2.a3 c6 3.e3 Nf6 4.Nf3 e5 (4...e6 5.Bb2=) 5.d4 (5.Ne5 Be7+/-) 5...d6 (better 5...e4 6.Nfd2 d5=+) 6.de5+/- de5 7.Qd8 Kd8 8.Ne5 Ke8 (8...Be6 9.Bb2+/-) 9.Bc4 Bd6?? (better 9...a5+/-) 10.Nf7+- Rf8 (10...Bb4 11.ab4 Rf8 12.Ne5+-) 11.Nd6 Kd7 (11...Ke7 12.Nc8 Rc8 13.Bb2+-) 12.Nf5 b5 1-0. jthc (2055) - Thiago (1775), Rated Bullet game, lichess.org, 2014.

2.a3 d6 3.c3 Nf6 4.Nf3 (4.d4 Nbd7=) 4...e5=+ 5.e3 Be7 6.Be2 0-0 7.0-0 e4 8.Nd4 c6 9.Qb3 Kh8 10.Bb2 d5 11.c4 Nbd7? (11...dc4 12.Bc4 Bd6 13.f3=) 12.Nc3?? (better 12.Ne6 Qb6 13.Nc3 dc4 14.Bc4+-) 12...dc4= 13.Bc4 b5 (13...Ne5 14.Be6=) 14.Be2 (better 14.Be6 Ne5 15.Bf5 Bf5 16.Nf5+=) 14...Nb6? (better 14...Ne5+=) 15.Nc6+- Qe8 16.Bb5 (better 16.Ne7 Qe7 17.Nb5+-) 16...Qh5?? (better 16...a6 17.Ne7 ab5 18.Nc8 Rc8+-) 17.Ne7+- Ng4 (17...Bd7 18.Bd7 Nbd7 19.f3+-) 18.h3 Bb7 (18...Ne5 19.Ncd5 Bd7 20.Qc3 Nd5 21.Qe5+-) 19.Ncd5 (better 19.hg4 fg4 20.d3 Rf7+-) 19...a6 (19...Qf7 20.hg4 fg4 21.Bg7 Qg7+-) 20.Nb6 ab5 21.Na8 Ba8 22.Nd5 (22.hg4!? Qg4 23.Qe6 Bb7+-) 22...f4 (22...Qf7 23.hg4 Bd5+-) 23.Nf4 Rf4 24.ef4 e3 25.de3 (better 25.Qe6 Bd5 26.Qc8 Bg8 27.hg4 Qd5 28.fe3 Qb3+-) 25...Bg2 26.Kg2 (26.Rad1!? Bc6 27.Rd8 Be8+-) 26...Nf6 27.Rg1 Qg6 28.Kf1 Qe4 (28...Qh6 29.Qf7 Qh3 30.Ke1 Qg4 31.Qf8 Ng8 32.Qg7 Qg7 33.Bg7) 29.Rd1 (29.Bf6 Qd3 30.Qd3 h5 31.Qd7 gf6 32.Qg7) 29...h6 (29...Qe8 30.Bf6 h6 31.Rg7 Qf8 32.Rd8 Qd8 33.Re7) 30.Rd8 Kh7 (30...Ne8 31.Rg7 Qb1 32.Ke2 Qb2 33.Qb2 h5 34.Re8) 31.Bf6 (31.Qg8 Ng8 32.Rg7 Kh8 33.Rdg8) 31...Qc2 (31...Qg2 32.Rg2 h5 33.Rg7 Kh6 34.Rh8) 32.Qg8 (32.Rg7) 1-0. jthc (1815) – BULLETON, Rated Bullet game, lichess.org, 2014.

2.a3 e5 3.Nf3=.

2.Ba3 e6 3.c4 a5 4.b5 Ba3 5.Na3 Nf6 6.g3 0-0 7.Nf3 Qe7 8.Nc2 d6 9.Bh3 Nbd7 10.0-0 Nb6 11.d3 Bd7 12.Nfd4 d5 13.Ne3 dc4 14.Nc4 Qc5 15.e3 (15.Nb6 Qb6 16.Qa4 Kh8=) 15...e5=+ (15...Bb5? 16.Ne6 Qe7 17.Nf8 Nc4 18.Nh7 Kh7 19.Bf5 g6 20.dc4 Bc4 21.Qc2 Bf1 22.Bg6 Kg7 23.Rf1+-) 16.Nb6 Qb6 17.Qb3 Kh8 18.Nf3 (18.Nf5? g6-+ (18...Qb5?! 19.Qb5 Bb5 20.Rfd1=+; 18...Bb5 19.Rfb1 Bd7 20.Qc3+=)) 18...Rae8 Black plans e4 19.d4 Be6 (worse 19...Bb5 20.Rfb1 ed4 21.Qb5 Qb5 22.Rb5 de3 23.Rb7 ef2 24.Kf2 Ne4 25.Kg1+/-; worse 19...Qb5 20.Ne5 Qb3 21.ab3+/-) 20.Qa4 e4 21.Ne5 g5 (21...Rd8 22.Bg2=) 22.Rfc1+= f4 (22...Rd8 23.Bf1+=) 23.Bf1 (23.Be6!? Re6 24.Nc4+/-) 23...fe3 24.fe3 Ng4 25.Ng4 Bg4 26.Rc5 Qf6 27.Qc2 (27.Rc7?? Qf2 28.Kh1 Bf3 29.Bg2 Qg2) 27...Re7 28.Rc1 (28.Rc7?? Rc7 29.Qd2 Rfc8-+) 28...Qf3 29.Qd2 (29.Rc7 Rc7 30.Ra1 Rc2 31.Re1 Qf2 32.Kh1 Qh2) 29...h6 30.R5c2 b6 31.d5 Qf5 32.Qd4 Kh7 33.d6 cd6 34.Qb6 (34.Qd6?! Rd7 35.Qd7 Qd7=) 34...Ref7 35.Qd6 Bh3 36.Bh3 Qh3 37.Qd1 Qf5 38.a4 g4 39.Qd2 Qf3 40.b6 Rb8 41.Rc6 h5 (41...Kg7 42.Qe1+/- (42.Qa5?! Qe3 43.Kh1 Qf3 44.Kg1 Qf2 45.Kh1 Qf3 46.Kg1 Qf2 47.Kh1 Qf3=)) 42.Qe1+- (42.Qa5?! Qe3 43.Kh1 Qf3 44.Kg1 Qf2 45.Kh1 Qf3 46.Kg1 Qf2 47.Kh1 Qf3=) 42...Rbb7 (42...Rd8 43.Rc7 (43.Qa5?? Rd1 44.Qe1 Qf2 45.Kh1 Qe1 46.Kg2 Qd2) 43...Kg6 44.Rf7 (44.Qa5 Rd1 45.Qe1 Qf2 46.Kh1 Qe1 47.Kg2 Qd2) 44...Kf7 45.b7+-) 43.Rd1 (43.R1c5 Rbd7 44.Rh5 Kg8+-) 43...h4 44.gh4 Rg7 45.Rdd6 g3 46.h3 Qh5? (better 46...Rbf7 47.Rh6 Kg8 48.Rc8 Rf8 49.Rf8 Qf8+-) 47.Qd1 Qd1 48.Rd1 Rgf7 49.Rd5 1-0. marekt (2165) - chriscooperden (2135), gameknot.com, 2017.

2.a4 d6 3.d4= Nf6 (3...e5 4.de5 de5 5.Qd8 Kd8 6.c3=) 4.Nf3 h6 (4...e6 5.e3=) 5.e3+= e6 6.Be2 d5 (6...g5 7.0-0+=) 7.Bd2 (7.Ne5 Rg8+=) 7...Bd6 8.0-0 0-0 (8...Ne4 9.Na3+=) 9.Na3 Ne4 10.c4 Nd2 (10...Nd7 11.c5 Be7 12.Qc2+=) 11.Qd2 (< 11.Nd2 Bb4 12.Nf3 f4=+) 11...c6 12.c5 (12.b5 b6+=) 12...Bc7 13.Ne5 (better is 13.Nc2+=) 13...f4? (better is 13...Be5!? 14.de5 Nd7+=) 14.ef4+/– Nd7 15.b5 Nf6 (15...Ba5!? 16.Qe3 Nb8+–) 16.bc6 Ne4 (16...bc6 17.Nc6 Ne4 18.Qe3 (18.Nd8?! Nd2 19.Nc6 Nf1 20.Bf1 Bd7=) 18...Bf4 19.Nd8 Be3 20.fe3 Rd8 21.Bd3+–) 17.cb7 Bb7 (17...Nd2?? 18.ba8Q (18.ba8R?! Be5 19.fe5 Nf1 20.Rf1 Qa5+–; 18.ba8N? Be5 19.fe5 Nf1 20.Rf1 Bd7–+) 18...Nf1 19.Rf1 Be5 20.fe5+–) 18.Qe3 Ba5 (18...Be5 19.fe5 (19.de5?! d4 20.Qh3 Nc5+=) 19...Bc6 20.Nb5+–) 19.Ra2 Qf6 (19...Nc3 20.Bg4 Qe8 21.Rc2+–) 20.Nd7 Qf4 21.Nf8 Qe3 (21...Rf8 22.Rb2 Bc6 23.Qf4 Rf4 24.Rb8 Rf8 25.Rf8 Kf8 26.Nb5+–) 22.fe3 Rf8 23.Bd3 (23.Rb2 Bc6 24.Rf8 Kf8 25.Rb8 Kf7+–) 23...Re8 (23...Bd2 24.Nc2+–) 24.Be4 (24.Nb5 Bd2 25.Rf3 a6+–) 24...de4 25.Nb5 Bd5 26.Raf2 (better is 26.Rb2 a6 27.Nd6 Rd8+–) 26...Bc4 (26...e5 27.Nd6 (27.Na7 ed4 28.ed4 e3=) 27...Re6 28.Rf5+–) 27.Rc1 (< 27.Na7 Bf1 28.Kf1 Ra8+–) 27...Bd3 (27...Bb3 28.Rb2 Bd5 29.Na7+–) 28.Na7 Bd8 (28...Ra8 29.Nc6 Bc7 30.Ra1+–) 29.c6 Bc7 (29...Bh4 30.g3 Bg5 31.c7 Be3 32.c8Q Rc8 33.Rc8 (33.Nc8?! Bc1 34.Ne7 Kh7+/–) 33...Kh7 34.Nc6+–) 30.Nb5 (30.Rb2 Ba6+–) 30...Rc8 (30...Bb6 31.Nd6 Rd8 32.Nb7+–) 31.Nc7 Rc7 32.Rb2 Ba6 (32...Kf8 33.Rb7 Rc8 34.a5+–) 33.Rb6 Bc8 34.Rf1 Kh7 35.a5 e5 (35...h5 36.a6+–) 36.d5 Ra7 37.Ra1 Ba6 38.d6 (better is 38.Ra6 Ra6 39.c7 Ra8+–) 38...Kg8 39.d7 Rd7 1–0. market (2170) – fub (1735), GameColony.com, 2002.

2.b5 c5 3.Bb2 Nf6 4.e3 e6 5.a4 (5.Nf3 a6=) 5...d5= 6.Nf3 Nbd7 7.Be2 Bd6 8.0-0 Qe7 (8...0-0 9.c4=) 9.c4 e5 (9...0-0 10.Nc3=) 10.d4 (10.cd5 Nd5 11.Nc3 Nc3 12.dc3 Bc7=) 10...cd4= 11.ed4 e4 12.Nfd2 (12.Nh4 Qe6 13.Qc1 0-0+=) 12...b6 (12...0-0 13.Qb3=) 13.Na3 (13.a5 Rb8+=) 13...a6 (13...0-0 14.Qb3=+) 14.ba6 (14.cd5!? Nd5 15.Nac4+=) 14...Ba6= (worse is 14...Ra6 15.Nb5 Ra8 16.cd5 Nd5 17.Qb3+/-) 15.cd5 Be2 (worse is 15...Nd5 16.Ba6 Ra6 17.Qc1+=) 16.Qe2 Ra4?? (16...Nd5!? 17.Nb5 Bb4=) 17.Qb5 (17.Nb5 Ra1 18.Ra1+/- (worse is 18.Nd6 Qd6 19.Ra1 Qd5=+)) 17...Ra5 (17...Ng4 18.h3 (18.Qa4 Bh2 19.Kh1 Qh4 20.Qd7 Kd7 21.Nf3 ef3 22.g3 Bg3 23.Kg1 Qh2) 18...Rb4 19.Qc6+/-) 18.Qc6 (18.Qb3 Ng4 19.h3 e3 20.fe3 Qe3 21.Qe3 Ne3+/-) 18...0-0 Attacks the isolani on d5 (18...Rd5 19.Ndc4 Bh2 20.Kh2 Ng4 21.Kg1=) 19.Ndc4+/- Rd5 20.Nb5?? (20.Ne3 Qe6 21.g3+/-) 20...Bf4?? (better is 20...Nb8 21.Qd6 Rd6 22.Ncd6 Nd5-+) 21.g3 (better is 21.Ba3 Qe8 22.Rfb1+/-) 21...Bh6? (21...Nb8 22.Qb6 Qd7+-) 22.Ba3+- Qf7 (22...Nb8 23.Qa8 (23.Be7 Nc6 24.Bf8 Kf8 25.Ra8 Ke7+/-) 23...Qf7 24.Bf8 Qf8 25.Rfb1+-) 23.Bf8 Nf8 24.Ra8 (better is 24.Nb6 Rd8 25.Nc8+-) 24...N6d7?? (better is 24...Qd7 25.Qd7 N6d7+-) 25.Ncd6 Qe7 (25...Qe6 26.Re8 Nb8 27.Rb8 Bg5 28.Rf8 Kf8+-) 26.Qd5 (26.Qd5 Qe6 27.Qe6 Kh8 28.Nf7 Kg8 29.Nh6 Kh8 30.Qg8) 1-0. Bushwacker (1875) - Streader (1880), ChessWorld.net, 2020.

2.b5 d6 3.c4 e5 4.Bb2 Nf6 5.Nf3 Be7 6.e3 0-0 7.Nc3 c6 8.Be2 d5 (better 8...e4 9.Nd4 a6=) 9.0-0?? (better 9.Ne5!? Be6 10.0-0+/-) 9...e4 (9...d4 10.Ne5 dc3 11.Bc3-/+) 10.Nd4? (10.Ne5 Qd6 11.f4 Be6=) 10...Bd6?? (better 10...c5!? 11.Nb3 d4 12.ed4 cd4 13.Ne4 fe4 14.Bd4 a5-/+) 11.a4 (better 11.cd5 cd5 12.f4+=) 11...Nbd7?? (11...c5 12.Nb3 Be6 13.cd5 Nd5 14.Nd5 Bd5 15.Rc1=) 12.f3 (12.Ne6 Qe7 13.Nf8 Qe5+-) 12...Qe8 (better 12...Nb6!? 13.cd5 cd5+=) 13.Nf5+/- Bh2 14.Kh2 Qh5 15.Kg1 Qf5 16.fe4 Qg6 17.cd5 Ne5 (better 17...cb5 18.Ba3 Rf7 19.Bb5 Qg5+-) 18.bc6?? (18.dc6 Bh3 19.Qb3 Kh8=) 18...Bg4?? (18...Bh3 19.Bf3 Qg3-+) 19.Bg4 (19.cb7 Rab8 20.Ba3 Bh3+-) 19...Neg4 (19...Nfg4 20.Qe2 bc6 21.Ba3 Rf1 22.Rf1+-) 20.cb7 (better 20.Ba3 Rf7 21.Qb3+-) 20...Qh5 21.Rf4 (21.Rf5 Qh2 22.Kf1 Rab8+/-) 21...Qh2 (21...Rab8 22.Qf3 Qh2 23.Kf1+=) 22.Kf1 Qh1? (22...Rab8 23.Ke2 Qg2 24.Kd3 Nf2 25.Rf2 Qf2+=) 23.Ke2+- Qg2 24.Kd3 Nf2 (24...Rab8 25.Ba3 Rf7+-) 25.Kc2 (better 25.Rf2 Qf2 26.ba8R Ra8 27.Qf1+-) 25...Nd1-/+ 26.Rd1?? (26.ba8Q Ne3 27.Kd3 Ra8 28.Rf6 gf6 29.Ke3-+) 26...Rab8-+ 27.e5 (27.Ba3 Rf7 28.Rb1-+) 27...Nd5 28.Rf8 Rf8 29.Nb5 (29.Nd5 Qd5 30.Bc3 Qa2 31.Kd3 Qa4-+) 29...Nb4 (better 29...Ne3 30.Kc1 Nd1 31.b8Q Rb8 32.Kd1 Qf1 33.Kc2 Qc4 34.Bc3 Qa4 35.Kd3 Qb5 36.Ke3-+) 30.Kb3 a5 31.Bc3 (31.Nc3-+) 31...Qd5 32.Ka3 (32.Kb2 Qa2 33.Kc1 Nd3) 32...Nd3 (32...Qa2) 33.Rb1 Qb7 34.Rb3 (34.Ba5 Ne5 35.Bc3 Nc4 36.Kb3 Qd5-+) 34...Qe7 35.Ka2 Nc1 (better 35...Qe6!? 36.Nd4 Qc4 37.Ka3-+) 36.Kb2 Nb3 37.Kb3 Qe6 38.Kb2 (38.Ka3 Rf1-+) 38...Rf2 (38...h5 39.Ba5 h4 40.Bb4-+) 39.Ba5 (39.Ka3 h5 40.Ba5 h4-+) 39...Qe5 40.Kb3 Rd2! 41.Bd2 (41.Bd2 Qd5 Double attack) 41...Qd5 42.Kc2 Qc4 (better 42...Qa2 43.Kc3 Qa4-+) 43.Bc3 (43.Nc3-+) 43...Qa4 44.Kd3 Qb5 (44...Qb5 45.Ke4 h5-+) 0-1. Zpytasz (1750) - vitruvio (1730), Rated Rapid game, lichess.org, 2016.

2.b5 e5 3.e3 Nf6 4.Bb2 d6 5.c4 Be7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.b5).

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

2.c3 d6 3.Qa4 (3.d4 Nf6=) 3...Qd7 4.b5 b6 (4...Nf6 5.d4=+) 5.g3 (5.e4 fe4 6.Qe4 c6+=) 5...Nf6 (5...Bb7 6.Nf3=+) 6.Bh3 (6.Bg2 d5=) 6...e6 (6...Bb7 7.Nf3=+) 7.d4 (7.Bg2 d5=) 7...e5 (7...Bb7 8.Nf3=+) 8.Nd2 (8.Bg2 e4=) 8...e4 9.f3 (better is 9.Nc4=) 9...Be7 (better is 9...Bb7=+) 10.fe4+/– Bb7 (better is 10...Ng4+/–) 11.c4?? (11.Bf5!? Qd8 12.Ngf3+–) 11...g6 (better is 11...Ne4 12.Ngf3 a6=+) 12.ef5?? (better is 12.d5 a6 13.ef5 gf5 14.e4 ab5 A) < 15.Qb5 Qb5 16.cb5 A1) 16...Ne4?! 17.Ne4 (17.Bf5? Nd2 18.Bb2 Rf8–+) 17...fe4 18.Bb2=; A2) 16...fe4–/+; B) 15.Qc2 bc4 16.Bf5+/–) 12...Bh1–+ 13.fg6 Qd8 14.g7 (better is 14.Bf5!?–+) 14...Rg8 15.c5 (15.Ngf3 Rg7 16.Kf1 d5–+) 15...Rg7 (15...dc5!? 16.Ngf3 Nbd7 17.Bb2–+) 16.Nc4 (16.c6–+) 16…Bd5 (better is 16...dc5 17.dc5 Bc5 18.Be3–+). Izzy5150 – gengar, ChessWorld.net, 2005.

2.c3 e5 (--> 1.b4 e5 2.c3 f5).

2.c3 g6 3.b5 Nf6 4.e3 Bg7 5.d4 Bf8 (5...d5 6.c4=) 6.Be2 Bg7 7.Bf3 (7.Nf3 a6+=) 7...Bf8 (7...d5 8.Ne2=) 8.Be2 d6 (8...Bg7 9.Nf3+=) 9.Bc4 (9.Nf3 Bg7+=) 9...d5= 10.Be2 e5 (10...Bg7 11.Nf3=) 11.b6 (11.de5 Ne4+/-) 11...a6 (11...e4 12.bc7 Qc7 13.Ba3=) 12.bc7 (better is 12.de5 Ne4 13.bc7 Qc7 14.f3+/-) 12...b5?? (better is 12...Qc7 13.de5 Qe5=) 13.cd8Q+- Kd8 14.Nd2 (better is 14.de5 Nfd7 15.Qd5 Ra7+-) 14...Nbd7 (14...e4 15.a4 ba4 16.Ba3+-) 15.Nb3 (15.de5 Ne5 16.Bb2 Ned7+-) 15...e4 16.Nc5! Ng4 (16...Nc5 17.dc5 Passed pawn; 16...Bc5 17.dc5 Passed pawn) 17.Ne6 Ke7 18.Bg4 (18.Nc7 Rb8 19.Nd5 Kd8 20.Bg4 Bb7+-) 18...fg4 (18...Ke6 19.Be2 Nb6 20.Qb3+-) 19.Qg4 (better is 19.Nc7!? Rb8 20.Qg4 Kd6 21.Qf4 Kc6+-) 19...Nf6 20.Nc7 (better is 20.Ba3 Kf7 21.Ng5 Kg7 22.Bf8 Rf8 23.Qg3+-) 20...Be6 (20...Bg4 21.Na8 Kd7+-) 21.Nd5! Bd5 (21...Bd5 22.Qf4 Combination; 21...Nd5 22.Ba3 Double attack (22.Ba3 Decoy)) 22.Qe6 (better is 22.Qf4+-) 22...Be6 23.Bd2 (23.a4 Bg7-+) 23...Bg7 24.c4 (24.Ne2 Bc4-+) 24...Rhe8 (better is 24...bc4 25.Ne2 Rab8-+) 25.c5 Bd5 26.c6? (better is 26.Ne2-+) 26...Rac8 27.c7 (27.Rc1 Rc6 28.Rc6 Bc6 29.Bb4 Kd7-+) 27...a5 (better is 27...Rc7 28.Ne2 Rc2-+) 28.Ba5 b4 (better is 28...Ra8!? 29.Bb4 Kd7-+) 29.Bb4 Kd7 30.Ba5 (better is 30.Ne2=+) 30...Rc7?? (30...Ra8 31.Bb6 Ba2-+) 31.Bb6?? (better is 31.Bc7 Kc7 32.Ne2+/-) 31...Rc6 (31...Rb7 32.Bc5 Reb8 33.Rc1-+) 32.Bc5 Rec8 (32...Ng4 33.Rd1-+) 33.Rb1 (33.a3 Ng4 34.Rd1 Ne5 35.de5 Rc5-+) 33...R6c7 (33...Ba2 34.Rb2 Be6 35.Ne2-+) 34.Rb6 (better is 34.a3-/+) 34...Rc6?? (34...Ke8!? 35.f3-+) 35.Rc6 (35.Rb1 Ba2 36.Ra1-+) 35...Rc6 (better is 35...Kc6 36.a3 Bf8 37.Bf8 Rf8-/+) 36.Be7?? (better is 36.a3-/+) 36...Rc7 (better is 36...Ke7 37.Ne2 Rc2-+) 37.Bf6 Rc6?? (37...Bf6 38.a4-+) 38.Ke2 (better is 38.Bg7 Rc1 39.Kd2+-) 38...Bf6-+ (worse is 38...Rf6 39.Nh3-+) 39.Nf3?? (39.Kd2 Ra6 40.Nh3 Ra2 41.Kc3-+) 39...Rc1 (better is 39...ef3 40.gf3 Rc2 41.Kd3 Ra2-+) 40.Ne5 Be5 41.Rc1 Ke6 (41...Ke6 42.de5 Ba2+-). chessovolution - Lonely_Bro (1770), Rated Blitz game, lichess.org, 2021.

2.Nc3 Nc6 3.b5+= Nd4 (3...Na5 4.Nf3+=) 4.e3+/– Ne6 5.Bd3 g6 6.Bf5 gf5?? (better is 6...a6 7.ba6 Ra6+/–) 7.Qh5# 1–0. erneste – idaho, internet, 2011.

2.Nc3 e5 3.a3 Nf6 4.Nf3 (4.d4 ed4 5.Qd4 Nc6=) 4...Nc6 (4...e4!? 5.Nd4 d5=) 5.b5+= e4 (5...Nd4 6.Ne5 Qe7 7.Nd3+=) 6.bc6 ef3 7.cd7 (7.cb7 Bb7 8.ef3 Rb8+=) 7...Bd7 8.ef3 Bc5 (8...Bd6 9.Rb1 Qe7 10.Qe2 Qe2 11.Be2=) 9.d4 (9.Bc4 Qe7 10.Qe2 c6+=) 9...Bb6 (9...Qe7 10.Be2 Bd6 11.Bg5+=) 10.Bc4 Qe7 11.Ne2 Be6 (11...Ba5 12.Bd2 Bd2 13.Qd2+/–) 12.Be6+/– Qe6 13.0-0 0-0 14.Qd3 c6 (14...Rad8 15.c4+/–) 15.Bd2 (15.Re1 Rae8+/–) 15...Rad8 (15...Rae8 16.Rfe1 Qd7 17.Rab1+/–) 16.Rfe1 Qd7 17.Rad1 Kh8 (17...Rfe8 18.Bg5+/–) 18.c3 c5 (18...Bc5 19.Ng3+/–) 19.Bg5 cd4 (19...Qa4 20.Qf5 cd4 21.cd4 Qa3 22.Bf6 Rf6 23.Qg5+/–) 20.Nd4 Bd4 (20...Qd6 21.Re6 Qa3 22.Bf6 gf6 23.Qf5 Bd4 24.cd4 Rd4 25.Rde1+/–) 21.cd4 h6 22.Bf6 Rf6 23.d5 b5 24.f4 a5 25.Qc3 Qa7 26.Re5+– Qb6 27.Rb1 Rfd6 28.Re7 Rg6 29.Qd3 Qd6 30.Re5 b4 31.ab4 ab4 32.Qf5 Rf6 33.Qe4 Qc5? 34.Qb4 Qc2 35.Rbe1 Rdf8 36.g3 Qg6 37.Re6 Qg4 38.Rf6 Rf6 39.Re5 Qd1 40.Kg2 Qd3 41.Qb7 Ra6 42.Re3 Qc4 43.Re8 Kh7 44.Qf7 Rf6 45.Qg8 Kg6 46.Re7 (46...Qe4 47.Re4+–) 1–0. jaskier (2095) – ookii (1750), internet, 2007.

2.c4 b6 3.a4 Nf6 4.g4 e6 5.gf5 ef5 6.b5 g6 7.Bg2 c6 8.Nc3 Bb7 9.f4 Bg7 10.Nf3 0-0 11.Qb3 Kh8 12.Ba3 Re8 13.Ng5 Re7 14.Be7 Qe7 15.c5 Nd5 16.Nd5 cd5 17.Bd5 Bd5 18.Qd5 h6 19.Ra3 1-0. Davss (2135) - Crujerov (1805), Rated Classical game, lichess.org, 2014. (=1.c4 f5 2.b4)

2.c4 c6 3.Bb2 d5 4.c5 e6 5.e3 Nf6 6.Nc3 b6 7.d4 Be7 8.h3 (8.Nf3 0-0=) 8...0-0 9.Nge2 Ne4 10.Ne4 (10.Nf4 bc5 11.bc5 e5 12.de5 Bc5 13.Ne4 fe4=+ (worse 13...de4 14.Bc4 Kh8 15.Qh5 Bb4 16.Ke2+/-)) 10...fe4=+ 11.Nc3 a5 12.a3 (12.Na4 Nd7 13.b5 cb5 14.Bb5 bc5 15.Bd7 Bd7 16.Nc5 Rb8=+) 12...Bd7 (12...ab4 13.ab4 Ra1 14.Ba1-/+) 13.Qb3 (13.Na4 b5 14.Nb6 Ra6=) 13...b5 (13...Bh4 14.Nd1=+) 14.Be2= a4 15.Qc2 Bh4 16.g3 Bg5 17.Bc1 (17.h4 Be7=) 17...Bf6 18.Bd2 (18.Bb2!?=+) 18...e5-/+ 19.0-0-0 ed4 20.ed4 Bd4 21.Be3 Be3 22.fe3 Rf2 23.Rdf1 Rf1 24.Rf1 (24.Bf1 Qg5 25.Qf2 Qe5-/+) 24...Qg5 (24...Bh3 25.Rf4-+) 25.Qd2 (better 25.Rf4-+) 25...Qg3?? (better 25...Bh3 26.Rf4 Nd7-+) 26.Qa2?? (better 26.Nd5 Qe5 27.Nc3=) 26...Bh3 27.Nd5 Bf1 (27...cd5?? 28.Qd5 Be6 29.Qd8) 28.Ne7 (28.Nc7 Kh8 29.Na8 Qe1 30.Bd1 Qe3 31.Qd2 Qa3 32.Qb2 Qb2 33.Kb2-+) 28...Kf8 29.Bf1 (29.Nf5 Qe1 30.Bd1-+) 29...Qe1 30.Kb2 Qf1 (30...Qf1 31.Qe6 Qe2 32.Kb1 Qe3-+) 0-1. TWW_LONDON (1775) - Safety_First1 (1810), lichess.org, 2020. (=1.c4 f5 2.b4)

2.c4 Nc6 3.a3 a5 4.b5 Ne5 5.e3 Nf6 6.Bb2 Nf7 7.Bf6 gf6 8.Nc3 e6 9.g3 c6 10.Bg2 d5 11.Nge2 (11.d4 Bd7+=) 11...Bd7 (worse is 11...dc4 12.bc6 bc6 13.Bc6 Bd7 14.Ba8 Qa8 15.Rf1+=) 12.0-0 (12.d4 cb5 13.cd5 e5=) 12...Rc8 (12...dc4 13.bc6 Bc6 14.Bc6 bc6 15.Qa4+=) 13.d4 (13.d3+=) 13...Bd6 (better is 13...dc4!? 14.bc6 Bc6=) 14.c5+/– Be7 15.bc6 bc6 16.Rb1 0-0 17.Qa4 Qc7 18.Rb6 Ra8 19.Rfb1 Ra7 20.Qb3 Bc8 21.Nf4 Re8 22.Rb8 Bd8 23.Na4 Ba6 24.Bf1 Bf1 25.Kf1 e5 26.Nd5 cd5= 27.Qd5 The passed pawn on c5 will become decisive later 27...Qe7 28.R1b7 Rb7 29.Rb7 Bc7 30.Nc3 Rb8 31.Ra7 Qd8 32.Qe6 Ra8 33.Ra8 Qa8 34.Nd5 Bd8 35.c6 Qa6 36.Kg2 Kg7 37.de5 fe5 38.h4 Qc4 39.h5 Qe4 Black gets strong initiative 40.Kg1 Qb1 41.Kh2 Qc2 42.h6?? Nh6–+ 43.Qd7 Nf7 44.Kg2 Qe4 45.Kg1 Qd3 46.Kg2 h5 47.Qe6 Qe4 48.Kg1 h4 49.c7? h3–+ 50.Nf4 Bc7 51.Qg6 Kf8 52.Nh3 Qg4 53.Qc6 Bd6 54.Kh2 Kg7 55.a4 f4 56.ef4 ef4 57.Nf4 Bf4 58.gf4 Qf4 59.Kg2 Qe5 60.f3 Nd6 61.Qd7 Kf6 62.Kf2 Qc5 63.Kg2 Qe5?? (63...Qe5 64.Kf2 Qb2 65.Kg3 Nf5 66.Kh3 Qb8 67.Qc6 Kg5 68.f4 Qf4 69.Qg2 Kf6 70.Qc6 Qd6 71.Qc3 Qe5 72.Qe5 Ke5–+; better is 63...Qg5 64.Kf1 Qd2–+) 0–1. Anastasian,Ashot – Tabatadze,Tamaz, Zt, V, Ankara (Turkey), 1995. (=1.c4 f5 2.b4)

2.c4 d5 3.c5 b6 (better is 3...Nc6=) 4.c6 (better is 4.Nf3+=) 4...Nc6-/+ 5.b5 Nb4?? (5...Na5 6.Nf3-/+) 6.a4?? (better is 6.a3 c5 7.ab4 cb4 8.Nf3+-) 6...d4 (6...Nf6 7.Nf3-+) 7.d3 Be6 (7...a6 8.Na3-/+) 8.Ba3 (better is 8.Nf3-/+) 8...Na2?? (better is 8...c5-+) 9.e4 (9.Nf3 Qd5+=) 9...a6 (9...de3 10.fe3 f4 11.Qc2 fe3 12.Ra2 Ba2 13.Qa2=) 10.Bb2 (better is 10.Nf3!? ab5 11.Ng5+=) 10...ab5=+ 11.ab5 Ra5 (11...Bf7 12.Nf3 e6 13.Nd4 Bb4 14.Nd2=) 12.f4 (12.Nf3 fe4 13.de4 Qa8+/-) 12...Rb5 (better is 12...fe4 13.de4 Qa8=+) 13.Ba3?? (better is 13.Qa4 Qd7 14.Qa8 (worse is 14.Ra2 Ba2 15.Qa2 Ra5=+) 14...Qd8 15.Ra2 Ba2 16.Qa2+/-) 13...Bb3 (13...Qa8 14.Nf3 Rb1 15.Qb1 Qa3 16.Qb5 Kd8 17.ef5-+) 14.Qf3 (14.Qd2 e5 15.Bf8 Kf8 16.fe5 Re5=+) 14...c5 (better is 14...Qa8!? 15.Ne2 c5 16.Bc1-+) 15.Nd2 Qa8 (better is 15...Bf7 16.ef5 Bd5 17.Qh5 Kd7-/+) 16.Bb2?? (better is 16.Nb3 Rb3 17.Ra2 Ra3 18.Ra3 Qa3 19.ef5=+) 16...Nf6-+ 17.Ne2 e6 (better is 17...Bf7 18.Bc1 Ra5 19.ef5-+) 18.Qf2? (better is 18.Bd4 cd4 19.Nd4-+) 18...fe4 (better is 18...Ng4 19.Qf3 Ne3-+) 19.Qh4 (19.de4 Ne4 20.Nd4-+) 19...Qd5 (better is 19...e3 20.Bc3-+) 20.g4?? (20.de4 Ne4 21.Ng3 Nd2 22.Bb5 Kf7 23.Kd2-+) 20...ed3 21.Rg1 White intends g5 21...de2 22.Be2 (22.Bg2 Qd7 23.g5 c4 24.gf6 c3 25.fg7 Bg7-+) 22...d3 (better is 22...c4 23.Bf3 Qc5-+) 23.Bd1 (23.Bf3 Qd7 24.g5-+) 23...Bd1 24.Rb1 (24.Bf6 gf6 25.Qf6-+) 24...Bc2 25.g5 Bb1 26.Be5 c4 27.gf6 c3 28.fg7 cd2 29.Kd1 Bg7! 30.Bg7 (30.Bg7 Qf3 Mate attack; 30.Rg7 Qf3 Mate attack) 30...Qf3 31.Kd2 Rb2! 32.Ke1 (32.Bb2 Qe2 Mate attack) 32…d2 (32...Qe2) 0-1. Paul593 – teabun, ChessWorld.net, 2013.

2.c4 d6 3.Bb2 Nf6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 cb5 9.cb5 g6 10.Nf3 Bg7 11.Be2 0-0 12.0-0 Be6 13.Nd4 Bd7 14.Nc3 Qb6 15.h3 Ne4 16.Ne4 fe4 17.f3 e5 18.Nb3 ef3 19.Bf3 Qb5 20.Nc1 Nc6 21.Ne2 d5 22.Nc3 Qd3 23.Nd5 Bh3 24.Nc3 Bg2 25.Bg2 Rf1 26.Bf1 Qf5 27.Bg2 h5 28.Ne4 h4 29.Nd6 Qg5 0–1. axtur777 – Den1sqa, lichess.org, 2019.

2.c4 g5 3.Bb2 Nf6 4.h4 gh4 (4...g4 5.e3=) 5.Nf3 Bg7 6.Rh4 e6 7.Ne5?? (7.d4 Nc6+=) 7...Nc6?? (better is 7...Ng4 8.Rg4 fg4–+) 8.Nc6= bc6 9.e3 (9.g3 a6+=) 9...Bb7 (9...Ng4 10.Bg7 Qh4 11.g3–/+) 10.Be2 (10.d4!?+=) 10...Qe7 (10...Ng4!? 11.Bg7 Qh4 12.Bg4 Rg8 13.Bh5 Ke7–/+) 11.Bh5 Kd8 12.Nc3 Qb4 13.Qb3 (13.Bf3 Rb8 14.Rb1 Ne8=) 13...Qb3 14.ab3 c5 15.Nb5?? (15.f3!?–/+) 15...Bg2 (better is 15...Nh5 16.Bg7 Ng7 17.Kf1–+) 16.Bc3 (16.Be2 a6 17.f3–+) 16...Ke7?? (better is 16...a6 17.Na3 Nh5 18.Rh5 Bc3 19.dc3 Rb8–+) 17.Nc7–/+ Rac8 (17...Rab8!? 18.Nb5 Nh5 19.Rh5 Bc3 20.dc3 Bc6 21.Ra7 Bb5 22.cb5 Rb5–/+) 18.Ra7= Ne4?? 19.Bg7+– Rhg8 20.Be5 Ng5 21.Be2 Bf3 22.Rh6 Bc6 23.f4 Ne4 24.Rh7 Kd8 25.d3 Rg1 26.Bf1 Ng3 27.Bf6 1–0. blackiwhite (1700) – sfiduesi (1670), kurnik, 2012. (=1.c4 f5 2.b4 g5)

2.c4 g6 3.Bb2 Nf6 4.Nf3 Bg7 5.d4 0-0 6.g3 (6.e3 d5+=) 6...d6 7.Bg2 Nbd7 8.0-0 Nh5 (8...d5 9.Nbd2=) 9.Nbd2 e5 10.d5 (10.de5 de5 11.e4 a5 12.ba5 Qe7+=) 10...e4 11.Bg7 (11.Nd4 Ne5=) 11...ef3=+ 12.Bf8 fg2 13.Kg2 Qf8 14.e4 Ne5 (14...a5 15.b5 fe4 16.Ne4 Ne5=+) 15.Qb3 (better 15.f4!? Ng4 16.Re1=+) 15...fe4-/+ 16.Ne4 Qf3?? (better 16...Bg4 17.Ng5 Be2-/+) 17.Qf3+- Nf3 18.Kf3 1-0. fedorstar (1735) - janvitek (1730), Rated Classical game, lichess.org, 2014. (=1.c4 f5 2.b4)

2.d4 c5 3.bc5+/– a6 4.Bf4 Nc6 5.Nf3 Nf6 6.e3 e6 7.c4 Nb4 (7...Be7 8.Be2+/–) 8.Qa4 Nd3?? (better is 8...Nc6+–) 9.Bd3 Bd6 10.Bd6 b5 11.cb6 g5 12.c5 g4 13.Ng5 Rg8 14.Ne6 g3 15.Nd8 Kd8 16.hg3 Ng4 17.Qc4 Re8 18.Bc7 Ke7 19.Rh7 Kf8 (20.Qf7#; 19...Kf6 20.Qf7 Kg5 21.Qf5#) +–. Taulien,Hans_Juergen – Bruestl,Sabrina, remoteschach.de, 2003.

2.e3 b5 3.Nf3 Nf6 4.Bb5 e6 5.a3 c6 6.Ba4 d6 7.Bc6 Nc6 8.Qe2 Qd7 9.0-0 h6 10.Nc3 e5 11.d4 e4 12.Nh4 g5 13.Ng6 Rh7 14.Nf8 Kf8 15.d5 Ne7 16.f3 Nfd5 17.Nd5 Nd5 18.fe4 Nc3 19.Qd3 Ne4 20.Qe4 Rb8 21.Qd4 Qa4 22.Qd6 Ke8 23.Qb8 Qc2 24.e4 a6 25.ef5 Qc3 26.Bb2 Rb7 27.Bc3 Rb8 28.Rae1 Kf7 29.f6 Be6 30.Rf2 Rc8 31.Bd2 Rc2 32.Rfe2 Ra2 33.Re6 Rd2 34.Ra6 1–0. erch – gengar, ChessWorld.net, 2005.

2.e3 Nc6 3.Bb2 (3.b5!? Na5 4.Bb2+=) 3...Nb4+= 4.c3 (better is 4.a3 Nc6 5.Nf3+=) 4...Nd3?? (better is 4...Nc6–/+) 5.Bd3+– e5 (5...d6 6.e4 fe4 7.Be4+–) 6.Qa4 Qe7? 7.Ba3 Qf7 8.Bb5 Be7 9.Nf3 1–0. joew – legion, net–chess.com, 2002.

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

2.e3 d6 3.b5 c6 4.Qh5 g6 5.Qd1 Bg7 6.d4 e5 7.c3 ed4 8.cd4 c5 9.Bb2 Ne7 10.Nf3 cd4 (10...Be6 11.Ng5 Bd5 12.Nc3 cd4 13.ed4+=) 11.Nd4 a6 12.Ne6?? (better is 12.Qb3+/–) 12...Qa5–+ 13.Qd2 Qd2 14.Nd2 Bb2 15.Rb1 Be6 16.Rb2 Nd7 17.ba6 ba6 18.Be2 0-0 19.0-0 Rfe8 20.Bf3 Rad8 21.Nb3 Nc5 22.Nd4 Bf7 23.Rb6 (23.h4 Rb8 24.Rd2 Rec8–+) 23...Ba2 24.Ra1 Bc4 25.h3 Rd7 26.Nc6 Red8 (better is 26...g5 27.Rc1 Bb5 28.Rd1–+) 27.Nd8 Rd8 28.Rd1 Kf7 29.Rbd6 Rd6 30.Rd6 a5 31.g4 (31.Rd1 Bb3 32.Ra1 a4–+) 31...a4 32.gf5 (32.Rd4 Bb3 33.Bd1 Nc6–+) 32...a3 33.fg6 hg6 34.Rd4 a2 35.Rd1 Nb3 36.Rd7 (36.Be4–+) 36...a1Q 37.Kg2 Qf1 38.Kg3 Qg1 39.Bg2 Bf1 40.Kf3 Nd2! 41.Rd2 Qg2 42.Kf4 g5 43.Ke5 Qh2 44.Kd4–+ Qd6 45.Kc3 Qc5 46.Kb2 Qb4 47.Kc2 Qc4 48.Kd1 Nf5 49.Rd7 Ke8 50.Rd2 Qb3 51.Ke1 Qb1 52.Rd1 Qc2 53.Rd2 Qc3 (better is 53...Qc1 54.Rd1 Qc4–+) 54.Kf1 Qd2 55.Kg2 Nh6 56.Kg3 Qe2 57.Kg2 Nf5 58.h4 Qg4 59.Kf1 Qf3 60.hg5 Ng3 61.Ke1 Ne4 0–1. MasterofDisaster – SeriousTrouble, Live Game Caissa's Web, 2004.

2.e4 e5 3.ef5 Nf6 4.g4 (4.Nf3 e4 5.Nd4 Nc6=) 4...h6 (4...Bb4 5.Nc3 d5 6.g5 Bc3 7.dc3+=) 5.a3 (5.Nf3 Ng4 6.Nc3 d6=) 5...a5 6.b5 Bc5 7.Bb2 Ne4 (7...h5 8.Qe2 d5 9.g5+= (9.Qe5 Kf7 10.Ne2 Re8=)) 8.Nh3 d5 9.Nc3 (9.d3!? Nf6 10.Nc3+=) 9...Nc3+= 10.Bc3 d4 11.Bb2 Qd5 (11...h5!?=) 12.Rg1+/- Bd6 (12...0-0 13.Qe2+/-) 13.Qe2 Nd7 (better is 13...0-0!? 14.g5 Kh8 15.gh6 gh6+-) 14.Nf4+- Qf7? (14...d3 15.Nd5 de2 16.Be2+-) 15.Bg2 (15.Ng6 Rg8 16.Bd4 Kd8+-) 15...Nf6 (15...h5 16.Bd5 Qf6 17.Nh5 Qe7+-) 16.Ne6! Be6 17.fe6 Qe6 18.Bb7 Rb8 19.Bc6 Ke7 20.f4! ef4 21.Qe6 (21.Bd4 Rbd8+-) 21...Ke6+/- 22.Kf1 (22.Bd4 Be5 23.Be5 Ke5+/-) 22...g5 (22...Bc5!? 23.g5 hg5 24.Rg5 Bb6 25.Re1 Kf7+/-) 23.Bd4 h5 1-0. Burns,Chris - Post,Martin, NZL Wanganui Chess Club Rapid, 2002.

2.e4 Nf6 3.e5+= Nd5 4.Nc3 Nc3 5.dc3 d6 6.Nf3 Nc6 7.Bf4 h6 (7...e6!?+=) 8.b5 Na5 9.Nh4 g5?? (better is 9...Be6 10.Ng6 Rg8+/–) 10.Qh5+– Kd7 11.e6! Ke6 12.Bd3 Kd7 (12...Rg8 13.Nf5 c6+– (13...gf4?? 14.Ng7 Kf6 15.Qh6 Ke5 16.Qg5 Bf5 17.Qf5#)) 13.Bf5 e6 14.Be6 Ke6 15.0-0-0 Bg7 (15...Rg8 16.Rhe1 Kf6 17.Be5 de5 18.Rd8 Nc4 19.Rf8 Rf8 20.Qh6 Kf7 21.Qg6 Ke7 22.Qg5 Kf7 23.Qg6 Ke7+–) 16.Rhe1 Be5 17.Be5 de5 18.Rd8 Rd8 19.Qg6 Kd5 20.Qd3 Kc5 (20...Ke6 21.Qf5 Kd5 22.Qe5 Kc4 23.Re4 Rd4 24.Rd4 Kc3 25.Qe3#) 21.Re5 Kb6 22.Qe3 c5 (22...Rd4 23.Qd4 c5 24.Qc5#) 1–0. pierre (2095) – mkhmaaref, internet, 2012.

2.Nf3 b6 3.Bb2 e6 4.g3 Nf6 (4...Bb4?? 5.Bg7 Nf6 6.Bh8+–; 4...Bb7 5.b5 Nf6 6.Nc3 a6 7.a4 Bc5 8.Bg2 Ne4 9.0-0 0-0; 4...Na6 5.b5 Nc5 6.Nc3 Nf6 7.Bg2 Bb7 8.0-0 Bd6 9.d4 Nce4) 5.a3 (5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bb7 9.Nc3 Bd6) 5...a5 (5...Bb7 6.Bg2 Nc6 7.0-0 Bd6 8.Nc3 0-0 9.d4 a5) 6.b5 Bb7 7.Bg2 (7.Nc3 Bd6 8.Bg2 0-0 9.0-0 Qe8) 7...Be7 (7...Bd6 8.Nc3 0-0 9.0-0 Qe8) 8.0-0 (8.Nc3 0-0 9.0-0 d5) 8...0-0 9.c4 (9.Nc3 d5) 9...Qe8 (9...d5=) 10.Nc3 Qh5 11.e3 Ng4 12.h3 Nh6 13.d4 d6 14.Ne1 Qd1 15.Rd1 Bg2 16.Ng2 Nd7 17.Nf4 Kf7 18.d5 e5 19.Ne6 Rfc8 20.e4 Nf8 21.ef5 Nf5 22.g4 Nh4 23.f4 ef4 24.Rf4 Kg8 25.Rdf1 Bf6 26.Rf6 gf6 27.Ne4 Nd7 28.Bf6 Nf6 29.Nf6 Kh8 30.Ne4 Ng6? 31.Rf7+– Ne5 32.Re7 Re8 33.Rc7 Rac8 34.Rc8 Rc8 35.Nd6 Rc4 36.Nc4 Nc4 37.Kf2 Kg8 38.Ke2 Kf7 39.Kd3 Ne5? 40.Kd4 Nf3 41.Kc4 Nd2 42.Kd3 (42.Kd3 Nf3 43.Ke3+–) 1–0. Mareco,S (2470) – Reinoso,C (2150), 3rd Cup, Berazategui ARG, 2008. (=1.Nf3 f5 2.b4)

2.Nf3 g5 3.Bb2+/– h6?? (better is 3...Nf6 4.Ng5 e6+/–) 4.Bh8+– d5 5.Ne5 b6 (5...Nf6+–) 6.e4! d4 (6...fe4 7.Qh5) 7.Qh5# 1–0. Taulien,Hans_Juergen – Bruestl,Sabrina, remoteschach.de, 2003.

2.f4 e5 3.fe5 Bb4 4.Bb2 Nh6 5.c3 Ba5 6.d4 d6 7.ed6 cd6 8.Qa4 Bd7 9.Qd1 Ng4 10.h3?? (better is 10.Nf3–/+) 10...Qh4–+ 11.Kd2 Nf2 12.Qe1 (12.Qb3 Qd4 13.Kc1 Qe3 14.Nd2 Nh1 15.Ngf3–+) 12...Ne4 13.Kc1 Qe1 (14.Kc2 Ba4 15.Kd3 Nf2 16.Ke3 0-0 17.g3 Re8 18.Kf4 Nd3 19.Kf5 Qg3 20.ed3 Bd7) 0–1. pascals1975 – JanP (2505), ChessWorld.net, 2003.

2.g3 e6 3.Bg2 (3.a3 a5=) 3...Nf6 (3...Bb4!? 4.a3 Be7–/+) 4.a3= Nc6 5.Bb2 d6 6.d3 Be7 7.Nd2 0-0 8.Ngf3 Ng4 9.0-0 Bf6 10.d4 Qe8 11.c4 Qh5 12.e3 Bd7 13.h3 Nh6 14.Nh2 Rab8?? (better is 14...Qg6+=) 15.Qh5+– Be8 16.Qe2 Ne7 17.f4 g5 (17...Bc6 18.Nhf3+–) 18.Ndf3 g4 19.hg4 fg4 20.Nd2 (20.Ng5!? Nef5 21.Ng4 Ng4 22.Qg4 Bg6+–) 20...Bh5 21.Ne4 Nef5 22.Nf6 Rf6 23.Qf2 Rbf8 24.d5 e5 25.e4 Nd4 26.Bd4 ed4 27.Qd4 b6 28.f5 Nf7 29.Qe3 Ne5 30.Qg5 Bg6 31.Ng4 Ng4 32.Qg4 R8f7 33.fg6 Rg6 34.Qc8 Kg7 35.Rf7 Kf7 36.Rf1 Kg7 37.Qd7 Kh6 38.Qh3 Kg7 39.Qd7 Kh6 40.Rf7 a5 41.Rh7 Kg5 42.Rg7 ab4 43.Rg6 Kg6 44.ab4 Kf6 45.Bh3 b5 46.Qe6 Kg7 47.cb5 c6 48.Bf5 cb5 49.Qg6 Kf8 50.Be6 Ke7 51.Qf7 Kd8 52.Qd7# 1–0. sagonek – jantchinger, kurnik, 2012.

2.g3 g5 3.e3 e6 (better is 3...Nf6=) 4.Qh5+– Ke7 5.Bb2 Nf6 6.Qg5 Rg8?? (better is 6...Kf7+–) 7.Qf6 (better is 7.Bf6 Kf7 8.Bd8 Rg5 9.Bg5 Bb4 10.Nf3+–) 7...Ke8 8.Qe5 (better is 8.Qd8 Kd8 9.a3 Bg7 10.Bg7 Rg7+–) 8...Bg7 9.Qf4?? (better is 9.Qg7 Rg7 10.Bg7+–) 9...Bb2–+ 10.Qh6 Rg7 (10...Ba1 11.Qh7 Rg4 12.Qh5 Ke7 13.d4–+) 11.Qh5?? Kf8–+ 12.Na3 Ba1 13.Be2 b6 14.Nh3 Bb7 15.f3 Bb2 16.Nc4 Bf6 17.g4 fg4 18.fg4 Bh1 19.g5 Be5 20.Ne5 a5 21.Nf4 Ke7 22.g6 Qh8 23.Qg5= Ke8 24.Qf6?? Rg8 25.Qf7?? Kd8–+ 26.g7 Rg7 27.Qf6 Kc8 28.Ne6 Rg1 29.Bf1 Qf6 30.Nf4 Qe5 31.d4 Qe3 32.Kd1 Rf1# 0–1. wonderhorse – bsjostedt, net–chess.com, 2005.

2.h3 e5 3.Bb2=.

2.h3 f4 3.g3 (better is 3.d4+=) 3...fg3–/+ 4.fg3 e5 (4...e6 5.e4–/+) 5.c3 (5.a3 Qg5 6.Kf2 a5+=) 5...Nf6 (5...Qg5 6.Kf2+=) 6.d4 (6.d3 d5+=) 6...ed4 (better is 6...Bd6–/+) 7.cd4? (better is 7.Qd4!? d5 8.Bg2–/+) 7...Bb4–+ 8.Kf2 (8.Bd2 Bd6 9.Bf4 Bf4 10.gf4 Nd5–+) 8...0-0 9.Bb2?? Ng4 10.Kg2 Ne3 11.Kh2 Rf2 12.Bg2 Rg2 0–1. katanjake – retard, internet, 2007.

2.h3 Nf6 3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.h3).

2.Nh3 Nf6 3.e3 e6 (3...e5 4.Bb2 d6=) 4.d4 (better is 4.a3!?=) 4...Bb4–/+ 5.Bd2 Nc6 6.a3 (6.Bb4 Nb4 7.a3 Nc6=+) 6...Bd6 7.Bc3 Ne4 8.Bd3 Qh4 9.0-0 b6 10.Be4 fe4 11.Be1 (11.d5 Ne5 12.de6 de6 13.Be5 Be5–/+) 11...Ba6 12.Nd2? (better is 12.f4 Qf6 13.Rf2–/+) 12...Bf1–+ 13.Kf1 0-0 (13...Bh2 14.f4 Qd8 15.g3–+) 14.f3 Rf6 15.Bh4+– Rh6 16.Qe1 Rf8 17.Bg5 Rg6 18.Ne4 h6 19.Bf4 e5 20.de5 Be5 21.Rd1 d6 22.Be5 Ne5 23.Nf4 Rf4 24.ef4 Nc4 25.Qc3 b5 26.f5 (26...Rg2 27.Kg2+–) 1–0. kong – goffy, ChessWorld.net, 2005.

3.Bb2 (---> 1.b4 f5 2.Bb2 e6 3.a3).

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

3.d4 b5 4.Nd2 Nd7 (4...ba4 5.Ngf3+=) 5.Nb3 (5.ab5 e5 6.de5 Bb4+/–) 5...Nb6 (5...ba4 6.Ra4 e5 7.Bd2=) 6.f4?? (6.ab5 e5 7.Nc5 Bd7+/–) 6...c5?? (6...e5 7.Nc5 Na4 8.fe5+=) 7.h4?? (7.dc5 ba4 8.Na5 e6+/–) 7...Bd7 8.e4 Bc6?? 9.Bd2 Qd6?? 10.c4 a5?? 11.Bc3 e5?? 12.Be2?? Ke7?? 13.g4 Ke6?? 14.Bf3 Ne7?? 15.Ra3 g5?? 16.Ne2 Bg7?? 17.Ng3 Ng6?? 18.Rh3 Ra6?? 19.Qd3 Bf6?? 20.Ke2 h5 21.Ke3 Rh6 (21...cd4 22.Kf2 dc4 23.ef5 Kd7 24.Nc5 Qc5 25.bc5 cd3 26.Bc6 Kc6 27.fg6 hg4 28.ab5 Kb5 29.hg5 Rh3 30.Ra5 Ra5 31.Ba5 Ka5 32.cb6 Rh2 33.Kg1–+; worse is 21...Nc4 22.Kf2 fe4 23.f5 Kd7 24.Nc5 Ke8 25.Qf1–+) ½–½. Barholz,Svenja – Czudaj,Jessica, Schleswig Holstein–ch U16 Girls, 2001.

3.d4 Nc6 4.b5 Na5 5.e3 e6 6.Bd2 Nc4 7.Bc4 dc4 8.Qe2 Qd5 9.Nf3 h6 10.Nc3 Qd6 11.Qc4 Nf6 12.Ne5 g5 13.h3 b6 14.Qc6 Nd7 15.Qa8 Bg7 16.Qc8 Ke7 17.Ng6 Kf6 18.Nh8 h5 19.Qd8 Qe7 20.Qe7 Ke7 21.Ng6 Kd8 22.e4 Bd4 23.ef5 ef5 24.Bg5 Ke8 25.Ra3 Nc5 26.Nd5 Bb2 27.Re3 Kd7 28.Nf8 Kd6 29.c4 Na4 30.Be7 Black king mated 1–0. themuttsknutts (1620) – rlonsdale (1625), ChessWorld.net, 2015.

3.d4 e5!?+=.

3.Bb2 Nc6 4.b5+= Na5 (4...Nce7 5.Be5 Ng6 6.Bd4+/–) 5.Bc3 (5.Be5 Nf6+/–) 5...b6 (5...c5 6.Be5 d6 7.Bc3+/–) 6.Be5+/– d5 7.e3 Qe7 (7...Nf6 8.Nc3+/–) 8.Nf3 Nf6 9.Be2 Ng4 (9...Be6 10.0-0+–) 10.Bc3 (10.Bf4 Nf6+–) 10...Nc4 (10...a6 11.Nd4+/–) 11.d3 (11.Nd4 Nf6+–) 11...Nd6 12.0-0 (12.Nd4 Nf6+/–) 12...h5 (12...a6 13.Na3+/–) 13.h3+– Bb7 (better is 13...Nf6+–) 14.hg4 (14.Bd4 a6+–) 14...hg4 15.Nh2 Qh4 (15...Nb5 16.ab5 Qh4 17.Be5=) 16.Be5 0-0-0 (16...Ne4 17.Bg4 fg4 18.Qg4 (18.de4?! Bd6 19.Qg4 Qh2 20.Bh2 Bh2 21.Kh1 Be5 22.Kg1 Bh2 23.Kh1 Be5 24.Kg1 Bh2=) 18...Qg4 19.Ng4+–) 17.a5 (17.Na3 Nf7 18.Bg3 Qh6 19.Bg4 fg4+/–) 17...Nf7 (17...Nb5 18.Bg3 Qh6 19.ab6 Bd6 20.Bg4 fg4 21.Qg4 Rd7+=) 18.Bg3 Qh5 (18...Qh6 19.ab6 Bd6 20.Bg4 fg4 21.Qg4 Rd7 22.f4 (22.ba7?! Qh2 23.Bh2 Bh2 24.Kh1 Be5 25.Kg1 Bh2 26.Kh1 Be5 27.Kg1 Bh2=) 22...ab6 23.Ra7+–) 19.ab6 cb6 (19...Bd6 20.f4 (20.Ra7?! Bg3 21.fg3 Qh2 22.Kf2 d4=) 20...gf3 21.Bf3+– (21.Rf3?! Bg3 22.Rg3 Qh2 23.Kf2 ab6=+; 21.Nf3?? Bg3 22.Nh4 Qh4 23.ba7 Qh2; 21.ba7 Bg3 22.a8Q Kd7 23.Qd8 Nd8 24.Rf3 Qh2 25.Kf1 Qh1)) 20.Ra7 (20.Qd2!? Bd6 21.f4 Kb8+–) 20...Bd6 21.f4 (21.Bg4!? fg4 22.Qg4 Kb8 23.Qh5 Rh5+–) 21...gf3 22.Bf3 Bg3?? (better is 22...Qg6 23.Bd6 Qd6+–) 23.Bh5 Bh2 (23...g6 24.Bg6 Bh2 25.Kf2+–) 24.Kh2 g6 25.g4 fg4 (25...Kb8 26.Ra4 Nd6+–) 26.Qg4 Kb8 (26...Rd7 27.Rf7 Rh5 28.Kg3 Rf5 29.Rd7 d4 30.Qg6 Rf3 31.Kg4 Rg3 32.Kg3 Kd7 33.Rb7 Kc8 34.Qc6 Kd8 35.Qd7) 27.Rb7! Kb7 (27...Ka8 28.Ra7! Kb8 29.Rff7 Rd7 30.Rad7 Rh5 31.Qh5 gh5 32.Rf8) 28.Rf7 Kb8 29.Qf4 Ka8 (29...Rd6 30.Qd6 Ka8 31.Qd5 Kb8 32.Qb7) 30.Qa4 (30...Kb8 31.Qa7 Kc8 32.Qc7) 1–0. NN – NN, 2002.

3.Bb2 Qf6 4.Nf3 d6 5.Nc3 Be6 6.d4 e4 7.d5 Bd7 8.Nd4 Ne7 9.e3 f4 10.Qh5 g6 11.Ne4 Qf7 12.Qd1 fe3 13.Nb5 ef2 14.Nf2 Rg8 15.Nc7 Kd8 16.Na8 Nd5 17.Bc4 Be6 18.Bd5 Bd5 19.0-0 Qf5 20.Ng4 Qe4 21.Qd2 Bh6 22.Nh6 Re8 23.Rad1 Bc6 24.Qd6 Nd7 25.Nf7 Kc8 26.Qc7 1–0. b4_player (2245) – towinin20 (1780), GameColony.com, 2003.

3.Bb2 Nf6!?=+.

3.Bb2 d6 4.c4 ab5 5.cb5 e5 6.e3 Be6 7.Qh5 g6 8.Qf3 Nf6 (8...Ba2? 9.Nc3 (9.Qb7?! Nd7=) 9...Nd7 10.Na2+-; 8...Ra2?! 9.Ra2 Ba2 10.Nc3=) 9.Qb7?? (better is 9.Nc3 d5 10.d4=+) 9...Nbd7 (better is 9...Bd5 10.Qa8 Ba8-+) 10.Qc6 (10.Nc3 Nc5 11.Qc6 Bd7+=) 10...Be7 (10...Bd5!? 11.Qc2 Ra2 12.Ra2 Ba2=) 11.Bc4 Bc4 12.Qc4 d5 Black prepares the advance e4 13.Qc2 0-0 14.Nf3 Bd6 15.0-0 e4 16.Ng5 (16.Nd4 Qb8+/-) 16...Qe7 17.Nc3 Be5 (17...Nc5 18.a4+=) 18.d4 (18.a4 Ra5+/-) 18...Bd6 (18...Bh2 19.Kh2 Ng4 20.Kg1 Qg5 21.Nd5 Qh4+=) 19.Qb3 Nb6 20.a4 Nc4? (better is 20...Ra5+/-) 21.h4?? (better is 21.Nd5 Nd5 22.Qc4 Qg5 23.Qd5 Kg7 24.a5+-) 21...Nd2+= 22.Nd5 (better is 22.Qa2 Nf1 23.Nd5 Nd5 24.Qd5 Kh8 25.Kf1+/-) 22...Kh8?? (better is 22...Nb3 23.Ne7 Be7-/+) 23.Qc2 (better is 23.Ne7 Nb3 24.Ba3 Na1 25.Bd6 (25.Ra1? Ra4 26.Nc6 Ra3 27.Ra3 Ba3-+) 25...cd6 26.Ra1+-) 23...Nf1?? (better is 23...Nd5 24.Qd2 h6+/-) 24.Ne7+- Ne3 (24...Be7 25.Qc7 Ne3 26.fe3+-) 25.fe3 Be7 (25...Rae8 26.Nc6+-) 26.Qc7 Nd5 27.Qe5 (27.Qe5 Bf6 28.Qd5+-) 1-0. Zpytasz (1720) - ive123 (1610), Rated Rapid game, lichess.org, 2020.

3.c4 Nf6 4.Bb2 c6 5.a4 e6 6.Nc3 Bb4 7.Nf3 0-0 8.Ne5 d6 9.Nd3 c5 (9...Bc3 10.Bc3 e5 11.Qb3=+) 10.e3 (10.Nb4 cb4 11.Nb1 b6=) 10...ab5 (10...Bc3 11.Bc3 e5 12.Be2=+) 11.ab5 Ra1 12.Qa1 Qa5 (12...Bc3!? 13.Bc3 e5=) 13.Nb4+= Qa1? (better 13...Qb4!? 14.Be2 Nbd7+=) 14.Ba1+- cb4 15.Na4 (15.Na2 b3 16.Nc1 b6+-) 15...d5 (better 15...Nbd7!?+=) 16.Be5+/- Nbd7 17.Bd6 Re8 18.Bb4 b6 19.f3 (19.c5 bc5 20.Bc5 Bb7+-) 19...Bb7 20.d4 (20.c5 bc5 21.Nc5 Nc5 22.Bc5 Ra8+-) 20...Ra8 21.Nc3 (21.Nb2 Ra2 22.Bc3 Ra1 23.Kd2 dc4 24.Nc4 Ra2 25.Nb2 Bd5+/-) 21...Ra1+= 22.Kf2 Kf7? (better 22...dc4!? 23.Rg1 Bd5+=) 23.Rg1 (23.c5 bc5 24.dc5 Ne5+-) 23...e5 24.g4 (24.c5 ed4 25.ed4 bc5 26.dc5 Ne5+-) 24...ed4 (24...fg4!? 25.fg4 Rc1+/-) 25.ed4+- fg4 26.fg4 Ne4 27.Ne4 de4 28.Bg2 (28.d5 g5+-) 28...Ra4 (28...e3 29.Ke3 Rg1 30.Bb7+/-) 29.Rb1 e3 30.Kg3 (30.Ke3 A deflection 30...Bg2) 30...Bg2 31.Kg2 Ra2 32.Kf3 e2 33.Kf2 e1Q 34.Ke1 Rh2 35.Kd1 (35.Rb3 Rg2+/-) 35...Rg2 36.c5 bc5 (36...Ke8 37.Rc1 bc5 38.dc5 Rg4 39.Be1+/-) 37.dc5+- Rg4 38.c6 Nb6 (38...Nb6 39.Bc5 Nd5+-). poputchik (1725) - batman69 (1685), Rated Classical game, lichess.org, 2014.

3.e3 ab5 4.Bb5 c6 5.Bd3 d6 6.Bb2 e5 7.Nf3? (7.f4 e4 8.Be2 Be6=) 7...Nf6?? (7...e4 8.Bc4 ef3 9.Qf3-+) 8.0-0? (8.Bc4 e4 9.Nd4 d5=+) 8...Be6?? (better is 8...e4-+) 9.Ng5= Bd5 (9...Bd7 10.f4 e4 11.Be2=) 10.c4 (10.Bf5 Bc4 11.d3 Bg8+/-) 10...Be4 (10...Bg8 11.Be2=) 11.Ne4 (11.Be2 Bb1 12.Qb1+=) 11...Ne4 (better is 11...fe4!? 12.Bc2 Be7+=) 12.Be4 (12.f3 Nc5 13.Bf5 g6+/-) 12...fe4 13.Qh5 g6 14.Qg4 Qd7 15.Qe4 Qf5 (15...Bg7 16.f4+/-) 16.f3 (16.Qf5!? gf5 17.f4+/-) 16...Qe4+= 17.fe4 Bg7 18.d4 (18.Nc3 Nd7+/-) 18...Rf8 19.Ba3 (19.Rf8 Kf8 20.Nd2 ed4 21.Bd4 Nd7+=) 19...Rf1 (19...ed4 20.Rf8 Kf8 21.Bd6 Kf7 22.a3=+) 20.Kf1 Kd7 (20...ed4 21.Bb2 Ra4 22.ed4-/+) 21.d5 (21.Bb2 ed4 22.Bd4 Be5=) 21...cd5 (21...Ra4 22.Ke2=+) 22.cd5= Ra4 23.Bb2 Re4 24.Nd2 (24.Ke2 Na6 25.Nd2 Rg4=) 24...Re3=+ 25.Kf2? (better is 25.Nc4!? Re4 26.Rc1 Rf4 27.Ke2=) 25...Rd3-+ 26.Nc4 Rd5 (better is 26...Kc7 27.Rc1 Rd5 28.Be5 Be5 29.Ne5 Nc6 30.Nc6 bc6-+) 27.Nb6=+ Ke6 28.Nd5 Kd5 29.Rd1 Ke6 30.Rc1 (30.Ba3 d5 31.Rb1 Nd7 32.Rb7 e4=+) 30...Kd7 31.Rd1 Nc6 32.Ba3 Bf8 33.Ke3 h5 34.Bb2 (34.Rb1 Kc7-/+) 34...Ke6-/+ 35.Rf1 Ke7 (35...Be7!?-/+) 36.Ke4 Bg7 37.Ba3 Na5?? (37...Ke6 38.Rb1=+) 38.Rd1?? (better is 38.Kd5+-) 38...Nc4-/+ 39.Bb4 Bf8 40.a4 Ke6 41.Rd5 (41.Bc3 Nb6 42.a5 d5 43.Kd3 e4 44.Ke2 Na4-/+) 41...Nb6 42.Rb5 Na4 43.Rb7 d5 (43...Nc5 44.Bc5 d5 45.Kf3 Bc5 46.Ke2-+) 44.Kf3-/+ Bh6 (44...Bb4 45.Rb4 Nc3-/+) 45.Be1? (45.Re7 Kf6 46.Rd7 e4 47.Ke2=) 45...e4-+ 46.Ke2 Nc3?? (46...d4 47.Rb4 d3 48.Kf1-+) 47.Kf2 (better is 47.Bc3 Bf4 48.Rb6 Kd7 49.Rg6 Bh2 50.Rh6+-) 47...Nd1 (47...d4 48.Rb6 Kf5 49.Bc3 dc3 50.Rc6-+) 48.Ke2 Ne3 49.h3? (49.Bd2 d4 50.Rb6 Kf7 51.Rb7 Kf8 52.h3=) 49...Ng2-+ 50.Rb6 Kf5 51.Rb5 Ke5 (better is 51...Nf4 52.Kf1 e3-+ (worse is 52...Nh3 53.Rd5 Kg4 54.Rd6-+)) 52.Rb8?? (52.Bc3 Kd6 53.Kf1-+) 52...Nf4 53.Kf1 Nh3 54.Re8 Kd4 55.Rg8 (55.Ra8 Nf4-+) 55...Nf4 56.Rh8 Bg5 57.Ra8 Ke5 (57...e3 58.Ra4 Kd3 59.Bg3-+) 58.Bg3 Kf5 59.Rf8 (59.Ra5-+) 59...Ke5 (59...Kg4 60.Bf4 Bf4 61.Rd8-+) 60.Re8?? (60.Ra8 h4 61.Bh2-+) 60...Kd4-+ 61.Rf8 (61.Bf2 Kd3-+) 61...Ne6 (better is 61...Ke3!? 62.Bf2 Kf3 63.Re8-+) 62.Rg8 e3 (better is 62...Bf4 63.Rg6 Bg3 64.Rg3-+) 63.Rg6 Nc5 (better is 63...Bf4 64.Bh4 Nc5-+) 64.Rg5+= Nd3? (better is 64...Ne4!? 65.Be5 Kd3 66.Rh5 d4+=) 65.Ke2 Nc1? (65...Ke4 66.Rh5 Nc1 67.Kd1+-) 66.Kd1 (better is 66.Kf3+-) 66...Nd3 67.Rh5 (67.Rh5 Kc4 68.Rh8+-) 1-0. Zpytasz (1715) - chessakhavan132, Rated Rapid game, lichess.org, 2017.

