; C) 6...Rb8 7.Rb1 (7.Ba3 Nf6 8.Nf3 g6 9.Bd3 Bg7 10.Rb1 Rb1 11.Qb1) 7...Nf6 8.Nf3 Qd6 9.Be2 g6 10.e4 Rb2 11.Rb2.

5.bc6 bc6 6.Bd3 A) 6...c5 7.Nf3 (7.Nc3 c4 8.Be2 Rb8 9.Rb1 Nf6 10.Nf3 e6 11.0-0) 7...Nf6 8.Nc3 c4 9.Be2 Rb8 10.Rb1 e6 11.0-0; B) 6...Nc4 7.Bc4 dc4 8.Nc3 Nf6 9.Nf3 Qd6 10.Qe2 Rb8 11.Rb1; C) 6...Nf6 7.Nf3 (7.Be5 Ng4 8.Nf3 Ne5 9.Ne5 g6 10.Nc3 Bg7 11.f4) 7...Nc4 8.Bc4 dc4 9.Nc3 Rb8 10.Rb1 Qd6 11.Qe2.

5.bc6 bc6 6.Be5 A) 6...Nh6 7.Nc3 (7.Nf3 f6 8.Bg3 Nf5 9.d4 h5 10.Bd3 g5 11.h3) 7...f6 8.Bg3 Nf5 9.Nf3 e5 10.Rb1 Bd6 11.Be2; B) 6...Bf5 7.Nc3 (7.Nf3 f6 8.Bg3 e5 9.Nc3 Nh6 10.Nh4 Be6 11.Rb1) 7...f6 8.Bg3 Kf7 9.Nf3 e5 10.Rb1 Nh6 11.d4; C) 6...f6 7.Bg3 (7.Bc3 Nh6 8.Nf3 e5 9.d3 Bd6 10.Nbd2 0-0 11.Be2) 7...Nh6 8.Nf3 Nf5 9.Nc3 e5 10.Rb1 Be7 11.Be2.

5.bc6 bc6 6.Nf3 A) 6...h5 7.Bd4 (7.Be5 Nh6 8.Nc3 f6 9.Bg3 g5 10.h3 Nf5 11.Bd3) 7...Nf6 8.Nc3 Rb8 9.Ba7 Rb7 10.Bd4 Bf5 11.Rb1; B) 6...Rb8 7.Be5 (7.Bd4 Nf6 8.Nc3 e6 9.Ba7 Rb7 10.Bd4 Bd6 11.Ba6) 7...Rb7 8.Nc3 Nf6 9.Bd3 e6 10.0-0 Bd6 11.Qe2; C) 6...Nf6 7.Bd4 (7.Be5 Ng4 8.Bg3 g6 9.Nc3 Bg7 10.h3 Nh6 11.Rb1) 7...e6 8.Nc3 Bd6 9.Rb1 Qc7 10.Bf6 gf6 11.Bd3.

5.bc6 Nc6 6.Na3 A) 6...Nf6 7.Nf3 (7.Nb5 e5 8.Nf3 a6 9.Nc3 Bd6 10.d3 0-0 11.Be2) 7...a6 8.c4 Bf5 9.cd5 Nd5 10.Rc1 Rc8 11.Be2; B) 6...e5 7.Nf3 (7.Bb5 Bd6 8.c4 Nf6 9.cd5 Nd5 10.Nc4 0-0 11.Bc6) 7...Qa5 8.Nb1 e4 9.Nd4 Nf6 10.Bb5 Bd7 11.Be2; C) 6...Bd7 7.Nf3 (7.Nb5 Nf6 8.Nf3 Ne4 9.Ne5 a6 10.Nd7 Qd7 11.Nd4) 7...Nf6 8.Be2 e5 9.0-0 Qa5 10.Qc1 Be7 11.Nb5.

5.bc6 Nc6 6.Bb5 Bd7 (6...a6 7.Bc6 (7.Bd3 e5 8.Nc3 Nf6 9.f3 Bd6 10.Nge2 Nb4 11.0-0) 7...bc6 8.Nf3 Nf6 9.0-0 Bg4 10.h3 Bf3 11.Qf3; 6...Nf6 7.Nf3 (7.Nc3 e5 8.Nf3 Bd6 9.Ba4 0-0 10.Nb5 e4 11.Nd6) 7...e6 8.Nc3 Bd6 9.0-0 0-0 10.Qe2 Bd7 11.h3; 6...Nh6 7.Nc3 (7.Nf3 a6 8.Bc6 bc6 9.Nc3 e6 10.0-0 Bd6 11.Nd5) 7...a6 8.Bc6 bc6 9.Nf3 Rb8 10.Rb1 Bg4 11.h3) 7.f4 (7.Nc3 a6 8.Be2 Nf6 9.Nf3 e5 10.0-0 Bd6 11.d3; 7.Nf3 a6 8.Bc6 bc6 9.Bd4 f6 10.0-0 e5 11.Bc3) 7...Nb4 (7...Qb6!? 8.Nc3 Nf6= 9.Nf3 d4 10.ed4 Nd4 11.Bd7; 7...a6 8.Bc6 bc6 9.Nc3 Rb8 10.Rb1 Nf6 11.Nf3) 8.Bd7+= Qd7 9.Nf3 Nf6 10.0-0 e6 11.a3 (11.Nc3+=) 11...Na6 (11...Nc6 12.Ne5 Qc7 13.c4+=) 12.d3 (12.Ne5 Qc7+/-) 12...Ng4 13.Qe2 Bc5 14.d4 0-0?? (better is 14...Bd6+=) 15.dc5+- Nc5 16.Rd1 (16.Bd4 Qe7+-) 16...a6 (16...Rfc8 17.Nc3+-) 17.h3 Nh6 (17...Na4 18.Bg7 (18.hg4?! Nb2 19.Rd4 b5+-) 18...Kg7 19.hg4+-) 18.Nc3 (18.c4!? Ne4+-) 18...b5 19.e4 Na4 (19...Qa7 20.Nd4 de4 21.Ne4 Na4+-) 20.Na4 ba4 21.Ne5 (21.c4!? Rab8+-) 21...Qd6 22.f5! Qc5 (22...ef5 23.Rd5 Deflection (23.ed5 Passed pawn)) 23.Kh1 (better is 23.Bd4 Qc7 24.f6+-) 23...Ra7 (23...de4 24.fe6 fe6 25.Qe4 Nf5 26.Qa4 Rfb8+-) 24.Bd4 Qc7 25.Ba7 (25.Ng4 Ng4 26.Qg4 e5+-) 25...Qe5 26.Rab1 (26.fe6 fe6 27.Qa6 Qe4+-) 26...ef5 (26...Nf5 27.Qa6 de4+-) 27.Rd5 Qc7 (27...Qe4 28.Qd2 Qh4 29.Rb8 Rb8 30.Bb8+-) 28.Bd4 Rd8 (28...Re8 29.Qa6 Qc2+-) 29.Bb6 (29.Bb6 Qb6 30.Rb6+-) 1–0. Jacewicz,Grzegorz (2125) – Heineccius,August, remoteschach.de, 2010.

5.bc6 Nc6 6.Nc3 A) 6...Nf6 7.Bd3 (7.Nh3 e5 8.Bd3 Bc5 9.f3 0-0 10.Nf2 Bd7 11.0-0) 7...e5 8.Nge2 Bc5 9.0-0 0-0 10.f4 e4 11.Bb5; B) 6...Bf5 7.Nf3 (7.g4 Bg6 8.Nf3 Nf6 9.g5 Ne4 10.Ne4 de4 11.Nd4) 7...Nf6 8.Bd3 Bd3 9.cd3 e6 10.0-0 Be7 11.Rc1; C) 6...e5 7.h3 (7.Nf3 Nf6 8.Rb1 Bd6 9.Nb5 0-0 10.Nd6 Qd6 11.Bb5) 7...Nf6 8.Nf3 Bd6 9.Nb5 0-0 10.Nd6 Qd6 11.Bb5.

5.bc6 Nc6 6.c4 A) 6...Qb6 7.Qb3 (7.Qc1 d4 8.Nf3 de3 9.fe3 Nf6 10.Be2 Bf5 11.0-0) 7...Nf6 8.Nf3 Be6 9.Na3 Rc8 10.Be2 Ne4 11.0-0; B) 6...d4 7.Nf3 (7.ed4 Nd4 8.Nf3 Nf3 9.Qf3 Nf6 10.Nc3 Qb6 11.Na4) 7...de3 8.fe3 Nf6 9.Nc3 e5 10.Qb3 Bc5 11.Qb5; C) 6...Nf6 7.Nf3 (7.Nc3 d4 8.ed4 Nd4 9.Nf3 Bf5 10.d3 e5 11.Ne5) 7...Bf5 8.cd5 Nd5 9.Nc3 Ndb4 10.Rc1 e5 11.Qa4.

5.bc6 Nc6 6.Nf3 A) 6...Nf6 7.Bd3 (7.Bb5 e6 8.Ne5 Qc7 9.Ng4 Nd7 10.f4 a6 11.Bc6) 7...g6 8.Nc3 e5 9.e4 d4 10.Nb5 a6 11.Na3; B) 6...e6 7.Nc3 (7.Bd3 Nf6 8.0-0 Bc5 9.Ba3 Ba3 10.Na3 e5 11.Be2) 7...Nf6 8.Rb1 e5 9.Bb5 Bd6 10.d4 e4 11.Ne5; C) 6...Qb6 7.Ba3 (7.Qc1 Nf6 8.Nc3 e5 9.Ba3 Qa5 10.Bf8 Kf8 11.Rb1) 7...Qa5 8.Bb2 Qb6 9.Ba3 Qa5 10.Bb2 Qb6 11.Ba3.

5.bc6 Qc7 6.Na3 A) 6...Nc6 7.Nb5 (7.Nf3 a6 8.c4 Nf6 9.Qa4 Qa5 10.Qa5 Na5 11.Rc1) 7...Qb6 8.Rb1 e5 9.f4 f6 10.Nf3 ef4 11.ef4; B) 6...Nf6 7.Nb5 (7.cb7 Bb7 8.Nf3 a6 9.Rc1 Rc8 10.c4 Qb6 11.Rb1) 7...Qc6 8.Be5 Ng4 9.Nc7 Kd8 10.Bg3 Rb8 11.Nf3; C) 6...bc6 7.Nf3 (7.Rb1 Nf6 8.Nf3 e6 9.Bd3 Bd6 10.c4 Rb8 11.Qa4) 7...Nf6 8.c4 Qb6 9.Bd4 Qb4 10.Nc2 Qa4 11.cd5.

5.bc6 Qc7 6.cb7 A) 6...Nb7 7.Nf3 (7.Nc3 Nf6 8.Nb5 Qd8 9.Nf3 a6 10.Nbd4 Qc7 11.Rb1) 7...Nd6 8.Be5 f6 9.Bb5 Bd7 10.Bd7 Qd7 11.Bd6; B) 6...Bb7 7.Nf3 (7.Na3 a6 8.Nf3 Nf6 9.Rc1 e6 10.c4 Qb6 11.Rb1) 7...Nf6 8.Be5 Qd7 9.Nc3 Nc6 10.Rb1 e6 11.Bd3; C) 6...Qb7 7.Bc3 (7.Ba3 Nf6 8.Nc3 Nc4 9.Bc4 dc4 10.Nf3 Qa6 11.Bb4) 7...Nc4 8.Nf3 Bd7 9.Bd4 Nb2 10.Bb2 Qb2 11.Nc3.

5.bc6 Qc7 6.Nc3 A) 6...Nc4 7.Nd5 (7.Bc4 dc4 8.Nf3 Qc6 9.h3 Nf6 10.0-0 Qc5 11.d4) 7...Qc6 8.Qh5 Be6 9.Bc4 Qc4 10.Nf4 Bd7 11.Qe5; B) 6...bc6 7.Nf3 (7.Rb1 Rb8 8.Nf3 Nf6 9.Na4 e6 10.Be5 Bd6 11.Bd6) 7...Nf6 8.Be2 e6 9.Qc1 Rb8 10.Ba3 Bd6 11.Bd6.

5.bc6 Qc7 6.Nf3 A) 6...bc6 7.Be5 (7.Bd3 Bg4 8.Be5 Qe5 9.Ne5 Bd1 10.Kd1 f6 11.Nf3) 7...Qd7 8.Nc3 f6 9.Bg3 Nh6 10.Rb1 e5 11.e4; B) 6...Bg4 7.cb7 (7.Be5 Qc6 8.h3 Bd7 9.Nc3 Nc4 10.Rb1 f6 11.Bg3) 7...Qb7 8.Bc3 Nc4 9.h3 Bd7 10.Bc4 dc4 11.Bd4; C) 6...Nc6 7.c4 (7.Nc3 Nf6 8.Nb5 Qb6 9.Rb1 Ne4 10.Bd3 Qa5 11.0-0) 7...Qb6 8.Qb3 Nf6 9.Bf6 Qb3 10.ab3 ef6 11.cd5.

5.bc6 Nf6 6.cb7 A) 6...Nb7 7.Bd4 (7.Be5 Nd6 8.Nc3 Nfe4 9.Bd3 Nc3 10.Bc3 Ne4 11.Ne2) 7...Nd6 8.Nf3 Rb8 9.Nc3 Nde4 10.Ne5 Nc3 11.Bc3; B) 6...Bb7 7.Nf3 (7.Na3 Ne4 8.Rb1 Bc6 9.Nf3 Rb8 10.d3 Nf6 11.Be5) 7...Nc4 8.Bc4 dc4 9.0-0 e6 10.Bd4 Rc8 11.Nc3.

5.bc6 Nf6 6.Bd3 A) 6...bc6 7.Nf3 (7.Ne2 Qd6 8.Ba3 Qd8 9.Nbc3 e5 10.Bf8 Kf8 11.Ng3) 7...e6 8.Be5 Ng4 9.0-0 f6 10.Bc3 Bd6 11.h3; B) 6...Nc4 7.Bc4 (7.cb7 Bb7 8.Bc4 dc4 9.Nf3 e6 10.Nc3 Rb8 11.Rb1) 7...dc4 8.cb7 Bb7 9.Nf3 e6 10.Nc3 Rb8 11.Rb1; C) 6...Nc6 7.Nf3 (7.Nc3 e5 8.Nge2 Bc5 9.0-0 0-0 10.Ng3 Nb4 11.Be2) 7...g6 8.0-0 Bg7 9.Nc3 0-0 10.Nb5 Bd7 11.Qe2.

5.bc6 Nf6 6.Nf3 A) 6...bc6 7.Be5 (7.Bd3 Rb8 8.Be5 Rb4 9.Nc3 Nc4 10.Bc4 dc4 11.0-0) 7...e6 8.Nc3 Bd6 9.Rb1 0-0 10.Bd3 Nb7 11.0-0; B) 6...e6 7.cb7 (7.Nc3 Nc6 8.h3 e5 9.Be2 e4 10.Nh2 Be7 11.Ng4) 7...Bb7 8.Nc3 a6 9.Bd3 Bd6 10.0-0 0-0 11.Nd4; C) 6...Nc6 7.Bd3 (7.Bb5 e6 8.0-0 Bd6 9.Nc3 0-0 10.Bd3 a6 11.Qe2) 7...g6 8.0-0 Bg7 9.Nc3 0-0 10.Qe2 e5 11.e4.

5.bc6 Nf6 6.Bf6 A) 6...gf6 7.cb7 (7.Nc3 Nc6 8.Nf3 e5 9.Bb5 Rg8 10.g3 Bh3 11.Qe2) 7...Bb7 8.Nc3 Rb8 9.Nf3 Nc4 10.Rb1 e6 11.Nd4; B) 6...ef6 7.cb7 (7.Nc3 bc6 8.Nf3 Bd6 9.Rb1 0-0 10.Bd3 Bd7 11.0-0) 7...Bb7 8.Bb5 Nc6 9.Nc3 Bc5 10.Qh5 a6 11.Bd3.

5.Be2 d4 6.ed4 cd4 7.Nf3 e6 8.Nd4 Bc5 9.Ne6 Be6 10.Bg7 Bd4 11.Bh8 Bh8 12.c3 b6 13.0-0 Nb7 14.Bf3 Bd5 15.Re1 Kf8 16.d4 Qf6 17.Bd5 Ne7 18.Bb7 Rd8 19.Qa4 Qf4 20.Qa7 Qd2 21.Nd2 1–0. Machete99 – kamouraska, ICC, 2002.

5.Be2 e6 6.Nf3 Nf6 7.0-0 Bd6 8.Ng5 (8.Ne5 0-0=) 8...Qd7 (8...0-0 9.f4=) 9.Bf6 (9.Bc3 Qc7 10.f4 Bd7=) 9...gf6 10.Nf3 Rg8 (10...e5 11.Nc3 e4 12.Ne1=) 11.Nc3 f5 12.d4 cd4 (12...Qc7 13.Qd2=) 13.Qd4 (worse is 13.Nd4 Qc7 14.Qd2 Bh2 15.Kh1 Be5-/+; 13.ed4?! Qc7 14.Nb1 Nc4=) 13...Rg4 (better is 13...Qc7!?=) 14.Qh8+/- Bf8? (better is 14...Ke7+/-) 15.Ne5+- (15.Ne5 Qe7 16.Bg4 (16.Ng4?! fg4 17.Qh7 Bd7+-) 16...fg4 17.Ng4+-; 15.Qh7?! Qc7 16.Qh8 Rg7=) 1–0. Wall,Bill – Cowboynjns, internet, 1998.

5.Nf3 e6 6.c4 dc4 (6...Nc4 7.Bc4 dc4 8.Na3+=) 7.Na3+/- Bd7 (7...Nf6 8.Qa4 a6 9.b6 Nc6 10.Nc4+=) 8.Nc4 (8.Ne5!?+/-) 8...Bb5+= 9.Nd6 Bd6 (9...Qd6!? 10.Bb5 Nc6+=) 10.Bg7+/- (10.Bb5?! Kf8=) 10...Bf1 11.Kf1 Qc7 12.g3 0-0-0 13.Bh8 f6 14.Kg2 (14.Qa4 Nc6 15.Qh4 Qf7+=) 14...h5? (14...Qf7 15.Qc2 Nc6=) 15.Qc2 Qf7 16.Qc3 (16.Rab1 b6 17.Qc3 e5+=) 16...Nc6+/- 17.Rab1 (17.Rhb1 Rf8 18.Qb3 b6=) 17...Rf8 18.Qd3 (18.Qb2!?+/-) 18...Bc7= 19.Qb3 Bb6 20.d4 (20.d4 cd4 21.Nd4 Nd4 22.ed4=). DEFFM – GuestGHSK, freechess.org, 2021.

5.Nf3 f6 6.d3 e5 7.Nbd2 Bd6 8.Be2 g5 (8...Ne7 9.c4=) 9.0-0+= Bd7 10.c4 d4 11.ed4 cd4 12.Ne4 Qe7 13.Nd6 Qd6 14.a4 Ne7 15.Ba3 Qe6 (15...Qc7 16.Nd2 Qd8 17.Bh5 Kf8 18.Qf3+/-) 16.Re1 (16.Nd4 Qb6 17.Nc2 Nf5+-) 16...Nf5 17.Bb4 b6 (17...Qb6 18.Nd2 Kf7 19.Bf3+/-) 18.Ba5 (18.g4 Ne7 19.Nd4 Qf7+-) 18...ba5 19.Qd2 (19.g4!? Ne7 20.Nd4+/-) 19...Qb6+/- 20.Rac1 h6 (20...g4 21.Ne5 fe5 22.Bg4+/-) 21.c5 Qd8 22.Qb2 Be6 23.Bd1 Qd5? 24.Nd2 Nh4 25.f3 g4? 26.Bb3 Qd7 27.Be6 Qe6 28.Qd4!! Rg8 29.f4 Rd8 30.Qe3 Qd5 31.fe5 Qg2 0–1. Fournier,Frederic (1875) – Hedouard,Dorothee, Partie Libre, 2003.

5.f4 Nf6 6.Nf3 Bg4 (6...Bf5 7.Be2=) 7.Be2 (7.h3 Bd7=) 7...Nc4 (7...e6 8.0-0=) 8.Bc4+= dc4 9.0-0 (9.Qe2 Nd5+=) 9...h6 (9...a6 10.a4=) 10.a4 (10.Qe2 Qd5+/-) 10...g6 (10...Qd5 11.h3 Bf3 12.Rf3= (< 12.gf3 Qe6=+)) 11.Na3 Ne4?? (better is 11...c3 12.Bc3 Bg7+/-) 12.Bh8+- f6 13.Nc4 g5 14.d3 Nc3 15.Qd2 Nd5 16.fg5 hg5 17.Qf2 Bh6 18.e4 Nf4 19.Qc5 Qd7 20.b6 Ng2 21.Bf6 ef6 22.Nd6 Kd8 23.Ne5! fe5 24.Rf7 Rc8 25.Rd7 Kd7 26.Qc8 Kd6 27.Qc7+- Ke6 28.ba7 Ne3 29.a8Q (29...Nc2 30.Qe8 Kf6 31.Qce5#) 1–0. orane – lekarka, caissa.com, 2007.

5.a4 cb5 6.ab5 a6 (6...Nf6 7.Nf3=) 7.Nf3+= Nc4 (7...Nf6 8.Bd4=) 8.Bc4 dc4 9.ba6 (9.Qe2 Qd5 10.Nc3 Qf5+/-) 9...ba6 (9...Ra6 10.Ra6 ba6 11.Qe2+=) 10.Qe2 (10.Na3 Be6+=) 10...Qc7 (10...Qb6 11.Bd4 Qc6 12.Na3+/-) 11.0-0 (11.Na3 Be6+/-) 11...Bg4+= 12.h3 Bf5 (12...Bh5 13.Na3+=) 13.d3 (13.Be5 Qb7 14.Nd4+/-) 13...c3 14.Nc3 Nf6 15.Na4 g6 16.c4 Bg7 17.Rac1 0-0+/- 18.c5 Rfd8 19.d4 Nd5 20.Rfd1 Rab8 21.Qa6 Nb4 22.Qe2+- Bd3? 23.Rd3 Nd3 24.Qd3 Qa5 25.Nb6 Qb4 26.Bc3 Qa3 27.Ra1 Qb3 28.Nd2 Qe6 29.Qc4 Qc6 30.d5 Qb7 31.Bg7 Kg7 32.e4 f5 33.f3 fe4 34.fe4 e6 35.d6 Rd6 36.cd6 A deflection. 36...Qb6 37.Kh2 Qd6 38.g3 Qd2=+ 39.Kg1?? Qe3–+ 40.Kg2 Rb2 41.Kf1 Qf2# 0–1. Moxie – goulot, Live Game Caissa's Web, 2005.

5.a4 Qb6 6.Nf3 (6.Bc3 Nc4=) 6...c5 (6...Nf6 7.Be2=) 7.c4 (7.Bd3 Nf6+=) 7...Nc4= 8.Bc4 dc4 9.Qc2 (9.Ne5 Be6 10.Na3 Bd5=) 9...Nf6 (9...a6 10.Na3=) 10.Qc4 (10.Na3 Nd5=) 10...Be6 11.Qc2 (11.a5 Qd6 12.Qe2=) 11...0-0-0 (11...Bd5!?=) 12.0-0 (12.d4 Nd7+-) 12...Bd5+= 13.Nd4 (better 13.d4!? Bf3 14.Qf5 Qe6 15.Qf3+-) 13...e5=+ 14.a5 Qc7 (14...Qd6 15.Nf3 Bf3 16.Qf5 Qe6 17.Qf3=) 15.Qf5 (15.b6 ab6 16.Nb5 Qd7 17.Na7 Kb8 18.Be5 Bd6 19.Bd6 Qd6 20.ab6 Be4+-) 15...Kb8 (15...Qd7!? 16.Qd7 Kd7-/+) 16.Nf3= Bf3 (better 16...e4!? 17.Bf6 gf6=) 17.Be5+- (17.Qf3 e4 18.Qh3 Qd7 19.Bf6 gf6 20.Qd7 Rd7+=) 17...Bd6 18.Bd6 Qd6 19.Qf3 (19.gf3?! Rhe8+=) 19...g5 (better 19...Rhe8!?+-) 20.a6+- Rd7 (20...Nd5 21.ab7 Qf6 22.Qg3 Kb7 23.Nc3+-) 21.ab7 g4 (21...Rb7 22.Na3 g4+-) 22.Qc6 (22.Qf5 Rb7 23.Na3 Rd8+-) 22...h5? (better 22...Qc6!? 23.bc6 Rc7+-) 23.Nc3 (23.Rc1 Qc6 24.bc6 Rc7 25.Rc5 Nd7+-) 23...h4 (23...Rhd8 24.Ra6+-) 24.Ra7! Ka7?? (24...Ka7 25.Ra1) 25.Ra1 Kb8 26.Ra8 1–0. DEFFM – GuestFBHF, freechess.org, 2016.

5.a4 Nc4 6.Bc4 dc4 7.Qe2 Qd5 8.Nf3 Bg4 9.Nc3 Bf3? (9...Qe6 10.bc6 Qc6 11.Ne5 Be2 12.Nc6 bc6 13.Ne2+=) 10.gf3?? (better 10.Nd5 Be2 11.Nc7 Kd7 12.Na8+-) 10...Qc5 (10...Qe6 11.e4=) 11.Rg1 (11.Ba3 Qf5+-) 11...Qh5 (11...Nf6!?=) 12.Qc4+- Qh2 13.0-0-0 (13.Ne2 Nf6+-) 13...Qd6 (13...Nf6 14.Ne4 Rc8 15.Rh1+=) 14.bc6 (14.Ne4 Qd5 15.Qd5 cd5+=) 14...bc6 15.Ne4 Qd5 16.Qa6 Qa2?? (better 16...Nf6=) 17.c3 (17.Qc6 Kd8 18.Qa8 Kd7 19.Nc5 Kd6 20.Qd8 Kc6 21.Qc8 Kb6 22.Nd7 Ka5 23.Bc3 Ka4 24.Qa6) 17...Nf6?? (better 17...Rb8 18.Qc6 Kd8–+) 18.Qc6+- (18.Qc6 Kd8 19.Qa8 Kc7 20.Qa7 Kc8 21.Rg5+-) 1–0. Akrapovik – interraciallove (1605), lichess.org, 2020.

5.a4 Qc7 6.Na3 e5 7.c4 Ba3 8.Ba3 (8.Ra3 Nc4 (worse 8...dc4 9.Qh5+=) 9.Bc4 dc4=) 8...dc4 (8...Nc4 9.Bb4-/+) 9.Nf3 Be6 (9...Bg4 10.bc6 b6 11.Bb2=+) 10.Be2 (10.bc6 b6=+) 10...0-0-0 (10...Nb3!? 11.Ra2 cb5 12.ab5 e4-/+) 11.bc6 bc6 (11...Qc6!? 12.Rc1 Qc7=+) 12.Rc1 Nf6 13.Bb2 Ne4? (better 13...e4!? 14.Nd4 Bd5+=) 14.Be5+- Qd7 15.Rb1 (15.Bg7?! Rhg8 16.Qc2 Rg7 17.Qe4 Bd5+-) 15...Nd2?? (better 15...Qd5 16.Qc2 Nb3+-) 16.Rb8 1–0. GuestMMFQ – GuestJRMG, freechess.org, 2017.

5.a4 Qd6 6.Nf3 Bf5 7.Be2 Be4 (7...Nc4 8.Bc3+=) 8.0-0 (8.d3 Bf3 9.Bf3 e5+=) 8...Bf3 9.Bf3 Nc4 10.Bc3 Nf6 11.d3 Ne5 12.Be2 h5 13.f4 Neg4 14.Qc1 g5? (better 14...cb5!? 15.ab5 Qb6+=) 15.h3+- Nh6? (better 15...gf4 16.hg4 hg4 17.ef4 cb5+-) 16.fg5 Nhg4 (16...Qg3 17.gh6 Rg8+-) 17.hg4 hg4 18.Rf4 (18.Bf6?! Qh2 19.Kf2 ef6 20.bc6 bc6+-) 18...Nh5 (18...c5 19.gf6 (19.Bf6?! ef6 20.Qb2 fg5+-) 19...Bh6 20.Rg4+-) 19.Bh8 Nf4 20.ef4 0-0-0 (20...Qe6 21.Qd2+-) 21.Bg4 e6 22.Be5 Qb4 (22...Qd7 23.Bh5+-) 23.bc6 (23.Qd2 Qc5 24.Qf2 d4+-) 23...Bc5 24.Kf1 bc6 25.Nd2 f6 (25...Bd6 26.Nf3 Qb8+-) 26.Be6 Kb7 27.Rb1 (27.Rb1 fe5 28.Rb4 Bb4 29.Qb2+-) 1–0. GuestVZXZ – GuestLYCX, freechess.org, 2018.

5.a4 Bd7 6.Na3 a6 (6...Nf6 7.Nf3=) 7.Nf3 cb5 Black is in command 8.ab5 e6 9.c4 (9.Be2 Nf6+=) 9...Nc4 10.Nc4 dc4 11.ba6 ba6 12.Ne5 (12.Bc4 a5+=) 12...Qe7 (better is 12...Rb8!? 13.Nc4 Bb5=) 13.Qf3 Rb8 14.Ba3 Qf6 15.Bf8 (better is 15.Qf6 Nf6 16.Bf8 (16.Bc4 Ba3 17.Nf7 Kf7–+) 16...Rf8 17.Bc4=) 15...Qe5–+ 16.Ra5?? (16.Bg7 Qg7 17.Rc1–+) 16...Qa5 17.Bg7 Rb1 18.Ke2 Ne7 19.Bh8=+ Qa4 20.Qa8? Nc8–+ 21.f4 Qd1 22.Kf2 Qd2 23.Kf3 Qd1 24.Kf2? Rb2?? 25.Bb2+- Qd2 26.Kf3 Qb2 27.Bc4 Qc3 28.Qa6 Ke7 29.Rd1 Qb4 30.Bd3 h6 31.Rb1 Qc5 32.Qc4 Qd6 33.Rb7 Kd8 34.Kf2 Nb6 35.Qd4 Qd4 36.ed4 Nd5 37.Kf3 Ne7 38.Bb5 Nc6 39.Ke3 Kc8 40.Bc6 Bc6 41.Rf7 (41...Bg2 42.Rh7+-) 1–0. Nebe,Lutz – Rahim,J, Clubmeisterschaft, 1989.

5.a4 Bd7 6.Nf3 Nc4 7.Ba3 (better 7.Bc4!? dc4 8.Ne5+=) 7...Na3 8.Na3 a6 9.c4 Qc7 (9...ab5 10.cb5 c5 11.Be2=+) 10.cd5 cd5 11.Rc1 Qd6 12.Qb3 e5 13.Nc2 Nf6 14.Be2 Be7 15.Qb2 (15.d4 e4 16.Ne5 0-0=) 15...e4 16.Ne5 0-0 17.Nd7 Qd7 18.Nd4 h6 19.0-0 Bd6 20.h3 Bb8 21.ba6 ba6 22.Rc6 Be5 23.Rfc1 a5 24.Bb5 Qe7 25.R6c5 Rfb8 26.Qc3 Qb7? (better 26...Qd8=) 27.Bc6+- Qb4 28.Qb4 (28.Ba8!? Ra8 29.Rc8 Rc8 30.Qc8 Qf8+-) 28...ab4 (28...Rb4?? 29.Ba8 Bd4 30.ed4 Rd4 31.Ra5 Rd2 32.Kf1+-) 29.Ba8 Bd4?? (29...Ra8 30.Rc8 Rc8 31.Rc8 Kh7+-) 30.ed4 (better 30.Rc8 Rc8 31.Rc8 Kh7 32.ed4 b3+-) 30...Ra8 31.Rc8 Rc8 32.Rc8 Kh7 33.Rb8 Nd7 (33...b3 34.a5 Ne8 35.Re8+-) 34.Rb4 1–0. GuestRRKZ – GuestBCQC, freechess.org, 2017.

5.a4 Bd7 6.Nf3 Nf6 7.Na3 cb5 8.ab5 a6 9.c4 (9.Bd3 e6+=) 9...ab5 (9...dc4 10.Nc4 Nc4 11.Bc4 ab5 12.Ra8 Qa8 13.Be2=) 10.cb5 (10.cd5 b4 11.Bf6 ef6+=) 10...Qb6 (10...Bg4 11.Bf6 gf6 12.Nc2=) 11.Nd4 (11.Bd4!? Qd6 12.b6+-) 11...e6 12.Nac2 Nc4?? (better 12...Bc5=) 13.Ra8+- Ke7 (13...Bc8 14.Bc4 Qd8+-) 14.Ba3 (better 14.Bc4 Ne4 15.Bd3+-) 14...Na3 15.Ra3 1–0. Akrapovik (1630) – Evann_pro, lichess.org, 2019.

5.a4 e5 6.Be5+/- Be6 7.Nf3 Ne7 8.Na3 (8.Be2 Ng6 9.Bc3 f6+/-) 8...f6 9.Bb2 b6 (9...Nf5!?+/-) 10.Nd4 Bf7 11.c3 (11.Bc3 c5 12.Ba5 cd4+/-) 11...c5 12.Nb3 Nb7 13.c4 Nf5 14.d4 (better is 14.Be2!?+/-) 14...cd4= 15.Nd4 (15.ed4 Ba3 16.Ra3 dc4 17.Qe2 Qe7=) 15...Nd4 (15...Bb4 16.Ke2 Nd4 17.Qd4 dc4 18.Qe4 Kf8 19.Rd1= (19.Qb7?? Bh5 20.g4 Bg4 21.Qf3 Qd3; 19.Nc4? Nc5 20.Qf4 Nd3–+)) 16.Qd4+= Bc5 17.Qc3 (17.Qh4 Bb4 18.Ke2 dc4 19.Nc4 Qd5-/+) 17...Rc8 (17...Qe7!? 18.Nc2 d4=) 18.cd5+= Bd5 19.Bc4?? (better is 19.Rd1+=) 19...Qd6 (19...Ba3!? 20.Qa3 Rc4 21.0-0–+) 20.0-0 (better is 20.Nc2 Bg2 21.Rd1-/+) 20...Bg2?? (better is 20...Ba3 21.Ba3 Qd7–+ (21...Rc4?! 22.Qc4 Bc4 23.Bd6 Bf1 24.Bb8-/+)) 21.Kg2+- Na5?! 22.Rfd1 Qc7 23.Be6 Qb7 24.Kg1 Rc7 25.Qd3 Qb8 26.Qe4 Re7 27.Nc4 Nc4 28.Qc4 h5 29.Qe4 Rh6 30.Qc6 Kf8 31.Qc8 Qc8 32.Bc8 Rg6 33.Kh1 Rg5 34.Rd8 Kf7 35.Rg1 (35.Rg1 Rg1 36.Kg1+-; 35.h4!? Rg6 36.Bf5 Rh6+-) 1–0. Nielsen,Joergen Axel – Hansen,Birger, Denmark, 1969.

5.a4 e5 6.Be5 f6 7.Bb2 Bd7 8.Bd3 Bd6 9.Qh5 g6? (better 9...Ke7!?+/-) 10.Bg6!+- Ke7 (10...hg6 11.Qh8 Pinning (11.Qh8 Deflection)) 11.Nf3 h6 (11...Qf8 12.Bd3+- (12.Bh7?! Qg7 13.Ng5 Bf5=)) 12.0-0 Qf8 (12...Nc4 13.bc6 bc6 14.Bc3+-) 13.Bc3 Nc4 14.a5 (14.d3 Ne5 15.Ne5 fe5 16.Be5 Nf6 17.Bd6 Kd6+-) 14...cb5 15.a6 b6 16.Qd5 Be6 (16...Rc8+-) 17.Qb7 Bd7 18.Qe4 (better 18.Bf5 Rd8 19.Nh4 Kf7 20.Bd7 Bh2 21.Kh1 Bc7+-) 18...Be6 (18...Ne5 19.Be5 fe5 20.Ne5 Be6 21.Nc6 Kf6+-) 19.Nd4 Qc8 20.Bf5 Be5 (20...Qe8 21.Ne6 Qb8 22.Nc7 Kf8 23.Na8 Bh2 24.Kh1+-) 21.Be6 Bd4 (21...Qe8 22.Bc4 bc4+-) 22.Bc8 (22.Bc8 Be5 23.Qb7 Kf8 24.Be6+-) 1-0. DEFFM – GuestDMYH, freechess.org, 2021.

5.a4 e6 6.Nf3 Bd6?? 7.Be2 (better is 7.Bg7 e5 8.Bh8+-) 7...Nf6= 8.d3 Bd7 9.bc6 Nc6 10.0-0 0-0 11.Nbd2 Rc8 12.e4 de4 13.Ne4 Ne4 14.de4 Bf4 (14...Qc7 15.Qd3 Rfd8 16.Rad1+=) 15.g3 Bh6 16.Bd3 Nb4 17.Rc1?? (better is 17.Ba3 a5 18.Ne5=) 17...Nd3 (better is 17...Bc1!? 18.Bc1 Ba4 19.Qe2 Bc2 20.Bc2 Rc2 21.Qb5–+) 18.cd3 Qa5?? (better is 18...Bc1 19.Bc1 Qa5–+) 19.Rc8 Rc8 20.Ne5 (20.Qb3!?+=) 20...Ba4-/+ (20...Qa4?! 21.Qh5 Rf8 22.f4=) 21.Qf3 Be8 22.Ra1 (22.Bd4 Rd8 23.Bb2 f6-/+) 22...Qb6 (better is 22...Qd2 23.Nc4 Rc4 24.dc4 Qb2 25.Ra7 Qc1 26.Kg2 Qc4 27.Rb7 Qc8–+) 23.Ba3?? (better is 23.Qe2-/+) 23...Qd4–+ 24.Ng4 0–1. Fournier,Frederic – ATTIMI, KasparovChess.com rated blitz game, 2002.

5.a4 e6 6.Nf3 Nf6 7.Be2 Bd6 8.0-0 0-0 9.Na3 a6 10.c4 cb5 11.ab5 Ne4 (11...b6 12.d3=) 12.d4 (12.Qc2 Nc5+=) 12...dc4 (12...b6 13.Qc2=) 13.Nc4+= Nc4 14.Bc4 Bd7 (14...Nf6 15.Qc2+=) 15.Bd3 f5 16.Qb3 (16.ba6 ba6 17.Ba6 Qb8+/-) 16...g5 (16...ab5 17.Ra8 Qa8 18.Ra1+=) 17.d5 (17.Ba3 Qe7+/-) 17...e5 (17...Qe7 18.ba6 ba6 A) worse 19.Ra6 Ra6 20.Ba6 Nc5=+; B) worse 19.Ba6 Nc5 20.Qc4 Rfb8=+ (worse 20...Ra6 21.Ra6 Na6 22.Qa6+=); C) 19.Rfd1+=) 18.Be4 (18.ba6 Nc5 19.Qc3 Nd3 20.Qd3 ba6 21.Ra6 Ra6 22.Qa6 Qe7+/-) 18...fe4+= 19.Ne5 Bb5 20.Rfc1 1-0. Nf3 (1900) – TATEK, Rated Classical game, lichess.org, 2013.

5.a4 e6 6.Nf3 Nf6 7.Be2 Be7 8.0-0 0-0 9.d4 Ne4 (9...Bd7 10.Ne5=) 10.Nbd2 Nd2 (10...Nd6 11.Bc3=) 11.Qd2+= cb5 12.ab5 b6 13.Bc3 Nb7 (13...Nc4 14.Bc4 dc4 15.Qe2+=) 14.Ne5 (14.Bd3 Nd6+-) 14...Bd7 (14...Qc7 15.Bd3+=) 15.Bd3 Nd6 16.Bb4 Nb5? (better 16...Be8+=) 17.Nd7+- Qd7 18.Be7 Qe7 19.Bb5 Qg5 (19...Rfc8 20.Rfc1+-) 20.Bd3 (20.Ra6 Rfc8+-) 20...f5 (20...Rfc8 21.Ra6+-) 21.f4 (21.c4 f4+-) 21...Qf6 (21...Qe7 22.c4+-) 22.Ra6 Rfc8 (22...Qe7 23.c4+-) 23.Qb4 Rc7 (23...Qf7 24.Rfa1+-) 24.Rfa1 Qf7 (24...Qd8 25.Qa4+-) 25.Qb6! Rac8 (25...ab6 26.Ra8 Decoy) 26.Ra7 (26.Qe6 g6+-) 26...Ra7 (26...Qe7 27.c4!+-) 27.Ra7 Qe8 (27...Qg6 28.Re7 Ra8 29.Qe6 Kf8 30.Qe5+-) 28.Qb7 h6 (28...Qf8 29.Qd7 Re8+-) 29.Qg7 1–0. DEFFM – GuesFLHD, freechess.org, 2018.

5.a4 Bf5 6.Nf3 Bg4 7.d3 Bf3 8.Qf3 e6 9.Nd2 Bd6?? (better is 9...Rc8 10.Rc1 Nf6=) 10.Bg7+- Ne7 (10...Be5 11.Be5 f6 12.Bc3+-) 11.Bh8 Qb6 12.d4 0-0-0 13.Bf6 Rg8 (13...Rd7 14.Bd3+-) 14.Be7 Be7 15.Qf7 Qd8 16.Qe6 Kc7 17.bc6 Rg6 (17...Nc6 18.Qh6+-) 18.Qe5 Kc6 19.Bb5 Kb6 20.Rb1 a6 21.Bd3 Ka7 22.Bg6 hg6 23.0-0 Bd6 24.Qg7 g5 25.c4! Qb8 (25...Nc4 26.Qb7 Mate attack; 25...dc4 26.Nc4) 26.cd5 Bh2 27.Kh1 g4 28.Qg4 Bc7 29.Qg7 Bd6 30.g3 Bf8 31.Qf7 Qd6 32.Nc4 Qe7 33.Qe7 Be7 34.Na5 Bd8 35.Nb7 (35.Rb7 Ka8 36.Rfb1 Bb6 37.R7b6 Ka7 38.Nc6 Ka8 39.Ra6) 35...Bb6+- 36.Rb6! Kb6 (36...Kb6 37.Rb1 Combination) 37.Rb1 Kc7 38.e4 1–0. Hal1958 – Pytolo98, playchess.de, 2004.

5.a4 f6 6.Bd3 =.

5.a4 f6 6.Nf3 Nc4 (6...e5 7.d4 e4 8.Nfd2=) 7.Bc3 (7.Bc4 dc4 8.Qe2 cb5 9.ab5 Be6+=) 7...e5 8.Bc4 dc4 9.0-0 (9.bc6 bc6 10.Qe2 Be6=) 9...cb5 10.ab5 Bc5 11.d3 cd3 12.cd3 Qb6 13.d4 ed4 14.Bd4 Bd4 15.Nd4 Ne7 16.Nc3 0-0 17.Qb3 Rf7 18.Nd5 Nd5 19.Qd5 Bd7 20.Rab1 Rc8 21.Rfd1 Rc5 22.Qa2 Kf8 (22...Bb5?? 23.Nb5 Rc6 24.Na7+-) 23.Rb2 Be8?? (better is 23...Re7+=) 24.Ne6+- Ke7 (24...Kg8 25.Nc5 Qc5+-) 25.Nd4 Bb5?? 26.Nb5+- Rb5 27.Rb5 Qb5+/- 28.Qa7 Kf8?? 29.g3 Qc6 30.Qa3 Kg8?? 31.Rd8 (31.Rd8 Qe8 32.Re8 Rf8 33.Qf8) 1–0. Valpa – Felipe_Lungov, playchess.de, 2002.

5.a4 h6 6.Nf3 Bg4 7.Be2 (7.Bd3 Nf6=) 7...Bf3 (7...e6 8.0-0=) 8.Bf3+= e6 9.0-0 h5 (better 9...Nf6+=) 10.Bh5?? (better 10.d3+=) 10...Rh5?? (better 10...Qh4 11.g4 Nf6-/+) 11.Qh5+- g6 (11...Nc4 12.Bc3+-) 12.Qh8 Nf6 (12...Nc4+-) 13.Bf6 Qd6 14.Be5 Qc5 15.Bc3 (15.Bd4 Qd6+-) 15...Nc4 16.Bd4 Qb4 17.Nc3 (17.d3 Nd6+-) 17...0-0-0 (17...Nd2 18.Rfd1 Nc4 19.e4+-) 18.bc6 bc6 19.Rfb1 Qd6 (19...Qa5 20.Qf6 Nd2 21.Qf7+-) 20.d3 Be7 21.Qg7 Nd2 (21...e5 22.Ba7 Na3 23.Rb8 Kd7 24.Rb7 Kc8 25.Rb6+-) 22.Be5 Qd7 23.Rb8 1–0. GuestHSLP – GuestMWNW, freechess.org, 2018.

5.b6 ab6 (better 5...Qb6 6.Bc3 Nf6-/+) 6.c4? (6.Nf3!?=+) 6...dc4 (6...Nc4 7.Bc3–+) 7.d4 (7.d3 b5-/+) 7...b5–+ 8.d5 (better 8.Qc2–+) 8...cd5 9.Nf3 (9.Nc3 Nf6 10.Nb5 Bd7–+) 9...Nf6 10.g4 (10.Na3 b4 11.Nb5 Bd7 12.Bf6 Bb5–+ (12...gf6?! 13.Qd5 Rc8 14.Rd1–+; 12...ef6?! 13.Qd5 Bc6 14.Qd8 Rd8 15.Nfd4–+)) 10...Ng4 (10...Bg4 11.Be2–+) 11.Rg1 (11.Nc3 e6 12.Rg1 Nf6 13.Nb5 Nc6 14.Bf6 gf6–+) 11...Nf6 12.Qd4 (12.Bf6 ef6 13.Nc3 Bb4–+) 12...Nc6 13.Qh4 (13.Qd2 e5! 14.Qc2 Qa5 15.Nbd2 Ne4–+) 13...e6 (better 13...Qa5 14.Kd1–+) 14.Ne5 (14.a3 b4 15.ab4 Bb4 16.Kd1 Ra1 17.Ba1 Bf8–+) 14...Ne5 (better 14...Qa5!? 15.Ke2 Qa4 16.Nc6 Qc2 17.Kf3 Qb2 18.Qd4–+) 15.Be5 Be7 (better 15...Nd7 16.Qd8 Kd8–+) 16.Nc3 (16.Qd4 Rg8–+) 16...Ne4 (better 16...Nd7 17.Qg3 Ne5–+) 17.Nb5 (17.Qg4 Bf6 18.Ne4 Be5 19.Rd1 Ra2 20.Nd2–+) 17...Bh4 18.Rg7 Bf2 (18...Qa5 19.Nc3 f6 20.Kd1 Nf2 21.Kc2 fe5 22.Bc4 dc4 23.Rgg1–+) 19.Ke2 Qh4 20.Nd6 Ke7 (better 20...Nd6 21.Bd6 Qf6 22.Rg4–+) 21.Nc8 (21.Rf7 Kd8 22.Bh8 Qh5 23.Rf3 Be3 24.Nc4 Bc5–+) 21...Kd7 (21...Rhc8 22.Bg2 Qh5 23.Rg4 Qe5 24.Be4 Qa1 25.a3 Qe1 26.Kf3 Qf1 27.Rg2 de4 28.Kg4 Qg2 29.Kf4 Kf6 30.h3 Qf3) 22.Nb6 Kc6 23.Rb1 Qh5 24.Rg4 Qg4 0–1. Agiant – samuellrei, lichess.org, 2018.

5.bc6 Nc6 6.Bb5 Qb6 7.Nc3 e6 8.Rb1 Qa5 9.Nge2 (9.Nf3 a6 10.Bc6 bc6=) 9...a6 10.Bc6 bc6 11.Nd4 Bd7 12.0-0 Bb4? (better is 12...Nf6=) 13.Nb3+/- Qc7 (better is 13...Qd8!? 14.Nd5! Bf8+-) 14.Nd5!+- cd5 (14...cd5 15.Bg7 Combination; 14...ed5 15.Bg7 Combination) 15.Bg7 Bd6 16.Bh8 Bh2 17.Kh1 f6?? (17...Bd6+-) 18.Qh5 Ke7 (18...Kf8 19.Qh2 Qh2 20.Kh2+-) 19.Qh2 (better is 19.Qh7 Kd6 20.Qh2 e5 21.f4+-) 19...Qh2 20.Kh2 e5 (20...Nh6 21.Bf6! Kf6+-) 21.d4 (21.d4 Nh6 22.Bg7+-) 1–0. Jean,Ludovic (1785) – Vlahovic,Velimir, Skopje MKD, 4th Karpos Open, 2014.

5.bc6 Nc6 6.Nf3 Qb6 7.Bc3 f6 =.

5.bc6 Nc6 6.Nf3 Bg4 7.Be2 e6 8.0-0 Nf6 9.d3 Bd6 10.Nbd2 e5 11.h3 Bh5 12.c4 e4 (12...0-0!?=) 13.de4+/- de4 14.Nd4 (14.Ng5 Be2 15.Qe2 Be5 16.Nde4 Ne4 17.Ne4 0-0+/-) 14...Nd4 (14...Be2 15.Qe2 Qd7 16.Nc6 Qc6 17.Bf6 gf6 18.Qg4+/-) 15.ed4 (15.Bh5 Bb4+/-) 15...Be2 (15...Bg6 16.c5 Bf4 17.Qa4 Kf8 18.Rad1+=) 16.Qe2+/- 0-0 17.Ne4 Ne4 18.Qe4 Re8 19.Qg4 (worse is 19.Qb7 Rb8 20.Qa7 Rb2-/+) 19...Qf6 20.Rab1 Re6?? (better is 20...b6+/-) 21.d5+- (21.d5 h5 22.Bf6 hg4 23.de6 gf6 24.Rfd1+-) 1–0. Fournier,Frederic (1885) – chaverra, Active (5/0), 2005.

5.d3 cb5+= 6.Nf3 Nc6 7.Be2 e5 (better is 7...Qd6!?+=) 8.Ne5= Ne5 9.Be5 f6 10.Bb2 Bc5 11.Nc3 (11.d4 Qa5 12.c3 Bd6+/-) 11...d4 12.Nb5?? (12.Ne4 Bb4 13.c3 dc3 14.Bc3 Bc3 15.Nc3 Be6+/-) 12...de3?? (better is 12...Qa5 13.Kf1 Qb5 14.Bd4 Bd4 15.ed4 Ne7–+) 13.fe3 Be3 14.Bc1?? (14.Bh5 g6 15.Qe2+=) 14...Ne7?? (better is 14...Bc1 15.Bh5 g6 16.Rc1 Qa5 (16...gh5?! 17.Qh5 Kf8 18.0-0-/+) 17.c3 Qb5–+ (17...gh5?! 18.Qh5 Kd8 19.Qc5+=)) 15.Be3+/- 0-0?? 16.0-0+- Nf5 17.Bc5 Re8 18.Bg4 b6? 19.Ba3 Ne3= 20.Qf3? Nf1?? 21.Rf1 Bg4 22.Qg4 a6? 23.Nc3 b5 24.Ne4 a5?? 25.Nf6+- Kf7 26.Ne8 Ke8 27.Rf8 1–0. Fournier,Frederic (1800) – vircof (1645), Active (1/1), 2005.

5.Bd4 a6 =.

5.Bd4 Nf6 =.

5.Nf3 a6 6.a4 Nc4 (6...Nf6 7.Nc3=) 7.Bc4+= dc4 8.bc6 b5 (better is 8...bc6!? 9.Na3 Rb8 10.Nc4 Be6+/-) 9.ab5+- a5 (better is 9...Rb8+-) 10.b6?? (better is 10.d3+-) 10...Qb6+= 11.Bd4 Qc6= 12.Nc3 Bg4 13.0-0 f6 14.Qb1 Bf3 15.gf3 Qf3 16.Qb5= Kf7 17.Qc4 e6 18.Qc7 Be7 19.Ra5 Ra5 20.Qa5 Nh6 21.Qc7 Ng4 22.Bc5 Re8 23.Be7 Re7 24.Qg3 Ne5 25.Qf3 Nf3= 26.Kg2 Nd2 27.Rd1 Nc4 28.Ne4 g5 29.Nd6 Nd6= 30.Rd6 (30.Rd6 Rc7 31.Rd2=). wach – alex12345, Caissa.com, 2004.

5.Nf3 a6 6.ba6 ba6 7.Nc3 e6 8.Rb1 Bb4? (Better is 8...Nf6=) 9.Nd5!+- cd5? (9...ed5 10.Bg7) 10.Bg7 Bd2 (10...Nc6+-) 11.Nd2 f6 (11...Ne7 12.Bh8 Ng6 13.Bg7+-) 12.Bh8 Qe7 13.Qg4 Qf7 (13...Qf8 14.Qh4+-) 14.Qa4 Bd7 15.Qa5 h6 (15...Ne7 16.Qc3 Rc8 17.Qf6 Rc2 18.Rb8 Rc8 19.Qb2+-) 16.Ba6 Qh7 17.Bd3 Qh8 18.Qa8 Kf7 19.Rb7 Ke7 20.Qa3 Kd8 21.Qf8 Be8 22.Qd6 1–0. market (2285) – colonyking1, GameColony.com, 2002.

5.Nf3 a6 6.ba6 ba6 7.Bd3 h6 8.0-0 e6 9.Nc3 Nf6 10.Rb1 Nc4 (10...Qc7!?+/-) 11.Bc4+- dc4 12.Qe2 Nd5 (12...a5 13.Qc4 Qc7 14.d3+-) 13.Qc4 a5 14.Qc6 Bd7 15.Qc4 Rc8 16.Qe2 Bc6 (16...Nf6 17.e4+-) 17.Ne5 Ba8 (17...Nc3 18.Bc3 Qd5+-) 18.Qb5 Ke7 19.Ba3 Kf6 (19...Nb4 20.Rb4 ab4 21.Qb4 Ke8 22.Qb5 Bc6 23.Nc6 Qd7 24.Bf8 Rf8+-) 20.Ne4 Kf5 (20...Ke5 21.g4 Ke4 22.f4 Rc2 23.Rb3 Rc3 24.Rc3 Nc3 25.Qc4 Qd4 26.Qd4) 21.g4 Ke5 (21...Ke4 22.Qd3 Ke5 23.Qd4) 22.f4 Ke4 23.Qd3 1–0. pierred – anony, internet, 2015.

5.Nf3 a6 6.ba6 b6 +=.

5.Nf3 Qb6 6.Qc1 (6.Nc3 Nc4 7.Bc4 dc4+=) 6...cb5 (6...Nc4 7.a4=) 7.Nc3 e6 8.Bb5 Nc6 9.0-0 Nf6 10.Nd4 (10.Ba3 Bd7+=) 10...Bd6 11.h3 (11.Ba3 Qc7 12.Bd6 Qd6=) 11...0-0+= 12.Nc6 bc6 Black launches an attack. 13.Be2 Rb8 14.Nd1 Qa5 15.f4 (15.Bf6 gf6 16.c3 Ba6 17.Ba6 Qa6+=) 15...Ne4-/+ 16.d3 Ng3 17.Rf2 Qe1 18.Bf1 Qf1 (18...f6 19.Ba3 c5 20.c4+=) 19.Rf1+= Ne2 20.Kf2 Nc1 21.Bc1 (21.Rc1 f6+=) 21...e5-/+ 22.fe5 Be5 23.d4 (23.c3 Re8-/+) 23...Bf6 (23...Bd6 24.a4-/+) 24.Ba3 Re8 25.Nc3 Bh4 26.Kf3 Ba6 (26...Bf5 27.Bc5 Rb2 A) 28.Ba7 Rc2 (28...Bc2?! 29.g3 Bg5 30.Rfe1-/+) 29.Rac1 Be4 30.Kg4 Rg2 31.Kh4 Re6 32.Rf6 Rf6 33.Ne4 Rh6; B) 28.Rac1-/+) 27.Rfb1+= Bg5 Attacks the backward pawn on e3 (27...Rb1 28.Rb1 Bg5 29.Nd1+=) 28.Rb8= Rb8 29.Bc5 Bc4 30.Ba7 Rb2 31.Rb1 (31.Rc1 Ba2 32.Na2 Ra2=) 31...Rb1+= 32.Nb1 Ba2 33.Nd2 Be7 34.c3 Bd6 35.Ke2 h5 36.e4 f6 37.Ke3 g5 38.Ke2 (38.Kd3 de4 39.Ne4 Bb1 40.Ke3 Bf4 41.Kf3 Kf7+=) 38...Kf7 39.Bb6 Bf4 40.Bd8 Bd2 41.Kd2 de4 42.Ke3 ½–½. Zhukov,Yuri – Goncharenko,Nikolay, Doroshkevich Mem, 2007.

5.Nf3 Nc4 6.Bc4 dc4 7.a4 cb5 8.ab5 a6 9.0-0 e6 10.Nc3 Bb4 11.Ne4 Nf6 12.Ne5?? (better is 12.Bf6 gf6 13.ba6+/-) 12...Ne4–+ 13.c3? (13.Qg4 f6 14.Qh5 Ke7 15.Qf7 Kd6 16.Nc4 Kc5 17.ba6 A) 17...Kc4? 18.ab7 Ra1 A1) 19.bc8R?! Qc8 20.d3 Kb5 21.Ra1 Nc3+- (21...Qc2?? 22.Qb7 Kc5 23.Bd4 Kd6 24.Ra6 Qc6 25.Rc6 Kd5 26.Rb6); A2) 19.Ra1+-; B) 17...ba6 18.Qg7 Kc6 19.Qg4+=; C) 17...Ra6?! 18.Qg7 Rg8 19.Qh6=+; D) 17...Ng5 18.ab7 Ra1 (18...Nf7?? 19.ba8Q Ne5 20.Be5 fe5 21.Ne5+-) 19.Ra1 Nf7+/-) 13...Ba5 (better is 13...Bd6!? 14.d4 Be5 15.de5 Qd1 16.Rfd1–+) 14.Nc4 ab5 15.Na5 Ra5 16.Ra5 Qa5 17.Qc2 Qa2 18.Ra1 Qc4?? (better is 18...Qd5 19.d3 Nc5–+) 19.d3+= Qc6 20.de4 0-0 21.Rd1 Qc4 22.Qd3 Qd3 23.Rd3 (23...e5 24.Rd5+=) +=. valpa – pasanbada, HCL–C1898 playchess.de, 2003.

5.Nf3 Nc4 6.Bc4 dc4 7.bc6 bc6 8.Ne5 (8.Qe2 Qb6 9.Bc3 Rb8+=) 8...Qd5+= 9.0-0 (9.Qf3 Qf3 10.gf3 f6 11.Nc4 e5+=) 9...f6 (9...Rb8 10.Bd4 c5 11.Bc3+=) 10.Nf3= Nh6 (10...Bg4 11.Nc3 Qh5 12.Rb1=) 11.Nc3 Qd6 12.Ne4 Qd5+= 13.Ng3 Ba6 14.e4+/- Qd6 15.e5+- Qd5 16.ef6 ef6+/- 17.Re1 Kd8 18.Nd4 Kc7 19.Ne6+- Kb6? 20.Rb1 Bb5 21.a4! Ba4 22.Bd4 Ka5 23.Bc3 Ka6 24.Nc7# 1–0. Wall,Bill – Peng, internet, 1998.

5.Nf3 Bd7 6.Na3 a6 7.ba6 ba6 8.c4 dc4 9.Nc4+- Nc4 10.Bc4 Nf6 11.0-0 Bf5 (11...e6 12.Qc2+-) 12.Ne5 (12.Qa4 Bd7+-) 12...Qd6?? (12...e6 13.Qa4 Qc7 14.Nc6 Qd7+-) 13.Bf7 (13.Bf7 Kd8 14.Rc1+-) 1–0. Pamieci Krzysztofa P – napohybel, internet, 2016.

5.Nf3 Bd7 6.Na3 a6 7.ba6 ba6 8.c4 Nf6 9.d4 dc4 (9...Rb8 10.Bc3=) 10.Nc4+= Nc4 11.Bc4 Nd5 (11...Qa5 12.Qd2 Qd2 13.Nd2+=) 12.0-0+/- Be6 (12...e6 13.e4 Nb6 14.Be2+/-) 13.Ne5 Nc7?? (better is 13...Qd6+/-) 14.Be6+- Ne6 (14...fe6 15.Qh5 g6 16.Ng6 hg6 17.Qh8+-) 15.Qf3 (15.Nc6?! Qd5 16.Ne5 f6+-) 15...Rc8 (15...Qc8 16.Qf7 Kd8+-) 16.Qf7# 1–0. Bonetti,Shane – Heywood, ICC, 2003.

5.Nf3 Bd7 6.a4 Nf6 7.Be2 e6 8.0-0 Bd6 9.d4 (9.Be5 Be7=) 9...Ne4 (9...cb5 10.ab5 (worse 10.Bb5 Bb5 11.ab5 Nc4-/+) 10...Nc4 11.Bc4 dc4 12.Nc3=) 10.Nbd2 f5 (10...Nd2!? 11.Nd2 Qc7=) 11.Ne4+= fe4 12.Nd2 (12.Ne5 cb5 13.ab5 Qc7+=) 12...Qh4 (12...Qc7 13.h3=) 13.g3 Qh3 (13...Qd8 14.f3 0-0 15.fe4=) 14.Bg4 Qh6 15.h3 (15.Bc3 Bc7=) 15...0-0-0 (15...0-0 16.Bc3 b6 17.Ba5 ba5 18.c4=) 16.Qe2 (16.Bc3 Bc7=) 16...Rhf8 (16...Qg6 17.Bc3 Bc7 18.h4=) 17.c4+= Qg6 18.c5 (18.Rac1 Kb8+=) 18...Bc7= 19.Bc3 Rf6 (19...Be8!? 20.Qe1 h5+=) 20.Rab1+/- White prepares b6 20...Rh8? (better 20...Be8!? 21.h4 Nc4 22.Nc4 dc4+/-) 21.Bh5+- Qh6 22.Bg4 g6?? (better 22...Qg6=) 23.b6+- ab6 24.cb6 Bb8 25.Ba5 Qf8 (25...Qg7 26.Qd1+-) 26.Bb4 Qf7 (26...Bd6 27.Bd6 Qd6+-) 27.Bc5 (better 27.a5 Kd8 28.a6 ba6 29.Qa6+-) 27...h5+/- 28.a5 hg4 29.Qg4?? (29.a6 Rh3 30.ab7 Kd8 31.Kg2-/+) 29...e5-/+ 30.Qe2 Rh3 (better 30...Bh3 31.a6 Bf1 32.Qg4 Rf5-+) 31.de5?? (31.Kg2 ed4 32.Bd4-+) 31...Be5 (better 31...Qh7 32.f4 Rg3 33.Kf2-+) 32.Bd4?? (32.Kg2 Rf3! 33.Nf3 ef3 34.Qf3 Rh2 35.Kh2 Qf3 36.e4 de4 37.a6 Bg3 38.fg3 Qh5 39.Kg1 Qc5 40.Kg2 ba6 41.b7 Kb8 42.Rfd1-+) 32...Qh7 33.f3 (33.f4 Rg3 34.Kf2-+) 33...Rh1 34.Kf2 Qh2 (34...Bg3 35.Kg3 Qh4 36.Kg2 Qh2) 35.Ke1-+ Bg3 (better 35...Qg3!? 36.Qf2 Rf1 37.Kf1 Qh3 38.Qg2 Bd4 39.ed4-+) 36.Kd1 Rf7 (36...Rf1!? 37.Qf1 Rf7-+) 37.Qh2-/+ Rh2 38.fe4 Rf1 39.Nf1 Rh1 40.Kd2 Bd6 (40...Bh3!? 41.ed5 Rf1 42.Rf1 Bf1 43.dc6 bc6-+) 41.ed5 cd5 42.Ke2 Bb5?? (42...Bg4 43.Kf2-/+) 43.Kf2 (better 43.Rb5 Rh5 44.Nd2+-) 43...Bf1-/+ 44.Rf1 Rh2 (44...Rf1 45.Kf1 Bb4-+) 45.Kg1 (45.Kf3 Kd7=) 45...Ra2 46.Rf6 Kd7 47.Rg6 Ra5 48.Rg7 Kc6 49.Kg2 Bc5 50.Bc5 Rc5 51.Rg6 Kb5 52.Kf3 (52.Rd6!?=+) 52...Rc6-/+ 53.Rc6?? (better 53.Rg5 Kc4 54.Rg4 Kc5 55.Rg5 Rb6 56.e4-/+) 53...Kc6-+ 54.Kf4 Kb6 55.Ke5 Kc6 56.Kd4 b5 57.Kc3 Kc5 58.Kb3 b4 59.Kc2 (59.Kb2 Kc4 60.Kc2 b3 61.Kd2 Kb4-+) 59...Kc4 60.Kd2 d4 (better 60...b3 61.Kc1 Kc3 62.Kd1-+) 61.e4?? (better 61.ed4 Kb5 62.Kc2=) 61...b3-+ 62.e5 Kd5 (62...d3 63.Ke3 b2 64.Kf2 b1Q 65.Kg2 d2 66.Kh2 Qg6 67.e6 d1Q 68.e7 Qdh5) 63.e6 (63.Kc1-+) 63...b2 (better 63...Ke6 64.Ke2 Kd5-+) 64.Kc2= b1Q 65.Kb1 Ke6 66.Kc2 Kd5 67.Kd2 Kc4 68.Kc2 d3 69.Kc1?? (better 69.Kd2=) 69...Kc3-+ 70.Kd1 d2 71.Ke2 Kc2 (71...Kc2 72.Ke3 d1Q 73.Kf4 Qd5 74.Ke3 Qe5 75.Kf3 Kd3 76.Kf2 Qe3 77.Kg2 Ke2 78.Kh2 Kf2 79.Kh1 Qh6) 0-1. upep - mm93 (1690), Rated Classical game, lichess.org, 2013.

5.Nf3 e6 6.c4 dc4 (6...Nc4 7.Bc4 dc4 8.bc6 bc6 9.Na3=) 7.bc6= bc6 (7...b5 8.d3=) 8.Bc3 (better is 8.Qa4+=) 8...Ba6?? (better is 8...Nb7=) 9.Qa4+- Bb5 (9...Rb8 10.Ba5 Bb5 11.Bd8 Ba4 12.Bc7+-) 10.Qa5 (< 10.Ba5 Qf6 11.Bc3 Ba4 12.Bf6 Nf6 13.Bc4 Bb5=) 1–0. Wall,Bill – Oceanu, internet, 2004.

5.Nf3 e6 6.Ne5 f6?? (better is 6...Nf6=) 7.Qh5+- g6 8.Ng6! hg6 9.Qh8 Ne7 (9...Kf7 10.Qh7 Bg7 11.h4+-) 10.Bf6 Kd7 11.Nc3 c5 12.h4 d4 (12...b6 13.d4+-) 13.ed4 cd4 14.Ne4 a6 (14...b6 15.Bg5 Nb7 16.Rh3+-) 15.Bg5 (better is 15.Bg7 ab5 16.Bf8+-) 15...ab5 (15...Nac6 16.bc6 Kc6+-) 16.Qd4 Kc7 17.Bf4 Kc6 (17...e5 18.Qe5 Kd7 19.Nf6 Kc6 20.Qb5) 18.Qc5 Kd7 19.Nf6 1–0. MarRam – Cem,Alan, internet, 2010.

5.Nf3 Bf5 6.Be2 Nc4 (6...Nf6 7.0-0+=) 7.Bc4 dc4 8.bc6 bc6 9.Nc3 e6 10.0-0 (10.Ne5 Nf6+/-) 10...Bd6 (10...Bg4 11.Rb1+=) 11.Nb5 cb5? (better is 11...Bf8 12.Nbd4 Be4+=) 12.Bg7+- f6 13.Bh8 Qe7 14.Nd4 Bg6 15.Nb5 0-0-0 16.Qe2 Nh6 17.Qc4 Kb8 18.Rfb1 (18...Qb7 19.Na7+-) 1–0. woschkat (1995) – katchum (1690), net–chess.com, 2001.

5.f4 cb5 6.Bb5 Bd7 7.Qe2 a6 (7...Rc8 8.Na3=) 8.Bd7 Qd7 9.Nf3 Nf6 (9...Rc8 10.Ne5 Qf5 11.d3=) 10.Ne5 (10.Bf6 ef6 11.Qd3 Nc4+=) 10...Qc7= 11.d3 e6 12.0-0 Bd6 (12...Bc5 13.Nf3=) 13.Ng4 Ng4 14.Qg4 0-0-0 (better is 14...Rg8!? 15.Qh4 h6=) 15.Qg7+/- (15.Bg7? f5 16.Qg5 Rhg8–+) 15...Qc2?? (better is 15...Nc6+/-) 16.Rc1+- Qc1 17.Bc1 Bc5 18.Qf7 Rdf8 19.Qe6 Kb8 20.d4 Rf4 21.Qe5 Ka7 22.Qf4 Rf8 23.dc5 Rf4 24.ef4 b6 25.cb6 Kb6 26.f5 Nc6 27.f6 Nd8 28.Ba3 Kc6 29.Nc3 d4 30.Ne4 Kd5 31.Ng5 h6 32.Be7 Ne6 33.f7 Ke5 34.Ne6 Ke6 35.f8Q Kd7 36.Rc1 Ke6 37.Qf6 Kd7 38.Qd4 Ke6 39.Re1 Kf7 40.Bh4 Kg8 41.Re7 Kf8 42.Qg7# (42.Qd8#) 1–0. Lais,Klaus Joerg – Mang,Thomas, Saarland–chC, 1992.

5.h3 cb5 6.Bb5 Bd7 7.Be2 e6 8.Nf3 Bd6?? (better 8...Nf6=) 9.Bg7+- Qf6 (9...f6 10.Bh8 Kf7 11.e4 de4 12.Nd4+-) 10.Bf6 Nf6 11.0-0 Rg8 12.d4 Nc6 13.c4 (13.Nbd2 e5 14.de5 Ne5+-) 13...e5 (13...dc4 14.Bc4 e5 15.Kh1+-) 14.de5 (better 14.cd5 Bh3 15.dc6 Bg2+-) 14...Be5 (14...Ne5 15.Kh1 Nf3 16.Bf3+-) 15.Ne5 Ne5 (15...Bh3 16.Nc6 Rg2 17.Kh1 bc6 18.Qd4+-) 16.cd5 (better 16.Qd4 Nc4 17.Qf6 Bh3+-) 16...Bh3 17.f4 (17.Qa4 Ned7 18.Bf3 Bg4+-) 17...Bg2 (17...Rg2 18.Kh1 Nfg4 19.Qa4 Kd8+-) 18.fe5 Bf1 (18...Nd7 19.Rf4 Ne5 20.Qa4 Kd8 21.Kh2+-) 19.Kf1 Ne4 (19...Nd7 20.Bb5 a6 21.Bd7 Kd7+-) 20.Qa4 Kd8 21.Qe4 Rc8 22.Qh4 Kc7 23.Qe7 White intends d6 (23.Qf4!? Kb8 24.e6 Ka8+-) 23...Kb8 24.Na3 Rc7 25.Qb4 (25.Qd6 a6 26.Rc1 Rg5 27.Qc7 Ka8 28.Qd8 Ka7 29.Rc8 Rf5 30.Ke1 Rf1 31.Kf1 b5 32.Qc7) 25...f5 26.d6 (26.Qd6 a6 27.Rc1 Rgg7 28.Qd8 Ka7 29.Rc7 Rg8 30.Qd6 f4 31.Qa6 Kb8 32.Qb7) 26...Rcg7 27.Bf3 Rg1 28.Ke2 Ra1 29.Qb7 1–0. Zaichenko,Andrey – Leurette,Marc_Antoine, FICGS, 2008.

6.Nf3 e6 7.Be2 Bd6 8.0-0 Bd7 9.Ne5 Qc7 (9...h5 10.f4+=) 10.f4+= 0-0 11.Bd3 c5 12.Nd7 (better 12.Qe1+=) 12...Qd7?? (better 12...Nd7 13.Qg4 g6=) 13.Bf6+- gf6 (13...Be7 14.Bc3 b6+-) 14.Qh5 f5 (14...Rfc8 15.Qh6 Nc6 16.bc6 Re8 17.Rf3 Bf4 18.ef4 e5 19.Rg3 Qg4 20.Rg4 Kh8 21.Qh7) 15.Qg5 Kh8 16.Qf6 Kg8 17.Rf3 Rfe8 (17...Rfd8 18.Qh6 f6 19.Rg3 Kf7 20.Rg7 Kf8 21.Qf6 Ke8 22.Rg8 Bf8 23.Rf8) 18.Qh6 f6 (18...Bf4 19.ef4 Kh8 20.Rg3 Rg8 21.Qf6 Rg7 22.Qg7) 19.Rg3 Kh8 20.Qf6 Qg7 21.Qg7 1–0. GuestRDWY – GuestZKGM, freechess.org, 2020.

6.Nf3 e6 7.Ne5 Bd6 8.Be2 a6 9.0-0 ab5 10.ab5 Bd7 11.Bd3 cb5 12.Nd7 Nd7 13.Qg4 Nc4 (13...Qc7 14.f4 (14.Qg7?! Bh2 15.Kh1 Be5 16.Be5 Qe5 17.Qe5 Ne5=) 14...Bf8 15.f5+/-) 14.Ra8 (14.Bg7?! Rg8 15.Ra8 Qa8=+) 14...Qa8 15.Qg7 (15.Bg7 Rg8 16.Qd4 Qb8=+) 15...Ke7?? (better 15...Rf8+/-) 16.Qg5+- Nf6 (16...Ke8 17.Bh8 Nf8+-) 17.Qf6 Kd7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 Bg4 7.Be2 e6 8.0-0 Bd6 9.h3 (9.Ne5 Be2 10.Qe2 0-0=) 9...Bh5 (9...Bf3 10.Bf3 Nc4 11.Bc3=) 10.d4 (10.d3 0-0=) 10...0-0 (10...Bf3 11.Bf3 Nc4 12.Ra2=+) 11.Nbd2= a6 (11...Qe7 12.Re1=) 12.ba6 ba6 13.Qc1 (13.Ba3 Ba3 14.Ra3 Qd6=) 13...Qc7 14.Nb3 (14.Ba3 c5=) 14...Rfb8=+ 15.Na5 Qa5 16.Ba3 (16.c4 Ne4 17.c5 Bc7=+) 16...Bb4 (16...Ba3 17.Ra3 c5 18.g4=+) 17.g4= White is in command 17...Bg6 18.Ne5 Rb6 (18...Bd2 19.Qd1 Rb6 20.c4=) 19.Bb4+= (< 19.Ng6 fg6 20.c4 Bc3=+) 19...Qb4 (19...Rb4? 20.Nc6 (20.Ng6 hg6 21.c4 Ra4=+) 20...Qb6 21.Nb4 Qb4 22.c4+-) 20.a5 Rb7 21.Nc6 (21.Rb1 Qe7+=) 21...Qc3= 22.Ne5 Qc2 (22...Bc2 23.Ra2 Rc7 24.Qb2+=) 23.Qc2+= Bc2 24.Rfc1 Bg6? (better is 24...Rb2!? 25.Ba6 Ra6+-) 25.Ba6!+- Rba7 26.Rc8 Rc8 27.Bc8 Kf8? 28.a6 Ne8 29.Bb7 Nd6 30.Nc6 Rb7 31.ab7 Nb7 32.Ra8 (32...Nd8 33.Rd8#) 1–0. Szymanski,Marcin – Rubinowski,Sebastian, Zbaszyn, 1993.

6.Nf3 Bg4 7.Be2 g6 8.h3 Bd7 (8...Bf3 9.Bf3 Bg7 10.d3=) 9.Ne5 Be6 10.0-0 Bg7 11.bc6 bc6 12.d4 0-0 13.Nd2 Nd7 14.Nd7 Bd7 15.Ba3 Re8 16.c4 e5 17.de5 Be5 18.Rc1 Be6 19.cd5 Bd5 (19...Qd5 20.Rc5 Qd6 21.Ra5 Bh2 22.Kh1 Qa3 23.Ne4=) 20.Bf3 Qd7 21.Bb4 Nb7 22.Nc4 Qe6 (22...Bg7 23.e4 Be6 24.Qd7 Bd7 25.e5+=) 23.Ne5+- Qe5 24.Bc3 Bf3 25.Qf3 (25.gf3?! Qg5 26.Kh2 Rad8=) 25...Qe4? (better 25...Qe6+-) 26.Qf6+- (26.Qf6 Kf8 27.Rb1+-) 1–0. DEFFM – GuestSQHK, freechess.org, 2018.

6.Nf3 Bg4 7.h3 Bd7=.

7.Qe2 Rc8 8.Ne5 Nf6 =.

7.Be2 e6 8.c4 (8.Ne5 Nf6=) 8...Nf6 (8...Nc4 9.Bc3-/+) 9.0-0 (9.cd5 Nd5 10.0-0 Rc8=) 9...Bc6 (better is 9...Nc4!? 10.Be5 Ne5 11.Ne5 Bd6-/+) 10.cd5= Bd5 11.Nc3 Nc4 (11...Bc6!?+=) 12.Bc4+/- Bc4 13.Qa4 Qd7?? (better is 13...b5 14.Nb5 Bb5 15.Qb5 Qd7+/-) 14.Qc4+- Rc8 15.Qe2 Bd6 16.h3 0-0 17.Nb5 Rc2 18.Bf6 gf6 19.Nfd4 Rb2 20.Na7 Be5 21.a4 Bd4 22.ed4 Qd4 23.Nb5 Qd2 24.Qf3 f5 25.Qb7 Qg5 26.Rab1 Rd2 27.Qf3 Kh8 28.Ra1 Rg8 29.h4! Qg6 30.a5 Rd3 31.h5 Qg5 32.Qg3?? Rg3–+ 33.fg3 Qg3 (34.Rf2 Ra8–+) 0–1. wlittle (2300) – mgomdysey (2135), net–chess.com, 2004.

8.0-0 e6 =.

8.0-0 h6 9.Ne5+= Qe6 10.Bd4 Nc4 (10...Nc6 11.Nc6 Qc6 12.Nc3+=) 11.f4 Ne5 12.fe5 f6 (12...b6 13.Nc3+-) 13.Qh5 Qf7 14.Qe2 Qg6?? (better 14...a6+-) 15.Qb5+- Kf7 16.Qd5 Ke8 (16...e6 17.Qb7 Be7 18.Qa8 Qc2 19.Qa7 Qc8+-) 17.e6 Rd8 (17...Qg2 18.Kg2 Rd8 19.Qh5 g6 20.Qg6) 18.Qb5 (18.Qb5 Rd7 19.Qd7) 1–0. GuestSZKR – GuestDHJH, freechess.org, 2019.

8.Ne5 Qc7 9.c4 dc4 10.Na3 +=.

8.Ne5 Qe6 9.0-0 (9.Bd4 Nc6 10.Nc6 Qc6=) 9...Nc4 (9...Nf6 10.Na3=) 10.Nc4+= dc4 11.Na3 (11.d3 cd3 12.cd3 Qa6+=) 11...Nf6 (11...Qa6 12.Qh5+=) 12.Qf3 (12.d3 cd3 13.cd3 a6+=) 12...Ne4+/- 13.Rfd1 (13.d3 c3 14.Bc1 Nd6+=) 13...Qc6+= 14.d3 cd3 (14...c3 15.Qe4 (15.de4? cb2 16.Rab1 e6–+) 15...Qe4 16.de4 cb2 17.Rab1+=) 15.cd3+/- Nc5 16.Qc6 (16.e4 e6+/-) 16...bc6 17.Rac1 (17.Nc4 Nd7+=) 17...Na4 18.Be5 (18.Ba1 Kd7+/-) 18...e6 (18...f6 19.Bg3 Nb2 20.Rd2+=) 19.Nc4 Be7 (better is 19...f6!? 20.Bg3 Rd8+=) 20.Bg7+- Rg8 21.Be5 (21.Ba1 c5+-) 21...f6 22.Bg3 (22.Bd6 c5+/-) 22...Kf7 (22...Rd8 23.Na5 c5 24.Nc6+/-) 23.Na5 (23.Nd6 Bd6 24.Bd6 Rac8+/-) 23...Rac8 (23...c5 24.a3+/-) 24.Nc6 (better is 24.Rc6 Nc3 25.Rd2+-) 24...Nc3?? (better is 24...Bc5+/-) 25.Rd2 (better is 25.Rc3 a6 26.Rb1+-) 25...Na4?? (better is 25...Rc6 26.Rdc2 Rgc8–+) 26.Rdc2+- Bc5 (26...Ba3 27.Na7 Rc2 28.Rc2+-) 27.Rc5 Nc5 28.Rc5 a6 (28...Ke8 29.Rc4 Kd7 30.Na5+-) 29.d4 h5 30.f3 Rg5 (30...Ke8 31.Nb8 Rc5 32.dc5+-) 31.Ne5 fe5 (31...Re5 32.Be5 (worse is 32.de5 Rc5 33.ef6 Kf6-/+; 32.Rc8 Re3 33.Rc7 Kg6+-) 32...Rd8 33.Bc7+-) 32.Rc8 (32.Rc8 ed4 33.ed4+-) 1–0. Wall,Bill – Paddy, internet, 2002.

9.Na3 a6 A) 10.Qh5 g6 (10...Qe6 11.Qh4 Nc6 12.Qa4 Nf6 13.Rb1 Ne4 14.Bd4 f6 15.Nc6 Qc6) 11.Qh4 Nf6 12.Qa4 Nc6 13.Nb5 Qd8 14.Nc6 ab5 15.Nd8 Ra4; B) 10.0-0 Nc6 (10...Nf6 11.c4 Nc6 12.d4 e6 13.Rc1 Be7 14.cd5 Qd5 15.Nac4 Ne5) 11.Nc6 Qc6 12.Rc1 b5 13.h3 h5 14.d3 b4 15.Nb1 Qa4; C) 10.Qg4 Nf6 (10...Nc6 11.Qa4 Nf6 12.f3 Qb4 13.Qb4 Nb4 14.0-0 e6 15.g4 Rc8; 10...b5 11.Qh5 g6 12.Qh4 Nf6 13.0-0 Bg7 14.Nd3 0-0 15.Qb4 Qb4; 10...e6 11.0-0 Qb4 12.Qf3 Nf6 13.Nd3 Qh4 14.g3 Qe4 15.Qe2 Qa4; 10...Rd8 11.Qh5 g6 12.Qh4 Nf6 13.0-0 Nc6 14.Nc6 bc6 15.Qg3 Qg3; 10...Nh6 11.Qa4 Nc6 12.0-0 Qb4 13.Qb3 Qb3 14.ab3 Ne5 15.Be5 Rc8) 11.Qa4 Nc6 12.0-0 Qb4 13.Qb4 Nb4 14.c4 e6 15.cd5 Nbd5; D) 10.c4 Nf6 (10...Nc6 11.Qa4 Nf6 12.0-0 Qb4 13.Qb4 Nb4 14.cd5 Nbd5 15.Rac1 e6) 11.Rc1 Nc6 12.c5 Qc7 13.Qa4 Qa5 14.Qa5 Na5 15.f3 e6.

9.Na3 Nc6 10.Nb5 Qd8 11.0-0 (11.Rb1 a6 (11...Nf6 12.0-0 a6 13.Nc6 bc6 14.Nd4 Qc7 15.f4 e6) 12.Nc6 bc6+= 13.Nd4 Qd7 14.0-0 Nf6 15.Nf3 g6; 11.Qh5 Ne5 12.Be5 Nf6 13.Bf6 ef6 14.Nc3 d4 15.Nd5 de3) 11...a6= (11...Nf6 12.f4 h5 13.Nd4 Nd4 14.Bd4 Qa5 15.Qe2 Ne4) 12.Nc6 bc6 13.Nd4 e5 (13...Qd7 14.Rb1 Nf6 15.Bc3 e6) 14.Nb3 (worse is 14.Nc6 Qb6 15.Ne5 Qb2-/+; 14.Nf3 f6 15.Nh4 Nh6) 14...Bd6 (14...Nf6 15.Be5 Bd6) 15.f4 Nh6 (15...Qc7!?+=) 16.fe5+/- Be7 17.Nd4 0-0? (better is 17...c5!? 18.Nc6 Qc7 19.Ne7 Qe7+/-) 18.Nc6+- Qc7 19.Ne7 Qe7 20.Bc3 Rac8 21.Rb1 Rfe8 22.Qf3 Qe6 23.Rb4 Rc3 24.dc3 d4?? (24...Qe5 25.Rb6 a5+-) 25.ed4 Qa2 26.Rfb1 Qc2 (26...Kh8+-) 27.Qc6 Rf8 28.Rb8 g6 (28...Qb1 29.Rb1 a5+-) 29.Rf8 Kf8 30.Rb8 1–0. pierre – ujcy, internet, 2011.

9.Na3 Nf6 A) 10.Nb5 Qc5 (10...Qb6 11.a4 Nc6 12.0-0 e6 13.c4 Rc8 14.a5 Qa6 15.Qe2 Ne5; 10...Qb8 11.f4 a6 12.Nd4 Qc7 13.0-0 e6 14.Rb1 Nc4 15.Nc4 dc4) 11.a4 a6 12.Bd4 Qc8 13.Nc3 Nc6 14.Qf3 Nd4 15.ed4 e6; B) 10.0-0 Qa6 11.f4 Rd8 12.Rc1 e6 13.c4 Ba3 14.Qa4 Nc6 15.Qa6 ba6; C) 10.c4 Nc6 (10...a6 11.Rc1 Nc6 12.c5 Qe6 13.Qa4 0-0-0 14.Nc6 Qc6 15.Qb4 e6; 10...Rc8 11.Rc1 Nc6 12.Nb5 Qd8 13.Qa4 a6 14.Na7 b5 15.cb5 Na7; 10...Nc4 11.Qa4 Nd7 12.Nac4 dc4 13.Nc4 Qa6 14.Qa6 ba6 15.Ke2 e6; 10...Qb4 11.Nb5 Qb2 12.Nd3 Qa1 13.Qa1 Rc8 14.cd5 a6 15.Nc3 e6) 11.Nb5 Qb8 12.f4 dc4 13.Nc4 a6 14.Nd4 Nd4 15.Bd4 b5.

9.Qe2 a6 A) 10.0-0 Nf6 (10...Nc6 11.Nc6 Qc6 12.Bd4 Nf6 13.Nc3 e6 14.Rab1 Bd6 15.Rb6 Qc7; 10...Nh6 11.Bd4 Nc6 12.Nc6 bc6 13.f4 f6 14.d3 Nf5 15.Nd2 Rb8) 11.f4 Qc7 12.Bd4 Qc2 13.Nc3 Nc4 14.Nd5 Nd5 15.Nc4 Rd8; B) 10.d4 Nf6 (10...Nc6 11.0-0 Nh6 12.Nd2 Nf5 13.Nc6 Qc6 14.c4 Rc8 15.cd5 Qd5; 10...Nh6 11.Nd2 Rc8 12.Rc1 f6 13.Nd3 Nc4 14.Nc4 Rc4 15.0-0 Nf5; 10...Qb6 11.Bc3 Rc8 12.Qd3 Nf6 13.0-0 Nc6 14.Nf3 Qc7 15.Nbd2 Nd8; 10...Rc8 11.0-0 Nf6 12.Nc3 Nc6 13.f4 e6 14.Rad1 Be7 15.Rf3 Qb4; 10...h5 11.0-0 Nf6 12.Nd2 Ng4 13.f3 Ne5 14.de5 Qc7 15.Rac1 b5; 10...Rd8 11.Nd2 Nf6 12.0-0 Nd7 13.f4 Qc7 14.Qd3 Rc8 15.Rac1 Ne5; 10...g6 11.Nd2 Bg7 12.0-0 Nc6 13.Nc6 Qc6 14.c4 Nf6 15.e4 de4; 10...b5 11.Nd2 Nf6 12.a4 b4 13.c4 Nc6 14.Rc1 Nd7 15.Nc6 Qc6) 11.0-0 Nc6 12.Nd2 b5 13.Ndf3 Nd7 14.e4 Rd8 15.ed5 Qd5; C) 10.f3 f6 (10...Nh6 11.Na3 f6 12.Nd3 b5 13.c3 Nc4 14.Nc2 Nf5 15.0-0 e6; 10...Rc8 11.Na3 f6 12.Nd3 b5 13.c3 Nc4 14.Nc4 bc4 15.Nb4 Nh6; 10...Nf6 11.0-0 Rc8 12.Na3 b5 13.Nd3 g6 14.Qf2 Nc6 15.e4 d4; 10...b5 11.0-0 Nf6 12.Bd4 Rc8 13.Nc3 b4 14.Na4 Nc4 15.f4 g6; 10...Nc6 11.Nc6 Qc6 12.Bd4 Qc2 13.Nc3 Nf6 14.0-0 e6 15.e4 de4; 10...Qc7 11.0-0 Qc2 12.Nd3 Nc4 13.Rc1 Qa4 14.Bd4 Nf6 15.Nc3 Qc6; 10...Rb8 11.0-0 Nf6 12.f4 Rc8 13.Nc3 b5 14.Qd3 b4 15.Na4 Ne4) 11.Nd3 Nc4 12.Nc3 f5 13.0-0 Nf6 14.Rab1 Rc8 15.Ba1 b6; D) 10.a4 Nc6 (10...Nh6 11.0-0 f6 12.Nd3 Nc4 13.Nc3 e6 14.a5 Be7 15.e4 0-0; 10...Nf6 11.0-0 Rc8 12.Na3 Nc6 13.Nd3 g6 14.Bf6 Qf6 15.c4 e6; 10...h5 11.f4 Nc6 12.0-0 Nf6 13.Bd4 h4 14.Nc3 h3 15.g3 Nd7; 10...Rc8 11.Qg4 Rc7 12.Na3 Nf6 13.Qf4 e6 14.Bc3 Nc6 15.0-0 Be7; 10...Rb8 11.f4 Nf6 12.0-0 Rc8 13.Ba3 Qc7 14.Nc3 Nc4 15.Nc4 Qc4; 10...e6 11.Nf7 Kf7 12.Qh5 g6 13.Qf3 Ke8 14.Bh8 Ne7 15.Nc3 Nec6; 10...Qc7 11.Na3 Nc6 12.f4 Nf6 13.0-0 e6 14.c4 Be7 15.cd5 ed5) 11.f4 Nf6 12.0-0 h5 13.Bd4 Nd4 14.ed4 h4 15.Nc3 h3; E) 10.Na3 Nc6 (10...Nf6 11.0-0 g6 12.c4 Bg7 13.cd5 Qd5 14.d3 0-0 15.e4 Qd6; 10...e6 11.0-0 Nf6 12.c4 Qc7 13.d4 Ba3 14.Ba3 Nc4 15.Rfc1 Qa5; 10...g6 11.Qg4 b5 12.Nf7 Kf7 13.Bh8 Qa3 14.Qf3 Ke6 15.Qh3 Kd6; 10...h5 11.0-0 Nf6 12.Rab1 Nc6 13.Nc6 Qc6 14.c4 Qd6 15.f3 Rc8; 10...Nh6 11.0-0 Nc6 12.Nc6 bc6 13.Rab1 Qg6 14.c4 Nf5 15.g3 e6) 11.Nc6 Qc6 12.0-0 b5 13.e4 de4 14.c4 b4 15.Nc2 Rc8; F) 10.Bd4 Nc6 (10...Nf6 11.Nc3 Nc6 12.Nc6 bc6 13.Bf6 gf6 14.Rb1 f5 15.Qd3 Rg8) 11.Nc6 bc6 12.f4 Nf6 13.0-0 Nd7 14.a4 c5 15.Bc3 Rb8; G) 10.h3 Nf6 (10...Nh6 11.0-0 f6 12.Nd3 Nc4 13.Nc3 Nf5 14.e4 Nd4 15.Qh5 g6; 10...Rb8 11.0-0 Nf6 12.f4 b5 13.d3 Rc8 14.a3 g6 15.Bc3 Nc6; 10...b5 11.a4 b4 12.0-0 Nf6 13.d4 Qc7 14.Ra2 Ne4 15.Nd2 Qc2; 10...Qc7 11.0-0 Nf6 12.Nd3 e6 13.Be5 Bd6 14.Bd6 Qd6 15.Nc3 0-0; 10...Nc6 11.Nc6 Qc6 12.Bd4 Qc2 13.Nc3 e6 14.Rb1 b5 15.0-0 Nf6) 11.0-0 Rc8 12.Na3 Nc6 13.Nc6 Rc6 14.c4 e6 15.Rac1 Qb4; H) 10.d3 Nh6 (10...Nc6 11.Nc6 bc6 12.Nc3 Nf6 13.0-0 Qc7 14.e4 d4 15.Nd1 e5; 10...Nf6 11.0-0 Nc6 12.Nc6 Qc6 13.Bd4 e6 14.Nd2 Be7 15.Rac1 Rc8; 10...h5 11.f4 Nf6 12.0-0 h4 13.Ba3 Qc7 14.Nd2 h3 15.g3 Qc2; 10...Qc7 11.Bd4 Nc6 12.Nc6 bc6 13.f4 Nf6 14.Nc3 e6 15.0-0 Be7) 11.Nd2 f6 12.Nef3 Rc8 13.c3 Kf7 14.0-0 e5 15.e4 Nc6; I) 10.f4 Nc6 (10...Rc8 11.Ba3 Qd8 12.Nc3 Nc4 13.Nc4 Rc4 14.e4 Nf6 15.ed5 b5; 10...Nf6 11.Ba3 Qe6 12.Nc3 Nd7 13.Nd7 Qd7 14.0-0 e6 15.Bf8 Rf8; 10...Nh6 11.Ba3 Qe6 12.0-0 Nc6 13.Nf3 b5 14.Bc5 Qf5 15.Nc3 e6; 10...b5 11.Bd4 Rc8 12.Nc3 Nf6 13.Nd3 Nc4 14.0-0 Ne4 15.Ne4 de4; 10...Qc7 11.Nc3 Nf6 12.Ba3 Nc6 13.Rb1 e6 14.Bf8 Rf8 15.0-0 0-0-0; 10...Qc5 11.Ba3 Qc7 12.Nc3 Nf6 13.0-0 e6 14.Bf8 Rf8 15.Rab1 Nc6) 11.0-0 Nf6 12.Nd3 d4 13.Na3 Qd5 14.Rfe1 de3 15.de3 0-0-0.

9.Qe2 Nc6 A) 10.Nd3 Nf6 (10...h5 11.0-0 Nf6 12.Ba3 Qc7 13.Nc3 d4 14.Nb5 Qa5 15.Rfb1 a6; 10...a6 11.0-0 Nf6 12.Nc3 h5 13.h3 e6 14.Rab1 h4 15.Rfe1 Qc7; 10...Nb4 11.Nb4 Qb4 12.Bd4 Nf6 13.Nc3 Qc4 14.Rb1 b6 15.d3 Qc6; 10...e6 11.Nc3 Nf6 12.0-0 Be7 13.Nb5 Qd7 14.Ne5 Ne5 15.Be5 0-0; 10...Qd7 11.Nc3 Nf6 12.0-0 e6 13.f4 h5 14.Nb5 Be7 15.Ne5 Ne5; 10...Rc8 11.Nc3 Nf6 12.Nb5 Qd7 13.0-0 e6 14.f4 a6 15.Nc3 Bd6; 10...h6 11.Nc3 a6 12.0-0 Nf6 13.Na4 b5 14.Nac5 Ne4 15.Nb3 Qg6; 10...Rd8 11.0-0 Nf6 12.Nc3 a6 13.Na4 Qc7 14.Bf6 gf6 15.Qh5 Ne5; 10...Nh6 11.Nc3 a6 12.0-0 Nf5 13.Na4 e6 14.g4 Nh4 15.f4 h5; 10...e5 11.Nc3 a6 12.0-0 Nf6 13.Na4 Be7 14.Nb6 Rd8 15.Rab1 0-0; 10...Rb8 11.Nc3 a6 12.0-0 Nf6 13.a4 d4 14.Nd1 e6 15.ed4 Nd4; 10...Qg6 11.0-0 Nf6 12.Nc3 0-0-0 13.Nb5 e6 14.f3 a6 15.Nd4 Nd4) 11.0-0 a6 12.Ba3 Qc7 13.Nc3 d4 14.ed4 Nd4 15.Qd1 e6; B) 10.Nc6 bc6 (10...Qc6 11.Bd4 Nf6 12.Nc3 e6 13.0-0 Be7 14.Rab1 0-0 15.f4 b6) 11.Nc3 Nf6 12.0-0 h5 13.Rab1 e6 14.h3 Rd8 15.e4 de4; C) 10.Qb5 Nf6 (10...Nh6 11.Na3 Rb8 12.Qa4 Qb4 13.Qb3 f6 14.Nd3 Qb3 15.ab3 e6; 10...Rb8 11.Nd3 a6 12.Qa4 Qd7 13.Qf4 Nf6 14.Nc3 e6 15.0-0 Qd6; 10...Rd8 11.Nd3 Nf6 12.Nc3 d4 13.Ne2 de3 14.fe3 Qd5 15.Qd5 Rd5) 11.0-0 Qb4 12.Qb4 Nb4 13.Nc3 Rc8 14.Nb5 a6 15.Nd4 Nd7; D) 10.f4 Nf6 (10...a6 11.0-0 Nf6 12.Nd3 d4 13.Na3 Qd5 14.Rfe1 de3 15.de3 0-0-0; 10...Rc8 11.0-0 Nf6 12.Nd3 d4 13.e4 Qe6 14.e5 Qg4 15.Rf3 Nd5; 10...Rd8 11.Nc3 a6 12.0-0 Nf6 13.Nd3 h5 14.Rab1 h4 15.Nd1 h3; 10...Nh6 11.0-0 Nf5 12.Ba3 Qe6 13.Nc3 Ne5 14.fe5 0-0-0 15.Bc5 Qe5) 11.0-0 h5 12.Ba3 Qe6 13.d4 Ng4 14.Nd2 Nce5 15.fe5 Qa6.

9.Qe2 Nf6 A) 10.0-0 Rc8 (10...Nc6 11.Nd3 h5 12.Nc3 a6 13.a4 e6 14.Ba3 Qc7 15.Bf8 Kf8; 10...Qc7 11.Na3 a6 12.Qd3 e6 13.Rab1 Bd6 14.f4 0-0 15.c4 Qc5; 10...a6 11.f4 Nc6 12.Nd3 d4 13.Na3 Qd5 14.Rfe1 de3 15.de3 0-0-0; 10...Nd7 11.f4 a6 12.a4 Rc8 13.Na3 h5 14.Bd4 Nc6 15.Nc6 Qc6; 10...Rd8 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 e6 14.Rab1 Bd6 15.Ba7 0-0; 10...h6 11.f4 Nc6 12.Nc3 a6 13.Nd3 b5 14.Rab1 d4 15.Nd1 e6; 10...g6 11.f4 Nc6 12.Ba3 Qe6 13.Nc3 0-0-0 14.Nc6 Qc6 15.Nb5 Qc4; 10...h5 11.Qb5 Nc6 12.Nc3 Rb8 13.Nd3 d4 14.ed4 a6 15.Qa4 Ng4; 10...g5 11.Qb5 Nc6 12.Nc3 Rd8 13.Nd3 Bg7 14.f4 gf4 15.Rf4 Bh6) 11.Na3 a6 12.f3 b5 13.Nd3 h5 14.Qf2 Nc6 15.e4 Nb4; B) 10.Qb5 Nc6 11.Nc3 Rb8 12.Nd3 a6 13.Qa4 e5 14.0-0 Be7 15.f4 e4; C) 10.Na3 a6 (10...Nc6 11.Nb5 Qb8 12.Nf3 a6 13.Nc3 e6 14.0-0 Be7 15.Na4 b5; 10...Rc8 11.Nb5 Qb8 12.Bd4 a6 13.Nc3 e6 14.0-0 Bd6 15.f4 0-0) 11.0-0 g6 12.c4 Bg7 13.cd5 Qd5 14.Nac4 Nc4 15.Nc4 Qe6; D) 10.f4 Nc6 (10...Qa6 11.Qa6 ba6 12.Bd4 e6 13.Nc3 Bd6 14.Rb1 0-0 15.Kf2 Rfc8; 10...Rd8 11.0-0 Nc6 12.Nc3 a6 13.Na4 b5 14.Nb6 Na5 15.Bd4 Rb8; 10...g6 11.0-0 Nc6 12.Ba3 Qe6 13.Nc3 0-0-0 14.Bc5 Ne5 15.fe5 Ne4; 10...a6 11.Ba3 Qc7 12.Nc3 Nc6 13.Rb1 e6 14.Bf8 Rf8 15.0-0 0-0-0; 10...Qc7 11.Nc3 Nc6 12.0-0 a6 13.Na4 b5 14.Nc3 Ne5 15.fe5 Qe5; 10...Nd7 11.0-0 a6 12.a4 Rc8 13.Na3 Nf6 14.Bd4 Nc6 15.Rfb1 Qc7; 10...Nc4 11.Nc4 dc4 12.Qc4 Rd8 13.Bd4 Qd5 14.Qe2 Qf5 15.Nc3 Qc2; 10...Rc8 11.Qb5 Nc6 12.Ba3 Qc7 13.Nc3 a6 14.Qa4 e6 15.Bf8 Kf8) 11.0-0 h5 12.Nc3 a6 13.Rab1 h4 14.Nc6 Qc6 15.Rf3 h3.

9.Qe2 Nh6 A) 10.0-0 a6 (10...f6 11.Qb5 Nc6 12.Nd3 e6 13.Nc3 Nf5 14.Ba3 Qc7 15.Bf8 Kf8; 10...e6 11.Qh5 Nc6 12.f4 0-0-0 13.Nc3 Ne5 14.fe5 Qb4 15.Rab1 Bc5; 10...Nc6 11.Nd3 Nf5 12.Nc3 a6 13.Rfe1 e6 14.e4 Nfd4 15.Qd1 0-0-0; 10...Rc8 11.Na3 a6 12.Nd3 e6 13.e4 de4 14.Qe4 Qc6 15.Qf4 Nc4; 10...Rd8 11.f4 f6 12.Qb5 Nc6 13.Nd3 a6 14.Qb6 Nf5 15.Ba3 Qb8; 10...0-0-0 11.Na3 f6 12.Nd3 e5 13.Rab1 Qd7 14.Bc3 Nc6 15.Nb4 a6) 11.Bd4 Nc6 12.Nc6 bc6 13.f4 f6 14.d3 c5 15.Bc3 d4; B) 10.Na3 a6 (10...Nc6 11.Nb5 Qb8 12.Nd3 a6 13.Nd4 Qc7 14.0-0 Nd4 15.Bd4 Nf5; 10...f6 11.Qb5 Nc6 12.Qb7 Rb8 13.Qc6 Qc6 14.Nc6 Rb2 15.0-0-0 Ra2; 10...Rc8 11.Qb5 Nc6 12.c4 Rd8 13.c5 Qc7 14.Qa4 a6 15.0-0 f6) 11.0-0 Nc6 12.Nc6 Qc6 13.c4 Rd8 14.Rfc1 Nf5 15.d4 e6; C) 10.Qb5 Nc6 11.Na3 Rb8 12.0-0 a6 13.Qa4 b5 14.Qf4 Rc8 15.Nd3 Qf4; D) 10.Nc3 a6 (10...Nc6 11.Nb5 Qb8 12.Nd3 a6 13.Nd4 Nd4 14.Bd4 Qc7 15.0-0 Nf5) 11.f4 Nc6 12.Nd3 e6 13.0-0 Nf5 14.g4 Nh4 15.f5 ef5; E) 10.f4 f6 (10...0-0-0 11.Ba3 Qf6 12.Nc3 Nc6 13.Nc6 Qc6 14.Nb5 Kb8 15.Bb2 f6; 10...a6 11.Ba3 Qe6 12.Nc3 f6 13.Bb4 fe5 14.Ba5 ef4 15.ef4 Qe2) 11.Qb5 Nc6 12.Qb7 Rb8 13.Qc6 Qc6 14.Nc6 Rb2 15.Nc3 e6.

9.Qf3 Nf6 A) 10.a4 Rc8 (10...Nc6 11.Nc6 Qc6 12.Bf6 Qf6 13.Nc3 e6 14.Qe2 0-0-0 15.0-0 Bb4) 11.Na3 Qb4 12.Bd4 Nc6 13.Nc6 Rc6 14.0-0 Qd2 15.Rfb1 e5; B) 10.0-0 Rc8 (10...e6 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 Be7 14.Rab1 0-0 15.h3 h6; 10...h5 11.Na3 a6 12.Rac1 Nc6 13.Nc6 bc6 14.Rb1 e5 15.c4 e4; 10...a6 11.Bd4 Nc6 12.Qf4 Rb8 13.Nc3 Rc8 14.Rab1 b5 15.Rfe1 e6; 10...Nc6 11.Nc6 Qc6 12.Bd4 Qd6 13.Bf6 Qf6 14.Qd5 Qb2 15.Nc3 Rd8; 10...h6 11.Rd1 e6 12.Bd4 Nc6 13.Nc6 Qc6 14.Nc3 Be7 15.Rab1 0-0) 11.Na3 e6 12.Rab1 Qb4 13.Nd3 Qe4 14.Qd1 Ba3 15.Ba3 Qa4; C) 10.h3 Nc6 (10...g6 11.0-0 Bg7 12.Bd4 Nc6 13.Nc6 bc6 14.Nc3 e5 15.Qe2 ed4; 10...Rc8 11.Na3 Nc6 12.Nc6 bc6 13.Rb1 Ne4 14.Bc1 Nf6 15.Rb7 Rb8; 10...h5 11.0-0 Nc6 12.Nc6 bc6 13.Ba3 Qc7 14.Nc3 Rh6 15.Rab1 e6; 10...e6 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 Be7 14.0-0 0-0 15.Rab1 h6; 10...a6 11.0-0 Rc8 12.Rc1 h6 13.d3 Nc6 14.Nc6 bc6 15.Nd2 e6; 10...Qc5 11.Nc3 Nc4 12.Nc4 Qc4 13.d3 Qb4 14.Rb1 Rc8 15.Ba1 Qa5; 10...h6 11.0-0 Rc8 12.Na3 Qb4 13.Nd3 Qe4 14.Qe2 Qa4 15.Rfc1 e6; 10...Qc7 11.Na3 a6 12.Nd3 Ne4 13.c4 Qd6 14.Rc1 Rc8 15.Ke2 dc4; 10...Rb8 11.Na3 b5 12.Qe2 a6 13.0-0 b4 14.Nb1 Rc8 15.Rc1 g6) 11.Nc6 Qc6 12.Bf6 Qf6 13.Nc3 Qf3 14.gf3 e6 15.Rb1 0-0-0; D) 10.Na3 Qb4 (10...Rc8 11.Rb1 a6 12.0-0 Nc6 13.Nc6 Rc6 14.Qe2 e6 15.Qd3 Qd7; 10...Qa6 11.Qe2 Rc8 12.Nb5 e6 13.0-0 Be7 14.a4 0-0 15.d3 Nc6; 10...a6 11.0-0 h5 12.Rad1 Nc6 13.Nc6 bc6 14.Rb1 e5 15.c4 e4; 10...h6 11.Nb5 Qc5 12.a4 Rc8 13.Nd3 Qb6 14.Bd4 Qd8 15.Bc3 a6; 10...h5 11.Nb5 Qc5 12.Qe2 Nc4 13.Nc4 dc4 14.a4 a6 15.Nd4 Qd5; 10...Qc5 11.Nd3 Qc6 12.0-0 Ne4 13.Qe2 Nc4 14.Nc4 Qc4 15.f3 Nc5; 10...e6 11.Nb5 Qb6 12.a4 a6 13.Bd4 Bc5 14.Qg3 Bd4 15.Nd4 0-0) 11.Rb1 Qa4 12.Qf4 Qf4 13.ef4 e6 14.Nb5 Rc8 15.Bc3 Nc6; E) 10.h4 Rc8 (10...Nc6 11.Nc6 bc6 12.Nc3 g6 13.a4 Rb8 14.Ba3 Qc7 15.0-0 Bg7; 10...h5 11.Na3 a6 12.Qf4 Nc6 13.Nc6 Qf4 14.ef4 bc6 15.Rh3 e6; 10...e6 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 Be7 14.0-0 0-0 15.Rab1 h6; 10...Qc5 11.Nc3 Nc4 12.Nc4 Qc4 13.h5 h6 14.Qg3 Rc8 15.Rh4 Qc7; 10...a6 11.0-0 Rc8 12.Na3 Nc6 13.Nc6 Rc6 14.Qh3 h5 15.Rfe1 e6; 10...Qc7 11.Na3 a6 12.Qf4 e6 13.0-0 Nc6 14.Nc6 Qc6 15.f3 Rg8; 10...Rd8 11.Na3 a6 12.0-0 b5 13.d4 g6 14.Nb1 Rc8 15.c3 Nc6; 10...h6 11.Na3 a6 12.0-0 Nc6 13.Nc6 Qc6 14.Bf6 ef6 15.Nb1 Rd8; 10...Rb8 11.Na3 b5 12.Qe2 a6 13.0-0 b4 14.Nb1 Rc8 15.d3 Nc6) 11.Na3 Qb4 12.Nd3 Qe4 13.Ke2 Qf3 14.gf3 e6 15.Rag1 h5; F) 10.g3 Rc8 (10...Nc6 11.Nc6 Qc6 12.Bf6 Qf6 13.Qf6 ef6 14.Nc3 0-0-0 15.Ke2 Bc5; 10...h5 11.Na3 a6 12.0-0 h4 13.d3 hg3 14.fg3 Nc6 15.Nc6 Qc6; 10...Qc7 11.Na3 a6 12.Rb1 e6 13.Qf4 b5 14.Nd3 Qf4 15.ef4 d4) 11.Na3 e6 12.0-0 Qb4 13.Nd3 Qe4 14.Qd1 Qa4 15.c3 Qd1; G) 10.Ke2 Rc8 (10...h5 11.Nd3 Nc4 12.Bf6 Qf6 13.Qd5 Qa1 14.Qc4 a6 15.Qc7 Qf6; 10...Rg8 11.Na3 Qa6 12.Ke1 Rc8 13.Qe2 Qe2 14.Ke2 e6 15.Rac1 Ba3; 10...e6 11.Bd4 Qa6 12.Ke1 Nc6 13.Nc6 Qc6 14.Nc3 Be7 15.Rb1 0-0; 10...Nc6 11.Nc6 Qc6 12.Bf6 ef6 13.Nc3 Qc4 14.Ke1 0-0-0 15.a4 d4; 10...h6 11.Nd3 Nc4 12.Bf6 Qf6 13.Qd5 Qa1 14.Qc4 a6 15.Qd5 Rd8; 10...a6 11.Bd4 Nc6 12.Nc6 bc6 13.Qg3 Qg3 14.hg3 Nd7 15.f4 Rc8; 10...g6 11.Bd4 Nc6 12.Nc6 bc6 13.Bf6 Qf6 14.Qf6 ef6 15.Nc3 Bb4; 10...Rb8 11.Nd3 Nc4 12.Bf6 Qf6 13.Qd5 Qa1 14.Qc4 Qf6 15.Nc3 Qc6) 11.Na3 Qa6 12.d3 e6 13.Rac1 Bd6 14.Rhd1 0-0 15.Kf1 Qb6; H) 10.Qe2 Nc6 (10...Nd7 11.Nd7 Qd7 12.Na3 e5 13.0-0 Ba3 14.Ba3 Nc4 15.Qd3 Qa4; 10...Rc8 11.Qb5 Nc6 12.Qb7 Rb8 13.Qc6 Qc6 14.Nc6 Rb2 15.Nc3 e6) 11.Nc6 Qc6 12.Nc3 e6 13.0-0 Be7 14.Nb5 0-0 15.Nd4 Qa4.

9.f4 Qa6 A) 10.Qe2 Qe2 (10...Nf6 11.Qa6 ba6 12.Bd4 e6 13.Nc3 Bd6 14.Rb1 0-0 15.Kf2 Rfc8; 10...e6 11.Qa6 ba6 12.Bd4 Ne7 13.Nc3 Nf5 14.Rb1 f6 15.Nd3 Kf7; 10...Nc4 11.Bd4 Ne5 12.fe5 Nh6 13.Nc3 e6 14.Qa6 ba6 15.Rb1 Kd7) 11.Ke2 Nf6 12.Bd4 e6 13.Nc3 a6 14.Rhb1 Bd6 15.Kf3 b5; B) 10.a4 Nc4 (10...Nf6 11.Na3 Rc8 12.Nb5 e6 13.0-0 Be7 14.d3 0-0 15.Rf3 Nc6; 10...Nh6 11.Na3 Rc8 12.Nb5 f6 13.Qh5 g6 14.Qh3 e6 15.Nf3 Bg7) 11.Nc4 Qc4 12.d3 Qc6 13.0-0 Nf6 14.Nc3 e6 15.Nb5 Be7; C) 10.Bd4 Nc6 (10...Nf6 11.Nc3 e6 12.Rb1 Nc6 13.Nb5 Rc8 14.Nc6 bc6 15.Nc3 Bd6; 10...e6 11.Qh5 Nh6 12.Nc3 Nc6 13.Nc6 bc6 14.g4 Rb8 15.Kf2 c5) 11.Nc6 Qc6 12.Nc3 e6 13.f5 Nf6 14.0-0 Be7 15.Qe2 0-0; D) 10.Kf2 Nc6 (10...Nf6 11.Nc3 Nc4 12.Nc4 Qc4 13.Qf3 Rc8 14.Rhd1 e6 15.Kg1 Be7; 10...h5 11.Nc3 Nf6 12.Qf1 Qf1 13.Raf1 e6 14.Rc1 Bc5 15.Kf3 Ke7; 10...e6 11.Bd4 Nf6 12.Nc3 Be7 13.Qe2 Qe2 14.Ke2 Nc4 15.Rab1 b6; 10...Nc4 11.Nc4 Qc4 12.d3 Qc6 13.Nd2 Nh6 14.c4 Rd8 15.Rc1 Nf5; 10...Rd8 11.Bd4 Nf6 12.Nc3 Nc6 13.Rb1 Nd4 14.ed4 e6 15.Qf1 Qf1) 11.Qh5 g6 12.Qf3 Nf6 13.Nc6 bc6 14.Bf6 ef6 15.Nc3 Bb4; E) 10.Nc3 Nf6 (10...Nc4 11.Nd5 0-0-0 12.Nc4 Qc4 13.Nc3 Nf6 14.Qe2 Qe2 15.Ke2 e6; 10...e6 11.Qh5 g6 12.Qh3 Nf6 13.d3 Qb6 14.Rb1 d4 15.ed4 Bb4) 11.a4 Rc8 12.Nb5 e6 13.0-0 Be7 14.d3 0-0 15.Rf3 Nc6; F) 10.Qf3 Nf6 (10...e6 11.Nc3 Nf6 12.a4 Nc4 13.Nb5 Rc8 14.Nc4 Rc4 15.Qe2 Kd7) 11.Bd4 e6 12.Nc3 Bd6 13.Qg3 0-0 14.d3 Bb4 15.a3 Bc3; G) 10.Qh5 g6 11.Qe2 Bg7 12.Nc3 Qe2 13.Ke2 Nf6 14.Rab1 Rc8 15.g4 h6; H) 10.Na3 Nf6 (10...e6 11.Qe2 Qe2 12.Ke2 Ba3 13.Ba3 Nf6 14.Bb4 Nc4 15.Rab1 Rc8; 10...Nc6 11.Qe2 Qe2 12.Ke2 Rc8 13.c4 e6 14.cd5 Ba3 15.Ba3 ed5; 10...Nh6 11.Qe2 Qe2 12.Ke2 f6 13.Nb5 Rc8 14.Nd3 a6 15.Nd4 Nc4; 10...h5 11.Qe2 Nf6 12.Nb5 Rc8 13.0-0 h4 14.Bc3 h3 15.gh3 Rh3) 11.Qe2 Qe2 12.Ke2 Rc8 13.Nb5 Nc6 14.c4 dc4 15.Nc4 Nd5; I) 10.d3 Nc6 (10...Nf6 11.Nd2 Nc6 12.Ndf3 e6 13.0-0 Bc5 14.Bd4 Bd4 15.ed4 0-0; 10...e6 11.c4 Ne7 12.Nd2 Nac6 13.Qe2 Ne5 14.Be5 f6 15.Bd4 Nf5; 10...Nh6 11.Nc3 0-0-0 12.0-0 f6 13.Nf3 Nf5 14.Qe1 e6 15.Nd4 Bb4; 10...Rd8 11.0-0 Nf6 12.Nd2 Nc6 13.Ndf3 h6 14.f5 Rc8 15.Qd2 Qa4; 10...h6 11.c4 dc4 12.dc4 Qd6 13.Qh5 Qe6 14.Nf7 Qf7 15.Qb5 Kd8) 11.Nc3 Nf6 12.Kf2 e6 13.a4 Bc5 14.Nb5 Qb6 15.Re1 h5.

9.f4 Nc4 10.Bd4 (10.Nc4 dc4 11.Be5 Qc6 12.0-0 e6 13.d3 Rd8 14.Qe2 f6 15.Bd4 cd3) 10...Ne5 (10...Qa6 11.0-0 e6 12.Nc3 Nh6 13.Rb1 Nf5 14.Nb5 Bd6 15.Nc4 dc4; 10...Rc8 11.Nc3 Nh6 12.0-0 Nf5 13.Nb5 Qa6 14.Rb1 Nd4 15.ed4 g6; 10...e6 11.Nc3 Ne5 12.fe5 Qc6 13.0-0 Nh6 14.Qf3 Be7 15.Rab1 0-0; 10...h5 11.Nc3 Nf6 12.Rb1 b6 13.Nb5 Qd8 14.Nc4 dc4 15.Qf3 Rc8; 10...Qc7 11.Nc3 Nf6 12.Qe2 Rc8 13.0-0 e6 14.Rab1 b6 15.Nb5 Qb7; 10...h6 11.Nc3 Nf6 12.Rb1 b6 13.Nb5 Qd8 14.Nc4 dc4 15.Qf3 Rc8; 10...Nh6 11.Nc3 Ne5 12.fe5 Qc6 13.0-0 e6 14.Rb1 Nf5 15.Qf3 h5) 11.fe5 Qd7 12.0-0 Nh6 13.Qf3 e6 14.Nc3 Nf5 15.Rab1 h5.

9.f4 Nc6 A) 10.0-0 Nf6 (10...Nh6 11.Qe2 Nf5 12.Ba3 Qe6 13.Nc3 0-0-0 14.Bc5 Ne5 15.fe5 Qe5; 10...Rc8 11.Qg4 Qd8 12.Nc6 Rc6 13.Bg7 Nh6 14.Bh6 Bh6 15.Nc3 d4; 10...a6 11.Ba3 Qc7 12.Nc3 Nf6 13.Rb1 e6 14.Bf8 Rf8 15.Qf3 0-0-0) 11.Qe2 Rd8 12.Nc3 a6 13.Nd3 h5 14.a4 h4 15.Rf3 Qc7; B) 10.Qe2 Rd8 (10...a6 11.0-0 Nf6 12.Nd3 d4 13.Na3 Qd5 14.Rfe1 de3 15.de3 0-0-0; 10...Nf6 11.0-0 h5 12.Ba3 Qe6 13.d4 Ng4 14.Nc3 0-0-0 15.f5 Qf6; 10...Rc8 11.Ba3 Qc7 12.Nc3 Nf6 13.0-0 Ne5 14.fe5 Qe5 15.Qb5 Kd8; 10...Nh6 11.0-0 Nf5 12.g4 Nh4 13.Qb5 f6 14.Qb7 Rb8 15.Qc6 Qc6; 10...Qc7 11.Nd3 Nf6 12.0-0 e6 13.Nc3 a6 14.Rf3 Be7 15.Rg3 0-0) 11.Nc3 a6 12.0-0 Nf6 13.Nd3 h5 14.Rae1 h4 15.h3 d4; C) 10.Nc6 Qc6 11.0-0 Nf6 12.Nc3 e6 13.f5 Bd6 14.a4 Be5 15.Qf3 Rc8; D) 10.a4 d4 (10...a6 11.0-0 Nf6 12.Ba3 Qe6 13.Nc6 Qc6 14.Nc3 g6 15.Qb1 Rd8; 10...Nf6 11.0-0 a6 12.Ba3 Qc7 13.Nc6 Qc6 14.Nc3 g6 15.Qb1 Rd8; 10...Nh6 11.0-0 Rc8 12.Na3 Ne5 13.fe5 Qd7 14.Nb5 Qg4 15.Qb1 Rc4; 10...Rc8 11.Na3 Ne5 12.fe5 Qb4 13.Bd4 Qa4 14.Qb1 e6 15.Qb7 Qc6; 10...Rd8 11.0-0 Nf6 12.Nc3 a6 13.Ba3 Qc7 14.Rb1 e6 15.Bf8 Rf8; 10...Qb4 11.Nd3 Qc4 12.Nc3 Nf6 13.0-0 h5 14.a5 Ne4 15.Ne4 de4; 10...Rb8 11.Nc6 Qc6 12.0-0 Rc8 13.Nc3 Nf6 14.Nb5 Qc2 15.Rc1 Qf5) 11.ed4 Nd4 12.Na3 Nf6 13.Nac4 Qd5 14.0-0 Nf5 15.d4 0-0-0; E) 10.Bd4 Nd4 (10...Nf6 11.0-0 Nd4 12.ed4 Rc8 13.Nc3 Qb6 14.Ne2 Ne4 15.c4 Rc4; 10...Nh6 11.Nc6 Qc6 12.Nc3 Nf5 13.0-0 Nd4 14.ed4 g6 15.Qf3 Bg7; 10...e6 11.Nc3 Nd4 12.ed4 Qa6 13.Qh5 Nh6 14.Kf2 Bd6 15.Rab1 0-0; 10...h5 11.Nc3 Nf6 12.Nb5 Qd8 13.0-0 Ne4 14.Qe2 Qa5 15.Bc3 Nc3; 10...Qe6 11.0-0 Nf6 12.Nc3 Nd4 13.ed4 Qb6 14.Ne2 Qa6 15.Re1 e6) 11.ed4 Nf6 12.Nc3 Qb6 13.Qe2 a6 14.Qd3 e6 15.0-0 Bb4; F) 10.Nd3 d4 11.0-0 de3 12.de3 0-0-0 13.Nc3 Nf6 14.Qf3 Qd7 15.Ne5 Ne5; G) 10.Na3 Qc5 (10...a6 11.0-0 b5 12.Qh5 g6 13.Qf3 Nf6 14.c4 bc4 15.Nac4 dc4; 10...Ne5 11.fe5 Qa6 12.Qe2 Qe2 13.Ke2 Nh6 14.c4 e6 15.cd5 Ba3) 11.Qh5 Nh6 12.0-0 Ne5 13.fe5 e6 14.Qe2 Be7 15.Rac1 Qb4.

9.f4 e6 A) 10.Ba3 Qa6 (10...Qc7 11.Bf8 Kf8 12.Nc3 Nf6 13.0-0 g6 14.Qf3 Kg7 15.Rab1 b6; 10...Qd8 11.0-0 Nf6 12.Bf8 Rf8 13.Qe2 Nd7 14.Nd3 Nc4 15.Nc3 Qc7) 11.Bf8 Kf8 12.Nc3 Nf6 13.Qb1 Nc6 14.Nc6 bc6 15.Qb4 Kg8; B) 10.Bd4 Qa6 (10...Nf6 11.Nc3 Qa6 12.Rb1 Nc6 13.Qe2 Nb4 14.Qa6 ba6 15.Rb2 Rc8; 10...Nc6 11.Nc3 Nd4 12.ed4 Qa6 13.Qe2 Qe2 14.Ke2 f6 15.Nd3 Nh6; 10...Nh6 11.Nc3 Qa6 12.Rb1 Nc6 13.Qe2 Nd4 14.ed4 Nf5 15.Qa6 ba6) 11.Nc3 Nf6 12.Rb1 Nc6 13.Qe2 Nd4 14.ed4 Qe2 15.Ke2 b6; C) 10.Nc3 Nf6 (10...Qa6 11.Qh5 g6 12.Qh3 Nf6 13.a4 Rc8 14.Nb5 Rg8 15.0-0 Be7; 10...a6 11.0-0 Nf6 12.Qf3 Nc6 13.Nc6 Qc6 14.f5 Be7 15.a4 0-0; 10...Qb4 11.Rb1 Nf6 12.0-0 Be7 13.Ba1 Qc5 14.Nb5 Qc8 15.Nd4 0-0) 11.a4 Qb6 12.Rb1 Nc4 13.Nc4 dc4 14.0-0 Qc6 15.Nb5 Be7; D) 10.a4 Nf6 (10...Nc4 11.Nc4 dc4 12.Qe2 Rc8 13.0-0 Qd7 14.Bd4 Nf6 15.Nc3 Bb4; 10...Qb6 11.Bd4 Bc5 12.Bc5 Qc5 13.Nc3 Nf6 14.Rb1 Rb8 15.0-0 Nc4; 10...Rc8 11.Nc3 Nf6 12.0-0 Qa6 13.f5 Be7 14.Nb5 0-0 15.d3 Nc6; 10...Qc7 11.Nc3 a6 12.0-0 Nf6 13.Rf3 Bd6 14.Rg3 0-0 15.Ba3 Ba3) 11.Nc3 Qb6 12.Rb1 Nc4 13.Nc4 dc4 14.0-0 Qc6 15.f5 Be7; E) 10.Qe2 Qa6 (10...Nh6 11.Nc3 Qa6 12.Nb5 Rc8 13.Bc3 f6 14.Nf3 Nc4 15.Nfd4 Bc5; 10...Qc7 11.0-0 Nf6 12.Bd4 Be7 13.Nc3 0-0 14.Nb5 Qc2 15.Rac1 Qa4; 10...Nc6 11.Nc3 a6 12.0-0 Ne5 13.fe5 Qe5 14.Na4 Qc7 15.Qh5 Nh6; 10...Rc8 11.Qb5 Nc6 12.Qb7 Nge7 13.Ba3 Qc7 14.Qc7 Rc7 15.Bd6 Rb7) 11.Qa6 ba6 12.Ke2 f6 13.Nd3 Nh6 14.Nc3 Nc4 15.Rab1 Nf5; F) 10.c4 dc4 (10...Ne7 11.Ba3 Qb6 12.Qa4 Nec6 13.cd5 ed5 14.Bf8 Rf8 15.Nc3 Qb4; 10...Nf6 11.Na3 Rc8 12.Rc1 Be7 13.Qa4 Nc6 14.Nb5 Qb4 15.Qb4 Bb4) 11.Qa4 Nc6 12.Na3 Qb4 13.Qb4 Nb4 14.0-0 Nf6 15.Nb5 Rd8; G) 10.Qh5 Qe7 (10...Qc7 11.Nc3 a6 12.0-0 Nf6 13.Qg5 b5 14.a3 h6 15.Qg3 Nc4; 10...Nh6 11.Nc3 Qa6 12.f5 ef5 13.Qh4 Qd6 14.Nb5 Qb8 15.Qd4 Qd8) 11.Qe2 Nc6 12.0-0 Nf6 13.Nc3 Rc8 14.a4 Qd8 15.a5 Bd6.

9.f4 Nf6 A) 10.Qe2 Rc8 (10...Rd8 11.0-0 Nc6 12.Nc3 a6 13.Nd3 h5 14.Rf3 h4 15.Rh3 e6; 10...Nc6 11.0-0 h5 12.Nc3 a6 13.Nf3 e6 14.a4 Qc7 15.Ng5 Nb4; 10...Qa6 11.Qa6 ba6 12.Bd4 e6 13.Nc3 Bd6 14.Rb1 0-0 15.0-0 Rfc8; 10...Nd7 11.0-0 e6 12.Bd4 Qa6 13.Qh5 g6 14.Qf3 Bc5 15.Nc3 Bd4; 10...a6 11.Ba3 Qc7 12.Nc3 Nc6 13.Nc6 Qc6 14.0-0 0-0-0 15.Rab1 Qc4; 10...Qc7 11.0-0 Nc6 12.Nd3 a6 13.Bf6 gf6 14.Nc3 0-0-0 15.Rab1 e6; 10...g6 11.0-0 Nc6 12.Ba3 Qb8 13.Nc3 Ne5 14.fe5 Qe5 15.Qb5 Kd8; 10...h5 11.Qb5 Nc6 12.Nc3 Rd8 13.Qb7 Rb8 14.Qc6 Qc6 15.Nc6 Rb2) 11.Qb5 Nc6 12.Ba3 Qc7 13.Nc3 a6 14.Qa4 e6 15.Bf8 Kf8; B) 10.Na3 Ne4 (10...Qa6 11.Qe2 Rc8 12.Nb5 Ne4 13.a4 h5 14.0-0 Nc6 15.d3 Nd6; 10...a6 11.0-0 Nc6 12.c4 Rd8 13.Nc6 Qc6 14.Rc1 e6 15.cd5 Qd5; 10...e6 11.c4 Rc8 12.Rc1 Be7 13.Qa4 Nc6 14.Nb5 Qb4 15.Qb4 Bb4; 10...Rc8 11.0-0 Qa6 12.Qf3 Nc6 13.Rfe1 e6 14.Qf1 Qf1 15.Rf1 Ne5; 10...Qc5 11.Nd3 Qc6 12.Qe2 Ne4 13.0-0 Qa6 14.Qh5 e6 15.f5 Nd2; 10...Qb4 11.Rb1 Ne4 12.Bc1 Qa4 13.Nb5 Rc8 14.d3 Nd6 15.Qg4 e6) 11.Rb1 a6 12.0-0 Nc6 13.d3 Nc5 14.Qh5 Ne5 15.fe5 Qg6; C) 10.Bd4 Nc6 (10...Qa6 11.Qe2 Qe2 12.Ke2 e6 13.Nc3 a6 14.Kf3 Bd6 15.Rab1 Rc8; 10...Qc7 11.0-0 Nc6 12.Nc3 Nd4 13.ed4 Qb6 14.Ne2 Rc8 15.Rb1 Qa6; 10...e6 11.Nc3 Qa6 12.Rb1 Rc8 13.Nb5 Bc5 14.d3 Bd4 15.Nd4 Nc6; 10...a6 11.Nc3 Nc6 12.0-0 Nd4 13.ed4 Qb4 14.Ne2 Qa4 15.Qb1 b5) 11.0-0 Nd4 12.ed4 e6 13.Nc3 Qb6 14.Ne2 Bd6 15.Rb1 Qa6; D) 10.Nc3 d4 (10...Nc4 11.Rb1 Rc8 12.Nc4 Rc4 13.Nb5 Qd7 14.0-0 a6 15.Nd4 Ra4; 10...Rc8 11.0-0 Nc4 12.Nc4 Rc4 13.Nb5 Qb6 14.Rb1 Qb5 15.Bf6 Qa4; 10...e6 11.0-0 Qa6 12.Qf3 Bd6 13.Qg3 0-0 14.a4 Rac8 15.d3 Bb4) 11.ed4 Qd4 12.Qf3 Rc8 13.0-0-0 Qb6 14.Qd3 Nc6 15.Rde1 e6; E) 10.a4 Nc4 (10...Nc6 11.0-0 Rc8 12.Nc6 Qc6 13.Nc3 Qc4 14.Nb5 Qc5 15.Bf6 gf6; 10...a6 11.0-0 Nc6 12.Ba3 Qe6 13.Nc6 Qc6 14.Nc3 g6 15.Qb1 Rd8; 10...Rc8 11.0-0 Nc6 12.Nc6 Qc6 13.Nc3 Rg8 14.Nb5 Qc5 15.Rc1 a6; 10...e6 11.Nc3 Qb6 12.Rb1 Nc4 13.Nc4 dc4 14.0-0 Qc6 15.Nb5 Be7; 10...Qc7 11.Na3 a6 12.0-0 e6 13.Qe2 Be7 14.Rac1 0-0 15.c4 Qb6; 10...Qa6 11.Na3 Rc8 12.Nb5 e6 13.0-0 Be7 14.d3 0-0 15.Rf3 Nc6; 10...Nd7 11.Na3 a6 12.0-0 Nc6 13.Qh5 g6 14.Qf3 Nf6 15.c4 Rd8; 10...Rd8 11.Nc3 e6 12.Nb5 Qb6 13.0-0 Nc4 14.Bd4 Bc5 15.Bc5 Qc5) 11.Nc4 dc4 12.Qe2 Qc6 13.0-0 e6 14.f5 0-0-0 15.fe6 fe6; F) 10.0-0 Nc6 (10...e6 11.Nc3 Qa6 12.a4 Be7 13.Nb5 Rc8 14.Rf3 Nc4 15.Nc4 Rc4; 10...Qa6 11.Bd4 Nc6 12.Nc6 Qc6 13.f5 g6 14.Nc3 Bg7 15.Qb1 0-0; 10...h5 11.Nc3 a6 12.a4 Nc4 13.Nc4 dc4 14.Ba3 Qc6 15.a5 Rd8; 10...Nc4 11.Bd4 a6 12.d3 Na5 13.Nd2 Nc6 14.Ndf3 Nd7 15.Nc6 Qc6; 10...h6 11.Nc3 Rc8 12.Rb1 a6 13.Ne2 Nc6 14.Bc3 b5 15.Nd4 Nd4; 10...Rc8 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 e6 14.Rb1 Be7 15.Ba7 0-0; 10...g6 11.Nc3 Bg7 12.a4 0-0 13.Nb5 Qd8 14.f5 Nc4 15.Nc4 dc4; 10...Rd8 11.Bd4 Nc6 12.Nc3 Nd4 13.ed4 Qb4 14.Nf3 Qc4 15.Rb1 b6; 10...Qc7 11.Na3 a6 12.Rc1 b5 13.Ng4 Nc6 14.Nf6 gf6 15.Qh5 Rd8; 10...b5 11.Nc3 a6 12.Ne2 g6 13.a4 b4 14.c3 b3 15.Ba3 Qc7; 10...a6 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 e6 14.f5 Be7 15.Rb1 0-0) 11.Qe2 Rc8 12.Nd3 d4 13.e4 Qe6 14.e5 Qg4 15.Rf3 Nd5.

9.Qh5 g6 10.Qe2 (10.Qf3 Nf6 11.Bd4 Nc6 12.Nc6 bc6 13.Nc3 Bg7 14.Qg3 0-0 15.Rb1 Rfb8) 10...Nf6 11.Na3 a6 12.0-0 Bg7 13.f3 0-0 14.Rfb1 b5 15.Nd3 Nc6.

10.Na3 Qa6 (10...a6 11.c4 Nc6 12.d4 e6 13.Qc2 Be7 14.cd5 ed5 15.f3 0-0) 11.f4 e6 12.Rb1 Bd6 13.d3 0-0 14.f5 h5 15.Qf3 Rae8.

10.c4 Nc6 (10...Nc4 11.Qa4 Nd7 12.Nc4 dc4 13.Na3 Rc8 14.Nc4 Qa6 15.Qa6 ba6; 10...Nd7 11.Nd7 Qd7 12.cd5 Qd5 13.Nc3 Qc6 14.d3 Rd8 15.Qe2 h5) 11.Qa4 Rc8 12.Na3 e6 13.cd5 Nd5 14.Nb5 Qb4 15.Qb4 Ndb4.

10.Bd4 Nc6 11.f4 Nd4 12.ed4 e6 13.Qf3 Qa6 14.Nc3 Bd6 15.Rab1 0-0.

10.Qe2 Rc8 (10...Nc6 11.Nd3 g6 12.Nc3 a6 13.Qf3 Rd8 14.Na4 Bg7 15.Nac5 Rb8; 10...a6 11.Bd4 Nc6 12.Nc6 bc6 13.Bf6 gf6 14.Nc3 Bg7 15.Qg4 0-0; 10...Rd8 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 e6 14.Rab1 Bd6 15.Ba7 0-0; 10...Nd7 11.f4 a6 12.Nc3 e6 13.Nd1 Qc7 14.d3 Nf6 15.Nf2 Bc5; 10...h5 11.f4 Nc6 12.Nc3 a6 13.Nf3 e6 14.Rab1 Qc7 15.f5 ef5; 10...g6 11.f4 Nc6 12.Nc3 a6 13.e4 d4 14.Nc4 Qc5 15.Na4 d3; 10...Qc7 11.Nc3 Qe5 12.Qb5 Kd8 13.Qa5 Qc7 14.Qa4 Qc4 15.Qb3 Qb3) 11.Qb5 Nc6 12.Na3 Qb4 13.Nc6 Qb5 14.Nb5 Rc6 15.Rac1 a6.

10.f3 Nc6 (10...Nd7 11.Nd7 Qd7 12.d3 e6 13.Qe1 Nc6 14.Nc3 Bb4 15.a3 Bd6; 10...e6 11.Qe2 Nc6 12.Nd3 Be7 13.Nc3 0-0 14.Nb5 Qd7 15.Bc3 Rac8; 10...a6 11.Qe2 Rc8 12.Na3 h5 13.c4 Nc6 14.Nd3 h4 15.cd5 Qd5; 10...h5 11.Na3 Qa6 12.Rb1 e6 13.Nd3 Ba3 14.Ba3 Nc4 15.Bc5 Rc8; 10...g6 11.Na3 a6 12.c4 Nc6 13.Nc6 bc6 14.Qa4 Qd7 15.Bf6 ef6; 10...Rc8 11.Na3 Qa6 12.Qe1 Nc6 13.Nc6 Qc6 14.Qg3 Qa6 15.Rab1 Kd8; 10...g5 11.Na3 a6 12.c4 Nc6 13.Nc6 bc6 14.Qa4 Qd7 15.Bf6 ef6; 10...b5 11.Bd4 Nc4 12.Nc4 dc4 13.Bf6 gf6 14.Nc3 b4 15.Ne4 Qd5; 10...Rb8 11.Na3 a6 12.Qe2 Nc6 13.Nd3 b5 14.c3 h5 15.Nc2 h4) 11.Nd3 g6 12.Nc3 a6 13.e4 d4 14.Na4 Bg7 15.Nb6 Rd8.

10.Qf3 Rc8 (10...a6 11.Bd4 Nc6 12.Qf4 g6 13.Nc3 Rc8 14.Nc6 Qc6 15.Bf6 ef6; 10...e6 11.Na3 a6 12.Qe2 Nc6 13.f4 Be7 14.c4 0-0 15.Rac1 Qb4; 10...Nc6 11.Nc6 Qc6 12.Nc3 e6 13.Rab1 Be7 14.Nb5 0-0 15.Be5 Nd7; 10...b5 11.Na3 a6 12.Rac1 Rb8 13.Qe2 b4 14.Nb1 Rc8 15.d3 e6; 10...h5 11.Na3 a6 12.Qf4 Nc6 13.Qa4 Rd8 14.f4 Ne4 15.c4 h4; 10...h6 11.Na3 a6 12.c4 Nc6 13.Nc6 bc6 14.cd5 Qd5 15.Qe2 Rd8; 10...Qc7 11.Bd4 Qc2 12.Nc3 Nc6 13.Nd5 Ne5 14.Be5 Rc8 15.Bc3 Rg8) 11.Na3 a6 12.h3 Nc6 13.Nc6 Rc6 14.Rad1 Qb4 15.Rb1 e5.

10.f4 Rc8 (10...Nc6 11.Qe2 Rd8 12.Nc3 a6 13.Nd3 h5 14.a4 h4 15.h3 d4; 10...h5 11.Nc3 Rc8 12.a4 Nc4 13.Nb5 Qb8 14.Nc4 Rc4 15.d3 Rc6; 10...Rd8 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 g6 14.Qb1 Bg7 15.Qb4 a6; 10...Qc7 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 e6 14.Qe2 Be7 15.Rab1 0-0; 10...e6 11.Nc3 Qa6 12.a4 Be7 13.Nb5 Rc8 14.d3 0-0 15.Rf3 Nc6; 10...Qa6 11.Bd4 Nc6 12.Nc6 bc6 13.Nc3 e6 14.Bf6 gf6 15.f5 e5; 10...b5 11.Nc3 a6 12.Qf3 h5 13.Rab1 b4 14.Na4 Rc8 15.Rfc1 Ne4; 10...Nc4 11.Nc4 dc4 12.Be5 Qc6 13.Nc3 e6 14.Qe2 Be7 15.Rf3 0-0; 10...g6 11.c4 dc4 12.Qa4 Nc6 13.Qc4 Qe6 14.Qe6 fe6 15.Nc6 bc6) 11.Bd4 Nc6 12.Nc6 Qc6 13.Nc3 e6 14.Rb1 Be7 15.Ba7 0-0.

6.a4 Qb6 7.Be2 (7.Bd3 Nc4 8.Bc4 dc4 9.Na3 cb5 10.ab5 Ne4) 7...Nc4 8.Bc4 dc4 9.Na3 cb5 10.ab5 Ne4.

6.a4 Bd7 A) 7.Ne5 Bf5 (7...e6 8.Be2 Bd6 9.0-0 0-0 10.f4 Qc7; 7...Qc7 8.Nd7 Nd7 9.Be2 e5 10.0-0 Bd6) 8.g4 Bc8 9.Qf3 g5 10.bc6 bc6; B) 7.Be5 Bg4 (7...e6 8.Nc3 Ng4 9.Bg3 Bb4 10.Be2 Nc4; 7...Ng4 8.Bf4 e6 9.Be2 Bb4 10.c3 Be7; 7...cb5 8.ab5 Nc4 9.Bc4 dc4 10.Nc3 a6) 8.h3 Bh5 9.d4 Nd7 10.Bf4 e6; C) 7.bc6 Nc6 (7...Bc6 8.Bd4 e6 9.Be2 Nd7 10.0-0 Qc7) 8.Bf6 ef6 9.Nc3 Qa5 10.Qb1 Bb4; D) 7.Bd4 e6 (7...Ne4 8.d3 Nf6 9.Nc3 Bg4 10.h3 Bf3; 7...Bg4 8.h3 Bh5 9.g4 Bg6 10.Ne5 Nd7; 7...Bf5 8.Be2 e6 9.Nh4 Bg6 10.0-0 c5) 8.Be2 Bd6 9.0-0 0-0 10.Be5 Qe7.

6.a4 e6 7.Bd3 (7.Be2 Bd6 (7...c5 8.0-0 Bd6 9.Be5 0-0 10.d4 Qc7; 7...a6 8.Be5 Bd6 9.0-0 0-0 10.d4 Ne4) 8.Be5 0-0 9.0-0 a6 10.d4 Ne4; 7.Ne5 Bd6 (7...c5 8.Be2 Bd6 9.0-0 0-0 10.f4 Nd7; 7...Nd7 8.Qh5 Ne5 9.Be5 Bd7 10.Nc3 cb5; 7...Qc7 8.f4 Bd6 9.Be2 0-0 10.0-0 Nd7) 8.Be2 Nd7 9.d4 0-0 10.Bd3 Qc7; 7.Be5 Nd7 (7...Ng4 8.Bc3 Nf6 9.Be2 Bd6 10.0-0 0-0; 7...c5 8.Be2 Nd7 9.Bf4 Be7 10.0-0 0-0; 7...Bd7 8.Nc3 Ng4 9.Bf4 f6 10.bc6 Nc6) 8.Bf4 Bb4 9.c3 Be7 10.Be2 0-0) 7...Bb4 (7...Bd6 8.0-0 c5 9.Ne5 0-0 10.f4 c4; 7...c5 8.0-0 Bd6 9.Be5 0-0 10.Nc3 Be5; 7...Be7 8.0-0 0-0 9.Ne5 Ne4 10.Qh5 f6; 7...Bd7 8.Ne5 Bd6 9.0-0 c5 10.f4 c4) 8.Ne5 (8.0-0 0-0 9.Ne5 Bd6 10.f4 Ne4) 8...0-0 9.Qf3 (9.0-0 Qd6= (9...Bd6 10.f4 Ne4) 10.bc6 bc6) 9...a6 (9...Bd6 10.Qg3= Ne4) 10.0-0 (10.Ng4 Ne4+=) 10...ab5 (10...Bd6 11.Qg3=) 11.ab5 c5?? (better is 11...Bd6=) 12.c3+- Nc4 13.cb4 (13.Ra8?! Ne5 14.Qe2 Nd3 15.Qd3 c4+-) 13...Ra1 (13...Ne5 14.Be5 Ra1 15.Ba1+-) 14.Ba1 Ne5 15.Be5 c4 16.Bc2 Qe7 (16...Nd7 17.Bd6 Re8 18.d4+-) 17.Qh3 (17.d3 Nd7 18.Bc3 cd3 19.Bd3 f6+-) 17...g6 (17...h6 18.Qh4+-) 18.Qh4 Bd7 (18...Kg7+-) 19.Bf6 Qb4 20.Qh6 1–0. marre – oppo, internet, 2010.

6.a4 Bf5 7.Be2 e6 (7...Bg4 8.0-0 e6 9.Ne5 Be2 10.Qe2 Bd6) 8.0-0 Bg4 9.Ne5 Be2 10.Qe2 Bd6.

6.a4 Bg4 7.h3 (7.Bd3 e6 8.0-0 Bd6 9.h3 Bh5 10.Be2 0-0; 7.Be2 e6 8.0-0 Bd6 9.Ne5 Be2 10.Qe2 0-0; 7.bc6 Nc6 8.h3 Bf5 9.Be2 Rc8 10.Bb5 a6) 7...Bh5 8.Nc3 e6 9.g4 Bg6 10.Ne5 Bd6.

6.Bd3 Bg4 A) 7.0-0 Qd6 (7...Ne4 8.h3 Bh5 9.Bd4 Qd6 10.g4 Bg6; 7...e6 8.a3 Bd6 9.h3 Bh5 10.Nc3 e5) 8.h3 Bh5 9.a4 Ne4 10.g4 Bg6; B) 7.h3 Bh5 (7...Bd7 8.bc6 Nc6 9.Bf6 ef6 10.0-0 Be6) 8.Bf6 ef6 9.bc6 bc6 10.0-0 Bd6.

6.Bd4 Nd7 A) 7.Bd3 Qc7 8.bc6 bc6 9.Bf5 e6 10.Bh3 c5; B) 7.Bc3 Qc7 (7...Qb6 8.a4 Qc7 9.d4 cb5 10.ab5 Nc4) 8.d4 cb5 9.Bb5 Nc4 10.0-0 a6; C) 7.Nc3 f6 8.bc6 bc6 9.Ne2 e5 10.Bc3 Rb8.

6.Bd4 Ne4 7.Ne5 c5 8.Bb2 Bf5 9.g4 Be6 10.f3 Nd6.

6.Bd4 e6 A) 7.Bd3 Bd6 (7...Bd7 8.Nc3 cb5 9.Bb5 Nc6 10.Bc6 Bc6; 7...c5 8.Be5 Ne4 9.0-0 f6 10.Bb2 Bd6; 7...cb5 8.Bb5 Nc6 9.Ne5 Bd7 10.Nd7 Nd7) 8.Nc3 c5 9.Be5 0-0 10.0-0 c4; B) 7.Nc3 Be7 (7...Bd6 8.Be2 Nd7 9.bc6 bc6 10.Na4 e5) 8.Be2 0-0 9.0-0 cb5 10.Nb5 a6; C) 7.Ne5 c5 (7...Bd6 8.Ng4 Be7 9.Nf6 Bf6 10.Bf6 Qf6; 7...Bd7 8.Bc3 Qb6 9.Be2 Bd6 10.a4 0-0) 8.Bb2 c4 9.Be2 Bd6 10.0-0 0-0; D) 7.Be2 Bd6 (7...a6 8.ba6 b6 9.0-0 Ba6 10.Ba6 Ra6; 7...cb5 8.Bb5 Nc6 9.Ne5 Bd7 10.Nd7 Nd7; 7...Bd7 8.a4 Bd6 9.0-0 0-0 10.Be5 Qe7) 8.Nc3 Nd7 9.bc6 bc6 10.Na4 e5.

6.Be2 Qb6 A) 7.Bf6 ef6 (7...gf6 8.Nc3 Rg8 9.bc6 Nc6 10.Rb1 Qd8) 8.bc6 bc6 9.0-0 Bd6 10.d4 0-0; B) 7.0-0 Bg4 (7...Nc4 8.Bf6 gf6 9.Nc3 Rg8 10.e4 Bh6; 7...cb5 8.Bd4 Qd6 9.Bb5 Bd7 10.Nc3 Nc6) 8.Bf6 gf6 9.Nc3 e6 10.Rb1 c5.

6.Be2 Bd7 A) 7.bc6 Nc6 8.0-0 e6 9.Nc3 e5 10.d4 e4; B) 7.Bf6 ef6 (7...gf6 8.bc6 Nc6 9.Nc3 Rg8 10.Rg1 e6) 8.bc6 bc6 9.0-0 Bd6 10.d4 Rb8; C) 7.0-0 e6 8.Nc3 Bd6 9.bc6 bc6 10.Rb1 0-0.

6.Be2 e6 A) 7.a4 Bd6 (7...c5 8.0-0 Bd6 9.Be5 0-0 10.d4 Qc7; 7...Bd7 8.Ne5 Bd6 9.0-0 0-0 10.f4 Qc7) 8.Be5 0-0 9.0-0 a6 10.d4 Ne4; B) 7.Ne5 Bd6 (7...Bd7 8.Nc3 cb5 9.Nb5 Be7 10.0-0 Nc6; 7...a6 8.a4 Bd6 9.0-0 0-0 10.f4 Qc7; 7...Qb6 8.Nc3 Nd7 9.Nf3 Nc4 10.Bc4 dc4) 8.0-0 0-0 9.a4 Nd7 10.f4 f6; C) 7.Bd4 cb5 (7...Bd6 8.Nc3 Nd7 9.bc6 bc6 10.Na4 e5; 7...a6 8.ba6 b6 9.0-0 Ba6 10.Ba6 Ra6) 8.Bb5 Nc6 9.Nc3 Bd7 10.Bc6 Bc6; D) 7.0-0 Bd7 (7...Bd6 8.Be5 cb5 9.Bb5 Bd7 10.Be2 Qc7; 7...cb5 8.Bb5 Bd7 9.Bf6 Qf6 10.Bd7 Kd7; 7...a6 8.a4 Bd6 9.Ne5 0-0 10.f4 Qc7) 8.bc6 Nc6 9.Ne5 Qb6 10.Bc3 Ne5.

6.Be2 Bg4= 7.Bf6 ef6 (7...gf6 8.Nc3 e5 9.bc6 bc6 10.Rb1 Rg8) 8.Nd4 Bd7 9.Nc3 Bd6 10.0-0 0-0.

6.Ne5 a6 A) 7.a4 Bf5 (7...Nd7 8.Bd3 Ne5 9.Be5 cb5 10.ab5 Nc4; 7...Qc7 8.Be2 e6 9.0-0 Bd6 10.f4 0-0) 8.g4 Bg6 9.Nc3 d4 10.Ng6 hg6; B) 7.ba6 b6 8.Bc3 Nd7 9.Nf3 e6 10.a7 Ra7.

6.Ne5 Qb6 A) 7.Be2 Bf5 (7...cb5 8.Bd4 Qd6 9.Bb5 Nc6 10.c4 Nd7; 7...e6 8.Nc3 Nd7 9.Nf3 Nc4 10.Bc4 dc4; 7...Nd7 8.0-0 f6 9.Nd7 Bd7 10.Nc3 Nc4) 8.g4 Be6 9.Na3 Nd7 10.Rb1 c5; B) 7.Bd3 cb5 (7...e6 8.a4 c5 9.0-0 Be7 10.Qf3 0-0) 8.Bd4 Qc7 9.Bb5 Nc6 10.Nc3 a6; C) 7.Na3 a6 (7...Bf5 8.g4 Bg6 9.f3 e6 10.Rb1 c5) 8.Bd4 c5 9.Bb2 c4 10.Rb1 e6; D) 7.Nc3 Nd7 (7...e6 8.Be2 Nd7 9.Nf3 Nc4 10.Bc4 dc4; 7...Qc7 8.f4 a6 9.ba6 b5 10.a4 b4; 7...Bf5 8.g4 Bc8 9.f4 Nd7 10.Na4 Qd8) 8.Nd7 Bd7 9.bc6 Bc6 10.Rb1 Nc4.

6.Ne5 Nd7 A) 7.Qh5 Ne5 (7...g6 8.Qh4 Ne5 9.Be5 f6 10.Bc3 cb5) 8.Be5 Bd7 9.Bd3 Nc4 10.bc6 Bc6; B) 7.f4 Qb6 (7...Ne5 8.Be5 e6 9.Qh5 cb5 10.Bb5 Bd7; 7...e6 8.Be2 Ne5 9.Be5 Bd7 10.a4 Nc4; 7...a6 8.bc6 Nc6 9.Nf3 e6 10.Nc3 b5) 8.Nc3 Ne5 9.Na4 Qd8 10.Be5 Bf5; C) 7.Nd7 Bd7 (7...Qd7 8.Qf3 a6 9.ba6 ba6 10.Bd3 Nb7) 8.bc6 Bc6 9.Bd4 Nc4 10.f4 e5; D) 7.Bd3 Ne5 (7...Nc5 8.Qf3 Nd3 9.cd3 Be6 10.bc6 f6) 8.Be5 Bd7 9.Qh5 Nc4 10.bc6 Bc6.

6.Ne5 Bf5 A) 7.Bc3 Rc8 (7...Nd7 8.Qf3 Ne5 9.Qf5 Nec4 10.bc6 e6; 7...c5 8.g4 Bg6 9.Bg2 e6 10.d3 d4; 7...Qc7 8.g4 Bg6 9.f3 e6 10.Ng6 hg6) 8.g4 Bg6 9.h4 h6 10.Ng6 fg6; B) 7.Bd4 e6 8.bc6 Nc6 9.Bb5 Qc7 10.g4 Bd6; C) 7.Be2 e6 (7...Qc7 8.f4 cb5 9.Bb5 Nc6 10.0-0 e6; 7...Nd7 8.0-0 e6 9.a3 Qc7 10.Nd7 Qd7) 8.g4 Bg6 9.h4 Qc7 10.h5 Bd6; D) 7.g4 Bd7 8.g5 Ne4 9.Qh5 Be6 10.Rg1 Nd6.

6.Ne5 g6 7.Bc3 Bg7 8.Ba5 Qa5 9.bc6 0-0 10.Nc3 (10.cb7 Bb7 11.Be2 Ne4=) 10...Ne4=+ 11.Ne4 de4 (11...Be5 12.cb7 Bb7 13.Rb1=+) 12.Nc4 Qg5 (12...Qc7 13.cb7 Bb7 14.c3=+) 13.cb7= Bb7 14.Rb1 Bd5 15.h4 Qf6 16.h5 Rac8 17.Na3 Ba2 18.Rb7 Bd5 19.Ra7 Qb6 (19...Ra8 20.Ra8 Ra8 21.hg6 hg6 22.Qc1–+) 20.Ra4 (20.Ra6 Qc5+=) 20...f5 (20...Ra8 21.Bb5=) 21.Nb5 (21.c4 Bc6 22.c5 Qc5 23.Qb3 Rf7 24.Rc4=) 21...f4? (better 21...g5!?+=) 22.hg6 hg6 23.Nd4 (better 23.c4!? Be6 24.Qb1+-) 23...fe3= 24.de3 Rfd8 (24...Ra8 25.Ra8 Qb4 26.c3 Qc3 27.Qd2 Qd2 28.Kd2 Ra8 29.Be2=) 25.Be2 (better 25.Ba6 Rc5 26.c4+-) 25...e5=+ 26.Nb5 Bc6?? (better 26...Bb3! 27.Qb1 Ba4 28.Qa2 Kf8 29.Qa4 Qc5 30.Qe4 Qc2 31.Qf3 Qf5-/+) 27.Qb1+- Rb8 (27...Qc5 28.Qb3 Kf8 29.Ra7+-) 28.Qa2+- Kf8? (better 28...Bd5 29.c4 Bf7+-) 29.Qa3 Kf7 (29...Kg8 30.Ra6 Qb7+-) 30.Qb3 (better 30.Ra6 Qb5 31.Bb5 Bb5 32.Ra7 Bd7 33.Rh7+-) 30...Kf6 31.Nc3 (better 31.c4+-) 31...Qb3 32.cb3 Rb3 33.Ne4?? (33.Rc4 Bb7 34.Rh7= (34.Ne4? Be4 35.0-0 Rb2 36.Re4 Re2–+)) 33...Be4–+ 34.Re4 (34.0-0 Rb2 35.Re4 Re2 36.g4–+) 34...Rb1 35.Bd1 Rbd1 36.Ke2 R8d2 37.Kf3 Rh1 38.Ra4 Rh4! 39.Ra6?? (39.Rh4 Bf8 Combination) 39...Kg5 40.g3 (40.Ra5–+) 40...Rf4! 41.Kg2 (41.ef4 ef4 Combination; 41.gf4 ef4 Combination) 41...Rff2 42.Kh3 (42.Kg1 Rg2 43.Kh1 Rh2 44.Kg1 Kg4 45.Rg6 Kh3 46.Rh6 Bh6 47.g4 Rd1) 42…Rh2 0–1. FeegLood (2580) – Blitzstream_twitch (2405), lichess.org, 2015.

6.h3 Bd7 7.Nc3 A) 7...Nc4 8.Bc4 (8.bc6 Bc6 9.Bc4 dc4 10.Qe2 Rc8 11.e4=) 8...dc4 9.a4 cb5 10.ab5 Nf6 11.Qe2+=; B) 7...f6 8.bc6 (8.Ba3 Nc4 9.bc6 Bc6 10.Bc4 dc4 11.Rb1=) 8...bc6 9.Ba3 e5 10.Bf8 Kf8 11.d4+=; C) 7...e6 8.Ne5 (8.bc6 Nc6 9.Rb1 Nf6 10.Nb5 a6 11.Nbd4=; 8.Rb1 Nf6 9.a4 Bd6 10.bc6 Nc6 11.Nb5=; 8.e4 Nf6 9.ed5 cd5 10.Bd3 Bd6 11.Qe2=) 8...Nf6 9.Be2 Bd6 10.f4 0-0 11.0-0=.

6.h3 Bd7 7.bc6 A) 7...Bc6 8.Ne5 (8.Be2 Nc4 9.Bd4 f6 10.d3 Nd6 11.0-0=; 8.Nc3 e6 9.Rb1 Nc4 10.Bc4 dc4 11.0-0=; 8.Na3 Nf6 9.Rb1 Nd7 10.Nb5 Nc4 11.Bd4=) 8...Nf6 9.Nc6 Nc6 10.Bf6 ef6 11.Bd3=; B) 7...Nc6 8.c4 (8.Be2 e6 9.0-0 Nf6 10.Ne5 Rc8 11.Nc6=) 8...dc4 9.Bc4 e6 10.0-0 Nf6 11.Nc3=.

6.h3 Bd7 7.Ne5 =.

6.h3 Bf3 7.Qf3 Qb6 8.Bd4 (8.a4 e6 9.Bd3 Ne7 10.0-0 Rd8 11.Rd1+=) 8...c5 9.Be5 f6 10.Bc3 Rd8 11.e4 +=.

6.h3 Bf3 7.Qf3 Nc4 8.Bc4 dc4 9.bc6 bc6 10.Qc6 Qd7 11.Qa8 Qd8 12.Qa7 e6 13.Qa4 Qd7 14.Qd7 Kd7 15.Na3 Nf6 16.Nc4 Ne4 17.0-0 Bc5 18.Bg7 Rb8 19.Ne5 Ke8 20.d3 Nd2 21.Rfd1 Bb4 22.Nc6 Rb6 1–0. Bonetti,Shane – taticsmaster, ICC, 2002.

6.h3 Bf3 7.Qf3 Qc7 8.Bd3 (8.Be2 e5 9.0-0 Ne7 10.e4 Nc4 11.Bc4+=; 8.Qf4 Qf4 9.ef4 cb5 10.Bb5 Nc6 11.Be5=; 8.e4 e6 9.Be2 Nc4 10.Bc4 dc4 11.a4+=; 8.Nc3 Nf6 9.Be2 e5 10.Qg3 Qd6 11.0-0=; 8.bc6 bc6 9.Nc3 Rb8 10.Rb1 e5 11.Qg3=) 8...e6 9.0-0 Ne7 10.Nc3 Nc4 11.Bc4 +=.

6.h3 Bf3 7.Qf3 Rc8 8.Bd4 (8.Be2 e6 9.0-0 Nf6 10.Bd4 c5 11.Bb2=) 8...c5 9.Bc3 e6 10.Qg4 c4 11.Bg7 +=.

6.h3 Bf3 7.Qf3 e6 8.Bd3 (8.Be2 Nf6 9.Bf6 Qf6 10.Qf6 gf6 11.d4=; 8.a4 Nf6 9.Be2 Rc8 10.0-0 Bd6 11.Nc3=; 8.Nc3 Nf6 9.Be2 Rc8 10.0-0 Bd6 11.a4=) 8...Nf6 9.0-0 c5 10.Qg3 Nh5 11.Qg4 =.

