2.a3 h6 3.Bb2 g5 4.Bf6 ef6 5.Nc3 Bg7 6.e4 0-0 7.Bc4 c6 8.h4 Re8 9.Nge2 d6 10.d3 (10.hg5 fg5 11.b5 Qa5=) 10...Be6 (better 10...g4!?=+) 11.Be6+= fe6 12.Qd2 (12.hg5 fg5 13.d4 Rf8+=) 12...d5 (12...g4 13.f3=) 13.0-0 (13.hg5 fg5 14.e5 a5+=) 13...Nd7 (13...de4 14.Ne4 f5 15.N4c3=+) 14.h5 (14.hg5 fg5 15.d4 Rf8=) 14...Ne5 15.Ng3 Qe7 16.Rae1 Qf7 17.f4 Ng4 (17...gf4 18.Qf4 d4 19.Nce2=) 18.f5 (better 18.d4+=) 18...e5 (better 18...Qc7 19.Rf3 Ne5=) 19.Qe2 d4 20.Nd1 (worse 20.Qg4 dc3 21.Rb1 Qa2+=) 20...Ne3 21.Ne3 de3 22.Qe3 Bf8 23.c3 Rad8 (23...Qb3 24.Ne2+/-) 24.d4 (better 24.Ra1!?+/-) 24...ed4+= 25.cd4 Qc4 (25...Bd6!?+=) 26.e5 Qd4 27.Qd4 Rd4 28.e6 (worse 28.ef6 Re1 29.Re1 Rd3=+) 28...Bd6 29.Ne4 Be5 30.Nc5 b6 (better 30...Re7!?+/-) 31.Nd7+- Rd5? (31...Rd7 32.ed7 Rd8+/-) 32.Rd1 (better 32.Re5 fe5 33.f6 Rd7 34.f7 (34.ed7?! Rd8 35.Rd1 Kf7+-) 34...Kf8 35.fe8R (35.ed7?! Rd8+=) 35...Ke8 36.ed7 Kd7 37.Rf7 Ke8 38.Ra7+-) 32...Kg7+/- 33.Rd5 cd5 34.Ne5 (34.Rd1 d4 35.b5+/- (35.Ne5?! fe5 36.g4 Rc8=)) 34...fe5+= 35.f6 Kf8 36.e7 Kf7 37.Kh2 (37.Rf5 d4+=) 37...Rc8 38.Kg3 Rc4 (38...e4 39.Rf5=) 39.Re1 (39.Rd1 Rc8 40.Rd5 Kf6 41.Rd6 Ke7 42.Rh6 Rc3 43.Kg4 Ra3+=) 39...e4+= 40.Kg4 (better 40.Rd1!? Rc8 41.Rd5 Kf6 42.Rd7=) 40...Rc6=+ 41.Rf1? (better 41.Kf5!?=+) 41...Re6-+ 42.Kg3? (better 42.e8Q Re8 43.Kf5-+) 42...d4 43.Re1 e3 44.Kf3 Rf6 (44...Kf6 45.Ke2-+) 45.Ke4 Rd6 46.Kd3 (46.b5 Ke7 47.g4 Ke6-+) 46...Ke7 (46...a6 47.Rf1 Ke7 48.a4-+) 47.Rf1 (47.b5 Kf6-+) 47...Ke6 48.Re1 (48.b5 Ke5 49.Rf8 Rf6 50.Re8 Re6-+) 48...Ke5 49.Re2 (49.Rc1 b5 50.Rc7 Kf4-+) 49...Kf4 (49...Rc6!? 50.Re3 de3 51.b5-+) 50.g3 (50.b5 Kg4-+) 50...Kf3 51.Re1 Rc6 (51...a6 52.Rg1-+) 52.Rf1 (52.Kd4 e2 53.Kd5 Rc3-+) 52...Kg2 53.Rf5 (53.Re1-+) 53...Rc4 (better 53...Re6 54.Ke2 d3 55.Kd3 e2-+) 54.Kc4+= e2 55.Re5 Kf2 0-1. black_bishop_88 (2490) - LastCaissa (2460), lichess.org, 2020. (=1.a3 Nf6 2.b4)

2.a4 Nd5 3.c3= e6 4.e4+= Nf4 5.d4 Ng6 6.Nf3 d5 7.Bd3 Nf4?? 8.Bf4+– de4 9.Be4 f5 10.Bd3 Bd6 11.Bg5 Qd7 12.0-0 0-0 13.Re1 Nc6 14.b5 Na5 15.Ne5 Be5 16.Re5 h6 17.Bf4 g5 18.Bd2 b6 19.Qh5 Qg7 20.Na3 Bb7 21.Re6 Rf6 22.Rae1 (22...Raf8 23.Re7+–) 1–0. NN – NN, 2002.

2.b5 Ne4 3.e3 e5 4.Bb2 Qf6 5.Nf3 (5.Qf3 Qf3 6.gf3+=) 5...a6 (better 5...d6!?=) 6.Be5+/- Qg6 (better 6...Qd8+/-) 7.Nh4 (better 7.Bc7!? ab5 8.Ne5+-) 7...Qe6 (7...Qg5 8.Bg3=) 8.Nf3 (worse 8.Bc7 Qf6 9.Qf3 Qh4-/+ (9...Qa1 10.Qe4 Be7 11.c4+/-)) 8...ab5 (8...Qg6!?=) 9.Bb5 (9.Bc7 b4+-) 9...Nc6 (better 9...c6 10.Be2 d6+=) 10.Bd3?? (10.Bc7!? Ra2 11.Ra2 Qa2 12.0-0+-) 10...Nc5?? (10...Nf2 11.Kf2 Ne5 12.Nc3=+) 11.Bb2 (better 11.Bc7!? Nd3 12.cd3+/-) 11...Nd3= (worse 11...Ra2 12.Bf5 Qd5 13.Nc3 Ra1 14.Nd5 Rd1 15.Kd1+/-) 12.cd3 Nb4 Now all is on a2 13.Qe2?? (better 13.0-0=) 13...Nc2-+ 14.Kf1 Na1 15.Ba1 (15.Nc3 Nc2-+) 15...Ra2 (better 15...Qa2 16.g3 Qa1-+) 16.Bc3 b5 17.g3 (17.Nd4 Qg6 18.Nb5-+) 17...b4 18.Bd4 c5 19.Be5 d6 20.Bf4 Bb7 (20...Ra1!? 21.Ng5 Rb1 22.Kg2-+) 21.Kg2 g5! 22.Bg5 Qg4 (22...Bg7 23.e4-+) 23.Bf4 h5 (23...Bf3 24.Qf3 Qf3 25.Kf3-+) 24.h3 Qf3 25.Qf3 Bf3 26.Kf3 Bg7 (26...Kd7 27.e4-+) 27.d4? (better 27.Bd6!? Bf8 28.Be5=+) 27...cd4 (27...Kd7 28.dc5 dc5 29.Rc1-+) 28.ed4 (28.Bd6 Kd7 29.Bc5 de3 30.fe3 b3-+) 28...Bd4 (better 28...Kd7-+) 29.d3? (better 29.Bd6 b3 30.Re1 Kd7 31.Re4-+) 29...Kd7 (29...Rf2 30.Ke4 Be5 31.Ke3-+) 30.Nd2 Rc8 31.Be3 (31.Rf1-+) 31...Be3 32.Ke3 Rcc2 (better 32...Re8!? 33.Ne4 d5 34.Rd1-+) 33.Rd1 Ke6 (33...d5 34.Nf3-+) 34.Ne4 (34.f3 Rcb2 35.Ne4 f5 36.Ng5 Kf6-+) 34...Re2 (34...b3 35.d4 b2 36.d5 Ke7 37.Rb1-+) 35.Kf3 (35.Kd4-+) 35...f5 36.Ng5 Kd5 37.h4 (37.Rf1-+) 37...Rf2 38.Ke3 Rae2 0-1. Poncheki (2315) - Bostonbliz (2640), Casual bullet game, lichess.org, 2023.

2.b5 Ng4 3.e3 Nf2 4.Kf2 e5 5.Bb2 Bc5 6.Be2 0-0 7.Nf3 7...e4 8.Rf1?? (better 8.Nd4+-) 8...ef3= 9.Bf3 (worse 9.Kf3 d5-/+) 9...d5 10.Kg1 Bd6 (10...d4 11.Ba3 Qe7 12.Bc5 Qc5 13.Qe2=+) 11.Nc3 Qh4 (better 11...c6!?=) 12.g3+/- (12.Nd5?? Bh2 13.Kh1 Bg3 14.Kg1 Qh2; 12.Bd5?? Bh2 13.Kh1 Bg3 14.Kg1 Qh2) 12...Bg3 (12...Qb4!? 13.a3 Qb2+/-) 13.hg3+- Qg3 14.Bg2 Bh3 15.Qf3 Qg2 16.Qg2 Bg2 17.Kg2 c6 18.Rg1 f6 19.Kf3 (19.bc6 bc6 20.Ba3 Rf7+/-) 19...Nd7+/- 20.Ne2 (20.Rab1 Ne5 21.Ke2 h5+/-) 20...Ne5 21.Kf2 Rae8 22.bc6 bc6 23.Nf4 Nc4 24.Bc3 g6 (24...Kf7 25.Rab1 g5 26.Ne2+/-) 25.Rab1 Re7? (25...Rf7 26.Ke2+/-) 26.Rb4 (better 26.Bb4!? Rfe8 27.Be7 Re7 28.Rb8 Kf7+-) 26...a5 (26...Nd6 27.d3 Kf7 28.Bd4+/-) 27.Rb3 (27.Ra4!?+-) 27...Kf7+/- 28.Ke2 g5 29.Nh5 Kg6 30.Rh1 Nd6? (better 30...f5 31.Kf2 Rfe8+=) 31.Bb4?? (31.Ba5 Re6+-) 31...Rd7?? (better 31...ab4 32.Rb4 Ra8 33.Nf6 Nc4-+ (33...Kf6?! 34.Rh6 Ke5 35.d4 Kf5 36.Rd6-/+)) 32.Bd6 Rd6 33.Rb7 Rf7 34.Rf7 (34.Nf4!? Kg7 35.Rb8+-) 34...Kf7+/- 35.Ng3 Kg6 36.Rb1 h5 37.Kf2 h4 38.Ne2 c5 (38...g4 39.Rb6 Kg5 40.a4+/-) 39.Kg2 (39.Rb5!? c4 40.Ra5+-) 39...Re6 (39...d4 40.ed4 cd4 41.Rb3=) 40.Nc3 (better 40.c3!?+/-) 40...d4= 41.ed4? (better 41.Nd1=) 41...cd4-+ 42.Nd5 Re2 43.Kf3 Rd2 44.c4? (better 44.a3 Rc2 45.Ke4-+) 44...dc3 (44...Ra2?! 45.Ke4-+) 45.Nc3 (45.Ne7 Kf7 46.Nf5-+) 45...Rd3 46.Ke4 Rc3 47.Rb6 (47.Rb2 h3-+) 47...Ra3 48.Ra6 (48.Rb2 h3-+) 48...Ra4 (48...h3!? 49.Ra8 Ra4 50.Kf3-+) 49.Kd5 Ra2 50.Ra8 Rd2 (50...h3 51.Rb8-+) 51.Ke4 (51.Kc4 g4 52.Kc3 Rd5 53.Rg8 Kf5-+) 51...Re2 52.Kf3 Re5 53.Rg8 Kf5 54.Ra8 Rb5 (54...g4!? 55.Kf2-+) 55.Kg2 Rb3 (better 55...g4 56.Kh2-+) 56.Ra5 Kg4 57.Ra6 (57.Ra4 Kh5-+) 57...f5 58.Ra4 f4 59.Ra6 (59.Ra2 h3 60.Kg1 Kh4-+) 59...Rb2 60.Kf1 f3 0-1. Poncheki (2315) - Bostonbliz (2640), Casual bullet game, lichess.org, 2023.

2.c3 a5 (--> 1.b4 a5 2.c3 Nf6).

2.c3 d5 (--> 1.b4 d5 2.c3 Nf6).

2.c3 Ne4 3.b5 Nf2 4.Kf2 e6 5.Nf3 Bc5 6.e3 Be7 7.Bd3 0-0 8.Be2 (8.Rf1 d5+-) 8...e5 (8...a6 9.Rf1+-) 9.d4 (better 9.Ne5!? d5+-) 9...e4 10.Ne5 (10.Nfd2 d5+-) 10...f5 (better 10...d6 11.Nc4 d5+/-) 11.Ng6?? (better 11.Rf1+-) 11...hg6=+ 12.Bc4 (12.Rf1!?=+) 12...d5-/+ 13.Bb3 Bh4 (13...Be6 14.Rf1-/+) 14.g3 f4 (better 14...Bg5-/+) 15.Ke2?? (better 15.ef4 Bf6 16.Re1=) 15...fe3 (better 15...Bg4!? 16.Kd2 fe3 17.Ke1 Bd1 18.Kd1-+) 16.Be3?? (better 16.Ke1 Bg5 17.h4-+) 16...Bg4 17.Kd2 Bd1 18.Rd1 (18.Kd1 Bg5 19.Re1 Be3 20.Re3 Rf1 21.Re1 Re1 22.Ke1 Qg5-+) 18...c6 (better 18...Bg5 19.Re1 Be3 20.Re3 Qg5-+) 19.Rf1 (19.bc6 bc6 20.gh4 Qh4-+) 19...cb5 (better 19...Rf1 20.bc6 bc6-+) 20.Rf8 Qf8 (better 20...Kf8 21.gh4 Qh4 22.Bd5 Qh2 23.Kc1 Nc6 24.Bc6 bc6-+) 21.Bd5 Qf7?? (better 21...Kh7 22.Bb7 Be7 23.Ba8 Qf3-+) 22.Be4?? (better 22.Bf7 Kf7 23.gh4+-) 22...Nc6 (better 22...Bf6-+) 23.Bg6 (23.gh4 Re8 24.Bc6 bc6 25.Na3 Re3 26.Ke3 Qe7 27.Kd3 Qa3 28.Re1-+) 23...Qg6 24.Na3 Bg3! 25.Nb5 (25.hg3 Qd6 Double attack (25...Qd6 Decoy)) 25...Bd6 (better 25...Bh2!? 26.Na3-+) 26.Nd6 Qg2 (better 26...Qd6 27.Rf1-+) 27.Kd3 Qd5 (27...Qd5 28.Nc4 Rc8-+) 0-1. chessovolution (1640) - NightOFzero (2110), Rated UltraBullet game, lichess.org, 2021.

2.c3 g6 3.a4 Bg7 4.a5 0-0 5.f3 (5.Bb2 a6 6.Na3 d5 7.e4 Qe8 8.g3 Nc6 9.Qe2 b5 10.ab6 Nd8 11.b5 ab5 12.Nb5 Ra1 13.Ba1 Bf5 14.Kd1 Bc8 15.Qg4 g5 16.d4 Bg4). shahinlorpari (2765) - AyMisho (2620), Rated Bullet game, lichess.org, 2021. (=1.c3 Nf6 2.b4)

2.Nc3 b6 3.e4 Bb7 4.d3 e6 5.Bg5 Be7 6.Nf3 c6 7.d4?? h6?? 8.Be3?? Bb4-+ 9.Qd3?? Ba6 10.Qd1 Bc3 (10...Bc3 11.Nd2 Bf1 12.Kf1 Ba1 13.Qa1 0-0-+) 0–1. hasant (1915) – grahamtrue (2070), net–chess.com, 2008.

2.c4 a5 3.ba5 d5 (3...e5 4.Nf3 Nc6 5.d4=+) 4.e3 c5 (4...e5 5.Bb2 Nc6 6.a6=+) 5.cd5 Nd5 6.Bb2 Nc6 7.Nc3 e5 8.Bc4 Be6 9.Qe2 (9.Qb3 Na5 10.Bb5 Ke7=+) 9...Ncb4 (9...Ndb4 10.d3=+) 10.d3 Nc3 11.Bc3 Bc4 12.dc4 Nd3 (12...Qa5 13.Rd1=) 13.Kf1 e4 14.g3 (14.Rd1 Qh4 15.Nf3+=) 14...Be7 (14...Qd7 15.Qc2=+) 15.Kg2?? (better 15.Qg4 Qd7 16.Qe4+/-) 15...0-0 16.Nh3 Bf6 17.Bf6 Qf6 18.Nf4 Nf4 (18...Qc3 19.Nd3 ed3 20.Qg4=+) 19.gf4 (19.ef4!? Qc6 20.Rhd1=+) 19...Ra5 20.Rhb1 Qc6 (20...Rd8 21.Qb2 Qg6 22.Kh1=+) 21.Rb2 Rfa8 22.Rab1 h6 (22...R5a7 23.Rb6 Qc8 24.Qh5=+) 23.Qg4= Ra2 24.Rb7 Re8 (24...Rd8 25.R1b6 Qe8 26.Qh4=) 25.Qf5 (25.R1b6!? Qc8 26.f5+=) 25...Qe6= 26.Qe6 (26.Qc5?? Qg4 27.Kf1 Qe2 28.Kg2 Qf2 29.Kh3 Qf3 30.Kh4 Rh2) 26...Re6 27.R1b6 (better 27.R1b5!?=+) 27...Rb6-/+ 28.Rb6 Ra4 29.f5 Rc4 (29...Rb4 30.Rc6 Rc4 31.Kg3=+) 30.Rb8 (30.Kg3 h5=+) 30...Kh7 31.Re8 (31.Rb7 f6=+) 31...g6-/+ 32.f6 (better 32.fg6 Kg6 33.Kg3-/+) 32...g5-+ 33.h4 (33.Rc8 Kg6-+) 33...Kg6 (33...gh4 34.Kh3-+) 34.hg5 hg5 35.Kg3 Kf6 36.Rc8 (36.Kg4 Rc2-+) 36...Kg6 37.Rg8 Kf6 38.Rc8 Rc2 (38...Kf5 39.Rd8-+) 39.Re8 (39.Kg4 Rf2 40.Rc6 Kg7 41.Kg5 Rf3-+) 39...Kf5 40.Re7 f6 41.Rc7 c4 42.Rc5 Kg6 43.Rc6 Rc1 44.Kg2 (44.f3 ef3 45.Kf3 c3-+) 44...c3 45.Rc5 c2 46.Rc6 Kf7 47.Kh2 Kg6 48.Rc4?? (48.Kg2 Kf5 49.Rc5 Ke6 50.Rc6 Kd5 51.Rc7-+) 48...Kf5-+ 49.Rc5 Kg4 50.Kg2 f5 51.Rc4 f4 52.ef4 gf4 53.Rc3 (53.f3 ef3 54.Kf2 Rh1 55.Rf4 Kg5-+ (55...Kf4?!)) 53...e3! 54.fe3 fe3 55.Rc8 (55.Rc4 Kf5 56.Kf3 Rf1 57.Ke3 c1Q 58.Rc1 Rc1-+) 55...Kf4 (55...e2!? 56.Rc4 Kf5 57.Rc2 Rc2 58.Kf2-+) 56.Rf8 (56.Rc4 Ke5 57.Kf3 Rf1 58.Ke3 c1Q 59.Rc1 Rc1-+) 56...Ke4 (better 56...Kg5 57.Rg8 Kf6 58.Rf8 Ke7 59.Rc8-+) 57.Rd8 (57.Re8 Kf5 58.Re3-+) 57...e2 58.Re8 Kd3 59.Rd8 Kc3 60.Re8 Kd2 (60...e1Q 61.Rc8 Kb4 62.Rb8 Ka5 63.Ra8 Kb6 64.Rb8 Kc7 65.Rb7 Kb7 66.Kf3 Qh1 67.Kf4 Qd5 68.Ke3 Re1 69.Kf2 c1Q 70.Kg3 Qe3 71.Kg4 Qdg5) 61.Kf3 (61.Kf3 Rf1 62.Kg2 c1Q 63.Rd8 Ke1 64.Rd5 Rf2 65.Kh3 Qh6 66.Kg4 Qf4 67.Kh5 Rg2 68.Rd8 Qg5). pacal56 (2175) - mecker (2100), Rated Blitz game, lichess.org, 2014. (=1.c4 Nf6 2.b4)

2.c4 Na6 3.a3 c5 4.b5 Nc7 5.Bb2 d5 6.g3 dc4 7.Bg2 e6 8.a4 Be7 9.Qc2 0-0 10.Qc4 Ncd5 11.h4 b6 12.h5 Bb7 13.Nf3 Nb4 14.h6 Bd5 15.Qc1 Be4 16.Nc3 Bg6 (16...Nc2!? 17.Kf1 Bf3 18.hg7 Na1 19.gf8R Kf8 20.Ba1 Bg2 21.Kg2 a6=) 17.hg7+= Re8 18.0-0 Rc8 19.Ba3 (19.Ne5!?+/-) 19...Nfd5 20.Nd5 ed5 21.Bb4 cb4 22.Qb2 Bf6 23.d4 Rc4 24.e3 Bg7 25.Rac1 Qd6 26.Nd2 Rec8 27.Rfd1 (better 27.Nc4 dc4 28.Rfd1+/-) 27...Rc3= 28.Bh3 Rc2 29.Qa1 R8c3 30.Rc2 Rc2 31.Nf3? (better 31.Bg2=+) 31...b3-+ 32.Ne1? (32.Nh4 b2 33.Qb1-+) 32...b2 33.Nc2 (33.Qb1 Rd2!! 34.Rd2 Bb1 35.Rb2 Be4-+) 33...ba1Q 34.Na1 (34.Ra1?? Bc2 35.a5 ba5 36.Ra5 Qb4-+) 34...Bh5 (34...Qa3 35.Bd7-+) 35.Rc1 (35.g4 Bg4! 36.Bg4 Qg6-+) 35...Bf6 (better 35...Qa3!? 36.Rb1-+) 36.Nb3 (36.Rc8 Kg7 37.Nc2-+) 36...Qa3 37.Rc8 Kg7 38.Nc1 Qa4 39.Nd3 (39.Bf1 Bg4 40.Rc3-+) 39...Qd1 40.Bf1 Be2 41.Nf4 (41.Rc1 Qd3 42.Be2 Qe2 43.Rc7-+) 41...Qf1 42.Kh2 Bf3 43.Rc2 (43.Nh5 Kh6 44.Nf6 Qg2) 43…Qh1 0-1. Minister007 (2320) - schmetzger (2320), Rated blitz game, lichess.org, 2020.

2.c4 Ne4 3.b5 e5 4.Bb2 Bc5 5.e3 f5 6.Be5 0-0 7.Nf3 f4 8.Be2 d6 9.Bb2 Nf2? (better 9...fe3 10.fe3 Bf5+/-) 10.Kf2+- Bg4 11.Nc3 Nd7 12.h3 (12.d4 fe3 13.Ke3 Bb6+-) 12...Bh5 (12...Bf3 13.Bf3 (worse 13.gf3 Qh4 14.Kf1 fe3 15.de3 Be3+/-; 13.Kf3?? Qg5 14.Bf1 fe3 15.Ke2 Rf2 16.Kd3 Qg6 17.Ne4 Rd2 18.Qd2 ed2-+) 13...Qh4 14.Ke2 fe3 A) 15.Bb7? Rf2 16.Kd3 Rd2 17.Qd2 Qd4 (17...ed2? 18.Ba8 Qd4 19.Kc2+-) 18.Kc2 A1) 18...ed2? 19.Ba8 Nb6 20.Bd5 Nd5 21.cd5+- (worse 21.Nd5 Qc4 22.Nc3 d5=+); A2) 18...Qd2 19.Kb3 a5-+; B) 15.de3 Qc4 16.Qd3 Qd3 17.Kd3 Ne5 18.Ke2 Nf3 19.gf3+-) 13.d4 fe3 14.Ke3 Bb6 15.Kf2 (15.Rf1 Qe7 16.Kd2 Rae8+-) 15...Nf6? (15...Bf3 16.Bf3 Ne5+-) 16.Qd3 (16.Rf1 Qe8+-) 16...Bg6 17.Qe3 Qd7 18.Qg5 (18.Rhe1!? Rae8 19.Qd2 Ba5+-) 18...Rae8 (18...Bd4 19.Ke1 Bc3 20.Bc3+/-) 19.Rhe1 (better 19.c5!? Ba5 20.Bc4 Kh8 21.Kg1+-) 19...Bd4+/- 20.Kf1 Be3 21.Qg3?? (better 21.Qh4+=) 21...Nh5-/+ 22.Qg4?? (better 22.Qh4 Qd8 23.g3 Qh4 24.gh4-+) 22...Qg4 23.hg4 (23.Rec1 Qg3 24.Nd1 Rf3 25.Bf3 Bd3 26.Be2 Qf4 27.Ke1 Bd2) 23…Ng3 0-1. Poncheki (2315) - Bostonbliz (2630), Casual bullet game, lichess.org, 2023.

2.d3 b5 3.Bb2 e6 4.a3 Bb7 5.Nd2 c5 6.bc5 Bc5 7.Ngf3 Nc6 8.e3 d5 (8...a6!?=) 9.d4+= Bd6 10.Bb5 0-0 11.0-0 Qb6 12.Bc6 (12.a4!?+=) 12...Bc6 13.Rb1 Rab8 (13...Bb5 14.Re1=) 14.Bc3 (14.c4 Qa6 15.c5 Bc7+=) 14...Qc7= 15.Bb4 a5 (15...Bb4!? 16.ab4 Rb6=) 16.Bd6+/– Qd6 17.Ne5 Ba4 18.Rb8 Rb8 19.Nb3 (19.Qc1!?+/–) 19...Bb3= 20.cb3 Qa3 21.Qa1 (21.Qc2 Qb3 22.Qc7 Qb7 23.Qa5 Ra8=) 21...Qa1 (better is 21...Rb3!? 22.Qa3 Ra3-/+) 22.Ra1= Rb3 23.h3 Rb5 24.Nc6 h6 25.Ra5 Ra5 26.Na5 Kf8 27.f3 Ne8 28.Nc6 Nd6 29.Ne5 f6 30.Ng6 Kf7 31.Nf4 Nc4 32.Kf2 g6 33.h4 g5 34.hg5 hg5 35.Nd3 f5 36.g4 fg4 37.fg4 Kf6 38.Kf3 Nd2 39.Ke2 Ne4 40.Kf3 Nd6 41.Nc5 Nf7 42.e4 de4 43.Ne4 Ke7 44.Kg3 e5 45.de5 Ne5 46.Ng5 Ng4 47.Kg4 ½–½. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

2.d3 b6 3.a3 Bb7 4.e4 Ba6 5.Be2 e5 6.Bd2 c5 7.Nc3 cb4=+ 8.ab4 Bb4 9.Nd5 Bd2 10.Qd2 Nd5 11.Nf3?? Nf4-+ 12.Bf1 Qf6 13.Qc3 Nc6 14.Rg1?? Bb7 15.g3 Ne6 16.Be2 Rc8 17.Qb2 Ned4 18.Nd4 Nd4 19.Bd1 Ra8 20.c3 Nc6 21.h3 Na5 (21...Na5 22.Ra5 Be4 23.de4 ba5-+; better is 21...0-0 22.Qb5-+) 0–1. tata (2000) – grahamtrue (2070), net–chess.com, 2008.

2.d3 d5=+.

2.d3 Ne4?? 3.de4+- g6 (3...a5 4.ba5 e5 5.f3+-) 4.Bb2 f6 5.c4 (5.e3!? e5 6.a3 d6+-) 5...e5 6.b5 a6 7.a4 Bc5 8.e3 d6 9.Nf3 0-0 10.Be2 f5 (10...Nd7 11.0-0+-) 11.ef5 (11.Qd5 Kg7 12.Be5 de5 13.Qc5 Nd7+-) 11...gf5 (11...Bb4 12.Bc3 Bc3 13.Nc3 gf5 14.0-0+-) 12.0-0 (12.Qd5!? Kg7 13.Be5 de5 14.Qc5 Nd7+-) 12...Be6 13.Nc3 Nd7 14.Nd5 c6 15.Nc3 Nf6 16.Qd2 Ne4 17.Ne4 (17.Qc2 Ng5+-) 17...fe4 18.Ne1 Qh4 19.g3 (19.a5 Rf5+-) 19...Qh3 (19...Qh6 20.Ba3 Ba3 21.Ra3+-) 20.Ng2 (better 20.bc6 bc6 21.Ba3 Ba3 22.Ra3+-) 20...Rf3 (20...Bg4 21.Nh4+-) 21.Qd1 (21.Nf4!? Qh6 22.Ne6 Qe6+-) 21...Raf8 (21...Rf6+-) 22.Qd3 (better 22.Qc2+-) 22...ed3-+ 23.Bd3 (23.Bf3 Rf3 24.Rfc1 Qh5-+) 23...R8f6 (23...cb5 24.ab5 ab5 25.Be4-+) 24.bc6 bc6 (24...Rh6 25.Nh4 Rh4 26.gh4 Rf7 27.Be5 de5 28.Be4 Qg4 29.Kh1 Qe4 30.f3 Rf3 31.Kg1 Be3 32.Rf2 Rf2 33.cb7 Qg2) 25.Be4 (25.Nh4 Rf2! 26.Rf2 Be3 27.Raf1 Qf1 28.Bf1 Rf2 29.Bc1-+) 25...Rh6 26.Nh4 Rh4 27.gh4 (27.Bh7 Rh7 28.Rfd1 Qh2 29.Kf1 Qf2) 27...Qg4 28.Kh1 Qe4 29.Rg1 Rg3 30.f3 Qf3 31.Rg2 Rg2 (31...Qg2) 32.Rg1 Bh3 (32...Bh3 33.Be5 Rg1 34.Kg1 Be3; 32...Rg1 33.Kg1 Be3) 0-1. Poncheki (2315) - Bostonbliz (2630), Casual bullet game, lichess.org, 2023.

2.d3 h5 3.h3 e5 4.c3 d5 5.a3 (5.Nf3-/+) 5...b5 (better 5...Nc6!?-/+) 6.a4=+ ba4 7.Ra4 (7.Nf3 Bd6 8.Qa4 Bd7=+) 7...Bd7=+ 8.Ra3 (8.Ra1 Bd6=+) 8...Bd6-/+ 9.Bg5 a6 10.f3? (better 10.Nd2!?=+) 10...Nc6-+ 11.e4 d4 12.Ne2 dc3 13.Nbc3 Bb4 14.Rb3 (14.Ra1 0-0-+) 14...a5 (14...0-0 15.Qd2-+) 15.Rb1 (15.d4!? ed4 16.Nd4-+) 15...a4-+ 16.Ra1 (16.Be3 a3 17.Kf2 0-0-+) 16...a3 17.h4 (17.Be3 Nd4! 18.Kf2 c5-+) 17...Be6 18.g3 (18.Be3 0-0-+) 18...0-0 (better 18...Nd4 19.Kf2 Nf3-+) 19.f4 (19.Bh3 Bh3 20.Rh3 Qd7-+) 19...Bc3 (better 19...Nd4 20.f5 Bb3 21.Bf6 Bd1 22.Bd8 Be2 23.Kf2 Bc3 24.Be2 Ba1 25.Bc7-+) 20.Nc3 Qd4 21.Qd2 Nb4 Black plans a2 22.f5 (22.Bf6 gf6 23.fe5 Qe5-+) 22...Bb3 23.Ke2 (23.Bf6 gf6 24.Ke2 Nc2-+) 23...a2 (better 23...Ng4 24.Kf3 f6 25.Bh3 fg5 26.Bg4 hg4 27.Kg4 Nd3 28.Rhf1 gh4 29.Kh4-+) 24.Be3 Qd6 25.Bg2 (25.Nb5 Qe7 26.Qc3-+) 25...Ra3 (better 25...Rfd8 26.Nb5 Qf8 27.Nc7 Rd3 28.Qd3 Nd3 29.Na8 Bc4 30.Ra2 Nb2 31.Kf3 Ba2-+) 26.Nb5+– Qd7 27.Qb4 (27.Na3 Rd8 28.Qc3 Qa4 29.Qc7 Rd3-/+) 27...Qc6?? (better 27...Rd8 28.Nd4 Qa4 29.Qa4 Ba4+–) 28.Na3 Ba4 29.Nc4 Qa8 (29...Ra8 30.Ne5 Qe8 31.Qc5+–) 30.Ra2 (better 30.Qb2 Ng4 31.Qa2 Bc6 32.Qa8 Ra8 33.Ra8 Ba8+–) 30...Bd1 31.Rd1 Qa2 32.Rd2 Qa1 33.Bc5 Ra8 34.Nb2 (34.Qb7 Nd7 35.Be3 Qa6 36.Qc7 Qc8 37.Qc8 Rc8+–) 34...Ra2 (34...Qc1 35.Bf3+–) 35.Kf3 (better 35.Qb8 Kh7 36.Nc4 Nd7 37.Qc7 Nc5 38.Qc5 f6+–) 35...Ng4 36.Ke2 Kh8?? (36...Nf6 37.Qb8 Kh7+–) 37.d4 (37.Nc4 Kh7+–) 37...ed4 (37...Qg1 38.Kd3 Nf2 39.Kc2 Qg2 40.de5 Qe4 41.Qe4 Ne4 42.Rd8 Kh7+–) 38.Bd4 Nh2 (38...Ra8+–) 39.Qf8 (39.Qf8 Kh7 40.Qg7) 1–0. patrick317 – ledzepper, gameknot.com, 2019.

2.d4 b5 3.a4 e6 4.Bd2 (4.c3 ba4 5.Nf3 Bb7=) 4...Bd6 (4...ba4!? 5.Ra4 d5=) 5.ab5+= Nd5? (5...Bb7!?+=) 6.c3 (6.e4 Nb6+-) 6...0-0 (6...Nf6!?+/-) 7.e4+- Nb6 8.c4 c6? (better is 8...Qh4 9.c5 Qe4 10.Ne2 Be7 11.cb6 ab6+-) 9.c5 Bc7 (9...Be7 10.Qh5+-) 10.cb6 Bb6 11.Nf3 d6 12.Be2 Bb7 13.Qc1 d5?! 14.e5 f6 15.Be3 Nd7 16.bc6 Rc8 17.b5 f5 18.Qd2 Bc6 19.bc6 Rc6 20.0-0 Qc7 21.Na3 Rc8 22.Rac1 Nb8 23.Rc6 Nc6 24.Rc1 Ba5 25.Qc2 Bb6 26.Bb5 Nb4 27.Qc7 Rc7 28.Rc7 Bc7 29.Ng5 Bb8 30.Ne6 Kf7 31.Nd8 Ke7 32.Nc6 Nc6 33.Bc6 Ke6 34.Nc2 a5 35.Bd2 h6 36.Ba5 Be5 37.de5 Ke5 38.Bc3 Kd6 39.Be8 Ke7 40.Bh5 Kf8 41.f4 Ke7 42.Bg7 (42...Kd6 43.Nd4+-) 1-0. Pepito Centeno - dugmak, ChessWorld.net, 2004.

2.d4 Nd5 3.c3 c6 4.e4 Nb6 5.Nf3 h6 6.c4 d6 7.c5 dc5 8.bc5 N6d7 9.Nc3 e6 10.Bd3 Be7 11.Bf4 Bf6 12.Bd6 Nc5 13.Bc5 Qa5 14.Qb3 Na6 15.Bd6 c5 16.Bb5 Bd7 17.Bd7 Kd7 18.e5 cd4 19.Qb7 Ke8 20.Qa8 Kd7 21.Qa7 Nc7 22.Qa5 dc3 23.Qc7 Ke8 24.Qc8 Bd8 25.Qc6 1–0. marekt – nicolasroy, GameColony.com, 2002.

2.d4 Ne4 3.c4 (3.f3 Nf2 4.Kf2+–) 3...c5 4.e3 (4.dc5 e6 5.Qd4 Nc6+=) 4...e5 (better is 4...cb4!? 5.Bd3 d5=) 5.f3?? (better is 5.Bd3 Ng5 6.bc5+=) 5...Qh4-+ (5...Qh4 6.Ke2 Ng3 7.hg3 Qh1-+) 0–1. ScorpKA – jazzy82, internet, 2008.

2.d4 h6 3.Nc3 (3.Nf3 d5=) 3...e6 (3...e5 4.de5 Bb4 5.Bb2=) 4.Bf4? (better is 4.a3!?=) 4...a6 0–1. born4evil – verns2, internet, 2010.

2.e3 c6 (--> 1.b4 c6 2.e3 Nf6)

2.e3 Nd5 3.c4 (3.a3 a5=) 3...Nb4=+ 4.Ba3 (4.a3 N4c6=+) 4...N4c6 (4...e5 5.Nc3-/+) 5.d4=+ d5 (5...d6 6.Bd3=+) 6.c5 (better is 6.Nc3!? dc4 7.Bc4=) 6...e5 7.Nc3 ed4 8.Nd5?? (8.ed4 Be7=+) 8...de3 (better is 8...Qd5 9.Ne2 Bc5 10.Bc5 Qc5 11.ed4 Qd6-+) 9.fe3 (9.Ne3 Nd7-/+) 9...Qh4 (9...Nd7 10.Bb5-+) 10.g3 Qd8 11.Bb5 a6 12.Ba4 Be6 13.e4 Nd7 14.Rb1 Bc5 (better is 14...Rb8 15.Qc2 Nce5 16.Bd7 Qd7-/+ (< 16...Kd7 17.Bb2 Qg5 18.Be5 Qe5 19.Nf3+/–)) 15.Qb3?? Ba3 16.Qa3 b5 17.Nb4?? Nb4 18.Rb4 ba4 19.Ra4 Rb8 20.Ra6 Rb1 21.Kf2 Ne5 22.h3 Qd2 23.Ne2-+ Nd3 24.Kf3 Ne5 25.Kf2 Rh1 26.Ra8 Kd7 27.Ra5 Rh2 (28.Kg1 Re2 29.Qa4 Ke7 30.Qd7 Nd7 31.Rf5 Bf5 32.ef5 Qe1) 0–1. kleanitt – Derry, Caissa.com, 2004.

2.f3 a5 3.c3 ab4 4.cb4 b6 5.Bb2 d6 6.e4 c5 7.b5 Bd7 8.Nc3 e6 9.Nh3 Nh5 10.g3 g6 11.Be2 Bg7 12.Nf2 0-0 13.a4 Be8 14.Rb1 Nd7 15.f4 Qc7 16.Bh5 gh5 17.Qh5 Nf6 18.Qf3 h5 19.h3 c4 20.g4 hg4 21.hg4 Bd7 22.d4 cd3 23.Nd3 Qc4 24.e5 de5 25.Ne5 Qc7 26.Rc1 Qd8 27.g5 Nd5 28.Rd1 Nc3 29.Bc3 Ra7 30.Qh5 Re8 31.Qf7 1-0. patriss - tina1945 (1865), lichess.org, 2018.

2.f3 Nc6 3.c3 (3.b5 Ne5=) 3...e6 (3...d5 4.d4=+) 4.Bb2 (4.b5 Ne7=) 4...d5=+ 5.d4 b5 (5...a6!?=+) 6.e4= de4 7.Bb5 Bd7 8.a4 (8.fe4 a5=) 8...a6 (8...a5 9.ba5 Na5 10.Bc1=) 9.Bc4 ef3 (9...Nd5=) 10.gf3 (10.Nf3 Bc8+=) 10...g6 (10...Nh5 11.Qc2=+) 11.Nd2 Bd6 (11...Nd5 12.Qe2 Nf4 13.Qe4=+) 12.Nb3 (12.Qe2 Nh5=) 12...e5 (12...Nd5 13.Bd5 Qh4 14.Kf1 ed5 15.Qe1 Qe7 16.Qe7 Ne7 17.Nc5=+) 13.d5 Ne7 14.Nc5 The isolani on a6 becomes a target (14.Bc1 h6=) 14...Bc5=+ 15.bc5 Bf5 Black plans e4. Increases the pressure on d5 (15...Bc8 16.d6 Nf5 17.Bd3=+) 16.d6 cd6 (16...Nc8 17.Qe2 cd6 18.cd6-/+) 17.cd6 (17.Qd6 Qd6 18.cd6 Ned5=) 17...Nc6 18.Ba3 e4 19.Qe2 (19.Qb3 Qd7=) 19...0-0 20.0-0-0? (20.f4 Qa5 21.Qb2 Rab8-/+ (21...Qa4? 22.Bb4 Qa1 23.Qa1+-)) 20...Ne5 (20...Qa5 21.Qc2-+) 21.Bb3? (21.d7 Bd7 22.Bf8 Qf8 23.Rd4-+) 21...g5?? (better 21...Nd3 22.Kd2 ef3 23.Qf3 Nf2-+) 22.d7 (22.Qe3 Nd3 23.Kd2 ef3 24.Nf3 Nf2 25.Ng5 Nh1 26.Rh1 Bg6=) 22...Nfd7 23.Bf8 Qf8 24.fe4 (24.Bd5 Qa3 25.Kd2 ef3 26.Nf3-+) 24…Be6 (better 24...Qa3 25.Qb2 Qb2 26.Kb2 Be4-/+) 1-0. Delboy Smith (1700) – thesnarler, ChessWorld.net, 2011.

2.f3 d6 3.Bb2 Nbd7 4.d4 g6 (4...d5 5.e3=+) 5.e4= Bg7 6.a3 0-0 7.Bc4 Nb6 8.Bb3 Bd7 (8...d5 9.e5 Nh5 10.Ne2=) 9.c4 c6 10.g4 Be6 11.Nd2 Bh6 12.h4 (12.d5 cd5 13.cd5=) 12...Bg7 (better 12...Bd2 13.Qd2 Bc4-/+) 13.h5+= Qd7 (13...d5 14.c5 Nc8 15.Nh3+=) 14.h6 (14.d5!? cd5 15.cd5 Nfd5 16.Bg7 Kg7 17.ed5 Bd5 18.Bd5 Nd5+-) 14...Bh8+- 15.Ra2 (better 15.d5 cd5 16.cd5 Nfd5 17.Bh8 Kh8 18.ed5 Bd5 19.Bd5 Nd5 20.Ne4+-) 15...d5=+ 16.c5 Nc8 17.e5 Ne8 18.g5 (18.Ne2 f6=+) 18...Bf5 19.a4 f6 20.f4 fg5 21.fg5 Bg4 22.Ngf3 Bf3 (22...Rf5!?=+) 23.Nf3= Qg4 24.Rf1 Qg3 25.Kd2 (25.Ke2 Nc7=) 25...e6 (25...Nc7 26.Bc1=) 26.Kc1 Ne7 27.Bc3 Nf5 28.Bd2 (28.Rg1 Qf4 29.Bd2 Ne3+=) 28...Nc7 (28...a5 29.Bc2=) 29.Rg1 (29.Bc2 Qg4 30.Rg1 Ng3=+) 29...Qh3=+ 30.Qe2 Ng3 31.Qe3? (better 31.Qd3!?=+) 31...Nf1-+ 32.Qe2? (better 32.Rf1 Qf1 33.Bd1-+) 32...Qf3 (better 32...Rf3!? 33.Bc2 Raf8 34.Be1-+) 33.Qf3 Rf3 (33...Rf3 34.Bd1 Rf2-+) 0-1. Delboy Smith (1695) - altobelli (2000), ChessWorld.net, 2009.

2.f4 b6 3.Nf3 Bb7 4.e3 (4.a3 a5=+) 4...e6 5.a3 Be7 (5...a5 6.b5=) 6.Be2= 0-0 (6...a5 7.b5=) 7.0-0 d6 8.d3 (8.Bb2 a6=) 8...c5 9.e4 d5 10.e5 Nfd7 11.bc5 Nc5 (11...bc5 12.Nbd2=) 12.Nbd2 (12.d4 Ne4=) 12...Na4 13.Nb1 (13.Qe1 Nc3=) 13...Nc5 (13...d4 14.c4 Qd7 15.Qc2=+) 14.a4 (14.d4 Ne4=) 14...Nc6 (14...d4 15.c4=+) 15.Nbd2 Rc8 16.Bb2 Ba6 17.Nd4= Nd4 18.Bd4 Qc7 19.Ra2 Bb7 20.Qa1 a6 21.a5 b5 22.Bc5 Qc5 23.d4=+ Qc3 24.Qc3 Rc3 25.Nb3 Rfc8 26.Bd3 Bc6 27.Rf3 Bd7 28.Kf1 h6 29.Ke1 Bb4 30.Kd1 Kf8 31.g4 g6 32.h4 Kg7 33.Rg3 R3c6 34.Ra1 Be7 35.Rh3 R8c7 36.Ke2 Ra7 37.Rg1 Rc8 38.f5 Kh7 39.h5 gf5 40.gf5+= Bg5?? 41.fe6+– (41...Kg7 42.ed7 Rd7 43.Bf5+–) 1–0. Lesiak,Pawel – Knuetter,Helmut, Koeln CC Christmas op, 1993.

2.f4 d5 (--> 1.b4 d5 2.f4 Nf6).

2.f4 e6 3.a3 c5 4.Nf3 (4.bc5 Bc5 5.d4 Be7=+) 4...cb4 5.ab4 Bb4 6.Ra4 Nc6 7.c3 Be7 8.e4 d5 9.e5 Ne4 10.Bb5 (10.d3 Nc5 11.Ra1 0-0-/+) 10...Qb6 (10...Bd7 11.d3 Nc5 12.Bc6 Bc6 13.Rd4-/+) 11.Nd4 (11.Qe2 Bd7 12.c4 dc4 13.Qe4 Qb5-+) 11...0-0-+ 12.Bc6 bc6 13.Na3 (better is 13.Ra1-+) 13...Nc5 14.Nc6 (14.d3 Na4 15.Qa4-+) 14...Nd3 15.Ke2 Nc1 (15...Qc6 16.Kd3 Bc5 17.Ke2-+) 16.Qc1 Qc6 17.Ra5 Bd8 18.Rb5 Ba6 19.c4 (19.Qb1 Be7 20.Ke1 Ba3-+) 19...dc4 20.Rb4 (20.Rb1 Qg2 21.Ke3 Bb6 22.Rb6 ab6-+) 20...Qg2 (20...Be7 21.Rc4 Ba3 22.Kf2 Qb6 23.Rc5 Bc1 24.Rhc1-+) 21.Ke3 Bb6 22.Rb6 ab6 23.Rg1 Qh2 24.Rh1 (24.Rf1-+) 24...Qg3 25.Ke2 c3 26.Kd1 Bd3 27.Qc3 Rfc8 (28.Qd3 Qd3-+) 0–1. Walkhoefer – Springer,U, corr SOK–89–50, 1989.

2.g3 Nc6 3.b5 Ne5 (3...Na5 4.Nf3=) 4.d4 Ng6 5.h4 e6 6.h5 Ne7 7.h6 g6 8.Bg2 d5 9.Nf3 Bd7 10.Ne5 (10.Qd3 a6 11.ba6 Ra6=) 10...Nf5 (10...Bb5!? 11.c4 Ba6=) 11.c4+= Bb4 12.Kf1 0-0 (12...c6 13.g4 Ne7 14.Bg5+=) 13.g4+/– (13.Nd7?! Qd7 14.Qa4 Be7=) 13...Ne7 (13...Nd6 14. 17.Bf6+/–) 14.Qb3 Bd6 15.Nd7 Nd7 (15...Qd7!? 16.c5 Ng4 17.cd6 cd6+/–) 16.c5+– (16.cd5?! ed5 17.Bd5 Nd5 18.Qd5 Rb8+=) 16...Nc5 (16...Bc5 17.dc5 c6 18.a4+–) 17.dc5 Bc5?? (better is Qa4 a5 15.Bg5 (< 15.Nd7 Nd7 16.a3 Nb6+=) 15...Nc4 16.Nd7 Qd7 17...Be5 18.Bb2 Bb2 19.Qb2 f6+–) 18.Qc3 Qd6 (18...f6 19.Qc5 a6+–) 19.Qg7 1–0. pierre (2065) – tomzr, internet, 2006.

2.g3 d6 3.Nf3 Nbd7 4.Bg2 e5 5.0-0 e4 6.e3?? (better 6.Nd4=) 6...ef3-+ 7.Bf3 d5 8.Re1 (8.a3 a5-+) 8...h5 (8...Bb4 9.Bb2-+) 9.Bg2 (9.e4 de4 10.Be4 Be7-+) 9...h4 (better 9...Bb4 10.a3 Be7 11.Bb2-+) 10.f3 (10.e4 de4 11.Be4-+) 10...hg3 11.hg3 Bd6 12.Nc3 (12.f4 Bb4 13.e4 de4 14.Be4 Kf8-+) 12...Bg3 (worse 12...Bb4 13.e4 d4 14.e5-+) 13.Nd5 (13.Re2-+) 13...Nd5 (13...Be1 14.Nc7 Qc7 15.Qe1 Qc2 16.d4-+) 14.f4 (14.Re2 Nb4 15.Bb2 Nf6-+) 14...Qh4 15.Qf3 (15.Re2 N7f6 16.Kf1 Ng4 17.Bd5 Bf2-+) 15...Be1 16.Qd5 Qf2 0-1. MR_PRINCEs_PEKKA (1995) - opperwezen (2490), lichess.org, 2021.

2.g3 h5 3.Nf3= b6 (3...d5 4.Bb2=) 4.Bg2 d5 5.c4 (5.0-0 e6=) 5...a5 (5...c6 6.d4=) 6.b5 dc4 7.Ne5 Ra7 (7...Qd4!? 8.Ba8 Ng4 9.Ng4 Qa1=) 8.Qc2+= Qd4 (8...e6 9.Qc4 Bb7 10.Bb7 Rb7 11.d4+=) 9.Bb2+/– Qc5 10.Na3 Be6 (10...Ng4 11.Ng4 hg4 12.Qc4+=) 11.Nac4 Bc4 12.Qc4 e6 13.Qd3 Qd6 14.Bd4 c5 15.bc6+– h4 16.Nc4 Qd8 17.Bb6 Qd3 18.ed3 (18...Nd5 19.Ba7 Nc6 20.Be3+–) 1–0. pierre – revanchist, ChessHere.com, 2006.

2.g4 h6 3.g5 (3.h3!?=+) 3...hg5-/+ 4.b5 c5 (4...d5 5.d4-/+) 5.Bb2 e6 6.a4 (6.e3 d5-/+) 6...Rh6 (6...d5 7.e3-+) 7.h4 (7.e3 d5-/+) 7...Nh7 (7...gh4!? 8.Nf3-+) 8.e4 (8.h5!?-/+) 8...f6 0–1. supertimchan (2100) – mgokhale (1795), net–chess.com, 2009.

2.h3 d5 3.Bb2 (--> 1.b4 d5 2.Bb2 Nf6 3.h3).

3.h3 Bd7 4.Nf3 a5 5.Bd2 ab4 6.Bb4 Nc6 7.Bd2 g6 (7...e6 8.e3+=) 8.Nc3 Bg7 9.Bf4 0-0 10.Ne5 Be8 11.e3 Nh5 12.Nc6 Bc6 13.Qf3? (better is 13.Bh2=) 13...Nf4-+ 14.ef4 (14.Qf4 e5! 15.Qg4 ed4 16.ed4 Re8 17.Ne2 Re4-+) 14...Bd4 15.Be2?? (15.a3-+) 15...Ra3 16.0-0 Bc3 17.Rab1 d4 18.Qg4 Bd7 (18...Ra2 19.f5 Qd5 20.Bd3-+) 19.Qf3 Bc6 20.Qg4 Qd7 (better is 20...Ra2 21.Bd3-+) 21.Qd7 Bd7 22.Bc4 (22.Rb7 Ra2 23.Rc7 Rd8-+ (23...Rc2?! 24.Bd1 Ba4 25.Ra7-+)) 22...Bf5 (better is 22...Rb8!? 23.Rfd1-+) 23.Rb7 Bc2 24.Rc7 d3 25.Bb3 Ba5 (25...Bb3?! 26.Rc3 Ra2 27.Rb3-+) 26.Bc2 (26.Re7 Bb3 27.ab3 Rb3 28.Rd7-+) 26...Bc7 27.Bd1 (27.Bb3 Bf4 28.g3 Bc7-+) 27...Bf4 (27...Ra2 28.Bb3 Ra3 29.Bc4-+) 28.Re1 (28.g3 Bd6 29.Bb3 Rd8-+) 28...Ra2 29.g3 Bd6 30.Re3 d2 (better is 30...Bc5 31.Rd3 Rf2 32.Rc3 Rc2 33.Rc5 Rc5 34.Kf2-+) 31.Kg2 (31.Kf1 Rfa8 32.Ke2 Kg7-+) 31...Ra1 32.Be2 d1Q 33.Bd1 Rd1 34.f4 (34.Kf3 Rb8 35.Re2 Rg1-+) 34...Rc8 35.Kf3 f5 (35...f5 36.Rb3 Rc2-+) 0–1. nando (2115) – sbeaul (2470), net–chess.com, 2016.

2.h3 Nh5 3.g4 Nf4 4.c3 d5 5.e3 Ne6 6.a4 g5 7.Bg2 c6 8.b5 f6 9.d3 h6 10.c4 (10.h4=) 10...b6 (10...dc4!? 11.Be4 cd3 12.Bd3 Kf7=+) 11.Bb2 (11.bc6 dc4 12.c7 Nc7 13.dc4 Nba6+/–) 11...a6 (11...dc4 12.dc4 Qd1 13.Kd1 h5+=) 12.f4 (better is 12.bc6 dc4 13.c7 Nc7 14.Ba8 Na8 15.Qf3+/–) 12...Nd7?? (12...dc4 13.bc6 Qd3 14.Qd3 cd3=) 13.bc6 Ndc5 14.cd5 Ng7 15.d4 e6 16.d6! Bd6 17.dc5 Bc5 18.Ra3 Qc7 19.Ne2 Qc6 20.Bc6 Kf8 21.Ba8 e5 22.Qd8 Kf7 23.Qh8 Ne6 24.Qc8 Ng7 25.Qa6 ef4 26.ef4 f5 27.Qa7 Ke8 28.Qg7 (28...Be7 29.Bf6 Bb4 30.Kd1 Ba3 31.Bc6; 28.Bc6 Kd8 29.Qd7) 1–0. Mueller,Wolfgang (1800) – Ulrich,Natalie (1800), remoteschach.de, 2006.

2.Nh3 d6 3.f3 (3.d4 Bh3 4.gh3 d5=+) 3...c5 (3...Bh3 4.gh3 e6 5.c3-/+) 4.b5 (4.bc5 Bh3 5.gh3 dc5=+) 4...b6 (4...Bh3 5.gh3 d5 6.e3-/+) 5.a4 (5.Nf2 e6=) 5...e5 (better 5...Bh3 6.gh3 e5=+) 6.e4? (6.Nf2 Be7=+) 6...Be7 (better 6...Bh3!? 7.gh3 Ne4-+) 7.c4 (7.Nf2 0-0=+) 7...Bh3 8.gh3 0-0 9.Qe2 (9.Bg2-/+) 9...d5 (better 9...Nh5!?-/+) 10.ed5 a6 11.Bb2 ab5 12.ab5 Bd6?? (12...Ra1 13.Ba1 Re8 14.d3= (14.Qe5?? Bd6 15.Qe8 Ne8-+)) 13.Bg2 (13.Ra8 Nh5+–) 13...Re8?? Black prepares e4 (13...Ra1 14.Ba1 Nh5 15.Bf1=+ (15.Be5?? Re8 16.Bd6 Re2 17.Ke2 Qd6-+)) 14.0-0 (better 14.Ra8 Nh5 15.Rg1 Nf4+–) 14...e4?? (better 14...Ra1 15.Ba1 Nh5=) 15.Ra8+– ef3 16.Qf3 Qc7 (16...Be5 17.Be5 Re5 18.Qg3+–) 17.Ra3 (better 17.Bf6 Bh2 18.Kh1 gf6+–) 17...Bh2 18.Kh1 Be5 19.Be5 Qe5 20.Nc3 (20.Re3 Qc7+–) 20...Qd4 (20...Nbd7 21.Qf4+–) 21.d3 Re3 (21...Rf8 22.Ne4 Nfd7 23.Qf2+–) 22.Qd1 (better 22.Ra8 Re8 23.Ne4 Qe5 24.Nf6 gf6 25.Qf6 Qf6 26.Rf6 Kg7 27.Rb6 Nd7 28.Re8 Nb6+–) 22...Rd3 23.Qb3 (23.Ra8 Nfd7 24.Qe1 Re3+–) 23...h5 24.Rc1 (24.Re1 Nbd7+–) 24...Nbd7 (24...Ne4 25.Ne4 Rb3 26.Rb3 f5+–) 25.Ra8 Nf8 26.Rb8 (better 26.Qb2!? Rd2 27.Qb1 Ng4+–) 26...Qe5 (26...Qe3 27.Qb2 Rd2+–) 27.Rb6 (better 27.Qc2!? Qe3 28.Na4 Ne4 29.Nb6 f5+–) 27...Qe3? (27...Ne4 A) 28.Be4 Rh3 29.Kg1 Qh2 30.Kf1 Qf4 31.Kg1 Qc1 32.Qd1 Qe3 (32...Rc3?! 33.Qc1 Rc1 34.Kf2-+) 33.Kf1 Qf4 (33...Qc3?! 34.Ra6-+) 34.Kg1 Rc3-+; B) 28.Ne4?! Rb3 29.Re1 Qf4=; C) 28.Qb2 Rd2 C1) worse 29.Ne4 Qb2 30.Rg1 Rg2 31.Nf6 Kh8 32.Rg2 Qc1 33.Kh2 Qf4 (33...gf6?! 34.Rf6 Qc4 35.Rf7=+) 34.Kg1 gf6-+; C2) 29.Qd2 Nd2 30.Ra6=) 28.Qc2 (28.Qb1!? Rc3 29.Rc3 Qc3+–) 28...Rd2 29.Qf5 Rf2 30.Qb1?? (better 30.Qf2! Qf2 31.Ra6+–) 30...Qg3-+ 31.Rg1 Ng4! 32.hg4 (32.Qh7 Nh7 33.Rb8 Nf8 34.Rf8 Kf8 35.hg4 Qh4 36.Bh3 Qh3) 32...hg4 (32...Qh4 33.Bh3 Qh3) 33.Rf1 (33.Qd3 Qd3 34.Ne4-+) 33…Qg2 0–1. lindsey000 – bigfoot57, gameknot.com, 2017.

2.Nh3 e5-/+ 3.Nc3 (better is 3.Bb2!?-/+) 3...Bb4-+ 4.a3 Be7 (4...Bc3 5.dc3 d5 6.Qd3-+) 5.f4 e4 6.e3 d5 7.Nf2 0-0 8.Be2 c5 9.0-0 Nc6 10.Rb1 Rb8 11.d3 ed3 12.Qd3 d4 13.Nce4 Nd5 14.c4 dc3! 15.Rd1 (15.Nc3 Nc3 Combination) 15...Be6 16.Qc2 Qc7 (better is 16...Bh4!? 17.Bc4 Bf2 18.Qf2 Nce7 19.Nc5 Qc7 20.Ne6 fe6-/+) 17.f5+= Bf5 18.Rd5 Bg6 (18...Be6!? 19.Rd1 Qe5+/–) 19.Qc3+– Bf6? (better is 19...Qa5 20.Qa5 Na5+–) 20.Nf6 gf6 21.Ng4 Bb1 (21...Qa5 22.Qf6 Rfd8+–) 22.Rg5!! Bg6 (22...fg5 23.Nh6) 23.Nh6 Kg7 24.Nf5 Kh8 25.Qf6 (25.Qf6 Kg8 26.Qg7) 1–0. Heini – chessenemy, internet, 2016.

3.Bb2 d6 4.e3 Nbd7 5.Nf3 g6 (5...e5 6.Be2=) 6.g4 (6.Be2 Bg7=) 6...Bg7 7.g5 Nh5 8.Bg7 Ng7 9.h4 e5 10.d4 c6 (10...h6 11.Rg1=+) 11.Nbd2 Nf8?? (better 11...0-0=) 12.Ne4+- Qe7? (better 12...Bf5 13.Nf6 Ke7+-) 13.de5 d5 14.Nf6 Kd8 15.Bd3 (15.c4 Be6+-) 15...Bf5? (better 15...Kc7+-) 16.c4 Kc7 (16...Nd7 17.cd5 Rc8 18.e6 Nf6 19.gf6 Qf6 20.Bf5 Nf5 21.dc6 Ke8 22.Qd7 Kf8 23.Qc8 Kg7 24.cb7 Qa1 25.Ke2 Qb2 26.Kf1 Rc8 27.bc8Q+- (27.bc8R?! fe6 28.Rc7 Kf6+=)) 17.cd5 Bd3 (17...Qd8+-) 18.d6 (18.d6 Kd8 19.de7 Ke7 20.Qd3+-) 1-0. black_bishop_88 (2555) - bvulle (1935), Hourly Bullet Arena, lichess.org, 2020. (=1.a3 Nf6 2.b4)

3.Bb2 g6 4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 a6).

3.e3 e5 4.Bb5 a6 5.Be2 Bd6 6.Bb2 Bb7 7.Nf3 Ne4 8.0-0 (8.Be5 Be5 9.Ne5 Qf6-+) 8...0-0 9.Be5 (9.Ne5 Qh4+–) 9...Qe7 (9...Be5 10.Ne5 d6 11.Nc4+–) 10.Bd6 Nd6 11.d3 Nc6 12.d4 Ne4 13.Nfd2 Nd2 14.Nd2 d5 15.Nf3 Qf6 16.c3 Na7 17.a4 c5? (17...Bc8+–) 18.bc5 Nc6 19.Qb3 Rab8 (19...Na5 20.Qb6 Qb6 21.cb6+–) 20.Qd5 Na5 21.Qg5 Qe6 22.Rab1 Nc4 (22...Nb3 23.Qg3 Bd5 24.Ng5+–) 23.Bc4 Qc4 24.Ne5 Qc3 25.Nd7 Bg2 26.Qg2 Rb1 27.Rb1 Rd8 28.Ne5 Qc2 29.Rf1 g6 30.Qg5 Rf8 31.c6 Qa4 32.Qe7 Qc2 33.Nd7 Rc8 34.Nf6 Kg7 35.Ne8 Kh6 36.Qf8 Kh5+– 37.Nf6 Kg5 38.Qc8 Kf6 39.c7 a5 40.Qd8 Kg7 41.c8Q Qf5 42.Qf5 gf5 43.Qa5 Kg6 44.Kg2 h5 45.Rg1 h4 46.Kh3 Kf6 47.Qb6 Ke7 48.Qc5 Ke6 49.Qe5 Kd7 50.Qf5 (50...Kd6 51.Qf7 Kc6 52.Qe6 Kc7 53.Rg7 Kd8 54.Qd7; 50.Ra1 Kc6 51.Ra7 f4 52.Qc5) 1–0. Anden – PeakOil, Caissa.com, 2004.

3.e4 Ne4 4.Bb5 e6 (4...Ba6 5.Ba6 Na6 6.Qe2 Nb4 7.ab4+–) 5.Nf3 (5.d3 Qf6 6.Be3 Nd6-+ (6...Qa1?! 7.de4 Qe5 8.Qd3-/+)) 5...a5 (5...Ba6 6.Ba6 Na6 7.Qe2+–) 6.Bd3 (6.d3 Qf6 7.Ra2 c6+=) 6...Nf6 (6...Bb7 7.Bb2=) 7.b5 d5 (7...Bb7 8.0-0=) 8.c4 (8.0-0 Bd6+=) 8...Nbd7 (8...dc4 9.Bc4 Bd6 10.0-0=) 9.Bb2 Bb7 (9...dc4 10.Bc4 Bd6 11.0-0=) 10.Nc3 (10.0-0 dc4 11.Bc4 Bd6+=) 10...Nc5 11.Bf1 (11.Be2 d4 12.Na4 d3=+) 11...dc4 (11...d4 12.Na2=) 12.Bc4 Nd3 13.Bd3 Qd3 14.Qe2 (14.Ne5 Qd6 15.Nc4 Qf4=+) 14...Qg6 (14...Qe2 15.Ke2 Rd8 16.Rad1=) 15.Rg1 (15.0-0 Qg4=) 15...Bd6 16.h3 (16.Ne5 Qf5 17.Nc6 Bh2=+) 16...0-0=+ 17.Ne5 Qf5 18.d4 (18.Nc6 Bc6 19.bc6 Rfb8=+) 18...Nd5-/+ 19.g4 (19.Nd5 Bd5 20.Nc6 Qf6=+) 19...Qf4 20.Nd5 Bd5 21.Rg3 (21.Nc6 Qh2 22.Qf1 Bc4-/+) 21...a4 22.Rd1 Rfb8 23.Nd7 Rd8 24.Nc5 Qg5 25.Rc3 Ra5 26.Re3 Rb8 27.Nd7 Rb7 28.Nc5 Rb8?? 29.Nd7= Rb7?? (29...Rbb5 30.Bc3 Bb3 31.Ba5 Bd1 32.Re6 Be7 33.Re7 g6 34.Re8 Kg7 35.Rg8 Kh6+–) ½–½. Baer,Werner – Fournier,Frederic, TT–06 TSC, 2003.

3.Bb2 a5 4.c3 ab4 5.cb4 e6 6.Nf3 Nc6 7.g3 f6 8.Bg2 e5 9.0-0 b6 (9...Nb6 10.b5 Na5 11.d3=) 10.e4 (better is 10.Nh4!? Nde7 11.b5+–) 10...Nde7+= 11.Qb3 Ba6 12.Re1 d5 13.d4 Bc4 14.Qc2 ed4 15.Nd4 Nd4 16.Bd4 de4?? (better is 16...b5!?+/–) 17.Qe4 (better is 17.Qc4 f5 18.f3 Qd7 19.fe4 b5+–) 17...Qd5?? (17...Kf7 18.Nc3 c6 19.Bf6 b5 20.Be7 Be7 21.Qf5 Bf6 22.Bc6 Qc8 23.Qh5 g6+–) 18.Qd5 Bd5 19.Bd5 Rd8 20.Nc3 c6 21.Bc6 Kf7 22.Bb6 Rd6 23.Bd5! Nd5 24.Nd5 Rd5 25.a4 Bb4+/– 26.Reb1 Bc5 27.Bc5+– Rc5 28.a5 Ra8 29.a6 Rc6 30.Rb7 Kg6 31.a7 h5 32.Rb8 Rc8 33.Rc8 Rc8 34.a8Q Ra8 35.Ra8 f5 36.Ra6 (36.Ra6 Kf7 37.Kg2+–) 1–0. golfx – gramy09, kurnik, 2011.

3.Bb2 Nb6 4.g3 Nc4 5.Bc1 Nc6 6.d3 N4e5 7.Bb2 Ng4 8.Nd2 e5 9.Bg2 Nd4? (9...d6 10.Ngf3=) 10.Ngf3 (better is 10.e3!? Ne3 11.fe3+–) 10...d6 11.Nd4 ed4 12.Bd4 c5 13.bc5 dc5 14.Bc3 b5?? (14...Rb8 15.Rb1+/–) 15.0-0 b4? 16.ab4 cb4 17.Bb2 Qb6?? 18.Ba8 Bb7 19.Bb7 Qb7 20.e4 Bc5 21.Qg4 0-0 22.Qg7# 1–0. golfx – jeyje, kurnik, 2012.

3.Bb2 f6 4.d3 d6 5.Nd2 Bf5?? (5...Nb6 6.e4=) 6.g3 (6.e4!? Be6 7.ed5 Bd5 8.Qh5 Bf7 9.Qb5 Nd7 10.Qb7 e5+–) 6...c6? (better is 6...Nb6=) 7.e4+– Nb4 8.ab4 Bg6 9.Bg2 Qd7 10.Ne2 Qe6 11.0-0 h5 12.Nf4 Qg4 13.Qg4 hg4 14.Ng6 Rh6 15.Nf8 Kf8 16.Bd4 Kf7 17.Ra7 Ra7 18.Ba7 Na6 19.c3 Rh5 20.Ra1 Nc7 21.Bb8 Ne6 22.Ra7 b5 23.Ra6 c5 24.bc5 dc5 25.Ra5 b4 26.cb4 Rh8 27.Ba7 cb4 28.Rb5 Rd8 29.Bf1 Rd4 30.Nc4 Rd7 31.Be3 Nd4 32.Bd4 Rd4 33.Rb4 Kg6 34.Be2 Kg5 35.Rb5 e5 36.Ne5! fe5 37.Re5 Kf6 38.Rf5 Ke6 39.Rg5 Kf6 40.Rg4 Rd7 41.h4 g6 42.Rg5 Ra7 43.g4 Ra2 44.Kf1 Ra1 45.Kg2 Ra2 46.Kf3 Ra1 47.h5 Kg5 48.hg6 Kg6 49.Ke3 Re1 50.f4 Kf6 51.g5 Kg6 52.Kd2 Rh1 53.Kc3 Rh2 54.Bd1 Rh3 55.Kd4 Rh1 56.Bb3 Ra1 57.Bc4 1–0. golfx – gramy09, kurnik, 2011.

3.Bb2 f6 4.d3 e5 5.Nd2 Ne7 6.Ngf3 c6 7.g3 d5 8.Bg2 Be6 9.0-0 Nd7 10.c4 Ng6 11.cd5 cd5 12.e4 d4 13.Nc4 Rc8 14.Rc1 b6 15.Qa4 Be7 16.Qa7 0-0 17.Qa4 Ra8 18.Qd1 b5 19.Na5 Rc8 20.Rc8 Qc8 21.Qc1 Qa8 22.Qc6 Bg4? 23.Qa8 Ra8+/– 24.Rc1 Bf3 25.Bf3 Kf7 26.Rc6 Ke8 27.Bg4 Kd8 28.Rc2 Rc8?? 29.Rc8 Kc8 30.h4 Kc7 31.h5 Ngf8 32.f4 g6 33.fe5 fe5 34.Bd7 Kd7 35.hg6 hg6 36.Kg2 Ne6 37.Kh3 g5 38.Kg4 Kd6 39.Kf5 Nf4?? 40.gf4 gf4 41.Bc1 f3 42.Nb3 Bh4 43.Kg4 f2 44.Nd2 Bd8 45.Kg3 Bg5 46.Kf2 Bh6 47.Nb3 Bg7 0–1. golfx – ninomadhi, kurnik, 2012.

3.Nc3 e5-/+ 4.e3 e4 (4...a5!? 5.Nce2 ab4-+) 5.Qc1=+ c6 6.b5 Ba3 (6...c5 7.Nge2=+) 7.Qa3= Be6 8.Rb1 Qd7 9.b6 a6 10.Na4 Bg4 11.c4 Qc8 12.Qc5 Nbd7 13.Qd4 (13.Qd6 Be6=+) 13...c5-/+ 14.Nc5? (better is 14.Qb2 Qc6 15.Nc3 dc4 16.Bc4-/+) 14...Qc5-+ 15.Ne2 (15.Qc5 Nc5 16.cd5 Nd5-+) 15...dc4 16.Qc3 (16.Qc5 Nc5 17.Nd4 Nd3 18.Bd3 ed3-+) 16...Nb6 17.Qb2 Be2 18.Be2 Qb5 (18...Nbd7 19.Qb7 0-0 20.Qb2-+) 19.Qc2 Qc6 20.0-0 (20.Qb2 Nc8-+) 20...Rd8 21.f3 Qd6 22.fe4 Qd2 23.Qd1 Qe3 24.Rf2 Rd1 25.Bd1 Ne4 26.Rbb2 Qd4 27.Bh5 g6 28.Bf3 c3 29.Rbe2 f5 30.g4 Kf8 31.Be4 Nd5 32.Kf1 Ne3 33.Re3 Qe3 34.Bc2 f4 35.Kg2 g5 36.Bb3 h5 37.Be6 Qe6 38.Rc2 Qe3 39.gh5 Qe4 40.Kh3 Qc2 41.Kg4-+ Qh2 42.Kf5 c2 43.Kf6 c1Q 44.Kg6 f3 45.h6 f2 46.h7 Qd6 47.Kf5 Qcf4 0–1. Peetz,Martin – Wiegers,Joachim, remoteschach.de, 2003.

3.d4 Bf5 4.e3 e6 5.Bd3 Nc6 (5...Bd3 6.Qd3 c6 7.Nf3=+) 6.b5 (6.Bf5 ef5 7.b5 Ba3 8.Na3 Ne7=) 6...Ba3=+ 7.Na3 Ne7 8.Nf3 Qd6 9.Qc1 Bd3 10.cd3 0-0 11.0-0 Rac8 12.Ne5 c5 13.Qb2 (13.bc6!? Nc6 14.Qb2=) 13...cd4-/+ 14.ed4 Nf5 15.Rac1 Rc1 (15...Nd4 16.Qd4 Qa3 17.Qe3-/+) 16.Rc1 Nd4! 17.Qd4 Qa3 18.Rc2 (18.Qa1!?-/+) 18...Qa5-+ 19.Rc1 Qb5 (19...Qa2 20.h3-+) 20.Qa7-/+ Qb2 21.Qc5?? (better 21.Re1-+) 21…Qe5 0-1. ChessEncore (1750) - Adjailton (1740), 2018.

3.Nf3 Bf5=+.

3.b5 Ba3 4.Na3 d5 5.c4 0-0 6.cd5 (6.Nf3 e5=+) 6...ed5 7.e3 c5 (7...Re8 8.Nf3=+) 8.bc6 Nc6 9.Nb5 (9.Nf3 Bg4=+) 9...a6-/+ 10.Na3 (10.Qa4 Be6 11.Nd4 Ne4-/+) 10...Bf5 11.Be2 (11.Nf3 Rc8-/+) 11...d4 12.ed4 (12.Bf3 Qe7 13.Bc6 bc6-/+) 12...Qd4 (better is 12...Nd4 13.Rc1 Qd5-+) 13.Nc2?? Qe4 14.Nf3?? Rfe8 15.Ne3=+. pinecrest1981 – benjamin73f, caissa.com, 2006.

3.d4 a5 4.b5 Ba3 5.Na3 b6 (5...Qe7 6.Qc1=+) 6.e3= Bb7 7.Nf3 Ne4 (7...Qe7 8.Nc4=) 8.Bd3 (8.c4 0-0=) 8...Nc3 9.Qd2 Ne4 10.Be4 Be4 11.Qe2 d6 (11...Qf6 12.c4=) 12.Rc1 Nd7 13.0-0 Qe7 14.Nd2 Bg6 15.Nab1 e5 16.a4 (16.Nc3 Nf6=) 16...ed4 17.Rfe1 (better 17.Qf3!? 0-0 18.ed4=) 17...de3-/+ 18.Qe3 Qe3 19.Re3 Kd8 20.Nf3 Re8 21.Re8 Ke8 22.h3 Kf8 23.Nc3 Nf6 24.Rd1 (24.Kf1!?-/+) 24...Bc2-+ 25.Rd2 Bb3 26.Nd4 Bc4 27.Nc6 Re8 28.Kh2 Ne4 29.Ne4 Re4 30.f3 (30.Rd4 f5 31.Kg3 Bb3-+) 30...Re2 (30...Re1 31.Rd4 Bb3 32.Nb8-+) 31.Rd4 d5 32.Kg3 Ra2 33.Kf4 (33.Ne5 Ra4 34.Nc4 Rc4 35.Rd5 Ke7 36.Re5 Kd6-+) 33...Rg2 (33...Ra4 34.Na7-+) 34.Ke5 (34.Ne5 Ra2 35.Nc4 Ra4 (35...dc4?! 36.Rc4 Ke8 37.Ke3-+) 36.Rd5 Rc4 37.Ke3 Ke7 38.Re5 Kd6-+) 34...f6 35.Ke6 Re2 (better 35...Ke8-+) 36.Kd7-/+ Re3 37.Kc7 Rf3 (37...Ra3 38.Kb6 Ra4 39.Kc5-/+) 38.Kb6=+ Bb5?? (better 38...Rh3 39.Kc7 Ra3=) 39.Kb5 (39.ab5 Ra3+-) 39...Rb3 (39...Rh3!? 40.Kc5 g5+/-) 40.Ka5 g5 (40...Rh3 41.Kb6 Rb3 42.Nb4+-) 41.Rd5 (41.h4!? h5+-) 41...Kf7 42.Nb4 (better 42.Rd7 Kg6 43.Rd6 Rh3 44.Ne7 Kf7 45.Nd5+/-) 42...Kg6? (42...Rh3!? 43.Kb6 Rb3+/-) 43.Kb5 (43.Rd3 Rd3 44.Nd3 f5+-) 43...h5? (better 43...Rh3 44.a5 Ra3+-) 44.a5 Ra3 (44...Rh3 45.a6 Ra3 46.Kb6+-) 45.a6 g4 46.hg4 hg4 47.Rd1 (47.Kb6 g3 48.a7 Ra7 49.Ka7 f5+-) 47...f5 48.Rg1 (48.Nc6 f4+-) 48...Kg5 49.Nd5 (better 49.Nc6+-) 49...f4+/- 50.Rf1 Rb3?? (50...f3 51.Kb6 g3 52.a7=) 51.Kc4 (better 51.Ka4 Rb2 52.Ra1+-) 51...Ra3+/- 52.Nf4 (better 52.Nc7 g3 53.Kb4+/-) 52...Ra2?? (52...Ra6 53.Ne2=) 53.Nd5 (53.Ne6 Kh4 54.Rh1 Kg3+-) 53...Kh4?? (better 53...Ra6 54.Nc3 Kh4=) 54.Kb5 Rh2 (54...g3 55.Rf7 Kh5+-) 55.Rg1 (better 55.Ra1!? Rb2 56.Kc4 Rb8+-) 55...g3 56.Nf4 (better 56.Ra1 Rb2 57.Kc4 Rb8+-) 56...Kg4 57.Ng2 1-0. PetLot (2050) - universe64 (2205), lichess.org, 2017.

3.d4 Be7 4.b5 (4.Nf3 a6=) 4...0-0 (4...Ba3 5.Na3 c5 6.c3-/+) 5.Be7=+ Qe7 6.e3 Re8 7.Nf3 Qf8 8.Bd3 c6 9.c3 d5 10.Qc2 cb5 11.Ng5 (11.Bb5 Bd7 12.Bd3 Nc6=) 11...g6 (11...h6 12.Nf3=+) 12.Nf3 (12.Bb5 Bd7 13.Be2 Nc6=) 12...a6=+ 13.a3 Nc6 14.Nbd2 Na5 15.e4 Nc4 Attacking the isolated pawn on a3 (15...de4 16.Ne4 Ne4 17.Be4=+) 16.Bc4 (16.e5 Nh5 (worse 16...Na3 17.Qa2+/-) 17.a4 Bd7=) 16...dc4 (16...bc4 17.0-0=+) 17.e5 Nd7 (17...Nd5 18.0-0=) 18.0-0 Nb6 19.Ng5 Nd5 20.h4 (20.a4!? f6 21.ef6 Qf6 22.Nge4+=) 20...Qe7 21.h5?? (better 21.a4 Bd7 22.Nde4=+) 21...Qg5-+ 22.hg6 hg6 23.Nf3 (23.Ne4 Qf5-+) 23...Qf5 24.Rfe1 (24.Qf5 ef5 25.Rac1-+) 24…Qc2 0-1. PetLot (2065) - zsolti_83 (2400), Rated Bullet game, lichess.org, 2017.

3.Nf3 d5 4.e3 a5 5.c3 ab4 6.cb4 Nc6 (6...Bd6 7.Qb3-/+) 7.Bb5 Bd7 8.Qb3 Bd6 (8...Ne5 9.Bd7 Nfd7 10.Ne5 Ne5 11.Bb2=+) 9.0-0 (9.Bc6 bc6 10.d4 0-0=) 9...h6 (9...Ne5!? 10.Bd7 Nfd7 11.Ne5 Ne5=+) 10.Bc6= Bc6 11.d4 (better 11.b5!? Bd7 12.Bd6 cd6 13.Nc3=) 11...Bb5-/+ 12.Re1 Ba4 13.Qd3 Qd7 14.Nc3 Ne4 (14...Bc6 15.Bb2 Bb4 16.Ne5=+) 15.Ne4 (better 15.Ne5 Be5 16.de5 Nc3 17.Qc3=) 15...Bb5?? (better 15...de4 16.Qe4 Bc6=+) 16.Qb1?? (better 16.Nd6 cd6 17.Qc3+-) 16...de4-+ (16...Ra3 17.Nc5 Qc8 18.Qb2+=) 17.Qe4 Bc6?? (17...f5!? 18.Qc2 Ra3 19.Ne5 Be5 20.de5-+) 18.Qg4 (18.Qd3 Bf3 19.gf3 Qa4=+) 18...0-0 (18...Ra3 19.Qg7 Rf8 20.Ne5 Be5 21.Qe5-+) 19.Ne5 (better 19.Bb2!? f5 20.Qh5=) 19...Be5-/+ 20.de5? (better 20.b5 Ra3 21.bc6 Bh2 22.Kh2 Qc6 23.Rec1-/+) 20...Ra3-+ 21.Red1 Ra4 (better 21...Qe7-+) 22.Rd7+- Bd7 23.Qc4 Bc6 24.a3 Raa8? (better 24...Rfa8+-) 25.b5 Bd5 (25...Be8 26.Qc7 Bb5 27.Qb7+-) 26.Qc7 (26.Qc2 Rfd8+-) 26...Rac8 (26...Rfc8 27.Qd6+-) 27.Qa5 Rc5 28.Qb4 (28.f3!? Rfc8+-) 28...Rfc8 29.h3 Rc1 (29...Rc2 30.Qd6+-) 30.Rc1 Rc1 31.Kh2 Rc2 32.Kg3 Rc1 (32...Rc4 33.Qe7 Re4 34.Qe8 Kh7 35.Qf7 Re5 36.h4+-) 33.e4 (better 33.f3 Rc8+-) 33...Rc4 34.Qe7 (34.ed5?! Rb4 35.ab4 ed5+=) 34...Re4 35.f4 (35.Qe8 Kh7 36.Qf7 Re5+-) 35...Kh7? (better 35...Re2 36.Qe8 Kh7 37.Qf7 Rg2 38.Kh4 Rf2+-) 36.Qf7 Re3 37.Kg4 (37.Kf2!? Ra3 38.g4 Rf3 39.Ke2 Rh3+-) 37...Bg2 38.Kh5?? (38.f5 Re5 39.Qg6 Kg8 40.Qe8 Kh7 41.fe6 Rg5 42.Kh4 Bf1+-) 38...Rg3?? (better 38...Bh3 39.Qg6 Kg8 40.Qe8 Kh7 41.Qg6 Kg8 42.Qe8 Kh7 43.Qg6=) 39.Qe6+- Bh3 40.Qa2?? (40.Qf7 Ra3 41.Kh4+- (41.Qb7 Bf5 42.Qg2 Rh3 43.Qh3 Bh3-+)) 40...Rg1 (40...Bf5 41.Qg2 Rg2 42.Kh4 g5 43.fg5 hg5 44.Kh5 Bg6) 41.Qh2+- Bg4 42.Kh4 g5 (42...Rc1 43.Kg4 g6+-) 43.fg5 Rf1 44.Kg4 Ra1 45.Qh6 Kg8 46.Kf5 (46.g6 Rf1 47.Qh7 Kf8 48.g7 Ke8 49.g8Q Rf8 50.Qe6 Kd8 51.Qhe7) 46...Rf1 (46...Rh1 47.Qe6 Kf8 48.Qd6 Ke8 49.Ke6 Rh6 50.gh6 b6 51.Qe7) 47.Kg6 Rf7 48.Qh8! Kh8 (48...Kh8 49.Kf7 Mate attack) 49.Kf7 b6 (49...Kh7 50.e6 Kh8 51.e7 Kh7 52.e8Q b6 53.Qg8) 50.e6 Kh7 51.e7 Kh8 52.e8Q Kh7 53.Qg8 1-0. pale blue (1925) – kernowjim, ChessWorld.net, 2014.

3.d4=+ Nbd7 4.Nd2 g6 (4...e5 5.b5=+) 5.Ngf3 Bg7 6.e4 e5 7.de5 Ne5 8.Ne5 de5 9.Bb2 Nd7 (9...Qd6 10.Qe2=) 10.Qf3 0-0 11.Rd1 Qe7 12.Bc4 c6 (12...Qb4?? 13.Ba3 Qa5 14.Bf8+-) 13.0-0 Nf6 14.Qe3 b6 15.b5 Ng4 (15...Be6 A) 16.Be5? Ng4 17.Bg7 Ne3 18.Bf8 Rf8 (18...Kf8?! 19.fe3 Rd8 20.Bd3=+) 19.fe3 Bc4 20.Nc4 Qc5-+; B) 16.Ba3 c5 17.Bb2+=) 16.Qc3 cb5 17.Ba3 Qh4 18.Nf3 Qh5 19.ab5 Re8 20.Bd5 Rb8 21.Bf7! Kf7 22.Qc7 Kg8 23.Qb8 Bd7 (23...Nf6 24.Rfe1+-) 24.Qb7 (24.Qa7 Be6+-) 24...Bb5 25.Qd5 (25...Kh8 26.Qb5+-) 1-0. market (2240) - CountryGentleman (1850), GameColony.com, 2003.

3.d4=+ Bf5 4.Nf3 g6 (4...d5 5.e3=+) 5.e3= Bg7 6.Bd3 Bd3 7.Qd3 0-0 8.Qb5 Nbd7 (8...b6!?=) 9.Qb7+= e5 10.0-0 e4 11.Nfd2 d5 12.c4 Rb8 13.Qa7?? (better is 13.Qa6+/-) 13...Rb4?? (better is 13...Qc8 14.Ne4 Ra8 15.Nf6 Bf6 16.Qa8 Qa8 17.cd5 Qd5-/+) 14.Ba3+- Rb1 (14...Qb8 15.Qb8 Rbb8 16.Bf8 Kf8 17.cd5 Nd5 18.Ne4+-) 15.Rfb1 (15.Nb1?! Qa8 16.Qa8 Ra8+-; < 15.Rab1 Re8 16.Rb7 Nb6+-) 15...Re8 16.a5 dc4 17.Nc4 Nd5 18.Rb5 (18.Qb7 N7f6+-) 18...N7f6 19.Rb7 Bf8 (19...Qc8 20.a6+-) 20.Bf8 Kf8 21.Qc5 Kg7 22.a6 Nc3 23.Qc7 Qc7 24.Rc7 Ne2 25.Kf1 Nc3 26.Nd6 Rf8 27.Rc3 Nd5 28.Rc5 Nb4 29.a7 Nd3 30.Rc8 f5 31.Rf8 Kf8 32.a8Q Kg7 33.Ra7 Kh6 34.Qd8 f4 35.Qh4 1-0. b4_player (1900) - serbkr (1795), GameColony.com, 2002.

3.h4 e5 4.h5 h6 5.e3 Bf5 6.d4 ed4 7.ed4 d5 8.c3 Ne4 9.Qe2 Be7 10.Qb5 Nd7 11.Qb7 Nb6 12.Bb5 Bd7 13.Bd7 Kf8 14.Bb5 Rb8 15.Qa7 Bg5 16.Bg5 hg5 17.a5 Ra8 18.ab6 Ra7 19.ba7 Ke7 20.a8R Qa8 21.Ra8 Ra8 22.Bd3 (time, 1–0). guest1149 – guest233, ICC, 2003.

3.Bb2 e5 4.Be5+= Be7 5.c4 a6 6.Nc3 d6 7.Bg3 Be6 8.e4 Nbd7 (8...ab5 9.cb5 d5 10.ed5 Nd5 11.Bd3=) 9.a4 0-0 10.Nf3 a5 11.Be2 Ng4 (11...Nh5 12.0-0+=) 12.0-0 b6 (12...Nge5 13.Nd5+/–) 13.h3 (13.d4 Ngf6+–) 13...Ngf6 (13...Nge5 14.Nd5+/–) 14.d4+– cd4 15.Nd4 Rc8 (better is 15...Qc7+–) 16.Nc6 (16.Ne6?! fe6 17.Bd6 Nc5+/–) 16...Qe8?! (16...Rc6 17.bc6 Ne5 18.Nd5 Ne4 19.c7+–) 17.Ne7 Kh8 (17...Qe7 18.Bd6 Qd8+–) 18.Nc8 Qc8 19.Qd6 Bc4 20.Bc4 Qc4 21.Nd5 Qc8 (21...Re8 22.Nf6 Nf6 23.Qb6 Ne4 24.Qa5 Ng3 25.fg3+–) 22.Nf6 Nf6 23.e5 Ne4 24.Qb6 Re8 (24...Qe8 25.Rac1 Ng3 26.fg3 Qe5 27.Rf7+–) 25.Rac1 Qf5 26.Qc6 Rd8 (26...Rf8 27.Rce1 Ng5 28.e6 fe6 29.b6+–) 27.Rcd1 Rf8 28.Rd4 (better is 28.Qc7!? h6+–) 28...Ng3 29.fg3 Qe5 30.Re4 Qg5 31.Re8 Kg8 32.Rf8 (32.Rf7 Qc1 33.Kh2 Qh1 34.Kh1 h6 35.Ref8 Kh7 36.Qe4) 32...Kf8 33.Qc8 Ke7 34.Qc7 Ke6 35.Re1 (35.Qc6 Ke5 36.Re1 Qe3 37.Re3 Kd4 38.Re4 Kd3 39.Qc4 Kd2 40.Rd4 Ke3 41.Qd3) 35...Kf6 (35...Qe3 36.Re3 Kf6 37.Qd6 Kg5 38.h4 Kh5 39.Qe5 f5 40.Qf5 g5 41.Qg5) 36.Qd8 (36.Qd6 Kf5 37.Re5) 36...Kg6+– 37.Qg5 Kg5 38.b6 f5 39.b7 g6 (39...f4 40.b8Q fg3 41.Re5 Kf6 42.Qd6 Kf7 43.Re7 Kg8 44.Qd8) 40.b8Q h6 (40...Kh5 41.Qh8 Kh6 42.Re7 Kg5 43.Rh7 f4 44.Qe5) 41.Qd8 Kh5 42.Qh4 1–0. mic (2340) – vaingrecsky (2305), net–chess.com, 2016.

3.c4 b6 4.f3 g5 (4...e6 5.Bb2=+) 5.e4= d6 6.d4 cd4 7.Bg5 Bg7 8.Na3 Be6 (8...h6 9.Bh4=) 9.Bf6 (9.Ne2!?+=) 9...Bf6= 10.g3 Nd7 11.Bh3 Qc7 12.Be6 fe6 13.Rc1 Kf7 (13...Qc5 14.Qb3=+) 14.f4 a6 15.Rc2 e5 16.Qh5 Kg7 17.fe5 (17.Qg4 Kf7=) 17...de5 (17...Ne5!? 18.Nf3 Ng6=+) 18.Qg4= Kf7 19.ba6 Ra6 20.Nb5 Qb7 (20...Qc6 21.Nf3=) 21.a3 (21.Nf3 Ke8+=) 21...Rg8 22.Qf5 Rg7 23.Qh5 (23.Nh3!?=) 23...Kf8=+ 24.Qf5 Ra4 (24...Rf7 25.Qg4-/+) 25.Nf3 (25.Nh3 Qc6 26.0-0 e6=+) 25...Nc5 (better 25...e6 26.Qe6 Qe4 27.Re2 Qb1 28.Kf2 Qh1-/+) 26.g4? (26.Nd2 Rf7 27.0-0 Qc6=) 26...h6?? (better 26...Qe4!? 27.Qe4 Ne4-+) 27.0-0 (better 27.Nd2=+) 27...Qb8?? (27...Qe4 28.Qc8 Kf7 29.Ng5 hg5 30.Rf6 Kf6 31.Rf2 Kg6 32.Qe8 Kh7 33.Qh5 Kg8 34.Qe8 Kh7 35.Qh5 Kg8 36.Qe8 Kh7=) 28.Ne5+- Kg8 29.Nd7 (29.Nc6 Qa8 30.Nbd4 Bd4 31.Nd4 Qe4 32.Qe4 Ne4+=) 29...Qd8? (better 29...Nd7!? 30.Qd7 Qe5=) 30.Nc5 bc5 31.h3 d3 32.Rd2 Rg5 33.Qf3 Rc4 34.Rd3 Qa5 (34...Qb6 35.Rd8 Kh7 36.Rd7 Qb5 37.Qf6 Qd7 38.Qf7 Rg7 39.Qc4+-) 35.e5 (35.Nd6 Rd4 36.e5 Rd3 37.Qd3 Be5 38.Qd5 Kh7 39.Rf7 Rg7 40.Qe5 Rf7 41.Nf7 Qa3 42.Qh8 Kg6 43.Ne5 Kg5 44.Kg2+-) 35...Bg7?? (better 35...Re5 36.Qc6 Kh7=) 36.Qf7+- Kh7 37.Qc4 Be5 (37...Re5 38.Qc2 Kg8+-) 38.Rd7 Rg7 39.Qc5 (better 39.Qd3 Kg8 40.Rd8 Qd8 41.Qd8 Kh7 42.Qd3 Kh8 43.Rf8 Rg8+-) 39...Bb8 (39...Bf6+-) 40.Qc2 Kg8 41.Qc8 (better 41.Qb3 Kh7 42.Qd3 Kg8 43.Rd8 Qd8 44.Qd8 Kh7+-) 41...Kh7 42.Qb8 Qa4 43.Rf4 (better 43.Rd8 Rg4 44.hg4 Qg4 45.Kf2 Qf5 46.Ke3 Qg5 47.Kd3 Qg7+-) 43...Qb3 44.Kg2 Qb2 (44...Qc2 45.Kg3 Qb3 46.Rf3+-) 45.Kg3 (better 45.Rf2 Qb3 46.Qe5 Qg8+-) 45...Qe2 (45...Qb3 46.Rf3 Qe6 47.Rd8+-) 46.Qb7 (46.Rd8 Qe1 47.Kg2 Qe2 48.Rf2 Rg4 49.hg4 Qg4 50.Kf1 Qc4 51.Kg1 Qg4 52.Rg2 h5 53.Rh8 Kg6 54.Qf8 Qg2 55.Kg2 h4 56.Rg8 Kh5 57.Qf5 Kh6 58.Qg6) 46...Qe1 (46...Qe3 47.Qf3 Qg1 48.Kh4 Qe1 49.Qf2 Qf2 50.Rf2+-) 47.Kh2 Qe2 48.Kg3 (48.Qg2!? Qg2 49.Kg2 e6 50.Rg7 Kg7+-) 48...Qe3?? (48...Qe1 49.Kg2 Qe5+-) 49.Qf3 Qe1 50.Qf2 Qa5 51.Qc2 (51.Rf7 h5 52.Qf5 Kh8 53.Rf8 Rg8 54.Qh5 Kg7 55.Rf7) 51...Kh8 52.Qb2 (52.Rf8 Rg8 53.Qb2 Qc3 54.Qc3 Kh7 55.Re7 Kg6 56.Rg8) 52...Qe1+- 53.Kh2 e5 54.Rf8 Rg8 55.Rg8 (55.Qc2 Qe2 56.Qe2 Rf8 57.Qe5 Rf6 58.Qf6 Kg8 59.Qd8) 55...Kg8 56.Qb3 Kh8 57.Rd8 Kg7 58.Qg8 Kf6 59.Rd6 (59.Rf8 Ke7 60.Qf7) 59...Ke7 60.Qe6 (60.Qg7 Ke8 61.Nc7) 60...Kf8 61.Rd8 Kg7 62.Rd7 Kf8 63.Qe7 (63.Qf7) 63...Kg8 64.Rd8 (64.Qd8) 1-0. ghostxmas – WarlpiriMan, ChessWorld.net, 2008.

3.a4 Be7 4.Bb2 0-0 5.e3 d5 6.f4 a6 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.f4 0-0 6.Nf3 a6 7.a4).

3.Bb2 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 d5 7.Nf3 Nbd7 8.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3).

3.Bb2 a6 4.a4 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4).

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

3.Bb2 d5 4.a4 c5 5.e3 b6 6.Nf3 Bb7 7.Na3 Be7 8.Be2 0-0 9.0-0 Nbd7 10.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.Na3).

3.c4 (--> 2.c4 e6 3.b5).

3.c4 g6 4.Bb2 Bg7 5.a4 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0-0 5.c4 e6).

3.a4 ba4 4.Qa4 e5=.

3.Qc2 a5 4.e4+=.

3.Qc2 Bb7 4.Na3 Bc6 5.d3 (5.Nf3 a5=) 5...e5 (5...a5 6.ba5 Ra5 7.Nb1+=) 6.e4 Be7 (6...a5 7.Rb1+=) 7.Nf3= d6 8.Be2 0-0 9.0-0 Nbd7 (9...a5 10.Re1=) 10.Be3 (10.c4!?+=) 10...a5= 11.d4? (better is 11.Rfd1!?=) 11...ab4 (11...Ne4?! 12.Nb5 Nef6 13.de5 de5 14.Rfd1=; 11...Be4?! 12.Qb2 c6 13.de5 de5 14.Rad1-+) 12.de5 (12.cb4 Be4 13.Qb2 c6-/+) 12...de5 (12...Ne5 13.Ne5 Be4 14.Nc6 Bc2 15.Nd8 ba3 16.Nc6-/+) 13.Nb5 (13.cb4 Be4 (worse is 13...Ra3 14.Qc6 Bb4 15.Rfc1+=) 14.Qb2 c6-/+) 13...Be4 (13...Qb8 14.a4 Be4 15.Qd1-+) 14.Qd2 (14.Qd1 Qb8 15.Nd2 Bc6-+) 14...c6 15.Na7? (better is 15.Nd6 bc3 16.Qd1 Bd6 17.Qd6-+) 15...Qa5 16.Nc6 (16.Rfc1 Rfb8-+) 16...Bc6 17.cb4 (17.c4 Rfd8-+) 17...Bb4 (worse is 17...Qb4 18.Qb4 Bb4 19.Rfc1-+) 18.Qc2 Rac8 19.Qd3 (19.Qf5-+) 19...e4 20.Qd4 (20.Qa6 Qa6 21.Ba6 Ra8-+) 20...ef3 21.Bf3 Bf3 22.gf3 Bc3 23.Qh4 (23.Qa7 Qh5 24.Rad1 Ne5-+) 23...Ba1 24.Ra1 Ne5 25.Kg2 (25.Qf4 Qd5 26.Kg2 Rc4-+) 25...Qd5 (25...Nf3 26.Qg3 Ne1 27.Kg1-+) 26.Qg3 Neg4 (26...Rc4 27.h3-+) 27.Bf4 (27.a4 Rc4 28.Kh1 Ne5-+) 27...Qf5 (27...Rc2 28.Rf1 Ra2 29.Kg1-+) 28.h3 (28.fg4 Ng4 29.Rc1-+) 28...Nf2! 29.Kf2 (29.Kf2 Rc2 Pinning; 29.Qf2 Qf4 Deflection (29...Qf4 Overloading)) 29...Qc2 (better is 29...Rc2 30.Kg1 Nh5 31.Qg5 Qf4 32.Qf4 Nf4 33.h4-+) 30.Kg1 Rfd8 31.Bh6 (31.Be3-+) 31...Rd1 32.Rd1 0–1. giraira – _maud_, gameknot.com, 2018. (=1.c3 Nf6 2.b4 b5)

3.Qc2 Bb7 4.a4 ba4 5.Qa4 e5=.

3.Qc2 Bb7 4.e3 a6 (4...a5 5.Bb2+=) 5.h3 (5.a4 e5=) 5...d5 (5...e6 6.a4+=) 6.d4= Qd6 (6...Nbd7 7.Nf3=) 7.Bd3 (7.a4 c6+=) 7...Nbd7 (7...Bc6 8.Nd2=) 8.Nd2 (8.a4 c6=) 8...g6 (8...e5 9.Bf5+=) 9.Ne2 (9.Ngf3 e5 10.de5 Ne5 11.Ne5 Qe5+=) 9...e5= 10.Ng3 (10.de5 Ne5 11.0-0 Nd3 12.Qd3 Bg7=) 10...ed4 (10...Qc6 11.Qb3=) 11.cd4 (11.ed4 Bg7+=) 11...Qb4= 12.Qc7 Ra7 (12...Rb8 13.Rb1 Qd6 14.Qc3=) 13.a3 (13.Rb1 Bd6 14.Qc2 Qa5=) 13...Qe7 (13...Qd6 14.Qc2=) 14.0-0 (14.a4 Qe6 15.ab5 Bd6=) 14...Qd8 (14...Qe6 15.Qa5 Bd6 16.Bb5 Bg3 17.fg3 Qe3 18.Kh2+=) 15.Qd8 (15.Qf4 Qa5 16.Rb1 Be7+= (worse is 16...Ba3 17.Ra1+/–)) 15...Kd8= 16.f4 (16.Nf3 Bd6=) 16...Bd6 17.Bb2 (17.Nf3 h6=) 17...h5 (17...Re8 18.Kf2-/+) 18.e4 (18.Bc3 h4 19.Ne2 Re8=) 18...de4 (18...h4 19.e5 hg3 20.ed6+=) 19.Nge4 Ne4 (19...Be4 20.Ne4 Ne4 21.Be4+=) 20.Be4 (20.Ne4 Be4 21.Be4 Re8+=) 20...f5 (20...Re8 21.Rae1+=) 21.Bb7 Rb7 22.Nb3 (22.Rae1 Re8 23.Re8 Ke8+=) 22...Re8 23.Na5 (23.Bc3 Re4+=) 23...Rc7-/+ 24.d5 (24.Rac1 Rc1 25.Bc1 Kc7-/+) 24...Re4 (24...Nb6 25.Nc6 Kc8 26.Rad1-/+) 25.Nc6 Kc8 26.g3 (26.Nb4 Nc5-/+) 26...Bc5 (26...Nb6 27.Rfd1-/+) 27.Kh1 Bb6 (27...Nb6!? 28.Rfc1 Nc4-/+) 28.Rac1 (better is 28.Rfc1 Kb7 29.Rc2=) 28...Rc4 (better is 28...Bc5=) 29.Rc4+/– bc4 30.Rc1 Bf2 (30...Be3 31.Rc4 Nb6 32.Ne7 Kd7 33.Rc7 Kc7 34.Ng6+–) 31.Rc4 (31.Kg2 Be3 32.Rc4 Nb6 33.Ne7 Kd7 34.Rc7 Kc7 35.Ng6 Kd6+–) 31...Nb6+/– 32.Ne7 (32.Rc2 Nd5 33.Be5 Bg3 34.Bc7 Nc7 35.Ne7 Kd7 36.Ng6 Kd6+–) 32...Kd7 33.Rc7 Kc7 34.Be5 (34.Kg2 Bc5 35.Ng6 Nd5+/–) 34...Kd7 35.d6 (35.Ng6 Nd5 36.Kg2 Bc5+/–) 35...Bg3 (35...Bc5 36.Ng6 Ba3 37.Nf8 Kc6 38.Ne6+=) 36.Ng6 (36.Kg2 Be1 37.Ng6+/–) 36...a5 (36...Nc4!? 37.Kg2 Be1+/–) 37.Kg2+– Be1 38.Ne7 (38.Kf3 Nc4 39.Ke2 Bg3 40.Nf8 Kc6+/–) 38...a4 39.Nf5 Nc4 40.Ng7 (40.Kf3 Na3 41.Ke4 Nb5+/–) 40...h4 (40...Ne5 41.fe5 (41.Nh5? Nc4-+) 41...Bc3 42.Nh5 Be5 43.Ng3+=) 41.Kf3+/– Na3 42.Nf5 (42.Ke4!?+/–) 42...Nc4= 43.Ba1 (43.Bf6 Ke6 44.d7 Ba5=) 43...a3 (43...Nd6 44.Kg4 Nf5 45.Kf5=) 44.Kg4 (44.Ke2 Bg3 45.Ng3 hg3+=) 44...Nd6 (44...a2 45.Kg5+=) 45.Nh4= Ne4 46.Ng2 Bc3 47.Bc3 Nc3 48.Ne1 a2 49.Nc2 Ne4 (49...Ne2 50.Na1=) 50.h4 (50.Kf5!? Nd2 51.Kf6+=) 50...Ke6= 51.f5 (51.Na1 Kf6+=) 51...Kf6 (51...Ke5 52.Kf3+=) 52.h5 (52.Kf4 Nd6 53.Ke3 Nf5 54.Kd3 Nh4=) 52...Ng5 (52...Nd6 53.Kf4+=) 53.h6 (53.Kf4!?+=) 53...Nf7-/+ 54.h7 Kg7 55.Kh5 (better is 55.Kf3+=) 55...Kh7-+ 56.f6 Ne5 (56...Kg8 57.Kg6-/+) 57.Kg5-+ Nf7 58.Kh5 ½–½. giraira (1605) – agarc, gameknot.com, 2017. (=1.c3 Nf6 2.b4 b5)

3.e3 c6 4.Be2 (4.a4 ba4 5.Nf3 d6+=) 4...a5 5.Bb2 ab4 6.cb4 Nd5 7.a3 d6 8.Nc3 Nb6 9.d3 Bb7 (9...e5 10.Nf3=) 10.Nf3 N8d7 11.0-0 e6 12.Ne1 (12.Qc2 Be7=) 12...f5 (12...Be7 13.Bf3 Ra7 14.a4 ba4 15.Na4=) 13.f4 g6 (better is 13...Nf6!?+=) 14.Nb5!+/– Nf6? (14...cb5 15.Bh8 Discovered attack) 15.Bf6+– Qf6 16.Nc7 Kd7 (16...Kf7 17.Na8 Nd5 18.Nc2+–) 17.Na8 Ba8 18.d4 Nd5 19.b5 (19.Qa4 Qd8+–) 19...Nc3 20.bc6 Bc6 21.Qc2 Nd5 (21...Ne2 22.Qe2 Be7+–) 22.Rc1 Bb7 (22...Ne7 23.Qb2 Ke8 24.Rc6 Nc6 25.Bb5+–) 23.Bf3 (better is 23.Qb3 Bc6 24.Bb5+–) 23...Qd8 24.Qa4 Ke7 25.Bd5 Bd5 26.Nf3 (26.Qa7 Kf6+–) 26...Kf6 27.Qa7 Qa8 (27...Be7 28.Rc7 Re8 29.a4+–) 28.Rc7 Qa7 29.Ra7 Be7 30.Rc1 h6 (30...Ra8 31.Ra8 Ba8 32.a4+–) 31.Rcc7 Re8 32.a4 Kf7 33.a5 Kf6 34.a6 Kf7 35.Rd7 Kf6 36.Rac7 g5 (36...Ba8 37.a7+–) 37.fg5 hg5 38.Ng5! Kg5 39.Re7 Re7 (39...Rb8 40.Rg7 Kh5 41.Rh7 Kg6 42.Rcg7 Kf6 43.h4+–) 40.Re7 Kf6 41.Re8 (better is 41.Rd7!? Ba8+–) 41...Kf7 42.Rb8 Kf6 43.a7 e5 (43...Ke7 44.h4+–) 44.de5 de5 1–0. giraira – krakatoan_bob, gameknot.com, 2018. (=1.c3 Nf6 2.b4 b5)

3.a3 Bd7 4.Bb2 e6 5.e3 Be7 6.Nf3 Nc6 7.Be2 0-0 8.0-0 h6 9.d4 d5 10.Nbd2 a6 11.Rc1 b5 12.Qc2 Ne4?? 13.Ne4+– de4 14.Nd2 e5 15.Ne4 ed4 16.cd4 Bb4? 17.ab4 Nd4 18.ed4 g6 19.Ng3 Bf5 20.Nf5 gf5 21.Bd3 Kh8 22.g3 Rg8 23.Bf5 Rg5 24.Be4 Rd5 25.Bd5 c5 26.Ba8 cd4 27.Bd4! (27.Bd4 Qd4 28.Qc5+–) 1–0. Fournier,Frederic (1935) – Borromeo, Active Blind, 2008.

3.Bb2 Nbd7 4.d4 e5 5.Nd2 g6 (5...d5 6.de5 Ne5 7.Ngf3 Nf3 8.Nf3=+) 6.Qc2 ed4 7.e4? (7.cd4 d5 8.a3 Nb6=) 7...Bg7?? (better 7...de3 8.fe3 Qe7-+) 8.cd4= 0-0 9.f3 (9.Bd3 d5 10.e5 Ne8+=) 9...Re8= 10.Bd3 (10.Rc1 Nd5 11.b5 Qg5=) 10...c5 (10...Nd5 11.Qb3 Ne3 12.g3=+) 11.Ne2 cd4 12.Nd4 (12.0-0 d5=) 12...Ne5 (12...Nd5 13.Bc4 N7b6 14.Bd5 Nd5=) 13.Ne2 (13.0-0 d5=) 13...Qd7 (13...Nd5 14.ed5 Nd3 15.Qd3 Bb2 16.Rb1-/+) 14.Nc3 (14.Rc1 Nd5 15.ed5 Nd3 16.Qd3 Bb2=+) 14...Qd8 (better 14...Nd3 15.Qd3 d5=+) 15.Nd5?? (15.Bb5 Nc6=) 15...Bd7 (better 15...Nd5 16.Bb5 Nb4-+) 16.Nf6=+ Bf6 17.Qd1?? (better 17.Be2!?=+) 17...Rc8 (better 17...Nd3 18.Kf1 Nb2-+) 18.Be2 (18.Be5 Be5 19.Rb1-+) 18...Nd3! 19.Bd3 Bb2 20.Rb1 Bd4 21.Kf1 (21.Bc4 Qg5 22.Qe2 Bc3-+) 21...Qf6 22.Ke2 (22.Nb3 Bc3-/+) 22...g5 (22...Be6 23.Nb3 Bb3 24.ab3-+) 23.Rf1? (23.h4 g4-/+) 23...g4 (23...Qf4!? 24.Ke1 Qh4 25.g3 Qh2 26.Qe2 Qg3 27.Kd1-+) 24.fg4 (24.Qb3 Qf4 25.Bc4 b5-+) 24...Bg4-+ 25.Rf3 (better 25.Ke1 Qh4 26.g3-+) 25...Qf4 26.Qf1 Bf3 (26...d5!? 27.Ke1 Qh2 28.Kd1 de4 29.Ne4-+) 27.Qf3 Qf3 (27...Qh2 28.Rf1-+) 28.Nf3 Be5 29.Ng5 (29.a4 Bg7 30.Kf2 Rc3-+) 29...Re7 (29...d5 30.Kf1 Bf4 31.Nh3 de4 32.Nf4 ed3 33.Nd3-+) 30.Rf1 (30.Nf3 Bc3 31.Kf2 Rec7-+) 30...f6 (better 30...Bh2!? 31.Rh1 Be5 32.Rh7-+) 31.Nf3 d5! 32.Nh4? (32.ed5 Bc3 Double attack (32...Bd4 Decoy)) 32...de4-+ 33.Be4 (33.Bb1-+) 33...Bd4 (better 33...Bh2 34.Nf5 Re4 35.Kd3 Ree8-+) 34.Nf5 (34.Rf4!? Rce8 35.Kf3-/+) 34...Re4-+ 35.Kd3 Re5 (35...Rce8!? 36.Nd6 Re1 37.Kd4 Rf1 38.Ne8-+) 36.Nd4 Rd8 37.Rf3 (37.Rf6 Rh5 38.h3 Rh4-+) 37...Red5 (37...Rh5 38.h3-+) 38.Rf4 Kf7 39.Re4 f5 40.Ke3?? (40.Rf4 Kf6-+) 40...Kf6 (better 40...fe4 41.Ne2 Rb5 42.Ke4 Rb4 43.Ke3 Rb2-+) 41.Re6 Kf7 (41...Kf7 42.Re4 fe4-+) 0-1. Danippov (2075) - opperwezen (2445), lichess.org, 2020.

3.e3 Bf5 4.Bb2 Bb1 5.Rb1 e6 6.Nf3 Nbd7 7.d4 g6 8.Bd3 Bg7 9.0-0 0-0 10.Qc2 Rb8 11.Rfe1 b6 12.e4 c5 13.bc5 bc5 14.a3 Qb6 15.dc5 Qb2?? 16.Rb2+– Rb2 17.Qb2 Ne4 18.Be4 Nc5 19.Qb1 Ne4 20.Re4 d5 21.Re1 e5 22.h3 d4 23.cd4 ed4 24.Rd1 Rd8 25.Rd3 Kh8 26.Qd1 a5 27.Nd4 Bd4 28.Rd4 Rd4 29.Qd4 (29.Qd4 Kg8 30.Qd8 Kg7 31.Qa5+–) 1–0. Fournier,Frederic (1915) – Giovani (1750), Active blind, 2011.

(--> 1.b4 e5 2.c3 Nf6).

3.a4 (--> 2.a4 e5 3.c3).

3.e3 d5 (--> 1.b4 e5 2.c3 d5 3.e3 Nf6).

(--> 1.b4 e6 2.c3 Nf6).

3.Bb2 (--> 1.b4 e6 2.Bb2 Nf6 3.c3).

3.d4 (--> 2.d4 e6 3.c3).

3.e3 d5 (--> 1.b4 e6 2.c3 d5 3.e3 Nf6).

3.Bb2 b5 4.e3 Nc6 5.a3 bc4 6.Bc4 d5 7.Be2 Bd7 (7...e5 8.Qc2 Bd7 9.Nf3=) 8.Nf3+= e6 9.0-0 Bd6 10.d4 0-0 11.Bd3 h6 12.Nbd2 Ne7 13.Nb3 Ba4 14.Bc2 Bb3 15.Bb3 c6 16.Rc1 a5 17.ba5 Qa5 18.Ne5 Attacking the backward pawn on c6 18...Rfc8 19.Ra1 (19.a4 Be5 20.de5 Ne4+=) 19...Qc7 20.Qc2 (20.Nf3!?=) 20...c5-/+ 21.f4 c4 22.Ba2 Ba3 ½–½. Hoelldorfer,August (1625) – Franz,Irma, Bayern–ch Seniors, 1997. (=1.c4 Nf6 2.b4 a6)

3.Bb2 e6 4.a3 b5 5.Qc2 bc4 6.g3 (better 6.Qc4!? d5 7.Qc2=) 6...d5-/+ 7.Nf3 Nbd7 8.d4 cd3! 9.ed3 (9.Qd3 a5 Combination; 9.ed3 Bd6 Combination) 9...c5 10.Bg2 (10.bc5 Bc5 11.d4 Be7-/+) 10...cb4 11.ab4 Bb4 12.Bc3 Bd6 13.0-0 0-0 14.Ba5 Qe7 15.Qc6 Rb8 16.Nbd2? (16.Bc7 Bc7 17.Qc7-+) 16...Nc5 17.Rab1 (17.Rfc1 Bd7 18.Rc5 Bc6 19.Rc6-+) 17…Bd7 (17...Bd7 18.Qd6 Qd6-+) 0-1. Haroldlee123 (1800) - marekt (2470), ChessWorld.net, 2013. (=1.c4 Nf6 2.b4)

3.Nc3 e5 4.a3 d5 5.cd5 Nd5 6.Bb2 Nc6 7.e4 Nf4 8.Nf3 Bg4 9.h3 Bh5 10.b5 Bf3 11.Qf3 Nd4 12.Qd1 ab5 13.Nb5 Ng2 14.Bg2 Nb5 15.Be5 Qg5 16.Bg3 Ba3 17.0-0 0-0 18.d4 Bb2 19.Ra8 Ra8 20.d5 c6 21.dc6 bc6 22.Qb3 (22.Qd7!?=+) 22...Bd4-/+ 23.Kh1 Ra3 24.Qc4 Rc3 25.Qa4 h6 26.Qa8 Kh7 27.e5 Be5 28.Be5 (better 28.Qf8!?-/+) 28...Qe5-+ 29.Qf8 Qf4 30.Qe7 Nd4 31.Qe4 Qe4 32.Be4 f5 33.Kg2 (33.Bg2-+) 33...fe4 34.Re1 c5 35.Re4 Rd3 36.f4 c4 37.Re8 (37.Kf2 c3 38.Re5 c2-+) 37...c3 38.Rc8 c2 39.Kf2 Rh3 40.Kg2 Re3 41.Kf2 Re2 42.Kf1 Re6 43.f5 Rc6 44.Rc6 0-1. mckenna215 – marekt, ChessWorld.net, 2013. (=1.c4 Nf6 2.b4)

3.a4 Bg7 4.e3 0-0 5.c5 d6 6.d4 dc5 7.bc5 Qd5 8.Na3 Ne4 9.Bc4 Qf5 10.Qc2 Be6 11.Bd3 Bd5 12.f3 Nc6 13.fe4 Be4 14.Be4 Qf6 15.Bh7 Kh8 16.Nc4 Rfe8 17.Bf5 e6 18.Bg4 Re7 19.Nf3 b5 20.ab5 Nd8 21.0-0 Nb7 22.Nfe5 Qf1 23.Kf1 Be5 24.Ne5 f5 25.Ng6 Kg7 26.Ne7 Kf6 27.Nf5 ef5 28.Qf5 Kg7 29.Qg5 Kf7 30.Qd5 Ke7 31.Qb7 Black resigned 1-0. themuttsknutts (1695) – WarlpiriMan, ChessWorld.net, 2012.

3.d4 Bg7 4.Bb2 Rg8 5.d5 d6 6.b5 b6 7.a4 e6 8.de6 Be6 9.e3 c6 10.Nf3 cb5 11.cb5 a6 12.Nd4 ab5 13.Bb5 Bd7 14.Bd7 Qd7 15.0-0 Ra5 16.Nb5 d5 17.Nd2 Qd6 18.Nf3 Ng4 19.g3 Qb4 20.Bg7 Rg7 21.Qd5 Ra4 22.Qb7 Ra1 23.Qb8 Ke7 24.Qd6 Qd6 25.Nd6 Rf1 26.Kf1 Kd6 27.Nd4 Nh2 28.Kg2 Ng4 29.Nf5 Kc5 30.Ng7 b5 31.Nf5 b4 32.Nd4 Kc4 33.Kf3 b3 34.Nb3 Kb3 35.Kg4 f6 36.Kf5 Kc3 37.Kf6 g4 38.e4 Kd3 39.e5 Ke2 40.e6 Kf2 41.e7 Kg3 42.e8Q Kh4 43.Qe1 g3 1-0. axtur777 - jfavila0923, lichess.org, 2019.

3.a3 d5 4.Nf3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d3).

3.c3!?=+.

3.Be3 Bb4-/+ 4.Bd2 Bd2 5.Qd2 0-0 6.f3 (6.Nf3 Re8-/+) 6...d5 7.Qc3 (7.e4 Nc6-+) 7...b6 (7...d4 8.Qd2-+) 8.a4 (8.d4 c5-+) 8...c5 9.Nd2 (9.Qd2 Nc6-+) 9...Nc6 (9...d4 10.Qb2-+) 10.g3 (10.e4 e5-+) 10...d4 11.Qc4 Na5 12.Qb5 Nd5 13.Ne4 Ne3 14.Rc1 Nf1 15.Kf1 f5 16.Nd2 Qg5 17.f4 Qg4 18.Ngf3 Qh3 19.Kf2 Bb7 20.Ng5?? Qg2 21.Ke1 Qh1 22.Nf1 Bg2 23.Kd2 Bf1 24.Ne6 Qh2 25.Rf1 Rfe8 26.Qc6 Nc6 27.Nc7 Qg2 28.Ne8 Qf1 29.Nc7 Rc8 30.Nb5 Nb4 31.Na7 Ra8 32.c3 dc3 33.Kc3 Ra7 (33...Ra7 34.Kc4 Qe2 35.Kb5 Qe6 36.a5 Ra5#; 33...Qc1 34.Kb3 Qc2 35.Ka3 Qc3#) 0–1. jgaddy (1705) – jpalasek (2015), net–chess.com, 2007.

3.e4 d6 (3...Bb4 4.c3 Bd6 5.Nf3-/+) 4.f4 b5 (4...e5 5.c3=) 5.Nf3 Bb7 6.e5 (6.a4 a5 7.ab5 ab4 8.Ra8 Ba8=) 6...de5 7.fe5 Nd5 (< 7...Bb4 8.c3 Bf3 9.Qf3+/–) 8.d4 (8.a3 a5 9.c4 Nb6 10.ba5 Bf3 11.Qf3 Ra5=+) 8...a6 (better is 8...Bb4 9.Kf2 a6-/+) 9.c3= Nc6 (9...Be7 10.a4+=) 10.Be2 h6 11.0-0 Be7 12.Qe1 Ndb4 13.cb4 Nd4 14.Nd4 (14.Qf2 Ne2 15.Qe2 Bb4+=) 14...Qd4= 15.Qf2 Qf2 16.Rf2 Bb4 17.Be3 0-0 18.a4 c6 19.ab5 cb5=+ 20.Rf1 Rfc8 21.Bh5 Rc7 22.Ra2 Bf8 23.Nd2 g6 24.Bf3 h5 25.Bb7+= Rb7 26.Rfa1 Rd8 27.Ra6+/– Bb4 28.Ne4+– Rd5? 29.Nf6 (29.Nf6 Kg7 30.Nd5 ed5 31.Ra7+–) 1–0. mrrook (2495) – opportunity (2320), net–chess.com, 2010.

3.Bb2 Bg7 4.e4 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 Bg7 4.d3).

3.e4= e5 4.Nc3 (better is 4.c3!?=) 4...Bb4-/+ 5.Bd2 Bf8 (5...d5 6.Nd5 Bd2 7.Qd2 Nd5 8.ed5 Qd5 9.Be2-/+) 6.Be2=+ Nc6 7.Nf3 (7.Rb1 Be7=+) 7...Bg7 8.h3 (8.0-0 d5-/+) 8...d6 (8...d5 9.ed5 Nd5 10.Nd5 Qd5 11.0-0-/+) 9.a3 (9.0-0 d5-/+) 9...a6 10.0-0 0-0 11.Bg5 h6 12.Bf6 Bf6 13.Nh2 Bg7 14.f4? Nd4 15.Nd5 Be6 16.c3 Ne2 17.Qe2 Bd5 18.ed5 ef4 19.Rf4 Bc3-+ 20.Ng4?? Ba1 21.Nh6 Kg7 22.Rh4 Qh4 23.Ng4 Rae8 24.Qf1 Re1 25.Qe1 Qe1 26.Kh2 f5 (26...f5 27.h4 Qh4 28.Kg1 Qe1 29.Kh2 Rh8 30.Nh6 Rh6#) 0–1. calchess10 – sturgav, ChessWorld.net, 2011.

3.e3 b5 4.Nc3 (4.a4 e6=) 4...d5 5.Nf3 (5.a4 e5 6.de5 Bb4=) 5...Nc6 (5...e5 6.de5 Bb4=) 6.Bd3 (better is 6.a3!?=) 6...Nb4-/+ 7.Ne5 Nd3 8.Qd3 Qd6 9.e4 Bb7 10.Rb1? g6?? 11.a4?? de4-+ 12.Qg3 Qd4 13.Bd2 Nh5 14.Qg5 f6 15.Qg4 Qe5 16.Rb4 Bh6! 17.0-0 Bd2 0–1. runner – richgrady (2135), net–chess.com, 2006.

3.e3 d5 4.Nf3=.

3.e3 e6 4.a3 Be7 5.Nf3 (5.Bd3 d5=) 5...d5 6.Bd3 0-0 7.Nbd2 b6 8.0-0 c5 9.dc5 bc5 10.bc5 Bc5 (10...Qc7 11.Bb2=) 11.Bb2 Be7 12.Ne5 Bd7 (12...Qd6 13.Rb1=) 13.c4+= Nc6 14.Nd7 Qd7 15.cd5 (15.Qc2 d4 16.Nf3 e5+=) 15...Nd5 (15...Qd5 16.Bc4 Qa5 17.Qc2=) 16.Rc1 Bf6 (16...Rfc8 17.Nc4+=) 17.Bf6+- Nf6 18.Ne4 Qe8?? (better 18...Ne5 19.Nf6 gf6+-) 19.Nf6+- gf6 20.Bh7! Kh7 21.Qh5 Kg7 22.Qg4 Kh8 23.Qh3 (23.Qh4 Kg7 24.Qg3 Kh6+-) 23...Kg7 24.Qg3 Kh8 (24...Kh6 25.Rc4 Nd4 26.Rd4 Qb5 27.Rh4 Qh5 28.Rh5 Kh5+-) 25.Rc4 (25.Rc4 Nd4 26.Rd4 Qa4 27.Ra4 Rfd8 28.Rh4) 1-0. Vendelo - Ajdar23, internet, 2020.

3.Nf3 d5=.

3.Nc3 Bb7 4.Nf3 (4.Qd3 e6 5.a3 a5=) 4...e6 5.a3 d5 6.Bg5 Be7 7.Bf6 Bf6 8.e3 Nd7 9.Bb5 0-0 10.0-0 c6 11.Be2 c5 12.Re1 cd4 13.ed4 a5 (13...Qc7 14.Bb5+=) 14.Qd2 Rc8 (14...Qc7 15.Bd3=) 15.ba5 ba5 16.Rab1 Ba8 17.Bd3 h6 (17...Nb6 18.Nb5 Nc4 19.Qe2=) 18.a4 (18.Nb5 Be7+=) 18...Nb6= 19.Rb5 Nc4 20.Bc4 (20.Qf4 Be7 21.Rb3 Bb4+=) 20...Rc4+= 21.Na2 (21.Rb3 Qd7+=) 21...Qc7 (21...Ra4 22.Nc3 Bc6 23.Rb2-/+) 22.Rc1 (better is 22.Qa5!? Qa5 23.Ra5 Rc2 24.Nc1+=) 22...Ra4-/+ 23.Nc3 Rc4 (23...Rd4 24.Nd4 Bg5 25.Nd5 Bd5-+ (25...Bd2?! 26.Nc7 Bc1 27.Ra5+=)) 24.Rbb1?? (better is 24.Nd1-/+) 24...Rc3-+ 25.Qe2 a4 26.Ra1 a3 27.Ra2 Bc6 (27...Qc4 28.Qc4 dc4 29.Nd2-+) 28.Qd2 (28.Rca1 Qf4-+) 28...Bb5 (28...Ba4 29.Rca1 Be7 30.Ne1-+) 29.Rb1 (29.Rca1 Be7-+) 29...Ba4 30.Rb4 (30.Rba1 Be7-+) 30...Bc2 (30...Rc2 31.Rc2 Qc2 32.Qc2 Bc2 33.Ne1-+) 31.Ne1 (31.Ra1 Rc8 32.h3 Bd3-+) 31...Bg6 (better is 31...Bg5!? 32.Qe2 Be7 33.Rb5-+) 32.Rc2 (32.h3-+) 32...Bc2 0–1. overtoom – bindi, gameknot.com, 2014.

3.c4 e6 4.d5 Bb4 5.Nd2 0-0 6.Rb1 Ba5 7.Ngf3 Bb7 8.h4 ed5 9.Ng5 dc4 10.Rh3 c3 11.Nb3 c2 12.Qd2 1–0. tiraspol3000 – Averroes, playchess.de, 2001.

3.Nf3 Bb7 4.e3 d6 5.Bb2 Qd7 6.a3 b5 7.c4 c6 8.Nc3 g6 (8...bc4!? 9.Bc4 a5+=) 9.cb5+– cb5 10.Bb5 Bc6 11.Bd3 Qg4 12.d5 Bb7 13.h3 Qc8 14.Rc1 Bg7 (14...Qd8 15.Nb5 Bg7 16.Nc7 Kf8 17.e4+–) 15.Nb5 Nc6 (15...Qd8 16.Nc7 Kf8 17.Nd4+–) 16.dc6 Bc6 (16...Ba6 17.0-0+–) 17.Nfd4 Qb7 18.Rc6 0-0 19.Nc7 Rac8 (19...Rad8 20.0-0+–) 20.Ba6 Qc6 21.Nc6 Rc7 22.b5 Ne4 23.Qd5 Nc5 (23...Bb2 24.Qe4 Bc3 25.Ke2+–) 24.Ne7! Kh8 (24...Re7 25.Bg7) 25.Qd6 Ne6 26.Bg7 Kg7 27.0-0 Rd8 28.Qe5 Kf8 29.Nc6 Kg8 30.Nd8 (30...Nd8 31.Qc7+–) 1–0. jasa – burnden, ChessWorld.net, 2002.

3.bc5 e5 4.e3 (better 4.de5 Bc5 5.e3+=) 4...b6? (better 4...ed4!? 5.ed4 Be7+=) 5.cb6 (better 5.de5!? Ng8 6.cb6 Qb6+-) 5...Qb6+/- 6.de5 Ne4 (6...Qa5 7.Nd2 Qe5 8.Rb1+/-) 7.Bd3 Bb4 8.Kf1 Bb7 9.Na3 (9.a3 Be7+-) 9...Qc6+/- 10.Be4 Qe4 11.Nf3 0-0 12.Rb1 Na6 (12...a5 13.Nb5+/-) 13.Qd3 (13.Qd4 Rfc8+/-) 13...Qc6 (better 13...Rfc8+/-) 14.Bd2?? (better 14.Nb5+/-) 14...Nc5-/+ 15.Nd4?? (better 15.Bb4 Nd3 16.Bf8-/+) 15...Qg2-+ 16.Ke2 Nd3 17.cd3 Ba3 18.Rhg1 Qd5 (better 18...Qh2!? 19.e4 Qh5 20.Ke1-+) 19.Rb5 Bc5 20.Rg3 (20.Rc1 Rac8 21.Bb4 d6 22.ed6 Qh5 23.Kd2 Bb4 24.Rb4 Rc1 25.Kc1 Qh2-+) 20...f5 (20...Ba6!? 21.Ra5 Qe5 22.Bc3-+) 21.Nb3 Rac8 22.Nc5 (22.Ra5 d6 23.f4 Qh1 24.Nc5 Qh2 25.Kf1 Qd2 26.ed6 Qa5-+) 22...Rc5 23.Rb1 (23.Rc5 Qc5 24.e6 de6-+) 23...Rc2 24.Rbg1 g6 (24...Ba6 25.e4 Qe4 26.Re3 Bd3 27.Ke1 Rb8 28.Rg7 Kg7 29.f4 Qe3 30.Be3 Rb1 31.Bc1 Rbc1) 25.Rd1 f4 (better 25...Ba6 26.e4 Qe4 27.Kf1-+) 26.ef4 Rf4 27.Ke1 Qh1 28.Ke2 Bf3 (28...Rf2 29.Ke3 Rf3 30.Rf3 Qf3 31.Kd4 Qf2 32.Be3 Qh4 33.Bf4 Qf4) 29.Ke3 Qd1 30.Kf4 Rd2 (30...Qd2 31.Kf3 Qd3 32.Kg2 Qe4 33.Kh3 Qf5 34.Kg2 Qf2 35.Kh3 Qf1 36.Kh4 Rh2 37.Kg4 Qf5) 31.Rf3 Qf3! 32.Kf3 Rd3 33.Ke4 Ra3 34.f4 Ra2 35.h4 (35.h3 Rh2 36.Kd5 Rh3-+) 35...Ra6 (35...Ra4 36.Kd5-+) 36.h5 (36.Kd5 Kf7 37.Kc4 Ra4 38.Kd5 Rf4-+) 36...Rb6 37.h6 (37.hg6 hg6 38.Kd5 a5-+) 37...a5 38.f5 (38.Kd4-+) 38...gf5 39.Kf5 Rh6 40.Kg5 Re6 41.Kf5 a4 42.Kg5 a3 43.Kf4 a2 44.Kf5 (44.Kg3 a1Q 45.Kg2 Qe5 46.Kf3 Qf5 47.Kg3 Rg6 48.Kh4 Qg4) 0-1. SkilmirF (2410) - berval (2435), Rated Blitz game, lichess.org, 2016. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4)

3.bc5 e6 4.Nf3 d6 5.cd6 Bd6 6.c4 Be7 7.Nc3 b6 8.e3 Bb7 9.Be2 0-0 10.0-0 Nbd7 11.Bb2 Rc8 12.Rc1 a6 13.Qd2 Qc7 14.Rfd1 Qb8 15.h3 Qa8 16.Ne1 Rfd8 17.Nb1 (17.Qc2 Bd6+/-) 17...e5 18.d5 (worse 18.de5 Ne5 19.Bd4 b5 20.cb5 ab5 21.Rc8 Qc8+/-) 18...Ne4 19.Qc2 f5 20.Bd3?? (20.Nc3 Nd6+/-) 20...Ndc5?? (20...Bd5!? 21.Nc3 Bc6=) 21.Be4 (better 21.Nd2!? Nd3 22.Qd3 (22.Nd3?! Bd5 23.Ne5 Bf6+=) 22...Nd2 23.Rd2+-) 21...Ne4+= 22.f3 Nd6 The backward pawn on c4 becomes a target 23.Nd2 Bf6 24.Nd3 Bd5 The pressure on the backward pawn c4 grows 25.Ne5 Nc4? (better 25...Be6+=) 26.Nec4+- Bc4? (26...Bb2 27.Qb2 Bc4 28.Nc4 Rd1 29.Rd1 Rc4 30.Qb6 Rc8 31.Qe6 Kh8+-) 27.Nc4 Rd1 28.Qd1 b5 (28...Bb2 29.Nb2 Rc1 30.Qc1+-) 29.Bf6 bc4 30.Bc3 Qc6 31.Qd4 Qc7 32.Rb1 h6 (32...Rd8 33.Rb7! Rd4 34.Rc7+-) 33.Rb6 Rd8 34.Rb7! Rd4 (34...Qb7 35.Qd8 Deflection) 35.Rc7 Rd1 36.Kf2 Rd3 (36...g5 37.Rc4 Rc1 38.a3+-) 37.Bd4 (better 37.Rc4!? Rd6+-) 37...Rd2 38.Kg3 g5 39.Rg7 (better 39.Rc4 Ra2 40.Rc8 Kf7+-) 39...Kf8 40.Rc7 Ke8?? (40...Kg8 41.Rc4 Ra2 42.Rc8 Kf7+-) 41.Rc4+- Kf7 (41...Ra2 42.Rc8 Kd7 43.Rh8+-) 42.Rc6 (42.Ra4 Kg8+-) 42...h5 (42...f4 43.Kh2 Rd3 44.Rc3+-) 43.Ra6 h4 (43...f4 44.Kh2 Rd3 45.ef4 Rd4 46.fg5+-) 44.Kh2 Re2 (44...f4 45.Ra4+-) 45.Ra5 Kg6 46.Ra6 Kf7 47.a4 g4 (47...Ke8+-) 48.Rb6 (better 48.hg4 fg4 49.fg4+-) 48...g3 49.Kg1 Re1. LionMind (2420) - Peaudepailles (2620), Rated Bullet game, lichess.org, 2016. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4)

3.c4 e6 4.Nc3 (4.a3 a5 5.b5 d5=) 4...b6 (4...Bb4 5.Qb3 c5 6.e3-/+) 5.f4? (5.Qb3 d5 6.e3 Bd6=) 5...Bb7 (5...Bb4 6.Qb3 c5 7.dc5-/+) 6.e3 (better is 6.a3!?+=) 6...Bb4-/+ 7.Bb2 0-0 8.a3 Bd6 9.g4 c5-+ 10.g5? Bh1 11.dc5 Bc5 12.gf6 Qf6 13.Be2 Be3 14.Nf3 Qf4 15.Qd3 Bf3 16.Bf3 Qf3 17.Qe2 Qf4 18.Nd1 Qh4 19.Nf2 Bf4 20.Bc1 Bh2 21.Be3 Nc6 22.c5 Nd4 23.Bd4 Qd4 24.Rd1 Qc5 25.Ne4 Qa5 26.Rd2 Be5 27.Ng5 Bc3 28.Ne4 Bd2 29.Qd2 Qd2 30.Nd2 Rac8 0–1. envirrhyment (1650) – dmarsh (1680), net–chess.com, 2004.

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

3.e3 d5 4.c4 e5 (4...e6 5.c5=) 5.a3 (better is 5.de5!? Ng4 6.Nf3 Bb4 7.Bd2+=) 5...ed4-/+ 6.Qd4 c5 7.Qb2 Be7 8.Nd2 0-0 (8...Nc6 9.bc5 0-0 10.Ngf3+=) 9.Ngf3 Ne4 (9...Nc6 10.bc5 Re8 11.Be2+=) 10.Qb3 Bf6 11.Bb2 Nd2 12.Nd2 Bb2 13.Qb2 d4 14.ed4 Re8 15.Kd1 Qf6 16.Bd3 Nc6 17.Ne4 Bg4 18.Kc1 Re4 19.Be4 Qf4 20.Qd2 Qe4 21.f3 Bf3 22.Re1 Qd4 23.Qd4 Nd4 24.gf3 Nb3 25.Kb2 Na1 26.Re7 cb4 27.Rb7 ba3-/+ 28.Ka1 g6 29.Ka2 Rc8 30.Kb3 a5-+ 31.Rd7 a4! 32.Kb4 a2 33.Rd1 Rb8 34.Ka3 Rb3 35.Ka2 Rf3 36.Rd8 Kg7 37.Ra8 Rf2 38.Ka3 Rh2 39.Kb4 Rb2 40.Kc5? h5 41.Ra4 h4 42.Kd4 h3 43.c5 h2 44.Ra1 Rc2 45.Rh1 g5 46.Kd3 Rc5 47.Rh2 Re5 0–1. Pupols,V (2205) – Korchnoi,Viktor (2620), National Open, Las Vegas USA, 2007.

3.e3 d5 4.Nf3+=.

3.b5 Nb4 (3...Na5 4.Nf3=) 4.c4+= d5?? (4...a6 5.Qb3 e5+=) 5.Bd2+/– dc4 (5...e5!? 6.c5 a5+–) 6.Bb4+– e5 (6...Nd5 7.Bd2+–) 7.Bf8 (7.Bf8 Kf8 8.Nf3 ed4 9.Qd4 Qd4 10.Nd4+–) 1–0. Karl – Tgeah, internet private, 2018.

3.c3 e5 (3...d5 4.Nf3=) 4.e3 (4.b5!? Ne7 5.de5+=) 4...d6 (4...e4 5.d5 Ne5 6.f4 ef3 7.Nf3+=) 5.f4 (5.b5 Na5=) 5...Ne4 (5...Be6+=) 6.Qc2? (better is 6.Nf3!?=) 6...Bf5-/+ 7.g3?? (7.Bd3 Qh4 8.g3 Ng3 9.Nf3 Bd3 10.Qd3-+) 7...ed4 8.cd4?? Qf6 9.Na3?? d5 10.Rb1 Bb4 11.Rb4 Nb4 12.Qc7 Rc8 13.Bb5 Kf8 14.Qe5 Qe5 15.fe5 Rc1 16.Ke2 Bg4 17.Nf3 Rh1 18.h3 Rh2 19.Ke1 Bf3 20.Bf1 Ke7 e6 Rc8 22.Nc4 Nc2# 0–1. Henckell,Matthias (2000) – Jungkind,Roland (2125), remoteschach.de, 2002.

3.e3 Bb4 4.c3 Ba5?? 5.a4?? (5.de5!? Ng8 6.Nf3+=) 5...Ne4?? (5...ed4 6.ed4 Nc6 7.Qe2 Qe7 8.Qe7 Ne7 9.Bd3-+) 6.Ne2?? (6.Qg4 Nf6 (worse 6...Nc3 7.Bd2 Nb1 8.Ba5+/-) 7.Qd1 ed4 8.ed4 Nc6-+) 6...ed4?? (6...Nc6 7.de5 Qh4 8.g3-/+) 7.ed4? (better 7.Qd4 d5 8.Qg7=) 7...d5 (7...0-0 8.f3 Nf6 9.Ng3-+) 8.Ba3 (better 8.f3!? Nd6 9.Nf4-/+) 8...Qh4 9.g3 (9.Ng3 Nc6 10.Bb5 Nc3 11.Bc6 bc6-+) 9...Qf6 10.Bg2 (10.f4 Bg4 11.Qd3-+) 10…Qf2 0-1. Aleks - ALMAAKYY (2025), lichess.org, 2020. (=1.d4 Nf6 2.b4)

3.e3 Bb4 4.c3 Bd6 5.Nf3 ed4 6.Nd4 0-0 7.a4 c5 8.Nb5 Be7 9.Qb3 (9.Nd6!?-/+) 9...d5-+ 10.Bb2 c4 11.Qc2 Nc6 12.Nd4 Nd4 13.cd4 Be6 14.Be2 a6 15.0-0 b5 16.ab5 ab5 17.Ra8 Qa8 18.Nd2 b4 19.Ra1 Qb7 20.Nf3 c3 (20...Ne4 21.Qb1-+) 21.Bc1 Rc8 22.Rb1 Ne4 23.Ne5 f6 24.Nd3 Rb8 25.f3? (better 25.Qb3-+) 25...b3 26.Qd1 (26.fe4 bc2 27.Rb7 Rb7 28.ed5 Bd5 29.Bf3 Bf3 30.gf3-+) 26...c2 27.Qc2 bc2 28.Rb7 Rb7 29.fe4 de4 30.Nc5 (30.Kf2 Rb1 31.Ne1 Rc1 32.Nc2 Rc2 33.Kf1-+) 30...Bc5 31.dc5 Rb1 (31...Rb1 32.Kf2 Rc1-+) 0-1. Aleks - NiP198 (2010), lichess.org, 2020. (=1.d4 Nf6 2.b4)

3.de5 Ng4 4.a3 a5 5.b5 Ne5 6.Bb2 Nc4 7.Bc3 d5 8.e3 Bd6 (better 8...Qd7!?=) 9.Qd5+/- Be6? (better 9...Ne5!?+/-) 10.Qb7 (10.Qe4 Nb6 11.Bg7 Rg8 12.Qh7 f6 13.Qg6 Bf7+-) 10...Nd7? (better 10...Nb6 11.Qe4 0-0+-) 11.Bc4 Bc4 12.Qe4 (better 12.Bg7!? Rg8 13.Nd2 Be6+-) 12...Be6 13.Bg7 Rg8 14.Qh7?? (better 14.Bd4+-) 14...Ke7?? (14...Rg7 15.Qg7 Be5 16.Qg8 Nf8 17.Nf3 Ba1 18.Qg5=) 15.Nd2 (15.Nf3 Nf6 16.Bf6 Kf6 17.Qh4 Kg6+-) 15...Be5?? (better 15...Rg7 16.Qg7 Be5 17.Qg5 Bf6+=) 16.Be5+- Ne5 17.Ngf3 (17.Qe4 Nd7+-) 17...Ng6 (17...Qd5 18.Qh4 f6 19.c4 Nc4 20.Qh7 Kf8 21.Ne4 Rg2 22.Qh6 Kf7 23.Qf6 Kg8 24.Nfg5 Rg5 A) 25.Ng5 Qh1 26.Ke2 Bg4 27.Nf3 Bf3 28.Qf3 Qf3 (28...Qa1 29.Qa8 Kg7 30.Qg2 Kf6 31.Qf3 Ke7 32.Qe4 Ne5 33.f4 Qa2 34.Ke1 Qa1 35.Kf2 Qa2 36.Kg1 Qa1 37.Kg2 Qa2 38.Kh1 Qa1 39.Kg2 Qa2 40.Kg3 Qg8 41.Kf2 Qa2 42.Kg3 Qg8 43.Kf2 Qa2=) 29.Kf3 a4=+; B) 25.Qg5 Qg5 26.Ng5+-) 18.0-0 (18.Qh5 Ke8+-) 18...Qd5 19.e4 (better 19.c4!? Qb7+-) 19...Qb5 20.c4! Qc5 (20...Bc4 21.Rfc1 Decoy) 21.Rfd1 (21.Rfb1 Ne5+-) 21...a4 22.Nf1 (22.Nh4 Nf4 23.Nf5 Bf5 24.Qh4 Ke8 25.Qf4 Bh3+-) 22...Rad8 (22...Rh8 23.Qg7 Rag8 24.Qd4 Qd4 25.Nd4+- (25.Rd4?! Nf4 26.Kh1 c5+-)) 23.Ng3 (23.Ne3 Rd1 24.Rd1 Rd8 25.Nd5 Bd5 26.cd5 Qa3+-) 23...c6 (23...Rd1 24.Rd1 Rd8 25.Re1+-) 24.Nf5! Kf6 (24...Bf5 25.ef5 Combination) 25.Rd8 Rd8 26.Qg7 1-0. shkastnapazir13 (2435) - Peaudepailles (2710), Rated Blitz game, lichess.org, 2016.

3.de5 Ng4 4.a3 Ne5 5.Nc3 a5 6.b5 Bc5 (6...Be7 7.e4=) 7.Ne4 Bb6 8.Qd5 Qe7 9.Nf3 Nf3 (9...d6 10.Ne5 de5 11.e3=) 10.gf3 c6 (better is 10...d6!?=) 11.Nd6+/– Kf8 12.Qd1 (better is 12.Qd3 Bc7 13.Nc8+/–) 12...Qe5? (better is 12...Bc5!? 13.Nc8 Qd8+/–) 13.Nc8+– Qa1?? (13...Bc5 14.Be3! Qc3 15.Bd2 Qe5+/–) 14.Qd6 (14.Qd6 Kg8 15.Ne7 Kf8 16.Ng6 Ke8 17.Qe7) 1–0. ddd – fff, internet, 2009.

3.de5 Ng4 4.Qd4 d6 5.ed6 Bd6 6.Bb2 Nc6 7.Qg7 Bb4 8.c3 Qd4 9.Qd4 Nd4 10.cb4 Nc2 11.Kd2 Na1 12.Nh3 Bf5 13.Bh8 0-0-0 14.Kc1 Rh8 15.e4 Be4 16.f3 Bb1 17.fg4 Bg6 18.Nf4 Re8 19.Ng6 fg6 20.Bd3 c5 21.bc5 Re5 22.Kd2 Rc5 23.Ra1 Kd7 24.Rb1 b6 25.Rb5 Rc7 26.h4 Kc6 27.Rg5 Rd7 28.Kc3 1–0. Pupols – Weinstock, 1989.

3.b5 b6 4.Be2 Bb7 5.Bf3 Bf3 6.Nf3 d5 7.0-0 Nbd7 8.d4 e6 9.a4 Bd6 10.Bb2 0-0 11.Nbd2 Qe7 12.c4 Rac8 13.cd5 Nd5 14.Qb3 Nb4 15.Ba3 c5 16.Bb4 cb4 17.Ne4 Nf6 18.Nf6 Qf6 19.Rac1 e5 20.de5 Be5 21.Ne5 Qe5 22.g3 h6 23.h4 Rc3 24.Rc3 bc3 25.Qc4+= Rd8 26.Rc1 Rd2 27.Qc3 Qd6 28.Rf1 Ra2 29.Qc8 Kh7 30.Qc4 Qe6 31.Qe6 fe6 32.Rc1 Ra4 33.Rc6 Rb4 34.Rb6 a4 35.Ra6 Rb5 36.Ra4 Kg6 37.Kg2 Kf6 38.g4 g5 39.h5 Rb6? 40.Ra8 e5 41.Rg8 Kf7 42.Rh8 Kg7 43.Rd8 Re6 44.Kf3 e4 45.Ke2 Kf6 46.Rf8 Ke5 47.Rg8 Ra6 48.Rg6 Rg6 49.hg6 Kf6 50.Kd2 Kg6 51.Kc3 h5 52.gh5 Kh5 53.Kd4 Kh4 54.Ke4 Kg4 55.f3 Kg3 56.f4 g4 57.f5 Kh2 58.f6 g3 59.f7 g2 60.f8Q g1N 61.Qf2 Kh1 62.Qg1! Kg1 63.Kf3 Kf1 64.e4 Ke1 65.e5 Kd2 66.e6 Kd3 67.e7 Kd4 68.e8Q Kd5 69.Qe7 Kd4 70.Qe4 Kc5 71.Ke3 Kd6 72.Qf5 Kc6 73.Kd4 Kd6 74.Qf6 Kd7 75.Kc5 Ke8 76.Qg7 Kd8 77.Kd6 (77.Kd6 Ke8 78.Qe7) 1–0. ludice (1715) – frinkfer (1730), kurnik, 2011.

3.b5 e5 4.c4 c6 5.a4 Bb4 6.Bb2 Qe7 7.Nf3 d6 8.Be2 0-0 9.0-0 Bf5 10.d4 e4 11.Nfd2 Nbd7 12.Nc3 Rfe8 (12...Nb6 13.Qc2=) 13.Qb3 (13.g4!? Be6 14.bc6 bc6 15.g5 Bc3 16.Bc3+=) 13...d5 14.cd5 cd5 15.Ba3 (15.Nd5?! Nd5 16.Qd5 Bg6+/–) 15...Ba3 16.Qa3 Nb6 17.Qe7 Re7 18.Rfc1 Rc7 19.Nb3 Rac8 20.Nc5 Nfd7 21.Nd7 Bd7 22.Ra3 Kf8 23.Kf1 Ke7 24.Ke1= Kd6 25.Kd2 Nc4 26.Bc4 Rc4 27.Na2 Rc1 28.Nc1 Rc4 29.Na2 f5 30.Nc3 Rb4 31.Ra2 g5 32.Kc2 f4 33.Rb2 Rc4 34.Kd2 fe3 35.fe3 Bg4 36.Rb1 h5 37.Rf1 Rb4 38.Kc2 Be2?? 39.Ne2 Ra4 40.Nc3 Rc4 41.Rf6 Ke7 42.Rf5 a4 43.Rd5 a3 44.Kb3 Rc8 45.Rc5 Ra8 46.Na2 Kd6 47.Rg5 Rf8 48.Ka3 Rf2 49.Nc3 Rc2 50.Ne4 Ke6 51.Nc5 Ke7 52.Kb3 Re2 53.Re5 Kd6 54.g3 Rh2 55.Kc4 Kc7 56.Re7 Kb8 57.Rb7 Ka8 58.Rd7 h4 59.d5 hg3 60.d6 g2 61.Rg7 g1Q 62.Rg1 Rc2 63.Kd5 Rd2 64.Kc6 Kb8 65.Rg8 Ka7 66.d7 (66.d7 Rd6 67.Kd6 Kb6 68.d8Q Kb5 69.Rg2 Kc4 70.Qb6 Kc3 71.Qb3; 66.b6) 1–0. ludice (1685) – theantropos (1790), kurnik, 2011.

3.a3 g6 4.Bb2 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 a6).

3.c4 e5=+ 4.Bb2 Bb4 5.Be5 Nc6 6.Bc3 0-0 7.Nf3 d5 8.Bb4 Nb4 9.Qb3 c5 10.a3 Nc6 11.cd5=+ Nd5 12.Nc3 Nf6 13.Na4 Bg4 14.Nc5+= Na5 15.Qd1 Bf3 16.Qf3+/– Qe7 ½–½. Rainer,Jean_Michel – Schreber,Daniel Paul, or01–010 E–mail, 2001.

3.d3 e6 4.c4 (4.c3!?+=) 4...Bb4-/+ 5.Bd2 Bd2 6.Kd2 (6.Nd2!? e5 7.Ngf3-/+) 6...0-0 7.Nc3 d5 0–1. AGARZA (1795) – Fournier,Frederic (1785), Active (5/0), 2004.

3.Nf3 d5=.

3.Bb2 e6 4.a3 Bb7 5.Nf3 c5 6.b5 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3 Bb7).

3.Be2 Bb7 4.Bf3 Nc6 5.b5 Na5 6.Bb7 Nb7 7.Bb2 e6 8.c4 g6?? (8...Nc5 9.Qc2=) 9.Bf6 (better is 9.Qf3 Bg7 10.Qb7+–) 9...Qf6= 10.d4 Bb4 11.Nd2 c5 12.a3 Ba5 13.Ngf3 cd4 14.Nd4 Nc5 15.0-0 0-0 16.N2b3 Bc3 17.Rb1 Rfd8 18.Nc5 bc5 19.Ne2 Qg5?? 20.Nc3+– d5 21.cd5 ed5 22.Ne2 Rd7 23.a4 Rad8 24.a5 d4 25.ed4 cd4 26.b6 Qa5 27.ba7 Qa7 28.Qd3 Qc5 29.Rfc1 Qe5 30.g3 Re7 31.Nf4 g5?! 32.Ng2 h5 33.h4 Qf6 34.hg5 Qg5 35.Nh4 Re5 36.Re1 Red5 37.Rbd1 Kg7 38.Qe4 Kh6? 39.Rd3 Rg8 40.Rd4 Rc5 41.Red1 f5 42.Nf5! Rf5 43.Rd6 (43.Rd6 Rg6 44.Qe8 Rd6 45.Rd6 Rf6 46.Qf8 Kg6 47.Rf6 Qf6 48.Qf6 Kf6 49.Kg2+–) 1–0. ludice (1680) – necrolust (1615), kurnik, 2011.

3.Be2 Bb7 4.Bf3 d5 5.Bb2 e6 6.a3 Be7 7.c4 c6 8.Nc3 0-0 9.cd5 cd5 10.d4 Nbd7 11.Nge2 Ne4 12.Be4 de4 13.Ng3 f5 14.0-0 Nf6 15.Qb3 Nd5 16.Nd5 Bd5 17.Qd1 Bd6 18.Qd2 Rf6 19.Rac1 Rh6 20.h3 Qg5 21.Ne2? Rh3-+ 22.Nf4 Bf4 23.ef4 Qg6 24.Rc3 e3 (24...e3 25.fe3 Bg2 26.Qg2 Rg3-+) 0–1. ludice (1640) – vallejos, kurnik, 2011.

3.Be2 Bb7 4.Bf3 d5 5.c4 c6 6.Ne2 (6.cd5 cd5 7.d4 e6+=) 6...e6 (6...e5 7.Nec3 Bb4 8.Qa4 Bc3 9.Nc3-/+) 7.a3 Nbd7 (7...e5 8.Ng3 dc4 9.Bb2-/+) 8.Bb2 Be7 (8...dc4 9.Qc2-/+) 9.cd5 cd5 10.Bf6 Bf6 11.d4 0-0 12.0-0 Rc8 13.Qb3 Ba6 14.Re1 Bc4 15.Qb2 b5 16.a4 a6 17.ab5 ab5 18.Ra5 Nb6 19.Nec3 e5 20.Nb5 ed4 21.ed4 Bb5 22.Rb5 Nc4 23.Qe2 Re8 24.Qe8 Qe8 25.Re8 Re8 26.Kf1 Rd8 27.Bd5 Nd6 28.Rc5 Bd4 29.Rc7 Ne8 30.Bf7+– Kf8 31.Be8 Re8 32.Nd2 Kg8 33.Nf3 Bb2 34.g3 Rd8 35.Kg2 h6 36.b5 Rb8 37.Rc5 Ba3 38.Rd5 Rb6 39.Nd4 Bb2 40.Nf5 Kf7 41.Rd7?? Kg6?? 42.Ng7?? Bg7+= 43.Rd5 Kf6 44.f4 Ke6 45.Rc5 Bf8 46.Rc6 Rc6= 47.bc6 Kd6 48.Kf3 Kc6 49.g4 Kd6 50.g5+/– h5 51.Kg3 Ke6 52.Kh4 Kf5 53.Kh5 Kf4 54.h4 Kf5 55.g6 Kf6 56.g7 Kg7 57.Kg4 Kh6 58.h5 Kh7 59.h6 Bb4 60.Kf5 Be1 61.Kf6 Bf2 62.Kf7 Bg1 63.Kf6 Bh2 64.Kf7 Bf4 65.Kf6 Bc1 66.Kf7 Bb2 67.Ke6 Bc1 68.Ke7 Bg5 69.Ke6 Bh4 70.Kf7 Bd8 71.Kf8 Bc7 72.Kf7 Ba5 73.Kf8 Bb4 74.Kf7 Bc3 75.Ke7 Ba1 76.Ke6 Bh8 77.Ke7 Bb2 78.Ke6 Bc1 79.Ke7 Be3 0–1. ludice (1750) – ninzomaster (1715), kurnik, 2011.

3.Ba6?? Na6 4.bc5 Nc5 5.Bb2 -+.

3.Ba6?? g5 4.Qf3?? Ng8 5.d3?? f5?? 6.Qe4 d5 7.Kd1?? c4 8.Ke1?? Nc6 9.Qd4 Kf7 10.Nf3 Ke8 (better is 10...Nd4 11.ed4 ba6 12.dc4 dc4 13.Bg5 Bg7-+) ½–½. Benko,Pal C (2425) – Orgovan,Sandor (2330), HUN tt, 1996.

3.bc5!? Qa5 4.Bb2+=.

3.a3 e5 4.e3 Bd6 5.d3 (5.c4 dc4 6.Bc4 a5-/+) 5...0-0 6.Bb2 a6 7.h3 (7.Ne2 a5 8.b5 Re8-/+) 7...Be6 8.e4 (8.c4 dc4 9.dc4 Nh5-+) 8...d4 9.c3 dc3 10.Bc3 Nc6 11.Nd2 (11.Ne2 Re8-/+) 11...Re8 (better 11...Nh5!? 12.h4 Be7-+) 12.Nc4-/+ Bc4 (12...Nh5 13.Nd6 Qh4 14.Kd2 cd6 15.Ne2-+) 13.dc4 b6 (13...Nh5 14.h4-/+) 14.Qd3 (14.Ne2 Qe7=+) 14...Qd7 (14...Nh5 15.h4-/+) 15.g4 g5?? (better 15...Red8=+) 16.h4 h6 17.0-0-0 (17.hg5 hg5 18.Qd2 Bf8 19.Qg5 Bg7+-) 17...Red8 (17...Qe6 18.hg5 hg5 19.Qe3+-) 18.hg5+- hg5 19.Rd2 (19.Qd2 Kf8+-) 19...Kf8 (19...Nd4 20.Qe3 (20.Bd4?! ed4 21.Nh3 Qa4=) 20...Nh7 21.Rdh2+- (21.Bd4 ed4 22.Qd3 Bf4-/+)) 20.Qe3+- Ke7 (20...Qe7 21.Qg5 Ng8 22.Qe7 Ke7 23.Kc2+-) 21.Qg5 (21.Ne2 Qe6 22.Ng3 Rh8 23.Rh8 Rh8+-) 21...Rg8? (21...Qe6 22.Qh6 Rh8 23.Qh8 Rh8 24.Rh8 Ne4 25.fe4 Qf6-/+) 22.Qf5?? (better 22.Qe3 Nd4 23.Bd4 ed4 24.Rd4+-) 22...Qf5+= 23.ef5 Rh8 (23...a5 24.b5 Ba3 25.Kc2 Nd4 26.Bd4 ed4 27.Ne2+-) 24.Bg2 (24.Rh8 Rh8 25.g5 Nh5+-) 24...Rh1 25.Bh1 Rh8 26.Bg2 e4? (26...Nd4!? 27.Kb2 c5+-) 27.Re2 (better 27.g5!? Be5 28.Be5 Ne5 29.gf6 Kf6 30.fe4 Nc4+-) 27...Bf4 28.Kb2 (28.Kb1 Rh4+-) 28...e3 (28...Ne5!? 29.Kb3 Rh2+-) 29.Nh3+- Rh3 30.Bh3 Ne8 (30...Ne5 31.Be5 Be5 32.Kc2+-) 31.Rg2 (31.Kc2 b5+-) 31...Ne5 (31...Nd6 32.Kb3+-) 32.Be5 Be5 33.Kb3 (33.Kc2 Nd6 34.Kd3 c5+-) 33...Bf4 (33...f6 34.Re2 Bf4 35.Kc3+-) 34.g5 c5 35.f6 Kd6 36.Kc2 Nc7 (36...Ke5+-) 37.Kd3 Ke5 (37...cb4 38.ab4 Ne6 39.Be6 Ke6+-) 38.g6 fg6 (38...e2 39.Ke2 fg6 40.f7+-) 39.f7 Bh6 40.Rg6 Bf8 41.Rb6 (41.Ke3 Nd5 42.cd5 Kd5 43.Rb6 cb4 44.ab4 Kc4 45.Bf1 Kc3+-) 41...cb4 42.ab4 e2 (42...Kf4 43.Rb8 Bg7 44.Bg4+-) 43.Ke2 Kd4 44.c5 (better 44.Rc6 Nb5 45.cb5 ab5+-) 44...Nd5 45.Rb8 Be7 (45...Bg7 46.Rd8 Ke5 47.c6+-) 46.f8Q (46.f8Q Bf8 47.Rf8 Nb4 48.f4+-; better 46.Re8 Nf4 47.Kd1+-) 1-0. Delboy Smith (1770) - Ainer (1835), ChessWorld.net, 2014.

3.a3 Bf5 4.d4 e6 5.Qd2 Bd6 6.Nc3 c6 7.e3 0-0 8.Bb2 (8.g4 Bg6=+) 8...Nbd7 (8...a5 9.b5-/+) 9.Nce2 (9.g4 Bg6-/+) 9...Qc7 (9...a5 10.Ng3-/+) 10.0-0-0? (better 10.g4!? Ng4 11.e4 Bh2 12.Nh3=+ (12.fg4? Be4 13.Rh2 Qh2-+)) 10…a5-+ (10...a5 11.c3 ab4 12.cb4 Bg6-+) 0-1. Delboy Smith (1735) - jaghund (1635), ChessWorld.net, 2011.

3.c4 dc4 4.Qc2 (4.Nc3 a6-/+) 4...b5 (better 4...Nc6!? 5.b5 Nb4-+) 5.Nc3-/+ e6 (better 5...Qd7 6.a4 Na6-/+) 6.a3? (6.Nb5!? a6 7.Na3-/+) 6...Qd7 (6...a5 7.ba5 Ra5 8.Nh3-+) 7.a4 (7.Bb2-/+) 7...Bb4 (better 7...Nc6!? 8.ab5 Nb4-/+) 8.ab5-/+ Nd5 (8...0-0 9.e3=) 9.Nd5 (9.Qb2 Bf8=) 9...Qd5 (9...ed5 10.Qb2 Bf8 11.d3=+) 10.Bb2 0-0 11.Ba3 (11.e3!? Rd8 12.Bc3=+) 11...Ba3-/+ 12.Ra3 Qb5 (12...Nd7 13.e4 Qd6 14.Ra2-/+) 13.e4 Attacking the isolated pawn on c4 (13.e3 Ba6 14.Rc3=+) 13...f5 (better 13...Nc6!? 14.Qc4 Qc4 15.Bc4 Rb8-/+) 14.Bc4= Qe5 15.Bd3 (better 15.Re3 Qa1 16.Qd1=) 15...Nc6?? (better 15...Qd6 16.Qc3 Nc6-/+) 16.Qc6+- Rb8 17.Ne2 Qb2 (17...fe4 18.Qe4 Qe4 19.Be4+-) 18.Ra7 Qb3 (18...Rb3 19.Bc4 Rb6 20.Qc7 fe4 21.0-0+-) 19.Nf4 fe4 (19...Qb6 20.Qb6 cb6 21.ef5 ef5 22.Kf2+-) 20.Qe4 Bb7 (20...Rf5 21.Rc7 Qb6+-) 21.Qh7 Kf7 22.Qh5 Ke7 23.Qc5 (23.Ng6!? Kd8 24.Ke2 Qb6 25.Rb7 Rb7 26.Nf8 c5+-) 23...Kf7 24.0-0 (24.Bc4 Qb6 25.Qf5 Ke7 26.Ng6 Kd7 27.Nf8 Rf8 28.Qf8 Qa7 29.Qf7 Kd8 30.Qg8 Ke7 31.Qe6 Kd8+-) 24...Qb6 25.Qb6 cb6 26.Bg6 (better 26.Rb1 Kg8 27.Ne6 Rfc8+-) 26...Ke7 27.Be4 Rf4 28.Rb7 (28.Rb1!? Kf6 29.Rb6 Be4 30.Rb8 Bd5 31.Rf8 Ke5 32.Rf4 Kf4 33.Rg7 Kf5+-) 28...Rb7 29.Bb7 Rd4 30.Rf2 (30.Rb1 Rd2 31.Rb6 g5+-) 30...Ra4 31.h3 (31.d3 Rb4+-) 31...g5 (31...b5 32.d3+-) 32.Re2 b5 (32...Kd6 33.Kf2+-) 33.Bc6 (33.Bc8 Kd6 34.Re6 Kc7+-) 33...Ra1 (33...Ra5 34.Bd5 Ra1 35.Kf2+-) 34.Kf2 Rb1 (34...b4 35.Bd5 Ra6 36.Bb3+-) 35.d4 (35.Bd5 Kd6 36.Be6 Rb2+-) 35...b4 (35...Kd6 36.Be4 Rb4 37.Rd2+-) 36.d5 b3 (36...e5 37.Re5 Kd6 38.Rg5+-) 37.Re6 Kf8 (37...Kf7 38.Ba4+-) 38.d6 Rb2 (38...b2 39.Re8 Kf7 40.Rb8+-) 39.Kg3 (better 39.Ke3 Rb1 40.Re8 Kf7 41.d7+-) 39...Rd2 40.Be4 (better 40.Re8 Kf7 41.d7 b2+-) 40...Kf7 (40...b2+-) 41.Re7 Kf6 42.Rb7 b2 (42...Rd6 43.Rb3 Rd2 44.Rb6 Ke5 45.Rb5 Kf6 46.Rf5 Ke6 47.Rg5+-) 43.d7 Ke7 (43...Ke6 44.Rb2! Rd7 45.Kg4+-) 44.Kg4 (44.Bf5 Rd5 45.Kg4 Rd2+-) 44...Kf6 (44...Rd7 45.Rb2 Rd1 46.Kg5+-) 45.g3 Rd7 (45...Rd4 46.Rb6 Ke5 47.Rb2 Rd7 48.Rb5 Kf6 49.Rb6 Ke5 50.Kg5+-) 46.Rb6 (46.Rd7 Ke6 47.Bf5 Kf6 48.Rd2 b1Q 49.Bb1 Kg7 50.Rd7 Kf8 51.Bg6 Kg8 52.Kg5 Kf8 53.Kf6 Kg8 54.Rd8) 46...Ke7 (46...Ke5 47.Rb2 Rc7 48.Kg5+-) 47.Rb2 Rd8 (47...Kf6 48.Rb5+-) 48.Kg5 Rg8 49.Kf4 Rf8 (49...Rh8 50.h4 Rh5 51.Kg4+-) 50.Ke3 (50.Ke5 Kf7+-) 50...Rh8 (50...Rg8 51.Kf2+-) 51.h4 Kf6 (51...Kd6 52.f4+-) 52.f4 Ke7 (52...Rg8 53.Rb6 Ke7 54.f5+-) 53.Rb5 Kd6 (53...Rg8 54.Rg5 Rh8 55.h5+-) 54.Rd5 Ke6 55.f5 Kf6 56.Kf4 Rc8 57.g4 Rc1 58.g5 Ke7 (58...Kf7 59.Ke5 Rc7 60.f6 Rc3 61.g6 Ke8 62.g7 Rg3 63.Rd1 Rg7 64.fg7 Kf7 65.Rd7 Kg8 66.Bd5 Kh7 67.g8Q Kh6 68.Qg5) 59.Ke5 Rh1 (59...Rc8 60.f6 Kf8 61.g6 Rb8 62.g7 Kg8 63.Rd7 Re8 64.Re7 Re7 65.fe7 Kf7 66.g8Q Ke7 67.Qg7 Ke8 68.Ke6 Kd8 69.Qd7) 60.f6 Kf8 (60...Kf7 61.g6 Ke8 62.Bh1 Kf8 63.Rd8) 61.Bh1 (61.Bh1 Kf7 62.Be4 Kf8 63.Rd8 Kf7 64.g6; 61.Rd8 Kf7 62.g6) 1-0. Shocker36 (1765) - davy_shug (1835), ChessWorld.net, 2013.

3.e3 e5 4.Bb2 Nbd7 5.b5 Bd6 6.a4 0-0 7.g3 Qe7 8.Nh3 a6 9.ba6 ba6 10.Nf2 Rb8 11.Bc3 d4 12.Bb2 Rb2 13.Bg2 de3 14.de3 Bb4 15.c3 Bc5 16.Qc1 Rf2 17.Kf2 e4 18.fe4 Ne4 19.Be4 Qe4 20.Re1 Ne5 21.Rd1 Be3 22.Qe3 Ng4 White resigned 0-1. themuttsknutts - powerangers (2550), ChessWorld.net, 2014.

2.Nf3 (--> 1.b4 Nf6 2.Nf3).

2.Nf3 d5 3.d4 e6 4.a3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d4).

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

2.Nf3 e6 3.a3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3).

2.Nf3 g6 3.Bb2 Bg7 4.e4 0-0 5.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0-0 5.e4).

3.Nc3 Nf4 4.e3-/+.

3.e3 Nb4 4.Bb2 d6 5.a3 Nd5 6.Nf3 Nc6 7.Nc3 Nc3 8.Bc3 Rb8 9.Bb5 a6 10.Bd3 d5 11.0-0 Bg4 12.Qe1 e6 13.Qg3=+.

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.g3).

3.Bb2 Bg7 4.e4 0-0 5.Bg2 (--> 1.b4 Nf6 2.Bb2 g6 3.g3 Bg7 4.Bg2 0-0 5.e4).

3.Bb2 Bg7 4.Bg2 0-0 5.e4 d6 6.Ne2 e5 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e4 d6 5.g3 0-0 6.Bg2 e5 7.Ne2).

3.c3 Bg7 4.Bb2 d5 5.Bg2 0-0 6.Nf3 Nbd7 7.Qc2 e5 (7...e5 8.0-0 Re8=+). athan – rhand (2105), net–chess.com, 2004.

3.g5 Bb4?? 4.gf6 (4.c3 Be7 5.gf6 Bf6+/-) 4...Qf6 5.Bg2?? (better 5.c3+/-) 5...Bc5 (5...Qa1 6.a3-+) 6.e3 Qa1 7.Nc3 Nc6 8.Na4 (8.Nge2 d5-+) 8...Bb6 (8...Bb4 9.Bc6 dc6 10.Bb2 Qa2 11.Bg7-+) 9.Bb2 Qd1 (9...Qa2 10.Bc6 bc6 11.Bg7-+) 10.Kd1 d5 11.Bg7 (11.c4 Ne7 12.cd5 ed5 13.Ne2-+) 11...Rg8 12.Nb6 (12.Bd5 ed5 13.Bc3 d4 14.ed4 Bd4 15.Bd4 Nd4-+) 12...ab6 (12...Rg7?! 13.Na8 Rg2 14.Nc7 Kd7 15.Nb5-/+) 13.Be5 (13.Bd5 ed5 14.Bc3 Ra2-+) 13...Rg2 (13...Ne5 14.Bh3-+) 14.Bc7 Rf2 (14...Ra2 15.Ne2 e5 16.h3-+) 15.Bb6 (15.Nh3 Rf6 16.Ke2 Ra2-+) 15...Ra2 16.e4 (16.Ne2 e5 17.Nc1-+) 16…Ra1 0-1. Agiant (1620) - Misak53 (1605), lichess.org, 2019.

3.g5 Ne4 4.Nc3 d5-/+ (worse 4...Ng5 5.h4+=).

3.g5 Ng8 4.h4 h6 5.gh6 Nh6 6.Bb2 d6 7.Nf3 Nd7 8.Bg2 (8.e4 Nf6 9.Nc3 e5=+) 8...Nf6 9.d3 Be7 10.Nd4 (10.c4!?=+) 10...e5-/+ 11.Nf3 c6 12.d4? (12.a3 Nh5-/+) 12...Nd7 (better 12...e4 13.Ng5 d5-+) 13.de5=+ Ne5 (13...de5 14.a3=+) 14.Ne5= de5 15.Qd8 Kd8 16.Be5 f6 (16...Bb4 17.c3 Bf8 18.Nd2=) 17.Bb2 (17.Bc3!?+=) 17...Bb4= 18.Nd2 Bf5 19.c3 Bc5 20.Rd1 Kc7 21.e4 (21.Ne4!? Be7 22.Bc1=) 21...Be6 22.Nb3 Bb6 (22...Bb3 23.ab3 Ng4 24.0-0-/+) 23.Nd4 (23.Bc1 Ng4 24.Bf4 Ne5=) 23...Bc4 (23...Ba2 24.h5-/+) 24.Bf1 (24.Bc1!? Nf7 25.Bf4 Ne5 26.Rd2=) 24...Ba2=+ 25.c4? (better 25.Rg1 Rh7 26.Bc1 Bd4 27.Rd4=+) 25...Rad8?? (better 25...Ba5 26.Ke2 Bc4 27.Kf3 Bf7-+) 26.Ne6+/- Kc8 27.Nd8 (27.Rd8?! Bd8 28.Rg1 Re8 29.Nd8 Re4 30.Kd2 Re7=) 27...Rd8 (27...Ba5 28.Ke2 Bc4 29.Kf3 Bf1 30.Nb7 (30.Rhf1?! Bd8 31.Rg1 Rh7=) 30...Kb7 31.Rd7 (31.Rdf1?! Nf7+/-) 31...Kc8 32.Ra7+-) 28.Rd8 Kd8 (better 28...Bd8 29.Bh3 Kc7+/-) 29.Bh3 (29.Rg1 f5+-) 29...Bc4 (29...Ke7!? 30.Rg1 Kf7+=) 30.Rg1+/- Ba5 (30...Ke7 31.Rg7 Nf7 32.h5 Ba5 33.Kd1 Bb3 34.Kc1+-) 31.Kd1+- Bd3? (31...Bb4 32.Rg7 Be7 33.Rg6+-) 32.Kc1?? (better 32.Rg7 f5 33.f3+-) 32...Be4+/- 33.Rg7 Bb6?? (better 33...f5 34.Bd4 b5+/-) 34.Bf6+- Ke8 35.Re7 Kf8 36.Re4 Bf2 37.Bd7 Kf7 (37...Bc5+-) 38.Bg5 1-0. EvgeniyR (1650) - John_turner (1660), Rated Blitz game, lichess.org, 2020.

3.g5 Nh5 4.Bb2 (better 4.Nh3=+) 4...g6?? (better 4...Qg5 5.a3 d5-/+) 5.Bh8+- Qg5 6.e4 (6.Nf3 Qd8 7.a3 Be7+-) 6...a5 (6...Bb4 7.a3 Qh4 8.Qe2+- (8.ab4?! Qe4 9.Ne2 Qh1+=)) 7.ba5 Qa5 8.Nc3 d5 9.ed5 ed5 10.Be2 Bg7 11.Bg7 Ng7 12.Nf3 c6 13.d4 (13.0-0 Ne6+-) 13...Nf5?? (better 13...Qc3 14.Kf1 Bf5=+) 14.Ne5 (better 14.Qd2 b5+-) 14...Nd7?? (better 14...Qc3 15.Kf1 Nd4-+) 15.Nd7?? (15.Qd2 Ne5 16.de5 d4+-) 15...Bd7?? (15...Qc3 16.Kf1 Bd7 17.Qe1 Qd4 18.Rg1-/+) 16.Bd3 (16.Qd2 Qa7+-) 16...Nd6?? (better 16...Qc3 17.Kf1 Qd4-/+) 17.0-0 (17.Qd2 Bh3+-) 17...Bf5?? (better 17...Qc3 18.Qe1 Qe1 19.Rfe1 Kd8=) 18.Re1 Kf8 19.Bf5 Nf5 20.Rb1 (20.Ne2 Nh4 21.Qd3 Qd2+-) 20...Qc7?? (better 20...Qc3 21.Rb7 Ra2=) 21.Rb2 Re8 (21...b5 22.Qd2+-) 22.Re8 Ke8 23.Qf3 (23.Qd2 Kf8+-) 23...Kf8 (23...Nd4 24.Qf6 Ne6 25.a4+-) 24.Ne2 Qe7 25.Ng3 (25.Rb6 Kg7+-) 25...Ng3 (25...Qe1 26.Nf1 Nd4 27.Qf6 Ne2 28.Kg2+-) 26.fg3 Qe1 27.Qf1 (27.Kg2 Qd2 28.Qf2 Qf2 29.Kf2 b5+-) 27...Qc3 (27...Qe3 28.Kg2 b5 29.Qf2+-) 28.Rb1 (better 28.Rb7 Qd4 29.Qf2 Qf2 30.Kf2 Ke8+-) 28...Qd4 29.Qf2 Qe5 (29...Qf2 30.Kf2 b5 31.a4 ba4 32.Rb6+-) 30.Rf1 (30.Rb7 Qe6+-) 30...Kg7 (30...Qe7+-) 31.Qf7 Kh6 32.Qf4 Qf4 33.Rf4 Kg7 34.g4 (34.a4 c5+-) 34...c5 35.g5 d4 36.h4 h6 37.Rf7 (better 37.Rf6+-) 37...Kf7-+ 38.gh6 Kg8 39.h7 Kh7 0-1. EvgeniyR (1640) - Zaplya (2095), Hourly Bullet Arena, lichess.org, 2018.

3.Nf3 c6 4.Ba3 (4.a3 d5-/+) 4...Qb6 5.b5?? (better is 5.e3-/+) 5...Qf2 0–1. johnboysefton – darthchess, net–chess.com, 2007.

3.Bg2 Nf6 4.h4 e6 5.h5 (5.a3 d5-/+) 5...h6 (5...Bb4 6.e4-+) 6.b5 d5 7.a4 Bd6 8.Bb2 a6 9.b6 (9.Nc3-+) 9...cb6 10.e3 Nc6 11.d3 e5 12.Nd2 Bg4 13.Ne2 Bh5 (13...Rc8 14.Rc1-+) 14.f3 (14.Bd5 Be2 15.Bc6 bc6 16.Qe2 Ra7-+) 14...Bg6 15.Nf1 b5 (15...Rc8!? 16.Rb1-+) 16.ab5 ab5 17.Rb1 b4 18.c4 (18.f4-+) 18...dc4 19.dc4 Bc5 (better 19...Bb1 20.Qb1 b3-+) 20.Qb3 (20.Qd8 Rd8 21.e4-+) 20...Bb1 21.Be5 (21.f4 Ba2 22.Qc2-+) 21...Ne5 22.Qb1 Nd3 23.Kd2 Nf2 (better 23...Nf4 24.Nd4 Ng2-+) 24.Kc2 (24.Ke1 Nh1 25.Bh1 Nh5 26.Qe4 Qe7-+) 24...Nh1 (24...Qd3 25.Kb2 Qe2 26.Nd2 Qd2 27.Qc2 Ra2 28.Ka2 Qc2 29.Ka1 Nd3 30.Rh6 Qb2) 25.Qd1 Qd1 (25...b3 26.Kc3 Qd1 27.Nd4 Qc1 28.Kd3 Nf2 29.Ke2 Ra2 30.Nc2 Rc2 31.Nd2 Rd2) 26.Kd1-+ Nf2 27.Ke1 Nd3 28.Kd2 Nb2 29.Kc2 Nc4 30.Kb3 Ne3 (better 30...b5 31.f4 Ra3 32.Kc2 b3 33.Kb1-+) 31.Nd2 Ra3 32.Kb2 0-0 33.Bh3 Rd8 34.Nc4 Nc4 35.Kc2 (35.Kb1 Rb3 36.Kc1 Be3 37.Kc2 Rb2) 35...Rd2 36.Kc1 (36.Kb1 Rb2 37.Kc1 Ra1) 36…Ra1 0-1. banistyle (1975) - CBK1 (2075), lichess.org, 2020.

3.a3 d5 4.d4 ed4 5.Qd4 c5 6.bc5 Nc6 7.Qc3 d4 8.Qd3 Bc5 9.Bg5 h6 10.Bh4 0-0 11.Nf3 Re8 12.Nbd2 Qe7 13.g4 Ne5 14.Ne5 Qe5 15.Nf3 Qd6 16.g5 hg5 17.Bg5 Ne4 18.Bh4 (18.Bg2!?-/+) 18...Bf5 19.Ng5?? (19.Rg1 Bg6 20.Qb3 Bh5-+) 19...Qh6 (better is 19...Qf4 20.Bg2 Ng5 21.Qg3 Qg3 22.Bg3-+) 20.Ne4?? (better is 20.Nf3-+) 20...Be4 (20...Re4?! 21.Bg3 Re3 22.Qd2 (22.Qf5?? Ra3 23.e3 Bb4 24.Kd1 Ra1 25.Ke2 Re1 26.Kf3 de3-+) 22...Ra3 23.Ra3 Qd2 24.Kd2 Bb4 25.c3 dc3 26.Rc3 Rd8 27.Kc1 Bc3 28.Bg2-+) 21.Qg3 Bh1 22.Bg5 Qg6 23.Kd2 (23.h4 Rac8-+) 23...f6 (better is 23...Bd6 24.Bf4 Rac8 25.Ra2-+) 24.Bg2 (24.Qb3 Kh7 25.Bf4 Be4-+) 24...Bg2 25.Qg2 Qg5 26.Qg5 fg5 27.f3 (27.Kd3 Re6-+) 27...Re7 28.a4 (28.Rb1 Rae8 29.Kd1 Bd6-+) 28...Rae8 29.e4 de3 30.Ke2 Rd7 31.Rd1 Rd1 32.Kd1 (32.a5 Rd2 33.Ke1 e2 34.Kd2 e1Q 35.Kd3 Rd8 36.Kc4 Qb4) 32...Rd8 (32...e2 33.Ke1 Bb4 34.c3 Bc3 35.Kf2 e1Q 36.Kg2 Re2) 33.Ke1 (33.Kc1 e2 34.Kb2 e1Q 35.h4 Qb4 36.Ka2 Qa3 37.Kb1 Rd1) 33...Rd2 34.c3 Rf2 (34...Bd6 35.f4 gf4 36.c4 f3 37.a5 Bg3 38.Kf1 Rd1) 35.c4 Bb4 36.Kd1 e2 37.Kc2 e1Q 38.Kb3 (38.Kd3 Rd2) 38...Qc3 0–1. valerypavlovich (2210) – wvmaniac (2665), net–chess.com, 2016.