3.e3 ab5 4.Bb5 c6 5.Be2 g6 (5...e5 6.Bb2 d6 7.f4=) 6.Bb2 Nf6 7.Nf3 d6 8.c4 e5 9.d4 e4 10.Nfd2 d5 11.0-0 Bg7 12.cd5 (12.Nc3 0-0+=) 12...cd5 13.f4 (13.Ba3 Nc6=) 13...0-0= 14.Ba3 Rf7 15.Nb3 (15.Qb3 b6=) 15...b6=+ 16.Bb2 Ba6 17.Ba6 Na6 18.a4 Nb4 19.Nc3 Nd3 20.Ba3 (20.Qd2 Rc7 21.Nc1 Nb2 22.Qb2 Ng4=+) 20...Bf8 (20...Rc7!? 21.Nb5 Rc4-/+) 21.Bf8=+ Qf8 22.Nc1 Nb2 23.Qb3 Nc4 24.Qb5? (better is 24.Re1=+) 24...Ne3-+ 25.Re1 (better is 25.Rf2 Qd6 26.h3-+) 25...Nc2 26.N1e2 Ne1 27.Re1 Qd8 28.Qc6 (28.Rb1 Rb7-+) 28...Ng4 (28...Rd7 29.Qb5-+) 29.Nd5? (better is 29.Rb1-+) 29...Rf8 (29...Qh4!? 30.Rb1 Qh2 31.Kf1-+) 30.Nb6?? (better is 30.h3 Ra5 31.Nb6-/+) 30...Qh4-+ 31.Qe6 (31.Qc3 Qf2 32.Kh1-+) 31...Rf7 32.Na8 (32.Ra1 Qh2 33.Kf1-+) 32…Qe1 0-1. Zpytasz (1750) - nurliz (1680), Rated Rapid game, lichess.org, 2016.

3.Bb2 e6 4.Nf3 c6 5.e3 Nf6 6.a4 Bd6 7.c4 0-0 8.cd5 cd5 9.Ne5 (9.d4 Ne4=) 9...Bd7 (9...Nbd7!? 10.Nd7 Bd7=+) 10.Be2= Bc8 11.0-0 Nbd7 12.Nf3 (12.f4 Qc7 13.Qc1 Qc1 14.Rc1 Be5 15.Be5 Ne5 16.fe5 Ng4 17.Bg4 fg4+=) 12...Kh8 (12...e5 13.Qc2=) 13.Ng5 (better is 13.d4+=) 13...Ne4?? (better is 13...Qe7=) 14.Ne6 Qh4 15.g3 (15.Bg7 Kg8 16.g3 Ng3 17.hg3 Bg3=) 15...Qh3? (15...Ng3 16.hg3 (16.fg3?! Bg3 17.Bg7 Kg8 18.hg3 Qg3 19.Kh1 Qh3 20.Kg1 Qg3 21.Kh1 Qh3 22.Kg1 Qg3=; 16.Bg7 Kg8 17.hg3 Bg3=) 16...Bg3 17.Kg2 Qh2 18.Kf3=) 16.Nf8 (16.Bg7 Kg8 17.Bf8 Nf8+-) 16...Nf8? (better is 16...Ng3 17.f4 Nf8+-) 17.Bf3 Ng6 (17...Be6 18.d3 Ng5 19.Bg2+-) 18.Bg2 Qh6 19.f4 (better is 19.d3 Nc5 20.Bd5+-) 19...Ng3 (19...Ne7+-) 20.hg3 d4 (20...Be6 21.Bd4+-) 21.Bd4 Be6 (21...Nf8 22.Qf3+-) 22.Bb7 Rg8 (22...Rd8 23.Rf2 Ne7 24.Rh2+-) 23.Bg2 (23.Ba7 Ne7+-) 23...Ne7 24.Nc3 (24.Ba7 Qg6+-) 24...Bc4 (24...Nc8 25.a5+-) 25.Re1 (25.d3 Bf7 26.Ba7 Bb4+-) 25...Bb4 (25...Nc8 26.e4+-) 26.Kf2 (better is 26.Ba7 Qg6 27.Kf2+-) 26...Qh2 (26...Rd8+-) 27.Rh1 Qg2 28.Kg2 Nd5 29.Qh5 (29.Qh5 Nf6 30.Bf6 Bf1 31.Raf1 Bc3 32.Qh7; 29.Rh7 Kh7 30.Qh5) 1-0. Zpytasz (1780) - mert190706, Rated Rapid game, lichess.org, 2017.

3.e3 c6 4.c4 cb5 5.cb5 a6 (5...e5 6.Bb2 Nd7 7.Qf3=) 6.Nc3 ab5 7.Nb5 Nf6 8.Bb2 Ra5 (8...Nc6 9.Nf3=) 9.Bc3 (better is 9.Be5 Na6 10.Bc3+/-) 9...Rb5? (better is 9...Ra8+=) 10.Bb5+- Bd7 11.a4 (11.Qb3 Bc6+-) 11...Ne4 12.Be5 Na6 (12...Nc6 13.Nf3+-) 13.Qh5 g6 14.Qe2 Rg8 15.Nf3 e6 16.0-0 Nb4 17.Nd4 h5 (17...Kf7 18.Rfc1 Nd6 19.f4+-) 18.Ne6 Qh4 (18...Qe7 19.Nf8 Rf8+-) 19.Bd7 Ke7 (19...Kd7 20.Nf8 Ke8 21.Qb5 Nc6+-) 20.Qb5 Nc2 21.Rac1 (21.Bc8 Nf6 22.Qb7 Ke8 23.Bf6 Qh2 24.Kh2 Bd6 25.Kh1 Bc7 26.Nc7 Kf8 27.Ne6 Ke8 28.Qd7) 21...Nd2 22.Rfd1 (22.Bc8 Nf3 23.gf3 Kf7 24.Qd5 Qg4 25.fg4 Be7 26.Ng5 Ke8 27.Bd7 Kd8 28.Ne6) 22...Ne4 23.Rc2 Qf2 24.Rf2 Nf2 25.Kf2 (25.Qc5 Kd7 26.Qd5 Bd6 27.Qd6 Ke8 28.Qd7) 25...Bg7 (25...Bh6 26.Qc5 Kf7 27.Nf4 Bg5 28.Be6 Ke8 29.Qc8 Bd8 30.Qd7 Kf8 31.Qd8) 26.Qd5 (26.Qc5 Kd7 27.Qd5 Ke7 28.Qd7) 26...Be5 (26...Bf6 27.Be8! Be5 28.Qd7 Kf6 29.Qf7) 27.Qc5 (27.Qe5 Kf7 28.Ng5 Kf8 29.Qf6) 27...Kf6+- 28.Rd5 Rd8 29.Nd8 Bb8 (29...Bg3 30.Kf3 Be5 31.Qf8 Kg5 32.Ne6 Kh4 33.Qb4 Bd4 34.Qe1) 30.Qb6 (30.Qd4 Be5 31.Qe5 Kg5 32.Ne6 Kg4 33.Qf4) 30...Kg5 (30...Kg7 31.Qd4 Kh7 32.Ne6 Be5 33.Qe5 h4 34.Qg7) 31.Nf7 Kg4 (31...Kh4 32.Rd4 Bf4 33.Rf4) 32.Rd4 Bf4 33.Qg6 (33.Rf4) 33...Kh4 34.g3 (34.Rf4) 34...Kh3 35.Qh5 1-0. Zpytasz (1760) – NapilChess, Rated Rapid game, lichess.org, 2016.

3.Bb2 Nf6 4.Nf3 Bg7 5.e3 b6 6.a4 Bb7 7.h4 (7.Bc4 c5=) 7...Nh5 (7...a6 8.Bc4=) 8.Bg7 Ng7 9.Nc3 d6 (9...a6 10.a5=) 10.Bc4 e6 11.Ng5 (11.a5 ba5 12.Ra5 c5+=) 11...d5 (11...Bg2 12.Rh2 Be4 13.Nce4 fe4 14.Qg4= (worse is 14.Ne4 d5-/+)) 12.Bb3 (12.Be2 a6=) 12...Nd7 13.Ne2 Nc5 14.Nf4 (14.d4!? Nb3 15.cb3+=) 14...e5=+ 15.Nd3 Nb3 16.cb3 Qe7 (16...h6 17.Nh3 Qe7 18.Qc2=+) 17.0-0 h6 18.Nh3 (18.Nf3 e4 19.Nfe5 Qd6=+) 18...e4 (better is 18...g5!? 19.f3 e4-/+) 19.Ndf4= Qf7 (19...Qh4? 20.Ng6 Qf6 21.Nh8+-) 20.d4 0-0-0 (20...0-0 21.b4+=) 21.a5+= Kb8 22.ab6 (22.Qc2 Qf6+=) 22...cb6 23.b4 Ne6?? (better is 23...Rd7+=) 24.Qa4+- Kc7 (24...Bc8 25.Ng6 Qg7 26.Nh8 Rh8+-) 25.Qa7 Ra8 (25...Rd7 26.Ne6 Qe6 27.Rfc1 Kd8 28.Qb8 Ke7 29.Qh8+-) 26.Nd5 (better is 26.Ne6 Qe6 27.Rfc1 Kd6 28.Qb7 Qd7 29.Qb6 Ke7+-) 26...Kd6 27.Qb6 Kd5 28.Ra8 Ra8 (28...Ba8 29.Rc1 g5 30.hg5+-) 29.Rc1 Qe7 (29...Ra1 30.Ra1 g5 31.Rc1+-) 30.Nf4 Nf4 31.Rc5 Qc5 32.Qc5 Ke6 33.ef4 (better is 33.Qb6 Kd5 34.Qb7 Kc4 35.Qa8 Ne2 36.Kf1 Nd4+-) 33...Ra1 34.Kh2 Bd5 (34...Ba8 35.Qc8 Kf7 36.d5+-) 35.Qc8 Kf7 36.Qd7 Kf6 37.Qd5 (37.Qd5 e3 38.fe3+-) 1-0. chessbit (1700) - Jens_Ole (1760), Rated Blitz game, lichess.org, 2019.

3.Bb2 Nf6 4.Nf3 Bg7 5.e3 e5 6.Ne5+/- 0-0 7.Bc4 d5 8.Bb3 c5 9.0-0 (better is 9.bc6!? Nc6 10.Nd3+/-) 9...c4= 10.Ba4 Bd7 (10...Qa5!? 11.c3 Re8=) 11.Nd7 (11.Nc3 Qa5+/-) 11...Qd7 12.Ba3 Re8 13.c3 a6 14.ba6 Qc7?? (better is 14...b5 15.Bc2 Ra6+=) 15.Be8+- Ng4 (15...Ne8 16.ab7 Qb7+-) 16.g3 Na6 17.Bb5 Nb8 (17...Qb6 18.Ba6 Qa6+-) 18.Bc5! Qc5 19.Ba4 (better is 19.a4+-) 19...d4?? (better is 19...Qb6 20.d4 Bh6+-) 20.cd4+- Bd4 (20...Qb6 21.Nc3 Nc6 22.Rb1+-) 21.ed4 Qd4 22.Nc3 Na6 23.Qe2 (23.Ne2 Qd6+-) 23...Nb4 (23...Ne5 24.Rfe1 Nd3 25.Qe6 Kh8 26.Qe3+-) 24.Bd1 (24.Rab1!? Nd3+-) 24...Nd3 25.Qe6 Kg7 26.Bg4 fg4 27.Qe7 (27.Rab1 Kh6+-) 27...Kh6 (27...Kh8 28.Rab1 b6 29.Qe3+-) 28.Qe3 (28.Rab1!? b6+-) 28...Qe3 29.fe3 Rd8 30.Rab1 Nc5 (30...Ne5 31.Rfd1 Nf3 32.Kg2 Nd2 33.Rb4+-) 31.Rfd1 (better is 31.Rf4 Rd2 32.Rg4 Rd7+-) 31...Kg5 (31...Rd7 32.Rb5 Nd3 33.a4+-) 32.Rb5 Rc8 (32...b6 33.Na4 Rd5 34.Nb6+-) 33.Ne4 Kf5 (33...Kh6 34.Rc5 Rc5 35.Nc5+-) 34.Nc5 (better is 34.Nd6 Ke6 35.Nc8 Nd3+-) 34...Rc5 (34...Ra8 35.Rf1 Ke5 36.a4+-) 35.Rc5 Ke4 36.Rc4 Kf3 37.Rf1 (37.Re1 g5 38.e4 b5 39.Re3) 37...Ke2+- 38.d4 b5 39.Rb4 Ke3 40.d5 Ke2 (40...Kd2 41.Rb3 Kc2 42.Rf2 Kc1 43.Re3 Kd1 44.Kf1 b4 45.Re1) 41.d6 (41.Rb3 Kd2 42.Rf2 Kc1 43.Re3 Kd1 44.Kf1 b4 45.Re1) 41...h5 (41...Kd2 42.Rb3 Kc2 43.d7 b4 44.d8Q h6 45.Qd3) 42.d7 (42.d7 Kd3 43.d8Q Ke3 44.Re1 Kf3 45.Qf6) 1-0. Zpytasz (1710) - Smoke17, Rated Rapid game, lichess.org, 2017.

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.Nc3).

3.d3 e6=+ 4.a3 Be7 5.Bb2 0-0 6.e3 c5 7.bc5 Nc6 8.d4 d5 (8...Rb8 9.Rb1 Qa5 10.Ba1=) 9.Nf3 (9.cd6 Qd6 10.Nf3 Rd8+/-) 9...b6= 10.Na4 (better is 10.Bb5!? Bb7 11.cb6 ab6 12.Qe2=) 10...bc5-/+ 11.Nc5 Bc5 12.dc5 Qa5 (12...Ne4!?-/+) 13.Qd2=+ Qc5 14.Be2? (14.Qc3 Qc3 15.Bc3 Ne4=) 14...Rb8 (14...Ne4 15.Bd4 Nd4 16.Qd4 Qc2 17.Qd3-+) 15.c3? (better is 15.Bf6!? Rf6 16.0-0=+) 15...Na5 (15...Ne4 16.Qc2 f4 17.Bc1-+) 16.a4 (better is 16.Qc2!?-/+) 16...Nb3-+ 17.Ba3 Qa3 (better is 17...Qc7!? 18.Qb2 Na1 19.Qa1 Re8-+) 18.Ra3-/+ Nd2 19.Nd2 Ne4 20.Ne4 Rb1 21.Bd1 fe4 22.0-0 Ba6 (22...Ba6 23.Be2 Rb6 24.Ba6 Ra6=+) 0-1. Darkseid (1745) – marbalizer, ChessWorld.net, 2005.

3.d4 e6 4.Bg5 (4.a3 Be7=) 4...Be7 (4...Bb4 5.Qd3–/+) 5.Nf3 (5.Rb1 0-0=) 5...h6 (5...Bb4 6.Qd3–/+) 6.Bd2 (6.Bf6 Bf6 7.e4 0-0=) 6...d5 (6...Bb4!? 7.Rb1 Nc6=+) 7.a3= 0-0 8.e3 Nbd7 9.Bd3 Ne4 10.0-0 Ndf6 (10...a5 11.Na4=) 11.Ne5+= Ng4 (11...Bd7 12.Ne2+=) 12.Ne4 (better is 12.Ng4 Nd2 13.Nh6 (< 13.Qd2 fg4 14.Qe2 a5+=) 13...gh6 14.Qd2+/–) 12...Ne5= 13.de5 fe4 14.Be2 Bh4 (14...c5 15.c4=) 15.c4+= Qg5 16.g3 Qe5 (better is 16...Qg6=) 17.gh4+– Qf6 18.f4 Qh4 (18...d4 19.ed4 Qd4 20.Kg2+/–) 19.Be1 Qh3 20.Bg3 (20.Qd4 Rf6 21.Rf2 Qf5+–) 20...Rf5?? (better is 20...Qf5+–) 21.Bg4 (21...Qf1 22.Kf1+–) 1–0. Whiterose – goffy, ChessWorld.net, 2005.

3.g3 e5-/+ 4.a3 d5 5.Bg2 c6 (5...a5 6.b5=+) 6.d4 Bd6 7.de5 (7.Nf3 e4 8.Ne5 Be5 9.de5 Ng4=+) 7...Be5-/+ 8.Bd2 (8.Bb2 Ne4 9.Qd3 Qb6=+) 8...Ne4 9.Rb1?? (better 9.Ne4 fe4 10.Rb1-/+) 9...Nc3-+ 10.Bc3 Bc3 11.Kf1 Be6 12.Rb3 (12.e3 0-0-+) 12...d4 13.Rb1 Nd7 (13...Ba2!? 14.Rc1-+) 14.Nf3 (14.b5 Ba2 15.Ra1 Bc4 16.bc6 bc6 17.Bc6 Rc8-+) 14...Nf6 (14...Nb6 15.b5-+) 15.b5 (15.Qd3 Qd5-+) 15...0-0 16.bc6 bc6 17.h4 (17.Kg1 Ne4-+) 17...f4! 18.h5 (18.gf4 Qd6 Double attack (18...Qd6 Decoy)) 18...fg3 19.fg3 Ne4 20.h6 Ng3 21.Kg1 Nh1 22.Kh1 Qf6 23.hg7 Qh6 24.Kg1 (24.Nh2 Rf2 25.Kg1 Bd2-+) 24...Rf7 25.Nd4 (25.Qc1 Qg7 26.Qg5 Bf5-+) 25...Qe3 26.Kh1 Bd4 27.Qe1 Qf2 (27...Qh6 28.Qh4 Qh4 29.Bh3 Qh3) 28.Qb4 (28.Qf2 Rf2 29.Rd1-+) 28...Rg7 (28...Qh4 29.Bh3 Qh3) 29.Rg1 (29.Qf8 Rf8 30.Bh3 Rg1 31.Rg1 Qg1) 29...Qh4 (29...Qg1) 30.Bh3 Qh3 0-1. Prozorov - GeorgeWBush (1820), Rated Blitz game, lichess.org, 2013.

3.b5 a6 4.c4 d6 5.a4 Bd7 6.e3 Nf6 7.Bb2 Be7 8.g3 (8.Qf3 c6=) 8...0-0 9.Bg2 ab5 10.cb5 c6 11.Nc3 Qc7 (11...Qb6 12.Nf3=+) 12.Nge2 cb5 13.ab5 Ra1 14.Ba1 Qb6 15.Qb3 d5 16.Nf4 (16.0-0 Rc8=) 16...Rc8 (16...Ne4 17.Bf1=+) 17.0-0= Be8?? (better is 17...Bd6=) 18.Na4?? (18.Bd5 ed5 19.Ncd5 Nd5 20.Nd5+–) 18...Qb5–+ 19.Qb5 Bb5 20.Nb6 Rc2 (20...Rc6 21.Nfd5 ed5 22.Nd5 Nd5 23.Bd5 Kf8 24.Bc6 Bc6–/+) 21.Rb1–/+ Bc4 (21...Kf7 22.Nh3 Ne4 23.Be4 fe4 24.Rb5 Rc1 25.Kg2 Ra1=) 22.Rc1?? (better is 22.Nc4 Rc4 23.Ne6=) 22...Rc1–+ 23.Bf1 Ra1 (better is 23...Rf1 24.Kg2 Ra1 25.Nc4 dc4 26.g4–+) 24.Nc4 dc4 25.Ne6 (25.Kg2 c3 26.Bc4 c2 27.Be6 Kf8–+) 25...c3 26.Kg2 c2 27.Bc4 c1Q 28.Ng5 Qc4 29.Kf3 Qd5 30.Kf4 Bd6 0–1. MasterofDisaster – johmul, Live Game Caissa's Web, 2004.

3.c3 d5 4.h4 Nf6 5.f3? (5.Nf3 a5 6.Qa4 Bd7=+) 5...h6 (5...Bd6 6.e3–+) 6.h5 (6.Nh3–/+) 6...b5 (better 6...Bd6!?–/+) 7.e3= c6 8.a4 a6 (8...Bd6 9.ab5 0-0 10.Kf2=) 9.a5 (9.Ne2!?+=) 9...Bd6=+ 10.Ne2 0-0 11.Kd2 (11.Na3 e5=+) 11...Bd7 (11...Nbd7 12.Kc2–/+) 12.Qe1 Be8 13.Nf4 Bf7 14.Ng6 (14.Bd3 Nbd7–/+) 14...Bg6 (14...Re8 15.Be2–+) 15.hg6–/+ Qc7 (15...Qe8 16.Bd3–/+) 16.Qf2 (better 16.Bd3!?=) 16...Nbd7–/+ 17.g3 Rae8 (17...Bg3 18.Qg2–/+) 18.Kd1 e5 19.e4?? (better 19.Bh3 ed4 20.cd4–/+) 19...fe4–+ 20.Bh6 (20.de5 Ne5 21.Qb6 ef3 22.Qc7 Bc7 23.Bf4–+) 20...gh6 21.Rh6 (21.Qd2 h5 (21...ef3?? 22.Qh6 ed4 23.Qh8) 22.Qh6 Nb8 (22...ef3 23.Rh5 Nh5 24.Qh7) 23.de5 Re5–+) 21...Kg7 (better 21...Ng4! 22.Rh8 Kh8 23.Qg1–+) 22.Qe3 (22.Qd2 ef3 23.Kc2 Rh8–+) 22...ef3 (22...ed4 23.Qg5 ef3 24.Rh4–+) 23.Rh3 (23.Rh4 Kg6 24.Qf3–+) 23...ed4 (23...Ng4 24.Qg1 Kg6 25.Rh4–+) 24.Qf3 (24.Qh6 Kg8 25.Qh8) 24...Re3 25.Qg2 (25.Qf5 Rg3 26.Bd3 dc3 27.Rg3 Bg3 28.Nc3 Ne4–+) 25...Rfe8 (better 25...Ng4 26.Rh4 Nf2 27.Kc2 Rg3 28.Rh7 Kg8 29.Qg3 Bg3 30.Rf7–+) 26.Kc2 d3! 27.Bd3 R3e6 (better 27...Ne5 28.Bf5 Ng6–+) 28.g4? (better 28.Qd2!? Kf8 29.Qg5–/+) 28...Ne5 (better 28...Nf8!? 29.g5 Ne4 30.Nd2–+) 29.g5 Nfg4?? (better 29...Nd3 30.gf6 Kf6 31.Kd3 Bf4–+) 30.Rh7+– Kg8 31.Rc7 0–1. patrick317 – mythosellipseal8, gameknot.com, 2018.

3.c3 Nf6 4.Nd2 Be7 5.e3 0-0 6.a4 b6 7.Ba3 Bb7 8.Ngf3 d6 (8...Ne4 9.Qc2=+) 9.Qb3 Qd7 10.Rd1 (10.Bb5 c6 11.Bd3 c5=) 10...Ne4 (10...a6 11.c4=) 11.Be2 f4 12.Ne4 Be4 13.0-0 fe3 14.fe3 Bf3 (14...a6!?+=) 15.Bf3 Nc6? (15...d5 16.e4 c6 17.ed5 cd5 18.c4+/-) 16.b5?? (better is 16.Bc6 Qc6 17.Qe6 Kh8 18.Qe7+-) 16...Na5+= 17.Qa2 Rab8 (17...d5 18.Be7 Qe7 19.e4+=) 18.c4 (18.e4 Nb7+-) 18...Bg5 19.Bc1 c6 20.bc6 (20.Bd2 Rf6+/-) 20...Nc6+= 21.d5 Ne5 22.de6 Nf3 23.gf3 (23.Rf3!? Qe7 24.Qd2 Rf3 25.gf3 Qe6 26.Qd5 Qd5 27.cd5=) 23...Qe6=+ 24.Qe2 (24.Rd6 Be3 25.Kh1 Qh3=) 24...Rf6 25.f4? (25.Kh1 Rbf8=+) 25...Bh4 (better is 25...Bf4 26.Rf2 Be5 27.Rf6 Bf6-+) 26.e4=+ Qh3?? (26...Re8!? 27.Rd4 Rf7=+) 27.Rd3 (27.f5!? Qb3 28.Qg4 Qc4 29.Qh4+-) 27...Rg6 (27...Qc8!? 28.Rd5 Qc6=) 28.Kh1+= Qd7 (better is 28...Rg3 29.Rg3 Bg3+=) 29.e5?? (29.f5 Rf6 30.Qg4 g5+-) 29...Qa4?? (better is 29...Qc6 30.Rd5 de5=+) 30.ed6?? (better is 30.f5 Qc6 31.Rd5+-) 30...Qc6-/+ 31.Rd5 (31.Qf3 Rd6 32.Rd6 Qd6-/+) 31...Rd6 32.Rfd1 (32.Qf3 Bf6-+) 32...Rd5 (32...Re8!? 33.Qg2 Rde6-+) 33.cd5-/+ Qd7 34.Qe6 Qe6 35.de6 Re8 36.f5 g6 37.fg6 Re6 38.gh7 Kh7 39.Rd7 Re7 40.Re7 (better is 40.Rd5!?-+) 40...Be7 41.Be3 Bd8 (better is 41...a5 42.Kg2 a4-+) 42.Kg2 Kg6 43.Kg3 (43.Kf3 a5 44.Ke4 a4-+) 43...a5 44.Kg4 a4 45.h4 (45.Bc1 Be7 46.Kf3 a3 47.Ba3 Ba3-+) 45...b5 (better is 45...a3 46.h5 Kf7-+) 46.h5 Kg7 47.h6 (47.Bc5 Ba5 48.Bd4 Kh7-+) 47...Kg6 48.Kf3 (48.Bc5 Bf6 (worse is 48...Kh6 49.Kf5-+) 49.Bb4 Bb2-+) 48...Bf6 (better is 48...a3 49.Bd4 Bf6-+) 49.Ke4 (49.Bc5 Bb2 50.Ke4-+) 49…a3 0-1. Aleks (1730) - Murfy1 (1710), Rated Blitz game, lichess.org, 2021. (=1.d4 f5 2.b4)

3.Nf3 Nf6 4.e3 c6 (4...Bg7 5.Bd3=) 5.Bd3 Na6 6.a3 Bg7 7.0-0 0-0 8.Bb2 d5 9.Nbd2 Nc7 10.Qe2 Be6 11.Nb3 Qd6 12.Ne5 b6 13.a4 White prepares the advance b5 13...Rfe8 14.b5 c5 15.dc5 bc5 16.c4 Ne4 17.f4 a6 18.Be4 fe4 19.Nc5 (19.Ba3 dc4 20.Bc5 Qd8+/-) 19...Be5+= 20.Ne6 Bb2 21.Nc7 Qc7 22.Qb2 dc4 23.Qd4 ab5 24.ab5 Ra1 25.Ra1 (worse is 25.Qa1 Rb8=) 25...c3 26.Qd5 Kf8 27.Rc1 Rc8 28.Qe4 Qd7 29.h3 (29.Qd4 Qd4 30.ed4 Rc4+=) 29...Qb5= 30.Qd4 Qb2 31.Rf1 Qb3 32.f5 Ke8 33.fg6 hg6 34.Rd1 Kf7 35.Rf1 Ke8 36.Qh8 Kd7 37.Qd4 Ke8 ½-½. chriscooperden (2150) - marekt (2155), gameknot.com, 2017.

3.Nf3+= Bg7 4.Nc3 Nf6= 5.Bf4 0-0 (5...Ne4 6.Qd3=) 6.e3+= c6 (6...a6 7.Bd3+=) 7.Be2 Na6 (7...d6 8.0-0+=) 8.Ba6 White gets strong initiative 8...ba6 9.0-0 a5 10.b5 Ne4 (10...cb5 11.Nb5 Bb7 12.c4+=) 11.Qd3+/– Nc3 (11...cb5 12.Nb5 d6 13.Rab1+=) 12.Qc3 cb5 (12...Bb7 13.Qb3 e6 14.Bd6+/–) 13.Bc7 Qe8 14.Qb3 Qf7 (14...Kh8 15.Qb5 d6 16.Rfb1+=) 15.Qb5 d6? (better is 15...a6 16.Qa5 Bb7+/–) 16.Ng5+– (16.Ba5?! Be6 17.Ng5 Bc4=; 16.Qa5?! Bb7+=) 16...Qf6 17.Qd5 Kh8 18.Nh7! Kh7 19.Qa8 Ba6 20.Qa7 Bf1 21.Rf1 e5 Black plans f4 22.d5 f4 23.ef4 ef4 24.Ba5 f3 25.g3 Qf5+= Threatening mate... how? 26.Bb4?? Qh3 27.Qg7 Kg7 28.Bc3 Kf7 29.Be5 Qg2 0–1. rekt – TT1, internet, 2001.

3.Nf3 Bg7 4.e3 e6 5.c3 Nf6 6.Bd3 0-0 7.Nbd2 b6 8.a4 a5 9.b5 Bb7 10.0-0 Re8 11.Qc2 d5 12.Ba3 Nbd7 13.c4 e5 14.de5 Ne4 15.Rad1 Ne5 16.Ne5 Be5 17.Be4 de4 18.Nf3 (18.c5 Qf6+/-) 18...Bd6 19.Qb3 Kg7 20.c5 bc5 21.Bb2 Kf8 22.Ne5 Qe7 23.Nc4 Red8 24.Rd2 (24.Qc3 Qf7+/-) 24...Qf7 (better 24...Bh2 25.Kh2 Rd2 26.Nd2 Qd6 27.Kg1 Qd2=) 25.Rfd1+/- Be7 26.Qc3 (26.Rd8!? Rd8 27.Rd8 Bd8 28.Qc3+/-) 26...Rd2+= 27.Rd2 Ke8 28.b6 (28.Qh8 Bf8+=) 28...Ba6 29.Qh8 Bf8 30.Qe5 Be7 31.Rd7! Rc8 (31...Kd7 32.Qc7 Double attack) 32.Rc7 Rd8 33.f4 Bc4 34.b7 (34.b7 Be6 35.Bc3=) 1-0. vladimirmk (2105) - marekt (2165), gameknot.com, 2017.

3.Nf3+= Bg7 4.e3 Nf6+=.

3.a3 d6 4.c4 Nf6 5.Bb2 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.a3 Nf6 5.c4).

3.a3 Be7 4.Bb2 Bf6 5.c4 (5.Nc3 d5=) 5...d5 (5...Ne7!?=) 6.cd5 Qd5 7.Nc3 Qf7 8.Qc2 (8.h4 Ne7 9.Nf3 Nbc6+=) 8...Ne7 (8...Nc6 9.b5 Na5 10.Na4+=) 9.Nb5 Nec6 (9...Na6+=) 10.Nf3 (better 10.Bc4!? Qe7 11.Ne2+–) 10...a6= 11.Nc3 (better 11.Bc4 Qd7 12.Nc3=) 11...b5?? (11...e4!? 12.Ng1 Be6–/+) 12.Rc1 (better 12.e4+–) 12...e4=+ 13.Ng1 0-0 14.Nb5? (better 14.Nh3!?=+) 14...Bb2 (14...ab5 15.Bb5 Bd7 16.Bc4–+) 15.Qb2 ab5 16.Bb5 Bb7?? (16...Bd7 17.Be2–+) 17.Qc3 (better 17.Bc4 Nd7 18.Bf7 Rf7 19.f4+–) 17...Qf6 (17...Ne7 18.Qc7 Rc8 19.Bc4–+) 18.Qf6 (18.f4 Qh4 19.g3 Qe7–+) 18...Rf6–+ (18...gf6?! 19.Rc3–/+) 19.Rc3 Ba6?? (better 19...Nd7–+) 20.a4?? (20.Ba6 Na6 21.b5–+) 20...Nb4 (better 20...Bb5 21.ab5 Ra1 22.Ke2 Nb4–+) 21.Rc7 (21.Ba6 Raa6 (worse 21...N4a6 22.Nh3–+) 22.Nh3 N8c6–+) 21...Nd3 (21...Bb5 22.d4 Ra4 23.Ne2 Be2 24.Rc8 Kf7 25.Rc7 Kg6 26.Ke2 Ra2 27.Kf1–+) 22.Ke2 (22.Bd3 Bd3 23.Ne2 Ra4 24.f3–+) 22...Bb5 23.ab5 (23.f3 Ra4 24.Nh3–+) 23...Rb6 (better 23...Ra1 24.Rc8 Rf8–+) 24.Nh3 h6 (24...Rb5 25.Rc8 Kf7 26.f3–+) 25.Nf4 (25.f3 Rb5 26.fe4 fe4–+) 25...Nf4 26.ef4 Rb5 27.Rd1 (27.Rc8 Kh7–+) 27...Na6 28.Re7 Rb4 (28...Rd8 29.g3–+) 29.g3 (29.Ra1 Rb2 30.Rd7 Rb6–+) 29...Rab8 (better 29...Nc5!? 30.Rc1 Kf8 31.Rc7–+) 30.f3 Rc8 (30...Nc5 31.Rc1 ef3 32.Kf3–+) 31.fe4 Re4 32.Re4 fe4 33.Ke3 Rc4 34.d3 ed3 35.Kd3 Rc8 36.Ke3 Re8 37.Kf3 Nc5 38.h4 (better 38.Rd5 Rc8 39.f5–+) 38...Nd7?? (better 38...Ra8 39.Re1 Kf7–+) 39.Rd7+– Kh7 40.h5 Kg8 41.g4 Kf8 42.g5 Re6 (42...hg5 43.fg5 Re1 44.Kf4+–) 43.g6 Re8 44.Rf7 Kg8 45.Kg4 Re4 46.Kf5 Re3 47.Rd7 Re8 48.Rf7 Re3 49.Rb7 Re8 50.Rb5 Kf8 51.Re5 Re7?? (better 51...Rb8+–) 52.Re7+– Ke7 53.Ke5 Kd7 54.Kd5 Ke7 55.Ke5 Kd7 56.f5 Ke8 57.Ke6 Kf8 (57...Kd8 58.f6 Kc8 59.fg7 Kc7 60.g8Q Kc6 61.Ke5 Kb5 62.Qb3 Kc5 63.g7 Kc6 64.g8Q Kc7 65.Qgd5 Kc8 66.Qbb7) 58.f6 (58.Kd7 Kg8 59.Ke7 Kh8 60.f6 gf6 61.Kf8 f5 62.g7 Kh7 63.g8Q) 58...Kg8?? (58...gf6 59.Kd6=) 59.Ke7 (better 59.f7 Kf8 60.Kf5+–) 59...gf6= 60.Kf6 Kf8?? (60...Kh8 61.g7 Kg8 62.Kg6+–) 61.Ke6 (61.g7 Kg8 62.Kg6+–) 61...Kg7= 62.Kf5 Kf8 63.Kf6 Kg8 64.Ke6 Kf8 ½–½. dbinc007 – simonrichards, gameknot.com, 2017.

3.Bb2 Bb4 4.Be5 Nf6 5.a3 Be7 6.Nf3 Nc6 7.Bb2 0-0 8.Bc4 d5 9.Bb3 Na5 10.Ba2 Re8 11.0-0 b5 12.Nd4 Nc4 (12...Qd7 13.Qf3=) 13.Bc4 bc4 14.Qf3 (14.Nc6!? Qd6 15.Ne7 Re7 16.Bf6 Qf6 17.Nc3=) 14...Qd7=+ 15.Nc3 Rb8 16.Rfb1 c5 17.Nde2 d4 18.Nd1 Bb7 19.Qh3 Be4 20.Bd4 (better is 20.Rc1 Bc2! 21.Rc2–+) 20...Rb1 21.Rb1 Bc2 22.Ra1 cd4 23.Nd4 Ng4 24.Nb2 Bf6 25.Rf1 Be4 26.Qh5 Re7 27.Qh3 Be5 28.Nc4 Bh2 29.Kh1 Bd3 30.f3 Bf1 31.fg4 Bb8 32.Nf5 Re6 33.Nb2 Qd2 34.Na4 Bd3 35.g3 Qe1 36.Kh2 Bf5 (37.Nc3 Rh6 38.Kg2 Rh3 39.Ne2 Be4 40.Kh3 Qh1) 0–1. Valica,Slavo – Lonsdale,David Robert, CO1–03 b2–b4.com, 2003.

3.Bb2 Bb4 4.Be5 Nf6 5.a3 Be7 6.Bf6 Bf6 7.d4 c5 8.c3 cd4 9.cd4 Nc6 10.Nf3 Qe7 (10...d5 11.Nc3=) 11.Be2 (11.Nc3 Qe6+=) 11...d5 12.0-0 0-0 13.Nc3 Be6 14.Rb1 (14.Qb3 Rad8=) 14...b6 (14...Qa3!? 15.Qd3 Nb4=) 15.Bb5 Na5 16.Qa4 Rac8 17.Rfc1 Nc4 Exerts pressure on the isolated pawn (17...Qf7 18.Ne2+=) 18.Bc4 (better is 18.Nd5 Bd5 19.Bc4 (19.Rc4?! Bc4 20.Bc4 Kh8=) 19...Bc4 20.Rc4+/–) 18...Rc4= 19.Qb3 Rfc8 20.Ne2 (20.Rc2 Qc7 21.Nb5 Qd7 22.Rc4 dc4=) 20...Bf7 21.g3? (better is 21.Rc4 dc4 22.Qb5=) 21...Bh5–+ 22.Nd2 Be2 23.Nc4 dc4 24.Qb4 Qb4 25.Rb4 c3 26.Rb3 c2 27.Rb2 Bd3 28.f3 Re8 29.Kf2 Rc8 30.Rb3 Ba6–/+ 31.Rb2 Bd3 32.Rb3+= Ba6 33.Rb2 Rc3 34.Rbc2 Ra3–/+ 35.Rc7 Bd3 36.Rd7 a5?? 37.Rc8 (37.Rc8 Bd8 38.Rcd8#) 1–0. bluepiramid2 (1710) – luckycheck, kurnik, 2012. (=1.e3 f5 2.b4)

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

3.Bb2 e4 4.d4 Bb4 5.c3 Be7 6.Qh5 (6.Ne2 Nf6–/+) 6...g6 7.Qe2 (7.Qd1 Nf6–/+) 7...Nf6 8.Nd2 (8.c4 d5–/+) 8...0-0 (8...d5 9.Nh3–/+) 9.0-0-0 (9.Nh3 d5–/+) 9...c5 (9...d5 10.Nh3–+) 10.dc5–/+ Na6 (10...b6 11.Nh3–/+) 11.h4 (better is 11.Nb3!?–/+) 11...Nc5–+ 12.h5 Nd3 13.Kb1 Nb2 (13...Nh5!? 14.Nb3–+) 14.Kb2–/+ Nh5 15.Rh5 (better is 15.Nb3–+) 15...gh5 16.Qh5 d5 17.Ka1 (17.Ne2 Bh4 18.g3 Bf6–+) 17...Bh4 (17...f4 18.f3–+) 18.Nh3 Bf6 19.Rc1 Qc7 20.Nb1 Rd8 21.Ng5 Qe7 22.f4 ef3 23.Nf3 Qe3 24.Rc2 Rb8 25.Qh2 f4 26.Be2 Bf5 27.a4 Bc2 28.g3 Qc1 29.Qg1 Bc3 30.Ka2 Qb2 0–1. Knight – Master1, mySchach.de, 2004.

3.Bc4 Bb4?! 4.Bg8 d5 5.Bb2=.

3.Bc4 d5 4.Bb5 c6 5.Ba4 Bb4 6.Qh5 g6 7.Qe2 Nd7 8.c3 Bd6 9.d3 Ngf6 10.Nf3 e4 11.de4 fe4 12.Nfd2 0-0 13.c4? (13.Bc2–+) 13...Be5 (14.cd5 Ba1 15.dc6 Ne5–+) 0–1. Stiller – JanP (2510), ChessWorld.net, 2003.

3.c3 Nf6 4.Nf3=.

3.c3 g6 4.d4 d6 5.Nd2 (5.Nf3 Nf6+=) 5...Nf6 6.Bd3 e5 7.h3 (7.Nh3 f4=) 7...e4 8.Be2 Be6 9.g4 (9.c4 d5=) 9...h6 10.c4 d5 11.cd5 Bd5 12.gf5 gf5 13.Bh5 Bf7 (13...Kd7 14.Bg6 Be6 15.Ne2–/+) 14.Bf7=+ Kf7 15.Ne2 Nc6 (< 15...Bb4 16.Qb3 Nd5 17.Nf4+=) 16.a3 Bd6 17.b5 Ne7 18.Nc4 Nd7 (18...Rg8 19.Nd6 cd6 20.Bd2=+) 19.Nc3 Nb6 (19...Qg8 20.Rf1=) 20.Na5 (20.Nb6 ab6 21.Bb2 Qg8=) 20...Rb8= 21.Rg1 Kf6 (21...Ke8 22.Bb2=) 22.Qh5 (22.f3 Rg8 23.Rg8 Qg8 24.fe4 Qg1 25.Kd2 Qh2 26.Qe2 Qh3 27.e5 Be5 28.de5 Ke5 29.Bb2+–) 22...Qe8= 23.Qh4 Ke6 24.Ne4 (24…fe4 25.Qe4 Kd7 26.Nb7=) =. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

3.Bc4 Bb4 4.c3 Bd6 5.d4 Qg5 6.Qf3 c6 7.Nh3 Qg4 8.Be2 Qf3 9.Bf3 Nf6 10.Be2 Be7 11.Nf4 d5 (11...d6 12.Bc4 Nd5 13.Nd5 ed5 14.Bd3–/+) 12.Nd2 h6 (better is 12...Bd6!?=+) 13.Ng6= Rg8 14.Ne5 (14.Ne7!? Ke7 15.Ba3 Kf7 16.Bd6=) 14...Bd6 15.Ndf3 Be5 (15...Nbd7 16.c4=+) 16.Ne5 (16...Nbd7 17.Nf3=+). dugmak – gengar, ChessWorld.net, 2005.

3.Bb2 e6 4.g3 Nf6 (4...Bb4?? 5.Bg7 Nf6 6.Bh8+–) 5.a3 Nc6 6.Bg2 d5 7.d3 Be7 8.0-0 0-0 9.Nbd2 b5 10.c4 Bb7 11.Qb3 Rb8 12.Rac1 Qd6 13.Rfd1 Rfc8 (13...Qd7 14.Qc3+=) 14.c5 (14.cd5 Qd5 15.Qc3 Qd6+/–) 14...Qd7+= 15.e4 Kh8 16.Ng5 Nd8 17.Ndf3 Bc6? (better is 17...h6!? 18.Nh3 fe4+=) 18.Ne5+– Qe8 19.Ne6! de4? (19...Ne6 20.ed5 Double attack (20.ed5 Decoy)) 20.de4 Nd7 (20...h6 21.Nc6 (worse is 21.ef5 Bg2 22.Ng6 Kh7 23.Bf6 Ne6 24.Be7 Bh3 25.Qe6 Bf5 26.Qf5 Qg6 27.Qg6 Kg6+–) 21...Nc6 22.ef5+–) 21.Nd8 (better is 21.Nc6 Ne6 22.Qe6+–) 21...Ne5 22.Nc6 (22.Be5?! Rd8 23.Re1 fe4 24.Bc7 Rd3+–) 22...Nc6 23.ef5 Nd8 24.Re1 Qf8 25.Rcd1 Bf6 (25...Nf7 26.Rd7 Re8 27.Rc7 Nh6+–) 26.Bf6 Qf6 (26...gf6 27.Rd7 Nc6 28.Bc6 Re8+–) 27.Re8 Qf8 28.Rf8 1–0. Tica,Sven (2095) – Ozimec,Zoran (1760), Rijeka CRO, 2014. (=1.Nf3 f5 2.b4 a6)

3.c4 d6 4.Bb2 (4.d4 Nf6+=) 4...e5= 5.e3 g6 (5...Nc6 6.a3=) 6.d4 Bg7 7.de5 de5 (better is 7...Nc6!?+=) 8.Qd8+– Kd8 9.Ne5 Be5?? (better is 9...Ke8 10.Bd4 b6+/–) 10.Be5+– 1–0. DEFFM – GuestMSKZ, freechess.org, 2018.

3.Bb2 Nf6 4.c4 Bg7 5.Nc3 0-0 6.e3 d6 7.h3 (7.d4 c5 8.bc5 dc5+=) 7...e5= 8.g4 (better 8.d4!? e4 9.Nd2=) 8...e4 9.Nd4 fg4 10.hg4 (10.d3 c5 11.bc5 dc5-/+) 10...Bg4 (10...c5!? 11.g5 Ng4 (11...cd4 12.gf6 de3 13.Ne4 ef2 14.Kf2-/+) 12.Ne4 cd4 13.Bd4 Bd4 14.ed4 Bf5-+) 11.Be2-/+ Be2 12.Nce2 c6?? (12...Qe8!? 13.Nf4 Nfd7-/+) 13.Nf4 (13.Ne6!? Qe7 14.Nf8 Qf8 15.Nf4+/-) 13...Re8 (13...Rf7 14.Nde6 Qd7 15.d3=) 14.Nde6 White prepares the advance c5 14...Qe7 15.Ng7 Qg7 (15...Kg7 16.f3=+) 16.Rg1 (16.d3!?=) 16...Qf7=+ 17.Rb1 (17.d3 Nbd7 18.de4 A) 18...Qc4?! 19.Qd6 Re4 20.Ng6= (worse 20.Bf6 Nf6 21.Qf6 Rf4 22.Qf4 Qc3 23.Ke2 Qb2 24.Kf3 Rf8=+); B) 18...Re4?! 19.Qd6 Rc4 20.Rd1-/+; C) 18...Ne5-/+) 17...d5 (17...Nbd7 18.d3-/+) 18.c5 (18.Bf6!? Qf6 19.cd5=) 18...Nbd7-/+ 19.Ke2 (19.f3 Qe7-/+) 19...Ne5 20.Qf1 (20.Be5!? Re5 21.d4 ed3 22.Qd3-/+) 20...Nf3 21.Rg3 d4 22.Bd4?? (22.Qc1 Qa2 23.d3 Nd5 24.Nd5 ed3 (24...Qd5?! 25.de4 d3 26.Kf1 Qe4 27.Qd1-+; 24...cd5?! 25.Rf3 ef3 26.Kf3-+) 25.Kd3 Qa6 26.Kc2 Qe2 27.Kb3 cd5 28.Rf3 Qf3 29.Bd4 Qf2-+) 22...Nd4 (better 22...Qc4 23.Kd1 Qf1 24.Kc2 Nd4 25.ed4 Qf2-+) 23.ed4 Nd5 (23...Qa2 24.Qc1-+) 24.Nd5-/+ cd5 (24...Qd5!? 25.Ke1 Qa2-+) 25.Qh3=+ Qf6 (better 25...Re6=+) 26.Ke3? (better 26.Rh1!? Re7 27.Qh4=+) 26...Rf8-+ 27.Qg2 Qf4 (better 27...Qa6!? 28.Qf1 Qa3 29.Rb3 Qa2-+) 28.Ke2=+ Rf7 29.Rg4? (29.Rg5 Rd8 30.Re5 Qf6=+) 29...Qf5 (29...Qf6 30.Qg3-+) 30.Rh1 (30.Rg5!? Qd7 31.Ke1-/+) 30...Raf8 (30...Qf6 31.Kd1-+) 31.Rh2 Qf6 32.Rgh4? (better 32.Qh3-+) 32...Qd4 33.Qg5 (33.Rh6-+) 33...Rf2 34.Rf2 Qf2 35.Kd1 Qf1 36.Kc2 Qf5 (better 36...Qc4 37.Kb2 Qb4 38.Kc2 Qc5 39.Kb3 Qc4 40.Kb2 Qb4 41.Kc2 Rc8 42.Kd1 Qb1 43.Ke2 Qd3 44.Kf2 Qf3 45.Kg1 Rc1 46.Kh2 Rh1) 37.Qe3 Qf2 38.Qh6 (38.Qh3 Qd4 39.a3 a5-+) 38...Rf7 39.Rh2 (39.a3 e3! 40.Rh2 Qf5 41.Kc3 d4 42.Kb2 Qe4-+) 39...Qf5 (better 39...Qd4 40.Qh3 Qc4 41.Qc3 Qa2 42.Qb2 Qa4 43.Qb3 Qb3 44.Kb3 Rf3 45.Ka4-+) 40.Qh4 e3 41.d3 (41.Kc3 Qe5 42.d4 Qf6-+) 41...Qe5 (better 41...Qf2 42.Kc3 e2 43.Qd8 Kg7 44.Rf2 e1Q 45.Rd2 Qc1 46.Kb3 Qd2 47.Qd5 h5 48.Qd4 Kh6-+) 42.Qd8 (42.Re2 d4-+) 42...Kg7 (42...Rf8 43.Qh4 Qh2 44.Qh2 Rf2 45.Kd1 Rh2 46.Ke1-+) 43.Qh4 (43.Re2-+) 43...Rf2! 44.Rf2 ef2 45.Qf2 a5! 46.d4 (46.ba5 d4 Combination) 46...Qe4-+ 47.Kc3 ab4 48.Kb4 Qb1 (48...g5 49.Ka5 Qe6 50.Qg3 Qa6 51.Kb4 Qc4 52.Ka3 Qc1 53.Kb3-+) 49.Ka3 (49.Ka5 h5-/+) 49...Qb5 (49...Qd3!? 50.Ka4-+) 50.Qe3-/+ Qa5 (50...Qa6 51.Kb3 Qf6 52.Kc3-+) 51.Kb2 Qb4 (better 51...Qd8!?-/+) 52.Ka1= Qc4 53.Qe5 (better 53.Qe7!? Kh6 54.Qh4 Kg7 55.Qe7 Kg8 56.Qe6 Kf8 57.Qf6 Ke8 58.Qh8 Kf7 59.Qh7 Kf6 60.Qb7 Qd4 61.Qb2=) 53...Kh6-/+ 54.Qe3 Kh5 55.Qh3 Kg5 56.Qg3 Kf5 57.Qf3 Ke6 58.Qe3 (58.Qg4 Ke7 59.Qg5 Kd7 60.Qg4 Kd8-/+) 58...Kd7-/+ 59.Qe5?? (better 59.Qh3 Kd8 60.Qh4 Kc8 61.Qh3 Kb8 62.Qg3 Ka7 63.Qa3 Qa6 64.Qb3-/+) 59…Qc1 0-1. DoumBlanchette (1900) - SCIENS (1835), Rated Blitz game, lichess.org, 2014. (=1.Nf3 f5 2.b4)

3.Nc3 Bg7 4.e3 d6 5.Bc4 Nf6 6.Bb2 c6 7.0-0 e5 8.b5 d5 9.Be2 e4 10.Nd4 0-0 11.Ba3 Re8 12.Rb1 Be6 (12...a6!? 13.b6 Be6+=) 13.bc6+/– bc6 14.f3 Qc7 15.fe4 (worse is 15.Ne6 Re6 16.fe4 Ne4 17.Ne4 Re4+=) 15...de4? (better is 15...Ne4 16.Ne4 fe4 17.Ne6 Re6+/–) 16.Ne6+– Re6 17.Bc4 Nd5 (17...Qf7+–) 18.Nd5 cd5 19.Bd5 Qd7 20.Ba8 Re8 21.Qe2 Nc6 (21...Rd8+–) 22.Qc4 Re6 23.Rb7 Qe8 24.Re7! Qa8 (24...Ne7 25.Qe6 Double attack (25.Qe6 Decoy; 25.Qe6 Interception)) 25.Qe6 Kh8 26.Re8 Qe8 27.Qe8 Bf8 28.Qf8 1–0. Janek – Gato, internet, 2016.

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.f4).

3.Nc3 d5 4.d4 (4.Nf3 Qd6=+) 4...e6 5.a3 c6 6.e3 b6 7.h3 (7.Nf3 Be7=) 7...Be7=+ 8.b5 (8.Nf3!?=+) 8...0-0–/+ 9.Nf3 Ne4 10.Ne4 fe4 11.Ne5 Bh4 12.Kd2 c5 (12...cb5 13.Bb5 a6 14.Be2=+) 13.dc5 bc5 14.Bb2 d4 (14...Bf6 15.Qg4=+) 15.Ke2 (15.ed4 Rf4 16.Kc1=+) 15...g5 16.Ng4 h5 17.Ne5= Qa5 18.Ng6?? Qb5–+ 19.Kd2 Qa5 20.Kc1= Rf7 21.Nh4+= gh4 22.ed4 Rf5 23.Be2 c4 24.Bh5?? Rh5–+ 25.Qg4 Kh7?? 26.d5!+– c3 27.Qh5 Kg8 28.Qe8 Kg7 29.Qe7 Kg6 30.Qe8 Kf6?? 31.Qh8 Kg6 32.Qc3 Qd8?? 33.Qg7 Kh5 34.Qh7 1–0. Garyman – goffy, ChessWorld.net, 2005.

3.e3 e6 4.d3 (better is 4.a3!?=) 4...Bb4–/+ 5.c3 Ba5 6.Bd2 (6.Qf3 Qe7–/+) 6...d5 (6...0-0 7.Nf3–/+) 7.Na3 (7.Nf3!?=+) 7...0-0–/+ 8.Nf3 Nc6 (8...Qe7 9.Qa4 Bb6 10.Nc2–/+) 9.Be2 (9.Nc2 Bb6=+) 9...a6 (9...Qe7 10.Qa4–/+) 10.0-0 (10.Nc2 Qe8=+) 10...b5 (10...Qd6 11.Nc2–/+) 11.d4 (11.Nc2 Qd6=) 11...b4 (11...Ne4!?–/+) 12.Nb1 (12.cb4 Bb4 13.Bb4 Nb4=) 12...Rb8 13.Ne5 Ne5–/+ 14.de5 Ne4 15.cb4 Nd2 16.Qd2 Bb4 17.Qc2 c5 18.a3 Ba5 19.Qc5 Bb6 20.Qb4?? Be3–+ 21.Kh1 Rb4 22.ab4 Bd4 23.Ra4 Qd7 24.Bd1 Bb7 25.Bb3 Rc8 26.Ra1 Ba1 27.Nd2 Bc3 28.Nb1 Qc7 29.Rc1 d4 30.Be6 Kf8 31.Bf5 Rd8 32.Bh7 d3 33.Rd1 Qc6 34.Rg1 Qc4 35.Rc1 d2 36.Rd1 Qb3 37.Rd2 Rd2 38.Nd2 Qd1 39.Nf1 Qf1 0–1. Gregor123 – Master1, mySchach.de, 2004.

3.e3 g6 4.Bc4 d5 5.Bb3 e6 6.a3 Nbd7 (6...Ne4 7.Nf3 Bg7 8.d4=+) 7.c4 (7.Bb2 a5=) 7...Bg7 8.Bb2 0-0 9.Nf3 c6 (9...dc4 10.Bc4 Nb6 11.Be2=) 10.Nc3 (10.0-0 dc4 11.Bc4 Nb6=) 10...Ne4 11.Qc2 Ndf6 12.Ne2 (12.0-0 b5 13.d3 dc4 14.dc4 Ng4+=) 12...Bd7 (12...dc4 13.Qc4 a5 14.Qc2=) 13.0-0 Rc8 (13...b5 14.d3 bc4 15.dc4=) 14.Be5 (14.d3 dc4 15.Bc4 Nd6+/–) 14...Qe7 (14...dc4 15.Bc4 b5 16.Bb3=) 15.c5 Ng4 (15...Rf7 16.d3+–) 16.Bg7+/– Qg7 17.h3 Nh6 18.Kh2 Nf7 19.d3 Nf6 20.Qb2?? h6 21.Qd4 g5 22.Ne5 Rcd8 23.Nf7 Rf7 24.a4 Re8 25.Rae1 e5 26.Qa1 ef4= 27.ef4 Rfe7 28.Qd1 Re3 29.Qd2 Qe7 30.Bd1 gf4 31.Rf4 Qe5 32.g3 Nh5= 33.Re4 Rd3!? 34.Qd3 fe4 35.Qe3 Qf6 36.Nd4 Ng7 37.Be2 Ne6 38.Ne6 Be6 39.Rf1 Qg7 40.b5 Rf8 41.Rf8 Qf8 42.bc6 bc6 43.g4 Qf6 44.Kg3 Kg7 45.a5 Qe5 46.Qf4 Qc3 47.Kg2 Bf7 48.g5–/+ hg5 49.Qg5 ½–½. Blumenberg,Walter – Heedt,Thorsten, Porz op, 1995.

3.gf5 c6 4.Nf3 d5 5.d4 (5.Nd4!?+=) 5...Bf5=+ 6.Nc3 e6 7.a3 Bd6 8.Bb2 0-0 9.Nh4 Bg4 10.h3 Bh5 11.Bg2 Nbd7 12.Bf3? (12.Rg1!?-/+) 12...e5 13.Nf5 Bf3 14.Nd6?? (better is 14.ef3 Ne8 15.Qd3-+) 14...ed4 (14...Bh1 15.Nb7 Qb6 16.Nd6 ed4 17.Na4-+) 15.ef3 (15.Rg1 dc3 16.Bc3-+) 15...dc3 16.Bc3 Qe7 17.Ne4 de4 (worse is 17...Ne4 18.Qe2 Rf3 19.Qf3 Nc3 20.Qe3-+) 18.fe4 (18.Qe2 Nd5 19.Bb2 Rf3 20.Rg1-+) 18...Qe4 19.Kd2 Qf4 20.Kd3 Ne5 (20...Nc5! 21.Ke2 Nd5 22.Qd5 cd5 23.Kd1-+) 21.Be5 Rad8 (21...Rad8 22.Kc3 Qe5 23.Kb3 Ne4-+) 0-1. AvImd (1725) - slap007 (1760), lichess.org, 2021.

3.gf5 d5 4.Bh3 Qd6 5.a3 Nc6 (5...g6 6.fg6 Bh3 7.g7 Bg7 8.Nh3=) 6.Nf3 e5 7.fe6 Be6 8.Be6 Qe6 9.d3 Bd6 10.Nc3 0-0 11.Nb5 a6 (11...Ng4 12.h3 (worse is 12.Nd6 Rf3 13.Ne4 de4 14.ef3 ed3 15.Kf1 Nge5=+) 12...Nge5 13.Ng5+=) 12.Nd6+= Qd6 13.Rg1 Rae8 (13...Ne5 14.Nd4 Nfg4 15.f4=) 14.Bb2 (14.c3 Nd7 15.Be3 Nde5+=) 14...Kh8 (14...Nh5!? 15.Kd2 Qh6 16.e3 Rf5=) 15.Qd2+= d4 16.0-0-0 a5? (better is 16...Nh5+=) 17.b5+- (17.ba5?! Qd7+=) 17...Ne5 18.Nd4 c6? (better is 18...Ng6+-) 19.Rg7! (19.Qa5?! Ng6 20.bc6 bc6+-) 1-0. opperwezen - WHLmS2 (2515), lichess.org, 2017.

3.g5 Ne4 4.d3 Nd6 5.Nf3=.

3.g5 Ng4 4.h3 (4.d4!? e5 5.h3 Bb4 6.c3 Nf2 7.Kf2+=) 4...Ne5= 5.d4 Ng6 6.h4 e6 7.h5 Ne7 (7...Bb4? 8.c3 Bc3 9.Nc3+-) 8.Bb2 (8.Nf3 Nd5 9.c3 c6+=) 8...g6 (8...Nd5!?=+) 9.hg6 Ng6 10.d5 (10.Qd2 h5=) 10...Rg8 (10...Bb4 11.Nd2 e5 12.Ngf3=+) 11.de6 Qe7 (better is 11...Qg5!? 12.Nf3 Qe7 (12...Bb4? 13.c3 Qe7 14.ed7 Nd7 15.Qb3+-) 13.ed7 Nd7=) 12.ed7+/- Qd7 13.Qd7 Kd7? (13...Nd7 14.a3 Nge5 15.Nd2+/-) 14.Nd2 (better is 14.Rh7 Ke8 15.a3+-) 14...Ke6?? (14...Bb4 15.Rh7 Be7 16.Ngf3+-) 15.Ngf3 (15.e4!? Ne5 16.f4 Nbd7 17.fe5 Ne5+-) 15...Be7 (15...Bg7 16.0-0-0 Bb2 17.Kb2+-) 16.0-0-0 (better is 16.e3 Kd7+-) 16...Nf4? (16...Nf8 17.e4 Kf7 18.ef5 Bf5 19.Re1+-) 17.Nd4 (better is 17.Rh7 Nc6 18.e4 fe4 19.Bc4 Nd5 20.Rh6 Kf5 21.Bd5 ef3 22.Bg8 Bg5 23.Rh8+-) 17...Ke5 (17...Kf7 18.e3 Nd5+-) 18.N2f3 (18.Nc4 Kd5 19.e4 fe4 20.Ne3 Kd6 21.Ndf5 Ke6 22.Bc4 Nd5 23.Rh7 Rg7 24.Rg7 Kd7 25.Rd5 Ke8 26.Re7 Kf8 27.Rd8) 18...Kd5 19.e3 (better is 19.Nf5 Ke6 20.e4+-) 19...Ne6 (19...Bb4 20.Ne6!! Kc6 21.Nf4 b5+-) 20.Nf5 Ke4 21.Ne7 (21.Nd2 Kf5 22.Bd3 Kg5 23.Rdg1) 21...Re8 (21...Kf3 22.Rh3 Kf2 23.Rd2 Kg1 24.Bg2 Rg5 25.Rh1) 22.Nd2 1-0. banistyle (1915) - tankeroldan (1665), lichess.org, 2020.

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.a3).

3.c4 e5 4.e3 Be7 5.Be2 d6 6.Bb2 Bd7 (6...0-0 7.d4 ed4 8.ed4=) 7.d4= ed4 8.ed4 c5 9.Nf3 Na6 10.bc5 dc5 11.d5 Qa5 12.Bc3 Qc7 13.Be5 Bd6 14.Bf6 gf6 15.Bd3 Be5 16.Ra2 Qa5 (16...0-0-0+=) 17.Nbd2 (17.Qd2 Qc7+/-) 17...0-0-0 (better 17...Nb4!? 18.ab4 Qa2 19.bc5 0-0=) 18.Qc2+/- f4 19.0-0 Rde8 (19...Ba4 20.Bf5 Kb8 21.Qd3+/-) 20.Re1 h5 21.Bg6 (21.Ne5 Re5 22.Rb1 Rhe8+/-) 21...Re7 22.Ne5 fe5 23.Rb2 Rg7 (better 23...Rg8+/-) 24.Reb1 (better 24.Re5!? Rhg8 25.Be4+/-) 24...Rhg8= 25.Rb7 (better 25.Be4 Qa3 26.Nb3= (worse 26.Rb7 Nb4 27.R7b4 cb4=+)) 25...Rg6-/+ 26.Kh1 ½-½. battousai - pcmvr (2850), net-chess.com, 2022.

3.Nf3 d5 4.Bb2=.

3.Nf3 d6 4.d4 e6 5.g3 (5.c4 Be7=) 5...Be7 (5...a5 6.b5=) 6.Bg2 0-0 (6...a5 7.b5=) 7.0-0 c6 (7...a5 8.b5=) 8.c4+= a5 9.b5 cb5 10.cb5 Nbd7 11.Qd3 Ne4 (11...d5 12.Bf4+=) 12.Nbd2 (12.Bf4 Bf6+=) 12...Ndf6 (12...d5 13.Qe3=) 13.a4 Kh8 (13...Qb6 14.Nc4 Qc7 15.Bf4+=) 14.Ba3 (14.Qe3 Nd5 15.Qb3 Bf6=) 14...b6 15.Rac1 Ra7 16.Qb3 Qd7 17.Ne4 Ne4 18.Rc2 Bb7 19.Rfc1 Bd5 20.Qe3 Qb7 21.Nd2 Qa8 22.Ne4 fe4 23.h4 Rd8 24.Rc3 Rad7 25.R1c2 Re8 26.Qc1 Rdd8 27.Rc7+= Bf6 28.Qe3 Rg8 29.Qc3 Rgf8 30.Bc1 Kg8 31.h5 Rde8 32.h6 g6 33.Qa3 Qd8 34.Qe3+= Qa8 35.Ba3 Rd8 36.R2c6 Bc6–/+ 37.Rc6 Qb8 38.Be4 Rfe8 39.Bf3 Re7= 40.Bg4 (40...e5 41.Bd6 Rd6 42.Rc8 Qc8 43.Bc8 Rd4 44.Qf3=). Baer,Werner (1900) – Bonetti,Shane (2110), TT–15 ETC, 2005.

3.g3 e5 4.Bg2 d5 5.Nh3 Bd6 6.Bb2 0-0 7.d3 Qe8 8.e3 f4 9.ef4 ef4 10.Kf1 f3?? (better is 10...Bg4 11.f3 fg3–+) 11.Ng5?? (better is 11.Qf3 Bg4 12.Qe3=) 11...fg2–+ 12.Kg2 Ng4 13.Rf1 Qh5 14.h4 Rf2! 15.Kg1 Bg3 16.Nd2 Qh4 17.Ndf3 Bh2 18.Kh1 Qg3 19.Be5 Qg2# 0–1. sacaniev – grno, kurnik, 2012.

3.b5 d6 4.e3 d5 (4...e5 5.Nf3=+) 5.Nf3= c6 6.bc6 (6.Bb2 e6=) 6...bc6 (6...Nc6 7.Bb2=) 7.Ne5 (7.Be2 Qc7+=) 7...Nbd7 (7...Qc7 8.d4=) 8.Nd3 (better is 8.Nc6!? Qb6 9.Nd4+/–) 8...e6 (8...e5 9.Bf8 Rf8 10.Nc3=+) 9.Bb2 (9.Bf8 Rf8 10.Be2 Ba6=) 9...Be7 (9...Rb8 10.f4=+) 10.Ne5 (better is 10.Nf4 Qb6 11.Ba3 Ba3 12.Na3=+) 10...0-0?? (better is 10...Qb6 11.Nd3 Ba6=+) 11.Nc6+– Qe8 12.Ne7 Qe7 13.Ba3 Nc5 14.d4 Qf7 15.Bc5 Re8 16.Bb5 Rd8 17.0-0 a6 18.Ba4 Ng4 19.Bb6 Rf8 20.h3 Nf6 21.Nd2 Qg6 22.Nf3 Ne4 23.Ne5 a5 24.Ng6 (24...hg6 25.Qc1+–) 1–0. pinecrest1981 – 310, Live Game Caissa's Web, 2005.

3.b5 e5 4.Bf8 Rf8 5.e3=+.

3.d3 b5 4.c4= a6 (4...bc4 5.dc4 e5 6.Nf3=) 5.c5 (5.e4 fe4 6.de4 A) < 6...Ne4 7.Qd5 (< 7.cb5 e6 8.Bd3 Bb7–/+) 7...Bb7 8.Qb7+/–; B) 6...e5=) 5...d6 6.cd6 (6.d4 dc5 7.bc5 e5=+) 6...ed6 (6...Qd6 7.Nc3=+) 7.Nf3 (7.Bb2 d5 8.Qd2 Bd6=+) 7...Nc6 (7...d5 8.Qc1=+) 8.e3 (8.Qc1 Qd7=+) 8...Be6 (8...d5 9.Qd2=+) 9.Be2 d5 10.0-0 (10.Qd2 Qd6=+) 10...Nb4 11.Bb4 (11.Qb3!? c5 12.Ng5–/+) 11...Bb4–/+ 12.Nh4 (12.a4!? 0-0 13.d4–/+) 12...0-0–+ 13.d4 (13.Nf3 f4!–+) 13...Qd6 14.a3 Ba5 15.Nd2 Rab8 16.Bf3? Bc3 17.Ra2 c6 18.Nb3=+ a5 19.Nc5 Bc8 20.Na6?? Ba6–+ 21.Nf5 Qe6 22.Ng3 b4 23.Ne2 Ne4 24.Nf4 Qd7 25.Be2 Be2 26.Qe2 Qd6 27.ab4 ab4 28.Ra6 b3 29.Qg4 Nd2 30.Ra7 g6 31.Qh3 Rf7 32.Rf7 Kf7 33.Qh7 Ke8 34.Qg8? Kd7 35.Qf7 Kc8 36.Qe8 Kb7 37.Qf7 Kb6 38.Ne6 Nf1 39.Kf1 b2 40.Qg6 Ka5 41.Qb1 Qh2 42.Qa2 Kb5 43.Qb3 Ka6 44.Nc5 Ka5 45.Qc3 Kb6+– 46.Qb2 Kc7 47.Ne6 Kc8 48.Qa2 Qh1 49.Ke2+= Qh5 50.f3 Qh2 51.Qa6 Kd7= 52.Nc5 Kd6 53.Nb7?? Ke7?? 54.Qa3 Kf6 55.Kf2? Rb7–+ 0–1. pinecrest1981 – AKHENAMUN, Live Game Caissa's Web, 2006.