6.h3 Bf3 7.Qf3 Nf6 8.Bd3 cb5 (better is 8...e6!?=) 9.Bb5+/- Nc6 10.Bf6 ef6 11.Nc3 d4?? (better is 11...a6 12.Ba4 b5+/-) 12.Bc6+- bc6 13.Qc6 Ke7 (13...Qd7 14.Qa8 Qd8 15.Qc6 Qd7 16.Qe4 Be7 17.Rb1+-) 14.Nd5 Qd5 15.Qd5 (15.Qd5 Rb8 16.0-0+-) 1–0. Rosner,Dirk – Mosley,Gene, DESC, 1999.

6.h3 Bf3 7.Qf3 Nf6 8.Be2 e6 9.Bf6 Qf6 10.Qf6 gf6 11.g3 =.

6.h3 Bf3 7.Qf3 Nf6 8.Bf6 ef6 9.Be2 Bd6 10.d4 0-0 11.0-0 +=.

6.h3 Bf5 7.Nc3 A) 7...Qd6 8.d3 (8.g4 Bg6 9.Nh4 e5 10.Ng6 Qg6 11.Rb1=; 8.Nd4 Bg6 9.bc6 bc6 10.Nf3 e5 11.Rb1=; 8.bc6 bc6 9.Ne2 Nc4 10.Bc3 Na3 11.Rc1+=) 8...e5 9.Ne2 e4 10.Nfd4 Bd7 11.Bc3+=; B) 7...e6 8.Be2 (8.Nd4 Bg6 9.Be2 Nf6 10.0-0 c5 11.Nf3=; 8.Rb1 c5 9.d3 Nf6 10.Be2 Bd6 11.g4=; 8.a3 c5 9.d3 Nf6 10.Nh4 Bg6 11.Ng6=; 8.Rc1 Ne7 9.Nh4 e5 10.Nf5 Nf5 11.e4=; 8.g4 Be4 9.bc6 bc6 10.Ne4 de4 11.Nd4=) 8...Ne7 9.0-0 Nc4 10.Bc4 dc4 11.e4=; C) 7...Nh6 8.Ba3 (8.g4 Bd7 9.Ne5 e6 10.Rb1 Bc8 11.bc6=) 8...e6 9.Bf8 Rf8 10.bc6 Nc6 11.Rb1+=; D) 7...c5 8.Na4 (8.d3 e6 9.Be2 Nf6 10.0-0 Bd6 11.Nh4=; 8.Be2 Nf6 9.g4 Bg6 10.g5 Ne4 11.d3+=; 8.g4 Bg6 9.d3 e6 10.Bg2 f6 11.h4=) 8...c4 9.d3 Rc8 10.Bc3 cd3 11.cd3+=; E) 7...Nf6 8.a3 (8.Rb1 c5 9.g4 Bg6 10.g5 Ne4 11.d3=; 8.Be2 Qd6 9.bc6 bc6 10.Rb1 e5 11.d3=; 8.Rc1 Qd6 9.bc6 bc6 10.Nb1 Be4 11.Ba6=; 8.g4 Bg6 9.Ne5 e6 10.Rb1 Bd6 11.Ng6=) 8...Rc8 9.Rb1 e6 10.Be2 Nc4 11.Bc4=.

6.h3 Bf5 7.Be2 A) 7...Qb6 8.Nc3 (8.Na3 e6 9.Rb1 c5 10.Nh4 Ne7 11.d3+=) 8...Nc4 9.Bc4 dc4 10.e4 Bd7 11.Ne5+=; B) 7...e6 8.0-0 Nf6 9.Nh4 Bg6 10.Nc3 Qb6 11.Ng6=; C) 7...Nh6 8.0-0 (8.Nc3 e6 9.0-0 Qd6 10.d3 cb5 11.Nb5+=; 8.Nd4 Qc7 9.f4 e6 10.0-0 cb5 11.Nb5=) 8...e6 9.Nc3 Qc7 10.Rb1 Be7 11.bc6+/-; D) 7...Bd7 8.Nc3 (8.a4 f6 9.0-0 Nc4 10.Bc4 dc4 11.Nc3=; 8.bc6 Nc6 9.Nc3 Nf6 10.Nb5 e6 11.0-0=; 8.Na3 cb5 9.Nb5 Nc4 10.Bc4 dc4 11.a4=) 8...Nc4 9.Bc4 dc4 10.a4 cb5 11.ab5+=; E) 7...cb5 8.Bb5 Bd7 9.Qe2 Rc8 10.Ne5 Nf6 11.Nc3=; F) 7...Nf6 8.Nc3 (8.0-0 Qb6 9.Na3 Rd8 10.Re1 e6 11.Rb1=) 8...Qd6 9.bc6 bc6 10.Nb1 e6 11.Nh4=; G) 7...Qc8 8.Bc3 (8.Nc3 Nf6 9.Rb1 e6 10.g4 Be4 11.bc6=; 8.Nd4 Bd7 9.bc6 Nc6 10.0-0 Nf6 11.Nc6=; 8.0-0 Nc4 9.Bc4 dc4 10.bc6 Qc6 11.Ne5+=; 8.Bd4 cb5 9.Bb5 Nc6 10.Nc3 a6 11.Bc6+=; 8.a4 Nc4 9.Bc4 dc4 10.d3 cb5 11.ab5+=) 8...Nc4 9.bc6 Qc6 10.Nd4 Qg6 11.Nf5+=; H) 7...Rc8 8.Nc3 (8.0-0 Nf6 9.a4 e6 10.Nh4 Bg6 11.f4=; 8.Nd4 Bg6 9.bc6 Nc6 10.Nc6 bc6 11.0-0=; 8.Na3 Be4 9.0-0 e6 10.d3 Bf3 11.Bf3=; 8.a4 e6 9.0-0 Nf6 10.Nh4 Bg6 11.f4=) 8...Nc4 9.Bc4 dc4 10.bc6 Rc6 11.Nd4+=; I) 7...Be4 8.Ng5 (8.bc6 Nc6 9.0-0 Qb6 10.Qc1 Nf6 11.Bf6=) 8...Bf5 9.0-0 e5 10.Nf3 f6 11.Nc3=.

6.h3 Bh5 7.Nc3 A) 7...e6 8.g4 (8.bc6 Nc6 9.Bb5 a6 10.Bd3 Bf3 11.Qf3=) 8...Bg6 9.h4 Nf6 10.h5 Be4 11.h6=; B) 7...Qd6 8.bc6 (8.g4 Bg6 9.bc6 bc6 10.Rb1 e5 11.h4=) 8...bc6 9.d4 Nf6 10.Rb1 Rb8 11.g4=; C) 7...Bf3 8.Qf3 e5 9.Be2 Nf6 10.Qg3 e4 11.0-0=; D) 7...Nf6 8.g4 (8.bc6 Nc6 9.g4 Bg6 10.Bb5 a6 11.Bc6=) 8...Bg6 9.Ne5 e6 10.Rb1 Bd6 11.Ng6=.

6.h3 Bh5 7.Bd3 A) 7...Qb6 8.Nc3 (8.a4 Nf6 9.Bf6 ef6 10.g4 Bg6 11.bc6=; 8.Na3 a6 9.g4 Bg6 10.Bg6 hg6 11.Bd4+=) 8...Nc4 9.Bc4 dc4 10.a4 Nf6 11.g4+=; B) 7...e6 8.a3 (8.Nc3 Nf6 9.Rb1 Rc8 10.Ba1 c5 11.0-0+=; 8.Qe2 Nf6 9.Nc3 Bd6 10.Rb1 c5 11.g4=; 8.bc6 Nc6 9.Nc3 Nf6 10.0-0 Bd6 11.Nb5+=; 8.0-0 Nf6 9.Nc3 Bd6 10.bc6 Nc6 11.Be2+=; 8.a4 Nf6 9.0-0 Bd6 10.Na3 0-0 11.Be2+=; 8.Bd4 f6 9.Bc3 e5 10.Be2 cb5 11.Nh4=) 8...Nf6 9.Nc3 Bd6 10.g4 Bg6 11.g5=; C) 7...f6 8.bc6 (8.g4 Bf7 9.Ba3 e5 10.Bf8 Kf8 11.Be2=; 8.Ba3 e5 9.Bf8 Kf8 10.bc6 e4 11.cb7+=) 8...Nc6 9.Be2 e6 10.Nc3 Bd6 11.Nb5=; D) 7...Qd6 8.Na3 (8.g4 Bg6 9.Bg6 hg6 10.Bc3 Qc7 11.Qe2=; 8.Bd4 f6 9.Bc3 Nc4 10.a4 Ne5 11.Be5=; 8.Qe2 e5 9.bc6 Nc6 10.g4 Bg6 11.Bb5=) 8...e5 9.g4 e4 10.gh5 ed3 11.cd3=; E) 7...Nf6 8.Bf6 (8.0-0 Ne4 9.Bd4 f6 10.Bc3 e5 11.bc6+=; 8.Bd4 e6 9.Nc3 c5 10.Be5 c4 11.Be2+=) 8...ef6 9.Nc3 Bd6 10.g4 Bg6 11.Bg6=.

6.h3 Bh5 7.Bd4 e6 8.g4 (8.Nc3 f6 9.bc6 Nc6 10.Ne2 Bf3 11.gf3+=; 8.Bd3 f6 9.Bc3 e5 10.Be2 Bd6 11.bc6+=) 8...Bg6 9.Ne5 c5 10.Bb2 Nf6 11.d3 =.

6.h3 Bh5 7.g4 Bg6 8.Ne5 (8.Nc3 e6 9.h4 Nf6 10.h5 Be4 11.h6=; 8.Bd4 f6 9.Bc5 Nh6 10.d4 Qd7 11.a4=) 8...f6 (8...e6 9.a3 Ne7 10.h4 f6 11.Ng6=) 9.Ng6 hg6 10.bc6 (10.Bd3 g5 11.Bg6+=) 10...Nc6 11.Bg2 (11.Bd3+=) 11...e5 12.f4 ef4 13.ef4 Bd6 14.Nc3 Bf4 15.Nd5 (worse is 15.Bd5 Bg3 16.Kf1 Nge7 17.Bc6 bc6+=) 15...Bg3 16.Kf1 Nge7 17.Qe2 0-0 18.Ne7 Ne7 19.Ba3 Re8 20.Bb7 Nd5?? (better is 20...Rb8 21.Be4 Be5+=) 21.Qf3+- (21.Qf3 Nf4 22.Qg3+-; 21.Ba8? Re2 22.Ke2 Qa8–+) 1–0. Bonetti,Shane – wacky, ICC, 2002.

5.Nf3 Nc4 6.Bc3 =.

5.Nf3 f6 6.d4 Bg4 (6...Nc4 7.Bc4 dc4 8.Nc3+=) 7.Ba3 Qd7 (7...Qe6 8.Nbd2+=) 8.Nbd2 c6 9.Bb4 b6 (9...Qc7!?+=) 10.Ba5+/- ba5 11.Rb1 Rb8 (11...Nh6!?+/-) 12.bc6 Qc7 13.Rb8 Qb8 14.h3 Bf3 15.Qf3 Qb6? (better is 15...e6 16.e4 Ne7 17.ed5 Nd5+-) 16.Qh5 g6 17.Qd5 a4 (17...Qc7+-) 18.Bc4 Nh6 19.Qd7# 1–0. MrkT – jtincorp69, internet, 2005.

5.h3 Nc4 6.Bc4 dc4 7.Qh5 (7.Nf3 Qb4 8.Be5 Qb5 9.Bc7=; 7.Nc3 e5 8.Nf3 Nf6 9.0-0=; 7.Na3= e5 8.Nf3 e4 9.Nd4+=) 7...Nf6 8.Bf6 Qf6 9.Nc3 =.

5.h3 e5 6.Ba3 Qb6 7.Bf8 Kf8 8.Qh5 Qd6 9.Nf3 =.

5.h3 e5 6.Ba3 c5 =.

5.h3 e5 6.Ba3 Qe6 7.Bf8 Kf8 8.d4 a6 9.ba6 +=.

5.h3 e5 6.Ba3 Qf6 7.Bf8 Kf8 8.Qf3 e4 9.Qf6 =.

5.h3 e5 6.d3 d4 7.Qe2 Be6 8.Nf3 c5 9.ed4 +=.

5.h3 e5 6.Nf3 e4 7.Be5 (7.Nd4 Nf6=) 7...Qb6 (7...Qe7 8.Bc3 ef3 9.Ba5 fg2 10.Bg2=+) 8.Bd4 (8.Nc3 Ne7 9.Na4 Qe6=) 8...Qh6 (better is 8...Qe6 9.Ne5 Bd6=) 9.Be5? (better is 9.Ne5!?=) 9...ef3-/+ 10.Bf4? (better is 10.Bc7 Nc4 11.Qf3-/+) 10...fg2 11.Bg2 Qe6 12.0-0 Bd6 13.Re1 Nf6 14.Nc3 0-0 15.e4 Bf4 16.ed5 Qd6 17.Ne4 Ne4 18.Be4 Bh3 (19.Qh5 Qh6 20.Qh6 Bh6–+; 18...Qh6!? 19.Bg2–+) 0–1. gtate (1960) – gdraper (1955), net–chess.com, 2006.

5.h3 e5 6.Qh5 e4 7.Qe5 (7.Be5 Qe7 8.Nc3 c6 9.Bd4=) 7...Qe5 8.Be5 c6 9.Bc3 =.

5.h3 Bf5 6.Nf3 (6.Bc3 A) 6...Qb6 7.Ne2 (7.Bd4 c5 8.bc6 Qc6 9.Nc3+=; 7.Nf3 Nc4 8.a4 e6 9.Bc4+=) 7...Nf6 8.d3 a6 9.a4+/-; B) 6...Nc4 7.Nf3 (7.Bc4 dc4 8.Nf3 Be4 9.0-0=; 7.d3 Na3 8.Na3 Qa3 9.Ne2=) 7...0-0-0 8.Bd4 Kb8 9.Bc4=) 6...Qc5 (6...Nf6 7.d3 (7.Bc3 Nc4 8.d3 Nb6 9.Be2=; 7.Be2 Nc4 8.Bc4 dc4 9.Be5=; 7.Be5 Qd8 8.Bd3 Bd3 9.cd3=) 7...Qb6 8.Bc3 a6 9.a4+/-; 6...0-0-0 7.d3 b6 8.Bc3 Nh6 9.Ba5+/-; 6...Nc4 7.Bc4 dc4 8.Be5 Qd7 9.Nc3=; 6...Nh6 7.Be5 (7.Bc3 Nc4 8.d3 Nb6 9.a4=) 7...Qd7 8.Bf4 0-0-0 9.c3+=) 7.Nd4 (7.Bc3 Nc4= 8.a4 e6 9.d3+=; 7.Nc3 Nf6 8.a3 Nc4 9.Bc4=) 7...Be4 (7...Bg6!?= 8.Ba3 Qb6 9.Nc3=) 8.d3+= Qb4?? (better is 8...Bg6+= 9.f4+=) 9.Bc3+- Qd6 (9...Qa4 10.de4 de4 11.Nd2+-) 10.de4 (10.Ba5?! Bg6+-) 10...Nc4 (10...b6 11.Nf5 Qg6 12.Qd5+-) 11.Nf5 Qc5 (11...Qg6 12.Qd5 Nd6 13.Nd6 Qd6 14.Qb7+-) 12.Qd5 Qd5 13.ed5 Nd6 (13...Nb6 14.Ng7 Kd7 15.Nf5+-) 14.Ng7 Bg7 (14...Kd7+-) 15.Bg7 0-0-0 (15...f6 16.Bh8 Kf7 17.g4+-) 16.Bh8 f6 17.Nc3 (better is 17.e4!? Nh6 18.Bg7 Nhf7+-) 17...Nh6 18.b6! cb6 (18...ab6 19.Bf6; 18...cb6 19.Bf6) 19.Bf6! ef6 20.Be2 (20.Bd3 Rd7+-) 20...Nhf5 (20...Nhf7 21.Rd1+-) 21.g4 Ne7 22.Bd3 h6 (22...Ng6 23.h4+-) 23.Ke2 (23.Rd1 b5+-) 23...Rf8 (23...Kd7 24.e4+-) 24.Kf3 (24.e4 Kd7+-) 24...f5 (24...Kd7 25.Rad1+-) 25.Kg3 (better is 25.gf5 Nef5 26.e4 Nh4 27.Ke2 Nf3+-) 25...fg4 (25...Kd7 26.gf5 Nef5 27.Kg4 Rg8 28.Kf4+-) 26.hg4 Rh8 (26...Nf7 27.Rad1+-) 27.e4 Nf7 28.Nb5 (28.f4 a6+-) 28...Kb8 (28...a6 29.Nd4+-) 29.d6 (29.f4 a6 30.Nd4 b5+-) 29...Nc6 30.f4 (better is 30.Rad1 a6 31.Bc4 Nce5+-) 30...Nb4 (30...a6 31.Nc3 Nd6 32.e5+-) 31.e5 (better is 31.Bc4 Nc2 32.Rac1 Na3 33.Na3 Nd6+-) 31...Nd5 (31...Nd3 32.cd3 a6 33.Nd4+-) 32.Bc4 a6 33.Bd5 ab5 34.Bf7 (34.Bf7 Ka7 35.e6+-) 1–0. pier_e – pilpolo, internet, 2009.

5.h3 Nf6 6.Nf3 A) 6...Bf5 7.d3 (7.Bc3 Nc4 8.d3 Nb6 9.Be2=; 7.Be2 Nc4 8.Bc4 dc4 9.Be5=; 7.Be5 Qd8 8.Bd3 Bd3 9.cd3=) 7...Qb6 8.Bc3 a6 9.a4+/-; B) 6...Nd7 7.Ba3 (7.a4 Nc4 8.Bc4 dc4 9.0-0=; 7.Bc3 Nc4 8.a4 Nce5 9.Ne5=; 7.d4 Nb6 8.Ba3 Qf6 9.Nc3=) 7...Qe6 8.Nc3 Nb6 9.Bc5+=; C) 6...Qd8 7.Bc3 (7.Bd3 e6 8.Ne5 c5 9.0-0=; 7.Ne5 Bf5 8.Bc3 c5 9.g4=; 7.Bd4 e6 8.Ne5 c5 9.bc6=; 7.Be2 e6 8.Bc3 c5 9.0-0=) 7...c6 8.Be2 e6 9.0-0=.

6.Nf3 Nc4 7.Bc4 dc4 8.bc6 (8.Be5 Qg6 9.bc6 Qc6 10.d4 cd3= 11.cd3 f6=) 8...Qc6 9.0-0 f6 10.Ba3 Nh6 11.d3 e5 =.

7.Bb5 Bd7 A) 8.Bd7 Qd7 9.Ne5 (9.d3 e6 10.Nbd2 Rc8 11.0-0 Qa4 12.Nb3 Nc6=; 9.0-0 Nc6 10.d3 Rc8 11.Nbd2 e6 12.c4 f6=; 9.Qe2 e6 10.0-0 Rc8 11.Rc1 f6 12.e4 de4=; 9.a3 f6 10.d3 e5 11.Nc3 Ne7 12.Rb1 Rc8=) 9...Qc7 10.c4 dc4 11.Na3 e6 12.Nac4 Nc6+=; B) 8.Be5 Qe6 9.Nc3 Rc8 (9...Nc6 10.Bf4 h6+= 11.Be2 a6 12.Na4 g5+/-) 10.Rb1 a6 11.Bd3 Bc6 12.Bf4 Nf6+=.

8.Be5 Qc5 9.Nc3 a6 10.Bc6 (10.Bd4 Qd6+= 11.Bc6 bc6 (11...Qc6 12.Ne5 Qd6 13.Qf3 Be6 14.a4 f6 15.Nd3+=) 12.e4 de4 13.Ne4 Qg6 14.Qe2 Rb8 15.d3+=) 10...bc6 (10...Qc6+=) 11.Rb1 Nf6? (better is 11...f6 12.Bc7 Qa7+=) 12.Na4+- Qc4?? (better is 12...Qa7 13.Nb6 Nd7 14.Na8 Qa8+-) 13.Nb6 Qa2 14.Ra1 1–0. pierre – johanwassermann, internet, 2008.

8.Be5 Qc5 9.Nc3 f6 10.Bd4 Qd6= 11.Na4 b6 12.c4 dc4 13.Rc1 e5 14.Nb2 Bd7 =.

8.Be5 Qc5 9.Nc3 f6 10.Bg3 A) 10...e5 11.Be2 (11.0-0 a6 12.Ba4 Nge7 13.Bb3 Na5 14.Ne2 Nb3=; 11.Rb1 a6 12.Ba4 Nge7 13.Bb3 Bf5 14.0-0 Na5=; 11.Ba4 Nge7 12.Rb1 a6 13.Bb3 Bf5 14.0-0 Na5=) 11...Bf5 12.Rb1 Nb4 13.Bb5 Kf7 14.Ba4 Ne7+=; B) 10...a6 11.Ba4 (11.Bd3 e5 12.e4 Nge7 13.ed5 Nd5 14.Nd5 Qd5=; 11.Be2 e5 12.e4 Nge7 13.Rb1 Qa5 14.ed5 Nd5+=; 11.Bc6 bc6 12.Rb1 e5 13.0-0 Qa5 14.Nh4 Ne7=; 11.Bf1 e5 12.e4 Nge7 13.ed5 Nd5 14.Ne4 Qa5=) 11...e5 12.e4 Nge7 13.Bb3 de4 14.Ne4 Qb4=.

8.Be5 Qe6 9.0-0 A) 9...Bd7 10.Bf4 (10.Bg3 Nf6 11.Nc3 Ne4 12.Ne4 de4 13.Bc6 Bc6=; 10.Bd4 Nd4 11.Nd4 Qd6 12.Nc3 Nf6 13.Qf3 e6=; 10.Bc7 Nf6 11.Bc6 Bc6 12.Nc3 Ne4 13.Ne4 de4=; 10.Bb2 a6 11.Ba4 Nf6 12.Nc3 Qd6 13.Bc6 Bc6=) 10...Nf6 11.Nc3 Ne4 12.Ne4 de4 13.Ng5 Qg6=; B) 9...a6 10.Bc6 Qc6 11.Bg3 f6 12.Nd4 Qd7 13.Nb3 b5=.

8.Be5 Qe6 9.Nc3 a6 10.Ba4 (10.Bc6 Qc6 11.Nd4 Qd7 12.Qh5 b5 13.Rb1 e6=; 10.Bf4 Ra7+= 11.Be2 Nf6 12.0-0 h6 13.Nd4 Nd4=) 10...Bd7 11.Qb1 Nd8 12.Qb3 Ba4 13.Na4 Rc8 +/-.

8.Be5 Qe6 9.c4 dc4 10.Qc2 Nf6 11.Na3 a6 12.Bc4 Qd7 13.Rc1 e6 =.

8.Be5 Qe6 9.d4 A) 9...Bd7 10.Bf4 (10.Na3 Rc8 11.Rb1 Ne5 12.Ne5 Bb5 13.Rb5 Qa6=; 10.c4 Ne5 11.Ne5 Bb5 12.cb5 Qb6 13.Nc3 e6=; 10.a4 Nf6 11.Nbd2 Ne5 12.Ne5 Bb5 13.ab5 Nd7+=; 10.Nc3 Rc8 11.Bf4 Nb4 12.Rb1 a5 13.Bd7 Qd7=; 10.Bg3 Nf6 11.Nbd2 a6 12.Be2 b5 13.Rb1 Rc8+=) 10...Rc8 11.c4 a6 12.Ba4 Na7 13.Bd7 Qd7+=; B) 9...Nf6 10.c4 Ne4 11.Nbd2 Nd2 12.Qd2 Bd7 13.Bg3 a6+=; C) 9...a6 10.Bd3 Nb4 11.Nc3 f6 12.Bf4 Qc6 13.Qd2 Bd7=.

8.Be5 Qe6 9.Bg3 A) 9...a6 10.Nc3 Ra7 11.Nd4 Qd7 12.Bc6 bc6 13.Na4 e5+/-; B) 9...Bd7 10.Nc3 (10.Be2 a6 11.Nc3 Nf6 12.Na4 Ne4 13.Nb6 Ra7+=; 10.0-0 Nf6 11.Nc3 Ne4 12.Ne4 de4 13.Bc6 Bc6=; 10.a3 Nf6 11.Nc3 Ne4 12.Ne4 de4 13.Bc6 Bc6=; 10.a4 Nf6 11.Nc3 Ne4 12.Bc6 Bc6 13.Nd4 Qd7=) 10...Nf6 11.Be2 a6 12.Na4 Ne5 13.Nd4 Qd6+=; C) 9...Nh6 10.Nc3 (10.Nd4 Qg6 11.Qf3 Nf5 12.Qd5 Nfd4 13.Qd4 Qc2+=; 10.0-0 Nf5 11.Bf4 g6 12.d4 a6 13.Bd3 Bg7=) 10...Nf5 11.Bf4 d4 12.Na4 de3 13.de3 Nd6+=; D) 9...Nf6 10.Nd4 (10.Nc3 Bd7 11.Bd3 Nb4 12.Be2 Ne4 13.Nb5 Rc8=; 10.0-0 Ne4 11.Bf4 Qf6 12.d4 a6 13.Bd3 b5=) 10...Qd7 11.Nc3 e6 12.Qf3 Be7 13.Rb1 0-0=.

5.a4 b6 6.Nc3 e6 7.Nf3 Bc5? (7...Nf6 8.Ne5=) 8.Ne5 (8.Nd5 f6 9.Nf4 Ne7+-) 8...Bd6 (better 8...Nf6+=) 9.Nf7?? (better 9.Nd7 Ne7 10.Nb1 Qd7 11.Bg7+/-) 9...Kf7-+ 10.Qh5 g6 11.Qf3 Qf6 (11...Nf6 12.g4 h6-+) 12.Qf6? (better 12.Nd5 Qf3 13.gf3=+) 12...Nf6-+ 13.f3 Rhe8 (13...e5 14.Be2-+) 14.Ne2 (14.Be2 Nc4 15.Bc4 dc4-+) 14...Nc4 15.Bf6 Kf6 16.Nd4 (16.Nc3 a6 17.Bc4 dc4-+) 16...e5 17.Nc6 Bc6 (17...Na3 18.Rc1-+) 18.bc6 (18.Bc4 Bb7 19.Bb3 a6-+) 18...Bb4 (18...Na5 19.Ba6-+) 19.Bc4 dc4 20.c3 Bc5 21.0-0 (21.a5 Re6-+) 21...Re6 22.Rae1 (22.Rf2 Rc6 23.a5 Rd6-+) 22...Rc6 23.f4 ef4 (23...Rd8 24.Re2-+) 24.Rf4 Kg7 25.Ref1 (25.Kf1 Bd6 26.Rh4 Rf8 27.Ke2 Rc5-+) 25...Rd8 26.d4 (26.R1f2 Rcd6 27.Rc4 Rd2 28.Rd2 Rd2 29.Kf1-+) 26...Ba3 (better 26...cd3 27.Rf7 Kg8-+) 27.e4 Bb2 28.d5 (28.R1f3-+) 28...Rcd6 (better 28...Rc5!? 29.R4f3 Ra5-+) 29.Rf7 Kh6 (29...Kg8 30.Rc7 Bc3 31.Rc4-+) 30.Rc7 (30.R1f3!?-/+) 30...Bc3-+ 31.Ra7?? (better 31.Rc4 Be5 32.g3-+) 31...b5! 32.ab5 (32.Rd1 Bb4 33.Rb7 Bc5 34.Kh1-+) 32...Bd4 33.Kh1 Ba7 34.g4 (34.Ra1 Bd4 35.Rd1 Be3-+) 34...c3 35.h4 (35.Kg2 Be3 36.Kg3 c2-+) 35...Kg7 (35...Be3 36.Rf7 Rc8 37.Kg2-+) 36.h5 (36.Rc1 Bd4 37.Kg2 Re8-+) 36...g5 (36...Be3!? 37.h6 Bh6 38.Rf2-+) 37.Rc1 Rc8 38.Kg2 Be3 39.Rc2 Bf4 40.Kf3 Rb8 (better 40...Rb6 41.Ke2 Rb5 42.Kd3-+) 41.Rc3 Rb5 42.Rc7 (42.Ra3 Rdb6-+) 42...Kh6 43.Ke2 Rdd5 44.Rc6 (44.Rh7 Kh7 45.ed5 Rd5-+) 44...Rd6 45.Rc4 (45.Rd6 Bd6 46.Kd3 Rb3 47.Kd4 Ba3-+) 45...Re6 (45...Rd2 46.Kf3 Rb3 47.Rc3 Rc3) 46.Kd3 (46.Ra4 Rb2 47.Kd3 Rg2-+) 46...Rb1 (better 46...Rb3 47.Kc2 Rg3 48.Rc5-+) 47.Ke2 (47.Rd4 Rb3 48.Kc4 Rg3-+) 47...Rg1 (47...Rd6 48.Rc2 Rh1 49.e5 Rh2 50.Kf3 Rd3 51.Ke4 Re3 52.Kd5 Re5 53.Kc6 Rc2 54.Kd6 Kg7 55.Kd7 Kf7 56.Kd6 Rec5 57.Kd7 Rd5) 48.Kf3 (48.Kf2 Rg4 49.Rd4 Rb6-+) 48...Rf1 (better 48...Rg3 49.Kf2 Rb6 50.Rc2-+) 49.Kg2 Re1 50.Kf3 (50.Rb4 Re2 51.Kf3 Re3 52.Kg2 Ra6-+) 50...Ra1 (50...Rf6 51.Rc2 Bd2 52.Kg3 Re3 53.Kg2 Re2 54.Kg3 Be1 55.Kh3 Rf3) 51.Ke2 (51.e5 Rg1 52.Rf4 Rf1 53.Ke4 Rf4 54.Kd5 Re8 55.e6 Rd8 56.Kc6 Rc4 57.Kb5 Rc1 58.Kb4 Rb8 59.Ka4 Ra1) 51...Ra3 (51...Rd6 52.Rc2 Rh1 53.e5 Rh2 54.Kf3 Rd3 55.Ke4 Re3 56.Kd4 Rc2 57.e6 Re1 58.e7 Rd1 59.Ke4 Re2 60.Kf3 Re3 61.Kg2 Rd2 62.Kf1 Rh3 63.Kg1 Be3 64.Kf1 Rh1) 52.Rc5 Rb6 53.Rc2 Rg3 (53...Rh3 54.Kf1 Rb1 55.Ke2 Rbb3 56.Rc5 Rh2 57.Ke1 Rb1 58.Rc1 Rc1) 54.Rc5 Rg4 (54...Rb2 55.Rc2 Rc2 56.Kf1 Be3 57.e5 Rg1) 55.e5 Re6 (55...Rb3 56.Rc6 Kh5 57.Rb6 Rb6 58.Kd3 Be5 59.Kd2 Rg3 60.Ke1 Rb2 61.Kf1 g4 62.Ke1 Rg1) 56.Kf3 Kh5 0-1. alex296 - sawashyer (1720), Rated Classical game, lichess.org, 2013.

5.a4 b6 6.Nf3 e6 7.Bd3 Qe7 (7...c5 8.0-0+=) 8.0-0 f6 9.e4 0-0-0 10.Bc3 de4 11.Be4 Nb7 (11...e5 12.Ba5 ba5 13.Qe2+/-) 12.Nd4 e5 13.Nc6 Bc6 14.Bc6 Na5 (14...Qc5!?+/-) 15.Qg4+- Kb8 16.Bf3 Nb7? (better is 16...Qc5+-) 17.Qe4 c6 18.bc6 (18.Qc6?! Qc7 19.Qe4 Ne7+-) 18...Nc5 (18...Nd6 19.c7! Kc7 20.Qc6 Kb8 21.Bb4+-) 19.c7! Kc7 (19...Kc7 20.Qc6; 19...Qc7 20.Qa8) 20.Qc6 Kb8 21.Qa8 Kc7 22.Qa7 Kd6 (22...Kc8 23.Qa8 Kc7 24.Qc6 Kb8 25.Qb6 Kc8 26.Bg4 Rd7+-) 23.Qb6 Kd7 24.Qc6# 1–0. b4_player – Gnatman, gamecolony.com, 2006.

5.a4 Nc4 6.Bc3 (6.Bc4 dc4 7.Qe2 Nf6+=) 6...a6 7.d3 (7.ba6!? Ra6 8.Na3+=) 7...Nd6+= 8.Nf3 ab5 9.ab5 Nb5 10.Ra8 Qa8 11.Be2 (11.Bd2!?+=) 11...Nc3-/+ 12.Nc3 Qa5 13.Qd2 Qa1 14.Bd1 e6 15.Ne2 Nf6 16.0-0 Bd6 17.c3 Ba4 (better is 17...0-0!?-/+) 18.Ba4 Qa4 19.Qb2 b6 20.Ra1 Ba3?? (better is 20...Qc6=) 21.Qa3+- Qa3 22.Ra3 0-0 23.Ned4 c5 24.Nc2 Rc8 25.Nd2 h5 26.h3 d4?! (26...e5+-) 27.cd4 Nd5 28.dc5 Rc5 29.Nd4 Rc3 30.Rc3 Nc3 31.Kf1 b5 32.N4b3 b4 33.Nc4 f5 34.Ne5 g5 35.Nc6 Nd5 36.e4 fe4 37.de4 Nf6 38.f3 g4 39.Nb4 gf3 40.gf3 Kf7 41.Kf2 h4 42.Ke3 e5 43.f4 ef4 44.Kf4 Ke6 45.Nd4 Kd6 46.Kf5 Ne4 47.Ke4 Kc5 48.Ndc6 Kc4 49.Kf4 Kc5 50.Kg4 Kb6 51.Kh4 Kc5 52.Kg5 Kd6 53.h4 Ke6 54.Kg6 Kd7 55.h5 Ke8 56.Kg7 Kd7+- 57.h6 Ke6 58.h7 Kd6 59.h8Q Kc5 60.Qd8 Kb5 61.Qd5 Ka4 62.Qc5 Kb3 63.Qc2 1–0. Valpa – Djpnola, playchess.de, 2003.

5.a4 e6 6.Be2 (6.Nf3 a6 (6...f6 7.Be2 e5 8.0-0 Bg4 9.d4 e4=; 6...Nf6 7.Ne5 Bd6 8.Nd7 Kd7 9.Bd3 Qe7=; 6...Ne7 7.Bc3 c5 8.Ne5 Bc8 9.Bd3 Nf5+=; 6...c6 7.Ne5 Nf6 8.Bd3 Bd6 9.0-0 c5=) 7.Ne5 Nf6 8.Bc3 c5 9.Qf3 c4=; 6.Bd3 a6 (6...Nf6 7.Nf3 Bd6 8.0-0 c5 9.Ne5 0-0=; 6...c6 7.Nf3 f6 8.bc6 bc6 9.Ba3 Ba3=; 6...Ne7 7.Nf3 f6 8.Nh4 Qc8 9.Qh5 Kd8=; 6...c5 7.Nf3 Nf6 8.0-0 Bd6 9.Na3 0-0=) 7.Nc3 Nf6 8.ba6 ba6 9.Qe2 Bc8=; 6.Bc3 c5 (6...c6 7.Nf3 Nf6 8.Ne5 Bd6 9.Nd7 Kd7=) 7.Nf3 Nf6 8.Be2 Bd6 9.0-0 0-0=) 6...c5 (6...c6 7.Nf3 Nf6 8.Ne5 Bd6 9.f4 Qc7=; 6...Nf6 7.Nf3 Bd6 8.Ne5 0-0 9.0-0 c6=; 6...f6 7.Nf3 e5 8.0-0 Nc4 9.Bc4 dc4=; 6...a6 7.ba6 ba6 8.Nf3 Nf6 9.Ne5 Bd6=; 6...Ne7 7.Nf3 Nf5 8.Bc3 Nc4 9.Bc4 dc4+=) 7.d3 (7.Nf3 Nf6 8.0-0 Be7 9.Ne5 0-0=) 7...a6 8.c4 ab5 (8...Nf6 9.Be5 Be7=) 9.cb5 (9.ab5 Nf6+=) 9...Bd6?? (better is 9...f6=; 9...Nf6=) 10.Bg7+- Nf6 (10...Qg5 11.Bh8 Qg2 12.Bf3+-) 11.Bh8 Be5 12.Ra2 Qe7 13.Nf3 Qd6 (13...Bd6 14.0-0+-) 14.Ne5 (better is 14.d4 cd4 15.ed4 Qb4 16.Kf1 Bd4 17.Nd4 Ne4+-) 14...Qe5 15.0-0 0-0-0 (15...Ke7 16.d4 cd4 17.ed4+-) 16.Bf6 (16.d4!? Qf5 17.Bf6 Qf6+-) 16...Qf6 17.f4 Rg8 18.Nd2 b6 19.Nb3 Qg7 20.Na5 (better is 20.Bf3 Nb3 21.Qb3+-) 20...Qg2 0–1. Trkn – Antz, itsyourturn.com, 2000.

5.a4 Bf5 A) 6.d3 Nf6 (6...e6 7.Bc3 c5 8.e4 Bg6 9.Qd2 b6=; 6...c5 7.Be2 e6 8.Nd2 Nf6 9.Ngf3 Bd6=) 7.Bc3 c5 8.Qd2 b6 9.Ne2 Nb7=; B) 6.Bd3 Bd3 7.cd3 e6 8.Nf3 Nf6 9.0-0 Bd6=; C) 6.Nf3 e6 (6...Nf6 7.Bc3 c5 8.Be2 Ne4 9.Bb2 Nc4=) 7.Bc3 c5 8.Be2 Nf6 9.0-0 Bd6=.

5.a4 Nf6 6.Bd3 c6 (6...Bg4 7.f3 Bc8 8.Ne2 e6 9.0-0 Bd6=; 6...Nc4 7.Bc4 dc4 8.Qe2 Be6 9.Nf3 Qd5=; 6...g6 7.Nf3 Bg7 8.0-0 c5 9.Be5 0-0=) 7.Bd4 Nc4 8.bc6 Bc6 9.Nf3 Nd7=.

5.a4 Nf6 6.Nf3 Ne4 7.d3+= Nf2?? (better 7...Nd6+=) 8.Kf2+- e6 9.Bc3 b6 10.Ne5 Nb7 11.Qf3 f6? (11...Nd6+-) 12.Qh5 g6 (12...Ke7 13.Bb4 Nc5 14.Ng6 hg6 15.Qh8 Kf7+-) 13.Ng6! hg6 (13...hg6 14.Qg6 Double attack (14.Qh8 Pinning; 14.Qh8 Deflection)) 14.Qg6 Ke7 15.Bf6 Kd6 16.Qg3 Kc5 (16...e5 17.Qe5 Kc5 18.c3 Qf6 19.Qf6 Be6 20.Qe6 Rh2 21.Qc6) 17.Bd4 Kb4 18.Bc3 (18.Bc3 Kc5 19.d4) 1–0. GuestMMLL – fakf, freechess.org, 2020.

5.a4 Nf6 6.Nf3 Bf5 7.Be2 e6 8.0-0 Bd6 9.d3 Bg4=.

5.a4 Nf6 6.Nf3 Bg4 7.h3 Bh5 8.Bc3 c5 9.Be2 e6=.

5.a4 Nh6 A) 6.Bc3 c5 (6...c6 7.d3 f6 8.Qd2 b6 9.Ba5 ba5=) 7.Nf3 e6 8.d4 cd4 9.Qd4 Qc7=; B) 6.Bd3 Bf5 (6...c6 7.Nf3 f6 8.bc6 Bc6 9.Nd4 e5=; 6...Bg4 7.Nf3 f6 8.h3 Bh5 9.g4 Bf7=; 6...e6 7.Nf3 f6 8.Nc3 Bc5 9.0-0 0-0=) 7.Nf3 e6 8.0-0 Bd3 9.cd3 c5=; C) 6.Be2 f6 7.d4 c6 8.Nd2 Qb6 9.c4 dc4=; D) 6.Nf3 f6 (6...Bg4 7.Bc3 c5 8.Be2 e6 9.d3 d4+=; 6...Bf5 7.Be2 Nc4 8.Bc4 dc4 9.0-0 e6+=) 7.d4 Nf7 8.Bd3 Bg4 9.Bc3 c6+=.

5.Nc3 e6 A) 6.Bd3 Qg5 (6...c6 7.Nf3 cb5 8.Nb5 f6 9.Qe2 Qc8=; 6...Nf6 7.Nf3 Bd6 8.e4 de4 9.Ne4 Ne4=; 6...Be7 7.Nf3 Nf6 8.Ne5 c5 9.Qf3 0-0=) 7.Qf3 Nf6 8.Nce2 Bd6 9.h4 Qh5=; B) 6.Qf3 Qh4 (6...Nf6 7.e4 Bc8 8.e5 Nd7 9.Nd1 c6=; 6...c6 7.Rb1 Nc4 8.Bc4 dc4 9.Nge2 Nf6=; 6...Ne7 7.Bd3 Ng6 8.Qh5 Nc4 9.Bc4 dc4=; 6...Be7 7.Nd5 ed5 8.Bg7 Bf6 9.Bh8 Bh8=; 6...Nh6 7.Bd3 c5 8.Be2 Qh4 9.g3 Qd8=) 7.e4 d4 8.Nd1 e5 9.c3 c5=; C) 6.Nh3 Nh6 (6...c6 7.bc6 Bc6 8.Rb1 Nc4 9.Bc4 dc4=; 6...Qh4 7.Nf4 Nf6 8.g3 Qh6 9.Qf3 0-0-0+=; 6...Nf6 7.Qf3 c6 8.Qf4 Rc8 9.a4 Be7=) 7.Qf3 Nf5 8.e4 Nd4 9.Qd3 c5+=; D) 6.a4 Nf6 (6...Be7 7.Nd5 ed5 8.Bg7 Bf6 9.Bh8 Bh8+=; 6...c5 7.bc6 Bc6 8.Nf3 Nf6 9.Ne5 Bc5=; 6...c6 7.Nf3 Nf6 8.Be2 Bd6 9.0-0 e5=) 7.Nf3 Bd6 8.Be2 e5 9.0-0 0-0=; E) 6.f4 Qh4 (6...Nf6 7.Nf3 c6 8.Ne5 cb5 9.Nd7 Nd7=; 6...Be7 7.Nf3 Bf6 8.Rb1 Nh6 9.Be2 Nf5=; 6...Qe7 7.Nf3 0-0-0 8.Be2 Nh6 9.0-0 f6=; 6...c6 7.Nf3 Nf6 8.Ne5 cb5 9.Nd7 Nd7=) 7.g3 Qe7 8.Nf3 0-0-0 9.Ne5 f6=; F) 6.Nf3 Nf6 (6...c6 7.Ne5 Nf6 8.Be2 Bd6 9.f4 Qc7=; 6...Qe7 7.Bd3 Qd6 8.a4 Nf6 9.0-0 e5+=) 7.Ne5 Bd6 8.f4 0-0 9.Be2 c5=.

5.Nc3 Nf6 6.Nf3 Bg4 (6...e6 7.Ne5 Bd6 8.f4 0-0 9.Be2 c5=; 6...Bf5 7.Be2 Qd6 8.d3 e5 9.a3 a6=) 7.h3 Bf3 8.Qf3 e5 9.Qf5 Bd6 =.

5.Bd4 e6 6.Nc3 a6 (6...Nf6 7.Rb1 Qe7 8.Nf3 Qa3 9.Be2 Bc5+=; 6...Nh6 7.Bd3 f6 8.e4 c5 9.bc6 Nc6=; 6...f6 7.Bd3 g6 8.f4 c5 9.bc6 Nc6=; 6...c5 7.Be5 f6 8.Bg3 Ne7 9.Nf3 e5=) 7.ba6 ba6 8.Be5 Nc6 9.Bg3 Nf6 =.

5.Bd4 Bf5 A) 6.Nc3 Nh6 (6...f6 7.Bc5 Nh6 8.d4 e6 9.Bf8 Rf8=) 7.Be2 e6 8.d3 c5 9.Be5 d4=; B) 6.Ne2 Qd6 (6...Nf6 7.Ng3 Bg6 8.h4 h5 9.Bd3 Bd3=; 6...e6 7.Ng3 Bg6 8.Nh5 f6 9.Nf4 Bf7=; 6...f6 7.Bc3 c5 8.Nf4 d4 9.Ba5 Qa5=; 6...Nh6 7.Ng3 e6 8.Be2 c5 9.Bb2 Qh4=) 7.Bc3 Nc4 8.Nd4 Bd7 9.Qf3 Nb6=; C) 6.Bc3 c6 (6...Nc4 7.e4 Bd7 8.a4 c6 9.ed5 cd5=; 6...c5 7.Nf3 Nf6 8.Be2 Ne4 9.Bb2 e6=) 7.Nf3 e6 8.Nd4 Ne7 9.Nf5 Nf5=; D) 6.Nf3 Nh6 7.d3 c6 8.c4 cb5 9.cd5 e6+=.

5.Bd4 Nf6 A) 6.Nf3 Bg4 (6...e6 7.Be2 c5 8.Be5 Ne4 9.d3 Nd6=; 6...c6 7.Nc3 e6 8.Be2 cb5 9.Bb5 Nc6=) 7.h3 Bh5 8.Nc3 e6 9.g4 Bg6=; B) 6.Be2 e6 (6...Nc4 7.Nc3 e5 8.Bc4 Bg4 9.Be2 ed4=; 6...c6 7.a4 Ne4 8.Nf3 e6 9.0-0 c5+=) 7.Nf3 c5 8.Be5 Be7 9.Nc3 0-0=; C) 6.Nc3 e6 7.Be2 Ne4 8.Ne4 de4 9.Rb1 Qg5=.

5.Bd4 Nh6 A) 6.Nc3 e6 (6...Bf5 7.Be2 e6 8.Rb1 Bg6 9.Nf3 Nf5=; 6...Nf5 7.Bc5 e6 8.Bf8 Rf8 9.Bd3 Nd6=) 7.Bd3 c5 8.Be5 c4 9.Be2 f6+=; B) 6.a4 e6 (6...Nf5 7.Bc3 c5 8.Nf3 f6 9.d4 cd4=; 6...Bf5 7.d3 e6 8.Bc3 c5 9.e4 Bg4=; 6...c6 7.Nf3 f6 8.Bc5 e5 9.Bf8 Rf8=) 7.Nf3 f6 8.Bc3 c5 9.Be2 Bd6=.

5.Nf3 a6 6.ba6 ba6 7.Ne5 Nc4 8.Nc4 dc4 9.Bc4 Bb5 10.Qf3 Bc4 11.Qc6 Qd7 12.Qa8 Qd8 13.Qc6 1–0. guest1826 – anonymous, ICC, 2002.

5.Nf3 Nc4 6.Bc3 Bb5+= 7.a4 (7.Ne5 Nf6+=) 7...Ba6 (7...Bc6 8.d3 Nd6 9.Ne5+=) 8.Be2 c6 (8...e6 9.Ne5+=) 9.0-0 Qc7 (9...Nf6 10.d3 Nd6 11.Be5+=) 10.d3= Nd6 11.Be5 (11.Nbd2 f6=) 11...f6 12.Bf4 (better is 12.Bd6!? Qd6 13.d4+=) 12...e5-/+ 13.Bg3 Nf5 14.c4 (14.Nc3 Ng3 15.fg3 Qa5-/+) 14...dc4 15.dc4 Rd8 16.Qb3 (16.Qc2 Ng3 17.hg3 Bb4-/+) 16...Nge7 (16...Ng3 17.hg3 e4 18.Nd4-/+) 17.Nc3-/+ c5 (17...h5 18.e4 Ng3 19.hg3-/+) 18.Nb5 (18.Rad1 Ng3 19.hg3 Nc6+=) 18...Bb5 19.cb5 b6 (19...Ng3 20.Bc4 Nc6 21.fg3-/+) 20.Bc4 (better is 20.Rad1=) 20...Ng3?? (20...Ng6 21.Bd5=) 21.fg3 (21.Bf7 Kd7 22.Qe6) 21...Nd5?? (better is 21...Ng6=) 22.Bd5+- Qd6 (22...Rd6+-) 23.Bc6 Ke7 24.Rfd1 (24.Ng5 Rd7 25.Bd7 Kd7+-) 24...g5 (24...c4 25.Qc2 Qc7 26.Rd8 Kd8 27.Rd1 Bd6+-) 25.Rd6 Rd6 26.Ne1 (26.Rd1 c4 27.Qb4 Kf7 28.Rd6 Kg7 29.Rd7 Kh6 30.Qc4 Be7 31.Qf7 Rg8 32.Re7 Rg7 33.Qg7 Kh5 34.Qh7 Kg4 35.Qh3) 26...Bh6 (26...a5 27.Rd1 c4 28.Qc2 Rc6 29.bc6+-) 27.Nd3 (27.a5 c4 28.Qc4 g4+-) 27...e4 (27...Rhd8 28.Be4+-) 28.Nf2 f5 29.Rd1 (29.Qc3 Rc8 30.Qe5 Re6 31.Qf5 Rf8+-) 29...Rhd8 (29...Rd1 30.Qd1 Rd8 31.Qh5+-) 30.Rd6 Rd6 31.h3 (31.Qg8 Kf6 32.g4 Re6 33.Qh7 Bg7 34.gf5 Rc6 35.bc6 Kf7 36.Qg6 Kf8 37.c7 Bf6 38.c8Q Ke7 39.Qge8 Kd6 40.Qee6) 31...g4 (31...Kf8 32.g4 fg4 33.Ne4+-) 32.hg4 fg4 33.Ng4 Rd3 (33...Rg6 34.Nh6 Rh6+-) 34.Qg8 (34.Nh6?! Rb3 35.Be4 Ra3+-) 34...Be3 35.Ne3 (35.Kh2 Bg1 36.Kh1 Rd7 37.Qg7 Ke8 38.Nf6 Kd8 39.Qd7) 35...Re3+- 36.Qh7 Kf6 37.Qh6 Ke5 38.Qe3 c4 39.Qe4 Kf6 40.Qc4 (40.g4 c3 41.Qf4 Kg7 42.g5 Kg6 43.Qf6 Kh5 44.Bf3 Kh4 45.Qf4) 40...Kg5 41.Qf4 (41.Qe6 a5 42.Be4 Kh5 43.Qg6) 41...Kg6 42.g4 Kg7 (42...a6 43.g5 ab5 44.Qf6 Kh7 45.Qh6 Kg8 46.Bd5) 43.Qf5 (43.g5 Kg6 44.Qf6 Kh5 45.Bf3 Kh4 46.Qf4) 43...Kg8 44.Qf6 Kh7 45.Be4 (45.g5 Kg8 46.Bd5 Kh7 47.Qh6) 45...Kg8 46.Bd5 Kh7 47.g5 a6 48.g6 (48.Qh6) 48...Kh6 49.Qh4 (49.g7 Kh7 50.g8Q) 49...Kg7 (49...Kg6 50.ba6 Kf5 51.Qh5 Kf6 52.a7 Ke7 53.Qe5 Kd7 54.a8Q b5 55.Qae8) 50.Qh7 (50.Qe7 Kg6 51.g4 Kh6 52.Be4 ab5 53.Qf6) 50...Kf6+- 51.Qf7 Ke5 (51...Ke5 52.ba6 b5+-). stoker – ERIC1, Live Game Caissa's Web, 2005.

5.Nf3 Nc4 6.Bc4 dc4 7.a4 e6 8.Na3 Nf6 (8...a6 9.ba6 Ra6 10.Nc4 Ba4 11.0-0=) 9.Nc4+- Be7 10.0-0 0-0 11.Nce5 a6 12.c4 ab5 13.ab5 Ra1 14.Qa1 Qa8 (better 14...c6!?+-) 15.Nd7+- Nd7 16.Bg7 Qa1 17.Ba1 (worse 17.Ra1 Kg7 18.d4 c5=+) 17...Bf6 (17...Ra8 18.Bd4+-) 18.d4 (18.Bf6!? Nf6 19.Ra1 Ne4+-) 18...Ra8 19.Ne5 (better 19.g4!? Bg7+-) 19...Ne5 (19...Be5!? 20.de5 Ra4+-) 20.de5+- (20.de5 Be7 21.Bd4+-) 1–0. GuestRRKZ – perfics, freechess.org, 2017.

5.Nf3 Nc4 6.Bc4 dc4 7.Nc3 Nf6 (7...c6 8.bc6 Bc6 9.Qe2 Bf3 10.Qf3=) 8.Qe2 e6 (8...Bg4 9.h3 Bh5 10.Qc4 Bf3 11.gf3+/-) 9.0-0 a6 10.a4 ab5 (10...Bd6 11.Qc4 0-0 12.e4+/-) 11.ab5 Ra1 12.Ra1 Be7 (12...Bd6 13.Qc4 e5 14.Nd5+/-) 13.Qc4 0-0 14.Na4 b6 (14...c6 15.b6+/-) 15.e4 Qa8? (better is 15...Ne8!? 16.e5 f6+-) 16.Nb6! Qa1?! (16...cb6 17.Ra8) 17.Ba1 cb6 18.Qa4 Rc8 19.d3 Ne8 20.Ne5 Rc7 21.Bd4 Bc8 22.Bb6 Rb7 23.Nc4 Nd6 24.Qa8 h5 25.Nd6 Rb6 26.Nc8 Rb5 27.Ne7 Kh7 28.Qg8 Kh6 29.Qh8 Kg5 30.Qg7 Kh4 31.Qg3# 1–0. pcmvr (1700) – gdraper (1715), net–chess.com, 2006.

5.Nf3 Nc4 6.Bc4!? dc4 7.Ne5 +=.

5.Nf3 c6 6.a4 Nc4 7.Bc4 dc4 8.Na3 a6 (8...cb5 9.ab5 f6 10.Qe2+=) 9.bc6+/- Bc6 10.0-0 (10.Nc4 Bd5 11.Nce5 Rc8+/-) 10...b5 (better 10...Qd5!?+=) 11.ab5+/- ab5 12.Ne5 Qd5 13.Nc6 Qc6 14.Nb5! Ra2?? (14...Qb5 15.Ra8 Discovered attack (15.Ra8 Deflection; 15.Ra8 Overloading)) 15.Ra2 (15.Ra2 c3 16.Ra8 Qa8 17.Nc7 Kd7 18.Na8 cb2 19.Qh5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 e6 6.a4 Nc4 7.Qc1 Nb2=+ 8.Qb2 Be7 9.Qg7?? (better 9.Bd3=) 9...Bf6–+ 10.Qg3 Ba1 11.c3 Qf6 (11...Nf6 12.Ne5–+) 12.Bd3 (12.Qc7 Qf5 13.d3 Qf6 14.Qb7 Bc3 15.Kd1 Rc8 16.Qa7 Ne7–+) 12...0-0-0 13.0-0 Bb2 14.Nd4 (14.Qe5 Rf8–+) 14...Ne7 15.a5 (15.Qf4 Qf4 16.ef4 Rdg8–+) 15...Rhg8 (better 15...e5 16.Qf3 Qf3 17.Nf3–+) 16.Qh3 (16.Qf3 Qg5 17.Qg3 Qh6–+) 16...e5 17.Qh7 (17.Qf3 Qf3 18.Nf3 e4–+) 17...ed4 (better 17...Rh8 18.b6 ab6 19.a6–+) 18.ed4 Qd6 (better 18...Rh8 19.Qh8 Rh8 20.f3–+) 19.f4 Ba3 (better 19...Ng6 20.Qh6 Rh8 21.Qg5–+) 20.Na3 Qa3 21.Qf7 (21.a6 Qb2 22.Rf2 Rdf8 23.ab7 Kb7–+) 21...Qd6 (21...Bh3 22.Rf2 Qc1 23.Bf1–+) 22.Re1 (22.Qh5 Ng6 23.b6 ab6 (23...Nf4?! 24.ba7 c6 25.a8Q Kc7 26.Qd8 Rd8 27.Qf3 Nd3 28.Qd3=+) 24.Bg6 Qg6 25.Qg6 Rg6–+) 22...Rde8 (better 22...Ng6 23.Bf5 Nh4 24.Bd7 Qd7 25.Qd7 Kd7 26.Kf1 Ng2 27.Re5 Nf4 28.Rf5–+) 23.g3 Rgf8 24.Qh5 Rg8 25.Qf3?? (25.Qf7 Kb8 26.a6–+) 25...Bg4–+ 26.Qg2 Qh6 (better 26...Bf5 27.Bf1–+) 27.h4 (27.a6 Qd6–+) 27...Bh5 (better 27...Bf5 28.Bf1 Be4 29.Qh3 Kb8 30.Kf2–+) 28.Re5 Nf5 (better 28...Rg7 29.a6–+) 29.Rf5?? (better 29.Bf5 Kb8 30.Kh2=+) 29...Re2 (better 29...Qg6 30.Kh2 Be2 31.Be2 Qf5–+) 30.Be2+- Be2 31.Qe2 Qg6 (31...Rg3 32.Kf2 Rg8+-) 32.Re5 (better 32.Rg5 Re8 33.Qg4 Qe6 34.Qe6 Re6 35.h5+-) 32...Qg3 33.Qg2 (33.Kf1 Qg1) 33...Qe1 (33...Qg2) 34.Kh2 1–0. avz81 (1665) – TLarry (1695), lichess.org, 2018.

5.Nf3 f6 6.d4 Be6 (6...e6 7.Nbd2=) 7.Qd2 Qd7?? (better 7...Nc4 8.Bc4 dc4+=) 8.Qa5+- 1-0. DEFFM – cristinel, freechess.org, 2021.

5.Nf3 Bg4 A) 6.h3 Bh5 (6...Bf5 7.Nc3 e6 8.d3 Nf6 9.Be2 Bg6=) 7.Be2 e6 8.0-0 Nf6 9.d3 a6=; B) 6.Bd3 Nf6 (6...e6 7.0-0 Nf6 8.Bc3 Nc4 9.h3 Bh5=) 7.0-0 e6 8.Bc3 Nc4 9.Qe2 Nd6=; C) 6.Be2 e6 (6...Bf3 7.Bf3 Nc4 8.Bc3 e6 9.0-0 Qh4=; 6...Nf6 7.Ne5 Be2 8.Qe2 e6 9.0-0 Bd6=) 7.0-0 Nf6 8.Ne5 Be2 9.Qe2 Bd6=; D) 6.Bd4 e6 (6...Nf6 7.h3 Bh5 8.g4 Bg6 9.Ne5 e6=; 6...Qd6 7.Be2 f6 8.h3 Bf3 9.Bf3 e5=; 6...f6 7.h3 Bh5 8.Bc5 e5 9.Bf8 Kf8=) 7.h3 Bh5 8.g4 Bg6 9.Ne5 Be4=; E) 6.Bc3 Nc4 7.Bc4 dc4 8.Qe2 Qd5 9.Na3 Bf5+=.

6.ba6 ba6 7.Nf3 e6 8.Ne5 Nf6 9.Nd7 Nd7=.

6.Nc3 Nf6 (6...Nc4 7.Bc4 dc4 8.Nf3 Bg4 9.h3 Bh5+=) 7.Nf3 e6 8.Ne5 Bd6 9.Nd7 Qd7=.

6.Bd4 e6 (6...Nf6 7.Nc3 e6 8.Nf3 Bd6 9.Bd3 c5=; 6...Nh6 7.ba6 ba6 8.Bc3 c5 9.Nf3 f6=) 7.Nc3 Nh6 8.Be5 f6 9.Bg3 Bb4=.

6.Qf3 e6 (6...c6 7.Bd4 Nc4 8.Bc4 dc4 9.b6 e5=) 7.Be2 Nf6 8.Nh3 Bd6 9.Nc3 c6=.

6.Nf3 ab5 7.ab5 Nf6 8.Ne5 e6 9.Nd7 Nd7+=.

6.Nf3 ab5 7.ab5 Bg4 8.h3 Bf3 9.Qf3 Nf6 10.Bc3 Nc4? (better 10...c5+=) 11.Bc4+- dc4 12.Qb7 Rb8 (12...Ra1 13.Ba1 Nd5 14.e4+-) 13.Qc6 Nd7 14.Ra7 Rb6 (14...e6 15.Ba5 (15.Qc4?! Bc5 16.Ra6 Qg5+-) 15...Bd6 16.Na3+- (16.Qc4?! Ne5 17.Qa4 Nc6+-)) 15.Qc4 f6 (15...Qb8 16.Qc7 Qc7 17.Rc7+-) 16.0-0 (16.Ba5 Ne5 17.Qb3 Nd7+-) 16...e5 (16...Qb8 17.Rc7 Kd8 18.Rc6 Rb5 19.Na3+-) 17.Rc7 Rb8 18.Ba5 Bd6 19.Ra7 Rc8 (19...Qe7 20.Nc3 Bc5 21.Nd5+-) 20.Qg4 (better 20.Qd5!? Qe7+-) 20...Qe7 21.Nc3 h5 (21...Qf7+-) 22.Qg6 Kf8 23.Qf5 Rc5 (23...Ke8 24.Nd5 Qf7 25.Nb6+-) 24.Rd7 (24.Qd7!? Qd7 25.Rd7 Be7+-) 24...e4 25.Re7 Rf5 26.Rd7 (26.Rd7 Be7 27.Nd5 Rd5 28.Rd5+-) 1–0. DEFFM – GuestDHMH, freechess.org, 2018.

6.Nf3 Nc4 7.Bc4 dc4 8.Nc3 Bg4 9.h3 Bh5+=.

6.Nf3 c5 7.Be2 Bg4 8.ba6 ba6 9.Nc3 Nf6=.

6.Nf3 e6 7.Ne5 Nf6 8.Bc3 c5 9.Qf3 c4=.

6.Nf3 Bf5 7.ba6 ba6 8.Nc3 Nc6 9.Ne2 Bg4=.

6.Nf3 Nf6 7.ba6 ba6 8.Be2 e6 9.0-0 Bd6=.

6.Nf3 Bg4 7.Bc3 c5 8.Be2 e6 9.0-0 Nf6=.

5.Nf3 Bg4 6.Be2 e6 7.0-0 Qd6 (7...Nf6!?+=) 8.d3+- Qb4 (8...Nf6 9.Qd2 b6 10.h3 Bf3 11.Bf3+- (worse 11.gf3 Qd7=)) 9.Bc3 Qb5? (better 9...Qa4+-) 10.Nd4+- Be2 11.Nb5 (11.Ne2 Nf6=+; 11.Qe2?! Qa6=) 11...Bd1 12.Nc7 (12.Rd1 Kd7 13.Ba5 c5+-) 12...Kd8? (better 12...Kd7 13.Na8 Bc2 14.Ba5 Bd6+-) 13.Na8+- (13.Rd1 Kc7 14.Ba5 b6=+; 13.Ba5?! Rc8 14.Ne6 Ke8 15.Nc7 Rc7 16.Bc7 Bc2+-) 13...Bc2 (13...Nc6 14.Rd1 Kc8 15.Bb2+-) 14.Ba5 Kc8 (14...b6 15.Nb6! ab6 16.Bb6 Kd7+-) 15.Rc1 b6 (15...Ne7 16.Rc2 Nc6 17.Nd2+-) 16.Rc2 Kb7 17.Rc7 Ka8 (17...Kb8 18.Rd7 Be7 19.Bb6 ab6 20.Nb6+-) 18.Rc8 Kb7 19.Rf8 ba5 20.Rf7 (better 20.Na3 e5+-) 20...Kb6 (20...Ka6 21.Rf8 Kb7 22.Nd2+-) 21.Rg7 (21.Na3 e5 22.Rb1 Kc5 23.Ra7 Ne7 24.Re7 Kd6 25.Rbb7 Rc8 26.Nb5 Kc5 27.Na7 Rc6 28.Red7 Rb6 29.Rdc7 Kb4 30.Rb6 Ka3 31.Rc2 Ka4 32.Nb5 e4 33.Nc3 Ka3 34.Rb3) 21...Nf6 (21...Nh6 22.Na3 Rf8 23.Rb1 Kc6 24.Ra7+-) 22.Na3 Rc8 (22...a6+-) 23.Rb1 Ka6 24.Nb5 Ne8 25.Ra7 Kb6 26.Rh7 Ka6 27.Re7 Rc5 28.Re6 Kb7 29.Re8 Rb5 1–0. DEFFM – GuestTyuu, freechess.org, 2019.

6.Nf3 Nh6 7.ba6 ba6 8.Be2 Bg4 9.Nc3 e6+=.

6.Na3 a6 A) 7.Nf3 Nf6 (7...ab5 8.ab5 Nf6 9.Bd3 g6 10.Ne5 Bg7 11.Qf3 0-0 12.0-0 Ng4; 7...Bf5 8.ba6 ba6 9.Nd4 Bd7 10.Bd3 Nf6 11.Nf3 e6 12.0-0 Bd6; 7...h6 8.Bd3 Nf6 9.Ne5 e6 10.0-0 Bd6 11.Qf3 Qc7 12.Nd7 Nd7; 7...h5 8.Ne5 Nf6 9.Bd3 Qc7 10.0-0 h4 11.h3 e6 12.Qf3 Bd6) 8.Bd3 g6 9.ba6 ba6 10.Ne5 Bg7 11.Bc3 0-0 12.0-0 Be6; B) 7.Be2 Nf6 (7...Qb6 8.Nf3 Nf6 9.Ne5 Bf5 10.0-0 e6 11.Bd4 Bc5 12.Bc5 Qc5; 7...ab5 8.ab5 Nf6 9.Nf3 g6 10.0-0 Bg7 11.Ne5 0-0 12.Bd4 Qc7; 7...h6 8.Nf3 Nf6 9.Ne5 e6 10.0-0 Bd6 11.Bd3 0-0 12.ba6 ba6; 7...e6 8.Nf3 Nf6 9.0-0 Bb4 10.ba6 ba6 11.Ne5 0-0 12.Bd3 Ne4; 7...Nh6 8.Nf3 f6 9.ba6 ba6 10.0-0 Rb8 11.Bc3 e5 12.d4 e4; 7...Bf5 8.Nf3 Nf6 9.0-0 ab5 10.ab5 g6 11.Ne5 Bg7 12.g4 Be6; 7...Rc8 8.Nf3 Nf6 9.Ne5 e6 10.0-0 Bd6 11.Bd3 0-0 12.Qf3 Qc7; 7...Qc8 8.ba6 ba6 9.Nf3 Nf6 10.0-0 e6 11.Be5 Be7 12.Qb1 Qd8; 7...Bc8 8.Nf3 Nf6 9.0-0 Ne4 10.ba6 ba6 11.Rb1 e6 12.Qc1 Rb8; 7...Qc7 8.ba6 Nf6 9.Nf3 e6 10.Be5 Bd6 11.Bd6 Qd6 12.Qb1 Qc7; 7...c5 8.Nf3 Nf6 9.0-0 g6 10.ba6 ba6 11.c4 Bg7 12.cd5 0-0; 7...h5 8.Nf3 Nf6 9.Ne5 Bf5 10.0-0 h4 11.ba6 ba6 12.h3 Qd6) 8.Nf3 ab5 9.ab5 g6 10.Ne5 Bg7 11.h4 Qc7 12.Nd7 Qd7; C) 7.Bd3 ab5 (7...Nf6 8.Nf3 g6 9.ba6 ba6 10.Rb1 Bg7 11.Bd4 Rb8 12.Ne5 Bf5; 7...c5 8.Nf3 Nf6 9.Ne5 c4 10.Be2 g6 11.Nd7 Qd7 12.Bc3 ab5) 8.ab5 Nf6 9.Nf3 g6 10.Ne5 Bg7 11.bc6 bc6 12.Bd4 0-0; D) 7.ba6 ba6 (7...Nf6 8.Nf3 ba6 9.Be2 g6 10.Rb1 c5 11.0-0 Bg7 12.Ne5 0-0; 7...e6 8.Nf3 Nf6 9.ab7 Nb7 10.Be2 Bd6 11.0-0 0-0 12.c4 Nc5; 7...h6 8.Nf3 Nf6 9.Bd3 ba6 10.0-0 e6 11.Ne5 Rb8 12.Bc3 Bd6; 7...h5 8.Nf3 Nf6 9.Rb1 ba6 10.Bd3 Rb8 11.0-0 e6 12.Be5 Rb1; 7...Nh6 8.Nf3 ba6 9.Rb1 Bf5 10.Bd3 Rb8 11.0-0 e6 12.Qc1 Bd3) 8.Nf3 Nf6 9.Be2 Ne4 10.0-0 f6 11.Rb1 Kf7 12.d3 Nc5.

6.Na3 cb5 A) 7.ab5 Nf6 (7...e6 8.Nf3 Nf6 9.Ne5 Qc7 10.Bd3 Bd6 11.Nd7 Kd7 12.Qf3 Be5; 7...Qc7 8.Nf3 Nf6 9.Be5 Qc5 10.Bd4 Qd6 11.Bd3 g6 12.c4 Bg7; 7...Bf5 8.Nf3 Nf6 9.Ne5 Qd6 10.Bd3 Bg6 11.0-0 Ne4 12.h3 Nc5; 7...Rc8 8.Nf3 Nf6 9.Bd3 g6 10.Ne5 Bg7 11.Qf3 0-0 12.Bd4 Ne4; 7...Rb8 8.Nf3 Nf6 9.Bd3 g6 10.0-0 Bg7 11.Ne5 0-0 12.Qf3 Be6; 7...h5 8.Nf3 Nf6 9.Bd3 g6 10.Bc3 Bg7 11.0-0 0-0 12.Qb1 Ne4) 8.Nf3 Rc8 9.Bd3 g6 10.Ne5 Bg7 11.Qf3 0-0 12.0-0 Be6; B) 7.Nb5 a6 8.Nd4 Nf6 9.Ngf3 Qc7 10.Bd3 Nc4 11.Bc4 dc4 12.Ne2 e6; C) 7.Bb5 Nf6 (7...a6 8.Bd7 Qd7 9.Nf3 Nc6 10.0-0 Nf6 11.c4 Ne4 12.Rc1 h5; 7...Bb5 8.ab5 e6 9.Nf3 Nf6 10.0-0 Bb4 11.Ne5 0-0 12.d3 Rc8; 7...Nc6 8.Nf3 Nf6 9.0-0 a6 10.Be2 Qa5 11.c4 e6 12.cd5 ed5; 7...Rc8 8.Nf3 Nf6 9.Ne5 Nc6 10.Nd7 Qd7 11.a5 e6 12.a6 b6; 7...e6 8.Nf3 Nf6 9.0-0 Bd6 10.Ne5 0-0 11.f4 Bc6 12.Rf3 a6; 7...h5 8.Nf3 Nf6 9.Ne5 Nc6 10.0-0 Ne5 11.Be5 a6 12.Bd7 Qd7; 7...Bc6 8.Nf3 Nf6 9.Ne5 a6 10.Be2 Ba4 11.0-0 Rc8 12.Nac4 Nc4) 8.Nf3 a6 9.Bd7 Qd7 10.0-0 Qa4 11.Ne5 Nc6 12.f4 Qe4.

6.Na3 Qb6 A) 7.Bd3 a6 (7...Nf6 8.Nf3 Bg4 9.h3 Bh5 10.0-0 Ne4 11.Rb1 Bf3 12.gf3 Nd6; 7...e6 8.Nf3 Nf6 9.Ne5 Bd6 10.Qf3 Qc7 11.Nd7 Qd7 12.Bf6 gf6; 7...c5 8.Nf3 c4 9.Be2 Nf6 10.Ne5 Qd6 11.0-0 Bf5 12.Bd4 h5; 7...Qc5 8.Nf3 Nf6 9.Ne5 g6 10.Bd4 Qd6 11.bc6 bc6 12.0-0 Bg7; 7...h5 8.Nf3 Nf6 9.Ne5 h4 10.Qf3 e6 11.0-0 Bd6 12.Nd7 Nd7; 7...Rd8 8.Nf3 Nf6 9.0-0 g6 10.bc6 Qb2 11.cd7 Rd7 12.Nb5 Nc6; 7...Qc7 8.Nf3 Nf6 9.Be5 Qb6 10.0-0 Ne4 11.Nh4 Rc8 12.f3 Nc5; 7...h6 8.Nf3 Nf6 9.0-0 e6 10.Ne5 Bd6 11.f4 Rd8 12.Rb1 c5; 7...Be6 8.Nf3 Nf6 9.0-0 g6 10.Nd4 Bd7 11.bc6 Nc6 12.Nab5 Bg7; 7...Nh6 8.Nf3 Bf5 9.0-0 Bd3 10.cd3 e6 11.Qc2 Rc8 12.e4 Qd8; 7...Rc8 8.Nf3 Nf6 9.Ne5 e6 10.0-0 Bd6 11.Qf3 Qc7 12.Qg3 0-0; 7...0-0-0 8.Nf3 Nf6 9.Ne5 Be8 10.Rb1 c5 11.Qf3 e6 12.0-0 Be7) 8.Nf3 Nf6 9.Ne5 e6 10.0-0 Bd6 11.Qf3 Qc7 12.Qf4 0-0; B) 7.Be2 Nf6 (7...cb5 8.ab5 Nf6 9.Bd4 Qc7 10.Nf3 Bf5 11.Be5 Qd7 12.0-0 Rc8; 7...e6 8.Nf3 Nf6 9.Ne5 Bd6 10.Bd3 h5 11.Qf3 Qc7 12.bc6 bc6; 7...Qc5 8.Bc3 b6 9.Nf3 Nf6 10.bc6 Qc6 11.Ne5 Qb7 12.Nd7 Kd7; 7...Nh6 8.Nf3 f6 9.0-0 Kf7 10.bc6 Nc6 11.Rb1 Nb4 12.Bd4 Qd6; 7...f6 8.Nf3 Nh6 9.0-0 Nf5 10.Bd3 e5 11.Nh4 Nh4 12.Qh5 Kd8; 7...a6 8.Nf3 Nf6 9.Ne5 Bf5 10.0-0 e6 11.Bd4 Bc5 12.Bc5 Qc5; 7...c5 8.Nf3 Nf6 9.0-0 e6 10.Ne5 Bd6 11.Nd7 Kd7 12.c4 Qc7; 7...Bf5 8.Nf3 Nf6 9.0-0 g6 10.Be5 Bg7 11.Nd4 0-0 12.Nf5 gf5) 8.Nf3 e6 9.Ne5 Bd6 10.Bd3 h5 11.Qf3 Qc7 12.bc6 bc6; C) 7.Nf3 Nf6 (7...Bf5 8.Nd4 Bd7 9.Bd3 Nf6 10.Nf3 c5 11.Ne5 c4 12.Bd4 Qd6; 7...e6 8.Bd3 Nf6 9.0-0 Bd6 10.Ne5 0-0 11.Qf3 Qc7 12.Nd7 Nd7) 8.Ne5 Bf5 9.Bd3 Bd3 10.cd3 e6 11.0-0 Bd6 12.Ng4 Nh5.

6.Na3 Rc8 A) 7.Bd3 Nf6 (7...cb5 8.ab5 Nf6 9.Nf3 g6 10.Ne5 Bg7 11.f3 0-0 12.0-0 Be6; 7...c5 8.c4 Be6 9.Qc2 Nf6 10.Nf3 dc4 11.Bc4 Nc4 12.Nc4 Qd5) 8.Nf3 g6 9.Ne5 Bg7 10.Nd7 Qd7 11.Bc3 b6 12.Ba5 ba5; B) 7.Be2 cb5 (7...Nf6 8.Nf3 g6 9.Ne5 Bg7 10.h4 c5 11.Bf3 Bf5 12.h5 Ne4; 7...e6 8.Nf3 Nf6 9.0-0 Bd6 10.Ne5 0-0 11.f4 Ne4 12.d3 Nc5) 8.ab5 Nf6 9.Nf3 e6 10.Ne5 Bd6 11.Bd3 Qc7 12.Nd7 Qd7; C) 7.Nh3 Qc7 (7...Nf6 8.Bd3 Qc7 9.bc6 bc6 10.Rb1 e5 11.Ng5 h6 12.Nf3 Bd6; 7...e6 8.Nf4 Nf6 9.Bd3 Bd6 10.Nh5 Nh5 11.Qh5 e5 12.h4 g6; 7...cb5 8.Bb5 Nf6 9.Nf4 a6 10.Bd7 Qd7 11.0-0 e6 12.Bc3 Nc6; 7...Bh3 8.gh3 Nf6 9.Bd3 e6 10.Rg1 c5 11.Qf3 c4 12.Be2 Ne4; 7...Bf5 8.g4 Bg6 9.Nf4 Nf6 10.d3 e6 11.g5 Nd7 12.Qd2 Nc5) 8.Bd3 Nf6 9.0-0 Bg4 10.Qe1 Bh3 11.gh3 e6 12.f4 Bb4; D) 7.Ne2 Nf6 (7...e6 8.Nf4 Nf6 9.Bd3 Bb4 10.Nh5 Rg8 11.0-0 cb5 12.ab5 h6; 7...cb5 8.ab5 Nf6 9.Nf4 e6 10.Bd3 Bb4 11.Nh5 Rg8 12.0-0 h6; 7...Qc7 8.Ng3 Nf6 9.Bd3 h5 10.h3 h4 11.Ne2 e5 12.Nc3 Be7) 8.Nf4 Qc7 9.Bd3 e5 10.Nh5 Rg8 11.h3 e4 12.bc6 Qc6; E) 7.Nf3 Nf6 (7...h5 8.Bd3 Nf6 9.Ne5 g5 10.Bc3 Bg7 11.Nd7 Kd7 12.Qf3 e6; 7...Bf5 8.Be2 Nf6 9.Nh4 Bd7 10.0-0 cb5 11.ab5 g6 12.Nb1 Bg7; 7...h6 8.Bd3 Nf6 9.0-0 g6 10.Ne5 Bg7 11.Nd7 Qd7 12.Bc3 b6) 8.Ne5 g6 9.Bd3 Bg7 10.Bc3 0-0 11.0-0 Be6 12.f4 Ne4.

6.Na3 e6 7.bc6 Nc6 (7...bc6 8.Nf3 Nf6 9.Bd3 Rb8 10.Be5 Rb4 11.c3 Rb7 12.0-0 Bc5; 7...Bc6 8.Nb5 a6 9.Nd4 Nf6 10.Ngf3 Bb4 11.Bd3 0-0 12.Nc6 Nc6) 8.Nf3 Nf6 9.Nb5 Bc5 10.Bd3 0-0 11.0-0 a6 12.Nbd4 Ne4.

6.Na3 e6 7.Bd3 Nf6 (7...Qc7 8.f4 Nf6 9.Nf3 Be7 10.Ne5 0-0 11.0-0 c5 12.Bc3 c4; 7...cb5 8.Nb5 Nc4 9.Bc4 dc4 10.Nf3 Nf6 11.0-0 a6 12.Na3 b5; 7...c5 8.Nf3 c4 9.Be2 Nf6 10.0-0 Bb4 11.Ne5 0-0 12.Bc3 Qe7; 7...f5 8.bc6 Nc6 9.Nb5 e5 10.c4 a6 11.Nc3 d4 12.Nd5 Nf6; 7...a6 8.Nf3 Nf6 9.Ne5 Bd6 10.0-0 0-0 11.ba6 ba6 12.Bc3 Qc7) 8.Nf3 Bd6 9.Ne5 c5 10.c4 0-0 11.Nd7 Nd7 12.cd5 Ne5.

6.Na3 e6 7.Be2 Nf6 8.Nf3 Bb4 9.0-0 0-0 10.d3 a6 11.Ne5 ab5 12.ab5 Qe7.

6.Na3 e6 7.Nf3 Nf6 (7...f5 8.Bd3 Nf6 9.0-0 Bb4 10.Qb1 Qe7 11.bc6 bc6 12.Bc3 Rb8; 7...h5 8.Bd3 Nf6 9.0-0 h4 10.Ng5 c5 11.c4 Bd6 12.f4 Kf8; 7...c5 8.Ne5 Nf6 9.c4 Bd6 10.Bd3 0-0 11.Nd7 Nd7 12.cd5 Ne5; 7...cb5 8.Nb5 Nf6 9.Be5 Rc8 10.Na7 Rc5 11.Nb5 Be7 12.Nd6 Bd6; 7...a6 8.ba6 Nf6 9.Bd3 ba6 10.0-0 Bd6 11.Rb1 0-0 12.Ne5 Rb8) 8.Be2 (8.Bd3 Bd6 9.Ne5 Qc7 10.f4 0-0 11.Bc3 c5 12.0-0 c4) 8...Ne4 (8...Bd6 9.0-0 Qc7 10.Bd3 e5 11.h3 0-0 12.Rb1 e4) 9.0-0 f6 (9...Bb4 10.Bg7 Rg8 11.Bb2 Qb6 12.d3 Nc3) 10.d3 (10.Nd4 c5 11.d3 Nd6 12.Nb3 Nb3) 10...Ng5? (better is 10...Nc5 11.c4 (11.bc6 bc6 12.Bc3 Na4) 11...dc4 (11...Be7 12.bc6 Bc6) 12.Nc4 Nc4+= (12...cb5 13.ab5 Nc4 14.dc4 e5=)) 11.Ng5+- fg5 12.Bh5 g6? (better is 12...Ke7+-) 13.Bh8 Bd6 (13...Ba3 14.Ra3 Qe7 15.Ra2 gh5 16.Qh5 Qf7 17.Qg5+-) 14.Be2 e5 15.bc6 Bc6 (15...bc6 16.d4 Qe7 17.Qd2+-) 16.d4 e4 17.Nb5 Kd7 (17...Nc4 18.Bc4 dc4 19.Qg4 Bb5 20.ab5+-) 18.Be5 Be5 19.de5 h5 20.Qd4 Ke6 21.f3 Qe7 (21...Qb8+-) 22.fe4 de4 (22...Rf8+-) 23.Nc7! Qc7 (23...Qc7 24.Rf6 Mate attack) 24.Rf6 Ke7 25.Qc5 Kd8 26.Rd1 1–0. marere – uxu, internet, 2011.

6.Na3 Bf5 A) 7.Be2 Nf6 (7...e6 8.Nf3 Nf6 9.0-0 Bd6 10.Nd4 0-0 11.f4 Re8 12.d3 Bb4; 7...a6 8.Nf3 ab5 9.ab5 Nf6 10.0-0 g6 11.Nd4 Bd7 12.c4 c5; 7...cb5 8.Bb5 Nc6 9.Nf3 Nf6 10.Nd4 Bd7 11.0-0 Qc7 12.Bd3 a6; 7...Qd6 8.Nf3 Nf6 9.bc6 Nc6 10.Nb5 Qd7 11.Nh4 a6 12.Nf5 ab5; 7...c5 8.Nf3 Nf6 9.0-0 g6 10.Nh4 Be6 11.f4 Bg7 12.f5 Bc8; 7...Qc7 8.Nf3 Nf6 9.bc6 Nc6 10.Nb5 Qb6 11.0-0 a6 12.Nbd4 Qb2; 7...h6 8.Nf3 Nf6 9.0-0 Rc8 10.h3 e6 11.Nd4 Bg6 12.Bc3 Ne4; 7...h5 8.Nf3 Nf6 9.0-0 c5 10.h3 Qb6 11.d3 e6 12.Nh4 Bh7; 7...Rc8 8.Nf3 Nf6 9.0-0 e6 10.Nd4 Bd6 11.Nf5 ef5 12.bc6 Nc6; 7...Qb6 8.Nf3 Nf6 9.0-0 g6 10.Nd4 Rg8 11.d3 a6 12.Qd2 ab5) 8.Nf3 e6 9.Nd4 Bd6 10.0-0 0-0 11.f4 Ne4 12.d3 Nc5; B) 7.Nf3 Nf6 (7...e6 8.Nd4 Nh6 9.Bc3 Rc8 10.bc6 Nc6 11.Nab5 Qd7 12.Be2 e5) 8.Nh4 Bg6 9.bc6 Nc6 10.Ng6 hg6 11.Nb5 a6 12.Nd4 Qd6; C) 7.Ne2 Nf6 (7...Nh6 8.Nd4 Bd7 9.Be2 e5 10.Nf3 f6 11.0-0 Nf5 12.d3 Kf7) 8.f3 e6 9.Nd4 Bg6 10.bc6 bc6 11.Bd3 Bd3 12.cd3 e5; D) 7.h3 Nf6 (7...Rc8 8.Ne2 Nf6 9.Nd4 Bd7 10.Be2 c5 11.Nf3 g6 12.Ne5 Bg7; 7...e6 8.Nf3 Nf6 9.Nd4 Bg6 10.Bd3 Bd6 11.0-0 0-0 12.bc6 bc6; 7...a6 8.Nf3 ab5 9.ab5 Nf6 10.Be2 e6 11.Nd4 Bd6 12.Nf5 ef5; 7...Be4 8.d3 Bf5 9.Nf3 Nf6 10.Bc3 c5 11.Be2 e6 12.e4 Bg6; 7...Qb6 8.Nf3 Nf6 9.Bd3 Bd3 10.cd3 e6 11.0-0 Bd6 12.Qc2 0-0; 7...h6 8.Nf3 Nf6 9.Nd4 Be4 10.f3 Bg6 11.bc6 bc6 12.Bd3 Bd3; 7...h5 8.Nf3 Nf6 9.Be2 e6 10.0-0 Bd6 11.d3 0-0 12.Nh4 Bh7) 8.Nf3 e6 9.Nd4 Be4 10.f3 Bg6 11.bc6 bc6 12.Bd3 Bd3; E) 7.g4 Bg6 (7...Be4 8.Nf3 e6 9.d3 Bf3 10.Qf3 Rc8 11.Qf4 Bd6 12.Qf3 Bf8) 8.Nf3 Nf6 9.Ne5 e6 10.Bg2 Bb4 11.0-0 0-0 12.Qe2 Qe7; F) 7.bc6 bc6 (7...Nc6 8.Nf3 Nf6 9.Bd3 Ne4 10.0-0 h5 11.Nd4 Nd4 12.Bd4 a6) 8.Nf3 Nf6 9.Bd3 Bd3 10.cd3 e6 11.Ne5 Rb8 12.Bc3 Ba3; G) 7.Bd3 Bd3 (7...Nh6 8.Nf3 Bd3 9.cd3 Nf5 10.0-0 e6 11.e4 de4 12.de4 Nh4; 7...e6 8.Bf5 ef5 9.Qf3 Nf6 10.Qf5 Bd6 11.Nf3 0-0 12.0-0 Re8; 7...Be4 8.Nf3 Nf6 9.0-0 e6 10.Be4 de4 11.Ne5 Bb4 12.Nac4 Nc4) 8.cd3 Nf6 9.Nf3 e6 10.bc6 bc6 11.0-0 Bd6 12.Qc2 0-0.

6.Na3 Nf6 A) 7.Nf3 g6 (7...Bf5 8.Ne5 e6 9.Bd3 Bd3 10.cd3 Bd6 11.Ng4 h5 12.Nf6 gf6; 7...Ne4 8.Ne5 e6 9.Bd3 Qh4 10.Be4 Qe4 11.0-0 f6 12.d3 Qh4; 7...e6 8.Ne5 Qc7 9.Bd3 Bd6 10.f4 0-0 11.0-0 Ne4 12.Be4 de4; 7...cb5 8.ab5 Ne4 9.Ne5 e6 10.Bd3 Qh4 11.Be4 Qe4 12.0-0 Bd6) 8.bc6 Nc6 9.c4 e6 10.g4 h6 11.Nb5 Be7 12.h4 a6; B) 7.Nh3 Bh3 (7...Rc8 8.Bd3 cb5 9.ab5 Bg4 10.f3 Bh3 11.gh3 Qd7 12.Bd4 Qh3; 7...Ne4 8.Bd3 Bh3 9.gh3 e6 10.Rg1 Qc7 11.f4 Qe7 12.Be4 de4; 7...e6 8.Bd3 Bd6 9.Qf3 0-0 10.0-0 e5 11.Qg3 Qe7 12.f4 e4; 7...g6 8.Nf4 Bg7 9.Bd3 Qc7 10.h4 0-0 11.h5 Nh5 12.Bg7 Ng7; 7...Qc7 8.Bd3 g6 9.bc6 bc6 10.0-0 Rb8 11.Rb1 Bg4 12.Qc1 Bg7; 7...cb5 8.Bb5 a6 9.Bd7 Qd7 10.0-0 Qa4 11.Nb1 Qb5 12.Bf6 gf6; 7...Bg4 8.Be2 Be2 9.Qe2 e6 10.Nf4 Bd6 11.0-0 0-0 12.f3 a6; 7...h6 8.Nf4 Qc7 9.Bd3 e5 10.Nh5 Nh5 11.Qh5 Bd6 12.f4 0-0; 7...Bf5 8.Nf4 e6 9.Bd3 Bd3 10.cd3 Bd6 11.0-0 0-0 12.Bc3 Rc8; 7...a6 8.Nf4 Qc7 9.Be2 e5 10.b6 Qd6 11.Nd3 e4 12.Ne5 Qb4; 7...Rg8 8.Bd3 g5 9.Bf6 ef6 10.Qh5 Rh8 11.f4 Bd6 12.fg5 Qe7; 7...Qb8 8.Bd3 e5 9.Bc3 Qc7 10.bc6 bc6 11.f4 e4 12.Be2 Rb8) 8.gh3 Ne4 9.Bd3 e6 10.Rg1 Qd6 11.Rg2 Rg8 12.bc6 Nc6; C) 7.Be2 g6 (7...cb5 8.ab5 e6 9.Nf3 Bb4 10.0-0 0-0 11.c4 Qe7 12.Ne5 Rfc8; 7...e6 8.Nf3 Qc7 9.Ne5 Bd6 10.f4 0-0 11.0-0 Ne4 12.d3 Nc5; 7...Qc7 8.Nf3 e6 9.Ne5 Bd6 10.f4 0-0 11.0-0 Ne4 12.d3 Nc5; 7...c5 8.Nf3 g6 9.Ne5 Bg7 10.h4 Be6 11.Nd3 c4 12.Ne5 Qc7) 8.Nf3 Bg7 9.Ne5 0-0 10.0-0 Qc7 11.d3 Bf5 12.Qd2 a6; D) 7.bc6 Nc6 (7...bc6 8.Nf3 Ne4 9.Bd3 Rb8 10.Be5 Rb4 11.0-0 f6 12.Bc3 Ra4; 7...Bc6 8.Nf3 e6 9.Nb5 a6 10.Nbd4 Bd6 11.Bd3 0-0 12.0-0 Ne4) 8.Nf3 e6 9.Bd3 Bc5 10.Nb5 0-0 11.0-0 Ne4 12.Qe2 f5; E) 7.Bd3 g6 (7...c5 8.Nf3 c4 9.Be2 e6 10.Ne5 Bb4 11.0-0 0-0 12.Bc3 Qe7; 7...cb5 8.ab5 g6 9.Ne2 Bh6 10.Nf4 0-0 11.0-0 d4 12.Ne2 e5; 7...Ne4 8.Nf3 Bg4 9.h3 Bh5 10.bc6 bc6 11.0-0 Bf3 12.gf3 Nc5; 7...e6 8.Nf3 Qc7 9.Ne5 Bd6 10.Ng4 e5 11.Nf6 gf6 12.Qh5 Rg8; 7...Qc7 8.Nf3 e6 9.Ne5 Bd6 10.f4 0-0 11.0-0 Ne4 12.Be4 de4) 8.Nf3 Bg7 9.0-0 0-0 10.h3 cb5 11.ab5 Rc8 12.Qe2 Ne4.

6.Na3 h5 A) 7.Bd3 h4 (7...Nf6 8.Nf3 g6 9.0-0 Bg7 10.Be5 0-0 11.Ng5 Ng4 12.Bg7 Kg7; 7...c5 8.Nf3 Nf6 9.Ne5 c4 10.Be2 h4 11.Bf3 e6 12.h3 Bd6; 7...cb5 8.ab5 Nf6 9.Nf3 e6 10.Ne5 Bd6 11.Qf3 Qc7 12.Nd7 Nd7) 8.Nf3 h3 9.gh3 Nf6 10.Ng5 Bh3 11.Nh3 Rh3 12.Bf6 gf6; B) 7.Be2 cb5 (7...Nf6 8.Nf3 g6 9.bc6 Nc6 10.c4 e6 11.0-0 Be7 12.cd5 ed5; 7...h4 8.Nf3 h3 9.g3 Nf6 10.Ne5 e6 11.Bd3 Bd6 12.Qf3 Qe7; 7...e6 8.Nf3 Nf6 9.Ne5 h4 10.Bd3 Bd6 11.Qf3 c5 12.Bc3 c4; 7...Bg4 8.Bg4 hg4 9.Qg4 Nf6 10.Bf6 ef6 11.Nf3 Qd7 12.Qg3 Qd6; 7...Qb6 8.Nf3 Nf6 9.Ne5 Bf5 10.0-0 h4 11.h3 e6 12.Rb1 c5; 7...Rc8 8.Nf3 Nf6 9.Ne5 Bf5 10.0-0 e6 11.Ra2 h4 12.h3 Bd6; 7...a6 8.Nf3 Nf6 9.Ne5 ab5 10.ab5 h4 11.h3 Bf5 12.0-0 Qb6) 8.ab5 Nf6 9.Nf3 h4 10.Ne5 h3 11.g3 e6 12.c4 Ne4; C) 7.Ne2 Nf6 (7...Qc7 8.bc6 bc6 9.f4 Nf6 10.Be5 Qc8 11.Ra2 h4 12.h3 Ne4; 7...h4 8.Nf4 Nf6 9.Bd3 Qc7 10.Bf6 gf6 11.Qf3 Rg8 12.h3 f5; 7...a6 8.Nf4 Nf6 9.ba6 ba6 10.Be2 Qc7 11.0-0 h4 12.Rb1 h3; 7...cb5 8.ab5 Nf6 9.Nf4 e6 10.Qf3 Bb4 11.Bd3 Rc8 12.h4 Qe7; 7...e6 8.Nf4 Nf6 9.Be2 Bd6 10.0-0 h4 11.c4 0-0 12.Bd3 e5; 7...Qb6 8.Nf4 Nf6 9.Be2 h4 10.bc6 bc6 11.Be5 Bf5 12.Bd3 Bd3; 7...Rc8 8.Nf4 Nf6 9.Bd3 h4 10.Bd4 Qc7 11.Bf6 gf6 12.h3 Rg8; 7...Rh6 8.Nf4 Nf6 9.Be2 h4 10.bc6 bc6 11.Be5 Bf5 12.Bd3 Bd3) 8.Nf4 Qc7 9.Be2 h4 10.Nh5 h3 11.Nf6 gf6 12.g3 Bg7; D) 7.Nh3 Nf6 (7...e6 8.Bd3 Nf6 9.0-0 Bd6 10.f4 0-0 11.Ng5 g6 12.Ra2 c5; 7...h4 8.Bd3 Nf6 9.Ng5 h3 10.g3 c5 11.Qf3 Qc7 12.Qf4 Qf4; 7...Qc7 8.Ng5 f6 9.Nh3 Nh6 10.Nf4 Ng4 11.h3 Ne5 12.d4 Nac4; 7...Bg4 8.Be2 Nf6 9.Ng5 e6 10.h3 Bf5 11.0-0 Bd6 12.Bc3 h4; 7...cb5 8.ab5 Nf6 9.Nf4 e6 10.Qf3 Bb4 11.Bd3 Rh6 12.0-0 g5; 7...Bf5 8.Bd3 Bd3 9.cd3 e6 10.0-0 Nf6 11.Ng5 Bd6 12.f4 Qe7; 7...Bh3 8.gh3 Nf6 9.Qf3 e6 10.Bd3 Bb4 11.Rg1 Ne4 12.c3 Bf8; 7...a6 8.Bd3 Nf6 9.Ng5 ab5 10.ab5 c5 11.0-0 c4 12.Be2 Bf5; 7...Rc8 8.Nf4 Nf6 9.Bd3 h4 10.h3 Qc7 11.Bf6 gf6 12.0-0 Bg7; 7...Qb6 8.Nf4 Nf6 9.Bd3 Qc7 10.Bf6 gf6 11.0-0 h4 12.h3 f5) 8.Bd3 e6 9.0-0 Bd6 10.f4 c5 11.c4 0-0 12.cd5 ed5; E) 7.Be5 Nf6 (7...h4 8.Nf3 Nf6 9.h3 Ne4 10.d3 Nc5 11.Qd2 f6 12.Bc3 b6; 7...c5 8.Nf3 Nf6 9.Be2 Ng4 10.Bb2 Qc7 11.h3 Nf6 12.Be5 Qb6) 8.Be2 g6 9.Nf3 Bg7 10.0-0 0-0 11.Ng5 Ne4 12.Bg7 Kg7; F) 7.Bd4 c5 (7...Nf6 8.Nf3 e6 9.Bd3 c5 10.Be5 c4 11.Be2 Bb4 12.0-0 Qe7; 7...Rc8 8.Nf3 Nf6 9.Ne5 c5 10.Bc3 Ne4 11.Qf3 f6 12.Nd7 Kd7; 7...e6 8.Nf3 Nf6 9.Ne5 c5 10.Bc3 Ne4 11.Qf3 f6 12.Nd7 Kd7; 7...Bg4 8.Nf3 Nf6 9.h3 Bf5 10.Bd3 Bd3 11.cd3 e6 12.0-0 Bd6; 7...Qc7 8.Nf3 Nf6 9.Bd3 e6 10.bc6 bc6 11.0-0 Ng4 12.h3 e5; 7...Bf5 8.Bd3 Bd3 9.cd3 Nf6 10.Nf3 e6 11.0-0 Bd6 12.bc6 bc6; 7...b6 8.Nf3 c5 9.Be5 Nh6 10.Be2 Ng4 11.Bb2 e6 12.h3 Nf6) 8.Bc5 Nf6 9.Nf3 g6 10.Bd3 Bg7 11.0-0 Ne4 12.Bd4 0-0; G) 7.h3 Nf6 (7...cb5 8.Nb5 a6 9.Nd4 e5 10.Ndf3 f6 11.Ne2 Bd6 12.Ba3 Ba3; 7...Bf5 8.Nf3 Nf6 9.Be2 e6 10.Nd4 Bg6 11.bc6 bc6 12.Bc3 Bc5; 7...a6 8.Nf3 Nf6 9.Ne5 Bf5 10.Be2 Qd6 11.0-0 h4 12.ba6 ba6; 7...Qb6 8.Nf3 Nf6 9.Ne5 Bf5 10.Rb1 Qc5 11.Bd3 Ne4 12.Be2 Rh6; 7...h4 8.Nf3 Nf6 9.Bd3 Ne4 10.0-0 f6 11.Qe2 Kf7 12.bc6 bc6) 8.Nf3 Ne4 9.Bd3 cb5 10.ab5 f6 11.0-0 e5 12.Nh4 Bc5; H) 7.Nf3 Nf6 (7...e6 8.Bd3 Nf6 9.Ne5 h4 10.Qf3 Bd6 11.Bc3 c5 12.h3 c4; 7...h4 8.Bd3 h3 9.g3 Bg4 10.Be2 Nf6 11.Ne5 Be2 12.Qe2 e6 ; 7...c5 8.Be2 Nf6 9.0-0 g6 10.c4 Bf5 11.d4 Rc8 12.Rc1 Bg7; 7...Rc8 8.Ne5 Nf6 9.Bd3 g5 10.h4 g4 11.0-0 Rg8 12.Nd7 Qd7; 7...a6 8.Bd3 Nf6 9.Ne5 ab5 10.ab5 c5 11.c4 Be6 12.Qc2 Nc4; 7...Nh6 8.Bd3 Ng4 9.0-0 c5 10.h3 c4 11.Be2 Nf6 12.d3 cd3; 7...cb5 8.Nb5 a6 9.Nbd4 Qc7 10.Nb3 Nf6 11.Be5 Qb6 12.Rb1 Ne4; 7...Rh6 8.Ne5 Nf6 9.Bd3 Qc7 10.0-0 h4 11.Nd7 Nd7 12.bc6 bc6; 7...b6 8.bc6 Nc6 9.c4 e6 10.cd5 ed5 11.Nb5 Nf6 12.Rc1 a6; 7...Rb8 8.Bd3 Nf6 9.Ne5 e6 10.0-0 Bd6 11.Qf3 h4 12.h3 Qc7) 8.Ne5 e6 9.Bd3 h4 10.Qf3 Bd6 11.h3 Qc7 12.Nd7 Qd7.

6.Nc3 cb5 7.ab5 (7.Nf3 ba4 8.Ne5 Nf6 9.Nd7 Qd7 10.Bb5 Nc6 11.Na4 Qc7 12.Qf3 e6) 7...Nf6 (7...e6 8.Nf3 Nf6 9.Ra4 Bd6 10.Qa1 b6 11.Bd3 0-0 12.0-0 Qc7; 7...Nc4 8.Bc4 dc4 9.Nf3 Nf6 10.Ne5 Qc7 11.f4 g6 12.Nd7 Qd7) 8.Nf3 e6 9.Ra4 Bd6 10.Qa1 b6 11.Bd3 0-0 12.0-0 Qc7.

6.Nc3 Qc7 A) 7.Bd3 Nf6 (7...a6 8.ba6 ba6 9.Nf3 Nf6 10.Ne2 e6 11.0-0 Bd6 12.Rb1 e5; 7...Qd6 8.Nf3 Nf6 9.0-0 c5 10.e4 Bg4 11.h3 c4 12.Be2 de4; 7...h5 8.Nf3 Nf6 9.0-0 c5 10.Re1 c4 11.Bf1 h4 12.h3 Bf5; 7...h6 8.Nf3 Nf6 9.0-0 c5 10.h3 e5 11.Rb1 e4 12.Nd5 Nd5; 7...Rd8 8.Nf3 Nf6 9.0-0 c5 10.Re1 e6 11.g3 c4 12.Bf1 Bc5; 7...e6 8.Nf3 Nf6 9.0-0 c5 10.Re1 Be7 11.Ba3 0-0 12.h3 Rfe8; 7...Rb8 8.Nf3 Nf6 9.0-0 e6 10.Qe2 c5 11.Qe1 c4 12.Be2 Bd6; 7...Nc4 8.Bc4 dc4 9.Qe2 a6 10.ba6 Ra6 11.Nf3 Nf6 12.0-0 e5; 7...Rc8 8.Nf3 Nf6 9.0-0 c5 10.Re1 e6 11.h3 c4 12.Bf1 Bc5; 7...f5 8.Nf3 Nf6 9.Nd4 e5 10.Nb3 Nc4 11.Qc1 Kf7 12.0-0 Bd6; 7...e5 8.Nh3 Bh3 9.gh3 e4 10.Be2 Nf6 11.Rc1 Be7 12.Rg1 0-0) 8.Nf3 a6 9.0-0 e5 10.e4 Bd6 11.Ba3 0-0 12.b6 Qb8; B) 7.Be2 e6 (7...Nf6 8.Nf3 e6 9.0-0 Bd6 10.g3 0-0 11.Re1 e5 12.d3 h6; 7...e5 8.Nf3 Nf6 9.bc6 bc6 10.d4 Rb8 11.de5 Ng4 12.Rb1 Bc5; 7...a6 8.Nf3 Nf6 9.0-0 Nc4 10.Bc4 dc4 11.Qe2 cb5 12.ab5 Rb8) 8.Nf3 Nf6 9.bc6 bc6 10.0-0 Rb8 11.Rb1 Bd6 12.h3 0-0; C) 7.Nf3 Rd8 (7...Nf6 8.Bd3 Rd8 9.0-0 Nc4 10.Bc4 dc4 11.h3 e6 12.Qe2 Bd6; 7...a6 8.Bd3 Nf6 9.ba6 ba6 10.0-0 e5 11.e4 Bd6 12.Rb1 0-0; 7...h5 8.Bd3 Nf6 9.0-0 Nc4 10.Bc4 dc4 11.Qe2 h4 12.bc6 Qc6; 7...h6 8.Bd3 Nf6 9.0-0 c5 10.Rb1 e6 11.b6 ab6 12.Nb5 Bb5; 7...Qd6 8.Ba3 Qc7 9.bc6 bc6 10.d4 Nf6 11.Ne5 e6 12.Bf8 Kf8; 7...f5 8.Bd3 Nf6 9.0-0 e6 10.Rc1 Bd6 11.bc6 bc6 12.Rb1 e5) 8.d4 Nf6 9.Ne5 g6 10.Bd3 Bg7 11.Qf3 Be6 12.0-0 0-0.

6.Nc3 e6 A) 7.Bd3 Nf6 8.Nf3 Bd6 9.bc6 Bc6 10.Qe2 0-0 11.0-0 Ne4 12.Nd4 Nc5; B) 7.bc6 Bc6 (7...bc6 8.Nf3 Nf6 9.Bd3 Rb8 10.Rb1 Bd6 11.Ne2 0-0 12.0-0 Qe7; 7...Nc6 8.Nf3 Nf6 9.Bd3 Bc5 10.0-0 0-0 11.Nb5 Ne4 12.Qe2 Nb4) 8.Nf3 Nf6 9.Ne5 Bc5 10.Bd3 Nc4 11.Bc4 dc4 12.0-0 Qe7; C) 7.f4 Nf6 (7...cb5 8.ab5 Nh6 9.Nf3 Nf5 10.Bd3 Nd6 11.Ne5 Nac4 12.Bc4 Nc4; 7...Nh6 8.Nf3 Nf5 9.Bd3 Bc5 10.0-0 0-0 11.bc6 Bc6 12.Ne5 f6; 7...Ne7 8.Nf3 Nf5 9.Bd3 Bc5 10.0-0 0-0 11.Ne5 f6 12.Nd7 Qd7; 7...Bb4 8.Nd5 ed5 9.Bg7 Qh4 10.g3 Qe7 11.c3 Qe4 12.cb4 Qh1) 8.Nf3 Bd6 9.Bd3 0-0 10.0-0 Qc7 11.Ba3 c5 12.Ne5 Rac8; D) 7.Be2 Nf6 (7...Qc7 8.f4 Nf6 9.Nf3 Bd6 10.0-0 0-0 11.Ba3 c5 12.Ne5 b6; 7...Qb6 8.Nf3 Nf6 9.0-0 Bd6 10.bc6 Nc6 11.Nb5 Bb4 12.Ng5 h6) 8.Nf3 Bd6 9.0-0 0-0 10.h3 Qc7 11.Bd3 c5 12.Re1 c4; E) 7.Nh3 Nf6 (7...cb5 8.ab5 Nf6 9.Nf4 Bd6 10.Ba3 Ba3 11.Ra3 0-0 12.Qa1 b6; 7...Be7 8.Qg4 g6 9.Qf4 Nf6 10.Be2 0-0 11.0-0 Re8 12.Qh6 Bf8; 7...a6 8.ba6 ba6 9.Rb1 Nf6 10.Bd3 Bc5 11.Qe2 0-0 12.0-0 e5) 8.Nf4 e5 9.Nh5 Ng4 10.bc6 bc6 11.h3 Qh4 12.Ng3 Nf6; F) 7.Qf3 Nf6 8.Qg3 Bc5 9.Nf3 0-0 10.Ne5 Bd6 11.f4 cb5 12.ab5 Nh5; G) 7.Qg4 Nh6 (7...Nf6 8.Qg3 g6 9.Nf3 Nh5 10.Qh3 e5 11.g4 Bd6 12.Qg2 Nf6; 7...Qc7 8.Nf3 Nf6 9.Qh4 Be7 10.Bd3 h6 11.bc6 bc6 12.Ne2 0-0) 8.Qh5 g6 9.Qf3 Bg7 10.Bd3 e5 11.bc6 bc6 12.Be2 0-0; H) 7.Nf3 Nf6 (7...Qc7 8.bc6 bc6 9.Bd3 Nf6 10.0-0 Rb8 11.Rb1 Bd6 12.e4 0-0; 7...c5 8.Ne5 Nf6 9.f4 Bd6 10.Bd3 Qc7 11.Nd7 Qd7 12.Qf3 c4) 8.Ne5 Bd6 9.f4 Qc7 10.Bd3 Be5 11.fe5 Qe5 12.0-0 0-0.

6.Nc3 Nf6 7.Nf3 Qc7 (7...h5 8.Ne5 Ng4 9.Ng4 hg4 10.Be2 Nc4 11.Bc4 dc4 12.Qe2 Rc8; 7...cb5 8.ab5 e6 9.Bd3 Qc7 10.0-0 Bd6 11.Ba3 Ba3 12.Ra3 0-0; 7...g6 8.Ne5 Qc7 9.f4 Bg7 10.Bd3 Nc4 11.Nc4 dc4 12.Bc4 0-0; 7...Qb6 8.Ne5 e6 9.Bd3 Bd6 10.f4 0-0 11.Qf3 cb5 12.ab5 Rad8; 7...e6 8.Bd3 Bd6 9.0-0 0-0 10.Ba3 c5 11.Qe2 Qb6 12.Qd1 e5; 7...Bc8 8.Bd3 Qd6 9.bc6 bc6 10.Ba3 Qc7 11.0-0 e5 12.Bf8 Kf8; 7...c5 8.Ne5 Qc7 9.Nd7 Qd7 10.Qf3 e6 11.Bd3 c4 12.Be2 Bd6) 8.Bd3 Nc4 9.Bc4 dc4 10.Qe2 cb5 11.Nb5 Bb5 12.ab5 Qc5.

6.Nc3 h5 A) 7.f4 Qc7 (7...Nf6 8.Nf3 Rh6 9.h3 Qb6 10.Ne5 Bf5 11.Ne2 Bh7 12.Rb1 c5; 7...Qb6 8.Nf3 Nf6 9.Bd3 Nc4 10.Bc4 dc4 11.0-0 h4 12.Ne5 h3; 7...Rb8 8.Nf3 Nf6 9.Bd3 c5 10.Ne5 Bg4 11.Ng4 hg4 12.0-0 Qd7; 7...Rh6 8.Nf3 Nf6 9.Bd3 Nc4 10.Bc4 dc4 11.Qe2 a6 12.bc6 Bc6; 7...Bg4 8.Nf3 Nf6 9.h3 Bf5 10.Bd3 Bd3 11.cd3 e6 12.0-0 Bd6; 7...c5 8.Nf3 Nf6 9.Bd3 c4 10.Be2 h4 11.h3 e6 12.0-0 Bd6; 7...Rc8 8.Nf3 Nf6 9.Bd3 Nc4 10.Bc4 dc4 11.Qe2 cb5 12.ab5 Qb6; 7...Nh6 8.Qh5 Bg4 9.Qg5 e6 10.Qd8 Rd8 11.Nf3 Bf3 12.gf3 Nf5; 7...cb5 8.ab5 Nf6 9.Nf3 Qb6 10.Bd3 Rc8 11.Ne5 Bg4 12.Qb1 Nc4; 7...Qc8 8.Nf3 Nf6 9.Ne5 Ng4 10.Nd7 Qd7 11.h3 Nf6 12.Qf3 h4; 7...Bc8 8.Nf3 Nf6 9.Bd3 Nc4 10.Bc4 dc4 11.Qe2 cb5 12.ab5 Bf5; 7...e6 8.Nf3 Nf6 9.Ne5 Bc5 10.Qf3 0-0 11.Bd3 d4 12.Ne2 de3) 8.Nf3 Nf6 9.Be2 c5 10.0-0 h4 11.h3 Bf5 12.Rc1 d4; B) 7.Nh3 Nf6 (7...e5 8.Bd3 Nf6 9.Ng5 e4 10.Be2 Ng4 11.h4 Bd6 12.Ba3 Bf5; 7...Bg4 8.f3 Bh3 9.gh3 Nf6 10.Ra2 d4 11.Ne4 Qd5 12.Nf6 ef6; 7...Qc7 8.Be2 Nf6 9.Ng5 Nc4 10.Bc4 dc4 11.Qe2 cb5 12.ab5 Qc5; 7...e6 8.Nf4 Nf6 9.Be2 Nc4 10.Bc4 dc4 11.0-0 e5 12.Nfe2 h4; 7...Rb8 8.Ng5 e6 9.f4 Be7 10.Nf3 Nf6 11.Ne5 Bc5 12.Bd3 h4; 7...Rc8 8.Bd3 Nf6 9.Ng5 Nc4 10.Bc4 dc4 11.0-0 h4 12.h3 cb5; 7...h4 8.Bd3 Nf6 9.Ng5 Rh5 10.f4 h3 11.gh3 Bh3 12.Rg1 Rh4; 7...Bh3 8.gh3 Nf6 9.Qf3 e5 10.Be2 e4 11.Qg3 Nc4 12.Bc4 dc4; 7...Qb6 8.Nf4 Nf6 9.Be2 d4 10.ed4 Qd4 11.Nd3 Nc4 12.Ra2 a6) 8.Ng5 Qb6 9.Be2 Nc4 10.Bc4 dc4 11.0-0 cb5 12.Nb5 Bb5; C) 7.Bd3 Nf6 (7...Qc7 8.Nf3 Nf6 9.0-0 c5 10.Re1 e6 11.h3 Be7 12.Ng5 0-0; 7...Nc4 8.Bc4 dc4 9.Qe2 Rc8 10.Nf3 Nf6 11.Ne5 Qc7 12.f4 Ng4; 7...cb5 8.ab5 Nf6 9.Nf3 Qc7 10.Ra4 e6 11.0-0 Bd6 12.Qa1 Nc4; 7...Qb8 8.Nf3 Nf6 9.0-0 c5 10.h3 Qc7 11.Qe1 e6 12.Ng5 Bd6; 7...c5 8.Nf3 Nf6 9.Ne5 Qc7 10.Nd7 Qd7 11.0-0 e6 12.f4 Bd6; 7...e6 8.Nf3 Nf6 9.Ne5 Bd6 10.f4 Be5 11.fe5 Ng4 12.0-0 Ne5) 8.Nf3 Qb8 9.0-0 c5 10.h3 Qc7 11.Ng5 h4 12.f4 c4; D) 7.Be2 Nf6 (7...Bg4 8.Nf3 Nf6 9.0-0 Bf3 10.Bf3 Nc4 11.Rb1 Rb8 12.h3 e6; 7...e6 8.Nf3 Nf6 9.Ne5 Bd6 10.f4 Qc7 11.bc6 bc6 12.0-0 Be5; 7...cb5 8.ab5 Nf6 9.Nf3 e6 10.0-0 Qc7 11.Ra4 Bd6 12.Qa1 b6; 7...Qc7 8.Nf3 Nf6 9.0-0 c5 10.Re1 e6 11.Ng5 Bd6 12.f4 h4; 7...Rb8 8.Nf3 Qc7 9.Na2 f6 10.Nc3 Nh6 11.0-0 Kf7 12.Nd4 e5; 7...Nc4 8.Bc4 dc4 9.Qe2 a6 10.bc6 Bc6 11.Nf3 Nf6 12.Ne5 Qc7; 7...Qb8 8.Nf3 Nf6 9.0-0 e6 10.Ng5 Bd6 11.f4 0-0 12.bc6 Bc6; 7...Bf5 8.Nf3 Nf6 9.0-0 Nc4 10.Bc4 dc4 11.bc6 bc6 12.Ne5 Qc7; 7...h4 8.Nf3 Nf6 9.Ne5 e6 10.Bd3 Bd6 11.f4 Qc7 12.bc6 bc6; 7...Rc8 8.Nf3 Qc7 9.0-0 Nf6 10.h3 c5 11.Re1 e6 12.Ng5 Bd6) 8.Nf3 e6 9.Ne5 Bd6 10.f4 Qc7 11.bc6 bc6 12.0-0 h4; E) 7.h4 Bg4 (7...Nf6 8.Nf3 e6 9.bc6 Nc6 10.Be2 Qb6 11.Rb1 Qa5 12.0-0 Rc8; 7...Qc7 8.Be2 Nf6 9.Nf3 Rd8 10.d3 e6 11.0-0 Ng4 12.g3 Be7; 7...Rc8 8.Nf3 Nf6 9.Bd3 Bg4 10.bc6 bc6 11.0-0 e5 12.Be2 Rb8; 7...e6 8.bc6 Nc6 9.Nf3 Nf6 10.Bd3 Nb4 11.0-0 Ng4 12.Qe2 Be7; 7...Rb8 8.Nf3 Nf6 9.Ne5 Ng4 10.Nd7 Qd7 11.Be2 Nc4 12.Bc4 dc4; 7...Rh6 8.Nf3 Nf6 9.Bd3 Bg4 10.bc6 bc6 11.Rb1 Rb8 12.Qc1 Nc4; 7...Qb8 8.Nf3 Nf6 9.Bd3 Qd6 10.bc6 bc6 11.Ba3 Qc7 12.Qe2 e5) 8.Nf3 Nf6 9.Be2 Qc7 10.0-0 Nc4 11.Bc4 dc4 12.e4 e5; F) 7.g3 Qc7 (7...Nf6 8.Nf3 Qc7 9.Be2 a6 10.ba6 ba6 11.Rb1 Rb8 12.Ba6 Rb6; 7...e6 8.Nh3 Nf6 9.Ng5 Ng4 10.f4 Bb4 11.h3 Nf6 12.Bd3 h4; 7...h4 8.gh4 Nf6 9.Nf3 Bg4 10.Be2 Nc4 11.Ra2 cb5 12.ab5 Qd6; 7...cb5 8.ab5 Nf6 9.Nf3 e6 10.Ra4 Bd6 11.Qa1 b6 12.Ba3 Qb8; 7...Qb8 8.Nf3 Nf6 9.bc6 Nc6 10.Bg2 e5 11.0-0 Be7 12.Nh4 e4) 8.Nf3 Nf6 9.Rb1 c5 10.Be2 h4 11.gh4 Qd6 12.d4 c4; G) 7.bc6 bc6 (7...Nc6 8.Nf3 Nf6 9.Be2 h4 10.h3 e5 11.0-0 Be7 12.Ba3 e4) 8.Nf3 Nf6 9.Ne5 Ng4 10.Nd7 Qd7 11.Rb1 Rb8 12.Ba3 Rb1 H) 7.Rb1 e6 (7...Nf6 8.Nf3 e6 9.Bd3 Bd6 10.bc6 Bc6 11.Nb5 Nc4 12.Bc3 Ne4; 7...Qc7 8.bc6 bc6 9.Nf3 Nf6 10.Be2 e6 11.Ng5 Bd6 12.f4 Rb8; 7...Rb8 8.Nf3 Nf6 9.Bd3 Nc4 10.0-0 Nb2 11.Rb2 Qc7 12.bc6 bc6; 7...Bf5 8.Nf3 Nf6 9.Be2 c5 10.Nh4 Bg4 11.h3 Be2 12.Qe2 Nc4; 7...Nc4 8.Bc4 dc4 9.Nf3 Nf6 10.Ne5 cb5 11.Nb5 a6 12.Na3 Ba4; 7...c5 8.Nf3 Nf6 9.Bd3 Qc7 10.0-0 e6 11.h3 c4 12.Be2 Bc5; 7...Qc8 8.Nf3 Nf6 9.bc6 Nc6 10.Be2 e5 11.0-0 Be7 12.d4 ed4; 7...cb5 8.Bb5 Bb5 9.ab5 Nf6 10.Nf3 e6 11.0-0 Nc4 12.Qe2 Bc5; 7...Nh6 8.bc6 Nc6 9.Ba3 e5 10.Bf8 Kf8 11.Rb7 d4 12.Ne4 Bf5) 8.Nf3 Nf6 9.Ne5 Bd6 10.f4 Be5 11.fe5 Ng4 12.Qf3 Ne5; I) 7.Nf3 Nf6 (7...Qc7 8.Bd3 Nf6 9.0-0 h4 10.h3 c5 11.Re1 e6 12.Qb1 c4) 8.Ne5 Ng4 9.Nd7 Qd7 10.h3 Ne5 11.d3 e6 12.Be2 Bb4.

6.bc6 bc6 A) 7.Nf3 Nf6 (7...Qb6 8.Ba3 Nf6 9.Nc3 Qc7 10.Rb1 e5 11.Bf8 Kf8 12.d4 Bg4; 7...Rb8 8.Be5 Rb4 9.Nc3 f6 10.Bg3 e5 11.Rb1 Kf7 12.Ba6 Qb6; 7...Nh6 8.Nc3 Rb8 9.Rb1 g6 10.Nb5 f6 11.Nc3 Bg7 12.Bd3 e5; 7...Bf5 8.Nc3 Nf6 9.Rb1 Rb8 10.Be2 e6 11.Nd4 Bd6 12.0-0 0-0; 7...Rc8 8.Ne5 Nf6 9.Nc3 Rb8 10.Rb1 Be6 11.Bd3 g6 12.Ne2 Qd6; 7...e6 8.Be5 f6 9.Bg3 Nh6 10.Nc3 Be7 11.Rb1 0-0 12.Be2 Nf5; 7...h6 8.Be5 Nf6 9.Nc3 g6 10.Rb1 Bg7 11.Bd3 0-0 12.0-0 c5) 8.Be5 g6 9.Bd3 Bg7 10.Nc3 0-0 11.Rb1 Ng4 12.Bg7 Kg7; B) 7.Bd3 c5 (7...Nf6 8.Nf3 c5 9.Na3 c4 10.Be2 Nc6 11.Ne5 Qb8 12.Nd7 Qb2; 7...h5 8.Nf3 Nf6 9.Be5 Nc4 10.Bc4 dc4 11.Na3 Be6 12.0-0 Qd5; 7...Qb6 8.Be5 Nc4 9.Bc4 dc4 10.Nc3 f6 11.Rb1 Qc5 12.Bd4 Qf5; 7...Nh6 8.Na3 Rb8 9.Be5 Rb7 10.Nf3 f6 11.Bc3 e5 12.Ba6 Rb8; 7...Nb7 8.Nf3 Nc5 9.0-0 Nf6 10.Be5 Nd3 11.cd3 g6 12.Nc3 Bg7; 7...Qb8 8.Bc3 Nb7 9.Nf3 Nc5 10.Be5 Qc8 11.Nc3 Nd3 12.cd3 f6; 7...Nc4 8.Bc4 dc4 9.Na3 Be6 10.Nf3 Qd5 11.0-0 Nf6 12.Ne5 Rb8) 8.Nf3 Nf6 9.Bf6 gf6 10.Nc3 Bc6 11.Rb1 c4 12.Be2 Rg8; C) 7.Be5 f6 (7...Nh6 8.Nc3 Nf5 9.g4 Nd6 10.Nf3 Bg4 11.Rg1 Qd7 12.Bd6 ed6) 8.Bg3 e5 9.Nf3 Nh6 10.Nc3 Bc5 11.Rb1 0-0 12.d4 ed4; D) 7.Na3 Nf6 (7...Rb8 8.Be5 Rb4 9.Nf3 f6 10.Bd4 e5 11.Ne5 Rd4 12.Nd7 Ra4; 7...Bf5 8.Nf3 Nf6 9.Be5 e6 10.Bd3 Bd3 11.cd3 Bd6 12.Nc2 0-0; 7...h6 8.Nf3 Nf6 9.Bd3 Nb7 10.Bd4 e6 11.0-0 Nc5 12.Qe2 Rb8; 7...Nb7 8.Rb1 Nf6 9.Be2 Ne4 10.Nf3 Nbd6 11.Ne5 Rb8 12.0-0 Qa5; 7...e6 8.Nf3 Nf6 9.Bd3 Be7 10.Ne5 Rb8 11.Bc3 Nb7 12.0-0 Nc5) 8.Nf3 Ne4 9.Bd3 Rb8 10.Be5 Rb4 11.0-0 f6 12.Bc3 Nc3; E) 7.Nc3 Nf6 (7...Rb8 8.Rb1 Nf6 9.Nf3 e6 10.Bd3 Bd6 11.0-0 0-0 12.e4 Qc7; 7...Qc7 8.Rb1 Nf6 9.Nf3 e6 10.Bd3 Rb8 11.Ne2 Bd6 12.Bf6 gf6; 7...e6 8.Nf3 Nf6 9.Rb1 Bd6 10.Ba6 0-0 11.0-0 Rb8 12.Qe2 e5; 7...h6 8.Nf3 Qc7 9.Na2 Bf5 10.Be5 Qd7 11.Nb4 e6 12.Na6 Rc8) 8.Rb1 e5 9.Nf3 Bd6 10.d4 e4 11.Ne5 0-0 12.Be2 Rb8.

6.bc6 Bc6 A) 7.Nc3 Nf6 (7...e6 8.Nf3 Nf6 9.Ne5 d4 10.Nb5 de3 11.de3 Bd5 12.f3 Bb4; 7...Nc4 8.Bc4 dc4 9.Nf3 Nf6 10.0-0 Qb6 11.Rb1 Rd8 12.Ne5 Qc7) 8.Nf3 e6 9.Ne5 d4 10.Nb5 de3 11.de3 Bb4 12.c3 Bc5; B) 7.Bd4 f6 (7...Nh6 8.Nc3 f6 9.f4 Nf5 10.Nf3 e6 11.Bd3 Bd6 12.0-0 0-0; 7...Nf6 8.Nf3 e6 9.Nc3 Bd6 10.Nb5 0-0 11.Nd6 Qd6 12.Bf6 gf6) 8.f4 Nh6 9.Bd3 Nc4 10.Nf3 e6 11.0-0 Bd6 12.Qe2 0-0; C) 7.Na3 Nf6 (7...e6 8.Nf3 Nf6 9.Bd3 Bb4 10.0-0 0-0 11.Ne5 Ba4 12.Nb1 Be8; 7...a6 8.Nf3 Nf6 9.Bd3 Ba4 10.0-0 e6 11.Nb1 Bc6 12.Bd4 Bd6; 7...h6 8.Nf3 a6 9.Bd3 Nf6 10.0-0 Ba4 11.Ne5 Nc6 12.Qf3 Qd6; 7...h5 8.Nf3 Nf6 9.Ne5 a6 10.Be2 e6 11.0-0 Ba4 12.Nb1 Bd7) 8.Nf3 e6 9.Bd3 Bb4 10.0-0 0-0 11.Ne5 Ba4 12.Nb1 Be8; D) 7.Nf3 Nf6 (7...e6 8.Bd4 Nf6 9.Nc3 Bd6 10.Nb5 0-0 11.Nd6 Qd6 12.Bf6 gf6; 7...Nh6 8.Nc3 e6 9.Nb5 a6 10.Nbd4 Ng4 11.h3 Nf6 12.Bd3 Bd6; 7...a6 8.Bd4 Nh6 9.Nc3 Nf5 10.Bd3 Nd4 11.Nd4 e5 12.Nc6 Nc6; 7...Rc8 8.Nc3 Nf6 9.Nb5 a6 10.Na7 Ra8 11.Nc6 Nc6 12.Bd3 e6) 8.Bd4 g6 9.Nc3 Bg7 10.Bd3 0-0 11.0-0 Nc4 12.Bc4 dc4.

6.bc6 Nc6 A) 7.Nf3 Nf6 (7...Qb6 8.Be5 Nf6 9.Nc3 e6 10.Rb1 Bb4 11.Na2 Ne5 12.Ne5 Bd2; 7...e6 8.Nc3 Nf6 9.Bd3 Bc5 10.0-0 0-0 11.h3 h6 12.Qe2 Qa5) 8.c4 dc4 9.Bc4 Rc8 10.Na3 e6 11.0-0 Be7 12.Nb5 0-0; B) 7.Na3 Qb6 (7...Nf6 8.Nf3 e6 9.Bd3 a6 10.0-0 Nb4 11.Qb1 Ba4 12.Be2 b5; 7...Rc8 8.Nf3 Nf6 9.Nb5 a6 10.Nbd4 Ne4 11.Bd3 Qb6 12.Nc6 Qb2; 7...e6 8.Bd3 Nf6 9.Nf3 Bc5 10.0-0 0-0 11.Nb5 a6 12.Nbd4 Ne4; 7...h5 8.Nf3 Nf6 9.c4 Bf5 10.Qb3 Na5 11.Qb4 Rb8 12.cd5 Nd5) 8.Rb1 Qd8 9.Nf3 Nf6 10.Be2 a6 11.0-0 Qa5 12.c4 Nd8; C) 7.Nc3 Nf6 (7...Qb6 8.Rb1 e6 9.Ba3 Qc7 10.Nb5 Qb8 11.Bf8 Kf8 12.Nf3 Nf6; 7...e6 8.Bd3 Nf6 9.Nf3 Bc5 10.Ba3 Nb4 11.Ne5 Qc7 12.f4 0-0; 7...h5 8.Nf3 Nf6 9.Be2 e6 10.0-0 Bc5 11.Ba3 Ba3 12.Ra3 0-0) 8.Nf3 e5 9.d4 ed4 10.Nd4 Bc5 11.Nb3 Bb4 12.Bd3 0-0.

6.Nf3 e6 A) 7.Ne5 Nf6 (7...Ne7 8.Bd3 Nf5 9.Na3 Qc7 10.Bc3 Rd8 11.Qe2 Bc8 12.f4 Bc5; 7...h5 8.Na3 Nf6 9.Bd3 Bd6 10.Qf3 Qc7 11.Nd7 Qd7 12.Bf6 gf6) 8.Na3 Qc7 9.Bd3 Bd6 10.Ng4 e5 11.Nf6 gf6 12.Qh5 Bb4; B) 7.Na3 Nf6 (7...f5 8.Be2 Nf6 9.0-0 Be7 10.Ne5 0-0 11.Bc3 Be8 12.d3 Nd7; 7...h5 8.Bd3 Nf6 9.0-0 Bd6 10.g3 Qc7 11.Qe2 e5 12.e4 de4; 7...c5 8.Ne5 Nf6 9.c4 Bd6 10.Bd3 0-0 11.Nd7 Nd7 12.cd5 Ne5) 8.Bd3 Qc7 9.0-0 Bd6 10.h3 0-0 11.Bf6 gf6 12.Nd4 f5; C) 7.Bd3 Nf6 (7...cb5 8.ab5 Nf6 9.Nc3 Qc7 10.0-0 Bd6 11.Ba3 Ba3 12.Ra3 0-0; 7...h5 8.0-0 Nf6 9.Be5 h4 10.h3 Nc4 11.Bc4 dc4 12.Nc3 Bb4; 7...a6 8.ba6 Nf6 9.Be5 ba6 10.Nc3 Bc5 11.0-0 0-0 12.h3 Qe7; 7...f5 8.Nc3 Nf6 9.Ne5 Bd6 10.f4 0-0 11.0-0 c5 12.h3 Qc7; 7...Qb6 8.Na3 Nf6 9.0-0 Bd6 10.Ne5 0-0 11.f4 g6 12.Qe1 Qd8; 7...Nh6 8.0-0 Nf5 9.Nc3 Qb6 10.Rb1 Nc4 11.Bc4 dc4 12.e4 Nd6; 7...Nc4 8.Bc4 dc4 9.Nc3 Nf6 10.Qe2 cb5 11.ab5 Bd6 12.Qc4 0-0; 7...Rc8 8.Ne5 Nf6 9.0-0 Bd6 10.f4 c5 11.Nc3 c4 12.Be2 Qc7; 7...c5 8.0-0 c4 9.Be2 Nf6 10.Be5 Bb4 11.h3 0-0 12.Qc1 Qe7) 8.0-0 Nc4 9.Bc4 dc4 10.Nc3 Bd6 11.Qe2 0-0 12.Qc4 e5.

6.Nf3 Nf6 A) 7.Bd3 Nc4 (7...cb5 8.ab5 Nc4 9.Bc4 dc4 10.Nc3 Qb6 11.0-0 e6 12.Qe2 Bb5; 7...e6 8.0-0 Nc4 9.Bc4 dc4 10.Nc3 cb5 11.ab5 Qb6 12.Qe2 Bb5; 7...Qc8 8.Na3 cb5 9.ab5 g6 10.0-0 Bg7 11.Bc3 Nc4 12.Bc4 dc4; 7...Qb6 8.Ne5 g6 9.Nc3 Be6 10.bc6 Nc6 11.Nb5 Bg7 12.a5 Na5; 7...g6 8.Nc3 Bg7 9.bc6 bc6 10.0-0 0-0 11.Rb1 Nc4 12.Bc4 dc4; 7...c5 8.Nc3 e6 9.Ne5 Bd6 10.f4 Qc7 11.Nd7 Qd7 12.Qf3 c4; 7...a6 8.Na3 g6 9.ba6 ba6 10.Rb1 Bg7 11.0-0 0-0 12.Ne5 Rb8; 7...Rc8 8.Ne5 Nc4 9.Bc4 dc4 10.Na3 cb5 11.ab5 Be6 12.0-0 Qd5; 7...h6 8.Ne5 Qc7 9.Na3 e6 10.0-0 Bd6 11.f4 Rd8 12.Qf3 0-0) 8.Bc4 dc4 9.Na3 cb5 10.ab5 e6 11.0-0 Ba3 12.Ba3 Bb5; B) 7.Nc3 e6 (7...Qc7 8.Bd3 e6 9.0-0 c5 10.Qe1 c4 11.Be2 Bd6 12.Qc1 0-0; 7...g6 8.Be2 Bg7 9.bc6 bc6 10.Ne5 Be6 11.0-0 Rb8 12.Rb1 0-0; 7...c5 8.Ne5 Qc7 9.Nd7 Qd7 10.Qf3 e6 11.Bd3 c4 12.Be2 Bd6) 8.Bd3 Bd6 9.bc6 Bc6 10.Nb5 Nc4 11.Bc4 dc4 12.Qe2 Be7; C) 7.Be5 g6 (7...Ne4 8.d3 Nc5 9.Nc3 f6 10.Bg3 Kf7 11.Be2 e5 12.0-0 Ne6; 7...e6 8.Bd3 Nc4 9.Bc4 dc4 10.Qe2 cb5 11.ab5 Bb5 12.Nc3 a6) 8.Nc3 Bg7 9.Bd3 0-0 10.0-0 Nc4 11.Bc4 dc4 12.Qe2 Rc8; D) 7.Na3 g6 (7...Bf5 8.Nh4 Bg6 9.bc6 Nc6 10.Nb5 a6 11.Nd4 Rc8 12.Ng6 hg6; 7...Ne4 8.Ne5 e6 9.Bd3 Qh4 10.Be4 Qe4 11.0-0 Bd6 12.Qh5 Be5; 7...e6 8.Ne5 Bd6 9.Bd3 c5 10.c4 0-0 11.Nd7 Nd7 12.cd5 Ne5; 7...c5 8.Ne5 g6 9.Bc3 b6 10.Bd3 Bg7 11.0-0 c4 12.Nd7 Qd7) 8.bc6 bc6 9.Bd3 Bg7 10.0-0 0-0 11.Rb1 Rb8 12.Be5 Rb6; E) 7.Ne5 Bf5 (7...Qc7 8.Bd3 g6 9.Nd7 Qd7 10.Bc3 Nc4 11.Na3 Nd6 12.0-0 Bg7; 7...e6 8.Bd3 cb5 9.ab5 Bd6 10.0-0 Qc7 11.f4 Nc4 12.Bc4 dc4; 7...g6 8.Nc3 Qc7 9.f4 Bg7 10.Bd3 0-0 11.0-0 Be6 12.bc6 bc6; 7...c5 8.Nc3 Qc7 9.Nd7 Qd7 10.Qf3 e6 11.Bd3 c4 12.Be2 Bd6; 7...cb5 8.Nd7 Qd7 9.Bb5 Nc6 10.0-0 a6 11.Bd3 e6 12.Qf3 Bd6) 8.g4 Bg6 9.Bg2 e6 10.Nc3 Bd6 11.f4 Nd7 12.Ng6 hg6.

6.c4 Nc4-/+ 7.Bc4 dc4 8.a4 Ne4 (8...Bf5 9.a5-/+) 9.Qc2 Bf5 (9...Nd6 10.e4=+) 10.Qc4= Nd6 11.Qd4 (11.Qe2 a6 12.0-0 ab5 13.ab5 Ra1 14.Ba1 f6=) 11...f6=+ 12.h4 (12.0-0 e5 13.Qd5 Qd7=+) 12...e5 13.Qd5 Be4 (13...a6 14.Nc3-/+) 14.Qe6 Be7 15.Nc3 Bf3 (15...Bf5!? 16.Qd5 Qd7-/+) 16.gf3= Nf7 (16...Qd7!? 17.Qd7 Kd7=+) 17.Rg1+= Kf8 18.Nd5 Nd6?? (18...Bd6 19.Ba3+=) 19.Rc1 (19.Ba3 a6 20.Rc1 ab5 21.Rc7 Qc7 22.Nc7 b4 23.Bb4 g6+-) 19...Rc8?? (19...Ne8!?+/-) 20.e4 (better 20.Ba3 c5 21.bc6 bc6 22.Ne7+-) 20...c6 21.bc6 bc6 22.Ne7 Qe7 23.Qb3?? (better 23.Qe7 Ke7 24.Rg7 Ke6 25.d4+-) 23...c5+= 24.Ba3 c4? (better 24...Nb7+=) 25.Qb4+- Rc6? (better 25...Rd8 26.Rc4 Kf7+-) 26.Ke2 (better 26.Qb8 Rc8 27.Qd6 Qd6 28.Bd6 Kf7+-) 26...c3?? (better 26...Rg8=) 27.Qb8+- Rc8 28.Bd6 (better 28.Qd6 Qd6 29.Bd6 Kf7 30.Rc3 Rc3 31.dc3 Rc8+-) 28...Rb8 29.Be7 Ke7 30.dc3?? (better 30.Rg7 Kd6 31.Rc3+-) 30...Rb2+= 31.Ke3 Ra2?? (better 31...g6+=) 32.Rg7+- Ke6 33.Ra7 Rd8 34.Rb1 (34.Rh7?? Rad2 35.Re7 Ke7 36.f4 R8d3) 34...Ra3 35.Rb6 Rd6 36.Rd6 Kd6 37.Kd3 (37.Rh7?! Rc3 38.Ke2 Rc2 39.Kf1 Rc8+-) 37...Kc5 (37...Ra2 38.f4 ef4 39.f3+-) 38.Rh7 Ra2 (38...Ra4 39.Rf7 Ra1 40.Rf6 Rd1 41.Ke3 Re1 42.Kd2+-) 39.Rc7 (39.Rf7 Ra4 40.Rf6 Ra1+-) 39...Kb6 (39...Kd6 40.Rc8 Kd7+-) 40.Rf7 Ra4 (40...Rf2 41.Rf6 Ka5 42.Kc4+-) 41.Rf6 Kc5 42.Re6 Kb5 (42...Ra2 43.Re5 Kd6 44.Rd5 Ke7 45.Ke3+-) 43.Re5 Kc6 44.h5 Ra2 45.h6 (45.f4 Rf2 46.f5 Kd7+-) 45...Rf2 46.h7 (46.Rf5 Rh2 47.Rf6 Kc5+-) 46...Rf3 47.Kd4 Rh3 48.Re8 (better 48.Re6 Kc7 49.Re7 Kd6 50.Ra7+-) 48...Rh7 49.Rc8 Kd6 50.e5 Ke6 (50...Kd7 51.Rg8+-) 51.Rc6 Kf5 (51...Kd7 52.Kd5+-) 52.Kd5 Rd7 (52...Rh1 53.Rf6 Kg4 54.e6+-) 53.Rd6 Re7 54.e6 Kf6 (54...Ra7 55.c4 Kf6 56.Rd7+-) 55.c4 (55.Rd8 Rb7 56.Rf8 Kg7 57.Rf7 Rf7 58.ef7 Kf7+-) 55...Kf5 (55...Rg7 56.Rd7 Rg2+-) 56.c5 Rc7 57.c6 Kf6 58.Rd7 Rc6 (58...Rc8 59.e7 Re8 60.c7+-) 59.e7 (59.Rf7 Kg6 60.Kc6 Kh5 61.e7 Kg5 62.e8Q Kh4 63.Rg7 Kh3 64.Qh5) 59...Re6 60.e8Q (60.Rd6 Rd6 61.Kd6 Kf7 62.Kd7 Kf6 63.e8Q Kg5 64.Qe3 Kf5 65.Kd6 Kg4 66.Ke5 Kh5 67.Qg3 Kh6 68.Kf6 Kh5 69.Qg5) 60...Re8= 61.Rd6 Kf7 62.Rd7 Kg6 63.Rd6 Kg5 64.Kc6 Rc8 65.Kd7 Rh8 66.Rd5 Kg6 67.Rd6 Kg7 68.Kc6 Rc8 69.Kd5 Kf7 70.Ke5 Re8 71.Kd5 Ke7 72.Rc6 Rd8 73.Kc5 Kd7 74.Rf6 Rc8 75.Kd5 Ke7 76.Re6 Kf7 77.Kd6 Rd8 78.Ke5 Ra8 79.Kf5 Ra5 80.Re5 Ra6 81.Re4 Rf6 82.Ke5 Re6 83.Kd4 Kf6 84.Rf4 Ke7 85.Re4 Kd6 86.Rf4 Kd7 87.Rf7 Re7 88.Rf4 Re6 89.Kd3 Rd6 90.Ke3 Ke6 91.Re4 Kf5 92.Rf4 Ke5 93.Re4 Kf5 94.Rf4 Kg5 95.Rf3 Re6 96.Kf2 Kg4 97.Rg3 Kf4 98.Rf3 Kg4 99.Kg2 Re2 100.Rf2 Re3 101.Kf1 Kg3 102.Rg2 Kf3 103.Rf2 Kg3 104.Rg2 Kh3 105.Rf2 Kg3 106.Rg2 Kh3 107.Kf2 Rc3 108.Kf1?? (better 108.Rg8=) 108...Rc1-+ 109.Kf2 Rc2 110.Kg1 Rg2 111.Kf1 Kg3 112.Ke1 Kf3 113.Kf1 (113.Kd1 Ke3 114.Kc1 Kd3 115.Kb1 Kc3 116.Ka1 Kb3 117.Kb1 Rg1) 113...Rf2 (113...Rg4 114.Ke1 Rd4 115.Kf1 Rd1) 114.Ke1 Re2 115.Kd1 Kf2 (115...Ke3 116.Kc1 Kd3 117.Kd1 Re4 118.Kc1 Rb4 119.Kd1 Rb1) 116.Kc1 Ke1 117.Kb1 Kd1 118.Ka1 Rc2 (118...Kc2 119.Ka2 Re3 120.Ka1 Ra3) 119.Kb1 Rd2 120.Ka1 Kc2 121.Ka2 Kc3 (121...Rd3 122.Ka1 Ra3) 122.Ka3 (122.Kb1 Rd1 123.Ka2 Rc1 124.Ka3 Ra1) 122...Kc4 123.Ka4 Rb2 (123...Ra2) 124.Ka5 Rb5 (124...Rb4 125.Ka6 Kc5 126.Ka5 Rd4 127.Ka6 Rd7 128.Ka5 Ra7) 125.Ka4 (125.Ka6 Kc5 126.Ka7 Kc6 127.Ka6 Rd5 128.Ka7 Rd8 129.Ka6 Ra8) 125...Kc3 (125...Re5 126.Ka3 Re2 127.Ka4 Ra2) 126.Ka3?? (better 126.Kb5 Kd4=) 126...Rb3 (126...Ra5) 127.Ka4 Kc4 (127...Rb4 128.Ka5 Kc4 129.Ka6 Kc5 130.Ka5 Rd4 131.Ka6 Rd7 132.Ka5 Ra7) 128.Ka5 Rb4 129.Ka6 Kc5 130.Ka5 Rb5 (130...Rd4 131.Ka6 Rd7 132.Ka5 Ra7) 131.Ka6 (131.Ka4 Kc4 132.Ka3 Kc3 133.Ka2 Ra5 134.Kb1 Ra6 135.Kc1 Ra1) 131...Kc4 (131...Kc6 132.Ka7 Ra5 133.Kb8 Ra6 134.Kc8 Ra8) 132.Ka7 Kc5 133.Ka6 Kc6 134.Ka7 Rb6 (134...Ra5 135.Kb8 Ra6 136.Kc8 Ra8) 135.Ka8 Kc7 136.Ka7 Kc8 (136...Rc6 137.Ka8 Ra6) 137.Ka8?? (137.Kb6 Kd8=) 137...Kc7 (137...Ra6) 138.Ka7 Kc6 (138...Rc6 139.Ka8 Ra6) 139.Ka8= Rb7 (139...Ra6 140.Kb8 Ra5 141.Kc8 Ra8) ½-½. Kameshkovsky (1615) - javad33, Rated Classical game, lichess.org, 2013.

6.Bd4 Bg4 (6...e6 7.Nc3 c5 8.Be5 Ne4 9.Ne4 de4=) 7.h3 Bh5 8.Nc3 e6 9.g4 Bg6 =.

6.Be2 Nc4 7.Bf6 ef6 8.Nc3 Be6 9.Bc4 dc4 =.

6.Be2 e6 7.0-0 c6 8.a4 Qb6 9.Ne5 Bd6 10.Nd7 Kd7 11.d3 (11.Na3 Kc8+=) 11...Rhc8 (11...cb5 12.ab5 Qb5 13.Bc3=) 12.c4+= Ke8 13.Bd4 Qc7 14.g3 Kf8 15.Bf6 gf6 16.Nd2 d4 (16...dc4!? 17.dc4 Rd8+=) 17.ed4+- e5 (17...Rd8 18.Nf3+-) 18.Bg4 Re8 (18...Rd8 19.Bf5+-) 19.Ne4 ed4 (better 19...Be7+-) 20.Nf6 (20.Nd6?! Qd6 21.Bf5 Re5+-) 20...Re5 21.Nd7 Kg7 22.Ne5 Be5 23.Bf5 cb5 (23...h6 24.f4 Bf6 25.Qg4 Kf8 26.Bh7+-) 24.Qg4 Kf8 25.Bh7 (worse 25.cb5 h6+-) 25...bc4 (25...Bg7 26.ab5 Nb3+-) 26.Qg8 Ke7 27.Qa8 cd3 28.Qa7 d2 29.Rab1 Nc4 (29...b6 30.Qb6 Qb6 31.Rb6 d3+-) 30.Rb7 Qb7 1–0. onur604 (2320) – otmani_mohamed_fouad (2150), lichess.org, 2020.

6.Be2 e6 7.0-0 Bd6 8.a4 Ng4 (8...0-0 9.Ne5=) 9.h3 (better is 9.Bg7!? Rg8 10.Bc3+/-) 9...Nf6= 10.Na3 0-0 11.c4 a6 12.cd5 ab5 (12...ed5!? 13.Qc2 Re8=) 13.de6+/- Be6 14.Nb5 (worse is 14.Bb5 c6 15.Bd3 Nb3=; worse is 14.ab5 Nb3-/+) 14...Nc6 15.Nbd4 (15.Nd6 cd6 16.Qb1+/-) 15...Ne4? (better is 15...Bd5+=) 16.Nc6+- bc6 17.Qc2 Nc5 18.Qc3 f6 19.d4 (19.a5 Qe7 20.Bc4 Bc4 21.Qc4 Qf7 22.Qf7 Kf7+-) 19...Ne4?? (better is 19...Na4 20.Qc2 Nb2 21.Qb2 c5+=) 20.Qc6+- Qd7?? (20...f5 21.a5+-) 21.Qc2 (better is 21.Qe4 Bf5 22.Qd5 Be6+-) 21...Bf5? (21...Bd5+-) 22.Bd3 Rfe8 23.Nh4 Bh3 24.Be4 Qg4 25.Bh7 Kf8 26.Bf5 Qh4 27.Bh3 Ke7 28.Ba3 Ba3 29.Ra3 Rh8 30.Qc7 Kf8 31.Qd6 Kg8 32.Qe6 Kf8 33.Qd6 Ke8?? 34.Qc6 Kf7 35.Qd5 Kg6 36.Qf5 Kf7 37.d5 g5 38.d6 g4 39.Qg4 Rag8 40.Qh4 (40.Qh4 Rh4 41.Kh2+-) 1–0. Fournier,Frederic – vonpatagonia, Active (5/0), 2004.

6.Be5 Bg4 (6...e6 7.Nc3 Ne4 8.Rb1 f6 9.Ne4 de4=; 6...Nc4 7.Bc4 dc4 8.a4 a6 9.Nc3 Bg4+=; 6...c6 7.Nc3 Nc4 8.Bc4 dc4 9.Nd4 Ng4=; 6...Bf5 7.Bd3 Bd3 8.cd3 a6 9.Nc3 Nd7=) 7.h3 Bh5 8.d4 Ne4 9.Be2 Nc4 =.

6.Ne5 Bf5 7.g4 Bg6 8.d3 e6 9.Qd2 c5 +=.

6.Bf6 ef6 7.Nc3 Be6 8.Bd3 Bc5 9.0-0 f5 =.

5.a4 c6 6.d3 (6.Be5!? Ne7 7.Nf3+-) 6...Qe7 (6...Bd6 7.Nf3 Bg4 8.h3 Bf3 9.Qf3=) 7.c4 (7.Qd2!? Qc7 8.Bc3=) 7...d4 (better 7...dc4 8.Nf3 e4 9.de4 Nf6=) 8.e4?? (8.Nd2 Bf5=) 8...c5?? (better 8...Qb4 9.Qd2 Nb3 10.Qb4 Bb4 11.Ke2 Na1 12.Ba1 cb5 13.ab5 a6–+) 9.Nf3 (9.Bc1 Nf6=) 9...b6 (9...Nf6 10.Bc1=) 10.Nbd2 (10.Be2 Qe6=) 10...a6 11.Be2 ab5 (11...Nf6 12.0-0=) 12.ab5+= Nf6 13.0-0 Bb7 (13...Qc7 14.Nb3+=) 14.Nb3+- g6 (14...Nd7 15.Na5 ba5 16.Bc1+=) 15.Na5 Ra5 (15...ba5 16.Bc1+-) 16.Ra5+- ba5 17.Qd2 Qc7 (17...Nh5 18.Ra1+-) 18.Ra1+- Nd7 19.Ra5 Nb6 20.Ra2 (20.Bc1 Bg7+-) 20...h5 (20...Bg7 21.Bc1+-) 21.h4 (21.Qg5 Nd7+-) 21...Bh6+- 22.Ng5?? (better 22.Qe1+-) 22...f6-/+ 23.Ne6 (23.f4!?-/+) 23...Qe7–+ (23...Bd2 24.Nc7 Kd7 25.Na6 Ba6 26.ba6+-) 24.f4? (better 24.Qa5 Qe6 25.Qa7–+) 24...f5?? (better 24...Qe6 25.Ra7 Bf4–+) 25.Ng5 (better 25.ef5!? gf5 26.Ng5 Bg5 27.fg5+-) 25...Bg5 (25...fe4 26.de4 (26.Ne4? Be4 27.de4 Qh4–+) 26...0-0 27.fe5 Qe5 28.Bd3=) 26.fg5 fe4 27.de4 Be4 28.Qa5 (better 28.Ra6 Qb7 29.Bd3 Bd3 30.Qd3+=) 28...0-0?? (better 28...Qc7=+) 29.Qb6+- Qf7 30.Qf6! Qf6 (30...Qe8 31.Qd6 Qf7 32.Bf3+-) 31.gf6 Rf6 32.Ra8 (32.Ba3 d3 33.Bd1 Kf7+-) 32...Kf7?? (better 32...Ba8 33.Ba3 Rf4–+) 33.Ra7+- Ke6 34.Ra3 (34.Ba3!? d3 35.Ra6 Kf7 36.Rf6 Kf6+-) 34...Kf5 (34...Kd7 35.g4 Kc7 36.gh5 gh5 37.Ra7 (37.Bh5?! Rh6 38.Bf3 Rh4+-) 37...Bb7 38.Bc1+- (38.Bh5?! Kb6 39.Ra3 Rh6+-)) 35.Bf3 Bf3?? (35...Rd6+-) 36.Rf3 Kg4 37.Rf6 Kh4 38.Rg6 d3 (38...e4 39.Kh2 e3 40.g3) 39.Bc3 (39.Be5 d2 40.Bf6) 39...d2 40.Bd2 e4 41.Rc6 (41.Be1) 41...e3 (41...Kg3 42.Be3 Kh4 43.b6 Kg4 44.b7 h4 45.Rc5 h3 46.Rg5 Kh4 47.g3) 42.Be3 (42.Rg6 ed2 43.Kh2 d1Q 44.g3) 42...Kg3 (42...Kg4 43.Rc5 Kg3 44.b6 Kh4 45.b7 Kg4 46.b8Q h4 47.Qf4) 43.Rc5 (43.Rg6 Kh4 44.Bf2) 43...h4 (43...Kg4 44.Kh2 Kh4 45.Rd5 Kg4 46.Rg5 Kh4 47.g3) 44.Rg5 1–0. afsharian (1630) – Rasputin8356, lichess.org, 2019.

5.Be5+/- Nc4 6.Bc4 dc4 7.a4 Bd6?? (better is 7...Nf6+/-) 8.Bg7+- Qg5 9.g3 (better is 9.Bh8 Qg2 10.Qf3+-) 9...Qg7–+ 10.Nc3 Be5 11.Ra3 Bc3 (better is 11...Bg4!? 12.f3 Be6–+) 12.Rc3-/+ Be6 13.Nf3 Bd5 14.Rg1 (14.e4 Be4 15.Rc4 f5–+) 14...0-0-0 15.Qa1?? (15.Nd4 Nf6–+) 15...Ne7 (15...Bf3 16.a5–+) 16.Ra3?? (better is 16.Nd4–+) 16...Qa1 17.Ra1 Bf3 0–1. Valpa – Djpnola, playchess.de, 2005.

5.Be5+/- Nc4 6.Bc4 dc4 7.Nc3 f6 8.Bd4 Be6 9.Nf3 (9.Qh5 Kd7+/-) 9...Qd7 10.Nh4 (10.Rb1 Bd6+/-) 10...g5 (10...Bg4 11.Qb1+/-) 11.Nf3+/- Bd6? (better 11...Bg7!?+/-) 12.Ng5!+- Bf5 (12...fg5 13.Qh5 Double attack (13.Bh8 Pinning; 13.Bh8 Deflection; 13.Qh5 Decoy)) 13.Qh5 (13.Nge4 Be4 14.Ne4 Qf5 15.Nd6 cd6+-) 13...Bg6 14.Qf3 Be7? (better 14...0-0-0 15.Nge4 Bb4+-) 15.Qb7 Qc8 (15...Rc8 16.Nge4 c5 17.bc6 Qc6 18.Qc6 Rc6 19.Ba7 Nh6+-) 16.Qc6 Kf8 17.Ne6 Kf7 18.Nc7 Bb4 (18...Nh6 19.N3d5 Be4 20.Qc4 Bd5 21.Qd5 Kg6 22.Qa8 Qa8 23.Na8 Ra8 24.e4+-) 19.Qd5 (19.N3d5!? Ba5 20.Na8 Qc6 21.bc6 Ne7 22.Bf6 Ra8 23.Be7 Be4+-) 19...Kg7 20.Ne6 (better 20.Qa8 Qc7 21.Nd5 Qa5 22.Nb4 Qb4 23.Qa7 Qe7+-) 20...Kf7 21.Nc7 Kg7 22.Na8 Bc3 (22...Ne7 23.Qf3 Rf8 24.b6+-) 23.Bc3 (23.dc3 Nh6 24.Qd6 Rf8+-) 23...Bc2 24.b6 Ne7 (24...ab6 25.Nb6 Qg4 26.h3+-) 25.Qf3 (better 25.Qg5! Ng6 26.Qf6 Kh6 27.Qg7 Kh5+-) 25...Rf8 (25...Qc6 26.Qc6 Nc6 27.Nc7 ab6 28.Nd5+-) 26.b7 Qc6 27.Qg4 (27.d3!? Qf3 28.gf3 Bd3+-) 27...Ng6 28.Qg3 (28.Qg3 Qb7 29.Nc7+-) 1-0. alex296 - The_Kets, Rated Classical game, lichess.org, 2013.

5.Be5+/- Bd6?? 6.Bg7+- f6 (6...Bg4 7.Qg4 (7.Bh8?! Bd1 8.Kd1 Nf6=) 7...h5 8.Qa4+-) 7.Be2 (better is 7.Qh5!? Ke7 8.Bh8 h6+-) 7...Be6 (7...Kf7 8.Bh8 Nh6 9.Bf3+-) 8.a4 (8.Bh8 Nh6 9.Bd3 Qe7 10.Qh5 Kd7 11.Qh6 Rh8+-) 8...Be5 (8...Kd7 9.Bh8 Nh6+-) 9.d4 Qe7 10.Bh8 (10.de5?! Qg7 11.Bh5 Kd8+-) 10...Bd6 11.Bh5 Bf7 12.Bf7 Qf7 13.Ne2 0-0-0 14.Nd2 Nh6 15.Bf6! Qf6 16.Nf3 Rg8 17.Ng3 Bb4 18.Nd2 Rf8? 19.0-0 Qh4 20.Nf3 Ng4 21.Nh4 h5 22.Nh5 b6 23.Qg4 (23.Qg4 Kb8 24.Nf4+-) 1–0. jboger (2210) – femmany, net–chess.com, 2013.

5.Be5+/- Bf5 6.Nf3 f6 (6...Nf6 7.Nd4 Be4 8.d3+-) 7.Bb2 (7.Bc3 c5+-) 7...Bd6 (7...Qd7 8.Nd4 Bg6 9.Be2+-) 8.Nd4 Be4 (8...Bg6 9.Bc3 Nc4 10.Bc4 dc4 11.Qe2+-) 9.Qg4 (9.Nc3 Qd7+-) 9...Qe7+- 10.Nc3 f5 (10...Nh6!? 11.Qh4 c5 12.bc6 Nc6+-) 11.Nf5+- Bf5 12.Qf5 g6?? (12...c6+-) 13.Nd5 Qd7 (13...gf5 14.Ne7 Ke7 15.Bh8 Nf6 16.Bf6 Kf6+-) 14.Qd7 (14.Qe4 Kf8 15.Bh8 c6 16.bc6 bc6+-) 14...Kd7 15.Bh8 c6 (15...Ne7 16.Ne7 Rh8 17.Nd5+-) 16.bc6 bc6 17.Nf6 Nf6 18.Bf6 Rf8 (18...Rb8 19.f4+-) 19.Bc3 Nc4 (19...Nb7 20.Rb1 Nc5 21.Bd4+-) 20.Bc4 Re8 21.Rb1 Bc5 22.Rb7 Kc8 23.Rh7 Re7 24.Rh8 (24.Rh6 Kd7+-) 24...Kd7 25.0-0 (25.Rg8!? Re4 26.d4 Bb6+-) 25...Re8 26.Rh6 g5 27.Rb1 Bf8 28.Rb7 Kc8 29.Rhh7 Kd8 30.Rb8 1–0. DEFFM – Aytek, freechess.org, 2018.

5.Be5+/- f6 6.Bb2 Nc4 7.Bc4 dc4 8.d3 (8.Nc3 Bf5+/-) 8...cd3 9.Qd3 Qd3 10.cd3 Bb4 11.Bc3 Bc3 (11...Bd6 12.Nd2+/-) 12.Nc3 Ne7 13.Nf3 Bg4 14.Nd4 0-0-0 15.0-0 (15.Rc1 Rhe8+/-) 15...Nd5 16.Rac1 Nc3 (16...Nb4 17.f3 Bh5 18.Ne6 Nd3 19.Rcd1+/-) 17.Rc3+- Rhe8 18.Rfc1 Rd7 19.a4 Ree7 20.a5 Kb8 (20...Rd6 21.a6!+-) 21.b6! ab6 (21...ab6 22.ab6 Combination; 21...cb6 22.Rc8 mate Mate attack) 22.ab6 cb6?? (better is 22...Bh5+-) 23.Rc8 (23.Rc8 Ka7 24.Ra1) 1–0. Valpa – Rug_Weaver, playchess.de, 2002.

5.Be5+/- Nf6 6.Nf3 Bd6 7.Nc3 Be6 8.Bd3 Be5 9.Ne5 0-0 10.0-0 Qd6 11.f4 b6 12.Qe1 d4 13.ed4 Qd4 14.Qf2 (14.Qf2 Qd6 15.Rae1+/-) 1–0. marekt – wrigglyroo, ChessWorld.net, 2012.

5.Be5+/- Nf6 6.Nf3 Bd6 7.Bd6 Qd6 8.Be2 0-0 9.0-0 Re8 10.d4 Ne4 11.Nfd2 Bf5 12.Ne4 Be4 13.Nd2 Bg6 14.c4 dc4 15.Nc4 Nc4 16.Bc4 c6 17.a4 Rad8 18.Rc1 c5 (18...Rc8!?+-) 19.dc5+- Qe5 20.Qf3 h5? (20...Rd7 21.c6 bc6 22.bc6+-) 21.Qg3 (better 21.Qb7 Re7 22.Qf3 Rd2+-) 21...h4?? (21...Qg3 22.hg3 Kf8+-) 22.Qg6 (22.Qg6 Qe7 23.Rfd1+-) 1–0. BeepBeepImAJeep (2620) – Tayka (2570), lichess.org, 2017.