3.b5 b6 4.a3 (4.Bb2 a6=+) 4...Bb7 (4...a6 5.e3-/+) 5.Bb2 (5.Nf3 a6-/+) 5...d6 6.e3 Be7 7.Nf3 0-0 (7...a6 8.d4 e4 9.Nfd2-/+) 8.Be2 Nbd7 (8...a6 9.a4-/+) 9.0-0 (9.d4 e4 10.Nfd2 d5=+) 9...Nc5 (9...a6 10.c4=+) 10.d4 (10.Nc3 Ne6=) 10...Na4 (10...ed4 11.Bd4 a6 12.a4=+) 11.Qc1 Nb2 12.Qb2 ed4 13.ed4 c6 14.Nbd2 cb5 15.Bb5 Ne4 16.Ne4= Be4 17.Rae1? Bf3-/+ 18.gf3 Bf6 19.Bc6 Rc8-/+ 20.Be4 Rc4 21.c3 Qc8 22.Kh2 Rc3-+ 23.Qb1 g6 24.Rg1?! Bd4 25.Bg6 Bf2 26.Bf5+– (26...Bg1 27.Rg1 Kh8 28.Bc8 Rcc8 29.Qf5+–) 1–0. night1 – Blacknight, Live Game Caissa's Web, 2006.

3.b5 d5 4.e3 Bd7 5.a4 (5.Bb2 Bd6=+) 5...c5 (5...Bf5 6.Nf3 Bd6 7.d4=+) 6.c4 (6.d4 ed4 7.ed4 a6 8.Qe2 Be7 9.dc5 ab5-/+) 6...Be7 (6...Be6 7.cd5 Nd5 8.Bb2-/+) 7.Be2 (7.cd5 Nd5 8.Bb2 f6=) 7...0-0 (7...Be6 8.Bb2-/+) 8.Nf3 Bd6 (8...e4 9.Ne5-/+) 9.Nh2 (9.d4 cd4 10.ed4 e4=+) 9...a6 (9...Be6 10.Bb2-/+) 10.Nc3 (10.Bb2 ab5 11.ab5 Ra1 12.Ba1 Be6-/+) 10...dc4 (10...ab5!? 11.Nb5 Bb5 12.cb5 Nbd7-/+) 11.Bc4-/+ ab5 12.Bb5 Bb5 13.Nb5 Nc6 14.Ba3 Na7 15.Na7 Ra7 16.g4 Ne4 17.Qc2=+ Ng5 18.h4 Ne6 19.g5 f5 20.Bb2 Qb6 21.Bc3 Qc6 22.Rg1 c4 23.Nf1 Qe4?? 24.Qe4= fe4 25.Ng3 g6 26.Ne4+/– Bb8 27.Nf6 Kg7 28.Nd7+– Bd6 29.Nf8 Kf8 30.Rg4 Nc5 31.Rc4 Nd3 32.Ke2 Nc5 33.Bb4 b6 34.Bc5 Bc5 35.a5 Be7 36.Rc8 Kf7 37.a6 b5 38.Rb8 b4 39.Rb7 Rb7 40.ab7 Bd6 41.Ra7 Ke6 42.Ra6 Kd7 43.Kd3 Bc7 44.Kc4 Bd6 45.Rd6! Kd6 46.b8Q (46…Ke6 47.Qg8 Kd6 48.Qd5 Kc7 49.Qe5 Kd7 50.Qg7 Kc6 51.Qh7+–) 1–0. riverborne – espartaco, Live Game Caissa's Web, 2005.

3.c4 Bb4 4.a3 Bc5 5.e4?? (better is 5.e3-+) 5...Ne4 6.Nf3 (6.d4 Nf2! (< 6...Bd4 7.Ra2-+; 6...ed4?! 7.Bd3 Qe7 8.Ne2-+) 7.Qh5 Nh1 8.dc5 Qf6-+) 6...Nf2 7.Qa4 Nh1 8.Ne5 Qh4 9.g3 Qg3 10.Kd1 Qe5 11.Nc3 0-0 12.Bb2 d6 13.Nd5 Qb2 14.Rc1 Nf2 15.Ke2 Qe5 16.Ne3 Bd7 17.Qc2 Re8 18.Kf2 Be3 19.de3 Qe3 20.Kg2 Qh3 21.Kf2 Qh2 22.Kf3 Bc6 23.Kg4 h5 24.Kg5 Re5 25.Qf5 f6 26.Kg6 Be8 0–1. blightfritz – knightmare (1890), net–chess.com, 2001.

3.e3 Bb4 4.c3 Ba5 5.Qa4 c6 6.Bd3 d5 7.Ba3 Nbd7 8.Ne2 c5 (8...e4 9.Bc2-+) 9.Ng3? (better is 9.Bc5!? Qc7 10.Ba3+=) 9...0-0-+ 10.Nf5 Re8 (10...e4 11.Be2-+) 11.0-0 (11.Nd6 Re6 12.Nc8 e4-+) 11...c4 (11...e4 12.Be2-+) 12.Be2 Bc7 13.d3? (better is 13.Qb4-+) 13...Nb6 14.Qb4 (14.Ne7 Re7 15.Be7 Qe7-+ (15...Na4?! 16.Bd8 Bd8 17.dc4-+)) 14...Bf5 15.dc4 a5 16.Qb2 dc4 17.Nd2 (17.Rd1 Nfd5-+) 17...Bd6 (better is 17...Na4 18.Qc1 Bd3 19.Bd1-+) 18.Bd6 Qd6 19.Rfd1 (19.Nc4 Nc4 20.Bc4 Qc5-+) 19...Qc6 Black prepares the advance e4 20.Bf3 e4 21.Be2 Na4 22.Qa3 b5 23.g4 (23.Rac1 Nd5-+) 23...Be6 24.Nf1 (24.Rab1 Rad8-+) 24...Rab8 (24...Nd5 25.Ng3 Ndc3 26.Rd6-+) 25.Ng3 (25.Rd6 Qc7 26.Rad1 Nc5-+) 25...b4 26.cb4 ab4 27.Qc1 c3 (27...Nc3 28.Re1-+) 28.Nf5 (28.Rd4 Red8-+) 28...Bc4 (28...Bf5 29.gf5 Qc5 30.Rd4-+) 29.Bf1 (29.Bc4 Qc4 30.Nd6 Qe2 31.Ne8 Ne8-+) 29...Bf1 30.Kf1 Nb2 31.Rd4 Nd3 32.Qc2 g6 (better is 32...Qa6 33.Rd6 Qa5-+) 33.f3 (33.Rd6 Qc7 34.Rf6 gf5 35.Kg2 fg4 36.hg4-+) 33...gf5 34.gf5 Rbd8 (34...Nd5 35.Qg2 Kh8 36.Qe2-+) 35.Rd8 Rd8 36.Rd1 Qb5 37.Kg2 (37.Kg1 Qe5 38.f4 Qc5-+) 37...ef3 38.Kf3 Qd5 (38...Qf5 39.Kg3 Nh5 40.Kh2 Qe5 41.Kh1 Nf2 42.Qf2 Rd1 43.Kg2 Qe4 44.Qf3 Rd2 45.Kg1 Qf3 46.e4 Qd1) 39.Kg3 Qf5 40.Kh2 Qe5 41.Kg2 Qe4 (better is 41...Kh8 42.Rg1-+) 42.Kh2 Qe3 43.h4 Ng4 44.Kg2 (44.Kh1 Ndf2 45.Kg1 Qg3 46.Kf1 Nh2 47.Ke2 Re8 48.Qe4 Re4) 44...Nf4 45.Kh1 (45.Kf1 Rd1 46.Qd1 Nh2) 45...Qf3 46.Kg1 Rd1 (46...Nh3) 47.Qd1 Qd1 0–1. valerypavlovich (2210) – vaingrecsky (2270), net–chess.com, 2016.

3.a3 d5 4.d4 a5 5.b5 a4 6.e3 c6 7.Nf3 Bd7 8.bc6 Nc6 9.Nc3 Be7 10.Bd3 h6 11.0-0 0-0 12.g3 (12.Rb1 Na5=) 12...Qb8 (12...Rc8 13.Na4 Nd4 14.ed4 Ba4 15.Qe2=+) 13.e4= de4 14.Ne4 Ne4 15.Be4 Rd8 16.Re1 Na5 17.Rb1 (17.Ne5 Bd6=) 17...Bc6 18.Ne5 (18.Qd3 Be4 19.Re4 Qc7=) 18...Be4=+ 19.Re4 Bd6 (19...Qc7 20.Qh5 Bd6 21.Bh6=) 20.Qh5= Be5 21.de5 Rd5?? (better 21...Nc6=) 22.Bh6!+- (worse 22.Ra4 Re5 (worse 22...Qe5 23.Qe5 Re5 24.Bd2+-) 23.Qd1 Nc6 24.Ra8 Qa8=+) 22...g6 (22...gh6 23.Rg4 Double attack) 23.Qf3 Qd8 24.h5 (worse 24.Ra4 Rb8 25.c4 Rd3+-) 24...Nc6?? (24...Qe7 25.Ra4 Rc8+-) 25.Rb7 Ne7 (25...f6 26.ef6 Rf5 27.f7 Kh8 28.Qc3 e5 29.f8Q Rf8 30.Bg7 Kh7 31.Bf8 Kg8 32.Qc4 Kh8 33.Rh7 Kh7 34.Qf7 Kh8 35.Qg7) 26.Qf6 (26.Qf6 Rd1 27.Kg2 Rg1 28.Kg1 Qd1 29.Kg2 Qh1 30.Kh1 Nf5 31.Qf7 Kh8 32.Qh7) 1-0. Pereira – Marekt, internet, 2020.

3.c3 d5 4.d4 Bd6 5.Nd2 e5 6.a3 e4 7.e3 Nc6 8.Qb3 Be6 9.Be2 0-0 10.Nh3 Bh3 (10...a5!?-/+) 11.Rh3=+ Qd7 12.h5 Ne7 (12...h6 13.c4 dc4 14.Nc4=+) 13.h6= g6 14.c4 c6 15.c5 Bc7 16.b5 Qd8 17.g4 (17.Kf1 cb5 18.Qb5 b6=) 17...a6 (17...Qd7 18.bc6 bc6 19.Qd1=+) 18.g5 Nd7 19.b6 Bb8 20.f4 Nf5 (20...ef3 21.Bd3=+ (worse 21.Rf3 Nf5-/+)) 21.Bg4 Ne7 22.Bb2 Re8 23.0-0-0 Nf8 24.Rf1 Ne6 (better 24...Nc8!?+=) 25.Be6+- fe6 26.Ne4 de4?? (better 26...Rf8 27.Nf6 Kh8+/-) 27.Qe6 Kh8 28.Qf6 (28.Qf6 Kg8 29.Qg7; 28.d5 Be5 29.Be5) 1-0. beatmeeasy (1955) - glauberggs (1885), lichess.org, 2021.

3.b5 b6 4.Bb2 Bb7 5.Nf3 e6 6.g3 (6.e3 Be7=) 6...Be7 7.Bg2 0-0 8.0-0 c5 9.c4 d6 10.d3 Nbd7 11.Nc3 Qc7 12.e4 Ne5 13.Nh4 Ng6 (13...Nfg4 14.h3 Bh4 15.hg4=) 14.Ng6+= hg6 15.f4 e5 16.f5 (16.Qf3!?+/-) 16...gf5+= 17.Rf5 Bc8 18.Rf1 Be6 19.h3 g6 (19...Qd7 20.Kh2+=) 20.g4 Kg7 21.Bc1 Nh7 22.Be3 Bg5 23.Qd2 Be3 24.Qe3 Qe7 25.Qg3 Qg5 26.Nd1 Nf6 27.Ne3 (27.Qe3 Qh4=) 27...Rh8 (27...Nh5 28.Qf3 Nf4 29.Ra2=+) 28.Qf3 Rh4 29.Rf2 Rah8 30.Raf1 Nd7 31.Qg3 f6 32.Rf3 R8h6 33.Qe1 Rh8 34.R1f2 R8h6 35.Qf1 (35.Rg3 Rh8=) 35...Rh8 36.a4 Rf8 37.Rg3 Rfh8 38.Rff3 Rf8 (better 38...Kf7!?=) 39.Nf5!+/- Kf7 (39...gf5 40.gf5 Combination) 40.Nd6 (40.Nh4!? Qh4 41.g5+/-) 40...Ke7 41.Nf5 gf5 42.ef5?? (better 42.gf5 Qh6 43.fe6 Ke6 44.Qe2+=) 42...Bf7-+ 43.Qe2 Rfh8 44.Re3 (44.Qe3 Qg7-/+) 44...Kd8 (44...Qf4 45.Qf2 Qd4 46.Re1-+) 45.Bc6 (45.Qf3 Qf4-/+) 45...Be8 (45...Nb8 46.Bg2 Qf4 47.Qf3-+) 46.Bd7 (46.Kf1 Qf4 47.Qf3 Kc7-+) 46...Bd7 (46...Kd7 47.Qg2 Kc7 48.Qa8 Rh3 49.Rh3 Rh3 50.Rh3 Qg4 51.Qg2 Qf5 52.Rg3+-) 47.Qf3 Ke7?? (better 47...Kc7!?-+) 48.Qd5 (48.Qb7 Qf4 49.Qb6 Qd4=) 48...Rh3 (better 48...Qf4-/+) 49.Rh3+= Rh3 50.Rh3 Qg4 51.Qg2 Qd1? (better 51...Qg2 52.Kg2 Bf5+=) 52.Kh2+- Bf5?? (better 52...Kd6 53.Rh6 Qd3 54.Rf6 Kc7+-) 53.Rh7 (53.Qb7 Bd7 54.Rh7 Kf8 55.Rd7 (55.Qd7?! Qe2 56.Kg3 Qe3 57.Kg4 Qf4 58.Kh3 Qe3 59.Kg2 Qe2 60.Kg1 Qe1 61.Kg2 Qe2 62.Kh1 Qe1 63.Kg2 Qe2=) 55...Qd2 56.Kg3 Qe3 57.Qf3 Qg5 58.Qg4 Qe3 59.Kg2 Qd2 60.Kf1 Qc1 61.Ke2 Qc2 62.Ke3 Qc1 63.Ke4 Qh1 64.Kf5+-) 53...Kf8?? (53...Bh7 54.Qb7 Ke6 55.Qh7 Qd2 (55...Qa4?! 56.Qg8 Ke7 57.Qg7 Ke8 58.Qg6 Kd7 59.Qf7 Kc8 60.Qe6 Kb7 61.Qc6 Ka7 62.Qc7 Ka8 63.Qc8 Ka7 64.Qa6 Kb8 65.Qb6 Kc8 66.Qc6 Kb8 67.Qd6 Kb7 68.Qd5 Kc7 69.Qc5 Kd7 70.Qd5 Ke7 71.Kg3=) 56.Kh3 Qg5-+) 54.Qg7 Ke8 55.Qe7 1-0. black_bishop_88 (2595) - QW4000 (2200), lichess.org, 2020. (=1.a3 Nf6 2.b4)

3.b5 d5 4.d4 c5 5.dc5 e5 6.Bb2 Nbd7 (6...Bc5 7.e3 (worse 7.Be5 Ng4 8.Bd4 Nf2 9.Bf2 Bf2 10.Kf2 Qf6 11.Nf3 Qa1-+) 7...Bg4 8.Nf3=) 7.c4 (7.c6!? bc6 8.bc6=) 7...d4=+ 8.c6 bc6 9.bc6 Nc5 10.Nf3 Qc7 11.e3 de3 12.Be5 (12.fe3 Ng4 13.h3=) 12...ef2-/+ 13.Kf2?? (better 13.Ke2 Qc6 14.Nc3-+) 13...Ng4-+ 14.Kg1 Ne5 15.Nc3 (15.Be2 Ne6 16.Ne5 Qe5-+) 15...Bg4 (better 15...Nb3! 16.Ra2 Qb6 17.Rf2-+) 16.Nb5 Qb6 17.Qd4 Nf3 18.gf3 Be6 (18...Bf3?! 19.Re1 Be4 20.Re4 Ne4 21.Qb6 Bc5 22.Qc5 Nc5 23.Nc7 Ke7 24.Na8 Ra8 25.h4=+) 19.Re1 Rd8 20.Qe3 Be7 21.Bh3 (21.c7 Rc8-+) 21...Qc6 (better 21...Rd3 22.Qe2 Nb3 23.Kg2-+) 22.Be6 Ne6 23.Kg2 (23.Qe4 Qc5 24.Kf1 0-0-+) 23...0-0 (better 23...Qc4 24.a4-+) 24.Rhg1 (24.Qe4 Rd2 25.Kg3 Bd6 26.Nd6 Qd6 27.Qe5 Qa3-+) 24...Bc5 (better 24...Qc4 25.Qc3 Qb5-+) 25.Qe5 (25.Qe4 Rd2 26.Kh1 Qe4 27.Re4 Bg1 28.Kg1 Rfd8-+) 25...Bg1 (25...Rd2 26.Kh3 Qf3 27.Rg3 Nf4 28.Qf4 Qf4 29.Rf1 Qf1 30.Kg4 h5 31.Kg5 Be7 32.Kh5 Rh2 33.Kg4 f5) 26.Rg1 (26.Kg1 Qc4 27.Qe2 Rd3-+) 26...Qc4 (better 26...Rd2 27.Kg3 Qc4 28.Nc3-+) 27.Kh1 (27.a4 Qa4 28.Nc3 Rd2 29.Kg3 Qc2-+) 27...Qf4 (better 27...Rd5 28.Nd6 Qd3 29.Qe4 Rd6 30.Qd3 Rd3 31.Ra1 Rf3 32.Kg2-+) 28.Rg7 Kh8 29.Qc3 (29.Rg5 Qe5 30.Re5-+) 29…Ng7 (29...Ng7 30.Qc2 Qf3 31.Kg1 Rg8 32.Qh7 Kh7 33.h4 Rd1 34.Kh2 Rh1) 0-1. Minister007 (2340) - Ufo84 (2350), Rated blitz game, lichess.org, 2020.

3.b5 e5 (--> 1.b4 e5 2.a3 a5 3.b5 Nf6).

3.b5 g6 4.Bb2= Bg7 5.e3 0-0 6.c4 d6 7.Nf3 e5 8.Nc3 Nbd7 9.d4 Re8 10.Be2 ed4 11.Nd4 (11.Qd4? Ne4 12.Qd3 Ndc5-+) 11...Nb6 12.0-0 Nfd7 13.e4 (better is 13.Rc1!?=) 13...Nc5+= 14.f3 Qg5 15.Bc1 Qe5 16.f4?? (better is 16.Be3+=) 16...Qd4-+ 17.Qd4 Bd4 18.Kh1 Bc3 19.Rb1 Ne4 20.Rb3 (20.Be3 Nd2 21.Bd2 Bd2-+) 20...a4 21.Rb1 Ng3! 22.hg3 Re2 0–1. Michas,John (2000) – Buczinski,Henryk (2145), ZH.2007.0.149, 2007. (=1.a3 Nf6 2.b4 a5)

4.Bb2 e6 5.e3 Be7 6.Bb5 0-0 7.a6 d5 (7...b6!?=) 8.ab7+= Bb7 9.Nf3 Na5 10.Nc3 c5 11.d4 (11.Rb1 d4 12.Ne2 Qb6+=) 11...Nc4 12.Bc4 dc4 13.dc5 Bc5 14.0-0 Qc7 15.Qe2 Rfb8 16.Rfb1 Ng4 17.e4?? Bf2 18.Kf1 Bc5-+ 19.Bc1 Nh2 20.Nh2 Qh2 21.Ke1?? Qh4 22.Kd1 Rd8 23.Bd2 Bc6 24.Kc1 Ba3 25.Kd1 Qh1 26.Qe1 Qg2 27.Rb6 Be8 28.Nb5 Bb5 29.Rb5 c3 (29...c3 30.Rd5 ed5-+; 29...Qf3 30.Qe2 Rd2 31.Kd2 Bb4 32.Rb4 c3 33.Kc1 Ra1 34.Rb1 Qe2 35.Ra1 Qf1) 0–1. thedesertfox (2170) – michelleke (2340), net–chess.com, 2004.

4.Nf3 Na5 5.d4 d5 6.Ne5 Bf5 7.f3 e6 (7...Nd7 8.g4 Ne5 9.gf5=+) 8.g4 Bg6 (8...Ng4 9.Ng4 Bg4 10.fg4 Qh4 11.Kd2 Nc4 12.Kd3 Qg4 13.Nc3 Ra3 14.Ra3 (14.Ba3? Ba3 15.Rb1 Qf4 16.Nd5 ed5-+) 14...Ba3 15.Ba3 Na3 16.e3 Qf5 17.Kd2 Qf2 18.Qe2 Nc4 19.Kd3=) 9.h4 h6 10.Ng6 fg6 11.Qd3 Kf7 12.Bh3 c5 13.g5 hg5 (better 13...Nd7!?=) 14.hg5+/- (14.Bg5?! Qb6=) 14...Nh5 15.Be6 Ke6 16.Qg6 Ke7 17.Rh5 Ra6 18.Qa6 Rh5 (18...ba6 19.Rh8 cd4 20.Bd2+/-) 19.Qg6?? (better 19.Qd3 Rh1 20.Kf2=) 19...Rh1-+ 20.Kf2 Rc1 21.Qf5 Qd6 22.Nc3 (22.f4 cd4 23.g6 d3 24.Qf7 Kd8 25.cd3 Qc5 26.e3 Qc2 27.Nd2 Qd2 (27...Ra1 28.Qf8 Kd7 29.Qg7 Kc6 30.Qa1 Qd2 31.Kf3 Qd3 32.Qf6 Kd7 33.Qf7 Kd6 34.g7 Qd1 35.Kg3 Qg1 36.Kh4 Qe1 37.Kg5 Qg3 38.Kh6 Qh3 39.Qh5 Qe6 40.Kh7+-) 28.Kf3 Qd1 (28...Ra1 29.Qf8 Kd7 30.Qg7 Kc6 31.Qa1 Qd3 32.Qf6 Kd7 33.Qf7 Kc8 34.g7 Qd1 35.Kg3 Qg1 36.Kh4 Qh2 37.Kg5 Qg3 38.Kf6 Qh4 39.Ke5 Nc6 40.Kd6 Qd8 41.Ke6+-) 29.Kf2 Rc2 30.Kg3 Qa1 31.Qd5 Kc8 32.Qf5 Kb8 33.Qe5 Qe5 34.fe5 Ba3-+) 22...Qh2 (better 22...Ra1 23.Nd5 Kd8 24.Kg2 cd4 25.Nf4-+) 23.Ke3 Qg1 (23...Ra1 24.Nd5 Ke8 25.Qc8 Kf7 26.g6 Kg6 27.Nf4 Kh7 28.Qf5 g6 29.Qf7 Bg7 30.Qg6 Kh8 31.Qe8 Kh7 32.Qg6 Kg8 33.Qe6 Kh7 34.Qg6=) 24.Kf4 Qd4 (24...Ra1 25.Nd5 Kd6 26.Qf8 Kd5 27.Qc5 Ke6 28.Qe5 Kd7 29.Qd5 Ke8 30.Qe5 Kf8 31.Qd6 Kf7 32.Qd5 Ke7 33.Qe5 Kd7 34.Qd5 Kc8 35.Qf5 Kb8 36.Qe5 Kc8 37.Qf5 Kb8 38.Qe5 Kc8 39.Qf5=) 25.Ne4 (25.e4 Qd2 26.Kg4 Qg2 27.Kh5 Qh2 28.Kg6 Qd6 29.Kh7 Ra1 30.Kg8 Qe6 31.Qe6 Ke6 32.ed5 Ke5 33.Kf8 Ra3 34.Nb5 Rf3 35.Kg7 Kd5 36.Kg6-+) 25...Qa1 (25...de4?! 26.Rc1 ef3 27.Kf3-/+) 26.Qd5 (26.c3 de4 27.Qc5 Kd7 28.Qf8 Qc3 29.Qf7 Kd6 30.Qf8 Kc7 31.Qe7 Kb6 32.Qe4 Nc4-+) 26...Qd4 (26...Qa3?! 27.Nc5 Qb4 28.e4=) 27.Qf5 Rc2 (better 27...Nc4 28.Qc5 Qc5 29.Nc5 Rc2 30.e3-+) 28.g6 Re2 29.Qf7 Kd8 30.Qf8 Kd7 31.Qg7 (31.Qf5 Kc6 32.a4-+) 31…Qg7 (31...Qg7 32.Kg3 Qe5 33.Kh3 Rh2 34.Kg4 Rg2 35.Ng3 Rg3 36.Kh4 Qg5) 0-1. PchelkinVK (2460) - Buutenks (2570), Rated bullet game, lichess.org, 2019. (=1.a3 A00: Irregular Openings 1...Nf6 2.b4)

4.ab4 Ra1 5.Ba1 Nc6 6.Bf6 ef6 7.b5 Nd4 8.e3 Nf5 9.Qf3 d5 10.Nc3 c6 11.bc6 bc6 12.Nh3 Bd6 13.g3 0-0 14.Be2 d4 (14...Re8 15.Nf4=+) 15.Ne4=+ de3 (15...c5!?=+) 16.fe3= Bb4 17.c3 Ba5 18.0-0 (18.Nf4 Nh6=) 18...Ne7 (18...Nh6 19.Nf4 f5-/+) 19.Nf4 (19.Qh5 h6 20.Rd1 Re8=) 19...Ng6?? (better 19...f5 20.Ng5 h6 21.Nf7 Rf7-+) 20.Ng6+= hg6 21.Nc5 (21.Rd1 Re8+=) 21...Qd6 (better 21...Qd2!? 22.Ne4 Qb2-/+) 22.d4 (22.Nb3 Bc7+=) 22...Bc3= 23.Ne4 (23.Rc1 Bb4 24.Rc4 Bc5 25.Rc5= (worse 25.dc5 Qd2 26.Rd4 Qc1 27.Kf2 Re8-/+)) 23...Qd5?? (better 23...Qa3=) 24.Nc3+- Qf3 (24...Qe6 25.Ra1+-) 25.Bf3 (25.Rf3?! Re8 26.Kf2 f5+-) 25...Re8 26.Re1 Bd7 27.Ne4 Kh7 (27...Rc8 28.Nc5 Be6 29.Ne6 fe6 30.Rc1+-) 28.Nc5 Bf5 (28...Rd8 29.Nd7 Rd7 30.Kf2+-) 29.Bc6 Re7 30.e4 Bg4 31.d5 Rc7 32.Na6 (32.Ra1 f5+-) 32...Ra7 33.Nb8 (better 33.Nb4 g5+-) 33...Bh3 (33...Ra2+-) 34.d6 Ra2 35.d7 Rg2 36.Kh1 Rd2 37.e5 (better 37.Bd5 Bd7 38.Nd7 g5+-) 37...fe5 38.Na6 (better 38.Ba4 e4+-) 38...f6 (38...Bd7 39.Bd7 Rd7 40.Re5+-) 39.Nc5 1-0. aligre – bjagus, lichess.org, 2017. (=1.a3 Nf6 2.b4)

4.ab4 Ra1 5.Ba1 e5 6.Be5 Bb4 7.Nf3 Nc6 8.Bb2 0-0 9.e3 d5 10.Be2 Qe7 11.0-0 Bf5 12.Nc3 Ra8 13.h3 h6 14.Nb5 Ba5 15.c4 dc4 16.Bc4 Nd7 17.Nfd4 Nd4 18.Nd4 (18.Bd4 c6 19.Nc3 Bb6=) 18...Bh7 19.Nb3 Bb6 (19...Nb6 20.Qg4 Qg5 21.Qg5 hg5 22.Na5 Ra5 23.Be2+=) 20.Qg4 Nf6 21.Qh4 Nd5 ½–½. Thorsteinsson,Erlingur – Ellis,Roy Dominic, Nordic CupT 4rd B13 corr, 2002. (=1.a3 Nf6 2.b4 a5)

4.ab4 Ra2?? 5.Ra2+- Nc6 (5...d5 6.Nf3+-) 6.b5 Nb4 7.Ra1 Nbd5 8.c4 Nb6 9.e3 e5 (9...e6 10.d4+-) 10.Be5 Bb4 (10...d5 11.cd5 Nbd5 12.Nf3+-) 11.Bc3 (11.Qb3 Be7+-) 11...Bd6 (11...Bc3 12.Nc3 Qe7 13.d4+-) 12.Nf3 0-0 13.d4 Ne4 (13...Be7 14.Ba5+-) 14.Bb2 (better 14.c5 Nd5 15.cd6 Nec3 16.Nc3 Nc3+-) 14...Bb4 15.Nfd2 d5 16.Bd3 (better 16.cd5 Nd5 17.Qf3+-) 16...Nd2 17.Nd2 dc4 18.Bb1 c3 19.Bc3! Bc3 20.Ra3 (20.Bh7 Kh8 21.Bd3 Qh4+-) 20...Bb4 (20...Bd2 21.Qd2 Qd6 22.Qc3+-) 21.Rb3 (better 21.Bh7!? Kh8 22.Bd3 Qd5+-) 21...Ba5 (21...Bd6 22.Qh5 g6 23.Qf3+-) 22.0-0 Be6 (22...Re8 23.Qc2 Bd2 24.Qd2+-) 23.Rb2 (23.Ra3 Bd2 24.Qd2 Bd5+-) 23...Nd5 24.Ne4 Qh4 25.Nc5 Bc8 (25...Nc3 26.Qd3 Bc8 27.Bc2+-) 26.Qd3 (26.Qf3 Rd8+-) 26...g6 (26...Rd8 27.Rc1+-) 27.Ba2 Nb4 28.Rb4! Bb4 29.Ne4 (29.Qc4 Ba5+-) 29...Be7 (29...Rd8 30.Qc4 Qe7 31.Nf6 Qf6 32.Qb4+-) 30.Ng3 (30.Bd5 Rd8 31.Qc4 Kg7+-) 30...Qf6 (30...Kg7 31.Qc3 Bd6 32.e4+-) 31.Rc1+- c6 (31...Qb6 32.Ne4+-) 32.bc6 bc6 33.Qc2 Bd7 34.Bc4 Rb8 (34...Ra8 35.Rb1+-) 35.h3 Qd6 36.Ne4 Qc7 (36...Qa3 37.Rb1 Rb1 38.Qb1+-) 37.Bd3 f5 38.Nc5 Bc5 (38...Bc8 39.Na6 Ba6 40.Ba6+-) 39.Qc5 (39.dc5?! Be6+/-) 39...Be8 40.Bc4 Kg7 41.Be6 Rd8 (41...Bf7 42.Bf7 Kf7 43.d5+-) 42.d5 Qd6 (42...f4+-) 43.Qd4 Kf8 (43...Kh6 44.Qh4 Kg7 45.Ra1+-) 44.Qh4 (44.Qf6 Bf7 45.Qf7) 44...Kg7+- 45.Bf5 (better 45.Ra1 Rd7 46.Bd7 Bd7 47.Ra7 cd5 48.Qd8+-) 45...gf5=+ 46.Qg5 Bg6 47.Qf6?? (better 47.dc6 Rc8 48.g4 fg4 49.hg4 Rc6 50.Rc6 Qc6 51.f4=+) 47...Qf6-+ 48.Rc6 Rd6 (48...Qa1 49.Kh2-+) 49.Rc7 Qf7! 50.g3 (50.Rf7 Bf7 Combination) 50...Qc7 51.Kg2 (51.Kh2 Qc2 52.h4 Qf2 53.Kh3 Bh5 54.e4 Bg4) 51...Rd5 (51...f4 52.Kg1 Qc1 53.Kg2 Be4 54.f3 Qd2 55.Kg1 Rb6 56.fe4 Rb1) 52.Kh2 (52.e4 f4 53.gf4 Be4 54.f3 Qc3 55.Kh2 Qf3 56.f5 Qg2) 52...Qc1 (52...Rd2 53.Kg1 Qc1 54.Kg2 Qe1 55.h4 Qf2 56.Kh3 Qf1) 53.h4 (53.h4 Rd2 54.Kg2 Qc6 55.e4 Qe4 56.Kh2 Rf2 57.Kh3 Qg4; 53.Kg2 f4! 54.gf4 Be4 55.f3 Rd2 56.Kg3 Qe1 57.Kg4 Rg2 58.Kh5 Bf3). Zobbie (2505) - Arzybek_Sezdbekov (2435), Rated Bullet game, lichess.org, 2020. (=1.a3 A00: Irregular Openings 1...Nf6 2.b4)

4.Bb2 b6 5.Nf3 d5 6.g3 Bg4 (6...Nbd7 7.Bg2=) 7.Bg2 Nbd7 8.0-0 e6 9.h3 Bh5 10.g4 Bg6 11.d3 h5 (11...Bd6!?=) 12.g5+= Nh7 13.Nbd2 (13.Qd2 Be7 14.Bg7 Rg8=) 13...Be7 (13...Ng5 14.c4=+) 14.h4 (14.c4 Ng5 15.cd5 Nf3 16.Bf3 Ra7+=) 14...f6= 15.e4 fg5 16.ed5 g4?? (better 16...ed5 17.Ng5 Bg5 18.Bd5 A) 18...Bh4? 19.Re1 Kf8 20.Qf3 Bf6 21.Bf6 (21.Ba8?! Ng5 22.Qc6 Bb2 23.Qd6 Kg8 24.Qg6 Ne5 25.Re5 Be5 26.Bd5 Qd5 27.Qe8 Kh7 28.Qh5 Kg8 29.Qe8 Kh7 30.Qh5 Kg8 31.Qe8 Kh7 32.Qh5=) 21...Ndf6 22.Ba8+-; B) 18...Bf6 19.Qe2 Kf8 20.Bf6 Nhf6 (worse 20...Ndf6 21.Ba8 Qa8 22.Qe6=) 21.Ba8 Qa8=+) 17.de6+- gf3 18.ed7 Qd7 19.Bf3 (worse 19.Nf3 0-0 20.Ne5 Qe6 21.Ba8 Ra8+-) 19...0-0-0 20.Nc4 (20.Bg7 Rhg8 21.Nc4 Qb5 22.Bg4 Kb7 23.Qf3 Ka7+/-) 20...Qc7 21.Be5 (21.Bg7 Rhg8 22.Be5 Bd3 23.Bg4 Bf5 24.Bc7 Rd1 25.Rad1 Kc7-+ (25...Rg4?! 26.Bg3 Rc4 27.Rfe1=+)) 21...Qa7 22.Qe2 (22.Bg7 Rhg8 23.Bg4 hg4 24.Qg4 Rd7 25.Qg6 Bf6-/+) 22...Bf6 23.Bf6 Nf6 24.Qe6 Kb8 25.Qb6 (25.Nb6 Rd4+-) 25...Qb6 26.Nb6 Rhf8 (26...Rd4 27.Rfe1 Re8 28.Bc6+-) 27.Nc4 Ng4? (27...a4+-) 28.Bg4 (28.Na5?! Rf3 29.Nc6 Kc7 30.Nd8 Kd8+-) 28...hg4 29.Na5 Rf3 (29...Be8+-) 30.Nc6 Kc7 31.Nd8 Kd8 32.a4 Rh3 33.a5 (33.Rfe1 c4+-) 33...Bf7 34.a6 (34.Rfb1 Bd5 35.Kf1 Rh4+-) 34...Bd5 35.f3! gf3 (35...Bf3 36.Rf3; 35...gf3 36.c4 Combination; 35...Rf3 36.Rf3 Combination) 36.b6 (better 36.c4 Ba8 37.Rfb1 Rh4+-) 36...f2 (36...Rg3 37.Kf2 Rg2 38.Ke3 Re2 39.Kf4+-) 37.Kf2 Rh4 38.b7 Rh2 (38...Bb7 39.ab7 Rb4+-) 39.Ke3 (better 39.Kg3 Rg2 40.Kh3 Kc7+-) 39...Kc7 40.Rfb1 Rh3 41.Kd2 Rh2 42.Kc3 Bb7 (42...Rh8 43.Ra5 Bb7 44.ab7+-) 43.ab7 (43.Rb7 Kd6 44.a7 Rh8 45.Rb8 Rh4 46.a8Q Rb4 47.Rd8 Ke7 48.Ra7 Kf6 49.Qf3 Kg6 50.Rd6 Kg5 51.Rg7 Kh4 52.Rh6) 43...c4 44.Ra8 White prepares b8 (44.b8Q Kd7 45.Qb7 Ke6 46.Rb6 Kf5 47.Qe4 Kg5 48.Ra5) 44...cd3 (44...Rc2 45.Kc2 Kd7 46.b8Q Ke6 47.Ra6 Kf5 48.Qf8 Kg5 49.Rg1 Kh4 50.Qh8) 45.b8Q Kd7 (45...Kc6 46.Qe8 Kc5 47.Qe5 Kc6 48.Qe6 Kc5 49.Ra5) 46.Rb7 (46.Qe8 Kd6 47.Rb6 Kd5 48.Ra5) 46...Ke6 47.Ra6 Kf5 (47...Kd5 48.Qd6 Ke4 49.Qd3 Ke5 50.Qd4 Kf5 51.Rb5) 48.Rb5 (48.Qf8 Ke4 49.cd3 Kd5 50.Qd6) 48...Kg4 49.Ra4 Kh3 (49...Kh3 50.Rh5 Kg2 51.Rh2 Kf3 52.Qf4; 49...Kf3 50.Qf4 Kg2 51.Rg5 Kh3 52.Qe3). black_bishop_88 (2555) - Tornon (2430), lichess.org, 2020. (=1.a3 Nf6 2.b4)

4.c4 e6 5.Nf3 Be7 6.Bb2 0-0 7.e3 b6 8.Nc3 Bb7 9.Qc2 d5 10.cd5 ed5 11.d4 Nbd7 12.Bd3 cd4 13.ed4 Ne4 14.Ne4+= de4 15.Be4 Be4 16.Qe4+= Re8 17.Ne5 Ne5 18.de5 Qd7 19.Qe2 Bc5 20.0-0 Re6 21.Rad1 Qe7 22.Kh1 Re8 23.Qd3 Qh4 24.f4 Rh6 25.h3 Rg6 26.Rf3 h6 27.f5+– Rg4 28.Qd7 Rf8 29.f6 Rf4?? 30.fg7 Kg7 31.g3 Rd8 32.gh4 Rd7 33.e6 (33.e6 Kg6 34.ed7+– (34.Rd7?! Rf3 35.h5 Kh5 36.ef7 Kh4=); 33.Rf4? Rd1 34.Kg2 Rd2 35.Kf3 Rb2-+; 33.Rd7?! Rf3 34.e6 Kg6 35.Rf7 Rh3 36.Kg2 Rh4 37.Rf6 Kg5=) 1–0. Wohl,A (2370) – Corkett,A (2280), 4NCL, Birmingham ENG, 2001.

4.d4 Nbd7 5.Nf3 e5 6.Bg5 h6 7.Bf6 Qf6 8.Nc3 c6 9.bc6 bc6 10.d5 Bb7 (10...c5 11.e3=) 11.e4 Be7 (better is 11...Rc8!? 12.Rb1 Nc5+=) 12.Rb1+– Rb8? (better is 12...Nc5 13.dc6 Bc6+/–) 13.Rb7! Rb7 14.dc6 Rc7 (14...Rb8 15.cd7 Kf8+–) 15.Nd5 Qg6 (15...Rc6 16.Nf6 Bf6 17.Bb5+–) 16.Nc7 Kd8 (16...Kf8 17.cd7 Qe4 18.Be2+–) 17.Nd5 Qe4 18.Be2 Nc5 (18...Nb6 19.Qb1 Ke8 20.Qb6 Qd5 21.Qb8 Bd8+–) 19.Qb1 (19...Nd3 20.cd3 Qb4 21.ab4 a4 22.Qc2 Ke8 23.Qa4 f6 24.Qa7 Bd8 25.Qd7 Kf8 26.Qd8 Kf7 27.Qe7 Kg6 28.Nh4 Kg5 29.Qg7 Kh4 30.Qg4) 1–0. Trkn – guest7392, ICC, 2004.

4.e3 g6 5.c4 Bg7 6.Bb2 0-0 7.d4 (7.Nf3 Nbd7+=) 7...e5 (7...c5 8.Nf3+=) 8.de5 (8.Nf3 Re8+=) 8...Ng4-/+ 9.Nf3 Ne5 (9...Nd7!?-/+) 10.Ne5= de5 (10...Be5 11.Be5 de5 12.Nc3=) 11.Nc3 Be6 (11...Nd7 12.Be2=) 12.Be2 (12.Qd8 Rd8 13.Nd5 Bd5=) 12...Nd7+= 13.0-0 Nc5 14.Qc2 Qh4 (14...c6 15.Rad1 Qb6 16.Na4 Na4 17.Qa4=) 15.g3 Qh3 (15...Qe7 16.Nd5 Qd6 17.Rad1=) 16.Rfd1 Rad8 17.a4 (17.Rd8 Rd8 18.Rd1 Rd1 19.Qd1 Qf5=) 17...Rfe8 (17...e4 18.Ba3 Qf5 19.Rac1+=) 18.Ba3 (18.Rd8 Rd8 19.Rd1 Rd7+/–) 18...Bf8 19.Nd5 Bd5 20.cd5 b6 21.Bc5 (21.e4 Bd6+=) 21...Bc5= 22.Qc4 (22.Bf3 Rd6=) 22...h5 (22...e4 23.Rd2=) 23.Rd2 (23.Qe4 Rd6=) 23...Kg7 (23...e4 24.Bf1 Qf5 25.h3+=) 24.Qe4 f5 25.Qg2 Qg2 26.Kg2 e4 (26...f4 27.e4= (worse is 27.gf4 ef4 28.ef4 Re4-/+)) 27.Bc4 (27.h4 Rd7=) 27...h4+= 28.Rad1 (28.Rc2 Rh8+=) 28...Bd6 (28...Rh8 29.Be2+=) 29.Rh1 (29.Rc2 Rh8+=) 29...Rh8 30.Be2 (30.Rc2 g5+=) 30...Kf6 31.g4 (31.Rhd1!?+=) 31...h3-/+ 32.Kf1 Ke5 33.f4 (33.Rd1 f4 34.Bc4 Rh4-+) 33...ef3! 34.Bf3 fg4 (34...Rh4!?-/+) 35.Bg4+= Bc5 (35...Bb4 36.Rd3+=) 36.Ke2 Rd5 37.Rd5 Kd5 38.Kd3 (38.Rg1 Bd6+=) 38...Bd6 39.e4 (39.Rc1 Ke5+=) 39...Kc5 (39...Ke5!?+=) 40.Rc1= Kb4 41.Rc4 Ka3 (better is 41...Kb3 42.Rc3 Kb2= (42...Ka4?? 43.Kc4 Bh2 44.Bd1)) 42.Be6?? (better is 42.Rc3 Kb2 43.Be6=) 42...Bh2-+ 43.Rc2 (43.Rc3 Ka4 44.Kc4-+) 43...Be5 44.Kc4 (44.Rc1-+) 44...h2 45.Kd5 (45.Rc1 h1R 46.Rh1 Rh1 47.Kd5-+) 45...h1Q 46.Ke5 Qh2! 47.Rh2 Rh2 48.Kf6 (48.Kd5 Ka4 49.Kc4 Rc2 50.Kd3 Rc5-+) 48...Ka4 49.Kg6 (49.e5 Kb5 50.Bd7 Kc5 51.e6-+) 49...Kb5 50.Bd7 Kb4 51.Kf6 a4 52.e5 a3 53.Bg4 a2 (53...a2 54.Kg7 a1Q 55.Bf3 Qe5 56.Kg6 Qg3 57.Bg4 Qg4 58.Kf6 Rh7 59.Ke5 Rh6 60.Kd5 Qe2 61.Kd4 Rd6) 0–1. Wilk,Krzysztof (2125) – Polzin,Rainer (2400), European Blitz, 2017. (=1.a3 Nf6 2.b4 a5)

3.d4 e6 (--> 2.d4 e6 3.a3 b6).

4.e3 e5 5.Be5+= Ne4 (5...Be7+=) 6.Bc4 (6.Qg4 a5+/–) 6...Nc6 (better is 6...Qg5 7.Nf3 Qg2=) 7.Qg4?? (better is 7.Bd5 Nf6 8.Bf6 Qf6 9.Nc3+/–) 7...Ne5-+ 8.Qh5 (8.Bf7 Nf7 9.Nf3-+) 8...g6 9.Qe5+– Be7 10.Qh8 Bf8 11.Qe5 (11.Qe5 Qe7 12.Qe7 Be7 13.Nf3+–) 1–0. Childress,Steven A – Ahmed,Suzanne, IECC, 2000.

4.e3 e6!?=.

4.bc5 bc5 5.e3 d6 (5...Nc6 6.Nf3=) 6.Nf3 (6.Bf6!? ef6 7.Qf3+/–) 6...Bb7 7.Bb5 Bc6 8.Bc6 Nc6 9.0-0 g6 (9...e5 10.c4=) 10.c4 Bg7 11.d3 0-0 12.Nbd2 Rb8 13.Rb1 Qc7 14.Qc2 Rb7 15.d4 cd4 16.ed4 Rfb8 17.Bc3 Nd8 18.Rb7 Rb7 19.Rb1 Ne6 20.Rb7 Qb7 21.Qb3 Qb3 22.Nb3 Ne4 23.Bb2 N4g5 24.Ng5 Ng5 25.Bc1 Ne6 26.Be3 Kf8 27.d5+/– Nc7 28.Ba7 Ke8 29.a4 Kd7 30.Bd4 Bd4 31.Nd4 Na6 32.Nc6 e6 33.a5 ed5 34.cd5 Kc7 35.Kf1 Nb8 36.Nb4 Kb7 37.Ke2 Nd7 38.Kd3 Ne5+/– 39.Kd4 Nd7 40.Kc4+– Nc5 41.Kb5 Ne4 42.a6 Ka7 43.Nc6 Ka8 44.f3 Nd2 45.Nd8 f6 46.Nf7 Nf1 47.Nd6 Nh2 48.Nc8 Nf1 49.d6 Ne3 50.d7 Nc2 51.d8Q Na3 52.Kb4 Nc2 53.Kc3 Na3 54.Qd5 Kb8 55.Qb7 1–0. Fournier,Frederic (1925) – renxo (1825), Active (5/0), 2004.

3.d4 d5 4.Nf3 Nbd7 5.Bg5 e6 6.Ne5 (6.e3 b5=) 6...Qc7 7.Bf4 Bd6 8.e3 (better is 8.Nd7!? Bd7 9.Bd6 Qd6 10.e3+=) 8...Ne5-/+ (8...Be5?! 9.de5 Ne5 10.Be2+=) 9.de5 Be5 10.c3 (better is 10.Be5!? Qe5 11.Ra2-/+) 10...Bf4-+ 11.ef4 Qf4 12.Be2 Qe5 13.0-0 h5 (13...Qf4 14.Re1-+) 14.Bf3 Ng4! 15.g3 (15.Bg4 hg4 Combination) 15...f5 16.Ra2 h4 17.Bg4 hg3?? (better is 17...fg4 18.Qg4 Qf6-+) 18.Bh5+= Kd8 19.f4 (19.fg3 f4 20.Bf3 fg3 21.hg3 Rh3=) 19...Qf6 (better is 19...Qe3!? 20.Kh1 g5 21.hg3 g4+=) 20.hg3+= g6 21.Bf3 Bd7 22.Rff2 g5 23.Rh2 gf4 24.gf4 Kc7 25.Rag2 Rag8 26.Qe2?? Rh2-/+ 27.Kh2 Rh8?? 28.Kg1+/– Qh4 29.Rh2?? Qg3-/+ 30.Qg2?? Qe1-+ 31.Qf1 Qf1 32.Kf1 Rh2 33.Kg1 Rb2 34.Nd2 Rd2 35.Bg2 Kd6 36.Kh2 Rd3 37.c4 dc4 38.Bf1 Rd2 39.Kg3 c3 (39...c3 40.Kf3 c2 41.Bc4 c1Q 42.Be2 Qe1 43.a4 Qe2 44.Kg3 Qg4) 0–1. Aure,Alf Terje – Herigstad,Per Inge, Klubbmesterskapet, 1999. (=1.a3 Nf6 2.b4)

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

4.c4 a5 5.e3 ab4 6.c5 Qc5?? (better is 6...Qc7=) 7.ab4+– Qb4 8.Ra8 Qb6 (8...Qb2 9.Rb8 Kd8 10.Nf3+–) 9.Nf3 (better is 9.Rb8 Kd8 10.Bf6 gf6 11.Ra8+–) 9...Qc7 10.Qa4 d5 (10...d6+–) 11.Be5 Qb6 12.Qa1 Nfd7 13.Bb8 Nb8 (13...Qd8 14.Ba7+–) 14.Rb8 Qc7 (14...Kd8 15.Ng5 Rg8 16.Nf7 Kd7 17.Nc3+–) 15.Qa8 Kd8 16.Rc8! Qc8 17.Qc8 Kc8 18.Ne5 (18.d4!? Kd7+–) 18...f6 19.Nf3 e5 20.Be2 Bd6 21.0-0 Kd7 22.Nc3 h5 23.Rb1 b5 24.Bb5! cb5 25.Rb5 g5 26.Rd5 Ke6 27.e4 h4 28.Nb5 Be7 29.Nc7 Kf7 30.h3 Kg6 31.Rd7 Bc5 32.Ne6 Bb6 33.Neg5! fg5 34.Rd6 Kh5 35.Rb6 g4 36.hg4 Kg4 37.Ne5 (37.Ne5 Kh5 38.Nf7+–) 1–0. Wilk,Krzysztof (1980) – Sliwinski,Pawel (1800), Poland–chT2 U18, 1996. (=1.a3 Nf6 2.b4 c6)

4.d3 Ng4 5.c4?? Qf2-+ 6.Kd2 Ne3 (6...Qe3 7.Ke1 Nf2 8.Qd2 Qd2 9.Nd2 Nh1 10.g3-+) 7.Qc1 (7.Nh3 Nd1 8.Nf2 Nf2 9.Rg1-+) 7...e6 (better is 7...Nf1 8.Kc2 Qg2-+) 8.Nf3 Bc5?? (8...Nf5 9.Nc3-/+) 9.Nc3?? (9.bc5!? Nf5+–) 9...Bb4?? (better is 9...Nf1 10.Qf1 Be3 11.Kd1 Qf1 12.Rf1 d5+=) 10.ab4+– b6?? 11.Ne4 Na6 12.Nf2 Nb4 13.Ke3 d5 14.cd5 cd5 15.Kd2 Bd7 16.Ba3 Nc6 17.e3 a5 18.Nd4 Ne7 19.Be7 Ke7 20.Qc7 Rad8 21.Qb6 Kf6 22.Ra5 g5 23.Ng4 Kg6 24.Ne5 Kh5 25.Nd7 Rd7+– 26.h3 Rdd8 27.g4 Kh4 28.Qb1 f5 29.Qe1 1–0. Fournier,Frederic (1895) – kikodd (1875), Active (1/0), 2003.

4.d3 Ng4 5.e3 d6 6.Be2=.

4.d3 Ng4 5.e3 Ne3? 6.fe3+- Qc7? (better 6...Qe3 7.Qe2 Qe2 8.Be2 a5+-) 7.Nf3 Qd8 (7...a5 8.Be2+-) 8.Be5 (better 8.Be2+-) 8...g6?? (8...f6 9.Bg3+-) 9.Bb8 (better 9.Bh8 f6 10.h4+-) 9...Rb8 10.d4 Bg7 11.c3 0-0 12.e4 d5 13.Be2 (better 13.Nbd2!?+-) 13...de4+/- 14.Nfd2 (14.Ne5 Qc7+/-) 14...e5 15.Ne4 (15.de5 Qg5 16.g3 Qe5+=) 15...ed4 16.cd4 c5 (better 16...Qh4 17.Ng3 Be6=) 17.dc5?? (better 17.Nc5 Bd4 18.Ra2+/-) 17...Qd1 (17...Qh4 18.Nf2 Ba1 19.0-0-+) 18.Kd1-/+ Bd7?? (18...Ba1 19.Nbd2-/+) 19.Nbd2?? (19.Ra2 Ba4 20.Kc1 Bb3+-) 19...Be6?? (better 19...Ba1 20.Bf3 Ba4 21.Kc1 b6-+) 20.Rb1+- Bf5 (20...Rfd8 21.Kc2+-) 21.Bf3 Be4 (21...Rfd8 22.Ke2+-) 22.Be4 (22.Ne4 Be5+-) 22...f6 (22...Rfd8 23.Kc2+-) 23.Ke2 (23.Bd5 Kh8 24.Rb3 Rfd8+-) 23...f5 (23...Rfe8 24.Kf3 Red8+-) 24.Nf3 (better 24.Bd5 Kh8 25.Nc4+-) 24...fe4= 25.Nd4?? (25.Nd2 Rbe8=) 25...Rbe8 (better 25...Bd4 26.Rhf1 Rbd8-+) 26.Nc2 (26.Nb5 a6 27.Nd6 Re7+=) 26...e3 (better 26...Rf7=) 27.Rbd1?? (27.Ne3 Rf4 28.Rb3 Bd4+/-) 27...Re7?? (27...Rf2 28.Kd3 e2 29.Rdg1-+) 28.Rd3?? (28.Rhf1 Rf1 29.Rf1 Bc3+/-) 28...Rfe8?? (better 28...Rf2 29.Kd1 Bh6-+) 29.Rhd1+/- (29.Re3? Re3 30.Ne3 Bh6-+; 29.Ne3? Bh6 30.Rhd1 Re3 31.Kf1 Rf8 32.Kg1 Re2-+) 29...Rf7 30.Rd8?? (30.Ne3 Rfe7 31.Kf2 Rf8 32.Kg1 Re4+/-) 30...Rd8 (better 30...Rf2 31.Kd3 Rd8 32.Ke3 Rd1 (32...Rc2?! 33.Rd8 Bf8 34.Rd7-+) 33.Kf2 Rd2 34.Kf1 Rc2-+) 31.Rd8+- Rf8 32.Rd7?? (32.Rf8 Kf8 33.b5 Ke7 34.Ke3 Kd7+-) 32...Rf7?? (32...Rf2 33.Ke3 Rc2 34.Rb7 a6= (worse 34...Rg2 35.c6 Be5 36.c7 Bc7 37.Rc7+/-)) 33.Rf7+/- Kf7 34.Nd4?? (better 34.Ke3 Be5 35.h3+/-) 34...Kf8 (better 34...Bd4 35.h3 Ke6-+) 35.Nc2 (35.Ne6 Kf7 36.Nd8 Ke7 37.Nb7 Be5+-) 35...b6?? (35...Kf7 36.Ke3 Be5+/-) 36.Ne3 (36.c6 Ke7 37.b5 Be5+-) 36...bc5+/- 37.Nd5 (37.bc5!? Ke7 38.Kd3+-) 37...c4 (better 37...cb4 38.ab4 Be5=) 38.Nf6?? (38.Ne3 c3+/-) 38...c3 (better 38...Bf6 39.Kd2 Ke7-+) 39.Nd7 (39.Nh7!? Ke7 40.Kd3+/-) 39...Ke7+= 40.Kd3?? (better 40.Nc5+=) 40...c2 (better 40...Kd7 41.g4-+) 41.Kc2 Bf6?? (41...Kd7 42.Kd3-+) 42.b5?? (better 42.Nf6 Kf6 43.Kd3+-) 42...Be5?? (better 42...Kd7 43.Kb3 Be5-+) 43.b6 (better 43.Ne5 Kd6 44.Nc6+-) 43...Kd7 (43...ab6 44.Ne5 Ke6+-) 44.ba7 Bb8 (44...Bh2 45.a8Q Bd6 46.a4+-) 45.a8Q (45.ab8Q Ke7+-) 45...Ba7 (45...Bd6+-) 46.Qa7 Kc6 47.Qa6 (47.Qh7 g5+-) 47...Kd7 48.Qa5 Ke6 49.Qb4 (49.Qb4 h5 50.a4+-) 1-0. universe64 (2040) – alexislovee, Daily UltraBullet Arena, lichess.org, 2019.

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

3.Bb2 a6 (--> 1.b4 a6 2.Bb2 Nc6 3.a3 Nf6).

3.Bb2 e6 4.e3 b6 5.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.e3 Bb7 5.Nf3 Nc6).

3.b5 Nd4 4.e3 White fights for the Initiative 4...Nf5 5.g4 Nh4 6.g5 Nd5 (6...Ng8 7.Bb2=) 7.c4+= Nb6 8.c5 Nd5 9.e4 (9.d4 c6+=) 9...Nf4= 10.d4 d5?? (better 10...Nhg2 11.Bg2 Ng2 12.Ke2 d5=+) 11.Bf4+- Ng6 (11...de4 12.Nc3+-) 12.Be5 (12.Be3!? de4 13.Qc2 e6+-) 12...e6 (12...Ne5 13.de5 e6 14.c6+-) 13.ed5 (13.Bg3 de4 14.Nc3 Qg5 15.Bc7 e3+-) 13...Qd5 14.Qf3 (14.Nf3 Ne5 15.de5 Qd1 16.Kd1 Bc5+-) 14...Ne5 15.Qd5 ed5 16.de5 Bc5 17.Bg2 (17.Nf3 a6 18.Nc3 Bg4+-) 17...Be6 (17...c6 18.Nf3+-) 18.Nc3 Rd8 19.Nf3 g6 (19...a6 20.ba6 ba6 21.Na4+-) 20.0-0 (20.Na4 Be7+-) 20...b6 (20...c6 21.Na4 Be7 22.bc6 bc6 23.Rac1+-) 21.a4 (21.Rfd1 d4 22.Ne4 Bf5 23.Nc5 bc5+-) 21...Bg4 (21...h6 22.gh6 Rh6+-) 22.Rad1 0-0 (22...d4 23.Ne4 Bf3 24.Bf3+-) 23.Ne2 (better 23.Nd5 Be6 24.Nc7+-) 23...Bf3 24.Bf3 d4 (24...Rfe8 25.Nd4 (25.Rd5?! Rd5 26.Bd5 Re5+-) 25...Re5 26.h4 Bd4 27.Rd4+-) 25.Be4 (better 25.Bc6 d3 26.Nf4+-) 25...Rfe8 26.Bc6 (better 26.Ng3!? Re5 27.f4+-) 26...Re5+- 27.Ng3 (27.Rd2 Rg5 28.Bg2 Rg4+-) 27...Rg5+= 28.Kh1 (28.Rd3 Re5+=) 28...Ba3 (28...Re5!?=) 29.Rd3+- Bb2 (29...Bc5+-) 30.f4 (better 30.Rb1 Bc3 31.Rbd1+-) 30...Rc5+= 31.Ne4 Rc4 32.Rd2 (32.Rb1 Rc2+=) 32...Ba3 (32...Bc1 33.Rdd1 Ba3 34.Nf6 Kh8 35.Rf3 Ra4 36.Ra1=) 33.Nf6 Kg7 34.Nd5?? (34.Ne8 Kf8 35.Nc7 Ra4+=) 34...Bd6?? (better 34...Rc6 35.Rd4 Rcd6-+) 35.f5 (35.Rfd1 Bc5+=) 35...gf5 (35...Ra4 36.f6 Kh6 37.Rfd1=) 36.Rf5 (36.Rg1 Kh8 37.Rdg2 Be5+-) 36...Rc1 (better 36...Ra4!? 37.Rdf2 Rf8+=) 37.Kg2+- Kg6 38.Rdf2 Rf8 39.h4 Threatening mate: Rg5 39...d3?? (39...Kg7 40.Nf6 Be7 41.Nh7 Bh4 42.R2f4 Kh7 43.Rh4 Kg6 44.Be4+-) 40.Ne3 (40.Rg5 Kh6 41.Rf6) 40...Bc5?? (better 40...Kg7 41.Rd5 Ra1+-) 41.R2f3 (41.Rg5 Kh6 42.Nf5) 41...Be3-/+ 42.Be4 The mate threat is Rg5 42...Rg1 (42...Kg7 43.Bd3 Rg1 44.Kh3-/+) 43.Kh2 d2?? (better 43...Kg7 44.Bd3 Re1-/+) 44.Rg5 (44.Rg5 Kh6 45.Rf6) 1-0. keene2019 (1700) - flash_one, gameknot.com, 2020. (=1.a3 Nf6 2.b4 Nc6)

3.e3 d5 4.c4 (4.Bb2!?=) 4...dc4+= 5.Bc4 Bg4 (5...a5 6.Qb3 Ne5 7.Bb5 c6 8.Be2+=) 6.f3= Ne5 7.Bf7 Kf7 8.fg4 (better is 8.d4!? Qd5 9.Qe2= (9.fg4? Qg2 10.de5 Qh1-+; 9.de5?! Qe5 10.Qd4 Qd4 11.ed4 Bf5=)) 8...Qd5 (8...Nfg4 9.d4 Qd5 10.Nh3 (worse is 10.de5 Qd1 11.Kd1 Nf2 12.Ke2 Nh1-/+) 10...Qg2 11.Rf1 Ke8 12.Nf4 Qh2 13.de5 Qg3 14.Ke2 Qh2 15.Kf3 Ne5 16.Ke4=) 9.Nf3 (9.Kf1 Neg4 10.d4 a5+=) 9...Nd3 10.Ke2? (better is 10.Kf1!? Qc4 11.Ne1 Nc1 12.d3 Nd3 13.Qd3 Qg4 14.Nf3+=) 10...Qc4-+ (10...Ng4 11.Qc2 Qb5 12.Qd3 Qd3 13.Kd3 Nf2 14.Ke2 Nh1 15.Nc3+/–) 11.Nc3. mgriffin (1605) – ashish, net–chess.com, 2001.

3.Nf3 e5 4.g4 (better 4.b5!? Nd4 5.Ne5=) 4...e4-/+ 5.g5 ef3 6.gf6 Qf6 7.Nc3 Ne5 (7...fe2!? 8.Qe2 Kd8-/+) 8.e4=+ d5 (better 8...Nc6!?=+) 9.d4+= (9.ed5? Qe7 10.Ne4 f5-+) 9...Bd6 (9...Ng6 10.Nd5 Qd6 11.Rg1 Qh2 12.Rg3+=) 10.de5 (10.Nd5 Qh4 11.de5 Qe4 12.Ne3 Be5 13.Bb5 c6+/-) 10...Be5 (better 10...Qe5!? 11.Qf3 Bg4+/-) 11.Nd5+- Bc3 (11...Qh4!? 12.Qd3 0-0 13.c3+/-) 12.Bd2 Bd2 13.Qd2?? (better 13.Kd2 Qd4 14.Bd3 Qf2 15.Kc3+-) 13...Qa1-+ 14.Qd1 Qe5 15.Nc7?? (better 15.Qf3 Be6 16.Qf4 Qa1 17.Kd2-+) 15...Qc7 16.Bb5 Bd7 17.Bd3 (17.Bd7 Qd7 18.Qf3 Rc8-+) 17...Be6 (17...Qc3 18.Qd2 Qa1 19.Qd1 Qa3 20.0-0-+) 18.Rg1 (18.Qf3 Qc3 19.Ke2 0-0-+) 18...Qe7 (18...Qc3!? 19.Qd2 Qa1 20.Qd1 Qa3 21.b5-+) 19.Qd2 (19.Bb5 Kf8 20.Qf3 Rc8-+) 19...0-0-0 (19...Qf6 20.Rg3-+) 20.Qf4 (20.Qc3 Kb8 21.Qg7 Qc7-+) 20...Rd7 (20...f5 21.Qf3 fe4 22.Qe4-+) 21.Qg3 (21.Rg7 Rdd8-+) 21...Re8 (better 21...f5 22.e5-+) 22.e5 (22.Qf3 Rg8-+) 22...Bf5 23.Kd1 (23.Qf3 Qe5 24.Kf1-+) 23...Bd3 24.cd3 Qe5 (better 24...Qe6 25.Qf3 Qb3 26.Ke2 Re5 27.Kf1 Rd3 28.Qg4 f5-+) 25.Kc2 (25.Qe5 Re5 26.Rg3 Rd3 27.Kc2-+) 25...Qe2 26.Kc3 (26.Kc1 Qd3 27.Kb2 Re2 28.Ka1 Qa3 29.Kb1 Qb2) 26...Qd3 (26...Rd3 27.Kc4 Qc2 28.Kb5 Rd5) 27.Kb2 Rc7 (27...Re2 28.Ka1 Qa3 29.Kb1 Qb2) 28.Rc1 (28.Qg4 Kb8 29.Qe6 Rc2 30.Kb1 Rf2 31.Ka1 Qa3 32.Kb1 Qb2) 28...Re2 29.Rc2 (29.Rc2 Rec2 30.Ka1 Qd1). barakeomala (2170) - opperwezen (2310), Monthly UltraBullet Arena, lichess.org, 2019. (=1.a3 Nf6 2.b4)

3.e3 g6 4.Bb2 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 TESTJ240 4.a3 d5).

3.Nf3 Bf5 4.e3 Nc6 5.b5 Na5 6.Nc3 e6 7.Be2 Bd6 8.0-0 0-0 9.Nh4 Be4 10.f3 Nd7 11.fe4 Qh4-/+ 12.g3 Qg5 13.Qe1+= Nc4 14.d4 Ne3?? 15.Bd3+– Nc2 16.Bc2 Qg4 17.Bd1 Qh3 18.Bf3 c6 19.Qe2 Nf6 20.e5 Be5 21.de5 Ne4 22.Ne4 a5 23.Nf2 Qf5 24.Bg4 Qg6 25.Bh5 Qf5 26.g4 Qh5 27.gh5 f5 28.ef6! Rf6 29.Bg5 Re8 30.Bf6 gf6 31.Ng4 Kh8 32.Nf6 Re7 33.Ng4 Kg8 34.Qf2 h6 35.Qf8 Kh7 36.Nf6# 1–0. festor – dator 48, internet, 2011.

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

3.Bb2 Nbd7 4.e3 e5 5.Nf3 Bd6 6.d4 e4 7.Nfd2 (---> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.Nf3 Nd7 5.e3 Ngf6 6.d4 e4 7.Nfd2).

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

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

3.Bb2 e6 4.e3 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5).

3.Bb2 e6 4.e3 c5 5.bc5 Bc5 6.d4 Be7 7.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 c5 5.bc5 Bc5 6.d4 Be7 7.e3).

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

3.Bb2 e6 4.Nf3 c5 5.bc5 Bc5 6.e3 Nc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 Nc6).

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

4.Bb2 Bg7 5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.a3).

4.d4 Bg7 5.e3 0-0 6.c4 c6 7.Nbd2 Bg4 8.Be2 Nbd7 9.0-0 dc4 10.Nc4 Re8 11.Bb2 Nb6 12.Nce5 Nfd5?? 13.Ng4+– h5 14.Nge5 e6 15.Qc2 g5 16.Nd2 g4 17.Bd3 f5 18.Nb3 h4 19.Nc5 Qg5 20.Nb7 g3 21.Nd6 Be5 22.de5 (22...Re7 23.Rfe1+–) 1–0. marekt – zioviris, Yahoo, 2005.

3.Bb2 c6 4.Bf6 g6?? (better 4...ef6 5.e3 Nd7=) 5.Bh8+- f6 6.h4 Be6 (6...Bh6 7.h5 g5 8.e4+-) 7.h5 Nd7 (7...g5 8.h6+-) 8.hg6 hg6 9.Nc3 Qc7 10.Nf3 0-0-0 11.Nd4 (11.e4!? d5+-) 11...Bf7 12.e4 e5 13.Nb3 Nb6 (13...d5 14.ed5 cd5 15.Qf3+-) 14.Na5 (14.Bf6 Be7 15.Bg7 Be6+-) 14...Kb8 (14...f5 15.Bf6 Re8 16.Rh7+-) 15.Bf6 Be7 (15...Re8 16.Rh7 Rc8 17.Qf3+-) 16.Be7 Qe7 17.b5 (better 17.Ba6! Qc7 18.Nb7 Rf8+-) 17...cb5 (17...c5 18.Rh7 Qe6 19.Qf3+-) 18.Nb5 Rc8 (18...Be6 19.Rb1+-) 19.Rb1 (better 19.Rh7 Rf8+-) 19...Nc4 (19...Be6 20.d4 Bd7 21.Be2+-) 20.Nc4 Bc4 21.Bc4 Rc4 22.Rh8 Rc8 23.Rc8 Kc8 24.Na7 Kb8 25.Qg4 (25.Nc6! Kc8 26.Ne7 Kb8 27.Qg4 b5 28.Rb5 Ka7 29.Qd7 Ka6 30.Qb7) 25...Kc7 (25...Ka7 26.Qg6 Qc7+-) 26.Qc8 1-0. black_bishop_88 (2535) - Pegasus2020 (1790), CL Invitation. Qualif. G4 Team Battle, lichess.org, 2020. (=1.a3 Nf6 2.b4)

3.Bb2 Nfd7 4.e3 c5 5.c4 (5.bc5 Nc5 6.Nc3 d5+=) 5...cb4 (5...e5 6.d4=) 6.Nf3 (6.ab4!? e5 7.Nf3+=) 6...ba3=+ 7.Ba3 g6 (7...e5 8.Nc3=+) 8.Nc3 Bg7 9.d4 0-0 10.Bd3 Nc6 11.0-0 e5 (11...Nc5 12.Bc2=+) 12.de5 (better 12.d5 Ne7 13.Bd6+/-) 12...Nde5-/+ 13.Ne5 Ne5 14.Qc2 (14.Rc1 Bg4 15.Be2 Nc4 16.Bg4 Na3+=) 14...Nd3 (14...Be6 15.Be4-/+) 15.Qd3 Exerts pressure on the isolated pawn 15...Bf5 (15...Be6 16.Rac1=+) 16.e4=+ Be6 17.Nd5 (17.Rad1!? Qh4 18.Nb5=+) 17...Bd5 18.cd5 (18.Qd5 Ba1 19.Ra1-/+) 18...a5 (better 18...Ba1!? 19.Ra1 Re8-+) 19.Rab1=+ b6 20.Rb6?? (better 20.Qg3 Re8 21.Qd6 Qd6 22.Bd6-/+) 20...f5 (better 20...Qb6 21.Rb1 Qd8-+) 21.Rd6+/- fe4 22.Rd8?? (better 22.Qe4 Qg5 23.Re6+/-) 22...ed3= 23.Rf8 (better 23.Ra8 Ra8 24.Rd1=+) 23...Rf8?? (better 23...Bf8 24.Bf8 Kf8-/+ (worse 24...Rf8 25.Rd1=+)) 24.Bf8+- Bf8 25.Rd1 Bb4 (25...Bd6 26.Rd3 a4 27.Re3+-) 26.Rd3 Kg7 (26...Kf7 27.g4+-) 27.Rb3 (better 27.d6+-) 27...Kh6 (27...Kf6 28.Re3+-) 28.Kf1 Kg5 29.Ke2 Kf5 30.Kd3 Ke5 31.Kc4 g5 (31...Bd6 32.Re3 Kf5 33.Kb5+-) 32.h3 (32.Rh3!? Kf6+-) 32...h5 33.f3 (33.Re3 Kd6+-) 33...g4 (33...h4+-) 34.hg4 (34.Rb4 ab4 35.hg4 hg4 36.f4 Kd6 37.Kb4 Kd5+-) 34...hg4 35.fg4 (35.Rb4 ab4 36.f4 Kd6 37.Kb4 Kd5+-) 35...Kf4 (35...Bd2+-) 36.Rb4 ab4 37.Kb4 Ke5 38.Kc4 Kd6 (38...Kf4 39.d6 Kg4 40.d7+-) 39.Kd4 Ke7 40.Ke5 Kd7 41.g5 Ke7 42.d6 Kf7 1-0. alddhsfd (1845) - rchess2019 (1860), lichess.org, 2019.

3.Bb2 e5 4.e3+=.

3.c4 a5 4.b5 e5 5.Bb2 Be7 6.d3 Bg4 7.Nf3 Nbd7 8.Nbd2 a4 9.Qc2 Nc5 10.g3 0-0 11.Bg2 Qc8 12.h3 Be6 13.Rd1 Re8 14.g4 c6 15.0-0 cb5 16.cb5 Nb3 17.Qc8 Rac8 18.Nb3 Bb3 19.Rc1 h5 20.Nd2 Bd5 21.Ne4 Ne4 22.Be4 Be4 23.de4 hg4 24.hg4 Bg5 25.e3 Rc5 26.Rc5 dc5 27.Rd1 f6 28.Rd7 b6 29.Kf1 Rb8 30.Ra7 Rd8 31.Ke2 Rb8 32.Ra4 Rb7 33.Ra6 Kf7 34.Ra8 Bh6 35.Rc8 Ke7 36.Bc1 Kf7 37.Rc6 (37...Rb8 38.f4+/–) 1–0. Coope,Derek (1945) – Pegoraro,Erivaldo (1890), CiF, 2006.

3.d4= Nbd7 4.Nc3=.

3.d4= Bf5 4.e3 g6 (4...Nbd7 5.Bd3 Bd3 6.cd3=) 5.Nf3 Bg7 (5...Nbd7 6.Nh4 Be6 7.e4=) 6.Bd3 Bd3 7.Qd3 0-0 8.0-0 h6 (8...a5 9.b5=) 9.e4+= Nbd7 10.c4 c6 (10...c5 11.Bb2+=) 11.Nc3 Re8 12.Be3 d5 (better is 12...e6!?+=) 13.cd5+- (13.ed5?! cd5 14.c5 Qc7+=) 13...cd5 14.e5 (14.ed5?! Nb6=; 14.Nd5?! Nd5 15.ed5 Nf6=) 14...Ng4 (14...Nh7 15.Qd2+/-) 15.Bf4 (15.Nd5?! e6 16.Nf4 g5+=) 15...h5 16.h3 (16.Nd5?! e6 17.h3 ed5 18.hg4 hg4+/-) 16...Nh6 17.Bh6 Bh6 18.e6! Nf6 (18...fe6 19.Qg6) 19.ef7 Kf7 20.Ne5 Kg8 21.Qg6 Bg7 22.Ne2 Ne4?? (22...Rf8 23.Ng3 e6 24.Nh5 Nh5 25.Qe6 Kh8 26.Ng6 Kh7 27.Nf8 Qf8 28.Qd5+-) 23.Nf4 (23.Qe6 Kh7 24.Nf4 Qb6 25.Qf5 Kg8 26.Qf7 Kh7+-) 23...Rc8 (23...e6 24.Qf7 Kh7 25.Qh5 Kg8 26.Ne6 Qe7 27.Ng7 Qg7+-) 24.Nh5 (24...Nf2 25.Qg7) 1-0. marekt (1900) - T_Time (1680), ICC, 2003.

3.d4= g6 4.Nd2 Bg7 5.e4 0-0 6.Ngf3 c6 7.Bd3 Nbd7 8.0-0+= a5 9.b5 c5 10.c3 b6 11.Re1 Bb7 12.Qe2 Rc8 13.Qe3 cd4 14.cd4 e5 15.Bb2 ed4 16.Bd4 Qe7 17.Rac1 Nc5 18.Bc2 Rfe8 19.Nc4 Qc7 20.Bc5 dc5=+ 21.Nfd2 Qd8 22.Qh3+= Qd4 23.Rcd1 Rcd8 24.Nb6 Qb2 25.Qb3 Qe5? 26.Nbc4+– Qh5 27.Na5 Ba8 28.Qf3 Ng4 29.h3 Ne5 30.Qh5 gh5 31.b6 Rb8 32.Ndc4 Nc6 33.Nc6 Bc6 34.e5 Bb5 35.Nd6 Red8 36.Nb5 Rb6 37.Rd8 Bf8 38.Re3 Kg7 39.Nd6 Kh6 40.Nf5 Kg5 41.h4 Kg6 42.Rg3# 1–0. b4_player (2185) – brumbrum (2110), GameColony.com, 2003.

3.Nf3 e5 4.Nc3 a6 (4...e4 5.Nd4=+) 5.e4 Be7 6.Be2 Nc6 7.d4 ed4 8.Nd4 0-0 9.0-0 Nd4 10.Qd4 c6 11.Bf4 Be6 12.h3 White claimed a win on time 1-0. leif41no (1985) - arvek (1725), ChessWorld.net, 2020.

4.Nc3 d5 5.e3=+.

4.Nc3 e5 5.e3 c6 6.Be2 d5 7.g4 Bd6 8.g5 Ng8 9.d3 (9.h4 h6 10.gh6 Nh6-/+) 9...Ne7 (9...Qg5!? 10.Nf3 Qf6-/+) 10.h4 a5 11.Nf3 (11.b5!?=+) 11...ab4-/+ 12.ab4 Ra1 13.Qa1 Bb4 14.0-0 (14.h5 h6 15.Rg1 hg5 16.Rg5 b5-+) 14...Qa5 (14...Bd6 15.Nd1 h6 16.gh6 Rh6 17.e4-+) 15.Na4 (15.Qa5!? Ba5 16.Ra1-/+) 15...Bd6 (15...b5 16.Nc3-+) 16.Bc3 (16.c4 dc4 17.dc4 e4-+) 16...Qc7 17.e4 f6 (17...h6 18.Bd2-+) 18.ed5 Nd5 (18...cd5 19.Qb2-+) 19.Bd2 b5 20.Nc3 Nc3 21.Qc3 Nb6 22.gf6 gf6 23.Bh6? (23.Ra1 Qd7 24.Qa5 Nd5-+) 23...Rg8 (better 23...Bh3!? 24.Kh1 Nd5 25.Qa1 Bf1 26.Bf1-+) 24.Kh1 Nd5 25.Qd2 Bh3 (25...Qd7 26.Ng1-+) 26.Rg1 Qf7 27.Rg8? (better 27.c4 Nc7 28.Be3-+) 27...Qg8 28.Ne1 Bg4 (better 28...Bb4 29.c3 Bc3-+) 29.Bg4 Qg4 30.f3?? (30.Ng2 Ne7-+) 30...Qh3 (better 30...Qh4 31.Kg1 Bc5 32.Kg2 Bb4-+) 31.Qh2 Qf1 32.Qg1 Qg1 33.Kg1 Bf8 34.Kf2?? (better 34.Bd2-+) 34...Bh6 35.c4 (35.Ke2 Ne3-+) 35...bc4 (35...Ne3 36.cb5 cb5 37.d4 ed4 38.Nd3-+) 36.dc4 Nf4 (36...Ne3 37.h5-+) 37.Kg3 f5 38.h5 (38.Kh2 Kd7-+) 38...Nh5 39.Kh4 (39.Kf2 Nf4-+) 39…Nf6 0-1. carlymayne (2280) - opperwezen (2590), lichess.org, 2021. (=1.a3 Nf6 2.b4)

4.Nc3 e5 5.e3 g6 6.g4 (6.Nf3 Bg7=) 6...Bg7 7.g5 Nh5 8.h4 0-0 (8...h6!?=) 9.Be2+= f5 10.Bh5 gh5 11.Qh5 Qe8? Black intends e4 (better 11...b6+/-) 12.Qe8+- Re8 13.Nd5 e4?? (13...Rb8 14.Nc7 Rd8+-) 14.Bg7 Kg7 (14...c5 15.Nc7 Re7 16.Na8 Kg7 17.Nc7+-) 15.Nc7 (15.Nc7 Rg8 16.Na8+-) 1-0. black_bishop_88 (2455) - Chebur_1 (2350), lichess.org, 2020. (=1.a3 Nf6 2.b4)

4.Nc3 e5 5.e4 Be7=.

4.e3 e5 5.Nf3 Be7 6.d4 (6.Be2 0-0=) 6...e4 7.Nfd2 0-0 8.c4 Re8 (8...c6!?=) 9.Nc3+= Bf8 (9...a5 10.Nde4 Ne4 11.Ne4 ab4 12.ab4 Ra1 13.Ba1+=) 10.Qc2 (10.g4 h6 11.h4 Nh7+/-) 10...Qe7+= 11.Be2 c6 (11...Nb8 12.0-0+=) 12.0-0 (12.g4 h6 13.h4 g5+/-) 12...h5 13.Rfd1 h4 14.Bf1 (14.h3 d5+/-) 14...g5 (14...h3 15.gh3 d5 16.Rac1+=) 15.b5 Bh6 16.bc6 bc6 17.d5 c5 18.Nb5 Nf8?? (18...Rf8 19.g3+=) 19.Bc3?? (19.Bf6 Qf6 20.Nc7 Bf5+-) 19...a6?? (19...Bg7 20.Rab1+=) 20.Nc7?? (better 20.Bf6 Qf6 21.Nc7+- (21.Ne4?! Re4 22.Qe4 Bf5=)) 20...Qc7+= 21.Bf6 Ng6? (21...Bf5 22.Rdb1+=) 22.Rab1 (better 22.Ne4!? Bf5 23.Bd3+-) 22...Bf5+/- 23.Ba1 (23.Be2 g4+/-) 23...g4+= 24.Qc3 (24.Rb3 g3+=) 24...Ne5 25.Qb3 (25.Be2 h3+=) 25...Rab8 (25...g3 26.Be5 Re5 27.Be2=) 26.Qc3 (26.Qa4 Ra8+=) 26...Bg7 (26...g3 27.Be2=) 27.Qc2 g3 28.fg3 hg3 29.h3 (29.Ne4 Rb1 30.Qb1 gh2 31.Kh1 Qe7-+) 29...Nd3?? (29...Qa5 30.a4=) 30.Be2 (better 30.Rb8 Rb8 31.Bg7 Kg7 32.Bd3 ed3 33.Qc3 Kh7 34.e4+-) 30...Ba1= 31.Ra1 Qe7 32.Rab1 Qg5 33.Nf1 Nf2 34.Rdc1 (34.Rb8 Rb8 35.Ra1-/+) 34...Bh3!-/+ 35.gh3 (better 35.Rb8 Rb8 36.Rb1=+) 35...Nh3?? (better 35...g2 36.Bg4 gf1Q (36...gf1B 37.Kf1 Nd3 38.Rd1-+) 37.Kf1 Nd3-+) 36.Kg2+- Nf2 37.Ng3 (better 37.Rb8 Rb8 38.Rb1+-) 37...Ng4? (better 37...Qe3 38.Rf1 Rb1 39.Qb1 Nd3 40.Bd3 ed3+-) 38.Bg4 Qg4 39.Rb8 (39.Rf1 Rb1 40.Qb1 Qg6+-) 39...Qf3 (39...Rb8 40.Rf1+-) 40.Kh2 Rb8 41.Rg1 (41.Ne4?! Kf8 42.Re1 Ke7+-) 41...Kf8 (41...Re8+-) 42.Qg2 (better 42.Qc3 Re8 43.Rf1+-) 42...Qe3 43.Nf5 (43.Ne4?! Qf4 44.Ng3 Qh6 45.Qh3 Rb2 46.Rg2 Rg2 47.Kg2 Qd2 48.Kg1 Qe3 49.Kh2 Qd2 50.Qg2 Qh6 51.Kg1 Qf4+/-; 43.Qe4?! Rb2 44.Rg2 Qh6 45.Kg1 Qc1 46.Nf1 Rg2 47.Kg2 Qa3+/-) 43...Qf4 44.Ng3 (better 44.Qg3 Rb2 45.Kh1 Qf3 46.Qf3 ef3 47.Ra1+-) 44...Rb3 (better 44...Qe3=) 45.Rf1?? (better 45.Qe4 Qh6 46.Kg2 Ra3 47.Rf1 Ra2 48.Rf2 Rf2 49.Kf2 Qd2 50.Kf3 Qd1 51.Kg2 Qd2 52.Kh3 Qh6 53.Kg4 Qg7 54.Kf4 Qh6 55.Kf3+/-) 45...Rg3 (better 45...Qh4 46.Kg1 Rg3-+) 46.Rf4+- (46.Qg3?! Qf1 47.Qd6 Ke8 48.Qc5 Qe2 49.Kg3 Qf3 50.Kh4 Qf4 51.Kh3 Qf3 52.Kh4 Qf4 53.Kh5 Qf5 54.Kh4 Qf4=) 46...Rg2 47.Kg2 f5 (47...e3 48.Re4+-) 48.Rf5 Ke7 49.Rf4 a5 (49...Kd8 50.Re4 a5 51.Re6+-) 50.Re4 Kd7 51.Re3 Kc7 52.Rb3 (52.Re7 Kd8 53.Ra7 Kc8 54.Ra5 Kb7 55.Rb5 Ka6 56.Rc5 dc5+-) 52...a4 53.Rb5 (53.Rb2 Kc8 54.Rb6 Kc7 55.Rc6 Kd7+-) 53...Kd7 54.Kf3 Kc7 (54...Ke7+-) 55.Kf4 Kd7 56.Kf5 Kc7 (56...Kc8 57.Ke6 Kd8 58.Rb2 Kc7 59.Rb1 Kc8 60.Kd6 Kd8 61.Rb8) 57.Kf6 (57.Ke6 Kc8 58.Kd6 Kd8 59.Rb8) 57...Kd7 58.Kf7 Kd8 (58...Kc7 59.Ke7 Kc8 60.Kd6 Kd8 61.Rb8) 59.Ke6 Kc7 (59...Kc8 60.Kd6 Kd8 61.Rb8) 60.Ke7 Kc8 61.Kd6 (61.Kd6 Kd8 62.Rb8) 1-0. A3orA6 (2465) - Professor_Woland (2600), Rated Bullet game, lichess.org, 2020. (=1.a3 A00: Irregular Openings 1...Nf6 2.b4)

4.g4 e5 5.g5=+ Nd5 6.Bg2 (6.e4 Nf4=+) 6...N5b6 (6...Nf4 7.Bf1-/+) 7.h4 Na4 8.Qc1 (8.Bc1 Be7=+) 8...Nb2 9.Qb2 Be7 10.e3 0-0 11.Ne2 f6 12.Qb3 Kh8 13.g6 hg6 (13...h6 14.Nbc3=+) 14.h5= g5 15.h6 g6 16.Nbc3 Kh7 17.d4 Nb6 18.0-0-0 Qd7 19.de5 fe5 20.Ne4 Qe6 21.Qd3 (21.Qc3!? Qc4 22.Rd3=+) 21...Qa2-/+ 22.f4? (better 22.Kd2-/+) 22...Nc4 (worse 22...ef4 23.ef4 gf4 24.Qc3-/+) 23.Qb3 (23.Qc3 gf4 24.Nf4-+) 23...Qa1 24.Qb1 Qa3 (24...Qa3 25.Qb2 Qb2) 0-1. black_bishop_88 (2545) - Player321 (2565), lichess.org, 2020. (=1.a3 Nf6 2.b4)

4.g4 Ng4 5.Nf3-/+.

4.Nf3 Bg7 5.d4 Nbd7 6.e3 b6 (6...a5 7.Bd3=) 7.c4 Bb7 8.Be2 c5 9.d5 0-0 10.0-0 e6 (better 10...b5!? 11.bc5 Nc5=) 11.de6+/- fe6 12.Qd6 Ne4 (better 12...Qe8!?+/-) 13.Qe6+- Kh8? (13...Rf7 14.Bg7 Kg7+-) 14.Bg7 Kg7 15.Rd1 Rf7 (15...Nef6 16.Ne5 Bc8 17.Bf3+-) 16.Ne5 Re7 17.Rd7 Qd7 18.Qd7 (18.Nd7?! Re6 19.f4 Rd8=) 18...Rd7 19.Nd7 Rd8 20.Ne5 Nd6 (20...Kf6 21.Nd3+-) 21.bc5 Be4 (21...bc5 22.Nd3 Rc8 23.Nd2+-) 22.Nc3 (better 22.cd6 Rd6 23.Nc3 Bf5+-) 22...Bf5 (22...bc5 23.Rd1 Bf5 24.Nb5+-) 23.cd6 1-0. kabalist (2385) - baronfel (1845), Rated Blitz game, lichess.org, 2014. (=1.a3 Nf6 2.b4)

4.Bf6 ef6 5.c3 Bg7 6.d4 0-0 7.Nf3 a5 8.b5 c6 9.e3 c5 10.Be2 b6 11.0-0 Bb7 12.Nfd2 Nd7 13.Bf3 Qc7 14.Bb7 Qb7 15.Nf3 Rfe8 16.Nbd2 Rad8 17.Rc1 f5 18.a4 Nf6 19.h3 Ne4 20.Re1 Re7 21.c4 d5 22.cd5 Rd5 23.Nf1 (23.Qc2 Nd2 24.Qd2 Qd7=) 23...cd4 (23...Red7!?=+) 24.ed4= (worse 24.Nd4 Nf2 25.Kf2 f4-/+) 24...Red7 25.Rc6 (25.Rc4 Re7=) 25...h6 (25...Bd4 26.Nd4 Rd4 27.Qc2=+) 26.Qc2 (better 26.Ne3!? R5d6 27.Qc1+=) 26...Bd4=+ 27.Nd4 Rd4 28.Ne3 Rd2 29.Qc4 (better 29.Qc1 R2d6 30.f3=) 29...Nf2 (29...Kh7-/+) 30.Rc8?? (better 30.Rg6! Kh7 31.Rc6 Nh3 32.Kh1 Nf2 33.Kg1 Nh3 34.gh3+/-) 30...Kh7-+ 31.Qc3 R2d4?? (31...R7d4 32.Rc6 Qe7 33.Nc2-+) 32.Nc2?? (better 32.Kf2 f4 33.Nf1+-) 32...Ne4-+ 33.Qb2?? (better 33.Re4 Qe4 34.Nd4 Rd4 35.Qc7-+) 33...Qd5 (better 33...Qc8 34.Nd4 Qc5-+) 34.Nd4= Qd4 35.Kh1?? (better 35.Qd4 Rd4 36.Rc6 Ra4 37.Rb6=) 35...Qb2-+ 36.Re8 Ng3 37.Kh2 Ne4 38.Re5?? (38.Kh1 Rd2 39.Rg1-+) 38...Qe5 39.g3 (39.Kg1 Qg3 40.Rf1 Rd2 41.Rf2 Qf2 42.Kh2 Qg2) 39…Qg3 (39...Qg3 40.Kh1 Nf2) 0-1. chess_2020_chess (2200) - almasssss (2200), Rated Bullet game, lichess.org, 2020. (=1.a3 Nf6 2.b4)

4.g4 Bg4!? 5.Bg2 c6-/+.

4.g4 Bg7 5.g5= Nh5 6.Bg7 Ng7 7.h4 (7.d4 h6 8.gh6 Rh6=) 7...0-0 (7...h6 8.gh6 Rh6 9.d4=+) 8.e3 f6 (8...e5 9.Nc3=) 9.Be2 (9.Nc3 a5=) 9...e5 10.Nc3 (10.h5 gh5 11.gf6 Qf6 12.Bc4 Kh8=+) 10...fg5=+ 11.hg5 Qg5 12.Nf3 Qf6 13.Ne4 Qf7?? (better 13...Qf5 14.Nfg5 d5 15.Nh7 Qe4=+) 14.Nfg5+- Qf5 15.Nh7?? (better 15.Bf1 Ne6 16.Bh3 Ng5 17.Bf5 Rf5 18.Ng5 Rg5 19.Qe2+-) 15...Qe4=+ 16.f3 Qf5 17.Nf8 Qf8 18.c3 Nc6 19.Qb3 (19.Rb1 Ne7=+) 19...Be6-/+ 20.Bc4 Qe7 21.0-0-0 Rd8 (21...b5 22.Be6 Qe6 23.Qb1-/+) 22.Rdg1=+ d5 23.Bd3 d4 (23...e4 24.Bb5=+) 24.Qc2= de3 (24...g5 25.Bh7 Kf8 26.Be4=) 25.de3 Qf6 (25...g5 26.Bh7 Kf8 27.Be4=) 26.Bg6+= Qf3?? (better 26...Kf8+=) 27.Bh7+- Kf7 28.Rf1 Bf5 (28...Qf1 29.Rf1 Ke7+-) 29.Rf3 1-0. black_bishop_88 (2505) - Karalic_E (2340), lichess.org, 2020. (=1.a3 Nf6 2.b4)

(--> 1.b4 e5 2.a3 Nf6).

3.Bb2 (--> 1.b4 e5 2.Bb2 Nf6 3.a3).

4.Nc3 d5 5.e3 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.e3 Nf6 5.Nc3).

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

4.e3 Nbd7 5.c4 Be7 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 Nbd7).

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

4.Bb2 Bd6 (--> 1.b4 e5 2.a3 d5 3.Bb2 Bd6 4.e3 Nf6).

3.c4 c5 (--> 2.c4 e6 3.a3 c5).

3.c4 g6 4.Bb2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.c4).

3.d4 (--> 2.d4 e6 3.a3).

3.d4 d5 4.e3 Bd6 5.Nf3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d4 Bd6 5.e3).

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

3.Bb2 a5 4.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a5 4.c4).

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

3.Bb2 Be7 4.d4 (--> 2.d4 e6 3.a3 Be7 4.Bb2).

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

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

4.e3 Bd6 5.c4 0-0 6.Bb2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Bd6 5.e3 Nbd7 6.c4 0-0).

3.b5 Bg7=+ 4.Bb2 0-0 5.Nf3 Re8 6.Qc1 d6 7.d3 e5 8.e3 Qe7 9.Be2 c5 (9...a6 10.c4=+) 10.Nc3 (10.0-0 a6=) 10...b6 11.e4 Bb7 12.Nd5? (better 12.0-0=) 12...Nd5-+ 13.ed5 Bd5 (13...e4 14.de4 Bd5 15.Bg7 Qe4 16.0-0 Kg7 17.Re1=+) 14.c4 (14.0-0 a6 15.c4 Bb7-/+) 14...Bb7 (better 14...e4!? 15.Ng1 Bb2 16.Qb2 Qg5-+) 15.0-0-/+ f5 Black prepares the advance e4 16.Nd2 Nd7 17.Bf3 e4 18.Re1 (18.de4 fe4 19.Be2 Bd4-/+) 18...Bb2 (18...Qg5 19.h4 Bb2 20.Qb2 (20.hg5?? Bc1 21.Rac1 ef3-+) 20...Qh4 21.de4 fe4 22.g3-+) 19.Qb2-/+ Qe5 (19...Ne5 20.de4 Nd3 21.Qb3 Ne1 22.Re1-/+) 20.Qe5 Ne5 (20...Re5!? 21.de4 Rae8-/+) 21.de4= Nf3 22.gf3 fe4 (22...a6 23.Rab1=) 23.Ne4 Be4 24.Re4 Re4 (24...Red8 25.Rd1=) 25.fe4 Re8 26.f3 Re6 (26...Kf7 27.Rd1 Ke6 28.Rd3=) 27.Rd1 Kf7 28.Kf2 Ke7 29.Ke3 Rf6 30.h4 h6 31.f4 Re6 32.Rd5 Kd7 33.f5 (33.Rd2 Ke7+/-) 33...gf5+= 34.Rf5 Re7 35.Rf6 Rh7 (35...Re6 36.Rf8 Re5 37.Rg8+=) 36.h5 Ke7 37.Rg6 Kd7 38.Kf4 Ke7 (38...Rf7 39.Kg4 Re7 40.Rh6 Re4 41.Kf5 Re5 42.Kf4+/-) 39.e5+- de5 40.Ke5 Kd7 (40...Kf8 41.Rc6 Rd7 42.Kf6+-) 41.Rc6 (better 41.Kf6!? Rh8+-) 41...Re7 42.Kd5 Re3 43.Rh6 Rd3 44.Ke5 Ra3 45.Rh7 Kc8 (45...Ke8 46.Kf6 Rf3 47.Kg6 Rg3 48.Kf5 Rf3 49.Kg4+-) 46.h6 Re3 (better 46...Rh3+-) 47.Kf4 Rh3 48.Kg5 Rc3 (48...Rg3 49.Kh4 Rc3 50.Ra7 Rc4 51.Kg5+-) 49.Rg7 (better 49.Ra7 Rg3 50.Kf4+-) 49...Rc4 (49...Kb8+-) 50.h7 Rd4 51.h8Q Rd8 52.Qh6 (52.Qh3 Kb8 53.Qf3 Rd7 54.Rd7 a6 55.Qf8) 52...Rd5 (52...Rd2 53.Qc6 Kd8 54.Qa8) 53.Kf4 Rd4 54.Ke3 Rd6 (54...Rd3 55.Kd3 c4 56.Kc4 a6 57.Qh8) 55.Qd6 (55.Qd6 a6 56.Qf8) 1-0. universe64 (2325) - SpeedySalts (2555), lichess.org, 2019.

3.c4 Bg7 4.Bb2 (4.d4 a5=) 4...0-0=+ 5.e3 b6 (5...d5 6.d4=) 6.d4 (6.Qf3 d5=) 6...Bb7 7.Bd3?? (7.Nf3 Nc6=) 7...Ne4 (better is 7...Bg2 8.Nf3 Bh1-+) 8.Nc3?? (better is 8.f3 Nf6 9.Ne2+=) 8...e6?? (8...Nc3 9.Bc3 Bg2 10.Bg6 fg6-+) 9.Rc1 (9.Ne4 f5 10.Ng3 Bg2 11.Nf3+/–) 9...d6?? (better is 9...Nc3 10.Rc3 Bg2-+) 1–0. Baer,Werner (1715) – Zimmermann,Joerg (1700), TT–02.34 TSC, 2006.

3.e3 a5 4.b5 e5 5.c4 Bg7 6.Bb2 d6 7.Nf3 0-0 8.Be2 Re8 (8...e4 9.Nd4=) 9.0-0 Nbd7 10.Nc3 e4 11.Nd4 Nb6 12.a4 (12.f3 ef3 13.Nf3 Bg4+=) 12...Nfd7= 13.f3 ef3 14.Nf3 (worse is 14.Rf3 Ne5-/+) 14...Nc5 15.d4 Ne4 16.Ne4 (16.Qc2 Bf5 17.Ne4 Be4=) 16...Re4 17.Qb3 Qe7 18.Bc1 Bf5 19.Kh1 Re6 20.Ra2 Re8 21.Qc3 Qd7 (21...Ra8 22.Ra3=) 22.h3 (22.Qa5 Bh6 23.Qc3 R6e7+=) 22...Bh6 Attacks the backward pawn on e3 23.e4 (23.d5 R6e7=) 23...Bc1 (worse is 23...Re4 24.Bd3 Bg7 25.Be4 (worse is 25.Qa5 Rd4 26.Nd4 Bd3-/+) 25...Re4 26.Raf2=) 24.ef5 Re2 25.Re2 Re2 26.Qc1 (26.Rc1!? Qf5 27.Qa5+=) 26...Qf5-/+ (26...Na4 27.Qd1 Nc3 28.Qd3+/–) 27.c5 Nd5 (27...dc5 28.dc5 Rc2 29.Qh6 Rc5 30.Re1=) 28.cd6 cd6 29.Ng1 Rf2 30.Rf2 Qf2 31.Qc8 Kg7 32.Qb7 Qd4 33.Nf3 (33.Qc6 Ne3 34.Qc1 d5-/+) 33...Qc4 (33...Qa1 34.Kh2 Ne3-/+) 34.Qa7 Qc1 (34...Qa4 35.b6 Nf6 36.b7+=) 35.Kh2+= Qb2 ½–½. Cirulis,Ilmars (1815) – Nichols,Scott (2310), FICGS, 2016.

3.h4 Bg7 4.Bb2=+.

3.h4 h5 4.Bb2 d6 5.Bf6 ef6 6.c4 a5 7.b5 Be6 8.e3 d5 9.cd5 Qd5 10.Nc3 Qd7 (10...Qd8!?=) 11.Qf3+/- c6 12.Qf6 Rg8 13.Nf3 Bg7 14.Qf4 Bc3 15.dc3 cb5 16.Nd4 Bc4 17.Bc4 (17.Nb5 Bb5 18.Rd1 Qe7 19.Bb5 Nc6+-) 17...bc4+/- 18.0-0 Na6 19.Rab1 0-0-0 (19...Nc5 20.Rfd1 Nd3 21.Qe4 Qe7 22.Qd5 Qh4 23.Rd2+-) 20.Nb5+- (20.Nb5 b6 21.Qc4 Kb7 22.Qf4+-) 1-0. black_bishop_88 (2635) - brancoenriva (2465), lichess.org, 2020. (=1.a3 Nf6 2.b4)

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.a3).

3.Bb2 Bg7 4.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3).

3.Bb2 Bg7 4.e3 0-0 5.d4 (---> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 0-0 5.a3).

3.Bb2 Bg7 4.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.a3).

3.Bb2 Bg7 4.g3 0-0 5.Bg2 c6 6.Nf3 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 c6 5.a3 0-0 6.Bg2).

4.c3 0-0 5.Nf3 b6 6.h4 1–0. Celerier,Frederic – Bernardet,Serge, FRA AJEC031 corr, 1999. (=1.a3 Nf6 2.b4 g6 3.d4 Bg7)

4.e3 0-0 5.Nf3 d6 6.Be2 Nc6 7.0-0 e5 8.b5 Ne7 9.Bb2 ed4 10.ed4 Ned5 11.Re1 Re8 12.Bf1 (12.Bc1 Bf5=) 12...Re1 13.Qe1 Bg4 14.Nbd2 Nb6 (14...Qd7 15.h3 Bf5 16.Qc1=) 15.Rc1 Bh6 16.Rb1 Qd7 17.h3 (17.Bd3 Re8 18.Qf1 Na4=) 17...Re8=+ 18.Qd1 Bf3 (18...Bd2!? 19.hg4 Bf4=+) 19.Nf3 Ne4 20.c4 Nc8 (20...Bg7 21.Qc2+=) 21.Qc2 Bg7 22.Bd3 Nf6 23.a4 Nh5 24.Bc1 Ne7 25.Bd2 (25.Be3 d5+/-) 25...Kf8 (25...c5 26.Be3+=) 26.a5+/- Ng8 (26...Nf6 27.a6 ba6 28.ba6+/-) 27.Be3 b6 28.Be4 (28.ab6 ab6 29.Ra1 Ne7+/-) 28...Ne7 29.Ng5 (29.Ra1 Kg8+/-) 29...Kg8 30.Bf3 (30.ab6 ab6 31.Nf3 Nf6+/-) 30...Nf6+= 31.Re1 (31.ab6 ab6 32.Ne4 Ne4 33.Qe4 d5 34.cd5 Nf5+=) 31...h6 (31...d5 32.ab6 cb6 33.cd5 Qb5 34.d6=) 32.Ne4 Ne4 33.Be4 d5 34.Bd3 dc4 35.Bc4 (35.Qc4 Nd5=) 35...Nd5 (35...ba5 36.Bd2=) 36.Qb3 Ne3 37.fe3 (37.Re3!? Rd8 38.Rg3+=) 37...Bd4=+ 38.Kh1 (38.ed4 Qd4 Double attack (38...Re1 Pinning; 38...Re1 Deflection)) 38...Bc5 (38...ba5? 39.Rd1+-) 39.Rf1 Re7 40.Qc2 (40.Qc3 Re3 41.Qb2 Qe7 42.Bf7 Kh7=) 40...Kg7 (40...Kh7 41.e4=+) 41.e4 (41.Qc3 Kh7 42.Qf6 ba5=+ (worse 42...Be3 43.Bf7 Rf7 44.Qf7 Qf7 45.Rf7 Kg8 46.ab6 Bb6 47.Rd7+-)) 41...Qd6 (41...ba5 42.Rd1 Bd6 43.Qc3 f6 44.Qf3-/+) 42.Bd5=+ Qe5 43.g4 (43.a6 f5 44.Rd1 fe4-+) 43...Bd6 (43...Qg3 44.Qb2 Kg8-/+) 44.Qf2 (44.a6 f6=+) 44...f6 (44...ba5 45.Rd1-/+) 45.Qg2 (better 45.a6!?=+) 45...ba5-+ 46.h4 a4 47.g5? (better 47.h5-+) 47…hg5 (worse 47...fg5 48.hg5 Qg5 49.Qg5 hg5 50.Kg2-+) 0-1. Minhntq81 (2330) - Banelevich (2425), Rated Blitz game, lichess.org, 2020.

4.e3 0-0 5.Nf3 d6 6.Be2 Nbd7 7.0-0 e5 8.Bb2 e4 9.Nfd2 d5 10.c4 c6 11.Nc3 b6 12.b5+/– Bb7 13.bc6 Bc6 14.cd5 Nd5 15.Nce4 f5 16.Qc2 Rc8 17.Nd6 Rc7 18.Qb3 N7f6 19.Nb5 Bb5 20.Qb5 Rc2 21.Rfd1 Ne4 22.Ne4 fe4 23.Bc4 Rf5 24.Rac1 a6 25.Bd5 Rd5 26.Qa6 Ra5 27.Qb7 Rc1 28.Rc1 Bf8 29.Rc8 Qd5 30.Qb6 Rb5 31.Qf6 Qf7 32.Qf7 Kf7 33.Rc2 (33...Ra5 34.h3+–) 1–0. b4_player (2240) – Djuric (2005), GameColony.com, 2003.

4.Nf3 0-0 5.c4 d6 6.d4 b6 (6...e5 7.Bb2=) 7.Be2 Bb7 (7...c5 8.0-0=) 8.0-0+= c5 9.Nc3 Nbd7 10.Qc2 (10.Bb2 cd4 11.ed4 Rc8=) 10...e5 (10...Rc8!?=) 11.d5+= Re8 (11...e4 12.Nd2+=) 12.e4+/– Nf8 (12...a6 13.Be3+/–) 13.bc5 bc5 14.Bg5 h6 15.Be3 g5 (15...Qe7 16.Rfb1+/–) 16.Rab1 Rb8 17.Qa4 (17.Rb2 Ng6+/–) 17...a6 18.Rb3 Ng6 19.Rfb1 Qc7 20.h4 (20.Rb6 Nf4+/–) 20...g4 (20...gh4 21.Rb6+=) 21.Nh2+/– h5 22.Nf1 Nf4 (22...Nh4?? 23.Bg5 Nd7 24.Bh4+–) 23.Ng3 Red8 24.Nf5 (24.Bf4 ef4 25.Nf5 Nd7+/–) 24...Bf8 (24...Ne2!? 25.Ne2 Ne4+=) 25.f3 (25.Bf4 ef4 26.f3 gf3 27.Bf3 Ng4+–) 25...Ne2 26.Ne2 a5 (better is 26...gf3 27.gf3 Bg7+/–) 27.Bg5+– Bg7 28.Neg3 Rd7 (28...Ba6 29.fg4 hg4 30.Ng7 Kg7 31.Rf1+–) 29.Ng7 (29.Bf6!? Bf6 30.Nh5 Bd8 31.fg4 Kh7+–) 29...Kg7 30.Nf5 Kg6 31.Bf6 Kf6 32.Rb6 (32.Rb7 Qb7 33.Rb7 Rdb7 34.fg4 hg4 35.Nd6 Rb1 36.Kh2 g3 37.Kg3 Rg8 38.Kf2 Rb2 39.Kf3 Rgg2+–) 32...Kg6 (32...Qd8 33.Qa5 Rc8 34.Qd2+–) 33.Qd1 g3 (33...f6 34.Qd2 Kf7+–) 34.Qd2 (34.Qd2 f6 35.Qh6 Kf7 36.Qg7 Ke8 37.Qg8) 1–0. Cirulis,Ilmars (1675) – Ramos,Francis, FICGS, 2015.

4.Nf3 0-0 5.d4 d5=.

4.Nf3 0-0 5.e3 a5 6.b5 c6 7.c4 cb5 8.cb5 b6 9.Be2 Bb7 10.0-0 d6 11.Nc3 Nbd7 12.Bb2 Rc8 13.Na4 Ne4 14.Rc1 Ndf6 (14...Rc1 15.Qc1 Qb8 16.Qb1=) 15.h3 (15.Rc8 Bc8 16.Qc2 Bb7+=) 15...Rc1= 16.Qc1 Nd5 17.Qc2 Ndf6 18.Rc1 h5? (better 18...Ba8!?+=) 19.Qc7+- Bd5 20.Nb6 Qc7 21.Rc7 Bb3 (21...Rb8 22.Nc8 e6 23.Ne7 Kf8 24.Bd3+- (worse 24.Nd5 Nd5 25.Rc6 Nb6+-)) 22.Re7 (better 22.Nc8!? Nd5 23.Ne7 Ne7 24.Re7 Bd5+-) 22...Rb8 23.Nd7 Nd7 24.Rd7 Ba4 25.Bc4 Bb5 26.Bf7 Kh7 27.Ra7 Bc4 (27...Bd3 28.Bd5 Kh6+-) 28.Bc4 Rb2 29.Bd3 (better 29.Bd5 Rb1 30.Kh2 Nf2 31.Ng5 Kh6 32.Nf7 Kh7 33.Nd6+-) 29...Nf2 30.Ng5 Kh6 31.Nf7 Kh7 32.Ng5 (better 32.Bf1!? Ne4 33.Nd8+/- (33.Ra5?! Rb3+=)) 32...Kh6+/- 33.Nf7 Kh7 34.Ng5 ½-½. Minhntq81 (2400) - CristianS27 (2480), Rated Bullet game, lichess.org, 2021.

4.Nf3 0-0 5.e3 d5 6.c4 Bg4 7.Nc3 c6 8.h3 Bf3 9.Qf3 e6 (9...e5 10.de5 Nfd7 11.Bb2 (< 11.cd5 Ne5 12.Qd1 Nf3 13.gf3 Bc3 14.Bd2 Ba1 15.dc6 Nc6 16.Qa1 Re8-/+) 11...Ne5 12.Qf4 dc4 13.Rd1= (< 13.Bc4 Nd3 14.Bd3 Qd3-/+)) 10.Be2 Nbd7 11.0-0 Nb6 12.c5 Nbd7 13.Rb1 e5 14.Rd1 e4 15.Qg3 Qb8 16.Qb8 Rfb8 17.b5 a6 18.bc6 bc6 19.Rb8 Nb8 20.Bd2 Ra7 21.Rb1 Nfd7 22.f3 f5 23.g4 Kf7 24.gf5 gf5 25.Kf2 Bf6 26.Kg3 h5? 27.Kf4+– Ke6 28.fe4 fe4 29.Bh5 a5 30.Bg4 Ke7 31.Be1 Ra8? 32.Bg3 Nf8? 33.Rb7 Nbd7 34.Kf5 Ne6 35.Bd6 (35...Kf7 36.Rd7 Kg8 37.Kf6 a4 38.Be6 Kh8 39.Be5 Rg8 40.Bf5 Rf8 41.Ke6 Rf6 42.Bf6 Kg8 43.Rd8) 1–0. b4_player (2235) – Djuric (2010), GameColony.com, 2003.

4.Nf3 d5 5.e3 0-0 6.c4 Bf5 7.Nbd2 a5 8.ba5 Ra5 9.Qb3 Qc8 10.cd5 Nd5? (better is 10...Nbd7+=) 11.e4+– Nc6 12.ed5 Nd4 13.Nd4 Bd4 14.Bb2 Bb2 15.Qb2 Rd5 16.Nc4 Rfd8 17.Ne3 R5d6 18.Bc4 (18.Nf5?! Qf5 19.Be2 Rd2+=) 18...Bd3 19.Bd3 Rd3 20.0-0 R8d6 21.a4 b6 22.a5 ba5 23.Ra5 c5 (23...c6 24.Rfa1 Qe6 25.Ra8 Rd8 26.Qb6 Rd1 27.Rd1 Ra8 28.h3+–) 24.Rc1 Rd1 (24...c4+–) 25.Nd1 Rd1 (25...Qd8 26.Qa1 Rc6+–) 26.Rd1 c4 27.Qa1 Qg4 28.Rd8 1–0. orane (2130) – Ignorante29, Caissa.com, 2004.

4.Nf3 d6 5.e3 0-0 6.Bd3 c5=.

4.Nf3 d6 5.e3 0-0 6.Be2 a5 7.b5=.

4.Nf3 d6 5.e3 0-0 6.Be2 c5 7.0-0 Ne4 8.Bb2 cd4 9.Nd4 Nc6 (9...Nf6 10.c4+=) 10.Nc6 bc6 11.Bg7 Kg7 12.Bf3 d5 13.Be4 de4 14.Nc3 f5 15.Qe2 a5 16.Rfd1 Qb6 17.Qc4 Ba6 (17...Rf6!?+=) 18.Qe6+/– Rf7 (18...Ra7 19.Qe5 Kf7 20.ba5+/–) 19.Nd5+– cd5?? (better is 19...Qb7 20.Qe5 Kg8+–) 20.Qb6 (20...Bc4 21.b5+–) 1–0. kamret (2230) – rishikesh (2040), GameColony.com, 2003.

4.Nf3 d6 5.e3 0-0 6.Be2 Nbd7 7.0-0 Re8 8.Bb2 c6 (8...e5 9.c4=) 9.c4+= h6 (9...Qc7 10.Nc3+=) 10.Qd3 Qc7 11.Rd1 e5 (11...Nb6 12.Nc3+=) 12.de5 de5 13.e4 a5 14.Nbd2 Nb6 (14...b6 15.Nb3+=) 15.Be5 (15.Nb3 Na4 16.Bc1 Be6+=) 15...Re5 16.Ne5 Qe5 17.Qd8 Kh7 (better is 17...Qe8!? 18.Qb6 Nd7+=) 18.Qb6+/– ab4 19.Qb4 Ne4 20.Ne4 Qe4 21.Ra2 Be6 (21...Qf4+–) 22.Qb7 Re8 (22...Ra5 23.Qb1 Qf4 24.Qb4+–) 23.Bd3 Bc8 (23...Qg4 24.Rad2+–) 24.Be4 (24.Qf7 Qd3 25.Raa1 Qe2-+) 24...Bb7 25.Bf3 (25...Ba6 26.Bc6 Bc4 27.Be8 Ba2 28.a4+–; 25.Re2 f5 26.Bf3 Re2 27.Be2 c5+–) 1–0. b4_player (2240) – Herrtoto (1860), GameColony.com, 2003.

4.Bg5 d5 5.h3 (5.e3 Ne4 6.Bf4 f6=) 5...Qd6 (5...Ne4 6.Bf4=+) 6.e3= e5 7.f4 (better 7.Nc3!?=) 7...ed4-/+ 8.ed4 0-0 9.Nf3 (9.Qf3 Bf5-/+) 9...h6 (9...Ne4!? 10.Bb5 c6-+) 10.Bf6-/+ Qf6 11.c3 (11.Qd2 a5! 12.ba5 c5-/+) 11...Qf4 12.Be2 (12.Qd2 Qd6-/+) 12...Qg3-+ 13.Kf1 Nc6 14.Kg1 (14.Qe1 Qd6-+) 14...Re8 15.Nh2?? (better 15.Qf1-+) 15...Bh3 16.Qf1 Nd4! 17.Qf2 (17.cd4 Bd4 Mate attack) 17...Ne2 18.Kf1 Qd3 19.gh3 Nc3 (19...Qh3 20.Ke1 Nc3 21.Kd2 Ne4 22.Kc1 Nf2 23.Ra2 Nh1 24.Rd2 Re1 25.Kc2 Qf5 26.Kb3 Rb1 27.Ka2 Ra1 28.Kb3 b5 29.Rd4 Bd4 30.Nf3 Qd3) 20.Kg2 Re2 21.Nc3 Rf2 (21...Qc3?! 22.Qe2 a5 23.ba5 Qa5 24.Ra2+=; 21...Bc3 22.Ra2 Rf2 23.Rf2-+) 22.Kf2 Bc3 (22...Bd4 23.Kg2 Qd2 24.Ne2 Qe2 25.Kg3 Be5 26.Kh4 g5) 23.Rad1 Bd4 24.Kg2 Qe4 (24...Qe2 25.Kg3 Be5 26.Kh4 g5) 25.Nf3 Qe2 26.Kg3 Bf2 27.Kg4 (27.Kg2 Bh4 28.Kg1 Qf2) 27…Qe4 0-1. valla - kovacic (2365), ChessWorld.net, 2017.

4.Bg5 Ne4 5.Bf4=.

4.c4 0-0 5.Nf3 d6 6.Be2 e5 7.d4 ed4 8.ed4 (8.Qd4?? Nfd7 9.Qd2 Ba1-+; 8.Nd4?! c5 9.Nf3 Ne4=) 8...d5 9.c5 Ne4 10.0-0 b6 (10...a5 11.Bb2=) 11.Ra2 Nc6 (11...a5 12.cb6 ab4 13.bc7 Qc7 14.Rc2=) 12.Rc2 1–0. Cirulis,Ilmars (1905) – Austin,Nathan (1855), FICGS, 2016.

4.d4 0-0=.

4.Nf3 0-0 5.c4 (5.d4 d5=) 5...d6 6.d3 (6.d4 e5=) 6...b6 (6...e5 7.e4=) 7.Bb2 Bb7 8.Be2 e5 (8...a5 9.b5=) 9.0-0+= Nbd7 10.Nfd2 (10.Nc3 c5+=) 10...Re8 (10...d5 11.Nc3=) 11.Nc3 c5 (11...a6 12.Bf3 c6 13.Qb3=) 12.Bf3+= Bf3 13.Qf3 (worse is 13.gf3 Nf8=) 13...a5 (13...Qe7 14.Nde4+=) 14.b5 Nf8 (14...Qe7 15.Nde4+/–) 15.a4 (15.Nde4 Rb8+/–) 15...h5 (15...Ne6 16.Nde4+=) 16.Rad1 Ne6 17.Nce4 Qe7 (17...Ng4+/–) 18.Nc3 Rad8 (better is 18...Qd8!?=) 19.Nde4+/– Nh7 (19...Ne4 20.Qe4 Rb8 21.Nd5+=) 20.Nd5 Qa7 21.Nec3 Nc7 22.Nc7 Qc7 23.Nd5 Qa7 24.e4 Ng5 25.Qg3 Ne6 26.Qh4 Nd4 27.Bd4 cd4 (27...ed4 28.f4+–) 28.f3 (28.f4 Qb7+–) 28...Rb8 29.g4 hg4 30.fg4 Qd7 31.g5 Re6 32.Rf3 Rb7 (32...Kf8+–) 33.Nf6 Bf6 34.gf6 (34.Rf6?! d5 35.ed5 Rf6 36.gf6 Qf5+/–) 34...Qd8 (34...Rf6 35.Rf6 Qe7 36.Rdf1+–) 35.Rdf1 (35.Rdf1 Rf6 36.Rf6+–) 1–0. Cirulis,Ilmars (1675) – Ramos,Francis, FICGS, 2015.

4.e3 0-0 5.Be2 d6 6.0-0 e5 7.Bb2 Re8 (7...e4 8.Nd4=) 8.d4 ed4 9.Nd4 (9.Qd4?? Nh5 10.Qd5 Bb2-+) 9...Ne4 10.Nc3 Nc3 11.Bc3 Nd7 12.Qe1 (12.Qd2 Nf6 13.Bf3 d5=) 12...Qe7 13.Rd1 Nf6 14.Nb3 Bf5 15.Bd3 Bd7 (15...Bd3 16.cd3 c5 17.Qe2=) 16.Bd4 Rac8 17.c4 (17.Qc3 Bg4 18.Rd2 c6=) 17...c5 18.Bc3 b6 (18...Be6 19.bc5 dc5 20.Qe2=) 19.Nd2 Ba4 (19...Be6 20.b5=) 20.Rb1 Bc6 21.Be2 (21.b5 Bb7=) 21...Red8 22.Qc1 (22.b5 Ba8=) 22...cb4 23.Rb4 Bf8 (23...d5 24.Bd4=) 24.Ba1 (24.Bd4 d5=) 24...d5 25.Nb3 Ne8 (25...dc4 26.Rc4 Bb7 27.Rc8 Rc8 28.Qb2=) 26.Rd1 Bb7 (26...Qc7 27.c5 bc5 28.Nc5+=) 27.Qb2 Bg7 28.Nd4 (28.Qb1 dc4 29.Rd8 Rd8 30.Bg7 Qg5=) 28...dc4 29.Bc4 Qd7 (29...Qg5 30.Bf1=) 30.Qe2 (30.Qb3 Qe7=) 30...Nd6 31.Bd3 Ne4 32.Qe1 Bf6 (32...Qe7 33.Bb2=) 33.f3 Nc5 34.Bb5 Qe7 35.Bc4 Bg5 (35...Ba6 36.Qe2=) 36.e4 a5 (36...Ba6 37.Ba6 Na6 38.Rb3=) 37.Rb6+= Na4 38.Rb7 Qb7 39.Bd5 (39.Qa5 Be3 40.Kf1 Nb2=) 39...Qb6 40.Kh1 Nb2 41.Bb2 (41.Rb1 Qd4 42.Bb2 Qa4=) 41...Qb2+= 42.Nc6 (42.Qa5?? Qd4!? 43.Qe1 Qa4-+) 42...Rd7 (42...Rc6 43.Bc6 Rd1 44.Qd1 Qa3 45.g3+=) 43.Na5 (43.Qa5!? Qc2 44.Rg1=) 43...Qc2 0–1. Cirulis,Ilmars (1790) – Nichols,Scott (2315), FICGS, 2016.

4.e3 d6 5.c4 (5.d4 0-0=) 5...e5 6.d4 0-0 7.Be2 ed4 8.ed4 (8.Qd4?? Nfd7 9.Qd2 Ba1-+; 8.Nd4?! c5 9.Nf3 Ne4=) 8...Bg4 (8...d5 9.0-0=) 9.Be3 Ne4 (9...d5 10.0-0=) 10.h3 Bf5 11.0-0 Re8 12.Re1 c5 13.Ra2 Nc6 (13...a5 14.dc5 dc5 15.Qd8 Rd8 16.bc5=) 14.d5+= Ne5 15.Nfd2 (15.Ne5 Re5 16.Bf3 Qe7+=) 15...Nd2= 16.Qd2 (16.Nd2 b6=) 16...Qh4 17.Rc1 b6 (17...Bf6 18.bc5 dc5 19.Bf4+=) 18.Bg5 Qd4 19.Be3 Qd2 20.Rd2 (20.Nd2 Nd3 21.Bd3 Bd3=) 20...h6 (20...a5 21.bc5 bc5 22.g4=) 21.Nc3 Rad8 22.g4 (22.Nb5 a5=) 22...Bd7 (22...Bc8 23.Nd1=) 23.bc5 dc5 (23...bc5 24.Ne4 Ng4 25.Nd6 Ne3 26.Ne8 Re8 27.fe3 Re3 28.Bd3+=) 24.a4 (24.Nb5 Bb5 25.cb5 Rd6+=) 24...f5 (24...g5 25.Nb5=) 25.g5 Nf7 (25...hg5 26.Bg5 Rc8 27.h4=) 26.gh6+= Be5 27.Ra2 (27.f4!? Bd6 28.Kf2=) 27...f4+= 28.Bd2 Bh3 29.a5 Ng5 (29...Nh6 30.ab6 ab6 31.Rb1=) 30.Re1+= Kh7 31.Bd1 (31.Nb5 ba5 32.Na7 A) worse is 32...Kh6 33.Nc6+– (33.Ra5?! Ne4 34.Ra3 Bd7=; worse is 33.Ba5 Ra8 34.Nb5 Bd4-/+); B) 32...Bd7 33.Ba5 Ra8=) 31...Bf5 (31...Kh6 32.Nb5 Bb8 33.ab6 Re1 34.Be1 ab6 35.Ra6+=) 32.ab6 (32.Nb5 Bd3 (worse is 32...Kh6 33.Na7 Bb1 34.Ra3+/–) 33.Be2 Be2 34.Re2 Nf3 35.Kg2 Nd2 36.Red2 Kh6 37.Na7 ba5+=) 32...ab6 33.Ra3 (33.Kh1 Kh6 34.Ra7 Bd4 35.Re8 Re8-/+) 33...Bf6 (33...Kh6!? 34.Kg2 Bh3 35.Kh2 Bd7+=) 34.Re8= Re8 35.Kg2 (35.Ra6 Kh6 36.Rb6 Be5=) 35...Bh3 36.Kg1 Kh6 37.Bf4 (37.Rb3!?=) 37...Re1-/+ 38.Kh2 Bf5 (38...Bf1!?+=) 39.Ba4= Rf1 40.Nb5 (40.Kg3 Rg1 41.Kh2 Rg4 42.Bg5 Kg5-/+ (42...Rg5?! 43.Ne2=)) 40...Rf2 (40...Be4 41.f3 Bf3 42.Kg3+=) 41.Kg3= Rf1 42.Nd6 Kh5 43.Bg5 (43.Nf5 Ne4 (43...gf5?! 44.Be8 Kh6 45.d6=) 44.Kg2 Rf2 45.Kg1 Rf4 46.Ng3 Ng3 47.Rg3 Rc4-+) 43...Kg5 44.Nf5 gf5 45.Kg2 Rc1 46.Bb5 Be5 47.Rd3 Bd6 48.Re3 Kg4 49.Kf2 Rc2 ½–½. Cirulis,Ilmars (1905) – Nichols,Scott (2295), FICGS, 2016.

3.Bb2 Bg7 4.a3 0-0 5.e3 d5 6.Nf3 c5 7.bc5 Nc6 8.d4 Ne4 9.Bd3 Bf5 10.Nbd2 Qa5 11.0-0 Nc3 (better is 11...Nc5!? 12.Bf5 gf5+=) 12.Bc3+/– Qc3 13.Bf5 gf5 14.Nb3 e5 15.Qd3 Qd3 16.cd3 e4 17.de4 fe4 18.Nfd2 b6 19.cb6 ab6 20.Rfc1 Rfc8 21.a4 Nb4 22.Rc8 Rc8 23.a5 ba5 24.Na5 Nd3 25.Ndb3 (better is 25.Nab3!?+=) 25...Rc2=+ 26.Rf1 Bf6 27.Nb7 Bh4 28.g3= Be7 29.Na1 Rb2 30.Na5 f5 31.Nc6 Bf6 32.Na5 Kf7 33.N5b3 Kg6 34.Nc5 Nc5 35.dc5 Rb7 36.Rc1+/– Rc7 37.Nb3 Kf7 38.Kg2 Ke6 39.Rc2 Kd7 40.Na5 d4 41.h3?? d3=+ 42.c6 Kc8?? 43.Rd2?? Bc3-+ 44.Rd1 Ba5 45.g4 fg4 46.hg4 Rc6 47.Kg3 d2 48.Kf4 Rc1 49.Rd2 Bd2 50.Ke4 Rc4 51.Kd3 Rg4 52.Kd2 h5 53.Ke2 h4 54.Kf3 Rg8 (54...Rg8 55.Ke4 h3-+) 0–1. Fournier,Frederic (1645) – King007 (1605), Active, 2006.

3.b5 Bg7 4.Nc3 0-0 5.Qb1 d5 6.g3 Bf5 7.Bg2 c6 8.Nf3 d4 9.Nd1 Nbd7 (better is 9...Qd7!?=+) 10.Nd4 cb5 11.Nf5 gf5 12.Qb5 Rb8 13.Qf5 Kh8 14.h4 Nb6 15.Bb2 e6 16.Qf4 Nbd5 17.Bd5 Qd5 18.Bf6?? Qh1 0–1. xtom – mintaraga, kurnik, 2011.

3.d4 Bg7 4.c4 0-0 5.Nf3 d5 6.c5 Bf5 7.Nc3 c6 8.e3 Nbd7 9.Bd3 a5 10.b5 Qb8 11.b6 (11.Bf5 gf5 12.Rb1 Qc7+=) 11...e5 12.de5 Ne5 13.Ne5 Qe5 14.Qc2?? (better is 14.Rc1=+) 14...Bd3-+ 15.Qd3 Ne4 16.Rc1 Nc3 17.Bb2 d4 18.0-0 Qe4 19.Qc4?? de3 20.Bc3 Qc4 (20...Qc4 21.Bg7 ef2 (21...Kg7?! 22.Rc4 ef2 23.Rf2=+) 22.Kh1 Qa2-+ (22...Kg7?! 23.Rc4 Rad8 24.g4-/+)) 0–1. iczker – sahtine (1915), kurnik, 2011.

4.Bb2 0-0 5.d3 d6 6.e4 e5 7.Be2 c6 8.0-0 a6 9.Nbd2 Nbd7 10.c4 Nh5 11.g3 Qe8 12.d4 f5 13.de5 de5 14.ef5 gf5 (14...Rf5? 15.g4 Rf3 16.Bf3+–) 15.Nh4 Ndf6 16.c5 Bd7 17.Nc4 f4? (better is 17...e4 18.Nd6 Qe7+–) 18.Nd6 (18.Be5?! fg3 19.fg3 Rd8+–; 18.Ne5?! Bh3 19.Bc4 Be6+–) 18...Qe6 19.Bh5 Qh3 (19...a5 20.Re1 fg3 21.hg3 Nh5 22.Qh5+–) 20.Be5 Nh5 (20...a5 21.Bf3 (worse is 21.Bf4 Nd5 22.Ne4 Ba1+–) 21...fg3 22.fg3 ab4 23.Qd4+–) 21.Qh5 Bg4 (21...Be5 22.Qe5 Qg4+–) 22.Qg5 (22.Qg5 Qf1 23.Kf1 Rf7 24.Nf7 Be2 25.Ke2 f3 26.Ke1 Kf8 27.Qg7 Ke7 28.Nd6 Ke6 29.Qf7 Ke5 30.Nf3) 1–0. bratek55 (1715) – lakyluciano (1615), kurnik, 2011.

4.d3 0-0 5.Bb2 b6 6.e4 Bb7 7.Be2 d5 8.e5 Nfd7 9.d4 e6 10.0-0 a5 11.ba5 ba5 12.c4 dc4 13.Bc4 Nb6 14.Be2 Nd5 15.g3 Nc6 16.Nbd2 Ncb4 17.a3 Na6 18.Qc2 c5 19.Ne4 cd4 20.Bd4 Rc8 21.Qa4 Nb6 22.Bb6 Qb6 23.Rab1 Qa7? 24.Nd6+– Bf3 25.Nc8 Rc8 26.Bf3 Be5 27.Qa5 Bd4? 28.Rb7 Bf2 29.Rf2 Rc1 30.Kg2 Qd4 31.Qa6 (31.Qa6 Rc8 32.Rf7 Qf2 33.Kf2 Rc2 34.Ke3 Kf7 35.Bg4 Rc3 36.Kd2 Ra3 37.Qe6 Kf8 38.Qd6 Ke8 39.Bd7 Kf7 40.Be6 Kg7 41.Qe7 Kh6 42.Qf8 Kg5 43.Qf4 Kh5 44.Qh4) 1–0. bratek55 (1660) – roberthxx, kurnik, 2011.

3.a5 Nc6-/+ 4.c3 Ne5 (4...e5 5.g3+=) 5.d3 (5.d4 Ng6=) 5...h6 (5...d5 6.d4 Ng6 7.h4+=) 6.Na3 (6.d4 Ng6=) 6...d6 (6...d5 7.e3=) 7.Nf3 (7.e4 Nc6=) 7...Nf3 8.ef3 e5 9.Be3 (9.Be2 d5+=) 9...d5+= 10.Be2 (10.d4 Bd6=) 10...Bd7 11.h3 Be6 12.Qa4 Bd7 13.b5?? Bd6 14.Qb3+= 0-0 15.d4 e4 16.f4 Ba3 17.Qa3 Bb5 18.Bb5 ab5 19.Qb4 c6 20.0-0 Nd7 21.g3 f5 22.Kg2 Rf7 23.Rh1 g6 24.Qd6 Rf6 25.Qa3 Ra6 26.Qb4 Kh7 27.h4 Re6 28.h5 Qa8 29.hg6 Kg6 30.Rhe1 h5 31.Rh1 Qh8 32.Rh4 Kf7 33.Rah1 Nf6 34.c4 b6 35.cb5 Ra5 36.Rc1 c5?? 37.dc5+/– Qf8 38.Bd4 Kg6 39.Qb2 bc5 40.Bc5 Qb8 41.b6 Rc6 42.Be3 Rc1 43.Qc1 Qb7 44.Bd4 Ra6 45.Qc3 Nd7? 46.Rh1 Nb6? 47.Qd2?? Nc4+= 48.Qe2 Qh7+= 49.Ra1? Ra1-+ 50.Ba1 Qe7 51.Qe1 h4 52.Qh1? Kh5?? 53.Qh4?? Qh4-+ 54.gh4 Kh4 55.Bf6? Kg4 56.Be5 d4! 57.Bd4 Kf4 58.Kf1 Kf3 59.Ke1 f4 60.Kf1 e3 61.fe3 Ne3 62.Kg1 Ke2 63.Kh2 f3 64.Kg3 f2 65.Be3 f1Q 66.Bb6 Qf5 67.Kh2 Qf3 68.Kg1 Qg3 69.Kh1 Kf1 70.Bf2 Qg2 0–1. MissLayla – xorb, ChessWorld.net, 2009.

3.Bb2 b6 4.e3= g6 (4...Bb7 5.b5=) 5.b5 ab5 6.ab5 Ra1 7.Ba1 c6 (7...Bg7 8.Nf3=) 8.c4 (8.Bf6 ef6 9.Nf3 Be7+=) 8...Bg7= 9.Nf3 cb5 10.cb5 Bb7 11.Na3 0-0 12.Nc4 (12.Be2 Qc7=) 12...d6 (12...d5 13.Nce5=) 13.Be2= Nbd7 14.0-0 Nc5 (14...Qc7 15.d3=) 15.Nd4 (15.Bf6 Bf6 16.d4 Nd7+=) 15...e5 (15...Qc7 16.Nc2=) 16.Nc6+= Bc6 17.bc6 Qc7 18.Qb1 Exerts pressure on the isolated pawn (18.d4 ed4 19.ed4 Ne6+/-) 18...Rb8 (18...Qc6 19.Qb6 Qb6 20.Nb6=) 19.d4 (19.Qb5 e4+=) 19...ed4 20.ed4 Nce4 21.d5 b5 22.Bf6 Bf6? (better 22...Nf6!? 23.Ne3 b4+=) 23.Qe4+- bc4 24.Bc4 Bg7 (24...Be5 25.Rb1+-) 25.Re1 (25.Rb1 Ra8+-) 25...h6 (25...Be5 26.Rb1+-) 26.Qe7 Qe7 27.Re7 Rb1 28.Bf1 Rd1?? (28...Rc1+-) 29.c7 Rc1 30.Rd7 (30.Re8!? Kh7 31.c8Q Rc8 32.Rc8 Bf6+-) 30...Kh7 31.g3 Rc5 (31...g5 32.Kg2 Bd4 33.Ba6+-) 32.Kg2 Be5 (32...Kg8 33.Bb5!! Rc7 34.Rc7+-) 33.Bb5!! Kg7 (33...Rb5 34.c8Q Combination) 34.Bc6 Rc2 35.c8Q Bd4 36.Rd8 (36.Rf7 Kf7 37.Be8 Kf8 38.Qc2 Ke8 39.Qg6 Ke7 40.Qe6 Kd8 41.Qd6 Ke8 42.Qh6 Bf2 43.Qc6 Kd8 44.d6 Bb6 45.g4 Ba5 46.g5 Bb6 47.g6 Ba5 48.g7 Bc3 49.g8Q) 36...Rf2 37.Kh3 Bf6 38.Rg8 (better 38.Rh8 Be7 39.Qg8 Kf6 40.Rh7+-) 38...Kh7 39.Qd7 (39.Qf8 Bd4 40.Be8 Bc3 41.Bf7 Rh2 42.Kh2 Bd4 43.Bg6) 39...Bg5 (39...Kg8 40.Qd6 h5+-) 40.Qe8 (40.Qe8 Be7 41.Bb5 Bg5 42.Bd3 Rh2 43.Kh2 Bf6 44.Bg6 fg6 45.Qg6) 1-0. chessbit - M_Brain, Rated Bullet game, lichess.org, 2020.

3.Bb2 Nd5 4.b5= ab5 5.ab5 Ra1 6.Ba1 f6 (6...Nf6 7.Nf3=) 7.e4 Nb6 8.Bd3 (8.Nc3 e5+=) 8...e5 9.Nf3 d6 10.Nh4 N8d7 (better 10...g6!?=) 11.Qh5+/- Ke7 12.Ng6! Ke6?? (12...hg6 13.Qh8 Pinning (13.Qh8 Deflection)) 13.Nh8+- Be7 (13...d5 14.Nc3 c6 15.ed5 Nd5+-) 14.Qf7 (14.Qf5) 1-0. DEFFM – GuestCJVK, freechess.org, 2021.

3.Bb2 g6 4.b5 a5 (4...d5 5.Nf3=+) 5.e3 b6 (5...Bg7 6.Nf3=) 6.Nf3 Bb7 7.h4 (7.Bf6 ef6 8.Bc4 g5+=) 7...h5 (7...Bg7 8.Bf6 Bf6 9.d4=) 8.Nc3 d6 9.Ng5 Nbd7 10.Nce4 Bh6 11.f3 (11.Nf6 Nf6 12.Bc4 0-0=) 11...Be4 (11...e5 12.Nc3=+) 12.Ne4 0-0? (12...Bg7 13.Be2=) 13.g4 (13.Nf6 Nf6 14.Bf6 ef6+/-) 13...hg4? (better 13...Bg7+=) 14.fg4?? (better 14.Nf6 Nf6 15.Bf6 ef6 16.fg4+-) 14...Ng4?? (better 14...Ne4 15.Bg2 d5-/+) 15.Qg4+- Ne5 (15...Bg7 16.h5 d5 17.hg6 e5+-) 16.Be5 de5 17.h5 Kg7 (17...Qc8 18.Qg3 g5 19.Ng5+-) 18.hg6 fg6 19.Bd3 (19.Qe6 Rf5 20.Rg1 Rf6 21.Qe5 Kf8+-) 19...Qe8 20.Ng3 Qf7 21.Nh5 (better 21.Rf1 Bf4 22.ef4 e4 23.Be4 Rad8 24.Nf5 Qf5 25.Bf5 Rf5+-) 21...Kh7 22.Ng3 (better 22.Qh4 Bg5 23.Qh2 Kg8+-) 22...Qf2?? (22...Kg7 23.Rf1 Bf4 24.ef4 e4 25.Be4 Rad8+-) 23.Kd1+- Rf6 (23...Qf3 24.Qf3 Rf3+-) 24.Ne4 Qf3 25.Qf3 Rf3 26.Ng5 Kg7 27.Nf3 Rf8 (27...Rd8 28.Ke2 Rd6 29.Rag1+-) 28.Ne5 Rf2 (28...Rf6 29.Ng4 Bg5 30.Nf6 Bf6 31.c3+-) 29.Ng6 (better 29.Rh6!? Kh6 30.Ng4 Kg7 31.Nf2 g5+-) 29...e5 30.Ne5 Kf6 31.Ng4 (31.Ng4 Ke7 32.Nf2+-) 1-0. chessbit (1670) - jaevus (1665), Rated Bullet game, lichess.org, 2020.

3.Nc3 d5 4.Bb2 e5 5.b5 (5.Na2 Bd6-/+) 5...d4 6.Nb1 Bb4 (6...ab5!? 7.Nf3 e4 8.Nd4 ba4-/+) 7.Nf3=+ Nbd7 8.c3 dc3 9.Nc3 0-0 10.g3 b6 (10...ab5 11.ab5 Ra1 12.Ba1=+) 11.Bg2=+ Bb7 12.0-0 e4 13.Nd4 Nc5 14.Nc6 (14.Nc2 Bc3 15.Bc3 Nd5=) 14...Bc6=+ 15.bc6 Qd6 16.Qc2 Now all is on e4 16...Rfe8 17.d4 (17.Rfd1!?=+) 17...ed3-/+ 18.ed3 Rad8 (18...Qd3 19.Qb1-/+) 19.Ne4 (better 19.d4!? Ne6 20.Rfd1=+) 19...Nfe4-/+ 20.de4 Ne6 (better 20...Qc6!? 21.e5 Qg6 22.Qg6 hg6-+) 21.e5 (21.Rad1!? Qe7 22.Rd5=) 21...Qc5 22.Qc5 Nc5 23.Rad1 (23.f4 Nd3 24.Ba3 Bc3=+) 23...Rd1 (23...Na4 24.Ba1-/+) 24.Rd1 a5 (24...Na4 25.Ba1 b5 26.Rd4-/+) 25.Bh3 (25.Ba1 h6=) 25...h6 (25...Na4!? 26.Bd4 Rd8-/+) 26.Bd7=+ Re7 (26...Ra8 27.Ra1=+) 27.e6 (27.Bf5!? Kf8 28.Rd8 Re8 29.Re8 Ke8 30.Bc2=) 27...Ne6=+ 28.Be6 (better 28.Bc8!?=+) 28...Re6-+ (28...fe6?! 29.Rd8 Kf7 30.Be5+=) 29.Rd8 Kh7 30.Rd7 Rc6 31.Rf7 Bc3 32.Bc1 (32.Bc3 Rc3 33.f4 Kg6-+) 32...Rc4 33.Bh6?? (33.Be3-+) 33...Kh6 34.Rd7 Ra4 (34...Be5 35.Kf1-+) 35.Rc7 Bb4 (35...Bd4!? 36.Rd7-+) 36.Rc6 Kh7 37.Rb6 Ra1 (37...Ra2 38.Rc6-+) 38.Kg2 Rb1 (38...Ra2 39.g4-+) 39.Kh3 (39.Ra6-+) 39...Bc5 (better 39...a4 40.Ra6 a3-+) 40.Rb1+- Bb4 (better 40...Bf2 41.Kg4 Bd4+-) 41.Ra1 Kg8 42.Ra2 g6 (42...Kf7 43.Kg4+-) 43.Kg4 Kg7 44.f4 Kf6 (44...Kf7 45.f5+-) 45.Kf3 (45.Rc2 Be7+-) 45...Kf5 46.g4 Kf6 47.Ke4 (47.g5 Kf5+-) 47...Ke6 (47...g5 48.Rc2 gf4 49.h4+-) 48.h4 Kf7 49.Ke5 (49.f5 Be1+-) 49...Bc3 50.Ke4 Kf6?? (50...Bb4 51.f5 Be1+-) 51.g5 Kg7 (51...Kf7 52.Rc2 Be1 53.Rc7 Ke8 54.Rh7+-) 52.f5 gf5 53.Kf5 Kh7 54.h5 Kg7 55.Rc2 (55.h6 Kf7 56.g6 Kg8 57.Rc2 Kf8 58.Ke6 Ke8 59.g7 Kd8 60.Rc3 a4 61.g8Q) 55...Bb4 (55...Bd4 56.h6 Kh7 57.Rc7 Kh8 58.g6 Bg7 59.Rc8 Bf8 60.Rf8) 56.Rc7 (56.h6 Kh7 57.g6 Kg8 58.Rc8 Bf8 59.Kf6 a4 60.h7 Kh8 61.Rf8) 56...Kf8 57.Ra7 (57.g6 Bd2 58.g7 Kg8 59.Kg6 Bb4 60.Rc8 Bf8 61.gf8Q) 57...Ke8 58.h6 Kf8 59.g6 Kg8 (59...a4 60.g7 Ke8 61.g8Q Bf8 62.Qe6 Be7 63.Qe7) 60.Ke6 (60.Ke6 Ba3 61.Ra8 Bf8 62.Kf6 a4 63.h7 Kh8 64.Rf8; 60.h7 Kh8 61.Ra8 Bf8 62.Rf8 Kg7 63.h8Q) 1-0. Zpytasz (1670) - NvanEunen (1645), Rated Rapid game, lichess.org, 2017.

3.c4 e6 4.Bb2 (4.Ba3!?+=) 4...Bb4-/+ 5.Nc3 (5.Bc3 Nc6-/+) 5...Nc6 (5...0-0 6.Nf3-/+) 6.e3 (6.Nf3 0-0-/+) 6...d5 7.g3 (7.Nf3 0-0-/+) 7...h5 (7...dc4 8.Bc4 Ne5 9.Bf1-+) 8.Nge2 (8.Nf3!?-/+) 8...dc4-+ 9.Bg2 Rg8 (9...Ne5 10.Nf4-+) 10.0-0 (10.Bc6 bc6 11.Rc1 Rb8-+) 10...g5 (10...Qd6 11.Nf4-+) 11.Qc2 (11.Bc6 bc6 12.Rb1 e5-/+) 11...Rg6 (11...Na5 12.Na2 Be7 13.Nac1-/+) 12.Nd4 (better is 12.Bc6!? bc6 13.Na2-/+) 12...Nd4-+ 13.ed4 c6 (13...h4 14.Ne4-+) 14.Rfe1 (14.Ne4 Nd5-+) 14...Nd5 (14...h4 15.Ne4-+) 15.Ne4 (15.a5 Be7 16.Qa4 Nf6-/+) 15...a5 (15...b5 16.Nc5-+) 16.Qc4-/+ f5 (better is 16...h4-/+) 17.Nc3= Nc3 (17...h4 18.Bd5 cd5 19.Nd5=) 18.dc3 Bd6 (18...Be7 19.Qe2 Rh6 20.Ba3=) 19.d5 (19.Bc6 Ke7 20.Bg2 h4+/–) 19...e5 (better is 19...cd5 20.Qd5 Qe7 21.Qb5 Bd7=) 20.dc6+– b6? (20...Qb6 21.Ba3 Be6+–) 21.c7 Qe7 (21...Qc7 22.Qc7 Bc7 23.Ba8+–) 22.Ba8 (better is 22.Bc6 Kf8 23.Ba8 Qc7+–) 22...Bc5 (22...Qc7 23.Qe2 h4 24.Qh5+–) 23.Bc6! Kf8 (23...Rc6 24.Qd5 Double attack (24.Qd5 Decoy)) 24.Rad1 (better is 24.Bb5 e4 25.Qe2+–) 24...e4 (24...Qc7 25.Bb5 h4+–) 25.Rd8 Kg7 26.Qg8 (better is 26.Rg8 Kh7 27.Rg6 Qf8 28.Rg5 e3 29.fe3 Be7 30.Rf5 Bf5+–) 26...Kh6 27.Qh8 Qh7 28.Qe5 (28.Bd7 f4 29.c4 Bf2 30.Kf2 e3 31.Kg1 Rg8 32.Rg8 Qh8 33.Rh8 Kg6 34.Rg8 Kh6 35.Rd1 Kh7 36.Rg7 Kh8 37.Bc8 b5 38.Rd8) 28...Be6 (28...Re6 29.Qd5 Qc7 30.Rh8 Kg6 31.Rg8 Kf7 32.Rc8 Qe5+–) 29.Rh8 h4 30.Rh7 Kh7 31.c4! Bc4 (31...Bc4 32.Qh8) 32.Qh8 1–0. croach – valerypavlovich, net–chess.com, 2017.

4.c3=+.

4.e3=+.

4.Bb2 Bg7 5.e3 d5 6.c4 0-0 7.cd5 Nd5 8.Bg7 Kg7 9.Qb3 Nc6 10.b5 ab5 11.Nc3 Nc3 (11...Be6 12.Qb2 f6 13.Bb5=+) 12.Qc3= Kg8 (12...f6 13.Bb5 Na5 14.0-0=) 13.Bb5 Na5 14.h4 h5 15.d4 b6 (15...Bg4 16.Ne5+=) 16.0-0+= Bb7 17.Ng5 (17.Ne5 e6+=) 17...Qc8 18.e4 c6 19.Be2 Ba6 20.Ba6 Qa6 21.Rfb1 Rab8 22.e5 Qc8 (22...Qc4 23.Qc4 Nc4 24.Rb4+=) 23.Re1 White prepares e6 23...Rd8 (23...Qf5 24.Re3 Qg4 25.Re4+/-) 24.Rac1 Kg7? (better 24...Rd5+/-) 25.e6+- f6 26.Nf7 Rd5? (26...Rh8+-) 27.Qd2 g5 28.hg5 fg5 29.Re5 Re5 30.Ne5 (30.de5?! Qe6 31.Ng5 Qg4+/-) 30...Qe6 (30...Kf6+-) 31.Qg5 Kh7 32.Qh5 Qh6 33.Qf5 Kg7 (33...Kh8 34.Nf7 Rc3 Rf3 Rxf3 Nc4 Rh3 Ne3 Qg8) 34.Qf7 Kh8 35.Ng6 (35.Ng6 Qg6 36.Qg6 Nc4 37.Rc3 Ne3 38.Re3 Rf8 39.Rh3) 1-0. Panza – mizuzul, ChessWorld.net, 2021.

4.d4= Bg7 5.e3 0-0 6.Bd3 d6 7.0-0 c5 8.c3 cb4 9.cb4 e5 10.Nc3 ed4 11.Nd4 Nc6 12.Nc6 bc6 13.Qc2 (13.Bb2 d5=) 13...Be6 14.e4 Qb6 (14...Ng4 15.Bf4=) 15.Rb1+= Rab8 (15...Ng4 16.Bf4 Rad8 17.Ne2+=) 16.Be3 Qc7 (16...Qb7 17.Bd4+=) 17.Ba6+/– d5 (17...Ng4 18.Bf4+/–) 18.Nd5 Nd5 19.ed5 Bd5 20.b5 (20.Bc4 Qd7 21.Rfd1+–) 20...Qe5 (better is 20...Qd7!? 21.Rb4 cb5 22.ab5 Rfd8+/–) 21.bc6+– Rb1 22.Rb1 (22.Qb1?! Bc6 23.Bb5 Rb8+/–) 22...Be4 (22...Qc7 23.Bb7+–) 23.Bd3 Bd3 24.Qd3 Rc8 (24...Bf6+–) 25.Qd7 Qc7 (25...Qf5 26.Qf5 gf5+–) 26.Qc7 Rc7 (26...Re8 27.Rb8 Bc3 28.Bh6 Bg7 29.Re8 Bf8 30.Rf8) 27.Rb8 Bf8 28.Bh6 Rc6 (28...Rc8 29.Rc8 f5 30.Rf8) 29.Rf8 1–0. market (2180) – Analogue_Bubble_Bath (1705), GameColony.com, 2002.

4.d4 Bg7 5.e3 d6 6.Bd3 Nbd7 7.Bb2 0-0 8.0-0 Re8 9.e4 e5 10.d5 c6 11.c4 c5 12.b5 Nb6 13.a5 Nbd7 14.b6 Ng4 15.Nc3 Ndf6 16.h3 Nh6 17.g4 Nhg4 18.hg4 Ng4 (18...Bg4 19.Kh2+/–) 19.Kg2+– Qd7 20.Rh1 h5 (20...f5 21.Kf1+–) 21.Qe2 Nh6 22.Bc2 Qg4 23.Kf1 Rf8 24.Ba4 f5 25.Rh4 Qh4 (25...fe4 26.Rg4 ef3+–) 26.Nh4 Kh7 27.Ke1 fe4 (27...Bf6 28.Nf3+–) 28.Ne4 Bg4 (28...Bf6 29.Nf3 Bg4 30.Nf6 Rf6 31.Ng5 Kg7 32.f3+–) 29.f3 Bh3 (29...Bf6 30.Nf6 Rf6 31.fg4 Ng4 32.Nf3+–) 30.Ng5 Kg8 31.Nh3 Bf6 32.Ng6 Rf7 33.f4 Kg7 34.fe5 de5 35.Qh5 Raf8 36.Nf8 Rf8 37.Ng5 (37...Rf7 38.Bc2 Kg8 39.Qg6 Bg7 40.Ne6 Nf5 41.Bf5 Re7 42.Qh7 Kf7 43.Qg7 Ke8 44.Qf8 Kd7 45.Qd8) 1–0. marekt (2390) – GolfSuper, ChessWorld.net, 2003.

3.Ba3 e5 4.b5 Ba3 5.Ra3 Ne7 6.d4=+.

3.Ba3 e6 4.b5 Ba3 5.Ra3 Na5 6.e4=+.

3.b5 Nb8 4.c4 e6 5.Nf3 Be7 6.Qc2=.

3.b5 Ne5 4.d4 Ng6 5.Nf3 d5 6.e3=.

3.c3 d5 4.d4 e6 5.Bg5 h6 6.Bf6=+.

3.c3 e5 4.d4 ed4 5.b5 Na5 6.cd4=+.

3.Ra3 e5 4.Rb3-/+.

3.Ra3 e6 4.Nf3 (4.Rb3!?-/+) 4...Bb4 5.c3? (better is 5.Rb3 Bd6 6.Ba3-/+) 5...Ba3-+ 6.d3 (6.Ba3 Nbd7 7.d4-+) 6...Bc1 7.Nfd2 Bd2 8.Nd2 b6 9.Ne4 de4 10.de4 0-0 11.e3 Qd1 12.Kd1 Rd8 13.Kc2 Ne4 14.Bd3 Nc5 15.Rb1 Nd3 16.f3 Ba6 17.Rd1 Nc6 18.g3 Rd6 19.Rb1 Nce5 20.Rd1 Nf3 21.Rd3 Bd3 22.Kb3 Nd2 23.Kb4 a5 24.Ka3 Nc4 25.Kb3 c6 26.e4 b5 27.h4 ba4 28.Ka4 Bc2 0–1. useridzero – chessleon (2010), net–chess.com, 2006.

3.Bb2 e5 4.Be5 Bb4 5.Nc3 Nbd7 6.Bf4-/+.

3.Bb2 e6 4.b5 Bd6 5.c4 c5 6.d3=+.

3.Bb2 Bf5 4.b5 e6 5.e3 Bd6 6.h3 0-0 7.g4 Bg6 8.f4 Ne4 9.Nf3 f5 10.d3 Ng3 11.Rg1 Nf1 12.Kf1 Nd7 13.g5 Bh5 14.Nbd2 c5 15.Qe1 Qe8 16.Qh4 Rc8 17.Rc1 c4 18.d4?? c3-+ 19.Ba1 cd2 20.Nd2 Nb6 21.c3 Na4 22.c4 dc4 23.Nc4 Rc4! 24.Rc4 Qb5 (24...Qb5 25.Qh5 Qc4 26.Qe2 b5-+) 0–1. blackiwhite (1765) – kenez78 (1870), kurnik, 2011.

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

3.b5 e5 4.g4 d4 5.g5 Ne4 6.h4 Bf5 7.d3 Nd6 8.Ba3 e4 9.Bh3 Qd7 10.Bf5 Qf5 11.Nd2 ed3 12.cd3 Be7 13.Qb3 Nd7 14.Ngf3 Nc5 15.Bc5 Qc5 16.0-0 h6 17.Rfc1 Qf5 18.Rc7 Qg4 19.Kf1 Qh4 20.Nh4 hg5 21.Nhf3 0-0 22.Re7 Nf5 23.Rb7 Ne3 24.fe3 de3 25.Ne4 g4 26.Ne5 Rae8 27.Nf7 Re4 28.Kg2 Rf7 29.Qf7 Kh8 30.Qg7 1-0. banistyle (1930) - Azamat_01 (1860), lichess.org, 2020.

3.c3 Nc6 4.Ba3 a6 5.d3 e5 6.g3 Be6 7.Bg2 Qd7 8.Nd2 Bd6 9.Rb1 a5 10.b5 Ne7 11.Qc1 Ng6 12.c4 c6 13.c5 Be7 14.b6 0-0 15.Ngf3 h6 16.d4 ed4 17.Nd4 Bf5 18.Rb3 Rae8 19.Nf5 Qf5 20.f4 Bd8 21.h4 Re6 22.h5 Nh5 23.Bh3 Qf6 24.Be6 Qe6 25.Rh5 Re8 26.f5 Qe2 White king mated 0-1. Ogh - DaTruth123, ChessWorld.net, 2008. (=1.a4 d5 2.b4 Nf6)

3.c4 dc4 4.Qc2-/+.

3.c4 e6 4.d4 (4.Qb3 Nc6-/+) 4...Bb4 5.Bd2 Bd2 6.Kd2 (6.Nd2!? dc4 7.Nc4-/+) 6...Ne4 (better is 6...e5 7.Ke1 dc4 8.de5 Qd1 9.Kd1 Ng4-+) 7.Kc2?? (7.Ke1 dc4 8.e3 Qd5-+) 7...Bd7 (7...Nf2!? 8.Qd2-+) 8.f3?? Ba4! 9.Kd3 Bd1 10.Nc3 Nf2 11.Kd2 Bb3 12.Ke3 Nh1 13.g3 Bc4 14.Nh3 Qf6 15.g4 Qh6 16.g5 Qg6 17.f4 Qc2 18.Nd5 Bd5 19.Bg2 Bg2 20.Ng1 Qe4 21.Kd2-+ Qd4 22.Kc2 Qa1 23.Kd3 Nf2 24.Kc4 Bd5 25.Kc5 Qc3 26.Kb5 c6 27.Ka4 b5 0–1. useridzero – chessleon (2010), net–chess.com, 2006.

3.d4 e6 4.Ba3 Bd6 5.b5 0-0 6.Nf3=+.

3.Nf3 c5 4.bc5 e5 5.Ne5 Bc5 6.Nd3 Bb6 7.Ba3 Nc6 8.e3 a6 9.Be2 Be6 10.Nc3 Ne4 11.Rb1 Nc3 12.dc3 Na5 13.Nf4 Nc4?? (better is 13...Bc7+/-) 14.Bc4+- Qf6 (14...dc4 15.Ne6 fe6 16.Qh5 g6+-) 15.Nd5 0-0-0 16.Nb6 Kb8 17.Bd6 Ka7 18.Qd2 Bc4 (18...Bf5 19.Rd1 Bc2 20.Nd5 Qd6 21.Qc2+-) 19.Nc4 Qe6 20.Qd4 Ka8 21.Nb6 (21...Ka7 22.Nc8 Ka8 23.Qa7) 1-0. marekt - cornelious, ChessWorld.net, 2003.

3.Nf3 e5 4.Ne5 Bb4 5.Bb2 0-0 6.e3=+.

3.h4 c6 4.Nf3 Bg4 5.c3 Bf3 6.ef3 e5 7.d4 ed4 8.Qd4 Be7 9.Bd3 Nbd7 10.0-0 b6 (10...0-0 11.Re1=+) 11.Re1= 0-0 12.a5 c5 13.Qf4 cb4 14.cb4 Rc8 15.Bb2 Bb4?? (better is 15...Re8=) 16.Qb4+- Re8 17.Re8 Qe8 18.Na3 (18.ab6 ab6 19.Bf5 Rc6+-) 18...Nc5 19.Bf6 Nd3 20.Qg4 g6 21.ab6 ab6 22.Qd4 Rc1 (22...Qc6 23.Bh8 f6 24.Qf6 Qf6 25.Bf6 Kf7+-) 23.Rc1 Nc1 24.Qd5 Qe1 25.Kh2 Ne2 (25...Qe8+-) 26.Qd8 1-0. guest2458 - guest403, ICC, 2003.

3.h4 e5 4.b5 Bd6 5.h5 h6 6.Nf3 0-0 7.Ba3 Qe7 8.a5 Bg4 9.d4 e4 10.Ne5 Be6 (10...e3 11.fe3 Nbd7 12.Ng4 Ng4 13.Bd6 cd6 14.Nc3 Qe3 15.Qd3 Qf2 16.Kd2-+) 11.e3 Ba3 (11...a6 12.ba6 Na6 13.c4-/+) 12.Ra3=+ Nbd7 13.a6 b6 14.Nc6 Qd6 15.Rc3 (15.Qd2 Rfe8=) 15...Bg4 (15...Nb8 16.Nd2=+) 16.Be2 Be2 17.Qe2 Rfc8 18.Nd2 (18.f4=) 18...Nh7 (18...Re8!?=) 19.f3 Ng5 20.fe4 Qg3 (20...Ne4 21.Ne4 de4 22.0-0+=) 21.Kf1 Ne4 (21...Nf6!? 22.Ne7 Kf8 23.Nc8 Nge4 24.Ne4 Ne4+-) 22.Ne4 de4 23.Ne7 Kf8 24.Nc8 Rc8 25.Kg1 Nf6 26.Rh3 Qg5 27.Rc6 Nd5 28.Kh2 (28.Qf2 Ne7 29.Re6 Qb5 30.Re4 Qa6+-) 28...Nb4 (28...Kg8 29.Rc4+/-) 29.Rc3+- c5 30.Rc4 Nd5 31.dc5 bc5 32.Re4 Nc3 33.Qg4 Ne4?? (better is 33...Qg4 34.Rg4 Nb5+-) 34.Qc8 (34.Qe4?! Kg8+/-) 34...Ke7 35.Qb7 Kf6 1-0. Trkn - guest546, ICC, 2004.

4.c3 Bf5 5.Qa4 c6 6.Nf3 Bd6 7.e3 0-0 8.b5 (8.d3 e4 9.Nd4 Bd7+=) 8...a6 9.b6 Nbd7 (9...e4 10.Nd4 Bd7 11.Ba3-/+) 10.Ba3 Qe7 (10...c5 11.Qh4-/+) 11.Bd6+= Qd6 12.Qa3 (12.d4 e4 13.Qc2 Bg4+=) 12...c5 (12...Qe6 13.Be2+=) 13.d4 Rfe8 (13...Rae8 14.Be2+=) 14.Be2 Rac8 15.0-0 ed4 16.Nd4 Bg4 17.Bg4 Ng4 18.Nf3 Qh6 19.Qb2 Nde5-/+ 20.Nbd2 Nd3 21.Qa2? c4 22.h3? Ngf2-+ 23.Rf2 Qe3?? 24.Nf1+= Qf4 25.Re2 Re4 26.Qd2 Qf6 27.Re4 de4 28.Nd4 Re8 29.Ra4 Qe5 30.Ne3+/– Qf4 31.Nc4 Qg3?? 32.Nf5 Qg6 33.Ncd6 Rb8 34.Ne7 (34.Ne7 Kh8 35.Ng6 fg6 36.Re4+–) 1–0. dmertz – mabchess (1915), net–chess.com, 2005.

4.c3 Bf5 5.Bb2 c5 6.b5 (6.Nf3 e4 7.Ne5 Bd6-/+) 6...Bd6 7.e3 e4 (7...0-0 8.d3-/+) 8.d4 ed3! 9.Bd3 Bd3 10.Qd3 c4 11.Qe2 (11.Qf5 Nbd7 12.Nf3 Nc5+=) 11...0-0 12.Na3 Ba3 13.Ra3 Ne4 14.Ba1 b6 15.Qa2 Qc7 16.Nh3 Qc5 17.0-0+= Qb5 18.f3 Nd6 19.e4? de4-+ 20.fe4 Ne4 21.ab6 Qb6 22.Kh1 Nd6 23.Ng5 Nc6 24.Qd2 Qc5 25.Bb2 f6?? 26.Ne6= Rfe8?? 27.Nc5+– (27.Nc5 Nf7 28.Ra6+–) 1–0. ifairclough – quikeagle, net–chess.com, 2002.

4.c3 Bf5 5.d4 ed4 6.Qd4 Nc6 7.Qe3 Ne4+=.

4.c3 Bf5 5.Nf3 Bd6-/+.

4.Nd2 e6 5.b5 Bb4 6.Ngf3 0-0 7.Ba3 Ba3 8.Ra3 c6 9.c4 cb5 10.ab5 dc4 11.Nc4 Qd5 12.Qa4 Nbd7 13.Ne3 Qe4 14.Nd2 Nb6?? 15.Ne4+– Na4 16.Nf6 gf6 17.Nf5 ef5 18.Ra4 Rfd8 19.e3 Rd5 20.Bc4 Rd6 21.Ke2 Kg7 22.Rha1 a6 23.ba6 ba6 24.Ra6 Raa6 25.Ra6 Rd7 26.Kf3 Re7 27.Rd6 h5 28.Rd8 Ra7 29.d5 Rc7 30.Be2 Kg6 31.d6 Ra7 32.d7 Kg7 33.h4 Ra4 34.Re8 Rh4 35.d8Q Rg4 36.Rg8 Kh7 37.Rh8 Kg7 38.Bc4! h4 39.Bf7! Kf7 40.Qd5 Ke7 41.Ra8 Rg5 42.Rd8 f4 43.Qd7# 1–0. marre (2010) – kool88, GameColony.com, 2003.

4.e3 e6 5.Ba3 Bd6 6.Bd3=+.

4.Bb2 e6 5.b5 Bd6 6.c4=+.

4.d4 c6 5.Bd2 Qc7 6.e3 e5 7.c4 e4 8.Ng1 Be7 9.Qc2 0-0 10.a5 a6 11.cd5 Nd5 12.Qe4 N7f6 13.Qc2 Nb4 14.Qb2 Nbd5 15.Bd3 Bd6 16.Nc3 Nb4 17.Bb1 Bg4 18.Ne4 Ne4=+ 19.Bb4 Qe7 20.Bd6= Nd6 21.Bd3 Bf5 22.Bf5+= Nf5 23.Nf3 Rad8 24.0-0 Qf6? 25.Qb7+– Ra8 26.Rfc1 Rab8? 27.Qc6 Qe7 28.Qa6 Rb2 29.Qc8 Re2 30.Qf5 (30...Rb2 31.a6+–) 1–0. b4_player (2105) – sousse (1940), GameColony.com, 2002.

4.d4 e6 5.b5 Bd6 6.Ba3= 0-0 7.Bd6 cd6 8.e3 e5 9.a5 e4 10.Nfd2 b6 11.ab6 Nb6 12.Be2 Be6 13.0-0 Qd7 14.Ra6+= Rfc8 15.Na3 Rc3 16.Ndb1 Rc7 17.f3 Qc8 18.Nd2 Rc3 19.fe4+= Ne4 20.Bd3 f5 21.Nab1 Rc7+= 22.Rf4 Rf7 23.Na3 g5 24.Rf1+/– Qf8 25.Kh1 Qh6 26.Qe1+/– g4 27.Rf4 g3 28.h3 Nf2 29.Kg1 Rg7 30.Qe2 Nh3? 31.gh3+– Qh3 32.Nf3 g2 33.Rh4 Qg3 34.Rh2 f4 35.Bh7 (35...Rh7 36.Rg2+–) 1–0. NN – NN, 2002.

4.Ba3 Nc6 5.b5 Ba3 6.Ra3 Ne7 7.d4 0-0 8.e3 a6 9.Bd3 ab5 10.ab5 Ra3 11.Na3 Qd6 12.Nb1 Bd7 13.0-0 Ne4 14.c4 Qb4 15.Qd2?? Nd2-+ 16.Nbd2 dc4 17.Rb1 Qd6 18.Nc4 Qd5 19.e4 Qh5 20.Nce5 Bc8 21.g4 Qh6 22.g5 Qh5 23.b6 c6 24.Be2 f6 25.gf6 Rf6 26.Rb3 Ng6 27.Re3 Ne5 28.de5 Rg6 29.Kf1 Qh3 30.Ke1 Qg2 31.Rd3 Qh1 32.Kd2 Rg1 33.Rd8 Kf7 34.Ng1 Qg1 35.Rc8 Qh2 36.Rc7 Kg6 37.Ke3 Qe5 38.Rb7 Qc5 39.Kf3 h5 40.Bd3 h4 41.Bf1 Qc3 42.Kg2 h3 43.Kh2 Kg5 44.Bh3 Kf4 45.Rf7= Ke4 46.Bg2 (46...Ke5 47.b7=). Trkn – WilliamOfHippo, ICC, 2004.

4.Ba3 Bd6 5.d4 Nbd7 6.b5 Ne4 7.e3 0-0 8.Bd3 f5 9.Bd6 cd6 10.a5 Qc7 11.0-0 b6 12.Qe2 ba5 13.Qe1 Nb6 14.Qa5 Bb7 15.Nfd2 Rfc8 16.f3 Nf6 17.Na3 Qc3 18.Nac4 Rc4? 19.Nc4+– Qa5 20.Na5 Rb8 21.Ra3 g6 22.Rfa1 Nbd7 23.Nc6 Bc6 24.bc6 Nb6 25.Ra7 (25...Re8 26.c7+–) 1–0. marekt (2435) – starfire_1 (1965), ChessWorld.net, 2003.

4.b5 a6 5.Ba3 Ba3 6.Ra3 ab5 7.ab5 Ra3 8.Na3 Qd6 9.Qa1 0-0 10.e3= b6 11.Be2 Bb7 12.d4 Nbd7 13.Qb2 Ra8 14.Nb1 Ne4 15.0-0 f6 16.Nbd2 Nd2 17.Nd2 e5 18.c4 ed4 19.ed4+= dc4 20.Bc4 Kh8 21.Re1 Bd5 22.Qb3 Bc4 23.Qc4 Nf8 24.Nf3 Ng6 25.Qf7 Nf8?? 26.Re7+– Ra1 27.Ne1 Re1 28.Re1 Qb4 29.Qe7 (29...Qd6 30.Qd6 cd6 31.Re7+–) 1–0. kamret (2165) – LIKOS (2035), GameColony.com, 2003.

4.b5 c5 5.Bb2=+.

4.c3 Bd6 5.d3 (5.d4 Nbd7+=) 5...0-0 6.Bg5 (6.Nbd2+=) 6...Qd7 (6...h6 7.Bh4+=) 7.e4 (7.Bf6!? gf6 8.e3=) 7...de4+= 8.Bf6 (8.Bf6 ef3 9.Bg5 fg2 10.Bg2-/+; 8.Nfd2!? ed3 9.Bf6 gf6 10.Qg4 Kh8 11.Bd3-/+). juancabeta – Wildwild, internet, 2007.

4.c3 Nbd7 5.Nh4 Bb1 6.Rb1 e5 7.Qc2 Ne4 8.Nf3 f5 9.d3 Nd6 10.c4 d4 11.c5 Nf7 12.c6 bc6 13.Qc6 Bd6 14.Ng5 Ng5 15.Bg5 Qc8 16.b5 0-0 17.g3 Rb8 18.Bg2 a6? 19.Bd5+– Kh8 20.Be6 ab5 21.Bd7 Qb7 22.Qb7 Rb7 23.ab5 Rfb8 24.Bd2 Ra8 (24...h5 25.h3+–) 1–0. orane (2195) – ipermodern (1915), Caissa.com, 2004.

4.c3 e6 5.Nd4 Bg6 6.d3 c5 7.bc5 Bc5 8.Qb3 Bd4 9.cd4 Qc7 10.Nc3= 0-0 11.Bg5 Nbd7 12.Rc1 Qb6 13.Qb6+= ab6 14.Bf6 Nf6 15.e3 Rfc8 16.Kd2 Ne8 17.Be2 f5 18.Rb1 Ra6 19.Rhc1 Nd6 20.Rb4 Be8 21.Rcb1 b5 22.ab5 Ra3 23.R4b3 Rb3 24.Rb3 Ra8 25.b6 Ra1 26.h3 Bc6 27.f4 Rg1 28.Bf3+/– Ra1 29.g4 g6 30.g5 Kg7 31.Rb2 h6 32.gh6 Kh6 33.h4 Ra6 34.Rc2 Ra3 35.Ne2+= Nc8?? 36.Rc6!+– bc6 37.b7 Ra2 38.Kc1 (38...Ne7 39.b8Q+–) 1–0. guest2442 – guest718, ICC, 2003.

4.c3 e6 5.Nh4 Bg4=+.

4.c3 e6 5.Nh4 Bg6 6.Ng6 hg6 7.e3 c5 8.bc5 Bc5 9.Ba3 Qd6 10.Qb3 Nc6 11.Qb7 0-0 12.Bb5 Na5 13.Qa6 Qa6 14.Ba6 Ba3 15.Na3+/– Nb3 16.Rb1 Nc5 17.Bb5 a6 18.Bc6 Rab8 19.Ke2+/– Rfc8 20.Rb8 Rb8 21.Rb1 (21...Rb1 22.Nb1+/–). guest2009 – guest2196, ICC, 2003.

4.e3 e6 5.Ba3 Nbd7 6.Be2 Bd6 7.b5 Qe7 8.a5 h6 9.Nd4 Bh7 10.a6 Ne4 11.ab7 Rb8 12.Bd6 Qd6 13.Ra7 Qb6 14.Nc6 Rb7 15.Ra6 Qc5 16.Ra8 Nb8 17.Nb8 0-0 18.Nd7 (18...Ra8 19.Nc5 Nc5 20.Nc3+–) 1–0. marekt – Immortale_SdM, ChessWorld.net, 2003.

4.Ba3=+.

4.Bb2 Nbd7 5.b5 Bf3 6.ef3 e5 7.Be2 Bd6 8.0-0 0-0 9.Re1 c5 10.a5 d4 11.a6 b6 12.Bc4 Qc7 13.Re2 Rae8 14.h3 e4 15.fe4 Ne4 16.c3 Ne5 17.d3 Nc4 18.dc4 dc3 19.Nc3= Nc3 20.Bc3 Bf4 21.Re8 Re8 22.Qg4 Be5 23.Re1 f6 24.Be5 Re5 25.Re5 Qe5?? 26.Qd7+– h6?? 27.Qa7 Qe1 28.Kh2 Qe5 29.g3 Qe2 30.Qa8 Kh7 31.a7 (31...f5 32.Qg2+–) 1–0. market (2165) – sousse (1950), GameColony.com, 2002.

4.c3=+.

4.d4 Bg7 5.e3 Bg4 6.h3 Bd7 7.Bd3 e6 8.0-0 Qe7 9.Ba3 c6 10.b5 Qd8 11.Nbd2 cb5 12.ab5 a6 13.c4 a5 14.Qa4 b6 15.e4 Ne4 16.Be4 de4 17.Ne4 Na6 18.Nd6 (18...Kf8 19.Nb7 Kg8 20.Nd8 Rd8 21.Bd6+–) 1–0. Trkn – guest2473, ICC, 2004.

4.d4 Bg7 5.Bf4 0-0 6.e3 Ne4 7.c4 c5 8.bc5 Nc5 9.cd5 Qd5 10.Nbd2 Ne6 11.Bc4 Qa5 12.Be5 f6 13.Qb3 fe5 14.Be6 Kh8 15.Bc8 Rc8 16.Ng5 Bf6 17.Nf7 Kg7 18.Ne5 Be5 19.Qb7?? Rc2?? 20.Rd1 Bd6 21.Qa8 Bb4 22.0-0 Rd2 23.Rd2 Bd2 24.Qb8 Bb4 25.Qb5 Kf7 26.Rb1 Qb5 27.ab5 (27...Ba5 28.f4+–) 1–0. kamret (2215) – turborago (1945), GameColony.com, 2003.

4.d4 Bg7 5.Bf4 0-0 6.e3 Re8 7.c4 c6 8.Nc3 Nbd7 9.cd5 Nd5 10.Nd5 cd5 11.Rc1 b6 12.Bc7 1–0. kamret (2175) – geordy (1810), GameColony.com, 2003.

3.Bb2 Bb4 4.Be5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.a4).

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.a4 Nf6).

3.Bb2 e4 4.b5 Bc5 5.d4 Be7 6.Nc3 c6 7.d5 cd5 8.Nd5 Nd5 9.Qd5 0-0 10.0-0-0 Bf6 11.Qe4 Bb2 12.Kb2 Qf6 13.Qd4+/– Qd4 14.Rd4+– a6 15.e4 ab5 16.ab5 Ra5 17.Nf3 g6 18.Bc4 Kg7 19.Rd6 Ra4 20.Kb3 Ra5 21.Kb4 Ra7 22.Re1 b6 23.Rb6 Bb7 24.Ne5 f6 25.Nd3 d5 26.ed5 Nd7 27.Re7 Kh6 28.Rd7 1–0. mtr – tabanofob, internet, 2009.

3.b5 a6 4.Bb2 ab5 5.ab5 Ra1 6.Ba1 d6 7.e3 Bf5 8.Nf3 Be7 9.c4 0-0 10.Nc3 Bg4 11.Be2 e4 12.Nd4 Be2 13.Nce2 d5 14.cd5 Qd5 (< 14...Nd5 15.Qb1+=) 15.0-0 Nfd7 16.Nf4 Qc5 17.Qb1 f5? (better is 17...Nf6!?=) 18.Rc1 Qb6 19.Nde6 Re8?? (better is 19...Rf7 20.Rc7 Nf8+–) 20.Qb3 Kh8 21.Nc7 Rg8+– 22.Qf7 Bf6 23.Bf6 Nf6 24.Nce6 Nbd7?? 25.h3 Qb5?? 26.Rc8!! Ne8 27.Re8 Nf6 28.Rg8 Ng8 29.Qg7# 1–0. azme – szymnett, kurnik, 2011.

3.b5 Bb4 4.c3 Ba5 5.Ba3 d6 6.Nf3 0-0 7.e3 c6 8.Be2 cb5 9.Bb5 a6 10.Bc4 Re8 11.0-0 Nc6 12.d4 ed4 13.cd4 Be6 14.Be6 Re6 15.Nbd2 d5 16.e4 Ne4 17.Ne4 de4 18.Ne5 Ne5 19.de5 Qd1 20.Rad1 Re5 21.Rd7 b5 22.ab5 ab5 23.Rb7 f5 24.Rd1 Rc8 25.h3 Bc3 26.Rdd7 Re6 27.Rb5 g6 28.Rbb7 Be5 29.g3 Ra6 30.Bd6 Rd6 31.Re7 Rd1 32.Kg2 Bf6 33.Rh7 Rd2 34.Rhf7 Bc3 35.h4 e3 36.Kf3 e2 37.Rfe7 Kf8 38.Ke3 Re8 39.Re8 Ke8 40.Kf3 e1Q 41.Rb8 Kf7 42.Rb7 Kg8 43.Rb8 Kh7 44.Rb7 Kh6 45.Rb8 Qf2# 0–1. ronnieg (2545) – Bertok (2640), TIO_61 (fics, Fremont, California USA) (5), 2001.

3.b5 d6 4.h3 (4.Nf3 a6 5.Bb2 Be7=+) 4...Bf5 (4...d5 5.Nf3 Bd6 6.Ba3-/+) 5.g4 Be4 6.f3 (6.Rh2 a6 7.d3 Bg6=+) 6...Bd5 (6...Nfd7 7.d3 Qh4 8.Kd2=+) 7.e4=+ Ne4 (better 7...Be6!?=+) 8.fe4+= Qh4 9.Ke2 Be4 10.Rh2?? (better 10.Nf3 Qg3 11.Ra3+=) 10...Qg3-+ 11.Rf2 Qg1 12.d3 (12.Nc3 Bg6 13.d3 Qg3-+) 12...Bg6 (12...Bh1 13.Bg2 Qd1 14.Kd1 Bg2 15.Rg2-+) 13.Bg2 (13.Nc3 c6-+) 13...Qd1 14.Kd1 c6 15.h4 (15.Re2 a6 16.bc6 bc6-+) 15...h6 (15...h5!? 16.g5-+) 16.h5-/+ Bh7 17.a5 a6 (17...cb5? 18.Bb7 d5 19.Re2+-) 18.b6 (18.bc6!? bc6 19.Nc3-/+) 18...Be7 19.Be4 (19.Nc3 Nd7-+) 19...Be4 20.de4 Nd7 21.Be3 (21.Nd2-+) 21...Nf6 22.Rg2 White prepares g5 22...Ne4 23.Ra4 (23.Bc1 Rd8-+) 23...d5 24.Nd2 (24.Ke1-+) 24...Nc3 25.Kc1 (25.Ke1 Na4 26.Nf3 e4-+) 25...Na4 26.g5 (26.Nb3 Nc3-+) 26...Nc3 (26...hg5 27.Bg5 Rh5 28.Be3-+) 27.Nb3 (27.Nb1 Ne4 28.gh6 gh6-+) 27...d4 28.Bd2 Ba3 0-1. hamiltonharris (1830) - doyabestson (1850), ChessWorld.net, 2015.

3.b5 Bd6 4.Ba3 Ba3 5.Na3 0-0 6.e3 a6 7.Nc4 ab5 8.ab5 b6 9.Ra8 c5 10.Rb8 Qc7 11.Rb6 Nd5 12.Ra6 Ba6 13.ba6 Ra8 14.Qa1 f6 15.c3 h6 16.Bd3 Nb6 17.Qa2 Kf8 18.Nh3 Nc4 19.Bc4 d6 20.Bd5 Ra7 21.0-0 Qb6 22.f4 Ra6 23.Qb1 Qc7 Black resigned 1-0. DaTruth123 (1700) – ganapathyraman, ChessWorld.net, 2008.

3.b5 Be7 4.Bb2 0-0 (4...e4 5.e3=+) 5.Be5 Re8 6.Bf6 (better 6.Nf3!?=+) 6...Bf6-/+ (worse 6...gf6 7.Nf3+=) 7.Nc3 (7.c3 a6 8.e3 d5-/+) 7...d5-+ 8.d4 (8.Nf3 d4 9.Na2 Nd7-+) 8...c5! 9.e3?? (9.dc5 Bc3 Pinning (9...Bc3 Deflection; 9...Bc3 Decoy)) 9...cd4 10.Nce2 (10.Bd3 dc3 11.Ne2 Nd7-+) 10...de3 11.fe3 Ba1 (better 11...Re3!? 12.Nf3 Qb6 13.Kd2-+) 12.Qa1 Nd7 13.Nf3 Nf6 14.Nf4 (14.Ned4 Qa5 15.Kf2 Ng4 16.Kg1 Ne3-+) 14...Ng4 (14...Re3 15.Be2 Qb6 16.Rf1-+) 15.h3 (15.Bd3 Ne3 16.Kf2 Ng4 17.Kf1 Bf5-+) 15...Ne3 (15...Qa5 16.c3 Ne3 17.Kf2-+) 16.Kf2 Qb6 (16...Qc7 17.g3 Nc2 18.Qa2-+) 17.Kg3 (17.Qd4 Bf5 18.Bd3 Bd3 19.cd3 Qc7-+) 17...Nc2 (17...Re4 18.Nd3-+) 18.Qb2 (18.Qc3 Bf5 19.Bd3 Rac8-+) 18...Ne3 (better 18...Bf5 19.Nh4 Re3 20.Kh2 Be4-+) 19.Nh5 (19.Bd3 Bf5 20.Bf5 Nf5 21.Kh2 Re4-+) 19...Nf5 (better 19...Qd6 20.Nf4 Re4-+) 20.Kf4 (20.Kh2 Re3 21.Qf2-+) 20...Qc7 (20...Re4 21.Kg5 h6) 21.Kg5 Qd6 (21...h6 22.Kg4 Ne7 23.Kh4 Ng6) 22.Nh4 (22.Qe5 Re5 23.Kg4 Re4 24.Nf4 Qf4 25.Kh5 Qh6) 22...Qh6 23.Kg4 Ne3 (23...Re4 24.Kf3 Qe3) 24.Kf3 Qh5 25.g4 Qh4 (25...Qh4 26.Rh2 Bg4 27.hg4 Qg4 28.Kf2 Nd1) 0-1. winstonsmithamm (1930) - Lance5500 (2585), lichess.org, 2016.