3.d3 e5 4.Nf3=+.

3.e3 e6 4.Be2 Be7 5.d3 0-0 6.c4 Nc6 7.Nf3 (7.b5!? Nb8 8.Be7 Qe7 9.Nf3=) 7...Bb4 8.Bb4 Nb4 9.Qb3 a5 10.a3 Nc6 11.d4 b6 12.Nc3 Bb7 13.0-0 Ne7 14.d5 ed5 15.cd5 Kh8 16.Ng5 h6 17.d6 hg5 18.de7 Qe7 19.a4 g6 20.Bc4 Kg7 21.Rae1 1–0. jcekota (2100) – coora (2365), net–chess.com, 2011.

3.Nf3 d6=.

4.Qc1 a6 5.c4 Nc6 (5...d5 6.Qb2 Nc6 7.b5 Ba3 8.Qa3+=) 6.b5 ab5 (6...Ba3 7.Qa3 Ne7 8.c5+=) 7.Bf8 Kf8 (7...Rf8 8.cb5 Na5 9.Nc3+=) 8.cb5= Na5 (8...Ne7 9.Nf3 e4 10.Nd4=) 9.Qc2 d6 10.Nc3 (10.Nf3 e4 11.Nd4 Kf7=) 10...Qe7 (10...Kf7 11.Nf3=) 11.Be2 Be6 (11...c5 12.bc6 Nc6 13.Bc4=) 12.Nf3 g6 13.d4 e4 14.Ng5 Bg8 15.h4 (15.0-0 Nc4=) 15...h6 16.Nh3 Bf7 17.Nf4 Kg7 18.Rh3 (18.Rc1 Rhc8=) 18...g5 (18...Rhc8 19.Rg3 Kh7 20.d5=) 19.Rg3 g4 20.Qb2 (20.d5 Rhc8=) 20...b6 (20...Rhc8 21.Rb1=) 21.Qb4 (21.d5 Nb7+=) 21...Ne8 22.h5 (22.Rc1 Qh4 23.Ncd5 Ra7=) 22...Nf6 23.Rc1 Rhg8 (23...Rhc8 24.Qb2=) 24.Kf1 (24.Qb2 A) 24...Nh5? 25.Nh5 Bh5 26.Nd5+–; B) 24...Bh5? 25.Ncd5 (25.Nh5?! Nh5 26.Nd5 Qd8+=) 25...Nd5 26.Nd5+– (26.Nh5 Kh8+=); C) 24...Rgc8=) 24...Kh7 (worse is 24...Nh5 25.Nh5 Bh5 26.Nd5+/–; worse is 24...Bh5 25.Ncd5 Nd5 26.Nd5+/– (26.Nh5? Kh8 27.Qb2 Qh4 28.Bg4 fg4–+)) 25.f3?? (better is 25.Kg1=) 25...ef3 (25...ef3 26.Bf3 Qe3–+) 0–1. marekt (2180) – jerichosblind (2295), gameknot.com, 2017.

4.Qc1 a6 5.Nf3 Nc6 6.Be2 (6.b5 ab5 7.Bf8 Rf8 8.Bb5 e4 9.Bc6 dc6=+) 6...e4-/+ 7.Nd4 Nd4 (worse 7...Nb4 8.Nf5 c5 9.Bb4 cb4 10.Qb2=) 8.ed4 d5 9.0-0 Bd6 10.d3 c6 11.de4 fe4 12.c4 0-0 13.Nc3 Ng4 14.g3 Nh2 (better 14...Be6=+) 15.cd5?? (15.Kh2 Qh4 16.Kg1 Bg3 17.fg3 Qg3 18.Kh1-/+) 15...Nf1-+ 16.Bf1 cd5 0-1. marekt (2170) - jerichosblind (2300), gameknot.com, 2017.

4.Qc1 a6 5.Nf3 d6+=.

4.Qc1 d5 5.d4 ed4 6.ed4+=.

4.Nf3 e4 5.Nd4 d5+=.

3.Ba3 e5 4.Nf3 e4 5.Nd4=+.

3.Ba3 e6 4.c3 d5 5.Nf3 c6 (5...Bd6 6.d4=) 6.Qb3 Bd6 7.b5 0-0 (7...c5 8.d4=+) 8.Bd6 (8.d4 Ne4=) 8...Qd6=+ 9.bc6 (9.d4 Nbd7=+) 9...Nc6 10.d4 Ne4 (10...e5 11.de5 Ne5 12.Nbd2=+) 11.e3 b6 12.Bd3 Bb7 13.0-0 Rac8 14.h3 (14.a5 ba5 15.Rc1 Nb4=) 14...e5 (better 14...Na5 15.Qb2 Rf7=) 15.c4?? (better 15.a5=) 15...ed4 16.ed4 Na5 17.Qa2 (17.Qa3 Qa3 18.Ra3 dc4-+ (18...Rc4?! 19.Bc4 dc4 20.Ne5=)) 17...Nc4 (17...dc4 18.Bc2-+) 18.Be4? (better 18.Na3!? Qb4 19.Nc4 dc4 20.Rab1-/+) 18...fe4 19.Ne5 (19.Nfd2 Qf6 20.Nc4 Rc4-+) 19...Ne5 20.de5 Qe5 21.Na3 Rc3 (21...Rf7 22.Qd2-+) 22.Nb5 Rfc8?? (better 22...Rc5-+) 23.Nc3=+ Rc3 24.Rac1 Kf8 (24...Rc5 25.Qb3 Bc6 26.a5=+) 25.Rc3 (25.Qb2 d4=) 25...Qc3=+ 26.Qe2 d4 (26...Kg8 27.Qh5 h6 28.Rd1=) 27.Qg4 d3?? (better 27...Qc7=) 28.Qf4+- Ke7 29.Rc1 d2 (29...Qa5 30.Rc7 Ke6 31.Qf7 Ke5 32.Qg7 Kd5 33.Qf7 Ke5 34.Rd7 Qe1 35.Kh2 Qf2 36.Qf2 (36.Rb7?? Qf7 37.Rf7 d2-+) 36...d2 37.Qd4 Kf5 38.g4 Kg5 39.Qe5 Kh4 40.Rh7) 30.Rc3 d1Q 31.Kh2 Qd7 (31...Ke6 32.Rc7 Ba8 33.Qf7 Ke5 34.Qg7 Kd5 35.Rd7 Kc6 36.Rd1 b5 37.Qc3 Kb7 38.Rd7 Ka6 39.Qc5 ba4 40.Ra7) 32.Rc7 1-0. jack0211 (1685) - bohemond_1 (1710), Rated Bullet game, lichess.org, 2014.

3.c3 e5=+ 4.d3 Be7 5.e3 0-0 6.f3 (6.Nf3 e4 7.Nd4 d5=+) 6...d5-/+ 7.g3 (7.a5 d4-/+) 7...e4 (7...Re8 8.Kf2-/+) 8.h4 (8.Nd2 Qd6-/+) 8...ef3 (8...Qd6 9.Ne2-/+) 9.Ra2 f2! 10.Kf2 (10.Rf2 Ng4 Decoy; 10.Kf2 Be6 Combination) 10...f4 (10...Qd6 11.Rb2-/+) 11.Ke1? (better 11.gf4!? Ng4 12.Kg2=+) 11...fe3 12.Rah2? (better 12.Be3 Ng4 13.Re2-+) 12...d4 (12...Ng4 13.Qb3-+) 13.Qe2 (13.Bh3 Bh3 14.Nh3 dc3-+) 13...dc3 14.Nc3 Bb4 15.Be3 (15.Qc2-+) 15...Bc3 16.Bd2 (16.Kd1 Bg4 17.Nf3 Nd5-+) 16...Qd6 (better 16...Bg4 17.Bc3 Be2 18.Be2-+) 17.Bc3 Re8 18.Bd2 (18.Bf6 Re2 19.Re2 Qg3 20.Rf2 gf6-+) 18...Re2 19.Re2 (19.Ne2 Qd3 20.Rg1 Nc6-+) 19...Bg4 (19...Qg3 20.Kd1-+) 20.Rhh2 (20.Bf4 Qb4 21.Rd2-+) 20...Qd3 (better 20...Qg3 21.Ref2 Nbd7 22.Ne2-+) 21.Nf3?? (better 21.Re8 Ne8 22.Bd3-+) 21...Qb1 (better 21...Qf3!? 22.Rhf2 Qa3 23.Rg2-+) 22.Kf2 Nc6 (better 22...Bf3 23.Kf3 Qf1 24.Rhf2 Qh1 25.Rg2-+) 23.Re6 (23.Re1 Qf5 24.Kg1 Qf3-+) 23...Qb6 (23...Be6 24.Kg1-+) 24.Kg2 Be6 25.Ng5 Bd5 (25...Ng4 26.Rh1 Bd5 27.Kh3 Nf2 28.Kh2 Nh1 29.Ne4 Be4 30.Bc4 Kh8 31.Be3 Qe3 32.h5 Qg3) 26.Kh3 Qb5! 27.Re2?? (27.ab5 Nd8 Combination; 27.Bb5 h6 Combination) 27...Qd3 (better 27...Qa4 28.Bc3 Qg4 29.Kh2 Nh5-+) 28.Be3 (28.Re8 Re8 29.Bd3 h6-+) 28...Qe2! 29.Be2 (29.Be2 Re8 Decoy) 29...Nb4 (better 29...Re8 30.Bf3 Bf3 31.Nf3 Re3 32.Nd2-+) 30.Bf4 (30.Bd4 Re8 31.Bd1 Nc6-+) 30...Rf8 (30...Re8 31.Bf3-+) 31.Bc7 (31.Bd2 Re8 32.Bf3 Nd3-+) 31...b6 (31...Re8 32.Bf1 h6 33.Bf4-+) 32.Bb5 (32.Nf3 Re8 33.Ng1 Be6 34.Kg2 Nbd5-+) 32...Nd3! 33.Bd7 (33.Bd3 h6 Combination) 33...Ne5 (better 33...Nd7 34.Bd6 Rf1 35.g4-+) 34.Bf5 (34.Be6 Be6 35.Ne6 Re8-+) 34...Nf7 (better 34...Re8 35.Nh7 Nh7 36.g4-+) 35.g4 Ng5 36.hg5 Ne4 37.Be4 (37.Kh4 Re8 38.g6 h6-+) 37...Be4 38.Bg3 (38.a5 ba5 39.Ba5 Rf3 40.Kh2 Kf7-+) 38...Rf7 39.Kh4 Rf6! 40.gf6 gf6 41.Bb8 Kf7 (better 41...a6-+) 42.Ba7-/+ Ke6 (better 42...Bc6!?-/+) 43.Bb6+= Bc6 44.a5 Kd6 (44...Bb7 45.Bc7+=) 45.a6+/- Kd7 46.Kh5 (46.Kg3 Kc8+/-) 46...Kc8 (46...Bf3 47.a7+=) 47.Kh6 Kb8 (better 47...Be4!?+=) 48.Kh7+- Bf3 49.Kg7 Bg4 50.Kf6 Bf3 51.Ke6 Ka8 52.Kd6 Be4 53.Kc7 Bf3 54.Kc8 Be4 55.Bc7 (55.Kd7 Bd3 56.a7 Bf5 57.Kd6 Kb7+-) 55...Bf3 (better 55...Ka7=) 56.Bb8+- Be4 57.a7 Bf3 58.Kc7 Be4 59.Kc8 (59.Kb6 Bf3+/-) 59...Bf3+/- 60.Kc7 Be4 61.Kc8 (61.Kb6 Bf3+-) 61...Bf3+/- 62.Kc7 (62.Kd7 Bc6 63.Kd6 Kb7+/-) 62...Be4+- 63.Kc8 (63.Kb6 Bd5+-) 63...Bf3+/- 64.Kc7 (64.Kd7 Bc6 65.Ke6 Be4+/-) 64...Bb7 (64...Be4 65.Kb6 Bf3+-) 65.Kd6 (65.Kb6 Be4+-) 65...Bg2 66.Kc5 Bf3 (66...Kb7 67.Kc4+/-) 67.Kb5 (67.Kb6 Bd5+-) 67...Bh1 (67...Kb7 68.Kb4+/-) 68.Kc4 (68.Kb6 Be4+-) 68...Bg2 69.Kd3 Bf3 70.Kc3 Bg2 71.Kb4 Bh1 72.Bc7 (72.Ka4 Kb7+/-) 72...Bg2 (better 72...Ka7 73.Kc5 Bd5=) 73.Bb6+- Bh1 74.Kc4 Bg2 75.Kc5 Bf3 76.Kd6 Bg2 77.Kc7 Bf3 78.Kc8 Bg2 79.Bc7 (better 79.Be3+-) 79...Bf3 80.Bb8 Bg2 81.Bc7 (better 81.Kd7!?+/-) 81...Bf3 82.Bb6 Bg2 83.Kd7 Bf3 84.Ke6 Bg2 85.Kf5 Bh1 86.Kf4 Bb7 87.Ke5 Bc6 88.Kd6 Bh1 (88...Bg2 89.Bd4+-) 89.Kc5 Bg2 (89...Bf3 90.Kd4 Kb7+-) 90.Kc4 Bh1 91.Kb4 Bg2 92.Bc7 (better 92.Kb5+-) 92...Bh1 93.Bb6 Bg2 94.Kc3 Bh1 95.Kd2 Bb7 96.Ke2 Bc6 97.Ke3 Bd5 98.Kd4 Bh1 99.Ke5 Bg2 (99...Bc6 100.Bd4 Bd5+-) 100.Kf6 Bh1 101.Ke7 Bg2 102.Ke8 Bh1 103.Kd8 Bg2 104.Kc7 Bh1 (104...Bf3 105.Bd4+-) 105.Kc8 (105.Bd4 Bd5+-) 105...Bg2 106.Kc7 Bh1 (better 106...Bf3=) 107.Kd7 ½-½. PINGpongchess (1755) - orutra971 (1700), Rated Bullet game, lichess.org, 2014. (=1.a4 f5 2.b4)

3.d4 e6 4.c3 Be7 (4...a5 5.b5=) 5.Nf3 b6 (5...0-0 6.a5=) 6.a5 Bb7 7.e3 ba5 (7...0-0 8.Be2=) 8.ba5 (8.Ra5 0-0=) 8...0-0 9.Ba3 Ba3 10.Ra3 Nc6 (10...Qe7 11.Bd3=) 11.a6+= Bc8 12.Bb5 Ne7 13.0-0 c6 14.Bc4 (14.Bd3 Rb8+=) 14...Rb8 15.Nbd2 Ne4 16.Bd3 (16.Rb3 Rb3 17.Qb3 Nd5+=) 16...Nd2 (16...d5 17.c4=) 17.Qd2 Rb6 (17...d6 18.Rb1 Rb1 19.Bb1=) 18.c4 (18.Rb1 Rb1 19.Bb1 d6+=) 18...Ra6 (18...c5 19.dc5 Ra6 20.Ra6 Ba6 21.Be2+=) 19.Ra6+/– Ba6 20.Ra1 Qb6?? (better is 20...Bc8+/–) 21.c5+– (21.c5 Qc7 22.Ra6+–) 1–0. NN – InterUllr, internet, 2002.

3.f3 e5 4.b5 b6 (4...d5 5.e3–/+) 5.Ba3 (5.Bb2 d6=) 5...Ba3=+ 6.Ra3 Bb7 (6...a6 7.e4–/+) 7.Nc3 (7.e3 a6=+) 7...0-0 8.Nh3 d5 9.e3 d4 (9...a6 10.f4–/+) 10.ed4 ed4 11.Ne2 (11.Bc4!? Kh8 12.Ne2=+) 11...Qe7 12.Rd3 Nbd7 (better 12...c5!?–/+) 13.Rd4= Rae8 14.Rd3 (14.Qb1 c5 15.bc6 Bc6=) 14...Ne5=+ 15.Re3 (15.Rb3 c5 16.bc6 Bc6=+) 15...Qb4 (15...Nd5 16.Rb3–/+) 16.c3 (16.Qa1 Nc4 17.Rc3=+) 16...Qd6 (16...Qh4 17.g3 Nf3 18.Rf3 Qh5=+) 17.Nef4?? (17.Qb3 Bd5 18.Qb4=) 17...Qc5?? (17...Nf3!? 18.gf3 Re3 19.de3 Qd1 20.Kd1 Bf3 21.Ke1 Bh1 22.Bc4 Kh8 23.Ng5–+) 18.d4?? (better 18.Qc1 Qd6 19.d4+–) 18...Nf3!–+ 19.gf3?? (19.Qf3 Qc3 A double attack) 19...Re3 (19...Qc3 20.Kf2 Ng4 21.Kg3 Ne3 22.Qb1 Qd4 23.Qb3 Kh8 24.Ng5–+) 20.Be2 (20.Kf2 Qc3 21.Bc4 Kh8 22.Be2–+) 20...Bf3 (better 20...Qc3 21.Kf2 Rfe8–+) 21.Rf1 (better 21.dc5 Bh1 22.Kf2 Re2 23.Qe2+–) 21…Be2 (21...Be2 22.dc5 Bd1 23.Kd1 Rd8 24.Kc1 Rc3 25.Kb1 Rd4 26.cb6 cb6–+) 0–1. lindsey000 – detroitlions, gameknot.com, 2018.

3.Nf3 b6 4.Bb2 Bb7 5.b5 d6 6.a5 ba5 7.Bf6 gf6 8.Nd4 c6? (better is 8...e5 9.Nf5 Qd7+/–) 9.e4+– fe4? (9...h5 10.Ne6 Qb6 11.ef5 a6 12.bc6 Nc6+–) 10.Qh5 Kd7 11.Qf5 Kc7 (11...e6 12.Ne6 Qc8 13.Ng5 Ke7 14.Qe4 Kd7 15.Qe6 Kc7 16.Qf6 Qe8 17.Ne6 Kd7 18.Qh8 Qe6 19.Be2 Qe7+–) 12.Ne6 (12...Kc8 13.Nd8 Kd8 14.Nc3+–) 1–0. guest1400 – guest1428, ICC, 2003.

3.Nf3 e5=.

3.Nf3 e6 4.d3 (4.Ba3 Nc6 5.b5 Ba3 6.Na3 Ne7=) 4...d5 (4...Bb4 5.c3 Be7 6.e3-/+) 5.Bd2 Bd6 6.c3 c6 7.d4 Qc7 (7...Nbd7 8.Bg5=+) 8.g3 (8.e3 Nbd7=) 8...Nbd7 9.Bg2 Ne4 10.Qc1 Ndf6 (10...e5 11.c4=+) 11.Bf4 0-0 12.Bd6 Nd6 13.Ne5 Qd8 (13...Ng4 14.Qf4=) 14.Nd2+= h5 (14...Nf7 15.Ndf3+=) 15.Ndf3 Ng4 16.Ng5 (better 16.0-0!?+/-) 16...Ne5= 17.de5 Ne4 (17...Nc4 18.Nf3=) 18.Be4 (18.Nh3 d4 19.Be4 fe4+=) 18...fe4= 19.0-0 (19.f4 ef3 20.ef3 a5+=) 19...Rf5 20.h4 (20.f4 ef3 21.Nf3 Bd7=) 20...Bd7 (20...Re5 21.a5-/+) 21.f4 a5 (21...ef3 22.Qe3=+) 22.Kg2 Qb6 23.Qd2 e3 (23...Rd8 24.Rfb1=) 24.Qd3 (24.Qd4 Qd4 25.cd4 ab4+/-) 24...ab4= 25.Rfb1 (25.cb4 Qb4 26.Qe3 c5+= (26...Ra4? 27.Rfb1 Qc4 28.Ra4 Qa4 29.Rb7+-)) 25...c5 26.cb4 (26.Qe3 Ra4 27.Ra4 Ba4 28.cb4 d4+=) 26...cb4 (26...c4 27.Qc2=+) 27.Nf3 (27.Qb3 Ra5=) 27...Ra4=+ 28.Ra4 Ba4 29.Nd4 Rf7 30.Ra1 Bd7 31.Qe3 Kh7 (31...Rf8 32.Qd3=+) 32.Qd3= g6 33.Rb1 Ba4 34.Nf3 Rc7 35.Qd4 Exerts pressure on the isolated pawn 35...Qb5 36.Ng5 Kh6 (36...Kg8 37.Qd3 Qe8 38.Rb4 Bc2=) 37.Qe3?? (better 37.Qb4 Qe8 38.Ne6 Qe6 39.Qa4+/-) 37...Rc3 38.Qf2 d4 39.Ne6? (better 39.Nf3=+) 39...Qc6-+ 40.Kg1 (40.Kh2 Qe6 41.Qd4-+) 40...Qe6 41.Qd4 (41.Kh2 Rc2 42.Re1-+) 41...Rg3 42.Kf1 Qh3 43.Ke1 Qh1 44.Kd2 Qb1 45.e6 (45.Qa1 Qa1 46.f5 Qc3) 45...Qc2 (45...Qd1) 46.Ke1 Qc1 (46...Qc1 47.Qd1 Qd1 48.Kf2 Qg1) 0-1. Ghevondyan1962 (1675) - anula8279 (1670), Rated Classical game, lichess.org, 2014. (=1.a4 f5 2.b4)

3.Bb2 d6 4.e3 e5 5.Nf3 Nf6 6.a4 Be7 7.Na3 Nbd7 8.c4 Nc5 9.d4 Ncd7 (better is 9...ed4!? 10.ed4 Nce4+=) 10.de5+/– de5 11.Be5 (better is 11.Ne5!? Bb4 12.Ke2+/–) 11...Bb4+= 12.Ke2 0-0 (12...Bb7 13.Bb2+=) 13.Bb2 (13.Nc2 a5+/–) 13...Qe7 14.Qd3 Nc5 15.Qc2 (15.Bf6!? Qf6 16.Qd4=) 15...Bb7+= 16.Nd4? (better is 16.Bd4+=) 16...Be4–+ 17.Nf5 (17.Nc6 Qe8 18.Nb4 Bc2 19.Nac2–+) 17...Qe6 18.g4 Ng4 19.Nd4 Qf7 20.Qc1 Qf2 21.Kd1 Bf3 22.Be2 Bh1 23.Kc2 Be4 24.Kd1 Ne3 25.Qe3 Qe3 26.Bc1 Qg1 27.Bf1 Qf1# 0–1. poganinbezdom – talija1948 (1675), kurnik, 2012.

3.Bb2 e6 4.c4 Nf6 5.a4 Bb7 6.e3 Be7 7.Nf3 d6 8.Be2 c6 9.0-0 cb5 (9...0-0 10.Nc3=) 10.ab5+= 0-0 11.Bf6 (11.Nc3 a6+=) 11...Bf6 12.d4 Nd7 13.Nbd2 e5 14.de5 (14.Qb3 Kh8+=) 14...de5= 15.Rc1 (15.Qc2!?=) 15...Nc5-/+ Black prepares e4 16.Re1 (16.Nb3 Qd1 17.Bd1 Bf3 18.gf3 Nd3=+) 16...e4 17.Nd4 Qd6 (better is 17...Bd4 18.ed4 Qd4-/+) 18.Nf5= Qe5 19.Ng3 Rad8 (19...a6 20.Nb3=) 20.Qc2 Bh4 21.f3 (better is 21.Rf1+=) 21...Bg3-/+ 22.hg3 Nd3 (22...Qg3 23.Nf1 Qg6 24.f4-/+) 23.f4 (23.Bd3 Rd3 24.Ne4 Be4 25.fe4 Qg3=) 23...Qc5 (better is 23...Ne1!? 24.Re1 Qe7-/+) 24.Bd3= ed3 25.Qc3 Qh5 (better is 25...Rfe8 26.Kf2 Be4=) 26.Nf3?? (better is 26.Ra1+=) 26...Bf3-+ 27.gf3 d2 (worse is 27...Qf3 28.Qd2 Qg3 29.Qg2 Qg2 30.Kg2-+) 28.Rcd1 (28.Kg2 dc1R 29.Qc1 Rf6-+) 28...de1Q (better is 28...de1R 29.Qe1 Qf3 30.Rd4-+) 29.Re1 (29.Qe1 Qf3 30.Rd4-+) 29...Qf3 30.Kh2 (30.Qc2 Qg3 31.Kf1 Qf3 32.Qf2 Qh1 33.Qg1-+) 30...Rf6 31.g4 (31.Qf6 Rd2 32.Kh3 gf6 33.Re2 Re2 34.c5 Qh5) 31...Rh6 32.Kg1 Rh1 0-1. AleksandrNekhoroshik (1700) - Ztros (1645), lichess.org, 2021.

3.c4 e5 4.e3 d6 5.d4 Nd7 6.d5 Ngf6 7.Bb2 Be7 8.Be2 0-0 9.Nf3 Qe8 10.Nbd2 Nc5 11.a4 e4 12.Nd4 Ng4 13.Bg4 fg4 14.Nc6 Nd3 15.Ke2 Nb2 16.Qc2 Nd3 17.Ne4 Ne5 18.Ne5 de5 19.Rhe1 Bf5 20.f3 gf3 21.gf3 Qh5 22.Rh1 Bc5 23.Rag1 Qh6 24.f4 Qh5 25.Kd3 Qf3 26.Qg2 Qe3 27.Kc2 Be4 0–1. A_VB – shivanm655, lichess.org, 2018.

3.e3 Bb7 4.Bb2=.

3.e3 d5 4.c3 (better is 4.Nf3+=) 4...h6 (better is 4...a6=) 5.a4 (better is 5.Qh5!? Kd7 6.Qf5 e6 7.Qf7 Qe7 8.Qe7 Ne7 9.d4+/–) 5…g5 (5...Nf6!?=) ½–½. wallsofsteel – Flucku, Live Game Caissa's Web, 2004.

3.e4 fe4 4.Qh5 g6=.

4.e3 d6 5.Nf3 (5.Bf6 ef6 6.Qh5 g6+/-) 5...Bb7 (5...e5 6.Bc4=) 6.a4 Nbd7 (6...a6!?+=) 7.Nd4+/- g6 8.Ne6 Qc8 9.h3 (9.a5 ba5 10.Ra5 Bh6+=) 9...Bh6+= 10.g4?? (better is 10.a5+=) 10...fg4 (10...Bh1 11.f4 fg4 12.hg4-+) 11.hg4?? (11.Rh2 Ne5 12.Nd4 Bg7-/+) 11...Ne5 (better is 11...Bh1 12.g5 Nf8 13.gf6 Ne6-+ (13...Qe6?! 14.f7 Qf7 15.Bh8-/+)) 12.g5? (12.Nc7 Qc7 13.Rh6 Nf3 14.Ke2 Qc4 15.d3 Qg4 16.Nd2-+) 12...Qe6 (12...Nf3 13.Ke2 Ng5 14.Ng5 Bh1 15.Bh3-+) 13.Rh6 Nf3 14.Ke2 Ng5 15.Qc1 Qg4 16.Kd3 Be4 (16...Qf5!? 17.Ke2 Qf3 18.Kd3-+) 17.Kc3 Nd5 18.Kb3 Bf5?? (18...e5!?-+) 19.c4?? (better is 19.Bh8 Qb4 20.Ka2 Qa4 21.Na3 Bc2 22.Rb1 Bb1 23.Kb1+/-) 19...Nf6-/+ 20.Bh3?? (20.Nc3 Nf7 21.Rh2=+) 20...Nh3-+ 21.Bf6 ef6 22.Qh1 Nf2 (better is 22...Rc8 23.f3 Qg3-+) 23.Qa8= Kd7 24.Qc6 Kc8 (24...Ke6 25.Nc3 (25.Qc7 Qd1 26.Kb4 Nd3 27.Kc3 Nc1 28.Qc8 Rc8 29.d3 Qd3 30.Kb2 Qc2 31.Ka3 Qb3) 25...Ne4 26.Qd5 Ke7 27.Rah1=) 25.Nc3 Be6? (25...Be4 26.Ne4 Qe4 27.Qe4 Ne4 28.Kc2=) 26.Nd5?? (better is 26.Rh2 Nd3 27.Nd5 Nc5 28.Kb2 Bd5 29.Qd5=) 26...Bd5= 27.cd5 Nd3 28.Qc4 (28.Rah1 Nc5 29.Kc3 Kb8 30.Rh7 Rc8+=) 28...Nc5=+ 29.Kc3 Ne4 30.Kc2 Qg2 31.Rd1 Nc5 (31...Kb8 32.Rh4 Nc5 33.Qd4=) 32.Rhh1 (32.Rdh1 Re8 33.R6h2 Qg5 34.Rh7 Re4=+) 32...Re8 (32...Qg5=) 33.Rhg1 (33.Rdg1!? Re4 34.Rg2 Rc4 35.Kb2 Rb4 36.Kc3 Ra4 37.Rh7=) 33...Qh3 (33...Re4!? 34.Qc3 Qe2-/+) 34.Qg4 Qg4 35.Rg4 f5 (35...a5 36.Rh1 Re7 37.Rgh4=) 36.Rh4 h5 (better is 36...Re4!? 37.Re4 Ne4= (worse is 37...fe4 38.Rh1+/-)) 37.Rg1+/- Re5 (37...Re4!? 38.Re4 fe4 39.Rg6 Na4+/-) 38.Rg6+- Rd5 39.Rh5 Na4 40.Rg8 Kb7 41.Rf8?? (better is 41.Rh4+-) 41...Rb5= 42.Rff5 Rc5 43.Rc5 Nc5 44.d4 Ne4 45.Rh7 (45.Kd3 Nf2 46.Ke2 Ng4=) 45...Nf6 (better is 45...b5!?-/+) 46.Rf7= Nd5 47.e4 Nb4 48.Kc3 Na6 (48...Nc6 49.Rf5=) 49.e5 (49.Rh7 Kc6+=) 49...de5= 50.de5 Nc5 (50...Kc6 51.Kd4=) 51.Kd4 a5 52.Kd5 a4 (52...Kc8!?+=) 53.e6+/- Ne6 54.Ke6 Kc6 55.Rf1 Kb5? (55...Kc5 56.Kd7 a3+=) 56.Kd5?? (better is 56.Kd7+-) 56...c5?? (better is 56...a3+=) 57.Rb1+- Ka5 58.Kc4 a3 (58...Ka6 59.Ra1 Ka5+-) 59.Ra1 (better is 59.Rb3 Ka6 60.Ra3 Kb7 61.Rh3+-) 59...Ka4= 60.Ra2 b5 61.Kc5 b4 62.Kc4 b3 63.Rh2 a2 64.Rh8 Ka3 65.Kc3 (65.Kc3 a1Q 66.Kd3 Qh8 67.Ke3 b2 68.Ke4 b1Q 69.Kd5 Qd3 70.Ke6 Qe8 71.Kf6 Qdg6) 1-0. chessbit (1935) - saedede (1920), Rated Rapid game, lichess.org, 2020.

4.Nf3 e6 5.g3 Be7 6.Bg2 d5 7.Ne5 Bb7 8.c4 Nbd7 9.Nc6 Bc6 10.bc6 Nb8 (10...Nc5 11.cd5 ed5 12.Qc2=) 11.cd5+= ed5 12.0-0 (12.Qc2 a6+=) 12...0-0 (12...Nc6 13.Qc2 Nb4 14.Qf5=) 13.Nc3 Ne4 (13...Nc6 14.Nd5 Nd5 15.Qb3+/-) 14.Ne4 (14.Qb3 Bf6 15.Nd5 Bb2 16.Ne3 Kh8 17.Qb2 Qd2 18.Qd2 Nd2+-) 14...fe4 15.e3 (15.d3 Bf6 16.Bf6 Qf6 17.de4 de4 18.Be4 Kh8+/-) 15...Nc6 16.Qg4 (better is 16.d3 Bf6 17.Bf6 Qf6 18.de4 de4 19.Be4+=) 16...Bf6-/+ 17.Qe6 Kh8 18.Bf6 (better is 18.Qc6!? Bb2 19.Rab1=+) 18...Rf6-+ (worse is 18...Qf6 19.Qd5 Rae8 20.Be4+/-) 19.Qg4 Ne5 20.Qh3 (20.Qe2 Qf8-+) 20...c5 21.Rac1 Qf8 22.Rc3 (22.Qh5 Rf5 23.Qe2 Qf7-+) 22...Nd3 (better is 22...Rh6 23.Qh6 gh6-+) 23.f4 Rd8 24.Rb1 Rdd6 (24...Rh6 25.Qg4-+) 25.a4 (25.Bf1 Rh6 26.Qg4 d4-+) 25...a5 (25...Rh6 26.Qg4-+) 26.Bf1 Nb4 27.d4 c4 28.Be2 Rh6 29.Qg2 Nd3 30.Bg4 Rhf6 31.h4 (31.Qh3 Qf7-+) 31...h6 32.Bh3 (32.h5 g6-+) 32...g6 (32...Qe8 33.Qc2-+) 33.Rb5 Ne1 (33...Qg7!? 34.Qe2-+) 34.Qf1 Nf3 35.Kf2 Qg7 (35...Qg8 36.Qh1-/+) 36.Bg2=+ g5 (36...Nh2 37.Qe2=+) 37.Bf3 ef3 (37...gf4 38.gf4 ef3 39.Qh3=+) 38.hg5= (38.hg5 hg5 39.Kf3=+). Zpytasz (1805) - yodaconqueror (1785), Rated Rapid game, lichess.org, 2020.

4.g3 e6 5.Bg2 c6 6.a4 Bb4 7.Nc3 0-0 8.Nh3 Ne4 (8...d5!?=+) 9.Ne4+= fe4 10.Be4 d5 11.Bd3?? (11.Bg2 a6+=) 11...Nd7?? (better is 11...e5-+) 12.bc6+/- Nc5 13.0-0 (13.Be5 d4 14.f4 Qd5+/-) 13...Qd6 (13...e5 14.Kg2=) 14.e3 (better is 14.Bb5 e5 15.Ng5+=) 14...Qc6?? The isolani on a4 becomes a target (better is 14...e5 15.Qh5 e4=) 15.Qh5+- Na4?? (15...Nd3 16.Ng5 Rf5 17.Qh7 Kf8 18.Qg7 Ke8 19.cd3 Qd6+-) 16.Qh7 (16.Bh7 Kh8 17.Bg6 Kg8 18.Qh7) 16...Kf7+- 17.Qg7 (better is 17.Bg7 Ke8 18.Rfb1 a5 19.Bf8 Kf8+-) 17...Ke8 18.Bg6 Kd8 19.Bf6 (19.Ba3!? Ba3 20.Ra3 Rf3+-) 19...Rf6 20.Qf6 Kd7 (20...Be7 21.Qh8 Kc7 22.Qe5 Bd6 23.Qg7 Qd7 24.Qf6+-) 21.Qf7 Kd6 (21...Kd8 22.Qf4 a5+-) 22.Qf4 (22.Qf8 Kc7 23.Qb4 Bd7+-) 22...e5 23.Qb4 Qc5 (23...Nc5 24.Qh4 Bh3 25.Qh3+-) 24.Qa4 (better is 24.Qh4 Bh3 25.Qh3 Nb2+-) 24...b5 (24...Bh3 25.Rfb1 Qc6+-) 25.Qh4 Bh3 26.Qh3 Rg8 27.Ra6 Ke7 28.Qh7 Kf8 (28...Kd8 29.Bf5 Qe7 30.Qg8 Qe8 31.Qd5 Ke7 32.Qe5 Kf7 33.Ra7 Qe7 34.Qe7 Kg8 35.Qd8) 29.Qf7 1-0. Zpytasz (1740) - oscarlysgard (1610), Rated Rapid game, lichess.org, 2017.

4.Bb2 Nf6 5.Nc3 g6 (5...a6 6.e3=) 6.e3 Bg7 7.Nf3 0-0 8.Be2 d6 9.0-0 Nbd7 (9...a6!?+=) 10.Ng5+/- e5 (10...Nc5!? 11.d4 h6 12.dc5 hg5+/-) 11.Ne6+- Qe7 12.Nf8 Qf8 13.Bf3 e4 14.Be2 Nc5 (14...Ne5 15.f3+-) 15.d4 (15.Qc2 Qf7+-) 15...Ne6 (15...ed3 16.Bd3 a6 17.Be2+-) 16.d5 Nc5 17.a4 a6 18.a5 ab5 19.Nb5 ba5 20.Nc7 Ra7 21.Nb5 Ra8 22.Ba3 (22.Bd4 Bc8+-) 22...Ba6 (22...Nfd7 23.Ra2 Be5+-) 23.Nc7 Ra7 24.Ne6 (24.Bc5!? Rc7 25.Bb6 Rb7 26.Ba5 Nd7+-) 24...Ne6 25.de6 Qe7? (better is 25...Ne8 26.Rb1 Qe7+-) 26.Bd6 Qe6 27.c5?? (better is 27.Ra5 Ne8 28.Bf4+-) 27...Be2 (27...Ne8 28.Ba6 Ba1 29.Qe2+/- (29.Qa1?! Ra6 30.Be5 a4=)) 28.Qe2+- Ne8 29.Qb5 (29.Bb8!? Ra8 30.Rab1+-) 29...Ba1+/- 30.Ra1 (better is 30.Bb8 Ra8 31.Ra1+/-) 30...Nd6=+ 31.cd6 Rd7 (better is 31...Qd6!? 32.Qe8 Kg7-/+) 32.Ra5 Qd6 33.g3 Kf7 34.Qb3 Ke7 35.Qg8 Qd1 36.Kg2 Qf3 37.Kh3 Qg4 (37...Kf6 38.Ra6 Kg5 39.Qe6 Qg4 40.Kg2=) 38.Kg2= Rd8?? (better is 38...Kf6 39.Ra6 Kg5=) 39.Ra7 (39.Qg7 Ke6 40.Qe5 Kd7 41.Rd5 Kc6 42.Rc5 Kb7 43.Qc7 Ka8 44.Ra5) 39...Rd7 40.Qh7 Kf6 (40...Kd6 41.Qd7 Kc5 42.Qc7 Kd5 43.Ra5 Ke6 44.Re5 Kf6 45.Qe7) 41.Rd7 (41.Ra6 Ke5 42.Qh8 Rg7 43.Qg7 Kd5 44.Qd4) 41...Qf3 42.Kg1 (42.Kg1 Qg2 43.Kg2 f4 44.Qe7 Kf5 45.Rd5 Kg4 46.h3) 1-0. Zpytasz (1785) - kazard (1835), Rated Rapid game, lichess.org, 2016.

4.Nc3 c6 5.a4 c5 6.Bb2 Nf6 7.e3 e6 8.Nf3 Be7 9.Ne5 (9.Be2 0-0=) 9...0-0 10.f3 d6 11.Nd3 h6 (11...a6 12.Be2=) 12.Be2 d5 13.Nf4 dc4?? (better is 13...Qd7+=) 14.Ne6+- Qd6 15.Bc4 Rd8 (15...Kf7 16.Qc2 g6+-) 16.Nd8 (16.Nd8 Kh7 17.Nb7+-) 1-0. Zpytasz (1835) – zewna, Rated Rapid game, lichess.org, 2016.

4.Nc3 Nf6 5.Nf3=.

4.Nc3 g6 5.Bb2 Bg7 6.e3 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 Nc6?? (better is 9...Nf6=) 10.bc6+- Bc6 11.Be2?? (better is 11.Nd5 Nf6 12.Be5+-) 11...Bg2= 12.Bf3 Bh1 13.Bh1 c5 (13...Nf6!?=) 14.Nd5+= e6?? (14...Nf6 15.Qa7+=) 15.Nf4 (better is 15.Bg7 ed5 16.Bd5+-) 15...e5? (better is 15...Nf6=) 16.Be5+- Be5?? (better is 16...Nf6+-) 17.Qe5 Qe7 18.Qh8 Kf7 (18...Kf8+-) 19.Bd5 Kf8 20.Qg8 1-0. Zpytasz (1710) – mursit, Rated Rapid game, lichess.org, 2016.

4.Nf3 Nf6 5.Nd4 (5.Bb2 e6=) 5...e6=+ 6.Bb2 Be7 7.Qb3 0-0 8.h4 (8.Qd3 a6=+) 8...c5 9.bc6 dc6?? (9...Nc6 10.Nc6 Bc6 11.h5-/+) 10.h5?? (better 10.Ne6 Qd7 11.Nf8 Kf8 12.d4+-) 10...Bc8 11.h6 g6 12.Na3 (12.Nf3 Bd6=+) 12...Bc5 13.e3 Ne4 (better 13...e5 14.Nf3 e4=+) 14.0-0-0?? (better 14.d3 Nf6 15.Nf3=) 14...Nf2-+ 15.Rh3 (15.Be2 f4-+) 15...Nd1 (15...e5 16.Ndc2 Nd1 17.Kd1-+) 16.Qd1 Ba3 (better 16...f4 17.Rf3 e5-+) 17.g4 (17.Ba3 Re8 18.Nb5 cb5 19.Qf3-+) 17...Bb2 18.Kb2 c5 (better 18...e5 19.Nb3 fg4 20.Rg3-+) 19.gf5 cd4 (better 19...ef5 20.Bg2 f4 21.Rh1 cd4 22.Ba8 fe3 23.de3 de3 24.Bd5 Kh8 25.Qd4 Qf6 26.Qf6 Rf6 27.Re1 Rf2 28.Kc3-+) 20.fg6 (20.Bg2 de3 21.Re3 Qd4 22.Rc3 Rf5 23.Ba8 Rf2-+) 20...hg6 (better 20...de3 21.gh7 Kh8 22.Re3 Qf6 23.Rc3-+) 21.Qg4 (21.Bg2 de3 22.Ba8 Qd4 23.Ka3 Rd8-+) 21...Kh7 (21...Rf1 22.Qg6 Kf8 23.h7+-) 22.Rg3 (22.Bd3 Rf6 23.Rg3 Qe8-+) 22...Qf6 23.Kb3 (23.Bd3 de3 24.Kc2 Rg8-+) 23...Nc6 (23...e5 24.Qe4 Nc6 25.ed4-+) 24.Bg2 (24.Bd3 Rg8 25.Be4 e5-+) 24...Ne5 (24...e5 25.Qe2-+) 25.Qd4 Rb8 (better 25...Rd8!? 26.Rf3 Qf3 27.Qd8 Qd1 28.Kc3 Qc1 29.Kb3 Qc4 30.Ka3-+) 26.Qd6 Bd7 (26...Ba6 27.Qc7 Rf7 28.Rg6 Qg6 29.Qe5 Bc4 30.Kc4 Rc8 31.Kd4 Rd7 32.Bd5 Rd5 33.Qd5 ed5 34.d3 Qf6 35.Kd5 Rc5 36.Ke4 Qf5 37.Kd4 Qe5) 27.d4 Nc4! (worse 27...Kh6 28.de5 Qd8 29.Be4-+) 28.Qd7 (28.Kc4 b5 Double attack) 28...Rf7 29.Qc6 (29.Qb5 Na5 30.Ka3 Qe7 31.Ka4-+) 29...Na5 30.Ka4 Nc6 31.Bc6 e5 (31...Qf1 32.Kb4 b5 33.Bb7 Qc4 34.Ka5 Qa4) 32.Bd5 Re7 33.Rh3 ed4 34.ed4 Qd4 (34...Qd4 35.Kb5 a6 36.Ka6 Qa4) 0-1. youtoo - toto56 (1805), Rated Classical game, lichess.org, 2014.

3.a4 cb5 4.ab5 d6 5.Bb2 e5 6.Nf3 f4 (6...Nf6 7.Nc3=) 7.g3 g5 8.Bg2 a6 9.0-0 Nf6 (9...g4 10.Ne1 fg3 11.fg3 Qb6 12.e3 Qb5 13.Nc3+=) 10.Ng5 Bg7 (10...fg3 11.hg3 Rg8 12.Nf3=) 11.e3 (11.gf4 ef4 12.Ra4+/-) 11...Ng4? (better is 11...Bg4 12.Bf3 h6+/-) 12.ef4+- Qf6 (12...Qb6 13.Nc3 h6 14.Nge4+-) 13.Ne4 Qe6 (13...Qd8 14.h3 d5 15.Ng5+-) 14.Bh3 (14.f5 Qd7 15.Qg4 0-0+-) 14...Qh6?? (14...0-0+-) 15.Bg4 Bg4 (15...Bd7 16.fe5 de5 17.Nbc3+-) 16.Qg4 Rg8 (16...0-0+-) 17.Qc8 Kf7 18.Qb7 Nd7 19.Qd7 Kf8 20.Qd6 (better is 20.Ra6 Ra6 21.ba6+-) 20...Qd6 21.Nd6 ef4 22.Bg7 Rg7 23.Ra6 (23.b6 Rd7 24.b7 Rb8 25.Ra6 Rd6 26.Rd6 Rb7 27.Rf6 Rf7 28.Rf4 Rf4 29.gf4 Kf7+-) 23...Rd8 24.Nf5 (24.c4!? Rg5+-) 24...Rf7 25.Nd6 Rf6?? (25...Rg7 26.c4 Rg5+-) 26.Ne4 (better is 26.Nb7 Ra6 27.ba6 Ra8+-) 26...Rf7 27.Rf6 (27.Ng5 Rb7 28.Ne6 Ke8 29.Nd8 Kd8+-) 27...Rdd7 28.Rf7 Rf7 29.d3 f3 30.Ng5 Rf6 31.Nh7 (31.Nh7 Ke8 32.Nf6 Ke7 33.Re1 Kd6 34.h4 Kc5 35.d4 Kb5 36.Re5 Kb4 37.Nd5 Kb5 38.h5 Kc6 39.c4 Kb7 40.Re7 Kc6 41.Nd2 Kd6 42.Ne4 Kc6 43.Rc7) 1-0. Zpytasz (1725) - Sarabande (1650), Rated Rapid game, lichess.org, 2017.

3.a4 e5 4.Bb2 d6 5.g3 Nf6 6.Bg2 Be7 7.Nf3 0-0 8.0-0 e4 9.Nd4 c5 10.Nb3 Nbd7 11.d3 d5 12.de4 fe4 13.e3 (13.c4 Nb6 14.cd5 Bf5=) 13...Qc7 14.N1d2 (14.Nc3 Qe5=+) 14...Ne5 (14...c4 15.Bf6 Nf6 16.Nd4-/+) 15.Be5 (15.c4 Nc4 16.Nc4 dc4=) 15...Qe5-/+ 16.c4 Be6 17.Qc2 Rf7 18.cd5 Bd5 19.Nc5? (better 19.Rae1=+) 19...Raf8?? (better 19...Rc8 20.Nd7 Rc2 21.Ne5 Rd2 22.Nf7 Kf7-/+) 20.Nce4+- (20.Nde4?! Rc8 21.f4 Be4 22.Ne4 Rc2 23.fe5 Rg2 24.Kg2 Ne4+=) 20...Ne4 21.Ne4 Be4? (better 21...Qe6!?+-) 22.Be4 Bf6 (22...Rf2 23.Rf2 Qa1 24.Kg2 Rf2 25.Kf2+-) 23.Bh7 Kh8 24.Rad1 Rc7 25.Qg6 (25.Qf5 Qf5 26.Bf5 Rc4+-) 25...Rcf7 (25...Rc4 26.Qf5 Qf5 27.Bf5 Ra4+-) 26.Qc2 (26.e4!? Rc7+-) 26...Rc7 27.Qb1 (27.Qf5 Qf5 28.Bf5 Rc4+-) 27...Qh5 (27...Rc4 28.Bc2+-) 28.Bc2 (28.Bg6 Qg4+-) 28...Rfc8 29.Be4 Re7 (29...Qe8 30.Bg6 Qe5 31.Qf5 Qf5 32.Bf5+-) 30.Rd5 Qh3 1-0. Zpytasz (1650) - mannuly7 (1820), Rated Rapid game, lichess.org, 2017.

3.a4 e6 4.c4 a5 5.Ba3 Ba3 6.Ra3 d5 7.e3 Nf6 8.Nf3 Qc7 9.d4 dc4 10.Ne5 cb5 11.ab5 Nd5 12.Bc4 Nd7 13.Qh5 g6 14.Ng6 N7f6 15.Qh4 Qc4 16.Nh8 Qb4 17.Rc3 Qb1 18.Kd2 Ne4 19.Ke2 Ndc3 20.Kf3 Nd2 21.Kg3 Nce4 22.Kf4 Qh1 23.Qh5 Kd8 24.Nf7 Kc7 25.Qh7 Qg2 26.Ne5 Kb6 27.Qh4 Kb5 28.f3 Nf2 29.Qe7 Nh3 0-1. poputchik - Koen (1680), Rated Classical game, lichess.org, 2014.

3.a4 Nf6 4.Bb2 e6 5.g3 d5 6.Bg2 Be7 7.Nf3 0-0 8.0-0 Qb6 9.d3 (9.Ba3 Re8=) 9...cb5=+ 10.ab5 Qb5 11.Be5 (11.Bd4 a5=+) 11...Nc6 12.Nc3 Qb6 13.Na4 Qd8 14.d4 Ne4 15.Bf4 (15.Qd3 g5-/+) 15...g5-+ 16.Be5 (16.Be3 Bf6 17.Qd3 g4-+) 16...g4 (16...Ne5?! 17.Ne5 Qc7 18.Be4 fe4 19.c4-/+) 17.Nd2 b5 18.Nb2 Nc3 19.Qe1 Qb6 (19...Ne5 20.de5 Qc7 21.Nd3-+) 20.Nb3 b4 (20...Ne5?! 21.Qc3 Nc6 22.Qe3-/+) 21.Nd3 a5 22.Nbc5 (22.f4 Ba6 23.e3 a4-+) 22...Nd4?? (better is 22...Ne5 23.Ne5 Bc5 24.dc5 Qc5-+) 23.Bd4+/- 1-0. Zpytasz (1690) - Olly23 (1850), Rated Rapid game, lichess.org, 2016.

3.c4 cb5 4.cb5 Nf6 5.f3 (5.Bb2 e6=) 5...e5 6.Qb3 (6.Bb2 d6=+) 6...d5 7.Bb2 Bd6 8.Nh3 e4 (8...Nbd7 9.d4-/+) 9.Bd4 ef3 (9...Nbd7 10.Qe3=+) 10.ef3 0-0 11.Nc3 Attacks the isolani on d5 11...Re8 (11...Qe7 12.Kd1=) 12.Be2 Be6 (12...Kh8=) 13.Qc2 (13.Ng5!?+=) 13...a6 (13...Nh5 14.a4=+) 14.a4 (14.Ng5 Bc8=+) 14...a5 (14...ab5!? 15.Nb5 Nc6=+) 15.Ng5= Nbd7 (15...Bc8 16.Qb3 Be5 17.Be5 Re5 18.f4=) 16.Ne6+= Re6 17.Qf5 Qe8 18.Kf2 Rc8 19.Nd5?? (better 19.Rae1 Be5 20.Be5 Re5 21.Qf4=) 19...Re2-+ 20.Kf1 Rd2 21.Re1 (21.Nf6 Nf6 22.Re1-+) 21...Qh5 (better 21...Rc1! 22.Nf6 Nf6-+) 22.Nf6+- Nf6 Do you see the mate threat? 23.Qh5?? (better 23.Qc8 Bf8 24.Bc3+-) 23...Nh5-+ 24.Bf2 (24.Be3 Ra2 25.g4 Nf4-+) 24...Rc4 (24...Rcc2 25.Be3 Rg2 26.Rc1-+) 25.g3 (25.Be3 Rd5-+) 25...Ra4 26.Kg2 (26.f4 Raa2 27.Be3 Rdb2-+) 26...Raa2 27.Rhf1 Bc5 28.Re5 Bf2 29.Rh5 Bb6 30.Kh1 h6 31.Re1 Bf2 32.Re7 (32.Rc1-+) 32...Ra1 (32...Be3! 33.Re8 Kh7 34.Rh8 Kh8 35.Rh6 gh6 36.f4 Rh2) 33.Kg2-+ Bc5 (33...Bc5 34.Kh3 Be7-+) 0-1. lindsey000 – detroitlions, gameknot.com, 2018.

4.Bb2 e5 5.Be5 d6 6.Bf4 cb5 (6...Be7 7.Nc3+/–) 7.Bb5+/– Nc6 8.c3 (8.Nf3 Be7+/–) 8...a6 9.Bc4 (9.Be2 Be6+=) 9...Ne4 (9...Ne5 10.Be2+/–) 10.Qb3 (better is 10.d3 Nc5 11.Bd5+/–) 10...b5? (10...Qe7 11.d3 Nc5 12.Qd1+=) 11.Bd5 (11.Bf7 Ke7 12.Nf3 Qd7+–) 11...Na5 (better is 11...Qc7!?+/–) 12.Bf7+– Kd7 (12...Ke7 13.Qd5 Qd7 14.Qa8+–) 13.Qe6 (better is 13.Qd5!? Nb7 14.Qf5 Ke7 15.Qh5+–) 13...Kc7+/– 14.Qd5 Nc6 15.Nf3 b4 16.Nd4 bc3?? 17.Qc6 Kb8 18.Ne6 cd2 19.Nd2 Qa5 20.Rb1 Ka7 21.Rb2 Rb8 22.Qc7 Rb7?? 23.Qa5 Rb2 24.Ne4 fe4 25.0-0 Bd7 26.Qc7 Ka8 27.Bd6 Bd6+– 28.Qd6 Rhb8 29.Qd7 Ra2 30.Nc7 Ka7 1–0. solidsteel – floydwe1, Live Game Caissa's Web, 2005.

4.Bb2 e6 5.a4 d5 6.Nf3 Be7 7.Ne5 0-0 8.Be2 c5 9.c4 d4 (9...Nbd7 10.0-0=) 10.ed4 cd4 11.Bf3 (11.f4 a6+=) 11...Bc5 12.Nd3 (12.Qe2 Qd6=) 12...Be7 (better is 12...Nbd7!?=) 13.0-0 a6 14.Nf4 (better is 14.Na3!?+/-) 14...ab5 15.cb5 e5 (better is 15...Bd6 16.Nh5 Nh5 17.Bh5 Qf6=+) 16.Bd5?? (better is 16.Qb3 Kh8 17.Ne6 Be6 18.Qe6=) 16...Nd5-+ 17.Qb3 (17.Nd5 Qd5 18.d3 Be6-+) 17...ef4 18.Qd5 (18.Re1 Kh8 19.Bd4-+) 18…Qd5 0-1. Zpytasz - Viot (2190), Rated Rapid game, lichess.org, 2017.

3.a4 e5 4.c4 Bc5 5.Ba3 d6 6.e3 Bb6 7.Nc3 0-0 8.Qb3 Kh8 9.Nge2 Qe7 10.Ng3 f4 11.Nge4 Ne4 12.Ne4 fe3 13.de3 a6 14.h4 Be6 15.0-0-0 ab5 16.Nd6 b4 17.Qb4 Na6 18.Qb5 Rf2 19.Kb1 Ba7 20.Qb7 Rb8 21.Nf7 Qf7 22.Qb8 Nb8 23.Rd8 Qg8 24.Rg8 Kg8 25.Bd3 Na6 26.Rd1 Be3 27.Be4 Bd4 28.Bd5 Kf7 29.Rd3 c6 30.Be4 Bc4 0–1. Susanna – Cappello, corr 1962.

3.a4 g6 4.Ba3 Bg7 5.c4 d6 6.f3 (6.Bb2 0-0=+) 6...c6 7.h3? (7.d4 0-0=+) 7...Qb6 (better is 7...Ne4!? 8.fe4 Ba1–+) 8.Nc3 Be6 9.e3 Nbd7 10.d4 c5 11.d5 Bf7 (11...Qa5 12.Rc1 Nd5 13.cd5 Bc3 14.Kf2 Bf7–/+) 12.g4? (12.Bb2!?=) 12...fg4 (12...Qa5 13.Qd2 Ne4 14.Ne4 Qd2 15.Kd2 Ba1 16.gf5 gf5 17.Ng5–+) 13.hg4 0-0 (13...Qa5!? 14.Qd2 Nh5–/+) 14.Ra2 Ng4 15.fg4? (better is 15.Qd2 Ngf6 16.a5 Qa5 17.Bc5=+) 15...Bc3–+ 16.Kf2?? (16.Ke2–+) 16...Bd5 (17.Nf3 Bf3 18.Qf3 Ne5 19.Qf8 Rf8 20.Kg1 Qa5–+) 0–1. rum – ox111, Live Game Caissa's Web, 2004.

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.b5).

3.c4 a6 4.Bb2 ab5 5.cb5 d6 6.e3 e5 7.Nc3 Be6 (7...d5 8.d4 e4 9.Nge2=+) 8.g3 (8.Nf3 Be7=) 8...Be7 9.Bg2 c6 10.a4 0-0 11.Nge2 d5 Black intends e4 12.0-0 Nbd7 (12...Qd7 13.d4 e4 14.Ba3=) 13.f4= e4 (13...d4 14.ed4 e4 15.d3+=) 14.Nd4+= Kf7 15.bc6 bc6 16.Nc6 (16.Ne6?! Ke6 17.Ne2 c5=) 16...Qb6 17.Ne7 Qb2 18.Nc6 Nc5 19.Nd4 Nd3 (19...Qb6 20.Qc2+/-) 20.Ncb5 (better is 20.Rb1!? Qa3 21.Rb7 Bd7 22.Nd5+-) 20...Bd7+= 21.Rb1 Qa2 22.Ra1 Qb2 23.Rb1 Qa2 24.Ra1 (24.Nd6 Kg8 25.Ra1 Qb2+=) 24…Qb2= ½-½. Zpytasz (1805) - sniperchess (2110), Rated Rapid game, lichess.org, 2016.

3.c4 d6 4.a4 (4.d4 Nbd7=) 4...e5=+ 5.Bb2 Be7 6.e3 0-0 7.Nf3 c6 8.Be2 Ng4 (8...e4 9.Nd4=) 9.0-0= e4 10.Ne1 Bf6 11.Nc3 Bc3 12.Bc3 Qh4 13.h3 Ne5 14.f4 ef3 (14...Ned7 15.d4+=) 15.Nf3 Nf3 16.Bf3 (16.Rf3!? Be6 17.Rf4+=) 16...Qc4= 17.Qc2 Nd7 (17...Rf7 18.Rab1=) 18.d3 (18.Qb2 Rf7=) 18...Qe6= 19.Rae1 (19.bc6 Qe3 20.Kh2 bc6 21.Bc6 Rb8+/-) 19...d5 (19...cb5 20.ab5 Ne5 21.Be5 de5 22.Qc7=+) 20.e4 fe4 21.de4 de4 (21...cb5 22.ed5 Qb6 23.Kh1 ba4 24.Bg7 Kg7 25.Re7 Rf7 26.Rf7 Kf7 27.Qh7 Ke8 28.Re1 Kd8 29.Qg8 Kc7 30.Rc1 Nc5+-) 22.Re4+/- Qf5 23.Qb3 Kh8 24.Rg4 (24.Qa3 Qc5 25.Qc5 Nc5 26.Re7+-) 24...Nf6= 25.Rg3 (25.Rd4 Be6 26.Qa3 Nd5+= (worse is 26...cb5 27.Bb7 Qg5 28.Ba8 Ra8 29.ab5+-)) 25...Qc5 (25...Nh5 26.Rg4 cb5+=) 26.Kh1?? (26.Kh2 Qb6=) 26...Qf5?? (better is 26...Nh5 27.Be1 cb5 28.Qb5 Qb5 29.ab5 Ng3 30.Bg3 Rf7-+) 27.Be2 Qd7?? (27...Qe6!? 28.Qb4 Bd7=) 28.bc6 (28.Bf6 Rf6 29.Rf6 Qd8+-) 28...bc6?? (28...Qc6 29.Qa3 Rf7 30.Bh5+-) 29.Qb2 (better is 29.Rf6 Ba6 30.Rf8 Rf8 31.Ba6+-) 29...Qd6 30.Rgf3 Qd5?? (better is 30...Rb8 31.Qa1 Qe6+/-) 31.Rf6 (31.Bf6 Rf6 32.Rf6 Be6 33.Rf8 Rf8 34.Rf8 Bg8+-) 31...Rf6 32.Bf6 Bh3 33.Bg7 Kg8 34.Bf3 (34.Rf3 Be6 35.Rg3 Kf7 36.Qb7 Ke8 37.Qa8 Ke7 38.Qf8 Kd7 39.Bf6 Qd1 40.Bd1 Kc7 41.Rg7 Bd7 42.Qd8 Kd6 43.Qd7 Kc5 44.Qd4) 34...Qc4 35.Qf2 (35.Bh8 Qf1 36.Kh2 Kf7 37.Qf6 Ke8 38.Bc6 Bd7 39.Qe6 Kf8 40.Qd6 Kg8 41.Bd5 Be6 42.Be6 Qf7 43.Qe7 Kh8 44.Qf7 h6 45.Qg6 Rd8 46.Qh6) 35...Kg7 36.gh3 Rf8 (36...Qc3+-) 37.Qg2 (37.Qg3 Kf7 38.Bd5 Ke8 39.Re1 Kd7 40.Bc4 h5 41.Rd1 Ke7 42.Qe5) 37...Kh8 38.Qe2 (38.Qb2 Kg8 39.Rg1 Kf7 40.Qg7 Ke8 41.Re1 Kd8 42.Rd1 Qd5 43.Bd5 cd5 44.Rd5 Kc8 45.Qd7 Kb8 46.Rb5 Ka8 47.Qc6) 38...Qh4? (38...Qe2 39.Be2 Rf1 40.Bf1+-) 39.Kh2 (better is 39.Qe5!? Qf6 40.Qc5 Qh6+-) 39...Qf4 40.Kh1 c5?? (40...Qh4 41.Qe5 Qf6+-) 41.Qb2 (better is 41.Bg2 Qb8 42.Rf8 Qf8 43.Qe5 Qg7 44.Qc5 Qa1 45.Kh2 Qf6 46.Qa7 Qe5 47.Kh1 Kg8+-) 41...Qf6 42.Qf2 Qf4 (42...Qf4 43.Qc5 Qh6+-). KLINGON09 (1760) - artan1974 (1765), lichess.org, 2019.

3.e3 e6 4.Ba3 Be7 5.Be7 Qe7 6.Nf3 0-0 7.Bd3 d6 8.0-0 c6 9.a4 e5 10.Nc3?? (better is 10.Bc4 d5 11.Be2=) 10...e4-+ 11.Be4 (11.Qe2 ed3 12.Qd3 Ne4-+) 11...fe4 12.Nd4 c5 13.Nb3 (13.Nde2 Be6-+) 13...d5 14.d4 c4 15.Nd2 Qf7 (15...a6 16.Qc1-+) 16.Qb1 (16.f3 ef3 17.Qf3 Qd7-+) 16...Qg6 17.Qb4 (17.Ne2-+) 17...Bh3 18.g3 Bf1 19.Nf1 (19.Rf1 Nbd7-+) 19...Nbd7 20.Qd6 Rad8 (better is 20...Qf5!? 21.a5-+) 21.Nd5 Nd5 (21...Qf7!? 22.Nf4-+) 22.Qd5 Kh8 23.Qb7 (23.Qc4 Qh5 24.Re1 Nf6-+) 23...Nf6 (better is 23...Qf5 24.Qc7 Qf2 25.Kh1 Qc2 26.Re1-+) 24.Qa7 Ng4 (better is 24...Nd5 25.Nd2 Qh5-+) 25.b6?? (25.Qa5-+) 25...Rf2 (25...Qf5 26.f4 ef3 27.Qe7 Qc2 28.Nd2 Qd2 29.Qf8 Rf8 30.a5 Qg2) 26.b7 Rff8 (26...Rf1 27.Rf1 Qh6-+) 27.Qc5 (27.Qa5 Qf7 28.Qe1 Qb7-+) 27...Qf6 (27...Qf7 28.Qf8 Rf8 29.h4 Qf2 30.Kh1 Qf3 31.Kg1 Nf2 32.b8Q Qh1) 28.Qc4 (28.Qh5 Qf2 29.Kh1 Qf3 30.Kg1-+) 28...Qf2 29.Kh1 Qh2 (29...Qf3 30.Kg1 Nf2 31.Qg8 Kg8 32.b8Q Qh1) 30.Nh2+- Ne3 31.Qe2 (better is 31.Qc5 Nf5 32.Rb1 h6+-) 31...Nd5 (31...Nf5 32.Qg4 e3 33.a5 Nd4 34.a6 Nc2 35.Rd1+-) 32.Qe4 Nb6 (32...Nf6 33.Qc6 Nh5 34.Qc7+-) 33.a5 Nd7 34.a6 Nb8 1-0. Zpytasz (1785) - darko_cancar, Rated Rapid game, lichess.org, 2021.

4.Bb2 Bc5!?=+.

4.Bb2 c6 5.Be5+= cb5 6.cb5 d5 7.Bb2 Bb4 8.e3 0-0 9.a3 Ba5 10.Nf3 Ne4 11.Nc3 Qf6 (11...f4 12.Qb3 Bc3 13.Bc3+/- (worse is 13.dc3 fe3 14.fe3 Bg4=)) 12.Qb3 Nc3 13.dc3 (13.Bc3 Bc3 14.Qc3 Qd8+/-) 13...Kh8 (13...Be6 14.0-0-0 Rc8 15.Nd4+/-) 14.Nd4 (14.Be2!?+/-) 14...f4+= 15.Qd5 (better is 15.Bc1+=) 15...fe3-/+ 16.fe3?? (better is 16.Be2 Rd8 17.Qe4 Qd4 18.Qd4 Rd4 19.fe3-/+) 16...Re8 (better is 16...Qf2 17.Kd1 Qb2-+) 17.0-0-0+/- Re3 (17...Qe7!?+/-) 18.Bc4+- Re8 19.Rhf1 Qh6 (19...Qg6 20.Qf7 Nd7 21.Qg6 hg6 22.Bf7+-) 20.Kb1 (20.Rd2 Nd7 21.Nf5 Qg6+-) 20...Nd7 21.Rf3?? (better is 21.Qf7 Qg6 22.Qg6 hg6 23.Bf7+-) 21...Nf6 (better is 21...Nb6 22.Qe4 Bd7= (22...Re4?? 23.Rf8)) 22.Qc5?? (better is 22.Qf7 Bg4 23.Nf5+=) 22...Bg4-/+ 23.Nf5 (23.Bf7 Rec8 24.Qe5-/+) 23...Qh2 (23...Qh5!? 24.Rdf1 Rac8 25.Qa7 Bf3 26.Rf3 Rc4 27.Qa5-+) 24.Ng7 (24.Nd6 Re7 25.Nf7 Rf7 26.Bf7 Qg2 27.Rfd3 Bd1 28.Rd1-/+) 24...Bf3-/+ 25.gf3 (25.Ne8 Be4 26.Ka2 Re8 27.Bf7=) 25...Kg7?? (25...Re5 26.Qg1 Qg1 27.Rg1 Re3=+) 26.Qg5 Kh8 27.Qf6 1-0. Zpytasz (1805) - ferrandiazval (1690), Rated Rapid game, lichess.org, 2016.

4.Bb2 d6 5.Nf3 Be7 6.e3 0-0 7.Be2 a6 8.0-0 ab5 9.cb5 Be6 10.a4 Nbd7 11.d4+= e4 12.Ng5 Bf7 13.Nf7 Rf7 14.Qb3 d5 15.Nc3 c6 16.f3 Qe8 17.fe4 fe4 18.Rf5 Bd6 19.g3 Qe6 20.Rf2 (better 20.Raf1=) 20...Ng4 (better 20...c5=+) 21.Rf7+/- Kf7 22.Rf1 (22.bc6 bc6 23.Bg4 Qg4 24.Qb7=) 22...Ndf6?? (better 22...Ngf6=) 23.bc6+- bc6 (23...Rb8 24.c7 Rc8 25.Bg4 Qg4 26.Nd5+-) 24.Qb7 (better 24.Bg4 Qg4 25.Qb7 Kg6 26.Qa8 Bg3 27.Rf6 Kf6 28.hg3 Qg3 29.Kf1 Qf3 30.Ke1 Qg3 31.Kd2 Qh2 32.Ne2 Qc7+-) 24...Be7 (24...Kg6 25.Qa8 Ne3 26.Rf2+-) 25.Qa8 (better 25.Bg4 Qg4 26.Qa8 Qd7+-) 25...Ne3 26.Rf2 h5 (26...Kg6 27.a5+-) 27.Qb7 (27.Bh5 g6 28.Be2 Nf5+-) 27...h4 (27...Nf5 28.Qa7+-) 28.Bh5 (better 28.Ba3! hg3 29.hg3 c5 30.Bc5 g6+-) 28...Kg8 (28...g6 29.Be2 hg3 30.hg3+-) 29.Qb8 (29.Bg6 Nc4 30.Bf5 Qd6 31.gh4 Bf8+-) 29...Kh7 30.Be2 (better 30.Qf4 Nh5 31.Qe3+-) 30...Bd6+/- 31.Qb6 (31.Qb3 hg3 32.hg3 Bg3+/-) 31...hg3 (better 31...Qh3!? 32.Bc1 hg3 33.Be3 gf2 34.Kf2 Bh2-+) 32.hg3+/- Bg3 33.Ne4?? (better 33.Bc1 Bf2 34.Kf2+=) 33...de4 (33...Ne4 34.Qa5 Bf2 35.Kh2 Qh6 36.Bh5 Qh5) 34.d5 (34.Qc5 Nfd5 (34...Bf2?! 35.Kf2 Nfd5 36.Ke1-+) 35.Qf8 Qg6-+) 34...Bf2 (better 34...Nfd5 35.Qb7 Qg6 36.Qg7 Qg7 37.Bg7 Kg7 38.a5-+) 35.Kf2 Neg4 (better 35...Nfd5!? 36.Qb7 Qg6 37.a5-+) 36.Ke1 Qd5 37.Bd4 Nd7 38.Qb2 Nge5 39.Qc3 c5 40.Qh3 Kg8 41.Be3 Nd3 42.Kf1 Qf7 43.Kg1 c4 44.Kh2 (44.a5 Qg6 45.Kf1 Qc6-+) 44...c3 45.Bh5 Qe7 (45...Qa2 46.Kg1 N3e5-+ (46...Qa4?? 47.Qe6 Kh8 48.Qe8 Nf8 49.Qa4+-)) 46.Bd4?? (46.Bd1 Qe5 47.Kg1-+) 46...Qd6 47.Kg1 (47.Qg3 Qd4 48.Bd1-+) 47...Qd4 48.Kf1 Qf2 0-1. Zpytasz (1785) - Dudeman1 (2025), Rated Rapid game, lichess.org, 2016.