5.Be5+/- Nf6 6.Nf3 Bg4 7.Nc3 Be7 8.h3 Bh5 9.g4 Bg6 10.g5 Ne4 11.Bg7 Rg8 12.Bd4 Bh5 13.h4 c5 14.bc6 bc6 (14...Nc6!? 15.Bb5 f6+/-) 15.d3 Nc3 16.Bc3 Nb7 17.Be2 Nd6 18.Ne5 Be2 19.Qe2 (19.Ke2?! Nb5 20.Bb2 Ba3+/-) 19...Nb5 20.Qh5 Rf8 21.Bd2 (21.Nc6 Qc7 22.Bg7 Qc6 23.Bf8 Qc3 24.Ke2 Qc2 25.Kf3 Bf8 26.Qh7 Nc3+-) 21...Qd6 (21...Qc7 22.f4+-) 22.f4 c5 (22...h6 23.Qh6 Qh6 24.gh6+-) 23.Qh7 c4 24.dc4 dc4 (24...Na3 25.Qd3 dc4 26.Qe4+-) 25.Qe4 Rd8 26.Nc4 Na3 (26...Qd5 27.Qd5 Rd5+-) 27.Nd6 (27...Rd6 28.Qa8 Kd7 29.Qa7 Ke8 30.Qa3+-) 1–0. MT – PauloBarbosa, ICC, 2004.

5.Be5+/- Nf6 6.h3 Nc4 (6...Bd6 7.Bd6 Qd6 8.Nf3+=) 7.Bc4+/- dc4 8.Nf3 Be7 9.Nc3 1–0. wlittle (2155) – kingtipper (2020), net–chess.com, 2004.

5.Be5+/- Qg5 6.Bc7+- Nc4 7.Bc4 (better is 7.Nc3!?+-) 7...Qg2 8.Qf3 Qf3 9.Nf3 dc4 10.Rg1 Be7 (better is 10...Bd7!?+/-) 11.Rg7+- Bf6 12.Be5 Bf5 13.Bf6 Nf6 14.Rg5 Bc2 15.Na3 Bg6 (15...Bd3 16.Rc1 Rc8+/-) 16.Nc4 0-0-0 17.Rc1 Kb8 18.d4 Rhg8 19.h4 Ne4 20.Re5 f6 21.Re7 f5 (21...Rde8 22.Re8 Be8+-) 22.Na5 Nd6 23.Rcc7 (23.Ne5 Rc8 24.Rc5 Be8+-) 23...Rc8 24.Rcd7 Rgd8 (24...Rc1 25.Ke2 Rc2 26.Nd2+-) 25.Ne5 Rd7 26.Rd7 b6 (26...Rc1 27.Kd2 Ra1 28.Rd6 Ra2 29.Kc3 Ra5 30.Ng6 hg6 31.Rg6 Rb5+-) 27.Nac6 Ka8 (27...Rc6 28.Nc6 Kc8 29.Rd6 f4 30.Na7 Kc7 31.Rc6 Kb7+-) 28.Ra7 1–0. Fournier,Frederic – Chalvet,Philippe, Partie Libre (Active), 1996.

5.Bc3 Nc4 6.d3 Nd6 7.d4 c6 (7...Bd7 8.a4=+) 8.a4 (8.bc6 bc6 9.Bd3 Ne4=) 8...cb5=+ 9.ab5 a6 (9...Bd7!? 10.Ba5 b6=+) 10.ba6= ba6 11.Bb4 (11.Ba5 Qf6=) 11...Bb7 12.c4 (12.Nf3 Nf6=) 12...dc4 13.Bd6 (13.Nd2 Bc6=+) 13...Qd6 14.Bc4?? (better 14.Qa4 Kd8 15.Nd2=+ (15.Qc4 Rc8 16.Qd3 Rc1 17.Kd2 Qc6-+)) 14...Qb4 (14...Bg2 15.Qa4 Ke7 16.Nf3 Bh1 17.Nbd2-+) 15.Nd2 (15.Kf1 Qc4 16.Ne2-+) 15...Bd5 (better 15...Bg2 16.Be6 Bh1-+) 16.Bd5+= ed5 17.Ngf3 Nf6 (17...Qb5 18.Rb1 Bb4 19.Qe2 Qe2 20.Ke2+=) 18.0-0 (18.Rb1 Qd6+/-) 18...Ne4 (18...Bd6 19.Qc2 Qb7 20.Rfc1+/-) 19.Ne4 (19.Qc2 Qb7+-) 19...de4+/- 20.Ne5 Bd6 21.Nc6 (21.Qc2!? 0-0 22.Rfb1+/-) 21...Qb5+= 22.Qc2 0-0 (22...Kd7!? 23.Na5 Qd5+=) 23.Qe4+/- Rfe8 (23...a5 24.d5+/-) 24.Qf3 Rac8? (better 24...Qb6+/-) 25.Na7+- Qd7 (25...Bh2 26.Kh1 Qb8 27.Nc8+-) 26.Nc8 Qc8 (26...Rc8 27.Ra6 Qc7 28.Qh3+-) 27.Qd5 (27.Rfc1 Qb8 28.g3 Be7+-) 27...Qe6 (27...Re6 28.Rfc1 Qb8 29.Rcb1+-) 28.Qe6 fe6 (28...Re6 29.Ra4+-) 29.Ra6 Bb4 (29...Rd8 30.Rb1 e5 31.d5+-) 30.Rb1 Be7 (30...Bf8 31.Rb7+-) 31.Re6 Kf7 32.Re5 (32.d5 Bf6 33.Rb7 Kf8 34.Re8 Ke8+-) 32...Bf6 (32...Rc8 33.f4 Rc7 34.Reb5+-) 33.Rb7 Re7 (33...Kf8 34.Re8 Ke8 35.f4+-) 34.Rbe7 Be7 35.g3 (35.Re7 Ke7 36.f4 Kd7+-) 35...Bf6 (35...Bb4 36.f4+-) 36.Rf5 g6 (36...Ke6 37.Rf6! gf6 38.e4+-) 37.Rf3 h5 38.Kf1 Ke6 39.h4 (better 39.d5 Ke7 40.Rf6 Kf6+-) 39...Be7 (39...Bg7 40.Ke2+-) 40.Ke2 Kd5 (40...Ba3 41.e4 Bb4 42.d5 Ke5 43.Kd3+-) 41.Kd3 (better 41.Rf7 Ba3 42.Rf6 Kc4+-) 41...Bd6 (41...Ke6+-) 42.Rf6 g5 43.hg5 Be7 44.Rg6 (44.e4) 44...Bd6+- 45.f4 Kc6 46.Rh6 Kd7 47.Rh5 (47.Rd6 Kd6 48.Ke4 Kc7+-) 47...Ke6 (47...Ke8 48.g6 Kf8+-) 48.Rh6 Kf5 49.Rh4 (49.Rd6 Kg4 50.g6 Kg3 51.Ke2 Kg4 52.g7 Kf5 53.g8Q Ke4 54.Qe6) 49...Be7 50.g4 Kg6 51.Rh6 Kg7 52.f5 Bg5 53.Rg6 Kh7 54.Rg5 Kh6 55.Rg6 Kh7 56.g5 Kh8 57.e4 (57.f6 Kh7 58.Rh6 Kg8 59.g6 Kf8 60.Rh8) 57...Kh7 58.Rh6 (58.d5 Kh8 59.d6 Kh7 60.d7 Kh8 61.d8Q Kh7 62.Qg8) 58...Kg7 59.e5 Kf7 60.d5 (60.Rh7 Ke8 61.e6 Kd8 62.Rd7 Kc8 63.d5 Kb8 64.e7 Kc8 65.e8Q) 60...Ke7 61.Kc4 (61.Rh7 Kd8 62.d6 Ke8 63.e6 Kf8 64.Rf7 Kg8 65.d7 Kh8 66.d8Q) 61...Kd7 (61...Kd8 62.g6 Ke8 63.g7 Kf7 64.f6 Ke8 65.g8Q Kd7 66.Rh7) 62.Kb5 (62.g6 Kd8 63.g7 Kd7 64.g8Q Kc7 65.Qf7 Kd8 66.Rh8) 62...Kc7 (62...Ke7 63.f6 Kd7 64.Rh7 Ke8 65.e6 Kd8 66.Kc6 Ke8 67.Rh8) 63.g6 Kd7 64.f6 (64.g7 Ke7 65.g8Q Kd7 66.Rh7) 64...Ke8 (64...Kc8 65.g7 Kd7 66.g8Q Kc7 67.Rh7) 65.e6 (65.Kc6 Kf8 66.Rh8) 65...Kf8 (65...Kd8 66.Kb6 Ke8 67.Rh8) 66.d6 (66.Rh8) 66...Kg8 67.Kb6 Kf8 68.Rh8 1-0. Fuirio - M31, Rated Classical game, lichess.org, 2013.

5.Bc3 c5 =.

5.d3 a6 6.ba6 Ra6 7.Nf3 =.

5.d3 Nf6 6.Nf3 Be7 (6...Bd6 7.Be5=) 7.Qd2 b6 8.c4 (8.Be2 a6 9.a4 Bd7=) 8...dc4 (8...a6 9.Be2=) 9.dc4 Qd2 (9...Bb7 10.Bd3=) 10.Nbd2 0-0 11.Be2 Bb4 (11...a6 12.0-0=) 12.0-0 (12.a3 Be7+=) 12...Rd8 13.Rfd1 (13.a3 Bd6+= (worse is 13...Rd2 14.Nd2 Bd2 15.Rad1+/-)) 13...Bb7 14.Bf6 (14.a3 Bd6=) 14...gf6 15.Nf1 (15.Rab1 c5=) 15...Bc3 (15...a6 16.Ng3=) 16.Rac1 Bb2 (16...Bb4 17.Ng3=) 17.Rc2 (17.Rb1 Bc3+=) 17...Ba3 (17...Rd1 18.Bd1 Ba3 19.Ng3=) 18.Rc3 (18.Rcd2 Rd2 19.Rd2 Bd6+=) 18...Bb2 (18...Rd1 19.Bd1 Bb4 20.Rc1=) 19.Rcd3 Rd3 20.Rd3 Nc4? (20...a6 21.Ng3=) 21.Rd7?? (better is 21.Rb3+-) 21...Ne5= 22.Rc7 Nf3 23.Bf3 (23.gf3 Bd5=) 23...Bf3 24.gf3 Be5 (24...a6 25.Rc2 Ba3 26.ba6=) 25.Rd7 (25.Rb7 f5+=). Turcot,J – Kjelkenes,K, corr, 1975.

5.d4 b6 6.Nf3 c5 (6...a6 7.Ne5=) 7.Ne5 (7.dc5 bc5 8.Be2 Nf6+=) 7...c4 (7...Nf6 8.dc5 Bc5 9.Bd3=) 8.Qf3 (8.Qh5 Nh6+=) 8...Nf6 9.Be2 Bd6 10.0-0 (10.Ba3 a6=) 10...0-0 (10...a6 11.Nc3+=) 11.Nd2 (11.Ba3 Ba3 12.Na3 Ne4 13.Nec4 Nc4 14.Nc4 a6+=) 11...Bd7 12.a4 Be5? (better is 12...a6=) 13.de5+- Ne8 14.Ba3 Nd6? (14...Nc7 15.Bf8 Qf8+-) 15.Bd6 Re8 16.e4 Qg5 17.Rfd1 Nb7 18.ed5 ed5 (18...Nd6 19.de6 (worse is 19.ed6 ed5 20.Nf1 Qe5+-) 19...Be6 20.ed6+-) 19.Qd5 (19.Nc4 Be6+-) 19...Nd6 20.Qd6 Bh3 (20...Qe5 21.Qe5 (21.Qd7?! Qe2 22.Nf3 Qc2+-) 21...Re5 22.Bc4+-) 21.Bf3 Rad8 22.Qc6 (22.Ne4 Rd6 23.Ng5 Rd1 24.Rd1 Bf5+-) 22...Re5 (22...Qe5 23.Ne4 Bf5 24.Rd8 Rd8+-) 23.Ne4 Qh4 (23...Re4 24.Rd8 Qd8 25.Qe4+-) 24.gh3 (24.Rd8 Qd8 25.gh3 Re8+-) 24...h6 (24...Rf8 25.Qc4 Qh3 26.Bg2+-) 25.Rd8 Qd8 26.Qc4 (better is 26.Rd1 Qe7 27.Rd7+-) 26...Qf6 (26...Qd7+-) 27.Nf6 gf6 28.Kh1 (28.Qc7 h5+-) 28...Rc5 29.Qg4 Kf8 30.c4 (30.c4 h5 31.Qd7+-; better is 30.Qd7 Kg7+-) 1–0. tschulz – PublicEnemy, MySchachOpen, 2005.

5.d4 Bd6 6.c4 (better 6.Ba3!?=) 6...Nc4-/+ (6...dc4?! 7.Bc3 c6 8.d5=) 7.Bc4 dc4 8.d5 (better 8.Nc3-/+) 8...ed5?? (better 8...Nf6 9.de6 Be6–+) 9.Bg7+- Ne7 (9...Nf6 10.Bh8 Be5+-) 10.Bh8 Bf5 (10...Ng6 11.Bd4+-) 11.Nc3 Be6 (11...a6 12.Nf3+-) 12.Nf3 Qd7 13.0-0 0-0-0 14.Bd4 b6 (14...Bg4 15.Ba7 Qf5 16.Ne2 Bf3 17.gf3+-) 15.a4 (15.Qa4 Kb8+-) 15...h5 (15...Bg4 16.Bf6+-) 16.a5 Nf5 (16...Bg4 17.ab6 cb6 18.Kh1+-) 17.ab6 cb6 18.Qa4 (18.Ne5 Be5 19.Be5 h4+-) 18...Bb8 (18...Nd4 19.Nd4 Qc7 20.Kh1+-) 19.Ne5 (19.Bf6 Rg8+-) 19...Be5 (19...Qc7 20.f4+-) 20.Be5 Rg8 (20...Ne7 21.Qa7 Qa7 22.Ra7+-) 21.Rfd1 Nh4 22.g3 (22.Bg3 Nf5 23.Qa7 Qa7 24.Ra7 Ng3 25.Ra8 Kb7 26.Rg8+- (26.fg3?! Ra8 27.Nd5 Ra3=)) 22...Nf3 23.Kh1 Ne5 24.Ne4! f5? (24...de4 25.Qa6 Double attack (25.Rd7 Pinning; 25.Rd7 Deflection; 25.Rd4 Decoy)) 25.Nf6 Qe7? (25...Qb7 26.Ng8 d4 27.Kg1 Nf3 28.Kf1 Nh2 29.Ke2 d3 30.Kd2 Qg7 31.Qa6 Kd8+-) 26.Ng8 Bg8 27.e4 (better 27.Qa7 Qa7 28.Ra7+-) 27...fe4 28.Qa6 (better 28.Qa7 Qa7 29.Ra7+-) 28...Kb8= 29.Rd2 Nf3 (29...Nd3!? 30.Rda2 Be6+=) 30.Rda2+- c3 31.Qb6?? (better 31.Qa7 Qa7 32.Ra7+-) 31...ab6–+ 32.Ra8 Kb7?? (32...Kc7 33.R1a7 Kd6 34.Re7 Ke7 35.Rg8 d4 36.Rg7 Kd6 37.Rg6 Kc5 38.Rc6 Kb4–+) 33.R1a7 1–0. Agiant – jsmora, lichess.org, 2019.

5.d4 Nf6 6.Nf3 Bd6 7.Nbd2 0-0 8.a4 c6 9.Ba3 Ba3 10.Ra3 cb5 11.ab5 b6 12.Ne5 Nd7 13.Nd7 Qd7 14.Bd3 Qc7 15.Qh5 g6 16.Qe2 Nb7 17.0-0 Nd6 18.Rfa1 Bd7 19.e4 de4 20.Ne4 Ne4 (20...f6 21.Nd6 Qd6 22.Qe4+-) 21.Be4+- Rac8 22.Bd3 e5 (better 22...Ra8+-) 23.Ra7 (23.Qe5?! Qe5 24.de5 Rc5 25.Ra7 Bb5 26.Bb5 Rb5+/-) 23...Qd6 24.de5 Qe6 25.R1a4 Rc5 26.f4 Qg4 (26...Qd5 27.Rb4+-) 27.Qg4 Bg4 28.Rb7 Be6 (28...Bd1 29.Rb6 Bc2 30.Bc2 Rc2 31.h3+-) 29.Rb6 Rfc8 30.Rb7 Kg7 31.b6 R5c6 (31...Bd5 32.Rba7+-) 32.Raa7 Rc5 (32...h6 33.g4! Bd5 34.f5 gf5 35.Bf5+-) 33.Kf2 (33.Re7 R5c6 34.b7 Rf8+-) 33...h5 (33...Rc2 34.Bc2 Rc2 35.Ke3 Rc3 36.Kd2+-) 34.Re7 Kh6 (34...R5c6 35.b7 Rf8+-) 35.b7 Rb8 36.Ra8 Rcc8 (36...Rb7 37.Rb7 Bd5 38.Rh8 Kg7 39.Rbb8+-) 37.bc8Q Rc8 38.Rc8 Kg7 39.Rb8 h4 (39...Kh7 40.Ree8 Bc8 41.Rec8 Kg7 42.Rg8 Kh6 43.Rh8 Kg7 44.Rbg8) 40.Ree8 (40.Ree8 f6 41.Re6 Kf7 42.Rf6 Kg7 43.Rb7 Kh6 44.Rg6 Kh5 45.Rh7) 1-0. Yujiro – lysenkodom, Rated Classical game, lichess.org, 2013.

5.Nf3 b6 6.Be2 Nf6 7.0-0 Bd7 8.Ne5 Bc8 (8...c6 9.a4+=) 9.c4 (9.Bh5 Nh5 10.Qh5 Qf6+=) 9...dc4 (better 9...Nc4!? 10.Nc4 dc4 11.Bc4 a6+=) 10.Bh5+/- (10.Nc4?! Nc4 11.Bc4 a6+=; 10.Bc4?! Nc4 11.Nc4 Bb7=) 10...g6 (10...Qd5!? 11.Nf7 Qh5 12.Qh5 Nh5 13.Nh8 a6+/-) 11.Bf3+- Bb7? (better 11...Nd5 12.Ng4 h5 13.Bd5 ed5 14.Nf6 Ke7+-) 12.Bb7 Nb7 13.Nc6 (13.Nc4?! Bg7+=) 13...Qd5 14.Bf6 Rg8 15.Nc3 Na5 (15...Qh5+-) 16.Nd5 (16.Nd5 ed5 17.Qf3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 c6 6.a4 cb5 7.Bb5 Bd7 8.Ne5 Bb5 9.ab5 Nc4 (9...Nf6!?=) 10.Nc4+- dc4 11.0-0 (11.Qg4 a5+-) 11...Nf6 12.Qe2 Qd5 (12...Bd6 13.Qc4 0-0 14.Bd4+-) 13.Bf6 gf6 14.Nc3 Qc5 (14...Qd7 15.Qc4 f5 16.Qb3+-) 15.Qf3 (15.Ra4+-) 15...Bd6 (better 15...Qc7!?+-) 16.Qb7+- 0-0 17.Ne4 Qe5?? (17...Qc7 18.Qc7 Bc7+-) 18.f4 (18.f4 Qf5 19.Nd6+-; 18.Nd6?! Qd6 19.Qe4 Rfc8+-) 1–0. Anonymous – Anonymous, lichess.org, 2020.

5.Nf3 c6 6.Bd3 Bd7=.

5.Nf3 c6 6.Ne5 a6 (6...Nf6 7.Bd3=) 7.a4 Bd7 (7...Qc7 8.Bd3=) 8.Qh5 g6 (better is 8...Nh6!?+/-) 9.Ng6!+- fg6 (9...hg6 10.Qh8) 10.Qf3 Nh6 (10...cb5 11.ab5 Qc8 12.Bh8 Qc2 13.ba6 ba6 14.Ra5 Qb1 15.Qd1 Qd1 16.Kd1+-) 11.Bh8 Qe7 (11...Nf7 12.Bf6 Be7 13.Be7 Qe7 14.ba6 ba6 15.Nc3+-) 12.Bc3 Bg7 13.e4 Nc4 (13...b6 14.ba6 d4 15.Ba5 ba5 16.Na3+-) 14.Bc4 dc4 15.ba6 Ra6 16.Bg7 Qg7 17.Nc3 Ke7 (17...Nf7 18.Rb1 Bc8 19.Qe3+-) 18.Rb1 b5 19.ab5 cb5 20.Nb5 Bb5 (20...Qe5 21.Nc3+-) 21.Rb5 Ra1 22.Ke2 Ra7 23.Rhb1 Rd7 24.Qa3 Kf6 25.Kf1 Kf7 26.Rb7 Kf6 27.Qc3 (27…e5 28.R1b6 Kg5 29.Qe3 Kh5 30.Qh3 Kg5 31.Rd7 Qd7 32.Qd7 Nf5 33.ef5 Kg4 34.fg6 Kg5 35.g7 Kf4 36.Rf6 Kg5 37.g8Q Kf6 38.Qgg7) 1–0. Trkn – guest2631, ICC, 2004.

5.Nf3 Bd6?? 6.Bg7+- 1–0. guest2119 – guest348, ICC, 2002.

5.Nf3 Bd6?? 6.Bg7 Ne7 7.Bh8 Qd7 8.Bb2 (8.Ng5 h6 9.Nh7 Qd8+-) 8...c6 (8...Nc4 9.Bc4 dc4 10.Nc3+-) 9.a4 Nc4 (9...Qc7 10.bc6 bc6 11.d4+-) 10.Bc3 (10.Bc4 dc4 11.Na3 Ba3 12.bc6 Nc6 13.Ra3 Qd6+-) 10...a5 (10...cb5 11.ab5 Qb5 12.Na3 Ba3 13.Ra3+-) 11.d3 Nb6 12.Na3 (12.Be5 Ng6 13.Bd6 Qd6 14.bc6 Qc6+-) 12...e5 (12...Na4 13.Be5 Bb4 14.Nd2+-) 13.d4 (better 13.Be5!? Na4 14.c3 Nc5+-) 13...e4 (13...Na4 14.Bd2 e4 15.Ne5 Be5 16.de5+-) 14.Ng5 (14.Ne5 Qe6 15.bc6 bc6+-) 14...Qf5 (14...h6 15.Qh5 Ng8 16.Nh3+-) 15.f4 (15.Qh5 Ng8 16.g4 Qg6 17.Nh7 Bg4 18.Qg6 fg6 19.bc6 bc6+-) 15...h6 16.Nh3 Na4 17.Nb1 (better 17.Bd2!? Nb6+-) 17...Nc3 18.Nc3 Bb4 19.Qd2 cb5 20.Bb5 (better 20.Ng1 Bd7+-) 20...Kf8 (20...Bd7 21.g4! Qg4 22.Nf2+-) 21.g4! Qg6 (21...Qg4 22.Nf2 Decoy) 22.0-0-0 (better 22.Rg1!? Bg4 23.Rb1 Qh5+-) 22...Qg4? (better 22...Bg4 23.Rdg1 Rc8+/-) 23.Nf2+- Qg6 (23...Qe6 24.Kb2 a4+-) 24.Rhg1?? (24.Rdg1 Qb6 25.Nfd1 Ba3 26.Kb1 Bd7+-) 24...Qd6? (better 24...Qb6 25.Rde1 Bc3 26.Qc3 Qb5+=) 25.Qe2?? (better 25.Rdf1+-) 25...Bc3 26.Qh5 (26.Rg8 Ng8 27.Rg1 Qa3 28.Kd1 Qa1) 26...Qb4 (26...Qa3 27.Kb1 Qb2) 27.Qh6 1-0. alex296 - skgtr61, Rated Classical game, lichess.org, 2013.

5.Nf3 Bd7 6.a4 c6 7.Ne5 f6?? 8.Qh5+- (8.Nd7?! Qd7 9.Bc3 Nc4+=) 8...Ke7 (8...g6 9.Ng6! Qc7 10.Nh8 Kd8+-) 9.Qf7 (9.Ba3 c5 10.Bc5) 9...Kd6+- 10.f4 (10.Ba3 c5 11.Nd7 (11.Qd7?! Qd7 12.Nd7 Kd7=) 11...Qd7 12.Bc5 Kc7 13.b6 ab6 14.Bb6 Kd6 15.Qd7 Kd7 16.Bb5 Nc6 17.a5+/-) 10...Be8?? (better 10...fe5 11.Be5 Kc5 12.Bd4 Kd6 13.Be5 Kc5 14.Bd4 Kd6 15.Be5=) 11.Ba3 (11.Qf8 Qe7 12.Nf7 Kd7 13.Qe7 Ne7 14.Nh8 Bh5+-) 11...c5 12.Qf8 Qe7 13.Bc5! Kc7?? (13...Kc5 14.Qe7 Double attack) 14.Be7+- Ne7 15.Qe7 Bd7 16.Qd7 Kb6 (16...Kb8 17.Nc6! bc6 18.bc6 Rc8 19.Ba6 Rc6 20.Qd8 Rc8 21.Qc8) 17.Qe6 (17.Qe6 Kc7 18.Qe7 Kb8 19.Nd7 Kc8 20.Nc5 Re8 21.Qe8 Kc7 22.Qd7 Kb6 23.Qd6 Nc6 24.a5; 17.Qd6 Nc6 18.a5) 1-0. Fuirio (1675) - oo313oo, Rated Classical game, lichess.org, 2013.

5.Qg4 e5 6.Qg3 e4 (better 6...f6!?=) 7.Bg7 Bg7 8.Qg7 Be6?? (better 8...Qf6 9.Qf6 Nf6+/-) 9.Qh8+- f6 (9...Qf6 10.Qf6 (10.Qh7?! Nh6+/-) 10...Nf6 11.Ne2+-) 10.Qh7 Qd6 11.Nc3 0-0-0. felixrbran – StoneHolt, Rated Classical game, lichess.org, 2013.

6.Bd4 a6 A) 7.Nc3 ab5 (7...Nf6 8.Bc4 dc4 9.ba6 Ra6 10.Qe2 Bd6 11.Qc4 0-0) 8.Nb5 Bd7 9.Bc4 dc4 10.Rb1 f6 11.Qe2 c5; B) 7.Bc4 dc4 8.Nc3 f6 9.0-0 ab5 10.Nb5 c6 11.Nh4 g6; C) 7.ba6 Ra6 (7...Nh6 8.a7 c5 9.Bc4 dc4 10.Be5 Ra7 11.Nc3 f6) 8.Nc3 c5 9.Bc4 dc4 10.Be5 f6 11.Bg3 e5.

6.Bd4 c5 7.bc6+/- bc6 (7...Nf6 8.cb7 (8.Bc4 dc4 9.cb7 Bb7 10.Nc3 Bd6 11.Rb1 Rb8) 8...Bb7 9.Nc3 Bd6 10.Rb1 Ba6 11.Bc4 Bc4 12.d3) 8.Nc3 (8.Bc4 dc4 A) 9.Nc3 f6 10.Ne4 (10.e4 e5 11.Be3 Bd6) 10...e5 11.Bc3 Qd5 12.Ng3; B) 9.Qe2 c5+/- 10.Be5 (10.Bc3 Nf6 11.Na3 Bd6) 10...f6 11.Bg3 Ne7 12.Qc4) 8...Bb4?? (better is 8...Na3= 9.Bd3 (9.Rc1 f6 10.Na4 Nh6 11.c4 e5) 9...f6 10.Na4 Qa5 11.c4 dc4 12.Be4; 8...f6 9.Bc4 dc4 10.e4 (10.Ne4 e5 11.Bc3 Qd5) 10...e5 11.Be3 Bd6 12.0-0) 9.Bg7+- 1–0. Anonymous – Anonymous, internet, 2011.

6.Bd4 Bd7 A) 7.Bc4 dc4 8.Nc3 a6 9.Ne5 Nf6 10.ba6 Ra6 11.Nc4 b5; B) 7.a4 Nf6 (7...a6 8.Bc4 dc4 9.Nc3 Nf6 10.Ne5 Bb4 11.Rb1 Bc3) 8.Nc3 a6 9.Bc4 dc4 10.Ne5 Bb4 11.Rb1 Bc3; C) 7.Nc3 Nf6 (7...Nd6 8.Bd3 Ne7 9.0-0 Nef5 10.Qe2 Be7 11.Ne5 0-0) 8.Bc4 dc4 9.Qe2 a6 10.Qc4 ab5 11.Nb5 c6.

6.Bd4 f6!?= 7.Bc4 (7.Nh4 Nh6 8.Bc4 dc4 9.f4 Bd6 10.0-0 0-0 11.Qe2 a6) 7...dc4 8.Qe2 (8.0-0 e5 9.Bb2 Be6 10.Nc3 Ne7 11.Qe2 Kf7 12.h4; 8.e4 a6 9.ba6 Ra6 10.Nc3 Nh6 11.Qe2 e5) 8...e5 9.Bb2 Be6 10.0-0 Kf7 (10...a6 11.ba6 Ra6) 11.Be5 (11.Nc3 Ne7) 11...fe5 12.Ne5.

6.Bd4 Nh6 A) 7.Bc4 dc4 (7...c5 8.bc6 dc4 9.Nc3 bc6 10.Qe2 Ba6 11.0-0 c5) 8.Qe2 a6 9.Qc4 ab5 10.Qb5 Bd7 11.Qb7 Rb8; B) 7.h3 Nf5 (7...a6 8.Nc3 Nf5 9.Bc4 dc4 10.Qb1 Be7 11.ba6 ba6) 8.Nc3 Nb2 9.Qb1 Nd4 10.Nd4 Ba3 11.Be2 0-0; C) 7.Nc3 a6 (7...f6 8.Bc4 dc4 9.e4 e5 10.Be3 Ng4 11.0-0 Be6) 8.Bc4 dc4 9.Qb1 Nf5 10.ba6 ba6 11.0-0 f6.

7.0-0 Qd5 8.a4 f6 (8...Nf6 9.Qe2+=) 9.Nc3+/- Qh5 10.Qe2 e5 11.Qc4 Bd6 (11...Bg4 12.Ne1 Bd6 13.Ba3+/-) 12.Ne4 (12.Nd5 Qf7+/-) 12...Ne7 (12...Bg4 13.Ng3 Qg6 14.Nh4+/-) 13.Nd6 (13.d4 ed4 14.Nd6 cd6 15.Nd4 Qg5+-) 13...cd6+/- 14.Ba3 Qf7 15.Qf7 Kf7 16.Bd6 Bf5 (16...Bg4 17.a5+/-) 17.Be7 Ke7 18.c3 (18.d4!? Rhc8 19.de5 fe5 20.Ne5 Rc2+-) 18...Bd3+/- 19.Rfc1 Rhd8 20.h3 Be4 (20...Rd7 21.c4+/-) 21.d4+- Bf3 22.gf3 Rac8 23.Kg2 Rc4 24.Kg3 Rdc8 25.Ra3 Kf7 (25...ed4 26.ed4 Kd6 27.a5+=) 26.f4 (26.Rd1 Ke6+-) 26...e4? (better is 26...ed4 27.ed4 Rd4 28.cd4 Rc1+=) 27.f3 Re8 28.fe4 Re4 29.Kf3 f5 30.a5 a6 (30...g6 31.Rb3+-) 31.ba6 ba6 32.Rb1 Rc6 33.Rb6 Ree6 34.Rab3 Rh6 35.Rc6 Rc6 36.d5 (36.Rb7 Kf8+-) 36...Rh6 (36...Rc5 37.Rb7 Ke8 38.Rg7 Rd5 39.Rh7 Ra5 40.Ke2+-) 37.Kg3 Rg6 38.Kh2 Ke7 (38...Rd6 39.Rb7 Kf8 40.c4+-) 39.Rb6 (better is 39.c4 Rd6 40.Rb7 Kf8 41.Rb6+-) 39...Kd7 (39...Rb6 40.ab6 Kd8+-) 40.Rg6 hg6 41.Kg3 Kd6 42.c4 Kd7 43.c5 Kc7 (43...Ke7 44.Kh4 Kf6+-) 44.Kh4 Kd7 45.Kg5 Ke7 46.Kg6 Kf8 47.Kf5 1–0. Hal1958 – Ed, playchess.de, 2002.

7.0-0 Qd7 8.a4 Nf6 (8...a6 9.Ne5 Qd5 10.Bd4+-) 9.Bf6 (9.Qe2 a6 10.Bf6 gf6+-) 9...gf6 10.Qe2 Qd5 11.Nc3 Qc5 (11...Qf5 12.Qc4 Rg8 13.Kh1+-) 12.Ne4 Qb4 (12...Qe7!?+-) 13.Nf6+- Ke7 (13...Kd8 14.Ne5 Qe7 15.Nh5+-) 14.Ne5 c3 (14...Bg7 15.Qh5 Rf8 16.Nh7 Be5 17.Qe5 Rd8+-) 15.Qh5 cd2 (15...Kf6 16.dc3 Qe4+- (worse 16...Qc3 17.Qf7 Ke5 18.Qf4 Kd5 19.Rfd1 Kc5 20.Qc7 Kb4 21.Rdb1 Qb3 22.Rb3)) 16.Qf7 Kd8 (16...Kd6 17.c4 Bh6 18.f4 Qc4 19.Nc4 Kc5 20.Qc7 Kb4 21.Rab1 Ka4 22.Qa5) 17.Qe8 1–0. GuestGMLC – GuestDSCH, freechess.org, 2018.

7.Na3 Qd5 8.Qe2 Nf6 9.Nc4 Bd7 10.a4 a6 11.0-0 Bd6.

7.Na3 Bd7 8.0-0 Nf6 9.Rb1 c3 10.dc3 a6 11.c4 Ba3 12.Ba3.

7.Na3 Bd7 8.Rb1 a6 9.ba6 b5 10.Ne5 Ra6 11.Nb5 Bb5.

7.Na3 Bd7 8.Qe2 Nf6 9.Qc4 Be7 (9...a6 10.Qb3 Ba3 11.Ba3 ab5 12.0-0) 10.0-0 (10.Ne5 0-0 11.0-0 a6 12.Rfd1) 10...0-0 11.Ne5 a6 12.Rfd1.

7.Nc3 a6 8.0-0 Nf6 9.Qe2 ab5 10.Nb5 c6 11.Bf6 gf6 12.Nc3.

7.Nc3 a6 8.a4 Nf6 9.Qe2 ab5 10.ab5 Ra1 11.Ba1 Bd6 12.Qc4.

7.Nc3 a6 8.Qe2 ab5 9.Nb5 c6 10.Nc3 Qb6 11.Rb1 Qc5.

7.Nc3 Bd7 8.Qe2 a6 9.Qc4 Nf6 10.0-0 Bd6 11.e4 ab5 12.Nb5.

7.Nc3 Nf6 8.Qe2 a6 9.a4+/- ab5 10.ab5 Ra1 11.Ba1 Bd6.

7.Nc3 Nf6 8.Qe2 a6 9.Qc4 ab5 10.Nb5 c6 11.Bf6 Qf6.

7.Nc3 Nf6 8.Qe2 Bd6 9.0-0 0-0 10.Qc4 a6 11.a4 Bd7.

7.Nc3 Nf6 8.Qe2 Bd6 9.Qc4 0-0 10.0-0 Bd7 11.e4 e5 12.d4.

7.Nc3 Nf6 8.Qe2 Bd7 9.0-0 Bb4 (9...a6 10.a4+/- Bd6 11.e4 e5) 10.Qc4+- Bc3 (10...Be7 11.e4 (11.a4 0-0) 11...c6 12.a4+/-) 11.Bc3 (11.Qc3?! Bb5+/- (11...a6+/-); worse is 11.dc3 c6+/-) 11...Ne4?? (better is 11...0-0+-; 11...a6+-) 12.Qe4 (12.Qe4 Bb5 13.Qg4+-) 1–0. tony – martinsen, internet, 2011.

7.Qe2 a6 8.a4 Nf6 9.Qc4 Bd6 10.Nc3 0-0 11.0-0 Bd7.

7.Qe2 a6 8.a4 Nf6 9.Qc4 Bd6 10.Nc3 Bd7 11.0-0 0-0 12.h3.

7.Qe2 a6 8.ba6 Ra6 9.Qc4+-.

7.Qe2 Qd5 8.Nc3+- Qc5 9.a4 a6 (9...Qh5 10.0-0+-) 10.Ba3+- Qb6 11.Bf8 Kf8 12.Qc4 ab5 13.Nb5 c6 14.Nd6 Bd7 (14...c5 15.Ne4+-) 15.Qf4 f6 16.0-0 c5 17.Rfb1 Qc6 (17...Ra4 18.Qa4 (18.Rb6?? Ra1 19.Rb1 Rb1 20.Ne1 Re1) 18...Qb1 19.Rb1 Ba4 20.Rb7+-) 18.Nb7 (better 18.Ne5 g5 19.Nc6 gf4 20.Rb7 Ne7 21.Rd7 Nc6 22.Rf7 Kg8 23.Rf6 fe3 24.fe3 Nd8+-) 18...e5 (18...Bc8 19.Nd6 Ne7+-) 19.Qg3 (better 19.Ne5 g5 20.Nc5 gf4 21.Ncd7 Ke7 22.Nc6 Kd7+-) 19...Ra4?? (better 19...Ra7 20.Nc5 Qc5=) 20.Ra4+- Qa4 21.Nd6 (better 21.Nc5!? Qc6 22.Nd7 Qd7 23.Ne5 fe5 24.Qf3 Nf6 25.Rb8 Ke7+-) 21...Qc2 (21...Qg4 22.Ne5! Qg3 23.Nd7 (worse 23.fg3 fe5 24.Nc4 e4=+) 23...Ke7 24.Nf5 (worse 24.fg3 Kd6 25.Nb6 f5+-) 24...Kd7 25.Ng3+- (worse 25.fg3 g6+-)) 22.Rb8 Ke7 23.h3?? (23.Qg7 Kd6 24.Kh1 Kc7+-) 23...Qd1?? (better 23...Qg6 24.Qg6 hg6+-) 24.Kh2+- Kd6 (24...g5 25.Ng5 Kd6 26.Nf7 Kc7 27.Rf8+- (27.Nh8?! Kb8 28.Qg8 Kb7+-)) 25.Qg7 Bh3 (25...e4 26.Qh8 ef3 27.Qg8 Qa4 28.Rb6 Bc6 29.Qd8 Ke5 30.Qc7 Ke4 31.Rc6 Kd3 32.Qh7 Ke2 33.Rc5 Kf2+-) 26.Qh8 (26.Rb6 Kd5 27.Qb7 Kc4 28.Qe4) 26...Nh6 (26...Bg2 27.Kg2 e4+-) 27.Qf6 Kd5 28.Rd8 (28.e4 Ke4 29.Qe5 Kd3 30.Qe3 Kc4 31.Qe4) 28...Ke4 (28...Bd7 29.Rd7 Kc4 30.Qa6 Kb3 31.Rb7 Kc2 32.Qc4) 29.d3 (29.Qe5) 29...Qd3 30.Rd3 (30.Rd3 Ng4 31.Kh3 Nf6 32.Rd6+-; 30.Qe5) 1–0. GuestNPLQ – GuestYHQT, freechess.org, 2018.

7.Qe2 Nf6 8.Qc4 Qd5 9.Qd5 ed5 10.Bf6 gf6 11.Nc3 Be6.

7.Nc3 a6 8.ba6 (8.Bc4 dc4 9.ba6 Ra6 10.Qe2 Bd6 11.Qc4 0-0) 8...Ra6 9.Bc4 dc4 10.Qe2 Bd6 11.Qc4 0-0 12.0-0.

7.Bc4 dc4 8.Nc3 a6 9.ba6 Ra6 10.Qe2 Bd6 11.Qc4 0-0 12.0-0.

7.Bc4 dc4 8.Qe2 a6 9.ba6 b5 10.Nc3 Ba6 11.a3 Bd6.

7.Bc4 dc4 8.Qe2 a6 9.ba6 c5 10.Bf6 Qf6 11.Nc3 (11.ab7 Bb7) 11...b5 12.Rb1.

7.Bc4 c5 8.Bf6 Qf6 9.Na3 Qb2 10.Qc1 Qc1 11.Rc1 dc4.

7.a4 a6 8.Bc4 dc4 9.Nc3 Bb4 10.Qb1 Qe7 11.Ne5 0-0.

7.a4 e5 8.Ne5 Ne5 9.Be5 Bd6 10.Bd4 c5 11.bc6 bc6.

7.Nc3 a6 8.ba6 Ra6 9.Bc4 dc4 10.Qe2 Bd6 11.Qc4 0-0.

7.Nc3 Bb4 8.Rb1 Bc3 9.Bc3 Nd6 10.Bd3 0-0 11.0-0 Nfe4.

8.Rb1 Bc3 9.Bc3 Nd6 10.Bd3 (10.Bd4 0-0 11.Be2 Nf5) 10...0-0 11.0-0 (11.Bb4 Nfe4) 11...Nfe4 12.Bb4.

8.Bc4 Bc3 9.dc3 dc4 10.Qe2 a6 11.Qc4 0-0.

8.Bc4 dc4 9.0-0 a6 10.ba6 (10.Qb1 Qe7 11.Bf6 gf6) 10...b6 11.a7 Ra7 12.Qe2.

8.Bc4 dc4 9.Qe2 Bc3 10.dc3 0-0 11.Rd1 Qe7 12.Qc4 Nd5? (better 12...Ne8+-) 13.Bc5 Qf6 14.Bf8 Nc3 (14...Kf8 15.Rd4 Qe7+-) 15.Rd4 Ne4 (15...Nd5 16.Ba3 h5+-) 16.Qc7 Kf8 (16...Qf5 17.0-0 h5+-) 17.Rd8 (17.Rd8 Qd8 18.Qd8) 1–0. Janek – Zapowiedz, internet, 2018.

8.Bc4 dc4 9.Qe2 Bc3 10.dc3 a6 11.ba6 b6.

8.Bc4 dc4 9.Qe2 Bc3 10.dc3 a6 11.Qc4 0-0 12.ba6+=.

6.c4 Nc4 7.Bc4 dc4 8.0-0 Bd7 (8...e5 9.Ba3-/+) 9.a4 (9.Ne5 g6 10.Nd7 Qd7= (worse 10...Kd7 11.Qg4+=)) 9...a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Bb4 (better 12...c6!? 13.Ba3 cb5 14.Bf8 Kf8=+) 13.Qa4+= Qe7 (13...Bd6 14.Qc4 Nh6 15.Ra1+=) 14.Ne4 (14.Qa8 Kf7 15.Qb7 Qc5+=) 14...c6= 15.Qa8 (15.b6 Bc8 16.Rc1+=) 15...Kf7 (15...Qd8 16.Qa4 Qa5 17.Qa5 Ba5 18.Nd6 Ke7 19.Nb7 Bc7 20.Ba3 Kf7+-) 16.b6+= Be8 17.Ra1 Nh6? (better 17...c5!? 18.Qb7!? Qb7 19.Nd6 Ke7 20.Nb7 Nh6+-) 18.Ra7+- Rg8 19.Qc8 (better 19.Rb7 Bd7 20.Qa4+-) 19...Nf5?? (better 19...Bd7 20.Qb7 Rd8+-) 20.Rb7 (20.Qb7?! Qb7 21.Rb7 Kg6+-) 20...Qb7 21.Qb7 Kf8 (21...Kg6 22.Qc8 Bf7 23.b7+-) 22.Qc7 g6 23.b7 (23.b7 Rg7 24.Qg7 Ng7 25.b8Q+-) 1–0. DEFFM – GuestFZVG, freechess.org, 2018.

6.Bd3 Bc5 7.0-0 (7.Ng5 Ke7 8.Nh7 e5+/-) 7...c6 (7...e5 8.Be2=) 8.a4 (8.Ng5 Ke7+= (8...fg5? 9.Bg7 Nf6 10.Bh8+-)) 8...Bd7 (8...e5!? 9.Be2 Bd6=) 9.Ng5!+/- fg5? (better is 9...Ke7 10.Nh7 e5+/-) 10.Bg7+- Nf6 (10...g4 11.Bh8 Qh4 12.Be2+-) 11.Bh8 cb5 (11...Kf7 12.Bf6 Qf6 13.Qh5 Ke7 14.Qh7 Kd6 15.bc6 bc6 16.Nc3+-) 12.ab5 Qb6 (12...Nc4 13.Bc4 dc4+-) 13.Bf6 Kf7 (13...Be7 14.Qh5 Kd8 15.Bc3+-) 14.Bg5 Nc4 (14...Rg8 15.Qh5 Kf8 16.Bh6 Ke7 17.Bh7 Re8 18.Qh4 Kd6+-) 15.Qh5 Kg7 (15...Kf8 16.Qh6 Kf7 17.Qh7 Kf8 18.Bg6 Bb5 19.Qh8) 16.Qh7 Kf8 17.Qe7 (17.Bg6 Bb5 18.Qh8) 17...Kg8?? (better is 17...Be7 18.Be7 Ke7 19.Bc4 dc4–+) 18.Bh7 1–0. Waibel,Ulrich (1830) – Munkwitz,Wolfgang (1825), remoteschach.de, 2004.

6.Bd3 Bd6 7.Qe2 (7.Nh4 Nh6 8.Qh5 Kf8+=) 7...Ne7= 8.0-0 e5 9.e4 Bg4 10.Re1 Ng6 (10...c6!? 11.h3 Bh5=) 11.ed5+- Nf4 12.Qe4 Nd3 13.Qd3 0-0 14.Bc3 Re8?? (better 14...Bf3 15.gf3 b6+-) 15.Ba5+- b6 (15...a6 16.h3 Bf3 17.Qf3 ab5 18.Bc3+-) 16.Bc3 f5 (16...Qd7 17.Qc4 a6 18.ba6 b5+-) 17.Ne5 Be5 (17...Qg5 18.g3 f4 19.gf4+-) 18.Be5 Qg5 (18...Qd6 19.Qg3 Qd5 20.Nc3+-) 19.f4 Qh4 (19...Qe7 20.Nc3 Rac8 21.h3+-) 20.Re3 Re7 (20...Qe7 21.Nc3 Qf7 22.Qc4+-) 21.d6 cd6 22.Qd5 Kh8 23.Qa8 (23.Qa8 Re8 24.Qe8) 1–0. GuestMGWM – betitoxxx, freechess.org, 2019.

6.Bd3 Ne7 7.Nh4=.

6.d4 Bd7=.

6.a4 Bb4 7.Bd3 0-0 8.0-0 a6 (8...Bd6 9.Nc3=) 9.Ne5+= c6 (9...Qd6 10.f4+=) 10.f4 (10.Nc3 Qc7 11.f4 Nd7+=) 10...Re8 (10...Ne4!? 11.Bc3 Nc3 12.Nc3 cb5 13.ab5 Bc3 14.dc3 ab5 15.Bb5 f6=) 11.Qf3 Bc5 (11...cb5 12.ab5 Nc4 13.Nc4 dc4 14.Bc4+-) 12.Qg3 (better 12.ba6 ba6 13.Nc3+-) 12...Ne4?? (better 12...Nh5 13.Qh3 g6+-) 13.Be4+- de4 (13...f6 14.Bh7! Kf8+-) 14.Nf7! Kf7 (14...Kf7 15.Qg7) 15.Qg7 1–0. DEFFM – abdjoma, freechess.org, 2019.

6.Bc3 c6 7.a4 (7.Ne5 Bd6=) 7...Ne4 8.Ba5 (8.Bb2 Bd7=) 8...Qa5=+ 9.Nd4 (9.Bd3 Nc5 10.Be2 Bd7=+ (worse 10...Na4 11.c4+/-)) 9...Bd7 10.Na3? (10.bc6 bc6 11.Bd3 Nc5=+) 10...cb5?? (better 10...Nd2 11.Ke2 Ne4-+ (11...Qa4?! 12.bc6 bc6 13.Qd2-/+)) 11.Nab5 (11.Nb3 Qd8 12.Bb5=+) 11...Bb5 (better 11...a6!? 12.Nb3 Qd8-/+) 12.Bb5= Kd8 13.c3 a6 14.Bd3 Bc5 (14...Nc5!? 15.Bc2 Qc7=) 15.Nb3 (15.Qg4 Bd4 16.ed4 Ke7 17.Be4 de4 18.Qe4 Qd5+/-) 15...Qc7 16.Be4 de4 17.Qc2 (17.Qg4 Bd6 18.Qe4 h5+/-) 17...f5+= 18.d4 (18.Nc5 Qc5 19.0-0 Ke8+=) 18...ed3 (18...Bb4 19.0-0=) 19.Qd3 Ke7 (19...Bd6 20.Rb1=) 20.0-0 (20.Nc5 Qc5 21.Qd4 Qd4 22.ed4 Rac8=) 20...Rad8 (20...Bd6 21.h3=+) 21.Qc4 g6?? (better 21...Bd6 22.Qh4 Kf7=) 22.Qc5 (22.Nc5 Rd5 23.Qh4 Kf7+-) 22...Qc5 23.Nc5 Rb8 (23...Rc8 24.Nb7 Rc3 25.Rab1+-) 24.Rfd1 a5 (24...Rbc8 25.Rd7 Kf6 26.Nb7 Rc3 27.Nd6+-) 25.Rd7 Kf6 26.Rb7 Rb7 27.Nb7 Rc8 28.Rc1 (better 28.Ra3!? h6+-) 28...Rc4 29.Na5 Ra4 30.Nc6 Rc4 31.Nd4 e5 32.Nf3 h6 Black prepares the advance f4 33.h3 g5 Black intends f4 34.Nd2 Rc7 35.c4 f4 36.e4 h5 37.f3 g4 (37...Ke6 38.Kf2+-) 38.Kf2 (better 38.fg4!? hg4 39.hg4 Rg7+-) 38...gh3 39.gh3 h4 40.c5 Ke6 41.Nf1 (41.c6 Ke7+-) 41...Kd7 (41...Ra7 42.Rc2+-) 42.Nh2 Ra7 (42...Kc6 43.Ng4 Re7 44.Rd1+-) 43.Ng4 Ra2 44.Kg1 Ke6 (44...Ra3 45.c6 Kc7 46.Ne5+-) 45.c6 Ra5 (45...Ra8 46.c7 Rc8 47.Rc6 Ke7 48.Ne5 Rg8 49.Kf2 Rc8+-) 46.c7 Ra8 47.c8Q Rc8 48.Rc8 Kd6 49.Rd8 Ke6 50.Re8 Kf7 51.Re5 Kg6 52.Ra5 (52.Re7 Kg5 53.Re6 Kh5 54.Ne5 Kg5 55.Nf7 Kh5 56.Rh6) 52...Kg7 53.Ra6 (53.Ra7 Kf8 54.e5 Ke8 55.e6 Kd8 56.Nf6 Kc8 57.e7 Kb8 58.Rd7 Kc8 59.e8Q) 53...Kf7 54.Ne5 (54.Nh6 Kg7 55.Nf5 Kh7 56.e5 Kg8 57.e6 Kh7 58.e7 Kg8 59.e8Q Kh7 60.Ra7) 54...Kg7 55.Kf2 Kh7 56.Ke2 Kg7 57.Kd3 Kh7 White now must not overlook the idea Ng6 58.Kd4 Kg7 (58...Kh8 59.Nf7 Kg7 60.Ra7 Kf8 61.Nd6 Kg8 62.e5 Kh8 63.e6 Kg8 64.e7 Kg7 65.e8Q Kh6 66.Qe6 Kg5 67.Ra5) 59.Ng4 (59.Ra7 Kf6 60.Kd5 Kg5 61.Ra6 Kh5 62.Kc5 Kg5 63.Nf7 Kh5 64.Rh6) 59...Kf7 60.Ke5 (60.e5 Kg7 61.Ra7 Kf8 62.e6 Ke8 63.Nf6 Kd8 64.e7 Kc8 65.e8Q) 60...Ke7 (60...Kg7 61.Ra7 Kg6 62.Ke6 Kg5 63.Kf7 Kh5 64.Ra5) 61.Kf4 (61.Ra7 Kd8 62.Kd6 Kc8 63.Kc6 Kd8 64.Nf6 Kc8 65.Ra8) 61...Kf7 62.Kg5 Kg7 (62...Ke7 63.e5 Kd7 64.Nf6 Kc7 65.Nd5 Kb7 66.Rb6 Ka8 67.e6 Ka7 68.e7 Ka8 69.e8Q Ka7 70.Qa4) 63.Kh4 (63.Ra7 Kf8 64.e5 Ke8 65.e6 Kf8 66.Kf6 Kg8 67.e7 Kh7 68.e8Q) 63...Kf7+- 64.Kg5 Ke7 65.Kf5 Kf7 (65...Kd7 66.Nf6 Kc7 67.Nd5 Kb8 68.Rb6 Ka7 69.e5 Ka8 70.e6 Ka7 71.e7 Ka8 72.e8Q Ka7 73.Qa4) 66.Ra7 Kg8 (66...Ke8 67.e5 Kd8 68.e6 Kc8 69.e7 Kb8 70.Rd7 Kc8 71.e8Q) 67.Kf6 Kh8 68.Kg6 Kg8 1-0. Fuirio (1675) – gits, Rated Classical game, lichess.org, 2013.

6.Bd3 Be7 7.Nc3 0-0 8.0-0 c5 9.bc6 Nc6 10.Nb5 a6 11.Nbd4 b5?? (better is 11...Bd7=) 12.Nc6+- Qc7 13.Ne7 Qe7 14.a4 b4 15.Ne5 Ne4 16.Qh5 g6 17.Qe2 f5 (17...f6 18.Nc4!+-) 18.Bd4 Qe8 (18...Bb7 19.Rab1+-) 19.f3 Nd6 20.a5 Nf7 21.Rfb1 Rb8 (21...Ne5 22.Be5 Rf7 23.Rb4+-) 22.Nf7 Qf7 (22...Rf7 23.Be5 Ra8 24.Rb4+-) 23.Be5 Rb7 24.Ba6 Ra7 25.Bd3 Ba6 (25...Qe7+-) 26.Ba6 Rc8 (26...Rfa8 27.Bd3 Ra5 28.Ra5 Ra5 29.Rb4 Ra8+-) 27.Bc8 1–0. marre – oppo, internet, 2010.

6.Be2 c6 7.a4 (7.Ne5 Bd6=) 7...Bd7 (7...Bd6 8.0-0=) 8.Ne5 a6 (8...Bd6 9.0-0=) 9.ba6+= ba6 10.Bh5 Nh5 11.Qh5 g6?? (better 11...Qe7=) 12.Qf3+- Qe7 (12...f6 13.Ng4 Bg7 14.Nf6 Ke7 15.Nd5 ed5 16.Bg7 Bf5 17.Bh8 Qh8+-) 13.Ba3 (13.Ba3 Bg7 14.Be7 Be5 15.d4 Bd4 16.ed4 Ke7 17.Qa3 Kf6 18.Qd6+-) 1–0. DEFFM – iueoiueo, freechess.org, 2018.

6.Be2 Bd6 7.0-0 0-0 8.a4 Qe7 (8...a6 9.Ne5=) 9.d4 c6 10.Bc3 (10.Ba3 c5=) 10...Qc7 11.Nbd2 (11.Qe1 Nc4 12.Bc4 dc4 13.e4=) 11...Nc4 (11...cb5 12.Ba5 Qa5 13.ab5=) 12.Nc4 (12.Bc4 cb5 13.ab5 dc4+=) 12...dc4= 13.bc6 (13.Bc4? cb5 14.Bd3 Qc3 15.ab5 a5–+) 13...Qc6 14.Nd2 (better is 14.Ne5!? Qc7 15.f4+=) 14...Nd5=+ 15.Nb1 b6 (15...Qc7 16.h3-/+) 16.e4 Nf4 (16...Nc3 17.Nc3 Bb7 18.Bf3=+) 17.Bf3= Be7 18.e5 Nd5 19.Qe1 (19.a5 ba5 20.Be4 f5 21.ef6 Bf6 22.Ba5 Rf7+=) 19...a5 (19...Bb7 20.Bd2=) 20.Bd2 Ba6 21.c3 Rab8 22.Qe4 Rfc8 23.Qg4+= b5 24.ab5 Bb5 25.h4 Ba4 26.Bh6 Bf8= 27.Bg5 Bc2 28.Nd2 Qd7 29.Be4 Bd3 30.Bd3= cd3 31.c4 Nc3 32.Rfc1? Qd4 33.Qd4= Ne2 34.Kh1 Nd4-/+ 35.Ra5 Bb4 36.Ra4 Bd2 37.Bd2=+ Nb3 38.Rd1= Nd2 39.Rb1?? (better is 39.Rd2 Rb3 40.Ra7=). Cerritelli,Gianluca – Negri,Jacopo, ITA op1 Italy, 1996.

6.Be2 Bd6 7.a4 c6 8.0-0 0-0 9.Ne5 cb5 (9...Nd7 10.f4=) 10.ab5 Qb6 (10...Nd7!? 11.f4 f6=) 11.Bc3+- Be5 12.Be5 (worse 12.Ba5 Qd6 13.Ra4 Qd7=) 12...Nd7 13.Bc3 Nc4 14.Bc4 dc4 15.Na3 Nc5 (15...e5 16.Qe2+-) 16.Bd4 (worse 16.Nc4 Qb5 17.d3 Qc6+=) 16...Bd7 (16...Rd8 17.Qb1 Bd7 18.Qb4+-) 17.Qh5+- f6? (17...f5 18.Qh4 A) 18...Bb5?? 19.Rfb1 Qd8 20.Qd8 Rfd8 21.Rb5+- (21.Bc5?! Ba6+-); B) 18...Rac8 19.Nc4 Qc7+-) 18.Bc5 (worse 18.Qc5 Qc5 19.Bc5 Rfc8+-) 18...g6 19.Bb6 (19.Nc4?! A) 19...gh5?? 20.Nb6 (20.Bb6?! Bb5 21.Ba7 Bc4+-) 20...ab6 21.Bf8 Rf8 22.c4+-; B) 19...Qb5 20.Na3 Qf1 (worse 20...gh5 21.Nb5 Rfc8 22.Na7 Rc5 23.Ra2+-) 21.Kf1 gh5 22.Bf8 Kf8+=) 19...gh5 20.Bd4 Rfc8 (20...e5 21.Bc3+-) 21.Bf6 Rc5 (21...Kf7 22.Bd4+-) 22.Bd4 Rd5 (22...Rcc8 23.Rfb1+-) 23.Nc4 Bb5 24.Nb6! Rad8 (24...ab6 25.Ra8 Double attack (25.Ra8 Pinning; 25.Ra8 Deflection; 25.Ra8 Decoy)) 25.Nd5 Bf1 (25...ed5 26.d3 a6 27.f4+-) 26.Nf6 Kf8 (26...Kf7 27.Kf1 a6 28.Ne4+-) 27.Kf1 a6 (27...Kf7 28.Ra7 Rd4 29.Rb7 Kf6 30.ed4+-) 28.Nh7 Kf7 29.Ng5 Kg6 1–0. GuestFJPK – GuestFJZD, freechess.org, 2019.

6.Be2 Bd7 7.Ne5 Bd6 8.Nd7 Qd7 9.Bf6 gf6 10.0-0 Ke7 (10...h5 11.d4=+) 11.a4 c5 12.d4 (12.f4 Rag8=) 12...c4 (12...Rac8 13.g3=+) 13.f3 Bc7 14.e4? (better 14.Nc3!?=) 14...Qd6-/+ 15.g3 Rhg8 16.Rf2 Rg5?? (better 16...de4!? 17.fe4 Bb6–+) 17.Rg2?? (17.Nc3!? Rg7 18.ed5+-) 17...Rag8 (better 17...Bb6 18.Kh1 de4=+) 18.g4?? (better 18.Nc3 Qb6 19.Kh1 de4 20.Ne4= (worse 20.fe4 Rd8-/+)) 18...Bb6 (18...de4 19.Nc3 ef3 20.Bf3–+) 19.c3 Nb3 20.Ra2 Qf4 21.Kh1 Kd6 (better 21...de4!? 22.fe4 Nc1–+) 22.Nd2 Nd2 23.Qd2 Kd7?? (better 23...Qd2 24.Rd2 R5g6=) 24.Qf4+- e5 25.Qf6 Bc7 26.Qf7 Kc8 27.Qd5 (27.a5 Kb8 28.de5 h6+-) 27...ed4 28.cd4 (better 28.Qd4 Kb8 29.Bc4+-) 28...Rd5 29.ed5 c3 30.Bc4 (better 30.a5 Re8 31.b6+-) 30...b6 (30...Bb6 31.Rae2+-) 31.Rac2 (better 31.d6 Rg7 32.dc7 Rc7+-) 31...Bf4 32.Rc3 Kd7 33.d6! Kd6 (33...Kd6 34.Bg8 Discovered attack; 33...Bd6 34.Bg8 Discovered attack) 34.Bg8 (34.Bg8 Bg5 35.Rc6 Ke7 36.Re2 Be3 37.Re3 Kf8 38.Rc7 h6 39.Bd5 h5 40.Rf7 Kg8 41.Re8) 1–0. Atotheking (1745) – Sambog (1745), lichess.org, 2020.

6.Be2 Be7 7.0-0 0-0 8.Ne5 c6 (8...a6 9.a4=) 9.a4 cb5 (9...Nd7 10.f4=) 10.ab5+= b6 (10...a6 11.ba6 ba6 12.Bc3=) 11.f4 (11.Ra5 ba5 12.Nc6 Qc7 13.Ne7 Qe7=) 11...Ne4= 12.d3 (12.Bd4 f6 13.Nf3 Qc7=) 12...Nc5 (12...Nd6 13.Na3=) 13.d4 (13.Nd2 f6 14.Nef3 a6=) 13...Ne4 14.Nd2 (14.Bd3 Qc7=) 14...Nd2 15.Qd2 Nb7 (better 15...f6!? 16.Ra5 ba5=) 16.Nc6+- Qe8 17.c4 Bd7? (better 17...Nd6+-) 18.Ne7+- (18.Ra7?! Ra7 19.Na7 dc4 20.Bc4 Na5+=; 18.Na7?! Na5 19.Nc6 Bc6 20.bc6 Qc6 (worse 20...Nc6 21.cd5 ed5 22.Bb5+=) 21.cd5 ed5=) 18...Qe7 19.Ba3 Qf6 (19...Qd8 20.c5 Na5 21.c6+-) 20.Bf8 Kf8 21.Bf3 Rb8 (21...Nd6 22.cd5 Bb5 23.Rfb1+-) 22.cd5 (22.Ra7 Qe7 23.Qc2 Kg8 24.cd5 Rc8+-) 22...ed5 23.Ra7 Bb5 (23...Qd6 24.Qc2 g6 25.Qb3+-) 24.Qb4 Nd6 25.Bd5 Bf1 (25...Kg8 26.Rfa1 Re8+-) 26.Rf7 Ke8 (26...Qf7 27.Qd6 Qe7 28.Qb8 Qe8 29.Qe8 Ke8 30.Kf1 Ke7+-) 27.Rf6 gf6 28.Qd6 Rd8 29.Qe6 (29.Kf1?! Rd6 30.Bc4 Ke7+=) 29...Kf8 30.Qf7 1–0. GuestYMLD – GuestZWQL, freechess.org, 2020.

6.Bf6 Qf6=+ 7.d4 c5 8.Nc3 (8.Qd2 b6=) 8...cd4=+ 9.ed4 Bb4 10.Qd2 Qh6 (10...0-0 11.Rb1 Bd6 12.Bd3=) 11.Rb1 (11.Qh6 Bc3 12.Qd2 Bd2 13.Kd2 Bd7=) 11...Qd2 12.Kd2 Bd6 13.Bd3 Bd7 (13...0-0 14.Rhe1=) 14.Ne5 Be5 (14...f6!? 15.Nd7 Kd7=) 15.de5+= 0-0 16.Rhd1 (16.Rb4 Rfc8+=) 16...f6= 17.ef6 Rf6 18.f3 Rh6 (18...Rf4 19.h3=) 19.h3 (19.Rh1 Rh4+=) 19...Rh5 (19...Rh4!?=) 20.Rb4+- b6 21.Rdb1 (21.f4 Rh4 22.a3 Rc8+-) 21...Nb7 22.h4 Rc8 23.g3 Nd6 24.R1b2 (24.f4 Nc4 25.Bc4 Rc4 26.Rc4 dc4+-) 24...Be8 25.f4 (25.Ra4 Rc7+=) 25...Nf7 (25...Nc4 26.Bc4 dc4 27.Ne2=) 26.R2b3 Rd8 (26...Nd6 27.Rb1+=) 27.Ra3+- Rd7 (27...Ra8 28.f5 Bd7 29.fe6 Be6 30.Rba4+-) 28.Rba4+- d4 29.Ne2 Rc5 (29...Rd6 30.Rb4+-) 30.Ra7 Rd6 31.Re7 Kf8 32.Raa7 g6 (32...e5 33.a4 h6 34.h5+-) 33.a4 Rc8 (33...e5 34.Be4 ef4 35.gf4+-) 34.Reb7 (34.Be4 Rcd8 35.Bc6 d3+-) 34...e5 35.Ra6 e4 (35...ef4 36.gf4 (36.Rbb6?! Rb6 37.Rb6 fg3+-; 36.Rab6?! Rb6 37.Rb6 fg3+-) 36...Rcd8 37.Rab6 Rb6 38.Rb6+-) 36.Be4 Re6 (36...Rc4 37.Bd3 Rb4 38.a5+-) 37.Bd3 Re3 (37...Rd8 38.a5+-) 38.Rbb6 Kg7 (38...Rf3 39.Ra7+-) 39.Bg6! hg6 40.Rg6 Kh8 41.Nd4 Re4 (41...Ra3 42.Rge6+-) 42.c3 Rd8 43.Rge6 (better 43.Kd3 Re1+-) 43...Red4 (43...Re6 44.Re6 Nd6 45.Kc2+-) 44.cd4 Rd4 45.Ke3 Rd8 46.f5 Kg7 47.g4 Rc8 (47...Kg8 48.b6 Rb8 49.Ra7+-) 48.f6 Kf8 49.g5 Rc3 (49...Nd8 50.Re7+-) 50.Kd2 Rc8 51.g6 Nh6 52.h5 Bd7 53.Re7 Bh3 54.a5 Bf5 55.Rd6 Bg6 56.hg6 Ng4 57.Rh7 Nf6 58.Rf6 Kg8 59.Rd7 Rb8 60.b6 Ra8 (60...Rc8 61.g7 Rb8 62.Rh6 Rb6 63.Rh8) 61.b7 Rd8 62.Rd8 Kg7 63.b8Q Kf6 64.Qf4 Kg6 (64...Kg7 65.Rg8! Kg8 66.Qf7 Kh8 67.Qf8) 65.Rg8 Kh7 66.Qf7 Kh6 67.Qg6 1–0. Bestia02c – Holmes02, computer chess game, 2000.

5.a4 e6 6.Bc3 b6 (6...c5 7.bc6 Nc6 8.Nf3=) 7.Ba5 (7.Nf3 c5+=) 7...ba5= 8.c4 dc4 (8...Qf6 9.d4=) 9.Bc4 Nf6 10.h3 (10.Nf3 Bd6+=) 10...Bc5 11.Ne2 0-0 12.Ng3 (12.0-0 a6=) 12...Bg6 13.0-0 h5 (13...a6!?=) 14.d4+= Bd6 15.f4 (15.Nc3+=) 15...Ne4? (better 15...h4!? 16.Ne2 a6+=) 16.Ne4+/- Be4 17.Nd2 (17.Qh5 c5 18.bc6 Bc6+-) 17...Bf5 (17...Bg6 18.Be2+/-) 18.e4 (18.Qh5 a6+-) 18...Bh3? (better 18...Bb4 19.ef5 Qd4 20.Rf2 Bc5+=) 19.Qh5 Bg2? (19...Bf4 20.Nb3 Be3 21.Kh1 a6 22.Qh3 ab5 23.ab5 Bd4+-) 20.Kg2 Bb4 (20...Qf6 21.e5 g6+-) 21.Rh1 (21.Rh1 Qg5 22.fg5 f5 23.Be6 Rf7 24.Qf7) 1-0. mitkosto - swalter (1615), Rated Classical game, lichess.org, 2013.

5.Bc3 Nc4 6.Bc4 dc4 7.Nf3 (7.Qf3 Qc8=) 7...Qd7 (7...Qd5 8.Be5=) 8.a4 (8.Na3 Nf6=) 8...e6 (8...Nf6 9.Na3=) 9.0-0 Bd6?? (better is 9...a6 10.Ne5 Qd5=) 10.Bg7+- Nf6 (10...a6 11.Bh8 ab5 12.ab5 Ra1 13.Ba1 Qb5 14.Nd4+-) 11.Bh8 Ne4 (11...Nd5 12.Ne5 Qe7 13.Nc4 Bh2 14.Kh2 Qh4 15.Kg1 Qc4 16.d3+-) 12.Be5 (12.Nh4 Bg6+-) 12...Bc5 (12...0-0-0 13.Bd6 Qd6 14.Nd4+-) 13.Nc3 (13.Nh4 Bg6+-) 13...Nd6 (13...0-0-0 14.Ne4 Be4 15.Qe2+-) 14.Bd6 Bd6 15.e4 Bg4 16.h3 Bh5 17.g4 Bg6 18.d3 c6 19.dc4 cb5 20.Nb5 Bf4 21.Qd7 Kd7 22.Rad1 Kc6 23.Rfe1 a6 24.Nbd4 Kc7 25.Nh4 Be5 26.Ng6 hg6 27.Nf3 Bc3 28.Re3 Bb4 29.Red3 Bc5 30.Ne5 Rf8 31.Rd7 Kb6 32.Rf7 Rc8 33.Ng6 Rg8 34.Ne5 Rc8 35.Rdd7 Ka5 36.Rb7 Bb6 37.Nd7 Rd8 38.c5 Bc5 39.Nc5 Rd1 40.Kg2 Rb1 41.Rb1 e5 42.Re7 (42.Nd3 Ka4 43.Rfb7 a5 44.Ra1) +-. bby – loka, Live Game Caissa's Web, 2004.

5.d3 a6 6.ba6 Ra6 7.Nd2 =.

5.d3 b6 6.Be2 (6.Qf3 e6=) 6...c6 (6...a6 7.a4=) 7.bc6 (7.a4 Bd7=) 7...Nc6 8.d4 (8.Nf3 Qd6=) 8...Nf6 (8...e6 9.Nf3+=) 9.Bb5 (9.Nf3 Rc8 10.Nh4 Bd7=) 9...Qd6 (9...Qc8 10.c4+=) 10.c3 (10.Ba3 Qe6=) 10...a6+= 11.Qa4 Bd7 12.Nf3 g6 (12...Qc7 13.0-0+=) 13.0-0 Bh6 (13...Bg7 14.Rc1+=) 14.Ba3 (14.Ba6? Nb8 15.Qb4 Qb4 16.cb4 Na6–+) 14...Qc7 (14...Qe6 15.c4=) 15.Nbd2 (15.Be2 0-0+=) 15...0-0 16.Bc6 (16.Be2 Rfc8+=) 16...Bc6+= 17.Qb4 Rfe8 18.Rab1 (18.Ne5 b5+=) 18...b5 19.Ne5 Bf8 (19...Bg7 20.Qb3+=) 20.Nc6 (20.Qb3 Bg7+=) 20...e6 (20...Qc6 21.Qb2+=) 21.Qb3= Qc6 22.Bf8 Kf8 (22...Rf8 23.Rfc1=) 23.Qa3 (23.a4 Reb8=) 23...Kg7 24.Qa5 (24.Rb3 Rec8=) 24...Rec8+= Exerts pressure on the backward pawn 25.Rfc1 Qd6 26.Nb3 (26.Rb4 Ng4 27.g3 e5=) 26...Rc4 (26...Ne4 27.f3 Rc4 28.fe4=) 27.Nc5 Ne4 (27...Nd7!? 28.Nd7 Ra4+=) 28.Ne4+= de4 Black threatens Ra4 29.Rb5 ab5 A pinning theme 30.Qa8 b4 (30...Qd5 31.Qd5 ed5 32.Rb1+=) 31.Qe4 Rc3 Do you see the mate threat? 32.Rd1 (32.Rb1 Qc7 33.f4 Ra3 34.Qe5 Qe5 35.fe5 Ra2 36.Rb4 g5+/-) 32...Ra3 (32...Qc7 33.d5 Qd6 34.Qd4 e5 35.Qd2+=) 33.Qb1+/- Qb6 (33...Ra5 34.Rc1+/-) 34.Qb2 Kg8 (34...f6 35.d5+/-) 35.g3 (35.Rb1 Qa5 36.Qb4 Qb4 37.Rb4 Ra2+/-) 35...Qa5+= 36.e4 (better is 36.Rb1!?+=) 36...Ra2+= 37.Qb3 White plans d5 (37.Qb1 Qa3 38.Kg2 Re2=) 37...Qa3 38.Rb1 Exerts pressure on the isolated pawn (38.Qa3 ba3 39.d5 ed5 40.ed5 Kf8+=) 38...Ra1-/+ 39.Qd1?? (better is 39.Kg2 Rb1 40.Qb1-/+) 39...Rb1–+ 40.Qb1 b3 41.d5 b2 42.d6 (42.de6 Qa1 43.ef7 Kf7 44.Qa1 ba1Q (44...ba1N?! 45.f4-/+; 44...ba1B?! 45.f4-/+) 45.Kg2 Qe1–+) 42...Qa1 (42...Qd6?! 43.Qb2 e5 44.h3=) 43.Qa1 ba1Q (43...ba1N?? 44.d7+-) 44.Kg2 Qe5 (44...Qd1 45.d7–+) 45.d7 (45.f3 Qd6 46.g4 Qd2 47.Kg3 Qe1 48.Kg2 f5 49.ef5 ef5 50.gf5 gf5–+) 45...Qe4 (45...Qe4 46.Kg1 Qd4–+) 0–1. tschulz – reisinger, mySchach.de, 2005.

5.d3 c6 6.g4 (6.a4 Nf6=) 6...Bd7+= 7.Bg2 e6 8.bc6 Nc6 9.Nf3 (9.Nd2 Rc8 10.a3 Nh6=) 9...f6 (9...Qb6 10.Bc3+=) 10.Nfd2 (10.Nbd2 Rc8+=) 10...Bd6 (10...Rc8 11.0-0+=) 11.g5 (11.c4 Qb6 12.Bc3 Ne5 13.Be5 Be5=) 11...Be5 (11...Rc8 12.c4 Nb4 13.Qb3=) 12.Be5= Ne5 (12...fe5 13.Qh5 g6 14.Qg4=) 13.f4 (13.d4 Ng6=) 13...Nf7 (13...Ng6 14.h4=) 14.h4 Qc7 (14...Ne7 15.c4=) 15.0-0 (15.c4 dc4 16.Nc4 Rc8=) 15...0-0-0 (15...Ne7 16.c4+=) 16.a4 (16.c4 Ne7 17.Qb3 Bc6=) 16...g6 (16...Ne7!?+=) 17.c4= Bc6 18.Qb3 (18.cd5 Bd5 19.Bd5 ed5+=) 18...h6 (18...d4 19.c5 Bg2 20.Kg2=) 19.Na3 (19.cd5!? ed5 20.gf6 Nf6 21.Nc3=) 19...hg5+= 20.Nb5 (20.hg5 d4 21.ed4 Rd4 22.Nb5 Bb5 23.cb5=) 20...Qb8 (better is 20...Qa5 21.Qc2 gh4–+) 21.cd5= ed5 (worse is 21...Bd5 22.Rac1 Kd7 23.Bd5 ed5 24.Qd5 Ke8 25.Qe4 Kf8 26.Rc7 gh4 27.Rfc1+/-) 22.Rac1 Ne7 (better is 22...gf4!? 23.Rf4 Ne7 24.Rf6 Nh6+=) 23.e4+/- Rh4 24.ed5 Nd5 25.Bd5 Rg4 26.Kf2 Qf4 27.Ke1 Qe3 28.Kd1 Ne5 29.Be6 Kb8+/- 30.Bg4 Ng4 31.Rc6 Qd3?? 32.Qd3+- Rd3 33.Rcf6 (33.Rcf6 Nf6 34.Rf6+-; 33.Re6 Rd8 34.Ke2 a6+-) 1–0. Martois,Karl Erik – Sillanpaa,Yrjo, corr FIN–ch I, 1972.

5.d3 Qd7 6.Na3 e5 (6...a6 7.Nf3 ab5 8.Qd2=+) 7.Qd2= b6 (7...Ba3 8.Ba3 Qb5 9.Qc3=) 8.Nf3 f6 9.Be2 c6 (9...Bd6 10.0-0=) 10.bc6 (10.d4 e4 11.Nh4 Be6=) 10...Nc6 11.Nh4 g6 Black plans d4 (11...Bb4!? 12.c3 Ba3 13.Ba3 Bg4+=) 12.Nf5+- Qf5 13.0-0 (13.Nb5 Qd7 14.0-0+-) 13...d4 (13...Ba3!? 14.Ba3 Nge7+-) 14.Bf3 (14.c3 Ba3 15.Ba3 Nge7+-) 14...Rc8 15.Nb5?? (15.Nc4 de3 16.fe3 Qe6+-) 15...de3?? (better 15...e4 16.Nd4 Nd4 17.Be4 Qa5=) 16.fe3 (16.Qe3 Kf7+-) 16...Qd7 (16...e4 17.Nd4 Nd4 18.Bd1 Nf3 19.gf3 ed3 20.cd3+-) 17.c4 (17.Rad1!? a6 18.Nc3 Bb4+-) 17...Nge7+- 18.Rad1 Rd8 (better 18...Bh6!?+-) 19.d4+- Qb7? (19...Bg7 20.Qf2 ed4 21.Bd4 Nd4 22.Rd4 Qc8 23.Nd6 Rd6 24.Rd6 0-0+-) 20.d5 Bh6 (20...Qc8 21.Qc3 a6 22.dc6 Nc6 23.Rd8 Nd8 24.Na3+-) 21.Qf2 (better 21.dc6 Rd2 22.cb7 Be3 23.Kh1 Kf7 24.Be5 fe5 25.Bd5 Kg7 26.Rf7 Kh6 27.Rd2 Bd2 28.Re7 Rf8+-) 21...Nb4 (21...Na5 22.d6 Nf5 23.Nc7 (worse 23.Bb7 Be3 24.Bd5 Bf2 25.Rf2 Kd7+-) 23...Kd7 24.Rfe1+- (worse 24.Bb7 Be3 25.Bd5 Bf2 26.Rf2 Rdf8+-)) 22.d6 Nf5 23.Bb7 Be3 24.d7! Rd7 25.Qe3! Ne3 (25...Ne3 26.Rd7 Kd7 27.Rf6 Nc4+-) 0–1. GuestTLPF – GuestXJZJ, freechess.org, 2019.

5.d3 e6 6.Nf3 Bb4 7.Nbd2 Bg4?? (7...Nf6 8.Rb1 Qe7 9.Be2=) 8.h3 (8.Bg7 a6+-) 8...Bh5?? (8...Bf3 9.Qf3 Nf6 10.Be2=) 9.Be2 (better 9.Bg7 Qd7 10.Rb1 Bf3 11.Qf3 Bd2 12.Kd2+-) 9...Nf6= 10.0-0 (10.Rb1 Bd6=) 10...h6 (10...a6 11.Rb1 Bd6 12.e4+=) 11.c4 (11.Rb1 Qe7 12.c3+=) 11...g5 (11...dc4!? 12.dc4 0-0+=) 12.cd5 (12.Rb1 Bd6+-) 12...ed5 13.a3 Bc5 (13...Be7 14.Bc3 c5 15.Qa4+-) 14.Nd4 (14.Qa4 b6+-) 14...g4 (14...Be2!? 15.Qe2 a6+-) 15.hg4 (15.Bc3 Bd4 16.ed4 b6+-) 15...Bg6 16.Qb3?? (better 16.Qa4 b6 17.N2b3 Bd4 18.Bd4 (18.ed4?! Nb3 19.Qb3 a6+-; 18.Qd4?! Nb3 19.Qe5 Kd7+-) 18...Nb3 19.Qb3+-) 16…Nb3–+ (16...Nb3 17.N2b3 Be7–+) 0–1. GuestWBVC – GuestPKXN, freechess.org, 2016.

5.Qf3 Bc2 6.d3 c6 7.Nc3 =.

5.Qf3 e6 6.Bd3 (6.d3 Nf6=+) 6...Bd3 7.cd3 Qd7 (7...c6 8.a4=+) 8.a4 (8.Qg4 Qb5 9.Bg7 Nh6=+) 8...Nb3 (8...a6 9.Qg3 f6 10.Nc3-/+) 9.Ra2 (9.Ra3 Nc5=+) 9...c6 (9...a6 10.ba6 Ra6 11.Nc3-/+) 10.Ne2 (10.bc6 Qc6 11.Qd1 Nc5-/+) 10...cb5-/+ 11.a5 f6 (11...Rc8 12.0-0-/+) 12.0-0 Bd6 13.g3 Qc7 14.Ba3 Ne7 15.Nd4?? 0-0-0?? 16.Nb5+- Qa5 17.Rc2 Kb8 18.Nd6 Nc6 19.Nf7 Ne5 20.Ne5 fe5 21.Qh5 d4 22.Qe5 Qe5–+ 23.e4 g5 24.f3 h5 25.Be7 Rdg8 26.Na3 g4 27.Nb5 h4 28.Bd6-/+ Qd6 29.Nd6 hg3 30.hg3 Rg7 31.f4 Rgh7-/+ 32.Kf2 (32...Rc7 33.Rc7 Kc7 34.Nf7 Rh2 35.Kg1 Rd2 36.Ne5-/+). manofsteel5 – Tolosa32, Live Game Caissa's Web, 2005.

5.Nf3 Nc4 6.Bc4 dc4 7.0-0 e6 (7...Nf6 8.Na3+-) 8.Nd4+- Be4 (8...Nf6 9.Qe2+-) 9.Nc3 Bd5? (better 9...Nf6+-) 10.e4+- Be4? (10...Qf6 11.b6 Qd4 12.Nd5 Qb2 13.Nc7 Kd7 14.Na8 a6+-) 11.Ne4 Nf6 12.Qf3 (12.Nf6!? gf6 13.Qg4 h5+-) 12...Ne4 13.Qe4 Qd5 14.Qd5 (14.Rfe1 Qe4 15.Re4 a6+-) 14...ed5 15.Rfe1 Be7 (15...Kd7+-) 16.Nf5 (16.Nf5 0-0-0 17.Ne7 Kb8 18.Bg7+-) 1–0. GuestTKZT – fakf, freechess.org, 2020.

5.Nf3 Nc4 6.Bc4 dc4 7.Nd4 Bg6 8.Qe2 c5 (8...Qd5 9.f4=) 9.Nf3 (better 9.bc6!? Qb6 10.cb7+-) 9...Bc2= 10.Qc4 Bg6 (10...Bd3 11.Qc5 e6 12.Qe5=) 11.Qc5+= Rc8 (11...e6 12.Qd4+=) 12.Qd4 (better 12.Qa7!? Rc2 13.Ba3+-) 12...Qd4= 13.Nd4 Bd3 14.Nc3 e5 15.Nf3 e4 (15...f6 16.Rc1=) 16.Ne5+- f6 17.Nd3 ed3 18.0-0 Bb4 19.a3 Bc3 20.Bc3 Ne7 21.Bb4 Nd5 22.Bd6 (22.Rfc1 Kd7+=) 22...Rd8 (22...Kd7 23.Bg3 Rc2 24.Rfc1=) 23.Bb4 Nb4 (better 23...Rc8=) 24.ab4+- 0-0 25.Ra7 Rc8 26.Rb7 Rc2 27.Rd1 Rfc8 28.f3 Rc1 (28...Rb2 29.b6 h5 30.e4+-) 29.Rc1 Rc1 30.Kf2 Rd1 (30...Rc2 31.b6 Rc6 32.e4+-) 31.Rd7 (better 31.b6!? Rd2 32.Ke1 Rg2 33.Rb8 Kf7+-) 31...Rd2 32.Kg3 (better 32.Ke1 Re2 33.Kd1 Rg2 34.b6+-) 32...h5 (32...Rb2 33.Rd3 Rb4 34.Rd8 Kf7 35.Rd7 Kg6+-) 33.b6 g5 (33...Rb2 34.Rd4 d2+-) 34.b7 h4 35.Kh3 g4 36.fg4 (36.fg4 Rc2 37.b8Q Rc8 38.Qc8; 36.Kh4 Rc2 37.b8Q Rc8 38.Qc8) 1–0. GuestRVLP – GuestGZFG, freechess.org, 2017.

5.Nf3 c6 6.a4 f6 7.Nd4 Qd7 (7...Bd7 8.f4=) 8.Be2 (8.Nf5 Qf5 9.Bd3 Qd7+/-) 8...e5+= 9.Nf5 Qf5 10.Bc3 Nc4 11.d3 Nd6 12.Bg4 Qg5 13.0-0 h5 (13...Nh6 14.Be6=) 14.Bh3 Qh6 15.bc6 bc6 16.Nd2 g5 17.f3 (17.Be6 Ke7 18.Bg8 Rg8+=) 17...g4 18.fg4 Qe3 19.Kh1 hg4? (better 19...Qh6+=) 20.Qg4+- (20.Qg4 Be7 21.Qd7 Kf8 22.Qc6+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 f6 6.d4 (6.Nd4 Nh6+=) 6...c6 (6...e6 7.Be2=) 7.Nh4+= Nc4?? (better is 7...Nh6+=) 8.Bc4+- (8.Nf5?! Nb2 9.Qc1 Qa5 10.Nd2 Na4 11.bc6 bc6+=) 8...dc4 9.Nf5 cb5 10.0-0 (10.d5 g6 11.Ng3 b4+-) 10...e6 11.Ng3 Bd6 (11...Qd7 12.Nd2+-) 12.Qh5 g6 (12...Ke7 13.Qb5 Qb6 14.Qb6 ab6 15.Ne4+-) 13.Qb5 Qd7 14.Qd7 (better is 14.Ne4!? Bh2 (14...Qb5?? 15.Nd6 Kd7 16.Nb5+-) 15.Kh2 Qb5 16.Nd6 Kd7 17.Nb5 a6+-) 14...Kd7 15.Ba3 (15.Ne4 Rd8+-) 15...Rc8 (15...Bg3 16.fg3 f5 17.Nd2+-) 16.Bd6 Kd6 17.Nc3 a6 18.Rfb1 Rb8 19.Rb6 Ke7 20.Rab1 e5 21.Rb7 Rb7 22.Rb7 Kf8 23.Nge4 h5 24.Nd5 Nh6 25.Nc5 Nf7 26.Ne6 Ke8 27.Nf6# 1–0. Woschkat,Karl_Heinz – Strong,William, Telecomm, 1995.

5.Nf3 Nf6 6.Be2 Nc4 7.Bc4 dc4 8.Na3 Qd5 9.Qe2 Be4 10.Nc4 Bc2 11.Nce5 (11.d4 Be4=) 11...Ba4+= 12.0-0 Bb5 13.d3 0-0-0 14.Rfc1 (better is 14.Bd4=) 14...Bd3-/+ 15.Qe1 Bg6 (15...Be4 16.Qc3 c6 17.a3-/+) 16.Rd1 (16.Ng5 Ne4 17.Ne4 Be4 18.f3-/+) 16...Qe6 17.Rd8 Kd8 18.Ng5 Qb6 19.Bd4 c5 20.Ng6 (worse is 20.Nef7 Bf7 21.Bc5 Qc5 22.Nf7 Ke8 23.Nh8 Qf5+-; worse is 20.Ngf7 Bf7 21.Nf7 Ke8 22.Bc5 Qc5 23.Nh8 Ne4+-) 20...Ke8?? (better is 20...fg6 21.Rb1 Qc6 22.Nf7 Ke8 23.Nh8 cd4 24.ed4 e6+-) 21.Nh8 cd4 22.Qc1 e5 23.Qc8 Ke7 24.Nhf7 de3 25.fe3 h6 26.Qd8 Qd8 27.Nd8 hg5 28.Nb7+- g4 29.Na5 Ke6 30.Nb3 Bd6 31.Rc1 Kd5 32.Nd2 Bc5 33.Kf2 Bb4 34.Ke2 g6 35.e4 Kd6 36.Nc4 Ke6 37.Kd3 Nd7 38.Rc2 Be7 39.Nd2 Nc5 40.Kc4 Kd6 41.Rc3 Bg5+/- 42.Rc2 Be7+- 43.Kb5 a6 44.Kb6 Bd8 45.Ka7 Kc6 46.Nb3 Bb6 47.Ka8 Kb5 48.Nc5 Bc5 49.Kb7 Bd4 50.Kc7 Kb4 51.Kd7 a5 52.Kc7 (52.Kc7 a4 53.Kd6+-; 52.Ke6 g3 53.h3 a4+-) 1–0. Plock,Joerg – Hentschke,B, corr, 1990.

5.Nf3 Nf6 6.Be2 Qd7 7.Ne5 Qd6 8.0-0 e6 9.d4 Be7 (9...Qb4 10.Ba3 Qa4 11.Bf8 Rf8 12.Bd3+=) 10.c4 (10.Ba3 Qd8 11.Be7 Qe7 12.c3+=) 10...dc4 (better is 10...Nc4!? 11.Nc4 dc4=) 11.Bc3+/- (11.Nc4?! Nc4 12.Bc4 c5=; 11.Bc4?! Nc4 12.Nc4 Qd7=) 11...b6 12.Ba5 ba5 13.Nc4 (13.Bc4?! 0-0+=) 13...Qd5 14.Nc3 Qd7 15.Ne5 (15.Na5?! Bb4 16.Bf3 0-0 (16...Bc3? 17.Ba8 0-0 18.Bc6+-; 16...Ba5? 17.Ba8 0-0 18.Bc6+-) 17.Ba8 Ra8=) 15...Qd8 (15...Qd6+-) 16.Bf3 Nd5 17.Qb3 f6 (17...Nc3 18.Qc3 Rc8 19.Bc6 Kf8 20.e4+-) 18.Nd5 (better is 18.Nc6 Qd6 19.e4 Nc3 20.ef5 Nd5 21.Bd5 a4+-) 18...ed5 19.Nc6 Qd6 (19...a4 20.Qd5 Qd5 21.Bd5+-) 20.Bd5 Rc8 (20...a4 21.Qc4 Bd3 22.Qd3 Qd5 23.Ne7 Ke7 24.Rfc1+-) 21.Bf7 (21.Na7 Rd8 22.e4 Bg6+-) 21...Kf8 22.Rac1 Bd7 (22...a4 23.Qc4+-) 23.Na7 (< 23.Ne7 Ke7 24.Bc4 c6 25.bc6 Bc6+-) 23...Rd8 (23...Ra8 24.Nc6+-) 24.Nc6 (better is 24.a4 Rb8 25.Qa2 g6+-) 24...Bc6 (24...a4 25.Qc4 Bc6 26.bc6 g6+-) 25.Rc6 (25.bc6?! Qb4+-) 25...Qd7 (25...Qb4 26.Rc7 Qd6 27.Rfc1+-) 26.Be6 (26.Be6 Qe8 27.Rc7+-) 1–0. Wall,Bill – Vegas, internet, 2003.

5.Nf3 Nf6 6.Ne5 =.

5.Nf3 h6 6.Be2 e6 7.0-0 f6 (7...Nf6 8.Nd4=) 8.Nh4 (8.Nd4 Ne7+-) 8...g6 (8...Bh7!?+=) 9.g4+- g5 (9...Be4!? 10.f3 g5 11.fe4 gh4+-) 10.gf5+- gh4 11.fe6 Qd6 12.Bh5 (12.Bc3 Qb6 13.Bh5 Kd8+-) 12...Ke7?? (better 12...Kd8 13.Bc3 Nc4+-) 13.Ba3 (13.Ba3 Nc4 14.Bd6 Nd6 15.Nc3 Ke6 16.Qg4 f5 17.Qg6 Kd7 18.Nd5+-) 1–0. GuestFQTS – GuestB, freechess.org, 2018.

5.h3 e6 6.Nf3 h6 7.a4 Nf6 8.Be2 Ne4 (8...Bd6 9.0-0=) 9.0-0 Rg8 (9...Bb4 10.d3 (worse 10.Bg7 Rg8 11.Bd4 Bh3-+) 10...Nf6 11.Nbd2+=) 10.d3+= Ng5 11.Nbd2 (11.Bc3 b6+/-) 11...Bb4+= 12.e4 (12.Rb1 Nf3 13.Nf3 Qe7+/-) 12...de4= 13.de4 (better 13.Ng5 ed3 14.Bd3 Qg5 15.Nf3=+) 13...Bd2 (better 13...Ne4 14.Ne4 Be4=+) 14.ef5+/- (14.Nd2?! A) 14...Be4? 15.Bc3+- (15.Ne4?! Ne4 16.Qe1 Qd2+=); B) 14...Ne4 15.Ne4 Be4=) 14...Nf3 15.Bf3 Nc4 16.Ba3 Na3 17.Ra3 Qg5 (17...Bb4!? 18.Rd3 Qc8+-) 18.Bb7 Rd8 19.Bc6 Ke7 20.fe6 fe6 21.Rg3 (21.Qe2 Rgf8+-) 21...Qf4? (better 21...Qg3! 22.fg3 Be3 23.Kh2 Rd1 24.Rd1 Rd8+=) 22.Rg4 (22.Qe2 Qa4 23.Qe5 Qf4 24.Rg7 Rg7 25.Qg7 Qf7+-) 22...Qd6 23.Qa1 Kf7 24.c4 h5 (24...g6 25.Rg3 Qd4 26.Qa3+-) 25.Rg3 h4 26.Rf3 Ke7 27.Rd1 (better 27.Qb1!? Rgf8 28.Qh7 Rf3 29.Bf3+- (29.gf3?! Qd4+/-)) 27...Qe5?? (better 27...Bc3 28.Rd6 Ba1+/-) 28.Qe5 (28.Qe5 Bf4 29.Qc5 Rd6 30.Rd6 Bh2 31.Kh2 Rd8 32.Rd8 Kd8 33.Rf8) 1-0. holeviet (1870) - Besson_72, Rated Classical game, lichess.org, 2013.

6.a4 Nf6 7.Bc3 c6 (7...c5 8.bc6 Nc6 9.Bb5=) 8.Ne5 (8.Nd4 Bg6=) 8...Qc7 9.Ba5 Qa5 (9...Qe5!? 10.Bc3 Qc7=+) 10.bc6= Bd6?? (better 10...b6=) 11.cb7+- Rb8 12.Nc6 Qc5 (12...Qb6 13.Nb8 Bb8 14.Nc3 Qb7 15.Rb1+-) 13.Nb8 Bc2 (13...Bb8 14.Nc3 d4 15.ed4 Qd4 16.Bb5 Ke7+-) 14.Na6 Qb6 (14...Bd1 15.Nc5 Ke7 16.d4+-) 15.Qc2 Qb7 16.Bb5 Ke7 17.Qc6 (better 17.0-0+-) 17...Qc6 18.Bc6 Rc8 19.Nc3 (better 19.d4+-) 19...Rc6 20.Nb8 (20.Rb1 Ra6 21.Rb7 Nd7+-) 20...Bb8+- 21.Rb1 Be5 22.Rb7 Rc7 23.Rc7 Bc7 24.Nb5 Bb6 25.a5 Ba5 26.Na7 Ne4?? (better 26...Bc7+-) 27.Nc6 Kf6 28.Na5 g5 29.Ke2 h5 30.Rc1 Ke5 (30...Nd6 31.d4+-) 31.d3 (31.Nb7 Kf5+-) 31...Nf6 (31...Nd6 32.Nc6 Kf6 33.f3+-) 32.Rc7 Ng4 (32...Kf5 33.Rf7 e5 34.Re7+-) 33.Rf7 Nh2 (33...Kd6 34.h3 Nh2 35.Nb7 Kc6 36.Nd8 Kd6 37.Rh7+-) 34.f3 (34.Nb7 d4 35.f4 Kd5 36.e4 Kc6 37.Nd8 Kb5 38.Ne6 gf4 39.Nd4 Kc5 40.Ne6 Kb5 41.Rf5 Kc6 42.Rh5 Ng4 43.Nf4 Kd6+-) 34...h4 (34...Kd6 35.Nb7 Kc6 36.Nd8 Kd6 37.Rh7+-) 35.Kf2 d4 36.ed4 (better 36.Nc4!? Kd5+-) 36...Kd4 37.Kg1 Kd3 (37...Nf3 38.Rf3 Ke5 39.Re3 Kd5 40.Nc4+-) 38.Kh2 e5 (38...e5 39.Rd7 Kc3+-; 38...Ke3 39.Rf6 e5 40.Rf5+-). aravind555 – deliberatie, lichess.org, 2019.

6.Bc3 Nc4 7.Be2 Qd7 8.a4 Nf6 9.0-0 =.

6.Nd4 Bg6 7.d3 Nf6 8.c4 dc4 9.dc4 (9.Qa4 cd3 10.Qa5 c5 11.Qd8 Rd8+=) 9...Bc5 (9...e5 10.Nf3 Qd1 11.Kd1-/+) 10.Qf3 (10.Qa4 b6=) 10...Be4 (10...Bb1 11.Rb1 Bb4 12.Ke2 e5-/+ (12...Nc4?! 13.Qb7 0-0 14.Ba1=)) 11.Qg3= 0-0 12.Nd2 Bg6 (12...Bb4 13.0-0-0 Bg6=+) 13.a4 (better 13.Bc3!? c6 14.Rd1=) 13...Bb4-/+ 14.h4?? (better 14.Rd1-/+) 14...Ne4 (better 14...Bd2 15.Kd1-+) 15.Qg4 (15.Qe5 Bd2 16.Ke2-+) 15...Nd2 16.h5 (16.Ba3 Qe7 17.c5 Qc5 18.h5 Ndb3 19.Ke2 Bd3 20.Kf3 Nd2 21.Kg3 Nf1 22.Raf1 Ba3 23.Rd1-+) 16...Bf5 (better 16...Ndc4 17.Kd1 Bf5 18.Qh4 Nb2 19.Kc1-+) 17.Nf5 (17.Qg7! Kg7 18.Nf5 Kg8 19.Nh6) 17...Ndc4 (better 17...Ndb3 18.Ke2 Qd2 19.Kf3 Qb2 20.Ra2 ef5 21.Rb2 fg4 22.Kg4-+) 18.Ke2 Qd2 19.Kf3 Qd5 (19...Qb2 20.Nh6 Kh8 21.Bc4 Qf6 22.Ke2-+) 20.e4 (better 20.Kg3 Bd6 21.f4+-) 20...Nd2-+ 21.Kg3 (21.Kf4 Qe4 22.Kg3 Qg4 23.Kg4 ef5 24.Kf5-+) 21...Ne4 (better 21...Qb3 22.Kh2 Qb2-+) 22.Kh2+- g6 (22...Bd6 23.Kg1 Be5 24.Ne7 Kh8 25.Nd5 Bb2 26.Qe4 Ba1+-) 23.Nh6 1-0. Doppelganger (1890) - Dementeasesino (1795), Rated Classical game, lichess.org, 2013.

6.Nd4 Bg6 7.Be2 Nc4 8.Bc4 dc4 9.0-0 =.

6.Be2 Nc4 7.Bd4 Nf6 8.0-0 Bd6 9.d3 =.

6.Be2 Nf6 7.0-0 Bd6 8.Nd4 Bg6 9.f4=.

6.Be2 Nf6 7.0-0 Bd6 8.Nh4 Bg6 9.d3 (9.f4 Qe7=) 9...Qd7 (9...a6 A) worse 10.Ng6 hg6 (worse 10...fg6 11.e4+=) 11.h3 ab5-/+; B) 10.ba6 Ra6 11.f4=) 10.a4 (10.c4 dc4 11.dc4 a6=) 10...c6 (10...a6 11.c4=) 11.c4 (11.Bc3 b6=) 11...b6 (11...dc4 12.dc4 0-0-0 13.Nf3=+) 12.Nd2 (12.bc6 Qe7+=) 12...0-0 (12...dc4 13.dc4 Qc7 14.Nhf3=+) 13.Ng6 (13.cd5 cd5 14.Ng6 fg6+=) 13...fg6 14.cd5 (14.f4 a6+=) 14...cd5 (14...ed5 15.Nb3+=) 15.e4 (15.Rc1 a6 16.Bf6 gf6+=) 15...Bf4 16.e5 Ne8 17.Nf3 (17.Bc3 a6 18.d4 Bd2 19.Bd2 Nc4 20.ba6 Ra6+=) 17...Rc8+- 18.g3 Bg5 1–0. DEFFM – GuestLMBN, freechess.org, 2018.

6.Be2 Nf6 7.0-0 h6 8.Nd4 Bg6 9.d3 Bd6 10.Qd2 Be5?? (better 10...c5 11.Nf3 0-0=) 11.Qa5+- b6 (11...c5 12.Qd8 Rd8 13.f4+-) 12.Qd2 Bf5 (12...Qd7 13.Nc3+-) 13.Nc6 Qd6 (13...Bb2 14.Nd8 Rd8+-) 14.Be5 (14.Be5 Qd7 15.Qc3+-) 1–0. DEFFM – GuestSSMQ, freechess.org, 2018.

6.Be2 Nf6 7.Nh4 Be4 (7...Bg6 8.Bc3 Ne4 9.Ng6+=) 8.d3 Bg6 9.Ng6 (9.Bc3=) 9...hg6 10.Qd2 b6 11.c4 c6 12.Qc3 Nb7 (better is 12...cb5!? 13.cb5 Qd7+=) 13.bc6+= Nc5 14.Qc2 Qc7 (14...Rc8 15.d4 Nce4 16.Qa4+=) 15.cd5 (15.Bf6!? gf6 16.cd5 ed5 17.Nc3 Qc6 18.Bf3+/-) 15...Nd5+= 16.d4 Nb4 17.Qd1 Ne4 18.Nd2 Nd2 19.Qd2 Rh2 20.Rh2 Qh2 21.Bf3 Rc8 22.g3 Nc6 23.a3 e5 (better is 23...Na5 24.Rc1 Rc1 25.Qc1 Qg1 26.Ke2 Qc1 27.Bc1 Kd7+=) 24.Rc1+/- Ne7?? (better is 24...e4 25.Be4 Ne7+/-) 25.Rc8+- Nc8 26.Bc6 Ke7 (26...Kd8 27.de5 Nd6 28.ed6 Qg1 29.Ke2 Qb1+-) 27.de5 Ke6 (27...Qh3 28.a4 Qe6 29.Ba3 Nd6 30.Bd6 Kd8 31.Bf8 Kc7+-) 28.Qd7 1–0. Bonetti,Shane – Chessdaddy, ICC, 2002.

7.0-0 Nf6 A) 8.a4 Bd6 (8...c5 9.Ne5 Qc7 10.f4 Bd6 11.d3 0-0 12.Nd2 a6 13.Bc3 ab5; 8...Bb4 9.Ne5 Qd6 10.f4 Nd7 11.g4 Be4 12.d3 Bg6 13.c3 Bc5; 8...Nc4 9.Bc4 dc4 10.Ne5 Qd5 11.Bd4 Bb4 12.Nc3 Bc3 13.dc3 Nd7; 8...Bc5 9.Bc3 b6 10.Ne5 Qe7 11.Ba5 ba5 12.Nc3 0-0 13.Nc6 Qd6; 8...Qd8 9.Nd4 Bd6 10.Nf5 ef5 11.Bd4 0-0 12.Nc3 Ne4 13.Nd5 Bh2; 8...c6 9.Nd4 Bb4 10.Nf5 ef5 11.Bd3 Qe6 12.Qf3 Ne4 13.Bg7 Rg8) 9.Ne5 Qe7 10.g4 Bg6 11.f4 0-0 12.d3 Nd7 13.Ng6 hg6; B) 8.Nd4 Bg6 9.d3 a6 10.a4 c5 11.Nf3 Bd6 12.Ne5 Qc7 13.f4 0-0; C) 8.Ne5 Qd8 (8...Qd6 9.f4 Nd7 10.a4 Be7 11.g4 Bg6 12.Ng6 hg6 13.Bg7 Rh7) 9.Bd3 Bd6 10.f4 Bd3 11.cd3 c5 12.Nc3 0-0 13.Qc2 Rc8.

7.Na3 Nf6 8.Ne5 Qd6 (8...Qd8 9.0-0 Bd6 10.c4 0-0 11.Qa4 Nc4 12.Nac4 dc4 13.Nc4 a6) 9.0-0 Be7 10.d3 Qb4 11.Rb1 Qa4 12.c4 Qd1 13.Rfd1 h5.

7.Bd4 c5 8.bc6 Nc6 9.Nc3 Nf6 10.Ne5 Ne5 11.Be5 a6 12.g4 Bg6 13.Rb1 h6.

7.Bd4 Qd6 A) 8.Nc3 Nf6 (8...f6 9.Nh4 Ne7 10.Na4 Nc4 11.d3 Qa3 12.Nc5 e5 13.dc4 ed4; 8...Bg6 9.Be5 Qd8 10.0-0 Nf6 11.Bd4 Bd6 12.Ne5 0-0 13.f4 c5) 9.h3 h6 10.Be5 Qc5 11.0-0 Bd6 12.Bd4 Qa3 13.Bd3 Bd3; B) 8.h3 Ne7 (8...f6 9.Bc3 Qb6 10.0-0 Ne7 11.Nh4 Kf7 12.Bd4 Qd6 13.d3 a6; 8...Nf6 9.Nc3 h6 10.Be5 Qc5 11.0-0 Bd6 12.Bd4 Qa3 13.Bd3 Bd3; 8...h6 9.Be5 Qc5 10.Nc3 Nf6 11.0-0 Bd6 12.Bd4 Qa3 13.Bd3 Bd3; 8...Be4 9.0-0 Nf6 10.d3 Bf3 11.Bf3 a6 12.a4 Be7 13.Qd2 b6; 8...Nh6 9.0-0 f6 10.d3 e5 11.Bc3 b6 12.d4 e4 13.Nfd2 Kf7) 9.Nc3 f6 10.Na4 e5 11.Bc5 Qd7 12.Nh4 b6 13.Be7 Be7; C) 8.d3 a6 9.Nc3 Nf6 10.0-0 Be7 11.ba6 ba6 12.Be5 Qd7 13.e4 de4; D) 8.Be5 Qc5 (8...Qd7 9.Nd4 f6 10.Bg3 Nh6 11.Nc3 Bb4 12.Qb1 Bc5 13.Na4 Ba3; 8...Qd8 9.Nd4 Nf6 10.Nf5 ef5 11.Nc3 Be7 12.Bd3 0-0 13.Qf3 g6) 9.Nc3 Nf6 10.Bd4 Qa3 11.0-0 Bd6 12.Bd3 Bg6 13.h3 0-0.

7.Bd4 Ne7 A) 8.Nh4 Rc8 (8...Bg6 9.Nc3 Nf5 10.Nf5 Bf5 11.g4 Bg6 12.h4 c5 13.bc6 Nc6; 8...0-0-0 9.Nc3 Nc4 10.0-0 Kb8 11.d3 Nd6 12.g4 Bg6 13.a4 f5; 8...c5 9.Bc5 Rc8 10.Nf5 Rc5 11.Nd4 Nf5 12.Nb3 Nb3 13.ab3 b6; 8...f6 9.Bh5 Bg6 10.0-0 e5 11.Bc3 Qb5 12.a4 Qb6 13.Na3 Nac6; 8...a6 9.g4 Be4 10.f3 Bg6 11.a4 Nc4 12.Bc4 dc4 13.Nc3 Nd5; 8...Nc4 9.Nc3 a6 10.g4 Bg6 11.d3 Na3 12.Na4 Qb5 13.Nc3 Qb4; 8...Qd6 9.f4 Rg8 10.Nc3 g5 11.Be5 Qc5 12.fg5 Bg7 13.Bg7 Rg7; 8...c6 9.Nc3 Nc4 10.Bc4 dc4 11.a4 a6 12.ba6 Ra6 13.0-0 Ra5) 9.Nc3 c5 10.bc6 Nac6 11.Bb5 a6 12.Bc6 bc6 13.Bc5 Rb8; B) 8.0-0 Ng6 (8...f6 9.a4 Ng6 10.Bc3 Nc4 11.Nd4 Bc5 12.g4 Be4 13.d3 e5) 9.Re1 f6 10.Bc3 Nc4 11.d3 Nb6 12.Nd4 Ne5 13.a4 Bg6; C) 8.Ne5 Qd6 (8...Qd8 9.g4 Be4 10.f3 f6 11.fe4 fe5 12.Bc3 Nc4 13.Bc4 dc4) 9.f4 c5 10.Bc3 f6 11.0-0 fe5 12.Ba5 ef4 13.ef4 Kf7; D) 8.Nc3 f6 9.Nh4 e5 10.Bc5 Be6 11.Bb4 Nc4 12.0-0 Ng6 13.Bf8 Kf8.

7.Bd4 f6 8.Nh4 Ne7 9.g4 Be4 10.f3 Bg6 11.Nc3 e5 12.Bc5 Bf7 13.0-0 g5.

7.Bd4 Nf6 8.Ne5 Qd6 9.Nc3 Be7 10.g4 Bg6 11.h4 h6 12.Rb1 Be4 13.Rg1 c5.

7.Ne5+= Qd6 8.g4 (8.f4 f6 9.Nf3 (9.Ba3 Qd8 10.Bf8 Kf8 11.Nf3 Ne7 12.Nc3 Kf7 13.0-0 c5) 9...Nh6+= 10.0-0 Kf7 11.Bd4 Be7 12.Nc3 Rhf8 13.Rb1 Kg8; 8.Bd4 f6 9.Nd3 e5 10.Bc5 Qe6 11.Bf8 Kf8 12.Nc3 Ne7 13.0-0 Kf7; 8.0-0 Nf6 (8...Ne7 9.Nf3 Nc4 10.Bc4 dc4 11.Na3 Qb4 12.Rb1 Ng6 13.Qe2 c3; 8...f6 9.Nd3 Nc4 10.Bd4 e5 11.Bc5 Qe6 12.Nc3 Bd3 13.cd3 Nb2; 8...Be7 9.f4 Qb4 10.Bd4 Nf6 11.g4 Be4 12.d3 Bg6 13.f5 ef5) 9.f4 Qb4 10.Bd4 Bc5 11.a3 Qd4 12.Nc3 Qc3 13.dc3 Be3) 8...Be4 (8...Bg6 9.Bd4 f6 10.Ng6 hg6 11.Bc3 Qb6 12.Bd3 g5 13.Qe2 0-0-0) 9.f3 Bg6 10.Bc3 b6 11.0-0 (11.Bd4 f6 12.Ng6 hg6 13.f4 e5) 11...0-0-0 (11...Nf6 12.f4 Nd7 13.Bb2 Ne5) 12.f4 f5? (better is 12...f6 13.Ng6 hg6+=) 13.Ba5+- ba5 14.gf5 Bf5 15.Nf7 Qe7 16.Nh8 Qc5?? (16...Qf6 17.d4 Nh6+-) 17.Nf7 (17.Nf7 Re8 18.c3+-) 1–0. Anonymous – Anonymous, internet, 2011.

7.Ne5+= Qd8 A) 8.0-0 Nf6 (8...f6 9.Nf3 Bc5 10.Nc3 Ne7 11.Na4 Bd6 12.Nd4 Kf7 13.f4 Bg6) 9.Bd4 Bd6 10.Nc3 0-0 11.f4 c6 12.bc6 bc6 13.Na4 Rb8; B) 8.Bc3 f6 9.g4 Be4 10.Nf3 c6 11.0-0 Bf3 12.Bf3 Bd6 13.Qe2 Ne7; C) 8.d3 a6 (8...Bd6 9.g4 Bg6 10.Qd2 b6 11.Ng6 hg6 12.Bg7 Rh7 13.Bb2 Qg5; 8...Nf6 9.Qd2 c5 10.g4 Bg6 11.Na3 Bd6 12.g5 Nh5 13.f4 0-0) 9.a4 Nf6 10.Qd2 c5 11.Bc3 ab5 12.ab5 b6 13.Ba5 Ra5; D) 8.Nc3 d4 (8...Bd6 9.g4 Be5 10.gf5 ef5 11.d4 Bf6 12.Qd2 Ne7 13.0-0-0 c6; 8...Nf6 9.g4 Bd6 10.gf5 Be5 11.Rg1 0-0 12.f4 Bd6 13.Bd3 d4) 9.Na4 de3 10.de3 Qd1 11.Bd1 Bb4 12.Bc3 Bc3 13.Nc3 f6; E) 8.Bh5 Nh6 (8...g6 9.Bf3 f6 10.g4 Be4 11.g5 Bb4 12.Ng4 Nc4 13.Bf6 Nf6) 9.Bc3 g6 10.Bf3 Bg7 11.0-0 0-0 12.d4 c5 13.g4 Be4; F) 8.g4 Be4 9.0-0 f6 10.d3 Bd6 11.de4 Be5 12.Be5 fe5 13.Qd2 c6.

5.Ba3 b6 6.h3 (6.Nf3 Nh6=) 6...c5 (6...e5!?=) 7.bc6+= Nc6 8.Bb5 Bd7 (8...Qd7!?+=) 9.Qh5+- g6 10.Qd5 Qc7 (10...e6 11.Qe4 f5 12.Qc4 Ba3 13.Na3+- (13.Bc6? Bb2–+)) 11.Ba6 (11.Nf3 e6 12.Qb3 Ba3 13.Na3 Nge7+-) 11...Bg7 (11...e6 12.Qb3+-) 12.d4 (12.Nf3 f5 13.d4 Nf6+-) 12...e5? (better 12...Rb8 13.Nc3 b5 14.Bb5 Qa5+-) 13.Bd6?? (better 13.Nc3 Nge7 14.Qc4+-) 13...Nge7=+ 14.Be7 Ke7 15.a3? (better 15.Nc3 ed4 16.ed4=+) 15...Rhd8?? (better 15...Be6 16.Qf3 ed4–+) 16.Bc4+= Rf8 17.Nf3 (17.Ne2 Rac8 18.Ba2 ed4 19.ed4=) 17...Rad8 (17...Na5 18.Ba2 Qc2=) 18.Qb5?? (better 18.Nc3+-) 18...Nd4?? (better 18...Ke8 19.Qb2 Nd4 20.ed4 Qc4=+) 19.Qb4+- Qd6 20.Qd6 (20.ed4!? e4 21.Ng1 b5+-) 20...Kd6 21.ed4 e4 (21...ed4 22.0-0+- (worse 22.Nd4 Kc5-/+)) 22.Nfd2 (22.Ng1 b5 23.Bb3 f5+-) 22...Rde8 (22...f5 23.c3 b5 24.Be2+-) 23.0-0 (23.Nc3 f5 24.0-0-0 Rc8+-) 23...e3 (23...f5 24.Rd1+-) 24.fe3 Re3 25.Nf3 f5 26.Nbd2 Bc6 27.Bd3 (better 27.Rae1 f4 28.Ba6+-) 27...Rfe8?? (27...Rf3 28.Nf3 Bf3 29.gf3 Bd4 30.Kg2 Ba1 31.Ra1 Rd8+-) 28.Nc4 Kd5 (28...Kd7 29.Ne3 Re3 30.Rad1+-) 29.Ne3 Re3 30.Rae1 f4 (30...Bd4 31.Nd4 Kd4 32.Re3 Ke3 33.Re1 Kf4 34.Re7+-) 31.Re3 fe3 32.Re1 (32.c3 Kd6+-) 32...Bh6 (32...Bd4 33.Ng5 Bc5 34.Be4 Kd6 35.Kf1+-) 33.Re2 (33.Ne5 Bf4+-) 33...a5 (33...Ba4 34.c3+-) 34.c4 Kd6 35.Ne1 (35.Ne5 Be8+-) 35...Bf4 (35...Bg7 36.d5 Ba4 37.Nc2+-) 36.Nc2 g5 (36...Bg5 37.Ne3 Bh6 38.Kf2+-) 37.Ne3 h5 (37...Kc7 38.Bh7 Bd6 39.Ra2+-) 38.Nf5 (better 38.g3!? Be3 39.Re3 Bd7+-) 38...Kc7 39.Ng7 (better 39.Ne7 Bb7 40.Be4+-) 39...g4 (39...Bc1+-) 40.Ne6 Kd6 41.Nf4 a4 42.Nh5 Kc7 43.hg4 Kb7 44.g5 Ka6 (44...b5 45.g6 b4 46.g7 Kc7 47.g8Q Be4 48.Qf7 Kb6 49.c5 Kc6 50.Ba6 ba3 51.Qb7) 45.g6 Bd5 (45...b5 46.g7 Ka5 47.g8Q b4 48.c5 ba3 49.Qc4 a2 50.Qc3) 46.cd5 Ka5 (46...b5 47.g7 Kb6 48.g8Q Kc7 49.Re7 Kb6 50.Qe6 Ka5 51.Ra7) 47.g7 b5 48.Bb5! Kb6 (48...Kb5 49.g8Q) 49.g8Q Ka5 (49...Kb5 50.Qb8 Ka6 51.Re6 Ka5 52.Qb4) 50.Qa8 (50.Rb2 Kb6 51.Qf7 Ka5 52.Qc7) 50...Kb6 (50...Kb5 51.Qb8 Kc4 52.Nf4 Kd4 53.Qb4) 51.Qa6 Kc7 52.Re7 (52.d6 Kb8 53.Re8) 52...Kd8 53.Qd6 Kc8 54.Qc7 1–0. Vila Vila,Ricard – Perez Ronquillo,Santi, 1r Obert de la Vall del Tenes, 2012.

5.Ba3 e5 6.Bf8 Kf8 7.Be2=+.

5.c3 Nc4!? 6.Bc1 e5=+.

5.c3 Bd7 6.Qh5+= g6 7.Qd5 e6 8.Qe4 f5 (8...c6 9.Ba3+=) 9.Qf3 (9.Qa4 b6+/-) 9...e5 (9...Bg7 10.d4+/-) 10.c4 e4 11.Qd1 Be6?? (better 11...Nf6+/-) 12.Bh8+- Nc4 13.Bc4 (13.Nh3!? Nb6+-) 13...Bc4 14.b6! cb6 (14...ab6 15.Ne2 Combination; 14...cb6 15.Ne2 Combination) 15.Qa4 (15.Ne2 Ne7+-) 15...b5 16.Qc2 Bb4 (16...Rc8 17.Qd1 Nf6+-) 17.Qb2 (17.Ne2 Rc8 18.Qb2 Be2 19.Ke2 Qd3 20.Kd1 Bc5+-) 17...Qd5?? (better 17...Qd3 18.Qe5 Ne7-+) 18.Nh3 (18.Qb4 Qd3 19.Kd1 Qf1 20.Kc2 Qg2+-) 18...0-0-0 (18...Bd6 19.Na3+-) 19.Nf4 (better 19.Qb4 Qd3 20.Qc5 Kb8+-) 19...Qc5 (19...Qd6 20.Be5 Qe7 21.a4+-) 20.Bd4 Qe7 21.Bc3 (better 21.Ba7 Bd6 22.Bd4 Kd7+-) 21...Bd6 22.Ne2 a6 23.Bd4 1-0. felixrbran - Maxxash (1765), Rated Classical game, lichess.org, 2013.

5.Bc3 b6 6.Qf3 (6.Ba5 ba5 7.c4 Bb7+/-) 6...e6 7.Ba5 ba5 8.c3 (8.c4 a6+=) 8...c6 9.bc6?? (9.Bd3 cb5 10.Bb5 Bd7 11.Bd7 Qd7=) 9...Ne7?? (better 9...Qb6 10.Qd1 Qb2-+) 10.Bb5= Rb8?? (10...Qb6 11.c4 a6 12.Nc3 ab5 13.cb5-/+) 11.Qe2 (better 11.c7 Rb5 12.cd8Q Kd8 13.d4+-) 11...Rb5? (better 11...Qc7=) 12.Qb5+- Kf7 (12...Qb6 13.Qb3+/-) 13.Nf3 Qb6 14.a4 Nc6 15.0-0 (15.Ra2 Bd6 16.Rb2 Qc7+-) 15...h5 (15...Ba6 16.Qb6 ab6 17.Rc1+/-) 16.d4 (16.Na3+-) 16...Bd7? (better 16...Ba6 17.Qb6 ab6+/-) 17.Nbd2 Be7 (17...h4 18.e4 Qc7 19.Rfc1 de4 20.Ne4+-) 18.Rfb1 Rb8 (18...Qc7 19.Qd3+-) 19.h3 (19.Qd3!? Qd8+-) 19...Qc7 20.Qa6 Nd8 (20...Rb1 21.Rb1 Nd8+-) 21.c4?? (21.Rb8 Qb8 22.Qa5 Qb6 23.Qb6 ab6+-) 21...Rb1?? (better 21...Bc8 22.Qb5 Rb5 23.cb5 g5-+) 22.Rb1+- (22.Nb1?! Bc8 23.Qb5 Qc4 24.Qc4 dc4+-) 22...dc4 23.Nc4 Ba4 24.Na5 g5 (24...Bc2 25.Rc1+-) 25.Nb7 Nc6 (25...Nb7 26.Rb7 Qc1 27.Kh2 Qc6 28.Qa7 Qd6 29.Kg1 Bc6+-) 26.Qa4 g4 27.hg4 hg4 28.Nh2 g3 29.fg3 Qg3 (29...Kg8 30.Rc1 Qb7 31.Qc6 Qc6 32.Rc6+-) 30.Qc6 Qe3 31.Kh1 Qd4 32.Rf1 (32.Nf3 Qd5 33.Qc7 Qd3+-) 32...f5 (32...Qd5 33.Qc7+-) 33.Nf3 Qd3 (33...Qf6+-) 34.Ne5 Kf6 1-0. Fuirio (1605) – mpumprla, Rated Classical game, lichess.org, 2013.

5.Be2 a6 6.ba6 ba6 7.Nf3 Nh6 8.0-0 e5 9.d4 e4 10.Nfd2 Bb4 11.c4 Bd2 12.Nd2 0-0 13.cd5 Qd5 14.Ne4 Qe4 15.Bf3 Bg4 16.Be4 Bd1 17.Ba8 Be2 18.Bd5 Kh8 19.Rfc1 c6 20.Bc6 Rc8 21.Bd5 Rd8 22.Rc5 Rb8 23.Bc3 Nb7 24.Rb1 Bb5 25.Rbb5 ab5 26.Rb5 Ra8 27.Rb7 Ra3 28.Rb8 1–0. Machete99 – guest756, ICC, 2002.

5.Be2 b6 6.Nf3 e5 7.0-0 e4 (7...Kf7 8.d4 e4 9.Nfd2+=) 8.Nd4+- Bd7? (better 8...Bc5+-) 9.Nc3 1–0. GuestNDSG – ghhhhhjjjj, freechess.org, 2020.

5.Be2 e5 6.Nc3+=.

5.f4 Qd6 6.Ba3 Qb6 (6...Qe6 7.Nf3+=) 7.Nc3 Nc4?? (better is 7...c6+=) 8.Nd5+- Qa5 (8...Na3 9.Nb6 ab6 10.Nf3+-) 9.Bb4 Qa4 10.Bc4 (10.Bc4 Be6 11.Bb3 Bd5 12.Ba4 Bg2 13.b6 c6 14.Bc6 Bc6 15.Nf3+-) 1–0. Janek – Andrew, internet, 2016.

5.Qc1 Bd7 6.e3 =+.

5.Qc1 e6 6.Bd4 Nd6 (6...f6 7.e3+=) 7.Nc3 (7.e3 f6=) 7...b6 (7...Nf5 8.Be5+=) 8.g3 (8.Be5 a6=) 8...h6 (8...f6!?+=) 9.Bg2= Nf6 (9...a6 10.a4=) 10.0-0 Nc4 (10...a6 11.a4=) 11.a4 (11.d3 Nd6+=) 11...Bd6 (11...a6 12.d3 Nd6 13.Qf4+=) 12.d3 Na5 13.e4 e5? (better is 13...Be7!?+/-) 14.Ne5+- Be5 (14...c5 15.bc6 de4 16.Ne4 (16.Be4?! Ne4 17.Ne4 f6+/-) 16...Ne4 17.Be4+-) 15.Be5 d4 (15...Ng4 16.Bg7 Rh7 17.f3 Rg7 18.fg4 de4 19.Ne4 Qd4 20.Kh1+-) 16.Nd5 Nd5 17.ed5 0-0 (17...f6 18.Bd4 0-0 19.Qf4+-) 18.Bd4 (18.Qf4 Bb7+-) 18...Bb7 (18...a6 19.Re1+-) 19.Qb2 (19.Qf4 f6 20.Qf5 Re8+-) 19...Qg5 (19...f6 20.c4+-) 20.f4 Qf5 (20...Qg6 21.f5 Qg5 22.Rae1+-) 21.Bg7 Rfe8 22.Rae1 Bd5 (22...Qg6 23.Be5+-) 23.Bh6 (23.Bd5!? Qd5 24.Bh6 f6 25.Qf6 Qf7 26.Qg5 Kh7+-) 23...Bg2 (23...Qh7 24.Bd5 c6 25.bc6 Qh6+-) 24.Qg7 1–0. marre – bajkmf, internet, 2010.

5.Qc1 Nf6 6.Bf6 ef6 7.d3 (7.e3 Ne5=+) 7...Nb6 (7...Nd6 8.Nc3=+) 8.a4 (8.e3 Bb4 9.c3 Bd6=+) 8...Bd6 (8...a6 9.Nbd2-/+) 9.Nbd2 (9.a5 Nd7=) 9...0-0 (9...a6 10.a5 Nd7 11.ba6 Ra6 12.d4=+) 10.g3 (10.e3 a5=+) 10...c6 (10...a6 11.a5 Nd7 12.ba6 Ra6 13.Bg2-/+) 11.a5 (11.bc6 bc6 12.d4 Bg4=+) 11...Nd7 12.bc6 (12.Qb2 a6 13.b6 Re8=+) 12...bc6 13.Bg2 Ba6 (13...Bb4 14.c4-/+) 14.c4 (14.0-0 Rb8=) 14...dc4 (14...Re8 15.0-0=) 15.Nc4 (15.dc4 Rb8=) 15...Bb4 16.Nfd2 (16.Kf1 Re8=) 16...Rc8 (16...Re8 17.Kd1=) 17.0-0= Qe8 (17...Re8 18.Be4=) 18.Ne4 (18.Be4 Bc4 19.Nc4 Nc5+/-) 18...Qe6= 19.Qc2 f5 (19...Rb8 20.Rfb1+=) 20.Ng5+= Qh6 21.h4 f4= 22.Bh3 Rc7 23.Bd7 Rd7=+ 24.Ne5 Rc7 25.Qb3 c5 26.Rfc1? fg3–+ 27.fg3 Qd6 28.Ngf3 Bb7 29.e4 a6 30.Kg2 Kh8 31.Nc4 Bc8?? 32.Nd6+- Be6 33.Qc2 f6 34.Nd4 Bd7 35.Qf2 cd4 36.Rc7 Bc3 37.Rb1 Bg4 38.Rbb7 Rg8 39.Nf7# 1–0. coloplayah (2185) – cicero (1835), net–chess.com, 2006.

5.Bc3 Bd7 6.d3 Nd6 7.a4 a6 8.ba6= Ra6 9.e4 (9.a5 Nb5=) 9...de4 10.de4 Ne4 (better 10...Ra4 11.Ra4 Ba4=) 11.Ba6+- Nc3 (11...ba6 12.Ne5 Be6 13.Qe2+-) 12.Nc3 ba6 13.0-0 e6 14.Qe2 (14.Ne5 Nf6+-) 14...Qa8 15.Qe5 Qa7 (15...Qc6 16.Rfb1 f6 17.Rb8 Kf7 18.Qe3+-) 16.Nd5 Ne7? (better 16...Kd8 17.Nc3 Nf6+-) 17.Qc7 (17.Nc7 Kd8 18.Ng5 Ng6 19.Nf7 Kc8+-) 17…Nd5 1–0. DEFFM – GuesFLHB, freechess.org, 2018.

5.Bc3 Bd7 6.d3 Nd6 7.a4 c6 8.bc6= Bc6 9.e3 Nf6 (9...Rc8 10.Be2=) 10.Nbd2 (10.Be2 Qc7=) 10...Qc7 11.Be2 Ba4 12.Ra4 (12.Bf6 Bc2 13.Qc1 ef6 14.Qb2+/-) 12...Qc3-/+ 13.0-0 e6 (13...a5 14.Nb1 Qc7 15.Ra3-/+) 14.Nd4 (14.e4 de4 15.de4 b5=+) 14...Be7 15.N2b3 (15.f4 0-0-/+) 15...0-0 (15...e5 16.Nf3-/+) 16.f4 b5 (16...a6-/+) 17.Ra1 (17.Ra6=+) 17...Rac8?? (17...a5!?–+) 18.Bf3 Rc7 19.h3 Nd7 20.e4 Nc5 21.e5 Nc8?? 22.f5?? Nb3–+ 23.Nb3 Qc2 24.Qc2= Rc2 25.Rac1 Rc1 26.Rc1 Bb4 27.Rc7 a5 28.fe6=+ fe6 29.Rb7? Bc3 (30.Bg4 a4 31.Be6 Kh8 32.Rb5 ab3 33.Rb3 Bd4 34.Kh2 Nb6–+) 0–1. ida1 – Splitter, Live Game Caissa's Web, 2005.

5.Bc3 e5 6.Ne5 Ne5 7.Be5 Bd6?? 8.Bg7+- Ne7 (8...Be5 9.Be5 f6 10.Bd4+-) 9.Bh8 a6 10.e3 Ng6 11.Bd4 Bd7 (11...ab5 12.Qh5+-) 12.ba6 Ra6 1-0. onlysully (1650) – ayla, Rated Classical game, lichess.org, 2013.

5.Bc3 e6 6.e3 Bd6?? (better is 6...f6=) 7.Bg7+- Nb2 8.Qc1 Nc4 9.Bh8 f5 (9...Ne7 10.Bc4 dc4 11.Qb2+-) 10.d3 Na5 11.Qb2 Bd7 (11...Ne7 12.Qg7 Qd7 13.Qh7 Qb5 14.Ne5 Be5 15.Be5+-) 12.Qg7 Ne7 13.a4 c5 (13...Ng6 14.Qh7 Nh8 15.Qh8 Ke7 16.Qg7 Ke8 17.d4+-) 14.Ne5 (better is 14.Ng5!? Bc8+-) 14...Be5 15.Qe5 Qb6 (15...Ng6 16.Qg7+-) 16.Bf6 (16.Qg7!? 0-0-0 17.Qh7 Re8+-) 16...Ng6 17.Qb2 e5 18.Be5 Ne5 (18...0-0-0 19.Bc3+-) 19.Qe5 Kd8 20.Qd5 Kc7 21.Nd2 Rd8 22.Nc4 Bb5 (22...Nc4 23.Qc4 Kb8+-) 23.Qd8! Kd8 24.Nb6 ab6 25.ab5 Kc7 26.Be2 Kd6 27.0-0 (27.Ra4 c4+-) 27...c4 28.dc4 Kc5 29.Ra5! ba5 30.Ra1 Kb4 31.c3! Kb3 (31...Kc3 32.Ra5 Deflection) 32.Ra5 b6 33.Ra6 1–0. Fournier,Frederic (2040) – joseborges01 (1630), Active, 2004.

5.Bc3 Bg4 6.e3 e5 7.Bc4 e4 8.h3 (better is 8.Be2 ef3 9.Bf3 Bf3 10.Qf3+/- (< 10.gf3 Qg5=)) 8...dc4? (better is 8...ef3 9.gf3 Bf5=) 9.hg4+- ef3 10.Qf3 (10.gf3?! a6+=) 10...Qd6 (better is 10...Qc8+-) 11.Qb7 Rd8 12.Qe4 Ne7 13.Qc4 (13.Rh7 f5 14.Qe7 Be7 15.Rh8 Kf7 16.Rd8 Qd8+/-) 13...Qg6 14.f3 (14.d3 Rd7+-) 14...Nc8? (14...Qc2 15.Na3 Qg6 16.Qc7+-) 15.d3 Be7 16.Qc7 0-0 17.Nd2 Bd6 18.Qc4 Bg3 19.Ke2 Nd6 20.Qc7 (20.Qd5 a6 21.ba6 Rc8+-) 20...Rc8 (better is 20...Rb8 21.Rh5 Nb5 22.Qg3 Nc3 23.Kf1 Rb2+/-) 21.b6?? (better is 21.Qa5 Rfe8 22.a4+-) 21...Rc7–+ 22.bc7 Rc8 23.Ba5 (23.Rab1 Rc7 24.Ne4 f5 25.Ng3 Rc3–+) 23...a6 (better is 23...Qe6–+) 24.Rab1-/+ Nb5 25.a4 Bc7 26.ab5 Ba5 27.c4 Qd6 28.ba6 Qa6 29.Rb5? (better is 29.Ne4-/+) 29...g6?? (better is 29...Bd2 30.Kd2 Qa2 31.Kc3 Qg2–+) 30.Ra1+- Qe6 31.Raa5 Kg7 32.Re5 Qb6 33.Rab5 Qa6 34.Re7 Qa2 35.Rbb7 Rf8 36.e4 Qc2 (36...Qa1 37.e5 Qg1 38.Ne4+-) 37.Ke3 (better is 37.e5!? h5+-) 37...Qc3 38.c5?? (38...Qc5 39.d4 Qc3 40.Ke2 Qd4 41.e5=; better is 38.e5 Qc1 39.Rb1+-) 1–0. MasterofDisaster – 08phypeach, Live Game Caissa's Web, 2004.

5.Bd4 b6 6.e3 (6.e4 a6 7.Nc3 e6+=) 6...Nd6 (6...a6 7.d3 Nd6 8.c4=) 7.Nc3+= Bb7 (7...Nf5 8.Be5+=) 8.Be2+/- Nf5 9.0-0 Nd4 10.Nd4 (10.ed4 a6+=) 10...e5= 11.Nf5 (11.Nf3 Qf6=) 11...g6 (11...Qg5 12.Ng3=) 12.Ng3 Bd6 (12...a6 13.f4=) 13.f4 e4 (13...a6 14.ba6 Bc6 15.Nb5+/-) 14.d3 (14.a3 Nf6+=) 14...f5 15.de4 de4 16.Qd4 Qf6 17.Nd5?? (better is 17.Qf6 Nf6 18.Rfd1=) 17…Qd4–+ (18.Nc7 Kd7 19.ed4 Kc7–+) 0–1. lim2 – skoren, Caissa.com, 2004.

5.Bd4 Bf5 6.e3 Qd7 7.Bc4 dc4 8.Nc3 0-0-0 (8...f6 9.e4 Bg4 10.Be3+=) 9.Ne5+/- Qe6 10.0-0 (10.g4!? Bg6 11.f4+/-) 10...f6= 11.Nf3 Nh6 (11...Kb8 12.Nh4=) 12.Qe2 (12.Ba7 Bg4+/-) 12...b6 (better is 12...Bc2!? 13.Rfc1 Bd3+=) 13.e4+= Bg4 14.h3?? (better is 14.Be3+=) 14...Bf3–+ 15.Qf3 Rd4 16.d3 cd3 17.cd3 f5 (17...Qd7 18.Rfd1–+) 18.a4 (18.Rac1 Qd7 19.Nd5 Kd8–+) 18...fe4 19.de4 Qe5 (19...g5 20.Qe3 Qe5 21.a5–+) 20.Rfe1 (better is 20.a5!? Kb8 21.Rfd1 Rd1 22.Qd1 ba5 23.Ne2–+) 20...e6 21.a5 Bb4 (21...Kb8 22.ab6 cb6 23.Rad1 Rd1 24.Rd1–+) 22.ab6 ab6?? (better is 22...Rc4 23.ba7 Kb7–+) 23.Ra8+/- Kd7? (better is 23...Kb7 24.Rh8 Rc4+/-) 24.Rh8+- Bc3 (24...Rd2 25.Re3+-) 25.Qc3 (better is 25.Qf8 Qf6 26.Qe8 Kd6 27.e5 Qe5 28.Qd8 Kc5 29.Re5 Kb4 30.Qc7 Rd1 31.Kh2 Be5 32.Qe5+-) 25...Rd1 (25...Ke7+-) 26.Qc6 1–0. TriAngel – KingTony, ICC, 1999.

5.Bd4 Nf6 6.e3 Nd6 7.Be2=.

5.Bd4 Nf6 6.e3 e5 7.Ne5+= Ne5 8.Be5 Nd7 (8...Bd6 9.Bd4+=) 9.Bb2 c5 10.Qf3 Nb6 11.a4 (11…h5 12.a5+/-) 1–0. Trkn – guest2472, ICC, 2004.

5.Bd4 Nf6 6.e3 e6 (6...Bg4!?=) 7.Bc4+= dc4 8.0-0 (8.Qe2 a6 9.Qc4 ab5 10.Qb5 c6+=) 8...Bd7 9.a4 a6 10.Nc3 Bd6 (10...Bb4 11.Ne5+=) 11.Qe2 Qe7 (11...Ng4 12.Qc4 e5 13.Bc5+/-) 12.Ne5+/- (worse 12.Qc4 e5 13.Ne5 Be5 14.Be5 Qe5=+) 12...c5 13.bc6 bc6 (13...Be5 14.cb7 (worse 14.cd7 Nd7 15.Qc4 0-0+/-) 14...Bh2 15.Kh2+-) 14.Nd7 Qd7 15.Bf6 gf6 16.Qc4 0-0 17.Qg4 Kh8 18.Qd4 e5 19.Qc4 Rg8 20.Rfb1 Rg4 21.e4 Rag8 (better 21...Rg2! 22.Kg2 Rg8 23.Kf1 Qh3 24.Ke2 Qh5 25.f3 Rg2 26.Kd1 Rg1 27.Ke2 Rg2 28.Kd1 Rg1 29.Ke2 Rg2=) 22.g3+- f5 23.Rb6 c5 (23...Bf8 24.Ra6 fe4 25.Ne4+-) 24.Qa6 Bc7 25.Rb7 Qd2 26.Qf6 (26.Rc7?! Qc3 27.Rc1 Qd2 28.Qf6 R4g7+-) 26...R4g7 27.Nb5 (27.Rc7 Qc3 28.Rd1 Qc2+-) 27...Bd8 28.Qf5 Rf8 (28...f6 29.Rg7 Kg7 30.Qe6+-) 29.Qe5 Kg8 (29...Qc2 30.a5 f6+-) 30.Qc5 f5 (30...Qe2 31.Nd6+-) 31.Rg7 Kg7 32.Nd4 fe4 (32...Re8 33.Nf5 Kg8+-) 33.Ne6 Kg8 (33...Kf7 34.Nf8 Be7 35.Qf5 Kg8 36.Nh7 Qc2+-) 34.Qf8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Bd4 Bg4 6.d3 Nd6 7.Nc3 =.

4.a3+- a5 5.ab4 b6 6.ba5 Ra5 7.Ra5 ba5 8.Nf3 c6 (8...e6 9.e3+-) 9.bc6 Qb6 10.Qc1 Nf6 11.e3 Qc6 12.Nd4 (12.Nc3 Bd7+-) 12...Qb6 13.Bb5 Bd7 14.Bd7 Nd7 15.Nf3 e5 (15...e6 16.0-0+-) 16.Ne5 Ne5 17.Be5 Bc5 18.Bg7 Rg8 19.Bf6! Rg2? (19...Qf6 20.0-0 Combination) 20.d4 (20.Qb2!? Qb2 21.Bb2 Kd7+-) 20...Bb4?? (20...Qf6!? 21.Qd2 Bb4=) 21.c3?? (better 21.Kf1 Rg6 22.c3 Qf6 23.cb4 ab4 24.Qc8 Qd8 25.Qc2+-) 21...Qf6+= 22.Qd2 (22.Qb2!? Be7 23.Qb8 Bd8 24.Rf1+=) 22...Bd6 23.Kf1? (23.Qe2 Bh2 24.Nd2 Bg1+=) 23...Qg5 (better 23...Qf3!? 24.Rg1 Rh2-/+) 24.Qe2 Bh2 25.Nd2?? (better 25.Qb5 Ke7 26.Nd2=) 25...Rg1 26.Rg1 Qg1 0–1. alessandrocarvalhaes (1855) – TnsFlw13 (1855), lichess.org, 2020.

4.a3+- Na6 5.ba6 ba6 6.e3 Bb7 7.Qg4 Nf6 8.Bf6 ef6 9.Ba6 Ba6 10.Qa4 c6 (10...Qd7 11.Qa6 c6+-) 11.Qc6 (11.Qa6?! Qc8 12.Qa4 Bd6+-) 11...Ke7 12.Qa6 Ke8 (12...Qb6 13.Qa4 Qb2 14.Qb4 Qb4 15.ab4+-) 13.Qc6 (13...Ke7 14.Nc3+-) 1–0. beat – NOKIA77, Live Game Caissa's Web, 2004.

4.a3+- Na6 5.ba6 ba6 6.Nf3 Bb7 7.c4 dc4 8.Qa4 c6 9.Qc4 e6 10.Bd4 Nf6 11.Nc3 Be7 12.Rb1 Rb8 (12...Qd7 13.Na4+-) 13.Ba7 0-0 (13...Nd7+-) 14.Bb8 Qb8 15.Qb3 Qc7 16.Qb7 Qb7 17.Rb7 Ba3 18.Ra7 Rb8 19.Ra6 Ne4 20.Ra3 c5 21.e3 Rb2 22.Ra8 Rb8 23.Rb8 1–0. orane (2095) – amremadel, Live Game Caissa's Web, 2004.

4.a3+- c5 5.ab4 cb4 6.e3 Bf5 7.Nf3 Qb6 (7...Nf6 8.Bd4+-) 8.Bd4 Qg6 (8...Qd6 9.c4+- (< 9.Ra7 Ra7 10.Ba7 b6+-)) 9.b6 Nf6 (9...Bc2 10.Bb5 Kd8+-) 10.Ra7 Ra7 (10...Rb8 11.Ne5 Qh6 12.Bb5 Bd7 13.Nd7 Nd7+-) 11.ba7 (11...e5 12.a8Q Ke7 13.Ne5+-) 1–0. MrkT – kezinator, internet, 2005.

4.a3+- c6 5.ab4 cb5 6.e3 e6 (6...Bd7 7.Nc3+-) 7.Bb5 Bd7 8.Bd7 Qd7 9.Nf3 Bb4 (9...f6 10.Ba3 Bd6+-) 10.Bg7 (10.Bg7 f6 11.Bh8+-) 1–0. mtr – cassifornia, internet, 2001.

4.a3+- Nc6 5.bc6 bc6 6.e3 Nf6 7.c4 (7.Nf3 e6+-) 7...dc4 (7...e6 8.Nf3+-) 8.Bc4 Ba6 (8...Nd5+-) 9.Ba6 Nd5 (9...Rb8 10.Bd4 Qd5 11.Nf3+-) 10.Bb7 Nb4 (10...e6 11.Bc6 Ke7 12.Ba8 Qa8+-) 11.ab4 e5 12.Bc6 Ke7 13.Be5 f5 14.Qc2 g5 15.Qf5 (15.Bh8 Rb8 16.Qf5 Bg7 17.Bg7 Qd6 18.Ra5 Qc6 19.Re5 Kd8 20.Qf8 Kd7 21.Re7 Kd6 22.Qf6 Kd5 23.Qd4) 15...Bh6 16.Qf6 1–0. DEFFM – GuestWDJV, freechess.org, 2018.

4.a3+- Nc6 5.bc6 bc6 6.Nf3 Nf6 7.e3 e6 8.Be2 Bc5 9.0-0 0-0 10.Nc3 a5 11.Na4 Qd6 (11...Bd6 12.c4+-) 12.Nc5 Qc5 13.Bf6 gf6 14.d4 Qd6 15.c3 c5 16.dc5 Qc5 17.Qd4 Qd6 18.Qf6 Qc5 (18...Ba6 19.Ba6 Ra6 20.c4+-) 19.Bd3 (19.Ne5 Qc3 20.Bh5 Qe5 21.Qe5 c5+-) 19...e5 (19...Ba6 20.Bc2 d4 21.Ne5 Bf1 22.Qg5 Kh8 23.Nf7 (23.Kf1?! f5 24.Qf4 de3+-) 23...Rf7 24.Qc5+-) 20.Qe5 (better is 20.Ne5 Qd6 21.Qg5 Kh8 22.Qh5+-) 20...Rd8 (20...f6 21.Qh5 Rf7+-) 21.Qg5 Kf8 22.Qd8 Kg7 23.Qg5 Kf8 24.Bh7 Ke8 25.Ne5 Qc3 26.Qg8 1–0. Kappel,Ray – Roch,Gui, OP–2010-0-01148, 2010.

4.a3+- d4 5.ab4 e5 6.e4 Bb4 7.Nf3 f6 (7...Qe7 8.c3 Bc5 9.Bc4+-) 8.Bc4 a6 (8...Ne7 9.0-0+-) 9.ba6 ba6 10.Ne5! fe5 11.Qh5 g6 (11...Kd7 12.Qe5 Ne7 13.Qd4 Bd6+-) 12.Qe5 Ne7 (12...Qe7 13.Qh8 Qe4 14.Kd1 Bg4 15.f3 Bf3 16.Kc1 Bg2 17.Qg8 Kd7 18.Qh7 Kd6+-) 13.Qh8 Kd7 14.Be6! Ke6 15.Qd8 Bb7 16.Qd4 (16.Qd4 Bd6 17.Qc4 Kd7 18.e5 Bg2 19.Qg4 Nf5 20.Qg2+-) 1–0. woschkat (2200) – calden, net–chess.com, 2001.

4.a3 e6 5.ab4 Qh4 6.c3 (6.Ra4 Qd8+-) 6...Bd7 (6...Qf6 7.Nf3+-) 7.Nf3 Qc4 (7...Qd8 8.e3+-) 8.e3 (better 8.Nd4 Bb4 9.e3+-) 8...Qf1 (8...Qg4+-) 9.Kf1 (9.Rf1 Bb5 10.d3 Nf6+-) 9...Bb5 10.d3 0-0-0 (10...Nf6 11.Ne5+-) 11.Ra7 d4 (11...Kb8 12.Ra5 Be8 13.Nbd2+-) 12.Ra8 Kd7 13.Ne5 Ke7 14.Rd8 Kd8 15.Nf7 Ke7 16.Nh8 Bd3 17.Qd3 1–0. DEFFM – GuestVGWV, freechess.org, 2018.

4.a3+- e6 5.e3 c6 (5...Nf6 6.Nf3+-) 6.ab4 cb5 7.Bb5 Bd7 8.Bd7 Qd7 9.f4 f6 10.c3 Nh6 11.h4 (11.Nf3 Bd6+-) 11...e5 12.fe5 fe5 13.Nf3 e4 (13...Bd6 14.e4+-) 14.Nd4 (14.Ne5 Qd6 15.c4 dc4 16.Qa4 Kd8+-) 14...Bd6 15.0-0 0-0-0 (15...a6+-) 16.Ra7 Rhf8 (16...Kb8 17.Qa4 Qa4 18.Ra4+-) 17.Ra8 Bb8 18.Rf4 Rf4 19.ef4 Qc7 (19...Rf8 20.c4 Qd6 21.Ne2+-) 20.Ne6 (better is 20.g3!? Qf7+-) 20...Qb6 21.Nc5 Kc7 (21...Qf6 22.g3 Qg6+-) 22.c4! Qb4 (22...dc4 23.Be5) 23.Ne6 Kc8 (23...Kd7 24.Nd8 Qb2 25.Rb8+-) 24.Be5 Qb6 25.c5 Qe6 26.Qa4 Nf7 27.Rb8 1–0. marus2 – busybee20, internet, 2001.

4.a3+- Bf5 5.ab4 c6 (5...f6 6.Ra4+-) 6.bc6 (6.e3 e6+-) 6...bc6 7.e3 a5 (7...Qb8 8.Ra4+-) 8.ba5 Ra5 9.c4 (9.Ra5 Qa5 10.Nf3 Qb6+-) 9...Ra1 10.Ba1 Bb1 (10...e6 11.Nf3+-) 11.Qb1 e5 (11...e6 12.cd5 ed5 13.Qc2+-) 12.Be5 Nf6 (12...Ne7 13.Nf3+-) 13.cd5 (13.Nf3 Bd6+-) 13...Qd5 (13...Nd5 14.Qb7 Qd7 15.Qa8 Ke7 16.e4+-) 14.Qb8 (14.Bf6 gf6 15.Nf3 Bd6+-) 14...Ke7 15.Qc7 Ke6 (15...Nd7 16.Nf3 Ke8 17.Be2+-) 16.Nf3 (better 16.Nh3 Qd7 17.Ng5 Ke7 18.Bd6 Ke8 19.Qb8 Qd8 20.Qb7+-) 16...Ne4 (16...Bc5+-) 17.Qc8 (better 17.Nd4 Qd4 18.ed4 Nd6+-) 17...Ke7 18.Qc7 (better 18.Nd4 f5 19.Nc6 Kf7+-) 18...Qd7?? (18...Ke6 19.Nd4 Qd4 20.ed4 f6 21.Bc4 Kf5 22.Qd7 Kg5 23.h4 Kh6 24.Bf4 g5 25.hg5 Kg6 26.Bf7 Kg7 27.Be8 Be7 28.Qe7 Kg8 29.Qf7) 19.Qb8 f6 20.Bc3 (20.Bf4 Nd6+-) 20...Nc3 21.dc3 Kf7 (21...Qd6 22.Qa7 Qd7 23.Qa6+-) 22.Bc4 Kg6 (22...Ke7 23.Nd4 g6+-) 23.Qg3 Kf5 (23...Qg4 24.Qg4 Kh6 25.Qf4 Kh5 26.g4 Kg6 27.Nh4) 24.Nd4 (24.Nh4 Ke4 25.Qf4) 24...Ke4 (24...Qd4 25.cd4 Bb4 26.Ke2 g5 27.Bf7 Bd6 28.Qf3 Bf4 29.g4) 25.Qf4 1–0. GuestPRXR – GuestSNJS, freechess.org, 2016.

4.a3+- Nf6 5.ab4 e5 6.Be5 Bb4 7.e3 Bf5 8.Nf3 Bg4 (8...Qe7 9.Nc3 Be4 10.Bd4+-) 9.Be2 (better is 9.Ra4!? Be7 10.b6 Bf3 11.Qf3 cb6 12.Bb5 Kf8+-) 9...Qe7 10.0-0 (better is 10.Bd4+-) 10...Bf3+/- 11.Bf6 Qf6 12.Bf3 Qa1 13.Bd5 0-0-0? (13...0-0 14.Bb7 Rab8 15.Qf3+/-) 14.Qf3?? (better is 14.Qg4 Kb8 15.Qb4 Rd5 16.Nc3 Qf1 17.Kf1 Rd2 18.Qe7+-) 14...b6?? (better is 14...Qf6 15.Bb7 Kb8 16.Qf6 gf6+/-) 15.Bb7+- Kb8 (15...Kd7 16.Qf7 Kd6+-) 16.Ba6 (16.Ba6 Qa6 17.ba6+-) 1–0. Fournier,Frederic – Necromanser, Active, 2004.

4.a4 Nf6? 5.c3+- e6 (5...a5 6.Nf3+-) 6.Nf3 (better 6.cb4 Bb4 7.Nf3+-) 6...d4? (6...c5+-) 7.cb4 Bb4 8.Bd4 Ne4 (8...Bd7 9.Nc3+-) 9.Qc2 f5 10.Bg7 Rg8 11.Be5 Qd5 (11...Bd7 12.Nc3 Bc3 13.Bc3+-) 12.Nc3 Qc5 (12...Nc3 13.Bc3 Qc5 14.Rc1 Bc3 15.Qc3 Qc3 16.Rc3+-) 13.Bd4 Qd6 (13...Qf8 14.Ne4 fe4 15.Qe4+-) 14.Ne4 fe4 15.Qe4 Ba5 (15...Qe7 16.g3+-) 16.Qh7 Rf8 (16...Qf8 17.Ne5 Bb6 18.e3 Bd4 19.ed4+-) 17.Qh5 Kd7 (17...Kd8 18.Bc5 Qf4+-) 18.Bc5 Qf4 19.Ra3 Qe4 20.Ne5 Kd8 (20...Qe5 21.Qh7 Qg7 22.Qg7 Rf7 23.Qf7 Kd8 24.Qe7) 21.Qg5 Ke8 (21...Rf6 22.Qf6 Ke8 23.Qe7) 22.Qe7 1–0. Pierre – InGuest236, internet, 2020.

4.d4 Bf5 5.Na3 e6 (5...Nf6 6.c3 A) 6...e6 7.f3 Nh5 (7...h6 8.Qb3 a5 9.cb4 Bb4 10.Bc3 Bd6 11.Nh3 a4; 7...a6 8.Qb3 a5 9.cb4 Bb4 10.Bc3 Qd6 11.Nc2 Bc3; 7...a5 8.Nh3 Bd6 9.cb4 ab4 10.Nc2 0-0 11.e3 h6) 8.g3 Qf6 (8...Bd6 9.cb4 Bb4 10.Kf2 0-0 11.Nh3 Qf6) 9.Bh3 (9.Qd2 a5 10.Nh3 Bg6 11.Bg2 Bd6) 9...a5 (9...Bg6 10.Bg4 Bd6 11.cb4 Bb4) 10.cb4 Bb4 11.Kf1 Bg6; B) 6...e5 7.de5 (7.Nf3 e4 8.Nd2 Nd3 9.ed3 ed3 10.f3 Bd6 11.Kf2 0-0) 7...Ne4 8.Nf3 Bc5 9.e3 Qe7 10.Qc1 a6 11.Nb1 0-0) 6.c3 Nf6 7.f3 Bd6 (7...h6 8.Nh3+/- (8.cb4 Bb4 9.Kf2 Nh5 10.g3 0-0) 8...c5 9.g4 Ng4 10.fg4 Qh4; 7...a5 8.cb4 Bb4 9.Kf2 Nh5 10.g3 0-0) 8.cb4 Bb4 9.Kf2 Ba3? (better is 9...Nh5+/- 10.g3 0-0) 10.Ba3+- c6 (10...a6 11.ba6 Ra6+-) 11.bc6 bc6 12.Qa4 Rb8 (12...Qd7 13.g4 Bg6 14.Nh3+-) 13.Rc1 Qb6 (13...Qd7+-) 14.Rc6 Qb1 (14...Qb5 15.Rc8! Kd7 16.Qb5 Rb5 17.Rh8 Ra5+-) 15.Rc8 1–0. Anonymous – Anonymous, internet, 2011.

4.e3 Bd7? 5.Ba3 (5.a3!? Nc2 6.Qc2 Nf6+-) 5...e5 6.c3 Nd3 (6...a5 7.cb4 ab4+-) 7.Bd3 g6 (7...Ba3 8.Na3 e4 9.Bf1+-) 8.Bf8 Kf8 9.Nf3?? (better is 9.Bf1+-) 9...e4+/- 10.Ne5 (better is 10.Qb3 Nf6 11.Be2 ef3 12.Bf3+/-) 10...Qf6?? (better is 10...ed3 11.Qa4 Nf6 12.Nd3 Kg7+=) 11.Nd7+- Ke7 12.Nf6 Kf6 13.Bc2 Ne7 14.0-0 (14.f3 ef3 15.Qf3 Ke6+-) 14...a6 15.f3 Ke5 16.d4 (16.fe4!? f5 17.ef5 gf5+-) 16...Kd6 17.fe4 ab5 18.ed5 (18.Rf7 Ke6 19.Qf1 Kd7 20.ed5 b4 21.Qb5 Kd8+-) 18...Nd5 19.Rf7 Ne3 20.Qe2 (20.Qf3 Nd5 21.Bb3 Kc6 22.Qd5 Kb6 23.Qc5 Ka6 24.a4 b4 25.Bc4 b5 26.ab5 Kb7 27.Qc7) 20...Nc2 21.Qe7 (21.Qe5 Kc6 22.Qc5) 21...Kd5 22.Qe5 Kc4 23.Rc7 (23.Qe2 Kd5 24.Rd7 Kc6 25.Qe6) 23...Kd3 24.Qg3 (24.Re7 Ne3 25.Qe3 Kc4 26.Nd2 Kd5 27.Qe6) 24...Ne3 Black threatens to counter with Rhe8 25.Na3! Rac8 (25...Ra3 26.Qe5) 26.Rd1 Ke4 27.Re7 (27.Qf3) 27...Kd5 (27...Kf5 28.h4 Nd1 29.Qf3) 28.Qe5 Kc6 29.Qc5 1–0. guest343 – guest516, ICC, 1999.

4.e3 e6 5.a3 Nc2 6.Qc2 a6 (6...Nf6 7.Nf3+- (7.Be5 Bd6 8.Nf3 Be5 9.Ne5 d4 10.Bc4 Qd6+-) 7...Bd7 8.Be2 Rc8 9.Ne5 Bd6 10.Nd7 Qd7+-; 6...Bd7 A) 7.Nc3 Nf6 (7...Rc8 8.Nf3 Nf6 9.e4 de4 10.Ne5 Be7+-) 8.Nf3 Rc8 9.Be2 c6 10.bc6 Bc6+-; B) 7.Nf3 Nf6 8.Ne5 Bd6 9.Bd3 Rc8 10.0-0 c5+-) 7.ba6 (7.Be5 Bd7 8.ba6 ba6 9.Bd3 Qg5 10.Bg3 Bd6+-) 7...Ra6 (7...ba6 8.Nf3 (8.Be5+- c5 9.d4 c4 10.Be2 Ne7+-) 8...c5 9.Be2 Nf6 10.0-0 Bd6+-) 8.Ba6 ba6 9.Nf3 (9.Be5 c5+- 10.Nf3 f6+-) 9...Bd6 (9...f6+- 10.Nc3 Bd6+-) 10.Bg7 e5+- 1–0. pierre – stoswag, internet, 2010.

4.e3 Bf5 5.d3+- e6 (5...d4!? A) 6.e4 Be6 (6...Bg4 7.Qd2 c5 8.a3 Nd5 9.ed5 Qd5 10.c4 Qh5) 7.a3 Na2 8.Nf3 Nc3 9.Nc3 dc3 10.Bc3 Nf6; B) 6.a3 Bg4 (6...Qd6 7.e4 Bg4 8.Qd2 e5 9.Qb4 Qb4 10.ab4 Bb4) 7.Be2 (7.Qg4?! Nc2 8.Kd2 Nf6+/- 9.Qf3 Na1 10.Ba1 e5) 7...Be2 8.Ne2+- Nd5 9.e4 Nb6 10.Bd4 a6) 6.a3 (6.Nf3 d4 (6...a6 7.a3 ab5 8.ab4 Bb4 9.c3 Be7 10.Nbd2 Nf6) 7.e4 Bg4 8.a3 Bf3 9.gf3 Nf6 10.ab4 Bb4; 6.c3 d4 (6...Nf6 7.cb4 Bb4 8.Nd2 0-0 9.Ngf3 a6 10.ba6 Ra6) 7.cb4 Bb4 8.Nd2 de3 9.fe3 Qh4 10.g3 Qh6) 6...Nc2 (6...Qd7 7.ab4 Bb4 8.Nc3+- Qb5 9.Nf3 Nf6 10.Be2 Qc6; 6...Nf6 7.Nf3 a6 8.ab4 ab5 9.Ra8 Qa8 10.Bf6 gf6) 7.Qc2 Nf6 (7...a6 8.Nc3+- ab5 9.Nb5 c6 10.Nd4 Bg6) 8.Nd2 (better is 8.Nf3+- Bd6 9.Be2 0-0 10.0-0 a6) 8...Bc5?? (8...a6+- 9.ba6 Ra6 10.e4 Bg6) 9.Qc5 b6 (9...Qd6 10.Rc1 Qc5 11.Rc5+-) 10.Qc6 Nd7 (10...Ke7 11.a4 Kf8 12.Ngf3+-) 11.Bg7 Rg8 12.Be5 1–0. wyssy – ante, internet, 2011.