3.c3 a5 4.b5 d5 5.d4 e4 6.Bg5=+.

3.c3 e4 4.d3 d5 5.Bg5 h6 6.Bf4 a5 7.b5 Bd6 8.Bd6 Qd6 9.e3 0-0 10.Nd2 Nbd7 11.Qc2 Ne5 12.d4 Ng6 13.Ne2 c6 14.c4 Bg4 15.h3 Bd7 16.Rc1 Rfd8 17.Nc3 Nh5 18.Qd1 Nf6 19.Be2 Qe6 20.Bg4 Ng4= 21.Qg4 Qg4 22.hg4 Bg4 23.f3 ef3 24.gf3 Be6 25.c5 Bf5 26.Ke2 Ne7 27.Ra1 Kh7 28.Rh2 Bg6 29.Nb3 f6 30.Nd2 Nf5 31.Kf2 Re8 32.Nf1 Re7 33.Ne2 Kg8 34.Ra3 Rd8 35.Rb3 Rde8 36.Nf4 Bf7 37.Ne2 g5 38.Neg3= Nh4 39.bc6 bc6 40.Rb6 Re6 41.Ne2 h5 42.Rh4 gh4 43.Nf4 R6e7 44.Kg2 Rc7=+ 45.Kh3 Ree7 46.Kh4 Be8 47.Nd3 Rb7-/+ 48.Ng3 Rb6 49.cb6 Rb7 50.Nh5 Bh5 51.Kh5 Kf7 52.Nc5 Rb6 53.Kg4 Ke7 54.f4 Rb1 55.Kg3 f5 56.Kh4 Re1 57.Kg5 Re3 58.Kf5 Re2 59.Kg5 Rd2 60.Nb3 Rg2 61.Kh4 Rb2 62.Na5 Kd7 63.f5 Rb4 64.f6 Rd4 65.Kg5 Ra4 66.f7 Ke7 67.f8Q Kf8 68.Nc6 Ke8 69.Kf5 Re4 0–1. pierre – jarek59, internet, 2007.

3.d3 Bb4!? 4.c3 Be7-+.

3.d3 Ke7 4.c4 Ke8 5.Bg5 (5.Bd2 d5 6.cd5 Nd5=+) 5...d6 (better 5...Bb4!? 6.Bd2 Nc6-/+) 6.Bf6 Qf6 7.c5? (better 7.Nc3!?=+) 7...e4 8.cd6?? (better 8.Nd2 ed3 9.ed3 dc5 10.b5-/+) 8...Qa1-+ 9.Nd2 Qd1 10.Kd1 ed3 (10...Bd6 11.b5-+) 11.ed3 (11.dc7 Na6 12.b5 de2 13.Ne2 Nc7-+) 11...Bd6 12.Be2 (12.b5 a6-+) 12...Bb4 13.Bf3 (13.Kc1 Bd7-+) 13...Bd7 (13...Nd7 14.Kc2 Nb6 15.Ne2 Na4 16.Re1-+) 14.Nc4 (14.Bb7 Ba4 15.Kc1-+) 14...Ba4 15.Ke2 Bc6 16.Nb2 (16.Ne5 Bf3 17.Ngf3 f6-+) 16...Bf3 (16...Kd7 17.Nc4 Re8 18.Ne3-+) 17.Kf3 (17.Nf3 a5-+) 17...Be7 (17...a5 18.Ne2-+) 18.d4 Nc6 19.Ke2 (19.Ne2 a5-+) 19...Nd4 20.Kd3 Ne6 21.Kd2 Rd8 22.Kc2 Rd7 (22...Nd4 23.Kb1-+) 23.Nf3 Bf6 24.Rc1 (24.Rb1 Ke7-+) 24...Nd4 25.Nd4 Bd4 26.Kb1 (26.Nd3 Ke7-+) 26...Bf6 (26...Bf2 27.Nc4-+) 27.Rd1 (27.Kc2 Kd8 28.Nd3 Re8-+) 27...Kd8 28.Rd7 Kd7 29.Nd3 Re8 30.g4 Re2 31.Nf4 (31.Kc1 Bd4-+) 31...Rd2 (31...Rf2 32.Nd3 Rh2 33.Nc5 Kd6 34.Nb7 Kd5 35.g5 Bg5 36.Na5-+) 32.Kc1 (32.Nh3 b5 33.Kc1 Bc3-+) 32...Rf2 33.Nh3 Rf1 (33...Rh2 34.Nf4 Bg5 35.Kd1 Bf4 36.Ke1 c5 37.g5 c4 38.g6 c3 39.gf7 c2 40.f8N Kd6 41.Nh7 c1Q) 34.Kd2 Rf3 35.Ke2 Rh3 36.g5 Rh2 37.Kf3 Bg5 38.Kg4 Bf6 39.Kg3 Be5 (39...Be5 40.Kf3 f5-+) 0-1. vlt (2075) - opperwezen (2445), lichess.org, 2019. (=1.a4 Nf6 2.b4 e5)

3.e4 Bb4 4.Nf3 d6 (4...Ne4 5.Qe2 d5 6.Ne5-+) 5.c3-/+ Bc5 (5...Ba5 6.Qc2 Nc6-/+) 6.Bc4? (6.d4 ed4 7.cd4 Bb4 8.Bd2 a5 9.Bb5 Bd7-/+) 6...0-0 (6...Ne4 7.0-0 d5 8.Qe1-+) 7.0-0 (7.d4 ed4 8.cd4 Bb4 9.Bd2 Bd2 10.Nbd2 Ne4 11.Ne4-/+) 7...a6 (better 7...Ne4!? 8.d3 Nf6-+) 8.d4=+ ed4 9.cd4 Ba7 10.Nc3 Bg4 11.Be3 Nc6 12.Rb1 Bf3 13.gf3 Nh5 (13...Na5 14.Ba2=+) 14.Kh1 Rb8 15.Rg1 g6 16.f4 Qf6?? The pressure on d4 grows (better 16...Kh8=) 17.Qh5+- Bd4 18.Nd5 Qg7 (18...Qe6 19.e5 Kh8 20.Qh4+-) 19.Qh3 Rfc8 (19...Rfe8 20.Qd7 Be3 21.fe3+-) 20.Rgc1 (20.Rb7 Be3 21.Rb8 Rb8 22.Qe3 Qb2+-) 20...Be3 (20...Bb2 21.Rd1 Kh8 22.e5+-) 21.Qe3 (better 21.fe3!? Kh8 22.Rb7 Na5 23.Rb8 Rb8 24.Ba6 c6+-) 21...Kh8 22.Be2 Nd4? (better 22...Qd4+-) 23.Rc7 (23.Ne7!? Re8 24.Rc7 b5 25.ab5 ab5+-) 23...Rc7 24.Nc7 Rc8 (24...Ne2 25.Qe2 f5 26.Ne6+-) 25.Rb7 Ne6 (25...Ne2 26.Qe2 f5+-) 26.Ne6 Qa1 27.Kg2 fe6 (27...Kg8 28.Qb3 Qf6 29.Rb8 Qe6 30.Qe6 Rb8 31.Qd6+-) 28.Qa7 (better 28.Qh3!? Qg7 29.Rg7 Kg7 30.Qe6 Rf8+-) 28...Qf6 29.Rh7 (better 29.Rf7 Qh4 30.Qd4 e5 31.Qd6 Re8+-) 29...Kg8 30.Rc7 (30.Ba6 Rd8+-) 30...Rf8 (30...Rc7 31.Qc7 Qf4 32.f3+-) 31.Bf3 (31.Bc4 Rf7 32.Rf7 Qf7 33.Qb8 Qf8 34.Be6 Kg7 35.Qf8 Kf8+-) 31...g5 (31...Rd8 32.Bg4 Re8 33.Qa6+-) 32.f5 (32.Bg4 Rf7 33.Rf7 Qf7 34.Qf7 Kf7 35.fg5 e5+-) 32...g4 (32...a5 33.Re7 ef5 34.e5+-) 33.Bg4 Qg5 34.h3 ef5 35.ef5 Rf5 (35...Kh8 36.Qa6 Rd8 37.Qb6+-) 36.Qa8 (better 36.Kf1 Rf7 37.Rf7 Qg6 38.Rb7 Qd3 39.Kg1 Qb1 40.Rb1 d5 41.Rb8) 36...Rf8 37.Rc8 Rc8 38.Qc8 Kg7 39.Qa6 Kf6 (39...Qd5 40.Kg3+-) 40.Qe2 (better 40.Qd6 Kf7+-) 40...Qd5 41.Qf3 (41.Qf3 Ke5 42.a5 Qf3 43.Bf3+-) 1-0. AmaraMaple (2410) - MATAGORDO (2405), Rated Bullet game, lichess.org, 2020. (=1.a4 A00: Irregular Openings 1...e5 2.b4 Nf6)

3.e4 Ne4 4.Bd3? (4.Qe2 d5-/+) 4...Nf6 (better 4...Nf2 5.Kf2 Qh4 6.Kf1-+) 5.Nf3? (5.Qe2 Bb4 6.Qe5 Be7-/+) 5...d6 (better 5...e4 6.Be4 Ne4-+) 6.Nc3-/+ Be7 7.Bb2 0-0 8.Qe2 (8.b5 Nbd7-/+) 8...Nc6 (better 8...Bg4-+) 9.0-0-0? (better 9.b5 Nb4 10.0-0-/+) 9...Nb4-+ 10.a5 (10.Rde1 Nd3 11.Qd3 Re8-+) 10...Nd3 11.Qd3 Be6 (11...c6 12.Qe2-+) 12.a6 (12.Ng5 c6-+) 12...ba6 13.Qa6 c5 14.Nb5 (14.Rde1 Qc7-+) 14...Bc4 (14...Qd7 15.Nc3-+) 15.d3 Bb5 16.Qb5 Rb8 17.Qa6 Qc7 (better 17...Ng4 18.Rhf1 Bg5 19.Kb1 Bf6-+) 18.Kd2 (18.Bc3 Rfe8-+) 18...Rb6 (18...Rb2 19.Rb1 c4 20.dc4 Ne4 21.Ke3-+) 19.Qa4 (19.Qa2-+) 19...Rb2 20.Qh4 (20.Ra1 Ra8-+) 20...h6 (better 20...Qa5 21.Ke2 Nd5 22.Ng5-+) 21.Qh3 (21.Qa4 d5 22.Ke1 Rfb8-+) 21...e4 22.de4 Ne4 23.Ke2 (23.Ke1 Qa5 24.Kf1 Qb5 25.Rd3 Bg5-+) 23...Rc2 24.Rd2 Nd2 25.Nd2 Bg5 26.Rd1 Re8 27.Kd3 Ra2 28.g3 Qa5 (28...Qc6 29.Qe6 Re6 30.Kc4 Qa6 31.Kc3 Bf6 32.Kb3 Rb2) 29.f4 (29.Rb1 Rd2 30.Kc4 d5 31.Kb3 Rb8) 29...Qa3 (29...Qb5 30.Nc4 Qb3) 30.Kc4 Rc2 (30...Qb4 31.Kd5 Ra6 32.fg5 Re5) 31.Kd5 Qd3 32.Kc6 Bf6 (32...Qa6 33.Kd5 Re5 34.fe5 Qb7 35.Kd6 Be7) 33.Qd7-+ Rd8 34.Qa7 Rd2 (better 34...Qe2 35.Nb3 Qe8 36.Kb7 Rd7 37.Kb6 Bd8 38.Qc7 Bc7 39.Kc6 Re7 40.Kb7 Bd8 41.Ka6 Qc6) 35.Rb1 Qe4 36.Kb5 c4 (36...Qb1 37.Kc6 Rc8 38.Qc7 Qe4 39.Kb5 Rb2 40.Ka6 Ra8 41.Qa7 Qa4) 37.Rb4 (37.Qc7 Qb1 38.Kc6 Qh1 39.Kb5 Rb2 40.Ka6 Ra8 41.Qa7 Qa1) 37...Qd5 38.Ka4 (38.Kb6 Qc5 39.Kb7 Rd7 40.Kb8 Qa7 41.Kc8 Rc7) 38…Ra2 0-1. Murenish (1705) - SypherV (2060), Rated Blitz game, lichess.org, 2014. (=1.a4 Nf6 2.b4 e5)

4.e3 Bd6 5.b5 c5 6.c4 (6.d4 Nbd7-/+) 6...d4 7.Qc2 e4 8.Bc1 (8.ed4!? cd4 9.Bd6 Qd6 10.c5-/+) 8...d3-+ 9.Qc3 Qc7 10.g3? (better is 10.Bb2-+) 10...Be5 11.Qa3 Ba1 12.Qa1 Be6 13.Bb2 Nbd7 14.f4? Bc4 15.Bh3 Be6 16.Be6 fe6 17.Bf6 Nf6 18.Nh3 0-0 19.0-0 Qd6 20.Nc3 a6 21.Ng5 ab5 22.Nb5 Qc6 23.Ne6?? Qe6 24.Nc7 Qh3 25.Rf2 Rac8 26.Ne6 Qe6 0–1. Childress,Steven – Lilja,Gunnar, IECC, 1999.

4.c4 Ng4 5.e3= d6 6.f3 (6.Nc3!?=) 6...Nh6 7.d4 (better 7.Nc3!? Be6 8.Nge2=+) 7...ed4-+ 8.ed4 Qe7?? (8...Qh4 9.g3 Qd4 10.Qd4 Bd4 11.Ra3-+) 9.Be2?? (better 9.Ne2 Bb4 10.Kf2+=) 9...0-0?? (better 9...Qh4 10.g3 Qd4 11.Qd4 Bd4-+) 10.dc5+- dc5 (10...Qf6 11.Ra2 dc5+-) 11.Bb2?? (11.Nc3 c6+-) 11...Rd8? (better 11...Nf5!? 12.Qd2 Qh4 13.Kf1 Re8+/-) 12.Qc1+- Nf5 13.Qc3 (13.Qf4 Ne3 14.Kf2 Nd1 15.Bd1 Rd1+-) 13...Nd4 (13...Nd7 14.Nd2+/-) 14.Nd2 Bf5 (14...Nd7 15.Nb3 Nf8 16.Nd4 cd4 17.Qa3+-) 15.g4 (15.Nb3 f6 16.Rd1 Bc2 17.Rd4 cd4 18.Nd4 Bg6+-) 15...Bg6 (better 15...Bc2 16.Kf2 Nd7+/-) 16.Rc1?? (better 16.Nb3 f6 17.Rd1+- (worse 17.Nd4 cd4 18.Qa3 Qe5+-)) 16...Ne2?? (16...f5 17.h4 Re8+=) 17.Qg7 (17.Ne2?! f6 18.g5 Re8+/-) 1-0. Paul593 – aussietom, ChessWorld.net, 2009.

4.e3 0-0 5.Nf3 d6 6.d4 ed4 7.ed4 Re8 8.Be2 Bb4 9.c3 Ba5 10.Na3?? (better 10.0-0=) 10...Bc3-+ 11.Bd2 Ba1 12.Qa1 Bf5 13.Be3 Nbd7 14.0-0 Ne4 15.a5 Qf6 16.Qc1 Rac8 17.Nc4 d5 (17...c6 18.bc6 Rc6 19.Qb2-+) 18.Nce5 Ne5 19.de5 Qe6 20.Ba7 b6 21.ab6 cb6 22.Qe3 Nc5 (better 22...Nc3 23.Bd1 Nb5 24.Qb6 Na7 25.Qa7 Be4-+) 23.Ng5? (better 23.Nd4 Qe5 24.Qe5 Re5 25.Bb6-/+) 23...Qe5 24.Bb6 Qe3 (better 24...Qf6 25.Bc5 Re3 26.Be3 d4-+) 25.Nf7?? (better 25.fe3 Re3 26.Bh5-+) 25...Qe2 26.Nd6 Bd3 (26...Qf1 27.Kf1 Bd3 28.Kg1 Re1) 27.h3 Qf1 28.Kh2 Re2 (28...Qf2 29.Nf5 Re2 30.Ne3 Qf4 31.Kg1 Re1 32.Nf1 Rf1) 29.Nc8 (29.Bc7 Qf2 30.Nc8 Qg2) 29...Rf2 (29...Qf2 30.Ne7 Kf7 31.Bc5 Qg2) 30.Bc5 (30.Ne7 Kf7 31.Kg3 Rg2 32.Kh4 Qf4 33.Kh5 Rg5) 30…Qg2 (30...Rg2?!=) 0-1. peteywheatstraw – ivanchess, gameknot.com, 2015.

4.e3 a5 5.Be2 (5.d4 ed4 6.ed4 Be7=) 5...d5 6.c3 (6.Nf3 Bd6=) 6...0-0 (6...Nbd7 7.d4 Bd6 8.Ba3=) 7.d3 (7.d4 ed4 8.cd4 Ne4=) 7...d4 (7...Re8 8.Nf3=+) 8.c4 (8.Nf3 Re8=+) 8...de3 9.fe3 (9.Be3 Bb4 10.Nd2 Bf5-/+) 9...Nbd7 (better is 9...Re8-/+) 10.Nf3? (10.Nh3 Bb4 11.Bd2 Bd2 12.Nd2 Nc5=) 10...e4 (better is 10...Ng4-+) 11.de4=+ Ne4 12.0-0 Qf6 13.Bd3? Re8 14.Ra2 Ng5 15.Kh1 b6?? 16.Re2?? Bb7 17.e4 Nf3=+ 18.Rf3 Qh4 19.Rh3 Qg4 20.e5?? Qh3 21.Be4-+ Be4 22.Re4 Qf5 23.Re1 Rad8 24.Bb2 Ne5 25.Qe2 Bd4 26.Bd4 Rd4 27.Nc3 h6 28.Nd5 Re6 29.Nc7 Red6 30.h3 f6 31.Nd5 Rc4 32.Ne7+– (32.Ne7 Kf8 33.Nf5+–) 1–0. rla – donny38, internet, 2007.

4.Ba3 Ba3 5.Na3 0-0 6.e3 e4 (better 6...c5-/+) 7.Nf3?? (better 7.d4=+) 7...ef3-+ 8.Qf3 Bg4 9.Qg3 Nbd7 10.Bd3 Bh5 (10...Nc5 11.0-0-+) 11.h3 (11.Bf5 Nc5-+) 11...c5 (11...Nc5 12.Nb1-+) 12.Be2 (12.bc6 bc6 13.Qd6 Rc8-+) 12...c4 (12...Be2!? 13.Ke2 Qa5 14.d3-+) 13.Bh5 Nh5 14.Qg4 Nhf6 15.Qd4 Re8 16.Qc3 (16.0-0 Qa5-+) 16...Re4 (16...Ne4!? 17.Qd4 Nf8 18.Nb1-+) 17.0-0 Qe7 (17...Rh4 18.f4-+) 18.f3 (18.a5 Rc8-+) 18...Rh4 19.Qd3 0-1. BitChess (2385) - Nehiel (2465), Rated Bullet game, lichess.org, 2016.

4.Ba3 Bd6 5.Bd6 Qd6 6.f3 (6.Nf3!?-/+) 6...0-0-+ 7.e4 (7.e3 Nbd7-+) 7...de4 8.fe4 Ne4 9.Qf3 Nf6 (9...Nc5 10.Nc3 Nbd7 11.Nh3-+) 10.Ne2 (10.Qa3 Qb6-+) 10...e4 (10...Nbd7!? 11.Nbc3 Rd8 12.Ng3-+) 11.Qa3 (11.Qf4 Qe7 12.Nbc3 a6-+) 11...Qe5 12.Qc3 Qf5 (12...Qe7 13.Ng3-+) 13.g3? (better 13.Ng3!? Qf4 14.Qe3 Qe3 15.de3-/+) 13...Nbd7 (13...Ng4 14.h3 Qf2 15.Kd1-+) 14.Nd4 (14.Bg2 Re8 15.Nd4 Qd5-+) 14...Qh5 (14...Qg5 15.Qe3 Qe5 16.Nb3-+) 15.Bg2 (15.Be2 Qe5 16.Nb3 Qf5-+) 15...Ne5 16.0-0 Bh3 17.Bh3 (17.Na3 Rad8 18.Nc4 Neg4-+) 17...Qh3 18.Na3 (18.g4 Qg4 19.Qg3-+) 18...Nfg4 (18...Neg4!? 19.Rf2 Nf2 20.g4-+) 19.Ne2 0-1. BitChess (2355) - genodesis (2545), Rated Bullet game, lichess.org, 2016.

4.Bb2 Bc5 5.e3 Bg4 6.f3 Bh5 7.Be5 Qe7 8.Bb2 0-0 9.Nh3 Re8 (better is 9...d4!?=+) 10.Be2+= d4 11.e4?? (better is 11.ed4 Bb4 12.Kf2+/–) 11...Ne4!-/+ 12.d3 Nc3! 13.Nc3 dc3 14.Bc3 Qh4 15.Kf1= g5?? 16.Qe1?? Qe1? 17.Be1 h6 18.g4 Bg6 19.Kg2?? Nd7 20.Bf1 Nf6 21.Nf2 Nd5 22.Ne4 Ne3 23.Kh3 Be4 24.de4 Nc2 25.Bc3? Na1-/+ 26.Ba1 Rad8 27.Bc4 Bd4 28.Bd4 Rd4 29.Bd5 Rd8 30.Rc1 c6 31.bc6 bc6 32.Rc6 Ra4 33.Rh6 Kg7 34.Rc6 Rd4 35.Rc7+= R4d5 36.ed5 a5 37.Rc5 Ra8 38.d6 Kf6 39.d7 Ke7?? 40.Rg5 a4 41.Re5 Kd7 42.Re1 a3 43.Kg3 a2 44.Ra1 Kc6 45.h4 Kc5 46.g5 Kc4 47.h5 Kb3 48.Rc1 Kb2 49.Rh1 Rh8 50.Kg4 a1Q 51.Ra1 Ka1 52.f4 Kb2 53.g6 fg6 54.hg6 Kc3 55.Kg5 Kd4 56.Kf6 Rh1 57.f5 Ke4 58.g7 Rg1 59.Kf7 1–0. azme – antoniogomes, kurnik, 2011.

4.Bb2 Bd6 5.e3 Be6 6.Nf3 Nbd7 7.Be2 0-0 8.h3 c5 9.c4 (9.a5 e4 10.Ng5 Bf5-/+) 9...d4 10.ed4 ed4 11.d3 Re8 12.Nbd2 (12.0-0 Qa5-/+) 12...Bf5 (12...Qe7 13.g4-/+) 13.0-0 Rc8 (13...a6 14.Re1-/+) 14.a5=+ Bb8 15.Re1 Qc7 16.Nf1 Bg6 17.Ng3 Nh5 18.Nf1 (18.Nh5 Bh5 19.g3 Nf6=) 18...Nf4=+ 19.Ra3 Nf6 20.Bc1 Ne2 21.Re2 Re2 22.Qe2 Re8 23.Qd1 Qe7 24.b6 a6 25.Ra2 Nh5 26.Bg5 f6 27.Bh4 Nf4-/+ 28.Rd2? Bf5?? 29.Bg3=+ Qf7 30.Bf4 Bf4 31.Re2 Bb8 32.Qe1 Re2 33.Qe2 Qe6 34.Qd2 h6 35.Ng3 Bg3 36.fg3 Kf7 37.Kf2 Qd6 38.g4 Bd7 39.g3 Bc6 40.Qf4 Qe7 41.Nd2 g6 42.h4 Kg7 43.Qc7 Qc7?? 44.bc7+– Bd7 45.Nb3 Kf7 46.Nc5 Ke7 47.Nb7 h5? 48.Nc5 Bc8 49.gh5 gh5 50.Kf3 Kd6 51.Nb3 Ke5 52.Kf2 f5 53.Nc5 Kd6 54.Nb3 Ke5 55.Kf3 Bb7 56.Kf2?? Kd6?? 57.Nd4+– Kc7 58.Nf5 Bc8 59.Ne3 Bd7 60.d4 Be6 61.Kf3 Bd7 62.Kf4 Kd6 63.Kg5 Kc6 64.Kh5 Kd6 65.Kg5 Kc6 66.h5 Kd6 67.h6 Kc6 68.Nf5 Kc7 69.Ne7 Kd6 70.Nd5 Kc6 71.Nf6 Kc7 (71...Kc7 72.Nd7 Kd7 73.Kf6 Ke8 74.g4 Kd8 75.h7 Kc7 76.Kf5 Kd7 77.h8Q Kc7 78.Qh7 Kd6 79.Kf6 Kc6 80.g5 Kd6 81.Qe7 Kc6 82.d5) 1–0. blackiwhite (1710) – 27agacia27 (1730), kurnik, 2011.

4.Bb2 Nbd7 5.Nf3 e4 6.Nd4 Ne5 7.e3 Bd6 8.Be2 0-0 9.Nc3 c6 10.bc6 bc6 11.0-0 Bd7 12.Rb1 Qc7 13.h3 Rab8 14.f4 ef3 15.Nf3 Bc5 16.Ng5= Ng6 17.Qe1 Rb4 18.Ba1 Rfb8 19.Rb4 Rb4 20.Nd1 Be7 21.Nc3 Bd8 22.Qf2 Qb8 23.Bd3 Ne5 24.Bf5 Bf5 25.Qf5 g6 26.Qf2= h6 27.Nf3 Nc4 28.d3+= Nb6 29.Nh2 Qc7 30.Na2+– Ra4 31.Bf6 Bf6 32.Qf6 Ra2 33.Ng4 Kh7 34.Qd4 h5 35.Nf6 Kh6 36.Ne8 Qg3 37.Qg7 Kg5 38.Rf5!! Kh4 39.Qf6 g5 40.Rf4 Qg4 41.Rg4 hg4 42.g3! Kh5 43.Ng7 1–0. Trkn – COMP, 2002.

4.Nf3 Bd6 5.Ba3-/+.

4.Nf3 Nbd7 5.d4 (5.e3 a6=+) 5...e4-/+ 6.Ne5 Ne5 7.de5 Nd7 (7...Ng4 8.Qd4 c5 9.bc6 Qa5 10.Qd2 Qd2 11.Nd2 bc6-/+ (11...Ne5?! 12.cb7 Bb7 13.Bb2=)) 8.Qd5+= Nb6 (8...Qh4!?+=) 9.Qe4+- Be7 (9...a6 10.e3+-) 10.a5 Nd5 11.c4 (11.e3 a6 12.Bc4 Be6 13.ba6 ba6+-) 11...Bb4 (11...Nb4!?+-) 12.Bd2+- Bd2 13.Nd2 Nc3?? (better 13...Ne7+-) 14.Qf3 (14.Qc2!? Nb5 15.cb5 0-0+-) 14...Qd4 15.Ra3 Nb1 The mate threat is Qxd2 16.Nb1 Qb2 Do you see the mate threat? 17.Qd3 (17.Qb3!? Qc1 18.Qd1 Qc4+-) 17...Bf5 18.Rb3 (18.Qf5 Qc1 A beautiful mate combination) 18...Qc1 (18...Qa2 19.e4 Be4 20.Qe4 Qb3 21.c5+-) 19.Qd1 Qc4 20.Nd2 Qc5 (20...Qa4 21.a6 ba6 22.ba6+-) 21.h3 (better 21.Qa1+-) 21...Qe5 (21...Be6 22.Rb1 Rd8+-) 22.Re3 Qe3 23.fe3 0-0 24.g4 Bd7 25.Bg2 Bb5 (25...Rab8 26.Qb1+-) 26.Bb7 Rad8 27.Qb3 (27.Qc2 Rd7+-) 27...a6 (27...c6 28.Ne4+-) 28.Ne4 (28.Qc2 Rd7 29.Ne4 Rfd8+-) 28...h6 (28...Rb8 29.Nc5 Bc6 30.Rf1+-) 29.Nc5 Rb8 30.Rf1 (better 30.Qc2 Rfe8 31.Ba6 Bc6+-) 30...Rbe8 (30...Bc6 31.Rf4 Bb7 32.Nd7+-) 31.Na6 Re5 (31...Ba6 32.Ba6 Re5 33.Bc4+-) 32.Nc7 Rb8 33.a6 Ba6 34.Na6 (better 34.Qf7 Kh8 35.Ba6 Rg8+-) 34...Rbe8 35.Qf7 Kh7 36.e4 (36.g5 Rg8 37.gh6 Rh5 38.Be4 Rf5 39.Bf5 Kh8 40.Qg6 gh6 41.Qh6) 36...R8e7 37.Qb3 Re4 38.Be4 Re4 (38...g6 39.Rf7 Rf7 40.Qf7 Kh8 41.Qg6 h5 42.Qh7) 39.Qd3 (39.Qd3 h5 40.Qe4 Kg8 41.Qe8 Kh7 42.Rf8 g6 43.Qe7 Kh6 44.g5) 1-0. hamiltonharris (1785) - AL HARRIS (1630), ChessWorld.net, 2014.

5.Qd4 c5 6.Qe5 Be6 7.Bf4 d4 8.Qc7 Qc7 9.Bc7 Nbd7 10.Nf3 Nd5 11.Bg3 N7f6 12.Be5 Ng4 13.Bg3 Rd8 14.h3 Ngf6 15.Na3 Ne4 16.Bh4 f6 17.Nd2 Nd2 18.Kd2 Bd6 19.Nc4 Bf4 20.Ke1 Nb4 21.Na3 g5 22.Bg3 Bg3 23.fg3 f5 24.h4 gh4 25.Rh4 Ke7 26.Kf2 Nd5 27.Nc4 Nf6 28.Na5 Ng4 29.Kg1 Rd7 30.Rc1 Ne3 31.c3 Kf6 32.cd4 cd4 33.Kh2 Rg8 34.Rf4 Ke5 35.Rh4 Bd5 36.Rb1 Rc7 37.Rh3 Rgc8 38.g4 Rc1 39.Rc1 Rc1 40.Rh7 Nf1 41.Kh3 Kf4 42.gf5 Ne3 43.g3 Kg5 44.Rg7 Kf5 45.Rg5 Kg5 46.Nc6 Rh1 0–1. Comet B25 – Fritz 8, 2003.

5.Qd4 c5 6.Qe5 Be6 7.Bf4 d4 8.Nd2 Nbd7 9.Qc7 Qc7 10.Bc7 Nd5 11.Bg3 Nb4 12.Rc1 Bf5 13.c4 Nc2 14.Kd1 Nb4 15.Bc7 a6 16.b6 Nf6 17.Ke1 Bd7 18.a5 Be7 19.Ngf3 Ba4 20.Ne5 Nc2 21.Kd1 Na3 22.Ke1 h6 23.g3 Bd8 24.Bg2 Bc7 25.bc7 Rc8 26.Kf1 Nd7 27.Nd7 Bd7 28.Be4 f5 29.Bb7 Rc7 30.Ba6 Ra7 31.Bb5 Nb5 32.cb5 Ra5 33.Rc5 Rb5 34.Rc4 Ke7 35.Rd4 Rhb8 36.Kg2 Be6 37.e4 fe4 38.Re1 Re5 39.Ne4 Rb2 40.Kf3 g5 41.g4 Rb3 42.Re3 h5 43.gh5 g4 44.Kg3 Rh5 45.Rb3 Bb3 46.Kg4 Rh2 47.Kg3 Rh1 48.Nc5 Bc2 49.Ne4 Bb3 50.Nc5 Bc2 51.f3 Rd1 52.Rd1 Bd1 53.f4 Bc2 54.Kg4 Kf6 55.Nd7 Kg6 56.Ne5 Kf6 57.Nd7 Kg6 58.Ne5 Kf6 59.Nc6 Bf5 60.Kg3 Bc8 61.Kf2 Bf5 62.Kf3 Bb1 63.Nd4 Kg6 64.Nb5 Bd3 65.Nd6 Kf6 66.Ke3 Ke6 67.Kd3 Kd6 68.Ke4 Ke6 69.f5 Kd6 70.Kf4 Ke7 71.Kg5 Kf7 72.f6 Kf8 73.Kf5 Kf7 74.Kg5 Kf8 ½–½. Crafty 19.01 – Fritz 8, 2003.

5.Qd4 Nbd7 6.Bb2 Bc5 7.Qh4 g5 8.Qh3 Ne4 9.Bh8 Bf2 10.Kd1 Bc5 11.Ke1 Bf2 12.Kd1 Bb6 13.Qh7 Nf2 14.Kc1 Nh1 15.Qg8 Nf8 16.Nf3 Be3 17.Nbd2 a6 18.Ra3 Qe7 19.Rd3 Nf2 20.Re3 Qe3 21.Ng5 Be6 22.c3 Qc5 23.Nb1 Ne4 24.Bd4 Qd6 25.g3 Ng5 26.Qg5 ab5 27.ab5 Ra2 28.Qf6 Ng6 29.Bf2 Qd7 30.e3 Bf5 31.Nd2 Ra1 32.Kb2 Rd1 33.Qd4 Rf1 34.Nf1 Qb5 0–1. Comet B25 – Fritz 5.32, 2003.

5.Qd4 Nbd7 6.e3 Bc5 7.Qf4 Bd6 8.Qh4 Ne5 9.Bb2 Bg4 10.Be2 0-0 11.Nd2 Be2 12.Ne2 Ne4 13.Qd8 Rfd8 14.Ne4 de4 15.0-0 Nc4 16.Bc3 Rd7 17.Rfd1 Rad8 18.Rd4 Na3 19.Rc1 f5 20.Bb2 c5 21.bc6 bc6 22.g4 fg4 23.Rd6 Rd6 24.Ba3 Rd1 25.Kg2 Rc1 26.Bc1 Rd1 27.Bb2 c5 28.Nc3 Rd2 29.Ne4 Rc2 30.Ba3 c4 31.Bc5 a6 32.Bb4 Rc1 33.Kg3 h5 34.Kh4 g6 35.Kg5 Kg7 36.Bc3 Kf7 37.Bd4 Rc2 38.Kh6 h4 39.Kg5 g3 40.fg3 h3 41.Kg4 Rh2 42.Ng5 Ke7 43.Nh3 Ra2 44.Nf4 Kf7 45.Kg5 Ra3 46.Nd5 Ra4 47.Kf4 Ke6 48.e4 Ra2 49.g4 a5 50.Kg5 Kf7 51.Nf4 a4 52.e5 Rd2 53.e6 Ke8 54.Bc5 Rd1 55.Kg6 Re1 56.Ba3 Re3 57.Bc5 Re1 58.Ba3 Re3 59.Bc1 Re1 60.Bd2 Re5 61.Kf6 Re4 62.Kf5 Rd4 63.Bb4 c3 64.Bc3 Rd1 65.g5 Rb1 66.g6 Kf8 67.Be5 Rg1 68.Bd6 Ke8 69.Bc5 Rg3 70.Nh5 1–0. Crafty 19.01 – Fritz 5.32, 2003.

5.Qd4 Be7 6.Nf3 Bf5 7.Ra2 0-0 8.e3 a6 9.Qe5 Be4 10.Ba3 Ba3 11.Na3 Bf3 12.gf3 Re8 13.Qf4 ab5 14.Bb5 c6 15.Bd3 b5 16.Nb1 d4 17.0-0 de3 18.fe3 Nd5 19.Qd4 Re3 20.c4 Qb6 21.Qb6 Nb6 22.Ra3 Nc4 23.Rb3 Re5 24.Bc4 bc4 25.Rb4 Rg5 26.Kf2 Rh5 27.Kg3 Rc5 28.Rc1 Rg5 29.Kf4 Rg2 30.h4 Rh2 31.Kg3 Re2 32.Rcc4 g6 33.Rb7 Re5 34.Rf4 f5 35.Rd4 Rd5 36.Rd5 cd5 37.Nc3 d4 38.Nd5 Nc6 39.Nf6 Kf8 40.Nh7 Ke8 41.Rc7 Ne5 42.Kf4 Ra5 43.Ng5 Nd3 44.Kg3 Ra4 45.Ne6 Ne5 46.Rc5 Nf7 47.Rd5 Ke7 48.Nd4 Nd6 49.Kf4 Ra8 50.Kg5 Rg8 51.Re5 Kd7 52.Rc5 Ne8 53.Ra5 Kd6 54.Ra6 Ke5 55.Nb5 Ng7 56.f4 Ke4 57.Ra4 Kd5 58.Kg6 Ne8 59.Kf7 Rh8 60.h5 Kc5 61.Nd4 Nd6 62.Kg6 Rg8 63.Kh7 Rb8 64.h6 Kd5 65.Kg7 Rb7 66.Kg6 Rb2 67.Nf5 Rg2 68.Kf6 Nf5 69.Kf5 Rh2 70.Ra5 Kd6 71.Kg6 Rg2 72.Rg5 Rb2 73.h7 Rh2 74.Rh5 Rg2 75.Kf5 1–0. Crafty 19.01 – Doctor? 3.0, 2003.

4.bc5 Bc5 5.d4 ed4 6.cd4 Bb4 7.Bd2 Nc6 8.Bb4 Nb4 9.Qb3 Qc7 10.Nc3 Qb6 11.Rb1 Nbd5 12.Nd5 Nd5 13.Nf3 0-0 14.e3 Qa5 15.Nd2 Nc3 16.Nc4 Qf5 17.Rb2 Ne4 18.f3 Nf6 19.Nd6 Qa5 20.Kf2 Qc7 21.Qb4 Nd5 22.Qc5 Qc5 23.dc5 Nc3 24.Rc2 Nd5 25.Bc4 Nb4 26.Rb2 a5 27.Rc1 h6 28.Rd2 g6 29.Nc8 Rac8 30.Rd7 Rc5 31.g4 Kh8 32.Rd4 Rfc8 33.e4 Nd3 34.Rd3 Rc4 35.Rd8 Rd8 36.Rc4 Rd2 37.Kg3 Kg7 38.e5 Re2 39.Rc5 b6 40.Rd5 Rb2 41.Rd7 Kg8 42.Rd8 Kg7 43.Rd7 Kf8 44.Rd8 Ke7 45.Rb8 Ke6 46.f4 g5 47.fg5 hg5 48.Re8 Kd7 49.Rf8 Ke7 50.Rg8 Rb3 51.Kg2 Ra3 52.Rg5 Ra4 53.h4 b5 54.Kf2 b4 55.h5 Ra2 56.Kg3 b3 57.h6 b2 58.h7 b1Q 59.Rf5 Qe1 0–1. Comet B25 – Comet B50, 2003.

4.bc5 Bc5 5.d4 ed4 6.cd4 Bb4 7.Bd2 Nc6 8.Bb4 Nb4 9.Qb3 Qc7 10.Qe3 Kd8 11.Na3 Qa5 12.Qd2?? Ne4 13.Nc4 Qf5 14.Qb4 Qf2 15.Kd1 0–1. Comet B25 – Fritz 5.32, 2004.

4.bc5= Bc5 5.d4 ed4 6.cd4 Bb4 7.Bd2 Nc6 8.Nf3 0-0 9.e3 Be7 10.Bd3 Nb4 11.Bb4 Bb4 12.Nbd2 d5 13.Rb1 Qa5 14.Qb3 Bd2 15.Nd2+= Rb8 16.Qb4 Qb4 17.Rb4 a5 18.Rb5 b6 19.Rb2 Bd7 20.Bc2 b5= 21.ab5 Bb5 22.Bf5 a4 23.Ra2 Rfe8 24.Nb1 Re7 25.Bc2 Ne4 26.Be4 de4 27.Kd2 Bc6 28.Rc1 Re6 29.Nc3 Rg6 30.g3 Rf6 31.Ke1 Bd7 32.Ne4+– Rfb6 33.Nc5 Be8 34.Na4 Rb1 35.Rb1 Rb1 36.Kd2 Rf1 37.Kd3 Bb5 38.Ke4 Bc6 39.Ke5 h5 40.Nc5 Rc1 41.e4 Bb5 42.Ra5 Be2 43.d5 f6 44.Kd4 g5 45.d6 Rd1 46.Ke3 Bg4 47.Ra8 Kf7 48.Ra7 Ke8 49.Re7 Kf8 50.Nd3 Bh3 51.Rc7 Bf1 52.Rc3 Kf7 53.d7 Ke7 54.e5 fe5 55.Ne5 Rd7? 56.Nd7 Kd7 57.Rc5 h4 58.Rg5 hg3 59.hg3 Bc4 60.f4 Ke7 61.g4 Kd6 1–0. Doctor? 3.0 – EXchess 3.11, 2004.

4.b5 Na5 5.d4 e4 6.e3 d5 7.Ba3 Ba3 8.Na3 Bg4 9.Qb1 0-0 10.h3 Bh5 11.Ne2 Qd6 (11...Be2!? 12.Be2 Rc8=+) 12.Nf4 c6 13.Qb4 Qc7 14.c4 cb5 (better is 14...Bg6!?=) 15.Nb5+/- Qb6 16.cd5 a6 17.Qd6 Qd6 18.Nd6 Nb3? (better is 18...Bg6+/-) 19.Rb1+- (19.Nh5?! Na1 20.Nf6 gf6 21.Ne4 Rfd8+-) 19...Na5 20.Nh5 (20.Nb7?! Rfb8 21.g4 Bg6+=) 20...Nh5 21.Ne4 (21.Nb7 Rfb8 22.g4 Nf6=+) 21...Rac8 (21...Rfe8 22.Nc5+-) 22.g4 Nf6 23.Nf6 gf6 24.Kd2 Nc4 25.Bc4 Rc4 26.Rb7 Ra4 27.Kd3 Ra3 28.Kc4 Rc8 29.Kb4 Ra2 30.Rb1 a5 31.Kb5 Rf2 32.d6 Rfc2 33.d7 Rd8 34.h4 Kg7 35.Ka5 Ra2 36.Kb5 Rc2 37.e4 f5 38.gf5 h5 39.e5 f6 40.Rg1 Kf7 41.e6 Ke7 42.Rg7 Kd6 43.e7 Rd7 44.e8Q Rb2 45.Kc4 Rbb7 46.Qe6 (46...Kc7 47.Qd7 Kb6 48.Qb7 Ka5 49.Qb5) 1-0. MT - guest1266, ICC, 2004.

4.b5 Na5 5.e3 d5 6.d4 b6?? (6...e4 7.Nd2-+) 7.Nd2 (7.de5 Nd7 8.f4+= (worse 8.Qd5 Bb7 9.Qd1 Ne5=+)) 7...Bd6 (7...e4 8.Qc2-/+) 8.h4 (8.de5 Be5 9.Qc2 0-0=) 8...0-0 (8...e4!?-/+) 9.de5=+ Be5 10.Bb2 h6 11.f4?? (better 11.Ngf3 Ng4 12.Bd3=+) 11...Bd6-+ 12.Be2 Bf5 (better 12...Re8!? 13.Nf1-+) 13.Ngf3 (13.g4!? Be6 14.g5 Ne4-/+) 13...Qd7 14.c4 Rfe8 (14...Ng4 15.Bd4 Rae8 16.Ne5 Ne5 17.fe5 Be5 18.0-0 Bd4 19.ed4 dc4 20.Nc4-+) 15.Bf6 (15.Ne5!? Be5 16.fe5-/+) 15...gf6-+ 16.cd5 Re3 17.0-0? (better 17.Nf1 Ree8 18.Ng3-+) 17...Bf4 (17...Bc5 18.Kh1-+) 18.Nc4?? (better 18.Nd4 Re2 A) 19.Qe2 Re8 20.Ne6 Bd2 (worse 20...fe6 21.Rf4 Qd5 22.Re1+/-) 21.Rf5 fe6 22.Rf6 Qd5=+; B) 19.Rf4 Rd2 20.Qd2+-) 18...Nc4-+ 19.Bc4 Bg4?? (better 19...Rc3 20.Be2 Re8-+) 20.Nd4?? (better 20.Qd4 Bf3 21.Qf4=) 20...Bd1-+ 21.Rad1 (21.Rf4 Re1 22.Rf1 Qg4-+) 21...Qg4 22.Rf2 Qd1 23.Bf1 (23.Rf1 Qd4 24.Rf4 Qf4 25.Bf1 Re1 26.g3 Qg3 27.Kh1 Rf1) 23...Qd4 24.Kh1 (24.Rf4 Qf4 25.Kh1 Qf1 26.Kh2 Qf4 27.g3 Rg3 28.Kh1 Qh4) 24...Re1 (24...Rh3 25.gh3 Qf2 26.Bg2 Qe1 27.Bf1 Qf1) 25.Kg1 (25.Rf3 Qc4 26.Kg1 Rf1 27.Rf1 Be3 28.Rf2 Qf4 29.h5 Qf2 30.Kh2 Qh4) 25...Bg3 (25...Rf1 26.Kf1 Qd1) 26.Kh1 (26.d6 Qf2 27.Kh1 Rf1) 26...Qf2 27.d6 Qf1 (27...Rf1) 0-1. Paul593 - Southern Gentleman, ChessWorld.net, 2009.

4.b5 Nb4 5.cb4 a6 6.ba6 ba6 7.Ba3 c5 8.bc5 d6 9.cd6 Qd6 1–0. guest1149 – guest311, ICC, 2003.

4.Ba3 e4 5.a5 Bd6 6.Qa4 Bd7 7.Qd1 a6 8.g3 0-0 9.Bh3 Re8 10.e3 Nc6 11.Ne2?? (better is 11.f4-+) 11...Bh3 12.Nf4 Bf4 13.gf4 Bg4 (better is 13...Ng4!? 14.Rg1 Nh2 15.Rg3-+) 14.Qc2 Bf3 15.Rg1 Qd7 16.d4 Qh3 17.Nd2 Qh2 18.Nf3 ef3 19.Kd2 (19.0-0-0 Ne4 20.Rdf1-+) 19...Qf2 20.Kd3 Qe3 (20...Re3?!=) 0–1. andremb – yulio (2020), gameknot.com, 2012.

4.a5 Bd6 5.d4 ed4 6.Qd4-/+.

4.Bb2 c5 5.b5 (5.bc5 Bc5 6.d4 ed4 7.cd4 Bb4 8.Bc3 Bd6+=) 5...Be7 6.e3 0-0 7.c4 d4 8.ed4 cd4 9.h3 Nbd7 10.Be2 Nc5 11.Nf3 a6 (better is 11...d3 12.Bf1 Re8-+) 12.Ne5= ab5 13.ab5 Ra1 14.Ba1 Re8 (14...Qd6 15.Nd3=) 15.0-0+= Qd6 16.f4 Rd8 (16...Ncd7 17.Nd7 Bd7 18.Bd3+=) 17.d3 Nfd7 18.Nd7 Bd7 19.Nd2 Qg6 20.Rf3 (20.Bd4? Bh3 21.Rf2 Rd4-+) 20...Bd6 (better is 20...Bf5!? 21.Qf1 Bf6+=) 21.Bd4+/– Ne6?? (better is 21...Bf5+/–) 22.f5+– Qg5 23.fe6 Be6 24.Ne4 Qe7 25.Nd6 (25.Qa1!? f6+–) 25...Qd6 26.Bf2 (better is 26.Ba1 Bc4 27.Qc1 Bd5+–) 26...g6 (26...Bc4 27.dc4 Qd1 28.Bd1 Rd1 29.Kh2 f6+–) 27.Qa1 Bd7 28.Qf6 Be6 (28...Qf6 29.Rf6 Be6 30.Bg3+–) 29.d4 (29.c5 Qf8+–) 29...Ra8 (29...Bf5 30.Qd6 Rd6+–) 30.d5 (30.d5 Qd8 31.de6 Qf6 32.Rf6 fe6 33.Re6 Ra1 34.Bf1+–) 1–0. giraira – petepete2, gameknot.com, 2018. (=1.c3 d5 2.b4 e5 3.a4 Nf6)

4.Bb2 Nc6 5.e3 a6 6.Be2 d4 (6...Bd6 7.d3-/+) 7.ed4 (7.cd4 ed4 8.b5 Nb4 9.Bd4 Bf5=) 7...ed4+= 8.d3? (8.b5 ab5 9.ab5 Ra1 10.Ba1 Ne7+=) 8...Bf5 (8...dc3 9.Nc3 Bb4 10.Nf3-/+) 9.h3? (9.Bf3 Qe7 10.Kf1 Rd8 11.Bc6 bc6 12.cd4 Nd5-/+) 9...Be7 (9...dc3!? 10.Nc3 Nb4 11.Nf3-+) 10.g4 Bg6 11.Nd2 (11.g5 Nd5 12.b5 Ne5-/+) 11...0-0 (11...dc3 12.Bc3 Bb4 13.Qb3 Bc3 14.Qc3-+) 12.Ngf3 (better is 12.b5 dc3 13.Bc3-+) 12...dc3 13.Bc3 Bb4 14.Bb4 Nb4 15.0-0 Nd3 16.Nh4 (16.Bd3 Qd3 17.Qb3 Qb3 18.Nb3 Rfd8-+) 16...Ng4! 17.Ng6 (17.Bg4 Qh4 Discovered attack; 17.hg4 Qh4 Discovered attack) 17...Ngf2 (17...hg6?! 18.hg4 Re8 19.Rb1=) 18.Rf2 Nf2 (18...hg6?! 19.Bd3 Qd3 20.Qg4+=) 19.Kf2 Qf6 20.Bf3 hg6 (20...Qg6 21.Qb3 Qh6 22.Ne4-+) 21.Ne4 Qb6 (21...Qe5 22.Kg2-+) 22.Kg2 Rad8 (22...Qb2 23.Nf2 Rad8 24.Rb1-+) 23.Qe2 (23.Qc2 Qa5-+) 23...Rfe8 24.Qc2? (24.Rd1 Qb4-+) 24...c6 (better is 24...Qe3 25.Rf1 Rd3-+) 25.Rb1 Qc7 26.Qc3 (26.Qc1 a5-+) 26...b6 (26...Qf4 27.Qc4-+) 27.Nf2 Rd6 (27...c5 28.Qc4 Qa7 29.Rf1-+) 28.Ne4 (28.a5 ba5 29.Ra1 Rde6-+) 28...Rde6 29.Ng5 Rd6 30.Re1?? (30.Ne4 Rd7 31.Qe3-+) 30...Red8 (30...Re1 31.Qe1 Qd8 32.Ne4-+) 31.Qe3 (31.Re2 Qd7-+) 31...Rd2 32.Kf1 (better is 32.Kg1 Qd6 33.Qe8 Re8 34.Re8 Qf8 35.Bc6-+) 32...R2d3?? (better is 32...Qd7-+) 33.Qe8!! Re8 (33...Re8 34.Re8) 34.Re8 1–0. giraira – rttesse, gameknot.com, 2018. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.Bb2 Nc6 5.e3 Bd6 6.h3 0-0 7.Ne2 a6 8.d4 e4 (8...Re8 9.b5 ab5 10.ab5 Ra1 11.Ba1-/+) 9.Nd2 Bf5 10.g4 Bg6 11.Bg2 (11.Nf4 Ne7+=) 11...Re8 12.0-0 h6 13.f4 (13.Nf4 Ne7+=) 13...b5 (13...ef3!? 14.Rf3 Ne4-/+) 14.a5 (14.Nb3 Qe7=) 14...Qd7 15.f5 Bh7 16.Nf4 Bf4 17.Rf4 g6?? (better is 17...Qd6=) 18.fg6+– Bg6 (18...fg6 19.Rf6 Rf8 20.Rf8 Rf8 21.Qe2+–) 19.Rf6 Kg7 20.Qf1 Qe7 (20...Re6 21.Rf4 Qd6+–) 21.Rc6 f6 (21...Red8 22.Qf4+–) 22.Qf4 Qd7 (22...Ra7+–) 23.Qf6 Kg8 24.Qg6 Qg7 25.Qh6 (better is 25.Qh5 Kh7 26.g5 Rad8+–) 25...Qh6 26.Rh6 Kg7 27.Rc6 Ra7 28.Rf1 Rh8 29.Rff6 1–0. giraira – jimmykk, gameknot.com, 2018. (=1.c3 d5 2.b4 e5 3.a4 Nf6)

4.Bb2 d4 5.cd4 ed4 6.Nf3 c5 (6...Bb4 7.Nd4 0-0 8.e3+=) 7.bc5= Bc5 (7...Nc6 8.Qc2=) 8.Qb3 (8.Qc2 b6 9.Bd4 Bd4 10.Nd4 0-0+=) 8...0-0 (8...Nc6 9.e3+=) 9.g3 (9.Qc4!? Na6 10.Nd4=) 9...b6 10.Bg2 Nc6 11.0-0 Be6 12.Qd1 d3 13.e3 Nb4 14.Ne1 (14.Nc3 Rc8+=) 14...Rc8-/+ 15.Nc3 Qd7 16.Ne4 (16.a5 b5+=) 16...Ne4-/+ 17.Be4 Rfe8 18.f4 (18.Qh5 f5 19.Bg2 Nc2 20.Nc2 dc2-/+) 18...Bg4 19.Qc1?? (better is 19.Bf3 Bf3 20.Nf3-+) 19...Be3!-+ 20.de3 Rc1 21.Rc1 (21.Bc1 Re4 22.Rf2 f5-+) 21...d2 22.Rc4 (22.Bf3 dc1B 23.Bc1 Bf3 24.Nf3 Qa4-+) 22...d1Q 23.Rb4 0–1. giraira – marcjb, gameknot.com, 2018. (=1.c3 Nf6 2.b4 e5 3.a4 d5)

4.Bb2 Bd6 5.Nf3-/+.

4.Bb2 Bd6 5.g3 0-0 6.Bg2 Be6 (6...e4 7.d3-/+) 7.d3 c5 8.b5 (8.bc5 Bc5 9.Ba3 Ba3 10.Ra3 Nc6-/+) 8...a6 9.Na3 Nbd7 10.ba6 (10.Nf3 e4 11.de4 Ne4-/+) 10...Ra6 (10...ba6 11.c4-/+) 11.Nb5 Be7 12.Nf3 h6 (12...e4 13.de4 Ne4 14.0-0-/+) 13.0-0 Qb6 14.c4 d4 15.e3 Ne8 (15...Rfa8 16.Qb3+=) 16.ed4 ed4 (16...cd4? 17.Ne5 Bc5 18.Nf3+–) 17.Re1 (17.Ba3 Qd8=) 17...Nc7 18.Ne5 Ne5 19.Re5 Nb5 20.cb5 Ra5 21.Rc1 Rfa8 (21...Bd6 22.Re1+=) 22.Ra1 Qa7 23.f4 Qb6 (23...Bf6 24.Rh5-/+) 24.f5 Bd6 25.fe6 Be5 26.ef7 Kf7? (better is 26...Kh8=) 27.Qh5+– (27.Qh5 Kf8 28.Qe5+–) 1–0. giraira – bigmorg, gameknot.com, 2018. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.Qb3 Be6 5.d4 ed4 6.cd4 Bd6 (6...Nc6!?-+) 7.Ba3 0-0 8.Nc3 Nc6 9.e3 Ne7 (9...Bf5 10.b5 Na5 11.Qb2+=) 10.Nf3 b6 11.Ng5 c5 (11...Bf5!?=) 12.bc5+= bc5 13.dc5 Rb8 14.Bb5 Bc5?? (better is 14...Be5 15.Ne6 fe6=) 15.Bc5+– a6 (15...Rb7 16.Qa3+–) 16.Qa3 ab5 17.Be7 Qc7 (17...b4 18.Bd8 ba3 19.Bf6 gf6 20.Ne6 fe6 21.Ra3+–) 18.Nb5 Qa5 19.Bb4 Qa6 20.Bf8 Rf8 21.0-0 Bf5 22.Rfc1 h6 23.Nf3 Ne4 24.Nc7 Qe2 (24...Qb7 25.Nd4 Bd7 26.a5+–) 25.Ra2 (25.Ra2 Nc3 26.Rb2+–) 1–0. JenSpeed (2220) – Makan (1960), FICS rated standard game, 2013. (=1.a4 d5 2.b4 e5 3.c3 Nf6)

4.Qb3 Be6 5.e3 Ne4 (5...Bd6 6.d4-/+) 6.Nf3+= Bg4 (better is 6...Nd7!?+=) 7.Ne5+= Qf6?? (better is 7...Be6+=) 8.Ng4+– Qh4 (8...Qg5 9.h3+–) 9.Be2 (9.Qd5 Nd6 10.Be2 Nd7+–) 9...h5 (9...c6 10.d3 Nd6 11.0-0+–) 10.Qd5 hg4 (10...Nd6 11.Ne5 c6+–) 11.Qe4 Be7 12.Qb7 Bd6 13.Qa8 Kd7 14.Qe4 (14.g3!? Qh7+–) 14...g3 15.Qh4 Rh4 16.h3 1–0. giraira – mozzie1, gameknot.com, 2017. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.Qb3 Be6 5.Nf3 Bd6-/+.

4.b5 b6 5.g3 (5.Nf3 Nbd7-/+) 5...Be6 (5...e4 6.Nh3-/+) 6.Bg2 (6.Nf3 Nbd7-/+) 6...Nbd7 (6...Bd6-/+) 7.e3 (7.Nf3!?-/+) 7...e4 8.Ne2 Bg4 (8...Ne5 9.0-0-/+) 9.0-0 (9.h3!? Be6 10.0-0-/+) 9...Ne5-+ 10.Bb2 (10.Na3-+) 10...Nc4 (10...Bd6 11.c4 dc4 12.Na3-+) 11.Bc1 (11.Ba3 a6 12.Bf8 Kf8 13.ba6 Ra6-/+) 11...Qd7 (11...a6 12.ba6 Ne5 13.Na3-/+) 12.f3 (better is 12.d3!? ed3 13.Qd3-/+) 12...ef3-+ 13.Bf3 Bf3 14.Rf3 Qh3 (14...a6!? 15.ba6 Ra6-+) 15.Nf4-/+ Qh6 (15...Qg4 16.Na3 Ba3 17.h3-/+) 16.Na3 (16.Qe2 Na5+=) 16...Ba3 (16...Ne5 17.Rf1 g5=) 17.d3?? (17.Ba3 g5 18.Ng2-/+) 17...Bc1-+ 18.Qc1 (18.dc4 Bb2 19.Ra2 Bc3-+) 18...Ng4 (better is 18...Ne5!? 19.Rf2 g5 20.d4 gf4 21.de5 fg3 22.hg3-+) 19.h4 (19.h3 Nce5 20.Rf1-+) 19...0-0-0 (better is 19...Nce5 20.Rf1 0-0-+) 20.dc4 dc4 21.a5 (21.Qb1 Qd6 22.Qf5 Qd7-+) 21...Rhe8-+ 22.ab6 (better is 22.Qa3-+) 22...cb6?? (better is 22...Qb6 23.Ng2 Ne5-+) 23.Ra7+= Ne5?? (23...Qd6 24.Qa1 Qd1 25.Rf1 Qa1 26.Rfa1 Ne5+/– (26...Re3? 27.Ra8 Kd7 28.Rd1 Rd3 29.Rd8 Kd8 30.Nd3 cd3 31.Rd3 Ke7 32.Rd4+–)) 24.Rf2 (better is 24.Qa1 Nf3 25.Kf2 Rd2 26.Kf3+–) 24...Nd3?? (24...Qd6!? 25.Rfa2 Qd1 26.Qd1 Rd1 27.Kf2 Red8+/–) 25.Qc2 (25.Qa1 Nc5 (25...Nf2 26.Qa6 Kb8 27.Qb7) 26.Rf7 Rd7 27.Qa8 Kc7 28.Qe8 Qd6 29.Ra2 Qd1 30.Kg2 Qc2 31.Kh3 Qf5 32.Rf5 g5 33.Nd5 Rd5 34.Qc6 Kd8 35.Ra8 Ke7 36.Re8) 25...Nf2?? (better is 25...Qd6 26.Qa2 Nc5+– (26...Nf2?? 27.Qa6 Kb8 28.Qb7)) 26.Ra8 (26.Qf5 Qe6 27.Ne6 Nh3 28.Kh2 Rd2 29.Kh3 Ra2 30.Nd4 Re6 31.Rf7 Rh2 32.Kh2 Kb8 33.Qe6 h6 34.Qe8) 26...Kb7-+ 27.Rd8 Rd8 28.Kf2 g5 (28...Kb8!? 29.Qe4 Qf6 30.Qc4 Rd2 31.Ke1 Rc2-+) 29.Qe4-/+ Kb8 30.Qe5 Qd6 31.Qd6? (better is 31.Qg5 f6 32.Qg7-/+) 31...Rd6-+ 32.hg5 Rd2 33.Kf3 Rc2 (better is 33...Kc7-+) 34.Nd5-/+ Rb2 (34...Kb7 35.Ke4-/+) 35.Nb6 Rb5 36.Nc4 Rg5 37.Nd6 (37.Kf4 Rg6 38.Ne5-/+) 37...f6 (better is 37...Rd5!? 38.Ne4 Rf5 39.Ke2 Kc7-/+) 38.Kf4= Kc7 (38...Rh5 39.Ne8=) 39.Ne4 (39.Ne8 Kd8 40.Nf6 Rg7=) 39...Rg6 40.g4 (40.Kf5 Kd8 41.Ke6 Rg8 42.Kf6 Re8=) 40...Kc6 (40...Kd7!?-/+) 41.Kf5= Attacking the isolated pawn on f6 41...Kd5?? (better is 41...Rg7=) 42.Nf6+/– Rf6?? (better is 42...Kd6+/–) 43.Kf6+– Ke4 44.Kg7 (44.c4 h6 45.Ke6 Ke3+–) 44...Ke3 45.Kh7 (better is 45.c4 Kf4 46.c5+–) 45...Kf4= 46.c4 Kg4 47.c5 Kf5 48.c6 Ke6 ½–½. Benreguia,Frederic – Bromo,Alexis, FICGS, 2013.

4.b5 Bd6!? 5.c4-+.

4.Qc2 Bd6 5.e3 0-0 6.Ba3 Qe7 7.Bd3 e4 8.Be2 Bf5 9.b5 c5 10.bc6 Nc6 11.Bd6 Qd6 12.Na3 a6 13.Bd1 (13.Qb2 b6!-/+) 13...Ne5-+ 14.Be2 Nfd7 15.Qb2 (15.Qd1 Nc5-+) 15...Nc5 16.Kf1 (16.Qc2 Ned3 17.Kf1 Bd7-+) 16...Na4 17.Qb4 Nc5 18.Nc2 b6 19.Ra6 (19.Qb1-+) 19...Ra6 20.Ba6 Nc6 21.Qb5 (21.Qb2 Na6 22.Qb6 Nc5-+) 21...Ra8 (21...Na6?! 22.Qa6 Ne5 23.Nb4-/+) 22.Bb7 Nb7 23.Qb6 Nc5 24.Qb1 Ne5 25.Nd4 (25.Ne2-+) 25...Qa6 26.Nge2 Qa1 27.Qc1 Ncd3 (27...Ncd3 28.Nb3 Nc1 29.Na1 Ra1-+) 0-1. eviledna - dewil (2590), ChessWorld.net, 2012. (=1.a4 d5 2.c3 e5 3.b4 Nf6)

4.d3 a5 5.b5 Bd6 6.Ba3 0-0 7.d4 (7.Nf3 Re8-/+) 7...e4 (7...Re8!? 8.Qb3-+) 8.e3-/+ Nbd7 (8...Qe7 9.Ne2-/+) 9.Bd6 cd6 10.Be2 Nb6 11.Nd2 (11.h4 Ne8-/+) 11...Be6 (11...Bf5 12.Qc2-/+) 12.Qc2 Qc7 13.Ra2 (13.h4 Rac8-/+) 13...Rfc8 (13...Bf5 14.Bd1-/+) 14.Ra3 Bg4 (14...Qd7!?-/+) 15.Bg4=+ Ng4 16.Nh3 Qe7 17.0-0 Rc7 18.Nf4=+ Rac8 19.h3 Nf6 20.f3 Nc4-/+ 21.Nc4 Rc4 22.Qd2 g5 23.Ne2 Re8 24.Ng3 h6 25.Nf5 Qd7 26.Nh6 Kg7 27.Ng4 Nh5 28.Qf2+/– f5 29.fe4+– fg4 30.hg4 de4 31.gh5 Qe6 32.d5! Qe7 33.Qf5 Rg8 34.Qg6 Kh8 35.Qh6 Qh7 36.Qf6 Qg7 37.Qd6 Rc3 1–0. guest1149 – guest21, ICC, 2003.

4.d3 c5 5.bc5 Bc5 6.d4 ed4 7.cd4 Bb4 8.Bd2 Nc6 9.Bb4 Nb4 10.e3 Bf5 11.Bb5 Nd7 12.Na3 Qa5 13.Qd2 Rc8 14.Nf3 Rc2 15.Nc2+/– Nc2 16.Ke2 Qd2 17.Nd2 Na1 18.Ra1 0-0 19.Rc1 a6 20.Bd7 Bd7 21.a5 Rc8 22.Rc8 Bc8 23.Nb3 Kf8 24.Nc5 Ke7 25.Kd2 Kd6 26.Kc3 Kc6 27.Kb4 b5 28.ab6 Kb6 29.Na4 Kb7 30.Kc5 Bd7 31.Nc3 Bc6 32.Nd5 Bd5 33.Kd5 Kb6 34.Kd6 a5 35.d5 a4 36.Ke7 a3 37.d6 a2 38.d7 a1Q 39.d8Q Kc5 40.Kf7 Qa2 41.Kg7 Qa7 42.Kf8 Kc6 43.Qf6 Kd5 44.Qf7 (44...Qf7 45.Kf7+–) 1–0. orane (2195) – BARABALA, Live Game Caissa's Web, 2004.

4.d3 d4 5.cd4 (better is 5.Bd2!?-/+) 5...Qd4-+ 6.Ra3? (better is 6.Ra2 Bb4 7.Bd2-+) 6...Bb4 7.Bd2 Ba3 8.Na3 Ng4 9.e3 Qd6 10.Nf3?? Qa3 11.h3 Nf6 12.h4 Nc6 13.Rh3 Bh3 14.gh3 0-0 15.h5 Nh5 16.Ng5 Rad8 17.Ne4 Nb4 18.Qb1 Nd3 19.Bd3 Qd3 20.Qd3 Rd3 21.Bb4 Rfd8 22.Nc5 Rd1 23.Ke2 Rb1 24.Bc3 b6 25.Nb7 Rd7 26.Kf3 f6 27.a5 Rb3 28.Be1 c6 29.ab6 Rb7 30.ba7 Ra7 31.h4 Ra4 32.Kg2 f5 33.Bd2 Ra2 34.Be1 Re3 35.Kg1 Re1 36.Kg2 Ree2 37.Kf3 Rf2 38.Ke3 Rh2 39.Kd3 Ra4 40.Kc3 Rh3 41.Kb2 Rg4 42.Kc2 Rg2 43.Kd1 Rh1 0–1. cojack – ghorn (2025), net–chess.com, 2003.

4.d3 Bd6 5.Bb2 Bf5 6.Nd2 Nbd7 7.g3 0-0 8.Bg2 c6 (8...a5 9.b5-/+) 9.f3 (9.Ngf3 Re8+=) 9...Re8 10.e4 de4 (10...Be6 11.a5-/+) 11.de4 Bg6 (11...Be6 12.Bh3-/+) 12.Nc4+= White prepares a5 12...Bc7 13.Ne2 Nb6 (13...Qe7 14.Qb3+=) 14.Nb6 Bb6 (14...Qd1 15.Rd1 ab6 16.g4=) 15.a5= Qd1 (15...Bc7 16.Qd8 Rad8 17.Bc1=) 16.Rd1 Bc7 17.0-0 Rad8 18.Rd8 Rd8 19.Rb1 Rd2 (19...Kf8 20.Kf2=) 20.Kf1 Nd7 21.f4?? (21.Ke1!? Rd6 22.Bh3=) 21...ef4 (21...Bh5 22.Ng1 ef4 23.gf4 Bf4 24.Bf3 Rh2 25.Bh5 Rh5 26.Rd1-+) 22.Nf4? (better is 22.gf4 Nf6 23.f5-/+) 22...Bf4-+ 23.gf4 Nf6?? (better is 23...Rg2 24.Rd1 Rb2 (24...Be4?! 25.Rd7 h5 26.Bc1-/+) 25.Rd7 f6-+) 24.f5= Bh5 25.c4 (25.Bc1!? Rc2 26.Bg5=) 25...Ng4-/+ 26.Bh3?? (26.Kg1!? Ne3 27.Bf1-/+) 26...Ne3 (better is 26...Nh2 27.Kg1 Nf3 28.Kf1 Rh2-+) 27.Kg1-/+ Nc4 28.Bc3?? (better is 28.Ba1-+) 28...Rd3 29.Rc1 Rh3 30.Bg7 Nd2 (30...Na5 31.Bf6 Nb3 32.Rc2-+) 31.Bd4 (31.Bh6 Ne4 32.a6 ba6 33.Rc6 f6 34.Rc8 Kf7 35.Rc7 Ke8 36.Ra7 Rb3 37.Ra8 Kd7 38.Ra7 Kc8 39.Ra6 Rb4-+) 31...Nf3 32.Kf2 (32.Kg2 Rh2 33.Kg3-+) 32...Nd4 33.f6 (33.Rg1 Kf8 34.Rg2 b6-+) 33...Rh2 34.Ke3 Nc2 35.Kf4 Nb4 36.Rb1 (36.Kg3 Rc2 37.Rc2 Nc2-+) 36...Nd3 (36...c5 37.Rg1 Bg6 38.Rd1 Rf2 39.Ke5 Nc6 40.Kd5 Rf6 41.Kc5 Be4 42.Re1-+) 37.Kg3 (37.Ke3 Nb2-+) 37...Rb2 38.Rg1 Bg6 39.Rd1 (39.Kf3 Rb4-+) 39...Be4 40.Kh4 Rh2 41.Kg3 Rg2 42.Kh4 h6 43.Rb1 Nf2 44.Rb7 (44.Rb3 Rg4 45.Kh5 Kh7 46.Rb7 Bg6) 44...Bg6 (44...Rg4 45.Kh5 Bf3 46.Rb8 Kh7 47.Rh8 Kh8 48.a6 Rg3 49.Kh6 Rg6) 45.Rb4-+ c5 46.Rf4 Ne4 (46...Be4 47.Re4 Ne4 48.Kh3 Rg3 49.Kh2 c4 50.Kh1 c3 51.Kh2 c2 52.a6 h5 53.Kh1 c1Q 54.Kh2 Qg1) 47.Kh3 Rg3 48.Kh2 h5 (better is 48...Ra3 49.Kg2-+) 49.Re4 Be4 50.Kg3 0–1. giraira – debussy13, gameknot.com, 2018. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.d3 Bd6 5.Bd2 0-0 6.g3 e4 7.e3 (7.Bg5 h6 8.Be3 a5-/+) 7...c5 (7...Nc6 8.Qc2-/+) 8.bc5 Bc5 9.d4 Bd6 10.Bg2 (10.c4 Nc6-/+) 10...Nc6-+ 11.Ne2 Nd7 (11...Re8 12.0-0-/+) 12.0-0 (12.c4 dc4 13.Be4 Na5+=) 12...f5 (12...Nf6 13.Bc1-/+) 13.f4 (13.f3 Nf6-/+) 13...b6 (13...Nb6 14.Na3-/+) 14.Na3 Ba6 (14...Nf6 15.Bc1-/+) 15.Nb5+= Nf6 16.Nd6 (16.c4 dc4 17.Rc1 Be7+=) 16...Qd6-/+ 17.h3 Bd3 18.Rf2 a6 19.Nc1 (19.Bc1 Qc7-/+) 19...Bc4 20.Kh2 h6 21.Ne2 b5 (21...Na5 22.Nc1-/+) 22.Ng1 (22.Bc1 Rfb8-/+) 22...b4 (22...Rfb8 23.ab5 Rb5 24.Ne2-/+) 23.Bf1 (23.cb4 Rab8 24.b5 ab5 25.ab5 Rb5 26.Bc1-/+) 23...Bd3 (better is 23...b3!?-+) 24.Bd3+= ed3 25.cb4 Nb4 (25...Ne4!? 26.Rg2 Rab8=) 26.Bb4+= Qb4 27.Qd3 Ne4 28.Rc2 Rac8 29.Rac1 Rc3?? (better is 29...Rc2 30.Qc2 Rb8=) 30.Rc3+– Nc3 31.Qc3 Qa4 32.Rc2 (32.Qc6 Qc6 33.Rc6 Ra8+–) 32...Qe8 33.Nf3 Qe4 34.Ne5 g5 (34...Rb8+–) 35.Qc6 Rb8 36.Qg6 (36.Qg6 Kh8 37.Nf7) 1–0. giraira – bayoukid07, gameknot.com, 2018. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.d3 Bd6 5.e3 0-0 6.Ba3 Bg4 (6...a5 7.b5-/+) 7.f3 (7.Be2 Be2 8.Ne2 Re8=+) 7...Bh5 (7...Be6 8.Ne2-/+) 8.g4 Bg6 9.Nh3 (9.h4 h5-/+) 9...Nbd7 (9...d4 10.e4-/+) 10.f4 ef4 11.ef4 Re8 12.Be2? (better is 12.Kd2 h6 13.f5-/+) 12...Ng4-+ 13.Ng5 Bf4 14.Rf1 Qg5 15.Qb3 Bd3 16.Ra2-+ Bg3! 17.Kd1 Ne3 18.Kd2 Nf1 19.Kd3 Ne5 20.Kd4 Qe3 21.Kd5 Rad8 0–1. bjhaskins – chimpaizinho, net–chess.com, 2003.

4.d3 Be6 5.Nf3 Bd6 6.d4 e4 7.Ng5 (7.Ne5 Nbd7 8.Nd7 Nd7-/+) 7...Bf5 8.Qc2 (8.a5 0-0-/+) 8...Qd7 9.Qb3 0-0 10.a5 Nc6 (10...h6 11.Nh3-/+) 11.b5 (11.Nh3 Rae8-/+) 11...Ne7 12.a6 b6 (12...Rab8 13.c4 dc4 14.Qc4 ba6 15.Ra6 Rb5 16.Nc3-+) 13.c4 (13.Nh3 Ng4-/+) 13...h6-+ 14.Nh3 dc4 15.Qc4 Be6 16.Qa4 Ned5 17.Ng1 (17.e3 Rac8-+) 17...Rac8 (17...e3 18.Be3 Ne3 19.fe3-+) 18.e3 c5 19.Bb2 cd4 20.Qd4 Rc2 21.Ba3? Qc7 22.f4 Rc1! 23.Bc1 Qc1 24.Ke2 Bc5 25.Na3 Nf4! 26.ef4 Bg4 27.Kf2 Bd4 28.Kg3 Qe3 29.Kh4 g5 30.fg5 hg5 0–1. guest7217 – guest4565, ICC, 2005.

4.d4 ed4 5.Qd4 Nc6 6.Qd1 g6 (6...Ne4 7.Nf3-/+) 7.Bb2 Bf5 8.Nd2 Bg7 9.h3 (9.Ngf3 Ne4+=) 9...0-0 (9...Ne4 10.Ne4 Be4 11.Qb3-/+) 10.g4+= Be4 (10...Be6+=) 11.Ne4?? (better is 11.f3!?+=) 11...de4 (11...Ne4!? 12.Bg2 Nb4-+) 12.Qc2 Re8 13.Rd1 Qe7 14.e3 (14.g5 Nh5 15.Bc1 Rad8 16.Rd8 Rd8-/+) 14...Rad8-/+ 15.Ne2 Nd5 16.Nd4 (better is 16.Qc1-/+) 16...Ndb4?? (better is 16...Bd4 17.cd4 Qb4 18.Ke2 Qa5-+) 17.cb4= Nb4 18.Qb3 Qc5 (18...c5 19.Bc3 Nd3 20.Bd3 cd4 21.Bb4=) 19.Rc1 (19.Bc4!? Nd5 20.Nb5+–) 19...Qb6+= 20.Bg2?? (better is 20.Bc4 Nd3 21.Bd3 Qb3 22.Nb3 Bb2 23.Rc2 Rd3 24.Rb2+/–) 20...Nd3-+ 21.Ke2 Nc1 22.Bc1 (22.Rc1 Bd4 23.Qb6 Bb6-+ (worse is 23...ab6 24.Bd4 c5 25.Bf6+/–)) 22...Bd4 23.Qb6 Bb6 (23...cb6?! 24.ed4 Rd4 25.Rd1 Ra4 26.g5-+; 23...ab6?! 24.ed4 Rd4 25.Bf4-/+) 24.h4 c5 25.h5 c4 0–1. eechezznut – bobbycarlsberg, gameknot.com, 2017. (=1.a4 d5 2.b4 e5 3.c3 Nf6 4.d4 ed4 5.Qd4 Nc6)

4.d4 ed4 5.Qd4 Nc6 6.Qe3 Be6+=.

4.d4 e4 5.Bf4 Bd6 6.Bd6 Qd6 7.e3 0-0 8.a5 Nc6 9.Ne2 Bg4 10.Qc2 b6 11.Nf4 ba5 12.b5 Ne7 13.h3 Bd7 14.c4 c6 15.c5 (15.bc6 Nc6 16.Qc3 Rfc8=+) 15...Qc7 (15...Qb8 16.Nc3=+) 16.Nc3 Rfb8 17.bc6 Bc6 18.Be2 Rb4 19.0-0 Rab8 20.Rfb1 Nf5 (20...g5 21.Nh5 Nh5 22.Bh5=+) 21.Nh5 (21.Qd2 Rb1 22.Rb1 Rb1 23.Nb1 a4=+) 21...Nd7 (21...Nh5 22.Bh5 Ne7 23.Be2=+) 22.Qa2 g6 (22...Ne7 23.f3=) 23.Rb4 ab4 24.Nd5 Bd5? (better is 24...Qd8 25.Nhf4 g5=) 25.Qd5+– gh5 26.Qf5 b3 27.Bc4 Nf8 28.Rb1 a5 29.Rb3 Rb3 30.Bb3 Qb7 31.c6! Qb3 32.c7 Qe6 33.Qe6 Ne6 34.c8Q (34...Kg7 35.Qb8+–) 1–0. Trkn – Etruscan, ICC, 2004.

4.d4 e4 5.Bf4 Bd6 6.Bd6 Qd6 7.e3 Bg4 8.Qc2 Nbd7 9.Nd2 0-0 10.c4 dc4 11.Bc4 Be6 12.Be6 fe6 13.Nh3 e5 14.Qc4 Kh8 15.Rc1 ed4 16.Qd4 Rac8 17.Qd6 cd6 18.Ke2 d5 19.Nf4 (19...Ne5 20.f3+=). orane (2215) – zyx, 2004.

4.d4 e4 5.Bg5 Be7 6.e3 h6 7.Bf6 Bf6 8.Ne2 0-0 9.Ng3 Nd7 10.c4 c6 11.Qb3= dc4 12.Bc4+= a6 13.Ne4+/– Be7 14.0-0 b5 15.ab5+– cb5 16.Bb5 Bb7 17.Bd3 Be4 18.Be4 Rb8 19.Ra6 Rb4 20.Qd3 Bf6 21.Nd2 Qc8 22.Nf3 Rc4 23.Bd5 Rc3 24.Qb5 Nb8 25.Ra8 Qc7 (25...Qc7 26.Qb7 Qb7 27.Bb7 Rc7+–). hasant (1915) – dennism (2100), net–chess.com, 2008.

4.e3 c5 5.Bb5 Bd7 (5...Nc6 6.bc5 Bc5 7.d4+=) 6.Bd7 (6.bc5 Bc5 7.d4 ed4 8.ed4 Be7=) 6...Nbd7+= (worse is 6...Kd7 7.bc5 Bc5 8.d4=) 7.b5 (7.bc5 Bc5 8.d4 Bd6+=) 7...Bd6 8.Ne2 0-0 9.0-0 e4 10.Na3 b6 (10...Qc7 11.h3-/+) 11.c4 Qc7 (11...Ne5 12.Bb2-/+) 12.f4 (12.Ng3!?-/+) 12...ef3!-+ 13.Rf3 (13.Rf3 Ne5 Double attack (13...Ne5 Decoy); 13.gf3 Bh2 Combination) 13...Bh2 14.Kh1 Ne5 15.Rh3?? (15.Rf6 gf6 16.Nc3 dc4 17.Qh5-/+) 15...Nd3 16.Qf1 Be5 (16...Ng4 17.g3 Qe5 18.Rh2 Nh2 19.Bb2 Nf1 20.Be5 Nd2 21.Bc7 Nc4 22.Nc4 dc4 23.a5-+) 17.Ra2 (17.Nc3 Ng4 18.Nd1 dc4 19.Rb1-+) 17...Ng4 18.Nf4 (18.Qf5 Ngf2 19.Kg1 Nh3 (19...Nc1?? 20.Qh7) 20.gh3 Nb4-+) 18...Bf4 (18...Nf4?! 19.ef4 Bf4 20.cd5-+) 19.ef4 Ngf2 (better is 19...Rae8!? 20.Nc2 (20.Rd3?? Qf4 21.Qg1 Re1 22.Rg3 Qg3 23.Qe1 Qe1) 20...Ngf2 21.Kg1 Nh3 22.gh3 Nf4 23.Ra3 Ne2 24.Kg2 Nc1 25.Ne3-+) 20.Kg1 Nh3 21.gh3 Nc1 22.Qc1 Qf4 23.Qc3 (23.Qf1 Qg3 24.Qg2 Qb3-+) 23...d4 (better is 23...Rae8 24.d3 Qg3 25.Kf1-+) 24.Qd3 Rfe8 25.Ra1 Re6 (25...Re5 26.Rf1 Rg5 27.Kh1-+) 26.Rf1 Rg6 (better is 26...Qg5 27.Kh1-+) 27.Kh1 (27.Qg6 Qf1 (worse is 27...fg6 28.Rf4 g5 29.Rf5+/–) 28.Kf1 hg6-+) 27...Qg3 28.Qg3 Rg3 29.Nc2 Rh3 30.Kg2 Rd3 31.Rf2 g6 (31...a6 32.Re2-+) 32.Ne1 (32.Kh2 a6-+) 32...Ra3 33.Nf3 Ra4 34.d3 Ra3 35.Ne5 f5 36.Rf3 (36.Re2 Re8 37.Kf2 g5-+) 36...Re8 37.Nc6 Re2 38.Kg3 Re3 39.Re3 de3 40.Ne5 e2 (better is 40...g5 41.Kf3 f4 42.Ng4-+) 41.Kf2 Ra2 42.Nf3 Kg7 43.Ng1 (43.Ng5 h5 44.d4 cd4 45.Ne6 Kf6 46.Nd4 h4-+) 43...Rd2 44.Ne2 Rd3 45.Nf4 Rc3 0–1. giraira – jollybaker, gameknot.com, 2018. (=1.c3 Nf6 2.b4 e5 3.a4 d5)

4.e3 Bd6 5.Na3 a5 6.b5 Nbd7 7.Nh3 Nc5 8.d4 Nce4 9.f3 Nc3-+ 10.Qc2 Bh3 11.Qc3?? Bb4 12.Qb4 ab4 13.Nc2 b3 14.Nb4 Bf5 15.Bb2 Qd6 16.Nd3 Bd3 17.Bd3 Qb4 18.Ke2 e4 19.Bb1 Ra4 20.Ra4 Qb5 21.Kf2 Qa4 22.Rc1 Kd7 23.h3 Ra8 24.g4 Qb4 25.Rd1 Ra2! (25...Ra2 26.Ba2 ba2-+) 0–1. Rheindt,Stefan (1775) – Duchene,Klaus (2170), remoteschach.de, 2010.

4.e3 Bd6 5.Bb5 c6 6.Be2 Bf5 (6...0-0 7.d4-/+) 7.d3 (7.d4 Nbd7-/+) 7...0-0 (7...a5 8.b5-/+) 8.a5 (8.Nf3 Qc7-/+) 8...a6 (8...d4 9.Nf3 dc3 10.0-0-/+) 9.d4 (9.Nf3 Qc7-/+) 9...e4 (9...Nbd7 10.Nf3-/+) 10.h3 Nbd7 11.Nd2 (11.Bf1 Rb8-/+) 11...Qc7 (11...Be6 12.Bf1-/+) 12.Nf1 (12.Qc2 Be6-/+) 12...h6 (12...Rad8 13.h4-/+) 13.g4 Be6 14.Kd2? (14.h4!?-/+) 14...b5 (14...Rab8 15.h4-+) 15.Ke1 Ne8 16.Kd2 Be7 17.Kc2 f5 18.gf5 Rf5 19.Ng3 Rf2-+ 20.Nh5 Bf7 21.h4?? Bh5 22.Qe1 Re2 23.Ne2 Nef6 24.Ng3 Rf8 25.Nf5 Rf7 26.Rg1 Ng4 27.Ne7 Re7 28.Qd2 Rf7 29.Kb3 Rf2 30.Qe1 Qh2 31.Rh1 Qg2 32.Rg1 Qf3 33.Ra2 Ndf6 34.Ka3 Ra2 35.Ka2 Nf2 36.Qf1 N6g4 37.Qe1 Nd3 38.Qd2 Nc1 39.Qc1 Qf2 40.Kb1 Ne3 41.Re1 Be2 42.Qd2 Bd3 43.Kc1 Qd2 44.Kd2 Nf5 45.h5 Nh4 46.Re3 Nf5 47.Rh3?? Bf1-+ 48.Rh2 e3 49.Ke1 Ng3 50.Rh4 Kf7 51.Rf4=+ Ke6 52.Rf1?? Nf1-+ 53.Kf1 Kf5 54.Ke2 Kf4 55.Ke1 Kf3 56.Kf1 Kg4 57.Ke2-+ Kh5 58.Ke3 Kg4 59.Kf2 g5 60.Kg2 h5 61.Kf2 Kf4 62.Kg2 g4 63.Kf2 h4 64.Kg2 h3 65.Kh2 Kf3 66.Kh1 g3 67.Kg1 g2 68.Kh2 Kf2 69.Kh3 g1R 70.Kh4-+ Rg3 (71.Kh5 Rc3-+) 0–1. bane – Caligula, mySchach.de, 2005.

4.e3 Bd6 5.d3-/+.

4.e3 Bd6 5.d4 0-0 6.de5 Be5 7.Nf3 Bd6 8.a5 c6 (8...Nbd7 9.Be2=+) 9.Bd3 Nbd7 10.Nbd2 Ne5 (10...Qe7 11.Bb2=) 11.Ne5 Be5 12.Qc2 Qc7 13.Nf3 Bd6 14.h3 Bd7 15.0-0 Rae8 (15...b5 16.ab6 ab6 17.Bb2=) 16.Bb2 h6 (16...Be6 17.Rfd1=) 17.c4 Ne4 (better is 17...dc4 18.Bc4 Ne4+=) 18.c5+– Be7 19.Be4 de4 20.Be5 (< 20.Qe4 Bc5 21.Be5 Bd6 22.Bd6 Qd6+= (22...Re4?? 23.Bc7 Rfe8 24.Bd6+–)) 20...Qc8 21.Qe4 Bf6 22.Qf4 Re6 23.Rad1 Rfe8 24.Bd4 Bg5 25.Ng5 hg5 26.Qg3 Rh6 27.f3 Ree6 28.Rd2 Reg6 29.Rfd1 g4 30.fg4 Bg4 31.hg4 Rg4 32.Qf3 Rhg6 33.Be5 Qe6 34.Bf4 (34...Rh4 35.Rd6+–) 1–0. mrkt – nogumo, myChess.de, 2005.

4.e3 Bf5 5.d3 d4 (5...Bd6 6.Nf3-/+) 6.e4 (6.Qf3 Bc8 7.b5 a6+=) 6...Be6-/+ 7.Ba3 Be7 (7...dc3 8.Nc3 Nc6 9.Rb1-/+) 8.c4 (8.Nf3 Bg4+=) 8...0-0 9.Be2 b6 (9...a5 10.b5+=) 10.Nf3+= Nfd7 11.Nbd2 f5 12.h3 f4 (12...Qe8 13.ef5 Bf5 14.g4+=) 13.Nh2 (13.0-0 a5 14.b5 Ba3 15.Ra3 Qe7+=) 13...c5+= 14.b5 a6 15.0-0 Nf6 16.Bg4 (16.Nhf3 Qd6=) 16...Bg4 (16...Ng4!? 17.Ng4 Qd6+=) 17.Ng4= Ng4 18.Qg4 ab5 (18...Qd6 19.Rfb1=) 19.ab5+= Nd7 20.g3 (better is 20.Bb2!? Ra1 21.Ra1+=) 20...Rf6 21.h4? (better is 21.Bb2 Ra1 22.Ra1 fg3 23.fg3= (23.Qg3?? Rg6-+)) 21...Rg6-+ 22.Qh3 Bh4 23.g4 Rh6 (23...h5 24.Qf3-+) 24.Qg2 Rg6 25.f3?? (25.Qh3 h5 26.f3-+) 25...Bg3 (25...h5 26.Bb2-+) 26.Rfd1 (26.Bb2 Ra1 27.Ra1 h5-+) 26...Rh6 (26...h5 27.Kf1 hg4 28.Ke2-+) 27.Nf1 Qh4 28.Ng3 fg3 (28...Qg3?! 29.Qg3 fg3 30.Kg2+=) 29.Kf1?? (better is 29.Bb2 Rf8 30.Rf1-+) 29...Qh1 30.Qg1 (30.Qh1 Rh1 31.Kg2 Rd1 32.Rd1 Ra3 33.Kg3 Nf8-+) 30...Rh2 (better is 30...Qf3 31.Ke1 Rh1-+) 31.Qh1 Rh1 32.Kg2 Rd1 33.Rd1 Ra3 34.Kg3 g5 (34...Nf8 35.Rh1-+) 35.Rd2 h6 36.Kf2 Nf6 37.Ke2 Ne8 38.Ra2 0–1. giraira – fnelson4297, gameknot.com, 2017. (=1.c3 e5 2.b4 Nf6 3.a4 d5)

4.f3 b6 5.g3 (5.a5 Bd6-/+) 5...h6 (5...Bd6 6.d4-/+) 6.Bg2 Bb7 (6...Bd6 7.d3-/+) 7.Bb2 e4 (7...Nbd7 8.Nh3-/+) 8.e3 ef3 (8...Nc6!?+=) 9.Nf3= Bd6 10.0-0 0-0 11.Re1 (11.Nh4 Nc6=) 11...c5 (11...Re8 12.Na3=) 12.bc5 Bc5 13.d4 (13.Nd4 Nc6=) 13...Bd6+= 14.Ba3 Ba3 15.Na3 a6 16.Ne5 Nc6 17.Nc6 Bc6 18.Rb1 Rb8 (18...Re8 19.c4+=) 19.c4 (19.Qd3 Qe7 20.c4 dc4 21.Nc4 Bg2 22.Kg2 Rfd8=) 19...Ne4 20.Qd3 f5 (20...Re8!?=) 21.cd5+= Bd5 22.Qa6 Nd2 23.Bd5 (better is 23.Rb2 Bg2 24.Rd2=) 23...Qd5-/+ 24.Rb5?? (24.Qb5 Qe4+=) 24...Qe4 (24...Qa2 25.Re2 Qa3 26.Kg2-+) 25.Re2? (25.Kf2 f4 26.gf4 Qf3 27.Kg1 Rf6-+) 25...Nf3?? (better is 25...f4 26.Rb3 Nf3 27.Kf1 fg3 28.Qc4 Kh7 29.hg3 Nd4 30.Ke1 Rf1 31.Kd2 Nb3 32.Kc3 Rc1 33.Rc2 Qe3 34.Kb2 Na5-+) 26.Kh1?? (better is 26.Kf2 Nh2 27.Kg1-+ (27.Rb6?? Rb6 28.Qc4 Kh7-+)) 26...Nd4 (better is 26...Rfc8 27.Rb1 Nd2 28.Kg1 Nb1 29.Nc2 Rc2 30.Rc2 Qc2 31.Qf1-+) 27.Rg2 Nb5 28.Nb5 (28.Qb5 Rfc8 29.Qb3 Kh7 30.Nc2-+) 28...Rbc8 29.h3 Rc2 (29...Rc2 30.Qb7 Qb7 31.e4 Qe4 32.Kh2 Qg2) 0–1. giraira – villiman, gameknot.com, 2018. (=1.c3 d5 2.b4 e5 3.a4 Nf6)

4.f3 Bd6 5.e3-/+.

4.Nf3 Bd6 5.g3 0-0 6.Bg2 Bg4 7.h3 Bh5 8.d3 Nbd7 9.a5 Re8 10.0-0 e4 11.de4 de4 (worse 11...Re4 12.g4 Bg6 13.Nh4+/-) 12.Nh4 Bg6 (12...Be5!?=) 13.Ng6+= hg6 14.Na3 Qe7 15.Qb3 c6 16.Bg5 Rad8 17.Rfd1 Bc7 18.Nc2 Qe6 (better 18...Be5!?+=) 19.Qe6+- Re6 20.a6 b6 21.Nd4 Rd6 22.Bf4 (22.Bf4 Rd4 23.Rd4 (23.Bc7?! Rd1 24.Rd1 Rc8+/-) 23...Bf4 24.gf4+-) 1-0. Panza (2720) - bobby fissure (2095), ChessWorld.net, 2019.

4.Nf3 Bd6 5.h3 0-0 6.e3 Re8 (6...e4 7.Nd4-/+) 7.Bb5 (7.Ba3 e4 8.Nd4 c6-/+) 7...Bd7 8.Be2 a6 9.Bb2 h6 (9...a5 10.b5-/+) 10.0-0+= e4 11.Ne1 Nc6 12.f4 (12.d4 ed3 13.Nd3 Qe7+=) 12...ef3 13.Bf3 (13.Nf3 Ne4 Combination; 13.Bf3 Qe7 Combination; 13.Rf3 Ne4 Combination; 13.gf3 Bh3 Deflection) 13...b5 (13...Ne5 14.a5-/+) 14.a5 (14.ab5 ab5 15.Ra8 Qa8=) 14...Ne4 (14...Ne5 15.Na3+=) 15.Be4 (15.d3 Nf6 16.Nc2 Qe7+=) 15...Re4 (15...de4 16.Qh5 Be6 17.Na3-/+) 16.Qh5 Re5 (better is 16...Ne5!?+=) 17.Qf7+= Kh8 18.c4 Rg5 (better is 18...Re7 19.Qd5 Nb4+=) 19.Rf6?? (better is 19.Nf3 Rg3 20.c5 (20.cd5 Nb4 21.Be5 Be5 22.Ne5 Bh3 23.Ng6 Kh7+=) 20...Bh3 21.Rf2+– (21.cd6?! Rg2 22.Kh1 Qd6+/–)) 19...Be5 (19...Ne5 20.Rh6 gh6-/+) 20.Rc6-/+ Bc6 (20...Bb2 21.Ra2 Bc6 22.cb5 Bb5 23.Rb2-/+) 21.Be5+= Re5 22.Nf3 (better is 22.cb5!? Bb5 23.Nf3+=) 22...Re7-+ 23.Qg6 Bb7?? (better is 23...Be8!? 24.Qf5 dc4-+) 24.c5 (24.cb5 ab5 25.a6 c6=) 24...c6 (24...Qg8 25.Nc3+=) 25.Nc3= Qe8 26.Re1?? (better is 26.Qd3=) 26...Qg6-+ 0–1. giraira – hblackef, gameknot.com, 2018. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.Nf3 e4 5.Nd4 c5 6.bc5 Bc5 7.Ba3 Qe7 8.Bc5 Qc5 9.Na3 Nc6 10.Nab5 a6?? (better is 10...0-0=+) 11.Nc7+– (11...Kf8 12.Na8+–) 1–0. Fritz 5.32 – NN, 2003.

4.g3 Be6 5.Bg2 Nbd7 6.e3 (6.Nf3 a5 7.b5 Bd6+=) 6...c6 7.Bh3 Qe7 8.Ba3 Bh3 9.Nh3 Qe6 10.Ng5 Qf5 11.Nf3 h5 (11...e4 12.Nh4 Qh3 13.f4-/+) 12.h3 g5 (12...Qd3 13.a5-/+) 13.b5 Ba3 14.Na3 Nc5 15.bc6 (15.Ke2 Nfe4 16.bc6 g4-+ (16...bc6?! 17.Qg1-+)) 15...bc6 16.Qc2?? (better is 16.0-0-/+) 16...Qf3-+ 17.Rf1 (17.Rh2 e4-+) 17...e4 18.d4 ed3 19.Qd2 (19.Qd1 Qg2 20.Nb1-+) 19...Nfe4 (19...Nfe4 20.Qd1 d2 21.Qd2 Nd2 22.Kd2 Nb3 23.Kd3 Na1 24.Ra1 Qf2-+) 0–1. rhometal (2175) – gregorgysi (2570), net–chess.com, 2016.

4.h3 Bd6 5.e3 0-0 6.Be2 b6 7.Nf3 c5 8.Ba3 (8.bc5 bc5 9.d4 e4-/+) 8...Nc6 (8...e4 9.Nh2-/+) 9.b5 Ne7 10.0-0 Bc7 11.Ne1 (11.d3 e4 12.de4 de4 13.Qd8 Rd8+=) 11...Ng6 (11...Qd6 12.Bb2-/+) 12.d3 Be6 13.Nd2 Qd7 14.g4 (14.Nc2 Qd6-/+) 14...Rac8 (14...Qd6 15.Ng2-/+) 15.Ng2 Bb8 (15...Qd6 16.f4-/+) 16.d4 e4 17.f4 ef3 18.Bf3 (18.Rf3!? Ne4 19.Ne4 de4 20.Rf1-/+) 18...Qd6-+ 19.Nf4 Nf4 20.ef4 Qf4 21.Rf2 (better is 21.Qe2-+) 21...Qg3 22.Rg2 Qh3 23.dc5 bc5 24.Ra2 (24.Qe2 Bf4 25.g5 Ng4-+) 24...d4 25.Rc2 (25.Ra1 dc3 26.Nf1 Be5-+) 25...d3 (25...Nd5 26.cd4 Ne3 27.Qc1 Ng2 28.Bg2 Bh2 29.Kh1-+) 26.Rb2 Rfd8 27.Nf1 Be5 (27...Bd5 28.Rbf2 Ne4 29.Qd3-+) 28.Rbd2?? (28.Rh2 Bb3 29.Rh3 Bd1 30.Bd1 Bc3 31.Rbh2 Bd4 32.Kg2-/+) 28...c4 (better is 28...Bb3 29.Qb3 Qf3-+) 29.Qe1?? (better is 29.Rh2 Bh2 30.Rh2 Bg4 31.Rh3 Bh3 32.Be7=) 29...Bc3-+ 30.Rh2 0–1. giraira – rtfen, gameknot.com, 2017. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.h3 Bd6 5.Nf3-/+.

4.h3 Be7 5.g3 a6 (5...Nbd7 6.Bg2-/+) 6.Bg2 e4 7.e3 (7.d3 a5 8.b5 0-0+=) 7...Nbd7-/+ 8.Ne2 Ne5 9.0-0 0-0 10.Nd4 b6 11.Kh2 (11.f4 Nd3-/+) 11...c5 12.bc5 bc5 13.Ne2 Be6 (13...Bf5 14.Na3-+) 14.Nf4-/+ Bd7 (14...Bf5 15.g4 Be6 16.d3 ed3 17.Nd3-/+) 15.Bb2 (15.d3 Bc6-/+) 15...c4 (15...Rb8 16.Ba3-+) 16.Ne2 (16.Ba3 Rb8-/+) 16...Rb8 (16...Qe8 17.Nf4-+) 17.Ba3-/+ Ba3 18.Ra3 Qc8 19.Nd4 Qd8 20.f4?? (20.Ne2 Qe7 21.Ra1-/+) 20...Neg4?? (better is 20...Nd3-+) 21.hg4+= Ng4 22.Kg1 Qf6 23.Bh3 (better is 23.f5 Qg5 24.Rf4+=) 23...Qg6 (better is 23...Ne3 24.de3 Bh3=) 24.Bg4?? (better is 24.f5 Qd6 25.Qg4 (25.Bg4?! Qg3 26.Kh1 Rb6=) 25...Rb1 26.Ra2+/–) 24...Bg4-/+ 25.Qe1 Rb6?? (better is 25...Bh3 26.Ra1 Bf1 27.Kf1 Rb7-/+) 26.Qf2 Rfb8 27.Ra1 Qh5 28.Qh2 Qh2 29.Kh2 f5 30.a5 Rg6 31.Rh1 Bh5 (better is 31...Rb2!?+/–) 32.Nf5+– Rf8? (32...Bf3 33.Ne7 Kf7 34.Ng6 hg6+–) 33.Ne7 (33.Ne7 Kf7 34.Ng6 (34.Nd5?! Bf3 35.Kg1 Bh1 36.Kh1 Rg3+/–) 34...hg6 35.Kg1+–) 1–0. giraira – trying2017, gameknot.com, 2017. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.h3 g6 5.e3 Be6 6.Nf3 Nbd7 7.Ng5 Qe7 8.Ne6 Qe6 9.d3 Bg7 10.g3 (10.Nd2 0-0+=) 10...0-0 11.Bg2 e4 12.0-0 Rfe8 13.d4 b6 14.Nd2 c5 15.f4 (15.a5 Rac8+=) 15...ef3 16.Nf3 (16.Qf3 Qe3 Double attack (16...Qe3 Discovered attack); 16.Nf3 Ne4 Combination; 16.Rf3 Bh6 Combination; 16.Bf3 Qe3 Double attack (16...Qe3 Discovered attack; 16...Qh3 Deflection)) 16...Ne4-/+ 17.Qe1 c4 (17...a5 18.bc5 bc5 19.Kh2-/+) 18.Nh2 (18.Bb2 Bf8-/+) 18...Ndf6 19.g4 Rad8 (19...Bf8 20.Nf3-/+) 20.Ra2 (20.Nf3 h6-/+) 20...a6 21.g5? (21.Nf3 h6-/+) 21...Nh5 (better is 21...Ng5!? 22.Nf3 Nf3 23.Rf3 Ne4-+) 22.Be4+= Qe4 23.Rg2 (23.Ng4 Qe7+=) 23...Nf4!-/+ 24.Rg3 (24.ef4 Qe1 Pinning (24...Qe1 Deflection); 24.Rf4 Qf4) 24...Nd3 25.Qe2 Qh4 (25...h6 26.gh6 Bh6 27.Ng4+=) 26.Qf3 Rf8 27.Bd2 (27.Qg4!? Qg4 28.Ng4 (worse is 28.hg4 Rfe8-/+) 28...Nc1 29.Rc1=) 27...f5-/+ 28.Rb1 (28.gf6 Rf6 29.Qg2 Rf1 30.Nf1 Qe7-/+) 28...Qe4 29.Qe4 fe4 30.Ng4 Rf5 31.h4 Rdf8 32.a5 ba5 (32...b5!?-+) 33.ba5-/+ Nf2 (33...Ra8 34.Rb7-/+) 34.Nf2+= Rf2 35.Rg2 R2f7 36.Rd1 ½–½. giraira – debussy13, gameknot.com, 2018. (=1.c3 e5 2.b4 d5 3.a4 Nf6)

4.Bb2 Be7 5.e3 a6 (5...0-0 6.d4+=) 6.Be2 Be6 7.d3 c6 (7...c5 8.bc5 dc5 9.Nf3+=) 8.h3 (8.Nf3 a5=) 8...h6 (8...a5 9.b5+=) 9.Nf3= Qd7 10.d4 ed4 (10...e4 11.Nfd2=) 11.Nd4 0-0 12.Ne6 fe6 13.0-0 e5 14.f4 (14.Qb3 d5=) 14...ef4 15.Rf4 Nd5 (better is 15...d5+=) 16.Rf8 Bf8 (better is 16...Kf8 17.Bg4 Qe8+=) 17.Qd3 (better is 17.Bc4 Qe7 18.Bd5 cd5 19.Qd5 Qf7 20.c4+/–) 17...Qe6= 18.Bc1 (18.Bg4 Qe3 19.Qe3 Ne3=) 18...Nd7 (18...Nf6 19.c4+=) 19.e4 (19.Bg4 Qe7 20.e4 N5f6 21.Bd7 Nd7=) 19...N5f6+= 20.Nd2 Ne5 (20...a5 21.Bb2=) 21.Qg3 Kh8 (21...d5 22.ed5 cd5 23.Qe3=) 22.Bb2 Rd8 (better is 22...a5=) 23.Bc4?? (23.c4 Kh7+=) 23...Qe7 (better is 23...Nc4!? 24.Nc4 Qc4 25.Re1-+) 24.Rf1?? (better is 24.Bb3+=) 24...Nc4 (better is 24...Ne4 25.Ne4 Nc4-+) 25.Nc4-/+ Ne4 26.Qf4 Nf6 (26...d5 27.Ne5 Kh7 28.Qf5 Kg8 29.Ng6-/+) 27.Rd1 Can d6 get defended? (27.Ne3 Re8 28.Nf5 Nd5+=) 27...Nd5 28.Qg3 Qe2 29.Rd2?? (better is 29.Qd3 Re8 30.Qe2 Re2 31.Rd2 Rd2 32.Nd2-/+) 29...Qc4-+ 30.Rd4 (30.Rf2 Be7 31.Rf3 Bf6-+) 30...Qa2 31.Bc1 (31.Rd2 Qa4 32.Qg6 Qb3-+) 31...Qa4 (31...Qa1 32.Rd1-+) 32.Kh2 (32.Qe1 Qa1 33.Bd2 Qe1 34.Be1 Re8-+) 32...Qa1 (better is 32...Be7 33.b5 Qc2 34.bc6 bc6 35.Ba3-+) 33.Qh4 (33.Bd2 Qb1-+) 33...Re8 (33...Be7 34.Qe1 Bf6 35.Rd1 Nc3 36.Rd3-+) 34.Qh5 (34.c4 Nb4 35.Qf4 d5-+) 34...Nf6 35.Qd1 Qc3 36.Rh4 (36.Rf4 d5 37.Bd2 Qe5-+) 36...d5 37.Bf4 Qb4 (37...Re1 38.Qd2 Qa1 39.Bc7-+) 38.Qf3 Bd6 39.Qg3 Bf4 40.Rf4 Qd6 (40...Qd6 41.Rf3 Qg3 42.Kg3 c5-+) 0–1. giraira – jsupreme, gameknot.com, 2018. (=1.c3 e5 2.b4 Nf6 3.a4 d6)

4.Nf3 Be7 5.d4 ed4 6.Qd4 0-0 7.Nbd2 c5 8.bc5 Nc6 9.Qd3 dc5 10.Qd8 Rd8 11.e4 Bg4 12.Rb1 b6 13.Bb5 Na5 14.0-0 Bf3 15.gf3 Bd6 16.Rd1 Nh5 17.Bb2 f6 18.Nc4 Nc4 19.Bc4 Kh8 20.Bd5 Rab8 21.Bc1 Be5 22.Rd3 Bf4 23.Be3 Be5 24.Rb5 a6 25.Rb1 b5 26.ab5 ab5 27.c4 bc4 28.Rb8 Rb8 29.Bc4 Rc8 30.Rd5 Bf4?? 31.Rh5+– Be3 32.fe3 Rb8 33.Rc5 h6 34.Kf2 Ra8 35.h4 Re8 36.h5 Rd8 37.Rc7 Rd2 38.Ke1 Rh2 39.Rc8 Kh7 40.Bg8 Kh8 41.Bf7 Kh7 42.Bg6# 1–0. MT – guest1581, ICC, 2004.

4.Nf3 Bg4 5.d3 Be7 6.h3 Bh5 7.g4 Bg6 8.Nh4 Nbd7 9.Bg2 c6 10.Nd2 Nd5 11.Ng6 hg6 12.Ne4 N7f6 13.b5 Ne4 14.de4 Nb6 15.a5 Nd7 16.a6 Qc7 17.ab7 Qb7 18.bc6 Qc6 19.Qc2 0-0 20.h4 Nf6 21.h5 Ng4 22.hg6 fg6 23.Bh3 Qc5 24.Bg4 Qf2 25.Kd1 Kf7 26.Qb3 Ke8 27.Qb5 Kf7 28.Qc4 Ke8 29.Be6 Qc5 30.Qa4 Kd8 31.Qd7# 1–0. MT – guest3037, ICC, 2004.

5.Nd4 0-0 6.Nf5= d5 7.Ne7 Qe7 8.Ba3 c6 9.g3 Bg4 10.h3 Bf3 11.b5 Qe5 12.Rh2 Rc8 13.Bc5 Bh5 14.Bg2 Qe6 15.Be3 a6 16.b6 Nbd7 17.a5 c5 18.Na3 Ne5 19.Kf1 Bg6 20.Bh1 Qf5 21.Kg2 Rc6 22.Rc1 Rd8 23.Bf4 d4 24.cd4 cd4 25.Be5 Rc1 26.Qc1 Qe5 27.Qc7 Qc7 28.bc7 Rc8 29.Nc2 Rc7 30.Nd4 Rc5 31.f3 Ra5 32.fe4 Be4 33.Kf2 Bh1 34.Rh1-/+ Ne4 35.Ke3 Ng3 36.Rb1 b5 37.Kf3 Nh5 38.e4 Ra2 39.Nb3 Rc2 40.Ra1 Rc6 41.Nd4 Rb6 42.Nb3 Rf6 43.Ke3 Rc6 44.Nd4 Rb6 45.d3 h6 46.Nf5 Kh7 47.Ne7 Nf6 48.Kd4 Rd6 49.Kc3 b4 50.Kc4-/+ Re6 51.Nf5 Rb6 52.Kb3 Nh5 53.Rf1 g5 54.d4 Nf4 55.Rf3 a5 56.d5 Ne2 57.Ka4 Ra6 58.Kb5 Ra8 59.Kc4 h5 60.Nd6 Kg6 61.Rf7 Ng1 62.e5-/+ Nh3 63.Rf6 Kh7 64.e6 Kg7 65.Rf7 Kg6 66.Rd7 b3 67.e7 b2? 68.Rd8 Rd8 69.ed8Q b1Q 70.Qg8 Kf6 1–0. Fritz 8 – Crafty 19.01, 2005.

5.Nd4 0-0 6.Nf5 d5 7.Ne7 Qe7 8.Ba3 c6 9.g3 Bg4 10.h3 Bf3 11.b5 Qe5 12.Rh2 Rc8 13.Bc5 Bh5 14.Bg2 Qe6 15.Be3 a6 16.b6 Nbd7 17.g4 Bg6 18.a5 Qd6 19.Rh1 c5 20.Ra4 Ne5 21.Na3 Nc6 22.Nc2 Ne7 23.Bg5 Qe5 24.Bh4 Nc6 25.Bg3 Qe8 26.Rg1 Qd7 27.Bh4 Ne8 28.Bg5 f5 29.Ne3 fg4 30.Ng4 Qf5 31.Bh4 Nd6 32.Ne3 Qe6 33.Qb3 c4 34.Qa3 d4 35.cd4 Nd4 36.Qb2 N6b5 37.Bg3 Bh5 38.Bf1 Rc5 39.Bh4 Rf8 40.Rb4 Qf7 41.Rg2 Bf3 42.Rg1 Re8 43.Qa2 Rec8 44.Qa4 Nd6 45.Qa1 N6f5 46.Nf5 Nf5 47.Bf6 Bh5 48.Bc3 Re8 49.Ra4 Rd8 50.Bg2 Qe7 51.Bb4 Qg5 52.Qc3 Rc6 53.Qe5 Be2 54.h4 Qh5 55.Be4 Re8 56.Qd5 Rce6 57.Rg5 Qf3 58.Qe6 Re6 59.Bf3 Bf3 60.Kf1 Nh4 61.Rg3 h5 62.Bc3 Be2 63.Kg1 Nf5 64.Rg5 g6 65.Kh2 Kf7 66.Kg2 Re4 67.Ra1 Rf4 68.Re1 Bf3 69.Kf1 Rh4 70.Re5 Nd4 71.Re3 Bc6 72.Bd4 Rd4 73.Ke2 Bb5 74.Ke1 Rh4 75.Rf3 Kg7 76.Rfg3 Be8 77.Re5 Bc6 78.Re6 Re4 79.Re4 Be4 80.Re3 Bg2 81.Re5 h4 82.f4 h3 83.Kf2 Bc6 84.Kg3 Bg2 85.Rc5 Kf6 86.Rc4 Bd5 87.Rc5 Bg2 88.d4 Kf7 89.Re5 Kf6 90.d5 Bf1 91.d6 Bb5 92.Kh3 Bd7 93.Kg3 Bc6 94.Kh4 Bd7 95.Rd5 Ke6 96.Rd4 Kf5 97.Rc4 Ke6 98.Rc7 Kd6 99.Rb7 Bc6 100.Rb8 Kc5 101.b7 Kb4 102.Kg5 Ka5 103.Kg6 Kb6 104.Kf6 Bb7 105.f5 a5 106.Rb7 Kb7 107.Ke5 a4 108.Kd4 a3 109.Kc3 Kc6 110.f6 Kd6 111.f7 Ke7 112.f8Q Kf8 113.Kb3 ½–½. Fritz 5.32 – Doctor? 3.0, 2003.

5.Nd4 0-0 6.Nf5= d6 7.Ne7 Qe7 8.d4=.

5.Nd4 d5 6.d3=+.

5.Nd4 d5 6.g3 0-0 7.a5 Nbd7 8.a6 Ne5 9.ab7 Bb7 10.Bh3 Bc8 11.Bg2 Bg4 12.0-0 h5 13.f3= Bd7 14.fe4 de4 15.Nf5 c5 16.d4+= cd4 17.Ne7 Qe7 18.Bg5 dc3 19.Nc3 Qb4 20.Bf6 gf6 21.Ne4 Qb6 22.Kh1 f5 23.Nc3 Rfd8 24.Nd5 Qd6 25.Qd2 Kg7 26.Qg5+– Qg6 27.Qe3 Qd6 28.Ra6! Bc6 29.Rf5 f6 30.h3 Nc4 31.Qc3 Nb6 32.Nf6 Kg6 33.Ne4 Be4 34.Be4 Qd4 35.Qf3 Qe4 36.Qe4 Rd1 37.Rf1 Kg7 38.Rd1 Kh8 39.Rb6! ab6 40.Qa8 Kg7 41.Qb7 Kf6 42.Rd6 Ke5 43.Qd5# 1–0. mtr – gnu, internet, 2006.

4.Qb3 Nc6 5.Na3 (5.e3 0-0-+) 5...0-0 (5...Bc5 6.Bb2-+) 6.Bb2 (better is 6.Nc2 Bc5 7.Ba3-+) 6...Nd4?? (better is 6...d6-+) 7.Qb4+– d5 (7...d6 8.Bd4 ed4 9.Qb2+–) 8.e3 (8.Bd4 ed4 9.Nb5 d3+–) 8...Nc6 9.Qc5 Ne4? 10.0-0-0?? Nc5-+ 11.d4 Nb3 12.Kb1 Nb4 13.Bc3 a5 14.Bb4 ab4 15.Nb5 dc4 16.de5 Qd1 17.Kb2 Ra4 18.Bc4 Nc1 19.Nc3 bc3 20.Kc3 Na2 21.Kb2 c6 22.Bb3 Qc1 0–1. idontknow – cacook (1620), net–chess.com, 2006.

4.Nf3 d6 5.Ba3 Ba3 6.Ra3 0-0 7.Nc3 Nc6 8.e3 Re8 9.d4 Bf5 10.Rb3 b6 11.de5 de5 12.Qd8 Rad8 13.c5 Nd4-+ 14.ed4 ed4 15.Ne2 d3 16.a5 de2 17.Be2 Bd3 18.Rb2 ba5 19.Rd2 a4 20.h4 Rd5 21.Ng1 Bc4 22.Rd5 Bd5 23.Rh3 Bg2 24.Ra3 Bc6 25.Nf3 Re4 26.Kd1 Nd7 27.h5 Rb4 28.Nd2 Rf4 29.Ke1 Nc5 30.Rc3 Rf5 31.f4 Bg2 32.Nc4 a3 33.Ne3 a2 34.Ra3 Rf4 35.Ra2 Bb7 36.Ra7 g5 37.Ra5 Ne6 38.Bg4 h6 39.Rb5 Bc6 40.Re5 Nd4 41.Rc5 Kh7 42.Bf5 Kg7 43.Bc2 Kf6 44.Bb1 Rh4 45.Nf5 Rh1 46.Kf2 Rh2 47.Ke3 Nf5 48.Bf5 Bg2 49.Bg4 Rh4 50.Bd7 Rh5 51.Rc7 Rh1 52.Kf2 Bd5 53.Rc5 Ke5 54.Bc6 Rd1 55.Bd5 Rd5 56.Rc7 f5 57.Rh7 Rd2 58.Kg3 f4 59.Kg4 Rd3 60.Rf7 Kd4 61.Rd7 Ke3 62.Rh7 Rd6 63.Ra7 f3 64.Kg3 0–1. Fritz 8 – Fritz 8, 2004.

4.Nf3 d6 5.Ba3 Ba5 6.Qc2 Nc6 7.e4 Bg4 8.Be2 Qd7 9.0-0 Bf3 10.Bf3-/+ Nd4 11.Qd1 a6 12.Bb2 Bb6 13.a5 Bc5 14.Na3 0-0 15.Nc2 Ne6 16.d4 ed4 17.Nd4 Ng5 18.h4 Nge4 19.Qc2=+ Bd4 20.Bd4 Nc5 21.Bc5 dc5 22.Bb7 Rab8 23.Rfd1 Qg4 24.Ba6 Ra8 25.Bb5= Qh4 26.Qf5 Ng4 27.g3 Qh2 28.Kf1 Qg3 29.fg3 Ne3 30.Kf2 Nf5 31.Rd7 Ra7 32.a6 h6 33.Bc6 Rb8 34.Bd5 Rb2 35.Kf3 Nd6 36.Rd8 Kh7 37.Ra8 Rb3 38.Ke2 Ra8 39.Ba8 Nc4 40.Be4 f5 41.Bf5 g6 42.a7 Rb2 43.Kf3+– Nb6 44.Be4 Rb3 45.Kf4 c6 46.Ra6 Na8 47.Rc6 Rb6 48.Rc8 Ra6 49.Ra8 Kg7 50.Bd5 Ra4 51.Ke5 Kh7 52.Bg8 Kg7 53.Bb3 Ra3 54.Rg8 Kh7 55.a8Q c4 56.Rh8 (56...Kg7 57.Qf8) 1–0. COMP – COMP, 2002.

3.Ba3 Nc6 4.b5= Na5 (4...Ne7 5.Nf3=) 5.Bf8 Rf8 6.d4 d5 7.e3 a6 8.Nf3 ab5 9.ab5 b6 10.Bd3 Bb7 11.0-0 Qd6 12.Ne5 h5 13.Nd2 Ng4 (13...c5!?+/-) 14.Ng4+- hg4 15.Qg4 Rh8 16.Nf3 0-0-0 (16...g6 17.Ne5 Nc4 18.Ra8 Ba8 19.Ra1+-) 17.Qg7 Rdg8 18.Qf7 (better is 18.Qf6+-) 18...Rf8+/- 19.Qg7 Rhg8 20.Qe5 Qe7?? (better is 20...Rf3 21.Qd6 cd6+=) 21.Kh1 Rh8 22.Ng5 Rfg8 23.Qe6 Qe6 24.Ne6 Rg6 25.Bg6 (25...Kd7 26.Nf4+-) 1-0. Paz01 - qdoc, internet, 2002.

3.Ba3 d5 4.Nf3 Nbd7 (4...Bd6 5.e3=+) 5.e3 Be7 (5...e5 6.Be2=+) 6.Be2 (6.d4 Bd6=) 6...0-0 (6...e5 7.0-0=) 7.0-0 (7.d4 a6=) 7...a6 (7...e5 8.b5=) 8.d4 b5 (8...Re8 9.Nbd2=) 9.ab5 Nb6 (better is 9...ab5!? 10.Bb5 Bb4=) 10.Ne5 (10.ba6 Ba6 11.b5 Bb7+/–) 10...Bd6 (10...ab5 11.Bb5 Bb7 12.Nc6 Bc6 13.Bc6+/–) 11.Nc3 (better is 11.ba6 Ba6 12.b5+/–) 11...Be5? (better is 11...Qe7!?+/–) 12.de5+– Nfd7 13.ba6 Ba6 14.b5 Bb7 15.Bf8 Qf8 16.Qd4 h6 17.Bd3 c5 18.bc6 Bc6 19.Ra8 Ba8 20.Rb1 Nc4 21.Bc4 Ne5 22.Qe5 dc4 23.Rb8 (23.Rb8 Bg2 24.Rf8 Kf8 25.Qc5 Kg8 26.Kg2+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

3.Ba3 e5 4.e3=+.

3.Bb2 Bb4-/+ 4.Nc3 0-0 5.e3 d5 6.h3 Nc6 7.Bd3 Re8 8.Nf3 a6 9.0-0 Bd7 10.e4 (10.Be2 e5-+) 10...d4 (10...Bc3!? 11.Bc3 Ne4 12.Be4 de4 13.Ne5-+) 11.Ne2 e5 12.c3 dc3 13.dc3 Bf8 14.c4 Be6 15.Qc2?? (better 15.Ne5 Ne5 16.Be5 Bc4 17.Bc4 Qd1 18.Rfd1 Re5 19.f3-/+) 15...Nb4-+ 16.Qb3 (16.Qb1 Qd3 (16...Nd3?! 17.Rd1-+) 17.Ng3 Bc4 (worse 17...Qc4 18.Rc1 Qd3 19.Rc7-+) 18.Ne5 Qb1 19.Rfb1 Ba2-+) 16...Nd3 (16...Qd3!? 17.Qd3 Nd3 18.Be5 Ne5 19.Ne5 Ne4 20.Nd4-+) 17.Be5 (17.Rad1 Nc5 18.Rd8 Nb3 (18...Rad8?! 19.Qa2-/+; 18...Red8?! 19.Qc2=) 19.Ra8 Ra8-+) 17...Ne5 18.Ne5 a5 (18...Qd6!? 19.Nf3 Qb4 20.Qb4 Bb4 21.Ned4 Ne4 22.Ne6 Re6 23.Rfb1-+) 19.Qb7 Rb8 (better 19...Qd6 20.Nc6 Ne4-+) 20.Qc6 (20.Qa7-+) 20...Rb6 21.Qb6 (21.Rfd1 Qc8 22.Qb5 Rb5 23.ab5 Ne4-+) 21...cb6 22.Nc6 Qc7 23.Ned4 (23.Ncd4 Bc4 24.Rac1 Ne4-+) 23...Bc5 (23...Bd7 24.e5 Ne4 25.Na5 ba5 26.Nf3-+) 24.Ne6 (24.e5 Nh5 25.Ne6 Re6 26.Na5 ba5-+) 24...Qc6 (24...Re6 25.Na5 ba5 26.e5 Qe5 27.Rad1-+) 25.Nf4 (25.Nc5 Qc5 26.e5 Re5-+) 25...Re4 (25...Ne4 26.Nd3 Bd4 27.Rad1-+) 26.g3 (26.Nd3 Bd6 27.Rfd1 Rc4-+) 26...Rc4 27.Rad1 h6 28.h4 Nh5! 29.Nh5 Qg6 30.Rd8 Kh7 31.Rd5 f5 32.Kh2 Qh5 33.f4 Qe2 34.Kh3 (34.Rf2 Qf2 35.Kh3 Qf1 36.Kh2 Rc2 37.Rd2 Rd2) 0-1. alt20 – youcheckimate, lichess.org, 2015.

3.b5 d5 4.d4 c6 (4...a6 5.Bb2 ab5 6.ab5 Ra1 7.Ba1-/+) 5.e3 Ne4 (5...a6 6.c4-/+) 6.g3 (6.Bd3 a6 7.Be4 de4 8.bc6 Nc6=) 6...cb5 (6...a6!? 7.f3 Nf6-/+) 7.Bb5=+ Nc6 8.f3 Bb4?? (8...Qa5 9.Kf1 Nf6 10.Ne2=+) 9.Kf1?? (better 9.c3!? Nc3 10.Bc6 bc6 11.Qb3 Na2 12.Bd2+-) 9...Nc3 (better 9...Nd6!?-/+) 10.Nc3= Bc3 11.Ra2 (11.Rb1 h5=) 11...0-0 12.Ne2 Ba5 13.h4 (13.Ba3 Re8=+) 13...Nb4 14.Rb2 a6 15.Bd3 Bd7 (better 15...Qe8=+) 16.h5? (16.Bd2 Nd3 17.cd3 Rb8=+) 16...Nd3 (better 16...Ba4!? 17.h6 Qf6-/+) 17.cd3=+ b5 18.f4 (better 18.ab5!? ab5 19.h6=) 18...ba4-/+ 19.g4 (19.h6 Qf6-/+) 19...f5 (19...Rb8 20.Kg2-+) 20.g5 Bb5 (20...Rb8 21.h6 g6 22.Kf2-+) 21.g6 (21.h6 g6-/+) 21...hg6 (21...Qe7 22.Ra2-+) 22.Kf2? (22.Nc3 gh5 (22...Bc3 23.hg6 Rf6 24.Rbh2 Rg6 25.Rh8 Kf7 26.Rd8 Rd8 27.Qh5 Bd3 28.Kf2=) 23.Na4 Be8-/+) 22...a3 (better 22...gh5 23.Rh5 Rb8-+) 23.Ra2=+ gh5 24.Rh5 Rf6 25.Ra3 Bb4 (25...Rh6 26.Rh6 gh6 27.Ng3-/+) 26.Rb3 (26.Ra1 Rh6 27.Rh6 gh6-/+) 26...a5 (26...Ba4!? 27.Qh1 Bb3 28.Rh8 Kf7 29.Qh5 Ke7 30.Rd8 Rd8 31.e4 de4 32.de4 fe4 33.Qh7-+) 27.Qh1-/+ Be8 (better 27...Kf7!? 28.Bd2 Qc7 29.Bb4 ab4=+) 28.Rh8= Kf7 29.Qh5 (29.Bd2 Qd6= (29...Bd2 30.Rb7 Bd7 31.Qh5 Ke7 32.Rd8 Rd8 33.Qg5+-)) 29...Rg6=+ 30.Bd2 Qe7 (30...Rb8!? 31.Bb4 ab4=+) 31.e4= fe4 (31...de4 32.de4 Combination; 31...fe4 32.Bb4 Combination) 32.f5 (32.de4 de4 33.Rg3+-) 32...ef5=+ 33.Nf4 Qg5 34.Qh1?? (better 34.Qg6 Qg6 35.Ng6 Kg6 36.Bb4 ab4 37.de4 de4 38.Ke3-/+) 34...Qg3 (34...Bc6 35.Ra8 Ba8 36.Rb4 ab4 37.de4-+) 35.Ke2 (35.Kf1 Rg4 36.Ne2 Qf3 37.Qf3 ef3 38.Nf4 Bd2 39.Rb7 Kf6 40.Rf8 Kg5 41.Ne6 Kh6 42.Rh8 Kg6 43.Rf8-+) 35...ed3 (better 35...Rg5 36.Qh3 Qg1-+) 36.Rd3-/+ Qg4 (better 36...Re6 37.Ne6 Bb5 38.Ng5 Ke7 39.Bb4 ab4 40.Ra8 Qd3 41.Kf2 Qd2 42.Kf3 Be2 (42...Qg5?! 43.Qe1 Kf7 44.Qe5=) 43.Kf2 Bh5 44.Kg1 Qg5 45.Qg2 Qg2 46.Kg2 Bd1-+) 37.Rf3?? (better 37.Kf2 Bc6 38.Ng6 Qg6 39.Ra8 Ba8 40.Bb4 ab4 41.Rg3=) 37...Bb5-+ 38.Nd3 Rh8 39.Qf1 (39.Bb4 Rh1 40.Kd2 Rh2 41.Rf2 Rf2 42.Nf2 Qe2 43.Kc1 Rg1 44.Be1 Re1 45.Nd1 Rd1) 39...Rh2 (39...Bd3 40.Ke1 Re8 41.Kd1 Qf3 42.Qf3 Rg1 43.Qf1 Rf1 44.Be1 Rfe1) 40.Qf2 (40.Kd1 Qf3! 41.Qf3 Rd2 42.Ke1 Rg1 43.Qf1 Rh2 44.Kd1 Rf1 45.Ne1 Re1) 40...Rf2 41.Kf2 (41.Kd1 Rd2 42.Kc1 Qg1 43.Rf1 Qf1 44.Ne1 Qe1) 41...Qg2 42.Ke3 (42.Ke1 Qd2 43.Kf1 Qg2) 42…Qd2 (42...Bd2?!=) 0-1. Paul593 - Larry Larry (1785), ChessWorld.net, 2015.

3.b5 Be7 4.Bb2 d5 5.Nf3 c5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.a4).

3.b5 g6 4.c4 Bg7 5.Nc3 Ne4 6.Ne4 (better 6.Bb2!?=+) 6...Ba1-/+ 7.d4 f5 8.Ng3 (better 8.Bh6!?-/+) 8...Bc3-+ 9.Bd2 Bd2 (9...Bd4!? 10.Nf3 Bc5 11.e4-+) 10.Qd2 Qe7 (10...a6 11.Qc3-/+) 11.Nf3 (11.a5 e5-/+) 11...c6 (11...Qa3!? 12.e3-+) 12.e3 cb5 13.ab5 a6 14.b6 Nc6 15.Bd3 Qb4 16.0-0 (16.d5!? Qd2 17.Kd2 ed5 18.cd5-/+) 16...Qd2-+ 17.Nd2 Nb4 18.Be2 a5 (better 18...d6-/+) 19.e4? (better 19.c5!?-/+) 19...a4 (19...f4 20.Nh1-+) 20.ef5 gf5 21.Re1 (21.Rb1 Nc2 22.Nf3 a3-+) 21...a3 (21...Nc2 22.Rd1-+) 22.Bh5 (22.Nb3-+) 22...Ke7 (22...Kd8 23.Ra1-+) 23.d5? (better 23.Nf5 Kf6 24.Ne3-+) 23...a2 24.Nb3 Nc2 25.Nf5 (25.Rd1-+) 25...Kf6 26.de6 (26.Rc1 ef5 27.g3-+) 26...Ne1 27.ed7 Bd7 28.Nd6 Nc2 29.Nb7 (29.Ne4 Ke7 30.Nc3 a1Q 31.Na1 Ra1 32.Nd1-+) 29…a1Q (29...a1Q 30.Na1 Ra1 31.Bd1 Rd1) 0-1. FelipeBessa – chessbit, Rated Bullet game, lichess.org, 2019.

3.c3 d5 4.h3 Nc6 5.Nf3 a6 6.g4 Bd6 7.Bg2 0-0 8.Ba3 Ne5 9.Ne5 Be5 10.b5 Bd6 11.Qb3 Ba3 12.Na3 ab5 13.ab5 b6 14.0-0 Bd7 15.c4 Ne4 16.Be4 de4 17.Nc2 Ra1 18.Ra1 Qh4 19.Kg2 f5 20.Qg3 Qg3 21.fg3 fg4 22.hg4 e5 23.Ne3 g6 24.Ra7 Rc8 25.Nd5 Kf8 26.Nf6 Be6 27.Ne4 Bc4 28.Nc3 Be6 29.Kf3 Ke7 30.g5 Kd6 31.e4 Kc5 32.Ra1 Bc4 33.Rb1 Rd8 34.Rb2 Rd3 35.Kf2 Rd8 36.Kf3 Ra8 37.g4 Ra5 38.Ke3 Bb5 39.Nd5 Ra3 40.Kf2 Bc6 41.Rc2 Kd6 42.Nf6 Bb7 43.Ke2 Ba6 44.Kf2 Bd3 45.Rc3 Rc3 46.dc3 b5 47.Ke3 Bc4 48.Nh7 c5 49.Nf6 b4 50.cb4 cb4 51.Kd2 b3 52.Kc3 Ke7 53.Nd5 Kd6 54.Kc4 b2 55.Nc3 Kc6 56.Kb3 b1Q 57.Nb1 Kc5 58.Kc3 Kb5 59.Nd2 Kc5 60.Nf3 Kd6 61.Kc4 Ke6 62.Kc5 Black resigned 1-0. DaTruth123 (1670) - jack43lin (1750), ChessWorld.net, 2014.

4.Bb2 ab5 5.ab5 Ra1 6.Ba1 d5 7.Nf3 Nbd7 8.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3).

4.c4 d5-/+ 5.cd5 Nd5 (5...ed5 6.e3-/+) 6.ba6 Na6 7.e3 Be7 (7...Bd6 8.d4=+) 8.Bb5 (8.d4 0-0=+) 8...Bd7 (8...c6 9.Bc4-/+) 9.Bd7 Qd7 10.Nf3 0-0 11.0-0 Bf6 (11...Nc5-/+) 12.Ra2 (12.d4 Rfd8=+) 12...Nab4 (12...Ndb4 13.Ra3 Nd3 14.Nc3-/+) 13.Ra3 Rfd8 (13...Nb6 14.d4=+) 14.d4=+ Be7 15.Ra1 b5 (15...c5 16.dc5 Bc5 17.Qb3=+) 16.a5= c5 17.dc5 Bc5 18.Bb2 Qc7 Exerts pressure on the isolated pawn 19.Qe2 Ra5 20.Ra5 Qa5 21.Nc3 Rb8 22.Nd5 Nd5 23.Ra1 Qb6 24.h3 (24.Ne5 Rd8-/+) 24...h6 (24...b4 25.Be5 Rc8 26.Qb2-/+) 25.Ne5 Qd6 (25...Rd8 26.Rc1 f6 27.Nd3-/+) 26.Qf3 (26.Qh5 Rf8=+) 26...f6-/+ 27.Ng6 b4 28.e4 (28.Rd1 Qb6-/+) 28...Nc3 29.Bc3 bc3 30.Qc3 Bd4 31.Qe1? (better 31.Qc6 Bf2! 32.Kh1 Qc6 33.Ne7 Kf7 34.Nc6-+) 31...Ba1 32.Qa1 Kf7 (32...Kh7 33.Nh4 Qf4 34.Qa2 Qh4 35.Qc2-+) 33.Nh4 (33.e5 Qb4 34.Nh4 Qe4-+) 33...Qb6 (33...Qf4 34.e5 Rc8 35.Qa7 Kg8 36.g3 Qe5 37.Qa4-+) 34.Nf3 (34.Qc3 Rd8 35.Qc2 Qd6-+) 34...Qb1 35.Qb1 Rb1 36.Kh2 Rb4 37.e5 f5 (37...h5 38.Kg3-+) 38.g3 (38.h4 Kg6 39.Kh3 Rb3-+) 38...g5 39.Kg2 (39.Ne1 Re4 40.Nd3 h5-+) 39...Kg6 (39...Re4 40.Kf1-+) 40.Kf1 (40.Ne1 Rb5 41.f4 Rb2 42.Kg1 Kh5-+) 40...Re4 41.Kg2 h5 Black prepares g4 42.Kf1 g4 43.Nh4 Kg5 44.f3 (44.hg4 hg4 45.Ng2-+) 44...Re5 (better 44...Ra4 45.hg4 hg4 (45...fg4?! 46.f4 Rf4 47.gf4 Kf4 48.Kg2-+) 46.fg4 Kg4-+) 45.f4= Kf6 46.fe5 Ke5 47.Kf2 (47.Kg2 Ke4=) 47...f4 (47...gh3 48.Ng6 Kf6 49.Nf4=) 48.gf4= Kf4 49.Ng6 Kg5 50.Ne7 (50.hg4!? hg4 51.Ne5=) 50...gh3=+ 51.Nc6 h4 (51...Kg4!?=+) 52.Kg1 Kg4 53.Kh2 Kg5 54.Ne7 Kg4 55.Nc6 Kg5 56.Nd4 e5 57.Ne6 Kg4 58.Nc5 Kg5 59.Ne4 Kf4 60.Nd6 Kg4 61.Nf7 (61.Ne4 Kf5 62.Nd2 Kf6=) 61...Kf4 (61...e4 62.Ne5 Kf5 63.Nc4=) 62.Ne5 Ke5 63.Kh3 Ke4 64.Kh4 ½-½. Kabatana_Michael (1715) - Laphroig (1690), lichess.org, 2018.

4.e3 d5 5.Bd3 (5.Ba3 Ba3 6.Ra3 e5=+) 5...Bd7 (better is 5...ab5 6.Bb5 c6-/+) 6.Nf3? (better is 6.Bb2=) 6...ab5-+ 7.c3 (7.Ne5 ba4 8.Nc3 Bb4-+) 7...ba4 8.Bc2 b5 9.Nd4 c5 10.Ne2 Bd6 11.d4 Qc7 12.g3 Nc6 13.dc5 Bc5 14.Bb2 Ne5 15.Nf4 Nc4 16.0-0 Nb2 17.Qf3 Nc4 18.Bd3 Bc6 19.Bc4 dc4 20.Qe2 0-0 21.Nd2 Ne4 22.Ne4 Be4 23.f3 Bc6 24.Rfd1 Rad8 25.Rdb1 e5 26.Ng2 Rd3 27.Kh1 f5 0–1. arifagam – cherepanyak (1800), net–chess.com, 2002.

4.Bb2 Bb7 5.Nf3 Be7 (5...Bc5 6.e3=) 6.c4 (6.e3 a6=) 6...0-0=+ 7.Ba3 (7.Qc2 Be4 8.d3 Bb7=+) 7...d5 (7...d6 8.Bb2-/+) 8.e3 Nbd7 (8...c5 9.d4=+) 9.d4 Ba3 (9...c5 10.bc6 Bc6 11.a5=) 10.Ra3 (10.Na3 a6=) 10...dc4 (10...c5 11.bc6 Bc6 12.Nbd2=+) 11.Bc4= Re8 (11...c5 12.0-0=) 12.0-0 c6 (12...c5 13.bc6 Bc6 14.Bb5=) 13.bc6 (13.Qe2 Rc8=) 13...Bc6 14.Rc3 Nd5 15.Bd5 (15.Rc1 Qf6=) 15...Bd5 16.Qd3 (16.Nbd2!?=) 16...Bf3=+ 17.gf3 Qg5 18.Kh1 Nf6 19.Rg1 Qh5 20.Rg3 (20.e4 e5=+) 20...Rac8 (20...Red8 21.Nd2=+) 21.e4 (21.Qa6 Rc3 22.Nc3 Qf5=) 21...Rc3 (21...Qa5 22.Qd2-/+) 22.Nc3=+ Rc8 23.e5 Nd5 24.Ne4 (24.Nd5!? ed5 25.Qb5=) 24...Rc1-/+ 25.Rg1 Rg1 26.Kg1 Nf4 27.Qc2 (27.Qe3 Qg6 28.Ng3 Qb1 29.Nf1 Nd5-/+) 27...Qg6 (27...h6 28.Qc8 Kh7 29.Qc2 Qg6 30.Kf1 Qg2 31.Ke1-/+) 28.Kf1 Do you see the mate threat? 28...Qg2 29.Ke1 Qh2?? (better 29...h6 30.Qc8 Kh7-/+) 30.Qc8 1-0. hamiltonharris (1750) - Yoyager (1610), ChessWorld.net, 2015.

4.e3 c5 5.Nf3 Bb7 6.Be2 Be7 7.0-0 d6 8.d3 0-0 9.Bb2 Nbd7 10.Nbd2 d5 11.c4 Qc7 12.Qc2 Rac8 13.a5 Bd6 14.Bc3 (14.Rfe1 ba5 15.Qc3 Ra8+=) 14...Ne5 (14...e5 15.cd5 Nd5 16.Nc4+=) 15.Qb2 Nfd7 (15...Ned7 16.cd5 ed5 17.Rfe1+=) 16.Ne5 Ne5 (16...Be5 17.Be5 Ne5 18.ab6 ab6 19.Ra7+=) 17.f4+/- d4 18.ed4 (< 18.fe5 dc3 19.Qc3 Be5-/+) 18...Ng6 19.g3 f6 (19...cd4 20.Bd4 Bc5 21.Bc5 bc5 22.Bh5+/-) 20.dc5 Qc5 (20...bc5 21.Bg4 Qd7 22.Rae1+-) 21.d4 Qf5 22.Qb1 (better is 22.ab6 Qh3 23.d5 ab6 24.Bd4 ed5 25.Bf3+/- (25.Bb6?! Qe6 26.Bf3 Bf4=)) 22...Nf4? (better is 22...Qh3 23.Bf3 Nf4+=) 23.Rf4+- (23.gf4?! Qh3 24.Nf3 Bf4+=) 23...Qb1 24.Nb1 Bf4 25.gf4 g5 (25...Rc7 26.Nd2+-) 26.fg5 fg5 27.Bg4 Rfe8 (27...Rce8 28.Nd2+-) 28.Nd2 Bd5 (28...Rcd8 29.Re1 e5 30.de5+-) 29.cd5 Rc3 30.Ne4 (30...Rd3 31.Nf6 Kf7 32.Ne8 Ke8 33.ab6 ab6 34.Ra8 Ke7 35.de6+-) 1-0. orane - blackmasha, caissa.com, 2006.

4.g3 Bb7 5.Nf3=+.

4.g3 Bc5 5.Bg2= Bf2 (5...d5 6.Ba3=) 6.Kf2 c6?? (6...Ng4 7.Ke1 Qf6 8.Bf3 Qa1 9.Na3=) 7.bc6?? (7.Nf3 Ne4 8.Ke1 d5+-) 7...Nc6?? (better 7...Ng4 8.Ke1 Qf6=) 8.Nc3 0-0 (8...d5 9.e3+-) 9.a5! ba5 (9...ba5 10.Ba3 Combination; 9...Na5 10.Ba8 Pinning (10.Ba8 Deflection)) 10.Nb5?? (better 10.Ba3 Re8 11.Bd6+-) 10...Qb6-/+ 11.Ke1 Qb5 12.c3 Bb7 13.Ba3 Rfe8 14.e3 (14.Rb1 Qa6-/+) 14...Rab8 15.Qe2 (15.Bd6 Ne5 16.Nf3 Nd3 17.Kf1 Nf4 18.d3 Ng2 19.Kg2 Nd5-+) 15...Qe2 16.Ne2 Ne5 17.Bb7 Rb7 18.Nd4 Nd3?? (better 18...Nc4 19.Ke2 Ne4-+ (19...Na3?! 20.Ra3 Ne4 21.Ra5-+)) 19.Ke2=+ Ne5 20.Nf3?? (20.Ke1 Nc4 21.Nc2-+) 20...Nf3-+ 21.Kf3 d5 22.g4 Ne4 23.Ke2 Ng5 (23...e5 24.Rhc1 Rc8 25.c4 dc4 26.d3-+) 24.Ra2 (better 24.Rhb1 Rb6 25.Bc5 Rb1 26.Rb1-/+) 24...Ne4 25.h4?? (25.Raa1 e5 26.Rhc1-+) 25…Ng3-+ (25...Ng3 26.Kf3 Nh1-+) 0-1. FelixMart – alfonsoizzo, Rated Blitz game, lichess.org, 2019. (=1.a4 Nf6 2.b4 e6 3.b5 b6)

4.Ba3 Ba3 5.Na3 0-0 6.bc6 bc6 (6...Nc6 7.Nf3-/+) 7.Nc4 (7.Nf3 Re8=+) 7...Ba6 8.Nd6?? (better 8.Nb2=+) 8...Qc7-+ 9.Nf7 Rf7 10.Nf3 d5 11.e3 Bf1 12.Rf1 Nbd7 13.Qe2 h6 14.Nd4 (14.d3 e5-+) 14...Re8 (14...c5 15.Nf3-+) 15.Qf3 (15.a5 e5 16.Nf5 Rb8-+) 15...Ne4 16.Qg4 (16.Qh5 c5 17.Nf3 Qa5-+) 16...Ne5 (16...Qh2 17.Qh3 Qd6 18.f3-+) 17.Qh5 Qa5 (better 17...Nc4 18.Nb3 Rb8-+) 18.c3?? (better 18.Nb3 Qd8 19.Qe5-/+) 18...Nd3-+ 19.Ke2 (19.Kd1 Nef2 20.Rf2 A) 20...Rf2?! 21.Qe8 Kh7 22.Ne6 (22.Nc6? Qb6 23.Nd4 Qb2-+) 22...Nb2 23.Ke1 Nd3 24.Kd1=; B) 20...Nf2 21.Kc2 Qb6-+) 19...Qa6 20.Kd1 (20.Nb5 Nef2 21.Rab1 Rb8-+) 20...Qb7 (better 20...Nf4 21.Qf7 Kf7-+) 21.Qg4 (21.f3-+) 21...e5 (better 21...Ndf2 22.Kc2 Ng4 23.Rf7 Kf7-+) 22.Ne6 (22.Qe2 Nef2 23.Rf2 Nf2 24.Kc1 ed4-+) 22...Re6! 23.Qe6 (23.Qe6 Qb3 Double attack) 23...Qb3 (23...Qb2 24.Qf7 Kf7 25.Ke2 Nf4 26.Kf3 Qc2 27.ef4 Qd3 28.Kg4 Qe2 29.f3 Qg2 30.Kh4 Qh2 31.Kg4 Qf4 32.Kh5 g6) 24.Ke2 Qc2 25.Qe8 Rf8 26.Qf8 Kf8 27.f3 Qd2 0-1. FelixMart - NicholasG28, Rated Blitz game, lichess.org, 2019.

4.Nc3 a6 5.Bb2 Bb4 6.Nf3 0-0 7.e3 d6 8.Bd3 e5 9.0-0 Nbd7 10.Be2 d5 11.h3 e4 12.Nd4 Nb6 13.bc6+/– Qc7 14.Ba3 Ba3 15.cb7 Bb7 16.Ra3 Nc4 17.Bc4 Qc4 18.Rb3+– Bc8 19.Qa1 Be6 20.Rfb1 Nd7 21.Rb7 Rfb8?? 22.Ne6 fe6 23.Rd7 Qc6 24.Re7 Kf8 25.Rb8 Rb8 26.Nd5! ed5 27.Qg7# 1–0. funky – rio, internet, 2011.

4.Nc3 Bb4 5.Nf3 Bc3 6.dc3 0-0 7.Ba3 d6 8.Qd6+/– Ne4? 9.Qb4+– f5 10.Qf8 Qf8 11.Bf8 Kf8 12.c4 a6 13.e3 ab5 14.cb5 Bd7 15.b6 c5 16.a5 Nc6 17.a6 ba6 18.Nd2 Nd2 19.Kd2 a5 20.Be2 Rb8 21.Rhb1 Ne7? 22.Ra5 Nd5 23.b7 Ke7 24.Ra8 Rb7 25.Rb7 Kd6 26.Ra6 Bc6 27.Bb5 Ne7 28.Rbb6 Kd7 29.Bc6 Nc6 30.Rc6 Ke7 31.Re6 Kf7 32.Rec6 h6 33.Ra7 Kg8 34.Rcc7 Kh8 35.Rg7 f4 36.Rgc7 fe3 37.Ke3 (37.Ke3 Kg8 38.Rc8#) 1–0. Mar Ram – Avanoglu,Ercan, internet, 2010.

4.b5 c5 5.e3 d5 6.Bb2 Nbd7 7.Nf3 e5 8.d3 Bd6 9.c4 d4 10.Be2 0-0 11.Qc1 Re8 12.0-0 Nf8 0-1. Vademecum – bjagus, lichess.org, 2013. (=1.a4 e6 2.b4 Nf6)

4.b5 d5 5.Nf3 Bd6 6.g3 Nbd7 7.Bg2 b6 8.0-0 Bb7 9.d3 Qe7 10.Nbd2 h5 (10...e5 11.c4=) 11.e4 (11.c4 0-0-0+=) 11...h4 (11...de4 12.Ng5=+) 12.Nh4 Rh4 (better 12...de4!? 13.Ne4 Ne4 14.de4 0-0-0=) 13.gh4+/- Ne5? (better 13...0-0-0+/-) 14.d4+- Neg4 15.e5 Nh2?? (15...Ne5 16.de5 Be5+-) 16.Kh2 0-0-0 (16...Ne4 17.Ne4 Qh4 18.Kg1 de4 19.ed6 cd6 20.d5 Bd5 21.Qd4+-) 17.ed6 Qd6 18.f4 (18.Kg1 Rh8+-) 18...Rh8 19.Nf3 (19.Qe1 Qd7+-) 19...Ne4 20.Qe1 f6 21.Ra2 (21.Kg1 Qd7+-) 21...g5 22.Kg1 (22.Bh3 gh4 23.Rg2 Kb8+-) 22...gh4 (22...g4 23.Nd2 f5 24.Rc2+-) 23.Nh4 Rg8 24.Rf3 f5 (24...Kb8 25.f5+-) 25.Rh3 Kb8 26.Nf3 Qe7 27.Ng5 Bc8 28.Rh7 Qf6 (28...Qe8 29.Ne4 fe4 30.Qh4+-) 29.Qh4 (better 29.Ne4!? fe4 30.Qh4 Qh4 31.Rh4 Rg3+-) 29...Nc3 30.Rc2 Qd4 31.Kh2 (31.Qf2 Qd1 32.Kh2 d4+-) 31...Qd3 32.Qf2 d4 (32...Na4 33.Rcc7 Rh8 34.Ne6 Be6 35.Qe1+-) 33.Bb2 e5 34.Rd2 (34.Bc3 dc3 35.Qf3 Qf3 36.Nf3 ef4+-) 34...Qc4 35.fe5 (better 35.Nf3 e4 36.Nd4+-) 35...Rg5 36.Rd4 Qc5 (36...Rg2 37.Kg2 Qg8 38.Qg3 Qh7 39.Bc3 Qf7+-) 37.Qf3 (better 37.Bc3 Qc3 38.e6+-) 37...Rg2+/- 38.Kg2 (38.Qg2?! Qd4 39.Bc3 Qc3=) 38...Qd4?? (38...Bb7 39.Rd8 Ka7 40.Rhh8 (worse 40.Bc3 Bf3 41.Kf3 Qc3 42.Kf4 Qc1 43.Kf3 Qf1 44.Ke3 Qg1 45.Ke2 Qg4 46.Ke1 Qg3 47.Ke2 Qe5 48.Kf2 Qf4 49.Ke2 Qc4 50.Kf2 Qc2 51.Kf3 Qb3 52.Ke2 Qc3-/+) 40...Bf3 41.Kf3 Nb5 42.ab5 Qb5 43.Rd2=) 39.Rh8 (39.Qc3 Bb7 40.Kf1 Qf4 41.Ke1 Qe4 42.Kd1 Qg4 43.Kc1 Qg1 44.Kc2 Be4 45.Kd2 Qf2 46.Kc1 Qf1 47.Kd2 Qf2 48.Kc1 Qf1 49.Kd2 Qf2=) 39...Qd2= 40.Qf2 Qf2 (40...Qd5 41.Kg1 Na4 42.Qf5 Qd1 43.Kf2 Qd2 44.Kg3 Qe1 45.Qf2 Qf2 46.Kf2 Nb2 47.e6-/+) 41.Kf2+= Ne4? (better 41...Na4!? 42.e6 Kb7+/-) 42.Ke3 Kb7 43.Kf4 (43.Rh6!? Nc5 44.Bd4+/-) 43...Nc5+= 44.Rc8 (44.Bd4 Na4 45.Rh7 Nc5 46.Bc5 bc5+/-) 44...Kc8= 45.Kf5 Kd7 46.Bd4 Ne6 (46...Na4!? 47.e6 Ke8=) 47.Be3+/- Ng7 48.Kg6 Ne6 49.Kf7 Nd8 50.Kf8 (50.Kf6!?+/-) 50...Ke6 (50...c5!? 51.bc6 Nc6 52.Bb6 Ke6=) 51.Ke8+= Nb7 52.Bg5 (better 52.Bd4!?+=) 52...Ke5 53.Bd8?? (better 53.Kd7!? Nc5 54.Kc7 Na4 55.Kc6=) 53...Kd6 (better 53...Nd8 54.Kd7 Ne6-+) 54.Be7-/+ Kd5 (better 54...Ke6-/+) 55.Bd8?? (better 55.Kd7!? Nc5 56.Kc7 Na4 57.Kb7=+) 55...Nd6 (better 55...Nd8 56.Kd7 Ne6-+) 56.Kd7 Nb5 (56...Nb5 57.ab5 Kc5-/+) 0-1. chessforce (2355) - NueveReinas (2315), Rated Blitz game, lichess.org, 2016. (=1.a4 A00: Irregular Openings 1...Nf6 2.b4)

3.Na3 Bg7=+ 4.Rb1 0-0 5.d3 (5.Nf3 d5=+) 5...d6 (5...Nd5!? 6.Rb3 Nc3-/+) 6.e4=+ e5 7.f4 (7.c4 c5=) 7...Nc6 (7...ef4 8.Nf3-/+) 8.Nf3 (8.b5 Nd4 9.c3 Ne6 10.fe5 Nd7=) 8...Be6 (8...ef4 9.b5 Ne5 10.Bf4 Nf3 11.Qf3-/+) 9.Be2= Qd7 (9...ef4 10.0-0=) 10.0-0 Ne8 (10...Nd4 11.fe5 de5 12.a5= (< 12.Ne5 Ne2 13.Kh1 Ng3 14.hg3 Qa4-/+)) 11.Bd2 (11.c3 ef4 12.d4 Nf6+=) 11...h6 (11...ef4!? 12.b5 Nd4=+) 12.b5+= Ne7 (12...Nd4 13.a5=) 13.c4 (13.fe5 de5 14.Qc1 g5+=) 13...f5 (13...ef4 14.Bf4 f5=) 14.Qc2 (14.fe5!? de5 15.Qc1 fe4 16.de4+=) 14...ef4 (14...fe4 15.de4 ef4 16.a5=+) 15.Bf4 (15.ef5!? Rf5 16.d4=) 15...fe4-/+ 16.Nd2 g5 17.Be3 (17.Bg3 e3 18.Rf8 Bf8-/+) 17...ed3 (better is 17...Nf5!? 18.Rf5 Bf5 19.de4 Bg6-+) 18.Rf8=+ Bf8 19.Bd3 (19.Qd3? Bf5 20.Qb3 Bb1 21.Nab1 Bg7-+) 19...Bf5 20.Rf1 Ng7 21.Bd4= Bd3 22.Qd3 Nef5? 23.Ne4 Nd4?? 24.Nf6+– Kf7 25.Nd7 Ke7 26.Qd4 Kd7 27.Rf7 Ke8 28.Rg7 Bg7+– 29.Qg7 Rd8 30.Nc2 Rd7 31.Qg8 Ke7 32.Nd4 c5 33.Qe6 Kd8 34.Nf5 Kc7 35.a5 b6 36.a6 h5 37.Qd5 h4 38.Qb7 Kd8 39.Qb8# 1–0. joker1n (1675) – solaris8, kurnik, 2011.

3.c3 Bg7 4.a5 d6 5.h4 (5.d4 0-0=+) 5...Bg4 (5...c5 6.b5=+) 6.g3 (6.d4 d5=+) 6...c5 (6...d5 7.Bg2=+) 7.h5 (7.Bg2 Qc8=) 7...Bh5 (better is 7...Nh5 8.Bg2 Bc8=+) 8.g4? (better is 8.Bg2 Qd7 9.a6=+) 8...Bg4-+ 9.d3 (9.Bg2 Qc8-+) 9...cb4 10.e3?? (10.Bg2 Nc6 11.cb4 Nb4 12.Qa4 Nd7 13.Qb4 Ba1 14.Qg4 Qa5 15.Nd2-+) 10...Bd1 11.Kd1 bc3 12.Rh7 Rh7 13.f4 Rh1 14.Bh3 Rg1 15.Kc2 Nd5 16.Ba3 Ne3 17.Kb3 c2 18.Nd2 Ra1 19.Bd6 c1N 20.Kb4 Qd6 21.Kb5 a6 0–1. idontknow – aleandy (2030), net–chess.com, 2006.

3.c4 Bg7 4.b5 0-0 5.f4 a6 6.ba6 Na6 7.h4 h5 8.e3 d6 9.Nf3 Nc5 10.Qc2 Bf5 11.Qa2 c6 12.Bb2 Qd7 13.Bf6 ef6 14.Nc3 b5 15.cb5 cb5 16.Nb5 Na4 17.Nbd4 Nc5 18.Qd5?? (18.Qa8 Ra8 19.Ra8 Kh7 20.Nf5 Qf5+=) 18...Be6 (18...Ra1 19.Kf2 Ne4 20.Kg1-+) 19.Qc6?? (better is 19.Qa8 Ra8 20.Ra8 Kh7 21.Ra1+=) 19...Ra1-+ 20.Ke2 Qe7 21.Ng5 fg5 22.fg5 Bd4 23.ed4 Bd5 24.Kf2 Ne4 25.Kf3 Bc6 26.Bd3 Nd2 27.Kg3 Rh1 28.Bg6 Qe1 29.Kf4 Rf1# (29...fg6#) 0–1. wielkiszo – linakip, kurnik, 2012.

3.d4 Bg7 (--> 1.b4 g6 2.a4 Bg7 3.d4 Nf6).

3.e3 Bg7 4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a4).

3.Nf3 Bg7 4.Bb2 0-0 5.d3 d6 6.e4 e5 7.Be2 Bg4 8.0-0 Nc6 9.b5 Ne7 10.Nfd2 Be2 11.Qe2 c5 12.Nc4 Nh5 13.a5 Nf4 14.Qf3 Qd7 15.Nc3 Ne6 16.Qh3 f5 17.a6 b6 18.Rab1 Nd4 19.Ne3 Rad8 20.ef5 gf5 21.f4 Ng6 22.fe5 de5 23.Rf2 f4 24.Qd7+/– Rd7 25.Nc4 Re8 26.Ba1 Ne7 27.g4 Nc8 28.Ne4 Rf8 29.g5 Rf5 30.Bd4 cd4 31.Kg2 Rd5 32.h4 Bf8 33.Kh3 Kf7 34.Ng3! Ke6 35.Nf5 Kf5 36.Re2 Bg7 37.Ree1 Bf8?? 38.Re5!+– (38...Re5 39.Ne5 Ke5 40.Re1 Kd5 41.Re8+–) 1–0. COMP – Marre, 2003.

3.h4 e5 4.Bb2=+.

3.h4 Bg7 4.d4 d6 5.Nf3 Bf5 6.e3 Nc6 7.b5 Na5 8.Bd2 b6 9.Ba5+= ba5 10.Bd3 Bg4 11.Qd2 Nd5 12.Be4+/– e6 13.c4 Nb4 14.Ba8 Qa8 15.Qe2 Bf3 16.gf3 e5 17.h5 g5? 18.h6+– Bf6 19.Nc3 ed4 20.Ne4 Be7 21.ed4 Kd7 22.0-0 f5 23.Ng3 Qf8 24.Rae1 f4 25.Qe6 Kd8 26.Nf5 Bf6 27.c5 Nd3 28.c6 (28...Qe7 29.Ne7 Ne5 30.Re5 Ke8 31.Nf5 Kd8 32.Qd7) 1–0. market (2295) – nrike (1775), GameColony.com, 2002.

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.a4).

3.Bb2 Bg7 4.Nf3 0-0 5.e3 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6 6.a4).

4.Nf3 Bf5 5.e3 e6 6.Ba3 Nbd7 7.Be2 Ne4 8.0-0 Qf6 9.b5 Bg7 10.c4 dc4 11.Bc4 Nb6 12.Bd3 Nd5 13.a5 Rd8 14.a6 ba6 15.Qc2+– Ng5 16.Qc6 Rd7+= 17.Ne5 Nf3 18.gf3 Qg5 19.Kh1 Be5 20.Be4 Bh2= 21.Bd5 ed5 22.Kh2 Qh5 23.Kg1 Qg5 24.Kh1 Qh4 25.Kg1 Bh3 ½–½. Fritz 8 – Fritz 6, 2004.

4.Nf3 Bg7 5.Bf4 0-0 6.e3 Bf5 7.Bd3 Bd3 8.Qd3 c6 9.0-0 Nbd7 10.Nbd2 a5 11.Rfb1 ab4 12.Rb4 b6 13.Be5 c5 14.Rb5 Ne5 15.Ne5 cd4 16.ed4 Qd6 17.Rab1 Ra6 18.c4 e6 19.a5 ba5?? 20.c5+– Qc7 21.Rb7 Rc6 22.Rc7 Rc7 23.Qa6 Nd7 24.Nd7 Rd7 25.Qa5 Bd4 26.Qa4 Bf2 27.Kf2 Rc7 28.c6 Rfc8 1–0. Fritz 6 – Fritz 5.32, 2004.

2.Bb2 (--> 1.b4 Nf6 2.Bb2).

2.Bb2 a5 3.a3 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a5).

2.Bb2 e5 3.Be5 Bb4 4.c4 Nc6=+ 5.Bb2 0-0 6.e3 d5-/+ 7.cd5 Nd5 8.Nf3 Bg4 9.Be2 Re8 10.0-0 Qe7 11.h3 Bh5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 Nc6 5.Bb2 0-0 6.e3 d5 7.cd5 Nd5 8.Nf3 Re8 9.Be2 Bg4 10.0-0 Qe7 11.h3 Bh5).

3.c4 Nbd7 4.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7).

3.c4 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6).

3.c4 e5 4.e3 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5).

3.b6 c6 4.Nc3 Qb6 5.Nf3 d5 6.e4 (6.e3 Qc7-/+) 6...e5 (better is 6...de4!? 7.Ne5 Qc5-+) 7.Ne5 Qd4 (better is 7...Ne4!? 8.Ne4 Qd4-/+) 8.Nf3= de4?? (better is 8...Qc5 9.ed5 cd5=) 9.Ng5 (better is 9.Nd4 Bb4 10.Qe2 Bc3 11.dc3+–) 9...h6-+ 10.Nh3 Bh3 11.gh3 Bb4 12.Bb2 0-0 13.a3 Re8?? 14.ab4+= Qb4 15.Rb1 Qc5 16.Bg2 Nbd7+= 17.0-0 Qg5 18.Ne2 Nh5 19.d3 e3? 20.f3?? b5 21.Qe1 Nf4= 22.Nf4 Qf4 23.Qg3 Qg5 24.Qg5 hg5+= 25.Rfe1 Nc5 26.Bc1 e2 27.Bg5 f6 28.Bh4 Re3?? 29.Bf2+– Re5 30.f4 Rf5 31.Bc5 Rc5 32.Re2 Rd8 33.Ra1 b4 34.Ra6 Rc3 35.Rc6 Rc6 36.Bc6 Rd4 37.Rf2 Kf7 38.Ba4 Kg6 39.Bb3 Kf5 40.Kg2 g6 41.Kg3 Re4 42.de4 (42.de4 Ke4 43.Re2 Kd4 44.Re6+–) 1–0. Mikew319 – 488, ChessWorld.net, 2011.

3.c4 a5 4.a4 (4.d4 e6=) 4...c6 (4...e5 5.Bb2 d6 6.d4=) 5.Bb2 d5 6.e3 Nbd7 7.Nf3 h6 8.Be2 e6 9.0-0 Bd6 10.d4 Qe7 (10...dc4 11.bc6 bc6 12.Nbd2+=) 11.c5+/– Bc7 12.b6 Bb8 13.Qe1 e5 14.Bc3 (14.Ne5 Ne5 15.de5 Ne4=) 14...e4 15.Nfd2 Nf8 16.Nb3 Ng6 17.Ba5 Bg4 18.Bc3 Qd7 19.h3 (19.N1d2 Qf5 20.f3 ef3 21.Bf3 Qd3+/–) 19...Bf5 (19...Bh3 A) 20.gh3? Qh3 21.f4 ef3-+ (21...Qe3 22.Qf2 Qf4 23.Bd2 Qf2 24.Rf2=); B) 20.a5 Nh4 21.f3 Ng2 22.Qf2-+) 20.N1d2 (20.g4 Be6 21.f4 ef3 22.Rf3 h5 23.Rf6 gf6 24.gh5 Ne7-/+) 20...Nf8 (20...Bh3 21.a5 Nh4 22.gh3 Qh3 23.Ne4 Qg2) 21.a5 g5? (21...Bh3 22.a6 ba6 23.Ra6 Ra6 24.Ba6 Bg2-+) 22.a6+– Ba7?? (better is 22...ba6 23.Ba6 g4+–) 23.ba7 Ra7 24.ab7 Rb7 (24...Qb7 25.Ra7 Qa7 26.Qd1+–) 25.Ra8 (25.Ra8 Ke7 26.Na5+–) 1–0. baqua – saul, Live Game Caissa's Web, 2004.

3.e3 c6 4.c4 d5 5.Nc3 (5.Nf3 dc4 6.bc6 Nc6 7.Bc4 b5=+) 5...dc4-/+ 6.bc6 (6.b6 Be6 7.Nh3 Nbd7-/+) 6...b5 7.a4 (7.Qf3 Ra7 8.a4 Bg4-+) 7...b4-+ 8.Na2 b3 9.Nc3 Be6 (9...Nc6?! 10.Bc4 Rb8 11.Bb3=) 10.Qf3 Qc8 (10...Qc7!? 11.Nge2 Nc6 12.Nd4-/+) 11.c7-/+ Nbd7 12.Qf4 Qb7 13.Nf3 Rc8 14.Ng5 Nd5 15.Nd5 b2 16.Rb1 (16.Bb2 Qb2 17.Qc4 Qa1 18.Ke2 Nb6 19.Qc6 Bd7 20.Qb6 Qa4-/+) 16...bc1Q-+ 17.Rc1 Bd5 18.Bc4 e5 (18...Qc7?? 19.Bd5 Qc1 20.Ke2+–; 18...Rc7?! 19.Qf7 Bf7 20.Bf7 Kd8 21.Ne6 Kc8 22.Rc7 Qc7 23.Nc7 Kc7 24.Ke2-/+) 19.Bd5 Qd5 (19...ef4?? 20.Bb7 Ba3 21.Bc8 Bc1 22.Ba6+–) 20.Qf5 (20.Qe4 Qe4 21.Ne4 f5-+) 20...g6 21.Qh3 (21.Qg4 Bc5-+) 21...Ba3 22.Ra1? (22.Rc3 Bb4 23.e4-+) 22...Be7 23.Qf3 Qf3 (23...Qc4 24.h4-+) 24.Nf3 (24.gf3?? Bg5 25.Rc1 Be7-+) 24...Rc7 25.Ke2 0-0 26.Rac1 Rfc8 27.Rc7 Rc7 28.Rb1 Kg7 29.d4 ed4 30.Nd4 Bf6 31.a5 (31.Rd1 Nc5-+) 31...Bd4 32.ed4 Rc4 33.Kd3 Ra4 34.Rb7 Nf6 35.h3 Ra5 36.Rb2 Ra1 37.Rc2 a5 38.Kc4 a4 39.f3 (39.h4 Kf8-+) 39...a3 40.Re2 (40.Kb3 Nd5-+) 40...Nh5 41.d5 Nf4 42.Rd2 Kf6 43.d6 a2 44.Kb3 Rg1 45.Ra2 Rg2 (45...Rg2 46.Ra4 Ne6-+) 0–1. Silent Move (2115) – KingMax (1895), redhotpawn.com, 2014.

4.Bb2 b4 (4...ba4 5.Nc3-/+) 5.Nf3 d6 6.c3 Nc6 7.e3 e5 8.Bb5 bc3 9.Nc3 Bd7 10.e4 Be7 11.d4 0-0 12.0-0 ed4 13.Nd4 Nd4 14.Qd4 c6 15.Bd3 Re8 16.Rfb1 Be6 17.Bc2 Ng4 (17...b6 18.Rd1-/+) 18.Nd5=+ Bf8 19.Nf4 Bc8 20.h3 Ne5 21.Qc3 Qh4 22.Ne2 d5 23.ed5 cd5 24.Qe3 Ng4 25.Qg3 Qh6 26.Qf3 Bd6 27.Ng3 Qd2 28.Bh7 Kh7 29.hg4 Kg8 30.Bc3 Qh6 31.a5 Ra6 32.Rb5 Qh4 33.Qd5 Bg3=+ 34.fg3 Qg4 35.Rf1 Rae6 36.Qg5 Rg6 37.Qf4 f6 38.Rc5 Qg3 39.Qg3 Rg3 ½–½. Maec,Michael – Andersen,Lars Kirstein, R.–Tobies–Gedenkturnier–B, 2003.

4.ab5?? Ra1 5.Bb2 Ra8 6.Nc3 e6 (6...d5 7.Nf3-+) 7.g4 (7.e4 d5 8.e5 Ne4-+) 7...Be7 (better 7...Ng4!? 8.Nf3-+) 8.g5 Nd5 9.Ne4 (9.Nd5 ed5 10.e3 Bg5 11.Bg7 Rg8-+) 9...f6 (9...f5!? 10.gf6 Nf6 11.Ng3-+) 10.e3 (10.c4 f5 11.Ng3 Nb6-+) 10...0-0 11.g6 (11.c4 f5 12.Ng3 Nb4-+) 11...hg6 12.Bd3 (12.Nf3 Nb6 13.h4 d5-+) 12...f5 13.h4 (13.Nc3 Bf6 14.Nge2 d6-+) 13...fe4 14.h5 (14.Be4 Ra2 15.Qb1-+) 14...ed3 15.hg6 Bg5 (15...Rf5 16.cd3 Bf6 17.d4-+) 16.Qh5 (16.Rh8! Kh8 17.Qh5 Bh6 18.Qh6 Kg8 19.Qg7) 16...Bh6-+ 17.cd3 Qf6! 18.Bf6 (18.Bf6 Rf6 Combination) 18...Rf6 (18...gf6?? 19.Qh6 Ra1 20.Ke2 Nc3 21.Kf3 Rg1 22.Qh7) 19.Ke2 (19.Nf3 d6-+) 19...d6 20.Nf3 Bd7 21.Nh2 Na6 22.Ng4 (22.ba6 Be8 Decoy) 22...Nc5?? (better 22...Be8 23.Nh6 Kf8 24.ba6 Bg6+=) 23.Nh6+- gh6 24.Qh6 (24.Qh6 Nc3 25.Kf1 Ra1 26.Kg2 Rh1 27.Kh1+-) 1-0. Lance5500 (2710) - Dingo123 (2315), lichess.org, 2015.

4.Bb2 d5 5.e3 Bf5 6.Nf3 e6 7.d4 (better is 7.Nd4!?=) 7...Nb4-/+ 8.Bd3 Bd6 (8...Nd3 9.cd3 Bb4 10.Nc3-/+) 9.a3 (9.Bf5!? ef5 10.a3+=) 9...Nd3-/+ 10.cd3 Qd7 11.Nc3 0-0 12.0-0 Ra6 13.Ne2? Qb5-+ 14.Qd2 Bd3 15.Rfe1 Ne4 16.Qc1? Rc6 17.Qd1 Rc2 18.Rb1 Re2 19.Re2 Be2 20.Qc1 Bd3 21.Ra1 Ra8 22.Bc3 Nc3 23.Qc3 Ra3! 24.Ra3 Ba3 25.Ne1 Qb1 26.h3 Bd6 0–1. Tago,Shunnichi – Hayakawa,Satoru (2355), 2nd Shigeo Hayakawa Memorial, 2008.

4.Bb2 d6 5.e3+=.

4.Bb2 e6 5.Nf3 Bb4 6.c3 (6.e3 0-0+=) 6...Ba5 (6...Be7 7.e3+=) 7.d3 (7.e3 0-0+=) 7...0-0 8.Na3 (8.e4 d6+=) 8...d5 9.Qa4 (9.e3 Nc5+=) 9...c6 (9...Nc5 10.Qc2-/+) 10.h3 (10.e3 Bc7-/+) 10...Nc5 11.Qc2 b5 12.Nd4 Bb7 13.e3 e5 14.Nf3 Re8 15.Be2 e4 16.Nd4 Qe7 17.0-0 Bc7 18.de4 Nfe4 19.Bf3 Qe5 20.Rfd1 Bd6 21.Be4?? Ne4 22.Nf3 Qe6 23.Nd4 Qg6 24.f3 Ba3-+ 25.fe4 Bb2 26.Qb2 Qe4 27.Re1 h6 28.Nf3 Re6 29.Qf2 Rae8 30.Nd2 Qd3 31.Nb3 Qc3 32.Rac1 Qb4 33.Nc5 R6e7 34.Nb7 Rb7 35.Qc2? Rc7 36.Kf2 Qh4 37.Kg1 Re6 38.Qd2 Rg6 39.Qa5 Qh3 40.Re2 Qg3 41.Qd2 h5 42.Qd4 Rg4 43.Qb6 h4 44.Rc6 Rc6 45.Qc6 Rc4 46.Qe8 Kh7 47.Rf2 h3 48.Kf1 hg2 49.Rg2 Rc1 50.Ke2 Qg2 51.Kd3 Qc2 52.Kd4 Rd1 53.Ke5 Qe4 (53...Qe4 54.Kd6 Qe8 55.Kc5 Rc1 56.Kb4 Rc4 57.Kb3 Qe3 58.Kb2 Qc3 59.Kb1 Qc1#; 53...Qh2 54.Kf5 Qf2 55.Kg4 Rg1 56.Kh5 g6#) 0–1. Drunken Pawn – verns2 (1615), internet, 2010.

4.Nf3 d5=+.

4.Nf3 e6 5.Bb2 d5 6.e3 c5 7.a3 Nc7 8.Bd3 Bd6 9.0-0 c4 10.Be2 b5 11.d3 Bb7 12.Nbd2 Qe7 13.a4 (better 13.Qb1 cd3 14.cd3=) 13...b4 (13...ba4 14.dc4 a3 15.Bf6 Qf6 16.cd5 ed5=+ (16...Nd5? 17.Ne4 Qd8 18.c4+-)) 14.dc4+/- 0-0 15.cd5 ed5 (15...Ncd5 16.e4 Nc3 17.Bc3 bc3 18.e5 Be5 19.Ne5 cd2 20.Qd2+=) 16.Nd4+/- g6 17.Bf3 Na6 (17...Ne4 18.a5+/-) 18.N2b3 Ne4 (18...Be5 19.Na5 Bh2 20.Kh2 Qc7 21.Kg1 Qa5 22.Nf5 gf5 23.Qd4+-) 19.Nb5+- Nac5? (better 19...Be5 20.Be5 Qe5+-) 20.Qd4 f6 21.Nd6 Qd6 22.Rfd1 (better 22.Qb4 Qc7+-) 22...Ne6? (22...Na4 23.Be4 Qe5 24.Qb4 Qb2 25.Bg6 hg6 26.Qb7 Qc2 27.Qd5 Kh8+-) 23.Qe4! de4 (23...Qh2 24.Kh2 de4 25.Be2+-) 24.Rd6 ef3 25.Re6 fg2 26.a5 Rfc8 27.Re7 (27.Rb6 Rc2 28.Rb7 Rb2 29.Rb4 Ra6+-) 27...Bf3 (27...Bd5 28.Nd4+-) 28.Nd4 (28.Bf6!? Ra6 29.Rg7 Kf8 30.Rh7 Rc2+-) 28...Bd5 29.e4 Bc4 30.Kg2 Rc5 31.Nb3 (31.Ra4!? Rca5 32.Rb4 Rg5 33.Kf3 Rc8+-) 31...Rg5 32.Kf3 Rh5 (32...Bb3 33.cb3 Rga5 34.Rd1+-) 33.Rd1 (33.Bf6 Bb3 34.cb3 Rha5 35.Ra5 Ra5 36.Rg7 Kf8 37.Rh7 Ra6+-) 33...g5 (33...f5 34.Be5 fe4 35.Ke4+-) 34.Rdd7 Rh2 (34...g4 35.Kg4 Rh2 36.Bd4 Rg2 37.Kf3+-) 35.Bd4 (35.Bf6 Rh3 36.Kg2 Rh4+-) 35...Rc8 (35...Rh3 36.Kg2 Rh6 37.Rg7 Kh8 38.Nc5+-) 36.Rg7 Kh8 (36...Kf8 37.Bc5 Rc5 38.Nc5 g4 39.Ke3 Rh5+-) 37.Bf6 Rf8 (37...Be2 38.Ke2 Rf2 39.Kf2 Rc2 40.Ke1 Rc1 41.Nc1 h5 42.Rg6) 38.Rh7 Kg8 39.Rdg7 1-0. PchelkinVK (2375) - OsamaElWakeel (2365), Blitz Shield Arena, lichess.org, 2023.

4.cb5 b6 5.Bb2 g6 (5...Bb7 6.Nf3=+) 6.e3 (6.e4 Bg7=) 6...Bg7 7.Qf3 Ra7 8.a4 (8.Nc3!?=) 8...Bb7-/+ 9.Qe2 0-0 10.Nf3 Re8 11.Ne5 c6 (11...Bd5 12.Nc3=+) 12.Qc4 (12.d4 Nd5=+) 12...d5 13.Qf4 c5 14.d4 Nbd7 15.Nc6 Bc6 16.bc6 Nh5 17.Qf3 Nf8 (17...Ndf6 18.g4+–) 18.Bb5 (18.Nc3 Rc7=) 18...Rc7 19.0-0 Ne6 20.Rd1 (20.Nc3 Nf6 21.dc5 bc5+=) 20...Ng5= 21.Qe2 c4 22.Nc3 f5 23.h4 Ne4 24.Ne4 fe4 25.Bc3 Qd6 26.a5 ba5 27.Ra5 e5 28.de5 Qe6 29.Rd5!? Qf5?? 30.Qc4 Kh8 31.Qc5 Rf7 32.Ra2 Qg4 33.c7 (33...Rc8 34.Rd8 Rf8 35.Qf8 Bf8 36.e6 Kg8 37.e7 Qd1 38.Rd1 Be7 39.Rd7+–) 1–0. Wallhoefer,Ulrich – Morgner,Siegfried (1630), Bahn–chG Bad Laasphe, 1994.

4.cb5 b6 5.d4 Bb7=.

4.cb5 b6 5.e3 Bb7 6.Bb2 e6 7.a4 d5 8.Nf3 Nbd7 9.Bd3 Nc5 10.Bc2 Bd6 11.h4 (11.0-0 0-0=) 11...c6 12.Nc3 Qd7 (12...0-0 13.Rc1=+) 13.Ng5 (13.bc6!? Bc6 14.Nb5=) 13...h6=+ 14.Nf3 Nce4 (14...0-0 15.d4 Nce4 16.Ne5=+) 15.Ne4= Ne4 16.Bg7 Rh7 (16...Rg8 17.bc6 Bc6 18.Bh6 Rg2=) 17.Ne5?? (17.bc6 Bc6 18.Bd4 Qc7+/-) 17...Be5?? (better 17...Qc7 18.bc6 Ba6-/+) 18.Be5+- f6 (better 18...f5+-) 19.Bf6?? (better 19.Be4 de4 20.bc6 Bc6 21.Bf6 Ra4 22.Ra4 Ba4 23.Qg4+-) 19...Nf6= 20.Bh7 Nh7 (20...Qh7 21.bc6 Bc6 22.Qb3=) 21.Qg4 (better 21.bc6 Bc6 22.Qh5 Kd8 23.Qg6+/-) 21...0-0-0?? (21...cb5 22.Rc1 Ra4 (worse 22...ba4 23.Qg6 Qf7 24.Qf7 Kf7 25.Rc7 Kg8 26.Rb7+-) 23.Qg6 Qf7+/-) 22.a5 (22.Rc1+-) 22...Nf6 (22...ba5!? 23.bc6 Bc6 24.Ra5+/-) 23.Qg6 (23.Qd4 Ne8 24.Qb6 cb5+-) 23...Qe7 (23...Ng8 24.bc6 Qc6 25.a6+-) 24.Qh6 (24.bc6 Bc6 25.ab6 Rg8 26.Qh6 Rg2+-) 24...c5 (24...ba5 25.bc6 Bc6 26.Ra5+-) 25.a6 Ba8 26.a7 (26.f3!? Ne8+-) 26...Rg8 27.Ra6 Kb7 28.Qf4 e5 29.Qf5 (29.Qf3 Ne4 30.Rf1 c4+/-) 29...Ne4 (29...Rg2 30.h5 Rg7 31.h6+/-) 30.h5 (30.f3 Nd6 31.Qd3 d4+/-) 30...Nd6 (30...Rg2 31.h6 Rg5+-) 31.Qb1 (31.Qd3 Qf7 32.Rh2 c4+/-) 31...e4? (better 31...Rg2!? 32.Qd3 Qf7=) 32.Qb3+/- Qe5 (better 32...c4 33.Qb2 Qg7 34.Qg7 Rg7+-) 33.Ke2?? (33.h6 Rg2 34.Kf1 c4=) 33...Nf5 (better 33...c4 34.Qa4 Rg2=) 34.Rh3 (better 34.Kf1!?+/-) 34…Nd4 (34...Nd4 35.ed4 cd4+-). chessbit (1765) - jhmiii (2145), Hourly SuperBlitz Arena, lichess.org, 2020.

4.cb5 c6 5.e3 d5 6.Bb2 e6 7.Bf6 Qf6 8.Nc3 Bb4 9.Nce2 0-0 10.Nd4 c5 11.Nb3 c4 12.Nd4 Ba3 13.b6 Bc5 14.Qb3 Bd4 15.Qb4 Ba1 16.Nf3 Nc6 17.Qb5 Ra2 18.Be2 Bd7 19.Qc5 Rfa8 20.0-0 Qe7 21.Qe7 Ne7 22.Nd4 Bd4 23.ed4 Rd2 24.Bf3 Nf5 25.g4 Nd4 26.Bg2 c3 27.h4 c2 28.g5 c1Q 29.Rc1 Ne2 30.Kh2 Nc1 31.Kg3 Ra3 32.Bf3 Rdd3 33.Kg4 e5 34.Kh5 g6 35.Kh6 Rf3 36.h5 Ra4 37.hg6 Rh4 White king mated 0-1. themuttsknutts (1665) - Sicilianist (2510), ChessWorld.net, 2012.