3.b5 e5 4.e3 d5 5.d3 c6 6.d4 c5 (6...ed4 7.cd4 Bd6 8.Nf3=+) 7.dc5 (better is 7.de5 Ng4 8.Nf3+/-) 7...Bc5=+ 8.Nd2 0-0 9.Nb3 d4?? (9...Be7 10.c4-/+) 10.c4?? (better is 10.Nc5 dc3 11.Qb3 Kh8 12.Qc3+-) 10...b6 (10...de3 11.Be3 Be3 12.fe3-/+) 11.ed4 Bd4 (better is 11...ed4 12.Bd3 Bb7=+) 12.Be3? (better is 12.Nd4 Qd4 13.Qd4 ed4 14.f3+=) 12...Ba1-+ 13.Qd8 (13.Qa1 Nbd7-+) 13...Rd8 14.Bc5?? (14.Na1 Ng4 15.Bg5-+) 14...Bd4 (better is 14...Bc3 15.Ke2 bc5-+) 15.Bd4 Rd4 (better is 15...ed4 16.Ne2 a6 17.Ned4 ab5 18.cb5-+) 16.Nd4 ed4 17.Bd3 (17.Nf3 a6-+) 17...Ne4 (17...Nbd7 18.Ne2 Ne5 19.Bb1-+) 18.Be4 (18.Ne2 a6 19.Nd4 ab5 20.cb5 Ra4-+) 18...fe4 19.Ne2 Bf5 (better is 19...d3 20.Nc3 Bb7-+) 20.Nd4 Bg6 21.Ne2 (21.Ke2 a6-+) 21...Nd7 22.Nf4 (22.Kd2 Rf8 23.Rf1 Ne5-+) 22...Nc5 (better is 22...Bf7!? 23.Nd5-+) 23.Ng6 hg6 24.f3 (24.Ke2 a6 25.Ra1 ab5 26.cb5 Ra3-+) 24...Rf8 (24...a6!? 25.fe4 ab5 26.cb5 Ra2 27.0-0-+) 25.fe4 Ne4 26.Ke2 Rf2?? (better is 26...Nd6-+) 27.Ke3= Ra2 (better is 27...Rc2 28.Ke4 Rc4 29.Kd3 Rb4=) 28.Kd4?? (28.Ke4 Rg2 29.Ra1 Re2 30.Kd5+=) 28...Ra3 (better is 28...Nd6-+) 29.Ke4+/- Ra2 30.Kd4 (30.g4 g5+/-) 30...Rc2 (30...Rg2 31.Ra1 Rd2 32.Ke5+=) 31.Re1 (31.Ra1!? Rd2 32.Ke5+/-) 31...Rg2 32.Re8 Kh7 33.Ra8 (better is 33.Re7 Rd2 34.Ke3=) 33...Rg5?? (better is 33...Rd2 34.Ke5 Rd7=) 34.Ra7+- Rh5 35.Rg7?? (35.Ra6 g5+-) 35...Kh6 (35...Kg7 36.Ke4-+) 36.c5?? (better is 36.Rb7+-) 36...Kg7 37.c6 (37.cb6 Rb5 38.Ke3 Rb6-+) 37...Rh4 38.Kd5 Rh5 39.Kd6?? (39.Kd4 Rb5 40.Kc3-+) 39...Rc5 (better is 39...Rb5 40.Kc7 Rh5 41.Kb6 Rh2-+) 40.Kc7-/+ Rb5 41.Kb7 Rb4 42.c7 Rc4 43.c8Q?? (better is 43.Kb6 g5 44.Kb7=+) 43…Rc8-+ 0-1. chessovolution - cocoarg (1700), Rated UltraBullet game, lichess.org, 2021.

3.d4 e6 4.e3 d5 5.b5 Bd6 6.Be2 0-0 7.c4 Ne4 8.c5 Qh4?? 9.g3+/- Qf6? (better is 9...Ng3!? 10.Nf3 Qh6 11.fg3 Bg3 12.Kd2 Bf2+-) 10.cd6+- cd6 11.f3 e5 (11...Ng5 12.Nc3+-) 12.fe4 fe4 13.Nh3?? (better is 13.de5 Qf2 14.Kd2+-) 13...ed4?? (better is 13...Bh3 14.Bb2 Nd7+=) 14.Kd2 (better is 14.Rf1 Qh6 15.Qd4 Qh3 16.Qd5 Qe6 17.Bc4 Rf1 18.Kf1 Qd5 19.Bd5 Kh8 20.Be4+-) 14...de3 15.Ke3? (better is 15.Kc2 Bh3 16.Bb2 Rc8 17.Kb3-/+) 15...Qa1?? (better is 15...Bh3 16.Bb2 Qg5 17.Kd4 Bg2-+) 16.Kd2?? (16.Qd5 Kh8 17.Ng5+/- (17.Qd6?! Nd7 18.Ba3 Re8=)) 16...Qe5 (better is 16...Qb1!? 17.Nf4 Qb4 18.Ke3 Qc3 19.Kf2-+) 17.Rf1?? (better is 17.Nf4 g5 18.Ke1 gf4 19.gf4-+) 17...e3 18.Ke1 d4 (better is 18...Bh3 19.Rf8 Kf8-+) 19.Rf8 (19.Nf4 Be6 20.Ne6 Rf1 21.Kf1 Qf5 22.Bf3 Qe6 23.Qd4+/-) 19...Kf8-+ 20.Qd3?? (better is 20.Nf4 g5 21.Nh5-+) 20...Bf5 21.Qd1 (21.Qc4 Bh3 (21...Bb1?! 22.Bb2-+) 22.Ba3 Nd7-+) 21...Bb1 (21...Bh3 22.Bb2 Qd5 23.Qd3 Qh1 24.Bf1-+) 22.Bd3 (22.Bb2 Ba2 23.Bd4 Qd5-+) 22...e2 (better is 22...Bd3 23.Qd3 Qc5-+) 23.Qe2 (23.Qb3 Bd3 24.Qd3-+) 23...Nd7 (better is 23...Bd3 24.Qe5 de5-+) 24.Qe5=+ Ne5 (24...de5 25.Bb1 Nf6 26.Ng5=+) 25.Bh7?? (better is 25.Bb1 Re8 26.Kd1=) 25…Nd3 (25...Nd3 26.Kd2 Rc8-+) 0-1. chessovolution - Vincent_Van_Gogh (1710), Rated UltraBullet game, lichess.org, 2021.

3.e3 g6 4.b5 Bg7 5.d4 d6 6.Be2 c6 7.Nd2 cb5 8.Bb5 Nc6 9.Be2 Bd7 10.Nb3 (10.Ngf3 Qc7=) 10...e5=+ 11.Bd2 ed4 (11...0-0 12.de5 Ne5 13.Nf3=+) 12.cd4= 0-0 (better is 12...Ne4=) 13.d5 (13.Nh3!?=) 13...Ne5 (13...Nd5!? 14.Rc1 Qe7-/+) 14.Nf3 Nf7 (better is 14...Nd5 15.Ne5 de5=+ (worse is 15...Be5 16.Bc4+/-)) 15.Ne5?? (better is 15.Bc3=) 15...Ne5-+ 16.Bc4 (16.Rc1 Qe7-+) 16...Nf7 (16...Nc4 17.Bc3-+) 17.Bb5 (17.Nd4 Rc8 18.Bb3-+) 17...Ne5 (better is 17...Bb5 18.Nd4 Qd7 19.a4-+) 18.Bd7?? (18.Bc4 Nc4 19.Bc3-+) 18...Qd7 (worse is 18...Nfd7 19.0-0-+) 19.Nd4 (19.0-0 Nd5 20.Rc1 Rac8-+) 19...Rac8 (19...Nd3 20.Kf1-+) 20.Ne6 (20.Qb3 Nc4 21.Rd1 Rfe8-+) 20...Rfe8 (better is 20...Nd3 21.Kf1 Ne4 22.Nf8 Qb5-+) 21.Bc3 (21.Qb3 Bh6-+) 21...Nc4 (21...Rc3 22.0-0-+) 22.Be5 (22.Ng7 Qg7 23.0-0-+) 22...Ne5 (better is 22...de5 23.Ng7 Kg7-+) 23.Rc1 (23.0-0 Nc4-+) 23...Nd5! 24.Rc8 (24.Qd5 Rc1 Deflection (24...Rc1 Decoy; 24...Qe6 Remove defender; 24...Rc1 Overloading)) 24...Qc8 (24...Rc8!? 25.Qd5 Rc1 26.Ke2 Rh1 27.Nc5 Qf7 28.Ne6-+) 25.Qd5 Qe6 26.Qe6 Re6 27.0-0 (27.Ke2 d5 28.Rb1 Ra6-+) 27...Ng4 (better is 27...d5 28.Rd1-+) 28.f4 (28.h3 Ne5-+) 28...Ne3 29.Re1 (29.Rb1 Re7-+) 29...Bd4 30.Rb1 Nc2 (30...Re4!? 31.h3-+) 31.Kf1 Re1! (31...Re1 32.Re1 Ne1 33.Ke1 Bg1-+) 0-1. chessovolution - cocoarg (1710), Rated UltraBullet game, lichess.org, 2021.

3.Nf3 d6 4.Nd4 (4.d4!?=) 4...e5=+ 5.Nf3 Be7 (5...e4 6.Nd4=+) 6.e3 (6.Qb3 e4 7.Nd4 d5=+) 6...0-0 (6...e4 7.Nd4=+) 7.h4 (7.Qb3 Kh8 8.Be2=+) 7...Nh5 (7...e4!? 8.Nd4 a5–/+) 8.Bc4 (8.Ne5 de5 9.Bc4 Kh8 10.Qh5 e4=) 8...d5=+ 9.Bb5 (9.Ne5 dc4 10.Qh5 Qd5=+) 9...c6 (9...e4 10.Nd4 Nf6 11.h5–/+) 10.Be2 (10.Ne5 Ng3 11.fg3 Qd6=+) 10...e4–/+ 11.Ne5 Nf6 12.h5 Nbd7 13.Ng6?? hg6–+ 14.h6 gh6 15.Rh6 Kg7 16.Rh4 Ng4 17.Bg4 Bh4 18.Bh3 Ne5 19.Bb2 Nd3 20.Kf1 Nf2 21.c4 Kg8 22.Qc2 f4 23.Qc3 Bf6 24.Qb3 fe3 25.de3 Bb2 26.Qb2 Nd3 27.Bf5 Nb2 (28.Nd2 Qg5–+) 0–1. steelnuts – snake54, Caissa.com, 2004.

4.e3 c6 5.d4 d5 6.bc6 Nc6 7.Nf3 Bd6 (7...Ne4 8.c4=) 8.Nbd2 (8.c4 0-0=) 8...0-0=+ 9.Nb3 (9.c4 f4=+) 9...Ne4 10.Bd2 Qf6 (better is 10...e5=+) 11.Ne5? (better is 11.c4=+) 11...Be5 12.de5 Ne5 13.Nd4? (13.Be2-+) 13...Ng4 (13...Nd2?! 14.Qd2 Qg6 15.Rd1-/+) 14.Bb5 (14.Rg1 Ngf2 15.Qe2-+) 14...Nef2 (14...Ngf2 15.Qb3 Nh1 16.Nf3-+) 15.Qc2 (15.Qa4 Nh1 16.Ke2 Ngf2-+) 15...Nh1 16.Ke2 f4 (better is 16...Ngf2 17.Rf1 e5 18.Nf3-+) 17.Rh1 fe3 18.Be3 (18.Be1 Nf2 19.Bf2 Qf2 20.Kd1 e5 21.Qf2 Rf2-+) 18...Ne3 (better is 18...Qe5!? 19.Ke1-+) 19.Ke3 Qf2 (better is 19...Qg5 20.Kd3 e5 21.Qe2 ed4 22.cd4-+) 20.Kd3?? (better is 20.Qf2 Rf2 21.Kf2+/-) 20...Qf5 (20...Qf4 21.Ne2 Qe4 22.Kd2 Qg2 23.Qb1-+) 21.Kd2?? (better is 21.Nf5 Rf5 22.Ke2+-) 21...Qc2 22.Kc2 (22.Nc2 Rf2 23.Be2 b6-+) 22...e5 23.Kb3 (23.Nf3 e4 24.Nd4 Rf2 25.Kb3 Rg2-+) 23...ed4 24.cd4 Be6 (24...Rf4 25.Rd1-+) 25.Bd3 (25.Re1 Bf5-+) 25...a6 (better is 25...Bf5 26.Bf5 Rf5 27.Rc1-+) 26.Bh7 (26.Re1 Bf5 27.Bf5 Rf5 28.Re7-+) 26...Kh7 27.Rc1 (27.Re1 Rae8 28.Re2 Bd7 29.Re8 Re8-+) 27...Kg8 (27...Rf2 28.Rc7-+) 28.Rc7 (28.Re1 Rae8 29.Re2 Rf4-+) 28...Rfc8 (better is 28...Rf2 29.Re7 Bg4 30.Rb7 Bd1 31.Ka3 Rc8-+) 29.Rg7 (29.Rb7 Rab8 30.Rb8 Rb8 31.Kc3 Rc8 32.Kb4-+) 29...Kg7 30.a4 Rc6 31.Ka3 (31.Kb2 Rac8 32.Ka2 Rc2 33.Kb1 Rg2 34.h4 Bf5 35.Ka1 Rc1) 31...Rb6 (31...Rc2 32.a5 Rac8 33.h4 R8c3 34.Kb4 Re3 35.g4 Rc4) 32.a5-+ Rc8 (32...Rb5 33.Ka2 Rf8 34.h3 Rf2 35.Ka3 Rfb2 36.g4 R5b3 37.Ka4 Bd7) 33.ab6 Rc6 0-1. chessovolution - Vincent_Van_Gogh (1750), Rated UltraBullet game, lichess.org, 2021.

4.e3 c6 5.d4 d5 6.bc6 Bd6 7.Be2 bc6 8.Nd2 0-0 9.Nb3 (9.c4 e5=) 9...Ne4 10.c4 Qh4 11.g3 Qf6 12.Nf3 (12.c5 Bc7 13.Qc2=+) 12...f4 (12...Nc3 13.Qd3 Ne2 14.Qe2-/+) 13.c5 (13.gf4 Nc3 14.Qd3 Ne2 15.Qe2+= (15.Ke2? dc4 16.Qe4 cb3-+)) 13...fg3 14.hg3 (14.cd6? Nf2 (14...gf2?! 15.Kf1-+) 15.Qc2 Nh1-+) 14...Bc7 15.Ne5?? (better is 15.Qc2=) 15…Qf2 0-1. chessovolution (1635) - Vincent_Van_Gogh (1735), Rated UltraBullet game, lichess.org, 2021.

4.e3 c6 5.d4 d5 6.bc6 Bd6 7.Nf3 bc6 (7...Nc6 8.Ba3=) 8.Ne5 (8.Ba3 0-0=) 8...0-0 (better is 8...Be5 9.de5 Ng4=+) 9.Nc6?? (better is 9.Ba3=) 9...Nc6-+ 10.Nd2 (10.Bb5 Bd7-+) 10...Ne4 (10...Rb8 11.c4-+) 11.Nb3 (11.c4 Bb4 12.a3 Bc3-+) 11...Qh4 Black plans f4 (11...Nc3!? 12.Qc2 Bd7 13.Nc5-+) 12.g3 Qf6 13.Bg2 (13.Bb2 Qg5-+) 13...f4 (better is 13...Ba6 14.Qc2 Rac8-+) 14.Be4 fg3 (14...de4 15.ef4 Ba6 16.Qg4-+) 15.c4?? (better is 15.Bh7 Kh7 16.hg3 Kg8 17.f4-+) 15…Qf2 0-1. chessovolution - Vincent_Van_Gogh (1715), Rated UltraBullet game, lichess.org, 2021.

4.e3 d6 5.d4 d5 6.Be2 Bd6 7.c4 0-0 8.c5 Ne4?? (8...Be7 9.Nf3=) 9.Nf3?? (better is 9.cd6 cd6 10.Nf3+-) 9...Be7= 10.Ne5 (10.0-0 c6=) 10...c6 (10...Bf6 11.Nd3=) 11.f3 Nd7? (better is 11...Qa5!? 12.Bd2 Nd2 13.Qd2 Qc7=) 12.fe4 (12.Nd7!? Qa5 13.Nd2 Bh4 14.g3 Ng3 15.hg3 Bg3 16.Kf1 Bd7+-) 12...Ne5+/- 13.de5 fe4 14.bc6 Bh4 (better is 14...Bc5!? 15.Qc2 Qe7+/-) 15.g3+- Qg5?? (better is 15...Be7 16.cb7 Bb7+-) 16.cb7 Bg3 17.Kd2 (better is 17.hg3 Qg3 18.Kd2 Bb7 19.Bb2+-) 17...Bf4 (17...Bb7 18.hg3 Qe5 19.Qb3+-) 18.Qg1 (better is 18.ba8Q Be3 19.Kc2 Bc1 20.Qc1+-) 18...Be3 (18...Bb7 19.ef4 Qf4 20.Kc2 Qe5 21.Bb2+-) 19.Kc2 (better is 19.Qe3 Qe3 20.Ke3 Bb7 21.Nd2+-) 19...Bd4 (19...Bb7 20.Qg5 Bg5 21.Bg5 d4+-) 20.Qg5 (better is 20.Bg5 Bb7 21.Qd4+-) 20...g6 (20...Bb7 21.Nc3 Bc5 22.Rb1+-) 21.Rg1 (21.ba8Q Bf2 22.Qa7 Bc5 23.Qc5 Rd8 24.Qd8 Kg7 25.Qcf8) 21...Rf5 (21...Bb7 22.Bb2 Bc5 23.Rc1+-) 22.Qh6 (22.ba8Q Rf8 23.Qa7 Bd7 24.Qd7 Rf7 25.Qgd8 Rf8 26.Bh6 Rd8 27.Qg7) 22...Bd7 23.Bh5 (23.ba8Q Bc8 24.Qc8 Rf8 25.Qcf8) 23...Be8 24.Bg6 (24.ba8Q Rf2 25.Nd2 Rf8 26.Bg6 Ba4 27.Nb3 Bb3 28.ab3 Ra8 29.Qh7 Kf8 30.Qf7) 24...Bg6 25.Qg6! hg6 26.Rg6 Kf7 27.Re6 (better is 27.ba8Q Kg6 28.Qg8 Kh5 29.h3 Rf2 30.Kb3 Rf3 31.Ka4+-) 27...Rf2? (better is 27...Rb8 28.Rd6 Rb7+-) 28.Kb3 (better is 28.Nd2 Rb8 29.c6 Ke6 30.c7+-) 28...Ba1?? (better is 28...Rb8 29.Rh6 Rb7 (worse is 29...Ba1 30.e6 Ke7 31.c6+=) 30.Ka3 Rb5 31.e6 Ke8-/+) 29.Ka4 (better is 29.ba8Q Rf3 30.Ka4 Ke6 31.Qe8 Kf5+-) 29...Rf1?? (29...Rb8 30.Rh6 Ra2 31.Kb3 Rf2 32.e6 Ke7=+) 30.Kb5 (better is 30.ba8Q Ke6 31.Qe8 Kf5 32.Qf7 Ke5 33.Qf1+-) 30...Rc1 (30...Rb8 31.Nd2 Ke6 32.Nf1 Rb7 33.Ka6-+) 31.c6 (31.Rf6 Kg8 32.ba8Q Kh7 33.Qb7 Kg8 34.Qf7 Kh8 35.Rh6) 31...Rb1-+ 32.Kc5 (32.Kc5 Rh8 33.Rf6 Ke7 34.Rg6-+). chessovolution (1630) - Vincent_Van_Gogh (1745), Rated UltraBullet game, lichess.org, 2021.

5.d4 c6 6.bc6 Bd6 7.Be2 bc6 8.Nd2 0-0 9.Nb3 (9.Ngf3 Ne4 10.Bb2 Nd7=) 9...e5 10.de5 (10.c4 Ne4=+) 10...Be5-/+ 11.Nd4 Bd6 (11...Ne4!? 12.Bb2 c5-/+) 12.Ngf3= Ne4 (12...Qa5 13.Bd2=+) 13.Bd2 (13.Nc6 Qc7 14.Ncd4 Qc3 15.Bd2 Nd2 16.Nd2 f4=) 13...Qf6 (13...f4 14.Bd3=+) 14.g3 (14.c4 f4=) 14...Nd7 (better is 14...a6-/+) 15.Ne5?? (better is 15.c4=+) 15...Qh6 (better is 15...Be5 16.f3 Qg6-+) 16.Nd7 (better is 16.Nec6!? Nb6 17.Rb1+=) 16...Bd7-/+ 17.Nf5?? (better is 17.c4-/+) 17...Bf5 18.g4 (18.0-0-+) 18...Nc3! 19.gf5?? (19.Bc3 Be4 Combination) 19...Nd1 20.Bd1 (20.Rd1 Qh4 21.Bd3 d4-+) 20...Qf6 (better is 20...Rf5 21.Bg4 Rf2-+) 21.Rf1 (21.Rc1 Qf5 22.Rf1 Bh2-+) 21...Bg3 (better is 21...Qa1 22.a4-+) 22.fg3 (22.Rc1 Bh2 23.Ba4-+) 22...Qg5 (better is 22...Qa1 23.g4 Qa2-+) 23.Bf3 (23.Bc2-+) 23...Qe3 (better is 23...Rf5 24.Ke2 Qg6-+) 24.Be3+- Rae8 (24...Rf5 25.Rc1 Re8 26.Kd2+-) 25.Kf2 (better is 25.Kd2 Rf5 26.Ba7 Ref8+-) 25...Re3 (25...Rf5 26.Ba7 h5+-) 26.Ke3 d4 (26...Rf6 27.Rab1 Rd6 28.Rb7+-) 27.Kf2 (better is 27.Kd4!? Rd8 28.Ke5 Re8 29.Kd6 Rf8+-) 27...Re8 (27...Rf5 28.Kg2 c5 29.g4+-) 28.Rad1 (28.Bc6 Rd8+-) 28...d3 (28...c5 29.Rfe1 Rf8 30.Re5+-) 29.Bc6 Re2 (29...Re2 30.Kf3 Rh2 31.Rd3 Rc2 32.Bd5 Kf8+-). chessovolution - Vincent_Van_Gogh (1730), Rated UltraBullet game, lichess.org, 2021.

5.Be2 Bd6 6.d4 0-0 (6...a6 7.Nf3=+) 7.Nf3 Ne4 8.Ne5 (8.c4 a6=) 8...Qf6 9.Nf3 Nd7 10.b6? (10.c4 Nb6=+) 10...cb6 (10...Nb6 11.a4 Bd7-+) 11.Nbd2? (11.c4 Kh8-/+) 11...g5 (11...Nc3 12.Qb3 Ne2 13.Ke2-+) 12.Ne4? (better is 12.Bb2-/+) 12...fe4-+ (12...de4?! 13.Nd2=+) 13.Ne5 (13.Rf1 ef3 14.Bf3 Qg6-+ (14...Bh2?! 15.Ba3-+)) 13...Qf2 14.Kd2 Ne5 15.de5 Be5 16.Rf1 Qh4 (16...Qg2 17.Rg1 Qh2 18.Rg5 Bg7 19.Ba3-+) 17.Rf8 Kf8 18.Bg4 (18.Ba3 Kg7-+) 18...Ke7 (18...Qh2 19.Qh1-+) 19.Bh5 (19.Ba3 Kd8-+) 19...Qf2 20.Be2 Bf4 (20...Qg2 21.Ba3 Kd7 22.Qb3 Qh2 23.Rf1-+) 21.Kc2?? (better is 21.ef4 gf4 22.Ba3 Kf6 23.Qf1 Qf1 24.Rf1-+) 21...Qe3 (better is 21...Bd7 22.Ba3 Kd8-+) 22.Be3+- Be3 23.Qf1 (23.Qe1 Bd7 24.Qg3 Bf4+-) 23...Bf4? (better is 23...Bd7 24.g4 Rc8+/-) 24.Qf3?? (24.g3 Be5+-) 24...e5 (better is 24...ef3 25.Bf3 Bd7-+) 25.Qg4?? (better is 25.Qh5 Bf5 26.Rd1+-) 25…Bg4-+ (25...Bg4 26.Bg4 Rh8-+) 0-1. chessovolution - Vincent_Van_Gogh (1635), Rated Blitz game, lichess.org, 2021.

7.a4 Ne4 8.Nd2 (8.Ba3 a6=+) 8...Qh4 (8...Nc3!? 9.Qb3 Ne2 10.Ne2 a6-/+) 9.g3=+ Qf6 10.Ngf3? (10.c4 a6=+) 10...Qf7?? (10...Nc3 11.Qb3 Ne2 12.Ke2-/+) 11.Ne4? (better is 11.Bb2=) 11...fe4-+ (11...de4?! 12.Ne5 Be5 13.de5=) 12.Ne5 Qf2 13.Kd2 Be5 14.de5 Qf7 (14...Nd7!? 15.Ba3 Rf3 16.Qg1 Ne5 17.Qf2 Rf2 18.Ke1-+) 15.Qc2 (15.Ba3 Rd8=+) 15...c6 (15...Nd7 16.Ba3 Rd8 17.Rhf1-/+) 16.Bb2 (16.Ba3 Re8=+) 16...Qe7 17.Raf1 cb5 18.Rf8 Qf8 19.Bb5 (19.Rf1 Qe7-/+) 19...Qe7 (19...Qf2 20.Be2-+) 20.Be2 Nd7 (20...Bd7 21.c4-+) 21.Rf1 (21.c4 Qb4 22.Bc3 Qc5-/+) 21...Nc5 22.Qb3?? (better is 22.Ba3-+) 22...Nb3 23.Kc2 d4! 24.Ba3 (24.cd4 Na5 Combination; 24.ed4 Na5 Combination) 24...dc3 (24...Qa3 25.Rb1 Qa2 26.Rb2 d3 27.Bd3 ed3 28.Kd3 Qb2 29.a5 Nc5 30.Kd4 Qd2 31.Kc4 Na4 32.h3 Qc3 33.Kb5 Bd7) 25.Be7+- Bd7 26.Kb3 Ba4?? (26...a5 27.Kc3 Ba4 28.Bg4+-) 27.Kc3 (better is 27.Ka4!? Re8 28.Bd6 a6+-) 27...b5? (better is 27...Rc8 28.Kd4 b5+-) 28.Bb5 (better is 28.Bg4+-) 28...a5?? (better is 28...Bb5 29.Ra1 Kf7-/+) 29.Ba4+- Rc8 (29...h5 30.Bd7 Kh7 31.Bd6+-) 30.Kd4 h6 31.Bd6 Rd8 0-1. chessovolution - Vincent_Van_Gogh (1720), Rated UltraBullet game, lichess.org, 2021.

7.a4 Ne4 8.Nf3 Qf6 (better is 8...a6=+) 9.Nbd2? (9.Ba3 c5=) 9...Nd7 (better is 9...Nc3 10.Qb3 Ne2 11.Ke2 Qg6-/+) 10.Ne4?? (better is 10.Bb2=+) 10...fe4-+ (10...de4?! 11.Nd2=) 11.Ne5 (11.Ba3 ef3 12.Bf3 Ba3 13.Ra3 a6 14.ba6 Ra6-+) 11...Qf2 12.Kd2 Nc5 (better is 12...Be5 13.de5 Qg2-+) 13.Rf1 (better is 13.Ng4 Qg2 14.dc5 Bc5 15.Qg1 Qg1 16.Rg1=) 13...Nb3?? (better is 13...Qg2 14.Rf8 Kf8-/+) 14.Qb3+- Qf1? (better is 14...Qg2 15.Ba3 Rf1 16.Rf1 h6+-) 15.Bf1 Rf1 16.Bb2 (better is 16.c4 Rf2 17.Ke1 Rg2 18.cd5 Rh2 19.de6 Rh1 20.Kd2+-) 16...Bd7?? (better is 16...Rf2 17.Ke1 Rg2+-) 17.Rf1 Rf8 (17...Rd8 18.c4 dc4 19.Nc4 Bh2 20.Qb4+-) 18.Rf8 Bf8 19.Nd7 Be7 20.Nf8! Kf7 (20...Bf8 21.c4 Combination; 20...Kf8 21.c4 Combination) 21.Qd5! Kf8 (21...ed5 22.Nd7 Combination) 22.Qe6 Ke8 23.d5 (23.Ba3 c5 24.bc6 Kf8 25.Qe7 Kg8 26.Qf8) 23...c6 24.d6 Kd8 25.Qe7 Kc8 26.d7 (26.Qe8) 26...Kc7 27.d8Q 1-0. chessovolution - Vincent_Van_Gogh (1740), Rated UltraBullet game, lichess.org, 2021.

7.Bc4?? dc4 8.Qa4 Bd7-+.

7.Bc4?? Ne4 8.Be2 c6 9.f3?? (better is 9.a4-/+) 9...Qf6 (better is 9...Qh4 10.g3 Ng3 11.hg3 Bg3 12.Kd2 Qh1-+) 10.fe4+/- fe4 11.Nf3?? (better is 11.Nh3+/-) 11...ef3-/+ 12.Bf3 Bf4?? (better is 12...Qh4 13.Ke2 cb5-/+ (worse is 13...Bh2 14.Nd2+=)) 13.bc6?? (13.ef4 cb5 14.0-0 b4+-) 13...Be3?? (better is 13...Qh4 14.Ke2 Bd6= (worse is 14...Bh2 15.Qg1+/-)) 14.Be3 e5 (14...bc6 15.0-0 Ba6+-) 15.de5 (better is 15.Bd5 Rf7 16.de5 Qe5 17.Bf7 Kf7 18.0-0 Ke6 19.Qf3+-) 15...Qe6 (15...Qh4 16.Bf2 Qe7 17.Qd5 Rf7 18.cb7 Bb7 19.Qb7 Qb7 20.Bb7 Rb7+-) 16.Bd4 (16.Bd5!? Nc6 17.Qb3 Re8+-) 16...Bd7 (16...bc6 17.0-0+-) 17.Nd2 (better is 17.cb7 Bc6 18.ba8R Ba8 19.0-0+-) 17...Nc6 18.Bc5 (better is 18.Qb3 Nd4 19.cd4+-) 18...Nd4?? (better is 18...Qe5 19.Kf2 Rf7+-) 19.Bf8 (better is 19.cd4 Rfd8+-) 19...Rf8 (19...Qe5 20.Kf2 Rf8 21.Re1 (21.cd4 Qd4 22.Ke1 Bb5+=) 21...Qh2 22.cd4 Qh4 23.g3 Qh2 24.Ke3 Qg3 25.Rh1+-) 20.Rf1 (better is 20.cd4 Rf4 21.Nb3+-) 20...Nf3 (20...Qe5 21.Kf2 Nb5 22.Nb1+-) 21.Rf3 (better is 21.Nf3 Bb5 22.Rf2 Rf4+-) 21...Qe5 22.Kf2 Qc3 23.Rf8 Kf8 24.Qf3 Qf6 (24...Qf3 25.Nf3 Ke7 26.Re1 Kd6 27.Ng5+-) 25.Qf6 gf6 26.Nf3 (better is 26.Rb1 b6+-) 26...Bc6 (26...Ke7+-) 27.Nd4 f5 (27...Bd7 28.Rc1+-) 28.Nf5 (28.Rc1 Bd7+-) 28...Bb5 (28...a6 29.Rc1 Bd7 30.Ke3+-) 29.Nh6 (29.Nd6 Bc6+-) 29...d4 (29...Bc4 30.a4+-) 30.Ng4 (30.Rc1 d3+-) 30...d3 (30...h5 31.Ne5+-) 31.Rd1 d2 32.Rd2 Kg7 (32...Ke7 33.Ke3+-) 33.Rd4 (better is 33.Rc2 Bc6 34.Ke3+-) 33...Bd3 (33...Kf7 34.Rd8+-) 34.Rf4 (better is 34.Rd7 Kf8 35.Rd3 Ke7+-) 34...h6 (34...Bb5 35.Ne5 Be8 36.Nc4+-) 35.Rf6 (35.Ne5!? Ba6+-) 35...h5 36.Re6 (better is 36.Rd6 Be4 37.Nf6 Bg6+-) 36...hg4 37.Re7 Kf6 (37...Kg6 38.Rb7 a6 39.Kg3+-) 38.Rb7 g3 (38...a6 39.Kg3+-) 39.Ke3 (better is 39.Kg3 a6 40.Kf4+-) 39…a5 (39...a5 40.Kd3 gh2+-). chessovolution - Vincent_Van_Gogh (1710), Rated UltraBullet game, lichess.org, 2021.

7.Bd3 Ne4 8.Be2 (8.Nf3 a6=+) 8...Qf6 (better is 8...a6-/+) 9.f3?? (better is 9.Nf3=+) 9...Nd7 (better is 9...Qh4 10.g3 Ng3 11.hg3 Bg3 12.Kd2 Qh1-+) 10.f4?? (better is 10.fe4 fe4 11.Nh3 Qh4 12.Kd2+/-) 10...Qh4-/+ 11.g3 Ng3! 12.Kd2? (12.hg3 Qh1 Pinning (12...Qh1 Deflection)) 12...Ne4 (better is 12...Nh1!? 13.Nf3 Qe7 14.Qh1-+) 13.Kc2 c6 14.Nf3 Qe7 15.bc6 Ndc5?? (15...bc6!? 16.Qe1-+) 16.cb7?? (better is 16.dc5 Bc5 17.cb7 Bb7 18.Qg1+=) 16...Nd3?? (better is 16...Nb7 17.Qg1 Bd7-+) 17.Bd3 (better is 17.ba8Q Ndf2 18.Qe1 Qc7+-) 17...Nc5?? (17...Bb7 18.Qe1+-) 18.Be4 (18.ba8Q Bd7 19.dc5 Ba4 20.Kd2 Bd1 (20...Ra8?? 21.Qa4 Bc5 22.Ba3+-) 21.cd6 Ra8 22.de7 Bf3+-) 18...Nd3?? (18...Nb7 19.Bd3 Rb8+-) 19.Bd3 (better is 19.ba8Q fe4 20.Ng5+-) 19...Bb7 20.Ne5 Bc6 (20...Rfc8+-) 21.Nc6 Qc7 22.Ne5 Rac8 23.Bd2 Be5 24.de5 (24.fe5 Rb8+-) 24...Qb7 (24...Rb8 25.Qf3+-) 25.Qc1 Rb8 26.Kd1 Qd7 27.Na3 Qa4 (27...Rfc8 28.Rg1+-) 28.Nc2 Qe8 29.Nb4 (29.Nd4 Qh5 30.Be2 Qf7+-) 29...Rb4 (29...Rf7 30.Rb1+-) 30.Bc2 (30.Bc2 Qh5 31.Ke1+-) 1-0. chessovolution (1625) - Vincent_Van_Gogh (1705), Rated UltraBullet game, lichess.org, 2021.

7.Bf3 Ne4 8.Ne2 Qf6 (8...a6 9.ba6 Na6 10.Qb3-/+) 9.Nf4 (9.Ba3 Bd7 10.Qb3 Ng5=) 9...Nd7 10.Ne6?? (better is 10.Be4 fe4 11.Ba3=+) 10...Qe6-+ 11.g3 (11.Ba3 f4-+) 11...Qf6 (11...a6 12.ba6 Ra6 13.Be2-+) 12.Nd2 (12.Ba3 a6-+) 12...c5 (better is 12...Nb6-+) 13.Ne4 (13.bc6 bc6 14.c4-+) 13...fe4 14.Bg2 (14.Be2 Qf2 15.Kd2-+) 14…Qf2 0-1. chessovolution (1635) - Vincent_Van_Gogh (1700), Rated UltraBullet game, lichess.org, 2021.

3.a3 a5 4.b5 a4 (4...Nf6 5.d4 ed4 6.Qd4=) 5.Bb2 d6 6.Nf3 Nf6 7.g3 (7.Nc3 Be7=) 7...b6 (7...Be7 8.Nc3=) 8.Bg2 (8.Nc3 c6+=) 8...Bb7 (8...e4 9.Nd4+=) 9.Qc2 g6 10.0-0 Bg7 11.Ng5 (11.Nc3!?+/-) 11...Bg2= 12.Kg2 Qe7 13.h4 (13.d4 Ng4 14.Nf3 e4=) 13...Nbd7=+ 14.Nc3 h6 (14...Nc5 15.Rad1=+) 15.Nf3= 0-0 (15...Nc5 16.Nd5 Nd5 17.cd5=+) 16.d4 (16.Na4 Qe6=) 16...e4 (16...ed4 17.Nd4 Nc5 18.Rfd1=+) 17.Nd2 (17.Ne1 e3=) 17...Ng4 (17...e3 18.fe3 Ng4 19.Nd5 Ne3 20.Ne3 Qe3 21.Qd3=+) 18.Nd5 (worse 18.Na4 e3 19.Nf3 ef2-+ (19...Nf2?! 20.Nc3=+)) 18...Qd8 (better 18...Qf7!?=) 19.f3+/- ef3 20.ef3 (20.Nf3?! Ndf6 21.Nh2 Nh2 22.Nf6 Qf6 23.Kh2 Rae8=+) 20...Ngf6 21.Ne3 (better 21.Nf4!? Qe8 22.Rae1+/-) 21...Re8 22.Rae1 Kh7 (22...Re7 23.Rf2=) 23.Nb1 (23.g4 f4 24.Nd1 Ng4+=) 23...f4 24.gf4 Nh5 25.Ng4?? (better 25.f5 Qh4 26.fg6 Kg8 27.Bc3=) 25...Qh4-+ (worse 25...Nf4 26.Kg3 Nf6 27.Nf6 Qf6 28.Re4-/+) 26.Rh1?? (26.Ne3 Qf4 27.Qf2 Bd4 28.Bd4 Qd4 29.Rh1-+) 26...Nf4 27.Kf1 (27.Kg1 Re1) 27…Re1 0-1. INALEVA (1755) - hemaster (1735), Rated Blitz game, lichess.org, 2014.

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5).

3.Bb2 Qe7 4.b5 Nf6 5.Nf3 e4 6.Nd4 d6 7.e3 h5 8.Nc3 Be6 9.Qc2 d5? (better is 9...Nbd7!?+=) 10.Ne6 Qe6 11.Nd5 Nd5 12.cd5 Qd7 13.Rc1 Bd6 14.h4 a6 15.a4 Kd8 16.Qc3 Rh7 17.Qb3 Qf7 18.ba6 b6 (18...Na6 19.Qb7 Rb8 20.Qa6 Rb2 21.Qa8 Ke7+–) 19.Bc4 (better is 19.a5 Nd7 20.ab6 Nb6 21.Rc6+–) 19...Na6+/– 20.Ba6 Ra6 21.Rc6 f4 (better is 21...Ra5!?=) 22.Qc4+/– Ra5 23.Qe4 fe3 24.de3 (24.Qe3?! Qd5 25.Qg5 Qg5 26.hg5 Ra4+=) 24...Qd5 25.Qd5 Rd5 26.0-0 Rd2 27.Bd4 Ra2 28.Rfc1 Ra4 (better is 28...Ke8!?+/–) 29.Bb6!+– cb6 30.Rd6 Ke7 31.Rb6 Rh4 32.Rc7 Kd8 33.Ra7 Kc8 34.Rbb7 Rg4 35.Rf7 Kb8 36.Rae7 Rc4 37.Rg7 Rg7 38.Rg7 Kc8 39.Kh2 Rc2 40.f3 Kd8 41.Rh7 Rc5 42.Kh3 Ke8 43.Kh4 Rc2 44.Kg3 Rc5 45.e4 Rg5 46.Kh3 Kf8 47.g3 Kg8 48.Rd7 Rc5 49.Rd5 Rc3 50.Rf5 Kg7 51.f4 Kg6 52.Rg5 Kh6 53.Kh4 Rc1 54.Rh5 Kg6 55.Kg4 Rf1 56.e5 Rb1 57.Rf5 Rb4 58.e6 Re4 59.Re5 Rb4 60.e7 (60.e7 Rb8 61.e8Q Re8 62.Re8 Kf6 63.f5 Kf7 64.Re6 Kg8 65.f6 Kh8 66.Re8 Kh7 67.f7 Kg6 68.f8Q Kh7 69.Qf7 Kh6 70.Rh8) 1–0. Luettig,Hendrik – Damman,Frank, Pinneberg Winter–B, 1998. (=1.c4 f5 2.b4 e5)

3.Bb2 Nf6 4.Be5 Bb4 5.Nf3 d6 6.Bb2 Nc6 7.e3 f4 8.ef4 Bg4 9.Be2 0-0 10.0-0 Bc5 11.d4 Bf3 12.Bf3 (12.dc5?! Be2 13.Qe2 dc5=) 12...Bb6 13.Na3 Ne7 14.Bb7 Rb8 15.Bf3 c5 16.d5 Nf5 17.Rb1 Nd4 18.Nc2 Nf3 19.Qf3 Qd7 20.Rfe1 Qa4 21.Qb3 Qd7 22.Re6 Ng4 23.Qg3 Nf6?? (23...Bd8+–) 24.Bf6 Rf6 (24...Ba5 25.Rb8 Rb8 26.h3+–) 25.Rf6 Qe7 26.Re6 Qf7 27.Ne3 h5 28.Qg5 Kh7 (28...Rf8 29.f5+–) 29.Re7 (better is 29.Nf5!? Rf8 30.Re7 Bd8 31.Rf7 Bg5 32.Rg7 Kh8 33.Rg5 h4+–) 29...Bd8 30.Rb8 Be7 31.Qf5 Qf5 32.Nf5 (32...Bf6 33.Ra8+–) 1–0. Hechtlinger,John (2040) – Moore,Michael (1765), Dos Hermanas Internet Section, 2003.

3.b5 Nf6 4.a4 Bc5 5.e3 0-0 6.Bd3 (better is 6.Nc3!?+=) 6...d5–+ 7.Qb3 d4 8.ed4? (better is 8.Ba3 Ba3 9.Na3 de3 10.de3–/+) 8...Qd4 9.Nh3 Qg4 (9...Qa1?! 10.Bb2 Qb2 11.Qb2+=) 10.0-0 (10.Be2 Qg2 11.Qf3–+) 10...f4 11.Bc2 (11.Re1 f3 12.Bf1 Ne4–+) 11...f3! 12.Qf3 (12.Qf3 Qc4 Discovered attack (12...Qc4 Deflection)) 12...Qf3 13.gf3 Bh3 14.Re1 (14.Rd1 Bd4 15.Ra3 Be6–+) 14...Ng4! 15.fg4 (15.Re2 Rf3 16.Ra3 Rf2 17.Rf2 Nf2 18.Rf3 Nd3 19.Kh1–+) 15...Rf2 16.Re3 (16.d4 Bd4 17.Bh7 Kh7 18.Be3 Be3 19.Kh1 Bg2 20.Kg1 Re2) 16...Rf1 0–1. lolitaire – jaburr (2320), gameknot.com, 2014. (=1.c4 f5 2.b4 e5)

3.b5 Nf6 4.Bb2 Bc5 5.e3 d6 6.Nc3 0-0 7.g3 a6 8.Bg2 Nbd7 9.Nge2 e4 10.Nf4 Ne5 11.d4 ed3 (worse is 11...Nc4 12.Qb3 ab5 13.dc5+/–) 12.Nd3 Nc4 13.Qb3 ab5 14.Nb5 Be6 15.Bb7 (worse is 15.Nc5 dc5 16.Rd1 Qe7 17.Bf6 A) worse is 17...Qf6 18.Nc7 (18.Bb7 Na3 19.Qc3 Nb5 20.Qf6 gf6–+) 18...Bf7 19.Na8+/–; B) 17...Rf6 18.Bb7 Rb8–/+) 15...Rb8 16.Bc6 Rb6 17.Nf4?? (better is 17.Nc5 dc5 18.Rd1+=) 17...Bf7–+ (17...Rc6? 18.Ne6 Qe7 A) 19.Qc4?! d5 20.Bf6 Qe6= (20...dc4?? 21.Be7 Be7 22.Nf8 Kf8 23.Ke2+–); B) 19.Nf8+–) 18.Bd5 Nd5 (18...Bd5?! 19.Nd5 Nd5 20.Qc4–/+) 19.Qc4 Nf4 20.Qf4 Rb5 21.Bc3 Qe7 (21...Ba2 22.Qa4 Qa8 23.Qb5 Qh1 24.Ke2–+) 22.0-0 Bd5 23.a4 (23.Rfd1 Ba3 24.h4–+) 23...g5 24.ab5 gf4 (24...gf4 25.Bd4 Bd4 26.ed4 Qe4–+) 0–1. Dolgener,Daniel – Heidenfeld,Mark, Bad Urach op, 1986. (=1.c4 f5 2.b4)

4.Bb2 d6 5.e3 h5 6.d4 Ne4 7.de5 Nc6 8.ed6 cd6 9.Nc3 a6 10.Ne4 fe4 11.Qd5 Be7 12.Bg7 Rh7 13.Qg8 Kd7 14.Qh7 Qe8 15.Bb2 Qf8 16.Ne2 Kd8 17.Rd1 Be6 18.Nf4 Bg4 19.Be2 Bg5 20.Bg4 hg4 21.Ne6 Ke8 22.Nf8 Be7 23.Qg6 Kd8 24.Rd6 1–0. Woelfelschneider,Peter – Krahl,Wolfgang, TRE, 2002.

4.Bb2 e4 5.Nc3 c6 6.d3 e3 7.fe3 d5 8.cd5 Nd5 9.Nd5 cd5 10.Nf3 Nd7 11.Qa4 a6 12.Nd4 Be7? (better is 12...Kf7+/–) 13.Ne6+– (13.Nf5?! Bf6 14.Nd6 Ke7 15.Nf5 Kf7+/–) 13...b5 (13...Qb6 14.Ng7 Kf7 15.Nf5 Bf6+–) 14.Qc2 (14.Nd8?! ba4 15.Ne6 Kf7+–; 14.Ng7?! Kf7 15.Qb3 Nf6=; 14.Bg7?! ba4 15.Nd8 Rg8=) 14...Qb6 15.Nc7 Kf7 (15...Kd8 16.Na8 Qb8 17.Rc1+–) 16.Na8 Qg6 17.Rc1 Bf6 18.Bf6 Qf6 19.g3 Ne5 (19...Qe7 20.Qc6 Qe3 21.Qd5 Qe6 22.Bg2+–) 20.Bg2 Be6 21.Nc7 Rc8 22.Qc5 Ng4 (22...Nd7 23.Qa7 Qe7 24.0-0+–) 23.Bd5 Bd5 24.Qd5 (24.Nd5 Rc5 25.bc5 Qb2+=) 24...Kg6 25.e4 Ne3 (25...Kh6 26.Qd7 Rd8 27.Qf5 Qf5 28.ef5+–) 26.ef5 Kh6 27.Qe4 Rc7 28.Qe3 Kh5 29.g4! Kh4 (29...Kg4 30.Rg1) 30.Qg3 Kg5 31.h4 Kh6 32.g5 Qg5 33.hg5 1–0. b4_player (2255) – fub (1830), GameColony.com, 2003.

4.Be5 Qe7 5.Bb2 Nc6 6.e3 d6 7.Nc3 Nf6 (7...Bc3 8.Bc3 Nf6 9.Nf3=) 8.Nf3 (better 8.Nd5!? Qf7 9.Bf6 gf6 10.Nb4 Nb4 11.d4+/-) 8...0-0= 9.a3 Ba5 10.Bd3 a6 11.0-0 h6 (11...Ne5 12.Be2=) 12.Qc2 Nh7 (12...Bc3 13.Bc3 (worse 13.dc3 Ne5=+) 13...Ne4 14.Bb2+=) 13.Ne2 (13.Nd5 Qf7+/-) 13...Ne5 14.Ned4 c5 (14...Nd3 15.Qd3 Bd7 16.Rfb1+=) 15.Nf5 (15.Ne5 de5 16.Nf5 Bf5 17.Bf5 Nf6+/-) 15...Bf5 (15...Nf3 16.gf3 Rf5 17.Bf5 Qg5 18.Bg4 Bg4 19.h4-/+) 16.Bf5 (better 16.Ne5!? Qe6 17.Bf5 Qf5 18.Qf5 Rf5 19.Ng6+/-) 16...Nf3= 17.gf3 Qg5 18.Kh1?? (18.Bg4!? Rf3 19.Qe4+=) 18...Rf5?? (better 18...Qf5 19.Qf5 Rf5-+) 19.Rg1= Qh5 20.Bg7?? (20.Rg7 Kf8 21.f4 Qf3 22.Kg1 Rg5 23.fg5 Ng5 24.Rg5 hg5 25.Qg6 Qg4 26.Kf1 Qc4 27.Ke1+/-) 20...Qf3-+ 21.Rg2 Rg5 22.Rag1 Rg7 0-1. fedorstar (1730) - markant (1755), Rated Classical game, lichess.org, 2014. (=1.c4 f5 2.b4)

4.Be5 Qe7 5.Bc7 Qf6 6.Nf3 Qa1 7.Be5 Bd2 8.Nbd2 Qd1 9.Kd1=+.

4.Be5 Qe7 5.Bc7 Nf6 6.f3 (6.a3 Na6 7.Bf4 Bd6 8.Bd6 Qd6+/-) 6...d6 (better 6...Na6!? 7.a3 Bd2 8.Qd2 Nc7=+) 7.Bb8+= Rb8?? (7...0-0 8.Qb3 Bc5 9.Bd6 Qd6+=) 8.a3 (better 8.Qa4 Bd7 9.Qb4+-) 8...Bc5= 9.Nc3 0-0 10.Nh3 a6 11.e3 b5 (better 11...d5!? 12.Nf4 d4=+) 12.cb5+/- ab5 13.Bb5 d5 14.d4?? (14.Nf4 d4 15.Bc4 Kh8 16.Ncd5 Nd5 17.Nd5+= (worse 17.Bd5 de3 18.d4 Ba3-/+)) 14...Qe3-/+ 15.Be2?? (better 15.Ne2 Rb5 16.dc5-/+) 15...Bd4 (better 15...Qc3 16.Kf1 Ng4 17.dc5 Ne3 18.Kf2 Nd1 19.Rhd1 Rb2-+) 16.Nd5 (16.Kf1 Bc3 17.Qc1-+) 16...Nd5 17.Ra2 0-1. prados (1665) - Annbuut (1665), Rated Classical game, lichess.org, 2014.

4.Be5 Nf6 5.Nc3 Bc3 6.Bc3 0-0 7.Nf3 Nc6 8.e3 d6 9.Be2 Qe7 10.–0 Ne4 11.Bb2 f4 12.ef4 Rf4 13.d3 Nc5 14.Qd2 Rf8 15.Rae1 Bf5 16.Bd1 Qd7 17.Bc2 Rae8 18.Nh4 Ne7 19.Re3 Bg6 20.Ng6 Ng6 21.d4 Re3 22.Qe3 Re8 (22...Na4!? 23.Bc1 Nb6+/–) 23.Qf3+– Na4 24.Ba3 (24.Qd5!? Kh8 25.Bg6 hg6 26.Qb7+/–) 24...Nb6+/– 25.Bb3 Kh8 26.Qb7 Nf4 27.c5 (27.Qa7 Ra8 28.Qb7 Ra3+=) 27...d5 (27...Qg4 28.g3 Ne2 29.Kh1 dc5 30.Bc5 Nd4 31.Bd4 Qd4 32.Qc7 Nd7+/–) 28.Bc1+/– (worse is 28.cb6 Qg4 29.g3 Ne2 30.Kg2 Nf4 31.Kg1 Ne2 32.Kg2 Nf4 33.Kg1=; worse is 28.Qa7 Qg4 29.g3 Ne2 30.Kg2 Nf4 31.Kg1 Ne2 32.Kg2 Nf4 33.Kg1=) 28...Ne2 29.Kh1 Qb5 30.Be3 (worse is 30.cb6 Ng3 31.hg3 Qf1 32.Kh2 Qc1–/+) 30...Nd4 31.Rd1 Qc5 32.Qa7 Qc3 33.Bd5 Qc2 34.Rg1 Ne2 35.Bb3 Qc6 36.Rd1 h6 37.Qa6+/– Nc3 38.Rc1 Qe4 39.Qf1 Ncd5 40.Bc5 Nf4 41.Rd1 Qf5 42.Re1 Re1 43.Qe1 Qg6 44.Qf1 Ne6 45.Qd1 Nd7 46.Be3 Ne5 47.h3 Nf7 48.Qd5 Ned8 49.a4 1–0. Quist,Viggo Bove – Damborg,Benny Falck, DEN–ch corr Denmark, 1989. (=1.c4 f5 2.b4 e5)

4.Be5 Nf6 5.Nf3 Nc6 6.Bc3 d5 (6...Qe7 7.Qc1=) 7.e3 (7.Bb4 Nb4 8.cd5 Qd5=) 7...Be6 (7...Bc3 8.dc3 0-0 9.Nbd2=) 8.Nd4 (8.Bb4!? Nb4 9.Nc3+=) 8...Nd4= 9.Bb4 Nc6 10.Bc3 d4 11.Bb2 0-0 12.d3?? (better is 12.Qb3+= saving the game) 12...de3–+ 13.fe3 Ng4 14.Qd2 (14.Qe2 Qg5 15.Nd2–+) 14...Nge5?? (better is 14...Qg5 15.Bd4 Rfe8–+) 15.Be5 Ne5–/+ 16.Be2 Qh4 17.g3 Qh3 18.Na3 Rad8 19.d4 Ng4 20.Bf3 c6 21.0-0-0 Nf6 22.Qd3 Ne4 23.Rdf1 Ng5 24.Bd1 Qg2 25.Qe2 Qe2 26.Be2 Ne4 27.Kc2 a6 28.Bd3 b5 29.g4 Nd6 30.c5= b4 31.cd6 ba3 32.gf5 Ba2 33.Ra1+/– Bf7 34.Ra3 Rd6 35.Kc3 Rfd8 36.Ra6+/– Kf8 37.Rb1 Rh6 38.Rb2 Rh3+/– 39.e4 c5? 40.d5+– Bd5? 41.ed5 Rd5 42.Rb8 (42.Rb8 Ke7 43.Rb7 Rd7 44.Rd7 Kd7 45.Ra7 Kd6 46.Rg7+–) 1–0. Serrano Pertinez,M (2270) – Arias Velasco,JT (1965), UGA Inverno op, 2002. (=1.c4 f5 2.b4 e5)

4.Be5 Nf6 5.Nf3 d6 6.Bb2 0-0 7.Nc3 Nc6 8.e3 Ne5 9.Be2 Be6 10.0-0 Nc4 11.Qb3 Bc3 12.Bc3 d5 13.Qb7 Nb6 14.Qc6 Qd7 15.Qd7 Nbd7 16.Ne5 Ne5 17.Be5 c5 18.f4 c4 19.a4 Ne4 20.Ra2 Rfc8 21.d3 cd3 22.Bd3 d4 23.Re2 de3 24.Re3 Bc4 25.Bc4 Rc4 26.a5 Rac8 27.g3 Rc2 28.Rb1 Ra2 29.Rb5 Rc1 30.Re1 Re1 White king mated 0–1. Szkodnikow_i_ofiar (1870) – mckenna215 (1885), ChessWorld.net, 2015. (=1.c4 f5 2.b4 e5)

3.a3 Nf6 4.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.a3).

3.Bb2 Nf6 4.b5 Be7 5.e3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4).

3.Qb3 a5 4.b5 b6 5.Nf3 Bb7 6.g3 (6.Nc3 Nf6=) 6...Nf6 (6...g5 7.Bb2 Nf6 8.Bg2=) 7.Bg2= e5 (7...a4 8.Qc2=) 8.0-0 d6 (8...e4 9.Nd4 a4 10.Qc2+=) 9.d4+= e4 10.Ng5 (10.Nh4 Qd7+=) 10...Qe7 11.f3 Nbd7 12.Nc3 h6 13.Nh3 g5 14.fe4 fe4 15.Ba3 (15.Bb2 Bg7+=) 15...0-0-0 (15...Bg7 16.e3=) 16.Rac1 (16.e3 Bg7+=) 16...Qe6 (16...Bg7 17.e3=) 17.e3 (17.d5 Qe8+/–) 17...Kb8 (17...Bg7 18.d5 Qe7 19.Nf2+/–) 18.d5 Qe7 19.Qc2 (19.Nf2 Bg7+/–) 19...Bg7+= 20.Nf2 The pressure on e4 grows (worse is 20.Be4 Ne5 21.Qe2 Neg4=) 20...h5 (20...Rde8 21.Nce4 Ne4 22.Be4+/–) 21.Nce4+/– Ne4 22.Qe4 Ne5 23.Nd3 Rde8+= 24.Ne5 Be5= 25.Rc2 h4 26.Rf5 hg3–+ 27.hg3 Qh7 28.Rg5? Qh2 29.Kf1 Bg3 30.Qf3 Rhf8 31.Rf5 Rf5 32.Qf5 Qh6 33.Bf3 Bc8 34.Qd3 Re3 (34...Re3 35.Qe3 Qe3–+) 0–1. Lehtinen,Heikki – Niemi,Mikko, Tampere We TammerSh, 2006.

3.b5 d5 4.e3 Qf6 5.Nc3 Bb4 6.Bb2 Ne7 7.Nf3 c6 8.a3 Ba5 9.Be2 g5 10.0-0 g4 11.Nd4 Qe5 12.Qc1 Bc7 13.g3 h5 14.Na4 h4 15.Nc6 bc6 16.Be5 Be5 17.Rb1 hg3 18.fg3 cb5 19.cb5 a6 20.Nc5 ab5 21.Bb5 Nd7 22.Ne6 Bb7 23.Nd4 0-0 24.Bd7 Rab8 25.Bf5 Nf5 26.Rf5 Rfc8 27.Qe1 Rc2 28.Nc2 Bc8 29.Re5 Rb1 30.Qb1 Bf5 31.Rf5 1–0. axtur777 – breakyoneckfool, lichess.org, 2019.

3.c5 a5 4.Qa4=+.

3.c5 b6 4.Qc2 (4.Bb2 Nf6=+) 4...bc5 (4...Na6 5.Ba3=+) 5.bc5= Nf6 6.Bb2 (6.d4 Nc6 7.Nf3 Rb8=) 6...Be7 7.e3 0-0 8.a4 (8.Nf3 Nc6=) 8...Bb7 9.a5 Na6 10.d4 (10.Bd4 Bd5=+) 10...Rb8-/+ 11.Nf3 Nb4 12.Qd1 Ne4 (12...f4 13.Bc4-/+) 13.Ba3 Nd5 14.Bc4 d6 15.cd6 Bd6 (15...cd6 16.Nbd2=+) 16.Ne5 (16.0-0 Qf6=) 16...Qe7 (16...c5 17.a6 Ba8 18.0-0=+) 17.0-0= Kh8 (17...c5 18.Nd2 cd4 19.Bd6 Nd6 20.ed4=) 18.a6 (18.Qe2 Ba8 19.Bc1 Be5 20.de5 Qg5=) 18...Ba8= 19.Bd6 (19.Qd3 Nb4 20.Bb4 Rb4=) 19...cd6=+ (worse 19...Qd6 20.Na3 c5 21.Nb5+=) 20.Nd3 Rfc8 21.Qa4?? (21.Bd5 Bd5 (worse 21...ed5 22.Qh5+=) 22.f3 Bb3=+) 21...Rb4 (better 21...Nb6 22.Qa2 Nc4-+) 22.Nb4+= Rc4 23.Qd1?? (better 23.Nd5 Ra4 24.Ne7 Ra1 25.f3+/-) 23...Rb4-+ 24.Nd2 (24.Qc2 Rb8-+) 24...Nec3 25.Qc2 Qc7 26.Rfc1 Qb6 (better 26...Bc6 27.Kh1 Ba4-+) 27.Rab1? (27.Kh1 Rb2 28.Qd3-/+) 27...Nb1?? (better 27...Bc6 28.Kh1 Nb1 29.Qc6 Qc6 30.Rc6-+) 28.Rb1 (28.Qc8 Qd8 29.Qd8) 28...h6 (28...Rb1!? 29.Qb1 Bc6 30.Qb6 Nb6 31.f3-+) 29.Rb4? (better 29.Qc8 Kh7 30.Rc1-+) 29...Qb4 (29...Nb4?! 30.Qc8 Kh7 31.Qa8 Qa6 32.Qf3-/+) 30.h3 Qb8 31.Nb3 (31.Qa4 f4 32.Qa3 fe3 33.fe3 Qb6-+) 31...Nb4 32.Qc3 Nd5 33.Qc4?? (33.Qc2 Nc7 34.Nd2-+) 33...Kh7 (33...Ne3 34.Qe6 Ng2 35.Nd2-+) 34.Na5 (34.Nd2 Nc7-+) 34...Qb6 (34...Qb1 35.Qf1 Qb4 36.Qa1-+) 35.Nb7 (35.Nb3 Nc7 36.Nd2 Bd5-+) 35...Bb7 36.ab7 Qb7 37.Kh2 Qb6 (37...Qb2 38.Kg1-+) 38.Kg3 Qc7 39.Kf3 (39.Qc7 Nc7 40.Kf3-+) 39…Qc4 (39...Qc4 40.g4 Nc3 41.e4 Qe2 42.Kg2 Ne4 43.Kh1 Qf2 44.gf5 Ng3) 0-1. easylife (1775) - kushti (1800), Rated Blitz game, lichess.org, 2014. (=1.c4 f5 2.b4)

3.e3 Bb4 4.a3 Be7 5.Bb2 –/+.

3.e3 Nf6 4.d4 c6 (4...Bb4 5.Bd2 Be7 6.Be2–/+) 5.Be2 d5 (5...Bb4 6.Bd2 Be7 7.Nf3+=) 6.h4 (6.c5 b6+=) 6...Bd6 (6...dc4 7.Bd2 b5 8.Bh5 Nh5 9.Qh5 g6 10.Qe2–/+) 7.h5 Ne4 8.h6 g6 9.c5 Bc7 10.Nf3 0-0 11.Ne5 Be5 12.de5 b6 13.Rh3 bc5 14.f3 Qb6?? (better is 14...Ng5 15.Rg3 cb4–+) 15.fe4= de4? (better is 15...Qb4!? 16.Nd2 fe4=) 16.bc5+/– Qb4? 17.Bd2 Qb2? 18.Bc3 Qb7 19.g4 Nd7? 20.gf5 ef5 21.Nd2 Nc5 22.Bc4 Be6+/– 23.Qc2 Rad8 24.Be6 Ne6 25.a3 a6 26.Rb1 Qa7 27.Qb3 Rfe8 28.Nc4 Kf8 29.Nd6 Re7 30.Qc4 Qc5 31.Qb3 Qd5 32.Qb6 Nc5?? 33.Qd8 Re8 34.Qf6 Kg8 35.Qg7 1–0. playok117 – blusmen, kurnik, 2012. (=1.c4 f5 2.b4 e6)

4.Bb2 Nf6 5.Nf3 (5.b5!?=) 5...ab4=+ 6.ab4 Ra1 7.Ba1 Bb4 8.g3 c5 9.Bg2 Nc6 10.0-0 d6 11.Bc3 h6 (11...e5 12.d3-/+) 12.d4 0-0 13.dc5 (13.Bb4 Nb4 14.dc5 dc5=+) 13...dc5 (13...Bc5 14.Nfd2-/+) 14.Bb4 (14.Qb3 Bc3 15.Qc3 Qd6-/+) 14...cb4 (14...Qd1 15.Rd1 cb4 16.Ne1-/+) 15.Qc2 (15.Qb3 Qc7=+) 15...e5-/+ 16.Rd1 Qe7 17.Nh4 Qf7 18.Bc6 bc6 19.Nf5 (19.Nf3 Nd7-/+) 19...Nh7 (19...b3 20.Nh6 gh6 21.Qb3-+) 20.e4 Ng5 21.Nd6?? (better 21.Nd2 Bf5 22.ef5 Qf5 23.Qf5 Rf5 24.Kf1-/+) 21...Nf3 22.Kg2 Nh4! 23.gh4 Bh3!! A classical mating theme 24.Kh3 Deflection from f3 (24.Kg1 Qg6 25.Kh1 Qg2) 24…Qf3 A beautiful mate combination 0-1. rthurc (2585) – battousai, net-chess.com, 2022.