4.Nf3 e6? 5.e3 (5.a3 Nf6+-) 5...Bd7? (better is 5...d4 6.Bd4 c5+/-) 6.a3+- Bb5 (6...Nc2 7.Qc2 Nf6 8.Be2+-) 7.Bb5 (7.ab4?! Bf1 8.Rf1 Nf6+-) 7...Nc6 8.0-0 a6 9.Bc6 bc6 10.Nc3 Nf6 11.d3 Rb8 12.Rb1 Bd6 13.Qd2 0-0 14.a4 h6 15.Ba1 Qd7 16.e4 d4 17.Nd4 c5 (17...Bh2 18.Kh2 Qd4 19.Rb8 Rb8 20.Qe2+-) 18.Nf3 Rb4 (18...Ng4 19.Qe2 Ne5 20.Nd2+-) 19.Rb4 (better is 19.e5 Ng4 20.ed6 cd6 21.d4+-) 19...cb4 20.Ne2 White intends e5 20...Qa4 (20...Ne8 21.Bb2+-) 21.Ned4 (better is 21.e5 Nd7 22.ed6 cd6 23.Bb2+-) 21...c5 22.Nb3 Rb8?? (22...Nd7+-) 23.e5 Ne4 24.de4 Be7 25.Rd1 Rd8 26.Qe2 Rd1 27.Qd1 c4 28.Nbd2 c3 29.Nb3 Qa2 30.Nfd4 a5 (30...Bf8 31.Nc6+-) 31.Nc6 Bg5 32.g3 a4 33.Nb4 (better is 33.Nbd4+-) 33...ab3 (33...Qa3 34.Bc3 ab3 35.cb3 Qa8+-) 34.Na2 ba2 35.Bc3 Be7 36.Ba1 (36.Qa1 g6+-) 36...Ba3 37.f4 g6 38.c4 (38.Bd4 h5+-) 38...h5 1–0. Fournier,Frederic (1895) – entiendomad (1670), Active, 2005.

4.Nf3 Bf5 5.d3 d4 6.Bd4 +/-.

5.Qc2 a6 6.e3 ab5 7.Bb5 Bd7 8.Bd7 Qd7 9.Nf3 e6 10.0-0 Bd6?? (10...f6+-) 11.Bg7 Qc6 (11...e5 12.d3+-) 12.Qc6 (12.Bh8? Qc2 13.Nc3 Ne7-/+) 12...bc6 13.Bh8 Ke7 14.Bb2 Nf6 15.Nc3 Ng4 16.a4 Rg8 (16...Ra5 17.Rfb1+-) 17.h3 Nh2 (17...Nf6 18.a5+-) 18.Nh2 Bh2 19.Kh2 Rg2 1–0. Fournier,Frederic (1810) – ROCKDEBASE, rated blitz game, 2002.

5.Qc2 a6 6.e3 e5 7.Be5 Qe7 (7...Nf6 8.Bc7 Bf5 9.Bd8 Bc2 10.Bf6 gf6 11.ba6 ba6 12.Ne2+-) 8.Nf3 Bg4 (8...ab5 9.Bb5 Bd7 10.Be2+-) 9.ba6 ba6 (9...c6+-) 10.Qc6 Kd8 11.Qa8 Kd7 12.Ba6 Bf3 13.Qc8 Kc6 14.Nc3 (14.Qb7 Kd7 15.Qc7 Ke6 16.Bc8 Qd7 17.Bd7 Ke7 18.Bf5 Ke8 19.Qd7) 14...Bg2 (14...Be2 15.Bb7 Kb6 16.Bd4 Qc5 17.Rb1 Ka5 18.Bc5 Bc5 19.Qc7 Bb6 20.Qb6) 15.Bb5 Kc5 16.d4 Kb6 17.Qa6 1–0. GuestNKRJ – GuestSPDF, freechess.org, 2020.

5.Qc2 d4 6.Nf3 c5 (6...d3 7.Qd3 Qd3 8.ed3 Bd7+-) 7.bc6 bc6 8.Bd4 Nf6 9.e3 e6 10.Ne5 Be7 (10...Bd7 11.Bd3+- (11.Nc6?! Rc8 12.Nd8 Rc2+-)) 11.Nc6 Qc7 12.Bb5 (12.Nc3 Bb7 13.Ne7 Qe7 14.Bb5 Kf8+-) 12...0-0 (12...Bd7 13.0-0+-) 13.Ne7 Qe7 14.Bc5 (better is 14.Qc5 Qd8+-) 14...Qd8 (14...Qc7 15.Qc4 Rd8 16.Bd4 Qc4 17.Bc4+-) 15.Bf8 (15.Bc6!? Ba6 16.Bf8 Rc8+-) 15...Qf8 16.0-0 Bb7 17.d4 Qd6 18.Qc5 Qd8 19.Nd2 Rc8 20.Qg5 h6 21.Qg3 (21.Qe5 Rc2 22.Rfd1 a6+-) 21...Nh5 (21...Qa5 22.Nc4 Qb5 23.Nd6+-) 22.Qg4 g6 (22...Nf6 23.Qe2+-) 23.Bd3 Qf6 (23...Rc3 24.Bc4+-) 24.Be4 Ba6 25.Rfc1 Rf8 (25...Qe7 26.Rc8 Bc8 27.Rc1+-) 26.f4 (26.Rc7 Qd8 27.Rac1 Nf6+-) 26...Qg7 (26...Rd8 27.Rab1+-) 27.Rc7 Nf6 28.Qf3 Ne4 29.Ne4 Rb8 (29...Bd3 30.Nf2 Bb5 31.a4+-) 30.Rac1 Bb7 (30...Rb6 31.Nc5 Qf8 32.Na6 Ra6 33.Rc8 Qc8 34.Rc8 Kg7 35.Qa8 Rd6 36.Qb8 Rd5 37.e4 g5 38.Rh8 e5 39.Qf8 Kf6 40.Rh6) 31.Rb1 Qf8 32.Rbb7 Rb7 33.Rb7 Qa3 34.Nf6 Kg7 35.Ne8 Kf8 36.Nf6 Qc1?? (36...Kg7 37.Nd7 Kg8+-) 37.Kf2+- Qd2 38.Qe2 Qa5 (38...Qe2 39.Ke2 a5 40.Ng4+-) 39.Qb2 (better is 39.Qc4 Qd8 40.Rb8 Qb8 41.Nd7 Kg7 42.Nb8 g5+-) 39...a6 40.Qb4 (40.Nd7 Kg7 41.d5 Qc3 42.Qc3 e5 43.Qe5 Kh7 44.Nf6 Kg7 45.Ne8 Kh7 46.Qg7) 40...Qb4 41.Rb4 1–0. Fournier,Frederic (1995) – Karna (1735), Echecs21, 2003.

5.Qc2 Bd7 6.e3 Bb5?? 7.Bb5 c6 8.Bc6! bc6 9.Qc6 Qd7 10.Qa8 Qd8 11.Qa7 Nf6 12.Qa4 Nd7 13.Nf3 e6 14.0-0 Be7 (14...f6 15.Rc1+-) 15.Bg7 Rg8 16.Bh6 f6 17.Nc3 Kf7 18.e4 (better 18.Rfb1 Ne5 19.Ne5 fe5+-) 18...Rg6 (18...Nc5 19.Qc6 de4 20.Ne4+-) 19.Be3 (better 19.ed5 e5 20.Be3 Kg8+-) 19...Qg8 20.g3 (better 20.Qd7 de4 21.Nd4 e5+-) 20...f5 21.ef5 Rg7 22.fe6 (better 22.Qd7!? Qd8 23.fe6 Kg8 24.Qd8 Bd8 25.Nd5 h6+-) 22...Ke6 23.Nd4 Kd6 24.Qa6 (24.Qc6 Ke5 25.f4) 24...Ke5 25.f4 1–0. GuestGKNQ – GuestGHMV, freechess.org, 2017.

5.Qc2 Bd7 6.e3 Nf6 7.Nf3 Ne4 (7...e6 8.Ne5+-) 8.Bd3 Bf5 (8...Nd6 9.Nc3+-) 9.Nh4 (9.Ne5 Be6+-) 9...Be6 (9...Bd7 10.Be4 de4 11.Qe4 Bb5 12.Qb7+-) 10.0-0 Qd7 (10...Bd7 11.Rc1+-) 11.Rc1 0-0-0 (11...f6 12.a4+-) 12.Be4 de4 13.Be5 (Worse is 13.Qe4 Qb5 14.Bd4 Kb8+-) 13...c6 14.Qa4 Qd5 (14...Bd5 15.Qa7 Qe6+-) 15.bc6 Qe5 (15...Rd6 16.Bd6 Qd6+-) 16.Qa7 Rd7 (16...Qb5 17.cb7 Kd7 18.b8Q Ke8 19.Qb5 Bd7 20.Qad7 Rd7 21.Rc8) 17.cb7 Kd8 18.Rc8 1–0. lucya (2135) – pdox40, GameColony.com, 2002.

5.Qc2 e5 6.Be5 f6 7.Bc7 Qd7 8.e3 Ne7 9.d4 Nf5 10.Bd3 Bd6 11.Bf5 Qb5 12.Bd6 Bf5 13.Qf5 1–0. Trkn – Alekehine, itsyourturn.com, 2000.

5.Qc2 e6 6.e3 Nf6 7.Nf3 Bd6 8.Bd3 0-0 9.0-0 Re8 10.Ne5 Be5 (10...g6 11.f4+-) 11.Be5 c5 (11...Bd7 12.f3+- (worse 12.Qc7 Qc7 13.Bc7 Rac8+-)) 12.bc6 bc6 13.Qc6 Bd7 14.Qc2 Ng4 15.Bh7 (15.Bh7 Kh8 16.Bc7+-) 1–0. GuestDSJJ – GuestGDZW, freechess.org, 2019.

5.Qc2 e6 6.Nf3 Nf6 7.Nc3 Bd6 8.e4 de4 9.Ne4 Ne4 10.Qe4 0-0 11.Bc4 f5 (11...Re8 12.0-0+-) 12.Qe3 (12.Be6?! Kh8 13.Qd4 Qe7 14.Qg7 Qg7 15.Bg7 Kg7+=) 12...Re8 (12...Qe8 13.Ng5+-) 13.0-0 Kh8 (13...Qe7 14.Ne5+-) 14.Rfe1 Qe7 (14...Re7 15.Ne5+-) 15.Qh6 Qf7 16.Ng5 Qg6 17.Qg6 hg6 18.Ne6 Be6 19.Be6 Kh7 20.Bd5 Rab8 (20...Re1 21.Re1 Rb8 22.Re3+-) 21.Re8 Re8 22.Bb7 g5 23.Kf1 g4 (23...Bh2 24.g3 f4 25.g4+-) 24.Bd4 Rb8 (24...Bf4 25.Ba7 Bd2 26.Bc6+-) 25.Bc6 Rd8 26.Ba7 Be5 27.d4 Bd4 (27...Bf4 28.a4 Rh8 29.Bc5+-) 28.Bd4 Rd4 29.a4 g3 30.fg3 Kg6 31.a5 f4 32.gf4 Kf5 33.a6 Rf4 34.Ke2 Ke5 35.a7 Rf8 36.Ra4 Kf5 37.Re4 g5 38.Re8 Re8 39.Be8 g4 40.a8Q Kf4 (40...Ke5 41.Qc6 Kd4 42.Bf7 Ke5 43.Qe6 Kf4 44.g3 Kg5 45.Qg6) 41.Qd5 g3 42.Bd7 gh2 43.Qf5 Kg3 44.Qg4 1–0. Woelfelschneider,Peter – Wicklund, 1999.

5.Qc2 Nf6 6.e3 Ne4 7.Nf3 e6 8.Be2 Bd6 9.0-0 (Better is 9.d3 Nf6 10.e4+-) 9...Qf6?? (9...0-0 10.Rc1+-) 10.Nc3 (Better is 10.Bf6 Nf6 11.d4 Bd7+-) 10...Be5 (10...Nc3 11.dc3 Qg6+-) 11.Ne5 (Better is 11.Ne4 Bh2 12.Nh2 Qg6+-) 11...Qe5 12.Ne4 Qe4 13.Qe4 de4 14.d3 (14.Rac1!? 0-0 15.Rc7 Rd8+-) 14...ed3 15.Bd3 0-0 16.Rac1 b6 17.Be4 Rb8 18.Rc7 f6 19.Rfc1 e5 20.Bd5 Kh8 21.Rf7 Rf7 22.Bf7 Bf5 23.Rc7 Rd8 24.h3 h6 25.Ra7 Rd2 26.Bc3 Rc2 27.Bb4 Rc1 28.Kh2 Be4 29.f3 Bd3 30.e4 Bb5 31.Bg6 Rc8 32.Bf8 Rf8-/+ 33.a4 Bc4 34.Rc7 Ba6? 35.Rc6-/+ Rb8 36.a5!+- b5?? 37.Ra6 b4 38.Rb6 Rb6 39.ab6 b3 40.b7 b2 41.b8Q 1–0. kamera – NN, GameColony.com, 2002.

5.Qc2 Nf6 6.e3 e6 7.Bd3 Bd6 8.Nf3 0-0 9.0-0 Bd7 (9...a6 10.ba6 ba6 11.Be5+-) 10.Ne5 Be5 (10...a6 11.ba6 ba6 12.Nd7 Qd7 13.Bf6 gf6 14.Bh7 Kg7 15.Bd3+-) 11.Be5 Ng4 (11...c6 12.bc6 Bc6 13.Nc3+-) 12.Bh7 (better 12.Bc7!? Qf6 13.Nc3 Rfc8+-) 12...Kh8 13.Bc7 Qc8 (13...Qf6 14.d4 Bb5+-) 14.Bd3 a6 (14...f6 15.f4+-) 15.ba6 ba6 16.Rc1 (16.f3 Nh6+-) 16...Qb7 (16...Bb5 17.Bb5 ab5 18.Qb2+-) 17.Bg3 (17.Bd6 Rfc8 18.Nc3 Bc6+-) 17...e5 (17...Bb5 18.Nc3+-) 18.f3 (better 18.Nc3 d4 19.Rab1 Qc8 20.ed4 ed4+-) 18...Nf6 (18...e4 19.fe4 Rfc8 20.Nc3+-) 19.Be5 Be6 (19...Rfe8 20.Bd4+-) 20.Qa4 Bd7 (20...Rfc8 21.Qh4 Kg8+-) 21.Qh4 Kg8 22.Bf6 gf6 (22...Bf5 23.Bf5 Rfc8 24.Qh7 Kf8 25.Qh8) 23.Qh7 1–0. DEFFM – GuestXZXZ, freechess.org, 2019.

5.Qc2 Nf6 6.e3 e6 7.Nf3 Bd6 8.Be2 0-0 9.Bf6 Qf6 10.Nc3 e5 (10...Qe7+-) 11.Nd5 Qe6 (11...Qd8 12.d4+-) 12.Bc4 (better 12.Nc7!? Bc7 13.Qc7 e4+-) 12...Qg4 (12...e4 13.Nd4 Qg6 14.Nc3 Qg2 15.Qe4 Qe4 16.Ne4+-) 13.Kf1 (13.h3 Qh5+-) 13...e4 (13...c6 14.h3 Qh5 15.bc6 bc6 16.Nb4+-) 14.h3 (14.Nd4 Qh4+-) 14...Qf5 (14...Qg6 15.Nd4+-) 15.Nd4 Qg6 (15...Qe5 16.Nc3+-) 16.Nf4 (better 16.f3!? Re8+-) 16...Bf4 17.ef4 Be6? (17...Rd8 18.Nb3 c6 19.bc6 Qc6 20.Rc1+-) 18.Ne6 (better 18.Be6!? fe6 19.Qc7 Qf6+-) 18...fe6 19.Re1 (better 19.g3 Rad8 20.Re1+-) 19...Kh8 (19...Rf4 20.d3+-) 20.Re4 (20.Qe4 Qf6+-) 20...Qf6 (20...Rf4 21.Bd3 Qf6 22.Rf4 Qf4 23.Bh7+-) 21.g3 (21.Qc3 Qg6 22.Re6 Qb1 23.Re1 Qg6+-) 21...e5 (21...Qf5 22.d3+-) 22.Kg2 (22.Re5!? Rae8 23.Qe4 Re5 24.Qe5 Qd8+-) 22...ef4 23.Rf4 Qe7 (23...Qb6 24.Qe4 Rf4 25.Qf4+-) 24.Qe4 Qa3 (24...Qc5+-) 25.Rh4 (better 25.Bd3 Qd3 26.Rf8 Rf8 27.Qd3 h6+-) 25...h6 (25...Qf3 26.Qf3 Rf3 27.Kf3 c6+-) 26.Qd4 (better 26.Bd3 Qd3 27.Qd3+-) 26...Qf3 27.Kh2 (better 27.Kg1 Rf6 28.Bd5+-) 27...Rad8?? (better 27...Qf2 28.Qf2 Rf2 29.Kg1 Rd2+-) 28.Rh6 1–0. GuestNTSW – GuestTSXB, freechess.org, 2017.

5.Qc2 Nf6 6.e3 Bg4 7.Be2 Qd7 (7...Be2 8.Ne2 e6 9.Be5+-) 8.h3 (8.Nf3 Bf5 9.d3 e6+-) 8...Be2 9.Ne2 (9.Ke2?! Qb5 10.d3 Nd7+-) 9...Qb5 10.Nbc3 (10.Bf6!? ef6 11.Qc7 Qc6+-) 10...Qd7 11.0-0 e5 12.Qa4 (12.Na2 Qb5 13.Ng3 Nd7+-) 12...c6 13.d4 Bd6 (13...e4 14.Qc2+-) 14.de5 Be5 15.f4 Bc7 16.Nd4 0-0 17.Rf3 b5 18.Qc2 Rae8 (18...Bb6 19.Nce2 Rfe8 20.Rc1+- (20.Nc6?! Be3 21.Kh2 Rac8+-)) 19.Raf1 (19.Nd1 Ne4 20.Qc6 Qc6 21.Nc6 Bb6+-) 19...Ne4? (better 19...Bb6+-) 20.Ne4+- Re4 21.Rg3 (21.Nc6 Rc4 22.Rg3 f6 (worse 22...Rc2 23.Rg7 Kh8 24.Rf7 Rb2 25.Rd7+-) 23.Ne7 Qe7-/+; 21.Qc6?! Qc6 22.Nc6 Bb6+-) 21...Rfe8 (21...f6 22.Rc1+- (22.Nc6 Rc4 23.Ne7 Qe7-/+)) 22.Nb3 (worse 22.Nc6 f6 23.Bf6 g6+-) 22...f6 23.Nc5 Rc4?? (23...Qd6 24.Ne4 Re4+-) 24.Nd7 (better 24.Qc4! bc4 25.Nd7 Kf7+-) 24...Rc2 25.Nf6 Kf7 26.Ne8 Ke8 27.Bg7 (27.Rg7 Bb6 28.Bd4 Kf8 29.Rh7 c5+-) 27...Ra2 (27...Bd6 28.Bd4 a5 29.Rg8 Kf7 30.Rg7 Ke8 31.f5 Ba3 32.f6+-) 28.Bd4 Ra3 29.Rc1 Bf4 (29...Ra6+-) 30.Rg8 Kf7 31.Rg7 Kf8 32.ef4 (32.ef4 Ra4 33.Be5+-) 1–0. GuestVWGW – guestmann, freechess.org, 2017.

5.Qc2 Nf6 6.e3 Bg4 7.Nf3 e6 8.Be2 Bd6 9.0-0 0-0 10.h3 Bf5 11.d3 Nh5? (11...Bg6 12.Ne5+-) 12.Nd4 (Better is 12.g4 Bg6 13.gh5 Bh5 14.Kh1+-) 12...Bg6 13.Bh5 (13.Nd2 e5 14.Bh5 Bh5+-) 13...Bh5 14.Ne2 f5 15.Nf4 Bf4 16.ef4 g5 17.Be5 gf4 18.Bf4 Rf6? 19.Be5 Rg6 20.Kh2 Qg5 21.f3 Rf8 22.f4 Qg3 23.Kh1 Bg4 24.Rf2 Bh3+/- 25.gh3?? Qg1# 0–1. Scirocco – matta, Live Game Caissa's Web, 2004.

5.Qc2 Nf6 6.e3 Bg4 7.Bf6 ef6 8.d4 +-.

5.Qc2 Nf6 6.f3 g6 7.Bf6 (7.e4 Bg7+-) 7...ef6 8.e3 Bg7 9.Ne2 0-0 10.Nd4 c5? (better 10...Re8+-) 11.bc6 bc6 (11...f5 12.cb7 Bb7 13.Nc3+-) 12.Nc6 (12.Qc6 Rb8+-) 12...Qd6 13.Nd4 f5 14.Qc3 Bb7 (14...f4 15.Qd3+-) 15.Be2 (15.Qb4!? Qb6+-) 15...Rac8 16.Qb2 f4 (16...Ba6 17.Ba6 Bd4 18.ed4 (worse 18.Qd4 Rc1 19.Kf2 Rh1+-) 18...Qa6 19.Nc3+-) 17.0-0 (better 17.Qb7 Rc1 18.Bd1 fe3 19.de3 Bd4 20.ed4 Re8 21.Kf2+=) 17...fe3 18.de3 (18.Qb7? Bd4 19.de3 Ba1–+) 18...Qd8?? (18...Qe7 19.Qd2 Rfe8 20.Rd1+-) 19.Nd2 (better 19.Qb7 Re8 20.Ra2 Re3 21.Nb5+- (worse 21.Qa7 Re7 22.Qa4 Qb6+-)) 19...Ba8? (19...Qe7 20.e4!+-) 20.Rab1 (20.Qb3 Qe7 21.Bb5 Rc5+-) 20...Qg5? (better 20...Qe7 21.e4! de4+-) 21.f4 Qe7 22.Qb3 (22.Rf3 f5+-) 22...Rb8?? (better 22...Bd4 23.ed4 Qe2+=) 23.Qd3+- (23.Qb8?! Qe3 24.Kh1 Bd4+-) 23...Rb1 24.Rb1 Re8 25.Nf1 Qc5 26.Rb5 Qd6 27.Rb4 a5 (27...Rc8 28.Qa6 Qa6 29.Ba6+-) 28.Nb5 (28.Ra4 Bd4 29.Rd4 Rc8+-) 28...Qc6 29.Nd4 Qc7?? (29...Qd6 30.Ra4 Bd4 31.Rd4 Rc8+-) 30.Ra4+- Bc6 (30...Re4 31.Bf3 Rd4 32.Rd4 (32.ed4?! Bc6 33.Qb3 Ba4 34.Qa4 Qf4+-) 32...Bd4 33.Qd4+-) 31.Nc6 Qc6 32.Ra5 Rd8 33.Qb5 (33.Rb5 d4+-) 33…Qc1 0–1. GuestFTPC – GuestGKMW, freechess.org, 2017.

5.Qc2 Nf6 6.Nf3 +-.

5.Qc2 g6?? 6.Bh8 Bf5 7.Qa4 e5 (7...f6 8.g4 Bd7 9.Bg2+-) 8.Be5 a5 (8...Bd6 9.Bd6 Qd6 10.Nf3+-) 9.ba6 (9.Nc3 f6 10.Bd4 Kf7+-) 9...c6 10.ab7 (10.Qd4 ba6 11.Nc3 f6+-) 10...Ra4 11.b8Q Qb8 12.Bb8 Rb4 (12...Bg7 13.Nc3 Ra8+-) 13.ab4 Bb4 14.Ra8 (14.Ra8 Kd7 15.Nc3+-) 1–0. DEFFM – GuestZGQG, freechess.org, 2018.

5.Qc2 g6?? 6.Bh8 Nh6 7.Bb2 Bf5 8.d3 e5 (8...Bd7 9.Qb3+-) 9.Be5 Bd6 10.Bb2 Rc8 11.Nf3 c5 12.e4 de4 13.de4 Be4 (13...Be6 14.Nbd2+-) 14.Qe4 Qe7 15.Nc3 b6 16.0-0-0 Rc7 17.Rd6 f5 18.Qa8 Kf7 (18...Rc8 19.Qc8 Kf7 20.Bc4 Qe6 21.Be6 Kg7 22.Nd5) 19.Bc4 Kg7 (19...Qe6 20.Be6 Kg7 21.Nd5) 20.Ne4 Qf6 21.Bf6 1–0. michaelbuss – UKpottsy, ChessWorld.net, 2009.

5.Qc2 Nh6 6.h3 Bf5 7.Qc1 c5 8.g4 Be4 9.Rh2 d4 10.Bg2 Bg2 11.Rg2+- f5? 12.g5 Nf7 13.g6 hg6 14.Rg6 Ne5+/- 15.Re6 Qd5= 16.Re5 Qe5 17.Nf3?? Qd6 18.h4=+ d3 19.e3?? f4 20.e4?? Qe6–+ 21.Nc3 g5 22.Kd1?? g4 23.Ng5?? Qg6 24.Nd5 Rh4 25.Nf4 Rh1 0–1. riverborne – paintcreek, Live Game Caissa's Web, 2005.

6.Qc1 Qb5 7.e3 Qc6 8.Nf3 Qe6 9.Be2 Qg4 10.0-0 h5 11.Nd4 Qh4 (11...Qg6 12.Nb5 Bh3 13.Bf3+- (13.Nc7?! Kd8 14.Bf3 Kc7+/-)) 12.c4 (12.Nb5 Kd8+-) 12...Qg5 (12...dc4 13.Nb5 Kd8 14.Na7+- (14.Qc4?! Qc4 15.Bc4 a5+-)) 13.cd5 Bh3 14.Bf3 e6 (14...h4 15.Kh1 (15.Qc7?! Bg2 16.Bg2 h3+-) 15...Bg4 16.d6 Bf3 17.Nf3+- (17.gf3?! c5+-)) 15.Qc7 (15.de6 Be6 16.Ne6 fe6 17.Bb7 Rd8 18.Qc7 Ne7+-) 15...Rd8 (15...ed5 16.Qb7 Rd8 17.Ra7+-) 16.de6 fe6 17.Nc6 (better is 17.Qb7 Be7+-) 17...Be7 (17...Bg2 18.h4 Bd6 19.hg5 Bc7 20.Nd8 Bf3 21.Ne6 Kd7 22.Bg7 Ke6 23.Bh8 h4+-) 18.Nd8 Bd8 19.Qg7 (19.Qb7!? Ne7+-) 19...Qg7 20.Bg7 Rh7 21.Be5 Bf5 (21...Bg4 22.Be4 Bf5 23.Bf5 ef5 24.Ra7+-) 22.Nc3 (22.Ra7 Nf6+-) 22...Bd3 (22...a5 23.Ne4 b6 24.Rfb1+-) 23.Be4 Bf1 (23...Be4 24.Ne4 b6 25.Ra6+-) 24.Bh7 Bf6 (24...Bc4 25.Bg8 a5 26.Rb1+-) 25.Bg8 Be5 26.Kf1 a6 27.Be6 Ke7 28.Bc8 b5 29.Ba6 b4 30.Nd5 Kd6 31.Nb4 (better is 31.Ra5 b3 32.Nc3 Bc3 33.dc3 h4+-) 31...Ba1 32.d4 h4 33.Ke2 Bc3 34.Nd3 Kd5 35.Nf4 Ke4 (35...Kd6 36.Ng6 h3 37.g4+-) 36.f3 (36.Bd3) 36...Kf5+- 37.d5 (37.Bc8 Kg5+-) 37...Bb4 (37...Be5 38.g4 hg3 39.hg3+-) 38.Kd3 (38.Nd3!? Bc3+-) 38...Bd6 39.Ne6 Bh2 40.Bc8 Ke5 41.f4 (better is 41.Bb7 Kf5+-) 41...Kd5 42.f5 Ke5 43.Nf4! Bg3 (43...Bf4 44.ef4 Combination) 44.Nh5 (better is 44.Ng6 Kf6 45.e4+-) 44...Bf2 (44...Be1+-) 45.f6 Be1 46.e4 (better is 46.Kc4 Kd6 47.Ng7 Kc7+-) 46...Kd6 (46...Bb4 47.Kc4 Bd2 48.Bf5+-) 47.Kc4 Ba5 (47...Bd2 48.Ng7 Bc1+-) 48.e5! Ke5 49.f7 Ke4 (49...Kd6 50.f8Q Kc7 51.Qc5 Kd8 52.Qc6 Ke7 53.Qf6 Ke8 54.Ng7) 50.f8Q Ke3 51.Qd6 (51.Qf3 Kd2 52.Qd3 Ke1 53.Qe3 Kf1 54.Bh3 Bc3 55.g3) 51...Bd2 (51...Kf2 52.Qd4 Kf1 53.Qd1 Be1 54.Nf4 Kg1 55.Qe1 Kh2 56.g3 hg3 57.Qd2 g2 58.Qg2) 52.Qd5 (52.Qf4 Ke2 53.Bg4 Ke1 54.Qf3 h3 55.Qe2) 52...Be1 (52...Ba5 53.Qf3 Kd2 54.Qd3 Ke1 55.Qe3 Kf1 56.Bh3 Bc3 57.g3) 53.Qf3 Kd2 54.Bf5 (54.Qd3 Kc1 55.Kb3 h3 56.Qc2) 54...Kc1 (54...h3 55.Qd3 Kc1 56.Qc2) 55.Qb3 Bf2 (55...Kd2 56.Qd3 Kc1 57.Qc2) 56.Qc2 1–0. alaamattar (2175) – laure (1870), net–chess.com, 2013.

6.Bc3 Qb5 7.e3 e6?? 8.Bb5 (8...c6 9.Bd3+-) 1–0. fanta5 – RIF, Live Game Caissa's Web, 2005.

6.Bc3 Qb5 7.Nf3 Qb6 8.Bd4 c5 9.Be5 +-.

6.Bc3 Qb5 7.Nf3 h6 8.e4 Qd7 9.ed5 Qd5 10.Be2 Bg4 11.0-0 0-0-0? (better is 11...Nf6+-) 12.Ra7 b6 (12...Kb8 13.Ra5 Qd6 14.Ne5+-) 13.Be5 Bf3 (13...Rd7 14.Nc3 Qc6 15.Bb5 Bf3 16.Bc6 Bc6 17.Qg4+-) 14.Bf3 (better is 14.Rc7 Kb8 15.Re7 Ka8 16.Bf3 Ne7+-) 14...Qe5 15.Bc6 Qd5 16.Ra8# 1–0. MarcosRamos (1685) – Kobold, internet, 2007.

6.Bc3 Qe4 7.e3 Qc4 (7...Bf5 8.d3 Qe6+-) 8.Bc4 Bd7 (8...Bd7 9.Bd5 c6 10.bc6 bc6+-). GuestFTPC – GuestHDPK, freechess.org, 2017.

6.e3?? Qb2-/+ 7.Nc3 e6 8.Rb1 Qa3 9.Nf3 a6 10.ba6 Ra6?? (10...ba6 11.e4+=) 11.Nb5?? (better is 11.Ba6 Qa6 12.Ra1+/-) 11...Qc5 (11...Qe7 12.Ne5-/+) 12.d4+= Qc6 (12...Qe7 13.c4+=) 13.Ne5 Qb6 14.Nc3 (14.Qd2 f6 15.Qc3 Ke7 16.Qb4 Ke8=) 14...Qa5 (14...Bb4 15.Rb3 Qa5-/+) 15.Ba6? (better is 15.Qd2!? Ra8 16.Bb5 c6 17.Nc6 bc6 18.Bc6 Bd7 19.Ba8 Qa8 20.0-0+=) 15...Qc3-/+ 16.Kf1 (16.Qd2 Qd2 17.Kd2 ba6-/+) 16...ba6–+ 17.Rb3 Qa5 18.Nc6 (18.Rb8 Ne7–+) 18...Qa4 19.Qb1?? (19.Na7 Bd7–+) 19...Ne7 (better is 19...Qc6 20.Rb8 Qc4 21.Ke1 Kd7–+) 20.Ne5 f6 21.Nd3 Qc4 (21...Nc6 22.Nb2 Qa5 23.Qd1–+) 22.f3 Nf5 23.Kf2 g6 (23...Bd6 24.Nb2 Qc6 25.c4–+) 24.Rb8 Kd8 25.Nc5 (25.Qb3–+) 25...Bc5 26.dc5 Qc5 27.Re1 (27.Qb3 Ke7 28.Rd1 Rd8–+) 27...Nh4 (27...d4 28.Qb3 de3 29.Kg1 e2 30.Kh1–+) 28.g3 (28.c4 Nf5 (28...Qc4?! 29.Rb4 Qc3 30.Rh4-/+) 29.cd5 ed5–+) 28...Nf5 29.Kg2 (29.Qb3 Ke7–+) 29...d4 (29...Ne3 30.Kh1 Ke7 31.Qc1–+) 30.e4 (30.ed4 Nd4 31.Qb2 Ke7–+) 30...Ne3 31.Kf2 (31.Re3 de3 32.Rb3 Ke7–+) 31...Nc2 32.Rc1 d3 33.Kg2 f5 34.Rd1 (34.Qb7 Ke7 35.Qb2–+) 34...Ne3 35.Kh1 Nd1 36.Qd1 Qe3 (36...fe4 37.fe4 Qe3 38.h3–+) 37.Rb3 (37.ef5 e5 38.Rb3–+) 37...Qe2 (37...fe4 38.fe4 Qe4 39.Kg1 Qd4 40.Kg2 d2–+) 38.Rd3+= Qd3 39.Qd3 (39.Qd3 Bd7 40.Qa6+=). bambinik – Guest66731, 2003.

6.Be5 Qb5 7.Bc7 Qb2 8.Nc3 g6 9.Ra2 Qb4 10.Nd5 Qc5 11.e4+- e6 12.Ra5 b5 13.Bb5 Bd7 14.Bd7 Kd7 15.Rc5 Bc5 16.Be5 ed5 17.Bh8 f6 18.ed5 Ke7 19.Qe2 Kf7 20.Qe6 Kf8 21.Bf6 Re8 22.Bg7 Kg7 23.Qe8 Nf6 24.Qe5 a5 25.Qc7 1–0. marus – brooklyn, internet, 2001.

5.ab4 Bb4 6.Be5 Nf6 7.e3 0-0 8.Qf3 Bg4 (8...Ne4+-) 9.Bf6 Qf6 (9...Bf3 10.Bd8 Bg2 11.Bg2 Rfd8 12.c4+-) 10.Qf6 gf6 11.Ra4 Bd6 (11...c5 12.bc6! a5 13.f3+-) 12.Rg4 Kh8 13.Nc3 c6 14.Nf3 cb5 (14...a6 15.ba6 ba6 16.Bd3+-) 15.Nd5 Rac8 (15...f5 16.Rh4 Rad8 17.Bb5+-) 16.Bd3 Rg8 17.Rh4 Rg2 (17...Rg7 18.Nd4 Rd8 19.Nf6+-) 18.Rh7 Kg8 19.Nh4 Rg5 20.Nf6 Kf8 21.Ne4 Rg7 22.Rh8 Rg8 23.Rg8 Kg8 24.Nd6 Rc6 25.Rg1 Kf8 26.Nhf5 a5 27.Rg4 b4 28.Rh4 Rd6 29.Rh8 1–0. Janek – Orest, internet, 2016.

5.ab4 Bb4 6.Be5 Nf6 7.Nf3 +-.

5.ab4 Bb4 6.Be5 Qg5 7.Bc7 (7.Nf3 Qh6+-) 7...Bf5 (7...Qf6 8.c3+-) 8.Nf3 Qe7 9.b6 a6 (9...a5 10.e3+-) 10.c3 (10.e3 Nf6+-) 10...Bd6 11.Bd6 (11.Qa4 Bd7 12.Bd6 Qd6+-) 11...Qd6 12.Qb3 (12.Qa4 Qd7 13.Qb3 Ne7+-) 12...Nf6 13.Nd4 Be6 (13...Bg6 14.e3+-) 14.Ne6 (14.e3!? 0-0+-) 14...fe6 15.e3 (15.d4 Nd7+-) 15...0-0 16.Bd3 (16.Na3 Nd7+-) 16...Ng4 (16...Nd7 17.Qc2 h6 18.Bh7 Kh8 19.d4+-) 17.f4 e5 (17...Nf6 18.c4+-) 18.Be2 (better is 18.Ra5 Nf6 19.fe5 Qe5+-) 18...Qe6 (18...Nf6 19.fe5 Qe5 20.0-0+-) 19.Bg4 Qg4 Black gets in control 20.Qd5 Kh8 (20...Rf7 21.fe5 Qf5 22.Na3+-) 21.Qe5 (better is 21.fe5!? Qg6+-) 21...Qg2 22.Qh5 (better is 22.Rf1+-) 22...Qh1–+ 23.Ke2 Rf6 24.Qc5 (24.h4 Rb6 25.Qf3 Qh4–+) 24...Rd8 (better is 24...Qh2 25.Kd3 Qg1–+) 25.d4? (better is 25.Qc7 Qh2 26.Kd1–+) 25...Re6 (better is 25...Re8 26.Kd2 Qg2 (worse is 26...Qh2 27.Kd3 Qb2 28.Nd2 Qa1 29.Qh5–+) 27.Kc1 Rf4–+) 26.Qb4 (26.f5 Qh2 27.Kd1 Re3 28.Qc7 Qe2 29.Kc1–+) 26...Rde8 (better is 26...Qg2 27.Kd1 Re3 28.c4 Rd3 29.Kc1–+) 27.Kd3 (27.Kd2 Qh2 28.Kd3 Re3 29.Kc4–+) 27...Qd1 0–1. Woelfelschneider,Peter – Schneider,B, Telefonpartie, 1985.

5.ab4 d4 6.c3 (better is 6.Nf3 f6+-) 6...b6 (6...dc3 7.Bc3 e4+-) 7.Nf3 Bd6 (7...dc3 8.Nc3 Qd6 9.Qc2+-) 8.cd4 e4 9.Ne5 Nh6 (9...Ne7 10.Qc2+-) 10.Bc3 (better is 10.Qc2!? 0-0+-) 10...0-0 11.e3 (11.Qc2 Bf5 12.Nc6 Qd7+-) 11...f6 (11...Be5 12.de5 Bf5 13.Bd4+-) 12.Bc4 Kh8 13.Nc6 Qd7 (13...Qe8 14.Bd5+-) 14.Ra7 (14.d3 Qf5+-) 14...Ra7 15.Na7 Bb7 16.d5 (16.d3 ed3 17.0-0 Qg4 18.Qg4 Ng4+-) 16...Ra8 (16...Qf5 17.Nc6+-) 17.Nc6 Nf5 (17...Qf5 18.Qc2+-) 18.0-0 (18.Qg4 Qc8+-) 18...Nh6 (18...Qe8 19.d3+-) 19.f4 (19.d3 Qf5+-) 19...Bf8 (19...Nf5 20.Re1+-) 20.Qc2 (20.d3 Nf5 21.Qg4 Bc8+-) 20...f5 (20...Qe8 21.Re1+-) 21.d3 Ng4 22.Qe2 (22.Re1 Re8+-) 22...h5 (22...Qe8 23.Re1+-) 23.h3 (23.Ne5 Qe8 24.de4 fe4 25.Ng4 hg4 26.Qg4 Qf7+-) 23...Nh6 (23...Nf6 24.de4 fe4 25.f5+-) 24.Qh5 Qd6 (24...Kh7+-) 25.Be5 Qd7 26.Qh6 Kg8 27.d6 1–0. 1805DYDIDIDY – Oma, mySchach.de, 2005.

5.ab4 Bd6 6.Nf3 Qe7 7.e3 +-.

5.Be5 Nc2 6.Qc2 a6 (6...Bd7 7.e3+- (worse is 7.Bc7 Rc8 8.Bd8 Rc2+-)) 7.ba6 (7.Qc7?! Qc7 8.Bc7 ab5+-) 7...Ra6 8.e3 (8.e3 Rd6 9.Bd6 Bd6 10.d4+-; 8.Qc7?! Qc7 9.Bc7 Rc6+-) 1–0. Malmstroem,Jan – Ross, email CTON, 1996.

5.Be5 f6 6.ab4?! fe5 7.e4 Nf6 =.

5.Be5 f6 6.Bc3 Nc2 7.Qc2 Ne7 +-.

5.Be5 f6 6.Bg3 +-.

4.a4 c5 5.e3 Nf6 6.c4 d4 7.ed4 cd4 8.d3 (better is 8.Nf3!?=) 8...e5-/+ 9.Be2 h6 10.Nf3 Nbd7 11.0-0 Nh7 12.Re1 Bd6 13.Nbd2 0-0 14.Ne4 Bc7 15.h3 f5 16.Ng3 f4 17.Ne4 Nhf6 18.Qc2 Ne4 19.de4 Nf6 (19...Nc5!? 20.Ba3 b6=) 20.c5 b6 21.c6 Nh7 22.Ba3 Rf6 23.Bc4 Be6 24.Be6 Re6 25.Qc4 Qe8 26.Rad1 Kh8 27.Nh4 Bd6 28.Bd6 Rd6 29.Nf5 Rf6 30.Rc1 Rc8 31.c7 (31.a5 f3+=) 31...Ng5 32.Qd5 Ne6?? (better is 32...f3 33.h4 Nf7=) 33.Nd6+- (33.Qe5?! Qd7+-) 33...Nc7?? (33...Qd7 34.Nc8 Qc8+-) 34.Rc7! Rd6 (34...Rc7 35.Ne8) 35.Rc8 Qc8 36.Qd6 Qe8 (36...Qc2 37.Qe5 d3 38.Qa1+-) 37.Qc7 (37...f3 38.Qa7+-; better is 37.Rc1!? f3+-) 1–0. lidl4 – 09phypeach, Live Game Caissa's Web, 2004.

4.a4 Bg4 5.e3?? (better 5.h3 Bf5 6.Nf3=) 5...Bd1–+ 6.Kd1 e6 7.d4 Nf6 8.Nd2 g6 9.Ke1 Bg7 10.Ngf3 0-0 11.c4 a6 12.c5 ab5 13.ab5 Ra1 14.Ba1 b6 15.c6 Ne4 16.Be2 (16.Bd3 f5–+) 16...Qd6 17.Bd3 Nd2 (better 17...Qa3 18.Ke2 Nf2 19.Kf2 Qd3 20.Rb1–+) 18.Nd2 (18.Kd2 f6 19.Bb2 e5–+) 18...Qa3 19.Ke2 Rd8 20.f4 Qd6 21.Rc1 Bf8 22.Bc3 f6 23.Rb1 Qe7 24.Ra1 Qf7 25.Nf3 Bd6 26.g3 Qe8 27.Ra7 Nc6 28.bc6 Qc6 29.Bd2 Ra8 30.Ra8 Qa8 31.g4 c5 32.f5 (32.Bb5 c4 33.g5 Qa2–+) 32...c4 33.Bc2 gf5 (33...ef5 34.gf5 g5 35.Be1–+) 34.gf5 e5 35.Bc3 (35.de5 fe5 36.e4 d4–+) 35...e4 36.Nd2 Bh2 37.Be4 (37.Kd1 Bg1 38.Nf1 Qa3–+) 37...de4 38.Nc4 Qa6 39.d5 Qc4 40.Kf2 (40.Kd2 Qd3 41.Kc1 Qc3 42.Kd1 Bd6 43.Ke2 Qc2 44.Kf1 Bg3 45.Kg1 Qf2 46.Kh1 Qf1) 40...Qd5 (40...Qc3 41.Kf1 Qd2 42.d6 Bg3 43.Kg1 Qf2 44.Kh1 Qf1) 41.Bf6 (41.Be1 Qf5 42.Ke2 Bg1 43.Bh4 Qf3 44.Kd2 Be3 45.Kc3 Bc5 46.Kb2 Qa3 47.Kc2 Qa2 48.Kd1 e3 49.Ke1 Bb4 50.Kf1 Qh2 51.Bf6 e2) 41...Qf5 (41...Qd2 42.Kf1 Bg3 43.Kg1 Qf2 44.Kh1 Qf1) 42.Kg2 Qf6 43.Kh2 b5 44.Kg2 b4 (44...Qf3 45.Kg1 h5 46.Kh2 h4 47.Kg1 h3 48.Kh2 Qg2) 45.Kh3 (45.Kg1 b3 46.Kh2 b2 47.Kh3 Qf5 48.Kg3 b1Q 49.Kh2 Qbf1 50.Kg3 Q1f2) 45...b3 (45...Qf3 46.Kh2 h5 47.Kg1 h4 48.Kh2 h3 49.Kg1 Qg2) 46.Kg4 (46.Kg3 Qf3 47.Kh4 h5 48.Kg5 Kg7 49.Kh4 Qg4) 46...b2 47.Kg3 Qf3 48.Kh4 h5 49.Kg5 Qg4 (49...Kg7 50.Kh4 Qg4) 50.Kf6 b1Q 51.Ke5 Qb5 (51...Qb6 52.Kd5 Qge6) 52.Kf6 (52.Kd4 Qgd7 53.Ke4 Qbf5) 52...Qgf5 (52...Qbg5) 53.Ke7 Qbd7 0–1. BeepBeepImAJeep (2740) – Geck0 (2460), lichess.org, 2019.

4.c4 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 dc4 (7...Nf6 8.Nf3=) 8.e3 e6 9.Nf3 Nf6 10.Qc2 Bd6 11.Bc4 Bd7 (11...Nbd7!?+=) 12.e4+- Bf4 (12...Be7 13.Nc3+-) 13.Bb2 (13.g3 Bh6+-) 13...0-0 14.0-0 Re8 (14...c6 15.e5 cb5 16.Bd3+-) 15.e5 Ng4? (better 15...Nd5+-) 16.h3 Nh6 17.Qe4 Bg5 18.Bd3 Nf5 19.g4 c6 20.gf5 (20.Rc1 g6 21.gf5 ef5+-) 20...ef5 21.Qa4 (21.Qe2 cb5 22.Bb5 Bb5 23.Qb5 Re6+-) 21...cb5 22.Bb5 Bb5 23.Qb5 Bf4 (23...Re6 24.d4+- (24.Qb7?! Rb6 25.Qa8 Ra6=)) 24.Qb4 (24.Nc3 Qd7+-) 24...Bh6 (24...g5 25.Qc3 g4 26.Qc4+-) 25.Qb7 Nd7 (25...Qd7 26.Qd7 Nd7 27.Na3+-) 26.Rc1 Bf4 (26...Nf8 27.Rc7 Ne6 28.Rd7+-) 27.Rc7 Ne5 (27...Nf8 28.Rf7 Ne6 29.Rf5+-) 28.Be5 Be5 29.Ne5 Qg5 (29...Qd6 30.Nf7 Re1 31.Kg2 Qg6 32.Kf3 Qh5 33.Kg3 Qg6 34.Kf4+-) 30.Kf1 Qh4 (30...h6 31.d4 Qf4+-) 31.Rc8 Qh3 (31...Qe7 32.Qe7 Rc8 33.Qf7 Kh8 34.Qe6 Rc1 35.Kg2 Rg1 36.Kg1 h6 37.Ng6 Kh7 38.Ne7 h5 39.Qf7 Kh6 40.Qg6) 32.Kg1 (32.Kg1 Qg4 33.Ng4 h6 34.Re8 Kh7 35.Qf7 fg4 36.Re7 g3 37.Qg7) 1–0. DEFFM – GuestBJKJ, freechess.org, 2018.

4.c4 dc4 5.e3 Be6 6.Nf3 (6.Qc2=) 6...b6 (6...a6 7.Ng5 A) 7...ab5? 8.Ne6 fe6 9.Qh5 Kd7 10.Qb5 Nc6 11.Bc4+- (11.Qb7 Rb8 12.Qa6 Rb2-/+); B) 7...Bd5=) 7.Nc3 (7.Ng5 Bd5+=) 7...Nf6 (7...c6 8.Nd4 Bd5 9.Qa4+=) 8.Ng5 g6? (better 8...Bg4 9.f3 Bd7+=) 9.Ne6+- Qd6?? (better 9...fe6 10.Qf3 Nbd7+-) 10.Ng5 Qb4 (10...Bg7 11.Bc4 0-0 12.Qb3+-) 11.Qf3 (better 11.Nd5 Nd5 12.Bh8 Qb5 13.Qf3+-) 11...Nc6 (11...c6 12.bc6 Na6+-) 12.Qc6 Kd8 13.Nf7 Kc8 14.Qa8 Kd7 15.Ne5 (better 15.Ba3 Bg7 16.Qc6 Kc8 17.Bb4+-) 15...Kd6 16.Ne4 Ne4 (16...Ke6 17.Ng5 Kf5 18.Qf3 Kg5 19.Nf7 Kh4 20.Qh3) 17.Qc6 1–0. michaelbuss (2815) – tinca50, ChessWorld.net, 2010.

4.c4 dc4 5.e4 c6 6.a4 cb5 7.ab5 Be6 8.Qc2 Qc7 9.Na3 Can c4 get defended? 9...Nf6 10.e5 Nd5 11.Qc4 Qc4 12.Bc4 Nf4 13.Be6 fe6 14.Nf3 (14.Kf1+=) 14...Nd3? (better 14...Ng2 15.Kd1 Nf4=) 15.Ke2+- Nb2 16.b6?? (better 16.Rhb1+-) 16...ab6–+ 17.Nb5 Ra1 18.Ra1 Kf7 (better 18...Na6–+) 19.Ra8= Nd7 (19...Nc6 20.Ng5 Kg6 21.Ne6=) 20.d4+= h6 (better 20...g5 21.Rd8 g4 22.Ng5 Kg6 23.Ne6 Kf7 24.Ng5 Kg6=) 21.Kd2?? (better 21.Nd2+-) 21...g5-/+ 22.Kc3 (better 22.Rd8 g4 23.Rd7 gf3 24.g3-/+) 22...Bg7?? (better 22...Nd1 23.Kd2 Nf2–+) 23.Kb2?? (better 23.Rh8 Na4 24.Kb4 Bh8 25.Ka4+-) 23…Ra8–+ 0–1. AvImd (1665) – mwanakatwebarry (1695), lichess.org, 2020.

4.c4 dc4 5.e4 e6 6.Bc4 b6 1–0. guest648 – guest287, ICC, 1999.

4.c4 Nf6 5.cd5 Qd5 6.Nc3 Qc5 (6...Qd6 7.d4=) 7.Nf3 Bd7 8.a4 c6 (8...a6 9.e4+=) 9.e3 cb5 (9...a6 10.Be2+=) 10.ab5 (10.Nb5 Qb6+-) 10...Nd5 (10...Bg4 11.Be2+=) 11.Nd5 (11.Ne5 Ne3 12.Nd7 Nd1 13.Nc5 Nb2 14.Nb7 Nd7+-) 11...Qd5 12.Qa4 a6 (12...f6 13.d4+-) 13.Bc4 Qc5 14.Bd4 (14.Ne5 e6+-) 14...Qd6 15.0-0 (15.Ne5 e6 16.Qd1 Qc7+-) 15...e6 (15...f6 16.Bb2+-) 16.Qc2 (better 16.Be5 Qb6 17.Qc2+-) 16...Be7?? (better 16...f6+-) 17.Bg7+- Bb5 (17...Rg8 18.Qh7 Rg7 19.Qg7 Bf8+-) 18.Bb5 Nc6 19.Bh8 0-0-0 (19...Rc8 20.Bc6 Rc6 21.Qh7+-) 20.Bc6 (20.Bc6 Qc6 21.Qh7+-) 1–0. DEFFM – GuestSTQT, freechess.org, 2018.

4.d4 e6 5.e3= b6 6.Nf3 Nd7 (6...a6 7.c4=) 7.a3 (7.c4 a6=) 7...Ngf6 (7...a6 8.c4=) 8.c4 (8.Nbd2 a6=) 8...dc4 (8...a6 9.cd5 ed5 10.Qa4=) 9.Bc4 Be7 (9...a6 10.Nbd2=) 10.d5 (10.0-0 a6+=) 10...Nc5 11.Nc3 0-0 (11...a6 12.Ne5+=) 12.0-0 (12.Nd4 a6+=) 12...h6 (12...a6 13.Ne5=) 13.h3 (13.Nd4 a6+/-) 13...Qd7 (better is 13...a6!? 14.Ne5 ab5=) 14.Ne5 Qd6 15.Nc6 Re8 (15...a6 16.Qc2+=) 16.Re1 (16.Qf3 e5+/-) 16...e5 (16...a6 17.Qf3 e5 18.e4+/-) 17.e4 Bb7 18.a4 Bc6 19.bc6 (19.dc6 a6+/-) 19...a6+= 20.f3 (20.Qe2 Ra7+=) ½–½. Frankenfeld,Daniel – Paeschke,Alexander, GER–ch U11 Pinneberg, 1996.

4.d4 e6 5.e3= Nf6 6.Nf3 =.

4.d4 e6 5.Nf3 c5 6.dc5 Bc5?? 7.Bg7+- Nh6 8.Bh8 f6 9.e3 Kf7 10.Bf6 Qf6 11.c3 Nd7 12.Be2 b6 13.0-0 Bb7 14.Qc2 Kg7 15.Nbd2 e5 16.Rad1 Rg8 17.Nb3 Kh8 18.Nc5 Nc5 19.c4 d4+/- 20.ed4?? Bf3=+ 21.Bf3? Qf3–+ 22.g3 Ne4?? 23.Qd3 Qd3 24.Rd3+- Rd8 25.d5 Nc5 26.Rd2 Nf5 27.Re1 Nd4? 28.Kg2+- (28...Nf5 29.Re5+-) 1–0. M8IN3 – vcuatro, Live Game Caissa's Web, 2005.

4.d4 e6 5.Nf3 Nf6 6.Nbd2 =.

4.d4 Bf5 5.Nf3 =+.

4.e3 Qd7 5.a4 c6 6.Nf3 f6 7.c4 e5 8.Nc3 Qd6 (8...Bb4 9.d4+=) 9.Qb3 (better is 9.bc6 bc6 10.cd5 cd5 11.d4+/-) 9...Be6?? (better is 9...Qb4 10.Qb4 Bb4 11.cd5 Bc3 12.Bc3 cd5+=) 10.bc6+- Qc6 (10...Nc6 11.cd5 Bf7+-) 11.cd5 (11.Nd5?! Bd6+/-) 11...Bd5 12.Nd5 Nd7 (12...Qc8+-) 13.Bb5 Qe6 (13...Qc8 14.Rc1 Bc5+-) 14.Nc7 1–0. Janek – Larry, internet free game, 2017.

4.e3 Qd7 5.Nf3+= Qd6 (5...Nf6 6.Be2+=) 6.Be5 Qc5 (6...Qd8 7.d4+=) 7.d4+/- Qb6 8.c4 dc4 9.Bc4 e6 (9...Nd7 10.0-0+/-) 10.Nbd2 Nd7 11.Bd3 Ne5 12.Ne5 Bd6?? (better is 12...Qd6+/-) 13.Nec4+- Qb5 (13...Nf6+-) 14.Nd6 (14.Nd6 cd6 15.Bb5 Ke7 16.Qc2+-) 1–0. pierre – qici, internet live, 2010.

4.e3 f5 5.c4 dc4 (5...e6 6.Qh5 g6 7.Qf3+=) 6.Bc4 Nf6 7.Bf6 (7.Nf3 a6 8.Ng5+/-) 7...gf6? (better is 7...ef6 8.Nf3 a6+=) 8.Qh5+- Kd7 9.Qf5 Ke8 10.Qh5 Kd7 11.Qd5 Ke8 12.Qf7 Kd7 13.Qd5 (13.Nc3!? c6+-) 13...Ke8 14.Qf7 Kd7 15.Nf3 a6?? (15...c6 16.Nc3 Kc7 17.Rc1+-) 16.Nc3 (better is 16.Ne5! fe5 17.Qf5 Kd6 18.Qd3 Kc5 19.Qd8+-) 16...ab5 17.Nb5 Nc6 (17...Kc6+-) 18.Be6 1–0. marus1 – kelly844, internet, 2001.

4.e3 h6 5.Nf3 Bg4 6.Be2 e6 7.0-0 c6 (7...Nf6 8.h3 Bf3 9.Bf3+=) 8.Ne5 (better 8.a4+=) 8...cb5?? (better 8...Be2 9.Qe2 Nf6=) 9.Bb5+- (9.Bg4?! Nc6+-; 9.Ng4?! a6+-) 9...Ke7 (9...Nc6 10.Qg4 Rc8+-) 10.Qg4 (10.Qg4 Qc7 11.Qb4 Qd6 12.Qh4 g5 13.Qh5+-) 1–0. DEFFM – salaf, freechess.org, 2020.

4.e4 e6 (4...de4 5.Ne2=+) 5.ed5= ed5 6.Nf3 Nf6 7.Be2 Bd6 8.0-0 0-0 9.a4 Be6 10.d3 Nbd7 11.c4 Qe7 12.Nbd2 a6 13.Re1 Bb4 14.Bf1 ab5 15.ab5 Nb6 16.Ra8 Ra8 17.Qc2 Qd6 18.Be5 Qc5 (18...Qd8 19.c5 Nbd7 20.Bd4=) 19.Nb3 (better 19.Bf6!? gf6 20.d4+-) 19...Qe7= 20.Ra1 Ra1 21.Ba1 dc4 22.dc4 c5 Opening the d–file gets White a lot of play 23.h3 (23.bc6 bc6 24.Ng5 Nbd7+=) 23...Qd7 (23...Ne8 24.Bd3=) 24.Ne5 (24.Bf6!? gf6 25.Bd3+-) 24...Qc8 25.Bd3 g6 (25...Qc7 26.Kh1+=) 26.Nf3 (better 26.Ng6!? fg6 27.Bf6+-) 26...Nh5 27.Be5 Bh3 (better 27...Nd7!?+=) 28.gh3+- Qh3 29.Be4 f6 (29...Qg4 30.Kf1+-) 30.Bh2 (30.Bc7 Qg4 31.Kh1 Qe6 32.Bb6 Qb6 33.Bg6 hg6 34.Qg6 Kf8+-) 30...Qg4 31.Kh1 Na4 (better 31...Qd7+-) 32.Qd3 Nc3 (32...Kg7 33.Bb7 Nf4 34.Bf4 Qf4 35.Qd7 Kh6 36.Qf7+-) 33.Bb7 Nf4 (33...Kg7+-) 34.Qd8 Kg7 Threatening mate: Qg2 35.Qc7 Kh6 36.Qf4 Qf4 37.Bf4 g5 38.Be3 (38.b6!? Na4 39.Bc7 g4+-) 38...Nd1 (38...Na4 39.Nh4+-) 39.Bc5 (39.Bc5 Bc5 40.Nc5 Nf2 41.Kg1 Nh3 42.Kf1+-) 1–0. BeepBeepImAJeep – Walzeees (1815), lichess.org simul, 2017.

4.Nf3 c5 5.bc6 bc6 6.e3 Ba6 7.Ba6 Na6 8.Ne5 Qd6 9.0-0 f6?? (better 9...Nf6+=) 10.Qh5+- Kd8 (10...g6 11.Ng6! hg6 12.Qh8 Nh6+-) 11.Nf7 Kd7 12.Nd6 Kd6 13.d3 g6 14.Qd1 e5 (14...Kd7 15.c4 Nc7 16.Nc3+-) 15.Nd2 (15.c4 Ne7+-) 15...Bh6 (15...Ne7 16.Ba3 Ke6 17.Qg4 f5 18.Qa4+-) 16.Nf3 Ne7 17.a3 (17.Ba3 Kd7+-) 17...Nc5 Black prepares e4 18.c3 (18.d4 Nd7+-) 18...Rab8 19.Rb1 e4 (19...Rb7 20.d4 Nd7 21.de5 Ne5 22.c4+-) 20.Ne1 (20.de4!? Ne4 21.c4 Bg7+-) 20...f5 (20...Rb7 21.d4 Ne6 22.a4+-) 21.de4 fe4 22.c4 Nd3 (22...Rhf8+-) 23.Bh8 Rb1 (23...Rh8 24.Nd3 ed3 25.Qd3+-) 24.Qb1 Ne1 25.Re1 Nf5 26.cd5 cd5 27.Qb2 Ng7 28.Bg7 Bg7 29.Qg7 (29.Qg7 h6 30.Rc1 g5 31.Rc7 Ke6 32.Qg6 Ke5 33.Re7) 1–0. alessandrocarvalhaes (1870) – crstianM84 (1675), lichess.org, 2019.

4.Nf3 c6 5.a4 a6 6.ba6 Na6 7.e3 Qb6 8.Bd4 Nc5 9.Nc3 f6 10.e4 (10.Nh4!? Nh6 11.a5+=) 10...e5= 11.Bc5 (11.Rb1!? Qa7 12.Ne5 fe5 13.Qh5 Kd8 14.Qe5=) 11...Bc5-/+ (11...Qc5?! 12.ed5 cd5 13.Bb5 Kf7 14.0-0=) 12.ed5 (12.Qe2 Ne7-/+) 12...Bf2 13.Ke2 Bd4 14.Rb1 Qa5 15.dc6 bc6 (15...Bc3 16.cb7 Bb7 17.Rb7 (worse is 17.dc3 Qa4 18.Ke1 Bc6-/+) 17...Qa6 18.Rb5 Qa4 19.Ke1 Qe4 20.Qe2 Ra1 21.Kf2 Bd4 22.Nd4 Qd4 23.Qe3 Qe3 24.de3+=) 16.Ne4 Qd5 17.d3 Ra4 18.c3? (better is 18.Nd4 ed4 19.Kf2–+) 18...Ra2 19.Ke1 (19.Ned2 Bc3 20.Qc1–+) 19…Qe4 (19...Qe4 20.Be2 Bc3 21.Kf2 Qd5–+) 0–1. Hartwell,S – Williams,Michael, USA Golden Knights corr, 1994. (=1.Nf3 d5 2.b4 Nc6 3.b5 Nb8 4.Bb2 c6)

4.Nf3 c6 5.bc6 Nc6 6.e3 f6 (6...Qb6 7.Bc3=) 7.Nh4 (7.c4 e5=) 7...e5 (7...Nh6!?=+) 8.Qh5+= g6? (better is 8...Kd7+=) 9.Ng6!+- hg6 10.Qh8 (10.Qh8 Qb6 11.Bc1+- (11.Qg8 Qb2 12.Qg6 Ke7-/+)) 1–0. Wall,Bill – Westin,Bruce, Mt View, CA, 1988.

4.Nf3 c6 5.e3 Bd7 6.a4 f6 7.c4 cb5 (7...Bg4 8.h3 Bh5 9.bc6 Nc6 10.cd5 Qd5 11.Nc3+=) 8.ab5+/- Be6 (8...Bg4 9.cd5 Qd5 10.Nc3+/-) 9.c5 Nd7 (9...Bg4 10.d4+/-) 10.d4 Bf7 11.Be2 e6 12.0-0 Ne7 13.Nc3 g6 14.e4 Bg7 15.ed5 ed5 16.Qd2 0-0 17.Qf4 Qb8 18.Qg4 Qc8 19.Rfe1 (19.Rfe1 Re8 20.Qf4+-) 1–0. orane – gsbs, internet, 2003.

4.Nf3 Nd7 5.d4 Nb6 6.e3 Bf5 7.a4 e6 8.Bd3 (8.a5!? Nd7 9.a6+=) 8...Bd3= 9.Qd3 Nf6 (9...Nc4 10.Ba3=) 10.Nbd2 Bb4 (10...a5 11.0-0=) 11.0-0 Ba5 12.Nb3 Bb4 13.c3 Bd6 14.Ba3 Nc4 15.Bd6 Nd6 (15...cd6 16.Nbd2 Qc7 17.Nc4 Qc4 18.Qc4 dc4 19.Nd2=) 16.Nbd2 Nfe4 17.c4 Nd2 18.Nd2 dc4 19.Nc4 0-0 20.Nd6 ½–½. mtr – proxy2478, internet, 2001.

4.Nf3 Nd7 5.e3 e6 6.a3 Ngf6 7.Be2 g6 (7...Bd6 8.0-0=) 8.d4 Bg7 9.Nbd2 0-0 10.c4 c6 11.c5 cb5 12.Bb5 a6 13.Ba4 b5 14.Bc2 a5 (14...Bb7 15.0-0+=) 15.0-0 Ba6 16.Re1 Qc7 17.Bc3 e5 18.Nb3 (18.de5 Ng4+-) 18...e4 (18...a4 19.Nbd2 e4 20.Ng5=) 19.Nfd2 (better 19.Ba5 Qc6 20.Nfd2+-) 19...Ng4?? (19...a4!? 20.Nc1 Nc5=) 20.g3 (better 20.Qg4 a4 21.Nc1+-) 20...a4 21.Nc1 (21.Qg4 ab3 22.Nb3 Rfc8+-) 21...Nc5 (21...f5 22.Na2=) 22.Qg4 (22.Nb1 Nf2 23.Kf2+=) 22...f5? (22...Nd3 23.Nd3 Qc3 24.Ne4 de4 25.Nb4+=) 23.Qh4 (better 23.Qf4!? Qd8 24.Qh4 (24.dc5?! Bc3 25.Ne2 Bd2=+) 24...Qh4 25.gh4+-) 23...Nd3= 24.Bd3 (better 24.Na2 Bf6 25.Qh6 Ne1 26.Re1-/+) 24...Qc3-/+ 25.Ra2 b4?? (better 25...ed3 26.Rf1 b4–+) 26.Ba6 b3 27.Ncb3?? (better 27.Ne2 Qc7 28.Rb2 Ra6 29.Rc1+-) 27...ab3–+ 28.Nb3?? (better 28.Raa1!? Ra6 29.Rad1-/+) 28...Qb3 (better 28...Qe1 29.Kg2 Bf6–+) 29.Raa1 Ra6 30.Qe7 Rc6?? (30...Bf6!? 31.Qc5–+) 31.a4?? (31.Reb1 Bf6 32.Qd7+- (32.Rb3? Be7 33.Rb5 Ra8–+)) 31...Rc2 32.a5 Ra2 33.a6 Qa4 (33...Kh8!?–+) 34.Ra2 Qa2 35.Qe6 Kh8 36.Qd6? (36.Rc1=+) 36...Qa5?? (36...f4!? 37.Rf1–+) 37.Rf1?? (better 37.Rb1=) 37...Rd8–+ 38.Qc6 Rb8 (38...Qa3 39.Rb1-/+) 39.Kg2 Qb6 (better 39...Qd8!?-/+) 40.Qb6= Rb6 41.a7 Ra6 42.Rb1 (42.Rb1 Bf8 43.Rb8 Ra7 44.Rf8 Kg7 45.Rd8=). alessandrocarvalhaes (1750) – neftali_mena (1625), lichess.org, 2018.

4.Nf3 e6 5.a4 c6 6.e3 Bd7 7.c4 dc4 (7...Nf6 8.Be2=) 8.Bc4+= cb5 (8...Nf6 9.0-0+=) 9.ab5 Qb6 (9...Nf6 10.Be5+=) 10.Qb3 (10.Bd4 Qd8+/-) 10...a6 11.Nc3 (better is 11.Bd4 Qd8 12.0-0+/-) 11...Bd6?? (better is 11...Nf6+=) 12.Na4+- Qc7 (12...Qa5 13.Bc3 (13.Bg7?! ab5 14.Qb1 Qb4+-) 13...ab5 14.Ba5 Ra5 15.Qc3 Ra4 16.Ra4 bc4 17.Qg7 Ba4 18.Qh8+-) 13.Bg7 (13.b6 Qd8 14.Bg7 Nc6+-) 13...Bb5 (13...ab5 14.Bb5 (14.Bh8?! bc4 15.Qc2 Bc6+/-) 14...Ra5 15.Bd7 (15.Bh8?! Rb5 16.Qd3 Rh5+-) 15...Nd7 16.Qd1+- (worse is 16.Bh8 b5+-)) 14.Bb5 ab5 15.Qb5 Kd8 (15...Qd7 16.Qd7 Nd7 17.Ke2+-) 16.0-0 Nc6 (16...Ra5 17.Qb3 b5 18.Nb2+-) 17.Bh8 e5 (17...Ra5 18.Qd3 Rh5 19.Nb2+-) 18.Nb6 (better is 18.Nc5 Rb8 19.Ne4+-) 18...Ra5 (18...Rb8+-) 19.Ra5 Bc5 20.Qc5 1–0. Doda (2070) – HereAgain, Freundschaftspartie, 5m + 0s, 2007.

4.Nf3 e6 5.e3 Nf6 (--> 4.e3 Nf6 5.Nf3 e6).

4.Nf3 Bf5 5.e3 e6 6.c4 (6.Be2 Nf6=) 6...Nf6 7.Nc3 c6 (7...Bd6 8.cd5 ed5 9.Be2=) 8.a4 (8.cd5 Nd5 9.Nd5 Qd5=) 8...Bd6 9.Be2 (9.bc6 bc6 10.cd5 ed5=) 9...0-0 (9...dc4 10.Bc4 0-0 11.d3=) 10.0-0 (10.Nh4 Bg6=) 10...Nbd7 (10...dc4 11.Bc4 Nbd7 12.Rc1=) 11.d4 (11.Nh4 Qc7=) 11...Re8 (11...dc4 12.bc6 bc6 13.Bc4=) 12.c5+= Bc7 13.a5 (13.Nh4!?+=) 13...Ba5+= 14.Nd2 (14.bc6 bc6 15.Qa4 Bc3 16.Bc3 Ne4=) 14...e5 (14...Bc7 15.Nf3-/+) 15.de5 Ne5 16.Nb3 Bc7 17.Nd4 Bd7 18.h3 (18.Qb3 Bg4+=) 18...Ne4 (18...Qe7 19.Ba3-/+) 19.Na4 (19.f4 Nc4 20.Bc4 dc4 21.Ne4 Re4 22.bc6 bc6-/+) 19...Qe7 (19...Qg5 20.Kh1-/+) 20.b6 (20.Qc2 Qg5 21.Kh1 Qg6-/+) 20...ab6 21.cb6 Bd6 22.Nf3 (22.Nc3 Ra1 23.Ba1 Nc4 24.Bc4 dc4 25.Ne4 Qe4-/+) 22...Qe6 (22...Nf3!? 23.Bf3 Qg5 24.Kh1–+) 23.Ne5 (23.Be5 Be5 24.Ne5 Qe5-/+) 23...Be5 24.Be5 Qe5 25.Qc1 (better is 25.Bd3!?-/+) 25...c5–+ 26.Nb2 Qe6 (26...Ra1 27.Qa1 Qf6 28.Bd3 Qb6 29.Rc1–+) 27.Bf3 (27.Ra8!? Ra8 28.Rd1–+) 27...Qb6 (27...Ra1 28.Qa1 Qb6 29.Rd1–+) 28.Rb1 (28.Ra8 Ra8 29.Rd1 Be6–+) 28...Qg6 29.Kh2 (29.Be4 Re4 (29...Qe4?! 30.Qc5 Qg6 31.Kh2-/+) 30.Kh2 b6–+) 29...b6 (29...Bf5 30.Kh1–+) 30.Rd1 (30.Nd3 Qf6–+) 30...Nf2 31.Rd5 Bc6 32.Rd2 Ne4 (32...Bf3 33.Rf2 Be4 34.Ra1–+) 33.Rc2 (33.Be4 Be4 34.Ra1 Ra1 35.Qa1 b5–+) 33...Qg3 (33...Red8 34.Kg1 b5 35.Nd1–+) 34.Kg1 Re6 (34...b5 35.Nd3 c4 36.Nf2–+) 35.Nd3 Rb8 (35...Ng5 36.Bc6 Rc6 37.Nf4–+) 36.Nf4 Rh6 (36...Ree8 37.Nd3–+) 37.Rbb2 Ng5 (37...g5 38.Nh5 Qh4 39.Qd1–+) 38.Bc6 (38.Bg4 Bb7–+) 38...Rc6 39.Rc5 (39.Rc3–+) 39...Rc5 40.Qc5 (40.Qf1 Nf3! 41.Qf3 Rc1 42.Qf1 Qe3 43.Rf2 Rf1 44.Kf1 Qc1 45.Ke2 Re8 46.Kf3 Qe3 47.Kg4 f5 48.Kh5 Qf2 49.Ne2 Qe2 50.g4 g6 51.Kh4 Qe1 52.Kg5 Qe7 53.Kf4 Qe3) 40...h6 (40...Nf3 41.Kh1 Qe1) 41.Qc1 (41.Qc3 Ne4 42.Qd4 Qe1 43.Kh2 Ng3 44.Rb6 Nf1 45.Kg1 Ne3 46.Kh2 Re8–+) 41...Re8–+ 42.Re2 Nf3 43.Kf1 Qh2 Do you see the mate threat? 44.Kf2 Nh4 (better is 44...Ng5!? 45.Rb2 Ne4 46.Ke2 Qg3–+) 45.Qc6+= Rf8 ½–½. Cianfarani,Gaelle – Touzet,Geraldine, FRA–ch U18 Girls, 1997.

4.Nf3 Nf6 5.e3 (--> 4.e3 Nf6 5.Nf3).

4.g3 b6 5.Bg2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.bc6 Nc6 10.d4 Nh6 11.e3 e6 12.Nd2 b5 13.Ne2 Bd6 14.0-0 0-0 15.Nf3 f6 16.Qd3 Qb6 17.Rb1 Na7 (17...Ba6!?=+) 18.e4 de4 19.Qe4 Bd7 20.d5 (20.c4 Bb8+/-) 20...f5 (better is 20...e5!?=+) 21.Qd3 e5? (better is 21...Qc7+=) 22.Ne5+- Be8 23.Bd4 Nf7?? (better is 23...Qc7 24.Qc3 Qe7+-) 24.Bb6 (24…Ne5 25.Qb3+-) 1–0. audrey – printer, Live Game Caissa's Web, 2004.

4.g3 b6 5.Bg2 Bb7 6.Nf3 Nf6 (6...a6 7.a4=) 7.0-0 (7.a4 a6=) 7...Nbd7 (7...a6 8.a4=) 8.d4 (8.h3 a6 9.a4 e6=) 8...e6 (8...a6 9.a4=) 9.Nbd2 (9.Qd3 a6 10.a4 c5=) 9...c5 (9...a6 10.a4=) 10.c4 Bd6 (10...a6 11.a4=) 11.cd5+= Bd5 (11...ed5 12.Ne5+=) 12.dc5 (12.e4 Ne4 13.Ne4 Be4+=) 12...Bc5 (12...bc5? 13.e4 Be4 14.Ne4 Ne4 15.Ne1+-; 12...Nc5?! 13.Re1+=) 13.a4 (13.e4 Bb7+=) 13...0-0 14.Nb3 a6 (14...Bd6 15.Qd3=) 15.Re1 (15.Qd3 ab5 16.ab5 Ne4=) 15...ab5 (15...Bb4 16.Rf1=+) 16.ab5 Bb4 17.Rf1 Ne4 (17...Ra1 18.Ba1 Qe7 19.Qc2=+) 18.Nfd4 (18.Ra8 Qa8 19.Qd4 Bc3 20.Bc3 e5+-) 18...Bc3 (18...Qf6 19.Qc2 Qg6 20.Ra8 Ra8 21.f3=) 19.Bc3 Nc3= 20.Qc2 Bg2 21.Kg2 Nd5 22.Nc6 Qe8 23.Ra8+= Qa8 24.Ra1 Qe8 25.Nbd4 e5 26.Nf5+/- Qe6 27.e4 N5f6 28.Qe2 Nc5 29.Rd1 Nfe4 30.Qg4 g6-/+ 31.Nh6 Kh8 32.Qe6=+ fe6 33.f3 Nc3-/+ 34.Re1 e4 35.fe4 N5e4 36.Ng4 h5 37.Nge5 Rf2 38.Kg1 Kg7 39.Nd4 Rb2 40.Nd7 Ng5 41.Ne6=+ Ne6 42.Re6 Rb5 43.Nb6 Ne2 44.Re2= Rb6 45.Kg2 Rb4 46.Rf2 h4 47.h3 g5 48.g4 Rb3 49.Rf3 Rb2 50.Rf2 Rb4 51.Rf5 Kg6 52.Rf3 Rb5 53.Rf2 Rb4 54.Rf5 Rf4?? 55.Rf4+- gf4 56.Kf3 Kg5 57.Ke4 f3 58.Kf3 Kf6 59.Kf4 Kg6 60.g5?? Kf7?? 61.Kf5 Kg7 62.g6 Kf8 63.Kf6 Kg8 64.g7 Kh7 65.Kf7 (65...Kh6 66.g8Q Kh5 67.Qg6#) 1–0. coloplayah (1985) – mgoodrich (2040), net–chess.com, 2005.

4.g3 c6 5.bc6 bc6 6.Bg2 Bb7 7.d3 f6 8.Nd2 e5 9.c4 d4 10.Nb3 (10.Rb1 Qd7+=) 10...Bb4 11.Nd2 Qa5 12.a3 Bd2 13.Qd2 Qd2 14.Kd2 Ne7 (14...Nd7 15.e3 Rb8 16.Rb1=) 15.Nf3 (15.Rb1 Bc8+=) 15...c5 16.Rhb1 Nbc6? (16...Bc6 17.e3=) 17.Ke1?? (better 17.Bd4!? ed4 18.Rb7+-) 17...0-0 (17...Nd8 18.Bc1=) 18.Kf1 (18.Bc1 Nd8+=) 18...Na5= 19.Bc1 Bc6 (better 19...Bf3!? 20.Bf3 Rab8=) 20.Bd2+- Nb7 (better 20...e4 21.Ba5 ef3 22.Bf3 Bf3 23.ef3 Nf5+-) 21.Ne1 (better 21.Ne5!? fe5 22.Bc6 (22.Rb7?! Bb7 23.Bb7 Rab8=) 22...Nc6 23.Rb7+-) 21...Nd6 22.Nc2 Rab8 23.Kg1 (23.Ba5 Bg2 24.Kg2 Rb7=) 23...Ba4 (better 23...Bg2 24.Kg2 Kf7=) 24.Rc1?? (better 24.Ne1=) 24...Rb2–+ 25.Nb4? (25.Nd4 ed4 26.Bf4–+) 25...Rd2 (25...cb4?! 26.ab4 Bc6 27.Rd1 Bg2 28.Kg2–+) 26.Bd5 (26.Na6 Rc8 27.Kf1–+) 26...Nd5 27.Nd5 Rb8 (better 27...Re2!? 28.f4 Bc2 29.fe5 fe5 30.Rf1 Rf1 31.Rf1–+) 28.Kf1 (28.Rcb1 Rbb2 29.Rb2 Rb2–+) 28...e4 (better 28...Rbb2 29.Re1 e4 30.de4 Kf7–+) 29.Ke1 (29.Nf4 g5 30.Ne6 ed3 31.ed3 Rc8–+) 29...Rdb2 (better 29...Rbb2 30.Nf4 g5 31.Rcb1 gf4 32.Rb2 Rb2 33.gf4–+) 30.h4 (30.de4 Ne4 31.Nf4 Bc2–+) 30...ed3 31.ed3 Re8 32.Kf1 Ree2 33.Nf4 (33.Kg1 Rf2 34.Rcb1 Rg2 35.Kh1 Rh2 36.Kg1 Rbg2 37.Kf1 Nf5 38.Rb8 Kf7 39.Rb7 Kf8 40.Rf7 Kf7 41.g4 Ng3 42.Ke1 Re2) 33...Rf2 34.Kg1 g5 35.hg5 (35.Rf1 Rfd2 36.hg5 fg5–+) 35...fg5 36.Nd5 (36.Rf1 Rfd2 37.Rab1 Rb1 38.Rb1 gf4 39.gf4–+) 36...Rg2 37.Kf1 Rh2 38.Kg1 (38.Rc2 Bc2 39.Nf6 Kf7 40.Rc1 Bd3 41.Ke1 Rh1) 38...Nf5 (38...Rbg2 39.Kf1 Nf5 40.Ne7 Kf8 41.Ng6 hg6 42.Rab1 Ng3 43.Ke1 Re2) 39.Re1 (39.Ne7 Kf8 40.Ng6 hg6 41.Rc2 Rbc2 42.Rb1 Rcg2 43.Kf1 Ng3 44.Ke1 Re2) 39…Rbg2 (39...Rbg2 40.Kf1 Ng3; 39...Rhg2 40.Kf1 Ng3) 0–1. JUANKARODA (1825) – TamerlanKZ (1840), lichess.org, 2020.

4.h4 Nd7 5.e3 e5 6.Nf3 Bd6 7.c4 c6 8.bc6 bc6 9.cd5 cd5 10.Nc3 Bb7 11.d4 e4 12.Ng5 h6 13.Nh3 Ngf6 14.g4 Rb8 15.Bc1 Bb4 16.Bd2 Qa5 17.Ne2 (17.Nb1!?=+) 17...Bd2 18.Qd2 Qd2 19.Kd2 Ng4 20.Rg1 f5 (20...Nh2 21.Bg2-/+) 21.Nhf4 Kf7 22.Nc3 Ndf6 (22...g5 23.Nfd5 Bd5 24.Nd5–+) 23.Nb5=+ Rhg8 (better 23...Rhd8=+) 24.Nd6+- Ke7 25.Nf5 Kd7 26.h5 (26.Bb5!? Bc6 27.Bc6 Kc6 28.Ne7 Kd6 29.Ng8 Rg8 30.Nh5+-) 26...Bc6+= 27.Bh3 (better 27.Be2 Nf2 28.Ng6 Rb2 29.Ke1 Nd3 30.Bd3 ed3 31.Ne5 Ke8 32.Nd3+= (32.Ng7? Rg7 33.Rg7 d2 34.Kf1 Bb5 35.Kg1 Rc2–+; 32.Rg7?? d2 33.Kf1 Bb5 34.Kg1 Ba4–+)) 27...Rb2?? (27...Nf2 28.Nh6 Nh3 29.Ng8 Ng1 (29...Rg8? 30.Nh3 Nh5 31.Raf1+-) 30.Nf6 gf6 31.Rg1 Rb2 32.Kc3 Ra2=) 28.Kc3+- Rf2? (better 28...Rgb8 29.Bg4 Ng4 30.Rg4 g5+-) 29.Bg4 (29.Rg4?! Ng4 30.Bg4 Rb8+-) 29...Ng4 30.Rg4 Rb8 (30...a5 31.Rg7 Rg7 32.Ng7 Ba4+-) 31.Rg7 Kc8 (31...Kd8 32.Ne6 Ke8 33.Nd6) 32.Rg8 (32.Nd6 Kd8 33.Ne6) 32...Kc7+- 33.Rb8 (better 33.Ne6 Kd7 34.Nc5 Kc7 35.Rg7 Kb6 36.Rb1 Bb5+-) 33...Kb8 34.Rb1 (34.Nh6!? Rh2+-) 34...Kc7 35.Nh6 Rb2 (35...Ra2 36.Nf5 Ra3 37.Kb2 Ra4+-) 36.Rb2 1–0. beatmeeasy (1980) – Peon19 (2015), lichess.org, 2021.

5.e3 (--> 4.e3 c6 5.a4).

5.Nf3 Bf5 =.

5.a4 c6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 Qa5 9.Nc3 (9.Bc3 Qb6+=) 9...Nf6 10.Be2 Bd7 11.0-0 cb5 12.Ne5 b4 13.Nd7 Nbd7 14.Nb5 e6 15.Bb2 Be7 16.Qa1 Qa1 17.Ra1 0-0 18.Ra7 Nc5 19.d4 Nce4 (19...Ncd7 20.Bd3=) 20.Rb7+= Bd6? (better 20...Re8+=) 21.f3+- (21.Nd6?! Nd6 22.Rb6 Rd8+/-) 21...Rc8 22.fe4 Ne4 23.Bd3 b3?? (23...Bf8+-) 24.Be4 bc2 (24...Bf8 25.Na7 Re8 26.Bd3 bc2 27.Bc2+-) 25.Nd6 c1Q 26.Bc1 Rc1 27.Kf2 de4 1-0. onur604 (2320) - Valera20006rapid (2370), Casual Rapid game, lichess.org, 2021.

5.a4 Nf6 6.c4 ab5 7.ab5 Ra1 8.Ba1 e6 9.Nf3 Be7 10.Be2 0-0 11.0-0 c6 12.d4 dc4 13.Bc4 cb5 14.Bb5 Bd7 15.Nc3 Nc6 16.Bd3 Nd5 (16...Nb4!?=) 17.Qb1 Nc3 (17...f5 18.Nd5 ed5 19.Qb7+-) 18.Bh7 Kh8 Black gets in control 19.Bc3 g6 20.d5 (better 20.Bg6!? fg6 21.d5 Kh7 22.dc6 Bc6 23.Ne5+-) 20...Kh7+= 21.dc6 Bc6 22.Rd1 Qc7 23.Be5 Qa5 24.Bf4 Rd8 25.Nd4? (better 25.Rc1=+) 25...Qd5–+ Threatening mate: Qxg2 26.f3 (better 26.e4 Qe4 27.Nc6 bc6 28.Be3–+ (28.Qe4?? Rd1 29.Qe1 Re1)) 26...e5 27.Bg3 ed4 28.Rd4 Qf5 The mate threat is Qxb1 29.Qd1 (29.Qf5 gf5 30.Rd8 Bd8–+) 29...Rd4 30.Qd4 (30.ed4 Bf6–+) 30...Qb1 31.Kf2 Qc2 32.Kg1 Qc1 33.Kf2 Bc5 (33...Bb5 34.Bd6 Qf1 35.Kg3 Qe1 36.Kh3 Bd7 37.g4 Qf1 38.Kg3 Qg1 39.Kf4 Qh2 40.Ke4 Qc2 41.Qd3 Bc6 42.Kd4 Bf6 43.Be5 Be5 44.Ke5 Qd3 45.g5 Qd5 46.Kf4 Qd6 47.Kg4 Bd7 48.Kh4 Qh2) 34.Qh4 Kg7 Do you see the mate threat? 35.Be5 Kf8 36.Qh8 (36.Qd8 Be8 37.Bf4 Qb2 38.Kg3–+) 36...Ke7 Threatening mate... how? 37.Qf6 Ke8 38.Qh8 Kd7 39.Bf4 (39.Qh3 f5 40.Qh7 Be7–+) 39...Qd2 40.Kg3 Qd5 (40...Qe1 41.Kh3–+) 41.Qf6 Be7 42.Qg7 Qe6 (42...g5 43.Bb8–+) 43.h3 (43.Qd4 Bd6–+) 43...Bd6 44.Kh2 (44.Qd4 b5–+) 44...Qe3 45.Qf7 Qe7 46.Qe7 Be7 47.Bd6 (47.Kg3–+) 47...Bd6 48.f4 b5 (48...b5 49.Kg3 b4–+) 0–1. BeepBeepImAJeep (2515) – Kjetil_Lie80 (2430), lichess.org, 2019.

5.a4 Nf6 6.c4 e6 7.Nf3 Bd6 8.cd5 (8.Nc3 0-0+=) 8...ed5= 9.Qc2 Be6 (9...0-0 10.Be2=) 10.Bd3 (10.Nc3 0-0=) 10...Nbd7 11.Nd4 (11.ba6 ba6 12.Nc3 Nc5=) 11...Nc5 12.Ne6 (12.Nc3 Nd3 13.Qd3 0-0=) 12...fe6 (worse 12...Ne6 13.ba6 ba6 14.Bf6 gf6 15.Nc3+-) 13.0-0 Ng4 (13...0-0 14.f4 Nd3 15.Qd3=+) 14.f4 (14.Bg7 Bh2 15.Kh1 Qh4–+) 14...Ne4?? (better 14...Nd3 15.Qd3 0-0=) 15.Be4+- de4 16.Qe4 Qe7? (16...Nf6 17.Qb7 0-0+-) 17.ba6 Ra6 18.Qb7 Rb6 19.Qc8 Qd8 20.Qe6 Qe7 (20...Be7 21.Qa2 Qd3 22.Bg7 Nh2 23.Kh2 Rg6+-) 21.Qc8 Kf7 22.Qh8 Rb2 23.Qh7 Ne3 (23...Nf6 24.Qd3 Bc5 25.Rc1+-) 24.de3 Qe3 25.Kh1 Bf4 (25...Rf2 26.Rd1 Qd4 27.Qf5 Kg8 28.Qe6 Kh7 29.Qh3 Kg6 30.f5 Kf7+-) 26.Qf5 Kg8 27.Rf4 Re2 28.Qf7 Kh7 29.Rh4 Qh6 30.Rh6 Kh6 31.Qf4 (31.Qf4 g5 32.Qf6 Kh7 33.Nc3 Rd2 34.Re1 Rf2 35.Re7 Kg8 36.Qg7) 1–0. GuestNDSG – GuestDBNF, freechess.org, 2020.

5.Bd4 ab5 6.Bb5 c6 7.Bd3 Qd6 8.a4 e5=+ 9.Bb6?? d4 10.e4?? Nd7–+ 11.Bd8 Kd8 12.Na3 Nc5 13.Nc4 Qf6 14.Nb6 Nd3 15.cd3 Ra6 16.Qb3 Be6 17.Qb2 Bc5 18.Nc4 b6 19.Qa2 Kc7 20.Qb1 Ne7 21.a5 b5 22.Nb2 Rha8 23.Qc2 Bd6 24.Nf3 Ra5 25.Ra5 Ra5 26.0-0 Bg4 27.Ne1 Qg6 28.f3 Be6 29.g4 h5 30.Ng2 hg4 31.f4 Qh5 32.f5 Nf5 33.ef5 Bf5 34.Rc1 Ra6 35.Qb3 Rb6 36.Rf1 Be6 37.Qd1 g6 38.Qa1 g3 39.hg3 Bh3 40.Rf6?? Be6 41.Nh4?? Qg5 42.Rf2 Qg3 43.Ng2 e4! 44.de4 Qh2 45.Kf1 Qh1 46.Ke2 0–1. riverborne – CHESSrUS, Caissa's Web, 2006.

5.Nf3 ab5 6.Bb5 Bd7 7.Nc3 Bb5 8.Nb5 e6 (8...c6 9.Nc3=) 9.Be5+= c6? (better is 9...Na6+=) 10.Nc7+- (10.Nc7 Ke7 11.Qb1+-) 1–0. pierre – oppolm, internet live, 2010.

5.Nf3 Nf6 =.

7.Ba1 c5 8.c4 e6 9.Nf3 b6 (9...Nd7 10.Be2+=) 10.Bd3 (10.Qa4 Nf6 11.Bf6 gf6+=) 10...Nf6 (10...Nd7 11.cd5 ed5 12.Nc3=) 11.0-0 (11.Bf6 Qf6 12.cd5 ed5+=) 11...Bb7 (11...Nbd7 12.Nc3=) 12.cd5 Nd5 (12...Qd5 13.Be2+=) 13.Bc4 (13.Na3 Be7+=) 13...Bd6 (13...Nd7!?=) 14.Bg7+- Rg8 15.Bb2 Nb4 16.d3 Nd7 17.Nbd2 (17.g3!?+-) 17...Ne5+= 18.Be5 (18.Ne5?? Rg2 19.Kh1 Rh2 20.Kh2 Qh4 21.Kg1 Qh1) 18...Be5 19.g3 (19.Ne5?? Rg2 20.Kh1 Rh2 21.Kh2 Qh4 22.Kg1 Qh1) 19...Bc7 (19...Bh8 20.Ne4+=) 20.Qb3 (20.d4 cd4 21.ed4 h5+-) 20...Qf6 21.e4 h5 (21...Bf4 22.d4 Bd2 23.dc5+=) 22.Qa4+- Bb8 23.d4! Be4?? (23...cd4 24.Qb4 Deflection) 24.Ne4+- Qf3 25.Qa8 Ke7 (25...Qf4 26.dc5 Ke7 27.cb6 Qe5+-) 26.Qb7 Kf8 27.Qb8 Kg7 28.Qe5 f6 (28...Kh6 29.dc5 bc5 30.Nc5 h4+-) 29.Qe6 (29.Qe6 Ra8 30.Qf7 Kh8 31.Nf6 Qf5 32.Re1 h4 33.g4 Qg4 34.Ng4 Nd5 35.Qh5 Kg8 36.Bd5 Kg7 37.Qh6) 1–0. onur604 (2320) – ILGAT159 (2010), lichess.org, 2020.

7.Ba1 c6 8.c4 dc4 9.Bc4 Bd7 10.Nc3 cb5 11.Nb5 Nc6 12.Nf3 e6? (12...Nf6 13.Ne5 e6 14.0-0+-) 13.0-0 (better 13.Nd6! Ke7 14.Ng5+-) 13...Nge7?? (better 13...Nf6+-) 14.Nd6 1–0. GuestSBVJ – GuestVDBZ, freechess.org, 2020.

7.Ba1 c6 8.c4 e6 9.Nf3 Nf6 10.Nc3 Bb4 11.Be2 Bc3 12.Bc3 Ne4 13.Bb2 cb5 (13...dc4 14.Qc2 Nf6 15.bc6+=) 14.cb5 0-0 15.0-0 1–0. GuestNGLS – GuestXXHP, freechess.org, 2017.

7.Ba1 c6 8.bc6 Nc6 9.Nf3 Qa5 10.Bc3 Qc5 11.Be2 e6 12.0-0 Bd6?? (better is 12...Nge7+=) 13.Bg7+- Be5 (13...e5 14.d4 Qb6+-) 14.Ne5 Ne5 15.Bh8 (better is 15.d4 Qa5 16.de5 Bd7+-) 15...Ng6 16.Bd4 Qd6 17.g3 (17.Nc3 e5 18.Nb5 Qc6+-) 17...N8e7 (17...e5 18.Bb2+-) 18.Nc3 (18.f4 Bd7+-) 18...e5 19.Bb5 (19.Nb5 Qf6 20.Bc5 b6 21.Nd6 Kf8+-) 19...Bd7 20.Bd7 Kd7 21.Ba7 b6 22.Qb1 Nc8 23.Nb5 Qc5 24.c3 (24.d4 Qc4 25.Bb8 f6 26.de5 fe5+-) 24...e4 (24...Kc6 25.Qf5 Nge7 26.Qf7 Qb5 27.Bb8+-) 25.Rd1 (25.Bb8!? f5+-) 25...Ne5 26.d4 Nf3 27.Kg2 Qe7 (27...Qc4 28.Bb8+-) 28.Qb4 (28.Bb8 Qe6+-) 28...Qf6 (28...Qb4 29.cb4 Kc6 30.Rc1 Kb5 31.Rc8 Ne1 32.Kg1 Nf3 33.Kh1+-) 29.Bb8 (better is 29.Qb3 Ne7 30.Na3 Ng5+-) 29...Ke8 (29...Nh4 30.Kf1 (30.gh4?! Qf3 31.Kg1 Qd1 32.Kg2 Qf3 33.Kf1 Qd1 34.Kg2 Qf3 35.Kg1 Qd1 36.Kg2=) 30...Nf3 31.Qb3+-) 30.Bf4 (30.Nc7 Kd7 31.Nd5 Nh4 32.Kg1 Qc6+-) 30...Ne7 (30...Kd7 31.c4 h6 32.Nc3+-) 31.Nd6 Kf8 32.Qb6 Nh4 (32...Qe6+-) 33.gh4 Qg6 34.Bg3 (34.Kh1 Kg7 35.Rg1 Qg1 36.Kg1 h6 37.Bh6 Kg6 38.Ne8 Kh7 39.Qf6 Nf5 40.Qf5 Kh6 41.Qf6 Kh5 42.Qg5) 34...Nc8 35.Qd8 Kg7 1–0. Fournier,Frederic (1920) – pertusato, Active, 2005.

7.Ba1 c6 8.Nf3 Nh6 9.c4 e6 10.Qa4 Bd7 11.Nc3 (11.Qa7 Nf5+=) 11...Nf5= 12.Bb2 Be7 13.cd5 ed5 14.Bd3 0-0 15.0-0 Nh4 16.Nh4 Bh4 17.Qa7 Qc7 18.Rc1 Bd8? (better is 18...Be6+=) 19.Qc5+- Re8 20.Nd5! Qc8 (20...cd5 21.Qd4 Double attack (21.Qc7 Pinning; 21.Qc7 Deflection; 21.Qd4 Decoy)) 21.Qd4 f6 22.Nf4 (22.Qh4 Bf5 23.Qh5 g6 24.Bf5 Qf5 (24...gh5?? 25.Bc8 cd5 26.Bb7+-) 25.Qf5 gf5 26.bc6 Nc6 27.Bf6 Kf7+-) 22...Bf5 23.bc6 bc6 24.e4 Qd7?? (better is 24...Bg4+-) 25.ef5 Qd4 26.Bd4 Nd7 (26...Ba5 27.Be3+-) 27.Bc4 (27.Ne6 Ba5+-) 27...Kh8 28.Be6 Re7 (28...Nb8+-) 29.Rc6 Ne5 (29...Nf8 30.Bc5 Ne6 31.Re6 Re6 32.fe6+-) 30.Rc8 Nf7 31.g4 h6 32.Bf7 Rf7 (32...Re8 33.Be8 g6 34.Bg6 Kg8 35.Rd8 Kg7 36.Ne6) 33.Ng6 (33.Rd8 Kh7 34.Ng6 Rf8 35.Rf8 h5 36.Rh8) 33...Kh7 (33...Kg8 34.Rd8 Rf8 35.Rf8 Kh7 36.Rh8) 34.Rd8 1–0. Janek – Andrew, internet, 2016.

7.Ba1 Qd6 8.c4 dc4 9.Bc4 Nf6 10.Nf3 e6 (10...Nbd7 11.0-0+=) 11.0-0 Be7 12.Be5 Qc5 13.Be2 Nbd7 14.Bd4 (14.d4 Qb6+=) 14...Qf5 15.d3 (15.Bf6 Qf6 16.d4 0-0+=) 15...e5 (15...Qb5 16.Qc2 c6 17.Nc3=+) 16.e4 Qe6 17.Bb2 0-0 18.d4 (18.Nbd2 Bd6+=) 18...ed4 19.Nd4 Qe4 20.Bf3 Qg6 21.Nd2 Bd6 22.Re1 Ne5 23.Be4 (23.Ne4 Nf3 24.Qf3 Ne4 25.Re4 Bd7-/+) 23...Ne4 24.Ne4 Qh6 (better 24...Bh3! 25.Ng3 Nd3 26.gh3 Nb2–+) 25.Nd6 (25.Bc1 Qh4 26.Bg5= (worse 26.Nd6 cd6 27.Be3 Re8-/+)) 25...cd6 26.Nf3 Bg4 (better 26...Nc4!? 27.Bc3 Be6-/+) 27.Be5= de5 28.Re5 (28.h3 Be6 29.Ne5 Qf4=) 28...f6 (better 28...Bf3!? 29.gf3 Qf6=+) 29.Qd5+= Kh8 30.Re7 Bf3 31.Qc5?? (better 31.gf3 Qg6 32.Kf1=) 31…Qg6 (31...Qg6 32.Qg5 Qb1 33.Qc1 Qc1 34.Re1 Qe1) 0–1. GuestFHRH – GuestXYZT, freechess.org, 2017.

7.Ba1 Qd6 8.Nf3 c6?? 9.Be5+- Qd7 (9...Qd8 10.Bb8 Bg4 11.Bf4+-) 10.Bb8 f6 (10...Qd8 11.Bf4+-) 11.Nd4 (11.d4!? e6+-) 11...e5 12.bc6 (better 12.Nb3!? Qd8+-) 12...bc6 13.Nf3 Qb7 14.Ne5! fe5 15.Be5 Qe7 (15...Nf6 16.Bf6 gf6 17.c4+-) 16.d4 Nh6 (16...Nf6 17.Bd3+-) 17.Be2 (17.c4 Ng4 18.Bg3 Qe6+-) 17...g6?? (better 17...Nf7 18.Bh5 Qg5+-) 18.Bh8 (18.Bh8 Nf7 19.Be5 Ne5 20.de5 Qe5 21.c3+-) 1–0. DEFFM – GuestFALL, freechess.org, 2018.

7.Ba1 Qd6 8.Nf3 Bg4 9.Be2 (9.h3 Bf3 10.Qf3 Nd7=) 9...e6 (9...Nd7 10.Bb2=) 10.Be5+= Qb6 11.0-0 (better 11.Bd4 Qd6 12.Nc3+=) 11...Bd6?? (better 11...Nd7 12.Bd4 Qd6=) 12.Bg7+- Ne7 (12...Bf3 13.Bf3 Nd7 14.Bh8 Qb5 15.e4+-) 13.Bh8 Nd7 (13...Bf3 14.Bf3 Qb5 15.e4+-) 14.Nc3 Bf3 15.Bf3 Ng6 (15...c5 16.Be2+-) 16.Bd4 Qa5 17.Qa1 Qb4 (17...Qa1 18.Ra1 c5 19.bc6 bc6 20.Ra6+-) 18.Qa8 Ke7 19.Rb1 Qa3 20.Qb7 Qa5 (20...h6 21.Bd5! ed5 22.Nd5 Ke6 23.Ra1 Bh2 24.Kh2 Qd6 25.Nf4 Ke7 26.Qe4 Nge5 27.Nd5 Kf8 28.Ra8 Kg7 29.Qg4 Qg6 30.Qd7 Qh5 31.Qh3 Qh3 32.Kh3+-) 21.b6 (21.Qa6!? Qa3+-) 21...cb6 22.Bb6 Qa3 23.Nb5 (23.e4 de4 24.Be4 Bf4+-) 23...Qa2 24.Bd8! Kd8 25.Nd6 Ke7 26.Nf7! Kf7 (26...Qc2 27.d4+-) 27.Qd7 Ne7 28.Bh5 (28.Qb7 Qc2 29.d4 Qc8+-) 28...Kf6 29.Rf1 Qc2 30.Qe8 Qd2 1–0. DEFFM – GuestHDLV, freechess.org, 2018.

7.Ba1 Nf6 8.c4 e6 9.Nf3 Be7 10.Be2 0-0 11.0-0 Ne4 (11...dc4 12.Bc4 Nbd7 13.Qc2=) 12.d4 b6 13.Nbd2 Nd7 14.Ne4 de4 15.Nd2 Nf6 16.Qc2 Bb7 17.Rd1 Qc8 18.c5 bc5 (better 18...Bd5+=) 19.dc5+- c6 20.b6 (20.Ne4?! Ne4 21.Qe4 cb5+=) 20...e5 (better 20...Nd5+-) 21.Be5 Qe6 22.Bf6 Qf6 23.Ne4 Qe5 24.Nd6 Bd6 25.Rd6 f5 (25...h6 26.Bf1+-) 26.g3 (26.Qc4 Kh8+-) 26...g5 Black plans f4 27.Qc4 Kg7 (27...Kh8 28.Qe6 Qe6 29.Re6+-) 28.Qd4 (better 28.Rd7 Kh8 29.Rb7 Qa1 30.Kg2+-) 28...Qd4 29.ed4 f4 (29...Rf6 30.Bd3+-) 30.gf4 Rf4 31.Rd7 Rf7 32.Rf7 (32.Rc7 Rc7 33.bc7 Bc8+-) 32...Kf7 33.Bf3 Ke6 34.Be4 h5 (34...h6 35.Kg2+-) 35.Kg2 Kf6 36.Kg3 h4 37.Kf3 Ba8 38.Ke3 (better 38.Kg4!? Bb7+-) 38...Bb7 39.h3 Ba8 (39...Ke7 40.f4 Kf6 41.Kf3+-) 40.f4 gf4 41.Kf4 Bb7 42.Kg4 (42.Kg4 Ke7 43.Kh4+-) 1–0. BeepBeepImAJeep (2580) – saboy168 (1620), lichess.org, 2017.

5.c4 Bb7 6.Nf3 Nd7 7.Be2 e6 8.0-0 Ngf6 9.a4 Be7 10.cd5 Bd5 11.Nc3 0-0 12.Nd5 Nd5 13.Rc1 Bf6 14.d4 Be7 15.e4 Nf4 16.Bc4 Bg5 17.Rc2 Nf6?? (better is 17...Bh6+/-) 18.Ng5+- h6 19.g3 Ng6 20.e5 hg5 21.ef6 Qf6 22.d5 Qe7 (22...e5+-) 23.de6 fe6 24.Re2 Kh7 (24...Rf7 25.Re6 Qc5 26.Rc6+-) 25.Re6 Qc5 26.Qh5 (26.Qh5 Kg8 27.Rg6 Rf7 28.Rg7 Kf8 29.Qf7) 1–0. rcm06 (1900) – multiplayer, gameknot.com, 2012.

5.c4 e6= 6.Nf3 (6.cd5 ed5 7.Qc2 Ne7=) 6...Bb7 (6...a6 7.cd5 ed5 8.Qa4=) 7.cd5+= Bd5 8.Nc3 Bf3 (8...Bb7!?+=) 9.Qf3+/- Nd7 10.g3 (10.d4 Ngf6+/-) 10...Ne5 (10...Rc8 11.d4+=) 11.Qe4+/- Bd6 12.Bg2 (better is 12.d4 Nf6 13.Qb7+/-) 12...f5? (better is 12...Rb8+/-) 13.Qa8+- Qa8 14.Ba8 Nd3 15.Ke2 Nb2 16.Nd1 (16.Rab1 Nc4+-) 16...Nc4 17.Bc6 (17.Rc1 Na3+-) 17...Ke7 (17...Kf7 18.Rc1 Na3 19.Nc3+-) 18.Rc1 Ne5 (18...Na5 19.Bg2+-) 19.d4 (19.Bg2 Nf6+-) 19...Ng4 (better is 19...Nc6 20.Rc6 Kd7+-) 20.h3 N4f6 21.Rc4 Kd8 (21...Nd5 22.Ra4+-) 22.Ra4 a5 (22...Ke7+-) 23.ba6 (23.ba6 Nh6 24.a7+-) 1–0. Wall,Bill – Cobra, internet, 2002.

5.Be2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd7 9.Nf3 e6 10.Nc3 Qe7 (10...Nf6 11.Ne5+=) 11.Na4 Qb4 12.c3 Qa5 13.c4 (13.Qb3!?+=) 13...dc4=+ 14.Bc4 Bb5 15.Bb5 Qb5 16.Nd4 (16.d3 Bb4 17.Ke2 Nf6=+) 16...Qc4 (16...Qd7 17.0-0-/+) 17.Nf3 (17.d3 Qd5 18.0-0 Nf6=+) 17...Nf6 18.Nb2 Qb5 19.Qc2 Ba3 (19...Qc6 20.Qb1-/+) 20.Nc4 0-0?? (better 20...Be7=+) 21.Na3+- Qa6 22.Bb2 (22.Bf6 gf6 23.Qc3 Nd7+-) 22...c5 23.Ne5 (23.Bf6 gf6 24.Qc3 Nd7+-) 23...Nd5 24.Nac4 (24.Nd3 Rd8 25.Nc4 b5 26.Nc5 Qc6+-) 24...Qa2 (better 24...b5 25.Na3 f6+-) 25.0-0 Nb4 26.Qc3 b5 (26...Nd5 27.Qd3 Qa7+-) 27.Ra1 (27.Ng6 f6 28.Nf8 Nd5+-) 27...Qa1 (27...Nd5 28.Qc2 (worse 28.Ra2 Nc3 29.Bc3 bc4+-) 28...Nb4 29.Qd1 Qa1 30.Ba1 bc4 31.Qg4+-) 28.Ba1 bc4 (28...Nd5 29.Qa5 bc4 30.Qc5 Na6+-) 29.Qc4 1–0. Akrapovik (1610) – Dealan (1650), lichess.org, 2020.

5.Nf3 a6 6.a4 ab5 (6...f6 7.d4+=) 7.ab5 Ra1 8.Ba1 g6?? (better 8...Nf6+=) 9.Bh8+- f6 10.c4 (better 10.Nc3 Nh6+-) 10...e6 (10...Nh6+-) 11.cd5 (11.Qa4 Nd7+-) 11...Qd5 (11...ed5 12.Qa4+-) 12.Nc3 Qd8 13.Bc4 (13.Qa4 Be7+-) 13...Bb4 (13...Nh6 14.Qa1 Be7 15.Ne4+-) 14.Qb3 Kf7 (14...Qd6 15.Nd4 Kf7 16.Ne6 Be6 17.Be6 Qe6 18.Qb4+-) 15.Qb4 Ne7 (15...Nh6 16.Bf6! Qf6 17.Ne4 Qa1 18.Ke2+-) 16.Bf6! Kf6 17.Ne4 Kf7 (17...Kg7+-) 18.Nfg5 Kg7 19.Qc3 Kg8 (19...Qd4 20.Qd4 e5 21.Qe5 Kf8 22.Nh7 Ke8 23.Qc7 Be6 24.Nd6) 20.Ne6 Be6 (20...Qd2 21.Kd2 Be6 22.Be6 Kf8 23.Qf6 Ke8 24.Qf7 Kd8 25.Qf8) 21.Be6 Kf8 22.Qf6 Ke8 23.Qf7 1–0. DEFFM – GuestGRNW, freechess.org, 2018.

5.Nf3 Bd7 6.Be2 (6.Nc3 Nf6+=) 6...a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 e6 10.c4 (10.0-0 Nf6+=) 10...dc4 11.Bc4 Qe7 (11...c6 12.Qa4+=) 12.0-0 h6 (12...c6 13.Qb3+=) 13.Ne5 (13.Be5 Nf6+-) 13...Rh7 (13...Nf6!?+-) 14.Qf3 f6? (better 14...Nf6!?+-) 15.Qa8 (15.Qh5!? Kd8 16.Qg6 fe5 17.Qh7 Nf6+-) 15...fe5 16.Be2 (16.Bd3!? Rh8 17.Bg6 Kd8 18.Qb8 Bc8 19.Be5 Qd7+-) 16...e4 (better 16...Qd8 17.Bh5 g6 18.Bg6 Rf7+-) 17.Bh5+- g6? (17...Kd8 18.Bg6 Rh8 19.Qb8 Bc8+-) 18.Bg6 (18.Qb8?! Kf7 19.Be2 Qd6+-) 18...Rf7 (18...Kd8 19.Qb8 Bc8 20.Bh7 Qh7+-) 19.Qb8 Qd8 20.Bf7 Kf7 (20...Ke7 21.Qd8 Kd8 22.Bg8 Bb5 23.Be6 Bf1 24.Kf1 b5+-) 21.Qd8 (21.Qd8 Bb5 22.Qc7 Ne7 23.Rc1+-) 1–0. DEFFM – canhxinhgai, freechess.org, 2019.

5.c4 e6 6.cd5 ed5 7.Nf3 Nf6 8.Be2 Be7 (8...Bd6 9.0-0=) 9.0-0 0-0 10.Qc2 h6 (10...a6 11.Nc3=) 11.Nc3 (11.Bf6 Bf6 12.d4 cd4 13.Nd4 Bd4 14.ed4 a6=) 11...Be6 (11...Re8 12.a4=) 12.d4 (12.Rac1 a6=) 12...c4 13.e4 (13.a4 Re8=) 13...Nbd7 (13...de4!? 14.Ne4 Ne4 15.Qe4 Bd5=) 14.ed5+= Nd5 15.Bc4 Rc8 (15...N7b6 16.Nd5 Nc4 17.Ne7 Qe7 18.Qc3+=) 16.Qb3 (16.Bd5 Bd5 17.Qd1 Nb6+=) 16...N7b6 17.Nd5 Nc4 18.Ne7 Qe7 19.Rfe1 Qf6 (19...Rfd8 20.Rac1 Qd6 21.a4=) 20.d5+- Bd5?? (better 20...Qb2 21.Qb2 Nb2 22.de6 fe6 23.Re6 Rc2+-) 21.Bf6+- (21.Bf6 Nb6 22.Qe3 Bf3 23.Qf3 gf6 24.Qb7+-) 1–0. DEFFM – GuestMiki, freechess.org, 2020.

5.c4 e6 6.Nf3 Nf6 7.Be2 Be7 8.d4 0-0 9.Nbd2 (9.0-0 a6+=) 9...cd4 (9...Nbd7 10.0-0=) 10.Bd4 Bb4 (10...a6 11.0-0=) 11.0-0 dc4 (11...Nbd7 12.Rc1+=) 12.Nc4+- b6 (12...Nbd7 13.Rc1+-) 13.Qb3 Bc5 14.Rfd1 Qe7 15.Bc5 bc5 16.Nfe5 Bb7 17.Qc2 Nbd7 18.Nc6 Bc6 19.bc6 Nb6 20.Rab1 Nc4 21.Qc4 Rab8 22.Rb5 Rb5 23.Qb5 Nd5 24.Rc1 g6 (24...Qc7 25.Qc5 Rd8 26.Rd1+-) 25.g3 (25.Bf3 Nc7 26.Qc5 Qc5 27.Rc5 Rb8+-) 25...Qd6 26.Qc5 Qc5 (26...Qc7 27.e4 Nf6 28.Qb4+-) 27.Rc5 Rc8 28.e4 Nb4?? (28...Nc7+-) 29.c7 Na2 (29...a5 30.Bb5 Na2 31.Bd7 Rc7 32.Rc7+-) 30.Ba6 Rc7 31.Rc7 Nb4 32.Bb5 a6 33.Be8 a5 (33...f5 34.Bf7 Kf8 35.Be6 fe4 36.Rf7 Ke8 37.Rh7+-) 34.Bf7 Kh8 (34...Kg7 35.Be6 Kf6 36.Bg8+-) 35.Be6 a4 (35...Nd3 36.Ra7+-) 36.Ra7 a3 37.Ra3 Nc2 38.Ra4 Ne1 39.f4 Nd3 40.Bc4 Nc5 41.e5 (41.e5 Na4 42.e6+-) 1–0. Janek – Mitya, internet, 2018.

5.c4 e6 6.Nf3 Nf6 7.Bf6 Qf6 8.Nc3 d4 9.Ne4 Qg6 10.Bd3 (10.Ng3 Bd6=) 10...Qg2=+ 11.Rg1 Qh3 12.ed4 cd4 13.c5 (13.Neg5 Qh5=+) 13...f5 (13...Qh6 14.Qe2=+) 14.Nd6= Bd6 15.cd6 g6 (15...Qh6!?=) 16.Qe2+= Nd7?? (better 16...Rf8+=) 17.Qe6 Kf8 18.Qe7 Kg8 19.Bc4 1–0. DEFFM – GuestGLPV, freechess.org, 2020.

5.c4 Nf6 6.Nf3 Nbd7 (6...e6 7.Bf6 gf6 8.Bd3+=) 7.cd5+- Nd5 8.Bc4 (8.Nc3 e6+-) 8...N5b6 (8...N7b6 9.Be2+=) 9.Qb3 (9.Be2 Nf6+-) 9...e6 10.Be6?? (better 10.Na3+=) 10...fe6–+ 11.Qe6 Qe7 12.Qb3 c4 13.Qc2 Ne5?? (better 13...Nc5 14.0-0 Nd3–+) 14.Ne5 (14.Be5 Qf7 15.0-0 Bg4+-) 14...Be6 (14...Qg5 15.Qe4 (15.Nc4? Qg2 16.Rf1 Bh3–+) 15...Qf5 16.Nc3+-) 15.0-0 0-0-0 16.d4 (16.Bd4 Qc7+-) 16...Kb8 17.a4 Rc8 (17...Qc7 18.Nd2 Bb4 19.Bc3+-) 18.a5 (18.e4 Qc7+-) 18...Nd5 (18...Nd7 19.a6 Ne5 20.de5+-) 19.a6 Nb4 20.Qe4 Bd5 21.Qf4 g5 (21...Rc7 22.e4 Nd3 23.Nd3 Qe4 24.Qe4 Be4 25.Ne5 Bb1 26.Rfb1+-) 22.Nc6 (22.Nc6 Ka8 23.Ne7 gf4 24.Nc8+-) 1–0. GuestWXSH – GuestQVXR, freechess.org, 2019.

5.Be2 A) 5...Qd6 6.Nf3 Nd7 7.0-0 e5 8.d4 cd4 9.Ba3 Qb6=; B) 5...e6 6.Nf3 Nd7 7.0-0 Ngf6 8.c4 Bd6 9.d4 0-0+=; C) 5...Nf6 6.Nf3 Bg4 (6...e6 7.0-0 Bd6 8.c4 0-0 9.d4 dc4+=; 6...a6 7.0-0 Bg4 8.ba6 Na6 9.Nc3 Nc7+=) 7.h3 Bf3 8.Bf3 e6 9.c4 a6=; D) 5...f6 6.f4 a6 (6...Bf5 7.Nf3 e6 8.Nh4 Nh6 9.Nf5 Nf5+=; 6...c4 7.Nf3 a6 8.ba6 Na6 9.0-0 e6+=; 6...Qd6 7.Nf3 Nd7 8.0-0 e5 9.fe5 fe5+=) 7.Nf3 ab5 8.Bb5 Bd7 9.a4 e6=; E) 5...a6 E1) 6.a4 Nf6 (6...f6 7.f4 Bf5 8.Nf3 e6 9.0-0 Bd6+=; 6...e6 7.Nf3 Nf6 8.0-0 Bd6 9.c4 0-0=; 6...ab5 7.ab5 Ra1 8.Ba1 Nf6 9.Nf3 e6=) 7.Nf3 e6 8.Nc3 Be7 9.0-0 0-0=; E2) 6.Nf3 ab5 7.Bb5 Bd7 8.Qe2 e6 9.Ne5 Nf6=.

5.Nf3 e6 6.c4 (6.Be2 Nf6 (6...Nd7 7.0-0 Ngf6 8.c4 Bd6 9.d4 0-0+=) 7.0-0 Bd6 8.c4 0-0 9.d4 b6=; 6.Bd3 Nd7 (6...Nf6 7.0-0 Nbd7 8.a3 Bd6 9.Nc3 0-0+=; 6...a6 7.Nc3 Nf6 8.0-0 Bd6 9.ba6 ba6=) 7.Nc3 Ngf6 8.0-0 Bd6 9.a4 0-0+=) 6...Nf6 7.Be2 (7.d4 Nbd7 8.cd5 Nd5 9.Nc3 a6+=) 7...b6 (7...a6 8.Na3 Bd6 9.0-0 0-0=) 8.0-0 (8.d4 a6 9.cd5 ed5+=) 8...Be7 (8...Bd6 9.d4 0-0+=) 9.Qc2 (9.d4 0-0+=) 9...dc4 (9...a6=) 10.Na3 a6 11.Qc4 ab5 12.Nb5 0-0 13.d4 Ba6 14.dc5 bc5 15.Rad1 Nd5? (better is 15...Qa5 16.a4 Bb7=) 16.e4+- Nb6 17.Qc3 N8d7?? (17...Bf6 18.Rd8 Bc3 19.Rf8 Kf8 20.Bc3 Bb5 21.Bb5 Ra2+-) 18.Qg7 1–0. Buss,Michael – Marlow Jr,Marvin, USCF88N299, 1988.

5.Nf3 Bf5 6.Be2 f6 (6...e6 7.0-0 Nf6 8.Nh4 Bg6 9.f4 Ne4+=; 6...Nf6 7.0-0 e6 8.Nh4 Bg6 9.f4 Nfd7+=; 6...a6 7.0-0 Nf6 8.ba6 Na6 9.Nc3 Nc7+=) 7.0-0 e5 8.Nh4 Be6 9.f4 Qa5+=.

5.Nf3 Nf6 6.Be2 Nbd7 7.c4 e6 8.0-0 Bd6 9.d4 0-0+=.

5.Nf3 Bg4 6.Be2 Nf6 (6...e6 7.h3 Bf3 8.Bf3+=) 7.0-0 (7.h3 Bf3 8.Bf3 e6+=) 7...e6= 8.c4 (8.h3 Bh5=) 8...Be7 (8...Bd6 9.h3 Bf5 10.d4=) 9.h3 Bh5 10.g4 (10.d4 dc4 11.dc5 0-0=) 10...Ng4 (better 10...Bg6!?=) 11.hg4+- Bg4 12.Qa4 (12.d4 cd4 13.Bd4 dc4+-) 12...Nd7 (12...Bf6!? 13.Nc3 h5+=) 13.cd5+- (13.Bg7? Rg8 14.cd5 Rg7–+) 13...ed5?? (better 13...Bf3 14.Bf3 ed5+-) 14.Qg4+- h5 (14...Bf6 15.d4 h5 16.Qg2+-) 15.Qf5 (15.Qg7 Bf6 16.Bf6 Qf6 17.Qf6 Nf6+-) 15...h4 (15...Bf6 16.Bc3 Nb6 17.Bf6 Qf6 18.Qf6 gf6 19.Rc1+-) 16.Qd5 h3 (16...Qb6 17.Bc4 Rf8 18.Rc1+-) 17.Bc4 0-0 18.Qh5 h2 (18...Bf6 19.d4+-) 19.Qh2 (better 19.Kh2 Bd6 20.Kg2+-) 19...Ne5 (19...Nb6 20.Bb3 c4+-) 20.Be5 (better 20.Ne5 Bh4 21.Ng6 Qg5 22.Qg2 Qg2 23.Kg2 Bg5+-) 20...Bf6 21.Qh5 Be5 22.Ne5 Qd2 23.Ng6 Qb2 (23...Qf2 24.Rf2 Rad8 25.Ne7) 24.Qh8 (24.Ne7) 1–0. DEFFM – GuestNYLF, freechess.org, 2018.

5.a4 a6 6.Nc3+/- Bd7 (6...Nf6 7.Nf3+=) 7.Nf3 e6 (7...Nf6 8.Bd3+/-) 8.Bd3 f6?? (better is 8...Nf6+/-) 9.Ne5!!+- fe5 (9...fe5 10.Qh5 Double attack (10.Qh5 Decoy)) 10.Qh5 Ke7 11.Ba3 Kf6 12.Qf3 Kg5 13.g4 (13.Qf8?! Qf8 14.Bf8 Kf6+/-) 13...e4 (13...Be8 14.h4 Kh6 15.g5 Qg5 16.hg5 Kg5 17.Bf8 g6 18.0-0-0 ab5 19.Rdg1) 14.Ne4! de4 (14...de4 15.h4 Mate attack) 15.h4 Kg6 16.Be4 Kh6 17.Qf4 (17.Qf4 g5 18.Bf8 Qf8 19.Qf8#) 1–0. miec – buchoy, internet, 2009.

5.a4 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 dc4 9.Bc4 cb5 10.Bb5 Bd7 11.Bd7 Qd7 12.Nf3 e6 13.0-0 Bd6?? (better is 13...f6+=) 14.Bg7+- f6 15.Bh8 Kf7 (15...Nc6 16.Nc3+-) 16.Nd4 Nh6 (16...Kf8 17.Qb3 Kf7 18.f4+-) 17.Qh5 Kg8 18.Bf6 (18.Qh6!? Kh8 19.Qf6 Kg8 20.Ne6 Nc6+-) 18...Nf5 19.Nf5 ef5 20.Qg5 Kf8 21.Nc3 Nc6 22.Qh6 Kf7 23.Qh7 Kf6 (23...Ke6 24.Qh6 Kf7+-) 24.Qd7 Bh2 25.Kh2 Ne5 26.Qd6 (26.Qd6 Kg5 27.f4 Kh5 28.Kg3 Nf3 29.Rh1 Nh2 30.Rh2) 1–0. Fournier,Frederic (1810) – mangutcor (1705), Active (1/1), 2005.

5.a4 a6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 Qa5 9.Nc3 Bd7 10.Be2 e6 11.0-0 cb5 12.Ne5 Bc6 13.Bh5 g6 14.Ne2 Bg7 15.Bc3 b4?? (better 15...Qc7 16.Nc6 Bc3 17.Nb8 Bg7=) 16.Nc6+- bc6 17.Bg7 (17.Bg7 gh5 18.Bh8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 a6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 Nf6 9.d4 e6 10.Bd3 Be7 11.c4 0-0 12.0-0 dc4 13.Bc4 cb5 14.Bb5 Qb6 (14...Bd7 15.Bd3=) 15.Qe2 (15.Nc3 Nc6+=) 15...Na6 (15...Bd7 16.Bd3+=) 16.Ne5+- Nc7 (16...Nd5 17.Nc3+-) 17.Bd3 Ncd5 18.Rc1 (18.Nc3 Nb4+-) 18...g6 (18...Nb4 19.Bb5+=) 19.Nd2 Kg7 (19...Bd7 20.Bc4+-) 20.Ndc4 (20.Ndf3+-) 20...Qb4 (better 20...Qd8!?+-) 21.e4+- Nf4 22.Qe3 Nd3 (22...N6h5 23.g4 f6 24.gh5 fe5 25.Ne5+-) 23.Nd3 (23.Qd3?! b5 24.Nb6 Bb7+-) 23...Qb3 24.d5 Kg8? (24...Bd7 25.d6 Bd8+-) 25.Nb6 Ng4 (25...ed5 26.Nc8 Bd8 27.Bf6 Bf6+-) 26.Qd4 (better 26.Nc8 Bd8 27.Qd4 e5 28.Ne5 Bf6 29.Ne7 Kg7+-) 26...Bf6?? (better 26...e5 27.Ne5 Bf6+-) 27.e5 Be5 (27...Bg5 28.f4 Bd8 29.Nc8 Qd5+-) 28.Ne5 (28.Qg4?! Ba1 29.Nc8 Bf6+-) 28...f6 (28...Ne5 29.Qe5 f6+-) 29.Ng4 e5 30.Nf6! (30.Nc8?! ed4 31.Bd4 Qa4 32.Nf6 Kg7 33.Ne8 Kg8 34.Nf6 Kg7 35.Nh5 Kg8 36.Nf6=) 30...Kf7 (30...Rf6 31.Nc8 Zwischenzug) 31.Rc7 (31.Nc8?! ed4 32.Ne4 Qb4 33.Ncd6 Ke7=) 31...Kf6 (31...Bd7 32.Rd7 Kf6 33.Qe5) 32.Qe5 1–0. GuestTQXC – GuestTBHK, freechess.org, 2020.

5.a4 c5 6.c4 b6 7.Nf3 Nf6 8.cd5 Nd5 (8...Qd5 9.a5+-) 9.Nc3 (9.Bc4 Bb7+-) 9...Nf6 (9...Bb7 10.Nd5 Bd5 11.Bd3+-) 10.Bc4 (better 10.Be2+-) 10...Bg4?? (better 10...Bb7+-) 11.Ne5+- Bd1 (11...Be6 12.Be6 fe6+-) 12.Bf7 1–0. Janek – Bonubo, internet free game, 2017.

5.a4 Bd7 6.c4 dc4 7.Bc4 cb5 8.ab5 Qb6 9.Na3 Qg6 (9...Nf6!?+=) 10.Qf3+- Bf5?? (better 10...Bc8 11.Bd5 Nd7+-) 11.Qb7+- Be4 (11...e6 12.b6 a6+-) 12.Qc8 1–0. Atotheking (1700) – vadimgav (1630), lichess.org, 2020.

5.a4 Bd7 6.Nf3 a6 7.c4 (7.Be2 Nf6+=) 7...dc4 (7...Nf6 8.bc6 Bc6 9.Nc3=) 8.Bc4+= ab5?? (better 8...e6!?+=) 9.Bf7!+- Kf7 10.Ne5 Ke8 11.Qh5 g6 12.Ng6 hg6?? (12...Bg4 13.Qg4 Nf6 14.Bf6 Rg8 15.ab5 Ra1 16.Ba1 Rg6+-) 13.Qg6 (13.Qh8?! Nf6 14.ab5 Ra1 15.Ba1 Bf5 16.Bf6 ef6=) 1–0. DEFFM – GuestCZWZ, freechess.org, 2018.

5.a4 Bd7 6.Nf3 cb5 7.ab5 b6 8.Ne5 e6 9.Qh5 Qe7 10.Bd3 Nf6 11.Qf3 Ne4?? (better 11...Bc8+/-) 12.Be4+- de4 (12...a5 13.Bd3+-) 13.Qe4 Bb5 (13...Bc6 14.bc6 Qc7+-) 14.Qa8 Qc7 (14...Qd8 15.Ra7 Be7 16.Nf7 Kf7 17.Qf3 Ke8 18.Bg7+-) 15.Ra7 Qe5 (15...Qc8 16.Rb7 Bd6 17.Nf7 Bc7+-) 16.Be5 Bd6 17.Bd6 Bc6 (17...Ba6 18.Qb8 Bc8 19.Qc8) 18.Qb8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Nd7 6.c4 dc4 7.Bc4 e5 8.Qf3 Qf6 9.Qe2 Bc5 10.Nf3 Bd6 11.d4 (11.Nc3 Ne7+=) 11...Ne7 12.0-0 0-0 (better is 12...e4!? 13.Nfd2 Nb6=) 13.Nbd2+/- ed4 14.Ne4 (worse is 14.Nd4 c5 15.Ne4 Bh2 16.Kh2 Qh4 17.Kg1 Qe4=; worse is 14.Bd4 Qg6+=) 14...Qh6 15.Nd6 Nf6?? (better is 15...Qd6 16.Rfd1 Nb6+/-) 16.Nc8 (worse is 16.Nd4 Ng4 17.h3 Qd6 18.hg4 Qg6+-) 16...Rac8 17.Nd4 Ne4 18.Qd3 Qg6 19.bc6 bc6 20.Nb3 (20.Rfd1 Rfe8+-) 20...Rcd8 21.Qc2 Nd5 22.Bd5 Rd5 23.Nd4 Rh5 (23...Rc5 24.Qe2 Rd8 25.f3+-) 24.g3 (better is 24.f3 Nc5 25.Qg6 hg6 26.Nc6 Re8+-) 24...Rh2 (24...c5 25.Nb5 a6+-) 25.Kh2 Qh5 26.Kg2 Ng5 27.Rh1 Qg4 28.Qh7 Nh7+= 29.Rh4 (29.Rh4 Qg6 30.Rah1+-) 1–0. OutOfBounce – ERIC1, Live Game Caissa's Web, 2005.

5.a4 e6 6.Nf3 Nf6 7.c4 dc4 8.Bc4 Bb4 9.Qb3 Ba5 (9...c5 10.0-0+-) 10.Ba3 Bd7 (better 10...Qb6!?+-) 11.0-0+- Qb6 (11...a6 12.Rc1+-) 12.d4 cb5 (12...a6 13.Nc3+-) 13.ab5 a6 (13...Bc8 14.Bd3+-) 14.Bc5 Qc7 (14...Qd8 15.b6 Nc6+-) 15.b6 Bb6 (15...Qd8 16.Ra5 Nc6 17.Ra3+-) 16.Bb6 Qd6 17.Bc5 (better 17.Nc3 Bc6 18.Bc5 Qd7+-) 17...Qc6 (17...Qc7 18.Rc1 b5 19.Bd3+-) 18.Nc3 Nd5 (18...b5 19.Bd3 Qb7+-) 19.Ne5 (better 19.Bd5 ed5 20.Ne5 a5 21.Nd5 Na6 22.Nc6 bc6+-) 19...Qc7 20.Nd5 ed5 21.Bd5 Be6 22.Be6 fe6 23.Qe6 Kd8 24.Rac1 Re8 (24...Nd7 25.Be7 Kc8 26.Qd7 Kb8 27.Qc7 Ka7 28.Nc6) 25.Nf7 Qf7 1–0. DEFFM – GuesFLHC, freechess.org, 2018.

5.a4 e6 6.f4 Nf6 7.Nf3 Be7 8.c4 dc4 9.Bc4 0-0 10.0-0 cb5 11.ab5 Nd5 12.Nc3 Nc3 13.Bc3 Bf6 14.Bf6 Qf6 15.Nd4 b6?? (15...Rd8 16.d3+/-) 16.Nc6 (Better is 16.Qf3 e5 17.Ne2+- (< 17.Qa8 ed4 18.Ra7 Be6 19.Be6 Qe6+-)) 16...Nc6 17.bc6 a5 18.Qf3 Ba6 19.Ba6 Ra6 20.d4 Rc8 21.Rfc1 b5 22.d5?? ed5-/+ 23.Qd5 Rac6 24.Rcb1 Rc5–+ 25.Qb7 b4 26.Ra5-/+ Rc1 27.Rc1 Rc1 28.Kf2 Qh4 29.Kf3 Qh5?? 30.Rh5+- Rf1 31.Ke2 h6 32.Qb4 1–0. bashful – MaSteen22, Live Game Caissa's Web, 2004.

5.a4 Bf5 6.Nf3 h6 7.c4 dc4 (7...Nf6 8.Bf6 ef6 9.Nc3+=) 8.Bc4+= e6 9.0-0 Bb4 (better 9...cb5!? 10.Bb5 Nc6+=) 10.Bg7+- f6?? (better 10...Rh7 11.Bc3 Bd6+-) 11.Bh8 Nd7 (11...Bd3 12.Bd3 Qd3 13.Nd4+-) 12.Nd4 Ne5 (12...Ne7 13.Nf5 Nf5 14.Be6+-) 13.Nf5 Nc4 14.Qh5 (better 14.Qb3 Qd5 15.Ng7 Kf7 16.Qb4 Ne7+-) 14...Kf8 (14...Kd7 15.Qf7 Ne7 16.Bf6 Qf8 17.Qf8 Rf8 18.Be7 Be7 19.Nh6 Bd6+-) 15.Bg7 1–0. GuestTDMH – GuesFLHb, freechess.org, 2018.

5.a4 Bf5 6.Nf3 h6 7.Nd4 Bg6 8.Be2 (8.Bd3 Bd3 9.cd3 Nf6+=) 8...e6 9.a5 (9.0-0 Nf6+=) 9...Bb4 (9...a6!? 10.ba6 Na6=) 10.a6+- ba6 (10...b6 11.Ra4 c5 12.Nf3+=) 11.Nc6+- Nc6 12.bc6 a5 (12...Nf6 13.Ra6 0-0+-) 13.Bg7 Rh7 14.Bd4 (14.Be5 Rc8+-) 14...Qc7 (14...Ne7 15.c3 Bd6 16.Qa4+-) 15.Nc3 (better 15.Na3 a6 16.c3+-) 15...Qc6?? (better 15...a6+-) 16.Bb5+- Qb5 (16...Ne7 17.0-0+-) 17.Nb5 Rc8 (17...Kf8 18.c3 Be7 19.Ra5+-) 18.c3 Bc3 (18...Be7 19.Ra5 Kf8 20.Ra7+-) 19.dc3 Ne7 20.Nd6 Kd7 21.Nc8 Nf5 22.Qa4 Kc8 (22...Kd8 23.Qa5 Kd7 24.Qb5 Kc8 25.Qe8 Kc7 26.Ra7 Kd6 27.Qd7) 23.Qc6 Kb8 (23...Kd8 24.Bf6 Ne7 25.Ra5 a6 26.Ra6 d4 27.Ra8) 24.Rb1 1–0. DEFFM – GuesFLHb, freechess.org, 2019.

5.a4 Bf5 6.Nf3 h6 7.Be2 Nf6+=.

5.a4 Nf6 6.Nf3 +=.

5.a4 h6 6.Nf3 Nf6 7.Be2 e6 8.0-0 Bd6 9.d4 0-0 10.c4 dc4 11.Nbd2 Nd5 (11...c3 12.Bc3 Nd5 13.Qc2+=) 12.Nc4 cb5 (12...Bc7 13.Qc2+=) 13.Nd6+- Qd6 14.ab5 Re8 15.Ba3 Qd8 16.Qb3 b6 17.Ne5 Bb7 18.Bh5 Do you see the mate threat?. White gets strong initiative 18...g6 19.Bg6?? (better 19.Bf3+-) 19...fg6-/+ 20.Qd3 The mate threat is Qxg6 20...Qf6 21.h4 (better 21.Bd6 a5 22.e4=+) 21...Qf5?? (better 21...a5-/+) 22.e4+= Nf4 23.ef5 Nd3 24.Nd3 ef5 (24...gf5 25.Bd6+=) 25.Ne5+- Kh7? (better 25...a6+-) 26.Rac1+- Rg8 (26...Bc8+-) 27.Rc7 Rg7 28.Rfc1 a6 (28...Bd5 29.Bf8 Rc7 30.Rc7 Kg8+-) 29.Bf8 Rc7 30.Rc7 Kg8 31.Ng6 Nd7 32.Rd7 Rf8 33.Nf8 Kf8 (33...Be4 34.ba6 Kf8 35.f3+-) 1–0. DEFFM – GuestXPLY, freechess.org, 2020.

5.Nc3 Nf6 +=.

5.c4 dc4 6.a4 Bd7 (6...Be6 7.Na3=) 7.Bc4 cb5? (7...e6 8.Nf3=) 8.ab5 (8.Bf7 Kf7 9.Qh5 g6 10.Qd5 e6 11.Qb7=+) 8...e6 (8...Nf6 9.Nf3+=) 9.Nf3 Nf6 10.Ne5 (10.Bd4 a6+=) 10...Bd6 11.Ng4 0-0?? (better 11...Be7+=) 12.Nf6+- gf6 13.Qg4 Kh8 14.Qe4 Qc7 (14...Rg8 15.Bd3 Kg7 16.Qb7 Nc6 17.bc6 Be8+-) 15.Bf6 Kg8 16.Qg4 1–0. DEFFM – GuesFLHB, freechess.org, 2018.

5.c4 e6 6.a4 Nf6 7.Nf3 Ng8 8.Be2+= f5 (8...Nf6 9.0-0+=) 9.0-0+- Nf6 10.d4 Bd6 11.Nc3 Nbd7 12.Rc1 0-0 13.bc6 bc6 14.cd5 cd5 (14...Nd5 15.Qc2 Rb8 16.Rb1+=) 15.Nb5+- Be7? (better 15...Bb8+-) 16.Nc7+- a6?? (16...Nb6 17.Na8 Na8+-) 17.Na8 Bb7 (17...Bd6 18.Qb3 Ne4 19.Ba3+-) 18.Nc7 Bd6 (18...Nc5 19.Rc5 Bc5 20.Ne6+-) 19.Ne6 Qe7 20.Nf8 Kf8 21.Ne5 Ne5 22.de5 Be5 23.Be5 Qe5 24.Bf3 (better 24.Qb3 Qe7+-) 24...Ne4 (24...Qe7 25.Qd4 Kg8 26.Qb6+-) 25.Qd4 Qe6 (25...Qd4 26.ed4 Nd6 27.Rc7+-) 26.Rc7 Qc6 27.Qg7 Ke8 28.Qe7 1–0. BeepBeepImAJeep (2680) – scorn, lichess.org, 2017.

5.bc6 bc6 6.Be2 Bb7 7.Nf3 f6 8.d3 e5 9.0-0 Qc8 10.Nbd2 Nd7 11.c4 dc4 (11...Rb8 12.Rc1+=) 12.Nc4 Bc5 (12...c5 13.Nfd2+/-) 13.d4 ed4 14.ed4 Bb6?? (better is 14...Be7+/-) 15.Nd6+- Kd8 16.Nc8 Kc8 17.Rb1 Kc7 18.Qc2 Ne7 19.Bb5 Nd5 20.Rfc1 Rac8 21.Bc6 (better is 21.Qa4 Nb8+-) 21...Kb8 (21...Nb4 22.Qe4 Nc6 23.d5+-) 22.Qa4 Rc7 (22...Bc6 23.Rc6 Bc7 24.Ra6+-) 23.Bb7 (23.Bd7 Rc1 24.Rc1 Nf4+-) 23...Kb7 (23...Rb7 24.Qc6 Nf4 25.Qd6 Bc7 26.Rc7 Ne2 27.Kf1 Rc7 28.Ke2+-) 24.Rc7 Kc7 25.Ba3 (better is 25.Qc4 Kd8 26.Qd5 Bc7+-) 25...Rc8 26.Rc1 Kb7 27.Rc8 Kc8 28.Qc6 Kd8 29.Qd5 Kc7 30.Qd6 Kd8 31.d5 Ke8 32.Nd2 Ne5 33.Qe7 1–0. Fournier,Frederic (1775) – marde42, Active, 2005.

5.bc6 Nc6 6.Nf3 Bg4 7.Bb5 Nf6 8.h3 Bh5 9.d3 (9.g4 Bg6=) 9...a6 10.Bc6 bc6 11.Nbd2 e6 12.0-0 Bd6 13.Qc1 e5 (13...0-0 14.c4+=) 14.Re1 (14.Be5!? 0-0 15.c4+/-) 14...e4 15.Nd4 ed3 (15...Qd7!?=) 16.cd3 Bg6 (better is 16...c5!? 17.Nf5 0-0+/-) 17.Nc6+- Qc7 18.Nd4?? (18.Bf6!? gf6 19.e4 de4 20.Ne4 0-0+-) 18...0-0 (better is 18...Bd3!? 19.Qc7 Bc7+=) 19.Qc7+/- Bc7 20.Rec1 (20.Nc6!? Bd3 21.Ne7 Kh8 22.Bf6 gf6 23.Nd5+/-) 20...Bd6+= 21.Rc6 Be5 (21...Rfd8 22.Rd1 Bd3 23.N2b3+=) 22.Rac1 (22.N2f3 Nd7+/-) 22...Bd4 (22...Bd3!? 23.N2f3 Nd7+=) 23.Bd4+/- (23.ed4?! Bd3 24.R6c3 Bb5=) 23...Bd3 24.Nf3 (24.R6c3 Be4+/-) 24...Bc4 25.Bf6 gf6 26.Rf6 Kg7 27.Rf4 Rab8 28.Rc2 Rb1 29.Kh2 Ra1 30.Nd2 Ra2?? 31.Ra2 Ba2+/- 32.Rd4 Rd8 33.f3 Kf8 34.e4 Ke8 35.ed5 Rd5+= 36.Rd5 Bd5 37.Nb1 a5 38.Nc3 Bc4 39.Na4 Bb3-/+ 40.Nc5? a4–+ 41.Nd3 a3 42.Nc1 a2?? 43.Na2?? Ba2–+ 44.Kg3 Bd5 45.Kf4 Ke7 46.g3 Ke6 47.g4 Kf6 48.h4 Kg6 49.h5 Kh6 50.Ke3 f6 51.f4?! Be6 52.Kf3 f5 0–1. Fournier,Frederic (1800) – manujo (1860), Active, 2005.

5.Nf3 Bd7 6.Ne5 f6 7.Qh5 g6 8.Ng6 hg6 9.Qg6 1–0. Bonetti,Shane – afbp, ICC, 2002.

6.ab5 a6 7.c4 ab5 8.Ra8 bc4 9.Rb8 Qb6 (9...Qc7 10.Be5! Qd7+-) 10.Rc8 (10.Rc8 Kd7 11.Bd4 Qd4 12.ed4 Kc8 13.Qh5+-) 1–0. BeepBeepImAJeep (2585) – Kohly (1780), lichess.org, 2018.

6.ab5 a6 7.Nf3 Nd7 8.Be2 (8.ba6 ba6 9.c4 Ngf6+-) 8...e6 9.c4 Ngf6 10.cd5 Nd5 11.0-0 N7f6 (11...a5 12.Nc3+-) 12.Nc3 (12.ba6 ba6 13.Ne5 Bd7+-) 12...Bd6 13.Nd5 Nd5 (13...ed5!? 14.ba6 ba6 15.Bb5 Bd7 16.Bf6 gf6+-) 14.Bg7 Rg8 15.Bb2 Nf6? (better 15...a5+-) 16.ba6 ba6 17.Qa4 Bd7 18.Qh4 Be7 19.Ne5 (19.Ba6?! Bc6 20.Be2 Ra1 21.Ra1 Rg4+-) 19...Qb6 (19...Rb8 20.Bd4 Bb5 21.Bb5 Rb5 22.Ra6 Qc8+-) 20.Bd4 Qd8 21.Nd7 Kd7 22.Bd1 (better 22.Rfb1 Nd5 23.Qh7+-) 22...Ng4 (22...Nd5 23.Ba4 Kc8 24.Qh7 Rf8 25.Rfc1 Nc7+-) 23.Qh7 Qc7 (23...Bf6 24.Ba4 Kd6 25.Bc5 Kc5+-) 24.Ba4 Kd6 25.Qd3 Bh4 26.Bf6 Kc5 27.Qd4 1–0. DEFFM – GuesFLHb, freechess.org, 2019.

6.ab5 b6 7.Bd3 (7.c4 e6 8.cd5 ed5+-) 7...e6 8.e4 de4?? (better 8...Nd7 9.Nf3 Nc5+-) 9.Be4+- Qd7 10.Ba8 Qb5 11.Bd4 a6 (11...Qd7 12.Nf3+-) 12.Nf3 Bc5 (12...Nd7 13.Na3 Qb4+-) 13.Bg7 Ne7 14.Bh8 Nf5 15.Nc3 Qc4 16.Ra4 Bb4 17.Ne5 Qc5 18.Qh5 Qe7 19.Rb4! Nc6 (19...Qb4 20.Nc6 Double attack (20.Nc6 Decoy)) 20.Bc6 Bd7 21.Bd7 Qd7 22.Nd7 Kd7 (22...Nd6 23.Nb6 Nb7 24.Qg5 Nc5 25.Rd4 Nd3 26.Rd3 f5 27.Rd7 Kf8 28.Qd8) 23.Qf7 Kd6 (23...Kd8 24.Rc4 Ne7 25.Bf6 a5 26.Qe7) 24.Rb6 Kc5 25.Qc7 1–0. DEFFM – GuesFLHb, freechess.org, 2019.

6.ab5 Bd7 7.c4 Nf6 8.Bf6 ef6 9.cd5 Bc5 (9...Bd6 10.d4+=) 10.Bd3 (10.Qc2 Bd6 11.d4+=) 10...0-0 (10...h6!?+=) 11.Qc2 (11.Bh7 Kh7 12.Qc2 f5 13.Qc5 Qg5+-) 11...Qb6 (11...Bd6 12.Bh7 Kh8 13.Bd3+-) 12.Bh7 Kh8 13.Ra4 (13.Nc3 Rc8 14.Bf5+-) 13...Bb5 (better 13...Rd8+-) 14.Rh4+- g5 (14...Re8 15.Qf5 Qc7+-) 15.Bg8!! gh4 (15...Kg8 16.Qh7) 16.Qh7 1–0. Janek – quguqu, internet, 2017.

6.ab5 Bd7 7.Nf3 a6 8.ba6 ba6 9.Be2 Bc8 10.0-0 e5? (10...Nf6 11.Be5+=) 11.d3 (11.Ne5 Bb7+-) 11...e4? (better is 11...f6!?+=) 12.de4+- de4 13.Qd8 Kd8 14.Nd4 (better is 14.Ng5 Ke8 15.Ne4+-) 14...Bc5? (14...Nf6+/-) 15.c3?? (better is 15.Rd1 Nd7 16.Ne6 fe6 17.Bg7+-) 15...Bd4+= 16.cd4 Nf6 17.Nd2 Bg4? (better is 17...Re8!?+=) 18.Bg4+- Ng4 19.Ne4 h5 20.Nc5 Ke7 21.Rfb1 Kf6 (better is 21...Rc8+-) 22.h3 Nh6 23.d5 Kg6 24.Bd4 f5 (24...Kh7 25.e4+-) 25.d6 (better is 25.Rb7 Nf7 26.Ne6+-) 25...Kf7 (25...Nc6 26.Bc3 Rhb8 27.Ne6+-) 26.d7 (26.Rb7 Nd7 27.Rd7 Ke8 28.Re7 Kd8 29.Ne6 Kc8 30.Rc7 Kb8 31.Rb1) 26...Rd8+- 27.Rb7 Ke7 (27...Nc6 28.Rc7 (28.Na6?! Nd4 29.ed4 Ng8+/-; 28.Ra6?! Ra6 29.Na6 Nd4 30.ed4 f4+-) 28...Nd4 29.ed4+-) 28.Rab1 (28.Bg7 Ng8 29.Be5 Nf6+-) 28...Nd7 (28...Nf7 29.Bg7 Nd6+-) 29.Nd7 (better is 29.R1b6 a5 30.Re6 Kf7 31.Rd6+-) 29...Rd7 30.Bc5 (better is 30.Rd7!? Kd7 31.Rb7 Ke6 32.Rg7+/-) 30...Ke8+= 31.Rb8 Rb8 32.Rb8 Kf7 33.Rb6 Rd1 34.Kh2 g5?? (better is 34...Rd5!? 35.Bd4 a5+/-) 35.Ra6 (better is 35.Rh6 Rd2 36.Kg3 h4 37.Kf3+-) 35...g4?? (35...Rd5 36.Rh6 Rc5 37.Rh5+-) 36.Bd4 (better is 36.Rh6!? Rd2 37.Rh5 Kg6 38.hg4 fg4+-) 36...gh3?? (36...Ng8!?+/-) 37.gh3 (better is 37.Rh6 hg2 38.Kg2 Ke7+-) 37...f4?? (37...Ng8+-) 38.Rh6 Rd2 39.Kg2 fe3 40.Be3 Rd3 41.Rh5 Kg6 42.Rg5 Kf6 43.Rg3 Rb3 (43...Rd7 44.h4+-) 44.h4 (44.Bd4 Kf5 45.Rb3 Ke4+-) 44...Rb2 (44...Rb5 45.Rg5 Rb7 46.Bd4 Ke6 47.f4+-) 45.h5 (45.Bd4 Ke7 46.Bb2 Ke6+-) 45...Rb8 (45...Rb7+-) 46.h6 Rh8 (46...Ke5 47.h7 Rh8 48.Rh3+-) 47.Rg7 (better is 47.Bd4 Ke6 48.Bh8+-) 47...Rh6 (47...Ke5 48.f4 Kd6+-) 48.Bh6 Kf5 49.Rg8 Kf6 50.Ra8 Kf5 51.Kg3 Kg6 52.f4 Kh6 53.Kg4 Kg6 54.f5 Kf6 55.Rf8 Kg7 56.Ra8 Kf6 57.Kf4 Kf7 (57...Ke7 58.Ke5 Kd7 59.f6 Kc7 60.f7 Kc6 61.f8Q Kb6 62.Qd6 Kb5 63.Rb8 Kc4 64.Qd4) 58.Kg5 (58.Ke5 Ke7 59.f6 Kf7 60.Ra7 Kf8 61.Ke6 Kg8 62.Rg7 Kh8 63.Rg3 Kh7 64.f7 Kh6 65.f8Q Kh5 66.Qh8) 58...Ke7+- 59.f6 Kf7 (59...Kd6 60.f7 Kc5 61.f8Q Kc6 62.Rc8 Kb7 63.Rc3 Ka6 64.Qb4 Ka7 65.Ra3) 60.Kf5 ½–½. Fournier,Frederic (1785) – supermaikel (1785), Active, 2004.

6.ab5 Nd7 7.Nf3 Nb6 8.d3 Bg4 9.Be2 Bf3 10.Bf3 Nf6 11.0-0 e6 12.Nd2 Be7 13.Be2 Bd6 14.c4 Qc7 15.h3 dc4 16.dc4 0-0 17.Qb3 Rac8? (17...Nbd7!?=) 18.Rfc1 (18.Bf6 gf6 19.Ra7 Ra8+/-) 18...Qe7 (18...Ra8!?+/-) 19.Ra7 Bc5 (19...Bb8 20.Ra2+/-) 20.Bf3 (20.Bf6 gf6 21.Rca1 f5+-) 20...e5? (better is 20...Nc4!? 21.Qc4 Ba7 22.Qc8 Rc8 23.Rc8 Ne8+-) 21.Rb7+- (21.Bb7?! Rc7 22.Ba3 Ba3 23.Qa3 Qd7=) 21...Qe6 22.Ne4 Ne4 23.Be4 f5?! 24.Bd5 Nd5 25.cd5 Qd6 26.Ba3 Ba3= 27.Rc8 Rc8-/+ 28.b6 Bc5 29.f3 f4–+ 30.Kh2 Be3 31.Rc7 Rc7 32.bc7 Qc7 33.d6 Qf7 34.Qb8 Qf8 35.Qc7 h6?? 36.d7+- Bf2 37.Qc8 Bg3 38.Kg1 1–0. OutOfBounce – ERIC1, Live Game Caissa's Web, 2005.

6.ab5 Nf6 7.c4 Nbd7 8.Ne2 (8.cd5!? Nd5 9.Nf3=) 8...dc4=+ 9.Nf4 e5 10.Nh3 (10.Nh5 Nh5 11.Qh5 Qc7=+) 10...Bd6 (10...Nb6 11.Ng5–+) 11.Bc4-/+ 0-0 12.0-0 a6 (12...Nb6 13.Bb3-/+) 13.ba6=+ ba6 14.Qf3 (14.Qe2 e4=+) 14...e4-/+ 15.Bf6? (better 15.Qe2!?-/+) 15...Nf6–+ (15...ef3?! 16.Bd8 fg2 17.Rd1 Rd8 18.Bd5=+; 15...Qf6 16.Qe4 Qa1 17.Ng5 Bh2 18.Kh1+=) 16.Qe2 a5 (16...Bg4 17.f3 ef3 18.Qd3–+) 17.Nc3 (17.Nf4-/+) 17...Bb7 (better 17...Bg4 18.Qe1 Qc7–+) 18.Rfb1=+ Rb8 19.Rb5 Qc7 20.Rba5 Bh2 21.Kh1 Bd6 (21...Be5 22.Ra7=+) 22.Ra7 (22.Nb5 Qd7=) 22...Ra8 (better 22...Be5=+) 23.Nd5?? (23.Nb5 Qe7 24.Bf7 Kf7 (24...Rf7? 25.Ra8 Ba8 26.Ra8 Rf8 27.Qc4 Kh8 28.Rf8 Qf8 29.Ng5+-) 25.Nd6 Qd6 26.Rb7 Kg8 27.Ra8 Ra8 28.Qc4 Kh8+-) 23...Ra7 (better 23...Nd5 24.d4–+) 24.Nc7?? (better 24.Nf6 gf6 25.Ra7=) 24...Ra1–+ 25.Ng1 Bc7 26.g3 (26.f4 Rd8 27.d4 ed3 28.Bd3 Ng4 29.Qg4 Rd3–+) 26...Nd7 (better 26...Rd8 27.Bf7 Kf7 28.Qc4 Nd5 29.Qe4 Rd6–+) 27.Qg4 (27.Kh2–+) 27...Ne5 28.Qf4 (28.Qh3 Nc4 29.Kh2 Ra2–+) 28...Nc4 (better 28...Nf3 29.Qf3 ef3–+) 29.Qc7 Bd5 30.Qc5 Rd8 31.Qc7 Do you see the mate threat? 31...Raa8 32.Kg2 Nd2 33.Ne2 Rac8 34.Qe5 f6 35.Qb2 Nf3 36.Nf4 Rb8 37.Qc3 Bf7 38.Qc6 Ne5 39.Qe4 (39.Qc7 h5–+) 39...Re8 (better 39...g5 40.Qf5 gf4 41.gf4–+) 40.Qa4 Ng4 41.Kf3 Ne5 (41...h5 42.Qc2–+) 42.Kg2 Ng4 (42...Rb2 43.Qd4 Nc4 44.Kg1–+) 43.Kf3 Nh6 (43...h5 44.Qc2–+) 44.Qa7 (44.Qc6 Bb3–+) 44...Nf5 (44...g5 45.Nd3–+) 45.Qd7 Rbd8 (better 45...Ne7–+) 46.Qf5 Be6?? (better 46...g5!? 47.Qf6 gf4 48.Qg5 Bg6 49.ef4 Rd6–+) 47.Qh5 (better 47.Ne6 Rd6 48.Nd4+-) 47...Bf7 (47...h6 48.Ne6 Re6 49.Qc5=+) 48.Qb5 (better 48.Qf5!?=) 48...g5-/+ 49.Nd5?? (better 49.Nd3-/+) 49...Bh5 (better 49...Bd5 50.Kg4 Kg7–+) 50.g4+- Bf7?? (better 50...Rd5 51.Qd5 Bf7+-) 51.Nf6 Kg7 52.Ne8 Be8 (52...Re8 53.Qg5 Bg6 54.Ke2+-) 53.Qe5 (53.Qg5 Bg6 54.Qe7 Bf7 55.Qd8 h6+-) 53...Kg8 (53...Kf7 54.Qf5 Ke7 55.Qg5 Kd7 56.Qf5 Kd6 57.Qd3 Kc7 58.Qh7 Rd7 59.Qh2 Rd6+-) 54.Qg5 Bg6 55.Qd8 Kg7 56.e4 h5 57.gh5 Bh5 58.Ke3 Bg6 59.f3 (59.Qe7 Kh8 60.Kf4 Bf7 61.Qf8 Kh7 62.Kf5 Bc4 63.Kf6 Be6 64.Qg7) 59...Kh6 60.f4 (60.Qh8 Bh7 61.e5 Kh5 62.Qh7 Kg5 63.Qg7 Kh5 64.e6 Kh4 65.Qg4) 60...Kh5 (60...Be8 61.Qe8 Kg7 62.Qd7 Kg6 63.f5 Kf6 64.Qd6 Kf7 65.f6 Kg6 66.Kf4 Kh6 67.Qf8 Kh5 68.Qg7 Kh4 69.Qg4) 61.f5 (61.Qg5) 61...Bh7 (61...Bf7 62.Kf4 Bd5 63.Qg5) 62.f6 (62.Kf4 Bf5 63.Qg5) 62...Kg6 (62...Kg5 63.f7 Kh5 64.Kf4 Kg6 65.f8Q Bg8 66.Qg8 Kh5 67.Qgg5) 63.Qe7 (63.Kf4 Kf7 64.Qe7 Kg6 65.Qg7 Kh5 66.Qh7) 63...Bg8 (63...Kg5 64.f7 Kg4 65.f8Q Bf5 66.Qf5 Kg3 67.Qg6 Kh3 68.Qeh7) 64.Qg7 Kh5 65.Qg8 (65.Kf4 Bf7 66.Qg5) 65...Kh4 (65...Kh6 66.Qg7 Kh5 67.Kf4 Kh4 68.Qg4) 66.f7 (66.Kf4 Kh5 67.Qg5) 66...Kh3 (66...Kh5 67.Qh7 Kg5 68.f8Q Kg4 69.Qf4) 67.f8R (67.f8Q Kh4 68.Qh6) 67...Kh4 (67...Kh2 68.Qg6 Kh3 69.Rh8) 68.Qg7 Kh5 69.Rh8 1–0. aravind555 – GRUT69696, lichess.org, 2020.

5.Nf3 Nd7 =.

5.Nf3 e6 6.Bd3 (6.Ba3 Qb6 7.Bf8 Kf8 8.c4+=) 6...c6 (6...Nd7 7.0-0+=) 7.a4 (7.Be5 Qd8 8.Nc3 Nf6+-) 7...Bd7? (better 7...Nd7!?+-) 8.0-0 Be7? (better 8...Nf6+-) 9.Bg7 Qh2 (9...Bf6 10.Bh8 Bh8+-) 10.Nh2 (better 10.Kh2 Bf6 11.Bh8 Bh8+-) 10...cb5 11.Bh8 Ba3 12.Qh5 (better 12.Na3 ba4 13.Qh5 Nc6+-) 12...Bb2 13.Bb2 Nc6 14.ab5 0-0-0 15.bc6 Bc6 16.Qf7 Nh6 17.Qe6 Kb8 (17...Bd7 18.Qh6 Re8 19.Ra7 Kc7 20.Ba3 Re6 21.Qf4 Kb6 22.Qb8 Bc6 23.Ra6) 18.Be5 Ka8 19.Nc3 Rg8 (19...Nf5 20.Nd5 Bd5 21.Ra7 Ka7 22.Ra1 Ba2 23.Ra2) 20.Ra7! Ka7 (20...Ka7 21.Ra1 Mate attack) 21.Ra1 Kb6 22.Nd5 Kc5 23.Qd6 1–0. GuestLXXH – GuestWXCR, freechess.org, 2020.

5.Nf3 Bg4 6.Ba3 (6.h3 Bf3 7.Qf3 e5+=) 6...Qf6= 7.Nc3 c6 (7...Bf3 8.gf3 e6 9.Bb2=) 8.Be2 Bf3 9.Bf3 d4 (9...Nd7!?=) 10.Ne4 (10.bc6 Nc6 (10...dc3?? 11.cb7 cd2 12.Kd2+-) 11.Qb1 A) 11...dc3 12.Qb7 cd2 13.Ke2 Nd4 14.Kd1 (14.ed4?! Qe6 15.Kd2 Rc8+-) 14...Nf3 15.Qa8 Kd7 16.Qa7 Ke6 17.Rb1+-; B) 11...Rb8+/-) 10...Qe5 11.Bb2 (11.Rb1 f5 12.Nc5 de3 13.de3 Qc3 14.Ke2 Nf6+-) 11...Qb5 12.Bd4 (12.ed4? Qb2 13.Rb1 Qa2 14.Rb7 e6–+) 12...e5 13.Rb1 Qd5?? (better is 13...Qa5 14.Bc3 Qc7+/-) 14.Nf6!!+- Nf6 15.Bd5 cd5 16.Be5 Nbd7 17.Bf6 Nf6 18.Rb7 Bc5 19.c4 0-0 20.d4 Bd6 21.c5 Bb8 22.Qc2 Ne4 23.c6 Bd6 24.c7 Rac8 25.Qc6 Rfe8 26.f3 Bb4 27.Rb4 Nf6 28.Kf2 h5 29.Rhb1 Re7 30.Rb8 Ree8 31.Rc8 Rc8 32.Rb8 (32.Rb8 Kh7 33.Rc8+-) 1–0. pierre – supa, internet, 2010.