4.cb5 d5 5.Nf3=+.

4.cb5 e5 (--> 1.b4 e5 2.b5 a6 3.c4 ab5 4.cb5 Nf6).

4.e3 bc4-+ 5.Bc4 d5 6.Be2 e5 7.Bb2 d4 (7...Bd6 8.d4 ed4 9.Bd4-+) 8.Bc4 (8.ed4 ed4 9.Qc2 Nc6-+) 8...Nc6 (8...de3 9.fe3 Bd6 10.Nf3-/+) 9.Nf3 Ra5 (9...Na5 10.Bf1 Bd6 11.ed4 ed4 12.Bd4-/+) 10.a4 (10.Qb3 Qd7-/+) 10...e4 (better 10...de3 11.de3 Bb4 12.Nfd2 Ne4-+) 11.Ng5?? (better 11.Qb3 Qe7 12.Nd4=+) 11...Rg5-+ 12.g3 (12.Bb5 d3-+) 12...Bh3 (better 12...Na5 13.Bb5 c6-+) 13.Bb5 (13.Qb3 Ne5-+) 13...Bc5 (better 13...Rb5 14.ab5 Ne5-+) 14.f4 Rg6 (14...ef3 15.Bc6 bc6 16.Qf3 de3 17.de3 Bb4 18.Bc3-+) 15.a5 (15.Bc6 bc6 16.Qc2 Qd5-+) 15...0-0 (15...Nd7 16.Bc6 Rc6 17.ed4-+) 16.a6 (16.Bc6 bc6 17.ed4 Bd4 18.Bd4 Qd4-+) 16...Na7 17.Qa4 (17.ab7 de3 18.Bf1 Bf1 19.Rf1 Ng4-+) 17...Bd7 (better 17...de3!? 18.de3 ba6 19.Ba6 Be3 20.Ra2-+) 18.Qc4 (18.Bd7 Nd7 19.ab7 de3 20.de3 Rb6-+ (worse 20...Be3 21.Ke2 Bc5 22.Rd1-+)) 18...b6 (better 18...Nb5!? 19.Qc5 ba6 20.Ra6-+) 19.Bd7 Nd7 20.ed4 (20.Bd4 Re8-+) 20...b5 21.Qc3 (21.Qe2 Bb6-+) 21...b4 (21...Bb6 22.Qb3-+) 22.Qc4 Qf6 (22...Bd6 23.d5-+) 23.Ra5 (23.Qd5 Bd6 24.Qe4 Rh6-+) 23...Bb6 24.Rg5 (24.Ra2 Qd6-+) 24...Rg5 25.fg5 Qg5 26.Qb4 Re8 (26...Ba5 27.Qa3-+) 27.Qa4 (27.Qc4 Nf6-+) 27...Qd5 28.0-0 (28.Na3 e3 29.0-0 ed2-+) 28...e3 (better 28...Nb5 29.Rf2-+) 29.de3 Re3 30.Nd2 (30.Nc3 Qe6 (worse 30...Qd4 31.Qd4 Bd4 32.Nd5 Rg3 33.Kh1-+) 31.Kg2 Nf6-+) 30...Nf6 (better 30...Rd3 31.Re1 Bd4 32.Bd4 Rd4-+ (worse 32...Qd4 33.Qd4 Rd4 34.Re8 Nf8 35.Nb3-+; 32...Rd2?! 33.Re8 Nf8 34.Rf8 Kf8 35.Qb4 c5 36.Qc5 Qc5 37.Bc5 Kg8 38.Ba7-+)) 31.Nc4 (31.Qc4 Qh5 32.Rf2-+) 31...Re2 32.Rf2 (32.Ne3 Re3 33.Qc2-+) 32...Bd4 33.Bd4 Qd4 (33...Re1 34.Rf1 Qd4 35.Ne3 Qe3 36.Kg2 Re2 37.Kh3 Qe6 38.Rf5 Qf5 39.g4 Qf3 40.Kh4 Rh2 41.Kg5 h6) 34.Kg2 Qf2 35.Kh3 (35.Kh1 Qh2) 35…Qh2 0-1. hamiltonharris (1865) - AL HARRIS (1700), ChessWorld.net, 2015.

4.ba6 Na6 5.cd5 Qd5 6.Nc3 Qa5 7.Rb1 Bd7 (better is 7...Nb4!?=+) 8.Rb7+= e5 9.Nf3 Bb4 10.Qb3 (10.a3 Bc3 11.dc3 Ba4-+) 10...Bc6 11.Rb4 Nb4 12.Ne5 0-0 13.Nc4 Qc5 14.d4 Qe7 15.Ne5 Rfb8 16.Qc4 (16.Qd1 Bd5 17.Nd5 Nbd5+/-) 0-1. orane - IsraeliProgram, caissa.com, 2006.

4.e3 ab5 5.cb5 e5 6.a4 Bd6 7.Bb2 0-0 8.Ne2 d4 (8...Nbd7 9.Qc2-+) 9.ed4 (9.Na3 Nbd7 10.Nc4 Nc5-/+) 9...Re8 10.g3 (10.d5 Nd5 11.Nbc3 Nf4 12.Nf4 ef4 13.Be2 Qh4-/+) 10...Bg4 (better 10...ed4 11.Bd4 Ng4-+) 11.Bg2?? (better 11.de5 Be5 12.Be5 Re5 13.Ra3-+) 11...ed4 12.Bd4 (12.f3 d3 13.fg4 Re2 14.Qe2 de2-+) 12...Be2 13.Qe2 Re2 14.Ke2 c6 15.Nc3 Ba3! 16.Ra3 0-1. Bushwacker (1950) - Wynston123 (2120), ChessWorld.net, 2021.

4.Bb5 Ra5 5.Nc3+=.

4.Bb5 g6 5.d4 Bg7 6.Kf1 (6.Nc3!?-/+) 6...Nc6 7.Nc3 0-0 8.Nf3 d5 9.a4 Ne4 10.Ne4 de4 11.Nd2 e5 12.c3 Qh4 13.Kg1 ed4 14.ed4 Re8 15.Nb3 Bf8 16.Be3 Be6 17.Nd2 Bg7 18.f3 ef3 19.Nf3 Qh5 20.Bf4+= Re7 21.Kf2 Bd5 22.Be2? Qg4 23.Qd2? Re2! 24.Qe2 Qf4 25.Rhd1 Na5 26.Kg1 Nc4 27.a5 Bh6 28.Rf1 Ne3 29.g3 Qf5 30.Nh4 Qh3 31.Ng2 Bg2 (31...Bg2 32.Rfe1 Ra6-+) 0–1. Tiedemann,Joern (2125) – Mueller_Toepler,Michael (2220), RS–Pyramide remoteschach.de, 2008.

5.Bc4 d5 6.Bd3 e5 7.Be2 (7.Bb2 Bd6-/+) 7...Qb6 (7...Bd6 8.Bb2-/+) 8.g3 (8.Nf3 Bd6-/+) 8...d4 (8...Bd6 9.f4-+) 9.e4 (better is 9.Nf3!? Nbd7 10.a4-/+) 9...Ne4-+ 10.Nf3 (10.Bc4 Nd6 11.Bb3 Nd7-+) 10...d3! 11.cd3 (11.Bd3 Qf2) 11…Qf2 0-1. manofsteel5 - dopsis, Live Game Caissa's Web, 2005.

5.Bd3 e5 6.Bb2 e4 7.Be2 d5 8.d3 Bb4 9.Bc3 Na6 10.a3 Bc3 11.Nc3 b5 12.Qd2 Qe7 13.a4 Nc5 14.d4 (14.a5!?-/+) 14...Na4-+ 15.Bd1 0-0 16.Nge2 Be6 17.Na4 ba4 18.c4 dc4 19.Ra4 Ra4 20.Ba4 Ra8 21.Bc2 Ra1 22.Bd1 Qa3 23.0-0 Nd5 24.Bc2 f5 25.Ra1 (25.Ra1 Qa1 26.Qd1 Qd1 27.Bd1-/+). Tiedemann,Joern (2020) – Hahner,Anton (1990), RSS7E starter–25, 2011.

5.Be2 d5 6.Bb2= e5 (6...e6!?=) 7.Be5+= Ne4 (7...Nbd7 8.Bd4+=) 8.Nc3 (8.Nf3 Nd7 9.Bb2 Qb6+=) 8...Nc3 (8...Nd7 9.Bd4+=) 9.Bc3+= Bf5 (9...b5 10.Nf3+=) 10.Nf3+/– f6 (10...Bd6 11.Nd4 Bg6 12.0-0+/–) 11.Nh4 Be6 12.Bh5 Bf7 13.Bf7 Kf7 14.Qh5 Kg8 15.0-0 Be7 16.Nf5 g6 17.Ne7 Qe7 18.Qf3 Nd7+/– 19.a4 Kf7 20.g4 Ne5 21.Qf4 Qe6 22.g5 Qf5 23.Qf5+– gf5 24.gf6 Ng4 25.h3 Nf6 26.Kh2 Rhg8? 27.Rg1?? Rg1= 28.Kg1 Ne4 29.Bb4 c5 30.Bc3 Nc3 31.dc3 Kf6 32.f4 Re8 33.Kf2+= Re4 34.a5 Rc4 35.Ra3 d4 36.cd4 cd4 37.ed4 Rd4 38.Kf3 Rc4 39.c3 Ke6+/– 40.h4 ½–½. mic (2200) – flgs (2095), net–chess.com, 2008.

5.Be2 d5 6.d4 e5 7.c4 (7.de5 Ne4 8.Bb2 Bb4 9.Kf1 Qh4=) 7...ed4=+ 8.ed4 (8.Qd4 Na6 9.a3 Nc5=+) 8...Bd6 (8...dc4!? 9.Nf3 b5-+) 9.Nf3 (9.c5 Bc7=) 9...0-0 (9...dc4 10.Bc4 Qe7 11.Be3=+) 10.0-0 (10.c5 Bc7=) 10...Bc7 (10...dc4 11.Bc4 b5 12.Bd3=+) 11.c5= Bf5 12.g3 (12.Re1 Re8=) 12...Nbd7 13.Bd3 Bh3 (13...Ne4 14.Bg5 Ng5 15.Bf5-/+) 14.Re1= Re8 15.Bf1 (15.Re8 Qe8 16.Be3 Ne4=) 15...Bg4 (15...Bf1 16.Re8 Qe8 17.Kf1-/+) 16.Be2 (16.Re8 Qe8 17.h3 Bh5=+) 16...Re7 (16...Ne4 17.Nfd2 Nd2 18.Nd2 Re2 19.Re2-/+) 17.Nc3 Qe8 18.Be3? (18.Qd3-/+) 18...Ne4?? (better 18...Re3 19.fe3 Qe3 20.Kg2 Qc3-+) 19.Ne4= de4 20.Nd2 Be2 21.Qe2 Nf6 (21...Ba5 22.Red1=+) 22.Rac1 (better 22.Bg5!? Ba5 23.Bf6 gf6 24.Qg4 Kh8 25.Rad1+=) 22...Nd5 23.Rc2 (23.Nc4 Qd7=+ (worse 23...Ne3 24.fe3 Ra7 25.a3=)) 23...Ra7 (23...Nb4 24.Rc4 Nd3 25.Ra1-/+) 24.Nb3 Nb4 25.Rb2? (25.Rd2=+) 25...Nd5 (better 25...Nd3-+) 26.Qc4 (26.Rc2 f5-/+) 26...Qa8 27.Qe2 Ra4 (worse 27...Ne3 28.fe3 Qc8 29.Qh5=) 28.Qc2? (better 28.Qg4=+) 28...Nc3?? (better 28...Nb4 29.Qb1 Nd3-+ (29...Ra2 30.Ra2 Na2 31.Bd2+=; 29...Na2?! 30.Bd2=)) 29.Qc3+- Ra2 (29...Ra3 30.Bg5 Re6+-) 30.Ra2 Qa2 31.Ra1 Qe2 (31...Qa1 32.Qa1 Re8+-) 32.Rf1 (32.Ra8 Bb8 33.Rb8 Re8 34.Re8) 32...Qf3 (32...Bd8 33.Bg5 f6 34.Bf4+-) 33.Qd2 h5 (33...Bd8 34.d5 Rd7 35.d6+-) 34.Qd1 (34.d5 cd5 35.Qd5 Qg4+-) 34...Qf6 (34...Qf5 35.Qa1+-) 35.Qe2 (35.Qh5!? Re8+-) 35...g6 36.f4 (36.Qd2 Re8+-) 36...Qf5 37.Qf2 h4 38.Nd2 h3 (38...hg3 39.Qg3 f6 40.Kf2+-) 39.Re1 Qg4 (39...Qe6 40.Rb1+-) 40.Qf1 (40.Rb1 Qc8+-) 40...Bd8 (40...Ba5+-) 41.Qf2 Kg7?? (41...Bc7 42.Rb1 Qc8+-) 42.Nf1 (42.Nc4 Qd7+-) 42...Re8 (42...Rd7 43.Bd2+-) 43.Bd2 Rh8 (43...Qe6 44.Bc3 Kg8 45.Qb2+-) 44.Ne3 (better 44.Re4 Bf6 45.Ne3+-) 44...Qg3 (44...Qd7+-) 45.Qg3 Bf6 46.Kf2 (better 46.Nf5! Kh7 47.Kh1 Rb8+-) 46...Rh5 47.Qg6! fg6 (47...fg6 48.Nc2 Combination; 47...Kg6 48.Rg1 Decoy) 48.Rg1 (better 48.Rb1 Bd4 49.Rb7 Kg8 50.Re7+-) 48...Bh4?? (48...Bd4 49.Rb1 Rc5 50.Rb7 Kf6 51.Rb4+-) 49.Rg3! Bg3 50.Kg3 (50.hg3?? h2 51.Ng2 h1Q-+) 50...Rg5?? (better 50...Kf6!?+/-) 51.Kf2 (better 51.fg5 Kf8 52.Kh4+-) 51...Rg4?? (51...Rh5+-) 52.Ng2 (52.Ng2 Rg2 53.Ke1 Rh2 54.f5 Rd2 55.Kd2 gf5 56.d5-+). BitChess (2385) - Supelyel (2370), Rated Bullet game, lichess.org, 2016.

5.Be2 e5 6.Bb2 d6 7.Nf3+=.

3.a4 Bb7 4.Bb2 (--> 1.b4 b6 2.Bb2 Bb7 3.a4 Nf6 4.b5).

3.Bb2 c5 4.a4 Bb7 5.Na3 e6 6.c4 d5 7.e3 Be7 8.Nf3 0-0 9.Be2 Nbd7 10.d4 cd4 11.Nd4 dc4 12.Nc4 Bg2-/+ 13.Rg1 Bd5 14.Nc6 Qe8 15.N4e5 Ne5 16.Ne5 Rd8 17.Qc2 Be4 18.Qb3 Bg6 19.Bf3 Nd5 20.Nc6 Qd7 21.Rd1+/– f5?? 22.Ne5 Qe8+/– 23.Ng6 hg6 24.Be5 Bf6 25.Bg3 Qf7= 26.Rd3 Rc8 27.Bd5 ed5+= 28.Kf1 Rc1 29.Kg2 Rg1 30.Kg1 Rd8 31.Qd1 g5 32.f4 gf4-/+ 33.ef4 d4 34.Kf2 Qe6 35.Qe1 Qe1 36.Ke1 Re8 37.Kd2 1–0. poganinbezdom (1640) – emarko (1695), kurnik, 2012.

3.Bb2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.b5 b6).

3.Bb2 e5 4.Nc3 (4.Be5!? a6 5.e3+=) 4...Bb7 (4...d5 5.Nf3 Bd6 6.e3+=) 5.e3 (5.Nf3 e4 6.Nd4 a6=) 5...c6 (5...a6 6.Nf3=) 6.Nf3 cb5 7.Nb5 (7.Bb5 a6 8.Ba4 Qc7=) 7...e4 (7...a6 8.Nc3 Nc6 9.Be2+=) 8.Nfd4 (8.Nh4 a6 9.Bf6 gf6=) 8...Nc6 (8...a6 9.Nc3=) 9.Nf5 Qb8 (9...d5 10.Rb1=) 10.Ba3 (10.Bf6 gf6 11.f3 ef3 12.gf3+= (worse is 12.Qf3 Nd4 13.Nbd6 Bd6 14.Nd6 Ke7-/+)) 10...Ba3= 11.Na3 g6 12.Ng3 0-0 13.Be2 a5 14.c3 Ne5 15.0-0 Ba6 16.Ba6+= Ra6 17.Qc2 Qb7 18.Nb5 Ne8? 19.Ne4+/– Qd5? 20.Nd4 f5+/– 21.Ng3 Nc6 22.Nc6 dc6+/– 23.c4 Qe6 24.d3 h5 25.c5 h4 26.Ne2 Nf6? 27.Nf4 Qe7 28.Ng6 Kf7 29.Ne7 Ke7 30.cb6 Rb8 31.Qc5 Kf7 32.Qc4 (32.Qc4 Nd5 33.Qa6 Rb6 34.Qa7 Kg6 35.e4+–) 1–0. mic (2200) – flaviolucas (2135), net–chess.com, 2008.

3.Bb2 e6 4.c4 Be7 5.Nc3 0-0 6.Nf3 Bb7 7.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Nc3).

3.Nc3 Bb7 4.e3 (4.Nf3 a6=) 4...e6 (4...a6 5.Nf3=) 5.Nf3 Be7 6.Be2 0-0 (6...a6 7.0-0=) 7.0-0 a6 8.Bb2 ab5 9.Nb5 (9.Bb5 Nc6=) 9...c6 (9...Nc6 10.c4=) 10.Nbd4= d5 11.c4 Nbd7 12.cd5 Nd5 13.Qc1 c5 14.Nb3 Bf6 15.d4 cd4 16.Nfd4 Qc8 17.Qc8 Rfc8+= 18.Rfb1 Ne5 19.h3=. mic (2115) – glimmung (2435), net–chess.com, 2008.

3.Nc3 d5 4.Nf3=.

3.c4 a6 4.Nc3 ab5 5.cb5 d5 6.e3 e5 7.Nf3 Bd6 8.Be2 0-0 9.0-0 Bd7 (9...e4 10.Nd4=+) 10.d4= e4 11.Ne5 Be6 12.f3 Nbd7?? (12...ef3 13.Bf3 c5 14.bc6 Nc6 15.Nc6=) 13.Nd7?? (better 13.Nc6 Qc8 14.fe4+-) 13...Bd7 14.fe4 de4 15.a4 Qe8 16.Bc4 Bb4 (16...Be6 17.Qb3 Bc4 18.Qc4 Qe7=) 17.Nd5 (better 17.Qb3!? Bd6 18.Ba3+=) 17...Nd5-/+ 18.Bd5 Ra7?? (18...Bb5 19.Ba8 Bf1 20.Be4 Qe4 21.Qf1=+) 19.Qh5 (better 19.Rb1!? Bd6 20.Qc2+/-) 19...g6 (19...Bb5 20.Rf7 Rf7 21.Bf7 Qf7 22.Qb5=) 20.Qh6= Bb5 21.Rf4 Be7 (21...Ra4?? 22.Rh4 Ra1 23.Qh7; 21...Ba4?? 22.Rh4 c5 23.Qh7) 22.Ra2 (better 22.Be4!? Ra4 23.Bb2 Ra1 24.Ba1=+) 22...Bc6-/+ (22...Ra4?! 23.Ba3 Ra3 24.Ra3=; 22...Ba4 23.Raf2 (23.Re4 Qd8 24.Bc4 Bg5-+; worse 23.Be4 Qd7=+) 23...Bc6 24.Rf7 Qf7 25.Rf7 Rf7 26.Bf7 (26.Bc6?? Ra1 27.h4 Rc1 28.Kh2 Bf8 29.Qf8 Kf8 30.Be4 b5-+) 26...Kf7 27.Qh7 Kf6 28.Qg8+-) 23.Be4 Be4 (23...Ra5 24.d5 Bd5 25.Bb2-/+) 24.Re4=+ Qd8 25.Bb2?? (better 25.Re5-/+) 25...Bg5-+ 26.Qh3 Bf6 (better 26...Qd5 27.Re5 Qa2 28.Rg5 Qb1 29.Kf2 Qb2 30.Kf3 Ra4-+) 27.Qf3 (27.Ra1 Re8 28.Qf3 Bg7=+) 27...Bg7 28.Ba3 Re8 (worse 28...Ra4 29.Be7 Qd7 30.Ra4 Qa4 31.Bf8 Bf8 32.d5 Qa1 33.Qf1 Qf1 34.Kf1+/-) 29.Rf4 (29.Bb4 Re4 30.Qe4 Qd7=+) 29...Qd7 (29...Ra4 30.Be7 Qd7 31.Ra4 Qa4 32.Bg5 Qa1 33.Kf2 Qb2 34.Qe2 Qe2 35.Ke2-+) 30.Rf2 (30.Bc1 f5-/+) 30...c6 (30...f5 31.Qe2-/+) 31.Qe2 Qe6 32.R2f3? (32.Bc1 f5-/+ (32...Ra4? 33.d5 cd5 34.Ra4+-)) 32...Rd8 (32...g5 33.Rf5 g4 34.R3f4 Qe3 35.Qe3 Re3 36.Bb4 Ra4 37.Rg4-+) 33.Rh4 (33.Qc2 f5 34.Bc1 Rda8-/+) 33...Rd4! 34.Rd4 (34.ed4 Qe2 Pinning (34...Qe2 Deflection); 34.Rd4 Bd4 Combination) 34...Bd4 35.Bc1 (better 35.Qd2 Bf6 36.Bb2-/+) 35...Ra4?? (better 35...Be5 36.Qc2 b5 37.ab5 cb5-+) 36.Kh1?? (better 36.Qd1 Qc4 37.ed4 Qd4 38.Qd4 Rd4 39.Be3=) 36...Ra1-+ 37.Qc2 (37.Rf1 Be3! 38.Bb2-+) 37...Be3 (better 37...Qb3 38.Qd2 Qc4-+) 38.Re3 (38.Rf1 Bc1 39.Qd1-+) 38...Qe3 39.Qc6 Rc1 (39...Qe1) 40.Qc1 Qc1 0-1. Zpytasz (1795) - terri (2130), Rated Rapid game, lichess.org, 2016.

3.c4 d5 4.Na3 (4.cd5 a6=) 4...e6 5.e3 g6 (5...a6!? 6.Qa4 Bd6=+) 6.Bb2 Nbd7 7.Nf3 a6 8.ba6 (8...Ba3 9.Ba3 Ba6 10.Qc1=+; 8.Nd4!? Ba3 9.Ba3=). Franziska,Franzi – Schley,Martin, remoteschach.de, 2002.

3.e3 a6 4.c4 e5 5.Nc3 Bb7 6.Bb2 Bb4 7.Qb3 Ba5 (7...Bc3 8.Qc3 d6 9.Nf3=) 8.Nf3 e4 9.Nd4 0-0 10.Be2 ab5 11.cb5 c5 12.Nf5 (12.bc6 dc6 13.0-0 c5=) 12...d5=+ 13.0-0 Qd7 14.g4 Re8 (14...h5 15.h3=+) 15.Na4 Re6 (better 15...Qe6 16.Bf6 Qf6=+) 16.Bc3?? (better 16.g5 Ne8 17.Bh5=) 16...Ng4-+ 17.Bg4 Rg6 18.h3 Qf5 19.Kh2 Rg4 (19...Qg5 20.Rg1-+) 20.hg4 Qg4 21.Rg1? (21.Rh1 Bc3 22.Nc3-+) 21...Qh5 22.Kg2 d4! 23.Ba5 (23.ed4 Bc3 Double attack (23...Bc3 Decoy)) 23...Ra5 (23...ba5?! 24.Qd1 Qf5 25.Kf1=) 24.Nb6 Qg6 25.Kf1 Qb6 26.a4 Nc6! 27.Qd5 (27.bc6 Qa6 Double attack (27...Qb3 Pinning; 27...Qb3 Deflection; 27...Qa6 Decoy)) 27...Nd8 (27...Nb4!? 28.Qe5 g6 29.Qb8 Kg7 30.Qe5 Qf6 31.Qf6 Kf6 32.Rc1 Ra4 33.Rc5-+) 28.Qe5 Ne6 29.Qb8 (29.Rg7 Ng7 30.Qb8 Ne8 31.Qe8 Kg7 32.Qe5 Qf6 33.Qg3 Kh6 34.Qh3 Kg6 35.Qg3 Qg5 36.Qd6 f6 37.Qe7-+) 29...Nd8 (29...Nf8 30.Qe5 g6 31.Kg2-+) 30.Qe5 Ne6 31.Qb8 Nf8 32.Qe5 (32.ed4 cd4 33.Rg5 Qh6-+) 32...g6 33.Kg2 Ne6 34.Rh1 Qc7 (better 34...h5!? 35.Rhg1-+) 35.Qc7 Nc7 36.Rhc1 (36.Kg3 h5-+) 36...Ne6 37.b6 Kf8 38.Rcb1 Ke7 39.Rb5 (39.Kg3 h5-+) 39...Rb5 40.ab5 h5 41.Ra7 (41.Kg3 g5-+) 41...Nd8 42.Ra4 (42.Kg3 g5-+) 42...d3 43.Kg3 g5 44.Rc4 (44.Ra3 f5 45.Ra1 Kd6-+) 44…Kd6 0–1. Silent Move (2115) – grooverider (1995), redhotpawn.com, 2014.

4.c4 ab5 5.cb5 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.c4 ab5 5.cb5 b6).

4.c4 e6 5.e3 Be7 (5...d5 6.cd5 ed5 7.Nf3=) 6.g4 (6.Nf3!?=) 6...0-0 7.g5 Ne4 8.h4 ab5 9.cb5 d5 10.d3 (10.Qc2 Bb7-/+) 10...Nc5 (10...Bb4 11.Ke2 Nc5 12.a3-/+) 11.f4 f5 (11...Qd7!? 12.Qd2 Na4-/+ (< 12...Qb5 13.d4 Qa4 14.dc5+/–)) 12.Nf3 Nbd7 13.Ne5 (13.h5!?=) 13...Ne5 14.Be5 Bd6 15.Bd4 Qd7 (15...Qe8!? 16.Nc3 Bd7=+) 16.Nc3 c6 17.Rb1 cb5 18.Rb5 (18.Nb5 Ra2 19.Nd6 Qd6=+) 18...Bc7 (18...Na4 19.Qb1-/+) 19.Bc5 (better is 19.g6=) 19...bc5-+ 20.Rc5 Bb6 21.Rb5 Be3 22.Qf3?? (22.Bg2 Bf4 23.0-0 Bb8-+) 22...d4 23.Qa8?? dc3 24.Rb8 Bd2 25.Kd1 Bf4 26.Bg2?? Bb8 27.Qb8 Bb7!! 28.Qb7 Qd3 29.Kc1 Qd2 30.Kb1 c2 31.Ka1 c1Q 32.Rc1 Qc1 33.Qb1 Qc3 34.Qb2 Qe1 35.Qb1 Qh4 36.g6 Qf6 37.Qb2 Qg6 38.a4 Qf6 39.Qf6 gf6 40.Bc6 f4 41.Kb1 h5 42.Kc1 f5 43.Kd1 Rd8 44.Ke1 Rd6 45.Bf3 e5 46.a5 e4 47.Bh5 Ra6 48.Kf2 Ra5 49.Bg6 e3 50.Ke2 Kg7 51.Bh5 Kh6 (52.Bf3 Ra2 53.Kd3 Rd2 54.Kc3 Rf2-+) 0–1. MasterofDisaster – maxim, Caissa.com, 2004.

(--> 1.b4 b6 2.Bb2 Bb7 3.b5 Nf6).

4.a4 (--> 1.b4 b6 2.Bb2 Bb7 3.a4 Nf6 4.b5).

4.c4 e6 5.e3 Be7 6.Nc3 0-0 7.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Nc3).

4.a4 d5 5.c5 bc5 6.Na3 c6 7.a5 cb5 8.a6 Bc6 9.d4 b4 10.dc5 ba3 11.Nf3 e6 12.Nd4 Bc5 13.Nc6 Nc6 14.e3 Qe7 15.Bb5 Bb4 16.Bd2 Bd2 17.Qd2 Rc8 18.Rc1 Qd6 19.Qc2 0-0 20.Bc6 Rc7 21.Qa4 Rfc8 22.0-0 Rc6 23.Ra1 Rc5 24.Qa3 R5c6 25.Qa2 Rb8 26.Qe2 Rbb6 27.Qf3 Ra6 28.Rab1 Rab6 29.Ra1 Nd7 30.Rad1 Ne5 31.Qg3 Ng6 32.Qh3 Qe7 33.e4 Qf6 34.ed5 ed5 35.Rd5 Qe6 36.Rf5 Nf8 37.Qf3 Qg6 38.Rf4 Rf6 39.Rf6 Rf6 40.Qh3 h6 41.Re1 Qh7 42.Re8 Qg6 43.Qc8 Kh7 44.Rf8 h5 45.Rh8 1-0. Lance5500 (2650) - TimC (2320), Rated Bullet game, lichess.org.

4.Bb2 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.c4 Bb7).

4.Bb2= Bg7 5.a4 (5.e4 d6=) 5...Bb7 (5...0-0 6.d4=) 6.Nf3 0-0 7.Nc3 (7.d4 Bf3 8.gf3 a6=) 7...d6 (7...a6 8.d4=) 8.e3= a6 (8...e5 9.a5=) 9.Be2 ab5 (9...e5 10.d4=) 10.ab5+= Nbd7 (10...Ra1 11.Qa1 e5 12.Qa7+=) 11.0-0 (11.Ra8 Qa8 12.d4 d5+=) 11...Nc5 12.d4 Nce4 13.Bd3 Nc3 14.Bc3 Ne4 15.Bb2 c5 16.Ra8 Ba8 17.Qc2 Nf6 18.d5 e6 19.e4 ed5 20.ed5 Re8 21.h3 Bb7+= 22.Bc3 Bc8 23.Ra1+/– Bd7 24.Kf1 Re7 25.Ra7 Ne8 26.Bg7 Kg7 27.h4 h5 28.Qa2 Nf6 29.Qa1 Re8 30.Ng5 Qe7? 31.Ne4+– Kh6?? 32.Nf6 Rd8 33.Nd7 (33.Nd7 Qh4 34.Kg1+–) 1–0. mic (2120) – ironhorse (2320), net–chess.com, 2008.

4.Nf3 Bg7 5.Bb2 0-0 6.Qc2 a6 7.e4 d6 8.Be2 c5 9.bc6 Nc6 10.0-0 Bb7 11.d3 Rc8 12.Nbd2 b5 13.Rab1 e5 14.Bc3 bc4?? 15.Rb7+– cd3 16.Qd3 (16...d5 17.Rc1+– (17.Qa6?! de4 18.Ng5 Nd5+–; 17.Ne5?! de4 18.Ne4 Qd3 19.Bd3 Ne4 20.Nc6 Nc3 21.Ne7 Kh8 22.Nc8 Rc8+–; 17.Be5?! de4 18.Ne4 Qd3 19.Bd3 Ne5 20.Ne5 Ne4 21.Ng6 hg6 22.Be4 Rfd8+=)) 1–0. pierred – tomh_03, Yahoo, 2005.

4.Nf3 a6 5.c4 ab5 6.cb5 g6 7.Bb2 Bg7 8.g3 (8.d4 0-0=) 8...0-0=+ 9.Bg2 d6 10.0-0 e5 (10...c5 11.Nc3=+) 11.d3 Ng4 (11...Nbd7 12.Nc3=+) 12.e4 (12.h3 Nf6=) 12...c6 (12...Nd7 13.Nfd2 h5 14.Nc3=) 13.a4 cb5 14.ab5 Ra1 15.Ba1 Nd7 16.Nc3 Ngf6 17.h4 (17.Re1 Qc7=) 17...Qc7=+ 18.Bh3 Rd8 19.Ne2 (19.Qe2!?=+) 19...d5-/+ 20.ed5 Nd5 (worse 20...Bd5 21.Nc3=+) 21.Qb3 (21.Qd2 Nc5 22.d4 Nb3-/+) 21...Nc5-+ 22.Qc2?? (better 22.Qc4 Ra8 23.d4-+) 22...Nb4 23.Qb1 (23.Qc4 Bf3 24.d4 Be2 25.Qe2 ed4-+) 23...Bf3 24.Qb4 Be2 25.Re1 (25.Rc1-+) 25...Nd3 26.Qd2 Bf3 (26...Bf3 27.Re3 Nf4 28.Qd8 Qd8 29.gf4 e4-+) 0-1. Bushwacker (1875) - Thinking Blonde (2165), ChessWorld.net, 2007.

4.Nf3 e6 5.Nc3 Bb4 6.Bb2 0-0 7.Bd3 a6 8.a3 Be7 9.0-0 d5 10.a4= a5 11.Be2 Ne4 12.d4 Nc3 13.Bc3 Bb4 14.Qd3 Bc3 15.Qc3 Nd7 16.Rfc1 Nf6 17.Qd3 c6 18.Ng5 Ne4 19.Ne4+– de4 20.Qe4 Qc7 21.Bf3 c5?? 22.Qb7+– Qb7 23.Bb7 Ra7 24.Bc6 cd4 25.ed4 Rc7 26.c4 Rd8 27.d5 ed5 28.cd5 Rd6 29.Re1 g6 30.Re8 Kg7 31.Rb8 Re7 32.Rb6 Re2 33.Ra6 Rf6 34.f3 Rf4 35.b6 Rb4 36.b7 Rbb2 37.Kh1 Rg2 38.b8Q Rb8 39.Kg2 (39.Kg2 Kf6 40.d6+–) 1–0. Tiedemann,Joern (1940) – Pieleck,Rudi (1800), RSX20E – NoEngine–Grossturnier–1, 2010.

3.a4 a6 4.c4 ab5 5.cb5 cb5 6.e3 ba4 7.Ra4 Ra4 8.Qa4 Nc6 9.Bb5 e6 (9...e5 10.Bb2-/+) 10.Nf3=+ Bd6 11.0-0 0-0 12.d4 Nd5 13.Bd3 Qa5 14.Qc2 (14.Qa5 Na5 15.Ba3 Ba3 16.Na3 Nb4=+) 14...g6 (14...Ndb4!? 15.Qb3 Nd3 16.Qd3 b6-/+) 15.e4 Ndb4 16.Qd2 Nd3 17.Qd3 b5 18.e5 (18.Bh6 Re8=) 18...Bb4 (18...Be7 19.Bh6 Rd8 20.Bg5=+) 19.Bh6= Re8 20.Rd1 Bf8 (20...d6 21.Rc1 Bb7 22.Bd2=+) 21.Bg5 (21.Bf8 Rf8 22.Nc3 b4=) 21...b4 22.Nbd2 Ba6 23.Qb3 (23.Qe3!?=+) 23...Qa3-/+ 24.Qa3 (24.Re1!?-/+) 24...ba3-+ 25.Nb3 (25.Ne4 Ra8 26.Ra1 Be2-+) 25...Be2 26.Rd2?! (26.Ra1-+) 26...Bf3 27.gf3 Rb8 28.Nc5 (28.Nc1-+) 28...Rb2 29.Rd1 (29.Kg2 Bc5 30.dc5-+) 29...a2 30.Bc1 (30.Kg2 Rb1 31.Rb1 ab1Q 32.Nd7 Nd4 33.Nf6 Kh8-+) 30...Rb1 31.Ne4 a1Q 32.Nf6 Kh8 33.Nd7 Rc1 34.Rc1 Qc1 35.Kg2 Bh6 36.Nf6 Nd4 37.Ne4 (37.Nh7 Ne2 38.h4 Qg1 39.Kh3 Nf4) 37...Qf4 (37...Ne2 38.Kh3 Nf4 39.Kg4 Qg1 40.Ng3 Qh2 41.Nf5 ef5) 38.h4 (38.Nd2 Qg5 39.Kf1 Qd2 40.h3 Be3 41.fe3 Qe2 42.Kg1 Nf3 43.Kh1 Qf1) 38...Qf3 39.Kh2 0-1. Zpytasz (1785) - moltshun (2200), Rated Rapid game, lichess.org, 2016.

3.a4 c5 4.Bb2 e6 5.c4 Be7 6.e3 0-0 7.Nf3 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 c5).

3.a4 d6 4.Bb2 e5 5.e3 Be6 6.g3 (6.Nf3 Be7=+) 6...Nbd7 7.Bg2 Bd5 (7...a6 8.Ne2=+) 8.f3 e4 (better is 8...Qb6!?=+) 9.Nc3+= ef3 (9...Ne5 10.Ne4 Nf3 11.Bf3 Be4 12.Bf6 Bf3 13.Qf3 (13.Bd8?! Bd1 14.Kd1 Rd8=) 13...Qf6 14.Qf6 gf6 15.Ne2+/–) 10.Nf3 Nb6 (10...Bf3 11.Qf3 d5 12.Qf4+=) 11.0-0 (11.Nd5 Nbd5 12.0-0 Rc8+/–) 11...Nc4 (11...Bf3 12.Qf3 d5 13.Ne2+/–) 12.Nd5 Nb2 (better is 12...Nd5!? 13.Bd4 c5+–) 13.Nf6+– Qf6 (13...gf6 14.Qe2 d5+–) 14.Nd4?? (better is 14.Qb1 Nc4 15.bc6 Qb2+–) 14...Qg6?? (14...Qd4 15.ed4 Nd1 16.bc6 b6+–) 15.bc6 Ke7?? 16.cb7+– Re8 17.Nc6 Kd7 18.b8Q Rb8 19.Nb8 Kc7 20.Qf3 Kb8 21.Qb7 1–0. MasterofDisaster – DoubleMint, Caissa.com, 2004.

3.Bb2 cb5 4.Bf6 gf6 5.e3 Bg7 (5...b4 6.c4+=) 6.Nf3 (6.Bb5 a6 7.Be2 d5=) 6...f5 7.Bb5?? (better is 7.c3+=) 7...Ba1-+ 8.Nc3 (8.Na3 Bf6-+) 8...Bc3 9.dc3 a6 10.Ba4 Qa5 11.Bb3 Qc3 12.Nd2 Nc6 13.0-0 0-0 14.Nf3 Kh8 15.Ng5 Qg7 16.Qh5 e6 17.c4 Ne5 18.f4 Ng6 19.Qe2 b6 20.g3 Bb7 21.h4 f6 22.Nf3 Nh4! 23.Nh4 Qg3 24.Ng2 Rg8 25.Rf2 Rg7 26.Kf1 Rag8 27.Bd1 Bg2 28.Ke1 Qh2 29.Kd2 Qh3 30.Kc3 e5 31.fe5 fe5 32.Qd2 Rg3 33.Re2 Bf1 34.Re1 Bc4! 35.Kc4 Rc8 36.Kb3 f4 37.Kb2 fe3 38.Qd6 Rg2 39.Be2 Qf5 40.Qb6 Qc2 41.Ka3 Rc3 42.Kb4 Qb2 43.Ka5 Ra3# (43...Qa3#) 0–1. poganinbezdom (1675) – toniv, kurnik, 2012.

3.c4 d5 4.e3 dc4 5.Bc4 cb5 6.Bb5 Bd7 7.a4 e5 8.Nf3 Nc6 9.Bb2 e4 10.Ng5 h6 11.Nh3 Bd6 12.0-0 0-0 13.Nf4 Qc7 14.d4 Bf4-/+ 15.ef4 Qf4 16.d5 Ne5 17.Be5? Qe5-+ 18.Na3 Rfd8 19.d6 Ng4 20.Nc4?? Qh2 0–1. NN – Fournier,Frederic (2080), Active, 2004.

3.e3 d5 4.c3 g6 (4...e5 5.d4 Nbd7 6.bc6 bc6 7.Nf3=+) 5.Ba3 (5.Nf3 Bg7=+) 5...Bg7 6.Bc5 (6.Nf3 0-0=+) 6...0-0 7.g3 (7.Bd4 Nbd7 8.bc6 bc6-/+) 7...Ne4 (7...Bf5 8.f3-/+) 8.Bd4 (better is 8.Ba3!?-/+) 8...e5-+ 9.f3 ed4 10.fe4 dc3 (10...de3 11.de3 Qb6 12.ed5 Qe3 13.Ne2 cb5 14.Bg2-+) 11.dc3 (11.Nc3 de4 12.Rc1 Be6-+) 11...de4 12.Qd8 Rd8 13.bc6 (13.Ne2 cb5 14.Nd2 Rd3-+) 13...Nc6 14.Bc4 (14.a3 Ne5-+) 14...Ne5 15.Bb5 Bd7 16.a4 Nd3 17.Bd3 ed3 18.Nd2 Be6 19.Ngf3 Rac8 20.Ng5 Rc3 21.Nf7 Bf7 22.Ne4 Rc4 23.Ng5 Ba1 24.Nf7 Kf7 25.Rf1 Kg7 26.h4 0-1. blacksteelballs - MORDY7, Live Game Caissa's Web, 2005.

3.e3 g6 4.Bb2 Bg7 5.Nf3 0-0 6.Be2 cb5 7.Bb5 Nc6 8.0-0 d6 9.Nc3 Bg4 10.h3 Bd7 11.a4 Qc7 12.d4 d5 13.Ba3 Rfe8 14.Bd3 (14.Rb1+=) 14...e6 (better is 14...Nd4 15.ed4 Qc3-/+) 15.Nb5+= Qa5 16.Bd6 (16.c4 Ne4+=) 16...Rac8= 17.Bh2 Bf8 18.Nd2 a6 19.Nb3 Qd8 20.Nd6 Bd6 21.Bd6 Kg7 22.Nc5 Na5 23.Nd7 Qd7 24.Be5 Nc4 25.Bc4 Rc4 26.Qf3 Qe7+= 27.g4 g5 28.Rfb1+/– Rc2?? 29.Rb7+– Qd8 30.Rb8 Qb8 31.Qf6 Kf8 32.Bb8 (32.Bb8 Rb8 33.Qh8 Ke7 34.Qb8+–) 1–0. mic (2200) – thorr (2355), net–chess.com, 2009.

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

4.e3 e5 5.Nf3 Bd6 6.Bb2 Bg4 7.Be2 Bf3 8.Bf3 e4 9.Be2 0-0 10.c4 Re8 11.h3 Be5 12.Nc3 d4 13.ed4 Bd4 14.0-0 cb5 15.ab5 Nbd7 16.Qc2 Nc5 17.Ra2 Qc7 18.Ba3 Rad8 19.Bb4 Nd3 20.Qb3?? Nf2-+ 21.Rf2 Qg3 22.Nd1 Qb3 0–1. blackiwhite (1715) – dudziopwr (1840), kurnik, 2011.

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

4.Bb2 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Be7 4.e3 c6).

(--> 1.b4 d5 2.b5 Nf6).

3.e3 e5 (--> 1.b4 e5 2.b5 d5 3.e3 Nf6).

3.e3 g6 4.Bb2 Bg7 5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0-0 5.Nf3 d5).

3.h3 e6 4.Bb2 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 d5 4.h3).

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

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

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

4.a4 c5 5.e3 a6 6.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 a6 6.a4).

4.a4 Bd6 5.e3 0-0 6.Nf3 Nbd7 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0 7.a4).

4.e3 a6 5.a4 c5 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 a6 6.a4).

4.e3 Be7 5.Nf3 0-0 6.Be2 c5 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2).

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

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

4.Bb2 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7).

(--> 1.b4 e5 2.b5 Nf6).

3.Bb2 (--> 1.b4 e5 2.Bb2 Nf6 3.b5).

3.Bb2 Bc5 (--> 1.b4 e5 2.b5 Bc5 3.Bb2 Nf6).

3.Bb2 d6 4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

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

3.Bb2 d6 4.e3 g6 5.Nf3 Bg7 6.c4 0-0 7.Be2 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.b5).

3.Bb2 e4 4.e3 (--> 1.b4 e5 2.Bb2 e4 3.e3 Nf6 4.b5).

3.a3 Bg7 4.Bb2 0-0 5.e4 (5.Nf3 a6=+) 5...d5 (5...Ne4 6.Bg7 Kg7 7.Bd3-/+) 6.d4? (better 6.ed5!? Qd5 7.Nc3=) 6...Ne4-+ 7.c4 (7.Nd2 Bf5-+) 7...Nf6 (7...dc4 8.Bc4 c6 9.bc6 Nc6 10.Ne2-+) 8.Nc3 e6 (8...a6 9.Nf3-/+) 9.cd5 (better 9.c5-/+) 9...e5?? (9...ed5 10.Nf3-/+) 10.Qb3?? (better 10.de5 Ng4 11.e6+/-) 10...ed4-+ 11.Nce2 Nd5 12.Nd4 c5 13.Nde2?? (13.bc6 Nc6 14.Nc6 bc6-+) 13...Be6 (better 13...Qa5 14.Kd1 Rd8-+) 14.Bg7 Kg7 15.Qb2 Qf6 (15...f6 16.Nc3-+) 16.Nf3?? (better 16.Qf6 Kf6 17.Ng3-/+) 16…Qb2-+ (16...Qb2 17.Rd1 Nc3-+) 0-1. BitChess (2415) - JaffaCakes (2415), Rated Bullet game, lichess.org, 2016.

3.a4 c5 4.c4 Bg7 5.Bb2 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0-0 5.c4 c5).

3.a4 Bg7 4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4).

3.Nc3 Bg7 4.d4 d5 5.Bg5 Nbd7 6.Nf3 0-0 7.e3 e6 8.Bd3 b6 9.0-0 Bb7 10.a4 c6 11.Ne5 Ne5 12.de5 h6 13.Bf6 Bf6 14.ef6 Qf6 15.Qg4 Qc3 16.Be2 Qc2 17.Bf3 Qc5 18.e4 cb5 19.Rac1 Qd6 20.ab5 de4 21.Be4 Be4 22.Qe4 Rac8 23.Qb7 Rc1 24.Rc1 Rd8 25.h3 Rd7 26.Qf3 Qb4 27.Rc8 Kg7 28.Qc6 Rd1 29.Kh2 Qf4 30.g3 Qf2 31.Qg2 Qd4 32.Rc2 e5 33.h4 e4 34.Qe2 h5 35.Kg2 Rg1 36.Kh2 Rd1 37.Qg2 e3 38.Re2 Rd2 39.Kh3 Qg4 White resigned 0-1. SPNxN (1810) - The Bin Man (1740), ChessWorld.net, 2010.

3.c4 Bg7-/+ 4.Nc3 0-0 5.Nf3 c6 (5...a6 6.d4-/+) 6.d4 a6 7.bc6 Nc6 8.Rb1 d5 9.c5 (better is 9.e3!?+=) 9...Ne4-+ 10.Bd2 (10.Bb2 Bf5 11.Rc1 Rb8-+) 10...Nd4 11.Nd4 Bd4 12.Ne4 de4 13.Qc2 e3! 14.fe3 (14.Be3 Bf5; 14.fe3 Be5) 14...Bg7 (14...Be5 15.g3-/+) 15.c6 (15.g3!?+=) 15...bc6-/+ 16.Qc6 (16.g3 Bf5 17.e4 Bg4-/+) 16...Be6 17.Qc5? (better is 17.e4-+) 17...Ba2 (17...Rc8 18.Qa5 Qd7 19.Bb4-+) 18.Rb6 (18.Rc1 Be6-+) 18...Rc8 19.Qa3 (19.Qa5 Rc2 20.Ra6 Qc8 21.Qa2 Ra2 22.Ra2 Rd8-+) 19...Bc4 (better is 19...Qb6 20.Bb4 Bd5-+) 20.e4 (20.Rb7 Qd5 21.Qb4-+) 20...Qb6 (20...Qb6 21.Qa5 Qb1 22.Kf2 Rfd8-+) 0–1. Ploetz,Thomas – Uneken,Bert, 2nd Arberopen, 2013.

3.d3 Bg7=+ 4.Na3? (4.d4 c5=+) 4...Nd5 (4...Ne4 5.de4 Ba1 6.e3-+) 5.Rb1? (better is 5.d4=+) 5...Nc3-+ 6.Qd2 Nb1 7.Nb1 0-0 (7...a6 8.ba6 Na6 9.e4-+) 8.Na3 (8.e4 a6-+) 8…a6 (9.ba6 Na6-+) 0–1. Jolilein – romain63, mySchach.de, 2005.

3.d4 a6=.

3.d4 Bg7 4.d5? (better is 4.Nd2=+) 4...Nd5!-+ 5.Qd5 Ba1 6.e3 Bg7 7.Bc4 e6 8.Qf3 d5 9.Bd3 Nd7 10.h4 Ne5 11.Qf4 Nd3 12.cd3 0-0 (12...a6 13.Qb4-+) 13.h5 Qf6 (better is 13...e5 14.Qg3 Bf5 15.hg6 fg6-+) 14.Qg3 (14.Qc7 Qf5-+) 14...Qe5 (14...Qa1 15.Ne2 Qb1 16.d4-+) 15.f4?? (15.Qe5 Be5 16.hg6 hg6 17.Nf3-+) 15...Qa1 16.hg6 fg6 17.Qh4 h6 18.Nf3 Qb1 19.Kd1 (19.Ke2 Qa2 20.Bd2 Bd7-+) 19...Qd3 20.Ke1 Qc3 (20...Qb5 21.Kf2-+) 21.Kf2 Qc2 22.Kg3 e5 23.fe5 (23.Kh2 a6 24.Ba3 Re8 25.ba6 Ra6-+) 23...Qe4 (better is 23...Be5 24.Qf4 Bf4 25.ef4-+) 24.Qe7 Qg4 25.Kf2 Be6 26.Rh4 Qg5 27.Qg5?? hg5 (28.Rh2 g4-+) 0-1. TomBombadil - exerpt, Caissa.com, 2004.

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.b5).

3.Bb2 Bg7 4.Nc3 a6 5.a4 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 a6 5.Nc3).

3.Bb2 Bg7 4.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5).

3.Bb2 Bg7 4.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5).

3.Bb2 Bg7 4.e3 0-0 5.a4 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0-0 5.e3).

3.Bb2 Bg7 4.e3 0-0 5.Nf3 c5 6.c4 a5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 a5 6.b5 c5).

3.Bb2 Bg7 4.e4 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 Bg7 4.b5).

3.Bb2 Bg7 4.e4 0-0 5.e5 Nd5 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 Bg7 4.e5 Nd5 5.b5 0-0).

3.Bb2 Bg7 4.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.b5).

3.Bb2 c6 4.Qc2 Bb7 5.c4 d6 6.Bf6 gf6 7.Nf3 Bg7 8.Nc3 Nd7 9.e3 Qc7 10.Qd3 Ne5 11.Ne5 fe5 12.Qf5 Bf6 13.Ne4 Bg7 14.Ng5 e6+= 15.Qc2 h6 16.Nf3 0-0-0 17.Be2 e4 18.Nd4 c5 19.bc5 dc5 20.Nb5 Qb8 21.Rc1 Bc6 22.a4 Rd7 23.Bg4 Rhd8 24.Rd1 f5 25.Be2 a6 26.Nc3 Qe5 27.h3 f4 28.ef4+= Qf4 29.0-0? Be5?? 30.g3-/+ Qf5 31.Bg4 Qg5?? 32.Ne4 Be4? 33.Qe4+– Kb8 34.d3?? Qf6 35.f4 Bd4 36.Kg2 Re7 37.Bf3 Kc8?? 38.Qa8 Kd7 39.Qa6 Ke8 40.Qb6 1–0. martin78ns – reza9911, kurnik, 2011.

3.Bb2 e6 4.g3 d5 5.Bg2 Bb7 6.h3 Nbd7 7.d4 Bd6 8.Qd2 0-0 9.Nf3 Rc8 10.Qd3 c5 11.a3 cd4 12.Nd4 a6 13.Nd2 Ne5 14.Qc2 Qc7 15.0-0 Ng6 16.N2f3 b5 17.Qd2 Ne4 18.Qe3 Ng3?? 19.fg3+/– Bg3 20.Bc1 Bf4 21.Qf2 Bd6 22.Nh4?? Ne5?? 23.Qg3 Qc3+= 24.Bh6?? Qg3-+ 25.Bf4 Qh4 26.Bh2 Qd4 27.Kh1 Rc2 28.Rad1 Qb2 29.Rb1 Qa3 30.Ra1 Qb4 31.Rac1 Rfc8 32.Rb1 Qc3 33.Rbe1 Qd2 34.Bf4 Qe2! 35.Re2 Re2 36.Kg1 Rcc2 37.Bf3 Nf3 38.Rf3 Rg2 39.Kf1 a5 40.Be3-+ b4 41.Bc5 Ba6 42.Ke1 Bc5 (42...Bc5 43.Kd1 Ra2 44.Rf2 Rg1 45.Rf1 Rf1#; 42...Rc1#) 0–1. martin78ns – calletano, kurnik, 2012.

4.Nd2 e6 5.Ngf3 c6 (5...d5 6.e3=) 6.e4+= a6 7.a3 d6 8.Be2 Nbd7 9.0-0 Qc7 10.Bb2 (10.Re1 d5=) 10...Be7 11.c4 d5 (11...0-0 12.d4=) 12.ed5 cd5= 13.cd5 Bd5 14.Re1 Qd6 15.Rc1 0-0 16.Rc2 Rfc8 17.Rc8 Rc8 18.Qb1 b5 19.Rc1 Rc1 20.Qc1 Bc6 21.h3 Nb6 22.Bd4 Nfd7 23.Qb2 Bf6 24.Bf6 Nf6 25.Kf1 h6 26.Ne5 Bd5 27.d4 Ne4 28.Ne4= Be4 29.f3 Bd5 30.Qc3 Nc4 31.Nc4 Bc4 32.Bc4 bc4?? 33.Qc4+– Kh7 34.a4 g6 35.b5 ab5 36.ab5 Qa3 37.Qc5 Qd3 38.Kg1 h5? 39.b6 Qe3 40.Kf1 e5 41.b7 Qd3?? 42.Kf2 Qd2 43.Kg1 Qe3 44.Kf1 Qd3+= 45.Ke1 Qb1 46.Kd2 Qb7+= 47.de5 Qb2= 48.Kd3 Qg2-/+ 49.Ke4 Qh3 50.Qe7 Qf5-+ 51.Ke3 Kg7 52.f4-/+ Qe6 53.Qg5? Qb6 54.Ke4-/+ Qc6 55.Ke3 Qc1 56.Kd4 Qd2 57.Ke4 Qe2 58.Kd5 Qf3 59.Kd6 Qd3 60.Ke7 Qf5-+ 61.Qf5?? gf5 (61...gf5 62.Kd6 h4-+) 0–1. alwayslosing (1945) – grahamtrue (2070), net–chess.com, 2008.

4.e4 e5 5.Nf3 d5 6.Ne5 Bd6 7.d4 Ne4 8.Bb5 c6 9.Qf3?? (better is 9.Bd3=) 9...Be5-+ 10.Bd3 Bc7 11.c4 (11.Be4 Qe7-+) 11...0-0 12.0-0 Nf6 13.Bg5 Qd6 14.g3 dc4 15.Bc4 Qd4 16.Na3 Nbd7 17.Rad1 Qb2 18.Rd7 Nd7 19.Be7 Ne5 (19...Ne5 20.Qb3 Qb3 21.Bb3 Rfe8-+) 0–1. rhometal (2070) – asoka (2500), net–chess.com, 2011.

4.Nf3 e6 5.Bg5 h6 6.Bh4 Be7 7.e4 Ba6 8.Be2+= c6 9.0-0 d6 10.Nbd2 Nbd7 11.h3 c5 12.a3 Qc8 13.Bf6 Bf6 14.Nh2 Bc3-/+ 15.Ra2 cb4 16.ab4 Bb4 17.Qa4 Ba5 18.Nb3-/+ Qc7 19.Rc1= Qb7 20.Na5 Qc8?? 21.Rc8+– Rc8 22.Nc6 Nc5 23.Qc2 Rc6 24.Ra6! 0-0 25.Ra7 Rfc8 26.Qb2 e5 27.Qa2 Rf8 28.Nf3 b5 29.Nh4 Na4 30.Ng6 Rc1 31.Kh2 Nc3 32.Qb3 Ne2 33.Nf8 (33.Nf8 Rc4 34.dc4+–) 1–0. bar (1905) – grahamtrue (2070), net–chess.com, 2008.

3.Bb2 d5 4.e3 g6 (4...e5 5.c4+=) 5.b5 (5.Nf3 Bg7=) 5...Bg7+= 6.bc6 bc6 7.Qc2 0-0 8.Nf3 Bg4 9.Be2 Ne4 10.h3 Be6 (10...Bf3 11.Bf3 Nd7 12.d3=) 11.d3 Nf6 12.d4 Qd7 13.Ne5 Qe8 14.a4 Ne4 15.Bf3 Be5 16.de5 Ng5 17.Be2= Bf5 18.Bd3 Bd3+= 19.Qd3 Ne4 20.Nd2 f5 21.Nf3 e6 22.0-0 Nd7 23.c4 Qe7 24.cd5 cd5 25.Ba3 Qg7? 26.Bf8+– Kf8 27.Nd4 Re8 28.Qb5 Ne5+/– 29.Rac1 Qf6? 30.Rc7+– Re7 31.Re7 Qe7? 32.Rc1 Kg7?? 33.Qa6 Kh6 34.Qe6 Qa3?? 35.Rf1 Nd3 36.Nf5 Kg5 37.Nd4 Nd2 38.Qd5 Kh6 39.Rd1 Qb2 40.Nf3 Nf3 41.Qf3 Qc2 42.e4 Ne5 43.Rd5 Nf3-+ 44.gf3 Qc1 45.Kg2 Qf4 46.Ra5 g5?? 47.Ra7 Kg6 48.Ra6 Kh5 49.Ra5 h6 50.Rb5 Kh4 51.a5 h5 52.a6?? g4-+ 53.fg4 hg4 54.hg4 Qg4 55.Kf1 Qe4 56.a7 Qd3 57.Kg2 Qa3 58.Rb4 Kh5 59.Rb5 Kg6 (59...Kg6 60.Rb7 Qa4-/+) 0–1. martin78ns – vajar, kurnik, 2012.

3.Bb2 d6 4.e3 Bd7 5.a3 Na6 6.Nf3 b5 7.d4 g6 8.Bd3 Bg7 9.Nbd2 0-0 10.Qc2 Bc8 11.0-0 Bb7 12.e4 Rc8 13.Rfe1 Ba8 14.e5 de5 15.de5 Nd7 16.Rad1 Ne5?? 17.Ne5+– Be5 18.Nf3 Qc7?? 19.Ne5+– Qb7 20.Nf3 c5 21.bc5 Nc5 22.Bf1 Ne6 23.c4 Ng5 24.Ng5 Qg2 25.Bg2 Bg2 26.Kg2 bc4 27.Qc3 Rfd8 28.Qg7 1–0. Fournier,Frederic (1895) – pitufoverde (1725), Active blind, 2011.

4.Nf3 e5 5.d3 Be6 6.Be2 Qc7 7.Bb2 Nbd7 8.Nbd2 Nb6 9.0-0 0-0-0 10.Qc2 Kb8 11.Rfe1 d5 12.e4 de4 13.Ne4 Ne4 14.de4 g6 15.a3 Be7 16.Rad1 Rd1 17.Rd1 Rf8 18.Bf1 f5 19.ef5 Bf5+= 20.Qc1 Bc8 21.c4+= e4?? 22.Nd2 Bf6? 23.Bf6+– Rf6 24.Re1 Qf7 25.g3 h5 26.Bg2 g5?? 27.Ne4+– Rf4?? 28.gf4 gf4 29.c5 Bf5 30.cb6 ab6 31.Nc3 Qg6 32.Ne2 f3 33.Ng3 fg2 34.Kg2 h4 (34...h4 35.Qf4 Ka7 36.Qf5 Qg7+–). Fournier,Frederic (1800) – sintroniko (1865), Active, 2011.

4.Nf3 Be6 5.Bb2 Nbd7 6.d4 Qc7 7.Bd3 g6 8.Qc2 Bg7 9.Nbd2 a6 10.a4 0-0 11.0-0 b5 12.ab5 ab5 13.Ra8 Ra8 14.Ra1 Rb8 15.Re1 Ne8 16.e4 c5 17.dc5 dc5= 18.bc5 Nc5 19.Nb3?? Nb3 20.Qb3 Bb3 21.Nd4 Bd4 22.cd4 Bc4 23.Bc4 bc4 24.e5 Rb2 0–1. Fournier,Frederic (1855) – pinker14 (1880), Active blind, 2011.

4.Nf3 Be6 5.Bb2 g6 6.d4 Bg7 7.Bd3 Nbd7 8.Qc2 Qc7 9.Nbd2 a6 10.a3 0-0 11.0-0 b5 12.Rfe1 Rfc8 13.e4 Nb6 14.Rac1 Ra7 15.Qb1 Nbd7 16.Bc2 c5 17.dc5 dc5 18.e5 Ne8 19.h3 c4 20.Rcd1 Nb6 21.Nf1 Na4 22.Ba1 a5 23.Ng3 ab4 24.ab4 Ra6 25.Be4 Qa7 26.Bc2 Nc7 27.Be4 Qb8 28.Bc2 Rd8 29.Rd8 Qd8 30.Rd1 Qb8 31.Rd2 Ra7 32.Qd1+= Na8?? 33.Ne4 N8b6?? 34.Nd6 ed6-+ 35.ed6 Rd7 36.Ba4 Na4 37.Nd4 Rd6 38.Nb5 Rd2 39.Qd2 Qb5 0–1. Fournier,Frederic (1705) – pinker14 (1930), Club Buho21 Buho21.com, 2011.

3.a3 a6 4.Bb2 e6 5.e3 Be7 6.Nf3 d5 7.Be2 Bd7 8.d4 b5 9.0-0 Rb8 10.Bd3 h6 11.Qc2 0-0 12.Nbd2 Qc8 13.h3 Ne8 14.Rfe1 Bf6 15.e4 de4 16.Ne4 Nd4?? 17.Nd4 Bd4 18.cd4 Kh8 19.Ng3 c6 20.Rad1 a5 21.Bc3 ab4 22.Bb4 Rg8 23.Bf1 Nc7 24.Ne2 Nd5 25.Qb2 Qb7 26.Nc3 Nb4 27.ab4 Rbd8 28.Ra1 Bc8 29.Rad1 Rd7?? 30.Ne2 Rgd8 31.Rd2 Qc7 32.Red1 Bb7 33.g3 c5 34.dc5?? Rd2?? 35.Rd2+– Rd2 36.Qd2 Bd5 37.Nc3 Qc6 38.Nd5 ed5 39.Bg2 g6 40.Kh2 Kh7 41.Bd5 Qc5 42.bc5 (42.bc5 b4 43.Qf4 f5 44.Qc7 Kh8 45.Qf7 b3 46.Qg8) 1–0. Fournier,Frederic (1890) – jaffi (1975), Active Blind, 2008.

3.Bb2 (--> 1.b4 Nf6 2.Bb2 Nc6 3.c3).

3.e3 a6 4.Nf3 e6 5.Bb2 d5 6.d4 Be7 7.Bd3 Bd7 8.Qc2 h6 9.Nbd2 Rg8 10.0-0 Rb8 11.a3 b6 12.h3 Na7 13.Rfe1 b5 14.e4 Bc6 15.ed5 ed5 16.Re2+– Kf8 17.Rae1 Ba8?? 18.Nf1 g5?? 19.Ng3 Nc8 20.Nf5 Nd6 21.Ne7 Qe7 22.Re7 Nfe4 23.Be4 de4 24.R7e4! Ne4 25.Re4 Be4 26.Qe4 Re8 27.Qe8! Ke8 28.Ne5 c6 29.Bc1 Kf8 30.f4 gf4 31.Bf4 h5 32.g3 Rg6 33.Ng6 fg6 34.Bb8 Kf7 35.Bc7 Ke6 36.Bf4 Kf5 37.Kf2 g5 38.Bd2 Kg6 39.Kf3 Kf5 40.h4 g4 (40...g4 41.Ke3 Kf6+–). Fournier,Frederic (1930) – hackemate007 (1835), Active, 2011.

3.e3 e5 4.a4 (4.d4 e4+=) 4...a6 (4...d5 5.d4 Bd6 6.b5+=) 5.h3 (5.d4 d5+=) 5...d5-/+ 6.Be2 Ne4 (6...Bd6 7.Ba3-/+) 7.d3 Nf6 8.Nd2 (8.Ba3 Bd6+=) 8...Bf5 (8...d4 9.Bf3 dc3 10.Bc6 bc6 11.Nc4-+) 9.g4 (9.Bb2 e4 10.de4 de4+=) 9...Be6-/+ 10.e4 (better is 10.Bf3!?-/+) 10...d4-+ 11.cd4 (11.Bb2 dc3 12.Bc3 Bb4 13.Bb4 Nb4 14.g5-+) 11...Nd4 (11...Qd4 12.Rb1 Bb4 13.Bb2 Bd2 14.Qd2 Ne4 15.Bd4 Nd2 16.Kd2 Nd4 17.Bf3 Nf3 18.Nf3-+) 12.Ngf3 (12.Rb1 Nc6 13.b5 ab5 14.ab5 Nd4+=) 12...Nf3 (better is 12...Bb4!? 13.Rb1 Nf3 (13...Ne2?! 14.Qe2 c5 15.Ne5-/+) 14.Bf3 a5-+) 13.Nf3-/+ h6 (better is 13...Bb4 14.Bd2 Bd6-/+) 14.Ne5? (14.Rb1 Bd6=) 14...Bd6?? (better is 14...Bb4 15.Kf1 Qd4-+) 15.Bb2 (better is 15.f4 Bb4 16.Bd2 Bd2 17.Qd2=) 15...Be5 (better is 15...Bb4 16.Kf1 0-0+=) 16.Be5+/– b6 (16...Qe7 17.Qb1+/–) 17.Rg1 (17.Rc1 Qe7 18.Qd2 Bb3+–) 17...0-0+/– 18.f4 (18.g5 hg5 19.Rg5 Ne8+/–) 18...Nd7 19.Rg3?? (better is 19.Bc3 Qh4 20.Kd2+/–) 19...Qh4 (19...Ne5 20.fe5 Qd4 21.Rb1-/+) 20.Kf2+= Ne5 21.fe5 f5?? (better is 21...f6+=) 22.ef5 Bf5 23.gf5 Rf5 24.Kg2 Raf8 25.Qb3 (better is 25.Bf3!? Qb4 26.Rc1 Qb2 27.Qc2 Qe5 28.Qc7 Qb2 29.Rc2+–) 25...Kh8+/– 26.Rf1?? (better is 26.Bf3 Rg5 27.Bg4+/–) 26...Rf1+= 27.Bf1 Qf4 28.Qd1? (better is 28.Kh2 Qf1 29.Qd5-/+) 28...Qf2-+ 29.Kh1 Qa2 (better is 29...Qg3 30.Bg2 Qe5-+) 30.Rg2 (better is 30.d4!? Qf2 31.Rg1 Rf3+–) 30...Qf7 31.Rg1 Qd5 32.Bg2 Qe5 33.d4 Qe3 (33...Qd6 34.b5 ab5 35.ab5+–) 34.Qg4 Kg8 (34...Qe8+–) 35.Bd5 Kh8 (35...Rf7 36.Qg7) 36.Qg7 1–0. giraira – apollo1221, gameknot.com, 2017. (=1.c3 Nf6 2.b4 Nc6)

3.e3 Ne5 4.Nf3 Nf3 5.Qf3 d6 6.Qd1 Bd7 7.d4 a6 8.Nd2 e6 9.Nf3 Be7 10.Bd3 c6 11.Bb2 Qc7 12.a3 b5 13.0-0 0-0-0 14.Qc2 h6 15.h3 g6 16.Rfe1 Rh7 17.Rac1 Rdh8 18.e4 e5? 19.d5?? cd5+= 20.ed5 Nd5 21.Rcd1?? Nb6 22.Be4 Bc6 23.Bc6+= Qc6 24.Nd2 f6 25.Ne4 f5-/+ 26.Ng3 f4 27.Ne4 g5 28.Kh1 d5 29.Nc5? Bc5-+ 30.bc5 Nd7 31.f3 Kb7 32.Bc1? Rc8?? 33.Bd2 Nc5?? 34.Rb1?? Rhc7 35.Red1? Qb6 36.Be1 Na4 37.Bf2?? Qc6?? 38.Re1?? e4 39.fe4? de4 40.Bg1?? e3 41.Be3?? fe3 42.Re2?? Nc3-+ 43.Qc3 Qc3 44.Rbe1 Qa3 45.Re3 Qe3! 46.Re3 Rc1 47.Kh2 R8c2 0–1. Fournier,Frederic (1770) – chema05, Active blind, 2011.

4.Bb2 e5 5.Nf3 Be6 (5...e4 6.Nd4 Nd4 7.ed4-/+) 6.d3 (6.b5!? Ne7 7.Ne5+=) 6...Bd6 7.Be2 Qe7 8.Nbd2 0-0-0 (8...e4 9.de4 de4 10.Nd4 Nd4 11.ed4+=) 9.0-0 (9.b5 Nb8 10.Qa4 Bd7=) 9...Kb8 (9...e4 10.Ne1+=) 10.Qc2 Rd7 (10...e4 11.de4 de4 12.Nd4 (12.Ne4? Bf5-+) 12...Nd4 13.ed4+=) 11.e4 de4 12.de4 Nd4?? (better is 12...Rdd8=) 13.cd4+– ed4 14.Bd4 Bb4 15.Rab1 Bd2 16.Nd2 Rd4= 17.Nf3 Rd7?? 18.Rfd1 Rd1+= 19.Rd1 Rd8 20.Rd8 Qd8 21.Qb1 b6 22.Ba6 Nd7 23.e5 c6 24.h3 1–0. Fournier,Frederic (1975) – chequi1 (1925), Active, 2008.

4.Bb2 e6 5.Nf3 Bd7 6.d4 a6 7.Bd3 Bd6 8.0-0 h6 9.Nbd2 0-0 10.a4 Be7 11.Qc2 g6 12.Rfe1 Kg7 13.b5 Rh8?? (better is 13...ab5 14.ab5 Na7+/–) 14.bc6+– bc6 15.a5 h5 16.e4 Kg8 17.ed5 cd5 18.Nb3 c6 19.Nc5 Bc8 20.Qe2 Kh7 21.Na6 Ba6 22.Ba6 Ra6 23.Qa6 Nd7 24.Qe2 c5 25.dc5 Nc5 26.a6 Nd7 27.a7 Qa8 28.Nd4 Rd8 29.Nb5 Bf6 30.c4 Bb2 31.Qb2 Nc5 32.cd5 ed5 33.Qe2 Ne6 34.Qf3 Kg8 35.Qd3 Qc8 36.Nd4 Nd4 37.Qd4 Qc5 38.Qc5 (38.Qc5 Kh7 39.a8Q Ra8 40.Ra8 Kh6 41.Rh8 Kg5 42.Qe3 Kf5 43.h4 d4 44.Qf3) 1–0. Fournier,Frederic (1690) – to6ka (1945), Active blind, 2011.

4.Bb2 a6 5.a3 Be7 6.Nf3 d5 7.d4 b5 8.Bd3 Rb8 9.Nbd2 Bd7 10.Qc2 Na7 11.0-0 h6 12.Rfe1 Nc6 13.e4 de4 14.Ne4 Nd5 15.Nc5 Bc8 16.Bh7 g5 17.Be4 Bc5? 18.dc5+– Qe7?? 19.Bd5 e5 20.Bc6 (20.Bc6 Kf8 21.Ne5+–) 1–0. Fournier,Frederic (1805) – pacman1987 (1850), Active Blind, 2011.

4.Nf3 d6 5.d4 Bd7 6.Bd3 Ne7 7.Bb2 d5 8.a3 c6 9.Nbd2 Nc8 10.0-0 g6 11.Qc2 Bg7 12.Rfe1 Kf8 13.e4 Kg8 14.ed5 cd5+= 15.Rac1 h6 16.Qb1 Kh7 17.Ne5 Ne8?? 18.Nd7 Qd7+= 19.Nf3 Nf6 20.Ne5 Qe8 21.c4 Ne7 22.cd5 Ned5 23.Bf1 Ne7 24.Rcd1 Rd8 25.Nd3 Nd7 26.Nc1 f5?? 27.Ne2 Rf8?? 28.Ng3?? b6? 29.Rc1 Rc8? 30.Rc8 Nc8 31.Rc1 Ne7 32.Re1 a6?? 33.Ne2 Rf7? 34.Nc3 Nb8 35.Ne2 Nbc6 36.Ng3 e5? 37.de5+– Ne5?? 38.Kh1 N7c6? 39.f4+– b5 40.fe5 Ne5 41.Be5 Be5 42.Re5?? Qe5= 43.Ne2 Qe8 44.Qc1 Re7 45.Ng1 h5 46.h3 Rc7?? 47.Qb1 Rd7 48.Nf3 Re7 49.Qe1?? Re1-+ (49...Re1 50.Ne1 Qe1-+) 0–1. Fournier,Frederic (1930) – perejil2 (1650), Active, 2011.

3.a4 d6 4.e3 Bg7 (4...e5 5.Be2=) 5.Bb2 (5.d4 0-0=) 5...0-0+= 6.d4 e5 7.de5 de5 8.Qd8 Rd8 9.Be2 Be6 (9...e4 10.Nd2+=) 10.h3 (10.Nf3 a5+=) 10...c6 (10...e4 11.Nd2+=) 11.Nf3 Nbd7 12.0-0 Nb6 13.Ng5? (13.Nbd2 a5=) 13...Bb3 (13...Bc4!? 14.Re1 Be2 15.Re2 Rd1 16.Kh2 Nc4-+) 14.a5+= Nc4 15.Nf3?? (better is 15.Bc1+=) 15...Nb2-+ 16.Ne5 (16.a6 b5 17.Ne5 Bd5-+) 16...Nd5 17.f4 (17.Nf3 Na4 (17...Bc3?! 18.Ra3-+) 18.Ra3 Bc2-+) 17...Ne3 18.Ra3 (18.a6 Be5 (worse is 18...Nf1 19.ab7 Rab8 20.Nc6-+) 19.ab7 Rab8 20.fe5 Nf1 21.Kf1 Rb7-+) 18...Be6 (18...Bd5!? 19.Rf2-+) 19.Rc1 Nbc4 (19...Be5 20.fe5 Bc4 21.a6-+) 20.Nc4 Nc4 21.Bc4 Bc4 22.Re1 Rd3 23.Kh2 Kf8 24.Ra1 (24.Re4 Bd5 25.Re1 Re8 26.Re8 Ke8-+) 24...Re8 25.Re8 Ke8 26.Na3 Rc3 (26...Bc3!? 27.Rc1 Ba6 28.Nc2-+) 27.Re1 0–1. giraira – sarrabulho, gameknot.com, 2017. (=1.c3 Nf6 2.b4 g6)

3.a4 Bg7 4.Nf3 0-0 5.d4 d6 6.Nbd2 Nbd7 7.e4 e5 8.de5 Ne5 9.Ne5 de5 10.Qf3 Bg4 11.Qe3 Nh5 12.b5 Qd7 13.h3 Be6 14.a5 Rfd8 15.a6 b6 16.Rb1 Nf4 17.g3 Nh3 18.Bg2 h6 19.f4 ef4 20.gf4 Nf4 21.Qf4+/– Qd3 22.e5 g5 23.Qf3 Rac8 24.Qd3 Rd3 25.Be4 Rc3 26.Bb2 Re3 27.Kf2 Rh3 28.Rh3 Bh3 29.Bb7 Rd8 30.Ne4 Bf5 31.Bc6 h5 32.Re1 h4 33.Ng5 Rd2 34.Re2 Re2 35.Ke2 Bh6 36.Ne4 Bg4 37.Kf2 Kf8 38.Nf6 Be6 39.Kg2 Bf4 40.Ba3 Kg7 41.Nh5 (41...Kg6 42.Nf4 Kf5 43.Ne6 Ke6 44.Bb2+–) 1–0. Trkn – guest2179, ICC, 2003.

3.b5 Bg7 4.e3 0-0 5.d4 c6 6.Ke2 b6 7.bc6 Ba6 8.Ke1 dc6 (8...Bf1!? 9.Kf1 Nc6-/+) 9.Ba6=+ Na6 10.Kf1 (10.e4 e5 11.Qe2 ed4 12.Qa6 Ne4-+) 10...Nc7 11.Bd2 (11.Nf3 c5-/+) 11...Nb5 12.c4 (better 12.Qf3 c5 13.Ne2-/+) 12...Nc3?? (better 12...Nd4 13.ed4 Qd4=+) 13.Bc3+- b5 (13...e5+-) 14.d5 bc4 (14...cd5 15.cb5 Deflection) 15.Bf6?? (better 15.d6+=) 15...Bf6-/+ 16.Nc3 (better 16.Nd2 Ba1 17.Qa1-/+) 16...cd5?? (better 16...Bc3 17.Rc1 Bf6 18.dc6 Qd1 19.Rd1 Rfc8-+) 17.Rc1= Bc3 (17...e6 18.Qd2=) 18.Rc3+= Qa5 19.Qc2 Qb5 (19...Rab8 20.Ne2+=) 20.Ne2 (20.Nf3 Rab8+/-) 20...Rab8+= 21.Nd4 (better 21.Qd1!?+=) 21...Qb1=+ 22.Ke2?? (22.Qc1 Qa2 23.Nb5 Rb5 24.Qd1-+) 22...Qh1-+ 23.Kf3 (23.Nc6 Rb7-+) 23...Qb1 (better 23...Qh2 24.Nc6 Qh5 25.Kg3 Qg5 26.Kh2 Rb6-+) 24.Ne6 (24.a4 Rfc8 25.Nb5 Qc2 26.Rc2-+) 24...Qc2 25.Nf8 (25.Rc2 fe6 26.Ke2-+) 25...Qc3 26.Ng6 Qf6 (26...fg6 27.a3 Qe5 28.Kg4 h5 29.Kf3 Qf5 30.Ke2 Rb2 31.Kd1 Qb1) 27.Nf4 Qh6 0-1. chessovolution (1605) - R3_D3 (2075), Rated Blitz game, lichess.org, 2021.

3.Qc2 d5 4.d3=+.

3.Qc2 Bg7 4.h4 (4.e4!?=) 4...0-0 5.Bb2 d5 6.c4 e6 (6...dc4 7.Qc4 Be6 8.Qc1-/+) 7.Ba3 (7.Nf3 dc4 8.Qc4 Bd7=+) 7...Nc6 (7...dc4 8.b5 Ng4 9.Bf8 Ba1 10.Bb4-/+) 8.cd5 (8.b5 Nd4 9.Qa4 Ne4 10.Bf8 Qf8-/+) 8...ed5 (8...Nd5 9.Nc3-+) 9.b5-/+ Nd4 10.Qd3 Ng4 11.Bf8 Qf8 12.h5 (12.e3 Bf5 13.Qd4 Bd4 14.ed4 Qb4-+) 12...Bf5 (better 12...Qc5 13.Nc3 Nc2 14.Kd1 Nb4-+) 13.Qc3 (13.e4 Be4 14.Qg3 Nc2 15.Kd1 Na1 16.hg6-+) 13...Nc2 14.Kd1 (14.Qc2 Bc2 (14...Ba1?! 15.d3-/+) 15.Nc3 Bc3-+) 14...Na1 (better 14...Nf2 15.Kc1 Bc3 16.dc3 Nh1 17.g4-+) 15.Qc7 (15.d4 Nf2 16.Kc1 Bh6 17.e3 Nh1-+) 15...Nf2 16.Ke1 Nh1 17.Qb7 Nc2 (17...Rc8 18.Qc8 Qc8 19.e4 Qc1 20.Ke2 Ng3 21.Kf3 Qf1 22.Kg3 Be5 23.Kh4 Qf4 24.g4 Qg4) 18.Kd1 Nf2 19.Kc1 Rc8 20.Nc3 Qa3 21.Kb1 Na1! 22.d3 (22.Ka1 Qc1 Mate attack) 22...Qc3 (22...Qb4 23.Kc1 Qc3 24.Kb1 Qc2) 23.Qc6 (23.Qf7 Kf7 24.hg6 Kg6 25.b6 Qc2) 23…Qb2 0-1. venaverme - sunaru1, gameknot.com, 2018.

3.d3 Bg7 4.Bb2 (4.e4 a5 5.b5 0-0=) 4...e6 (4...d5 5.e3+=) 5.h3 (5.e4 e5=) 5...a6 (5...0-0 6.Nf3=) 6.e4= d6 7.Be2 0-0 8.Nd2 b6 9.Ngf3 c5 10.a3 Nc6 11.0-0 e5 12.Re1 Be6 13.Nf1 (13.d4 ed4 14.cd4 Nd7+=) 13...Qd7 14.N3h2 (14.Ng5 h6 15.Ne6 fe6=) 14...b5 Black intends c4 15.g4 (15.Nf3 h6=) 15...g5 (15...h6 16.Nf3+=) 16.Bc1 h6 17.Ng3 c4 (17...a5!? 18.bc5 dc5+=) 18.dc4= bc4 19.Nf5 (better is 19.Nhf1!?=) 19...Ne4-/+ 20.Bc4 Bc4 (20...Bf5!? 21.gf5 Nc3-/+) 21.Re4+= d5?? (better is 21...Be6+=) 22.Rc4!+– Qe6 (22...dc4 23.Qd7 Pinning (23.Qd7 Deflection)) 23.Rc6! Qd7 (23...Qc6 24.Ne7 Double attack (24.Ne7 Decoy)) 24.Rd6 Qc7 25.Qd5 Rae8 (25...Qc3 26.Qa2 Kh7 27.Ng7 Kg7 28.Bb2+–) 26.Rc6 (better is 26.Rg6! Rd8 27.Rg7 Kh8+–) 26...Qd8 27.Qd8 Rd8 28.Ra6 Rd1 (28...e4 29.Ng7 Kg7 30.Be3+–) 29.Kg2 e4 30.Ng7 Kg7 31.Bb2 (31.Nf1!? Kh7+–) 31...Rd2 32.Rb1 Re8 (32...e3 33.c4 Kh7 34.Nf3 Rf2 35.Kg3+–) 33.c4 Kg8 34.Rh6 e3 35.Rh8 1–0. giraira – brettmartin, gameknot.com, 2017. (=1.c3 Nf6 2.b4 g6)

3.d4 Bg7 4.e4 Ne4 5.h4 (5.Bd3 d5-/+) 5...c6 6.h5 d5 7.hg6 fg6 (7...hg6 8.Rh8 Bh8 9.Nf3-/+) 8.Bd3 Qd6 (8...e5 9.Bh6 Bh6 10.Be4-/+) 9.Nf3 (9.Be4 de4 10.Qe2 Qd5=+) 9...Nd7 (9...Bg4 10.Rh4 Qe6 11.Qe2-/+) 10.Qe2 Ndf6 11.Nbd2? (11.Ne5!?=+) 11...Bf5 (11...Nc3 12.Qe3-+) 12.Nh4 (12.Be4 Ne4 13.Ne4 Be4-/+) 12...0-0-0 (better 12...Bg4!? 13.Qe3 Nc3 14.Ng6 Nd1-/+ (14...hg6?! 15.Rh8 Bh8 16.Bg6 Kd8 17.Qc3-/+)) 13.b5 Kb8 (13...Bg4 14.Qe3-/+) 14.bc6 Qc6 15.Ne4?? (better 15.Nf5 gf5 16.Rh3-/+) 15...de4-+ (15...Be4?! 16.Bf4 Ka8 17.Rc1-/+; 15...Ne4?! 16.Qc2-/+) 16.Bf4 (16.Bc4 Rc8-+) 16...Ka8 17.0-0 (17.Bc4 Rc8-+) 17...ed3 18.Qb2 (18.Qe7 Nd5 19.Qg7 Nf4-+) 18...Nd5 19.Rab1 (19.Bd2 e5-+) 19...Nb6 (better 19...Nf4 20.Kh1 g5 21.Qb7 Qb7 22.Rb7 gh4 23.Re7 Rhe8-+) 20.Qa3 (20.Qd2 Rhg8-+) 20...a6 (better 20...Bf6 21.Nf5 gf5 22.Qb3-+) 21.Rb4 (21.Nf5 gf5 22.Rfd1 Rhg8-+) 21...g5! 22.Rfb1 (22.Bg5 Be6 Combination) 22...Bd4 (better 22...Nd5 23.Bg5 Nb4 24.Nf5 Nc2-+) 23.cd4 gh4?? (better 23...Nd5 24.Bg5 Nb4 25.Nf5 Nd5-+) 24.Rb6+/- Qg2?? (24...Qc4 25.Qe7 Qc8 26.Rb7 Rd7 27.Rd7 Bd7 28.Rb8 Qb8 29.Bb8 d2+-) 25.Kg2+- Rhg8 26.Kh2 Rg2 (26...Rg2 27.Kg2 Be4 28.Kh2 Ka7 29.Ra6 ba6 30.Qe7 Ka8 31.Qd8 Ka7 32.Qb8). gavity (2410) - blitzbullet (2460), Rated Three-check game, lichess.org, 2021.

3.Nf3 Bg7 4.Bb2 0-0 5.d4 d6 (5...a5 6.b5=+) 6.Nbd2 a5 7.a3 e5 (7...Bf5!?=+) 8.de5= Nd5 (8...de5 9.Ne5 Qe7 10.Ndf3+=) 9.Qc2 Bf5?? (9...de5 10.Rd1=) 10.Qb3?? (10.e4!? ab4 11.cb4 Nc6 12.ef5 Ne5 13.Ne5 Be5 14.fg6 hg6 15.Be5 Qe7+–) 10...de5? (better is 10...Be6 11.c4 a4+/–) 11.e4+– Nf4 (11...Be6 12.ed5 a4+–) 12.0-0-0?? (better is 12.ef5 gf5 13.ba5+–) 12...Be6=+ 13.Qa4 (13.Nc4 Qe7 14.ba5 c5=+) 13...c6 14.g3 (14.b5 Qb6-/+) 14...Nd3-/+ 15.Bd3 Qd3 16.c4 Bc4 (16...f6 17.Qb3 Qb3 18.Nb3 ab4 19.Nc5 Bc4 20.Nd2-+) 17.Qc2 (17.Ne5!? Be5 18.Be5=+) 17...Qc2-/+ 18.Kc2 Bb5 (better is 18...Be2!? 19.Rde1 Bf3 20.Nf3 ab4 21.ab4 f6-/+) 19.Be5=+ Be2 (19...ab4 20.ab4 Rd8 21.Nb3-/+) 20.Rde1 (20.Ra1!?=) 20...Bf3=+ 21.Nf3 Nd7 (22.Bg7 Kg7=; 21...ab4 22.Bg7 Kg7 23.ab4 Ra2 24.Kb3 Rf2 25.Re3=+). LuckyMiki – guinguin, internet, 2007.

3.g3 Bg7 4.h4 (4.Nf3 d5=) 4...d5 5.Nf3 (5.Bg2 0-0+=) 5...0-0 (5...a5 6.b5+=) 6.e3 (6.Bg2 a5+=) 6...Bg4-/+ 7.Be2 Nbd7 8.0-0 (8.d4 e5-/+) 8...Bf3 (8...a5 9.d4-/+) 9.Bf3+= e5 10.Qa4 e4-/+ 11.Be2 Ne5 12.b5 Qc8 13.Kg2 c6 14.d4? ed3-+ 15.Bd1 a6 16.Qf4 Re8 17.Na3? cb5 18.Bd2 Ne4 19.Nb1 Nc4 20.Bc1 d2 21.Bd2 Ncd2 22.Nd2 Nd2 23.Rh1 Qc4 24.Qc4 dc4 25.Bg4 Bc3 26.h5 Ba1 27.Ra1 Ne4 28.hg6 fg6 29.Rd1 Rf8 30.Be6 Kh8 31.Rd4 Nf2 32.Rd7 Ne4 33.Rb7 Nc5 34.Bd5 Nb7 35.Bb7 Ra7 36.Bd5 Rc7 37.Bf3 c3 38.Kf2 c2 (38...c2 39.Kg1 c1Q 40.Kh2 Rc2 41.Kh3 Qf1 42.Bg2 Qg2 43.Kg4 Qf3 44.Kg5 Qh5) 0–1. Mo,Manyu – Nesko,Lawrence, FICGS, 2006.

3.h4 Bg7 4.Rh3 0-0 5.Ba3 (5.Nf3 d5 6.Rh1 Bf5-/+) 5...d6 6.Rd3 (6.Rh2 e5-/+) 6...b6 (6...Bf5 7.Rf3-/+) 7.c4 (7.Bb2 Bf5 8.Rf3 Nbd7-/+) 7...c5 (7...Be6 8.c5-+) 8.Qa4? (better is 8.bc5!? bc5 9.Bb2-/+) 8…Bd7 (9.b5 Bf5-+; 8...Ng4 9.Rc3-+) 0–1. lachezar – the yid, internet, 2005.

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.c3).

3.Bb2 Bg7 4.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.c3).

4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.c3).

4.Bc4 0-0 5.d4 d5 6.Bd3 Nbd7 7.e4 de4 8.Bc2 Ne8 9.Be4 Ndf6 10.Nf3 Bg4 11.h3 Bf3 12.Bf3 c6 13.Bg5 Nd5 14.0-0 f6 15.Bh4 g5 16.Bg5 fg5 17.Be2 Nd6 18.Bd3 b5 19.Qe1 Nf4 20.Qd1 e5 21.Bc2 (21.de5 Be5-+) 21...ed4 22.Qg4 (22.g3 Ng6-+) 22...h5 23.Qf3 dc3 24.Nc3 (24.Rc1-+) 24...Bc3 25.Qc3 (25.Rab1-+) 25...Qb6 (better 25...Ne2 26.Kh1 Nc3 27.Bb3 Kg7-+) 26.Qe5 Rad8?? (better 26...Qd4! 27.Qg5 Qg7 28.Qg7 Kg7-+) 27.Qg5+- Kf7 28.Qf4 Kg8 (28...Ke6 29.Qh6 Kd7+-) 29.Qg5 Kf7 30.Qh5 (30.Rae1 Qe3 31.Re3 Rfe8 32.Qf4 Nf5 33.Qf5 Kg7 34.Qh7 Kf8 35.Rf3) 30...Ke7 31.Qe5 Kd7 32.Rfe1 (better 32.Rad1 Kc7 33.Rd6 Rd6 34.Qe7 Rd7 35.Qf8+-) 32...Qf2= 33.Kh2 (33.Kh1 Qc2 34.Qe7 Kc8 35.Rac1+-) 33...Qf4?? (better 33...Rg8 34.Qe7 Kc8-/+) 34.g3?? (better 34.Qf4 Rf4 35.a3+-) 34...Qf2 (better 34...Qe5 35.Re5 Rf2 36.Kg1 Rc2-+) 35.Kh1-/+ Qc2 36.Qe7 Kc8 37.a4?? (better 37.Qa7 Rde8 38.Rac1 Re1 39.Re1-+) 37...Rf2-+ (37...ba4?! 38.Qa7 Rde8 39.Rec1 Qe4 40.Kg1-+) 38.Kg1 (38.Qe6 Rd7 39.Qg8 Kc7 40.Qa2 Qa2 41.Ra2 Ra2 42.Rd1-+) 38...Rg2 39.Kf1 (39.Kh1 Rh2 40.Kg1 Qg2) 39…Qf2 0-1. scot75 – WarlpiriMan, ChessWorld.net, 2012. (=1.c3 Nf6 2.b4 g6)

4.d4 a5 5.Nf3=.

4.d4 d6 5.Nf3 0-0 6.Bd3 c5 7.0-0 cb4 8.cb4 Qb6 9.b5 a6 10.ba6 Na6 11.Bd2 Nb4 12.Qb3+= Nbd5 13.Qb6 Nb6 14.Nc3 Be6 15.Rfb1 Bc4 16.Rb6+/– Bd3 17.Rb7 Rfe8 18.a4 Kf8 19.a5 Reb8 20.Rb8+– Rb8 21.a6 Ra8 22.a7 Ne4? 23.Ne4 Be4 24.Ng5 (24...Bd5 25.Ra5+–) 1–0. marekt (2360) – Stendhal (1995), ICC, 2003.

4.Nf3 0-0 5.d4 d6 6.Bd3 Nbd7 7.Qc2 e5 8.de5 de5 9.Nbd2 Re8 10.0-0 Qe7 11.Bb2?? (11.e4 a5+=) 11...c6?? (11...e4 12.Ne4 Ne4 13.c4-+) 12.Rfe1?? (12.e4 Rd8=) 12...Nb6?? 13.a3?? Nbd5?? 14.c4+= Nb6 15.Rac1 e4= 16.Ne4?? Ne4-+ 17.Bg7 Kg7 18.Be4 Qe4 19.Qe4 Re4 20.Nd2 Re8 21.Nf3 Kg8 22.Red1 a5 23.Ra1? ab4 24.ab4 Ra1 25.Ra1 h5 26.Rb1? Rd8 27.h3? Be6 28.b5? Nc4 29.bc6 bc6 30.Nd4 c5 31.Ne6 fe6 32.Rc1 Rd2?? 33.Rc4+= Rd5 34.Rc1 Kg7 35.Kh2 Kh6 36.g3 c4 37.Kg2 Rc5= 38.Kf1 c3 39.Ke2+= c2 40.Kd2 g5 41.Rc2 Rc2 42.Kc2+– g4 43.hg4 hg4 44.Kc3 Kg5 45.Kd4 Kf5 46.e4 (46.e4 Kf6 47.Kd3+–) 1–0. Fournier,Frederic (1780) – HugoBarros (1720), Active blind, 2011.

3.Ba3 Bd7 4.h3 (4.Nf3!?=+) 4...e6 (better is 4...e5-/+) 5.b5?? (better is 5.Qc1-/+) 5...Ba3-+ 6.Rb1 (6.e3 0-0-+) 6...Bd6 (6...d4 7.Na4-+) 7.Rb3 (7.e3 0-0-+) 7...b6 (7...d4 8.Nb1-+) 8.Nf3 0-0 9.e3 h6 0–1. leio – jbg, net–chess.com, 2005.

3.Ba3 e5-+ 4.d4 e4 (4...ed4 5.Qd4 Nc6 6.Qe3 Be6 7.Nb5-+) 5.Nb5 (5.Rb1!?-/+) 5...a6 6.c4?? (better is 6.Nc3-+) 6...ab5 7.cb5 (7.Qc1 bc4 8.Rb1-+) 7...Ra3 8.Qc2 (8.Qb1 Qe7 9.e3-+) 8...Bb4 9.Kd1 e3 10.fe3 Ne4 11.g4 Bg4 12.Bg2 Nf2 13.Kc1 Rc3 14.Rb1 Ba3 15.Kd2 Rc2 16.Kc2 Nh1 17.b6 Bf5 18.Kb3 Qd6 19.Bh1 Qb4 0–1. Beatfienduk – solipsismus, internet, 2007.

3.Ba3 Bf5 4.g3 (4.Nf3 e6-/+) 4...e6 5.Nf3 (5.Nb1 Bd6-/+) 5...Nc6 (5...a5 6.Bb2 ab4 7.Nb5-+) 6.Rb1 (6.Nh4 Bg4-/+) 6...Be7 (6...a5!? 7.b5 Nb4 8.Nd4-+) 7.Bg2 (7.b5 Ba3 8.bc6 bc6-/+) 7...0-0 (7...d4 8.Na4 a5 9.b5=+) 8.0-0 Qd7 9.Nh4 Rfe8 10.Nf5=+ ef5 11.Bd5?? Nd5-+ 12.Nd5 Qd5 13.f4 Rad8 14.Rb2 Qd2 15.Qd2 Rd2 16.Rbb1 Re2 17.Rf2 Bd6 18.Bb2 Bb4 19.Rd1 Rf2 20.Kf2 Bc5 21.Kf1 Nb4 22.Re1 Re1 23.Ke1 Nc2 24.Kd1 Ne3 25.Kd2 Nc4 26.Kc2 ½–½. estrella – triton (2065), net–chess.com, 2007.

3.Bb2 e5 4.e4 d4 5.Nd5? Nd5 6.ed5 Bb4 7.c3-/+ dc3 8.dc3 Ba5 9.Ne2 0-0 10.Ba3 Re8 11.Ng3?? Bc3-+ 12.Ke2 Ba1 13.Qa1 b6 14.Ke1 Qd5 15.Be2 Qa5 16.Kd1 Qa3 17.Re1 Rd8 18.Kc2 Bf5! 19.Nf5 Nc6 20.Rd1 Nb4 21.Kb1 Rd1 22.Bd1 Qd3 23.Kc1 Qf5 24.a3 Nd3 25.Kd2 Nf2 26.Bb3 Rd8 27.Ke3 Ng4 28.Ke2 Qf2 0–1. jorlinsky – gdraper (1715), net–chess.com, 2006.

3.Bb2 g6 4.d4 (4.Nf3 Bg7=) 4...Bg7 (4...Bf5 5.e3=+) 5.h3 (5.e3 Bg4 6.f3 Bc8=) 5...a6 (5...Qd6 6.a3=+) 6.e3= 0-0 7.Nf3 e6 (7...Nc6 8.a3=) 8.a3 (8.Bd3 Qd6 9.a3 Nbd7=) 8...Nc6 (8...h6 9.Bd3=) 9.Bd3 b5 (9...Qd6 10.0-0=) 10.0-0 Bb7 (10...Qd6 11.Qd2=) 11.Ne5 (11.Re1 Qd6=) 11...Ne5 12.de5 Nd7 13.Ne2 (13.a4!?=) 13...Ne5-/+ 14.Nc3 (14.Bd4 f6-/+) 14...Nd7 (14...Qh4 15.Rb1-+) 15.Qd2 (15.a4 Qe7 16.Rb1 c6-/+) 15...Nb6 (15...c5 16.Nd1-/+) 16.Rab1 (16.Nd1 e5-/+) 16...Nc4 (16...Qh4 17.Na2 e5 18.f4-/+) 17.Bc4 dc4 18.Qd8 Rfd8 19.Ne2 Rd2-+ 20.Nd4 Bd4 21.Bd4 Rc2 22.Rfd1 Bd5 23.Be5 Rc8 24.f3 f5 25.Rf1 c5 26.g4? cb4 27.Rb4 Ra2 28.Bb2 c3 29.Bc1 Bc4 30.Re1 a5 31.Rb1 Bd3 32.Rb5 Bb5 33.gf5 ef5 34.e4 Re8 35.h4 fe4 36.fe4 Rc2 37.e5 Re2 38.Rd1 R2e5 39.Kf2 Re2 40.Kf3 Re1 41.Re1 Re1 42.Be3 c2 43.a4 Ba4 44.Ke4 c1Q 45.Kf3 Qe3 (45...Qe3 46.Kg2 Bc6 47.Kh2 Re2) 0–1. GeneV – perskak, internet, 2007.

3.d4 e5 4.de5 Bb4 5.Bd2 Bc3 6.Bc3 Ne4 7.Bb2 c5 8.Nf3 Qa5 9.c3 d4 10.Rc1 Qa2-/+.

3.d4 Bf5 4.Bf4 e5!-/+ 5.Be5?? Bb4-+ 6.Qd2 Ne4 7.Qf4 Bc3 8.Kd1 Qg5 9.Qg5 Ng5 10.Rb1 Ne4 11.Bg7 Nf2 12.Kc1 Rg8 13.Be5 b6 14.Nf3 Nh1 15.Bc7 Na6 16.Bf4 Nb4 17.a3 Na2 18.Kd1 Nf2# 0–1. color1972 – janbs, ChessWorld.net, 2004.

3.e3 Bf5 4.Bd3 Bd3 5.cd3 e6 6.Qa4 Qd7 7.Nf3? Qa4 8.Na4 Bb4 9.Rb1 Nc6 (withdraw). Heinicke – Kleindl, corr SOK–88–28, 1988.

3.Nf3 a6 4.d4 e6 5.a3 Bd6 6.Bg5 0-0 7.e4= Be7 8.e5 Ne4 9.Be7 Qe7 10.Ne4 de4 11.Nd2 f5 12.ef6 Qf6 13.Ne4 Qf4 14.Bd3 Nc6 15.c3 (15...e5 16.d5+/–) 1–0. pierre – tsvetomir, ChessHere.com, 2006.

3.Nf3 Bg4 4.b5 e6 5.Ne5 Bh5 6.d4 Nbd7 7.Nd7 Qd7 8.Bg5 Bb4 9.Bd2 Bc3 10.Bc3 Qb5 11.Qb1 Qb1 12.Rb1 b6 13.Bb4 Kd7 14.f4 Bg6 15.Kd1 a5 16.Be1 Ne4 17.g4 f5 18.g5 h6 19.gh6 Rh6 20.a4 Rah8 21.Rg1 Ke7 22.h4 Kf7 23.Kc1 Bh5 24.Kb2 Rg6 25.Rg6 Bg6 26.Bg2 Nd6 27.Kc3 Nc4 28.Bf2 Bh5 29.Re1 Rh6 30.Kb3 Rg6 31.Bh1 Nd2 32.Kc3 Ne4 33.Be4 fe4 34.Kd2 Kf6 35.c3 Kf5 36.Be3 Rg4 37.Bf2 Kf4 38.Be3 Kf5 39.Rf1 Kg6 40.Rh1 Rg2 41.Rg1 Rg1 42.Bg1 Kf5 43.Bh2 Be8 44.Bc7 Ba4 45.Bb6 Kg4 46.Ba5 Kh4 47.Bd8 Kg4 48.Bb6 Bb5 49.Ke3 g5 50.Bc7 Bc4 51.Be5 Kh3 52.Kf2 g4 53.Bc7 g3 54.Bg3 Be2 55.Be5 Bc4 56.Bf4 Kg4 57.Bd6 Kf5 58.Be5 Kg4 59.Bd6 Kf5 60.Be5 Kg4 61.Bd6 Kf5 62.Be5 ½–½. Hossa (2000) – CAM_H (1875), ICS rated blitz match, 1998.

3.Nh3 e5 4.e4 (4.a3!?-/+) 4...d4 5.Nb5 Ne4 (better is 5...c6 6.Na3 Bg4-+) 6.d3?? (better is 6.Qe2 f5 7.f3=+) 6...Bb4-+ 7.Bd2 (7.Ke2 Nf6 8.Rb1-+) 7...Bd2 8.Ke2 Qf6 (better is 8...Nc3 9.Nc3 Bc3-+) 9.de4? (9.Nc7 Kd8 10.de4 Kc7 11.Qd2 Bg4 12.f3 Bh3 13.gh3-+) 9...Bb4 (9...Ba5 10.Rb1-+) 10.Qb1?? (better is 10.Nc7 Kf8 11.Na8+=) 10...Nc6 11.Nc7 Ke7?? 12.Na8 d3-+ 13.Kd3?? Rd8 14.Ke2 Bh3 15.gh3 Nd4 16.Kd1 Qf3 17.Be2 Ne2# 0–1. joker – Dark_Lord_Morgoth, playchess.de, 2002.

4.a3 e5 5.Bg5 Be7 6.e3 e4 7.Bf6 Bf6 8.Bb5 Bd7 9.Nd5+= a6 (10.Bc4 Be6 11.Nf6 Qf6 12.Be6 Qe6+–). monas – tradicio, ChessWorld.net, 2005.

4.b5 Na5=+.

4.Nf3 Nb4 5.a3 Nc6 6.Rb1-/+.

4.Nf3 e6 5.a3 Bd6=+.

4.Nf3 e6 5.Bg5? Be7 6.e3 Nb4 7.Bd3 Nd3-/+ 8.Qd3 h6 9.Bf6 Bf6 10.0-0 0-0 11.Rab1 b6 12.Rb3 Re8 13.Rfb1 Bb7 14.Ne5 Be5 15.de5 Qg5 16.g3? Qe5-+ 17.Nb5 Ba6 18.Qc3 Qc3 19.Rc3 Bb5 20.Rb5 c5 21.Rcb3 c4 22.Rb1 Rec8 23.c3 Kf8 24.f4 f6 25.h4 f5 26.a4 Ke7 27.Kf2 g6 28.a5 Rcb8 29.a6 Rc8 30.Rh1 Rc5 31.Rb2? Ra5 32.h5 Kf7 33.Kf3 Ra6 34.hg6 Kg6 35.Rhh2 Ra3 36.Rbc2 Rb3 37.Rh1 a5 38.Rch2 Rh8 39.g4 fg4 40.Kg3 h5 (41.Rc1 a4-+; 40...Rc3!? 41.Kg4 Re3 42.Rh5-+) 0–1. The Enchanter – tradicio, ChessWorld.net, 2005.

4.Na4 e5 5.Ne5 Bb4 6.Rb1 Bd6 7.Nc4 Be7 8.Ba3 Ba3 9.Na3 0-0 10.e3 c6 11.c3-/+.

4.Nb1 Nbd7 5.c3 dc3 6.d4 e5 7.de5 Bb4 8.Qb3 Nd5 9.Qd5 c2 10.Nbd2 Bc3 11.e6=.

4.Nb1 e5 5.Ne5 Bb4 6.e3 de3 7.fe3 Nbd7 8.Bb2 Ne5 9.Be5 0-0 10.Qf3 Ng4 11.Bf4=+.

4.Ne5 d4 5.Nb1 Bb4 6.Bb2 0-0 7.e3 de3 8.fe3 Ne4 9.g3 Be6 10.Nd3 Na6 11.Bg2=.

4.Ne5 d4 5.Nb1 Bb4 6.Bb2 0-0 7.e3 de3 8.fe3 Ne4 9.g3 Qe7 10.Bd3 Nc5 11.0-0=+.

4.Ne5 d4 5.Nb1 Bb4 6.Bb2 0-0 7.e3 de3 8.fe3 Ne4 9.g3 Qe7 10.Bg2 Nd2 11.Nd2=.

4.Ne5 d4 5.Nb1 Bb4 6.c3 dc3 7.Qa4 Nfd7 8.dc3 Be7 9.e4 0-0 10.Nf3 Nc5 11.Qc2=+.

3.d4 e6 4.f3 d5 5.g4? (5.a3 a5 6.b5 c5+=) 5...Nc6 (5...Bb4 6.Bb2-+) 6.e3? (better is 6.a3!?+=) 6...Bb4-+ 7.Bd2 e5 8.Rb1? (8.Bb5 ed4 9.ed4 0-0-+) 8...ed4 (better is 8...Ng4 9.Nd5 Qh4 10.Ke2 Qf2 11.Kd3 Bf5 12.Kc4 Bd2 (12...Qd2 13.Qd2 Bd2 14.Nc7 Kd7 15.Na8 Ne3 16.Kc5-+) 13.Nc7 Kd7 14.fg4 Qe3-+) 9.Nd5?? (9.ed4 Ng4! 10.Qe2 Kd7-+) 9...Qd5 (better is 9...Nd5 10.Rb4 Ndb4-+) 10.Bb4 Nb4 11.Rb4 Qa5 12.Qd2 de3?? 13.Qc3?? c5?? 14.Rc4?? Qa2-+ 15.Qd2 ed2 16.Kd2 b6 17.Nh3 Be6 18.Nf4 Rd8 19.Ke3 Bc4 20.Bc4 Qc4 21.Rd1 Rd1 22.Kf2 Qc2 23.Ke3 Nd5 24.Nd5 Rd5 25.f4 f5 26.gf5 Qf5 27.Ke2 Qd3 28.Kf2 Rf8 29.h4 Rf4 30.Kg2 Rdf5 31.h5 Rf2 32.Kh1 Qd1 0–1. Harris,Deborah Evalyn – Dragne,Daniel, Internet Section, 2004. (=1.Nc3 d6 2.b4 Nf6)

3.d4 g6 4.Nf3 Bg7 5.e3 (5.e4 0-0=) 5...a5 (5...0-0 6.Be2=) 6.b5 0-0 (6...d5 7.Be2=) 7.Bd3 (7.e4 a4=) 7...Nbd7 (7...c5 8.0-0=) 8.0-0 c5 (8...e5 9.de5 Ng4 10.Bb2 Nde5 11.h3 Nd3 12.cd3=) 9.bc6+= bc6 10.Rb1 Qc7 (10...Ba6 11.e4+=) 11.Ba3 Ba6= 12.e4 Nb6 13.Ba6+= Ra6 14.Re1 Nc4 15.Qd3 Na3 16.Qa6 Nb1 17.Rb1 Rc8 18.Rb7+/– Qd8 19.Re7! Qe7 20.Qc8 Bf8? 21.Qc6+– Qe6 22.Kf1 a4 23.d5 Qg4 24.e5 de5 25.Qf6 (25.Qf6 Qc4 26.Ne2 Qd5 27.Qe5 Qa2 28.Ned4+–) 1–0. Iwan – throgmodon, internet, 2009.

3.e4 Nc6 4.a3 e5 5.Bc4 Ne4 6.Ne4 d5 7.Bd3 de4 8.Be4 Nd4 9.c3 f5 10.Bb2 Qg5=.

3.Nf3 e5 4.e4 Be7 5.Bb5 c6 (5...Nc6 6.d4 0-0 7.Rb1=) 6.Be2 (6.Bd3 0-0 7.Qe2 d5=) 6...d5 7.ed5 (7.Ne5 de4 8.Bb2 Be6+=) 7...e4+= 8.dc6 (8.d6 Qd6 9.Ng5-/+) 8...ef3-/+ 9.cb7 Bb7 10.Bf3 Bf3 11.Qf3 Nbd7 12.a3 0-0 13.0-0 Ne5 14.Qe2 Ng6 15.d3 Rc8 16.Ne4 Ne4 17.de4 Qd7 (17...Qd4 18.Rb1-+) 18.Be3-/+ Bf6 19.Rab1 (19.Rad1 Qa4 20.Rd2 Qa3-+) 19...Rfe8 20.f3 Rc3 21.Rb3 (21.Rfd1 Qa4 22.Rb3 Rec8 23.Rc3 Rc3-+) 21...Rec8 22.Rd1 (22.Rc1 Bd4 23.Rc3 Rc3 24.Bd4 Qd4 25.Qf2 Qd7-+) 22...Qa4-+ 23.Bc5 (23.Rc3!? Rc3 24.Rd3 Ra3 25.Ra3 Qa3 26.b5-+) 23...Nf4 24.Qd2 Rb3 25.cb3 Qb3 26.e5 (26.Ba7 g5 (26...Qa3?! 27.Bf2 Ne6 28.b5-+) 27.Bf2 Rd8 28.Qd8 Bd8 29.Rd8 Kg7-+) 26...Bg5 (26...Be5?? 27.Qd8 Rd8 28.Rd8) 27.Qd7 Ra8 28.Bf2 (28.g3 Ne6 29.Qd5 Qd5 30.Rd5 Nc5-+) 28...h6 29.Re1? (29.Rf1 Nd3 30.e6 fe6 31.Qc6-+) 29...Nd3 30.Qb7 (30.Rf1 Nf2 31.Kf2 Qe3 32.Kg3 Qf4 33.Kf2 Qh2-+) 30...Re8 31.e6 (31.Qb5 Rc8 32.h4 Ne1 33.hg5-+) 31...Ne1 32.Qf7 (32.f4 Re6 33.fg5 Nd3-+) 32...Kh7 33.Qe8 (33.h4 Be3 34.Qf5 Kh8 35.Be3 Qe3 36.Kh2-+) 33...Nd3 34.h4 Qd1 35.Kh2 Bf4 (35...Nf2 36.hg5 hg5 37.Qh5 Kg8 38.Qf7 Kh7 39.Kg3= (39.Qa7?? Qh1 40.Kg3 Qh4)) 36.Bg3 Qe1 37.Bf4 (37.Qg8 Kg8 38.Bf4 Qh4 39.Kg1 Qf2 40.Kh2 Nf4 41.e7 Qg2) 37...Qh4 38.Kg1 Qf2 (38...Qf4?! 39.Qf7 Qe3 40.Kh2-/+) 39.Kh1 Nf4 40.Qg6 0–1. olsime (1955) – chess_research (2210), gameknot.com, 2014.

4.a3 Be7 5.Nf3 0-0 6.Be2 Nc6 7.d4 ed4 8.Nd4 Nd4 9.Qd4 Bg4 10.0-0 Be2=.

4.Bc4 c6 5.Nf3 b5 6.Bd3 a5 7.ba5 Na6 8.Qe2 Qa5 9.0-0 Nc5 10.Bb2 Be7-/+.

4.Nf3 d5 5.ed5 Bb4 6.Bb5 c6 7.dc6 bc6 8.Be2 e4 9.Ne5 Qd4 10.Nc4 Be6=+.

3.a3 a5 4.b5 d5 5.d4 ed4 6.Qd4 Be6 7.Bg5 Nbd7 8.Nf3 Bc5 9.Qd3 Qe7 10.e3 0-0=+.

3.a3 c6 4.g3 d5 5.Bb2 d4 6.Na4 b5 7.Nc5 Qb6 8.Nf3 Bc5 9.bc5 Qc5 10.Bg2 0-0 11.c3 Bf5 (better is 11...dc3!? 12.Rc1 e4 13.Rc3 Qd6-/+) 12.cd4= ed4 13.Nd4 Re8?? (better is 13...Be4 14.f3 Bg6=) 14.Rc1+– (14.Nf5?! Qf5 15.Rc1 Qe6=) 14...Qb6 15.Nf5 Ne4 16.Be4 Re4 17.Ng7 Na6 18.Qc2 Nc5 19.e3 Rc4 20.Qb1 Qd8?? 21.Rc4 bc4 22.0-0 c3 23.Bc3 Qg5 24.Qf5 Qd8 25.Qc5 f6 26.Nh5 Rb8 27.Bf6 Qd2 28.Qa7 Kf8 29.Qe7 Kg8 30.Qg7 1–0. hotchess (2235) – dweigel (1940), net–chess.com, 2011.

3.a3 Nc6 4.Nf3 (4.e4 d5 5.ed5 Nd5=+) 4...Bd6 (4...e4!? 5.b5 Na5=+) 5.e4= a6 6.Bc4 h6 7.d3 b5 8.Bb3 Bb7 9.0-0 Qe7 (9...0-0 10.Be3+=) 10.Nd5+- Nd5 11.ed5 Nd4? (better 11...Nd8+-) 12.Nd4+- ed4 (12...Qf6 13.Ne2+-) 13.Re1 Be5 14.f4 0-0 (14...d6 15.fe5 de5 16.Qh5+-) 15.fe5 Rae8 (15...a5 16.Qg4 Kh8 17.ba5+-) 16.Qg4 d6 (16...Kh8 17.Bb2 Bc8 18.Bd4+-) 17.Bh6 g5 (17...f5 18.Qg3 Qf7+-) 18.Bg5 f6 19.Bf6 (19.Bf6 Kh7 20.Qh5 Kg8 21.Qg6 Qg7 22.Qg7) 1-0. Panza (2715) - robarob (1690), ChessWorld.net, 2017.

3.Ba3 Nc6 4.Rb1 (4.Qc1 Bb4 5.Bb4 Nb4-/+) 4...a6 (4...a5 5.b5 Ba3 6.bc6 dc6 7.e3-+) 5.e3 b5 (5...a5 6.b5 Ba3 7.bc6 dc6 8.Bd3-+) 6.Be2 (6.Nf3!?=+) 6...d5-/+ 7.d4 e4 8.g4 g5 (better 8...h6 9.h4 Bd7-/+) 9.Nh3? (9.h4!? gh4 10.Rh4-/+) 9...h6 (9...h5!? 10.Ng5 hg4 11.Kd2-+) 10.f3 a5 (10...ef3 11.Bf3 h5 12.Nf2-+) 11.Nb5 (better 11.Bb5 Bd7 12.Bc6 Bc6 13.0-0+=) 11...ab4-+ 12.Bb2 (better 12.Bc1 ef3 13.Bf3 Ra2 14.c4-/+) 12...Ba6?? (12...ef3 13.Bf3 Ne7 14.e4 de4 15.d5 Ned5 16.Be4-+) 13.f4? (13.fe4 Ne4 14.Bd3 Bg7-/+) 13...Bb5?? (better 13...Ng4 14.Qd2 Na5-+) 14.Bb5= Qd6 15.fg5 (better 15.c4!? Ra2 16.Qe2+=) 15...hg5-/+ 16.Bc6?? (better 16.Nf2-/+) 16...Qc6-+ 17.Ng5 Rg8 (better 17...Bh6 18.Nh3 Be3-+) 18.h4-/+ Bh6 19.Ra1 Kd7 (better 19...Ke7!?-/+) 20.Nf7=+ Be3?? (better 20...Ng4 21.Qg4 Rg4 22.Ne5 Kd6 23.Nc6 Kc6=+) 21.Ne5+– Kd6 22.Nc6 Kc6 23.g5 Ng4 (23...Ne8 24.Qg4 Rf8+–) 24.Qg4 1–0. megarex – antonio37, gameknot.com, 2014.

3.Ba3 Bd6 4.e4 0-0 5.Bc4 a6 (5...a5 6.Bb2 Bb4 7.Nf3-/+) 6.Qf3 b5 7.Bb3 Bb7 8.0-0-0 (better 8.g4!?-/+) 8...Nc6 9.Nge2 Nd4 10.Nd4 ed4 11.Nd5 c5?? (better 11...Bd5 12.Bd5 c6-+) 12.bc5 (12.Nf6!? Qf6 13.Qf6 gf6 14.bc5+-) 12...Be5 13.Nf6 Bf6 14.c6 dc6 15.Bf8 Qf8 16.d3 (16.Rhe1 Re8+=) 16...c5 (better 16...a5 17.a4 ba4=+) 17.h4?? (17.Rde1 Re8+=) 17...a5?? (17...c4 18.Kb1 Rc8 19.Qf4-+) 18.a4?? (18.Bd5 Bd5 19.ed5 Rd8+=) 18...Qe8?? (better 18...c4 19.dc4 Qa3 20.Kd2 Qb4 21.Ke2 bc4-+) 19.Rde1 ba4 20.Ba2 Bc6 21.h5 Bd7 22.h6 g6?? (better 22...Qe5 23.Rh5 g5+=) 23.Qf6+- Qf8 24.e5 (better 24.f4 Rc8 25.Bd5+-) 24...Rc8 (24...Re8 25.Qd6 Qe7 26.Qe7 Re7 27.c3 dc3 28.Rh4+-) 25.f3 (better 25.e6 fe6 26.Be6 Be6 27.Qe6 Kh8+-) 25...Rc6 26.Qf4 (26.e6 fe6 27.Re6 Be6 28.Be6 Re6 29.Qe6 Kh8 30.Kb1 Qb8 31.Ka1 Qf8 32.Qe5 Kg8 33.Rb1 c4 34.Qe6 Kh8 35.Qf6 Kg8 36.Rb8 Qb8 37.Qg7) 26...g5 (26...Be6 27.Be6 Re6 28.Kd2+-) 27.Qg5 Rg6 28.Qf4 Kh8 (28...a3 29.g4+-) 29.Rh4 (better 29.e6 Be6 30.Re6 c4 31.Qd4 f6+-) 29...a3 (29...Be6 30.Be6 Re6+-) 30.Qe4 (30.e6 Be6 31.Re6 c4 32.Qd4 f6+-) 30...f5 (30...Qb8 31.e6 Qb2 32.Kd1 Qa2 33.Qe5 f6 34.Qb8 Rg8 35.Qg8 Kg8 36.ed7 Qb1 37.Ke2 Qb6 38.Rg4 Kf7+-) 31.Qf4 (better 31.ef6 Rf6 32.Qe5 c4+-) 31...Qb8 (31...Be6 32.Be6 Re6+-) 32.Bf7 (32.e6 Qb2 33.Kd1 Qa1 34.Qc1 Qc1 35.Kc1+-) 32...Qb2-+ 33.Kd2 (33.Kd1 Rg2 34.Qd2 Rd2 35.Kd2-+) 33...Rg2 34.Re2 Qc3 35.Kd1 Rg1 (35...Rg1 36.Re1 Re1) 0-1. WarlpiriMan – Tigiano, ChessWorld.net, 2020.

3.Na4 Bb4 4.Rb1 Nc6-+.

3.Na4 Ng4 4.f3? (better is 4.e3 d5 5.Be2=+) 4...Bb4?? (better is 4...Nf2 5.Kf2 Qh4 6.g3 Qd4 7.Ke1 Qa1-+) 5.Rb1?? (better is 5.fg4 Qh4 6.g3 Qg4 7.Bg2+=) 5...Nf6 (better is 5...Ne3! 6.Rb4 Nd1 7.Kd1 d6-+) 6.Rb4+– c6 7.Bb2 0-0 8.Re4?? d5?? 9.Re5+– a5 10.Re3 Nh5 11.Re5?? h6 12.Nh3 Nd7?? 13.f4 b5?? 14.Nc3 Nc5?? 15.f5?? Qe8?? 16.Nf4 Nd7?? 17.h4 Qe7?? 18.Rd5 c5?? 19.g4 c4?? 20.a3 Ra7?? 21.a4 (21.a4 Nf4 22.Rd4+=). bwebbs – rahab, net–chess.com, 2001.

3.Bb2 d5 4.e3 e4 5.a3 Be6 6.f3 a6 7.Be2 Nc6 8.d3 ef3 9.Nf3 Bd6 10.0-0 Ng4 11.Qd2 Ne7 12.h3 Nf6 13.Nd1 Qd7 14.c3 Nf5 15.e4 Ng3 16.Rf2 Bh3 17.gh3 Qh3 18.Rh2 Ne2 19.Qe2 Bh2 20.Nh2 0-0 21.e5 Rae8 22.d4 Ne4 23.Qg2 Qg2 24.Kg2 f5 25.Nf2 c6 26.Nd3 b6 27.a4 g5 28.Rc1 Nd2 29.Re1 g4 30.Bc1 Ne4 31.Bb2 h5 32.Nf4 g3 33.Nf3 Rf7 34.Nh5 Ree7 35.Re2 Rh7 36.Nf6 Nf6 37.Re1 Ne4 38.Re2 f4 39.Ba1 Reg7 40.Bb2 Kf7 41.Rc2 Ng5 42.Bc1 Nf3 43.Kf3 Rh2 44.Rg2 Rg2 45.Kg2 Rg4 46.Bd2 Ke6 47.Bc1 Kf5 48.Bd2 Ke4 White resigned 0-1. bertomeeggo (1865) - arvek (1775), ChessWorld.net, 2020.

3.b5 d5 4.e3 d4 5.ed4 ed4 6.Qe2 Be7 7.Ne4 Bg4?? (better is 7...0-0-/+) 8.Nf6+– gf6 9.Qg4 (9...c6 10.Qg7+–) 1–0. Taulien,Christian (1945) – Lommel,Lasse (1855), remoteschach.de, 2004.

3.e3 d5 4.h3 Be7 5.b5 b6 6.a4 0-0 7.g4 Nbd7 8.Bg2 e4 9.d3 ed3 10.Qd3 Nc5 11.Qd1 a6 12.ba6 Ba6 13.Nd5 Rb8 14.Nf6 Bf6 15.Qd8 Rbd8 16.Ra3 Rfe8 17.Bc6 Re6 18.Bb5 Bb5 19.ab5 Red6 20.Nf3 Rd1 21.Ke2 Rh1 22.Bd2 Rh3 23.g5 Be7 24.Ra7 g6 25.Rc7 Ne4 26.Re7 Nd2 27.Nd2 Rh2 28.Rb7 Rd5 29.Rb6 Rg5 30.Nf3 Rgg2 31.Nh2 Rh2 32.c4 Rh5 33.Rc6 Re5 34.c5 h5 35.b6 Re8 36.Rc7 Kg7 37.c6 Rb8 38.b7 Kh6 39.Rf7 Kg5 40.f4 Kh6 41.Kf3 g5 42.fg5 Kg5 43.e4 h4 44.Rc7 h3 45.Rh7 Rf8 46.Kg3 Kg6 47.Rh3 Rf7 48.b8Q Kg7 49.e5 Re7 50.Qh8 Kf7 51.Qf6 Ke8 52.Rh8 Black king mated 1-0. DaTruth123 (1635) - lakeman3 (1625), ChessWorld.net, 2015. (=1.Nc3 Nf6 2.b4 e5)

3.e4 Nc6 4.Nf3 (4.b5!? Nd4 5.Nf3=+) 4...Bb4-/+ 5.Be2 (5.Bc4 d6-/+) 5...d6 (5...Bc3 6.dc3 Ne4 7.Bc4-+) 6.Nd5 (6.Bd3 0-0-/+) 6...Nd5 (better 6...Ne4!? 7.0-0 0-0-+) 7.ed5-/+ Nd4 (7...Ne7!? 8.c3 Ba5-/+) 8.Nd4=+ ed4 9.Bb2 (9.c3 Qe7 10.cb4 d3=+) 9...Qg5 (9...Bc5 10.Bb5 Bd7 11.Bd7 Qd7 12.Qe2 Qe7 13.Rb1=+) 10.0-0 (10.Bd4 Qd5 11.c3 Bc5=+ (11...Qg2? 12.Bf3 Qg6 13.Qe2 Kd8 14.cb4+–)) 10...Bh3 (10...0-0 11.Bd4 Bh3 12.Bf3 Bd2 13.c3=+) 11.Bf3 (11.Bb5 c6 12.Re1 Kf8=) 11...0-0-0 (11...0-0 12.Re1=+) 12.Bd4=+ Rde8 (better 12...Bd2 13.Kh1 Bf5=+) 13.Ba7?? (better 13.Be3 Qg6 14.c3+=) 13...Bc5?? (better 13...b6 14.Qb1 Bg4 15.Bg4 Qg4-/+) 14.Bc5+– dc5 15.c4 (better 15.Rb1 b6 16.d4+–) 15...Re5? (15...Bf5 16.d4 cd4 17.Qd4+–) 16.Re1?? (better 16.d6 cd6 17.Rb1+–) 16...Rhe8 17.Rf1 Re2?? (better 17...Rh8 18.d6 cd6+–) 18.Qa4+– R8e7 (18...Kd8 19.Qa8 Kd7 20.Qb7 Rd2 21.Rab1+–) 19.d6 Rd7 (19...cd6 20.Qa8 Kc7 21.Qb7 Kd8 22.Qb6 Rc7+–) 20.Qa8 1–0. raven_king – hogbendeciple, gameknot.com, 2014.

3.e4 d5 4.ed5+= Nd5 (4...Bb4 5.Bb5 (5.Bc4+= c6 6.dc6 Bc3 7.dc3 Qd1 8.Kd1 Nc6-/+) 5...c6 6.dc6 bc6 7.Bd3 Bc3 8.dc3 Qd5+=) 5.b5 (5.Nd5 Qd5 6.a3 a5+= 7.b5 Bd6 8.Bb2 0-0+=; 5.a3 Nc3 6.dc3 Qd1 7.Kd1 Bd6 8.Nf3 Nc6+=; 5.Qe2 Nb4 6.Qe5 Be7 7.Kd1 0-0 8.a3 N4c6-/+; 5.Qh5 Nb4 6.Qe5 Be7 7.Kd1 0-0 8.a3 N4c6-/+) 5...Nc3-/+ 6.dc3 Qd1 7.Kd1 c6 (7...Bd6 8.Nf3 a6-/+) 8.Nf3 (8.c4 Be7+=) 8...f6 (8...Bd6-/+) 9.a4 Bc5 10.Nd2 (10.Be3!? Be3 11.fe3+=) 10...Bf2-/+ 11.Ne4 Bb6 12.Ba3 (12.a5 Bc7-/+) 12...Nd7?? (12...cb5 13.Ke1 Be6 14.Nd6 Kd8-/+) 13.Nd6+– (13.Nd6 Kf8 14.Nc8 Bc5 15.Nd6 Ba3 16.Ra3+/–) 1–0. Janek – Vesely, internet, 2016.

3.Nf3 Bb4 4.Ne5 d6 5.Nd3 Ba5 (5...Bc3 6.dc3 Ne4 7.e3-/+) 6.Ba3 (6.Bb2 0-0=) 6...0-0 (6...Bc3 7.dc3 0-0 8.e3-/+) 7.Rb1 (7.Bb2 d5=+) 7...Qe7 (7...Bc3 8.dc3 Ne4 9.Bb2-/+) 8.Rb5 (8.Bb4 Bb4 9.Nb4 Be6=+) 8...Nc6 (8...Bc3 9.dc3 a6 10.Rb3-/+) 9.Nd5 (better is 9.Bb2-/+) 9...Qe4 (better is 9...Nd5 10.Rd5 Qe4-/+) 10.Nf6+= gf6 11.e3 Re8 12.Bb2 a6 13.Rh5 Bg4=+ 14.Be2 Bh5-/+ 15.Bh5 Nd4 16.Bd4 c5?? 17.Bf6 Re6 18.f3 Qa4?? 19.f4?? Rf6=+ 20.Qg4 Kf8-/+ 21.0-0 Bd2 22.Qg5? Be3-+ 23.Kh1 Ke7?? 24.Nc5?? Qc2?? 25.Ne6?? h6 26.Qg3 Qd3 27.Re1?? Re6 28.f5 Re4 29.Rc1 Bc1 30.Qd3 0–1. bsmiley – sonrisante, net–chess.com, 2003.

3.Nf3 e4 4.Nd4 Bb4 5.Ncb5 0-0 6.e3 d5 7.Be2 c5 (7...a6 8.Na3-+) 8.Nb3 a6 9.Nc3 (9.a3 Ba5 10.Na5 Qa5-/+) 9...d4-+ 10.ed4 (10.Nb1 d3 11.cd3 ed3-+) 10...cd4 11.Ne4? (11.a3 Be7 12.Nb1-+) 11...Ne4 12.0-0 Nc6 13.d3 (13.Rb1-+) 13...Nc3 14.Qd2 Re8 15.Bf3 Ne2! 16.Be2 (16.Qe2 Re2 17.Be2-+) 16...Bd2 17.Bd2 Re2 18.Rad1 Be6 19.Nc5 (19.h3 Bb3 20.ab3 Ne5-+) 19...Qe7 (better 19...Ba2 20.Ne4-+) 20.Rde1 Re1 21.Be1 Qc5 22.g3 Bh3 23.Bb4 Nb4 24.Re1 (24.f4 Qc2 25.Rf2 Qc1 26.Rf1 Qf1) 24...Qc6 25.f3 (25.Re4 Qc3 26.Re8 Re8 27.f4 Qe1) 25…Qf3 (25...Qf3 26.Re8 Re8 27.c3 Re1) 0–1. Al Durazi,Zainab Ali – Fierro Baquero,Martha L (2365), World Blitz Women, 2017.

3.h3 Bb4 4.Bb2-+.

3.h3 Nc6 4.Nf3 (better is 4.b5!? Nd4 5.e3=+) 4...Bb4-+ 5.Bb2 0-0 6.e3 e4 7.Nd4 (7.Nh2 d6-+) 7...Nd4 8.ed4 d5 9.f4 Re8 10.Qe2 e3! 11.de3 Bc3 12.Bc3 Ne4 13.Qb5 Nc3 14.Qb3 Re3 15.Kf2 Qe7 16.a4 Qe4 17.Bb5 Bf5 18.Rhe1 Qf4 19.Kg1 Ne2! 20.Re2 Rb3 21.Re8 Re8 22.Be8 Qd4 23.Kh2 Qa1 (23...Qa1 24.cb3 Qe5 25.Kh1 Qe8 26.Kh2 Qe5 27.Kg1 Qe2 28.Kh2 Be4 29.Kg3 g5 30.b4 Qg2; 23...Rh3 24.gh3 Qf2 25.Kh1 Be4) 0–1. esko – rkgoss, net–chess.com, 2001.

3.h4 Bb4 4.Bb2-+.

3.h4 d5 4.e3 (4.a3!?-/+) 4...Bb4-+ 5.Nce2 (5.Bb2 0-0-+) 5...Nc6 6.Ng3 Be6 (6...0-0 7.Bb2-+) 7.Rb1 Ba5 (better is 7...Rb8!?-+) 8.Rb7=+ Bb6 9.Ba3? (better is 9.Bb5 Bd7 10.Nh5-/+) 9...Bc8-+ 10.Qb1?? (10.Ba6 Na5 11.Bb5 Bd7 12.Rb6 ab6 13.Bd7 Qd7 14.Bb4-+) 10...Bb7 11.Bb5 Ng4 12.e4 Bf2 13.Kd1 Bg3 14.Qb3 Nf2 (14...Nf2 15.Kc1 Nh1 16.ed5 Qd7-+) 0–1. tarmstrong – joelo, net–chess.com, 2000.

4.d4 e4 5.h3 Bd6 6.Bg5 c6 7.e3 Be6 8.f3 Bg3 9.Ke2 h6 10.Bf4?? (10.Bf6!? Qf6 11.fe4=) 10...Bf4 (better is 10...Nh5 11.Kd2 Nf4 12.ef4 Bf4 13.Ke2 0-0-+) 11.ef4-/+ Bf5 12.Kf2 Qe7 13.fe4 Ne4 14.Ne4 Qe4 15.Qe1 0-0 16.Qe4 de4 17.Ne2 Re8 18.Ke3 Nd7 19.Ng3 Bh7 20.Bc4 Nb6 21.Bb3 Nd5 22.Bd5 cd5 23.Rhe1 Rac8 24.Rac1 Rc3 25.Kf2 Rec8 26.f5? Rc2-+ 27.Rc2 Rc2 28.Re2 Re2 29.Ke2 Kf8 30.Ke3 Ke7 31.Kf4 Kd6 32.Ne2 a6 33.g4 Bg8 34.Nc3 g6 35.fg6 fg6 36.a4 Be6 37.a5 g5 38.Kg3 Bd7 39.h4 Ke6 40.Kh3 Kd6 41.Kg3 Be6 42.Na4 Kc6 43.Nc3 e3 44.h5 e2! 45.b5? ab5 46.Ne2 b4 47.Nc1 Kb5 48.Nb3 Kc4 49.Nc5 Bc8 (49...Bc8 50.Kf3 Kd4-+) 0–1. jcekota (2105) – birdmove (2250), net–chess.com, 2011.

4.e3 c5 5.Bb5 (5.bc5 Bc5 6.d4 ed4 7.ed4 Be7+=) 5...Nc6 (5...Bd7 6.bc5 Bb5 7.Nb5 Bc5 8.Rb1+=) 6.Bc6 (6.bc5 Bc5 7.d4 Bd6+=) 6...bc6-/+ 7.bc5 Bc5 8.h3 (8.Nf3 Bd6-/+) 8...0-0 (8...Bd6 9.Bb2-/+) 9.Nf3 Ba6 (9...Bd6!?-/+) 10.Ne5+= Qd6 (10...d4 11.Na2+= (11.Nc6? Qc8-+)) 11.d4= Bb6 12.Nd3 (12.Bd2 c5 13.dc5 Bc5=) 12...Bc7 (12...Rfe8 13.Ne2=) 13.Ne2. pillsbury (1995) – shiningknight (2000), net–chess.com, 2008.

4.e3 c6 5.Be2 (5.Nf3 Bd6+=) 5...g6 (5...a5 6.b5+=) 6.d3 (6.Bb2 e4=) 6...Bg7 (6...a5 7.b5+=) 7.h3 (7.Nf3 Qd6=) 7...0-0 (7...a5 8.Bb2+=) 8.Nf3= Nbd7 9.0-0 Nb6 10.a4 Be6 11.Ne5 Qc7 12.d4+= Nbd7 13.Nd7+/– Qd7 14.a5 b6 15.ab6 ab6 16.Ra8 Ra8+= 17.Bb2 c5 18.Bb5 Qd6 19.bc5 bc5 20.dc5 Qc5+/– 21.Bd3 Rb8 22.Ba1+/– Nd7 23.Na4 Qa5 24.c3 Ra8 25.Bc2= Nc5 26.Nc5 Qc5 27.Re1 Bc3 28.Bc3 Qc3 29.Qd2?? Qc5 30.Rc1 Qa3 31.Bd3 Rb8 32.Qd1 Rb2 33.Ra1 Ra2 34.Rb1 Kg7 35.e4 de4 36.Be4 Qa7 37.Qd4?? Qd4-+ 38.Rf1 Qe4 39.f3 Qc2 40.Rf2 Ra1 41.Rf1 Qc5 42.Kh2 Rf1 43.Kg3 Qd6 44.Kh4 Qf4 45.g4 Rf3 (45...Qe5 46.f4 Qe1 47.Kg5 h6) ½–½. iboyd (1950) – losertoo (1860), net–chess.com, 2006.

4.e3 Nc6 5.Bb5 Bd7 6.Bb2 a6 7.Ba4 d4 8.ed4 b5 9.Bb3 Nd4 10.Nge2 Qe7 11.0-0 Nb3 12.cb3 Bc6 13.f3 Qd8 14.g4 Bd6 15.Ng3 0-0 16.Nce4 Ne4 17.fe4 Re8 18.d3 Bd7 19.Nf5 Bf5 20.Rf5 g6 21.Rf3 Qg5 22.Kg2 Qg4 23.Rg3 Qe6 24.h4 Be7 25.h5 Kf8 26.hg6 fg6 27.Qc2 Bh4 28.Rf1 Kg8 29.Rgf3 Qg4 30.Kh2 Bg5 31.Qc7 Bf4 32.Kh1 Qh3 Black resigned 1-0. DaTruth123 (1640) - nicholasc (1870), ChessWorld.net, 2014. (=1.Nc3 e5 2.e3 d5 3.a3 Nf6 4.b4 Nc6)

4.e3 Nc6 5.d3 a6 6.h3 Bd6 7.d4 b5 8.Nf3 0-0 9.Bd3? (9.de5 Ne5 10.Be2 Nf3 11.Bf3 c6-/+) 9...Bb7?? (9...e4 10.Nd5 ed3 11.Nf6 Qf6 12.Qd3-+) 10.0-0? (better is 10.de5 Ne5 11.0-0=+) 10...e4-+ 11.Be2 ef3 12.Bf3 Ne7 13.Rb1 Bc8 14.a4 Ne4 15.Ne4-/+ de4 16.Be4 Rb8 17.a5 Be6 18.d5? Bd7 19.Qf3 f5 20.Bd3 c6 21.c4 f4 22.ef4 Rf4?? 23.Bf4+– Qc7 24.Bd6 Qd6 25.Rbd1 cd5 26.cd5 Nd5 27.Kh1 Bc6 28.Qg4 Rf8 29.Be4 Qe5 30.Bd5 Bd5 31.Rfe1 Qd6 32.Kg1 Rd8 33.Rd4 Qf6 34.Red1 Qf7 35.Qg5 h6 36.Qd8 Kh7 37.Rd5 (37...Qg6 38.Qc8+–) 1–0. erch – dugmak, ChessWorld.net, 2005.

4.e3 Bd6 5.Nb5 Be7=+.

4.e3 Bd6 5.Bd3 0-0-/+ 6.e4 d4 7.Nb5 (7.Nce2!?-/+) 7...Be7-+ 8.c3 (better is 8.a4-+) 8...a6 9.Nc7 Qc7 10.Nh3 (10.cd4 ed4 11.Bb2 Nc6-+) 10...dc3 11.0-0 (11.Ng5 a5 12.ba5 Nfd7-+) 11...Bh3 12.gh3 Rd8 13.Qc2 Qd7 14.Qc3 (14.Bc4 cd2 15.Bb2-+) 14...Qd3 15.Qe5 Nc6 16.Qc7 (16.Qg3 Qe4 17.Qg2 Ne5-+) 16...Qh3 (better is 16...Bd6 17.Qd8 Rd8-+) 17.Qb7 (17.Qg3 Qg3 18.hg3 Ne4 19.Ra2-+) 17...Bd6 (17...Ng4 18.Qc7 Rd6 19.Qd8 Rad8 20.Re1 Qh2 21.Kf1 Qf2) 18.Qc6 Qh2 0–1. Turm87@ – NN, mySchach.de, 2004.

4.e3 Bd6 5.Qf3 Bg4 6.Qg3 g5 7.f3 e4 8.Qf2 Bf5 9.fe4 Be4 10.d3 Bg6 11.Nf3 Ng4 12.Qe2 c6 13.h3 Bg3 14.Kd1 Nf2 15.Kd2 Nh1 16.Nd1 Nd7 17.Bb2 0-0 18.Nc3 Re8 19.a4 Re7 20.Ng5 Bf2 21.e4 de4 22.Nce4 Be4 23.Ne4 Nb6 24.Qg4 Kf8 25.Qg7 Ke8 26.Nf6 Black king mated 1-0. DaTruth123 (1675) - Nexus60000 (1805), ChessWorld.net, 2013.

4.e3 Nbd7 5.Bb2 a6 6.Nf3 Be7 7.h3 0-0 8.d3 b5 9.g4 e4 10.de4 de4 11.Ng5 Bb7 12.Bg2 Rb8 13.Be4 Be4 14.Nge4 Ne4 15.Ne4 Bh4 16.Qd4 Bf6 17.Nf6 Nf6 18.Qc3 Rb6 19.g5 Ne8 20.h4 Qd5 21.Ke2 Rc6 22.Qd3 Qd3 23.Kd3 Nd6 24.f4 Nf5 25.Bd4 Rd8 26.c3 Nd4 27.cd4 Rc4 28.h5 Rd6 29.Rhc1 Rc1 30.Rc1 Rd7 31.Rc6 Kf8 32.Ra6 Ke7 33.e4 h6 34.gh6 gh6 35.Rh6 Kf8 36.f5 Kg7 37.Rc6 f6 38.h6 Kh6 39.Rf6 Kg7 40.Rc6 Kf7 41.Rc5 c6 42.Rc6 Rb7 43.e5 White claimed a win on time 1-0. DaTruth123 (1715) - lakeman3, ChessWorld.net, 2014. (=1.Nc3 e5 2.e3 d5 3.a3 Nf6 4.b4 Nbd7)

4.e3 Nbd7 5.Nf3 a5 6.b5 Bd6 7.Be2 0-0 8.0-0 Nb6 9.Bb2 Re8 10.d3 a4 11.Re1 Qe7=+.

4.e3 Nbd7 5.Nf3 a5 6.b5 Bd6 7.Be2 0-0 8.0-0 Nb6 9.d3 a4 10.Qd2 Qe7=+.

4.e3 Nbd7 5.Nf3 a5 6.b5 Bd6 7.Be2 c5 8.bc6 bc6 9.Bb2 0-0 10.0-0 Qe7=+.

4.e3 Be6 5.h3 a6 6.d3 Bd6 7.g4 h6 8.Bb2 c5 9.bc5 Bc5 10.Qd2 Nc6 11.Na4 Bd6 12.Bg2 b5 13.Nc3 b4 14.ab4 Bb4 15.Nf3 0-0 16.0-0 Nd7 17.Qd1 Nb6 18.Ne2 Bd6 19.c3 Nd7 20.Nd2 f5 21.gf5 Rf5 22.e4 de4 23.Be4 Rg5 24.Kh2 Nc5 25.Bc6 Rb8 26.Ba3 Bh3 27.Kh3 Qc8 28.Kh2 Rh5 29.Kg1 Qh3 30.Re1 Qh1 31.Bh1 e4 32.Be4 Bh2 33.Kg2 Ne6 34.Ng3 Nf4 35.Kf3 Rh3 36.Kf4 g5 37.Kf3 Rf8 38.Kg2 Rh4 39.Bf8 Kf8 40.Ra6 Black resigned 1-0. DaTruth123 - EarlofDarwell (1890), ChessWorld.net, 2016. (=1.a3 d5 2.Nc3 e5 3.e3 Nf6 4.b4 Be6)

4.e3 Be7 5.Bb2 0-0 6.Nf3 Nbd7 7.Be2 c6 8.0-0 e4 9.Nd4 Ne5 10.d3 ed3 11.cd3 Bd6 12.e4 Bg4 13.Bg4 Nfg4 14.f4 Ne3 15.Qe2 Nf1 16.fe5 Be5 17.Rf1 Bd4 18.Kh1 Bc3 19.Bc3 d4 20.Bb2 b6 21.Qg4 c5 22.bc5 bc5 23.e5 Qe7 24.Rf5 f6 25.ef6 0-1. Buanga123 (1765) - zhiobris (1775), lichess.org, 2020.

4.e3 Be7 5.Bb5 c6 6.Ba4 (6.Be2 a5 7.b5 0-0+=) 6...b5-/+ 7.Bb3 0-0 8.h3 (8.Nf3 a5 9.ba5 Bd6-/+) 8...d4 (8...a5 9.Bb2-/+) 9.ed4 Qd4 (better is 9...ed4!? 10.Nce2 a5 11.ba5 Ra5-/+) 10.Nf3= Qb6 (10...Qd6 11.Qe2 a5 12.ba5=) 11.0-0 (11.Ne5 Bd6 12.d4 a5 13.ba5 Qc7+=) 11...a5= 12.ba5 (worse is 12.Ne5 ab4 13.Nb1 Qd4-/+) 12...Ra5 (12...Qc7 13.Re1 Bd6 14.d4 ed4 15.Qd4=) 13.Bb2 (13.Ne5!? Nbd7 14.d4+=) 13...e4 (13...Nbd7 14.Qe2=) 14.Ng5 c5 15.Nge4 (15.Re1 c4 16.Ba2 Bb7=) 15...Ne4+= 16.Ne4 c4 17.Ba2 Ba3 18.Bc3? (better is 18.Ba3!? Ra3 19.Qc1=) 18...b4-+ 19.Be5?? (better is 19.Qb1 Nd7 20.Bb2-+) 19...Re5 20.Ng3 (20.Qf3 Bb7 21.d3 cd3 22.cd3 b3-+) 20...Be6 (20...Qc6 21.d4 Rd5 22.Ne2-+) 21.Kh1 (21.d3 Rd8 22.Qb1 cd3 23.cd3 Qa6-+) 21...Ra5 (21...Qc6 22.Kg1-+) 22.Rb1 Nc6 (22...Qd4 23.d3 b3 24.cb3-+) 23.Qe2 (23.f4 Qd4-+) 23...b3 24.cb3 cb3 25.Bb3 Bb3 26.Qd3 (26.Qe3 Rb5-+) 26...Rb5 27.Qc3 (27.Ne4 Rd8 28.Qe3 Ne5-+) 27...Bd6 (27...Rb8 28.Ne2-+) 28.Ne4 (28.Nf5 Rf5 29.Qb3 Qd4-+) 28...Bd5 29.Rb5 (29.Rbe1 Rb3 30.Qc1 Ne5-+) 29...Qb5 30.Re1 (30.Nf6 gf6 31.Re1 Qb4-+) 30...Be4 31.Kg1 (31.Qe3 Bd3-+) 31...Bd5 (31...Re8 32.Qa1 Nb4 33.d4-+) 32.Rc1 (32.d3 Rd8-+) 32...Re8 33.d3 Bg2! 34.Kg2 Qg5 35.Kf1 Bh2 36.Qc6 (36.Qg7 Kg7 37.Rc6 Qg1) 36...Qg1 0–1. pillsbury – parducgaloca, net–chess.com, 2017.

4.e3 Be7 5.Nf3 a5 6.b5 e4 7.Nd4 0-0 8.Bb2 c5 9.bc6 bc6 10.d3 c5=+.

4.e3 Be7 5.Nf3 a5 6.b5 e4 7.Nd4 c5 8.bc6 Nc6 9.Ncb5 0-0 10.Be2 Nd4=.

4.e3 Be7 5.Nf3 a5 6.b5 e4 7.Nd4 c5 8.bc6 Nc6 9.Ncb5 Rb8 10.Bb2 Nd4=.

4.e3 Be7 5.Nf3 a5 6.b5 e4 7.Nd4 c5 8.bc6 Nc6 9.Ncb5 Rb8 10.Bb2 Bg4 11.f3 Nd4=.

5.Bb2 ab4 6.ab4 Ra1 7.Qa1 Bb4 8.Qa8 Nc6 9.Bb5 0-0 10.Na2 (10.Bc6 bc6 11.Qc6 Bd7-/+) 10...Bd6 11.Nf3 (11.Bc6 bc6 12.Qc6 Bd7-+) 11...Qe7 (11...e4 12.Nd4 Nd4 13.Bd4-+) 12.Qa4 e4 13.Nd4 Nd4 14.Bd4 c6 15.Be2 Be6 16.0-0 Qc7 17.g3 Bh3 18.Rb1 b5 19.Qb3 Ng4 20.Nb4 Ne5 21.Ra1 Nf3 (21...Rc8!?-/+) 22.Bf3+= ef3 23.Qc3 Bb4 24.Qb4 Qd7 25.Ra7 Qf5 26.d3 h5 27.Qe7 Rc8 28.Qc5 h4 29.Qe7 hg3 30.hg3 Bg2 (30...Qg6 31.Qh4 Be6 32.Bc5+=) 31.Bc5 (31.g4 Qg6 32.Qd7 Rf8=) 31...Qh5 32.Qh4 Qe5 33.Qg4 Qc3?? (better is 33...Qe6 34.Qe6 fe6+=) 34.Qc8+– Kh7 35.Qf5 (35.Qf5 Kh6 36.Qf4 Kh7 37.Qh4 Kg6 38.g4 Qe1 39.Kh2 Qh1 40.Kg3 Qh4 41.Kh4+–) 1–0. JenSpeed (2225) – NoPawnPlease (2060), FICS rated standard game, 2013. (=1.Nc3 e5 2.a3 d5 3.b4 Nf6 4.e3 a5)

5.Bb2 ab4 6.ab4 Ra1 7.Qa1 Bb4 8.Nb5 Ne4 9.Nf3 f6 10.Qa4 Nc6=+.

5.Bb2 Bg4 6.Be2 Be2 7.Nge2 ab4 8.ab4 Ra1 9.Qa1 Bb4 10.Na2 Bc5 11.Be5 Nbd7=.

5.b5 Bd6 6.Bb2 0-0 7.Nf3 c5 8.bc6 bc6 9.Be2 Qc7 10.Rb1 Nbd7=+.

5.b5 Bd6 6.Bb2 0-0 7.Nf3 Re8 8.Be2 Qd7 9.0-0 Qe7 10.Na4 Bg4 11.h3 Bf3=+.

5.b5 Bd6 6.Bb2 0-0 7.Nf3 Re8 8.Be2 Qd7 9.0-0 Qe7 10.d3 Rd8=+.

5.b5 Bd6 6.Bb2 0-0 7.Nf3 Re8 8.Be2 Bf5 9.0-0 Nbd7 10.d3 Nb6=+.

6.ed4 ed4 7.Nb1 Ra5 8.Nf3 Bf5 9.Be2 Bc5 10.d3 0-0=+.

6.ed4 ed4 7.Nb1 Be7 8.Bb2 Ra5 9.Nf3 Nc6 10.a4 0-0 11.Bb5 Bg4-/+.

6.ed4 ed4 7.Nb1 Be7 8.Nf3 Ra5 9.Bc4 0-0 10.0-0 Re8-/+.

6.ed4 ed4 7.Nb1 Be7 8.Nf3 Ra5 9.Bc4 b5 10.Bb3 c5 11.d3 0-0=+.

6.ed4 ed4 7.Nb1 Be7 8.Nf3 Ra5 9.Be2 0-0 10.Bb2 Nc6-/+.

5.Bb2 c5 6.bc5 Bc5 7.Nf3 Nc6 8.Ne5 Ne5 9.d4 Bd6 10.de5 Be5 11.Na4 Bg4=+.

5.Bb2 h6 6.Qf3 e4 7.Qe2 Nc6 8.f3 Bd6 9.fe4 Ne5 10.ed5 0-0 11.Nf3 Bg4 12.h3 Nf3 13.gf3 Bh5 14.d4 Re8 15.0-0-0 c6 16.dc6 bc6 17.Re1 Bf4 18.Nd1 Nd5 19.Kb1 Rb8 20.Qa6 Rb6 21.Qe2 Bg3 22.Nf2 Nf4 23.Qd2 Nd5 24.e4 Bf4 25.Qd3 Bg3 26.Re2 Nf4 27.Qd2 Bf3 28.Re3 Bh1 29.Nh1 Bh4 30.Bc4 Qg5 31.d5 Nh3 32.dc6 Qg1 33.Qc1 Qg2 34.Bd5 Bg5 35.Ng3 Nf2 36.Nf5 Qg4 37.Bg7 Ne4 38.Nh6 Bh6 39.Bh6 Rbb8 40.Be4 Re4 41.Re4 Qe4 42.Qg5 Qg6 43.Qg6 fg6 44.c4 Kh7 45.Bg5 Kg7 46.b5 Kf7 47.Kc2 Ke6 48.Kb3 Kd6 49.Kb4 Ra8 50.a4 Re8 51.a5 Kc7 52.a6 Rb8 53.Bf4 Black resigned 1-0. DaTruth123 (1680) - calchess10, ChessWorld.net, 2013. (=1.a3 e5 2.Nc3 d5 3.e3 Nf6 4.b4 a6)

5.Nge2 Nc6 6.Bb2 Bd6 7.g3 Be6 8.d3 0-0 9.Bg2 Qd7 10.f4 ef4 11.gf4 Bg4 12.Bd5 Be2 13.Qe2 Bf4 14.Bc6 Qc6 15.0-0-0 Rfe8 16.Kb1 Re3 17.Qf2 Qf3 18.Qh4 Qg4 19.Qg4 Ng4 20.Bc1 Rf3 21.Bf4 Rf4 22.Ne4 Re8 23.h3 Nf6 24.Nc5 Rb8 25.Rde1 Kf8 26.h4 Rf5 27.Re2 Rd5 28.Kb2 Nd7 29.c4 Rd4 30.Kc3 Rd6 31.Ne4 Re6 32.Rf2 f6 33.Ng5 h6 34.Ne6 Black resigned 1-0. DaTruth123 (1710) - Achilles24, ChessWorld.net, 2014. (=1.Nc3 e5 2.a3 Nf6 3.b4 d5 4.e3 a6)

5.h3 c6 6.Be2 Be7 7.g4 h6 8.Bb2 Nbd7 9.d3 g5 10.Nf3 Qc7 11.0-0 Nh7 12.Nb1 f6 13.c4 dc4 14.dc4 0-0 15.Nc3 b6 16.Qc2 Kg7 17.Ne4 c5 18.bc5 Nc5 19.a4 Rh8 20.Nc5 Qc5 21.Rfb1 Bb7 22.Qb3 Bd8 23.Ba3 Qc6 24.a5 b5 25.cb5 ab5 26.Qb5 Qb5 27.Rb5 Bf3 28.Bf3 Ra7 29.Bc5 Re8 30.Ba7 Black resigned 1-0. DaTruth123 - handel23 (1660), ChessWorld.net, 2014. (=1.a3 e5 2.Nc3 Nf6 3.b4 d5 4.e3 a6)

6.d3 Bf5 7.Be2 d4 8.Nb1 Bd6 9.0-0 0-0 10.c4 dc3=+.

6.d3 Bf5 7.Be2 Bd6 8.0-0 0-0 9.Bb2 d4 10.Nb1 Re8=+.

6.d3 Bf5 7.Be2 Bd6 8.0-0 0-0 9.Ng5 Bd7 10.Bb2 Qe7=+.

6.d3 Bf5 7.Be2 Bd6 8.0-0 0-0 9.Ng5 Bd7 10.Nf3 e4=+.

6.d3 Bf5 7.Be2 Bd6 8.0-0 0-0 9.Ng5 Bd7 10.Nf3 Qe8 11.Qd2 Rd8=+.

4.Rb3 c5 (4...d4 5.Nb1-/+) 5.b5 (5.bc5 Bc5 6.Nf3 d4=+) 5...a5 (5...Bd6 6.e3-/+) 6.b6 (6.Rb2 d4 7.Na4 Bd6-/+) 6...c4 (better is 6...a4 7.Rb1 Nbd7-/+) 7.Ra3? (better is 7.Rb5-/+) 7...Ba3-+ 8.Ba3 Qb6 9.Nf3 Nc6 10.h4 e4 11.Ng5 h6 12.Bd6 hg5 13.Na4 Qb5 14.hg5 Rh1 15.Nb6 Qb6 16.Bf4 Ng4 17.Bd6 Qf2 0–1. evandebrake – pkennedy, net–chess.com, 2001.

4.e3 d4 5.ed4 ed4 6.Nb5 Bd6 (6...Nc6!? 7.Qe2 Be7-/+) 7.Qe2 (7.Nd4 0-0 8.Bc4=) 7...Qe7 (7...Be7 8.Nf3 Nc6 9.Qd3 Nb4 10.Qc4+=) 8.Kd1 (8.Nd6 cd6 9.Qe7 Ke7+=) 8...Nc6 (better is 8...Be5+=) 9.Qf3?? (better is 9.Nd6 cd6 10.Qe7 Ne7 11.Bb2+=) 9...0-0 (better is 9...Bg4!? 10.Nd6 Qd6 11.Bc4-+) 10.Bd3?? (better is 10.Qe2!? Be5 11.f4-+) 10...Re8 11.Ne2?? Bg4 12.Qf6 Be2 13.Ke1 gf6 14.Be4 Qe4 15.Bb2 Bb5 16.Kd1 Qe2 17.Kc1 Qe1! 18.Re1 Re1 0–1. carosse (1675) – yvesr (1840), net–chess.com, 2005.

4.e3 Bd6 5.h3 0-0 6.b5 c5 7.bc6 Nc6 8.Bb5 d4 9.ed4 ed4 10.Nce2 Qb6 (11.c3 dc3 12.dc3 Qc7-/+) 0–1. Zamoht – NZ cricketer, ChessWorld.net, 2005.

4.e3 Nbd7 5.Nf3 c6 6.Ne2 a5 7.a3 Bd6 8.Ng3 Nf8 9.c4 ab4 10.ab4 h5 11.Qc2 h4 12.Nf5 Bf5 13.Qf5 e4 14.Nd4 Rh5 15.Qh3 N8h7 16.f4 ef3 17.Qf3 Ng5 18.Qd1 Nge4 19.Be2 (19.c5 Bc7 20.Bb2-/+) 19...Rg5-/+ 20.Bf3 dc4 21.Qc2 h3 (better is 21...Re5+=) 22.Be4+/– hg2 23.Rg1 Bh2 24.Rg2 Bg3 25.Ke2 Qe7 (better is 25...Ne4 26.Qe4 Re5 27.Nc6 Re4 28.Nd8 Rd8 29.Rg3 g6+–) 26.Nf5?? (better is 26.Nf3 Rb5 27.Bc6 (27.Rg3?! Qe4 28.Qe4 Ne4+–) 27...bc6 28.Rg3+–) 26...Qe4-+ 27.Qe4 Ne4 28.Kf3 Nd2 29.Bd2? Rf5-+ 30.Ke4 Re5 31.Kd4 Rd5 32.Kc4 Be5 33.Kb3 0-0-0 34.Kc2 Kc7 35.Rf1 R8d7 36.e4 Rd4 37.Re2 f6 38.Rf3 Rc4 39.Kb3 b5 40.Be1 Rd1 41.Bg3 Rb1 42.Ka2 Rbb4 43.Be5 fe5 44.Rf7 Kb6 45.Rf5 0–1. Chaplin,Peter Edward (2070) – White,MJR, Bristol League op, 2004. (=1.Nc3 Nf6 2.Rb1 e5 3.b4 d5 4.e3)

5.a3 d4 6.ed4 ed4 7.Na4 Qd7 8.Nb2 Be7 9.Nd3 0-0 10.Nf3 Re8=+.

5.a3 d4 6.ed4 ed4 7.Na4 Be7 8.Nf3 0-0 9.Be2 b5 10.Nb2 Re8 11.0-0 Nc6=+.

5.a3 d4 6.ed4 ed4 7.Na4 Be7 8.Nf3 0-0 9.Be2 Qd5 10.Bb2 Nc6=+.

5.Nf3 Bd6 6.a3 Nc6 7.b5 ab5 8.Nb5 0-0 9.Nd6 Qd6 10.d4 ed4 11.Nd4 Rd8=+.

5.Nf3 Bd6 6.a3 Nc6 7.b5 ab5 8.Nb5 0-0 9.Nd6 Qd6 10.d4 e4=+.

5.Nf3 Bd6 6.a3 Nc6 7.b5 ab5 8.Nb5 e4 9.Nd6 Qd6 10.Nd4 Nd4=+.

6.Bb2 b5 7.Be2 c6 8.Nf3 a5 9.Na2 Qc7 10.Ra1 0-0 11.d3 Nbd7-/+.

6.Bb2 b5 7.Be2 Nc6 8.d3 0-0 9.Nf3 d4 10.Ne4 Ne4=+.

6.Bb2 b5 7.Nf3 Nc6 8.d3 0-0 9.Be2 d4 10.Ne4 Ne4=+.

7.Nf3 Nc6 8.b5 ab5 9.Nb5 e4 10.Nfd4 Be7 11.Nc6 bc6-/+.

8.Na4 b5 9.Nc5 Bc5 10.bc5 Nc6-/+.

8.Na4 b5 9.ed4 ed4 10.Nc5 Bc5-/+.

8.Na4 b5 9.ed4 ed4 10.Bf3 Re8 11.Kf1 c6-/+.

8.Na4 de3 9.de3 a5 10.b5 Qe7=+.

8.ed4 ed4 9.Na2 a5 10.Bd4 ab4 11.Nb4 Ra3=+.

5.a3 Bd6 6.Nf3 b5 7.a4 a5 8.ba5 b4 9.Ne2 0-0 10.Bb2 Re8 11.c3 Bf5-/+.

5.a3 Bd6 6.Nf3 b5 7.a4 a5 8.ab5 ab4 9.Ne2 e4 10.Nfd4 c5 11.Nb3 Bd7-/+.

5.a3 Bd6 6.Nf3 b5 7.a4 a5 8.ab5 ab4 9.Ne2 e4 10.Nfg1 0-0 11.Bb2 Ra5-/+.

5.a3 Bd6 6.Nf3 b5 7.a4 a5 8.ab5 ab4 9.Ne2 e4 10.Nfg1 Ra5-/+.

5.Nf3 Bd6 6.b5 a6 7.ba6 Na6 8.Be2 b5 9.a4 b4 10.Na2 Qa5-/+.

5.Nf3 Bd6 6.b5 a6 7.bc6 Nc6 8.Be2 b5 9.a4 b4 10.Na2 e4 11.Nd4 Nd4-/+.

5.Nf3 Bd6 6.b5 e4 7.Nd4 c5 8.Nb3 Be6 9.d3 0-0 10.de4 de4=+.

5.Nf3 Bd6 6.Be2 b5 7.a4 a5 8.ba5 b4 9.Na2 Qa5 10.c3 Bf5-/+.

5.ed4 ed4 6.Nce2 a5 7.b5 Bc5 8.Nf3 0-0 9.Bb2 Re8 10.h3 a4 11.Ba1 Bf5 -+.

5.ed4 ed4 6.Nce2 a5 7.b5 Bc5 8.Nf3 0-0 9.Bb2 Re8 10.h3 Bf5 11.d3 Bb4-/+.

5.ed4 ed4 6.Nce2 a5 7.b5 Bc5 8.Nf3 0-0 9.Ne5 Re8 10.Nd3 Bb6 11.a4 Bf5 -+.

5.ed4 ed4 6.Nce2 a5 7.b5 Bc5 8.Nf4 0-0 9.Be2 Bd6 10.Nd3 Be6-/+.

5.ed4 ed4 6.Nce2 d3 7.cd3 Bd6 8.Qa4 Bd7 9.b5 0-0 10.Ba3 Ba3 11.Qa3 Bf5-/+.

5.a3 d4 6.ed4 ed4 7.Na4 Qe7 8.Ne2 Nbd7 9.Bb2 b5 10.Nc5 Nc5 11.bc5 d3=+.

5.a3 d4 6.ed4 ed4 7.Nce2 d3 8.cd3 Bd6 9.Nd4 Ba2 10.Rb2 Bd5-/+.

5.a3 Nbd7 6.Bb2 Be7 7.Nge2 0-0 8.f4 e4 9.Nd4 Bg4 10.Be2 Be2 11.Qe2 Nb6 12.g4 Nc4 13.g5 Ne8 14.h4 Nb2 15.Rb2 c5 16.bc5 Bc5 17.Rb7 Bd4 18.ed4 Nd6 19.Rb4 Nc4 20.Rc4 dc4-/+ 21.Qc4 Rc8 22.Qb3? Qb6?? 23.Qb6+= ab6 24.Kd1 e3 25.Nb5 ed2 26.Kd2 ½–½. Hirschinger,Thomas – Ludy,Klaus, RLPF–chB Hauenstein, 1991.

5.d4 e4 6.Nge2 Bd6 7.Nf4 Bg4 8.f3 ef3 9.gf3 Bf4 10.fg4 Qe7 11.Qf3 Bd6=.

5.Nf3 d4 6.ed4 ed4 7.Nb5 c5 8.Ng5 Ba2 9.Qe2 Be7 10.Ra1 Bd5 11.c4 dc3-/+.

4.e3 0-0 5.Bc4 d5 6.Bb3 c5 7.a3 Ba5 8.Nge2 c4 9.Ba2 d4 10.ed4 ed4 11.Nb5 (11.Nb1 d3 12.cd3 cd3-+ (12...Qd3?! 13.Bf6 gf6 14.Qa4=)) 11...d3 12.cd3 (12.Bc4 de2 13.Be2 Ne4-+) 12...cd3 (12...Qd3?! 13.Bf6 gf6 14.Bb1-/+) 13.Ng3 (13.Ned4 Re8 14.Kf1 a6-+) 13...Qe8 14.Kf1 0–1. brawn – NZ cricketer, ChessWorld.net, 2005.

5.Bc3 Nc6 6.e3 Qe7 7.Bb2 0-0 8.d3 d5 0–1. yannigator (1995) – pierred (2815), net–chess.com, 2011.

5.Bc3 d6 6.e3 0-0 7.Nf3 Ne4 8.Rb1 Nc3 9.dc3 Nd7 10.Bb5.

5.Bc3 d6 6.g3 Ne4 (6...Nc6 7.Nf3 0-0 8.Bg2 Nd5 9.Bb2 Nb6 10.Rb1) 7.Bb4 (7.Bb2!?-/+ Nc6 8.Nf3 0-0 9.Bg2 Re8 10.0-0) 7...a5-+ 8.c3? (better is 8.Bc3-+ Qf6 9.Nf3 Nc6 10.Bg2) 8...0-0 9.d4 (9.Bg2 Nf6-+ (9...ab4?! 10.Be4 ba3 11.Qb1-+)) 9...ab4 10.cb4 Qf6 11.Rc1 Qf2# 0–1. JCarsten (1715) – Erler,Juergen (2190), RSXE – Ostern, 2009.

5.Bc3 d6 6.h3 Nc6 7.Nf3 h6 8.g3 Ne4 9.Bg2 (9.Bb2!?-/+) 9...Nc3-+ 10.dc3 Qf6 11.e4 0-0 12.0-0 a5 13.Qd2 b5 14.Qd3 Ba6-+ 15.Qd5 Ne7 16.Qd2 c6 17.Rfe1 Ng6 18.Kh2 c5 19.h4 Bb7 0–1. Pamella – neilo, ChessWorld.net, 2011.

5.Bc3 Qe7 6.e3 Nc6 7.Bb5 0-0 8.Nf3 Ne4 9.Bb2 d6 10.d3.

4.a3 Bc3 5.dc3 Ne4 6.Qe2 (6.Qd5 Nf6 (6...Nc3?! 7.Qc4=) 7.Qe5 Qe7 8.Qe7 Ke7-/+) 6...d5 7.c4 (7.f3 Nc5 8.Qe5 Ne6-/+) 7...c5 (better 7...c6-+) 8.cd5-/+ Qa5 9.c3?? (better 9.Bd2 Nd2 10.Qd2-/+) 9...Qc3-+ 10.Kd1 Qd4 11.Bd2 (11.Kc2 Bf5 12.Bb2 Ng3 13.Kb3 Qd5 14.Qc4 Qd7 15.hg3 Be6-+) 11...Nf2 (better 11...Nc3 12.Ke1 Ne2 13.Rd1 Ng1 14.Rg1 Qd5 15.Bc1-+) 12.Ke1 Qa1 (better 12...Nh1 13.Rd1 Bg4 14.Nf3 Bf3 15.Qf3 Qh4 16.g3 Qh2 17.Bb5 Kd8 18.Bg5 f6 19.Bh4-+) 13.Kf2 Qd4 14.Be3 Qd5 15.Kg3 (15.Qc2 Nc6 16.Bc4 Qd6-+) 15...Qe4 (15...Be6 16.Qc2 c4 17.Be2-+) 16.h3 Qg6 (16...b6 17.Qf3 Qg6 18.Kh2-+) 17.Kh2 h5 (17...b6 18.Bf4 e4 19.Nf3-+) 18.Nf3 (18.Bc5 Nd7 19.Bf2 0-0-+) 18...Nc6 (18...Nd7 19.Qc4-+) 19.Nh4 (19.Bc5 e4 20.Nd2 f5-+) 19...Qd6 20.Nf5 (20.Qf2 Nd4 21.Qg3-+) 20...Bf5 21.g3 (21.Qf2 Nd4-+) 21...h4 22.Bg2 (22.g4 e4 23.Kg1 Be6-+) 22...hg3 23.Kg1 (23.Kg3 Nd4 24.Bd4 e4 25.Kf2 Qd4 26.Qe3 Rd8-+) 23...Nd4 24.h4 Ne2 25.Kf1 Qd1 0-1. silkcut – MARYMARY, ChessWorld.net, 2014.

4.Bc4 Bc3 5.dc3 0-0 (5...Ne4?! 6.Qd5 Nd6 7.Qe5 Qe7 8.Qe7 Ke7 9.Ba3=+) 6.Ba3 (6.Qf3 d6-/+) 6...d6-+ 7.Nf3 (7.Qd3-+) 7...Ne4 8.Qd5 (8.0-0 Bg4-+) 8...Nf6 9.0-0 (9.Qd2-+) 9...Nd5 10.Bd5 Nd7 11.Rae1 Nb6 12.Bb3 a5 13.Ne5 de5 14.Re5 (14.Bf8 Kf8 15.a4 Qg5-+) 14...Re8 15.Rc5 a4 16.Bd5 Nd5 17.Rd1 Qe7 18.Rcd5 Qe1! 19.Re1 (19.Re1 Re1) Re1# 0–1. JCarsten (1715) – Kahl,Karl_Heinz (2195), RSXE – Ostern, 2009.

4.Nd5 Nd5 5.ed5 0-0 6.c3 Bc5 7.c4? (better is 7.Nf3 e4 8.d4-/+) 7...Bf2!-+ 8.Kf2 Qh4 9.g3 Qd4 10.Kg2 Qa1 11.Qc2 Na6 12.Bb2 Qa2 13.Nf3 Nc5 14.Ne5 (14.Be2 d6-+) 14...d6 (better is 14...Na4!? 15.Nd3 b5 16.Be2 Qc4 17.Rc1-+) 15.Nf3 Qb3 16.Qc3 Qc3 17.dc3 (17.Bc3 a5 18.d4 Ne4-+) 17...Bf5 18.Nd4 (18.Rg1 Rfe8-+) 18...Be4 19.Kg1 (19.Nf3 g5 20.Be2 g4-+) 19...Bh1 20.Kh1 Rfe8 21.Nb5 (21.Ba3 a5-+) 21...Re1 22.Kg2 a6 23.Nc7 (23.Nd4 Rae8-+) 23...Rc8 24.Na6 ba6 25.Kf2 (25.Ba3 Ra1 26.Bc5 Rc5-+) 25...Rd1 26.Be2 Rd2 27.Ba3 Re8 28.Bc1 Rde2 29.Kf1 (29.Kf3 Nd3 30.c5 h5 31.g4 Ne1 32.Kg3 Rg2 33.Kh4 Nf3 34.Kh3 Rg4 35.Be3 Re3 36.cd6 Ne5) 29...Nd3 30.g4 (30.Kg1 Rf2 31.Be3 Re3 32.c5 Re1) 30...Rf2 31.Kg1 Re1 0–1. lady – _chess_ (1935), gameknot.com, 2011.

4.d4 e4=+ 5.Ng5 Be7 (5...d5 6.a3-/+) 6.Bf4 (6.Nge4 Ne4 7.Ne4 d5+=) 6...h6 (better is 6...d5 7.a3 Nh5-/+) 7.Nf7?? (better is 7.Nge4 g5 8.Bc1+=) 7...Kf7-+ 8.Ne4? (8.d5-+) 8...Ne4 9.Qd3 Bf5 10.Qc4 Be6 11.d5 Bf5 12.0-0-0 Nf2 13.e4 Bg4 14.Qd4 Nh1 15.Bd3 Bd1 16.Kd1 Bf6 17.e5 de5 18.Be5 Be5 19.Qe5 Re8 20.Qh5 Kg8 21.Qg6 Qd5 22.c4 Nf2-+ 23.Kc2 Qd4 24.Qe8# 1–0. interloper – allknight, ChessWorld.net, 2011.

4.e4= d5 5.ed5 Bb4 6.Bb5 c6 7.dc6 bc6 8.Be2=+.

4.e4= Be6 5.d4 (5.Ng5 Be7=) 5...Be7 (5...d5 A) < 6.Ne5 Bb4 (6...de4?! 7.a3=; 6...Ne4?! 7.Ne4 de4 8.c3=) 7.Bd2 de4-/+; B) 6.a3 de4 7.Ne5=) 6.d5 (6.de5 de5 7.Qd8 Kd8+=) 6...Bg4 7.Be2 Bf3 (7...Nbd7 8.0-0+=) 8.Bf3 0-0 9.0-0 c6 (9...Nfd7 10.Bg4+=) 10.dc6 (10.Be3 Qd7+=) 10...Nc6 11.Be3 (11.Rb1 Qc7+=) 11...Qd7 (better is 11...Nb4 12.Qb1 d5 13.ed5 A) 13...Nbd5? 14.Nd5 e4 15.Ne7 Qe7 16.Be2+–; B) 13...Nfd5?? 14.Nd5 Nd5 15.Rd1+– (15.Qb7?! Ne3 16.fe3 Qd6+=); C) 13...Rc8+=) 12.Bg4?? (better is 12.a3+/–) 12...Ng4-+ 13.Bh6 Nh6 14.Nd5 f5 15.ef5 Nf5 16.Qg4 Bf6 17.Nf6 Rf6 18.Rad1 Rg6 19.Qc4 Kh8 20.a4 Nfd4 21.Rde1 Qg4 22.g3 Nf3 23.Kg2 Ne1 24.Re1 Rf8 25.f4 Rf4 26.Qe2 Qe2 27.Re2 Rb4 28.Rf2 Rf6 29.Rf6 gf6 30.h4 Ra4 31.Kf3 f5 32.g4 Rg4 33.h5 Kg7 34.h6 Kh6 35.c4 Rc4 36.Kg3 Kh5 37.Kf3 Rc3 38.Kf2 d5 39.Ke2 Kg4 40.Kd2 d4 41.Ke2 e4 42.Kf2 Rc2 43.Ke1 Kf3 44.Kf1 Rc1# 0–1. interloper – THIRTYSECONDSTO MARS, ChessWorld.net, 2011.

3.a3 a6 4.Bb2 Be7 5.Nf3 0-0 6.e4 d6 7.Bc4 b5 8.Bb3 Bb7 9.d3 Nbd7 10.0-0= c5 11.Qe2 Qc7 12.Rfe1 Ng4 13.Nd2 Nge5 14.Nd1 Nc6=+ 15.Qg4 Nce5 16.Qg3 Bf6 17.f4 Ng6=+ 18.Bf6 Nf6 19.f5 ef5 20.ef5 Ne5 21.Ne3 Rae8 22.Re2 c4 23.dc4= Nc4 24.Ndc4 bc4=+ 25.Bc4 Ne4 26.Qe1 Qb6 27.Kf1 Re5= 28.Bd3 Nc3? 29.Qc3+– Re3 30.Re3 Qe3+/– 31.Re1 Qf4 32.Kg1 h6 33.Rf1 Qg4 34.Qd2 Rd8 35.f6 Qd4 36.Qf2 Qf6 37.Qb6 Rd7?? 38.Rf6+– gf6 39.Ba6 (39...Ba6 40.Qa6+–; 39.Bf5 Be4 40.Bd7 Bc2 41.Qa6 Be4+–) 1–0. CHED – kostovist, internet, 2006.

3.a3 b5 4.Nb5+= a6 5.Nd4 g6 (5...d5 6.Ngf3+=) 6.Bb2+/– Bg7 7.f3 e5 8.Nb3 d5 (8...d6 9.e4+/–) 9.e3 (9.Be5 0-0+/–) 9...0-0 (9...Nbd7!?+/–) 10.Be5 Nc6 11.Bf6 Bf6 12.c3 g5 (12...Re8 13.Be2+/–) 13.g3 Bf5 14.g4 Bg6 15.Nc5 a5 16.Bb5 Ne7 (better is 16...Na7 17.Ba6 Re8+–) 17.Nd7 Be5 (17...c6 18.Nf6 Kg7 19.Nh7 Bh7+–) 18.Ne5 f6 (18...Qd6 19.d4+–) 19.Ng6 Ng6 20.Ne2 ab4 21.cb4 Nh4 22.Nd4 Qe7 23.Nf5 (23.Bc6 Rad8+–) 23...Nf5 24.gf5 Qd6 25.d4 (better is 25.Qc1 Rfb8 26.Bc6 Ra6+–) 25...c6 (25...Ra3 26.Ra3 Qb4 27.Kf2 Qa3 28.Qc2+–) 26.Bd3 Rfe8 (26...Ra3 27.Rb1+–) 27.Ke2 (27.Kd2 Re7 28.h4 Rea7+–) 27...Ra7 28.h4 (28.Qc1 Qf4 29.e4 de4 30.Be4 Qf5 31.Qc6 Rae7+–) 28...h6 (28...Qf4 29.Qd2 g4 30.fg4+–) 29.hg5 hg5 30.Rh6 Rh7 31.Rg6 (better is 31.Qh1! Ree7+–) 31...Kf8 (31...Kf7 32.Qg1 Qh2 33.Qf2 Re3 34.Ke3 Qf4 35.Ke2+–) 32.Kd2 (32.Qg1 Rh2 33.Kd1 Re3 34.Qe3 Rh1 35.Kc2 Ra1+–) 32...Ra8 (32...Re3 33.Rf6! (33.Ke3?! Qf4 34.Kf2 Rh2 35.Kf1 Rh1 36.Ke2 Qh2 37.Ke3 Qf4 38.Ke2 Qh2 39.Ke3 Qf4 40.Ke2=) 33...Qf6 34.Ke3 Re7 35.Kd2 Qd4 36.Kc2+–) 33.Qf1 Raa7 (33...Ke7 34.f4 gf4 35.Qf4 Qf4 36.ef4+–) 34.f4 gf4 (34...Rh2 35.Be2 gf4 36.Qf4 Qf4 37.Rf6 Rf7 38.Rf7 (38.ef4?! Rf6 39.Ke3 Rf5+=) 38...Kf7 39.ef4+–) 35.Qf4 Qf4 36.ef4 (36.Rf6!? Rhf7 37.Rf7 Kf7 38.ef4 Ra4+–) 36...Rh2 37.Kc3 Kf7 38.b5 (38.a4 Re7+–) 38...cb5 39.Bb5 Rh3 (39...Re7 40.Rag1 Rh7 41.Kb4+–) 40.Kb4 Kf8 (40...Rc7 41.Rag1 Rh7 42.Rg8+–) 41.Rf6 Ke7 42.Re6 Kf7 43.Rg1 (better is 43.Rd6!? Rf3+–) 43...Raa3 44.Be8 Kf8 45.f6 (45.Bc6 Rhd3+–) 45...Rhc3 (45...Rac3 46.f7 Rc4 47.Kb5 Rb3 48.Ka6 Ra4 49.Ba4 Kf7 50.Bb3 Ke6 51.Rg5+–) 46.Ba4 (46.Rb1 Rh3 47.Bg6 Ra8+–) 46...Re3 47.f5 Rg3 (47...Rf3 48.Ra6 Rg3 49.Rg3 Rg3 50.Bc6+–) 48.Rh1 Rh3 49.Rh3 Rh3 50.Rd6 (better is 50.Be8 Rh7 51.Bg6 Rf7+–) 50...Rh6 (50...Rd3 51.Kc5+–) 51.Bb3 Rh4 52.Bd5 Rd4 53.Kc5 1–0. kirklandlake – Sirprocyon, ChessWorld.net, 2015.

3.a3 c5 4.bc5= Bc5 5.e3 (5.e4 d5 6.d4 Qa5=) 5...0-0 (5...d5 6.Nf3=) 6.Nf3 (6.d4 Be7=) 6...d5 7.Be2 (7.d4 Bd6=) 7...Nc6 (7...Ne4 8.Bb2=+) 8.0-0= Bd7 (8...Bd6 9.Nb5=) 9.Rb1 Rb8 10.d4 Be7 (10...Bb6 11.Qd3=) 11.Ne5 (11.Qd3 Qc7=) 11...Ne5 (11...a6 12.Qd3=) 12.de5 Ne4 (12...Ne8 13.e4 Qc7 14.Bb2=) 13.Ne4+= de4 14.Qd4 Bc6 15.Qa7 Ra8 16.Qd4 Ba3 17.Bb5 Bc1 18.Rfc1+= Qd4 19.ed4 Rfd8 20.Bc6 bc6 21.c3 Ra5 22.Re1 c5 23.Re4+/– cd4 24.Rd4 Rc8 25.Rc4! Raa8 26.Rc8 Rc8 27.Rd1 g6 28.Rd3 Kf8 29.Kf1 Ke7 30.Ke2 f5 31.ef6! Kf6 32.Kd2 Kf5 33.Rd7+– h5 34.Kd3 e5 35.c4 h4 36.h3 Rc5 37.Rd5 Rc8 38.c5+– g5 39.Kc4 Ke4 40.Rd7 Rf8 41.f3 Kf4 42.c6 Kg3 43.Rd2 Rc8 44.Kc5 1–0. gtate (2625) – grotesmurf (2320), net–chess.com, 2008.