4.b5 Nf6 5.Bb2 Be7 6.Nf3 0-0 7.Qc2 b6 8.e3 Bb7 9.Be2 Qe8 10.h3 Qg6 11.Rg1 Qh6 12.Nc3 Ne4 13.0-0-0 (13.d3 Nc3 14.Bc3 Bf6=) 13...Bf6 (better is 13...Nf2!? 14.Rdf1 Ne4–/+) 14.Rdf1= d6 15.Nd4 Nd7 16.g4 Ndc5 17.f4 Nc3 18.Bc3 Qh3 19.g5 Be4 20.gf6 Bc2 21.Rg7 Kh8 22.Kc2 Ne4 (better is 22...c6!?+=) 23.Ne6+= Nc3 24.Ng5 (24.Nf8 Rf8 25.Kc3 Qh4 26.Rc7 Qf6 27.Kc2 Rf7 28.Rc8 Rf8+/–) 24...Qh6 25.Rh7 Qh7 26.Nh7 Kh7 (worse is 26...Ne2 27.Nf8 Rf8 28.Rf2+–) 27.Kc3 Rf6 28.Kd4 Kg7 29.Kd5 Rh8 30.Bd3 Rh2 31.Rd1 Rf7 32.a4 Kf6 33.Kc6 Rg7 34.Bb1 Ke6 35.e4 fe4 36.Be4 Rf2 37.f5 Ke5 38.d3 Ra2 39.Rh1 Ra4–/+ 40.Rh6 Rc4 41.dc4 Ke4 42.f6 Rf7–+ 43.Rh5 Kd4 44.Rg5 Kc4 45.Rg4 Kd3 46.Rg7 Rf6 47.Rc7 d5! 48.Kd5 Rf5 49.Kc6= Rf6 50.Kb7 a4 51.Rc6 Rf1 52.Rh6 a3–+ 53.Rh2 Kc4 54.Kb6 Rb1?? 55.Kc6= Rb2 56.Rh4 Kc3 57.b6 Rb6 58.Kb6 a2 ½–½. Maze,Sebastian (2560) – Bonafede,Alessandro (2340), XXXVII Citta di Cagliari, 2012. (=1.c4 f5 2.b4 e6)

3.a4 c6 4.Bb2 d5 5.cd5 cd5 6.e3 e6 7.Nf3 (7.b5 Bd6=) 7...Be7 (7...Bb4!? 8.Ba3 Ba3 9.Ra3 Qa5-/+) 8.Bb5 Bd7 9.Bd7 Nbd7 10.0-0 (10.Nd4 Qb6 (10...Bb4? 11.Ne6 Qe7 12.Nc7 Kf7 13.Na8+-) 11.b5 a5=) 10...0-0 (10...Bb4 11.Qb3 Qa5 12.Bf6 gf6 13.Rc1-/+) 11.Nc3 (11.Nd4 Qb6 (11...Bb4? 12.Ne6 Qe7 13.Nf8 Rf8 14.Nc3+-) 12.b5 Nc5=) 11...Rc8 (11...Bb4!? 12.Rb1 Ne4-/+) 12.Nd4= Kf7 (12...Bb4? 13.Ne6 Qb6 14.Nf8 Bf8 15.Nb5+-) 13.f3 (13.b5 Nc5=) 13...Bd6 (13...Bb4 14.Rb1-/+) 14.f4 (14.Ncb5 Bb4 15.Na7 Ra8=) 14...Re8 (14...Bb4 15.Rb1-/+) 15.d3 (15.Ncb5 Bb4 16.Na7 Ra8=) 15...Qe7 (15...Bb4 16.Ncb5 a6 17.Na3-/+) 16.e4? (16.Ncb5 Bb4 17.Na7 Ra8=) 16...fe4 (16...Bb4!? 17.Ncb5 Bc5-/+) 17.de4=+ de4 (17...Bb4 18.ed5 Bc3 19.de6 Kg8 20.ed7 Qd7 21.Bc3 Rc3 22.Nf3=+) 18.f5= e5 (18...Nf8 19.fe6 A) 19...Ne6 20.Ne4 Qc7 21.Ne6 Re6 22.Ng5 Ke7 23.Ne6 Ke6 24.Rc1 Qb6 25.Bd4 Rc1 26.Qb3 Nd5 A1) 27.Rc1? Qd4 28.Kh1 Qh4-+ (28...Bb4?! 29.Qh3 Ke7 30.Qc8-+; 28...Qb4?! 29.Qh3 Ke7 30.Qh7-/+); A2) 27.Qh3 Ke7 28.Bb6 Rf1 29.Kf1 ab6 30.Qf3 Nb4 31.Qb7 Kf6 32.Qb6+-; B) 19...Kg8=) 19.Ndb5?? (better 19.Qb3 Kf8 20.Ne6 Kg8 21.Ng5 Kf8 22.Nce4 Bb4 23.Rac1 Rc1 24.Rc1+/-) 19...Bb4-+ 20.Nd5?? (20.Ne4 Ne4 21.Qd5 Kf8 22.Qe4 a6-+) 20...Nd5 (better 20...Qc5 21.Kh1 Qd5-+ (21...Nd5?! 22.Rc1 Ne3 23.Qh5 Kg8 24.Rc5 Bc5 25.Re1-/+)) 21.Qd5 Kf8 22.Qe4 Bc5 23.Kh1 b6 (better 23...Nf6 24.Qh4 a6-/+) 24.Na7= Rc7 25.Nb5 Rcc8 26.Rad1 Nf6 27.Qc4 Rcd8 28.Rde1 Rd2 29.Be5 Qd7 30.Bf6 gf6 (30...Re1!? 31.Re1 gf6+/-) 31.Re8+- Qe8 32.Qh4 Qe2 33.Qf6 Ke8 (better 33...Kg8 34.Qe6 Qe6 35.fe6 Re2+-) 34.Nc7?? (better 34.Qe6 Qe6 35.Nc7 Ke7 36.Ne6+- (36.fe6?! Kd6+=)) 34...Kd7-/+ 35.Qf7 Kc6 36.Ne6?? (better 36.Qe6 Kc7 37.Qe2 Re2 38.g3-/+) 36…Qg2 (36...Qf1) 0-1. Thiago (1835) - narre (1610), Rated Blitz game, lichess.org, 2014. (=1.c4 f5 2.b4)

3.a4 e5+= 4.Nc3 (better is 4.b5!?+=) 4...Bb4–+ 5.Ba3 Bc3 6.dc3 d6 7.c5 0-0 (better is 7...d5–+) 8.cd6= cd6 9.e3 (better is 9.Bd6!? Re8 10.Qb3 Be6 11.Qa3-/+ (11.Qb7?? Qd6 12.Rd1 Qa3–+)) 9...Ne4 10.Qc2 (10.Bd3!? Qc7 11.Ne2-/+) 10...Be6 11.Nf3 Nc6 12.Bb5 Qc7 13.0-0 Rfc8 14.Rac1 a6 (better is 14...Na5!?–+) 15.Bd3-/+ d5 16.Be4 (16.c4 Rd8-/+) 16...fe4 17.Nd2 h6 18.Bb2 (18.c4 Na5-/+) 18...Qf7 (18...Nb4 19.Qb3 Nd3 20.Rb1–+) 19.c4 d4 (better is 19...Nb4 20.Qb1 dc4 21.Ne4 Qd7–+) 20.Qe4+= Bf5 21.Qf3 d3 (better is 21...Rf8!?+=) 22.e4+/- Bg6 23.Qf7 (23.Qd3!? Qf4 24.g3+/-) 23...Bf7= 24.f4 ef4 25.Rf4 Na5 26.c5 Rc6 27.h3 Nb3 (better is 27...Rd8=) 28.Nb3?? (better is 28.Rf7 Nc1 29.Rg7 (29.Rb7?! Ne2 30.Kf2 g5=) 29...Kf8 30.Rb7 Ne2 31.Kf2+/-) 28...Bb3-/+ 29.a5?? Bc2 30.Rcf1 Rc5 31.Rf7-/+ Rg5 32.e5 Re8 33.Re1?? Re6 34.Rb7?? d2–+ 35.Rf1 d1Q 36.Rd1 Bd1 37.g4 Bf3 38.Kf2 Bb7 0–1. clio50 – veze, kurnik, 2013. (=1.c4 f5 2.b4)

3.a4 e6 4.c5 (4.Ba3 d5=+) 4...b6 (4...a5!?-/+) 5.d4 d5 6.e3 Be7 7.Nf3 0-0 8.Ne5 (8.a5 bc5 9.bc5 Ne4=) 8...Ne4 (8...a5 9.cb6 Bb4 10.Nd2=+) 9.b5 (9.Ba3!?=) 9...bc5=+ 10.f3 Nf6 11.Nc3 cd4 12.ed4 Bb7 13.Be2 Nbd7 14.0-0 Ne5 15.de5 Nd7 16.f4 c5 17.Rf3 (17.bc6 Bc5 18.Kh1 Bc6=+) 17...d4 18.Rh3 (18.Rd3 A) 18...dc3? 19.Rd7 c2 20.Qd2+- (20.Rd8?! cd1Q 21.Rd1 Bd5+=); B) 18...Qc7-/+) 18...dc3-+ 19.Bc4 Bd5! 20.Bd5 ed5 21.Qd5 Rf7?? (21...Kh8 22.a5-+) 22.Qf3?? (better 22.e6 Rf6 23.ed7 (worse 23.Qd7 Qd7 24.ed7 Rd6=+) 23...Kh8 24.Re3+- (24.Rc3 Rd6 25.Qf5 Bf6=+)) 22...Rc8?? (22...Nb6!? 23.Be3-+) 23.Qc3? (better 23.e6!? Rf6 24.ed7 Qd7 25.Qc3 Qd1 26.Kf2=+) 23...Qb6 24.Be3 Qe6 25.Re1 Nb6 Black prepares the advance c4 26.a5 Nd5 27.Qb3?? (27.Qc4 Rff8-+) 27...Qd7 (27...c4!? 28.Qd1 Bb4 29.Rf1-+) 28.b6? (better 28.Qc4 Ne3 29.Rhe3-+) 28...Ne3 (better 28...c4 29.Qb2 ab6 30.Bb6 Nf4-+) 29.Rhe3?? (better 29.e6 Qd5 30.ef7 Qf7 31.b7+- (worse 31.Ree3 Bf6+-)) 29...c4 30.Qc2? (30.e6 Qe6 (30...cb3 31.ed7 Rd8 32.Re7 Rd7 33.Rd7 Rd7 34.Rb1+-) 31.Qb5 Qd6 32.ba7 Bf8-+) 30...Qe6 (30...Bc5!? 31.Qc3-+) 31.Kh1 ab6 32.ab6 Bc5 33.Rc3 Bb6 34.Rc1 (34.Rd1 Ra7-+) 34...Rb7 (better 34...Rd7-+) 35.Rc4 Rc4 36.Qc4 Qc4 37.Rc4 Kf7 38.Rc1? (38.h3-+) 38...Be3 39.g3 (39.Rf1 Bf4 40.g3 Be5 41.Rf5 Ke6 42.Rf2-+) 39...Bc1 40.Kg2 Ke6 41.h4 Rb2 42.Kf3 h6 (42...g6 43.g4 Rb3 44.Ke2 fg4 45.Kd1 Bf4 46.Kc2 Re3 47.Kd2 g3 48.Kd1 g2 49.Kc2 g1Q 50.h5 Qf2 51.Kd1 Rd3) 43.g4 fg4 44.Kg4 Rb4 45.Kf3 Rf4 46.Ke2 Rh4 (46...g5 47.hg5 hg5 48.Kd3 g4 49.Kc3 g3 50.Kc2 g2 51.Kd3 g1Q 52.Kc2 Qg2 53.Kc3 Qd2 54.Kb3 Rb4) 47.Kd3 Bf4 (47...g5 48.Kc2 Rh2 49.Kb3 Rb2 50.Kc4 g4 51.Kc3 g3 52.Kd4 g2 53.Kc5 g1Q 54.Kc4 Ke5 55.Kd3 Qd4) 48.Kc2 Be5 49.Kb3 Rg4 50.Kc2 ½-½. BEYASOM (1660) - kushti (1610), Rated Blitz game, lichess.org, 2013. (=1.c4 f5 2.b4)

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.c4).

3.Nc3 e5 4.b5 a6 5.g3 (5.Qa4!?=+) 5...ab5-/+ 6.cb5 d5 7.Nf3 (7.Bg2!? d4 8.Nb1-/+) 7...d4-+ 8.Nb1 e4 9.Ng1 (9.Nh4 Be6-+) 9...Bc5 10.a4 0-0 11.Nh3 d3 (better is 11...Qd6-+) 12.ed3? (better is 12.e3-+) 12...Re8 13.Qb3 (13.d4 Qd4 14.Qb3 Be6 15.Qb2-+) 13...Be6 14.Qc2 ed3 15.Qc3 (15.Qc5 Bd5 16.Qe3 Bh1 17.Nf4-+) 15…Bb3 (15...Bb3 16.Qe5 Re5 17.Be2 Re2 18.Kf1 Qd5 19.Rg1 Qe4 20.f3 Qf3 21.Nf2 Qf2) 0-1. pbraham (1880) - chriscooperden (2125), gameknot.com, 2017.

3.Nc3 e6 4.a3 Ne4 (4...a5 5.b5=) 5.Ne4+= fe4 6.Bb2 d5 7.e3 Nc6 8.Nh3 a5 9.b5 Na7 10.Rc1 dc4 (10...Kf7 11.Qh5 Kg8 12.cd5+–) 11.Rc4+– Nb5?? (better is 11...c6 12.bc6 Nc6 13.Re4 Qd5+–) 12.Qh5 g6 13.Qb5 c6 14.Qb3 b5 (14...Rg8+–) 15.Rc6 Bd7 (15...Qd5 16.Qd5 ed5 17.Bb5+–) 16.Re6 Be6 (16...Be7 17.Bh8 a4 18.Qd5 Be6 19.Qe6+–) 17.Qe6 Be7 18.Bb5 Kf8 19.Bc4 Bf6 20.Qf7 1–0. glovio (1620) – lady, gameknot.com, 2013.

3.Nc3 g6 4.Bb2 (4.Nf3 Bg7=) 4...Bg7 5.g3 (5.Nd5 e6 6.Bf6 Bf6 7.Nf6 Qf6=) 5...0-0 6.Bg2 e5 7.Nf3 e4 8.Nd4 Nc6 9.Nc6 bc6 (9...dc6 10.0-0=) 10.0-0 d5 11.cd5 (11.d3 a5 12.Qa4 d4=) 11...cd5 12.a3 c6 (12...a5 13.Qa4=) 13.Rb1 (13.Na4 a5=) 13...Ba6 (13...a5 14.ba5 Qa5 15.d4=) 14.Qb3 (14.Na4 Bc8+=) 14...Bc4 15.Qc2 a5 16.d3 ed3 (16...ab4 17.ab4 Ba6 18.Na4 ed3 19.ed3 Bd3 20.Qd3 Ra4 21.b5 cb5 22.Bf6 Qf6 23.Bd5 Kh8 24.Qb5=) 17.ed3 Ba6 (17...ab4 18.dc4 bc3 19.Bc3=) 18.b5 cb5 19.Ba1 (19.Nb5 Rb8 20.Nc7 Rc8=) 19...Rb8 (19...Qd7 20.Qb3 a4 21.Bd5 Nd5 22.Qd5 Qf7 23.Qf7 Kf7 24.Na2=) 20.Qb3 The pressure on the isolated pawn grows (20.Nd5 Nd5 21.Qa2 b4 22.Bd5 Kh8=) 20...b4 (better 20...a4 21.Bd5 Kh8=) 21.ab4 (21.Nd5 Nd5 22.Bd5 Kh8 23.ab4 Ba1 24.Ra1 Rb4 25.Qc3 Qf6 26.Qf6 Rf6 27.Ra5 Rfb6+=) 21...ab4 (better 21...Rb4 22.Qc2 Qd6-/+) 22.Nd5= Kh8 (22...Nd5 23.Bd5 Kh8 24.Bg7 Kg7 25.Ra1=) 23.Nf6 (better 23.Nb4!? Bb7 24.Nc6 Bc6 25.Qb8 Qb8 26.Rb8 Rb8 27.Bc6+/-) 23...Bf6= 24.Bf6 Qf6 25.Qd5? (better 25.Rfe1 Qc3 26.Bf1=) 25...Rfd8-+ 26.Qc6? (better 26.Qc5 Bd3 27.Rb4 Rb4 28.Qb4 Bf1 29.Bf1-+) 26...Bd3 (better 26...Qc6 27.Bc6 Bd3-+) 27.Qf6+- Kg8 1-0. cocoarg (1885) - GeorgeWBush (1755), Rated Bullet game, lichess.org, 2013.

3.e3 e6 4.a3 c6 5.d4 d5 6.g3 Bd6 7.Nd2 0-0 8.Bg2 Nbd7 9.Ngf3 Ne4 10.–0 Rf6 11.Bb2 Rh6 12.Rc1 Ndf6 13.Qc2 Ng4 14.cd5 ed5 15.Nb3 Qe8 16.Nc5 Qh5 17.Ne4? (17.h3 Bg3 18.fg3 Ne3 19.Qe2 Nf1 20.Qf1 Ng3 21.Qf2–+) 17...fe4–+ (17...de4?! 18.Nh4 Nh2 19.Rfd1–+) 18.Nh4 g5 (18...Nh2 19.Rfe1–+) 19.h3 gh4 20.hg4 Bg4 (worse is 20...Qg4 21.f4 h3 22.Be4 de4 23.Kh1–+) 21.Rfe1 (21.Be4 hg3 22.fg3 de4 23.Qg2–+) 21...Bf3 22.b5 hg3 (22...h3 23.Qd1 hg2 24.Qf3 Qh2) 23.fg3 (23.Bh3 Qh3 24.fg3 Qg3 25.Qg2 Qg2) 23...Bg3 24.Red1 (24.Bh3 Qh3 25.Qh2 Qh2 26.Kf1 Qg2) 24...Qh2 (24...Qh1 25.Bh1 Rh1) 25.Kf1 Rf8 (25...Rf8 26.Qf2 Bg2 27.Ke1 Rf2 28.bc6 Rb2; 25...Qh1 26.Bh1 Rh1) 0–1. barborski – f4s, kurnik, 2013.

3.Nf3 g6 4.Bb2 Bg7 5.c5 0-0 6.Qb3 e6 7.e3 Nc6 8.Bc4 Kh8 9.0-0 d5 10.Bd3 a6 11.Rc1 b6 12.cb6 cb6 13.Qa3 Bd7 14.Nc3 Qe7 15.Na4 b5 16.Nb6 Ra7 17.Nd7 Qd7 18.Rc2 a5 19.Bb5 Rc8 20.Bc6 Rc6 21.Ne5 Rc2 22.Nd7 Nd7 23.Bg7 Kg7 24.Qa4 Rd2 25.b5 Nc5 26.Qa3 Rc2 27.b6 Ra6 28.Rb1 Ra8 29.Rc1 Rc1 30.Qc1 Na6 31.Qc6 Rb8 32.b7 Kf6 33.Qa6 Black resigned 1–0. Cookie boy (1745) – mckenna215 (1890), ChessWorld.net, 2013. (=1.c4 f5 2.b4 Nf6)

3.g4 Ng4!? 4.h3 Ne5-/+.

3.g4 g6 4.g5= Nh5 5.f4 (5.Bb2 Bg7 6.Bg7 Ng7=) 5...d6 (5...Nf4 6.Bb2 Rg8 7.Nf3=+) 6.Nf3 (6.Bb2 e5 7.e3 Bg7=) 6...Bg7 7.e4?? (better 7.d4!?=+) 7...0-0 (better 7...Ba1 8.ef5 Bf5-+) 8.Nc3? (better 8.e5 Nf4 9.d4-+) 8...fe4 (8...Nf4?! 9.d4-+) 9.Nh4 Nf4 10.Qg4 (10.Qc2-+) 10…Bg4 0-1. BytFF (1770) - kassanen (1760), Rated Bullet game, lichess.org, 2020. (=1.c4 f5 2.b4)

4.a3 b6 5.Bg5 Bb7 6.Nc3 h6 7.Bf6 Qf6 8.e3 c5 9.bc5 bc5 10.Nf3 Nc6 11.Be2 Be7 12.0-0 0-0 13.d5 (better is 13.Qd3=) 13...Qc3–/+ 14.dc6 Bc6 15.Rc1 Qf6 16.Qd2 g5 17.Rb1 Rab8 18.Qc2 Bd6 19.Rfd1 Bc7 20.Qa2 1–0. Taroak – Sixty4, playchess.de, 2005.

4.e4? Bb4 5.Bd2 Bd2 6.Nd2 fe4-+.

4.e4? g6?? 5.ef5 (better 5.e5 Bb4 6.Bd2 Bd2 7.Nd2=) 5...Bg7?? (5...Bb4 6.Bd2 Bd2 7.Nd2 gf5 8.Ngf3=+) 6.f4?? (better 6.fg6 Qe7 7.a3+-) 6...ef5=+ 7.g4? (7.Be2!?=+) 7...0-0 (7...Ng4!? 8.Nf3 Nc6-+) 8.gf5-/+ Re8 (8...Ne4 9.Nf3 Qe7 10.Qe2 Qb4 11.Nbd2 gf5 12.Rg1=+) 9.Be2=+ Ng4 (9...Qe7!? 10.Nf3 Qe4=+) 10.Nf3= gf5 11.h3 Nf6 12.Kf2 (12.Rg1!?=) 12...Ne4=+ 13.Kg2 Bf6 (13...Nc6 14.c5 Kh8 15.Rg1-/+) 14.Kh2 (14.Rg1 Kh8=) 14...Bh4 (better 14...Qe7 15.Rg1 Kh8=) 15.Nbd2?? (better 15.Rg1 Kf8 16.Rg2+=) 15...Bg3-+ 16.Kg2 Kf7?? (better 16...Nc3 17.Kg3 Nd1 (17...Re2?! 18.Qb3 Re3 19.Rg1+=; 17...Ne2?! 18.Kh2=) 18.Bd1 Qe7-+) 17.Ne4+- Rg8 (17...Rg8 18.Ng3 Kf8+-). captenpolip (1645) - AceMove3 (2000), Rated Bullet tournament, lichess.org, 2014.

4.Nf3 Bb4–/+ 5.Bd2 Bd2 6.Qd2 0-0 7.Nc3 c6 8.e3 d5 9.c5 (9.Bd3 Ne4 10.Qb2 b6+=) 9...Ne4 10.Bd3?? (10.Ne4 fe4 11.Ne5 Nd7 12.Nd7 Bd7–/+) 10...Nd7 (10...Nd2 11.Nd2 b6 12.Nb3–+) 11.Ne5?? (better is 11.Qc2–/+) 11...Ne5 (better is 11...Nd2 12.Nd7 Bd7 13.Kd2–+) 12.de5 (12.Be4 Nc4 13.Qc1 fe4 14.Ne4 Qa5 15.Nc3–+) 12...Qa5 (better is 12...Nd2 13.Kd2 d4–+) 13.Ne4+– Qa6?? (13...Qc7 14.Nd6 b6+–) 14.Ba6 1–0. dick54 – jason64, playok.com, 2012. (=1.c4 f5 2.b4 Nf6)

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

4.Qb3 Be7 5.Nc3 b6 (5...Nc6 6.b5 Na5 7.Qa4=) 6.Bb2 (6.b5 d6+=) 6...0-0 7.e3 c5 8.b5 d6 9.Be2 Ne4 10.0-0 Nc3 11.Bc3 Nd7 12.h3 Bb7 13.Rfe1 e5 14.d4 e4 15.Nd2 Bh4 16.g3 Bf6 17.a4 a5 18.ba6 Ra6 19.a5 Qe7 20.Qb2 Rb8 21.Nb3 ba5 22.Na5 Bd5 23.Qc2 Bf7 24.Reb1 Qd8 25.Rb8 Qb8 26.Rb1 Qc8 27.Rb5 Be8 28.Kg2 h6 29.Qb2 Qa8 30.Qb3 Kh7 31.Qb1 Qd8 32.h4 Qa8 33.h5 Bf7 34.g4 Be6 35.d5 Bd5 36.cd5 Bc3 37.Rb7 Ra5 38.Rd7 Qd5 (better is 38...Ra2!? 39.Qb6 f4=) 39.Qb8= Ra8 40.Rd6 Rb8 41.Rd5 f4 42.ef4 Bd4 43.Rd7 Rb2 44.Kf1 Rb1 45.Kg2 ½–½. fenek (2225) – rekees (2310), gameknot.com, 2014. (=1.c4 f5 2.b4 Nf6)

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.d3).

3.d4 e6 4.a3 Be7=.

3.e3 e5 4.a3+=.

3.e3 e6 4.a3= c5 (4...d5=) 5.h3 (5.Bd2!?=) 5...cb4–/+ 6.ab4 (6.Nf3 d5–/+) 6...Bb4 7.c3 Ba5 (7...Be7 8.Nf3–/+) 8.Qa4 (better is 8.g4–/+) 8...Nd5?? (better is 8...Nc6–/+) 9.Qa5+– Qa5 10.Ra5 Nc6 11.Ra1 a5 12.c4 (12.Nf3 b5+–) 12...Ndb4 13.Na3 0-0 (13...d6 14.Nf3+–) 14.Bd2 (14.Nf3 d6+–) 14...f4 (14...e5 15.Bb4 ab4 16.Nc2 Ra1 17.Na1+–) 15.Rb1 (15.ef4!? Nd4 16.Rb1 d6+–) 15...fe3 16.Be3 Ne5 (16...d5 17.Nf3+–) 17.Be2 (better is 17.d4!? Nf7+–) 17...Ned3 18.Bd3 Nd3 19.Ke2 Nb4 (19...Nf4 20.Bf4 Rf4 21.Nf3+–) 20.Nf3 (20.Nb5 Nc6+–) 20...d5 21.cd5 (21.Rhd1!? Bd7+–) 21...ed5+/– 22.Rhd1 (22.Nd4 Bf5 23.Rb3 Be4+/–) 22...Re8 (22...Bf5 23.Rb3+/–) 23.Kf1 (23.Nb5 Bf5 24.Rbc1 Be4+/–) 23...h6 (23...Bf5!? 24.Rb3 Rac8+/–) 24.Nb5 Na6? (better is 24...Bf5!? 25.Rb4 ab4+/–) 25.Rd5 (25.Nd6 Rd8 26.Nc8 Rac8 27.Rb7 a4+–) 25...Be6 (25...Nb4 26.Rh5 g6 27.Rh6+–) 26.Rd4 a4 (26...Re7 27.Nd6 Nb4 28.Re4+–) 27.Nd6 (27.Ra4 Bf5 28.Rb2 Bd3 29.Ke1 Rad8+–) 27...Re7? (27...Red8 28.Nb7 Rd4 29.Bd4+–) 28.Rb7 (better is 28.Ra4 Bd5+–) 28...Rb7 29.Nb7 Rb8 (29...a3 30.Rd8 Rd8 31.Nd8+–) 30.Nd6 (30.Nd8 Rb1 31.Ke2 Bb3+–) 30...Rb1 (30...a3 31.Ra4 a2 32.Ra6 Rb1 33.Ke2+–) 31.Ke2 a3 32.Ra4 a2 33.Bd4 Nc5 (33...Nc7 34.Ra7 Rc1 35.Kd2+–) 34.Bc5 (better is 34.Ra8!? Kh7 35.Ra7 Nb3 36.Bg7 Kg8+–) 34...a1Q 35.Ra1 Ra1 36.Nd4 (36.Nd2 Rg1 37.Kf3 g5+–) 36...Ra2 (36...Bd5 37.g3+–) 37.Ke3 Bd7 (37...Bd5 38.g3+–) 38.h4 h5 39.g3 Ra5 (39...Ra1 40.f3+–) 40.Bb4 (40.Nb3 Ra2+–) 40...Ra4 41.Bd2 (41.Bc3 Ra3 42.Kd3 Ra6+–) 41...Ra3 (41...Kf8 42.Ke4+–) 42.Kf4 (42.Ke4 Ra2 43.Be3 Kf8+–) 42...Ra4 (42...Ra2 43.Be3+–) 43.Be3 Kf8 44.Kg5 (44.Nb7 Bg4+–) 44...Ra5 45.Kg6 Rd5 (45...Ra6 46.Bf4+–) 46.N6f5 (46.N4f5!? Ba4 47.Bd4 Bc2 48.Bg7 Kg8+–) 46...Be8 47.Kh7 g6 48.Ne6 (48.Ng7 Bf7+–) 48...Kf7 49.Nfd4 Kf6 (49...Rd6 50.Ng5 Ke7 51.Ne4+–) 50.Bg5 Ke5 51.f4 (51.Ng7 Bf7 52.Nc6 Ke4+–) 51...Ke4 (51...Kd6+–) 52.Kg7 (better is 52.Ng7 Bf7 53.Nc6+–) 52...Rd4+= 53.Nd4 Kd4 54.Kf6 (54.Be7!?+=) 54...Ke4= 55.Ke7 Ba4 (55...Bb5 56.Ke6=) 56.Kf6 (56.Kd6 Bc2=) 56...Be8 57.Ke7 Ba4 58.Kf6 (58.Kf7 Kf5=) 58...Be8 ½–½. pillsbury – olo, net–chess.com, 2017.

3.Nf3 e5=.

3.h3 d5 4.c3 (4.d4 Qd6+=) 4...e5 5.Nf3 e4 (5...Bd6 6.Bg5–/+) 6.Nh2 (6.Nd4 a5 7.ba5 Ra5+=) 6...c5 (6...Bd6 7.de4 fe4 8.Bg5–/+) 7.Qa4 (7.a3 Be6+=) 7...Bd7–/+ 8.b5 Be7 (8...Bd6 9.Bg5–/+) 9.e3 (9.Bf4 0-0–/+) 9...a6 (9...Bd6 10.Bb2–/+) 10.c4 dc4 11.dc4 0-0 (11...Bd6 12.Bb2–/+) 12.Be2 Be6 13.0-0 Nbd7 14.ba6 Ra6 15.Qc2 Nb6 (15...Qa8 16.Nc3–/+) 16.Nd2 Nfd7 17.a4 (17.f3 Bg5 18.fe4 Be3 19.Kh1 Bd4+=) 17...Ne5 (17...Qa8 18.f3 Na4 19.Ra3–/+) 18.Bb2 Nd3 19.Bd3? (better is 19.Bc3+=) 19...Qd3–+ (19...ed3?! 20.Qb3=) 20.Qc3 White prepares a5 (20.Rfc1 Na4! 21.Be5 Rd8–+) 20...Qc3 21.Bc3 Nc4 22.Nc4 Bc4 23.Rfb1 (23.Rfd1 b6–+) 23...Bd5 (23...b6 24.Nf1–+) 24.a5 c4 (24...Rd8 25.Nf1–+) 25.Rd1 Bc6 (25...Rd8 26.Nf1–+) 26.Rd4 Bf6 (26...Rfa8 27.Rc1–+) 27.Rc4–/+ Bc3 (27...Bd5!? 28.Rc7 Bc3 29.Rc3 b6–/+) 28.Rc3+= Rd8 29.Nf1 Rd5 Attacks the isolani on a5 30.Rc2 (better is 30.Rca3!?+=) 30...Rda5–+ 31.Ra5 Ra5 32.Nd2 Kf7 (32...Bd5 33.g4 g6 34.g5–+) 33.Nc4 (33.Nb3 Ra6–/+) 33...Ra1–+ 34.Kh2 g6 (better is 34...Ke6–+) 35.Ne5+= Ke6 36.Nc6 bc6 37.Rc6 Kf7 (37...Ke5 38.Rc7 Ra2 39.Kg3=) 38.Kg3 (38.Rc7 Kg8+=) 38...h6= 39.f3 ef3 40.Kf3 Rf1 41.Kg3 Kg7 42.Rc4 Re1 43.Rc3 (43.Kf4 Kf6=) 43...Kf6 44.Kf2 Rd1 (44...Rb1 45.g4=) 45.h4 (45.Rc6 Kg5=) 45...h5 (45...Ke5 46.Rc5 Rd5 47.Rc8=) 46.Rc4 (46.Rc6 Kg7=) 46...Rd2 47.Kf3 Rd5 48.g3 Re5 49.Rd4 Kf7 50.Kf4 Kf6 51.Rd6 Re6 52.Re6 Ke6 53.e4 fe4 54.Ke4 Kf6 55.Kf4 Kg7 56.Kg5 Kf7 57.Kh6 Kf6 58.Kh7 Kf5 59.Kh6 Kf6 ½–½. neilo – delightful_porridge, ChessWorld.net, 2016.

3.h3 e5 4.a3+=.

3.e3 e5!? 4.Nf3 Nd7=.

3.e3 Nf6 4.c3 e6 5.Nf3 Be7 6.Bd3 0-0 7.0-0 Nbd7 8.b5 Ne4 9.c4 c6 10.a4 dc4 11.Bc4 Nb6 12.Bd3 cb5 13.ab5 Nd5 14.Ba3 Ba3 15.Na3 Ndc3 16.Qb3 b6 17.Rfc1 Nd5 18.Nc4 Bb7 19.Nce5 Rf6 20.Nc6 Bc6 21.Rc6 Rh6 22.Bc4 g5 23.Re6 Black resigned 1–0. David Lonsdale (2460) – arvek (1810), ChessWorld.net, 2013.

3.e3 g6 4.Nf3+= Nd7 5.c3 Ngf6 6.c4 c6 7.c5 Bg7 8.Be2 0-0 9.Ng5 Nb8 10.0-0 e6 (10...e5 11.de5 Ng4 12.Nf3+=) 11.Bd2 (11.Nf3 Nfd7+=) 11...Ne4= 12.Ne4 fe4 13.f3 Qc7 (better is 13...ef3!? 14.Bf3 e5=+) 14.fe4+/– de4 15.Qc2 Nd7 (15...Rf1 16.Bf1 b5 17.Qe4+–) 16.Nc3+– Nf6 17.Ne4 Bd7 18.Bd3 (18.Nd6!? Nd5+–) 18...Ne4 19.Be4 e5 20.d5 cd5 21.Bd5 Kh8 22.e4 Rf1 23.Rf1 Rf8 24.Qc1 Bc6 25.Rf8 Bf8 26.Bh6 Bh6 27.Qh6 Qd8 28.Bc6 (28.Qd2!? Kg7+–) 28...bc6 29.h3 Kg8 (29...Qd4 30.Kh2 Kg8 31.Qh4+/–) 30.Qe3 Qb8 31.a3 Qd8 32.Kf2 Qf6 33.Ke2 Qd8 (33...Qf7 34.Qf3+–) 34.g3 Qd7 35.g4 Kg7 36.Qd3 Qe6 37.Qc2 Qe7 38.Qc3 a6 39.Qd3 Qa7 40.Qd6 a5 41.Qe5 Kg8 42.Qe8 Kg7 43.Qc6 ab4 44.a4 b3 45.Qb5 Qc7 46.Qb3 Qh2 47.Kd1 Qg1 48.Kc2 Qc5 49.Qc3 Qc3 50.Kc3 Kf7 51.a5 (51...Kf6 52.Kd4+–) 1–0. zggenev – halo2, ChessWorld.net, 2005.

3.f4 Nc6 4.c3 (4.b5 Na5=) 4...Be6 (4...Nf6 5.Nd2=+) 5.e3 Bf7 (5...Nf6 6.Nf3=) 6.Qa4 Qd6 (6...e6 7.Nf3=) 7.b5 Nd8 (7...Nb8 8.Bd3 Nd7 9.Nf3+–) 8.Ba3 (8.Nf3+–) 8...Qg6?? (better 8...Qe6 9.Bc1 Qd6=) 9.Nf3+– Qf6 (9...Qb6 10.Ne5 Nf6 11.Bc5+–) 10.c4 (10.Ne5!? b6 11.c4 Nh6+–) 10...e6 11.Bf8 (11.b6 c6 12.Bf8 Kf8 13.Qa7 Rc8+– (13...Ra7?? 14.ba7 Qe7 15.a8Q+–)) 11...Kf8 12.Ne5 Ne7?? (better 12...Qh4 13.g3 Qe7+–) 13.Nd7+– Kg8 14.Nf6 gf6 15.c5 c6 (15...Bh5 16.Nc3+–) 16.b6 Bg6 (16...a6 17.Be2+–) 17.Nd2 (better 17.Qa7 Rc8+–) 17...Nf7 (17...a6 18.Be2+–) 18.ba7 Nc8 19.Nb3 (19.Qa5 Kg7+–) 19...Ra7 20.Qb4 (20.Na5 Kg7 21.Rb1 Nd8+–) 20...Nh6 21.h3 Ne7 (21...Kg7 22.Be2+–) 22.a4 (22.Qb6 Ra3 23.Na5 Kf7 24.Nb7 Rha8+–) 22...Ra8 (22...Kg7 23.Be2+–) 23.a5 (23.Na5 Kf7+–) 23...Kg7 (23...Kf7 24.Be2 Rhb8 25.g4 fg4 26.hg4+–) 24.Qb7 Rhe8 25.Qb4 Rab8 (25...Reb8 26.Qc3+–) 26.Qc3 Bh5 27.a6 Ra8 28.Qa5 Rab8 29.Rb1 e5 30.a7 Ra8 31.de5 fe5 32.fe5 Ng6 33.Nd4 Ne7 34.Rb7 (better 34.Ne6 Kh8 35.Nc7 Ra7 36.Qa7 Rf8+–) 34...Kf8 35.Kd2 (35.Ne6 Kg8 36.Nc7 Ra7 37.Qa7 Nc8+–) 35...Kf7 36.Nc6 Nhg8 37.Nd4 Kf8 38.c6 (better 38.Bb5!? Rec8 39.Bd7 Kg7 40.Bc8 f4 41.ef4 Rc8+–) 38...Rec8 39.c7 (better 39.Ne6 Kf7 40.Nc7 f4 41.ef4 Ra7 42.Ra7 Bg6+–) 39...Nc6 40.Ne6 (better 40.Nc6 d4 41.Rb8 de3 42.Ke3 Re8+–) 40...Ke7 41.Qd5 Bf7 42.Qc6 (42.Qd6 Ke8 43.Ng7) 42...Be6+– 43.Rb8 Ra7 44.Rc8 (44.Bc4 Bc4 45.Rc8 Kf7 46.Qc4 Ke7 47.Re8 Ke8 48.c8Q Ke7 49.Q4e6) 44...Bc8 45.Ke2 (45.Bc4 Kf8 46.Qd5 Rc7 47.Qd8 Kg7 48.Qc7 Kg6 49.Bg8 Bd7 50.Qd7 Kg5 51.Qe7 Kh5 52.Bf7 Kh6 53.Qf6) 45...Ra2 46.Kf3 h5 47.Bc4 Rc2 (47...Rd2 48.Bg8 Kf8 49.Qa8 Rc2 50.Qc8 Kg7 51.Qd7 Kg8 52.Rb1 Rf2 53.Kf2 Kf8 54.c8Q) 48.Qa4 (48.Qd6 Ke8 49.Qd8) 48...Rc3 49.Qb4 Kd7 (49...Ke8 50.Rd1 Rc4 51.Rd8 Kf7 52.Qf8 Ke6 53.Qe8 Ne7 54.Rd6 Ke5 55.Qe7 Be6 56.Qe6) 50.Qc3 (50.Qd6 Ke8 51.Qd8) 50...Kc7 (50...Bb7 51.Kf4 Nf6 52.Rd1 Nd5 53.Rd5 Bd5 54.Bb5 Ke6 55.c8Q Kf7 56.Q3c7 Kg6 57.Qf5 Kh6 58.Qf6) 51.Bg8 (51.Bg8 Kd8 52.Rd1 Bd7 53.Qc6 Ke7 54.Qd7 Kf8 55.Qf7; 51.Be6 Kb6 52.Rb1 Ka7 53.Qc8 Nf6 54.Qb7) 1–0. patrick317 – glenngilbert, gameknot.com, 2018.

3.f4 Nf6 4.Nf3=+.

3.Bf4 Nf6 4.e3 e6 5.a3 c6 6.Be2 Nbd7 (6...Bd7 7.Nf3+=) 7.Nf3 Ne4 (7...b5 8.0-0+=) 8.0-0 Ndf6 (8...Be7 9.c4+/–) 9.Ne5+/– Bd6 (9...Be7 10.Bh5 g6 11.Be2+/–) 10.c3 (10.f3 g5 11.fe4 gf4 12.Bh5 Ke7+–) 10...0-0 (10...Qc7 11.f3 g5 12.fe4 gf4 13.Bh5 Ke7 14.Nf7 Nh5 15.Nh8+–) 11.h3 (11.f3 g5 12.fe4 gf4 13.ef5 (worse is 13.Rf4 de4 14.Qe1 Nd7=) 13...fe3 14.Qd3+=) 11...Qe8? (better is 11...Bc7+=) 12.Nd2?? (better is 12.f3+–) 12...Nc3+= 13.Qe1 Ne2 14.Qe2 Ne4 15.Ndf3 b6 16.Nd3 Ba6 17.Nfe5 Be5 18.Be5 Qg6 19.Qc2 Ng5 20.f4 Nh3 21.Kh2= Ng5 22.fg5 Qg5 23.Rfe1 Qh4= 24.Kg1 f4?? 25.Nf4+– g5? 26.Ne6 Rf7 27.Nc7 Raf8? 28.Qc6 Bd3 29.Qd5 Be4+/– 30.Qc4?? Qf2 (30...Qf2 31.Kh2 Qg2) 0–1. dadio – bigsteve (2060), net–chess.com, 2004. (=1.d4 f5 2.b4)

3.c3 ed4 4.Qd4 Nc6 5.Qe3 Qe7 6.Qg3 Ne5 7.Bf4 d6 8.Nd2 Nf6 9.Nh3 Nh5 10.Qe3 Nf4 11.Nf4 g6 12.Qd4 Bg7 13.Nd5 Qf7 14.0-0-0 Ng4 15.Qc4 c6 16.Nf3 Nf2 17.Ng5 cd5 18.Nf7 dc4 19.Nh8 Nh1 20.e3 Nf2 21.Rd6 Bh8 22.Bc4 Bc3 23.a3 Be5 24.Bb5 Ke7 (25.Rd2 Ne4–+) 0–1. Sigma 4 – MacChess 5.0, 2000.

3.de5 Bb4 4.c3 Bc5 5.Nf3 Nc6 6.Bf4 d5 7.h4 Nge7 8.h5 Be6 9.h6 g6 10.e3 Qd7 11.Nbd2 0-0 12.Rb1 Bb6 13.Bd3 Nd8 14.0-0 Nf7 15.Ng5 c5 16.Bb5 Nc6 17.Ndf3 Ng5 18.Ng5 Qe7 19.c4 d4 (< 19...dc4 20.Qd6 Bf7 21.Bc6 Qd6 22.ed6 bc6 23.Nf7 Kf7 24.Rfd1+/–) 20.Bc6 bc6 21.Qa4 Rac8 22.Rbd1 Rfd8 23.Rd3 de3 24.Rd8 Rd8 25.Be3 Rd3 26.Ne6 Qe6 27.Rd1 Rd1 28.Qd1 Kf8 (28...Qe5 29.Qd7 Qa1 30.Kh2 Qe5 31.Kh3 Qf6+/–) 29.Qd6+/– Qd6 30.ed6 Kf7 31.Bf4 Ke6 32.f3 Kd7 33.Kh2 Bd8 (better is 33...a6!?=) 34.Kh3+/– g5 35.Be5 ½–½. Maetz,Erich – Arnold,G_Robert (2250), World Cup XII P070, 2000.

4.Qd4 d5 5.Nc3 Nf6 6.Nf3 c5 7.bc6 Nc6 8.Qe3 Be7=+.

4.Qd4 d5 5.Nc3 Nf6 6.Bg5 Be7=.

4.Qd4 d5 5.c4 Be7 6.Nc3 Bf6=.

4.Qd4 d5 5.Qe5 Ne7=.

4.Qd4 d5 5.Nf3 c5 6.Qd3 Nf6=.

4.c4 d5=.

4.Bf4 d5 5.Nh3 Nf6 6.e3 a6 7.Nd2 Ba3 8.c4=.

4.Nh3 c6 5.a4=.

4.Nh3 c6 5.bc6 dc6 6.Bg5=.

4.Nh3 d5 5.Bg5 Nf6=.

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.d4).

3.c3 e6 4.Nf3 Be7 5.g3 0-0 6.Bg2 c6 7.0-0 d5 8.Re1 (8.Bf4 Ne4=) 8...Bd7 (8...a5 9.ba5 Qa5 10.Qd3=) 9.Nfd2 (9.Ne5 a5=) 9...Be8 10.f3 (10.Nb3 Nbd7=) 10...Bh5 (10...Qb6 11.e3=+) 11.Qc2 (11.Nb3 Bd6=) 11...Nbd7 12.e4 Bg6 (12...fe4 13.fe4 Qb6 14.a4=) 13.ef5 (13.Qb3 fe4 14.fe4 Qb6=) 13...Bf5=+ 14.Qd1 Bg6 (14...Bd6=+) 15.c4 (15.Re6 a5 16.Qe2 Rf7=) 15...Qe8 (15...Qb6!? 16.c5 Qb4-/+) 16.Ba3 (16.c5 Qf7=) 16...Qf7 17.cd5 (17.Bh3 Bf5 18.Bf5 ef5=+) 17...ed5 (17...Nd5 18.b5 Qf6 19.Ne4 Be4 20.Be7 Ne7 21.Re4 cb5 22.Nc3-/+) 18.Qe2? (18.Bh3 Kh8 19.Be6 Qe8=) 18...Bd6 (18...Rfe8 19.Qf2-/+) 19.b5 (19.Bh3!? Kh8 20.b5-/+) 19...Rae8-/+ 20.Qf1 (20.Qd1 c5-/+) 20...Re1 (better 20...Bd3! 21.Re8 Bf1 22.Rf8 Qf8 23.Bd6 Qd6 24.Bf1 Qb4-+) 21.Qe1-/+ Nh5?? (better 21...c5-/+) 22.Bd6+- Re8 23.Bf4?? (better 23.Be5 cb5 24.f4+-) 23...Nf4 (better 23...Re1 24.Kf2 Qe7 25.Ne4 de4 26.Bd2 e3 27.Ke1 ed2 28.Kd2 Qb4 29.Ke2 Qb5 30.Ke1-+) 24.gf4?? (24.Qd1 Ne2 25.Kh1 Nd4 26.bc6 bc6 27.Na3-+) 24...Qf4 (better 24...Re1 25.Kf2 Qe7-+) 25.Qf2+= Bd3 (25...cb5 26.Nc3 Nf6 27.Nb5+=) 26.Bf1 (26.bc6!? bc6 27.Nc3+/-) 26...Bb5 (26...Re3 27.a4 Qd4 28.Ra3+=) 27.Nc3 (27.Bb5 cb5 28.Nb3 Nf6+=) 27...Bf1= 28.Kf1 Nf6 (28...Qf5 29.Ne2=) 29.Re1+= Nh5?? (better 29...Rf8 30.Re2 Ng4+=) 30.Re8+- Kf7 31.Re2 (31.Qe2 Qd6 32.Ra8 Kg6+-) 31...Nf6 32.Nde4! b5 (32...de4 33.fe4 Passed pawn) 33.Nf6 Kf6 34.Rd2 (34.Qg3 Qg3 35.hg3 g5+-) 34...Qf5 (34...Kf7 35.Ke1+-) 35.Qe2 (better 35.Qg3 b4 36.Re2+-) 35...Qb1 (35...Qf4 36.Rc2 Kf7 37.Nd1+-) 36.Kf2 (36.Nb1 c5 37.Qe5 Kg6 38.Rg2 Kf7 39.Rg7 Kf8 40.Qe7) 36...Qa2 (36...Qf5+-) 37.Na2 c5 (37...a6 38.Rc2 g6 39.Rc6 Kg5 40.Qe7 Kh6 41.Qh4 Kg7 42.Rc7 Kf8 43.Qd8) 38.Nc3 (38.Qe5 Kf7 39.Qf5 Ke7 40.Re2 Kd6 41.Qc8 a5 42.dc5) 38...Kg6 (38...a6 39.Nd5 Kg6 40.Qe6 Kh5 41.Nf4 Kg5 42.Qe5 Kh4 43.Qh5) 39.Nd5 (39.Qe6 Kh5 40.f4 g5 41.Qf5 h6 42.Rd3 a5 43.Rh3) 39...h6 (39...Kg5 40.h4! Kh6 41.Qe3 Kg6 42.Qe6 Kh5 43.Qf5 Kh4 44.Qg4) 40.Nb4! Kh7 (40...cb4 41.Qd3 Double attack (41.Qe7 Decoy)) 41.dc5 a5 (41...h5 42.Qe4 g6 43.Rd7 Kh6 44.Qe3 g5 45.Qe6) 42.c6 (42.Qe4 Kg8 43.Rd8 Kf7 44.Qf5 Ke7 45.Nc6) 42...a4 43.c7 (43.Qe4 Kg8 44.Qg6 Kf8 45.Rd8 Ke7 46.Re8) 43...a3 (43...h5 44.Qe4 g6 45.Rd7 Kh6 46.Qe3 g5 47.Qe6) 44.c8Q (44.Qe4 Kg8 45.c8Q Kf7 46.Qee6) 44...a2 (44...h5 45.Qe4 g6 46.Qe7 Kh6 47.Qcf8) 45.Ra2 (45.Qd3 g6 46.Qdd7) 45...h5 46.Rb2 (46.Qf5 g6 47.Qe7 Kh6 48.Qfg5) 46...Kh6 47.Qec2 (47.Qh8 Kg6 48.Qe5 h4 49.Qhg7) 47...g6 48.Qf8 Kg5 49.Qd2 (49.Qe4 h4 50.Qd5) 49...Kh4 50.Qff4 Kh3 51.Qd7 1-0. aguarenai (1990) - lepigole (1865), Rated Bullet game, lichess.org, 2014. (=1.d4 f5 2.b4)

3.c3 g6 4.Bb2 (4.Nf3 Bg7=) 4...Bg7= 5.Nd2 0-0 6.g3 (6.e3 d5=) 6...d6 (6...d5 7.Bg2=+) 7.Bg2 b6?? (7...a5 8.ba5 Nc6 9.Ngf3=) 8.Ngf3 (better 8.Ba8 Bd7 9.Qb3 Kh8 10.Bg2+-) 8...Nc6 (8...c6 9.0-0=) 9.0-0 Bb7 10.a4 Qe8 11.Nb3 e5 12.de5 (12.b5 e4 13.Nfd2 Ne7=) 12...de5 13.Qc2 e4 14.Nfd4 Ne5 15.Rfd1 Qe7 16.a5 Rfd8 17.ab6 cb6 18.Nb5 (18.b5 Qf7=) 18...Bc6 (18...a6!? 19.N5d4 e3=+) 19.Rd8= Qd8 20.Na7 Qd7 (20...Bd5!? 21.Nd4 Qd7=) 21.Nc6+= Ra1 22.Ba1 Nc6 (22...Qc6 23.Nd4 Qd5 24.Qa4+=) 23.e3 (23.b5 Ne5 24.c4 Ne8+/-) 23...Nd5 24.Nd4 Ne5 25.Bb2 (25.Qb3 Nd3+=) 25...Nc4 26.Bc1 Qd6 (26...b5 27.Bf1+=) 27.Bf1 (better 27.Qa2 Ne5 28.f3+/-) 27...b5? (27...Ne5+/-) 28.Ne2?? (better 28.Nb5 Qc6 29.Qb3+-) 28...Ne5 (28...Qe5 29.h3+=) 29.Nf4 (29.Qa2 Nd3+=) 29...Nb6 (better 29...Nc3 30.Qb3 Kh8=) 30.Bd2?? (30.Bb5!? Nf3 31.Kh1 Bc3 32.Qb3 (32.Qc3?? Qd1 33.Qe1 Qe1 34.Kg2 Qg1 35.Kh3 Qh2) 32...Kf8 33.Be2+/- (33.Qc3?? Qd1 34.Qe1 Qe1 35.Kg2 Qg1 36.Kh3 Qh2)) 30...Qc6 (better 30...Qd2! 31.Qd2 Nf3 32.Kg2 Nd2 33.Bb5 Bc3-+) 31.Kg2 Nd5 (31...Nbc4 32.Bc1=+) 32.Nd5 Qd5 33.Be1 (33.Be2 Nd3=) 33...Nc4 34.Bc4 Qc4 35.Qd2 Kf7 36.Qd7 Kg8 37.Qd8 Kf7 38.Qd7 Kg8 39.Qe8 Bf8 40.h4 Kg7 41.Qe5 Kg8 42.Qd4 Bg7 (42...Qc6!?=) 43.Qc4+= bc4 44.Kf1 (44.b5 Kf7 45.b6 Ke6+/-) 44...Kf7 45.Ke2 (45.f3 h5+=) 45...Ke7 46.Kd2 (46.f3 h5+=) 46...Kd6= 47.Kc2 Kc6 48.Bd2 Kb5 49.Bc1 Bf6 50.Bb2 Be5 51.Bc1 Bd6 52.Bd2 Bc7 53.Be1 Bd6 54.Kd1 Be7 (54...h6 55.Ke2=) 55.Ke2 Bd8 (55...Bf6 56.f3+=) 56.f3+= Bc7 57.g4 Bd6 58.h5 Bc7 (58...fg4 59.fg4 g5 60.Kd2+=) 59.hg6 (59.gf5 gf5 60.fe4 fe4+/-) 59...hg6 60.gf5 (60.gf5 gf5 61.fe4 fe4 62.Bh4+/-) 1-0. ribarisah (2145) - mamaeshe5minut (1940), Rated Bullet game, lichess.org, 2014. (=1.d4 f5 2.b4)

3.Nc3!?=.

3.c4 e6 4.c5 Be7 5.Bb2 0-0 6.h3 d6 7.Nf3 a5 8.Bc3 (better 8.cd6!? cd6 9.b5=) 8...ab4-/+ 9.Bb4 Na6 (9...dc5 10.Bc5 Bc5 11.dc5 Qd1 12.Kd1 Rd8 13.Ke1-+) 10.Bc3 (better 10.cd6!? cd6 11.Bc3=+) 10...dc5-/+ 11.e3 cd4 12.Qd4 c5 13.Qd8 Rd8 14.Ba6 (better 14.Ba5!? Rd6 15.Nbd2-/+) 14...Ra6-+ 15.0-0 Ne4 16.a4 Nc3 (16...Bd7 17.a5-+) 17.Nc3 Bf6 18.Rfc1 Bd7 19.a5 (19.Rab1 b6-+) 19...Bc6 20.Ne1 Rda8 21.Nd3 Ra5 22.Ra5 Ra5 23.Ne2 b6 24.Nef4 Kf7 25.Rb1 (25.Nh5 Ra3 26.Nf6 Kf6-+ (26...Rd3?! 27.Nh7 Ke7 28.Ng5-+)) 25...Bb5 (25...c4!? 26.Rb6 cd3 27.Nd3-+) 26.Ne1 g5 27.Nh5 Bc3 28.Nf3 Kg6 29.g4 (29.Ng3 Ra1 30.Ra1 Ba1-+) 29...Bc6 30.Nh2 b5 31.Rb3 (31.Ng3 b4-+) 31...b4 32.Nf1 (32.Rb1-+) 32...Ra1 33.Nhg3 f4 34.ef4 gf4 35.Ne2 Bb5 (35...Be5 36.h4-+) 36.Nf4 (36.Nc3 Bf1 37.Kh2 bc3 38.Rc3-+) 36...Kf7 37.Kg2 (37.Kh2 Bf1 38.Ng2 Bg2 39.Kg2 c4 40.Rc3 bc3-+) 37...Bf1 38.Kg3 Bc4 0-1. jack0211 (1785) - Maria_K (2055), Rated Blitz game, lichess.org. (=1.d4 f5 2.b4)

3.e3 g6 4.c4 Bg7 5.Bb2 0-0 6.Be2 d6 7.Nf3 c6 8.0-0 Na6 9.Qb3 Kh8 (9...Nc7 10.Nc3+=) 10.h3 (10.Nc3 Nc7+–) 10...Nc7 (10...Qb6 11.a3+–) 11.a4 (11.Nc3 a5 12.a3 Bd7+–) 11...Qe8 (11...a5 12.b5+=) 12.Nc3+– Qf7 13.Rfe1 (13.Bd3 h6+–) 13...Bd7 14.Qc2 Rfe8 (14...h6 15.Bd3+–) 15.Rad1 (15.a5 Kg8+–) 15...Rad8 (15...h6 16.Rd2+–) 16.d5 (16.Ng5 Qg8+–) 16...cd5 17.cd5 e6 (17...Ncd5 18.Ng5 Qg8 19.Nd5 Nd5 20.Bg7 Kg7 21.Bc4+–) 18.de6+– Qe6 (18...Ne6 19.Nb5 (19.Rd6?! Ba4 20.Qd2 Qe7 21.Rd8 Rd8=) 19...Bb5 20.Bb5+–) 19.Bd3 (better 19.Rd4+–) 19...a6? (19...Na6!? 20.Ng5 Qg8 21.Ba6 ba6+=) 20.Ng5 (20.e4!? Qg8+–) 20...Qg8 (20...Qe7 21.e4 Ne4 22.Nce4 fe4 23.Re4+– (worse 23.Qc7 Bb2 24.Qa5 d5 25.Qd5 Ba4 26.Nf7 Kg7 27.Nd8 Rd8 28.Re4 Rd5 29.Re7 Kf8=+; 23.Ne4?! Bc6+=)) 21.e4 fe4? (better 21...f4+–) 22.Nce4+– Ne4 23.Be4 (23.Ne4?! Nd5+–; 23.Re4?! Ne6 24.Bc4 Rc8+–) 23...Bb2 (23...Rc8 24.Bg6! Ba4 (24...hg6?? 25.Qg6 Bf5 26.Nf7 Qf7 27.Qf7 Bb2 28.Re8 Re8 29.Qf5+–) 25.Qa4 hg6+–) 24.Qb2 (24.Qc7?! Bf6 25.Rd6 Qg7+–) 24...Qg7 25.Nf7 Kg8 26.Qg7 Kg7 27.Nd8 Rd8 28.Bb7 (better 28.Rd6 Ne8 29.Rdd1+–) 28...Ne6 (28...Ba4 29.Ra1 Bd7 30.Re7 Kf6 31.Rh7 Nb5+–) 29.Rd6 Kf7 (29...Nf8 30.Re7 Kh8 31.Bc6+–) 30.Bd5 1–0. rcm06 (2175) – pawnpusher2011, gameknot.com, 2018.

3.f3 d5 4.c3 Nbd7 (4...e6–/+) 5.h4 (5.Nh3!?=+) 5...Nb6 (5...e5 6.Nh3 Bd6 7.Na3–+) 6.a4 (6.Nh3–/+) 6...Be6 (6...a5 7.Nh3–+) 7.h5 (7.a5 Nbd7=+) 7...h6 (7...Qd6!? 8.Nh3 Nh5–/+) 8.a5=+ Nc4 9.e3 Qd7 10.Bc4 dc4 11.Ne2 a6 (better 11...Bf7!?=+) 12.Nf4+= Bf7 13.Ng6 Bg6 14.hg6 Qd6 (14...0-0-0 15.Na3 e5 16.Nc4 ed4 17.ed4+= (worse 17.Qd4 Qe6 18.Qf4 Nd5–/+)) 15.Kf2 0-0-0 16.Ba3 (better 16.Nd2 Qd5 17.Qe2+=) 16...b5?? (16...Nd5 17.e4 Nf4 18.ef5 e5–/+) 17.Nd2?? (better 17.ab6 Nd5 18.bc7 Qc7 19.Qa4+–) 17...e5 (better 17...Nd5 18.Qc2 Qg6–/+) 18.Rh4? (18.Qc2!? Qe6 19.Rae1–/+) 18...Qe7 (18...Nd5 19.Qc2 Qg6 20.Nf1–+ (20.de5?? Ne3 21.Rg4 Nc2 22.Rg6 Rd2 23.Kg3 Na1–+)) 19.Bb2? (19.Qc2!? f4! 20.ef4 ed4 21.cd4 Rd4 22.Rhh1–+) 19...Nd5–+ 20.Qh1?? (20.g3 Ne3! 21.Qe2 (21.Ke3?? ed4 22.Kf2 Qe3 23.Kf1 dc3 24.Bc3 Qd3 25.Qe2 Qc3–+) 21...ed4 22.Nf1 dc3 23.Bc3–+) 20...ed4 21.e4 (21.Rd4 Qe3 22.Kf1 Nc3 23.Rd8 Kd8 24.Qh4 Kc8 25.Nc4 Qd3 26.Kg1 Ne2 27.Kh1 bc4 28.b5–+) 21...dc3 22.Bc1 (22.Ba3 Nb4 23.Nc4 bc4–+) 22...cd2 23.Bd2 Nf6 (23...Nb4 24.Bb4 Qb4 25.Qf1 Rd2 26.Kg1–+) 24.Be3 (24.Bc3 Rd3 25.Rc1 fe4 26.Bf6 e3 27.Kg1 Qf6–+) 24...Qb4 25.Re1 (25.Qb1 fe4 26.Qb4 Bb4 27.fe4 Rhe8–+) 25...Qa5 (25...Bc5 26.Kg3 Be3 27.Re3–+) 26.e5 (26.Qh3 Kb7 27.Qf5 Bb4–+) 26...Nd5 27.Bd4 (27.Ra1 Qc3 28.Qc1 Be7–+) 27...Qa2 (better 27...f4 28.Re4–+) 28.Re2 Qa3 29.Qh3 (29.Qb1 Qd3 30.Qd3 cd3–+) 29...Bc5 (better 29...Qd3 30.Rhe4 c3 31.Qf5 Kb7 32.e6–+) 30.Qf5 Kb8 31.Bc5 (31.e6–+) 31...Qc5 32.Kg3 Nc3 (better 32...Rhf8 33.Qh5 c3 34.e6–+) 33.Rf2 (33.Rb2 Rhf8 34.Qe6 Rfe8 35.Qc4 Qe5 36.Qf4 Qe1 37.Kh2 Re2–+) 33...Rhf8 34.Qc2 Nd1 (better 34...Qe5 35.Kh3 Rd1 36.g3–+) 35.Re2 (35.Re4 Qf2 36.Qf2 Nf2 37.Kf2 Rd2 38.Ke1 Rg2–+) 35...Ne3 36.Qc1 Qe5 37.f4 Nf5 (37...Nf5 38.Kf2 Qc5 39.Qe3 Ne3 40.Re3 Rd2 41.Kf3 Qc6 42.Re4 Rd3 43.Ke2 Qe4 44.Kf2 Rd2 45.Kg1 Qg2) 0–1. patrick317 – glenngilbert, gameknot.com, 2018.

3.f3 e6 4.b5 c6 5.Bd2 cb5 6.h4 Bd6 7.f4 Nc6 8.e3 a6 9.a3 0-0 10.Be2 Qb6 11.Bd3 Ng4 12.Nc3 Bc7 13.d5 Na5 14.Rb1 Bf4 15.Qe2 Be3 16.Na4 Bd2 17.Qd2 Qe3 18.Qe3 Ne3 19.Nc3 Ng2 20.Kf2 Nf4 21.Bf1 Nd5 22.Nce2 Nc4 23.Rh3 Nd2 24.Rb2 Ne4 25.Ke1 d6 26.Bg2 Ndf6 27.Bf3 e5 28.Rh2 Ng4 29.Bg4 fg4 30.Rb3 Be6 31.Re3 d5 32.c3 Bf5 33.Ng3 Ng3 34.Rg3 d4 35.h5 dc3 36.Rc3 Rac8 37.Re3 e4 38.Ne2 Rc2 39.Kd1 Ra2 40.Kc1 Rc8 41.Kb1 Rcc2 42.Nc3 Rab2 43.Ka1 Rh2 44.Re1 Rbc2 45.Rd1 Rc3 46.Kb1 Ra3 47.Rf1 Re3 48.Kc1 g3 49.Kd1 Ra3 50.Rh1 Ra1 White king mated 0–1. fantum bantum – mckenna215 (2055), ChessWorld.net, 2017. (=1.d4 f5 2.b4 Nf6)

3.Nf3 d5 (--> 2.Nf3 d5 3.d4 Nf6).

4.a3 d5 5.c4 Bd6 (5...Be7!?=+) 6.c5= Be7 7.Bb2 0-0 8.Be2 Ne4 9.Nh3 a6 (9...b6 10.0-0+=) 10.f3 Ng5 (10...Nf6 11.Nc3+=) 11.Nf4+/- Nc6 12.Nd2 Rf6 13.Nd3 Rh6 14.0-0 Qe8 15.Re1 (15.Qe1 Qh5 16.Qg3 Nf7+=) 15...Qh5 16.Nf1 Qg6 17.Qd2 Bd7 18.Rec1 Na7 19.a4 Rc8 20.Qc2 Nf7 (20...Rh4 21.Bc3+=) 21.Bc3+/- Bg5 (21...Qg5 22.Be1+/-) 22.f4 Bf6 23.Nd2 c6 (23...b5!?+/-) 24.g3 Bh4 25.Kg2 Rf8 26.Rh1 Bd8 27.Rag1 Kh8 28.Nf3 Qf6 (28...Bc7 29.h4+/-) 29.h3+- Qg6 (29...Nc8 30.Nde5 Ne5 31.Ne5+-) 30.Nfe5 Ne5 31.Ne5 (31.de5?! Nc8+/-; 31.fe5?! Qf7+/-) 31...Qe8 32.g4 g5 33.Be1 Rg8 34.Bg3 Nc8 35.Qd2 Rf6 36.fg5 Rg5 37.h4 Rg7 38.g5 Rf8 39.Bf4 Ne7 (39...b5 40.ab5 ab5 41.Kf2+-) 40.h5 Bc7 41.Kf1 Bb8 (41...Qd8 42.g6+-) 42.Bf3 1-0. vladimirmk (2060) - chriscooperden (2150), gameknot.com, 2017.

4.a3 Be7 5.c4 0-0 6.Bd3 d6 7.Nf3 b6 (7...e5 8.de5 de5 9.c5=) 8.Nbd2 (8.Nc3 c5+=) 8...Bb7 9.Nf1 (9.0-0 a5 10.Bb2 Ne4+=) 9...c5 (9...Ne4 10.Ng3=+) 10.bc5 (10.Ng3 Ne4=) 10...bc5=+ 11.dc5 (11.Rb1 Bf3 12.Qf3 d5 13.cd5 Nd5=+) 11...dc5 (11...Nbd7 12.cd6 Bd6 13.N1d2–/+) 12.Ng3 Nc6 (12...Bf3 13.gf3 (13.Qf3?? Qd3 14.Bb2 Rd8–+) 13...Nc6 14.Rb1=+) 13.0-0=+ h5 (better 13...Rb8!?=+) 14.Bb2+= Ng4 (better 14...Rb8!?+=) 15.Nh5+– e5 16.h3 Nh6? (better 16...e4 17.Bg7 Qd3 18.Qd3 ed3 19.Bf8 Rf8 20.hg4 fg4+–) 17.Ne5+– (17.Be5?! Ne5 18.Ne5 Qd6+–) 17...Ne5 18.Be5 g6 (18...Rf7 19.Rb1 Bc6 20.Be2+–) 19.Bg7 (19.Rb1 Bc6 20.Nf4 Bf6 21.Ng6 Qe8+–) 19...Nf7? (19...gh5 20.Bh6 Rf6+–) 20.Bf8 Qf8 21.Nf4 Kg7 (21...Ne5+–) 22.Ne6 (22.Ne6 Kg8 23.Nf8 Kf8 24.Qc2+–) 1–0. hiblit (1885) – chessgeneral1, gameknot.com, 2019.

(--> 2.Nf3 Nf6 3.d4 e6).

4.a3 Be7 (--> 2.Nf3 e6 3.a3 Be7 4.d4 Nf6).

3.a3 e6 4.d4 d5 5.c4 Bd6 6.c5 Be7 7.Be2 0-0 8.Nh3 b6 9.Bb2 bc5 10.bc5 Ba6 11.Ba6 Na6 12.Nc3 Rb8 13.Qc2 c6 14.Nf4 Nc7 15.Nce2 Ne4 (15...Qe8 16.0-0+=) 16.0-0 Rf6 (16...Qc8 17.f3 Nf6 18.Rab1+/-) 17.f3+/- Ng5 18.Nd3 Rh6 19.Bc3 Bf6 20.Ba5 (20.a4 Na6+/-) 20...Rb5 (20...Nf7 21.Rab1 Qc8 22.a4+/-) 21.Qa4 Qd7 22.Rab1 a6 (22...Nf7 23.Nc3 Rb1 24.Rb1+- (24.Nb1?! e5=)) 23.f4+- Nf7 (23...Ne4!? 24.Bc7 Qc7 25.Qa6 Ra5+-) 24.Bc7 Qc7 25.Qa6 Ra5 26.Qb6 Bd8 (26...Ra7 27.Qc7 Rc7 28.Rb8 Nd8 29.a4+-) 27.Qc7 Bc7 28.Rb7 Bd8 29.Rb8 Ra3 (29...Kf8 30.Nb4 Ke8 31.Nc6 Ra6+-) 30.Ne5 Re3 31.Kf2 Re5 32.de5 (worse is 32.fe5 Rh2 33.Ra1 Rh4+-) 32...Kf8 (32...g5 33.Nd4 Kg7 34.Nc6+-) 33.Kg1 Ke8 34.Ra1 g5 (34...Rh4 35.Ra7+-) 35.Nd4 gf4 (35...Rh4 36.Ne6 Rf4 37.Nf4 gf4+-) 36.Nc6 Kd7 37.Nd4 Ne5 38.Ra7 Bc7 39.Rbb7 (39.Rbb7 Ke7 40.Rc7 Kf6 41.Re7+-) 1-0. rabscuttle (2325) - chriscooperden (2120), gameknot.com, 2017.

3.c4 d5 4.cd5 Nd5 5.a3 e6 6.Qh5 g6 7.Qd1 b6 (7...Bg7 8.d4=) 8.Bb2+= Rg8 9.Nf3 Bd6 10.Nc3 Nc3 11.Bc3 Nd7 (11...a6 12.Rc1+=) 12.Nd4+/- Ne5 13.Bb5 Bd7 14.Qa4 (14.Ne6 Qe7 15.Bd7 Kd7+/-) 14...c6 (14...Bb5!? 15.Nb5 Qd7+=) 15.Nc6+/- Bc6 16.Bc6 Nc6 17.Qc6 Kf7 18.0-0 Rc8 19.Qf3 Qh4 20.g3 Qg5 21.Rac1 f4 (21...Qg4 22.Qg2+/-) 22.e4 (22.ef4 Qd5 23.Qe3 Rc7+-) 22...Ke7 23.d4 fg3 24.fg3 Rgf8 25.Qg2?? (better 25.Qd3+-) 25...Rf1 26.Qf1 Bg3! 27.hg3 Rc3?? (better 27...Qg3 28.Kh1 Rc3 29.Rc3 Qc3-/+) 28.Rc3+- (28.Rc3 Qd2 29.Rd3+-) 1-0. Mirage (1840) - Reaper76, Rated Classical game, lichess.org, 2013.

3.c4 e5 4.Bb2 (4.a3 Be7=) 4...Bb4+= 5.Be5 d6 (5...Nc6 6.Bf4=) 6.Bb2 0-0 (6...Nc6 7.a3 Ba5 8.Nf3=) 7.Nf3 (7.a3 Ba5=) 7...Ne4 (7...f4 8.Qb3 Nc6 9.a3=) 8.Qb3 (8.Be2 f4=) 8...c5 (8...Nc6 9.a3 Ba5 10.Be2=) 9.a3 Ba5 10.Be2 Be6 (10...Qe7 11.0-0=) 11.Qb7 (11.0-0 Qe7+=) 11...Nd7 12.0-0?? (better is 12.Qb3+=) 12...Nb6?? (12...Rb8 13.Qa7 Rb2–+) 13.Qg7 1–0. GuestCPYG – GuestWLSG, freechess.org, 2016.

3.c4 e6 4.a3 Nc6 5.Nf3 Bd6 6.Bb2 b6 7.d4 0-0 8.Nc3 a5 9.b5 Ne7 10.Na4 Ng6 11.c5 Be7 12.Rc1 Bb7 13.Nd2 bc5 14.dc5 Ng4 15.Be2 (15.c6 dc6 16.bc6 Ba6 17.Ba6 Ra6=) 15...Ne3 16.fe3 Bh4 (better is 16...Bg2!? 17.Kf2 Bh1 18.Qh1 Bf6+=) 17.Kf1+= Bg2 18.Kg2 Qg5 (18...Qg5 19.Bg4 fg4–/+) 0–1. jelquez (2275) – pierred (2780), net–chess.com, 2016.

3.Bc4 d5=+ 4.Bb5 c6 5.Ba4 b5 6.Bb3 e6 7.a3 Bd6 8.Bb2 0-0 9.h3 a6 10.Qf3 (10.Nf3 Qc7=+) 10...Qe8 11.d3 Qf7 (11...a5 12.ba5 e5 13.a4–/+) 12.Nd2 e5 13.e4 de4?? (better is 13...a5=+) 14.Bf7+– Rf7 15.de4 f4 (15...fe4 16.Ne4 Ne4 17.Qe4+–) 16.Qd3 Be6 (16...Rd7+–) 17.Qd6 Bd7 18.Qe5 Re7 19.Qe7 a5 20.Bf6 gf6 21.ba5 (21...c5 22.Ndf3+–) 1–0. mickster the king – gengar, ChessWorld.net, 2005.

3.Be2 e5 4.Bb2=.

3.Be2 e6 4.b5 (4.a3 d5=) 4...Be7 (4...a6 5.Bb2=) 5.Bh5 (5.Nf3 a6=) 5...Nh5+= 6.Qh5 g6 7.Qh6 (7.Qe2 Bf6 8.d4 e5=) 7...Bf6 8.d4 Qe7 (8...a6 9.ba6 Na6 10.Bd2+=) 9.a4 (9.Ba3 d6 10.Nf3 e5+=) 9...Qb4 (9...Bg7 10.Qh3+=) 10.Nd2 (10.c3 Qc4=) 10...d6 (10...a6 11.ba6 Qc3 12.Ra2+=) 11.Ngf3 (11.Ne2 d5=) 11...a6 (11...Qc3 12.Ra2 a6=) 12.0-0 (better is 12.Ra3!? d5 13.c3=) 12...ab5–/+ 13.c3 (13.a5 Ra5 14.Rb1 Qa4+=) 13...Qa5 14.Bb2 (14.Ra3 ba4 15.Ng5 Bg5 16.Qg5 0-0–+) 14...ba4–+ 15.Ng5 (15.Ra3 b5–+) 15...Bg5 16.Qg5 Kf7 (16...0-0 17.Qh4–+) 17.e4 (17.Ra3 Nc6–/+) 17...Nd7 (17...fe4 18.Qe3 Qb5–+) 18.f4 (better is 18.Qe3!?–/+) 18...a3?? (18...fe4 19.f5 ef5 (19...gf5 20.Qh5 Ke7 21.Qg5 Nf6 22.Qg7 Ke8 23.Qh8 Kf7 24.Ne4 Ne4 25.Qh7 Ke8 26.Qg8 Ke7 27.Qg7 Kd8 28.Rae1 Nc3 29.Qf6 Kd7 30.Qe6 Kc6 31.Qc4 Kb6 32.Bc3+–) 20.Ne4 Re8–+) 19.Ra3+/– (19.Ra3 Qa3 20.Ba3 Ra3 21.c4+/–) 1–0. GuestMGFW – GuestJCCQ, freechess.org, 2017.