5.f4 f6 6.Nf3 (6.c4 Be6+=) 6...Qb4 (6...Bg4 7.h3 Bf5 8.Nd4=) 7.Ba3+= White gets in control 7...Qa5 8.c4 e6 (8...a6 9.Nd4 dc4 10.Bc4 ab5 11.Qh5 g6 12.Qb5 (< 12.Bb5 c6 13.Qc5 Nd7 14.Nc6 bc6 15.Bc6 Qc7-/+) 12...Qb5 13.Nb5+=) 9.Bf8 Kf8 10.cd5 (10.Qb3 Ne7+/-) 10...ed5+= 11.Qb3 Be6 (11...Ne7 12.Nc3 Be6 13.Bd3+=) 12.Nd4+/- Ne7?? (better is 12...Bf7+/-) 13.Ne6+- Kf7 14.f5 g6 15.Nc3 c6 16.e4 gf5 17.ed5 cd5 18.Nd5 Nd7 19.Ndc7 Rac8 20.Nd8 Kg7 21.Nce6 Kg6 22.Qg3 Kh5 23.Be2 Kh6 24.Nf7# (24.Qg7#) 1–0. pcmvr (2560) – dgall (1860), net–chess.com, 2006.

5.f4 Nf6 6.Nf3 =.

5.a4 b6 6.Nf3 Nf6 7.c4 dc4 8.Bc4 c6 9.Ne5 e6 10.Qf3 Qc7 11.bc6 (11.Bd4!?+/-) 11...Nc6= (11...Bc6 12.Nc6 Nc6 13.Bf6 gf6 14.Bb5+-) 12.Nd7 Nd7 13.Bb5 0-0-0?? (better 13...Rc8+=) 14.Bc6+- Ne5 (14...Nc5 15.0-0 Nb3+-) 15.Be5 Qe5 16.Qf7 (16.Qf7 Qc7 17.Qe6 Kb8 18.Bf3+-) 1-0. DEFFM – GuestNFFJ, freechess.org, 2021.

5.a4 c6 6.c4 e6 7.Nf3 a6 (7...Nf6 8.Nc3=) 8.cd5 cd5 (8...ed5 9.Be2=) 9.Be2 ab5 (9...Nf6 10.0-0+=) 10.ab5 Ra1 11.Ba1 Nf6 (11...f6 12.0-0+=) 12.0-0 Qa5 Attacking the isolated pawn on b5 (12...Bd6 13.Be5 Be5 14.Ne5+=) 13.Be5+- Bb5? (better 13...Qd8+-) 14.Bb5 Qb5 15.Bb8 Nd7 (15...Be7 16.Nc3 Qa6 17.Be5+-) 16.Nc3 (16.Bf4 Be7+-) 16...Qa6 (16...Qa5 17.Bf4+-) 17.Be5 (17.Bf4 Be7+-) 17...f6 (17...Ne5 18.Ne5 Bd6 19.d4+-) 18.Bd4 (18.Bg3 Be7+-) 18...Bd6 (18...e5 19.Nd5 Qa2 20.Nb6 ed4 21.Nd7 Kd7 22.Nd4+-) 19.Qb3 (19.Qc2 0-0 20.Qb3 Ne5 21.Be5 Be5+-) 19...0-0 (19...e5 20.Nb5 ed4 21.Qd5+- (21.Nd6?! Qd6 22.Qb7 Kf7+-)) 20.Nd5! ed5 21.Qd5 Kh8 22.Rc1 Nb8? (better 22...Qa3 23.Rb1 Rc8+-) 23.Ng5! fg5 24.Qg5 Rf7 (24...Bh2 25.Kh2 Qg6 26.Qg6 hg6+-) 25.Rc8 Rf8 (25...Bf8 26.Rf8! Rf8 27.Qg7) 26.Qg7 1–0. Anonymous – Anonymous, lichess.org, 2020.

5.a4 c6 6.Nf3 cb5 7.ab5 Nf6 8.Ne5 (8.c4 e6+-) 8...e6 9.Bd3 Bd6 10.f4 0-0 11.0-0 Qb6 12.c4 (better 12.Bd4 Bc5 13.Nf3+-) 12...dc4?? (better 12...Nc6+-) 13.Nc4+- Qb5 (13...Qc5 14.Bf6 gf6 15.Nd6 Qd6 16.Bh7 Kh7 17.Qh5 Kg7 18.Qg4 Kh8 19.Rf3 Qd3 20.f5 Qf5 21.Rh3 Qh7 22.Rh7 Kh7 23.Qh4 Kg6 24.Qg3 Kf5 25.e4 Ke4 26.Nc3 Kd4 27.Qd6 Kc4 28.Ra3 Bb5 29.d3) 14.Bf6 (14.Nd6?! Qb2 15.Nc3 Qb4=) 14...gf6 (14...Qd5 15.Bh7 Kh7+-) 15.Qg4 (15.Nd6?! Qd3 16.Nb7 Rc8+-) 15...Kh8 16.Qh4 f5 17.Rf3 Rg8 18.Qf6 Rg7 19.Nd6 Qd3 (19...h5 20.Rg3 Qb2 21.Nf7 Kg8 22.Rg7 Kf8 23.Ne5 Ke8 24.Qe7) 20.Nf7 Kg8 21.Nh6 Kh8 22.Qf8 Rg8 23.Qg8 1–0. DEFFM – GuesFLHb, freechess.org, 2019.

5.c4 dc4 6.Bc4 Nf6 7.Nf3 e6 8.0-0 Be7 9.e4 0-0 10.e5 Nd5 11.d4 Nb6 12.Bd3 a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 c6 16.Qc2 Nd5 17.Bh7 Kh8 18.bc6 Bc6 19.Be4 Nb4 20.Qe2 N8a6 21.Ng5?? (better is 21.Nc3+/-) 21...Bg5–+ 22.f4 Bh6 23.g4 (23.Nd2 Qh4–+) 23...f5 (23...Be4!? 24.Qe4 f5 25.ef6 Qf6 26.f5–+) 24.ef6 (24.Bc6 Nc6 25.g5 Bg5 26.fg5 Qg5 27.Kh1-/+) 24...Rf6 (better is 24...Qf6 25.g5 Bg5–+) 25.g5-/+ Bg5 26.fg5 Rf1 27.Kf1 Qg5 28.Bc6 Nc6 29.Qe6 Qc1 30.Kg2 Qb1 31.Qh3?? (31.Qe8 Kh7 32.Qh5 Kg8 33.Qe8 Kh7 34.Qh5 Kg8 35.Qe8 Kh7=) 31...Qh7?? (better is 31...Kg8 32.Qe6 Kh7 33.Qh3 Kg6 34.Qe6 Kg5 35.Qe3 Kf6–+) 32.Qc8= Qg8 33.Qb7?? (better is 33.Qh3 Qh7 34.Qc8 Qg8 35.Qh3 Qh7=) 33...Qd5–+ 34.Kg1 Qg5 35.Kf2 Qd2 36.Kf3 Nd4?? (better is 36...Qd3 37.Kf4 Qf1 (< 37...Nd4 38.Qa8 Kh7 39.Qe4 Qe4 40.Ke4–+) 38.Kg3 Nab4 39.Qc8 Kh7–+) 37.Kg4?? (better is 37.Bd4 Qd4 38.Qa6 Qd5 39.Kf4=) 37...Qd1–+ (38.Kh4 Qe1 39.Kg4 Qg1 40.Kh3 Qa1 41.Qa8 Kh7 42.Qe4 Kh6 43.Qh4 Kg6 44.Qg4 Kf6 45.Qh4 Ke5 46.Qg3 Kd5 47.Qg5 Kc4 48.Qg7 Nc5–+) 0–1. chevin – karen, Live Game Caissa's Web, 2004.

5.c4 Nf6 6.Qb3 dc4 7.Bc4 e6 8.Nf3 Be7 9.d4 (9.0-0 a6+=) 9...0-0 (9...c6 10.Nc3=) 10.Nbd2 (10.0-0 a6=) 10...c6 11.a4 cb5 12.ab5 Qc7 13.Rc1 (13.b6 Qc8+/-) 13...Qb6 14.0-0 a6 15.ba6 (15.Ra1 Rc8+=) 15...Qb3= 16.Nb3 Na6 17.Rfe1 (17.Ne5 Ba4 18.Na5 Nc7=) 17...Nb4 (17...Rfc8 18.Ne5=) 18.e4 (18.Nc5 Rfc8=) 18...b5 19.Bf1 Ra2 20.Bc3 Nc2 (20...Ra3 21.Nc5 Na2 22.Bb2 (22.Nd7 Nd7 23.Bb5 Nc1 24.Rc1 Nf6-+) 22...Rf3 23.gf3 Nc1 24.Nd7 (24.Bc1?! Rd8=) 24...Nd7 25.Rc1+/-) 21.Re2 Nb4?? (better 21...Ra3=) 22.Bb4+- (22.Bb4 Re2 23.Be7+- (23.Be2?! Bb4 24.Ne5 Rb8+=)) 1-0. zembelek (2020) - 101010 (2130), Rated Blitz game, lichess.org, 2014.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 b6 9.c4 (9.Be2 f6+=) 9...Bg4 (9...e6 10.Be5+=) 10.h3 Bf5 11.Nc3 (11.cd5 Qd5 12.Nc3 Qd6+-) 11...e6 12.cd5 (12.Be2 dc4 13.Bc4 Bd6+=) 12...ed5 13.Nd4 Be4 (better 13...Bg6!?+=) 14.Ne4+- de4 15.Nf5 (15.Qc2 Nf6+-) 15...Qg5 (15...Ne7 16.Bg7 Rg8 17.Ne7 Qe7 18.Bc3+-) 16.g4 1–0. DEFFM – GuestLMJH, freechess.org, 2016.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 dc4 (9...Nf6 10.bc6 Bc6 11.cd5 Qd5 12.Be2+-) 10.Bc4 cb5 (better 10...Nf6!? 11.Nc3 e6+-) 11.Bf7!+- Kf7 12.Ne5 Ke8 13.Qh5 g6 14.Ng6 Nf6?? (14...Bg4 15.Qg4 Nf6+-) 15.Bf6 hg6 (15...Bg4 16.Qb5 Qd7 17.Qd7 Nd7 18.Bh8 hg6+-) 16.Qg6 1–0. GuestTFGS – GuestVTQK, freechess.org, 2020.

5.Nf3 a6 6.ba6 Ra6? (better is 6...Na6 7.Be2 e6=) 7.Ba6+- Na6 8.Ba3 f6 9.Nh4 b5?? (better is 9...g6+-) 10.Qh5 g6 11.Ng6! (11.Qd5?! c6 12.Qd3 Qa5+-) 11...Bg7 (11...hg6 12.Qg6#) 12.Nh8 (12...Kf8 13.Qf7#) 1–0. cagey – janoc, Live Game Caissa's Web, 2004.

5.Nf3 c5 6.a4 a6 7.c4 e6 8.d3 (8.d4 cd4 9.Bd4 ab5 10.ab5 Ra1 11.Ba1 Nf6+=) 8...Nf6= 9.Nbd2 dc4 (9...Bd6 10.e4 Be7 11.Be2=) 10.dc4+= Qc7 (10...Be7 11.Be2+=) 11.Be2 Bd6 12.0-0 0-0 13.h3 (13.a5 Rd8+-) 13...ab5 (13...e5 14.Qc2+=) 14.ab5 Ra1 15.Ba1 (15.Qa1 Be7+-) 15...b6 (15...e5 16.Qc2+=) 16.Bf6+- gf6 17.Qc2 (17.Ne4 Be7+-) 17...f5+= 18.Ra1 f6 19.Bd3 Be8 20.e4 Bg6? (20...fe4 21.Ne4 Bf4 22.Ng3+=) 21.Nh4 (better 21.ef5!? ef5 22.Bf5+-) 21...Be5 (21...fe4 22.Be4 Bh5 23.Ra8=) 22.Re1 Bd4? (22...fe4 23.Be4 Bh5 24.Nhf3+=) 23.Ng6 (better 23.ef5!? ef5 24.Bf5 Bf5 25.Nf5+-) 23...hg6+= 24.Nf3 Kg7 25.Nd4 cd4 26.Qe2 (26.ef5 ef5 27.Qa2 Rd8+-) 26...e5 (better 26...f4!?=) 27.ef5 gf5 (better 27...g5!?+-) 28.Bf5+- Nd7? (28...Re8+-) 29.Qg4 Kf7 30.Bd7 Qd7 (30...Qc4 31.Ra1 Qc7+-) 31.Qd7 (31.Qd7 Kg6 32.Re4 Rh8 33.Rg4 Kh5 34.Qf5 Kh6 35.Qg6) 1–0. e4_e5_f4 (1710) – Woma (1715), lichess.org, 2020.

5.Nf3 c6 6.bc6 Bc6 7.Be2 Nf6 8.0-0 e6 9.d4 Be7 10.c4 0-0 11.cd5 Bd5 12.Nbd2 Nc6 13.a3 Rb8 (13...Qb6 14.Rb1=) 14.Rb1 Qa5 15.Qc2 Ba3 (better is 15...Rfc8!? 16.Qd3 b5=) 16.Ba3 (16.Ba3 Qa3 17.e4+=) 1–0. Fournier,Frederic (1680) – alaraque, Active, 2005.

5.Nf3 c6 6.Be2 cb5 7.0-0 e6 8.Nc3 Be7 (8...b4 9.Nb5=) 9.Bb5 (9.Nb5 Nf6+=) 9...Nh6 (better is 9...Bb5!? 10.Nb5 Nf6=) 10.Bd7+/- Nd7 11.Ne2 (better is 11.Nd5!? ed5 12.Bg7+/-) 11...0-0= 12.d4 (12.Nc3 Qc7=) 12...Rc8 (12...Qc7 13.Qd3+=) 13.a4 (13.Qd3 Qc7 14.Rfc1 Nf5+=) 13...Nb6 (13...Qc7 14.Bc3-/+) 14.a5 (14.Ba3 Ba3 15.Ra3 Qc7+=) 14…Nc4 (14...Nc4 15.Bc3 Qc7+=). makaveli1982 – champ359, internet, 2007.

5.Nf3 Qd7 6.a4 f6 7.Be2 g6 8.0-0 Bg7 9.d4 Nh6 10.Nbd2 Nf7 11.c4 c6 12.Rc1 (12.cd5 cd5 13.Nb3 Qd8+-) 12...dc4 13.Nc4 Bc4 14.Bc4 0-0 (better 14...Nd6!? 15.bc6 Nc6+-) 15.Qb3+- e5 (better 15...cb5 16.ab5 Qe8+-) 16.de5 fe5 17.Be5 Be5 (17...Kh8 18.Bg7 Kg7 19.Qb2 Kh6+-) 18.Ne5 Qf5 (18...Qc7 19.Nf7 Rf7+-) 19.Nf7 Rf7 (19...Kg7 20.Nd6 Qf6 21.Nb7 cb5 22.Bd5 ba4 23.Qa4+-) 20.e4! Qf4 (20...Qe4 21.bc6) 21.g3 (21.bc6 Nc6 22.Qb7 Raf8 23.Bf7 Rf7 24.Qc6 Re7+-) 21...Qf6 (21...Qc7 22.Rfd1 Kg7 23.Bf7 Qf7 24.Qc3 Kh6 25.Rd8+-) 22.e5! Qf5 (22...Qe5 Theme: Deflection from c6 23.bc6) 23.Be6 Qe5 24.Bf7 Kh8 (24...Kg7 25.bc6 Nc6 26.Qb7+-) 25.bc6 Nc6 26.Qb7 Rf8 (26...Rb8 27.Qc6 (worse 27.Rc6 Rb7 28.Bc4 Rb4=) 27...Rf8 28.Qb7+-) 27.Rc6 Qf5 28.Ba2 (28.Qb2 Qf6 29.Qf6) 28...h5 (28...Qd7 29.Qd7 h5 30.Rg6 Rf7 31.Qf7 a6 32.Rg8) 29.Qb2 (29.Rc7 Qf2 30.Rf2 Rf7 31.Rff7 g5 32.Qc8) 29...Kh7 30.Rc7 Kh6 (30...Rf7 31.Bf7 Qf7 32.Rf7 Kh6 33.Qd2 g5 34.Qd6) 31.Qg7 Kg5 32.Qe7 (32.f4 Kg4 33.Qe7 Qc5 34.Rc5 Rf6 35.Be6 Re6 36.Qe6) 32...Kg4 (32...Qf6 33.f4 Kg4 34.Be6 Qe6 35.Qg5 Kh3 36.Qh4) 33.Rc4 (33.h3 Kh3 34.Qh4) 33...Kh3 (33...Qe4 34.h3! Kh3 35.Qh4 Qh4 36.Rh4) 34.Rh4 (34.Qh4) 1–0. BeepBeepImAJeep (2580) – lucianobonfico (2260), lichess.org, 2016.

5.Nf3 f6 6.Be2 e5 7.d3 Bd6 (7...Bb5 8.0-0=+) 8.a4 Ne7 9.0-0 0-0 10.Nbd2 c5 11.c4 d4 12.ed4 ed4 13.Bd4?? (better 13.Ne4 Bf5 14.Re1=) 13...cd4-/+ 14.Nd4 Be5 15.N2f3 a6 16.Qb3 Kh8 17.Ne5 fe5 18.Nf3 Ng6 19.d4 ed4 (19...Nf4 20.Qe3 Bg4 21.de5 Ne2 22.Qe2 Bf3 23.gf3 Qg5 24.Kh1–+) 20.Nd4-/+ Nf4 21.Bf3 ab5 22.Bb7? (better 22.cb5!? Bc8 23.Qe3-/+) 22...ba4 23.Qb4 Ra5 24.Ra3 Rg5 25.Nf3? (25.Kh1–+) 25...Rg2 26.Kh1 Nc6 (better 26...Bh3 27.Nd4 Rg6–+) 27.Bc6 (27.Qa4 Qe7 28.Raa1–+) 27...Bc6 28.Re3 Ne2 (better 28...Rf6 29.Qe7 Qc8–+) 29.Kg2 (29.Qf8 Qf8 30.Kg2–+) 29...Bf3 (29...Rf3 30.Rb1 Re3 31.Kf1 Bg2 32.Ke1 Re6 33.Qf8 Qf8 34.Rb2 Ng1 35.Kd1 Qf3 36.Kc1 Qc3 37.Kb1 Re1 38.Ka2 Qc4 39.Ka3 Ra1 40.Ra2 Ra2) 30.Rf3 Qg5 (better 30...Rf3 31.Rd1 Qa8 32.Qa4 Qe4–+ (32...Qa4?? 33.Rd8 Qe8 34.Re8 Rf8 35.Rf8)) 31.Rg3 (31.Kh1!? Rg8 32.Rf8 Nf4 33.Rg8 Kg8 34.Qb8 Kf7+-) 31...Nf4 (better 31...Qf6!? 32.Ra3 Kg8+-) 32.Kh1+- Qh5?? (better 32...Qf5+-) 33.Qf8 1–0. avz81 (1695) – appy01 (1700), lichess.org, 2018.

5.Nf3 Nf6 6.a4 g6 7.Be2 Bg7 8.0-0 0-0 9.c4 dc4 10.Bc4 Bg4 11.h3 Bh5? (better 11...Bf5!?+=) 12.g4+/- Ng4 13.Bg7 Nf2 (13...Kg7!? 14.hg4 Bg4+/-) 14.Rf2+- Kg7 15.Qf1 e6 (15...Bf3 16.Rf3 e6 17.d4+-) 16.Nd4 Nd7? (16...Qg5 17.Kh1 Qe7 18.Be6 c5 19.bc6 Nc6 20.Nc6 Qe6+-) 17.Rf7!! Rf7 18.Ne6 Kg8 (18...Kh6 19.Qf7 Qf6 20.Qf6 Nf6+-) 19.Nd8 Rd8 20.Qf7 Kh8 21.Qe7 Nf8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 Nf6 6.Nc3 e6 7.Be2 Be7 8.0-0 0-0 9.d3 c5 10.Re1 a6 11.a4 ab5 12.ab5 Ra1 13.Qa1 Qb6 14.Qa4 Na6 15.Ra1 Nc7 16.Qa7 Qa7 17.Ra7 Rb8 18.h4 Nb5 (18...Bb5!? 19.Nb5 Nb5=) 19.Nb5+= Bb5 20.Be5 Rc8? (better is 20...Re8 21.Rb7 Bc6+=) 21.Rb7+- 1–0. orane – tudor1, caissa.com, 2007.

5.Nf3 h6 6.a4 (6.c4 e6+-) 6...a5 (6...Nf6 7.c4+-) 7.Be2 (7.c4 e6+-) 7...b6 (7...Nf6!?+-) 8.0-0 c5 (8...Nf6 9.c4 e6 10.Qb3+-) 9.d4 c4 (9...cd4 10.Bd4 Bg4 11.Nc3+-) 10.Nc3 (10.e4 e6 11.Ne5 Bb4+-) 10...Bg4? (10...Nf6 11.Ne5 Be6 12.Bf3+-) 11.Ne5 (11.e4 de4 12.Ne4 Nd7 13.Bc4 Ngf6 14.Nf6 gf6+-) 11...Be2 12.Qe2 (12.Ne2?! Nf6+-) 12...f6 (12...Nf6 13.e4 e6 14.ed5 Nd5+-) 13.Qh5 (13.Qh5 g6 14.Qg6) 1–0. GuestWQFZ – GuestGVLF, freechess.org, 2019.

6.a4 Nf6 7.Nc3 Bb4 8.Be2 (8.Bd3 0-0 (8...c5 9.Be2 c4 10.Na2 Bd6 11.d3 cd3 12.Bd3=; 8...Qe7 9.Ne5 Bd6 10.Ng4 Ng4 11.Qg4 Qf6 12.Qh5=; 8...a6 9.0-0 0-0 10.Ne2 Ne4 11.c4 Nc5 12.Bb1+=) 9.0-0 Qe7 10.Ne5 c5 11.Be2 a6 12.ba6=; 8.Ne5 0-0 (8...Bc8 9.Be2 Bd6 10.f4 Nbd7 11.Nd7 Qd7 12.0-0=; 8...Bd6 9.f4 Bc8 10.Qf3 0-0 11.Qg3 Nbd7 12.Be2=; 8...Be7 9.Be2 Bd6 10.Nd7 Nbd7 11.a5 a6 12.ba6=) 9.Qf3 Bd6 10.Nc4 Be7 11.Be2 c5 12.Ne5=) 8...Bc3 (8...Bd6 9.Ba3= Ba3 10.Ra3 0-0 11.Rb3 c5 12.bc6=; 8...0-0 9.0-0 Bd6 10.Ba3 Ba3 11.Ra3 Qe7 12.Rb3=; 8...a6 9.Ne5 0-0 10.0-0 Bd6 11.f4 Bc5 12.Qe1+=; 8...c5 9.Na2 Ba5 10.0-0 0-0 11.c4 a6 12.Qc2+=) 9.dc3 0-0 (9...c6 10.0-0 cb5 11.ab5 a6 12.c4+/-) 10.0-0 c6 (10...a6 11.c4 c6 12.cd5+=) 11.c4 (11.Qd4 Re8 12.c4+/-) 11...Qe7 (11...a6 12.cd5+=) 12.Qd3 (12.Qd4+/-) 12...Ne4 (12...dc4 13.Qc4 Rd8 14.Rfd1+/-) 13.Ba3 Nd6 14.e4! Qd8?? (14...de4 15.Qd6 Pinning (15.Qd6 Deflection); 14...Ne4 15.Be7 Pinning (15.Be7 Deflection)) 15.Bd6+- Re8 16.e5 f6 17.ef6 Qf6 18.Ne5 Bc8 19.Bh5 Nd7 (19...g6 20.Be2 Rd8+-) 20.Bf7 Kh8 21.Ng6 hg6 (21...Qg6 22.Bg6 hg6 23.Qg6 Nf6+-) 22.Qh3 Qh4 23.Qh4 1–0. Janek – Vesely, internet, 2016.

6.a4 Nf6 7.Nc3 Bd6 A) 8.Be2 Qe7 (8...0-0 9.0-0 e5 10.Ba3 Bg4 11.d4 Bf3 12.Bf3=; 8...e5 9.0-0 0-0 10.Ba3 Be6 11.d4 e4 12.Ne5=; 8...a6 9.ba6 Na6 10.Nb5 Be7 11.0-0 0-0 12.Ne5=) 9.d3 e5 10.0-0 0-0 11.Qd2 a6 12.ba6+=; B) 8.Ba3= Ne4 (8...Ba3 9.Ra3 Qe7 10.Rb3 e5 11.Be2 0-0 12.0-0=; 8...0-0 9.Bd6 cd6 10.Be2 Ne4 11.0-0 Nc3 12.dc3=; 8...a6 9.Bd6 cd6 10.Bd3 e5 11.Be2 0-0 12.0-0=) 9.Be2 Nc3 10.dc3 Ba3 11.Ra3 a6 12.Rb3=; C) 8.Rb1 e5 (8...0-0 9.d4 Bb4 10.Bd3 c5 11.dc5 Qa5 12.Qd2=) 9.Be2 0-0 10.0-0 c5 11.bc6 Nc6 12.Nb5=.

6.a4 Nf6 7.Be2 a6 =.

6.c4 dc4 7.Bc4 c6 8.a4 a6 9.Ne5 (9.ba6 Na6 10.0-0 Nf6+=) 9...ab5= (9...cb5? 10.Qf3 Nh6 11.Qb7 bc4 12.Qa8+-) 10.Qh5 g6 (10...Nh6 11.ab5 Ra1 12.Ba1 cb5 13.Nd7 bc4 14.Nf8 Kf8 15.Qc5 Kg8 16.Qc4+=) 11.Qf3+= f6 (11...Qf6 A) 12.Nd7?? Qb2 13.Be6 fe6 (13...Qa1?? 14.Qf7 Kd8 15.Qf8 Kc7 16.Qf4 Kd8 17.Qd6 Qb1 18.Ke2+-) 14.Qf8 Kd7–+; B) 12.ab5 Ra1 13.Ba1 Qf3 14.Nf3+=) 12.Nd7+- Qd7 13.ab5 (13.Bf6?? Nf6 14.Qf6 Bg7 15.Qe6 Qe6 16.Be6 Ba1 17.ab5 cb5–+) 13...cb5?? (better 13...Ra1 14.Ba1 Be7+-) 14.Ra8+- (14.Ra8 Bd6 15.Bf6 Nf6 16.Qf6+-) 1–0. Anonymous – Anonymous, lichess.org, 2020.

6.c4 dc4 7.Bc4 c6 8.Ne5 cb5 9.Qf3 Qc7?? (better 9...Nf6 10.Qb7 Na6 11.Qa6 bc4+-) 10.Qf7+- Kd8 11.Qf8 Be8 12.Be6 Qe5 (12...Qe7 13.Nf7 Kc7 14.Qe7 Ne7 15.Nh8 Nd7+-) 13.Be5 (13.Be5 Ne7 14.Qh8+-; 13.Bg8 Qb2 14.0-0 Nd7=+ (worse 14...Qa1 15.Nc3 Qb2 16.Qg7 Rg8 17.Qg8+=)) 1–0. GuestFNQF – GuestTRCM, freechess.org, 2019.

5.d4 Ngf6 6.a4 e6 7.a5 (7.Nf3 c5=) 7...a6=+ 8.c4 ab5 9.cd5 (9.cb5 Ne4 10.Qb3 c5 11.bc6 bc6=+) 9...ed5 (9...Bb4!? 10.Bc3 Bc3 11.Nc3 b4 12.de6 fe6=+) 10.Bb5-/+ c6 Attacking the isolated pawn on a5 11.Bd3 Ra5 12.Nd2 Ra1 13.Qa1 Bb4 14.Ngf3 (14.Bc3 Bd6=+) 14...Ne4-/+ 15.Qa4 Bd2 16.Nd2 Nd2 17.Kd2 0-0 18.Ke2 (18.Qc2 Qg5 19.g3 Nf6-/+) 18...f5 (18...Qh4!?-/+) 19.g3 Nf6 (19...Qg5 20.Qd1=+) 20.f3 Qe7?? (better 20...Re8 21.Kf2 g5=+) 21.Ba3+- Qf7 22.Bf8 Qf8 23.Ra1 g5 (23...Ne8 24.Qc2+-) 24.Qc2 (24.Qa5 g4 25.Qc7 gf3 26.Kf3 Bd7+-) 24...Qh6 (24...g4+-) 25.h4 f4? (25...Kg7 26.Bf5 Bf5 27.Qf5 Qg6 28.Qg5 Qg5 29.hg5 Ne8+-) 26.Ra8 Qf8 (26...Ne8 27.Bf5 Nd6 28.Bc8 Kg7+-) 27.hg5 Nh5 (27...Ne4 28.gf4 Nd6 29.Bh7 Kf7+-) 28.Bh7 Kh8 29.gf4 Ng3 (29...Qe8 30.Kf2 Ng7 31.Qb1+-) 30.Kf2 Nh5 31.Bf5 (31.Qg6 Ng7 32.Qh6 Qe8 33.Bg6 Kg8 34.Qh7 Kf8 35.Qh8 Ke7 36.Qg7 Kd6 37.Be8 Be6 38.Rd8 Bd7 39.Qd7) 31...Bf5 32.Rf8 (32.Rf8 Kg7 33.Qf5 Nf6 34.Qf6 Kh7 35.Qf7) 1–0. GuestCMGY – GuestDYZF, freechess.org, 2019.

5.d4 Ngf6 6.Bd3 e6 (6...c5 7.dc5 Nc5 8.Nf3=) 7.Nf3 h6 (7...c5 8.dc5 Nc5 9.0-0=) 8.0-0+= Bd6 9.Nbd2 c6 10.c4 Bc7 (10...cb5 11.c5 Be7 12.Bb5+=) 11.Ba3 (11.bc6 bc6 12.Rb1 Bb7+-) 11...a6 (11...dc4 12.Bc4 cb5 13.Bb5+=) 12.bc6+- bc6 13.cd5 cd5 14.Qa4 a5?? (better 14...Rb8+-) 15.Qc6+- Rb8 (15...Bd6 16.Bd6 Ra7+-) 16.Qe6!! fe6 (16...fe6 17.Bg6 Mate attack) 17.Bg6 1–0. onur604 (2320) – Ahmadkhatab (1950), lichess.org, 2020.

5.Nf3 e6 6.d4 c6 7.a4 (7.c4 Ngf6+=) 7...Bb4 (7...Ngf6 8.Nbd2+=) 8.c3 Bd6 9.Bd3 (9.c4 Ne7+=) 9...cb5 (9...Ngf6 10.Nbd2=) 10.ab5+= Ngf6 11.0-0 h5 (11...e5!? 12.de5 Ne5 13.Ne5 Be5+=) 12.Nbd2+- h4 (12...Nb6!?+-) 13.c4+- Ng4 (better 13...h3 14.gh3 Bb4+-) 14.h3 Nh6 15.c5 Bb8 16.Ba3 g5 (16...Nf6 17.c6+- (17.Nh4?! g5 18.Nhf3 g4+-)) 17.c6 bc6 (17...g4 18.cd7 Bd7 19.Ne5 gh3 20.gh3 Be5 21.de5+-) 18.bc6 Nf6 (18...g4 19.cd7 Bd7 20.Ne5 Be5 21.de5 gh3 22.gh3 Qg5 23.Kh1 Qe5 24.Rb1+-) 19.Qa4 Bc7 20.Ng5 Nhg4 (20...Rg8 21.Ngf3 e5 22.de5 Bh3 23.Nh4 Ne4 24.Ne4 de4 25.Qe4 Rg4+=) 21.hg4 Ng4 22.f4 Ne3 (22...Rg8 23.Rfe1+-) 23.Rae1 Nf5 (23...a5 24.Re3 Qf6 25.Nb3+-) 24.Bf5 (24.Bf5 Qf6 25.Qb4+-) 1–0. GuestVRBC – egoy, freechess.org, 2020.

5.Nf3 f6 6.Be2 e5 7.0-0 Nb6 8.Ne1 Bd7 9.Bh5 g6 10.Bg4 (better 10.Be2!?=) 10...Bb5-/+ 11.a4? (better 11.d3-/+) 11...Bf1–+ 12.Kf1 Qe7 13.Be2 Nh6 (13...Qe6 14.d4–+) 14.Qc1 (14.a5 Nd7–+) 14...Nd7 15.c4 Rc8 (better 15...c6!? 16.d4–+) 16.cd5 Bg7 (16...Nf5 17.a5–+) 17.Nf3 (better 17.Nc3-/+) 17...0-0?? (17...e4 18.Nd4 Qe5 19.Kg1 Qd5 20.Nc3-/+) 18.Nc3 (better 18.Ba3!? Qf7 19.Bf8 Qf8 20.Nc3=) 18...Nf5 (18...Qf7 19.Ba3 Rfe8 20.Rb1-/+) 19.Nb5 c6 (19...e4!? 20.Nfd4 Nd4 21.Bd4 f5-/+) 20.Na7 (20.dc6 bc6 21.Na7 Rc7=) 20...Rc7 (20...Ra8 21.dc6 Ra7 22.Qc4 Rf7 23.cd7 Qd7 24.a5=) 21.a5 (21.dc6!? bc6 22.Nb5=) 21...Nb8 22.a6?? (better 22.Ba3 Nd6 23.Qc5=+) 22...cd5–+ (22...Na6?! 23.dc6 Ra8 24.Bc4 Kh8 25.cb7 Ra7 26.Ra6 Rcb7 27.Ra7 Ra7 28.e4=+) 23.ab7 (23.Qb1 ba6 24.Ba3–+) 23...Rb7 (better 23...Rc1 24.Rc1 Qb7–+) 24.Ba3 Rc7?? (better 24...Qd7 25.Bf8 Bf8–+ (25...Kf8?! 26.d4=; 25...Ra7?! 26.Ra7 Qa7 27.Ba3+=)) 25.Be7+= Rc1 26.Rc1 Ne7 27.d4 e4 28.Nd2 Nd7?? (28...f5 29.Rc7 Kf7 30.Nb3+=) 29.Nb5 (better 29.Rc7 Rb8 30.Rd7+-) 29...Nf5 (29...Rc8 30.Rc8 Nc8 31.Nc7+-) 30.Nc7 (30.g4 Nh6+-) 30...Nb6 31.Nb3 (31.Bg4+-) 31...Nd6 (31...Rc8 32.Ba6 Rb8 33.Na5+-) 32.Nc5 (32.Rc6 Ndc8+-) 32...Rc8+- 33.N7e6 (33.N5e6 Ndc4 34.Bc4 dc4+-) 33...Bh6 34.Rc2 (34.Ba6 Ra8+-) 34...Nbc4 35.Nd7?? (35.Ra2 f5+=) 35...Kf7 (better 35...Ne3 36.fe3 Rc2 37.Nf6 Kf7–+) 36.Nec5 Ke7 (better 36...f5=) 37.Bg4 (better 37.Ra2!? Rc6 38.Ra7+=) 37...f5 38.Be2 Rc7 39.Nb8 Rb7?? (better 39...Be3 40.Nba6 Rc8 41.Bc4 Nc4 42.Rc4 dc4 43.fe3 Rc6=) 40.Nba6 (better 40.Nb7 Nb7 41.Bc4 dc4 42.Rc4+-) 40...Rb1–+ 41.Bd1 Rd1 42.Ke2 Rb1 (42...Rg1 43.Nc7 Rg2 44.Nd5 Kf7 45.h4–+) 43.Nc7 Rb2 (better 43...Nb6 44.Ra2 Bf8–+) 44.Rb2 Nb2 45.Nd5 Kd8 (45...Kf7 46.h3–+) 46.Ne6 (46.Nf6 Bg5 47.Nh7 Be7-/+) 46...Kc8 (46...Ke8 47.Nc5–+) 47.Nb6 (47.Nf6 Na4-/+) 47...Kb7–+ 48.Na4?? (48.Nd7 Nb5–+) 48...Nbc4 (better 48...Na4 49.Kd2 Kc6–+) 49.Nec5 (49.Nac5 Kc6–+) 49...Kc6 50.Nc3 Bf8 51.Ne6 Be7 52.d5 Kd7 53.Ng5?? (53.f3–+) 53...Bg5 54.g3 h5 55.h4 Bh6 56.Na4 (56.Kf1 Nb6–+) 56...Kc7 57.Nc5 Kb6 (57...Nb5 58.Na6 Kd6 59.Nb4–+) 58.Nd7 (58.Nd7 Kb5 59.Nf6–+). Akrapovik (1630) – Capitan_Haddock (1645), lichess.org, 2020.

5.Nf3 f6 6.Be2 e5 7.0-0 Be7 8.c4 e4 (8...dc4 9.Bc4 Nb6 10.Be2+=) 9.Nd4+- Nc5 10.cd5 (10.Nc3 dc4 11.Bc4 Nd3 12.Bg8 Rg8 13.Qh5 Kf8+-) 10...Nh6 (10...Qd5 11.Nc3 Qe5 12.f4 ef3 13.Nf3+-) 11.Bc4 (better 11.Nc3+-) 11...0-0?? (better 11...Nf7+-) 12.d6+- Kh8 13.de7 Qe7 14.a4 Ne6 (14...Ng4 15.Qc2+-) 15.Ba3 (better 15.Be6 Be6 16.Ba3 Qd7 17.Bf8 Rf8+-) 15...c5 (15...Nc5 16.Nb3 b6 17.Bd5+-) 16.bc6 Nc5 17.cb7 Bb7 18.Nc3 (18.Ne6 Rac8+-) 18...Rfc8 (18...Qe5 19.f4 ef3 20.Nf3+-) 19.Nd5 (better 19.Nb3!? Qe5 20.Nc5 Rc5 21.Bc5 Qc5+-) 19...Bd5 (19...Qe8 20.a5+-) 20.Bd5 Rab8 21.Ne6! Qd6 (21...Ne6 22.Be7 Pinning (22.Be7 Deflection)) 22.Qh5 f5 23.Qg5 (23.Bc4 Qe5 24.d4 ed3 25.Bc5 Rc5 26.Nc5 Qc5 27.Bd3 Rf8+-) 23...Rg8 (23...Ne6 24.Bd6 Ng5 25.Bb8 Rb8+-) 24.Bc4 (24.Nf4 Rbc8 25.Bg8 Kg8+-) 24...Ng4 (24...Ne6 25.Qh6 (worse 25.Bd6 Ng5 26.Bb8 Rb8+-) 25...Qa3 A) 26.Be6?! Qd6 (26...gh6?? 27.Ra3 Rgf8 28.d4+-) 27.Qg5 Qe6+=; B) 26.Ra3 gh6 27.Be6+-) 25.Bc5 (better 25.Qh5 Rgc8 26.Nc5 Rc5 27.d4 ed3 28.Bd3 Qd3 29.Bc5+-) 25…Qh2 0–1. GuestGQDJ – drtxyz, freechess.org, 2017.

5.Nf3 Ngf6 6.Be2 e6 7.0-0 Be7 8.d4 0-0 9.a4 b6 10.a5 Bb7 11.a6 Bc8 12.c4 dc4 13.Bc4 Nd5 14.e4 N5f6 15.Nc3 Re8 16.e5 Ng4 17.Qc2 Nf8? (Better is 17...Nh6+-) 18.Qe4 Ne5 19.Ne5 (19.Qa8?! Nc4 20.Rfb1 Bb4+-) 19...Bd7 20.d5 Bf6 21.Nd7 Nd7 (21...Qd7 22.Rfd1 ed5 23.Qd5 Qd5 24.Bd5+- (24.Nd5?! Bb2 25.Nc7 Ba1 26.Na8 Be5=; < 24.Rd5 Rac8+-)) 22.de6 Nc5 (22...fe6 23.Be6 Kh8+-) 23.ef7 Kh8 24.fe8Q Qe8 25.Qe8 Re8 26.Rfe1 Rd8 27.Rad1 Rd1 (27...Rc8 28.Bd5+-) 28.Nd1 (28…h6 29.Bf6 gf6 30.Re7+-) 1–0. Bonetti,Shane – BobA (1665), ICC, 2002.

5.a4 f6 6.Nf3 Bd6 7.c4 Ne7 8.cd5 Nd5 9.Nc3 Ne7 (9...Nc3 10.Bc3 Be6 11.d4=) 10.Bc4 Nd7 11.0-0 Nb6 12.Bb3 Ng6 13.d4 ed4 14.Nd4 Qe7? (14...Ne5 15.Qh5 g6 16.Qe2+-) 15.Qf3 (15.a5 Nd7 16.Nd5 Qe5+-) 15...Bd7? (better 15...Ne5!? 16.Qh5 g6+-) 16.Qb7 (16.a5 Ne5 17.Qb7 Bc8+-) 16...Ne5? (better 16...Bc8 17.Qf3 Ne5 18.Qh5 g6+-) 17.a5 Rd8 (17...Bc8 18.Qe4 f5 19.Nf5 Bf5 20.Qf5 Nc8+-) 18.ab6 ab6 19.f4 (better 19.Nd5!? Bc8 20.Qa7 Qf7+-) 19...Nd3 20.Rfb1 (better 20.Nd5 Nc5 21.Ne7 Nb7 22.Nec6+-) 20...Qe3 21.Kh1 Qd4 (21...Nf2 22.Kg1 Nd1 23.Kh1 Qe1) 22.Nd5?? (better 22.Ne4 Nb2 23.Nd6 Qd6 24.Rb2 Bb5 25.Rc1=+) 22...Nc5 (22...Nf2 23.Kg1 Nh3 24.Kh1 Qg1 25.Rg1 Nf2) 23.Nc7+- (23.Bd4?! Nb7 24.Nf6 gf6 25.Re1 Kf8 26.Bf6 Bb5 27.Bh8 Nc5+-) 23...Bc7 24.Qc7 (24.Bd4 Nb7 25.Rc1 Bf4 26.Re1 Kf8 27.Bb6 Re8 28.Re8 Be8-/+) 24...Qb4 25.Bf6!! gf6 26.Bf7!! Discovered attack 26...Kf7 27.Rb4 Rhe8 28.g3 (28.Qb6 Ra8 29.Rf1 Rac8+-) 28...Ne6 (28...Rc8 29.Qb6 Bf5 30.Rc4+-) 29.Qb6 Re7 (29...Nf8 30.Rd4 Rc8 31.Qb7+-) 30.Ra7 (better 30.f5 Rde8 31.fe6 Be6+-) 30...Rde8 31.Qc7 (better 31.Qd6 Nf8 32.Qd5 Be6 33.Qh5 Kg7 34.Qe8 Ra7+-) 31...Bb5 32.Qe7 (32.Rb5 Rc7) 32...Re7 33.Re7 Ke7 34.Rb5 Nc7 (34...Kf7 35.f5 Nd4 36.Rb7 Kg8 37.g4+-) 35.Rb7 Kd6 36.Rc7 (better 36.Rb8 f5+-) 36...Kc7 37.Kg2 Kd7 38.Kf3 Ke6 (38...f5+-) 39.Kg4 Kf7 40.Kh5 Kg7 41.h4 f5 (41...h6 42.Kg4 Kf7+-) 42.g4 (better 42.Kg5+-) 42...fg4?? (better 42...Kf6 43.gf5 Kf5=) 43.Kg4+- Kg6 (43...Kg6 44.f5 Kf6+-). RichardSommer (2075) – Mindmaster64 (2000), lichess.org, 2020.

5.c4 dc4 6.Bc4 Bd6 7.a4 (7.f4 Qh4 8.g3 Qe7=) 7...Nf6= 8.Nf3 0-0 (8...Qe7 9.d3=) 9.0-0 (9.Be5 a6+-) 9...Be6 (better 9...e4!? 10.Ne5 a6=) 10.Be6+- fe6 11.Be5 Be5 12.Ne5 Qd5 (12...Nbd7 13.Nd7 Qd7 14.d4+-) 13.d4 c6 14.Nc3 Qd6 15.Rc1 Nbd7 16.Nd7 Nd7 17.bc6 bc6 18.Ne4 Qd5 19.Nc5 Nc5 20.Rc5 (20.dc5?! Rad8+-) 20...Qd6 21.Qg4 Rf6 22.Rfc1 Rc8 23.Qe4 Rff8 24.f4 Rf7?! (24...Kh8+-) 25.Rc6 Rc6 26.Rc6 (worse 26.Qc6 Qc6 27.Rc6 Re7+-) 26...Qd8 (26...Qd7 27.Qe6 Qe6 28.Re6 Rd7+-) 27.Qe6 Qf8 28.Rc8 (28.Rc8 Qc8 29.Qc8 Rf8 30.Qc4 Kh8 31.d5+-) 1–0. BeepBeepImAJeep (2465) – Cliff_Burton (1920), lichess.org, 2017.

5.c4 dc4 6.Bc4 Nd7 7.d4 =.

5.c4 d4 6.Qb3 (6.ed4 ed4 7.Qe2 Be7=) 6...Be6 (6...c5!?=) 7.Nf3 de3 8.fe3 (8.Qe3!? Nd7 9.Ne5+=) 8...e4 9.Nd4 Bg4 10.Nc3 Nf6 11.h3 Bd7 12.g4 Bc5 (12...h5 13.g5 Nh7 14.h4+/- (worse is 14.Ne4 Ng5 15.Qd3 Ne6+=)) 13.Bg2+/- Qe7 14.g5 Nh5 (14...Bd4!? 15.ed4 Nh5+/-) 15.Ne4+- (15.Be4?! Bc8 16.Rg1 Bd4 17.ed4 Nf4+/-) 15...0-0?? (better is 15...Bd4 16.Bd4 Bf5+-) 16.0-0 (better is 16.Nc5 Bc8 17.Ne4 Rd8+-) 16...c6? (16...Bh3 17.Nf5 (17.Bh3?! Qe4 18.Nf5 Nf4+/-) 17...Bf5 18.Rf5+-) 17.a4?? (17.Nc5 Qc5 18.bc6 Nc6 19.Qb7 Rab8 20.Qd7 Ne5+-) 17...b6? (17...Bh3 18.Nf5 (18.Bh3 Qe4 19.Nf5 Nf4+/-) 18...Bf5 19.Rf5+/-) 18.Rf2?? (better is 18.Qd1 g6 19.Qf3 a6+-) 18...Bd6?? (18...Bh3 19.Bf3 f5 20.gf6 Nf6 21.Nc6 Nc6 22.Nf6 gf6 23.Bc6 Rad8+-) 19.Nf5 Bf5 20.Nd6 Bd7? 21.Ba3+- Qe5 22.Raf1 Ng3 23.Nf7 Rf7 24.Rf7 Be6 25.Rf8 1–0. TuGGy – ManRook, playchess.de, 2005.

5.c4 Nf6 6.Be5+= Be7 (6...Be6 7.cd5 Nd5 8.Nf3+=) 7.Nf3 (7.cd5 Nbd7 8.Bd4 Nb6+/-) 7...0-0 8.Nc3 c6 (8...Nbd7 9.Bd4+/-) 9.Be2 (9.cd5 cd5 10.Be2 a6+/-) 9...Re8 (9...dc4 10.Bc4 a6 11.a4+=) 10.0-0 Nbd7 11.bc6 bc6 12.cd5 Ne5 13.Ne5 cd5 14.d4 (14.Bb5!? Rf8 15.d4+/-) 14...Bd6 15.Bb5 (15.Nf3 Bf5+=) 15...Re6 (15...Be5 16.Be8 (16.de5?! Re5 17.Qd4 Qd6+=) 16...Bb8 17.Bb5=+) 16.a4 Be5 17.de5 Re5 18.Bc6 The pressure on the isolated pawn grows (18.Qd4 Qd6+=) 18...Rb8 19.a5 (19.Rc1 a6=) 19...Bb7 (19...Ba6 20.Re1 Rb2+=) 20.Bb7 Rb7 21.a6 Rbe7 22.Qb3 Ng4 23.h3 Nh6 24.Rfd1+/- Rd7 25.Rd4 Nf5+= 26.Rf4 d4= 27.ed4 Nd4 28.Qb2 h6 29.Ne4 Re6 30.Nc5 Ne2-/+ 31.Kf1?? Nf4 32.Nd7–+ Kh7 33.Rd1 Qg5 34.Qb7 Re8 35.Qf3 ½–½. gtate (1720) – jde (1760), net–chess.com, 2002.

5.Be5 Qe7 6.Bc3 Nf6 7.a4 g6 (7...Qe6 8.Nf3+=) 8.Nf3+/- Bg7 9.d4 0-0 10.Bd3 c6 11.0-0 c5 (11...Ne4!?+/-) 12.dc5+- Qc5 13.Bd4 Qd6 14.c4 (14.Nc3 Nbd7+-) 14...Re8 (14...dc4 15.Bc4 Be6 16.Nbd2+/-) 15.Nbd2 dc4 16.Nc4 Qd5 17.Qc2 Bg4 18.Be2 (18.Nce5 Be6+-) 18...Nbd7 19.Qb3 (19.Rfd1 Qe6+-) 19...Rac8 20.Ncd2 (20.Rac1 Nc5 21.Qb4 Nfe4 22.Bg7 Kg7+-) 20...Qh5 (20...Qb3 21.Nb3 Ne4 22.Rfc1+/- (22.Ba7?! Ba1 23.Ra1 Nc3=)) 21.h3 Bf3 (21...Be6 22.Qb2+/-) 22.Nf3 (22.Bf3 Nc5 23.Qb4+-) 22...Ne4? (22...Qd5 23.Qb2+-) 23.Rfd1 (better 23.Ne5! Qf5 24.Bg4+-) 23...Bd4 24.Rd4 (24.Nd4?! Qh4 25.g3 Ng3=; 24.ed4?! Rc3 25.Qa2 Re7+/-) 24...Ndc5 25.Qb1 (25.Qb4 a5 26.ba6 ba6+/-) 25...f5? (better 25...Nc3!? 26.Qb2 Nb3+/-) 26.Qa2 Kg7 27.Rad1 (better 27.Qb2 Kf8 28.Rc1+-) 27...Qg5?? (27...Nc3 28.Qb2 N5e4 29.Rd7 Kh6 30.Rb7+-) 28.Qb2 (better 28.Ng5 Ng5 29.Qa1+-) 28...Qf6 29.Rd7 (better 29.a5!?+-) 29...Nd7+= 30.Rd7 Kh6 (30...Kf8 31.Qf6 Nf6 32.Rb7+=) 31.Qf6 Nf6 32.Rb7 Rc1 33.Kh2 Ne4 34.Nd4 (34.g4 fg4 35.hg4+-) 34...Nf2= 35.Bf3 (35.Ra7 Re3 36.g4 Nh3 37.Ra6-/+) 35...Rh1 (better 35...Re3!? 36.Kg3 Ne4 37.Kf4 Rd3-/+) 36.Kg3+= Ne4 (36...Nd3 37.Ra7 Re3 38.Rd7=) 37.Be4 (37.Kf4+/-) 37...fe4? (37...Re4 38.Ra7 Re3 39.Kf2=) 38.Kf2?? (better 38.Ra7 Rd1 39.Rc7+-) 38...Rf8= 39.Ke2 (39.Kg3 Re1 40.Kg4 A) worse 40...Re3 41.Ne6 (41.Ra7?! Rc3 42.Ne6 Rf2=) 41...Rf2 42.Ng5 (worse 42.Ra7 Rg2 43.Kf4 Re1-/+) 42...Rg2 43.Kf4 Rg5 44.Ke3+/-; B) 40...Rf2 41.Ra7 Re3+=) 39...Rc1 (39...Rh2 40.Kd2 Rg2 41.Kc3-/+) 40.Kd2 Rb1 (40...Rc4 41.Ra7 Rf2 42.Ne2 Rg2 43.h4=+) 41.Kc2 (41.Ra7 Rf2 42.Kc3 Rg2+/-) 41...Rff1 42.Kc3 Rfc1 43.Nc2 Rg1 (better 43...Ra1 44.Kd2 Rd1 45.Ke2 Rab1=) 44.Rc7?? (better 44.Ra7 Rg2 45.Rc7=) 44...Rg2-+ 45.Kd4 (45.Rc4 Rh2-+) 45…Rc1 0-1. ClayPigeons (2155) - Jakesin (2080), Rated Bullet game, lichess.org, 2021.

5.Be5 Ne7 +=.

5.Be5 Nf6 6.Bb2 c6 7.a4 Bd7 8.c4 dc4 9.Bc4 a6 (9...Bd6 10.Nf3+/-) 10.Nc3 (10.Qb3!? Nd5 11.bc6 bc6 12.Nf3+-) 10...ab5 11.ab5 Ra1 12.Qa1 Bc5 13.Nf3 0-0 14.0-0 Qb6? (14...Be6 15.d3+/-) 15.bc6 (better 15.Na4 Qa7 16.Bf6 cb5 17.Nc5 Qc5 18.Bg7 bc4 19.Bf8 Qf8 20.Ne5+-) 15...Bc6+/- 16.d4 (16.Ne5 Bd6 17.Nc6 Qc6+-) 16...Bb4 (16...Bf3 17.gf3 (17.dc5?! Qc5 18.Be2 Bc6=) 17...Bb4 18.Rc1+/-) 17.Rc1 (17.d5 Bc3 18.Bc3 Bd5+-) 17...Bf3+/- 18.gf3 Qc6? (18...Rd8 19.Qa4 Bc3 20.Bc3+/-) 19.Be2?? (better 19.Na2 Bd6 20.Bf7 Kf7 21.Rc6 Nc6 22.Qb1+-) 19...Qd6 20.Ne4 (better 20.Qb1!?+/-) 20...Ne4= 21.fe4 Qg6 22.Kf1 Qe4 23.Kg1 Nc6 24.d5 Ne5?? (better 24...Qg6 25.Kf1 Qe4+=) 25.Be5+- f6 (25...Qg6 26.Bg3 Bd6 27.Qb1+-) 26.Bg3 h5 (26...Bd2 27.Qb1 f5 28.Qe4 fe4 29.Rc7+-) 27.Qd4 White intends d6 (better 27.Qb1 Qb1 28.Rb1+-) 27...Qe7 (27...Qd4 28.ed4 h4 29.Bh4 Re8+-) 28.d6 Qd7 29.Qb4 h4 (29...Kh8 30.Rc7 Qe6 31.Bc4+-) 30.Qh4 Rc8 (30...b5+-) 31.Rc8 Qc8 32.Qc4 (32.Bc4 Qc4 33.Qc4 Kh7 34.d7 Kg6 35.Qe4 f5 36.Qe8 Kh6 37.d8Q g5 38.Qd6 Kg7 39.Qdg6) 32...Qc4+- 33.Bc4 (33.Bc4 Kf8 34.Bb5 g5 35.d7 Ke7 36.Bc7 Kf8 37.d8Q Kg7 38.Qe7 Kg6 39.Be8 Kf5 40.Qh7 Kg4 41.Bh5 Kh4 42.Bf3) 1-0. dannysmet (2050) - yasserking (2010), Rated Blitz game, lichess.org, 2020.

5.a4 b6 6.c4 a6 7.Qf3=.

5.a4 b6 6.c4 Bb7 7.Nf3 (7.cd5 ed5 8.Nf3 c5=) 7...f6 (7...Nf6!?=) 8.Be2 c6 9.d4 Bd6 10.Nbd2 Ne7 11.0-0 Ng6 (11...a6 12.Qc2 Nd7 13.Bd3+=) 12.Nb3 h6 (12...dc4 13.Bc4 Qd7 14.Nbd2+=) 13.Qc2 White prepares the advance c5 13...f5 14.c5 bc5 (14...Bc7!?+-) 15.dc5+- Bf8 16.Ne5 (16.Rfd1 Qe7+-) 16...Ne5 17.Be5 Rg8 18.Qc3 Nd7 19.Na5 Nc5 20.Nb7 Nb7 21.bc6 Nd6? (21...Nc5 22.c7 Qc8+-) 22.c7 Qc8 23.Qc6 Kf7 24.Bd6 Bd6 25.Qd6 a5 26.Bb5 Kf6 (26...Qf8 27.Qd7 Qe7 28.Rac1+-) 27.Bd7 Qf8 (27...Ra6 28.Bc8 Rd6 29.Bb7+-) 28.Qc6 (better 28.Qe6 Kg5 29.h4 Kh5 30.g4 Kh4+-) 28...Qe7 29.c8Q Rac8 30.Bc8 Rc8 (30...Re8 31.Rfc1+-) 31.Qc8 g5 32.Rac1 h5 33.Rc7 Qd6 34.Qh8 (34.Qh8 Kg6 35.Qg7) 1–0. madik – khip, gameknot.com, 2009.

5.a4 b6 6.c4 Bc5?? 7.Bg7+- f6 (7...a6 8.Bh8 Nf6 9.Nc3+-) 8.Bh8 Kf7 (8...h6 9.Qg4 Ke7 10.Nc3+-) 9.Qh5 Ke7 10.Qh7 Kd6 11.d4 (11.Nc3 Bb7+-) 11...Bb4 12.Nd2 Qf8 (12...a6 13.Ngf3 ab5 14.cb5+-) 13.Rb1 (13.c5 bc5 14.dc5 Bc5 15.Ne4 de4 16.Rd1 Bd4 17.Rd4 Kc5 18.Qc7 Nc6 19.Qc6) 13...Bd2+- 14.Kd2 Nd7 15.cd5 ed5 16.Rc1 Bb7 17.Nf3 (17.Qg6 Ke6 18.Rc7 Ne7+-) 17...Re8 (17...Rc8 18.Qg6+-) 18.Qh3 (better 18.Qg6!? Rc8+-) 18...Nh6 19.Qg3 Ke7 (19...Ke6 20.Rc7 Qb4 21.Ke2 Rh8+-) 20.Bg7 Qf7 21.Bh6 Rg8 22.Qc7 Bc8 23.Bf4 Qe8 24.Bd6 (better 24.Nh4 Ke6+-) 24...Kf7 25.Qa7 Kg6 26.Bd3 f5 27.Nh4 (27.g4 Kg7 28.Bf5 Rf8+-) 27...Kg5 28.Nf5 Qf7 29.h4 Kg4 30.f3 (30.Nh6 Kh5 31.Nf7 Rg2 32.Rc8 Rf2 33.Ke1 Re2 34.Be2 Kg6 35.Bd3 Kh5 36.Rg8 Nc5 37.Rg5) 30...Kh5 31.g4 Kg6 1–0. GuestMKCQ – GuestVTWD, freechess.org, 2017.

5.a4 b6 6.Nf3 a6=.

5.a4 c6 6.c4 cb5 7.ab5 Bd7 (7...Nf6 8.Nf3=) 8.Nf3 a6 9.Nc3 ab5?? (better 9...dc4 10.Bc4 Nf6+=) 10.Ra8+- Qc7 (10...bc4 11.Nd5! ed5+-) 11.cd5 ed5 (11...Qd8 12.de6 fe6 13.Nb5+-) 12.Nd5 Qc8 13.Qb3 Ne7 14.Bb5 Nd5 15.Qd5 Bb5 16.Qb5 Ke7 17.Ba3 (better 17.Qe5 Kd7 18.Rb8 Bd6 19.Qf5 Kc7 20.Rc8 Rc8 21.Qf7 Kb8 22.Qg7 Rc7 23.Qg8 Rc8 24.Qh7 Rc6+-) 17...Kd8 18.Qd5 Ke8 19.Qe5 (better 19.Ne5 Ba3 20.Rb8 Ke7 21.Rc8 Rc8 22.Qb7 Ke6 23.Qc8 Ke5 24.f4 Kf6 25.Qa6 Ke7 26.Qa3 Ke8 27.Qa8 Ke7 28.Qb7 Kd6 29.Qf7 h5+-) 19...Kd7 20.Rb8 Ba3 21.Rc8 Rc8 22.0-0 (better 22.Qf5 Kd8 23.Qd3 Ke8 24.Qa3 f6+-) 22...Re8 23.Qg7 (better 23.Qd5 Kc7+-) 23...Re6 24.Qf7 Kd6 25.d4 (25.Qb7 Re7 26.Qa6 Kd7 27.Qa3 h6 28.Qd3 Kc7 29.Rc1 Kb8 30.Qd6 Ka7 31.Ra1 Kb7 32.Rb1 Kc8 33.Rb8) 25...Kd5 26.e4 (26.e4 Kd6 27.Rb1 b5 28.Rb5 Re7 29.Qd5 Kc7 30.Rb7 Kc8 31.Qc6 Kd8 32.Rb8) 1–0. GuestTKGK – GuestDYXL, freechess.org, 2017.

5.a4 Nf6 6.c4 c6 7.Nf3 Bd6 8.Be2 0-0 9.Qc2 dc4 10.Bc4 cb5 11.ab5 Bd7 12.d3 Qb6 Exerts pressure on the isolated pawn (12...Qe7 13.0-0=) 13.Nc3 (13.Bd4 Bc5+=) 13...Bb4 (13...Rc8 14.0-0+=) 14.Qb3 Bc3 (14...a5!? 15.0-0 Rc8+=) 15.Bc3+- Be8? (15...a6 16.Qb2 Qd8 17.0-0+-) 16.Bf6 (better 16.Ba5 Qc5 17.Bb4+-) 16...gf6+- 17.0-0 Nd7 18.d4 f5 19.Be2 Nf6 20.Ne5 Nd5 (20...a6 21.Qa3 Bb5 22.Bb5 Qb5 23.Rfb1+-) 21.Rfc1 f6 22.Nf3 Bf7 23.Rc2 Rfc8 24.Rac1 Rc2 25.Rc2 a6 26.Ra2 (26.Qa3 Bh5+-) 26...Be8 (26...Rc8 27.Bc4+=) 27.h3 (27.Bc4 Nc7+=) 27...Kf7? (better 27...Rc8!?=) 28.Bc4 Nc7 29.d5 ed5 30.Bd5 Kg7 31.Nd4 Nb5 (31...Bd7 32.ba6 Ra6 33.Qb6 Rb6 34.Bf3+-) 32.Nf5 (32.Ne6 Kh6 33.Qb4+-) 32...Kg6?? (better 32...Kh8+-) 33.Be4 Bc6 34.Ne7 (34.Nd6! Be4 35.Qf7 Kg5 36.f4 Kh6 37.Qf6 Bg6 38.Nf5 Kh5 39.Qg5) 34…Kg7+- (34...Kg7 35.Ra4 h5 36.Nf5 Kg6 37.Nd6 Be4 38.Qf7 Kh6 39.Qf6 Kh7 40.Qf7 Kh6 41.Qe6 Kg7 42.Nf5 Bf5 43.Qb6 Bd7 44.Qb7 Ra7+-). GuestJCSP – GuestSKLD, freechess.org, 2017.

5.c4 dc4 6.a4 a6 7.Bc4 ab5 8.ab5 c6 9.Ra8 cb5 10.Bb5 Nd7 (10...Nc6 11.Nf3 Nge7 12.0-0+-) 11.Bd7 (11.Qc2!? Ne7 12.Be5 Nc6 13.Bc6 Ke7 14.Bd7 Kd7+-) 11...Kd7 (11...Qd7 12.Qc2 Ne7 13.Ba3+-) 12.Nf3 (better 12.Qa4 Ke7 13.Ba3 Kf6 14.Nf3+-) 12...Nf6 (12...Qc7 13.Qa4 Kd8 14.Ng5+-) 13.0-0 (better 13.Qa4 Kd6 14.Ne5+-) 13...Bd6 14.Bf6 Qf6 (14...gf6 15.Qa4 Ke7 16.Rc1+-) 15.Qa4 Ke7 16.Nc3 (better 16.Qc2 Qf5 17.Rc8 Qc2 18.Rc2 b5+-) 16...Bc7 (16...Bd7 17.Qa7 Ra8 18.Qa8 Bc6+-) 17.Qc4 Bd6 18.Rc8 Rc8 19.Qc8 Qh6 20.Qb7 Kf6 21.Ne4 Kf5 22.Nd6 (22.Nd6 Kg4 23.Qe4 Qf4 24.Qf4 Kh5 25.Qg5) 1–0. BeepBeepImAJeep (2670) – Norb68 (1715), lichess.org, 2016.

5.c4 c6 6.a4 Nf6 7.Nf3 Bd6 8.Be2 0-0 9.0-0 e5 (9...a6 10.Ne5=) 10.d4 (better is 10.Be5!? dc4 11.Bc4+/-) 10...e4= 11.Nfd2 Nbd7 12.Nc3 Bb4 13.Qb3 Ba5 14.bc6 bc6 15.Qc2 Ba6 16.cd5 Be2 17.Ne2 cd5 18.Nb3 Rc8 19.Qd1 Bc7 20.Ba3 Re8 21.Ng3 Nb6 22.Bc5 a6 23.Nf5? (23.Bb6 Bb6 24.Qe2 a5=) 23...Rb8 (23...Nc4 24.Nd2-/+) 24.Na5 Qd7 25.Ne7? (25.Ng3-/+) 25...Kh8?? (better is 25...Re7 26.Be7 Qe7–+) 26.Nac6 Ra8 27.Rb1 Nc8 28.Nc8 Qc8 29.Na7? Qe6 30.Rb7-/+ Bd8 31.Qb3 h6 32.Rb1 a5 33.Nb5 Nd7 34.Nc7 Bc7= 35.Rc7 Reb8 36.Rb7 Rb7-/+ 37.Qb7 Rb8 38.Qb8 Nb8 39.Rb8 Kh7 40.Rb5 Qg4–+ 41.Rb1 Qd7 42.Rb5+= Qc7 43.h3 f5 44.g3 h5 45.Kg2 g6 46.Bb6= Qc6 47.Ba5 Qa8 48.h4 Kh6 49.Rc5 Kg7 50.Rc7 Kh6 51.Rc5 g5 52.hg5 Kg5 53.Rb5 h4 54.gh4 Kh4 55.Bc7 Qg8 56.Bg3 Kg4 57.a5 Qa8 58.Rc5 Qb7 59.Rc7 Qa8 60.Rc5 Qb7 61.Rc7 Qb5 62.Rc5 Qe2 63.Rd5 Qa2 64.Rc5+/- Qe2 65.Re5 Qf3 66.Kh2 Qe2 67.Kg2 Qa6 68.Rc5 Qh6 69.Kf1 Qa6 70.Kg2 Qh6 71.Kf1 Qh3 72.Ke2 Qh5 73.Kd2 Qf7 74.Kc3+- Qa2 75.Kb4 Qb2 76.Kc4 Qa2 77.Kb5 Qb2 78.Kc6 Qb3 79.Kc7 Qf7 80.Kc6 Qe6?? 81.Kb7+- Qd7 82.Bc7 Qa4 83.a6 Qb3 84.Bb6 Qf7 85.Rc7 Qd5 86.Rc6 Qd7 87.Bc7 Qd5 88.a7 Qb3 89.Bb6 Qf7 90.Ka6 Qa2 91.Ba5 Qe2 92.Kb6 Qf2 93.a8Q Qe3 94.Qg8 Kf4 95.Qg7 Qb3 96.Kc7 Qa4 97.Bd2 Kf3 98.Rc3 Ke2 99.Qg2 1–0. mr5reasons1 (1630) – reniar (1640), gameknot.com, 2013.

5.Be2 Nf6 6.Nf3 a6 7.ba6 ba6 8.Ne5 Bd6 9.Na3 0-0 10.Rb1 c5 11.0-0 Qc7 12.f4 Nc6 (12...c4!?=+) 13.Nc6+= Qc6 14.Bf6 gf6 15.c4 d4?? (better 15...Bd7+=) 16.Bf3+- Qc7 17.Ba8 Bd7 18.Rb7 Qa5 1–0. anotherheaven (1680) – martunsan (1615), lichess.org, 2015.

5.Nf3 Bb4?? 6.Bg7+- f6 7.Bh8 Nh6 8.Bg7 (better is 8.Nd4 Kf7 9.Qh5 Kg8 10.Qh6 Kh8+-) 8...Nf5 9.Bh8 Kf7 10.Bd3 (better is 10.Nh4! Bd6 11.Qh5 Kg8+-) 10...Qh8 11.Bf5 ef5 12.Nd4 Nd7 (12...Qg8 13.Qf3 Ke8 14.a3+-) 13.Nf5 Nc5 14.Qh5 Ke6 15.Nd4 Kd6 16.c3 Ba5 17.0-0 Nd7 (17...Qg8 18.Qh4 Qg6 19.c4+-) 18.Na3 b6 (18...Nc5 19.c4 Qg8 20.cd5+-) 19.c4 (better is 19.e4 de4 20.Nc4 Ke7 21.Qd5+-) 19...Bd2 (19...Ne5 20.cd5 Bg4 21.Qh4+-) 20.cd5 (20.Qd5!? Ke7 21.Qa8 Ne5+-) 20...Bc3 (20...Ne5 21.Qe2 Bb4 22.Nc4 Kd7 23.Rac1+-) 21.Nc4 (21.Nf5 Kc5 22.Rfc1 Ne5 23.Rc3 Kd5 24.Rd1 Ke6 25.Rc7 Qf8 26.Nc4 Bd7 27.Rdd7 Nf3 28.Qf3 a6 29.Nd4) 21...Ke7 22.Nf5 (22.d6 cd6 23.Nc6 Kf8 24.Nd6 Qg8+-) 22...Kd8 23.Qf7 (better is 23.Rac1!? Bb4+-) 23...Ba1 (23...Qf8 24.Qf8 Nf8+-) 24.Qe7 1–0. Fournier,Frederic (1835) – puretrexa, Active, 2005.

5.Nf3 b6 6.Be2 Nf6 7.0-0 g6 (7...Bd6 8.c4=) 8.c4 (8.Nc3 a6+=) 8...Bg7 (8...dc4 9.Ne5 Bb7 10.Bf3+=) 9.cd5+- Qd5 (9...ed5 10.Qc2+-) 10.Ba3 (10.Qc2!?+-) 10...Ne4+= 11.d4 Bd7 (11...Bb7!?+=) 12.Nfd2+- Nd6?? (12...Nd2 13.Qd2 Qf5+- (13...Bb5?? 14.Nc3 Qd7 15.Nb5+-)) 13.Bf3+- Qb5 14.Ba8 c6 (14...c5+-) 15.Bd6 1–0. DEFFM – Kpp, freechess.org, 2018.

5.Nf3 c6 6.bc6 Nc6 7.Bb5 Bd7 8.0-0 Bc5?? (better is 8...Nf6=) 9.Bg7+- Bd6 10.Bh8 f6 11.c4 Nh6 12.cd5 ed5 13.Nd4 Nd4 (13...Nf7 14.Bg7+-) 14.Bd7 (better is 14.Qh5!? Nf7 15.Bd7 Qd7 16.ed4 Be7+-) 14...Qd7 (14...Kd7 15.ed4 Qh8 16.Qb3+-) 15.Bf6 (better is 15.ed4 Ng4 16.h3 Kf7 17.hg4 Rh8+-) 15...Ndf5 16.Qh5 (16.Qh5 Qf7 17.Qf7 Kf7 18.Bb2+-) 1–0. Fournier,Frederic (1890) – eskakeo (1795), Active (5/0), 2005.

5.Nf3 Qd6 6.Ba3+= Qb6 7.Bf8 Kf8 8.c4 dc4 9.Bc4 Nd7 10.Nc3 Nc5 (10...Qc5 11.Qb3+/-) 11.d4 Nd7 12.0-0 Ndf6 13.Ne5 Ne7 14.Qf3 Rb8 (14...Ng6 15.Qg3+/-) 15.Bd3+- c6 (better is 15...Qa5 16.Ne4 Nf5+-) 16.Ne4 Nf5 17.bc6 bc6 (17...Ne4 18.Be4 bc6 19.Rfc1+- (19.Bc6?! f6 20.Qh5 Nd6 21.Ng6 Kg8 22.Ne7 Kf8 23.Nc8 Qc6 24.Na7 Qd7+-)) 18.Rac1 (better is 18.Nf6 gf6 19.Nc6+-) 18...Bb7 (18...Nd7 19.Nc6 Ra8+-) 19.Nf6 gf6 (19...Ke7 20.Nfd7 Qc7 21.Nb8 Rb8 22.Bf5 ef5 23.Qg3+-) 20.Nd7 (20.Nd7 Ke7 21.Nb6 ab6 22.Bf5 ef5 23.Qf5+-) 1–0. Heqexe – Stucer, internet, 2017.

5.Nf3 Qd7 6.c4 a6 7.cd5 Qd5 8.a4 c6 (8...Nf6 9.Nc3 Qd8 10.d4=) 9.Be2 Qb3?? (better is 9...Nf6+=) 10.Qb3+- (10.Qb3 Nf6 11.bc6 Nc6 12.d3+-) 1–0. eds – georgizk, Live Game Caissa's Web, 2004.

5.Nf3 Bd7 6.a4 c5 7.c4 Qa5 8.Be2 a6 (8...Nf6 9.0-0+-) 9.cd5+- ed5 10.Ne5 (10.0-0!? Nf6+-) 10...Nf6+- 11.0-0 Bf5 (11...Bd6 12.Qc2+-) 12.Nc3 (12.g4 Be6+-) 12...d4 (12...Bd6!? 13.d4 0-0+-) 13.ed4 cd4 14.Re1 dc3 15.Bc3 Qc7 16.Bh5 Be7 17.Bf7 Kf8 18.Qf3 Nbd7?? (better 18...Bc8+-) 19.Qf5+- Ne5 (19...ab5 20.ab5 Ra1 21.Ba1 (worse 21.Ra1 g6 22.Bg6 Ne5+-) 21...Ne5 22.Be5+-) 20.Be5 Qd8 (20...Qb6 21.Bc4 ab5 22.ab5+-) 21.Bc4 (21.Ba2 b6 22.Rac1 Qd7+-) 21...Qc8 (21...Rc8 22.Ba2 Qe8 23.ba6 ba6 24.Bf6 gf6 25.Re7 Qe7 26.Qc8 Qe8 27.Qa6+-) 22.Be6 Qd8 23.Bf4 (23.Ba2 Qc8 24.Qd3 Qd7 25.Qd7 Nd7 26.Bg7 Kg7 27.Re7 Kh6 28.Rd7 ab5 29.ab5 Rhd8 30.Rb7 Rd2 31.Rb6 Kg5+-) 23...Qe8 (23...Qd4 24.Rac1 ab5 25.Ba2+-) 24.Ba2 (24.Rac1 Qh5 25.ba6 ba6+-) 24...Qg6 (24...ab5 25.Rac1 Rd8 26.Qe6+-) 25.Qe6 (better 25.Qe5 Qe8 26.Rac1+-) 25...Qe8 (25...Re8+-) 26.Bd6 Bd6 (26...Ng8 27.Re3 g6 28.Rf3 Kg7 29.Be5 Nf6 30.Bf6 Kf8 31.Bh8 Bf6 32.Rf6 Qf7 33.Qf7) 27.Qd6 (27.Qd6 Qe7 28.Qe7) 1–0. guest8 – MIKSTICK, chessclub.com, 2019.

5.Nf3 Bd7 6.Ne5 Bc8 (6...Nf6 7.Be2=) 7.Bd3+= Nf6 8.0-0 Nbd7 9.f4 Ne5 10.fe5 Nd7 11.Qf3 Qe7 (11...f5 12.ef6 Nf6 13.Bf6 Qf6 14.Qh5 g6 15.Rf6 gh5 16.Nc3+=) 12.Be2 (12.Ba3 c5 (12...Ne5? 13.Qg3 c5 14.Qe5+-) 13.bc6 Ne5+-) 12...g6 (better is 12...c5!?+=) 13.Ba3 Ne5 (better is 13...Qg5 14.Qf7 Kd8 15.Bf8 Rf8 16.Qe6 Re8 17.Qd5 Qe5+-) 14.Qf4 Qd7 15.Qe5 f6 (15...Rg8 16.Bf8 Rf8 17.c4+-) 16.Qf6 (16.Rf6!? Bg7 17.Re6 Qe6 18.Qg7 Rg8 19.Qc7 d4+-) 16...Bg7 17.Qf4 (17.Qf3!? e5 18.Nc3 e4+-) 17...Ba1 (17...a6+-) 18.Qf8!! (18...Rf8 19.Rf8#) 1–0. abhijit (1830) – buddah (1930), net–chess.com, 2002.

5.Nf3 Ne7 6.c4 a6 7.Nc3 ab5 8.cb5 Nd7 9.Be2 Nb6 10.0-0 Nf5 11.a4 Nc4 (11...Bb4 12.Qb3 Ba5 13.Rfc1=) 12.Bc4+= dc4 13.Qe2 b6 (13...Qd3 14.e4 Nd6 15.e5+=) 14.Qc4+- Bb7 15.Ne4 (15.e4 Nd6 16.Qe2+-) 15...Be4 (better 15...Qd5!? 16.Qd5 ed5+-) 16.Qe4+- Bd6 (16...Qd5 17.Qc2 Qb7+-) 17.g4 Nh4? (17...Ne7 18.Bg7 Rg8 19.Qh7 Ra7+-) 18.Nh4 Qh4 (18...0-0 19.Nf3 Qe7+-) 19.Qa8 (19.Qa8 Ke7 20.Qg2+-) 1–0. Bonetti,Shane – aldam, ICC, 2002.

5.Nf3 Nf6 (--> 4.e3 Nf6 5.Nf3 e6).

5.f4 Ne7 6.Nf3 (6.Be2 a6=) 6...Ng6 (6...a6 7.Be2=) 7.Bd3+= Bd6 (7...a6 8.a4+=) 8.Bg6 (8.Bg7 Rg8 9.Bb2 Bc5+/-) 8...hg6+= 9.Bg7 Rh7 10.Be5 Be5 (10...a6 11.Bd6 Qd6 12.Nc3+=) 11.Ne5 (11.fe5 g5 12.g4 a6+=) 11...Nd7 (11...Qh4 12.g3 Qg3 13.hg3 Rh1 14.Ke2 Rd1 15.Kd1=) 12.d4 (12.Qf3!?+=) 12...Qh4= 13.g3 Qh3 (13...Qg3 14.hg3 Rh1 15.Ke2 Rd1 16.Kd1=) 14.Qe2 Ne5 15.de5 Bd7 16.Nc3 c6 17.bc6 Bc6 (18.Nb5 Kd7+/-; 17...bc6 18.0-0-0+/-). grower – zzz, Live Game Caissa's Web, 2005.

5.f4 Nf6 6.Nf3 =.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd7 9.Nc3 c6 10.Be2 c5 11.0-0 c4 (11...Nf6 12.Ne5=) 12.Nd4 (12.d3!?+-) 12...Qb6 (12...Nf6 13.Bb2=) 13.d3+= Bc5?? (better 13...cd3 14.Qd3 Nf6+=) 14.dc4 (14.Na4 Qa7 15.Nc5 Qc5 16.Ne6 fe6 17.Bg7 Bb5 18.Bh8 Ne7+-) 14...dc4? (14...Bd4 15.Na4 (15.ed4?! Nf6+-) 15...Qd6 16.Qd4+- (16.ed4?! Nf6+-)) 15.Bc4 (better 15.Na4!? Qa7 16.Nc5 Qc5 17.Ne6 Be6 18.Bg7 Ne7 19.Bh8 Qb5+-) 15...Ne7 (15...Qc7 16.Ne4 Bf8 17.Bd3+-) 16.Qe2 (16.Be6 fe6 17.Na4 Qd6 18.Qh5 Ng6 19.Nc5 e5 20.Nd7 Qd7+-) 16...0-0 17.Nf3 Bd6 18.Nh4 (18.Ne4!?+-) 18...Qc7+- 19.g3 (better 19.f4+-) 19...Nd5? (19...Rc8 20.Bd3+-) 20.Ne4 (better 20.Nd5 ed5 21.Bd5+-) 20...Nb6?? (20...Be7!?+-) 21.Bd3 (21.Nf6 Kh8 22.Qh5 h6 23.Qf7 Rf7 24.Ng6) 21...Be7+- 22.Nf3 (22.Qh5 f5 23.Ng5 Bg5 24.Qg5+-) 22...e5? (22...f6!?+-) 23.Neg5 (better 23.Be5 Qc8 24.Nd4+-) 23...f6?? (better 23...Bg4 24.Bh7 Kh8+-) 24.Ne4 (better 24.Bh7 Kh8 25.Nh4+-) 24...Bf5 (24...Bg4 25.Ned2+=) 25.Ned2 (25.Nf6 Rf6 26.Be5 Qc8 27.Bf6 Bf6 28.Bf5 Qf5+-) 25...Bd3 (25...Be6 26.Re1+=) 26.Qd3 (26.cd3 Bb4+-) 26...Rd8 27.Qe4 (27.Qb3 Kh8+=) 27...N8d7 28.Nh4 (28.Rd1 Nf8+=) 28...Nc5= 29.Qb4 Ne6 30.Qc3 (30.Qb3 Rd2 31.Qe6 Kf8=) 30...Qd7 (30...Qc3 31.Bc3 Rc8 32.Nf5=+) 31.Nf5 (31.Qb3 Kh8=) 31...Bf8 32.Ne4 (better 32.Qb3!?=) 32…Qb5=+ 0–1. alt20 (1640) – cefisidoro, lichess.org, 2016.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd7 (8...Nf6 9.Be2=) 9.Ne5 Nf6 10.Bd3 Bd6 11.Ng4 Ng4 (11...Be7!?=) 12.Qg4+- e5? (better 12...Bf8+-) 13.Qg7+- Rf8 14.Be5 Be5 15.Qe5 Be6 16.Bh7 Nd7 17.Qg7 Nf6 18.0-0 Qd6?? (18...Nh7 19.Qh7 Qf6+-) 19.Qf6 1–0. GuestYSMS – GuestPSST, freechess.org, 2018.

6.a4 Nf6 7.Be2 Bd6 8.0-0 0-0 9.Ne5 c5 10.f4 =.

6.ba6 Na6 7.Ne5 (7.Bb5 c6 8.Be2 Nf6 9.0-0 Bd6 10.Be5=) 7...Bd7 8.c4 Nf6 9.Nd7 Nd7 10.Nc3 =.

6.Nc3 Bd7 7.a4 (7.Bd3 ab5 8.Nb5 Nf6 9.Bf6 gf6 10.Nc3=) 7...a5 (7...Nf6 8.Bd3= c5 9.Ne5 c4 10.Be2=) 8.Bd3+= (8.Be2 Nf6 9.0-0 Bd6 10.Ba3+=) 8...b6 (8...Nf6 9.0-0+= Bc5 10.e4+=) 9.e4+/- c6 (9...Nf6 10.0-0+/-) 10.bc6 Bc6 11.ed5 Bd5 12.Nd5 Qd5 13.Bb5 Nd7 (13...Kd8!?+/-) 14.Ne5+- Ngf6 (14...Qe4 15.Kf1 Rd8 16.Nd7 Rd7 17.Bd7 Kd7 18.Qh5+-) 15.0-0 (better is 15.Bc6 Qc5 16.Qf3+-) 15...Bd6? (better is 15...Rc8+/-) 16.Bc6+- 0-0 (16...Be5 17.Bd5 Nd5 18.Be5 Ne5+-) 17.Bd5 (17.Bd7?! Be5 18.Be5 Qe5+= (worse is 18...Qd7 19.Bf6 gf6 20.Qg4 Kh8 21.Qf3+=)) 17...ed5 18.Nd7 Nd7 19.Bg7! Kg7 20.Qg4 Kh8 21.Qd7 Rad8 22.Qf5 f6 23.Rfe1 Be5 (23...Rf7+-) 24.Re5 fe5 25.Qe5 Kg8 26.Ra3 Rde8 (26...Rd6 27.Qd6 Rf5 28.Qe6 Kf8 29.Qf5 Ke7 30.Re3 Kd6 31.Qf6 Kc5 32.Rc3 Kb4 33.Qd4) 27.Rg3 Kf7 28.Rg7 1–0. marekt – AymanO, internet, 2008.

6.Nc3 Nf6 7.Be2 Bd6 8.ba6 Na6 9.Nb5 Be7 10.0-0 =.

6.Bd3 ab5 7.Bb5 Bd7 8.Be2 Nf6 9.0-0 Bc5 10.Be5 =.

6.Be2 ab5 7.Bb5 Bd7 8.Be2 Nf6 9.0-0 Be7 10.c4 =.

6.Ne5 ab5 7.Qh5 (7.Bb5 c6 8.Bd3 Nf6 9.0-0 Bd6 10.f4=) 7...Qe7 8.Bb5 Bd7 9.Nd7 Nd7 10.Nc3 =.

6.a3 Ngf6 7.c4 Be7 (7...Nb6 8.cd5 ed5 9.Be2 Bd6 10.Qc2 Bg4=; 7...Bd6 8.d4 a6 9.c5 Be7 10.Nc3 0-0=; 7...a6 8.ba6 ba6 9.Qa4 Bd6 10.cd5 ed5=) 8.cd5 ed5 9.Be2 0-0 10.Qc2 a6 =.

6.a4 Ngf6 7.Be2 Bd6 (7...Be7 8.0-0 0-0 9.d4 a6 10.Ba3 ab5=) 8.Ba3 Ba3 9.Na3 e5 10.0-0 e4 =.

6.Nc3 Ngf6 7.Bd3 e5 8.Bf5 Bd6 9.0-0 0-0 10.a4 Nb6 +=.

6.c4 dc4 7.Bc4 (7.Qc2 a6 8.ba6 b6 9.Bc4 Ba6 10.Ba6 Ra6=) 7...Nb6 (7...Ngf6 8.0-0 Nb6 9.Be2 Bd6 10.Be5 a6+=) 8.Be2 Ne7 (8...Nf6 9.0-0+= Bd6 10.Be5 a6+=) 9.0-0+= Bd7 (9...c6 10.a4 cb5+=) 10.Nc3 (10.a4 Nbd5+=) 10...Ng6 (10...Rc8+=) 11.a4 Bd6 (11...c6 12.a5 Nc8 13.a6+=) 12.a5 Nc8 13.a6 b6 (13...Rb8 14.Ne4 0-0 15.Qb3+/-) 14.Nd4 (14.Rc1 0-0+/-) 14...0-0 (14...e5 15.Nc6 Bc6 16.bc6+/-) 15.Qa4 (15.f4 e5 16.fe5 Be5+/-) 15...Qh4 (15...e5 16.Nc2+=) 16.f4+/- Qe7 (16...Nce7 17.Rac1+/-) 17.Bf3 Rb8 18.Bb7 (18.Rac1 e5 19.Nd5 Qh4+/-) 18...Bc5 19.Nc6 Bc6 20.Bc6 Qd6 (20...Qh4!?+/-) 21.d4+- Bb4 22.Ne4 (better is 22.f5 Bc3 23.Ba3+-) 22...Qd8?? (better is 22...Qe7+-) 23.Qb4 Nce7 24.Bb7 Nd5 (24...Qd7 25.Qc4+-) 25.Qb3 Nge7 26.Nd2 h6 (26...Nf6 27.e4+-) 27.e4 Nf6 28.Rf3 (28.d5 Ne8+-) 28...Qd7 (28...Ne8 29.Nc4+-) 29.Nc4 Nh7 (29...Qe8 30.Ne5 Qd8 31.Qc2+-) 30.Rg3 (better is 30.Ne5 Qd8+-) 30...Ng6 (30...f6 31.f5! Kh8 32.fe6 Qe6 33.d5+-) 31.d5 ed5 (31...Nf6 32.de6 Qe7 33.ef7 Kh7 34.e5+-) 32.Bd5 Ne7 (32...Kh8 33.f5 Ng5 34.Rg5 hg5 35.fg6 Qg4+-) 33.Rg7 Kh8 34.Rf7 Kg8 (34...Nf6 35.Bf6 Kg8 36.Qg3 Qg4 37.Qg4 Ng6 38.Qg6) 35.Rg7 Kh8 36.Rg8 1–0. pierred – kungen, internet, 2008.

6.c4 Ngf6 7.Nc3 Nb6 (7...dc4 8.Bc4 Bd6 9.d4 Nb6 10.Bd3 Nbd5+=; 7...Be7 8.cd5 ed5 9.Be2 0-0 10.0-0 Re8=) 8.cd5 ed5 9.a4 Bd6 10.a5 Nbd7 =.

6.c4 Ngf6 7.d4= a6 (7...Bb4 8.Bc3 Be7 9.Bd3 0-0 10.0-0 a6=; 7...Ne4 8.Bd3 Bb4 9.Nfd2 Nd2 10.Nd2 dc4+=) 8.ba6 ba6 9.Nc3 Rb8 10.Qc2 c5 =.

6.c4 Ngf6 7.Be2 Bd6 8.Nc3 0-0 9.d4 b6 10.cd5 ed5 11.Bd3 Re8 12.0-0 Re7 (12...Bb7 13.Qc2+=) 13.g3 (13.Qa4 Bb7+=) 13...h6 14.Qb3 Bb7 15.Rad1 a6 16.ba6 Ba6 17.Ba6 Ra6 18.Nd5 Nd5 19.Qd5 Nf6 (19...Qa8 20.Qa8 Ra8 21.a3+=) 20.Qc4 (20.Qb3 Qd7+/-) 20...Qa8+= 21.d5 Nd5?? (better is 21...Ra4 22.Qd3 Ne4+=) 22.Rd5+- (worse is 22.Qd5 Qd5 23.Rd5 Ra2+-) 22...Ra2 23.Bc3 (23.Be5 Rc2 24.Qb3 Rc5 25.Rd6 cd6 26.Bd6 Re8 27.Bc5 bc5+-) 23...Ra4 (23...Qa4 24.Qa4 Ra4 25.Rfd1+-) 24.Qd3 Ra3 25.Rc1 Qc6 (25...Re8 26.Kg2 f6+-) 26.Qd4 f6 (26...Rc3 27.Rc3 Qe8 28.Qd3+-) 27.Bb2 Qc1 (27...Qa8 28.Ba3 Qa3+-) 28.Bc1 Ra8 (28...Ra7+-) 29.Rd6 cd6 30.Qd5 Kh7 31.Qa8 1–0. mtrold1 – Daffodil, internet, 2001.

6.Bd3 Ngf6 A) 7.c4 a6 (7...Bd6 8.cd5 ed5 9.0-0 Nc5 10.Bc2 Bg4=; 7...Nc5 8.Be2 dc4 9.Bc4 a6 10.ba6 b6=) 8.ba6 ba6 9.cd5 ed5 10.0-0 Rb8=; B) 7.0-0 Bd6 8.Ba3 Ba3 9.Na3 Qe7 10.Nb1 e5=; C) 7.Qe2 Bd6 8.0-0 0-0 9.Re1 e5 10.e4 Re8+=; D) 7.Ne5 Ne5 8.Be5 Bd6 9.f4 a6 10.ba6 ba6=.

6.Be2 Ngf6 7.0-0 Bd6 8.c4 dc4 9.Bc4 b6 (9...0-0 10.d4=) 10.Nc3 Bb7 11.d4 0-0 12.Qe2 Ng4 13.e4 c5 14.bc6 Bc6 15.h3 Nh6 16.Rad1 White prepares the advance d5 16...Qc7 (16...Re8 17.Nb5 Bf4 18.Ne5 Ne5 19.de5+/-) 17.d5+/- ed5 18.Nd5 Bd5 19.Rd5 Rae8? (better is 19...Rfc8!? 20.Qd2 Nc5+-) 20.Rfd1+- (20.Rfd1 Ne5 21.Ne5 (21.Rd6?! Nc4 22.Rd7 Qc6+=) 21...Be5 22.Ba3+-) 1–0. Fritz 11 – anony, internet, 2013.

6.Be2 Ngf6 7.0-0 Bd6 8.d4 0-0 9.c4 dc4 10.Nbd2 Nb6 =.

6.Be2 Ngf6 7.0-0 Be7 8.a4 0-0 9.d4 c5 10.c4 dc4 +=.

5.c4 dc4 6.Bc4 e6 7.a4 Nf6 8.Nf3 Nbd7 9.0-0 Be7 10.d4 0-0 11.Nc3 Ne4 12.Ne4 Be4 13.Nd2 Bd5 14.Be2 b6 15.Bf3 Nf6 16.Rc1 (16.Qc2 Bf3 17.Nf3 a6+=) 16...Rc8 (16...Bf3 17.Qf3 (worse 17.gf3 a6=+) 17...a6 18.Qb7=) 17.Nc4 c5 18.bc6 Bc6 19.Bc6 Rc6 20.Ne5 Rc1 21.Qc1 Qd5 22.Ba3 (22.Qc7 Bd6 23.Qa7 Ne4+=) 22...Ba3= 23.Qa3 Rc8? (23...Nd7 24.Nd7 Qd7 25.Rb1=) 24.Rc1 (better 24.Qe7 Rf8 25.Qa7+-) 24...Qd8?? (24...Qb7 25.Qb2=) 25.Rc3?? (better 25.Nc6 Rc6 26.Rc6+-) 25...Nd5= 26.Rc8 Qc8 27.g3 f6 28.Nd3 Qc3 29.Qd6 Kf7 30.Qd7 Ne7 31.Nf4 Qc6 32.Qa7 g5 33.Nd3 h5 (33...Qc4 34.a5=) 34.Ne1 (34.Qa6 h4+-) 34...h4 (34...Qc1!? 35.Kf1 Qc4 36.Kg2 Qc6 37.f3 Qc3=) 35.gh4+- gh4 36.h3 f5? (36...Qc1 37.Kf1 Qc6+-) 37.Kf1?? (better 37.Nd3 Kf6 38.Ne5+-) 37...Kf6 (37...f4 38.Qa6 fe3 39.fe3 Qh1 40.Kf2 Qh2 41.Ng2 Qh3 42.Nf4 (42.Qb6? Qg3 43.Kg1 h3–+) 42...Qh2 43.Kf3=) 38.Qa6 Nd5 39.Qb5 Qc1 40.Ke2?? (better 40.a5 ba5 41.Qa5+-) 40...Nc3–+ 41.Kf1 Nb5 42.ab5 Qb2 43.Nd3 (43.Ng2 Qb5 44.Kg1 Qb1 45.Kh2 b5–+) 43...Qb1 44.Ke2 (44.Ne1 Qb5 45.Kg2 Qc6 46.Kg1 b5–+) 44...Qb5 (better 44...Qc2 45.Kf3 Qd3 46.Kg2 Qb5 47.Kg1–+) 45.Kd2 f4 46.Nf4 Kf5 47.Nd3 Ke4 48.Ne1 (48.Ne5–+) 48...Qb2 49.Nc2 Kf3 (49...b5!? 50.f3 Kf3 51.Kd3–+) 50.Kd3 (50.d5 ed5 51.Kd3 Kf2–+) 50...Qb3 (50...b5 51.e4 b4 52.Nb4 Qb3 53.Kd2 Qb4 54.Kc2 Qc4 55.Kb2 Qd4 56.Ka3 Qe4 57.Kb3 Qd3 58.Kb2 Kf2 59.Ka1 Qc3 60.Ka2 e5 61.Kb1 Qd2 62.Ka1 e4 63.Kb1 e3 64.Ka1 e2 65.Kb1 e1Q) 51.Kd2 Kf2 52.e4 Kf3 53.d5 Qd5 (better 53...e5–+) 54.Nd4?? (better 54.ed5 ed5 55.Ne3-/+) 54...Qd4 55.Kc2 Qe4 (55...b5 56.Kb3 Qc4 57.Ka3 Qc3 58.Ka2 b4 59.e5 Qc2 60.Ka1 Qg2 61.Kb1 b3 62.Kc1 Qc2) 56.Kb3 Kg3 57.Ka2 (57.Kc3 b5 58.Kb3 Qc4 59.Kb2 b4 60.Ka1 Qe2 61.Kb1 b3 62.Kc1 Qc2) 57...Kh3 (57...Qc4 58.Ka3 b5 59.Kb2 b4 60.Ka1 Qe2 61.Kb1 b3 62.Kc1 Qc2) 58.Kb3 (58.Kb2 Qe2 59.Kb3 Kg2 60.Kc3 Qd1 61.Kb2 Qd3 62.Ka2 h3 63.Ka1 h2 64.Kb2 h1Q 65.Ka2 Qhb1) 58...Kg3 59.Ka2 (59.Kc3 h3 60.Kb3 Qd3 61.Ka2 h2 62.Kb2 h1Q 63.Ka2 Qhb1) 59...h3 60.Ka3 (60.Kb3 h2 61.Kb2 Qc4 62.Ka3 h1Q 63.Kb2 Qhc1) 60...h2 61.Kb3 h1Q 62.Ka2 (62.Kb2 Qhb1 63.Kc3 Qbc2) 62...Qhf3 (62...Qhb1 63.Ka3 Qeb4) 63.Kb2 Qee2 64.Kb1 (64.Kc1 Qff1) 64…Qff1 0–1. BeepBeepImAJeep (2605) – Clovis99 (2405), lichess.org, 2017.

5.c4 dc4 6.Bc4 e6 7.Nf3 Nf6 8.0-0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Bd6 12.d4 0-0 13.Nbd2 Ne4 14.Be2 c6 15.bc6 Nc6 16.Ne4 Be4 17.Nd2 Bf5 18.e4 Bg6 19.e5 Be7 20.Nc4 Qc7 21.Qb3 h6 22.Bf3 Bg5 (22...Rd8 23.Rd1=) 23.Bc3 (23.Nd6 Ra8+-) 23...Bf5 (better 23...Rc8!? 24.Be2 Be7=) 24.Nd6+- Rb8 25.Nf5 ef5 26.e6 (26.Qb2 b5+-) 26...fe6 (26...Nd8!? 27.ef7 Nf7+-) 27.Qe6+- Kh7 (27...Qf7 28.Bd5 Qe6 29.Be6 Kf8 30.d5+- (30.Bf5?! Bf6=)) 28.Qf5 (better 28.d5 Nd8 29.Qf5 g6 30.Be5+-) 28...Kh8?? (28...g6 29.Qg4 Ne7+-) 29.d5 (better 29.Be4 Kg8 30.d5+-) 29...Ne7 30.Qe6?? (30.Be5 Nf5 31.Bc7 Rf8+-) 30...Qc8?? (30...Qc3 31.d6 Nc6 32.d7-/+) 31.Qf7?? (31.Be5 Ra8+-) 31...Qf8?? (better 31...Qc3 32.d6 Ng8-/+) 32.Bh5 (32.Qf8!? Rf8 33.d6 Nc6+-) 32...Qf7 33.Bf7 Rd8 34.Rd1 Nc6 (34...Bf4 35.Be6+-) 35.h4 (35.Rb1!? Ne7 36.Rb7 Nd5 37.Bd5 Rd5 38.Bg7 Kg8+-) 35...Bh4 36.g3 (better 36.Rb1!? Ne7 37.Rb7 Nd5 38.Bd5 Rd5 39.Rg7 Rd1 40.Kh2+-) 36...Bf6+- 37.Bf6 gf6 38.Rb1 Ne5 (38...Ne7 39.Rb7 Nd5 40.Bg6+-) 39.Be6 Kg7 (39...Rb8!?+-) 40.Rb7+- Kg6 41.Rb1 (better 41.f4 Nc4 42.f5 Kh5 43.Kg2+-) 41...Ng4?? (41...Nf3 42.Kg2 Nd4 43.Re1+-) 42.Kg2 (42.Bg4 Rd5 43.Bf3 Re5+-) 42...Nf2?? (better 42...Ne5+-) 43.Kf2 Kg5 44.Kf3 h5 45.Rb4 h4 (45...Rd6+-) 46.gh4 Kh5 47.Bf7 (47.Kf4 Kg6+-) 47...Kh6 48.Rg4 Rd5 (48...Rc8+-) 49.Rg6 (49.Bd5 f5 50.Rb4 f4 51.Rb7 Kg6 52.Kf4 Kf6 53.Rf7 Kg6 54.h5 Kh5 55.Be4 Kh4 56.Rh7) 49...Kh5 (49...Kh7 50.Rg1 Rd4+-) 50.Bd5 (50.Rg8 Kh6 51.Bd5 f5 52.Kf4 Kh7 53.Kf5 Kh6 54.Rg6 Kh5 55.Bf3 Kh4 56.Kf4 Kh3 57.Rh6) 50...Kg6= 51.Kg4 f5 52.Kf4 Kh5 53.Kg3 f4 54.Kh3 1–0. BeepBeepImAJeep (2560) – perkepon (1840), lichess.org, 2018.

5.c4 e6 6.a3 Nf6 7.Nf3 Nbd7 8.d4 b6 (8...dc4 9.Bc4 Bd6 10.0-0=) 9.Bd3 (9.Nc3 Bd6+=) 9...Bd3= 10.Qd3 Ne4 (10...a6 11.cd5 ed5 12.Nc3=) 11.Nc3 Ndf6 (11...Nc3 12.Qc3 dc4 13.Qc4+=) 12.0-0 (12.Ne5 Nc3 13.Qc3 Bd6+=) 12...Be7 (12...a6 13.cd5 ed5 14.ba6 Nc3 15.Bc3+/-) 13.Ne5 Nc3 14.Bc3 Ne4 (14...a6 15.ba6 0-0 16.Rfc1+=) 15.Nc6 Qd7 16.Ne7 (16.Bb4 Bd6+/-) 16...Qe7 17.Bb4 Qd7 18.a4 (18.cd5 ed5 19.Rfc1 Ng5+/-) 18...a5 (18...c6 19.a5 c5 20.Ba3+=) 19.ba6! Qc8 (19...Ra6 20.cd5 Decoy) 20.a5 (20.cd5 ed5 21.a5 Ra6+/-) 20...Ra6 (20...Qa6 21.Qb1 Qb7 22.cd5 ed5 23.Rc1+/-) 21.ab6 (21.cd5 ed5 22.Rfc1 Kd7+/-) 21...Rb6 22.Rfb1 Qd8 (22...Qb8 23.c5 Rb5 24.c6+/-) 23.c5 (23.Qc2 c6 24.cd5 ed5 25.Ra7+-) 23...Rb8+/- 24.c6 Nd6 (24...Rc8+/-) 25.Ba5 (25.Bd6 cd6 26.Rb8 Qb8 27.c7+-) 25...Rb1 (25...0-0 26.Bb4+=) 26.Rb1+/- 1–0. mtr – amt, internet, 2001.

5.c4 e6 6.a4 Nd7 7.Nf3 Ngf6 8.Be2 Be7 9.0-0 0-0 10.Nc3 c6 (10...dc4!? 11.Bc4 Bg4=) 11.Nd4 c5 (11...cb5!? 12.Nf5 ef5 13.cb5 Rc8+=) 12.Nf5+- ef5 13.Nd5 Ne5?? (better 13...Nd5 14.cd5 Re8+-) 14.Be5+- Nd5 15.cd5 Qd5 16.Bc3 (16.d4 Rfd8+-) 16...Rfe8 17.Bf3 Qd7 18.a5 Rac8 19.a6 b6 20.Bc6 Rc6 21.bc6 Qc6 22.Qf3 (22.Qb1 Qg6+-) 22...Qc8 (22...Qf3 23.gf3 f4 24.Rab1+-) 23.Qb7 Qe6 (23...Qb8+-) 24.Qa7 Qg6 (24...Bd6 25.Rfb1 b5 26.Rb5+-) 25.f4 (better 25.Qd7 Ra8 26.Qe7 Qc6+-) 25...Qg4 (25...Qc6+-) 26.Qb7 Bh4 (26...Bf8+-) 27.a7 g5 28.a8Q (28.a8R Bf2 29.Kh1 Qg2 30.Kg2 h5 31.Re8 Kh7 32.Qf7 Kh6 33.Qg7) 28...Ra8 (28...Qg2 29.Kg2 h5 30.Qe8 Kh7 31.Qbf7 Kh6 32.Qh5) 29.Ra8 (29.Qa8?!=) 1–0. BeepBeepImAJeep (2595) – ujang70 (1755), lichess.org, 2018.

5.c4 e6 6.a4 Nf6 7.Nf3 h6 8.Be2 Be7 9.0-0 0-0 10.d4 Nbd7 11.Nbd2 c6 12.Rc1 Ne4 13.Ne4 Be4 14.Nd2 Bg6 15.Qb3 f5 (15...a6 16.bc6 bc6 17.Ba3+=) 16.bc6 bc6 17.cd5 cd5 18.Nf3 Rb8 19.Qa2 Bf6 (19...Bh5!?=) 20.Ba3+- Re8 21.Bd6 Rc8 22.Ra1 White prepares the advance a5 (22.a5 Bh5+-) 22...Nb6+= 23.Bc5 (better 23.Bf4 Bh5 24.Ba6+-) 23...Qd7? (better 23...Nd7 24.Ba3 f4+=) 24.Bb5+- Qf7 25.Be8 Re8 26.a5 Nd7 27.Ba7 (better 27.Rfc1 Nc5 28.Rc5+- (28.dc5?! f4+=)) 27...f4? (27...Ra8 28.Bc5 Nc5 29.dc5 Ba1 30.Ra1+-) 28.ef4 (28.Qb3 Bh5 29.ef4 Bf3 30.Qf3 Ra8+-) 28...Be4? (better 28...Ra8 29.Bc5 Nc5 30.dc5 Ba1 31.Ra1 Be4+-) 29.Ne5 Ne5 30.de5 Bh4 31.f3 (better 31.Bb6!? Rc8+-) 31...Bd3?? (better 31...Qa7 32.Kh1 Bf5=) 32.Bf2 Bc4 33.Qb2 (33.Bh4?! Ba2 34.Ra2 Qf4=) 33...Qh5? (33...Bf1 34.Bh4 Ba6+-) 34.Rfc1 Bf2 35.Qf2 Qf5 36.Qd4 Rf8 (36...Ra8 37.Rcb1+-) 37.a6 Ra8 38.a7 g5 (38...Qf8 39.Rcb1 Qc8 40.Qb6+-) 39.Rab1 gf4 (39...Qf8 40.Rb7 Ba6+-) 40.Rb8 (40.Rb8 Kh7 41.Ra8+-) 1–0. BeepBeepImAJeep (2585) – strates (2115), lichess.org, 2016.

5.c4 e6 6.d4 c6 (6...Nf6 7.Nf3=) 7.Nc3+= Bb4 8.c5 (8.Qb3 Be7+=) 8...Qa5 (8...Nf6 9.Qb3 Bc3 10.Bc3=) 9.Qb3 Ne7 (9...Nf6 10.a3 Bc3 11.Bc3=) 10.a3 (10.Nf3 cb5 11.a3 Bc3 12.Bc3 Qc7+=) 10...Bc3 11.Bc3 Qc7 12.a4 Nd7 13.Nf3 f6 (13...0-0 14.a5+=) 14.Be2+- 0-0 15.0-0 e5 16.Nh4 Be6 17.g3 Bh3 18.Ng2 (18.Rfb1 Rab8+-) 18...Rfe8 19.Rfe1 Be6 (19...Nf5 20.Rab1+=) 20.Rac1 Rab8 21.Qc2 Bf5 22.Bd3 (22.Qd2!?+=) 22...Bg6= 23.Nh4 e4 (better 23...Bd3!? 24.Qd3 e4=) 24.Ng6 Ng6 25.Bf1 (25.Be2 Ndf8+-) 25...Rbc8 (25...Ndf8 26.Be2+=) 26.Bh3 (26.a5+-) 26...Ne7 (26...Ngf8 27.bc6 bc6 28.Rb1+-) 27.f3 (27.Be6!? Kf8+-) 27...f5 (27...ef3 28.Be6 Kh8 29.Qf2+-) 28.fe4 fe4? (better 28...de4 29.Qb3 Kh8+-) 29.Be6 Kh8 30.Qg2 (30.Ba5 b6 31.cb6 ab6 32.bc6 Nf6 33.Bc8 Rc8+-) 30...Ng8 (30...Rb8 31.Rb1+-) 31.Qh3 (better 31.Ba5! Qa5 32.Bd7 Nf6 33.Bc8 Rc8+-) 31...Ngf6 32.Rf1 Rcd8 33.Rf4 (33.Bf5!?+-) 33...Nf8 34.Bf5 Qf7 35.Rcf1 (35.Rf2 Ne6 36.Qh4 h6+-) 35...Ng6 (35...Ne6 36.Rg4 h6 37.Ba5=) 36.Bg6 (better 36.R4f2!? h6 37.Rb1+-) 36...Qg6+= 37.Be1 Rf8 38.Kh1 (better 38.Ba5 Rc8 39.Qe6+=) 38...Kg8? (better 38...cb5 39.Ba5 Rc8 40.ab5 Qe8+=) 39.bc6+- bc6 40.Qe6 Qf7 41.Qc6 Qd7 (41...Rde8 42.Kg2+-) 42.Qd7 Rd7 43.g4 Rdd8? (better 43...Rdf7 44.h3 Ne8+-) 44.Ba5 Rc8 45.g5 Ng4 (45...Nd7 46.Rf8 Nf8+-) 46.Rf8 (better 46.Bd2 h5 47.h3 Rf4 48.Rf4 (48.ef4?! e3 49.hg4 ed2+-) 48...Ne3 49.Be3+-) 46...Rf8+- 47.Rf8 (47.Rb1 Kf7 48.Rb3 Ke6+-) 47...Kf8 48.Bd2 Nf2 49.Kg2 Nd3 50.h4 (50.Kg3 Ke7+-) 50...Nb2+= 51.Kg3 Na4 52.Kf4 Nb2 53.Kf5 (53.c6 Ke7 54.g6 hg6+=) 53...Nc4= 54.Bc1 (54.Ke6 Nd2 55.c6 Nc4 56.Kd5 Ne3 57.Ke4 Nc4=) 54...Ke7 (better 54...Kf7 55.g6 hg6 56.Kg5 Na5-/+) 55.h5 White intends g6 55...a5 56.g6 h6 57.c6 Kd6 (57...a4!? 58.c7 Kd7 59.c8B Kc8=) 58.c7+= Nb6?? (58...Kc7 59.Ke6 Combination) 59.Ba3+- Kd7 60.Bc5 (better 60.Bf8 a4 61.Bg7+-) 60...Na4?? (60...Nc4 61.Kf4 a4–+) 61.Bf8+- Kc7 62.Bg7 Nc3 63.Bh6 Nb5 64.Bf8 1–0. Polischuk,Vyacheslav (1875) – Yaganov,Alikhan, Nalchik Russia, SKFO Championship, 2013.

5.d4 Nf6 6.Nf3 e6 7.Nbd2 c6 8.a4 Bb4 9.c3 Be7 10.Qb3 Qc7 11.c4 0-0 12.Be2 Nbd7 13.h3 h6 14.0-0 Rfc8 15.Rfc1 Qd8 16.c5 Kh8 17.Ne5 (better is 17.a5!?+=) 17...Ne5+= 18.de5 Nd7 19.Bd4 cb5 20.Qb5 a6 Increasing the pressure on the isolated pawn on c5 21.Qb7 Rcb8 22.Qc6 Rc8 23.Qb7 Rcb8 24.Qc6 Rc8 ½–½. Ocko,Martin (1735) – Puskar,David (1705), Stara Lubovna SVK, Ch U14 (b), 2013.

5.Nf3 Nd7 6.c4 dc4 7.Bc4 Nc5 8.d4 Ne4 9.0-0 e6 10.Ne5 Bd6 (better is 10...Qg5!?+=) 11.f3+/- Be5 12.fe4 Bh2 13.Kh2 Be4 14.Nd2 Qh4 15.Kg1 Qh6?? (better is 15...Bd5+-) 16.Ne4 Qe3 17.Nf2 Nf6 18.Rc1 0-0 (18...Qg5 19.Qf3 0-0-0 20.Nd3+-) 19.Rc3 Qg5 20.Qc2 (better is 20.Bc1 Qf5+-) 20...Qf4 (20...Nd5 21.Ne4 Qd8 22.Bd5 Qd5+-) 21.Rf3 Qg5 22.Bc1 Qg6 (22...Qh4 23.g4! Rad8 24.Rh3 Qh3 25.Nh3 Rd4 26.g5+-) 23.Bd3 Qh5 24.Rh3 Qh3 25.Nh3 h6 (25...Rad8 26.Rf6! gf6 27.Qf2 Rfe8 28.Bh6 Rd5 29.Qf6 Rg5 30.Qg5 Kh8 31.Qg7#) 26.Rf6! g6 (26...gf6 27.Bh7 Double attack) 27.Bh6 Rfd8 28.Qc7 Kh7 (28...Rf8 29.Rg6! Kh8 30.Bg7 Kh7 31.Bf6 Rfc8 32.Qf7#) 29.Qf7 Kh6 30.Qg6# 1–0. marekt – johnny_l, ChessWorld.net, 2012.

5.Nf3 e6 6.Bc1 Bb4 7.Nd4 Bg6 8.h4 f6?? (better 8...h5=) 9.h5+- Bf7 10.Qg4 e5? (better 10...Ne7 11.Bb2 c5 12.bc6 Nbc6 13.Qg7 Rg8 14.Qf6 Nd4 15.Qd4 Nc6+-) 11.Qg7 (11.Qg7 ed4 12.Qh8+-) 1–0. Janek – tobokin, internet, 2017.

5.Nf3 e6 6.c4 Nf6 7.cd5 Bb1 8.de6 (better 8.Rb1 Nd5 9.e4+=) 8...Bg6-/+ 9.Bc4 fe6 10.Ng5 Nd5?? (better 10...Bf5-/+) 11.Ne6+- Qd6 (11...Qe7 12.Bd5 c6 13.Rc1+- (13.Nf8?! Rf8 14.bc6 Nc6+-)) 12.Bd5 Bf7 (12...c6 13.Bb3 Qe7+-) 13.Bb7 Be6 14.Ba8 1–0. DEFFM – Semew, freechess.org, 2018.

5.Nf3 e6 6.c4 Nf6 7.cd5 Nd5 8.Bc4 (8.Nc3 Nc3 9.Bc3 Nd7=) 8...Nb4 9.0-0 (9.Nd4 Bd3 10.Qb3 Nd7=+) 9...Nd3 (9...Nc2!? 10.Nd4 Na1 11.Nf5 ef5=) 10.Bd4= Be7 (10...c5 11.bc6 Nc6 12.Qb3+=) 11.Qe2+= Nb4 12.d3 (worse 12.Bg7 Rg8 13.a3 Nc2=+) 12...0-0 (better 12...Bf6!?+=) 13.a3+- c5 14.e4 (14.ab4?! cd4 15.Nd4 Bf6=) 14...Bg4 15.Bb2 Nd3? (better 15...Bf3!? 16.gf3 N4c6 17.bc6 Nc6+-) 16.Bd3 (16.Qd3?! Qd3 17.Bd3 Bf3 18.gf3 Rd8+-) 16...Nd7 17.Nbd2 Bf6 18.e5 (18.Bf6 Qf6 19.e5 Qh6+-) 18...Ne5 19.Be5 Be5 20.Bh7! Kh7 21.Qe5 f6 (21...Qd5 22.Qg3 Bf3 23.Nf3+- (23.Qf3?! Qd2 24.Rfd1 Qa5=)) 22.Qc5 Rc8 (22...Qd3 23.Qb4 Qg6 24.h3+-) 23.Qa7 Rc2 (23...Qd5 24.Qa4 Bf5 25.Rfd1+-) 24.Qb7 (24.Qa4 Bf5 25.Rfd1 Qd5+-) 24...Rd2 25.Nd2 Qd2 26.a4 Kg6 (26...Qf4 27.Rfc1+-) 27.a5 Qh6 (27...Qf4 28.b6+-) 28.a6 Rh8 (28...Qh8 29.b6 Kh7 30.Qc6+-) 29.h3 Be2 (29...Bh3 30.gh3 Qh3 31.Qg2 Qg2 32.Kg2+-) 30.Qe4 f5 1–0. DEFFM – GuesFLHC, freechess.org, 2018.

5.Nf3 e6 6.Be2 =.

5.Nf3 f6 6.Nh4 Be6 7.Bd3 Bf7 8.0-0 (8.Ba3 Nd7=) 8...e5 9.f3 Bc5 10.Kh1 (10.Nf5 g6 11.Ng3 Nd7=) 10...Ne7=+ 11.Nf5 Nf5 (11...0-0 12.Qe1=+) 12.Bf5= g6 13.Bh3 Nd7 14.d4 Bd6 15.de5 fe5 16.f4 0-0 17.Bd7 Qd7 18.fe5 Bc5 (18...Qb5 19.ed6 Qb2 20.Nd2=+) 19.a4 (19.Qd3 Be6 20.Nc3 a6+=) 19...Be6= 20.Bd4 Be7 21.Nd2 b6 (21...a6 22.Qe2=) 22.Qe2 Bg4 (22...c5 23.bc6 Rf1 24.Nf1 Qc6 25.a5=) 23.Qd3+= Qe6 (23...Bf5 24.e4 de4 25.Ne4+=) 24.Rf8 Rf8 25.Rf1 (25.a5 Bf5 26.Qb3 Bg5+-) 25...Bg5? (better 25...c5!? 26.bc6 Rf1 27.Nf1 Qc6=) 26.Rf8+- Kf8 27.Kg1 (27.h3 Bf5 28.e4 de4 29.Ne4 Be7+-) 27...Bf5 (27...c5 28.bc6 Qc6 29.e4+=) 28.Qb3 (28.Qc3 Bd8+-) 28...Be7 (28...c5 29.bc6 Qc6 30.c3+=) 29.c4 (29.Qc3!? Qd7 30.e4 de4 31.Be3+-) 29...dc4= 30.Qc4 Qc4 31.Nc4 Bc2 32.a5 (32.Nb2 Bb3=) 32...Bb4 (better 32...Bd3!? 33.ab6 ab6-/+) 33.ab6= ab6 34.e6 (better 34.e4!?=) 34...Bd3-/+ 35.Ne5 Bb5 36.Nd7 (36.Kf2 c5 37.Ba1 c4-/+) 36...Bd7–+ 37.ed7 Ke7 0–1. Abdullaevich (1850) – Bishopwreck (1865), lichess.org, 2020.

5.Nf3 Nf6 6.c4 e6 7.d4 Bb1 8.Rb1 Bb4 9.Nd2? (9.Ke2 dc4 10.Rc1 0-0=) 9...0-0 (better is 9...Ne4 10.Bc1 Nc3-/+) 10.a3 Be7 11.c5 Nbd7 12.Bd3 h6 13.Nf3 Nh7 14.0-0 Ng5 15.Ng5 Bg5 16.f4 Be7 17.Qg4 f5 18.Qg6 Rf6 19.Qh5 Rf8 20.Rf3 Nf6 21.Qg6 Qe8 22.Rg3 Qg6 23.Rg6 Kh7 24.Rg3 Ne4 25.Be4 fe4 26.Rf1 Bh4 27.Rg4 Be7 28.Rg3 Rf5 (28...a6 29.ba6 Ra6 30.Rc1+=) 29.a4 b6 (29...Raf8 30.Rh3+=) 30.c6 (30.Rc1!?+=) 30...a6= 31.Ra1 ab5 32.ab5 Ra1 33.Ba1 Rf8 34.h4? (better is 34.Bc3-/+) 34...Bh4 (34...Ra8!? 35.Bc3 Ra3 36.Bd2–+) 35.Rh3 Be7 (35...Be1 36.Kf1 Bb4 37.Bb2–+) 36.g4 g6 37.g5 (37.Bc3!?–+) 37...h5 38.Rh2 Ra8 39.Bc3 Ra3 40.Bd2 Ra1 41.Kf2 Ra2 42.Ke1 Kg7 43.Re2 Kf7 44.Bc1 Bb4 (44...Ra5 45.Kf2 Rb5 46.Rc2–+) 45.Kd1 Re2 (better is 45...Ra1 46.Kc2 Ra5–+) 46.Ke2-/+ h4 47.Kf1 Ke7 48.Kg2 Be1 49.Kh3 Bg3 50.Kg4 Bf2 51.Bd2 Kf7 52.Bc1 ½–½. Fournier,Frederic (2005) – Almeidav (1955), Active, 2004.

5.Nf3 Nf6 6.Be2 g6 7.Nh4 Be6= 8.0-0 Bg7 9.f4 c6 (9...a6 10.f5 Bc8 11.Na3=) 10.a4 Ne4?? (better 10...0-0+=) 11.Bg7+- Rg8 12.Bb2 Nd7 13.Nc3 Ndf6 14.Ne4 de4 15.bc6 bc6 16.Bd4 h5 (16...g5 17.fg5 Rg5 18.Rf4+-) 17.Ba6 (17.Rb1 Qa5+-) 17...Ng4 (17...Qd6 18.Rb1+-) 18.h3 Bc8 (18...Nf6 19.Bb7 Rb8 20.Rb1+-) 19.Bc8 Qc8 (19...Rc8 20.hg4 e5 21.fe5 Qh4 22.Rf4 hg4 23.Ba7+-) 20.hg4 hg4 21.Qe2 Qe6 (21...g3 22.Rab1+-) 22.f5 gf5 23.Nf5 Qg6 (23...f6+-) 24.Rab1 f6 25.Qc4 Rc8 26.Qe6 Rc7 (26...Qf5 27.Rf5 Kf8 28.Qc8 Kf7 29.Rf6 ef6 30.Rb7 Kg6 31.Qg4 Kh6 32.Qg8 a6 33.Rh7) 27.Rb8 Rc8 28.Rc8 (28.Qe7?!=) 1-0. DEFFM – SujithLenin, freechess.org, 2021.

5.Nf3 h6 6.Nd4 Bh7 7.Be2 Nf6 8.0-0 e6 9.c4 Bc5 10.cd5 Nd5 (worse is 10...Qd5 11.Bf3 Be4 12.Nc3+-) 11.Nc3 (better is 11.Nb3 Bf8 12.Nc3+=) 11...Qh4 (better is 11...Bd4 12.ed4 0-0=) 12.Nd5+/- ed5 13.Nf3 Qe7 (13...Qg4 14.Qb3 Qe6 15.Qc3+/-) 14.Bg7+- Rg8 15.Bh6 Nd7 16.Qb3 0-0-0 (16...Nb6 17.Bf4+-) 17.g3 (17.d4 Rg6 18.Bf4 Bd6 19.Bd6 Qd6+-) 17...Bb6 (17...Nb6 18.Bf4+-) 18.Qd5 Nf6? (18...Be4 19.Qh5+-) 19.Qc4 (19.Qe5!? Qe5 20.Ne5 Rd2+-) 19...Be4 20.d3 Bd5 21.Qf4 Kb8 (21...Qe6 22.Bg5 Nh5 23.Qh4+-) 22.Rfc1 (22.Qe5 Qe5 23.Ne5 Ba5+-) 22...Nh5 (22...Ng4 23.Bg5 f6 24.Qg4 fg5 25.d4+-) 23.Qe5 Nf6 (23...Qe5 24.Ne5 f6+-) 24.Qe7 Rd7 25.Qf6 Be6 26.Ne5 Rd6 27.Nf7 Bh3 28.Nd6 cd6 29.Qd6 Ka8 30.Bf3 Rd8 31.Bb7! Kb7 (31...Kb7 32.Qc6 Mate attack) 32.Qc6 Kb8 33.Bf4 (33.Bf4 Rd6 34.Qd6 Bc7 35.Qc7 Ka8 36.Qc6#) 1–0. kwuk – tesy, internet, 2009.

5.Ba3 a6 A) 6.ba6 Na6 7.Nf3 e5 8.Bb5 c6 9.Bf8 Kf8=; B) 6.c4 e5 7.Bf8 Kf8 8.ba6 Na6 9.cd5 Qd5=; C) 6.Bd3 Nh6 7.ba6 Na6 8.Nc3 e5 9.Bf8 Kf8=; D) 6.Qf3 ab5 (6...Nh6 7.c4 dc4 8.ba6 Na6 9.Bc4 c6=; 6...f5 7.ba6 Na6 8.d4 Nf6 9.Bd3 Ne4=; 6...g6 7.c4 d4 8.ed4 ab5 9.Qc3 bc4=) 7.Bb5 c6 8.Bd3 Nh6 9.e4 Nd7=; E) 6.Nf3 Nh6 (6...ab5 7.Bb5 c6 8.Be2 Nd7 9.0-0 e5=; 6...Bg4 7.h3 Bd7 8.ba6 Na6 9.Bd3 e6=; 6...c6 7.ba6 Na6 8.c4 Bg4 9.Qb3 Bf3=) 7.ba6 Na6 8.d4 Bg4 9.h3 Bf5=.

5.Ba3 Bf5 A) 6.Nf3 Nh6 (6...Nd7 7.Nd4 Nh6 8.Nf5 Nf5 9.Bd3 e6+=) 7.d4 a6 8.ba6 Na6 9.c4 e5=; B) 6.c4 dc4 7.Bc4 Bd3 8.Bd3 Qd3 9.Nc3 a6+=.

5.Ba3 Nh6 A) 6.d4 Bg4 (6...Bf5 7.c4 c6 8.Nc3 Qa5 9.Qb3 e5+=; 6...c6 7.c4 Bg4 8.Qb3 e5 9.Bf8 Rf8+/-) 7.Be2 Be2 8.Ne2 Qd7 9.0-0 Qb5=; B) 6.Nf3 Bf5 (6...a6 7.ba6 Na6 8.d4 Bg4 9.h3 Bh5=; 6...e5 7.Bf8 Rf8 8.Be2 Nf5 9.0-0 a6=; 6...Bg4 7.Be2 e5 8.Bf8 Rf8 9.0-0 Qd6=) 7.d4 a6 8.ba6 Na6 9.c4 e5=; C) 6.c4 e5 (6...d4 7.ed4 Qd4 8.Nc3 e5 9.Nf3 Qb6+=; 6...Bg4 7.Qb3 d4 8.Bd3 de3 9.de3 Nd7+=) 7.Bf8 Rf8 8.cd5 Qd5 9.Qc2 Qf7+=.

5.Nc3 e5 6.d4 Bd6 (6...ed4!? 7.Qd4 Be6= 8.Nf3 a6 9.Qa4 Qd6+=) 7.Nd5+/- Be6 (7...c6 8.de5 fe5 9.Nc3 Nf6+/-) 8.de5 Be5 (8...fe5 9.Bc4 c6+/-) 9.Be5 fe5 (9...Bd5+-) 10.Qh5 Kf8 11.Nc3 Nd7 12.Qf3 Ngf6 13.Qb7 Kf7 14.Nf3 Re8 15.Ng5 Kg6 16.Ne6 Re6 17.Qf3 e4 (17...Nc5 18.Bc4 Rd6 19.Qg3 Kh6 20.Bf7+-) 18.Qg3 Kf7 19.Bc4 (19.Bc4 Nf8 20.Rd1+-) 1–0. pierred – kingmo, internet, 2008.

5.Nc3 Bf5 6.Qh5 g6 7.Qf3 c6 8.bc6 bc6 9.e4 de4 =.

5.c4 A) 5...e5 6.cd5 (6.d4 ed4 7.Bd4 dc4 8.Bc4 c5 9.bc6 Nc6+=) 6...Qd5 7.Nc3 Qd8 8.Nf3 Bd6 9.d4 Ne7+=; B) 5...e6 6.Bd3 (6.d4 a6 7.Bd3 Nh6 8.Qa4 dc4 9.Bc4 c6=; 6.Nc3 Ne7 7.d4 a6 8.Nf3 ab5 9.cb5 Nd7+=; 6.Qh5 g6 7.Qf3 a6 8.cd5 Qd5 9.Nc3 Qd8+=; 6.Nf3 a6 7.cd5 ed5 8.Nd4 Ne7 9.Qa4 c6=) 6...Nh6 (6...g6 7.Nc3 Ne7 8.Nf3 a6 9.cd5 Nd5+=) 7.Nc3 d4 8.ed4 Qd4 9.Qe2 Qd7+=.

5.d4 Bf5 A) 6.Ba3 a6 (6...c6 7.c4 Be4 8.f3 Bf5 9.bc6 bc6+=) 7.ba6 Na6 8.Bd3 Bd3 9.Qd3 c6=; B) 6.c4 e6 7.Nf3 a6 8.Qb3 Ne7 9.ba6 b6+=; C) 6.Be2 e6 (6...c6 7.c4 cb5 8.cd5 Qd5 9.Nc3 Qd8+/-; 6...a6 7.Nf3 e6 8.Nh4 Nh6 9.0-0 ab5=) 7.Nf3 a6 8.Nh4 Nh6 9.0-0 ab5=; D) 6.Nf3 e6 7.c4 a6 8.Qb3 Ra7 9.Nc3 Ne7+=.

5.Be2 a6 A) 6.f4 Nh6 (6...ab5 7.Bb5 c6 8.Be2 Nd7 9.Nf3 Qc7=; 6...Bf5 7.Nf3 Nh6 8.Nd4 ab5 9.Bb5 c6=) 7.Nf3 ab5 8.Bb5 Bd7 9.Be2 e6=; B) 6.Nf3 ab5 (6...e5 7.a4 ab5 8.ab5 Ra1 9.Ba1 Bd6=) 7.Bb5 c6 8.Be2 e5 9.0-0 Bd6=; C) 6.ba6 Na6 7.Ba3 e5 8.Bf8 Kf8 9.Nf3 Kf7=; D) 6.Nc3 ab5 (6...e5 7.d4 e4 8.ba6 ba6 9.Rb1 Be6=) 7.Bb5 c6 8.Be2 e5 9.Nf3 Bd6+=; E) 6.d4 e6 (6...Bf5 7.Nf3 ab5 8.Nh4 Nh6 9.Nf5 Nf5=) 7.Nf3 ab5 8.Bb5 Bd7 9.Bd3 Nc6=.

5.Be2 e5 6.d4 ed4 (6...e4 7.c4 Be6 8.cd5 Qd5 9.Nc3 Bb4+=; 6...Bd6 7.de5 Be5 8.Be5 fe5 9.c4 Nf6+=; 6...Bb4 7.c3 Ba5 8.Qa4 Bb6 9.c4 ed4+=) 7.Bd4 a6 8.Nf3 ab5 9.Bb5 Bd7=.

5.Be2 e5 6.Nf3 a6 (6...Bd6 7.c4 e4 8.Nd4 Ne7 9.cd5 Nd5+=; 6...Be6 7.0-0 Bb4 8.d4 e4 9.Nfd2 a6+=) 7.a4 Bd6 8.Nc3 Ne7 9.0-0 Be6=.

5.Be2 e5 6.Bh5 g6 7.Bg4 Bg4 8.Qg4 Nh6 (8...Qd7 9.Qd7 Nd7 10.Nc3=+) 9.Qe6= Qe7?? (better 9...Be7!?=) 10.Qd5 (better 10.Qc8!? Qd8 11.Qb7+-) 10...c6+- 11.bc6 bc6 (11...Nc6 12.Nf3+-) 12.Qa5 Nf5 13.Nf3 c5 14.Qb5 Nd7 15.Qc6 Rd8 (15...Rb8 16.Bc3+-) 16.0-0 (16.Nc3 Kf7+-) 16...Qd6 17.Qa4 Be7 18.Qb3 (18.Na3 Rb8 19.Rfb1 Rb4 20.Qa7 Qc6+=) 18...Nb6 (18...Rb8!? 19.Qc3 Nb6=) 19.d3 Nd5? (better 19...c4 20.dc4 Qc6+-) 20.e4+- Nd4 (20...Rb8 21.Qa3 Nf4 22.ef5 c4 23.Qa4 Qd7 24.Qd7 Kd7 25.Ne5 fe5 26.Be5 Bd6 27.Bh8 cd3+-) 21.Qd5?? (21.Bd4 cd4 22.ed5 Qd5+-) 21...Nf3?? (better 21...Qb6 22.Qc4 Nf3 23.gf3 Qb2+=) 22.gf3+- Qd5 23.ed5 Rd5 24.Nc3 Rd6 (24...Rd7+-) 25.Nb5?? (better 25.Rfb1+-) 25...Rb6+- 26.c4 0-0? (better 26...a6 27.a4 Kf7+-) 27.Rab1 Rfb8 28.a4 (better 28.Ba1!?+-) 28...a6+- 29.f4 ab5 30.ab5 Re6? (better 30...ef4!? 31.Rfd1 Kf7+-) 31.fe5+- fe5 32.f4 (32.Rfe1 Bd6+-) 32...ef4 33.Rf4 Bd6 34.Re4 Re4 35.de4 Re8 36.Re1 Kf7 37.Re2 g5 38.h3 (38.e5 Bb8+-) 38...Kg6 (38...Bf4 39.Kg2+-) 39.Kg2 h5 40.e5 Bf8 41.Bc1 Re6 42.h4! gh4 43.Kh3 Bg7 44.Rg2 Kf7 45.Kh4 (45.Rf2 Ke7+-) 45...Be5 46.Kh5 Bd4 47.Rg6?? (better 47.Bb2+-) 47...Re1 (better 47...Rg6 48.Bg5 Rg7–+) 48.Bg5 Rb1?? (better 48...Rh1 49.Bh4 Rh4 50.Kh4 Kg6–+) 49.Rh6 (49.Rc6 Rb4 50.Kg4 Ke8+-) 49...Ke8 (49...Rb4!?+=) 50.Re6 (50.Rd6 Kf7+-) 50...Kd7+- 51.Re7 Kd6 52.Rb7 (better 52.Re2!?+-) 52...Ke5+= 53.Rc7 (53.Rd7 Kf5+=) 53...Ke4= 54.Be7 The isolani on c5 becomes a target 54...Kd3 55.Bc5 Bc5?? (better 55...Kc4 56.Ba7 Kd3=) 56.Rc5+- Kd4 57.Rc6 Rb4 58.Kg6 Ke5 59.Kf7 Kd4 60.Ke6 Ke4 61.Kd6 Kd4 62.Rc5 (better 62.Kc7 Rb2 63.b6+-) 62...Rc4 (62...Rb1 63.Kc6 Rh1+-) 63.Rc4 Kc4 64.b6 Kb5 White now must not overlook the idea Ke5 65.Kc7 Kc4 66.b7 Kd3 67.b8Q Ke4 68.Qb5 Kf3 ½–½. Akrapovik (1700) – Darkomicron (1725), lichess.org, 2021.

5.Be2 Bf5 6.c4 e5 (6...e6 7.cd5 ed5 8.Nc3 a6 9.Qb3 Ne7+=; 6...dc4 7.Bc4 Bd3 8.Qb3 Bc4 9.Qc4 a6=) 7.cd5 Ne7 8.d4 e4 9.Ba3 Nd5=.

5.Be2 Nh6 A) 6.c4 dc4 (6...e5 7.d4 ed4 8.Qd4 Be6 9.cd5 Qd5+=) 7.Bc4 e5 8.d4 ed4 9.Qd4 Qd4=; B) 6.d4 a6 (6...Bf5 7.Nf3 a6 8.c4 dc4 9.Bc4 ab5=; 6...e6 7.c4 a6 8.Qa4 c6 9.Nf3 dc4=; 6...c6 7.Nf3 Bg4 8.c4 dc4 9.Bc4 Nf5+=) 7.Nf3 ab5 8.Bb5 Bd7 9.Bd3 e6=; C) 6.f4 a6 (6...Bf5 7.Nf3 e6 8.0-0 Bc5 9.Nd4 0-0+=) 7.Nf3 ab5 8.Bb5 Bd7 9.Be2 e6=; D) 6.Nf3 e5 7.0-0 Be6 8.d4 e4 9.Nfd2 a6+=.

5.Nf3 Nd7 6.Be2 Ngf6 7.0-0 Bd6 8.c4 dc4 9.Bc4 b6 (9...0-0 10.d4=) 10.Nc3 Bb7 11.d4 0-0 12.Qe2 Ng4 13.e4 c5 14.bc6 Bc6 15.h3 Nh6 16.Rad1 Qc7 (16...Re8 17.Nb5 Bf4 18.Ne5 Ne5 19.de5+/-) 17.d5+/- ed5 18.Nd5 Bd5 19.Rd5 Rae8? (better is 19...Rfc8!? 20.Qd2 Nc5+-) 20.Rfd1+- (20.Rfd1 Ne5 21.Ne5 (21.Rd6?! Nc4 22.Rd7 Qc6+=) 21...Be5 22.Ba3+-) 1–0. Fritz 11 – anony, internet, 2013.

5.Nf3 e5 6.c4 Ne7 (6...Be6 7.cd5 Bd5 8.Nc3 Ne7 9.Nd5 Nd5+=; 6...c6 7.Nc3 Be6 8.d4 e4 9.Nd2 dc4+=; 6...e4 7.Nd4 Ne7 8.Qh5 g6 9.Qh4 Bg7+/-) 7.d4 e4 8.Nfd2 f5 9.Qh5 g6+=.

5.Nf3 e5 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Bd6 10.c4 Ne7 (10...dc4 11.Bc4 Bg4 12.Nc3=) 11.cd5 (11.d4 e4 12.Nfd2 Bb4+=) 11...Nd5= 12.Qb3 Be6 (better 12...Nb6=) 13.Bc4+/- c6 (13...Bc5 14.Nc3 Nc3 15.Be6+- (15.Qc3?! Bc4 16.Qc4 Qe7+=; 15.dc3?! Bc4 16.Qc4 Qd6=; 15.Bc3?! Bc4 16.Qc4 Qe7+=)) 14.bc6+- bc6 15.e4 Nf4 (15...Qa5 16.ed5 cd5 17.Bb5 Bd7 18.Bd7 Nd7 19.Bc3+-) 16.Be6 Ne6? (16...Qe7 17.Bc4 Ng2 18.Kf1 Nf4+-) 17.Qe6 Qe7 18.Qc8 Qd8 19.Qe6 Qe7 20.Qc4 Qa7 21.0-0 Qa1 (21...Qf7 22.Qc2+-) 22.Qe6 Be7 23.Qc8 Bd8 24.Qb8 0-0 (24...Qa4 25.Nc3 Qc4+-) 25.Qb3 Rf7 26.Na3 Qf1 27.Kf1 1-0. onur604 (2320) - ni_kaiq (2265), Casual Rapid game, lichess.org, 2021.

5.Nf3 e5 6.Be2 a6 7.ba6 Na6 8.0-0 Be6 9.d4 e4=.

5.Nf3 e5 6.Be2 Bb4 7.0-0 Ne7 8.c4 Be6 9.d4 e4+=.

5.Nf3 e5 6.Be2 Bd6 7.c4 dc4 8.Bc4 a6 9.Qb3 Nh6=.

5.Nf3 e5 6.Be2 Be6 7.0-0 Nh6 8.d4 e4 9.Nfd2 a6+=.

5.Nf3 Bg4 A) 6.Be2 e5 (6...Nh6 7.c4 dc4 8.Bc4 e5 9.Nc3 a6=) 7.Nc3 Ne7 8.0-0 a6 9.ba6 Na6=; B) 6.d4 e6 (6...a6 7.h3 Bf5 8.Nh4 Nh6 9.Nf5 Nf5+=) 7.Bd3 a6 8.h3 Bh5 9.0-0 ab5=; C) 6.h3 Bh5 7.d4 e6 8.c4 a6 9.c5 e5=.

5.Nf3 Nh6 A) 6.d4 Bg4 (6...Bf5 7.c4 e6 8.Qb3 Qd7 9.Nc3 c6+=) 7.c4 e6 8.Bd3 a6 9.Qb3 Bf3+=; B) 6.Be2 Bg4 (6...e5 7.c4 e4 8.Nd4 dc4 9.Bc4 Nf7+=) 7.d4 e6 8.c4 c6 9.0-0 dc4+=; C) 6.c4 e5 7.cd5 Qd5 8.Nc3 Qd8 9.d4 ed4+=.

5.a4 a6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 e6 9.Rg1 Nbd7 10.g4 h6 11.h4 c6 12.g5 hg5 13.hg5 Ne4 14.d3 (14.Nc3 Qc7=) 14...Nd6 (14...Qa5!? 15.Nbd2 Nd2 16.Nd2 Qb5-/+) 15.bc6= bc6 16.Nd4 Bb7 17.Nd2 c5 18.N4f3 Nf5 19.Bg2 g6?? (better 19...Qa5=) 20.Qb1 (better 20.Bh8 Be7+-) 20...Rh5 (20...Rh4 21.Nh4 Nh4 22.Qb7 Qg5 23.Kf1 Ng2 24.Rg2+-) 21.Qb7 d4 (21...Be7 22.c4+-) 22.ed4 cd4 23.Nd4 Nd6 24.Qc6 Be7 (24...Qg5 25.N4b3+-) 25.Nb5 (better 25.f4 Kf8+-) 25...Nb5 26.Qb5 Rg5 27.Qb2 Bf6 28.Qb1 Ba1 29.Qa1 Re5 30.Kf1 Ra5 31.Qe1 Qc8 (31...Qf6 32.Ne4 Qe5 33.Ke2+-) 32.Nc4 Rc5 (32...Ra6+-) 33.Nd6 Ke7 (33...Kd8 34.Nc8 Kc8 35.Rh1+-) 34.Nc8 Rc8 35.Qb4 Rc5 (35...Kf6 36.Qh4 Kg7+-) 36.d4 Kd6 37.dc5 Nc5 38.Ke2 Ke7 (38...e5 39.Rd1 Ke7 40.Qc5 Kf6 41.Qd6 Kg7 42.Qe5 f6 43.Rd7 Kh6 44.Qf4 g5 45.Qh2 Kg6 46.Qh7) 39.Qc5 Kf6 40.Be4 e5 41.f4! Kg7 (41...ef4 42.Qd6 Double attack (42.Qd6 Decoy)) 42.fe5 (42.Qe5 Kg8 43.Rh1 f6 44.Qf6 g5 45.Rh8) 42...Kh6 (42...Kg8 43.Qc8 Kg7 44.Rh1 f5 45.Bd5 g5 46.Qg8) 43.Qe7 (43.Qf8 Kh5 44.Qh8) 43...f5 (43...Kg7 44.Rg6 Kh8 45.Qh4) 44.Qf6 (44.Rh1) 44...Kh5 (44...Kh7 45.Qg6 Kh8 46.Rh1) 45.Rh1 (45.Qg5) 45...Kg4 46.Qg6 (46.Qh4) 46...Kf4 47.Qf5 Kg3 48.Qf3 (48.Rh3) 1–0. FeegLood (2740) – KnightSeeSix (2695), lichess.org, 2016.

5.a4 c6 6.c4 e6 7.Nf3 Bd7 8.Nc3 dc4 9.Bc4 cb5 10.ab5 Be7 11.0-0 0-0 12.d4 Qb6 13.Ne5 Be8 14.Qb3 Nfd7 15.Na4 Qd8 16.Ng4 Nf6? (16...Bd6+=) 17.Ne5 (better 17.Nf6!? gf6 18.Rfd1+-) 17...Nbd7 (17...Nfd7!?=) 18.Nf3 Nb6 19.Nb6 Qb6 20.Rfc1 Ne4 (20...Rc8 21.Ra2+=) 21.Bd3+- Nd6 (21...f5+-) 22.Qc2 (22.Ba3 Qd8+-) 22...g6 (22...Bb5 23.Bh7 Kh8 24.Ne5+=) 23.d5 (23.Ba3!? Bd7 24.Qc7+-) 23...ed5 (23...Bb5 24.de6 Bd3 25.Qc3+=) 24.Qc3 (24.Bd4 Qd8 25.Qb2 Bd7+-) 24...f6 25.Nd4 Nb5 26.Nb5 (better 26.Qb3!? a6 27.Qd5 Bf7 28.Qd7+=) 26...Bb5-/+ 27.Bb5 Qb5 28.Qc7 Bd8 29.Qd6?? (better 29.Qc2-/+) 29...Qb2–+ 30.Qd5 Kh8 (30...Rf7!? 31.Rab1 Qe5 32.Qf3–+) 31.Rab1 Qe5 32.Qb7 Bb6 33.Rd1 Rab8 34.Qf3 a5 35.Rd5 Qe6 (35...Bc7 36.Rb8 Rb8 37.g3–+) 36.Rdb5 (36.Rdd1 Bc7–+) 36…Bc7 0–1. GuestVPPL – GuestLRCT, freechess.org, 2017.

5.a4 Bd7 6.Nf3 e6 7.d3 (7.Be2 a6=) 7...Bd6 8.Nbd2 0-0 9.Be2 Re8 10.0-0 e5 11.c4 dc4? (11...e4!? 12.Ne1 Be6=) 12.dc4 (better 12.Nc4!? a6 13.Nfe5+-) 12...Bf5 13.Nh4 Be4 (13...Bc8!?=) 14.Ne4+- Ne4 15.Bf3 Qh4 16.Qd5?? (better 16.g3 Qh6 17.Be4+-) 16...Nf6 (better 16...Nc5!? 17.a5 Nbd7 18.g3–+) 17.Qb7 Nbd7 18.Qa8 e4?? (18...Ra8!? 19.Ba8 Nb6 20.c5 Na8 21.cd6 cd6 22.Rac1–+) 19.Qe8 (better 19.g3!? Ra8 20.gh4 ef3 21.Rfd1-/+) 19...Ne8–+ 20.Be4?? (better 20.g3 Qe7 21.Be2–+) 20…Qh2 0–1. Abdullaevich (1875) – Monsieurmarsupi (1890), lichess.org, 2020.

5.a4 Nbd7 6.c4 dc4 7.Bc4 Nb6 8.Be2 g6 (8...a6 9.ba6 ba6 10.Nf3=) 9.Nf3 Bg7 10.0-0 0-0 11.d3 Bg4 12.Nbd2 Bf3 13.Bf3 Rb8 (13...Qd3 14.Bf6 Bf6 15.Ne4 Qd1 16.Nf6 ef6 17.Rfd1+=) 14.d4 Nfd5 15.a5 Nc8 16.Qb3 e6 17.Ne4 Nce7 18.Nc5 b6 19.ab6 ab6 20.Nd3 c5 (20...c6 21.Rfc1 cb5 22.Qb5+/-) 21.bc6 (21.dc5!? Bb2 22.Qb2 Ne3 23.fe3 Qd3+/-) 21...Nc6+/- 22.Rfc1 Na5 23.Qd1 b5 24.e4 (24.Ba3 Re8+/-) 24...Ne7+= 25.d5 ed5 26.Bg7 Kg7 27.ed5 Nc4 28.Nb4 Nf5? (28...Qd6 29.Nc6 Nc6 30.dc6 Qd1 31.Rd1+=) 29.h3?? (better 29.Nc6 Qf6 30.Nb8 Rb8 31.Be2+-) 29...Qf6= 30.Nc6 Rbd8?? (better 30...Ra8!?=) 31.Rab1 (31.Nd8 Rd8 32.Be2 Nb2+-) 31...Nb2 (31...Na3 32.Rb3 Ra8 33.Qd3+/-) 32.Qb3 Nc4 33.Qb5 (33.Qc3 Rc8 34.Rb5 Nfd6 35.Qf6 Kf6+-) 33...Ne5 (33...Nd2 34.Qd3 Nb1 A) worse 35.Qb1 Ra8=+; B) worse 35.Rb1 Qc6 36.Qf5 Qd6=+ (worse 36...gf5 37.dc6 Rd2 38.g3+=); C) 35.Nd8 Rd8 36.Rb1+/- (36.Qb1?! Nd4=)) 34.Be2 (34.Nd8!? Nf3 35.gf3 Rd8 36.Rc5+/-) 34...Nc6+/- 35.dc6 Nd4 36.Qc4 Rc8 37.Bf3 Nf3 38.gf3 Qf3 39.Rb7 White prepares the advance c7 (better 39.Qc3!? Qc3 40.Rc3+=) 39...Qh3= 40.c7 Qh6 41.Rb8? (better 41.Qd4 f6 42.Qe3=+) 41...Rb8 42.cb8Q Rb8 43.Rd1 Qg5 44.Kf1 Re8 45.Qd4 Kg8 46.Qd7 Re7 47.Qd8 Kg7 48.Qd4 Qe5 49.Qe5 Re5 50.Rd8 h5 51.Kg2 h4 52.Rd7 (52.f4 Rf5 53.Kf3 h3-+) 52...Rh5 53.Kh3 g5 54.f3 Kg6 55.Kg4 h3 56.Rd2 (56.Rd1 f5 57.Kg3 Kf6-+) 56...f5 (better 56...h2 57.Rd6 f6-+) 57.Kg3 h2! 58.Rh2 f4?? (58...Rh2 59.Kh2 Kf6-+) 59.Kg2?? (better 59.Kg4 Rh4 60.Rh4 gh4 61.Kh4=) 59...Rh2-+ 60.Kh2 Kf5 61.Kh3 Ke5 62.Kg4 Kf6 63.Kh5 Kf5 64.Kh6 g4 65.fg4 Kg4 (65...Kg4 66.Kh7 Kf5 67.Kg7 f3 68.Kf8 Ke6 69.Kg7 f2 70.Kg6 f1Q 71.Kg5 Qc1 72.Kg6 Qg1 73.Kh5 Kf5 74.Kh4 Qg4) 0-1. brucepeng (2030) - donaldrendape (2070), lichess.org, 2021.

5.a4 Nbd7 6.Nf3 e6 7.Na3 Bd6 8.c4 0-0 9.cd5 ed5 10.g4? (10.Be2 Nc5=) 10...Re8 (10...Ng4 11.Rg1 Nde5 12.Ne5 Ne5 13.Qh5-/+) 11.g5 Ne4 12.h4 Nb6 (12...c5 13.bc6 bc6 14.Qc2-/+) 13.Nc2 (13.a5 Nd7=+) 13...a5 (13...Nc4 14.Bd4 Bg4 15.Bh3 Bf3 16.Qf3 Ncd2 17.Qf5–+) 14.ba6 Ra6 (better 14...ba6 15.d3 Nc5-/+) 15.Ba6+- ba6 16.d3 Nc5 17.Rg1 (better 17.a5!? Nba4 18.Bg7 Kg7 19.Ra4 Na4 20.Qa1 Kg8 21.Qa4+=) 17...Bf5=+ 18.Ra3 Qd7 Increasing the pressure on the isolated pawn on a4 (18...Nca4 19.Ra2=+) 19.Ncd4 (19.a5 Nba4 20.Ba1=+) 19...Bg4 (19...Nca4 20.Rb3 Bg4 21.Ba1-/+) 20.Ne5 (20.a5 Nca4 A) worse 21.ab6 Bb4 22.Bc3 Nc3–+ (worse 22...Ba3 23.Qa1 Bd6 24.Rg4 Nc3 25.Rg1=+; worse 22...Bc3 23.Kf1 Bd4 24.Qa4 Qa4 25.Ra4 Bf3 26.Rd4 cb6 27.Rg3+-); B) 21.Rb3=) 20...Bd1-/+ 21.Nd7 Ncd7 22.Kd1 Ba3 23.Ba3 Ne5 (better 23...c5!? 24.a5 cd4 25.ab6 de3 (worse 25...Nb6 26.Bc5+=) 26.fe3 Nb6=+) 24.Ke2 Na4 25.Bb4 (better 25.Rc1!? c5 26.Bc5=) 25...c5 (25...Rb8!? 26.Bd2 Rb2-/+) 26.Ra1=+ Nb2 (better 26...a5!? 27.Ba5 Nb2=) 27.Bc5= Ned3 28.Bd6 Ra8 29.Ra5 Nc4 30.Rd5 Ndb2 31.Bb4 a5 32.Bc3 a4 33.Nc2 h6? (better 33...Rc8!?=) 34.gh6+- gh6 35.Rd4 (better 35.Rb5 a3 36.Rb4+-) 35...a3? (35...Rc8 36.Rg4 Kf8 37.Bg7 Ke7 38.Nb4= (38.Bh6? Ne5 39.Bg5 Ke8–+)) 36.Na3?? (better 36.Rg4 Kh7 37.Rg7 Kh8 38.Rf7 Kg8 39.Rg7 Kf8 40.Rb7+-) 36...Ra3= 37.Rd8?? (better 37.Rg4 Kh7 38.Rg7 Kh8 39.Bd4=) 37...Kh7–+ 38.Bd4 Kg6 39.Kf3 Nd2 40.Kg4 (better 40.Kg3 Nbc4 41.Kg4 f5 42.Kf4–+) 40...Nd3?? (better 40...f5 41.Kh3 Nd1–+) 41.h5 Kh7 42.Rh8 1–0. FeegLood (2705) – Workhorse (2420), lichess.org, 2015.

5.a4 e5 6.c4 d4 7.Nf3 Bg4 (7...de3 8.de3 Qd1 9.Kd1 Ne4=+) 8.Be2 (better 8.h3!? Bf3 9.Qf3=) 8...d3-/+ 9.Bf1 e4 10.h3 Bh5 (10...ef3 11.hg4 fg2 12.Bg2+-) 11.g4 Ng4! (11...ef3 12.gh5 Ne4 13.Qf3+-) 12.hg4 Bg4 13.Bg2 Qd7?? (13...Nd7 14.Nc3 Nc5 15.Ba3-/+) 14.Rh4?? (better 14.Ne5 Bd1 15.Nd7 Nd7 16.Kd1+-) 14...Be7–+ 15.Rg4 Qg4 16.Ne5 (16.Kf1 c6 17.Bd4–+) 16...Qg2 17.Nd3 ed3 (17...ed3 18.Qe2 de2 19.Ke2 Bh4–+) 0–1. RichardSommer (2025) – Mehdi_khan (2000), lichess.org, 2020.

5.a4 e6 6.c4 dc4 7.Bc4 Bd6 8.Nf3 0-0 9.0-0 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 c6 13.d4 cb5 14.Nb5 Bd7?? (better 14...Be7+=) 15.Nd6+- Bc6 16.Ba3 Qc7 (16...Bf3 17.gf3 Nd5 18.Nb7 Qg5 19.Kh1+-) 17.Ne5 Rd8 (17...Nbd7 18.Nef7 Nd5+-) 18.Ndf7 Re8 19.Nd6 Rd8 (19...Re7+-) 20.Be6 Kh8 21.Ndf7 Kg8 22.Nd8 Kh8 23.Nef7 Kg8 24.Ng5 (24.Ng5 Kh8 25.Bd6+-) 1–0. BeepBeepImAJeep (2620) – Chessikayules (1810), lichess.org, 2016.

5.a4 e6 6.c4 Bd6 7.Nf3 dc4 8.Be2 Nbd7 9.Bc4 Nb6 10.Be2 0-0 11.0-0 e5 (11...Nbd7 12.Qc2=) 12.d4 (better 12.Be5 Be6 13.d4+-) 12...Bg4?? (better 12...e4 13.Ne5 Nbd5=) 13.de5+- (13.Ne5?! Be2 14.Qe2 a6+-) 13...Bf3 14.Bf3 (14.ed6?! Be2 15.Qe2 Qd6+=; 14.ef6?! Be2 15.Qe2 g6+-) 14...Nc4 15.ed6 (15.ef6?! Nb2 16.Qd4 Qf6 17.Qf6 gf6 18.Bb7 Rad8+-) 15...Nb2 16.Qc2 Qd6 17.Qb2 Rad8 (17...c6 18.a5+-) 18.Nc3 c6 19.Ne4 Ne4 20.Be4 cb5 21.ab5 b6 (21...Qb6 22.Qa2+-) 22.Ra7 f5 (22...Rfe8 23.Bc6 Re7 24.Qa3 Ra7 25.Qa7+-) 23.Bc6 (23.Qg7) 23...Qg6 24.g3 f4 25.ef4 h5 (25...Rf4 26.Qe5 Rff8 27.Rb7+-) 26.Re1 h4 (26...Rf6 27.Re5 h4 28.Qa2 Kh8 29.Ra8+-) 27.Ree7 Rf7 (27...Rf6+-) 28.Rf7 Qf7 29.Rf7 Kf7 30.Kg2 Kg8 31.Qe5 hg3 32.hg3 (32.hg3 Kf8 33.Qe6 Rd7 34.Qd7 Kg8 35.Bd5 Kh7 36.Be4 Kh6 37.Qh3) 1–0. BeepBeepImAJeep (2650) – kadribudrika (2030), lichess.org, 2017.

5.a4 e6 6.g4 h5 (6...Nbd7 7.Nc3=+) 7.g5= Ne4 8.h4 a6 9.Be2 ab5 10.ab5 Ra1 11.Ba1 c6 12.Bh5 Qa5 13.Be5 (better 13.Nc3!?+=) 13...Nd7=+ 14.Bb2? (better 14.Bd4=+) 14...Qb5–+ 15.Ba1 (15.Bc3 Rh5! 16.Nf3–+) 15...Ndc5 (15...Rh5 16.Nc3 Nc3 17.Bc3–+) 16.Nf3?? (better 16.Bf3=+) 16...Rh5–+ 17.Ne5 Rh8 (17...g6 18.Ng4 Be7 19.f4–+) 18.h5 (18.g6 f6 19.Nf7 Rg8–+) 18...f6 (better 18...Ng5 19.d3–+) 19.Ng6 Rg8 20.gf6 Nf6 21.Nc3 Qa5 22.Ne2 Nce4 23.f3 (23.Bf6 Nf6 24.f4 Ng4–+) 23...Ng5 (23...Nd2 24.Bf6 Ne4 25.c3 Nf6 26.Nf8 Rf8 27.Qb1–+) 24.Nef4 (24.Bc3 Bb4 (24...Nf3?! 25.Kf2 Qd8 26.Kf3–+) 25.Bb4 Qb4–+) 24...Qc7 (better 24...Nf3 25.Qf3 Qa1 26.Qd1 Qd1 27.Kd1–+) 25.Be5 Bd6 26.d4 Nf7 27.Bd6 Qd6 28.Nd3 (28.Qa1 Nd7–+) 28...c5! 29.Kf2 (29.Nc5 Qg3 Combination; 29.dc5 Qg3 Combination) 29...cd4 30.ed4 b6 31.c3 Ba6 (31...Qc7 32.Qa4 Kd8 33.Nde5–+) 32.Nde5 (32.Qa4 b5 33.Qa5 Nd7–+) 32...Ne5 33.de5 Qd7?? (better 33...Qc5 34.Qd4 Nd7–+) 34.Qd4 (better 34.ef6!? gf6 35.Qd4=) 34...Kf7 (34...Nh5!? 35.Rh5 Qb5=+) 35.ef6= (35.ef6 gf6 36.Qb6=). FeegLood (2705) – rondep (2180), lichess.org, 2015.

5.c4 c6 6.cd5 cd5 7.Nf3 Bf5 8.Be2 e6 9.Nh4 Be4 10.0-0 Be7 (10...Nbd7 11.Nc3+=) 11.d3 Bg6 12.e4 (12.Nd2 Nbd7+=) 12...de4= 13.Ng6 hg6 14.de4 Qd1 (14...Nbd7 15.Nd2=) 15.Rd1+= (worse 15.Bd1 Nbd7=) 15...Nbd7 16.Nd2 Rd8 17.Rac1 Ne5?? (better 17...Nc5+=) 18.Be5+- Bb4 (18...0-0 19.Rc4+-) 19.Nf3 Ke7 (19...Ba5+-) 20.Rc7 Rd7 (20...Nd7+-) 21.Bf6 gf6 22.Rdd7 (22.Rdd7 Ke8 23.Rb7 Rh2 24.Nd4 Rh1 25.Kh1 a5 26.ba6 Be7 27.Re7 Kf8 28.Rf7 Ke8 29.Ne6 f5 30.Rfe7) 1-0. GuestZZWX – Hrekall, freechess.org, 2020.

5.c4 Nbd7 6.Nf3 e6 7.a4 Bd6 8.d4 c6 9.c5 Bc7 10.Bd3 0-0 11.0-0 Re8 12.Ne5 Ne5 13.de5 Nd7 14.f4 Nc5 15.Bc2 Nd7 16.Rf3 Nf8 17.Rh3 Bb6 18.Qh5 h6 19.Rg3 Kh8 20.Qf7 Re7 21.Qh5 Qe8 22.Qh4 c5 23.Nd2 d4 24.e4 c4 25.f5 d3 26.Kh1 ef5 27.Bd1 f4 28.Qf4 Ne6 29.Qh4 Rf7 30.Bh5 Qf8 31.Bf7 Qf7 32.Rf1 Qg8 33.Rg6 Bd7 34.Nc4 Rf8 35.Nd6 Rf1 0-1. thehumanlettuce (2015) - renr8360 (2170), Rated Blitz game, lichess.org.