3.a3 g6 4.Nf3= Bg7 5.Bb2 0-0 6.e3 d5 7.Be2 b6 8.0-0 Bb7 9.Ne5 c5 (9...Nc6 10.f4=) 10.bc5 bc5 11.Rb1 Qc7 (11...Nbd7 12.Na4 Qc7 13.f4=) 12.f4+= a6 13.Na4 Nc6 (better is 13...Nbd7!?+=) 14.Nc5+/– Ne5 15.fe5 Nd7 16.Nb7 Qb7 17.d4 Qc7 18.Bd3 Nb6 19.Qe2 Na4 20.Ba1 a5 21.Bb5 Nc3 22.Bc3 Qc3 23.Rb3 Qc7 24.c4 dc4 25.Rc1 Qa7 26.Qc4 Bh6 27.a4 Qe7 28.Qc3 Rfd8 29.Qc2 Qg5 30.Rc3 Qh4 31.g3 Qg4 32.Kg2 1–0. pierre – nidett, internet Microsoft, 2012.

3.b5 a6 4.e3 (4.e4 e5=) 4...ab5 (4...d5 5.Bb2=+) 5.Bb5 c6 6.Bd3 d5 7.Nf3 Nbd7 (7...Bd6 8.e4 de4 9.Ne4 Ne4 10.Be4=+) 8.0-0 e5 9.Be2 Bd6 10.Bb2 0-0 11.h3 Bc7 (11...b5 12.a4 b4 13.Nb1-/+) 12.a4=+ e4 13.Nd4 Ne5 14.Ba3 (14.d3 Qe7=+) 14...Re8 15.d3 ed3 16.cd3 Bb8 (16...Bb6 17.Re1=+) 17.Qc2 Qc7 18.f4 Ng6 19.Qc1 (19.Nd1!?=+) 19...Ba7 (better is 19...Qb6!? 20.Rb1 Qa7-/+) 20.Ncb5= (20.Ncb5 Qa5 21.Na7 Ra7 22.Bc5=). iii – ooo, internet, 2009.

3.b5 d5 4.Nf3=+.

3.e4 Bb4 4.Bb2 d6 5.Qe2 (5.a3 Bc3 6.Bc3 e5-/+) 5...Nc6 6.Nb5 (6.Nf3 e5-/+) 6...Ba5 (6...e5 7.c3 Bc5 8.Nf3-+) 7.h3 (7.Rb1 e5-/+) 7...a6 (7...e5 8.Nf3-+) 8.Na3 0-0 (8...e5 9.Nc4-+) 9.c3 (9.Nc4 e5-/+) 9...b5-+ 10.Nf3 Bb7 0–1. gurvinder372 – divergence (1740), internet, 2007.

4.ba5 d5 5.Bb2 e5 6.e3 Ra5 7.Nf3 Nbd7 8.Bb5 c6 9.Be2 b5 10.0-0 Bd6-/+.

4.Rb1 ab4 5.ab4 d5 6.d4 Bd6 7.Nb5 Be7 8.Nf3 Na6 9.c3 0-0 10.Qd3 Ne4=+.

4.b5 d5 5.Nf3 Bd6 6.d3 e5 7.Bg5 c6 8.e3 Qe7 9.Qc1 h6 10.Bh4 g5=+.

4.Bb2 a5 5.b5 e5 6.e3 Bc5 7.d4 ed4 8.Na4 Bd6 9.Bd4 Qe7 10.Nf3 Nbd7=.

4.d4 b6 5.Nf3 Bb7 6.h3 Nbd7 7.Bf4 c5 (7...Bd6!? 8.Bd6 cd6=) 8.dc5 bc5 9.Rb1 (9.Nb5 e5 10.Ne5+/–) 9...cb4 10.ab4 Qc7?? (better is 10...Rc8 11.Na2 Ba6=+) 11.Bc7+– Nb6 (11...Rc8 12.Nb5 a6 13.Nd6 Bd6 14.Bd6+–) 12.Bb6 ab6 13.e3 Rc8 14.Bb5 Bc6 15.Bc6 Rc6 16.Na4 Ne4 17.0-0 b5 18.Nd2 ba4 19.Ne4 de4 20.b5 Rd6 21.Qe2 Be7 22.Rfd1 0-0 23.Rd6 Bd6 24.b6 a3 25.Qa6 1–0. Hanzlik,J – Kopp,Lubomir (1610), Klatovy op–B, 2005.

4.e3 Bd7 5.Nf3 a6 6.d4 Bd6 7.Bd3 Qe7 8.e4 c6 9.e5 Bc7 10.Bg5 h6 11.ef6 gf6 12.Bh4 e5 13.de5 Be5 14.Ne5 Qe5 15.Ne2 Rg8 16.0-0 Be6 17.Qd2 h5 18.Rae1 Nd7 19.f4 Qd6 20.f5 Rg4 21.fe6 Rh4 22.ed7 Kd7 23.Nf4 Rg8 24.Qf2 Rgg4 25.Bf5 Kc7 26.Bg4 Rg4 27.Nh5 Rg5 28.Nf6 Kc8 29.Qf4 1–0. Vinagre,J – Dolezalova,M, OCC–2002–05, 2002.

4.e3 Be7 5.Nf3 0-0 6.Be2 a5 7.b5 Bd6 8.d4 Nbd7 9.0-0 c5 10.dc5 Nc5=+.

4.Nf3 a5 5.b5 Bd6 6.d3 e5 7.Bg5 Be6 8.e4 d4 9.Nd5 Bd5 10.ed5 Nbd7-/+.

4.d4 a5 5.ba5 Ra5 6.e3 Nc6 7.Bd2 Bd6 8.Rb2 Ba3 9.Rb3 Ra8 10.Nf3 0-0=+.

4.Nf3 d4 5.Na4 e5 6.c3 Qd5 7.cd4 ed4 8.Bb2 Bf5 9.Rc1 Bb4 10.Nd4 Ne4=.

4.a3 Bc3 5.dc3 a6=+.

4.a4 Bc3 5.dc3 c5 6.c4 0-0 7.Bg5 Qa5 8.Bd2 Qc7 9.f3 d5 10.Nh3 dc4-/+ 11.e4 e5 12.Bc4 Bh3 13.gh3 a5 14.0-0 Nbd7 15.Bg5 b6 16.Qe1=+ h6 17.Bh4 Nh5 18.Qf2 Nf4 19.Qg3 Qd6 20.Rad1= Qc7 21.Rd2 Rad8? 22.Bd8+– Qd8?? 23.Rfd1 Nh5 24.Rd7 Qd7 25.Rd7 Ng3 26.hg3 (26...Kh7 27.Bf7+–) 1–0. Doeh,Cole Adam – Marsh,Alan, IECG 7PSRR, 1995.

4.Nf3 c6 (4...d5 5.e3=+) 5.a4 (5.Bb2 0-0=) 5...Bc3=+ 6.dc3 Qa5 7.Bb2 (7.e3!?=) 7...cb5-/+ 8.ab5 (8.Nd2 d5-/+) 8...Qb5 9.Ba3 Nc6 (9...d5 10.e3 Qa5 11.Bb2-/+) 10.e3 Qa5 (10...Qb6 11.Bd6-/+) 11.Bb4 Qb6 12.Bd6 Ne4 13.Ra3 Nd6 (13...Qd8 14.c4-/+) 14.Qd6 Qb2 (14...Qd8 15.c4-/+) 15.Kd2=+ Qb1 (15...a5 16.Bd3=+) 16.Nd4 Nd4 (16...f6 17.Rb3 Qa2 18.Ra3=) 17.cd4= b6 (better is 17...a6=) 18.g3 Bb7 19.Bg2 Qh1 20.Bh1 Bh1 21.Ra7 Ra7 22.Qb8 Ke7 23.Qa7 Rc8 24.Qb6 Be4 (24...Rc4 25.Qa7+–) 25.Qb4 Kf6 (25...d6 26.c4+–) 26.c4 Ra8 27.Qd6 Ra2 28.Kc3 Bc6 (28...Kg6 29.Qf4 f5 30.g4+–) 29.d5 Ba4 30.Kb4 g6 31.c5 1–0. pier_e – ss_26, internet, 2009.

3.Ba3 e5 4.d4 Nc6 5.de5 Ne5 6.e4=.

3.Ba3 Bg7 4.g3 (better is 4.e4=) 4...Ne4?? (better is 4...0-0+=) 5.Rb1?? (better is 5.Ne4 Ba1 6.Qa1+–) 5...Nc3-+ 6.Qc1 Nb1 7.Qb1 Nc6 8.b5 Ne5 9.Qb2 Nf3! 10.ef3 Bb2 11.Bb2 d6 12.Bh8 e5 13.Ne2 Bd7 14.h3 f6 15.Nc3 Kf7 16.Bc4 Ke7 17.Nd5-/+ Kf8 18.h4 c6 19.Nf6 d5 20.Bd3 Bf5 21.Be2 Kf7 22.Nh7 Qh8 23.Ng5 Ke7 24.c4 dc4 25.Bc4 cb5 26.Bb5 a6 27.Bc4 e4! 28.Ne6 Qa1 29.Ke2 Qh1 30.Nc7 ef3 31.Ke3 (31.Ke3 Qe1 32.Be2 Qe2 33.Kd4 Qd2 34.Kc4 Qa2 35.Kc3 Rc8 36.Kd4 Qf2 37.Kc4 Rc7 38.Kb3 Qb6 39.Ka4 Bc2 40.Ka3 Qb3) -+. maronhalt – gzorro, net–chess.com, 2006.

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nc3).

3.d3 Bg7 4.g3? (4.d4 d5+=) 4...0-0 (4...Ne4 5.Ne4 Ba1 6.Bh6-/+) 5.Ba3 Nc6 6.Rb1 Ng4 7.Bh3?? Nce5 8.f4 Nf2?? 9.Kf2+– Nc6 10.Nf3?? Bc3= 11.b5 Nd4 12.Ne1 c6 13.bc6+= Nc6 14.Rb3 Bd4 15.e3= Bf6 16.Nf3 d5 17.Bf1 d4+= 18.ed4 Bd4 19.Ke2 Bg4 20.Ke1?? Qd5 21.c4?? Qh5 22.Rb5?? Bc3 23.Ke2?? Nd4 24.Kf2 Bf3 25.Qc1 Bh1 26.Rh5+/– gh5 27.Qc3+– Nf5 28.Qe5 e6?? 29.Be2 Rfd8 30.Bh5 Rd3 31.Bc5 Rad8 32.Qf6 Rd2? 33.Ke1 Rh2?? 34.Bf7 1–0. bsjostedt – cuzinitt (1860), net–chess.com, 2003.

3.e4 d6 4.d4 Bg7 5.Nf3 0-0 6.Be2 Nbd7 7.0-0 c6 8.Bg5 Qb6 9.e5 de5 10.de5 Ng4 11.Be7 Re8 12.Na4 Qc7 13.Bd6 Qd8 14.Qd2 Nge5 15.Rad1 Nf3 16.Bf3 Ne5 17.Be2 Be6 18.Nc5 Nc4 19.Bc4 Bc4 20.Rfe1 Ba2 21.Re8 Qe8 22.Re1 Qc8 23.Re7 b6 24.Ne4 Bd5 25.Qe3 Qf5 26.Re8 1–0. van Rijsbergen – Burgin, email CTON 1996.

3.e4 Bg7 4.e5 Ng8 5.d4 d6 6.Nf3 Bf5 7.Bb5 c6 8.Bd3 de5 9.de5 Bd3 10.cd3+= Nd7 11.d4 e6 12.Ne4 Ne7? 13.Nd6+– Kf8 14.Ng5 Nf5 15.Ngf7 Qb6 16.Nh8 Nd6 17.ed6 Bh8 18.Bh6 Ke8 19.Qb3 Qd4?? 20.Qe6 Kd8 21.Qe7 Kc8 22.Qe8# 1–0. pierre – wiola, internet, 2010.

3.h3 Bg7 4.d4 0-0 5.Nf3 d5 6.a4 c6 7.a5 e6 (7...Qd6 8.Rb1+=) 8.Bg5 (8.e3 Qe7=) 8...Nbd7 9.e3 h6 10.Bh4 Qc7 (10...Qe7 11.b5=) 11.g4 (11.Bg3 e5+=) 11...b6 12.ab6 Qb6 13.g5 (better is 13.Ra4!?=) 13...hg5 14.Bg5 Qb4 15.Qd2 Qd6 16.Ba6 (16.Bf4 Qe7+=) 16...Nb6 (16...e5 17.Ne5 Ne5 18.de5 Qe5 19.Bf4-/+) 17.Ne5 Ba6 18.Ra6 Rfb8 (18...Nfd7 19.f4-/+) 19.f4 (19.Bf4 Qf8+=) 19...Ne4 20.Ne4 de4 21.c4 Qc7 22.c5 Qb7 23.Ra1 Nd5 24.0-0 (better is 24.Rg1-/+) 24...Be5?? (better is 24...f6 25.Bf6 Bf6-+ (25...Nf6?! 26.Qg2-/+)) 25.fe5= Qb2 26.Qb2 (26.Qe1 Qc2=) 26...Rb2+= 27.Rf2 Rf2 28.Kf2 a5 29.Bh4 (29.Ra4 Kf8+=) 29...a4-/+ 30.Bg3 (better is 30.Ra3!?-/+) 30...a3-+ 31.Ke2 a2 32.Be1 Ra3 33.Bf2?? (better is 33.Bd2-+) 33...Nb4 34.Kd2 Kh7 (better is 34...Rb3 35.Kc1 Nd3 36.Kd2 Rb2 37.Kc3 Rf2 38.Kb3-+) 35.Bg1 Rb3 36.Kc1 Kh6 37.Bf2 (37.h4 Nd3 38.Kd2 Rb2 39.Kc3 Kh5-+) 37...Nd3 38.Kc2 Rb2 39.Kc3 Rf2 40.Kb3 Rb2 41.Ka3 Kh5 42.Ra2 Ra2 43.Ka2 Nb4 (better is 43...Ne5 44.Kb3 Kh4 45.Kc3-+) 44.Kb3 Nd5 45.Ka4 Ne3 46.Ka5 (46.Kb3-+) 46...Nd5 47.Ka6 e3 48.Kb7 Nb4 49.Kc7 e2 50.Kd7 g5 51.Ke7 Kg6 52.Kf8 e1Q 53.Kg8 (53.h4 gh4 54.Ke7 Nd5 55.Kd7 Qa5 56.Kc6 Qa6 57.Kd7 Qb7 58.Kd8 Qc7 59.Ke8 Qc8) 53...Nd5 54.h4 (54.Kf8 Qa5 55.Ke8 Qc7 56.h4 Qe7) 54...gh4 (54...Qh4 55.Kf8 Qh8) 55.Kf8 Qa5 56.Kg8 (56.Ke8 Qc7 57.Kf8 Qd8) 56...Qa8 (56...Qd8) 0–1. valerypavlovich (2210) – croach (2265), net–chess.com, 2016.

3.a3 e6 4.d4 Bb7 5.Nf3 Be7 6.Nc3 d5 7.cd5 ed5 8.e3 0-0 9.Bd3 c5 (9...a5 10.b5=) 10.bc5+= bc5 11.Rb1 Ba6 12.dc5 (12.Rb8 Rb8 13.Ba6 Ne4+/-) 12...Bd3 13.Qd3 Bc5 14.0-0 Nc6 15.Bb2 Rb8 16.Rfd1 Ne7 (16...Re8!?+=) 17.Na4+/- Bd6 18.Bf6 gf6 19.Nc3 Rb1 20.Rb1 Ba3 21.Nd5 Qd5 22.Qa3 Nc6 23.h3 Rd8 24.Qa4 f5 25.Rc1 Rd6 26.Qf4 Rg6 (26...Qe6 27.Nh4+/-) 27.Nh4+- Rg7? (27...Qd2 28.Rc4 Rd6 29.Qg3 (< 29.Nf5 Qd1 30.Kh2 Re6 31.Rc6 h5+-; 29.Qf5?! h6+-) 29...Kh8 30.Nf5+-) 28.e4! fe4 (28...Qe4 29.Qb8) 29.Rc6! Qc6?? (better is 29...Rg2 30.Ng2 Qc6 31.Qb8 Kg7 32.Qa7 Qd6+-) 30.Qb8 1-0. marekt - dannyboy238, ChessWorld.net, 2004.

3.a4 Bb7 4.f3 a5 5.b5 e6 6.Ba3 Ba3 7.Ra3 0-0 8.d4 d5 9.c5 bc5 10.dc5 e5 11.e3 Bc8 12.Bd3 Be6 13.Rc3 d4 14.ed4 Qd4 15.Ne2 Qb4 16.0-0 Nbd7 17.Qc2 Rad8 18.Nd2 (18.Rc1 Qh4 19.Be4 Ne4 20.Qe4 Qe4 21.fe4 Nf6=) 18...g6 (better 18...Nc5 19.Rc5 Rd3 20.Qd3 Qc5 21.Kh1 Qb4-/+) 19.Rb1 Qh4 20.g3 (20.Be4 Ne4 21.fe4 f5=) 20...Qh3 21.Ne4 (21.Be4 Qh6 22.Rd1 Ne4 23.Ne4 f5=) 21...Ne4 (21...Nd5 22.Nf2 A) 22...Nc3? 23.Nh3 Nb1 24.Nf2+- (24.Qb1?! Bh3 25.Qc2 Nc5 26.Qc5 Rd3=); B) 22...Qh5-/+) 22.Be4+= f5 23.Bc6 Nf6 24.Rd1 e4?? (24...Rd1!? 25.Qd1 Qh6+/-) 25.Rd8 (better 25.Nf4 Rd1 26.Qd1+-) 25...Rd8 26.Nf4 (26.fe4?? Ng4 27.Rf3 Qh2 28.Kf1 Qh1 29.Ng1 Qf3 30.Nf3 Ne3 31.Ke2 Nc2-+) 26...Qh6 27.Ne6?? (27.fe4 fe4 28.Be4 (28.Ne6?? Rd2 29.h3 Rc2 30.Rc2 Qh3-+) 28...Ne4 29.Qe4 (29.Ne6? Rd2 30.Qd2 Qd2-+) 29...Rd1 30.Kg2 Rd2 31.Kf3+/-) 27...Rd2-+ 28.Qd2 (28.h3 Rc2 29.Rc2 Qe3 30.Kh2 ef3 31.b6 cb6 32.cb6 Qb6 33.Nf4-+) 28...Qd2 29.Rc4 (29.b6 cb6 30.cb6 e3-+) 29...Qd1 (29...e3 30.Rc1 Qc1 31.Kg2 e2 32.Kh3 e1Q 33.Nf4 Qf4 34.gf4 Nh5 35.Bd5 Kg7 36.b6 Nf4) 30.Kf2 Qf3 31.Kg1 (31.Ke1 Qe3 32.Kd1 Qd3 33.Ke1 Qc4 34.Ng5 Qc1 35.Ke2 Qc2 36.Ke1-+) 31...Qd1 (31...Ng4 32.Rc2 Qd1 33.Kg2 Qc2 34.Kg1 Qh2 35.Kf1 Qf2) 32.Kf2 Ng4 33.Kg2 Qe2 34.Kh3 (34.Kg1 Qh2 35.Kf1 Qf2) 34...Qc4 (34...Qh2) 35.Nc7 Qc5 (35...Qe2 36.Bd5 Kh8 37.Kh4 Qh2 38.Kg5 Qh6) 36.Ne6 (36.Ne8 Qf2 37.Nf6 Kf8 38.Ng4 fg4 39.Kh4 Qf5 40.Be4 Qh5) 36...Qf2 37.Kh4 h6 (37...Qh2 38.Kg5 Qh6) 38.h3 Qh2 (38...Ne5 39.Ng5 hg5 40.Kg5 Kg7 41.Be4 Qg3) 39.Nf4 (39.Bd5 Ne5 40.Nc5 Kh8 41.Be4 g5 42.Kh5 Qh3) 39...Kg7 (39...g5 40.Kh5 Kh7 41.Be4 Nf6) 40.b6 (40.Ne6 Kf6 41.Nf4 g5 42.Kh5 Qg3 43.Nd5 Kg7 44.hg4 Qg4) 40...Kf6 (40...g5 41.Kh5 Nf6) 41.Ng6 (41.Ba8 g5 42.Kh5 Qg3 43.Nd5 Kg7 44.hg4 Qg4) 41...Kg6 42.b7 (42.Bb5 Qd2 43.Be8 Kf6 44.hg4 Qh2) 42...Nf2 43.Be8 Kf6 44.Kh5 (44.b8Q Qh3) 44…Qh3 0-1. DanyilMiroshnyk (2330) - miskob (2305), Rated blitz game, lichess.org, 2021. (=1.c4 A15: English Opening: 1...Nf6 1...Nf6 2.b4)

3.Bb2 Bb7 4.Nf3 e6 5.a3 Bf3 6.ef3 c5 7.Qb3 Be7 8.Be2 0-0 9.Nc3 Nc6 10.b5 Nd4 11.Qd1 d5 12.0-0 Ne2 13.Qe2 dc4 14.Qc4 Qd2 15.Na4 Nd5 16.Rad1 Qg5 17.Bc1 Qg6 18.Nc3 Nc3 19.Qc3 Bf6 20.Qc4 Rad8 21.Qe2 Qf5 22.g4 Qg6 23.Kh1 Bd4 24.h4 f5 25.Bg5 Rde8 26.Qd2 h6 27.Bf4 fg4 28.Rg1 h5 29.Be3 Rf3 30.Kg2 Qe4 31.Kh2 g3! 32.fg3 Be3 (33.Rge1 Rg3 34.Kg3 Qg4 (34...Bd2?! 35.Re4 Rd8 36.Rf1-/+) 35.Kh2 Bd2 36.Rd2 Qh4 37.Kg2 Qe1-+) 0–1. dannyboy238 – Freyser, ChessWorld.net, 2004.

3.b5 e5 4.Bb2= e4 5.Nc3 c6 (5...a6 6.Qc2 Bb7 7.Nh3=+) 6.a4 (6.Qc2 Qe7=) 6...d5=+ 7.e3 cb5 (7...a6!?=) 8.ab5+= Bb4 (8...dc4 9.Bc4 Bb7 10.Qb3+=) 9.cd5 Nd5 (9...Bb7 10.Ra4 Bc3 11.dc3+-) 10.Ne4 (10.Qa4 Bc3 11.Qe4 Qe7 12.Qe7 Ke7 13.dc3 a5+-) 10...0-0 11.Bc4 Be6 12.Qf3 (12.Qb3 Re8 13.Nf3 Be7+-) 12...Nd7 (12...Ne3 13.Be6 (worse 13.Qe3 Bc4 14.Ra4 a5-/+) 13...Nc2 14.Kd1 fe6 15.Qg4+-) 13.Qg3 Threatening mate: Qxg7 13...N5f6 14.Nf6?? (better 14.Be6 fe6 15.Nf3+-) 14...Nf6-+ 15.Bc3 (15.Nf3 Bc4 16.Bd4-+) 15...Bc3 16.dc3 Bc4 (better 16...Ne4 17.Rd1 Qf6-+ (17...Bc4?! 18.Rd8 Ng3 19.Rf8 Rf8 20.hg3=+)) 17.Nf3 (17.Rd1 Qc8 18.Qh4-+) 17...Qd3 18.Ra2 (18.Qg7 Kg7 19.Nd4 Ne4 20.Ne6 Kg8 21.Nf8 Qe2) 18…Ba2 (18...Ba2 19.e4 Ne4-+; 18...Qb1 19.Kd2 Ne4) 0-1. aravind555 (1790) - hrrald (1795), lichess.org, 2020.

3.Nc3 Bb7 4.Nf3 g6 (4...e5 5.a3 e4 6.Nd4=) 5.d3 Bg7 6.Bb2 0-0 7.g3 (7.e4!?=) 7...Bf3=+ 8.ef3 d6 (8...Nc6!?=+) 9.Bg2= Nbd7 10.0-0 a6 11.Qe2 e5 12.Rfe1 Rb8 13.a4 c5 14.b5 ab5 15.ab5 Qc7 16.Ra6 Rfc8 17.Rea1 Qd8 18.Nd5 (better is 18.Ne4 Ne4 19.fe4+/-) 18...Nd5= 19.cd5 Qe8 20.Qc2 f5 21.Qc4 Bf6 22.f4 Kf7 23.Ra7 Ra8? (better is 23...Kg8!?+=) 24.fe5 Ra7 25.Ra7 (25.e6 Kg8 26.Ra7 Bb2 27.Rd7 Ra8+/-) 25...Be5 26.Be5 de5 27.d6 Kf6 28.Qh4 Kg7? (better is 28...Ke6 29.Bc6 Rd8+/-) 29.Bc6 Rd8 30.Qd8!! (30...Qd8 31.Rd7 Qd7 32.Bd7+-) 1-0. weBNimzo - Freyser, ChessWorld.net, 2004.

3.d4 g6 4.Nc3 Bg7 5.Bb2 Bb7 6.f4 e6 7.Nf3 0-0 8.e3 Ne4 9.Bd3 Nc3 10.Bc3 f5 11.0-0 d6 12.Qb3 Kh8 13.d5 ed5 14.Bg7 Kg7 15.cd5 Qf6 16.Nd4 Rf7 17.Ne6 Kg8 (17...Kh8!?+/-) 18.Rac1+- Na6 19.e4 fe4 20.Be4 Re8 21.Rce1 Rfe7 22.f5 g5 23.Rf3 h6 24.a3 Nb8 25.Qc3 (25.Rfe3!?+/-) 25...Qc3+= 26.Rc3 Kf7? (better 26...Nd7+/-) 27.f6+- Kf6 (27...Rd7 28.Bf3 Kg6 29.Nf4 gf4 30.Re8 Na6+-) 28.Rf3 Ke5 29.Bg6 (29.Rf5) 29...Kd5+- 30.Nc7! Rc7 31.Re8 (better 31.Rd3!? Kc4 32.Rc1 Kb5 33.Rc7 Re1 34.Kf2 Re6 35.Rb7 Rg6 36.Rb8 Kc4+-) 31...Nd7 (31...Nc6 32.Rd3 Kc4 33.Rd6+-) 32.Be4 (32.Rf1 Kc6 33.Rc1 Nc5+-) 32...Kd4 33.Bb7 (33.Rd3!? Kc4 34.Rd6 Be4 35.Re4 Kb3+-) 33...Rb7 34.Re6 (34.Re7!? Nc5 35.Rb7 Nb7+-) 34...Kd5 35.Rh6 Ne5 36.Rff6 Nc4 (36...Rd7 37.Rh5 g4 38.Rf4+-) 37.Rfg6 Re7 (37...Na3 38.Rg5 (38.Rd6?! Kc4+/-) 38...Kc4 39.Rh4 (39.Rd6?! Kb4 40.h4 a5+/-) 39...Kc3 40.Rg3 Kb2 41.b5+-) 38.Rg5 Kc6 39.h4 (39.b5 Kb7+-) 39...Re3? (better 39...Na3 40.Rh8 Nb5+-) 40.b5 Kd7 41.Rg7 Re7 42.Re7 (42.Rhh7!? Rg7 43.Rg7 Ke6+-) 42...Ke7 43.Rh7 (43.Rh7 Kf6 44.Ra7+-) 1-0. Minister007 (2320) - nonleague (2305), Rated blitz game, lichess.org, 2020.

3.Nf3 e6 4.Qb3 c5 5.bc5 Bc5 6.d4 Be7 7.e3 0-0 8.Nbd2 d5 9.cd5 ed5 10.Ba3 Ba6 11.Ba6 Na6 12.0-0 Rc8 (12...Re8 13.Rfc1=) 13.Rfc1 (13.Qa4 Nc7 14.Be7 Qe7 15.Qa7 Qe6+/-) 13...Nc7+= 14.Be7 Qe7 15.Rc2 Na8 16.Rac1 Rc2 17.Qc2 g6 18.Ne5 Nd7 (18...Re8!?+/-) 19.Nc6+- Qa3 20.Nb1 Qa6 (20...Qd6 21.Na7 Re8 22.Nc8+-) 21.Ne7 Kg7 22.Nd5 Qb7 23.Qc6 Qc6 24.Rc6 f5 25.Nbc3 Nf6 26.Nf6 Rf6 27.Rc8 Rf8 28.Rf8 Kf8 29.Nd5 Kf7 30.f3 Ke6 31.e4 fe4 32.fe4 Kd6 33.Kf2 Nc7? 34.Nc7 Kc7 35.Ke3 g5 36.e5 b5 37.Ke4 a5 38.Kf5 b4 39.e6 Kd8?? 40.Kf6 Ke8 41.e7 a4=+ 42.Ke6? b3 43.d5 b2 44.d6 b1Q 45.d7 1-0. schaep1 - dannyboy238, ChessWorld.net, 2004.

3.g3 Bb7=+ 4.f3 g6 (4...e5 5.b5-/+) 5.Bb2 Bg7 6.Nc3 0-0 7.Nh3 d6 8.Bg2 Nbd7 9.0-0 e5 10.e4 c5 11.b5 a6 12.a4 ab5 (12...Qe7 13.ba6 Ra6 14.d3=) 13.ab5 Qe7 14.Qc2 h6 15.Ra4 (15.d3 Qe6+=) 15...Qe6 16.Nd5 Nd5 17.cd5 Qe7 18.Rfa1 Ra4 19.Ra4 Ra8 20.Ra8 Ba8 21.Qa4 Qd8 22.Qa7 Qc8 23.Nf2 Qb7 24.Qa4 h5 25.Bh3 Nf8 26.f4 f6 27.d3 Kf7 28.f5 g5 29.Nd1 g4 30.Bf1 Nh7 31.Ne3 Ng5 32.Nc4 Nf3 33.Kg2 Ke7 34.Qa6 Qb8 35.Qb6 Qb6 36.Nb6 Bb7 37.Be2 Nd2 38.Bd1 Bh6 39.Bc3 Nb1+/- 40.Ba5 Na3 41.Ba4 Bc1 42.Nc4 Nc4 43.dc4 Bg5 44.h3 h4 45.hg4 hg3 46.Kg3 Kd7 47.Kf3 Kc8 48.Ke2 Kd7 49.Bd2 Bh4 50.Kf3 Kc7 51.g5 fg5 52.Kg4 Bc8 53.Bg5 Bg5 54.Kg5 Bd7 55.f6 (55...Kd8 56.Kg6 Be8 57.f7 Bf7 58.Kf7+-) 1-0. DanielMartin - Freyser, ChessWorld.net, 2004.

4.Bb2 e6 5.a3 Nc6 6.Nf3 a5 7.b5 Ne7 8.Be2 Ng6 9.0-0 c6 10.Nc3 Bd6 11.d4 Bb8 12.c5 0-0 13.Na4 Qc7? (better is 13...bc5!? 14.Nc5 Ra7+=) 14.cb6+– Qd6 (better is 14...Qd8!?+–) 15.Nc5 Nh4 16.Nb7?? (better is 16.g3 cb5 17.Nh4 (17.gh4?? Bf3 18.Re1 Qh2 19.Kf1 Qg2#) 17...Qb6 18.Nb7 Qb7 19.Qb3+–) 16...Nf3 17.Bf3 Qh2# 0–1. Radwan,Jan (1715) – Olejnik,Bernard (1885), Turniej Szachowy Niepelnosprawnych Poland, 2010 (=1.b4 Nf6 2.c4 b6)

4.Nf3 e6 5.a3 Be7 6.Be2 0-0 7.0-0 d5 8.d4 c5 9.bc5 bc5 10.dc5 Bc5 11.Nc3 Nbd7 12.Rb1 Qc7 13.Qc2 Rab8 14.Nb5 Qd8 (15.cd5 Bd5=). NathanStack – dannyboy238, ChessWorld.net, 2004.

4.Bb2 d6 5.d4 Nbd7 6.d5 g6 7.e4 Bg7 8.Bd3 c6 9.0-0 0-0 10.Re1 cd5 11.cd5 Rc8 12.Nbd2 Ne8 13.Bg7 Kg7 14.Rc1 Rc1 15.Qc1 Nef6 16.Qc2 Qc8 17.Qb2 Ba6 18.Rc1 Qb7? 19.b5+– (19...Bb5 20.Bb5+–) 1–0. schaep1 – Freyser, ChessWorld.net, 2004.

4.Nc3 e6 5.a3 Be7 6.d3 d5 7.cd5 ed5 8.Bb2 Nbd7 9.e3 0-0 10.Be2 c5 11.bc5 Nc5 12.0-0 Bd6 13.Nb5 Bb8 14.Rc1 a6 15.Nbd4 Qd7 16.Nb3 Qe7 17.Nc5 bc5 18.Qb3 Bd6 19.Nh4 Bc8 20.Bf6 Qf6 21.Qd5 Rb8 22.Rc4 Rd8 23.Qf3 Qg5 24.g3 Be6 25.Ra4 Rb6 26.d4 Rb3 27.Ra5+= Bd5? 28.Qf5+– Qf5 29.Nf5 Bf8 30.dc5 Rc3 31.Rd1 g6 32.e4 gf5 33.ed5 Bc5 34.Ra6 Ra3 35.Rc6 Bd6 36.f4 Kg7 37.Bc4 Rd7 38.Kf1 h5 39.Kg2 h4 40.Bd3 Kf6 41.gh4 Rd8 42.h5 Kg7 43.Bf5 Bf4 44.d6 Ra2 45.Kf3 Bh2 46.d7 Raa8 47.h6 Kh8 48.Rc8 Rac8 49.dc8Q Rc8 50.Bc8 Kh7 51.Rh1 Bd6 52.Bf5 Kh8 53.Re1 Bf8 54.Re8 Kg8 55.Kf4 (55...f6 56.h7 Kg7 57.Rf8 Kf8 58.h8Q Ke7 59.Qg7 Kd6 60.Qf6 Kc5 61.Qe5 Kc6 62.Be4 Kd7 63.Qd5 Kc8 64.Ke5 Kc7 65.Qb7 Kd8 66.Ke6 Ke8 67.Qe7) 1–0. weBNimzo – dannyboy238, ChessWorld.net, 2004.

4.d4 e6 5.a3 Be7 6.e3 0-0 7.Bd3 d5 8.cd5 ed5 9.0-0 Nbd7 10.Nc3 c5 11.bc5 bc5 12.Rb1 Qc8 13.Qc2 c4 14.Bf5 g6 15.Bh3 Ne4 16.Bd7 Qd7 17.Ne5 Qc8 18.Ne4 de4 19.Bd2 Bd5 20.Bb4 f6? 21.Be7+– fe5 22.Bf8 Qf8 23.Rb5 Rd8 24.de5 Qa3 25.Rd1 Kf7 26.Rbd5 Rd5 27.Qc4 Qa5 28.Qd5 Qd5 29.Rd5 Ke6 30.Ra5 h5 31.Kf1 g5 32.Ke2 g4 33.g3 a6 34.Kd2 Kf5 35.Kc3 h4 36.Kd4 hg3 37.hg3 (37...Kg6 38.Ke4+–) 1–0. tired rook – dannyboy238, ChessWorld.net, 2004.

4.e3 e6 5.a3 Be7 6.d4 0-0 7.Bb2 d5 (7...c5 8.dc5 bc5 9.b5+=) 8.Nc3= c5 9.cd5 Nd5 10.Nd5 Qd5 (10...Bd5 11.dc5 bc5 12.Bd3=) 11.Bd3 (better is 11.dc5!? bc5 12.b5=) 11...cb4+= 12.e4 Qd8 13.0-0 ba3 14.Ba3 Ba3 15.Ra3 Nc6 16.e5 (16.Ra4 a5-/+) 16...g6 (16...Qe7 17.Ra4 Na5-/+) 17.h4 (better is 17.Be4!?+=) 17...Nd4-+ 18.Ng5 Qd5?? (better is 18...Qe7 19.Ra4 Rfd8-+) 19.Be4+= Qe5 20.Bb7 Rad8 21.Re1?? (21.Ra2 Qc7 22.Be4 Qc4+=) 21...Qc5?? (better is 21...Nc2! 22.Qc2 Qe1 23.Kh2 Rd2-+) 22.Ra7 (22.Rd3 b5+=) 22...b5 (22...Nc6 23.Qa1 Na7 24.Qa7+=) 23.Ra1 (better is 23.Ra6!?+/–) 23...Nc2= 24.Qc1 Rd4? (24...Qc3 25.Rf1 Qa1 26.Qc2= (worse is 26.Qa1 Na1 27.Ra1 Rb8-/+)) 25.Nf3 (better is 25.Be4 Rc4 26.Bc2 Rc2 27.Qf4+–) 25...Rc4= 26.Qh6 f6 (26...Ne1?? 27.Ng5 (27.Re1?! Qb4=; worse is 27.Ne1 Rb8 28.Bf3 b4-+) 27...Qg5 28.Qg5+–) 27.Be4 (better is 27.Red1 Na1 28.Rd7= (28.Ra1? Qc7-+)) 27...f5?? (better is 27...Re4 28.Re4 Na1 29.Re6 Nb3+=) 28.Ra7 (better is 28.Ng5 Qc7 29.Ne6+–) 28...Qa7-+ 29.Bc2 Rc2 30.Rf1 b4 (better is 30...Rd8 31.Qg5 Rd5-+) 31.Ng5 (31.h5 Rf6-+) 31...Qg7 (better is 31...b3 32.Kh2 Re8-+) 32.Qg7 Kg7 33.Ne6 Kf7 (33...Kg8!? 34.Nf8 b3 35.Rb1-+) 34.Nf8 Kf8 35.Rb1 Rc4 36.g3 Ke7 37.f3? (better is 37.Kf1-+) 37...Kd6 38.Kf2 (38.Kf1 Kc5 39.Rb2 Rc3-+) 38...Kc5 39.Ke2 Rc3 (better is 39...Rc2 40.Ke3 Rc3 41.Kf4 b3-+) 40.Rf1?? (40.Ra1-+) 40...b3 41.Kd2 (41.g4-+) 41...Kc4 (better is 41...Kd4 42.Re1 Rc2 43.Kd1 Ra2-+) 42.Rc1 (42.Rg1-+) 42...Rc1 43.Kc1 Kc3 0–1. queensservant (1735) – n_markus_n (1605), gameknot.com, 2013. (=1.c4 Nf6 2.b4 b6 3.Nf3 Bb7)

4.e3 e6 5.Be2 Bb4 6.0-0 0-0 7.Bb2 d5 8.cd5 Nd5 9.Qb3 a5 10.Qc2 Be7 11.Nc3 Nb4 12.Qd1 c5 13.d4 N8c6 14.a3 Nd5 15.Nd5 Qd5 16.dc5 Bc5 17.Qd5 ed5 18.Rfd1 Rad8 19.Nd4 Ne7 20.Bb5 Bc8 21.h3 f5 22.Ne2 Ng6 23.Bc6= Be6 24.Nd4 Bd4 25.Bd4 Rc8 26.Bb5 Rb8 27.Rac1 Rfc8 28.a4 Ne7 29.Rc8 Nc8 30.Rc1 Kf7 31.Rc7+/– Ne7 32.Be5 Rd8 33.Bg7! Rg8 34.Bd4 Rb8 35.Be5 Rd8 36.Rb7 Kf8?? 37.Rb6 Kf7 38.Rb8 Rb8 39.Bb8 Nc8 40.Bc7 Na7 41.Ba5 Nb5 42.ab5 Ke7 43.Bc3 Kd6 44.Bd4 Kc7 45.b6 Kb7 46.Kf1 Kc6 47.Ke2 Bc8 48.Kf3 Kd6 49.g4 fg4 50.hg4 Ke6 51.Kf4 Kd6 52.Kg5 Kc6 53.f4 Kd7 54.f5 Ke7 55.Kh6 Kf7 (55...Kf8 56.Kh7 Kf7 57.g5 Bf5 58.g6 Bg6 59.Kh6+–) 1–0. Argento1960 – dannyboy238, ChessWorld.net, 2004.

4.g3 e6 5.a3 Be7 6.Bb2 0-0 7.Bg2 d5 8.0-0 Nbd7 9.cd5 ed5 10.Nd4 c5 11.Nf5 Re8 12.Ne7 Qe7 13.bc5 Nc5 14.Re1? Rad8?? 15.d4= Nce4 16.Nd2 Nd2 17.Qd2 Ne4 18.Qf4 g5 19.Qg4 Bc8 20.Qh5 Bf5 21.e3 Bg6 22.Qg4 f5 23.Qd1 g4 24.f3 gf3 25.Bf3 Qg5 26.Qe2 h5 27.Be4 Re4 28.Qf3 h4=+ 29.Rac1 hg3 30.hg3 Rd7 31.Rc8=+ Kg7 32.Re2 Rde7 33.Bc1 Kf6 34.Rc6 Kg7 35.Rh2 Re3 36.Be3 Re3 37.Qf2 Ra3 38.Kg2 f4 39.Rg6 Qg6 40.Qf4 Ra2 41.Kh3 Qh5 42.Qh4 Qf5 43.g4 Ra3 44.Kg2 Qf3 (45.Kg1 Ra1 46.Qe1 Re1) 0–1. DanielMartin – dannyboy238, ChessWorld.net, 2004.

3.b5 d5 4.e3 e5 5.cd5 Nd5 6.Bb2 Bd6 7.Qb3 Be6 8.Bc4 Nc7 9.e4 0-0 10.Nf3 Bc4 11.Qc4 Qe7 12.0-0 Nd7 13.Nc3 Nb6 14.Qb3 c4 15.Qc2 f6 (15...a6 16.a4 ab5 17.Nb5 Nb5 18.ab5=) 16.a4 (16.Na4 Na4 17.Qa4 Qf7+=) 16...Rac8 17.a5 Nd7 18.Qa4 Bb4 (18...Qe6 19.Ba3 Nc5 20.Bc5 Bc5 21.Rfd1=) 19.Ba3 (19.Na2!? Bc5 20.Qc4 Qf7 21.Qf7 Kf7 22.Nc3+=) 19...Ba3= 20.Ra3 Qc5 21.Rc1 b6 22.Ne2 (better 22.Rd1=) 22...Ne6?? (better 22...Nb5 23.Rb3 a6-/+) 23.Rac3+/- Qd6 24.Rc4 Rc4 25.Qc4 Ndc5 26.ab6 ab6 27.d4 ed4 28.Ned4 Re8 29.Ne6 Qe6 30.Qe6 Re6 31.g3 (31.Nd2!? Ne4 32.Rc6+=) 31...Re4= 32.Rb1 g5 33.Nd2 Rd4 34.Nf3 Rd3 35.Kg2 Kf7 36.h4 g4 37.Ne1 Rd2 38.Rb3?? (better 38.Kg1-/+) 38…Ne4 0-1. bjoernsen (2310) - mecker (2325), Rated blitz game, lichess.org, 2017. (=1.c4 A15: English Opening: 1...Nf6 1...Nf6 2.b4)

3.b5 e5 4.Bb2 d6 5.Nc3 Bf5 (5...a6 6.e4+=) 6.d3 Qa5 (6...Be7 7.e4 Bd7 8.Be2=) 7.e4= Bg6 (7...Bd7 8.Nf3=) 8.Qd2 (8.Nf3 a6=) 8...Nbd7 (8...Be7 9.f4=) 9.Be2 Be7 10.Nh3 (10.f4 a6=) 10...h6 11.0-0 Qc7 (11...0-0 12.f4+=) 12.f4 0-0-0 (12...0-0 13.a4+=) 13.a4 Qa5 14.Qe3 (14.Qc2 Rdf8+/–) 14...Kb8+= 15.Rfc1 Rc8 (15...Qb4 16.Rab1+=) 16.Nd5+/– Nd5 17.cd5 (17.ed5?! Bf6 18.fe5 Be5 (worse is 18...de5 19.Bg4 Kc7 20.Nf2+/–) 19.Be5 Ne5=) 17...Qd8 (17...Bf6 18.f5 Bh7 19.Bc3+=) 18.Bg4 Rf8 (18...f5 19.Bf5 Bf5 20.ef5+/–) 19.fe5 (better is 19.Bd7 Qd7 20.fe5+–) 19...f6? (better is 19...f5 20.ef6! Bf6 21.Bf6 Rf6+–) 20.Nf4 Qe8 ½–½. Roquet Estrada,Albert (1630) – Garcia Cachinero,Jesus, 4th Obert de Mollet del Valles, 2016.

3.bc5!? Qa5 4.Ba3+=.

3.bc5 e6 4.Nc3 (better is 4.d4!?+=) 4...Bc5= 5.d4 Bb4 6.Qb3 Bc3 (6...Nc6 7.a3 Nd4 8.Qb2-+) 7.Qc3= 0-0 8.f3 d5 9.Bg5 (9.e3 Nc6=) 9...dc4 10.e4? (10.Qc4 Nc6 11.Rd1 e5=) 10...h6?? (10...Ne4 11.fe4 Qg5 12.Ne2-+) 11.Bh4?? (11.Bf6!? Qf6 12.Bc4=) 11...g5 (better is 11...Ne4 12.Bd8 Nc3-+) 12.Bf2 b5 13.a4 ba4 14.Bc4 Ba6 15.Ra4 Qb6 16.Ba6 Na6 17.d5 Qb1 18.Ke2 Rfc8-/+ 19.Qf6?? Rc2 20.Kd3 Qd1 (21.Ke3 Qd2). NathanStack – 2good2be1, ChessWorld.net, 2004.

3.Nf3 cb4=+ 4.e3 Nc6 5.Be2 e5 6.0-0 e4 7.Nd4 Bc5 8.Nb3 Bd6 9.d4 ed3 (9...Qc7 10.h3-/+) 10.Bd3 Be5 11.Nd4 d5 (< 11...Bd4 12.ed4 0-0 13.Be3=+) 12.Nd2 (12.Bb2 dc4 13.Bc4 0-0=+) 12...Bg4 (12...dc4 13.Nc4 Bd4 14.ed4=+) 13.Qa4 (13.Qe1 Qd6 14.f4 Bd4 15.ed4 Kd8=+) 13...0-0 14.Nc6 bc6 15.Rb1 dc4 16.Bc4 Bc3 17.Qc2 Qd7 18.f3 Bf5 19.e4 Qd4 20.Kh1 Bg6 (20...Bd2 21.Bd2 Be6 22.Rb4 Rab8+=) 21.Bd3?? (better is 21.Rd1-/+) 21...Rad8-+ 22.Be2 Bd2 23.Rd1 Be4 (24.fe4 Ne4-+) 0–1. Argento1960 – weBNimzo, ChessWorld.net, 2004.

4.Bb2 Nc6 5.Nc3 Bc5 (6.Na4 Be7=+). sugamuxi – 2good2be1, ChessWorld.net, 2004.

4.d4 ed4 5.Qd4 Qa5 6.Qc3 Qc3 7.Nc3 Bc5 8.Bg5=.

4.e4 Bc5=+ 5.d3?? (5.Nc3 Nc6=+) 5...0-0 (better 5...Bd4-+) 6.Nc3 Nc6 7.h3 Qb6 8.Qd2 Bb4 9.a3 Ba5 10.Nf3 (better 10.Bb2!?=+) 10...Nd4-+ 11.Bb2 Nb3 12.Qc2 Na1 13.Ba1 d6 14.Be2 Be6 15.0-0 Bc3 16.Bc3 Rac8 17.Rb1 Qc7 18.Qb3 (18.Nd2 Nd7-/+) 18...b6 19.a4 Nd7 20.a5 ba5 21.Qa3 Rb8 22.Ra1 Nc5 23.Ba5 Qb7 24.Kh2 Qb2 25.Bf1 (25.Ra2 Qa3 26.Ra3 Rb2-+) 25...Qa3 26.Ra3 Rb3 (26...Rb1 27.Nd2 Rb7 28.Bc3-+) 27.Ra2 (27.Rb3!? Nb3 28.Bc7-/+) 27...Nd3 28.Bd3? (better 28.Bc7-+) 28...Rd3 29.Bc7 Bc4 30.Ra7 h6 (30...f5 31.ef5 Rf5 32.Ne1-+) 31.Rb7 (31.Ne1 Rd4-+) 31...d5 (better 31...f5 32.Rb4 fe4 33.Ne5 de5 34.Rc4 e3 35.fe3 Re3-+) 32.Ne5 Rb3 33.Rb3 Bb3 34.ed5 Bd5 35.Nd7 Rc8 36.Nb6 Rc7 37.Nd5 Rc2 38.Kg3 h5 39.f3 0-1. Minister007 (2325) - IamHotUrNot (2375), Rated blitz game, lichess.org, 2020.

4.Nf3!?+=.

4.g3 Bc5-/+ 5.Bg2 d5 6.cd5 Nd5 7.Bb2 (better is 7.Nf3!?=+) 7...Bf2!-+ 8.Kf2 Qb6 9.Ke1 Qb2 (10.Nc3 Nc3 11.dc3 Qc3 12.Kf2 0-0-+) 0–1. 2good2be1 – weBNimzo, ChessWorld.net, 2004.

3.a4 e5 4.Ba3 Na6 5.b5 Ba3 6.Ra3 Nb4 7.e3 c5 8.Nf3 e4 9.Ng5 0-0 10.Nc3 Qe7 11.a5 d6 12.h3 h6 13.Nge4 Ne4 14.Ne4 Qe4 15.d3 Qg6 16.g4 f5 17.Rg1 f4 18.e4 a6 19.b6 h5 20.g5 Qe6 21.Qh5 g6 22.Qh6 Nc2 23.Kd2 Na3 24.Qh4 Qe5 25.f3 Nb1 26.Ke1 Qc3 27.Kf2 Qd2 28.Be2 Qe3 29.Kf1 Nd2 30.Kg2 Qe2 31.Qf2 Bh3 32.Kh3 Qf2 33.Rg2 Qf3 34.Kh2 Qh5 35.Kg1 f3 36.Rd2 Qg4 37.Kf1 Qh3 White resigned 0-1. themuttsknutts - Aabexx (1630), ChessWorld.net, 2012.

3.Qa4 e5 4.Bb2 d5 5.Be5 Nbd7 6.Nf3 (6.Bd4 dc4 7.b5 a6 8.bc6 b5-/+) 6...Ne5-/+ 7.Ne5 dc4 8.e3 (8.Nc4? Qd4 9.Nc3 Qc4-+) 8...b5 9.Qc2 (9.Bc4!? Bd6 10.Bf7 Kf8 11.Nc6-/+) 9...Qc7-+ (worse is 9...Bb4 10.Nc6 Qd6 11.Nb4 Qb4 12.a4+=) 10.f4 Bb4 11.a4 0-0 12.ab5 cb5 13.Kf2 (13.Be2 Bb7 14.0-0 Rfd8-+) 13...Bb7 14.d3 g5! 15.e4? (15.fg5 Qe5 Double attack (15...Qe5 Deflection; 15...Qe5 Decoy)) 15...Qc5 16.Kf3 gf4 17.Ng4 (17.Nc4 bc4 18.Qe2 cd3 19.Kf4 de2 20.Be2-+) 17...Ng4 18.Kg4 Bc8 19.Kf4 f5 20.e5 (20.Qc4 bc4 21.Be2 fe4 22.Ke4 Bb7) 20...Qd4 21.Kf3 Bb7 22.Ke2 Qe5 23.Kd1 (23.Kf2 Bc5 24.d4 Bd4) 23...Qe1 0–1. b3inct – rekees (2150), gameknot.com, 2012.

3.Bb2 (--> 1.b4 c6 2.Bb2 Nf6 3.c4).

3.Qb3 g6 4.e3 Bg7 5.Bb2 Nh5 (5...d5 6.Nf3=) 6.Bg7+= Ng7 7.Nf3 0-0 8.Nc3 d6 9.d4 Be6 10.Ng5 Bf5 11.Rd1 h6 12.Nf3 Be6 13.h3 Qb6 14.Be2 Rd8 15.0-0 d5 16.cd5 cd5 17.Na4 Qd6 18.b5 Qd7 (better 18...Nd7!?+=) 19.Nc5+/- Qc8 20.Rc1 b6?? (better 20...Ne8+-) 21.Na6 (21.Ne6?! Qe6 22.Ne5 Kh7+/-) 21...Qb7 (21...Na6 22.Rc8 (22.ba6?! Qb8+/-) 22...Rdc8 23.ba6+-) 22.Rc7 (22.Rc7 Qc8 23.Rc8 Rc8 24.Nb4+-) 1-0. bjoernsen (2380) - emilains3 (2350), Rated blitz game, lichess.org, 2022.

3.Nc3 Na6 4.Qb3=.

3.Nc3 g6 4.d4 (4.Nf3 Bg7=) 4...Bg7 5.h3 (5.Nf3 0-0=) 5...0-0 6.e4 (6.Nf3 Na6 7.Qb3 d5=+) 6...d5 7.e5 Ne8 (7...Ne4!? 8.Nge2 Na6=+) 8.c5 (8.Nf3 Nc7+=) 8...b6 9.Nf3 (9.Rb1=) 9...bc5 (9...a5!? 10.Na4 Nd7=+) 10.bc5+= Nc7 (10...f6 11.ef6 Nf6 12.Be3+=) 11.Bd3 (11.Be2+/–) 11...f5 (11...f6 12.ef6 Rf6 13.Be3+=) 12.Bg5 (12.0-0 Ba6+–) 12...h6 (12...Ne6 13.Bd2+/–) 13.Bd2 (13.Be3 Ba6+–) 13...Ne6 (13...Ba6 14.Ba6 Nba6 15.0-0+/–) 14.0-0 Na6 (better is 14...a5+–) 15.Qe2?? (better is 15.Qa4 Nac7 16.Qc6+–) 15...Nb4+= 16.Nh4?? (16.Rfb1 a5+=) 16...Qe8?? 17.Bb1?? Ba6 18.Qf3? Bf1-+ 19.Kf1 a5?? 20.a3?? Na6?? 21.Ne2= Nac7 22.a4 Ng5 23.Bg5?? hg5-+ 24.Nf5 gf5 25.Bf5 e6 26.Qg4 Rf5 27.Ng3 Qf7 28.Nf5 Qf5 29.Qd1 Rf8 30.Qb3 Qf2 0–1. helmisflorin – szn (1670), internet, 2009.

3.c5 b6 4.Nf3 bc5 5.bc5 e6 6.Ba3 Na6 7.d4 Ne4 8.e3 Qa5 9.Qd2 Nd2 10.Nfd2 Nb4 11.Kd1 Qa4 12.Nb3 a5 13.Be2 Na2 14.Kc2 Nb4 15.Kc3 d6 16.Kb2 Ba6 17.Ba6 Ra6 18.Kc3 Nd5 19.Kb2 Qc4 20.Rc1 Qe2 21.Rc2 Qd3 22.cd6 Qb5 23.Rc5 Qe2 24.Rc2 Qe1 25.Nc3 Qa1 26.Ka1 Nc3 27.Rc3 a4 28.d7 Kd7 29.Bf8 ab3 30.Kb2 Rf8 31.Kb3 Rb8 32.Kc2 Ra2 33.Kd3 Rf2 34.Ke4 Rg2 0–1. MikeLWhit – melr11, ChessWorld.net, 2005.

3.d3 d5 4.Na3 (4.Nd2 e5 5.Rb1 Bd6=+) 4...e6 5.b5?? (better 5.Qb3=+) 5...Ba3 6.Ba3 Qa5 7.Qd2 Qa3 8.Rb1 (8.cd5 ed5 9.Rb1 d4-+) 8...Nbd7 (8...dc4!? 9.Nf3-+) 9.Rb3 Qd6 10.h4 (10.bc6 Qc6 11.cd5 Qd5-+) 10…0-0 (10...0-0 11.bc6 Qc6 12.cd5 Nd5-+) 0-1. rhometal – mgilbert, net-chess.com, 2020.

3.d4= e5 4.a3 ed4 5.Qd4 a5 (5...d5 6.cd5 cd5 7.Bg5=+) 6.b5 Be7 (6...d5 7.cd5 Qd5 8.Qd5 cd5 9.Bb2=) 7.Nc3 d6 (7...0-0 8.e4=) 8.Bf4 (8.e4 0-0=) 8...Nh5 9.Bd2 0-0 (9...Be6 10.e4=) 10.e4 Nd7 11.Be2 Nc5 12.Qe3 (12.Bh5 Nb3 13.Qd3 Na1+=) 12...Nb3 (12...Nf6 13.Rd1=) 13.Rd1 Nd2 14.Qd2 (14.Rd2? Bg5 15.Qd3 Bd2 16.Qd2 Nf6-+) 14...Bg5 (14...Nf6 15.Nf3=) 15.Qd6+= Qd6 16.Rd6 Be7 17.c5 (17.e5 Nf4=) 17...Bd6 (17...Nf4 18.g3 Ne6 19.Nf3=) 18.cd6 Nf4 19.g3 Ne2 20.Ke2 (20.Nce2 Re8 21.Nc3 cb5 22.Nb5 Re4 23.Ne2 Bg4-+) 20...Bd7 21.Nf3 cb5 22.Rb1 Rfe8=+ 23.Nd4 b4 24.ab4 a4 25.b5 f5 26.f3 Kf7 27.Kd3 fe4 28.fe4 Bh3 29.Nf3 Bg4 30.Nd2 Red8 31.Nc4 Be6 32.Rf1 Kg6 33.e5 a3 34.Ra1 Kf5 35.Rf1 Kg4 36.Ra1 Re8 37.Nb6 Ra5= 38.Kd4 Kh3 39.Nbd5 Bd7? 40.Ra2 Kg4 41.Nc7 Rc8+/– 42.Re2 Be8 43.e6 b6 44.d7 Bd7 45.ed7 Rd8 46.Re7 a2 47.Na2 Ra2 48.Ke5 Rd2 49.Nd5 Kh3 50.Rg7 h6 51.Kd6 Kh2 52.Kc7 Ra8 53.Nb4 Rb2 54.Nc6 Rb5 55.Rh7?? Kg3= 56.Rh6 Rd5 57.Rg6 Kf4 58.Rf6 Kg5 59.Rf1 Kh4 60.Kb7 Ra2 61.d8Q+= Rd8 62.Nd8 Rb2 63.Rh1 Kg3 64.Rg1 Kf3 65.Nc6 b5 66.Ne5 (66.Kb6 Ke3+=) ½–½. Zarkov – Rebel 9, computer game, 1997.

3.d4 e6 4.Nf3 (4.Bd2 d5 5.e3 Nbd7=) 4...Bb4=+ 5.Bd2 Qe7 (5...c5 6.Bb4 cb4 7.Nbd2=+) 6.c5 (6.e3=+) 6...a5 (6...Bd2 7.Nbd2 b6 8.e4=+) 7.Bb4 (7.a3!? Bd2 8.Nbd2=) 7...ab4-/+ 8.Qb3 (8.Nbd2 d5 9.cd6 Qd6-/+) 8...d5 9.Qb4 (9.cd6 Qd6 10.Nbd2 Nbd7-/+) 9...0-0 (9...Nbd7 10.Qb2 e5 11.Ne5 Ne5 12.de5-/+) 10.e3 b5 (better 10...Nbd7-/+) 11.cb6?? (better 11.Be2=) 11...Qb4-+ 12.Nfd2 Qb6 (better 12...Qb2 13.Bd3 Qc1 14.Ke2 Qh1 15.a4-+) 13.Nc3 Ba6 (better 13...Qb2 14.Bd3 Qa1 15.Ncb1-+) 14.Ba6 Qa6 15.0-0-0 Ne4! 16.Nde4 (16.Nce4 Qa3 Double attack (16...Qa2 Deflection; 16...Qa3 Decoy); 16.Nde4 Qa3 Double attack (16...Qa3 Decoy)) 16...de4 17.h4 Qc4 18.Kd2 Qd3 19.Ke1 Qc3 20.Ke2 Ra2 21.Kf1 Ra1 (21...Qc2 22.Kg1 Qf2 23.Kh2 Qg2) 22.Ra1 (22.Kg1 Rd1 23.Kh2 Rh1 24.Kh1 Qe1 25.Kh2 Qf2 26.h5 Nd7 27.Kh3 Ra8 28.h6 Ra1 29.hg7 Nf6 30.d5 Rh1) 22…Qa1 (22...Qa1 23.Ke2 Qb2 24.Kf1 Qc1 25.Ke2 Qc2 26.Ke1 Nd7 27.g4 Qb1 28.Kd2 Qd3 29.Ke1 Rb8 30.f3 Rb2 31.fe4 Qe2) 0-1. sirhenry – scottvan, gameknot.com, 2018. (=1.c4 Nf6 2.b4 c6)

3.d4 g6 4.Nf3 Bg7 5.Bb2 0-0 6.Nbd2 d5 7.c5 (7.e3 Bf5=) 7...a5=+ 8.a3 b6 (8...Bf5 9.Qa4=) 9.e3 bc5 (9...ab4 10.ab4 Ra1 11.Qa1=) 10.bc5 Bg4 11.Be2 (11.Qa4 Bf3 12.Nf3 Nfd7+=) 11...Nbd7 (11...Nfd7 12.Qc2+=) 12.0-0 Ne8 (12...Rb8 13.Ra2=) 13.Qc2 (13.Qa4 Qc7+=) 13...Qc7 (13...Bf5 14.Qc1+=) 14.h3 (14.Bd3 Rb8+=) 14...Bf3 15.Bf3 (15.Nf3 Rb8+=) 15...e5 16.Rfd1 (16.Rab1 Nef6+=) 16...e4= 17.Ne4 (17.Be2 f5=) 17...de4=+ 18.Be4 (18.Qe4 Rc8=+) 18...Nef6 19.Bd3 Rfb8 20.Rab1 Rb7 21.Bc3= Rab8 22.Rb7 Rb7 23.Rb1 Rb1 24.Qb1 Nd5 25.Bd2 f5 26.Bc4 N7f6 27.Qb6+= Kf8 28.Qc7 Nc7 29.Ba5 Ncd5 30.a4 Ke7 31.Bb6 Kd7 32.Ba6?? Ne8?? 33.a5 f4= 34.Bb7 fe3-/+ 35.fe3 Ne3 36.a6 Bd4 37.a7 Nc7 38.Bc7 Nd5 39.Kf1 Nc7 40.a8Q Na8 41.Ba8 Bc5 42.Ke2 Kd6 43.Bb7 g5 44.Ba6 Kd5 45.Bd3 h6 46.Kf3 Bd6 47.Be4=+ Kc5 48.Ke3 Kb4 49.Bc6= ½–½. alaamattar (2145) – cmouratidis (2055), net–chess.com, 2006.

3.Nf3 e5 4.Ne5 Bb4 5.e3 0-0 6.Be2 d5 7.0-0 Nbd7 8.Nf3 (8.d4 Ne5 9.de5 Ne4=) 8...dc4=+ 9.Bc4 Nb6 10.Be2 Nbd5 11.a3 Bd6 12.Bb2 Bf5 13.d3 Qb6 (13...Re8 14.Qc2=) 14.Qc2 Rfe8 15.Nc3 Nc3 16.Qc3 Rad8 17.Rab1 Qc7 18.Rfe1 Bg4 19.h3 Bh5 20.Ba1 b6 21.a4 c5 22.a5 h6 23.Rec1 Rb8 24.ab6 ab6 25.Rb5 Bh2 26.Nh2 (26.Kh1 Bd6+=) 26...Be2= 27.Qc2 Qc6 28.Rb3 Bh5 29.Qb2 Qd6 30.Nf1 Red8 (30...Re6!?=) 31.Nd2 Bg6 32.Nc4 Qe6 33.Ne5 Kh7 34.e4 Nh5 35.Rc5! Ra8 (35...bc5 36.Rb5 Double attack (36.Rb8 Pinning; 36.Rb8 Deflection; 36.Rb5 Decoy)) 36.Rc1+- Nf4 (36...Ra6 37.Nc4 f6 38.Rb6 (worse 38.Nb6 Nf4=+) 38...Rb6 39.Qb6 (39.Nb6?! Nf4 40.Rc7 Kh8=) 39...Qb6 40.Nb6 Rd3 41.e5+/-) 37.Kh2 f6 38.Ng6 (38.Rb6? Qe5 39.Qe5 fe5-+) 38...Kg6 39.Rb6 Rd6 40.Rd6 Qd6 41.d4 Nd3 42.e5 fe5 43.de5 Qd5 44.Qd4 Qd4 45.Rc6 (45.Bd4?? Nc1 46.g3 Nd3-+) 45...Kf5 46.Bd4 Ne5 47.Rc5 Re8 48.Re5 (48.f3 g6+-) 48...Re5 49.Be5 Ke5 50.Kg3 Kf5 51.Kh4 g6 52.Kg3 (52.g3 Kf6 53.Kg4 Kf7+-) 52...Kf6 (52...h5 53.Kh4 Kf4 54.f3+-) 53.Kf4 (53.Kf4 Ke7 54.h4+-) 1-0. Mely (2850) - kennys (2425), ChessWorld.net, 2011.

3.g3 e5 4.a3 d5 5.cd5 a5 (5...cd5 6.d4 Nc6 7.Nf3=+) 6.ba5 (6.dc6!? Nc6 7.ba5=) 6...Qd5=+ (6...Qa5?! 7.dc6 Nc6 8.Bg2=; < 6...Ra5 7.dc6 Nc6 8.Bg2=) 7.Nf3 e4 8.Nc3 Qa5 9.Nd4 Qe5 10.e3 Nbd7 11.Bg2 Nc5 12.0-0 h5 (12...Nd3 13.f3-/+) 13.Bb2 h4 14.f4 Qe7 15.Qc2 hg3 16.hg3 Bh3 17.Bh3 Rh3 18.Kg2 Rh8 (18...Rh5 19.Rh1-/+) 19.Nf5 (better is 19.Rh1 Rh1 20.Rh1-/+) 19...Qe6 20.Nh4 Qg4 21.Rh1 g5 (21...Nd3 22.Rab1-+) 22.fg5 Nh5?? (22...Bd6 23.gf6 Qg3 24.Kf1 Rh4 25.Rh4 Qh4 26.d4 ed3 27.Qf2-+) 23.Rh3?? (23.Ne4 Ne4 24.d3 Nhg3 25.Rh2 Nf5 26.Kh1 Neg3 27.Kg1 Ne2 28.Kf2 Qg3 29.Ke2 Qh2 30.Ke1 Qc2 31.Rd1 Qb2 32.Rd2 Qc1 33.Ke2 Rh4 34.a4 Rh2 35.Kf3 Qf1 36.Rf2 Qf2 37.Ke4 Rh4 38.Ke5 Bg7) 23...Ng3!-+ 24.Rg3 Qh4 25.Ne2 Qh2 26.Kf1 Nd3 27.Rg2 Qh1 28.Ng1 Ra5 (29.Qd3 Rf5 30.Rf2 Rf2 31.Kf2 Rh2 32.Kg3 ed3 33.e4 Qg2 34.Kf4 Qd2 35.Ke5 Qb2 36.Kf5 Qf2 37.Nf3 Qf3 38.Ke5 Bg7 39.Kd6 Qf4 40.Kc5 Qg5 41.e5 Qe5 42.Kb6 Qb5 43.Kc7 Ba1 44.Kc8 d2 45.Kc7 d1Q 46.Kb8 Be5 47.Kc8 Qg4; 28...Nb2 29.Qb2 Bd6 30.Qb7+–) 0–1. Freyser – marekt, ChessWorld.net, 2004.

3.g3 e6 4.c5 Be7 5.Bg2 0-0 6.Nf3 b6 7.d4 Ba6 8.a4 b5 9.a5 d6 10.0-0 Bc8 11.Nc3 d5 12.Bf4+= Na6 13.Rb1 Nh5 14.Ne5 Nf4 15.Nc6+/– Qc7 16.Ne7 Qe7 17.gf4 Bb7? 18.f3?? Rac8? 19.Nb5+– Bc6 20.Qd3 Rb8 21.Nd6 Nb4 22.Qd2 Kh8?? 23.Rb4 Rb4 24.Qb4 Qf6 25.Qd2 Rb8 26.e4 Qg6 27.f5 Qf6 28.fe6 Qe6 29.ed5 Bd5 30.Re1 (30.Re1 Qg6 31.Qb2+–) 1–0. ANJI – silver lining, internet, 2010.

4.cd5 cd5 5.d4 a5 6.b5 a4 7.Nc3 Bd7 8.e3 Qa5 9.Bd2 Qa7 10.Bd3 e6 11.Bc2 b6 12.Ba4 Bd6 13.Nge2 Bc8 14.g3 Nbd7 15.0-0 e5 16.Bb3 Bb7 17.de5 Ne5 18.f3 0-0 19.Bc1 Bc5 20.Rf2 Rad8 21.Nd4 Nc4 22.Qd3 Qb8 23.Bc4 dc4 24.Qc4 Rc8 25.Qd3 Rfd8 26.Bb2 Rd7 27.Rd1 Rcd8 28.Nce2 Qa8 29.e4 Re7 30.Qb3 Red7 31.g4 Ne4 32.fe4 Be4 33.Qc4 Bd5 34.Qc1 Bf3 35.Qe3 Be2 36.Re2 Qa4 37.Red2 Qb5 38.Qe4 Qc4 39.Qf4 Qb3 40.Kg2 Qd5?? 41.Nf3 1–0. mtr – doral, internet, 2001.

4.cd5 cd5 5.Nf3 a5 6.b5 Bg4 7.d4 Nbd7 8.Bf4 e6 9.e3 Rc8 10.Be2 Be7 11.0-0 0-0 12.Ne5 Be2 13.Qe2 Ne5 14.Be5 Nd7 15.Bf4 Nb6 16.Nd2 Bd6 17.Bd6 Qd6 18.Qd3 Rc7 19.Rfc1 Rfc8 20.Rc7 Rc7 21.Nb3 Nc4 22.Nd2 b6 23.Rc1 Qd7 24.a4 Nb2 25.Qb1 Na4-/+ 26.Qa1 Rc1 27.Qc1 h6 28.Qc6 Qc6 29.bc6 b5 30.Nb3 Kf8 31.Kf1 Ke7 32.Na5 Kd6 33.Ke2 Kc7 34.h4 b4 35.Kd3 Nb2 36.Kc2 Nc4 37.Nb7 Kc6 38.Nc5 Kb5-+ 39.h5 e5 40.Kd3 e4 41.Kc2 Na5 42.Nd7 b3 43.Kc3=+ Ka4 44.Nb6 Ka3 45.Nd5 b2 46.Kc2 Ka2 47.Nc3 Ka1 48.d5 Nb7 49.Kb3 b1Q 50.Nb1 Kb1 51.Kc3 Kc1 52.Kd4 Kd2 53.Ke4 Ke2 54.f4 Kf2-/+ 55.g4 Kg3 56.g5 Kg4 57.gh6 gh6 58.Ke5 Kh5 59.Kf5 Kh4 60.e4 Kg3 61.e5 Nc5 62.Kf6=+ Kf4 63.Kf7 Kf5 64.e6 0–1. tired rook – schaep1, ChessWorld.net, 2004.

4.cd5 cd5 5.Nf3 e6=.

4.e3 e5 5.cd5 cd5 6.d4 e4 7.Nc3 Bd6 8.Bd2 Nc6 9.Qb3 Be6 10.f3 0-0 11.Nge2 ef3 12.gf3 Nd7 13.0-0-0 (13.Kd1 Qf6 14.f4 Nb6=+) 13...a5 (13...Qf6 14.f4 Rfc8 15.Bg2-/+) 14.b5 a4 15.Qb2 Na5 16.Ng3 (16.Qa2!?-/+) 16...Qe7-+ 17.Nb1 Rfc8 18.Bc3 Nb6 19.Rd3 Nac4 20.Qg2 Ne3 21.Re3 Bf4 22.Nf5?? (22.Qf2 Nc4 23.Bc4 Be3 24.Qe3 Rc4 25.Kd1=) 22…Bf5 (23.Qe2 Be3 24.Kb2 Bb1-+) 0–1. NathanStack – schaep1, ChessWorld.net, 2004.

4.Nf3 dc4 5.Bb2-/+.

4.Nf3 Bg4 5.Nc3 (5.cd5 Nd5 6.e4 Nf6=) 5...e6 (5...dc4 6.Ne5+=) 6.e3 Be7 7.h3 Bf3 8.Qf3 d4 9.ed4 Nbd7 (9...Qd4!? 10.Bb2 0-0=) 10.Bb2 0-0 11.Bd3 a5 12.b5 c5 (12...Nb8 13.Rb1+/–) 13.Ne4 b6 14.Ke2 (14.0-0 cd4 15.Bd4 Nc5 16.Bc5 bc5+/–) 14...Ne4 15.Be4 Nf6?? (better is 15...Ra7+/–) 16.Ba8+– Qa8 17.Qa8 Ra8 18.dc5 Bc5 19.d4 Bd6 20.c5! bc5 21.dc5 Bc5 22.Rac1 Ne4 23.Rc4 Rd8 (23...f5 24.Rd1 Rb8+–) 24.Re4 h6 (24...Rb8 25.a4+–) 25.Rc1 Rd5 (25...Bb6 26.Rc6 Rb8 27.Be5+–) 26.Re5 Re5 (26...Ba3 27.Rd5 Bb2 28.Rc8 Kh7 29.Rdc5+–) 27.Be5 Ba3 (27...Bb6 28.Rc8 Kh7 29.Bc7+–) 28.Rc8 (28.Rc8 Kh7 29.b6+–) 1–0. Inving,Yugi – Hess,Volker, FICGS, 2008. (=1.c4 Nf6 2.b4 c6)

4.e3 a5 5.b5 a4 6.Qc2 g6 7.Nc3 a3 8.Nf3 Bg7 9.d3 (better 9.d4!?+=) 9...dc4=+ 10.dc4 0-0 (10...Ne4 11.Bd2 Bf5 12.Qb3-/+) 11.Bd3 Nbd7 12.bc6 bc6 13.0-0 Nc5 14.Be2 Bf5 15.Qd1 Nfe4 16.Ne4 Be4 17.Nd4 e5 (17...Ne6 18.Bg4 Nd4 19.ed4 Bd4 20.Bh6-/+) 18.Nb3 Qd1 19.Rd1 Nb3 20.ab3 Bc2 (20...a2!? 21.Rd2 Bb1-/+) 21.Rd2=+ Bb3 22.Ra3 (22.Ba3? e4 23.Rb2 Rfb8-+) 22...Ra3 23.Ba3 Ra8 24.Bb2 e4 25.f3 Ra2 26.Rd8 Bf8 27.Bd4 Re2 28.Bc5 Kg7 (28...ef3!? 29.gf3 Bc4-/+) 29.Bf8= Kf6 30.Rd6 Ke5? (30...Kg5 31.Rc6 ef3 32.gf3 Re3 33.Kf2=) 31.f4 (31.Rc6?! ef3 32.gf3 Re3+=) 31...Kf5 32.h3 (32.Rc6?! Kg4=) 32...Re3 33.Bh6 Rg3 34.Kf2 Rd3 (34...Rg2 35.Kg2 Bc4+-) 35.g4 1-0. bjoernsen (2370) - Frogkiller (2395), Rated blitz game, lichess.org, 2020.

4.e3 Bf5 5.Bb2 e6 6.Nc3 Nbd7 7.Nf3 Bd6 8.Be2 0-0 9.d3 h6 (9...a5 10.c5 Be7 11.a3=+) 10.h3 Bh7 (10...a5 11.c5 Be7 12.a3=+) 11.Rc1 a6 12.a3 b5 13.cb5 cb5 14.0-0 Rc8 15.Nb1 Qb6 16.Bd4 Qb8 17.Qb2 e5 18.Bc3 Rc6 19.Nbd2 Rfc8 20.Nb3 Ne8 (20...Qc7 21.Bd2=+) 21.Na5 R6c7 22.Bd2 Rc1 23.Rc1 Rc1 24.Qc1 Qc7 25.Qc7 Nc7 26.Nc6 Kf8 27.Kf1 f6 28.Bc3 Bg8 29.Nh4 Be6 30.Bg4 Kf7?? (better 30...Bg4 31.hg4 Kf7=) 31.Nd8+- Ke7 32.Ne6 Ne6 33.Nf5 Kf7 34.Nd6 (34.Nd6 Ke7 35.Nf5 Kd8 36.Nh6+-) 1-0. bjoernsen (2325) - cevdetsimsek (2335), Rated blitz game, lichess.org, 2020.

4.e3 Bf5 5.Nc3 e6 6.Nf3 h6 7.Be2 Nbd7 8.0-0 Bd6 9.Bb2 0-0 10.Rac1 Qe7 11.a3 Rfe8 12.h3 Rad8 13.Rfd1 Bb8 14.d4 Ne4 15.Ne4 Be4 16.Ne5 (16.Nd2!?=) 16...Ne5 17.de5 Qg5 18.f3 (18.Bf1 Bf3 19.Rd2 Qg6=+) 18...Bf5 (18...dc4 19.Qc3 Bd3 20.f4-/+) 19.f4 (19.Kh2!?=+) 19...Qg3-/+ 20.Kf1? (better 20.Bf3-/+) 20...Be4-+ 21.Bf3 (21.Bg4 Bg2 22.Ke2 h5 23.Bh5 Qh3-+ (23...Bh3?! 24.Bd4-/+)) 21...Bf3 22.gf3 Qf3 (worse 22...Qh3 23.Ke1 dc4 24.Rd8 Rd8 25.Qc2-+) 23.Ke1 dc4 (23...Qh3?! 24.Bd4-+) 24.Qc3 Bc7 25.Rd4 Bb6 (worse 25...Qh3 26.Rc2-+) 0-1. bjoernsen (2375) - Rababel2017 (2465), Rated blitz game, lichess.org, 2024.

4.cd5 cd5 5.d4 e5 6.de5 Bb4=+.

4.cd5 cd5 5.e3 e5 6.Nf3 Bd6 7.Bb2=+.

4.cd5 cd5 5.e3 g6 6.Nf3= Bg7 7.Bb5 Nc6 8.Nd4 (8.d4 Bd7=) 8...Bd7 9.Bc6 bc6 10.0-0 0-0 11.Na4 (11.d3 a5 12.ba5 c5=+) 11...Qc7 (11...a5 12.ba5 Qa5 13.Nb2-/+) 12.Nc5=+ Rfe8 13.Rb1 Ng4 (13...e5 14.Ndb3=) 14.Nf3 e5 15.h3 Nf6 16.Nd7 (16.d4 ed4 17.Nd4 a5=) 16...Qd7 (16...Nd7 17.d4=+) 17.d4= Ne4 18.Bb2 (< 18.de5 Nc3 19.Qd3 Nb1-+) 18...f6 19.de5 fe5 20.Nd2 Nd6 21.Qc2 Re7 (21...a5 22.ba5 Ra5 23.a4=+) 22.Rbc1 Rc8 23.Rfd1 Qb7 24.Qc5 Nf5 25.Nf3 Rcc7 26.g4 Nh6= 27.e4 d4 28.Ng5 Bf8 29.Qc4 Nf7 30.a4 Kh8 31.Ne6= Nd6 32.Qb3+/– Rc8 33.Nc5 Qb6 34.Rd3 Rf7 35.f3 h6 36.Kg2 Qd8 37.Kg3 Kh7 38.Rf1 h5 39.Ne6 Qf6=+ 40.Nf8 Rff8 41.Bc1? Ne4!-+ 42.Kg2 c5 43.Qd5 c4 44.Ra3 Nc3 45.Qa5 h4 46.Qa7 Rf7-+ 47.Bg5 Qe6 48.Qa5 e4 49.b5?? ef3 50.Rf3 Qe2 51.Kh1 Qf3 (51...Qf3 52.Kg1 Qf1 53.Kh2 Rf2) 0–1. Owen,H Rod – Humphrey,David, Seattle Octagonals, 1985.

4.cd5 cd5 5.Nf3 d4 6.Na4 e5 7.Ne5 Bb4 8.Rb1 (8.Qb3 Qd5+=) 8...Bd6+= 9.Nc4 Be7 10.e3 Nc6 11.Be2 Qd5 12.Rb5 Qg2 13.Bf3 Qh3 14.Rg1 (14.Nc5 Bc5 15.Rc5 0-0-/+) 14...0-0 (14...Nb4 15.Ne5 (15.Rg7?? Nd3 16.Ke2 Nc1 17.Qc1 d3 18.Kd3 Qd7 19.Ke2 Qb5-+) 15...d3 16.Rg2 Nc2 17.Kf1-/+) 15.Bb2 g6 (15...de3 16.Ne3 Qh2 17.Rbg5-+) 16.Rg3 (16.Rg2!?-/+) 16...Qh2-+ 17.Qe2 Qh4 18.e4 (18.Bd4 Nd4 19.ed4 Qd4-+) 18...Be6 19.Na5 (19.d3 Rfe8 20.Nd2 Bd6-+) 19...Na5 20.Ra5 b6 21.Re5 Rac8 22.a3 (22.Qd3 Rfd8-+) 22...Qf4 23.Re6 fe6 0–1. Inving,Yugi – Trokenheim,Marek (1800), FICGS, 2008. (=1.c4 Nf6 2.b4 c6 3.Nc3 d5)

4.e3 e6 5.a3 Nbd7 6.d4 Bd6 7.Nf3 Qe7 8.c5 Bc7 9.Bd3 e5 10.de5 Ne5 11.Ne5 Be5 12.Bb2 Ng4 13.Qc2 Qh4 14.g3 Qf6 15.Nd1 Bb2 16.Nb2 Ne5 17.0-0-0 a5 18.b5 Nd3 19.Qd3 0-0 20.Rd2 Bf5 21.Qd4 Qe7 22.bc6 Rac8 23.Na4 Rc6 24.Rb2 Rfc8 25.Kd2 Re6 26.f3 Re8 27.Rb3 Be4 28.Rf1 Rf6 29.f4 Re6 30.Nc3 Rc6 31.Rb5 b6 32.Na4 bc5 33.Rc5 Qb7 34.Rc6 Qc6 35.Rc1 Qh6 36.h4 Qg6 37.Rg1 Qg4 38.Nc3 Qf3 39.Ne4 Re4 40.Qb6 Qf2 41.Kd3 h6 42.Rc1 Kh7 43.h5 Qg3 44.Rc8 Qf3 (45.Rc2 Rf4-+) 0–1. Loulou – Goofy, playchess.de, 2003.

4.e3 e6 5.Rb1 e5=+.

4.e3 e6 5.Nf3 Bb4-/+ (6.Rb1 Bc3 7.dc3 Ne4-/+; 6.Qb3 Qa5-/+). sugamuxi – marekt, ChessWorld.net, 2004.

4.e3 Bf5 5.Nf3 Nbd7 6.Be2 e6 7.a3 Bd6 8.d4 0-0 9.0-0 Qe7 (9...dc4 10.Bc4 Nb6 11.Bd3=) 10.c5= Bc7 11.Re1 (11.Nh4 Ne4 12.Nf5 ef5=) 11...e5 (11...Ne4 12.Bb2=) 12.Nh4 (12.de5 Ne5 13.Nd4 Bd7=) 12...Bg6 (12...Be6 13.Nf3=+) 13.Ng6= hg6 (13...fg6 14.f4=) 14.Bf1 (14.Qb3 b6+=) 14...e4 15.h3 (15.Bb2 Kh7+=) 15...g5 16.Be2 g4 (16...b6!?=) 17.Bg4+= Ng4 (17...b5 18.a4 a5 19.Ba3+=) 18.Qg4 (< 18.hg4 Qh4=+) 18...f5 19.Qh5 Rf6 (19...Qf7 20.Qf7 Kf7 21.Rb1+=) 20.f4 (20.b5 Qf7 21.Qf7 Kf7+=) 20...ef3 (20...Qe6 21.Qd1+=) 21.Qf3 (< 21.gf3 Ne5 22.de5 Qe5 23.Nd5 Rh6=+) 21...Raf8 (21...Nf8 22.Qf2+=) 22.Bd2 Rg6 23.Ne2 Qh4 24.Rf1+/– Rf7 25.Be1 Qg5 26.a4 Nf6 27.Nf4 Bf4 28.ef4 Qh6 29.b5 Ne4 30.Rb1 Re6 31.bc6 bc6 32.Rb8 Kh7 33.g4 fg4 34.hg4 Ref6 35.f5 g6 36.Kg2+/– Rf8? 37.Rb7+– Kg8 38.Rh1 Rf5 39.gf5 Qg5= 40.Bg3 Rf5=+ 41.Rb8 Kg7 42.Rb7 Kg8 43.Rb8= Kg7 44.Rhh8?? Rf3 45.Rbg8? Kf7 46.Rf8 Ke6 47.Rf3 Qd2 48.Bf2 Qg5?? 49.Bg3 Qd2?? 50.Bf2 Nf2 51.Rf2 Qd4 52.Re2? Kf5 53.Rf8 Kg5 54.Rf3 Qc5 55.Re5 Kh6 56.Re6 d4 57.Rff6 Qg5 58.Kf2 c5 59.Ra6 c4 60.Rf3 Qc5 61.Rh3 Kg7 62.Rg3 Qf5 63.Kg2 Kh6 64.Rh3= Qh5?? 65.Kh2 (better is 65.Rh5 Kh5 66.Ra7+–). Vallejos,JoseAn – Rodrigues,Tiago Pereira, IRT5 Sao Paulo BRA, 2006.

4.e3 Bf5 5.Nf3 e6 6.a3 a5 7.ba5 Qa5 8.Be2 (8.Bb2 Bd6=+) 8...Nbd7 (8...dc4 9.Bc4 b5 10.Bb3=+) 9.0-0 (9.cd5 ed5 10.Nd4 Bg6=) 9...Bd6 (9...dc4 10.Bc4 b5 11.Be2-/+) 10.Nh4 (10.cd5 ed5 (< 10...Nd5 11.e4+/–) 11.Nd4 Be6=) 10...Bg6 (10...dc4 11.Nf5 Qf5 12.Bc4=+) 11.Ng6 (11.cd5 ed5 12.Bb2 Nb6=) 11...hg6=+ 12.h3 dc4 13.Bc4 Qg5 (13...b5 14.Ba2-/+) 14.f4=+ Qc5 15.Bb3 (15.Qb3 b5 16.Be2 e5=+) 15...b5 (15...g5 16.Na4 Qa5 17.Nb2=+) 16.Qc2 Qb6 17.Bb2 Ke7 (17...c5 18.d3=) 18.Ne4 Ne4 19.Qe4 Nf6 20.Qc2 Rh4 21.Rf3 Rah8 22.a4+= Rf4 23.Rf4 Bf4 24.Bd4 Qc7? 25.ef4 Qf4 26.Bc5 Ke8 27.ab5 Qb8 28.bc6 Rh5 29.c7! Qb7 30.Ba4 Nd7 31.c8Q! Qc8 32.Bd7 Kd7 33.Ra7 Kc6 34.Be3 (34.Be3 Kd6 35.Qc8 Ke5 36.Qc7 Kf6 37.Bf4 Rh3 38.Qf7) 1–0. Zero,R – Svendsen,T, Vadso, 1993.

4.e3 Bf5 5.Nf3 e6 6.Qb3 Nbd7 7.Bb2 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Qb6 11.b5 Qa5 12.Qa4 Qa4 13.Na4 cb5 14.cb5 Bb4 15.Bc3 Bc3 16.Nc3 Ke7 17.Be2 Ne4 18.Ne4 Be4 19.d3 Bf3 20.Bf3 Ra8 21.0-0 Ne5 22.Be2=+ Ra2 23.Re1 Rb2 ½–½. Kupka,S – Jankovec,I, Olomouc, 1973.

5.a3 a5 6.ba5 d4 7.Nce2 de3 8.fe3 Na6 9.a4 (9.Bb2 Bd6-/+) 9...Bg4 10.Nf3 Nb4 11.Nc3 e4 12.h3 Bd6 13.Qb3 ef3 (13...Bg3 14.Kd1 Bh5 15.Qb4 ef3 16.Kc2 Bg6 17.Kb2 fg2 18.Bg2-/+) 14.hg4-/+ Nd3 15.Bd3 Bg3 16.Kd1 fg2 (worse is 16...Qd3 17.gf3 Be5 18.Ra3+/–) 17.Rg1 Qd3 18.Qb7 0-0 19.Ba3 (19.Ne2 Rfb8 20.Ra3 Qe4-+ (20...Rb7?! 21.Rd3 Ng4 22.Ng3 Nf2 23.Ke2 Nd3 24.Kd3=)) 19...Ng4 20.Bc5 Rab8 21.Qc6 Rb2 22.Qg2 Nf2 23.Qf2 Qc2 24.Ke2 Qd2 25.Kf3 Qf2 (25...Qf2 26.Ke4 Re8 27.Be7 Rd2 28.Rg3 Re7) 0–1. kewois – insuk, gameknot.com, 2013.

5.a3 a5 6.Rb1 ab4-+ 7.ab4 d4 8.ed4 (8.Na4 de3 9.fe3 Na6-+) 8...ed4 9.Qe2 Be7 10.Nd1 (10.Ne4 0-0 11.f3 Na6-+) 10...0-0 11.Qd3 g6 (11...Bb4 12.Ne2 Bc5 13.Nf4-+) 12.Nf3 (12.Qb3 Na6 13.c5 b6-+) 12...Re8 13.Be2 Bf5 14.Qb3 Na6 (14...Bb1 15.Qb1 Bb4 16.0-0 Re2 17.Qb4-+) 15.d3 Bb4 16.Bd2 (16.Kf1-+) 16...Bd2 17.Nd2 Nc5 (18.Qb6 Qb6 19.Rb6 Bd3-+) 0–1. CHED – Garfield85 (1800), internet, 2006.

5.a3 a5 6.b5 d4 7.Nce2 Bc5-+.

5.a3 d4 6.ed4 ed4 (7.Na4 d3-/+; 6...Qd4?! 7.Nf3 Bg4 8.Nd4 Bd1 9.Ndb5 (< 9.Kd1 ed4 10.Ne2 c5=) 9...cb5 10.Nb5+= (< 10.Nd1 bc4 11.Bc4 a5=)). sugamuxi – schaep1, ChessWorld.net, 2004.

5.Bb2 Bb4 6.Qb3 Ba5 7.Nf3 e4 8.Nd4 0-0 9.Be2? (9.cd5 cd5 10.Ba3 Re8-/+) 9...a6 (9...c5 10.Ndb5 dc4 11.Bc4-+) 10.a4? (10.cd5 c5 11.Nc2 b5-/+) 10...Bc7 (better 10...c5!? 11.Nd5 Nd5 12.cd5 cd4 13.Bd4 Qg5-+) 11.c5 Nbd7 12.Ba3 Ne5 13.h3 Rb8 14.g4 (14.Rb1!?-/+) 14...Re8-+ 15.0-0-0? (better 15.Qc2-+) 15...b6 16.d3 (16.cb6 Bb6 17.g5-+) 16…bc5 (16...bc5 17.Qa2 cd4 18.ed4 ed3 19.Bd3 Nf3-+) 0-1. Minister007 (2315) - AndreyDavydov (2415), Rated blitz game, lichess.org, 2020.

5.Nf3 Bb4 6.Ne5 dc4 7.Bc4=.

5.Nf3 e4 6.Nd4 Bb4 7.cd5 Bc3 8.dc3 Nd5 9.Qb3 0-0 10.Ba3 Re8 11.Be2 Qg5 12.g3 Nd7 13.Rd1 Ne5 14.h4 Qf6 15.c4 Nb6 16.Bb2 Bg4 17.Kf1?? c5 18.Nb5 Be2 19.Ke2 Nbc4 (20.Rh2 Qf3 21.Ke1 Nb2 22.Qb2 Ng4-+) 0–1. 2good2be#1 – schaep1, ChessWorld.net, 2004.

4.a3 d5 5.d4 a5 6.de5 ab4 7.ef6 Qf6 8.cd5 bc3-/+.

4.a3 Be7 5.Bb2 0-0 6.e3 d5 7.cd5 cd5 8.Nf3 Bg4 9.h3 Bf3 10.Qf3 d4 (10...Nc6 11.Rc1=) 11.ed4 ed4 12.Ne2 Nc6 13.b5 Ne5 14.Qf5 Nc4 15.Bd4 Re8 (< 15...Ba3 16.Qd3 Bb2 17.Qc4 Ba1 18.Ba1+/–) 16.Rc1 (16.Ra2 Qa5=) 16...Na3=+ 17.Be3 Bb4 18.Nc3 Rc8 (18...Rc8 19.Be2 Nc4 20.Bc4 Rc4-/+) 0–1. marcosramos (2360) – kc (2310), net–chess.com, 2007.

4.Rb1 d5 5.cd5 cd5 6.e3 Nbd7 (6...Bf5 7.Bb5 Nbd7 8.Rb3-/+) 7.d4 e4 8.Bb5 (8.a4 Bd6+=) 8...a6 (8...Bd6 9.Qb3+=) 9.Bd7 (9.Be2 Nb6+=) 9...Bd7 (9...Qd7 10.Nge2+=) 10.Nge2 (10.Qb3 Rc8+=) 10...Bd6 11.Qb3 Be6 (11...Bg4 12.Bd2+= (12.Nd5?? Nd5 13.Nf4 Nf4 14.ef4 Be6-+)) 12.Bd2 (12.b5 Qe7+=) 12...0-0 (12...Rc8 13.b5 Rc4 14.Na4+=) 13.Na4 (13.b5 a5-/+) 13...Kh8 (13...b6 14.Rc1-/+) 14.Nec3 (14.0-0 b6-/+) 14...b6 (14...Ng4 15.g3-/+) 15.Ke2 (15.b5 a5-/+) 15...Rc8 (15...Nd7 16.h4-+) 16.h3 Nd7 17.g4 (17.b5 Qg5 18.Rbg1 a5-/+) 17...f5 (17...Qf6 18.Ke1-+) 18.gf5 Rf5 (18...Bg8!?-+) 19.Ne4+= Qh4 (worse is 19...de4 20.Qe6 Qf8 21.Rhf1+= (21.Qd7 Rf2 22.Ke1 Re2 23.Kd1 Rd2 24.Kd2 Qf2 25.Kd1 Qc2 26.Ke1 Qb1 27.Ke2 Rc2)) 20.f4 Qh5 (20...de4 21.Qe6 Qh5 22.Ke1 Bf4 23.ef4 Qh4 24.Ke2 Qh5 25.Ke1 Qh4 26.Kd1 Qh5 27.Ke1=) 21.Ke1 Be7 (worse is 21...de4 22.Qe6 Bf4 23.ef4 Qh4 24.Ke2 Qh5 25.Ke1 Qh4 26.Kd1 Qh5 27.Ke1=) 22.Nf2 Bh4 23.Qd1 (23.Nc3 Nf6 24.Qd1 Qg6-+) 23...Qe8 (23...Bf2 24.Kf2 Qh4 25.Ke2-/+) 24.Nc3+= Nf6 25.Qe2?? (better is 25.Rb3+=) 25...Rc3!-+ 26.Bc3 Ne4 27.Qa6 (27.Rb3 Bf2 28.Kd1 Bd7-+) 27...Nc3 (27...Bd7 28.a4 Ba4 29.Rb2 Nf2 30.Kd2 Nh1 31.Ra2 Be1 32.Kc1 Qe3 33.Kb1 Qe4 34.Kc1 Qf4 35.Bd2 Bd2 36.Rd2-+) 28.Rc1 Ne4 29.Rh2 Rf8 30.Ke2 (30.Rc2 Qg6 (worse is 30...Nf2 31.Rcf2 Qg6 32.Kd2-+; 30...Bf2?! 31.Rhf2 Nf2 32.Kf2-+) 31.Qf1 Nf2 32.Rcf2 Ra8-+) 30...Bf2 31.Rf2 Nf2 (better is 31...Qh5 32.Ke1 Qh3 33.Rcc2-+) 32.Kf2 Bh3 33.Qb6 Qe4 34.Rg1 Rc8 35.Qd6 (35.Qc5 Rc5 36.bc5 Qc2 37.Kg3-+) 35...Rc2 36.Kg3 Rg2 37.Kh4 g5 (37...g5 38.Kh5 Bg4 39.Kh6 Rh2 40.Kg5 Qf5) 0–1. Ackermann,Robert – Koscielski,Janusz (2340), Kleve op, 1999.

4.d4 Bb4-/+ 5.Qc2 0-0 6.Bg5 d5-+ 7.e3?? Nbd7 8.Bd3?? Qa5-+ 9.Nge2 dc4 10.0-0 cd3 11.Qd3 Bc3 12.Nc3 h6 13.Bf6 Nf6 14.Rfb1 e5 15.de5 Qe5 16.a4 Bf5 17.e4 Rfd8 18.Qe3 Bg6 19.Rb7 Rab8 20.Ra7 Rb3 21.Rc1 Ne4 22.Ne4 Re3 23.fe3 Qe4 24.a5 (24.Rf1 Qe3 25.Kh1 Qa7 26.h4 Rd4 27.Kh2 Qc7 28.Kg1 Qg3 29.Rf3 Rd1 30.Rf1 Be4 31.Rd1 Qg2#) 0–1. nickbarletta – Bull_Dog_Baz, ChessWorld.net, 2009.

4.e4 d5 5.cd5 Bb4 6.Bb2 (6.de6 Be6 7.Qc2 b6=+) 6...0-0 (6...ed5 7.ed5 cd5 8.Bb5 Nc6 9.a3 Bc3 10.Bc3-/+) 7.Qc2? (better is 7.dc6!? Nc6 8.Nge2=+) 7...ed5-+ 8.e5 Re8 9.Nb1 (9.a3 Re5 10.Nce2 d4 11.ab4 d3=) 9...Bg4 (9...Ne4 10.Nf3-+) 10.f3 Bh5 11.Bd3 Bg6 12.Ne2 Bd3-+ 13.Qd3 Nfd7 14.0-0 Ne5 15.Qd4 c5 16.Qf4 Nd3 17.Qg4 Nb2 18.Nf4 Nc6 19.Nc3 Bc3 20.dc3 d4 21.cd4 Qd4 22.Kh1 Ne5 23.Qg3 Ned3 24.Nd3 Nd3 25.h3 Re2 26.Rad1 Nf2 27.Rf2 Qd1 28.Kh2 Rf2 29.Qf2 Qd6 30.g3 Rd8 31.h4 Qd2 (31...Qd2 32.Qg2 Qg2 33.Kg2 Rd2 34.Kf1 Ra2-+) 0–1. patman007 – Bazza3, ChessWorld.net, 2005.

4.a3 Be7 5.Nf3 0-0 6.Nc3 a5 7.Ne5? ab4-+ 8.Ne4 Ne4 9.de4 Bf6 10.Bb2 ba3 11.Nf7 ab2 12.Ra8 Bc3 (13.Qd2 b1Q#) 0–1. Tortoza,Carlos – Rosner,Dirk (1930), CiF, 2006.

4.Bb2 Bb4-+ 5.Nc3 d5 6.cd5 cd5 7.a3 Ba5 8.Qa4 b5 9.Qb5 Nbd7 10.Kd1? Rb8 (11.Rc1 Rb5 12.Nb5 0-0 13.Na7 Qb6-+) 0–1. BeerClark – marekt, ChessWorld.net, 2004.

4.c5 Bf5 5.Nc3 Na6 6.a3 e6 7.e3 Be7 (7...Nc7 8.Nf3=) 8.Nf3 (8.Ba6 ba6 9.Qa4 Qc7+=) 8...0-0 (8...Nc7 9.Ne5=) 9.Bd3 (9.Ba6 ba6 10.Qa4 Qc7+=) 9...Nd7 (9...Bd3!? 10.Qd3 Nb8=) 10.Bf5+- ef5 11.0-0 (11.Qd3+-) 11...Bg5 (better 11...Nf6!?+=) 12.Ng5+- f6?? (better 12...Qg5 13.e4! Qf6 14.ed5 Nc7+-) 13.Ne6+- Qc8 14.Nf8 Qf8 (14...Nf8 15.b5 Nc7 16.bc6 bc6 17.Rb1+-) 15.Qc2 (15.Qf3 Qf7+-) 15...g6 16.Bb2 (16.b5 Nc7+-) 16...Re8 (16...Nc7 17.Qa4+-) 17.Rae1 (17.Qa4 Qe7+-) 17...h5 (17...Nc7 18.Bc1+-) 18.f3 Rd8 (18...Re6 19.e4 Qe8 20.Qb1+-) 19.e4 fe4 (19...Nc7 20.ef5 g5 21.f4+-) 20.fe4 Qg7 21.Rf3 (21.ed5 Nab8+-) 21...b6 (21...Re8 22.Rfe3 Nc7 23.ed5 Re3 24.Re3+-) 22.ed5 Nab8 23.dc6 Nc6 24.d5 (better 24.Qe4 Ndb8 25.Qe6 Qf7 26.Rf6 Qe6 27.Rfe6 bc5 28.bc5 Kf7+-) 24...Nd4 25.Qf2 Nf3 26.Qf3 Ne5 (26...bc5 27.Ne4 cb4 28.Nf6 Nf6 29.Bf6+-) 27.Qe4 Qf7 28.Rf1 Re8 (28...Kg7 29.Bc1 bc5 30.bc5+-) 29.Nb5 Qg7 (29...Ng4 30.Qf4 Re2 31.Bf6+-) 30.Be5 (better 30.Nd6!? Re7 31.Qh4 bc5 32.bc5 Ng4+-) 30...Re5 31.Qf3 Qh7 (31...bc5 32.bc5 h4+-) 32.Qf6 Re8 33.Nc7! Qc7 Deflection from g6 34.d6 (better 34.Qg6 Qg7 35.Qe8 Kh7+-) 34…Qd7 (34...Qd7 35.Qg6 Kh8+-). nickbarletta – gordiemac, ChessWorld.net, 2009.

4.c5 h6 5.Nf3 Bg4 6.Ne5 Be6 7.Nc3 Nbd7 8.Nd7 Qd7 9.Bf4 Bf5 10.e3 a6 11.Be5 Qe6 12.f3 Nd7 13.e4 de4 14.fe4 Bg6 15.Be2 f6 16.Bg4 f5 17.ef5 Bf5 18.Bf3 Ne5 19.de5 Qe5 20.Ne2 Rd8 21.Qc1 Rd4 22.a3 Bd3 23.Kf2 Be2 24.Be2 g5 25.Re1 Rf4 26.Bf3 Qd4 27.Qe3 Qe3 28.Re3 Bg7 29.Kg3 Rhf8 30.h3 R4f5 31.Bh5 Kd8 32.Rae1 e5 33.Rd1 Kc7 34.Rd6 Kc8 35.Bg6 Rf1 36.h4 gh4 37.Kh4 Rh1 38.Kg4 Rf4 39.Kg3 Rhh4 40.Bf5 Kb8 41.Rg6 Rf5 42.Kh4 Rf4 43.Kh3 Bf6 44.Rh6 Rf5 45.g4 Rf1 46.Re4 Rh1 47.Kg2 Rh6 48.a4 Kc7 49.b5 ab5 50.ab5 cb5 51.Re3 Kc6 52.Rg3 Kc5 53.g5 Bg5 54.Rg5 Kd5 55.Kf3 b4 56.Rg4 Kc5 57.Re4 Re6 58.Ke3 b5 59.Kd3 Rd6 60.Kc2 Rd5 61.Kb3 Rd3 62.Kb2 Rd5 63.Kb3 Rd3 64.Kc2 Rc3 65.Kb2 Kd5 66.Rb4 Rc5 67.Rb3 e4 68.Rc3 Rc3 69.Kc3 b4 70.Kb4 Kd4 71.Kb3 Kd3 White resigned 0-1. Plejade - The Bin Man (1630), ChessWorld.net, 2018.

4.e3 Bf5 5.c5 e6 (5...b6 6.Nf3 e6 7.Qa4 a5 8.b5 bc5) 6.Nf3 b6 7.Be2 a5 8.Qa4 Nbd7.

5.ba5 Ne4=.

5.ba5 e5 6.e3 Nbd7 7.Nf3 e4 8.Nfd2 Qa5.

5.ba5 e5 6.e3 Be7 7.Nf3 Nbd7 8.Bb2 (8.a6 ba6 9.Ne5 Ne5 10.de5 Ne4=+) 8...e4 9.Nfd2 Qa5 10.a4 (10.Bc3 Qa4=+) 10...b6 11.Bc3 Qa7 12.cb6 Qb6 13.Be2 0-0 14.a5 Qc7 15.0-0 Bd6 16.h3 Ba6 17.Ba6 Ra6 18.Na3 Rb8 19.Qe2 Raa8 20.Nc2 c5 21.dc5 (21.Rac1=+) 21...Bc5 (21...Qc5 22.Bf6 A) 22...gf6? 23.Qg4 Kh8 24.Qd7 Qc2 25.Qd6 (25.Qf7?! Be5 26.Rad1 Ra5=) 25...Qd2 26.Qf6 Kg8 27.Rfd1+-; B) < 22...Qc2 23.Rfc1 Qd3 24.Qd3 ed3 25.Bd4+=; C) 22...Nf6=) 22.Rfc1 Ne5 23.Rcb1 Bd6 24.Rb8 Rb8 25.Be5 Be5 26.Ra2 Qa7 27.a6 Nd7 28.f3 ef3 29.Qf3 Nf6 30.Qf5 Bc3 31.Nf1 Ra8 32.Qd3 Be5 33.Nd2 Rc8 34.Nf3 Qb6 35.Nce1 Bd6 36.Ra1 Bc5 37.Nc2 Qb2 38.Rf1 Ba7 39.Nfd4 Rc3 40.Qd1 Qa2 41.Qe2 h6 42.Ra1 ½-½. tired rook - marekt, ChessWorld.net, 2004.

5.b5 cb5 6.e3=+.

5.b5 b6 6.bc6 (6.e3 Bg4 7.f3 Bf5=) 6...Nc6 (6...bc5 7.Qa4 Qc7 8.dc5=+) 7.cb6 Qb6 8.e3 e5 9.de5 Ne5 10.Be2 Bb4 11.Bd2 d4 12.ed4 Qd4 13.Bb4 Qb4 (< 13...Qa1 14.Bc3 Qa2 15.Be5+/-) 14.Nd2 0-0 15.Ngf3 (better is 15.Rb1!? Qe7 16.Ngf3-/+) 15...Nf3-+ 16.Bf3? (16.gf3 Rd8-+) 16...Ba6 (better is 16...Re8 17.Kf1 Ba6 18.Kg1 Rad8-+) 17.Qb3 Qd4 (18.Rb1 Rae8 19.Kd1 Qf2-+) 0-1. 2good2be1 - marekt, ChessWorld.net, 2004.

4.Bb2 dc4 5.Bc4 e6=+.

4.c5 b6 5.Nf3 a5 6.Qa4 b5 7.Qb3 ab4 8.Qb4 Na6 9.Qa3 Ne4 10.d4 Bf5 11.Qb2 e6 12.Be2 Qa5 13.Nbd2 Qc3 14.0-0 Qb2 15.Bb2 Nd2 16.Nd2 Nb4 17.a3 Nc2 18.Rac1 Na3 19.Ba3 Ra3 20.Ra1 Rc3 21.Ra8 Ke7 22.Nf3 Bg4 23.Rfa1 b4 24.h3 Bf3-/+ 25.Bf3 g6 26.Rb8 Ra3 27.Rb1 Bg7 28.Rb7 Kf6 29.R1b4 Raa8 30.Rc7 Rhc8+= 31.Rbb7 Rc7 32.Rc7 Ra6 33.Be2+= Ra1 34.Bf1 e5 35.Rc6 Ke7 36.Rd6 ed4 37.ed4 Bd4 38.Rd5 Rd1 39.Rd6 ½–½. Argento1960 – marekt, ChessWorld.net, 2004.

4.Nf3 Qb6 5.Qb3 a5 6.b5 a4 7.Qc2 g6 8.Ba3 Bg7 9.Nc3 Bf5 10.d3 dc4-/+ 11.e4? cd3-+ 12.Bd3 Bd7?? 13.Rb1= cb5 14.Nb5+= Bb5 15.Bb5 Nc6 16.Ne5 Qa5 17.Ke2?? Qb5!-+ 18.Rb5 Nd4 19.Kd3 Nc2 20.Kc2 Rc8 21.Kd3-/+ 0-0?? 22.Be7+= 22...Rfe8 23.Rb7 Nh5 24.Nf3 Nf4= 25.Ke3 Ng2-/+ 26.Kd2 Bh6 27.Kd3 Nf4 28.Kd4 Ne6 29.Kd5 Bf8 30.Bf8 Kf8 31.Rhb1? Red8 32.Ke5 Kg7 33.R1b5 Rc5 34.Rc5 Nc5 (35.Rf7 Kf7-+) 0–1. Oraha,Z – Elieff,K, London, Canada, 1993.

4.Nf3 dc4 5.Bc4 b5 6.Be2=.

4.Nf3 e5 5.Ne5 Bb4 6.cd5 Nd5 7.Bb2 0-0 8.Qc2 Qg5 9.h4 Qe7 10.Nc4 g6 (10...Qd8 11.a3 Be7 12.Bd3+=) 11.Bd3 Rd8 12.a3 Bc5 13.Be4 Nf6 14.Nc3 Be6 (worse is 14...Ne4 15.Ne4 Bf5 16.Nf6 Kf8 17.Nh7 Ke8 18.Qc3+=) 15.d3 Bc4 (15...Ne4 16.Ne4 Nd7 17.Ne5 Ne5 18.Be5 Ba3 19.Nf6 Kf8 20.Nh7 Ke8 21.Bf6+/–) 16.dc4 Nbd7 (worse is 16...Ne4 17.Ne4 (17.Qe4?! Nd7=) 17...Nd7 18.Qc3+/– (worse is 18.Nc5 Nc5 19.h5 Nd3 20.Kf1 Nb2 21.Qb2 Rd3+=)) 17.Bf3 Ne5 18.Na4 Nf3 19.gf3 Bd4 20.0-0-0 Bb2 21.Kb2 b5 22.cb5 cb5 23.Nc3 b4 24.ab4 Rd1 25.Qd1 Rd8 26.Qa4 Rd2 27.Ka3 Rf2 28.Re1 Rf3 29.Qc6 Rg3 30.Qa4 (30.Qc5 Qe6 31.Qa7-+) 30...Rh3 31.Qc6 Rh4 32.e4 Kg7 (32...Rh5!? 33.Kb3-+) 33.Qc5 Qb7 34.b5 Rh3 35.Kb4 Rd3 36.Nd5 Nd5 37.ed5 Qb8 38.Kc4 Rd2 39.Kb3 Qb6 40.Qc3 Qd4 41.Qd4 Rd4 42.Re7 h5 43.Ra7 h4 44.b6 Rd5 45.Kc4 Rd8 46.Kc5 g5 (46...Rd2 47.b7 Rb2 48.Kc6=) 47.b7-/+ Rb8 48.Kc6 h3 49.Ra1 g4 50.Rh1 f5 51.Kc7 Rb7! 52.Kb7 f4 53.Kc6 (53.Ka6 g3 54.Rh3 g2-+) 53...g3 54.Kd5 g2 55.Rh3 0–1. Wlasow,Andrey (2220) – Niewold,Jaap (1685), IECG, 2006.

4.Nf3 Bf5 5.d4 Nbd7 6.Qb3 e6 7.c5 Qc7 8.Nc3 e5 9.de5 Ne5 10.Ne5 Qe5 11.Bb2 Qc7 12.Be2 Be7 13.0-0 0-0 14.Rfe1 Ng4 15.g3 Bf6 16.Rad1 Rfe8 17.Bf3 Ne5 18.Bg2 Nd3 19.Rf1 Nb2 20.Qb2 Qe5 21.Rc1 h5 22.Qd2 h4 23.Ne2 h3 24.Bf3 g5 25.Nd4= Be4 26.Bg4 Kg7 27.f3 Bg6 28.Rce1 Rh8 29.Qf2 Bd3=+ 30.f4 gf4-/+ 31.gf4 Qe7 32.Rd1 Be4 33.Bf3 Rag8 34.Kh1 Kf8 35.Rg1 Rg1 36.Rg1 Bd4 37.ed4 Bf3 38.Qf3=+ Qe4 39.Qe4 de4 40.Rg4 Rh5 41.Rg5? Rh4 42.Kg1 Rf4 43.d5? cd5 44.Rd5 Ke7 45.Rd4 f5-+ 46.b5 Rf3 47.Ra4 e3 48.Ra3 e2 49.Rf3 e1Q 50.Rf1 Qe3 51.Rf2 Qc5 52.a4 Kf6 53.a5 Qb5 54.a6 Qa6 55.Rd2-+ Qc6 56.Kf1 Qg2! 57.Rg2 hg2 58.Kg2 a5 59.Kf2 b5 60.Ke2 a4 61.Kd3 a3 62.Kc3 b4! 63.Kb3 f4 64.h4 f3 65.h5 f2 (66.h6 f1Q-+) 0–1. Szewczak,Andrzej – Tsatsorin,Sergey (2280), Polanica Zdroj op, 1996.

4.Nf3 Bg4 5.a3 Nbd7 6.cd5 Nd5 7.Bb2 e5 8.Be2 Bd6 9.Nc3 Nc3 10.Bc3 0-0 11.0-0 f5 12.Ne1 Qh4 13.Bg4 fg4 14.g3 Qh3 15.f4 Rf6 16.Nd3 Rh6 17.Qe2 e4=+ 18.Ne5 Be5 19.fe5 Qh5 20.Rf4 Ne5 21.Be5 Qe5 22.Raf1 Qe6 23.Rg4 Rf8 24.Rgf4 Rhf6 25.d3 (25.Rf6 Rf6 26.Rf6 gf6=) ½–½. Gapp,Wolfgang (1825) – Sucher,Johannes (2100), AUT–chT, 1995.

4.a3 d5 5.c5 a5 6.Bb2 ab4 7.ab4 Ra1 8.Ba1 b6 9.d4 Be7 10.Qa4 Qc7 11.Nf3 Nbd7 12.Bd3 0-0 13.0-0 Bb7 14.Qc2 Ra8 15.Nbd2 Ba6 16.Ba6 Ra6 17.Bb2 Qa7 18.b5 cb5 19.c6 Qc7 20.Rc1 Nb8 21.Ne5 Ne8 22.e4 Nd6 23.ed5 ed5 24.Qb3 Nc4 25.Ndc4 bc4 26.Qb5?? Ra5-+ (27.Qa5 ba5 28.Nc4 dc4-+) 0–1. Huelle,Gunter – Napierala,Dieter, Leipzig VfB op 5th, 1998.

4.b5 b6 5.a4 Bb7 (5...a6 6.Bb2 Be7 7.Nf3 0-0 8.Qc2 d6 9.Bf6 Bf6 10.d4 h6=; 5...Be7 6.d4 a6 7.Nf3 ab5 8.cb5 0-0 9.Ba3 Bb7 10.Bd3 d6=; 5...d5 6.d4 a6 7.Ba3 dc4 8.Bf8 Rf8 9.bc6 Nc6 10.Bc4 e5=) 6.Nf3 Be7 (6...a6 7.d4 ab5 8.cb5 Be7 9.Bd3 cb5 10.Bb5 0-0=) 7.Be2 (7.d4 a6 8.Bd3 ab5 9.cb5 cb5 10.Bb5 0-0=) 7...0-0 (7...a6 8.Ba3 0-0 9.0-0 d5 10.d4 dc4=) 8.0-0 c5 (8...a6 9.Ba3 d5 10.d4 dc4=) 9.d4 (9.Bb2 d5 10.d4 Nbd7=) 9...d5 (9...a6 10.Bb2 d5=) 10.dc5 (10.cd5 Nd5=) 10...Bc5 11.Nbd2 Nbd7 12.Bb2 Qe7 13.Qc2 Rac8 14.Rfc1 Bd6 15.Qd1 Rfd8 16.a5 Rc7 17.a6 Ba8 18.cd5 Bd5 19.Rc7 Bc7 20.Ba3 Nc5 21.Qc2 Bd6 22.Bc5 Bc5 (worse is 22...bc5 23.e4 e5 24.ed5+/–) 23.g3 h6 24.Ne5 Qc7 25.Ng4 (25.Nd3 e5=) 25...Ng4+= 26.Bg4 Qe5 27.Ra4 (better is 27.Rd1=) 27...Ba8 28.Bf3 Rd2! (28...Rd2 29.Qd2 Bf3 30.Qd8 Bf8-+) 0–1. Kamaletdinov,Farit – Garmashev,Leonid, Belorechensk Russia, Open, 2013.

4.b5 b6 5.Nc3 Bb7 (5...d5 6.Bb2 Bd6 7.bc6 Nc6 8.cd5 ed5 9.Rc1 Bd7 10.Nb5 Bb8=; 5...a6 6.Nf3 ab5 7.cb5 Bb7 8.Be2 Bb4 9.Bb2 0-0 10.a3 Bc3=; 5...Bd6 6.Nf3 cb5 7.Nb5 Be7 8.d4 Bb7 9.Bd3 Nc6 10.0-0 Nb4=) 6.Nf3 a6 7.Be2 d5 8.cd5 Nd5 9.Nd5 Qd5 10.ba6 Ba6=.

4.b5 b6 5.d4 cb5 (5...d5 6.Nf3 a6 7.bc6 Nc6 8.Ba3 Ba3 9.Na3 0-0 10.Bd3 Qd6=; 5...Bb7 6.Nf3 a6 7.Bd3 d5 8.cd5 Nd5 9.bc6 Nc6 10.0-0 Rc8=; 5...a6 6.Nf3 d5 7.bc6 Nc6 8.Ba3 Ba3 9.Na3 dc4 10.Nc4 b5=) 6.cb5 Bb7 7.Nf3 a6 8.Bd3 ab5 9.Bb5 Be7 10.0-0 0-0=.

4.b5 b6 5.Nf3 cb5 (5...Bb7 6.d4 a6 7.Bd3 ab5 8.cb5 cb5 9.0-0 b4 10.Nbd2 Be7=; 5...d5 6.cd5 ed5 7.bc6 Nc6 8.Bb2 Bd6 9.Bb5 Bd7 10.Bf6 Qf6=; 5...a6 6.d4 d5 7.bc6 Nc6 8.Ba3 Ba3 9.Na3 0-0 10.Bd3 Qd6=) 6.cb5 a6 7.d4 Bb7 8.Bd3 ab5 9.0-0 b4 10.Nbd2 d5=.

4.b5 d5 A) 5.Nf3 Bd7 (5...dc4 6.Bc4 cb5 7.Bb5 Bd7 8.Qb3 Bb5 9.Qb5 Qd7 10.Nc3 Nc6=; 5...a6 6.bc6 Nc6 7.d4 dc4 8.Bc4 b5 9.Be2 Be7 10.a4 b4+=; 5...Bd6 6.d4 dc4 7.Bc4 0-0 8.0-0 a6 9.ba6 b6 10.Ba3 Ba6=) 6.Nc3 dc4 7.Bc4 cb5 8.Nb5 a6 9.Nbd4 Bd6 10.d3 b5+=; B) 5.Bb2 a6 (5...dc4 6.Bc4 cb5 7.Bb5 Bd7 8.Qb3 Nc6 9.Nf3 Rc8 10.0-0 a6+=; 5...cb5 6.cd5 Nd5 7.Bb5 Bd7 8.Bc4 Nb6 9.Bb3 Nc6 10.Nf3 Bd6+=; 5...Bd6 6.Nf3 0-0 7.Nc3 a6 8.bc6 Nc6 9.cd5 ed5 10.Be2 Bf5+=) 6.bc6 Nc6 7.Nf3 dc4 8.Bc4 Bd6 9.0-0 b5 10.Be2 0-0+=; C) 5.d4 Ne4 (5...cb5 6.cb5 Ne4 7.Bd3 Bd7 8.Ne2 a6 9.ba6 Na6 10.0-0 Nb4=; 5...dc4 6.Bc4 Bd7 7.a4 Bb4 8.Bd2 Bd6 9.Nf3 0-0 10.0-0 a6=; 5...Be7 6.Nf3 0-0 7.a4 a6 8.Ba3 Qa5 9.Nfd2 Re8 10.Bd3 dc4=) 6.Nf3 dc4 7.Bc4 Qa5 8.Nbd2 Nd6 9.Qb3 Nc4 10.Qc4 Qb5+=.

4.Bb2 Bg7 5.Nf3 d6 6.d4 0-0 7.Be2 Nbd7 8.Nbd2 Qb6 9.a3 a5 10.c5 dc5 11.Nc4 Qc7 12.bc5 b5 13.cb6 Nb6 14.0-0 Ne4 15.Qc2 Nc4 16.Bc4 Nd6 17.Bd3 Be6 18.Rfc1 Rfc8 19.h3 a4 20.Qe2 Nb7 21.Ng5 Na5 22.Ne6+– fe6 23.Rc2 Nb3 24.Rd1 Kh8 25.Be4 Qd6 26.Bf3 Bf6 27.Qc4 Kg7 28.e4 Qd7 29.e5 Bg5 30.Bg4 Qd5 31.Be6 Qc4 32.Bc4 Rab8 33.g3 h5 34.f4 Bh6 35.Be6 Rc7 36.d5 c5 37.d6 Ra7 38.d7 Rd8 39.Bb3 ab3 40.Rc5 e6 41.Rc6 Kf7 42.Rcd6 h4 43.Kg2 Rc7? 44.R1d2 Rc4 45.R6d4 Rd4 46.Rd4 Ke7 47.gh4 Rd7+/– 48.Rd7 Kd7 49.Kf3 Kc6 50.Ke4 Kb5 51.h5 gh5 52.f5 ef5 53.Kf5 h4? 54.e6 Kc6 55.Kf6 Bf8 56.e7 Be7 57.Ke7 Kd5 58.Kf6 (58...Ke4 59.Kg5+–) 1–0. Zielke,Bernd – Floris,Richard, Kiel op, 2000.

4.Nc3 Bg7 5.a4 (5.Nf3!?=) 5...d5+= 6.c5 (6.Nf3 Na6+=) 6...a5 7.b5 Ne4 8.Ra3? (8.Bb2 Nd7 9.Rc1 Nec5-/+) 8...Nc5 (better is 8...Nc3!? 9.Rc3 Bc3 10.dc3 0-0-+) 9.d4-/+ Ncd7 (9...Ne4 10.Bd3+=) 10.f4 (10.Nf3 e5+=) 10...Nf6-/+ 11.Nf3 Bg4 (11...cb5 12.Bb5 Nc6 13.0-0-/+) 12.Be2 (12.h3 Bf5+=) 12...Nbd7 (12...cb5 13.Nb5 Nc6 14.Ne5-/+) 13.0-0 0-0 14.Qc2 (14.bc6!? bc6 15.h3 Bf3 16.Rf3+=) 14...c5-/+ 15.dc5 (15.Bb2 Qb6-/+) 15...Nc5-+ 16.h3 Bf5 17.Qa2 Nce4 (17...Rc8 18.Nd4-+) 18.Nd4 Nc3 (18...Rc8 19.Ne4 Ne4 20.Nf5 gf5 21.Bf3-+) 19.Rc3-/+ Ne4 20.Ra3 (20.Rd3 Bd4 21.Rd4 Nc3-/+) 20...Rc8-+ 21.Nf5 gf5 22.Bf3 e6 23.Rd3 Qb6 0–1. Radwan,Jan (1660) – Shishkin,Vadim (2460), I Laur Tatr Poland, 2012.

4.Nf3 Bg7 5.Qb3 b6 (5...d6 6.Be2=) 6.Bb2 d6 (6...0-0 7.Be2=) 7.Ng5 (7.d4 0-0=) 7...c5 (7...0-0 8.d4=) 8.bc5 (8.Ne4 Nbd7=) 8...bc5=+ 9.d4 (9.Ne4 Nbd7=+) 9...Nbd7 10.Bd3 (10.Qa3 Rb8=+) 10...Rb8 (better is 10...cd4!? 11.Qa4 de3 12.fe3 0-0-+) 11.Qa3=+ a6 (11...cd4 12.Bd4 Nc5 13.Nd2=+) 12.dc5 (better is 12.0-0!?=) 12...Nc5-/+ 13.Nd2?? (13.Bc2 0-0 14.Bd4 Qc7-/+) 13...0-0 (better is 13...Rb2!? 14.Ngf3-+) 14.0-0?? (better is 14.Bd4-/+) 14...Nd3-+ 15.Qd3 Rb2 16.a4 Qa5 17.Ndf3 Bf5 18.e4 Bg4 19.e5 de5 20.Ne5 Be2 21.Qd4 Bf1 22.Qb2 Ng4! 23.Rf1 Be5 24.Qe2 Bh2 25.Kh1 Qg5 26.f3 Ne3 27.Re1 Qh6 28.c5 Bg3 29.Kg1 Qh2# 0–1. alanwsp (1845) – dmarsh (1880), net–chess.com, 2005.

4.Bb2 e6 5.a3 (5.Qb3 dc4 6.Qc4 Be7 7.Nc3 b5 8.Qf4 Qd6 5.Qb3; 5.c5 b6+=) 5...dc4 6.e3 b5 7.d3 cd3 8.Bd3 a5 9.ba5 Nbd7 10.0-0 Qa5 11.Nbd2 Be7 Black prepares b4 12.Qb1 0-0 13.Rc1 Bb7 14.a4 b4 15.Nc4 Qc7 (15...Qh5 16.a5-/+) 16.e4 g6 17.a5 Rfd8 18.Nfe5 (18.Qc2 Ba6+=) 18...Nc5 19.Qc2 Ba6 20.f3 (20.Rd1 Rab8-/+) 20...b3 21.Qc3 Bc4 (better is 21...Nd3!? 22.Nd3 Bc4 23.Qc4 Ra5 24.Qb3 Qa7 25.Kh1 Ra1 26.Ra1 Qb8 27.Qb8 Rb8-/+) 22.Bc4= Nce4 23.fe4 Ne4 24.Qe1 (24.Qb3 Qa7 25.Qb6 Bc5 26.Kh1 Bb6 27.Nc6 Nf2 28.Kg1 Ng4 29.Kh1 Qc7-+) 24...Bc5 25.Kf1 Nd2 26.Ke2 Bd4 (26...Bd4 27.Nf7 Kf7 (worse is 27...Qf7 28.Bd4 Rd4 29.Bd3 Rd3 30.Kd3 Rd8 31.Ke2-+) 28.Bd4 Rd4 29.Qf2 Rf4 30.Be6 Ke6-+; 26...Ra5 27.Ra5 Qa5 28.Nc6+/–; worse is 26...Nc4 27.Rc4 (27.Nc4? Qh2 28.Ne3 Qh5 29.Kf1 Rd3 30.Rc5 Qc5-+) 27...Bd4 28.Bd4 Rd4 29.Rd4 Qe5 30.Kd3 Qb5 31.Kc3 Ra5 32.Kb2 Ra1 33.Qa1+= (33.Ka1?? Qa6 34.Kb2 Qa2 35.Kc3 Qc2 36.Kb4 c5 37.Kb5 cd4-+)) 0–1. Parmet,Daniel (1640) – Trokenheim,Marek (1800), FICGS, 2008. (=1.c4 Nf6 2.b4 c6 3.Nf3 d5)

4.cd5 cd5 5.e3 Bg4 6.Bb2 e6 7.Bd3 Be7 8.0-0 0-0 9.h3 Bh5 10.g4 Bg6 11.Bg6 fg6 12.Kg2 Ne4 13.Rh1 Rf3 14.Qf3 Nd7 15.d3 Ng5 16.Qf4 Qb6 17.a3 Rf8 18.Nd2 Rf4 19.ef4 Nf7 20.h4 Bf6 21.g5 Bb2 22.Rab1 Ba3 23.Nf3 d4 24.h5 gh5 25.Rh5 g6 26.Rh3 Nd6 27.Rbh1 Nf8 28.Nh4 Qc6 29.f3 Qc2 30.Kg3 Qd3 31.Ng2 Nf5 32.Kg4 Ne3 33.Kg3 Ng2 34.Kg2 Bb4 35.Kg3 Bd6 36.Rh6 Qf5 37.Rc1 Qg5 0–1. saetta – Sought, ICS, 1999.

4.cd5 cd5 5.e3 Bg4 6.Be2 e6 7.a3 Bd6 8.d4 Nbd7 9.0-0 0-0 10.Nbd2 Rc8 11.h3 Bf5 12.Bb2 Nb6 13.Ne1 (13.Rc1 Rc1 14.Bc1 Ne4=+) 13...Nc4-/+ 14.Nc4 dc4 (< 14...Rc4 15.Bc4 dc4 16.Qc1+=) 15.Bc3 b5 16.Bf3 Nd5 17.Bd5 ed5 18.Nf3 Re8 19.Qd2 Be4 20.Qd1 Bc7 (20...Qf6 21.a4-/+) 21.Nd2 (21.a4!?-/+) 21...Qd6-+ 22.f4 Bf5 23.Re1 Re7 24.a4 Rce8 25.Nf1 Bd3 26.ab5 Bf1 27.Kf1 Re3 28.Re3 (better is 28.Kg1!?-+) 28...Re3 29.Be1 Qf4 30.Bf2 Bb6 31.Kg1 Rd3 (31...Bd4 32.Ra6 Rd3 33.Qc2-+) 32.Qe1 h6 33.Qe8 (33.g3 Qe4 34.Qe4 de4-+) 33…Kh7 (34.Rf1 Bd4 35.Bd4 Qd4 36.Kh2 f6-+) 0–1. Argento1960 – schaep1, ChessWorld.net, 2004.

4.cd5 Nd5 5.a3 Bg4 6.e3 e5 7.Be2 (7.h3 Bf3 8.Qf3 Bd6=) 7...Nd7 8.Bb2 Bd6 9.Nc3 0-0 10.h3 Bf5 (10...Bh5 11.Ne4 Bc7 12.Ng3=+) 11.Qb3?? (better is 11.e4 Nf4 12.ef5 Ng2 13.Kf1+/–) 11...Be6=+ 12.Qc2 Rc8 (12...f5!?=+) 13.Ne4= Bf5 14.Bd3 Be4 15.Be4 N7f6 16.Bd3 c5= 17.b5 c4 18.Bc4 e4 19.Ng5 Nb6 20.Nf7 Rc4-/+ 21.Qc4 Nc4 22.Nd8 Nb2 23.Nb7=+ Nd3 24.Ke2 Be5 25.Rab1 Nh5 26.Rhf1 Rf2 27.Rf2 Ng3 28.Kd1 Nf2 29.Kc2 Nd3 30.Na5 Bc7 31.Nc6+– Bb6 32.a4 Nf5 33.a5 Bc5 34.b6 ab6 35.a6 b5 36.a7 Ba7 37.Na7 b4 38.Nc6 Nh4 39.Nb4 Ne5 40.g3 Nf5 41.g4 Nd6 42.d3 Kf7 43.de4 Ne4 44.Nd5 Kg6 45.Nf4 Kf6 46.Nh5 Kg6 47.Rb6 Nf6 48.Nf6 gf6 49.Kd1 Nf3 50.Rb5 Ng5 51.h4 Nf3 52.Ke2 Ne5 53.Re5 fe5 54.Kd3 h5 55.gh5 Kh5 56.Ke4 (56.Ke4 Kh4 57.Ke5+–) 1–0. Weber,Bernd – Krug,Peter, DDR–ch U18 Eisenach, 1956.

4.e3 Bg4 5.b5 e5 (5...Nbd7 6.bc6 bc6 7.Nc3=) 6.Be2 (6.cd5 cd5 7.h3 Bf3 8.gf3 Nbd7+=) 6...Bd6 7.0-0 (7.Nc3 0-0 8.bc6 bc6+= (worse is 8...Nc6 9.cd5 Ne7 10.e4+=)) 7...dc4+= 8.Nc3 (8.Bc4? e4 9.h3 A) 9...ef3?! 10.hg4 h5 11.gh5+= (11.Qf3?? hg4 12.Qe2 Bh2 13.Kh1 Qe7-+); B) 9...Bh5-+) 8...0-0 9.h3 Bf3 10.Bf3 Bb4 (10...Qe7 11.Qc2 a6 12.bc6 Nc6 13.Bc6 bc6 14.Na4+=) 11.Qc2 (11.Qa4 Qa5 12.Qa5 Ba5=) 11...Qd3 (11...a6 12.Rb1 Bc3 13.bc6 Nc6 14.dc3+=) 12.Qd3 cd3 13.Ne4 Nd5 (13...cb5? 14.Nf6 gf6 15.Bb7+–) 14.Ng3 Nd7 15.Rb1 Be7 16.bc6 bc6 17.Be4 (17.Bb2!?=) 17...Nc5+= 18.Bd5 cd5 19.Nf5 Bf6 20.Ba3 Rfc8 21.f3 Na4 22.Rfc1 (22.Rb3!?+=) 22...Rc2-/+ 23.Rc2 (23.Rb7 Nb6 (worse is 23...Rd2 24.Ra7 Rd8 25.Ra4+=) 24.Rc2 dc2-/+) 23...dc2-+ 24.Rc1 Rc8 25.Kf2 g6 26.Be7 gf5 (better is 26...Bg7!? 27.Ng7 Kg7-+) 27.Bf6+= Nc5 28.Ke2 Nd7 29.Bh4 Rc4 30.Bf2 Nc5 31.d4 ed4 32.ed4 Ne6 33.Kd2 Nd4 34.Bd4? (better is 34.Kd3!? Ne6 35.Ba7 Nf4 36.Kd2 Ng2 37.Rc2+=) 34...Rd4-+ 35.Ke3 Rc4 36.Kd3?? (36.f4 Kg7-+) 36...Kg7 (36...f4 37.Kd2-+) 37.Rc2?? (better is 37.f4-+) 37...Rc2 38.Kc2 f4 39.Kd3 Kf6 40.Kd4 Ke6 41.a3 (41.Kc3 Kd6 42.Kd4-+) 41...a5 42.h4 (42.Kd3 Ke5 43.Kc3 d4 44.Kc2 Kd5-+) 42...h5 43.Kc3 Ke5 44.Kd3 d4 45.Kc2 Kd5 46.Kd3 a4 47.Ke2 Kc4 48.Kd2 d3 49.Ke1 (49.g3 fg3 50.Ke3 Kc3 51.f4 d2 52.Ke2 Kc2 53.Ke3 d1Q 54.f5 Qg4 55.f6 g2 56.Kf2 g1Q) 49...Kc3 50.Kf2 (50.g3 fg3 51.Kf1 d2 52.Kg2 d1Q 53.Kg3 Qg1 54.Kh3 Kd4 55.f4 Ke4 56.f5 Kf4 57.f6 Qg3) 50...d2 (50...d2 51.g3 fg3 52.Kg3 d1Q 53.Kg2 Qe2 54.Kh3 Kd4 55.Kg3 Ke3 56.Kh3 Kf2 57.Kh2 Qf1 58.f4 Qg2) 0–1. DEFFM – GuestMLJK, freechess.org, 2018.

4.a3 a5 5.ba5 d5 6.e3=.

4.a3 d5 5.e3 Nbd7 6.d4 a6 (6...Bd6 7.Nbd2=) 7.c5+= b5 (7...Qc7 8.Be2+=) 8.a4 Bb7 9.Bd3 g6 10.0-0 Bg7 11.Nc3 0-0 12.Bb2 Re8 13.Re1 e5 (13...ba4 14.Qa4 Rb8 15.Reb1+/-) 14.Ne5 Ne5 15.de5 Nd7 16.ab5 cb5 (16...ab5!? 17.Ra8 Ba8+/-) 17.f4+- Re6 (17...f6 18.e6! Nf8 19.f5+-) 18.Rc1 f6 19.e4 de4 (19...d4 20.Qb3 Qe8 21.Nd5+-) 20.Be4 Be4 21.Ne4 (21.Re4?! fe5 22.Qb3 Qe8+-) 21...fe5 22.Qb3 Qe8 (22...Qe7 23.Ng5 Re8 24.Ne6 Qe6 25.Qe6 Re6 26.c6+-) 23.Ng5 Nf8 24.Be5 Kh8 (24...Bh6 25.Ba1 Bg5 26.fg5 Qe7+-) 25.Bg7 Kg7 26.Ne6 Ne6 27.Re6 (27.Re6 Qf8 28.Qe3+-) 1-0. marekt (2465) - Haroldlee123 (1755), ChessWorld.net, 2013. (=1.c4 Nf6 2.b4 c6)

4.a3 Be7 5.e3 (5.d4 a5=) 5...b6 (5...a5 6.ba5 Qa5 7.Bb2=) 6.Bb2 (6.d4 d5=) 6...Bb7 (6...0-0 7.Bd3=) 7.Be2 d5 (7...a5 8.ba5 Ra5 9.Bc3=) 8.0-0 (8.cd5 Nd5 9.0-0 0-0=) 8...0-0 9.Qc2 (9.cd5 Nd5 10.d4 a5=) 9...Nbd7 (9...dc4 10.Bc4 (10.Qc4? Ba6 11.Qa6 Na6 12.Ba6 c5-+) 10...a5 11.ba5 Ra5 12.d4=) 10.d3 (10.cd5 cd5 11.Rc1 Rc8=) 10...Rc8 (10...a5 11.cd5 Nd5 12.ba5 Ra5 13.Nc3=) 11.Nbd2 (11.Nc3 e5=) 11...Qc7 (11...a6 12.d4=) 12.h3 (12.Qa4 a6=) 12...Rfe8 (12...Rfd8 13.Qa4=) 13.d4 (13.Qa4 a6=) 13...Bf8 (13...c5 14.bc5 bc5 15.cd5 Bd5 16.Rfc1=) 14.Bd3+= g6 (14...Be7 15.c5+=) 15.e4 (15.c5!?+=) 15...de4= 16.Ne4 (16.Be4 Ne4 17.Ne4 c5 18.dc5 bc5=) 16...Ne4 17.Be4 Bg7 (17...f5 18.Bd3 c5 19.dc5 Bf3 20.gf3 bc5 21.Qd2=+) 18.Rae1 (18.Qe2 f5 19.Bb1 c5=+) 18...Nf6 (18...f5 19.Bd3 c5 20.Qe2=+) 19.Bd3= Nd7 (19...c5 20.dc5 Bf3 21.cb6 ab6 22.gf3=) 20.Ne5 (20.c5 Rcd8+=) 20...c5= 21.Nd7 (21.f4 cd4 22.Bd4 Red8=) 21...cd4 22.Nb6= ab6 23.f4 Ba6 24.Rc1 e5 25.fe5 Be5 26.c5 Bd3 27.Qd3 Bf4?? 28.Rc4?? Be3+= 29.Kh1 b5? 30.Rd4+- f5?? 31.Rd7 Qc6 32.Rg7 Kf8 33.Rf5!! (33...Qf6 34.Qd6 Kg7 35.Qf6 Kg8 36.Qf7) 1-0. Arcon (1670) - Gauner (2840), FRA-ch accession, 1996.

4.Qb3 d5=.

4.b5 Be7 5.e3 0-0 6.Nc3 e5 (6...d5 7.d4+=) 7.d3 (7.Ne5 d6 8.Nf3 Bg4+=) 7...Bd6 8.Qc2 Qe7 9.a4 a5 10.b6 (10.Be2!?=) 10...e4 (better is 10...Bb4+=) 11.Nd2. De Visser,Arnold W - Etmans,Maarten D, NED-ch fin corr, 1989.

3.b5 Na5 4.d3 a6 5.Na3 (5.Nf3 ab5 6.cb5 d5=) 5...e5=+ 6.Nf3 (6.Nc2 ab5 7.cb5 d5-/+) 6...Bc5 (better 6...Bb4 7.Nd2 ab5 8.cb5 d5-/+) 7.Be3?? (7.Nc2 e4 8.Nd2 ab5 9.cb5 d5=+) 7...Qe7 (better 7...Ba3 8.b6 Nc6-+) 8.Nc2 (8.Bc5 Qc5 9.Qa4 b6=+) 8...ab5-/+ 9.cb5 0-0 (9...Be3 10.fe3 d5 11.g3-/+) 10.g3 (10.d4 ed4 11.Bd4 Ne4=+) 10...b6 (10...Be3!? 11.fe3 Qc5-/+) 11.Bg2=+ Bb7 Black prepares e4 12.0-0 Be3 13.Ne3 e4 14.de4 Ne4 15.Nd4 g6 (15...Rfe8 16.Ndf5 Qe5 17.Qd3= (17.Qd7? Rad8 18.Nh6 gh6 19.Qg4 Kh8-+)) 16.Rc1 Rac8 (16...c5 17.bc6 dc6 18.Qd3=) 17.Qc2 Nf2? (better 17...Rfe8=) 18.Kf2+- Rce8 (18...Bg2 19.Ng2 c5 20.bc6 dc6 21.a4+-) 19.Qc3 (better 19.Qd3 Bg2 20.Ng2 Rc8+-) 19...f5? (19...Bg2 20.Ng2 c5 21.bc6 dc6+-) 20.Bb7 Nb7 21.Nd5 (21.Nd5 Qe4 22.Nc7+-) 1-0. Yuriy_loginname (2365) - vowa1990 (2315), Rated Classical game, lichess.org, 2016.

4.e3 d5 5.cd5 Nd5 6.b5=.

4.e3 Bd6 5.Qc2 (5.Bb2 a6=) 5...0-0 6.Be2 (6.Bb2 a6=) 6...e4 (6...b6 7.d3=) 7.Bb2 Re8 8.d4 ed3 9.Bd3 (9.Qd3 Be5 10.Nc3 d6=) 9...Ne5 (9...a5 10.b5 Ne5 11.Bf5=) 10.Bf5 g6 (10...c5 11.bc5 Bc5 12.Be5 Re5 13.Nf3 Qa5 14.Kd1+=) 11.Bh3 c5 (11...a5 12.c5 Bf8 13.Nd2=) 12.b5 (12.bc5 Bc5 13.Be5 Re5=) 12...b6 (12...Bc7 13.Nd2+=) 13.Ne2 (13.Nd2 a6=) 13...Neg4 (13...Bb7 14.Nd2=) 14.Nd2 Bh2 (14...a6=) 15.Nf3 (15.g3!? Bb7 16.Qc3 Bh1 17.Bg4+/–) 15...Bc7= 16.Qc3? (better is 16.Rd1=) 16...Nf2!-+ 17.Rf1 (17.Kf2 Decoy theme: f2 17...Ne4 Theme: Double Attack) 17...N2e4 18.Qc2 (18.Qd3 a6-+) 18...Bb7 (better is 18...a6 19.ba6 Ba6 20.Nd2-+) 19.Nfg1 (19.Rd1-+) 19...Ng4! 20.0-0-0 Ne3 21.Rd7 Nc2 22.Rff7 Qg5 23.Kb1 Nd2 24.Ka2 Qh4 25.Rg7+– Kh8 26.Rh7 Kg8 27.Rh4 Be5 28.Rb7 Bb2 29.Kb2 Ne3 30.Rhh7 Nec4 31.Ka2 Nd6?? 32.Rbd7 Nf5 33.Bg4 a5 34.a4 Re4 35.Bf5 Ra4 36.Kb2 Rb4? 37.Kc2 gf5 38.Rh3 a4?? 39.Ra3 Ra5?? (39...Ra5 40.Rd2 Rab5+–; better is 39...Nc4 40.Rg3 Kf8+/–). Crow,Dave – Lokasoft, Lokasoft, 2003.

4.e3 Be7 5.Bb2 d5 (5...d6 6.b5 Nb8 7.d4 ed4 8.Bd4=) 6.c5 a5 (6...a6 7.Nf3 e4 8.Ne5+=) 7.b5= Nb8 8.Be5 Bc5 (8...Nbd7 9.d4 Ne5 10.de5=) 9.Qc2 (9.d4 Bd6=) 9...Nbd7 10.Bb2 (10.Bg3 d4=) 10...0-0 11.Nf3 Re8 12.Be2 b6 (12...Bd6 13.0-0=) 13.0-0+= Bb7 14.d3 (14.Nd4 Rc8+=) 14...Ng4 (14...Rc8 15.Nd4=) 15.h3 (15.Nbd2 Qe7 16.d4 Bd6+=) 15...Ngf6 16.Nbd2 (16.Nd4 Rc8+=) 16...Bd6 17.Nb3 (17.Nd4 Rc8+=) 17...a4 (17...Rc8 18.Nbd4=) 18.Nbd4+= Bc5 (18...Nc5 19.Nf5+=) 19.Rac1 (19.Rfc1 Nb8+/–) 19...Qe7 (19...Nb8 20.Nf5+=) 20.Qc3+/– Qd6 (20...Rec8 21.Rb1+=) 21.Nc6 (21.Nf5 Qf8+/–) 21...Bc6 (21...Qf8 22.Nfd4+=) 22.bc6 Nb8 (22...Re3 23.fe3 Be3 24.Kh1+/–) 23.d4 Ne4 24.Qd3 (24.dc5 Nc3 25.cd6 Ne2 26.Kh2 Nc1 27.Rc1 cd6+=) 24...Qf6 25.dc5 (25.Qb5 Bd6 26.Qd5 Ra5+/–) 25...Qb2 26.cb6 (better is 26.Rc2 Qb3 27.cb6 Qb6 28.Qd5+/–) 26...cb6? (26...Qb6 27.Qd5 Ra5 28.Qd4+/–) 27.Rb1 (27.c7!? Nc5 28.Rc2 Qb3 29.cb8Q Nd3+–) 27...Qa2 (27...Qf6 A) worse is 28.Qd5 Nc3 29.Qc4 Nb1 (worse is 29...Qc6 30.Rbc1 Ne2 31.Qe2+=; 29...Nc6?! 30.Rbc1 Ne2 31.Qe2=) 30.Rb1 Nc6+=; B) 28.Rb6 Nc6 29.Qd5+/–) 28.Rb6 (better is 28.Nd4+–) 28...Nc3? (28...Nc5 29.Qd2 Qa3 30.Qd5+–) 29.Nd4 (better is 29.Qc3 Qe2 30.Re1+–) 29...Qa3+/– 30.c7 Nd7= 31.Rc6 Ne2 32.Qe2 Rac8 33.Nf5 Ne5+= 34.Rc2 Qb4 (34...Qb4 35.Ra1 g6=; 34...Nc4 35.Qg4 g6 36.Ra2=). Sternik,Ryszard – Mephisto Exclusive, Olsztyn Poland, 1994.

4.e3 d5 5.cd5 Qd5 6.d4 A) 6...Ng6 7.Nc3 (7.Nf3 e5 8.de5 Qd1 9.Kd1 Ng4=) 7...Qd6 8.a4 Qd8 9.Nf3+=; B) 6...Ned7 7.Nc3 (7.Ba3 e5 8.Nc3 Qe6 9.Bf8=) 7...Qd6 8.Nf3 e5 9.Bb2+=.

4.e3 d5 5.cd5 Bf5 6.d4 Ned7 (6...Ng6 7.Nf3 (7.Nd2 Qd5 8.Ngf3 e6 9.Bc4=; 7.f3= Bb1 8.Rb1 Nd5 9.Bd2=) 7...Qd5 8.Nc3 Qd6 9.Ng5=) 7.Nf3 (7.Nc3 Nb6+= 8.f3 Nfd5 9.Nd5+/–; 7.Qb3 Nb6 8.f3 Bb1 9.Rb1+=; 7.a3 Nb6 8.f3 Bb1 9.Rb1+=) 7...Nd5= 8.Bd3 Bd3 9.Qd3 e6 10.0-0 a6 11.Ba3 (11.ba6 Ra6 12.e4 N5f6=) 11...ab5 (11...Ba3 12.Na3 0-0 13.Rfb1=) 12.Bf8+= Kf8 (12...Rf8 13.Qb5 Ra7 14.Rc1+=) 13.Qb5 g6 (better is 13...N7b6!?+=) 14.Qb7+/– c5 15.e4 (better is 15.Rc1!? cd4 16.Nd4+/–) 15...Nb4+= 16.Nc3 (16.a3 Rb8 17.Qa7 Ra8 18.ab4 Ra7 19.Ra7 cb4=) 16...Rb8= 17.Qa7 Ra8 18.Qb7 Rb8 ½–½. Cridland,Graham – Inving,Yugi, FICGS, 2008. (=1.c4 Nf6 2.b4 Nc6)

4.e3 d5 5.cd5 Ng6 A) 6.Nf3 A1) 6...Nd5 7.d4 (7.Bb2 Bg4 8.h3 Bf5 9.d3) 7...Bg4 8.h3 Bf5 9.Nbd2+=; A2) 6...Bg4 7.d4 (7.Be2 Nd5 8.d4 e6 9.0-0=; 7.h3 Bf3 8.Qf3 Qd5 9.Qd5=; 7.Bb2 Qd5 8.Bf6 ef6 9.Nc3=) 7...Nd5 8.h3 Bf5 9.Nbd2+=; A3) 6...Bf5 7.d3 Bc8 8.e4 e6 9.de6+=; A4) 6...Qd5 7.d4 (7.Nc3 Qh5 8.d4 Bg4 9.Be2=) 7...e5 8.de5 Qd1 9.Kd1 Ng4=; B) 6.d4= B1) 6...Nd5 7.Nf3 (7.Bd3 e5 8.Bg6 hg6 9.de5=; 7.Ba3 e5 8.Bf8 Rf8 9.Bd3=; 7.Bc4 Bf5 8.Nf3 e6 9.Qe2=; 7.Be2 e5 8.de5 Ne5 9.Nf3=) 7...Bg4 8.h3 Bf5 9.Nbd2+=; B2) 6...Qd5 7.Nc3 (7.Nf3 e5 8.de5 Qd1 9.Kd1 Ng4=) 7...Qd6 8.a4 e5 9.Ba3=.

3.Nc3 dc4 4.e4 e5 5.Bc4 Bb4 (5...Qd4 6.Qb3 Qd7 7.Bb2=) 6.Nge2 (6.Qb3!? Qe7 7.Bf7 Qf7 8.Qb4=+) 6...0-0-/+ 7.d3 Bg4 8.0-0?? (better is 8.f3 Bc8 9.a3-+) 8...Bc3-+ 9.Rb1 Be2 (9...Nc6 10.Be3 Rb8 11.f3-+) 10.Qe2 Bd4 (better is 10...b6!? 11.f4-+) 11.Rb7 Qc8 12.Rb1 Qg4 (12...Rd8 13.Be3-+) 13.Qg4 Ng4 14.h3 Nf6 15.Bg5 Nc6?? (better is 15...Nbd7-+) 16.Bf6-/+ gf6 17.Bd5 Rab8 (better is 17...Na5 18.Ba8 Ra8-/+) 18.Rb8?? (better is 18.Bc6 Rfd8 19.Rfc1+=) 18...Nb8-+ (18...Rb8?! 19.Bc6 Rb2 20.a4=+) 19.Kh1 Na6 20.f3 Nb4 21.Bc4 Nc2 22.Kh2 Ne3 23.Rb1 Nc4 24.dc4 c5 25.Rb7 Ra8 26.a4 Kg7 27.a5 a6 28.Kg3 Kg6 29.h4 h5 30.Kh3 Kg7 31.g4 hg4 32.Kg4 Be3 33.Rb6 Kg6 34.h5 Kg7 35.Rc6 Rd8 36.Ra6 Rd2 37.Rc6 Rg2-+ 38.Kh3 Rg1 39.h6 Bh6 40.Rc5 Kg6 41.a6-/+ Be3 42.Ra5 Kg5 43.c5?? Kf4-+ 44.a7 Kf3 45.Ra2 Rh1 46.Rh2-+ Ra1 47.Rc2 Ra7 48.c6 Bb6 49.Rf2 Kf2 (50.Kh2 Kf3-+) 0–1. ahmed sharkawy_1 – MikeLWhit, ChessWorld.net, 2005.

3.c5 a5 4.b5=+.

3.c5 Nc6 4.a3 (4.b5 Nd4-/+) 4...Bf5 5.f3 (5.d4 e5 6.e3 Ne4=+) 5...Nd4 6.d3 e5 7.e4 (7.e3 Ne6=+) 7...de4 (7...Be6 8.Ne2 de4 9.Qa4 Bd7 10.Qd1 ef3 11.Nd4 ed4 12.Qf3 Qe7 13.Kf2-+) 8.fe4 (8.de4 Be6=+) 8...Bg4 9.Ne2 b6 10.h3 Bh5 (better is 10...Be6 11.Nd2 bc5-+) 11.g4?? (11.Be3 bc5 12.g4 Bg6-/+) 11...Bg6 (better is 11...Ne4 12.de4 Nf3 13.Kf2 Qd1 14.Kf3 Qd3 15.Be3 f5-+) 12.Bg2-/+ h5 (12...bc5!? 13.g5 Bh5 14.Qa4 Qd7 15.Qd7 Nd7 16.Nd4 cd4-/+) 13.g5=+ Nd7 14.Nd4 ed4 15.Bb2 (15.c6!? Ne5 16.b5=) 15...bc5 (15...Qg5 16.Qc2 Qe3 17.Qe2 Qe2 18.Ke2 bc5 19.Rc1-/+) 16.bc5 (16.h4 cb4 17.Bd4 c5=+) 16...Nc5 (16...Qg5 17.Qc2 Nc5 18.Bd4 Qg3 19.Kf1 Qd3 20.Qd3 Nd3 21.Nc3-+) 17.0-0 (17.Bc1!?-/+) 17...Qg5-+ 18.Bd4 (better is 18.Bc1 Qg3 19.Rf3-+) 18...f5?? (better is 18...Rd8 19.Bc5 Bc5 20.Kh1 Rd4-+) 19.ef5+= Bf5 (19...0-0-0 20.Qf3 Rd4 21.fg6 Ne6 22.Qa8 Kd7 23.Qc6 Kd8 24.Qe6 Rd6+–) 20.Rf5!+/– Qf5 21.Ba8 Bd6? 22.Bc5 Bc5 23.d4 Bb6 24.Ra2 0-0 25.Bg2 g6 26.Re2 Qf4 27.Be4?? Qg3= 28.Bg2 Rf5?? 29.Nc3?? Qc3-+ 30.Re1 Bd4 31.Kh1 Rg5 32.Qe2 Qa3?? 33.Qc4+– Kg7 34.Qd4 Kh6 35.Qh8 1–0. ian5300 – MikeLWhit, ChessWorld.net, 2005.

3.e3 a5 4.b5 d4 5.Nf3 de3 6.fe3 e6 7.Be2 Be7 8.0-0 0-0 9.d4 c6 10.a4 cb5 11.ab5 b6 12.Nc3 Bb7 13.Qc2 Nbd7 14.Bb2 Rc8 15.Bd3 h6 16.Rac1 Qc7 17.Qe2 e5 (17...Bd6 18.e4 Nh5 19.Qc2=) 18.d5 (better 18.Ne5!? Bd6 19.Nd5 Nd5 20.cd5+-) 18...Nc5= 19.Bb1 Bd6 20.e4 (20.Nd2 Rfd8=) 20...Qe7 (20...Nb3 21.Rcd1=+) 21.Nd1 Rcd8 22.Nd2 Bc8 23.Ne3 g6 24.Rf2 Nh5 25.Rcf1 (25.Nf5!? Bf5 26.ef5=) 25...Nf4=+ 26.Qd1 Ncd3 27.Bd3 Nd3 28.Bc3 (better 28.Rf3!? Nb2 29.Qb3-/+) 28...Nf2-+ 29.Kf2 f5 30.Ke2 f4 31.Nc2 Bg4 32.Nf3 Rc8 33.Kd3 (33.Qd3 Qc7-+) 33...Rc7 (better 33...Qc7 34.Ne3 Qc5 35.Ng4 Qc4 36.Kd2 Qc3 37.Ke2 h5 38.Nh6 Kg7-+) 34.Qa1 Bf3 35.gf3 Rfc8 36.Na3 (36.Qa2 Qh4 37.Rg1-+) 36…Ba3 (36...Ba3 37.Rg1 Qc5 38.Rg6 Kh7-+) 0-1. Minister007 (2340) - elitefeline (2340), Rated blitz game, lichess.org, 2022.

3.e3 dc4 4.Bc4 Bf5 5.Qb3 e6 6.d4 Nbd7 7.Nd2 Be7 8.Ngf3 0-0 9.a4 Nb6 10.Be2 Nbd5 11.Ba3 a5 12.ba5 Ba3 13.Ra3 Ra5 14.Qb7 Qd6 (14...Qa8 15.Qa8 Rfa8 16.Bd1+=) 15.Ra1 Rfa8 (15...Raa8 16.Nc4 Qe7+=) 16.0-0 (better 16.Nc4 Qb4 17.Qb4 Nb4 18.Na5 Nc2 19.Kd2 Na1 20.Ra1 Ra5 21.Ne5 Ne4 22.Ke1+-) 16...Ra4?? (16...Nc3 17.Bb5 R5a7 18.Qc6+=) 17.Ra4 (better 17.Qa8 Ra8 18.Ra8 Qf8 19.Rf8 Kf8 20.Ra1+-) 17...Ra4+= 18.Nc4 Qf8 19.Nfe5 Rb4 20.Qa7 Qb8 21.Qb8 Rb8 22.g4 Bg6 23.h4 h5 24.Ng6 fg6 25.g5 Nd7 26.Ne5 (26.Bd3!? Kf7 27.Ra1+/-) 26...Ne5+= 27.de5 Rb4 28.Bd3 (28.Rc1!? Rh4 29.Bf3=) 28...Rh4 (better 28...Rg4 29.Kh2 Rh4 30.Kg2 Rg4 31.Kf3 Rg5-+) 29.f4? (better 29.f3=+) 29...Ne3-+ 30.Rf3 Rg4 31.Kf2 Nf5 (31...Nd5!? 32.Bg6 Nf4 33.Be8-+) 32.Bc4 Kf7 33.Bb3 (33.Ba6 Nh4 34.Rc3 Rf4 35.Kg3 Rg4 36.Kh3 Nf5 37.Rc7 Ne7-+) 33...h4 (better 33...c5 34.Bd1 Nh4-+) 34.Ke2?? (34.Bd1 c5-+) 34...Rg3 (better 34...Nd4 35.Ke3 Nf3-+) 35.Rg3 Ng3 36.Kf3 Nf5 37.Bc2? (better 37.Kg4-+) 37…Nd4 (37...Nd4 38.Kg4 Nc2 39.Kh4 c5-+) 0-1. Minister007 (2330) - chaipanimporte (2390), Rated blitz game, lichess.org, 2020.

3.e3 c5 4.bc5 e6 (4...Qa5!?+=) 5.d4+/– ½–½. NathanStack – BeerClark, ChessWorld.net, 2004.

4.Bb2 d4 5.d3 (better is 5.Nf3!? Nc6 6.Qa4+=) 5...a5-/+ 6.a3 ab4 7.ab4 Ra1 8.Ba1 Nd5 9.Qa4 Nc6 10.Nf3 (better is 10.b5 Ncb4 11.Nd2-+) 10...Bd7 (better is 10...Ndb4 11.Nbd2 Qd5-+) 11.b5-/+ Ncb4 12.Ne5 Bc5 13.Nd7 Qd7 14.Qa8 Ke7 (14...Qd8 15.Qb7 0-0-+) 15.Qa4?? (better is 15.Qh8 Qb5 16.Qg7 Nc2 17.Kd2 Na1 18.Qe5 Kf8 19.Qh8 Ke7 20.Qe5 Kf8 21.Qh8 Ke7 22.Qe5=) 15...Nb6-+ 16.Qb3 Ra8 17.Na3?? (17.Bb2 Qb5 18.Ba3-+) 17…Ra3! (17...Ra3 18.Qa3 Nc2 19.Kd1 Na3-+) 0-1. Cabezas Cantillana,Marco (1815) - Cabre,Carlos (1965), Honor Club Chile op, 2004. (=1.c4 Nf6 2.b4 d5)

4.Nc3 d4 5.Na4 Bd7 6.Nf3 Qe7 7.e3 de3 8.de3 c6 (8...e4!? 9.Nd4 Nc6 10.Nc6 Bc6=+ (< 10...bc6 11.Bb2+=)) 9.Bb2= e4 10.Ne5 (10.Nd2 Nd5 11.Nc3 Nc3 12.Bc3 b6+=) 10...Bf5 (10...b5 11.Nd7 Nbd7 12.Nc3=) 11.Bc4 Be6 12.Qc2 Bc4 (12...b5 13.cb6 ab6 14.0-0= (14.Nb6? Qb4 15.Bc3 Qb6-+)) 13.Qc4 (13.Nc4 Qe6+=) 13...Nd5 14.Qe4 (better is 14.b5+=) 14...f6-/+ 15.Nc3 Qe5 (better is 15...Nc3!? 16.Bc3 Nd7-+) 16.Qe5=+ fe5 17.Ne2?? (better is 17.Nd5!? cd5 18.Be5-/+) 17...e4 (17...Nb4!? 18.Kd2 Nd7 19.a3-+) 18.Ng3? Nb4 19.0-0 Nd3 20.Bd4 Nc5 21.Rac1 Nd3 22.Rc3 c5 23.Ne4 Nb4 24.Bc5 Na2 25.Rd3 Bc5 26.Nc5 Nb4 27.Rc3 0-0 28.Nb7 Nd7 29.Rb3 a5 30.Rd1 Nb6 31.e4 Rfe8 32.Re1? Re7 33.g3?? Rb7 34.e5 Nc4 35.f4 a4 36.Rc3 Rc8 37.Re4 a3 38.Rec4 Rc4 39.Rc4 a2 40.e6 a1Q 41.Kg2 Qa2 (42.Kf3 Qb3 43.Kg2 Qc4-+) 0-1. ian5300 - xCalvin, ChessWorld.net, 2005.

4.Nf3 Nc6 5.Bb2 e4=+.

4.a3 a5 5.b5 c6 6.a4 (6.Nf3 Bg4=) 6...e5=+ 7.Bb2 Bd6 8.e4 Nf4 9.g3 (9.Nf3 Qf6=+) 9...Ng6 10.Nf3 Nd7 (10...0-0 11.Nc3=+) 11.Bc4 (11.d4 0-0=) 11...0-0=+ 12.0-0 (12.d4 ed4 13.Bd4 Nde5 14.Ne5 Ne5=+) 12...Kh8 (12...Nb6 13.Bb3=+) 13.Re1 (13.d4 ed4 14.Qd4 Nde5=) 13...f5 (better 13...Nb6!? 14.Be2 c5=+) 14.ef5+= Rf5 Black fights for the Initiative 15.Bd3 Rf6 16.Nc3 (16.Bg6 Rg6 17.Be5 Ne5 18.Ne5 Be5 19.Re5 Re6+=) 16...Nc5= 17.Bf1? (better 17.Bg6 Rg6 18.Ne4= (worse 18.Ne5 Be5 19.Re5 Nd3-+)) 17...Bg4-/+ 18.Bg2? (better 18.Re3 e4! 19.Ne4 Ne4 20.Be2 Bf3 21.Bf3-/+) 18...Nd3-+ 19.Qc2 (19.Qe2 Nb2 20.Ne4 Rf8-+) 19...Ne1 (19...Rf3!? 20.bc6 Ne1 21.Re1 bc6 22.Bf3 Bf3 23.Ne4-+) 20.Ne1 Bc5 (20...Rf2 21.Ne4 Rf8 22.bc6 bc6 23.Qc6-+) 21.bc6? (21.Ne4!? Bb6 22.Nf6 Qf6 23.d4 ed4 24.bc6 bc6 25.Qc6 Qc6 26.Bc6=+) 21...Rf2 (21...Bf2!? 22.Kh1 bc6 23.Ne4-+) 22.Ne4 Rd2 Black launches an attack. 23.Qc5 Rb2 24.Nd6 (24.cb7 Rb7 25.Nd6 Rd7 26.Ba8 Rd6-/+) 24...Qe7 25.cb7 (25.c7 Rd2 26.Bb7 A) 26...Rd6 27.Ba8 Bc8 28.Rc1+- (28.Qa5?! Ra6 29.Qb5 Ra8=); B) 26...Rf8-+) 25...Rd8-+ 26.Nd3 (better 26.h3 Rd6 27.hg4-+) 26...Rd2?? (26...Rd6 27.Nb2 Rd1 28.Nd1 Qc5 29.Nf2+-) 27.Ne5?? (27.Bd5 Rc2 28.Qb6+- (28.Qc2?! Qd6 29.Qc5 Qb8+-)) 27...Ne5-+ (27...R2d6? 28.Qd6!? Qd6 29.Nf7 Kg8 30.Nd6+-) 28.Qc8 (28.Qe5 Qd6 29.Qd6 R2d6 30.Rc1-+) 28...Qd6 29.b8Q Nf3 (29...Qd4 30.Kh1 Rd1 31.Rd1 Qd1 32.Bf1 Qf1) 30.Bf3 Qd4 (30...Bf3 31.Qd6 Rg2 32.Kf1 Rc8 33.Rb1+-) 31.Kh1 Bf3 0-1. aravind555 (1685) - ericaldaya (1675), lichess.org, 2020.

4.a3 a5 5.b5 e5 6.Bb2 Bd6 (6...Nd7 7.e4 N5f6 8.Nc3+=) 7.e3 (7.g3 0-0 8.Bg2 Be6=) 7...0-0 8.Bc4 (8.Qc2 Re8-/+) 8...Nb6 9.Ba2 Kh8 (9...Bf5!?-/+) 10.Nc3= f5 11.Qh5 (11.Nge2 Qe7=) 11...N8d7+= 12.Nh3 Nf6 13.Qh4 h6 14.Ng5 Qe8 15.0-0 Qg6 16.f4 (16.Nf3 e4 17.Nd4 Bd7+=) 16...ef4-/+ 17.ef4 Nh5 18.Nh3 Bd7 19.Rae1 Bc5 20.Kh1 c6 21.a4 cb5 22.ab5 a4 23.Nd5? (better is 23.Nf2 a3 24.Ba1+=) 23...Nd5 (23...a3!? 24.Nb6 Bb6 25.Bc3-+) 24.Bd5 Qg4 (24...a3!? 25.Bc3 Bb5 26.Re6-+) 25.Qg4-/+ fg4 26.Re5 a3 (26...gh3? 27.Rh5 hg2 28.Kg2+–) 27.Bc3 Rf5 (27...gh3 28.Rh5 hg2 29.Kg2+/–) 28.Bb7 Rb8 (better is 28...Raf8!? 29.Rf5 Rf5-/+) 29.Bc6+= Rd8 (better is 29...Re5!? 30.Be5 Rd8=) 30.d4+= gh3 (30...Re5 31.fe5 Bb6 32.Bd7 Rd7 33.Ng1+/–) 31.Rf5+/– (31.Rc5?! hg2 32.Kg2 Nf4 33.Kh1 Ne2 34.Rcf5 Bf5=) 31...Bd4 32.Bd4 Bf5 33.Be5 Rc8? (33...hg2 34.Kg2 Nf6+/–) 34.Ra1+– Bd3?! (34...Nf6 35.gh3 Bd7 36.Bd7 Nd7+–) 35.gh3 Nf6 36.Ra3 Be4 (36...Bg6+–) 37.Be4 Ne4 38.Ra7 Kg8 (38...Rc1 39.Kg2 Rb1 40.Rg7 Rb5 41.Rb7 Re5 42.fe5 Kg8+–) 39.Rg7 (39.Rg7 Kf8 40.b6+–) 1–0. Farkas,Miso (2130) – Kovacevic,Dragan (2235), Druga Liga – Vojvodina, 2011.

4.a3 Bd7 5.e4 Nf6 6.e5 Ng4 (6...Nd5!?=) 7.d4+/– e6?? (better is 7...Nc6+/–) 8.Qg4+– g6 9.Bg5 Be7 10.Be7 Qe7 11.Bc4 a6 12.Nc3 Bc6 13.Nf3 Nd7 14.0-0 0-0-0 (14...Nb6 15.Bd3+–) 15.Rfc1 (15.b5 h5 16.Qg5 Qg5 17.Ng5 ab5 18.Bb5 Rhf8 19.Bc6 bc6+–) 15...Nb6 16.Bb3 (16.Be2!? h5 17.Qf4 Bf3 18.Bf3 g5+–) 16...h5 17.Qf4 Bf3 18.Qf3 c6 (18...Rd4 19.b5 a5 20.Qe3+–) 19.Ne4 (19.b5 ab5 20.Nb5 Kb8+–) 19...Rd4 (19...Kb8 20.Nd6 Rhf8 21.a4+–) 20.Nd6 Kc7 21.Qe3 (21.b5 Qd7+–) 21...Rg4 (21...Rd6 22.ed6 Qd6 23.a4+–) 22.a4 (better is 22.h3 Rh4 23.g3 Rh3+–) 22...Rb4 23.Bd1 (better is 23.Qc3 a5 24.Qc5+–) 23...h4 (23...Rd8+–) 24.Rab1 a5 (24...Nd5 25.Rb4 Kb8 26.Rcb1 Ne3 27.Rb7 Qb7 28.Rb7 Ka8 29.fe3+–) 25.Rb4 (better is 25.Qc5 h3 26.g3 f6 27.Qa5 Rb1 28.Rb1 fe5 29.Nb7 Rc8+–) 25...ab4 26.a5 (better is 26.Nb5 Kb8 27.Qb6 cb5 28.Rb1+–) 26...Na8 (26...Nc8 27.Nc8 Rc8 28.Qb6 Kb8+–) 27.Qa7 g5 28.Qb7 1–0. stampyshortlegs – Sirprocyon, ChessWorld.net, 2015.

4.a3 Bg4 5.Qa4 Nd7 6.e4 N5b6 7.Qc2 e6 8.Be2 Be2=+ 9.Ne2 Bd6 10.d4 0-0 11.0-0 c6 12.e5 Be7 13.Be3 Nd5 14.Bd2 Rc8 15.Nbc3 N7b6 16.Ne4 f5 17.Nc5+= Bc5 18.dc5 Na8 19.Nf4 Nf4 20.Bf4 Nc7 21.Rfd1 Nd5 22.Qb3 Qe7 23.Qg3+= Nf4 24.Qf4 g5 25.Qc4 Rfd8 26.Rd6 Kf7 27.Rad1 Rd6 28.cd6 Qd7 29.Rc1 a6 30.a4 h6 31.h4 Kg6 32.hg5 hg5 33.f4 g4 34.b5 ab5 35.ab5 Kf7 36.Qc5 Ke8 37.b6 Ra8 38.Qf2 Qh7 39.Qf1 Kd7 40.Ra1?? Qh8 41.Ra7+/– Ra7 42.ba7 Qa8 43.Qf2+– Qh8?? 44.Qb6 Qc8 45.Qc7! (45...Qc7 46.dc7 Kc7 47.a8Q+–) 1–0. Argento1960 – BeerClark, ChessWorld.net, 2004.

4.b5 c6 5.a4 (5.e4 Nb4 6.Nf3 a6=) 5...cb5 (5...a6 6.Ba3-/+) 6.ab5 Bd7 (6...Nd7 7.Nf3 N7f6 8.Bb2=) 7.e3 (7.e4 Nb4 8.Nc3 e5+=) 7...g6 (7...Bf5!? 8.Nf3 Nd7=) 8.Bb2+= Nf6 9.Nf3 Bg7 10.Be2 0-0 11.0-0 Be6 12.d4 Nbd7 13.Nc3 Nb6 14.Bd3 (14.Qc2 Nbd5+=) 14...Bc4 15.Ne5 Bd3 16.Qd3 Qc8 17.Ba3 Re8 (17...Qe6 18.f4+=) 18.Rfc1 Qb8 (18...Qe6 19.Bc5+=) 19.Bc5 e6 20.Ne4 (20.f4!?+/–) 20...Ne4+= 21.Qe4 Nd5 22.Qf3 (better is 22.Nc4+=) 22...Nf6?? (better is 22...Be5 23.de5 Qe5=) 23.Nc4 (better is 23.Ba3!? h6+–) 23...b6 24.Bd6 Qd8 25.Qb7 Qc8 26.Ra7+– Qb7 27.Rb7 Nd5? 28.Nb6 Nb6 29.Rb6 h5 30.h3 Red8 31.Bf4 Rd5 32.Rb7 g5 33.e4 Rd4 34.Bg5 Re4 35.Rcc7?? Re1 36.Kh2 Be5 37.f4 Bc7 38.Rc7 Rb8 39.Bf6 Rb5 40.Rc2 Rf5?? 41.Be5 Re3 42.g4 hg4 43.hg4 Ree5 44.gf5 Rf5 45.Kg3 Kg7 46.Kg4 Kg6 47.Rc6 Ra5 48.Rb6 Ra4 49.Rc6 f5 50.Kf3 Ra3 51.Kf2 Ra2 52.Kf3 Ra3 ½–½. Nikolic,Jovane (1695) – Assad,Otavio (1665), Sao Bernardo do Campo BRA, 4th Open, 2012.

4.b5 Nd7 5.e4 N5f6 6.Nc3+=.

5.Bb2 Bd6 6.d3 0-0 7.Nf3 Qe7 8.g3 Bg4 9.Bg2 c6 10.Nbd2 f5 11.0-0 e4 (better is 11...Nd7!?=) 12.de4+/– fe4 13.Ne1 (better is 13.Ne4!? Qe4 14.Ne5 Be2 15.Be4 Bd1 16.Rad1 Be5 17.Be5+/–) 13...e3 14.Nc4 ef2 15.Rf2 Rf2 16.Kf2 Qf7 17.Kg1 Bc7 18.Ne5 (18.Qc2 Be6 19.Nf3 Bd8+=) 18...Be5+= 19.Be5 Nd7 20.Bd4 Re8 21.Nf3 a5 22.ba5 c5 (better is 22...Ne3 23.Be3 Re3+=) 23.Bf2?? (23.Ng5 Qf5 24.Bc5+–) 23...Nc3-+ 24.Qc2?? (24.Qd3 Ne2 25.Kf1-+) 24...Ne2 25.Kf1 Bf3 26.Re1 (26.h4 Qd5 27.Bh3 Bg4-+) 26...Bg2 27.Kg2 Qd5 28.Kh3 Re6 29.Re2 Rh6 30.Kg4 Nf6 31.Kf4 g5 (31...g5 32.Ke3 Ng4#) 0–1. Lopez,Manuel – Lopez,Aldi, URU–chT, 2004.

5.Bb2 Nd7 6.Nf3 Bd6 7.Qb3 N5b6 8.e3 0-0 9.Be2 e4 10.Nd4 Ne5 11.0-0 Qh4 12.g3 Qh3 13.Nc3 Bg4 14.f3 (better 14.f4 Be2 15.fe5-+) 14...Bf3?? (14...Nf3 15.Bf3 ef3 (15...Bf3?! 16.Nf3 ef3 17.Rf3=) 16.Nf3 Bg3-+) 15.Bf3 ef3 16.Nf3 Ng4 (16...Rad8 17.Ne2 Nf3 18.Rf3=) 17.Ne2 Rad8 18.Rad1 Rfe8 19.Nf4 (better 19.Qf7! Kf7 20.Ng5 Kg8 21.Nh3=) 19...Bf4-/+ 20.gf4 Nd5 21.Rde1? (better 21.Ba1-/+) 21...Ndf6?? (better 21...Re6 22.Qc2 Rg6 23.Qg6 fg6-+) 22.Re2= Ne4 Attacking the backward pawn on d2 23.Rg2 h5? (better 23...c6=) 24.d3+- Nef6 (better 24...Nd2 25.Rd2 Ne3+-) 25.e4?? (better 25.Rg3 Qg3 26.hg3 Re3 27.Qc4 Rdd3 28.Bf6 gf6 29.Kg2 Ra3 30.Qb5+=) 25...Ne3=+ 26.Rg7 Kg7 27.Bf6 Kf6 28.Qb2? (28.Qc3 Ke7 29.Qc7 Rd7 30.Qe5 Qe6 31.Qc5 Qd6 32.Qe3 Qd3 33.Qc5 Kd8 34.Qa7 Qe4 35.Qa5 Kc8 36.Qa8 Kc7 37.Rc1 Kd6-/+) 28...Kg6 (better 28...Ke7 29.Qe5 Kd7 30.Qd4 Kc8 31.Qe3 Rg8 32.Kf2 Qg2 33.Ke1 Qc2-+) 29.f5= Kh6?? (29...Nf5 30.ef5 Kf5 31.Ng5 Qf1 32.Kf1 Kg5 33.Qg7 Kf4+/-) 30.Qf6 Kh7 31.Ng5 Kg8 32.Qf7 Kh8 33.Qh7 1-0. bjoernsen (2345) - Eldinba (2350), Rated blitz game, lichess.org, 2023. (=1.c4 A15: English Opening: 1...Nf6 1...Nf6 2.b4)

5.Bb2 f6 6.Qc2 a5 7.b5 c5 8.e3 Be6 9.Nf3 Nd7 10.Nc3 N7b6 11.Bd3 g6 12.h4 Qd7 13.Nd5 Nd5 (worse is 13...Qd5 14.h5+=) 14.h5 g5 15.Bc4 Bh6 16.Be2 Rc8 17.Bc3 b6 18.Nh2 c4 19.a4 Nb4 20.Qb1 Nd3 21.Kf1 g4 22.Kg1 Rc5 23.Nf1 f5 24.Ng3 0-0 25.Bf1 Qd5 26.Ne2 Rcc8 27.Nc1 Nc5 28.Ne2 Nb3 29.Ra2 f4 30.Qb2 g3! 31.fg3? (better is 31.ef4 ef4 32.Nd4 Nd4 33.Bd4-+) 31...fe3 32.de3 Qd1 (better is 32...Be3!? 33.Kh2-+) 33.Nf4 ef4 (33...Bf4?! 34.ef4 ef4 35.Qf2=) 34.ef4 Bg4 35.Qf2 Bg7 36.Bg7 Kg7 37.h6 Kh8 38.Kh2? (38.Qb6 c3 39.Qe3-+) 38...Rf5 39.Kg1 (39.Rb2 c3 40.Rb3-+) 39...c3 40.Rc2 Nd4 41.Rh4 (41.Rc1 c2 42.Qc2 Qc2 43.Rc2 Rc2 44.Rh4-+) 41...Nc2 42.Rg4 Qd4 (42...Qd4 43.Qd4 Nd4-+) 0–1. Cruz Condori,A (2145) – Mikhalevski,V (2580), IV Open, Calvia ESP, 2007. (=1.c4 Nf6 2.b4 d5 3.cd5 Nd5)

5.e4 Nf6 6.Qc2 a5 7.Bb2 ab4 8.Nf3 ba3 9.Ne5 Nbd7 10.Nd7 Bd7 11.Na3 Be7 12.Bc4 0-0 13.0-0 Ba4 14.Qc3 c6 15.Nc2 b5 16.Ba2 c5 17.Bd5 Ra7 18.Ne3 b4 19.Qe5 Bd6 20.Qg5 h6 21.Bf6 hg5 (worse is 21...Qf6 22.Qf6 gf6 23.Ra2+/–) 22.Bd8 Rd8 23.Ra2 Rdd7 24.Nc4 b3 25.Ra3 Bb5 26.Rb3 (26.Nd6? Bf1 (26...Ra3 27.Nb5 Ra5 28.Bb3+=) 27.Ra7 Ra7 28.Bb3 c4-+) 26...Bc4 27.Bc4 Bf4 28.d3 Rdb7 29.Rb7 Rb7 30.g3 Be5 31.Kg2 Rb2 32.Kh3 Kf8 33.Kg4 f6 34.h4 gh4 35.gh4 Bd4 36.f4 Rg2 37.Kf3 Rb2 38.Rh1 Ke7 39.h5 Rf2 40.Kg3 Rd2 41.h6 gh6 42.Rh6 Kd7 43.Kg4 Rg2 44.Kf5 Rf2 45.Rh7 Kc6 46.Re7 Kd6 47.Re6 Kc7 48.Bb5 Rh2 (better is 48...Rb2 49.Re7 Kd8 50.Re8 Kc7+/–) 49.Bc4 (49.Rf6!? Bf6 50.Kf6+–) 49...Rf2+/– 50.Re8 Kd7 51.Bb5 Kc7 52.Re7 ½–½. Woischke,Norbert (2200) – Buettner,Fritz (2280), CIF, 1998. (=1.c4 Nf6 2.b4 d5)

5.e4 Nf6 6.Nc3 c5 7.Rb1 (7.Nf3 Nc6 8.b5 Nd4 9.Ne5 Bd6=) 7...Nc6 8.b5 Nd4 9.Bc4 Bd6 10.Nge2 0-0 11.f3 Be6 12.Nd5? (better is 12.Be6!? Ne6 13.0-0=+) 12...Nd5-+ 13.ed5 Bf5 14.Rb2 (14.d3 Qh4 15.Ng3 e4-+) 14...e4 (14...Qh4 15.Ng3 e4 16.0-0 ef3 17.d3-+) 15.Nd4 (15.0-0 Qh4 16.g3 Qg5 17.fe4 Be4+-) 15...cd4 (15...Qh4 16.Kf1 cd4 17.fe4 Be4 18.d3-/+) 16.a4 (16.fe4!? Qh4 17.Kf1 Be4 18.d3-/+) 16...ef3 17.Qf3 Qe8 (better is 17...Re8!? 18.Kd1 Be4-+) 18.Kf2-/+ Rc8 (18...Be4 19.Qh5-/+) 19.d3=+ a6?? (better is 19...Qe5=+) 20.Qf5+- Ba3 21.Rc2 Bc1 22.Rcc1 ab5 23.Rhe1+- Qd8 24.ab5 g6 25.Qf4 Qb6 26.Re4 Qa5 27.Rd4 Rcd8 28.d6 Qb6 29.Kf3 Rd7 30.Qf6 Re8 31.Rc2 Qc5 32.Re2 Rf8?? 33.Re7+- Rdd8 34.d7 Rb8 35.Bf7 Rf7 36.Qf7 (36...Kh8 37.Qh7) 1-0. melr11 - MikeLWhit, ChessWorld.net, 2005.