3.Be2 g6 4.Bb2 Bg7 5.Nf3 d6 6.Bc4 (6.d4 0-0+=) 6...e6 (6...d5 7.Be2=) 7.Ng5 (7.0-0 0-0=) 7...d5 8.Be2 0-0 9.c4 c6 10.Nc3 (10.0-0 h6 11.Nf3 dc4 12.Bc4 b5+=) 10...Ne4 (10...dc4!? 11.Bc4 Nd5 12.Bd5 ed5=+) 11.Nge4= de4 12.0-0 Na6 13.b5 Nb4 14.Qb3 Nd3 (14...Qd2? 15.Qb4 c5 16.Qa3+–) 15.Ba3 Re8 16.Rab1 Qc7 (16...e5 17.Qc2=) 17.Bd3 (17.f3!?+=) 17...ed3= 18.Nd1 Rd8 19.Nb2 Qd7 20.bc6 bc6 21.Na4 Bf8 (better 21...e5!?=) 22.Bf8+– Kf8 23.Nc5 Qc7 (23...Qd6 24.Qb4 a5 25.Qb6+–) 24.Nd3 (24.Qc3 Kg8 25.Nd3 a5+–) 24...Qd6+– 25.Nf4 e5 26.Nh3 f4 (26...e4 27.Rb2+–) 27.ef4 Bh3? (better 27...ef4 28.Qf3 Bh3 29.Qh3 Rd7+–) 28.gh3?? (better 28.Qh3 ef4 29.Qh7+–) 28...ef4= 29.Qc3 Kf7 Exerts pressure on the backward pawn (29...Qd4!?=) 30.Rb7+– Rd7 31.c5 Qe6 32.Rd7 Qd7 33.Re1 (33.Qc4 Qd5 34.Qf4 Kg8 35.d4+–) 33...Re8 (better 33...Qd5!?+=) 34.Qc4+– Kg7 35.Re8 Qe8 36.Qf4 Qe1 37.Kg2 Qe7 38.d4 a5 39.Qe5 Qe5? (39...Kf7+–) 40.de5 Kf7 41.f4 (41.Kf3 Ke6 42.Kf4 h6+–) 41...Ke6 42.Kf3 (better 42.h4 Kd5 43.Kf3 h5+–) 42...Kd5 (42...Kf5+–) 43.Kg4 Kc5 44.Kg5 Kd5 45.Kf6 c5 46.e6 c4 47.e7 c3 48.e8Q c2 49.Qe1 (49.Qe1 Kd4 50.Qd2 Ke4 51.Qc2 Kf4 52.Qc7 Kf3 53.Qh7+–) 1–0. aravind555 (1605) – Kondyk (1610), lichess.org, 2019.

3.Nf3 b6 4.c4 e6 5.a3 Bb7 6.Bb2 Be7 7.Be2 0-0 8.0-0 c5 9.bc5 bc5 10.Nc3 Nc6 11.d4 cd4 12.ed4 Na5 13.d5 Bd6 14.Nb5 Bc5 15.de6 de6 16.Be5 Qe7 17.Bd6 Bd6 18.Qd6 Qd6 19.Nd6 Ne4 20.Ne4 Be4 21.Ng5 Rac8 Attacks the isolani on c4 22.Rfe1 Nb3 23.Rad1 Nc5 24.Rd6 Rfd8 25.Red1 Rd6 26.Rd6 e5 27.Ne4 Ne4 28.Rd7 Nc3 29.Bf1 a5 30.f3 e4 31.Kf2 Nb1 32.fe4 fe4 33.Rd1 Na3 34.Rc1 Nb5 35.Ke3 Nd6 36.c5 Kf7 37.Ba6 Rc6 38.Be2 Nb7 Exerts pressure on the isolated pawn 39.Kd4 Ke7 40.Kd5 Rf6 41.Rc4 Rf5 42.Kc6 Nd8 43.Kb6 Rf6 44.Ka5 Nc6 45.Kb5 Na7 46.Kb4 Nc6= 47.Kc3 Re6 48.Kd2 Re5 49.Ke3 Attacking the isolated pawn on e4 49...Ke6 50.Rc1 Rg5 ½–½. Hoch,Hubertus (2320) – Niedermaier,Thomas (2265), RSLE–2009, 2009.

3.Nf3 e5=.

3.Nf3 g6 4.Bc4 (4.d4 e6 5.a3 Be7+=) 4...Bg7 5.Ng5?? (5.d4 d5 6.Be2 Nc6=) 5...e6 (5...d5 6.Bb5 c6=+) 6.0-0?? (6.Bb2 d5 7.Bb5 c6=) 6...Bh6?? (better is 6...Nd5 7.Ne6 de6–+) 7.h4 (7.f4 Bg7+=) 7...Nc6 8.Nf3 (8.a3 Ne5 9.Be2 0-0+=) 8...b6 (8...Nb4 9.Bb2=+) 9.Re1 (9.a3 0-0=) 9...Bb7 (9...Nb4 10.Ba3 Nbd5 11.Nc3=+) 10.d3 d5 11.Bb5 Qd6 12.d4 0-0-0 13.Bc6 Bc6 14.Ne5 Ng4 15.Nf7?? Qf8 16.Nh8 Qh8 17.Nc3 Re8 18.b5 Bd7 19.f3 Nf6 20.g4 fg4+/– 21.e4 Bc1= 22.Qc1 h6?? 23.a4 gf3=+ 24.e5 Ng4 25.a5?? f2–+ 26.Kg2 fe1Q 27.Qe1 Rf8 28.ab6 Kb7 29.bc7?? Ra8 30.Na4 Bb5 31.Nc5 Kb6 32.Na4?? Kc6 33.Qc3 Bc4 34.Nc5 Kc7–+ 35.Qa5 Kc8 36.Ne6 Qh7?? (37.Qd8 Kb7 38.Rb1 Bb3 39.Rb3 Kc6 40.Qd6; 36...Kd7 37.Nc5 Ke8 38.Qa4 Kf8–+) 0–1. MC Q – halo2, ChessWorld.net, 2005.

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

4.b5 b6 5.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3).

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

4.b5 Be7 5.c4 0-0 6.d4 d6 7.Nf3 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 0-0 6.Nf3 d6 7.d4).

4.Be2 Be7 5.Nf3 0-0 6.b5 (--> 1.b4 f5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2).

4.a3 a5 5.b5 Be7 (5...d5 6.Be2=) 6.Be2 b6 (6...0-0 7.Nc3=) 7.0-0 Bb7 (7...0-0 8.Bb2=) 8.Bb2 (8.Nc3 0-0+=) 8...0-0 9.d3 (9.Nc3 d5=) 9...d6= 10.Nbd2 Nbd7 (10...Qc8 11.d4=) 11.Ng5 Nc5 12.d4 Nfe4 13.dc5 Ng5 14.c6 Bc8 15.f4 Nf7 16.Nf3 Bf6 17.Bf6 Qf6 18.Bc4 Kh8 19.a4 e5 (better is 19...Re8!?=) 20.Bf7+/– Rf7 (20...Qf7 21.fe5 de5 22.Ne5+/–) 21.fe5 de5 22.Ne5 Rf8 23.Qd4 Be6 24.Nf3 (24.Rad1 Rad8 25.Nd7 Qd4 26.Rd4 Rfe8+–) 24...Qd4 (24...Kg8 25.Qf6 Rf6 26.Rad1+/–) 25.Nd4 Bd5 (25...Bc8 26.Rae1 Kg8 27.e4 fe4 28.Re4 Rf1 29.Kf1+–) 26.Rf5+– Rf5 27.Nf5 Re8 (27...Be4 28.Nd4+–) 28.Ng3 Re3 (28...g6 29.Rd1 Be6 30.Ne4+–) 29.Rd1 Re5 30.c4 Bc4 31.Rd8 Bg8 32.Rd7 g6? (32...h5 33.Rc7 h4+–) 33.Rc7 Bb3 (33...Rc5 34.Ne4 Rc1 35.Kf2 Rc2 36.Kg3+–) 34.Rb7 Ba4 (34...Rc5 35.Ne4 Rc1 36.Kf2+–) 35.c7 Re8 (35...Rc5 36.Ne4 Rc1 37.Kf2 Rc2 38.Ke3 Kg8 39.Nf6 Kf8 40.Nh7 Ke8 41.Nf6 Kf8 42.Nd7 Ke8 43.Nb6 Bb5 44.Rb8 Kf7+–) 36.Rb8 Bb5 37.Re8 Be8 (37...Kg7 38.c8Q Be8 39.Qe8 Kf6 40.Ne4 Kf5 41.Qe7 b5 42.Ng3 Kf4 43.Kf2 b4 44.h4 b3 45.Qe4) 38.c8Q (38.c8Q Kg7 39.Qe8 Kf6 40.Ne4 Kf5 41.Qe7 Kf4 42.Kf2 h5 43.Qe6 h4 44.g3 hg3 45.hg3) 1–0. Janek – Leonia, internet, 2018.

4.a3 d5 5.d4 Bd6 6.Bd3 0-0 7.0-0 c6 8.c4 Nbd7 9.c5 Bc7 10.Bb2 Ne4 11.Nbd2 Ndf6 12.Ne5 Qe8 13.f3 Ng5 14.Qe1 Qh5 15.Qg3 Nd7 16.Be2 (16.f4 Ne4 17.Qf3 Qf3 18.Ndf3 Rb8+=) 16...Qh6 (16...Rf6 17.Rad1+=) 17.f4 Ne4 18.Ne4 fe4 19.Bg4 (19.Bc3 Bd8+=) 19...Nf6 20.Be2 (20.Bd1 Nd7+=) 20...a5 (20...Nd7!?=) 21.h3 Nd7 22.Kh2 (22.ba5 Ba5 23.Rab1 Bd2+=) 22...Nf6 (22...Bd8 23.Ng4 Qg6 24.b5+=) 23.Bc3 (23.ba5 Ba5 24.Rab1 Nd7+=) 23...a4 (23...Nd7 24.ba5 Ba5 25.Ba5 Ra5 26.Qe1+=) 24.Rac1 (24.b5 cb5 25.Bb5 Nh5+/–) 24...Nd7 25.Rf2 (25.Nd7 Bd7 26.Rb1 Bd8+=) 25...Ne5 (25...Bd8!? 26.Ng4 Qh4+=) 26.fe5+/– Rf2 27.Qf2 Bd7 28.Rf1 Qg6 29.Be1 h6 30.Qf4 Kh7? (better is 30...Rb8+/–) ½–½. alaamattar (2170) – bigsteve (2090), net–chess.com, 2006.

4.a3 Be7 5.d4 0-0 6.Bd3 b6 7.0-0 Bb7 8.Bb2 d6 9.Nbd2 Ne4 10.c4 c5 11.bc5 dc5 12.Ne5 Nd7 13.f3 Ne5 14.de5 Qd3 15.fe4 fe4 16.Rf8 Rf8 17.Rc1 Rd8 18.Rc2 Bg5 19.Bc1 Qe3 20.Kh1 Qd4 21.h3 Ba6 22.Qg4 Bd2 23.Rd2 Qd2 24.Bd2 Rd2 25.Qe6 Kf8 26.Qf5 Kg8 27.Qe4 Rd4 28.Qa8 Kf7 29.Qa7 Kg6 30.Qa6 1–0. Chess4Win (1720) – Ryeno (1735), lichess.org, 2020.

4.b5 a6=.

4.b5 d6 5.Be2=.

4.b5 Bd6 5.Bb2 0-0 6.c4 (6.Be2 a6=) 6...a6 7.Nc3 (7.Be2 b6=) 7...b6 8.h4 (8.Be2 ab5 9.cb5 Bb7=) 8...Bb7=+ 9.Ng5 (9.Be2 ab5 10.cb5 Nd5=+) 9...h6 (9...f4 10.Nf3=+) 10.Nh3 (10.Nf3 ab5 11.cb5 c6=+) 10...Qe7 (10...ab5 11.Nb5 Bb4 12.a3–/+) 11.a3 (11.Qc2 ab5 12.Nb5 Na6=+) 11...ab5 (11...e5 12.d4=+) 12.Nb5=+ Bc6 (12...Ne4 13.d3 Nc5 14.Rb1=+) 13.Nd6= Qd6 14.d4 Qe7 (14...Na6 15.Nf4=) 15.Nf4 Qf7 (15...Re8 16.Be2=) 16.Be2 g6 (16...Be4 17.Qb3=) 17.h5 g5 18.Ng6 Re8 (< 18...Bg2 19.Rg1 (< 19.Nf8 Bh1 20.Ng6 g4–/+) 19...Bc6 20.d5 ed5 21.Qd4+–) 19.Ne5 Qe7 20.d5 (20.0-0 Be4+=) 20...ed5= 21.cd5 Nd5 22.Qd4 Qc5?? 23.Nc6+– Qd4 24.Nd4 Na6 25.Nf5 Kh7 26.Rd1 c6 27.0-0 Nb8 28.Ng7 Re7 29.Bd3 Kg8 30.Nf5 Re6 31.e4 Nf4 32.Bc4 d5 33.ed5 Re4 34.Rd4 Ne2 35.Be2 Re2 36.Bc1 c5 37.Rdd1 Kh7 38.Rfe1 Re1 39.Re1 Ra7 40.Re6 b5 41.Rh6 Kg8 42.Bb2 Na6 43.Rh8 Kf7 44.Rh7 Ke8+– 45.Ra7 b4 46.h6 ba3 47.h7 (47...Nc7 48.h8Q Kd7 49.Qb8 ab2 50.Rc7; 47.Nd6 Kf8 48.Rf7 Kg8 49.h7) 1–0. Schweitzer,Paul (1880) – Volf,Rudolf (1720), Seefeld op, 1993.

3.Nc3 e6 4.Ne4= Bb4 5.Qh5 g6?? (better is 5...Kf8=) 6.Qe5+– Nf6 7.Nf6 (7.Qf6?! Rf8 8.Qd8 Kd8+–) 7...Kf7 8.Ng4 Bd6 (8...Qf8 9.Bb2 Rg8 10.Qf4 Ke8 11.Qc7 Nc6 12.Nf6 Kf7+–) 9.Nh6 Kf8 (9...Ke8 10.Qh8 Bf8 11.Qh7 Qf6+–) 10.Qh8 Ke7 11.Qg7 Ke8 12.Qf7# 1–0. usingprogram (1975) – eddiev, kurnik, 2012.

3.Nc3 Nf6 4.d3 e5 5.a3 a5 6.b5 d5 (6...ed3!? 7.Bd3 d5–/+) 7.de4= d4 8.Na4 (8.Nd5 c6 (8...Ne4?? 9.Qh5 Kd7 10.Qe5+–; worse is 8...Nd5 9.Qh5 Kd7 10.ed5+=) 9.Nf6 Qf6 10.Qh5 g6=) 8...Nbd7 (8...Bd6 9.Bd3+=) 9.Nf3 (9.c3 Ne4 10.Bd3 Nef6 11.cd4 Bd6=) 9...Qe7 (9...Ne4 10.Qe2 Ndf6 11.Ne5+=) 10.Bd3= Nc5 11.Nc5 Qc5 12.0-0 Bd6 (12...Bd7 13.Qe2=) 13.Bd2 Bg4 14.c3 Nd7 (14...0-0 15.Qb3 Kh8 16.cd4 ed4 17.Ng5+=) 15.h3 Bf3 (15...Bh5 16.Re1=) 16.Qf3+/– 0-0-0 (16...Nf6 17.Rfc1+/–) 17.Qg3 g6 (17...dc3?? 18.Be3 Qa3 19.Ra3 Ba3 20.Bc4+–) 18.Rfe1 (18.Rfc1 Qb6+/–) 18...Kb8+= 19.a4 Rhf8 20.cd4 ed4 21.f4 Qb6 22.e5 Be7 23.Rec1 Nc5 24.Rc4 Rd5 25.Rac1 Nb3 26.Rd1 Rc5 27.Be1 Rc4 28.Bc4 Nc5 29.Bf2 Ne4 30.Qf3 Nf2 31.Qf2 g5 32.f5 Qc5 33.Bd3 Qe5 34.Qe1 Bd6 35.Qe5 Be5 36.Re1 Bf4 37.Re7 h5 38.Kf2 Kc8 39.g3 Bd6 40.Rh7 h4 41.gh4+= gh4 42.Rh4 Be5 43.Kf3 Kd7 44.Rh7 Kd6 45.Ke4 Rh8 46.Rh8 Bh8 47.h4 Be5 48.h5 Bg7 49.Bb1 c6 50.Bd3 cb5 51.Bb5 Ke7 52.Bd3 Kd6 53.f6 Bf6+= 54.h6 Be5 55.h7 Bh8 56.Kf4 Kc5= 57.Bb5 Kb4 58.Ke4 Kc3 59.Bd3 Kb4 60.Bc2 Kc3 61.Bd1 Kb4 62.Kd3 b5 63.ab5 Kb5 64.Bb3 Kb4 65.Be6 a4 66.Kc2 Bf6 67.Bd7 Bh8 68.Be6 Bg7 69.Kd3 Bh8 70.Kc2= ½–½. pierre – greenp, internet, 2012.

3.f3 ef3 4.gf3 (4.Nf3!? Nf6 5.a3=+) 4...Nf6 (4...e5 5.Qe2 d6 6.c3-+) 5.Qe2 g6 6.Qe7?? (better 6.d4-/+) 6...Qe7-+ 7.Kf2 Bg7 (7...Bg7 8.Nc3 Ne4 9.fe4 Bd4 10.Ke1 Bc3 11.dc3 Qe4 12.Be3 Qh1-+) 0-1. Mannat_Ruia - kassanen (1800), Casual Blitz game, lichess.org, 2020.

4.a3 a5+=.

4.d3 ed3 5.Bd3 d6 (5...e5 6.a3 d6 7.Qe2–/+) 6.Nf3 (6.Bf6 ef6 7.Qh5 Ke7+=) 6...e5–/+ 7.Ng5 h6?? (better is 7...d5 8.Be5 Bb4 9.c3 Nc6–/+) 8.Bg6+– (8.Bg6 Ke7 9.Nf7+–) 1–0. Leisebein,Peter – Hasler,Ulrich, corr SOK–89–35, 1989.

4.Ne2 e6 5.Ng3 Be7 6.h4 (6.Nc3!? d5 7.b5–/+) 6...0-0–+ 7.h5 h6 8.c4 (8.Nc3 d5–+) 8...d5 9.Nc3 c6 (9...Bb4!? 10.Be2–+) 10.Be2 Bd7 (10...Bb4 11.Qb3 Qb6 12.0-0–+) 11.cd5 ed5 12.Rb1 (12.0-0 Na6 13.Qb3 Rf7–/+) 12...Be6 13.Qb3 (13.0-0 Bb4 14.Qb3 Qe7–+) 13...Qd7 14.Nd1 (14.b5!?–/+) 14...b5 15.Bd4 Na6 (15...a5!? 16.ba5 Ra5 17.0-0–+) 16.a3–/+ Nc7 17.Ne3 a5 18.Rh4? (18.Qc3!? ab4 19.ab4–/+) 18...a4 (18...ab4!? 19.ab4 Nh7 20.Rh1–+) 19.Qd1 Bd6 20.Nh1? (20.Qc2 Na6–+) 20...Rf7 (better is 20...Qe7!? 21.Ng3 Nd7 22.Rh1–+) 21.Rc1 Na6 (better is 21...Nfe8–+) 22.Ng4? (better is 22.Kf1–+) 22...Ng4 23.Bg4 Raf8 (better is 23...Nc7!? 24.Bc5–+) 24.Be6 Qe6 25.Rc6 Nb8 26.Rb6 Nd7 27.Rb5 Ne5 28.Be5 Be5 29.Qg4 Qa6 30.Rd5= Bf6 31.Rh3 Qc4 32.Rc5 Qd4 33.Rc8 Bg5 34.Rf8 Rf8 35.Qe6? Kh8–+ 36.Qa2 Rd8?? 37.Kf1 Qe5 38.Rc3 Bd2–+ 39.Rc5 Qd4 40.Ng3?? Bb4!–+ 41.Rc1 Bc5 42.Nf5? Qd3–+ 43.Kg1 Qa3 44.Ra1?? Rd1!–+ 45.Kh2 Ra1 46.Qf7 Bf8 47.Nh4 Bd6 48.g3 Qa2 49.Qe8 Qg8 50.Qe4 a3 51.Ng6+– ½–½. Wilson,Peter – London,Shane (1680), Sydney AUS, Australian Open, 2013.

3.ba5 Ra5 4.Bb2 Nf6 5.e3 d6 6.d4 g6 7.Bd3 Bg7 8.Nbd2 0-0 9.0-0 b6 10.Qe2 Ba6 11.Nb3 Bd3 12.cd3 (12.Qd3!? Ra8 13.Ng5+=) 12...Ra8 13.e4 Nh5 14.d5 (14.Bc1!?=) 14...Nf4=+ 15.Qc2 Bb2 16.Qb2 Nd3 17.Qd2 fe4 18.Ng5 Nf4 (better 18...Qd7!?=+) 19.g3+= h6 (19...Qc8!? 20.gf4 Qg4 21.Kh1 Rf4+/-) 20.Ne4+/- Nh3 21.Kg2 Ng5 22.Ng5 hg5 23.Qg5 Kg7? (better 23...Rf6+=) 24.Nd4+- Rf6 25.Ne6 Re6 26.de6 Ra5 27.Qg4 Nc6 28.Rfe1 (28.Rfc1 Qa8 29.Qf3 Nd4 30.Qa8 Ra8 31.Rc7 Kf6+-) 28...Qa8+/- 29.Qf3 (29.Re4 Nd4 30.Qh4 g5+/-) 29...Rf5 (29...Nd4 30.Qa8 Ra8 31.Rab1=) 30.Qe4 Re5 31.Qf3 Rf5 32.Qc3 Rf6 33.Kg1 Ne5 34.Re5 de5 35.Qe5 Qc6 36.Re1 Qc2 37.Qe2 Qc6 38.h4 Rf5 39.a3 Qc5 40.Qe3 Qc6 (40...Kf6 41.Qd2+/-) 41.Qd4 Kh7 42.Qd7 Qc5 43.Qd2 (43.Re2 Rf3 44.Kg2 Ra3+/-) 43...Rf6 (43...Qa3!? 44.Qe2 b5=) 44.Qe3 Qc6 45.Re2 Qd5 46.Qe4 Qd6 47.a4 Qa3 (47...Kg8 48.f4+/-) 48.h5 (48.Qc6 Qd6 49.Qd6 cd6+-) 48...Kg7 49.hg6 Rg6 (better 49...Qd6!?+/-) 50.Qe5+- Rf6 51.Kg2?? (51.Qc7 Qb4+-) 51...Qd6? (51...Qf3!? 52.Kh2 Kf8+=) 52.Qg5 (better 52.Qd6!? cd6 53.Rb2+-) 52...Rg6+/- 53.Qe3 Qc6 54.Qe4 Qa4?? (better 54...Re6 55.Qc6 Rc6 56.Re7 Kf6+/-) 55.Qa4+- (55.Qa4 Re6 56.Qg4 Kh8 57.Re6 Kh7 58.Qg5 c5 59.Rh6) 1-0. Doluhanova,E (2225) - Swicarz,M (2325), Titled Tuesday, 2020. (=1.Nf3 f5 2.b4)

3.b5 c5 4.g3 Nf6 5.Bg2 g6 6.Ba3 b6 7.c3 Qc7 8.d4 Bg7 9.0-0 0-0 10.Nbd2 d5 11.c4 Bb7 12.Rc1 Nbd7 13.Ng5 Qd6 14.cd5 Nd5?? (better is 14...Bd5 15.dc5 Nc5 16.Bd5 Qd5+=) 15.dc5+– Nc5 16.Nc4 Qd7 17.Bc5?? (better is 17.Bd5 Qd5 18.Qd5 Bd5 19.Nb6+–) 17...bc5+/– 18.Nb6! Nb6 19.Qd7 Nd7 20.Bb7 Ra7 21.Bd5 Kh8 22.e3 h6 23.Ne6 Rc8 24.Rfd1 Nb6 25.Nf4 g5 (better is 25...Nd5!? 26.Rd5 g5+/–) 26.Be6+– (26.Be6 Bb2 27.Rc2+–) 1–0. Gutman,Lev (2450) – Merenyi,Gabor (2115), Wiesbaden op, 1996. (=1.Nf3 f5 2.b4 a5)

3.b5 c6 4.a4 Nf6 5.e3 d5 6.c4 Qc7 7.Bb2 Nbd7 8.d4 g6 9.Nbd2 Bg7 10.Rc1 0-0 11.c5 Ne4 12.b6 Qd8 13.Be2 (better is 13.Qc2+=) 13...Ndc5!–/+ 14.dc5 (14.Rc5 Nc5 Combination; 14.dc5 Bb2 Pinning (14...Bb2 Deflection)) 14...Bb2 15.Rb1 Nc3 16.Qc2 Nb1 17.Qb2 Nd2 18.Qd2 e6 19.Nd4 (better is 19.Qd4!?–/+) 19...e5–+ 20.Nb3? (20.Nf3 f4 21.Ne5–+) 20...Qh4 21.Qa2 Qb4 22.Nd2 0–1. Oelrichs,Manfred – Gruebling,Karl Heinz, Pinneberg–ch op, 1991. (=1.Nf3 f5 2.b4 a5)

3.b5 d6 4.Bb2 Nd7 5.e3 Ngf6 6.d4 e6 7.Bd3 c5 8.Nbd2 Qc7 9.Ng5 Ke7 10.Qe2 h6 11.Ngf3 Nb6 12.dc5 Qc5 13.0-0 Na4 14.Bd4 Qc7 15.e4 fe4 16.Ne4 e5 17.Nd6! Qd6 (17...Qd6 18.Be5 Decoy; 17...Kd6 18.Be5 Double attack) 18.Ne5 Be6? (better is 18...Rg8 19.Nc6 Kf7 20.Bc4 Be6+–) 19.Ng6 Kd7 20.Be5 (20.Nh8 Ng4 21.g3 Qd4+–) 20...Qe5 (20...Nc3 21.Qe1 Qb6+–) 21.Ne5 (21.Nh8 Bd6 22.Qe5 Be5–/+) 21...Kc7 22.Ng6 Re8 (22...Bg4 23.Qe5 Bd6 24.b6 Nb6 25.Qc3 Kb8 26.Nh8+–) 23.Nh8 Bd6 24.Bg6 Nc3 (24...Re7 25.Qd2 b6 26.Rfe1+–) 25.Qd3 Ncd5 26.Be8 Ne8 27.Rfe1 Nf4 28.Qc3 Kb8 29.Qa5 Nc7 30.Rad1 Be7 31.b6 (31.b6 Ne2 32.Re2 Nb5 33.Qb5 Bg4 34.Qe5 Ka8 35.Qa5 Kb8 36.Qa7 Kc8 37.Qa8) 1–0. Poley,Vladimir (2330) – Berg,Bo, Osterskars op SWE, 1995. (=1.Nf3 f5 2.b4 a5)

3.b5 Nf6 4.Bb2 e6 5.c4 b6 6.e3 Bb7 7.Be2 Ne4 (7...Bd6 8.0-0+=) 8.0-0+/- d6 9.a4 Nd7 10.Nd4 Qf6 11.Qc2 Qg6 12.f3 Ng5 13.Nc6 Bc6 14.bc6 Nf6 15.d4 Be7 16.Nd2 0-0 17.Bd3 Rf7 (17...Nh3 18.Kh1 Ng5 19.g4+=) 18.d5 (better 18.h4 Nh3 19.Kh2+/-) 18...e5?? (better 18...Rff8+=) 19.Bf5+- Qh5 20.h3 (better 20.f4 ef4 21.ef4+-) 20...g6+/- 21.Be4 Raf8 22.Bd3 Bd8 (22...Qh4 23.Nb3+=) 23.Rf2 (23.f4 ef4 24.ef4 Nh3 25.gh3 Qh3 26.Rf3 Qg4 27.Kf1+/-) 23...Qh4+/- 24.Raf1 Qg3 25.Kh1 Nh5 26.Ne4 (better 26.c5!? Qh4 27.Qc4 Ng3 28.Kg1+=) 26...Ne4=+ 27.Be4 Bh4 28.Bc3 (28.Rd2 Qg5 29.Rfd1 Qe3=+) 28...Kg7 (28...Qg5 29.Re2=+) 29.Re2 (better 29.Rd2=) 29...Rf6?? (29...Qg5!?=+) 30.Be1 (better 30.f4!? Qg5 31.Rf3+- (31.fg5?? Rf1 32.Kh2 Bg3)) 30...Qg5= 31.Bh4 (better 31.g4!? Be1 32.gh5=) 31...Qh4-/+ 32.Kh2 Ng3 33.Rff2?? (33.Rb1 Ne2 34.Qe2 g5=+) 33...Ne2 (better 33...Ne4 34.Rf1 Ng3-+) 34.Re2-/+ Qg5 35.g3 (35.Qd3 h5-/+) 35...Qh6 (better 35...Rf3!? 36.Bf3 Rf3-+) 36.f4 Kg8 37.Kg2 ef4 38.ef4 Qg7 39.Bf3 (better 39.Bd3!?=+) 39...g5-+ 40.fg5?? (better 40.f5 Rf5 41.Bg4-+) 40...Rf3 41.h4 (41.g6 hg6 42.Re6 R8f5-+) 41...R3f7 (better 41...Qa1 42.Kh2 Qf1-+) 42.Qe4 Qg6 (42...Qa1 43.Re1 Qa2 44.Kh3-+) 43.Qe3 (43.Qg6 hg6 44.Re6 Rf2 45.Kg1 Rf1 46.Kh2 Kg7-+) 43...Qf5 44.h5 (44.Re1 Qc2 45.Kh3 Rf3 46.Qe6 Kh8-+) 44...Qf3 (better 44...Qf1 45.Kh2 Rf2 46.Qf2 Rf2 47.Rf2 Qf2 48.Kh3 Qf1 49.Kh2 Qc4-+) 45.Qf3 Rf3 46.Re7 R3f7 47.Re6 White intends g6 47...Kg7 (47...Rf2 48.Kh3-+) 48.g4 (48.Kh3 Rf3-+) 48...Rf4 (48...Rf2 49.Kg1 R2f4 50.h6 Kf7 51.Kh2 Rg4 52.Rf6 Kg8 53.Re6-+) 49.h6 Kg8 50.Kg3 Rc4 51.g6 hg6 52.Rg6 (52.g5 Ra4 53.Rg6 Kh8-+) 52...Kh8 53.g5 Rg8 54.Re6 Rg5 55.Kf3 Rg8 (55...Rd5 56.Re8 Kh7 57.Re7 Kh6 58.Rc7-+) 56.Ke3 (56.Re7 Rc8 57.Rf7 Ra4-+) 56...Ra4 57.Re7 Rc8 58.Kd3 Rh4 59.h7 (59.Kc3 b5-+) 59...Rh7 60.Re2 Rg8 61.Kc4 Rg4 62.Kb5 Rb4 (better 62...Rd4!? 63.Ka6-+) 63.Ka6 a4 64.Kb7 a3 (better 64...Rf7 65.Rh2 Kg7 66.Rg2 Kf6 67.Rf2 Kg6 68.Re2-+) 65.Re8 Kg7 66.Re7 (66.Kc7 Rb5 67.Re2 Rd5 68.Kb6-+) 66...Kh6 67.Rc7 (67.Re2 Ra4 68.Ra2 b5-+) 67...a2 (better 67...Rc7 68.Kc7 a2 69.Kb7-+) 68.Rh7 Kh7 69.c7 Rc4 70.c8Q Rc8 71.Kc8 a1Q 72.Kc7 Qa3 73.Kb6 Qc5 74.Kb7 Qd5 (74...Qd5 75.Kb6 Qc5 76.Ka6 d5 77.Kb7 d4 78.Ka8 Qb5 79.Ka7 d3 80.Ka8 d2 81.Ka7 d1Q 82.Ka8 Qda4) 0-1. Cavadini,I (1985) - De Urquiza,S (1880), XX Rio Grande Domingo Int, 2020. (=1.Nf3 f5 2.b4)

3.a3 Nf6 4.Bb2 d6 5.Nc3 e5 6.d4 (6.e3 Be7=) 6...e4+= 7.e3? (better is 7.Nd2+=) 7...ef3–+ 8.Qf3 Be7 (8...d5 9.Bd3–+) 9.Bd3 0-0 10.e4 (better is 10.d5–+) 10...fe4 11.Ne4 Ng4 12.Qe2 d5 13.f3 Nf6 (better is 13...de4 14.Bc4 Kh8 15.fg4 b5–+) 14.0-0-0?? (14.Nf6 Bf6 15.0-0–+) 14...de4 15.fe4 (15.Be4 Ne4 16.fe4 b5–+) 15...Bg4 16.Qd2 (16.Qe3 Bd1 17.Rd1 a5–+) 16...Bd1 (better is 16...Ne4!? 17.Qe1 Nf2 18.Be2 Nh1 19.Bg4–+) 17.Qd1 Nbd7 (17...a5 18.c3–+) 18.h3 (18.e5 Nd5–+) 18...Qc7 (better is 18...a5!? 19.c3–+) 19.Re1 b6 (19...a5 20.e5 Ne8 21.Qg4–+) 20.Qf3 (20.e5 Ne8–+) 20...c5 (20...a5 21.e5 ab4 22.ef6 Nf6 23.ab4 Bb4 24.Re6–+) 21.dc5 (21.bc5 Ne8 22.Qg4 bc5 23.Qe6 Rf7–+) 21...bc5 (better is 21...Ne5 22.Qg3 Nd3 23.Qd3 bc5 24.Qc4 Kh8 25.e5–+) 22.Bc3 (22.e5 cb4 23.ef6 Bf6 24.Qe4 Bb2 25.Kb2 ba3 26.Ka2–+) 22...cb4 23.Bb4 Bb4 24.ab4 Nd5! 25.ed5 Rf3 26.gf3 Ne5 27.Re5 (27.Re3 Nd3 28.Rd3 Qf4 29.Kb2 Qb4 30.Rb3 Qd4 31.c3 Qd5–+) 27...Qe5 28.Be4 Rc8 29.Bh7 Kh7 30.c4 Rc4 (30...Rc4 31.Kd2 Qf4 32.Ke2 Rc2 33.Kd3 Qc4 34.Ke3 Re2; 30...Qc3 31.Kb1 Qb3 32.Kc1 Rc4 33.Kd2 Rc2 34.Ke1 Qb1) 0–1. jmcauley (1800) – pumpkin (2455), net–chess.com, 2013. (=1.Nf3 f5 2.b4 c6)

3.Bb2 Qb6 4.a3 a5 5.c4 ab4 6.c5 Qc7 (6...Qc5 7.ab4 Decoy) 7.ab4 Ra1 8.Ba1 d6 9.e3 Nh6 10.cd6 ed6 (10...Qd6? 11.Be5 Qb4 12.Bb8+–) 11.Be2 d5 12.Be5 Bd6 13.Bd6 Qd6 14.Qb3 b5 15.Na3 0-0 16.Nc2 Kh8 17.Qc3 Re8 18.0-0 Nf7 19.Ra1 Bb7 20.Nfd4 Qd7 21.Bh5 Kg8 22.Bf7 Qf7 23.Ra7 g6 24.Ne1 Re7 25.Nd3 Qe8 26.f4 (26.Nc5 Qf7+–) 26...Qd8 27.Ne5 Qb6 28.Ra1 Rc7? (better is 28...Na6!?+/–) 29.Ne6+– Re7?! (29...d4 30.Qb3 Re7 31.Nd4 Kh8 32.Nf7 Kg7 33.Nd6+–) 30.Qc5 (30.Ng6!? hg6 31.Qf6 Re6 32.Qe6 Kf8 33.Qd6 Ke8 34.Qb8 Kd7+–) 30...Qc5 31.Nc5 (31.bc5? Re6 32.Kf1 Na6–+) 1–0. Boersma,Paulus A (2390) – Perez Garcia,Hebert (2230), Groningen op, 1989. (=1.Nf3 f5 2.b4)

3.c4 d6 4.g3 e5 5.Bb2 Nf6 6.Bg2 Be7 7.Qb3 Be6 8.Ng5 Bg8 9.b5 Nbd7 10.bc6 (10.d4 Rc8 11.Nd2 Ng4=) 10...bc6=+ 11.0-0 Rb8 12.Qc2 h6 13.Nf3 Bh7 (13...Qb6 14.Bc1=+) 14.d3= 0-0 15.Nbd2 c5 16.Bc3 e4 17.Ne1 e3 18.fe3 Ng4 19.Bd5 Kh8 20.Ng2 Bg5 21.Rf4 (21.Rf3!?=) 21...Qe7 22.Nf1 Nb6 23.Bf3 Ne5 24.Bh5 g6 25.Bf3 Bf6 (25...Kg8 26.a4 Bf4 27.Nf4 Nf3 28.ef3=+) 26.Bd5= Nd5 27.cd5 g5 28.Ra4 Rb7 29.Nd2 Qf7 30.e4 fe4 31.Ne4 Be4 32.Re4 Bg7 (32...Qd5!? 33.Ne3 Qg8=) 33.Ne3+= Qh5 34.Rf1 Rbf7 35.Rf7 Qf7 36.Be1 (36.Kh1 Qh5 37.Kg2 Qf7=) 36...Kg8 (36...Ng4 37.Rg4 h5 38.Rg5 Bd4+-) 37.g4?? (37.Kh1+=) 37...Ng6?? (better is 37...Ng4 38.Rg4 Bd4 39.Rd4 cd4-+) 38.Nf5+/- Kh7 (38...Ne5 39.Bc3 Kh7 40.Be5 Be5 41.e3+/-) 39.Bc3 (39.Re6 Rb8 40.Ng7 Qg7+-) 39...Ne5 (39...Bc3 40.Qc3 Ne5 41.Qa3+/-) 40.Be5 Be5 41.Qb3 (41.e3 h5 (41...Qd5? 42.d4 cd4 43.ed4+-) 42.d4 cd4 43.ed4 hg4+/-) 41...Qg6 (41...h5 42.h3+/-) 42.Qb7 Rf7 43.Qc8 h5 44.h3 h4 (44...Qf6 45.e3 Rf8 46.Qc6+-) 45.Kg2 (45.e3 a5+-) 45...a5 46.Re5! de5 47.d6 (47.d6 Qf6 48.Qc5+-) 1-0. Guid,M (2315) - Deglmann,L (2265), Trieste ITA, 2019. (=1.Nf3 f5 2.b4)

3.c4 e6 4.Qb3=.

3.e3 e6 4.Ba3 Qf6=.

4.Bb2 d6 5.g3 (5.d4 Be6 6.Qd3 Qb6+=) 5...e5 6.d3 (6.Qa4 Be6 7.e3 e4+=) 6...e4 (6...a5 7.ba5 Ra5 8.a3=) 7.Nfd2 (7.Nd4 Be7=) 7...d5 (7...a5 8.de4 fe4 9.ba5 Qa5 10.Qb3=) 8.b5 (8.a3 ed3 9.ed3 Qe7 10.Be2 dc4 11.Nc4 Kf7+/–) 8...Bc5 (8...dc4 9.dc4 cb5 10.cb5+=) 9.Nb3 (9.d4 Be7 10.e3 cb5 11.cb5 h5=) 9...Bb6 (9...Bf2!? 10.Kf2 dc4 11.Bf6 gf6+=) 10.cd5 cd5 (10...Qd5 11.Nc3 Qe6 12.bc6 Qc6 13.d4+=) 11.de4 (11.e3!?+=) 11...fe4= 12.e3 0-0 13.Bg2?? (13.Be2 Kh8=) 13...a6?? (better is 13...Ng4 14.0-0 Nf2 15.Rf2 Be3–/+) 14.0-0 ab5 15.Nc3 (15.Bf6!? Rf6 16.Nc3=) 15...b4 16.Nb5 (16.Ne2 Bc7–/+) 16...Nc6 (16...Ng4 17.Qe1–/+) 17.Qd2 Ng4 18.N3d4 (18.Bd4 Bd4 (18...Nd4?! 19.N5d4 Ne5 20.Qb4+=) 19.N3d4 Nge5–+) 18...Qg5 (18...Nce5 19.Rab1–+) 19.h4 (19.Nc2–/+) 19...Qh5 (19...Qd8 20.a3 Nd4 21.Bd4 Bd4 22.Qd4 ba3 23.Ra3 Ra3 24.Na3 Qa5–/+) 20.f3?? (better is 20.Nd6+=) 20...ef3–+ 21.Bf3 Bd7?? (21...Qe5!? 22.Nc2 Be3 23.Ne3 Qe3 24.Qe3 Ne3 25.Rf2–+) 22.Qg2? Nce5 23.Bd5–/+ Kh8 24.Qe2?? Nd3!–+ 25.Be6? Bb5 26.Bg4? Qg6 27.Nb5= Nb2 28.Rab1? Rf1–+ 29.Rf1 h5 30.Qb2 Qg4?? 31.Qe5–/+ Be3 (31...Be3 32.Qe3 Qg6+–) 0–1. Hamornik,Jozef (2105) – Hlas,Jan (2185), SVK–chT3A, 2002. (=1.Nf3 f5 2.b4 c6)

4.d4 e5 5.Bd2 e4=.

4.d4 e6 5.a3 d5 6.c5 Be7 7.Bf4 0-0 8.e3 Bd7 9.Be2 Be8 10.0-0 h6 11.Nfd2 Nbd7 12.Nc3 g5 13.Bg3 Kh7 14.Nb3 a6 15.a4 Rg8 16.Re1 Nf8 17.Na5 Ra7 18.Nb3 Ng6 (18...Ra8 19.Ra2 Bg6+/–) 19.h3 Nf8 20.b5 Ra8 21.ba6 ba6 22.Rb1 h5 23.Nc1 h4 24.Be5 N8d7 25.Nd3 Ra7 26.Bh2 a5 27.f3 Bg6 28.Qd2 Bf8 29.Rb3 Bh6 30.Bd1 Qa8 31.Kh1 Qe8 32.Qf2 Nh5 33.Bc2 Bg7 34.Ne2 Bf6 35.Kg1 Kh8 36.Bd6 Bh7 37.Ne5 Ne5 38.de5 Bd8 39.Bb1 g4 40.hg4 fg4 41.f4 Bb1 42.Reb1 Rh7 43.e4 de4 44.f5 g3 45.Qf1 ef5 46.Qf5 Ng7 47.Qe4 Ne6 48.Rf1 h3 49.Rg3 hg2 50.Rf5 Rh4 51.Qg2 Rg3 52.Qg3 Ra4 53.Nf4 ½–½. Bendig,Frank (2365) – White,Kevin (2350), IECG, 2004. (=1.Nf3 f5 2.b4)

3.Ba3 Nd7 4.d4 Ngf6 5.e3 g6 6.Bd3 Bg7 7.0-0 Nb6 8.Nbd2 Ne4 9.c4 Nd2 +=.

3.b5 g6 4.Bb2 Nf6 5.e3 Be6 6.Be2 c5 7.c4 (7.d4 c4 8.0-0 Bg7=) 7...dc4 8.Qc2 Bh6 (8...Bd5 9.Bc4 Bf3 10.gf3=) 9.Bc4 Nd5?? (better is 9...Bc4 10.Qc4 Nbd7+=) 10.Bh8+– Kd7 (10...Nb4 11.Qc3 Bc4 12.Qc4+–) 11.Be5 Nb4 12.Qb3 Qb6 (12...Bc4 13.Qc4 Ke8 14.d4+–) 13.0-0 (13.a3 Bc4 14.Qc4 Qe6 15.Qe6 Ke6 16.ab4 Nd7+–) 13...f4 (13...Bc4 14.Qc4 a6 15.ba6 Qa6 16.Qc5+–) 14.Nc3 a6 (14...Bg4+–) 15.Na4 Qa5 16.Be6 (16.Be6 Ke8 17.Bf7 Kf8 18.Nc5+–) 1–0. Baumann,Heinz (2355) – Heinrich,Constanze (2000), remoteschach.de, 2003.

3.Nc3 e6 4.Bb2 Nf6 5.a3 Be7 6.e3 0-0 7.Bd3 Bd7 8.0-0 Bd6 9.Nb5 1–0. usingprogram (1985) – haki01, kurnik, 2012.

3.c4 dc4 4.e3 e6 5.Bc4 Bb4 6.Qa4 (6.a3 Be7=) 6...Nc6= 7.Nd4 Nge7 (7...Qd6 8.Nc3 a6+=) 8.a3= (worse is 8.Ne6 Be6 9.Be6 Qd6=; worse is 8.Be6 Bd7 9.Nc6 Nc6 10.Bd7 Qd7+= (worse is 10...Kd7 11.a3 Ba5 12.0-0+=)) 8...Bc5 (8...Ba5 9.Ne6 Be6 10.Be6 Qd6+=) 9.Ne6+= Be6 10.Be6 Rf8 (10...Qd6!? 11.Qb3 Bd4=) 11.Bb2 (11.Bb2 Qd6 12.Qb3+/–) 1–0. gtate (2790) – chessbrasil (2390), net–chess.com, 2008.

4.ba5 Nf6 5.d4 e6 6.c4 Be7 7.e3 0-0 8.Bd3 c5 9.0-0 Nc6 =.

4.Bb2 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.e3 e6 8.b5 Bd6 9.Be5 Be5 =.

4.b5 Nf6 5.d4 e6 6.Bf4 Bd6 7.e3 0-0 8.Bd6 cd6 9.Bd3 Qc7 =.

4.Bb2 Nf6 5.e3 e6 6.Be2 Bd6 7.0-0 Nbd7 8.d4 0-0 9.c4 dc4 =.

4.d4 Nf6 5.Bf4 Nh5 6.Be5 Nc6 7.e3 Nf6 8.Bd3 Ne5 9.Ne5 e6 +=.

4.e3 Nf6 5.d4 e6 6.c4 Be7 7.Bd3 dc4 8.Bc4 b5 9.Bb3 a5 +=.

4.Bb2 Nf6 5.e3 e6 6.Be2 Bd6 7.Be5 0-0 8.0-0 a5 9.b5 cb5 =.

4.Nc3 e6 5.d4 Bd6 6.Bg5 Nf6 7.e3 0-0 8.Bf4 Bf4 9.ef4 Ne4 =.

4.d4 a5 5.b5 Nf6 6.e3 e6 7.Nbd2 Be7 8.a4 cb5 9.ab5 Ne4 =.

4.e3 Nf6 5.Bb2 e6 6.Be2 Bd6 7.Be5 a5 8.b5 Be5 9.Ne5 cb5 =.

4.Ne5 Nd7 5.Bb2 Ne5 6.Be5 Nf6 7.d4 a5 8.b5 cb5 9.e3 Bd7 =.

4.Bb2 Nf6 5.e3 e6 6.b5 Nb8 7.Be2 Bd6 8.c4 a6 9.Nc3 0-0 =.

4.b5 Na5 5.e3 Nf6 6.Ne5 e6 7.Be2 Bd6 8.Bb2 a6 9.Bh5 g6 =.

4.d4 Nf6 5.Bf4 Nh5 6.e3 Nf4 7.ef4 Qd6 8.Ne5 Ne5 9.fe5 Qb6 +=.

4.e3 Nf6 5.Bb2 e6 6.b5 Nb8 7.Be2 Bd6 8.Be5 a6 9.d4 0-0 =.

4.Bb2 Nd7 5.d4 Ngf6 6.e3 Nb6 7.Ne5 a5 8.ba5 Ra5 9.Bc3 Ra8 +=.

4.d4 Nf6 5.e3 Nbd7 6.Bb2 g6 7.c4 Bg7 8.Nc3 c6 9.Rc1 0-0 +=.

4.e3 e5 5.Bb2 Nd7 6.c4 Ngf6 7.Nc3 c6 8.cd5 Nd5 9.Nd5 Qd5 +=.

4.Ra2 Nf6 5.d4 e6 6.e3 Bd6 7.c4 dc4 8.Bc4 0-0 9.Nc3 Ne4 =.

4.Bb2 Nf6 5.e3 a5 6.b5 e6 7.Be2 c6 8.a4 Be7 9.0-0 0-0 +=.

4.Nc3 Nf6 5.d4 e6 6.Bf4 a5 7.b5 Ne4 8.Qd3 c5 9.bc6 Nc6 =.

4.d3 a5 5.e4 fe4 6.de4 de4 7.Ne5 Nf6 8.b5 e6 9.Nc3 Bc5 =.

4.d4 a5 5.ba5 Nf6 6.e3 Ra5 7.c4 e6 8.Qb3 Bc6 9.Ne5 dc4 =.

4.e3 Nf6 5.d4 e6 6.c4 Be7 7.Ne5 0-0 8.Bd3 a5 9.b5 c6 =.

4.Ne5 Nc6 5.Nd7 Qd7 6.Bb2 a6 7.e3 e5 8.Be2 Nf6 9.0-0 Qe6 =.

4.Bb2 a5 5.e3 ab4 6.ab4 Ra1 7.Ba1 Ngf6 8.Be2 e5 9.Ne5 Bb4 =.

4.Nc3 Ngf6 5.d4 e6 6.Bf4 Bd6 7.Bd6 cd6 8.e3 Ne4 9.Na2 Nb6 =.

4.d4 Ngf6 5.Bf4 Nh5 6.Be5 a5 7.b5 Ne5 8.Ne5 Nf6 9.e3 e6 +=.

4.Bb2 Nf6 5.e3 c5 6.bc5 Bc5 7.Be5 Nc6 8.d4 Qa5 9.Qd2 Bb4 =.

4.Nc3 a5 5.Bb2 Nf6 6.ba5 Ra5 7.e3 Bd7 8.Be2 Bd6 9.a4 c6 =.

4.d4 Bd6 5.Bg5 Nf6 6.e3 0-0 7.c4 h6 8.Bf6 Qf6 9.c5 Be7 =.

4.e3 a5 5.b5 Nf6 6.d4 c5 7.bc6 Nc6 8.c4 Be7 9.Bd3 0-0 =.

4.Bb2 a5 5.e3 ab4 6.ab4 Ra1 7.Ba1 e6 8.b5 Nbd7 9.Be2 Bd6 =.

4.d4 e6 5.Bf4 Bd6 6.Bd6 cd6 7.e3 Qc7 8.Nbd2 Ne4 (8...Qc3 9.Ra2=) 9.c4+= 0-0 10.cd5 Qc3 (10...ed5 11.Rc1 Qe7 12.Be2+/–) 11.Bc4 Kh8? (better is 11...Nd2 12.Nd2 e5 13.de5 Qe5+–) 12.de6+– Rf6 (12...Re8 13.Qc1 a5 14.Qc3 Nc3 15.b5+–) 13.Qc1 Be6 (13...a5 14.Qc3 Nc3+–) 14.Be6 Re6 15.Qc3 Nc3 16.Rc1 Nd7 17.Rc3 Nf6 (17...Ree8 18.Nc4 Rec8 19.Kd2+–) 18.Rc7 Ne4 (18...d5 19.Rb7 Ra6 20.Ke2+–) 19.Ne4 fe4 20.Ng5 Rg6 21.Ne4 d5 22.Nc5 (22.Nc3!? Ra6+–) 22...b6 23.Na4 (23.Nd3 Rg2 24.Nf4 Rg5+–) 23...a5 (23...Rg2 24.Kf1 Rg5 25.Nc3+–) 24.ba5 Ra5 (24...ba5 25.0-0 Rd6+–) 25.Rc8 1–0. b4_player (2155) – fub (1785), GameColony.com, 2002.

4.d4 e6 5.Bf4 Bd6 6.e3 Bf4 7.ef4 0-0 8.Ne5 a5 9.b5 Ne4 +=.

4.e3 e6 5.d4 Nbd7 6.c4 Ne4 7.Bd3 dc4 8.Bc4 Nb6 9.Bd3 a5 +=.

4.Ra2 Bg7 5.d4 Nf6 6.Bf4 a5 7.b5 Nbd7 8.e3 Nh5 9.Be5 Ne5 +=.

4.Bb2 Nf6 5.e3 Bg7 6.Be2 a5 7.b5 0-0 8.0-0 c5 9.c4 Be6 +=.

4.c3 Nf6 5.d4 Nbd7 6.e3 Bg7 7.c4 0-0 8.Qb3 c6 9.cd5 Nd5 =.

4.d4 Bg7 5.Bf4 Nf6 6.e3 a5 7.b5 c5 8.bc6 Nc6 9.c4 Be6 +=.

4.e3 Nf6 5.d4 a5 6.b5 Bg7 7.c4 Be6 8.cd5 Nd5 9.Qc2 c6 +=.

4.ba5 Nc6 5.Bb2 Nf6 6.e3 e6 7.Bb5 Bd7 8.Ng5 Ra5 9.Bc6 bc6 =.

4.b5 Nd7 5.d4 Ngf6 6.e3 g6 7.c4 Bh6 8.Nc3 f4 9.ef4 dc4 –/+.

4.e3 Nf6 5.b5 Bd7 6.Nc3 g6 7.Be2 Bg7 8.d4 0-0 9.0-0 Bc8 +=.

4.e3 e6 5.d4 Bd6 6.Be2 Qe7 7.0-0 Nf6 8.c4 dc4 9.Ne5 b5 =+.

4.Bb2 Nf6 5.a3 e6 6.e3 Bd6 7.Be2 Nc6 8.d4 0-0 9.0-0 Ne4 =.

4.Bb2 Nf6 5.e3 e6 6.a3 Bd6 7.Be5 Be5 8.Ne5 a5 9.b5 Nbd7 =.

4.Nc3 Qd6 5.e3 b5 6.Rb1 e5 7.Bb2 e4 8.Ng1 Nf6 9.a4 a6 =.

4.d3 Nf6 5.e3 e6 6.d4 Bd6 7.Be2 Qe7 8.0-0 a5 9.c3 ab4 =+.

4.d4 a5 5.e3 ab4 6.Bb4 Nf6 7.c4 Na6 8.Bc3 e6 9.c5 b6 +=.

4.e3 Nf6 5.d4 e6 6.Be2 Bd6 7.Qd3 b5 8.0-0 Qc7 9.Nbd2 a5 =.

4.b5 Nb8 5.e3 a6 6.Ne5 Nf6 7.ba6 Na6 8.d4 Ng4 9.Ng4 fg4 +=.

4.d4 a6 5.e3 Nf6 6.b5 ab5 7.Bb5 Bd7 8.0-0 Ra5 9.c4 dc4 +=.

4.e3 e5 5.Bb5 Bd6 6.d4 e4 7.Ne5 Qg5 8.0-0 Nge7 9.Qd2 0-0 =+.

4.b5 Qb6 5.e3 Nf6 6.Bb2 Nbd7 7.Be2 a6 8.a4 Qd6 9.Ba3 Qb6 +=.

4.d4 Qb6 5.e3 e6 6.c3 Nf6 7.Be2 Bd7 8.Nbd2 Ne4 9.Qc2 Na6 =.

4.e3 Nf6 5.b5 Qb6 6.Be2 Nbd7 7.d4 c6 8.Qd3 cb5 9.Qb5 Qb5 +=.

4.d4 Nf6 5.e3 e6 6.c4 a6 7.Nc3 dc4 8.Bc4 b5 9.Bd3 a5 =.

4.e3 e6 5.d4 Nf6 6.c4 a6 7.Nc3 dc4 8.Bc4 b5 9.Bd3 a5 =.

4.d4 Bd6 5.e3 Qe7 6.c3 Nf6 7.Bd3 Bd7 8.0-0 0-0 9.Bb2 a5 =.

4.e3 Bd6 5.c4 Nf6 6.d4 c6 7.c5 Bc7 8.Bd3 0-0 9.0-0 Ne4 =.

4.Bb2 Nf6 5.Be5 e6 6.c3 Bd6 7.g3 fg3 8.hg3 Be5 9.Ne5 Qd6 =.

4.b5 Nf6 5.Bc1 Qd6 6.d4 Nbd7 7.Qd2 e5 8.de5 Ne5 9.Qf4 Nf3 =.

4.e3 fe3 5.de3 e6 6.c4 Be7 7.Nc3 Nf6 8.Qa4 c6 9.b5 c5 =.

4.g3 fg3 5.hg3 Nf6 6.Bg2 Bf5 7.Nh4 e6 8.Nf5 ef5 9.c4 c6 +=.

4.d4 e6 5.e3 Ne4 6.c4 Nd7 7.Qb3 a5 8.b5 a4 9.Qb2 Ba3 +=.

4.e3 Nbd7 5.d4 e6 6.Bd3 Ne4 7.0-0 Bd6 8.b5 0-0 9.Bd6 cd6 =.

4.Bb2 Nf6 5.e3 Bg7 6.Be2 Qd6 7.a3 Nbd7 8.0-0 e5 9.d4 e4 =.

4.b5 Bg7 5.d4 Nf6 6.e3 a6 7.ba6 b6 8.Ne5 Ba6 9.Ba6 Ra6 =.

4.Nc3 Bg7 5.e3 e5 6.Be2 a6 7.d4 e4 8.Ne5 Qd6 9.0-0 Nd7 =.

4.d4 f4 5.Bc1 Qd6 6.a3 Bg7 7.Nc3 Bg4 8.Ne5 Be5 9.h3 Qc6 =.

4.e3 Bg7 5.d4 Nf6 6.Bd3 Ne4 7.0-0 a5 8.b5 c5 9.c4 Be6 +=.

4.Ne5 Bg7 5.Bb2 Nf6 6.e3 Qd6 7.a3 a5 8.ba5 Nbd7 9.d4 Ra5 =.

4.a3 Nf6 5.e3 e6 6.Be2 Bd6 7.0-0 Nbd7 8.Nd4 Nb6 9.f4 Na4 =.

4.Na3 e6 5.c4 Nc6 6.b5 Nb4 7.ba6 Na6 8.e3 Nf6 9.Be2 Bc5 =.

4.Bc3 Nf6 5.e3 e6 6.Be2 Bd6 7.a3 Nbd7 8.0-0 e5 9.Ng5 Qe7 =.

4.e3 Nf6 5.a3 e6 6.Be2 Bd6 7.0-0 Nbd7 8.Nd4 Nb6 9.f4 Na4 =.

4.Ne5 Nf6 5.e3 e6 6.b5 ab5 7.Bb5 Nbd7 8.0-0 Bd6 9.f4 0-0 =.

4.h3 Nf6 5.a3 e6 6.e3 Bd6 7.c4 0-0 8.c5 Be7 9.Be2 a5 =.

4.a3 Nf6 5.e3 e6 6.Be2 c5 7.bc5 Bc5 8.Bd4 Bd6 9.Be5 Be5 =.

4.Bc3 Nf6 5.e3 e6 6.Be2 Bd6 7.0-0 Qe7 8.a3 e5 9.d4 e4 =.

4.Nc3 Nf6 5.a3 e6 6.e3 a5 7.b5 Bd6 8.d4 0-0 9.Be2 Be8 =.

4.e3 Nf6 5.a3 a5 6.b5 e6 7.Be5 Be7 8.Be2 c6 9.Nc3 0-0 =.

4.Ne5 Nf6 5.e3 e6 6.a3 c5 7.bc5 Bc5 8.Be2 0-0 9.0-0 Nc6 =.

4.a3 a5 5.b5 Ngf6 6.e3 e6 7.d4 Bd6 8.c4 dc4 9.Bc4 Nb6 =.

4.Bd4 Ngf6 5.a3 e6 6.e3 a5 7.ba5 Bd6 8.Bc3 e5 9.d4 e4 =+.

4.Nd4 Ndf6 5.e3 e5 6.Bb5 c6 7.Nc6 Qb6 8.Na7 Bd7 9.Be5 Bb5 =.

4.e3 e6 5.a3 Ngf6 6.Nd4 Nb8 7.Qf3 a5 8.ba5 Bd7 9.Nc3 Nc6 =.

4.e3 Ngf6 5.c4 e6 6.cd5 Nd5 7.Bc4 (7.a3 N7f6=) 7...N7f6 (7...N7b6 8.Bd5 Qd5 9.0-0=) 8.Bd5 (8.b5 Nb6 9.Be2 Bd6=) 8...ed5 9.a3 Be7 10.0-0 0-0 11.Nc3 a6 12.Qb3 c6 13.d3 Qe8 14.e4 (14.Ne2 Bd6=) 14...Be6 (14...fe4 15.de4 Be6 16.Ng5=) 15.e5 (15.Nd4 Bd6=) 15...Nd7 (15...Nh5 16.Ne2=+) 16.d4 (16.Ne2 Qf7=) 16...Qg6 17.Ne2 f4 18.g3? (better is 18.Bc1!? Qh6 19.Ne1=+) 18...Bh3 19.Rfd1 fg3 20.Ng3 (20.fg3 Qg4 21.Kf2 Nb6–+) 20...Rf7 21.Qd3 (21.Rd2 Raf8 22.Ne1 h5–+) 21...Qd3 (better is 21...Bf5 22.Qc3 Bg4–+) 22.Rd3–/+ Raf8 23.Nd2 Rf2 24.Bc3 Rg2 25.Kh1 Rff2 26.Ngf1 Bg5?? (better is 26...Be6–+) 27.Rh3+= Nb6? (27...Bd2 28.Bd2 Rd2 29.Nd2 Rd2 30.Rf3 Rd4 31.Raf1=) 28.Rf3 (28.Nf3 Nc4+–) 28...Re2? (28...Na4!? 29.Rf2 Rf2+/–) 29.Rg3 (29.Nb3!? Nc4+–) 29...Rg3 30.hg3 Na4 (30...Bd2!? 31.Bd2 Nc4+/–) 31.Nf3+– Be7 32.Rc1 (better is 32.Bd2!?+–) 32...Ra2+/– 33.Ne3 (33.Bd2 Ra3 34.Nh4 g6+=) 33...Ra3 (better is 33...Rf2 34.Nf5 Rf3 35.Ne7 Kf8 36.Nc6 Nc3=) 34.Nf5?? (better is 34.Bd2 Bb4 35.Bb4 Re3 36.Rf1+=) 34...Bd8 (34...Kf8 35.Ne7 Ke7 36.Ra1 Rc3 37.Nh4–/+) 35.Nd6 Nc3 36.Nb7 Be7 37.Nd6 (37.Na5 Bb4 38.Nc6 a5–/+) 37...Ne2 (better is 37...Nb5 38.Kg2 Nd6 39.ed6 Ra2 40.Kh3 Bd6 41.Rc6 Bb4–/+) 38.Rc6?? (38.Rc2=+) 38...Ng3?? (better is 38...Rf3 39.Ra6 Nd4–+) 39.Kg2= Ne4?? (better is 39...Ne2 40.Rc7 Bf8=) 40.Rc8+– Bf8 41.Ng5?? (41.Ne4 de4 42.Ng5 Ra2 43.Kh3+–) 41...Ng5 42.Nf5 (42.b5 ab5 43.Nb5 Rd3–+) 42...Rb3 (better is 42...Kf7!? 43.Rb8–+) 43.Ne7 Kf7 44.Nd5 Ne6 45.Ra8 Bb4 (45...Nd4 46.Ra6 Bb4 47.Nf4–+) 46.Ra6 (46.Ra7 Ke8 47.Ra6–+) 46...Ra3 (better is 46...Nd4 47.Ra7 Kg6–+) 47.Nb4–/+ Ra6 48.Na6 Nd4 49.Nc5 Ne6 50.Ne4 h6 (50...Nf8 51.Ng5 Kg6 52.e6–/+) 51.Kf3 (51.Nd6 Kg6=+) 51...Ng5 (better is 51...Nd4!? 52.Kf4 Ke6–/+) 52.Ng5= hg5 53.Kg4 Kg6 54.e6 Kf6 55.e7 Ke7 56.Kg5 Kf7 57.Kf5 g6 58.Kg5 Kg7 59.Kg4 Kh6 60.Kh4 g5 61.Kg4 Kg6 62.Kg3 Kf5 63.Kh3?? (better is 63.Kf3=) 63...Kf4–+ 64.Kh2 g4 (better is 64...Kf3–+) 65.Kg2= g3 66.Kh3?? (better is 66.Kg1=) 66…Kf3–+ (67.Kh4 g2–+) 0–1. badboy1221 – snake20, Live Game Caissa's Web, 2004.

4.a3 e6 5.e3 c5 6.bc5 Bc5 7.Be2 Nc6 8.0-0 0-0 9.d4 Bd6 =.

4.b5 e6 5.e3 Bd6 6.Be5 0-0 7.Bd6 Qd6 8.d4 Nbd7 9.Bd3 a6 =.

4.Bc3 e6 5.a3 Bd6 6.e3 a5 7.b5 Nbd7 8.d4 0-0 9.Be2 Ne4 =.

4.Nc3 e5 5.Ne5 Bb4 6.a3 Bd6 7.Nb5 Be7 8.e3 0-0 9.Bd3 a6 =.

4.d4 e6 5.a3 Be7 6.e3 c6 7.c4 0-0 8.Nc3 a5 9.b5 Ne4 =.

4.e3 e6 5.a3 c5 6.Bc3 Nbd7 7.bc5 Bc5 8.d4 Bd6 9.Bb4 Bb8 =.

4.Ne5 e6 5.a3 Nbd7 6.e3 Bd6 7.f4 0-0 8.Be2 Be5 9.fe5 Ng4 =.

4.Qa4 Bd7 5.b5 e6 6.e3 Nf6 7.Ba3 c5 8.d4 c4 9.Bf8 Rf8 +=.

4.ba5 Nf6 5.d4 c5 6.Bf4 Qa5 7.e3 Nc6 8.Ne5 e6 9.Be2 Ne5 =.

4.b5 Nf6 5.d4 e6 6.Bf4 Bd6 7.e3 Bf4 8.ef4 0-0 9.Ne5 c6 =.

4.d4 ab4 5.cb4 e6 6.Bd2 Nf6 7.a3 Ne4 8.e3 Bd6 9.Bd3 0-0 =.

4.d3 Qd6 5.d4 Nd7 6.Qd3 e6 7.a3 a5 8.b5 c5 9.bc6 Qc6 =.

4.d4 Nf6 5.Bf4 h6 6.e3 g5 7.Bg3 Nc6 8.Bd3 e6 9.0-0 Bd6 +=.

4.e3 Nf6 5.d4 e6 6.Be2 Bd6 7.0-0 Nbd7 8.Qb3 Qe7 9.c4 dc4 =.

4.a3 a5 5.b5 cb5 6.Qb3 Nf6 7.e3 Bd7 8.Bb5 a4 9.Qb2 Bb5 =.

4.a4 Nf6 5.e3 e6 6.d4 Bd6 7.Bd3 0-0 8.0-0 Nbd7 9.Ba3 Ne4 =.

4.Qc2 e6 5.d4 Bd6 6.e3 Nf6 7.Bd3 0-0 8.0-0 b6 9.a4 c5 =.

4.d3 Qd6 5.d4 Nf6 6.Ne5 Nbd7 7.Bf4 g5 8.Nd7 gf4 9.Nf8 Rf8 =.

4.d4 a5 5.ba5 Nf6 6.Bf4 Qa5 7.Qc2 c5 8.e3 Nc6 9.Be2 e6 =.

4.e3 Nf6 5.d4 e6 6.Ba3 b5 7.Bd3 Bd6 8.0-0 0-0 9.Bb2 a5 =.

4.a3 Nf6 5.d4 a5 6.Qa4 Bd7 7.b5 Na7 8.e3 c6 9.bc6 Bc6 =.

4.Na3 e6 5.Rb1 Nf6 6.d4 Ne4 7.Qd3 a6 8.Nc2 Bd6 9.g3 e5 =+.

4.Bb2 a6 5.e3 Nf6 6.b5 ab5 7.Bb5 e6 8.Ne5 Bd7 9.Nd7 Qd7 =.

4.Qa4 Nf6 5.d4 e6 6.Bf4 Bd7 7.b5 Ne7 8.e3 Ng6 9.Bg5 c6 =.

4.b5 Na5 5.e3 Nf6 6.d4 e6 7.Ba3 Ba3 8.Na3 0-0 9.Bd3 c6 =.

4.d3 Nf6 5.b5 Nb8 6.Bf4 a6 7.ba6 Na6 8.e3 e6 9.Be2 Bd6 =.

4.d4 Nf6 5.Bf4 Nh5 6.Be5 Ne5 7.Ne5 Nf6 8.e3 e6 9.Nd2 Bd6 =.

4.e3 Nf6 5.d4 e6 6.b5 Nb8 7.Be2 a6 8.ba6 b6 9.a7 Ra7 =.

4.d4 Nf6 5.g3 e6 6.Bg2 Qb6 7.Bf4 Bd6 8.Bd6 cd6 9.0-0 0-0 =.

4.e3 e5 5.Ba3 Ne7 6.b5 Qe6 7.c4 dc4 8.Qc2 Nd7 9.Bc4 Qg6 =.

4.a3 e6 5.e3 Bd6 6.d4 Nf6 7.c4 dc4 8.Bc4 b5 9.Bd3 a5 =.

4.a4 e6 5.d4 Bd6 6.e3 Nf6 7.Bd3 Ne4 8.0-0 Qf6 9.Ba3 a6 =.

4.Qb3 e6 5.d4 Nf6 6.Bg5 h6 7.Bf6 Qf6 8.e3 Bd6 9.b5 g5 =.