5.c4 Bf5 6.Nc3 e6 7.cd5 Nd5 8.Nd5 Qd5 9.Be2 Qg2 (9...a6!?=) 10.Bf3+= Qg6 11.Qa4 Bd6?? (11...Nd7 12.Bb7 Bc2 13.Qd4+-) 12.b6?? (better 12.Bb7 Bc2 13.Qh4+-) 12...Nc6+= 13.bc7 (better 13.Bc6 bc6 14.Nf3= (worse 14.Qc6 Ke7 15.b7 Rab8–+)) 13...Bc7?? (better 13...Rc8 14.Rc1 A) 14...Bc7 15.Bc6 bc6 16.Qc6 Ke7 17.Qc5 Kd8 18.Nf3+- (18.Qa7?! e5 19.Ne2 f6+=); B) 14...Rc7 15.Bc6 B1) 15...Rc6 16.Rc6 bc6 17.Qc6 Ke7 18.Qb7 Kd8 19.Qa8 Kd7 20.Qa7 (20.Qh8?! Qg2 21.Qg7 Bg6=) 20...Kd8 21.Qa8 Kd7 22.Qb7 Kd8 23.Bc3+-; B2) 15...bc6 16.Rc6 0-0 17.Rc7 Bc7-/+) 14.Bc6+- bc6 15.Qc6 Ke7 16.0-0-0 (better 16.Qc7 Kf8 17.Rc1+-) 16...Rhc8–+ 17.Qb5 (17.Qa4 Bd3 18.Ne2 Be2–+) 17...Kf8 (17...Bd6 18.Bc3 Ba3 19.Qb2 Bb2 20.Kb2 Rc3 21.Kc3 Qg4 22.a3 Rc8 23.Kb3 Qc4 24.Kb2 Qc2 25.Ka1 Qd1 26.Kb2 Qb1) 18.Ba3 (18.Ne2 Bd3 19.Qd7 Be2 20.Bc3–+) 18...Kg8 19.Kb2 (19.d4 Qg2 20.Ne2 Rab8–+) 19...Rab8 20.Qb8 Rb8 21.Ka1 Qf6 (better 21...Qg4 22.Nf3 Qf3–+) 22.Bb2 (22.d4 e5 23.Nf3–+) 22...Bd6 (22...Qb2) 23.Bf6+- gf6 24.Rb1?? (better 24.d3+=) 24...Be5 (24...Rb1) 25.Rb2 (25.d4 Rb1) 25…Bb2 0–1. Agiant – Jgilomeno, lichess.org, 2019.

5.c4 Bf5 6.Nf3 e6 7.Nc3 Bb4 8.Nd4 Bg6 9.h4 h5 10.cd5 Nd5 11.Qb3 Bc3 12.dc3 0-0 13.c4 Nf6 14.Be2 Ne4 15.Rh3 Nd7 16.Ba3 Ndc5 17.Qc3 b6 18.Nc6 Qf6 19.Bb2 Qf2 20.Kd1 Nf6 21.Rf3 Qg2 22.Rf5 Bf5 23.Ne5 Rad8 24.Kc1 Qe2 0-1. alanme1 (2155) - pepidda (2265), Rated Bullet tournament, lichess.org.

5.Be2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 e6 9.Qc1 Be7 10.Qb2 0-0 11.h4 (11.Nf3 Bd6=) 11...Nbd7 12.h5 h6 13.Nf3 Bd6 14.g4 e5 15.g5 hg5 16.Ng5 Nb6 17.Rg1 (17.h6!?+=) 17...Ng4+= 18.Nf3 (18.Bg4? Qg5 19.h6 Bg4 20.hg7 Ra8–+ (20...Qg7?! 21.f3 f5 22.fg4-/+; 20...Kg7?! 21.Qb3–+)) 18...Qf6 19.d3 Bd7 20.Nc3 Ra8 21.Nd1 Qh6 22.Nd2 Qh5 23.Nf1 Ra4 24.Ng3 Qh3 25.c3 (25.Rh1 Qg2 26.Bf1 Qf3-/+) 25...e4 26.Bf1 Qh4 27.Qb1? (27.de4 Nf2! 28.Nf2 Bg3 29.Rg2–+) 27...Nf2! (27...Nf2 28.Kf2 Qh2 29.Ke1 Bg3 30.Rg3 Qg3 31.Kd2 Bg4–+) 0–1. Wilshusen,Horst (2110) – Wolkenstein,Eckhardt (2175), BdF, 2007.

5.Be2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.f4 e6 10.Nf3 Bc5 11.0-0 0-0 12.c4 dc4 13.Bc4 Nb6 14.Qc2 Nc4 15.Qc4 Qd5 16.Rc1 Bd6 17.Bf6 Qc4 18.Rc4 gf6 19.Nc3 f5 (19...f5 20.e4 fe4 21.Ne4 Kg7+/-). pcmvr – Klaus Behrmann, ChessWorld.net, 2003.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 Bg4 10.Be2 (10.Bf6 ef6 11.Nc3 dc4 12.Bc4 Bd6=) 10...e6 (10...dc4 11.Bc4 e6 12.h3=) 11.h3 (11.Qa4 dc4 12.Qc4 Bf5=) 11...Bf3 12.gf3 (12.Bf3 dc4 13.bc6 Nc6 14.Bf6 Qf6=) 12...Be7 (12...Bd6 13.bc6 bc6 14.d4=) 13.Rg1 (better 13.bc6 bc6 14.Nc3=+) 13...cb5 (better 13...0-0!?=+) 14.cd5+= Nd5 (14...Qd5 15.Rg7 Nc6 16.Qc2+=) 15.Bb5+- Nd7 16.Qa4 (16.Rg7 Bf6 17.Bd7 Qd7 18.Bf6 Nf6+-) 16...N5b6 (16...Bf8 17.Bd4+=) 17.Qe4+- Bf6 18.Bf6 Qf6 19.Qb7 0-0?? (better 19...Ke7+-) 20.Bd7+- Nd7 21.Qd7 Qf3 22.Qd4 g6 23.Nc3 (23.Qg4 Qc6+-) 23...Ra8 (23...Qh3 24.Ne4 Rc8 25.Nf6 Kf8 26.Ke2+-) 24.Ne4 Qh3 (24...h6 25.Nf6 Kg7 26.Ne8 Kf8 27.Nc7+-) 25.Nf6 Kf8 26.Nd5! ed5 (26...ed5 27.Qh8 Double attack (27.Qc5 Decoy)) 27.Qh8 Ke7 28.Qa8 Qf5 29.Ke2 (29.Qa7 Kf6 30.Qb6 Kg7+-) 29...d4 (29...Qh5 30.Kd3+-) 30.Qb7 Kf8 (30...Qd7 31.Qd7 Kd7 32.e4+-) 31.Qb4 Qc5 (31...Ke8 32.Qd4 Qh5 33.Ke1 h6+-) 32.Qc5 (32.Qc5 Kg7 33.Qd4 Kf8 34.Rc1 h5 35.Rc7 Kg8 36.Rc8 Kh7 37.Rh8) 1–0. Anonymous – Anonymous, lichess.org, 2020.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 e6 9.c4 c6 10.Be2 Ne4 (10...dc4 11.Bc4 cb5 12.Bb5 Bd7 13.Bf6 Qf6 14.Qa4+=) 11.0-0 Bc5 (11...dc4 12.bc6 Nc6 13.Bc4+=) 12.d3 (12.Bg7 Rg8 13.Be5 Nd7+-) 12...Nf6 13.d4 (13.Be5 Bd6+=) 13...Bd6 (13...Be7 14.c5+=) 14.c5+- Be7 15.Qa4 0-0 16.Qa8 Bd7 (16...Nfd7 17.Bc3 cb5 18.Ba5+-) 17.Qb7 cb5 1–0. DEFFM – GuestZZTW, freechess.org, 2017.

5.Nf3 a6 6.ba6 ba6 7.c4 Nc6 8.cd5 Qd5 9.Nc3 Qd6 10.Be2 e5 11.0-0 Be7 12.Qc2 0-0 13.Rfd1 e4 (better is 13...Rb8!?=) 14.Ne4+/- Ne4 15.Qe4 Qh6? (better is 15...Rb8 16.Rdb1 Rb6+/-) 16.Rac1+- Bb7 17.Qc2?? (better is 17.Rc6 Qc6 18.Qe7+-) 17...Qf6?? (17...Nb4 18.Qb1 Bd5+-) 18.Bf6+- Bf6 19.d4 1–0. Fournier,Frederic (1790) – GMjuancarlos07 (1770), Active, 2004.

5.Nf3 b6 6.c4 Be6 (6...dc4 7.Na3+-) 7.cd5 (7.Nd4 Bg4 8.f3 Bh5+-) 7...Nd5 (7...Bd5 8.Nc3 Bb7 9.d4+-) 8.Be2 (8.Nd4 Bc8 9.Qf3 e6+-) 8...Nb4 (8...c6!?+-) 9.0-0 Nd3 (9...Nd7 10.Nc3 Nf6 11.Qa4+-) 10.Bd4 Bc4?? (10...Nc5+-) 11.Bd3 (better 11.Qc2 Bb5 12.Na3+-) 11...Bd3+= 12.Re1 Bb5 13.Qb3 (13.Ne5!? Nd7 14.Nf7 Kf7 15.Qh5 g6 16.Qb5+=) 13...Bc6 14.Ne5 (14.e4 Bd7+=) 14...Bd5 (14...Qd5 15.Qd5 Bd5 16.Nc3-/+) 15.Qb5 (15.Qa4 c6=) 15...c6=+ 16.Qa4 b5 17.Qc2 Qd6 (better 17...f6 18.Nf3 Bf3 19.gf3 Qd5-/+) 18.Nc3+= c5?? (18...f6 19.Nd3 Bc4=) 19.Nb5+- Qe6 (19...Qb6 20.Rab1 e6+-) 20.Nc7 Kd8 21.Ne6 fe6 1–0. GuestMJCY – GuestZMQQ, freechess.org, 2019.

5.Nf3 c5 6.c4 Bg4 7.Be2 e6 8.0-0 Be7 9.d3 Nbd7 10.Nbd2 0-0 11.a4 a5 12.h3 Bf3 13.Bf3 b6 14.Qc2 Qc7 15.g3 Rad8 16.Rfe1 Ne5 17.Be5 Qe5 18.Rad1 Qc7 19.Bg2 Bd6 20.f4 h5 (20...d4 21.ed4 cd4 22.Re2=) 21.Nf3 Rfe8 22.e4 (22.cd5 Nd5 23.Qc4 Ne7+=) 22...de4= 23.de4 e5 24.f5 Be7 25.Qe2 g6 (25...Bd6 26.Qe3=) 26.fg6 fg6 27.Ng5 Qc8 28.Qe3 Rd4 29.Nf3 Re4 30.Qh6 Re1 (30...Qf5 31.Rf1 Bf8+- (31...Rc4?? 32.Ng5 Qg5 33.Qg5+-)) 31.Re1+- (worse is 31.Ne1 Qf5+=) 31...Qf5 32.Re5 (worse is 32.Ne5 Bf8 33.Qf4 Bd6 34.Qf5 gf5-/+) 32...Qb1 33.Re1 Qf5 (33...Bf8 34.Qf8!! Kf8 35.Rb1 Ne4+-) 34.Nh4 (better is 34.Ng5 Qg5 35.Qg5+-) 34...Qd3 35.Qg6 (better is 35.Ng6 Qg3 36.Re3 Qe3 37.Qe3+-) 35...Qg6+/- 36.Ng6 Kf7? (better is 36...Bd6 37.Re8 Ne8+/-) 37.Bc6+- (37.Re7?! Re7 38.Ne7 Ke7+-; 37.Ne7?! Re7 38.Re7 Ke7+-) 37...Rg8 (37...Bd6 38.Be8 Ne8 39.Nh8 Kf8 40.Kf2+-) 38.Ne7 (38.Re7?! Kg6 39.Rb7 Kf5+-) 38...Rg3 39.Kh2 Ra3 40.Nd5 Nd5 41.Bd5 Kf8 42.Re6 Ra4 43.Rb6 h4 44.Ra6 Ra2 45.Kg1 Ke7 (45...Ra1 46.Kf2 Ra2 47.Kf3+-) 46.b6 Kd8 (46...Ra1 47.Kf2 Ra2 48.Kf3 Ra3 49.Kg4+-) 47.b7 Ra1 48.Kg2 Kc7 49.Ra8 Ra2 1–0. Valles Calvo,Luciano – Martinez Huerta,Faustino, Asturias Preferente–chT, 1997. (=1.Nf3 d5 2.b4 Nf6 3.Bb2 Nc6 4.b5 Nb8 5.e3 c5)

5.Nf3 c6 6.a4 Nbd7 7.Be2 e5 (7...e6 8.c4+=) 8.Ne5 a6 (8...Ne5 9.Be5 Bd6 10.Bd4+=) 9.f4 (9.bc6!? bc6 10.Nc6+-) 9...ab5 10.ab5 Ra1 11.Ba1 cb5 (11...Qc7 12.0-0+-) 12.Bb5+- Bd6 13.0-0 Ne4? (better 13...0-0 14.Nd7 Nd7+-) 14.Qg4 Be5 15.Be5 (15.fe5?! 0-0 16.e6 Ndf6 17.Bf6 Nf6 18.ef7 Rf7+-) 15...f6 (15...Rg8+-) 16.Qg7 Rf8 17.Bd4 b6 (17...Qe7 18.Qg4+-) 18.Qh7 Rf7 (18...Qe7 19.Qf5 Bb7 20.Nc3+-) 19.Qg8 Rf8 (19...Ke7 20.Qd8 Kd8 21.Bc6+-) 20.Qd5 f5 (20...Nec5 21.Bc5 bc5 22.Nc3+-) 21.Nc3 Qf6 (21...Qe7 22.Ra1 Qd6+-) 22.Bf6 (22.Bf6 Nef6 23.Qe6 Kd8 24.Ra1 Bb7 25.Ra7 Kc8 26.Bd7 Kc7 27.Nb5 Kd8 28.Rb7 Nd7 29.Qd7) 1–0. DEFFM – GuestGLSV, freechess.org, 2019.

5.Nf3 c6 6.a4 Bg4 7.Be2 Nbd7 8.0-0 Nc5 (8...e6 9.d3=) 9.d3 e6 10.h3 Bf3 11.Bf3 Bd6 12.Nd2 Qc7 (12...0-0 13.e4 Bf4 14.Ba3=) 13.c4 (13.Bf6 gf6 14.d4 Nd7+=) 13...dc4?? (better 13...Nd3 14.Bf6 gf6=+) 14.Nc4+- (worse 14.dc4 e5=) 14...Bh2 15.Kh1 Bd6? (15...Rd8!? 16.Bd4 Nd3 17.bc6 bc6 18.Qd3 c5+-) 16.Rc1 (16.Nd6 Qd6 17.Ba3 Qd3 18.Bc5 Qd1 19.Rfd1 Nd5+-) 16...0-0? (16...cb5 17.Nd6 Qd6 18.Ba3 Qd3 A) 19.Rc5?! Qa3 20.Qc2 ba4= (20...Qa4?? 21.Rc8 Rc8 22.Qc8 Ke7 23.Qh8+-); B) 19.Bc5 Qd1 20.Rfd1+- (20.Rcd1?! Rc8 21.Bd6 ba4+-; 20.Bd1?! b6 21.Bd4 ba4+-)) 17.bc6 (17.Nd6 Qd6 18.Ba3 Qd3 19.Bc5 Qd1 20.Rfd1 Rfc8+-) 17...bc6 (17...b6 18.Bf6 gf6 19.d4+-) 18.d4 (better 18.Nd6 Qd6 19.Ba3 Qd3 20.Bc5 (20.Rc5?! Qa3 21.Rc6 Rab8=) 20...Qd1 21.Rfd1+-) 18...Nce4 19.Qc2 Bg3?? (better 19...Ng5 20.Be2 Be7+-) 20.Be4 (20.fg3?! Ng3 21.Kg1 Nf1 22.Rf1 Nd5+-) 20...Ne4 21.Qe4 (21.fg3?! Ng3 22.Kg1 Nf1 23.Rf1 Qg3+-) 21...Bd6 22.Nd6 Qd6 23.Qc6 (23.Qc6 Qb4 24.Rc2+-) 1–0. avz81 (1670) – yaraaaa_1996 (1615), lichess.org, 2018.

5.Nf3 c6 6.Bd3 Bg4 7.0-0 c5 (7...e6 8.Nc3=) 8.c4 (8.h3 Bh5=) 8...e6= 9.cd5 (9.h3 Bh5=) 9...ed5 10.Re1 (10.Nc3=) 10...Bd6 (10...Be7!?=) 11.e4+/- de4 (11...Be7 12.Bf6 Bf6 13.ed5 Kf8 14.Nc3+/-) 12.Be4 Ne4 13.Re4 Be7?? (better is 13...Be6 14.Bg7 Rg8+/-) 14.Rg4+- 0-0 (14...Bf6 15.Re4 Kf8 16.Bf6 Qf6+-) 15.Rg7 (15.Rg7 Kh8 16.Qc2 f5 17.Re7 Rf6 18.Bf6 Kg8 19.Qc4 Qd5 20.Qd5 Kf8 21.Qf7#) 1–0. b4_player – opponent, gamecolony.com, 2008.

5.Nf3 c6 6.Be2 cb5 7.Bb5 Bd7=.

5.Nf3 Qd6 6.a4 g6 (6...Bg4 7.Be2=) 7.c4+= Ne4?? (better is 7...Bg7+=) 8.Bh8+- f6 9.Nc3 (9.a5 Kf7 10.c5 Nc5+-) 9...Kf7 10.Nd5 e6 (10...Kg8 11.Qc2 Nc5+-) 11.Nf6! Nf6 12.Ng5 Ke7 (12...Kg8 13.Bf6 c5 14.h4+-) 13.Bf6 Ke8 14.Nh7 Bg7 (14...e5 15.d4 Qb4 16.Qd2 Qd2 17.Kd2 ed4 18.Bd4 Bb4 19.Bc3 Bc3 20.Kc3+-) 15.Bg7 (better is 15.Qc2!? Bf6 16.Qg6 Ke7 17.Qf6 Kd7 18.Qg7 Ke8 19.Nf6 Kd8 20.Qg8 Ke7 21.Qe8 Kf6 22.Qc8 b6+-) 15...Kf7 (15...Qe7 16.Be5 Qh7 17.Qg4+-) 16.Bc3 (16.Bc3 Nd7 17.Qf3 Ke8 18.Nf6 Kd8 19.Nd7 Kd7 20.Qf7 Qe7 21.Qg6+-) 1–0. forsetinn (1735) – gingerphoenix, gameknot.com, 2013.

5.Nf3 Qd6 6.Be2 Qb4 7.Be5+= Qg4 (7...Qa5 8.0-0+=) 8.Nc3 (8.0-0 c5+-) 8...Qg2+= 9.Rg1 Qh3 10.Bf6 (10.Bc7 Rg8+=) 10...ef6 11.Nd5 Qd7 12.c4 Bd6? (better 12...Qd6+=) 13.Rg7+- c6?? (better 13...Kf8 14.Rg1 c6 15.bc6 bc6+-) 14.Nf6 (14.Nf6 Kf8 15.Nd7 Kg7 16.Nb8 cb5 17.Qb1 Bb8 18.Qb5+-) 1–0. Janek – bitsky, internet, 2017.

5.Nf3 Qd7 6.c4 dc4 7.Bc4 b6? 8.Bf7! Kd8 (8...Kf7 9.Ne5 Double attack) 9.Ne5 Qb5 (9...Qf5 10.Bb3 Ke8+-) 10.Qb3 (better 10.Bb3 Be6 11.Be6 Qb2 12.Nc3+-) 10...Qb3 11.Bb3 Bb7?? (better 11...Ke8+-) 12.Nf7 Ke8 13.Nh8 Bg2 14.Rg1 Bd5 (14...Bb7 15.Nf7+-) 15.Bf6 Bb3 16.ab3 (better 16.Bg7!? Bc4+-) 16...ef6 17.Nc3 c6 18.Rb1 (18.Ra4!? a5+-) 18...Nd7 (18...g5 19.h4! Bg7 20.hg5 Bh8 21.gf6 Bf6 22.Rh1+-) 19.d4 (19.Rg3 g5 20.Ne4 g4+-) 19...Bb4 (19...g5 20.d5 Bb4 21.dc6 Bc3 22.Ke2+-) 20.Rc1 (20.Rg7 Bc3 21.Ke2 c5+-) 20...Kf8 (20...g5 21.Rg4 Kf8 22.Ke2+-) 21.Ke2 Kg8 22.Ng6! hg6 23.Rg6 (23.Na2 Bd6 24.Rc6 Bh2+-) 23...Kh7 (23...Kf7 24.Rgg1+-) 24.Rcg1 Rg8 (24...Bf8 25.Ne4+-) 25.Ne4 (25.d5 Ne5 26.R6g3 g5+-) 25...f5 26.Nd2 (26.Nd6 Bd6 27.Rd6 Nb8+-) 26...c5 (26...Bd2 27.Kd2 Nf6 28.f3+-) 27.dc5 (better 27.Nf3!? Nf6+-) 27...Nc5 28.Nc4 Nb3 (better 28...Bc3+-) 29.Ne5 Bc3 30.f4?? (better 30.R6g5 g6 31.Ng6+- (31.Rg6?! Rg6 32.Ng6 a5+-)) 30...Be5+- 31.fe5 a5?? (better 31...Nc1 32.Kd2 Nb3 33.Ke1 Nc5+-) 32.e6+- (32.Rb6?! a4+-) 32...a4 (32...Nc5 33.e7 Ne6 34.Re6+-) 33.e7 f4 (33...Nc5+-) 34.Rb6 (better 34.R1g4 f3 35.Kf3+-) 34...f3 (34...Re8 35.Rb7+- (35.ef4?! Re7 36.Kd3 Ra7+-)) 35.Kf3 Nd2 (35...Re8 36.Rg4 Re7 37.Ra4 Nd2 38.Ke2 Ne4+-) 36.Ke2 Nc4 (36...Re8 37.Kd2 Re7 38.Ra6+-) 37.Ra6 (better 37.Rbg6 Nd6 38.Rd6+-) 37...Nb2 (37...Re8 38.Rc6 Na5+-) 38.Rg3 (38.Rg3 Re8 39.Rg4 Re7 40.Rh4 Kg8 41.Rb4+-) 1–0. OnlyPolishOpening (2020) – abuasr (1895), lichess.org, 2020.

5.Nf3 Bd7 6.a4 e6 7.Be2 c6 (7...a6 8.0-0=) 8.c4 (8.0-0 a6+=) 8...Be7 (8...dc4 9.Bc4 a6 10.ba6 Na6 11.0-0=) 9.Qc2 (9.cd5 ed5 10.0-0 0-0=) 9...0-0 (9...dc4 10.Qc4 cb5 11.ab5=) 10.0-0 Qc7 (10...dc4 11.Bc4 Bd6 12.e4 cb5 13.ab5+=) 11.Ng5 (better 11.Be5 Bd6 12.Bd6 Qd6 13.c5+-) 11...h6?? (better 11...g6 12.Ba3 c5+=) 12.Bf6+- hg5 13.Be7 Re8 14.bc6 Bc6 (14...Nc6 15.cd5 (15.Bg5?! Qe5+-) 15...ed5 16.Ba3+- (16.Bg5?! Qe5+-)) 15.Ba3 (15.Bg5?! Qe5 16.Nc3 Qg5 17.cd5 ed5+-) 15...Qd7 (15...dc4 16.Qc4 Nd7 17.Rc1+-) 16.Nc3 e5 (16...dc4 17.Bc4 Rc8 18.d3+-) 17.cd5 Bd5 18.Nd5 Qd5 19.Rab1 e4 (19...Nc6 20.Qf5 (worse 20.Rb7 Nd4 21.ed4 Qb7+-) 20...Rab8 21.Rfd1+-) 20.Bc4 (better 20.f3 Qd7 21.fe4+-) 20...Qa5 (20...Qd7 21.f3 Nc6 22.fe4+-) 21.Qb3 (21.Rb7 Qf5 22.Bf7 Qf7 23.Rf7 Kf7 24.Qc7 Kg6+-) 21...Nc6 (21...Qc7 22.Qb7 Qc4 23.Qa8 Qc6+-) 22.Bf7 Kh8 23.Qd1 g4 (23...Qf5 24.Be8 g4 25.Bc6 bc6+-) 24.Qg4 (24.Qg4 g6 25.Bb2 Qe5 26.Qg6 Re6 27.Be6 Qb2 28.Qh6) 1–0. DEFFM – GuestRJQN, freechess.org, 2018.

5.Nf3 Bd7 6.c4 dc4 7.Bc4 e6 8.0-0 Be7 9.Nc3 0-0 10.a4 a6 11.Qc2 ab5 12.ab5 Ra1 13.Ra1 Bd6 (13...c6 14.d3+=) 14.Ra8 (14.Ne4 Ne4 15.Qe4 Bc8+-) 14...Qe7 15.Kf1 (15.Ra7 Bc8+-) 15...c6+= 16.h3 cb5 17.Nb5 Nc6? (better 17...Bb5!? 18.Bb5 Nd5+=) 18.Rf8+- (18.Nd6 Ra8 19.Ng5 Qd6 20.Bf6 g6=+) 18...Kf8?? (18...Qf8 19.Qd3 (19.Nd6?! Qd6 20.Bf6 gf6+=) 19...Nd5 20.Nd6 Qd6 21.e4+-) 19.Nd6 (better 19.Bf6 Qf6 20.Nd6+-) 19...Qd6+- 20.Bf6 gf6 21.Qh7 Nb4 (21...Ne5 22.Ne5 fe5 23.Qh8 Ke7 24.Qh4 Ke8 25.d4=) 22.Qh8 Ke7 23.Qh4 Bc6 24.Nd4 e5?? (better 24...Qc5 25.Kg1 Qg5 26.Nc6 Nc6+-) 25.Nf5+- (25.Nf5 Kd7 26.Nd6 Kd6 27.Qf6 Kc5 28.d3+-) 1–0. aravind555 (1810) – Zero19272 (1810), lichess.org, 2020.

5.Nf3 Bd7 6.Bd3 e6 7.Ne5 Bd6 8.0-0 0-0 (8...Be5 9.Be5 a6 10.a4+=) 9.f4 Ne4 (9...a6 10.a4=) 10.Qg4 (10.Be4 de4 11.Nc3 f6 12.Nd7 Qd7=) 10...f6 (10...f5 11.Qf3=) 11.Nd7 Qd7 12.f5 e5 (12...ef5!? 13.Qf5 Qf5 14.Rf5 c6=) 13.Be4+- de4 14.Nc3 (14.Qe4?! Qb5 15.Bc1 a6=) 14...Bc5? (14...a6 15.a4 Bb4 16.Qe4 Bc3 17.Qc4 Kh8 18.Bc3 ab5 19.ab5 Ra1 20.Ra1 Qf5 21.Qc7 Qc2+-) 15.Qe4+- (15.Ne4?! Qb5 16.Rab1 Qc6+=) 15...Qd2 (15...Qf7 16.Qb7 Nd7 17.Qc7+-) 16.Rfe1 (16.Rf3 Be3 17.Re3 Qd4+-) 16...Qd6 (16...Be3 17.Re3 Qd4 18.Ba3 Qe4 19.Ne4+-) 17.Qb7 Nd7 (17...Na6 18.Qa6 (18.ba6?! Rab8 19.Qe4 Rb4+-) 18...Qa6 19.ba6+-) 18.Rad1 Qe7 (18...Qb6 19.Qd5 Kh8 20.Qd7 Be3 21.Kh1+-) 19.Qd5 Rf7 (19...Qf7 20.Qd7 Bd6 21.Qf7 Kf7+-) 20.Qa8 Nf8 (20...Qf8 21.Qc6 Nb6 22.Ne4+-) 21.Nd5 (21.Nd5 Qd6 22.Rd3+-) 1–0. DEFFM – eduarth, freechess.org, 2018.

5.Nf3 g6 6.c4 Bg7 7.Be2 Bg4 8.a4 (8.cd5 Qd5 9.Nc3 Qe6+=) 8...Bf3 (8...a6 9.h3 Be6 10.Nd4=) 9.Bf3+= c6 10.cd5 cd5 11.0-0 Nbd7 (better is 11...0-0!?+=) 12.Bd5!+/- Nd5 13.Bg7 Rg8 14.Bb2 Rc8 15.Nc3 N7b6 16.Nd5 Qd5 17.Rc1 (17.Bd4!?+-) 17...Rc1+/- 18.Qc1 Na4? (18...f6 19.e4! Qd3 20.e5+/-) 19.Qc8+= Qd8 20.Qb7 Nb2?! (20...Qd7 21.Qa8 Qd8 22.Qc6 Kf8+-) 21.Rc1 Na4 (21...f5 22.Rc8 Kf7 23.Rd8 Rd8+-) 22.Rc8 (22.Rc8 e5 23.Rd8 Kd8 24.Qb8 Ke7 25.Qg8+-) 1–0. algernon (2330) – gbsrao (2285), net–chess.com, 2013.

5.Nf3 h5 6.c4 (6.Be2 Bg4+=) 6...c6 (6...Bf5 7.Bf6 ef6 8.Nc3+=) 7.Nc3 dc4 (7...a6 8.bc6 Nc6 9.Rc1+=) 8.Bc4 Bf5 (8...a6 9.a4+=) 9.d3 (9.bc6 bc6 10.Qb3 e6+-) 9...a6 (9...e6 10.0-0+=) 10.a4 (10.e4 Bg4 11.Ne5 e6+=) 10...ab5 (10...e6 11.0-0+=) 11.ab5 Ra1 12.Ba1 Qa5 (12...e6 13.0-0+=) 13.0-0+- Ng4? (13...e6 14.Nd4 Bg6 15.bc6 Nc6 16.Ncb5+-) 14.e4 (14.Qb3 f6+-) 14...Bh7? (better 14...Bd7+-) 15.Qb3+- e5 (15...Kd8 16.Ng5 Ne5 17.Bf7+- (17.Nf7?! Nf7 18.Bf7 Qc7+-; 17.Nh7?! Rh7 18.Bf7 Nbd7+-)) 16.Bf7 (16.bc6 Bd6 17.Bf7 Kf8+-) 16...Kd8 17.Qe6 (better 17.h3 Nf6 18.Ne5+-) 17...cb5?? (17...Bc5 18.Bb2 Qb4+-) 18.Qe8 Kc7 19.Nd5 Kd6 20.Qe6 Kc5 21.d4 (21.Rc1 Qc3 22.Rc3) 21...Kc4 (21...ed4 22.Bd4 Kc4 23.Nf4 Kb4 24.Qb3) 22.Rc1 (22.Nf4 Kb4 23.Qb3) 22...Kd3 23.Nc3 (23.Nf4 Ke4 24.Ng5 Kf4 25.g3 Kg5 26.h4) 23...Be4 (23...Qa2 24.Rd1 Qd2 25.Rd2) 24.Rd1 Kc2 25.Qb3 1–0. DEFFM – jabarinashville, freechess.org, 2016.

5.Nf3 h6 6.c4 dc4 7.Bc4 Nbd7 8.Qb3 e6 9.Be6?? (9.0-0+=) 9...Qe7?? (better 9...fe6 10.Qe6 Be7–+) 10.Bc4+- Nc5 11.Qc2 Be6 12.0-0 Bc4 13.Qc4 0-0-0 (13...Qe6 14.Rc1+-) 14.Bd4 Ne6 (14...Qe6 15.Qc2 Qe4 16.Qe4 Nce4 17.Ne5+-) 15.Ba7 b6? (better 15...Qb4 16.Rc1 Qc4 17.Rc4 Bd6+-) 16.Bb6 Qd6 (16...Qb4 17.Rc1 Qc4 18.Rc4+-) 17.Bd4 Nd4 (17...Qd5 18.Qa4 Nd4 19.Nd4+- (19.Qd4?! Qb5 20.Qc3 Bb4+-)) 18.Nd4 Ng4 19.f4 f6 (19...Qb4 20.Qd3 g6+-) 20.h3 Ne3 21.de3 g5 22.Nc6 (22.Nc3 Re8+-) 22...Rd7 (22...Re8 23.Qc3 gf4 24.Rf4 Rg8+-) 23.Qa4 (23.Qa4 Re7 24.Ne7 Be7 25.Qa8 Kd7 26.Qh8+-) 1–0. GuestYTZJ – Ronnylswe, freechess.org, 2018.

5.f4 e6 6.Nf3 =.

5.f4 Bf5 6.Nf3 c5 (6...e6 7.Nc3=) 7.a4 e6 (7...Nbd7 8.Be2=) 8.Be2 Bd6 (8...Bg4 9.h3 Bf5 10.0-0=) 9.Nh4 (9.0-0 a6=) 9...Be4 (9...0-0 10.Nf5 ef5 11.0-0+=) 10.d3+= Bg6 11.0-0 a6 (11...d4 12.ed4 Nd5 13.Qe1=) 12.Na3 (12.e4 de4 13.Ng6 hg6 (worse is 13...fg6 14.de4 Be7 15.Qd8 Bd8 16.Nd2+/-) 14.ba6 Na6 15.de4 c4=) 12...ab5 (12...Nbd7 13.ba6 ba6 14.Ng6 hg6 15.Rb1=) 13.Nb5 Nc6 (13...Be7 14.Ng6 hg6 15.Be5+=) 14.e4+/- de4 15.Bf6 (15.Nd6?! Qd6 16.Ng6 hg6 17.de4 Ne4=) 15...gf6 16.de4 (worse is 16.Nd6 Qd6 17.Ng6 Qd4 18.Kh1 hg6 19.de4 Ra4=) 16...Nd4 (16...Ke7 17.f5+-) 17.c3 (17.Nd4 cd4 18.Bb5 Kf8 19.Qd4 Kg7 20.Ng6 fg6+-) 17...Ne2 18.Qe2 0-0? (better is 18...c4 19.f5 Bc5 20.Kh1 Qd3 21.Qd3 cd3 22.Nc7 Ke7 23.Na8 Ra8 24.fg6 fg6+-) 19.Rad1 (19.Rfd1 Ra6 20.Ng6 fg6+-) 19...Ra6 20.e5 (worse is 20.Rd6 Rd6 21.Nd6 Qd6+-) 20...fe5 21.Ng6 (21.Nd6?! Rd6 22.Rd6 Qd6 23.fe5 Qd3+=) 21...fg6 22.fe5 (22.Nd6?! Rd6 23.Rd6 Qd6=) 22...Qb6 (22...Rf1 23.Qf1 Ra4 24.Nd6 Qd7+-) 23.Rd6 Qa5 (23...Qd8 24.Rd8 Rd8+-) 24.Rf8 Kf8 Plans Rxd6 25.Qf3 Ke8 26.Qb7 Rd6 (26...Qb5 27.Qb5 Kf8 28.Qa6 Kg7 29.Qa7 Kh6 30.Qc5 Kh5 31.a5 g5 32.Qc4 Kg6 33.Qe6 Kg7 34.Rd7 Kf8 35.Qf7) 27.Nd6 Kd8 28.Qc8 Ke7 29.Qe8 1–0. pcmvr (2110) – kkoushik (2155), net–chess.com, 2006.

5.h3 e6 6.g4 Bd7 7.g5 Ne4 8.h4 Bd6 (8...c6 9.a4=+) 9.Ne2 (better 9.d3 Nc5 10.Bg7+-) 9...0-0=+ 10.a4 f5 11.Nbc3 Be5 (11...Be8 12.Nf4 Qe7 13.Qf3=+) 12.Ne4 (12.Ba3!? Re8 13.d4=) 12...Bb2-/+ 13.Nc5 (better 13.Rb1!? fe4 14.Rb2=+) 13...Ba1–+ 14.Qa1 b6 15.Nd3 c5 16.Ndf4 (better 16.Qe5 a6 17.Nef4–+) 16...Qe7?? (better 16...a6!? 17.Qe5 ab5 18.ab5 Bb5 19.Qe6 Kh8–+) 17.Rg1 (17.Qe5 Qf7 18.Bg2 a6 19.Nd5 A) 19...ed5? 20.Bd5 ab5 A1) 21.Ba8 Nc6 (21...ba4?? 22.Bd5+-) 22.Bc6 Bc6=+; A2) 21.Bf7 Rf7 22.h5+-; B) 19...ab5 20.Nb6 Ra7=+) 17...e5 18.Nd5 Qe6?? (better 18...Qd6 19.Nec3 Be6-/+) 19.Nc7+- Qc4 Black intends f4 20.Na8 Qc2 21.Nc7 f4 22.Nc3 Bf5 23.Qa2 Qa2 24.Na2 Nd7 25.Nd5 f3 (25...fe3 26.de3 Kh8 27.Nac3+-) 26.Ne7 Kh8 27.Nf5 Rf5 28.Bd3 Rf7 (28...Rf8 29.Rg3+-) 29.g6 (better 29.Bh7!? Rf8 30.Bg6 Kg8+-) 29...hg6 30.Rg6 Rf6 31.Rf6 Nf6 32.e4 (better 32.Nc3!? Kg8+-) 32...Ng4 (32...Kh7 33.Bc2 Kh6 34.Nc1+-) 33.Nc3 Kh7 34.Nd5 Kh6 35.Ne7 Kh5 36.Nc6 Kh4 37.Na7 g5 (37...Nf6 38.Nc8 Nd7 39.Bc4+-) 38.Nc8 (better 38.a5 Nf6 39.ab6 g4+-) 38...Kh3 (38...c4 39.Bc4 Nf6 40.Nb6+-) 39.a5 Nh6 (39...Kg2 40.a6 Nf2+-) 40.ab6 g4 41.b7 Kg2 42.Bf1 Kg1 43.b8Q Nf7 44.Qc7 Ng5 (44...Nd6 45.Qg7 Kh1 46.Qg4 Kh2 47.Qf3 Nc8 48.Qg2) 45.Qe5 Nh3 (45...Ne4 46.Qe4 Kh2 47.Qg4 c4 48.Qf3 c3 49.Qg2) 46.Qg3 Kh1 47.Bh3 gh3 48.Qf3 (48.Kf1 h2 49.Qf3) 48...Kh2 (48...Kg1 49.Qg3 Kh1 50.Kf1 h2 51.Qf3) 49.b6 (49.Kf1 c4 50.Qg3 Kh1 51.Qh3) 49...c4 (49...Kg1 50.Qg3 Kh1 51.Kf1 h2 52.Qf3) 50.b7 c3 (50...Kg1 51.b8Q h2 52.Qbg3) 51.Qc3 (51.b8Q Kg1 52.Qbg3) 51...Kg1 (51...Kg2 52.Qg3 Kh1 53.b8Q h2 54.Qh2) 52.Kd1 (52.Qg3 Kh1 53.b8Q h2 54.Qh2) 52...h2 53.Qg3 Kf1 (53...Kh1 54.Qh3 Kg1 55.b8Q h1Q 56.Qbg3 Qg2 57.Qhg2) 54.Qh2 (54.b8Q h1Q 55.Qb5) ½–½. beatmeeasy (1880) – BiggieM3 (1845), lichess.org, 2020.

6.Bc4 b6 7.Qf3 c6 8.bc6 Qc7 9.Na3 a6 10.Rc1 Nc6?? (better 10...b5 11.Bb3 e5+=) 11.Bf7! Kf7 12.Rc6 (worse 12.Qc6 Qc6 13.Rc6 Bb7-/+) 12...Qd8? (better 12...Qb8 13.Bf6 ef6 14.Qd5 Ke8+-) 13.Rf6! gf6 (13...ef6 14.Qa8 Discovered attack; 13...gf6 14.Qa8 Discovered attack) 14.Qa8 Qd3 (14...e5+-) 15.Qc8 1-0. carlos78 (2275) - RogerMaster (2200), Rated Blitz game, lichess.org, 2015.

6.Bc4 c6 7.a4 e6 8.d4 Bb4 9.Nd2 0-0 10.Rb1 (10.Ngf3 a6=) 10...cb5 11.ab5 Nc6?? (better 11...a5=) 12.bc6+- bc6 13.Ba1 a5 14.Ne2 (14.Ngf3 Ba6 15.0-0 Bb5+-) 14...Bd7 (14...c5 15.Qc2+-) 15.0-0 Rb8 (15...Qc7+-) 16.Qa4?? (16.Qc2 Qe7+-) 16...Qc7?? (16...Bd2 17.Qc2 Bb4 18.Bd3=+) 17.Nf4?? (17.Qc2 Rfd8+-) 17...c5?? (better 17...Bd2 18.Bd3 Bb4=+) 18.dc5?? (18.Qc2 cd4 19.Bd4 Bd2 20.Bf6 Bb4+-) 18...Qc5 (better 18...Ba4 19.Bf6 Bd2–+) 19.Bd4?? (19.Qa2 Bd2 20.Qd2 Qc4 21.Bf6 Bc6+-) 19...Qc7?? (better 19...Ba4 20.Bc5 Bc5 (worse 20...Bd2 21.Bf8 Rb1 22.Rb1 Kf8 23.Rb7+=) 21.Be6 fe6 22.Ne6 Bb4 23.Nf8 Kf8-/+) 20.Qa2 (better 20.Qc2+-) 20...e5+- 21.Rbc1 (21.Rfc1 Bc6 22.Be5 Qe5 23.Bf7 Rf7 24.Rc6 Bd2 25.Rb8 Qb8 26.Qd2 a4+-) 21...Qd6 22.Ne4?? (better 22.Bf7 Rf7 23.Nc4+-) 22...Qe7?? (better 22...Ne4 23.Bd5 Nf6–+ (23...ef4?! 24.Be4 fe3 25.fe3-/+; 23...ed4?! 24.Be4 de3 25.fe3–+)) 23.Nf6+- gf6 (23...Qf6 24.Nd5 Qd6 25.Nb4 ed4 26.Nc2+-) 24.Nd5 Qe6 (24...Qd6 25.Nb4 ed4+-) 25.Nb4 ab4 (25...Qd6 26.Na6 ed4 27.Nb8 Rb8 28.ed4+-) 26.Be6 Be6 27.Qa6 (27.Qb2 ed4 28.ed4 Rfd8+-) 27...ed4 28.Rc6 (28.ed4!? b3 29.Rb1 Rfd8+-) 28...Rfd8 (28...b3 29.Qa3 b2 30.Rb1+-) 29.Re6 fe6 30.Qe6 Kg7 31.Qg4 Kh8 32.Qg8 1–0. Agiant – chessologgy, lichess.org, 2019.

6.Bc4 c6 7.Nc3 e6 8.a4 Be7 9.Nf3 0-0 10.0-0 Nbd7 11.Qc2 (11.bc6 bc6 12.Qc2 Rb8+=) 11...Nc5 (11...cb5 12.ab5 Qc7 13.Ne4+=) 12.d4 Ncd7 13.e4 (13.bc6 bc6 14.Rfd1 Rb8+-) 13...a6 (13...cb5 14.ab5 Nh5 15.Rfc1+=) 14.Rfb1 (14.bc6 bc6 15.Rab1 Qa5+-) 14...cb5 15.ab5 a5 16.Bd3 b6 (better 16...h6!?+-) 17.e5+- Nd5 18.Bh7 Kh8 19.Nd5 ed5 20.Bd3 Nb8 21.Qd2 Bg4 (21...Be6 22.Rc1+-) 22.Qf4 Bf3 (better 22...Qd7+-) 23.Qf3 (23.gf3?! a4+-) 23...g6 (23...Kg8 24.Bc4!+-) 24.Bc4! Ra7 (24...dc4 25.Qa8 Pinning (25.Qa8 Deflection)) 25.Bd5 Rd7 (25...f6 26.e6+-) 26.Bb3 (26.Bf7 Kg7 27.d5 Rf7 28.e6 Bf6 29.ef7 Rf7+-) 26...Kg7 (26...Bb4 27.Rd1+-) 27.d5 f6 (27...Kg8 28.Qg4 Bh4 29.e6+-) 28.d6 fe5 29.de7 Qe7 (29...Re7 30.Qe3 Nd7 31.Ba3+-) 30.Qe3 Re8 31.Qb6 Kh7 (31...Rb7 32.Qa5 Qd7 33.b6+-) 32.Qe3 Rb7 (32...Qf8 33.Be5 Qf5 34.f4+-) 33.Ra5 Qb4 (33...Qf6 34.Bd5 Rd7 35.b6+-) 34.Ra4 Qb5 (34...Qe7 35.Ba3 Qd8+-) 35.Bc1 Kg7 (35...Qf1 36.Kf1 Rb3 37.Qh6 Kg8 38.Qg6 Kf8 39.Qf6 Kg8 40.Rg4 Kh7 41.Qg7) 36.Qh6 Kf6 37.Bg5 Kf5 38.g4 1–0. michaelbuss (2790) – 19larry (1640), ChessWorld.net, 2011.

6.Bc4 e6 7.Nf3 c6 8.0-0 Be7 9.bc6 Nc6 10.Bb5 Qb6 11.Bc6 Qc6 12.Nc3 0-0 13.Ne5 Qb6 14.Rb1 Qc5 15.Nd3 (15.d4 Qa5+=) 15...Qc7 16.Rc1 Rd8 (16...Qd6 17.Ne1+=) 17.Ne4 Qd7 18.Nf6 Bf6 (18...gf6 19.Qg4 Kh8 20.Rc3=) 19.Bf6+= gf6 20.Rc3 e5 21.e4 b6 22.Qc2?? (better is 22.Re1!?+=) 22...Bb7 (22...Ba6 23.Nb4 Bf1 24.Nd5–+) 23.f3? (better is 23.Rc7 Qd3 24.Qd3 Rd3 25.Rb7 Rd2 26.a3+=) 23...Ba6–+ 24.Rc1? (24.Nf2 Bf1 25.Kf1 Qd2 26.Ng4–+) 24...Bd3 25.Qb2 Rac8 26.Rc8 Rc8 27.Rc8 Kg7 (better is 27...Qc8 28.g4 Be4 29.fe4 Qg4 30.Kf2 Qf4 31.Kg1 Qe4–+) 28.Rc1 Kg6 29.Rc3?? (29.Re1 Kg7+-) 29...Ba6 (29...Qd4 30.Kh1 Qf2 31.Qa1 Bf1 32.Qf1 Qf1) 30.Qc1 f5 31.ef5 Qf5 32.Qc2 Qc2 33.Rc2 Bd3 34.Rc3 Bf5 35.Kf2 b5 (35...Be6 36.a3+-) 36.Ra3 Bd3 (36...h6+-) 37.Rd3 1–0. Valpa – Ama49, playchess.de, 2004.

6.cd5 ed5 7.Nf3 Bb4 8.Be2 a5 9.0-0 0-0 10.a3 Bc5 11.Qc2 Bb6 (11...Nbd7 12.Rc1=) 12.Ng5 h6?? (better 12...Nbd7+=) 13.Bf6+- hg5 14.Bd8 (14.Bd8 Rd8 15.d4+-) 1-0. carlos78 (2230) - sergt777 (2010), Rated Blitz game, lichess.org, 2015.

6.Nf3 a6 7.Qa4 =.

6.Nf3 c6 7.a4 Be7 8.Bd3 0-0 9.0-0 Nbd7 (9...a6 10.cd5 Nd5 11.Qc2=) 10.Qc2 e5 (better 10...dc4!? 11.Bc4 cb5 12.ab5 Nb6=) 11.Ne5+- Ne5 12.Be5 dc4 13.Bc4 Bd6 14.f4 Qc7 (better 14...Ng4!? 15.Bd6 Qd6+-) 15.Bf6+- gf6 16.Rf3 (16.Bd3 h6+-) 16...cb5 17.Rg3 (17.ab5 Be6 18.Bd3 Qc2 19.Bc2 a6+-) 17...Kh8+- 18.ab5 Bd7 (18...Be6 19.d3+-) 19.Qb2+- Be7 20.Bd3 (20.d3 a6+-) 20...Rg8 (20...Rfd8+-) 21.Rg8 Rg8 22.Ra7 Qb6 (22...Qc5 23.Ra4+- (23.Rb7 Qd5 24.Bf1 Qb7–+)) 23.Qd4 Qc7 (23...Qd4 24.ed4 Bc8+-) 24.Qe4 f5 (24...Kg7 25.Qe7 Re8 26.Qb4+-) 25.Qe7 Qc1 (25...Qb6 26.Qa3+-) 26.Kf2 (better 26.Bf1 Qc8 27.Qe5 Rg7 28.Qa1+-) 26...Be6 (26...Qc8+-) 27.Qf6 Rg7 28.Ra8 (28.Ra8 Qc8 29.Rc8 Bc8 30.Bf5 Bf5 31.Qf5+-) 1–0. DEFFM – GuestMYSR, freechess.org, 2018.

7.a4 Bd6 (7...Be7 8.Be2 0-0 (8...Nbd7 9.0-0 0-0 10.a5 a6 11.b6 Bd6; 8...dc4 9.0-0 0-0 10.Bc4 Nbd7 11.a5 a6; 8...a6 9.d4 0-0 10.dc5 Bc5 11.0-0 b6) 9.0-0 Nbd7 10.a5 a6 11.b6 Bd6; 7...Nbd7 A) 8.Be2 Bd6 (8...Nb6 9.cd5 Nbd5 10.0-0 Be7 11.d4 0-0; 8...dc4 9.Na3 c3 10.Bc3 Ne4 11.Qc2 Nc3) 9.0-0 0-0 10.d4 cd4 11.Qd4 e5; B) 8.Nc3 Bd6 (8...Qa5 9.Qb3 Qb4 10.Qb4 cb4 11.Nd1 dc4; 8...Be7 9.Be2 0-0 10.0-0 dc4 11.a5 b6) 9.d4 Qa5 10.cd5 ed5 11.Be2 c4) 8.cd5 (8.Bf6 Qf6 9.Nc3 dc4+= (9...0-0 10.cd5 e5 11.Qc2 Rd8) 10.Ne4 Qe7 11.Nd6 Qd6; 8.Be2 0-0 (8...Nbd7 9.0-0 0-0 10.d4 cd4 11.Qd4 e5; 8...dc4 9.Na3 Bc7 10.Nc4 0-0 11.d4 Nbd7; 8...b6 9.0-0 0-0 10.d4 Bb7 11.cd5 Nd5) 9.d4 dc4 10.0-0 Qe7 11.dc5 Bc5; 8.Bd3 0-0 (8...a6 9.0-0 0-0 10.Na3 Nbd7 11.Qc2 Qc7; 8...Nbd7 9.cd5 ed5 10.0-0 0-0 11.a5 Re8) 9.0-0 Nbd7 10.Qc2 Re8 11.Nc3 Nb6; 8.d4 0-0 (8...Nbd7 9.dc5 Nc5 10.cd5 ed5 11.Be2 0-0) 9.dc5 Bc5 10.Be2 Qe7 11.0-0 Rd8) 8...ed5 9.Be2 0-0 10.0-0 Nbd7 (10...Re8 11.a5 Bf5) 11.d3 (11.d4 c4) 11...Re8 12.Nbd2 Ng4 (12...b6 13.Qc2=) 13.h3 (13.a5 Qe7=) 13...Nge5 (13...Ngf6 14.a5=) 14.Ne5 (14.d4 Nf3 15.Bf3 Qg5=) 14...Be5 15.Be5 Ne5 16.d4 (16.Qc2 d4 17.Qc5 de3=) 16...cd4 17.ed4 Ng6 18.Bd3 (18.Re1 Qf6=) 18...Nf4+= 19.Qc2?? (better is 19.Nf3+=) 19...Bh3–+ (19...Nd3?! 20.Qd3 Qg5 21.Nf3=) 20.Bh7 Kh8 21.Bf5 (21.Nf3 Bg2 22.Qf5–+) 21...Bg2 22.Rfe1 (22.f3 Qh4 23.Ne4 Qh1 24.Kf2 Bf1 25.Qd2 Qg2 26.Ke1 Nd3 27.Kd1 Qf3 28.Kc2 de4 29.Bg4 Rac8 30.Kb1 Qg4 31.Ka2 Qe6 32.Ka3 Qd6 33.Ka2–+) 22...Qg5 (22...Qh4 23.Re8 Re8 24.Bh3 Qh3 25.Qh7 Kh7 26.f3 Ne2 27.Kf2 Qg3) 23.Bd3 Bh3 0–1. hal1958 – Vatsal, playchess.de, 2003.

7.Nc3 A) 7...Qa5 A1) 8.Rc1 Nbd7 (8...Be7 9.Qb3 Qb4 10.Qb4 cb4 11.Ne2 Nbd7; 8...Bd6 9.Qb3 Qb4 10.Qb4 cb4 11.Ne2 Nbd7) 9.d4 Qb4 10.Rb1 cd4 11.Qd4 Qa5; A2) 8.Qc2 Nbd7 9.Be2 Bd6 10.0-0 0-0 11.Ng5 h6; A3) 8.Be2 Bd6 9.d4 0-0 10.cd5 Nd5 11.Qd2 b6; A4) 8.Qb3 Qb4 (8...dc4 9.Bc4 Bd6 10.Ne2 Bd7 11.0-0 a6) 9.Qc2 Be7 10.cd5 ed5 11.Nd5 Nd5; B) 7...Bd6 8.d4 0-0 (8...Qa5 9.cd5 cd4 10.Qd4 ed5 11.Be2 0-0; 8...cd4 9.Qd4 a6 10.cd5 ed5 11.Bd3 ab5) 9.cd5 ed5 10.dc5 Bc5 11.Rc1 Be6.

7.Bd3 A) 7...a6 8.Nc3 Bd6 9.0-0 0-0 10.Qc2 Nbd7 11.a4 Nb6; B) 7...Be7 B1) 8.Qc2 a6 (8...Nbd7 9.0-0 Bd6 10.cd5 ed5 11.Rc1 c4; 8...dc4 9.Bc4 0-0 10.d4 cd4 11.Bd4 Qa5; 8...Bd6 9.0-0 Nbd7 10.a4 e5 11.cd5 Nd5) 9.a4 dc4 10.Bc4 ab5 11.ab5 Ra1; B2) 8.Nc3 0-0 (8...a6 9.0-0 ab5 10.Nb5 0-0 11.Qc2 Nc6; 8...Bd6 9.Qb3 dc4 10.Bc4 0-0 11.0-0 Qc7; 8...Qd6 9.0-0 0-0 10.Ne2 Nbd7 11.cd5 ed5) 9.0-0 Nbd7 10.Be2 Nb6 11.d3 a6; B3) 8.cd5 ed5 9.0-0 0-0 10.Nc3 Re8 11.Rc1 c4; B4) 8.0-0 a6 (8...0-0 9.Qc2 Nbd7 10.Rc1 Bd6 11.cd5 ed5; 8...Nbd7 9.Qc2 Bd6 10.a4 0-0 11.a5 Qe7; 8...Bd6 9.Ne5 0-0 10.f4 a6 11.a4 b6) 9.Qa4 0-0 10.Nc3 b6 11.Qc2 ab5; C) 7...Bd6 C1) 8.Nc3 0-0 (8...Nbd7 9.0-0 0-0 10.Qc2 Nb6 11.cd5 ed5) 9.0-0 Nbd7 10.Qc2 Nb6 11.cd5 ed5; C2) 8.Qc2 Nbd7 (8...a6 9.Nc3 b6 10.0-0 dc4 11.Bc4 0-0; 8...dc4 9.Bc4 Nbd7 10.e4 e5 11.0-0 Qe7; 8...Bd7 9.Be5 Be5 10.Ne5 Qc7 11.f4 a6) 9.0-0 0-0 10.Nc3 Nb6 11.cd5 ed5; C3) 8.Bf6 Qf6 9.Nc3 dc4 10.Ne4 Qd8 11.Nd6 Qd6; C4) 8.0-0 Nbd7 (8...0-0 9.Ne5 a6 10.Na3 b6 11.f4 Bb7) 9.Nc3 0-0 10.Qc2 Nb6 11.cd5 ed5.

7.d4 cd4 8.Bd4 Bb4 (8...Nbd7 9.cd5 Qa5 10.Nbd2 Nd5 11.Rc1 N7f6) 9.Nbd2 0-0 10.cd5 Nd5 11.Bd3 a6.

7.d4 Nbd7= A) 8.dc5 Nc5 (8...Bc5 9.cd5 ed5 10.Be2 0-0 11.0-0 Re8) 9.cd5 Nce4 10.Nbd2 Bb4 11.de6 Be6; B) 8.Be2 dc4 (8...cd4 9.Bd4 dc4 10.Bc4 Bd6 11.0-0 0-0) 9.Bc4 cd4 10.Bd4 Bd6 11.0-0 0-0; C) 8.Bd3 dc4 (8...cd4 9.Bd4 Bb4 10.Bc3 Bc3 11.Nc3 Qc7; 8...Nb6 9.Nfd2 cd4 10.Bd4 dc4 11.Nc4 Nc4; 8...Bd6 9.0-0 0-0 10.cd5 ed5 11.dc5 Nc5) 9.Bc4 cd4 10.Bd4 Bd6 11.0-0 0-0; D) 8.cd5 ed5 (8...Nd5 9.Nc3 a6 10.e4 Nc3 11.Bc3 Nf6) 9.dc5 Nc5 10.Be2 Bd6 11.0-0 0-0.

7.Be2 A) 7...Bd6 A1) 8.0-0 0-0 (8...Nbd7 9.d4 0-0 10.cd5 ed5 11.dc5 Nc5; 8...dc4 9.Na3 c3 10.dc3 0-0 11.Qc2 Nbd7) 9.d4 b6 10.Nc3 Bb7 11.dc5 bc5; A2) 8.d4 0-0 (8...Nbd7 9.cd5 Nd5 10.dc5 Bc5 11.0-0 0-0) 9.0-0 Nbd7 10.cd5 ed5 11.dc5 Nc5; B) 7...Be7 B1) 8.0-0 a6 9.d4 ab5 10.cd5 c4 11.de6 Be6; B2) 8.Qc2 0-0 (8...a6 9.0-0 ab5 10.cb5 0-0 11.Rc1 Nbd7; 8...Nbd7 9.0-0 0-0 10.Nc3 Bd6 11.Rac1 dc4; 8...dc4 9.0-0 a6 10.Nc3 ab5 11.Nb5 b6) 9.d4 cd4 10.Bd4 Qc7 11.0-0 Nbd7; B3) 8.d4 0-0 (8...Nbd7 9.dc5 Bc5 10.0-0 0-0 11.cd5 Nd5; 8...dc4 9.Bc4 a6 10.ba6 Na6 11.0-0 0-0) 9.0-0 a6 10.cd5 Nd5 11.dc5 Bc5; C) 7...Nbd7 8.0-0 Bd6 (8...dc4 9.Na3 a6 10.ba6 b6 11.a7 Ra7; 8...Be7 9.d4 dc4 10.Qc2 cd4 11.Bd4 Nb6; 8...a6 9.Nc3 Bd6 10.d4 dc4 11.Bc4 Nb6) 9.d4 cd4 10.cd5 e5 11.Nbd2 Nb6; D) 7...a6 8.Na3 (8.d4 ab5 9.cd5 c4 10.de6 Be6 11.0-0 b4; 8.cd5 ed5 9.ba6 ba6 10.Qa4 Nbd7 11.0-0 Rb8; 8.ba6 Na6 9.cd5 ed5 10.0-0 Be7 11.Nc3 0-0) 8...Bd6 (8...Be7 9.0-0 0-0 10.d3 Nbd7 11.Qc2 Qa5; 8...ab5 9.Nb5 Be7 10.Be5 0-0 11.Bc7 Qe8) 9.0-0 0-0 10.d4 cd4 11.Qd4 e5.

6.a4 e6 7.Be2 b6 8.0-0 Bb7 9.d4 Be7 10.Nbd2 c6 11.c3 cb5 (11...0-0 12.c4=) 12.ab5+= 0-0 13.Qc2 Bd6 14.Bd3 g6 (14...Qc8 15.Ba3 Ba3 16.Ra3+=) 15.Ng5 (15.Ra4 Re8+-) 15...Kg7 (15...Ng4 16.h4=) 16.h4 (better 16.Ba3 Ne8 17.Ngf3+-) 16...h5? (16...h6 17.Ngf3+=) 17.Ndf3 (17.Bg6 Qb8 18.Bh5 Nh5 19.Qh7 Kf6 20.Qh5 Ke7+-) 17...Ng4 (17...Qe7 18.Ra4+-) 18.Rfe1 (18.Bg6 Qe8 19.Bh5 Ngf6+-) 18...Nh6 (18...Qb8 19.e4 Rc8 20.e5+-) 19.Ba3 (19.Bg6 Qe7 20.Bd3+-) 19...Nf6? (19...Qe7 20.Bd6 Qd6 21.Ra4+-) 20.Bd6 (20.Bg6 Ba3 21.Bf7+- (21.Ra3 Qd6 22.Ne5 Qa3 23.Bf7 Ne4 24.Ne6 Kf6 25.Nf8 Nf7=)) 20...Qd6+- 21.Ne5 (better 21.Ra4+-) 21...Bc8? (better 21...Nhg4 22.Bg6 Ne5 23.de5 Qe5 24.Bh5 Nh5 25.Qh7 Kf6 26.Qh5 Ke7+-) 22.Bg6+- Nhg4 (22...Nf5 23.Ngf7 Qc7+-) 23.Ng4 (23.Bf7!? Rh8 24.Bh5 Rh6 25.Bg4 Qe7+-) 23...fg6?? (better 23...hg4 24.Bd3 g3+-) 24.Ne5 Ne4 25.f3 Ng5 26.hg5 (26.Qg6 Kh8 27.hg5 Qc7 28.Qh5 Kg8+-) 26...Qe7?? (better 26...Rf5+-) 27.Qg6 Kh8 28.Qh5 Qh7 (28...Kg8 29.Ng6 Qg7 30.Nf8 Kf8 31.e4+-) 29.Qg4 (better 29.Ng6 Kg7 30.Qh7 Kh7 31.Nf8 Kg7 32.Ne6 Be6+-) 29...Rg8 (29...Kg8+-) 30.Kf2 Qg7 (30...Qc2 31.Kg3 Qf5 32.Qh4 Qh7 33.Qf4 Rg5 34.Qg5 Qg7 35.Ng6 Kg8 36.Rh1 Kf7 37.Rh6 Bd7 38.Ne5 Qe5 39.de5 Rg8 40.Rf6 Ke7 41.Rg6 Ke8 42.Rg8 Kf7 43.Qg7) 31.f4 (31.Rh1 Qh7 32.Rh7 Kh7 33.Qh5 Kg7 34.Qh6) 31...Bd7 (31...Rf8 32.Rh1 Kg8+-) 32.Rh1 Qh7 (32...Qh6 33.Rh6 Kg7 34.Qh5 Be8 35.Rh7 Kf8 36.Qh6 Rg7 37.Qg7) 33.Rh7 Kh7 34.Qh5 Kg7 35.Qh6 1–0. alessandrocarvalhaes (1900) – dontcheckmateme (1925), lichess.org, 2020.

6.c4 Nc5 7.cd5+= Nd5 (7...Qd5 8.d4 Nce4 9.Ne5+=) 8.Qc2 b6 (better 8...e6!? 9.Ba3 Nd7+=) 9.d4+- Ne6?? (better 9...Nb7+-) 10.Qc6+- Bd7 11.Qd5 Qc8 (11...Rc8 12.Ne5 g6 13.Nd7 Qd7 14.Qd7 Kd7 15.d5+-) 12.Ne5 f6 (12...Nd8+-) 13.Nd7 Ng5 (13...Nd8 14.Nf8 Kf8 15.Nc3+-) 14.Qc6 g6 (14...Qd7 15.Qa8 Qd8 16.Qa7 e6+-) 15.Nb6 Qd7 16.Qd7 Kf7 17.Na8 Bg7 18.Bc4 Kf8 (18...Ne6 19.Qe6 Ke8 20.Qc8) 19.Qc8 1–0. michaelbuss (2810) – heed73, ChessWorld.net, 2010.

6.c4 e5 7.Ne5 Bd6 (better is 7...Ne5 8.Be5 Be6+=) 8.Nf7?? (better is 8.Nd7 Bd7 9.Qf3+/-) 8...Kf7-/+ 9.cd5 Nd5?? (better is 9...Re8-/+) 10.Qh5+- Kg8 11.Qd5 Kf8 12.Bc4 Qe7 13.Qf3 Nf6 (13...Ke8 14.Qh5 g6 15.Qh6+-) 14.Nc3 Be6 (14...c6 15.Qe2 Bg4+-) 15.Qb7 Kf7 16.Be6 Qe6 17.Qf3 Rhe8 18.0-0 (18.d3 Kg8+-) 18...Kg8 19.h3 Rad8 (19...Qe5 20.Qg3! Qg3 21.fg3 Bg3 22.Rf3+-) 20.d4 Ne4 (20...Rb8 21.Rab1+-) 21.Ne4 Qe4 22.Qe4 Re4 23.a4 c5 (23...Kf7 24.Ba3+-) 24.bc6 Rc8 (24...Bc7 25.Rac1+-) 25.d5 Rb8 (25...Rc7 26.Bd4+-) 26.Bd4 Be5 (26...a6 27.Rab1 Ree8 28.f3+-) 27.Be5 Re5 28.c7 (28.c7 Rf8 29.d6+-) 1–0. pumpkin (2015) – gbsr (2175), net–chess.com, 2003. (=1.Nf3 Nf6 2.b4 d5 3.Bb2 Nc6 4.b5 Nb8 5.e3 Nbd7)

6.c4 e6 7.d4 Be7 (7...Ne4 8.Ba3=) 8.Nbd2 (8.Bd3 dc4 9.Bc4 0-0=) 8...0-0 9.Be2 dc4 (9...a6 10.ba6 b6 11.Ne5=) 10.Bc4 c6 (10...Nb6 11.0-0=) 11.a4 (11.bc6 bc6 12.Rb1 c5+=) 11...cb5= 12.ab5 b6 (12...Nd5 13.0-0+=) 13.Qb3 Bb7 (13...Nb8 14.0-0+=) 14.Ba3 (14.0-0 Bd5+=) 14...Bd5 (14...Ba3 15.Ra3 Bd5 16.0-0+=) 15.Be7 (15.Bd5 Nd5 16.0-0 Ba3 17.Qa3 a6+=) 15...Qe7 16.0-0 Rfe8 (16...Rfc8 17.Rfc1+=) 17.Bd5 ed5 18.Nc4?? (better is 18.Rfc1+/-) 18...dc4–+ 19.Qc4 Rac8 20.Qd3 Nf8 (20...Rc7 21.Qf5–+) 21.Ra2 (21.Rfd1 Ne4–+) 21...Ng6 (21...Nd5 22.Qf5 Nc3 23.Rd2–+) 22.Rfa1 Rc7 23.d5 (23.Rc2 Rc2 24.Qc2 Ne4–+) 23...Qd6 (23...Rd7 24.Nd4 Ne5 25.Qb1–+) 24.e4? (24.Ra7 Ra7 25.Ra7 Rc8–+) 24...Ne5 (24...Ne4 25.Ra7 Ra7 26.Ra7–+) 25.Qe3? (better is 25.Ne5 Re5 26.Ra7 Ra7 27.Ra7–+) 25...Nf3 26.gf3 (26.Qf3 Re4 27.Qg3 Qe7–+) 26...Ree7 (26...Nd5 27.Qb3 Qg6 28.Kf1–+) 27.Ra4?! (27.Qa3 Rc5–+) 27...g6 (27...Nd5 28.Qd2 Qg6 29.Kh1–+) 28.f4 Qc5 29.e5?? Nd5 30.Qc5 bc5 31.b6 Nb6 32.Re4 Nd5 33.f5 c4 34.f6 Re6 35.Rb1 Re8 36.Rd4 Nb6 37.Rbd1 c3 38.Rd8 Rc8 39.Rc8 Rc8 40.Rc1 c2 41.Kf1 Nd5 42.Ke2 Ne7 43.Kd2?? Nf5 44.Rc2 Rc2 45.Kc2 Nd4 46.Kd3 Nc6 47.Kc4 a5 48.Kc5 a4 (48...a4 49.e6 fe6–+) 0–1. toll (1610) – DONICECOLD (1635), ICC, 2003.

6.d4 c6 7.a4 cb5 8.ab5 Nb6 9.Nbd2 Bg4 10.h3 Bh5 11.g4 Bg6 12.Be2 Ne4 13.0-0 (13.Ne5 Nd2 14.Ng6 hg6 15.Qd2 e6=) 13...e6 14.c4 dc4 (14...Nd2 15.Nd2 dc4 A) worse 16.Bc4 h5-+ (16...Nc4?! 17.Nc4 Be4 18.Ba3=+); B) 16.Nc4 Nc4 17.Bc4=+) 15.Nc4= (worse 15.Bc4 Nd2 16.Nd2 h5-+ (16...Nc4?! 17.Nc4 Be4 18.Ne5=+)) 15...Nc4 16.Bc4 Bd6 (16...Nd6!? 17.Be2 Be4=) 17.d5+= 0-0 18.de6 fe6 19.Be6 Bf7 (better 19...Kh8!?+/-) 20.Bf5+- Qb6?? (better 20...Nf6 21.Ng5 Qe7+-) 21.Be4 Rfd8 22.Qc2 Bg6 (22...Qb5 23.Rfb1 Qd7 24.Bd4+-) 23.Bg6 hg6 24.Qb3 Kh8 25.Qf7 Qc7 (25...Bf8 26.Ng5 Rd6+-) 26.Bg7 Kh7 27.Ng5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.d4 e6 7.Bd3 Bd6 8.0-0 0-0 9.Nbd2 Re8 (9...c5 10.c4=) 10.c4+= dc4 11.Nc4 Be7 12.a4 Nb6 (12...Nd5 13.Qb1 h6 14.Ba3+/-) 13.Nce5 Nfd5?? (better 13...Nbd5!?+/-) 14.a5 (better 14.Bh7 Kh7 15.Nf7+-) 14...Nd7 15.Nc4 (better 15.Bh7!? Kf8 16.Bd3+-) 15...N7f6 16.e4 (16.Ba3 Ba3 17.Ra3 a6 18.ba6 Ra6+/-) 16...Nf4+= 17.Bc2 (17.Nfe5 Bd7 18.a6 ba6+=) 17...Ng6 (17...Bd7!? 18.b6 ab6 19.ab6 Ra1 20.Ba1 Bb5=) 18.Qe2 c6 (18...a6 19.ba6 Ra6 20.Nce5+=) 19.bc6+/- bc6 20.Nce5 Nd5? (better 20...Ne5 21.Ne5 Bd7+/-) 21.ed5+- Ne5 22.de5 (22.Ne5 cd5 23.Ba4 Bd6 24.Be8 Qe8+-) 22...ed5 23.Qd3 g6 24.e6! Be6 (24...Be6 25.Qc3 Combination; 24...fe6 25.Qd4 Combination) 25.Qd4 (25.Qc3 f6 26.Nd4 Qd6+-) 25...f6 26.Ng5 (26.Ba4 c5 27.Qd2 Rf8+-) 26...Qd7 27.Ne6 Qe6 28.Rfe1 Qf7 29.Ba4 c5? (29...Rec8 30.Rad1+-) 30.Qg4 (30.Be8 Re8 (30...cd4?? 31.Bf7 Kf7 32.Bd4+-) 31.Qe3 Kf8+-) 30...Red8 31.Rad1 (31.Bd7 Kg7+-) 31...d4 32.Qf3 (better 32.Bd7 f5 33.Qf3+-) 32...Rd6?? (better 32...Rab8!? 33.Ba3 Bf8+/-) 33.Qd3 (better 33.Bb3 Re8 34.Bf7 Kf7 35.Ba3+-) 33...Rad8? (33...Rb8 34.Bb5 Kh8+-) 34.Bb3 Rd5 35.Bd5 (better 35.Bd4 cd4 36.Re7 Qe7 37.Qd4+-) 35...Qd5 (35...Rd5 36.Bc1 Rd8+-) 36.Re7 c4 (36...f5 37.Qa6 Qb3+-) 37.Qh3 h5 38.Qg3 Qf5 39.Qc7 g5 (39...Qf2 40.Kf2 Rf8 41.Rh7 Rd8 42.Qf7) 40.Rg7 (40.Qd8) 40…Kh8+- (40...Kh8 41.Ba3 Rg8 42.Rg8 Kg8 43.Qd8 Kh7 44.Qe7 Kg6 45.Qe8 Kg7 46.Bf8 Kh8 47.Re1 g4 48.Bb4 Kh7 49.Re7 Kh6 50.Bd2 Qg5 51.Qh8 Kg6 52.Qh7). sezwho (2050) - jupil (2080), Rated Bullet game, lichess.org, 2014.

6.Be2 e6 =.

6.Be2 h6 7.0-0 Nb6 8.a4 Bf5 (8...e6 9.a5 Nbd7 10.c4+/-) 9.Nd4+/- Bh7 (9...e6 10.a5 Nc4 A) 11.Nf5?! Nb2 (11...ef5? 12.Bf6 Qf6 13.Nc3+/-) 12.Qc1 Nc4+=; B) 11.Bc4 dc4 12.a6+-) 10.a5 Nc8 (10...Nc4!? 11.Bc4 dc4+/-) 11.a6+- Rb8 12.ab7 Rb7 13.Nc6 Qd6 14.c4 e6? (14...Nb6 15.Be5 Qe6 16.cd5 Nfd5+-) 15.Ba3 Qd7 16.c5 Be7 (16...Ne4 17.d4 Nb6+-) 17.Ne5 Qd8 18.Nc6 Qd7 19.Qa4 0-0 (19...Ne4 20.Ne7 Nc5 21.Bc5 Ne7+-) 20.Ne7 Qe7 (20...Ne7 21.c6 Nc6 22.bc6+-) 21.c6 Nb6 (21...Qa3 22.Ra3 Rb8 23.Nc3+-) 22.Be7 Na4 23.cb7 Rb8 24.Ra4 Bb1 25.Ra7 Be4 26.Bf6 gf6 27.Ra8 Ra8 28.ba8Q Kg7 29.Rc1 d4 (29...c6 30.bc6 f5 31.c7 Bd3 32.c8Q Be2 33.Qh8 Kg6 34.Qaf8 Kg5 35.Qhh6 Kg4 36.Qfg7) 30.Qe4 de3 (30...c6 31.Qg4 Kf8 32.Rc6 de3 33.Rc8 Ke7 34.Qb4 Kd7 35.Qc5 ef2 36.Kf2 e5 37.Bg4 f5 38.Bf5) 31.Rc7 f5 (31...ef2 32.Kf2 e5 33.Bh5 f5 34.Rf7 Kg8 35.Qa8) 32.Qe6 Kf8 (32...ef2 33.Kf2 f4 34.Qf7 Kh8 35.Qg7) 33.Qf7 1-0. DEFFM – cristinel, freechess.org, 2021.

6.a4 b6 7.c4 dc4 8.Na3 Be7 9.Nc4 0-0 10.Be2 c6 11.0-0 Bb7 12.Nfe5 Qd5?? (better is 12...Nd5=) 13.Bf3 Qd8 14.bc6 (14.Nc6?! Bc6 15.bc6 Nd5+/-) 14...Ba6 15.c7! Qc7 16.Ba8 Bb7?? (better is 16...Nbd7 17.Bf3 Bc4 18.Nc4 Qc4+-) 17.Bb7 Qb7 18.Qb3 Nc6 19.Nc6 Qc6 20.Qb5 White prepares the advance a5 20...Qe4 21.a5 Bc5 (21...Qd5 22.Qa6+-) 22.Bf6 gf6 23.d4 (23.d4 Be7 24.ab6 ab6 25.Ra7+-) 1–0. pcmvr – gambit (2570), net–chess.com, 2016.

6.a4 b6 7.d3 Bb7 8.Be2 Nbd7 9.d4 Bd6 10.0-0 0-0 11.c4 dc4 12.Bc4 c5 13.Qb3 Bf3 14.gf3 Nd5 (14...cd4!? 15.Bd4 Be5=+) 15.f4= Qh4 (15...Ne7!?=) 16.Bd5+= ed5 17.Qd5 Nf6 18.Qg2 (18.Qd6?! Qg4 19.Kh1 Qf3 20.Kg1 Qg4 21.Kh1 Qf3 22.Kg1 Qg4=) 18...cd4 19.Bd4 Rac8 20.Nd2 Rc2 21.Ne4 Bb4?? (better 21...Be7+-) 22.Nf6 (22.Nf6 Qf6 23.Bf6+-) 1–0. onur604 (2320) – BOBBYFIS321 (2065), lichess.org, 2020.

6.a4 c6 7.Nc3+= Bb4 8.Bd3 (8.Be2 Nbd7+=) 8...0-0 9.0-0 (9.Rb1 Re8 10.0-0 e5=) 9...Nbd7= 10.bc6 (10.Rb1 e5 11.Ne2 Bd6-/+) 10...bc6 11.Rb1 (11.Ne2 Rb8=) 11...Nc5 (11...e5 12.Bf5+=) 12.Ne5 (12.Be2 Bd7+=) 12...Qd6 13.Na2 (13.f4=) 13...Ba5 (13...a5!?=) 14.Ba3+= Qe5 (14...Bd7 15.Bh7 Kh7 16.d4+/-) 15.Bc5+/- Bd7 (15...Rd8 16.Bd4 Qd6 17.Bf6 gf6 18.Qh5+=) 16.Bf8 Kf8 (16...Rf8 17.Nc3!+/-) 17.Nc3! Qg5 (17...Bc3 18.f4 Decoy) 18.Qc1+- e5 (18...Kg8 19.Qb2 Rc8 20.Qb7+-) 19.Qa3 Kg8 20.Qd6 e4 (20...Bb6 21.a5! Ba5 22.f4 ef4 23.ef4+-) 21.f4 ef3 (better is 21...Qf5 22.Be2 Ne8+-) 22.Rf3 Bg4 (22...Rd8 23.Rb8 Rb8 24.Qb8 Ne8 25.Qa7 Qd8+-) 23.Rb8 Ne8 24.Ra8 Bf3 (24...Bc8 25.Rc8 Bd8 26.Rd8 Qd8 27.Qd8 Kf8 28.Nd5 cd5 29.Bb5 g6 30.Qe8 Kg7 31.Qf7 Kh6 32.Rh3 Kg5 33.Qf4) 25.Re8 1–0. pierre – oppoxrx, internet, 2010.

6.a4 Bd6 7.c4 (7.Be2 Nbd7=) 7...0-0 (7...a6 8.Nc3=) 8.d4 b6 (8...dc4 9.Bc4 a6 10.Nc3=) 9.a5 (9.Nbd2 a6=) 9...c5 (9...a6!?=) 10.ab6+= Qb6 (10...a5 11.Bc3+=) 11.dc5+/- Bc5 12.Bf6 gf6 13.cd5 Rd8 14.Be2 (14.Nc3 Bb4 15.Rc1 Bb7+/-) 14...Rd5 15.Qb3 (15.Qa4 a5 16.Qg4 Kh8+=) 15...Rh5 (15...a6 16.Nc3 Rd8 17.0-0+/-) 16.0-0 (16.Nfd2 Rh6+=) 16...a6 (16...Bb7 17.Qc4 Rh6 18.Nc3+/-) 17.Nc3+/- f5 (better is 17...Bb7+/-) 18.Na4+- Qc7 19.b6 Qc6 20.Nc5 Qc5 (20...f4 21.b7 Rc5 22.ba8R Qa8 23.Qb4+-) 21.Rfc1 Qf8 (21...Nd7 22.Rc5 Nc5 23.Qb4+-) 22.Rc8! Qc8 Decoy theme: c8 23.b7 Theme: Double Attack 23...Qc6 24.ba8Q (better is 24.Ne5 Qe4 25.ba8R Qa8 26.Bh5+-) 24...Qa8 25.Qb6 Nd7 26.Qa6 (better is 26.Qc7 Nf6 27.Ne5 Qf8 28.Bh5 Nh5+-) 26...Qd5 (26...Qa6 27.Ra6 f4 28.ef4+-) 27.Qa8 (better is 27.Rd1 Qc5 28.Rd7 Rh6+-) 27...Kg7 (27...Qa8 28.Ra8 Kg7 29.Ne5 Ne5 30.Bh5+-) 28.Qd5 ed5 29.Ne5! Rh6 (29...Ne5 30.Bh5) 30.Nd7 Rd6 (30...d4 31.Ra7 de3 32.fe3+-) 31.Ne5 d4 (31...f4 32.Ra7 fe3 33.Rf7 Kg8 34.fe3+-) 32.ed4 (better is 32.Ra7 de3 33.Rf7 Kh6 34.fe3 Re6 35.Rf5 Kg7+-) 32...Rd4 33.Nf3 Re4 (33...Rd7 34.Kf1+-) 34.Bd3 Rf4 35.Ra5 Rb4 36.Bf5 h5 (36...Rc4 37.Kf1+-) 37.h4 Kf6 (37...Rb6 38.Bd3+-) 38.g3 (38.g3 Kg7 39.Bd7+-; 38.Bd3 Rb3 39.Rf5 Ke7+-) 1–0. Arias,Juan Carlos (2215) – Bobb,Nicolas, Lazarsky mem, 2004.

6.a4 Bd6 7.Be2 c5 8.c4 Nbd7 9.d4 0-0 10.0-0 b6 11.Nbd2 Bb7 12.Ne5 Rc8 13.a5 Ne4 (better 13...ba5!? 14.cd5 Bd5=) 14.Ne4+- de4 15.Nd7 Qd7 16.ab6 ab6 17.dc5 bc5 Opening the d–file gets White a lot of play 18.Be5 Rfd8 19.Qd6 Qd6 20.Bd6 Rd6 21.Rfd1 Rdd8 22.Rd8 Rd8 23.Ra7 Rb8 24.f3 Kf8 25.fe4 Be4 (25...e5!?+-) 26.Rc7+- Ra8 27.Bf3 Ra1 28.Kf2 Bd3? (better 28...Bf3 29.Kf3 Rb1+-) 29.b6 (29.Rc5?! Rb1+-) 29...Bc4 30.b7 (30.Rc5?! Ba6 31.Rc7 Rf1 32.Kg3 Rb1+-) 30...Rb1 31.Rc5 Bd5 32.Bd5 ed5 33.Rc8 (33.Rc8 Ke7 34.b8Q Rb8 35.Rb8+-) 1–0. onur604 (2320) – Sinmiedoanada (2105), lichess.org, 2020.

6.c4 a6 7.Nc3 =.

6.c4 Bb4 7.cd5 Qd5 (7...ed5 8.Be2=) 8.a3 (8.Bf6 gf6 9.a3 Be7+=) 8...Ba5 (8...Be7 9.Be5+=) 9.Nc3 (9.Bf6 gf6 10.Qa4 Bb6+-) 9...Qd6 (9...Qd8 10.Qa4 c6 11.Ne5+=) 10.Be2 (10.Qa4 Bb6+=) 10...0-0 11.0-0 (11.Qa4 Bb6+=) 11...Re8 (11...a6 12.Qa4 Qb6 13.Qh4+=) 12.Qc2 (12.Qa4 Bb6+=) 12...Nbd7 (12...a6 13.d4+=) 13.Ne4 (13.d4 c6+=) 13...Ne4 14.Qe4 Nf6 (14...Nc5 15.Qc2 Nd7 16.Ng5+-) 15.Bf6+- gf6 16.Bd3 (16.Rfd1!?+-) 16...f5+= 17.Qc4 (17.Qa4 Bb6 18.Bc4 Bd7+=) 17...b6 (17...a6 18.ba6 b6 19.Qc2+=) 18.Bc2 (18.Be2!?+-) 18...Bb7= 19.Nd4 (19.d4 a6 20.a4 Bd5=) 19...Bd5 (19...a6 20.Ba4=) 20.Qe2 Qc5 (better 20...a6!?=) 21.Rfc1+- Qd6 22.Bf5?? (better 22.Bb3 Bb7 23.Bc4+-) 22...ef5-/+ 23.Nf5 Qf6 (23...Qg6 24.Nh4 Qe4 25.Qf3 Bd2 26.Rc7-/+) 24.Ng3 (24.Qg4 Kh8 25.Qd4 Qd4 26.Nd4 Re7-/+) 24...Rad8 (better 24...Rac8-/+) 25.Rc7?? (better 25.Qg4 Kf8 26.Nh5-/+) 25...Qa1–+ 26.Nf1 Rc8 (better 26...Bd2 27.Ra7 Be4 28.Qg4 Kh8–+) 27.Qg4 (27.Qg4 Qg7 28.Rc8 Qg4 29.Re8 Kg7 30.e4–+) 1–0. GuestRXPW – GuestTHXC, freechess.org, 2016.

6.c4 b6 7.cd5 Qd5 (7...ed5 8.Bf6 Qf6 9.Nc3=) 8.Bf6+= gf6 9.Nc3 Qd8 10.Qa4 Bd7 11.d4 a6 12.Bd3 Bg7 (12...c6 13.ba6 Na6 14.Ba6+=) 13.Rc1 0-0 14.Qa3 (14.Nd1 Kh8+/-) 14...f5+= 15.0-0 (15.Ne2 Bc8+=) 15...c6 (15...Bc8 16.Qb2+=) 16.ba6 (16.Rfd1 cb5 17.Bb5 Ra7+/-) 16...Na6+= 17.Qd6 (17.Qa6 Ra6) 17...b5 (17...Qc7!? 18.Qe7 c5+=) 18.a4+/- ba4 (18...b4 19.Ba6 bc3 20.Bd3+/-) 19.Na4 Nc7 (19...Bc8 20.Qc6 Bd7 21.Qc4+/-) 20.Nc5+- Be8 21.Qg3 Nd5 22.Ne5 Qe7 (22...Kh8 23.Ra1+-) 23.Rb1+- Ra7 24.Ra1 f6 (24...Ra1 25.Ra1 h6 26.Ra6+-) 25.Ra7 Qa7 26.Ne6 (better is 26.Nc4!? Bf7 27.Nd6+-) 26...fe5+= 27.Nf8 (27.Nf8 f4 28.Qg5 Kf8 29.de5 fe3 30.fe3 Kg8 31.Qf5 Qe3 32.Kh1+/-) 1–0. marus2 – sydvicious, internet, 2001.

6.c4 b6 7.Be2 Bb7 (7...dc4 8.Bc4 a6 9.Ne5=) 8.a4 (8.cd5 Nd5 9.Qa4 Nd7=) 8...a6 (8...dc4 9.Na3=) 9.0-0 (9.cd5 Nd5 10.0-0 c6=) 9...Bd6 (9...dc4 10.Bc4 Bd6 11.Nc3=) 10.d4 (10.cd5 ed5 11.Nd4 c5=) 10...Nbd7 (10...ab5 11.cb5 0-0 12.Qc2=) 11.Nbd2 (11.cd5 Nd5 12.Ba3 0-0=) 11...ab5 (11...0-0 12.Qc2=) 12.ab5+= 0-0 (12...Ra1 13.Qa1 0-0 14.Qa7+=) 13.Ra8 Ba8 14.Qc2 c5 (14...dc4 15.Ra1+=) 15.bc6+- Bc6 (15...Nb8 16.cd5 Nd5 17.e4+-) 16.cd5+- Nd5?? (better 16...Bb7 17.e4 Bf4 18.de6 fe6+-) 17.Qc6 N7f6 (17...Nb8 18.Qc2+-) 18.Nc4 (18.e4 Nf4 19.Bb5 Bb4+-) 18...Nb4 (18...Bc7+-) 19.Qd6 (19.Qd6 Qd6 20.Nd6+-) 1–0. DEFFM – Eveningsacrifice, freechess.org, 2018.

6.c4 dc4 7.Bc4 Bc5 8.0-0+- 0-0 9.d4 Bb6 (9...Bd6 10.Bd3+-) 10.a4 (10.Nc3 c5+-) 10...c6 (10...c5 11.Nc3+-) 11.Ba3+- Re8 12.Nc3 e5? (better 12...Nd5 13.Qb3 Nd7+-) 13.Qb3 Be6 14.Be6 fe6 15.Ne5 (15.de5 Nd5+-) 15...cb5 16.ab5 (16.Nb5 Qd5 17.Nc4 Nc6+-) 16...Nbd7 17.Nc4 a5? (better 17...Bc7+-) 18.Nd6 Rf8 (18...Bc7 19.Ne8 (19.Nb7?! Qb8 20.Nc5 Nc5 21.Bc5 Bh2 22.Kh1 Ng4+-) 19...Qe8 20.d5+-) 19.Qe6 (19.Nb7!? Qe8+-) 19...Rf7 (19...Kh8+-) 20.Qf7 (20.Qf7 Kh8 21.Qe6+-) 1–0. GuestRJVX – GuestBXMB, freechess.org, 2019.

6.c4 dc4 7.Bc4 c6 8.Nc3 cb5 9.Nb5 (9.Bb5 Bd7+-) 9...a6 10.Nbd4 Bd7 (10...Bd6 11.Rc1+-) 11.0-0 (11.Ne5 Be7+-) 11...Nc6 12.Nc6 Bc6 13.Ne5 Be7 (13...Rc8 14.Qb3 Be7 15.Rac1+-) 14.Nc6 bc6 15.Qc2 0-0 16.Rab1 Qc7 17.f4 Rfd8 18.g3 (18.Be5 Qd7 19.Rb2 Ng4+-) 18...a5 19.Bd4 c5 (19...Nd5 20.Rfc1+-) 20.Be5 Qc6 (20...Bd6 21.Bf6 gf6 22.f5+-) 21.f5 (21.Bd3 Rac8 22.Bf6 Bf6 23.Bh7 Kf8+-) 21...Ng4 (21...Qe4 22.Qe4 Ne4 23.fe6+-) 22.Ba1+- e5 (22...Bg5 23.Rb3 a4 24.Ra3+-) 23.Be2 h5 (23...Nf6 24.Be5 Qe4+-) 24.Bf3 e4 (24...Qa6 25.Ba8 Qe2 26.Bg2 Rd2 27.Qe4+-) 25.Be4 Qa6 26.Ba8 Ra8 (26...Qa8 27.h3 Nf6 28.Rf4+-) 27.Qe4 Rd8 (27...Re8+-) 28.Qe6 (better 28.Qe7 Qd6 29.Qg5+-) 28...fe6 (28...Qe2 29.Rf4 Rd2 30.Rb8 Kh7 31.Rh8 Kh8 32.Bg7 Kg7 33.Qe5 Ne5 34.f6 Kh6 35.Rf2 Qf2 36.Kh1 Qh2) 29.Rbe1 ef5 (better 29...Rd2 30.Rf4–+) 30.Bc3 g6 31.e4 Rf8 (better 31...Bg5 32.ef5 Bd2 33.Re6–+) 32.h3 (32.ef5 Qa7 33.Re6 c4 34.Kg2 Qb7 35.Kh3 gf5–+) 32...Nh6 (32...Qd3 33.Kg2 f4 34.Rf3 Ne3 35.Kg1 Qe4 36.Rf2 fg3 37.Rf8 Kf8 38.Re3 Qf4 39.Rg3 Qg3 40.Kf1 Qf3 41.Kg1 Bh4 42.Be5 Qf2 43.Kh1 Qe1 44.Kg2 Qe4 45.Kf1 Qe5 46.a3 Qh2 47.d4 Qf2) 33.e5 Qc4 34.a3 (34.Rf4 Qd5 35.Rff1 Bg5–+) 34...a4 35.Rf4 (35.Re3 Bg5 36.Ref3 Rb8–+) 35...Qb3 36.e6 (36.Kg2 Nf7 37.h4 Qa3–+) 36...Qa3 37.Ra1 Qb3 38.Rfa4 Bd6 (better 38...Qe6 39.Ra7–+) 39.Ra7 Bg3 (better 39...Rc8 40.Rg7 Kf8 41.Rg6 Ng8–+) 40.Rg7= Kh8 41.Rg6 Qc3 42.dc3 Bf4 43.Kf2 1–0. Pierre – Bairty, internet, 2020.

6.c4 dc4 7.Bc4 Be7 8.Ng1 a6+= 9.Nf3 ab5 10.Bb5 c6 11.Be2 b5 12.Qc2 Bb7 13.Nc3 Nbd7 14.0-0 b4 15.Ne4 Ne4 16.Qe4 Nf6 17.Qc2 Nd5?? (better is 17...Ra5=) 18.Bg7+- Rg8 19.Qh7 Kd7 (19...Rg7 20.Qg7 Bf6 21.Qg8 Ke7 22.Qd8 Kd8 23.d4+-) 20.Ne5 Kd6 (20...Kc8 21.Nf7 Qe8+-) 21.Nf7 (21.Nf7 Kd7 22.Nd8 Rad8 23.Be5+-) 1–0. Janek – Hans, internet, 2016.

6.c4 c5 7.a4 b6 8.Be2 Bb7 9.0-0 Be7 10.Qc2 0-0 11.d3 Nbd7 12.Nbd2 Rc8 (12...a6 13.ba6 Ra6 14.Rfb1=) 13.Rad1 (13.a5+=) 13...e5? (better 13...Bd6!?=) 14.Ne5+- Ne5 15.Be5 d4 (15...Bd6!? 16.d4 cd4 17.Bd4 Re8+-) 16.ed4+- cd4 17.Bf3 Qd7 18.Bb7 Qb7 19.Nf3 Bc5 20.Nd4 Ng4 21.Nc6 Rc6 22.bc6 Qc6 23.d4 Ne5 24.dc5 (24.de5!? f6 25.ef6 Qf6+-) 24...Qc5 25.Rc1 Rc8 26.Rfe1 f6 27.Qf5 Kf7?? (27...Re8 28.Qe4+-) 28.h3 (better 28.Re5 Qe5 29.Qc8+-) 28...Re8? (better 28...g6 29.Qe4 Kg7+-) 29.Qh5 Kf8 30.Qh7 Rc8 31.Qh8 (31.Re4 a6+-) 31...Kf7 32.Qh5 g6 (32...Kf8 33.Qf5 Rd8 34.Qe4+-) 33.Qh7 Ke6 (33...Kf8 34.Re4+-) 34.Kf1 Kf5 35.g4 Kf4 (35...Ke6+-) 36.Qh6 g5 (36...Kf3 37.Re3 Qe3 38.Qe3) 37.Qf6 1–0. GuestLDZF – imreoir, freechess.org, 2017.

6.c4 Bc5 7.cd5 ed5 8.d4 =.

6.c4 c6 7.a4 Nbd7 8.d4 Be7 (8...Ne4 9.c5=) 9.Be2 Bb4 (9...0-0 10.0-0=) 10.Nbd2 (10.Bc3 Be7+=) 10...Be7 (10...dc4 11.Bc4 cb5 12.ab5+=) 11.0-0 0-0 12.c5 (12.Qc2 Re8+=) 12...Ne4 (12...e5 13.Ne5 Ne5 14.de5+=) 13.Qc2 (13.Ne4 de4 14.Nd2 Nf6+-) 13...f5 14.Ra3 (14.Rfb1 Qc7+=) 14...Ndf6 (14...Qc7 15.Rc1+=) 15.Ne4 (15.bc6 bc6 16.Ne5 Qc7+=) 15...fe4+= 16.Ne5 Bd7 (16...Qc7 17.f3+=) 17.Rb3 Be8 (17...Qc7 18.Rb1+=) 18.bc6+- bc6 (18...Bc6 19.Nc6 bc6 20.Rb7+-) 19.Rb7+- a5 (19...Bd7 20.Bc3+-) 20.Rb1 Nh5? (better 20...Bd7+-) 21.Bh5 Bh5 (21...Bh4 22.Be8 Bf2 23.Kh1 Qe8+-) 22.Nc6 Qe8 23.Ne7 (23.Re7?! Qc6 24.Bc3 Rab8+-) 23...Kh8 24.c6 Qf7 (24...e5 25.Nd5 Qg6 26.Kh1+-) 25.Ba3 Rae8 (25...e5 26.c7 Rac8 27.de5 Bg4+-) 26.c7 Re7 27.Be7 Qe7 28.c8Q Qf6 29.Qf8! Qf8 30.Rb8 Be8 31.Qc6! (31.Qc6 g6 32.R1b7 Bf7 33.Rf8 Kg7 34.Rff7 Kh6 35.h4 Kh5 36.Rh7 Kg4 37.Qe6) 1–0. DEFFM – GuestDBHL, freechess.org, 2018.

6.c4 Bd6 7.Nc3 0-0 8.cd5 ed5 9.Bd3 c6 10.a4 Bg4 11.Qc2 (11.0-0 Nbd7=) 11...h6 (11...Bf3 12.gf3 Nbd7 13.bc6 bc6 14.f4=+) 12.Nd4 c5 13.Nf5 Bc7 14.h3 Bh5? (better 14...Bf5 15.Bf5 Re8=) 15.g4 (better 15.Nd5!? Nbd7 16.Nc7 Qc7 17.g4+-) 15...Bg6 16.0-0-0 (16.Nh6!? gh6 17.Bg6+/-) 16...a6 (16...Kh7 17.g5 hg5 18.h4=) 17.f3 (17.Nh6!? gh6 18.Bg6+=) 17...c4 18.Be2 (18.Nh6 Kh7 19.Bg6 fg6=+) 18...ab5 (18...Re8!?-+) 19.Nb5-/+ Nc6 (better 19...Nbd7-/+) 20.Qc3?? (20.Bf6 gf6 21.Nh6 (21.Nc7 Bf5 22.Qf5 Qc7 23.Qd5 Ra4-+) 21...Kh8 22.Nf5+=) 20...Ba5 (better 20...Be5 21.d4 cd3 22.Qd3 Bb2 23.Kb2 Ra4 24.Ra1 Bf5 25.gf5 Rb4 26.Kc2-+) 21.Nh6? (better 21.Qa3 Ne8 22.Qa1-/+) 21...Kh7-+ 22.Qa3 Kh6 (22...Bb4 23.Qa2 gh6 24.h4-+) 23.h4 Kh7?? (better 23...Bb4 24.Qa2 Ne8-+) 24.h5=+ Bb4 (24...Bd3!? 25.Bd3 cd3=+) 25.hg6= Kg6 (better 25...Kg8!? 26.gf7 Rf7=) 26.Qa2+/- Ne4?? (better 26...Ne8+/-) 27.Qb1 (better 27.fe4 de4 28.Qc4 Qe7+-) 27...f5? (27...Qe7 28.fe4 Qe4 29.Qe4 de4+-) 28.gf5 (28.fe4?! fe4 29.g5 Rf2 30.Bh5 Kf5 31.Bg7 Ra4+-) 28...Kf5 (28...Kf7 29.fe4 Ra4 30.ed5 Na5 31.Bh5 Kg8+-) 29.Rdg1 (better 29.fe4 Ke6 30.ed5 Kd5 31.Qg6+-) 29...Ke6? (29...Bd2 30.Kc2 Nb4 31.Kd1 Be3 A) 32.fe4 de4 33.Bd4 Bg1 34.Rg1 Nd3 (34...Ra4 35.Bg4 Kg5 36.Bf3 Kh6 37.Rh1 Kg5 38.Rh5 Kg6 39.Qe4 Kf7 40.Qb7 Qe7 41.Nd6 Kg6 42.Qe7 Ra1 43.Ba1 Rf6 44.Qe4 Rf5 45.Qf5) 35.Bd3 ed3 36.Bg7 Qd5 37.Nd4 Ke4 38.Rg4 Rf4+-; B) 32.Bg7 Rg8 33.Nd4 Bd4 34.fe4 de4 35.Rh5 Ke6 36.Qe4 Be5 37.Kc1 Na2 38.Kc2 Nb4 39.Kb1 Nc6 40.Bc4 Ke7 41.Bf6 Kd7 42.Qf5 Kc7 43.Be5 Ne5 44.Qe5 Qd6 45.Rh7 Rg7 46.Rgg7 Kc8 47.Rh8 Qd8 48.Qc7; C) 32.Nd4 Bd4 33.Bd4+-) 30.Rg6 (30.fe4 Rf7+-) 30...Kd7? (30...Nf6 31.Rg7 Rh8 32.Rh8 Qh8+-) 31.Rg7 Kc8 32.Rhh7 (32.fe4 de4 33.Bc3 Ra4+-) 32...Bd2 (32...Nc5 33.Rc7 Kb8 34.Rc6 Nb3 35.Kd1 bc6 36.Be5 Kc8+-) 33.Kd1 c3 (33...Rg8 34.fe4 Rg7 35.Bg7+-) 34.Bc3 (better 34.Rc7 Qc7 35.Rc7 Kd8 36.fe4+-) 34...Nf2 (34...Bc3 35.Rc7 Qc7 36.Rc7 Kb8 37.Rc6 Rg8+-) 35.Kd2 d4 36.Ke1 (36.Nd6 Qd6 37.Qb7 Kd8 38.Qa8 Nb8 39.Ba5 Ke8 40.Bb5 Qc6 41.Bc6) 36...dc3 37.Kf2 (37.Nd6 Qd6 38.Qb7 Kd8 39.Rd7 Ke8 40.Qa8 Nb8 41.Qb8 Qb8 42.Rhe7) 37...Kb8 38.Nd6! Qc8 (38...Qd6 39.Qb7 Mate attack) 39.Rb7 Qb7 40.Rb7 (40.Qb7) 1-0. mordor1 (2090) - JZChess (2030), Rated Bullet game, lichess.org, 2015. (=1.Nf3 A00: Irregular Openings 1...d5 2.b4 Nc6 3.b5 Nb8 4.Bb2 e6 5.e3 Nf6)

6.d4 c6 7.a4 Bb4 (7...a6 8.Bd3=) 8.c3 Bd6 9.Nbd2 (9.Ba3 Ba3 10.Ra3 0-0+=) 9...Bd7 (9...0-0 10.Ba3=) 10.Bd3 (10.Ba3 Ba3 11.Ra3 Qe7=) 10...Qb6 (10...a6!?=) 11.c4+= cb5? (better 11...dc4 12.Nc4 Bb4 13.Nfd2 Qd8+=) 12.c5+- (12.ab5?! dc4 13.Nc4 Bb4 14.Nfd2 Qd8+-; 12.cb5?! a6+=) 12...Bc5 (12...Qd8 13.cd6 ba4 14.Ne5+-) 13.dc5 Qc5 14.ab5 Bb5? (14...Qb4 15.Qc1 Ne4+-) 15.Rc1 Qb4 16.Bb5 Qb5 17.Bf6 gf6 (17...0-0 18.Ne5 Nc6+-) 18.Rc8 Kd7 1–0. DEFFM – GuestQSXF, freechess.org, 2018.

6.d4 Bd6 7.Be2 0-0 8.0-0 Re8 9.Nbd2 Bd7 10.c4 dc4 11.Bc4 (11.a4 c3 12.Bc3 c6+=) 11...Be7 (11...a6 12.a4=) 12.Qb3 c6 13.a4 cb5 14.ab5 b6 (14...Qb6 15.Rfc1+/-) 15.e4 Bc8 16.Rfd1 (16.Qd3 Bb7+/-) 16...Bb7 17.Re1 h6 18.Rad1 Nbd7 19.d5 e5?? (better 19...ed5!? 20.ed5 Nc5+=) 20.Ne5 (20.d6 Bd6 21.Bf7 Kh8+-) 20...Nc5 (20...Ne5 21.Be5 Bc5+-) 21.Qa2 Bd6 22.Nc6 Bc6 23.bc6?? (23.dc6 Qc7 24.e5 Be5 25.Bf7 Qf7 26.Qf7 Kf7 27.Re5 Red8+-) 23...Be5?? (better 23...Nfe4 24.Ne4 Re4 25.Re4 Ne4+/-) 24.Be5+- Re5 25.f3 (25.d6!? Qd6 26.Nf3 Qc7 27.Ne5 Qe5 28.Bf7 Kh8+-) 25...Qd6 26.Nb3 (26.Qb2 Na4 27.Qd4 b5+-) 26...h5 (26...Nb3 27.Qb3 Rh5 28.g3+-) 27.Nc5 bc5 (27...Qc5 28.Kh1 Qd6+-) 28.f4?? (better 28.Qc2 Rae8 29.Rc1+-) 28...Re4+= 29.Re4 Ne4 30.Qe2 Nf6 (30...Nc3 31.Qe5 Qe5 32.fe5 Nd1 33.c7+-) 31.Qf3 (better 31.Qe5 Ne8 32.Qd6 (32.Qh5?! Qf4 33.Ba6 Rd8+/-) 32...Nd6 33.Ba6+-) 31...Re8 32.h3 (32.Qg3 Ng4 33.f5 Re5+/-) 32...Re4 33.Rc1 (33.Qb3 Re7+= (33...Qf4 34.d6 Re3 35.Bf7 Kf8 36.d7 Rb3 37.Bb3 Qe3 38.Kh2 Nd7 39.cd7 Qe5 40.Kg1 Qe3 41.Kh1+-)) 33...Rd4 d5 becomes the focus of attention (33...Rf4 34.Qb3 Rd4 35.Ra1=) 34.Qb3 Ne4 (34...Qf4 35.Rf1 Qc7 36.Qb7 Qb7 37.cb7+-) 35.Qb7 (35.Qe3 Qd8 36.Bd3+-) 35...Qf4=+ 36.c7?? (better 36.Rf1 Qe3 37.Kh2 Qg3 38.Kg1=) 36...Qf2 (better 36...Qc1 37.Bf1 Qe3 38.Kh2 Qf4 39.Kg1 Qf2 40.Kh2 Qf1 41.c8Q Kh7-+) 37.Kh2?? (better 37.Kh1 Nd6 38.Rf1+-) 37...Rd2 (better 37...Kh7!? 38.Qb1 Qg3 39.Kg1 Qc7-+) 38.Rg1?? (better 38.c8Q Kh7 39.Bf1 Qf4 40.Kg1 Qf2 41.Kh2 Qf4 42.Kg1 Qf2 43.Kh2=) 38…Qg3 (38...Qg3 39.Kh1 Nf2) 0-1. sezwho (2100) - jupil (2015), Rated Bullet game, lichess.org, 2014.

6.d4 Be7 7.Bd3 c6 (7...a6 8.a4+=) 8.a4+= Bd7 (8...Nbd7 9.0-0+=) 9.Ne5 (9.c4 dc4 10.Bc4 a6+-) 9...c5 (9...a6 10.Nc3+=) 10.c4+- dc4 11.Bc4 Bd6 (11...Bc8 12.Nd2+-) 12.Ng4 (12.dc5 Bc5 13.0-0 0-0+-) 12...Ng4 (12...a6 13.Nd2 cd4 14.Bd4 ab5 15.Nf6 gf6 16.ab5 Ra1 17.Qa1+-) 13.Qg4 0-0? (better 13...Qf6!?+-) 14.dc5+- g6?? (14...e5 15.Qe4 Bc5+-) 15.cd6 a6 16.Qh3 (16.Qd4 f6 17.Nc3 Kg7+-) 16...h5 (16...ab5 17.ab5 Ra1 18.Ba1+-) 17.Qg3 ab5 18.ab5 Ra1 19.Ba1 Qa5 (19...Bc8 20.Nd2 Qa5 21.Ke2+-) 20.Bc3 Qa4 (20...Qd8+-) 21.Qf4 f5 22.Qd4 (22.Qd4 Rf6 23.Qf6 Qd1 24.Kd1 Bb5 25.Qg7) 1–0. GuestTRLR – GuestSYXN, freechess.org, 2020.

6.Be2 a6 7.ba6 Na6 8.0-0 Bd6 9.c4 dc4 10.Bc4 Bd7 11.d4 Bb5?? (11...0-0 12.Nc3=) 12.Bd3 (12.Bb5 c6 13.Be2 0-0+-) 12...c5?? (12...Bd3 13.Qd3 0-0 14.e4=) 13.dc5 (13.Bb5 Ke7+-) 13...Bc5?? (13...Bd3 14.Bf6 Bh2 (14...gf6?! 15.cd6 Bf1 16.Kf1=; worse is 14...Qf6 15.Qd3 Qa1 16.Qb5 Kf8 17.cd6+/-) 15.Kh2 gf6 (15...Qf6? 16.Qd3 Qa1 17.Qb5 Kf8 18.Qb7+-) 16.Qa4 Ke7-/+) 14.Nc3 (better is 14.Bb5 Ke7 15.Qe2+-) 14...0-0 (better is 14...Bd3 15.Ne2 Be4–+) 15.Bb5+- ½–½. Fournier,Frederic (1835) – ciscom (1790), Active (5/0), 2004.

6.Be2 a6 7.ba6 Na6 8.0-0 Bd6 9.Be5 0-0 10.d4 =.

6.Be2 c6 7.a4 Be7 8.c4 0-0 9.0-0 a6 10.d4 (10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Nbd7+=) 10...ab5 11.ab5 Ra1 12.Ba1 Ne4 13.Nc3 Nc3 (13...cb5 14.cb5 Nd7 15.Qc2+=) 14.Bc3+- f5 (14...cb5 15.cb5 Qd6 16.Bd3+-) 15.Qc2 (15.Qb3 cb5 16.Qb5 Nc6+-) 15...Nd7 (15...cb5 16.cb5 Nd7 17.Qb3+-) 16.c5 Nf6 17.Ne5 (17.bc6 bc6 18.Ne5 Qc7+-) 17...Bd7 (17...Nd7 18.Nd3+- (18.bc6?! Ne5 19.de5 bc6+=)) 18.b6 Ne4 19.Bb2 Bf6 20.Nd7 Qd7 21.Ra1 Bh4 22.g3 Bf6 23.Ra7 Ng5 24.Kg2 h6 (24...Rb8+-) 25.f4 (25.Ba6 Rb8+-) 25...Nf7 (25...Ne4 26.Ba6 Rb8 27.Bb7+-) 26.g4 (26.Bd3 g6+-) 26...g6 (26...Nh8+-) 27.gf5 (27.Bc3 Kg7+-) 27...gf5 (27...ef5 28.Bc3+=) 28.Bh5 Kh7 29.Kf1 Nh8 30.Bc3 Ng6 31.Be1 Rg8 32.Bg3 Qg7 33.Qa2 Nh4 (33...Qd7 34.Be2+-) 34.Ra8 1–0. GuestKCBP – GuestFHMN, freechess.org, 2020.

6.Be2 Nbd7 7.0-0 Bd6 8.d4 0-0 9.c4 b6 10.Ne5 =.

6.Be2 Be7 7.0-0 0-0 8.d3 c6 9.c4 dc4 10.dc4 Qd1 (10...Nbd7 11.Qd2=) 11.Rd1+= cb5. secgestor – escaques, internet, 2007.

6.Be2 Be7 7.0-0 0-0 8.Ne5 Ne4 9.c4 f6 10.d3 =.

6.Be2 Be7 7.c4 0-0 8.0-0 c6 9.a4 Nbd7 10.d4 Qc7 11.Nbd2 Ne4 12.Bd3 f5 13.c5 (13.Qc2 c5+=) 13...g5 (13...e5 14.Qc2=) 14.a5 (14.h3!?+-) 14...g4= 15.Ne1 Ndf6 16.f3 (16.Ne4 de4 17.b6 Qb8=) 16...Ng5 (16...gf3!? 17.Nef3 cb5=) 17.b6 ab6 18.ab6 Qb8 19.Ra8 Qa8 20.Qb3 Qb8 21.Bc2 Rf7 (21...f4 22.Kh1+=) 22.Nd3+- Rg7 (22...gf3 23.Nf3 Nf3 24.Rf3+-) 23.Qa3 (better 23.f4 Nf7 24.Ra1+-) 23...Nh5?? (better 23...Bd7+-) 24.fg4+- Ng3 25.Re1 N3e4 26.Ne4 Ne4 27.Qa7 Bd6 28.cd6 Qd6 29.Nc5! Rg4 (29...Nc5 30.Qa8 Decoy) 30.Be4 fe4 (30...de4 31.Qa8 Qf8+-) 31.Qa8 Qf8 (31...Qd8 32.Nb7 Qg5 33.Qc8 Kg7 34.Re2+-) 32.Rf1 Qe8 33.Nb7 Bd7 34.Qe8 Be8 35.Nd8 c5 36.b7 (36.Ne6 h5 37.b7 Bb5 38.b8Q Kh7 39.Rf7 Kg6 40.Qg8 Kh6 41.Rh7) 36...Bb5 37.Rf2 cd4 38.Ne6 h5 (38...Rg2 39.Kg2 Bf1 40.Rf1 h6 41.b8Q Kh7 42.Qe5 de3 43.Qg7) 39.b8Q Kh7 40.Rf7 Kh6 (40...Kg6 41.Qg8 Kh6 42.Rh7) 41.Qh8 Kg6 42.Qg7 (42.Qf6) 1–0. GuestRXWT – Tsarkan, freechess.org, 2019.

6.Bf6 Qf6 7.c3 Bd6 8.Be2 e5 9.0-0 h5 10.a4 h4 11.Ne1 e4 12.Bg4? (12.d4 h3 13.g3 a6=) 12...Nd7 (12...Qe5 13.f4 ef3 14.Nf3 Bg4 15.Ne5 Bd1 16.Nf7–+) 13.Nc2? (13.d4 Qg6=+) 13...h3 14.gh3?? (14.gh3 Ne5 Decoy; 14.Bh3 Nb6 Decoy) 14...Qg5 (better 14...Qg6!? 15.f4 f5 16.Kh1 fg4 17.Qg4 Qg4 18.hg4–+) 15.Kh1 Ne5 16.Bc8 Rc8 17.Rg1 Qf6 18.Qg4?? (18.Rg2–+) 18...Ng4 19.Rg4 (19.Nd4 Qf2 20.Nf3 ef3 21.hg4 Rh2) 19...Qf2 20.Nd4 (20.Rg2 Qf1 21.Rg1 Qf3 22.Rg2 Rh3 23.Kg1 Qd1 24.Ne1 Qe1) 20…Qh2 0–1. Atotheking – asipiryozgat, lichess.org, 2019.

7.Nc3 0-0 8.d4 (8.Ne5 Nbd7 9.Nd7 Bd7=) 8...c6 (8...a6 9.c5=) 9.a4 (9.Ne5 cb5 10.cb5 Nbd7=) 9...Bb4 10.Qb3 Bc3 (10...c5!?=) 11.Bc3 Ne4 12.Bb4 White prepares the advance c5 (12.Bd3 Nc3 13.Qc3 dc4 14.Bc4 cb5 15.ab5 b6+=) 12...Re8 (12...c5 13.dc5 Qf6 14.Rd1+/-) 13.c5 (13.Bd3 cb5 14.ab5 dc4 15.Qc4 Nd6+/-) 13...a5 14.Ba3 b6 (14...cb5 15.Bb5 Nc6 16.0-0+=) 15.bc6 (15.Rc1 bc5 16.Bc5 Nc5 17.Rc5 cb5 18.Bb5 Nd7+=) 15...bc5= 16.dc5 (16.Rc1 Nc6 17.Bc5 Rb8=) 16...Nc6 17.Bb5 (17.Qb6 Qf6 18.Rc1 e5+=) 17...Bd7 (17...Rb8 18.Qd3 Qf6 19.Rb1=) 18.Nd4 (18.0-0 Rb8=) 18...Rb8 19.0-0 (better is 19.Rc1!?+=) 19...Nd2-/+ 20.Qd3 Nf1 21.Kf1 (21.Nc6 Bc6 22.Bc6 Nh2 23.Be8 Qe8 24.Qd1+/-) 21...Nd4–+ 22.ed4 Qc7 23.g3 (23.Bb2 Qh2 24.Bc3 Re7–+) 23...Bc6 (23...e5 24.Rb1–+) 24.Rb1 (24.Re1 Rec8–+) 24...e5 25.Bb2 e4 26.Qe2 Rb7 27.Bc1 Reb8 (better is 27...Qd8–+) 28.Bf4= White is in command 28...Qc8 (28...Qd7 29.Bb8 Rb8 30.Kg2=) 29.Bb8 Rb8 30.Qa2 (30.Qe1 Qc7=) 30...g6 (30...Bb7 31.Kg2=) 31.Bc6 Rb1 32.Qb1 Qc6 33.Qb8 Kg7 34.Qb5 (better is 34.Qd8 Qa6 35.Kg2+=) 34...Qc8? (better is 34...Qf6!?+=) 35.Qa5+- Qh3 36.Kg1 Qg4 37.Qd2 Qf3 (37...Kf6 38.a5 Ke6 39.a6+-) 38.a5 Qd3?? (better is 38...Kf8+-) 39.Qd3 ed3 40.Kf1 (40.Kf1 Kf6 41.a6+-) 1–0. Kanka,J (1650) – Polak,M, Plzen FSB C, 2003.

7.Nc3 a6 8.Be2 =.

7.Nc3 dc4 8.Bc4 0-0 9.0-0 Nbd7 (9...a6 10.Qa4=) 10.d4+= Nb6 11.Bb3 (11.Bd3 Nbd5+=) 11...a6= 12.a4 a5 (12...ab5 13.ab5 Ra1 14.Qa1=) 13.e4 c6 14.Qe2 c5 (14...cb5 15.ab5 Qd7 16.Na4+=) 15.dc5 Bc5 16.Rad1 Qe7 17.e5 Ne8 (17...Nfd5 18.Bd5 Nd5 19.Nd5 ed5 20.Rd5+=) 18.Ne4 Bb4 19.h3 (19.Qe3 Qc7+/-) 19...h6 (19...Nc7 20.Bd4 Nbd5 21.b6+/-) 20.Qe3 Nd7 21.Nd6 (21.Rd3 b6+/-) 21...Nc5? (better is 21...Ne5!? 22.Be5 Nd6=) 22.Bc2 b6 23.Ne4 (23.Rd4 Bb7+/-) 23...Nc7 (23...Bb7 24.Nc5 Bc5 25.Bd4+=) 24.Nc5+/- Bc5 25.Qe4 g6 26.Bc1 Rb8 (better is 26...Kg7!?+/-) 27.Bh6+- Bb7 (27...Re8 28.Bg5 Qf8 29.Qh4+-) 28.Qf4 (28.Bf8 Qf8 29.Qg4 Rc8+-) 28...Rfd8 (28...Rfc8 29.Bg5 Qe8 30.Bd3+-) 29.Rd8 (29.Bg5 Rd1 30.Be7 Nd5+-) 29...Rd8? (better is 29...Qd8 30.Bg5 Nd5+-) 30.Bg5 Nd5 (30...Qd7 31.Qh4 Bf3 32.Bd8 Be2+-) 31.Qh4 f6 32.ef6 Qf7 33.Ne5 Qh7 34.f7 Kh8 (34...Kg7 35.Qh7 Kh7 36.Bg6 Kg7 37.Bd8+-) 35.Bd8 (35.Bf6 Nf6 36.Qf6 Qg7 37.Ng6 Kh7 38.Nf8 Kh8 39.Qh4 Qh6 40.Qh6) 35...Qh4 36.Bh4 Kg7 37.Nd7 (37.Bg3!? Nc3+-) 37...Bb4 38.f8Q! Bf8 39.Nf8 Kf8 40.Bg6 (40.Be4 Kf7+-) 40...Nc3 (40...Nf4 41.Rd1 Ng6 42.Rd8 Kf7 43.Rd7 Ke8 44.Rb7 Nh4 45.Rb6+-) 41.Bc2 (41.Re1 Bd5 42.Bc2 Na2+-) 41...Bd5 (41...Ne2 42.Kh2 e5 43.Bf6+-) 42.Re1 Kf7 (42...Ba2 43.Bf6 Nd5 44.Re6+-) 43.Bd8 Ke8 44.Bb6 Kd7 45.Ba5 Kc8 46.Bc3 Kb7 47.a5 Ka7 48.Bd4 Kb7 49.a6 Ka8 50.b6 Kb8 51.Be4 Kc8 52.Bd5 ed5 53.Re7 Kd8 54.Rh7 Ke8 55.a7 Kd8 56.a8R (56.a8Q) 1–0. Fredek (2090) – Frankopan (1705), Freundschaftspartie, 5m + 0s, 2005.

7.d4 0-0 A) 8.Ba3= Ba3 9.Na3 c5 10.Nc2 cd4 11.Qd4 Qc7=; B) 8.Bd3 a6 (8...dc4 9.Bc4 a6 10.0-0 ab5 11.Bb5 Bd7=) 9.0-0 dc4 10.Bc4 ab5 11.Bb5 Bd7=; C) 8.Be2 dc4 (8...a6 9.Ba3 ab5 10.Be7 Qe7 11.cb5 c6=) 9.0-0 a6 10.Bc4 ab5 11.Bb5 Bd7=; D) 8.Nbd2 a6 (8...Bd7 9.Ne5 a6 10.ba6 Na6 11.c5 b6=) 9.Qa4 dc4 10.Bc4 Bd7 11.0-0 Nd5=; E) 8.Nc3 Re8 (8...a6 9.Qa4 Nbd7 10.c5 Ne4 11.Ne4 de4=; 8...c6 9.Be2 cb5 10.cb5 a6 11.Qa4 Qd6=; 8...dc4 9.Bc4 a6 10.ba6 Na6 11.0-0 b6=) 9.c5 c6 10.Bd3 b6 11.cb6 ab6=.

7.d4 a6 A) 8.Ba3 0-0 (8...Ba3 9.Na3 c5 10.Qa4 cd4 11.ed4 dc4=) 9.Be7 Qe7 10.Nc3 Ne4 11.Ne4 de4=; B) 8.Nc3 c6 (8...0-0 9.Qa4 c6 10.Ba3 dc4 11.Be7 Qe7=; 8...Bd7 9.Qa4 dc4 10.Bc4 c6 11.Ba3 cb5=; 8...dc4 9.Bc4 ab5 10.Bb5 Bd7 11.Bd3 0-0=; 8...ab5 9.cb5 0-0 10.Bd3 c6 11.0-0 cb5=) 9.Qa4 dc4 10.Ba3 cb5 11.Nb5 Nc6=; C) 8.Bd3 dc4 9.Bc4 ab5 10.Bb5 Bd7 11.Bd3 Nc6=; D) 8.Be2 dc4 (8...ab5 9.cb5 Bb4 10.Nc3 0-0 11.0-0 Bd6=) 9.Bc4 ab5 10.Bb5 Bd7 11.Bd3 0-0=; E) 8.ba6 Na6 (8...b6 9.Ba3 c5 10.Qa4 Nbd7 11.cd5 ed5=) 9.Ba3 Ba3 10.Na3 c5 11.Nc2 cd4=; F) 8.Qa4 Nbd7 9.c5 Rb8 10.Nc3 ab5 11.Bb5 c6=.

7.d4 dc4 8.Bc4 c6 9.0-0 Nbd7 (9...cb5 10.Bb5 Bd7 11.Bd3+=) 10.bc6+= bc6 11.Nbd2 Nd5 12.e4 N5b6 13.Bd3 0-0 14.a4 a5 15.Nb3 Re8 (15...c5!? 16.dc5 Nc5 17.Nc5 Bc5+/-) 16.Bc3+/- Ba6 17.Ba5 Bd3 (17...c5 18.dc5 Nc5 19.Nc5 Bc5 20.Bb5 Bb5 21.Qd8 Red8 22.ab5+-) 18.Qd3+- Bd6 19.Rfc1 Qc7 20.Qc2 Rec8 21.Bb6 Nb6 22.a5 Nd7 23.e5 Be7 24.Nfd2 Bg5 25.Rd1 c5 26.dc5 (26.Ne4 Be7+/-) 26...Ne5+/- 27.Ne4 Be7 28.a6 f5 (28...Ng4 29.Ng3+/-) 29.Ng3+- Bc5? (better is 29...f4!? 30.Ne4 f3+-) 30.Nc5 (30.Qc5?! Qc5 31.Nc5 Rc5+/-) 30...Qa7? (30...Nd7 31.Rd7 Qd7 32.Nd7 Rc2+-) 31.Rac1 Rc6 32.Ne2 (32.Qc3 Ng4 33.Qb4 Rc7+-) 32...Rac8 33.Qb3 Qe7 (33...Rc5 34.Qe6 Kf8 35.Qf5 Ke7 36.Qh7 Qa6 37.Qg7 Ke8 38.Rc5 Rc5+-) 34.Ne6! Rc1 35.Rc1 Rc1 36.Nc1 Nf7 37.Qb8 (37.Qb8 Nd8 38.a7 Qa7 39.Qa7 Ne6 40.Qd7+-) 1–0. woschkat (2175) – negracapa (1980), net–chess.com, 2001.

7.d4 c5 8.Nc3 (8.dc5 Bc5 9.cd5 ed5 10.Bd3 a6 11.ba6 Na6+=; 8.cd5 Qd5 (8...ed5 9.dc5 Bc5 10.Bd3 Bg4 11.0-0 0-0+=) 9.Qc2 Nbd7 10.Nc3 Qh5 11.Rd1 0-0+=) 8...cd4 (8...Nbd7 9.cd5 ed5 10.dc5 Nc5 11.Be2 0-0+=) 9.Qd4 0-0 (9...Qa5 10.Bd3 Nbd7 11.0-0 dc4+=) 10.cd5 b6 (10...ed5!? 11.Rd1 Be6+=) 11.Bc4+/- Bb7? (better is 11...a6+/-) 12.de6+- Qd4 13.ef7 Kh8 14.ed4 g6 15.0-0 Kg7 (15...Bf3 16.gf3 a6 17.ba6+-) 16.Rfe1 Bb4 17.Ne5 Nbd7 18.Rac1 Rac8 19.Be6 Rcd8 (19...Rfd8+-) 20.Nc6 Bc6 21.bc6 Nc5 (21...Rf7 22.Bf7 Kf7 23.cd7 Rd7+-) 22.dc5 Bc5 (22...Rd2 23.Ba1 bc5 24.Ne4+-) 23.Nd5 Rd5 (23...Rf7 24.Bf7 Kf7 25.Nf6+-) 24.Bd5 Rf7 25.Bf7 Kf7 26.c7 1–0. pierre – ss112, internet, 2008.

7.d4 c6 A) 8.Nc3 0-0 (8...cb5 9.cb5 0-0 10.Bd3 a6 11.Qa4 b6+=) 9.Rc1 a6 10.Qa4 dc4 11.Bc4 Nbd7+=; B) 8.c5 b6 (8...0-0 9.Qa4 cb5 10.Bb5 Bd7 11.0-0 Bb5=) 9.Ba3 0-0 10.bc6 Nc6 11.Bb5 Bd7=; C) 8.a4 0-0 9.Ba3 Ba3 10.Ra3 a6 11.Qb3 b6=; D) 8.Qb3 cb5 (8...0-0 9.Bd3 dc4 10.Qc4 a6 11.bc6 Nc6=; 8...Bd7 9.cd5 Nd5 10.e4 Nf4 11.Bc1 Ng6+=; 8...a6 9.ba6 b6 10.Ba3 c5 11.cd5 ed5=) 9.Qb5 Nc6 10.Ne5 a6 11.Qa4 0-0=; E) 8.Qa4 cb5 (8...Bd7 9.Ba3 0-0 10.Nc3 dc4 11.Be7 Qe7=; 8...0-0 9.Ba3 Bd7 10.Be7 Qe7 11.Qa3 Qd8=; 8...a6 9.Ba3 0-0 10.Be7 Qe7 11.Nc3 dc4=; 8...dc4 9.Bc4 Bd7 10.Ba3 cb5 11.Bb5 a6=) 9.Qb5 Nc6 10.Ne5 a6 11.Qa4 0-0=; F) 8.cd5 ed5 9.Bd3 0-0 10.0-0 cb5 11.Bb5 Bg4=.

7.Be2 0-0 8.0-0 a6 9.cd5 Nd5 10.Qa4 c6 11.bc6 Nc6=.

7.Be2 0-0 8.0-0 dc4 9.Bc4 a6 10.Qa4 Nbd7 11.Qc2 ab5=.

7.Be2 0-0 8.0-0 Nbd7 9.d4 (9.Nc3 Nc5+=) 9...Ne4 (9...a6 10.a4=) 10.Qc2+= f5 11.cd5 ed5 12.Nc3 c6 13.Qb3 Kh8 (13...Bd6 14.Rfc1+=) 14.Rab1 Qe8 15.Rfc1 Qg6 (15...Ndf6!?+-) 16.Ba3+- Ba3 17.Qa3 Re8 (17...Qd6 18.Qd6 Nd6 19.Ne5+-) 18.bc6+- bc6 19.Qa4 f4 (19...Rf8 20.h4+-) 20.Ne4 de4 (20...Re4 21.Rc6 Nf6 22.Bd3+-) 21.Rc6 Qg4 22.h3 Qh5? (22...Qf5 23.Qc2 a6+-) 23.Rb5 Qf7 (23...Nb6 24.Qb3 Nd5 25.Rd5+- (25.Qd5?! Qd5 26.Rd5 ef3 27.Bf3 Bb7+-)) 24.Ng5 Qe7 25.Re6 Qf8 (25...Qe6 26.Ne6 Re6+-) 26.Nh7! Kh7 (26...Qf7 27.Re8 Qe8+-) 27.Rh5 Kg8 28.Re8 Qe8 29.Bc4 1–0. DEFFM – GuestDJJH, freechess.org, 2018.

7.Be2 0-0 8.Nc3 a6 (8...dc4 9.0-0 a6 10.Qa4 c6 11.Bc4 Nbd7=) 9.cd5 ed5 10.Qa4 Nbd7 11.0-0 Nc5=.

7.Be2 0-0 8.cd5 Nd5 (8...ed5 9.0-0 Bd6 10.Nc3 Re8 11.Rc1 Qe7=) 9.Nc3 a6 10.Nd5 Qd5 11.Qc2 c6=.

7.Be2 a6 8.0-0 ab5 (8...0-0 9.cd5 Nd5 10.Qa4 c6 11.bc6 Nc6=; 8...dc4 9.Bc4 ab5 10.Bb5 Bd7 11.Qb3 0-0=; 8...Bd7 9.cd5 ed5 10.Qa4 0-0 11.Rc1 c5=) 9.cb5 0-0 10.Qc2 c5 11.Rc1 Nbd7=.

7.Be2 dc4 A) 8.0-0 a6 (8...c6 9.Bc4 cb5 10.Bb5 Bd7 11.Bf6 Bf6=) 9.ba6 b6 10.Qa4 Qd7 11.Qc2 Nc6=; B) 8.Bc4 a6 9.Qa4 c6 10.Nc3 0-0 11.0-0 Bd7=.

8.Qa4 0-0 (8...Nbd7 9.Be2 Nb6 10.Qc2 0-0 11.0-0 Bd6=; 8...Bf5 9.Be2 0-0 10.Nd4 Bg6 11.f4 c5=; 8...Bd6 9.Be2 0-0 10.0-0 Re8 11.Nc3 Nbd7=) 9.Be2 Re8 10.0-0 c5 11.bc6 Nc6=.

8.Qc2 a6 9.Bf6 Bf6 10.d4 Be7 11.Nc3 Bb4=.

8.Bd3 0-0 9.Qc2 a6 10.Nc3 ab5 11.Nb5 c6=.

8.Bd3 0-0 9.Qc2 h6 10.0-0 c6 11.a4 Nbd7 (better 11...Re8!?=) 12.bc6+- Nc5 13.Bf6 Nd3 1–0. GuestRXMP – guestfire, freechess.org, 2018.

8.Bd3 a6 9.Nc3 ab5 10.Nb5 c6 11.Nbd4 0-0=.

8.Bd3 c5 9.bc6 Nc6 10.0-0 0-0 11.Qb3 Ne4=.

8.Bd3 Bd6 9.0-0 a6 10.Nc3 Bg4 11.Be2 0-0=.

8.Bd3 Bd7 9.Nc3 Bg4 10.0-0 0-0 11.Be2 a6=.

8.Bd3 Nbd7 9.0-0 Nc5 10.Be2 Bf5 11.Nc3 0-0=.

8.Bd3 Be6 9.0-0 a6 10.Qa4 0-0 11.Rc1 c5=.

8.Bd3 Bg4 9.h3 Bh5 10.Qc2 Bf3 11.gf3 c5=.

8.Be2 0-0 9.0-0 Re8 10.Nc3 c5 11.bc6 Nc6=.

8.Be2 0-0 9.a4 c6 10.0-0 cb5 11.ab5 a6 12.Nc3 a5 13.Qc2 Ne4 (better 13...Be6!?+=) 14.Ne4+- de4 15.Qe4 g6 (15...Nd7 16.Bd3 g6 17.Bc4+-) 16.Qe5 f6 17.Bc4 Kh8 18.Qc3 Bb4 19.Qc2 Bf5 20.d3 b6 21.Ng5 Kg7 22.e4 Bd7 23.f4 (23.Ne6 Be6 24.Be6 Bd6+-) 23...Kh6 (23...h6 24.Ne6 Be6 25.Be6+-) 24.Nf3 (24.Nf7!? Rf7 25.Bf7 Bb5+-) 24...Qe7 25.Qc1 Be6?? (better 25...a4+-) 26.f5 (26.f5 Kg7 27.Be6 Bc5 28.Kh1+-) 1–0. GuestNCRJ – GhostSniper, freechess.org, 2017.

8.Be2 a6 9.Qa4 0-0 10.0-0 Nbd7 11.ba6 Nc5=.

8.Be2 c5 9.0-0 0-0 10.Qc2 Re8 11.Nc3 a6=.

8.Be2 Bd6 9.0-0 0-0 10.Qc2 Re8 11.Bd4 a6=.

8.Be2 Be6 9.0-0 0-0 10.Qc2 c5 11.Ng5 Nbd7=.

8.Be2 Bg4 9.0-0 a6 10.Qa4 Nbd7 11.ba6 0-0=.

7.0-0 0-0 8.c4 Nbd7 (8...dc4 9.Na3=) 9.d4 Nb6?? (better 9...b6=) 10.c5+- Bh2 (10...Nc4 11.Bc4 (11.cd6?! Nb2 12.Qb3 Nc4+-) 11...dc4 12.cd6 cd6 13.Qc2+-) 11.Nh2 (11.Nh2 Nbd7 12.Nf3+-) 1–0. Anonymous – Anonymous, lichess.org, 2020.

7.0-0 a6 8.ba6 Na6 9.Be5 0-0 10.d4 =.

7.0-0 Bd7 8.c4 dc4 9.Bc4 0-0 10.d4 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qe7 14.Nc3 c6 15.Qb3 c5 (15...Rc8 16.Bb2+=) 16.e4 (16.dc5!? Bc5 17.Rd1+=) 16...cd4= 17.Nd4 Ba3 (17...Bh2!? 18.Kh2 Qd6 19.g3 Qd4=) 18.e5+= Ng4 19.Nf3 Rd8 20.h3 Nh6 21.Ne4 Be8 22.Bd3 (22.Bc3 Qf8+/-) 22...b6 (22...Nf5 23.g4 Nh6 24.Bd4+/-) 23.Neg5 (23.Bd4 Nd7 24.Be3 Qb4 25.Qb4 Bb4+/-) 23...Nf5 24.Bf5 (better 24.g4!? Nh4 25.Bh7 (25.Nh4?! Qg5 26.Nf3 Qe7+=) 25...Kh8 26.Be4+/-) 24...ef5= 25.e6 f6 (25...Bc5!?=) 26.Nf7 (26.Nh4 Rc8 27.Ngf3 g6+/-) 26...Rc8 27.Nd4 Qb4 Attacks the isolani on b5 (27...Qc5 28.Qf3 f4 29.Qg4+/-) 28.Qb4 (28.Qf3 Rc1 29.Rc1 Bc1 30.Bc3+-) 28...Bb4= 29.Nf5 Bf7 30.ef7 Kf7 31.Rb1 (31.Bd4 Nd7=) 31...Bc5 32.Re1 (32.Rd1 Rc7=) 32...Rd8=+ 33.g3 1-0. zembelek (2000) - Bobby72 (2165), Rated Blitz game, lichess.org, 2014.

7.0-0 Nbd7 8.d4 a6 9.ba6 b6 10.Ne5 Ba6 11.c4 0-0 12.Nd2 Bb7 13.Qc2 Kh8 14.Bd3 c6 15.Ndf3 h6 16.a4 Rc8 17.Bc3 Qe7 (17...c5 18.Rfc1=) 18.Qb2 Bc7 (18...dc4 19.Nc4 c5 20.Nfd2+= (20.Nb6? Nb6 21.Qb6 Bf3 22.gf3 Nd5-+)) 19.c5 Rb8 20.cb6 Nb6? (better 20...Bb6 21.a5 Bc7+/-) 21.Bb4+- Bd6 (21...Qe8 22.Bf8 Qf8+-) 22.Bd6 Qd6 23.Qb6 Ba8 24.Qc5 (24.Qc5 Qc7 25.Rfc1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Be5 Be5 8.Ne5 Nbd7 9.Nd7 Qd7 10.0-0=.

6.Nc3 a6 A) 7.Nh4 Bd7 (7...Bg6 8.a4 Nbd7 9.ba6 ba6 10.Rb1 e6 11.Be2 Bd6 12.0-0 0-0; 7...Be6 8.Bd3 g6 9.0-0 ab5 10.Nb5 Nc6 11.Qf3 Bg7 12.Rfb1 0-0; 7...Bc8 8.a4 e5 9.Nf3 Bd6 10.Be2 0-0 11.0-0 Bf5 12.d4 e4; 7...Bg4 8.Be2 h5 9.h3 Be2 10.Qe2 Nbd7 11.0-0 e6 12.a4 Bb4) 8.a4 e5 9.Nf3 Bd6 10.Be2 0-0 11.0-0 e4 12.Nd4 c5; B) 7.Nd4 Bd7 (7...Bg6 8.f4 c5 9.Nf3 d4 10.ed4 cd4 11.Ne2 d3 12.Ned4 dc2) 8.Qf3 e6 9.Qg3 c5 10.Nf3 ab5 11.Nb5 Na6 12.a4 Rc8; C) 7.h3 ab5 (7...Bg6 8.a4 e6 9.Be2 Bd6 10.0-0 0-0 11.Nh4 ab5 12.Ng6 hg6; 7...h6 8.Nd4 Bd7 9.a4 e5 10.Nf3 Bd6 11.Be2 0-0 12.0-0 e4; 7...e6 8.Nd4 Bg6 9.a4 Bd6 10.Bd3 c5 11.Nf3 Nbd7 12.0-0 0-0; 7...h5 8.Nd4 Bd7 9.a4 e5 10.Nb3 c5 11.Qf3 Be6 12.ba6 ba6; 7...c6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Bg6 11.Bb2 e6 12.Be2 Bd6) 8.Bb5 c6 9.Be2 Nbd7 10.0-0 Nc5 11.Nd4 Bd7 12.Nb3 e6; D) 7.g3 ab5 (7...e6 8.Nh4 Bg4 9.Be2 Be2 10.Qe2 Bd6 11.0-0 0-0 12.e4 Nbd7; 7...h5 8.a4 Nbd7 9.ba6 ba6 10.Be2 Nc5 11.0-0 Bh3 12.Re1 e6; 7...c6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c5 11.Bg2 Nbd7 12.0-0 e6; 7...Bg6 8.a4 e6 9.Nh4 Bc5 10.Bg2 Bh5 11.Nf3 Nbd7 12.0-0 0-0; 7...h6 8.Bd3 Bh3 9.Ne5 ab5 10.Nb5 c6 11.Qf3 Nbd7 12.Ng6 Rg8; 7...g6 8.Nd4 ab5 9.Nf5 gf5 10.Nb5 Nbd7 11.Bg2 h5 12.Qe2 e6) 8.Bb5 c6 9.Bd3 Bd3 10.cd3 Nbd7 11.0-0 e6 12.e4 de4; E) 7.Rb1 ab5 (7...h6 8.ba6 Na6 9.Ba3 Qc8 10.Bd3 e6 11.Bf8 Kf8 12.0-0 Nc5; 7...h5 8.Nd4 Bd7 9.Qf3 e6 10.Qg3 ab5 11.Ncb5 Na6 12.Be2 c5; 7...e6 8.Nd4 Bg6 9.h4 h5 10.Bc1 e5 11.ba6 ba6 12.Nf3 Nc6; 7...g6 8.Nd4 ab5 9.Nf5 gf5 10.Nb5 Nbd7 11.c4 c6 12.Nd4 Nc5; 7...Qc8 8.Nd4 Bd7 9.Qf3 e5 10.Nb3 Bg4 11.Qg3 Bd6 12.h3 e4) 8.Bb5 c6 9.Be2 Nbd7 10.0-0 Nc5 11.d4 Na4 12.Ne5 Nc3; F) 7.h4 Bg4 (7...ab5 8.Bb5 Nc6 9.a4 Bd7 10.0-0 e6 11.Bc6 Bc6 12.Nb5 Bc5; 7...c6 8.a4 ab5 9.ab5 Ra1 10.Qa1 Bc2 11.Qa8 Qc8 12.Nd4 e5) 8.a4 Nbd7 9.ba6 ba6 10.Be2 Rb8 11.Rb1 e5 12.0-0 Bd6; G) 7.Bd3 Bd3 8.cd3 Nbd7 9.0-0 e6 10.a4 Bd6 11.Qe2 0-0 12.e4 de4; H) 7.a4 e6 (7...ab5 8.ab5 Ra1 9.Qa1 Bc2 10.Qa7 Qc8 11.Qa2 Nbd7 12.Nd5 Nd5; 7...h6 8.Nd4 Bg6 9.Be2 c5 10.bc6 Nc6 11.Nc6 bc6 12.h4 Rb8; 7...Nbd7 8.Nd4 Bg6 9.ba6 ba6 10.Nc6 Qc8 11.Rb1 Qb7 12.Nd4 c5; 7...h5 8.Nd4 Bd7 9.Be2 e5 10.Nf3 Bd6 11.0-0 0-0 12.h3 Qe7; 7...g6 8.Be2 Bg7 9.Nd4 0-0 10.Nf5 gf5 11.0-0 ab5 12.ab5 Nbd7; 7...Bg6 8.Bd3 e6 9.0-0 Bd3 10.cd3 Nbd7 11.Qb3 Bd6 12.d4 0-0; 7...Qc8 8.Nd4 e5 9.Nf5 Qf5 10.Bd3 e4 11.Be2 Bd6 12.0-0 0-0) 8.Nd4 Bg6 9.Be2 Bd6 10.h4 h5 11.0-0 0-0 12.Re1 c5.

6.Nc3 Qd6 A) 7.Be2 Nbd7 (7...e5 8.a4 d4 9.ed4 ed4 10.Nb1 Qb4 11.Bd4 Nbd7 12.0-0 0-0-0; 7...g6 8.Nd4 Bg7 9.g4 Bd7 10.Bf3 Bh6 11.a4 0-0 12.Ba3 Qe5; 7...e6 8.Nd4 Nbd7 9.a4 Nc5 10.0-0 Be7 11.Nf5 ef5 12.d4 Nce4) 8.0-0 g6 9.Nd4 Bg7 10.g4 e5 11.Nf5 gf5 12.gf5 0-0-0; B) 7.Bd3 Bd3 (7...Bg4 8.h3 Bf3 9.Qf3 Nbd7 10.0-0 e6 11.a4 Ne5 12.Qe2 Be7) 8.cd3 Nbd7 9.0-0 e5 10.Qc2 Be7 11.a4 Qe6 12.a5 0-0; C) 7.Nd4 Bg6 8.Bd3 Nbd7 9.a4 Nc5 10.Ba3 Nd3 11.cd3 Qd8 12.Qc2 e5; D) 7.a4 e5 (7...c5 8.Bd3 Bg4 9.h3 Bf3 10.Qf3 Nbd7 11.Be2 Ne5 12.Qf4 0-0-0) 8.Bd3 Bd3 9.cd3 Nbd7 10.0-0 Qe6 11.e4 de4 12.Ne4 Bd6.

6.Nc3 Nbd7 A) 7.Nh4 Bg4 (7...Bg6 8.Be2 e6 9.0-0 Bd6 10.f4 0-0 11.f5 ef5 12.Nf5 Bf5) 8.Be2 Be2 9.Qe2 e6 10.0-0 Bd6 11.Nf3 Nc5 12.Ba3 Nce4; B) 7.Be2 e5 8.0-0 Bd6 9.Bd3 Bd3 10.cd3 0-0 11.Qc2 a6 12.h3 Qe7.

6.Nc3 e6 7.Be2 (7.Nd4 Bg6 8.h4 e5 9.Nf3 Nbd7 10.h5 Bf5 11.Be2 Bd6 12.h6 gh6; 7.Nh4 Bg4 (7...Bg6 8.Ng6 hg6 9.Be2 Nbd7 10.0-0 Nc5 11.h3 d4 12.Nb1 de3; 7...Be4 8.d3 Bg6 9.Be2 Nbd7 10.0-0 Bd6 11.f4 Nc5 12.Bf3 0-0) 8.Be2 Be2 9.Qe2 Nbd7 10.0-0 Bd6 11.Nf3 Nc5 12.Ba3 Nce4; 7.g3 Bd6 (7...Nbd7 8.Bg2 Bd6 9.0-0 Bg6 10.d3 0-0 11.Qe2 Nc5 12.d4 Ncd7; 7...Bg6 8.Ne2 Nbd7 9.Nf4 Bd6 10.Be2 0-0 11.0-0 Qe7 12.Ng6 fg6; 7...Bc5 8.Nh4 Bg4 9.Be2 Bh3 10.Bf1 Bf1 11.Kf1 Nbd7 12.Kg2 0-0; 7...Be7 8.Nh4 Bg4 9.f3 Bh5 10.Ne2 g5 11.g4 gh4 12.gh5 Rg8; 7...Bg4 8.h3 Bf3 9.Qf3 Nbd7 10.Be2 Bd6 11.e4 d4 12.Na4 c5; 7...a6 8.Nd4 Bg6 9.a4 Bc5 10.Be2 ab5 11.ab5 Nbd7 12.d3 0-0) 8.Bg2 0-0 9.Nd4 Bg6 10.0-0 Nbd7 11.f4 Nc5 12.d3 Qd7; 7.h3 Nbd7 (7...Bd6 8.g4 Bg6 9.g5 Nh5 10.Rg1 Nd7 11.Nd4 Bh2 12.Rg2 Be5; 7...Bc5 8.g4 Bg6 9.g5 Nh5 10.Na4 Bd6 11.Be2 a6 12.Nc3 ab5) 8.Nh4 Bg6 9.Be2 Bd6 10.0-0 0-0 11.Ng6 hg6 12.d4 Qe7; 7.Rb1 Nbd7 (7...Bd6 8.Nd4 Bg6 9.h4 e5 10.Nf3 Nbd7 11.h5 Bf5 12.h6 g6; 7...Bg6 8.Ne2 Nbd7 9.Nf4 Bd6 10.Be2 0-0 11.0-0 Qe7 12.Ng6 fg6) 8.Nd4 Bg6 9.h4 e5 10.Nf3 h5 11.Be2 Bd6 12.0-0 0-0) 7...Bb4 (7...Bc5 8.d4 Bd6 9.Nh4 Bg6 10.0-0 a6 11.g3 ab5 12.Nb5 Nc6; 7...Nbd7 8.Nd4 Bg6 9.0-0 Bd6 10.f4 0-0 11.f5 ef5 12.Nf5 Ne5; 7...Bg6 8.0-0 Nbd7 9.Nh4 Bd6 10.f4 0-0 11.f5 ef5 12.Nf5 Ne5; 7...Bd6 8.Nh4 Bg6 9.f4 Nbd7 10.0-0 0-0 11.f5 ef5 12.Nf5 Ne5; 7...Be7 8.Nd4 0-0 9.Nf5 ef5 10.0-0 Nbd7 11.d4 Nb6 12.Bd3 Ne4) 8.Nd4 Bg6 9.0-0 0-0 10.a3 Bc5 (10...Be7 11.f4 Nbd7 12.f5 ef5) 11.f4 (11.Nb3 Bd6 12.f4 Nbd7) 11...Bd4 (11...Nbd7 12.f5 ef5) 12.ed4 Be4 (12...a6 13.a4+=; 12...Qe7+=) 13.g4 h6 (13...Ne8!?=) 14.f5+/- (14.Ne4?! Ne4 15.a4 Qf6=) 14...ef5 15.d3 Ng4 (15...fg4 16.de4 de4 17.Bg4+/-) 16.Bg4 Qg5? 17.de4+- de4 18.Rf5 Qg6 19.Nd5 Re8 20.Nc7 h5 21.Rh5 Nd7 22.d5 Nf6 23.Bf6 gf6 24.Kh1 e3 25.Na8 Qe4 26.Bf3 Qf4 27.d6 Rd8 28.Qg1 (28.Qg1 Qg5 29.Rg5 fg5 30.Qg5 Kf8 31.Qd8 Kg7 32.Rg1 Kh6 33.Qh4) 1–0. usingprogram – kopernik38, internet, 2011.

6.Nc3 Bg6 A) 7.h4 e6 (7...Qd6 8.a4 c5 9.bc6 Nc6 10.Nb5 Qd7 11.Ne5 Qd8 12.h5 Bf5; 7...a6 8.Ne5 Nbd7 9.Ng6 hg6 10.ba6 ba6 11.Rb1 e6 12.Ne2 Bd6; 7...c5 8.Ne2 Nbd7 9.Nf4 e6 10.h5 Be4 11.Ng5 Bd6 12.h6 gh6) 8.Nd4 e5 9.Nf3 Nbd7 10.h5 Bf5 11.Bd3 Bd3 12.cd3 a6; B) 7.Ne2 Nbd7 (7...e6 8.Nf4 Bd6 9.Be2 Nbd7 10.0-0 0-0 11.d3 Qe7 12.Qd2 e5) 8.Nf4 e6 9.Be2 Bd6 10.0-0 0-0 11.d3 Nc5 12.a4 Re8; C) 7.Ba3 Nbd7 (7...e6 8.Bf8 Kf8 9.Bd3 Nbd7 10.0-0 e5 11.Be2 Kg8 12.d4 e4) 8.Be2 e5 9.Bf8 Kf8 10.0-0 Kg8 11.h3 Qe7 12.d4 e4; D) 7.Be2 e6 (7...Nbd7 8.Ba3 e5 9.Bf8 Kf8 10.0-0 Kg8 11.d4 e4 12.Nh4 Nf8) 8.Nh4 Nbd7 9.0-0 Bd6 10.f4 0-0 11.Ng6 hg6 12.Qe1 Nc5; E) 7.h3 e6 (7...Nbd7 8.Ne2 e6 9.Nf4 Bd6 10.Be2 0-0 11.0-0 Qe7 12.a4 Nc5; 7...a6 8.Bd3 ab5 9.Nb5 Nc6 10.Nbd4 Nd4 11.Bd4 e6 12.Qb1 Bd3) 8.Bd3 Nbd7 9.0-0 Nc5 10.Bg6 hg6 11.Qe2 Be7 12.Rfd1 0-0; F) 7.Bd3 Nbd7 (7...e6 8.Qe2 Nbd7 9.0-0 Nc5 10.Bg6 hg6 11.h3 Bd6 12.d3 e5; 7...a6 8.Qe2 ab5 9.Bg6 hg6 10.Qb5 Nc6 11.Qb7 Na5 12.Qb4 Nc6; 7...Qd6 8.a4 c5 9.bc6 Nc6 10.Nb5 Qd8 11.0-0 e6 12.Qe2 Bc5) 8.0-0 e6 9.Qe2 Nc5 10.h3 Bd6 11.Bg6 fg6 12.d3 0-0.

6.c4 c6 7.Be2 e6 8.0-0 Be7 (8...dc4 9.Bc4 Bd3 10.Bd3 Qd3 11.Bf6 gf6 12.Nc3=) 9.a4 Bg4 10.h3 Bf3 11.Bf3 dc4 12.bc6 (12.Qc2!?=) 12...Nc6+= (worse is 12...bc6 13.Na3+=) 13.Qc2 Qd3 14.Qd3 cd3 15.Bc6 bc6 16.Rc1 c5 17.Ra3 c4 (17...Rb8 18.Bf6 Bf6 19.Rd3-/+) 18.Rac3= Rb8 19.Ba3 Ba3 20.Na3 Ne4 21.Rc4 Nd2 22.Rc8 (better is 22.R4c3=) 22...Rc8?? (better is 22...Ke7 23.Rh8 Rh8+=) 23.Rc8+- Kd7 24.Rh8 Nf3 (24...h5 25.Ra8 e5 26.Ra7 Ke6 27.a5+-) 25.Kf1 Ne5 26.Ra8 (26.Rh7 Ke7+-) 26...Kd6 27.Ra7 Kd5 (27...g5 28.f4 gf4 29.ef4+-) 28.Rb7 Kc5 29.Rb5 Kd6 30.a5 Nc6 31.a6 Na7 32.Rb1 e5 33.Nb5 Nb5 1–0. madik – r3tract, gameknot.com, 2013.

6.d3 e6 7.Nbd2 Nbd7 8.a4 Be7 9.e4 (9.Be2 Bg4=) 9...Bg6 (9...de4!? 10.de4 Be4 11.Ne4 Ne4 12.Bg7 Bb4 13.c3 Bc3 14.Bc3 Nc3=+) 10.ed5= ed5 11.Be2 Rb8 12.Bd4 Rc8 (12...a6!?=) 13.Bf6 (13.Bf6 Bf6 14.Ra2=+). opperwezen (2660) - retardedplatypus123 (2425), lichess.org, 2018.

6.d4 Ne4 7.Nbd2 c6 8.bc6 Nc6 9.c4 e6 10.cd5 ed5 11.Bb5 g6 (11...Qa5 12.Qa4 Bb4 13.Qa5 Ba5 14.Ke2=) 12.a4 Bg7 13.Ba3 Nc3? (13...Rc8!?=) 14.Qb3 (14.Bc6!? bc6 15.Qc1 Na4 16.Qc6 Bd7 17.Qd5+-) 14...Nb5+= 15.ab5 Ne7 (15...Na5 16.Qa4+=) 16.0-0+- 0-0 17.Rfe1 (17.Be7!? Qe7 18.Qd5+-) 17...Re8+= 18.Nh4 Be6 19.Nhf3 (19.Rec1+=) 19...Rc8 (19...Bf5 20.Rec1+=) 20.Rac1 (20.Be7!? Re7 21.Ra7+-) 20...Qd7 21.e4?? (better 21.Bc5+=) 21...de4 (better 21...Rc1 22.Rc1 de4–+) 22.Re4 (22.Rc8 Nc8 23.d5 Bd5 24.Qe3–+) 22...Bb3 23.Nb3 Rc1 24.Nc1 (24.Bc1 Qb5 25.Nbd2 Nf5 26.Re8 Qe8–+) 24...Nf5 25.Re8 Qe8 26.g4 (26.Kf1 Qb5 27.Ne2 Qb3–+) 26...Nh6 (better 26...Nd4 27.Nd4 Qe1 28.Kg2 Bd4 29.Nd3 Qe4 30.Kg1 Qg4 31.Kf1–+) 27.h3 (27.b6 ab6 28.Kg2 Qc8–+) 27...Qb5 28.Kg2 Qd5 (28...Qc6 29.Nb3–+) 29.Ne2 (29.Be7 Bd4 30.Ne2 Bg7–+) 29...f5 (better 29...Qa2!? 30.Bc1 Qe2 31.Be3–+) 30.g5 Nf7 31.h4 (31.Bc1 Qc4 32.Kf1 Qc6–+) 31...Nd6 (better 31...Qa2 32.Bc5 Qe2 33.Ba7–+) 32.Bc5 (32.Nf4 Qc6 33.d5 Qd7–+) 32...Ne4 33.Nf4 (33.Neg1 Nc5 34.dc5 Qc5–+) 33...Qc6 (better 33...Qc4 34.Ba7 Qa2 35.Nh3 Qa7 36.d5–+) 34.Kf1 (34.Ba7 Qd6 35.Nh3–+) 34...Nc5 35.dc5 Qc5 (better 35...Qf3 36.Ne2 Qh1 37.Ng1–+) 36.Ke2 (36.Kg2 a5 37.Ne1 Qd4–+) 36...Qb5 (36...Qc2 37.Nd2 Bc3 38.Ng2 Qd2 39.Kf3 Qd3 40.Ne3 Qe4 41.Ke2 f4 42.Kf1 fe3 43.Ke2 ef2 44.Kf2 Bd4 45.Kg3 Qe2 46.Kh3 Be5 47.h5 Qf3 48.Kh4 Qh5) 37.Ke3 a5 (better 37...Qc4 38.Ne2 Qe4 39.Kd2 Qf3 40.h5–+) 38.Ne6 a4 (better 38...Qb3 39.Kd2 Qe6 40.Ne1–+) 39.Ng7 Kg7 40.Nd4 Qb3! 41.Kd2?? (41.Nb3 ab3 Passed pawn) 41...Qb4 42.Kd3 Qd4! 43.Kd4 a3 44.Kc3 a2 (better 44...Kf7 45.Kb3–+) 45.Kb2 a1Q! 46.Ka1 h6 47.Kb2 hg5 48.hg5 Kf7 (48...Kf7–+) 0–1. alessandrocarvalhaes (1935) – jubar13 (1930), lichess.org, 2020.

6.Be2 e6 7.0-0 Bd6 8.d3 0-0 9.Nbd2 Nbd7 10.Rc1 (10.Nh4 Bg6=) 10...Rc8 (10...a6 11.ba6 Ra6 12.e4=) 11.Nb3 h6 12.c4 c6 13.bc6 bc6 14.Nbd4 Bh7 15.Qa4 Nc5 16.Qd1 (worse is 16.Qa7 Bd3 17.Qa3 dc4 18.Rc4 Bc4 19.Bc4 Qc7–+) 16...Re8 17.Nb3 Nb3 18.ab3 Rc7 19.c5 Be7 20.Be5 Rb7 21.d4 Ne4 22.Bd3 f6 23.Bg3 Ng3 24.fg3 Qb8 25.Bh7 Kh7 26.Qd3 Kg8 27.Rb1 Qc7 28.Nd2 e5 29.Qg6 Reb8 30.Rf2 e4 31.Rf4 Bd8 32.Rg4 Kf8 ½–½. Djurisic,D (1990) – Conic,Vidoje, Spring Open, Belgrade SRB, 2009.

6.Bf6 A) 6...ef6 A1) 7.Nc3 Bc5 (7...Bb4 8.Nd4 Bg6 9.h4 c5 10.bc6 Nc6 11.Bb5 0-0 12.Bc6 Bc3; 7...Be6 8.Nd4 Bc5 9.Qh5 0-0 10.Bd3 g6 11.Qh4 Nd7 12.0-0 Ne5) 8.Bd3 Be6 9.0-0 Nd7 10.Nd4 0-0 11.f4 Bd4 12.ed4 f5; A2) 7.Nd4 Bg6 (7...Qd7 8.c4 Bc5 9.Nf5 Qf5 10.cd5 0-0 11.Nc3 Nd7 12.Be2 Qg6; 7...Be4 8.Nc3 Bc5 9.Nb3 Nd7 10.f3 Bf5 11.Nd5 c6 12.Nf4 0-0; 7...Be6 8.Bd3 Bc5 9.Qh5 Bd4 10.ed4 f5 11.Nc3 Qf6 12.0-0 0-0; 7...Bc8 8.Qf3 Be6 9.Bd3 Bc5 10.Nc3 0-0 11.0-0 Qd6 12.Nf5 Qd8) 8.Nc3 Bb4 9.h4 c5 10.bc6 Nc6 11.Bb5 0-0 12.Bc6 Bc3; B) 6...gf6 7.Nc3 e5 (7...Rg8 8.Nd4 Bg4 9.Be2 Bc8 10.g3 e5 11.Nf3 Be6 12.0-0 Nd7; 7...e6 8.Nd4 Bg6 9.Bd3 Bd6 10.Rb1 Nd7 11.0-0 Nc5 12.Qe2 f5) 8.Nh4 Be6 9.Qh5 Nd7 10.Bd3 e4 11.Be2 Rg8 12.Qh7 Rg7.

6.c4 c6 7.a4 e6 8.h3 Bh5 9.Be2 Nbd7 (9...Bf3 10.gf3 dc4 11.Bc4=) 10.0-0 Bf3 11.Bf3 e5 12.d3 Bb4 (12...e4 13.Be2+=) 13.cd5 cd5 14.Qb3 Bd6 15.d4 e4= 16.Be2 Qe7 17.Nc3 Qe6 18.f3 0-0 (18...ef3 19.Rf3 Rc8 20.Bd3+=) 19.f4 (19.fe4 Ne4 20.Bg4 Qe7 21.Nd5 Qe8+-) 19...Bc7 (19...g6!?=) 20.Ba3+= Bd6 21.g4 (21.f5!? Qe7 22.Bb2+=) 21...Ba3=+ 22.Qa3 Nb6 23.a5 Nc8 (23...Nc4 24.Bc4 dc4 25.Rfd1=) 24.Kh2 h6 (24...Ne8 25.Rfc1=) 25.Na4 (25.g5 hg5 26.fg5 Ne8+/-) 25...b6 26.g5 hg5 27.fg5 Nh7 28.Bg4 Qd6 (28...Qg6 29.Bf5 Qh5 30.Nc3 Ng5 31.Bg4+=) 29.Qd6+/- Nd6 30.ab6 ab6 31.Nb6 Ra1 32.Ra1 Nb5 33.h4 f5 34.Bh3 f4 35.Bd7 Nc3 36.Nd5! Ne2?? 37.Be6 Kh8 38.Ne7 (38.Ne7 g6 39.Ra7+-) 1–0. Gimeno Higueras,Roberto (1980) – Garcia Maezo,Rebeca, Cullera Autonomico U16, 2003.