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

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

4.b5 Bg4 5.Qb3 Nbd7 6.cd5 Nc5 7.Qc4 Qd5 8.Qd5 Nd5 9.f3 Be6 10.a3 (better 10.Ba3!?-/+) 10...Nb3-+ 11.Bb2 Na1 12.Ba1 f6 13.e4 Nb6 14.Ne2 Ba2 15.Nbc3 Bf7 16.a4 Bb4 17.g3 0-0-0 18.Bb2 Rd6 19.Bc1 Rhd8 20.Bh3 Kb8 21.0-0 (21.Bg2 Bb3-+) 21...Bc4 22.Re1 Be2 23.Ne2 Bd2 (23...Bd2 24.Bd2 Rd2-+) 0-1. Furseev,E (1665) - Shaban,Aliaksandra, 2nd Black Pawn H Open, 2018.

4.cd5 Nd5 5.a3 c5 6.b5 Bd6 7.Bb2 0-0 8.Qc2 Qe7 9.g3 b6 10.f3 Bb7 11.Nc3 Nf6 12.e4 Nbd7 13.Bc4 Rfd8 14.h4 Nf8 15.Nh3 h6 16.d3 Ne6 17.g4 Nh7 18.Qf2 Nd4 19.0-0-0 g6 (19...a6 20.ba6 Bc6 21.Bd5-/+) 20.Kb1 a6 21.a4 ab5 22.ab5 Kg7 23.f4 Kh8 (23...Nf6 24.g5 Ng4 25.gh6 Nh6 26.Rdg1=) 24.f5 (24.fe5 Be5 (worse is 24...Qe5 25.Qf7 Qg7 26.Qg7 Kg7 27.Ne2+/–) 25.Qf7 Qf7 26.Bf7 Kg7+=) 24...gf5 25.gf5 Rg8 26.Bc1 Nf6 27.Ng5 (better is 27.Bh6!? Ng4 28.Qd2+=) 27...Rg7-/+ (27...hg5 28.hg5 Kg7 29.gf6 Qf6 30.Bh6 Qh6 31.Rdg1 Kf8 32.Rh6+–) 28.Rdg1 Rag8 (28...hg5 29.hg5 Nh7 30.f6+–) 29.Qa2 Rf8 (29...hg5? 30.hg5 Nh7 31.f6+–) 30.Rh3 (30.Nf7 Rff7 31.Bf7 Rf7 32.Bh6=) 30...Ra8+= (30...hg5 31.hg5 Nh7 32.f6+–) 31.Qh2 Rag8 (31...hg5 32.hg5 Nh7 33.Rh1+–) 32.Rhg3 Rf8 (32...hg5 33.hg5 Nh7 34.Rh3 Be4 35.Ne4+–) 33.Qd2 Ng8 34.Qf2 Nf6 35.Nf3 Rg3 36.Rg3 Rg8 37.Ng5 Rg7 38.Nf3 Ng4 39.Qe1 Nf3 40.Rf3 Qf6 41.Rh3 Rg8 42.Qe2 Qg7 43.Qa2 Ra8 44.Qe2 Nf6 45.Qe3 Ng4 46.Qf3 Nf6 47.Rg3 Qh7 48.Ne2 Rg8 49.Bb2 Rg3 50.Ng3 Qg7 51.Bc1 Kg8? 52.Nh5+– Nh5 53.Qh5 Bf8?? 54.Bh6! Qf6 55.Bg5 Qg7 56.f6 Qh7 57.Qh7 Kh7 58.Bf7 Bc8 59.Bc4 Kg6 60.Kc2 Bd6 61.Kd2 Bd7 62.f7 Bg4 63.Bd8 Kh5 64.Ke3 Bf8 65.Kf2 Bd1 66.Kg3 Bg4 67.Bb6 Be7 68.Bd8! Bf8 69.Bf6 ½–½. Laco,G (2080) – Dommes,V (2295), TCh–Eur Seniors, Dresden GER, 2010. (=1.c4 Nf6 2.b4 d5)

4.a3 a5 5.b5=+.

4.a3 c5 5.bc5= Bc5 6.d4 Be7 7.Nd2 b6 (7...Nc6 8.Ngf3=) 8.Be2 Bb7 9.Bf3 (9.Ngf3 dc4 10.Nc4 0-0=) 9...Qc7 (9...0-0 10.Ne2=+) 10.cd5= Nd5 11.Bb2 0-0 12.Rc1 Nc6 13.g3 (13.Ne2 Rfc8=) 13...Qd7=+ 14.Ne2 Na5 15.0-0 Rac8 16.Rc8 Rc8 17.Qb1 Qa4 18.e4 Rc2 19.ed5 Rd2 20.Bc3 Nc4 (20...Bd5 21.Bd5 Re2 22.Bf3=+) 21.de6=+ (21.Bd2 Nd2 22.Qd3 Nf1 23.de6 Nd2 24.ef7 Kf8 25.Qd2 Bf3-+) 21...fe6 (21...Na3?? 22.ef7 Kh8 23.Qf5+–) 22.Bb7 Re2 23.Qd3 Ra2 24.Qe4 Qd7 25.Bc6 Qc8 26.d5 Na3 27.Qg4 (27.de6 Rc2 28.Qd4 Bf6-+; 27.Qe6? Qe6 28.de6 Rc2-+) 27...Bf8 28.de6 (28.Qe6?! Qe6 29.de6 Rc2=) 28...Rc2?? (better is 28...Qc6 29.e7 Nc2 30.ef8B Qc3 31.Qe6 Kf8 32.Qa2 a5+/–) 29.e7!+– Qc6 (29...Be7 30.Bd5) 30.ef8Q (30.ef8R Kf8 31.Bb4 Kg8+–) 30...Kf8 31.Qg7 Ke8 32.Re1 Kd8 33.Qf8 Kd7 34.Qe8 (34...Kc7 35.Re7 Kd6 36.Re6 Kc7 37.Rc6 Kb7 38.Qc8) 1–0. Laco,Giuseppe (2205) – Harej,B, 5th HIT Open, 2000.

4.Qb3 a5 5.b5 Bb4 6.a3 Be7 7.Bb2 (7.d4 0-0=) 7...dc4 8.Bc4 0-0 9.Nc3 b6 10.Nge2 Bb7 11.f3 c5 12.Nf4 (12.Rd1 Qc7=) 12...Qd6 (12...Bd6 13.Rd1+=) 13.d3= Nbd7 14.0-0-0 (14.Rd1 e5 15.Nfd5 Bd5 16.Bd5 Nd5 17.Qd5 Qg6=) 14...Ne5 (14...Rad8 15.Ne4 Qc7 16.Be6 fe6 17.Qe6 Rf7 18.Ng5=) 15.Ne4= Qb8 16.Be6 a4 (16...Ne4!? 17.fe4 c4 18.Bc4 Nc4 19.dc4 Be4=) 17.Qa2+/– Ne4 18.de4 c4 19.Bd5 (19.Bc4? Nc4 20.Rd3 Qe8-+) 19...Ra7 20.Bc3 (20.Kb1 Bc5 21.Qa1 Re8 22.Be5 Re5 23.Bc4 Re8+/–) 20...Bc5+= 21.Kd2 Bd5 22.Nd5 (22.ed5?! Re8 23.Rhe1 g5 24.Be5 Re5+=) 22...Qd6 23.Ke2 Ba3?? (better is 23...Re8+=) 24.Be5+– Qe5 25.Qa3 f5 26.Qc3 Qc3 27.Nc3 a3 28.ef5 a2 (28...Rf5 29.Rd4+–) 29.Ra1 Rfa8 (29...Rf5 30.Rhc1+– (30.Ra2?! Ra2 31.Na2 Rb5+–; 30.Na2?! Rb5 31.Rhc1 Rb2 32.Kf1 Raa2 33.Ra2 Ra2+/–)) 30.Rhc1 Ra3 31.Rc2 Rb3 32.e4 Raa3 (32...Kf8 33.f4+–) 33.Kd2 (33.Kd2 Kf7 34.Rca2 Rb2 35.Rb2 Ra1 36.Nd5+–) 1–0. Laco,Giuseppe (2215) – Piber,V, Open, Nova Gorica SLO, 1999. (=1.c4 Nf6 2.b4 d5 3.e3 e6)

3.Bb2 d5 4.cd5= Nd5 5.a3 Nc6 6.Nc3 (6.b5 Na5=) 6...e5 7.e4 Nc3 8.Bc3 Nd4 9.Nf3 Bg4 (9...Be6 10.Ne5 Be7 11.Qa4 c6 12.b5+/-) 10.Be2= Bf3 11.Bf3 Nf3 (11...Be7 12.Bd4 Qd4 13.Rc1=+) 12.Qf3+= Bd6 13.0-0 Qe7 14.Qg4 g5 (White fights for the initiative) (14...0-0!?+=) 15.d4+/- h5 16.Qf5 f6 17.d5 (17.Rad1 Rg8+/-) 17...c6 (17...Rh6 18.Rfc1+/-) 18.Rfd1 cd5 19.Rd5 Kf7 (19...Rd8 20.Rad1 Rg8 21.Qf3+/-) 20.Rad1+- Qe6?? (better is 20...Rad8+-) 21.Rd6 (better is 21.Qe6!? Ke6 22.Rd6 Kf7 23.Rd7 Ke8 24.Rb7 h4+-) 21...Qf5 22.ef5 Rhe8 23.g3 g4 24.Rd7 Re7 25.Re7 Ke7 26.Kg2 Rc8 27.Rc1 e4 28.Bf6! Kd7 29.Rc8 Kc8 30.h3 b5 31.h4 Kd7 32.Kf1 Kd6 33.Ke2 Kd5 34.Ke3 a6 35.Bg5 Ke5 36.f6 Kf5 37.f7 (37...Ke6 38.f8Q+-) 1-0. melr11 - xCalvin, ChessWorld.net, 2005.

3.Bb2 Nbd7 4.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7).

3.Bb2 g6 4.Nc3 Bg7 5.e3 0-0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Nc3).

3.b5 e5 4.d3 d5 5.Nf3 (5.cd5 Qd5 6.Qa4 Qd4 7.Qd4 ed4=+) 5...e4 (5...dc4!? 6.dc4 Qd1 7.Kd1 Bc5-/+) 6.de4= de4 7.Ne5 (better is 7.Qd8!? Kd8 8.Ne5=) 7...Bb4-/+ 8.Bd2 Bd2 (better is 8...Qd4 9.Bb4 Qa1-/+ (9...Qe5?! 10.Bc3 Qe7 11.Qd2=)) 9.Nd2? (9.Qd2 Nbd7 10.Qg5 0-0=+) 9...0-0?? (better is 9...Qe7-+) 10.e3-/+ Qd6 (10...Qe7 11.f4=+) 11.f4=+ Bg4?? (11...Nbd7 12.Nd7 Bd7 13.Qc2=+) 12.Be2?? (better is 12.Ng4 Rd8 13.c5+-) 12...Be2= 13.Qe2 Qd3?? (better is 13...Nbd7 14.Nd7 Qd7=) 14.Nd3+- ed3 15.Qd3 Nbd7 16.0-0-0 Ng4 17.Ne4 Rad8 18.Qe2 f5 19.Nf2 Ngf6 20.e4 fe4 21.Ne4 Ne4 22.Qe4 Nf6 23.Qb7 Rd7 24.Rd7 Nd7 25.Qc7 Rf7 26.Qd8 Nf8 27.Re1 Rd7 28.Qe8 Rd6 29.Rd1 Re6 30.Qa8 Kf7 31.Rd8 Ng6 (32.Qa7 Re7+-). MikeLWhit - xCalvin, ChessWorld.net, 2005.

3.Nc3 e5 4.e4 c6 5.Nf3 g6 6.d3 Bg7 7.Be2 0-0 8.a4 Be6 9.0-0 Nbd7 10.Bg5 Rc8 11.Qd2 Qe8 12.h3 Kh8 13.Bh6 Bh6 14.Qh6 Ng8 15.Qe3 a6 16.d4 f5 17.ef5 Bf5 18.g4 e4 (18...Be6!?+/–) 19.Nd2+– (19.gf5?! ef3 20.Bd3 Ne7 21.fg6 Ng6+=) 19...Rf6? (19...Be6 20.Nde4 Qe7+–) 20.d5 Ne5 21.Nde4 Qd7 (21...Be4 22.Ne4 cd5 23.cd5 Qe7 24.Nf6 Qf6+–) 22.Nf6 Nf6 23.gf5 gf5 24.Kh2 Re8 25.Qh6 Qe7 26.Rg1 Neg4 27.hg4 Ng4 (27...Qe5 28.Kh1 Qc3+–) 28.Bg4 Qe5 29.f4 Qc3 30.Bf3 Qb2 31.Kh1 Qc3 (31...a5 32.Rae1 Rd8 33.Re7 Qg2 34.Rg2 ab4 35.Qh7) 32.Ra3! Qb2 (32...Qa3 33.Qf6 Mate attack) 33.Re3! (33.Re3 Ra8 34.Re7 Qg2 35.Rg2 cd5 36.Qh7) 1–0. Staffeldt,Sven (1660) – Huebner,Sebastian, Leipzig VfB op, 2005.

3.c5 e6 4.Qa4 Bd7 5.b5 (better 5.Qc2-/+) 5...Nd5 (better 5...dc5!? 6.Nc3 c6-+) 6.e4= Nf4 7.e5 (7.cd6!? Bd6 8.d4=) 7...de5 (7...Qg5 8.Nf3 Qg4 9.Kd1 de5 10.Qe4-/+) 8.Bb2 (8.Qe4 c6-/+ (8...Bc5?! 9.Qb7 Bd4 10.Nc3=)) 8...f6 9.Ne2?? (9.Qe4 Nd5 10.d4-/+) 9...c6 (better 9...Nd3 10.Kd1 Nb2 11.Ke1 Na4-+) 10.Nf4=+ ef4 11.Qf4 cb5 (11...Bc5 12.d4 Bb6 13.Nc3-/+) 12.Nc3 Na6 13.a4 (better 13.d4 Nc7 14.Be2=+) 13...Nb4?? (better 13...e5 14.Qe3 Nc5 15.ab5 Bf5-/+) 14.Qb4+- a6? (14...Rc8 15.d4 b6 16.Bb5 bc5 17.dc5 Bc5 18.Qe4+-) 15.Be2 (15.ab5 b6 16.ba6 Bc5+-) 15...Bc6 (15...ba4 16.Na4 b5 17.Bh5 g6+-) 16.Ne4 (16.ab5 Bg2 17.Rg1 Bd5+-) 16...Be4? (better 16...a5 17.Nf6 Qf6 18.Bh5 Kd7 19.ab5 Bg2 20.Bf6 ab4 21.Ra8 gf6+-) 17.Qe4 Bc5 18.Qb7 (18.Qe6!? Qe7 19.Qe7 Ke7 20.ab5 ab5 21.Bb5 Ra1 22.Ba1 Rd8+-) 18...0-0 19.0-0?? (better 19.Qe4 Qd5 20.Qd5 ed5 21.Bf3+-) 19...Qd2+= 20.ab5?? (better 20.Qe4 Qb2 21.ab5+=) 20...Qe2-+ (20...Qb2 21.Qe4 a5 22.Qe6 Kh8 23.Rab1+=) 21.ba6 Ra7?? (21...Rfb8 22.Qc7 Rc8 23.Qb7-+) 22.Qb3?? (22.Qc6 Qb2 23.Qc5+=) 22...Qh5?? (better 22...Ra6 23.Ra6 Qa6-/+) 23.Qe6+- Raf7? (23...Kh8 24.Rfe1+-) 24.Rfc1 (better 24.a7 Ra8 25.Rfb1+-) 24...Re8?? (better 24...Kh8+-) 25.a7 (better 25.Qe8 Bf8 26.a7 h6+-) 25...Ba7?? (25...Re6 26.a8Q Rf8 27.Qa2=) 26.Rc8 (better 26.Qe8 Rf8 27.Qh5+-) 26...Rc8= 27.Qc8 Rf8 28.Qe6 Qf7 29.Qa6 Qb3 (29...Rd8 30.Bc3= (30.Qa7?? Qa7 31.g3 Qb6-+)) 30.Qa2 (30.Qa7 Qb2 31.Re1 Rd8=) 30...Qa2= 31.Ra2 Bb6 32.g4 g5 (better 32...Rd8 33.Bc3 Rc8=) 33.Bf6?? (better 33.Ra6 Bd8 34.Kg2+=) 33...Rf6-+ 34.Kg2 Rf2?? (better 34...Kf7-+) 35.Rf2= Bf2 36.Kf2 h6 37.h3 Kg7 38.Kf3 Kg6 39.h4 gh4 40.Kg2 Kg5 41.Kf3 h5 42.gh5 Kh5 43.Kg2 Kg4 44.Kh2 h3 45.Kh1 Kg3 46.Kg1 h2 47.Kh1 Kh3 ½-½. MARYMARY – sakuraimasu, ChessWorld.net, 2019.

3.d3 e5=+ 4.Bg5 Be7 5.Nf3 Bf5 (5...0-0 6.e3=+) 6.e4= Bg6 7.Nc3 0-0 8.Nd5?? (better is 8.Be2=) 8...Nd5-/+ 9.cd5 Bg5 10.Be2?? (10.h4 Bf4 11.h5 Bf5 12.ef5 Nd7-/+) 10...c5 (better is 10...f5!? 11.Qc2-+) 11.bc5? (better is 11.h4 Bf4 12.h5-+) 11...Qa5 12.Kf1 Be7 13.cd6 Bd6 14.Qb3 b5 15.g3 (15.Nh4 Nd7-+) 15...Nd7 16.Rb1 a6 17.Kg2 Nc5 18.Qb2 Rfb8 (better is 18...Na4!? 19.Qd2 Qd2 20.Nd2-+) 19.Ne5 Be5 20.Qe5 Qa2 21.Ra1 (21.Qb2 Qa5 22.Rhc1 Ne4 23.de4 Be4 24.Bf3 Bb1 25.Rb1-+) 21...Qe2 22.d4 Be4 23.Kg1 Qf3 24.Qe4 Ne4 25.Rf1 Nd2 26.Re1 Qd5 27.Re2 Qd4 28.Kg2 b4 29.Rg1 b3 30.Ree1 b2 31.Rd1 b1Q 32.Rd2 Qd2 (33.Rb1 Qd5 34.Kh3 Qe6 35.Kg2 Qe4 36.Kh3 Rb1-+; 32...Qbe4 33.Kh3 Qg4 34.Kg2 Qde4 35.Kf1 Rb1 36.Rd1 Rd1) 0-1. MikeLWhit - Chairboy, ChessWorld.net, 2005.

3.d4 Nbd7 4.Nd2 e5 5.e3 (5.Bb2 Be7+=) 5...Be7+= 6.g3 (6.Ngf3 e4 7.Ng5 d5 8.cd5 Bb4+=) 6...Nf8 (6...ed4!? 7.ed4 0-0+=) 7.Bg2= c6 (7...Ng6=) 8.Nh3 (8.Ne2 Ng6=) 8...Ne6 (8...ed4 9.ed4 Qb6 10.Rb1-/+) 9.Bb2 (9.d5 cd5 10.cd5 Nc7=) 9...Qc7 (9...ed4 10.ed4 d5 11.a3+=) 10.a3 (10.d5 Nd8=) 10...0-0 (10...ed4 11.ed4 d5 12.0-0+=) 11.0-0 (11.d5 Nd8=) 11...Bd7 (11...ed4 12.ed4 d5 13.f4+=) 12.Nb3 (12.de5 de5 13.Nf3+=) 12...Ne8 (12...Rfe8 13.Rc1=) 13.f4 (13.de5 Rd8 14.Qh5 g6 15.ed6 Nd6+/- (15...gh5? 16.dc7 N6c7 17.Na5+-)) 13...Bf6 (13...ed4 14.ed4 Nf6 15.f5=) 14.d5 (14.Qd3 ed4 15.f5 Nd8 16.Bd4 Bd4 17.ed4 Nf6+=) 14...Nd8 (14...cd5 15.cd5 Nd8 16.fe5 Be5 17.Be5 de5 18.Nc5+=) 15.Kh1 (15.fe5!? Be5 16.Be5 de5 17.Ng5+=) 15...cd5 16.cd5 (worse is 16.Qd5 ef4 17.Nd4 fg3 18.hg3 Be6 19.Ne6 fe6-+ (19...Ne6?! 20.Qb7 Bb2 21.Qa8+=)) 16...Bb5 (16...ef4 17.Bf6 Nf6 18.Nf4= (worse is 18.gf4 Qc3-/+)) 17.Rf2+= Qe7 18.e4 (18.fe5 Be5 19.Nd4 Bd7+=) 18...g6 (18...ef4 19.Nf4 Bb2 20.Rb2=) 19.Rc2 (19.Qf3 ef4 20.Bf6 Nf6 21.Qf4 Kg7+=) 19...Bd7 (19...ef4 20.Nf4 Bb2 21.Rb2 Rc8+=) 20.Rac1 (20.Qf3 ef4 21.Nf4 Bb2 22.Rb2 Rc8+=) 20...h5 (better is 20...Bh3!? 21.Bh3 ef4+=) 21.Nf2 (21.fe5 Be5 22.Be5 de5+/-) 21...Bg7 (better is 21...ef4 22.gf4 Ba4+/-) 22.Bh3?? (22.fe5 Be5 23.Be5 de5+/-) 22...Bh6 (better is 22...Bh3!? 23.Nh3 ef4 24.Bg7 Qe4 25.Rg2 f3+=) 23.Rc7 (23.Qf3 Ba4+/-) 23...Nc7 (23...f5 24.ef5 Nc7 25.Rc7 ef4 26.fg6 fg3 27.Rd7 Qe8+-) 24.Rc7+- ef4 (better is 24...f5 25.ef5 ef4 26.fg6 fg3 27.Rd7 Qe8+-) 25.Rd7 Qg5 26.Bc1 (26.g4 Bg7 27.Bg7 Kg7 28.gh5 Qh5 29.Qh5 gh5 30.Rd6 b5+-) 26...Qe5 27.g4 Rc8 28.Bg2 f6? 29.Nd3 Rc1? 30.Nbc1 Qc3 31.a4 Nf7? 32.h4 Rc8?? 33.Ne2 Qc2 34.Qc2 Rc2 35.Nef4 Bf4 36.Nf4 Ne5 37.Rd8 Kf7 (37...Kf7 38.gh5 gh5 39.Nh5 Ke7+-). Grzywna,Stanislaw - NN, ZDK-Sarzyna POL, 1983.

3.d4 Bf5=.

3.d4 g6 4.Nc3 Bg7 (4...d5 5.e3=) 5.e4 (5.e3 Ng8=) 5...0-0 (5...c5 6.dc5 (worse is 6.bc5 dc5 7.Qd3 Na6-/+) 6...Ne4 7.Ne4 Ba1 8.Bg5=) 6.Nf3 (6.Rb1 c5 7.Nge2 cb4 8.Rb4 Qc7=) 6...a5 7.b5 c6 (7...Bg4 8.Qd3=) 8.a4 (8.h3 cb5 9.cb5 b6=) 8...Nbd7 (8...Bg4 9.bc6 Nc6 10.Be3+=) 9.Be2 (9.Ra2 cb5 10.cb5 b6=) 9...c5 10.Be3 Ng4 11.0-0 e5 (11...Ne3!? 12.fe3 cd4 13.Nd4 Rb8+=) 12.d5 Ne3 13.fe3 Nb6 14.Bd3 (14.Qc2 f5=) 14...Bh6 (14...Bg4 15.h3 Bd7 16.Qd2+=) 15.Qe1 f5 (15...Bg4 16.Kh1=) 16.Ra2 (16.ef5 gf5 17.Nd2 Qg5+=) 16...f4 17.Nd1 (17.ef4 Rf4 18.h3 Qf8+=) 17...Nd7 (17...Bg4 18.h3 Bf3 19.Rf3+=) 18.Re2 (18.h3 fe3 19.Ne3 Bf4=) 18...b6 (18...fe3 19.Ne3 Nb6=) 19.g4 (19.h3 fe3 20.Ne3 Be3 21.Re3 Ra7=) 19...fg3 (19...fe3!? 20.Rg2 Bf4+=) 20.Qg3 Nf6 21.Qh4 Nh5 22.Qd8 Rd8 23.Ref2 Bh3 24.Re1 Ra7 25.Bf1 Bc8 26.Bg2 Rf7 27.Ref1 Rdf8 28.Ne1 Bg4 (28...Nf6!?+= is an interesting idea) 29.Rf7= Rf7 30.Rf7 Kf7 31.Bf3 Nf6 32.Bg4 Ng4 33.Ng2 Nf6 34.Nf2 g5 35.h3 Kg6 36.Kh2 Kh5 37.Kg3 Bf8 38.Ne1 Kg6 39.h4 Nh5 40.Kh3 Be7 41.Nf3 h6 42.Ng4 Nf6 43.hg5 hg5 44.Nf6 Bf6 45.Kg4 Be7 46.Ng1 Bf6 47.Ne2 Be7 48.Ng3 Bf8?? 49.Nf5+– Kf6 50.Kh5 Be7 51.Kh6 Bf8= 52.Kh7 g4 53.Kg8 Be7 54.Kh7 Bf8 55.Ng3 Kg5?? 56.Kg8+– Be7?! 57.Kf7 Bd8 58.Nf5 Kh5 59.Ke6 Bh4 60.Kd6 g3 61.Ng3! Bg3 62.Kc6 Kg4 63.Kb6 Kf3 64.Kc5 Ke4 65.b6 Bf2 66.d6 Be3 67.Kb5 1–0. Zielke,Bernd (1730) – Meyer,Ralf, Schleswig Holstein–ch A, 2002.

3.Nf3 a5 A) 4.Qa4 A1) 4...Bd7 5.b5 e5 6.Bb2 Be7 7.d4=; A2) 4...Qd7 5.Qd7 (5.b5 e5 6.Nc3 Be7 7.d4=) 5...Nbd7 6.Nc3 h6 7.ba5=; A3) 4...Nbd7 5.Nc3 (5.d4 e5 6.Nc3 Be7 7.de5+=) 5...e5 6.d4 Be7 7.de5+=; B) 4.b5 e5 5.Nc3 Nbd7 6.e4 Be7 7.Be2=.

3.Nf3 c5 A) 4.a3 Nc6 (4...cb4 5.ab4 d5 6.c5 Bf5 7.Bb2=) 5.b5 (5.d4 cd4 6.Nd4 Nd4 7.Qd4+=) 5...Na5 6.d3 a6 7.Nc3=; B) 4.bc5 dc5 5.e3 (5.Qa4 Nc6 6.Bb2 Bd7 7.Qb3=; 5.Qb3 Nbd7 6.Bb2 e6 7.g3=; 5.Bb2 Nc6 6.Qb3 e6 7.d3+=; 5.Qc2 Nc6 6.Bb2 e6 7.g3+=) 5...Nc6 6.d4 Bf5 7.Be2=; C) 4.Qa4 Bd7 (4...Nc6 5.b5 Nd4 6.Nd4 cd4 7.Bb2=; 4...Nbd7 5.bc5 dc5 6.Nc3 g6 7.Ba3=) 5.b5 (5.Qb3 cb4 6.Qb4 Nc6 7.Qb2+=; 5.Qa3 e5 6.bc5 e4 7.Qe3=) 5...e5 6.Nc3 Bg4 7.h3=; D) 4.b5 D1) 4...e5 5.Nc3 (5.d3 Be7 6.g3 a6 7.ba6=) 5...h6 6.e4 a6 7.ba6=; D2) 4...g6 5.Nc3 (5.Bb2 Bg7 6.e3 0-0 7.Be2=; 5.e3 Bg7 6.d4 a6 7.Bd3=; 5.d4 cd4 6.Nd4 Bg7 7.e3+=; 5.g3 Bg7 6.Bb2 a6 7.Bg2=) 5...Bg7 6.Bb2 Nbd7 7.e3=.

3.Nf3 Nc6 4.d4= (4.b5 Ne5 5.Ne5 (5.e3 Nf3 6.Qf3 c6 7.d4=) 5...de5 6.Bb2 e4 7.d4=) 4...Bf5 (4...e5 5.d5 Nb8 6.Nc3= a5 7.Qa4=; 4...a6 5.Nbd2 (5.Nc3 d5 6.Nd5 Nd5 7.cd5=; 5.e3 Bg4 6.a3 e5 7.d5=; 5.d5 Ne5 6.Ne5 de5 7.Nc3=; 5.a3 Bf5 6.d5 Ne5 7.Nd4=) 5...e6 6.e4 d5 7.e5=; 4...Bg4 5.Nbd2 (5.Nc3 e6 6.b5 Na5 7.e4=; 5.b5 Nb8 6.h3 Bf3 7.ef3=) 5...e6 6.b5 Ne7 7.e4=) 5.a3 (5.Nh4 Bd7 6.b5 Na5 (6...Nb8= 7.Nf3=) 7.e3=; 5.d5 Ne5 6.Nd4 Bd7 7.e3=; 5.e3 a5 6.Nh4 Be4 7.f3=) 5...g6 (5...e6 6.e3= Qd7 7.Nh4=) 6.e3 (6.d5 Nb8= 7.Nd4=) 6...Bg7 7.Bd3 (7.Nc3 e5=) 7...Bd3 8.Qd3 e5 9.Nc3 ed4 (9...0-0 10.0-0=) 10.ed4 0-0 11.0-0 a5 (11...d5 12.c5+=) 12.b5 Ne7 13.Bg5 Qd7 (13...d5 14.Rfe1+=) 14.Bf6 (14.Rfe1 Rfe8+/–) 14...Bf6+/– 15.Rfe1 Nf5 (15...Rfe8 16.Ra2+/–) 16.Nd5 (16.Ra2 Rae8 17.Rae2 Re2 18.Re2 c6+=) 16...Bg7 17.b6 (17.Rab1 Rae8+/–) 17...c6 (17...c5 18.Rad1 cd4 19.g4+/–) 18.Nc7 Rac8 19.Rac1 (19.Rad1 Bf6 20.Qc3 Bd8 21.Qa5 Bc7 22.bc7 Qc7 23.Qc7 Rc7+=) 19...Bf6 20.d5 c5 21.Nd2 (21.Rb1 Bd8+=) 21...Nd4 22.Ne4 (22.Rb1 a4+/–) 22...Bg7 23.Rb1 Qf5 (23...Rcd8 24.Nd2+/–) 24.a4 Rfd8 25.Qd2 Be5 26.h3 h5 (26...Rd7 27.Nb5+=) 27.Kf1 (27.Qa5 Nc2 28.Re2 Nd4+=) 27...Rb8 (27...Rd7 28.Nb5+/–) 28.Nb5 (28.Qa5 Nc2=) 28...Rbc8 (28...Ra8 29.Nd4 Bd4 30.Rb5+/–) 29.Nd4 cd4 30.Qd3 (worse is 30.Qa5 Rc4 31.Rb4 Rc2+=) 30...h4 31.Rb5 Qf4 32.Nd2 Re8 33.Nf3+/– Bf6 34.Rbb1 Kg7 35.Re8 Re8 36.Rd1 Re4 37.Kg1 Bd8 38.Rb1 Kh6 39.Ne1 Bf6 40.Ra1 Re7 41.Rd1 Kg7 42.Qc2 Qe5 43.Nf3 Qe4 44.Qe4 Re4+= 45.Nd2 Re2 46.Kf1 d3 47.Nb3 Bc3 48.Nc1 Rc2 49.c5 d2 50.Nb3 dc5 51.Nc5 Bb4 52.Nd7?? f6-+ 53.Ke2 Rc8 54.Rd2 (54.Rd2 Bd2 55.Kd2-+). Deluchey,Jean_Philippe (1700) – Inving,Yugi, FICGS, 2008. (=1.c4 Nf6 2.b4 d6)

3.Nf3 d5 4.cd5 Nd5 5.a3 (5.b5 Bf5 6.Bb2 e6 7.Nc3=; 5.Qb3 e6 6.a3 a5 7.ba5=) 5...a5 6.e4 Nf6 7.Qa4=.

4.b5 a6 5.Bb2 e5 6.d4 ed4 7.Bd4 c5 8.Be3 (8.Bb2 d5=) 8...Be7 (better is 8...Ng4!? 9.Nd2 Ne3 10.fe3 Ra7-+) 9.Nf3 0-0 10.Qc2 (better is 10.Nc3=) 10...ab5-+ 11.cb5 Bb5 12.Qb3 Bc6 13.Qc4 (13.Bg5 b5-+) 13...Ra4 (better is 13...Nd5 14.Bd2 Bf6-+) 14.Qc3?? (better is 14.Qb3-+) 14...Nd5 15.Qd3 (15.Qc1 Ne3 16.Nc3 Ra3-+) 15...Ne3 16.Qe3 (16.Nc3 Ra3 17.Nd2 Bf6-+) 16...Bf6 17.Nc3 Bc3 (better is 17...Ra3 18.Rc1 Qa5-+) 18.Qc3 Re8 19.e3 Nd7 20.Bc4 Nf6 21.Nh4?? (better is 21.0-0-+) 21...Ne4 22.Qc2 Qh4 23.g3 Qf6 24.0-0-0 Nf2 25.Rdf1 Bh1 26.Rf2 Qa1 27.Kd2 Re7 28.Qa4 h6 29.Qa8?? Kh7-+ 30.Bd3? g6 31.Qf8 Qa2 32.Bc2 Qd5 33.Ke2 Re3 34.Ke3= Qd4 35.Ke2 Qe5 36.Kd2 Qg5?? (37.Rf4 Bd5 38.Qd6 Be6+-; better is 36...Qd4 37.Ke1 Qc3 38.Rd2 Qe3 39.Re2 Qc3 40.Kd1 Qa1 41.Kd2 Qa5 42.Ke3 Qc3 43.Kf2 Qd4 44.Kf1 Qf6 45.Kg1 Qa1 46.Kf2 Qf6 47.Kg1 Qa1 48.Kf2 Qf6 49.Kg1=) 0-1. cheeze13 - maxum, Caissa.com, 2004.

4.b5 a6 5.e3 c6 6.bc6 Bc6 7.Qc2 Nbd7 8.f4 e5 9.fe5 Ne5 (9...de5 10.d4-/+) 10.d4=+ Be4 11.Qa4 Bc6 (better is 11...Ned7=+) 12.Qb4?? (12.Qc2 Ng6 13.Bd3=+) 12...d5 (12...Bg2 13.de5 Bh1 14.ef6 Qf6-/+) 13.c5-/+ Ng6 (13...Ned7 14.Bd3=+) 14.Qb6 (14.Bd3!?=+) 14...Qb6-/+ 15.cb6 Bb4 (15...Nd7 16.Bd3-/+) 16.Bd2=+ Bd2 (16...Bd6 17.Nc3-/+) 17.Kd2 (17.Nd2 Kd7=) 17...Ne4 (17...Nd7 18.Nf3-/+) 18.Ke1=+ 0-0 19.Nf3 (19.Nd2 f5=) 19...Rae8 20.h4 (better is 20.Bd3!?=) 20...Ng3-/+ 21.Rh3 Nf1 22.Kf1 Re3 23.h5 Nf4 24.Kf2? Nh3 25.Ke3-/+ Re8 26.Ne5 f6-+ 27.gh3 fe5 28.Nd2 e4 29.Rg1 Rf8 30.h6 g6 31.Rg5 Rf6 32.h4 Kf7 33.h5 a5 34.Nb3 Rf3-+ 35.Ke2 a4 36.hg6-/+ hg6 37.Rg2?? ab3-+ 38.ab3 Bb5 39.Ke1 Rh3 40.Rf2 Kg8 41.h7 Rh7 42.Rf6 Kg7 43.Re6 Rh1 44.Kf2 Rf1 45.Ke3 Rf3 46.Kd2 Rd3 47.Ke2 Rb3 48.Kf2 e3 49.Re3 Re3 50.Ke3 Kf6 51.Kf4 g5 52.Kg4 Bd7 53.Kh5 Kf5 54.Kh6 g4 55.Kg7 g3 56.Kf7 g2 57.Ke7 Bc6 (58.Kd6 g1Q-+) 0-1. xCalvin - Chairboy, ChessWorld.net, 2005.

4.b5 b6 5.h3 Ne4 (5...a6 6.Nf3=+) 6.e3 Nc5 (6...e5 7.Nf3=) 7.Qc2+= Be6 (7...e5!?+=) 8.d4+- Ncd7? (better 8...Nb7+-) 9.c5?? (better 9.d5+-) 9...dc5 10.Nf3 (better 10.Be2 c6 11.Bf3=) 10...f6?? (10...cd4 11.Nd4 Bd5 12.Nc3=+) 11.Bc4 (better 11.Qe4 c6 12.Qe6+-) 11...Bf7?? (better 11...Bc4 12.Qc4 a6=+) 12.Bf7+- Kf7 13.Qb3?? (13.Qe4 c6 14.bc6 Nc6 15.Qc6 Rc8+-) 13...Ke8?? (13...e6 14.d5 Qe8 15.Nc3=) 14.0-0?? (better 14.Qd5 Na6 15.ba6 cd4 16.ed4+-) 14...e6?? (better 14...a6=) 15.Qe6+- Qe7 16.d5 (better 16.Qd5 c6 17.bc6 Nc6 18.Qc6+-) 16...Qe6 17.de6 Ne5 18.Ne5 fe5 19.f4 ef4 (19...a6 20.Nc3=) 20.Rf4 (20.ef4!? c6 21.Nc3+=) 20...Bd6=+ 21.Rf7?? (better 21.Re4=+) 21...g6?? (21...Be5 22.Bd2 Ba1-/+) 22.Bb2+- Rf8 23.Rh7 c4 (23...a6 24.Nc3 Rf6 25.ba6 Re6 26.Rh8 Kd7 27.a7 Ra7 28.Rb8 Re3 29.Kf1+-) 24.Bg7 (better 24.Nd2!? a6 25.Nc4+-) 24...Rf5+- 25.Rh8 (25.Nd2!? Rb5 26.Bf6+-) 25...Ke7+= 26.e4 (better 26.Nc3 Ke6 27.g4+=) 26...Be5?? (26...Rb5 27.Nd2 Be5 28.Be5 Re5 29.Rh7 Ke6 30.Rc7 b5+-) 27.Be5 (better 27.ef5!? Bg7 28.Rh7 Kf6+-) 27...Re5 28.Nc3 Re6 (28...a6 29.Nd5 Kd6+-) 29.Nd5 Kd7 30.Rh7 Kc8 31.Rc7 (better 31.Nc7!? Rd6 32.Na8 Rd7 33.Rd7 Nd7+-) 31...Kd8 32.Re1 (better 32.Rh7 Re4 33.Rd1 Nd7+-) 32...Nd7 33.Rd1 Re4 34.Nf6?? (better 34.Rc6 Rc8 35.Rg6+-) 34...Kc7=+ 35.Ne4 Ne5 (35...a6 36.a4 ab5 37.ab5=+) 36.Rd6 g5?? (36...Re8 37.Rd4=) 37.Rf6 (better 37.Re6 Nd7 38.Rc6 Kd8 39.Rc4+-) 37...Rd8= 38.Rf7?? (38.Ng5 Rd5=) 38...Kb8 (better 38...Nf7 39.Kf2 Rd3-+) 39.Rf5+= Rd5 40.Rg5?? (40.Nc3 Rc5=) 40...Rb5?? (better 40...Nf3 41.gf3 Rg5 42.Kf2 Rb5-+) 41.Nd6?? (41.h4 a6=) 41...Rb1 (better 41...Nf3! 42.Kf2 Rg5-+ (worse 42...Ng5 43.Nb5 a6 44.Nd4+=)) 42.Kh2 Nd3 (better 42...Rd1!?=) 43.Rg8 (43.Nc4 Ra1 44.a3 a6+-) 43...Kc7 44.Ne8?? (better 44.Nc4 b5 45.Rg7 Kc6 46.Na3+-) 44...Kd7 45.Nf6 Ke7 46.Nd5 Kf7 (46...Ke6 47.Nc3 Rb2 48.Re8 Kd6 49.Re4-/+) 47.Ra8=+ Nf2 (47...a5!?=+) 48.Ra7 Ke6 49.Nf4 Ke5 50.Rf7 (50.Kg3 Nd3 51.Re7 Kd4 52.Ne2 Kc5+=) 50...Rh1 51.Kg3 Ne4 52.Kg4 Nf6 53.Kf3?? (better 53.Kg5 Ne4 54.Kg6=) 53...Rf1-+ 54.Ke3 Rf4 55.Re7 Kf5 (better 55...Kd6!? 56.Kf4 Ke7 57.a3-+) 56.g4 Ng4 (better 56...Kg6!? 57.Kf4 Nd5 58.Ke4 Ne7-+) 57.hg4-/+ Kg4?? (57...Rg4!? 58.Rb7 Rg6-/+) 58.Rb7 (better 58.Rg7 Kf5 59.Rf7 Ke6 60.Rf4+-) 58...Rf3 59.Ke2 (59.Kd4 Ra3=) 59...Ra3=+ 60.Kd2 Ra2 (60...Kf4 61.Rb6 Ke4 62.Kc2=+) 61.Kc3= Kf3 62.Kc4 b5 63.Rb5 Rc2 64.Kd4 Rd2 65.Ke5 Re2 66.Kf5 Re4 67.Re5 Do you see the mate threat? 67...Rf4 68.Ke6 Kg4 ½-½. MARYMARY - nelly_the_pawn, ChessWorld.net, 2011.

(--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6).

4.e3 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7).

4.Bb2 Bg7 5.d4 0-0 6.e3 a5 7.b5 c6 8.a4 Nbd7 9.Nf3 Re8 10.Be2 e5 11.0-0 h6 12.Re1 Kh7 13.Qc2 Re7 14.Bd3 d5 (better 14...Qe8!? 15.de5 Ne5 16.Ne5 de5+=) 15.de5 Ne5 16.Ne5 Re5 17.cd5 cd5 18.Ne2 Re8 19.Red1 Be6 20.Nf4 Rc8 21.Bg6 (better 21.Bc3!?+=) 21...fg6 22.Qg6 Kg8 23.e4? (better 23.Ne6 Re6 24.Rac1=+) 23...Bf7-+ 24.Qg3 Re4 25.Nd5 (25.f3 Rec4-+) 25...Bd5 26.Ra3 (26.Rd5 Qd5 27.Bf6-+) 26...Qe7 (better 26...Nh5 27.Qf3 Re1 28.Re1 Bf3 29.Bg7-+) 27.h3 Nh5 (better 27...Rd8 28.Bf6 Qf6-+) 28.Qd3 (28.Rd5 Re1 29.Kh2 Ng3 30.Rg3-+) 28...Re1 29.Kh2 Rd8 (29...Qd6 30.g3 Rf8 31.Bd4 Bd4 32.Qd4-+) 30.Bg7 Ng7 (30...Qg7!? 31.Qd5 Rd5 32.Re1-+) 31.Raa1 (31.Re1 Qe1 32.Qg3 Qe4-+) 31...Qe5 32.g3 (32.Qg3 Qg3 33.Kg3 Re2-+) 32...Re2 (32...Qb2 33.Qd4 Rh1 34.Rh1 Qd4 35.Rhf1-+) 33.Rf1 (33.Kg1-+) 33...Rf8 34.Kg1 Ref2! 35.Rf2 (35.Rf2 Qa1 Double attack (35...Qa1 Deflection; 35...Qa1 Overloading)) 35...Qa1 36.Rf1 Qf1 37.Qf1 0-1. Minister007 (2365) - gmftorres1 (2420), Rated blitz game, lichess.org, 2020.

4.e4 Bg7 5.d3 Ne4 6.de4 Bc3 7.Bd2 Ba1 8.Qa1 e5 9.Nf3 Nd7 10.Bd3 Qe7 11.Bg5 f6 12.Bh4 c6 13.0-0 0-0 14.Nd2 Nb6 15.a4 Nd7 16.f4 a5 17.b5 c5 18.f5 Nb6 19.fg6 hg6 20.Qe1 Be6 21.Bc2 Nc4 22.Nc4 Bc4 23.Qg3 Bf1 24.Kf1 Qf7 25.Ke2 Qc4 26.Kd2 Qd4 0–1. ahmed sharkawy_1 – Chairboy, ChessWorld.net, 2005.

4.de5 Nc6 5.Nf3+=.

4.de5 de5 5.Qd8 Kd8 6.a3 a5 7.b5 Nbd7 8.Nc3 Bc5 9.Bg5 h6 10.Bh4 Bd4 11.Rc1 Nc5 (11...g5 12.Bg3=) 12.e3 Nb3?? (12...Bc3 13.Rc3 g5 14.Bg3=) 13.Rc2?? (better 13.Rd1 g5 14.Bg3+-) 13...Bf5= 14.Bf6 gf6 15.e4 Bg6 16.Nd5? (better 16.Nge2=+) 16...Be4-+ 17.Re2 Bd3 18.Nf6 Be2 19.Ne2 (19.Be2 a4-+) 19...a4 (better 19...Bb2!? 20.a4 Nc5 21.Kd2-+) 20.Nd4 ed4 21.Bd3 c6 22.0-0 Ke7 23.Nh5 Nc5 24.Bc2 d3 25.Bb1 Rad8 26.Rd1 Rhe8 27.Kf1 Kf8 28.bc6 bc6 0-1. Minister007 (2355) - treningowekonto (2350), Rated blitz game, lichess.org, 2020.

4.Bb2 Bg7 5.e3 0-0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4).

4.Nc3 Bg7 5.Nf3 0-0 6.e4 Nc6 7.b5 Nb8 8.Bd3 a5 (8...c5 9.bc6 Nc6 10.0-0+=) 9.0-0 Re8 10.a4 b6 11.e5 Nfd7 12.Be4 de5?? (better is 12...Ra7 13.Bf4 Bb7+/-) 13.Ba8+- (13...ed4 14.Nd4+-). tired rook - 2good2be1, ChessWorld.net, 2004.

4.d4=+.

4.Be2 e4 5.Bb2 Be7 6.d3 d5 7.cd5 Bb4 8.Bc3 Bc3 (8...Nd5!? 9.Bb4 Nb4 10.de4 Be6 11.Bb5 N8c6 12.Bc6 Nc6-/+) 9.Nc3= Nd5 10.Nd5 (10.Ne4 0-0=) 10...Qd5=+ 11.de4 Qe4 12.Nf3 Qb4 13.Nd2 0-0 14.0-0 (14.Qc2 c5=+) 14...Bf5 (14...Rd8 15.Qb3 Qd2 16.Rfd1+=) 15.Bf3 (15.a3 Qd6=+) 15...Rd8-/+ 16.a3 Qd2 (16...Qb2 17.Nc4 Qf6 18.Qb3=+) 17.Bb7 (better is 17.Qd2!? Rd2 18.Bb7=) 17...Qd1-/+ 18.Ba8?? (better is 18.Rfd1 Nd7 19.Ba8 Ra8 20.Rac1-/+) 18...Qc2 19.Rfc1 Qb2 20.Rab1 (20.e4 Nd7 21.Bd5-+) 20...Bb1 21.Re1 Rd2 (21...Qe2 22.Rf1-+ (22.Re2?? Rd1 23.Re1 Re1)) 22.f4 Rg2 (better is 22...c6 23.Kh1-+) 23.Bg2 Bd3 24.Rd1 Qe2 25.Ra1 Qe3 26.Kh1 Be4 27.Rg1 Bg2 28.Rg2 Qf4 29.Rb2 c5 30.Kg1 Qd4 31.Rf2 f5 32.Kg2 f4 (33.Kf1 Qe4-+) 0-1. Tricky Rabbitt - xCalvin, ChessWorld.net, 2005.

4.Qa4 Bd7 5.b5 Bg7 6.Bb2 0-0 7.Qb3 c6 8.Qc3 (8.Nf3 cb5 9.cb5 Bf5=+) 8...e5 9.f4 (9.d4 cb5 10.cb5 Nd5=+) 9...Re8 (9...ef4 10.ef4 Re8 11.Kd1-+) 10.c5 (10.fe5 de5 11.Nf3 e4-/+) 10...Nd5 11.Qc4 ef4 12.Bg7 Kg7 13.cd6 (13.bc6 Bc6 14.Nc3 Qh4 15.Kd1 Qf6 16.ef4 dc5-+) 13...fe3 (13...Qf6 14.Nc3 fe3 15.Nf3-+) 14.Qd4 Qf6 (better is 14...f6-+) 15.Ne2?? (better is 15.Qf6 Kf6 16.Nf3-+) 15...ed2 16.Nd2 (16.Kd1 Ne3 17.Kd2 Nf1 18.Rf1 Re2 19.Kd3 Qd4 20.Kd4 Rg2 21.Rh1-+) 16...Qd4 17.Rd1 Nf4 (17...Nb4 18.Rc1-+) 18.Nf3 Nd3 (18...Qc3 19.Kf2 Qe3 20.Kg3 Nh5 21.Kh4 Qe4 22.Nf4 Qf4 23.g4 Qg4) 19.Rd3 Qd3 20.h3 cb5 21.Kf2 Nc6 22.Ng3 Qe3 0-1. ian5300 - Chairboy, ChessWorld.net, 2005.

4.d4= e5 5.de5 de5 6.c5 (6.Qd8!? Kd8 7.c5=) 6...Qd1=+ 7.Kd1 Bf5 (7...a5 8.Bb2 Ng4 9.Ke1 ab4 10.h3=) 8.Be2 (8.Bb2 Nc6-/+) 8...Bg7 (8...Nc6 9.Bb2-/+) 9.Bb2 Nbd7 10.Nf3 0-0-0 (10...a5 11.Ne5 Ne4 12.Nf7 Bb2 13.Nh8 Ba1 14.Rf1 Bh8 15.g4 Nf2 16.Rf2 Bb1 17.c6 bc6 18.ba5 Ba2 19.a6-+) 11.Nbd2 e4 (11...Ng4 12.Ke1=+) 12.Nd4 (12.Ng5 Rhf8 13.Nh7 Rh8+/-) 12...Nd5 (12...Bg4 13.c6 Be2 14.Ke2=) 13.Rb1 (13.g4 Be6 14.Ne6 Bb2 15.Nd8 Rd8=) 13...Rhg8 (13...N7f6 14.Nf5 gf5 15.c6=) 14.Nf5 (better is 14.g4!? Bg4 15.Bg4+-) 14...gf5= 15.Bg7? (better is 15.Rg1!?=) 15...Rg7-/+ 16.g3 (16.Ke1 Nc3 17.c6 Nb1 18.cd7 Kd7 19.Nb1 Rg2-/+) 16...Nc3 17.Kc2 Nb1 18.Rb1 Ne5 19.a4 (19.f3 f4 20.gf4 ef3 21.Nf3 Rg2 22.Ne5 Re2 (22...Rh2? 23.Re1+-) 23.Kc1 f5-+) 19...Ng4 20.Bg4 Rg4 21.h4 Rd3 22.Nc4 f6 23.b5 Rd7 24.c6-/+ bc6 25.bc6 Rd5 26.Kc3 Rd3 27.Kb4 Rg8 28.Kc5 Rgd8 29.Rb7 R8d5 30.Kb4 a6 31.Ra7= Kb8 32.Rb7 Kc8 33.Ra7 Kb8 34.Rb7 Kc8 35.Ra7 a5 36.Na5 Kd8 37.Nb7 Ke7 38.Nc5 Rc5?? 39.Kc5+- ½-½. Tricky Rabbitt - Chairboy, ChessWorld.net, 2005.

3.Ba3 b6 4.b5 (4.Nf3 e4 5.Nd4 Bb7=+) 4...Bc5 (4...Ba3 5.Na3 a6 .Nc2-/+) 5.Bc5=+ bc5 6.e3 0-0 7.Ne2 (7.Nc3 c6=+) 7...c6 8.Nec3 d5 9.bc6 Nc6 (9...d4!? 10.Qf3 Bg4=+) 10.cd5= Nd5 11.Nd5 Qd5 12.Nc3 Qd7 13.Bb5 Qe6 14.Bc6 Qc6=+ 15.0-0 Bb7 16.f3 f5 17.Qb3 c4 18.Qb5 Qb5-/+ 19.Nb5 a6 20.Nc3 Rad8 21.Rf2 h6 22.Rb1 Bc6 23.Kf1 Rd6 24.Rb4+= Bb5 25.Nb5 ab5 26.Rb5 e4 27.fe4 fe4 28.Rf8 Kf8 29.Ke2 Ra6 30.Rb2 Ke7 31.Rb4 Rc6 32.a4 c3? 33.Re4+– Kf6 34.dc3 Rc3 35.Kd2 Ra3 36.Ke2?? h5?? 37.Kf3 g5 38.h3 Ra1 39.Rb4 Rf1 40.Ke2 Ra1 41.Rb6 Ke5 42.Rb5 Kf6 43.Ra5 g4 44.hg4 Ra2 45.Kf3 hg4 46.Kg4 Rg2 47.Kf3 Ra2 48.Ra6 Ke5 49.a5 Ra3 50.Ra8 Kd6 51.Kf4 Kc6 52.e4 Kb7 53.Re8 Ra5 54.e5 Kc7 55.Kf5 Kd7 56.Rh8 Ra6 57.Rf8 Ke7 58.Rf6?? Rf6= 59.ef6 Kf7 60.Kg5 Kf8 61.Kf4 Kf7 62.Ke5 Kf8 63.Ke6 Ke8 64.f7 Kf8 65.Kf6 ½–½. kissybingo – jolaw, internet, 2006.

3.Ba3 d5 4.cd5 Nd5 5.b5-/+.

3.Bb2 d6 4.e3 g6 5.Nf3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

3.Qb3 d6 4.d3 Be6 5.a4 Nc6 6.Nf3 Be7 7.g3 d5 8.Bg2 (8.c5 d4 9.Qb2 Nd5-/+) 8...Bb4 (8...dc4 9.dc4 e4 10.Ng5 Bb4 11.Bd2-+) 9.Bd2-/+ Bd2 10.Nbd2 0-0 (10...Rb8 11.0-0-/+) 11.0-0 (11.Qb7 Na5 12.Qa6 e4 13.Qa5 ef3 14.Bf3 Re8+/–) 11...Qc8 12.Rfc1 h6 (12...e4 13.Ng5-/+) 13.cd5 Bd5 14.Qc3 Be6 (better is 14...Qe6-/+) 15.Ne5+= Ne5 16.Qe5 c6 17.Ne4 Ne4 18.Be4 Re8 19.Qf4 Qd7 20.Rc5 Qe7 21.Rac1 Rad8 22.Rh5 Rf8 23.g4 Qd7 24.g5 Bg4 25.Rh4 Be2 26.gh6 f5 27.hg7 Qg7 28.Bg2 Rd4?? (better is 28...Bd3 29.Qg3 Qg3 30.fg3 Rfe8-/+) 29.Qd4+– Qd4 30.Rd4 Bh5 (30...Re8 31.Rd7 Rb8 32.Rb1+–) 31.Rd7 Rb8 (31...Rf7 32.Rf7 Kf7 33.Rb1+–) 32.Rb1 Be2 33.Rbb7 (33...Rb7 34.Rb7+–) 1–0. Freyser – Argento1960, ChessWorld.net, 2004.

3.b5 a6 4.e3 (4.Bb2 d6=+) 4...ab5-/+ 5.cb5 d5 6.d4 Bb4 (6...Bd6 7.Nf3 e4 8.Ne5-/+) 7.Bd2=+ Qd6 (7...Bd2 8.Qd2 Ne4 9.Qb2=+) 8.Qb3 (8.Bb4 Qb4 9.Qd2 Qe7=+) 8...Bd2-/+ 9.Nd2 e4 (9...ed4!? 10.ed4 0-0-/+) 10.Rc1=+ Ra3 (10...0-0 11.Qc2=+) 11.Qb2 (11.Qc2 c6=) 11...0-0 12.Rc3 (12.Be2 Be6=+) 12...Rc3=+ 13.Qc3 Nbd7 14.a4 b6 15.a5 (15.Be2 Bb7=+) 15...ba5 16.Qa5 Nb6 (16...Bb7 17.Ne2=+) 17.Nb3 (17.Qc3 Bg4=+) 17...Bb7 (17...Bf5 18.Nc5=+) 18.Nc5= Ra8 19.Nb7 Ra5 20.Nd6 cd6 21.Kd2 Ra2 22.Kc1?? (22.Ke1 Rb2-/+) 22...Ng4 23.Kb1? Rf2-+ 24.Ne2 Ne3 25.h4 Nf1 26.Nc3 Nd2 27.Kc1 Nb3 28.Kd1 Nd4 29.g4 Rc2 30.Nb1 Rb2 31.Nc3-+ Rb3 32.Kd2 Nc4 33.Kd1 Rc3 34.Rh2 Ne3 35.Kd2 Rd3 36.Ke1 Nf3 37.Ke2 Nh2 (38.b6 Nc4 39.Kf2 Rd2 40.Kg3 Nf1 41.Kf4 Rf2 42.Kg5 h6 43.Kh5 Ng3) 0–1. guest474 – Charlie, ICC, 1997.

3.b5 c5 4.Bb2 (4.Nc3 d5=+) 4...d6 5.e3 (5.Nc3 Be7=+) 5...a6 (5...Be7 6.d4 ed4 7.ed4=+) 6.a4 (6.ba6 Na6 7.d4 ed4 8.ed4 Be7=+) 6...Be7=+ 7.g3 (7.Be2 0-0=+) 7...ab5 (7...0-0 8.Bg2=+) 8.ab5 Ra7?? (better is 8...Ra1 9.Ba1 Be6=+) 9.Ra7+– (9.Ra7 0-0 10.d3+–) 1–0. hal1958 – shepherd, playchess.de, 2002.

3.b5 c6 4.Bb2 d6 (4...Bc5 5.e3 (worse is 5.Be5 Bf2 6.Kf2 Ng4 7.Kg3 Ne5-/+) 5...Qe7 6.d4 ed4 7.Bd4=) 5.d4= cb5 6.de5 (6.cb5 Qa5 7.Qd2 Qb5+=) 6...Qa5 (6...Ne4 7.cb5 Qa5 8.Bc3 Nc3 9.Qd2-/+) 7.Qd2= (7.Qd2 Qd2 8.Nd2 de5 9.Be5 bc4 10.Bf6 gf6 11.Nc4=). DEFFM – GuestGTPJ, freechess.org, 2018.

3.b5 e4 4.e3 (4.d4 ed3 5.Qd3 Bb4 6.Nc3 d5=+) 4...d5 (4...a6 5.Nc3=+) 5.Ba3 (5.cd5 Nd5 6.Bb2 Be6=+) 5...Ba3 (5...Bg4 6.f3 Ba3 7.Na3=+) 6.Na3=+ 0-0 (6...c5 7.cd5 0-0 8.Bc4=+) 7.cd5 Nd5 8.Bc4 (8.d3 Qe7 9.Qb3 Rd8=+) 8...a6 (8...Nb6 9.f3-/+) 9.f3 (9.Qc2 Bf5-/+) 9...ef3 (9...Nb6 10.d3-/+) 10.Qf3 (10.Nf3!? ab5 11.Nb5=+) 10...ab5 11.Nb5?? (better is 11.Bd5 Ra3 12.Ne2-/+) 11...c6 12.Bd5= cd5 13.Ne2 Ra5 14.Nbd4 Be6 15.0-0 Nd7 16.Rab1 Ne5 17.Qh5 Qc7? 18.Ne6+– fe6 19.Rf8 Kf8 20.Qh7 Ra2 21.Rc1 Qd7 22.Rf1 Ke7+/– 23.Qg7 Kd6 24.Qd7 Nd7 25.Rd1 b5 26.Nc3 Rb2 27.Rb1 Rb1 28.Nb1 b4 29.Kf2 Nc5 30.Ke2 b3 31.d4 Na4 32.Kd2 b2? 33.Kc2+– Kc6 34.Kb3 Kb5? 35.h4 (35...Nb6 36.h5+–) 1–0. cdamien – samk, ICC, 2003.

3.Nc3 Nc6 4.b5 Na5 5.c5 (better is 5.e4!?=) 5...Bc5-/+ 6.Qa4 Bb6 7.Nf3 0-0 (7...d6!?-/+) 8.Ne5=+ d6 9.Nc4 (9.Nf3 Bd7=+) 9...Nc4-/+ 10.Qc4 Be6 11.Qh4 (11.Qf4 Re8=+) 11...Bg4 (better is 11...Ng4!? 12.Qd8 Bf2 (12...Rad8?! 13.e3=; 12...Rfd8?! 13.e3=) 13.Kd1 Rad8-/+) 12.f3 Bh5 (12...Be6 13.Bb2=+) 13.a4 (13.Na4=) 13...Qe7 (better is 13...Bc5=+) 14.a5+/– Bc5 15.g4 (better is 15.Ne4!?+/–) 15...Bg6= 16.Ra4 (better is 16.Bb2=) 16...b6?? (16...Bc2 17.g5 Nd7 18.g6 Qh4 19.Rh4 fg6 20.Bh3=+) 17.a6 (better is 17.d4!? Bc2 18.dc5 Ba4 19.g5+/–) 17...Qe6 18.Re4?? Qb3 19.Re7 Rac8 20.Ne4?? Qb1 21.Kd1 d5 22.Nc3 Qb3 23.Ke1-+ Qc2 24.Nd1 Qc1 25.Qg5 h6 26.Qe5 Bb4 27.Qb2 Qc4 28.e3 Qc5 29.h3 Qe7 30.Rg1 Rce8 31.h4 c5 32.g5 Nh5 33.Nc3 Qe5 34.Qb3 Qh2 35.Rg2 Qh1 36.Rf2 Ng3 37.Qd5 Bc2 38.Ne2 Rd8 39.Qa2 Bd2 0–1. rcarvalho – rlpcarvalho, net–chess.com, 2004.

3.Nc3 d5 4.d3? (better 4.cd5!? Nd5 5.Qa4 c6 6.Nf3=+) 4...Bb4-+ 5.Bd2 dc4 6.dc4 0-0 7.Qb3 Nc6 8.a3 Nd4 9.Qb4?? (better 9.Qb2 Bc5 10.e3-/+) 9...Nc2 10.Kd1 Nb4 (10...Na1?! 11.Qb2-/+) 11.Kc1 (11.ab4 Qd6 12.Nb5-+) 11…Nc6 0-1. don77777 (2075) - Aaron_Whitney (2270), Hourly Bullet Arena, lichess.org, 2021. (=1.c4 e5 2.b4 Nf6)

3.c5 b6 4.Ba3 bc5 5.bc5 d6 6.Qa4 Bd7 7.Qb4 dc5 8.Qb7 (8.Qc4 Be6 9.Qc3 Nc6-/+) 8...Bc6 9.Qb3 Bd6 10.Nf3 (10.Bb2 0-0-/+) 10...0-0 11.e3 (11.Bb2 Bd5 12.Qe3 e4-/+) 11...Bd5 (better is 11...e4 12.Ng5 h6-+) 12.Qd3?? (better is 12.Bc4!? Bc4 13.Qc4-/+) 12...Nc6 (better is 12...e4 13.Qe2 ef3 14.gf3 c4-+) 13.Ng5 e4 14.Qc3 (14.Qb5 Rb8 15.Qa4 Be5-+) 14...Ng4 (14...Be5 15.d4 ed3 16.Qd3 Ba1 17.Bc5-+) 15.Bc5? (15.f4 ef3 16.Nf3 Bf3 17.gf3 Qh4 18.Ke2 Qf2 19.Kd3 Ne3 20.de3 Ne5 21.Qe5 Be5 22.Nc3 Qf3 23.Be2 Qf5 24.Kc4 Qe6 25.Kc5 Bc3 26.Rac1-+) 15...Qg5 16.Bd6 cd6 17.Bb5 Rac8 18.Bc6 Rc6 19.Qb2 Rfc8 20.0-0 Qh5 (20...Bc4 21.Rc1-+) 21.h3 Ne5 22.Rc1 Rc1 23.Kh2 Rf1 24.d4 Nd3 25.g4 Qh4 26.Kg2 Rf2 27.Qf2 Qf2 28.Kh1 Rc1 0–1. xCalvin – MikeLWhit, ChessWorld.net, 2005.

3.c5 Be7 4.Bb2 d6 5.cd6 Bd6 6.a3 0-0 7.d4 ed4 8.Bd4 Nc6 9.Bb2 Qd7 (9...Qe7 10.e3-/+) 10.Nd2 (10.Bf6!? gf6 11.Nc3=) 10...Qe7-/+ 11.e3 Be6 12.Ngf3 Rfd8 13.Be2 a6 14.0-0 b5 (14...Ng4 15.h3 Nge5 16.Qc2=) 15.Qc2= Bd5 (15...Bd7 16.Bd3 Ne5 17.Ne5 Be5 18.Be5 Qe5 19.Nf3+=) 16.Bd3 (better is 16.Bf6!? Qf6 17.e4+/–) 16...Ne5= 17.Ng5?? (better is 17.Ne5 Be5 18.Be5 Qe5 19.Rfc1=) 17...Nd3-+ 18.Qd3 Bh2! 19.Kh2 Ng4 20.Kg1 Qg5 21.e4 Bc4 22.Qg3 Rd2 23.f4 Qh5 24.Bc3 Rd3 (24...Rd3 25.Rf3 Rad8-+) 0–1. jsinger (2030) – silvain (2140), net–chess.com, 2010.

3.e3 Bb4-/+ 4.Ba3 Ba3 5.Na3 c6 6.Be2 d5 7.Qc1 0-0 8.Nf3 e4 9.Nd4 Na6 (9...b6 10.cd5 Qd5 11.f3-+) 10.0-0 dc4 11.Bc4 Nb4 12.Qb2 (12.f3 c5 13.Nb3 ef3 14.Rf3 b6-/+) 12...Nd3 (12...c5 13.f3-+) 13.Qc2 (13.Bd3 ed3 14.Qc3 Qd5-/+) 13...c5-+ 14.Ne2 Nb4 15.Qc3 Nfd5 (15...a6 16.d4 ed3 17.Rfd1-+) 16.Bd5-/+ Qd5 17.Rfd1 Nd3 18.Nb5 Qg5 19.Nc7 Bh3 20.Na8?? Qg2 (20...Ra8?! 21.Ng3 Be6 22.Ne4+=) 0–1. gengar – magne, ChessWorld.net, 2005.

3.e4 Bb4!? 4.Nf3 0-0-+.

3.Nf3 Nc6 4.Nd4?? (better is 4.b5 Na5 5.Qa4=) 4...Bb4 (better is 4...Nd4 5.e3 Ne6 6.Qa4-+) 5.g3?? (better is 5.Nc6 dc6 6.Bb2-+) 5...Nd4 6.Rg1 d6 7.a3 Bc5 8.a4 0-0 9.g4 Ng4 (9...Ng4 10.Rg2 Qf6-+) 0–1. True Blue – curtpaulus, internet, 2007.

3.g3 Bb4 4.Bg2 Nc6 5.Bb2 0-0 (5...d6 6.Nf3-+) 6.Nf3 d5 7.Ne5 Ne5 8.Be5 dc4 9.Nc3 Ng4 10.Bf4 g5 11.Be3 (11.Nd5!? Bc5 12.Be3 Ne3 13.Ne3-/+) 11...Ne3-+ 12.fe3 Bc3 13.dc3 Qe7 14.Qd4 Rd8 15.Qc4 Qe3 (15...Be6 16.Qb4 Qb4 17.cb4-/+) 16.Bd5 (16.Qc7 Bg4 17.Qc4 Be2 18.Qe2 Qc3 19.Kf2-+) 16...b5 (better is 16...Rd7-/+) 17.Bf7= Kg7 18.Qb3 Bg4 19.Qb5 Rd2 (better is 19...Qc3 20.Kf2 Qd4 21.Kg2 Qe4 (21...Kf7?! 22.Rhf1 Ke6 23.Qc6 Ke7 24.Qc7 Rd7 25.Qc2-+) 22.Kf2 Kf7-+) 20.Bc4+= Rb8!! (21.Qa6 Qc3-+) 0–1. Freyser – weBNimzo, ChessWorld.net, 2004.

4.b5 c6 5.e3 d5 6.Bb2 Bd6 7.Nf3 Qe7 (7...e4 8.Ne5=+) 8.d4 e4 9.Nfd2 0-0 10.c5 Bc7 11.b6 Bd8 12.Nc3 Nbd7 13.a4 g6 14.Nb3 Nh5 15.g4 Ng7 16.h4 f5 17.h5 fg4 18.hg6 hg6 19.Qd2 Qg5 20.Rg1 Nf6 21.0-0-0 Ngh5 22.Be2 Bf5 23.Rg2 Qh6 24.Rh1 Exerts pressure on the isolated pawn 24...Nh7 25.Nd1 Ng5 26.Na5 Nf3 27.Qc3 Rf7 28.Kc2 Nh4 29.Rg3 Qg7 30.Rgg1 Nf3 31.Rg2 Nh4 32.Rgh2 (32.Rgg1 Nf3 33.Rg2 Kf8=+) 32...Nf3 33.Rh5?? (better 33.Rg2=) 33...gh5-+ 34.Rh5 Bg6 (34...g3 35.fg3 Qg3 36.Nb7 Rb7 37.Rf5 Qg2-+ (37...Ra4 38.Qb3 Ra8 39.Bf3 ef3 40.Rd5 cd5 41.Qd5 Rf7 42.Qa8+/-)) 35.Rh1 Bf6 36.Kb3 Rb8 37.Kb4 Bf5 38.Nb3 Ra8 39.a5 Qg6 40.a6 ba6 41.Na5 Bd7 42.Bc1 Rh7 43.Rh7 Qh7 44.Bf3 gf3 45.Qe1 Qf7 (45...Kf8!? 46.Kc3-+) 46.Qg1-/+ Kf8 47.Qh2 Ke7?? (better 47...Qe8-/+) 48.b7+- Rg8?? (48...Rd8 49.Qd6 Ke8 50.b8Q Rb8 51.Qb8 Bd8 52.Nb7+-) 49.b8Q (49.Qd6 Ke8 50.b8Q Bd8 51.Qd8 Kd8 52.Nc6 Ke8 53.Qb8 Bc8 54.Qc8) 49...Rb8+- 50.Qb8 Bh4?? (50...Qe6 51.Kc3 Bc8 52.Qc7 Bd7 53.Nb7+-) 51.Qc7 (better 51.Nc6 Bc6 52.Qd6 Ke8 53.Qc6 Qd7 54.Qd7 Kd7 55.Ka5+-) 51...Qe6 52.Nb7 Kf7 53.Nd8 Bd8 54.Qd8 Bc8 55.Nc3 a5 (55...Qf5 56.Qc7 Qd7 57.Qd7 Bd7 58.Ka5+-) 56.Ka5 Bd7 57.Kb6 Be8 58.Qc7 Kg6 (58...Kg8 59.Qd6 Qc8 60.Na2+-) 59.Qd6 Kf6 60.Qe6 Ke6 61.Bd2 Kd7 (61...Kf5 62.Kc7+-) 62.Na4 (62.Na2!? Bf7+-) 62...Bh5 (62...Kc8 63.Ba5+-) 63.Kb7 Bg4 (63...Ke6 64.Nb6 Be8 65.Kc7+-) 64.Nb6 Ke6 65.Kc6 Bh5 66.Nc8 Be8 67.Kc7 Ba4 68.Nd6 Ke7 69.Nb7 Ke8 (69...Ke6 70.c6 Bb5 71.Bb4+-) 70.c6 Ke7 71.Kb6 Ke8 72.c7 (72.Nd6 Ke7 73.Nb5 Bb5 74.Bb4 Kd8 75.Kb5 Kc7 76.Ba5 Kd6 77.Kb6 Ke6 78.c7 Ke7 79.c8Q Kf7 80.Qf5 Kg8 81.Qg6 Kh8 82.Qf6 Kh7 83.Bb4 Kg8 84.Bf8 Kh7 85.Qg7) 72...Bd7 73.Nd6 Ke7 74.Kb7 (better 74.Kc5 Ke6 75.c8Q Bc8 76.Nc8+-) 74...Bc8 (74...Kd6 75.Bb4 Ke6+-) 75.Nc8 Kd7 (75...Kf7 76.Nd6 Kf8 77.c8Q Kg7 78.Qe6 Kh7 79.Nf5 Kh8 80.Qe5 Kh7 81.Qg7) 76.Nb6 (76.Bb4 Ke6 77.Ne7 Kf7 78.c8Q Kf6 79.Qf5 Kg7 80.Qg6 Kh8 81.Qg8) 76…Kd6 (76...Kd6 77.Bb4 Ke6 78.c8Q Kf6 79.Qg4 Kf7 80.Nd7 Ke8 81.Qe6 Kd8 82.Qe7; 76...Ke6 77.c8Q Kf6 78.Nd5 Kf7 79.Qd7 Kg6 80.Nf4 Kf6 81.Ba5 Kg5 82.Qg7 Kf5 83.Qg6) 0-1. Minister007 (2325) - Vladimir503 (2305), Rated blitz game, lichess.org, 2021.

4.b5 d5 5.Bb2 Nbd7 6.cd5 Nd5 7.e4 N5f6 8.Qc2 Bc5 9.h3 0-0 10.Nf3 Qe7 11.Bc4 h6 12.Nh4 Nb6 13.Ba2 Nh5 (13...Qd6 14.0-0=+) 14.g3 (14.d4!? Bd4 15.Bd4 Qh4 16.Be5=) 14...Kh8 15.d3 Bd7 (15...Bd6 16.Nf3=+) 16.Nc3 (16.Bf7 Qf7 17.Qc5 Bb5 18.Qb5 Qf2 19.Kd1 Qg3 20.Be5 Qh4-/+) 16...Rad8 17.a4 (17.Nd5 Nd5 18.Bd5 Qd6= (18...Bb5? 19.Nf5 Bd3 20.Qd3+–)) 17...Bb4 18.Kf1 c6 19.bc6 bc6 20.Nd1 Bc8 21.Ne3 Ba6 22.Rd1 Nf6 23.Kg2= Rfe8 24.Nhf5 Qd7 25.f3?? c5 26.Ng4 Ng4-/+ 27.hg4 Kg8 28.g5 hg5 29.Rh5 g6 30.Qc1 (30.Qc1 Qd3 31.Rd3 Rd3 32.Qg5 Rd2 33.Kh3 Bf1 34.Kg4 Bh3 35.Rh3 c4 36.Qf6 gf5 37.Kf5 Rb2 38.Rh8) 1–0. Laco,Giuseppe – Rosino,Antonio (2290), ITA–ch, 1979.

4.b5 d5 5.e3 Bd6 6.Bb2 0-0 7.Nf3 e4 8.Nd4 Nbd7 9.Nf5 (9.cd5!? Nd5 10.d3 ed3 11.Bd3=) 9...Be5-/+ 10.Nc3 (10.Bc3 dc4 11.Qc1 Bc3 12.Nc3 Nc5-+) 10...Nc5 11.Nd4 dc4 12.Bc4 1–0. Gradisar,Metod – Zupec,Jan, corr SLO–DP–PF20 ICCF, 2005.

4.b5 d6 5.Bb2 b6 6.e3 Bb7 7.Nf3 Nbd7 8.g3 (8.Be2 Be7=) 8...Nc5 9.Nc3 e4 10.Nd4 g6 11.Be2 Bg7 12.0-0 h5 13.h3 (13.f3 h4 14.g4 d5+=) 13...Nfd7 (13...Qd7 14.Kg2=+) 14.Nd5 Bd5 15.cd5 Ne5 16.Nc6 Nc6 17.Bg7 Rg8 18.dc6 Rg7 19.d4 ed3 20.Bd3 Qf6 21.Bc4 0-0-0 22.Qd4 Qd4 23.ed4 Ne6 24.Be6 fe6 25.Rae1 Re8 26.Re4 Kd8 27.Rfe1 Rge7 28.f4 Kc8 29.Kg2 Kd8 30.a4 Kc8 31.d5 e5 32.fe5 de5 33.g4 hg4 34.Rg4 Rg7 (34...Rd8 35.Rg6 Rd5 36.Re4+/-) 35.Kf3 (35.Ree4 g5+-) 35...Kd8 36.Reg1 Rh8 (36...Rh7 37.R1g3 Rh5 38.Ke4+/-) 37.h4 (37.Ke4!? Rh3 38.Rg6 Rg6 39.Rg6 Ke7+-) 37...Rh5 38.Ke4 Ke7 (38...Rf7!?+=) 39.Rg6+/- Rh4 40.Ke5 Rh5 41.Ke4 Rh4 42.Kf5 Rg6 43.Rg6 (43.Kg6?! Ra4 44.Kf5 Kd6=) 43...Ra4 (43...Rh5 44.Rg5 Rh7 45.Ke5+-) 44.d6! cd6 45.Rg7 Kf8 (better 45...Kd8 46.Rb7 Rb4 47.Rb6 Kc8+-) 46.Rb7 Rc4 47.Ke6 d5 48.Rb8 (48.Kd5 Rc1+-) 48...Kg7 49.Rb6 d4 50.Kd5 Rc1 51.Kd4 a4 (51...Kf7 52.Ra6+-) 52.Ra6 Kf6 (52...Kf7 53.Ra4 Ke6 54.Rc4 Rd1 55.Ke3+-) 53.Ra4 (better 53.c7 Kg5 54.Rc6 Rd1 55.Kc3 Rc1 56.Kb2 Rf1+-) 53...Ke6 54.Rc4 Rd1 55.Kc5 1-0. Minister007 (2330) - ElReyDelRey (2325), Rated blitz game, lichess.org, 2020.

4.b5 g6 5.Bb2 d6 6.g3 Bg7 7.Bg2 0-0 8.Nc3 Nbd7 9.Qc2 Nc5 10.d3 Bf5 11.e4 Be6 12.Nge2 c6 13.a4 Qd7 14.h4 Rac8 15.Ba3 Ng4 (15...Rfe8 16.0-0=+) 16.Bc5 (16.h5 g5=) 16...dc5=+ 17.Nd1 (17.h5 g5=+) 17...f5 (17...Rcd8 18.Ra3=+) 18.f3 (18.h5!?=) 18...Nf6-/+ 19.Nf2 Bh6 (19...f4!?-/+) 20.h5 Be3 21.hg6 hg6 22.Nd1 fe4 23.de4 Bd4 24.Rc1 Rcd8 25.Nf2 Kg7 26.Nd3= cb5 27.ab5 b6 28.Rd1 Qc7 29.Kd2 Qf7 30.Rc1 Rd6 31.Ke1 Qc7 32.Qd2 Kg8?? 33.Qg5+/– Qg7 34.Nd4 Rd4 35.Ne5 Re8 36.Bf1?? Bf5-/+ 37.Nc6? Ne4-+ 38.fe4 Be4?? 39.Nd4+– Qd4 40.Rh2 Bg2 41.Be2 Qg1 42.Kd2 Qd4? 43.Ke1 Qg1 44.Kd2 Qd4 ½–½. Laco,Giuseppe (2125) – Gutkin,B (2255), World Seniors, 2009.

5.Bb2 d6 (6.e3 0-0=+). sugamuxi – tired rook, ChessWorld.net, 2004.

5.e3 d5 6.d4 ed4 7.ed4 Be7 8.Nf3 0-0 9.c5 b6 10.c6 Re8 11.Be2 Ne4 12.0-0 Bd6 13.Re1 Bg4 14.Ng5 Be2 15.Re2 (worse is 15.Qe2 Nc6 16.Nf3 Na7-/+) 15...h6 16.Ne4 de4 17.Nc3 Qh4 18.g3 Qh5 19.Qb3 a4 20.Qc4 Qg4 21.Bb2 Qe6 22.d5 Qg6 23.Ne4 Rd8 (23...Be7+–) 24.Nd6 Qd6 25.Qg4 Qf8 26.Rae1 Nc6 27.dc6 f6 28.Re7 Rac8 29.R1e6 Re8 30.Bf6 Re7 31.Re7 Qf6 32.Qc8 Kh7 33.Qc7 Qa1 34.Kg2 h5 35.Qe5 (35.Qe5 Qe5 36.Re5 Kg6 37.c7 Kf6 38.f4 Kg6 39.c8Q Kh6 40.Qh8 Kg6 41.Qh5 Kf6 42.Qf5) 1–0. Schroeter,Rolf – Hilchenbach,Hubertus, DESC, 2005.

5.e3 d6 6.d4= Ba7 7.Nc3 0-0 8.Nf3 e4 9.Nd2 Bf5 10.h3 Re8 11.g4 Bg6 12.Bb2 Nbd7 (12...h6 13.h4 c5 14.dc5 Bc5 15.g5 hg5 16.hg5+=) 13.a4 (13.g5!? Nh5 14.h4+/-) 13...Nf8 (13...c5 14.d5 h6 15.Rg1=) 14.d5 (14.h4!? h6 15.Bg2+=) 14...N8d7= 15.Nb3 Ne5 16.Nd4 (better 16.Na5 Qc8 17.Nb3=) 16...Bd4 17.ed4 Nf3 18.Ke2 h5 (18...Nd7!? 19.Nb1 Qf6-+) 19.Bg2-/+ hg4 20.hg4 Ng4 21.Bf3 ef3 22.Kf3 Qg5 (22...Qf6 23.Kg4 Qf2 24.Qf3 f5 25.Kf4 Qd4 26.Kg3-+) 23.Bc1? (better 23.Qg1 Qf5 24.Kg3 Qd3 25.f3-+) 23...Qf5 24.Bf4 Nf2! 25.Kf2 (25.Qd2 Nh3 26.Rh3 Qh3 27.Bg3 Be4 28.Ne4 Re4 29.Kf2-+) 25...Qf4 26.Qf3 Qd2 (26...Qd4 27.Kg2 Re3 28.Ne2-+) 27.Kg1?? (27.Ne2-+) 27...Qd4 28.Kh2 (28.Qf2 Qc3 29.Rd1 Re5-+) 28...Re3 29.Qf2 (29.Raf1 Rf3 30.Rf3 Re8-+) 29...Qe5 (29...Rh3 30.Kg1 Rg3 31.Kf1 Bd3 32.Ke1 Re8 33.Qe2 Qc3 34.Kf2 Re2 35.Kg3 Bb1 36.Kf4 Re4 37.Kg5 Qe5) 30.Kg1 Rc3 (30...Rg3 31.Qg2 Qc3 32.Rf1 Rg2 33.Kg2 Be4 34.Kh2 g5 35.Rfg1 Qd2 36.Kh3 Kg7 37.Rg5 Qg5 38.c5 Rh8) 31.Re1 Rg3 32.Kf1 Bd3 33.Re2 Re8 (33...Re8 34.Qh2 Be2 35.Kf2 Qe3 36.Ke1 Bf3 37.Qe2 Qe2; 33...Qa1 34.Qe1 Qf6 35.Qf2 Be2 36.Ke2 Re8 37.Kd1 Qa1 38.Kc2 Rc3 39.Kd2 Qb2 40.Kd1 Rc1) 0-1. Minister007 (2365) - fireemblem6 (2525), Rated blitz game, lichess.org, 2020.

5.e3 Qe7 6.Bb2 0-0 7.Nf3 d6 8.Be2 Nbd7 9.0-0 c6 10.d4 Bb6 11.Nc3 e4 12.Nd2 Re8 13.Qc2 Nf8 14.Na4 Bc7 15.b6 Bb8 16.Nb3 h5 (16...d5 17.c5=) 17.c5 N8h7 18.Bc3 d5 19.Na5 Ng4 20.g3 (better is 20.h3!?+/–) 20...Nh2 21.Rfb1 (21.Nc6 bc6 22.Kh2 Qh4 23.Kg1 Bg3 24.fg3 Qg3 25.Kh1-+) 21...Nf3-/+ 22.Kg2 h4 23.Bf3 ef3 24.Kf3 hg3 25.Rh1 Qf6 26.Kg2 Bf5 27.Qe2 gf2 28.Rh5 Qg6 29.Kf2 Bg4 (29...Bg4 30.Rg1 Qf6 31.Ke1 Be2 32.Ke2 Qe6-+) 0–1. Bender,Wolfgang (1780) – Hogenacker,Jacques (2285), Saarlouis op 7th, 2004.

5.e3 Qe7 6.Nc3 d6 7.d3 0-0 8.Nf3 Bg4 (8...Bf5 9.Be2=) 9.Be2 Nbd7 10.0-0 c6 (10...h6 11.h3 Bf5 12.Bb2=) 11.Bb2 Rfc8 12.h3 Bh5 13.g4 Bg6 14.Nh4 Nf8 15.Bf3 (15.d4 Bb6+=) 15...N6d7 (15...Ne6 16.Re1=) 16.Ng6+= Ng6 17.Bh1 Qh4 (17...Rab8 18.Rb1+=) 18.Bg2 Qf6 (18...Nf6 19.Rb1+=) 19.Ne4 Qe7 20.d4 Ba7 21.de5 de5 22.Nd6 Rc7 23.Bc3 Bb6 24.Nb7! cb5 (24...Rb7 25.bc6 Double attack (25.bc6 Decoy; 25.bc6 Passed pawn)) 25.Qd6 Qd6 (25...Kf8 26.Rfd1 bc4 27.Rab1+-) 26.Nd6 Rd8 27.Rab1 Nf6 28.Nb7 Rd3? (28...Rb8 29.Rb5 Rc4 30.Bb2+- (30.Rb6?! Rc3 31.Ra1 a4+=; worse 30.Ba5 Ba5 31.Na5 Rb5 32.Nc4 h6+-)) 29.c5+- Ba7? (better 29...Nd7 30.cb6 Rcc3+-) 30.Ba5 Rb7 (30...Rc8 31.c6 Ra3 32.Nd6 Rc6 33.Bc6 Ra5 34.Bb5+-) 31.Bb7 Bc5 32.Rb5 Ba3 (32...Bf8 33.Bb4+-) 33.g5 Nd7 34.Be4 Rd6 35.Ra1 Bc5 36.Bf5 Ngf8 (36...h6 37.Bd7 Rd7 38.Rc5 hg5 39.Rc7 Rc7 40.Bc7+-) 37.Bd7 (37.Bd7 Nd7 38.Bb4 Bb4 39.Ra8 Nf8 40.Rb4+-) 1-0. Panza (2440) - agateford (2405), ChessWorld.net, 2004. (=1.c4 Nf6 2.b4 e5 3.a3 a5 4.b5 Bc5)

5.Nf3 0-0 (6.d4 ed4 7.Nd4 Ne4=+). DynamicPossibilities – tired rook, ChessWorld.net, 2004.

6.Bb2 Re8 7.Qc2 d6 8.Nc3 Be6 9.Nf3 Nbd7 10.Be2 h6 11.h3 c6 12.d4 ed4 13.ed4 Ba7 14.0-0 Nf8 15.bc6 bc6 16.Bd3 Qd7 17.Ne2 Ng6 18.Nh2 Re7 19.Rad1 Nh5 20.Bg6 fg6 21.g4 Nf6 22.Nf4 g5 23.Ng6 Rf7 24.f3 Rb8 25.Ba1 Qc7 26.Rfe1 Bc8 27.Kg2 d5 28.c5 Rb5 29.Re3 Bb8 30.Nf1 Ba6 31.Rde1 Rb7 32.Re8 Ne8 33.Re8 Kh7 34.Rh8 1–0. Laco,Giuseppe – Jablon,S, Bratto, 2000.

6.Bb2 Re8 7.Nf3 e4 8.d4 Bf8 9.Nfd2 d5 10.Nc3 c5 11.bc6 bc6 12.c5 Ng4 13.Be2 Qh4 14.g3 Qh3 15.Bf1 Qh6 16.Be2 f5 (16...Nh2? 17.Nf1+–) 17.Na4 Nd7 (17...Nh2? 18.Nf1+–) 18.Bc3 Be7 (18...Nh2? 19.Nf1+–) 19.Nb3 Attacking the isolated pawn on a5 19...Bd8 (worse is 19...Nh2 20.Bh5 g6 21.Rh2+/–) 20.Qd2 Nh2 21.0-0-0 Nf6 22.Kc2 Nfg4 23.Bg4 fg4 24.Nb6 a4 25.Na8 ab3 26.Kb2 Ba6 27.Nb6 Bb6 (better is 27...Bc7!?+=) 28.cb6+– Rb8 29.Bb4 (better is 29.f4!? Nf3 30.Rh6 Nd2 31.Rc6 Nc4 32.Kb3 Nb6 33.Re1+/–) 29...Rb6+/– 30.Bc5 Rb8 31.Qa5 (better is 31.f4!? ef3 32.Rh2+/–) 31...Be2= 32.Qc7 Re8 33.Qd7 Ra8 34.Rd2 Bf3 35.Qb7 Re8 (35...Bh1?? 36.Qa8 Kf7 37.Qf8 Kg6 38.Qe8 Kf5 39.Qf7 Qf6 40.Qh5 Ke6 41.Qh2+–) 36.Qd7 Ra8 37.Rc1 ½–½. Cruz Condori,Alfredo (2145) – Suba,Mihai (2525), Collado Villalba op, 2007. (=1.c4 Nf6 2.b4 e5 3.a3 a5 4.b5 Bc5 5.e3 0-0)

6.Nc3 Re8 7.Qb3 d6 8.Bb2 c6 9.Rc1 Be6 10.Na4 Nbd7 11.Nf3 Rc8 12.d4 ed4 13.Nd4 Bd4 14.Bd4 d5 15.c5 Ne4 16.Bd3 Qg5 17.g3 Qh5 18.Be2 Bg4 19.Bg4 Qg4 20.b6 Ng5 21.Qd1 Qe4 22.Kd2-/+ Ne5 23.Nb2 Nef3 24.Kc3 Nd4 25.Qd4 Qg2-+ 26.f4?? Ne6 27.Qd2 Qf3 28.Nd3? d4?? 29.ed4=+ Nd4 30.Rhf1? Qd5-+ 31.Kb2 Re2 (31...Re2 32.Rfd1 Qb3 33.Ka1 Rd2 34.Rd2 Re8-+) 0–1. Stojanovski,Valentin – Trkaljanov,V (2245), XVIII TCh–MKD, Struga MKD, 2009.

6.Nc3 Re8 7.Be2 c6 8.d4 ed4 9.ed4 Be7 10.Nf3 d6 11.0-0 Be6 12.bc6 bc6 13.Qc2 Nbd7 14.Ng5 h6 15.Ne6 fe6 16.Re1 c5 17.d5 ed5 18.cd5 Bf8 19.Bd2 Rb8 20.Bb5 Re1 21.Re1 Ne5 22.f4 Ned7 23.Qd3 Kh8 24.Bc1 Qb6 25.Kh1 Qc7 26.Bc6 Nb6 27.Re6 Qf7 28.Kg1 Rc8 29.f5 Nfd7 30.Bf4 c4 31.Qh3 Nc5 32.Re3 (worse is 32.Bd6 Ne6 33.de6 Qf6 34.Bf8 Qf8-/+ (worse is 34...Rf8 35.Qe3 Nc8 36.g4+=)) 32...Nd3 33.Bg3 Nd7 34.f6 Qf6? 35.Qd7+– Rb8 36.Qa7 Qc3? 37.Qb8 Qc1 38.Re1 (38.Re1 Ne1 39.Qf8 Kh7 40.Qf1+– (40.Bd6 Nd3 41.Qf1 Qe3 42.Kh1 Nf2 43.Kg1 Ne4 44.Kh1 Nd6-/+)) 1–0. Belter,Edmund – Digalakis,George, 60. LSS No Engine Cup Preliminary, 2012. (=1.c4 Nf6 2.b4 e5 3.a3 a5 4.b5 Bc5)

6.Nf3 e4 7.d4 Bb6 8.Ng5 h6 9.Nh3= d6 10.Nf4 Bf5 11.Nc3 Nbd7 12.Be2 g5 13.Nfd5+= c6 14.Nb6 Nb6 15.0-0 Be6 16.Qb3 a4 17.Qa2 d5 18.c5+/– Nbd7 19.f3 ef3 20.gf3 Nc5+= 21.dc5 d4 22.Qb2 dc3 23.Qc3 Bh3? 24.Bb2+– Bf1 25.Kf1 Kg7? 26.Rd1 Qe7 27.Rd7!! Qe6 28.Rd6 Qf5 29.Rf6 Qb1 30.Kf2 Qa2 31.Rg6! Kg6 32.Qg7 Kh5 33.f4 Kh4 34.Qh6# 1–0. comp – comp, 2006.

6.Nf3 Re8 7.Ne5 Re5 8.d4 Bd4 9.Qd4=.

4.Bb2 cb4 5.Be5 Nc6 6.Bb2 ba3 (6...Be7 7.Nf3=+) 7.Na3 Be7 8.Nf3 0-0 9.e3 d5 10.Be2 Bf5 (10...Be6 11.0-0=) 11.0-0 Rc8 12.Nb5 a6 (12...dc4 13.Bc4 Bg6 14.Rc1=) 13.Nbd4+= Nd4 14.Nd4 Bg6 15.f4 h6 (15...dc4? 16.f5+-) 16.f5 Bh7 17.Qb3 (17.cd5!? Qd7 18.Bf3 Nd5 19.Qb3+=) 17...dc4= 18.Bc4 (worse 18.Qb7 Rb8 19.Qa7 Rb2-/+) 18...Ne4 19.Rad1 Nc5 20.Qa2 b5 21.Bd5 Qb6 (21...Qd7 22.e4 Na4 23.Ba1=) 22.Rc1 Rc7 23.Bc3 (23.Ba1 a5=) 23...b4= 24.Ba1 Bf6 25.Nb3 Ba1 26.Nc5 Rc5 27.Ra1 Rb5 28.Be4 (28.Qb3 Rc5=) 28...a5=+ 29.d4 b3 30.Qb2 Qa7 31.Bc6 Rb4 32.Ra3? (better 32.f6!?=+) 32...Rc8-+ 33.Qd2 Qc7 (33...Rc6?! 34.Qb4 ab4 35.Ra7 Bf5 36.Rb7= (36.Rf5?? b2 37.Rf1 Rc1-+)) 34.Be4 b2 35.Bb1 Qc1 36.Qd3 a4 37.d5 Qc4 38.Qc4 (38.Qd1-+) 38...Rcc4 (38...Rbc4?! 39.d6 Kf8 40.d7-+) 39.d6 (39.Kf2 Rc1 40.Re1 Kf8-+) 39...Kf8 40.d7 Ke7 41.f6 Kd7 (41...gf6?! 42.Bh7 Rc1 43.Bf5=+) 42.fg7 Bg8 43.Rd3 Ke7 44.Rd5 f6 45.Ra5 Rc1 46.Ra7 (46.Kf2 Rbc4 47.Bg6 Rg4-+) 46...Kd6 47.Kf2 (47.Ra6 Kc7 48.Raf6 a3-+) 47...Rbc4 48.Ra8 Rc8 49.Ra4 (49.Rc8 Rc8 50.Kg3-+) 49...Rf1 50.Kf1 Rc1 51.Kf2 Rb1 52.Rb4 Ke6 53.e4 (53.Rb7 f5-+) 53...Kf7 54.Rb7 Kg6 55.Kg3 Bf7 56.g8R Bg8 57.Kh4 (57.Rb4 Be6-+) 57...Bc4 58.Rb6 Kg7 59.Rb7 Bf7 60.Kg4 (60.Kg3 Kf8-+) 60...Kf8 61.Rb6 (61.Kg3 Bg6-+) 61...Ke7 62.Rb7 (62.Kg3 Bg6-+) 62...Ke6 63.g3 (63.Rb5 Bg6-+) 63...Bg6 64.Rb6 Ke5 65.Rb4 Kd6 0-1. Panza (2480) - stormytlc (2565), ChessWorld.net, 2009. (=1.c4 Nf6 2.b4 e5 3.a3 c5)

4.b5 a6 5.Bb2 ab5 6.cb5 Bd6 7.Nf3 0-0 (7...e4 8.Ne5=) 8.Ne5= Qe8 (8...Re8 9.f4+=) 9.d4 (9.Nc4 Be7+=) 9...cd4 (9...Bc7!?+=) 10.Qd4+/- Be5 (10...Qe6 11.e3+/-) 11.Qe5+- d6 12.Qe8 Re8 13.Bf6 gf6 14.e3 Be6 15.Nc3 Nd7 16.a4 Rac8 17.Ne4 Rc7 18.Nd6 Rd8 19.Rd1 Bb3 20.Rd4 Nb6? 21.a5 Rcd7 22.ab6 Rd6 23.Rd6 Rd6 24.Be2 Rb6 25.Kd2 Kf8 26.Ra1 Ke7 27.Ra7 Kd6 28.f4 Kc5 29.g4 Bc4+/- 30.Bc4 Kc4 31.Ra4 Kb5 32.Re4 Rd6 33.Kc3 Kc5 34.Re7 b5 35.Rf7 b4 36.Kc2 Rb6 37.Rc7 Kb5 38.Kb3 Ra6? 39.Rh7 Ra3+/- 40.Kb2 Re3 41.Rh5 Kc4+= 42.Rf5 b3 43.Rf6 Re2 44.Kb1 b2?? 45.Rc6?? Kb3= 46.Rb6 Kc3?? 47.Rc6?? Kb3= 48.Rb6 Kc3 49.Ka2 Re4 50.Rb2 Rf4 51.Rg2 (51...Ra4 52.Kb1 Rb4 53.Kc1+-) 1-0. Chairboy - MikeLWhit, ChessWorld.net, 2005.

4.bc5 Bc5 5.e3 0-0 6.Nc3 d6 7.Na4 (7.d4 ed4 8.ed4 Re8 9.Be2 Bb6+=) 7...Nc6 8.Nc5 dc5 9.Bb2 Re8 10.h3 b6 11.d3 Bb7 12.Nf3 h6 13.Be2 Qc7 14.0-0 Rac8 15.Qc2 Qd6 16.Rad1 Qe6 17.Rfe1 a6 18.d4 ed4 19.ed4 cd4 20.Nd4 Nd4 21.Bd4 Be4 (better is 21...Qc6!? 22.Bf1 Nd7=) 22.Qb2+/- Qc6 (22...Rc6 23.Bf1 Qf5 24.f3+/-) 23.f3 Bg6 24.Bf1 (better is 24.Qb6!? Qa4 25.Bf6 gf6 26.Qb4+-) 24...Rb8+= 25.Re8 Ne8 26.c5 b5 27.Kh2 f6 28.Bc4+= Bf7 29.Bd3 Nc7= 30.Qf2 Rd8 31.Be4 Bd5 32.Bb1 Ne6 33.Be3 Qc7 34.Kg1 Bb3 35.Rd8 Qd8 36.Be4 Bd5 37.Bb1 Bb3 38.Bf5 Qd1 39.Kh2+= Qd5 40.Be4 Qd7 41.c6 Qd6 42.Qg3+/- Qc7? 43.Bf5?? Kf7?? 44.Be6+- (44.Be6 Be6 45.Qc7 Kg6 46.Qe7+-) 1-0. Campos Calvo (2085) - Solsona Manonelles (1830), Calvia Seniors op, 2006.

4.Bb2 Qc7 5.Nf3 e4 6.Nd4 d5 7.e3 a6 8.Be2 Bd6 9.h3 h5 10.Nc3 Be5 11.Qb3 Bd4 12.ed4 Be6 13.Nd1 b5 14.cb5 ab5 15.Rc1 Qd7 16.Qg3 g6 17.Qe5 Qe7 18.0-0 Rg8 19.d3 Kd8 20.de4 Ne4 21.Qf4 g5 22.Qe3 h4 23.Bf3 f5 24.Be4 de4 25.Nc3 Bc4 26.Rfe1 Re8 27.Qd2 Ra7 28.Re3 Rd7 29.f3 Rd6 30.fe4 fe4 31.Ne4 Re6 32.Rce1 Bd5 33.Nd6 Qd6 34.Re6 Re6 35.Qg5 Qe7 36.Qg8 Kc7 37.Re5 Nd7 38.Re6 Qe6 39.Qe6 Be6 40.Bc1 Nf8 41.Bg5 Ng6 42.Kf2 Kd6 43.g3 Bh3 44.gh4 Bg4 45.Kg3 Bh5 46.Kf2 Kd5 47.Ke3 Kc4 48.Ke4 Kb3 49.d5 cd5 50.Kd5 Ka3 51.Kc5 Ka4 52.Bf6 Nf4 53.Be7 Nd3 54.Kd4 Nb4 55.Ke4 Bg6 56.Ke5 Nc6 0–1. Vandenburg,V – DuVall,D, Plymouth MI, 1984.

4.Bb2 d6 5.Nc3 Be7 6.e4 Be6 7.d4 ed4 8.Qd4 c5 9.bc5 Nc6 10.Qe3 dc5 11.Nge2 (better 11.Nd5!?=) 11...Bc4 12.Rd1 Qc7 (better 12...Qb6 13.Qc1 Bb3-/+) 13.Nd5+= Bd5 14.ed5 Nd5 (better 14...Nd4!? 15.Nd4 cd4 16.Qd4 Bd6 17.Qa4 Kd8+=) 15.Rd5+/- 0-0 16.Bg7?? (better 16.Qg3 Qg3 17.Ng3+/-) 16...Kg7= 17.Rg5 (17.Rc5 Rad8 18.Qc3 f6=+) 17...Bg5 (better 17...Kh8!? 18.Qc3 f6-/+) 18.Qg5= Kh8 19.Qf6 Kg8 20.Qg5 ½-½. Eti,Lui - Ward,C, NZL NZCCA Handicap, 1995.

4.Bb2 dc4 5.e3=+.

4.Bb2 d4 5.e3 c5 6.bc5 Bc5 7.Nf3 Nc6 8.ed4 ed4 9.h3? (9.Qe2 Be6-/+) 9...0-0 (better 9...d3 10.Qa4 Qe7 11.Kd1 Ne4-+ (11...Bf2?! 12.Bd3 0-0 13.Rf1=+)) 10.d3-/+ Re8 11.Be2 Bf5 12.0-0 h6 13.Nbd2 Qd7 14.Nb3 b6 15.Re1 Rad8 16.Bf1 Bg6 17.Qd2 Bh5 18.Nh2 Nh7 19.g4 Bg6 20.f4 Nf8 21.f5 Bh7 22.Bg2 Ne5 23.Re4 g6 24.fg6 (24.Rae1 f6 25.R4e2+/- (worse 25.Qh6 Nd3 26.Nc5 bc5 27.Re8 Re8 28.Bd5 Kh8=)) 24...Bg6=+ 25.Rf1? (25.Qh6!? Qa4 26.Nc5 bc5 27.Qd2-/+) 25...Qd6 (better 25...Be4 26.Be4 Nc4 27.dc4 Re4 28.Nc5 bc5 29.Qh6 Qc7-+) 26.Nd4?? (better 26.Nc5 bc5 27.Re2-/+) 26...Be4-+ 27.Be4 Bd4 28.Bd4 Qd4 29.Kg2 (29.Rf2 Nd3 30.Bd3 Qd3-+) 29...Neg6 (better 29...Qe4! 30.de4 Rd2 31.Rf2 Rf2 32.Kf2 Nc4-+) 30.Qh6 Re4 31.de4 Qe4 32.Nf3 (32.Rf3-+) 32...Rd3 33.Kg3 Ne6 34.h4 Nd4 35.h5 Rf3 36.Rf3 (36.Kh2 Qe2 37.Rf2 Qf2 38.Kh1 Rh3) 36...Qf3 37.Kh2 Qf2 38.Kh1 (38.Kh3 Ne2 39.Qh7 Kh7 40.hg6 Kg6 41.c5 Nf4) 38...Nf3 39.hg6 (39.Qh7 Kh7 40.hg6 Kg6 41.c5 Qf1) 39…Qg1 (39...Qf1) 0-1. Minister007 (2310) - daorange (2405), Rated blitz game, lichess.org, 2019.

4.cd5 a5 5.b5 Bc5 6.Nf3 0-0 7.e3 (7.Ne5? Bd4 (7...Qd5?! 8.Nf3=; < 7...Nd5 8.e3+=) 8.Nc3 Be5-+) 7...Qd5 (7...Re8!?=+) 8.Nc3= Qe6 9.Ne5 Qe5 10.d4 Bd4 11.Qd4 Qe7 12.Qf4 c6 13.Bb2 Nh5 14.Qe4 Be6 15.Rd1 Nf6 16.Qh4 Bb3 17.Rd4 Qe6 18.Bd3 Qe5 (18...c5 19.Ne4 Ne4 20.Be4 f5 21.Bb7 Ra7-/+ (21...cd4 22.Qd4 Qe7 23.Bd5 Bd5 24.Qd5 Qf7 25.Qa8+-)) 19.Rg4 Qh5 20.Qh5 Nh5 21.Ke2 Nd7 22.Rh4 g6 23.Ne4 c5 24.Rc1 Rac8 25.Nd6 Rc7 26.Bc4 Bc4+/- 27.Rhc4 b6 28.Rd4 f6 29.Rd2 f5 30.Rcd1 f4 31.e4 Ndf6 32.Kf3 Re7 33.e5 Ne8 34.Nc8 Re6 35.Rd7 g5 36.Rb7 Rf7 37.Rb8 Nhg7 38.Nb6 g4 39.Ke4 f3 40.g3 Ree7 41.Rdd8 h6 42.Nd5 Re6 43.b6 Kh7 44.Kd3 a4 45.Kc4 (45...Kg6 46.Nf4 Rf4 47.gf4+-) 1-0. marekt - weBNimzo, ChessWorld.net, 2004.

5.Bb2 Bd6 6.Qc2 0-0 7.Nf3 Qe7 8.e3 c6 9.h4 f5 10.Bc4 Kh8 11.Nc3 Be6=+ 12.Ne2 Nd7 13.h5 Kg8 14.g3 a5-/+ 15.b5 cb5 16.Bb5 Rac8 17.Qb1 f4 18.gf4=+ Bg4 19.Ng5+/– N7f6 20.fe5 Be5+= 21.d4 Bd6= 22.h6 g6 23.Rg1 Bf4? 24.Rg4 Ng4+/– 25.ef4 Rf4 26.Qa2 Rf5 27.Bc4?? Qg5-+ 28.Bd5 Rd5 29.Nc3? Re8 30.Kd1 Nf2 31.Kc2 Qf5 32.Kb3 Kh8 33.a4 Re3 34.Qa3 Rd4 35.Ka2 Qf7 36.Kb1 Ra4 0–1. Laco,Giuseppe (2180) – Skok,J (2075), Open, Bled SLO, 2001.

5.Bb2 Bd6 6.d4 e4 7.e3 (7.Nc3 Nc3 8.Bc3 0-0=+) 7...0-0 8.g3 (8.Nc3 Nc3 9.Bc3 Nd7=+) 8...c6 (8...Nd7 9.Nc3 N7f6 10.Nd5 Nd5 11.Qc2-/+) 9.Bg2 (9.Nc3 Nc3 10.Bc3 Be6=+) 9...a5 (9...f5 10.Nc3-/+) 10.Nd2 (10.Be4 ab4 11.Qc2 ba3 12.Ba3 Nb4-/+) 10...Bf5 (better is 10...ab4!? 11.ab4 Ra1 12.Ba1 f5-+) 11.Ne4=+ ab4 (11...Be4 12.Be4 ab4 13.a4=+) 12.Nd6 Qd6 13.Ne2? (better is 13.Qc1=+) 13...ba3-+ 14.e4?? (14.Bc1 Re8 15.0-0-+) 14...Qb4 15.Bc3 Nc3 16.Qc2?? Ne2 17.Ke2 Re8 18.Kf1 Bg6 19.Bf3 Qd4 20.Kg2 Nd7 21.Rhd1 Qf6 22.Ra2 Ne5 23.Be2 Ra5 24.Re1 h6 25.f3 h5 26.Qc3 b6 27.Ra3 Ra3 28.Qa3 h4 29.g4 Ng4! 0–1. alaamattar (2105) – abhailey (2100), net–chess.com, 2005.

5.Bb2 Bd6 6.e4 Nf4 7.Nf3 0-0 8.d4 (8.Be5? Be5 9.Ne5 Qd4-+) 8...ed4 9.Qd4 f6 10.Bc4 Kh8 11.0-0 Qe8 12.Kh1 b5 13.Bb3 Qg6 14.Rg1 Re8 15.Nbd2 (15.Nc3 Bg4 16.Ne1 Qh5 17.Nb5 Be5-/+) 15...a5 16.Qe3 ab4 17.ab4 Ra1 18.Ba1 Bb7 19.Nh4 Qg4 20.Bf7 Rd8 21.Nf5 Bb4 22.f3 Bd2 23.Qa7 Nd3 24.Rf1 Qg5 25.h4 Qf4 26.g3 Be4 27.gf4 Bf5 28.Qc7 Rf8 29.Qe7 Nd7+/– 30.Be6 Be6 31.Qe6 N3c5 32.Qe7 Bf4 33.Bd4 Rc8 34.Rg1 Bh6 35.Bc5 Nc5 36.Rd1 g6 37.Qf6 Kg8 38.h5 Bg7 39.Qb6 Kf7 40.hg6 hg6 41.Rd6 Bb2 42.Qa7 Kf8 43.Rg6 Nd3 44.Qh7 Rc1 45.Kh2 Be5 46.f4! Bf4 47.Kg2 Rc2 48.Kf1 Rf2 49.Kg1 Bh2 50.Kh1 Rf7 51.Qh2 Rf1 52.Kg2 Rf2= 53.Kg3 Rh2 54.Kh2 b4 55.Rb6 ½–½. Tauscher,David (2380) – Hohlstein,Walter (2080), RSX – A10 – Englisch–1, 2008.

5.Bb2 Bd6 6.e4 Nf6 7.Nc3 0-0 8.Nf3 a6 (8...Nc6 9.Be2=+) 9.Bc4 b5 10.Bd5 Nd5 11.Nd5 Nd7 (11...Be6 12.Ne3=+ (12.Ne5? Be5 13.Be5 Bd5 14.ed5 Re8-+)) 12.d4= ed4 (12...Re8 13.0-0=) 13.0-0 (13.Qd4 f6+=) 13...c5= 14.bc5 Bc5 15.Nd4 Bb7 (15...Qh4 16.Qd3 Bd6 17.Nf3=) 16.Nf5+= Nf6?? (better is 16...Re8 17.Qg4 g6+/–) 17.Bf6 Bd5 18.Bd8 (18.ed5?! Qf6 19.Qf3 Rfd8=; 18.Qd5?! Qd5 19.ed5 gf6+–) 18...Rad8 19.ed5 Rfe8 20.Qg4 g6 21.Nh6 Kg7 22.Qg5 f6 23.Nf5 Kf7 24.Qh6 gf5 25.Qh7 Kf8 26.Qf5 Kf7 27.Rae1 Re1 28.Re1 Ba3 29.Qh7 (29.Qh7 Kf8 30.Qh8 Kf7 31.Qd8+–) 1–0. supertimchan (2330) – coqui (2000), net–chess.com, 2004.

5.Bb2 Bd6 6.g3 0-0 7.Bg2 Nf6 8.Nf3 Re8 9.0-0 e4 10.Nd4 Be5 11.e3 a5 12.d3 ab4 13.ab4 Ra1 14.Ba1 Bg4 15.f3 Nd5 16.Qd2 ef3 17.Bf3 Bf3 18.Rf3 Qd7 19.Na3 Bd4 20.Bd4 Nc6 21.Bc3 Nc3 22.Qc3 Ne5 23.Rf2 Qd3-+ 24.Qd3 Nd3 25.Rc2 c6 26.b5 Ne5 27.bc6 bc6 28.Rc3 f6 29.Nc2 Rc8 30.Nd4 c5 31.Ne6 c4 32.Nf4 Rd8 33.h4 Rd2 34.Ne6 Kf7 35.Nd4 Rd3 36.Rd3 Nd3 37.Kf1 Kg6 38.Ke2 Kh5 39.Nf5 g6 40.Nd6 Ne5 41.Ne8 Kg4 42.Nf6 Kg3 43.Nh7 Kh4 44.Nf6 g5 45.Ne4 g4 46.Kf2 Kh3 47.Nc3 g3 48.Ke1 Nd3 49.Kf1 Kh2 (50.Ke2 g2-+) 0–1. Freyser – tired rook, ChessWorld.net, 2004.

4.Bb2 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.a3 Bf5).

4.Nc3 a5 5.b5=+.

4.Nc3 Be6 5.e3 Nbd7 6.Nf3 Be7 7.Qc2 0-0 8.Bd3 h6 9.0-0 Bg4 10.Ne1 (10.Be2 a5 11.Bb2 c5=) 10...Re8 11.Bb2 Nf8 12.h3 Bd7 13.Ne4 Qc8 (13...a5 14.Nf6 Bf6 15.Be4+=) 14.Ng3 (14.f4 a5+=) 14...Ng6 (better is 14...Ne6!?=) 15.Bg6+/– fg6 16.Qg6 Rf8 17.Nh5 Nh5 18.Qh5 Be8 19.Qe2 Qe6 20.Nd3 Qg6 21.f4 e4 22.Nf2 Bd7 23.d3 ed3 24.Qd3 Qf7 25.Rac1 Bf5 26.e4+/– Bd7 27.f5 Bg5 28.Rc2 a5 29.Ng4 ab4 30.ab4 Ra4 31.Qc3 Kh7 32.e5 h5+= 33.Ne3 de5 34.Qb3 Bf6 35.Nd5+= Be8 36.b5 Ra8+/– 37.Ba3 Rg8 38.Re2 c6 39.Nb6 Rd8= 40.bc6 Bc6 41.Bb2 Rge8 42.Qg3 e4 43.Bf6 Qf6 44.Kh2 Re5 45.Rf4 Rf5 46.Rf5 Qf5 47.Nd5? Bd5-+ 48.cd5 Rd5 49.Rb2 b5 50.Rf2 Qe5 51.Re2 Qg3 52.Kg3 Rd3 53.Kf4 e3 54.Re3 Re3 55.Ke3 Kg6 56.g3 Kf5 57.Kd4 g5 58.Kc5?? h4 59.Kb5 hg3 (60.Kc6 g2-+) 0–1. DanielMartin – Argento1960, ChessWorld.net, 2004.

4.Nc3 Be6 5.e4 Nbd7 6.Nf3 h6 7.d4 ed4 8.Nd4 Bg4 9.f3 Bh5 10.Bd3 Ne5 11.0-0 Be7 12.Be3 Qd7 13.Nf5 0-0 14.Ne2 Bg6 15.Ne7 Qe7 16.Nf4 Bh7 17.Qd2 Rfe8 18.Bf2 a6 19.Be2 Ng6 20.Rad1 Rad8 21.Bd4 Ne5 22.Qc3 Nfd7? 23.Nd5+– Qf8 24.Nc7 Re7 25.Nd5 Re6 26.a4 Rc8 27.Qb3 Nc6 28.Be3 Nce5 29.a5 Nf6 30.Nb6 Rc7 31.Rd2 Ned7 32.Rfd1 Nb6 33.Bb6 Rc8 34.c5 dc5 35.Bc5 Qe8 36.Bc4 Re5 37.Bd4 Re7 38.b5 Ra8 39.ba6 ba6 40.Qb6 Qc8 41.Bf6 (41...gf6 42.Rd8 Kg7 43.Rc8 Rc8 44.Qa6+–) 1–0. tired rook – Argento1960, ChessWorld.net, 2004.

4.Nc3 g6 5.e3 Bg7 6.Be2 0-0 (6...Nc6 7.b5 Ne7 8.e4=) 7.h4 (7.e4 a5 8.Qa4 Nbd7=+) 7...a5 8.b5 c6 9.Bb2 d5 10.cd5 cd5 11.Na4 d4 12.Bc4 Qd6 13.Qb3 Nbd7 (13...Bg4 14.Nf3=+) 14.Nf3= Ne4 (14...de3 15.de3 e4 16.Rd1=) 15.Qc2 Ndc5 16.Ng5 Ng5 17.Nc5 Ne6 18.Ne4 Qb6 19.a4 (19.h5 f5 20.hg6 fe4 21.gh7 Kh8 22.Qe4 Ng5=) 19...Bd7 (19...f5 20.Ng3=+) 20.Ba3 (20.h5 g5=) 20...Rfd8 (20...Rfc8 21.Rc1=) 21.h5+= Be8 (better is 21...g5!?+=) 22.hg6+/– hg6 23.Be7 Rdc8? (better is 23...de3 24.de3 Bd7+–) 24.Nf6+– Bf6 25.Bf6 Ng7 26.Qg6 (26...Qf6 27.Qf6 Rc4 28.Qe5+–) 1–0. Laco,Giuseppe (2205) – Capezza,Marco, 5th HIT Open, 2000.

4.d3 Be6 5.e4 Nbd7 6.Be2 a5 7.Bb2 Be7 8.Nf3 Nf8 (8...ab4 9.ab4 Ra1 10.Ba1=) 9.0-0= Ng6 10.Nbd2 0-0 11.Qc2 (11.d4!?+=) 11...Nf4=+ 12.Rfe1 Qc8 (12...ab4 13.ab4 Ra1 14.Ba1 Ne2 15.Re2=) 13.Bf1 (13.d4 ed4 14.Bd4 c5 15.bc5 dc5=) 13...c6 (13...ab4 14.ab4 Re8 15.d4+=) 14.Rac1 (14.d4 ed4 15.Bd4 ab4 16.ab4 Qc7+=) 14...b6 15.b5 c5 16.a4 h6 17.Nb1 Bg4 18.Nc3 Bf3 19.gf3 Nh7 (19...Qe6 20.Ne2 N6h5 21.Nf4 Nf4 22.Rcd1-/+) 20.Bg2 (20.Nd5 Nd5 21.cd5 Bg5=+) 20...Ng2 21.Kg2 Ng5 22.Qe2 Qh3 (23.Kg1 Nf3 24.Qf3 Qf3-+) 0–1. 2good2be1 – Argento1960, ChessWorld.net, 2004.

4.e3 g6 5.d4 ed4 6.ed4 Bg7 7.Nc3 0-0 8.Be2 Re8 9.Nf3 c5 10.h3 Nc6 11.b5? (better 11.0-0!?=+) 11...Nd4-+ 12.Nd4 cd4 13.Na2 (13.Nb1 d3! 14.Qd3 Bf5-+) 13...Qe7 (better 13...Ne4!? 14.Rb1 d3 15.Qd3-+) 14.Kf1 Ne4 15.Bd3 f5 (15...Bf5 16.Bf4 d5 17.Nb4 dc4 18.Bc4-+) 16.g3 (16.h4 Be6-+) 16...b6 17.Nb4 Nc3 18.Qc2 Bb7 19.Nc6 Qd7 20.Kg2 Bc6 21.bc6 Qc6 22.Kh2 Qf3 23.Bf4 (23.Rf1-+) 23…Re2! (23...Re2 24.Rhf1 Rc2 25.Bc2 Be5-+) 0-1. Minister007 (2395) - Sa_Nia (2400), Rated blitz game, lichess.org, 2020.

4.Bb2 d6 5.d4 e4 6.Nd2 c6 7.e3 d5 8.Ne2 0-0 9.Nc3 Nbd7 (9...Bf5 10.cd5 cd5 11.Be2=) 10.Be2 Re8 11.Qc2 Nf8 12.c5 (12.Rc1 Bg4=) 12...Ng6 (12...Bg4 13.f3 ef3 14.Nf3=) 13.h3 Bd7 14.a4 White prepares the advance b5 14...Rf8 15.b5 Ne8 (15...b6 16.0-0=) 16.0-0 f5 17.f4 (17.Qb3 Nf6+=) 17...ef3 (17...Nf6 18.Rfb1=) 18.Nf3 (worse 18.gf3 f4 19.e4 Bh3-/+; 18.Rf3?! Nh4 19.Rf2 Bg5=) 18...Nf6 19.Bd3 Ne4 20.Qb3 (20.Ne4? fe4 21.Be4 de4-+) 20...Kh8 21.Ne2 (21.a5 a6 22.b6 Bf6=) 21...Bg5 22.Bc1 Bh6 (22...b6 23.cb6 ab6 24.bc6 Bc6 25.Nf4 Nf4 26.ef4=) 23.a5 (23.Nf4 Qf6+=) 23...Nh4 (23...cb5!? 24.Nf4 Bf4 25.ef4 a6=) 24.a6 ba6 25.bc6 (25.ba6?! Nf3 26.Rf3 Rb8=) 25...Bc6 26.Ra6 (26.Ba6?! Rb8 27.Qa3 Nf3 28.gf3 Ng5=) 26...Qc7?? (better 26...Nf3 27.gf3 Qe8+=) 27.Nh4+- Rab8 (27...g6 28.Qa2+-) 28.Qa2 Rb7 (28...g6+-) 29.Nf5 Bg5 (29...Qd7 30.Be4 de4 31.Nd6 Rf1 32.Kf1+-) 30.Be4 de4 31.Qe6 (better 31.Nd6!? Rf1 32.Kf1 Qd7+-) 31...Bb5 32.Rd6 (better 32.Nd6 Bf6 33.Nb7 Qb7 34.Ra2+-) 32...Be2+/- 33.Re1 (33.Rf2 Bd3 34.Rc6+-) 33...Bh5? (33...Bd3 34.Bd2 Qb8 35.Rd7+/-) 34.c6 (34.Qe4 Qa5 35.Rf1 Qb5+-) 34...Rb1+/- 35.Rd7 (35.Qe5 Kg8 36.Rf6 Qe5 37.Rf8 Kf8 38.de5 Rb8+-) 35...Qa5 36.Rf1 Bg6 37.Qd6 Rg8 (37...Re8 38.Kh2 (38.Rg7 Rc1 39.Rc1 Qf5-/+; 38.Ng7 Rg8 39.Kh2 Qb5+-) 38...Qb5 39.Ng3+-) 38.Ne7 Rc1 (38...Be7 39.Qe7 Qc3+-) 39.Rc1 (39.Ng6 hg6 40.Rc1 Be3 41.Kh2 Bc1-+) 39...Be3 40.Kh2 Rf8 (40...Bc1 41.Ng8 Qg5+-) 41.Ng6 (41.Ng6 hg6 42.Qf8 Kh7 43.Qg7) 1-0. Hryzlova,Sofiia (2185) - Castaneda,N (2240), Titled Tuesday, 2021. (=1.c4 e5 2.b4 Nf6)

4.Nc3 0-0 5.Nf3 d6 6.d4 (6.e4 a5 7.b5 Nbd7=) 6...ed4 (6...e4 7.Nd2=) 7.Nd4 c5 (7...Re8 8.e4=) 8.bc5 (8.Nc2!?=) 8...dc5=+ 9.Ndb5 Qd1 (9...Nc6 10.Qd8 Rd8 11.Nc7=) 10.Nd1 Nc6 (10...Na6 11.Bf4=+) 11.g3 (11.Nc7 Nd4 12.Ra2 Rb8=) 11...a6 (11...Rd8 12.Bg2=+) 12.Nbc3 (12.Nc7 Nd4 13.Ne3 Ra7=+) 12...Nd4 13.Ne3 b5 14.Bg2 Rb8 15.Ncd5 Nd5 16.cd5 Nb3 17.Rb1 Nc1 18.Rc1 f5 19.Rd1 Bd6 20.Bf3 Bd7 21.Kd2 c4 22.Nc2 f4 23.Kc3=+ h6 24.Ra1 a5 25.Nd4 Rfc8-/+ 26.Kc2 Be5 27.Rhd1 fg3 28.hg3 b4 29.ab4=+ ab4 30.Be4 Ra8 31.Ra8=+ Ra8 32.d6 Ra2 33.Kb1=+ b3 34.e3 Bd4 35.Rd4 c3 36.Bd5 Kh8 37.Bb3-/+ Rb2 38.Kc1 Rb3 39.Rc4 Ra3 40.Kb1 Kg8 41.e4 Kf7 42.Rc7 Ke6 43.e5 Bb5 44.Kc2 Ba4 (44...Ba4 45.Kd3 Ke5-+) 0–1. gtate (2825) – bertok (2615), net–chess.com, 2008.

4.Nc3 d5 (5.Nd5 Nd5 6.cd5 Qd5=+). DynamicPossibilities – weBNimzo, ChessWorld.net, 2004.

4.Nc3 d6 5.Nf3 Be6 (6.e4 Nc6=+). DynamicPossibilities – Argento1960, ChessWorld.net, 2004.

4.Nf3 e4 5.Nd4 d5=+.

4.Be5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4).

4.Be5 0-0 5.e3 Re8 6.Nf3 Nc6 7.Bb2 d5 8.cd5 Nd5 9.Be2 Bg4 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 Nc6 5.Bb2 0-0 6.e3 d5 7.cd5 Nd5 8.Nf3 Re8 9.Be2 Bg4).

4.Be5 0-0 5.e3 Re8 6.Nf3 d5 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 0-0 5.e3 d5 6.Nf3 Re8).

4.Be5 Nc6 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 Nc6).

4.a3 Nd4 5.Qa4 Be7-/+.

4.a3 d5 5.e3 a6 6.Nf3 e4 7.Nd4 Nd4 8.ed4 Be6 9.c5 Be7 10.Be2 0-0 11.d3 b6 12.Be3 (12.0-0!?=+) 12...bc5-/+ 13.bc5 Bc5?? (13...Rb8 14.Qa4 Bf5 15.Qa6=) 14.de4?? (14.dc5 d4 15.Qc2 de3 16.fe3-/+) 14...de4-/+ 15.Qc3 Bb6 16.0-0 Nd5 17.Qd2 f5 18.f4?? (better is 18.Bg5!? Qd6 19.Bc4-+) 18...Ne3-+ 19.Rc1 (19.Qe3 Bd4 20.Rf3-+) 19...Qd4 20.Qd4 Bd4 (21.Nd2 Nc4 22.Kh1 Nd2-+) 0-1. Argento1960 - tired rook, ChessWorld.net, 2004.

4.b5 Nd4 5.Qb2 d6 6.Nf3 Nf3 7.gf3 g6 (7...Be6 8.d4-/+) 8.e4 (8.d4 ed4 9.Qd4 Bg7-/+) 8...Bg7 9.d3 c6 10.a4 0-0 11.Nc3 Be6 12.Ne2 (12.f4 Bh6=+) 12...d5 (better is 12...Qa5 13.Bd2 Qb6=+) 13.Qe5?? (better is 13.bc6 bc6 14.Qc2-/+) 13...Ne4! 14.d4 (14.fe4 Be5) 14...Be5 (better is 14...Qa5 15.Kd1 Nf2 16.Kc2 Be5-+) 15.fe4 Bg7 16.ed5 (16.bc6 bc6 17.cd5 cd5-+) 16...cd5 17.c5 Rc8 18.Be3 (18.b6 ab6 19.cb6 Bg4-+) 18...Rc5! (19.dc5 Ba1-+) 0-1. Nowakowski - Guziec, corr 1. AMM Poland, 1991.

4.Nf3 e4 5.Ng1 (better 5.b5!? Na5 6.Qc3 Nc4 7.Qc4 ef3 8.ef3=+) 5...Bb4-+ 6.Ba3 Qe7 7.e3 Ba3 8.Na3 Na5 9.Qc3 b6 10.Nb5 Qc5 11.f3 ef3 (11...a6!? 12.Nd4-+) 12.Nf3-/+ 0-0 13.d4 Qc6 14.Ne5 Qb7 15.Bd3? (15.Be2!?-/+) 15...Qg2 (15...a6 16.Na3 Qg2 17.Rf1 Qh2 18.Kd1-+) 16.0-0-0? (better 16.Rf1 d6 17.Nf3-+) 16...Qa2 (16...d6 17.Nc7 Rb8 18.Rdg1 Qa2 19.Nf3-+) 17.Bc2 (17.Qb2 Qb2 18.Kb2 d6 19.Nc7 Rb8-+) 17...Bb7 (better 17...d6 18.Rd2 Bf5 19.Bf5 Nb3 20.Kd1 Qd2 21.Qd2 Nd2 22.Kd2 de5 23.de5 Ne8-+) 18.Kd2 (18.Rd2 Kh8 19.Rf1-+) 18...Bh1 (better 18...Ne4 19.Kd3 Nc3 20.Nc3-+) 19.Rh1 (19.Ke2 Be4 20.Rd2 Bc2 21.Qc2 Qc2 22.Rc2 Rfc8-+) 19…Ne4 (19...Ne4 20.Kd3 Nc3 21.Nc3 Qa3-+) 0-1. Castlegrande – WarlpiriMan, ChessWorld.net, 2014.

4.e3 a5 5.Bb2 ab4 6.cd5 (6.Be5 Nc6 7.Nf3 Ne5 8.Ne5 Bd6+=) 6...Nbd7 (6...Bd6 7.d4 e4 8.a3-/+) 7.Bb5 (7.d4 e4 8.Nd2 Bd6+=) 7...Ra5 (7...Bd6+=) 8.Qd3 (better is 8.a4!?+=) 8...Nd5!-/+ 9.Qd5 (9.Bd7 Qd7 (9...Kd7?! 10.e4=) 10.Be5 Qf5 11.Qf5 Bf5-+) 9...c6 10.Qf3 (10.Qe4 Rb5 (10...cb5?! 11.d4=) 11.d4 Nf6-+) 10...Rb5-+ (10...cb5?! 11.d4-/+) 11.a4? (better is 11.d4-+) 11...ba3 12.Ba3 Rb1! 13.Rb1 Ba3 14.Nh3 (14.Ne2 Nc5 15.0-0 Qd3-+) 14...0-0 (14...Nc5 15.0-0 e4 16.Qh5-+) 15.0-0 Bd6 (15...Nf6 16.e4 Bc5 17.d3-+) 16.Qh5 (16.d3 Nc5 17.Qh5 Nd3-+) 16...Nf6 17.Qh4 h6 (17...Ng4 18.Qd8 Rd8 19.d3-+) 18.f4 (18.f3 e4!-+) 18...ef4 19.Nf4 g5 20.Ne6 (20.Qh6 gf4 21.Qg5 Kh7 22.ef4 Ne4 23.Qh5 Kg7-+) 20...Be6 21.Qh6 (21.Qd4 Be7 22.Qd8 Rd8 23.Rb7 Kf8-+) 21...Ng4 22.Qh5 Nh2 23.Rf2 (23.Rb7 Nf1 24.Kf1 Qf6 25.Kg1 Bg3-+) 23...Bg3 24.Rff1 (24.Qd1-+) 24...Kg7 25.Qe2 Nf1 (25...Nf1 26.Rb4 Rh8-+) 0–1. jaddwarrior (1700) – TheOrang (2760), ChessWorld.net, 2014.

4.e3 Be6 5.Nf3 dc4 6.Bc4 Bc4 7.Qc4 Bd6 8.0-0 Qe7 9.b5 e4 10.Nd4 Qe5 11.g3 Nbd7 12.f4 ef3 13.Rf3 0-0 14.Rf5 Qe7 15.Nc3 Rae8 16.Nd5 Nd5 17.Qd5 Nc5 18.a4 g6 19.Rf3 Qe4 20.Qe4 Ne4 21.d3 Ng5 22.Rf1 Ne6 23.Rf3 Nd4-/+ 24.ed4 Re1 25.Rf1 Re2 26.Bf4 Bf4 27.Rf4 Rfe8 28.Raf1 f5 29.R1f3 Rd2 30.g4 fg4 31.Rg4 Re1 32.Rf1 Rf1 33.Kf1 Rh2 34.Re4 Kf7 35.d5 Rc2 36.Rc4? Rc4 37.dc4 Kf6 38.Ke2 Ke5 39.Kd3 h5 40.a5 h4 41.Kc2 Kd4 42.Kb3?? b6-+ 43.ab6 ab6 44.c5 Kc5 45.d6 cd6 46.Kc3 h3 47.Kd3 h2 48.Ke3 h1Q 49.Ke2 Kd4 50.Kf2 Ke4 51.Ke2 Qh2 (52.Kd1 Kd3 53.Ke1 Qe2#) 0–1. Golem01 – Monik, computer chess game, 2000.

4.Nf3 dc4 5.Qc4 Be6 6.Qb5 Nc6 (6...Qd7 7.Qe5 (7.Qb7? Bd5 8.Ne5 Bb7 9.Nd7 Nbd7-+) 7...Bb4 8.Qg3+=) 7.Ne5= Qd5 (7...a6!? 8.Nc6 ab5 9.Nd8 Kd8+= (worse is 9...Rd8 10.a3+=)) 8.Qd5+= Bd5 (worse is 8...Nd5 9.Nc6 bc6 10.a3+/–) 9.Nc6 Bc6 10.a3 a5 11.ba5 Ra5 12.d3 Bc5 13.e4 (13.Bb2 Ke7+=) 13...Ng4 14.Be3 (better is 14.Ra2!?=) 14...Ne3-/+ 15.fe3 Be3 16.Nd2 Bd4 17.Nc4?? (17.Ra2 f5-/+) 17...Rg5 (better is 17...Ba1 18.Na5 Bc3 19.Ke2 Ba5-+) 18.Rb1-/+ 0-0 19.g3 (19.Kd2!?-/+) 19...Ra8 20.Bh3 g6 (20...b5 21.Nd2 Ra3 22.Ke2-+) 21.Kd2 (21.Rb3 Bc5-/+) 21...b5 22.Ne3 (22.Rbc1 Bb7 23.Ne3 Ra3 24.Rc7 Be4 25.de4 Be3 26.Ke2 Re5-+) 22...Ra3-+ 23.Rb4?? (better is 23.Nc2 Ra2 24.Rhc1-+) 23...Bc3 (23...Bc3 24.Ke2 Bb4-+) 0–1. Hess,Volker – Cridland,Graham, FICGS, 2008. (=1.c4 Nf6 2.b4 e5 3.Qb3 d5)

4.Bb2 d6 5.Nc3 (5.Nf3 0-0=+) 5...0-0 6.e3 Be6 (6...a5 7.b5=+) 7.Nd5 (7.Nf3 Nc6=+) 7...c6 (7...Nbd7 8.d4=+) 8.Nf6 (8.Ne7 Qe7 9.d4 Nbd7=+) 8...Bf6 9.Bd3 (9.Nf3 a5=+) 9...Nd7 10.Qc2 h6 (10...g6 11.Nf3=+) 11.Nf3 (11.Bh7 Kh8=+) 11...Bg4 (11...d5 12.e4=+) 12.Be2 (12.Be4!?=+) 12...e4-/+ 13.Nd4 (13.Bf6 Qf6 14.Nd4 Be2 15.Ke2 Qg6-/+) 13...Bd4 (13...Be2 14.Ke2 c5 15.bc5 dc5 16.Nf5 Bb2 17.Qb2-/+) 14.Bg4=+ Bb2 15.Qb2 Nf6 (15...d5 16.Bd7 Qd7 17.c5=+) 16.Bh3 (16.Be2 a5=) 16...d5 (16...a5 17.0-0=+) 17.Qd4 (17.c5 b6=+) 17...Qc7 18.0-0 Rad8 19.c5= b6 20.a4 bc5 21.bc5 a5 22.Rab1= Rb8 23.Rb6 Rb6 24.cb6+/– Qb7 25.Qc5 Ra8 26.Rc1 Ra6 27.Qc6 Rb6=+ 28.Qb7 Rb7 29.g3 Rb2 30.Rc5= Rd2 31.Ra5 d4 32.Bf5 d3?? 33.Ra8 (33.Ra8 Ne8 34.Re8) 1–0. Steve20 – savage13, ChessWorld.net, 2007.

4.Nc3 d6 5.e4 Nc6 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3 Nd4 9.Qd1 0-0 10.g3 (10.0-0 a5 11.b5 Qd7=) 10...Nf3 (10...a6 11.a3+=) 11.Qf3 Qd7 12.Kf1 (12.Rb1 c6=) 12...Qg4 (12...c6 13.Rb1+=) 13.Kg2 (13.Qg4 Ng4 14.Nd5 Bd8+=) 13...Qf3 14.Kf3 c5 15.b5 b6 16.d3 a6 17.a4 a5 18.Bg5 h6 19.Bf6 Bf6 20.Nd5 Bg5? (better is 20...Bd8+/–) 21.Nb6+– Rad8 22.Nd5 f5 23.b6 (23.h4!? fe4 24.Kg2 Bd2 25.de4 Bb4+–) 23...fe4 24.Kg2 (better is 24.Ke4 Rf2 25.h4+–) 24...ed3= 25.Rhf1 e4 26.Nc7 (26.h4 Bd2 27.Rad1 Bb4=) 26...Bf6 (26...Rb8 27.Nd5+=) 27.Rab1 Rb8 28.Rfe1 (28.Nd5!? Bd8 29.Rfe1=) 28...Bd4-/+ 29.Re4 Rf2 30.Kh3 d5 (better is 30...Rb2 31.Rb2 Bb2-/+) 31.Nd5= (worse is 31.cd5 d2 32.Ne6 Rb6+=) 31...Rbf8? (31...d2 32.Re7+=) 32.Nf4 (32.Rd4 cd4 33.b7+/–) 32...d2= 33.Ng6?? (better is 33.Rd1 Rb8 34.Re6=) 33...R8f6 (better is 33...Rf1 34.Rf1 Rf1 35.Re8 Kh7-+) 34.Ne7 (better is 34.b7 Rf8 35.Nf8 Rf8 36.b8Q Rb8 37.Rb8 Kf7 38.Rb1+–) 34...Kf7= 35.b7 g5?? (better is 35...Rb6! 36.Rb6 d1Q=) 36.b8Q+– g4 37.Rg4 Ke7 38.Re4 (38.Rb7 Ke6 39.Qe8 Kd6 40.Qe7 Kc6 41.Qd7) 38...Re6 39.Rb7 Kf6 40.Qh8 (40.Qh8 Kf5 41.Rd4 cd4 42.Qd4 Rh2 43.Kh2 Re7 44.Qf4 Kg6 45.Re7 d1Q 46.Qf7 Kg5 47.Qg7 Kf5 48.Re5; 40.Qf8 Kg5 41.Qg8 Rg6 42.Rg4 Kf5 43.Qg6 Ke5 44.Re4) 1–0. rhometal (2160) – nando (2175), net–chess.com, 2016.

4.Nf3 e4 5.Nd4 d5=+.

4.g3 0-0 5.Bg2 c5 6.b5 e4 (6...d6!?=+) 7.Nc3= b6 (7...d5!?=) 8.Ne4+= Bb7?? (better is 8...Ne4 9.Be4 Bf6+/–) 9.Nf6+– Bf6 10.Bb7 Ba1 11.Ba8 (11...Nc6 12.Bc6 (12.bc6?! Qa8 13.Qf3 dc6+–) 12...dc6 13.bc6+–) 1–0. Freyser – BeerClark, ChessWorld.net, 2004.

4.Qg3 Bb4 5.Qe5 Be7=+.

4.Bb2 d6 5.Qb3 0-0 6.Nc3 Bf5 7.e3 Nbd7 8.Nf3 e4 9.Nh4 Be6 10.g3 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qa8 14.Bb2 h6 15.Be2 Bh3 16.Rg1 Nb6 (16...Re8 17.g4 Nh7 18.Rg3+–) 17.f3 d5 18.fe4 de4 19.Ng2 Rd8 20.Nf4 Bd7 21.Nh5 Nh5 22.Bh5 Re8 23.Rf1 Be6 24.Be2 f5= 25.Kf2 Qd8 26.Rd1 Qg5 27.d4?? ed3!-+ 28.Rd3 Bc4 29.Qd1 Bd3 30.Qd3 0–1. Hoelldorfer,August – Semenko,Georg (1750), Bayern–ch Seniors, 1993.

4.e3 0-0 5.Bb2 Re8 6.Nf3 d6 7.Be2 a5 (7...a6 8.d4 Bb4 9.Bc3 Bc3 10.Nc3=) 8.a4 Bg4 9.h3 Bh5 10.Nc3 h6 (10...e4 11.Nh2 Be2 12.Qe2=) 11.0-0= c6 12.d4 ed4 13.ed4 Bb4 14.Bd3 (14.Na2 d5=) 14...Bc3 (14...d5 15.Na2=) 15.Bc3 d5 16.bc6 Nc6 17.c5 (17.Rc1!?=) 17...Ne4+= 18.Bb2 Qf6 (18...Bf3 19.Qf3 Nd2 20.Qf5+=) 19.g4+= Bg6 20.Ne5 Qh4 21.Ng6 fg6 22.Kg2 (better is 22.Ra3+=) 22...Rf8 Increases the pressure on the backward pawn (22...Ng5 23.Rh1 Rf8-+) 23.Be4+= de4 24.Ra3 (24.f3 Qe7+=) 24...Nb4= 25.Qb3 Nd5?? (better is 25...Kh7 26.Qg3 Qe7+=) 26.Qb7 (better is 26.Qd5 Kh7 27.Qe4+–) 26...Nf4-+ 27.Kh2 Rab8 28.Qc6?? (better is 28.Qe4 Rb2 29.Rf3-+) 28...Rb2 29.Rg3 (29.Qe4 Nh3! 30.Qd5 Kh7 31.Qg2 Rff2 32.Qf2 Nf2 33.Kg2 Qg4 34.Rg3 Ne4 35.Kh1 Qg3 36.d5 Qg2#) 29...Re2 (29...Nh3 30.Qe6 Kh8 31.Qf5 Nf2 32.Kg2 Ng4 33.Rf2 Rf2 34.Qf2 Rf2 35.Kg1 Qh2#) 30.Qb5 Nd3 0–1. Hoelldorfer,August – Fiedler,Werner (1845), Bayern–ch Seniors, 1994. (=1.c4 Nf6 2.b4 e5 3.b5 Bc5)

4.e3 0-0 5.Qb3 d5 6.Nf3 e4 7.Nd4 Bd4 8.ed4 dc4 9.Bc4 Qd4 10.Bb2 Qb6 11.Nc3 c5 12.Nd5 Nd5 13.Bd5 Nd7 14.a4 Nf6 15.Qg3 Bf5 16.a5 Qd8 17.Bb7 Rb8 18.a6 Re8 19.0-0 ½–½. Hoelldorfer,August – Froehling,Guenter, Bayern–ch Seniors, 1995.

4.e3 d5 5.Bb2 e4 6.cd5 0-0 7.Qc2= Bd6 8.Nc3 Nbd7 9.Ne4+/– Ne4 10.Qe4 Nf6 11.Qc4 Bf5 12.Nf3 Re8 13.Bd3 Bd3 14.Qd3 h6 15.Rb1 Bc5 16.Bf6 Qf6 17.Qc4 Bd6 18.0-0 Qe7 19.d3 Kh8 20.Rfc1 Rad8 21.Rc2 f6 22.Nd4 Qe5 23.g3 f5 24.Ne6 Rc8 25.e4 fe4 26.de4 b6 27.f4 Qh5 28.e5 Re6 29.de6 Bc5 30.Kg2 Qf5 31.Rd1 Re8 32.Rd7 Re6 33.Rc7 Re7 34.Re7 Be7 35.Qc8 (35...Qc8 36.Rc8 Kh7 37.Rc7+–) 1–0. weBNimzo – Argento1960, ChessWorld.net, 2004.

4.Bb2 0-0 5.Nd5 (5.a3 Bc3 6.Bc3 d6-+) 5...Nd5-+ 6.cd5 d6 7.Nf3 Bg4 (7...c5 8.Qc2-/+) 8.a3 (8.Qb3 Na6-/+) 8...Ba5 (8...Bc5-/+) 9.g3 (9.Qa4 Bf3 10.gf3 c6-/+) 9...Nd7 (9...Bf3 10.ef3 Nd7 11.Qc2-+) 10.Bg2 Nc5 (10...Nf6 11.Qa4 Bb6 12.0-0-+) 11.0-0-/+ f5 (11...e4 12.Ne1-/+) 12.Nh4 (12.d4 ed4 13.Bd4 f4-/+) 12...b5 (12...Qe7 13.f3 Bh5 14.Bh3-/+) 13.f3 (13.d4 Na4 14.Qc2 Nb2 15.Qb2 ed4 16.Qb5 Bc3-/+) 13...Bh5 14.Qc2 (better is 14.Rb1-/+) 14...Bg6 (better is 14...Bb6 15.Rab1 f4-+) 15.Ng6 (15.d4 Na4 16.Ng6 hg6 17.de5 Bb6 18.Kh1 Nb2 19.Qb2 de5 20.Qb5 Qd6=) 15...hg6 16.f4 (16.e3 Qe7=) 16...Bb6+= 17.Kh1 (17.Rab1+=) 17...Na4 (17...e4 18.Rab1+=) 18.Bc1 (18.fe5 Nb2 19.Qb2 de5 20.Qb5 Qd6=) 18...Bd4 (18...ef4 19.gf4 a6 20.e3+=) 19.Rb1= e4 (19...a6 20.e3 Bc5 21.d3=) 20.e3 (20.Rb5 Nc5+=) 20...Bb6 (20...Bf6 21.Rb5 Nc5 22.g4=) 21.Rb5 Nc5 22.Bb2 (22.Rb1 Nd3=) 22...Nd3 (22...Qd7 23.Rb4=) 23.Qc3 (23.Rb1 g5+=) 23...Nb2 (23...Qd7 24.Ba1=) 24.Rb2+= a5 (24...Rb8 25.Rfb1+=) 25.Bh3 (25.d3 ed3 26.Qd3 g5+=) 25...a4 26.Rg1 (26.Rc1 g5+=) 26...Ra5 (26...Qf6 27.Qf6 gf6 28.g4 fg4 29.Bg4+=) 27.g4 (27.d4 ed3 (27...Rd5? 28.Qc4 Qa8 29.Rb5+–) 28.Qd3 Qf6=) 27...Rc5 (27...Rd5 28.Qc4 Qa8 29.gf5 gf5 30.Rg5+/–) 28.Qb4 Qh4 (28...Rd5 29.Qc4 (worse is 29.Qa4 Ra5 30.Qb3 d5=) 29...Qa8 30.gf5 gf5 31.Rg5+/–) 29.Bg2 (better is 29.Bf1=) 29...fg4 (better is 29...Kh8!?=) 30.Qa4 (30.Be4 Ra5+/–) 30...g3+/– 31.h3 Rd5 32.Qd7 (32.Qe4!? Rdf5 33.Qe6 Kh7 34.Rgb1+=) 32...Ra5 33.Be4 (33.Qe6 Kh8 34.Qe4 Ra3 35.Qg6 d5+=) 33...g5= 34.Bf5?? (34.Rf1 Re5 35.Rb4 (35.fe5 Rf1 36.Kg2 Qe4 37.Kf1 Qf3 38.Ke1 g2 39.Qe8 Kh7 40.Qh5 Qh5-+) 35...gf4 36.ef4-/+) 34...Raf5-+ 35.Rg2 (35.Qe6 Kh8 36.Kg2 gf4 37.Rf1 f3 38.Rf3 Rf3 39.d3 Be3 40.Qe8 Re8 41.Ra2 Rf2 42.Rf2 gf2 43.a4 f1Q 44.Kf1 Qf2) 35...Qh3 36.Kg1 gf4 (36...Rf4 37.Rb1 Qd7 38.Rg3 Qf5 39.Rb4 Rf1 40.Kh2 Rh1 41.Kh1 Qf1 42.Kh2 Rf2 43.Rg2 Qg2) 37.d4 f3 38.e4 Bd4 (38...Bd4 39.Kf1 Qh1 40.Rg1 Qg1) 0–1. mi – tche, net–chess.com, 2017.

4.Bb2 Nc6 5.a3 Ba5 6.e3 0-0 7.Be2 d6 8.Nf3 Be6 9.0-0 Bg4 10.Nd5 Ne4 11.d3 Bf3 12.de4 (12.gf3 Nd2 13.Re1 Qg5 14.Kh1 Rfc8-/+) 12...Be4-+ 13.f3 Bf5 14.e4 Be6 15.Bd3 Bd5 (15...Qh4!? 16.f4-+) 16.cd5-/+ Nd4 17.Bd4 ed4 18.a4 (18.Rb1 Bb6-/+) 18...Qg5 19.Kh1 (19.f4 Qf6-/+) 19...c5-+ 20.dc6 bc6 21.Qc2 Rac8 22.f4 Qh6 23.g3 g6 24.f5 d5 25.fg6 hg6 26.Rf6 Kg7 27.Rc6 Rc6 28.Qc6 Rh8 29.h4 Qe3 30.Qb5?? Bc3 31.Rg1-+ g5 32.ed5 Kf6?? 33.Rf1+= Ke7?? 34.Qb7 Kf8 35.Qf7 1–0. Tricky Rabbitt – MikeLWhit, ChessWorld.net, 2005.

4.f3 Nc6 5.e3 Bc3 (5...0-0 6.Nge2-+) 6.dc3 0-0 7.e4 d6 (7...Nh5 8.Nh3-+) 8.Bg5 (8.Bd3 Nd7-+) 8...h6 9.Bh4 b6 10.Bd3 Na5 11.Ne2 Be6 (11...Ba6 12.Rb1-+) 12.Qa4 Qe8 13.Qb4 (13.Qe8 Rae8 (13...Ne8?! 14.Be7+=) 14.Bf6 gf6-+) 13...Nd7 14.Ng3?? (14.Bf2-+) 14...Nc5 15.Be2 g5 16.Nh5 (16.Bg5 hg5 17.Kf2 f5 18.Nf5 Bf5 19.ef5 e4-+) 16...f6 17.f4 (17.Nf6 Rf6 18.Bf2-+) 17...Bg4 18.Nf6 (18.Bg4 Nd3 (18...gh4?! 19.0-0-+) 19.Kf1 Nb4 (19...gh4?! 20.Qb1 Nc5 21.Qe1-+) 20.cb4 Nc4-+) 18...Rf6 19.fg5 (19.Qb5 Qh5 20.Bg5 Be2 21.Bf6 Bc4 22.Qc4 Nc4-+) 19...Be2 20.Ke2 (20.gf6 Qh5 21.f7 Kf8-+) 20...Qh5 21.Ke3 Rf4 22.Be1 Re4 23.Kd2 (23.Kf2 Re2 24.Kg1 Qg5 25.Bf2 Rf2 26.Kf2 Ne4 27.Kf3 Qf4 28.Ke2 Qd2 29.Kf3 Rf8 30.Kg4 Qg5 31.Kh3 Qh5) 23...Qe2 24.Kc1 Nd3 25.Kb1 Qd1 0–1. reversetrick – westaust (2205), gameknot.com, 2013.

4.a3 a5 5.b5 Nd4 (5...Na7!?-/+) 6.e3= Ne6 7.c6 (7.d4!?=) 7...dc6-/+ 8.bc6 bc6 9.Bb2 Bd6 10.Nc3 0-0 11.Bc4 Rb8 12.Na4 (12.Rb1 Nc5-/+) 12...Nc5 13.Bc3 Be6 14.Nc5 (14.Be6!? Ne6 15.Ba5+=) 14...Bc4-/+ (14...Bc5?! 15.Be6 fe6 16.Ba5=) 15.d4 Nd5 16.Qd2 (better is 16.Ba5 Qe7 17.Rc1 ed4 18.Qd4 Bc5 19.Qc4 Ne3 20.Qe2 (20.fe3 Qe3 21.Ne2 Qf2 22.Kd1 Rfd8 23.Bd2 Be3-+) 20...Ba3 21.Qe3 Qe3 22.fe3 Bc1 23.Kf2-+) 16...Qg5 17.g3 Bc5 18.dc5 Qf5 19.Ba5 (19.Rc1 Rb3 20.g4 Qg4 21.Be5-+) 19...Ne3! 20.Qe3 (20.Qe3 Rb1; 20.fe3 Qf1) 20...Rb1 21.Rb1 Qb1 22.Kd2 Rd8 (22...Rd8 23.Qd3 Rd3 24.Ke2 Qd1) 0-1. megarex - sergegr (2150), gameknot.com, 2010. (=1.c4 Nf6 2.b4 e5)

4.b5 Nd4 5.a4? d5 6.e3=+ Nf5 7.c6 bc6 8.bc6 Bb4 9.Qb3 0-0?? 10.Nc3?? Bc3 11.dc3 Ne4 12.Bd3 Nf2 13.Kf2= Qh4 14.g3 Ng3!-+ 15.hg3 Qg5?? 16.e4 Qg4 17.ed5 Bf5 18.Bf5 Qf5 19.Nf3 e4 20.c4 Rae8 21.Ba3 e3 22.Ke2 Rb8 23.Qc3 Qg4 24.Bb2 Rb2 25.Qb2 Qg3 26.Rhg1 Qf2-+ 27.Kd3 Qb2 28.Ke3 Re8 29.Kf4 Qe2 30.Rae1 Re4 31.Kg5 h6 32.Kh5 Qf3 (32...Qf3 33.Rg4 Qg4) 0–1. WirralBoy – interloper, ChessWorld.net, 2011.

4.e3 Nb4!? 5.a3 Nbd5-/+.

4.e3 b6 5.b5=+ White gets the initiative 5...Nb4 6.d4 (6.Bb2!? Qe7 7.a3=) 6...ed4-/+ 7.ed4 Bb7 8.a3 Qe7 9.Be3 (better 9.Ne2 Nbd5 10.cb6 ab6 11.f3-/+) 9...bc5?? (better 9...Nbd5 10.Qf3 bc5-+) 10.ab4+- Nd5? (better 10...cb4 11.Nf3 Ng4+-) 11.bc5+- (11.dc5?! Ne3 12.fe3 Qh4 13.Kd2 Qb4 14.Nc3 Qb2 15.Kd3 Bc5+-) 11...Ne3 12.fe3 Qh4 (12...Qe3 13.Qe2 Qe2 14.Ne2+-) 13.Kd2 Qf2 14.Qe2 Qf6 15.Nf3 (15.Nc3 Be7+-) 15...Be7? (15...Bc5 16.Nc3 Bd6+-) 16.Nc3 0-0 17.Ne5 c6 (17...Rfd8 18.Qh5 g6+-) 18.Nd7 Qf5 19.Nf8 Kf8 20.g4 (20.b6 Bc5 21.Ra5 Qd7 22.Rc5 ab6+-) 20...Qg6 (20...Qd7 21.Bg2 cb5 22.Bb7 Qb7 23.Qb5+-) 21.Bg2 Rb8 (21...Rd8 22.Be4 Qh6 23.Ke1+-) 22.Be4 Qe6 23.Ra7 g6 (23...Qc8 24.Qf3 h5 25.bc6+-) 24.Rb1 f5 (24...Qc8 25.Qf3 Ba8 26.Bc6 Bc6 27.bc6 Rb1 28.Nb1+-) 25.Bd3 (better 25.gf5 gf5 26.bc6 fe4 27.Qf2 Qf7+-) 25…f4 (25...f4 26.bc6 Qc6+-; 25...Bc8 26.gf5 Qf6 27.fg6 hg6 28.Rf1+-). rhometal – vaingrecsky, net-chess.com, 2020.

4.cd6 Bd6 5.a3 0-0 6.Nc3 c5 7.Nb5 Be7 8.bc5 Bc5 9.Qc2 Qb6 10.e3 Be6 11.Rb1 Rc8 12.Nc3 Qc7 13.Nf3 Nbd7 14.Ng5 Bg4 15.Bc4 Bh5 16.Bd3 Bg6 17.Bg6 hg6 18.0-0 Bd6 19.Qa2 Qc4 20.Qc4+/– Rc4 21.Rb7 Nc5 22.Rf7 Nh7 23.f4 ef4 24.ef4 Ng5 25.fg5 Nd3 26.R7f3 Bc5 27.Kh1 Ne5 28.Rg3 Rf8 29.Rf8 Kf8 30.d4 Bd4 31.Bd2 Kf7 32.Ne2 Bb6 33.Be3 Rc2 34.Bb6 ab6 35.Ng1 Nc4 36.h3 Ke6 37.Nf3 Rc1= 38.Kh2 Na3 39.Nd4 Kd5 40.Ne2 Re1 41.Nf4 Ke4 42.Ng6 Nc4 43.Rf3 Ne3 44.Rf4 Kd3 45.h4 Nf1 46.Kh3 Ne3 47.Rf7 Rh1 48.Kg3. weBNimzo – tired rook, ChessWorld.net, 2004.

4.Bd2 Bd2 5.Nd2 0-0 6.e4 c6 7.Ngf3 d5 8.cd5 cd5 9.Ne5 Nc6 10.Nc6=+ bc6 11.g3 de4 12.Ne4 Re8 13.Bg2 Bf5 14.0-0 Ne4 15.de4 Be4 16.Qd8 Rad8 17.Be4 Re4 18.Rac1 Rc8 19.Rfd1 Re7 20.a4 g6 21.a5 a6 22.Rd6 Rec7 23.Rb1 c5 24.Ra6= c4 25.Kf1 Kg7 26.Rab6 c3 27.Rc1 Ra8 28.a6 c2 29.Ke2 f6 30.Kd2 h5? 31.Rc2+– Rc2 32.Kc2 f5 33.Rb7 Kf6 34.a7 Kg5 35.Kd3 h4 36.gh4 Kh4 37.Ke3 Kh3 38.Kf4 38...Kh2 39.Kg5 Kg2 40.Kg6?? f4+= 41.Kg5 f3= 42.Kf4 Kf2 43.Ke4 Ke2? 44.Rf7?? f2-+ 45.Kd4 f1Q 46.Rf1 Kf1 47.Kc5 Ra7 48.Kb6 Ra4 49.Kb5 Rd4 50.Kc5 Rh4 51.Kd5 Kf2 52.Ke5 Ke3 53.Kd5 Re4 54.Kc5 Kd3 55.Kd5 Rd4 56.Ke5 Kc4 57.Kf5 Kd5 58.Kf6 Re4 59.Kf5 Kd4 60.Kf6 Re5 61.Kg6 Kd5 62.Kf6 Kd6 63.Kf7 Re6 64.Kg7 Ke7 65.Kg8 Rf6 66.Kg7 Re6 67.Kg8 Rg6 68.Kh7 (68.Kh8 Ke6 69.Kh7 Kf7 70.Kh8 Rh6#). belphegor – dadeetdeetbleep, Caissa.com, 2004.

4.Nd2 0-0 5.Bb2 d6 6.Ngf3 Bg4 7.a3 Bf3 8.ab4 Bh5 9.g3 a6 10.Bg2 Nc6 11.Bc3 d5 12.0-0 d4 13.Bb2 Nb4 14.Ba3 c5 15.Bb4 cb4 16.Bb7 Ra7 17.Ba6 Qa8 18.Bb5 Ra1 19.Qa1 Be2 20.Qa8 Ra8 21.Re1 Bd3 22.Re5? Ra1 23.Kg2 Rd1 24.Nb3 Bf1 25.Kf3 Rd3 26.Kf4 Rb3 27.Rc5 g6 (28.Rc7 Kg7-+) 0–1. BeerClark – tired rook, ChessWorld.net, 2004.

4.Qe2=+ (4...d5 5.f3-/+). athar – jlg292, ChessWorld.net, 2005.

4.f3 Qh4 5.g3 Ng3! 6.Bg2 Nh1 7.Kf1 Qf2# 0–1. galleygirl – smithche (1945), net–chess.com, 2001.

4.Ne5 Bb4?! 5.Bb2-/+.

4.Ne5 d6 5.Qa4 c6 6.Nf7 Kf7 -+.

3.Ba3 d5 4.Qa4 c6 (4...Qd7 5.b5=+) 5.cd5 (5.b5 dc4 6.Qc4 Bd7=+) 5...Nd5 6.b5 Qf6-+ 7.Bf8?? (better is 7.d4 Bb4! 8.Bb4 Qd4 9.Nc3 Nc3 10.e3 Qe3 11.fe3 Na4 12.Nf3-+) 7...Qa1 (7...Kf8?! 8.d4 cb5 9.Qa3 b4 10.Qb2=+; 7...Rf8?! 8.d4=+) 8.Bb4 Qb1 9.Qd1 Qb4 10.bc6 Nc6 11.e3 0-0 12.Nf3 e5 13.h4 Bg4 14.g3 e4 15.Qb3 Bf3 16.Rg1 Ne5 17.Qb4 Nb4 18.a3 Nc2 0–1. Benreguia,Frederic – Mena,Javier, FICGS, 2006.

3.Ba3 Be7 4.b5 0-0 5.Be7 Qe7 6.d4 a6 7.ba6 Na6 8.Nf3 Qb4 9.Nbd2 Qb2 10.Qb1 Qc3 11.Qd1 Nb4 12.Rc1 Qb2 13.a4 Ra4 14.e3 Ra2 15.Be2 Nc2 16.Kf1 Ng4 17.Kg1 Nce3 18.fe3 Ne3 19.Qe1 Nc2 20.Rc2 Qc2 21.c5 d6 22.Bc4 Rb2 23.cd6 cd6 24.Qf1 Qa4 25.Qf2 b5 26.Bf1 Bb7 27.Qe3 Rc8 28.Ne4 Qa1 29.Qf4 Be4 30.Qe4 Rc1 31.Qd3 Qa2 32.Nh4 Rb3 33.Qb3 Qb3 34.h3 Qg3 35.Nf3 Rc2 36.d5 ed5 37.Nd4 Qf2 38.Kh2 Qf4 39.Kg1 Qd4 40.Kh2 Qf4 41.Kg1 Rc1 42.Rh2 Rf1# 0–1. Holmes03 – Yace022, computer chess game, 2000.

3.Qa4 a5 4.b5 d5 5.cd5 ed5 6.Ba3 Nbd7 7.Bf8 Nf8 8.Nf3 Qd6 9.Nc3 Bg4 10.Nd4 N8d7 11.f3 Nc5 12.Qc2 Ne6 13.e3 Nd4 14.ed4 Bd7 15.Bd3 0-0 16.0-0 Rfe8 17.Rfe1 Re1 18.Re1 g6 19.Ne2 b6 20.g3 Re8 21.Rc1 ½–½. COMP Rybka3 x64 (2530) – Fournier,Frederic, Active, 2009.

3.Qb3 a5 4.ba5 Nc6 5.Bb2 (5.Nf3 d5 6.d4 Na5 (6...Ra5?! 7.e3=) 7.Qb5 Qd7 8.Qd7 Bd7-/+) 5...Na5 6.Qc2 Be7 (6...d5 7.cd5 ed5 8.e3=+) 7.e4 d6 (7...d5 8.e5 Nd7 9.cd5 ed5 10.Nf3=+) 8.Nf3 (8.d4 0-0=) 8...e5 (8...Nc6 9.d4=) 9.d4 Nc6 (9...ed4 10.Nd4 0-0 11.Bd3=) 10.Nbd2 (10.de5 de5 11.Ne5 Bb4 12.Bc3 Bc3 13.Qc3 Qd6 14.Nc6 Qc6 15.Qe5 Be6+=) 10...ed4 11.Nd4 0-0 12.Nf5 Bf5-/+ 13.ef5 Nb4 14.Qb1 d5 15.a3=+ Nc6 16.Bd3 dc4 17.Nc4 Qd5 18.Ne3 Qa5-/+ 19.Kf1 Rad8 20.g4 Qd2-/+ 21.Bc2 Bc5 22.Bf6=+ Be3 23.fe3 gf6 24.Rg1 Qe3-/+ 25.g5?? Qf3 26.Ke1-+ Rfe8 27.Be4 Re4 28.Qe4 Qe4 29.Kf2 Rd2 30.Kf1 Qe2 0-1. ooioo (2350) - mensa (2275), net-chess.com, 2005.

3.Qb3 c6 4.Nf3 Be7 5.e3 0-0 6.d3 d5 7.c5 Nbd7 8.Bb2 Qc7 9.Be2 e5 10.0-0 a6 (10...b6 11.Qc3=) 11.Nbd2 Re8 12.Rfe1 e4 (12...b6 13.cb6 Qb6 14.Ne5 Bb4 15.Nd7 Nd7 16.Bc3=) 13.de4+= de4 14.Ng5 Bd8? (better is 14...Ne5+/–) 15.Qf7+– (15...Kh8 16.Ne6 Re6 17.Qe6 Nc5 18.Qc4+–) 1–0. Argento1960 – 2good2be1, ChessWorld.net, 2004.

3.Qb3 g6 4.Nf3 Bg7 5.d4 0-0 6.Nc3 d5 7.e3 b6 8.cd5 ed5 9.Be2 Bb7 10.0-0 Nc6 11.Bb2 Ne7 12.a4 Ne4 13.Rfc1 Nf5 14.b5 Nh4 (better is 14...h6!?+/–) 15.Nh4+– Qh4 16.Ne4 Qe4 17.Rc7 Bc8 (17...Rfb8+–) 18.Bf3 Qf5 (18...Qh4 19.Bd5 Be6 20.Be6 fe6 21.Qe6 Kh8 22.Rf1+–) 19.Qd5 (19.Bd5?! Be6 20.e4 Bd5 21.Qd5 Qd5 22.ed5 Rfd8+–) 19...Rb8 20.Ba3 Be6 (20...Re8 21.Qf5 Bf5 22.Ra7+–) 21.Qf5 Bf5 22.Bf8 Bf8 23.Bd5 Be6 24.Be6 fe6 25.Ra7 Bb4 26.Rc1 Rd8 27.Rcc7 e5 (27...g5 28.Rh7 Rc8 29.g4+–) 28.Rg7 Kf8 29.Rh7 Kg8 (29...Ke8 30.Rh8 Bf8 31.Rc7+–) 30.Rag7 Kf8 31.Rg6 (31...ed4 32.ed4 Rd4 33.g3+–) 1–0. marekt – DanielMartin, ChessWorld.net, 2004.

3.b5 Bb4 4.a3 Ba5 5.Nc3 0-0 6.Bb2 d5 7.e3 d4 8.ed4 c6 9.Nf3 a6 10.Be2 (10.ba6 Na6 11.Be2 b6+=) 10...ab5= 11.cb5 Nd5 12.0-0 Bd7 (12...b6 13.Bc4=) 13.Ne5 f6 14.Nd7 Nd7 15.bc6 bc6 16.Ne4 Rb8 17.Rb1 f5 18.Nc3 (18.Nc5 Qe7+/–) 18...Qg5 19.Nd5 cd5 20.Bc3 Bc3 (20...Bc7!?+=) 21.dc3+/– Rb1 22.Qb1 h5 (22...Rb8!? 23.Qd3 Rb2+/–) 23.f4 Qg6 24.Qb7 Nf6 25.c4 Ne4 26.cd5 ed5 (26...Qf6 27.Qb4 ed5 28.Bh5+–) 27.Qd5 Kh8 28.Bf3 Qa6?! (28...h4+–) 29.Be4 fe4 30.Qh5 Qh6 (30...Kg8 31.Qd5 Kh8 32.Qe4 Qa3 33.f5+–) 31.Qh6 gh6 32.Rf2 e3 (32...Kg7 33.g3+–) 33.Rf3 Re8 34.Kf1 e2 35.Ke1 Re4 36.f5 Rd4 37.f6 Kg8 38.f7 Kf8 39.Ke2 Rd7 40.a4 Rd4 41.a5 Rd5 42.Ra3 (better is 42.a6!? Rd6 43.Ra3 Rd8+–) 42...Rd7 43.a6 Ra7 44.g4 Kf7 45.Ke3 Kg6 46.Ra5 Kf6 47.Kd4 Ke6 (47...Kg6 48.Kc5+–) 48.Kc5 Ke5 (48...Ra8 49.a7 Ke5+–) 49.Kb6 (49.Kb6 Kd4 50.Ka7 Ke3 51.Kb6 Kd2 52.a7 h5 53.Ra2 Kc3 54.a8Q Kd4 55.Qe8 Kd3 56.Qe2 Kd4 57.Rd2 Kc3 58.Qe3 Kc4 59.Rd4) 1–0. jboger (2365) – croach (2375), net–chess.com, 2016.

3.b5 Ne4 4.Nh3 (4.Bb2 d5=+) 4...Bc5 (4...Qf6 5.Nc3 Nc3 6.dc3-/+) 5.Nc3 (better is 5.Bb2=+) 5...Qf6 (5...Nc3 6.dc3 Qf6-/+) 6.Qc2?? (better is 6.Ne4 Bf2 7.Nhf2 Qa1 8.Nc3+/–) 6...Nf2 (6...Bf2 7.Nf2 Nf2 8.Rg1-+) 7.Nf2-/+ Qf2 8.Kd1 a6 9.Ne4=+ Qf4?? 10.Nc5 b6 11.Nd3 Qd4 12.Qc3 Qc3 13.dc3 ab5 14.e4?? Nc6? 15.c5 Ra4. realme – caddydoc, net–chess.com, 2002.

3.b5 Be7 4.Nf3 0-0 5.e3 c5 6.Bb2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

3.Nc3 d5 4.cd5 ed5 5.d4 (5.a3!?=+) 5...Bb4-/+ 6.Nf3?? (better 6.Bd2-/+) 6...Bc3-+ 7.Bd2 Ba1 8.Qa1 0-0 9.e3 Ne4 10.Bd3 Nd2 11.Nd2 c5! 12.0-0 (12.dc5 Re8 Combination) 12...Nc6 (12...c4 13.Bc2-+) 13.Be2 (13.dc5 Re8-+) 13...c4 14.Nb1 (14.Qb2 Qe7-+) 14...Bf5 (14...b5 15.Rc1-+) 15.Nc3 Bg6 (15...Rc8 16.Qb2 Qa5 17.Rc1-+) 16.Bf3 Be4! 17.Ne4 (17.Ne4 de4 Combination; 17.Be4 de4 Combination) 17...de4 18.Be4 Rc8 (18...Qd7 19.Qb2 f5 20.Bf3-+) 19.Bf3 (19.Qb1 Qh4-+) 19...b5 20.Rc1 a5 (20...Nb4 21.Rb1 Nd3 22.Qc3-+) 21.a4 (21.Qb1 Na7-+) 21...ba4 (21...b4 22.Rc4 Ne5 23.Rc8 Nf3 24.gf3 Qg5 25.Kh1 Rc8 26.Qb1-+) 22.Rc4 (22.Bg4 Rc7 23.Rc4 Nb4-+) 22...Nb4 (22...Ne5! 23.Rc8 Nf3 24.gf3 Qg5 25.Kf1 Qb5 26.Rc4 Qc4 27.Kg2-+) 23.Rc8 Qc8 24.h4 0-1. Yanidze (2400) - AmaraMaple (2380), 2020 Summer Marathon, lichess.org, 2020. (=1.c4 A15: English Opening: 1...Nf6 1...Nf6 2.b4 e6)

3.c5 a6 4.Bb2 Be7 5.Bf6 Bf6 6.Nc3 Bc3 (6...0-0 7.e3=+) 7.dc3= Nc6 8.e4 Qf6 9.Ne2 (9.Qf3 Qe7=) 9...Ne5 (9...0-0 10.a4=+) 10.Nd4 0-0 11.Be2 b5 12.0-0 c6 (better is 12...Qf4!?=) 13.a4 ba4 14.Ra4 Bb7 15.f4 Ng6 16.f5 (16.e5 Qh4 17.Nf3 Qf4 18.Qd7 Qe3 19.Rf2+=) 16...Ne7? (better is 16...ef5 17.Rf5 Qe7+/–) 17.fe6+– Qf1 18.Kf1 fe6 19.Bf3 d5 20.Ne6 Rf7 21.Nc7 Ra7 22.ed5 cd5 23.Ke1 Bc6 24.b5 Rc7 25.bc6 Nc6 26.Bd5 Ne5 27.Be6 Rcd7 28.Bf7 Kf7 29.Qh5 Ng6 30.Qf5 Ke8 31.Re4 Re7 32.Qc8 Kf7 33.Re7 Ne7 34.Qd7 g6 35.c6 Kf6 36.c7 a5 37.Qd6 Kf7 38.Qd7 Kf6 39.c8Q Nc8 40.Qc8 (40...h6 41.c4+–) 1–0. xCalvin – Tricky Rabbitt, ChessWorld.net, 2005.

3.c5 c6 4.d3 (4.d4 Na6=) 4...b6 5.e4 (5.d4 d6 6.cb6 ab6=+) 5...bc5 6.bc5 Bc5 7.Bb2? (7.d4 Bb6 8.Nc3 Ba5-/+) 7...0-0 (7...Bf2 8.Kf2 Qb6 9.Kg3 Qb2 10.Nd2-+) 8.Be2? (8.d4 Bb4 9.Bc3 Be7-/+) 8...d5 (8...Bf2 9.Kf2 Qb6 10.Kg3 Qb2 11.Nd2-+) 9.ed5 (9.Qc2 Bb4 10.Nc3 d4-+) 9...cd5 10.Nf3 Bb4 (10...Qb6!? 11.Bf6 Bf2 12.Kf1 gf6 13.d4-+) 11.Nbd2-/+ Nbd7 12.Ne5 (12.0-0 Bd6-/+) 12...Qa5 (12...Ne5 13.Be5 Nd7 14.d4-/+) 13.Nd7 (13.Nc6!? Qb6 14.Nb4 Qb4 15.Rb1=+) 13...Nd7-+ 14.a3 Bd2 (better is 14...Bd6!?-+) 15.Qd2=+ Qd2 16.Kd2 Nc5 (16...e5 17.Rhc1-/+) 17.Ke3 Rb8 18.Bd4 Nb3 19.Rab1 Bd7 (19...a5 20.Be5 Rb7 21.d4=) 20.Ba7+= Rb7 21.Bc5?? (better is 21.Bd4+=) 21...Nc5-+ 22.Rb7 Nb7 23.Ra1 (23.Rc1 Rc8 24.Rc8 Bc8-+) 23...Ra8 24.d4 Nd6 25.f3 (25.g4 Ra4-+) 25…Nf5 (26.Kd2 Nd4-+) 0–1. ahmed sharkawy_1 – melr11, ChessWorld.net, 2005.

3.c5 Nc6 4.d4 (4.b5!? Ne7 5.Nf3=) 4...Nb4-/+ 5.Qa4 Nc6 6.Nf3 d6 7.cd6 Bd6 8.e3 Bd7 9.Qc2 0-0 10.Ng5 h6 11.Ne4 Bb4 (11...Nb4 12.Nf6 Qf6 13.Qc3-+) 12.Bd2 Bd2 (better is 12...Ne4 13.Qe4 Bd6-/+) 13.Qd2?? (better is 13.Nbd2 Ne4 14.Qe4=+) 13...Ne4-+ 14.Qc2 f5 15.Bc4 Kh8 16.a3 Qg5 17.0-0 Ne7 18.f4 Qg6 19.Nd2 Bc6 20.Ne4 Be4 21.Qd2 Nd5 22.Bd5 Bd5 23.g3 Qg4 24.a4 h5 25.Rac1 c6 26.a5 a6 27.Rb1 Rab8 28.Qb4 Rf7 29.Qd6 Qe2 30.Rf2 Qe3= 31.Qb8 Kh7 32.Qe8? Rf6 33.Qh5=+ Rh6 34.Qg5?? Qe4 35.Kf1 Qh1 36.Ke2 Qb1 37.Qe7 Qc2 38.Kf1 Qd1 0–1. xCalvin – melr11, ChessWorld.net, 2005.

3.c5 d5 4.a3 Be7 5.d4 0-0 6.f3 (6.Nf3 a5=+) 6...Nbd7 7.g4 e5 8.Bb2 e4 9.h4 Re8 10.Bh3 Nf8 11.e3? (11.g5 Nh5 12.fe4 Ng3-/+ (worse 12...de4 13.Bc8 Qc8 14.e3=+)) 11...c6 (better 11...ef3 12.Qf3 Ng6-+) 12.f4-/+ Kh8 (12...Qd7 13.f5 h5 14.gh5-/+) 13.h5? (13.g5 N6d7=) 13...Rb8 (13...h6 14.Nc3-+) 14.Nd2 (14.g5 Ng8-/+) 14...Bd7 (14...h6!?-+) 15.f5 h6 16.Qe2 (16.Ne2 N8h7-/+) 16...N6h7 (16...b6 17.Bc3-/+) 17.0-0-0 (17.Bg2 Qc7-/+) 17...Ng5 18.Bg2 Nfh7 19.Nh3 Nh3 20.Bh3 Bg5 (20...a5 21.Bc3 b6 22.Nb3-/+) 21.Rhf1 (21.Nb3 Qc7-/+) 21...Nf6 (21...a5 22.Bc3 ab4 23.ab4-/+) 22.a4? (better 22.Nb3!?-/+) 22…b6 (22...b6 23.Bc3 a5 24.ba5 bc5 25.dc5 Qe7-+) 0-1. Paul593 - Johannes Kohler (2275) , ChessWorld.net, 2009.

3.d3 Bb4-/+ 4.Bd2 Bc5 5.a3? (better is 5.Nf3!?-/+) 5...Ng4-+ 6.e3 (6.Nh3 Nf2! 7.Nf2 Bf2 8.Kf2 Qf6 9.Bf4 Qa1 10.Bc7 Na6-+) 6...Qf6 (6...Nf2 7.Kf2 Qf6 8.Ke1 Qa1 9.Bc3-+) 7.Qg4 Qa1 8.Qd1 Ba3 9.Na3 Qa3 10.Be2 f5 (10...0-0 11.Nf3-+) 11.Nf3 Qe7 12.0-0 Nc6 13.d4 d5 (13...0-0 14.d5 ed5 15.cd5-+) 14.c5 0-0 15.Bb5 a6 16.Bc6 bc6 17.Ne5 Bb7 18.f4 (18.Qa4 Rfb8-+) 18...Rf6 19.Rf3 Rh6 20.Be1 (20.Qb3 Bc8-+) 20...a5 (20...Rb8!? 21.Qd3-+) 21.Qb3 Ba6 22.Nc6 Qe8 23.Na5 Be2 24.Rg3 Ra5?? (better is 24...Rb8 25.Qc2 Qh5-/+) 25.Ba5= Qh5? (25...Qa8 26.Qc2 Qa5 27.Qe2 Qa1 28.Kf2 Rh2=+) 26.Qb8+– Kf7 27.Qc7 Kf6 28.Qg7 1–0. Tricky Rabbitt – ian5300, ChessWorld.net, 2005.

3.e3 d5 4.Nf3 Bf5 5.d4 Nbd7 6.Qb3 e6 7.c5 Qc7 8.Nc3 e5 9.de5 Ne5 10.Ne5 Qe5 11.Bb2 Qc7 12.Be2 Be7 13.0-0 0-0 14.Rfe1 Ng4 15.g3 Bf6 16.Rad1 Rfe8 17.Bf3 Ne5 18.Bg2 Nd3 19.Rf1 Nb2 20.Qb2 Qe5 21.Rc1 h5 22.Qd2 h4 23.Ne2 h3 24.Bf3 g5 25.Nd4 Be4 26.Bg4 Kg7 27.f3 Bg6 28.Rce1 Rh8 29.Qf2 Bd3 30.f4 gf4 31.gf4 Qe7 32.Rd1 Be4 33.Bf3 Rag8 34.Kh1 Kf8 35.Rg1 Rg1 36.Rg1 Bd4 37.ed4 Bf3 38.Qf3 Qe4 39.Qe4 de4 40.Rg4 Rh5 41.Rg5 Rh4 42.Kg1 Rf4 43.d5 cd5 44.Rd5 Ke7 45.Rd4 f5 46.b5 Rf3 47.Ra4 e3 48.Ra3 e2 49.Rf3 e1Q 50.Rf1 Qe3 51.Rf2 Qc5 52.a4 Kf6 53.a5 Qb5 54.a6 Qa6 55.Rd2 Qc6 56.Kf1 Qg2 57.Rg2 hg2 58.Kg2 a5 59.Kf2 b5 60.Ke2 a4 61.Kd3 a3 62.Kc3 b4 63.Kb3 f4 64.h4 f3 65.h5 f2 0–1. Szewczak – Tsatsorin, 1996.

3.e3 Be7 4.c5 c6 (4...d6 5.d4=+) 5.Nf3 (5.d4 d6=) 5...b6 6.d4 bc5 (6...a5 7.Bd2=) 7.dc5 (7.bc5 Ba6=) 7...Ba6 (7...a5!? 8.Ba3 Na6 9.Ba6 Ba6=+) 8.Ba6+= Na6 9.Qa4 (9.a3 d6=) 9...Nc7 10.Ne5 Nb5 (10...a5 11.0-0=) 11.Qa6 Nd5 12.Nc6 (better is 12.a3 Bf6 13.Bb2=) 12...dc6+- 13.Qc6 Kf8 14.Qb5 Rb8?? (better is 14...Bf6-+) 15.Qd3 (15.Qe2 Nb4 16.0-0 Bc5 17.Rd1=) 15...Rb4 (15...Nb4!? 16.Qd8 Rd8=+) 16.0-0 (16.Nd2 Bc5 17.Ba3 Qf6+-) 16...Bf6= (16...Bc5? 17.Ba3+-) 17.Bd2 (17.a3 Rb8 18.Ra2+/-) 17...Ba1 (better is 17...Rb8 18.Na3 Ba1 19.Ra1 Nf4 20.Qd8 Rd8=+) 18.Bb4+/- Bf6 19.Ba3 (19.Bd2 Nc7 20.Qd8 Bd8+/-) 19...Be7 (19...Qc7 20.e4 Nf4 21.c6 Ke8 22.Qf3+/-) 20.c6 Ba3 21.Qa3 Kg8 22.Qa7 g6 23.Rd1 Kg7 24.Qd4 f6 25.Qa7 Kh6 26.Nc3 Qc7 27.Qc7 Nc7 28.a4 f5 29.Nb5 Rc8 30.Rd7 Nd5 31.c7 Ra8 32.Rd8 Nc7 33.Ra8 Na8 34.a5 Kg5 35.a6 e5 36.a7 f4 37.ef4 ef4 38.Nd6 h5 39.Ne4 Kf5 40.f3 g5 41.Nf2 g4 42.h4 gh3 43.gh3 Kg5 44.Kh2 Kh4 45.Nd3 Kg5 46.Kg2 Nb6 47.Ne5 Na8 48.Nf7 Kf6 49.Nh6 Kg6+= 50.Ng8 Kg7?? 51.Ne7+- Kf6 52.Nd5 Kg5 53.Nc3 Nb6 54.Ne2 h4 55.Kf1 Kf5 56.Ke1 Ke5 57.Kd2 Kd6 58.Nf4 Kc7 59.Ng6 Kb7 60.f4 Ka7 61.Ke3 Kb7 62.Kf3 Nd5 63.Nh4 Kc7 64.Ng6 Nf6 65.h4 Kd7 66.f5 Ke8 67.Kf4 Kf7 68.Ke5 Ng4 69.Kf4?? Nf6 70.Kg5 Nh7? 71.Kh6 Nf6 72.h5 Ne4 73.Nh4 Nf6? 74.Nf3 Ng8 75.Kh7 Nf6= 76.Kh6 Ng8 77.Kg5 Kg7 78.Ne5 Nf6 79.h6 Kh7 80.Nf7 Ne4 81.Kf4 Nf6 82.Kg5 Ne4 83.Kh5 Nf6 84.Kg5 Ne4 85.Kf4?? Nf6 86.Ke5 Ng8 87.Ke6 Nh6 88.Nh6 Kh6 89.f6 Kh7 90.f7 Kg7 91.Ke7 Kh6 1-0. ian5300 - Tricky Rabbitt, ChessWorld.net, 2005.