4.Qc2 e6 5.d4 Bd6 6.Bg5 Nf6 7.e3 a5 8.b5 c6 9.c4 dc4 =.

4.d3 Nf6 5.Bf4 a5 6.ba5 Ra5 7.e3 e6 8.Be2 Ba4 9.Qd2 Bd6 =.

4.d4 Nf6 5.Bf4 a5 6.ba5 Ra5 7.e3 e6 8.Qb3 Ra7 9.Bd3 c5 =.

4.e3 Nf6 5.d4 e6 6.Be2 Bd6 7.0-0 0-0 8.Qb3 Nc6 9.Ba3 a6 =.

4.Ne5 Nc6 5.Nd7 Qd7 6.d4 e6 7.b5 Nd8 8.e3 Nf7 9.Be2 Nd6 =.

4.Qa4 c6 5.d4 Ngf6 6.Bf4 Ne4 7.e3 Rg8 8.Ne5 g5 9.Be2 Bg7 =.

4.d3 e5 5.e4 Ne7 6.Be2 c6 7.0-0 a5 8.ba5 Qa5 9.ed5 Nd5 =.

4.d4 Ngf6 5.Bf4 a5 6.b5 Nh5 7.Bg5 Nhf6 8.e3 Ne4 9.Bd3 Ng5 +=.

4.a3 Bd6 5.d4 Nf6 6.e3 a5 7.b5 Ne4 8.c4 0-0 9.c5 Be7 =.

4.d4 Bd6 5.Na3 a5 6.Qa4 c6 7.b5 Nf6 8.bc6 Nc6 9.Nb5 Bb8 =.

4.a3 e6 5.d4 Bd6 6.Nbd2 a5 7.b5 Bd7 8.e3 0-0 9.c4 b6 =.

4.d3 Qd6 5.Bg5 e5 6.e3 Nbd7 7.d4 e4 8.Bf4 Qe6 9.Ng5 Qc6 +=.

4.d4 Qd6 5.g3 e6 6.Bg2 Qb6 7.a4 Bd6 8.0-0 Ne4 9.a5 Qc6 +=.

4.e3 e6 5.d4 Bd6 6.Bd3 0-0 7.0-0 Ne4 8.Ne5 c5 9.bc5 Be5 =.

4.a3 e6 5.d4 Bd6 6.e3 Nf6 7.c4 0-0 8.c5 Be7 9.Bd3 b6 +=.

4.Bb2 Nd7 5.Qa4 c6 6.Qc2 e6 7.e3 Ngf6 8.Be2 Bd6 9.0-0 0-0 =.

4.Qc2 e6 5.d4 Nf6 6.e3 Bd6 7.Bd3 0-0 8.0-0 Ne4 9.Ba3 a6 =.

4.d3 Nf6 5.Ne5 a5 6.e4 de4 7.Be2 h5 8.Qa4 c6 9.de4 Ne4 =.

4.d4 Nf6 5.Ne5 Nbd7 6.Ng6 Rg8 7.e3 Kf7 8.Nf8 Rf8 9.c4 Nb6 +=.

4.e3 Nf6 5.d4 e6 6.a3 Bd6 7.c4 0-0 8.c5 Be7 9.Bd3 b6 +=.

4.Ne5 Nf6 5.d4 Nbd7 6.Ng6 Rg8 7.e3 Kf7 8.Nf8 Rf8 9.c4 Kg8 +=.

4.Nh4 Nf6 5.Ng6 Rg8 6.d4 a5 7.ba5 c5 8.Bf4 cd4 9.cd4 Qa5 +=.

4.a3 Nf7 5.d4 a5 6.b5 Qd6 7.c4 dc4 8.e3 e5 9.Bc4 Be6 =.

4.Na3 a5 5.b5 Nf7 6.d4 Nd7 7.Qd3 e6 8.Rb1 Nb6 9.g3 Bd6 =.

4.Qb3 Nf7 5.d4 Qd6 6.g3 Nd7 7.Bh3 g6 8.Bg2 c6 9.Bf4 Qf6 =.

4.Qc2 Nf7 5.d4 Qd6 6.Nbd2 e5 7.de5 Ne5 8.e3 Be7 9.Be2 0-0 =.

4.d3 Qd6 5.Nbd2 f4 6.e4 fe3 7.fe3 a5 8.ba5 Ng4 9.e4 Qc5 =.

4.d4 Qd6 5.g3 a5 6.Bf4 Qb6 7.ba5 Ra5 8.Nbd2 Nd7 9.c4 e5 +=.

4.e3 e6 5.d4 Bd6 6.Bd3 Nd7 7.0-0 Qf6 8.Na3 a6 9.Qa4 0-0 =.

4.ba5 Nf6 5.e3 e6 6.c4 Ra5 7.Bd2 Ra8 8.Be2 Nc6 9.0-0 Ne4 =.

4.b5 Nf6 5.Bf4 e6 6.e3 Bb4 7.c3 Bd6 8.Bd6 cd6 9.Nbd2 0-0 +=.

4.a3 Nf6 5.Bf4 Nh5 6.Bd2 Nf6 7.e3 e6 8.c4 a6 9.Nc3 Be7 +=.

4.Ba3 a6 5.e3 Nf6 6.b5 ab5 7.Bb5 Bd7 8.0-0 Na7 9.Bd3 g6 +=.

4.b5 Nb8 5.Bf4 Nf6 6.e3 a6 7.ba6 Na6 8.Be2 e6 9.0-0 Bd6 +=.

4.c3 Nf6 5.Bf4 Nh5 6.Be5 Ne5 7.Ne5 Nf6 8.e3 e6 9.a4 Bd6 =.

4.Bd2 e6 5.b5 Nce7 6.e3 a6 7.Ne5 ab5 8.Bb5 c6 9.Be2 Ng6 +=.

4.a3 Nf6 5.e3 Nbd7 6.Bd3 a5 7.b5 e5 8.Bf5 e4 9.Nfd2 Nb6 +=.

4.Ba3 Qb6 5.e3 e6 6.c3 Nf6 7.Be2 Bd7 8.Nbd2 Ne4 9.Rc1 Nc6 =.

4.b5 Nf6 5.e3 a6 6.ba6 Na6 7.c4 dc4 8.Bc4 Be6 9.Ba3 Qb6 +=.

4.c3 Nd7 5.Qd2 Ngf6 6.Qg5 Ne4 7.Qf5 Ndf6 8.Qf4 Ng4 9.Qd6 ed6 =+.

4.a3 a5 5.ba5 Ra5 6.Bd2 Ra7 7.e3 e6 8.Bd3 Nf6 9.c4 Be7 =.

4.a4 e6 5.b5 a6 6.Ba3 Nf6 7.Bf8 Rf8 8.ba6 Ra6 9.c3 b5 =.

4.c3 Nf6 5.Bf4 a5 6.ba5 Ra5 7.e3 e6 8.Be2 Bb5 9.Bb5 Rb5 =.

4.Nc3 Nf6 5.Rb1 e6 6.Bf4 Bd6 7.e3 0-0 8.Be2 Nc6 9.a3 Be8 =.

4.Bd2 Nf6 5.e3 e6 6.c4 Be7 7.Be2 0-0 8.0-0 Ne4 9.Qb3 Be8 +=.

4.Nbd2 e6 5.Rb1 Nf6 6.e3 Bd6 7.c4 dc4 8.Nc4 0-0 9.Nd6 cd6 =.

4.Qd3 e6 5.a3 Bd6 6.Bg5 Nf6 7.e3 a5 8.b5 0-0 9.c4 dc4 =.

4.e3 Nf6 5.a3 e6 6.c4 Be7 7.Ne5 0-0 8.Bd3 a5 9.b5 c6 =.

4.Ne5 Nf6 5.Bf4 e6 6.a3 a5 7.ba5 Nc6 8.a6 ba6 9.c4 dc4 =.

4.Bf4 Nf6 5.e3 e6 6.a3 b5 7.Ne5 a5 8.Nc3 c6 9.Na2 Bd6 +=.

4.Bg5 Nf6 5.e3 Ne4 6.Bf4 e6 7.a3 Bd6 8.Bd3 Bf4 9.ef4 0-0 =.

4.a3 Ngf6 5.Bf4 Nh5 6.Be5 a5 7.b5 Nhf6 8.e3 Ne5 9.Ne5 e6 +=.

4.e3 e6 5.a3 Ngf6 6.c4 Be7 7.Ng5 Nb8 8.Be2 0-0 9.0-0 a5 =.

4.Bf4 e6 5.a3 Bd6 6.e3 Ngf6 7.Bd3 0-0 8.0-0 Ne4 9.Nbd2 Qf6 =.

4.Bg5 Ngf6 5.e3 Ne4 6.Bh4 Ndf6 7.c4 Be6 8.Nbd2 dc4 9.Bc4 Bc4 +=.

4.Ne5 Bb4 5.c3=.

4.Ne5 Bb4 5.Bd2 Bd6 6.Bf4 Nd7 7.e3 Ne5 8.de5 Bc5 9.Bd3 Ne7 =.

4.a3 Bd6 5.Bg5 Nf6 6.e3 0-0 7.c4 c6 8.c5 Bc7 9.Be2 Qe8 (9...Nbd7 10.0-0=) 10.0-0 (10.Bf4 Bf4 11.ef4 Nbd7+=) 10...Nbd7 11.Bf4 Bf4 (11...e5 12.de5 Ne5 13.Nbd2=) 12.ef4+= Ne4 (12...Qg6 13.Re1+=) 13.Re1 (13.Ne5 Qe7+/–) 13...Qg6 14.Qd3 Ndf6? (better is 14...Qh6!? 15.Qe3 b6+/–) 15.Ne5+– Qh6 16.f3 Qh4 (16...Nd7 17.fe4 fe4 18.Qc3 Rf4 19.Nd2+–) 17.Rf1 Ng3 (17...Nc5 18.bc5 (< 18.dc5 Qf4 19.Nc6 bc6–/+) 18...Nh5 19.Qe3+–) 18.hg3 Qg3 19.Qd2 Nh5 20.Nd3 Qh4 (20...b6 21.cb6 ab6 22.Rc1+–) 21.Re1 Ng3 22.Nf2 (22.Nc3!? Qh1 23.Kf2 Qh2+–) 22...Rf6 (22...Nh5 23.Qe3 Nf4 24.Ra2+/–) 23.Nc3 Rh6 24.Nh3 (24.Nd3 Nh1 25.Reb1 Qh2 26.Kf1 Rg6+–) 24...Bd7? (better is 24...Rg6!? 25.Kh2 Ne4 26.Ne4 fe4+/–) 25.Qe3 Rg6 26.Bd3 Ne4 (26...Nh5 27.Kh1 Ng3 28.Kh2 b6+–) 27.fe4 (27.Be4?! Qh3 28.Ra2 fe4 29.fe4 Rg3=; < 27.Ne4 fe4 28.Be4 de4 29.Qe4 Qg3+=) 27...fe4 (27...Rg3 28.Qf2 Qh3 29.ef5 ef5 30.Re7+–) 28.Ne4 de4 29.Qe4 (29.Be4?! Rg3 30.Qf2 Qh3+–) 29...Qh3 (29...Rf8+–) 30.Qg6! hg6 (30...Qh4 31.g3+–) 31.gh3 Be8 (31...Rf8 32.Re4+–) 32.Re6 Bf7 33.Re7 Rd8 34.Rb7 Rd4 35.Rd1 Bc4 (35...Rf4 36.Ra7 Kh7+–) 36.Bc4 Rc4 (36...Rd5 37.Bd5 Kh7 38.Bg8 Kh6 39.Rd8 g5 40.Rd6 Kh5 41.Rg7 Kh4 42.Rg5 Kh3 43.Rh6) 37.Rd8+– Kh7 38.Rbb8 g5 39.f5 Rc1 40.Kf2 Rc2 41.Ke3 Rc3 42.Kd4 (42...Rd3 43.Kd3 g6 44.Rd7 Kh6 45.Rh8) 1–0. b4_player (2220) – john3_16 (1870), GameColony.com, 2003.

4.a3 Bd6 5.Bg5 Nf6 6.e3 c6 7.c4 dc4 8.Bc4 b5 9.Bb3 a5 =.

4.a3 Nf6 5.e3 Bd6 6.c4 0-0 7.c5 Be7 8.Bd3 c6 9.0-0 Nbd7 10.a4 Ne4 11.Nbd2 Bf6 12.b5 Qe7 13.Qb3 Rb8 14.Ba3 Qf7 15.a5 Rd8 16.bc6 bc6 17.Qa4 Bb7 18.Qc2 g5 19.Rfb1 g4 20.Ne1 h5 21.a6 Ba8 22.Rb8 Rb8 23.Rb1 Rb1 24.Qb1 Qe8 25.Qb3 Qc8 26.Qa4 Nd2 27.Qa5 Nc4 28.Bc4 dc4 29.Qa4 Kf7 30.Qc4 Be7 31.Nd3 Nf6 32.Nf4 Nd5 33.Nh5 Kg6 34.Nf4 Nf4 35.ef4 Kf7 36.Bb2 Qc7 37.g3 Qa5 38.Bc3 Qa3 39.Kg2 Qc1 40.Qb3 Kf6 41.d5 Kf7 42.d6 Bf6 43.Bf6 Kf6 44.Qb8 Qc5 45.Qa8 Qd5 46.Kg1 Qd6 47.Qa7 Qd1 48.Kg2 Qd5 49.Kg1 Qd1 50.Kg2 Qf3 51.Kg1 Qd1 ½–½. racvac001 (1665) – tisjeimir (1650), kurnik, 2012. (=1.Nf3 f5 2.d4 d5 3.b4)

4.c3 Bd6 5.Na3 c6 6.Rb1 Nf6 7.c4 Ne4 8.Qd3 0-0 9.g3 Be7 =.

4.Bd2 Bd6 5.e3 Nf6 6.c4 0-0 7.c5 Be7 8.Be2 b6 9.a3 a5 =.

4.a3 a5 5.b5 Ne4 6.Bf4 e6 7.e3 Bd6 8.Bd6 Qd6 9.c4 0-0 +=.

4.a3 e6 5.Bf4 a5 6.b5 Nbd7 7.e3 Bd6 8.Nbd2 Qe7 9.Qc1 e5 10.de5 Ne5 11.Be5 Be5 12.Ne5 Qe5 13.c4 Be6 14.Nf3 Qd6 15.Bd3 0-0-0 (15...0-0!?=) 16.c5+/– Qe7 17.Qc3 Ne4 18.Be4 de4 19.Nd4 White prepares c6 19...a4 (better is 19...f4!?+/–) 20.Qa5+– (20.Ne6?! Qe6 21.0-0 Kb8+/–) 20...Kd7 (20...Bd5 21.c6 (21.Qa4?! Qc5 22.0-0 Rhf8+/–; 21.Nf5?! Qc5 22.0-0 Bb3+/–) 21...Kb8 22.cb7 Bb7 23.Nc6 Kc8 24.Ne7 Kd7 25.0-0-0 Ke6 26.Qc7+–) 21.c6 (21.c6 Ke8 22.cb7+– (22.Ne6?! Qe6 23.cb7 Qc4+/–)) 1–0. Taulien,Hans_Juergen (2350) – Schroers,Uwe (2205), remoteschach.de, 2003.

4.Ba3 e6 5.e3 Bd6 6.c4 c6 7.c5 Bc7 8.Bd3 0-0 9.0-0 Ne4 =.

4.c3 Qd6 5.Qd3 a5 6.b5 Ne4 7.Nbd2 Nd7 8.c4 e5 9.e3 Nf2 =.

4.Bd2 e6 5.e3 Nbd7 6.c4 Ne4 7.Bd3 dc4 8.Bc4 Nb6 9.Bd3 Bd6 =.

4.Nbd2 e5 5.Ne5 Bb4 6.Rb1 Bc3 7.e3 0-0 8.Bd3 c5 9.Ba3 cd4 =+.

4.e3 e6 5.a3 Bd6 6.c4 0-0 7.c5 Be7 8.Bd3 b6 9.0-0 a5 +=.

4.Ne5 e6 5.a3 Nbd7 6.Bf4 Ne5 7.de5 Ne4 8.f3 Ng5 9.e3 Nf7 =.

4.Bf4 e6 5.a3 Bd6 6.e3 0-0 7.Be2 a5 8.b5 Ne4 9.0-0 Qf6 +=.

4.a3 Nf6 5.d4 e6 6.c4 Be7 7.Nbd2 0-0 8.Be2 a5 9.b5 c6 +=.

4.Ba3 Nf6 5.d4 e6 6.Be2 Bd6 7.0-0 Qe7 8.c4 dc4 9.Ne5 b5 =+.

4.Bb2 Nf6 5.a3 e6 6.Be2 Bd6 7.0-0 Nbd7 8.d4 0-0 9.c4 dc4 =.

4.c3 e6 5.d4 Bd6 6.Be2 Nf6 7.a3 0-0 8.0-0 Ne4 9.Ne5 Nd7 =.

4.c4 dc4 5.Bc4 b5 6.Bb3 e6 7.Bb2 Nc6 8.a3 a5 9.ba5 Na5 +=.

4.d4 e6 5.a3 Nf6 6.c4 Be7 7.Be2 dc4 8.Bc4 b5 9.Be2 0-0 =.

4.Be2 Qd6 5.Ba3 b5 6.d4 Nc6 7.0-0 Nf6 8.c3 e5 9.de5 Ne5 =.

4.Ne5 Nf6 5.d4 e6 6.a3 Nbd7 7.c4 Be7 8.Be2 dc4 9.Nc4 0-0 =.

4.a3 e5 5.Bb2 Nd7 6.c4 Ngf6 7.Nc3 dc4 8.Bc4 c6 9.Ng5 Nd5 +=.

4.Ba3 Nf6 5.d4 Nbd7 6.b5 c5 7.c4 e6 8.Nbd2 b6 9.Bd3 a6 +=.

4.b5 Nd7 5.d4 c5 6.bc6 Qc6 7.Bd3 e6 8.0-0 Ngf6 9.Ba3 b5 +=.

4.c3 e5 5.Ba3 Ne7 6.d4 e4 7.b5 Qf6 8.Nfd2 Be6 9.c4 f4 =.

4.a3 e6 5.d4 Nf6 6.c4 Be7 7.Ne5 0-0 8.Bd3 a5 9.b5 c6 =.

4.Ba3 e6 5.d4 Nf6 6.Bd3 a6 7.0-0 Bb5 8.Qe2 Bd3 9.Qd3 Nc6 =.

4.Bb2 Nf6 5.a3 e6 6.Be2 c5 7.bc5 Bc5 8.Bd4 Bd6 9.Be5 Be5 =.

4.c3 Nf6 5.d4 e6 6.a3 Bd6 7.c4 dc4 8.Bc4 b5 9.Bd3 a5 =.

4.Nc3 e6 5.a3 Nf6 6.d4 Bd6 7.Be2 Ne4 8.Bb2 a5 9.b5 c6 =.

4.d4 Nf6 5.c4 e6 6.a3 Be7 7.Ne5 0-0 8.Bd3 a5 9.b5 c6 =.

4.Be2 e6 5.a3 Nf6 6.Bb2 c5 7.bc5 Bc5 8.0-0 Nc6 9.c4 dc4 =.

4.Ne5 Nf6 5.a3 e6 6.Be2 Nc6 7.Bb2 Ne5 8.Be5 a5 9.b5 Bd6 +=.

4.Bb2 e6 5.a3 Ngf6 6.Nd4 Nb6 7.Bb5 Kf7 8.Nf3 a5 9.Ne5 Kg8 =.

4.d4 e6 5.a3 Ngf6 6.c4 Ne4 7.Bd3 dc4 8.Bc4 Nb6 9.Bd3 a5 +=.

4.Nd4 Ndf6 5.Bb5 Kf7 6.Bb2 e6 7.a3 Bd6 8.Nf3 a5 9.Ne5 Be5 =.

4.a3 Nf6 5.d4 Bd6 6.c4 0-0 7.c5 Be7 8.Bd3 b6 9.0-0 a5 +=.

4.Ba3 Bd6 5.c4 Nf6 6.d4 c6 7.c5 Bc7 8.Be2 0-0 9.0-0 Nbd7 =.

4.Bb2 Nf6 5.a3 c5 6.Bc3 Nbd7 7.bc5 Bc5 8.d4 Bd6 9.Bb4 Bb8 =.

4.b5 Nf6 5.d4 a6 6.ba6 Na6 7.Be2 Nb4 8.a4 Bd6 9.0-0 0-0 =.

4.c3 Bd6 5.d4 Nf6 6.Be2 0-0 7.0-0 Nbd7 8.b5 Ne4 9.Qb3 c5 =.

4.Ne5 Nf6 5.a3 Nbd7 6.Bb2 Bd6 7.f4 Be5 8.fe5 Ng4 9.Bb5 Qh4 =+.

4.a3 e6 5.d4 Be7 6.Be2 0-0 7.0-0 Nbd7 8.c4 a5 9.b5 Ne4 +=.

4.Ba3 Bd7 5.d4 e6 6.c4 a6 7.Qb3 b5 8.c5 Be7 9.Bd3 Nc6 +=.

4.Bb2 e6 5.a3 c5 6.bc5 Bc5 7.Be5 Nc6 8.d4 Qa5 9.Qd2 Bb4 =.

4.Bb2 e6 5.b5 Bd6 6.c4 0-0 7.Be2 c6 8.a4 Nbd7 9.Nd4 Nb8 10.Qc2 Ne4 11.d3 Ng5 12.0-0 e5 13.Nb3 f4 14.ef4 Rf4 15.Bc1 Rf7 16.cd5 Bd7 17.dc6 bc6 18.d4 cb5 19.Bb5 Qf6?? (19...Bf5 20.Qc4 Be6 21.Bg5 Bc4 22.Bd8 Bb3 23.de5 Be5+–) 20.Bg5+– Qg5 21.Bc4 (Better is 21.Qe4 Nc6 22.Bc6 Bc6 23.Qc6+–) 21...Bg4?? (Better is 21...ed4 22.Bf7 Kf7 23.Qh7 Nc6+–) 22.Bf7 Kf7 23.Qe4 (23...Nc6 24.Qd5 Be6 25.Qd6 Nd4 26.Nd4 ed4 27.Qd4+–) 1–0. Brinks,Jan Willem – Fakkel,Ewout, NED–ch U20 op, 2000.

4.b5 a6 5.Bb2 e6 6.Ne5 Be7 7.ba6 ba6 8.Qf3 Bb7 9.Na3 Nc6 =.

4.c3 e6 5.Be2 Bd6 6.d4 0-0 7.0-0 Nbd7 8.Qd3 Qe7 9.Nbd2 e5 =.

4.Nc3 e5 5.Ne5 Bb4 6.Bb2 0-0 7.a3 Ba5 8.Be2 Re8 9.Nf3 Ne4 =.

4.d4 e6 5.a3 Bd6 6.c4 0-0 7.c5 Be7 8.Bd3 b6 9.0-0 a5 +=.

4.Be2 Qd6 5.b5 e5 6.Ba3 Qe6 7.Bf8 Rf8 8.0-0 Nbd7 9.d4 Ne4 =.

3.c3 e5 4.d3=.

3.c4 e5 4.d3 e4 5.Nfd2 Nf6 6.e3 c6 7.Bb2 d5 8.Qb3 Be6 9.Nc3 dc4 10.dc4 Nbd7 11.Ne2 c5 12.Nf4 Bf7 13.bc5 Nc5 14.Qb5 Qd7 15.Bf6 gf6 16.Nd5 0-0-0 17.Qd7 ½–½. Hasangatin,Ramil (2520) – Kornev,Alexei (2555), RUS–ch sf Tula, 2003. (=1.Nf3 f5 2.b4 d6)

3.c4 e5 4.d4 e4 5.Ng5 d5 6.Qa4 Bd7 7.b5 c6 8.Nc3 Qe7 9.Rb1 Nf6 10.cd5 Nd5 11.Nd5 cd5 12.Qb3 Be6 13.Bd2 Nd7 14.Rc1 Nb6 15.Ne6 Qe6 16.Rc7 Rc8? (better is 16...Nc4!? 17.b6 ab6= (17...Qb6?? 18.Qa4 Qc6 19.Rc6+–; 17...Nd2?! 18.Kd2 ab6 19.e3+=)) 17.Rb7+/– Rc4 (17...Rc1 18.Bc1 Qc8 19.Bf4 Qb7 20.e3+/–) 18.Rb8 (18.Ra7 Qc8 19.e3 Rc1 20.Ke2 Qb8+–) 18...Kf7 (18...Nc8 19.e3 Bd6 20.Rb7+/–) 19.e3 (better is 19.Rb7!? Be7 20.Ra7+–) 19...Qd6? (better is 19...Rc7+=) 20.Rb6 (20.Rb6 ab6 21.Bc4 dc4 22.Qc4 Qe6 23.d5+–) 1–0. Dumitran,Octavian (2260) – Boonekamp,Maarten (2040), FRA–chT2 North, 2008. (=1.Nf3 f5 2.b4 d6)

3.c4 g6 4.Bb2 Nf6 (4...e5 5.e3= (5.Nc3 Nf6 6.Qb3 Be7 7.c5 Nc6 8.e3 a6 9.cd6) 5...Nf6 6.Nc3 Be7 7.Be2 e4 8.Nd4 0-0 9.Nd5) 5.Bf6 (5.Nc3 Bg7 6.Qb3 0-0 7.c5 d5 8.e3 Nc6 9.Be2; 5.d4 Bg7 6.Nc3 0-0 7.e3 a5 8.b5 Nbd7 9.Be2) 5...ef6 6.e3 (6.Nc3 Nc6 7.Nd5 Kf7 8.h4 Be6 9.h5) 6...Be6 (6...f4 7.ef4 (7.Nc3 Bg7 8.ef4 0-0 9.Be2) 7...Bh6 8.g3+= (8.Nc3 0-0 9.Be2) 8...0-0 9.Nc3; 6...Bg7 7.Nc3 0-0 8.Bd3 Nc6 9.Qb3) 7.Nc3 (7.Nd4 Bd7 8.b5 c5 9.Nf3) 7...c6 (7...Bg7 8.d4+= (8.Nd4 Bd7 9.b5) 8...0-0 9.Bd3; 7...Kf7 8.d4 a5 9.b5) 8.Rb1 (8.Bd3 Na6 9.a3) 8...Nd7 9.d4 (9.Nd4+=) 9...a5 (9...d5 10.cd5 cd5 11.Qb3+=) 10.d5 Bf7 11.dc6 bc6 12.a3 (12.b5!?+/–) 12...ab4= 13.ab4 Ne5 14.Ne5 (14.Nd2 Ra3 15.Qc1 Ra8+=) 14...fe5 15.Be2 (15.b5 Ra3 16.Qd2 Qa5=) 15...Bg7 16.e4 0-0 17.0-0 fe4 18.Ne4 (18.Qd2 d5=) 18...d5+= 19.cd5 cd5 20.Nc5 e4 21.Bg4 Qe7 22.Qd2 h5 23.Bh3 Kh7 24.Rfe1 Bg8 25.f3 Ra3 26.fe4 Bc3 27.Qc1 Be1 28.Qa3 Bf2 29.Kh1 de4 30.Nd7 Rf7 31.Qb2?? e3–+ 32.Qe2 Rf4 33.Rc1 Bc4! 34.Rc4?? Rc4 35.Qc4 e2 36.Nf8 Kh6 37.Qc1 Qe3 (37...Qe3 38.Qe3 Be3 39.g3 e1Q 40.Kg2 Qf2 41.Kh1 Qg1#) 0–1. Tate,E (2410) – Bartel,Mat (2565), III Open, Calvia ESP, 2006. (=1.Nf3 f5 2.b4)

3.d3 e5= 4.c4 Nf6 5.Nc3 e4 6.Nd4 c5 7.Nc2 d5 8.Bg5 Be7 (worse is 8...cb4 9.Bf6 Qf6 10.Nd5+=) 9.bc5 Qa5 (9...dc4 10.de4 Qa5 11.Qd2=) 10.Bd2 (10.Qd2 Qc5 11.d4 Qc4+=) 10...Qc5= 11.Nd5 Nd5 12.cd5 Qd5 13.de4 Qe4 14.Bc3 0-0 15.e3 Nc6 16.Qd3 ½–½. Passerotti,P – Flear,C, Roma, 1990. (=1.Nf3 f5 2.b4)

3.d4 c6 4.c4 Nf6 5.Bb2 a5 6.b5 cb5 7.cb5 Nbd7 8.e3 Nb6 9.Nbd2 Be6 10.Bd3 g6 11.Ng5 Bd5 12.f3 Bh6 13.h4 Nh5 14.e4 Nf4 15.Bf1 e5? (15...fe4 16.fe4 Bg5 17.hg5+/– (worse is 17.ed5 Bf6+=)) 16.g3 (16.ed5!? Bg5 17.hg5 Qg5+–) 16...Bg5+/– 17.ed5 Bf6? (better is 17...Be7!? 18.gf4 Bh4 19.Ke2 ef4+=) 18.de5+– (18.gf4?! Bh4 19.Ke2 ef4+=) 18...de5 19.gf4 Bh4 20.Ke2 Nd5 21.Qa4 (21.fe5?! Nf4 22.Ke3 Nd5 23.Kd3 Nb4 24.Kc3 Nd5 25.Kd3 Nb4 26.Kc3 Nd5 27.Kd3=) 21...Qb6 22.Rh4 Qe3 23.Kd1 Qf2 24.b6 Kd8 25.Qa3?? Ne3= 26.Qe3 Qe3 27.fe5 f4 28.e6 Ke7 29.Bh8 Rh8 30.Rc1 h5 31.Rc7 Ke6 32.Rh2 Qd4 33.Bc4 Kf6 34.Kc2 Re8 35.Rg2 g5 36.Nb3 Qb6 37.Rf7? Kg6–+ 38.Rf4 Rc8 39.Re4–/+ a4 40.Nd2 a3 41.Kd1 Qb2 42.Bd3 Kf6 43.f4 g4 44.Re5 Rc1 45.Ke2 Rh1 46.Rb5 Qa2–/+ 47.Rb6 Ke7 48.Rb7 Kd8 49.f5? Qa1–+ 50.Rb1 Qe5 51.Kf2 Rh3 (51...Rh3 52.Be2 Qf5 53.Kg1 Qc5 54.Rf2 g3–+) 0–1. Mista,Aleksander (2075) – Kruczynski,Marek (2375), Jaroslawiec op–A Poland, 1995. (=1.Nf3 f5 2.b4 d6)

3.d4 c6 4.c4 Nf6 5.Nc3 Qc7 6.Bg5 Ne4 7.Bd2 a5 8.Ne4 fe4 9.Ng5 Bf5 10.g3 (10.ba5!? h6 11.g4+=) 10...ab4= 11.Bb4 d5 12.Qb3 Qd7 (12...e5 13.Bf8 Rf8 14.cd5 ed4 15.Qb4–/+) 13.h4 Na6 14.Bd2 e5 15.cd5 ed4 16.dc6 bc6 17.Bg2 Nc5 18.Qd1 Bd6 19.Nh3 (better is 19.Bc1!? d3 20.Be3–/+) 19...e3!–+ 20.fe3 Bg3 21.Nf2 Ne4 22.Be4 Be4 23.0-0 Bf2 24.Rf2 Qg4 25.Kf1 Qh3 26.Ke1 Qh1 27.Rf1 Qh4 28.Rf2 Rf8 (28...Rf8 29.Bb4 Qf2 30.Kd2 Qe3 31.Ke1 Bg2 32.Bf8 Qg3 33.Kd2 Qc3) 0–1. Dufek,V – Vesely,Jaromir, Prague Bohemians, 1977. (=1.Nf3 f5 2.b4)

3.d4 Nd7 4.g3 e5 5.Nc3 (5.Bh3 e4 6.Nh4 g6+=) 5...e4 6.Nh4 g6 (6...Nb6 7.Bh3 g6 8.a4=) 7.Bh3 (7.a4 Bg7=) 7...Nb6= 8.0-0 d5 9.Rb1 (9.a3 Bg7=) 9...Bg7 10.Ng2 Nf6 11.Bg5 h6 12.Bc1 (12.Bd2 0-0 13.b5 g5–/+) 12...0-0 13.a4 g5 14.a5 Nc4 15.Ne3 Ne3 16.fe3 (16.Be3?? f4 17.Bc8 Qc8 18.Bf4 gf4 19.gf4 Qg4 20.Kh1 Qh3–+) 16...g4 (16...Ne8 17.Bg2+=) 17.Bg2 Be6 18.b5 Rf7 19.Na2 h5 20.Nb4 White plans a6 20...Bf8 (20...Rb8 21.Bd2=) 21.a6 (21.Bd2 Bd6 22.Be1 Bd7+=) 21...ba6 22.Na6 (22.ba6 Qe8=) 22...h4+= 23.gh4 Nh5 24.Qe1? (24.Nc5 Bc8 25.Bd2–/+) 24...Bd6–/+ Black intends g3 25.Nc5 Bc8 26.c4 (26.Na6 g3 27.h3 Qh4–+) 26...dc4 27.Rb2 (27.Rb4 g3 28.h3 Qh4–+) 27...g3 (27...Qe7!?–+) 28.h3–/+ Qh4 (28...Qh4 29.Qc3 f4–+) 0–1. marekt (2170) – rabscuttle (2340), gameknot.com, 2017.

3.e3 e5 4.Bc4 c6 5.Bb2 Nf6 6.a3 g6 7.Nc3 Bg7 8.0-0 Qe7 9.d4 (9.Qe1 d5 10.Bb3 Nbd7=) 9...Nbd7 (9...e4 10.Nd2=) 10.Re1 (10.de5 Ne5 11.Ne5 de5=) 10...e4 11.Nd2 d5 12.Ba2 (12.Be2 b5=) 12...g5 (12...0-0 13.Ne2+=) 13.Ne2= ½–½. pumpkin (2255) – clochard (2245), net–chess.com, 2003. (=1.Nf3 f5 2.b4)

4.d3 g6 5.Nbd2 (5.e3 Bg7=) 5...Bg7 6.e4 Nf6 7.c4 0-0 8.c5 Kh8 9.Be2 Nh5 10.cd6 cd6 11.g3 (11.0-0 Nf4=) 11...Na6 12.a3 f4 (12...Nf6!?=) 13.d4+= Qe7 14.de5 de5 15.Nc4 Bh3 16.Rg1 (16.Nce5? Bg2 17.Nh4 Be4-+; 16.Nfe5 b5 17.Qd6 Rae8 18.Qe7 Re7-/+) 16...Rad8 17.Qc2 Rc8 18.b5 (worse 18.Be5 b5 19.Rd1 A) 19...bc4?! 20.Bd6 Qb7 21.Bf8 Bf8 22.g4 (22.Bc4? Nb4 23.ab4 Qb4 24.Nd2 Be6-+) 22...Nb4 A1) worse 23.ab4 Bb4 (23...Qb4?! 24.Rd2 Nf6 25.g5=) 24.Nd2 Nf6-/+; A2) 23.Qc3 Ng7 A21) 24.ab4 Bb4 (24...Qb4?! 25.Rc1 Qb6 26.Nd2-/+; 24...Qe4? 25.Ng5 Qe7 26.Nh3+-) 25.Qd2 Bd2 26.Nd2 c3-+; A22) 24.Ng5=; B) 19...Rc4?! B1) worse 20.Bc4 Be5 (20...bc4? 21.Bd6 Qf6 22.Bf8 Bf8 23.g4+-) 21.Be2 Nb4-/+; B2) 20.Bg7 Kg7 21.Bc4 bc4 22.Nd2= (worse 22.Qc4 fg3 23.hg3 Rf3 24.Qa6 Nf6-+); C) 19...Be5 20.Nfe5 fg3 21.hg3 bc4-/+) 18...fg3 (18...Bg4 19.ba6 Bf3 20.Bf3=) 19.hg3+/- (19.ba6? gf2 20.Kf2 Qc5 21.Ne3 Qc2 22.Nc2 Rc2-+) 19...Qc5 (19...Nc5!?+/-) 20.ba6+- b5 21.Ne3?? (better 21.Bc3 Rf3 22.Bf3 Qc4 23.Rc1+-) 21...Qc2=+ 22.Nc2 Rc2 23.Be5 Re2 24.Ke2 Bg4 25.Bg7 Ng7 (25...Kg7 26.Rgb1 Rf3 27.Ke1=) 26.Rgb1= Ne6 27.a4 b4 (27...Ng5 28.Rb5 Bf3 29.Ke3 Ne4 30.Rb7 Nf2 31.Ra7 Nd1 32.Kd4 Rd8 33.Ke5=) 28.Rb4+= Rf3 29.Kf1 Nc5 (29...Kg7 30.Rb7 Rf7 31.Rab1+/-) 30.Rc1+/- Na6? (better 30...Nd3 31.Rb8 Kg7 32.Rb7 Kf6+-) 31.Rb7+- Ra3 (31...Rd3 32.Ra7 Nb8 33.Re7+-) 32.Rc4 (better 32.Rc6 Ra4 33.Rf6 Kg8+-) 32...Be6 33.Rd4 Bg8 1-0. Poley,V (2310) - Koziak,V (2425), Ustron Open A, 2020. (=1.Nf3 f5 2.b4)

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.Nf3).

4.e3 Nf6 5.a3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.a3 Nf6 5.Nf3).

4.Bb2 d5 5.Nc3 e6 6.b5 Bb4 7.a3 Ba5 8.g3 0-0 9.Bh3 c6 10.a4 cb5 11.ab5 b6 12.0-0 Bc3 13.Bc3 h6 14.Ne5 Nbd7 15.Nc6 Qe8 16.Na7 Bb7 17.Bg2 Ne4 18.Bb4 Rf7 19.f3 Ng5 20.Qd2 Nf6 21.Qf4 Qd7 22.Rfc1 Nh5 23.Qe5 Nh7 24.Nc6! Ra1 (24...Bc6 25.bc6 Passed pawn) 25.Ra1 Bc6 26.bc6 Qc6 27.Qb8 Nf8 28.Ra8 (28.Ra8 Nf6 29.Qd8+– (29.Bf8?! Nd7 30.Qc8 Qc8 31.Rc8 Rf8+/–)) 1–0. Janek – Carjhon, internet, 2016.

4.Bb2 e6 5.c4 Be7 6.e3 0-0 7.Be2 c6 8.Nc3 Ne4 9.Qc2 d5 10.a3 Nd7 11.0-0 Ndf6 12.Ne5 Bd7 13.c5 Nc3 14.Bc3 Ne4 15.Be1 Be8 16.a4 Bf6 17.f3 Ng5 18.b5 Nf7 19.bc6 bc6 20.Nf7 Rf7 21.Qc3 Qc7 (21...Bg5 22.Rb1+/-) 22.Bg3 Qc8 23.Rab1 Bd8 24.a5 Bc7 25.Bc7 Qc7 26.a6 Rb8 27.Qa1 Rf8 28.Rb8 Qb8 29.Rb1 Qa8 30.Rb7 Bg6 31.Bd3 Rd8 32.Qb1 Be8? (better 32...Rc8!?+/-) 33.g4+- g6 (33...Kh8 34.gf5 ef5 35.Rc7+-) 34.gf5 gf5 (34...ef5 35.Bf5! Bf7 36.Bd7+-) 35.Qe1 (35.Bf5!? ef5 36.Qf5 Bd7 37.Rd7 Rd7 38.Qd7 h5+-) 35...Rb8 (35...Bf7+-) 36.Qg3 (36.Qg3 Bg6 37.Rb8 Qb8 38.Qb8 Kg7 39.Qa7 Kf8 40.Qb8 Kf7 41.a7 Kg7 42.a8Q Be8 43.Qab7 Bf7 44.Qe7 h5 45.Qbf8 Kg6 46.Qff7 Kh6 47.Qfe6) 1-0. marekt (2170) - pbraham (1930), gameknot.com, 2017.

4.Nc3 g6 5.e3 Bg7 6.Bc4 Nbd7 (6...c6!?=) 7.0-0. pillsbury (2140) – alaamattar (2345), net–chess.com, 2016.

4.c4 g6 5.Bb2 Bg7 6.e3 0-0 7.c5 a5 8.cd6 cd6 9.b5 Kh8 10.Bc4 Nbd7 11.a4 (11.Ng5 Qe8 12.Ne6 Nb6 13.Ng7 Kg7+=) 11...Ne4 12.0-0 Nb6 13.Bb3 d5 14.Nbd2 Be6 15.Rc1 Qd6 Black intends f4 16.Ne5 f4 17.ef4 Rf4 18.f3 Ng5 19.Qe2 (19.Re1 Nd7+=) 19...Nd7 (19...Na4!? 20.Qe3 Be5 21.de5 Qb6 22.Qb6 Nb6=) 20.Rfe1 Ne5 21.de5 Qb6 22.Qf2 Qd8 23.h4 Nf7+= 24.g3 Rf5 Increases the pressure on e5 25.f4 g5 26.Nf3 gh4 27.Nh4 Rh5 28.Bd1 Rh6+/– 29.g4 Qg8 30.g5 Rh4 31.Qh4 Nh6 32.Bc2 Nf5 33.Bf5 Bf5 34.Rc7 Rc8 35.b6 Qe6 36.Rc8 Qc8 37.Rc1 Qd7 38.e6 Qd8? 39.Bg7+– Kg7 40.Rc7 Qe8 41.g6 (41.g6 Qg6 42.Kf2 Be6 43.Qe7 Kh8 44.Qd8 (44.Rb7?! Qc2 45.Kg1 Qd1 46.Kh2 Qe2 47.Kg3 Qe1 48.Kg2 Qe2 49.Kh1 Qf3 50.Kh2 Qe2 51.Kg3 Qe1 52.Kf3 Qe4 53.Kg3 Qe1=) 44...Bg8 45.Rb7 Qc2 46.Kg3 Qb3 47.Kh4+–) 1–0. Gorbatow,A (2415) – Toulzac,PY (2250), Open FIDE St Quentin FRA, 1999. (=1.Nf3 f5 2.b4)

4.c4 g6 5.g3 Bg7 6.Bb2 0-0 7.Qb3 Qe8 8.Nc3 c6 9.Bg2 e5 10.de5 de5 11.Ng5 h6 12.Nf3 e4 13.Nd4 Bd7 14.e3 Na6 15.c5 Kh7 16.Qc4 Nc7 17.Qe2 Ng4 18.Nb3 Ne5 19.Nc1 Be6 20.Qc2 Bc4 21.Nd1 Ba6 22.a4 Nd5 23.Qb3 Bc4 24.Qa3 Bd3 (24...a5!? 25.Bd4–+) 25.Qb3 Bc4 26.Qa3 Rd8 27.Bd4 Nf3 28.Bf3 Bd4 (28...ef3 29.Bg7 Kg7 30.Qb2 Kh7 31.Qc2–+) 29.ed4 ef3 30.Ne3 (30.Kd2 Qe4 31.Qb2–+) 30...f4 31.gf4 Nf4 (31...Rf4 32.Ne2 Be2 33.b5 Rd4 34.Rc1 Ne3 35.fe3 Qe4 36.ed4 Bd1 37.Kd2 Qd4 38.Ke1 Qd2 39.Kf1 Qg2 40.Ke1 Qe2) 32.Qc3 Be2 (better is 32...Qe4 33.Nb3 Nd3 34.Kd2 Bb3–+) 33.Kd2 Qe4 34.Nb3 Ng2 35.Rhg1 Ba6 36.b5 cb5 37.ab5 Bb5 38.Ra7 Ne3 39.Qe3 Qe3 40.Ke3+= Rde8 41.Kd2 Re2 42.Kc3 Bc6 43.Na5 Be4 44.Rg4 Bd5 45.c6 Rf2 46.Rb7 Kh8 47.Rg6?? Rh2–+ 48.Rgg7 Be4 49.Rgf7= Rc2 50.Kb4 Rf7 51.Rf7 Kg8 52.Rf4 Bd5 53.Kb5 f2 54.c7 Rc7 ½–½. Bernardt,Rainer Georg (1805) – Betz,Egon (1885), Wuerttemberg–ch Seniors, 2003. (=1.Nf3 f5 2.b4 d6)

4.e3 g6 5.Bb2 Bg7 6.Nbd2 0-0 7.Bd3 e5 8.de5 Ng4 9.Nc4 d5 10.h3 Nh6 11.Ncd2 Nf7 12.c4 (12.Rb1 Nc6=) 12...Nc6 Increases the pressure on e5 13.Qb3 Be6 (better is 13...Nfe5!? 14.Ne5 Ne5 15.Be5 Be5=) 14.cd5 Bd5 15.Bc4 Bf3 16.Nf3 (16.gf3?! Nce5 17.Rd1 Qe7=) 16...Qe7 17.Rd1 Nce5 18.Be5 Be5 19.Ne5 Qe5 20.Rd7 Qe8 (20...Qf6 21.Rc7 b5 22.Bd5+–) 21.Rc7 Rc8 (better is 21...b5 22.Be6 a5+–) 22.Rb7 Kh8 (22...a6+–) 23.Bf7 (23.Bf7 Qe5 24.0-0+–) 1–0. Rukavina,J (2420) – Jorgensen,J (2195), 21st World Seniors, 2011. (=1.Nf3 f5 2.b4)

4.e3 g6 5.Bb2 Bg7 6.Be2 0-0 7.0-0 c6 8.c4 Ne4 9.Qc2 Nd7 10.Nc3 Nc3 11.Qc3 e5 12.de5 de5 13.Rad1 Qe7 14.c5 Bf6 15.Bc4 Kg7 16.Qd2 e4 17.Bf6 Qf6 18.Nd4 Ne5 19.Qc2 a5 20.b5 Rd8 21.b6 a4 22.f3 (22.a3 Ra5 23.Ba2 Nd3=) 22...Ra5 (22...ef3 23.Nf3 Rd1 24.Rd1 Nf3 25.gf3+=) 23.f4 (better is 23.Be2!? ef3 24.Bf3 (worse is 24.gf3 Rd5+=; worse is 24.Nf3 Rd1 25.Qd1 Nd7+=) 24...Nf3 25.Nf3 (worse is 25.gf3 Rd5–/+) 25...Rd1 26.Rd1+=) 23...Nc4= 24.Qc4 Rd5 25.Rc1 Rdc5 26.Qc5 Rc5 27.Rc5 Be6?? (27...Kf7 28.Rfc1 Bd7 29.R5c4–/+) 28.Rc2?? (better is 28.Rc6 bc6 29.b7+–) 28...Bd5–/+ 29.Rb1 Qd6 30.Kf2 Kf6 31.g3 Ke7 32.Ke2? Qa3 33.Rbc1? Qb4 34.Rc3 Qb6 35.R1c2? Qb1 36.Kf2 Qh1 37.h4 Qh2 (37...Qh2 38.Kf1 Qg3–+) 0–1. Streich,Bernd – Bartolomaeus,Christian (2200), Leipzig VfB op, 1996. (=1.Nf3 f5 2.b4 d6)

4.g3 g6 5.Bg2 Bg7 6.Bb2 0-0 7.0-0 Qe8 8.Qd3 Kh8 9.Nbd2 e5 10.de5 Ng4 11.Nc4 de5 12.Qc3 Rf7 13.Nfe5 Re7 14.Ng4 fg4 15.Qd2 Nc6 16.Bg7 Rg7 17.Rad1 Be6 18.Qc3 Qe7 19.Bc6 bc6 20.Ne5 Ba2 21.Ng4 Bd5 22.Nf6 Rb8 23.Nd5 cd5 24.Rd5 Rb4 25.Rfd1 Rb8 26.Rd7 Qf8 27.Rc7 (27.Rc7 Kg8 28.Rdd7 Rd7 29.Rd7+–) 1–0. Poley,Vladimir (2395) – Hedman,Erik (2310), Manhems op SWE, 1998. (=1.Nf3 f5 2.b4 d6)

5.c4 Bg7 6.e3 0-0 7.Be2 e6 8.0-0 Qe7 9.Nc3 Nc6 10.b5 Nd8 11.a4 Nf7 12.a5 g5 13.Qb3 g4 14.Nd2 e5 15.Rfe1 Be6 16.Nd5 Qd7?? (better is 16...Qd8+=) 17.Nf6+– Bf6 18.d5 Ng5 19.de6 Qe6 20.b6 cb6 21.ab6 a6 22.Rac1 Rac8 23.Ba3 Rfd8 24.Qd3 Rc6 25.Qd5 Qd5 26.cd5 Rb6 27.Rb1 Rb1 28.Rb1 b5 29.Rc1 Nf7 30.Rc6 Ra8 31.Bd6 Kg7 32.Bc5 h5 33.Rb6 Bd8 34.Rb7 Rc8 35.Nb3 Ra8 36.Ra7 Ra7 37.Ba7 Nd6? (better is 37...Be7+–) 38.Nc5 1–0. Franke,Reiner (2270) – Wesseln,Kai (2365), BL2–N, 1998. (=1.Nf3 f5 2.b4 d6 3.d4 Nf6)

5.e3 c6 6.a4 Bg7 7.Be2 0-0 8.0-0 Nbd7 9.c4 e5 10.de5 de5 (10...Ne4!?+=) 11.Ne5+/- (worse 11.Be5 Ne5 12.Ne5 Ng4-/+) 11...Ne5 12.Be5 Qe7? (better 12...Re8!? 13.Qd8 Rd8+/-) 13.Bd6+- Qe4 (13...Qe8 14.Bf8 Qf8 15.Qb3+-) 14.Bf8 Bf8 15.Qd8 Kg7 16.Nd2 Qc2 (16...Qe7 17.Qe7 Be7 18.b5+-) 17.b5 cb5 (17...Bb4 18.Rfd1 Bc3 19.Qe7 Kh8 20.Nf3+-) 18.Rac1 (worse 18.ab5 Qc3+-; worse 18.cb5 Qc5+-) 18...Qa4 (18...Bd7 19.Qa8 (19.Rc2?! Rd8 20.ab5 a5+-) 19...Qd2 20.Bf3 ba4 21.c5+-) 19.cb5 Qa2 20.Rc7 Nd7 (20...Bd7 21.Qa8 Qd2 22.Bf3+-) 21.Rc8 Rc8 22.Qd7 Kh6 (22...Be7 23.Rd1 Ra8 24.Qe7 Qf7 25.Qd6+-) 23.Qc8 Qd2 (23...Be7 24.Rd1 b6+-) 24.Qf8 Kg5 25.f4 Kh4 26.Qh6 1-0. PEREIRA – ArturoP, internet, 2022.

5.e3 Bg7 6.c4 0-0 7.Qb3 c6 8.Be2 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 Qc7 12.0-0 Nbd7 13.Ng5 Nb6 14.c5 Nbd5 15.Nc3 h6 16.Nf3 Kh7 17.Nd5 Nd5 18.Bc4 Nf6 19.cd6 ed6 20.b5 Ne4 21.Rc1 c5 22.dc5 dc5 23.b6 Qe7 24.Bg7 Kg7 25.Qb2 Qf6 26.Qb1 Rd8 27.Bd3 Nc3 28.Qc2 Na2 29.Qa2 Rd3 30.Qa5 Rd5 31.h3 Qd6 32.Qa1 Qf6 33.Qa5 Qd6 34.Qa1 Qf6 35.Qa5 ½–½. Laihonen,Petteri (2275) – Kauppinen,Martti (2235), FIN–chT qual, 1999. (=1.Nf3 f5 2.b4 d6 3.d4 Nf6)

5.e3 Bg7 6.c4 e6 7.Be2 Qe7 8.Qb3 Nc6 9.0-0 0-0 10.b5 Nd8 11.a4 Nf7 12.Nbd2 g5 13.c5 g4 14.cd6 cd6 15.Ne1 b6 16.Nd3 Bb7 17.Nf4 Rfe8 18.a5 e5 19.Nd3 Bd5 20.Qa3 ba5 21.Rfc1 Qb7 22.Qa5 Re7 23.Bf1 Ne4 24.Nc4 Rc8 25.Nb4 Rc4? (better is 25...Nf6+/–) 26.Nd5+– (26.Rc4?! Bc4 27.Bc4 Rc7+–) 26...Rc1 27.Ne7 (27.Ne7 Qe7 28.Rc1+–) 1–0. Mrozinski,Werner (1925) – Richter,Rainer (2045), Ruhrgebiet Regionalliga, 2004. (=1.Nf3 f5 2.b4 d6 3.d4 Nf6)

5.e3 Bg7 6.Be2 0-0 7.c4 c6 8.a4 Qe8 9.Qb3 Kh8 10.Nbd2 Nbd7 11.0-0 Ne4 12.Rfd1 Ndf6 13.a5 g5 14.Ne4 fe4 15.Nd2 (worse is 15.Ng5 Qg6 16.f4 h6–/+) 15...Qg6 16.Qc2 d5 17.Rf1 Bf5 18.b5 Rac8 19.Qa4 Bg4 20.Bg4 Ng4 21.a6 ba6 22.Qa6?? (22.Qd1 Qf5 23.Ra6 cb5 24.cd5 Rc7+=) 22...dc4?? (better is 22...Qd6 23.g3 Qh6–+) 23.Nc4+= cb5 24.Qb5 Rc4 25.Qc4 Qd6 26.g3 Qh6 27.h4 gh4 28.Qe2 Rf3–+ 29.Qa6 Nf6?? 30.Qc8 Bf8 31.Qh3 hg3= 32.Qh6 Bh6 33.fg3 Rg3 34.Kf2 Re3 35.d5 Kg8 36.Bf6 ef6 37.Rad1 Rf3 38.Kg2 Rd3 39.d6 Kf7 40.Rh1? Bf4 41.Rh7–/+ Ke6 ½–½. Laihonen,Petteri (2245) – Galyas,Miklos (2300), HUN–chT, 1996. (=1.Nf3 f5 2.b4 d6 3.d4 Nf6)

5.e3 Bg7 6.Be2 0-0 7.Nbd2 e6 8.c4 Qe7 9.Rc1 c6 (9...Nbd7 10.c5+=) 10.b5 (10.c5 Nbd7+=) 10...c5= 11.a4 b6 12.a5 Nbd7 13.dc5 (13.a6 Re8+=) 13...Nc5 14.Nd4 (14.a6 e5=) 14...Bb7 (14...ba5 15.Nc6 Qc7 16.Nb3 Nb3 17.Qb3=) 15.0-0= e5 (15...ba5 16.N4b3=) 16.a6+= Be4 (16...Bg2 17.Kg2 ed4 18.Bd4=) 17.Ne4+/- Nfe4 18.Nc6 Qe6 19.Bf3 Rf7 20.Qe2 (20.Rc2 Rc8+=) 20...g5 (20...Rc8 21.Nb4+=) 21.Be4 (21.Ba3 Raf8+/-) 21...Ne4 (21...fe4 22.Qh5+=) 22.f3 Nc5 23.Rcd1 e4 24.Bg7 Kg7 25.f4 (25.Rd5 Raf8+/-) 25...gf4 26.ef4 Qf6 27.Rd5 Nd3 28.Qe3 h6 (better 28...Rc8!?+=) 29.Nd4+- Qg6 30.Kh1 (better 30.Nf5!? Rf5 31.Qe4 Rd5 32.Qd5+-) 30...Rc8 31.g4 fg4 32.f5 Qf6 33.Qe4 Ne5 34.Ne6 Kh7 (34...Kg8 35.Rd6 h5 36.c5 Rc5 37.Rd8 Kh7 38.Qa8+-) 35.Rd6 Rc4 36.Nf8 (better 36.Qe2 Rc5 37.Qd1+-) 36...Kg8+= 37.Qd5 (worse 37.Rf6 Re4 38.Rf7 Kf7-/+) 37...Qh4?? (better 37...Rc5 38.Qd4 Qh4=) 38.Ng6+- Rc2 39.Nh4 (39.Nh4 Kh7 40.Qe6 Rc8 41.Qc8 g3 42.Ng6 g2 43.Kg2 Rf8 44.Qf8 Ng6 45.fg6; 39.Qa8 Rc8 40.Qc8 Qd8 41.Qd8 Rf8 42.Qf8 Kh7 43.Qh8) 1-0. Meshkovs,Nikita (2585) - Omelja,A (2495), Titled Tue 4th Aug, 2020. (=1.Nf3 f5 2.b4)

4.e3 Bg7 5.Bb2 Nf6 6.c4 0-0 7.Nbd2 e6 8.Rc1 b6 9.c5 Bb7 10.Be2 Bd5 11.a3 (11.cd6 Qd6 12.Qa4 a6=) 11...Nc6 12.0-0 h6 (12...a6 13.cb6 cb6 14.Ng5=) 13.Ba6 Ne7 (13...dc5 14.dc5 Rb8 15.Bb5+=) 14.Qc2 (14.cd6 cd6 15.Qe2 Qd7+=) 14...g5 15.cd6 cd6 16.Qc7 (16.Nb1 Qd7+=) 16...Rf7= 17.Qd8 Rd8 18.Rc2 g4 19.Ne1 h5 20.Nd3 Bh6 21.Nf4 Bf4 22.ef4 Ba8 23.Re1 Ne4 24.Nf1 Nd5 25.g3 Re7 26.Bd3 Nef6 27.b5 Kf7 28.Rce2 Rdd7 29.Nd2 Rc7 30.Nc4 Ne8 31.Rc1 Ndf6 32.Rec2 Kf8 (32...Kg6 33.a4=) 33.a4 Be4 34.Be4 Ne4 35.Ba3 Kg8 36.Kf1 Rc8 37.Ne3 (37.Ne5 Rc2 38.Rc2 Kg7+=) 37...Rec7= 38.Rc7 Rc7 (worse is 38...Nc7 39.d5 Nc5 40.de6 N7e6 41.Nf5+-) 39.Rc7 Nc7 40.Nc4 d5 41.Nd6 Nc3 42.Ke1 h4 (42...Kg7!?=) 43.gh4+= Kg7 (43...Na4? 44.Kd2+-) 44.Bc1 a6? (better is 44...Na4 45.Kd2 a6 46.ba6 Na6+=) 45.a5!+- Na4 (45...ba5 46.b6 Passed pawn) 46.Nc8 ab5? (better is 46...ba5 47.b6 Nb6 48.Nb6 Kg6+-) 47.ab6 Na6 48.Kd2 Kg6 (48...Nb6 49.Nb6 Kg6 50.Ba3+-) 49.b7 Kh5 (49...b4 50.Kc2 Nc3 51.Nd6+-) 50.Ba3 Kh4 51.Na7 Kh3 52.Nb5 Kh2 (52...Nb6 53.Ke2 Nd7 54.Na7+-) 53.Bd6 (better is 53.Nc7 Nb8 54.Bd6+-) 53...Kg2 (53...Nb6+-) 54.Ke2 Nb6 55.Bb8 (better is 55.Nc7 Nb8 56.Ne6+-) 55...Nd7?? (better is 55...Nb8 56.Nc7 Nc4 57.Ne6 Nc6-+) 56.Be5+- 1-0. Meshkovs,Nikita (2555) - Gazik,Viktor (2495), Northwest Cup Final A, 2019. (=1.Nf3 f5 2.b4)

4.g3 Bg7 5.Bb2 Nh6 6.Bg2 Nf7 7.0-0 Nd7 8.c4 0-0 9.Nc3 (9.Nbd2 a5 10.a3 e5+=) 9...e5 10.de5 de5 11.e4 f4 12.b5 (12.Qe2 fg3 13.hg3 Nf6+/–) 12...g5 13.h3 h5 14.Nh2 (14.Ba3!?+/–) 14...Nf6 (14...Nb6 15.Ba3 Qd1 16.Rfd1= (worse is 16.Nd1 Rd8–/+)) 15.Nd5 h4 16.gf4 gf4 17.Kh1 (17.Qb3 Nd5 18.Rad1 Qf6 19.Rd5 Be6=) 17...c6 18.Nf6 Qf6 19.Rg1 (19.Ng4 Qg6+=) 19...Be6 (19...Rd8 20.Qe2+=) 20.bc6 bc6 21.Bf3 (21.Ng4 Qe7=) 21...Bc4 (21...Bh3 22.Bh5 Rab8 23.Rb1=) 22.Ng4 (22.Qc2 Ba6=) 22...Qe7 (22...Qe6!? 23.Qc2 Rfb8–/+) 23.Rc1 (23.Qc2 Qe6 24.Nf6 Kh8=) 23...Rad8 (23...Rab8 24.Be5 (worse is 24.Rc4 Rb2 25.Rc6 Kh7=) 24...Ne5 25.Ne5 Qe5 26.Rc4+=) 24.Qc2+= Bb5 25.a4 Rd3 26.ab5 Rf3 27.Kg2 Ng5 28.bc6 Rh3 29.c7 Rc8 30.Kf1 (30.Qc6!? Rb3 31.Qd5 Qe6 32.Qd8 Kh7 33.Qg5 Rb2 34.Rgd1 h3 35.Kh2 Rf2 36.Nf2+–) 30...Nf7 (30...Kh7 31.Qc6 Ne6 A) 32.Be5 Be5 33.Qd5 Rc7 34.Rc7 A1) worse is 34...Bc7 35.Qh5 Kg7 36.Qh6 Kf7 37.Ne5 Ke8 38.Rg8 Nf8 39.Qc6 Kd8 40.Qa8 Bb8 41.Qb8; A2) 34...Qc7 35.Qe6 (35.Ne5?! Ng7+=) 35...Qc1 36.Kg2 f3 37.Kh3 Qg1 38.Qf7 (38.Ne5 Qg2 39.Kh4 Qf2 40.Kh5 Qh2 41.Kg5 Qg2 42.Ng4 f2 43.Qf7 Kh8 44.Qf2 Qf2 45.Nf2 Kg7+–) 38...Kh8 39.Qe8 (39.Ne5?! Qg2 40.Kh4 Qh2 41.Kg4 Qe5+/–) 39...Kh7 40.Ne5 Qg2 41.Kh4 Qf2 42.Kg4 Qg1 43.Kf5+–; A3) 34...Nc7 35.Qe5 Qe5 36.Ne5 Rb3=; B) 32.Qa6 Rc7 33.Rc7 Nc7 34.Qc8=) 31.Qc4 Kh8 32.Kg2 Ng5 33.Qb5 e5 draws heavy fire 33...a6 34.Qb7?? (better is 34.Qc5 f3 35.Kf1 Qc5 36.Rc5 Ne4 37.Rc6 Ng3 38.fg3 hg3 39.Bc3=) 34...Qd7 (34...Qe6 35.Be5 Qg4 36.Kf1–+) 35.Ne5 (35.Qd5 Qg4 36.Kf1–+) 35...f3?? (35...Be5 36.Be5 Kh7=) 36.Kf1+– Rc7 (36...Be5 37.Be5 Kh7+–) 37.Qc7 Qb5 38.Qc4 (38.Rc4 Qe8 39.Rc6 Kg8 40.Nf3 Qf7 41.Qc8 Qf8 42.Rg5 Rh1 43.Kg2 Rg1 44.Kg1 Kh7 45.Rg7 Qg7 46.Bg7 Kg7 47.Qd7 Kf8 48.Rc8) 38...Qb2 1–0. Matlakov,M (2695) – Bosiocic,Mari (2555), European Blitz, 2014. (=1.Nf3 f5 2.b4 d6)

3.b5 d5 4.Ne5+= Bd6 5.d4 Be5 6.e3?? (better is 6.de5 Be6 7.e3+/–) 6...Bf6–+ 7.Nc3 Ne7 8.Ba3 0-0 9.Bc5 (9.Qf3 Be6–+) 9...b6 10.Bb4 a5 11.Ba3 Ng6?? 12.Be2? Be7 13.Bb2 Bb4 14.a3 Bc3 15.Bc3 c5 16.a4 c4 17.Bh5 Qf6 18.Bg6 Qg6 19.Qf3 Be6 20.h3 Nd7 21.Bb2 Nf6 22.Ba3 Rf7 23.Bd6 Ne4 24.Be5 Raf8 25.0-0 h6 26.Rfb1? Qh7 27.Bh2? g5 28.Rb2 f4 29.ef4 gf4 30.c3 Kh8 31.Qh5 Rf5 32.Qf3 Qg6 33.Re2 Kh7 34.Ra3 Rg8 35.Bf4 Ng5 36.Qg3 Rf4! 37.Re6 Ne6 38.Qg6 (38.Qg6 Rg6 39.Kf1–+). huno – bosyk, kurnik, 2012. (=1.Nf3 f5 2.b4 e5)

3.b5 e4!? 4.Nd4 d5=.

3.Ne5+= Nc6 4.Bb2 d5 (4...Nf6 5.a3+=) 5.e3+/– Be6? (better is 5...Ne5 6.Be5 Nf6+/–) 6.Bb5+– Qd6 7.Qh5 Ke7 (7...Kd8 8.Bc6 Nf6 9.Qe2 bc6 10.Qa6+–) 8.Qh4 (8.Qg5 Nf6 9.Bc6 bc6+–) 8...Nf6 9.Bc6 Qc6?? (9...bc6 10.Bd4 Ke8+–) 10.Nc6 Kd6 (10...bc6 11.Bf6 gf6+–) 11.Nd4 a6 12.Nc3 (better is 12.Qg3 Kd7 13.Ne6 Ke6 14.Qe5 Kf7 15.Qc7 Be7 16.Bf6 gf6+–) 12...a5 13.Ncb5 Kd7 14.Ne6 Ra6 15.Nec7 a4 16.Qf4 a3 17.Qf5 (17.Qf5 Kd8 18.Bf6 Rf6 19.Qe5+–) 1–0. pierre – cwbw, internet, 2010.

4.e4 fe4? 5.Qh5 g6 6.Ng6 hg6 7.Qh8 +–.

4.e4 Nf6 5.Bc4 Ne4? 6.Qh5 Ke7 7.Qf7 Kd6 8.Qf5 +–.

4.e4 Nf6 5.Bc4 Qe7+= 6.Bb2 d6 7.Nd3 Ba5 8.e5 d5? (better is 8...Nc6!? 9.Qe2 de5 10.Ne5 Ne5 11.Be5 Ne4=) 9.0-0+/– Ng4 10.Bd5 Qh4 11.h3 Nh6 12.Qf3 c6 13.Bb3 g5 14.Nc3 g4 15.Qf4 Bd8 16.Qg3 gh3? (16...Qg3 17.fg3 Na6 18.e6+–) 17.gh3 (better is 17.Qg7!? Rf8 18.Ba3 Be7 19.Be7 Qe7 20.Qh6 hg2 21.Kg2 b5+–) 17...Nf7 (17...Qe7 18.Nf4+–) 18.Ne2 (better is 18.e6 Nh6 19.Nb5+–) 18...Qh6?? (better is 18...Ng5 19.Ndf4 Qh6+/–) 19.e6 Be6 20.Be6 Bh4 (20...Qe6 21.Nef4 Qh6 22.Bh8 Nh8 23.Qg8 Kd7 24.Qh8 Bf6 25.Ne5 Be5 26.Qe5 Qf8+–) 21.Bf7 Kf7 22.Qc7 (22.Qc7 Be7 23.Bh8+–; 22.Bh8?! Bg3 23.fg3 Qh3+–) 1–0. Senechaud,Danny – Lagunov,Anatoly Viktorovich, WK1 Latvian gam corr9498, 1994. (=1.e4 e5 2.Nf3 f5 3.b4 Bb4 4.Ne5)

4.e4 Nf6 5.Bc4 Qe7+= 6.Bb2 d6 7.Nd3 Qe4 8.Qe2 Ba5 9.Nc3 Qe2 10.Ne2 Nbd7 11.Nef4 Nb6 12.Bb3 Rf8 13.h4 (13.0-0-0 c5 14.Rhe1 Kd8 15.Ne6 Be6 16.Be6 c4=) 13...c5–/+ 14.Bf6 Rf6 15.Nh5 (better is 15.Nd5!? Nd5 16.Bd5–/+) 15...Rh6–+ 16.Ndf4 c4 17.Ng7 Kf8 18.Ngh5 d5 (18...cb3?! 19.ab3 (19.cb3? Be6–+) 19...Bb4 20.c3=) 19.c3 d4 (worse is 19...cb3 20.ab3 Bc3 21.dc3+=) 20.Bc2 dc3 21.d4 Bd7 (21...cd3 22.Bd3 Na4 23.Bc2–+) 22.Ng3 Re8 23.Nge2 Nc8 24.a4 Nd6 25.f3 b6 26.Kf2 Be6 27.h5 Kg8 28.d5 Bd7 29.Nd4 Bb4 30.Nfe6 Be6 31.Ne6 Rc8 (31...Rhe6!? 32.de6 Bc5 33.Kg3 Be3+=) 32.Ke3 Kh8 (32...Kf7!?=) 33.Rae1 Rg8 34.Kf2 (34.Re2 Re8 35.Kf4 Kg8+=) 34...Rf6 35.g3 a6 36.Ra1 Rf7 37.Rh4 b5 38.ab5 ab5 39.Ra6 Nc8 40.Rh1 (40.Rd4 Rf6 41.Kg2 Rh6 42.Bf5 Rh5+=) 40...Be7 (40...Bd6 41.Rb1 Bg3 42.Ke3–/+) 41.Nf4 Bc5 42.Kg2 Bd6 43.Ng6 Kg7 44.Nh4 ½–½. Senechaud,Danny – Schreyer, GAMBIT REVUE, 1990. (=1.e4 e5 2.Nf3 f5 3.b4 Bb4 4.Ne5)

4.e4 Nf6 5.ef5!? d5 6.Bb5 c6 7.Bd3=.

5.Bb2 fe4 6.Qh5 Kf8 7.a3+=.

6.ef5? d6 –+.

7.Kd1 Nf6 8.Qh4 Qh4 9.Nh4 Ne4 10.Ke2 0-0 11.d3 Nc3 12.Nc3 Bc3 13.Rb1 Re8 14.Kf3 d6 15.Kf4=+.