6.c4 Nbd7 7.cd5 Nd5 8.Be2 e5 (8...e6!?=) 9.Ne5+/- Bf5 10.0-0 f6 (10...Ne5 11.Be5 Nb4 12.Nc3+/-) 11.Nf3 Bc5 12.Qb3 N7b6 13.Rc1 Qd6 (13...Bd6 14.Nd4 Bg6 15.Bf3+/-) 14.Nh4+- Be6 (14...Bg6 15.h3 Bb4 16.Ng6 hg6 17.Qc2+-) 15.Rc5! Qc5 16.Ba3 Nb4?? (16...Nf4 17.ef4 Bb3 18.Bc5 Bc4+-) 17.Qe6 Kd8 18.Nc3 (better is 18.Qb3!? N6d5 19.Nc3 a5 20.ba6 Qa5 21.Nd5 Nd5+-) 18...a5 19.ba6! Ra6 (19...Na6 20.Bc5 Pinning (20.Bc5 Deflection); 19...ba6 20.Bf3 Combination) 20.Ba6 Qa5 (20...ba6 21.Nf5 Re8 22.Ng7+-) 21.Bb4 Qb4 22.Rb1 Qh4 (22...Qe7 23.Qe7 Ke7 24.Bb7 Rb8+-) 23.Rb6 Re8 24.Rd6! cd6 (24...cd6 25.Qd6 Mate attack) 25.Qd6 Kc8 26.Nb5 ba6 (26...Qh2 27.Kh2 ba6 28.Qc7) 27.Qc7 1–0. Kupec,Jan (2305) – Heineccius,August, remoteschach.de, 2010.

6.Be2 a6 7.Bf6 gf6 8.ba6 Na6 9.Nc3 e5 10.Qb1 Bc8 11.0-0 =.

6.Be2 c6 7.c4 dc4 8.Bc4 a6 (8...e6 9.h3 Bf5 10.Nd4=) 9.bc6 (9.Ne5!? Be6 10.ba6 Bc4 11.ab7 Ra2 12.Nc4 Ra1 13.Ba1+=) 9...Nc6+= 10.0-0 (10.Qb3!? e6 11.Qb7 Bf3 12.Bf6 gf6 13.gf3=) 10...e6= 11.d4 Bd6 12.Nbd2 Qc7 13.h3 Bf3 14.Nf3 (worse is 14.gf3 b5 15.Bd3 Nb4+=) 14...0-0 15.Bd3 h6 (15...Nb4 16.e4 Be7 17.Re1=) 16.Qc2 Rac8 17.Rfc1 Nb4 18.Qc7 Rc7 19.Rc7 Bc7 20.Bc4 Ne4 (20...Rc8!?=) 21.Rc1 Bd6 22.a3 Nc6 (22...Nd5 23.Bd3 Ndf6 24.Ne5+=) 23.Bd3+/- Nf6 24.Ba6 ba6 25.Rc6 Ne4 26.Ra6 Rb8 27.Rd6?? (better is 27.Bc3!+/-) 27...Nd6+= 28.Bc3 Rb1 29.Kh2 Ne4 30.Bb4 Nf2 31.Kg3 Nd3 32.Bd6 Rb6 33.Be7 Nb2 (33...f5-/+) 34.Ne5 (34.Nd2 Rc6+=) 34...Ra6 (34...Rb3 35.Kf3-/+) 35.Kf3 (35.Bb4 f6 36.Nd7 Nd3+=) 35...Ra4 (35...f6!? 36.Ng4 Kf7–+) 36.g3 (36.Bb4 Ra8=) 36...Nc4 Attacking the isolated pawn on a3 37.Nc4 Rc4 38.Bc5 f6 39.h4 Kf7 40.Ke4 g5 41.hg5 hg5 42.Kd3 Rc1 43.Kd2 (43.Ke2 f5-/+) 43...Ra1 (43...Rg1 44.Bd6–+) 44.Kc2 (44.Ke2 f5-/+) 44...f5 45.Kd3 Ke8 46.Kc4? (better is 46.Ke2!?-/+) 46...Kd7–+ 47.Kb5 Rb1 48.Kc4 Kc6 (48...Rg1 49.Bb4–+) 49.Kc3? (49.Be7 g4-/+) 49...Kd5 (49...Rg1 50.g4–+) 50.Kd3? (better is 50.Be7 g4 51.Bf6-/+) 50...Rb3–+ 51.Kd2 Ke4 52.Be7 (52.a4 Re3 53.a5 Rg3–+) 52...Re3 53.Bg5 Rd3 (53...Rd3 54.Kc2 Ra3–+) 0–1. Fournier,Frederic (2005) – Jakkos (2070), Active, 2004.

6.Be2 Bf3 7.Bf3 e6 8.d4 g6 9.c4+= c6 10.Nc3 Bb4 (10...dc4 11.Qa4+=) 11.Qb3+- Bc3 12.Bc3 0-0 (12...Nbd7 13.0-0+-) 13.0-0 (13.bc6 bc6 14.0-0 Nbd7+-) 13...Nbd7 (13...cb5 14.Qb5 Qd7 15.Rfb1+=) 14.Bb4 (14.Rfc1 Ne4+-) 14...Re8 15.Rac1 a5 16.Bd6 a4 17.Qb4 Nb6 (17...Qb6 18.cd5 Nd5 19.Bd5 ed5 20.bc6 bc6 21.Qb6 Nb6 22.Rc6+-) 18.bc6+- bc6 19.cd5 Nfd5 20.Qc5 Qd7 (20...Nc8 21.Be5+-) 21.e4 Nf4?? (better 21...Nc8 22.ed5 Nd6 23.de6 Qe6 24.Bc6 Rac8+-) 22.Bf4 (22.Qb6?! Qd6 23.Rc6 Qa3+-) 22...Nc8 23.Qc6 Qc6 (23...Ra7 24.a3+-) 24.Rc6 Ne7 25.Rc7 (25.Rc5 Rac8+-) 25...Kg7 (25...Rac8 26.Rfc1+-) 26.Bd6 (26.Rfc1 Ra6+-) 26...Nc8 27.Be5 Kg8 (27...Kf8 28.Rfc1+-) 28.Rfc1 Na7 29.Rb7 Rec8 30.Bc7 h5 (30...Re8 31.d5 ed5 32.ed5+-) 31.d5 ed5 32.ed5 Kg7 (32...Rc7 33.Rcc7 Re8 34.g4+-) 33.d6 Rc7 (33...Rg8+-) 34.dc7 Re8 35.Ra7 Kh6 36.Ra8 Re5 37.c8Q Kg5 (37...Re6 38.Qh8 Kg5 39.Rc5 f5 40.Rf5 Kf5 41.Ra5 Kf4 42.Qd4 Re4 43.Qe4) 38.h4! Kh4 (38...Kh4 39.Qd8) 39.Qd8 g5 (39...f6 40.Qf6 g5 41.Ra4 Re4 42.Re4) 40.Ra4 Re4 41.Re4 1–0. Janek – Vionak, internet free game, 2017.

6.h3 Bh5 =.

7.0-0 a6 8.ba6 ba6 9.c4 dc4 10.Bc4 e6 11.h3 =.

7.0-0 e6 8.h3 (8.a4 Bd6 9.Nc3 0-0 10.h3 Bf3 11.Bf3=) 8...Bh5 9.a4 Bd6 10.c4 dc4 11.Na3 =.

7.a4 e6 8.h3 Bf3 (8...Bh5 9.0-0=) 9.gf3 (9.Bf3 Bd6=) 9...Bd6 (9...a6 10.Rg1+=) 10.a5 (10.f4 0-0=) 10...Qe7 (10...a6 11.ba6 ba6 12.c4+=) 11.Rg1= Rg8 12.d4 (12.c4 dc4 13.Bc4 0-0-0=) 12...b6 (12...0-0-0 13.c4 Bb4 14.Bc3 dc4 15.Bc4=) 13.ab6 cb6 14.c4 (14.Nd2 Bb4+=) 14...dc4 (14...Bb4 15.Bc3=) 15.Bc4 Nd5 (15...Bh2 16.Ba3 Bd6 17.Bd6 Qd6 18.f4+=) 16.Qb3 (16.Bd5 ed5 17.Qc2 Bb4 18.Ke2 Qe6+=) 16...Bb4 (16...N7f6 17.Nd2 Bb4 18.Ba3=) 17.Kf1 (better is 17.Nd2 N7f6 18.Ba3=) 17...Qh4?? (better is 17...N7f6!?=) 18.Rh1?? (18.Bd5 ed5 19.Qb4 Qh3 20.Ke2 Qe6+-) 18...Ne3? (better is 18...Ba5 19.Bd5 ed5 20.Qd5 Rc8+/-) 19.Qe3+- Nf6 (19...Qf6 20.Qe4 Rc8 21.Ra7+-) 20.Qe5 (20.Ra4!? Be7 21.d5 Bc5+-) 20...Ke7 (20...Kd7 21.Ba3 Ba3 22.Na3+-) 21.Qc7 Ke8?? (21...Nd7 22.Ra7 Ra7 23.Qa7 Rc8+-) 22.Ra4 (22.Ra7?! Ra7 23.Qa7 Nd7+-) 22...Be7 (22...Qh5 23.Ke2 Nd5 24.Bd5 Qd5 25.Rb4 Qd7+-) 23.Qc6 Kf8 24.Qa8 Ne8 25.Ra7 Qf4 (25...Bb4 26.Rd7 g6 27.Be6 fe6 28.Ba3+-) 26.Qc6 g5 (26...Bd6 27.Ra8 Ke7 28.Nc3+-) 27.Ra8 (27.Ra8 Kg7 28.Re8 Re8 29.Qe8+-) 1–0. marekt – guest, internet, 2007.

7.a4 Bf3 8.Bf3 e5 9.c4 e4 10.Be2 dc4 11.0-0 Bb4 12.Na3 Qe7 13.Nc4 0-0-0 (13...0-0 14.d3+=) 14.a5+/- Ne5?? Attacking the backward pawn on d2 (better 14...Qe6+/-) 15.Be5+- (15.Ne5?! Rd2 16.Bg4 Kb8+-) 1-0. PEREIRA – Zeitnot, internet, 2021.

7.Ne5 Be2 8.Qe2 Ne5 9.Be5 e6 10.Nc3 Bb4 11.g4 Bc3 12.dc3 (12.Bc3 0-0+=) 12...h6 (12...Nd7 13.Bg3-/+) 13.h4 (13.Qf3 Qe7+=) 13...Ne4 (better is 13...Nd7!? 14.Bg3 Qf6-/+) 14.Bg7= Rh7 15.Bd4 f6 (15...Qd6 16.Qf3=) 16.Rh3 (16.f3 Nd6+=) 16...e5 17.f3 Nd6 18.Bc5 Nc4 19.Qd3 Qd7 20.f4 (better is 20.e4!? c6 21.bc6 bc6 22.Rb1=) 20...e4 21.Qd4 0-0-0 22.Ba7?? (better is 22.Rg3 Qb5 23.Ba7-/+) 22...Qg4–+ 23.Rh1 Qg3 24.Kd1 Qf3 25.Kc1 (25.Ke1 Qh1 26.Ke2 Qf3 27.Ke1 Rg7 28.Qc4 Rg1 29.Kd2 dc4 30.Bd4 Qg2) 25...Qh1–+ 26.Qd1 Qd1 27.Kd1 b6 (27...Rg8 28.a3 Rhg7 29.Ke2 Rg2 30.Ke1 Rg1 31.Ke2 R8g2) 28.a4 (28.Ke2 Rg7 29.Re1 Rg2 30.Kd1 Kb7 31.Bb6 Kb6–+) 28...Kb7 (28...Rg7 29.Bb8 Rdg8 30.Ke2 Rg2 31.Ke1 Rg1 32.Ke2 R8g2) 29.Bb6 Kb6 30.Ke2 Rg7 31.Kf2 Rg4 (31...Rdg8 32.a5 Kb5 33.Rf1 Rg2 34.Ke1 Rc2 35.f5 Rgg2 36.Rf2 Rc1 37.Ke2 Rgg1 38.Rf1 Rgf1 39.a6 Rce1) 32.Rh1 Rdg8 33.Rh2 Rg3 34.Rh1 Ne3 35.Rc1 Rf3 36.Ke2 (36.Ke1 Rg1 37.Ke2 Rg2 38.Ke1 Rf1) 36...Rg2 37.Ke1 Rf1 0–1. dado3 – ross60, Live Game Caissa's Web, 2004.

7.Ne5 Be2 8.Qe2 Ne5 9.Be5 e6 10.0-0 Bd6 11.f4 =.

7.Ne5 Ne5 8.Be5 Be2 9.Qe2 e6 10.0-0 Bd6 11.f4 0-0 12.Nc3 Qd7 (12...Qe7!?=) 13.Bf6+/- gf6 14.Qd3 (14.Qg4 Kh8+/-) 14...Bc5 15.Rf3 Rfd8 16.Na4 Bf8 17.Rh3 h6 18.Qd4 Bg7 19.Rg3 Kh8 (19...Qb5 20.Qf6 Qb1 21.Rb1 Kf8 22.Rg7 Rd7 23.Rh7 Ke8 24.Rh8) 20.Rb1 e5 21.fe5 (21.Qd3 c6=) 21...fe5 22.Qh4 d4 23.Qh5 Qd5 (23...de3 24.de3 a6 25.Nc5=) 24.e4 (24.Rf1 de3 25.de3 f5+=) 24...Qe4 25.Qf7 Rg8 26.Qc4 (worse is 26.Qc7 Rac8 27.d3 Rc7 28.de4 Rc2-/+) 26...b6 (26...Qf4 27.d3= (worse is 27.Qc7 Raf8 28.Rf3 Qd2 29.Rf8 Rf8–+)) 27.Nb2 (worse is 27.Qc7 Rac8 28.d3 Qe2-/+) 27...Raf8 28.Rd1 (worse is 28.Qc7 Qe2 29.Qc4 Qd2-/+) 28...Qf4 (28...c5 29.bc6 Rf6 30.c3+=) 29.Nd3+= (29.Qc7?? Qf2 30.Kh1 Qf1 31.Rf1 Rf1) 29...Qf5 30.Rf3 (worse is 30.Qc7 e4 31.Qc4 ed3 32.Qd3 Qd3 33.Rd3 Rf5–+) 30...Qh5 31.Qd5 (31.Rdf1 Rf3 32.Rf3 Qg5+=) 31...Rf3 32.Qf3 Qf3 33.gf3 c5 34.Kf1 Bf6 (34...a6 35.ba6 Ra8 36.a4+=) 35.Re1= Rg5 36.Re4 Kg7 37.Kf2 Kf7 38.h4 Rf5 39.Kg3 h5 40.c3 Ke6 41.c4 Kd6 42.Re1 Bg7 43.Nf2 Bh6 44.Ne4 Kd7 45.Rg1 ½–½. pierre – kitu, internet, 2008.

7.0-0 a6 8.Ne5 Be2 9.Qe2 Nbd7 10.Nd7 Qd7 11.Bf6 =.

7.0-0 Nbd7 8.d3 (8.h3 Bh5=) 8...Bc5 (8...Bd6 9.Nc3=) 9.Nbd2 0-0 10.a4 (10.c4 a6=) 10...Re8 (10...Bd6 11.c4=) 11.c4 dc4 (11...Bd6 12.Nd4 Be2 13.Qe2=) 12.Nc4+= Bd6 (12...a6 13.Qc2+=) 13.e4 (13.h3 Bh5+=) 13...e5= 14.Re1 (14.a5 a6 15.Nd6 cd6=) 14...Bf3 (14...Qe7 15.d4 Ne4 16.Nfe5 Ne5 17.Ne5 (worse is 17.de5 Bc5-/+) 17...Be2 18.Qe2=) 15.Bf3 Rc8 (15...Bb4 16.Re2+=) 16.Ne3 (16.d4 Qe7+=) 16...c6 (16...Bb4 17.Re2=) 17.Nf5 Bb4 18.Rf1 (18.Re2 cb5 19.ab5 Qb6=) 18...cb5 19.ab5 Nc5 (19...Qb6!?=) 20.d4+= ed4 21.Bd4 (21.Qd4 Qd4 22.Bd4 Nfe4 23.Ng7 Red8+/-) 21...Nce4+= 22.Be4 (22.Ra4 Bc5 23.Be4 Ne4 24.Ng7+/-) 22...Re4= (22...Ne4 23.Ng7 (worse is 23.Bg7 Qd1 24.Rfd1 Rc5-/+) 23...Nf2 24.Nf5+- (24.Bf2?! Qd1 25.Rfd1 Kg7+=; worse is 24.Kf2 Rc2 25.Kg1 Ree2-/+)) 23.Ra4 Bc5 (23...Rc4 24.Ba7 Qe8=) 24.Qa1?? (better is 24.Bc5 Ra4 25.Ne7 Kh8 26.Nc8 Qc8 27.Qa4 Qc5 28.Ra1+-) 24...Bd4+= 25.Nd4 Qb6 26.Nf5 (26.Rd1 Ra8-/+) 26...Ra4 27.Qa4 Re8 28.Qc4 Qe6 29.Qf4 (29.Qe6 Re6 30.Rc1 g6-/+) 29...Qe4 (29...Qe5 30.Qe5 Re5 31.Rd1-/+) 30.Qg5+= Threatening mate: Qxg7 30...g6 31.Nd6 Qe5 32.Qe5 (32.Qg3 Nh5 33.Qa3 Qe7+=) 32...Re5-/+ 33.h3 (33.Ra1 Rd5 34.Nb7 Rb5-/+) 33...Ne8 (33...Rd5 34.Nb7 Rb5 35.Nd6-/+) 34.Nb7 (34.f4 Re6 (worse is 34...Nd6 35.fe5 Nb5 36.Rd1+/-) 35.Ne8 Re8+=) 34...Rb5-/+ 35.Nd8 White gets the initiative 35...Rb6 36.Re1 Nd6 37.Re7 a5 (37...a6 38.Kf1-/+) 38.Ra7+= Rb1 39.Kh2 Ra1 (39...Rb2 40.f4+=) 40.Ra8 (40.Rd7 Ne4+=) 40...Kg7-/+ 41.Ra7 Kh6 (better is 41...a4 42.Rd7 Ne4+=) 42.Rd7+= Rd1? (better is 42...Ne8 43.Nf7 Kg7 44.Ng5 Kg8 45.Rh7 a4+=) 43.Nf7 Kh5 (43...Nf7 44.Rd1 Kg5 45.Kg3+-) 44.Nd6 h6 (44...g5 45.Rh7 Kg6+-) 45.g4 Kh4 46.Nf5! gf5 47.Rd1 fg4 48.Rd4 a4 (48...Kg5 49.Rg4 Kf5 50.Ra4+-) 49.Ra4 (49.Rg4 Kh5+-) 49...Kh5 (49...h5 50.f3+-) 50.hg4 (50.hg4 Kh4 51.Kg2+-) 1–0. Mauron,Regis (1780) – Perodeau,Guillaume, St Quentin op 5th, 2002.

7.Nc3 Bd6 8.0-0 (8.h3 Bf3 9.Bf3 0-0 10.0-0 a6 11.a4=; 8.a4 a6 9.0-0 0-0 10.Re1 Re8 11.h3=; 8.d3 a6 9.0-0 c6 10.a4 0-0 11.h3=) 8...0-0 9.a4 Nbd7 10.h3 Bf3 11.Bf3 =.

7.c4 dc4 8.Bc4 Bc5 (8...a6 9.h3 Bh5 10.0-0=) 9.0-0 a6 10.a4 (10.h3 Bh5=) 10...ab5 11.ab5 Ra1 12.Ba1 0-0 13.h3 Bh5 14.d4 Bb6 15.Nbd2 Nbd7 16.Qb3 Ba5 (16...Qe7 17.g4 Bg6 18.Nh4=) 17.Bb2 Nb6 18.Ra1 Nc4 19.Qc4 (19.Nc4 Bf3 20.gf3 Bb6=) 19...Bb6 (19...Bd2 20.Nd2 Bg6 21.Qc5+=) 20.Ba3 Re8 21.Bc5 Bc5 22.dc5 h6 23.Ra7 Qb8 24.Ra1 Rd8 (24...Qd8 25.e4+=) 25.e4 c6 26.bc6 bc6 27.g3 (27.Qa4 Qb2 28.Rb1 Qc3=) 27...Bf3 28.Nf3 Qb2 29.Ra6 Rb8 30.Rc6 Rb4 31.Rc8 (31.Qd3 Ne4 32.Qe3 Rc4-/+) 31...Kh7=+ 32.Qf1 Ne4 (worse 32...Re4 33.Qd3+=) 33.c6 Ra4 34.c7 Ra1 35.Rh8 Kh8 36.c8Q Kh7 37.Ne1 Qd2 38.Qc2 Re1 (38...Re1 39.Qd2 Rf1 (39...Nd2?! 40.Qe1 Nf3 41.Kf1 Ne1 42.Ke1–+) 40.Kf1 Nd2 41.Ke2 Ne4–+; worse 38...Qe1 39.Qe1 Re1 40.Kg2+=) 0–1. GuestVZXZ – GuestVHSD, freechess.org, 2018.

7.Ne5 Be2 8.Qe2 Bd6 9.0-0 0-0 10.f4 Nbd7 11.d3 =.

7.h3 Bf3 8.Bf3 Bb4 9.a3 Bc5 10.c4 c6 11.bc6 bc6 12.cd5 (12.d4 Bd6+=) 12...cd5= 13.Nc3 0-0 14.0-0 Nc6 (14...Nbd7 15.d4 Bd6 16.Nb5=) 15.Na4 (better is 15.Rc1!? Ne5 16.Nd5 Nd5 17.Rc5+/-) 15...Bd6= 16.Qc2 Ne5 17.Be5 Be5 18.Rab1 Bc7 (18...Bd6 19.Rb3+=) 19.Rfc1= Qd6?? (better is 19...Bd6 20.Rb3 Rc8 21.Qc8 Qc8 22.Rc8 Rc8=) 20.Qc7+- Qc7?! (20...Qa3 21.Nc3 Rfc8+-) 21.Rc7 Ne8 22.Rcb7 (22.Rd7!? Nf6 23.Re7 Rfe8+-) 22...Nd6 23.R7b3 Nc4 24.Rd3 (24.Rd1 Rab8 25.Rc3 Nd6+-) 24...h6 25.Rb4 Ne5 (25...Rfb8 26.e4+-) 26.Rdb3 Nf3 27.gf3 f5 (27...Rfc8 28.d4+-) 28.Nc5 Rf6 (28...Rae8 29.f4+-) 29.Rb8 Rb8 30.Rb8 Kh7 (30...Kf7 31.Rb7 Kg8 32.Ra7+-) 31.Rb7 (31.Nd7 Rf7 32.Nf8 Kg8 33.Ne6 Kh7+-) 31...Rg6 (31...e5 32.Ra7 e4 33.fe4 de4 34.f3+-) 32.Kh2 a5 (32...e5 33.Ra7 Rc6 34.d4+-) 33.Re7 (33.Nd7 h5 34.Nf8 Kh6 35.Ng6 Kg6+-) 33...Rf6 (33...Kg8 34.Ne6 h5 35.d4+-) 34.Re6 (34.Ne6 h5+-) 34...Re6 35.Ne6 Kg6 36.Nf4 Kg5 37.Nd5 g6 (37...Kg6+-) 38.f4 Kh5 39.Kg3 (39.Nf6 Kh4 40.d4 g5 41.d5 a4 42.d6 g4 43.d7 gh3 44.d8Q h5 45.Nd7 Kg4 46.Ne5) 39...g5 40.fg5 (better is 40.e4!? gf4 41.Nf4 Kg5+-) 40...hg5 41.f4 g4 (41...a4 42.d4+-) 42.hg4 (42.h4!? Kg6+-) 42...fg4 43.Nf6 Kg6 44.Ng4 Kf5 45.d3 a4 46.Ne5 Ke6 47.Nc6 Kd5 48.Nd4 Kc5 49.f5 Kd6 50.Kg4 Ke5 51.Kg5 Kd6 52.f6 Kd7 White now must not overlook the idea Nf5 53.Kg6 Ke8 (53...Kd6 54.Nf5 Ke6 55.f7 Ke5 56.f8Q Ke6 57.Qd6) 54.Kg7 Kd7 55.f7 Kd6 56.f8Q Ke5 (56...Kc7 57.Ne6 Kd7 58.Qd8 Kc6 59.Qc7 Kb5 60.Qb7 Ka5 61.Qa7 Kb5 62.Nd4) 57.Qf5 (57.Qc5) 57...Kd6 58.Kf7 Kc7 59.Qe6 (59.Qb5 Kc8 60.Qc6 Kb8 61.Ne6 Ka7 62.Nc5 Kb8 63.Qb7) 59...Kd8 (59...Kb7 60.Qc6 Kb8 61.Ne6 Ka7 62.Nc5 Kb8 63.Qb7) 60.Qe7 (60.Qb6 Kc8 61.Ne6 Kd7 62.Qc7) 60...Kc8 61.Ne6 (61.Nb5 Kb8 62.Qc7 Ka8 63.Qc8) 61...Kb8 62.Nc5 Kc8 63.Qd7 Kb8 64.Qb7 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013. (=1.Nf3 d5 2.b4 Nf6 3.Bb2 Nc6 4.b5 Nb8 5.e3 Bg4 6.Be2 e6)

7.h3 Bh5 8.a4 (8.0-0 Bd6 9.d3 0-0 10.c4 a6 11.Nc3=; 8.Nc3 Bd6 9.g4 Bg6 10.d3 h6 11.Rg1+=; 8.g4 Bg6 9.Ne5 Nbd7 10.Ng6 hg6 11.Nc3=) 8...Bd6 9.0-0 0-0 10.c4 a6 11.cd5 =.

8.a4 0-0 9.Nc3 Nbd7 10.d3 Bf3 11.Bf3 =.

8.Nc3 0-0 9.h3 Bh5 10.a4 a6 11.Re1 =.

8.d3 0-0 9.Nbd2 Qd7 (9...a6!? 10.a4 Nbd7=) 10.Bf6+= Qb5?? (better is 10...gf6 11.c4 dc4 12.dc4 Bf5+=) 11.Nd4+- Be2 12.Qe2 (12.Nb5?! Bd1 13.Bg7 Kg7 14.Rfd1 Be5=) 12...Qa4 (12...Qd7 13.Qg4 g6+-) 13.Qg4 g6 14.Nf5! ef5 (14...Qg4?? 15.Nh6) 15.Qa4 (15…c6 16.Qh4+-) 1–0. Taulien,Hans_Juergen – Yigit,Aydin, remoteschach.de, 2003.

8.Ne5 Be2 9.Qe2 0-0 10.f4 Nbd7 11.d3 =.

8.Ne5 Be5 9.Be5 (9.Bg4?? Bb2 10.Na3 Ba1 11.Qa1 Qd6–+) 9...Be2 10.Qe2 a6 11.a4 (11.ba6 ba6 12.c4 Nbd7 13.Bf6 Nf6=) 11...Nbd7 12.Bb2 0-0 13.c4 dc4 14.Qc4 ab5 15.ab5 Ra1 16.Ba1 b6 (16...Ne8 17.d3=) 17.d4 Ne4 18.Rc1 The backward pawn on c7 becomes a target 18...Qf6 (18...Qh4 19.Qc2=) 19.f3 Ng5?? (better is 19...Nd6 20.Qc7 Qe7+=) 20.Qc7 (better is 20.f4 Ra8 21.Nc3+- (21.fg5?! Qg5 22.Bb2 Qe3 23.Kh1 Rc8+-)) 20...Qd8? (20...Qg6 21.Kf2 (21.Qd7?! Nh3 22.Kh1 Nf2 23.Kg1 Nh3 24.Kh1 Nf2 25.Kg1 Nh3=) 21...Qh5 22.Qd7 Qh2 23.Rc8 Nh3 24.Ke1 Qg1 25.Kd2 Qg2 26.Kc1+-) 21.Bb2 (better is 21.Qd8!? Rd8 22.h4 Nf3 23.gf3 f6+-) 21...Qc7 (better is 21...h6+-) 22.Rc7 Rd8 (22...Nf6 23.Ba3 Rb8 24.h4+-) 23.Na3 (better is 23.h4!? Nf6 24.Rc6 Nd5+-) 23...f5 (23...e5 24.de5 Nc5 25.Bd4+-) 24.Kf2 (24.Nc4 Nf6+-) 24...Nf7 (24...Nf6 25.Rc6+-) 25.Nc4 g5 26.Ba3 h5 Black plans g4 (26...Nf6 27.Nb6 Ne8+-) 27.Be7 Re8 (27...Ra8 28.Rd7 f4 29.Rb7 Ra2 30.Kf1+-) 28.Rd7 g4 (28...Rc8 29.Na3+-) 29.Nd6 (better is 29.Nb6!? gf3 30.gf3 Kg7+-) 29...Nd6 (29...Re7 30.Re7 Nd6 31.Re6 Nb5 32.Rb6+-) 30.Bd6 h4 (30...Ra8 31.Rb7+-) 31.Bc7 Rc8 32.Rd8 Rd8 33.Bd8 h3 (33...Kf7 34.fg4 fg4 35.Bh4+-) 34.g3 Kf8 35.Bb6 Ke8 (35...Ke7+-) 36.fg4 fg4 37.e4 Kd7 38.e5 (38.e5 Ke7 39.Ba5+-) 1–0. Trkn – Pettersson,Goeran, itsyourturn.com, 2000.

8.h3 Bh5 9.Nc3 =.

8.h3 Bh5 9.d3 a6 10.a4 0-0 11.c4 =.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7 8.e3 c6 9.bc6 Bc6 10.Nc3 Nf6 11.Be2 e6 12.0-0 Bd6 13.Nb5 Bb5 14.Bb5 Nc6 15.c4 0-0 16.Qa4 Qc7? (better is 16...dc4!? 17.Rc1 Nb4+=) 17.Bf6+- gf6 18.cd5 ed5 19.Qg4 Kh8 20.Qf5 Qe7?? (better is 20...Kg7+-) 21.Bd3 (21.Bd3 Qe4 22.Be4 de4 23.Qf6 Kg8 24.Qd6 ef3 25.Qg3 Kh8 26.Qf3+-; 21.Qd5?! Ne5+-) 1–0. marcosramos (2360) – kkoushik (2060), net–chess.com, 2007.

5.e3 ab5 (5...Nf6 6.Ne5=) 6.Bb5 c6 7.Be2 Nf6 8.0-0 Nbd7 9.c4 e6 (9...dc4 10.Bc4 Nb6 11.Be2=) 10.Nc3 (10.d4 dc4 11.Bc4 Bd6=) 10...Nb6 (10...dc4 11.Bc4 b5 12.Be2=) 11.cd5 (11.d3 Bd6+=) 11...ed5 12.Qc2 Bd6 13.e4 de4 (13...Be7 14.ed5 Nbd5 15.Nd5 Qd5 16.Bf6 Bf6 17.Bc4+=) 14.Ne4+= Be7 15.Nf6 Bf6 16.Qe4 (16.Rab1 Nd5+=) 16...Qe7= 17.Qe7 (17.Qb1 Bb2 (17...Qe2? 18.Re1 Qe1 19.Qe1 Kd8 20.Bf6 gf6 21.a4+-) 18.Qb2 A) 18...Qe2 19.Rfe1 (19.Qb6?! 0-0=) 19...Qe1 20.Re1 Be6 21.Qb6+-; B) 18...0-0=) 17...Ke7 18.Rab1 Nd5 (18...Na4 19.Bf6 Kf6 20.Rfc1=) 19.Bc4 Bb2 (19...Ra7 20.Rfe1 Be6 21.Bd4 Bd4 22.Nd4=) 20.Rfe1 (20.Rb2 Rd8=) 20...Kd6 21.Rb2 ½–½. Ganesan,Arasu – Svensson,Jan, corr 3GMMsemi–04, 1998.

5.e3 ab5 6.Bb5 Bd7 7.Nc3 d4 (7...e6!?=) 8.Nd4 Bb5 (8...e5 9.Nb3+/-) 9.Ncb5 (9.Ndb5 c6 10.Nd4 Nf6+/-) 9...e5 10.Nb3 Qf6?? (better is 10...Qd7 11.Qe2 c6+/-) 11.Nc7+- Kd8 12.Na8 Nh6 (12...Qa6 13.Nc7! Kc7 14.Be5 Kc8 15.Bg7 Bg7 16.Qg4 Nd7 17.Nc5+-) 13.Qf3 (better is 13.Qe2 Qc6 14.Be5 Qg2 15.Bc7 Ke7 16.Qf1 Qf1 17.Rf1+-) 13...e4 (13...Qf3 14.gf3 Nd7+-) 14.Qf6 (14.Bf6 Be7 15.Qf4 Ke8 16.Qb8 Kd7 17.Qc7 Ke6 18.Qe7 Kf5 19.Qe5 Kg6 20.Qg5) 14...gf6 15.Bf6 Ke8 16.Bh8 Nc6 17.Nb6 (17.Nd4 Nd4 18.Bd4 Bd6+-) 17...Nb4 18.Nd4 (better is 18.Ke2 f5+-) 18...Nf5 19.0-0 (better is 19.Nf5 Nc2 20.Ke2 Na1+-) 19...h5 20.Nf5 Nc2 21.Rab1 (21.Rac1 Bc5 22.Nd5 Kd7 23.Rc2 Kc6 24.Nde7 Kd7 25.Rc5 b5 26.Rd5 Kc7 27.Rc1 Kb7 28.Rd7 Ka6 29.Rc6 Ka5 30.Ra7 Kb4 31.Bc3) 21...Bb4 22.Nc4 h4 23.Rfc1 h3 24.Rc2 Bc5 25.Rb7 hg2 (25...Kd8 26.Bf6 Ke8 27.Ng7 Kf8 28.Rb8) 26.Ncd6 Kf8 (26...Bd6 27.Rc8) 27.Bg7 (27.Rb8) 27...Kg8+- 28.Rc5 Kh7 29.Rf7 Kg6 30.Ne7 Kh7 31.Rh5 1–0. wlittle (2300) – eeethomas (1795), net–chess.com, 2004.

5.e3 c6 6.d4 (6.a4!?=) 6...cb5 7.Nbd2 Bd7 (7...Nf6 8.Bd3=+) 8.Bd3 e6 9.0-0 Bd6 (9...Nf6 10.Qe2=+) 10.a3 (10.e4 Nc6=) 10...Nf6=+ 11.c3 (11.Re1!?=+) 11...0-0-/+ 12.Qc2 Qc7 13.Rfc1 e5?? (better 13...Rc8-/+) 14.de5+- Be5 15.Rab1?? (15.Ne5 Qe5 16.c4 Qh5 17.cb5 Bb5 18.Bb5 ab5 19.Bf6 gf6+-) 15...Bg4?? (15...Bd6 16.a4=+) 16.h3?? (better 16.Ne5 Qe5 17.h3+-) 16...Bf3-/+ 17.Nf3 Qd6?? (17...Nc6 18.Rd1-/+) 18.Ng5?? (18.Ne5!? Qe5 19.c4+-) 18...g6 (18...h6 19.Nf3 Nc6 20.Rd1-/+) 19.Nf3 (better 19.f4+=) 19...Nbd7 20.Kf1 (better 20.Rd1=+) 20...Nc5 (20...Rfe8 21.Kg1-/+) 21.Be2 (better 21.Ne5 Qe5 22.c4+=) 21...Nfe4-/+ 22.Nd4 (22.Kg1 f6-/+) 22...Bd4 23.cd4 Qf6?? (better 23...Qh2 24.Bf3 Nb3 25.Be4 Nc1 26.Rc1 de4 27.Qe4 Rac8 28.Rc8 Rc8-/+) 24.Bf3+= Ne6? (better 24...Na4!? 25.Be4 de4 26.Qe4 Rae8+=) 25.Be4+- de4 26.Qe4 (better 26.d5!? Qf5 27.de6 Qe6 28.Qc7+-) 26...Ng5+- 27.Qb7 Rfe8 (27...Qf5 28.Ke1+-) 28.Kg1 Rab8 (28...Ne4!? 29.Rc2 Nd6+-) 29.Qc6+- Rbc8?? (better 29...Ne4 30.Qf6 Nf6+-) 30.Qf6 Rc1 31.Rc1 (31.Rc1 Ne4 32.Qa6+-) 1–0. Dino_Jarach (1760) – kakeya (1735), lichess.org, 2020.

5.e3 Nf6 6.Ne5 =.

5.a4 Nf6 6.e3 b6 (6...Bg4 7.Be2+=) 7.c4 dc4 (7...a6 8.cd5 ab5 9.ab5 Ra1 10.Ba1 Nd5 11.Ne5+/-) 8.Bc4+/- e6 9.0-0 Be7 (9...a6 10.d3+/-) 10.Nd4 Bc8? (10...c6 11.Qf3 Qc8 12.Qg3 cb5 13.Bb5+/- (13.Qg7?? Rg8 14.Qg8 Ng8 15.Bb5 Na6–+)) 11.Be2 (better is 11.Qf3!? c6 12.bc6+- (< 12.Nc6 Nc6 13.d3 Qc7+/-)) 11...Bb7 12.Bf3 Bf3 13.Qf3 (13.gf3?! a6=) 13...c6 (13...Qd5 14.Qg3+/-) 14.Nc6 Qc8?? (better is 14...Qd5 15.Qd5 ed5+-) 15.Ne7 Ke7 16.Nc3 (better is 16.Qa8 Nbd7 17.Ba3 Kd8 18.Qf3+-) 16...Nbd7 17.Rfc1 Qb8 18.Ne4 (18.Ba3!? Ke8+-) 18...Ne4 19.Qe4 Rg8 (19...f6 20.Rc6 Ne5 21.Ba3 Kf7 22.Bd6+-) 20.Qh4 (better is 20.Ba3!? Ke8+-) 20...Nf6 21.Rc3 (21.d3 Qd8+-) 21...Qb7 (21...g5 22.Qd4 Qd8 23.Qe5+-) 22.Rac1 Rac8 23.Rc8 (23.Qb4 Rc5 24.d4 Nd5+-) 23...Rc8 24.Bf6 gf6 25.Rc8 (25.Rf1!? Qd5 26.d4 h5+-) 25...Qc8+/- 26.Qb4 Ke8 27.Qb2 (27.Qc3!? Qd7 28.d4+-) 27...Qc4+/- 28.g3 (28.Qa1 Qd3+/-) 28...Qa4+= 29.Qf6 (better is 29.d4!?+=) 29...Qb5=+ 30.Qh8 Ke7 31.Qc3 (31.Qh7 a5 32.Qh4 f6 33.Qh7 Kd6=) 31...a6 32.d4 a5 33.Qc7 Kf6 34.Qd8 Kg7 35.e4? (35.d5 Qd5 (35...ed5?! 36.Qg5 Kf8 37.Qd8 Kg7 38.Qg5 Kh8 39.Qd8 Kg7=) 36.Qb6 Qd1 37.Kg2 Qa1-/+) 35...a4 (better is 35...Qb1!? 36.Kg2 Qe4 37.Kf1 Qb1 38.Kg2 Qb5–+) 36.e5-/+ a3 (better is 36...h6!?-/+) 37.Qf6= Kf8 38.Qh6?? (better is 38.Qd8 Kg7 39.Qf6 Kg8 40.Qd8 Kg7=) 38...Ke8–+ 39.Qh7 (39.Qc1 a2 40.Qc8 Ke7 41.Qc7 Qd7 42.Qc3–+) 39...a2 40.Qh8 Kd7 41.Qf8 (41.Qa8 Qb1 42.Kg2–+) 41...a1Q 42.Kg2 Qd5 (42...Qaf1 43.Kf3 Qbe2 44.Kf4 Qc1) 43.Kh3 Qf1 44.Kh4 Qd4 (44...Qe4 45.f4 Qh7 46.Kg5 Qf5 47.Kh4 Q1h3) 45.f4–+ Qfd1 (better is 45...Qc5 46.Qf7 Qe7 47.Qe7 Ke7 48.Kg5–+) 46.Qf7 Kc6 (better is 46...Kc8 47.Qe6 Kb7 48.Qf7 Ka6 49.Qa2 Kb5–+) 47.Qe8 (47.Qe6 Kb7 48.Qf7 Ka6 49.Qc7–+) 47...Qd7 48.Qa8 Kc5 (better is 48...Kb5 49.Qh8 Qe2–+) 49.Qe4 (49.Qf8 Kb5 50.Kg5–+) 49...Qd8 50.Kh3 Qf1 51.Qg2 Qh8 52.Kg4 Qg7 53.Kh4 Qh6 54.Kg4 (54...Qg2 55.f5 Qe4) –+. TIROLOCO – justfish31, Live Game Caissa's Web, 2004.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 e6 9.Be2 Nf6 10.0-0 Bd6 11.c4 (11.Be5 0-0+=) 11...c6 12.Nc3 0-0 13.Qb3 Ne4 (13...dc4 14.Bc4 Qe7 15.d4=) 14.d3 Ng5 15.Nd2 dc4? (better 15...h6+=) 16.Nc4+- (16.dc4?! e5+=; 16.Qc4?! e5=) 16...Be7 17.h4 Nh3 18.gh3 Bh4 19.Kh2 cb5 20.Nb5 Qg5? (20...Na6+-) 21.Rg1 Qb5 (21...Qh6 22.Bg7 Qg7 23.Rg7 Kg7+-) 22.Rg7 Kh8 23.Rf7 e5 24.Ne5 Qa5 (24...Qe5 25.Be5 Bf6 26.Rf8 Kg7 27.Qf7 Kh6 28.Qf6) 25.Ng6 Kg8 26.Rf8 (26.Nh4?! Rf7 27.Bc3 Qg5+/-) 1-0. onur604 (2320) - RafalzLublina (2155), Casual Rapid game, lichess.org, 2021.

5.e3 a6 6.ba6 Na6 7.Be2 Nc5 8.Nc3 (8.0-0 Na4 9.Ba3 Nf6=) 8...c6 (8...Nf6 9.0-0=) 9.0-0 (9.d4 Qb6 10.Qc1 Na6=) 9...Nf6 (9...Bg4 10.Ne5 Be2 11.Ne2=) 10.d3 (10.d4 Nce4=) 10...e6 11.Ne5 (11.d4 Na6=) 11...Bd6 12.f4 0-0 13.Qe1 b5 14.Qg3 b4 (14...Ne8 15.d4 Na4 16.Na4 Ra4 17.Nd3=) 15.Nd1 Ra7 16.Bd4 Rb7 (16...Ne8 17.c3 b3 18.a3=) 17.c3+/- b3 18.Nb2 (18.Nf2 Be7+/-) 18...Be8 (18...Ne8 19.Bc5 Bc5 20.Na4+=) 19.a4 (19.Nf3 Ncd7+/-) 19...Ra7 (19...Nce4!? 20.de4 Ne4 21.Nc6 Ng3 22.Nd8 Ne2 23.Kf2 Rb8 24.Ne6 fe6 25.Ke2 g5+/-) 20.c4+/- Na4?? (better is 20...Be7+/-) 21.Ra4 (21.Ba7!? Nb2 22.c5 Bb8+-) 21...Ra4 22.Na4 Qa5 23.c5 Qa4 24.cd6 b2 (24...c5 25.Bb2 d4+-) 25.d7! Nd7 (25...Bd7 26.Nd7) 26.Nd7 f6 (26...Qd4 27.ed4 Bd7 28.Rb1+-) 27.Nf6 Rf6 28.Bf6 g6 (28...Bg6 29.Bb2 Qb5+-) 29.f5 ef5 30.Qc7 Bf7 31.Qc8 (31...Be8 32.Qe8) 1–0. Trkn – guest767, ICC, 2004.

5.e3 e6 6.Be2 Be7?? 7.Bg7+- Bf6 8.Bh8 Bh8 9.d4 c5 10.bc6 Nc6 11.0-0 e5 12.de5 Ne5 13.Nd4 Qg5 (13...Nf6 14.Nc3+-) 14.f4 Qg6 (14...Qh6+-) 15.fe5 Be5 16.Nd2 Bh3 (16...Qh6 17.N2f3+-) 17.Bb5 Ke7 18.Qf3 Be6 19.Rab1 Qh6 20.h3 Bd4 (20...Nf6 21.Bc6! Rg8 22.Rb7 Kf8 23.Ne6 fe6 24.Nc4+-) 21.ed4 Qd2 (21...Kf8 22.Bd7! Rd8 23.Rb7 Ne7+-) 22.Qa3 Kd8 23.Qf8 Kc7 24.Rf7! Bf7 (24...Bd7 25.Qc5 Kd8 26.Rf8 Be8 27.Re8) 25.Qc5 Kd8 26.Qd6 Kc8 27.Qd7 Kb8 28.Qd8 1–0. guest2176 – guest575, ICC, 2003.

5.e3 e6 6.Be2 Nf6 7.0-0 Bc5 8.Be5 0-0 9.d4 Bd6 10.Nbd2 Be5 11.de5 Ne8 12.c4 f6 13.Qb3 dc4 (13...c6 14.e4 Nc7 15.b6 ab6 16.ef6 Qf6 17.Qb6+=) 14.Bc4-/+ Kh8 15.Rad1 f5 16.Be6+- Bb5?? 17.Qb5 b6 18.Qb1 g6 19.e4 fe4 20.Qe4 Qe7 21.Qa8 Qe6 22.Qb8 Kg7 23.Qa7 Rf7 24.Ng5 Qe5 25.Nf7 Kf7 26.Rfe1 Qf5 27.Nf3 Kf8 28.Re8! Ke8 29.Qb8 Kf7 30.Qc7 Kf6 31.Rd6 Qe6 32.Qd8 Kf5 33.Qg5 Ke4 34.Rd4 1–0. b4_player – uoprgo (1670), GameColony.com, 2002.

5.e3 f6 6.d4 (6.Nc3 e6 7.e4 de4 8.Ne4 f5+-) 6...Bg4 (6...a6 7.a4+-) 7.Bd3 (7.h3 Bh5+-) 7...Qd6 (7...a6 8.h3 Be6 9.a4 ab5 10.ab5 Ra1 11.Ba1+-) 8.0-0+- Nd7 9.c4 dc4 10.Bc4 0-0-0 11.a4 (11.Nc3 e5+-) 11...Qb4 (11...Ne5 12.Ba3 Qb6 13.Be2 Nf3 14.Bf3 Bf3 15.Qf3+-) 12.Qc2 Bf3 (12...Bf5 13.Qf5 Qc4 14.Nbd2+-) 13.Rc1 Bh5 (13...Qd6 14.gf3 Kb8 15.Bg8 Rg8 16.Ba3+-) 14.Bg8 Rg8 (14...Qd6 15.Ba3 Nc5 16.Bc5 Qd7+-) 15.Qc7 1–0. DEFFM – GuestT, freechess.org, 2019.

5.e3 Nf6 6.Nc3 e6 7.Be2 Bb4 8.0-0 0-0 9.a3 (9.a4 Bd6=) 9...Bc3 (9...Bd6!?=) 10.Bc3+= Qe8 (10...Ne4 11.Bb4 Re8 12.d3+=) 11.Rb1 Ne4 12.Be5 Nd6 13.a4 f6 14.Bg3 b6 15.Nd4 e5= 16.Nb3 Nf5 17.Bf3 Ng3 18.fg3 c6= 19.bc6 Bc6 20.d3 Qe6 21.Qe2 Ba4-/+ 22.c4 Bc6 23.Rbc1 Rd8 24.d4 e4 25.Bg4-/+ f5?? 26.Bf5+/- Qd6 27.cd5 Bd5 28.Nd2 a6 29.Be4 Be4 30.Ne4 Qg6? 31.Qf3 Nd7+/- 32.Rc7 h6?? 33.Nc3 Rf8?? 34.Qe4 Rf1 35.Kf1 Qe4 36.Ne4 Rf8 37.Kg1 Nf6+/- (37...Nf6 38.Nf6 Rf6+/-). TriAngel – HaveFun, ICC, 1999.

5.e3 h6 6.a4 e6 7.Be2 c6 (7...Nf6 8.0-0+=) 8.c4 (8.0-0 Nf6+=) 8...dc4= 9.Bc4 cb5 (9...Nf6 10.0-0+=) 10.ab5 Ne7 (10...Nf6 11.Bd4+=) 11.0-0 Nd5 (11...Nf5 12.Ne5+=) 12.d3 f6 (12...Nb6 13.Be5+=) 13.Nc3 (13.Nd4 Qe7+/-) 13...Nc3 14.Bc3 Bd6 15.d4 (15.Nd4 Qe7+/-) 15...Qc7 (better is 15...0-0+/-) 16.e4?? (16.Qb3 Kf7 17.b6+-) 16...Qc4–+ 17.Qd2 Bb5 18.Rfe1 Nd7 19.e5 fe5 20.de5 Be7 21.Rac1 Qd5 22.Qc2 Rc8 23.Qb2?? a6 24.Red1 Qe4 25.Nd4 0-0 26.Ne6?? Rf5 27.Nd4 Re5 28.Nf3?? Rg5 29.Kh1? Rg6 30.Rd4 Qc6 31.Rdd1 Bf6 32.Bf6= (32...Nc5 33.Bd4=+). stoker – wands, Caissa.com, 2004.

4.Bd4+- b6 5.Nc3 A) 5...Nh6 6.Nf3 (6.e3 Nf5 7.Nf3 f6 8.g4 Nh6 9.g5 Nf7 10.gf6 gf6 11.Na4 a6) 6...Nf5 7.e3 f6 8.g4 Nh6 9.g5 Nf7 10.gf6 gf6 11.Nb1 e5; B) 5...Qd6 6.f4 Qf4 7.Nf3 Qf5 8.e3 Nf6 9.Bd3 Qh5 10.0-0 e6 11.Qe1 Bb7.

4.Bd4+- b6 5.c4! dc4 (5...c5 6.bc6 dc4 7.Nf3 Bg4 8.e3 Qd5 9.Nc3 Qc6 10.Ne5 Bd1 11.Nc6 Bg4; 5...c6 A) 6.e3 c5 (6...cb5 7.cb5 f6 8.f4 Bf5 9.Nc3 e6 10.Nf3 Bd6 11.Be2 Ne7) 7.Be5 f6 8.Bb2 e5 9.cd5 Qd5 10.Nc3 Qf7 11.Nf3 Bb7; B) 6.bc6 dc4 7.e3 Qc7 8.Bc4 e5 9.Bc3 Ne7 10.Qh5 Nc6 11.Nf3 g6) 6.e3 Bb7 (6...Nf6 7.Bc4 a6 8.Nc3 ab5 9.Nb5 Bb7 10.Nf3 e6 11.Be5 Bd6) 7.Nf3 (7.Bc4?! Bg2 8.Bf7 Kf7 9.Qh5 g6= 10.Qg4 Bh1 11.Bh8 Nf6) 7...e6 (7...a6 8.Bc4 e6 9.Nc3 ab5 10.Bb5 c6 11.Be2 c5) 8.Bc4 Nf6 9.0-0 Bd6 10.Ne5 Ne4 (10...0-0 11.Qe2+- Nd5) 11.Qg4 Ng5 (11...Qg5 12.Qg5 Ng5 13.f4+-; 11...Qf6+- 3.81) 12.f4 f6 (12...Be5 13.Be5 Ne4 14.Qg7 Rf8+-) 13.Qh5 Kf8 (13...g6 14.Ng6 (14.fg5?! gh5 15.Nf7 Kf7 16.Bf6 Qg8 17.Bh8 Ke8=) 14...hg6 15.Qh8 Kf7 16.Qd8 Nh3 17.gh3 Rd8 18.d3+-) 14.fg5 g6 (14...Be5 15.Be5 Qe8+-) 15.Ng6! Kg8 (15...hg6 16.Qh8) 16.Be6 Kg7 17.Qh6 1–0. Taulien,Hans_Juergen (2350) – Vieira,Marcos (1845), remoteschach.de, 2006.

4.Bd4+- b6 5.e3 a6 A) 6.c4 ab5 (6...Nf6 7.cd5 Nd5 8.Qb3 e6 9.Nc3 Nc3 10.dc3 f6 11.Rd1 Bd6) 7.cd5 b4 8.Qb3 Nf6 9.Nf3 Ra5 10.Bc4 Ba6 11.Ba6 Ra6; B) 6.ba6 c5 (6...Ba6 7.Ba6 Ra6 8.Qe2 Ra5 9.Nf3 f6 10.Bc3 Ra4 11.Bb2 e6) 7.Bb5 Bd7 8.Bd7 Qd7 9.Bb2 Ra6 10.Nf3 Qb5 11.a3 Qb2; C) 6.Nc3 Nf6 (6...e6 7.Nf3 f6 8.e4 de4 9.Ne4 Bb7 10.Nc3 e5 11.Be3 Bb4) 7.Nf3 e6 8.Ne5 Bb7 9.Bd3 Bc5 10.Bc5 bc5 11.ba6 Ba6.

4.Bd4+- b6 5.e3 f6 A) 6.Bd3 Nh6 (6...g6 7.f4 a6 8.Nf3 ab5 9.Bb5 Bd7 10.Be2 Bg7 11.0-0 Nh6) 7.f4 a6 8.Nc3 Nf5 9.Qf3 Nd4 10.ed4 e6 11.Qh5 Ke7; B) 6.f4 a6 (6...Nh6 7.Nf3 a6 8.a4 e6 9.Bd3 Bb4 10.0-0 0-0 11.Qe2 Bd6) 7.Bd3 Nh6 8.Nc3 Nf5 9.Qf3 Nd4 10.ed4 e6 11.Qh5 Ke7.

4.Bd4+- b6 5.e3 Nh6 A) 6.Nc3 Nf5 7.Nf3 f6 8.g4 Nh6 9.g5 Nf7 10.gf6 gf6 11.Na4 e5; B) 6.Bb2 a6 (6...e6 7.Nf3 a6 8.Ne5 Qh4 9.Nc6 Bb7 10.g3 Qg4 11.Be2 Qf5) 7.Nf3 f6 8.Nd4 e5 9.Nc6 Qd6 10.c4 Be6 11.cd5 Bd5; C) 6.c4 Nf5 (6...e6 7.cd5 ed5 8.Qc2 Bd7 9.Nf3 Rc8 10.Nc3 Bf5 11.Qa4 a5) 7.Nf3 Nd4 8.Nd4 Bb7 9.cd5 Qd5 10.Nc3 Qd6 11.Nc6 Bc6.

4.Bd4+- Qd6 5.Nf3 +-.

4.Bd4+- Qd7 5.d3 Qb5 6.Nf3 (6.Nc3 Qa5 7.Rb1 a6+-) 6...f6 7.Nbd2 (7.e3 e5 8.Bc3 Qc6+-) 7...e5 8.Rb1 Qa5 9.Bb2 Qa2 10.e3 Bg4 11.Be2 Bb4 12.0-0 Ne7? (12...a5 13.c3 Bd6 14.Qc2+-) 13.c3 (better 13.Be5 fe5 14.Rb4+-) 13...Bc5 14.d4 e4 (14...Bd6 15.e4+-) 15.dc5 ef3 16.Bf3 Bf5 17.e4 de4 18.Be4 Bd7? (18...Be4 19.Ne4 0-0+-) 19.Re1 Qa6 (19...Rb8 20.c4 Qa5 21.Bd5+-) 20.Qh5 g6 21.Bg6 Kd8 22.Re7! Ke7 23.Re1 Be6 (23...Kd8 24.c4 Rb8+-) 24.Bf5 Kd7 (24...Rad8 25.Nf3 Rd5+-) 25.Re6 c6 26.Qf7 Kc8 27.Re8 1–0. GuestBFQC – mTsHyMiE, freechess.org, 2017.

4.Bd4+- Qd7 5.e3 e6 6.Qg4 (6.Nc3 Ne7+-) 6...Nh6 7.Qh3 (7.Qh5 Nf5+-) 7...Nf5 8.Nf3 Nd4 9.Nd4 (9.ed4 Bd6+-) 9...Bc5 (9...Qd8 10.Qg3+-) 10.Nb3 Be7 11.d4 Bb4 (11...a6 12.ba6 b6 13.c4+-) 12.c3 Be7 13.Bd3 c6 14.bc6 bc6 (14...Qc6 15.Qf3+- (15.Bh7?! e5 16.g4 e4+-)) 15.0-0 0-0 (15...a5 16.Qg4 (16.Bh7?! g6+-) 16...0-0 17.c4+-) 16.N1d2 (16.Qh7) 16...Qc7 (16...h6+-) 17.Qh7 1–0. Trkn – S.M.K>999, itsyourturn.com, 2001.

4.Bd4+- Bd7 5.e3 f6 (5...e6 6.Nc3+-) 6.Qh5 g6 7.Qd5 c6 8.Qb3 cb5 9.Bb5 Rc8 (9...e5 10.Bc4 Nh6 11.Bb2+-) 10.Bd7 (10.Ba7 Bb5 11.Qb5 Qd7 12.Qd7 Kd7+-) 10...Qd7 11.Nf3 b6 12.0-0 e5 13.Bb2 h5 14.d3 Ne7 15.Nbd2 Bh6 (15...g5 16.Ne4 Bg7 17.d4+-) 16.Ne4 f5 (16...Bg7+-) 17.Nf6 Kd8 18.Nd7 Kd7 19.Ne5 Kd6 20.Nf7 Kd7 21.Nh8 Rh8 22.Bh8 f4 23.Qb5 (better is 23.ef4!? Bf4 24.Qa4 Nc6 25.Qf4 h4+-) 23...Kc7 24.ef4 Bf4 25.Qc4 Kb7 26.Qf4 Nd5 27.Qf7 Kc6 28.Qg6 Kc5 29.d4 Kc4 30.Qc6 Kb4 31.Qd5 (31.Rfb1 Ka5 32.Qb5) 31...a5 (31...b5 32.Rab1 Kc3 33.Qb3 Kd2 34.Qd3) 32.Qb3 1–0. Valpa – Nichju, playchess.de, 2006.

4.Bd4+- e5 5.Be5 d4 (5...Bg4 6.h3 Bf5 7.Nc3+-) 6.Nf3 Bg4 7.c3 (7.Nd4?! f6 8.Bc7 Qc7+-) 7...Bf3 (7...dc3 8.Nc3 f6 9.Bg3+-) 8.ef3 d3 (8...dc3 9.dc3 Qe7 10.Qe2+-) 9.Qa4 Qd5 (9...Qe7 10.Qe4 0-0-0 11.Bd4+-) 10.Bc7 Nf6 (10...Bc5 11.Qe4 Qe4 12.fe4+-) 11.b6 Nd7 (11...Ke7 12.ba7 b5 13.Qf4+-) 12.ba7 (12.Qe4 Qe4 13.fe4 a6+-) 12...Bc5 (12...b5 13.Qe4 Qe4 14.fe4 Ra7 15.Bf4+-) 13.Qe4 Qe4 14.fe4 0-0 (14...Ra7 15.Bd3 Ke7 16.Bb5+-) 15.Bd3 Rfc8 16.Bf4 Nf6 17.Ke2 (17.e5 Nd5 18.Bg3 Ra7+-) 17...Ra7 18.f3 Nh5 19.Be3 Be3 20.Ke3 g5 21.g3 Nf6 22.a4 b6 (22...Ra5 23.Bb5+-) 23.Bb5 Re7 (23...Ne8 24.h4 Nc7 25.Na3 gh4 26.Rh4 Nb5 27.Nb5+-) 24.c4 g4 25.d3 (25.d4 gf3 26.e5 Ne8+-) 25...gf3 26.Kf3 Rd8 27.c5! bc5 28.a5 Rb7 29.Bc4 Nd7 30.Kf4 Kg7 31.a6 Ra7 32.Nc3 Nb6 33.Nb5 Raa8 34.a7 h6 (34...Rd7 35.Ra6 Nc4 36.dc4+-) 35.Nc7 Rac8 36.Nd5 Na8 37.Rhb1 Rd7 38.Ra6 f5 (38...Rf8+-) 39.ef5 Rcd8 40.Rb8 Rd5 41.Rg6 Kh7 42.Bd5 Rd5 43.Ra8 Rd4 44.Ke5 Ra4 45.Rb6 1–0. Sternik,Ryszard – Preston,William, corr MCO, 1997.

4.Bd4 f6 5.e3 (5.f4 Nh6+-) 5...Qd6 (5...e5 6.Bc3+-) 6.c4 (6.Bb2 e5+-) 6...e5 7.Bb2 c6 (7...Be6 8.Ba3 Qb6 9.Bf8 Kf8 10.cd5 Bd5 11.Nc3+-) 8.a4 (8.bc6 bc6 9.Ba3 Qe6+-) 8...d4 (8...Ne7 9.d4+-) 9.Nf3 (9.ed4 ed4 10.Bd3 Ne7+-) 9...Bg4 (9...de3 10.fe3 e4 11.Nh4+-) 10.Be2 (10.h3 Bf3 11.Qf3 0-0-0+-) 10...Bf3? (better 10...d3 11.Bf1 e4+-) 11.Bf3 (11.gf3?! d3 12.Bf1 Qd7+-) 11...d3 (11...de3 12.fe3 Ne7 13.0-0+-) 12.bc6 (12.Be4 Ne7 13.Ra3 Qe6+-) 12...bc6 13.Ba3 Qe6 14.Bf8 (14.Be4 Ba3 15.Na3 f5 16.Bd3 Nf6+-) 14...Kf8 15.Qb3 (15.Nc3 f5 16.e4 f4+-) 15...e4 16.Qb4 (16.Bd1 f5+-) 16...Ne7 17.Bh5?? (17.Bd1 Kf7+-) 17...g6?? (better 17...Qe5 18.0-0 Qh5+= (18...Qa1?? 19.Nc3 Qf1 20.Kf1+-)) 18.Bd1+- Kg7 19.Nc3 Rab8 (19...Rhe8 20.f3 Rab8 21.Qc5 ef3 22.Bf3+-) 20.Qc5 Rb7 (20...Rhe8 21.Qa7 Qc4 22.a5+-) 21.0-0 (21.Qd4 Re8 22.Qe4 Qd7+-) 21...Rb2 (21...Re8 22.f3 ef3 23.Bf3+-) 22.Ra2 (22.Qd4 Qe5 23.Qe5 fe5 24.Ne4 Rd8+-) 22...Rb7 (22...Ra2 23.Na2 Rb8 24.Qa7+-) 23.Qd4 Nf5 24.Qe4 Re7 (24...Qe4 25.Ne4 Rb4 26.Nc5 Rc4 27.Nd3+-) 25.Qd3 c5 (25...Rd7 26.Qe4 Qe4 27.Ne4+-) 26.Bg4 Rd7 (26...Rb7 27.Nd5 Re8 28.Rb1 Rb1 29.Qb1+-) 27.Bf5 (27.Nd5 Re8+-) 27...Qf5 28.Qf5 gf5 29.Re1 (29.Rb2 f4+-) 29...Rhd8 (29...Rb8 30.Nd5+-) 30.Re2 (30.Nd5!? Rb8+-) 30...Rd3 (30...Rb7+-) 31.a5 (better 31.Nd5+-) 31...Rc3+- Do you see the mate threat? 32.g3 (32.dc3 Rd1 The nicest combinations are those leading to mate) 32...Rc4 33.d3 (better 33.Rb2!? Rd7 34.d3+-) 33...Rd3+= 34.f3 (34.Rec2 Rc2 35.Rc2 Rd5+=) 34...Rcc3 (34...a6 35.Kf2=) 35.Kf2 (35.Rab2 Kg6 36.Rb7 a6+=) 35...c4 (35...Ra3 36.a6=) 36.Ra4 (36.Rab2 Rd7+=) 36...Rd7 37.Kg2 (37.Rb4 Kg6=) 37...Rc1=+ 38.e4 (38.Kf2 c3 39.Raa2 Rh1=+) 38...fe4 39.Re4 The isolani on c4 becomes a target 39...c3 40.Rec4 c2 41.Ra2?? (better 41.Kh3-/+) 41...Rd5 (41...Rd2 42.Kh3 Rh1 43.Kg4 h5 44.Kf5 Rd5 45.Ke4 Re5 46.Kd3–+) 42.a6?? (better 42.Rac2 Rc2 43.Rc2 Ra5 44.g4=) 42...Rdd1 (better 42...Rd2 43.Kh3 Rh1–+) 43.Rac2+- (43.Rcc2?! Kg6+-) 43...Ra1 44.Rc7 Kg6 45.Ra7 h5 (45...Rd6 46.Rcc7+-) 46.Kh3 (better 46.Ra8 Kf5+-) 46...Kg5? (better 46...Rd6+-) 47.f4 Kg6 48.g4 (better 48.Ra8 Rd7 49.Kh4+-) 48...hg4? (better 48...Ra3 49.Kg2 hg4 50.f5 Kf5 51.Rf2 Kg6=) 49.Kg4+- Rg1 (49...Rd6!?+-) 50.Kf3+- Ra3 51.Kf2 (51.Ke4!? Re1 52.Kd5 Kf5+-) 51...Rg4 (51...Rga1 52.Rc5+-) 52.Rc4 Kf5 53.Rc6 (53.Rac7!? Ra6 54.R7c5 Kg6 55.h3 Ra2 56.Kf3+-) 53...Rf4+= 54.Kg2 (54.Ke1!?+=) 54...Ra2= 55.Kg1 Rb4 Threatening mate... how? 56.Rc1 Rg4 57.Kh1 Rh4 58.Rc5 Kg6 59.Rcc7 (59.Kg1 Rg4 60.Kf1 Rd4=) 59...Rd4 (better 59...Rhh2!? 60.Kg1 Rhd2 61.Rg7 Kf5-/+) 60.Rg7 Kf5 61.Rg1 Rh4 Threatening mate: Rhxh2 62.Rf1 Kg6 63.Rg1 Kh6 64.Rg2 Raa4?? (better 64...Ra1!? 65.Rg1 Ra2=) 65.Rf2 (better 65.Ra8 Kh7 66.Rd2+-) 65...Kg6 66.Ra8 (better 66.Rb2+=) 66...Kf7 (better 66...Ra1 67.Kg2 Rha4=) 67.Rb2+- f5 (67...Ra1 68.Kg2+-) 68.a7 f4?? (68...Ra1 69.Kg2 Rg4 70.Kf3 Ra3 71.Kf2 Rf4 72.Ke2 Re4 73.Kf1 Rf4 74.Ke1 Re4 75.Kd1 Re7=) 69.Rb7+- Kg6 (69...Ke6 70.Re8 Kd5+-) 70.Rb6 (70.Rg8 Kf6 71.a8Q Ra8 72.Ra8 Kf5+-) 70...Kg5?? (better 70...Kh7+-) 71.Rb7 (71.Rg8 Kf5 72.Rb5 Ke6+-) 71...Kg4?? (71...Kg6 72.Rg8 Kf6+-) 72.Rg8+- Kf3 (72...Kf5 73.Rb5 Ke6+-) 73.Rb3 Kf2 (73...Ke4 74.Rb4!! Rb4 75.a8Q Kd4 76.Rd8 Ke3 77.Re8 Kd3 78.Qf3 Kc4 79.Qe4 Kb5 80.Rb8 Kc5 81.Rc8 Kd6 82.Rc6 Kd7 83.Qe6 Kd8 84.Rc8) 74.Ra3 (74.Rg2 Ke1 75.Rb1) 74...Ra3=+ The mate threat is Ra1 75.Rg2?? (better 75.a8Q Ra8 76.Ra8=+) 75...Ke3 76.Rg7 (76.Rb2 f3 77.a8Q Ra8 78.Rb3 Ke4 79.Rb4 Kd5 80.Rb1 Ra2 81.Rb5 Kc4 82.Rg5 Rhh2 83.Kg1 f2 84.Kh2 f1Q 85.Kg3 Rg2 86.Kh4 Qh1) 76...f3 77.Re7 (77.Rg8 Ra1 78.Rg1 Rg1 79.Kg1 Rg4 80.Kh1 f2 81.h3 f1Q 82.Kh2 Rg2) 77...Kf2 78.Rb7 (78.a8Q Ra8 79.Re1 Rh2 80.Kh2 Rh8) 78...Ke2 (78...Ra1 79.Rb1 Rb1) 79.Rb2 (79.Re7 Kf1 80.Rb7 f2 81.Rb1 Ke2 82.Rb2 Ke3–+) 79...Kd1 (79...Ke3 80.a8Q Ra8 81.Rb3 Ke4 82.Rb4 Kd5 83.Rb5 Kc4 84.Kg1 Kb5 85.Kf2 Rh3 86.Ke3 Re8 87.Kd3 f2 88.Kd4 f1Q 89.Kd5 Qd3) 80.Rb1 Kc2 81.Rf1 (81.a8Q Ra8 82.Rf1 Rh3–+) 81...Rh3 82.Rf2 Kb3 83.Rf1 (83.Kg1 Ra7 84.Rf1 Kc3–+) 83...Ra7 (83...Ra2 84.Rb1 Kc4 85.Rc1 Kd4 86.Rd1 Ke5 87.Rd5 Ke6 88.Rg5 Rhh2 89.Kg1 f2 90.Kh2 f1Q 91.Kg3 Rg2 92.Kh4 Qh1) 84.Rb1 (84.Kg1–+) 84...Kc2 85.Rf1 Kb2 (85...Re7 86.Kg1 Kd2 87.Rb1 Re1 88.Kf2 Re2 89.Kf1 Rhh2 90.Rb2 Ke3 91.Rb3 Kf4 92.Rb4 Kg3 93.Rg4 Kg4 94.Kg1 f2 95.Kh2 f1Q) 86.Rf2 (86.Kg1–+) 86...Kc3 87.Rf1 Rah7 (87...Ra2 88.Rc1 Kb3 89.Rb1 Ka3 90.Kg1 Rg2 91.Kf1 Rhh2 92.Ra1 Kb2 93.Ra2 Ka2 94.Ke1 Rh1) 88.Rf2 (88.Kg1–+) 88...Kd3 89.Kg1 Ke3 90.Rf1 Rh2 91.Re1 Kf4 92.Rf1 (92.Re4 Ke4 93.Kf1 Ke3 94.Ke1 Rh1) 92…Rg2 0–1. cardinal8 – kswan, gameknot.com, 2018.

4.e3?? Nf5= 5.Bd3 Nh4 6.Qh5 (6.g3 Ng6 7.h4 Qd6 8.Nf3 Bg4 9.h5 Bf3 10.Qf3 Ne5 11.Be5=) 6...Ng6 7.Nf3 Nf6 8.Bf6 gf6 9.0-0 e5 10.Bf5 Bf5 11.Qf5 =.

4.e3?? Nf5= 5.Be2 A) 5...f6 6.Nf3 (6.d4 Nh4 7.Bd3 g6 8.g3 Nf5 9.c4 dc4 10.Bc4 Nd6 11.Bd3=; 6.Ba3 Nh4 7.Bd3 g6 8.g3 Nf5 9.Nf3 e5 10.Bf8 Kf8 11.e4=; 6.f4 a6 7.Nf3 ab5 8.Bb5 c6 9.Bd3 Ngh6 10.0-0 e6 11.Nc3=; 6.c4 e5 7.Nc3 d4 8.ed4 ed4 9.Ne4 d3 10.Bf1 Nh4 11.Qh5+=) 6...e5 7.0-0 Bd6 8.d3 Be6 9.c4 c6 10.Nbd2 dc4 11.dc4=; B) 5...Nf6 6.Nf3 e6 7.0-0 Bd6 8.Be5 0-0 9.d4 a6 10.Nc3 Ne4 11.Qd3=; C) 5...e6 6.Nf3 Nf6 7.0-0 Bd6 8.Be5 Nh4 9.Bd6 Nf3 10.Bf3 Qd6 11.d4=; D) 5...Nh4 6.g3 Ng6 7.Nf3 Bh3 8.c4 e6 9.cd5 ed5 10.Nc3 Be7 11.Qc2=.

4.e3?? Nf5= 5.Nf3 e6 (5...Nf6 6.a3 (6.Be2 e6 7.0-0 Bd6 8.Be5 0-0 9.d4 a6 10.Nc3 Ne4 11.Qd3=; 6.Nc3 Qd6 7.Bd3 e5 8.e4 de4 9.Ne4 Ne4 10.Be4 Qb4 11.Bf5=; 6.Be5 Ne4 7.d3 Ned6 8.d4 f6 9.Bf4 g5 10.Bd6 Nd6 11.Nc3=; 6.Bd3 e6 7.0-0 Bd6 8.Bf5 ef5 9.Bd4 0-0 10.Nc3 Be6 11.d3=) 6...e6 7.Bd3 Bd6 8.0-0 0-0 9.Nc3 Bd7 10.Qe2 c5 11.bc6=; 5...f6 6.d4 (6.Ba3 Nd6 7.Nc3 e6 8.Be2 Ne7 9.0-0 e5 10.Bb4 Be6 11.a4=) 6...Nd6 7.Nc3 e6 8.Bd3 Qd7 9.0-0 Ne7 10.a4 Ng6 11.Re1+=; 5...Nd6 6.a4 (6.Nc3 Nf6 7.Be2 Bg4 8.0-0 e6 9.Ne5 Be2 10.Qe2 Be7 11.a3=; 6.Na3 Nf6 7.Be2 Bg4 8.0-0 e6 9.d3 Be7 10.c4 a6 11.Qb3=; 6.Be2 Bg4 7.0-0 e6 8.Nc3 Bf3 9.Bf3 Nc4 10.Rb1 Bd6 11.Ba1=) 6...Nf6 7.Be2 Bg4 8.Bf6 ef6 9.0-0 Be7 10.Nd4 Be6 11.a5+=) 6.Be2 (6.Bd3 Nf6 7.0-0 Bd6 8.Be5 Nh4 9.Bd6 Nf3 10.Qf3 Qd6 11.Nc3=; 6.Nc3 Nf6 7.Bd3 Bd6 8.e4 de4 9.Ne4 Be7 10.0-0 0-0 11.Nf6=; 6.a3 Nf6 7.Bd3 Bd6 8.0-0 0-0 9.Nc3 Bd7 10.Qe2 c5 11.bc6=) 6...Bd6? (better is 6...Nf6= 7.0-0 Bd6 8.Be5 0-0 9.d4 a6 10.Nc3 Ne4 11.Qd3=) 7.g4+- Ne3 8.de3 f6 9.c4 Ne7 10.Nc3 Bb4 (10...c6 11.Rg1+-) 11.Qb3 Bc3 12.Bc3 e5 13.cd5 Nd5? (13...Qd5 14.Qa4 Qf7+-) 14.Rd1 c6 (14...Be6 15.e4 c6 16.bc6 bc6 17.ed5 cd5 18.g5+-) 15.e4 Be6 16.ed5 (16.bc6 bc6 17.ed5 cd5+-) 16...cd5 17.h3 (17.Bc4 Qc8 18.Bd5 Bd5 19.Rd5 Qg4+-) 17...Qb6 (17...Rc8 18.g5!+-) 18.Bb4 0-0-0 (18...Rc8 19.Qa4+-) 19.Qa3 Rd7 (19...Kd7 20.Rc1 Rc8 21.Bc5+-) 20.Rc1 (20.Ba5 Qd6 21.Rc1 Kb8+-) 20...Kb8 (20...Rc7 21.Kd2 Rc4+-) 21.Bc5 Qc5 22.Qc5 Rc8 23.Qc8 1–0. Piriyev,Maksat – Celik,Mustafa, chessmoon.com, 2011.

4.bc6 d4 5.Nf3 e4 (5...f6 6.c3 dc3 7.Nc3+-) 6.Nd4 Nf6 (6...Bd6 7.Nf5! Bf5 8.Bg7+-) 7.c3 b6 (7...Rb8 8.Qa4 bc6 9.Nc6+-) 8.g3 (8.d3 Bd6+-) 8...Bc5 9.Bg2 0-0 10.0-0 Re8 11.e3 (11.d3 ed3 12.Qd3 Qe7+-) 11...Qd5 (11...Ba6 12.Re1+-) 12.d3 (12.f3 ef3 13.Qf3 Qf3 14.Bf3 Ba6+-) 12...a5 (12...Bd4 13.cd4 Qb5 14.Qd2 Qd3 15.Qd3 ed3 16.d5+-) 13.c4 (13.de4 Ne4 14.Nd2 f5+-) 13...Qd6 (13...Qe5 14.de4 Ne4 15.Nd2 Nd2 16.Qd2+-) 14.de4 (14.Nb5 Qc6 15.Nd2 Rb8 16.Bf6 Qf6 17.Nc7 Rd8+-) 14...Ba6 (14...Ne4 15.Nc3 Nc3 16.Bc3+-) 15.Nd2 (15.Nb5 Qc6 16.e5 Ne4+-) 15...Bd4 (15...Bb4 16.N4b3 Qc6 17.e5+-) 16.ed4 Qb4 17.Qc2 Qe7 (17...Ng4 18.Rfb1+-) 18.f4 (18.e5 Nh5+-) 18...Ng4 (18...Rad8 19.e5 Ng4 20.Rae1+-) 19.Rae1 Ne3 (19...Bc8+-) 20.Re3 Rad8 21.d5 Qc5 (21...Kh8 22.Qc3 Qf8 23.e5+-) 22.Qd3 (22.Qc3!? Qf8 23.Ba3 Re7+-) 22...b5 (22...Qd6 23.e5 Qh6 24.Qf5+-) 23.Rc1 (23.Qc3 f6 24.cb5 Qb5+-) 23...b4 (23...bc4 24.Qd4 Qd4 25.Bd4+-) 24.g4 (24.Nb3 Qe7+-) 24...Qd6 (24...Bc8 25.Bd4 Qe7 26.h3+-) 25.f5 (25.e5 Qe7+-) 25...Qf4 26.Rf1 Qg4 (26...Qg5 27.Rg3 a4+-) 27.Rg3 Qh4 28.Bg7 Qh5 29.Bh6 Kh8 (29...Qg6 30.fg6 fg6 31.Qd4 Re5 32.Qe5 Rd5 33.Qg7) 30.Qd4 1–0. johorean (2100) – brightnight (1730), net–chess.com, 2005.

5.Be5 Bb7 6.d4 f6 7.Bg3 Bd6 8.Bh4 (8.e3!? Ne7+-) 8...Ne7 9.Qd3 0-0 10.Nf3 Qd7 11.g3 (better 11.Bg3!? a5+-) 11...Rae8 12.Ng1 (12.c4 c5 13.cd5 cd4 14.Nd4 Nd5+-) 12...Nf5 (12...g5!? 13.Bh3 Qd8+-) 13.Bh3+- Qe6?? (13...Bc8+-) 14.Bf5 g6 (14...Qe7 15.Bh7 Kh8 16.Bg6+-) 15.Be6 Re6 16.Nf3 (16.g4 Re4+-) 16...Bc8 17.Ng5! Ree8 (17...fg5 18.Bg5 Combination) 18.Nf3 Rf7?? (18...Re6 19.g4 Ree8+-) 19.Qa3! Bb7 (19...Ba3 20.Na3 Combination) 20.Qa7 Bc8 21.Qa8 (better 21.Qa4!? Bd7 22.g4 Rfe7+-) 21...Bd7 22.Qe8! Be8 23.Nc3 (better 23.g4 c5+-) 23...Re7 (23...g5 24.Kd2+-) 24.0-0 (better 24.Bf6 Bb4 25.Kd2 Bc3 26.Kc3 Re2+-) 24...Bb4 25.Na4 Ba5 (25...g5 26.c3 Bd6 27.Bg5 fg5 28.Ng5+-) 26.Rae1! Bb4 (26...Be1 27.Re1 Combination) 27.Rb1 (better 27.Bf6 Re6 28.Rb1 c5 29.dc5 Ba5+-) 27...Bc3 (27...c5 28.Bf6 Re2 29.Nc5 Bc5 30.dc5+-) 28.Rb8 (better 28.Nc3 g5 29.Ng5 fg5 30.Bg5 Re6+-) 28...c5 29.Nc3 Re2 30.Ne2 c4 31.Re8 Kf7 (31...Kf7 32.Ne5! Kg7 33.Re7 Kf8 34.Bf6 c6 35.Rh7 c5 36.Rh8) 0–1. atif_zubair – skj12345, lichess.org, 2019.

5.Be5 Bb7 6.Nf3 Nf6 7.e3 Nd7 8.Bb2 Bc5 (8...Rb8 9.Nc3+-) 9.Be2 (better 9.Bg7 Rg8 10.Bc3+-) 9...Ne5 (9...Rb8+-) 10.Be5 f6 11.Bd4 Qe7 (11...Be7 12.c4 c5 13.Bb2+-) 12.Bc5 Qc5 13.0-0 Bc8 14.d4 0-0 (14...Qd6+-) 15.dc5 (15.dc5 Bb7 16.Nc3+-) 1–0. BeepBeepImAJeep (2740) – TchablobsCRUSHER (1740), lichess.org, 2016.

5.Be5 Be7 1–0. Trkn – ardeeyana, itsyourturn.com, 2001.

5.Be5 f6 6.Bb2 (6.Bg3 Bd6+-) 6...Rb8 7.Bd4 c5 8.Be3 g5 (8...Bd6 9.c3+-) 9.d4 cd4 10.Qd4 Ne7? (10...c5 11.Qa4 Qd7 12.Qd7 Bd7+-) 11.Qf6 (11.Bg5 Bg7 12.Bf6 c5+-) 11...Rg8 12.Ba7 (better is 12.Qc3 Bg7 13.Bd4 Bd4 14.Qd4+-) 12...Rb2 13.Qb2 Nc6 Decoy to b2 14.Qb3 (14.Qb5 Qf6 15.c3 Bf5+-) 14...Be6 (14...Na7 15.Qa4 c6 16.Qa7+-) 15.e3 Na7 16.Qa4 c6 17.Qa7 Rg7 18.Qd4 Rd7 19.Nc3 Bd6 (19...Bg7 20.Qc5 Qf6 21.Nge2+-) 20.Bd3 (20.Nf3 g4 21.Qh8 Bf8+-) 20...h5 (20...Qe7 21.Nf3 g4 22.Ne5+-) 21.Bg6 Ke7 22.Qg7 Bf7 23.Qf7 1–0. Long_Knights – KaiKerling, ChessWorld.net, 2005.

5.Be5 f6 6.Bf4 Bd6 7.Bd6 Qd6 (7...cd6 8.Nf3+-) 8.e3 Ne7 9.Qh5 Ng6 (9...g6 10.Qd1+-) 10.Bd3 0-0 (10...f5 11.Bf5 Bf5 12.Qf5+-) 11.Bg6 hg6 12.Qg6 Qe5 13.d4 Qd6 (13...Bf5 14.de5 Bg6 15.ef6 Rf6 16.c4+-) 14.Nf3 Be6 15.Nbd2 Rab8 16.Nb3 Bf7 17.Qd3 Rb7 (17...Rb6 18.Nc5+-) 18.Nc5 Rb6 19.0-0 Be8 (19...Rfb8 20.Rfe1+-) 20.Qf5 Kf7 (20...Bf7 21.Rfb1+-) 21.a4 Rh8 (21...Kg8 22.Rfb1+-) 22.a5 Rb8 23.Rfb1 Rd8 (23...g6 24.Qd3 Rb1 25.Rb1+-) 24.Nb7 Qd7 (24...Qe7 25.Nd8 Qd8+-) 25.Ne5 Kg8 26.Nd7 Bd7 27.Qf4 Re8 28.Qc7 Re7 29.Qd8 Kf7 30.Qh8 Re8 31.Nd6 Ke7 (31...Ke6 32.Ne8 c5 33.Qg8 Kf5 34.Ng7 Kg6 35.Ne8 Kh6 36.Qg7 Kh5 37.Nf6 Kh4 38.Qg3) 32.Qg7 Kd6 (32...Ke6 33.Nb7 Ra8 34.Nc5 Kf5 35.g4) 33.Rb7 Re7 34.Qf6 Re6 35.Qg7 Re7 36.Qg3 Ke6 37.Qg6 1–0. kamret (2145) – tienguyen2005 (1755), GameColony.com, 2003.

5.Be5 Nf6 6.Bf6 Qf6 7.c3 Bb4 8.Nf3 (8.cb4?! Qa1 9.Nc3 Qd1 10.Nd1 a5+-) 8...0-0 9.e3 (9.cb4?! Qa1 10.Nc3 Qb2+-) 9...Bg4 10.d4 (10.cb4?! Qa1 11.Nc3 Qb2+-) 10...Bd6 11.Be2 c5 (11...Rfb8 12.c4+-) 12.0-0 (12.dc5 Bf3 13.Bf3 Be5+-) 12...cd4 13.cd4 Rab8 14.Nc3 Rb2 15.Nd5 Qf5 (15...Qh6 16.h3 Bh3 17.gh3 Qg6 18.Kh1+-) 16.Nc3 Bb4 (16...Rfb8+-) 17.Na4 Rb8 (17...Re2 18.Qe2 Qa5+-) 18.Nb2 Bc3 19.Na4 (better 19.Rb1 Bb2 20.Qc1 Qc8 21.Rb2 Rb6+-) 19...Ba1 20.Qa1 Qa5 21.Nc3 (21.Rb1 Rb1 22.Qb1 g6+-) 21...Be6 (21...c5 22.Rb1 Rc8 23.Rb5+-) 22.Ne4 (22.Ne5 Rb6+-) 22...h6 (22...Qa2 23.Nc3 Qa1 24.Ra1+-) 23.Nc5 g5 (23...Bd5 24.e4 Be6 25.Ne6 fe6 26.Ne5+-) 24.Ne6 fe6 25.Rb1 Rf8 26.g3 (26.Rb5 Qa3+-) 26...g4 (26...Qf5 27.Rb5 Qc2 28.Qb2 Qb2 29.Rb2+-) 27.Ne5 Qd5 28.Bg4 Qe4 29.Bf3! Rf3 Deflection from b8 (29...Qf3 30.Nf3) 30.Nf3 (30.Rb8 Rf8 31.Nd7 Rb8 32.Nf6 Kf7 33.Ne4 Rb6+-) 30...Qf3 31.Rb8 (31.Qc3 Qf7+-) 31...Kf7 32.Qf1 (32.Qc3!? Kg6 33.Qc7 Qf7 34.Qf7 Kf7 35.Rb7 Kf6 36.Ra7 h5+-) 32...Qg4 (32...Qc6+-) 33.Rb7 (33.Rb7 Kf6 34.Qc4+-; better 33.Qb5 Qg7 34.Re8 Kg6 35.Re6 Qf6 36.Rf6 Kf6 37.Qc6 Kf7+-) 1–0. RichardSommer (2020) – Moneywolf (1990), lichess.org, 2020.

4.Be5+- b6 5.Nf3 f6 6.Bb2 e5 7.e3 e4 8.Nd4 Bd7 (8...a6 9.c4 ab5 10.Qh5 g6 11.Qd5 Qd5 12.cd5+-) 9.Be2 (better is 9.Qh5 g6 10.Qd5 Ne7 11.Qe4 Bg7+-) 9...Qe7 10.Ba3 Qf7 11.Bf8 Qf8 12.c4 c5 (12...dc4 13.Bc4 Qc5+-) 13.bc6 Bc8 14.cd5 Ne7 (14...Qc5 15.Nc3+-) 15.Nc3 Bf5 (15...Nf5 16.Ncb5 Kd8 17.c7 Ke8 18.Qc2 Nd4 19.Nd4+-) 16.Nf5 (16.d6 Bc8 17.d7 Bd7 18.cd7 Kd8 19.Ne6 Kd7 20.Nf8 Rhf8 21.Qa4 Nc6 22.Qe4 a6+-) 16...Nf5 17.Ne4 Qb4 18.Nc3 Ne7 19.Qb3 a5 20.0-0 (20.Rb1 Qb3 21.Rb3 Nc8+-) 20...0-0 (20...Rd8 21.c7 Rc8 22.Qb4 ab4 23.Nb5 Nd5 24.Rfc1+-) 21.Rfb1 Qd6 22.Nb5 Qe5 (22...Qb4 23.Qb4 ab4 24.c7+-) 23.d4 Qd5 (23...a4 24.Qb4 Nd5 25.Qf8 Kf8 26.de5 fe5 27.c7+-) 24.Bc4 a4 25.Bd5 Nd5 26.Qd5 (26...Kh8 27.Nd6+-) 1–0. HFlew – Ralf, HCL–T067 playchess.de, 2003.

4.Be5+- Rb8 5.e3 (5.Bd4 Ra8+-) 5...h5 (5...f6 6.Bd4+-) 6.Nf3 a5 (6...Nf6 7.Bd4+-) 7.a4 (better is 7.b6!? cb6 8.Bb8 Bd7+-) 7...f6 8.Bg3 (8.Bc3 e5+-) 8...b6 (8...e5 9.b6! Bg4 10.bc7 Qc7 11.Bb5 Kd8 12.h3+-) 9.c4 (9.d4 e6+-) 9...dc4 (9...e5 10.cd5 g5 11.h3+-) 10.Bc4 (10.Qc2 Nh6+-) 10...Nh6 (10...e5 11.Nc3+-) 11.Qb3 (better is 11.Ne5 fe5 12.Qh5 Kd7 13.Qe5 Rg8 14.Qe6 Ke8 15.Qg6 Nf7 16.Qf7 Kd7 17.Be6) 11...Nf5 (11...e5+-) 12.Bf7 Kd7 13.Qe6 1–0. mtimmermans (1650) – hsoder, net–chess.com, 2003.

4.Be5+- e6 5.e3 Nf6 (5...f6 6.Bg3+-) 6.Qf3 (6.Nf3 Nd7+-) 6...Be7 (6...Nd7 7.Bg3+-) 7.Bd3 (7.Qg3 Nh5 8.Qg4 f6+-) 7...0-0 (7...Bd6 8.Bd6 Qd6 9.Nc3+-) 8.e4 (8.Qh3!? h6+-) 8...de4 9.Be4 Bb4 (9...Ne4 10.Qe4 a6 11.Nc3+-) 10.c3 (10.Bb7 Bb7 11.Qb7 Ng4 12.Bg7 Kg7+-) 10...Bd6 (10...Ne4 11.Qe4 Be7 12.Qd4 Qd4 13.Bd4+-) 11.Qf4 (11.Bf6!? Qf6 12.Qf6 gf6+-) 11...Be5 (11...Qd7 12.a4+-) 12.Qe5 Qd6 (12...Ne4 13.Qe4 Qd7 14.a4+-) 13.Qd6 cd6 14.Bd3 (14.Bc2 Re8+-) 14...b6 (14...e5 15.Be2+-) 15.Nf3 e5 16.Ng5 (16.Be2 a6+-) 16...Re8 Black prepares e4 (16...e4 17.Be2+- (17.Ne4?! Re8+/-; 17.Be4?! Ne4 18.Ne4 Re8+/-)) 17.0-0 (better is 17.Ne4!? d5 18.Nf6 gf6+-) 17...e4 18.Bc2 (18.Be2 h6 19.Nh3 Bh3 20.gh3 Rac8+-) 18...Re5 (18...h6 19.Nh3 Bh3 20.gh3 d5+-) 19.Nh3 (better is 19.f4!? ef3 20.Nf3 Rb5 21.Bb3+-) 19...Bh3+/- 20.gh3 Rg5 21.Kh1 Rh5 (better is 21...Rb5!? 22.f3 ef3+/-) 22.d3 (22.f3 ef3 23.a4 a6 24.ba6 Rh3+-) 22...ed3 (22...Rb5 23.de4 Rb2 24.Na3+-) 23.Bd3 Rh3 24.Rg1?? (better is 24.Be2+-) 24...Rd3–+ 25.Rg2 (25.Re1!?–+) 25...Ne4 26.c4 Rd1 (26...Rf3 27.Rg1–+) 27.Rg1 Rg1 (better is 27...Nf2!? 28.Kg2 Rg1 29.Kg1 Ne4–+) 28.Kg1-/+ Rc8 (28...a6 29.ba6 Ra6 30.f3-/+) 29.Na3 (29.f3 Nc5-/+) 29...Nd2 (29...Nc3 30.Kg2-/+) 30.Rd1 Nc4 31.Nc4 Rc4 32.Rd6 Do you see the mate threat? 32...g6 (32...Kf8 33.Kg2-/+) 33.Rd7 (33.Kg2 Kg7-/+) 33...Ra4 34.Rd8 (34.Rd2 Kg7-/+) 34...Kg7 35.Kg2 (35.Rd2!?-/+) 35...Ra2–+ 36.Kg3 (36.Ra8 Ra5–+) 36...Ra5 37.h4? (37.Ra8 Kf6–+) 37...h5 (37...Rb5 38.Rd4–+) 38.Rd5 (38.Rd7–+) 38...a6 39.f4 f5 (better is 39...Rb5 40.Rd3 a5–+) 40.Rd7 Kh6 41.Kf3? (41.ba6 Ra6 42.Rd3–+) ½–½. Cornaton,Maxence – Robinson,Sean, Calvi FRA, Youth Ch, 2005.

4.Be5+- e6 5.Nf3 Bc5 (5...f6 6.Bb2+-) 6.e3 (better is 6.Bg7 Nf6 7.Bh8+-) 6...Nf6 7.Be2 0-0 8.0-0 Bd7 9.d4 Bb6 10.a4 c5 (10...Ba5 11.Nbd2+-) 11.c3 (11.a5!? Bc7 12.dc5 Ne4+-) 11...c4 12.Bd6 Re8 13.Bb4 a6 14.ba6 Ra6 15.Ne5 Ne4 16.f3 Nf6 17.Nd2 Ba5 18.Ndc4! Bb4 (18...dc4 19.Nd7 Decoy) 19.cb4 dc4 20.Bc4 Ra7 21.e4 (21.Qb3 Bc6+-) 21...Qa8?? (better is 21...Ba4 22.Qd2 Qb6+/-) 22.Nd7 Nd7 23.Bb5 Rd8 24.Bd7 (24.Rc1!? Qb8+-) 24...Rd7 25.d5 e5? (better is 25...ed5 26.Qd4 b6+-) 26.Qb3 b5 27.a5 Ra6 28.Rac1 h6 29.Rc5 Qb8 30.Rfc1 Qa7 31.Kf1 Kf8 (31...Kh7 32.Qc3 Qb8 33.Rc8+-) 32.Qc3 Rg6 (32...Rd8 33.Rc8 Qe7 34.Rd8 Qd8 35.Qe5+-) 33.Qe5 (33.Rc8 Ke7 34.Qe5 Re6 35.de6 f6 36.ed7 fe5 37.d8Q Kf7 38.Qf8 Ke6 39.R8c6 Kd7 40.Rd6) 33...Kg8+- 34.Rc8 Kh7 35.Rg8 (better is 35.Qb8 Qb8 36.Rb8+-) 35...Kg8+= 36.Qe8 Kh7 37.Rc8 Rgd6 38.h4 h5 (better is 38...Rc7!?-/+) 39.g4= Qe3 40.Qh8 Kg6 41.Qh5 Kf6 42.Qf5 Ke7 43.Kg2 Qd2 44.Kg3 Qd4 45.Qg5 Qf6?? (better is 45...Rf6 46.Qc1 Qe5 47.Kg2 Rd8+=) 46.e5+- Qg5 47.ed6 (47.hg5? Rd5 48.g6 fg6–+) 47...Rd6 (47...Kd6 48.hg5 Kd5 49.Rc5 Kd6 50.Rb5+-) 48.hg5 Ra6 (48...Rd5 49.a6 Rd7 50.Rb8+-) 49.Rc5 Kd6 50.Rb5 Ra7 51.f4 g6 52.f5 (better is 52.Kf3 Re7+-) 52...Kd7 (52...Ke5 53.f6+-) 53.Kf4 Kd6 54.Ke4 Ra8 (54...Re7 55.Kd4 Re1 56.Rb6 Ke7 57.a6 gf5 58.gf5+-) 55.Rb6 Kc7 56.d6 Kd7 57.Kd5 Ra7 58.a6 Kc8 (58...Kd8 59.Rb8 Kd7 60.Rb7 Kd8 61.Ra7 Kc8 62.d7 Kd8 63.Kd6 gf5 64.Ra8) 59.b5 Kd8 (59...gf5 60.Kc6 fg4 61.Rb7 Ra8 62.a7 Ra7 63.d7 Kd8 64.Rb8 Ke7 65.Re8) 60.Kc6 Kc8 (60...Ra8 61.a7! Rc8 62.Kd5 Ke8 63.Rb8 Kf8 64.Rc8 Kg7 65.a8Q Kh7 66.Rh8 Kg7 67.Qf8) 61.Rb7 Rb7 (61...Ra8 62.a7 Ra7 63.d7 Kd8 64.Rb8 Ke7 65.d8Q) 62.ab7 1–0. phildo (1870) – rgeorge55, gameknot.com, 2013.

4.Be5+- Bf5 5.e3 e6 6.Nc3 c6 (6...f6 7.Bg3+-) 7.bc6 bc6 8.Rb1 Ne7 (8...f6 9.Bg3 e5 10.d4+-) 9.Rb7 (9.Nb5 Ng6 10.Nc7 Ke7 11.Na8 Ne5 12.Rb7 Kf6+-) 9...d4 (9...a6+-) 10.Nb5! (worse is 10.ed4 f6 11.Bg3 Qd4+-) 10...cb5 (10...Nd5 11.Nd4 f6+-) 11.Bb5 Qd7 12.Rd7 Be4 13.Rd5 Nc6 14.Bc6 Ke7 15.Rd7 Ke8 16.Be4 (16.Qh5 Be7 17.Re7 Ke7 18.Qg5 Kf8 19.Qg7 Ke7 20.Qg5 f6 21.Qf6) 16...Kd7+- 17.Ba8 Bb4 18.Qf3 f6 19.Qb7 1–0. marekt – chaste, gameknot.com, 2001.

4.Be5+- Bf5 5.e3 Nf6 6.Nf3 Nd7 7.Bb2 e6 8.c4 Nc5 9.cd5 Qd5 10.Nc3 Qd6 11.d4 0-0-0 (11...Ne4+-) 12.dc5 Qc5 13.Qb3 Qd6 14.Be2 Be4 (14...Qb4+-) 15.Ne4 Qb4 16.Nc3 Qb3 (16...Bd6 17.Qb4 Bb4 18.Ng5+-) 17.ab3 Bb4 18.0-0 Rd6 (18...f6 19.Ra7 Bc5 20.Ra4+-) 19.Ra7 b6 20.Ra8 Kb7 21.Rh8 Bc3 22.Bc3 h6 23.Ra1 Rd5 (23...Rd1 24.Bd1 c6 25.Be5 cb5 26.Nd4 b4 27.Bf3) 24.Rha8 Rb5 25.Bb5 (25.Bb5 c5 26.R1a7) 1–0. DEFFM – ABKhalDrogo, freechess.org, 2019.

4.f4?? Nc4+= 5.Bd4 Bf5 6.e3 e6 7.a4 c5 8.bc6 bc6 9.Bc4 dc4 10.Nf3 Nf6 11.0-0 Bd6 12.h3 c5 13.Bf6 Qf6 14.c3 (better is 14.Na3+=) 14...0-0 15.Na3 Bd3 16.Rf2 Qg6 17.Nb5 Be7 18.Ne5 Qf5 19.Nd3 Qd3 20.Kh2 Rab8 21.Ra2 a6 22.Na3 Bh4 23.g3 Bf6 24.Qe2 Qe2 25.Re2 e5 26.Nc4 ef4 27.gf4 Rb1 28.Nd6 Rd8 29.Ne4 Bh4? (better is 29...Be7!?+/-) 30.Nc5+- Rd6 31.Rg2 Rd1 32.Rb2 g6 33.d4 Rd5 (33...Rc6 34.a5+-) 34.Na6 g5 (34...Ra5 35.Nc5+-) 35.fg5 Bg5 (35...Rf5+-) 36.h4 f6 37.hg5 fg5 38.e4 Rd6 (38...Ra5 39.Nc5 h6 40.Rb8 Kg7 41.Rb7 Kg6 42.Rb6 Kg7 43.Rgb2+-) 39.Rg5 Kf7 40.Rf2 Ke7 (40...Rf6 41.Rf6 Kf6 42.Rf5 Kg6+-) 41.Rg7 Ke6 (41...Ke8 42.Nc7 Kd8 43.Rf8) 42.Nc5 1–0. Biskup,Izabela (1800) – Grotha,Magdalena, DMO Poland, 2007.

5.Bb2 e5 6.a4 Bc5 7.e3 Ne7 8.Nf3 Nf5 9.Be2 e4 10.Ng1 Nd6 11.Bg4 f5 (11...Nc4 12.Bc3 Bg4 13.Qg4+-) 12.Bh3 (better is 12.Bh5 Kf8 13.Bc3+-) 12...Nc4?? (12...0-0+-) 13.Bg7 Rg8 14.Bb2! h5?? (14...Nb2 15.Qh5 Double attack) 15.Bc3 (better is 15.Qh5 Ke7 16.Qh7 Kf8+-) 15...c6 (15...Qg5 16.Ne2 c6 17.d3+-) 16.bc6 (16.Qh5 Ke7 17.Qh7 Kf8 18.bc6 Qe7 19.Qh6 Ke8 20.Qh5 Qf7 21.Qf7 Kf7+-) 16...bc6 (16...Qg5 17.cb7 Bb7 18.Ne2+-) 17.Ne2 (better is 17.Qh5 Ke7 18.Qh7 Kd6+-) 17...Nb2 (17...Rg5+-) 18.Bb2 1–0. Neumann,Frank – Bortnicker,Cory, OP–2012–0-01987, 2012.

5.Bb2 e5 6.e3 Bc5 7.d4 ed4 8.ed4 Be7 (8...Qe7 9.Be2 Bb4 10.c3+-) 9.Qh5 (9.Bd3 Nh6+-) 9...g6 10.Qf3 Nh6 (10...Bf5 11.c4+-) 11.Bd3 (11.Nc3 c6+-) 11...Bf5 (11...Nf5 12.Nc3 c6 13.bc6 bc6 14.Nge2+-) 12.Ne2 Bg4 (12...Qd7 13.0-0+-) 13.Qe3 (better 13.Qf4 Be2 14.Ke2+- (14.Qh6?! Bd3 15.cd3 Bb4 16.Bc3 Qe7 17.Kd2 0-0-0+-)) 13...0-0 (13...Nf5 14.Qd2 Nd6+-) 14.Qh6 Bd6 (14...f5 15.Bc1+-) 15.Bg6! hg6 (15...hg6 16.Qg6 Double attack (16.Nf4 Decoy)) 16.Qg6 (16.Qg6 Kh8 17.Qg4+-) 1–0. DEFFM – GuestPJTM, freechess.org, 2018.

5.Bb2 e5 6.e3 e4 7.Nc3 (7.c4 c6+-) 7...Nh6 (7...f5 8.Nh3 Nf6 9.Be2+-) 8.Qh5 g6 (8...Nf7 9.Qd5 Qd5 10.Nd5+-) 9.Qd5 Qe7 (9...Be7 10.Bc4+-) 10.Ne4 (better is 10.Qe4 Ng8 11.Bc4+-) 10...Qb4 (10...Bg7+-) 11.Nf6 Ke7 12.Qe5 Kf7 13.Bc4! Qc4 (13...Qc4 14.Qe8 Mate attack) 14.Qe8 Kg7 15.Nd7 Kg8 (15...Qc3 16.Bc3 Kg8 17.Qf8) 16.Qf8 1–0. wesolyPolak (1830) – NN, GameColony.com, 2002.

5.Bb2 e5 6.e3 Be6 7.d4+-.

5.Bb2 e5 6.e3 Be6 7.Nf3 Bd6 8.Be2 Ne7 9.0-0 0-0 10.d4 e4 11.Nfd2 f5 (11...c6 12.Ba3+-) 12.c4 c6 13.c5 Bc7 14.Nc3 (14.Qb3 Qd7+-) 14...Ng6 (14...f4 15.Qb3 Qd7 16.a4+-) 15.a4 (15.f4 Qf6+-) 15...Qh4 (15...Qg5 16.bc6 Nh4 17.g3 bc6 18.Ra3+-) 16.h3 f4 17.Bg4 Rae8 18.Be6 Re6 19.Ne2?? f3+= 20.Nf4?? fg2 21.Ne6? Qh3–+ (22.f4 gf1Q 23.Qf1 Qe6 24.bc6 bc6–+) 0–1. gtate (1960) – mbarker (2145), net–chess.com, 2006.

5.Bb2 e6 6.e3 f5 (6...Ne7 7.c4+-) 7.Qh5 g6 8.Qh3 (better 8.Qe2 Nf6 9.Nf3+-) 8...Ne7 (8...Nf6+-) 9.Bh8 d4 (9...h6 10.Nf3+-) 10.Bd4 (better 10.ed4 h6+-) 10...Ng8 (10...h6 11.Nf3+-) 11.Qh7 Nf6 12.Qg6 Ke7 13.Bf6 (13.Bf6 Kd7 14.Bd8 Kd8 15.Bc4+-) 1–0. DEFFM – GuestYKKD, freechess.org, 2018.

5.Bb2 Bf5 6.e3 c6 (6...Nh6 7.c4+-) 7.Nf3 (7.f4 e6+-) 7...cb5 (7...e5 8.d4 e4 9.Nfd2+-) 8.Nh4 Bd7 (8...Qd7 9.Nf5 Qf5 10.Bb5 Kf7+-) 9.Qh5 g6 10.Ng6! hg6 (10...hg6 11.Qg6 Mate attack) 11.Qg6 1–0. Pierre – Ermani, internet, 2020.

5.Bg3 +-.

4.Qa4 Bd6 5.b5 Nce7 6.c4 +=.

4.Qa4 Bd7 5.b5 Nce7 6.g3 (better is 6.c4!?+=) 6...a6-/+ 7.e3 (7.Nf3 Bb5 8.Qc2 Ng6-/+) 7...Bb5 (7...ab5!? 8.Qb3 c6–+) 8.Bb5-/+ ab5 9.Qb5 c6 10.Qb3 (10.Qb7?? Rb8 11.Qa7 Rb2–+) 10...Ng6 (10...Nf6 11.c4 dc4 12.Qc4-/+) 11.Nf3? (11.Qb7!? N8e7 12.Ba3=) 11...b5 (11...e4 12.Nd4-/+) 12.a4 (12.d3 Nf6-/+) 12...Rb8 (12...ba4 13.Ra4 Rb8 14.Qa2-/+) 13.a5 (13.ab5 Rb5 14.Qc2 e4+=) 13...Ra8-/+ 14.a6 Qb6 15.Qa2 Bd6 (15...e4 16.Nd4 Ne5 17.0-0-/+) 16.0-0 N8e7 17.d4 (17.d3 0-0 18.h4 h5-/+) 17...e4-/+ 18.Nfd2 (18.Ng5 Nf5-/+) 18...0-0 19.f4 (19.f3!? ef3 20.e4-/+) 19...Nf5–+ 20.Re1 Ra7 21.Rc1 (better is 21.Qb3 Ra6 22.Ra6 Qa6 23.Ba3 Ba3 24.Na3–+) 21...Ne3 22.Nf1 (22.Qb3 Ra6 23.Ra6 Qa6–+) 22...Nf1 23.Rf1 Rfa8 24.Ba3 (24.Qb3 Ra6 25.Ra6 Qa6–+) 24...Ba3 (better is 24...Ra6 25.Qb2 b4 26.cb4 Bb4 27.Rd1–+) 25.Na3 Ra6 26.Qb2 c5 (26...Qa7 27.Nc2–+) 27.f5 (27.Nc2 Ne7–+) 27...Ne7 28.Nc2 Ra1 29.Ra1 Ra1 30.Qa1 h5 31.Ne3 (31.Qa8 Kh7 32.Qe8 Qf6 33.Qb5 Nf5–+) 31...cd4 32.cd4 Qb7 (32...Kh7 33.Qb2–+) 33.Qa5 Nc6 (better is 33...Qd7 34.Kf2–+) 34.Qc3 (34.Qa1–+) 34...b4 35.Qb3 (35.Qb2 Qa7 36.Nd5 Nd4–+ (36...Qd4?! 37.Qd4 Nd4 38.Nb4–+)) 35...Nd4 36.Qb2 (36.Qd5 Qd5 37.Nd5 b3–+) 36...b3 37.Nd1 Nf5 38.Qe5 (38.Qf2 Qc8 39.Qe1 Nd4–+) 38...Ne7 (better is 38...Ne3! 39.Qe8 Kh7 40.Qe5 Nd1 41.Qh5 Kg8 42.Qd1–+) 39.Nb2 (39.Kf2 Qb4 40.Qc3 Qc3 41.Nc3 b2–+) 39...Qb4 40.Qf4 (40.Kg2 Qd2 41.Kh3 Ng6 42.Qh5 Qb2 43.Qd5 Qc2–+) 40...Qe1 41.Kg2 (41.Qf1 Qc3 42.Nd1 Qd2–+) 41...Qe2 (better is 41...e3 42.h4 Qc3 43.Na4 Qc2 44.Kh3–+) 42.Kh3 (42.Qf2 Qc2 43.Kg1–+) 42...Qb2 43.Qb8 Kh7 44.Qd6 Qf6 (44...Ng6 45.Qb8 Qe2 46.Qf4 Nf4 47.gf4 Qg4) 45.Qa3 (45.Qf4 Qf4 46.gf4 b2 47.Kg3 b1Q 48.h4 Qg1 49.Kh3 Ng6 50.f5 Nf4) 45...b2 (45...Qf1 46.Kh4 Qf5 47.Qe7 Qg4) 46.Qa2 (46.Qa6 Qa6 47.g4 Qe2 48.gh5 Nf5 49.h6 Qf3) 46...Qf1 47.Kh4 b1Q (47...Qf5 48.Qb2 Ng6) 48.Qb1 (48.Qf2 Qf2 49.h3 Qd1 50.Kg5 Qg3) 48...Qb1 (48...Qf5 49.Qe4 Ng6) 49.h3 (49.Kh5 Qf1 50.Kh4 Qf5 51.g4 g5 52.Kg3 Qf3) 49...Kh6 50.g4 0–1. willi_weizenkeim – Axle_chaos, playchess.de, 2002.

4.b5 Nce7 5.c4 d4 6.e3 c5 (6...de3 7.fe3 Ng6 8.Qc2=+) 7.Bd3 (7.ed4 ed4 8.Bd3 Ng6=+) 7...Bf5 (7...Nf6 8.Qc2=+) 8.e4 (8.Bf5 Nf5 9.Qe2 Be7=) 8...Bd7 (8...Be6 9.Ne2=+) 9.Nf3 (9.Ne2 Ng6=+) 9...Ng6 10.Na3 (10.0-0 Nf4 11.Bc2 Qf6=+) 10...b6 (10...Nf4 11.Bf1=+) 11.0-0 (11.Qc2 Nf6=+) 11...Nf6 12.Qb3 (12.Bc2 Be7=+) 12...Be7 13.Rfe1 (13.Bc2 0-0=+) 13...0-0 (13...Qc7 14.Bc2=+) 14.g3 (14.Bc2 Qc7=+) 14...Ng4 (14...a6 15.Bf1=+) 15.Bf1 Qc8 16.Bg2 Nh6 (16...Nf6 17.Rab1=+) 17.Nc2 (17.Bc1 a6=+) 17...Bh3 (17...a6 18.Na3=+) 18.Bc1 Bg2 19.Kg2 Qg4 (19...f5 20.d3=+) 20.d3 Bh4?? (better 20...f5 21.h3 Qh5=+) 21.h3+- (21.Nh4? Nh4 22.Kf1 Nf3–+) 21...Qh5 22.Nh4 Nh4 23.gh4 Qh4 24.Re2 (24.Na3 f5 25.Qc2 Rf6 26.ef5 Nf5 27.Re5 Rg6 28.Kh2 Nd6-/+) 24...f5 (24...Qh5 25.f3+-) 25.Bh6 (25.Ne1 fe4 26.de4 Rf6+-) 25...gh6 (25...Qh6 26.Rg1+-) 26.Rg1 Kh8 27.Rh1 (27.Kf1 Qh3 28.Ke1 fe4 29.Re4 Rf2+-) 27...Rg8 (27...fe4!? 28.de4 Rf4+-) 28.Kf1 Rg5 (28...Raf8 29.ef5 Qg5 30.Ne1 Rf5 31.Qc2+-) 29.Ne1 Rag8? (better 29...Qh5+-) 30.Nf3 fe4 (30...Qf4 31.Ng5 hg5+-) 31.Nh4 ed3 32.Qd3 Rh5 33.Qf3 Rh4 (33...Rc8 34.Qh5 Re8 35.Qe8 Kg7 36.Qe7 Kg8 37.Rg1 Kh8 38.Qe5) 34.Qf6 (34.Qf6 Rg7 35.Re5 Re4 36.Re4 a6 37.Re8) 1–0. Janek – cewue, internet, 2016.

4.d3 Bd6 5.e3 -/+.

4.d3 Be7 5.Nf3 (5.b5 Nb8=+) 5...Nf6 (5...a6 6.e3=+) 6.Nbd2 (6.b5 e4 7.de4 de4 8.bc6 Qd1 9.Kd1 ef3 10.ef3 bc6=) 6...Be6 (6...a6 7.e4=+) 7.e4 (7.b5 Nb8=) 7...de4 (7...a6 8.Be2=+) 8.de4= 0-0 (8...a6 9.b5 ab5 10.Bb5=+) 9.Be2 (9.b5 Nb8 10.Ne5 Nbd7+=) 9...Re8 (9...Qd6 10.Ng5=+) 10.0-0 (10.b5 Na5+=) 10...a6= 11.Qc2 Bf8 (11...Bd6 12.Rfd1=) 12.Nc4 (12.a4 Bd6=) 12...Bg4 (12...Nd7 13.Rad1 Qf6 14.Bc1=) 13.Rad1 Qc8 14.Ne3 h6 (14...Bh5 15.Nd5+=) 15.Ng4+/- Ng4 16.h3 (16.Bc1 Qe6+=) 16...Nf6+= 17.a3 (17.Bc1 Qe6+=) 17...Rd8 (17...Qe6 18.Bc1+=) 18.Rd8+/- Qd8 19.Rd1 Qe7 20.c4 Nd7 21.b5 ab5 22.cb5+- Nd8 23.a4 Ne6 24.Ne5 Ne5 25.Be5 Ra4?? 26.Qa4+- (26...Nc5 27.Qd4+-) 1–0. alaamattar (2205) – joecool (2105), net–chess.com, 2005.

4.e3 Nf6 5.Nf3 e4 6.b5 Na5 7.Nd4 Bc5 8.Qa4 b6 9.Ba3 Bd4 10.cd4 Bd7 11.Qc2 h6 12.Nc3 Nc4 (better is 12...Rc8!?+=) 13.Bc4+/- dc4 14.Ne4 Bf5 (14...Rc8!?+/-) 15.Nf6+- Qf6 16.Qc4 0-0-0 17.0-0 Qg6 18.Rac1 Rd7 19.Rc3 Bh3?? (19...Be4 20.f3 Bd5+-) 20.Qc6 Bf5 (20...Qg2 21.Qg2 Bg2 22.Kg2 Kb7+-) 21.Qa8 1–0. Fritz11 – jumbo, casual, 2013.

4.d4 (4.Nf3 Bf5 5.Nd4 Bd7=+) 4...Bd7 (4...Bf5 5.Na3-/+) 5.Nf3 (5.a3 Nc6=+) 5...e6 6.Be2 (6.a3 Nc6=+) 6...Nf6 7.0-0 c5 8.c4 cd4 9.Nd4 Be7 10.cd5 Nbd5 11.Nc3 Nc3 12.Bc3 0-0 13.Bd3 Rc8 14.Rc1 Bc6 (14...e5 15.Nb3 Ba3 16.Rc2-/+) 15.h3 (15.Nc6 Rc6 16.Qe2 Qc7=+) 15...Nd5 (15...Be4!? 16.Be4 Ne4-/+) 16.Ba1 Be8 17.Bb1 Rc1 18.Qc1 Qc7 19.Qd2 Bf6 20.Rc1 Qd6 21.Qc2 Bd7?? (better is 21...g6=) 22.Qh7 1–0. revbodio1 – ablah, Live Game Caissa's Web, 2004.

4.Nf3 Nc6 5.c4 Nf6 6.cd5 Nd5 7.Bc4 Nf6 8.Bb3 (8.0-0 e6=+) 8...e6-/+ 9.Nc3 Bd6 10.g4 (10.0-0 0-0-/+) 10...0-0 (10...Ng4 11.Nb5 e5 12.Nd6 cd6 13.d4–+) 11.g5-/+ Nd7 12.Ne4 Nc5 13.Nc5 Bc5 14.Qc2 (14.Qb1!?-/+) 14...Nb4–+ 15.Qc3 Nd3 16.Ke2 Nb2 17.Qc5? (17.Qb2 b6–+) 17...Qd3 18.Ke1 Qe4 19.Ke2 (19.Bc2 Qf3 20.Rg1–+) 19...Qd3 (better 19...b6 20.Qa3 Bb7–+) 20.Ke1 Qe4 21.Ke2 Nd3 (better 21...b6 22.Qb5 Bb7–+) 22.Qd4?? (better 22.Qc7 e5 23.Rhg1–+) 22...Nf4 23.Ke1 (23.Kd1 Qf3 24.Kc2 Nh3–+) 23...Qf3 24.Qf4 (24.ef4 Qh1 25.Ke2 Qh2 26.Qe4 Qh5 27.Ke3 Qh3 28.Ke2–+) 24...Qh1 25.Ke2 Qc6 (better 25...Qa1!? 26.Qc7 e5 27.g6 hg6 28.f3–+) 26.Bc2 (26.d4 Qb5 27.Ke1 b6–+) 26...Qd6 (better 26...Qc2 27.Qd4–+) 27.Bd3 (27.Qd6 cd6 28.d4 b6–+) 27...Qf4 28.ef4 e5! 29.Ke3 (29.fe5 f6 Double attack (29...f6 Decoy)) 29...ef4 30.Kf4 Be6 31.Rg1 (31.Be4 Rad8–+) 31...Rfe8 (better 31...Rad8!? 32.Be4 Rd2 33.Kg3–+) 32.Be4 Rad8 33.Bb7 (33.d3 Rd4–+) 33...Bd5 (33...Rd2 34.Rc1–+) 34.Ba6 (34.Bd5 Rd5 35.Rc1 Rd2–+) 34...Bc4! 35.Kg3 (35.Bc4 Rd4 Double attack (35...Rd4 Decoy)) 35...Rd4 (35...Ba6 36.Rc1 Re7 37.Rb1–+) 36.f3 (36.Bc4 Rc4 37.Rb1–+) 36...Ba6 37.h4 (37.Rc1 Re7 38.Rb1–+) 37...Rf4! 38.Kh2 (38.Kf4 Bd3 Combination) 38...Rf3 39.Rg3 Bb7 (better 39...Re2 40.Rg2 Re4 41.Rg3 Rf2 42.Kg1 Rd2 43.Rg2 Rg2 44.Kg2 Rh4 45.Kg3–+) 40.Rg2 (40.Rf3 Bf3 41.Kg3 Bd5–+) 40...Re1 (40...Ra3 41.Rf2 Re1 42.Rg2 Bg2 43.Kg2 Re2 44.Kf1 Rd2 45.Ke1 Raa2 46.g6 Rdb2 47.gf7 Kf7 48.h5 Rb1) 41.Rg3 Re2 (41...Rf2 42.Kh3 Rh1 43.Kg4 Bc8 44.Kh5 g6 45.Kh6 Rh4) 42.Rg2–+ Rff2 (better 42...Re4 43.h5 Rh4 44.Kg1 Rf5–+) 43.Kg3 Rg2 44.Kf4 Ref2 45.Ke3 (45.Ke5 Rg4 46.d3 Re2 47.Kf5 Bc8) 45...Rg3 (45...Rf3 46.Kd4 Rg4 47.Ke5 Re4) 46.Kd4 Re2 (46...Rf4 47.Kc5 Rd3 48.h5 Rd5) 47.Kc5 (47.Kc4 Ba6 48.Kd5 Rd3 49.Kc6 Re6 50.Kc7 Re8 51.h5 Rc8) 47...Rgg2 (47...Rd2 48.Kc4 Rh2 49.Kc5 Rh4 50.a3 Rg5) 48.Kb4 Rd2 49.Ka5 (49.a3 a5! 50.Kc4 Ba6 51.Kc5 Rg1 52.h5 Rc1) 49...Rc2 (49...Rg4 50.h5 Rd5) 50.a4 (50.Kb4 Rg4 51.Kb3 Rh2 52.g6 Rg3 53.Kc4 Rh4 54.Kc5 Rg5) 50...Rg4 51.Kb5 Rb2 (51...a6 52.Ka5 Rc5) 52.Ka5 (52.Ka5 Re4 53.h5 Re5; 52.Kc5 a6 53.h5 Rc2) 1–0. FeegLood (2665) – WillHGT (2390), lichess.org, 2016.

4.a3 a6 5.c4 (--> 2…a6 3.e3 Nc6 4.a3 e5 5.c4).

4.a3 Bd6 5.Nf3 a6 6.b5 ab5 7.Bb5 =+.

4.b5!? Na5 5.Be5 +/-.

4.b5 Nb4 5.Be5 f6 6.Bc3 Bd7? 7.a4 c6 8.Bb4 Bb4+= 9.c3 Ba5 10.Nf3 Ne7 11.Bd3 0-0 12.Qc2 g6 13.0-0 Bg4 14.Nd4 f5? 15.Ne6 Qd7 16.Nf8 Rf8 17.Qc1 Bc7 18.c4 Qd6 19.cd5?? Qh2# 0–1. badboy1221 – zzz, Live Game Caissa's Web, 2005.

4.b5!? Nb8 5.Be5 +=.

4.b5 Nce7 5.Be5 f6 6.Bb2 Ng6 7.c4 dc4 8.Bc4 c6 9.a4 cb5 10.ab5 The passed pawn on d2 will quickly become a dangerous weapon 10...Bd7 11.Nf3 b6 (11...Bg4!?+-) 12.0-0 Bc5 13.d4 N8e7?? (13...Bd6+-) 14.dc5 (14.dc5 bc5 15.Nc3+-) 1–0. BeepBeepImAJeep (2720) – sansanich97 (1775), lichess.org, 2016.

4.c4?? Bb4!? 5.Nf3 d4 -/+.

4.c4?? d4 5.b5= Nb4? (5...Nce7 6.ed4 ed4 7.Qe2=) 6.ed4?? (better is 6.a3!? de3 7.ab4 ef2 8.Kf2 Bb4 9.Be5+-) 6...ed4 (better is 6...Bf5 7.d3 e4 8.de4 Be4=) 7.Nf3?? (better is 7.d3 Bf5 8.Be2+=) 7...d3 (better is 7...Qe7 8.Be2 d3–+) 8.Nc3?? (better is 8.Qb3 Nc2 9.Kd1–+) 8...Nc2 9.Qc2 dc2 10.Nd5 Bb4! 11.Bd3 (11.Nb4 Qe7 Double attack (11...Qe7 Decoy)) 11...f6 12.0-0 Ne7 (12...Bd6 13.Rfe1 Ne7 14.Bc2–+) 13.Rfe1?? (13.Nb4 Qd6 14.c5 Qc5 15.Nc2 Qd6–+) 13...0-0 (13...Bd6 14.Bc2 0-0 15.Ne7 Be7 16.Be4–+) 14.Ne7?? (14.Nb4 c5 15.bc6 Nc6 16.Nd5–+) 14...Be7 15.Nd4 (15.Bc2 a6–+) 15...Bb4 (better is 15...Bc5 16.Re4 f5–+) 16.Ne6 (16.Bc2 Re8 17.Bc3 Bc3 18.dc3–+) 16...Be6 17.Re6 Bd2 (better is 17...Qd3 18.Ree1 Bd2 19.Rf1–+) 18.Bf5 (18.Bc2 Re8 19.Re4 Ba5 20.Re8 Qe8–+) 18...b6 (18...c1Q 19.Bc1 Bc3 20.Bb2 Bb2 21.Rf1–+) 19.Ba3 (19.Bc2 Re8 20.Re4 Qd6–+) 19...Rf7 (better is 19...Qd4 20.Rf1 Rfe8 21.g3–+) 20.Bc2 c5 (better is 20...Bc3 21.Rf1 f5 22.c5–+) 21.Bf5 (21.bc6 Qc8 22.Re2 Bc3–+) 21...Bc3 (better is 21...g6 22.Bc2 Re7 23.Re7 Qe7 24.Rf1–+) 22.Rb1 (22.Rf1 Re7 23.Bc1 a6 24.ba6 Kf7 25.Re7 Ke7–+) 22...Qd4 (22...Qd2 23.Rf1 Qa2 24.Bc1–+) 23.h3 (23.Re4 Qd2 24.Rf1 Qa2–+) 23...Raf8 (23...Qc4 24.Rc1 Qd5 25.Rc3 Qf5 26.Re1–+) 24.Bc1 (24.Re3 g6 25.Bc2 f5–+) 24...Bd2 (better is 24...Qd1 25.Kh2 Be5 26.Re5–+) 25.Bd2 (25.Re4 Qd3 26.Rf4 Qe2 27.Bd2 Qd2–+) 25...Qd2 26.Rbe1 Qa2 27.Re8 (27.R6e4 Rd8–+) 27...Qc4 28.Rf8 (28.R8e3–+) 28...Rf8 (better is 28...Kf8 29.Bh7 Qb5–+) 29.Be6 Qe6! 30.Re6 (30.Re6 Rd8 Combination) 30...Kf7 31.Rc6 Re8 32.Rc7 (32.Kf1 Re4–+) 32...Re7 33.Rc6 (33.Rc8 Ke6 34.Rd8 Rd7 35.Re8 Kd5–+) 33...Kg6 (better is 33...Ke8!? 34.Rc8 Kd7 35.Ra8–+) 34.g4 (34.Kf1 Re4–+) 34...h5 (better is 34...Re1 35.Kg2–+) 35.f4 (35.Kg2–+) 35...hg4 36.hg4 Kf7 (36...Re4 37.f5 Kg5 38.Rc7 Rg4 39.Kf2–+) 37.g5? (37.Kf2 Ke8–+) 37...fg5 (better is 37...Kg6!? 38.gf6 gf6 39.Kf2–+) 38.fg5 g6 (38...Re5 39.Rc7 Kg6 40.Ra7 Rg5 41.Kf2–+) 39.Kg2 (39.Rf6 Kg7 40.Rc6 Re5 41.Rc7 Kf8 42.Ra7 Rg5 43.Kf2 c4–+) 39...Re5 40.Rc7 Ke6 41.Ra7 Rg5 42.Kf3 Rf5 (better is 42...c4!? 43.Rc7 Rc5 44.Rg7–+) 43.Ke4 g5 (better is 43...Re5 44.Kd3 Rd5 45.Ke3 Rd6–+) 44.Ra6 Rf4 45.Ke3 Kd7 (45...Rb4 46.Rb6 Ke5 47.Rb8-/+) 46.Rb6 Kc7 (better is 46...Rb4!?-/+) 47.Rc6= Kb7 48.Rc5 Rg4 49.Kf3 Rg1 50.Rc6 g4 51.Kf2 Rb1 52.Rg6 Rb2 53.Kg3 Rb4 54.Rg4 Rb5 55.Rg7 Kc6 56.Rg6 Kd7 57.Rg7 Ke6 58.Rg6 Kf7 59.Rd6 Rg5 60.Kf4 Rg6 61.Rg6 Kg6 ½–½. Nautiluschess – honma, ICS blitz, 2001.

4.c3 Nc6-/+ 5.Na3 (5.Ba3 Nf6-/+) 5...Nf6 (5...e5 6.Nb5-/+) 6.d3 (6.Qa4 Bd7-/+) 6...e6 (6...e5 7.e3-/+) 7.e3 Bd6 (7...e5 8.Be2-/+) 8.Be2 (8.Nb5 e5-/+) 8...0-0 9.d4 (9.Nb5 Be7-/+) 9...Ne4 (9...Bd7 10.Nb5-/+) 10.Nb5 Nf2?? (better is 10...e5-/+) 11.Kf2+/- a6 (11...e5 12.Nd6 cd6 13.de5 de5 14.c4+/-) 12.Nd6+- Qd6 13.Qd3 b5 14.Ng5 g6 15.a4 f6 16.Nf3 e5 17.e4 ba4 18.Ba3 de4 19.Qe4 Bf5 20.Bd6 Be4 21.Bf8 ed4 22.cd4 Rf8 23.Ra4 f5 24.Ra6 f4 (24...Bf3 25.Bf3 (< 25.Kf3 Nd4 26.Kf2 Kg7+-) 25...Nd4 26.Rc1+-) 1–0. icewater – enuffzunff, Caissa.com, 2004.

4.Nd4 c5 5.Nb5 (5.a3 Nc6 6.Nc6 bc6-/+) 5...Bd7 6.N5c3 (6.e4 d4 7.c3–+) 6...Nf6 7.a3 Nc6 8.Nb5 (8.d3 Qb6 9.Bc1 e6–+) 8...Bf5 (8...e5 9.a4–+) 9.g3 (9.e3 a6 10.Bf6 ef6–+ (10...ab5?! 11.Bb2–+)) 9...e5 10.Bg2 (10.a4 a6 11.N5a3 h5–+) 10...a6 (better 10...Qb6!? 11.N1c3 d4 12.Rb1–+) 11.N5c3 Nd4 (better 11...d4 12.Na2 Be7–+) 12.d3 Qa5 (12...Be7 13.Nd2–+) 13.0-0 c4 14.Qd2 (14.e3 Nc2 15.Qc2 Bd3=+) 14...cd3 15.ed3 Bc5 (15...0-0-0 16.Nd1 Qb6 17.a4–+) 16.Ne4? (better 16.Nd5 Qd2 17.Nd2 Nd5 18.Bd5=) 16...Qd2–+ 17.Ned2? (better 17.Nf6 gf6 18.Nd2 Nc2 19.Rfc1 Bd3 20.Bd5–+) 17...Nc2 18.Ra2 Bd3 19.Rc1 (19.Be5 Nd7 20.Bg7 Rg8-/+) 19...0-0 (better 19...Ng4 20.Bd5 Bf2 21.Kh1–+) 20.Be5 (20.Bf1 Bg6 21.Be5–+) 20...Ne4 (better 20...Ng4 21.Bb2 Rae8–+) 21.Rcc2?? (better 21.Ne4 de4 22.Rac2 (worse 22.Rcc2 Rac8-/+) 22...Bc2 23.Rc2=) 21...Bf2–+ (21...Bc2?! 22.Rc2 Bf2 23.Kf1-/+) 22.Kh1 Bc2 23.Rc2 Nd2 (better 23...Rac8 24.Rc8 Rc8 25.Be4 de4 26.Ne4 Re8–+) 24.Rd2-/+ Be1 (24...Rfe8 25.Rd5 Rac8 26.Bf3-/+) 25.Rd5 Rfe8 26.Bb2? (26.Nc3 Rac8 27.Na4 Bf2=+) 26...Bf2 (better 26...Rad8!?–+) 27.Rd1 Rad8 28.Rf1 (better 28.Rd8!? Rd8 29.Bf3-/+) 28...Re1–+ 29.Re1 (29.a4 b5 30.ab5 ab5–+) 29...Be1 30.h4?? (30.Be4 Re8 31.Bd5–+ (31.Bb7?? Rb8 32.Ba6 Rb2–+)) 30...Rd1 31.Nc3 (31.Kh2 Rb1 32.Be5–+) 31...Bc3 32.Kh2 Bb2 33.Bb7 a5 34.a4 Rd2 35.Kh3 (35.Kg1 Be5 36.h5 Bg3–+) 35...Bd4 (better 35...h5!? 36.Bc6–+) 36.Kg4 Ra2 (better 36...Be5!? 37.Kf3–+) 37.Bc6 g6 38.Bb5 (38.Kf4 Bf2–+) 38...Bf6 (better 38...Be5 39.Kf3 h5 40.Ke4 Bg3 41.Kd4–+) 39.Kf4 (39.h5 Be5 40.hg6 hg6–+) 39...h5 40.Ke4 (40.g4 Bh4 41.gh5 gh5–+) 40...Rf2 41.Ke3 Rf5 (41...Rb2 42.Be2 Rb3 43.Kf2 Bd4 44.Kf1 Rg3 45.Ke1–+) 42.Ke4 (42.Be2 Be5 43.g4 hg4 44.Bg4 Rf4–+) 42...Re5 43.Kf4 Re1 44.Kf3 Rg1 45.Kf2 Ra1 46.Kf3 Ra2 (46...Ra3 47.Kg2–+) 47.Ke3?? (47.Ke4 Ra3 48.Kd5–+) 47...g5 (better 47...Be5 48.Kd3–+) 48.hg5 Bg5 49.Kf3 Ra3 50.Kg2 f5 51.Kh3 (51.Be8–+) 51...Kg7 (better 51...f4!? 52.Kg2–+) 52.Kg2 f4 53.gf4 Bf4 54.Kf2 Rg3 55.Kf1 h4 56.Bc6 h3 57.Kf2 Kg6 58.Kf1 Kg5 59.Kf2 Kg4 60.Kf1 Ra3 61.Kf2 Bg3 62.Kf1 Ra2 (62...Re3 63.Bd7 Kh4 64.Bh3 Kh3 65.Kg1 Re1) 63.Bd5 (63.Bb7 h2 64.Bh1 Kh4 65.Bd5 Rf2 66.Ke1 Rg2 67.Kf1 h1Q) 63...h2 64.Bc6 (64.Ba2 h1Q 65.Ke2 Qg2 66.Ke3 Qa2 67.Kd4 Qc2 68.Kd5 Kf5 69.Kd4 Bf2 70.Kd5 Qc5) 64...Ra1 (64...Rf2 65.Ke1 Rg2 66.Kf1 h1Q) 65.Ke2–+ Rg1 66.Kd3 Rd1 (66...Kh3 67.Bd7 Kg2 68.Bc6 Kf2 69.Bd5 Rd1 70.Kc4 Rd5 71.Kd5 h1Q 72.Ke6 Qd1 73.Ke7 Qd6 74.Kf7 Qd5 75.Kf6 Qd7 76.Kg6 Qe6 77.Kg5 Qf7 78.Kg4 Qd5 79.Kh3 Qe6) 67.Ke4 h1Q 68.Ke3 Qc6 (68...Qe1) 69.Ke2 Qd5 (69...Qf3) 70.Ke3 Re1 (70...Qe6) 0–1. hamidrezaderakhshan (1625) – D887 (1615), lichess.org, 2021.

3.e3 Qd6 4.a3 =.

3.e3 Nf6 4.Nf3 b5 5.Ne5 Qd6 6.a3. pumpkin (2485) – speeders, net–chess.com, 2004.

3.Nf3 Qd6 4.a3 Nf6 5.Be5 Qd7 6.e3 Ng4 7.Bb2 Nf6 8.d3 e6 9.Bf6 gf6 10.Nbd2 Bg7 11.g3 f5 12.d4 Nc6 13.c3 Qe7 14.Bb5 Bd7 15.Qa4 (15.Bd3 a6+=) 15...a6= 16.Bc6 Bc6 17.Qb3 0-0 18.a4 b5 19.ab5 Bb5 (19...ab5 20.0-0 Rfb8=) 20.c4 (better 20.Qc2!?+=) 20...dc4=+ 21.Nc4 f6 (better 21...Bc6!? 22.Ncd2 Rfb8-/+) 22.0-0 Rfe8 23.Rfc1 Qd7 24.Na5 c6 25.Nd2 Kh8 26.Ndc4 Qd5 27.Nb6 Qb3 28.Nb3 Rab8 29.Nd7 Re7?? (29...Ra8 30.f3+-) 30.Nbc5 (better 30.Nb8 Bf8 31.Na6+-) 30...Rd8+= 31.Nb6 Rb8 (31...e5 32.Rd1 ed4 33.Rd4 Rd4 34.ed4+=) 32.Nba4 e5 33.Nc3 ed4 34.ed4 Bc4 35.Na6 Ba6? (better 35...Rd8+-) 36.Ra6+- Rb4? (36...Ree8 37.Rb1+-) 37.Rc6 (37.Ra8 Bf8 38.Rf8 Kg7+-) 37...Rd4? (37...Re8 38.d5 f4+-) 38.Kg2 (better 38.Rc8 Bf8 39.Rf8 Kg7 40.Rc8+-) 38...h6 39.Rc8 Kh7 40.Nb5 Rde4 41.Nd6 R4e6? (better 41...R4e5+-) 42.Nf5+- Rf7 (42...Re8+-) 43.R8c7 Kg6 (43...Rc7 44.Rc7 Kg6 45.Ng7 Re4+-) 44.Nh4 (44.Ng7?! Rg7 45.Rg7 Kg7+-) 44...Kh7 45.Rf7 Kg8 46.Rcc7 f5 47.Rg7 Kf8 48.Nf5 Ke8 (48...h5 49.Rh7 Re7 50.Rhe7 h4 51.Rc8) 49.Rh7 (49.Rg8) 49...Kd8 50.Ra7 Re8 (50...Re7 51.Rhe7 h5 52.Ra8) 51.Nd6 (51.Ra8) 51...Re6 (51...Re7 52.Rh8 Re8 53.Re8) 52.Rh8 (52.Rhd7) 52...Re8 53.Re8 1-0. alessandrocarvalhaes (1855) - pepifawn (1910), lichess.org, 2019.

4.b5 c6 5.c4 (5.Nf3 f6=) 5...dc4 6.Bc4 cb5 7.Be2 a4 (7...b4 8.Nf3=) 8.a3 Qd5 (8...Qf5 9.Nf3=) 9.Nf3+= Bd7 10.Nc3 Exerts pressure on the backward pawn 10...Qb3 (10...Qh5!?+=) 11.Qb3+/- ab3 12.Bb5 Bb5 13.Nb5 Na6 14.Nfd4 e6 15.Nb3 Nf6 16.d3 Be7 17.0-0 0-0 18.Rfc1 Rfc8 19.Rc8 Rc8 20.Rc1 Rc1 21.Nc1 Nd5 22.Ne2 (22.e4!? Nac7 23.Nc7 Nc7 24.a4+/-) 22...Nc5 23.d4 Nd3 24.Bc3 Bh4 25.g3 Be7 26.e4 Nf6 27.f3 Nd7 28.Nf4 Nf4 29.gf4 Nb6 30.Kf2 Nc4 31.Bb4 Bb4 32.ab4 Nb2 (better is 32...Kf8!?+/-) 33.Ke2 Nc4 34.Nc3 (better is 34.Kd3!? Nb2 35.Kc3 Nd1 36.Kd2+-) 34...Kf8+/- 35.Na4 b5 36.Nc3 Na3 37.Kd1 Ke7 38.Kc1 Nc4 (better is 38...Kd7!?+/-) 39.Nb5+- Ne3 40.Nc3 Nf1 (40...Ng2 41.b5+-) 41.h3 Nh2 42.Ne2 Nf3 43.b5 Kd7 44.Kb2 Kc7 45.Ka3 Nd2 46.e5 Kb6 47.Kb4 f5?? (better is 47...Nf3+/-) 48.Nc3+- Ne4 (48...Kb7 49.Na4 g5 50.Nc5 Kb6 51.Ne6 gf4 52.Nf4+-) 49.Na4 Kb7 50.Nc5 Kb6 51.Ne6 g6 (51...Nf2 52.d5 Nd3 53.Kc4 Nb2 54.Kb3 Kb5 55.Kb2+-) 52.Nc5 (better is 52.d5 Kb7 53.Nc5 Kc7 54.Ne4 fe4 55.e6+-) 52...Nf2 (52...Ng3 53.d5 Nh5+-) 53.e6 Nh3 54.e7 Nf4 (54...Nf2 55.e8Q Nd3 56.Nd3 Kc7 57.Nc5 h5 58.Qc6 Kd8 59.Qd7) 55.e8Q 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.b5 e6 5.Nf3 Qd8 6.c4 c6 7.a4 Nf6 8.Be2 Nbd7 9.d4 Ne4 (9...dc4 10.Bc4 Nb6 11.Bd3+=) 10.Nbd2 Ndf6 11.0-0 Bd6 12.c5 Be7 13.bc6 bc6 14.Ne5 Qc7 15.f3 (better 15.Nc6 Nd2 16.Qd2+-) 15...Ng5? (better 15...Nd2 16.Qd2 Nd7 17.Nd7 Bd7+=) 16.Nb3 (16.h4!? Nd7 17.hg5 Ne5 18.de5 Bc5+-) 16…h6 1–0. GuestNJPY – GuestJHTW, freechess.org, 2017.

3.a4 Bc6 4.b5 Bd7 5.Nf3 a6 (5...Nf6 6.e3=) 6.e3 ab5 (6...Nf6 7.Be2=) 7.ab5 Ra1 8.Ba1 e5 (better is 8...Nf6!?+=) 9.Ne5 (9.Be5 Nf6 10.Nc3+/-) 9...Qf6 (9...Be6!?+/-) 10.Nd7+- Qa1 11.Nb8 Qa7 12.Na6! ba6 13.ba6 Bd6 (13...c6+-) 14.Qg4 g6 (14...Ne7 15.Qg7 Ng6 16.Bb5 Ke7+-) 15.Qc8 Ke7 16.Nc3 (16.Nc3 c6 17.Qc6+-) 1–0. Wall,Bill – TKO, internet, 2003.

3.b5 Bb5-/+ 4.a4 Bc6 5.e3 Qd6 (5...Nf6 6.Nf3-/+) 6.Nf3=+ e5 (better 6...a6!?=+) 7.Be5+= Qe6 (7...Qd8 8.Nc3+=) 8.d4 (8.Bc7 Bc5+-) 8...Nd7 (8...Qd7 9.c3+=) 9.Bc7+- Ne7 (9...Ngf6 10.Bf4+-) 10.Bd3 Nf5 (10...Rc8 11.Bg3 Nf5 12.Bf4+-) 11.0-0 Be7 12.Nbd2 (12.Ne5 Rc8 13.Nc6 bc6+-) 12...0-0 13.c4 (better 13.Bf4+-) 13...dc4?? (better 13...Ne3!? 14.Bh7 Kh7 15.fe3 Qe3 16.Rf2 Rac8 17.Qc2 Kg8 18.cd5 Bd5=) 14.Nc4?? (14.Bc4!? Qf6 15.d5 Rac8+-) 14...Bd5 (14...Rac8 15.Be5+-) 15.Nce5 (better 15.Qc2 Qc6 16.Bf4 Bc4 17.Qc4 (17.Bf5?! Bf1 18.Qc6 bc6+-) 17...Qc4 18.Bc4+-) 15...Bf6?? (15...Rac8 16.Qb1 g6 17.Rc1 Ne5 18.Ne5+-) 16.Bb5 (better 16.e4 Ne7 17.ed5 Nd5 18.Qb1+-) 16...Ne5+= 17.Ne5 (better 17.Be5 Be5 18.Ne5+-) 17...a6? (better 17...Be5 18.de5 Rac8=) 18.Bd7+- Qe7 19.Bb6?? (better 19.Bf5 Qc7 20.Nd7+-) 19...Be5? (better 19...Ne3!? 20.fe3 Be5=) 20.Bf5+- Bf6? (better 20...Qg5 21.Qg4 Qg4 22.Bg4 Bd6+-) 21.Bc5+- Qc5 (21...Qe8+-) 22.dc5 Ba1 (22...Rfd8 23.Rb1 Bg2 24.Bh7 Kf8 25.Kg2 Rd1 26.Rfd1+-) 23.Qa1 (23.Qd5 Bf6+-) 23...Be6 (23...Rfe8 24.Rd1 Bc6 25.Rd6+-) 24.Be6 (24.Be4 Rab8+-) 24...fe6 25.Qb2 (25.Qe5 Rae8+-) 25...Rab8 (25...Rf7 26.Qe5+-) 26.Qb6 Rfe8 (26...e5 27.Rd1 Kh8 28.Rd7+-) 27.h3 (27.Rd1 Kh8+-) 27...Kh8 (27...Re7 28.c6 Rc8 29.cb7+-) 28.Rd1 h6 (28...e5 29.Rd7+-) 29.Rd7 e5 (29...Rec8 30.Qb2 e5 31.Qe5+-) 30.Rb7 Rbc8 31.Qa7 (better 31.Ra7+-) 31...Rc5 (31...Ra8 32.Rg7 Ra7 33.Ra7 Re6+-) 32.Rf7 (32.Rg7 Rc1 33.Kh2 Re7 34.Qe7 Rh1 35.Kh1 e4 36.Qf8) 32...Rg8 (32...Rc1 33.Kh2 Rg8+-) 33.Qc5 a5 34.Qe5 Kh7 35.Qf5 Kh8 36.Qg6 h5 (36...Re8 37.Qg7) 37.Qh5 1–0. GuestKDZJ – GuestTTT, freechess.org, 2017.

3.e3 a6 (--> 2…a6 3.e3 Bd7).

3.e3 b5 4.a4 Na6? (better is 4...ba4 5.Nf3 a6+=) 5.ab5+- Nb4 6.c3 e5 7.cb4 Bb4 (7...Bd6 8.Nf3 f6 9.Nc3+-) 8.Be5 Qg5 (8...Nf6 9.Nc3+-) 9.Nf3 Qg6 10.Bc7 Nf6 11.b6 Bc6 (11...0-0 12.b7 Rae8 13.Ra7 Qe4+-) 12.Ne5 Qe4 13.Nc6 d4 14.b7 Qc6 15.Bb5! 0-0 (15...Qb5 16.ba8Q) 16.Bc6 Rac8 17.bc8R Rc8 18.Ra7 (18...Bc5 19.Rb7+-) 1–0. miehnekort – meeheal, Yahoo, 2005.

3.e3 Bb5?? 4.c4 (better 4.Bb5 c6 5.Be2+-) 4...dc4 (4...Bc4 5.Bc4 dc4 6.Qg4=+) 5.Nc3= a6 6.a4 (6.d3 cd3 7.Nb5 ab5=) 6...Bc6 (6...Bd7 7.Bc4 Nc6 8.b5 ab5 9.ab5 Ra1 10.Qa1+=) 7.Nf3 (7.b5 Bd7=) 7...e6 (7...Nf6 8.Bc4 e6 9.b5+=) 8.b5+= ab5 9.ab5 Ra1 10.Ba1 Bf3 (10...Bd7 11.Bc4 Nf6 12.0-0+=) 11.Qf3 c6 12.Bc4 Nf6 13.0-0 Bd6 14.Ne4 (14.bc6 Nc6 15.Nb5 e5+=) 14...Ne4 15.Qe4 0-0 16.Qg4 f6 (better 16...g6!?+=) 17.Qe6+- Kh8 18.Qh3 (18.Rb1 Qc7 19.f4 cb5 20.Rb5 Nd7+-) 18...cb5 (18...Qd7 19.Be6 Qe7 20.bc6 Nc6 21.d4+-) 19.Bb5 Nc6 20.d4 Nb4 (20...f5 21.d5 Ne5 22.Qh5+-) 21.Bb2 (21.Bd7 g6+-) 21...Qb6 (21...f5 22.Rd1+-) 22.Bd7 (better 22.Bc4+-) 22...Nd3?? (better 22...g6+-) 23.Bf5 h6 24.Bd3 Qb2 (24...f5 25.Rb1 Qc7+-) 25.Rb1 (better 25.Qf5 Kg8 26.Qe6 Kh8 27.Qd6+-) 25...Qd2 (25...Qa2 26.Qd7 Bb8+-) 26.Qf5 Kg8 (26...Qd3 27.Qd3 Rc8 28.Qf5+-) 27.Qh7 Kf7 28.Rb7 Ke6 29.Bc4 (29.Qf5) 1–0. GuestVHKD – GuestMPYJ, freechess.org, 2018.

3.e3 Bc6 4.Nf3 Nd7?? (4...Nf6 5.Be2=) 5.a3?? (better is 5.b5+-) 5...Ndf6 6.c4 e6 7.cd5 ed5 8.Nc3 Qe7 9.d4 Kd8 (9...Bd7 10.Bd3+=) 10.Bb5 (10.Bd3 Bd7+/-) 10...a6? (better is 10...Bb5!? 11.Nb5 a5+=) 11.Bc6+/- bc6 12.Qc2 Qe4?? (better is 12...a5+/-) 13.Ne4+- Ne4 (13...de4 14.Ne5 Nh6 15.g4+-) 14.Qc6 Ne7 15.Qa8 Kd7 16.Ne5 Ke6 17.Qa6 Kf5 18.g4 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

3.e3 e5 4.Be5 Bb4?? (better is 4...Nc6 5.Bf4 Bb4=) 5.Bg7+- Bd6 6.Bh8 Be5 (6...Nf6+-) 7.Be5 Qe7 (7...Nc6 8.Bf4+-) 8.Nf3 (8.Bc7 Nf6+-) 8...d4 (8...Bg4 9.Bg7+-) 9.Bd4 Ba4 (9...Nc6 10.Bb2+-) 10.Nc3 (10.Nc3 Bc6 11.Bc4+-) 1–0. Fournier,Frederic (1670) – asaf_zu, rated lightning game, 2002.

3.e3 f6 4.Nf3 (better is 4.Qh5!? g6 5.Qd5+/-) 4...Nh6 5.d4 e6 6.a3 Be7 7.Bd3 0-0 8.Nbd2 a6 9.0-0 b5 10.c3 Nc6 11.e4 de4 12.Ne4 f5 13.Nc5 Bc5 14.dc5 Ng4 (14...e5 15.c4 e4 16.cb5 ef3 (16...ed3? 17.bc6 Bc6 18.Ne5+-) 17.bc6 fg2 18.Qb3 Rf7+/-) 15.Qc2 (15.c4 Ne7+/-) 15...Nge5 (15...e5!? 16.Qb3 Kh8=) 16.Ne5 Ne5 17.c4 Nd3 18.Qd3 Bc6 19.Qd8 (19.Qe3 Qe7+/-) 19...Rad8 20.cb5 Bb5 21.Rfd1 Rd3 22.Rd3 Bd3 23.Rd1 Be4 24.f3 Bd5 25.Kf2 c6 26.Ke3 Rb8 27.Be5 Rb7 28.g3 Kf7 29.f4 a5 30.Rb1 ab4 31.ab4 Bc4 32.Rb2 Rd7 33.Bd6 Bb5 34.Ra2 Kg6 35.h4 h5 36.Ra8 Kh7 37.Kd4 g6 (37...Kg6!?+=) 38.Ke5+/- Bc4 39.Ra1 (39.Rc8 Bb5+-) 39...Bd5 (39...Rb7 40.Kd4 Bd5 41.Kc3+/-) 40.Rb1 (better is 40.Ra6!?+-) 40...Rb7+= 41.Kf6 Bc4 42.Rb2 (42.Ra1!? e5 43.b5 (worse is 43.fe5 Rf7 44.Kg5 f4-/+) 43...Rf7 44.Kg5 ef4 45.gf4 (45.bc6?! fg3 46.c7 Be6+/-) 45...cb5 46.c6+-) 42...Bd5+= 43.Rb1 Bc4 44.Rb2 (44.Ra1 Bd3 45.Be5+-) 44...Bd5= 45.Rb1 ½–½. Fournier,Frederic (1640) – lfjm29, Active, 2007.

3.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 Bd7).

3.Nf3 Nf6 =.

3.g3 Nc6 4.b5 Nb8 5.a4 a6 6.Bg2 e6 7.d3 (7.Nc3!?=+) 7...ab5-/+ 8.ab5 Ra1 9.Ba1 Bb5 10.Nd2 Nf6 11.c4 dc4 12.dc4 Bc6 13.Bc6 (13.Ngf3 Bd6-/+) 13...Nc6 (worse 13...bc6 14.Ngf3=+) 14.Ngf3 Bb4 15.0-0 0-0 16.Nb3 Na5 (better 16...Qe7!?-/+) 17.Na5=+ Qd1 18.Rd1 Ba5 19.Bf6 gf6 20.Rd7 Kg7 (20...Ra8!?=+) 21.Nd4= Kg6 22.Nb3 Bb6? (better 22...Ra8=) 23.c5+- Ba7 (23...Bc5 24.Nc5 b6 25.Nd3+-) 24.Rc7 Bb8 25.Rb7 Be5 26.c6 Rc8 27.Na5?? (better 27.f4 Bd6 28.Rb6+-) 27...Bc3= 28.Ra7 Ba5 29.Ra5 Rc6 30.Kg2 Rc2 (30...f5 31.Kf3=) 31.e3 (31.e4 Rc3+=) 31...e5 (31...f5 32.h3=) 32.h4 h5 33.Ra7 (33.e4 Rc4 34.Kf3 Rc3 35.Ke2 Rc2 36.Ke3 Rc3 37.Kd2 Rb3=) 33...Rc4 34.Kf3 f5 35.Ra6 f6 36.Ke2 Rc2 37.Kf3 Rc4 38.Ke2 f4 39.e4?? (better 39.Kd3 Rc1 40.gf4 ef4 41.e4=) 39...fg3–+ 40.fg3 Re4 41.Kf3 Rc4 42.Ra5 Kf7 (42...Kf5 43.Rb5–+) 43.Ra7-/+ Ke6 (43...Kg8 44.Kf2-/+) 44.Ra6 (better 44.Rh7!?-/+) 44...Kf5–+ 45.Ra8 (45.Ra5 Rb4–+) 45...Rc3 (45...e4!? 46.Ke2–+) 46.Kg2 e4 47.Rh8 (47.Re8 Rc2 48.Kh3 Rc6–+) 47...Kg6 (47...Rc2!? 48.Kh3 e3 49.Re8–+) 48.Rg8 Kf7 49.Rd8 f5 (49...Rc2 50.Kf1–+) 50.Rd5 (50.Rh8 Rc2 51.Kf1 Kg6-/+) 50...Ke6 51.Ra5 (51.Rd8-/+) 51...e3 (better 51...Rc2!? 52.Kf1 Rc1 53.Kf2 Rc6–+) 52.Kf3 Rb3 (52...e2!? 53.Ke2 Rg3 54.Ra6 Ke5=+) 53.Ra6 Ke5 54.Ra5 Kd4 55.Rf5?? (better 55.Ra4 Kd3 56.Ra8=) 55...Kd3 (better 55...Rb2 56.Rd5 Kd5 57.Ke3 Ke5–+) 56.Rh5?? (better 56.Rd5 Kc4 57.Rh5+-) 56...Kd2 57.Re5 e2?? (better 57...Rd3=) 58.Kf2+- e1Q 59.Re1 Rb6 60.Re2 Kd3 61.Re3 Kd2 (61...Kd4 62.g4+-) 62.Re8 (62.g4 Rf6 63.Rf3 Rh6+-) 62...Rf6 (62...Rh6 63.Kg2+-) 63.Kg2 Kd3 64.g4 Kd4 (64...Rf4 65.Kg3 Rf1 66.g5+-) 65.g5 Rg6 66.Kg3 Kd5 67.Kg4 Kd6 (67...Rg7 68.h5 Kd4 69.g6+-) 68.h5 Rg7 69.h6 Rh7 70.Kh5 Kd7 (70...Ra7 71.g6 Ra5 72.Kg4 Ra4 73.Kf3 Ra3 74.Re3 Re3 75.Ke3+-) 71.Re1 Kd8 72.g6 Rd7 73.g7 Rd5 74.Kg6 Rd6 75.Kh7 Rd7 76.Kh8 Kc7 77.g8Q Rd6 78.Re7 Kc6 (78...Rd7 79.Rd7 Kd7 80.Qd5 Kc7 81.h7 Kb6 82.Kg7 Ka6 83.h8Q Ka7 84.Qha8 Kb6 85.Qab7) 79.Re6 (79.Qc4 Kb6 80.Qc7 Kb5 81.Re5 Kb4 82.Qd6 Kb3 83.Rc5 Ka2 84.Qb8 Ka3 85.Ra5) 79...Re6 80.Qe6 (80.Qe6 Kc5 81.h7 Kd4 82.Kg8 Kc3 83.h8Q Kc2 84.Qe2 Kb3 85.Qhb2 Ka4 86.Qeb5) 1–0. JUANKARODA (1805) – alberto20161020100 (1815), lichess.org, 2020.

3.g3 e5 4.Be5= Nc6 5.Bc3 (better is 5.Nf3=) 5...Bb4?? (better is 5...Nb4 6.a3 Nc6+=) 6.Bg7+- Be7 (6...Qe7 7.Bh8 Nf6 8.Bh3+-) 7.Bh8 Bf6 (7...Bf5 8.Bg2+-) 8.Bf6 Qf6 (8...Nf6 9.Nf3+-) 9.Nc3 Be6 (9...Nge7 10.Bg2 d4 11.Ne4+-) 10.Nb5 (10.Bg2!? 0-0-0+-) 10...0-0-0 11.c3 a6 12.Na3 (12.Nd4 Nd4 13.cd4 Qd4+-) 12...b5 (12...d4 13.c4+-) 13.Bg2 Nh6 (13...Nge7 14.Nc2 d4 15.cd4 Nd4 16.Nd4 Rd4 17.Nf3+-) 14.Bf3 (14.Nc2 Ne5+-) 14...Bg4 (14...Ng4 15.d4 Na5 16.Nh3+-) 15.Bg4 (15.Nc2 Ne5+-) 15...Ng4 16.f3 Nge5 (16...Ne3 17.Qb3 Nf5 18.Nh3+-) 17.d4 Nc4 (17...Qe7 18.Nc2 Nc4 19.Nh3+-) 18.Nc4 dc4 19.Nh3 b4 (19...Ne7 20.Nf4+-) 20.0-0 (better is 20.Qa4!? a5 21.Rd1 bc3 22.Qc4 Nd4 23.Qc3 Qb6+-) 20...bc3 21.e3 Nb4 (21...Qe6 22.Qa4 Rd6 23.Nf2 Qe3 24.Qa6 Kd7 25.Rae1 Qd4 26.Qa8+-) 22.Qa4 Qb6 (22...Nd5 23.Rfe1 Qb6 24.Rab1+-) 23.Rab1 a5 24.Rfc1 Rd4 (24...Qe6 25.Rc3 Nd5 26.Ra3+-) 25.Rc3 (better is 25.ed4 Qd4 26.Nf2 Qe3 27.Qa5 Nd3+-) 25...Rd2 26.a3 (26.Qe8 Rd8 27.Qf7 Qg6 28.Qg6 hg6 29.Rc4 Rd3+-) 26...Qh6 (26...Qf6 27.Rc4 Qf3 28.Qe8 Rd8 29.Rf4 Re8 30.Rf3+-) 27.ab4 (better is 27.Qe8 Rd8 28.Qf7 Nd5 29.Qf5 Rd7 30.Rc4 Qf6+-) 27...ab4 (27...Qh3 28.Qe8 Rd8 29.Qf7 Rd2 30.Qe8 Rd8+-) 28.Qe8 Rd8 29.Qa4 bc3?? (29...Rd2 30.Ra1 bc3 31.Qe8 Rd8 32.Ra8 Kb7 33.Rd8 c2 34.Qe4 Qc6 35.Qc2 Qf6 36.Qe4 Kb6 37.Rb8 Kc5+-) 30.Qa8+- Kd7 31.Rd1 Ke6 32.Rd8 Qe3 33.Nf2 Qe1 34.Kg2 Kf6 35.Qa6 (35.Ng4 Ke7 36.Re8 Kd6 37.Re1 c2 38.Nf6 Kc5 39.Re5 Kb4 40.Qa5 Kb3 41.Rb5) 35...Kg7 36.Qc4 Qa1 37.Qg4 Kf6 (37...Kh6 38.Qf4 Kh5 39.g4 Kg6 40.Rg8) 38.Ne4 Ke5 39.Qf4 Ke6 40.Qf6 1–0. BorisOwl – Iplaychess, gamecolony.com, 2000.

3.g3 Nf6 4.Nf3 +=.

4.b5 Bd6!?=+.

4.b5 Nf6 5.Be5+= Ne4 6.e3 c6 7.Nf3 Bb4 (better 7...f6!? 8.Bf4 a6 9.bc6 Nc6+/-) 8.Bg7+- Rg8 9.Bb2 Bg4 10.h3 Be6 11.c3 Bd6 12.d3 Nf6 13.Nbd2 cb5 14.ab5 Qd7 15.Nd4 Ke7 16.e4 de4 17.de4 Bf4 (17...Rd8 18.Bd3+-) 18.Ba3 (18.Ne6?! Qe6 19.g3 Bd2 20.Qd2 Ne4+-) 18...Ke8 19.Qf3 (19.Ne6?! Qe6 20.Bb4 Nbd7+-) 19...Nd5?? (19...Qc7+-) 20.ed5 Bd5 (20...Bd2 21.Kd2 Qd5 22.Qd5 Bd5 23.Re1 Kd8+-) 21.Qf4 Qd8 (21...Kd8+-) 22.Qe5 (better 22.Ne4 Rg6 23.Qe5 Kd7+-) 22...Be6 23.Ne6 Qa5 24.Nf8 Kd8 25.Be7 Kc8 26.Qf5 Nd7 (26...Kc7 27.Qc5 Nc6 28.Qd6 Kc8 29.Qd7 Kb8 30.Bd6 Qc7 31.Qc7) 27.Qd7 Kb8 28.Bd6 Qc7 29.Qc7 (29.Bc7?!=) 1-0. DEFFM – GuestPWCJ, freechess.org, 2021.