3.Nf3 Bb4-/+ 4.a3 Be7 5.g3 0-0 6.Bg2 d5 7.cd5 ed5 8.0-0 Re8 9.d4 c6 10.Nc3 Bf5 11.Ne5 Nbd7 12.Re1 (12.Bf4 Nh5-+) 12...Ne5 13.de5 Ng4 14.e4 Bc5 Black prepares the advance d4 (14...de4 15.Qd8 Rad8 16.Be4 Ne5 17.Bf4 Be4 18.Re4-+) 15.Be3? (better is 15.ef5 Bf2 16.Kh1 Be1 17.Qe1 Re5 18.Qd2-+) 15...d4 16.Bd4 (16.Bf4 dc3 17.ef5 Bf2 18.Kh1 Be1 19.Qg4 Bd2-+) 16...Bd4 (16...Qd4!? 17.Qd4 Bd4 18.Re2-+) 17.ef5 Bf2 (17...Bc3?! 18.Qg4 Ba1 19.Rd1-+) 18.Kf1 Be1 19.Qe1 (19.Qd8 Rad8 20.Re1-+) 19...Qd3 20.Kg1 (20.Ne2 Re5 21.a4 Rae8-+) 20...Qd4 21.Kf1 Nh2 (21...Nh2 22.Ke2 Re5 23.Be4 Rae8-+) 0–1. Hess,Volker – Parmet,Daniel (1640), FICGS, 2008. (=1.c4 Nf6 2.b4 e6)

4.Qa4 Na6 5.ba5 (5.b5 Nc5 6.Qc2 a4+= 7.Ra2 e5+=) 5...Nc5 6.Qc2 c6 (6...e5 7.e3+= Qe7+=) 7.d4= Qa5 (7...Nce4 8.e3 Qa5 9.Nd2=) 8.Bd2 Qa4 9.Qa4 Na4 (worse is 9...Ra4 10.dc5 Rc4 11.e3 Rc5 12.Bd3+/–) 10.Nf3 Be7 (10...b6 11.Ra2=) 11.e3 Ne4 12.Bd3 (12.Ra2 d6=) 12...f5 (12...d5 13.c5=) 13.0-0 (13.c5 Nb2 14.Be2 d6=) 13...d6 14.Bc1 (14.Ra2 c5+=) 14...g5 (14...Bf6 15.Rd1=) 15.Ra2 (15.Nfd2 Nd2 16.Nd2 c5=) 15...Bd7 (15...c5 16.Nfd2 Nd2 17.Rd2=) 16.Nfd2 (16.Rc2 c5=) 16...d5 (16...Nd2 17.Rd2 e5 18.Rfd1=) 17.f3 (17.c5 Nd2 18.Rd2 e5+=) 17...Nf6 (17...Nd2 18.Bd2 dc4 19.Bc4+=) 18.c5 (18.Rc2 c5=) 18...Kf7 (18...e5 19.Rc2 Be6 20.Rd1=) 19.e4 Rhb8 20.ef5 (20.Bc2 Ke8+=) 20...ef5= 21.Re1 b6 (21...Re8 22.Nb3 f4 23.g3 Nc5 24.Re7 (24.dc5?? Bc5 25.Nc5 Re1 26.Kf2 Rc1 27.Nb7 Bh3-+; worse is 24.Nc5 Bc5 25.Rae2 Bd4 26.Kg2 Re2 27.Re2 g4-+) 24...Re7 25.dc5 fg3 26.hg3+=) 22.cb6 Rb6 23.Nf1 f4 24.Rae2 (24.h4 h6 25.Rae2 Ng8 26.hg5 hg5+=) 24...Bd6+= 25.Bc2 (25.Nfd2 c5 26.h4 cd4 (26...gh4?! 27.dc5 Nc5 28.Bc2-+) 27.hg5 Nc5-+) 25...c5-/+ 26.dc5 Bc5 27.Kh1 Bd6 28.h3 (better is 28.Ba4!? Ra4 29.Bb2-/+) 28...Rc8-+ 29.Ba4 Ba4 (29...Rb1!? 30.Bc2 Ra1 31.Rd1-+) 30.Bb2 Bc2 31.Bf6 Kf6 (31...Bb1?! 32.Bg5 Rg8 33.h4=) 32.Nfd2 Bd3 33.Re6 Kf7 0–1. Parmet,Daniel (1640) – Inving,Yugi, FICGS, 2008. (=1.c4 Nf6 2.b4 e6 3.a3 a5)

4.Bb2 ab4 5.ab4 Ra1 6.Ba1 Bb4 7.Qb3 (7.Bc3 Bc3 8.Nc3 e5-/+) 7...Na6 8.Nf3 0-0 9.e3 (9.Bd4 d6-+) 9...b6 (9...d6 10.Be2-/+) 10.Bd3 (10.Be2 d6-/+) 10...Nc5 11.Qc2 (11.Bf6 Nd3 12.Qd3 Qf6-/+) 11...Nd3 (11...Bb7 12.Bb2-+) 12.Qd3 Bb7 13.Qe2 (13.Ng5 g6-/+) 13...Qa8 (13...Qe7 14.Be5-+) 14.Bf6-/+ gf6 15.0-0 (15.Nh4 f5-/+) 15...Bf3 16.Qf3 (16.gf3 Kh8-/+) 16...Qf3 17.gf3 f5 (17...Ra8 18.d3-/+) 18.d4 (18.Kg2 Rd8-/+) 18...c6 (18...Ra8 19.Kg2-/+) 19.Rd1 (19.Kh1 b5 20.Rg1 Kh8-/+) 19...d5 (19...Ra8 20.Rd3-+) 20.cd5 cd5 21.Nd2 Rc8 22.f4 Rc2 23.Nf3-/+ Be7 24.Rb1 Bd8 25.Ne5 Bh4 26.Rf1 b5-+ 27.Nf3 Be7 28.Ne1 Rc1 29.Nd3 Rf1 30.Kf1-/+ Kf8 31.Nc1 Ke8 32.Ke2 Kd7 33.Kd3 Kc6 34.Nb3 b4 35.f3 Kb5 36.Kc2 Ka4 37.Nd2 Ka3 38.Nb3 Bd6 39.Nc5 h5 40.Nb7? Be7 41.Na5? f6 42.Nc6 Bd6 43.Nd8?? b3 44.Kb1 Bb4 45.Ne6 Bd2 46.Nc7 Be3 47.Nd5 Bd4 48.Ne7 Be3 49.Nf5 Bf4-+ 50.Ng7 Bh2 51.Nh5 Be5 52.f4 Bc3 53.f5 Be5 54.Ng7 Kb4 55.Ne6 Kc4 56.Kc1 Kd5 57.Ng7 Ke4 58.Kb1 ½–½. NN – NN, internet, 2006.

4.b5 c5 5.e3 b6 6.d4 cd4 7.ed4 d5 8.Nf3 Bb7 9.Nbd2 Nbd7 10.Bb2 Bd6 11.Rc1 Rc8 12.Qb3 0-0 13.Be2 Re8 14.0-0 Qe7 15.Rfe1 h6 (15...Bf4!? 16.Rc2 dc4 17.Bc4 Nd5=+) 16.Ne5= Red8 17.f4 Qf8 18.Bf3 dc4 19.Ndc4 Bf3 20.Qf3 Be5 21.fe5 Nd5 22.Nd6 Rc1 23.Rc1 Qe7 24.a4 Nf8 25.Ba3 Qd7 26.Rc6 Ng6 27.g3 Nh8 28.h4 Ng6 29.Kh2 Rf8 30.Ne4 (30.Nc4 Re8+=) 30...Rc8 31.Rc8 Qc8 32.Kh3 (32.Qf7 Kh7 33.Qf3 Qc4+=) 32...Kh7 (better 32...Qc2!?-/+) 33.h5 Nh8 34.Nd6 Qc3 35.Qe4?? (better 35.Qc3 Nc3 36.Ne8=) 35...Kg8-+ 36.Bc5 bc5 37.dc5 Qc5 38.Nc4 g6 (38...Qg1!? 39.Nd6-+) 39.Na5 gh5 40.Nc6 Ng6 41.Qd4 (41.Qd4 Qa3 42.Kg2-+). Minister007 (2340) - skakist1s (2300), Rated blitz game, lichess.org, 2020.

4.b5 c6 5.Bb2 d5 6.e3 Be7 7.a4 0-0 8.Nf3 Nbd7 9.Be2 Qc7 (9...dc4 10.bc6 bc6 11.Na3=) 10.0-0 (10.cd5 Nd5 11.0-0 e5=) 10...Rd8 (10...dc4 11.Bc4 e5 12.bc6 bc6 13.d3=) 11.d3 (11.cd5 Nd5 12.d4 cb5 13.Bb5 N7f6=) 11...Ne8 (11...dc4!? 12.dc4 e5+=) 12.cd5+= cd5 (12...ed5 13.Nbd2+=) 13.Nbd2 Bf6 (13...e5 14.Qb3 Nef6 15.Rac1+=) 14.d4 (14.Rc1 Qd6 15.Bf6 Nef6+=) 14...Nd6 (14...Be7 15.Ba3 Ba3 16.Ra3+=) 15.Qb3 (15.Rc1 Qb6+/–) 15...Be7 16.Rac1 Qb6 (16...Qb8 17.Rc2+/–) 17.Bd3 (17.Ba3 Qa7+/–) 17...Nf6 (17...Re8 18.Ne5 Qd8 19.Ba3+/–) 18.Ne5 (18.Ba3 Bd7+/–) 18...Bd7 19.Ba3 Rac8 (19...Rdc8 20.Ndf3+/–) 20.Ndf3 Bf8 (20...Rf8 21.Ng5 Qd8 22.Rc8 Qc8 23.Rc1+–) 21.g4 (21.Bc5 Qc7+/–) 21...h6 22.h4 (22.g5 Nfe4+/–) 22...Rc1 (better is 22...Nfe4+=) 23.Rc1+– Nfe4 24.Bc5 (24.Qc2 f6 25.Nd7 Rd7 26.Be4 Ne4 27.Bf8 Kf8 28.Qc8 Rd8+/–) 24...Qc7 25.Qb2 (25.b6 Qb8+=) 25...Nc5= 26.dc5 (26.Nd7? A) worse is 26...Qd7 27.dc5 (worse is 27.Rc5 Nc4 28.Rc4 dc4 29.Bc4 Rc8-/+) 27...Ne4 28.c6+=; B) 26...Rd7?! 27.dc5 Nc4 28.Bc4 dc4 29.Qe5=; C) 26...Nd3 27.Rc7 Nb2-+) 26...Nc8 (better is 26...Ne4!? 27.Qc2 Be8 28.Be4 de4 29.Qe4 Bc5+=) 27.b6+/– Qb8 28.Ng5?? (better is 28.Nd7 Rd7 29.Ne5+/–) 28...hg5-+ 29.hg5 Ne7 (29...Be8 30.Bb5-+) 30.g6 (30.Bb5 Nc6 31.Bc6 Bc6 32.Nc6 bc6-+) 30...fg6 (30...Ng6 31.Bg6 fg6 32.Ng6-+) 31.f4 Nc6 (31...Qc8 32.Qh2 Be8 33.Kg2+–) 32.Qh2 (better is 32.Nd7 Rd7 33.Bg6-+) 32...Ne5 33.fe5 Be8 (33...Ba4?? 34.Bg6 Bc5 35.Qh7 Kf8 36.Rf1 Ke7 37.Qg7) 34.Kg2 (34.Kg2 d4 35.c6 Bc6 36.Rc6 de3 37.Rc3-+). Lertora,Lucio – Smith,Jonathan D, ICCF World Cup8–9 prel–104, 1990. (=1.c4 Nf6 2.b4 e6 3.a3 a5)

4.b5 c6 5.e3 d5 6.d4 Be7 7.Nc3 0-0 8.c5 b6 9.cb6 Qb6 10.bc6 Nc6 11.f4 Ba6 12.Ba6 Qa6 13.Nge2 Rfc8 14.Bd2 g6 15.0-0 Bf8 16.h3 a4 17.g4 Nh5 18.Ne4 de4 19.Kg2 Ne7 20.Nc3 f5 21.Rf2 Rc3 (better 21...Qd3 22.Qe1 fg4 23.hg4 Nd5 24.Nd5 ed5-/+) 22.Bc3+= Nd5 23.Bd2 Rc8 24.Qe2 Qe2 25.Re2 Rc2 26.Kf2 Be7 27.Ke1 (27.Rc1 Rb2 28.Rc8 Kf7+/-) 27...Rb2 28.Kd1 (28.Bc1!? Bh4 29.Kf1+=) 28...Rb3= The isolani on a3 becomes a target 29.Kc2 Ba3 30.Rb1 Rd3 31.Rb8 Bf8 32.Ra8 a3 33.Bc1 Nb4 34.Kb1 Rb3 35.Ka1 a2?? (35...Nd5 36.Re1 Rc3 37.g5=) 36.Raa2?? (better 36.Rb2 Rb2 37.Bb2 (37.Kb2?! fg4 38.hg4 Nf4)). Minister007 (2445) - ljdr (2515), Rated blitz game, lichess.org, 2020.

4.b5 c6 5.e3 d5 6.d4 Be7 7.f4 0-0 8.Nf3 Nbd7 9.c5 b6 10.bc6 Nb8 11.cb6 Qb6 12.Nc3 Nc6 13.Rb1 Qd8 14.Nb5 Ne4 15.Bd3 Ba6 16.Be4 de4 17.Ne5 Ne5 18.de5 Qb6 19.a4 (19.Qd7!?-/+) 19...Rfd8 20.Qe2 Bb4 21.Kf2 Rab8 22.Bb2?? (better 22.Rd1-/+) 22...Rd2-+ 23.Bd4 (23.Qd2 Bd2 24.Bd4 Qc6-+ (24...Bb5 25.Bb6 Bd3 26.Rbd1+/-)) 23...Re2 (23...Bb5 24.Qd2 Bd2 25.Bb6+/-) 24.Ke2 Bb5 25.ab5 Qb5 26.Kf2 Rc8 27.Rhc1 Rc1 28.Rc1 h6 29.g3 (29.Rc8 Kh7 30.Rc2 Qd3-+) 29...a4 30.g4 (30.Rc8 Kh7 31.Rc2 Qd3-+) 30...a3 (30...Qd3 31.Rf1-+) 31.h4 (31.g5 hg5 32.fg5 Qd3-+) 31...h5! 32.gh5 Qd3 33.Rc8 Kh7 34.Rc7 Qd2 35.Kg3 Qe1 36.Kh3 Qf1 (36...Qh1 37.Kg3 Be1 38.Kg4 Qh4) 37.Kh2 Be1 (37...Be1 38.Rc2 Bf2 39.Rf2 Qf2 40.Kh3 a2-+) 0-1. Minister007 (2385) - almasssss (2395), Rated blitz game, lichess.org, 2020.

4.b5 e5 5.Bb2=.

4.b5 Be7 5.Nc3 d5 6.d3 (6.d4 0-0=) 6...0-0 (6...Nbd7 7.Nf3=) 7.Nf3 Nbd7 (7...d4 8.Ne4=) 8.e4= dc4 (8...Bd6 9.Bg5=) 9.dc4 b6 (9...e5 10.Be2=) 10.Qc2 (10.Be2 Bb7 11.Qc2 Nc5=) 10...Bb7 11.Be2 Nc5 (11...Ra7 12.0-0=) 12.e5 Nfe4 (12...Nfd7 13.0-0=) 13.0-0 Nc3 14.Qc3 Qe8 (14...c6 15.Rd1 Qc7 16.Bf4=) 15.Bf4 Ne4 16.Qb2 (16.Qc2 h6=) 16...Rd8 17.Rad1 Bc5 18.Nd4 Qe7 19.f3 (19.Bf3 f6=) 19...Ng5 20.Be3 (20.Kh1 Ba3 21.Bg5 Bb2 22.Be7 Bd4+=) 20...f6 21.f4 (21.ef6 Qf6 22.Kh1 Nf7=) 21...fe5=+ (< 21...Ba3 22.ef6 gf6 23.Qa1=) 22.fe5 Ba3 (22...Rf1 23.Kf1 Nf7 24.Bf4-/+) 23.Rf8 Rf8 24.Qc2 Bc5 25.Bg4 Bd4 (25...Rd8 26.Qf2-/+) 26.Bd4=+ Rf4 (26...Be4 27.Qc1=+) 27.Be2 (27.h3 Ne4=+) 27...Qa3=+ 28.Qc3 (28.Bf2 Nh3 29.gh3 Qh3 30.Rd8 Kf7-+) 28...Qa2 (28...Qc3 29.Bc3 Ne4 30.Bd4=+) 29.Qb2 Qb2 30.Bb2 ½–½. MrkT – elsquare, Internet, 2005.

4.b5 Be7 5.d4 d5 6.c5 0-0 7.Nc3 c6 8.b6 Nbd7 9.f4 Nc5 10.dc5 Bc5 11.Nf3 Bb6 12.e3 Qd6 13.a4 Bc5 14.Be2 Bb4 15.Bd2 c5 16.0-0 b6 17.Ne5 Nd7 (better 17...Ba6=) 18.Nb5+- Qe7 19.Nc6 Qf6 20.Bb4 ab4 21.Nc7 Bb7 22.Na8 Ra8 (22...Bc6!? 23.Bb5 Rc8 24.Bc6 Rc6+/-) 23.Bb5+- Rc8 (23...Bc6 24.Bc6 Rd8 25.Rb1+/-) 24.Na7 (better 24.Nb4!? Rc7 25.Rc1+-) 24...Rd8 25.a5 c4? (better 25...ba5 26.Qa4 Qe7+/-) 26.a6 Ba8 27.Qd4 Qd4 28.ed4 b3 29.Rf3 (better 29.Nc6 Re8 30.Ne5 Ne5 31.Be8+- (31.de5?! Rc8+-; 31.fe5?! Rc8+-)) 29...Nf6 30.Nc6 Rd6 31.Ne5 h6 32.a7 Ne4 33.Re3 Nd2 34.Kf2 (better 34.Rd1 b2 35.Be8+-) 34...b2+= 35.Rd1 b1Q 36.Rb1 Nb1 37.Ke2 (37.Be8 b5 38.Bf7 Kf8=) 37...c3= 38.Kd3? (better 38.Kd1!? f6 39.Nf3=) 38...f6-/+ 39.Nd7? (39.Bc6 fe5 (39...Bc6?? 40.Nc6 Kh7 41.a8Q Rc6 42.Qc6+-; 39...Rc6? 40.Nc6 e5 41.fe5 Bc6 42.ef6+-) 40.Ba8 e4 (40...ef4?? 41.Re6 Rd7 42.Bb7+-) 41.Kc2 Na3 42.Kb3 Nb5 43.Bd5 Na7 44.Be4 Rd4-/+) 39...Kf7?? (better 39...Na3 40.f5 c2-+) 40.Kc2?? (better 40.f5 Na3 41.Ba4-/+) 40...Na3-+ 41.Kc3 (41.Kd3 Nb5 42.Nb8 Bb7-+) 41...Nb5 42.Kb4 Nd4 43.Nb8 (43.Nb6 Rb6 44.Kc5 Nc2 45.Kb6 Ne3-+) 43...Ke7 (better 43...Nc2 44.Kb5 Ne3-+) 44.Rc3 e5 (better 44...Kd8!? 45.Rg3 Nf5 46.Rh3-+) 45.Rc7 Ke6 46.Rg7 Nc2 47.Kc3 (47.Kb3 Ne1 48.Na6-+) 47...Rc6 (better 47...Ne3-+) 48.Kd2?? (48.Nc6 Ne3 49.Nb4 d4 50.Kd2+/-) 48…Nd4 (48...Nd4 49.Nc6 Nc6= (49...Bc6? 50.Rc7 Ba8 51.Rc8+-)). Minister007 (2335) - Ranchenko (2360), Rated blitz game, lichess.org, 2021.

5.Bb2 Bb7 6.f4 d5 7.Nf3 dc4 8.e3 Qd5 9.Qc2 (9.Nc3!? Qh5 10.Bc4+=) 9...Qb5=+ 10.Bc4 Qh5 11.0-0 Nbd7 12.Nc3 Be7 13.Nb5 Rc8 14.Ne5? (14.Na7 Rd8=+) 14...0-0 (better 14...Ne5 15.fe5 Ng4-/+) 15.Qb3? (better 15.Na7 Ra8 16.Nac6-/+) 15...Ne5-+ 16.Be5 Nd5 (better 16...Qg6 17.Rf2 Ng4-+) 17.Rf2 c6 (17...Bh4 18.Re2-/+) 18.Be2 (better 18.Na7!? a4 19.Qb2=) 18...Qg6 19.Nd4 Bc5 (19...c5 20.f5 Qh6 21.Nb5-/+) 20.f5 ef5 (better 20...Qg5!?=+) 21.Nf5+= f6 (21...a4!? 22.Qc4 Rfe8 23.Bg7 Ra8+=) 22.Bd6 Bd6 23.Nd6 Rc7 24.e4 Rd8 25.Nb7 (25.ed5!? Rd6 26.dc6 Kh8 27.cb7 Rb7+-) 25...Rb7 26.ed5 Qf7 27.Rc1 b5 (27...cd5 28.Rc6 Qe8+-) 28.Rc6 Qd5 (28...b4 29.Bc4 Qd7 30.d6 Kh8 31.Rc7 Rc7 32.dc7 Qc7 33.ab4+-) 29.Qd5 Rd5 30.Bf3 Rd8 31.Rf6! Rc7 (31...gf6 32.Bb7 Discovered attack) 32.Rb6 (better 32.Bd5! Rf7 33.Rf7 g6 34.Rd7 Kh8 35.Ra7 Rc8 36.Rff7 Rc1 37.Kf2 Rf1 38.Kf1 b4 39.Rh7) 32...b4 33.ab4 ab4 34.Rb4 (34.Bd5! Kh8 35.Rb4 g6+-) 34...Rc1 35.Rf1 Rf1 36.Kf1 Rd2 37.Rb7 h6 38.h3 g5 39.Kg1 Ra2 (39...Kf8 40.Kh2+-) 40.Kh2 (better 40.Bd5 Kf8 41.Ba2+-) 40...Rd2 41.Kg3 Kf8 42.Kg4 Rd4 (42...Rd6 43.Kh5+-) 43.Kh5 Rh4 44.Kg6 Ke8 45.Bg4 Kd8 46.Rg7 Ke8 47.Kf6 Kf8 (47...Kd8 48.Rd7 Ke8 49.Rh7+-) 48.Rh7 (48.Rc7 Kg8 49.Rc8 Kh7 50.Bf5) 48...Ke8 (48...Kg8 49.Rd7 Rg4 50.hg4 h5 51.gh5 g4 52.g3 Kh8 53.Kg6 Kg8 54.Rd8) 49.Ke6 (49.Rh8) 49...Kd8+- 50.Kd6 (50.g3 Rg4 51.hg4 Kc8 52.Kd6 Kb8 53.Kc6 h5 54.gh5 g4 55.Rh8 Ka7 56.h6 Ka6 57.Ra8) 50...Ke8 51.Rh8 (51.g3 Rg4 52.hg4 Kf8 53.Rh6 Kg7 54.Rh2 Kf7 55.Rf2 Kg8 56.Ke7 Kg7 57.Rf7 Kg8 58.Rf5 Kg7 59.Rg5 Kh6 60.Kf6 Kh7 61.Kf7 Kh6 62.Rh5) 51...Kf7 52.Rh7 Kg6?? (52...Ke8 53.g3 Rg4 54.hg4 Kf8 55.Ke6 h5 56.Rh5 Kg7 57.Rg5 Kh8 58.Kf7 Kh7 59.Rh5) 53.Rd7 (better 53.Re7 h5 54.Re6 Kg7+-) 53...h5 54.Ke5 (better 54.Be6 Re4 55.Bf7 Kh6 56.Kc5+-) 54...hg4= 55.hg4 Rg4 56.Rd6 Kh5 57.Rd2 Rg3 58.Kf5 Kh4 59.Ke5 1-0. Minister007 (2340) - Rancic (2415), Rated blitz game, lichess.org, 2021.

5.Bb2 Bb7 6.f4 d6 7.Nf3= Be7 8.e3 Nbd7 9.d4 h6 10.g3 g5 11.Bg2 g4 12.Nh4 Qc8 13.Qe2 Rg8 14.Nc3 Nh5 15.Bb7 Qb7 16.Ng2 Qf3 17.Rf1 Qe2 18.Ke2 0-0-0 19.e4 f5 20.Rfd1 White plans d5 20...Ndf6 21.e5 de5 22.fe5 Nh7 23.d5 Ng5 24.Nf4 Nf4 25.gf4 Nf3 26.Rh1 Bc5 27.Rad1 h5 28.de6 Rd1 29.Kd1 Re8 30.Nd5 Re6 31.Ke2 h4 32.h3 (better 32.Ne3!? Be3 33.Ke3=) 32...Ng1-/+ 33.Rg1 Bg1 34.hg4 fg4 35.f5 Re8 36.f6 h3 37.f7 Rf8 (better 37...Rd8!? 38.e6 h2-+) 38.e6= Bc5 39.Be5 Ba3 40.Bc7 (40.Kf2 Kb7+=) 40...Kb7 (40...Rh8 41.Bh2 (41.Bb6?? h2 42.e7 Kd7 43.e8Q Re8 44.fe8R Ke8-+) 41...Kb7 42.e7 Be7 43.Ne7+=) 41.Bf4 (41.Be5 Bc5+=) 41...Bc5 42.Kf1 (better 42.Nb6 Kb6 43.Be3=) 42...a4-+ 43.Bh6?? (43.Nf6 a3 44.Ng4-+) 43...a3 (better 43...g3 44.Bf8 g2 (44...Bf8 45.e7 Be7 46.Ne7 Kc7 47.Nd5 Kd6 48.f8Q Ke5 49.Qf6 Ke4 50.Ke2 a3 51.Qf4) 45.Ke2 g1Q 46.Bc5 Qc5-+) 44.Bf8+- a2 45.e7?? (better 45.Bg7 g3 46.Ke2=) 45...a1Q-+ 46.Ke2 Qe5 47.Kd3 Qf5 48.Kd2 Qf7 49.e8Q Qe8 (49...Qf8?! 50.Qc6 Kb8 51.Qc7 Ka8 52.Qc6 Ka7 53.Qd7 Kb8 54.Qc7 Ka8 55.Qc6 Ka7 56.Qd7 Kb8 57.Qc7=) 50.Bc5 bc5 51.Nc3 g3 52.Ne4 Qe4 53.Kc3 Qd4 (53...g2 54.b6 g1Q 55.Kb3 Qgb1 56.Ka3 Qb4 57.Ka2 Qeb1) 54.Kb3 (54.Kc2 g2 55.Kb3 Qd3 56.Kb2 g1Q 57.b6 Qgb1) 54...Qd3 55.Ka4 (55.Kb2 g2 56.b6 g1Q 57.Ka2 Qgb1) 55...Qc4 (55...Qc3 56.b6 Qb4) 56.Ka5 (56.Ka3 g2 57.b6 g1Q 58.Kb2 Qgc1) 56…Qb4 0-1. Minister007 (2315) - shino_yu (2380), Rated blitz game, lichess.org, 2020.

5.Bb2 Bb7 6.f4 Nh5!? 7.Nh3 Qh4 8.Nf2 Qf4-/+.

5.Bb2 Be7 6.Nf3 0-0 7.d4 c6 8.Nc3 Bb7 9.e3 d5 10.Bd3 cb5 11.cb5 Nbd7 12.Rc1 Rc8 13.0-0 Ne8 14.Ne5 Nd6 15.f4 f5 16.Nd7 Qd7 17.Qe2 Rc7 18.Nb1 Rfc8 19.Rc7 Rc7 20.Nd2 Ne4 21.Nf3 Bd6 22.Ne5 Be5 23.fe5+= g6 24.Be4 de4 25.Rc1 Rc1 26.Bc1 Qc7 27.Bb2 Bd5 28.a4 Bb3=+ 29.g4 Qc2 30.Qc2 Bc2 31.gf5 gf5 32.Kf1 Ba4-+ 33.Ke1 Bb5 34.Kd2 Ba4 35.Bc3 Kf7 36.Ke2 Ke7 37.Kf2 Kd7 38.Kg3 Kc6 39.Kh4 Kd5 40.Kh5 Kc4 41.Be1 Kd3 42.Bf2 b5 43.Kh6 b4 44.Kh7 b3 45.Kg7 b2 46.h4 b1Q 47.h5 Qh1 (48.d5 ed5-+) 0–1. dannyboy238 – 2good2be#1, ChessWorld.net, 2004.

5.Bb2 g6 6.f4 Bg7 7.Nf3 Nh5 8.Bg7 Ng7 9.d4 Bb7 10.e3 0-0 11.Bd3 d6 12.0-0 Nf5 13.e4?? (better 13.Qe1+/-) 13...Ne3-/+ 14.Qe2 Nf1 15.Kf1 Nd7 16.Nc3 White prepares d5 16...Qf6 17.g3 e5 18.fe5 de5 19.d5 Nc5 20.Kg2 Bc8 21.h3 h6 22.Rf1 Qe7 23.Bc2 Bd7 24.Nd1 Rae8 25.Ne3 f5 (better 25...Rd8-/+) 26.g4? (better 26.ef5 gf5 27.Nh4=+) 26...fe4 27.Nd2 Rf1 (27...Rf4!? 28.Kg1 Ref8 29.Rd1-+) 28.Nef1 Nd3 29.Qe4? (better 29.Bd3 ed3 30.Qd3-/+) 29...Nf4-+ 30.Kg3 Qa3 31.Nf3 Rf8 (better 31...Qc1!? 32.Bd3 Qd1 33.N1d2-+) 32.Ne3 Qc1 33.Qe5 Qh1 34.h4?? (34.Qf4 Rf4 35.Kf4 g5 36.Kg3-+) 34...Qh3 (better 34...Nh5! 35.Kf2 Rf3 36.Ke2 Ng3 37.Kd2 Qh2 38.Kd3 Qe2 39.Kc3 Re3 40.Qe3 Qe3 41.Bd3 Ne4 42.Kc2 Qd2 43.Kb3 Nc5 44.Ka3 Qc3 45.Ka2 Nd3 46.d6 Qb2) 35.Kf2 Bg4 (better 35...Nd3! 36.Bd3 Qf3 37.Ke1 Re8 38.Qe8 Be8-+) 36.Ng4 Qg4 37.Be4 (37.Qe4 Qh3-+) 37...Nh3 (better 37...Qg2 38.Ke3 Qe2 39.Kd4 Qb2 40.Ke3 Ng2 41.Kd3 Rf3 42.Bf3 Qe5 43.Bg2 Qg3 44.Kd4 Qg2-+) 38.Ke3 Qf4 (better 38...Ng1 39.Qe6 Qe6 40.de6 Rf3 41.Bf3 Nf3 42.Ke4-+) 39.Qf4 Nf4 40.Ne5 Ng2 (40...a4 41.Ng6 a3 42.Nf8-+) 41.Kd4?? (better 41.Bg2 a4 42.Nc6=+ (42.Ng6? a3 43.d6 Re8 44.Kf4 a2-+)) 41...Nh4-+ 42.c5 (42.d6 cd6 43.Nd7 Nf5 44.Kd5 Rc8-+) 42...Nf5 43.Kc4 bc5 44.Kc5 (44.Kc5 Re8 45.Bf5 gf5 46.Nc4-+). Minister007 (2310) - peshkunets (2415), Rated blitz game, lichess.org, 2021.

5.d4 Bb7 6.Nf3 Be7 7.Nc3 0-0 8.e3 d5 9.cd5 Nd5 10.Nd5 Bd5 11.Bd3 c6? (better is 11...f5=) 12.e4+- cb5 13.ed5 Qd5 14.Qc2 f5 (14...Nc6 15.Bh7 Kh8 16.Be4+-) 15.Rb1 b4 16.Bc4 Qd6 17.ab4 ab4 (17...a4 18.0-0 Rf6 19.Bg5+-) 18.Qb3 Qc7 (18...Nc6 19.Be6 Kh8 20.Qd5+-) 19.Be6 Kh8 20.Ne5 g6 21.Ng6! hg6 22.Qh3 Kg7 23.Bh6 Kf6 24.Bd5 Qc3 (24...g5 25.Bf8 Bf8 26.Ba8+-) 25.Qc3 bc3 26.Rb6 (26...Nc6 27.Rc6 Bd6 28.Rd6 Ke7 29.Bf8 Rf8 30.Re6 Kd8 31.Rg6+-) 1-0. schaep1 - 2good2be1, ChessWorld.net, 2004.

5.cd5 ed5 6.d4=+.

5.cd5 Nd5 6.Qb3 Bc5 7.e3 0-0 8.Nc3 b6 9.g3 (9.d4!? Bd6 10.Nd5 ed5 11.Qc2=) 9...Nc3 10.Qc3 Bb7 11.f3 Nd7 12.Bg2 Rb8 13.Bb2 f6 (13...Nf6 14.Nh3=+) 14.Ne2= e5 15.0-0 Qe7 16.Rad1 Rfd8 17.d4 ed4 18.Nd4 Ne5 19.a4 Bb4 20.Qc2 Rd5 (20...Qf7 21.Kh1=) 21.Nc6 (21.Qb3!? Nf7 22.e4+=) 21...Bc6= 22.Qc6?? (better 22.bc6 Rd1 23.Rd1=) 22...Rbd8 (better 22...Nc6 23.Rd5 Qe3 24.Kh1 Ne7-+) 23.Rd5 (23.Rd5 Nc6 24.Rd8 Nd8 25.Kf2-+; worse 23.Qd5 Rd5 24.Rd5 Nc4-/+). claymil (2085) - rmack (1880), ChessWorld.net, 2019.

5.e3 b6 6.d4 Bd6=.

5.e3 b6 6.Nf3 Bb7 7.d4 Nbd7 8.Nbd2 Be7 9.Bb2 0-0 10.Be2 dc4 11.Nc4 Ne4 12.0-0 Ndf6 13.Rc1 Rc8 14.Nce5 Bd6 15.Nc6 Bc6 16.Rc6 Qe7 17.a4 (better 17.Qc2!? h6 18.Ra1+-) 17...Nd5+= 18.Qb3 Nb4 19.Rc4 h6 20.Rfc1 Rfd8 21.Ba3 Ng5 22.Ng5 Qg5 23.f4 Qf6 24.Bb4 ab4 25.g3 Qe7 26.R4c2 (26.e4!? Qd7 27.e5+-) 26...Ra8 27.Bf3 Ra7 28.Bc6 g6 29.Rf2 Kg7 30.e4 Qf8 31.f5 ef5? (better 31...gf5!? 32.ef5 e5+=) 32.ef5+- Qe7?? (better 32...g5+-) 33.f6 Qf6 34.Rf6 Kf6 35.Rf1 Kg7 (35...Bf4 36.Rf4 Kg7 37.Qf7 Kh8 38.Rh4 h5 39.Qg6 Rd5 40.Qh6 Kg8 41.Bd5) 1-0. Minister007 (2330) - Rancic (2430), Rated blitz game, lichess.org, 2021.

5.e3 b6 6.h3 Ne4 (better is 6...Bd6+=) 7.d3?? (7.Nf3 Bd6=) 7...Nc5?? (better is 7...Nf2 8.Kf2 Qf6 9.Nf3 Qa1-+) 8.Qc2 (8.d4 Ne4=) 8...Qf6 (8...dc4 9.Qc4 e5 10.Nd2=) 9.Bb2 Qf5 (9...Qg6 10.cd5 ed5 11.Nc3+=) 10.g4 (10.Nf3 f6+=) 10...Qg6= 11.Nd2 Bd6 12.Bg2?? (12.Ngf3 0-0=) 12...0-0 (better is 12...Nd3 13.Kf1 0-0-+) 13.e4 de4 14.Ne4 Nbd7?? (better is 14...Bb7+=) 15.Nd6+– Rb8? (15...Nd3 16.Kd2 Nb2 17.Ba8 Qg5 18.Ke2 Qe5 19.Ne4 Nc4+–) 16.Nc8 Rbc8 17.Rd1 (17.0-0-0 f5+–) 17...Rfe8 18.Bc6 Re7 (18...e5 19.Ne2+–) 19.Nf3 f5 (19...e5 20.Nh4 Qg5 21.Nf5+–) 20.Bd7 (better is 20.d4 Ne4 21.Bd7 Rd7+–) 20...Nd7 21.Rg1 (21.Qe2 fg4 22.Nh4 Qg5 23.hg4 Rf8+–) 21...Qh6 22.h4 fg4 23.Rg4 g6 (23...Qh5 24.Nh2+–) 24.Qc3 (better is 24.Qe2+–) 24...c5 (24...e5 25.Qd2 Qd2 26.Kd2 Rf8+–) 25.Qh8 Kf7 26.Qc8 (better is 26.Ng5 Qg5 27.Qh7 Kf8 28.Qh8 Kf7 29.Qg7 Ke8 30.Qg8 Nf8 31.Rg5 Rcc7+–) 26...Nf6 27.Ng5 Kg7 28.Qd8 (28.Qd8 Qg5 29.Qe7 Kh6 30.Rg5 Nh5 31.Qf8 Ng7 32.Bg7; 28.Bf6 Kf6 29.Rf4 Ke5 30.Qb8 Rc7 31.Qc7) 1–0. giraira – chess_icon, gameknot.com, 2016. (=1.c4 Nf6 2.b4 e6 3.a3 a5)

5.e3 dc4 6.Bc4 b6 7.f4 Bb7 8.Nf3 Nbd7 9.0-0 Be7 10.Nc3 0-0 11.Bb2 Nc5 12.Ne5 Nfd7 13.Nd7 Qd7 14.d4 Ne4 15.Ne4 Be4 16.Bd3 Qd5 17.a4 (17.Be4!? Qe4 18.Qf3+=) 17...Bg2=+ 18.Rf2 Be4 19.Rc1 Bd6 20.Bc4 (20.Be4!? Qe4 21.Qf3 Qf3 22.Rf3=+) 20...Qf5-/+ 21.Kf1 (21.Bf1 Rad8-/+) 21...Qh3 22.Ke2 Rad8 23.Qg1 g6 24.Qg5 f6 25.Qg3 Qf5 26.Rg1 Kf7 27.h4 (27.Qh4 h5-/+) 27...Rg8 28.Rh2 (28.Qg4 Qg4 29.Rg4 Bc2-/+) 28...Qh5 (28...Bc2 29.Qh3 Ba4 30.Qf5 gf5 31.Rc1-+) 29.Kd2 Bb4 30.Kc1 Qf5 31.Qh3 Qh3 32.Rh3 h5 33.Rhg3 Rd6 34.Be2 Rgd8 (34...c6 35.Bh5 cb5 36.ab5-+) 35.Rf1 (better 35.Bd1!? c6 36.Bc2 Bc2 37.Kc2 cb5 38.ab5-/+) 35...c6-+ 36.Rfg1 (36.Kd1-+) 36...cb5 37.ab5 Rc8 38.Kd1 Bc2 39.Kc1 Bd3 40.Kd1 Be2 41.Ke2 Rc2 42.Kf3 Rb2 43.Rg6 Ke7?? (better 43...Rd7 44.Rh6 Bf8 45.Rh7 Ke8 46.Rh5 a4-+) 44.Rg7= Kd8 45.Rh7? (better 45.Ra7 Rd7 46.Rg8 Bf8 47.Rf8 Ke7 48.Raa8=) 45...Rd7-+ 46.Rg8 (46.Rh5 Be7-+) 46...Kc7 47.Rh5 f5 48.Rh6 Re7 (48...Be1 49.Rgg6-+) 49.Rgg6 (49.Rhh8 Kd6-+) 49...Kd7 50.h5 a4 51.Rg8 (51.Rh8 a3 52.Rgg8 Kd6-+) 51...a3 52.Rb8 (52.Rhh8 Kd6 53.Rc8 a2 54.Rc6 Kd7-+) 52...a2 (52...Ba5 53.Rhh8 Kd6-+ (53...Rb5 54.Rb7 Kc6 55.Re7+/-)) 53.Rb6?? (53.Rhh8 Kd6 54.Rb6 Kd5 55.Ra8-+) 53...a1Q 54.Rb7 Kd6 (54...Kc8 55.Rb8 Kc7 56.b6 Kb8 57.Rh8 Kb7 58.Rb8 Kb8 59.Kg3 Rg7 60.Kf3 Qd1) 55.Re7 (55.Re6 Re6 56.Rb6 Kd5 57.e4 fe4 58.Kg4 Qd1 59.Kh4 Rh2 60.Kg5 Qh5) 55...Ke7 (55...Qd1 56.Kg3 Qg4) 56.Rh7 (56.Re6 Ke6 57.d5 Kd7 58.Kg3 Qg1 59.Kh4 Qg4) 56...Kd6 57.e4 (57.Rd7 Kd7 58.Kg3 Qg1 59.Kh4 Qg4) 57…Qf1 (57...Qf1 58.Ke3 Qe2; 57...Qa3) 0-1. Minister007 (2335) - Rancic (2420), Rated blitz game, lichess.org, 2021.

5.e3 c5 6.Bb2 Nbd7 7.f4 b6 8.Nf3 Bb7 9.a4 Qc7 10.Be2 Bd6 11.g3 e5 12.cd5 e4 13.Nh4 Bd5 14.Nc3 Bb7 15.Nf5 Bf8 16.Bc4 (16.g4 h6=) 16...g6 17.Nh4 Be7 (17...Bg7 18.0-0=+) 18.Ng2 Rf8 (18...0-0 19.0-0=) 19.Qb3 0-0-0 20.0-0 Ne8 21.Bf7 Nd6 22.Nd5 Bd5 23.Bd5 Bf6 24.Rac1 Bb2 25.Qb2 Nf6 26.Bc6 Nf5 27.Rc4 Qd6 28.Be4 Ne4 29.Re4 Qd2 30.Qd2 Rd2 31.g4 Nd6 32.Re7 Rf7 33.Rf7 Nf7 34.Ra1 Nd6= 35.Nh4 Re2 36.f5 gf5 37.Rd1 Kc7 38.g5?? Ra2-+ 39.Rd5 Ra4 40.Nf5 Rg4 41.Kh1 Ne4 42.h4 a4 43.Kh2 Nc3 44.Rd3 Nb5 45.Rd1 Nc3 46.Ra1 b5 47.Kh3 Re4 48.h5 Nd5 49.Ra3 c4 50.Kg3 Re5 51.Nd4 Kb6 52.Kg4 Kc5 53.Nc2 c3 54.g6 hg6 55.hg6 Kc4 56.g7 Ne7 57.Ra1 Re6 58.Na3 Kc5 59.Rh1 Rg6 60.Kf3 b4 61.Rh5 Kc6 62.Nb5 Rg7 63.Nd4 Kd6 64.Ra5 Rf7 65.Ke2 Nd5 66.Ra6-/+ Ke5?? 67.Re6# 1–0. Laco,Giuseppe (2150) – Liebscher,Helmar, 10. TCh–Euro sen, 2008.

5.e3 Bd6 6.Bb2 Nbd7 7.Nf3 0-0 8.Qc2 c6 9.a4 Re8 10.Ba3 (10.cd5 cd5 11.Be2 Nc5=) 10...c5 11.d3 b6 (11...d4 12.e4-/+) 12.Nbd2+= Bb7 13.0-0-0? (better is 13.Be2+=) 13...Qc7 14.h3 Rad8 15.Rg1 Re7 (15...e5 16.cd5 Nd5 17.Nc4-+) 16.g4-/+ dc4 (16...h6 17.g5 hg5 18.Rg5-/+) 17.dc4 Ne5 (17...h6 18.Bb2-/+) 18.Bg2 (better is 18.Ne5!? Be5 19.g5+=) 18...Nf3-/+ 19.Bf3 (19.Nf3 Ree8 20.Bb2-/+) 19...Bh2-+ 20.Rh1? (20.g5 Ne8 21.Ne4 Bg1 22.Rg1 Be4 23.Be4-+) 20...Rd2! 21.Qd2 (21.Kd2 Bf3 Remove defender; 21.Qd2 Bf3 Remove defender; 21.Rd2 Bf3 Remove defender) 21...Bf3 22.Qd8 (22.Bb2 Rd7 (worse is 22...Bd1 23.Bf6 gf6 24.Rd1-+) 23.Qc3 Bh1 24.Rh1 Ne8-+) 22...Re8 (22...Re8 23.Qc7 Bc7-+) 0–1. Logvinov,Kirill (1930) – Morev,Ivan (2285), Lipetsk Region–ch, 2010.

5.e3 Nbd7 6.d4 dc4 7.Bc4 Nb6 8.Be2 a4 9.Nc3 Bd6 10.f4 Kf8 11.Nf3 Nfd5 12.Qc2 Nc3 13.Qc3 Nd5 14.Qc2 Bd7 15.0-0 Qe8 16.Rb1 Ra5 17.Qd3 b6 18.g3 Ne7 19.e4 Nc8 20.Bd2 Ra8 21.e5 Be7 22.Be3 (22.Ng5 Kg8+/-) 22...f6 (22...Ra5 23.Rb2 Na7 24.Rfb1=) 23.Qc2 (23.d5 fe5 24.fe5 Ra5+/-) 23...Ra7 (23...Ba3 24.Ra1 Be7 25.Ra4 Ra4 26.Qa4 fe5 27.Ne5+=) 24.Qc3 f5 25.Bc4 h6 26.Rf2 Rh7 27.Rd2. Minister007 (2315) - AkibaZoombinstein (2320), Rated blitz game, lichess.org, 2022.

5.e3 Nbd7 6.d4 dc4 7.Bc4 Nb6 8.Be2 c5 9.bc6 bc6 10.Bf3 Nbd5 11.Qc2 Bd7 12.Ne2 Rc8 13.Nbc3 c5 14.Nd5 ed5 15.dc5 Bc5 16.Qd2 Be6 17.Bb2 0-0 18.0-0 Ne4 19.Be4 de4 20.Rfd1 Qg5 (20...Qd2 21.Rd2 Rfd8 22.Rd8 Rd8=+) 21.Nd4 (better 21.Ng3+=) 21...Bh3-/+ 22.g3 Bg4 23.Rdc1 Rfd8 24.Qa5 Qh5 25.h4 Bf3 (25...Rd5!?=) 26.Nf3 ef3 27.Bd4 (27.Rc4 Qf5 28.Kh2+-) 27...Qg4= 28.Kh2 (28.Bc5?? Qh3 29.Qd8 Rd8 30.e4 Qg2; 28.Rc5?? Qh3 29.Qd8 Rd8 30.Bg7 Qg2) 28...Be7 29.Qe5 Bf6 30.Rc8 Rc8 31.Qf4 Qf4 32.gf4 Bh4 33.e4 (better 33.Ra2!?+/-) 33...Rc4= 34.Rd1 Rc2 35.Kh3 Be7 (worse 35...Bf2 36.Bf2 f5 37.Be3+/-) 36.a4 Ra2 (36...Rc4+=) 37.Be5?? (better 37.Ra1 Ra1 38.Ba1+-) 37...Ra4=+ 38.Rd7 Kf8 39.Rb7?? (better 39.Bg7 Kg7 40.Re7=) 39...f6-+ 40.Rb8 Kf7 41.Bc7 Re4 42.Rb7 Ke6 43.Kg3 f5 44.Kf3 Kf7 45.Bd6 g6 46.Be7 Re7 47.Rb6. Minister007 (2300) - Ntrainer (2320), Rated blitz game, lichess.org, 2020.

5.e3 Nbd7 6.d4 c6 7.f4 Ne4 8.Nf3 Be7 9.Nbd2 f5 10.Ne4 fe4 11.Ne5 Ne5 12.de5 cb5 13.cd5 ed5 14.Bb5 Kf8 15.0-0 g6 16.Bb2 Kg7 (16...Be6 17.Qa4+=) 17.Qd4 (better 17.e6!? Bf6 18.Bf6 Qf6 19.Qd5+/-) 17...Be6+= 18.a4 Rc8 19.Rac1 b6 20.Rc6 Bc5 21.Qd2 Rc6 22.Bc6 Attacking the backward pawn on d5 22...Qc7 23.Bb5 (23.Bd5? Rd8 24.Bd4 Rd5-+) 23...Bb4 24.Qf2 Rf8 25.Bd4 Bc5 26.Rc1 Qe7 27.Bc5 bc5 28.Qc2 Rc8 29.Qc3 d4 (29...Qa7!?=) 30.h3?? (better 30.Qa5 d3 31.Bc4+=) 30…dc3-+ 0-1. Minister007 (2350) - chechenec_alan (2455), Rated blitz game, lichess.org, 2020.

5.e3 Nbd7 6.Nf3 Bd6 7.Bb2 0-0 8.Nc3 dc4 (8...Nb6!?=+) 9.Bc4= b6 10.h4 Bb7 11.h5 h6 ½–½. Lopatin,O (2125) – Stabolewski,A (2275), 12th OIBM, Bad Wiessee GER, 2008.

4.Bb2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.c4).

4.Nc3 Bb7 5.Bb2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 b6 4.c4 Bb7 5.Nc3).

4.Nc3 Bb7 5.Nf3 d5 6.cd5 ed5 7.d4 a6 8.g3 Bd6 ½–½. Benidze,Davit – Quparadze,Giga, Gebze TUR, 4th Open, 2013.

4.d3 Bb7 5.Nf3 Be7 6.e4 d6 7.Be2 0-0 8.0-0 c5 9.b5 Nbd7 10.Bb2 Ne5 (10...a6!?=) 11.Ne5+= de5 12.Be5 Bd6 13.Bd6 Qd6 14.Nd2 Qe5 (14...Rfd8!?+=) 15.Nf3+/– Qf4 16.g3 Qh6 17.Qc1 Qh5 18.Qf4 Ng4 (18...Rad8!?+/–) 19.Nh4+– g5 20.Bg4 Qh4 (20...gf4?? 21.Bh5 Rfd8 22.Be2+–) 21.gh4 (better is 21.Qf7! Kf7 22.gh4 gh4 23.Bh5 Ke7 24.f4+/–) 21...gf4+= 22.Kg2 Kh8 23.Kf3 (better is 23.Be2!?+=) 23...f5=+ 24.Bh3 fe4 (better is 24...Rad8 25.Kf4 fe4 26.Ke5 ed3=+) 25.de4+/– e5 26.Rad1 Rad8 27.a4 Rd4= 28.Rd4 cd4 29.Be6 Rf6 30.Bd5+= Bc8 31.Rg1 Rg6 32.Rg5 Rg5 33.hg5 Kg7 34.h4 h5 35.Ke2+/– f3 36.Kd3 Bh3 37.Kd2 Bf1 38.Ke1 Bd3 39.Kd2 Bb1 40.a5+/– d3?? 41.ab6+– ab6 42.c5! bc5 43.b6 c4 44.b7 c3 45.Kc3 Bc2 46.b8Q (46...d2 47.Qg8) 1–0. 2good2be#1 – DanielMartin, ChessWorld.net, 2004.

4.d4 a5 5.ba5 Ra5 6.Bd2=+.

4.d4 c5 5.dc5 (5.bc5 bc5 6.Nf3 cd4 7.Nd4 e5=) 5...bc5 6.b5 (6.Bd2 d5=) 6...d5 7.e3 (7.Bf4 Bd6 8.Bd6 Qd6= (8...dc4? 9.Nc3+–)) 7...a6 (7...Bd6 8.Nf3=+) 8.Nf3 (8.cd5 ed5 (< 8...Nd5 9.e4=) 9.Nf3 Bd6=+) 8...Nbd7 (8...ab5 9.cb5 Bd6 10.Be2=+) 9.Be2 (9.Bd3 dc4 10.Bc4 ab5-/+) 9...dc4 (better is 9...ab5 10.cb5 Qa5 11.Bd2 Qb6=) 10.Bc4 (better is 10.ba6!? Qa5 11.Qd2 Qa6 12.Bb2=) 10...ab5-/+ 11.Be2 Be7 12.0-0 b4 (12...Qa5 13.Bd2 b4 14.Bd3-/+) 13.Bb2 0-0 14.ab4 Ra1 15.Ba1 cb4 16.Nbd2 (16.Bd4 Bb7-/+) 16...Bb7 17.Nd4 (17.Nb3 Bd5-/+) 17...Nd5 (17...Qa8 18.Bf3-/+) 18.N2f3 (18.Bf3 Ne5-/+) 18...N7f6 (18...Nc3 19.Bc3 bc3 20.Qc2-/+) 19.Ne5 (19.Qb3 Bd6-/+) 19...Ne4 (19...Nc3 20.Bc3 bc3 21.Qc2-/+) 20.Bd3 Nec3 21.Qc2 h6 22.Nec6 Qc7 23.Ne7 Qe7 24.e4 (24.Bc3 Nc3 25.Rc1 e5-/+) 24...Nf4 25.Bc3 bc3 (25...Qg5 26.f3 bc3 27.Rd1-/+) 26.Kh1 (better is 26.Qc3 Qg5 27.g3=+) 26...Qd6 27.Qc3? (27.g3 Nd3 28.Qd3-+) 27...Nd3 (28.f3 Rd8 29.Qd3 Qd4 30.Qd4 Rd4-+) 0–1. Schmidbauer,Josef – Ulmer,Hanno, Niederbayern–chT, 2001.

4.Nf3 Bb7 5.Nc3 c5 6.b5 Be7 7.e3 0-0 8.Be2 Qc7 9.0-0 d5 10.cd5 Nd5 11.Bb2 Nd7 12.Rc1 Rfd8 13.d4 Rac8 14.dc5 (14.Qa4 Nc3 15.Rc3 Bd5=) 14...Nc5 15.Nd5 Bd5 (worse 15...ed5 16.Nd4+=) 16.Qd4 Bf6 17.Qb4 Bb2 18.Qb2 Qb7 19.Qb1 f5 20.Rfd1 Ne4 21.Rd3? (better 21.Qb2=) 21...Rc1-+ 22.Qc1 Rc8 23.Qb2 Rc5 (23...Bc4!? 24.Rd4 Be2 25.Qe2 Rc1 26.Ne1 Qc7-+) 24.Nd2 h6 25.f3 Nd2 26.Rd2 Qc7 27.Bd3 Rc3 28.Rc2 Rc2 29.Qc2 (29.Bc2? Qc5 30.Kh1 Qe3-+) 29...Qe5 30.e4 fe4 31.Be4 (31.fe4!? Bb7 32.Qc4=) 31...Be4 32.Qe4 Qc5 (32...Qb5?! 33.Qe6 Kf8 34.Qd6 Kf7 35.Qc7 Kf6 36.Qa7 Qc5 37.Kf1 Qc4 38.Kf2 Qc5 39.Kg3 Qg5 40.Kh3 Qh5 41.Kg3 Qg5 42.Kf2 Qc5 43.Ke2 Qc2 44.Ke3 Qc3 45.Kf4 Qe5 46.Kg4 Qg5 47.Kh3 Qh5 48.Kg3 Qg5=) 33.Kf1 Qb5 34.Kf2 Qd5 35.Qd5? (better 35.Qa4 Qc5 36.Kg3-/+) 35...ed5-+ 36.Ke3 Kf7 37.Kd4 Ke6 38.g4 (38.a4-+) 38...g5 39.a4 (39.f4 gf4 40.Kd3-+) 39...a6 40.h3 0-1. Boghi,Victor Almeida (1720) - Rosa,Gabriel Redon, 5th Floripa Open, 2019. (=1.c4 Nf6 2.b4 e6 3.a3)

4.Nf3 Bb7 5.d3 Be7 6.Bb2 Bf3 7.gf3 d5 8.cd5 Qd5 9.Nc3 Qd8 10.Bg2 Nbd7 11.0-0 c5 12.bc5 Nc5 13.Ne4 Nce4 14.fe4 Rc8 15.Qd2 h6 16.Rfc1 0-0 17.Rc3 Rc3 18.Qc3 Qc8 19.Rc1 Qc3 20.Rc3 Bd6 21.e3 Nd7 22.Rc6 Bb8 23.d4 Rd8 24.e5 g6 25.f4 Kg7 26.Kf2 g5 27.d5+= Nc5 28.d6?? Nd3-/+ 29.Ke2 Nb2 30.Kd2 Na4 31.Be4 Nc5-+ 32.Bc2 Kf8 33.Kc3 Ke8 (34.Bd1 Ne4 35.Kd4 Nd6 36.ed6 Bd6-+) 0–1. 2good2be#1 – Freyser, ChessWorld.net, 2004.

4.Qb3 a6 5.Bb2 Nc6 6.b5 (6.bc5!? Bc5 7.Nf3=) 6...ab5=+ 7.cb5 Qb6 8.e3 Ne7 9.Nf3 Ned5 10.d4 Be7 11.Be2 0-0 12.0-0 d6 13.a4 Ra5 (13...Rd8 14.Nbd2+=) 14.Nc3 Nc3 (14...Rd8!?+=) 15.Bc3+/- Ra8 16.a5 Qd8 17.dc5 dc5 18.Bc4 Bd6 19.Nd2 b6 (19...Nd5!?+=) 20.a6+/- Ra7 21.Nf3 Re8 22.Ne5 Bd7 23.Rad1 Qb8 24.f4 Ne4 25.Be1 (better 25.Bb2+/-) 25...Be5= 26.fe5 Qe5 27.Rf3 Bc8 28.Bd3 f6 (28...Rd7 29.Qc2 Red8 30.Bh4=) 29.Be4 Qe4 30.Qd3?? (30.Rd6 c4 31.Qc3 e5=) 30...Qe5?? (better 30...Qd3 31.Rd3 Bd7-+) 31.Bc3 Qc7 32.Qd6 (32.Rh3 f5 33.Qc4=) 32...Kf7 (better 32...Qd7 33.Qd7 Bd7=+) 33.e4 (better 33.Qc7!? Rc7 34.Rd6+/-) 33…h6 0-1. moss42 (2010) - sam vimes (1905), ChessWorld.net, 2016.

4.Qb3 Qb6 5.b5 Nc6 6.Nf3 Na5 7.Qc2 a6 8.ba6 Qa6 9.e3 d6 10.Bb2 Nd7 11.d3 f6 12.Nc3 g5 13.Nb5 Qb6 14.Ng5 Ne5 15.Be5 de5 16.Ne4 Be7 17.Qa4 Kf7 18.Qc2 f5 19.Nec3 Bf6 20.Na4 Qc6 21.Rg1 e4 22.Rd1 Bd7 23.de4 Qe4 24.Nd6 Ke7 25.Ne4 fe4 26.Qd2 Rad8 27.Qa5 Rc8 28.Rd7 Kd7 29.Nb6 Ke7 30.Nc8 Rc8 31.Kd2 Rd8 32.Kc2 Rd6 33.Qc5 Kd7 34.Be2 Rc6 35.Rd1 Kc7 36.Qa5 Kb8 37.Rd8 Bd8 38.Qd8 Rc8 39.Qc8 Kc8 40.Bg4 Kd7 41.Kc3 Kd6 42.Kd4 1–0. Chairboy – ian5300, ChessWorld.net, 2005.

4.Qb3 Nc6=+ 5.b5 Nd4 6.Qd3 Ng4 7.Nf3 Qf6 8.Nc3 b6 (8...d5!?=+) 9.h3 (9.Qe4 Rb8+=) 9...Ne5= 10.Ne5 Qe5 11.Rb1 Bb7 12.e3 a6?? (12...Be7 13.Kd1 Nf3 14.Be2=) 13.Bb2?? (better is 13.f4 Qf5 14.ed4 Qf4 15.ba6 Ra6 16.d5+–) 13...Nf5 (13...Be7 14.ba6 Ra6 15.Nb5=) 14.Nd5 (14.ba6 Ra6 15.Nb5 Qb8+=) 14...Qd6= 15.Nf4 (better is 15.Qe4=) 15...g5?? (better is 15...ab5 16.cb5 Be7=+) 16.Bh8 (16.Nh5 Qd3 17.Nf6 Kd8 18.Bd3 Bg2=) 16...gf4 17.Qd6 Bd6 18.Ra1 f3 19.Rg1 Bh2 20.gf3?? Bg1-+ 21.Ke2 0-0-0 22.Bf6 Rg8 23.h4 ab5 24.Bh3 Nh4 25.Bh4-/+ Bh2 26.cb5 Be5 27.Rb1 Rg6 28.Bg4 f5-+ 29.Bh3 Rh6 30.Rg1 Rh4 31.Rg8 Kc7 32.Bf1 Bb2 33.f4 Bd5 34.a4 e5 35.Rf8 e4 36.Rf5 Bc4 37.d3 Bd3 38.Kd2 Bf1 39.Kc2 Bg7 40.Rg5 Bd3 41.Kd2 Bf6 42.Rf5 Bg7 43.Rg5 Bf6 44.Rg3?? Rh2-+ 45.f5 Rf2 46.Ke1 Rb2 47.Rh3 Bc3 48.Kd1 Rb1 0–1. melr11 – ian5300, ChessWorld.net, 2005.

4.Qb3 Be7 5.Nf3 0-0 6.g3 (6.bc5 Bc5 7.d4 Be7=) 6...b6 (6...Nc6 7.bc5 Bc5 8.Bg2=+) 7.Bg2 Bb7 8.0-0 Nc6 9.Bb2 (9.b5!? Nd4 10.Qe3=) 9...cb4-/+ 10.ab4 Bb4 11.d3 a5 12.Nbd2 d5 13.Bf6 gf6 14.cd5 Qd5 15.Qd5 ed5 16.Nb1 Ne5 17.Nd4 Rac8 (17...a4 18.Rc1-+) 18.Na3 Rc5 (18...Bc3 19.Nf5 Rfe8 20.Rab1-/+) 19.Nab5 Ba6 20.Rac1 Rfc8 21.Rc5 bc5 22.Nd6 cd4 23.Nc8 Bc8 24.Bd5 (24.f4 Nc6-+) 24...Be6 25.Be6 fe6 26.Ra1 Nc6 27.e3 e5 28.e4 Bc3 29.Ra4 Kf7 30.Kf1 Ke6 31.Ke2 Kd6 32.f4 Kc7 33.f5 Kb6 34.g4 Kb5 35.Ra2 h6 36.h4 Kb4 37.Kf3 Kb3 38.Rg2 a4 39.g5 hg5 40.h5? Nd8 41.h6 Nf7 42.h7 a3 43.Kg4 Bb2 44.Kh5 a2 45.Rg1 Nh8 46.Kh6 Kc2 47.Kg7 Bc1 48.Kh8 a1Q 49.Kg7 Qa7 50.Kg8 Qb8 51.Kg7 Qc7 52.Kg8 Qd8 53.Kg7 Kd3 54.Rc1?? Ke4 55.Rf1?? Qe7 ½–½. Freyser – 2good2be1, ChessWorld.net, 2004.

4.b5 a6 5.Qa4 b6 6.ba6 Ra6 7.Qb3 Nc6 8.d3 (8.Bb2 d5=+) 8...Nd4 9.Qc3 Be7 10.Nf3 (10.e3 Nf5=+) 10...Nf3 (10...Nd5 11.cd5 Nf3 12.gf3+–) 11.ef3 0-0 12.Be2 d5 13.cd5 (13.0-0!?-/+) 13...Nd5-+ 14.Qd2 Bf6 15.Bb2 Bb7 (better is 15...Nf4! 16.0-0 Bb2 17.Qb2 Qg5-+ (17...Nd3 18.Qc2 Nb4 19.Qb2=)) 16.d4-/+ Ra8 17.dc5 bc5 18.0-0 Ba6 19.Ba6 Ra6 20.Bf6 (20.Rd1 Rd6-/+) 20...Qf6-/+ (20...gf6?! 21.Rd1=; < 20...Nf6 21.Qe2 Qa8 22.Rc1=+) 21.Ra2 Rd8 22.Rd1 Rad6 23.g3?? (better is 23.Qa5!?-/+) 23...Qf3 (better is 23...Nb4 24.ab4 Rd2 25.Rad2 Rd2 26.Nd2 cb4-+) 24.a4?? (better is 24.Re1-+) 24...Nb4 (24...Nf4! 25.gf4 Qd1 26.Qd1 Rd1 27.Kg2 Rb1 28.a5-+) 25.Qd6 Qd1 (25...Rd6?! 26.Rd6 Kf8 27.Rad2-/+) 26.Qd1 Rd1 27.Kg2 Na2 28.a5 (28.Na3 Nc3 29.a5 Kf8-+) 0–1. Tricky Rabbitt – melr11, ChessWorld.net, 2005.

4.b5 b6 5.Bb2 Bb7 6.e3 Be7 7.Nf3 d5 8.d4 Qc7 9.Qb3 (9.cd5 ed5 10.dc5 bc5= (worse 10...Bc5 11.Bf6 gf6 12.Bd3+/-)) 9...Nbd7 10.Be2 Rc8 11.Nbd2 0-0 12.a4 (12.Rc1 cd4 13.Bd4 Rfd8=+) 12...dc4 13.Bc4 Bf3 14.gf3 Rfd8 15.Rg1 (15.Rc1!?=+) 15...Qh2 16.Rg3 (16.Ke2 cd4 17.Bd4 Nc5-/+) 16...Nh5-+ 17.Rg4 (17.Nf1 Qh1 18.Be6 Ng3 19.Bf7 Kh8 20.fg3 Qf3 21.Qd5-+) 17...Bh4 18.Ne4 Ndf6 19.Nf6 Nf6 (19...Bf6?! 20.dc5 Rc5 21.Rd1 Qh1 22.Bf1 Qf3 23.Rd8 Bd8 24.Rc4-+) 20.Rh4 Qh4 21.Rd1 cd4 22.Bd4 Nd5 23.Ke2 (23.Bf1 Qh1-+) 23...Qg5 (23...Rc4!? 24.Qc4 e5 25.Qc6 ed4 26.Rd4-+) 24.Bb2 h5 25.Bc1 h4 26.e4 (26.Rh1 Qe5 27.Rh4 Nc3 28.Kf1 Qf6-+) 26...Nf4 27.Bf4 Qf4 28.Bd3 h3 29.Rh1 h2 30.Qb2 (30.Bc4 Rd2 31.Ke1 Qd6-+) 30...Qd6 (30...Rd3 31.Rd1 Qf3 32.Ke1 h1Q) 31.Qb3 (31.Bb1 Rc5 32.Rf1 Rg5-+) 31...Rc5 32.Ke3 (32.Qb1 Rc3 33.e5 Qe5 34.Be4 Qc5 35.Bh7 Kf8-+) 32...Rdc8 (better 32...Qd4 33.Ke2 Rc3 34.Qb1 Rd3 35.Kf1-+) 33.Qb1 (33.Qb4 g5-+) 33...Rc3 34.Rf1 (34.Ke2 Qf4 35.Rh2 Qh2 36.Qb2-+) 34...Qc5 35.Kd2 h1Q! 36.Rh1 (36.Rh1 Qf2 Double attack (36...Qf2 Deflection)) 36...Qf2 37.Be2 (37.Kd1 Qe3 38.Bc4 R8c4 39.Rh8 Kh8 40.a5 Rc1 41.Qc1 Rc1) 37…Qe3 (37...Qe3 38.Ke1 Rc1 39.Qc1 Rc1) 0-1. moss42 (1890) - rafflibit (2025), ChessWorld.net, 2014.

4.b5 b6 5.d3 d5 6.Nd2 Bb7 7.Ngf3 Nbd7 (7...Bd6 8.d4=+) 8.e3 (8.cd5 ed5 9.e3 Bd6=+) 8...Bd6 9.g3 (9.Be2 a6=) 9...0-0 10.Bg2 dc4 (10...Ne5 11.Ne5 Be5 12.Rb1-/+) 11.Nc4 Ne5 12.0-0 Nc4 13.dc4 Qe7 14.Bb2 Rad8 (14...Rfd8 15.Qe2=+) 15.Qe2 Rd7 16.h4 (16.Rad1 Rfd8=+) 16...Rfd8=+ 17.Bh3 (17.Rfd1 Be4=+) 17...Bc7 (17...a6 18.ba6 Ba6 19.Bg2-/+) 18.Rad1=+ Be4 19.Rfe1 (better is 19.Rd7!? Rd7 20.Bg2=+) 19...Bd3-+ 20.Rd3 (20.Qd2 Bc4 21.Bf6 gf6-+ (21...Qf6?! 22.Qd7 Rd7 23.Rd7=+)) 20...Rd3 21.Nd4 R3d4 (21...cd4?! 22.Qd3 de3 23.Qe3=) 22.ed4 cd4 23.Qd3 Qc5 24.f4 e5 25.fe5 Be5 26.g4 (26.Bg2 Qc7 27.Rf1 Bg3 28.Bd4 Qd6-+) 26...Bc7 (26...Re8!?-/+) 27.g5=+ Qd6 28.Bg2 (28.Re2 Nh5 29.Bf5 Qg3 30.Qg3 Ng3-+) 28...Nh5 (28...Qh2 29.Kf1 Ng4 30.Qd4 Qf4 31.Qf4 Bf4+=) 29.Qd4?? (better is 29.Qh3!?-/+) 29...Qh2-+ (29...Qd4 30.Bd4 Nf4 31.Re4+/–) 30.Kf1 Kf8 31.Qc3 Bd6 (32.c5 bc5-/+ (< 32...Bc5 33.Qc5 bc5 34.Be5-+)) 0–1. Moeller,P – Fritz,Harry, corr sok, 1995.

4.b5 b6 5.Nf3 d5=.

4.bc5= Qa5 5.Bb2=.

5.Bb2 b6 6.g3 a6 7.a4 d4 8.Bg2 Ra7 9.d3 Be7 10.Na3 0-0 11.Qb3 e5 12.0-0-0 (12.Nf3!?+=) 12...Ng4-/+ 13.Rf1 f5 14.h3 Nf6 15.Nf3 Bd6 16.Nd2 Re7 17.Nc2 Qc7 18.e4 de3 19.Ne3 Be6 20.Rd1 ab5 21.ab5 Nbd7 22.Nf3 f4 23.gf4 ef4 24.Nc2 Ne5 25.Rde1 Bf5 26.Rd1 Nf3 27.Bf6 Rf6 (27...gf6?! 28.Bf3 Kh8 29.d4=) 28.Bf3 Be5 29.h4 Rd6 30.Bd5 Kh8 31.h5 Qd8 32.f3 Qf8 33.Rh2 Bf6 34.Re1 Re1 35.Ne1 Qe8 36.Kd1 Rd8 37.Qa3 Qd7 38.Qa6 Qc7 39.Re2 Bc3 40.Kc2 Ba5 41.Ng2 Qd6 42.Nh4 Qf6 43.Nf5 Qc3 (43...Qf5?! 44.Qb7 Qf6 45.Qe7 Qc3 46.Kb1 Qb3 47.Kc1 Qa3 48.Kb1 Qb3 49.Kc1 Qc3 50.Kb1 Qb3=) 44.Kb1 Qd3 45.Rc2 Qf5 46.h6 gh6 47.Qb7 Qg6 48.Be4 Qg7 49.Qg7 Kg7 50.Rg2 Kf6 51.Rh2 Kg7 52.Rg2 Kf6 53.Rh2 Kg7 (53...Rd1 54.Kc2 Rd4 55.Kb3-/+) 54.Rg2 Kf7 55.Bh7 Rh8 56.Bg6 Ke7 57.Bh5 Bc3 58.Kc2 Bf6 59.Re2 Kd6 60.Bg4 Be5 61.Rh2 Ke7 62.Rh5 Kd6 63.Kd3 ½–½. Laco,Giuseppe (2080) – Chernikov,O1 (2435), TCh–Eur Seniors, Dresden GER, 2010. (=1.c4 Nf6 2.b4 e6 3.a3 c5)

5.d3 dc4 6.f3 (6.dc4!? Qd1 7.Kd1-/+) 6...Qa5 7.Bd2 Qb5 8.Nc3 Qa6 9.dc4 Qc4 10.e4 Qd4 11.Bb5 Nbd7 12.Nge2 Qd6 13.0-0 (13.Qa4 Qb8-/+) 13...a6-+ 14.Bd7 Bd7 (< 14...Kd7 15.e5 Qd3 16.ef6 gf6 17.Ne4+/-; 14...Nd7?! 15.Qc2-+; 14...Qd7?! 15.Qc2-+) 15.Bg5 Qd1 16.Rfd1 Ng8 17.Rab1 (better is 17.a4-+) 17...h6?? (17...b5 18.Kf2-+) 18.Be3? (better is 18.Rb7 Bc6 19.Rc7 hg5 20.Rc6=+) 18...b5-+ 19.e5 Bc6 20.Ng3 c4 21.Nce4?! Ba3 22.Nd6 Kf8 23.Nge4 Ne7 24.Bc5 c3 25.Ba3 c2 26.Nc5 a5 27.Rdc1 cb1Q 28.Rb1 b4 29.Bb2 a4 30.f4 a3 31.Ba1 Nd5 32.f5 ef5 33.Nf5 a2 34.Rc1 Kg8 35.e6 fe6 36.Ng7 Nc3! 37.Nge6 Ne2 38.Kf2 Nc1 39.Ke1 Kf7 40.Kd1 Rhc8 41.Kc1 Bd5 42.Kd2 Be6 43.Nd3 Rd8 44.Ke3 Ra3 (45.Ke4 Rdd3-+) 0-1. Mengs - tonycally, ChessWorld.net, 2004.

5.e3 b6 6.Nf3 Bb7 7.Bb2 Bd6 8.d3 Qc7 9.Bf6 gf6 10.g3 Nd7 11.Bg2 0-0-0 12.Qd2 (better is 12.cd5!? Bd5 13.Nc3+=) 12...Ne5 13.a4?? (better is 13.cd5 Bd5 14.e4 Nf3 15.Bf3+=) 13...dc4-+ 14.Qd1 cd3 (14...Bf3 15.Bf3 Nd3 16.Ke2-+) 15.Nbd2 c4 16.0-0 c3 17.Qb3 (17.Ne5 Bg2 (worse is 17...fe5 18.Ne4-+; 17...cd2?! 18.Bb7 Kb7 19.Qf3 Kc8 20.Nc6=) 18.Kg2 Be5-+ (18...fe5?! 19.Ne4-+; 18...cd2?! 19.Nc6=)) 17...Bd5 18.Qb1 Qb7 19.Ne5? Bg2 20.Nf7 Bf1 21.Nd6 Rd6 22.Nf1 Qd5 23.Qb4 Qc5 24.Qc5 bc5 25.e4 d2 26.Ne3 c2! 27.Nc2 d1Q 28.Rd1 Rd1 29.Kg2 Rhd8 30.Ne3 R8d4 31.f3 c4 32.Kh3 c3 33.a5 R4d3 34.Nc2 R1d2 35.Nb4 c2 (35...c2 36.Nc2 Rc2-+) 0-1. Pachurka,Roland - Jacobsen,Uwe (1845), Schleswig Holstein-ch cand, 2005.

5.e3 d4 6.Bb2 e5 7.f4 ef4 8.Nf3? (better 8.ed4 cd4 9.Qe2 Be7 10.Qd3-/+) 8...fe3-+ 9.de3 de3 (9...Qe7 10.Qe2 de3 11.Bf6 Qf6 12.Qe3 Be6 13.Nc3-/+) 10.Bd3 (10.Qd8!? Kd8 11.Nc3-/+) 10...Bd6-+ 11.0-0 0-0 12.Nc3 Ng4 (12...Re8 13.Qc2-/+) 13.Ne4 Bf4 14.Qc2 f5 15.Rad1? (better 15.Nc3 e2! 16.Ne2 (16.Qe2? Re8 17.Qc2 Ne3-+) 16...Be3 17.Kh1 Nf2 18.Rf2 Bf2 19.Nf4-/+) 15...fe4 16.Be4 Qe7 17.Bh7 Kh8 18.g3 (18.Bd3-+) 18...Bh6 (better 18...e2 19.gf4 ed1R 20.Qd1 Qe3 21.Kh1 Kh7 22.Ng5 Kh6 23.Qd6 Rf6 24.Bf6 Qe2 (worse 24...gf6 25.Qf8 Kh5 26.Qf7 Kh4 27.Nf3 Qf3 28.Rf3 Nf2 29.Kg2 Bh3 30.Kf2 Kg4 31.Qf6 Nd7 32.Qg5) 25.Nf7 Kg6 26.Bd4 Kf7 27.Qd5 Be6 28.Qh5 g6 29.Qh7 Ke8 30.Qh8 Kd7 31.Qg7 Kc8 32.Qh8 Kc7 33.Be5 Ne5 34.Qe5 Qe5 35.fe5 Nd7-+) 19.Nh4= Rf2 20.Qd3?? (better 20.Be4 Qc7 21.Ng6 Kh7 22.Qd3 Rf1 23.Rf1+-) 20...Qf6?? (better 20...Qe8 21.Bg6 Qd7-+) 21.Bf6+- gf6 (21...e2 22.Rf2 ed1Q 23.Qd1 Bd7+-) 22.Ng6 (22.Qg6 Rf1 23.Kf1 Nh2 24.Kg1 Nf3 25.Nf3 Be6 26.Rd8 Bf8 27.Rf8 Bg8 28.Qg8) 22...Kh7 (22...Kg7 23.Qd5 Rf1 24.Kf1 Be6 25.Qe6 Kh7 26.Qf7 Bg7 27.Nf8 Kh8 28.Rd8 e2 29.Ke1 Nd7 30.Ne6 Rd8 31.Qg7) 23.Nf8 Kg7 24.Qh7 Kf8 25.Rd8 1-0. is_er_nog_hoop (2420) - Berturhe (2315), Rated blitz game, lichess.org, 2019. (=1.c4 A15: English Opening: 1...Nf6 1...Nf6 2.b4 e6 3.a3 c5)

5.e3 d4 6.ed4 Qd4 (6...cd4 7.Nf3+=) 7.Nc3= Ne4 (7...Qd8 8.Nf3=) 8.Qf3 Nc3 9.dc3 Qe5 10.Be3?? (better is 10.Be2=) 10...Qc3-+ 11.Ke2 (11.Kd1 Qa1 12.Bc1 a6-+) 11...Qa1 12.Nh3 Be7 (12...a6 13.Ng5 f6 14.Ne4 ab5 15.Qh5 g6 16.Qh4-+) 13.Qg3 (13.Bg5 Qb2 14.Kd1 e5-+) 13...Qb2 (better is 13...0-0 14.Bd2-+) 14.Kf3 (14.Kd1 Qb3 15.Ke1 Qb1 16.Ke2 0-0-+) 14...Qc3 (better is 14...e5!? 15.Rg1-+) 15.Qc7 Qf6 (15...Nd7 16.Nf4-+) 16.Ke2 (16.Qf4 Qa1 17.Qc7 Nd7-+) 16...0-0 (16...Nd7 17.Qg3-+) 17.g4 (17.Bc5 Qb2 18.Kf3 Qc3 19.Be3 Qa3-+) 17...Rd8 (17...e5 18.f3 e4 19.Qf4 Qb2 20.Bd2-+) 18.g5 Qb2 19.Kf3 Re8 (19...Nd7 20.Bc5 Ne5 21.Kg2-+) 20.Bd3 (20.Bd3 Qa3 21.Rd1-+; 20.Kg2 Qa3 21.Be2 Qa2-+). Quast,M - Kitzler,G, Wemding GP, 1998.

5.e3 d4 6.Nf3 de3 7.fe3 a6=.

5.e3 Bd6 6.Bb2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 Bd6 6.c4).

5.e3 Nbd7 6.Nf3 a6 7.Nc3 dc4 8.Bc4 Nb6 9.Be2 ab5 10.Bb5 Bd7 11.d4 cd4 12.Qd4 Bb5 13.Nb5 Qd4 14.Nfd4 Bb4 (14...Kd7 15.Rb1=) 15.Ke2 0-0 (15...Ke7 16.Nb3 Bd6 17.Nd6 Kd6 18.Bb2=) 16.Bb2 Be7 17.Rac1 Rfc8 18.Kd3 (18.Rc8 Rc8 19.Rb1 Kf8=) 18...Na4 (18...Ng4 19.Ke2=) 19.Ba1 Kf8 20.f3 Nd5 21.g3 Bf6 (21...Nc5 22.Ke2=) 22.e4 Ndb6 23.f4 (better 23.Nc7!? Rab8 24.Rc2+=) 23...Nc5=+ 24.Ke3 e5 25.Nf5 ef4 26.gf4 (26.Kf3 Ba1 27.Ra1 fg3 28.hg3 h6-/+) 26...Ba1-/+ 27.Ra1 Nb3?? (better 27...Nc4 28.Kf3 Nb3-/+) 28.Rab1+= Nc4 29.Kd3 Nba5 (29...Nbd2 30.Rb4+=) 30.Nfd6 Rd8 31.e5 Nd6 32.Nd6 Nc6 (32...Rd7 33.Rhc1+/-) 33.Rb7 Ra3 34.Ke4 Rb8? (34...Ra4 35.Kf3+/-) 35.Rhb1 (better 35.Rf7 Kg8 36.Rg1 Rb4 37.Kd5 Rd4 38.Kc6 Rd6 39.ed6 Rc3 40.Kb6 Kf7 41.d7+-) 35...Ra4+/- 36.Kf5 (better 36.Kf3 Ra3 37.Kg4 Rb7 38.Rb7+/- (38.Nb7?! Ra4=)) 36...Nd4? (better 36...Rb7 37.Rb7 g6 38.Kg5 h6 39.Kh6 Rf4=) 37.Kg4+- Rb7 38.Rb7 (38.Nb7?! Ne6=) 38...Ne6 39.Rf7 Kg8 40.Kf5 (better 40.Re7 h5 41.Kh5 Nf4 42.Kg5 Nh3 43.Kf5 Rf4 44.Ke6+-) 40...Nd4= 41.Kg5 Nf3 42.Kg4?? (better 42.Kh5 Rd4 43.h3+=) 42...Nh2 (better 42...Ne5 43.Kg3 Nf7-+) 43.Kg3 Nf1 44.Kf2 Nd2 45.e6 (better 45.Rc7 g6 46.Ke3 Nf1 47.Ke2 Ng3 48.Kf3+/-) 45...Ne4= 46.Ke3?? (better 46.Ne4 Re4 47.f5=) 46...Nd6-+ 47.Rd7 Ne8 (better 47...Re4 48.Kf3 Re6 49.Kg3-+) 48.Rd8 Kf8 49.Re8? (49.Rd7-+) 49...Ke8 50.f5 Ke7 51.Kf3 Ra5 52.Ke3 (52.Kg4-+) 52...Rf5 53.Ke4 Rf6 54.Ke3 Re6 (54...g5 55.Ke4 g4 56.Kd3 g3 57.Kc3 g2 58.Kd4 g1Q 59.Kc4 Qg4 60.Kb5 Rf5 61.Kc6 Qb4 62.Kc7 Rc5) 55.Kd4 (55.Kf4-+) 55...h5 56.Kd3 h4 57.Kd2 (57.Kc2 h3 58.Kb2 h2 59.Kc3 h1Q 60.Kc4 Qe4 61.Kb3 Rb6 62.Kc3 Rc6 63.Kb3 Qb1 64.Ka4 Ra6) 57...h3 58.Kd1 (58.Kc3 h2 59.Kd4 h1Q 60.Kc4 Qe4 61.Kb3 Rc6 62.Ka3 Rb6 63.Ka2 Qa4) 58…h2 (58...h2 59.Kd2 h1Q 60.Kc3 Qc1 61.Kb4 Rb6 62.Ka5 Qc5 63.Ka4 Qb4) 0-1. omurtag13 (2350) - Powerdonok (2440), Rated Blitz game, lichess.org, 2016. (=1.a3 A00: Irregular Openings 1...c5 2.c4 Nf6 3.b4 e6)

5.e3 Nbd7 6.Nf3 b6 7.Bb2 Bd6 8.Nc3 Bb7 9.d4 Qc7 10.Rc1 0-0 11.Bd3 Rac8 (11...cd4 12.Ne2 de3 13.fe3-/+) 12.h3 (better is 12.cd5 ed5 13.Qa4=) 12...cd4-+ 13.Nd4 e5?? (better is 13...dc4 14.Bf1 Ne5-/+) 14.Nf5 Nc5 (14...d4 A) worse is 15.Nd6 Qd6 16.ed4 Qd4+= (worse is 16...ed4 17.0-0+=); B) 15.ed4 ed4 16.Ne2=) 15.Bb1 (better is 15.cd5 Qd7 16.e4+/-) 15...d4= 16.ed4 ed4 17.Nd5 (worse is 17.Qd4 Bf4 18.0-0 Ne6-/+) 17...Bd5 18.cd5 Nd5 19.Qd4 (better is 19.0-0 Bh2 20.Kh1+=) 19...Rfe8 20.Kf1 Be5 21.Qd5 Bb2 22.Rd1 Ba3 23.g4 Ne6 24.Qf3 Bc5 25.h4 Qf4 26.Kg2 Qf3 (26...g6!? 27.Qf4 Nf4 28.Kf3 Ne2-+) 27.Kf3-/+ g6 28.Nd6 Nd4 (better is 28...Bd6 29.Rd6 Rc3 30.Bd3 Nc5-/+) 29.Rd4= Bd4 30.Ne8 Re8 31.Rd1 Bc5 32.Be4 Kg7 33.Bc6 Re7 34.Rd2 Kf6 35.Rd8 Kg7 36.Rd2 ½-½. Campos Calvo (2055) - Pascual Perdiguero (1870), Madrid-ch Veterans, 2009.

5.Bb2?? b6 6.d4 Be7 7.Qc2 Bb7 8.Nd2 d6 9.e4 Qc7 10.f4 d5 11.e5 Ng4 12.Qd3? (better is 12.Rc1=) 12...Bh4-+ 13.g3 dc4 14.Nc4 Be7 (better is 14...Bh1 15.Nd6 Kd8 16.gh4 Bd5-/+ (worse is 16...Nh2 17.Rc1 Nc6 18.Qh3+/–)) 15.Nf3= Bd5 16.Rc1 Qb7 17.Be2 0-0 18.h3 Nh6 19.g4 Rc8 20.0-0 Nd7 21.Kh2 g6 22.Ne3 Be4 23.Qd1 Rc1 24.Bc1 Kg7 25.Nd2 Rc8 26.Ne4 Qe4 27.Nc4 b5 28.Bf3 Qb1 29.Nd2 Qa2 30.Qb3 Qb3 31.Nb3 Rc3 32.Bd1 Nb6 33.Bb2 Rd3 34.Bc2 Re3 35.Rf2 Nc4 36.Bc1 Rc3 37.a4 ba4 38.Nc5? Bc5-+ 39.dc5 a3 40.c6 Ng8 41.c7? Ne7 42.Be4 Rc1 43.Bb7 Nb6 44.Ra2 Rc3 0–1. Ishin,Igor – Nugaev,N (1985), White Nights Open, St Petersburg RUS, 2008.

5.Bb2?? Qb6 6.e3 Qb2-+.

5.Nc3 d5 6.cd5 ed5 7.e3 0-0 8.d4 Bb6 9.Bd3 Nc6 10.Nge2 Bg4 11.Bd2 Rc8 12.h3 Bh5 13.Qb1 Re8 14.0-0 Bc7 15.Qb7 Qd6 16.Ng3 Na5 17.Qa6 Nb3 18.Ra2 (better is 18.Qd6!? Bd6 19.Nh5 Nh5 20.Nb5+=) 18...Nd2 19.Qd6 Bd6 20.Nh5 Nh5 21.Nb5 Nf1 22.Nd6 Rc1 23.Bf1 Re6 24.Nf5 g6 25.Nh4 Rb6 26.Nf3 Nf6 27.Nd2 Ne4 28.Ne4 de4 29.f3 ef3 30.gf3 Rbb1 31.Rf2 Ra1 32.Kg2 Ra3 33.e4 Rac3 34.Be2 a5 35.d5 R3c2 36.Bb5 Kf8 0–1. Valenta,Vit (2235) – Bazant,Petr Jr (2280), CZE–chT2e, 2007.

5.d4 Bb6 6.Bb2 d5 7.e3 0-0 8.Nd2 Nc6 9.Ngf3 Bd7 10.Be2 Rc8 (10...Bc7 11.0-0=) 11.0-0 Ne7 (11...Bc7 12.Rc1=) 12.Rc1 (12.Qb3 Bc7+=) 12...Nf5 (12...Bc7 13.Ne5=) 13.Bd3 (13.Ne5 dc4 14.Bc4 Nd6+=) 13...Re8 (13...Bc7 14.c5+=) 14.Ne5 (14.Qb3 Bc6+=) 14...Re7 (better is 14...Bc7+=) 15.e4?? (better is 15.g4!? dc4 A) 16.Rc4?! Nd6+=; B) 16.Bc4?! Nd6=; C) 16.Nd7?! C1) worse is 16...Qd7 17.Nc4 (17.Bc4?! Nd6=) 17...Nh4 18.Ne5+/–; C2) 16...Rd7 17.Nc4 Nd6+=; D) 16.Ndc4+/–) 15...dc4 (15...Bd4 16.Qc2 Qb6 17.Bc3 de4 18.Ne4 Ne4 19.Be4 Bc3 20.Qc3+=) 16.ef5 (16.Ndc4!? Nd4 17.Nb6 Rc1 18.Qc1 Qb6 19.Qb1=) 16...cd3+= 17.fe6 Be6 18.Ndf3 Bd5 19.Rc8+= Qc8 20.Qd3 h6 21.Rc1 Rc7 22.Rc7 Qc7 23.Nh4 Be4+= 24.Qd2 Qc2 25.Qc2= Bc2 26.Nc4 Bc7 27.f3 b5 28.Ne3= Bb3 29.Nhf5 Kf8 30.Bc3 a5 31.Nf1 Nd5-/+ 32.Bb2 b4 33.Nd2 Bc2 34.Ng3 Ke7 35.Nge4 Ne3 36.d5 f6-+ 37.d6 Bd6 38.Nd6 Kd6 39.Bd4 Nd1 40.Bb6 b3 41.Bd4? Kd5 (41...Kd5 42.Bb6 a4-+) 0–1. Vandenburg,V – Baker,R, Plymouth MI, 1984.

5.d4 Bb6 6.Nf3 0-0 7.Nc3 d6 8.e3 Bc7 9.Bd3 Nc6 10.0-0 e5 11.Nd5 ed4 12.Nc7 Qc7 13.ed4 Bg4 14.Be3 Rfe8 15.h3 Bh5 16.Re1 Re7 17.Be2 a6 18.g4 Bg6 19.Bf4 Qd7 20.d5 Na7 21.Bg5 h6 22.Bf6+/– gf6 23.Qd4 Rae8 24.Bf1 Nc8 25.Re7 Re7 26.Qf6 Re8 27.Ra2 Qe7 28.Qd4 Qe4? 29.Re2+– (29...Qe2 30.Be2 Re2 31.c5+–) 1–0. weBNimzo – 2good2be#1, ChessWorld.net, 2004.

5.e3 0-0 6.Nf3 d5 7.Bb2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.bc5 Bc5 6.Nf3 0-0 7.c4).

5.Nf3 Nc6 6.e3 Qa5 7.Nc3 0-0 8.Bb2 b6 9.d4 Be7 10.Bd3 d5 11.0-0 Ba6 (12.Nd2 dc4 13.Nc4 Bc4 14.Bc4 Rac8=). sugamuxi – BeerClark, ChessWorld.net, 2004.

6.Nc3 d5 7.Nf3 0-0 8.e3 Nc6 9.Bd2 b6 10.cd5 Nd5 11.Bd3 Bb7 12.0-0 Nf6 13.Qe2 Rc8 14.h3 Re8 15.Rfd1 Qc7 16.e4 Red8 17.e5 Nd5 18.Nb5 (18.Qe4 g6 19.Nd5 Rd5=) 18...Qb8 (18...Qd7 19.Qe4 f5 20.ef6 Nf6 21.Qe2=) 19.Qe4 g6 20.Qg4 (20.Qe1 a6 21.Nc3 Nc3 22.Bc3 b5=) 20...Bf8 (20...a6 21.Nd6 Bd6 22.ed6 Qd6 23.Bg5-/+) 21.h4 (21.Rdc1 a6 22.Nc3 Nce7=) 21...Nce7 (better 21...a6!? 22.h5 ab5 23.hg6 fg6 24.Bg6 Rc7 25.Bf5 Rg7 26.Be6 Kh8=) 22.Nd6 (22.Rdc1 Nf5 23.Bg5 Rc1 24.Rc1 Rc8 25.Rc8 Qc8 26.Na7 Qc3-/+) 22...Rd6= 23.ed6 Qd6 24.h5 (24.Ne5 Bg7=) 24...Nf5 (24...Nf6 25.Bf4 Qd8=+ (worse 25...Ng4 26.Bd6 Bf3 27.gf3=)) 25.hg6+= hg6 26.Ne5 (26.Bf5 ef5 27.Qh4 Bg7+=) 26...Bg7 27.Bb4 (27.Bf5 gf5 28.Qh4 Be5 29.de5 Qe5+=) 27...Qd8 (27...Nb4 28.ab4 Nd4 29.Ra7 Rc7= (29...Qb4?? 30.Rb7 Nc6 31.Qb4 Nb4 32.Nf7+-)) 28.Ng6?? (better 28.Bf5 gf5 29.Qh5+=) 28...fg6-+ 29.Qg6 Qf6 30.Qh5 (better 30.Qg4!?-+) 30...Nf4 (30...Nb4?! 31.ab4 Ra8 32.Bf5 Qf5 33.Qf5 ef5 34.b5=+) 31.Qg4 Nd3 (31...Nd4!? 32.Bf1 Rc2 33.Bd2 Ng2 34.Bg2 Nf3 35.Bf3 Bf3 36.Qf4 Rd2 37.Qf6 Bf6 38.Rd2 Ba1 39.Rd7-+) 32.Rd3 Kf7 33.Re1 Bd5 34.Rh3 Rg8 (34...Rc4 35.Rc3-+) 35.Qh5 (35.Rc1 A) 35...Qd4?? 36.Qh5 Kf6 37.Bc3 Qc3 38.Rcc3+- (worse 38.Rhc3 Bh6+-); B) 35...Nd4 36.Qh5 Qg6 37.Rc7 Ke8 38.Qg6 Kd8 39.Qf7 Ne2 40.Kf1 Ng3 41.Rg3 Bg2 42.Rg2 b5 43.Qd7; C) 35...Qg6 36.Rc7 Kf6-/+) 35...Qg6-+ 36.Qg6 Kg6 37.g4 (better 37.Bc3-+) 37...Nd4 38.Ree3 (38.Kf1 Rc8-+) 38...Bh6 39.Rd3 Bg5 (better 39...Ne2 40.Kf1 Nf4 41.Rd5 ed5-+) 40.Rd4+- Rc8 41.f4 Bf6 42.Rd2 Rc1 43.Kf2 a5 44.f5! Kg5 (44...ef5 45.Rd5 Deflection (45.gf5 Passed pawn)) 45.Bd6?? (better 45.Rd5 ed5 46.Bd2 Kg4 47.Rg3 Kf5 48.Rf3 (48.Bc1?! Bh4=) 48...Ke6 49.Bc1+-) 45...Bc3 (45...Kg4 46.fe6 Be6 47.Rg3 Kh5 48.Re3+/-) 46.Rdd3+/- Be1 47.Ke2 Kg4?? (better 47...Bc4 48.fe6 Be6+/-) 48.Rhe3 (better 48.f6 Bh4 49.f7 Re1 50.Kd2+-) 48...Kf5=+ 49.Rd1 (49.Rd4 b5=+) 49...Rd1-/+ 50.Kd1 Bh4 51.Re5 Kf6 52.Re3 Bg5 (52...Bf2 53.Rh3-/+) 53.Be5 (53.Rc3 Kf5=+) 53...Kg6 (53...Kf5 54.Rg3-/+) 54.Re1 Kf5 (better 54...Be7 55.Bb2 b5-/+) 55.Kc2?? (55.Bc7 a4 56.Bb6 Bb3 57.Ke2 Be7=) 55...Bf4?? (better 55...Be4 56.Re4 Ke4-+) 56.Bf4-/+ Kf4 57.Kc3 e5 (57...b5 58.Rb1 Bc6 59.Kd4=) 58.Kd3?? (58.Rb1 a4+=) 58...e4?? (better 58...b5-/+) 59.Kc3 (59.Kd4 Bc6+=) 59...e3 60.Kd4 Kf3? (better 60...Bf3 61.Re3 b5+=) 61.Re3+- (61.Kd5?! Kf2 62.Rh1 b5+/-) 61...Kf2 62.Re5 Bf3 (62...Bb3 63.Rb5 a4 64.Rb6+-) 63.Rb5 Be2 64.Rb6 a4 65.Rc6 (better 65.Kc5!? Bd1 66.Rb1 Bg4+-) 65...Bd1 66.Rc3 Bb3?? (66...Ke2 67.Kc4+-) 67.Kc5 (67.Rb3 ab3 68.Kc3 Ke3 69.Kb3 Kd4+-) 67...Bd1 (67...Ke2 68.Kb4 Bd1 69.Rc1+-) 68.Kb4 Bb3 (68...Ke2 69.Rc1 Bb3 70.Rb1+-) 69.Rc5 (better 69.Rb3 ab3 70.Kb3+-) 69...Bd1? (better 69...Ke3+-) 70.Ra5 Bb3 71.Ra4 Bd1 72.Ra5 Ba4 (72...Ke3 73.a4+-) 73.Rc5 (73.Ra4 Kf3+-) 73...Ke3 (73...Be8+-) 74.Ka4 Kd4 75.Kb4 (75.Kb4 Ke3 76.a4 Kd3 77.a5 Ke4 78.a6 Kf4 79.a7 Kg4 80.a8Q Kf4 81.Qf8 Ke3 82.Kc3 Ke4 83.Qf5 Ke3 84.Re5) 1-0. black_bishop_88 (2640) - Nick210377 (2415), lichess.org, 2020. (=1.a3 Nf6 2.c4 c5 3.b4 e6)

6.e3 0-0 7.Bd3 d5 8.cd5 ed5 9.Nf3 Ne4 (9...Nc6 10.0-0=) 10.0-0 (10.Qb3 Qc7 11.Bd2 Be6=) 10...Nc6 11.Bb2 (11.Qb3 Na5 12.Qb2 Bf5=) 11...Bf5 12.Nc3 Rc8 13.Qb1 Nc3 14.Bc3 Bd3 15.Qd3 Rc7 16.Rfb1 Qd6 17.Bd2 (17.Bb4 Nb4 18.ab4 Rfc8=) 17...Rfc8 (17...Qe6 18.Bb4=) 18.Rb5 Rd7 19.Qb3 Attacks the isolani on d5 19...b6 20.a4 Qe6 21.h3 (21.Re1 Qe4=) 21...h6 (21...Bd8 22.Qd3=) 22.Ne1 Bg5 23.Qb2 Bd8 24.Nd3 Qf5 25.Rb3 g6 (25...Rdc7 26.Rc1=) 26.Rd1 Rdc7 27.Qb1 Rd7 (27...Qe4 28.Rb5=) 28.Rb5 (28.Rc3 Rdc7+=) 28...Kg7 (28...Bc7 29.Rc1 Bd6 30.Qb3=) 29.Rc1 g5 (29...Rdc7 30.Re1 Qe4 31.Nf4+=) 30.Rc3 (30.Ne5 Qb1 31.Rbb1 Rdc7=) 30...Rdc7= 31.Ra3 Rd7 32.Qc2 Rdc7 33.Qd1 Rd7 34.Qg4 (34.a5 a6 35.Rb6 Bb6 36.ab6 Rd6+=) 34...Qg4= 35.hg4 Ne7 36.Kf1 a6 37.Rb1 f6 (37...Ng6 38.Ra2=) 38.Ke2+= Rd6 39.Nb4 a5 40.Na2 Kg6 41.Rc3 Nc6 42.Bc1 (42.Nc1 Re6 43.Kf3 Bc7+=) 42...Rc7 (42...h5 43.gh5 Kh5 44.Ba3+/–) 43.Ba3 Re6 44.Kd3 Rd7 45.Rcb3 Bc7 46.Nc3 Bd6 (46...Na7 47.R3b2+/–) 47.Bd6 Red6 (47...Rdd6 48.Rb5 (48.Rb6?! Ne5 49.de5 Rb6 50.Rb6 Rb6+=) 48...Ne7 49.g3+/–) 48.Na2 (48.Rb6 Nb4 49.R1b4 ab4 50.Rb4 Kf7+/–) 48...Nb4 (48...Rb7 49.Rb5+/–) 49.Nb4+– ab4 50.Rb4 Ra7 51.f3 Rc6 52.R1b2 (52.e4 de4 53.fe4 Kf7+–) 52...Kf7 53.Rc2 Rc2 54.Kc2 Ra6 55.e4 (55.Kd3 Ke6+–) 55...de4 56.fe4 Ke7 57.Kc3 Ra5 (57...Kd6 58.Rc4+–) 58.d5 Ra8 (58...Ra7 59.Rc4+– (59.Rb6?! Ra4 60.Rb4 Ra2+/–)) 59.Rc4 (59.Rb6?! Ra4 60.Rb7 Ke8 61.Rb8 Kd7+/–) 59...Kd6 60.Rc6 (60.Kb4!? Ke7+–) 60...Ke7 (60...Ke5 61.Re6 Kf4 62.Kb4+– (62.Rb6?! Ra4 63.Re6 Ra7+–; 62.Rf6?! Ke4 63.Kb4 Kd5+/–)) 61.Re6 (61.Re6 Kf7 62.Kb4+– (62.Rb6?! Ra4 63.Rb4 Ra2+/–); 61.Rb6?! Ra4 62.Rb4 Ra3 63.Rb3 Ra4+/–) 1–0. Cirulis,Ilmars (1890) – Duttagupta,Aniruddha (1885), FICGS, 2015.

6.e3 0-0 7.Nf3 Ne4 8.Bd3 Ng5 (8...d5 9.0-0=) 9.Ng5+= Bg5 10.Bb2 d5 11.cd5 Qd5 12.0-0 b5? (better is 12...Be7+=) 13.Nc3+– Qd7 (13...Qb7 14.Be4 (14.Bb5?! a6+=; 14.Nb5?! Bd7 15.Qh5 h6+–) 14...Nc6 15.d5+–) 14.Qg4 (14.Bb5?! Nc6+–; 14.Nb5?! h6+–) 14...h6 (14...Ba6 15.Qg5 b4 16.Nb5+–) 15.Qe4 (15.Nb5?! f5 16.Qh5 Bb7+–; 15.Bb5?! Nc6+–) 15...f5 16.Qa8 Nc6 (16...Ba6 17.d5 b4 18.ab4 Bd3 19.Ra7 Qe8+–) 17.Bb5 (17.Nb5?! Bb7 18.Qf8 Kf8+–) 17...Bb7 18.Qa7! Na7 (18...f4 19.e4+–) 19.Bd7 Rf6 (19...Kf7 20.d5! ed5 21.Bf5+–) 20.f4 Bh4 21.g3 Rg6 (21...Kf7 22.e4 Ke7 23.Ba4+–) 22.Be8 Rg4 23.Bh5 (23.Bh5 Bf6 24.a4+–) 1–0. aspasio – marcteriele (2165), net–chess.com, 2014.

6.e3 Nc6 7.Nc3 d5 8.cd5 ed5 9.Bd3 0-0 10.Nge2 a6 11.0-0 b5 12.f3 (12.Qc2 Qd6=) 12...g6 (12...Be6 13.Nf4+=) 13.Bc2 Bb7 (13...Be6 14.e4=) 14.e4 de4 (14...Rc8 15.e5 Ne8 16.Qd3=) 15.fe4+= Rc8 16.Rf3 (16.e5 Nh5 17.Be3 Na5+=) 16...Na5= 17.Rf1 Qc7 (17...Nc4 18.Qd3=) 18.Bf4 White intends e5 (18.Rb1 Nc4=) 18...Qd7 19.h3 (19.d5 Ng4 20.Qe1 g5+=) 19...Nc4 Attacks the isolani on a3 20.Bh6 Rfe8 21.e5 (21.Qc1 Nh5+=) 21...Nd5-/+ 22.Bb3 Nc3 23.Nc3 1–0. Cirulis,Ilmars (1840) – Duttagupta,Aniruddha (2000), FICGS, 2015.

6.Nf3 0-0 7.e3 (7.Bf4 d6=) 7...b6 (7...Nc6 8.Bd3=) 8.Be2 (8.Bd3 Bb7=) 8...Bb7 (8...d5 9.0-0=) 9.0-0 d5 10.Nc3 (10.cd5 Qd5 11.Nc3 Qa5=) 10...dc4 11.Bc4 Qc7 12.Ne5 a6 13.Bb2 (13.Rb1 Nc6 14.Qb3 Ne5 15.de5 Nd7-/+) 13...Nc6 14.Nf3 (14.Ng4 Rfc8 15.Nf6 Bf6=) 14...Na5 15.Be2 (15.Bd3 b5=) 15...b5=+ 16.Rc1 (16.Ne5 Nc6 17.Rc1 Bd6=) 16...Qb6 (16...Nc4 17.Bc4 bc4 18.Ne5=+) 17.Rb1 (17.Ne5 Rac8=) 17...Rac8 18.Ne5 Qa7 (18...Nc6 19.Nf3=+) 19.Bf3 (19.Bd3 Nc6=) 19...Bf3 (19...Nc4 20.Nc4 Bf3 21.Qf3 Rc4 22.Rfc1=+) 20.Qf3 Qa8 (20...Nd7 21.Nd3=) 21.Qe2 (better is 21.Qa8 Ra8 22.Rfc1=) 21...Ba3?? (better is 21...Rfd8=) 22.Ba3+– Rc3 23.Bf8 Kf8 24.Qb2+– Nd5 25.Nd7 Ke8 26.Nb6!+– Qc6 27.Nd5 ed5 28.Rbc1 Rc1+/– 29.Rc1 Nc4 30.Qc2 g6 31.f3 Qb6 32.Qd3 a5 33.e4 de4 34.fe4 a4 35.Rb1 Qa5 36.Qg3 Qb6 37.Qc3 Na5 38.Qc8 Ke7+/– 39.Qc5 Qc5+= 40.dc5 Nb3 41.Kf2 Kd7 42.Rb2 Kc6 43.Rc2 Nc5= 44.Ke3 Kb6 45.Kd4 Ne6-/+ 46.Kc3 Ka5 47.Kb2 b4 48.Rc8 Kb5 49.h4 h5-+ 50.g3 Nc5 51.Rc7 Kc4 52.Rf7 Nd3 53.Kb1-/+ b3 54.e5? Ne5-+ 55.Rf4 Kb5 56.Rd4 Nc4 57.g4 Kb4 58.gh5 gh5 59.Rd5 Kc3 60.Rc5 a3 61.Rc8 a2 62.Ka1 Kb4 63.Rb8= Ka4 64.Ra8 Kb5 65.Rd8? Nb6?? 66.Rd2?? Nc4?? 67.Rh2?? Ne3-+ 68.Rh1 Nc2 69.Kb2 a1Q 70.Ra1 Na1 71.Ka1 Kb4 72.Kb2 ½–½. Berrio,Ana – Bobadilla,Mario, ATL–ch sf Barranquilla, 2001.

6.Nf3 d5 7.e3=.

6.Bf4 0-0=.

6.Bf4 Nc6 7.Nf3 d5 8.e3 0-0 9.c5 b6 10.cb6 Qb6 11.Nbd2 Nh5 12.Rb1 Qa5 13.Ne5 Ne5 (13...Nf4? 14.Nc6 Qa3 15.Ne7 Qe7 16.ef4+–) 14.Be5 (< 14.de5 Nf4 15.ef4 Qa3-/+) 14...Nf6 15.Bb5 Ba6 (< 15...Ba3 16.Bf6 gf6 17.Bc6+/–) 16.a4 Bb4?? (better is 16...Ne4=+) 17.Rb4!+/– Qb4 18.Ba6 Qa4?? (better is 18...Ne4+/–) 19.Qa4+– (19...Rad8 20.Bf6 gf6 21.Bb7+–) 1–0. b4_player (2230) – Orla (1940), GameColony.com, 2003.

4.Bb2 Be7 5.Nf3 0-0 6.d4 b6 7.Nbd2 d5 8.c5 bc5 9.bc5= a5 10.Qb3 Ba6 11.e3 Bf1 12.Nf1 a4 13.Qc2 Ne4 14.N1d2 Qa5 15.0-0 f5 16.Ne4 fe4 17.Ne5 Bf6 18.Bc3 ½–½. Chairboy – melr11, ChessWorld.net, 2005.

4.Nc3 d5 5.c5 Qc7 6.Bb2 Nbd7 7.Qc2 g6 8.0-0-0 Bg7 9.e3 b6 10.d4 bc5 11.dc5 a5 12.Na2 ab4 13.Nb4 Qa7 14.Nd3 Ba6 15.Nf3 Bd3 16.Rd3 Nc5 17.Rc3 Nfe4 0–1. Isenhower,David – Wall,Bill, Barium Springs, NC, 1977.

4.Nc3 d5 5.c5 Nbd7 6.d4 Be7 7.Nf3 Nf8 (7...Qc7 8.e3=) 8.Bf4 (8.e3 Bd7+=) 8...Ng6= 9.Be5 (9.Bg3 0-0=) 9...0-0 10.e3 (10.Bg3 a5=) 10...b6 (10...Ne5 11.Ne5 (< 11.de5 Nd7=+) 11...a5 12.Bd3+=) 11.Bd3+= bc5 12.bc5 Nd7 (12...Qa5 13.Qd2+=) 13.Bd6 (13.Bg6!? fg6 14.Qa4 Rf3 15.gf3 Ne5 16.de5+=) 13...Bd6= 14.cd6 Nf6 15.Ne5 (15.Qa4 Qd6 16.Qb4 Qb4 17.ab4 Bd7=) 15...Qd6 16.Bg6 fg6 17.f3 Rb8 18.a4 Ba6 19.Rb1 Rb1 20.Nb1 Qb4 21.Nd2 Rc8 22.Qb3 c5 23.Qb4 cb4 24.Kf2 Rc2 25.Rd1 Ra2 26.Nc6 Ra4 27.Na7 Ra2-+ 28.Nc6? Rb2?? 29.Ke1-/+ Bc4 30.Na5 Bb5 31.Rb1 Ra2 32.Nab3 Nd7 33.Rc1 h5 34.Rc7=+ Kh7 35.Rb7+= Ba4 36.Rb4 Bb3 37.Rb3 Ra1 38.Rb1 Rb1 39.Nb1 g5 40.Nc3 Kg6 41.e4 de4 42.Ne4 Nb6 43.Nc3 Kf5= 44.g3 g4 45.f4 Nd5 46.Kd2 g5 47.fg5 Kg5 48.Nd5 ed5 49.Ke3 Kf5 50.Kd3 Ke6?? 51.Ke3?? Kd6?? 52.Kf4+– Kc6 53.Ke5 (53.Ke5 Kc7 54.Kd5+–) 1–0. bvboucher (2050) – alexp (2235), net–chess.com, 2005.

4.Qb3 a5 5.ba5 Nc6 6.cd5 ed5 7.e3 Na5 8.Qd1 (8.Qc2 Bd6+=) 8...Bd6-/+ 9.Bb5 c6 10.Bd3 Ne4 11.Be4 (11.Bb2 0-0-/+) 11...de4 12.Ne2 (12.Nc3 Be5-/+) 12...Be5-+ 13.Nec3 (better is 13.Nbc3-+) 13...Be6 14.0-0 (14.d4 ed3 15.Bd2 Qb6-+) 14...Nb3 15.Ra2 Nc1 16.Qc1 Ba2 17.Na2 Qd6 18.Nbc3 (18.h3-+) 18...Bh2 (worse is 18...Ra3 19.h3 f5 20.Rd1-+; 18...Qa3?! 19.Qb1-+) 19.Kh1 Qh6 (19...Qh6 20.Rd1 Bd6 21.Kg1 Qh2 (worse is 21...Ba3 22.Qb1-+) 22.Kf1 Qh1 23.Ke2 Qg2-+; 19...Ra3?! 20.g3-+) 0–1. Hess,Volker – Deluchey,Jean_Philippe (1700), FICGS, 2008. (=1.c4 Nf6 2.b4 e6 3.a3 d5)

4.c5 a5 5.Bb2 ab4 6.ab4 Ra1 7.Ba1 Na6 8.Bc3 (8.Qb3 Be7=+) 8...c6 (better is 8...d4!? 9.Bb2 Nb4 10.Qa4 Nc6-+) 9.e3 b5 10.d4 Be7 (10...Ne4 11.Qc2=) 11.Nf3 0-0 12.Bd3 Nd7 13.Qc2 f5 14.0-0 Nc7 15.Nbd2 Ne8 16.Ra1 Nef6 17.Nb3 Ne4 18.Be4 (better is 18.Ra7!?+/–) 18...fe4= 19.Ne1 Nf6 20.Ra7 (better is 20.Qe2!?=) 20...Ng4-/+ 21.Na5 Rf2?? (21...Bd7 22.Qe2 Nf2 23.Qh5-/+) 22.Qf2 Nf2 23.Kf2 Bd7-+ 24.g3 h5 25.Ng2 g5 26.Ke2 h4 27.Ne1 hg3 28.hg3 e5 29.de5 Bg4 30.Kf2 Qf8 (31.Kg2 Bf3 32.Kg1 Qe8-/+) 0–1. 2good2be1 – NathanStack, ChessWorld.net, 2004.

4.c5 b6 5.d4 Bb7 (5...a5 6.Bb2=+) 6.Bf4 Nbd7 (6...a5 7.Nc3=) 7.Nf3 Nh5 (7...a5 8.Nc3 Nh5 9.Bg5=) 8.Bg5 Be7 (8...Nhf6 9.Qa4 c6 10.Qb3=) 9.Bd2 (9.Be7 Qe7 10.e3 Nhf6=) 9...0-0 (9...Nhf6 10.Qc2 c6 11.Bf4=+) 10.Qc2 Nhf6? (better is 10...c6=) 11.c6+– Ba6 12.cd7 Qd7 (12...Nd7 13.Qc6 Qc8 14.Bf4+–) 13.Ne5 Qc8 14.Nc3 Bd6 15.f4 Nd7 16.b5 Bb7 17.e4 Be5 18.fe5 de4 19.Ne4 f5 20.Ng5 Qe8 21.Bc4 Bd5 22.Bd5 ed5 23.g4 h6 24.gf5 hg5 25.f6?? gf6 26.0-0-0 c5 27.bc6+= Nb8 28.Kb2 Nc6+= 29.h4?? Nd4-+ 30.Qd3 Ne6?? 31.hg5+/– Ng5? 32.Bg5 Rf7?? 33.Bf6 Rf6 34.ef6 (34.ef6 Qe5 35.Kb3 Kf8 36.Rh8 Kf7 37.Qh7 Ke6 38.Qe7 Kf5 39.Rh5 Kf4 40.Rf1 Kg4 41.Qg7 Kh5 42.Rh1 Qh2 43.Rh2#; 34.Qh7 Kf8 35.Qh8 Ke7 36.Qf6 Kd7 37.Rh7 Kc8 38.Rc1 Qc6 39.Qf8#) 1–0. Gaudissimo (1690) – Agilisaurus (1635), internet, 2007.

4.c5 d4 5.d3 a5 6.Bb2 ab4 7.ab4 Ra1 8.Ba1 e5 9.f3? (better is 9.Nf3 Nc6 10.e3 de3 11.fe3-/+) 9...Nd5-+ 10.Qa4 Bd7 (10...Nc6 11.b5 Ncb4 12.f4-+) 11.b5 (better is 11.Qb3 Ne3 12.Nd2-+) 11...Bc5 12.h4 0-0 13.g4 Ne3 14.Bh3 Na6!! 15.g5 Nb4 16.Bd7 Qd7 17.Kd2 Qf5 18.Nh3 Nbd5 19.Bb2 f6 20.gf6 Qf6 21.Ng5 Qf4 22.Ne6 Nf1 23.Kc2 Qe3 24.Nc5 Qe2 25.Kb3 b6 26.Qc4?? Rd8 27.Ne4 Qg2 28.Rf1 Qf1 29.Nbd2 Qd1 30.Qc2 Qh1 31.Nc4 Qh4 32.Ne5=+ Qf4 33.Bd4+= Rc8?? 34.Qc6+– Rd8 35.Qe6 Kf8 36.Nd7 Rd7 37.Qd7 Qf7 38.Qd8 Qe8 39.Qd5 (39.Qd5 Qf7 40.Qf7 Kf7 41.Be5+–) 1–0. dhub noire – dixi82, ChessWorld.net, 2007.

4.c5 d4 5.d3 b6 6.Qa4 Bd7 7.Qc2-/+.

4.c5 d4 5.d3 c6 6.Bf4 (6.Qa4 e5=+) 6...Nd5 (6...b6 7.cb6 ab6 8.Nf3=+) 7.Be5= Nf6 (better is 7...f6!? 8.Bd4 Nb4=) 8.Nf3+/– Be7 (8...b6 9.Bd4 (9.Nd4 Ng4-+) 9...bc5 10.Bc5 Bc5 11.bc5 Qa5 12.Qd2 Qc5 13.d4+=) 9.Bd4 (< 9.Nd4 Ng4 10.Bg7 Rg8 11.Nc6 Nc6-/+) 9...0-0 (9...Nbd7 10.Nbd2+/–) 10.e3 Nbd7 11.h4 h6 12.Ne5 Ne5+= 13.Be5 Nh7 14.h5 Bf6 15.d4+/– Be5 16.de5 Qd1 17.Kd1 Rd8 18.Nd2 b6 19.Rc1+– b5 20.Ke1 a5 21.Ne4 ab4 22.ab4 Ra2 23.Nd6 Rb2 24.Rh4 f6 25.Bd3 f5 26.Rc2 Rb3 27.Rd2 Ng5 28.f3 Nf7+/– 29.Rd4 Nd6? 30.Rd6 Rd6 31.ed6 Bd7 32.Ke2 Rb4+/– 33.f4 Kf7 34.Ra2 Ra4 35.Ra4 ba4 36.Bc4 Kf6 37.g3 g5? 38.Kd3 gf4+/– 39.gf4 e5 40.Kc3+– ef4 41.ef4 1–0. lunsdale – uqmhrd (2085), net–chess.com, 2006.

4.c5 Be7 5.d4 c6 (5...0-0 6.Nf3=) 6.Nh3 (6.Nf3 Nbd7=) 6...0-0 (6...Nbd7 7.Bf4=) 7.g3 (7.Bf4 Nbd7=) 7...Re8 (7...a5 8.Qa4-/+) 8.Bg2 (8.Bf4 Nbd7=+) 8...Bf8 (8...a5 9.Bf4=+) 9.0-0= e5 (9...Nbd7 10.Bf4=) 10.de5 Re5 11.Bf4 (11.Nf4 b6=) 11...Re8=+ 12.Re1 (12.Nd2 b6 13.Nb3 bc5 14.bc5 Na6=+) 12...Nbd7 (12...b6 13.cb6 ab6 14.Qd4=+) 13.Nd2 Be7 (13...a5 14.Rc1=) 14.e4 Nf8 15.ed5 cd5 16.Ng5 Ng6=+ 17.Be3 h6 18.Ngf3+= Qc7 19.Bd4 Be6 20.Ne5 Ne5 21.Be5 Qc6 22.Nf3 Rad8 23.Nd4+/– Qc8 24.Qa4 Nd7 25.Ne6 fe6 26.Bf4 a6 27.Qb3 Bf6 28.Rac1 Nb8 29.Re2 Nc6= 30.Rce1 Nd4-/+ 31.Qa2 Ne2-+ 32.Re2 Kf8 33.Bh3 Qc6 34.Qd2? e5-+ 35.Bh6 gh6 36.Qh6 Kf7 37.Qh5 Ke7 38.Qh7= Kf8 39.Re3?? Re7 40.Qf5 Rf7 41.Qg6 Bg7 42.Qg4 Qf6 43.Re2 e4 44.Ra2 Qf3 45.Qf3 Rf3 46.Be6 Ke7 47.Bg4 Rc3 48.h4 Kf7 49.h5 Kf6 50.a4 Rb3 51.Be2 Rb4 52.c6 bc6 53.Ba6 c5 54.Bb5 Bh6 55.Bc6 d4 56.Be4 Ke5 57.Bc6 c4 58.a5 c3 59.a6 d3 60.a7 c2 61.Ra5 Kd6 62.Rd5 Kc6 63.Rd8 c1Q 64.Kg2 Ra4 65.a8Q Ra8 66.Ra8 Kb7 67.Rd8 d2 68.Rd7 Kc6 (68...Kc6 69.Rd4 d1Q 70.Rd1 Qd1-+) 0–1. gdraper (2035) – kostaspetidis (2105), net–chess.com, 2006.

4.cd5 Nd5 5.Bb2 Nd7 6.e4 N5f6 7.Nc3 Be7 8.d4 0-0 9.Nf3 c6 10.Bd3 Qc7 (10...Nh5 11.Bc1+=) 11.0-0 a5 12.b5 c5 13.e5 Nd5 14.Rc1 Nc3 15.Rc3 b6 16.a4 Rd8 17.Qc2 Bb7? (better is 17...h6!?+=) 18.Bh7+/– Kh8 19.Be4 Be4 20.Qe4 g6 21.Bc1 Kg7 22.Ng5 Bg5 23.Bg5 Re8 24.Rfc1 Rac8 25.Qf4 Kg8 (25...Kg8 26.Qh4 Qe5 27.de5 Rcd8 28.Rh3 f6 29.Qh7 Kf8 30.Bh6#) 1–0. clochard (2215) – lessmith (1800), net–chess.com, 2004.

4.cd5 Nd5 5.e4 Qf6 (5...Nf6!? 6.Nc3 c5+=) 6.d4+= Nb6 7.Bb2 Qg6 8.Nc3 Be7 9.Nf3 Bd7 10.Bd3 Qg2 (10...0-0 11.0-0+=) 11.Rg1+/– Qh3 12.Rg7 Qh6 13.Rg1 Bf8 (better is 13...Qh5!?+/–) 14.Bc1+– Qh5 15.Rg5 Qg5?? (15...Qh3+–) 16.Bg5 Rg8 17.h4 h6 18.Bf4 c6 19.Bc7 Na6 20.Bg3 0-0-0 (20...Bg7 21.Ba6 ba6 22.Qd3+–) 21.Ba6 ba6 22.Ne5 Be8 23.Na4 Bd6 24.Nd3 (better is 24.Qe2 Na4 25.Qa6 Kb8 26.Qa4 Bc7 27.Nc6 Bc6 28.Qc6 Bg3 29.fg3 Rg3+–) 24...Bg3 25.fg3 Rd4 26.Nac5 (26.Nb6 ab6 27.Qf3 Kb7+–) 26...Rg3 27.Kf2 Rh3 28.Qf1 Rh4 29.Kg3 Rh5 30.Qf6 Rg5 31.Kf3 Rd8 32.Qe7 Nd7 (32...Bd7 33.Qf7 a5 34.Ne6 Be6 35.Qe6 Kc7 36.Nf4+–) 33.Rd1 (better is 33.Nb7! Kb7 34.Qd8 f5 35.Qe8 fe4 36.Kf2 Kc7+–) 33...Rg8 34.Na6 f5 (34...Rg5 35.Rc1 f6 36.Kf2+–) 35.e5 (35.Qd6 fe4 36.Ke3 Rg3 37.Kf2 Rf3 38.Kg2 Rf2 39.Kf2 e3 40.Ke3 Kb7 41.Qc7 Ka6 42.Qc6 Nb6 43.Nc5) 35...Bh5 36.Kf2 Bd1 37.Qd6 Kb7 (37...Rg2 38.Kg2 Bf3 39.Kf3 Ne5 40.Qe5 Rd3 41.Ke2 Kd8 42.Qf6 Ke8 43.Qe6 Kf8 44.Qh6 Kf7 45.Kd3 Kg8 46.Qg5 Kf7 47.Qf5 Ke7 48.Qc5 Kf6 49.Qc6 Kf7 50.Nc5 Kg7 51.Qa6 Kf7 52.Qe6 Kg7 53.Qf5 a5 54.Ne6 Kg8 55.Qg6 Kh8 56.Qg7) 38.Qc7 Ka6 1–0. Szkodnikow_i_ofiar – JAY2PLAY, ChessWorld.net, 2015.

4.e3 c5 5.b5 a6 6.Bb2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 a6 6.c4).

4.e3 c5 5.b5 Bd6 6.Bb2 0-0 7.Nf3 Nbd7 8.d4 Qc7 9.Bd3 (better is 9.dc5 Bc5 10.cd5 Nd5 11.Bd3=) 9...cd4-/+ 10.Nd4 (10.cd5 de3 11.fe3 Nd5-/+) 10...dc4-+ 11.Be2 Nc5 (11...Rd8 12.Qc2 Nb6 13.Nd2-/+) 12.Nf3 (12.Bc4 e5 13.Nf3 Rd8-/+) 12...Nfe4 (12...Nce4 13.Qc2-/+) 13.0-0 (13.Qc2 Qa5 14.Nfd2 e5-/+) 13...Nb3 (13...Rd8 14.Qc2 Nd3 15.Nc3-/+) 14.Ra2=+ Bd7 (14...f6 15.Qc2 Ng5 16.Ng5 fg5 17.h3=) 15.a4 (15.Qc2 Nbc5 16.Qc4 e5=) 15...Rad8 (15...Rac8 16.Qc2 f5 17.Nc3-/+) 16.Nc3 (16.Qc2!? Nbc5 17.Nc3=) 16...Nf6-/+ 17.Qc2 Bc8 (17...Nd5 18.Nd5 ed5 19.Rd1=+) 18.Nd1 (18.Nb1 e5=+) 18...Na5 (18...e5 19.Qc4 Qc4 20.Bc4=+) 19.Bf6 gf6 20.g3 (20.Nc3 a6=+) 20...e5-/+ 21.Nc3 Bg4?? (better is 21...Be6-/+) 22.Nd5+- Qc8 23.Nf6 Kg7 24.Ng4 Qg4 25.Ne5! Qg5 26.f4 Qh6?? 27.Nc4 Nc4 28.Qc4 b6 29.a5 Bc5 30.Qc3 Kg8 31.Kg2 Rfe8 32.Rf3 Rc8 33.a6 Be3 34.Qb3 Bc5 35.Bc4 Qg7 36.Rd2 Re1 37.Rd7?? Rg1-+ 38.Kh3 Qh6 39.Kg4 Qg6 40.Kh4 Qf6 41.Kg4 h5! 42.Kh5 Qf5 43.Kh4 Qd7 44.f5 Qe7 45.Kg4 Qf6 46.h4 Rh1 47.Rd3 Re8 48.Bd5 Qg7 49.Kf3 Rhe1 50.Kg2 Qf6 51.g4 R8e2 52.Kh3 Re3 53.Bf3 Rd3 54.Qd3 Re3 55.Qd5 Qc3 56.Kg3 Qe1 57.Kf4 Re8 58.f6 Qh4 59.Be4 Qf2 60.Bf3 Be3 61.Kf5 Qg3 (62.Qf7 Kf7 63.Bd5 Kf8 64.Bc6 Qf4 65.Kg6 Qg4 66.Kh7 Qh5; 61...Qc2 62.Be4 Qc8 63.Qe6 Qe6) 0-1. michaelanthony - ncc_1701, ChessWorld.net, 2005.

4.e3 c5 5.b5 Bd6 6.Bb2 Nbd7 7.Nf3 e5 8.d3 d4 9.Be2 a6 10.0-0 ab5 11.cb5 0-0 12.a4 Nb6 13.Re1 Qc7 14.Nbd2 Ra5 15.Qc2 Bf5 16.Rec1 Qe7 17.e4 Be6 18.Ng5 Bd7 19.Nc4 Nc4 20.dc4 Ng4 21.Nf3 f5 22.Bd3 Nf6 23.Nd2 f4 24.Nb3 Ra7 25.f3 Be6 26.a5 Nd7 27.Qd2 Qe8 28.Re1 Qh5 29.a6 ba6 30.Ra6 Ra6 31.ba6 Qf7 32.Qa5 Bc4 33.Bc4 Qc4 34.Nd2 Qb4 35.Qa2 c4 36.Ba1 Rc8 37.a7 Qa3 38.Qa3 Ba3 39.Nc4 Bc5-+ 40.Bb2 Ba7 41.Rc1 d3 42.Kf1 Bd4 43.Ba3 Rc6 44.Nd6 Rc2 45.Rd1 Rf2 46.Ke1 Rg2 47.Rd3 Rh2 48.Nf5 Kf7 49.Nd4 ed4 50.Bd6 g5 51.Rd4 Ke6 52.Rd5 h6 53.Kf1 Nb6 54.Rd4 Rc2 55.Bf8-/+ Nc4 56.Bh6 Nd2 57.Rd2 Rd2 58.Bg5 Ke5 59.Bh6 Rd7 60.Ke2 Rh7 61.Bg5 Rh2 62.Kf1 Rh5 63.Bd8 Kd4 64.Bb6 Kd3 65.Bf2 Rb5 66.Bg1 Kd2 67.Bd4 Rb4 68.Bg1 Rb1 69.Kg2 Rb3 70.Kf2 Re3 71.Kg2 Ke2 0–1. Trokenheim,Marek (1800) – Deluchey,Jean_Philippe (1700), FICGS, 2008.

4.e3 c5 5.cd5 ed5 6.bc5 Bc5 7.d4 Bd6 8.Nc3 Ne4 9.Ne4 de4 10.Ne2 0-0 11.Ng3 f5 12.Qb3 Kh8 13.Be2 Na6 14.0-0 Nc7 15.Bd2 b6 16.Rfc1 Be6 17.Bc4 Bc4 18.Rc4 Bg3 19.hg3 Nd5 20.Rac1 Re8 21.Rc6 Qd7 22.Bb4 Re6 23.Re6 Qe6 24.Qc4 a5 25.Be1 Qf7 26.Qb5 Rd8 27.Rc6 h6 28.a4 Qh5 29.Rc1 Kh7 30.Bd2 ½–½. Carstens,Michael (2150) – Keber,Ernst, CM 2000 ESC, 2002.

4.e3 c6 5.Nf3 c5 6.bc5 Bc5 7.Bb2 0-0 8.d4 Bb6 9.Nbd2 Ba5 10.Be2 (10.Bd3 Nc6+=) 10...Ne4 (10...Nc6 11.0-0+=) 11.0-0+= Nd2 12.Nd2 Nc6 13.Bd3 g6 14.Rc1 Ne7 15.e4 dc4 (15...Bd7!?+=) 16.Nc4+/– Bc7 17.Qd2 Nc6 18.Be2 Na5 19.Qh6 e5? (19...Nc4!? 20.Rc4 Bd6+/–) 20.Ne3 (better is 20.Ne5 Nb3 21.Rcd1 Be5 22.de5+–) 20...Nb3?? (better is 20...ed4 21.Rc7 Qc7+–) 21.Rc7! (21.de5?! Nc1 22.Rc1 Be6+–) 21...Qc7 (21...Be6 22.Rb7 Nd4 23.Bd4 ed4+–) 22.Nd5 (22.Nd5 Qd6 23.de5 Qd5 24.ed5+–) 1–0. Nuechter,Christian (2295) – Pieleck,Rudi (1770), RSM2005 remoteschach.de, 2005.

4.e3 Be7 5.d4 0-0 6.Nc3 c6 7.f4 dc4 8.Bc4 b5 9.Bd3 a5 10.Bb2 (better 10.ba5!? Qa5 11.Bd2=) 10...ab4-/+ 11.ab4 Ra1 12.Qa1 Bb4 13.Nf3 Qa5 (13...Nd5 14.Kf2-/+) 14.Ke2 Nbd7 (14...Qd8!?=+) 15.Qa5= Ba5 16.Ra1 Bc7 17.Ba3 Re8 18.Ne4 Bb7 19.Nc5 Nc5 20.Bc5 Ra8 21.Ra8 Ba8 22.Ne5 Nd5 23.g3 f6 24.Nf3 g6 25.Kd2 Kf7 26.e4 Nb6 27.Kc3 Na4 28.Kb4 Nc5 29.Kc5 Ke7 30.e5 fe5 (30...f5 31.Nd2=+) 31.de5 Kd7 (31...Bb8 32.Kb6 c5+=) 32.Ng5+= h6 33.Nf7 g5 34.Nh6 gf4 35.gf4 Ba5 36.Ng4 Bd2 37.Nf6 (37.f5 ef5 38.Bf5 Kc7+/-) 37...Ke7= 38.Nh5 b4 39.Bc4 Bb7 40.h3 Kf7?? (40...Be3 41.Kb4 c5 42.Kb5+=) 41.Kd4?? (better 41.f5 Kf8 42.Be6+-) 41...Kg6= 42.Kd3 Bc3 (better 42...Bc1 43.Nf6 Bf4=+) 43.Ng3 Bc8 44.h4 Be1 45.h5 Kh6 46.Ne4 Kh5 47.Nd6 Bd7 48.Ke3 (48.Nb7 Bf2 49.Nd8 c5=) 48...Kg4 (48...Bh4!?=+) 49.Be2 Kg3 50.Bd1?? (50.Ne4 Kg2 51.Bc4 Bg3=) 50...Bc3?? (better 50...Bf2 51.Ke2 Ba7-+) 51.Ne4+= Kh4 52.Nc3 (52.Bb3!?+=) 52...bc3=+ 53.Kd3 Kg3 54.Kc3 Kf4 55.Kd4 Bc8 56.Bb3 Kf5 57.Bc4 Bd7 58.Bd3 Kf4 59.Bc4 Bc8 60.Bd3 Bb7 61.Bc4 Kf5 62.Bd3 Kg5 63.Bc4 Bc8 64.Kc5 Bd7 65.Kd6 Exerts pressure on the isolated pawn 65...Be8 (65...Kf5!?=) 66.Be6+= Kg6?? (66...Kf4!?+=) 67.Bc4 (better 67.Ke7 Kg5 68.Bf7 (68.Ke8?! Kf4=) 68...Bf7 69.Kf7+-) 67...Kf5+/- 68.e6 Kf6 69.e7 Kg7 70.Bd3 Kf6 71.Be4 c5 72.Bc6 (better 72.Bd5+/-) 72...c4?? (better 72...Bc6 73.e8Q Be8 74.Kc5=) 73.Be8 c3 (73...Kf5 74.Bd7 Kf4 75.e8Q c3 76.Qe5 Kf3 77.Bc6 Kf2 78.Qf4 Ke2 79.Bf3 Kf2 80.Bg4 Kg2 81.Qf3 Kg1 82.Bh3 c2 83.Qg2) 74.Ba4 (74.Bh5 c2 75.e8Q Kg5 76.Qg6 Kf4 77.Kd5 Ke3 78.Qg1 Kd2 79.Kd4 c1Q 80.Qf2) 74...Kf5 (74...c2 75.e8Q c1Q 76.Qe5 Kg6 77.Be8 Kh7 78.Qe7 Kg8 79.Qf7 Kh8 80.Qf6 Kh7 81.Bg6 Kg8 82.Qf7 Kh8 83.Qf8) 75.e8Q Kf4 (75...c2 76.Bc2 Kg4 77.Bd1 Kg3 78.Qe4 Kf2 79.Qf3 Kg1 80.Bb3 Kh2 81.Qf2 Kh3 82.Be6) 76.Qe5 Kf3 (76...Kf3 77.Bd1 Kf2 78.Qh2 Kf1 79.Bf3 c2 80.Qe2 Kg1 81.Qg2). Minister007 (2320) - zolpi (2370), Rated blitz game, lichess.org, 2020.

4.e3 Be7 5.cd5 ed5 6.Bb5 c6 7.Be2 0-0 8.Nf3 Bg4 9.0-0 Nbd7 10.d4 a6 11.Bb2 Bd6 12.Nbd2 Qe7 13.Bd3 Ne4 14.Qc2 f5 15.Rac1 Rae8 16.Qb3 Rf6 17.Rfe1 Rh6 18.h3 Bh3 19.gh3+= Nd2 20.Nd2 Qg5 21.Kf1 Rh3 22.Bf5? Qf5-+ 23.Ke2 Rh2 24.Rf1 Bg3 25.Rc3 Qg4 26.Kd3 Bf2 27.Kc2 Qe2 28.Rd1 Be3 29.Rd3 Nb6 30.Kb1 Bd2 31.R1d2 Qd2 32.Rd2 Rd2 (32...Rd2 33.Bc1 Rd4-+) 0–1. Jefferson,N. W – Taras,Iulian (2285), Romania – BCCA, 2007.

4.e3 g6 5.d4 Bg7 6.Nc3 c6 7.f4 0-0 8.Nf3 Ne4 9.Ne4 de4 10.Nd2 f5 11.Bb2 Bd7 12.Qb3 Be8 13.c5 Bf7 14.Bc4 Qe7 15.b5 Nd7 16.a4 Nf6 17.a5 Nd5 18.a6 (18.0-0!?+=) 18...Rfb8 19.ab7 Rb7 20.Ra5 cb5 21.Bd5 ed5 22.Rb5 Rab8 23.Rb7 Rb7 24.Qc3 Be8 25.0-0 Bc6 26.Ra1 Bf6 27.Ra5 Kg7 28.Qa3 g5 29.fg5 Bg5 30.Bc1 f4 31.Nf1 f3 32.gf3 ef3 33.Kf2? (33.Ng3 Qd7 34.Qa2 Kh8-/+) 33...Qf7 (33...Qe6 34.Qa2 Bh4 35.Ng3 Qh3 36.Kf3 Bg3-+) 34.Ng3 h5 35.e4 Bh4 (35...Bc1 36.Qc1 de4 37.Qg5 Kh7 38.Qh5 Qh5 39.Nh5 Rb2 40.Ke3 Rb3 41.Kf4 f2-+) 36.Qe3 Bg3 (better 36...Qe6!? 37.ed5 Qe3 38.Ke3 A) worse 38...Bd5 39.Nf5 (worse 39.Nh5 Kf7 40.Ra1 f2-+) 39...Kf8 40.Nh4 Re7 41.Kf2 Re2 42.Kf1+/-; B) 38...Bg3 39.hg3 Bd5=) 37.hg3+/- de4 38.Qh6 Kg8 39.Qc6? (better 39.Qg5 Qg7 40.Qg7 Kg7 41.Ra6-/+) 39...e3!-+ 40.Ke3 (40.Be3 Rb2 Decoy; 40.Ke3 Re7 Decoy (40...f2 Passed pawn)) 40...f2 41.Qc8 Kh7 42.Qb7 Qb7 (better 42...f1N 43.Kd3 Qb7-+) 43.Kf2= Qf7 44.Bf4 Qd7 (44...h4 45.Ra6 hg3 46.Kg3 Qg7 47.Kh2 Qd4 48.Ra7 Kg6 49.Bd6=) 45.Ke3 Qe6 46.Kd3 (46.Kd2!? a6 47.Ra3+=) 46...Qb3= 47.Ke4 Qc2 (better 47...Qb7!? 48.Ke3 Qb3 49.Kf2 Qb2 50.Kf1 a6=) 48.Ke5+/- Qe2? (better 48...a6+/-) 49.Kd6+- Qc4 (49...Qc4 50.Ra7 Kg6+-). Minister007 (2345) - Izard (2360), Rated blitz game, lichess.org, 2020.

4.Nf3 dc4 5.Nc3 c6 6.Bb2 b5 7.e3 a5 8.ba5 Qa5 9.d3 Nd5 10.Qc1 cd3 11.Bd3 Nc3 (11...Nd7 12.0-0 Nc5 13.Nd5 ed5 14.Bd4 Nd3 15.Qc6 Bd7 16.Qd5=) 12.Bc3 Ba3 13.Qd2 b4 14.Bg7 Rg8 15.Bb2 (15.Be5!?+=) 15...Rg2-/+ 16.Kf1 Rg8 (16...Rg4 17.Ne5 Qd5 18.Ng4 Bb2 19.Ra8 Qh1 20.Ke2+=) 17.Bh7 Qb5 (17...Rg4 18.Ne5 Qb5 19.Ke1-/+) 18.Ke1+= Bb2 19.Qb2 (19.Ra8? Bc3 20.Bg8 Ba6-+) 19...Ra1 20.Qa1 Rf8 21.Be4 f5 22.Nd4 Qe5 23.Bg2 Rg8 (23...Rg8 24.Bf3 c5-/+) 0–1. Inving,Yugi – Sternik,Ryszard (1875), FICGS, 2008. (=1.c4 Nf6 2.b4 e6 3.a3 d5)

4.Nf3 c6 5.cd5 cd5 6.Bb2 Bd6 7.e3 0-0 8.Qc2 Nc6 (8...a5 9.ba5 Nbd7 10.a6=) 9.Bd3= h6 10.0-0 Bd7 11.Rc1 Rc8 12.Nc3 e5 13.e4 (13.b5!? Ne7 14.Be2=+) 13...d4-/+ 14.Nd5 (14.Nb5 Nb4! 15.Qb3 Be6-/+) 14...Nb4! 15.Qb3? (15.Nb4 Rc2). DanielMartin – NathanStack, ChessWorld.net, 2004.

5.Bb2 Bd6 6.e3 0-0 7.Nf3 c6 8.Nc3 Bf5 9.Be2 Nbd7 10.Nd4 Bg6 11.f4 h6 12.0-0 a5 13.b5 c5 14.Nb3 a4-+ 15.Nc1 d4 16.N3a2 Qb6 17.Bc4 Rfe8 18.Qf3? Bh5 19.Qh3 de3 20.de3 Re4 21.Bd3 Re7 22.Ne2?? c4! 23.Bd4 Bc5 24.Bc4 Be2 25.Bc5 Qc5 26.Be2 Re3 27.Rac1 Qb6 (27...Qb6 28.Kh1 Rh3 29.gh3 Qe3-+; 27...Rh3?! 28.Rc5 Ra3 29.Rc2-+; 27...Re2 28.Rc5 Nc5 29.Nc3+/–) 0–1. Burns,Christopher John (2015) – Wang Puchen (2290), ch–NZL, 2007.

5.Bb2 Bd7 6.Nf3 a5=/+ 7.Nc3 ab4 8.ab4 Ra1 9.Qa1 Bb4 10.e3 c6 11.Be2 Bd6 12.0-0 0-0 13.Rc1 Bg4 14.h3 Bf5 15.Na4 Ne8 16.Nd4 Bc8=/+ 17.Bd3 f5 18.f4= Be7 19.Nc5 Rf6 20.Qb1 Nd6 21.Nb7 Nb7 22.Nf5+/– Rf5 23.Bf5 Bf5 24.Qf5 Nd6 25.Qe6+– Kf8 26.Be5 Nc4 27.Bb8 Qb8 28.Qc6 Ba3 29.Re1+– Nd2 30.Qd5 Qb2 31.Rd1 Bb4 32.Qf5 Kg8?? 33.Qc8 Kf7 34.Rc1 Ne4 35.Qb7 Kf6 36.Rc6 Nd6 37.Rd6 Bd6 38.Qb2 Kf7 39.Qb3 Kf8 40.Qd3+– 1–0. Teachers,K – Kok,Frans, Guernsey op, 1985.

5.Bb2 Bf5 6.e3 Nbd7 7.Nf3 Bd6 8.Nd4 Bg6 9.Nc3 c6 10.Be2 0-0 11.0-0 Ne4 12.Ne4 de4 13.f4 ef3 14.Nf3 Qe7 15.Qb3 Rae8 16.Bd4 c5 17.Bc3 Nb6 18.Bc4 Nc4=+ 19.Qc4 Be4 20.Kh1 b6 21.d3 Bf5 22.e4 Be6=+ 23.Qb5 Bd7 24.Qc4 Be6 25.Qb5= ½–½. Mantu,E – Kreuzer,Uwe, corr SOK–92–85, 1992.

5.d4 Bd6 6.Nc3 Be6 7.Bg5 a5 8.Qa4 Nbd7 9.Nb5 ab4 10.Nd6 cd6 11.Qb4 0-0 12.e3 Qb6 13.Qb6 Nb6 14.Bf6 gf6 15.Rb1 Nc4 16.Rb7 Ra3 17.Be2 Ra1 18.Bd1 Bg4 19.Ne2 Be2 (19...Rfa8 20.f3 Ne3 21.Kd2 Nc4 22.Ke1-/+) 20.Ke2 Rfa8 21.Kf3 Nd2 (21...R8a2!?-/+) 22.Kf4 Ne4 23.Rb2 Rc1 24.g3 Raa1 25.Bb3 Rh1 26.Bd5 Nf2 27.Rf2 Raf1 28.Rf1 Rf1 29.Bf3 f5! 30.h4 (30.Kf5 Rf3 Deflection) 30...Kg7 31.g4 fg4 32.Kg4 f5! 33.Kf4 (33.Kf5 Rf3 Deflection) 33...Kg6 34.Kg3 Rc1 35.Kf4 Rg1 36.e4 Rf1 37.ef5 Kf6 0–1. Poulsen,Rene (2080) – Bertel,Michael (1765), IECG, 2004.

5.d4 Bd6 6.e3 0-0 7.Bd3 Ne4 8.Be4 de4 9.Nd2 f5 10.Nc4 Be7 11.Bb2 Be6 12.Ne5 Nd7 13.Ne2 Ne5 14.de5 Qd1 15.Rd1 a5 16.b5 c5 17.Nf4 Kf7 18.Kd2 Rfd8 19.Kc3 b6 20.Ne6 Ke6 21.Kc4 a4 22.f4 g5 23.g3 h5 24.Bc3 Rd1 25.Rd1 Rd8 26.Rg1 h4 (better is 26...Rd3-/+) 27.g4 ½–½. Ertekin,Oguzhan – Baglan,Esat (2020), Kocaeli TUR, World Ch U20 (b), 2013. (=1.c4 Nf6 2.b4 e6 3.a3 d5 4.cd5 ed5)

5.d4 Be7 6.Nc3 0-0 7.Bf4 c6 8.e3 Bf5 9.Nf3 h6 10.Bd3 Bd3 11.Qd3 Nbd7 12.0-0 Nh5 13.Be5 f5 14.b5+/– Ne5 15.Ne5. tired rook – NathanStack, ChessWorld.net, 2004.

5.Nf3 Bd6 6.Nc3 0-0 7.Nb5 Nc6 8.Nd6= Qd6 9.Bb2 Bg4 10.b5 Na5 11.Bc3 Nc4 12.Bb4 c5 13.bc6+= Qc6 14.Bf8 Kf8 15.Qb3 Bf3 16.gf3 Rb8 17.e3 b5 18.d3 Na5?? 19.Qb4+– Kg8 20.Qa5 b4 21.Rd1 Qc3 22.Rd2 Qc1 23.Ke2 b3 24.Qa7 Rc8 25.Bh3 b2 26.Bc8 Qh1 27.Rb2 Qc1 28.Rb8 Qc2 29.Kf1 Qd3 30.Kg2 (30.Kg2 Ne8 31.Bf5+–) 1–0. Sternik,Ryszard (1875) – Hess,Volker, FICGS, 2008.

5.Nf3 Bd6 6.e3 0-0 7.Bb2 Bf5 8.Be2 Nbd7 9.0-0 c6 10.d3 h6 11.Nc3 a5 12.b5 c5 13.Re1 Re8 14.e4 Be6 15.ed5 Nd5 16.d4 c4 17.Rc1 N7b6 18.Nd5 Bd5 19.Ne5 Qc7 20.Bf3 Bf3 21.Qf3 Be5 22.de5 Na4 23.Bd4+= b6 24.e6 +/–. schaep1 – NathanStack, ChessWorld.net, 2004.

5.ba5 Ra5 6.Nf3 Bd7 (better is 6...dc4 7.Bc4 b5-/+) 7.Be2?? (better is 7.d4=) 7...Ba4-+ 8.Qa4 Ra4 9.Nc3 (9.cd5 Rg4-+) 9...Rc4 (9...Ra7!? 10.cd5 Nd5 11.0-0-+) 10.Bc4 dc4 11.0-0 Nbd7 12.Nd4 (12.Bb2 Nb6-+) 0-1. DanielMartin - weBNimzo, ChessWorld.net, 2004.

5.b5 c5 6.d4 dc4 (6...cd4 7.ed4 dc4 8.Bc4=) 7.Bc4 cd4 8.ed4 (8.Qd4 Qd4 9.ed4 Nbd7=) 8...Be7 (8...Bd6 9.Nf3=) 9.Nf3 0-0 (9...Nbd7 10.0-0=) 10.0-0 Nbd7 (10...b6 11.Nc3=) 11.Bb2 (11.Re1 Nb6 12.Bd3 Nbd5=) 11...Nb6 (11...b6 12.d5 ed5 13.Bd5 Nd5 14.Qd5=) 12.Bd3 Nbd5 13.g3 (13.Nc3 b6=) 13...b6 14.Ne5 (14.Qe2 Bb7=+) 14...Bb7 15.Nd2. dannyboy238 – NathanStack, ChessWorld.net, 2004.

5.b5 Nbd7 6.d4 b6 7.cd5 Nd5 8.e4 N5f6 9.f3 Bb7 10.Be3 c5 11.bc6 Bc6 12.Bd3 Be7 13.Nc3 Rc8 14.Nge2 0-0 15.0-0 Bb7 16.Qd2 e5 17.d5 Ne8 18.Rfb1 Nc5 19.g4 Nd6= 20.Ng3 g6 21.Bh6 Re8 22.Bb5 Nb5 23.Nb5 Ba6 24.Na7+= Rc7 25.Nc6 Rc6 26.dc6 Bd3 27.Rd1 Qc7 28.Rac1 Rd8 29.Qc3 Na4 30.Qb3 Nc5 31.Qb2 Na4 32.Qa1 Nc5 33.Rc3 Qc6= 34.Qc1 Qf6 35.Kg2 Ba6 36.Rd8 Bd8 37.Qd2 Qe7 38.Be3 Qc7 39.Qc2 Be7+= 40.Nf1 Qd8 41.Bg1 Ne6 42.Be3 Nd4 43.Qb2 Bc5 44.Ng3 Qe7 45.Bc1 Qf6 46.h4 Ne6=+ 47.Rc5 Nc5-/+ 48.Be3 Nd3 49.Qb6= Ne1 50.Kf2 Qf3 51.Ke1 Qg3 52.Kd2 Qg2 53.Kc3 Qe4?? 54.Qd8 Kg7 55.Bh6!! Kh6 56.Qf8 1–0. Laco,Giuseppe (2100) – Somogyi,I (2240), Wch–Seniors, Lignano Sabbiadoro ITA, 2005.

5.b5 Nbd7 6.d4 dc4 7.Bc4 Bd6 8.Nf3 0-0 9.Bb2 Qe7 10.Qc2 e5 11.0-0 e4 12.Nfd2 Bh2 13.Kh2 Ng4 14.Kg3 Ndf6 15.Rh1 Qd6 16.f4 ef3 (better is 16...Ne3!? 17.Ne4 Nc2 18.Nd6 cd6-/+) 17.Kf3+= Ne3! 18.Ne4 (18.Ke3 Qg3 Double attack) 18...Bg4 (better is 18...Nc2 19.Nd6 cd6-+) 19.Ke3= Ne4 20.Qe4 (20.Nd2 Qg3 21.Nf3-+) 20...Rae8-+ 21.Nd2 (21.Qe8 Qg3 22.Kd2 Qg2 23.Qe2 Be2 24.Be2 Qh1 25.Nc3-+) 21...Qg3 (21...Qg3 22.Nf3 Re4 23.Ke4 Qg2-+; 21...Re4 22.Ne4 Re8 23.Raf1 Qg3 24.Kd2 Re4 25.Bf7 Kf8 26.Bd5 Rf4 27.Bc1-+) 0–1. Parmet,Daniel (1640) – Sternik,Ryszard (1875), FICGS, 2008. (=1.c4 Nf6 2.b4 e6 3.a3 d5 4.e3 a5)

5.b5 Nbd7 6.d4 dc4 7.Bc4 Bd6 8.Nf3 0-0 9.Nc3 e5 10.Qc2 ed4 11.Nd4 Ne5 12.Be2 Re8 13.Bb2 c5 14.bc6 bc6 15.0-0 Bd7 16.Rfd1 Rb8 17.Rd2 Qe7 18.Nf5 Bf5 19.Qf5 g6 20.Qg5 Rb3= 21.Nd1 Ne4 22.Qe7 Be7 23.Rd4 Nc5 24.Rd2 Bf6 25.f4 Ned7+= 26.Bf6 Nf6 27.Rd6 Re6 28.Rd8 Re8 29.Re8 Ne8 30.Bf3 f5 31.Bc6 Nf6 32.Rc1 Nce4 33.a4 Kf8 34.Kf1 Ra3 35.Rc2 Ke7 36.h3 h5 37.Ke2 h4 38.Kf3 Ke6 39.Bb5 Nd5 40.Rc6 Ke7 41.Rg6 Ra2 42.Rc6 Rd2 43.Rc1 Nb4 44.Be2 Ke6 45.Bc4 Kf6=+ 46.Be2 Kg6 47.Rc4 Nc2 48.Re4 fe4 49.Kf2 Nb4 50.Ke1 Rd5 51.Bb5 Nc2-/+ 52.Ke2 Rd1 53.Kd1 Ne3 54.Kd2 Ng2 55.Bd7 Nf4 56.Ke3 Nd3 57.Bg4 Nc5 58.Kd4 Na4 59.Ke4 Nb6 60.Kd4 a4 61.Kc3 Nd5-+ 62.Kb2 Kg5 63.Bd7 Kf4 64.Ba4 Kg3 65.Bd7 Nf4 66.Kc3 Nh3 67.Kd4 Ng5 68.Ke5 ½–½. Deluchey,Jean_Philippe (1700) – Sternik,Ryszard (1875), FICGS, 2008.

5.b5 e5 6.Bb2 Bd6 7.d4=.

5.b5 Be7 6.Bb2 0-0 7.f4 dc4 8.Bc4 c5 9.Nf3 Nbd7 10.0-0 b6 11.Nc3 Bb7 12.d3 Qc7 13.Qe2 Rad8 14.e4 (better 14.Rad1!?=) 14...Qf4-/+ 15.Rf2 (15.Rae1!?-/+) 15...Ng4 16.g3 Qh6 17.Rg2 Qe3 18.Kh1 (18.Qe3 Ne3 19.Re2 Nc4 20.dc4 f5-+) 18...Bf6 (18...Qe2 19.Re2 Nde5 20.h3-+) 19.Re1 Qe2 20.Ree2 (better 20.Rge2 Nde5 21.Ne5 Ne5 22.Na4-+) 20...Nde5 21.Ne5 Ne5 (21...Be5?! 22.h3 Nf6 23.Na4 Bb2 24.Rb2-/+) 22.Na4 Nc4 23.Bf6 (23.dc4 Bb2 24.Nb2 Rd4-+) 23...gf6 (better 23...Rd3 24.Nb2 Nb2 (worse 24...gf6 25.Nd3 Na3 26.Kg1-+) 25.Bb2 c4-+) 24.dc4 Rd1 25.Rg1 Rd4 26.Rge1 f5 27.Nb6 Be4 (27...fe4?! 28.Kg1-/+; 27...Re4?! 28.Re4 Rd8 29.Na4 Be4 30.Kg1=) 28.Kg1 Rb8 29.Na4 Rc4 30.Nb2 Rd4 31.a4 Rb4 32.Rc1 Rc8 Black intends c4 33.Rc4 Bd5 34.Rf4 (better 34.Rc3-+) 34...c4 35.Nd1 c3 36.Rc2 Rb1 37.Rf1 Rc5 (better 37...Rb3-+) 38.Rc3 Rd1?? (better 38...Rc4 39.Ra3 Rcc1-+) 39.Rc5+/- Rd4 (better 39...Rd2 40.Rfc1 Rg2 41.Kf1 Rh2+=) 40.b6+- Rb4 41.Rb5 Ra4 42.Rd1 (better 42.Rd5 ed5 43.Rb1+-) 42...Rb4?? (42...Bb7 43.Rd7 Ra1 44.Kf2 Ra2 45.Ke3 Be4+-) 43.b7 (better 43.Rdd5 ed5 44.Rb4 ab4 45.b7+-) 43…Rb5-+ 0-1. Minister007 (2305) - EckhardSchmittdiel (2415), Rated blitz game, lichess.org, 2020.

5.b5 Be7 6.Nf3 0-0 7.Nc3 Nbd7 8.cd5 ed5 9.Bb2 Nc5 10.Be2 Bf5 11.d3 a4 12.0-0 c6 13.bc6 bc6 14.Nd4 Bd7 15.Qc2 Qa5 16.Rad1 Rab8 17.Nf3 Rb7 18.Rb1 Rfb8 19.d4 Nb3 20.Ne5 Be8 21.Bf3 Qa6 22.Rfe1 Nd7?? 23.Be2+/– Qb6 24.Na4 Qa5? 25.Nc6 Qa4 26.Ne7 Kf8 27.Nd5 Nf6 28.Nf6 gf6 29.Qh7 Nd2 30.d5 Ke7 31.d6! Ke6 32.e4! Nb1 33.Qf5 Kd6 34.Qf6 Kc7 35.Be5 Kc8 36.Rc1 Bc6 37.Rc6 Kd7 38.Bg4 Ke8 39.Qh8 (39.Qh8 Ke7 40.Bf6#) 1–0. Sternik,Ryszard (1875) – Cridland,Graham, FICGS, 2008.

5.Bb2 Be7 6.Bc4 Bd7 7.Ne2 a6 8.Nf4 c5 (8...b5 9.Be2=+) 9.0-0 (9.bc5!? Bc5 10.Nh5 Nh5 11.Qh5=) 9...b5=+ 10.Be2 cb4 11.ab4 Nc6 (11...Bb4 12.Nc3-/+) 12.Ba3 (12.Bf3 Bb4 13.Qc2 Qc7=+) 12...Bb4 13.Bb4 Nb4 14.Qb3 Nfd5 (14...a5 15.Bf3 Rc8 16.d4-/+) 15.Nd5 Nd5 (15...ed5? 16.Qb4 Qe7 17.Qd4+–) 16.e4 (16.d4 0-0=+) 16...Nb6 (16...Nf4 17.Nc3-/+) 17.Nc3 0-0 18.Bf3 (18.d4 Qf6-/+) 18...Nc4 (better is 18...e5-+) 19.d3? (better is 19.Rfd1-/+) 19...Nd2-+ 20.Qc2 Nf1 21.Kf1 Qb6 22.e5 Rac8 23.Qb2 b4 24.Ne4 Bb5 25.Be2 Rfd8 26.Nd6 Rd6 27.ed6 Qd6 28.Kg1 h6 29.Rd1 Rc3 30.g3 Bd3?? 31.Bd3?? Rd3-+ 32.Rd3 Qd3 33.Qb4 Qb5 34.Qe4 a5 35.f4 a4 36.h4 Qc5 37.Kg2 Qd5 (38.Qd5 ed5-+) 0–1. ahmed sharkawy_1 – Tricky Rabbitt, ChessWorld.net, 2005.

5.Bc4 c5 6.bc5+= Bc5 7.d4 Bd6 8.Ne2 (8.Nc3 0-0=) 8...0-0 9.Bb2 (9.Nbc3 Bd7=) 9...a6 (9...Qb6 10.Qb3=) 10.0-0= Qc7 11.Nd2 Bh2 12.Kh1 b5 13.Bd3 Bb7 (13...Bd6!?=) 14.Rc1+= Qd6 15.f3 (15.Nc3 Nbd7 16.Nce4 Be4 17.Ne4 Ne4 18.Be4 Rac8+/–) 15...e5= 16.g3?? (better is 16.Qb3 ed4 17.Nd4=) 16...Ng4-+ 17.e4?? (17.Ne4 Be4 18.Be4 Ne3 A) 19.de5?? A1) 19...Nd1?? 20.ed6 Nb2 21.Ba8+– (21.Kh2?! Nd7 22.Ba8 Ra8+/–); A2) worse is 19...Qd1 20.Rfd1 Nd1 21.Rd1+– (21.Ba8 Nb2 22.Kh2 Nc4-/+); A3) 19...Qh6 20.Qd6 g6-+; B) 19.Qe1-+) 17...Ne3 18.Qe1 Qh6 (18...Qh6 19.Rf2 Bg3 20.Kg1 Bh4-+) 0–1. simsim314 (1710) – zrenjanin (1980), gameknot.com, 2010.

5.Bc4 Bd6 6.Bb2 Bd7 7.Nf3 Nc6 8.0-0 a6 9.d4 0-0 10.Nc3 b5 11.Bb3 Re8 12.Re1 Nd5 13.Nd5+/– ed5 14.Bd5 h6? 15.Bc6?? Bc6+= 16.Rc1 Bf3 17.Qf3+/– Qh4 18.g3 Qh3 19.Qg2 Qg2+/– 20.Kg2 f6 21.Rc6 Kf7 22.e4 a5 23.ba5 Ra5 24.e5 fe5 25.de5 Ba3 26.Rc7 Re7 27.e6+– Kg8 28.Rc8?? Kh7+/– 29.Ba3 Ra3 30.Rd8 Ra6 31.Rb8 Rae6 32.Re6 Re6 33.Rb5 Rf6 34.f4 Kg6 35.Kf3 Rf5 36.Rf5+– Kf5 37.g4 Kf6 38.h4 g6 39.Ke4 Ke6 40.h5 g5 41.fg5 hg5 42.h6 Kf6= 43.h7 Kg7 44.Kf5 Kh7 45.Kg5 Kg7 46.Kf5 Kf7 47.g5 (47...Kg7 48.g6=). Chairboy – Tricky Rabbitt, ChessWorld.net, 2005.

5.Bc4 Bd6 6.d4=+.

5.Bc4 Bd7 6.Nf3 Bc6 7.b5 Bf3 8.Qf3+= Bd6 9.Qb7+/– Nbd7 10.Nc3 0-0 11.Qc6?? Ne5-+ 12.Qa8? Qa8 13.Bf1 Rd8 14.d4 Ng6 15.f3 Nd5 16.Nd5 Qd5 17.Be2 h6 18.0-0 Qh5 19.g3 Bg3 20.hg3 Qh3 21.Rf2 Qg3 22.Rg2 Qe1 23.Bf1 Nh4 24.Bb2 Qe3 25.Rf2 Rd5 26.Bg2 Ng2 27.Kg2 Rg5 28.Kf1 Qd3 29.Re2 Rg2! 30.Kg2 Qe2 31.Kg3 Qb2 32.Rg1 Qd4 33.Rg2 Qa4 34.Ra2 Qb5 35.a4 Qb3 36.Ra1 a5 37.Rc1 Qa4 38.Rc7 g5 39.Rc8 Kg7 40.Ra8 Qf4 41.Kf2 g4 42.Rd8 Qf3 43.Ke1 g3 44.Kd2 g2 45.Kc2 g1Q 46.Kb2 Qgg2 47.Kc1 Qg5 48.Rd2 Qc3 49.Kd1 Qgd2 (49...Qcd2?!=) 0–1. melr11 – Tricky Rabbitt, ChessWorld.net, 2005.

5.Bc4 Be7 6.Qc2 Nc6 7.Nf3 Bd7 8.Bb2 a6 9.0-0 b5 10.Bd3 0-0 (10...Bd6 11.Nc3+=) 11.Nc3 (11.Bf6!? Bf6 12.Ra2+/– (12.Bh7?! Kh8=)) 11...h6 12.Rac1 e5 (12...a5!? 13.Ne4 Nd5+=) 13.Ne4+/– Ne4?? (better is 13...a5 14.Ne5 Ne5 15.Be5 Nd5+–) 14.Be4+– Nb4 15.ab4 Rc8 16.Be5 Bd6 17.Qb2 Qe7 1–0. orangutanb4 (2050) – joipo01 (1765), kurnik, 2011.

4.Bb2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 Be7 4.c4).

4.Nc3 0-0 5.d4 b6 6.Bf4 Bb7 7.f3 d6 8.e4 h6 9.Qd2 Nc6 10.Nh3 Qc8 11.0-0-0 Nh5 12.Be3 Rd8 13.g4 Nf6 14.g5 hg5 15.Ng5 d5 16.ed5 ed5 17.Bh3 Qb8 18.c5 Bc8 19.Bc8 Qc8 20.h4 Qf5 21.Rdf1 Nh5 22.Rhg1 bc5 23.bc5 Na5 24.Qc2 Qc2 25.Kc2 Bg5 26.Rg5 g6 27.Rfg1 c6 28.Rh5 Nc4 29.Bc1 a6 30.Rhg5 Kh7 31.h5 Rg8 32.hg6 fg6 33.Rh1 Kg7 34.Rhg1 Kf6 35.f4 Rae8 36.f5 Ne3 37.Be3 Re3 38.Rg6 Rg6 39.Rg6 Kf5 40.Rc6 1–0. Chairboy – ahmed sharkawy_1, ChessWorld.net, 2005.

4.Nc3 0-0 5.Nf3 b6 6.g3 (6.e4 Bb7 7.e5 Ne4=) 6...Bb7 7.Bg2 h6 (7...a5 8.b5=) 8.0-0 d5 9.cd5 ed5 10.d4 Re8 11.Nh4 Bd6 (11...Qd7 12.Nf3=) 12.Nf5+= Ne4 13.Ne4 de4 14.e3 Qf6 15.Nd6 cd6 16.Bb2 d5 17.Qa4 Bc6 18.b5 Bd7 19.Qb4 (19.f3 Qg5 20.Qb3 Bf5+=) 19...a5 (19...a6 20.a4=) 20.Qb3 Be6 (20...Qg5 21.Rac1=) 21.a4 (21.f3 a4 22.Qc3 ef3 23.Rf3 Qg6+=) 21...Rc8 (21...Nd7 22.f3 Qg5 23.Rac1=) 22.Rac1 Rc1 23.Rc1 Nd7 24.Rc6 Nf8 (better is 24...Qf5!?=) 25.Rb6+/– Nd7 26.Rd6 Nf8 27.Qc3 Nd7 28.Qc7 Kh7 29.Rd7 Bd7 30.Qd7 Qe6 31.Qe6 fe6 32.Ba3 Rc8 33.Bc5 e5 34.b6 Rb8 35.f3 ef3 36.Bf3 e4 37.Bg4 g6 38.Be6 (38...Rb7 39.Bd5+–) 1–0. melr11 – ahmed sharkawy_1, ChessWorld.net, 2005.

4.Nc3 d5 5.cd5 ed5 6.e3 0-0 7.Bd3 a5 8.b5 c5 9.Nf3 d4 10.ed4 cd4 11.Ne2 Bg4 12.Ng3 Nbd7 (12...Re8 13.0-0 Qd5 14.h3 Bf3 15.Qf3 Qf3 16.gf3=+) 13.Be2 (13.0-0 Rc8=+) 13...d3 14.Bd3 Ne5 15.Be2 (15.Ne5 Qd4 Double attack (15...Bd1 Pinning; 15...Bd1 Deflection; 15...Qd4 Decoy)) 15...Bf3 16.Bf3?? (better 16.gf3 Bc5 17.0-0=+) 16...Nd3-+ 17.Kf1 (17.Ke2 Re8 18.Nf5 Qd7-+ (worse 18...Nc1 19.Rc1 Ba3 20.Ne3 Bc1 21.Qc1-+)) 17...Qd4 (17...Nc1?! 18.Qc1 Rc8 19.Qb2=) 18.Qe2 Qa1 19.Qd3 Qc1 20.Ke2 Qa3 (20...Qc8!? 21.Rb1-+) 21.Bb7 Qd3 22.Kd3 Rad8 23.Kc2 Bb4 24.d3 (24.Rd1 Ng4 25.Ne4 Rb8-+) 24...Rfe8 (24...Ng4 25.Rf1 Rd7 26.Be4-+) 25.Bc6 Re5 26.Rd1 Re1 0-1. Burns,Chris - van der Hoorn,Mark, NZL North Island Rapid, 2000.

4.d4 0-0 5.Nc3 d5 6.c5 c6 7.f4 Nfd7 8.Nf3 f6 9.g3 Re8 10.Bg2 Bf8 11.0-0 e5 (11...a5 12.ba5 e5 13.fe5 fe5 14.e3=) 12.e4 (12.fe5 fe5 13.e4 ed4 14.Nd4 a5+/-) 12...ed4 (12...a5!? 13.ed5 ab4=) 13.Qd4 de4 14.Ne4 a5 15.Bb2 b6 16.Nd6 (better 16.Qc4 Kh8 17.Nfg5+-) 16...Bd6+= 17.Qd6 bc5 18.bc5 Qe7 19.Qe7 (19.Rfe1!? Qd6 20.cd6+/-) 19...Re7+/- 20.Nd4 (better 20.Rfc1!?+/-) 20...Nc5= 21.Nc6 Nc6 22.Bc6 Rb8 23.Bc3 Ba6 (23...Bb7 24.Rab1 Ra8 25.Rb5=) 24.Rfe1 Rc7 (better 24...Re1!? 25.Re1 a4+/-) 25.Bd5+- Kh8 26.Ba5 Rd7 27.Be6 (27.Bc6 Rf7+-) 27...Rd3 (27...Ne6 28.Re6 Bc4 29.Re3+/-) 28.Bb4 Nb3 29.Rad1 Nd4 30.Rd3 Bd3 31.Rd1 Ne6 32.Rd3 Nc7 33.Kf2 h5 34.Ke3 Re8 35.Kd2 Ra8 36.Kc3 Kh7 37.Kc4 Kg6 38.Kc5 Ne6 39.Kc6 Rc8 40.Kb7 Re8 (40...Rc2!?+/-) 41.a4+- h4 42.a5 hg3 43.hg3 Rh8 (43...Nd8 44.Kb6 Ne6+-) 44.a6 Rh1 (44...Kf5 45.a7+-) 45.Rb3 (better 45.a7 Rh8+-) 45...Rc1 46.a7 Rc7 (46...Nd8 47.Kb6 Rc6 48.Kb5 Rc8+-) 47.Kb6 Rc8 48.Bd6 Nd4 49.Bb8 (49.Bb8 Nc6 50.a8R+-) 1-0. Minister007 (2345) - KineticKing (2380), Rated blitz game, lichess.org, 2021.

4.d4 0-0 5.Nf3 d5 (5...a5 6.b5=) 6.c5 (6.e3 a5 7.b5 Nbd7=) 6...b6 (6...a5 7.b5=) 7.e3 (7.Nc3 Ne4 8.Qc2 Nc3 9.Qc3 Nd7=) 7...a5=+ 8.Bb2 Ne4 (8...ab4 9.ab4 Ra1 10.Ba1=) 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 f5 (11...Nd7 12.Bb5=) 12.Be2+= Nc6 (12...Bd7 13.0-0+=) 13.Qa4 Qe8 (13...Nb8 14.0-0+=) 14.b5 Nd8 15.cb6 cb6 16.0-0 Nf7 17.Qa7 Nc3 18.Bc3 Qd8 19.Rc1 Bd6 20.Bb2 f4 21.ef4+/– Bf4 22.Rc3 Bd7+= 23.Ba3 Nd6 24.Qa4 Ne4 25.Rc2 Rf5 26.Bd3 Qb8 27.Qb4 Bd6= 28.Qb3 Bc7 29.Bb4 Rh5 30.h3 Bf4 31.Qa3 Rf5 32.Ra2 Bc8 33.Qa7 Qa7 34.Ra7 Rf7 35.Ra8 Rc7 36.g3 Ng5 37.Ng5 Bg5 38.Bc5! Bd8 39.Kg2 bc5 40.b6 Rc6 41.b7! Bb7 42.Rd8 Kf7 43.Rd7 Kf6 44.Rb7 cd4 45.Bh7 g6 46.h4 Rc1 47.f4 d3 48.Bg8 Kf5 49.Kf3 Rf1 50.Ke3 Kg4 51.h5 Rf3 52.Kd2 gh5 53.Be6 Kg3 54.f5 h4 55.Rg7 Kf4 56.Bd5 Rf2 57.Kd3 h3 58.Rh7 h2 59.Bc6 Kg5? 60.Be4 Ra2 61.Ke3 Ra3 62.Kd4 Kf4 63.Rh4 Kg3 64.Rh8 Kf4 65.f6 Ra4 66.Kc3 Ke4 67.f7 Ra3 68.Kc4 Ra4 69.Kb5 Ra8 70.Ra8 h1Q 71.f8Q Qh5 72.Kb4 (72.Kb4 Qg4 73.Qd6+–; 72.Qc5 Qe5+–) 1–0. schaep1 – weBNimzo, ChessWorld.net, 2004.

4.d4 a5 5.ba5 d5=+.

4.d4 b6 5.Bb2 Bb7 6.Nc3 0-0 7.Nf3 a5 8.b5 d5 9.e3 c5 10.bc6 Bc6 11.Ne5 Bb7 12.cd5 Nd5 13.Nd5 Bd5 14.f3 Bf6 15.e4 Bb7 16.Bb5 Ba6 17.Ba6 Na6 18.0-0 Be5 19.de5 Qd1 20.Rfd1 Rfd8 (20...b5!?=) 21.Rd6+= Nc5 22.Rad1 (22.Rb1 Rac8+/-) 22...Rdc8 (22...Nb7!? 23.Rd7 Kf8+=) 23.Rb6+/- h5 24.Kf2?? (24.Bd4 a4+/-) 24...Rd8?? (better 24...Na4 25.Bd4 Nb6 26.Bb6 a4-/+) 25.Rbd6 Rdb8 26.Bd4 Nb3 27.Bb6 a4 28.f4 (28.Kg3!? Rc8+/-) 28...Rc8 29.Kg3 Rc4 30.Kf3 Rac8 31.R1d3 (31.Be3 Rc3+/-) 31...Nc1 32.Re3 Rc2 33.f5 (better 33.Ba5+/-) 33...Rf2?? (better 33...Ra2+=) 34.Kf2+- ef5 (34...Rc2 35.Kf1 Nb3 36.Rh3+-) 35.ef5 Rc4 (35...Rc2 36.Kf3 Rc8+-) 36.e6 fe6 37.fe6 Rc8 38.e7 (38.Rd8 Rd8 39.Bd8 g5 40.e7 Kg7 41.e8Q Nd3 42.Rd3 Kh6 43.Qf7 h4 44.Rd6) 38...Re8 39.Rd8 Kf7 40.Re8 Ke8 41.Bc5 Nb3 White now must not overlook the idea Rf3 42.Bb4 Nd4 43.Rf3! Nf3 (43...Nf3 44.Kf3 Combination) 44.Kf3 g5 (44...h4 45.Kg4 Kf7 46.Kh4+-) 45.Ke4 (better 45.g4+- Kf8 e8=B+ Ke7) 45...g4 46.Kf5 g3 If Black now would get Kf6 in, he might survive 47.hg3 (47.h4). Minister007 (2350) - pjd223 (2305), Rated blitz game, lichess.org, 2020.

4.d4 d5 5.e3 0-0 6.Nc3 Nbd7 7.Nf3 b6 8.Bd3 (8.Be2 dc4 9.Bc4 Bb7 10.0-0 c5 11.bc5 bc5 8.Be2; 8.cd5 ed5 9.Qb3 c6 10.Bd3 Re8 11.0-0 a6 8.cd5 ed5) 8...Bb7 (8...c5 9.bc5 bc5 10.0-0=) 9.cd5 ed5 10.Qb3 (10.0-0 Re8=) 10...Rb8 11.b5 c5 12.bc6 Bc6 13.a4 Qc7 14.0-0 Rfc8 15.Ba3 Nf8 (15...Ba3 16.Qa3 Qb7 17.Nb5+/–) 16.Rfc1 Ng6 (16...Ba3 17.Qa3 Qb7 18.Nb5 Bb5 19.ab5 Rc1 20.Rc1+/–) 17.Bf5+– Rd8? (better is 17...Ba3 18.Qa3 Rf8+/–) 18.Bg6 hg6 19.Ne5 (19.Nb5 Qb7 20.Rc6 Qc6 21.Be7 Rdc8+–) 19...Ba3 20.Nb5 (20.Ra3?! Bd7+/–; worse is 20.Qa3 Qb7+–) 20...Qb7 (20...Qe5 21.de5 Bc1 22.Na7 Ba4 23.Ra4 Ne4+–) 21.Rc6 (21.Nc6?! Bc1 22.Nd8 Rd8 23.Rc1 Rc8 24.Rc8 Qc8+=; 21.Qa3?! Bb5 22.ab5 Ra8+–) 21...Bf8 22.Rc7 Qa6 23.Rf7 (23.Na7?! Bd6 24.Rf7 Be5 25.de5 Kf7+/–) 23...Rb7 24.Nc7 Qe2 (24...Rc7 25.Rc7 Bd6+–) 25.Nd5 Nd7 (25...Nd5 26.Rb7 Qa6+–) 26.Rd7 Rbd7 (26...Kh7 27.Nf6 Kh8 28.Ng6) 27.Nf6 (27.Nf6 Kh8 28.Ng6) 1–0. Trokenheim,Marek (1800) – Cridland,Graham, FICGS, 2008. (=1.c4 Nf6 2.b4 e6 3.a3 Be7)

4.g3 c5 5.b5 (5.bc5!? Bc5 6.d4=) 5...d5-/+ 6.cd5 Qd5 7.Nf3 b6 (7...c4 8.Nc3 Qc5 9.Bg2=) 8.Bg2= Bb7 9.0-0 Qd6 10.a4 0-0 11.d3 Nbd7 (11...a6 12.Bf4 Qd7 13.Ne5=) 12.Qc2 (12.Bf4 e5 13.Ne5 Bg2+=) 12...Nd5 13.Nc3 (13.a5 a6 14.ba6 Ra6=+) 13...Nb4 (better is 13...Nc3!? 14.Qc3 Bf6-/+) 14.Qd2 Bf6 15.Rb1 Ne5 16.Ne5 Bg2 17.Kg2 (17.Nf7 Rf7 18.Kg2 Bc3 19.Qc3 Nd5+=) 17...Qe5 18.Bb2 Qg5 (18...Qd6 19.Ne4 Qd5 20.Bf6 gf6 21.f3+=) 19.Qg5 Bg5 20.Ne4 Be7 21.Be5 Rfd8 22.Nd2 Nc2 23.Nc4 Nd4 24.Rfe1 f6 25.Bd4 cd4 26.Rec1 Rac8 27.Rc2 Bc5 28.Rbc1 Kf7 29.Nd2 f5 30.Nf3 Kf6 31.Rc4 g5? 32.Nd4!+/– e5 33.Nb3 Rd5 34.Nc5 Rdc5 35.Rc5 Rc5?? 36.Rc5 bc5 37.Kf3 g4 38.Ke3 Ke6 39.Kd2 Kd6 40.Kc3 h6 41.Kc4 h5? 42.a5+– f4 43.b6 ab6 44.ab6 fg3 45.fg3?? Kc6+/– 46.b7! Kb7 47.Kc5 (47...Kc7 48.Kd5+–) 1–0. 2good2be1 – BeerClark, ChessWorld.net, 2004.

4.g3 d5 5.cd5 ed5 6.d4-/+.

4.Bb2 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.c4).

4.e3 Bg7 5.d4 0-0 6.Bb2 Ne8 (6...a5 7.Nf3=) 7.Bd3+= b6 (7...d5 8.Nf3+=) 8.Nf3 c5 9.Nbd2 d5 10.0-0 dc4? (10...Nd7 11.Rc1+=) 11.Nc4 (better is 11.Be4!? Nc7 12.Ba8 Na8 13.Nc4+–) 11...Bb7 12.bc5 Bf3? 13.Qf3+– Nc6? 14.Qc6 Rc8 15.Qb7 bc5 16.Rad1 cd4 17.ed4 Nd6 18.Nd6 Qd6 19.Be4?? Rc7?? 20.Qb3+– Rfc8 21.a4 h6 22.Ba3 Qd7 23.Bc5 a6 24.a5 Qd8 25.Qh3 Kh7 26.Bb6 Qd6 27.Bc7 Rc7 28.Kh1 Bd4 29.f4 Qc5 30.Qh4 Bg7 31.Qg3 Qa5 32.Rb1 Qh5 33.Qf3 Qf3 34.Bf3 Rc4 35.g4 Rf4 36.Bb7 Rf1 37.Rf1 Bd4 38.Rf7 Kg8 39.Re7 e5 40.Ba6 g5 41.h3 Kf8 42.Rh7 Kg8 43.Rh6 Kg7 44.Rd6 Bc3 45.Rd5 Bd4 46.Kg2 Bc3 47.Kf3 Bb2 48.Ke4 Kf6 49.Rd6 Ke7 50.Rg6 Kf7 51.Rg5 Kf6 52.Rf5 Ke6 53.h4 Bc1 54.g5 Bf4 55.Rf6 Ke7 56.Bc4 Ke8 57.Rf4! Ke7 58.Bf7 (58.Bf7 ef4 59.Bc4+–; 58.Ke5 Kd7 59.g6 Kc6 60.g7 Kc5 61.g8Q Kb4 62.Bd5 Kc5 63.Qc8 Kb5 64.Qc6 Ka5 65.Ra4#) 1–0. BOKNOWS2 (1760) – villehartti (1800), Live Game Caissa's Web, 2007.