7.Be2 Nf6 8.Qg5 (8.Qh3+= –0.62) 8...Rg8 (8...hg6? 9.Qg6 (9.Qf6?! Rg8=) 9...Ke7 10.Qg7 Ke6 11.Qh8 Qg2 12.Rf1+– (12.Qc8 Qh1 13.Bf1 Qe4 14.Kd1 Qf3 15.Ke1 Bc5–/+); 8...Qc2?? 9.Na3 (9.Nh8 Qc1 10.Bd1 Qb2 11.Bh5 Kf8 12.Qh6 Kg8=) 9...Qe4 10.Nh8+– (10.Qf6?! Rg8 11.Ne5 Rf8+–)) 9.Qf6 hg6 10.Ba3 Qg2 11.Qe5 Kd8 12.Qf6 Ke8 13.Rf1 (13.Qe5!? Kd8 14.Qf6 Ke8 15.Qe5 Kd8=) 13…Nc6 ½–½. Senechaud – Clarke, corr, 1990. (=1.e4 e5 2.Nf3 f5 3.b4 Bb4 4.Ne5 Qe7 5.Qh5 g6)

3.a3 a5 4.b5 b6 5.c4 Bb7 6.g3 Nf6 7.Bg2 Be7 8.0-0 0-0 9.d3 d6 10.Nc3 Qc8 11.e4 (11.Bg5 h6 12.Bf4 e5=) 11...fe4= 12.Ng5 h6 13.Nge4 Ne4 14.Ne4 Nd7 15.Bh3 Nc5 16.Nc5 dc5 17.Bf4 Bf6 18.Re1 The isolani on e6 becomes a target 18...Qd8 19.Rc1 (19.Be6 Kh7 20.Ra2 Bc3+=) 19...e5 (19...Bb2 20.Be6 (worse is 20.Re6 Bc1 21.Bc1 Qd4+=) 20...Kh7 21.Rc2 Ba3 22.Qg4=) 20.Be5+= Be5 21.Re5 Qd4 Threatening mate: Qxf2 22.Re3 Rae8 23.Qd2 Bf3 24.Re8 Re8 25.Re1 Re5 26.Re3 Qa1 27.Bf1 Re3 28.Qe3 Bb7 29.Qe6 Kh8 30.Qf7 Qd1 31.h3 Kh7 32.g4 Bf3 33.Qf5 Kh8 34.Kh2 c6 35.bc6 Bc6 36.Bg2 Bg2 37.Kg2 Qb3 38.h4 White prepares g5 38...Qa4 39.g5+– Qc6 40.Qe4 Qd6 41.f4 Qd7 42.Kg3 hg5 43.hg5 Kg8 44.Qd5?? Qd5–/+ 45.cd5 b5 46.f5 (46.f5 b4 47.d6+–) 1–0. Woelfelschneider,Peter – Baeumer, 2010.

3.a3 d5 4.e3 Nf6 5.d4 c6 6.Bd3 Bd6 7.0-0 0-0 8.c4 Ne4 9.Nbd2 Nd7 10.Bb2 Ndf6 11.Rc1 Nd2 12.Qd2 Ne4 13.Qc2 Rf6 (13...a5 14.c5 Bc7 15.Ne5+=) 14.Ne5 Rh6 15.f3 Qh4 16.g4 (16.h3 Qg3 17.Kh1 Rh4+=) 16...Ng5 17.Qe2 Be5 18.de5 a5 19.Bc3 ab4 20.ab4 Ra3 21.Be1 Qh3 22.Bg3 Bd7 23.gf5 ef5 (23...dc4!? 24.Rc4 ef5+=) 24.cd5+- cd5 25.Rc7 Be6 26.f4 Ne4? (26...Rg6 27.fg5 Rg5 A) 28.Rb7?! Rd3 29.Ra1 Rc3= (29...Rg3 30.hg3 Qg3 31.Qg2 Qe3 32.Kh1 Qh6 33.Qh2 Qh2 34.Kh2+-); B) 28.Re7 Rd3 29.Ra1 Rg3 30.hg3 Qg3 31.Qg2 Qe3 32.Kh1 Qh6 33.Qh2+=) 27.Be4 fe4? (better is 27...de4 28.Qb5 Ra8 29.Qb7 Rd8 30.Rg7 Kh8+-) 28.Qb5 Qh5 (28...Ra8 29.Qb7 Rf8 30.Rg7 Kh8+-) 29.Qb7 Bf7 (29...Qf5 30.Rg7 Kh8+-) 30.Rc8 Be8 31.Qe7 (31.Qe7 Re6 32.Qe6 Kf8 33.f5 Qf7 34.Qd6 Kg8 35.e6 Qh5 36.Qe7 h6 37.Re8 Qe8 38.Qe8 Kh7 39.e7 Ra6 40.Qc8 Ra8 41.Qa8 h5 42.e8Q d4 43.Qh5) 1-0. chriscooperden (2135) - valenok37g (2000), gameknot.com, 2017.

3.a3 Qf6 4.d4+= Nc6 5.b5 Na5 6.Bg5 Qg6 7.Qd3 Be7 (7...d5 8.Nbd2+=) 8.Bf4 Nf6 9.Bc7 b6 10.Ne5 Qh6 11.Nc3 0-0 12.d5 d6 13.Nc4 Nc4 14.Qc4 e5 (14...ed5 15.Nd5 Nd5 16.Qd5 Be6–+) 15.Rd1 (better is 15.a4=) 15...Bb7–+ 16.h3 (16.f4 Rac8 (< 16...ef4 17.Rd4–+) 17.fe5 Ng4–+) 16...Rfc8 17.Na2 Bd8 18.Nb4 Bc7 19.Nc6 Bd8 20.Qb4 (20.e3 Qg6–+) 20...Ne8 (20...Ne4!? 21.g3–+) 21.c3 a6 22.ba6 Ra6 23.e4 fe4?? (better is 23...Raa8 24.ef5 Qg5–+) 24.Nd8+= Rd8 25.Ba6 Ba6 26.Qb6 Ra8 27.Qc6= Rc8 28.Qa6+– Rc3 29.Qa5 Rc8 30.0-0 Qf6 31.Qb4 Nc7 32.Rc1 Kf7 33.Rc6 Nd5 34.Qb7 Qe7 35.Qc8 e3 36.fe3 Kg6 37.Rd1 Ne3 38.Rdd6 Kh5 39.Qa6 g6 40.Qd3 Qg5 41.g4 (41...Ng4 42.hg4 Qg4 43.Kh2 Qh4 44.Qh3+–) 1–0. orane – rumrunner, internet, 2003.

3.a3 g5 4.Bb2+/– Nf6 5.Ng5 Bh6 6.h4 Rg8 7.Nf3 (7.e4 Bg5 8.hg5 Rg5+–) 7...Ng4 8.e3 f4? (8...d6 9.d4+/–) 9.Be2 (better is 9.Ng5!? Rg5 10.hg5 Qg5 11.ef4 Qf4 12.Qf3+–) 9...fe3+/– 10.de3 Bg7 11.Bg7 Rg7 12.Ng5 Qf6 13.Bg4 (better is 13.Qd4!? Nc6 14.Qf6 Nf6 15.b5+/–) 13...Qa1= 14.Bh5 Ke7 15.0-0 h6 16.Nf3 Rg8 (16...Qf6 17.Qd4+=) 17.Qd4 (17.c3 Qb2 18.Qd3+–) 17...Qa2?? (better is 17...Qd4 18.ed4 d6+=) 18.c4 (better is 18.Nc3 Qb2 19.Nd5 ed5 20.Qb2+–) 18...Nc6 (better is 18...Qc2!? 19.Qc5 Kd8+/–) 19.Qf4 Qb2?? 20.Qf7 Kd6 21.Qg8 Ne7 22.Qg3 Kc6 23.Nd4 Kb6 24.c5 Ka6 25.Be2 b5 26.Bb5 Kb7 27.Qf3 d5 28.cd6 Nd5 29.Bc6 Kb8 30.Ba8 Ka8 31.Ne6! Be6 32.dc7 Kb7 33.e4 Nb6 34.Qc3 Qe2 35.Rc1 Nc4 36.c8Q! Kc8 37.Nd2 Kd8 38.Nc4 Bc4 39.Qc4 Qc4 40.Rc4 Ke7 41.Rc6 Kd7 42.Rh6 Ke7 43.e5 Kf7 44.f4 (44.f4 Ke7 45.h5 Kf8 46.Rf6 Ke8 47.h6 a6 48.h7 Ke7 49.h8Q a5 50.Qg7 Ke8 51.Rf8) 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013. (=1.Nf3 e6 2.a3 f5 3.b4 g5)

3.Bb2 Bb4?? 4.Bg7 Nc6 5.Bh8 +–.

3.b5 d5 4.Bb2 Bd7 5.e3 Bc8 6.c4 Bd7 7.Be2 dc4 8.Bc4 c6 9.a4 a6 10.0-0 cb5 11.ab5 Ne7 12.ba6 Qb6 13.Qc2 Ng6 14.ab7 Ra1 15.Ba1 Qb7 16.d4 Qc6 17.Nbd2 Bd6 18.Rb1 0-0 19.Ng5 Be7? 20.Ngf3?? Rc8?? 21.Qb3 Bf8? 22.Ng5 Be7 23.Ne6 Qc4 24.Nc4 Be6 25.Qb8 Rb8 26.Rb8 Nf8 27.Ne5 Bf6 28.Bc3 g5 29.Bb4 Bg7 30.Nc6 Kf7 31.Bf8 Bf8 32.Ne5 Kg7 33.Rb7 Kh8 34.Rb8 Kg7 35.Rb7 Kh8 36.Ra7 Bd6 37.Ra6 Be5 38.Re6 Bc7 39.Rf6 f4 40.e4 Kg7 41.Rc6 Bb8 42.e5 h5 43.e6 Kf6 44.d5 Ba7 45.Ra6 Bc5 46.Rc6 Bd4?? 47.Rc7+– g4 48.e7 Kf7 49.d6 g3 50.hg3 fg3 51.Kf1 Bf6 52.fg3 h4 53.gh4 Bh4 54.Rc8 Be7 55.de7 Ke7 56.Rc4 Kd6 57.Rf4 Ke6 58.Rf3 Kd5 59.g4 Ke4 60.Kf2 Kd4 61.g5 Ke4 62.g6 Kd4 63.g7 Ke5 64.g8Q Ke4 1–0. Bonetti,Shane – MacChess 5.0, 2000.

3.b5 Nf6 4.c4 b6 5.e3 Bb7 6.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.b5 b6 5.e3 Bb7 6.Nf3).

3.d4 Nf6 4.a3 d5 5.Nc3 Bd6 6.h3 (6.Nb5 0-0=) 6...0-0 7.e3 Nbd7 8.Be2 c6 9.0-0 Ne4 10.Ne4 fe4 11.Nd2 e5 12.Bb2 ed4 13.Bd4 Ne5 14.c4 Nd3 (14...Qg5 15.Kh1+=) 15.c5 (15.cd5 cd5 16.Qb3 Rf7+/–) 15...Bc7 (15...Qg5 16.f4 (16.cd6? Bh3 17.g4 Bf1 18.Qf1 Rf2 19.Qf2 Nf2 20.Kf2 Qh6–+) 16...Nf4 17.ef4 (worse is 17.Rf4 Bh3 18.Rg4 Bg4 19.cd6 Be2 20.Qe2 Rfd8–+) 17...Bf4 18.Rf4 Qf4 19.Nf1+=) 16.Bd3 (16.Qb3!? Nf2 17.Rf2 Bh2 18.Kh2 Rf2 19.Rf1 Re2 20.Qd1 Rd2 21.Qd2+=) 16...ed3= 17.Nf3 Bf5 18.Ne1 (18.Be5 Be5 19.Ne5 Qg5=) 18...Qg5 19.Nf3 Qg6 (better is 19...Qe7!?+=) 20.Nh4+= Qg5 (20...Qg5 21.Nf5 Qf5+=). pillsbury (2140) – tche (2345), net–chess.com, 2016.

4.Bb2 Bf6 5.d4 Ne7 6.Nbd2 d5 7.c4 a5 8.e3 0-0 9.Bd3 c6 (9...ab4 10.ab4 Ra1 11.Qa1 dc4 12.Bc4=) 10.0-0 b6 11.Qe2 Bb7 12.Bc3 ab4 13.ab4 Nd7 14.Ra8 Qa8 15.Ra1 Qb8 16.Nf1 (16.Nb3 c5+=) 16...c5 17.bc5 bc5 18.Ng3 g6 19.Qb2 (19.Rc1 Ba6+=) 19...Bc6 (19...dc4 20.Bc4 Bd5 21.Qe2=) 20.Qd2 dc4 21.Bc4 Nd5 22.Ne2 Kg7 23.Bd5 Bd5 24.Nf4 c4 25.Nd5 ed5 26.Ra5 Qb1 27.Ne1 Nb6 28.h3 (28.Bb4 Rc8+=) 28...Ra8=+ 29.Ra8 Na8 30.Qc2 (30.Kh2 Be7=+) 30...Qc2 31.Nc2 Nc7 32.Ba5 Nb5 33.Nb4 Nc3 34.Kf1 Kf7 35.Nc6 Ne4 36.f3 Nd6 37.Ke2 Ke6 38.g4 (38.Be1 g5=+) 38...h5 (38...fg4!? 39.fg4 Ne4-/+) 39.gh5=+ gh5 40.Bb4 Nb5 (40...Nf7 41.f4=+) 41.Na5 (41.Bc5 Bh4=+) 41...f4 42.Bc5 (42.ef4 Nd4 Deflection) 42...Bg5 (42...Kd7 43.Nb7-/+) 43.e4=+ Nc3 44.Kd2 Ne4 (44...Na4!?=+) 45.fe4+= f3 46.Ke1 de4 (46...Bd8 47.Nc4 Bh4 48.Kd2 dc4 49.d5 Kd7 50.e5=) 47.Nc4+= e3? (better 47...Kd5 48.Nb6 Kc6=) 48.Ne3!+- Be3 49.d5! Kd5 50.Be3 Ke4 51.Kf2 h4 (51...Kf5 52.Kf3 h4 53.Bf2+-) 52.Bg5 Kf5 53.Bh4 Kg6 1-0. Gharibyan,Mamikon (2430) - Pruijssers,R (2560), Titled Tuesday, 2020. (=1.Nf3 f5 2.b4)

4.Nc3 Nf6 5.Bb2 0-0 6.e3 b6 7.Be2 Bb7 8.0-0 c5 9.bc5 bc5 10.Rb1 Nc6 11.d4 d5 12.dc5 Bc5 13.Na4 Bb6 14.c4 Ba6 15.c5 Be2 16.Qe2 Bc7 (17.Qa6 Qe8=). Hrdy – Nielsen, corr ICCF TT–4–90, 1990.

4.e3 b6 5.Bd3 Bf6 6.Nc3 Bb7 7.0-0 Ne7 8.Bb2 g5 (8...a6 9.Re1=) 9.Nd4 h5 (9...0-0 10.Nde2+=) 10.Ncb5 Kf7 11.f4 (11.h3 g4 12.h4 a6=+) 11...g4= 12.Qe2 (12.Re1 a6 13.Nc3 h4=) 12...a6 13.Nc3 d5 (13...h4 14.b5=) 14.Nb3 (14.Qf2 c5 15.bc5 bc5 16.Ne6 Ke6-+) 14...Nd7 15.Na4 h4 16.Rab1 Rb8 (16...h3 17.g3=) 17.Bf6 (17.Ba6? Ba6 18.Qa6 Ra8-+) 17...Nf6 18.Nc3 (18.Ba6? Ba6 19.Qa6 Ra8-+) 18...Qc8 19.Rb2 Nh5 20.Rfb1 (20.Rf2 c5 21.bc5 bc5-+) 20...h3=+ 21.Nd4 White plans b5 21...hg2 22.Qg2 Ng6 23.Qf2 Nf6 24.b5 (24.Rb3 Nh4 25.Be2 Ne4 26.Ne4 de4-+) 24...ab5-/+ 25.Be2 (25.Ncb5 Qd7 26.Nc3 Nh4-+) 25...c6 (25...Rh5 A) 26.Bb5? c5 27.Nf5 ef5-+ (27...Rf5 28.Bd3 d4 29.Bf5 ef5 30.Ne2-+); B) 26.Ndb5 Qd7 27.Nd4-+) 26.a4 Qc7 27.d3 (better is 27.ab5!? c5 28.Nc6-+) 27…Rh7 0-1. chriscooperden (2060) - rabscuttle (2315), gameknot.com, 2017.

4.e3 Nf6 5.d4 0-0=.

4.e3 Nf6 5.Be2 0-0 6.d4=.

4.g3 Nf6 5.Bg2 a5 6.b5 c6 7.Nc3 Ne4=.

4.g3 Nf6 5.Bg2 a5 6.b5 d5 7.d4=.

5.Bb2 0-0 6.e3 d6 Covers e5 (6...b6 7.Bd3=) 7.Bc4 Ne4 8.Nbd2 d5 9.Be2 Nd7 10.0-0 Ndf6 (10...Nb6 11.Re1=) 11.Ne5 The white knight is well posted. 11...Nd2 12.Qd2 Ne4 Black threatens to win material: Ne4xd2 13.Qd3 (13.Qc1 Bd7=) 13...Bf6 14.Rad1 (14.f3 Ng5+=) 14...Nd6 15.Qb3 b5 16.a4 a6 17.ab5 ab5 18.Ra1 Ra1 19.Ra1 Nc4 20.Bc3 Qe8 21.Ra7 Be5 22.de5 White has the pair of bishops 22...Qc6 23.g3 Bb7 24.Bd4 Ra8 25.Qa2 h6 26.Ra8+/– Ba8 27.Bh5 Bb7 28.Qa7 Bc8 29.Bg6 Nd2 30.Qb8 Qb7 31.Qb7 White has a mate threat 31...Bb7 A minor pieces endgame occured 32.Kg2 Bc6 33.f3 Prevents intrusion on e4 33...Nc4 The black knight on an outpost 34.h3 Bd7 35.g4 fg4 36.hg4 Kf8 37.Kg3 Ke7 38.Bc5 Kd8 39.f4 Be8 Black threatens to win material: Be8xg6 40.Bd3 g6 Secures f5 41.Kf2 Bf7 42.Bf8 h5 43.gh5 gh5 Black has a new passed pawn: h5. 44.Bc5 Here comes the goal–getter 44...Nd2 45.Bb5 Ne4 Menacing 46.Kg2 Bg6 47.Bf8 Bf5 48.Be2 White threatens to win material: Be2xh5 48...Ke8 49.Bh6 Bg4 Black threatens to win material: Bg4xe2 50.Bb5 Kf7 51.Bd3 Bf5 52.Bg5 c6 Consolidates b5 53.Bh4 Ke8 54.Be1 Kd7 55.Kh2 Kc7 56.Bf1 Kd7 57.c4 dc4 58.Bc4 Kc7 59.Be2 Bg4 60.Bd3 Bf3 61.Bh4 Kd7 62.b5 Kc7 63.bc6+/– Kc6 ½–½. Blanco Perez,David (2180) – Ramos Suria,Felix (2170), Dos Hermanas FM Elo, 2001. (=1.d4 f5 2.Nf3 Nf6 3.b4 e6 4.a3 Be7)

5.c4 0-0 6.e3 Qe8 7.Bb2 Nc6 8.d5 Nd8 9.Nc3 d6 10.Rc1 a6 11.de6 c6 12.Bd3 Be6 13.Ne2 Nd7 14.Qc2 Bf6 15.Nfd4 g6 16.Nf4 Ne5 17.Be2 Bf7 18.0-0 Ne6 19.Rfd1 Qe7 20.a4 Rfc8 21.Qb1 Nf4 22.ef4 Nd7 23.Bf3 Nb6 24.Re1 Qd8 25.Ne6 Be6 26.Re6 Bb2 27.Qb2 Qd7 28.Qf6 Rf8 29.Qe7 Qe7 30.Re7 Rf7 31.Re6 Na4 32.Rd6 Nb6 33.b5!+/– ab5 34.cb5 Nc8 35.Rd8 Rf8 36.Rd7 Rf7 37.Rf7 Kf7 38.bc6 bc6 39.Bc6 Ra7 40.Bd5 Kf6 41.g4 Ne7 42.g5 Kg7 43.Bb3 Rb7 44.Rc3 Rb4 45.Bc4 Nc8 46.f3 Ne7 47.Kg2 Rb2 48.Kg3 Rd2 49.Re3 Rd7 50.Ra3 Rc7 51.Be6 Rc6 52.Ba2 Rc7 53.Ra8 Rd7 54.Re8 Ra7 55.Be6 Rb7 56.Kf2 h5 57.h4 Rc7 58.Ke3 Nc6 59.Kd3 Na7 60.Rb8 Nc6 61.Rg8 Kh7 62.Re8 Kg7 63.Ke3 Ra7 64.Bd5 Nb4 65.Bc4 Rc7 66.Be6 Nc2 67.Kd3 Ne1= 68.Ke2 (68.Ke2 Ng2 69.Bb3=) 1–0. Slobodjan,Roman (2520) – Bocksberger,Stefan (2315), Bayern–chI Bank Hofmann 6th, 2002. (=1.d4 f5 2.Nf3 Nf6 3.b4 e6 4.a3 Be7)

7.b5 c5 8.0-0=.

9.0-0 c5 10.dc5 Bc5 11.Bb2=.

5.b5 d6 6.d4=.

6.d4 b6=.

7.0-0 d5 8.d4=.

8.Nc3 d5=.

4.d3 a6 5.c4 c6 (5...Be7 6.Bf4=) 6.Bb2 d5 7.c5 Nbd7 (7...a5 8.Qa4=) 8.Nbd2 h6 (8...a5 9.e4=) 9.g3 (9.e3 b6 10.Nd4 Nb8 11.cb6 Qb6+=) 9...g5 (9...a5 10.e3=) 10.Bg2+= Bg7 11.Rb1 Qe7 12.0-0 (12.Ne5 Ne5 13.Be5 Bd7+=) 12...e5= 13.Re1 e4 (13...0-0 14.Nb3=) 14.de4 fe4 15.Nd4 (15.Nf1=) 15...0-0 (better 15...e3!? 16.Nf5 ed2 17.Qd2 Qf8+=) 16.Nf5 Qf7 (16...Qe6 17.Ng7 Kg7 18.f3+/-) 17.Ng7 Kg7 18.e3 (18.f3 ef3 19.ef3 Nb8+/-) 18...Kg8 19.f4 gf4 20.ef4 b6 (20...Re8 21.Qb3+=) 21.Nb3 (21.cb6!? Nb6 22.Qc2+/-) 21...bc5+= 22.Nc5 Nc5 23.bc5 Bg4 (23...Rb8 24.Qa4 Rb5 25.Bf1 Rc5 26.Bd4+= (worse 26.Ba6 Qa7 27.Bd4 Ba6=+)) 24.Qd2 (24.Qa4 Bd7+/-) 24...Qe6 25.Be5 Rf7 26.Rb6 (better 26.Bd4+=) 26...Bh3?? (better 26...Nd7-/+) 27.Bh3+- Qh3 28.Rc6 Ng4 29.Re6?? (29.Rg6 Kh7 30.Rg4 Qg4 31.Qd5 Raf8+-) 29...h5?? (better 29...Nh2 30.Rg6 Kh7 31.Rh6 Qh6 32.Qh2 Rc8 33.Qh6 Kh6=+) 30.Qg2 (better 30.Rg6!? Kh7 31.Rd6+-) 30...Qg2 31.Kg2 Ne5 32.Re5 (32.fe5?! Rf5 33.Rf1 Rf1 34.Kf1 Rc8+-) 32...h4 (32...Rd8 33.Rd1 Rb7 34.Red5 Rd5 35.Rd5 Rb2 36.Kh3+-) 33.Rd5 hg3 34.hg3 Re7 35.c6 (35.g4 Rb8 36.Re3 Rb2 37.Kg3 Rb1+-) 35...Rc8 36.Rd7 (36.Rd6 Rec7+-) 36...Rd7 37.cd7 Rd8 (37...Rc2 38.Kh3 Rd2+-) 38.Rd1 Kf7 39.Kf2 Ke7 40.Ke3 (40.Ke3 Kf6 41.g4+-) 1-0. hersil (1790) - 1rg1dr (1730), Rated Classical game, lichess.org, 2014.

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

4.e3 d5 5.d4 Be7 (5...Bd6 6.c4=) 6.c4 0-0 7.Be2 Nbd7 8.0-0 dc4 9.Bc4 Nd5 10.Bd2 c6 11.Nc3 N7f6 (11...N7b6 12.Bd3+=) 12.Qb3 White intends b5 12...Bd6 13.b5 Bd7 14.a4 a6 (14...Rc8 15.Rfc1+=) 15.ba6 ba6 16.a5 Qc7 17.h3 Rab8 18.Qc2 h6 (18...Rf7 19.Ng5 (19.Ba6? Nb4 20.Qb3 Na6–+) 19...Re7 20.Qd3+/– (20.Ba6? Nb4 21.Qb3 Na6–+)) 19.Rfc1+/– (19.Ba6? Nb4 20.Qa4 Na6–+) 19...Bc8 20.Qd3 (20.Nd5 Nd5 21.Bd5 ed5 22.Qc6 Qc6 23.Rc6 Rd8+/–) 20...Qf7 (20...Qa7 21.Rab1+/–) 21.Nd5 (21.Ba6? Nb4 22.Qf1 Ba6–+) 21...cd5 22.Ba6 Ba6 23.Qa6 Ne4 24.Rc6 Ra8 25.Qe2 Qb7 (25...Rfb8 26.Qd3+/–) 26.Rac1 Nd2 (26...Rfc8 27.Rc8 Rc8 28.Rc8 Qc8 29.Qb5+/–) 27.Nd2 Ba3 28.Rb6 Qf7 (28...Qd7 29.Rcc6 Rfc8 30.Rc8 Qc8 31.Nb3+–) 29.Rcc6 Ra5 30.g3 (30.Re6 Bb4 31.Nf3 Ra1 32.Kh2 Qc7 33.Ne5 Qc1+–) 30...Rfa8 (30...Re8 31.Nf3+/–) 31.Re6 (31.Nb3 Ra4 32.Re6 Rb4+/–) 31...Bf8 (31...Bb4 32.Nf3+/–) 32.Nf3 (32.Qf3 Ra2 33.Nb1 Rb2+/–) 32...Ra2 (32...Qh5 33.Kg2+/–) 33.Qb5 f4 (33...R2a5 34.Qc6+–) 34.gf4 (34.Ne5!? Qh5 35.Qd5 Qd1 36.Kg2 Rf2 37.Kf2 fe3 38.Ke3 Ra3 39.Nd3 Qd3 40.Kf2 Qg3 41.Ke2 Qd3 42.Kf2 Kh8–+) 34...Qf5+/– 35.Kg2 Qc2 36.Qf1 Ra1 37.Rec6 Qe4 38.Rc1 (38.Qe2 R1a2 39.Rb2 Rb2 40.Qb2 Ra3+–) 38...R1a2 39.Kg3 Be7 40.Rcc6 Bd8 41.Re6 (41.Rb7 Qe8 42.Ne5 R8a7 43.Ra7 Ra7+–) 41...Qf5 42.Qb1 Qb1 (better is 42...Qf7 43.Rbd6 Ra1+–) 43.Rb1 Kf8 (43...Bf6 44.Rd6 R2a5 45.Rb7+–) 44.Rb7 R2a7 (44...Bf6 45.Rd7+–) 45.Ra7 Ra7 46.Rd6 Bf6 (46...Ke8 47.Rd5 Bc7 48.e4+–) 47.Rd5 Ke7 (47...Ra3 48.e4+–) 48.e4 1–0. Cirulis,Ilmars (1905) – Pareschi,Remo (1955), FICGS, 2016.

4.e3 Be7 5.Be2=.

4.h3 d5 5.d3 Be7 6.Bb2 Bd7 7.e3 0-0 8.Be2 Be8 9.0-0 c6 10.Nd4 Qd6 11.Nb3 Nbd7 12.c4. pillsbury (2140) – jelquez (2275), net–chess.com, 2016.

4.a3 Be7=.

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

4.d3 b6 5.Bg5 Be7 6.e4 fe4 7.Bf6 Bf6 8.de4 Bb7 9.e5 Be7 10.Bd3 0-0 11.Qc2 h6 12.Bh7 Kh8 13.Be4 Be4 14.Qe4 Nc6 15.b5 Na5 16.Nbd2 d5 17.ed6 Bd6 18.0-0 Qf6 19.Rfe1 Rae8 20.c4 Bb4 21.Rad1 Qf5 22.Qe2 e5 23.Rb1 Bd6 24.Ne4 Qf7 25.Rbc1 Bb4 26.Red1 Nb7 27.a3 Ba3 28.Ra1 Qe7 29.Rd5 Bd6 30.Ra7 Rb8 31.Qe3 Qe6 32.Nd6 Nd6 33.Qe5 Qe5 34.Ne5 Rfe8 35.Rc7+– Rbd8 36.f3 Nf5 37.Rd8 (37...Rd8 38.Nf7 Kg8 39.Nd8+–) 1–0. Trkn – guest5052, ICC, 2004.

4.d4 b6 5.e3 Bb7 6.Be2=.

4.d4 b6 5.e3 Be7 6.Bd3+= Bb7 7.0-0 0-0 8.Na3 (8.Ne5 d6 9.Nf3 c5=) 8...a6 (8...Ne4 9.Nb5=) 9.Bb2 (9.Nc4 Ne4 10.Qc2 Bd5=) 9...Qe8 10.Qe2 (10.Ne5 d6 11.Nf3 Nc6=) 10...Qh5 (10...Qg6 11.Nc4=) 11.Ne5 Qh6 (11...Qe2 12.Be2 d6 13.Bf3=+) 12.Nac4 d6 13.Nf3 Nbd7 (13...b5 14.Na5 Bd5 15.c4 bc4 16.Bc4 Bc4 17.Nc4=+) 14.a4 g5 (14...a5 15.ba5 d5 16.Nce5 Ra5 17.Ba3=) 15.Rfc1 Be4 16.Ne1 (16.a5 b5 17.Ncd2 Bd3 18.Qd3 g4=) 16...d5 17.Ne5 (17.Nd2 Bd6 18.Nef3 Bd3 19.Qd3 a5=+) 17...Ne5 18.de5 Ng4 19.h3 Ne5 20.Be4 (20.Ba6 g4 21.Bb7–/+) 20...fe4–+ 21.c4 Nc4 22.Rc4 dc4 23.Qc4 Qg6 24.Qc7 Bb4 25.Qb6 Be7 26.Be5 Qf5 27.f4 gf4 28.ef4 Rfc8 29.Kh1 Rc4 30.Rd1 Qf7 31.Qb7 Rd8 32.Rd8= Bd8 33.Qb3 Rc6 34.Qb4 Bh4 35.Kh2 Qa7 36.Bb2?? Qb6 37.Qb6 Rb6 38.Bc3 Rb1 39.g3 Bg3 40.Kg3 Rb3 41.h4 Rc3 42.Kf2 Ra3 43.a5 Ra5 44.Ke3 Ra1 45.Nc2 Rh1 (46.Nb4 a5–+ (46...Rh4?! 47.Na6 Rh1 48.Nc5–+)) 0–1. Gross,Gerald – Moeller Nielsen, corr 3GMM–44, 1996.

4.d4 b6 5.Bg5 Bb7+=.

4.d4 Be7 5.Bf4=.

5.e3 d5=.

6.Qa4 d5 7.d4=.

7.Nbd2 b6 8.d4=+.

7.e4 c6 8.bc6 b5 9.Qc2 Nc6=.

7.e4 fe4 8.de4 d5 9.Nbd2=+.

6.b5 c6 7.Qa4 d5=.

3.a3 d5 4.e3 e6 5.d4 Bd6 6.c4 0-0 7.c5 Be7 8.Be2 a6 9.Ne5 Nbd7 10.Nd3 c6 11.Nf4 Nb8 (11...Kf7 12.Bb2+=) 12.Bb2 Ne4 (12...Qe8 13.Nd2+/-) 13.f3 Ng5 14.0-0 Rf6 15.a4 White intends b5 15...a5 16.b5 Nd7 17.Nd2 Rh6 18.Nb3 e5 19.de5 Nc5 20.Nd4 Qc7 21.Qc1 Nf7 (21...Qe5? 22.Nc6 Qc7 23.Ne7 Qe7 24.Ba3+-) 22.Ba3 Qe5 23.bc6 bc6 24.g3 g5 25.Bc5 gf4 26.ef4 Qg7 27.Bd3 (worse is 27.Be7 Qd4 28.Kh1 Nd6 29.Qc6 Bb7+/-) 27...Bf6 28.Qe3 Bd7 29.Bf5 Nd6 30.Bd7 (30.Bd6?? Bd4 31.Bh7 Rh7-+) 30...Qd7 31.Rae1 Nb7 32.Ne6 (32.Bb6 Nd6 33.Qd3 Rb8+-) 32...Nc5+/- 33.Nc5 Qd6 (33...Qg7 34.Kg2+/-) 34.Re2+- Kh8 (34...d4 35.Qb3 Qd5 36.Rb1+-) 35.Rc1 Rg8 36.Ne6 Qb4 37.g4 (37.Rc6 Qa4 38.Rc1 Qb5+-) 37...Qa4 38.Kh1 d4 39.Qe4 Re8 40.Rb1 Rg6?? (better is 40...Bg7 41.f5 Qc4+-) 41.g5 Bg7 (41...Bg5 A) worse is 42.fg5 Rge6 (42...Ree6 43.Qf4 Qa1 44.Ra1 Kg7 45.Ra5 Rgf6 46.gf6 Rf6 47.Re7 Kf8 48.Qf6 Kg8 49.Rg5) 43.Qe6 Re6 44.Re6 Qc4=; B) 42.f5 Ree6 43.fe6+-) 42.f5 Rge6 43.fe6 Qc4 44.f4 (better is 44.Reb2!? Qe6 45.Qe6 Re6 46.Rb8 Bf8 47.Rf8 Kg7+-) 44...Bf8 (44...Qd5+-) 45.f5 (45.f5 Qd5 46.Qd5 cd5 47.Rd1+-) 1-0. foogie1 (2270) - chriscooperden (2150), gameknot.com, 2017.

3.a3 g6 4.d4 Bg7 5.Bf4 0-0 (5...d6 6.e3=) 6.e3+= c6 7.Be2 h6 8.0-0 (8.Ne5 g5 9.Bg3 d6=) 8...g5 (8...d6 9.Nbd2+=) 9.Bb8+= Rb8 10.c4 d5 (10...d6 11.Qa4 a6 12.c5+=) 11.Nc3 Be6 12.c5 Bf7 13.Qa4 a6 (13...Ne4 14.Rfc1+=) 14.Ne5 Ne4 15.Ne4 fe4 16.Bg4 Be5 17.de5 Bg6 (17...Qc7 18.e6 Bg6 19.Rad1=) 18.Qd1 Qe8 19.Be6 (19.a4 Bf5+=) 19...Kg7 (19...Bf7 20.Qg4+=) 20.Qg4 b5 (20...Bh5!? 21.Qh3 Rd8+=) 21.Bd7+/– White gets the initiative 21...Qd8 (21...Qf7!? 22.Bc6 e6+/–) 22.Bc6+– Qc7 (22...Bf5 23.Qe2+–) 23.Bd5 Qe5 24.Rad1 Rbd8 (24...Bf5 25.Qe2+–) 25.Bb7 Rd1 26.Qd1 Qe6 27.Qd4 Kh7 28.c6 Qc4 29.Qc4 bc4 30.Ba6 Be8 31.b5 Rf5 32.c7 Bd7 33.b6 Rc5 34.b7 (34.b7 Rc7 35.b8Q+–) 1–0. pozarski (1965) – NN, GameColony.com, 2002.

3.c3 e6 4.d4 d5 5.e3 Bd6 6.Bd3 0-0 7.0-0 Ne4 8.a4 Rf6 9.Ne5 (9.Bb2 Nc6=+) 9...Rh6 10.f3? (better is 10.Nd2=+) 10...Qh4-+ 11.h3?? (better is 11.fe4 Qh2 12.Kf2 fe4 13.Be2-+) 11...Ng5 12.Qc2 (12.Ra2 Qg3 13.Re1 Nh3 14.Kf1 Be5 15.de5-+) 12...Qg3 13.Rd1 (13.Rf2 Nh3 14.Kf1 Nf2 15.Qf2 Rh1 16.Ke2 Qf2 17.Kf2 Rc1-+) 13...Be5 14.de5 Nf3 15.Kf1 Rh3! 16.Qf2 (16.gh3 Qg1 Mate attack) 16...Rh1 17.Ke2 Qf2 18.Kf2 Rd1 19.gf3 Rc1 20.f4 (20.a5 c5! 21.bc5 Nd7-+) 20...a5 21.Kf3 (21.Ke2 Na6 22.Kd2 Rg1-+) 21...Nd7 (better is 21...ab4!? 22.cb4 Nc6 23.Ra3 Nb4 24.Nd2-+) 22.Ra2 ab4 23.cb4 c5 24.bc5 (24.Nd2 cb4 25.Bb5 Nc5-+) 24...Nc5 25.Bc2 Bd7 26.Nc3 (26.a5 Ba4! 27.Ba4 Ra5-+) 26...Ba4! 27.Na4 (27.Ra4 Rf1 Double attack (27...Rc2 Deflection; 27...Rf1 Decoy; 27...Rc2 Overloading); 27.Ba4 Rc3 Pinning (27...Rc3 Deflection); 27.Na4 b5 Passed pawn) 27...b5 28.Ke2 ba4 29.Kd2 Rh1 30.Kc3 Ne4 31.Be4 de4 32.Ra3 (32.Rg2 a3 33.Kd4 a2 34.Kc4 Rc1 35.Kb3 a1Q 36.Rg7 Kg7 37.Kb4 Qb2) 32...Rh2 33.Ra1 (33.Kb4 Rb8 34.Kc5 Rc2 35.Rc3 Rc3 36.Kd4 Rd3 37.Kc5 a3 38.Kc6 a2 39.Kc7 Rb2 40.Kc6 a1Q 41.Kc5 Qc1) 33...Rc8 34.Kb4 Rb2 35.Ka3 Rb3 36.Ka4 Rb7 37.Rb1 (37.Rd1 Ra8) 37…Ra8 0-1. fatguywes (2155) - chriscooperden (2065) , gameknot.com, 2017.

3.Nc3 e6 4.a3 d5=.

3.d3 d6 4.Nbd2 (4.d4 Nbd7=) 4...e5 5.e4 fe4 (5...Be7 6.c3=) 6.de4 Bg4 (6...d5 A) 7.Ne5 Bb4 (7...Ne4? 8.Ne4 Be6 9.Nc5 Bc5 10.bc5+–; 7...de4?! 8.c3=) 8.ed5 Bc3 (worse is 8...Nd5 9.Qh5 Ke7 10.Qf7 Kd6 11.Bb2+/–; 8...Qd5?! 9.Nef3+=) 9.Bb5 Kf8 10.Ba3 Kg8+=; B) 7.c3=) 7.h3 Bh5 8.c3 c6 9.Be2 Be7 10.0-0 0-0 11.Ng5 Be2 12.Qe2 Qd7 13.Rd1 h6 14.Ngf3 Qe6 15.Nh4 d5 16.Ng6 Re8 17.ed5 Nd5 (17...cd5 18.a3=) 18.Ne7+= (18.Ne5? Bd6 (18...Nc3?! 19.Qh5 g6 20.Ng6–/+) 19.Re1 Be5–+) 18...Re7 19.Ne4 Nd7 20.Bd2 (20.c4 Nf4 21.Qc2 Qg6 22.Bf4 ef4=) 20...Rf8 21.a4 N7f6 22.Re1 Qf5 23.Ng3 Qg6 24.c4 Nc7 25.Rad1 Rfe8 26.a5 b5 27.ab6 ab6+= 28.Be3 White gets the initiative 28...b5 29.Bc5 Re6 30.Bd6 The pressure on the isolated pawn grows 30...Nfd5 31.Bc7 Nc7 32.Ne4 bc4 33.Qc4 Nd5 34.Nc5 Nf4 35.g3 Nh3 36.Kg2 Nf4 37.Kf1 Nd5 38.Ne6 Qe6 39.Rc1 Rc8 40.b5+– c5 41.Kg2 g5 42.Kg1 Kg7 43.Red1 Nf4 44.gf4 Qg4 45.Kf1 gf4 46.Qd5 (46.Qd5 Qh3 47.Ke1+–) 1–0. Rosner,Dirk – Soliman,Samy, CiF, 2002.

3.d3 e5 4.Ne5 Bb4 5.c3=.

3.d4 Nd5 4.c3 d6 5.e3 Bd7 6.Bc4 Be6 (6...e6 7.Qb3+=) 7.0-0 (7.Qd3 c6+–) 7...Nd7 (7...Nc3 8.Qd3 Bc4 9.Qc4 Nb1 10.Qb5 Nd7 11.Rb1+=) 8.Nbd2 (8.Bd3!? N7b6 9.a3+–) 8...Nc3= 9.Qc2 Bc4 10.Nc4 Ne4 11.Nfd2 (11.Na5 Qc8=) 11...d5=+ 12.Nb2 (12.Na5 Rb8=+) 12...e6–/+ 13.Nf3 (better 13.Nd3!?–/+) 13...Bb4–+ 14.Nd3 Bc3 (better 14...Bd6!?–+) 15.Rb1=+ Nb6 16.Nfe5 Qe7?? (16...c5 17.Nc5 Nc5 18.Qc3 Ncd7=+) 17.Bb2?? (better 17.f3 0-0 18.fe4 fe4 19.Rf8 (worse 19.Qc3 Rf1 20.Kf1 ed3+–) 19...Qf8 20.Nf4+–) 17...Bb2 18.Rb2 0-0-0 (better 18...Rc8!?–/+) 19.a4 Qa3 (19...Nd6 20.Rfb1 Nbc4 21.Nc4 dc4 22.Ne5+=) 20.Nf7 1–0. negoflor – beerfactory, gameknot.com, 2018.

3.d4 d6 4.e3 g6 5.Be2 Bg7 6.Bb2 0-0 7.0-0 c6 8.c4 Qc7 9.Qb3 Ne4 10.Nc3 Nd7 11.Ne4 fe4 12.Nd2 Nf6 13.c5 d5 14.a4 Bg4 15.Qd1 Be2 16.Qe2 e5 17.Rad1 Rae8 18.Nb3 (18.de5 Nd7=) 18...Nd7 19.h3 ed4 20.Bd4 Bd4 21.Nd4 (21.ed4 Rf6=) 21...Ne5 22.b5 Nd3 23.bc6 bc6 24.Qg4 (24.Rd3 ed3 25.Qd3 Rf6=+) 24...Nc5 (24...Rf6 25.Qg3 Qa5 26.Qg5-/+) 25.Rc1=+ Qd6 26.a5 Re7 27.Rc3 Ref7 28.Rc2 Rb7 29.Rfc1 Nd3 30.Rc6 Qe7 31.a6 Rb2 Pawn f2, live or die! (31...Nf2? 32.Qe6 Qe6 33.Ne6+- (worse 33.Re6 Rd7-/+)) 32.R6c2 Rb6 (32...Rf2 33.Rc8 Rf8 34.Rf8 Qf8 35.Rc8 Rb1 36.Kh2 Rh1 37.Kg3+-) 33.Rc7 Qf6 (33...Qd6 34.Qh4 h5+=) 34.R1c6 Rc6 35.Nc6 Qf2 (35...Nf2 36.Qd7 Rf7 37.Qf7 Qf7 38.Rf7 Kf7 39.Na7+-) 36.Kh2 Ne1 (36...Qe3 37.Ne7 Kg7 38.Ng6 Kh6 39.Qh4 Kg6 40.Qh7 Kg5 41.Qg7 Kf5 42.Qf8 Ke5 43.Qg7 Ke6 44.Rc6 Kf5 45.Qf6) 37.Nd4 Kh8 (37...Rf5!? 38.Ra7 Nf3 39.Nf3 ef3+/-) 38.Qg3 Qg3 39.Kg3 Ra8 40.Ne6 Nd3 41.Kg4 (41.Rb7 h6+/-) 41...h6 (better 41...Nb4!?=) 42.Nf4+/- h5 43.Kg5 Nf4 44.Kf4 Re8 45.Ra7 Re6 46.Ra8 Kg7 47.a7 Ra6 48.Ke5 Ra5 49.g4 hg4 50.hg4 g5 (50...Kh7 51.Kd6+-) 51.Kd4 (51.Kf5 d4 52.Ke4 de3 53.Ke3 Ra4+-) 51...Kh7 52.Kc3 Ra1 53.Kb4 d4 54.ed4 e3 55.d5 e2 56.Re8 1-0. rabscuttle (2335) - marekt (2170), gameknot.com, 2017.

3.d4 g6 4.e3+= Bg7 5.Bd3 0-0 6.0-0 d6 7.Bb2 Qe8 8.a3 Be6 9.c4 Nbd7 10.Nc3 Bf7 11.Qb3 e5 12.Nb5 e4 13.Nc7 Qc8 14.Na8 ed3 15.Rfc1 (15.Nd2=) 15...Ne4 (better is 15...b5!? 16.Nd2 Ne4 17.Qd3 Nd2 18.Qd2 bc4=+) 16.Qd3+= Qa8 17.Rab1 Ndf6 18.Rc2 b6 19.b5 Qd8 20.Rd1 d5 (20...Qc7 21.d5+=) 21.c5+/– g5 (21...Qc7 22.c6+/–) 22.Ne5 Ng4 23.c6 Qc7 24.f4 gf4 25.ef4 Bh6 26.Rf1 (< 26.Nf7 Rf7 27.g3 Bf4 28.gf4 Rg7+=) 26...Be6 27.Bc3 Kh8 28.Qh3 Bg7? (better is 28...Kg7+/–) 29.Ng6+– Kg8 30.Nf8 Bf8 31.Bb4 Bb4 (31...Bh6 32.Qf3+–) 32.ab4 Nd6 33.Re1 Bf7 34.Qg3 Kh8 (34...Bg6 35.Qd3+–) 35.Qd3 Bg6 36.Rce2 Ne4 37.g3 Bh5 (37...Ngf6 38.Qb3+–) 38.Qa3 (38.Ra2 Bf7+–) 38...Ngf6 39.Ra2 Qg7 (39...Qe7+–) 40.Qa7 Qg4 (40...Bf7 41.Qb6 Ne8 42.Ra8+–) 41.Qb8 Kg7 42.c7 Qh3 (42...Nd6 43.Ra8 Nfe8+–) 43.c8Q Bf3 44.Ra7 Kg6 (44...Kh6 45.Qf8 Kh5 46.Qf7 Kg4 47.Qbg8 Ng8 48.Qg8 Kh5 49.Rh7) 45.Qg8! (45…Kh6 46.Qbf8 Kh5 47.Qff7 Kh6 48.Qgg7) 1–0. b4_player (2165) – sakkozof (1705), GameColony.com, 2002.

3.e3 e5 4.Ne5 Qe7 (4...Bb4!? 5.Bb2 d5=) 5.Nd3+/- d5 (5...Nc6 6.b5 Ne5 7.Bb2+/-) 6.Bb2 h6 (6...Be6 7.Be2+/-) 7.Be2 (7.Nf4 Kf7+-) 7...g5 (7...Be6 8.0-0+/-) 8.0-0 Be6 9.Nc3 Nc6 (9...Nbd7 10.Nb5 Kd8 11.f4+/-) 10.Bh5 (10.Nb5 Bg7+-) 10...Kd7 (10...Kd8!?+/-) 11.Nc5 (11.b5 Nd8 12.Ne5 Kc8+-) 11...Kc8 12.Ne6 Qe6 13.Nd5! Bb4?? (13...Qd5 14.Bf6 Discovered attack (14.Bf6 Deflection; 14.Bf6 Overloading); 13...Nd5 14.Bh8 Pinning (14.Bh8 Deflection; 14.Bh8 Clearance)) 14.Bf6 Rd8 (14...Rf8 15.Nb4 Nb4 16.Bb2+-) 15.Bd8 Qd5 16.Bf6 b6 (16...Qd6 17.Bg7 Bd2 18.Rb1+-) 17.c3 Bd6 (17...Bf8 18.Qb3 Qb3 19.ab3+-) 18.Bf3 Qe6 19.Bc6 Qf6 (19...Bh2 20.Kh2 Qc6 21.Bd4+-) 20.Ba8 1-0. OnlyPolishOpening (1905) - CALLMECAKE (1610), lichess.org, 2020.

3.g3 c6 4.Bb2 Qb6 5.a3 a5 6.Bd4 Qc7 7.c4 d6 8.Bg2 e5 9.Bc3 Ne4 10.0-0 Nc3 11.Nc3 Be6 12.d3 White prepares the advance b5 12...Be7 13.b5 Bf6 14.e4 0-0 15.bc6 bc6 (worse is 15...Qc6 16.ef5 Bc8 17.Ng5+/–) 16.Rb1 Nd7 17.Qc2 Rab8 18.Nd2 f4 (18...Bg5 19.Rb8 Rb8 20.ef5 Bf5 21.Nde4+=) 19.Rb8 Rb8 20.Rb1 (20.gf4 ef4 21.Ne2 g5+=) 20...g5 (20...Rb1!? 21.Qb1 fg3 22.hg3 Qa7–/+) 21.Rb8+= Qb8 22.Qb3 Qc7 23.Na4 g4 24.f3 Qa7–+ (24...Qa7 25.Kh1 Qf2–+) 0–1. Socoteanu,Mihai (2155) – Grunberg,Florin (2200), Centrocoop Sept op, 1999. (=1.Nf3 f5 2.b4 Nf6)

4.Bb2 Nbd7 5.e3 e5 6.d4 e4 7.Nfd2 d5 8.c4 c6 9.cd5 cd5 10.Bb5 Bd6 11.Nb3 b6 (11...0-0 12.Nc5 Nb8 13.Nc3+=) 12.Qe2 (12.Bc6 Rb8+=) 12...0-0= 13.Bc3 (better is 13.Bc6!? Rb8 14.Nc3=) 13...Bb7 14.a4 a6 (14...a6 15.Bd7 Nd7–/+) 0–1. jelquez (2275) – alaamattar (2345), net–chess.com, 2016.

4.d3 e5 5.e3 Be7 6.h3 0-0 7.Bb2 Nbd7 8.Be2 c6 9.0-0 Qc7 10.Re1 d5 11.Bf1 (11.c4 dc4 12.dc4 c5=) 11...b6 12.Nbd2 c5 13.c3 (13.bc5!? bc5 14.c4=) 13...e4–/+ 14.de4 fe4 15.Nh2 Ne5 16.Rc1 (16.c4 Be6–/+) 16...Be6 (16...c4 17.f4 Nd3 18.Bd3 ed3 19.Nhf3–+) 17.Nb3 (17.c4 Rad8–/+) 17...Nfd7 (17...Nc4 18.Bc4 dc4 19.Nd2–/+) 18.b5 (18.Be2 Nc4 19.Bc4 dc4–+) 18...Rad8 (18...Bd6 19.f4 ef3 20.Nf3 Nf3 21.gf3 Bh2 22.Kh1–/+) 19.a4 (19.Be2 Nc4 20.Bg4 Bf7–+) 19...Qb7 (19...Bd6 20.f4 ef3 21.Nf3 Nf3 22.gf3 Bh2 23.Kh1–+) 20.Qh5 Bf7 21.Qd1 Nf6 22.Qc2 Bg6 0–1. pillsbury (2140) – mrichardson (2510), net–chess.com, 2016.

4.d4 Nbd7 5.e3 e5 6.de5 Ne5 7.Ne5 de5 8.Qd8 Kd8 9.Bb2 a5 10.b5 e4 11.Nd2 Bc5 12.Nb3 Bd6 13.a4 Bb4 14.c3 Bd6 15.Be2 Be6 16.c4 b6 (16...Bb4 17.Kf1=) 17.0-0 Ke7 18.Rfc1 Rhc8 19.Bd4 (19.Nd4 Rf8+=) 19...Bb4 (19...c5 20.Bc3=+) 20.Be5 Bd6 21.Nd4 Be5 22.Nc6 Kd6 23.Rd1 Kc5 24.Ne5 Rd8 25.Rdc1 Rd2 26.Nc6 Rb2 27.Kf1 Bd7 28.Nd4 f4 29.Ke1 (29.Rc2 Rc2 30.Nc2 fe3 31.Ne3 Be6=) 29...fe3 30.fe3 Bg4 31.Bf1 Re8 32.h3 Bd7 33.Be2 h5 34.Rab1 Rb1 35.Rb1 Re5 36.Kf2 h4 37.Nb3 Kd6 38.c5 Ke7 39.cb6 Rf5 40.Kg1 cb6 41.Rc1 Rd5 42.Bc4 Re5 43.Kf2 Rf5 44.Ke1 Rg5 45.Kf2 Rh5 46.Rd1 Rf5 47.Ke1 Re5 48.Rd4 Rg5 49.Bf1 Be6 50.Nd2 The isolani on e4 becomes a target 50...Rd5 51.Kf2 Rd6 52.Be2 Bf5 53.Bc4 g5 54.Bb3 Rd7 55.Bc4 g4 56.hg4 Ng4 57.Ke2 Nf6 58.Bb3 Be6 59.Be6 Rd4 60.ed4 Ke6 61.Nc4 Nd5 62.Kf2 Kf6 63.Nd6 Nc3 64.Ke3 Na4 65.Ne4 Kf5 66.Nd6 Ke6 67.Nc4 Nc3 68.Nb6 Nb5 69.d5 Kf5 70.Kd3 Kf4 71.Nc4 Kg3 72.d6?? (better 72.Ne3=+) 72...Nd6!-+ 73.Nd6 Kg2 74.Nf5 h3 75.Ne3 Kf3 76.Nf1 a4 77.Kc3 Kf2 (77...Kg2 78.Ne3 Kf2 79.Ng4 Kf3 80.Nh2 Kg2 81.Ng4-+) 78.Nh2 Kg2 79.Ng4 a3 80.Kb3 Kg3 81.Ne3 Kf3 82.Nf1 a2 ½-½. foogie1 (2270) - marekt (2175), gameknot.com, 2017.

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

4.Nc3 d6 5.g3 e5 6.Bg2 (6.d4 ed4 7.Qd4 Nc6 8.Qf4 d5 9.Nb5 Bd6 10.Nd6 cd6 11.Bg2 0-0) 6...e4 (6...Be7 7.0-0 0-0 8.d3 a6 9.Bb2 Nc6 10.Qd2 Bd7 11.Rad1 Qe8) 7.Nd4 Bd7 (7...c5!? 8.Nb3 c4+= 9.Nd4 Qb6 10.e3 Nc6 11.Nc6 bc6; 7...a5 8.b5 c5 9.bc6 Nc6 10.Nc6 bc6 11.0-0 d5) 8.d3+/– d5 (8...c5 9.Nb3 cb4 10.ab4 d5 11.b5 Bb4) 9.de4 fe4 (9...de4 10.0-0 Nc6 11.Bf4 Kf7) 10.Bg5 Bc6? (better is 10...Be7 11.Bf6 Bf6 12.Nd5 Nc6+/–; 10...c6 11.0-0 Be7) 11.b5+– Bd7 12.Nd5! Be6 (12...Nd5 13.Bd8 Pinning (13.Bd8 Deflection)) 13.Ne6 Nd5 14.Bd8 Nc3 15.Nc7 Kf7 16.Qd4 Nb5 17.Qd5 Kg6 18.Be4 Kh6 19.Qg5 1–0. erneste – galen, internet, 2011.

3.Bb2 (--> 1.b4 f5 2.Bb2 Nf6 3.Nf3).

3.Bb2 d6 4.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.Nf3 Nf6).

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

3.Bb2 e6 4.a3 Be7 5.e3 0-0 6.c4 (--> 1.b4 f5 2.Bb2 Nf6 3.c4 e6 4.a3 Be7 5.Nf3 0-0 6.e3).

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

4.Ne5 Bb4 5.Qb3=.

4.Ne5 Bb4!? 5.e3 0-0=.

4.Ne5 Nc6 5.Nc6+= dc6 6.Qb3 a5 7.b5 (7.ba5 Bd6+=) 7...Bc5 (7...a4 8.Qc2+=) 8.e3 0-0 9.Ba3 (9.bc6 bc6 10.Ba3 Ba3 11.Na3 Qe7+/–) 9...Ba3+= 10.Qa3 f4 11.Be2 (11.Nc3 Ng4 12.c5 Nf2 13.Bc4 Kh8=) 11...Ne4 (11...fe3 12.fe3 Ne4 13.g3+=) 12.Qd3 (12.bc6 Qf6 13.0-0 Qc6+/–) 12...fe3 13.Qe3 (13.Qe4 Qf6 14.d4 Qf2 15.Kd1 Bf5–+) 13...Qf6 14.d4 Bf5 (14...Re8 15.bc6 Nd6=) 15.0-0 (15.bc6 Qc6 16.0-0 Rae8=) 15...Rae8 (15...c5 16.Nc3 Nc3 17.Qc3 cd4 18.Qd2=) 16.Na3 (16.bc6!? bc6 17.Na3=) 16...c5+= 0–1. Cirulis,Ilmars (1960) – Nichols,Scott (2250), FICGS, 2016.

4.Qb3 d5 5.e3 a5 6.b5 Ne4 7.cd5 ed5 8.Bb2 a4 9.Qc2 Nd7 10.Be2 Bd6 11.d3 Bb4 12.Nfd2 Nd2 13.Nd2 0-0 14.Bf3 Nb6 15.Be5 Bd6 16.Bd6 Qd6 17.0-0 Bd7 18.Rfc1 Rfc8 19.Qc5 Ra5 20.Rab1 Qc5 21.Rc5 c6 22.h3 Kf7 (23.bc6 Rc5 24.cb7 Rb8 25.Rb6 Ke7+=). Steinutz (1830) – JanP (2515), ChessWorld.net, 2003.

4.Qb3 Be7 5.e3 0-0 6.Be2 c6 7.Bb2 a5 8.b5 c5 9.Nc3 b6 10.–0 d6 11.d4 Re8 12.Rfd1 Qc7 13.Nd2 Bb7 14.Bf3 Bf3 15.Nf3 Nbd7 16.a4 Rad8 17.Ne2 Nf8 18.Nf4 Ne4 19.dc5 Nc5 20.Qc2 Ng6 (20...Nfd7 21.Nh5 Ne5 22.Ne5 de5 23.f4=) 21.Nd3 (21.Ng6 hg6 22.Nd4 Bf6+=) 21...Nd3= 22.Qd3 Ne5 23.Ne5 de5 24.Qe2 e4 25.f4 (25.Rac1 Rd1 26.Qd1 Rd8=) 25...ef3+= 26.gf3 Rc8 27.Qg2 (27.Kh1 Qc4 28.Qc4 Rc4+=) 27...Bc5–/+ 28.Rd3 Rcd8 29.Rad1 Rd3 (29...Be3 30.Kh1 Rd3 31.Rd3–/+) 30.Rd3 f4 31.Bd4 e5 32.Bc5 Qc5 33.Qe2 Qc4 34.ef4 Qa4 35.fe5 Qa1 36.Qd1 Qd1 37.Rd1 Re5 38.Rb1 Kf7 39.Kf2 Kf6 40.f4 Re4 41.Rc1 Rf4 42.Ke3 Kg5 43.Rc6 Rf6 44.Kd4 Kg4 45.Kd5 Kh3 46.Rc2 Rg6 47.Re2 Rf6 48.Rc2 Kg4 49.Rc6 Kf3 50.Rc2 Ke3 51.Rc6 Kd3 52.Rc1 Rh6 53.Rc6 Rh5 (53...Rh5 54.Kd6 Rb5–+) 0–1. Thalmann,Frank (1840) – Verfuerth,Christian (1915), Ruhrgebiet VK2, 2005. (=1.Nf3 f5 2.b4 Nf6)

4.Qb3 Be7 5.g3 0-0 6.Bg2 d6 (6...Nc6!?=) 7.0-0+= e5 8.Nc3 Kh8 (8...e4 9.Nd4+=) 9.d3 Qe8 (9...a6 10.Nd5+=) 10.a4 (10.Be3 Nc6+/–) 10...Nc6 (10...a5 11.b5+=) 11.b5 Nd8 12.a5 Qh5 (12...Ne6 13.a6+=) 13.a6 f4 14.ab7 Nb7 (14...Bb7 15.Nd5 Bd5 16.cd5 Nb7+/–) 15.Nd5 (better is 15.Qc2!?+/–) 15...Nc5= 16.Qc2 Nd5 17.cd5 fg3 18.fg3 Bd7 (18...Bb7 19.e4=) 19.Ra5 Nb7 20.Ra3 Nc5 21.Qa2 e4 (21...Bb5 22.Ra7 Rab8 23.Rc7=) 22.de4+= Bb5 (22...Ne4? 23.Re3 Bf5 24.Qc4+–) 23.Nd4 Rf1 24.Bf1 Bd7 25.Ra7 Rc8 (25...Ra7 26.Qa7 Bf6 27.Nf3 Ne4 28.Qc7+=) 26.Bg2+/– Ne4 27.Be4 Qe5 28.Bf3 Qd4 29.Kg2 Bf6 30.Ra8 Qb6?? (better is 30...Qe5+=) 31.Rc8+– Bc8 32.Qa4 c6 33.dc6 h6?? (33...Qc7+–) 34.c7! Kh7 (34...Qc7 35.Qe8 Mate attack) 35.Qe8 (35.Qe8 Qb7 36.Be4 Bf5 37.Bb7 h5 38.Qh5 Kg8 39.Bd5 Be6 40.c8Q Bd8 41.Qd8; 35.Be4 g6 36.Qe8 Bf5 37.Bf5 Qc6 38.Qc6 gf5 39.c8Q f4 40.Q6d7 Be7 41.Qe7 Kg6 42.Qg4) 1–0. Hovhanisian,M (2505) – Froeyman,H (2310), Leuven BEL, 2013. (=1.Nf3 f5 2.b4 Nf6)

4.b5 a6+=.

4.Bb2 Bg7 5.d4 0-0 6.Nbd2 c6 7.e3 a5 8.a3 d6 9.Qb3 Kh8 10.Be2 ab4 11.ab4 Ra1 12.Ba1 Be6 13.0-0 b5 14.Bb2 Na6 15.Ra1 Nc7 16.h3 Qb8 17.Ra5 bc4 18.Bc4 Bc4 19.Qc4 Qb7 20.Nb3 Nfd5 Attacking the isolated pawn on b4 21.Bc3 Nc3 22.Qc3 Nd5 23.Qc4 Rb8 24.Kh2 Bf6 25.Nfd2 Nb4 26.Qe6 Qc7 27.g4 fg4–/+ 28.hg4 c5 29.Kg2 cd4–+ 30.Ne4 Nc6 31.Nf6 Na5 32.Nd5 Qc8 33.Qe7?? Qg4 34.Kh2 Qh5 35.Kg3 Qd5 36.Na5 Qe5 37.Qe5 de5 38.ed4 ed4 39.Nc6 d3 40.Kf3 Re8 0–1. Machala,V (1960) – Sondermann,J (2145), Open, Teplice CZE, 2009. (=1.Nf3 f5 2.b4 Nf6)

4.Nc3 Bg7 5.Bb2 d6 6.d4 0-0 7.d5 (7.e3 c5 8.bc5 dc5+=) 7...a5 (7...e5 8.e3=) 8.b5 (8.a3 Ne4 9.Qc1 e6=) 8...e5 (8...Ne4 9.Qc2=) 9.de6 (9.e3 Nbd7=) 9...Be6 10.e3. Gonzalo,Omar – Gandolfo,Marco, IECC, 2002.

4.d4+= Bg7 5.e3 d6 6.Nc3 (6.Be2 0-0+=) 6...Ne4 (6...0-0 7.c5=) 7.Bb2+= 0-0 8.Be2 e6 9.0-0 b6 10.Qb3 Bb7 11.d5 e5 (better is 11...a5!?=) 12.Ne4+/– fe4 13.Nd2 c5 (13...Qh4 14.Qc2+/–) 14.bc5+– dc5 15.Bg4 Qh4 16.Be6 Kh8 17.f4! ef3? (17...Qf4 18.ef4) 18.Nf3 (18.Rf3?! Na6 19.Raf1 Rfe8+–) 18...Qe4 (18...Rf3 19.Rf3 Na6+–) 19.Ng5 Rf1 (19...Re8 20.Ne4 Re6 21.Rf7 Bd5 22.Qd3+–) 20.Rf1 Qe3 21.Qe3 (21.Qe3 Nd7 22.Nf7 Kg8 23.Ne5 Kh8 24.Ng6 hg6 25.Qh6) 1–0. pierre – hairypoet, chess.com, 2007.

4.Ba3 Be7 5.e3 0-0 6.b5 (6.Be2 a5 7.b5 Ba3 8.Na3 Qe7=+) 6...Ba3 7.Na3 b6 8.c4 Bb7 9.Be2 c6 10.0-0 cb5 (10...Qe7 11.Qb3=) 11.cb5 d6 (11...a6 12.Qb3=) 12.Nc4 Qe7 13.Qb3 (13.Nd4 Nbd7+=) 13...Nbd7= 14.Ncd2 (14.Nd4 Nc5 15.Qc2 Nd5=) 14...Nc5 15.Qc4 Bd5 16.Qh4 Qf7 17.d4 Nce4 18.Ne4 fe4 19.Ng5 Qg6 20.f3 h6 (better is 20...ef3!? 21.Bf3 h6=+) 21.Ne4+= Ne4 22.fe4 Be4 23.g3 Rf1 (23...Bd5 24.Rf8 Rf8 25.Rf1 Rf1 26.Kf1 Qb1 27.Kf2 Qa2 28.Qd8 Kh7 29.Ke1 Qb1 30.Kf2–/+) 24.Rf1+= Rf8? (better is 24...Bd5+=) 25.Rf8+– Kf8 26.Bh5 Qf6?? (better is 26...Qg5 27.Qe4 Qh5 28.Qe6 d5+–) 27.Qf4 Qf4=+ 28.gf4 Bd3 29.Bf3 Bb5–/+ 30.e4 Ke7 31.Kf2 g5 32.Ke3 gf4–+ 33.Kf4 Bc4 34.a3 Kf6 35.e5–/+ de5 36.de5=+ Kg6 37.h4 a5 38.h5 Kg7 39.Ke3 Kf7 40.Kd4 Ba6 41.Kc3 Ke7 42.Kd4 Kd7 43.Bg4 b5 44.Kc5 a4?? 45.Kb6?? b4!–+ 46.ab4 a3 47.b5 Bb5! 48.Kb5 a2 49.Bf3 a1Q 50.Bc6 Kc7 (51.Be8 Qe5 52.Kb4 Qd4 53.Kb3 e5–+) 0–1. pinecrest1981 – weezer55, Live Game Caissa's Web, 2004.

4.c3 Be7=.

4.h3 Bb4–/+ 5.c3 Ba5 6.Qa4 Nc6 7.Bd2 0-0 8.Na3 d5 9.Rb1 Bb6 10.e3 e5 11.Be2 e4 12.de4 fe4 (12...de4?! 13.Nd4–/+) 13.0-0?? (better is 13.Nd4–+) 13...ef3 14.Bf3 Bf5 15.Rbc1 Ne5 16.Be2 Ne4 17.Be1 Bh3! 18.gh3 Qg5 19.Kh1 Be3! (19...Be3 20.Qd1 Bc1 21.Qd5 Nf7 22.Qe4 Rae8–+) 0–1. pillsbury (2140) – pierred (2780), net–chess.com, 2016.

4.a3 d5 5.Bg5 Bd6 ½–½. Arkell,Keith C (2460) – Rendle,Thomas E (2380), The Four Nations Chess League, 2012. (=1.d4 f5 2.Nf3 Nf6 3.b4 e6)

4.a3 Be7 (--> 2.Nf3 e6 3.a3 Be7 4.d4 Nf6).

4.a4 Bb4 5.Bd2 a5 6.c4 c5 (6...0-0 7.e3–/+) 7.Bb4+= cb4 8.e4? (better is 8.e3+=) 8...fe4–+ 9.Nh4? (9.Ng5 h6 10.Nh3 0-0–+) 9...0-0 (9...g5 10.g4 gh4 11.g5–+) 10.Nd2 (10.g4 Ne8 11.Ng2 Qf6–+) 10...d5 (10...g5!? 11.g4 gh4 12.g5–+) 11.Qg4 (11.g3–+) 11…Qe7 (11...Qe7 12.Qg5 Nc6–+) 0–1. jbbrown – gregorgysi (1745), net–chess.com, 2001. (=1.d4 f5 2.b4 Nf6 3.Nf3 e6)

4.c3=.

4.Bg5 Bb4 5.c3 Ba5 6.Na3?? (6.e3 0-0=+) 6...c6 (6...Bc3 7.Nd2 Bd4 8.Bf6 Bf6 9.Rb1–+) 7.Nc4? (7.Qd3 b5–/+) 7...Bc7?? (better is 7...Bc3 8.Nfd2 Ba1 9.Nd6 Ke7 10.Nc8 Qc8 11.Qa1 Kf7–+) 8.Bf6 Qf6 9.e3 0-0 10.Qb3 Kh8 11.Bd3 b5 12.Nb2 a5 13.0-0 d6 14.Rae1 Nd7 15.e4 a4 16.Qc2 Bb7 17.e5? (better is 17.ef5 ef5 18.Nd1–/+) 17...de5–+ 18.de5 Be5 19.Ne5 Ne5 20.Qe2 Ng4 21.Qe6 Qh4 22.h3=+ Nh6 23.Re3 c5 24.Rg3?? f4–+ 25.Rg4 Qg4 26.hg4+– Rae8 27.Qd7 Bg2 28.Re1 Rd8?? 29.Qb5+– Rd3 (30.Nd3 f3+–; 29...a3 30.Na4 Bd5 31.Qc5 Ng4 32.Qa3 Nf6+–). BlackMomba – COUNTDOWN2MATE3, Live Game Caissa's Web, 2004.