4.Be5 Nc6 5.d4 +=.

4.b5 =+.

4.Nf3 =+.

4.Nf3 Nf6 5.a4 a5 (5...e6 6.b5=) 6.b5 c5 (6...e6 7.Be2=) 7.c4 e6 8.Bd3 b6 9.0-0 Be7 10.Qc2 Bc8 11.Na3 Bb7 12.cd5 ed5 (12...Nd5 13.Bc4 (13.Bg7? Rg8–+) 13...Nb4 14.Qd1=) 13.Bh7 (better 13.Rac1+=) 13...Nh7?? (13...d4 14.Bd3 Bf3 15.gf3 Qd5-/+) 14.Bg7+- Bf6 15.Bh8 Bh8 16.Qh7 Ba1 17.Ra1 Qf6 18.Qg8 Ke7 19.d4 Nd7 20.Qg3 cd4 (better 20...Rc8+-) 21.ed4 (worse 21.Nd4 Rc8+-) 21...Rc8 22.Re1 Kf8 23.Ng5 Qg6 24.h4 Re8 (24...Kg8+-) 25.Nh7! Qh7 26.Qd6 Kg7 27.Re8 Nf6 (27...Qf5 28.Qg3 Qg6 29.Qg6 Kg6 30.Rd8+-) 28.Qg3 Qg6 29.Qg6 Kg6 30.Rb8 1–0. GuestQMNM – GuestDJDS, freechess.org, 2018.

4.Nf3 Bg4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Bf5 4.Nf3 Bg4).

4.b5 Na5 (--> 2.Bb2 Nc6 3.b5 Na5 4.e3 Bd7).

4.b5 Nb8 (--> 2.Bb2 Nc6 3.b5 Nb8 4.e3 Bd7).

(--> 1.b4 d5 2.Bb2 e6 3.e3 Bd7).

4.a3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd7).

3.a3 a5 A) 4.Nf3 ab4 (4...Ngf6 5.b5 e6 6.e3 Bd6+=; 4...e6 5.ba5 Ngf6 6.e3 Bd6+=; 4...f6 5.Nc3 e5 6.Nd5 c6=) 5.ab4 Ra1 6.Ba1 Ngf6+=; B) 4.b5 e5 5.Nf3 e4 6.Nd4 Ne5 +=.

3.a3 c6 (--> 1.b4 c6 2.Bb2 d5 3.a3 Nd7).

3.a3 e6 A) 4.e3 Ngf6 (4...a5 5.Nf3 ab4 6.ab4 Ra1+=; 4...e5 5.Nf3 e4 6.Nd4 a5=) 5.Nf3 a5 6.ba5 Ra5+=; B) 4.Nc3 a5 (4...Ngf6 5.Nf3 e5 6.e3 a5+=; 4...d4 5.Ne4 f5 6.Ng3 f4=; 4...a6 5.e4 de4 6.Ne4 Ngf6=) 5.b5 Ngf6 6.e3 Bd6+=; C) 4.Nf3 Ngf6 (4...a5 5.ba5 Ngf6 6.e3 Bd6+=) 5.e3 a5 6.ba5 Bd6+=.

3.a3 Ngf6 4.Nf3 e6 (4...a5 5.b5 e6 6.e3 Bd6+=; 4...a6 5.e3 e6 6.c4 dc4=) 5.e3 Bd6 6.Nc3 0-0 +=.

3.a4 Bc6 4.b5 Bd7 5.Nf3 a6 (5...Nf6 6.e3=) 6.e3 ab5 (6...Nf6 7.Be2=) 7.ab5 Ra1 8.Ba1 e5 (better is 8...Nf6!?+=) 9.Ne5 (9.Be5 Nf6 10.Nc3+/-) 9...Qf6 (9...Be6!?+/-) 10.Nd7+- Qa1 11.Nb8 Qa7 12.Na6! ba6 13.ba6 Bd6 (13...c6+-) 14.Qg4 g6 (14...Ne7 15.Qg7 Ng6 16.Bb5 Ke7+-) 15.Qc8 Ke7 16.Nc3 (16.Nc3 c6 17.Qc6+-) 1–0. Wall,Bill – TKO, internet, 2003.

3.b5 b6 4.d4 Ngf6 5.e3 e6 6.c4 Bb7 7.Nf3 Bd6 8.Nbd2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0 7.d4 b6 8.Nbd2 Bb7).

3.b5 e5 4.Nf3 Bd6 5.e3 Ngf6 6.Be2 0-0 7.0-0 c5 8.c4 d4 9.ed4 cd4 10.d3 b6 11.a4 Bb7 12.Ba3 Qe7 13.Bd6 Qd6 14.Nbd2 Rfe8 15.Nh4 g6 16.Bf3 Bf3 17.Qf3 Nc5 18.Rfe1 Nh5 19.Ne4 Ne4 20.Qe4 f5 21.Qe2 Nf6 22.g3 e4 23.de4 fe4 24.Ng2 Rad8 25.Nf4 d3 26.Qd2 Qd4 27.Rac1 Ng4 28.Nd5 Rf8 29.Rf1 Ne5 30.Kg2 Nc4 31.Qg5?? (31.Ne7 Kg7 32.Qa2–+) 31...Rd5 32.Qe7 e3 (32...d2!? 33.Qe6 Kg7 34.Rcd1–+) 33.Qe6?? (better is 33.Qf8 Kf8 34.fe3 Rf5 A) 35.ed4? Ne3 36.Kg1 d2–+ (36...Nf1 37.Rf1 d2 38.Rd1+=); B) 35.Rf5 gf5 36.ed4-/+) 33...Kh8 34.f3 (34.Rc4 Qc4 35.Qe3 Qa4 36.Qe7–+) 34...e2 35.Rfe1 d2 36.Qe2 dc1Q (better is 36...Qb2 37.Rcd1 de1N 38.Re1–+) 37.Rc1 Qd2 38.Qd2 Rd2 39.Kh3 Ne3 40.Rc7 (40.f4 Rd5 41.g4 Rf4–+) 40...Rf3 (better is 40...Rd5 41.Rc4 Nc4 42.f4 Ne3 43.g4 Rf4 44.Kg3 g5 45.h4 Nf1 46.Kg2 Rd2 47.Kg1 Ne3 48.hg5 Rf1) 41.Ra7 g5 (41...Rd5 42.Ra8 Kg7 43.Ra7 Kh6 44.Rh7 Kh7 45.a5 Rh5) 42.Ra8 Kg7 43.Ra7 Kg6 44.Ra8 (44.Rg7 Kg7 45.a5 Rff2 46.a6 Rh2) 44...Rff2 (44...g4 45.Kh4 Rh2) 45.Rg8 Kh6 46.g4 1–0. avinoam – holpak, internet, 2013.

3.d3 e5 4.a3 (--> 1.b4 e5 2.a3 d5 3.Bb2 Nd7 4.d3).

3.d3 Ngf6 4.f4 (4.Nf3!?+=) 4...e6-/+ 5.Bc3 (5.Qd2!?-/+) 5...c5–+ 6.b5 d4 7.Bb2 (7.Bd2 Nd5–+) 7...Nd5 8.Bc1 (better is 8.Nf3 Bd6 9.g3–+) 8...Bd6 9.g3 Qa5 (9...a6!? 10.ba6 Ra6 11.Bg2–+) 10.Bd2 Qb5 11.c4 (11.Na3 Qa6 12.Nc4 Be7–+) 11...Qb2 12.Qb3? (12.Na3 Qa3 13.cd5 ed5 14.Bg2–+) 12...Qa1 13.cd5 ed5 14.e3 (14.Nf3 c4! 15.Qc2 cd3 16.ed3–+) 14...de3 (better is 14...0-0–+) 15.Bc3-/+ c4 16.dc4 (16.Ba1?? cb3 17.ab3 0-0–+) 16...Nc5 17.Ba1 Nb3 18.Bg7?? (better is 18.ab3 Bf5 19.Nc3+=) 18...Rg8–+ 19.Bf6 Nc1 20.Kd1 (20.cd5 Bd7 21.Nc3–+) 20...Na2 21.Ne2 dc4 22.h4 (22.Nbc3 Rg6 23.Bd4 Nc3 24.Nc3–+) 22...Bf5 23.Nbc3 Nc3 24.Nc3 (24.Bc3 Rd8 25.Ke1 Bc5–+) 24...Rg3 25.Bc4 (25.h5 Be7 26.Be7 Ke7 27.Nd5 Kd6–+) 25...Rc8 26.Bd5 (26.Bb5 Kf8 27.Ke2 Bb4–+) 26...Bb4 27.Ne4 Bg4 0–1. Taulien,Christian (2110) – Hausmann,Heiko (2085), remoteschach.de, 2004.

3.d4 c6 4.Nf3 Ngf6 5.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7 5.d4).

3.d4 e5 4.de5 Bb4 5.Nd2 Qe7 6.Ngf3 c5 7.a3 Ba5 8.e3 Bc7 Will e5 fall? 9.Bb5 a6 10.Bd7 Bd7 (worse is 10...Kd7 11.c4 dc4 12.Nc4 Ke8 13.Nd6 Kf8 14.Rc1+/-; 10...Qd7?! 11.Rc1=) 11.e6 fe6 12.Ne5 Nf6 13.Nd7 Qd7 14.Bf6 gf6 15.Qh5 Qf7 16.Qe2 Rg8 17.g3 Qg6 18.Nb3 c4 19.Nc5 Ba5 20.Kf1 b5 21.Ne6? (better is 21.e4 Bb6 22.Ne6 Qe4 23.Rg1 Qe2 24.Ke2–+) 21...Kf7?? (better is 21...Qe4 22.Qh5 Ke7–+) 22.Nf4= Qf5 23.Qh5 Qh5 24.Nh5 Bc3 25.Rb1 d4 26.ed4 Bd4 27.Nf4 Rge8 28.Kg2 Bc5 29.Nd5 Re2 (29...Ba3?! 30.Nc7=) 30.Rhf1 Rc2 31.Nb4 Rd2 32.Rbd1 Bb4 33.ab4 Rad8 34.Ra1 R8d6 35.Ra5 Rb2 36.Rfa1 Rdd2 37.Rf1 Rb4 38.Ra6 Rbb2 39.Rc6 Rdc2 40.g4 h6 41.Kg3 Rc3 42.f3 Rcc2 43.h4 Rg2 44.Kf4 Rgf2 45.Ra1 Ra2 46.Rb1 Rfb2 (46...Ra3 47.Rb5 Raf3 48.Ke4 Rf4 49.Ke3 R2f3 50.Ke2-/+) 47.Rd1 (47.Rb2!? Rb2 48.Kf5=) 47...Rd2-/+ 48.Rb1 Rd4 49.Kg3 Rd5 50.h5 Rad2 51.Ra1 Rd6 52.Rc7 Rd7 53.Rc5 R2d5 54.Rc6 Ke7 55.Re1 Re5 56.Ra1 (56.Re5!? fe5 57.Rh6+=) 56...Rd6-/+ 57.Rc7 Ke6 58.Rh7 c3 59.Rh6 b4 60.Rc1 Rc6 61.Rh8 b3 (better is 61...Rb5 62.h6 Kf7 63.Rh7 Kg6+=) 62.f4?? (better is 62.Rb8+=) 62...Rb5 (62...b2 63.f5 Kd7 64.Rd1 Rd6 65.Rb1–+) 63.f5? (better is 63.Rd1 Rd6 64.Re8 Kd7 65.Rde1 Rd3 66.Kh4–+) 63...Kd5 64.h6 b2 65.Rd8 Kc4 66.Rc3 Kc3 67.h7 (67.Rd1 b1Q 68.Rb1 Rb1–+) 67...b1Q 68.h8Q Qg1 69.Kf3 Qf1 70.Kg3 Re5 (70...Re5 71.Qh6 Re2–+) 0–1. Sapareva,Magdalena (1645) – Yotov,Lyuben (1885), Sofia BUL, Seniors Ch, 2012.

3.d4 e6 4.a3 Ngf6 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.d4).

3.e3 a6 (--> 2.Bb2 a6 3.e3 Nd7).

3.e3 b6 4.a4 Bb7 5.Nf3 e6 6.b5 Ngf6 7.d4 Bd6 8.Nbd2 0-0 9.c4 Bb4 10.Qb3 Bd2 11.Nd2 c6 (11...c5 12.bc6 Bc6 13.Rc1=) 12.Be2 (12.cd5!? Nd5 13.Nc4+=) 12...dc4=+ 13.Nc4 cb5 14.ab5 Bg2 15.Rg1 Bd5 16.f3 Qc7 17.Rg2 Rfc8 18.Rc1 Qd8 (18...a5 19.Qa4-/+) 19.e4=+ Bc4 20.Bc4 Qe7 (20...Nh5 21.Kf1=+) 21.Ba3 Qe8 22.h4 (22.Qe3 Nf8=) 22...e5=+ 23.Bb2 ed4 24.Bd4 Ne5 25.Kf2 Nc4?? (25...Nh5 26.Be5 Qe5 27.Bf7 Kh8 28.Rc8 Rc8 29.Bh5 Qh5 30.Kg3=+) 26.Rc4?? (better 26.Bf6 g6 27.Rc4 Rc4 28.Qc4+-) 26...Qe6 (26...Qe7!?=+) 27.Rc8= Rc8 28.Qe6 fe6 29.Bf6 (better 29.Ke3 Kf7 30.Ra2=) 29...g6?? (better 29...Rc2 30.Kg3 Rg2 31.Kg2 gf6-/+) 30.Ke3+- Kf7 31.Be5 (31.Ba1!? Ke7+-) 31...Rc5 32.f4 (32.Kd4 Rb5 33.Rc2 Rb4 34.Ke3 Rb5 35.Rc7 Kg8+-) 32...Rb5 33.Rc2 a5 (33...Rc5 34.Rc5 bc5 35.Kd3+-) 34.Rc7 Ke8 35.Rh7 a4 (35...Rb3 36.Kd2+-) 36.Rh8 (36.Rg7 a3+-) 36...Kd7 (36...Kf7 37.Kd3+-) 37.Ra8 (37.Rg8 a3 38.Rg6 Ra5+-) 37...Rb3 38.Kd4 b5 (38...Rb4 39.Kd3+-) 39.Kc5 Ke7 (39...Re3 40.Ra7 Kd8 41.Kd6+-) 40.Ra7 Kf8 41.Kd6 a3 42.Ke6 b4 (42...Kg8 43.Ra8 Kh7 44.Rh8) 43.Kf6 (43.Ra8) 43...Ke8+- 44.Kg6 (better 44.h5!? a2 45.hg6 Rg3+-) 44...Rg3 45.Kf5 Rg2 (45...Kd8 46.h5 a2 47.Ra2+-) 46.h5 Rh2 (46...Rc2 47.h6 Rh2 48.h7+-) 47.Kg6 (47.Ke6 Rd2 48.Rh7 Rd6 49.Bd6 b3 50.Rh8) 47...a2+- 48.h6 b3 49.h7 Kd8 50.h8Q Rh8 51.Bh8 Kc8 52.Bb2 Kb8 Black threatens to counter with Ra3 53.Ra3 (53.Ra3 Kc7 54.f5 Kc6 55.f6 Kd6 56.f7 Kc6 57.f8Q a1R 58.Ra1 Kb5 59.Qf5 Kc6 60.Qc8 Kb5 61.Bd4 b2 62.Qc5) 1-0. zembelek (2035) - tomasito (2015), Rated Blitz game, lichess.org, 2015.

3.e3 e6 4.Nf3 Ngf6 5.a3 c5 6.bc5 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nbd7).

3.Nf3 a5 4.ba5 Ra5 5.e3 Ngf6 6.Be2 e6 7.0-0 Bd6 8.d4 0-0 9.c4 c6 (9...dc4 10.Bc4 b5 11.Bd3=) 10.c5= Bc7 11.Nbd2 Ng4 12.h3 Nh6 13.Nb3 Ra8 14.g4 (14.Qc2!?+=) 14...Qe8 15.Bd3 e5 (15...f5 16.Qc2+=) 16.Ne5 (16.g5 e4 17.gh6 ed3 18.hg7 Kg7 19.Qd3 Nf6=) 16...Ne5= 17.de5 Be5 18.Bd4 f5 19.g5 Nf7 20.h4 (20.f4 Bc7=) 20...f4 (20...Qe6 21.f4 Bc7 22.h5+=) 21.Qh5 (21.g6 Nh6=) 21...g6+= 22.Qf3 (22.Bg6 hg6 23.Qg6 Kh8 24.Qh5 Kg7=) 22...Nd8 (22...fe3 23.fe3 Bg7 24.Bg7 Kg7 25.Qf4=) 23.Rae1 Bd4 (23...Ra2 24.ef4 Ra3 25.Re5+-) 24.ed4 (worse is 24.Nd4 fe3 25.Qe3 Qd7-/+) 24...Qf7 25.Bb1 Ne6 26.Re5 Ra3 27.Rd1 Qc7 28.Qe2 f3 29.Qb2 Ra4 30.Rde1 Rf4 (30...Nf4 31.R1e3 Qd7–+) 31.Re6?? (31.h5 Rg4 32.Kh1 Rh4 33.Kg1 Rh5 34.R1e3–+) 31...Rg4 (worse is 31...Be6 32.Nd2 Rg4 33.Kf1–+) 32.Kf1 Be6 33.Re6 Qh2 (33...Qh2 34.Re8 Kf7 35.Re7 Ke7 36.Qe2 fe2 37.Ke1 Qg1 38.Kd2 Qd1 39.Kc3 e1Q 40.Kb2 Qb1) 0–1. CountFromHolland – Vinci, playchess.de, 2004.

3.Nf3 c6 4.e3 Ngf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Nbd7).

3.f4 f6 4.e3 e5 5.Nc3 c6 6.fe5 fe5 7.a3 Ngf6 8.Nf3 Bd6 9.Be2 0-0 10.0-0 a6 11.Nh4 Nb6 12.d4 (12.Nf5 Bf5 13.Rf5 Qd7=+) 12...e4-/+ 13.Nf5 Bf5 14.Rf5 Qd7 15.Rf1 a5 16.b5 Nc8 (16...Nc4 17.Bc4 dc4 18.bc6 Qc6 19.Qe2=+) 17.bc6 bc6 18.Na4 Ne7 19.Nc5 Bc5 20.dc5 Nf5 21.Qd2 Nh4 (21...Rab8!? 22.Rab1 a4=) 22.Bf6+= Rf6 23.Rf6 gf6 24.Rf1 (24.c4 Qg7 25.g3 Qg5+-) 24...f5 (24...Qe7!? 25.g3 Nf3 26.Bf3 ef3=) 25.c4+- Rf8 (25...Rc8 26.cd5 (26.Qa5?! d4+=) 26...cd5 27.Qa5+-) 26.cd5+- Qd5?? (better 26...cd5 27.Bc4! Qg7 28.Bd5 Kh8+-) 27.Qc3 (27.Qa5?! Qa2 28.Kf2 f4+-) 27...Ng6 (27...Qd8 28.Bc4 Rf7+-) 28.Bc4 (28.Qa5?! Ne5+-) 28...f4 (28...a4 29.Bd5 cd5 30.c6+-) 29.Bd5 cd5 30.Qd2 Nh4 (30...Ne7 31.Rf4 Rf4 32.ef4+-) 31.Qd5 Kg7 32.Rf4 Rf4 33.ef4 1–0. Janek – Diftt, internet, 2019.

3.g3 b6 4.Bg2 e5 (better is 4...Ngf6!?=) 5.Bd5+= c6 (better is 5...Rb8 6.b5 a6+=) 6.Bc6+- Rb8 7.Be5 Bb7 8.Bb7 (8.Bb8?! Bc6 9.Nf3 Qb8=) 8...Rb7 (8...Ne5 9.Bg2 Bb4 10.c3+-) 9.Bb2 Bb4?? (9...Ngf6 10.b5+-) 10.Nf3 (better is 10.Bg7 Ne5 11.Bh8+-) 10...Ngf6+/- 11.0-0 0-0 12.d4 (12.d3 Re8+/-) 12...a5 13.a3 Bd6 14.Nbd2 a4 15.Nc4 Qe7 16.e4 Ne4 17.Re1 f5 18.d5 b5 19.Ncd2 Ndc5 20.Ne4 Ne4 21.Nd4+= Be5? 22.Nc6+- Qc5 23.Nd4?? Qd5 24.Rb1 f4?? 25.Qd3?? Bd4?? 26.Bd4?? Re8?? 27.f3 fg3?? 28.fe4+- Qg5 29.Qg3 Qg3 30.hg3 Rd7 31.c3 g5 32.Rb5 Rde7 33.Rg5 Kf8 34.Rf1 Rf7 35.Bc5 Ree7 36.Be7 Ke7 37.Rf7 Kf7 38.Rd5 Kg6 39.c4 h5 40.c5 Kh6 41.c6 (41...h4 42.gh4 Kg7 43.c7 Kg6 44.c8Q Kg7 45.Rd7 Kf6 46.Qc5 Kg6 47.Qg5) 1–0. Knight – Master1, mySchach.de, 2004.

3.g3 Nb6 4.e3 Nf6 5.Nf3 Nc4 6.Bd4 e5 7.Ne5 Nb2?? (better is 7...Ne5 8.Be5 Bb4=) 8.Bb2 +- 1–0. marekt – Unicorn5, ChessWorld.net, 2013.

3.h3 e5 4.Nf3 Bd6 5.g4 Ne7 6.Bg2 0-0 7.b5 b6 8.a3 Bb7 9.d4 Ng6 (9...e4 10.Nfd2-/+) 10.e3 (10.de5 Nde5 (10...Be5?! 11.Ne5 Nde5 12.Qd4=; 10...Nge5?! 11.Nd4=+) 11.Ne5 Ne5=+) 10...Re8 (10...e4 11.Nfd2-/+) 11.Kf1 (11.de5!? Nde5 12.Ne5 Ne5 13.Be5 Be5 14.Ra2-/+) 11...e4 12.Nfd2 Nh4 13.c4 Qg5 14.cd5 Bd5 (14...Qd5?! 15.Nc3 Qe6 16.Be4 Be4 17.Nde4= (worse 17.Nce4 Qd5 18.Qc2 Qb5 19.Ke1 Rad8=+)) 15.Nc3 Bb7 (15...Ng2 16.Kg2 Bb7 17.h4-/+) 16.Qc2 Increases the pressure on e4 (better 16.Nde4 Be4 17.Be4 Re4 18.Ne4 Qb5 19.Qe2+=) 16...f5 17.Qb3 Kh8 18.Qd1 (18.Qf7 Re7 19.Qh5 Qh5 20.gh5 a6-/+) 18...Ng2 19.Kg2 f4 20.h4 Qf6 21.Nf1 (better 21.Nc4!?-/+) 21...f3 22.Kg1 h5! 23.g5 (23.gh5 g5 Combination) 23...Qe6 24.Ng3 Qg4 25.Rh2 (25.Kh2 Kg8-/+) 25...Bg3 26.fg3 Qg3 27.Kh1 Rf8 28.Qf1 Rae8 29.Qf2 Qg4 30.Rg1 Qf5 31.a4 c5 32.Nd1 (32.bc6 Bc6 33.Ba3 Rg8–+) 32...cd4 33.Bd4 Nc5 34.Bc5 bc5 35.Nb2 Rd8 36.Nc4 Rd3 37.Na5 (37.Rc1–+) 37...Rfd8?? (better 37...Bd5–+) 38.Nb7-/+ Rd2?? (better 38...R8d7!? 39.Na5 Rd1-/+) 39.Qg3 (better 39.Nd8 Rf2 40.Rf2 Qh3 41.Rh2+-) 39...Rh2 40.Kh2 Rd2 41.Kh1 f2 (41...Qc8!? 42.Na5 Ra2+-) 42.Rf1 Re2? (42...c4 43.g6 Qf3 44.Kh2 Qg3 45.Kg3 c3+-) 43.Kg2 Qg4 (43...Kh7+-) 44.Nc5 (44.Qg4!? hg4 45.Nc5 Kh7 46.Rf2 Re3+-) 44...Qg3 45.Kg3 1–0. beatmeeasy (1985) – Mihir22 (1945), lichess.org, 2021.

(--> 1.b4 e5 2.a3 d5 3.Bb2 Nd7).

4.e3 Bd6 5.Nf3 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3).

4.e3 f6 5.Nf3 (--> 3.e3 e5 4.Nf3 f6 5.a3).

4.e3 Ngf6 5.Nf3 Bd6 6.c4 dc4 7.Bc4 e4 8.Nd4 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 dc4 7.Nd4 e4 8.Bc4).

4.e3 Ngf6 5.Nf3 Bd6 6.d4 e4 7.Nfd2 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.d4 e4 7.Nfd2).

4.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7).

4.c3 a6 5.g3 c5 6.Bg2 Ngf6 7.bc5 Bc5 8.d4 ed4 (8...Bd6 9.Ba3 Ba3 10.Ra3+=) 9.cd4 Bb4 10.Bc3 Bc3 (10...Bd6 11.Qb3=) 11.Nc3 Attacks the isolani on d5 11...Nb6 (11...Qa5 12.Qd2 Nb6 13.Ne4 Qd2 14.Nd2=) 12.e3 (12.a5!? Nc4 13.Nd5 Nd5 14.Qa4 Bd7 15.Qc4+/-) 12...Nc4 13.Nge2 0-0 (13...Be6 14.Rc1=) 14.0-0 (14.Qb3 Na5 15.Qa2 Be6=) 14...Bg4 (14...Bf5 15.Nf4 Be4 16.Qe2 Bg2 17.Kg2=) 15.h3 (15.Qd3 Rc8+=) 15...Bf5 16.Nf4 Increasing the pressure on the isolated pawn on d5 16...Be4 17.Qe2 Bg2 18.Kg2 Rc8 19.Rfc1 Re8 20.Kh2 Qa5 (20...g5 21.Nd3=) 21.Ncd5+= Nd5 22.Rc4 Nf4 23.Rc8 Rc8 (23...Ne2?? 24.Re8) 24.ef4 b5 (24...Qb4 25.Qd1+=) 25.Rc1!? Rd8 (25...Rc1 26.Qe8 Mate attack) 26.ab5 ab5 27.Rc5 Qb4 28.Rb5 Qd4 29.Re5 h6 30.Re4 Qb6 31.Re8 Re8 32.Qe8 Kh7 33.Qe4 Kg8 34.Kg2 Qf6 35.g4 g6 36.Qe8 Kh7 37.Qe4 Kh8 (37...Kg8 38.Kg3 Qc3 39.Qe3 Qc4+/-) 38.Kg3 Qc3 39.Qf3 Qe1 40.Qe3 Qa1? (better is 40...Qd1+/-) 41.Qe8 Kg7 42.Qe5 Qe5 43.fe5 f6 (43...Kf8 44.g5! h5 45.f4+-) 44.f4 (44.e6 Kf8 45.f4 Ke7+-) 44...g5 (44...Kf7 45.Kf3 fe5 46.fe5 Ke7+-) 45.e6 Kf8 46.f5 Ke7 47.h4 (47.Kf3 Kd6 48.Ke3 Ke7+-) 47...Kd6 48.h5 Ke7 49.Kf3 Kd6 50.Ke4 Kc6 51.Kd4 (better is 51.e7!? Kd7 52.Kd5 Ke7+-) 51...Kd6 52.Kc4 Kc6 53.Kb4 Kd6 54.Kb5 Ke7 55.Kb6 Kd6 56.Kb5 Ke7 57.Kc5 Ke8 58.Kd6 Kd8 59.e7 Ke8 60.Kc7 Ke7 61.Kc6 Kf7 White now must not overlook the idea Kc7 62.Kd6 Kf8 63.Ke6 Kg7 (63...Ke8 64.Kf6 Kf8 65.Kg6 Ke7 66.Kg7 Kd6 67.Kh6 Kd5 68.Kg6 Ke4 69.Kg5 Ke5 70.h6 Ke4 71.h7 Kf3 72.f6 Ke4 73.f7 Ke3 74.h8Q Kd3 75.Qb2 Ke4 76.Qd2 Ke5 77.f8Q Ke6 78.Qdd6) 64.Ke7 Kg8 (64...Kh7 65.Kf6 Kh8 66.Ke7 Kh7 67.f6 Kh8 68.f7 Kg7 69.f8Q Kh7 70.Qf5 Kg7 71.Qg6 Kh8 72.Qh6 Kg8 73.Qg5 Kh7 74.Kf6 Kh8 75.Qg7) 65.Kf6 Kh7 (65...Kf8 66.Kg6 Ke7 67.Kg7 Kd7 68.Kh6 Kd6 69.Kg6 Ke5 70.h6 Kf4 71.f6 Kg4 72.f7 Kg3 73.Kg5 Kg2 74.f8Q Kg1 75.h7 Kg2 76.Qa8 Kf2 77.Qe4 Kf1 78.Qe3 Kg2 79.h8Q Kf1 80.Qhh3) 66.Kf7 (66.Ke7 Kg7 67.f6 Kg8 68.f7 Kg7 69.f8Q Kh7 70.Qb8 Kg7 71.Qc7 Kg8 72.Kf6 Kf8 73.Qd8) 66...Kh8+- 67.Kg6 1–0. De Visser,Arno – Greku, 1995.

4.e3 a6 5.Be2 (5.b5 Ngf6=+) 5...f5 (5...Bb4!? 6.f4 Qh4 7.g3 Qe7-/+) 6.Bh5 (6.Nf3 Bd6=) 6...g6=+ 7.Be2 Bb4 8.Nf3 Bd6 9.0-0 Ngf6 10.Ng5 Qe7 11.f4 h6 (11...ef4 12.ef4 0-0 13.Nh3-/+) 12.Nh3 e4 13.Nc3 Nb6 (13...0-0!?-/+) 14.a5= Nc4 15.Nd5 (15.Bc4 dc4 16.Nd5 Nd5 17.Bh8 Be6=) 15...Nb2=+ 16.Qb1?? (better 16.Ne7 Nd1 17.Nc8 Rc8 18.Rfd1=+) 16...Nd5–+ 17.Qb2 Rf8 (17...0-0 18.Bc4 Be6 19.Rfb1–+) 18.Bc4 Nb4 19.Nf2 Bd7 (better 19...g5!? 20.Nh3–+) 20.c3 Nc6 21.Qb7 Rb8 (better 21...Ra7!? 22.Qb3 Bc5–+) 22.Qa6-/+ g5 23.Bd5 Nd8 24.Qa7 (24.Qe2 Be6 25.Be6 Ne6-/+) 24...Rb5–+ 25.c4 (25.Bc4 Rb2 26.d4 gf4 27.ef4 c5–+) 25...Rb2 26.a6 (26.Qd4 Rc2 27.Ne4 fe4 28.fg5–+) 26...Rd2 (26...gf4?! 27.Qd4 Be5 28.Qb2 Bb2 29.a7 Ba1 30.Ra1–+) 27.Qb8 Rd5?? (better 27...c6 28.a7 Bb8 29.ab8Q cd5 30.cd5 Rd5–+) 28.cd5+- gf4? (better 28...c6 29.a7 cd5+-) 29.a7+- fe3 (29...c6 30.Qb3 fe3 31.Ne4 Qe4=) 30.Nd1?? (better 30.Ne4 fe4 31.a8Q Rf1 32.Rf1+-) 30...e2-/+ 31.Re1?? (31.Ne3 Qh4 (31...ef1R?! 32.Kf1 Bc5 33.a8Q Be3 34.Rb1–+; 31...ef1Q?! 32.Kf1 Bc5 33.a8Q Be3 34.Rb1–+; 31...ef1N?! 32.Kf1 Bc5 33.a8Q Be3 34.Rb1–+; 31...ef1B?! 32.Kf1 Bc5 33.a8Q Be3 34.Qb2–+) 32.h3 ef1R 33.Rf1 Bc5–+) 31...Bc5 (better 31...Bh2 32.Kh1 Bg3–+) 32.Nf2 (better 32.Kh1 Ba7 33.Ra7 ed1N 34.Rd1–+) 32...Qh4?? (better 32...Bf2 33.Kh1 Ba7 34.Ra7 Qc5 35.Qc7 Qc7 36.Rc7 Bb5–+) 33.Qd8?? (better 33.Re2 Ba7 34.Ra7+- (34.Qa7?! c6+-)) 33...Qd8 (better 33...Kd8 34.a8Q Ke7–+) 34.a8Q-/+ Qa8 35.Ra8 Ke7 36.Rf8 Kf8 37.Re2 Ke7 38.Kf1? (38.Kh1 Kd6-/+) 38...Kd6 (better 38...Bb5 39.Nd1 Bd4–+) 39.Rd2?? (39.Rb2 Kd5 40.Nh3 Bd4-/+) 39...Ke5 (better 39...e3!? 40.Ne4 fe4 41.Rb2–+) 40.Nh3? (40.Rb2 Kd5 41.Nh3 Bd4-/+) 40...Bb4 (better 40...Bb5 41.Re2 Be2 42.Ke2 Bd6–+) 41.Rc2-/+ Kd6 (better 41...f4!? 42.Rc7 Bb5 43.Kg1 e3–+) 42.Nf4= Ba5 43.Kf2 Ke5 44.g3 Bb6 45.Ke2 h5 46.h4 (46.Nh5 Bb5 Double attack (46...Kd5 Deflection)) 46...Be8 47.Rd2 (47.Ra2 Bb5 48.Ke1 Bc5=) 47...Bf7 The isolani on d5 becomes a target (47...Bb5 48.Kd1 Bc4=) 48.d6? (better 48.Rb2!?=) 48...cd6-/+ 49.Kd1? (49.Rb2 Bc4 50.Ke1 Ba5 51.Kf2 Bc3-/+) 49...d5 Black plans d4 (better 49...Be3!? 50.Rb2 Bf4 51.Rb5 d5 52.gf4 Kf4 53.Rb7–+) 50.Kc2? (better 50.Rb2 Bc5 51.Rb7-/+) 50…d4 0–1. Akrapovik – I_has_all_your_space, lichess.org, 2020.

4.Be5 Nc6 5.d4 +=.

4.Nf3 Bd6 +=.

4.Na3 Nb6 5.Qc2 Qd6 6.Nc4 Qb4 +=.

4.Na3 e5 5.Nc4 Bb4 6.Ne5 Ne5 7.Be5 Nf6 (better is 7...Bf8!?=) 8.Qa4+/- (8.Qa4 Nd7 9.Bg7+/-) 1–0. Woelfelschneider,Peter – Robers, 2009.

4.e3 b5 5.a4 c6 6.ab5 cb5 7.Nc3 Ne5 (better is 7...Rb8!? 8.Ra7 e5=) 8.Nb5+/- Nd3?? (better is 8...Bd7 9.Be5 Bb5+/-) 9.Bd3+- cd3 10.Rc1 (10.Ra7?! Ra7 11.Na7 Bb7+=; 10.Na7?! Bb7 11.f3 Qd7+=) 10...f6 (10...Qd7 11.Nc7 Kd8 12.Na8+-) 11.Nc7 Kf7 12.Na8 Bb7 13.Nc7 Bg2 (13...e6 14.Qg4 Qe7 15.Ne6+-) 14.Qb3 Kg6 15.Ne6 Qa8 16.Nf4 Kh6 17.Qf7 g6 18.Ng2 Qg2 19.Qf8 Kh5 20.Rc5 g5 (20...f5 21.Rf5! gf5 22.Qf5 Kh6 23.Bh8 a6+-) 21.Qf7 Kh6 22.h4 (22.h4 Qf2 23.Kf2 e5 24.hg5 Kg5 25.Qh5#) 1–0. Woelfelschneider,Peter – DieInge, 2009.

4.e3 Nb6 5.Nf3 Bf5 6.Na3 Bd3 7.Rc1 (7.Ne5 e6+=) 7...Qd5 (7...e6 8.Bd4 Bf1 9.Rf1+=) 8.Bd3+= Qd3 (8...cd3!? 9.Rc7 Qa2+=) 9.Ne5+= Can c4 get defended? 9...Qd5 10.0-0 (worse is 10.Nac4 f6 11.Nb6 ab6+=) 10...e6 11.e4 (11.Nec4!? c6 12.d3+=) 11...Qe4+= 12.Nb5 Bd6 (better is 12...Rc8!? 13.Na7 Rd8+=) 13.Nc4+= Nc4 (13...Qc4 14.Rc4) 14.Bg7+- Qd5 15.Nd6 cd6 16.Bh8 e5?? (better is 16...Nd2 17.Re1 Kd7+-) 17.Qg4 f6 (17...Nh6 18.Qc4 Qc4 19.Rc4+-) 18.Rc4 b5 (18...f5 19.Qh4 b5+-) 19.Rc7 Qf7 20.Rf7 Kf7 21.Rc1 Ne7 22.Qg7 Ke6 23.Qf6 Kd7 24.d4 e4 25.d5! Nd5 Deflection from f5 (25...Rc8 26.Qe6 Kd8 27.Qd6 Ke8 28.Rc8 Nc8 29.Qe6 Kf8 30.Qc8 Kf7 31.Qd7 Kg6 32.g4 Kg5 33.Qf5 Kh4 34.Qh5) 26.Qf5 Theme: Double Attack 26...Ke7 (26...Ke8 27.Qd5 Rd8 28.Rc7 Rd7 29.Qe6 Kf8 30.Rc8 Rd8 31.Rd8) 27.Qd5 Rh8 (27...Rb8 28.Rc7 Kd8 29.Qd6 Ke8 30.Qe7) 28.Rc7 Kf6 29.Qd6 Kf5 30.Rc5 Kg4 31.Qg3 1–0. Woelfelschneider,Peter – Ramin, 2010.

4.e4 e6 (4...Nb6 5.Na3 Nf6 6.Qc2 e6+=; 4...b5 5.Nc3 a6 6.a4 Rb8+=; 4...a5 5.ba5 Ra5 6.Bc4 Nb6+=; 4...Ngf6 5.Bc4 e6 6.e5 Nd5+=) 5.b5 (5.Bc4 A) 5...Bb4?? 6.Bg7 Qh4 7.Qe2+- (7.Bh8?! Qe4 8.Be2 Qg2+-); B) 5...Qg5+= 6.Nf3 Qg4+=; C) 5...Ngf6 6.e5 Nd5+=) 5...Ngf6 (5...Nc5 6.Bc4 Ne4 7.Nf3-/+) 6.Bc4 (6.e5 Nd5+=) 6...Ne4-/+ 7.Nf3 a6 (7...Nb6 8.Be2-/+) 8.ba6 ba6 (8...b6 9.0-0-/+) 9.Nc3 Ng5 10.0-0 Rb8 11.Rb1 Nf3 12.Qf3 Ne5 13.Qe2 Nc4 14.Qc4 Rb4 (14...Qd2? 15.Rfd1 Rb2 16.Rb2 (16.Rd2?! Rd2 17.Qc7 Rd8+-) 16...Qb2 17.Qc7+-) 15.Qc6 (15.Qe2 Bd6-/+) 15...Qd7 16.Qf3 Bb7 (worse is 16...Qd2 17.Rfd1 Bb7 18.Rd2 Bf3 19.gf3+=) 17.Qg3 f5 18.h3 Bd6 19.f4 0-0 20.Ba3 Rb1 21.Rb1 Ba3 22.Rb7 Bc5 (22...Qd2?! 23.Rc7 Qd4 24.Kh2-/+) 23.Kh2 Bb6 0–1. Bonatti,Aldo (2020) – Wallner,Josef (2330), ICCF WSTT/3/06/4, 2006.

4.d4 Nf6 5.a4 Bd7 (5...e6 6.a5 Nbd7 7.Ra4+=) 6.b5 Nc4 (6...a6 7.a5 Nc4 8.Bc4 dc4 9.ba6 Ra6 10.Nf3=) 7.Bc1 (7.Bc4 dc4 8.Qe2 a6 9.Qc4 Be6=) 7...Bg4 (7...a6 8.Bc4 dc4 9.ba6 Ra6 10.Nc3+=) 8.Be2 (8.f3 Bd7=) 8...Be2+= 9.Ne2 e5 10.0-0 Bd6 11.Nd2 Nd2 12.Bd2 0-0 13.Nc3 (13.de5!? Be5 14.Bc3=) 13...c6+= 14.bc6 bc6 15.Qe2 a5 16.e4?? (16.f4 ed4 17.ed4 Re8+=) 16...de4?? (better is 16...ed4 17.Nd1 de4–+) 17.Ne4 Ne4 18.Qe4 Qc7 (18...ed4 19.Qc6 Rc8 20.Qa6+=) 19.h3 (19.Bc3 f5 20.Qh4 ed4 21.Bd4 f4=) 19...g6 (19...ed4 20.Rfe1 Qd7 21.Qd3-/+) 20.c4 (20.Bc3 f5 21.Qd3 e4 22.Qc4 Kg7+=) 20...Rfe8 (20...ed4!? 21.Rfe1 f6-/+) 21.c5= Bf8 22.Bf4?? (22.Bc3=) 22...Qd7 (22...ef4!? 23.Qd3–+) 23.Rab1?? (better is 23.de5 Rad8 24.Rfc1+=) 23...Qd4 (better is 23...ef4 24.Qf4 Rad8–+) 24.Qd4-/+ ed4 25.Rb6 Re6 26.Rfb1? (26.Rc1-/+) 26...Bg7?? (better is 26...Bc5 27.Rb8 Rb8 28.Rb8 Kg7–+) 27.Rb8+= Re8 28.Ra8 Ra8 29.Bd6 (29.Rb6 Rc8-/+) 29...h6 30.Kf1 Kh7 (better is 30...Re8!?-/+) 31.Ke2= g5 32.Rb6 Re8 33.Kd3 (33.Kd2+=) 33...Re6? (better is 33...Re1 34.Rc6 Ra1=) 34.f3?? (better is 34.Rc6!? Kg6 35.Rb6+-) 34...Bf6 (34...Re3 35.Kd2-/+) 35.Ra6 (better is 35.Rc6!? Re3 36.Kd2=) 35...Bd8?? (better is 35...Re3 36.Kd2 Ra3 37.Rc6 Ra4+=) 36.Ra8 1–0. Wuenschmann,Bernd – Mueller,Ho3, Dresden GER, 2013.

4.Nf3 c6 5.Be2 (5.a4 Nf6=) 5...Bg4 6.0-0 Qc7 (6...e6 7.a3=) 7.Be5+= Qd7 8.Nc3 (8.a3 Nf6+=) 8...f6 9.Bg3 (9.Bd4 Nh6=) 9...e5 (9...Nh6 10.b5=) 10.Ne5 Be2 11.Nd7 Bd1 12.Nb6 (worse 12.Nf8 Bg4 13.f3 Bc8 14.Nh7 Rh7-/+) 12...ab6 13.Rfd1 Bb4 14.Rdb1 (14.Ne2 b5=) 14...Ba5 (14...Bc3 15.dc3 Ra6 16.a4=+) 15.e4 Ne7 16.Rb3 (16.ed5 Bc3 17.dc3 Nd5= (worse 17...cd5 18.Rb6 Kf7 19.Rb7+-)) 16...d4 (16...Bc3!? 17.dc3 de4 18.Rb6 0-0-0=) 17.Ne2+= c5 18.Bc7 (18.a4 Kd7= (worse 18...Bd2 19.Rb6 0-0-0 20.a5+-)) 18...Ra6 (worse 18...Bd2 19.Bb6 c4 20.Rg3+=) 19.c3 (19.d3 Kd7 20.Bf4 Re8=) 19...d3 (19...Kd7 20.Bg3 d3 21.Nf4=) 20.Ng3 0-0 (20...c4 21.Rb5=) 21.a4 (21.c4 Bd2 22.Bd6 Rd8 23.Be7 Rd7+=) 21...Nc6 22.Nf5 Rf7 (22...Re8 23.f3+=) 23.Bg3 Rd7 24.Nd6 (24.Rab1 Kf7+=) 24...Ne5 (24...h5 25.h4+=) 25.Be5+- fe5 26.Nc4 Kf7?? (better 26...Re7+-) 27.Ne5+- Ke6 (27...Ke7 28.Nd7 c4 29.Rb5 Kd7 30.Rd5 Ke6 31.Rd8+-) 28.Nd7 Kd7 29.c4 Bd2 (29...Ke6 30.Rd3 g5+-) 30.Rd3 (30.Rd3 Ke6 31.Rd2+-) 1–0. Janek – Styull, internet free game, 2017.

4.Nf3 Nf6 5.a3 e6 6.d3 Bd6 7.c4+= dc4 8.dc4 Be7 9.Be2 (9.Qd8!? Bd8 10.Nc3+=) 9...Qd1= 10.Kd1 Bd7 (10...c5 11.bc5 Nbd7 12.Bd4=) 11.Nc3 Ba4 (11...0-0-0 12.Ne5 Na4 13.Na4 Ba4 14.Ke1+=) 12.Na4 Na4 13.Bd4 0-0-0 (13...c5 14.bc5 Nc5 15.Ke1=) 14.Kc2 c5 15.Be5 Nd7 (15...Ng4 16.Kb3 Nb6 17.Bg3+=) 16.Kb3+= Ne5? (better 16...Nab6!?+=) 17.Ne5+- (17.Ka4?! Nf3 18.Bf3 cb4 19.ab4 Rd2=) 17...Nb6 (17...Rd2 18.Nf7 (18.Ka4?! Re2 19.Nd3 Rd8=+) 18...Re8 19.Rhe1+- (19.Ka4?! Re2 20.bc5 Bc5+=)) 18.Nf7 Rhf8 (18...Rd2 19.Nh8 Re2 20.Rhf1+-) 19.Nd8 Rf2 20.Bf3 (20.Ne6 Re2 21.Rae1 Rg2+-) 20...Kd8 (20...Bd8 21.Bg4 (21.bc5?! Nd7+/-) 21...Rf6 22.Rhf1+- (22.bc5?! Nd7+-)) 21.Rhd1 (21.Bb7!? Nd7+-) 21...Kc7 22.Rac1 (22.Rf1 Bh4+-) 22...a6 (better 22...Bf6 23.Rb1 Bg5+-) 23.Rc2?? (better 23.Rf1 Rf1 24.Rf1 cb4 25.ab4+-) 23...Rc2=+ 24.Kc2 Nc4 25.Bg4?? (25.Kc3 Ne3 26.Re1 cb4 27.Kd3 ba3 28.Ke3-/+) 25...Ne3-+ 26.Kb3 (26.Kb1 Ng4 27.Re1 Kd7 28.Rd1 Ke8-+) 26...Ng4 (26...c4 27.Ka2 Ng4 28.Re1-+) 27.Re1 Kd7 28.h3 Nf6 29.Re3 (29.bc5 Bc5 30.Rd1 Nd5-+) 29...Nd5 (29...cb4!? 30.a4-+) 30.Rg3 Bf6 (30...cb4 31.ab4 g6 32.b5-+) 31.Rf3 (31.bc5 Kc6-+) 31...cb4 32.ab4 b6 33.Kc4 (33.g4 Kc6 34.Rf1 Bc3-+) 33...Kc6 (33...b5 34.Kb3-+) 34.Rg3 (34.Rf2 Be7 35.b5 ab5 36.Kb3 e5-+) 34...b5 35.Kb3 Kd6 (35...g6 36.Rf3-+) 36.Rf3 (36.h4 h5-+) 36...Ke5 (36...Ke7 37.Rf2 Bc3 38.Ra2 Nb4 39.Ra5-+) 37.g3 (37.Rf2 Be7-+) 37...Ke4 (better 37...g6-+) 38.Rf4 (38.Rf2 Be7 39.Rf7 g5-+) 38...Ke3 (38...Nf4 39.gf4 Kf4 40.Ka2-+) 39.Rg4 (39.Rf1 Ke2 40.Rc1-+) 39...Kf3 (39...g5 40.h4 h6 41.Rg5 hg5 42.h5-+) 40.Rh4 Bh4 41.gh4 Kg3 42.h5 Kh3 43.Kc2 g5 44.hg6 hg6 45.Kd3 Nb4 46.Kd4 Nd5 (better 46...g5 47.Ke5-+) 47.Kd3 g5 48.Kc2 g4 49.Kb3 g3 50.Kc2 (50.Kb2 g2 51.Kc1 g1Q 52.Kb2 Qf2 53.Ka3 Qc5 54.Kb2 Nb4 55.Kb3 Qc4 56.Kb2 Qc2 57.Ka1 Qc1) 50...g2 51.Kd3 (51.Kb3 g1Q 52.Kc2 Qe1 53.Kb2 Qd2 54.Ka1 e5 55.Kb1 Nc3 56.Ka1 Qc1) 51...g1Q 52.Kc2 Qe3 (52...Qe3 53.Kb2 Qd2 54.Ka1 e5 55.Kb1 Nc3 56.Ka1 Qc1; 52...Qf2 53.Kb3 b4 54.Kc4 Qc2 55.Kd4 Qc3 56.Ke4 Qe3) 0-1. ClayPigeons (2165) - peitl (2175), Rated Bullet game, lichess.org, 2021.

4.Nf3 h6 5.a4 Bg4 (5...Nf6 6.a5 Nbd7 7.c4+=) 6.Be2 (6.h3 Bf5+-) 6...Bf3 (6...Nf6 7.Nc3=) 7.Bf3 Nc4 (7...Nf6 8.a5 Nc4 9.Bc3+=) 8.Bd4 (better 8.Bc3 Nf6 9.d3+-) 8...f6? (better 8...e5 9.Bc3 e4+=) 9.Bh5 Kd7 10.0-0 (10.Nc3 e6 11.b5 Bb4+-) 10...e6 11.d3 Nd6 12.c4! Ne7 (12...dc4 13.dc4 Combination) 13.Nd2 g6 (13...Kc8 14.Bc3+-) 14.Bf6 gh5 (14...Rg8 15.Bf3 Bg7 16.Bg7 Rg7+-) 15.Bh8 Qe8 16.cd5 (16.e4!? Ng6 17.Bc3 dc4 18.dc4 Nf4+-) 16...Nd5 17.Ne4 (17.b5!? Be7 18.Be5 Qf7+-) 17...Nf5 18.a5 Bb4 19.Be5 a6 (19...Bd6 20.Nd6 cd6 21.Bb2+-) 20.Nf6 Nf6 21.Bf6 Qg6 (21...Be7 22.Be7 Qe7 23.Qa4 c6 24.Rab1+-) 22.Qa4 c6 (22...Kc8+-) 23.Qb4 Nd6 (23...Rg8 24.Qb7 Kd6 25.g3 Qf6 26.Rfc1+-) 24.Be5 Nb5 25.f4 Rg8 26.Rf2 h4 27.e4 h3 28.g3 Rf8 (28...Re8+-) 29.Qf8 Qe8 30.Qh6 Qf7 31.f5 ef5 32.Rf5 Qe7 33.Qh3 Kc8 (33...Kd8 34.Bf6 Nd4 35.Be7 Ke7 36.Qh4 Ke6 37.Qf6 Kd7 38.Qd4 Kc7 39.Rf7 Kb8 40.Qc5 b5 41.Qf8) 34.Rf8 1–0. DEFFM – GuestYWLC, freechess.org, 2018.

4.a3 Qb6 5.c3 (5.Nc3 Ngf6= (< 5...cb4 6.Nd5 Qd6 7.Nb4+/-)) 5...Ngf6 (5...a5 6.Qc2=+) 6.Nf3 Ne4 (6...e5 7.d4 cd4 8.cd4=+) 7.d3 Nd6 8.Be2 g6 (better is 8...e5!?=) 9.c4+/- Rg8 10.b5 (better is 10.cd5!? cb4 11.0-0+/-) 10...Bg7 11.Bg7 Rg7 12.0-0 Nf5 (12...dc4 13.dc4 Qa5 14.Qc2+=) 13.Nc3 (13.cd5 Qb5 14.Nbd2+/-) 13...Qd6? (better is 13...d4!? 14.Nd5 Qd6+=) 14.Nd5 b6 15.d4 Bb7 16.dc5 (16.e4!? Nd4 17.Nd4 cd4 18.Qd4 e5+/-) 16...Nc5+/- 17.Nc3 (17.Qc2 Bd5 18.cd5 Qd5+/-) 17...0-0-0 (17...Qd1 18.Rfd1 Rc8 19.Nd4+=) 18.Qd6 (18.Qc2 Qd7+/-) 18...ed6? (better is 18...Nd6!? 19.Rad1 Bf3 20.Bf3 e6=) 19.a4 (better is 19.Rad1+/-) 19...a5? (better is 19...h6!?+/-) 20.ba6+- Na6 21.Rfb1 Kc7 22.Nd5 (22.Ra2!? Nc5+-) 22...Bd5 23.cd5 Nc5 24.a5 ba5 25.Ra5 Kd7? (25...Rb8 26.Ra7 Kc8 27.Rba1+-) 26.Ra7 (better is 26.g4!? Nh6+-) 26...Ke8 27.Bb5 Kf8 28.Be2?? (28...Ke8 29.Kf1+-; better is 28.Rba1 h5 29.e4+-) 1–0. Royalfork – Itchy, Live Game Caissa's Web, 2004.

4.a3 e5 5.bc5 Bc5 6.d4 =.

4.b5 b6 5.c4 e6 6.Nf3 Ngf6 7.Be2 Bd6 8.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6).

4.bc5 Qa5 =.

4.Bb5 f6 5.Qh5 g6 6.Qg4 Ne7 7.a3 c6 8.Be2 f5 (8...Nb6 9.Qf3 Nf5 10.e4 de4 11.Qe4-/+) 9.Qg5 Bg7 10.Nf3 h6 11.Qg3 Can e5 get defended? (11.Qh4!?=+) 11...f4!-/+ 12.ef4 ef4 13.Qf4? (better 13.Bg7 fg3 14.Bh8 gf2 15.Kf2-/+) 13...Bb2–+ 14.c3 (14.Ra2 Bg7 15.0-0–+) 14...Ba1 15.Nd4 Bb2 (better 15...Nb6–+) 16.Ne6-/+ Qb6 (better 16...Nb6 17.Nd8 Kd8-/+) 17.Bd3?? (17.Ng7 Kd8 18.Ne6 Ke8 19.Ng7 Kd8 20.Ne6 Ke8 21.Ng7 Kd8=) 17...g5 (better 17...c5 18.Nc7 Kd8 19.Na8 Qe6 20.Be2 Qe4 21.Qe4 de4 22.bc5 Nc5–+) 18.Qf3?? (better 18.Ng7 Kd8 19.Ne6 Ke8 20.Ng7 Kd8 21.Ne6 Ke8 22.Ng7 Kd8=) 18...Ne5–+ 19.Qh5 Kd7 20.Qh3 (20.Nc5 Kd8 21.Qd1 Nd3 22.Nd3 Ba1–+) 20...Nd3 (better 20...Kd6–+) 21.Ke2 (21.Qd3 Ke6 22.Qc2 Ba3 23.Na3 a5–+) 21...Nf4! 22.Nf4 Kd6 23.Qg3 Nf5 24.Kf1 (24.Qf3 Qb5 25.Qd3 Re8 26.Kd1 gf4 27.Qb5 cb5–+) 24...Qb5 (better 24...Ng3 25.hg3 gf4 26.g4–+) 25.Nd3 Ke6 (better 25...Ng3 26.hg3 Qd3 27.Kg1 Qb1 28.Kh2 Qd3–+) 26.Qf3 Bd7 (better 26...Re8!? 27.Kg1 Nh4 28.Qg3–+) 27.g4 (27.Qe2 Kf6 28.Nb2 Qe2 29.Ke2 Rhe8 30.Kf1–+) 27...Nh4 28.Qe3 (28.Qe2 Kf6 29.Nb2 Qe2 30.Ke2 Bg4 31.Kd3 Bf5 32.Kd4 Be4–+) 28...Kf7 29.Kg1 (29.h3 Rae8 30.Qg3 h5–+) 29...Rhe8 30.Qg3 Bc3! 31.Nc3 (31.Nc3 Qd3 Combination; 31.dc3 Bg4 Combination) 31...Qc4 32.h3 Re6 33.Qc7 (33.f4 gf4 34.Qf4 Qf4 35.Nf4 Re1 36.Kh2 Nf3 37.Kg2 Rh1 38.Kh1 Nd2 39.Kg2–+) 33...Qd3 34.Qd7 Re7 35.Qd6 (35.Qe7 Ke7 36.Nd1 Qd2 37.Kh2 Qf4 38.Kg1 Rf8 39.Rh2 Qc1 40.f4 Qd1 41.Kf2 Rf4 42.Ke3 d4) 35...Re1 36.Kh2 Rh1 37.Kh1 Qf1 38.Kh2 Qg2 0–1. Atotheking – alewinny, lichess.org, 2019.

4.c4 Bb4 5.a3 Bd6 6.cd5 Ngf6 7.d3 (7.Nc3 0-0=+) 7...0-0 (7...Nd5 8.d4-/+) 8.Nf3 (8.Nc3!?=+) 8...Nd5-/+ 9.Be2 b5 (9...Qf6 10.Nbd2-/+) 10.0-0 Bb7 11.Qc2 Qe7 (11...c5 12.Nbd2-/+) 12.Nc3 (12.d4 a6-/+) 12...Nc3 13.Qc3 Nb6 14.e4 (14.d4 Na4 15.Qb3 ed4 16.Bd4 a6–+) 14...Na4–+ 15.Qc2 Nb2 16.Qb2 c6 17.d4 (17.a4 b4–+) 17...ed4 18.Qd4 (18.Bd3 Rad8–+) 18...Ba3 19.Rfd1 a5 20.Qd7 Rfd8 (20...Qe4 21.Qb7 Qe2 22.Nd4–+) 21.Qf5 g6 22.Qf4 1–0. Goldmund,Heike – Pech,Jaroslav, FICGS, 2015.

4.c4 Bb4 5.Qb3 Bd6 6.cd5 Ne7 7.Nf3 Nc5 (7...0-0 8.d4 e4 9.Nfd2=+) 8.Qd1 Nd5 9.Ne5 (9.Be5 0-0 10.d4 Ne4 11.Bd6 Nd6=) 9...0-0 10.Bc4 (10.Nc4 Be7 11.d4 Ne6=+) 10...Be6 11.Na3 (11.0-0 Qe7=+) 11...a6 12.0-0 b5 13.Bb3 Nb3 14.ab3 c5 15.Rc1 (15.f4 Re8-/+) 15...Nb4 16.d4? (16.Ra1 Be5 17.Be5 Qd5-/+) 16...Rc8?? (better 16...Be5 17.de5 Qd1 18.Rfd1 Bb3–+) 17.Nd3-/+ cd4 18.ed4 (better 18.Rc8!? Bc8 19.Nb4 Bb4 20.Nc2-/+) 18...Nd3 19.Qd3 Qd7 (19...Qh4 20.g3 Qh5 21.Nb1-/+) 20.Nb1 (20.d5 Bf5 21.Qd4 f6=+) 20...Bf5 21.Qd2 Rc7 22.Rc7 Qc7 23.h3 Re8 24.Rc1 Qb8 Black prepares b4 25.Qc3 b4 26.Qc4 Qb7 27.Nd2 (better 27.Qf1 Bf4 28.Rc5–+) 27...Be6?? (better 27...Bf4 28.Nf1 Bc1 29.Qc1 Be6–+) 28.Qd3 Bd5 29.Nf3 Bf3 (29...Be4!? 30.Qe2 Bf4-/+) 30.Qf3=+ Qf3 31.gf3 a5 32.d5 f6 33.Rc6 (33.Kf1 Rb8=+) 33...Rd8 (33...Bf8 34.Ra6 Re2 35.Bd4–+) 34.Ra6 (better 34.Rc1=+) 34...Bf4?? (better 34...Bc5 35.Ra5 Rd5-/+) 35.Ra5+= Bd6 36.Rb5 Kf7 37.Bd4 Kg6 38.Kg2 Kf5 39.Bc5 h5 (39...Bc5 40.Rc5 Ke5 41.Rb5+=) 40.Bd6+- Rd6 41.Rb4 Rd5 42.Kg3 g5 43.h4 (43.Rb8 Ke6+=) 43...Rd2 44.Rb5 Kg6 45.Rb4 Rd6 46.Rc4 Rb6 47.b4 Rb5 48.hg5 fg5 (better 48...Rg5!? 49.Kh4 Rb5+=) 49.f4+- g4 50.Kh4 (50.Rc6 Kf7 51.Rc5 Rb4 52.Rh5 Rb2+-) 50...Rd5 (50...Kf6 51.f3! gf3 52.Kg3+-) 51.Rc6 (51.Rc5!? Rd4 52.f5 Kf6+-) 51...Kg7 52.Rc5 Rd3 (52...Rd4 53.b5 Rf4 54.Rh5 Rf2 55.Kg4+-) 53.Kh5 (53.Kh5 Rd4 54.Kg5 Rb4 55.Rc7 Kf8 56.f5+-) 1–0. Mely (2225) – claymil (2020), ChessWorld.net, 2016.

4.c4 dc4 5.b5 g6 (5...Ngf6!?=+) 6.Bc4 Bg7 (6...Bd6 7.Nc3=) 7.Nf3 Nb6 (better 7...Nh6=) 8.Bf7?? (better 8.Be2+-) 8...Kf7–+ 9.Ne5 Be5 10.Be5 Nf6 11.0-0 Re8 12.f4 Nc4 13.Bd4 Bf5 14.Qb3 Be6 15.Qc2 Nd6 16.Na3 (16.Nc3 a6 17.a4 Kg8–+) 16...Nf5 (16...a6 17.Qb2–+) 17.Bf6 Kf6 18.Rac1 Rc8 19.Qb2 Kf7 20.Nc4 Bc4 21.Rc4 Qd3 22.Rfc1 Re7 23.a4 (23.R4c3 Qe2 24.Qb3 Kg7–+) 23...Nh4 (23...Rd7 24.Qc3 Qc3 25.R4c3–+ (25.dc3?? Ne3 26.Rd4 Rd4 27.cd4 Nf5–+)) 24.Qa2 Qd5 (24...Kg7!? 25.Qb2 Kg8-/+) 25.e4=+ Re4?? (25...Qe6 26.Qb3 Kf8=) 26.Rc7+- Rc7 (26...Ke6 27.Qd5 Kd5 28.Rc8 Ra4 29.Rd8 Ke6 30.Re1 Kf6 31.Rd6 Kf7 32.Rd7 Kf6 33.Rh7 Rf4+-) 27.Qd5 Re6 (27...Kf6 28.Rc7 Nf3 29.gf3 Re1 30.Kf2 Re7 31.Qg5 Kg7 32.Qe7 Kh6 33.Qh7) 28.Rc7 Kf6 (28...Kf8 29.Qe6 Nf3 30.gf3 a6 31.Qf7) 29.Qg5 1–0. DEFFM – GuestYMPZ, freechess.org, 2019.

4.c4 dc4 5.Bc4 Bd6 6.Qb3 Qe7+= 7.Nc3 Ngf6 8.Nb5 (8.Nf3 0-0+=) 8...0-0 9.Nd6 cd6 10.Nf3 Nb6 11.0-0 (11.Be2 Be6 12.Qa3 Nc4 13.Bc4 Bc4+=) 11...Nc4 12.Qc4 Bg4 (12...Be6 13.Qh4-/+) 13.Rfc1 (13.Ng5 Rac8 14.Qd3 h6+=) 13...Rac8-/+ 14.Qf1 (14.Qb5 a6 15.Qa5 Bf3 16.gf3 Qe6-/+) 14...Nd5 (14...Qe6 15.d4 e4 16.Nd2-/+) 15.a3 Bf3 16.gf3 Qe6 (16...Nb6 17.Rc8 Rc8 18.Rc1-/+) 17.Rc8+= Rc8 18.Rc1 Qg6 19.Kh1 Rc1 20.Qc1 Qf5 21.Kg2 h5 (21...Qe6 22.d3+=) 22.Qc4 Qg6 23.Kf1 Qb1 24.Ke2 Nb6 25.Qc3 f6 26.Bc1 Kh7 27.Qc7 Kh6 (27...d5 28.d3=) 28.e4= Qa2 29.Ke1 (29.Qd6 Qc2 30.Qb8 Qc1 31.Qh8 Kg6 32.Qe8 Kg5 33.h4 Kh4=; 29.Qb7 Qc2 30.Qb8 h4–+ (30...Qc1?! 31.Qh8 Kg6 32.Qe8 Kg5 33.h4 Kh4 34.Qg6 Qc4 35.Ke1 Qc1 36.Ke2 Qc4 37.Ke1 Qc1 38.Ke2=)) 29...Kh7 30.d3 (30.Qd6?? Qc2–+; 30.Qb7?? Qc2 31.Qf7 Qc1 32.Ke2 Kh6 (32...Qa3?! 33.Qh5 Kg8 34.Qe8 Kh7 35.Qh5 Kg8 36.Qe8 Kh7 37.Qh5=) 33.Qa7 Nc4–+) 30...Qb1 31.Ke2 Na4 32.Qc8 Qa2 33.Bd2 Qf7 34.Qd8 Qe6 35.Qc7 b5 36.Qc2 d5 (36...Qd7 37.Be3=) 37.Qb3+= Nb6 38.Be3 Qc8 (38...Qc6!? 39.Bb6 ab6 40.ed5 Qd6+=) 39.ed5+/- Na4 (39...Qd7 40.Bb6 ab6 41.d4 ed4 42.Qd3 Kg8 43.Qd4+/-) 40.Bc5! (worse is 40.Ba7 Qc1 41.d4 Nc3 42.Kd3 Nb1=) 1–0. Mehlhorn,Uwe (2145) – Milov,Leonid (2430), Apolda Open, 2016.

4.c4 dc4 5.Bc4 Bd6 6.Qb3 Qe7 7.Nf3 Nh6 (7...Ngf6!?=) 8.Nc3+= 0-0 9.Nd5 Qd8 10.0-0 Re8 11.e4 Nb6 12.Nb6 ab6 13.a4 Be6 14.Qc3 (14.Be6 Re6 15.h3 Qe7+=) 14...Bc4= 15.Qc4 Kh8 (15...Qd7 16.a5 b5 17.Qc3=) 16.b5 (16.a5 c6+=) 16...f6 17.d4 ed4 18.Rfe1 Be5 19.Bd4 Bd4 20.Nd4 Ng4 21.h3 (21.Nf5 Ne5 22.Qa2 Qd7+-) 21...Ne5 22.Qc3 Re7 23.Rad1 Rd7 (23...Ra4? 24.Nc6 Nc6 25.Rd8 (25.bc6?! Qe8 26.cb7 c5+-) 25...Nd8 26.e5+-) 24.f4 Nf7?? (better 24...Ng6 25.e5 fe5 (25...Ra4?? 26.Ne6 Qe7 27.Rd7 Qd7 28.ef6 gf6 29.Qf6 Kg8 30.f5+-; 25...Nf4? 26.e6 Re7 27.Qc4+-) 26.fe5 Ra4+-) 25.e5+- fe5 (25...Ra4?? 26.e6 Nd6 27.ed7 Qd7 28.Ne6+-) 26.fe5 Rd5 (26...Ra4?? 27.e6 Nd6 28.Nf5+-) 27.Ne6 Qe7 1–0. GuestRHGZ – GuestBSVD, freechess.org, 2019.

4.c4 dc4 5.Bc4 Bd6 6.Nf3 Ngf6=.

4.c4 dc4 5.Bc4 Ngf6 6.a3 Bd6 7.Nc3 c6 8.Nf3 0-0 9.0-0 e4 10.Ne1 (10.Nd4 Be5+=) 10...Qc7 (10...a5 11.d3 Ne5 12.b5-/+) 11.h3 (11.f4 Nb6 12.Be2 Nbd5+=) 11...Ne5 (11...b5 12.Bb3=) 12.Bb3 a6 (12...Be6 13.Be6 fe6 14.Qb3+=) 13.f4 (13.d4 Ng6=) 13...ef3+= 14.Nf3 Nd3 15.Qc2 Nb2 16.Qb2 Bf5 17.Rac1 (17.Bc2 Be6=) 17...Rfe8 (17...Bd3 18.Rfd1+=) 18.Rfe1 (18.Ng5!? Bg6 19.Bc2+=) 18...Bg3 19.Rf1 Bd3 20.Ng5 (20.Rfd1 Rad8+=) 20...Bf1 (20...Rf8 21.Rfd1-/+) 21.Bf7+= Kh8 22.Be8 Re8?? (better is 22...Bc4 23.Nce4 A) worse is 23...Re8 24.Rc4 Ne4 25.Re4 (worse is 25.Ne4 b5 26.Rd4 Bh2 27.Kh1 Be5+=) 25...Re4 26.Ne4+/-; B) 23...Ne4 24.Ne4 Bd5 25.Ng3 Qg3–+) 23.Rf1+/- h6 24.Rf6 (better is 24.Nf3!?+/-) 24...gf6+= 25.Nce4?? (better is 25.Nf3+=) 25...Be5–+ (25...hg5?! 26.Qf6 Qg7 27.Qg7 Kg7 28.Ng3=) 26.d4 hg5 27.de5 Qe5 28.Qe5 Re5 29.Nf6 Re3 30.Kf2 Ra3 31.Nd7 Rb3 32.Ne5 Kg7 33.Ke2 Rb4 34.Nd3 Rb5 35.g4 Kf6 36.Ke3 Rb3 37.Ke4 Rd3! 38.Kd3 Ke5 39.h4 gh4 40.g5 h3 41.g6 Kf6 42.Ke3 h2 43.Kf3 h1Q 44.Kg3 Qg1 45.Kh3 Qg6 46.Kh4 Kf5 47.Kh3 Kf4 48.Kh2 Kf3 49.Kh1 Qg2# 0–1. wlittle (2245) – tonyh (2385), net–chess.com, 2004.

4.c4 dc4 5.Bc4 Ngf6 6.Qb3 Qe7 7.Nf3 e4 (7...c6!?=) 8.Ng5+= Ne5 9.Be5 Qe5 10.Nf7 (10.Bf7? Kd8–+) 10...Qa1 11.Nh8 c6 12.0-0 (12.Bf7 Kd8+-) 12...Qe5 13.b5 (13.Bf7 Kd8 14.Bc4 Qe7+-) 13...Bd6 (13...Ng4 14.g3 g6 15.bc6 bc6 16.Bb5+=) 14.g3 Nd5 (14...Qe7 15.Nf7+=) 15.Nc3 (15.d4 ed3 16.bc6 bc6 17.Bd3 Bh3 18.Bh7 Kd7+-) 15...Be6 (15...g5 16.bc6 (16.Nd5?! cd5 17.Bd5 Qh8=) 16...bc6 A) 17.Bd5?! cd5 18.f4 gf4+= (18...Qh8?? 19.Qd5 Rb8 20.Qd6+-); B) 17.Nd5 Qh8 18.Qa4+-) 16.bc6+- bc6 17.Qb7 Rb8?? (better 17...Nc7 18.f4 ef3 19.Be6 Qe6 20.Rf3 Kd7+-) 18.Qc6+- Ke7 19.f4 (better 19.Nd5 Bd5 20.Bd5 Rh8 21.Qb7 Kf6 22.Qf7 Kg5 23.Be4+-) 19...Nc3 (19...Qf5 20.Nd5 Bd5 21.Bd5 Rh8+-) 20.fe5 (20.dc3 Qc3 21.Qe4 Qc4 (21...Rh8 22.Qe6 Kd8 23.Qd6 Ke8 24.Qe6 Kd8 25.Rd1 Qd2 26.Rd2 Kc7 27.Rd7 Kb8 28.Qd6 Kc8 29.Qc7) 22.Qh7 Qc3–+ (22...Qa2?! 23.Qg7 Kd8 24.Qf6 Be7 25.Rd1 Bd5 26.Nf7 Ke8 27.Qh8 Kf7 28.Qh5 Kf8 29.Qd5=)) 20...Be5 21.Qe6 Kd8 22.Rf8 (22.Rf8 Kc7 23.Rf7 Kd8 24.Qd7) 1–0. DEFFM – GuestRMSG, freechess.org, 2018.

4.c4 c6 (--> 1.b4 c6 2.c4 d5 3.e3 e5 4.Bb2 Nd7).

4.c4 Ngf6 5.a3 c6 6.Nf3 Bd6 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6).

4.c4 Ngf6 5.Qb3 dc4 6.Bc4 Qe7 7.Nc3 (7.Nf3 c6=) 7...Nb6+= 8.a3 Nc4 9.Qc4 Be6 (9...a5!? 10.Nf3 ab4 11.ab4 A) worse is 11...Qb4 12.Ra8 Qc4 13.Rc8 Ke7 14.Ba3 Ke6 15.Bf8+/- (15.Rf8?! Rf8 16.Bf8 Nd7 17.Ng5 Kf6 18.Nge4 Kg6+=); B) 11...Ra1 12.Ba1 B1) worse is 12...Qb4 13.Qc7 (worse is 13.Ne5 Qc4 14.Nc4 Be6+=) 13...Qc5 14.Qe5 Qe5 15.Ne5+/-; B2) 12...c6=) 10.Qb5= c6 11.Qe5 Qd6 (11...a5 12.b5=) 12.Qd6 Bd6 13.Nge2 0-0 14.0-0 (14.Nd4 Bc8+/-) 14...Rad8 (14...a5 15.b5+=) 15.d4 (15.d3 Rfe8+=) 15...Rfe8 16.Rfe1 Bc4 17.Rac1 Bb3 18.Ng3 Bg3 19.hg3 (worse is 19.fg3 Ng4+=) 19...Ne4 (19...a6 20.f3+=) 20.Ne4+/- Re4 21.Rc5 (21.f3 Re7+/-) 21...a6 (21...Re6 22.f3+/-) 22.f3 Re7 23.Kf2 f6 24.Rh1 Rd5 25.Rc3 Ba4 26.Rc5 (26.Rcc1 Bb5+/-) 26...Bb3 27.Rd5 (27.g4!?+/-) 27...cd5+= 28.Rc1 Bc4 29.e4 b5 30.Ke3 f5 31.e5+/- g5 32.Rh1 Kg7 33.Rc1 Kg6 34.Ra1 Rc7 35.Rc1 Rc6 36.Rc2 Rc8 37.Rf2 Rf8 38.Rc2 Re8 39.g4 fg4 40.fg4 ½–½. Stankovski,Marin – Stavrev,Valeri, BUL–chT Plovdiv, 2003.

4.c4 Ngf6 5.c5 c6 6.Nf3 Qc7 7.d4 e4 8.Ne5 (8.Nfd2 b6+=) 8...Ne5+= 9.de5 Ng4 (9...Nd7 10.Qd4-/+) 10.Qd4+= Be6 11.h3 Nh6 12.g4 (12.Nd2 Nf5 13.Qc3 Be7+=) 12...Be7-/+ 13.Nd2 0-0 14.Be2 f5 15.f3 (15.Rg1 fg4 16.Bg4 Ng4 17.hg4 Bh4–+) 15...ef3 16.Bf3 b6 17.Nb3 fg4 18.Bg4 Ng4 19.hg4 Bg5 20.Ke2 Qc8 21.Rhg1 (21.Ke1 Qa6-/+) 21...Qa6 22.Ke1 Rf3 23.Bc1 Raf8 (23...Raf8 24.Kd1 Be7–+) 0–1. Palikarski,Vasil – Badev,Kiril (2275), BUL–ch qual Velingrad, 2004.

4.c4 Ngf6 5.cd5 Bb4 6.Qb3 a5 7.Bb5 0-0 8.Nf3 (8.a3 Be7-/+) 8...e4 9.Nd4 Nc5 10.Qc2 Qd5 11.0-0 Ne6 12.Bc4 Nd4 13.Bd4 Qg5 14.f4 ef3! 15.Rf3 (15.Rf3 Bd6 Combination) 15...Bd6 (15...Be7 16.Nc3 c5 17.Bf6 Bf6 18.Raf1+=) 16.Bf6 gf6 17.g3 b5 (17...f5 18.Kh1=+) 18.Bd3= b4 (18...Qh5 19.Rf2= (worse 19.Rf6 Be5 20.Qc5 Bg4–+)) 19.Bh7+= Kg7 20.Bf5 Bb7 21.Be4 Be4 22.Qe4 Rae8 23.Qf5 (better 23.Qc4!?=) 23...Rh8 24.Qg5 (24.Qc2 Qh5 25.Rf2–+) 24...fg5–+ 25.a3 g4 (25...Kg6 26.ab4 ab4 27.Rf2–+) 26.Rf5-/+ b3 (26...Re5 27.Re5 Be5 28.d4-/+) 27.Rg5 Kf6 28.Rg4 b2 29.Ra2 Rb8 30.a4 (30.Rc4 Rb3=+) 30...Rb3 31.Rc4 Kf5 32.Kg2 Kg5 (32...Rhb8 33.Kf3=+) 33.Rc2 Rhb8 34.Rc6 R8b6 35.Rb6 Rb6 36.Kf3 c5 37.Ke4 (37.Ra3 Rb4=+) 37...Rb4 (37...f5 38.Kd5 Kg4 39.d3=+) 38.Kd5= Bf8 39.h3 Be7 40.Ra3 Kg6 41.Ra2 f5 42.Ra3 Kg5 43.Ra2 (43.d3 Kg6=) 43...Bf8 (43...c4 44.Ra3=+) 44.Ra3 (44.d3 Rb6=) 44...Kg6 45.Ra2 Kh5 46.Ra3 (46.d3 Kg6=) 46...Kg5 (46...c4 47.e4 fe4 48.Ke4 c3 49.Kd3 cd2 50.Kd2 Rd4 51.Rd3 Ra4 52.Rb3=+) 47.Ra2 (47.d3 Rb6=) 47...Be7 48.Ra3 Kg6 49.Ra2 c4 50.Ra3 Bf6 51.Ra2 Bg5 52.Ra3 Be7 53.Ra2 Kg5 54.Ra3 Bf6 55.Ra2 Kg6 56.Ra3 Kh6 57.Ra2. Mensch – Komodo 8 32_bit, Chess Game, 2018.

4.d3 Bb4-/+ 5.Nd2 c6 6.Be2 Ne7 7.Ngf3 Ng6 8.0-0 0-0 9.c3 Bd6 10.c4 Kh8 11.Rc1 f5 12.cd5 cd5 13.Qb3 Nc5 14.Qd1 Bd7 (14...Qb6 15.d4 Qb2 16.dc5-/+) 15.Ne5=+ Ne5 (< 15...Be5 16.Be5 Ba4 17.Nb3 Bb3 18.ab3 Ne5 19.Rc5+=) 16.Be5 Be5 17.Rc5 Be6 18.d4 Bd6 19.Rb5 f4 (19...Qc7 20.Nf3=) 20.Nf3 (20.Rb7!? fe3 21.fe3+=) 20...b6= 21.ef4 Bf4 22.Ne5 Qf6 23.Bf3 The isolani on d5 becomes a target 23...Be5 24.de5 Qe5 25.Re1 Qf6 26.Qe2 Rae8 27.Qd2 Bd7 (27...Bf7!?-/+) 28.Rd5=+ Re1 (28...Bc6 29.Rd3=+) 29.Qe1 Re8 (29...Bc6 30.Rd3=+) 30.Qd1 (30.Qb1 Bc6 31.Rh5 Qg6 32.Rh7 Kh7 33.Qg6 Kg6–+) 30...Bc6 31.Rd3 Bb5 (31...Ba4 32.Qb1=) 32.Rc3?? (better is 32.Re3=) 32…Qc3–+ (33.h4 Re1 34.Kh2 Rd1 35.Bd1 Qc4–+) 0–1. calu_mishu (1650) – juanpacio (1705), internet, 2006.

4.d3 Bb4!? 5.Nd2 Ngf6 -/+.

4.d3 f6 5.b5 (5.a3 c5=) 5...b6 (5...Ne7 6.c4+=) 6.Nf3 (6.c4 dc4 7.Qh5 g6=) 6...Bb7 (6...a6 7.d4 ab5 8.Bb5=) 7.Be2 (7.d4 Bb4 8.c3 Ba5+=) 7...Ne7 (7...a6 8.ba6 Ba6 9.0-0=) 8.0-0 Nc5 (8...a6 9.a4=) 9.Nbd2 (9.d4 ed4 10.Nd4 a6+/-) 9...Qd7 (9...Na4 10.Rb1+=) 10.d4 (10.a4 Ne6+=) 10...ed4 (better is 10...Na4!? 11.Rb1 e4+=) 11.ed4 (11.Bd4 a6 12.ba6 Na6+=) 11...Ne6 (11...Na4 12.Rb1+=) 12.Nb3 (12.Re1 Nf4+=) 12...0-0-0 (12...Nf4 13.Bc1 Ne2 14.Qe2=) 13.c4 (better is 13.a4!?+=) 13...dc4+= 14.Bc4 Nd5 15.Bd5 (15.Nbd2!?=) 15...Qd5 16.a4 Ng5 17.Nbd2 (better is 17.Ne1!?+=) 17...Bb4–+ 18.h4 Bd2 19.hg5 Bg5 20.Qd3 (20.Bc1 Bc1 21.Rc1 Qf5+=) 20...h5 (20...Bf4 21.Rfe1-/+) 21.Rfe1 (better is 21.Bc1!?+=) 21...h4–+ 22.a5 h3 23.ab6 hg2 (23...hg2 24.ba7 Bd2 25.a8Q Ba8 26.Ra8 Qa8-/+; 23...ab6 24.Re7–+) 0–1. abt – JNic3, Live Game Caissa's Web, 2004.

4.Be5 Ne5 5.Nf3 Nf3 6.Qf3 Bb4 7.c4 dc4 (7...Nf6 8.cd5 0-0 9.a3–+) 8.Bc4 Qd2 (better 8...Nf6–+) 9.Nd2+- Bd2 (9...Nf6 10.0-0-0 0-0 11.Ne4 Ne4 12.Qe4+-) 10.Kd2 Nf6 11.h3 (11.Qf4 0-0 12.Qc7 a6+-) 11...0-0 12.Rhd1 a6 (12...Rb8 13.Rab1+-) 13.Ke1 (better 13.Rab1 Ra7+-) 13...Be6 (13...c6 14.Rd6 Nd7 15.Qe4+-) 14.Be6 fe6 15.Qb7 Nd5 16.Rd5 (16.Qc6!? Rae8+-) 16...ed5 (16...Rab8 17.Qc7 ed5 18.Qd6+-) 17.Qd5 Kh8 18.Rc1 Rfd8 (18...Rab8 19.Qe5 Rb5 20.Qe7+-) 19.Qf7 Rf8 20.Qc7 h6 (20...Rab8 21.Rc2+-) 21.Rc4 (21.Rc6 Kh7+-) 21...Kg8 (21...Rab8 22.e4+-) 22.Rg4 Rf7 23.Qc6 (23.Qc4 Raa7+-) 23...Kh7 (23...Rb8 24.f4 Kh8+-) 24.Qa8 (24.Qa8 Rf5 25.Qe4 Kg8 26.Qf5 g6 27.Rg6 Kh8 28.Qd7 a5 29.Qg7) 1–0. Bendega (1715) – SLLUISGIOSS (1710), lichess.org, 2020.

4.Nf3 Bb4 5.Ne5 Ne5 6.Be5 Nf6 7.Bc3 Bc3 8.Nc3 0-0 9.Be2 c6 10.d4 Ne4 11.Ne4= de4 12.0-0 f5 13.Bc4 Kh8 14.Bb3 Qe7 15.c4 Be6 16.Qc2 Rad8 17.c5 Bb3 18.ab3 a6 19.b4 Qe6 20.Rfc1 Qd5 21.Qc4= f4 22.Qd5 Rd5 23.Rc2 fe3 24.fe3 Rdf5 25.Rcc1 Rf2 26.Rf1 Rf1 27.Rf1 Kg8 28.Rf8 Kf8 29.Kf2 Kf7 30.Kg3?? Ke6 31.Kf4 Kd5 32.g4 h6 33.h4 g6–+ 34.g5 h5 35.Kg3 Kc4 36.Kf4 Kd3 37.Ke5 Ke3 38.Kf6 Kd4 39.Kg6 e3 40.Kh5 e2 41.g6 e1Q 42.Kg5 Qe3 (43.Kf6 Qe5 44.Kf7 Qf5 45.Kg7 Ke5–+) 0–1. tanto (1635) – tomy (1900), net–chess.com, 2001.

4.Nf3 Bb4 5.Ne5 Ne5 6.Be5 Nf6 7.Be2 0-0 8.0-0 c5 (8...Re8 9.d4=) 9.d4 b6 (9...c4 10.a3 Be7 11.Nc3=) 10.a3 (10.c3!? Ba5 11.dc5 bc5 12.Bf6 Qf6 13.Qd5+/-) 10...Ba5= 11.c4 (11.Bb5 Qe7=) 11...Bb7 12.Nd2 (12.dc5 bc5 13.Nd2 Bc7 14.Bc7 Qc7 15.cd5 Bd5=) 12...Bc3 13.Ra2 (13.Rb1 Rc8=) 13...cd4 14.ed4 (worse is 14.Bd4 Bd4 15.ed4 dc4 16.Bc4 Qd4-/+) 14...dc4 15.Nc4 (15.Nb1!? Ba5 16.Bc4=) 15...Qd5-/+ 16.Bf3 (16.f3 Rfd8-/+) 16...Qc4+= 17.Rc2?? (better is 17.Bb7 Qa2 18.Ba8 Ra8 19.Bf6 Qa3 20.Qf3+=) 17...Nd5–+ 18.Qc1 (18.Bd5 Bd5 19.Qc1–+) 18...Rfc8 (better is 18...Rfe8–+) 19.Qg5 f6 20.Bd5?? (20.Bf6 Nf6 21.Bb7+=) 20...Qd5–+ (20...Bd5 21.Bf6 g6 22.Rc3+-) 21.Bf6 Qg5 22.Bg5 Be4 (22...Bd4 23.Rc8 Rc8 24.Rd1–+) 23.Rcc1 (23.Ra2 Bd4 24.Re1 Bc2–+) 23...Bd3 (23...Bd4 24.Rfd1 Bb2 25.Rc8 Rc8 26.Rd7–+) 24.Rfd1 Be2 0–1. SamChess – Wall,Bill, chess.com, 2008.

4.Nf3 Bb4 5.Ne5 Ngf6 6.Nd7 Bd7 7.c4 dc4 8.Bc4 a6 (8...0-0 9.Qf3 Be7 10.0-0=+ (10.Qb7? Rb8 11.Qa7 Rb2–+)) 9.0-0 (9.Qb3 Qe7 10.0-0 Bc6+=) 9...Qe7 (9...0-0 10.Qb3 Bd6 11.a4= (11.Qb7? Rb8 12.Qa6 Rb2–+)) 10.Nc3 (10.Qb3 Bd6 11.Qb7 0-0+=) 10...b5 11.Be2 0-0 12.a3 Ba5 13.Bf3 Rad8 14.a4 b4 15.Nd5 Nd5 16.Bd5 Ba4?? (16...c5 17.Bc4=+) 17.Bf7 (better 17.Qg4 Qe5 18.Be5+-) 17...Rf7= (worse 17...Kf7 18.Ra4 Qg5 19.Qe2+-; 17...Qf7 18.Ra4 Rd5 19.Qa1 Rd2 20.Bg7 Qg7 21.Qg7 Kg7 22.Ra5–+) 18.Qa4 Rf5 19.Qc6 Rd2 20.Bc1 (better 20.Bd4 Qd6 21.Qc1 Rd4 22.ed4 Qd4 23.Qc2=) 20...Rd6–+ 21.Qa8 Rd8 (better 21...Rf8 22.Qa7 Qe5–+) 22.Qa6= Bb6 23.Qc4 Kh8 24.Bd2?? (better 24.Bb2=+) 24...Rd2–+ 25.Ra8 Rf8 26.Rf8 Qf8 27.Ra1 (27.Qc1 Qd6–+) 27...Qd8 (27...Qf2 28.Kh1 Qg2) 28.h3 Rd1 29.Rd1 Qd1 30.Kh2 h6 (better 30...Bc5–+) 31.Qe6?? (31.Qb4 Qd5 32.Kg3–+) 31...Qd6 32.Qd6 cd6 33.Kg3 b3 34.Kf3 b2 35.Ke4 b1Q 36.Kd5 Qc2 37.Ke6 If White now would get Bc5 in, he might survive 37...Qf2 38.Kd6 Qe3 39.Kd5 (39.Kc6 Qc5 40.Kd7 Qd5 41.Ke7 Bc5 42.Ke8 Qe6 43.Kd8 Bb6) 39...Qf2 (39...Qd4 40.Kc6 Qc5 41.Kd7 Qd5 42.Ke7 Bc5 43.Ke8 Qe6 44.Kd8 Bb6) 40.Kc6 (40.Kc4 Qe2 41.Kb4 Qg2 42.h4 Qb2 43.Kc4 Qd4 44.Kb3 Qh4 45.Kc3 Qd4 46.Kb3 Qd3 47.Kb4 g5 48.Ka4 Qc4 49.Ka3 Be3 50.Kb2 Bc1 51.Kb1 Qc3 52.Ka2 Qb2) 40...Be3 (40...Qc5 41.Kd7 Qd5 42.Ke7 Bc5 43.Ke8 Qe6 44.Kd8 Bb6) 41.Kb7 Qg2 (41...Qf6 42.Kc7 Bb6 43.Kd7 Qe5 44.Kc6 Qc5 45.Kd7 Qd5 46.Ke7 Bc5 47.Ke8 Qe6 48.Kd8 Bb6) 42.Kc8 (42.Kc7 Qh3 43.Kd6 g5 44.Kc6 Qf3 45.Kc7 g4 46.Kd7 Qd5 47.Kc7 g3 48.Kc8 Qf7 49.Kb8 Bb6 50.Kc8 Qc7) 42...Qh3 (42...Qc6 43.Kb8 Bb6 44.h4 Qc7 45.Ka8 Qc8) 43.Kc7 (43.Kd8 Qe6 44.Kc7 g5 45.Kb7 Qd7 46.Kb8 g4 47.Ka8 Qc8) 43...g5 (43...Qe6 44.Kb7 Qd7 45.Kb8 g5 46.Ka8 Qc8) 44.Kc6 g4 (44...Qe6 45.Kb5 Qd5 46.Kb4 Bd2 47.Ka3 Qb5 48.Ka2 Bc1 49.Ka1 Qb2) 45.Kb5 (45.Kd5 Qh5 46.Kc4 Qc5 47.Kb3 Qb5 48.Kc3 g3 49.Kc2 g2 50.Kc3 g1Q 51.Kc2 Qc1) 45...g3 (45...Qh5 46.Kc6 Qc5 47.Kd7 g3 48.Ke6 Qc6 49.Kf7 Kh7 50.Ke7 Kg8 51.Kd8 Bg5) 46.Kc4 g2 47.Kd3 g1Q 48.Kc4 Qd1 (48...Ba7 49.Kd5 Qd4 50.Kc6 Qhd7) 49.Kb5 (49.Kb4 Qhg4 50.Ka3 Qga4 51.Kb2 Bd4) 49...Qc8 50.Kb4 (50.Ka5 Qc5 51.Ka6 Qb6) 50...Qb1 (50...Qc5) 51.Ka3 (51.Ka4 Qa6) 51…Qa8 (51...Qa6) 0–1. b4_Bb2 (1770) – Briesies (1730), lichess.org, 2020.

4.f4 ef4 5.ef4 Ngf6 6.a3 +=.

4.f4 f6 5.Nf3 (5.Nc3 c6 6.a3 Bd6+=) 5...Bd6 (5...ef4!? 6.Nd4 Qe7-/+ (6...Bb4? 7.Ne6 Qe7 8.Nc7 Kd8 9.Na8+-)) 6.fe5= Ne5 (6...fe5 7.c4 dc4 8.Na3=) 7.Ne5 Be5 (better is 7...fe5!? 8.Be5 Nf6 9.Bd6 Qd6=) 8.Be5+/- fe5 9.Qh5 Kf8 10.Qe5 c6 11.Nc3 (11.Qg3!?+/-) 11...Qh4+= 12.g3 Qb4 13.Bb5 (better is 13.Bg2 Qe7 14.0-0 Ke8 15.Qd4+/-) 13...cb5?? (better is 13...Qe7 14.Qf4 Nf6=) 14.0-0+- Nf6 15.Rf6! gf6 16.Qf6 Kg8 (16...Ke8 17.Qh8 Qf8 18.Qh7 Qf7 19.Qf7 Kf7 20.Rf1 Kg7 21.Nd5 Bh3+-) 17.Qg5 (17.Rf1 Qe7 18.Qe7 Bf5 19.Rf5 Rf8 20.Rf8) 17...Kf8 18.Rf1 Ke8 19.Qe5 (19.Qe5 Qe7 20.Qh8 Kd7 21.Nd5+-) 1–0. Wall,Bill – Hayes,Dan, Dayton, OH, 1980.

4.a3 (--> 1.b4 e5 2. a3 d5 3.Bb2 Nd7 4.e3).

4.a3 Bd6 5.c4 c6 6.Nf3 Ngf6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6).

4.a3 Bd6 5.Nf3 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3).

4.a3 Ngf6 5.c4 c6 6.cd5 cd5 7.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

4.a3 Ngf6 5.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6).

4.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 Nd7 4.e3).

4.b5 Bd6 5.Nf3 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3).

4.b5 Ngf6 5.c4 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.e3 Nf6 5.c4 Nbd7).

4.b5 Ngf6 5.c4 Bd6 6.Nf3 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4).

4.b5 Ngf6 5.Nf3 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6).

5.a3 Ne7 6.Be2 0-0 7.Nc3 c6 8.0-0 Nb6 9.d3 Ng6 10.b5 Bd7 11.bc6 Bc6 12.h3 Qd7 13.Re1 f5 14.g3 (14.Qd2 Rac8+=) 14...Be7 15.d4 e4 16.Nd2 Rac8 17.Nb3 (17.Kh2 Bd6-/+) 17...Nc4 18.Bc4 dc4 19.Nd2 b5 20.Qe2 a5 (20...a6 21.Red1-/+) 21.Rec1 (21.Red1 Qe6-/+) 21...b4 (21...Rf7!?–+) 22.Qc4-/+ Kh8 23.Nd1 Ba4 24.Qa2 Rc2 25.ab4 Rc1 26.Rc1 ab4 27.Nb3 Rd8 28.Ra1 Bc6 29.Nc5 Bc5 30.dc5 f4 31.Bd4 (31.ef4 Qd1 32.Rd1 Rd1 33.Kg2 e3 34.f3 Rd2 35.Kg1 Bf3 36.Bg7 Kg7 37.Qa1 Kf7 38.Qf1–+) 31...fe3–+ 32.fe3 Qh3 33.Qh2 Qf5 34.Qb2 Qg5 35.Bg7 Kg8 36.Bd4 (36.Kf2 Qc5 37.Bd4 Rf8 38.Ke1 Qc4-/+) 36...Nh4 (better is 36...Qg3 37.Qg2 Qg2 38.Kg2 Nh4 39.Kh3 Nf3–+) 37.Kf2 Rf8 38.Ke2 Nf3 39.Nf2 (39.Qb3 Bd5 40.Qb4 A) 40...Nd4 41.Qd4 (41.ed4 Qg3 42.Kd2 Bb3+=) 41...Qh5 42.Kd2+=; B) 40...Qg3–+) 39...Qg3 (39...Nd4?! 40.Qd4 Bb5 41.Ke1 Qg3 42.Qd5 Rf7 43.Ra8 Kg7 44.Qd4 Kh6 45.Qd6 Qd6 46.cd6-/+) 40.Rf1 (40.Qb3 Rf7 41.Ra8 Ba8 42.Bf6–+) 40...Bb5 41.Kd1 Bf1 42.Qa2 b3 43.Qb3 Rf7 44.Qd5 Be2 (better is 44...Bc4 45.Qc4 Qg1 46.Kc2 Qf2 47.Kc3 Qd2 48.Kb3 Nd4 49.ed4 Kg7–+) 45.Kc1 (45.Ke2 Nd4 46.ed4 Qf2 47.Kd1 h6–+) 45...Nd4 (45...Qg1 46.Kb2 Qf2 47.Qd8 Rf8 48.Qd5 Rf7 49.Qd8 Rf8 50.Qd5 Rf7=) 46.Qd8 Rf8 47.Qd5 Ne6 48.Qe6 Kh8 49.Qe4 Rd8 (better is 49...Rf2 50.Qd4 Kg8 51.Kb2–+) 50.c6 (50.Qf4 Qg7 51.Kc2–+) 50...Qg1 (50...Qg1 51.Kb2 Rb8 52.Kc2 Qb1 (52...Qf2?! 53.Qe5 Kg8 54.Qb8 Kg7 55.Qe5 Qf6 56.Qd4-/+) 53.Kd2 Qb2 54.Ke1 Rd8 55.Qe5 Qe5–+; 50...Qf2?! 51.Qe5 Kg8 52.Qg5 Kf7 53.Qd8 Qe3 54.Kb2 Qe5 55.Kc2–+) 0–1. Hohlstein,Walter (1955) – Scholz,Sascha (2040), RSX9E–A00–Sokolsky–2, 2004.

5.a3 f5 6.c4 c6 7.cd5 cd5 8.Bb5 Qe7+= 9.0-0 Ngf6 10.d4 (better 10.Nc3+=) 10...0-0?? (10...e4 11.Nfd2=+) 11.de5?? (better 11.Bd7 Nd7 12.de5+-) 11...Ne5= (worse 11...Be5 12.Nc3 Bc3 13.Bc3+-) 12.Nbd2 Bd7 13.Bd7 Nfd7 14.Qb3 Qf7? (14...Nf6!?=) 15.Rac1 (better 15.Ng5 Qe7 16.Qd5 Kh8 17.f4+-) 15...Rac8? (better 15...h6+=) 16.Ng5+- Qh5 (16...Qe7 17.Qd5 Kh8 18.Rc8 Rc8 19.Qb7+-) 17.Qd5 Kh8?? (17...Nf7 18.h4 Rc1 19.Rc1 Be5 20.Be5 Nde5 21.Nf7 Nf7+-) 18.Rc8 (better 18.Qd6 Qg5 19.f4+-) 18...Ng4 (18...Rc8 19.Qd6 Qg5+-) 19.Rf8 (19.Nf7 Qf7 20.Qf7 Nge5 21.Be5 Nf6 22.Rf8 Bf8 23.Qf8 Ng8 24.Qg7) 19...Bf8 20.Nf7 Kg8 21.Nh6 Kh8 22.Qg8 1–0. GuestDZRZ – guzter, freechess.org, 2017.

5.a3 Ngf6 6.c4 c6 7.cd5 cd5 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.c4 c6 7.cd5 cd5).

5.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3).

5.Bb5 c6 6.Be2 Ngf6 7.0-0 0-0 8.c4 e4 9.Nd4 Bb4 (9...dc4 10.Qc2–+) 10.cd5-/+ cd5 11.Qb3 (11.Nc3 Ne5-/+) 11...Be7 (11...Bd6 12.Nc3-/+) 12.a4 Nc5 13.Qc2 Bd7 14.Nc3 Rc8 15.Ba3 h6 16.Qd1 b6 17.d3 Nd3 18.Bd3 Rc3–+ 19.Be7 Qe7 20.Bb5 Rfc8 21.Ba6 R8c7 22.Nb5 Bb5 23.Bb5 Qc5 24.h3 Nd7 25.Qh5 Nb8 26.Qe5 Rc8 27.Rfd1 a6 28.Rd5=+ Rc1 29.Rc1= Qc1 30.Kh2?? ab5–+ 31.Rb5 Qc7 32.f4? Qe5 33.Re5 f6 34.Re4 Kf7 35.Rb4 Nd7 36.g4 Rc5 37.e4 Ke6 38.Kg2 Kd6 39.h4 Kc6 40.g5 hg5 41.hg5 fg5 42.f5 Kd6 43.Kf2 Ke5 44.Kf3 Rc3 45.Kg4 Kf6 46.e5 Ne5 47.Kh5 Rh3 48.Rh4 Rh4# 0–1. TIROLOCO – tam, Live Game Caissa's Web, 2004.

5.c4 dc4 6.Bc4 Ngf6 += (worse is 6...Bb4 7.Bf7 Kf7 8.Qb3 Ke8 9.Qb4+/-).

5.c4 e4?? 6.Bg7+- ef3 7.Bh8 Bb4 (7...fg2 8.Bg2 dc4 9.Qg4+-) 8.cd5 (better 8.Qf3 Ndf6+-) 8...a5? (8...fg2 9.Bg2 Ngf6+-) 9.Qf3 Ndf6 10.Bc4 Bg4 11.Qf4 c6 (11...Bd6 12.Qd4+-) 12.dc6 Bd6 13.Qg5 Qe7 (13...bc6 14.Nc3 h6+-) 14.cb7 Rd8 (14...Rb8 15.Bb5 Kd8 16.Ba6+-) 15.Bb5 Rd7 (15...Bd7 16.Nc3+-) 16.Bd7 Bd7 17.Na3! Ba3 (17...Bb8+-) 18.b8Q Qd8 19.Qd8 (19.Qd8 Kd8 20.Bf6 Nf6 21.Qf6 Be7 22.Qh8 Be8 23.Qd4 Bd7 24.Rb1+-) 1–0. GuestXCPK – ALEKSAHDER, freechess.org, 2018.

5.c4 Qf6 6.c5 (6.cd5 Ne7= (worse 6...Bb4 7.Ne5 Bd6 8.Nc4+-)) 6...Be7 7.Be2 c6 (7...Qf5 8.Nc3 c6 9.d4=) 8.0-0 Nh6 9.Qc2 (9.Qb3 Qf5=) 9...0-0 10.a4 a6 (10...b6 11.Bd3=) 11.d3 (11.a5 Qe6=) 11...Re8 (11...Qe6 12.a5=) 12.a5 (12.Ne5 Ne5 13.f4 Nf5 14.Be5 Qe6=) 12...Bf8 (12...Nf5 13.Nbd2=) 13.e4 (13.Nbd2 Qg6+=) 13...d4 14.Nbd2 (14.Ne1 g5+=) 14...Qg6 (14...Rb8 15.Nc4=) 15.Nc4 f6 (15...Ng4 16.Nfd2+-) 16.Nh4+- Qf7 17.f4 Qe6 18.Bh5 g6 (better 18...Rd8!?+-) 19.f5+- gf5 20.Nf5 Nf5 21.ef5 Qe7 22.Nd6 (22.Be8?! Qe8 23.Rae1 Qh5+-) 22...Rd8 (22...Bh6 23.Be8 Be3 24.Kh1+-) 23.Qb3 Kg7 24.Rf3 h6 (24...Kh8+-) 25.Rg3 Kh7 1–0. GuestVMZB – GuestLLSZ, freechess.org, 2018.

5.c4 Ngf6 6.c5 e4 7.cd6 ef3 8.dc7 Qc7 9.Qf3 0-0 10.Nc3 d4 (better 10...Qe5!?+-) 11.Nb5+- (11.ed4?! Re8 12.Be2 Nb6+=) 11...Qc2 12.Bd4 a6 13.Nd6 Rb8 (13...a5 14.b5 Qc7 15.Nc4+-) 14.Be2 (14.Bc4 b6+-) 14...Qc7 (14...b5 15.Qg3+-) 15.Qg3 Qd8 (15...b5 16.Bf3+-) 16.0-0 Qe7 (16...b6+-) 17.Nf5 (17.Nf5 Nh5 18.Ne7 Kh8 19.Bh5+-) 1–0. DEFFM – PERECVET, freechess.org, 2018.

5.c4 Ngf6 6.c5+= e4 7.cd6+/- ef3 8.dc7 Qc7 9.Qf3 0-0 10.Qd1 Ne5 11.Na3 Be6 (11...Qe7 12.Rc1+/-) 12.Nc2 (12.Qc2 Qc2 13.Nc2 Nfd7+/-) 12...Rac8 13.Rc1 Qd6 14.Be2 Rfd8 15.0-0 d4 16.Bd4 Ba2 17.Ra1 (better is 17.Ba7!? b6 18.Nd4+/-) 17...Bb3= 18.Rc1 b6 (18...Nc6!? 19.Bc3 Nd5=) 19.Be5+/- Qe5 20.d4 Qe8 21.Bd3 g6 (21...a5 22.ba5 ba5 23.Qf3+/-) 22.Qf3 Kg7 23.Na3 Qa4 24.Nb5 Rc1 25.Rc1 Qb4 26.Na7 Qa3 27.Rc7 Rd7 28.Qc6 (28.Rc6 Be6 29.Qd1 Qa7–+) 28...Ba4 29.Qc4 Rc7 30.Qc7 Qd3 (30...Qd3 31.h3 Qd2–+) 0–1. algernon (2115) – kinderchocolate (2235), net–chess.com, 2013.

5.c4 Ngf6 6.c5+= Be7!? 7.Be5 Ne5 8.Ne5 0-0+=.

5.Bd3 =+.

5.d4 ed4 6.Bd4 (6.Qd4 Ngf6=) 6...Ngf6 (6...Bb4 7.c3 Bf8 8.c4+=) 7.Bd3 (7.b5!?=) 7...Bb4-/+ 8.Nbd2 (8.c3 Bd6-/+) 8...0-0 (8...c5 9.c3 Ba3 10.Bf6 Qf6 11.Qb3+=) 9.0-0 (9.a3 Bd6-/+) 9...c5 10.Bb2 h6 (10...c4 11.c3 Bd6-/+ (11...cd3?! 12.cb4 Nb6 13.Bd4=)) 11.c4 (11.c3 Ba5+=) 11...dc4-/+ 12.Nc4 (better is 12.Bc4 Nb6 13.Qc2+=) 12...Kh8 (better is 12...b5 13.Nd6 c4-/+) 13.Re1?? (13.a3!? Ba5 14.Na5 Qa5 15.Qc2=) 13...Qc7 (13...Be1 14.Qe1 b5 15.Nd6–+) 14.h3? (better is 14.Ncd2+=) 14...Be1–+ 15.Qe1 b6 (15...b5 16.Nce5 Ne5 17.Be5–+) 16.Nfe5 (16.Rd1 b5 17.Nce5 Qb6–+) 16...Ne5 (16...b5 17.Nd7 Bd7 18.Ne5–+) 17.Ne5 (17.Be5 Qe7–+) 17...Bb7 (17...Be6 18.a3–+) 18.Nc4 (18.Rd1 Rfe8 19.Qc3 Nd5–+) 18...Qc6 (18...b5 19.Na5 c4 20.Be2–+) 19.f3 g5?? (better is 19...Qe6–+) 20.Ne5 Qd6 21.Ng4?? (better is 21.Qc3 Bc8 22.Nc4+/-) 21...Qd3–+ 22.Nf6 Qc2 23.Qc3 (23.Be5 Rfd8–+) 23...Qc3 24.Bc3 Rfd8 25.Nd7 (25.e4 Rd3 26.Rc1 Rad8–+) 25...Kg8 26.Nf6 Kf8 27.Nh7 (27.e4 Rd3 28.Nh7 Kg8 29.Nf6 Kg7–+) 27...Ke7 28.Bf6 (28.e4 Rd6–+) 28...Ke6 29.Bd8 Rd8 30.Re1 Rh8 0–1. gtate (1860) – bar (1930), net–chess.com, 2003.

5.d4 e4!? 6.Nfd2 Bb4 -/+.

5.Be2 Ne7 6.b5 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ne7 6.Be2).

5.Be2 Ngf6 6.0-0 0-0 7.d3 Re8 8.b5 c5 9.c4 d4 (9...dc4 10.dc4 Qc7 11.Nfd2=+) 10.ed4 (10.Na3 Qe7=+) 10...ed4 11.Nbd2 b6 12.a4 Bb7 13.Re1 Qc7 (13...a6 14.Qb3-/+) 14.g3 (14.a5 ba5 15.Qa4 a6-/+) 14...Ne5 (14...a6 15.Qb3-/+) 15.Ne5 Re5 16.Nf3 Re7 17.Qd2 White intends a5 (17.Bc1 a5-/+) 17...Qd7 (17...Rae8 18.Nh4-/+) 18.Nh4=+ Rae8 19.Bf1 (19.Bf3 Re1 20.Re1 Bf3 21.Re8 Qe8 22.Nf3 a5=+) 19...h6 (19...Re1 20.Re1 Re1 21.Qe1=+) 20.Re7=+ Re7 21.a5 g5 (21...Qg4 22.h3 Qe6 23.Bg2=+) 22.Ng2 (22.a6 Ba8 (worse 22...gh4 23.ab7 hg3 24.hg3+-) 23.Bg2 Bg2 24.Ng2 Qh3=+) 22...Qe8 (22...Qh3 23.Ne1 Qh5 24.f3-/+) 23.a6 (23.Re1 Be5=) 23...Bc8 (23...Ba8 24.Re1=) 24.Re1 Bf5 25.Bc1 Ng4 26.Re7 Qe7 27.f3 (27.Be2 Qe6=) 27...Ne5 28.Ne1 (28.Qd1 Ng6=+) 28...f6 (28...Qe6 29.Qe2=) 29.g4 (29.f4 Nd7=) 29...Bd7 30.h4 (30.Qe2 f5 31.gf5 Bf5=+) 30...Ng6-/+ (worse 30...gh4 31.Qh6 h3 32.Bh3 Nc4 33.Qg6 Kh8 34.Qh5 Kg7 35.Bh6 Kg8 36.Qg6 Kh8 37.dc4 Qe1 38.Bf1 Qg3 39.Bg2 Qe1 40.Bf1 Qg3 41.Bg2 Qe1 42.Bf1=) 31.h5 (31.hg5 Bf4 32.Qd1 Bc1 33.Qc1 fg5=+) 31...Bf4 32.Qd1 Bc1 33.Qc1 Nf4 (33...Nh4 34.Kh1 f5-/+) 34.Qd2? (34.Ng2 Ng2 35.Kg2 f5=+) 34...Qe5 (34...f5!? 35.gf5 Bf5 36.Ng2 Nh3 37.Kh2 Qc7 38.Kh1–+) 35.Ng2-/+ Ng2 (35...Nh3!? 36.Kh1 f5 37.gf5 Bf5-/+) 36.Qg2=+ Kf7 (36...f5 37.gf5 Kf7 38.Qh2-/+) 37.Be2 (37.Qh2 Qf4=+) 37...Qe3 (37...f5 38.Qh2 Qe3 39.Kf1=+) 38.Qf2 Qe5 39.Kg2 (39.Qg2!?=) 39...Ke6 (39...f5 40.Bf1=+) 40.Bf1 f5 41.gf5 Kf5 42.Qg3 Qg3 43.Kg3 Ke5 (43...Be8 44.Bh3 Ke5–+) 44.Be2= Be8 45.Kg4 Bf7 46.Bf1 Be6 47.Kg3 Bf5 48.Be2 Be6 49.Bf1 Bf7 50.Kg4 Be8 51.Bg2 (51.Be2!?=) 51...Bd7=+ 52.Kg3 Bf5 53.Bf1 ½–½. Starr,Albert Martin – Standen,Julian (1640), San Francisco Chernev Memorial, 2008.

6.b5 Ngf6 7.a4 0-0 8.Be2 c5 9.cd5 Nd5 (9...e4 10.Ng1=+) 10.d3= b6 11.0-0 Bb7 (11...a6 12.Qb3 Nb4 13.Nbd2=) 12.Nc3 Kh8 13.Nd2 Qg5 (13...a6 14.Bf3 Nc3 15.Bc3=) 14.Nc4?? (14.Nce4 Qg6 A) 15.Nd6?? Ne3 (worse 15...Qd6 16.Nc4 Qc7 17.a5+=) 16.Bg4 Nd1 17.Rad1 Qd6-+; B) 15.a5+=) 14…Nc3-+ (14...Nc3 15.Bf3 Nd1 16.Bb7 Nb2 17.Nb2 Rad8-+) 0-1. sezwho (2035) - jlindner (2040), Rated Bullet game, lichess.org, 2014.

6.c5 Bc7 7.Be2 a6 8.0-0 Ne7 9.d3 (9.Nc3 0-0+=) 9...Ng6 10.Nbd2 0-0 11.Qb3 (11.Qc2 Nf6=) 11...Kh8 (11...Qe7 12.Qc3=) 12.e4 (12.Qc2 Nf6=) 12...d4 (12...Nf6 13.Rfe1=) 13.g3 Qe7 14.Nc4 Nf6 15.Rfe1 Bg4 16.a4 Bf3 (16...h6!?=) 17.Bf3+- Rab8 18.Ba3 Qd7 19.Rab1 Qh3 20.Bg2 Qe6 21.b5 h5 22.Qc2 h4 23.b6 Bd8 24.Nd6 Be7 25.Nf5 hg3 (25...a5 26.Qb3+- (worse 26.gh4 Nh5=+)) 26.fg3 Kg8? (better 26...Bd8+-) 27.Bh3+- Qc8?? (27...Kh8 28.Qg2 Qd7+-) 28.Ne7 Ne7 29.Bc8 Rbc8 30.Qd2 Nh7 (30...Ng6 31.h4 Rfe8 32.Rf1+-) 31.Rf1 Ng6 (31...Rce8 32.Bc1+-) 32.Rf5 (32.h4 Rfe8+-) 32...Rce8 33.Qe2 f6 (33...Re6 34.h4+-) 34.Rh5 Nh8 35.Qg4 g6 (35...Rf7 36.Qh3 g6 37.Rh4+-) 36.Rh7! Kh7 37.Qd7 Kg8 38.Qb7 f5 39.Qc6 f4 40.Qd5 Kg7 41.c6 fg3 42.Bf8 (42.Bf8 Rf8 43.b7 gh2 44.Kh2 Rf2 45.Kg1 Rf8 46.c7 Re8 47.b8Q Re6 48.Qe6 Kh7 49.c8Q Nf7 50.Qf8 Nd6 51.Qh8) 1–0. GuestWPTY – GuestNVVK, freechess.org, 2019.

6.c5 Bc7 7.Be2 Ngf6 8.0-0 0-0 9.Qc2 h6 10.d3 Re8 11.Nbd2 a5 12.a3 ab4 (12...Qe7 13.Rfb1=) 13.ab4+= Ra1 14.Ra1 Nf8 (14...Bb8 15.Ra8+=) 15.Ra8 Qd7 (15...Ng6 16.Nb3+=) 16.h3 (better 16.b5 cb5 17.Qb3+=) 16...b6? (better 16...Ng6+=) 17.cb6+- Bb6? (better 17...Bd6 18.Ra7 Qe6+-) 18.Ne5 (18.Be5?! Re6+-) 18...Re5 (18...Qd6 19.Nc6 Bd7 20.Re8 Be8 21.b5+-) 19.Be5 Bb7 20.Ra1 N6h7 (20...Qe7 21.Nf3+-) 21.d4 Ng6 22.Bd3 Ne5 (22...Nhf8 23.Bg3 Qe7+-) 23.Bh7 Kh8 24.de5 g6 25.Bg6! fg6 26.Qg6 Qg7 27.Qe6 Kh7 (27...Bc7 28.b5! cb5 29.Ra7+-) 28.b5! (28.b5 Qc7 29.bc6 Qc6 30.Qc6 Bc6 31.Ra6 Be3 32.fe3+-) 1–0. GuestPDKZ – GuestNXDS, freechess.org, 2017.

6.c5 Bc7 7.Be2 Ngf6 8.d4 e4 9.Nfd2 0-0 (9...Nf8 10.Nc3=) 10.0-0 Re8 11.Nc3 Nf8 12.b5 Be6 13.Qa4 Qd7 14.Rfe1 Bg4 15.Bg4 Ng4 16.Nf1 Ng6 17.h3 Nf6 18.Rab1 Nh4 19.bc6 (19.Ng3 h5 20.bc6 bc6=+) 19...bc6 20.Re2 (better 20.Ne2!?=+) 20...Nf3 21.Kh1 Ng5 (21...Nh5 22.Qd1-/+ (22.gf3?? Qh3 23.Kg1 ef3 24.Nd5 Qg2)) 22.Kg1 Nf3 23.Kh1 Ng5 24.Ba3?? (better 24.Kg1=) 24...Nh3–+ 25.Rb7 (25.Reb2 Ng5 26.Ne2 Qg4 27.Qc6 Rac8–+) 25...Ng5 26.Reb2 Ng4?? (better 26...h5 27.Ne2 h4–+) 27.Nd5= Qd5 28.Rc7 Ne6 (better 28...Rec8!? 29.Rc8 Rc8=) 29.Rc6+- Qh5 (29...Reb8 30.Kg1 h5 31.Rd6+-) 30.Kg1 Ng5? (better 30...Reb8+-) 31.Ra6?? (31.Rc7 Nf3 32.gf3 ef3 33.Qd7=) 31...Nf3–+ 32.gf3 ef3 33.Qc6 (33.Ra7?? Qh3 34.Qe8 Re8 35.Rf7 Qg2) 33...Nf6 (better 33...Qh3 34.Qf3 Qf3–+) 34.Ng3 (better 34.Qc7 Ne4 35.Qh2+-) 34...Qg4+= 35.Kf1 Qh3 (35...h5 36.Ke1 h4 37.Nf1=) 36.Ke1 Qg4 (36...Re3 37.Kd1 (37.fe3?! Qg3 38.Kd1 Re8 39.Ra7 f2 40.Rf2 Qf2+=) 37...Rae8 38.Ra7 (38.fe3?! Qg3 39.Ra7 f2 40.Rf2 Qf2=) 38...Re1 39.Kc2+-) 37.Kd1 (better 37.Qb7+-) 37...Ne4?? (better 37...h5 38.Qb7 h4+-) 38.Ne4 Qg1 (38...Rac8 39.Qb7 Re4+-) 39.Kc2 Qe1 (39...Rac8 40.Qb7 Ra8 41.Rb1+-) 40.Ra7 Qe2 41.Kc3 Qe1 42.Nd2 Rac8 43.Qf3 f6 44.Rb1 (44.Qg4 Re3 45.fe3 Qc1 46.Kd3 Qf1 47.Nf1 Rc7 48.Rb8 Kf7 49.Rc7) 44...Qb1 45.Nb1 h6 46.Qb7 (46.Qb7 Rc5 47.Bc5 Re3 48.fe3 f5 49.Qg7) 1–0. DEFFM – icarenot, freechess.org, 2019.

6.cd5 cd5 7.Qb3 Ngf6 8.Nc3 Nb6 9.Nb5 Bb8 (9...e4!? 10.Nd6 Qd6=) 10.Ne5 (10.Be5 Be5 11.Ne5 a6+/-) 10...0-0 11.d4 Re8 12.Be2 Nc4? (better 12...a6!? 13.Na3 Ne4+=) 13.Nc4+- dc4 14.Bc4 Qe7 15.0-0 (15.Rc1 a6 16.Nc3 Bd6+-) 15...Bf5 (15...a6 16.Nc3+/-) 16.Nc3 a6 17.Nd5 Nd5 18.Bd5 Qh4? (18...Bd6+-) 19.g3 (19.Bf7 Kh8 20.g3 Qh3+-) 19...Qh5 (19...Qe7 20.e4! Bh3 21.Rfd1+-) 20.Bg2 (better 20.Bb7!? Ra7 21.Qa4 Kf8+-) 20...Bd6 21.b5 (21.Bb7 Rab8 22.Qd5 Qg6 23.Ba6 Be4+-) 21...Bh3 22.ba6 Bg2 (22...ba6 23.Qd1 Bg4 24.Qa4+-) 23.Kg2 (23.ab7!? Bd5 24.ba8R Ra8-/+) 23...ba6+/- 24.Ba3 Bc7 (24...Rab8 25.Qd3 (25.Bd6? Rb3 26.ab3 Qd5 27.Kg1 Qd6-+) 25...Ba3 26.Qa3+-) 25.Bc5 (25.Rfc1 Rab8 26.Qd3+- (26.Rc7?! Rb3 27.ab3 Qd5 28.Kg1 Qb3+=)) 25...Re6?? (25...Rab8 26.Qd1 Qg6 27.Qf3+-) 26.Qd1 (better 26.Qb7 Rae8 27.Qc7 Qd5 28.Kg1+-) 26...Qd5 27.Qf3 Qd7?? (better 27...Re4+-) 28.Qa8 (28.Qa8 Re8 29.Qa6+-) 1-0. carlos78 (2270) - digiska (2035), Rated Blitz game, lichess.org, 2015.

6.cd5 cd5 7.Bb5 Qe7 8.0-0 Ngf6 (worse 8...Bb4 9.Ne5 Ngf6 10.Nd7 Nd7 11.Bg7+-) 9.d4 (9.a3 a5=+) 9...e4-/+ 10.Nh4 (10.Ne5 0-0-/+ (worse 10...Be5 11.de5 Qb4 12.Qb3 Qb3 13.ab3+-; 10...Bb4?! 11.Qb3=+)) 10...g6 (10...Qe6!? 11.f4 a6-/+) 11.a3=+ 0-0 12.g3 a6 13.Be2 Nb6 14.Ng2 Bh3 15.Qb3 Rac8 16.Nd2 Rc7 (16...Qe6 17.Rac1=+) 17.Rfc1 Rfc8 18.Nf4 Bf4 (18...Bd7 19.Rc7 Rc7 20.Rc1=+) 19.ef4= Bd7 20.Rc5 Ba4 (worse 20...Rc5 21.bc5 Na4 22.Qb7+=) 21.Qe3 Nbd7 (21...Bb5 22.Bd1=+) 22.Rc7= Rc7 23.f3 Rc2 (23...Nb6 24.Re1=) 24.Bc3+= Nb6 25.Bd1 Rd2 26.Qd2 Nc4 27.Qe2 Bd1 28.Qd1 b5 (28...ef3 29.Qf3 Qe4 30.Qe4 Ne4 31.Be1+-) 29.fe4 (29.a4 Kg7+-) 29...Ne4 (29...Qe4!? 30.Qe1 Qf3=) 30.Qd3+- Qe6 31.a4 Qg4 (31...ba4!? 32.Ra2 a3=) 32.ab5+- ab5 33.Ra7 (33.Ra8 Kg7 34.Re8 Qd7 35.Re4 de4 36.Qe4 Kf8+-) 33...h5 (better 33...Nc3!? 34.Qc3 Qd1 35.Kf2 Nd2 36.Ra8 Kg7=) 34.Re7+- f5 (34...h4 35.Be1+-) 35.Rd7 h4 36.Be1 (36.Rd5 hg3 37.Rd8 Kf7 38.hg3 Ng3–+) 36...hg3 37.hg3 1–0. DEFFM – GuestFXPY, freechess.org, 2017.

6.cd5 cd5 7.Bb5 Qe7 8.0-0 Ngf6 9.Nh4 Bb4 (better 9...Qe6!?=+) 10.Nf5+= White gets the initiative 10...Qf8 (10...Qc5!? 11.Bd7 Nd7+= (worse 11...Kd7 12.a3 Ba5 13.Be5+-)) 11.Be5+- a6 12.Qa4 Qc5? (better 12...Kd8 13.Bd4 Rb8+-) 13.Nd6+- Ke7 (13...Qd6 14.Bd6 Bd6 15.Nc3+-) 14.d4 (14.Nc8?! Rhc8 15.Bd7 Nd7 16.Bg7 b5+-) 14...Qa7 (14...ab5 15.Qa8 Qc6 16.Nf5 Kd8 17.Bf6 Qf6+-) 15.Qb4 (15.Qb4 Nc5 16.Be2+-) 1–0. onur604 (2320) – Razaq (2075), lichess.org, 2020.

6.cd5 cd5 7.Bb5 f6 8.0-0 Ne7 9.d4 (9.Qb3 a6 10.Be2 Qb6=) 9...e4+= 10.Nfd2 0-0 (10...Bb4!? 11.Nc3 a6+=) 11.Nc3 b6 (better is 11...f5!?=) 12.Qb3+/- a6 (12...Kh8 13.Nd5 Bb7 14.Nc3+/-) 13.Bd7 (better is 13.Bc6! Bh2 14.Kh1+-) 13...Qd7+= 14.Nde4 Bc7 15.a4 Kh8 16.Ng3 Bg3 17.fg3 (17.hg3 Re8+/-) 17...Bb7 18.a5 b5 19.Rf4 Rac8 20.g4 (20.Rc1 Qe6 21.Nb1 Nf5=) 20...Rc4 21.Raf1 (21.g5 Ng6 22.Rf3 fg5 23.Rf8 Nf8=) 21...Rfc8 22.g5 fg5 23.Rf8 Rf8 24.Rf8 Ng8 25.Ne2 (25.Na2 Qd6 26.Rf5 Qg6=) 25...Qe7+= 26.Rf5 (26.Rb8 Bc8-/+ (26...Rb4? 27.Qa3+-; worse is 26...Qb4 27.Qb4 Rb4 28.Ba3 Rb1 29.Kf2+=)) 26...Nh6 (26...Qb4 27.Qb4 Rb4 28.Bc1-/+) 27.Re5 Qf8 (27...Rb4? 28.Re7 Rb3 29.Bc1+-; 27...Qb4?! 28.Qb4 Rb4 29.Re8 Ng8 30.Bc1-/+) 28.Rg5 Rb4 29.Qc3 Rc4+= 30.Qb3 Nf5 31.Nf4+= Qf6 32.Nh3? Qe6 33.Kf2? Qe4–+ 34.Nf4 Rc2 35.Ne2 Rb2! 36.Qb2 Qe3 (36...Qe3 37.Ke1 Qg5–+) 0–1. gtate (1780) – tomy (1755), net–chess.com, 2002. (=1.e3 e5 2.b4 d5 3.Bb2 Bd6 4.Nf3 Nd7)

5.Nd4 Bb4 6.Nc6! bc6 7.Bg7 Ngf6 8.Bh8 Ke7 (8...Kf8 9.c3 Bd6 10.d3+-) 9.Bf6+- Nf6 10.Be2 d4 (10...Qg8 11.g3+-) 11.c3 (11.ed4 Qd4 12.c3+-) 11...d3 (better 11...dc3 12.Nc3 Bc3 13.dc3 Qd1 14.Kd1 Be6+-) 12.cb4 de2 13.Qe2 Bg4 (13...Qd6 14.f3+-) 14.Qc4 (14.f3 Bh5+-) 14...Be6 (14...Qd5 15.Qc2+-) 15.Qc5 (15.Qc6 Rb8+-) 15...Kd7 (15...Qd6 16.Qa5+-) 16.0-0 Qg8 (16...Qe7 17.Qd4 Ke8 18.f3+-) 17.Qd4 (17.Rc1 Bd5+-) 17...Ke7 18.Qc5 (18.f3 Qd8 19.Qb2 Qd3+-) 18...Kd7 19.Rc1 Bd5 20.Nc3 Qc8 (20...Qg6 21.Nd5 Nd5 22.b5+-) 21.Nd5 (21.Qd4 Ke7+-) 21...cd5 22.Qd4 (22.Qc6 Ke7+-) 22...Ke7 (22...Qa6 23.Rc5 Qb6 24.Rac1+-) 23.Rc6 Ne8 (23...Qf5 24.Rc7 Kf8 25.f3 ef3 26.Rf1+-) 24.Qc5 Nd6 (24...Kd8 25.Qd5 Qd7 26.Qe4 Rb8+-) 25.Rc7 Qc7 26.Qc7 Ke6 27.Rc1 (27.d3 ed3 28.f4 Re8 29.Qa7 d2+-) 27...Rc8 28.Qc8 Nc8 29.Rc8 Kd7 (29...d4 30.ed4 h6 31.Rc6 Kd5 32.Rh6+-) 30.Ra8 h5 0–1. GuestGTKQ – GuestCWCY, freechess.org, 2018.

5.Nd4 Bb4 6.Nf5 Bf8?? (better 6...Ngf6 7.Ng7 Kf8=) 7.Ng7+- (7.Bg7?! Bg7 8.Ng7 Kf8=) 7…Ke7 1–0. GuestBGNT – foosballfan, freechess.org, 2018.

5.Ne5 Bb4 6.Nd7 f6 7.Qh5 g6 8.Qd5 Qd7 9.Qe4 Qe7 10.Bb5 Kd8 11.Qd3 Bd6 12.Nc3+/-.

5.Ne5 Ne5 6.Be5 Nf6 7.b5 Bd6 8.Bb2 Qe7 9.Be2=+ Be5 10.Qc1 0-0 11.d4 Bd6 12.0-0 Bg4 13.Nc3 Be2-/+ 14.Ne2 c6 15.c4 cb5-/+ 16.c5 Bc7 17.Qd2 a5 18.a3 Bb8 19.Nc3=+ Qd7 20.Qe2= Qc7 21.f4 Qd7 22.f5 b4 23.ab4 (23...a4 24.b5+=). gtate (1995) – lahar (1945), net–chess.com, 2005.

5.Ne5 Qf6 6.Nd7 Qb2 7.Nc3 Bb4 8.Rb1 Qa3 9.Nd5 Ba5 10.Ne5 Qd6 11.Nc7? Qc7 12.Rb5? a6 13.Rd5 Be6 (14.Ra5 Qa5–+) 0–1. gtate (1930) – alcantxz (2000), net–chess.com, 2004.

5.Ne5 Ngf6 6.a3 Bd6 7.f4 0-0 8.Be2 Re8 9.Nd7 Bd7 10.c4 (10.0-0 c5=+) 10...c6 (10...dc4!? 11.Bc4 b5-/+) 11.c5=+ Bc7 12.0-0 a5 13.Bd4 ab4 14.ab4 Ra1 15.Ba1 Qa8 (15...b5 16.Qe1=+) 16.Bd4 (16.Bf6 gf6 17.Qe1 b5+=) 16...Qa2 (16...Qd8 17.Nc3=) 17.Nc3+= White intends b5 17...Qa3 18.Qb1 White prepares the advance b5 (18.b5 Ra8+=) 18...Ra8= 19.Bf6 gf6 20.h4 (20.Rc1 f5 21.b5 d4 22.ed4 Bf4-/+) 20...b6=+ 21.b5 (21.cb6 Bb6 22.Rc1 f5=+) 21...Qc5 (21...bc5!? 22.b6 Rb8-/+) 22.bc6 Bc6 23.Rc1 Qd6 24.Nb5 Bb5 25.Qb5 Bd8 (better 25...Kg7!?=+) 26.Rc6= Qa3 (26...Qd7 27.Rb6 Qb5 28.Rb5+=) 27.Qd5+= Qa1 (27...Qa5 28.Bb5+=) 28.Kh2 (better 28.Bf1 Qa5 29.Qe4 Qd2 30.Kh2+-) 28...Qa4?? (better 28...Qe1 29.Rc1 Qc1 (29...Qh4 30.Kg1 Ra7 31.Qd8 Kg7 32.Qb6+-) 30.Qa8 Qd2+=) 29.Bc4 Qa7 30.Rd6 (30.Qe4?! Qb7+-) 30...Be7 (30...Rc8 31.Rd7 Qd7 32.Qd7 Rc4 33.Qd8 Kg7 34.Qb6+-) 31.Rd7 (31.Rd7 Qd7 32.Qd7+- (32.Qa8?! Kg7+-)) 1–0. GuestCMWC – GuestVYZM, freechess.org, 2017.

5.Ne5 Ngf6 6.a3 Bd6 7.Ng4 0-0 8.c4? (8.Nf6 Nf6 (< 8...gf6 9.Qh5+=) 9.Be2 a5=+) 8...c6 (better is 8...Ng4 9.Qg4 Ne5–+) 9.cd5 cd5 10.Nc3 Ng4 11.Qg4 Ne5 12.Qd1 Be6 13.Nb5 Bg4 14.Qb3 Bb8 15.h3 Bh5 (15...Be6!?=+) 16.Nc3= Qh4? (better is 16...Nf3 17.gf3 Bf3+=) 17.Qd5+- (17.Nd5?! Rd8+=) 17...Nd3 18.Bd3 ed3 19.Qd3 Be5 20.Qb5 Rae8 21.Qb7 (21.Rc1!?+-) 21...Qc4+/- 22.f3 Bg3 (22...Qb3 23.Rb1 Bc3 24.dc3 Re3 25.Kf2+=) 23.Kd1 Rd8? (23...Re3 24.de3 Qd3 25.Kc1 Bf2=+) 24.Qe4+- (24.Qa7?! Qb3 25.Kc1 Rd2 26.Kd2 Qb2 27.Kd3 Rd8 28.Kc4 Be5=) 24...Qc7 25.Qc2 Rc8 26.Rc1 Qb7 27.Qe4 Qd7?! (27...Qb8 28.Nd5 Rc1 29.Bc1+-) 28.Nb1 (better is 28.Qd5 Rfd8 29.Qd7 Rd7 30.Ne4 Rc1 31.Kc1+-) 28...Bg6 29.Qd4 Qa4 30.Ke2 Qa6 31.Rc4?? (better is 31.d3 f6 32.Rc8 Rc8 33.Rc1+-) 31...Qc4–+ 32.Qc4 Rc4 33.Bd4?? (33.Nc3 Rfc8–+) 33...Rfc8 (better is 33...Rd4 34.ed4 Re8 35.Kd1 Bb1–+) 34.d3? (better is 34.Nc3–+) 34...Rc2 (35.Nd2 Ra2–+; 34...Rc1!? 35.Rd1 Rd1 36.Kd1 Bd3 37.Nd2–+) 0–1. Otte,Marco – Jeuken,Karin, Wag.Intcomp Wageningen, 1999.

5.Ng1 Ngf6 6.a3 Bd6 7.d3 0-0 (7...a5 8.de4 de4 9.b5-/+) 8.de4 de4 9.Ne2 (9.Nd2 Ne5=+) 9...Re8 (9...a5 10.b5-/+) 10.c4 (10.Nd2 a6=+) 10...Qe7 (10...a5 11.c5 Be5 12.Nbc3=+) 11.Nd4 Ne5?? (11...Be5 12.c5=+) 12.Be2?? (better 12.c5 Bc5 13.bc5 Qc5 14.Nd2+-) 12...Bg4 (better 12...c5 13.Nb5 Bb8=+) 13.c5? (13.f3 ef3 14.gf3 Nf3 15.Nf3 Qe3 16.Nbd2 Bf3 17.Nf3–+) 13...Nd3–+ 14.Kd2 (14.Bd3 Bd1 Pinning (14...Bd1 Deflection)) 14...Nb2 (14...Be5 15.Qc2 Nb2 16.Qb2 Bd4 17.ed4 e3 18.Kc3 Ne4 19.Kb3 Nf2 20.Rf1–+) 15.cd6 Qd6 (15...Nd1?! 16.de7 Nf2 17.Rf1 Be2 18.Ke2–+) 16.Qc2 Be2 17.Ke2 Nd3 18.Nd2 c5 19.bc5 Nc5 20.Nc4 (20.Kf1 Rac8–+) 20...Qd5 21.Rad1 (21.Nd2 Rac8–+) 21...Rac8 22.f3? (22.Nd2 Qh5 23.Kf1 Ng4–+) 22...Nd3 (better 22...Ne6!? 23.fe4 Qh5 24.Ke1–+) 23.fe4 Qc4?? (better 23...Qe4!? 24.Kf1 Rc4 25.Qc4–+) 24.Qd3 (24.Qc4 Rc4 25.Rd3 Ne4–+) 24...Ne4 (24...Qc5!? 25.Rhe1–+) 25.Qc4-/+ Rc4 26.Kf3 (26.Rc1!? Ra4 27.Nb5–+) 26...Rc3–+ 27.Rhe1 (27.Nb5 Rc2 28.Nd6 Rf2 29.Kg4 f5 30.Kh3 Nd6 31.Rd6 Re3 32.g3 Ra3 33.Rd8 Kf7 34.Rd7 Kf6 35.Rb7 Raa2–+) 27...Ra3 28.Re2 (28.Ra1 Ra1 29.Ra1 a6–+) 28...Nc3 (28...a6 29.Rb2 b5 30.Nc2–+) 29.Rd3 Ne2 (29...b5 30.Rb2 Rd8 31.Rbd2–+) 30.Ra3 Nd4 31.ed4 a6 32.d5 (32.Rc3 b5–+) 32...Rd8 (32...Kf8 33.Rc3–+) 33.Rb3 (33.Ke4 Kf8–+) 33...Rd7 (33...b5 34.Ke4–+) 34.Ke4 f6 35.Kd4 Kf8 (35...Kf7 36.Kc5–+) 36.Rb2 (36.Re3 Re7 37.Rc3 Re2 38.Rc8 Kf7 39.Rc7 Kg6–+) 36...Ke7 37.Kc5 (37.Rb6 h5–+) 37…Rc7 (37...Rc7 38.Kd4 b5–+) 0–1. GuestZDFV – averagesg, freechess.org, 2017.

6.a3 a5 +=.

6.b5 Nc5 7.Be2 =+.

6.b5 Ne5 7.Be2 Bd6 8.f4 ef3 9.Nf3 Qe7 10.0-0 0-0 11.a4 c5 12.bc6 bc6 13.Na3 Nf3 14.Bf3 Ne4 15.c4 Rb8 16.Qc2 Qh4 (16...Qh4 17.g3 Ng3–+) 0–1. algernon (2515) – stein (2675), net–chess.com, 2011.

6.b5 Be7 7.c4 (7.Be2 0-0=) 7...Nb6+= 8.Na3 (8.cd5 Nbd5 9.d3 Bg4+=) 8...Bg4 (8...Ba3 9.Ba3 dc4-/+) 9.Be2 (9.f3!? Bh5 10.Nf5+=) 9...Be2-/+ 10.Qe2 0-0 (10...Na4!? 11.Bc1 Nc5–+) 11.cd5+= Na4 12.Nc4 Nb2 13.Nb2 Qd5 14.0-0 (14.Qc4 Bc5+=) 14...Rad8 (14...Bc5 15.Nb3-/+) 15.Rac1 (15.d3!?+=) 15...Bc5-/+ (15...Qa2 A) worse is 16.Rc7 Nd5 (16...Qb2?! 17.Re7 Rb8 18.Rc7=) 17.Rb7 Qb2–+; B) 16.Nc4 Bc5 17.Ra1 Qa1 18.Ra1+-) 16.a4 (16.Nb3 Ba3 17.Rc2 Rd7+=) 16...Bd4 17.ed4 Qd4 18.Rc2 Rfe8 19.Nc4 (19.Qe3 Re7-/+) 19...Nd5–+ 20.Ne3 (20.Rb1–+) 20...Ne3 (better is 20...Qa4 21.Re1 Qb3–+) 21.de3-/+ Qd6 22.Qc4 Rd7 23.Qd4 Qd4 24.ed4 f5 25.Rc5 g6 26.Rfc1 Ree7 27.Re5 (27.Kf1 f4-/+) 27...Re5 28.de5 Kf7 29.g3 Ke6–+ (29...Ke6 30.f4 ef3–+) 0–1. Schiavo,Carlos – Del Carril,Jose Maria, corr CAPA, 1991.

6.Bc3 Ne5 7.Be2 c6 (7...Bd6 8.0-0=) 8.d3 (8.0-0 Be7=) 8...Bd6+= 9.Nd2 0-0 10.0-0 Qe7 11.de4 de4 12.a3 Neg4 13.Bg4 Bg4 14.Ne2 a5 (14...Nd5 15.Bd4-/+) 15.ba5 (15.Bf6 gf6 16.h3 Qe5+=) 15...Nd5-/+ 16.Bb2 Bc7 (16...Qh4 17.g3 Qe7 18.c4-/+) 17.c4+= Qd6 Do you see the mate threat? 18.g3 Ne7 19.Bd4 c5 (19...Qe6 20.Rb1+=) 20.Ne4= Qc6 21.Nc5 Bh3 Threatening mate... how? 22.f3 Bf1 23.Qf1 Ra5 24.Nb3 Rh5 25.Nc3 Qh6 26.Qg2 Qe6 27.Qe2 Re8 28.e4 (28.f4 Rh6=) 28...Nf5 29.f4 (29.Rd1!?=) 29...Nd4+= 30.Nd4 Bb6 31.Qd3 Qh3 32.Ra2 Ra5 33.a4 Bc5 34.Ra1 Qd7 35.Rd1 Ra4 36.Na4 Qa4 37.Kg2 Rd8 38.Qb3 Qb3 39.Nb3 Rd1 40.Nc5 b6 41.Na4 Rb1 42.Nc3 Rb2 43.Kh3 Rc2 44.Nd5 Rc4 45.Nb6 Re4 46.Kg4 g6 47.Kf3 Rb4 48.Nd5 Rb3 49.Ne3 f5 50.h3 Kf7 51.Ke2 Ke6 52.Kf3 (52.Kf2 Rb2 53.Kf3 Rh2–+) 52...Kd6 (52...Kd6 53.Kf2 Kc5–+) 0–1. Ringsborg,Allan (2275) – Krueger,Hilmar (2355), corr ICCF EM/MN/007 ICCF Email, 1998.

6.c4 Bb4 7.Qb3 Bd6 8.cd5 -/+.

6.c4 c6 7.Nc3 Bb4-/+ 8.cd5 cd5 9.Qb3 Bc3 10.Qc3 0-0 11.Be2 Ne5 12.h3 a6 13.0-0 Bd7-/+ 14.Rfc1 Nc6 15.d3 Rc8 16.de4 de4 17.Qb3 Nd4 18.Bd4 Bc6 19.Bb6 Qd5 20.Bc4 Qh5 21.g4?? Qh3–+ (22.Rab1 Ng4–+ (< 22...Qg4 23.Kf1–+)) 0–1. gtate (1900) – alaamattar (2195), net–chess.com, 2004.

5.a3 a5!? =.

5.a3 b6 6.d4 Bb7 (better is 6...e4!? 7.Nfd2 f5=) 7.de5+/- fe5 8.Ne5 c5?? (better is 8...Ne5 9.Be5 Nf6+/-) 9.Qh5+- g6 10.Ng6 Ngf6 11.Bf6 Qf6 12.Nh8 Kd8 13.Nf7 (13.Nf7 Ke7 14.Qh7+-) 1–0. ariejan (1805) – doctorfeelgood (1725), gameknot.com, 2013.

5.a3 b6 6.Nh4 g6 7.Bb5 Bg7 (better 7...Bb7!?=) 8.Bc6+- Rb8 9.Qg4 (better 9.Bd5!? Ne7 10.Bb3+-) 9...Ne7= 10.Ba4 (10.Qe6 Bb7 11.Bb7 Rb7=) 10...f5 11.Qe2 0-0 12.d3 a6 13.Bb3 c6 14.Nf3 (14.0-0 Bf6 15.Nf3 e4=+) 14...b5 (better 14...e4!? 15.Nd4 Ne5 16.de4 fe4–+) 15.e4= fe4 16.de4 Nf6 (16...Qc7 17.Nbd2=) 17.ed5 Nfd5 18.0-0 (18.Be5 Bg4 19.Nbd2 Rf5 20.Bg7 Kg7+-) 18...Qc7 (better 18...Bg4!? 19.Nbd2 e4 20.Bg7 ef3 21.gf3 Kg7 22.Qe5 Kg8 23.fg4 Qd7+-) 19.Re1 Re8 (19...Bg4 20.Nbd2 Rf5 21.Qe4 Bf3 22.Nf3+- (worse 22.gf3 a5=+)) 20.Nc3 (20.Be5 Be5 21.Qe5 Rb7+-) 20...Bf5 21.Nd5 Nd5 22.Rac1 (22.Be5 Be5 23.Ne5 Re7+-) 22...Rbd8 (22...e4 23.Nd4 Kh8 24.Rcd1= (24.Nf5? Bb2 25.Ng3 Bc1 26.Rc1 Qf4–+)) 23.Nh4 (better 23.Be5!? Qf7 24.c4+-) 23...Kh8 24.Nf5 gf5 25.Qh5 Qe7 (better 25...Rf8=) 26.Qf5+- Qe6 (better 26...Rf8!? 27.Qe4 Rf4+-) 27.Qe6+- Re6 28.f4! ef4?? (28...Nf4 29.Be6 Pinning (29.Be6 Deflection); 28...ef4 29.Bg7 Double attack (29.Re6 Pinning; 29.Re6 Deflection)) 29.Re6 (29.Bg7 Kg7 30.Re6 Ne3+-) 29...Ne3 (29...Bb2 30.Rd1 Rc8 31.Bd5 cd5 32.Rd5 Ba3 33.Ra6 Bb4 34.Rb5 Bc5 35.Kf1 Rc7+-) 30.Bg7 Kg7 31.Re7 (31.g3!? Nf5 32.gf4 Nd4+-) 31…Kf6 (31...Kf6 32.Rf7 Kg5+-). alessandrocarvalhaes (1900) – MoistDiagram (1890), lichess.org, 2020.

5.a3 c5 6.bc5+= Bc5 7.c4 Nb6 8.cd5 Nd5 9.Bc4 Be6 10.Qb3 b6? (10...Qb6 11.d4 Qb3 12.Bb3 ed4 13.Bd4+=) 11.0-0 (better is 11.e4 Nf4 12.Be6+-) 11...Qd6? (11...e4 12.Ng5 fg5 13.Bg7 Nge7 14.Bh8 Qd6+-) 12.d4+- ed4 13.ed4 (13.Bd4?! Nge7+/-; 13.Nd4?! Bd4 14.Bd4 Rc8+/-) 13...Nge7 14.dc5 bc5 15.Rd1 0-0 16.Nc3 Rfd8 (16...Rab8 17.Qc2 Qc6+-) 17.Nd5 Nd5 18.Rd2 (18.Rd5 Bd5 19.Rd1 Kh8 20.Bd5 Rab8+-) 18...Rab8 (18...Qc6 19.Re1 Bf7 20.Red1+-) 19.Qc2 (better is 19.Qa2!? Qd7 20.Rad1 Qa4+-) 19...Qb6 20.Rad1 Qc6 (20...Nf4 21.Rd8 Rd8 22.Rd8 Qd8 23.g3 Bc4 24.Qc4 (24.gf4?! Qd3 25.Qd3 Bd3+/-) 24...Nd5 25.Qc5+-) 21.Qe4 (better is 21.Bd3 Qb6 22.Bh7 Kh8 23.Bc1+-) 21...Bf7 (21...Rd6+-) 22.Qc2 (better is 22.Bd5 Bd5 23.Rd5 Rd5 24.Rd5 (24.Qd5?! Qd5 25.Rd5 Rb2+-) 24...Rb2 25.Rd8 Kf7 26.Qh7+- (26.Qc6?? Rb1 27.Rd1 Rd1 28.Ne1 Re1)) 22...Rd7?? (22...Be6 23.Bd3 Qb6 24.Bh7 Kh8+-) 23.h3 Rdb7 (23...Kh8+-) 24.Bd5 Bd5 25.Rd5 Rb2 (25...c4 26.Rd8 Qe8 27.Re8 Re8 28.Qc4 Kh8 29.Qc6+-) 26.Rd8 Kf7 (26...Rd8 27.Rd8 Kf7 28.Qb2+-) 27.Qc4 (27.Ng5! fg5 28.Qf5 Ke7 29.Qf8 Ke6 30.Re1 Re2 31.Re2 Qe4 32.Re4) 27...Ke7+- 28.Rb8 (better is 28.Qg8! Rd8 29.Qg7 Ke6 30.Re1 Qe4 31.Re4 Kd5+-) 28...Rb8 29.Nd4! Qb6 30.Nf5 Ke8 31.Qg8 1–0. Fournier,Frederic (1730) – Grimoud,Jacques (1820), Open \ Paris FRA, 2002.

5.a3 c6 6.d3 Bd6 7.Be2 Ne7 8.c4 0-0 9.cd5 cd5 10.0-0 b6 11.Nbd2 Bb7 12.Qb3 Kh8 13.Rac1 Rc8 14.Rc8 Qc8 15.Rc1 Qb8 16.h3 Rc8 17.Rc8 Qc8 18.Qc3 (18.d4 e4 19.Ne1 a6=) 18...Qc3 19.Bc3 Kg8 20.g4 (20.d4 e4 21.Ne1 Kf7=) 20...h6 (20...Kf7 21.d4=+) 21.Bb2 (21.d4 a6=) 21...Kf7 22.Nb3 (22.b5 Ke6=+) 22...Ke6 (better 22...a6=+) 23.e4 (23.d4 a6=+) 23...d4 (better 23...de4!? 24.Nfd2 ed3 25.Bd3 a6-/+) 24.Nfd2 (24.Bd1 Kf7=) 24...b5 (24...Ng6 25.Nc4 Nf4 26.Bf1=+) 25.f3 (25.Bd4 ed4 26.Nd4 Kf7 27.Nb5 Bf4=) 25...a6 (25...Kf7 26.Bc1=+) 26.Kf2 (26.f4 Kf7=) 26...Bc7 (26...g5 27.Na5 Ba8 28.Bc1=+) 27.Bc1 (27.f4 Kd6=) 27...Nc8 (27...g5 28.h4=+) 28.Nf1 (28.f4 g5 (worse 28...ef4 29.Nd4 Kf7 30.N4b3+=) 29.fe5 fe5= (29...Be5? 30.Nf3+-)) 28...Nd6 (28...g5 29.Kg3=+) 29.Ng3 Bb6 30.Nh5 (30.Nf5 Nf5 31.gf5 Kd6=) 30...Ne8 (30...Kf7!?=+) 31.Ng3 g5 (31...Nf8!?=) 32.Nf5+= h5 (32...Nd6!? 33.Nh6 Nf7+=) 33.gh5+- Nf8 (33...Nd6 34.Nd6 Kd6+-) 34.h6 (34.h4 gh4 35.Nh4 Kf7+-) 34...Kf7? (better 34...Nd6!? 35.Nc5 Bc5 36.Ng7 Kd7 37.bc5 Nf7+-) 35.h4 (35.f4 Kg6 36.fg5 fg5+-) 35...gh4 36.Nh4 Bc8 (36...Nd6 37.f4+-) 37.Kg3 (37.f4 Nd6+-) 37...Nh7 (better 37...Be6 38.Nc5 Bc5 39.bc5 Bd7+-) 38.f4 Be6 (38...Ke7 39.Bg4 Bg4 40.Kg4+-) 39.Nc5 Bc5 (39...Nc7 40.Nf3 (40.Ne6?! Ne6 41.Bd1 Bc7+-) 40...Bc8 41.fe5+-) 40.bc5 Bd7 (40...Bb3 41.Bh5 Ke7 42.fe5 fe5 43.Ng6 Ke6 44.Ne5 Ke5 45.Bf4 Kf6 46.Be8+-) 41.fe5 (41.Bh5!? Kg8+-) 41...fe5 42.Bg4 (42.Bh5 Kf6 43.Bg6 Nf8+-) 42...Bg4 43.Kg4 Nef6 (43...Ke6+-) 44.Kf5 Nd7 (44...Nf8 45.Nf3 Ng8 46.Ng5 Ke8 47.h7 Ne7 48.Ke5+-) 45.c6 Nb6 46.Ke5 a5 (46...Nf8 47.Nf5+-) 47.Kd4 b4 48.ab4 ab4 49.Kc5 b3 (49...Nc8+-) 50.Kb6 1–0. Fournier,Frederic (1845) – sstranyy (1930), Active, 2005.

5.a3 c6 6.Be2 Bd6 7.0-0 Ne7 8.d3 0-0 9.Nbd2 Kh8 10.c4 Qc7? (better is 10...b6!?=) 11.c5+/- Nc5 12.bc5 Bc5 13.d4 Bd6 14.de5 fe5 15.Qc2 (better is 15.e4!?+/-) 15...e4= 16.Nd4 Bh2 17.Kh1 Qd6 18.f4?? (18.N2f3 ef3 19.Nf3 Rf3 20.Bf3-/+) 18...Qh6–+ 19.Rad1 (19.Qd1 Bg3 20.Bh5–+) 19...Bg3 20.Kg1 (20.Bh5 Qh5 21.Kg1 Qh2) Qh2 0–1. Fournier,Frederic (1975) – agemo (2140), Active, 2004.

5.a3 Bd6 6.c4 c6 7.c5 Bc7 8.Be2 Nh6 9.0-0 0-0 10.d3 a5 11.e4 (11.Qa4 Ra6=) 11...d4 12.Nbd2 ab4 13.ab4 Ra1 14.Qb3 Kh8 15.Ra1 Qe7 16.Ra7 Bb8 17.Ra8 b6 18.cb6 Bb7 19.Ra5 White prepares the advance b5 19...Nb6 20.b5 c5 21.Ne1 (21.Qc2 Bd6=) 21...f5 22.Bf3 fe4 (22...Qh4 23.Qc2=) 23.Ne4 (23.Be4 Ng4 24.Nef3 Be4 25.Ne4 Nf6+=) 23...Bd5 (23...Qh4 24.Qc2 (24.Nc5?? Ng4 25.Bd4 ed4–+) 24...c4 25.g3= (25.dc4 Ng4 26.Bg4 Be4–+)) 24.Qa3 The backward pawn on c5 becomes a target 24...Bd6 25.Nd6 Qd6 26.Ra6 Bf3 27.Nf3 Rf3 (27...Ng8!?=) 28.gf3+- Qd5?? (better 28...Ng8+-) 29.Rb6+- Qf3 30.Rb8 Ng8 31.Qb3 (31.Qc5?! Qg4 32.Kf1 Qd1 33.Kg2 Qg4 34.Kh1 Qf3 35.Kg1 Qg4 36.Kh1 Qf3 37.Kg1=) 31…e4 1–0. DEFFM – GuestHWWL, freechess.org, 2018.

5.a3 Bd6 6.c4 c6 7.cd5 cd5 8.Bb5 Ne7 9.0-0 0-0 10.d3 (10.Nc3 Nb6=) 10...a6=+ 11.Ba4 b5 12.Bb3 Nb6 13.e4 Be6 14.Nbd2 Kh8 (14...a5 15.ba5 Ra5 16.d4=) 15.ed5 Bd5 16.Nh4 (16.d4 ed4 17.Bd5 Ned5 18.Bd4 Re8=) 16...Qd7 17.Bd5 Nbd5 18.Ne4 Bc7 19.Nc5 Qd6 20.Qg4 Nf4 21.Nf5 (21.Rfd1!?=) 21...Nf5-/+ 22.Qf5 Rad8 (22...Bb6 23.d4 Qd5 24.Qg4-/+) 23.g3=+ Ne2 24.Kg2 Nd4 (better 24...Bb6!? 25.Rfe1 Bc5 26.bc5 Nd4 27.Bd4 Qd4=+) 25.Bd4+= Qd4 (worse 25...ed4 26.Ne6+-) 26.Ne6 (26.Ne6 Qd7 27.Qh3+=) 1–0. GuestSKYR – GuestWXCL, freechess.org, 2017.

5.a3 Ne7 6.c4 c6 7.d4 e4 8.Nfd2 Nf5 9.Nc3 Nb6 10.cd5 Nd5 (better 10...cd5!? 11.Rc1 Bd6+=) 11.Nce4 Be6 12.Bd3 Be7 13.0-0 (13.Nc5 Bc5 14.bc5 b6+-) 13...0-0 (13...Nde3 14.fe3 Ne3 15.Qh5 Bf7 16.Qe2 Nf1 17.Rf1+/-) 14.Nc5+- Bc5 15.dc5 (better 15.bc5 Nfe7 16.Qc2+-) 15...Nfe3?? (better 15...Nde3 16.Qe2 Nf1 17.Qe6 Rf7 18.Qf5 g6+-) 16.fe3+- Ne3 17.Qe2 Nf1 18.Qe6 (18.Nf1?! Qd7+/-; 18.Rf1?! Qe8+-; 18.Kf1?! Re8 19.Ne4 b5+/-; 18.Qf1?! b5+-) 18...Kh8 (18...Rf7 19.Bc4 Nd2 20.Qf7 Kh8+-) 19.Qh3 (19.Rf1?! Qd3 20.Bc1 Rfe8+=; 19.Kf1?! Qd3 20.Qe2 Qf5 21.Qf3 Qc2+=; 19.Nf1?! Qd3 20.Re1 Rad8+/-; 19.Bf1?! Qd2 20.Qe2 Rfd8+/-) 19...f5 20.Rf1 (20.Bf1?! Qd2 21.Bc3 Qf4+/-) 20...Qg5 21.Rf5 (better 21.Bf5!? Rf5 22.Qf5 Qf5 23.Rf5 Kg8+-) 21...Rf5 22.Bf5 h6 23.Ne4 Qd8 24.Qh6 Kg8 25.Qg7 1-0. PEREIRA – Bambu, internet, 2022.

5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Be2 c6 10.Nh4 Ne7 11.Bh5 g6 12.Bg6?? (better is 12.Be2+=) 12...hg6–+ 13.Ng6 (13.Nf3–+) 13...Ng6 14.0-0 e4 15.Qg4 (15.h3–+) 15...Bh2 16.Kh1 Nde5 (better is 16...Be5!? 17.Kg1 Ndf8 18.Be5 Bg4 19.Bg3–+) 17.Qe2 Bf4 18.Kg1 Bg4 (18...Qd7 19.ef4 Nf4 20.f3 Ne2 21.Kf2 ef3 22.gf3 Rh2 23.Ke1–+) 19.f3 ef3 (19...Bh2 20.Kf2 ef3 21.gf3 Bf3 22.Qf3 Nf3 23.Kf3–+) 20.Rf3 (20.gf3 Bh2 21.Qh2 Nf3 22.Rf3 Rh2–+) 20...Nf3 21.gf3 Bh2 22.Kf1 Bh3 23.Kf2 f5 24.Ke1 Qh4 25.Kd1 Qg3 26.Bh8 Bg1 27.c3 Bf2 28.Kc2 f4 29.Bd4 Bf5 30.Kb3?? fe3 31.Be3 Qd6?? 32.Bf2= Kd7 33.bc6 Qc6 34.d3 Qb5-/+ 35.Kc2?? Qa4 36.Kc1? Nf4 37.Qc2 Qc6 38.Qd2?? Bd3 39.Qf4+- Qc4 40.Qc4 Bc4 41.Bd4 b5 +-. stoker – ERIC3, Live Game Caissa's Web, 2005.

5.b5 c6 6.a4 Bd6 7.c4 Ne7=+ 8.cd5 cd5 (8...Nd5 9.e4 Nf4 10.d4=) 9.Be2= 0-0 10.0-0 Bb4 (10...Nb6 11.d3=) 11.Qb3 Ba5 (11...Bd6 12.d4=) 12.Rc1 b6 (12...Rf7 13.d4 e4 14.Nfd2+=) 13.d4+- e4 14.Nfd2 Bd2 (14...f5 15.Bc3+=) 15.Nd2+- f5 16.a5 (16.Ba3 Nf6+-) 16...Bb7 (16...ba5 17.Bc3+-) 17.Ba3 (better 17.a6 Bc8 18.Ba3+-) 17...Rf6?? (better 17...Nf6+-) 18.a6+- Bc8 (18...Nc5 19.dc5 Ba6 20.ba6 bc5 21.Bc5 Nc6+-) 19.Be7 Qe7 20.Qd5 Kh8 21.Qa8 1–0. GuestWRJV – KimTrump, freechess.org, 2018.

5.b5 Bd6 (--> 1.b4 e5 2.b5 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 f6).

5.c4 Nb6 6.cd5 (6.c5 Nc4 7.Bc3 a5=) 6...Nd5 7.Qb3 (better 7.a3=) 7...Bb4?? (better 7...Nb4 8.a3 Nc6=+) 8.e4+- Bd2 (8...Nge7!?+-) 9.Nbd2 Nf4 10.Bc4 Ne7 (10...Qd7 11.Bg8 Nd3 12.Ke2 Nb2 13.Bh7 Rh7 14.Rhc1+-) 11.0-0 Bd7 (11...Qd7 12.Bf7 Kf8 13.Rfd1+-) 12.Ne5! (12.Qb7?! Rb8 13.Qa7 Rb2+=) 12...fe5 13.Be5 Bc6?? (13...Ne6 14.Be6 Be6 15.Qe6 Qd2+-) 14.Bf7 Kf8 15.Bf4 Qd4 16.Be3 (16.Bh5 g6 17.Bf3 Ke8+-) 16...Qf6 (16...Qa4 17.Be6 Qb3 18.ab3+-) 17.Be6 Rd8 (17...a5 18.Bc4+-) 18.Rad1 Rd6 (18...b6 19.Nf3 Ra8 20.Bg5+-) 19.Bh3 Qe5 (19...b6 20.e5! Qe5 21.Nc4+-) 20.Nc4 Qe4 21.Nd6 (21.Nd6 cd6 22.Rd6+-) 1–0. DEFFM – GuestJWGD, freechess.org, 2018.

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 Nbd7).

4.a3 e5 5.Nf3 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6).

4.a3 e6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Nbd7).

4.a3 e6 5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3).