4.Nf3 d5 5.e3=.

4.Nf3 Bg7 5.Nc3 0-0 6.Qc2 b6 7.d4 Bb7 8.e4+= Re8 9.Be2 a5 10.b5 c5 11.bc6+/– Nc6 12.e5 Ng4 13.h3 Nh6 14.Ne4 Bf8? 15.Nf6+– Kh8 16.h4 Re7 17.h5 d5?? 18.cd5 Na7 19.hg6 fg6 20.Bh6 Bh6 21.Rh6 Rc8 22.Qg6 Rg7 23.Rh7 (23...Rh7 24.Qh7#) 1–0. salmo (1815) – the yid, internet, 2005.

4.a3 a5=+.

4.b5 Ne4=.

4.e3 0-0 5.d4 e5 6.de5 Nc6 7.Nd2 Ne5 8.Bb2 d6 9.Ngf3 a5 10.Ne5 de5 11.ba5 Bd7 12.Qc2= Bb4 13.Be5 Qe7 14.Bc3 Bc6 15.Bd3 Rfd8 16.Rd1 Bc3 17.Qc3 Bg2 18.Rg1 Bc6 19.h3 Rd6 20.Nb3 g6 21.Nd4 Qe5 22.c5 Rd7 23.Rc1 Nd5 24.Qd2 Qh2 25.Nf3 Qh3=+ 26.Ne5 Qh2 27.Rg5 h6 28.Nd7=+ hg5 29.Bf1 g4 30.a6 Qg1 31.Rb1? g3 32.fg3? Re8 33.a7? b5! 34.Rb3 Ne3 35.Nf6 Kf8 36.Qe2 Nc2 37.Kd2 Re2 38.Be2 Qe1 39.Kd3 Nb4 40.Rb4 Qb4 41.Nd7 Ke7 42.Nb8 Bh1 43.a8Q Ba8 44.g4 Qc5 45.Kd2 Qd4 46.Ke1 Qa1 47.Kd2 Qa2 48.Kd1 b4 49.Bd3 Qf2 50.Kc1 Qe1 (51.Kc2 Qc3 52.Kb1 Qd3 53.Kb2 Qc3 54.Kb1 Be4 55.Ka2 Qa3#) 0–1. Lonsdale,David Robert – Nemec,Zdenek, C01–04 www.b2–b4.com, 2004.

4.e3 0-0 5.d4 e5 6.de5 Nc6 7.ef6? Bf6 8.b5 Ne7-+ (< 8...Ba1 9.bc6 dc6 10.Qc2+=).

4.e3 0-0 5.d4 e5 6.de5 d6 7.Bb2 Bd7 8.Qb3 de5 9.Be5 Bf5 10.Nc3+= Nfd7 11.Bg3 a5 12.ba5 c6 13.e4 Nc5= 14.Qc2 Ne4 15.Ne4 Bb4 16.Ke2 Be4 17.Qe4 Re8 18.Be5 Ra5 19.f4 Qd2 20.Kf3 Ra3 21.Kg4 h5 22.Kh4 Qd8 (23.Kh5 g6 24.Kg4 f5 25.Qf5 gf5 26.Kf5 Qd7 27.Kg5 Be7 28.Bf6 Bf6 29.Kf6 Qg4 30.Re1 Nd7#) 0–1. Lonsdale,David Robert (1750) – Nemec,Zdenek (1885), CO7–01 www.b2–b4.com, 2005.

4.Bb2 Bb7 5.d4 Be7 6.Nd2 a5 7.b5 a4 8.Qc2 0-0 9.a3 c5 10.e3 d5 11.Ngf3 Nbd7 12.Be2 cd4 13.ed4 Qc7 14.Rc1 Rfc8 15.Qb1 Qf4 16.0-0 Bd6 17.Rfd1 Ne4 18.Ne4 de4 19.g3 Qh6 20.Ne5 Nf8 21.Ng4 Qg5 22.h4 Qe7 23.d5 f5 24.Nh2 ed5 25.cd5 f4 26.Bc4 e3 27.Nf3 ef2 28.Kf2 Qe3 29.Kg2 Rc4 30.Rc4 Qe2 31.Kg1 Qc4 32.Qf5 Qe2 0–1. Ponyi – Eperjesi, Salgo 1979.

4.Bb2 Be7 5.Qg3 0-0 6.a3 Bb7 7.d3 c5 8.bc5 bc5 9.Nd2 d5 10.cd5 ed5 11.Rb1 d4 12.e4 Nc6 13.Be2 Bd6 14.f4 Bc7 15.Nh3 h6 16.0-0 Bc8 17.Bf3 Rb8 18.Rfc1 Bb6 19.Nb3 Nd7 20.Nf2 Qe7 21.e5 Nd8 22.a4 f6 23.Bd5 Kh8 24.e6 Ne6+– 25.Re1 Bc7 1–0. marekt – Freyser, ChessWorld.net, 2004.

4.b5 d5 5.e3 Be7 ½–½. Argento1960 – NathanStack, ChessWorld.net, 2004.

4.bc5 Bc5 5.Bb2 0-0 6.d4 Be7 7.Nf3 Nc6 8.Nbd2 d5 9.c5 Bd7 10.Ng5 (10.Qb7? Rb8 11.Qa6 Rb2-+) 10...Rb8 11.Qc2 b6 12.e3 bc5 13.dc5 Nb4 14.Qb1 Ba4 15.Nb3 h6 16.Bf6 hg5 17.Bd4 Qc7 18.h4 e5 19.hg5 g6 20.Bc3 Bb3 (worse is 20...Bg5 21.Qb2 Nc6 22.Rd1=) 21.ab3 (21.Qb3 Nd3 22.Bd3 Rb3 23.ab3 Bc5-+) 21...Bc5 22.f4 Bd4 (22...Be3?? 23.Be5 Qe5 24.fe5+–) 23.Bd4 (23.Bb4 Ba1 24.Bf8 Qc3 25.Kd1 Rb3 26.Qd3-/+) 23...ed4-/+ 24.Qb2 Rfe8 25.Kf2 Qc2 (25...de3?? 26.Kf3 d4 27.Qd4+–) 26.Qc2 Nc2 27.Rd1 de3 28.Kf3 Rb4 (28...Rb4 29.Rd5 Nd4 30.Rd4 Rd4-+) 0–1. Vinke,S – Basic,Zvonimir, Yugoslavia M–class, 1980. (=1.c4 Nf6 2.b4 e6)

4.a3 d5 5.cd5 ed5 6.e3 Be7 7.Nf3 0-0 8.d4 Bg4 9.Be2 a6 10.Nbd2 h6 11.0-0 Ne4 12.Re1 Nd2 (12...Re8 13.Bd3 Bd6 14.Qc2 Nd2 15.Bd2 Bf3 16.gf3 Qg5 17.Kh1-/+) 13.Bd2 Be6 14.Rec1 Rc8 (14...Bd6!?=) 15.Ba6 Nd4 16.Nd4 ba6 17.Qd3 Qd6 (17...Ra8 18.Rc6+=) 18.Rc6+/- (18.Ne6?! fe6 19.Ra2 Bh4=) 18...Qd7 19.Qa6 Bd6 20.Rac1 Ra8 21.Qd3 Rfc8 22.Nb5 Qd8 23.Qc3 Qh4 24.Nd6 cd6 25.Qd4 Qd4 26.Rc8 Rc8 27.Rc8 Bc8 28.ed4 Bd7 29.Bf4 f6 30.Bd6 Kf7 31.f4 Ke6 32.Bc5 Kf5 33.g3 Ke4 34.Kf2 Kd3 35.Bf8 Kd4 36.Bg7 Kc4 37.Bf6 Kb3 38.Ke3 Ka3 39.Be7 Ka4 40.Kd4 Be6 41.Ke5 Bg8 42.f5 Kb5 43.g4 Kc4 44.Bc5 Bf7 45.h3 Bg8 46.h4 (46...d4 47.g5 hg5 48.hg5+-) 1-0. Argento1960 - Freyser, ChessWorld.net, 2004.

4.Bb2 Bb4 5.Nf3 0-0 (5...d6 6.a3 Ba5 7.e4-/+) 6.g3 (6.a3 Be7-/+) 6...d5 7.e3 (7.Bg2 Bd6 8.Na3 d4-/+) 7...Qe7 (7...dc4 8.Bc4 Bd6 9.Bb5-+) 8.Be2 (8.Bc3 Bc3 9.Nc3 dc4 10.Bc4 e5-+) 8...dc4 (8...Na5 9.Qc2 dc4 10.Bc4 Nc4 11.Qc4-+) 9.Bc4 Na5 (9...e5 10.Bc3-+) 10.Qc2 Nc4 11.Qc4 a5 12.0-0 b6 13.Nc3 Ba6 14.Nb5 Rac8 15.Qc6 Rfd8 16.Rfd1 Qc5 17.Qc5-/+ Bc5 18.Na7 Ra8 19.Nc6 Rf8 20.d4 Bd6 21.Nfe5 Be5 22.de5=+ Nd5 23.Rac1 Bb7 24.e4 Bc6-/+ 25.Rc6 Nb4 26.Rc7 Na2 27.Rd6 Rab8 28.Ba3=+ b5 29.Ra6 b4-/+ 30.Bb2 Ra8 31.Rca7 Ra7 32.Ra7 Nc3 33.Ra5 Ne4 34.Rb5= Nc3 35.Rb4 ½–½. pumpkin (2190) – mensa (2165), net–chess.com, 2005.

4.e3 d5 5.b5 (5.a3 dc4 6.Bc4 a5=) 5...dc4 (5...Na5!? 6.Qc3 Nc4 7.Bc4 dc4 8.Qc4 e5-/+) 6.Qc4=+ Ne5 7.Qc3 (7.Qc2 c5=) 7...Ng6 (7...Bd6 8.d4 Neg4 9.Bd3=+) 8.Bb2 (8.d4 Bd6=+) 8...Bd6 9.Nf3 0-0 10.g4 (better 10.Bd3!?=) 10...e5-/+ 11.g5 (11.h3 Be6-/+) 11...Ne4-+ 12.Qc2 Ng5 13.Be2 Nf3 14.Bf3 Rb8 15.h4 (15.d4 Bd7-/+) 15...Re8 (15...Be6 16.d4-+) 16.h5 Nf8 17.d3 Qf6 18.Nd2 Bf5 (18...h6 19.Be4-/+) 19.Ke2 (19.Ne4 Qh6-/+) 19...Ne6 20.Rag1 (20.Ne4 Be4 21.Be4 Nc5-/+) 20...Ng5 (20...Nc5 21.Ne4 Ne4 22.Be4 Be4 23.de4-/+) 21.Bg2 Bg4 (21...Qd8 22.h6 g6 23.Nc4-/+) 22.f3=+ Be6 23.Nc4 (23.h6 g6=+ (23...Ba2? 24.f4+-)) 23...Bc4 24.Qc4 h6 (24...Qe7!?-/+) 25.f4= Ne6 26.Bd5 (26.Rf1=) 26...Nf4 (better 26...c6 27.Be4 Rec8=+) 27.Kd2?? (better 27.Qf4! Qf4 28.ef4 ef4 29.Kf3 Re3 30.Kf2+/-) 27...Nd5-+ 28.Qd5 Qf2 29.Kc1 Qe3 30.Kb1 Bf8 (better 30...Re6!? 31.Rg4-+) 31.Rf1 Re7 (31...c6 32.Qf7 Kh8 33.Qg6-+) 32.Rf3 (32.Rf7 Rf7 33.Rf1 Qf4 34.Rf4 ef4-+) 32...Qd2 33.Rhf1 Kh8 34.Be5 (34.R3f2 Qe3 35.Rf7 Rf7 36.Rf7 Bd6-+) 34...Rbe8 (34...f6 35.Bf4 Re1 36.Re1 Qe1 37.Bc1-+) 35.Rf7 Rf7 (35...Re5?? 36.Rf8 Rf8 37.Rf8 Kh7 38.Qg8) 36.Rf7 Qe1 (36...c6 37.bc6 bc6 38.Qe4 Qd1 39.Kb2 Qh5 40.Rf5-+) 37.Kc2 Qe2 (37...Qe5?? 38.Rf8 Rf8 39.Qe5+-) 38.Kb3 Qd1 (38...Qe5?? 39.Rf8 Rf8 40.Qe5+-) 39.Kc4?? (better 39.Kb2 c6 40.bc6 bc6 41.Qe4 Qh5 42.Rf5-+) 39...Qc2 (39...Qh5?? 40.Bg7 Bg7 41.Qh5+-) 40.Bc3 (40.Kd4 Bc5!! 41.Qc5 Rd8 42.Bd6 Rd6 43.Qd6 cd6 44.Rf5-+) 40...Qa2 (40...Qa4 41.Bb4 Qb4) 41.Kd4-+ c5?? (better 41...Qe2 42.Qd7 c5 43.bc6 bc6 44.Rf8 Rf8-+) 42.bc6-/+ Qd5 (better 42...Qa4 43.Qc4 Qd1 44.Rf8 Rf8 45.cb7 Qg1 46.Kd5 Rd8 47.Ke4 Qg4 48.Ke3 Qg5 49.Ke2 Qh5 50.Kd2 Qh2 51.Kd1 Qh1 52.Kd2 Qg2 53.Kc1 Qb7-+) 43.Kd5= bc6 44.Kc4 (44.Kc6 Rc8 45.Rc7 Rc7 46.Kc7 Kh7=+) 44...a6 (44...Ra8 45.d4-/+) 45.Ra7 Kg8 46.Ra6 Re6 47.Ra7 g6 48.hg6 Rg6 49.Ra5 Rg5 50.Ra6 Rc5 51.Kd4 Rd5 (51...h5 52.Ra8 Kg7 53.Rd8-/+) 52.Kc4=+ Rd6 53.Bb4 Rf6 54.Ra8 h5 55.Bc3 (55.Rc8!?=+) 55...Rf4-/+ 56.Kb3 h4 57.Ra2 (57.Be5 Rf5 58.d4 h3-/+) 57...Rf3 58.Rh2 h3 59.Be5 (better 59.Kc4-+) 59…Rd3 (59...Rd3 60.Kc4 Rd5-+) 0-1. skyvodkachess (2395) - amaidel (2440), Rated Blitz game, lichess.org, 2016.

4.g3 Bb4-+ 5.Bg2. Freyser – DynamicPossibilities, ChessWorld.net, 2004.

4.Na3 Be7 5.Nf3 0-0 6.Bb2 dc4 7.Nc4 Nd5 8.b5 Nd7 9.d4 Bf6 10.e3 Ne7 11.Bd3 c5 12.bc6 Nc6 13.0-0 Re8 14.Nd6 Rf8 15.Rfc1 Qb6 16.Ne4 Be7 17.Bb5 Na5 18.Qa4 Nf6 19.Nf6 Bf6 20.Ba3 Rd8 21.Rab1 1–0. Coppin,W – Robinet,P, Club Championship (Windsor, Canada), 1984.

4.e3 a6 5.c5 a5 6.b5 (6.d4!?+=) 6...Bc5-/+ 7.a4 0-0 8.d4 Bb4 9.Nc3 Ne4 10.Bb2 c5 11.Rd1 (11.bc6 bc6 12.Nf3 Qb6-/+) 11...Nd7 (11...e5 12.de5 d4 13.ed4 cd4 14.Qb4 ab4 15.Ne4-+) 12.g3 (12.Qc2-+) 12...Nb6 13.f3 (13.Nge2 Qf6 14.f4 Nc4-+) 13...c4 14.Qc2 Nc3 15.Bc3 Na4! 16.Bd2 (16.Qa4 Bc3 Deflection (16...Bc3 Overloading)) 16...Nb6 17.f4 Bd7 18.Nf3 Bb5 19.h4 (19.Ng5 g6 20.Ra1-+) 19...Ba4 20.Qb2 (20.Qa2 Bd1 21.Kd1 Qd6-+) 20...Bd1 21.Kd1 Qd6 (better is 21...c3 22.Qb3 cd2 23.Nd2-+) 22.Bh3 (22.Qc2 Rfc8-+) 22...Na4 (22...Na4 23.Qc2 b5-+) 0–1. nay (2100) – iozeph (2630), net–chess.com, 2014. (=1.c4 Nf6 2.b4 e6 3.Qb3 d5)

4.Nf3 dc4 5.Qc4 Bd6 6.Nc3 Nc6 7.b5 Nb4 8.Qb3 Nbd5 9.Bb2 0-0 10.g3 a6 11.Bg2 Nc3 12.Bc3 ab5 13.Qb5 Nd5 14.Be5 Bd7 15.Qb7+= Be5 16.Ne5 Qf6 17.Qb2?? Rfb8 18.Qd4 Rb4 19.Qb4 Nb4 20.0-0 Rd8 21.d4 Nc2 22.Rad1 Bb5 0–1. Cridland,Graham – Parmet,Daniel (1640), FICGS, 2008.

4.Bb2 0-0 5.Nf3 d5 6.c5 a5 7.a3 b6 8.d4 a4 9.Qc2 Ne4 10.e3 Nd7 11.Bb5 Ndf6 12.Ne5 Bb7 13.f3 bc5 14.dc5 Ng5 15.h4 Nf3 16.gf3 Nh5 17.Qf2 f6 18.Nc6 Qe8 19.Ne7 Qe7 20.Nc3 d4 21.ed4 Nf4 22.0-0-0 c6 23.Bc4 Kh8 24.Rhe1 Rfd8 25.Qd2 Qc7 26.Be6 Ba6 27.Bf5 Bc4 28.Re3 g6 29.Bc2 Bb3 30.Ne4 Bc2 31.Qc2 Nd5 32.Red3 Qf4 33.Qd2 Qh4 34.Nd6 Rd7 35.Kb1 Re7 36.Nc4 Rae8 37.Qc2 Re2 38.R3d2 Qf2 39.Nb6 Rd2 40.Rd2 Re1 41.Ka2 Qf3 42.Na4 Ne3 43.Qb3 Qf1 44.Nb6 Kg7 45.d5 cd5 46.Qd3 Qh1 47.Nd5 Nd5 48.Qd5 Qf1 49.Qd4 Kh6 50.Qh4 Kg7 51.Rf2 Qa6 52.Rf6 (52...Qe2 53.Rd6 Qb2 54.Kb2 Rf1 55.Rd7 Rf7 56.Qd4 Kh6 57.Rf7 Kh5 58.Rh7 Kg5 59.b5 Kf5 60.Rf7 Ke6 61.Rf8 g5 62.Qd6#) 1–0. Eckhoff,Karlheinz – Nikolic,Stanimir (2300), Finkenstein op, 1998.

4.Bb2 0-0 5.Nf3 d6 6.g3 a5 7.a3 e5 8.b5 a4 9.Qc2 e4 10.Ng5 d5=+ 11.cd5 Qd5 12.Nh3? e3 13.Rg1 Bf5 14.Qc7 Bb1 (14...Bb1 15.fe3 Bd6-+) 0–1. Cridland,Graham – Deluchey,Jean_Philippe (1700), FICGS, 2008.

4.Bb2 c6 5.Nf3 d5 6.e3 h6 (6...0-0 7.Bf6 Bf6 8.d4=) 7.Na3 (7.Bf6 Bf6 8.d4 a5=) 7...0-0 8.Bd3 dc4 (8...Nbd7 9.0-0=+) 9.Nc4= b5 (9...Nd5 10.a3=) 10.Na3 (10.Nce5 Qd5=) 10...Bb7 (10...a5 11.ba5 Nbd7 12.Be2-/+) 11.Rc1 (11.0-0 Na6=+) 11...Nbd7 (better is 11...a5 12.Bf6 gf6=+) 12.Nd4? (12.Nc2 a5 13.a3 Rb8=) 12...Nd5 (12...c5 13.Ndb5 cb4 14.Nc7-+) 13.Nc6? (better is 13.Bb1=) 13...Bc6-+ 14.Nb5? Nb4 15.Qc3 f6 16.Qc4 Bd5 17.Qg4 Nd3 18.Ke2 Nb2 19.Nc7 Bc4 20.Rc4 Nc5 21.Ne6 Qd3 22.Ke1 Ne6 23.Qe6 Kh8 24.Rc1 Bb4 25.f4 Qd2 (25...Qd2 26.Kf1 Nd3 27.Qg8 Kg8 28.f5 Qf2#) 0–1. markmooney – Mokolato, internet, 2006.

4.Nf3 0-0 5.e3. Argento1960 – DynamicPossibilities, ChessWorld.net, 2004.

4.Nf3 d5 5.e3 0-0 6.Bb2 Nc6 (6...a5 7.ba5 Nc6 8.a6 Ra6 9.c5=+) 7.a3 Qd6 (7...a6 8.c5=) 8.c5 Qd7 9.d4 a6 10.Nc3 b6 11.Be2 Rb8 12.Qc2 bc5 13.bc5 Re8. alaamattar (2200) – rgiarrocco (2245), net–chess.com, 2004.

4.a4 d5 5.Na3 ab5 (5...Ne4 6.Bb2 (6.Nf3 Bc5 7.e3 0-0 8.Bb2 Nd7 9.Bd3 Bd6 10.ba6) 6...ab5 7.ab5 Nd7 8.cd5 ed5 9.Nf3 Bc5 10.e3; 5...Bc5 6.Nf3 (6.d4 Ne4 7.Nf3 Bb4 8.Bd2 Nd2 9.Nd2 ab5 10.cb5) 6...ab5 7.Nb5 Ne4 8.e3 0-0 9.Be2 c6 10.Nc3) 6.cb5 (6.ab5 Ne4 7.Bb2 Bc5 8.e3 0-0 9.Nf3 Nd7 10.Nc2) 6...c5 (6...Bd6 7.Nf3-/+ e5 (7...Nbd7 8.Nb1 0-0 9.Qc2 Nc5 10.Nc3) 8.Bb2 Nbd7 (8...e4 9.Nd4 0-0 10.g3) 9.Nc2 0-0 10.Ne3; 6...Ne4 7.Nf3 Nd7 8.Bb2 Nb6 9.Bd4 f6 10.Nc2) 7.Nf3 (7.bc6 Nc6 8.Bb2 (8.Nf3 Ne4 9.Nb5 Be7 10.Ba3) A) 8...Ne4 9.e3 e5 (9...d4 10.Bd3) 10.Nf3; B) 8...Bc5 9.e3 0-0 10.Nb5; C) 8...e5-/+ 9.e3 (9.Nf3 Ne4 10.e3) 9...Bb4 10.Bb5) 7...Bd6 (7...Nbd7 8.g3 Bd6 9.Bg2 0-0 10.0-0) 8.Bb2 Nbd7 9.g4 (9.Nc2 A) 9...Nb6 10.Ne3-/+ (10.Be5); B) 9...0-0-/+ 10.d3-/+ (10.Ne3); 9.Bc3 e5 (9...0-0 10.d3) 10.d3; 9.g3 0-0 10.Bg2) 9...e5 (9...0-0 10.Nc2-+ (10.Rg1-+)) 10.h3 (10.g5 Nh5 11.e4 0-0-/+) 10...0-0 (10...e4 11.Nh4 Nb6 12.Nb1-+) 11.Bg2 (11.Nc2 e4 12.Nh4 Nb6-+) 11...e4 12.Nh4 Nb6 13.a5 (13.Qc2 Ne8 14.Nf5 Bf5 15.gf5 Na4-+) 13...Ra5 14.Bc3 (14.Qc2 Re8-+) 14...Ra8 15.d3 (15.Nc2-+) 15...ed3 16.ed3 d4 (16...Re8 17.Kf1-+) 17.Bd2 Re8 18.Kf1 Nfd5 19.Nf5 Bf5 (19...Bf4 20.Bf4 Nf4 21.Ng3-+) 20.gf5 Qd7 21.Qg4 (21.Nc4 Ra1 22.Qa1 Nc4 23.dc4 Nb6-+) 21...Nf6 (better is 21...Qb5! 22.Bd5 (22.Nb5?? Ra1 23.Qd1 Rd1 24.Be1 Rde1) 22...Qd3 23.Kg2 Nd5 24.Bh6-+) 22.Qf3 (22.Qd1 Ra7 23.Rg1 Rea8-+) 22...c4 (better is 22...Qb5 23.Bc1 Qa5-+) 23.dc4 (23.Qb7 Qf5 24.Qf3 Qf3 25.Bf3 Ra3 26.Ra3 Ba3 27.Ba5-+) 23...Nc4 24.Bc1 (24.Bg5 Qb5 25.Kg1 Ra3 26.Ra3 Na3-+) 24...Ra3 25.Ba3 Nd2 (25...Nd2 26.Kg1 Nf3 27.Bf3 Qf5 28.Bd6 Qf3-+) 0–1. Accardo,Francesco (1865) – Rosato,Luciano (2275), 5th Napoli Vomero Natale op, 2009.

4.ba6 Ra6 5.Bb2 c5 (5...d6 6.Nc3=+) 6.e3 Qb6 7.Qc2 Nc6 8.a3 Be7 9.Nc3 Qd8 10.Nf3 0-0 11.Be2 Ng4 (11...d6 12.0-0=) 12.h3 Nf6 13.0-0 b6 14.d4 Bb7 (14...cd4 15.ed4 Ra5 16.Na4=) 15.d5+= Na5 16.e4 d6 17.Rfd1 e5 18.Rab1 Bc8 19.Ba1 (19.Nb5 Bd7+=) 19...Nh5+/– 20.Nh2 (better is 20.Ne5!? de5 21.Bh5 Nc4 22.Nb5 Na3 23.Na3 Ra3 24.Be5+/–) 20...Nf4= 21.Bf1 Bh4 (better is 21...f5!?=+) 22.g3+= f5? (22...Nh3 23.Bh3 Bh3 24.gh4 Qh4 25.Kh1=) 23.gh4 (better is 23.gf4!? fe4 A) 24.Qe4 Rf4 25.Qg2 Rf2-/+ (25...Nc4?! 26.Bc4 Rc4 27.Nb5=); B) 24.fe5 Rf2 25.Qe4+–) 23...Qh4+/– 24.Nf3 (24.Nb5 Nb7 25.Nf3 Nh3 26.Bh3 Qh3=+) 24…Qh5 (25.Nd2 fe4 26.Nce4 Bf5+/–). Gross,Wilhelm – Merten,Rainer, xix/24, 1990.

4.Nc3 Bb4 5.Ba3 Ba3 6.Qc2 Bb4 7.Nf3 Bc3 8.Qc3 ab5 9.cb5 0-0 10.h4 d5 11.e3 c5 12.Qc5 Ne4 13.Qc2 Nd7 14.Ng5 Ndf6 15.a4 Bd7 16.Bd3 h6 17.Nf3 Qa5 18.0-0 Rfc8 0-1. Davss (2220) - mojkovac (1940), Rated Classical game, lichess.org, 2014. (=1.c4 Nf6 2.b4 e6 3.b5)

4.Nf3 ab5 5.cb5 b6 6.e3 Bb7 7.Be2 Be7 8.0-0 0-0 9.Bb2 d6 10.a4 c5 11.bc6 Bc6 12.Nc3 Nbd7 13.Nd4 Bb7 14.f3 d5 15.f4 Nc5 16.Ncb5 Bc6?? 17.Nc6+– (17...Qd7 18.Ne5+–) 1–0. marekt – 2good2be#1, ChessWorld.net, 2004.

4.d3 Bb7 5.e4 c5 6.Bb2 d6 7.Nd2 Nbd7 8.Ngf3 e5 9.Be2 Be7 10.0-0 h6 11.Ne1 g5 12.a4 a5 13.Nc2 Nf8 14.Ne3 Bc8 15.Ra3 Ng6 16.Re1 Be6 17.Nd5 Nf4 18.Bf1 Bd7 19.Qa1 Ng6 20.Nf3 Nd5 21.ed5 f6 22.Nd2 Qc7 23.Qd1 h5 24.Ne4 0-0-0 25.Qd2 h4 26.Rb3 Bf5 27.Bc1 Rdf8 28.Qb2 Kb7 29.Bd2 Ra8 30.Qc1 Nf4 31.Kh1 Bd7 32.f3 f5 33.Nf2 Rh7 34.Qb1 Bf6 35.Nd1 Ng6 36.Ne3 Rg7 37.d4 cd4 38.Nf5 Bf5 39.Qf5 Qd8 40.Bd3 Nf8 41.Qe4 Nd7 42.Rbb1 Nc5 43.Qe2 Na4? 44.Bf5 Nc5 45.Bc1 Na4 46.Qc2 Nc5 47.Ba3 Rc7 48.Rf1 Be7 49.Rbe1 Nd7 50.Bd3 Rac8 51.Rc1 Qf8 52.Rf2 Nc5 53.Kg1 Qg7 54.Bc5 dc5 55.Bf5 Rf8 56.Ra1 Bd6 57.Qe4 Qf6 58.Bg4 Kb8 59.Qe1 Ra7 60.Rfa2 Bc7 61.Qb1 Qd8 62.Be6 Qf6 63.Ra5 Ra5 64.Ra5 Kb7 65.Ra6 Bb8 66.Bd7 Kc7 67.Bc6 g4 68.d6 Kd8 69.Rb6 Bd6 70.Qa2 Ke7 71.Bd5 Rc8 72.Qa6 gf3?? 73.Qc8 f2 74.Kf1 1–0. Zimmermann,J – Voigt,M, Eintracht, 2002.

4.e3 Bb7 5.Nf3 a6 6.Nc3 ab5 7.Nb5 Be7 8.Bb2 0-0 9.d4 d6 (9...Ne4 10.Qb3=+) 10.Bd3= Nbd7 11.0-0 c6 12.Nc3 e5 (12...d5 13.Qc2=) 13.Qc2 Re8 14.Ng5 (14.Ne4 ed4 15.Nd4 c5+=) 14...h6 15.Nge4 ed4 16.ed4 Ne4 17.Ne4 d5 18.Nd2 Bf6 (18...Bd6 19.cd5 cd5 20.a4=+) 19.Bh7 Kh8 20.Bf5 (20.cd5 cd5 21.Bd3 Ba6=) 20...Nf8 21.cd5 cd5 22.Rfe1 Ne6 23.Be6 fe6 24.Rac1 Ra2=+ 25.Nf3 Qb8 26.Qb3 Ra6 27.Ra1 Ra1 28.Ba1 Bc8 29.Qb5= Re7 30.Ne5 Be5 31.Re5 Bd7 32.Qd3 b5 33.Bb2 b4 34.f4 Re8 35.Qg6 Rf8 36.g3 b3 37.Qd3 Rc8 38.f5 ef5 39.Re7? Qd6 40.Qe3 f4! 41.gf4 Rf8 42.Qe5 Qe5?? 43.fe5?? Bb5 44.Rb7-/+ Bc4 45.e6 Re8 46.e7 Kg8 47.Rb8?? Rb8-+ 0–1. gtate (1730) – kerger (2015), net–chess.com, 2002.

4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 a6 8.d4 (8.Bb2 d5 9.d3 ab5 10.cb5 c5 11.Qc2 Nbd7 12.a4 Bd6 13.Rc1+=; 8.Nc3 d5 9.d4 dc4 10.Bc4 ab5 11.Bb5 Ra5 12.Bb2 Bd6 13.Qe2=; 8.Ba3 Ba3 9.Na3 Qe7 10.Qb3 e5 11.d4 ed4 12.Nd4 ab5 13.Nab5+=) 8...Ne4 9.Qc2 ab5 10.cb5 f5 11.Nc3 Bb4 12.Bb2 Nc3 13.Bc3=.

4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 c6 8.Ba3 (8.Nc3 d5 9.d3 a6 10.Bb2 dc4 11.dc4 Qc7 12.Bd3 Rd8 13.Qe2+=; 8.Bb2 d5 9.d3 a6 10.Nc3 dc4 11.dc4 Qc7 12.Bd3 Rd8 13.Qe2+=; 8.d4 cb5 9.cb5 a6 10.Nc3 ab5 11.Nb5 d6 12.a4 Qd7 13.Bb2=) 8...d6 9.d4 cb5 10.cb5 a6 11.Nc3 ab5 12.Qb3 Nc6 13.Nb5=.

4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d4 (8.Ba3 c5 9.bc6 Nc6 10.Be7 Qe7 11.d4 dc4 12.Bc4 Rac8 13.Qe2+=; 8.cd5 Bd5 9.Nc3 a6 10.Nd5 Qd5 11.Nd4 Bd6 12.Bf3 Qe5 13.g3=; 8.d3 a6 9.Bb2 ab5 10.cb5 c5 11.bc6 Nc6 12.Qb3 Na5 13.Qc3=) 8...Nbd7 (8...a6 9.Ba3 dc4 10.Be7 Qe7 11.Bc4 Rc8 12.Nc3 ab5 13.Bb5+=) 9.Bb2 (9.Ba3 c5 10.bc6 Bc6 11.Be7 Qe7 12.Nbd2 Rac8 13.Rc1=) 9...h6 (9...dc4 10.Bc4 a6 11.a4 Bd6 12.Nc3 ab5 13.ab5=) 10.a4 (10.Ne5 dc4 11.Bc4 a6 12.Nc6 Bc6 13.bc6=) 10...Nh7 (10...c5 11.Na3 (11.Nbd2= a6 12.cd5 Nd5 13.Re1=) 11...Qc7 12.Rc1 Bd6 13.cd5=) 11.Nbd2 (11.cd5 ed5 12.Qc2 Rc8 13.a5+=) 11...Bd6 (11...dc4 12.Bc4 c6 13.Qc2+=) 12.Qc2 (12.cd5 ed5 13.a5+/–) 12...Ng5 (12...Nhf6 13.a5+=) 13.a5 (13.cd5+/–) 13...Nf3 14.Bf3 (14.gf3?? Qg5 15.Kh1 Qh5-+) 14...a6 15.ab6 cb6 16.cd5 ab5? (better is 16...ed5!? 17.ba6 Ba6+=) 17.de6+– Bf3 18.ef7 (18.gf3?! fe6 19.Ne4 Ra1 20.Ra1 Nf6+=) 18...Rf7 19.Nf3 (19.gf3 Qg5 20.Kh1 Ra1 21.Ba1 Bh2 22.Qc8 Kh7 23.Kh2 Qh5 24.Kg2 Qg5 25.Kh1 Qh4 26.Kg1 Qg5 27.Kh2 Qh4 28.Kg1 Qg5 29.Kh2=) 19...Rf3 (19...Rc8 20.Qb3+–) 20.Ra8 Nb8 (20...Qa8 21.gf3 Qf3 22.Qb3 Qf7 23.Qf7 Kf7+–) 21.Raa1 (better is 21.gf3 Qg5 22.Kh1+–) 21...Rf8 (21...Qh4 22.h3 Qg5 23.e4+–) 22.g3 (22.Qb3 Rf7+–) 22...Qf6 23.d5 (better is 23.Qb3 Qf7 24.Qf7 Kf7 25.e4+–) 23...Qf3 (23...Qf7 24.e4+–) 24.Ra7 (better is 24.Qg6 Rf6 25.Bf6 Qf6 26.Qf6 gf6+–) 24...Rf7 25.Rf7 Kf7 26.Qc3 Qg4 27.Qc8 (27.f3 Qg6 28.Qc8 Ke7+–) 27...Nd7 (better is 27...Qc8 28.Ra1 g5-+) 28.Bd4 Bc5 29.Ba1 (better is 29.f3 Qf5 30.Bc5 Qd5+–) 29...Qf5 30.Qc6 Ne5 (30...Nf8 31.Qc7 Qd7 32.Qd7 Nd7 33.Rd1+–) 31.Be5 (better is 31.Qc7!? Nd7 32.e4 Qg4+–) 31...Qe5 32.h4 (32.Rd1 Qh5 33.Rd2 Kf8+–) 32...b4 33.Kh2 Qb2 (33...b3+–) 34.Qe6 (34.Qe6 Kf8 35.d6 Bd6 36.Qd6 Kf7 37.Qf4 Ke6 38.Rd1+–) 1–0. Kamaletdinov,Farit (1905) – Biyachuev,Minkail, 8th Astrakhan Open A, 2013.

4.Nf3 Bb7 5.e3 a6 6.Bb2=+.

4.Nf3 Bb7 5.e3 c5 6.Nc3 Be7 7.Be2 0-0 8.Bb2 Qc7 9.Qc2 d5 10.cd5 ed5 11.d4 Nbd7 12.Rd1 Rac8 13.0-0 cd4 14.Rd4 Ne4= 15.Rc1 Bf6 16.Re4 de4-+ 17.Nd2 Be5 18.Nde4 Bh2 19.Kf1 Be5-+ 20.Ng5 Nf6 21.Qb3 h6 22.Nf3 Bd6 23.Ne4?? Qc1 24.Bc1 Rc1 25.Bd1 Be4 26.Ke2 Rfc8 27.Qa4 Bd5 28.Qa7 Bc4 29.Kd2 Bb5 30.Qb6 Bb4# 0–1. Kreutz,Daniel – Linke,Michael, Koeln KSV–ch, 1997.

4.Nf3 Bb7 5.e3 Be7 6.Be2 c5 7.0-0 d5 8.cd5 Bd5 9.Nc3 Bb7 10.Bb2 0-0 11.Ne5 Qc7 12.Bf3 Nbd7 13.Bb7 Qb7 14.Nd7 Qd7 15.a4 Rfd8 16.Nb1 Ne4 17.Qg4 Nf6 18.Qe2 Qd3 19.Qd3 Rd3 20.Ra3 Rad8 21.Rd3 Rd3 22.Rc1 Ne4 23.Kh1? Nf2 24.Kg1 Ne4 25.Kf1 Bf6 26.Bf6-/+ Nf6 27.Rc3 Rd5 28.Ke2 Kf8 29.Rd3 Ke7 30.Na3 Rd3 31.Kd3 Kd6 32.Nc4 Ke7 33.Ne5 Nd5 34.Nc6 Kd7 35.Na7 Nb4 36.Kc4= Kc7 37.a5 ba5 38.Kc5 ½–½. Spiegel,Matthias – Radloff,Arno, Neubrandenburg op–C, 1999.

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

4.Bb2 d5=+.

4.bc6 Nc6 5.a3 Bc5 6.e3 Qb6 7.d4? Nd4! 8.ed4 Bd4 9.Be3 Qa5 10.Bd2 Qe5 11.Ne2 Ba1 12.Bb4 a5 13.f4 Qe3 14.Bd2 Qc5 15.Qb3 d5 16.Be3 Qc4 17.Nc1 Qb3 18.Nb3 Bb2 19.Bb5 Bd7 20.Bd7 Kd7 21.Nc5 Kc6 22.0-0 Ng4 0–1. Borralho – Garofalo,Antonio, ASIGC–PCSI, 1986.

4.d4 b6 5.Nc3 d5 6.e3= Bd6 7.Nf3 Nbd7 8.Bd3 Ne4 9.0-0?? 0-0?? 10.Ne2 Qf6 11.dc5 Qa1 12.cd6 Bb7 13.Be4 de4-/+ 14.Nfd4 Nc5 15.Nc6 Bc6 16.bc6-/+ Qe5 17.d7 Nd3 (17...Qc7 18.Nd4 e5+=). Gubesch,Adolf – Antusch,Ingrid, Bayern–ch Seniors, 2003.

4.d4 d5 5.e3=+.

4.e3 d5 5.Nf3=+.

4.e3 Be7 5.Nc3 d5 6.d4 Nbd7 7.Nf3 Nb6 8.Qb3 Nc4 9.Bc4 dc4 10.Qc4 0-0 11.0-0 b6 12.Bb2 Bb7 13.Ne5 Qc7 14.f3 a6 15.a4 Nd5 16.Rfe1 ab5 17.Nb5= Qc8 18.e4 Nf6 19.Ba3 Nd7 20.Nd7 Qd7 21.dc5 bc5 22.Bc5?? Rfc8-+ 23.Red1 Qc6 24.Nd6 Ba6 25.Qd4-/+ Qc5 26.Qc5? Rc5-+ 27.Rab1 Rc2 28.Nb7 Rb8 29.Rdc1 Bc5 30.Nc5 Rb1 31.Rb1 Rc5 32.Rb8 Rc8-+ 33.Rc8 Bc8 34.Kf2 Kf8 35.Ke3 Ke7 36.Kd4 Kd6 37.e5 Kc6 38.f4 Bd7 39.g3? f6 40.h4 Kc7 41.a5 Bb5 42.g4 Kd7 43.ef6 gf6 44.g5 Ke7 45.h5 Be2 46.Ke3 Bh5-+ 47.a6 Be8 48.a7 Bc6 49.Kd4 fg5 50.fg5 Kd6 51.Ke3 Ke5 (52.Kd3 Kf4-+; 51...e5 52.Kf2-+) 0–1. Korsvold,Jon_Egil – Luostarinen,Asmo, Vadsosjakken, Klasse C, 2003.

4.Nf3 b6 5.Nc3 Bb7 6.e3 Be7 7.Be2 d5 8.d4 Nbd7 9.Bb2 Ng4 10.0-0 Bf6 11.h3 Qc7 12.hg4 0-0 13.g5 Be7 14.dc5 Qc5 15.Qb3 Qd6 16.a4 Nc5 17.Qc2 dc4 18.Rad1 Qc7 19.Rd4 e5 20.Rg4 Rfd8 21.Bc4 Bd6 22.Nh4 Rac8 23.Nf5 Bf8 24.e4 Rd7 25.f4 g6 26.Nh6 Bh6 27.gh6 Na4 28.Bf7 Rf7 29.Qa4 Qc5 30.Kh2 Qf8 31.Rh4 g5 32.Rh3 gf4 33.Qb3 a5 34.Nd5 Qd6 35.Ba3 Bd5 36.ed5 Qf6 37.Rh1 e4 38.Bb2 Qg5 39.d6 Qg4 40.Rd1 e3 41.Qd5 e2 42.Re1 Re8 43.Bf6 a4 44.Be7 Qd7 45.Re2 Rc8 46.Qg5 Kh8 47.Rf3 Qf5 48.Qh4 Ra8 49.Rc3 f3 50.gf3 Qf4 51.Qf4 Rf4 52.d7 Rd8 53.Bd8 Kg8 54.Rg2 Kf7 55.Bf6 Rd4 56.d8Q Rd8 57.Bd8 Ke6 58.Rg7 Ke5 59.Bc7 Kd4 60.Rc1 Kd5 61.Rh7 a3 62.Re7 a2 63.h7 a1B 64.Rc6 Be5 65.Re5 Kd4 66.h8Q Kd3 67.Qd8 1–0. NN – COMP, 1991.

4.g3 d5 5.Na3 b6 6.Bg2 Bb7 7.Nf3 Nbd7 8.0-0 Be7 9.d3 0-0 10.Nd2 Qc7 11.Nc2 d4 12.Ne1 e5 13.a4 a5 14.Qc2 Ne8 15.Nb3 Nd6 16.e4 de3 17.fe3 Bg2 18.Ng2 f5 19.Bb2 Bg5 20.Nd2 Rae8 21.e4 (better is 21.Rf2!?=) 21...Bd2-/+ 22.Qd2 fe4 23.de4 Nf6 24.Rfe1 Nc4 25.Qc2 Nb2 26.Qb2 c4 27.Rac1 Qc5 (better is 27...Ng4 28.Qc3 Rc8-+) 28.Ne3= c3 (28...Ne4? 29.Rc4 Qd6 30.Re4+–) 29.Rc3 Qd4 30.Qb3 ½–½. Jamieson,Ian (2000) – Dilleigh,Steve (2120), Paington op, 2009.

4.Bb2 b6 5.a4 Bb7 6.e3 d5 7.cd5 Bd5 8.Nf3 Nbd7 9.Nc3 c6 10.Nd5 cd5 11.Be2 Qc7 12.0-0 Ng4 13.Rc1 Nde5 14.d4 Nf3 15.Bf3 Qh2 0-1. A_VB – MikeTheRoof, lichess.org, 2019.

4.e3 e5 5.Bb2 d6 6.a4 b6 7.Qf3 d5 8.Be5 Be7 9.Nc3 Bb7 10.Bf6 Bf6 11.Rc1 Qc8 12.Nd5 Be5 13.Qe4 Nd7 14.g3 Qd8 15.Bh3 f6 16.Bd7 Qd7 17.Nf6 gf6 18.Qb7 0-0 19.Ne2 Bb2 20.Rc2 Ba3 21.Nf4 Bb4 22.Qd5 Qd5 23.Nd5 Bd6 24.f4 Rac8 25.e4 Rf7 26.Kf2 Rd8 27.Kf3 f5 28.e5 Bc5 29.Re1 Bd4 30.Nf6 Kg7 31.h3 Kg6 32.g4 fg4 33.hg4 Bc5 34.f5 Kg5 35.Rh1 h5 36.Rh5 Black king mated 1-0. themuttsknutts - top corner (1810), ChessWorld.net, 2013.

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

4.Nc3 d5 5.e3=+.

4.Nc3 Be7 5.e3 c5 (5...0-0 6.Nf3=+) 6.Nf3 d6 7.d4 cd4 8.ed4 b6 (8...a6 9.Bd3=) 9.Bd3+= Bb7 10.0-0 Nbd7 11.Re1 0-0 12.Bf4 d5 13.cd5 Nd5 14.Nd5 Bd5 15.Ne5 Ne5 (15...Rc8 16.Rc1 Ne5 17.Rc8 Qc8 18.Be5 Ba2 19.Qa1=) 16.Be5 (16.de5 Bc5+=) 16...Bd6 17.Qh5 g6 18.Qh6 Be5 19.Re5 Qc7 (19...Qd7 20.Rh5 f5 21.Rh3=) 20.Rc1 Qd7 21.Rh5 f5=+ 22.Rh4 Ba2 23.Rc6 Bd5 24.Rd6 Qe7-/+ 25.Rh3 Rf7 26.Qf4 Rc8 27.f3 Rc3 28.Be2 Qc7 29.Qe5 f4 30.g4 Re3 (30...Re3 31.Rd5 ed5 (31...Re5?! 32.Re5 Rd7 33.Re6-+) 32.Qc7 Rc7-+) 0–1. katchum (2430) – kbcober (2270), net–chess.com, 2007.

4.Bb2 dc4 5.a4 Bd7 (5...Qd5 6.e3=+) 6.e3=+ Be7 7.Bc4 0-0 8.Nf3 a6 9.0-0 ab5 10.ab5 Ra1 11.Ba1 c6 12.bc6 Bc6 13.Ne5 Bd5 14.Be2 Nc6 15.Nc3?? (better is 15.d4=) 15...Ne5-+ 16.Nd5 Qd5 (< 16...ed5 17.Be5 Bd6 18.Bf6 Qf6 19.Qb3+=) 17.d4 Nc6 18.Bf3 Qd7 19.Qa4 Rc8 20.Rc1 Nd8 21.Qd1 Nd5 22.Bd5 ed5 23.Bb2 Ne6 24.g3 h6 25.h4 Rc6 26.Ra1 Qc7 27.Qd3 Rc2 28.Ra8 Nf8 29.Ba3 Ba3 30.Qa3+/– Rc1 31.Kg2 Kh7 32.Qf8 Qc2?? 33.Qf7 Qe4 34.f3 Qc2 35.Kh3 Rh1 36.Kg4 h5 37.Qh5# 1–0. poganinbezdom – lampat, kurnik, 2012.

4.Bb2 dc4 5.e3 Qd5 6.Nc3 Qc5 7.a4 a6 8.Ba3 Qg5 9.Bf8 (9.Nf3 Qg4=) 9...Kf8 10.Nf3 Qg4 (10...Qc5 11.Rb1=) 11.Ne5 Qf5 (11...Qd1 12.Rd1 ab5 13.ab5=) 12.Nc4 h6 (12...Nd5 13.Qc1 ab5 14.ab5 Ra1 15.Qa1 Nc3 16.dc3 Qb5 17.Qa3 c5 18.Bd3=) 13.Be2 g6 14.0-0 Kg7 15.Bf3 (15.d4 Nd5 16.Nd5 ed5+/-) 15...Rd8 (15...e5 16.d4 Nbd7 17.Be2+=) 16.ba6 (16.d4 c6+/-) 16...Ra6+= 17.Nb5 c6 (17...Ne8+=) 18.Nd4 (better 18.Nbd6!? Qg5 19.Qb3+/-) 18...Qc5= 19.Rc1 Qb4 20.a5 Nbd7 21.h3 (21.Be2 Qe7+=) 21...e5= 22.Nb3 e4 (22...Nc5 23.Nc5 Qc5 24.Qb3=) 23.Be2+= Nd5 24.Rb1 Qe7 25.Nd4 f5 26.g4 (26.f4!?=) 26...N7f6=+ 27.Qb3 c5 28.Nb5 (28.Nc2 f4 29.Rfd1 Nb4=) 28...Nb4=+ 29.d4? (better 29.f3=+) 29...Bd7?? (better 29...ed3 30.Bf3 Be6-+) 30.dc5 Bb5 31.Qb4 Bc4 32.Qc4 (better 32.Rfd1!? Rc6 33.Rdc1+-) 32...Ra5= 33.Qc3 (33.Rb5!? Rb5 34.Qb5=) 33...Rc5=+ 34.Qb3 (34.Rb7 Rc3 35.Re7=+ Kf7) 34...Rdc8 35.Qb2 (35.Qb7!? R8c7 36.Qb4=+) 35...R8c7-/+ 36.Qb7?? (better 36.Qd4-/+) 36...g5 (better 36...Rb7 37.f4 fg4-+) 37.Qb2 R7c6 (37...Rc2 38.Qb5=+) 38.Qb3 f4 39.Qg8 Qb7 Qh7+ (39.Ra1=+ Rd6; better 39.Bf3 Qb8 Rb7+ 39...Rc3 Rc7+ Qf8 40.h4 Kxg8). Poncheki (2310) - derphurf (2340), Casual bullet game, lichess.org, 2023.

4.Bb2 c6 5.e4 (5.e3 a6=+) 5...cb5 (5...de4 6.Nc3-/+) 6.cb5 (6.cd5 ed5 7.ed5 Qe7 8.Qe2 Nd5 9.Qe7 Be7=) 6...Bb4 (better is 6...Ne4!? 7.Nc3 Nc3 8.Bc3 d4-/+) 7.Qb3 Qa5 (7...Be7!? 8.e5 Ne4=) 8.ed5+= Ne4?? (8...Be7 9.de6 Be6 10.Bc4 Bc4 11.Qc4+=) 9.Nf3 (better is 9.Qc2!? Nd6 10.Bg7 Rg8 11.Qh7 Rg7 12.Qh8 Ke7 13.Qg7 ed5 14.Qg5 f6 15.Qd5 Be6+–) 9...ed5? (better is 9...0-0 10.Qd3 f5+=) 10.Qd5+– Nd6? 11.Qe5 Be6?! 12.Qg7 Rf8 13.Ng5 Nc4 14.Bc4 Bc4 15.Qe5 Kd8 16.Qd4 Nd7 17.Qc4 Rc8 18.Nf7 Ke8 19.Qe6 Be7 20.Nd6 Kd8 21.Nc8 Kc8 22.Qe7 Qb5 23.Ba3 Rd8 24.Nc3 Qd3 25.Rc1 Nb8 26.Qe6 Nd7 27.Nb5 Kb8+– 28.Bd6 Ka8 29.Nc7 Kb8+– 30.Nd5 Ka8 31.Qd7! Rd7 32.Rc8 1–0. blackiwhite (1725) – missho (1715), kurnik, 2011.

4.d3 dc4!? 5.dc4 Bb4 6.Nd2 Qd4-/+.

4.d3 d4 5.Nf3=+ c5 (5...Bd6 6.e3=+) 6.e3 de3 7.Be3 Nbd7 8.Be2 Ng4 9.0-0 e5 10.Nc3 Nb6 (10...Bd6 11.Ne4 Be7 12.Qc2=) 11.Na4 (11.a4 Ne3 12.fe3 Bd6=) 11...Qf6 (better is 11...Na4 12.Qa4 Be7=) 12.Bc5?? (better is 12.Bg5!? Qd6 13.Nb6 Qb6 14.h3+=) 12...Na4-/+ 13.Qa4?? (13.Bf8 Nc3 14.Bg7 Qg7 15.Qe1 Ne2 16.Qe2-/+) 13...Bc5-+ 14.h3 h5 (14...Nf2 15.Rf2 Bf2 16.Kf2-+) 15.hg4? (better is 15.Rae1 Nh6 16.Bd1-+) 15...hg4 (15...Bg4?! 16.Rae1 Be6 17.Bd1=+) 16.Ne1 (16.Ng5 Qg5 17.Rfe1-+) 16...Qh4 17.b6 Bd7 18.Nf3 (18.Qd7 Kd7 19.Bg4 Qg4 20.Nf3 Qh5 21.Nh4 Qh4 22.d4 Qh2) 18…Qh1 0-1. MikeLWhit - ian5300, ChessWorld.net, 2005.

4.cd5 ed5 5.Nf3=+.

4.cd5 Nd5 5.e4= Nb6 6.Nc3 Be7 7.Nf3 Bd7 8.Ne5 Bf6 9.d4 Be5 10.de5 c6 11.bc6 Nc6 12.Be2 (better is 12.Nb5!? 0-0 13.Ba3+=) 12...Ne5=+ 13.Bf4 0-0?? (better is 13...Qf6 14.Qd2 0-0=+) 14.Be5+- f6 (14...Qg5 15.Bg3+-) 15.Bf4 e5 16.Be3 Bc6 (16...Be6 17.Qd8 Rfd8 18.Rb1+-) 17.Bb6 (17.Qb3!? Kh8+-) 17...Qb6 18.Nd5 Bd5 19.Qd5 Kh8 20.0-0 Rfd8 (20...Rad8 21.Rfb1 Rd5 22.Rb6+=) 21.Qb3 Qa5 22.h3 Rac8 23.Qb7 h6 24.Rfc1 Rc1 25.Rc1 Qd2 26.Rc7 Qe2 27.Rg7 Qe4 28.Qe4 Kg7 29.Kh2 Rd2 30.Kg3 Ra2 31.Qc6 Kg6 32.Kg4 h5 33.Kh4 Rf2 34.g4 hg4 35.hg4 Rf4 36.Qa6 e4 37.Qa7 f5 38.Qa6 Kh7 39.Kh5 Rg4 40.Qa7 Rg7 (41.Qb6 Kh8+-). MikeLWhit - Tricky Rabbitt, ChessWorld.net, 2005.

4.e3 a6 5.Bb2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.c4).

4.e3 dc4 5.Bc4 c6 6.a4 cb5 7.ab5 a6 8.Bb2 ab5?? (better is 8...Bd6=) 9.Ra8+– bc4 10.Rb8 Qc7 (10...Nd7 11.Qa4 Bd6 12.Ra8+–) 11.Rc8! Qc8 12.Qa4 Nd7 13.Na3 Be7 14.Qc4 Qd8 15.Nf3 0-0 16.0-0 Nb6 17.Qb3 Nd5 18.d4 Qa5 19.Nc4 Qc7 20.Rc1 Qd7 21.Nfe5 Qd8 22.Ba3 f6 23.Nd3 Ba3 24.Na3 Qa8 25.e4 Ne7 26.Qe6 Rf7 27.Nb5 Nc6 28.Nd6 Nd8 29.Qd5 (29.Qd5 g6 30.Rc7 Qa1 31.Nc1 Qd4 32.Qd4 Rc7 33.Nd3+–) 1–0. carocan (1705) – fortinet (1610), kurnik, 2011.

4.e3 c5 5.Bb2 Be7 6.Nf3 0-0 7.Be2 Nbd7 8.0-0 b6 9.d3 Bb7 10.Nbd2 (-->1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

4.e3 c5 5.Nf3 a6 6.Bb2 ab5 7.cb5 (7.cd5 Ra5=) 7...Nbd7 8.a4 Bd6 9.Be2 0-0 10.0-0 e5 11.d4 e4 12.Ne5 Re8 (12...c4!?=+) 13.Nd7= Nd7 14.dc5 (14.Nc3!?=) 14...Nc5=+ 15.Nc3 Qh4 (15...Be5!?=+) 16.g3= Qh6 17.Qd5 Nd3? (better 17...Re5 18.Qd1 Bh3=) 18.Ne4+- Nb2? (better 18...Re4 19.Qd3 Re7+-) 19.Nd6 Rd8 (19...Qe6 20.Qe6 Re6 21.Nc8 Rc8 22.Bg4+-) 20.Qf7 Kh8 21.Bc4 (better 21.Nc8 Rac8 22.Qb7+-) 21...Nc4?? (better 21...Qd6 22.Bb3 Nd3-/+) 22.Nc4+- Be6 23.Ne5 Bf7? (23...Qh3 24.Qe7 Bd5+-) 24.Nf7 Kg8 25.Nh6 gh6 26.a5 Rd5 27.Rfb1 Kf7 (27...Rd6 28.Rc1 Rd5 29.b6+-) 28.Kg2 Kf6 (28...Rd6 29.Rc1 Ke7 30.Rc7 Rd7 31.Rd7 Kd7 32.a6+-) 29.g4 (better 29.a6!? Ke7+-) 29...h5 30.h3 hg4 31.hg4 h5 32.gh5 Rh5 33.Kf3 Rf5 34.Ke2 Rc5 35.Rb2 Ke5 36.Ra4 Ke6 37.a6 ba6 38.ba6 Rc6 39.a7 Rc7 40.Rbb4 (better 40.Rb6 Kd7 41.Rh6 Rc2 42.Kf3+-) 40...Raa7 41.Rb6 Kd7 42.Ra7 Ra7 43.f4 Ra5 44.Kf3 Rc5 45.e4 Rc1 (45...Rc3 46.Kg4+-) 46.f5 Rf1 (46...Rc5 47.Kf4+-) 47.Ke3 (47.Kg4 Re1 48.Kf4 Kc7+-) 47...Re1 48.Kd4 Rd1 (48...Ra1 49.e5+-) 49.Ke5 Re1 (49...Rh1 50.Rb7 Kc6 51.Rg7+-) 50.f6 Ke8 (50...Ra1 51.Rb7 Kc6 52.Rb8+-) 51.Kf5 Rf1 (51...Kd7 52.e5 Rf1 53.Kg6+-) 52.Ke6 Rd1 (52...Kd8+-) 53.Rb8 Rd8 54.f7 (54.f7 Kf8 55.Rd8 Kg7 56.f8Q Kg6 57.Qf5 Kh6 58.Rh8 Kg7 59.Qf6) 1-0. Naoum (2115) - sorel (1905), Rated Classical game, lichess.org, 2013. (=1.c4 Nf6 2.b4 e6 3.b5)

4.e3 c5 5.Nf3 Bd6 6.Bb2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c5).

4.e3 Bd6=+.

4.e3 Bd7 5.a4 b6 6.Bb2 a6 7.Nf3 ab5 8.cb5 Ne4 9.d4 Nd6 10.Bd3 Nc4 11.Bc4 dc4 12.0-0 c6 13.Nc3 Bb4 14.Ne5 Bc3 15.Bc3 cb5 16.ab5 Ra1 17.Qa1 Bb5 18.Qb2 Ba6 19.Ra1 b5 20.Bb4 f6 21.Nf3 Kf7 22.e4 Bb7 23.d5 ed5 24.ed5 Bd5 25.Ra7 Nd7 26.Nd4 Qb8 27.Rd7 Ke8 28.Re7 1-0. A_VB – blazingheart, lichess.org, 2019.

4.Nf3 a6 5.cd5 ab5 6.e4 Ra5 7.e5 (7.de6 Be6 (< 7...Ne4 8.ef7 Kf7 9.Qb3 Ke8 10.Bb5 c6 11.Bc4+/-) 8.e5 Nd5=+ (8...Ra2? 9.Ra2 Ba2 10.ef6+-)) 7...Nd5-/+ 8.Nd4 Nc6 (8...Bd7 9.Nb3 Ra4 10.d4-/+) 9.Nb3 (9.Bb5 Qh4 10.Bc6 bc6=) 9...Qg5-/+ 10.d4 (10.Qe2!? Ra4 11.d4 Bb4 12.Kd1-/+) 10...Bb4-+ 11.Bd2 (11.Ke2 Qh5 12.g4 Qg4 13.f3 Qh4 14.Na5 Nd4 (14...Na5?! 15.a3 Bc3 16.Ra2-+) 15.Kd3 Ba5-+) 11...Nd4! 12.Nd4 (12.f4 Qf4 13.Nd4 Qe5 14.Be2 Qd4 15.Bb4 Qb4 (15...Qa1?! 16.Ba5 Qa2 17.Bd2-/+) 16.Nd2 Ne3-+) 12...Qe5 13.Be2 Qd4 14.0-0 Qa1 15.Bb4 Nb4 16.Qb3 Nc6 17.Bb5 Qa2 18.Bc6 bc6 19.Qb8 0-0 20.Qc7 Ba6 21.Re1 Rb5 22.Nc3 Qd2 (22...Qd2 23.Rd1 Qc3-+) 0-1. patman007 - Creatchy, ChessWorld.net, 2005.

4.Bb2 Bg7 5.a4 0-0 6.e3 d5 7.d4 dc4 (7...Ne4 8.Nd2=) 8.Bc4 a6 9.Nf3 ab5 10.ab5 Ra1 11.Ba1 c6 12.0-0 cb5 13.Bb5 Qa5 14.Nc3 Nc6 15.Qa4 Qb6 (15...Qa4 16.Na4 Ne7 17.Rb1+=) 16.Rb1 Qc7 17.Bc6 bc6 18.Ne5 Nd5 19.Qc6?? (better is 19.Ne4+=) 19...Be5-+ 20.Qc7 Bc7 21.Nd5 ed5 22.Rc1 Ba5 23.g3 Bh3 24.Bc3 Rc8 25.Bb2 Rc1 26.Bc1 Kf8 27.f3 Be1 28.Ba3 Ke8 29.Bd6 Kd7 30.Be5 Kc6 31.g4 Kb5 32.Bg3 Bd2 33.Kf2 Kc4 34.Bf4 Kd3 35.Bg5 f5 36.gf5 Bf5 37.h4 h5 38.e4 de4 39.Bd2 Kd2 40.fe4 Be4 41.Kg3 Ke3 (41...Ke3 42.Kh2 Kd4-+) 0–1. popovicigelu – kaarlesuuri, kurnik, 2011.

4.Bb2 Bg7 5.a4 0-0 6.f3? d5 (better is 6...Nh5 7.Bg7 Qh4 (7...Kg7?! 8.g3=; 7...Ng7?! 8.e3=+) 8.g3 Ng3-+) 7.Na3 c6 8.e3 a6 9.Nh3 ab5 10.ab5 dc4 11.Bc4 cb5 12.Nb5 Ra1 13.Qa1 Bd7 14.0-0 Nc6 15.Nf2 Nh5 16.d4 Qa8 17.Nd6 Na5 18.Ba3 Rd8 19.Bb5 Bf8 20.Bd7 Rd7 21.Nb5 Ba3 22.Qa3 Qa6 23.Nc3 Nf6 24.Ra1 b6 25.Nce4 Nd5 26.Nd3 Ne3?? 27.Ne5 Qe2= 28.Qa2 Qa2-+ 29.Ra2 Rd4 30.Kf2 Kg7?? 31.Ke3+/– Rb4? 32.Nd3 Rb3 33.Nd2 Rc3 34.Kd4 Rc7 35.Nb4 Rd7 36.Kc3 f6 37.Nd3 Nc6 38.Nc4?? b5?? 39.Na5?? b4?? 40.Nb4+– Ne5 41.Rd2 Rc7 42.Kb3 h5 43.Rd6 Kf7 44.Nac6 Nd7? 45.Kc4 g5 46.Kb5 f5 47.Rd7! Rd7 48.Ne5 Ke7 49.Nd7 Kd7 50.Nd3 Kd6 51.Kc4 e5. azme – kasparovjunio (1625), kurnik, 2011.

4.a3 Bc3 5.dc3 d5 6.Bg5 c6 7.cd5 ed5 8.Nf3 Nbd7 9.e3 Qa5 10.Qb3 Ne4 11.Rc1 Ng5 12.Ng5 Nf6 13.Bd3 0-0 14.0-0 h6 15.Nf3 Re8 16.Ne5?? Qc7 17.c4?? Be6 18.h3?? Qe7 19.a4 dc4 20.Bc4 Bc4 21.Qc4?? Nd5 22.a5?? f6 23.Nd3=+ Kh8 24.a6 Nb6 25.Qa2 f5 26.Ne5?? Kh7?? 27.Qb1?? Rf8 28.ab7+= Qb7 29.Rc6 Rac8 30.Rfc1+= Rc6 31.Rc6 Qa8 32.Qa2 Qb8 33.Qe6 Rf6= 34.Qe7? Nd5-+ 35.Qd7 Nb6?? 36.Qc7 Qc7 37.Rc7 a5 38.Ra7 a4 39.Ra6 Kg8 40.Nd3+= Rg6 41.Nf4 (41...Rd6 42.Kf1-/+; better is 41.Nb2!? Rd6 42.Na4 Rd1 43.Kh2 Na4 44.Ra4+/–) 1–0. Soto Pilar – Suarez,E, Benasque, 1990.

4.Bb2 0-0 5.e3 c5 6.a3 Ba5 7.Rb1 Nc6 8.Nf3 d5 9.cd5 ed5 10.d4 (10.Qc2 Bg4-/+) 10...cd4 (10...Ne4 11.Rc1 Bg4 12.dc5-+) 11.Nd4-/+ Ne4 12.Qc2?? (better is 12.Rc1-+) 12...Nd4 13.ed4 Re8 14.Be2 Bf5 15.Qc1 Rc8 16.0-0 Nc3 17.Bc3 Rc3 18.Qb2 Bb1 19.Rb1 Qe7 20.Kf1 Rb3! 21.Qb3 Qe2 22.Kg1 Qe1! (22...Qe1 23.Re1 Re1#) 0–1. Cruz – AntoniusBlock, internet, 2009.

4.Bb2 0-0 5.e3 Nc6 6.a3 Ba5 7.Be2 Re8 8.Nh3 a6 9.0-0 Bb6 10.Nf4 h6 11.Bh5 d5 12.cd5 ed5 13.d4 Bf5 14.Qb3? Ne7 15.Bf3=+ Rb8 16.Ncd5= Nfd5 17.Nd5 Be6 18.Ne7 Qe7 19.d5 Bd7 20.Qc3 f6 21.Bh5 Rf8 22.Qc4 Qd6 23.a4 Ba7? 24.Ba3+– Qe5 25.Bf8 Kf8 26.Bf3 b5 27.Qb4 Kg8 28.Rfe1 Bb6 29.ab5 Bb5 30.Qb3 Kh8 31.Be2?? Be2-/+ 32.f3?? Be3-+ 33.Kh1 Rb3 34.Re2 Qd5 35.Ree1 c5 36.Ra6 c4 37.h3 Rd3 38.Rea1 Rd1 39.Rd1 Qd1 40.Kh2 Qg1 41.Kg3 Bf2 42.Kf4 Qg2 (43.Ke4 f5 44.Ke5 Qf3-+; 42...Qh2 43.g3 Qg3 44.Kf5 Qe5 45.Kg6 Qe8 46.Kf5 Qb5 47.Ke6 Qa6 48.Kd7 Qb5 49.Ke7 Qc5 50.Ke6 Qc6 51.Kf7 Qf3 52.Ke7 Qh3 53.Kd6 Qd3 54.Ke6 c3 55.Ke7 c2 56.Kf7 c1Q 57.Ke6 Kg8 58.Ke7 Qce3) 0–1. Tricky Rabbitt – ahmed sharkawy_1, ChessWorld.net, 2005.

4.Qc2 0-0 5.a3 Bc3 6.Qc3 b6 7.e3 Bb7 8.Be2?? (8.Bb2 Na6-/+) 8...d6 (8...Bg2 9.Bf3 Bh1 10.Bh1-+) 9.Bb2?? (9.Nf3 Ne4 10.Qc2 Ng5-/+) 9...e5 (better is 9...Bg2 10.Bf3 Bh1 11.Bh1 c6-+) 10.d4?? (better is 10.Nf3-/+) 10…Re8 (10...Re8 11.Nf3 ed4 12.Qd4 Be4-/+) 0–1. Siviero,Giuseppe (2435) – Andriuschenko,Nikolay (2440), Ros Miro mem Madrid email, 2004.

4.Ba3 ab4-/+ 5.Bb4 c6 (5...Na6 6.Qa4-/+) 6.Nf3 (6.d4 d6 7.cd6 Nd5 8.d7 Nd7 9.Bf8 Rf8=) 6...Be7 (6...Na6 7.Qa4=+) 7.Nc3 (7.d4 0-0=) 7...Nd5 (7...Na6 8.Qa4=+) 8.a3 Nb4 9.ab4 Ra1 10.Qa1 0-0 11.e3 Bf6 (11...d6 12.Qa8 Qc7 13.Qa5 Qa5 14.ba5 dc5 15.Ne5=+) 12.Qb1 d5 13.Bd3 (13.d4 b6=) 13...g6= 14.0-0 Nd7 15.e4 Bc3 (15...Ne5!? 16.Ne5 Be5 17.ed5 cd5=+) 16.dc3+= Nf6 (16...Qf6 17.c4+=) 17.ed5 (17.e5 Nd7+/-) 17...Nd5+= 18.c4 Nf6 (18...Nb4 19.Bg6 hg6 20.Qb4+=) 19.b5 (19.Rd1 Qc7+/-) 19...cb5 (19...Nd7 20.Rd1+/-) 20.cb5 Nd5 21.Qc1 Qa5 22.c6 bc6 23.bc6 Nb4 (23...Qc7!?+=) 24.Qc3+/- Rd8 25.Rb1?? (better is 25.Be4 Qa4 26.c7+/-) 25...Rd3-+ 26.Qb2?? Nc6 27.g3 Rf3 28.Kg2 Rd3 29.Qc2 Qd5 30.Kh3 Qf5 31.Kg2-+ Qd5 32.Kh3 e5 33.Kh4 Bf5 34.g4 Rh3! 35.Kh3 Qf3 36.Kh4 Qg4 0-1. MikeLWhit - ahmed sharkawy_1, ChessWorld.net, 2005.

4.Qa4+= c6 5.d4 (5.a3 Na6+=) 5...b5-/+ 6.Qa3 Bb7 (6...d6 7.Bb2-/+) 7.Bg5 (7.ba5 d6 8.cd6 Bd6+=) 7...ab4 (7...d6!?-/+) 8.Qb4+= Be7 (8...d6 9.cd6 Bd6 10.Qd2+=) 9.Nf3= Qa5 (9...0-0 10.Nc3=) 10.Qa5 Ra5 11.Nbd2 (11.Bf4 0-0=) 11...Na6+= 12.Nb3 Ra4 13.Bd2 0-0 (13...d6 14.cd6 Bd6 15.Rb1-/+) 14.Na5 (14.e3 Ra8+=) 14...Rb8 (14...Ba8 15.Nb3+=) 15.Nb7 Rb7 16.e3 Nd5 (16...Ra7 17.Bd3+=) 17.Bd3= Nab4 18.Bb1 Rba7 (18...f5 19.h3=) 19.e4= Nd3?? (better is 19...Nc7=) 20.Bd3+– Ra2 21.Ra2 Ra2 22.0-0 (better is 22.Rf1!? Nc7+–) 22...Bd8?? (better is 22...Rd2 23.Nd2 Nf4+–) 23.ed5 (23.ed5 Bf6 24.dc6 dc6 25.Rd1+–) 1–0. Rosner,Dirk – Zimmer,Georg, corr, 1993.

4.Qa4 Nd5 5.a3 b5 6.Qb5 Ba6 (6...ab4 7.d4=) 7.Qa4 (7.Qa5 Nc6 8.Qa4 Be2 9.Qb3 Bf1 10.Kf1 Ncb4 11.Nf3=+) 7...ab4= 8.d4 (8.e4 Bb7 9.Qb3 Nf6=+) 8...Nc6 9.Qd1 d6 (9...b3 10.e4 Bf1 11.Kf1=+) 10.cd6 (10.e4 Bf1 11.Kf1-/+) 10...Bd6=+ 11.Nf3 0-0 12.e4 Bf1 13.Rf1 Nb6 14.Rg1 (14.Qc2 Qd7=+) 14...Qd7 15.a4 (15.e5 Be7=+) 15...Ra5 16.Nbd2 (16.Qb3 Rfa8 17.e5 Be7-+) 16...Rfa8 (17.Nb3 Ra4 18.Ra4 Na4-+) 0-1. Woschkat,Karl_Heinz - Kjaerstad, Oeyvind J, corr 3GMM-04, 1995.

4.ba5 Bc5-/+ 5.Na3? (5.d4 Be7-/+) 5...d5 (5...Ng4 6.e3 Nf2 7.Kf2 Qf6 8.Nf3 Qa1 9.Qc2 Ba3 10.Ba3-+) 6.Qc2? (better is 6.Nc2-+) 6...Ra5 (6...Bf2 7.Kd1-+) 7.Qc3 (7.Nh3 Nc6 8.Qb3 Nd4-+) 7...b6 (better is 7...Bf2 8.Kd1 Nc6-+) 8.e3 Ba6 (8...0-0 9.d4 Be7 10.Bd3-+) 9.Ba6 Na6 10.Nc2 Nb8 (10...0-0 11.Bb2-+) 11.f4 Nbd7-+ 12.Nf3 Qa8 13.a3 Rg8 14.d3-/+ Bd6 15.Qb2 c5 16.Bd2 Ra7 17.h3 Qb8 18.Qb5 Kd8 19.0-0 Rf8 20.Rfb1 Ke7 21.g4 Ne8 22.a4 Nc7 23.Qb2 f6 24.d4 Qa8-+ 25.Qa2 Rb8 26.Nce1 Qc6 27.Nd3 Rba8 28.dc5 Nc5-+ 29.Nc5 Bc5 30.a5 ba5 31.Nd4 Bd4 32.ed4 Ne8 33.Rc1 Qb6 34.Rc5 a4 35.Rb1 Qa6 36.Bb4 Kf7 37.Rb2? Qd3 38.Rd5 Qe3 39.Rf2 ed5 40.Qd5 Qe6 41.Qh5 Kg8 42.f5 Qf7 43.Qh4 a3 (43...a3 44.Rf1 a2-+) 0–1. Hummel,Erik Jan – L'Ami,Erwin, Hengelo U14 op, 1998.

4.b5 Bc5 5.Nc3 d5 6.d4 Bb4 7.Bd2 0-0 8.h4 c6 9.e3 Qc7 10.Bd3 Bc3 11.Bc3 cb5 12.Rc1 Qb6 13.h5 Bd7 14.h6 b4 15.hg7 Kg7 16.Qf3 Qd6 17.Rh3 Rh8 18.Rg3 Qg3 19.Qg3 Kf8 20.Qd6 Ke8 21.Bb2 Rg8 22.g3 Nc6 23.Nf3 Rf8 24.Ke2 a4 25.Rc6 bc6 26.Qb4 Rc8 27.Ba3 c5 28.dc5 Bc6 29.Ne5 Ra8 30.Nc6 Nd7 31.Bb5 f6 32.Ne5 fe5 33.Bd7 Kf7 34.Be6 Ke6 35.c6 Rfe8 36.Qd6 Kf7 37.Qd5 Kf6 38.f4 ef4 39.Bb2 Kg6 40.gf4 Rg8 41.Qg5 Kf7 42.Qf5 Ke7 43.Ba3 Ke8 44.Qe6 1-0. Davss (2240) - kaweczka (2065), Rated Classical game, lichess.org, 2014. (=1.c4 Nf6 2.b4 e6 3.c5)

4.d4 Bb7 5.f3 a5 6.Bd2 (6.e4!?=+) 6...ab4-+ 7.Bb4 Nd5 8.Qb3? (8.Bc3 bc5 9.e4 Nc3 10.Nc3 cd4 11.Qd4 Nc6-+) 8...Nc6 (8...Qh4 9.g3 Qd4 10.Bc3 Nc3 11.Nc3 Bc5 12.Rd1 Qf2 13.Kd2 Qe3 14.Kc2-+) 9.Bd2? (better is 9.Bc3-+) 9...Nd4 10.Qb2 Nc6?? (better is 10...Bc5 11.e4 Nb4 12.Bb4 Bb4 13.Nd2 Qf6-+) 11.e4-/+ Nf6 12.Bg5? Bc5-+ 13.e5 Bd4 14.Nc3 Be5 15.f4 Bc3 16.Qc3 0-0 17.Bd3 Na5 18.Nf3 c5 19.0-0 d5 20.Qc2 20...h6 21.Bf6 Qf6 22.Ne5 Qe7 23.f5 ef5 24.Rae1 Qd6 25.Bf5 g6 26.Nf7 Rf7?? 27.Be6+- Kh8 28.Rf7 Rf8 29.Qg6 Rf7 30.Qf7 Qd8 31.Bf5 Qg8 32.Re8 (32...Qe8 33.Qh7) 1-0. Mengs - touwladder, ChessWorld.net, 2004.

4.d4 Nc6 5.a3 bc5 6.bc5 d6 7.cd6 cd6 8.e3 Be7 9.Nf3 0-0 10.Be2 Bb7 11.0-0 Qc7 12.Nbd2 Rfd8 13.Rb1 e5 14.de5 de5 15.Bb2 e4 16.Nd4 Ne5 17.Qc1 Rac8 18.Qc7 Rc7 19.Rfc1 Rc1 20.Rc1 Rc8 21.Nf5 Rc1= 22.Bc1 Kf8 23.Ne7 Ke7 24.Bb2 Ned7 ½–½. hal1958 – NaoSei, playchess.de, 2003.

4.a3 a5 5.e4 Nf6 6.e5 Nd5 7.Qa4 (7.b5 Bc5 8.d4 Be7+=) 7...b6 8.Bb2 (8.b5 Bc5 9.Nf3 0-0+=) 8...Bb7-/+ 9.cb6 (9.b5 Bc5 10.Nf3 0-0-/+) 9...Nb6 (9...cb6?! 10.ba5 Ra5 11.Qb3+=) 10.Qb3 Bd5 11.Qg3 Na4 (11...ab4 12.ab4 Nc6 13.b5 Ra1 14.Ba1-/+) 12.Bd4 (12.Bc1!?-/+) 12...Nc6 13.Bc3 Nc3 (13...ab4 14.Bb4 Nd4 15.Bf8 Rf8 16.Qd3-+) 14.dc3 (14.Nc3 ab4 15.Nd5 ed5-/+) 14...ab4-+ 15.c4 (15.Bd3 Ne5 16.Qe5-+) 15...Be4 16.Nd2 Ra3 17.Ra3 ba3 18.Qc3 (18.Ne2 a2 19.Nb3 Qe7-+) 18...a2 (18...Bb4!? 19.Qc1 Qg5 20.f4 Qf4 21.Ne2-+) 19.Ne2 Qa8 20.Qa1 Nb4 21.Nd4 Bc5 22.N2b3 Bd4 23.Nd4 Qa5 (better is 23...c5 24.Be2 cd4 25.0-0-+) 24.Ke2 Qe5 (24...c5!? 25.Nb3 Qa3 26.Qc3-+) 25.f3 Bb1 26.Kf2 Qc5 27.Ke1 (27.Kg3 Qg5 28.Kh3-+) 27…Qd4! (27...Qd4 28.Qd4 Nc2 29.Kd2 Nd4-+) 0–1. Roos,Nancy – Gross,Henry, 2nd Pan–American, 1954.

4.a3 b6 5.cb6 ab6 6.e4 Nb4-/+ 7.Bb2 N4c6 8.e5 Ne5?? 9.Be5+/– d6 10.Bb2 c6 11.d4 b5 12.Nc3 Bb7 13.g4 c5? 14.f3 Qf6? 15.d5 Qe5 16.Nge2 b4 17.ab4+– cb4?? 18.Ra8 Ba8 19.Qa4 Nd7 20.Qa8 Ke7 21.Na4 Qe3 22.Bg2 Ne5 23.Qb7 Nd7 24.Nb6 Qb6 25.Qb6 Nb6+/– 26.de6 fe6 27.Nd4 Nd5 28.Nc6 Kd7+= 29.Nb8 Kc7 30.Na6 Kb6 31.Bf1 Be7 32.Bd4 Kb7 33.Bg7 Rc8 34.Bd4 Ra8 35.h4 e5 36.Bc4 Kc6?? 37.Bd5 Kd5 38.Nc7 Kd4 39.Na8 b3 40.Kd2 Kc4 41.Nb6 (41...Kd4 42.Rb1+–) 1–0. xCalvin – ian5300, ChessWorld.net, 2005.

4.d4 dc5 5.bc5 b6 6.a4 bc5 7.dc5 Qd1 8.Kd1 Bc5 9.Be3 Be3 10.fe3 Ba6 11.Nf3 Nbd7 12.Nc3 0-0 13.Nd4 Rfd8 14.Nc6 Re8 15.h3 Nd5 16.Nd5 ed5 17.g4 Re3 18.Nb4 Bc4 19.Nc2 Re4 20.e3 Bf1 21.Rf1 c5 22.Ke2 Rae8 23.a5 d4 24.Kd3 de3 25.Rae1 c4 26.Kc3 Nc5 27.Nd4 e2 28.Ne2 Re2 29.Re2 Re2 30.Kc4 Re5 31.Kd4 Nd7 32.Rd1 Ra5 33.Kc3 Rc5 34.Kb4 Rc7 35.h4 g6 36.h5 Kg7 37.hg6 hg6 38.g5 Ne5 39.Ka5 Nf3 40.Rd5 f5 41.gf6 Kf6 42.Rd6 Kf5 43.Rd8 g5 44.Rf8 Kg4 White resigned 0-1. themuttsknutts - rustea (2270), ChessWorld.net, 2013.

4.d4 dc5 5.dc5? Qd1-+ 6.Kd1 Nc6 7.Bd2 g6 8.Bc3 Bg7 (8...Ne4 9.Bh8 Nf2 10.Ke1 Nh1 11.a3-+) 9.Nd2 (9.b5 Nb4=+) 9...Bd7 (9...Nb4 10.e4-/+ (10.Bb4? Ng4-+)) 10.f3 (10.b5 Nd8 11.e4 c6+=) 10...b6 (10...Nh5 11.Bg7 Ng7 12.b5=+) 11.e4 (11.b5!? Na5 12.c6=) 11...bc5 12.bc5 0-0 13.Ba6 Bc8 (13...Rab8 14.Ke2=+) 14.Bc8 Rac8 15.Ne2 Nh5 16.g4 (16.Kc2!?+=) 16...Bc3=+ 17.Nc3 Nf4 18.Rb1 Rb8 19.Rb8 Rb8 20.Ne2 (20.Nb3 e5=+) 20...Ne2 (20...Nd3!? 21.Kc2 Ncb4 22.Kc3 Nc5-/+) 21.Ke2=+ Nd4 22.Ke3 Nc2 23.Ke2 Rb2 24.Rb1 Rb1 (24...Ra2 25.Rb7 c6 26.Nc4=+) 25.Nb1= Nb4 (25...e5=) 26.a4 (26.Nc3 Na6+=) 26...c6 (26...Na6 27.c6 Nb4 28.Nc3=+) 27.f4 (better 27.Nd2!?+=) 27...Na6=+ 28.Nc3 ½-½. WarlpiriMan – styggman, ChessWorld.net, 2004. (=1.c4 Nf6 2.c5 e6 3.b4 d6)

4.d4 Be7 5.Bb2 0-0 6.e4 d5 (better 6...Ne4 7.Bd3 Nf6-/+) 7.e5+= Ne8 8.Bd3 h6 9.Nf3 b6 10.Nbd2 a5 11.a3 ab4 (11...c6 12.0-0=) 12.ab4 Ra1 13.Qa1 bc5 14.dc5 Nc6? (14...f6+/-) 15.b5?? (better 15.Qa4 Nb8 16.c6 Nc6 17.Qc6 Bb4 18.Bb5+-) 15...Nb4= 16.Qb1 (16.Bb1 Bc5 17.Bd4 Be7=) 16...Bc5 17.Bd4 Nd3 18.Qd3 Bd4 19.Nd4 Qe7 (19...Qg5 20.Qg3 f6 21.Qg5 hg5 22.Nc6-/+) 20.0-0 (20.Nc6 Qg5 21.0-0 Bd7+=) 20...Qg5 (20...Bd7 21.N2f3=) 21.f4 (21.N2f3 Qg4+=) 21...Qg6 (21...Qe7 22.Qc3=) 22.f5 (22.Qg6 fg6 23.N2b3 g5+/-) 22...ef5= 23.N2f3 (23.Nc6 Kh7=) 23...f4 (23...Qb6 24.Kh1=+) 24.Qb3 (24.Qg6 fg6 25.Nc6 Bf5=) 24...Be6=+ 25.Rc1 Qe4 (25...Kh7 26.Qb4 Qd3 27.Kh1=+) 26.Re1= Qg6 27.Ne6 (27.Nc6 Kh7=) 27...Qe6 (27...fe6 28.Nd4=+) 28.Nd4 Qg4 (better 28...Qb6!? 29.Rd1 c5 30.bc6 Qb3 31.Nb3 Nc7=+) 29.Qd5+= h5 (29...g6 30.e6 Nf6 31.Qc6 fe6 32.Ne6=) 30.e6 (better 30.Rf1+/-) 30...f3? (better 30...Nf6 31.Qa2 Qg5+=) 31.ef7+- Rf7?? (31...Kh7 32.Nf3 Nd6+-) 32.Re8 Kh7 33.Nf3 Rf3 34.Qf3 Qf3 (34...Qd4 35.Qe3 Qa1 36.Qe1 Qd4 37.Kh1 Qc4+-) 35.gf3 h4 36.Re7 Kh6 37.Rc7 g6 38.Rc6 (38.b6 Kh5 39.b7 Kh6 40.b8Q Kg5 41.Qf8 Kh5 42.Qf6 g5 43.Rh7) 38...Kh5 (38...Kh7 39.b6 Kg7 40.b7 Kg8 41.Rc7 Kf8 42.b8Q) 39.Rc5 (39.b6 Kh6 40.b7 Kg7 41.b8Q h3 42.Qe5 Kh7 43.Rc7 Kh6 44.f4 g5 45.Qg5) 39...Kh6 (39...g5 40.b6 Kg6 41.b7 Kf6 42.b8Q Kf7 43.Rc6 h3 44.Qb7 Ke8 45.Rc8) 40.Rc4 (40.b6 Kh7 41.b7 Kh6 42.b8Q Kg7 43.Qe5 Kh7 44.Qe7 Kh6 45.Qf8 Kh7 46.Rc7) 40...h3 (40...g5 41.b6 Kg7 42.b7 g4 43.b8Q g3 44.Qa7 Kf6 45.Rc6 Ke5 46.Qc5 Kf4 47.Rf6) 41.Rg4 (41.b6 Kh7 42.b7 Kh6 43.b8Q Kg7 44.Qe5 Kg8 45.Qe7 g5 46.Rc8) 41...Kg7 Black threatens to counter with b6 42.Kf2 Kf6 43.Kg3 g5 44.Kh3 (44.b6 Kg6 45.b7 Kf6 46.b8Q Kf7 47.Qc7 Ke6 48.Rd4 Kf5 49.Qf7 Ke5 50.Rd5) 44...Ke6 45.Kg3 Kd5 46.Rg5 Kc4 47.h4 (47.b6 Kb4 48.b7 Kb3 49.b8Q Kc4 50.Qb5 Kc3 51.Qc6 Kd3 52.Kf2 Kd4 53.Rd5) 47...Kd3 (47...Kb4 48.b6 Ka4 49.b7 Kb4 50.b8Q Kc4 51.Qb5 Kc3 52.Qc6 Kd3 53.Kf2 Kd4 54.Rd5) 48.h5 (48.b6 Kd2 49.b7 Kd3 50.b8Q Kd2 51.Qd6 Kc3 52.Rc5 Kb3 53.Qb6 Ka4 54.Ra5) 48...Ke2 49.h6 Kf1 (49...Kd2 50.h7 Kc2 51.Rc5 Kb2 52.h8Q Ka3 53.Qc3 Ka2 54.b6 Kb1 55.Rb5 Ka2 56.Qa5) 50.h7 (50.Re5 Kg1 51.Re1) 50...Ke2 (50...Ke1 51.h8Q Kd2 52.Rc5 Ke2 53.Qe5 Kd3 54.Kf2 Kd2 55.Qd6) 51.h8Q Kf1 (51...Kd2 52.Qd4 Kc2 53.Rc5 Kb3 54.Rc3 Ka2 55.Qd2 Kb1 56.Rc1) 52.Qf8 (52.Re5 Kg1 53.Re1) 52...Kg1 (52...Ke2 53.Qd6 Ke1 54.Re5 Kf1 55.Qd1) 53.Qe8 (53.Qc5 Kf1 54.Qf2) 53...Kh1 (53...Kf1 54.b6 Kg1 55.Qe1) 54.Re5 (54.Qe1) 54...Kg1 55.Re1 1-0. haonhien (2115) - cheesedout (2035), Rated Bullet game, lichess.org, 2013.

4.cd6 Qd6 5.a3=+ Be7 6.Qa4 (6.Nf3 0-0=+) 6...c6 7.Bb2 0-0 8.Bf6 (8.Nf3 Nbd7=+) 8...Bf6-/+ (8...gf6?! 9.Nf3=) 9.Ra2 (9.Nc3 b5 10.Qc2 e5=+) 9...Rd8 10.d3 (10.Nc3 b5 11.Qc2 Qd7=+) 10...c5 (10...a5 11.Nf3-/+) 11.bc5 Qc5 12.Rc2 Qe7 13.Qc4 Nc6 14.g4 Ne5 15.Qf4 Ng6 16.Qc7 Qe8 17.Qg3 e5 18.g5 Be7 19.h4 Bd6 20.Nh3 e4 21.Qg2? ed3 22.Rd2 de2 23.Re2 Qa4 24.Rd2 Bh3 25.Rh3 Nf4 26.Qf3 Nh3 27.Bh3 Qb5 28.Qd1 Bc7 29.Bd7 Qe5 30.Qe2 Qh2 31.Qe4 a6 32.Qb7 Bf4 33.Rd3 Rab8 34.Bf5 Rd3 35.Bh7 Kf8 36.Qb8 Bb8 37.Bd3 Qh4 38.g6 fg6 39.Bg6 Qh1 40.Ke2 Qh2 41.Nd2 Qe5 42.Ne4 Qb2 43.Kf3 Qa3 44.Kg4 Qe7 45.Ng5 a5 46.Nh7 Kg8 47.Kf5 a4 48.Ng5 Qf6 (49.Kg4 Qg6-+) 0-1. xCalvin - ahmed sharkawy_1, ChessWorld.net, 2005.

4.cd6 Bd6 5.a3. 2good2be1 - DynamicPossibilities, ChessWorld.net, 2004.

4.Bd2 Qe7 5.a3 (5.Nf3 Bd2 6.Nbd2 d6-/+) 5...Bd2 6.Nd2 d5 (6...d6 7.Ngf3-/+) 7.e3 0-0 8.Ngf3 c5 9.dc5 Qc5 10.cd5 Nd5 11.Bd3 Nc3 (better 11...Rd8 12.Qc2 Qc2 13.Bc2 Nc6-/+) 12.Qc2+= g6? (better 12...Bd7 13.Rc1 Rc8+=) 13.Nb1+- 1-0. damavand1 (2275) - smmnna (1935), Rated Blitz game, lichess.org, 2014. (=1.c4 Nf6 2.b4 e6)

4.Bd2 Be7-/+.

4.Nd2 Bc3 5.Rb1 Bd4 6.e3-+.

4.Nd2 Nc6 5.Ngf3 (5.Rb1 0-0-/+) 5...d5 (5...Bc3 6.Rb1 Nd4 7.Nd4 Bd4 8.e3-+) 6.c5 (6.e3 0-0-/+) 6...Bd2 (6...Bc3!? 7.Rb1 Bd4 (7...Nd4?! 8.Nd4 Ne4 9.e3+=) 8.Nd4 Nd4-+) 7.Qd2 (7.Bd2 Ne4+=) 7...0-0 8.Ne5 (8.Qb2!?-/+) 8...Ne5-+ 9.de5 Nd7 (9...Ne4 10.Qb4 a5 11.Qd4-+) 10.Qg5 (10.Qc3 f6-/+) 10...Qg5 (10...Nc5 11.Rb1-+) 11.Bg5 Ne5 (11...Nc5?! 12.Be7 Nd7 13.Bf8 Kf8 14.f4+=) 12.g3 (12.Bf4 f6-+) 12...f6 (12...Nd7 13.Rc1 h6 14.Bd2-+) 13.Bd2 (13.Bf4 g5 14.Be5 fe5-+) 13...c6 0–1. ridgeback – echuck215, gameknot.com, 2016. (=1.c4 Nf6 2.b4 e6)

4.a3 Bd6-/+.

4.a3 Be7 5.d4-/+.

4.Ba3 Ba3 5.Na3 d6 6.Nf3-/+.

4.Ba3 Qe7 5.Bb4 Qb4 6.Nc3 Nc6 7.Rb1 Qe7 8.Nb5 0-0 9.Nc7=+ Rb8 10.Nb5 a6 11.Nd4 Nd4 12.ed4 d5 13.c5 Ne4 14.c6 b5 15.Rc1 Qc7 16.Bd3 Rb6 17.Nf3? Rc6-+ 18.Rc6 Qc6 19.Ne5 Qb6 20.f3? Qd4 21.fe4 Qe5 22.0-0 Qd4 23.Rf2 Qd3 24.e5 Qd4 25.Qh5 f6 26.Qh4 Qh4 (27.ef6 Rf6 28.Rf6 gf6-+) 0–1. ian5300 – melr11, ChessWorld.net, 2005.

4.Bb2 0-0 5.Nf3 d5 6.cd5 ed5 7.Nc3 Bg4 8.Be2 Re8 9.Nd4 Be2 10.Qe2 c5 11.Nf5 d4 12.Nb5 de3 13.Ne3 a6 14.Bf6 Qf6 15.Nc7 Qa1 16.Qd1 Qd1 17.Kd1 Nc6 18.Ne8 Re8 19.Nd5 f6 20.Nc7 Rd8 21.Re1 Rd2 22.Kc1 Rc2 23.Kc2 Be1 24.Kd3 Bf2 25.Kc4 b5 26.Nb5 ab5 27.Kb5 Nd4 28.Kc5 Nf5 29.Kb5 Ne3 30.a4 Ng2 31.a5 Nh4 32.a6 Nf3 33.Kc6 Nh2 34.Kd5 Kf7 35.Ke4 Ba7 36.Kd5 h5 37.Kc6 h4 38.Kb7 Bg1 39.a7 Ba7 40.Ka7 h3 0–1. guest31 – guest1281, ICC, 1999.

4.Qf3 0-0 5.Bb2 Re8 6.e4 Be7?? 7.e5+– Nc6 8.ef6 Bf6 9.Bf6 Qf6 10.Nc3 Qe5 11.Qe3 Qe3 12.de3 Nb4 13.Rb1 a5 14.Rb2 b6 15.Nb5 Re7? 16.Nc7+– Ra7 17.Nb5 Rb7 18.a3 Nc6 19.Nd6 Rc7 20.Rb6 h6 21.Nf3 f6 22.c5 e5 23.Bc4 Kh7 24.Nh4 g6 25.Bd3 Na7 26.Ng6 Re6 27.Nf8 (27...Kh8 28.Ne6 de6 29.Nc8 Nc8 30.Rb5+–) 1–0. ian5300 – ahmed sharkawy_1, ChessWorld.net, 2005.

3.Qb3 Bg7 4.Bb2 0-0 5.e3 d6 6.d4 c5 7.bc5 dc5 8.d5 e6 9.de6 Be6 10.Nc3 Nc6 11.Rd1 Qa5 12.Bd3 (12.Rd2 Rfd8 13.Nf3 b6=+) 12...Ne5 (12...Rfd8 A) 13.Qb7?? Ne5 14.Bc2 Rab8 15.Rd8 Qd8 (15...Rd8?! 16.Qb5 Qc7 17.Bc1-/+) 16.Qb8 Qb8-+; B) 13.Nf3 Nb4 14.Bb1-/+) 13.Be2 Qb4 (better 13...Rad8 14.Rd8 Rd8-/+) 14.Qb4+= cb4 15.Nd5 Nd5 (15...Ne4!?=) 16.cd5+/- Bf5 17.f4 Nf3 18.gf3 Bb2 19.e4 Bc3 20.Kf2 Bd7 21.h4 a5 (21...Ba4 22.Rf1=) 22.Nh3 a4 23.Ng5? (23.Ke3!?=) 23...b3 (23...h6!? 24.Nh3 b3 25.ab3 a3-+) 24.ab3=+ a3 25.e5 Bf5 26.Bc4? (better 26.Ne4!? Be4 27.fe4=+) 26...a2-+ 27.e6 a1Q 28.Ra1 Ba1 29.e7 Rfe8 (29...Rfc8!? 30.d6 Kg7-/+) 30.d6= Bd4 31.Kg3 Be6 32.Be6 fe6 33.Ne6 Bf6 (33...Bb6!?=) 34.Nc7+/- Be7 (34...Kf7+/-) 35.Na8 (better 35.de7 Rab8 36.Ne8 Re8 37.Re1+-) 35...Bd6= 36.Nb6 Rf8 The isolani on f4 becomes a target 37.Nd5 Rf5 38.Rd1 Kf7 39.Rd4 Ke6 40.Ne3 Rb5 41.Re4 Kf6 42.b4 h6 (42...Bb4? 43.Rb4 Rb4 44.Nd5 Kf5 45.Nb4+-) 43.Kg4 h5 (43...Bb4? 44.Rb4 h5 45.Kg3 Rb4 46.Nd5 Ke6 47.Nb4+-) 44.Kg3 Kf7 (44...Bb4? 45.Rb4 Rb4 46.Nd5 Ke6 47.Nb4+-) 45.Nc2 Rf5 46.Rc4 Ke6 (46...Ke6 47.Nd4 Kd5 48.Nf5 gf5+-). bjoernsen (2325) - imdejong (2440), Rated blitz game, lichess.org, 2020.

3.b5 Bg7 4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5).

3.c5 Bg7 4.d4 (4.Bb2 0-0=+) 4...c6 (4...Nc6!?=+) 5.e3 a5 6.b5 d6 7.Bc4 (better 7.cd6!? ed6 8.Nf3=) 7...dc5-/+ 8.Qd3 (8.Nf3 cd4 9.ed4 Bg4-/+) 8...cd4 9.Bb3?? (9.ed4!? Bf5 10.Qd1 Nd5-+) 9...c5 (better 9...de3 10.Qd8 Kd8-+) 10.Qc4 (10.ed4 a4 11.Bc4 Bf5-+) 10...0-0 (10...Be6 11.Qa4 de3 12.Be6 fe6 13.Nd2-+) 11.Nf3 (11.ed4 Be6 12.Qc2 Qd4 13.Bb2-+) 11...de3 12.Be3 (12.Nc3 a4! 13.Ba4-+) 12...b6 (better 12...Ng4 13.Ng5 Ba1 14.Nf7 Ne3 15.fe3-+) 13.Ne5? (better 13.Na3-+) 13...Be6 14.Nd2 (14.Qc2 Bb3 15.Qb3-+) 14...Bc4 15.Nec4 (15.Ndc4 Qc7 16.0-0-0 Ne4-+) 15...Nbd7 (15...Nd5 16.Rc1 Nb4 17.0-0-+) 16.0-0-0 (16.a4 Nd5 17.Rd1 Nc3-+) 16...a4 17.Bc2 Qc7 (17...Nd5 18.Ne4 e6 19.a3-+) 18.Nf3 Rfd8 19.Nb2 (19.a3 Ng4-+) 19...Ng4 20.h3 (20.Nc4 f5 21.Ng5 Nf8 22.Rd8 Rd8-+) 20...Ne3 21.fe3 Ne5 (better 21...c4 22.Nd4 Qc5 23.Rhf1-+) 22.Ba4 (22.Be4-+) 22...Nf3 23.gf3 Bb2 (23...Qe5 24.Rh2 Qh2 25.Rd4 cd4 26.e4 Rac8 27.Nc4 Rc4 28.Kb1 Qd2 29.Bc2 Qc2 30.Ka1 Qc1) 24.Kb2 Ra4 25.Kb3 Rd1 26.Rd1 Rb4 (26...Qh2 27.Rd8 Kg7 28.a3 c4 29.Kc3 Ra3 30.Kc4 Qc7 31.Kd5 e6 32.Ke4 f5 33.Kd4 Qc3) 27.Kc3 Rb5 (27...Qe5 28.Kd3 c4 29.Ke2 Rb2 30.Ke1 Qe3 31.Kf1 Qf2) 28.Kc4 Rb4 29.Kc3 Qe5 30.Kd2 (30.Rd4 Qe3 31.Kc2 Qe2 32.Kc3 Qb2 33.Kd3 Rd4 34.Ke3 Qd2) 30...Rb2 31.Ke1 (31.Kd3 Qf5 32.e4 Qf3 33.Kc4 Qe4 34.Rd4 Qd4) 31…Qe3 (31...Qe3 32.Kf1 Qf2) 0-1. valla - paoloone (2125), ChessWorld.net, 2020. (=1.c4 Nf6 2.b4 g6)

3.d4 e5 4.de5 Ng4+=.

3.e3 a5 4.b5 c5 (4...Bg7 5.d4=) 5.a4 (5.Bb2 Bg7=) 5...e5 (5...Bg7 6.d4=) 6.Nc3 (6.d4 ed4 7.ed4 d5=) 6...Bg7 (6...d5 7.cd5 Nd5 8.Bb2=) 7.e4 d6 8.Be2 Nbd7 (8...0-0 9.Nf3=) 9.d3 Nf8 (9...Nb6 10.Nf3+=) 10.Nf3 Ne6 11.0-0 0-0 12.Qb3 (12.Rb1 Nd4+=) 12...b6 (12...Nd4 13.Nd4 cd4 14.Nd5=) 13.Nd5 (13.Qc2 Nd4 14.Nd4 ed4=) 13...Nd5 14.cd5 Nf4 (14...Nd4 15.Nd4 ed4 16.Bd2=) 15.Bd1 (15.Bf4 ef4 16.Rac1 g5=) 15...Bd7 (15...f5 16.Bf4 ef4 17.Rc1=) 16.Ra2 (16.Bf4 ef4 17.Rc1 Rc8=) 16...Rc8 (16...f5 17.Bf4 ef4 18.Rc2=) 17.Be3 f5 18.Qc3 (18.Rc2 Qf6=) 18...Nh5 (18...c4 19.Bf4 ef4 20.Qd2+=) 19.Bg5 (19.Qc4 Nf6=) 19...Bf6 (19...Nf6 20.Re1=) 20.Qd2 (20.Bh6 fe4 21.Bf8 ef3 22.Bd6 Bg7+=) 20...fe4 (20...Bg5 21.Qg5 Qg5 22.Ng5-/+) 21.de4= Bg5 22.Ng5 Rf4 23.Bh5 Qg5 (23...gh5 24.Ne6 Be6 25.de6 Re4 26.Qh6+=) 24.Bd1 (24.Bf3 Qf6=) 24...Qe7 (24...h5 25.Qe3=) 25.Qc2 (25.Qe3 Qg5=) 25...Be8 (25...Rc7 26.Qc4=) 26.Ra3 g5 (26...Bd7 27.Rf3=) 27.g3 (27.Rf3 Bd7=) 27...Rf6= 28.Qd2 h6 29.Rf3 Bd7 30.Kg2 Rcf8 31.Rf6 Rf6 32.Qe3 Qe8 33.f4 gf4 34.gf4 ef4 35.Rf4 Rg6 36.Kf2 Qe5 37.Qf3 Qd4 38.Kf1?? (better is 38.Ke2+=). Hoelldorfer,August – Schratzenstaller,Albert (1810), 10sen.BayEM Schney, 1998.

3.Nf3 d6 4.Nc3 Bg7 5.d4 0-0 6.d5? Nd5!-+ 7.cd5 Bc3 8.Bd2 Ba1 9.Qa1 e5 (9...f6 10.h4 Bg4 11.Qd4 Qc8 12.Nh2 Bf5 13.e4) 10.e4 (10.de6 f6 11.Nd4 Qe7 12.Qc3 Nc6 13.Nc6) 10...f5 (10...Nd7 11.Bd3 a5 12.ba5 Nc5 13.Qb1) 11.Bd3 (11.ef5 Bf5 12.Bh6 Re8 13.Bb5) 11...fe4 (11...a5 12.ba5 Nd7 13.0-0) 12.Be4 Bf5 13.Qb1 Nd7 14.Bh6 Be4 15.Qe4 Rf5 16.g4 (16.0-0-+) 16...Nf6 17.Qe2 Ng4 18.Rg1 (18.Bg5 Qd7 19.h3-+) 18...Nh6 19.Qe3 (19.Rg2 c6 20.dc6 bc6-+) 19...Rf4 20.Ng5 (20.Qc3 Re4 21.Kd1 Qd7-+) 20...Ng4 21.Ne6 (21.Rg4 Rg4 22.Nf3 Rb4-+) 21...Ne3 22.Nd8 Nc2 23.Kd1 Rf2 24.Nb7 e4 25.Re1 e3 26.Na5 Rd2 27.Kc1 Ne1 28.h4 Rf8 (28...Rf8 29.Nb3 Nd3 30.Kb1 Rf1 31.Nc1 Rc1; 28...Nd3 29.Kb1 Rf8 30.Nb3 Rf1 31.Nc1 Rc1) 0–1. Brandl,Erwin (1825) – Malmstroem,Jan (2210), RSLE–2010, 2010. (=1.c4 Nf6 2.b4 g6)

3.g3 b6 4.Bg2= Nc6 5.a3?? (better is 5.b5+–) 5...Bb7 6.Bb2 Bg7 7.d3 (7.b5 Na5 8.Bb7 Nb7=) 7...0-0 8.Nd2 e6 (8...a5 9.b5+–) 9.Ngf3 Ne7 (9...a5 10.b5 Ne7 11.0-0=) 10.0-0+= d6 11.Rc1 c5 12.b5 a6 13.a4 ab5 14.ab5 d5 15.Ne5 Nd7 16.f4 Nf5 17.Rf3 (17.Ra1!?=) 17...d4 18.Nc6 Bc6 19.Ne4?? (better is 19.bc6 Ne3 20.Re3 de3 21.Bg7 Kg7 22.Nf1=+) 0–1. Freyser – DanielMartin, ChessWorld.net, 2004.

3.g3 Nc6!?=+.

4.Bb2 0-0 5.Nc3 d6 6.d4 c5 7.e3 Bd7 8.Nf3 Nc6 9.b5 Nb8 10.Bd3 cd4 11.ed4 Nh5 12.0-0 Bg4 13.Be4 Qd7 14.h3 Bh3? 15.gh3+– Qh3? 16.Bb7 Qg4 17.Kh1 Nf4 18.Nh2 Qh4 19.Ba8 Nh3 20.Qe2 Bd4 21.Nd5 Bb2 22.Ne7 Kg7 23.Qb2 f6 24.Bd5 Nd7 25.Rae1 Ne5 26.Re4 Nf4 27.Qd4 Nf3 28.Nf5! gf5 29.Re7 Rf7 30.Rf7 Kg6 31.Qf4 Qf4 32.Nf3 Qh6 33.Kg2 Qf4 34.Ra7 Qg4 35.Kh1 Qh3 36.Nh2 Qh6 37.Rg1 Kh5 38.Bf7 Kh4 39.Nf3 Kh3 40.Rg3 1–0. tired rook – DanielMartin, ChessWorld.net, 2004.

4.d4 d5 5.e3 c6 6.cd5 cd5 7.Nf3 0-0 8.Bd3 Bg4 9.0-0 Ne4 10.Qb3 Bf3 11.gf3 Ng5 12.f4 Ne4 13.f3 Nd6 14.Qd5+/– e6 15.Qg5 Qc7 16.Ra2 h6 17.Qg4 Kh7 18.h4 h5? 19.Qh5+– Kg8 20.Qg5 Nf5 21.h5 Bh6 22.Qg4 Kh7 23.hg6 fg6 (24.Rh2 Kg7+–). tired rook – BeerClark, ChessWorld.net, 2004.

4.Bb2 0-0 5.b5 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0-0 5.c4).

4.Bb2 0-0 5.Nf3 c6 6.e3 d5 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 c6 6.d4 d5 7.a4).

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.c4).

3.Bb2 a5 4.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 g6 4.c4).

(--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7).

4.a3 (--> 1.b4 Nf6 2.Bb2 g6 3.a3 Bg7 4.c4).

4.b5 a6 5.a4 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0-0 5.c4 a6).

4.Nc3 0-0 5.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.d4 0-0 5.Nc3).

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

4.d4 0-0 5.Nd2 d6 6.Ngf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.d4 0-0 6.Nbd2).

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

4.d4 0-0 5.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.d4 0-0).

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

4.e3 0-0 5.Nf3 b6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 b6).

4.e3 d6 5.Be2 Nbd7 6.Nf3 e5 7.d3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Nbd7).

4.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4).

4.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0).

4.Nf3 0-0 5.e3 d6 6.d4 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 Nbd7).

4.Nf3 0-0 5.g3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.g3).

4.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6).

4.Nf3 d6 5.d4 0-0 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4).

4.Nf3 d6 5.e3 0-0 6.Nc3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0-0).

4.Rb1 0-0 5.e4 d6 6.Be2 (6.Nf3 c5=) 6...c5 7.bc5 dc5 8.e5 (8.Bb2 Na6=) 8...Ne8 (8...Nfd7 9.f4=+) 9.f4 (9.Ba3 Nd7 10.Nf3 Ne5 11.Bc5 b6=) 9...Nc6 (9...f6 10.e6=+) 10.Bf3 (10.Ba3 b6=+) 10...Nb4=+ 11.d4 Bf5 (11...Qd4?! 12.Qd4 Nc2 13.Kf2 cd4 14.Nd5=) 12.Rb4 (12.Ne4 Na2 13.Be3 Be4 14.Be4 Nc3-+) 12...cb4-/+ 13.Nd5 a5 (13...Rc8 14.Ne3-/+) 14.Ne2 Rb8 15.g4 (15.Qb3 b5 16.cb5 Be6-+) 15...Bc8 (better is 15...Bd7-/+) 16.g5 (16.Ne3!?-/+) 16...b5-+ 17.Ne3 bc4 18.Nc4 Ba6 (18...Bb7 19.Bb7 Rb7 20.Ne3-+) 19.Ne3 Nc7 (19...Qd7 20.Ng3-+) 20.f5 f6 (20...gf5 21.Nf5 Bc4 22.Qc2-+) 21.gf6-/+ ef6 22.e6 Re8 23.Nf4 Bh6 24.Ng4 Bf4 25.Bf4-/+ Ne6 26.fe6= Re6 27.Kf2 Rc8 28.d5 Re8 29.Qd4 Rf8 30.d6 Bc4?? 31.Bg5! Ba2 32.Nf6 (32...Rf6 33.Bf6 Rc2 34.Kg3+–) 1–0. Andersson,Lars H – Andersson,Paul, corr SSKK 1–462, 1994.

4.Rb1 d6 5.e4 e5 6.d3 c6 7.f4 Bg4 8.Be2 Be2 9.Nge2 ef4 10.Bf4 Nh5 11.0-0 0-0 12.b5 Qh4 13.Bd6 Re8 14.c5 Nd7 15.bc6 bc6 16.Rb7 Ne5 17.d4 Ng4 18.Qb3 Rad8 19.Qf7 Kh8 20.Bg3 Qg5 21.Bf4 Qh4 22.h3 Ngf6 23.Be5 Rf8 24.Qe7 Rde8 25.Qc7 Rc8 26.Qe7 Rce8 27.Qd6 Ne4?? (27...Rd8) 28.Rf8 Rf8 29.Qf8# 1–0. prezes – Trkn, itsyourturn.com, 2000.

4.d4 0-0 5.Bb2 a5 6.b5 b6 7.e4 Bb7 8.Bd3 d6 9.f4 Nbd7 10.Nf3 e5 11.fe5 de5 12.d5 Nc5 13.0-0 (worse 13.Ne5 Re8 14.0-0 Re5-+) 13...Ng4 14.Qe2 f5 15.h3 Nd3 16.Qd3 Nf6 (better 16...Nh6!?+/-) 17.ef5+- (17.Ne5?! Qe7 18.Rae1 Qe5 19.ef5 Qd6 20.fg6 h6+=) 17...Qe7 18.fg6 (better 18.Rae1!? Qc5 19.Kh1+-) 18...e4+/- 19.gh7 Kh8? (better 19...Nh7 20.Qe4 Qe4 21.Ne4 Bb2+=) 20.Rae1+- Qc5 (20...ed3?? 21.Re7 Bc8 22.Na4 Kh7 23.Rc7+-) 21.Qd4 ef3 22.Qc5 bc5 23.Re7 (23.Rf3?! Rfe8 24.Re8 Ne8+-) 23...fg2? (better 23...Rae8 24.Re8 Ne8+/-) 24.Kg2+- a4? (24...Nh7 25.Rc7 Rf1 26.Kf1 Bc8+-) 25.Rc7 a3 (25...Nd5 26.cd5 (26.Nd5?! Bd5 27.cd5 Bb2+-) 26...Rf1 27.Kf1+- (27.Rb7 Raf8 28.Rg7 Kg7 29.Ne4 Kh7-/+)) 26.Ba1 (26.Rb7 ab2 27.Rb1 Ra3=+) 26...Bc8 (26...Nd5 27.Nd5 Ba1 28.Ra1 Bd5 29.cd5 Rae8 30.Rc5 Re5+-) 27.Ne4 Ne8 (27...Rb8+-) 28.Rf8 Kh7 1-0. Minister007 (2320) - Kung_Fu_Panda3 (2300), Rated blitz game, lichess.org, 2020.

4.d4 Nc6=.

4.Nf3 0-0 5.Rb1 d5 6.cd5 Nd5 7.Nd5 Qd5 8.Qc2 c6 9.e4 Qd6 10.d4 Bd4 11.Nd4 e5?? (better is 11...Qd4 12.Be3 Qf6=) 12.Nf3+– Be6 13.Be2 Na6 (13...f5 14.ef5 gf5 15.Be3+–) 14.Ba6 ba6 15.0-0 Rfd8 16.Bg5 Rd7 17.Rfd1 Qc7 18.Rd7 Bd7 19.Bf6 Qd6 (19...Re8 20.Qc5 Qb6 21.Ne5 (< 21.Be5 Qc5 22.bc5 Bg4+–) 21...Qc5 22.bc5+–) 20.Be5 Qe6 21.Qb2 Kf8 (21...a5 22.Ng5 Qe7 23.Bf6 Qb4 24.Qc2+–) 22.Ng5 Qg4 23.Nh7 Ke7 24.Bf6 Ke8 25.Qe5 Qe6 26.Qc5 (26...Bc8 27.Qf8 Kd7 28.Qd8) 1–0. Argento1960 – DanielMartin, ChessWorld.net, 2004.

4.Nf3 0-0 5.e3. Argento1960 – sugamuxi, ChessWorld.net, 2004.

4.Nf3 b6 5.Bb2 (5.d4 c5=) 5...a6 (5...Bb7=) 6.e4 (6.Nd5!?=) 6...Ne4=+ 7.Qc2 (7.Ne4 Bb2) 7...Nd6 (7...Nc3 8.Bc3 0-0=+) 8.d4 (8.c5 Nf5=+) 8...Bb7 (better is 8...Nc6-/+) 9.0-0-0? (9.d5 e6=+) 9...Nc6 (9...Bf3 10.gf3 c5 11.dc5 bc5 12.Rd6 cb4+=) 10.a3-/+ Nf5 (10...0-0 11.d5 Ne5 12.Ne5 Be5 13.Re1-/+) 11.Ne2 (better is 11.Ne4 d5 12.cd5=+) 11...e6 (11...d5 12.g4 Nh6 13.g5-/+) 12.Ng3 (12.d5 Nce7 13.g4+/–) 12...Nce7-/+ 13.Be2 (13.d5 0-0-/+) 13...0-0 14.Rhg1 (14.Rde1 d6-/+) 14...Ng3 (14...b5 15.cb5 ab5 16.Bb5 Ng3 17.hg3-+) 15.hg3 d6 (15...b5 16.cb5 ab5 17.Bb5 Bf3 18.gf3-/+) 16.Nh2 (better is 16.Rh1-/+) 16...c5?? (16...a5 17.b5-+) 17.Ng4?? (better is 17.dc5 Bh6 18.f4=) 17...f5 18.Ne3 Nc6?? 19.d5? Bb2 20.Qb2-/+ ed5 21.Nd5 Ne5 22.f4 Nf7?? 23.Nf6+– Kg7 24.Nh5 (24...Kg8 25.Qg7) 1–0. janbs – dugmak, ChessWorld.net, 2004.

4.a4 Bg7 5.d5? (better 5.Nf3-/+) 5...Nd5!-+ 6.Ra3 (6.cd5 Ba1 Discovered attack; 6.Qd5 Ba1 Discovered attack) 6...Nb4 7.Qb3 (7.Nc3 0-0-+) 7...c5 (better 7...N8c6 8.Bb2 0-0-+) 8.h3 (8.Bb2 Bb2 9.Qb2-+) 8...Bf5 (8...N8c6 9.Nf3 Bf5 10.e4 Be4 11.Nc3 Bf3 12.gf3-+) 9.Nd2 N8c6 10.g4 Nd4 11.Bg2 (11.Qg3 Nbc2 12.Kd1-+) 11...Nb3 12.Nb3 Nc2 13.Kf1 Na3 14.Ba3 Bc2 15.Bb7 Rb8 (better 15...Bb3!? 16.Nf3-+) 16.Bc6 Kf8 17.Nd2 Qa5 18.Ngf3 Qc3 19.Bc1 Rb6 (19...Bd1 20.Kg2 Qc1 21.a5-+) 20.Ba8 e6 (20...Bd1 21.a5 Rb4 22.Kg2 Qc1 23.Ne4-+) 21.h4 Ke7 22.Ne1 Ra8 23.h5 Qd4 (better 23...Qa1 24.Nb3 Bb3 25.a5 Qa5 26.hg6 hg6 27.Bg5 Kf8 28.Kg2-+) 24.hg6 hg6 (better 24...Qa1 25.Kg2 Qc1 26.Nef3-+) 25.f3 Rh8 (better 25...Qa1 26.a5 Rb4-+) 26.Rg1 Rh2 27.Nc2 (27.Ng2 Bf6 28.Ne4 Rb1 29.e3 Qe3 30.Nf2 Rc1 31.Nd1 Bd3) 27…Qf2 0-1. Paul593 - hwntw (2390) , ChessWorld.net, 2009.

4.Nc3 Bg7 5.Nf3 c6 6.e4 Nbd7 7.Bd3 b6 8.0-0 0-0 9.Re1 e6 (9...Bb7 10.Rb1+=) 10.e5 Ne8 (10...de5 11.de5 Ng4 12.Bf4+=) 11.Qa4+/– Bb7 12.Bg5 f6 13.ef6 Bf6 14.Bf6 Qf6 15.Be4 e5? (better is 15...a5!? 16.b5 cb5 17.Qb5 Be4 18.Ne4 Qe7+/–) 16.Bc6+– Bc6 17.Qc6 Rd8 18.Rad1 ed4 19.Nd5 Qg7 20.Re7 Rf7 21.Rf7 Qf7 22.Ng5 (22.Rd4?! Ndf6+–; 22.Nd4?! Ne5 23.Qb5 Rc8+/–) 22...Qg7 23.Ne6 Ne5 24.Qb5 (24.Nd8?! Nc6 25.Nc6 d3=+) 24...a6 (24...Qd7 25.Nd8 Qd8 26.Rd4 Nc7 27.Nc7 Qc7 28.Qd5 Nf7+–) 25.Qb6 Nc4 (25...Qd7 26.Nd8 d3+–) 26.Qd8 (26...Qf7 27.Nec7+–; 26.Ng7?! Nb6 27.Ne6 Rb8 28.Nb6 Rb6+/–) 1–0. b4_player (2210) – Fetzer (1940), GameColony.com, 2003.

4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.d4).

4.Nc3 0-0 5.Bb2 d6 6.e3 e5 7.d5 c6 8.e4 Nh5 9.Be2 Nf4 10.g3 Ne2 11.Nge2 cd5 12.cd5 a5 13.ba5 Bg4 14.0-0 Ra5 15.f3 Qb6 16.Kg2 Bf3 (16...Bc8!? 17.Rb1 f5=) 17.Rf3+= Qb2 18.Rb1 Qa3 19.Rb7 Na6 20.Nb5 (20.Qf1!? f6 21.Rb6+=) 20...Qa2= 21.Nd6 The pressure on the backward pawn f7 grows 21...Nc5 22.Rbf7 (22.Rc7!?=) 22...Rf7=+ 23.Rf7 (worse 23.Nf7 Ne4 24.Qd3 Qd5-+) 23...Ra6?? (23...Bf8 24.Rf8 Kf8-/+) 24.Rg7?? (better 24.Rc7 Rd6 25.Rc5+/-) 24...Kg7-+ 25.Nb5? (better 25.Ne8 Kg8 26.d6-+) 25...Ne4 26.Qd3 Nc5 27.Qe3 Qb2 (better 27...Qd5 28.Qf3 Qd7-+) 28.Nbc3 Nd7 29.Kh3 Ra3 (29...Qa1 30.Kg2-+) 30.d6? (30.Qg5 Qb4-/+ (30...Rc3?! 31.Qe7 Kh6 32.Nc3=)) 30...Qc2 (30...Qb8 31.Qd3-+) 31.g4 (31.Qe4 Qb3 (31...Rc3?! 32.Nc3 Qf2 33.Qd3=) 32.Kg2 h6-+) 31...h6 32.Kg3 Qb2 33.h4 Qa1 (better 33...Qb4!? 34.g5-+) 34.Kg2 Qe1 35.Qf2? (35.h5 Qh4 36.Qf3 gh5 37.gh5 Qg5 38.Kh2 Rb3-+) 35...Qf2 (35...Qd2 36.h5 Rc3 37.Nc3 Qc3 38.hg6-+) 36.Kf2 Kf6 (36...Nc5!? 37.h5-+) 37.Ne4 Ke6 38.N2c3 Rb3 (38...Nf6 39.Nf6 Kf6 40.Nd5 Ke6 41.Ne7-+) 39.Ke2 (better 39.g5 hg5 40.hg5-+) 39...Rb4 40.Kd3 Rb8 (40...Nb6!? 41.g5 hg5 42.hg5 Rd4 43.Ke2-+) 41.Kc4 Rf8 42.Kb5? (better 42.Nd5 Rf1 43.Nc7 Kf7 44.Kb5-+) 42...Rf4 43.Kc6 (43.g5 h5 (43...Rh4?! 44.gh6 Rh6 45.Kc6-+) 44.Kc4 Rh4-+) 43...Rg4 44.Nc5 (44.Nd2-+) 44...Nc5 45.Kc5 Rd4 46.Nb5 Rd5 47.Kc6 Rb5! 48.Kb5 Kd6 49.Kc4 Ke6 50.Kd3 Kf5 51.Ke3 g5 52.h5 g4 53.Kf2 Kg5 (53...Kf4 54.Kf1 g3 55.Ke2 e4 56.Kd2 e3 57.Kc2 g2 58.Kb3 e2 59.Kc3 e1Q 60.Kd4 g1Q 61.Kd5 Qe4 62.Kd6 Qb6 63.Kd7 Qee6) 54.Kg3 Kh5 (better 54...e4 55.Kf2-+) 55.Kg2 Kg5 56.Kf2 Kf5 57.Kg3 Kg5 58.Kg2?? (58.Kf2 Kf4 59.Kg2-+) 58...h5 59.Kf2 h4 60.Ke1 g3 (60...g3 61.Ke2 Kf4 62.Kd3 e4 63.Kd4 e3 64.Kc3 e2 65.Kc4 g2 66.Kc3 e1Q 67.Kd3 Qe4 68.Kd2 g1Q 69.Kc3 Qc1 70.Kb3 Qec4) 0-1. Minister007 (2340) - insight64 (2370), Rated blitz game, lichess.org, 2020.

4.Nc3 0-0 5.e4 d6 6.Nf3 a5 7.b5 Nbd7 8.Bd3 Re8 9.0-0 e5 10.d5 Nc5 11.h3 Nh5 12.Bg5 f6 13.Be3 Nd3 14.Qd3 b6 15.Rae1 Nf4 16.Bf4+/– ef4 17.Nd4 Bd7 18.Nce2 g5 19.Nc6 Bc6 20.dc6 Qe7 21.Nd4 Qe5 22.a3 Qc5 23.Nf5 Re5 24.Re2 Rae8 25.Rfe1 Bf8 26.Rd1 h6 27.Nd4 Kh7 28.Ree1 Bg7 29.Ra1 Kg8?? 30.Nb3+– Kf7 31.Nc5 Rc5 32.Rad1 Rce5 33.Kf1 R8e7 34.a4 Kf8 35.Qc2 Kf7 36.Rd5 Kg6 37.Re2 Re8 38.Qd3 Kf7 39.Kg1 R5e7 40.Kh2 Kg8 41.Qf3 Kh7 42.Qg4 Kg8 43.Qf5 Kh8 44.Re1 Kg8 45.Kg1 Kh8 46.Re2 Kg8 47.Rdd2 Re5 48.Qd7 R5e7 49.Qg4 Re5 50.Rd5 R5e7 51.Kh1 Kf8 52.Rdd2 Kg8 53.Kh2 Kf8 54.Kg1 Kg8 55.Qf3 Kf8 56.Kh2 Re5 57.Qd3 Rc5 58.Rd1 Rce5 59.Rde1 Kg8 60.Kg1 Kf8 61.Qf3 Kf7 62.Kh2 R5e7 (63.Qh5 Kg8+–). b4_player (2230) – djatelcom (1900), GameColony.com, 2003.

4.Nc3 0-0 5.e4 d6 6.Nf3 e5 7.de5 de5 8.Qd8 Rd8 9.Bg5 Re8 10.Nd5+= Nd5 11.cd5 Bg4 12.Rc1 Bf3 13.gf3 c6 14.d6 f6= 15.Be3 Bf8 16.Rd1 Rd8 17.f4 Rd6 18.fe5 fe5 19.Bc4 Kg7 20.Rd6 Bd6 21.b5 cb5 22.Bb5 a6 23.Bc4 Nc6 24.Ke2 Nd4 25.Bd4 ed4 26.Rd1 Bc5 27.Bd5 Rb8 28.e5 b6 29.Kd3 Rf8 30.Rd2 Rf4 31.Re2 Kf8 32.Bb7 a5 33.a4 Ke7 34.h3 Ke6 35.Bc8 Ke7 36.Bb7 g5 37.Be4 h5 38.f3 Ke6 39.Rg2 Be7 40.Kd4 Rf8 41.Bd5= Kf5 42.Re2 Rd8 43.Re4 Ba3 44.e6 Be7 45.Kc4 Rc8 46.Kb3 Kf6 47.Re1 Bb4 48.Re3 Bc5 49.Re2 Bb4 50.Bc4 Be7 51.Re1 Rc5 52.Re4 Re5 53.Re5 Ke5 54.Kc3 h4 55.Kd3 Bc5 56.Bb3 Kf4 57.Bd5 Kg3=+ 58.Ke4 Kh3 59.Kf5 Be7 60.Kg6 Kg3-/+ 61.Kf7 Bc5 62.Kf6 Kf4 63.Bc4 h3 64.Bf1 h2 65.Bg2 Kg3 66.Bh1 Kf2 67.f4 gf4 68.Ke5 f3 69.Ke4 Kg1?? (70.Bf3 h1R 71.Bh1 Kh1-+; better is 69...b5 70.ab5 a4-+) 0–1. b4_player (2235) – Djuric (2015), GameColony.com, 2003.

4.Nc3 a5 5.b5 c5 6.bc6 bc6 7.e4 0-0 8.e5 Ne8 9.Nf3 d5 (9...d6 10.Bf4=) 10.Rb1 Ba6 11.Qb3 e6? (better is 11...Nc7!?+=) 12.Ba3+- c5? (better is 12...Nd7 13.Bf8 Bf8+-) 13.Bc5 (< 13.cd5 Nd7 14.de6 Bf1 15.Rf1 Rb8 16.ed7 Rb3 17.Rb3 Qd7 18.Bc5 f6 19.Bf8 Kf8 20.ef6 Bf6+-) 13...a4 14.Qa4 Nd7 15.Bf8 Bc4 (15...Bf8 16.Qb3 Rb8+-) 16.Be7 Ra4 (16...Qc8 17.Qb4 Rb8 18.Qa3+-) 17.Bd8 Ra3 18.Bc4 dc4 19.Kd2 Bh6 20.Kc2 f6 (20...Ra8 21.Bh4+-) 21.Rb7 (21...Nf8 22.Be7+-) 1-0. b4_player (2235) - salvati (1755), GameColony.com, 2003.

4.Nc3 b6 5.Bb2 Bb7 6.f4 d5 7.e3 dc4 8.Nf3 0-0 (8...Nd5 9.Nd5 Bd5 10.Qc2=+) 9.Bc4= Ne4 10.0-0 Nc3 11.Bc3 e6 12.b5 Nd7 13.a4 Nf6 14.Ne5 Nd5 15.Qd2 Nc3 16.Qc3 Rc8 17.Be2 c5 18.bc6 Be5 19.fe5 Rc6 20.Qd2 Qc7 21.Rac1 Rc1 22.Rc1 Qd7 23.Bf3 (better 23.a5+=) 23...Bf3=+ 24.gf3 Qa4 25.Rc7 b5 26.e4 a5 Black prepares the advance b4 27.Kf2 b4 28.d5 Qb5 29.Qd4 b3 (29...ed5 30.ed5 b3 31.e6=) 30.Rc5 Qb6 31.Rc4?? (better 31.de6 Rd8 32.Rd5 Qd4 33.Rd4-+) 31...Qd4 32.Rd4 b2 33.Rd1 a4 34.Ke3 (34.Rb1 a3 35.d6-+) 34...a3 35.Kd3 a2 36.d6 0-1. Minister007 (2335) - Laykalou (2305), Rated blitz game, lichess.org, 2020.

4.f3? d5-+ 5.c5 c6 (better 5...Nc6!? 6.Nc3 Nh5-+) 6.e3-/+ 0-0 7.g4? (better 7.Nc3!?-/+) 7...Re8 8.h4 (8.Nc3-+) 8...e5 9.g5?! (9.Bb2 e4 10.g5-+) 9...Nh5 10.Bg2 (10.Ne2 a5 11.b5 ed4 12.ed4-+) 10...ed4 11.Bb2 (11.a4 de3 12.Ra3 d4-+) 11...Re3 12.Kf2 Qe7 (12...Qc7 13.Ne2 d3 14.Ke3 Bb2 15.Qd3-+) 13.a4 (13.Bd4 Re1!! 14.Qd2 Bd4 15.Qd4-+) 13...Nf4 14.Ra3 (14.Bf1 a5 15.ba5 d3-+) 14...Na6 (better 14...Ra3 15.Bc1 Ra2 16.Bd2 Qe3 17.Kf1 Qd3 18.Kf2-+) 15.Bc1 Ng2 (better 15...Nb4 16.Bf1 Bf5 17.Nh3 Nbd3 18.Bd3 Nd3 19.Rd3 Bd3 20.Nf4 Bb1 21.Be3 de3 22.Kg2-+) 16.Kg2 Re1 17.Qc2 (17.Qd2 Bf5 18.Rb3-+) 17...Nb4 18.Qf2 (18.Qd2 Bf5 19.Qb4 Rc1-+) 18...d3 (18...Rc1 19.Rb3 Na6 20.Qd2-+) 19.Nd2 (19.Bd2 Rb1 20.Bb4 Rb4 21.Rd3 Bf5-+) 19...Rc1 20.Nh3 Bh3 21.Rh3 Re1 22.Kg3 Re2 23.Qg1 Rd2 24.Ra1 Re2 25.Rh2 Rh2 26.Re1 Re2 27.Rd1 d4 (27...Be5 28.f4 Bf4 29.Kf4 Re8 30.Kf3 Qe4 31.Kg3 Qe5 32.Kg4 Qf5 33.Kg3 R8e4 34.Qf2 Qf2 35.Kh3 Qh4) 28.Rf1 Qc5 (28...d2 29.f4 Re1 30.a5 d1Q 31.Re1 Qde1 32.Qe1 Qe1 33.Kg2 Qd2 34.Kf3 Re8 35.f5 Qe2 36.Kg3 Be5 37.Kh3 Qf3) 29.Rc1 Qe5 30.f4 (30.Kh3 Nd5 31.Rc2 Nf4 32.Kg3 dc2 33.Qf2 c1Q 34.a5 Rf2 35.h5 Qg5 36.Kf2 Qh4) 30...Re3 31.Kh2 (31.Qe3 Qe3 32.Kh2 Qc1 33.Kg3 Qg1 34.Kh3 Re8 35.h5 Re2 36.hg6 Rh2) 31...Qf4 32.Kh1 Rh3 33.Qh2 (33.Kg2 Qf3) 33…Qh2 0-1. Paul593 - su35 (2030) , ChessWorld.net, 2010.

5.e3 0-0 6.Nf3 a5 7.b5 c6 8.Be2 d5 9.0-0 dc4 10.Bc4 cb5 11.Bb5 Nc6 12.Qe2 e6 (12...Bf5 13.Bb2+=) 13.a4 Nd5 14.Nd5 ed5 15.h3 Nb4 16.Ba3 Bd7 (16...Bf5 17.Rfc1+=) 17.Rab1 Bf5 18.Rb2 Qd6 19.Qd2 Rfc8 20.Bb4 ab4 21.Qb4 Qb4 22.Rb4 Rc2 23.Ra1 h5 24.Bf1 Bf8? (better 24...Ra7+/-) 25.Rb7+- Bg7 (25...Ra5 26.Rb5 Rb5 27.ab5+-) 26.a5 Rc6 27.a6 Bc8 28.Bb5 (better 28.Rb3 Ra7 29.Rb8+-) 28...Bb7= 29.ab7?? (better 29.Bc6 Bc6 30.a7=) 29...Ra1-+ 30.Kh2 Rb6 (30...Rb6 31.Bc6 Ra5-+) 0-1. Saturnus13 (2255) - almasssss (2340), Rated Bullet game, lichess.org, 2022.

5.Nf3 0-0 6.e4 b6 7.Be2 a5 (7...c5!? 8.Rb1 cd4 9.Nd4 Bb7=) 8.b5+= Bb7 9.Qd3 Nbd7 10.0-0 e5 11.d5 h6 12.Qc2 Nh7 13.Re1 Ng5 (13...f5 14.a3+=) 14.Ng5+/- hg5 15.Bg4 Bh6 16.Bd7 Qd7 17.Qd3 f6 18.Re2 (18.Qe2 Kg7+/-) 18...Kf7 19.Be3 (19.a3 Ke8+=) 19...Rh8 20.Rae1 (20.f3 Kg8+=) 20...Rh7 21.f3 Rah8 22.h3 Bc8 23.a3 Bg7 24.Qc2 Qe8 25.Rf2 Bh3? (better is 25...Kf8!?+=) 26.gh3+- Rh3 27.Kf1 Qd7 28.Ke2 Rh2 29.Qd2 R8h3 30.Kd1 Rh1 31.Rh1 Rh1 32.Kc2 Rh8 33.Rh2 Rg8 34.Qg2 Qe7 35.Qg4 Kf8 36.Rh7 Kf7 37.Qe6 Qe6 38.de6 Ke6 39.Nd5 f5 40.Nc7 Kf6 41.Nd5 Ke6 42.Bg5 fe4 43.fe4 Bf8 44.Nc7 1-0. b4_player (2230) - Fetzer (1965), GameColony.com, 2003.

5.Nf3 0-0 6.e4 c5 7.Rb1=.

5.Nf3 0-0 6.e4 Bg4 7.Rb1 Nbd7 8.h3 Bf3 9.Qf3 e5 10.d5 Ne8 11.Bd3 a5 12.a3 ab4 13.ab4 Nef6 14.0-0 Qe7 15.Bg5 Ra3 (better is 15...h6!? 16.Bh4 Rfb8+/-) 16.Nb5+- Ra2 17.Nc7 Rc8 18.Nb5 Rca8 19.Nc3 R2a3 20.Rfc1 Qd8 (better is 20...h6 21.Bh4 b6+-) 21.Nb5 R3a4 (21...R3a6 22.c5 dc5 23.bc5+-) 22.Nd6 (22...h6 23.Be3+-) 1-0. b4_player (2235) - joepheldoorn (1820), GameColony.com, 2003.

5.Nf3 c6 6.e4 Nbd7 7.Bd3 e5 8.d5 c5 9.a3 b6 10.Qa4 0-0 11.Qc6 Rb8 12.Qd6 Bb7 13.Bg5 Qc8? (better is 13...h6 14.bc5 hg5=) 14.Nb5+- Ne8 15.Qe7 a6 16.Nd6 Qc7 17.Nb7 Rb7 18.Qd8 f6 19.Qc7 Rc7 20.Be3 h6 21.Rb1 Kh7 (21...f5 22.Rg1+-) 22.bc5 bc5 23.Ke2 Nd6 24.Rhd1 f5 25.ef5 gf5 26.Nd2 Kh8 (26...e4 27.Bc2+-) 27.f3 f4 (27...Re8 28.Bc2+-) 28.Bf2 Bf6 29.Ne4 Be7 30.Rd2 Kg7 31.g4 Kf7 32.h4 Ne4 33.Be4 (< 33.fe4 Rg8 34.Kf3 Nf6+-) 33...Bd6 34.Rdb2 Rfc8 35.g5 hg5 36.hg5 Kg7 37.Kd3 Nf8 (37...Rf8+-) 38.Rb6 Be7 39.Ra6 Bg5 (39...Rd8+-) 40.Rg1 (40...Nh7 41.Bh7 Kh7 42.Rg5+-) 1-0. b4_player (2225) - Fetzer (1920), GameColony.com, 2003.

4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3).

4.Nc3 Ne4 5.Bb2 0-0 6.Nf3 d6 7.d4 Nc3 8.Bc3 c5 9.bc5 dc5 10.Be2 Nc6 11.0-0 Bg4 12.Rc1 cd4 13.ed4 Bf3 14.Bf3 Rc8 15.d5 Ne5 16.Be2 b6 17.f4 Nd7 18.Bg7 Kg7 19.Qd4 f6 20.Bg4+/– Rc7 21.Rc3 Nc5 22.f5 g5 23.h4 h6 24.Re1 Qd7 25.Rce3 Qd6 26.Bf3 Rf7 27.Bh5 Rf8 28.Qd2 Rb8 29.Qe2 Nb7 30.Re7+– Re7 31.Qe7 Qe7 32.Re7 Kg8 33.hg5 fg5 34.Rd7 a5 35.f6 Nc5 36.Rg7 Kh8 37.Bg6 Rb7 38.Re7 Rb8 39.Rh7 (39...Kg8 40.f7 Kf8 41.Rh8 Kg7 42.Rb8+–) 1–0. weBNimzo – BeerClark, ChessWorld.net, 2004.

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

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

4.Bb2 b6 5.e3 Bb7 6.Be2 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 b6 6.Be2 Bb7).

4.d4 0-0 5.Bb2 d6 6.e3 b6 7.Be2 Bb7 8.0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 b6 6.Be2 Bb7 7.0-0 d6 8.d4).

4.d4 d5 5.e3 0-0 6.Nc3 c6 7.a4 (7.Bd3 dc4 8.Bc4 Bf5=) 7...Bg4 (7...Na6 8.Qb3+=) 8.Qb3= Bf3 9.gf3 dc4 10.Bc4 Nbd7 11.Be2 (11.0-0 e5=) 11...e5+= 12.d5 ½–½. Drazic,Sinisa (2460) – Kosanovic,Goran A (2370), 7th Senta SER, Open–A, 2013.

4.d4 d5 5.e3 e6 6.Bd3 0-0 7.0-0 b6 8.Nbd2 Bb7 9.a4 dc4 10.Nc4 Nbd7 11.b5 Ne8 (better is 11...c5!?+=) 12.Ba3+/– Nd6 (12...Nc5 13.Be2 (< 13.dc5 Ba1 14.c6 Bc8+–; 13.Bc5?! bc5 14.Be2 Rb8+=) 13...Nd6 14.dc5 Bf3 15.cd6 (15.Bf3?! Nc4 16.Ba8 Ba1+/–; 15.gf3?! Qg5 16.Kh1 Nc4 17.Bc4 Rfd8+/–; 15.Nd6?! Be2 16.Qe2 Ba1 17.Nf7 Rf7 18.Ra1 Qh4=) 15...Be2 16.Qe2 Ba1 17.Ra1 cd6 18.Bd6+–) 13.Nd6+– cd6 14.Bd6 Re8 15.Rc1 Rc8 16.Rc8 Qc8 17.e4 Nf6 18.Qe2 Rd8 19.Be7 Rd7 20.Bb4 Qa8 21.Re1 h6 22.a5 Qd8 23.a6 Ba8 24.Bd2 Ng4 25.h3 Nf6 26.Rd1 Ne8 27.Bf4 Bd4 28.Nd4 Rd4 29.Rd2 (better is 29.Be3 Rd6 30.e5 Rd7 31.Bh6 Bd5+–) 29...Be4?? (better is 29...Nf6+/–) 30.Be4+– g5 (30...Nf6 31.Bc6 Rd2 32.Bd2+–) 31.Rd4 Qf6 (31...Qd4 32.Bg3 Nd6+–) 32.Be5! (32...Qe7 33.Qh5+–) 1–0. marekt – BeerClark, ChessWorld.net, 2004.

4.Bb2 0-0 5.Bg2 (--> 1.b4 Nf6 2.Bb2 g6 3.g3 Bg7 4.Bg2 0-0 5.c4).

4.Nf3 Ne4 5.d4 c5 6.bc5 Nc5 7.Nc3 Ne6 8.Qd2 0-0 9.Bg2 d6 10.0-0. weBNimzo – sugamuxi, ChessWorld.net, 2004.

3.d4 e6 4.a3 Bd6+=.

3.d4 g6 4.g3 Bg7 5.c3 (5.Nf3 a5 6.b5 Ne4+=) 5...0-0 6.Bg5 (6.Bg2 Bf5+=) 6...c6 7.Bf6 Bf6 8.e3 Re8 (8...Nd7 9.h4-/+) 9.Nd2 (9.Nf3 Nd7+=) 9...e5-/+ 10.e4?? (better is 10.Nb3-/+) 10...ed4-+ 11.c4 de4 12.Qb3 e3 13.fe3 Re3 14.Qe3 de3 15.Ndf3 Ba1 16.h4 Bg4 17.Be2 Bf3 18.Nf3 Qe7 19.0-0 Bc3 0–1. thirdcoast – guerino (2205), net–chess.com, 2003.

3.f3 e5-/+ 4.a3 d4 5.h4 (5.e3!?-/+) 5...Nh5 6.Kf2 Be7 7.g3 0-0 8.Bh3 Nd7 9.Bg4 (9.e4 Nhf6-/+) 9...Ndf6 (9...Nhf6 10.Bf5-+) 10.Bc8-/+ Rc8 11.Nh3 Qd6 12.g4 Nf4 13.Nf4 ef4 14.Qd2 Nd5 15.c3 (15.h5 f5 16.c4 dc3 17.Nc3 Bf6 18.Nd5 Ba1-/+) 15...Qe5 (15...dc3 16.Qc2-+) 16.g5 (better is 16.Bb2!?-+) 16...dc3 17.Nc3 Ne3 (better is 17...Qd4!? 18.Ke1 Qc3 (18...Nc3?! 19.Bb2+=) 19.Qc3 Nc3 20.Bf4 Rfe8-+) 18.Qb2 (18.d4 Qe6 19.Qd3 Bd6+=) 18...a6 (18...Qd4 19.Be3 fe3 20.Kg2-/+) 19.Nd1 Nd1 20.Rd1 Qb2 (20...Qf5 21.Qd4 Qh3 22.Bf4 Qh4 23.Kf1 Bg5 24.Be5 Qh3 25.Kf2-/+) 21.Bb2= Rce8 22.Be5 (22.Rg1 c5=) 22...Bc5 (better is 22...Bg5!? 23.Bc7 Bh4 24.Kf1 Bf6+=) 23.bc5+= Re5 24.d4 (24.d4 Re3 25.d5+=) 1–0. 2buddies – Ratscales, ChessWorld.net, 2015.

3.Nf3 a6+=.

3.g3 e5-/+ 4.Bg2 (4.a3 a5 5.b5 Nbd7-/+) 4...c6 (4...Bb4!? 5.c3 Bd6-/+) 5.Nf3 (5.a3 a5 6.ba5 Bc5+=) 5...Bd6 (5...Bb4 6.Bd2 Bd6 7.0-0-/+) 6.0-0 (6.c4 dc4 7.dc4 Bb4 8.Bd2 Bd2 9.Qd2 Be6+=) 6...0-0 7.Bb2 d4 (7...Nbd7 8.Nbd2+=) 8.a3 (8.c3 a5 9.cd4 ed4+=) 8...Re8 9.c3 Bg4 (9...a5 10.cd4 ed4 11.Nbd2=) 10.cd4 (10.h3 Bf3 11.Bf3 Nbd7+=) 10...Bf3 (10...ed4!? 11.Nbd2 a5+=) 11.Bf3+/– Nbd7 12.e3 (12.Nd2 ed4 13.Nb3 Be5+/–) 12...ed4 (12...a5 13.b5 cb5 14.Bb7+/–) 13.Bd4 Ne5 14.Bg2 (14.Nc3 Nf3 15.Qf3 Be5 16.Be5 Re5+/–) 14...Qc7 (14...a5 15.b5+/–) 15.f4 (15.Nd2 a5+/– (15...Nd3? 16.Bf6 gf6 17.Ne4+–)) 15...Neg4 16.h3?? (better is 16.Qd2 a5 17.b5+/–) 16...Ne3-+ 17.Be3 Re3 18.Rf3 Rae8 (18...Qb6 19.d4 Nd5 20.Qd2-/+) 19.Re3 (better is 19.Nc3!? Qb6 20.d4-/+) 19...Re3-+ 20.Kf2? (20.Bf3-+) 20...Nd5 (better is 20...Bf4 21.Bf3 Qe5 22.gf4 Qd4-+) 21.Bd5+= Qb6?? (better is 21...Bf4 22.Bf3 Bg3 23.Ke3 Qf4 24.Ke2 Qd4+=) 22.d4+– Re8 23.Bb3 Bf8 (23...Be7 24.Ra2 Bf6 25.Kg2 Qd4 26.Qd4 Bd4 27.Rd2+–) 24.Nc3 g6 (24...Rd8 25.Ne2+–) 25.Kf3 Bg7 26.a4 (better is 26.Ne4 Bd4 27.Ra2+–) 26...Qd4 (26...Bd4 27.Ne4 Re4 28.Ke4 Ba1 29.b5-/+) 27.Qd4= Bd4 28.Rc1? (better is 28.Rd1 Re3 29.Kg2 Rc3 30.Bf7 (worse is 30.Rd4 Rb3 31.Kf2 Kg7-/+) 30...Kf7 31.Rd4=) 28...Re3-+ 29.Kg4?? (better is 29.Kg2 Bc3 30.Rb1-+) 29...h5 (29...Rc3?! 30.Rc3 Bc3 31.b5=) 30.Kg5 Rg3 (30...Rc3?! 31.Rc3 Bc3 32.f5-/+) 31.Kh6 (31.Kh4 Bf2 32.Bf7 Kf7 33.Rc2 Rg4) 31...Bg7 0–1. Benreguia,Frederic – Gonet,Gerard, FICGS, 2012.

3.Bg5 h6 4.Bf6 (4.Bd2 Nc6 5.b5 Ne5-/+) 4...gf6 (4...ef6 5.Qd2-+) 5.Nd2 d4 (5...Nc6 6.c3-/+) 6.Ngf3=+ Nc6 7.g3 (7.b5 Ne5=+) 7...e5 (7...Nb4 8.Bg2 Nd5-/+) 8.Ne4? (8.a3!?=+) 8...Nb4 (8...Bb4 9.Ned2-+) 9.a3 (better 9.Bg2-/+) 9...Qd5?? (better 9...Nd5 10.Qc1 c6-+) 10.Nf6+– (10.ab4?! Bb4 11.Ned2 Bc3+–) 10...Kd8 (10...Ke7 11.Nd5 Nd5 12.Ne5 Bg7+–) 11.ab4 (better 11.Nd5 Nd5 12.Ne5+–) 11...Bb4-+ 12.Nd2 Qh1 13.Ng4 (13.Rb1 a5-+) 13...Qd5 (better 13...Bg4 14.Qb1 c5 15.Qb2-+) 14.Rb1 (14.f3 f5 15.Nf2 c6-+) 14...Be7 (better 14...Bd2 15.Qd2 Bg4-+) 15.f3 (15.e4 Qa5 16.Ra1 Qc5-+) 15...h5 16.e4 (16.Nf2 a5 17.Bg2 a4-+) 16...Qa5 17.Ke2 (17.Nf2 h4 18.Bg2-+) 17...hg4 18.fg4 (18.Bg2-+) 18...Bg4 19.Nf3 f5 (19...Rh2 20.Bg2 Rg2 21.Kf1 Rg3 22.Qe1 Rf3 23.Kg2 Qa6 24.Qh1 Qf6 25.Ra1 Qf4 26.Kg1 Qe3 27.Kh2 Qf2 28.Qg2 Rh3) 20.ef5 (20.h3 fe4 21.de4 Bd7-+) 20...Bf5 (better 20...Bf3 21.Kf2 Rh2 22.Kg1 Rh1 23.Kf2 Bd1 24.Rd1 Qc3 25.Re1 Rh2 26.Kf3 Qe1 27.Bg2 Qe3 28.Kg4 Rh5 29.Bb7 Rg5 30.Kh3 Qg3) 21.h4 (21.Bg2-+) 21...e4 (better 21...Bg4 22.Kf2 Rf8-+) 22.Nd4 (22.de4 Bd7 23.Qd4-+) 22...Qe5 (better 22...Bg4 23.Kf2 Bd1 24.Rd1 e3 25.Ke3 Qe5 26.Kd2 Qd4-+) 23.Nf5 Qf5 (better 23...ed3 24.Kd2 Qf5 25.cd3-+) 24.de4 Qd7 25.Qc1 (25.Qd7 Kd7 26.Rb7-+) 25...Qg4 26.Kf2 (26.Kd3 Qg3 27.Qe3 Qd6 28.Qd4 Qd4 29.Kd4 c5 30.Ke3-+) 26...Bc5 27.Kg2 Rf8 (better 27...Qe4 28.Kh2 Rh4 29.gh4 Bd6 30.Kg1 Qd4 31.Kg2 Qg4 32.Kf2 Bg3 33.Ke3 Bf4 34.Kd3 Bc1 35.Rc1 Qf3 36.Kc4 Qf4 37.Kb3 Qc1-+) 28.Rb7 (28.Qg5 Qg5 29.hg5-+) 28...Qe4 (28...Rf2 29.Kg1 Qg3 30.Kh1 Rh2) 29.Kh2 (29.Kh3 Qh1 30.Kg4 Qf3 31.Kh3 Rg8 32.Rb8 Rb8 33.Qg5 Rg5 34.hg5 Ke7 35.Kh2 Qf1 36.g6 Rh8) 29...Rf2 30.Kg1 (30.Kh3 Qf5 31.g4 Qf3) 30…Rd2 0–1. karlo715 – ransmohamud, gameknot.com, 2014.

3.h3 e5 4.c3 d4 5.Bb2 dc3 6.Bc3 Nc6 7.a3 Be7 8.e3 0-0 (8...Qd5 9.Qf3=+) 9.Nd2 (9.b5 Nb8=) 9...a6 10.Ngf3 Bd6 11.g4 h6 (11...Nd5 12.Bb2=+) 12.Bg2 Nd5 13.Bb2 f5 14.Nh2 e4 (better 14...Nde7!?=) 15.de4+/- fe4 16.Ne4 Nb6 (16...Be6 17.Nf3+/-) 17.Nd6 cd6 18.Bc6 (18.Qd3!?+-) 18...bc6+/- 19.Qd4 Qf6 (19...Qc7 20.Rc1 Bb7 21.g5+/-) 20.Qf6 gf6 21.0-0-0 d5 22.Rhe1 Re8 (22...a5!?+/-) 23.Bf6+- Nc4 24.Bd4 (24.Bb2!? a5 25.ba5 Ra5+-) 24...Na3+/- 25.Nf3 Rf8 26.Ne5 Rf2 27.Rd2 Rd2 28.Kd2 Bb7 29.Ke2 (29.Rc1 Rc8+/-) 29...Nc2 (29...a5 30.Rc1+=) 30.Rg1 Nb4 31.g5 h5 32.g6 a5? (32...Nc2 33.Bb2 Re8 34.Rc1+/-) 33.Rg5?? (better 33.Nf7 Ba6 34.Kd2+-) 33...Nc2 (33...Ba6 34.Kd2 Rf8 35.e4 (worse 35.Rh5 Rf2 36.Ke1 Rg2=) 35...de4 36.Rh5 e3 37.Ke3 (worse 37.Be3 Rd8 38.Kc1 Rd5-/+) 37...Nc2 38.Ke4 Nd4 39.Kd4+=) 34.Bc5 a4? (34...h4+=) 35.Kd2?? (better 35.Rh5 Re8 36.Kd1 Ne3 37.Be3+-) 35...Na1= 36.Rh5?? (36.Ba3 h4 37.Rf5 Nb3 38.Kd1+/-) 36...Nb3=+ 37.Kc2?? (better 37.Kc3 Nc5 38.Rh7 Ne4 39.Kc2=+) 37...Nc5-+ 38.Nd3?? (38.Rh7 Ba6 39.Ng4 Bd3 40.Kc3 Bg6 41.Nf6 Kf8 42.Rh8 Kf7 43.Ra8 Kf6 44.Kb4 Nd3 45.Kc3-+) 38...Nd3 39.Kd3 a3 40.Rh7 (40.Rg5 a2 41.Rg1-+) 40...Ba6 41.Kc2 Bd3! 42.Kd3 a2 43.Rc7 a1Q 44.Rc6 (44.Rc8 Rc8 45.Ke2 Rf8 46.Kd3 Qd1 47.Kc3 Rb8 48.e4 Rb3) 44...Qd1 45.Kc3 Qc1 (45...Rb8 46.Rc8 Rc8 47.Kb4 Qb1 48.Ka4 Ra8) 46.Kd4-+ Qc6 47.Kd3 (47.e4 Ra4 48.Ke3 Qc3 49.Kf4 Re4 50.Kg5 Qe5 51.Kh6 Rh4) 47...Ra2 (47...Qc4 48.Kd2 Ra2 49.Ke1 Qe2) 48.h4 (48.Kd4 Ra4 49.Ke5 Kg7 50.e4 Re4 51.Kf5 Qg6) 48…Qc4 0-1. Coach Millser - bertomeeggo (1890), ChessWorld.net, 2018.

3.a3!?+=.

3.Ba3 Nc6 4.c3 b5 5.e3 d5 6.Be2 Be6 7.h3 a5 (7...d4 8.Nf3-/+) 8.Nf3? (better is 8.d4!? Rb8 9.ba5=) 8...ab4-/+ 9.Bb4 (9.Bb2!?-/+) 9...Nb4-+ 10.cb4 Bb4 11.Nfd2 d4 12.e4 (12.Bf3 Ra6 13.Qc2 de3 14.fe3 Nd5 15.Bd5 Qd5-+) 12...Ra2 13.Ra2 Ba2 14.0-0 Be6 15.Nf3 Qd6 16.Nbd2 Ke7 (16...0-0 17.Ng5-+) 17.Qa1 (17.Ng5 Bd7-+) 17...Nh5 18.Bd1 (18.Qd1 Nf4 19.Ng5 Bd7-+) 18...Nf4 19.Qb1 (19.Kh1 Bh3! 20.gh3 Qh6-+) 19...Nh3! 20.Kh2 Nf4 21.g3 Ng6 22.Bb3 c5 23.Be6 Qe6 24.Ng5 (24.Qc2 h5-+) 24...Qg4 (24...Bd2 25.Ne6 fe6 26.Qb5+–) 25.Ngf3 Nf4! 26.Rh1 Qh3 27.Kg1 Qg2 0–1. astrop – deepaktnj, internet, 2007.

3.Bb2 Bb4-/+ 4.c3 (4.Nd2 d6-/+) 4...Bc5 (4...Be7 5.Nf3 Nc6 6.c4 Bb4 7.Nbd2-/+) 5.e3 (5.d4 ed4 6.cd4 Bb4 7.Bc3 Be7-/+) 5...d5 6.h3 (6.d4 ed4 7.cd4 Bb4 8.Bc3 Bd6-/+) 6...0-0 (6...d4 7.ed4 ed4 8.Nf3-+) 7.Ba3 (7.d4 ed4 8.cd4 Bd6-+) 7...Qd6 (7...Ba3 8.Na3 Nc6 9.Nf3-+) 8.Bc5-/+ Qc5 9.Nf3 (9.d4 ed4 10.cd4 Qa5 11.Qd2 Qb6-/+) 9...Re8 (9...e4 10.Nfd2-/+) 10.Be2 (10.Ne5 Qb6 11.d4 Qb2+=) 10...b6 (10...Qd6 11.d4 Nc6 12.0-0-/+) 11.0-0 (11.Ne5 Nbd7 (worse is 11...Re5 12.d4 Qe7 13.de5 Qe5 14.Qd4=) 12.Nd7 Bd7+=) 11...Bb7 (11...Nbd7 12.d4 Qd6 13.c4-/+) 12.d4 (12.Ne5!? Qd6 13.d4=) 12...ed4-/+ 13.cd4 Qd6 14.Nc3 Nbd7?? (14...Ba6 15.Ba6 Na6 16.Qe2-/+) 15.Rc1?? (better is 15.Nb5 Qc6 16.Rc1+–) 15...a6-/+ 16.a4 (16.Qc2 c5-/+) 16...Rac8 17.Rb1 (17.Qb3 Rb8-/+) 17...Qa3 (17...Ne4 18.Ne4 de4 19.Nd2-/+) 18.Qc1 (18.Rb3 Qe7 19.Bd3-/+) 18...Qd6 19.Rd1 (19.Qd1 Ne4 20.Rc1-/+) 19...c5-/+ 20.Qa3 Ne4 (20...Qc6 21.dc5 Qc5 22.Qc5 Rc5 23.Na2-/+) 21.Ne4 Re4 (21...de4 22.Ne5 Ne5 23.de5+=) 22.a5 b5 23.Bd3 Ree8 (23...Re7 24.Rbc1 Rc6 25.dc5 Nc5 26.Nd4 Nd3 27.Qd3 Rc1 28.Rc1+=) 24.dc5 (24.Bf5!?=) 24...Qc5 (24...Nc5 25.Rbc1+=) 25.Qc5 (25.Qb2 Qc3+=) 25...Nc5-/+ 26.Nd4 (26.Bf5 Rc7-/+) 26...Nd3 27.Rd3 g6 (27...Rc4 28.Kf1-/+) 28.Kh2 f5 29.Nf3 (29.Kg1 Rc4-/+) 29...h6 (29...Rc2 30.Kg3-/+) 30.Nd4 (30.Kg3 Kg7-/+) 30...Kf7 31.g3 (31.Kg3 Kf6-/+) 31...Rc4 32.h4 (32.Kg1 Rec8-/+) 32...Kf6 33.Nf3 (33.Kh3 g5-+) 33...Rec8 (33...Ra4!? 34.Nd4-+) 34.Nd4 Ra4 35.Nf3 (better is 35.Nb5 ab5 36.Rb5-+) 35...Ra5 36.Nd4 (36.Kg2 Ra4-+) 36...Ra4 37.Nf3 (37.h5 gh5 38.Kg2 Rac4-+) 37...d4 38.Nd4 (38.Nd2 Rc2 39.ed4 Raa2-+) 38...Be4 39.Rbd1 (39.Rdd1 Bb1 40.Rb1 b4-+) 39...Bd3 40.Rd3 Ke5 (40...b4 41.Rd2-+) 41.f3 (41.Kg2-+) 41...Ra2 42.Kh3 Rc1 43.f4 (43.g4 Rh1 44.Kg3 Rg1 45.Kh3 fg4 46.fg4-+) 43...Ke4 44.Rb3 (44.Nf5 gf5 45.Rd2 Rd2 46.g4 Kf3 47.gf5 Rh1) 44...Rh1 0–1. pillsbury – greyhawk, net–chess.com, 2017.

3.Bd2 d5-/+ 4.Nf3 Nbd7 (4...Bd6 5.Nc3-/+) 5.g3 Bd6 6.Bg2 0-0 7.0-0 Re8 8.Na3 (8.a3 c6=+) 8...a6 (8...a5 9.Nb5 Bb4 10.d4-/+) 9.c4 c6 (9...e4 10.Ne1=+) 10.c5 Bc7 11.Qc2 e4 12.Ng5 (better 12.Nd4!?=) 12...h6-/+ 13.Nh3 Nf8 14.de4 (14.d4 Bf5 15.e3 Qc8-+) 14...Ne4 15.Rfd1 (15.Bf4 a5 16.b5 Bf5-+) 15...Nd2 (15...Bf5 16.Qc1 Qf6 17.Be1-+) 16.Rd2 (16.Qd2 a5 17.b5 Bg4-/+) 16...Qf6 17.Re1 Bf5 18.Qb3 (18.Qd1 a5 19.e4 Be4 20.Be4 Re4 21.Re4 de4-+) 18...Ng6 19.f3 (19.Nc2 Be5-+) 19...Rad8 (better 19...a5 20.Nc2 Be5-+) 20.Rd4?? (better 20.Nf2 b6 21.Nc2-+) 20...Qd4 21.Kh1 (21.Nf2 Qd2 22.Rd1 Qe2-+) 21...Re3 (21...a5 22.e3 a4 23.Qd1 (23.ed4 Re1 24.Bf1 ab3 25.Kg2 ba2 26.Nf2 a1Q 27.Nc2 Bc2 28.b5 Rf1 29.Nd1 Qd1 30.f4 Nf4 31.gf4 Qf3) 23...Qb4 24.Qc1-+) 22.Qd1 (22.Nc2 Bc2 23.Qc2 Qb4 24.Rc1-+) 22...Qd1 (22...Ra3?! 23.Qd4 Be5 24.Qd2-/+) 23.Rd1 Re2 (better 23...Ra3 24.Rd2-+) 24.Bf1 Ra2 25.Nb1 Ra1 (better 25...Re8 26.Nd2-+) 26.Nf4 Nf4 27.gf4 Rb1 28.Be2 Rd1 29.Bd1 Bf4 (better 29...Re8 30.Kg2-+) 30.Kg2 Bd2 31.Kg3 Bb4 32.Kf4 g6 33.h4 Bc5 (33...Re8 34.Kg3 Re1 35.Kg2 Rd1 36.Kf2 Rd2 37.Ke3 h5 38.Kf4 Bc5 39.Kg3 f6 40.Kf4 Bg1 41.Kg3 Bh2) 34.Be2 b5 (34...Re8 35.Kg3 Re2 36.f4 h5 37.Kf3 Bg4 38.Kg3 a5 39.f5 Bd6) 35.Bf1 Re8 36.Bh3 Bh3 (36...Bd6) 37.h5 (37.Kg3 b4 38.Kh3 b3 39.Kg4 b2 40.Kh3 b1Q 41.h5 Qf1 42.Kg3 Bd6 43.Kg4 f5 44.Kh4 g5) 37…Bd6 0–1. stefandima – agostinhoarruda, net–chess.com, 2019.

4.c3 Ba5 5.Bb2 Nc6 6.Nd2 d5 7.Ne2 (7.Ngf3 Bg4-/+) 7...d4 (7...Bb6 8.ed5 Qd5 9.Ng3-+) 8.cd4-/+ ed4 (8...Nd4?! 9.Nd4 ed4 10.Qa4 c6 A) 11.Bd4? b5 12.Bf6 Qf6-+ (12...ba4?! 13.Bd8 Kd8 14.Rc1=); B) 11.Qd4=+) 9.Nf4 (9.Qa4!? Ng4 10.f3-/+) 9...Qd6 10.g3 Bg4 11.Be2 Be2 12.Qe2 Nb4?? (better 12...Ne5!?-+) 13.0-0 (13.e5 Nc2 14.Kf1 Qc6 15.ef6 Kd8 16.Qe7 Kc8 17.fg7 Re8+-) 13...0-0 (13...Qd8=+) 14.a3?? (better 14.e5 Qe7 15.Nc4+-) 14...Nc6-/+ 15.Rac1 (15.Nc4 Qd7-/+) 15...Rae8 (15...Bd2 16.Qd2 Rae8 17.Qc2-/+) 16.Nc4 Qd7 17.e5 Nd5 18.Na5 (18.Nd5 Qd5 19.f4 Bb6-/+) 18...Na5 (better 18...Nf4!? 19.gf4 Na5-+) 19.Nd5=+ Qd5 20.Rfe1 (20.Rc7 Re5 21.Qg4 Nc6 22.Rb7 Re6=+) 20...f6 (20...c5 21.Qe4 Qe4 A) 22.de4? Nb3-+ (22...Re5?! 23.f4 Rh5 24.g4-+); B) 22.Re4-/+) 21.f4 (21.e6 c5 22.Qe4-/+) 21...Nb3 (21...fe5 22.Rc7 Qd8 23.Rec1 ef4 24.Qg4-/+) 22.Rc4? (better 22.Rc7!? Nc5 23.Qg4=) 22...fe5-/+ 23.fe5 (23.Rc7 Qd8 24.Qc2=+) 23...Qe6?? (23...c5 24.Ra4 a6 25.g4-+) 24.Bd4?? (24.Rc7 Re7 25.Re7 Qe7=) 24...b6?? (better 24...b5 25.Rb4 a5 (25...Nd4?! 26.Rd4 c5 27.Rh4=+) 26.Rb3 Qb3-/+) 25.Bc3= c5 26.Qe4?? (26.Qg4 Nd4 27.Qe6 Ne6=+ (27...Re6? 28.Bd4 cd4 29.Rd4+-)) 26...Rd8 (26...b5!? 27.Kg2-+) 27.Bb2?? (27.Ra4 a5 28.Qc4 Qc4 29.dc4 Rf3-+) 27...Na5 (better 27...Nd2 28.Qe3 Nf3 29.Kf2 Qc6-+) 28.Rc3 Nc6 29.Rc2 Nd4 30.Bd4 Rd4 (worse 30...cd4 31.Rc7+=) 31.Qe3 Rfd8 32.Rc3 c4 (32...R4d5 33.Qe4-/+) 33.Rd1 (better 33.dc4!? Qh3 34.Rc2+=) 33...cd3 (33...a6!?-/+) 34.Rdd3 Rd3 35.Rd3 Rd3 (35...Re8 36.Kg2-/+) 36.Qd3=+ Kf7 (36...Qe5 37.Qd8 Kf7 38.Qd7 Qe7 39.Qf5 Kg8 40.Qd5 Kf8 41.Qa8 Kf7 42.Qf3 Ke6 43.Qe4 Kf6 44.Qf4 Kg6 45.Qg4 Qg5 46.Qe6 Qf6 47.Qg4 Kh6 48.Qh3 Kg5 49.Qh4 Kf5 50.Qh7 Ke5=) 37.Qf3= Ke7 38.Qf4 Qc6 0-1. EvgeniyR - sokrates272, Rated Blitz game, lichess.org, 2019.

4.c3 Ba5 5.Bd2 d5 6.Qa4 c6 7.h3 b5 8.Qc2 0-0 9.Nf3 de4 10.Ne5 (10.de4!? Nbd7 11.a4-/+) 10...ed3-+ 11.Nd3 Re8 12.Be2 Bf5 13.Be3 Nd5 14.0-0 b4 (14...Ne3 15.fe3 Qg5 16.Rf3-+) 15.Qa4? (15.Bc1 bc3 16.a3 c5-+) 15...bc3 (15...Ne3?! 16.fe3 Bd3 17.Bd3 Qd3 18.Qa5 Qe3 19.Kh1-+) 16.Na3 c2 (better is 16...Bb6 17.Bb6 Nb6-+ (17...Qb6?! 18.Rfe1-+; 17...ab6?! 18.Qa8 Re2 19.Nc1-+)) 17.Nc2?? (17.Qb3 Nc3 18.Nc1 Ne2 19.Ne2-+) 17...Nc3 18.Qa5 Qa5 19.Nf4 Ne2 20.Ne2 Bc2 21.Nf4 Qe5 22.Rac1 Be4 23.f3 Bd3! 24.Rfe1 Qb2 25.Nd3 Qf6 26.Bf2 Nd7 27.Bg3 Re1 28.Re1 Qd4 29.Nf2 h6 30.Kh2 g5 31.Rd1 Qb2 32.Rd7 Re8 33.Ng4 Kg7 34.Rd6 Re6 35.Rd7?? Qe2 36.Ra7 h5 37.Ra4 hg4 38.Rg4 f6 39.h4 Qb5 40.f4 Re2 41.fg5 f5 42.Rf4 Qd5 43.Rf2 Rf2 44.Bf2 Qe5 45.g3 f4 46.gf4 Qf4 47.Bg3 Qd2 48.Kh3 Qa2 49.Kg4 Qe6 50.Kf3 Qf5 51.Kg2 Kg6 52.Kh2 Qg4 53.Be1 c5 (54.Bf2 c4 55.h5 Kh5 56.g6 Qf3 57.g7 Qf2 58.Kh3 Qg1 59.g8R Qg8 60.Kh2 c3 61.Kh3 Qg4 62.Kh2 c2 63.Kh1 c1Q 64.Kh2 Qcg1) 0–1. astrop – alarconconsult, internet, 2007.

4.c3 Ba5 5.Nf3 Nc6-/+.

4.Bd2 Qe7 5.c3 Bc5 6.a4 (6.Bg5 h6 7.Bh4 c6-/+) 6...0-0 (6...d5 7.ed5 Nd5 8.Nf3-+) 7.h3 Nc6 (7...d5 8.Qf3-+) 8.g4 d6 9.f4 (9.Qf3 Ne8-+) 9...ef4 (better is 9...Nh5 10.Nf3 Nf4 11.Bf4 ef4-+) 10.Bg2?? (10.Qe2-+) 10...Ne4! 11.de4 Qh4 12.Ke2 Qf2 13.Kd3 Ne5 14.Kc2 Qg2 15.Ne2 Qe4 16.Kb3 Be6 17.Kb2 Nd3 18.Kc2 Nf2 19.Kc1 Nd1 20.Kd1 Bb3 21.Ke1 Qh1 22.Ng1 Qg1 23.Ke2 Rae8 24.Kd3 Qf1 0–1. IrishBouncer – grimstad, ChessWorld.net, 2005.

3.ba5 c5 4.e3 g6 5.dc5 (5.Nf3 Bg7=) 5...Qa5 6.Nd2 Bg7 7.Bb2 0-0 8.Ngf3 Qc5 9.Nb3 (9.Bd3 Nc6=) 9...Qc7 10.Bd3 Nc6 11.0-0 d5 12.c4 Rd8 13.cd5 Rd5 14.Qe2 Bg4 15.Rfd1 Rad8 16.Bc4 Rd1 17.Rd1 (17.Qd1?? Rd1 18.Rd1 Bf3 19.gf3 h6-+) 17...Bf3 18.Qf3 Rd1 19.Qd1 h5 (19...Ng4 20.Qg4 Bb2 21.Qe4=) 20.f3 e6 21.Qd2 Ne7 22.Bd3 Ned5 (22...Nfd5 23.Bg7 Kg7 24.e4=) 23.e4+= Qb6? (better 23...Nf4 24.Bf1 e5+=) 24.Bd4+- Qb4 25.ed5 Qd2 26.Nd2 Nd5 27.Bf2 Nf4 1-0. wojwys (2085) - justnow (1900), gameknot.com, 2019.

3.b5 g6 4.Bb2 Bg7 5.c4 0-0 6.Nh3 c5 (6...Ra7 7.Nc3=) 7.d5 (7.dc5!? a4 8.e3+/-) 7...d6= 8.e3 Bg4 Ke2 Nbd7 Kd3 Bf3 Kc2 Ne5 9.Qd4 e6 10.Nc3 Qb6 11.Qe4 Nc6 Kb1 e5 gxf3 Ne7 12.f4 h5 13.a4 Qb5 14.Qf5 e4 Ra2 14...Ne8 15.Nb5 Nc6 Qe6 15...b6 16.Ra3 Na7 17.Qg6 Nc6 18.Qh5 ½-½. miskob (2325) - Majous (2330), Rated blitz game, lichess.org, 2021. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4)

3.c3 d5 4.Qb3 e6 5.Ba3 a4 6.Qc2 c6 7.Nf3 b5 8.Nbd2 Nbd7 9.e3 Bd6 10.Bd3 Qe7 11.0-0 0-0 12.Rae1 e5 13.de5 (13.e4 Rb8 14.de5 Be5 15.ed5 cd5 16.Nd4+/- (16.Ne5?! Ne5 17.Re3 Qd6=)) 13...Ne5=+ 14.Ne5 Qe5 15.f4 Qh5 16.Be2 (16.e4 Bc7 17.Bc1 Qh6=+) 16...Bg4 17.Qd1 Be2 18.Re2 Rae8 19.Nf3 Re4 20.Nd2 Re7 21.Bb2? (21.Rf3 Rfe8 22.Qe1 Ne4-+) 21...Rfe8 (better 21...Ng4!? 22.Nf3 Ne3 23.Re3 Re3 24.Nd4 Qd1 25.Rd1-+) 22.Qe1 Ng4 23.h3 (23.Qg3 g5 24.h3 Ne3-+) 23...Ne3 (23...Re3?! 24.Re3 Ne3 25.Rf3 Bf4 26.Rf4=) 24.Rf3 Nc4 (24...Ng2!? 25.Re7 Re7 26.Qf2-+) 25.Re7 Re7 (25...Be7 26.Nc4 bc4 27.Re3=+) 26.Qc1 Nb2 (better 26...Qh4!? 27.Nc4 Re1 28.Qe1 Qe1 29.Rf1-+) 27.Qb2 Re2 28.Qc1 (28.Kf1 Re8-+) 28...Qh4 (better 28...Qg6 29.g4 Qe6-+) 29.Qd1 (29.Kf1 Re7 30.Nb1-+) 29...Re1 30.Rf1 (30.Qe1 Qe1 31.Nf1 Bc7-+) 30...Rd1 31.Rd1 Qf4 32.Nf3 g5 (32...Qe3 33.Kf1-+) 33.Rf1 (33.Re1 Qc4 34.Re8 Kg7-+) 33...h5 34.Nd4 (34.Re1 g4 35.hg4 hg4-+) 34...Qe3 35.Kh1 Qc3 36.Nf5 Qe5 (better 36...Qd3 37.Kg1 Bb4 38.Rc1-+) 37.Nd6 Qd6 0-1. Aleks (1675) - Ashraf_Mohamed1968 (2425), lichess.org, 2020. (=1.d4 Nf6 2.b4)

3.c3 d6 4.Qb3 Be6 5.c4 b5 6.d5 (better 6.e3!?=+) 6...bc4-/+ 7.Qc4 Bd5 8.Qb5 Bc6 9.Qd3 (9.Qc4 d5 10.Qd4 ab4 11.Qb4 e5-+) 9...ab4 10.Bb2 Nbd7 (10...e5 11.f3-+) 11.Nf3 e6 12.e4 (12.a3 Nc5 13.Qe3 ba3 14.Ra3 e5-+) 12...e5 (12...Be4 13.Qd1-+) 13.Be2 Be7 14.0-0 0-0 15.Nbd2 Nc5 16.Qe3 (16.Qc2 Nfe4 17.a3 b3-+) 16...Nfe4 (better 16...Ng4 17.Ne5 Ne3 18.Nc6 Nf1 19.Nd8 Nd2-+) 17.Ne4 Be4 18.Nd2 (18.a3 b3-+) 18...Bg6 (18...Bg5 19.f4 Bf4 20.Rf4 ef4 21.Qd4-+) 19.f3 (19.Nf3 Na4 20.Bc1 c5-+) 19...Bg5 20.f4 Bf4 21.Rf4 ef4 22.Qf4 Qe7 23.Qd4 f6 (23...f6 24.Bf3 Rab8-+) 0-1. Aleks - z20001 (2005), lichess.org, 2020. (=1.d4 Nf6 2.b4)

3.c3 e6 4.Qb3 (4.b5!?=) 4...ab4-/+ 5.cb4 Nc6 6.e3 Bb4 7.Nd2 0-0 8.a3 b6 9.Ngf3 Be7 10.Bb2 Bb7 11.Bd3 h6 12.0-0 d6 13.Rfd1 Nd5 14.e4 Nf4 15.Bc2 Bf6 16.e5 (16.Re1 e5 17.d5 Na5-/+) 16...Be7 (16...de5 17.de5 Ne5 18.Ne4-+) 17.g3 Ne2 18.Kf1 Ba6 19.Bd3? (better 19.Kg2 Qd7 20.Qe3-/+) 19...Ned4!-+ 20.Nd4 (20.Bd4 Bd3 Combination; 20.Nd4 Nd4 Combination) 20...Nd4 21.Bd4 de5?? (better 21...Bd3 22.Ke1 Bf5-+) 22.Ba6= Qd4 (22...ed4 23.Bb7 Ra7 24.Be4=) 23.Nf3 Qg4 24.Be2 Bc5 25.Re1 (25.Ne5 Qe4 26.Nf3 Ra5+/-) 25...Qf5 26.Qd3?? (better 26.Bd3 Qf6 27.Kg2+=) 26...e4-+ 27.Qc3 ef3 28.Qf3 Qe5 (28...Qf3!? 29.Bf3 Ra3 30.Ra3 Ba3 31.Ra1-+) 29.Rad1 (29.Bb5 Qb2 30.a4-+) 29…Qb2 0-1. Aleks - maco2015 (2250), lichess.org, 2020. (=1.d4 Nf6 2.b4)

3.Bd2 ab4 4.Bb4 Nc6 5.Bd2 (5.Bc3 e6=+) 5...d5 (5...Nd4!? 6.e3 Nc6-/+) 6.e3=+ Bf5 7.c4 e6 8.c5 e5 9.Nf3 ed4 10.ed4 Be7 11.Be2 0-0 12.0-0 Ne4 13.Bc1 (13.Be3!?=+) 13...Bf6 14.Bb2 Nb4 (14...Nc5!? 15.Ne5 Na4-+) 15.Nc3 (15.Qb3!? Na6 16.Nc3=) 15...Nc3-/+ 16.Bc3 Nc2 17.Rc1 Ra2 18.Bd3 Bd3 19.Qd3 Qd7?? (better 19...Na3=+) 20.Rc2+- Rc2 21.Qc2 b6 22.Ne5 (22.Ra1 Re8+-) 22...Qe6? (better 22...Be5!? 23.de5 bc5+/-) 23.Re1+- Qc8 24.c6 Re8 25.Nd7 (25.Qa4 Be5 26.de5 Qe6+-) 25...Bg5? (25...Bd4 26.Ra1 Bc3 27.Qc3+-) 26.Kf1 (better 26.Qa2!? Re1 27.Be1 Qe8+-) 26...Re1 (26...Qa6 27.Re2 Bf4+-) 27.Be1 Qe8 (27...Qa8 28.Qe2 Bf4 29.Kg1+-) 28.Qf5 Bd8 29.g4 (29.Qd5 Be7+-) 29...Qe7 (29...Qe6 30.Qe6 fe6 31.Bd2+-) 30.h3 (30.Qd5 Qe8+-) 30...Qh4 (30...Qd6 31.Ne5 Qe6 32.Qe6 fe6 33.Bb4+-) 31.Kg2 (31.Qd5?! Qh3 32.Ke2 Qg4 33.f3 Qe6 34.Qe6 fe6+-) 31...Qh6 (31...h5+-) 32.f3 (better 32.Qd5 Be7 33.Qe4 Qd6+-) 32...Qc1?? (32...Qc6 33.Ne5 Qe8 34.Qc8+-) 33.Bf2 (better 33.Qe5 h6 34.Qe8 Kh7 35.Nf8 Kh8 36.Ne6 Kh7 37.Nd8+- (37.Qd8?! fe6 38.Bf2 Qc6+-)) 33...Qc3?? (33...Qc6 34.Nb8 Qe6+-) 34.Ne5 Bf6 (34...h6 35.Qf7 Kh7 36.Qg6 Kg8 37.Qe8 Kh7+-) 35.Qc8 (35.Qc8 Bd8 36.Qd8) 1-0. Aleks - KASINOZAHARRA (2010), lichess.org, 2020. (=1.d4 Nf6 2.b4)

4.c4 e6 5.Nc3 Bb7 6.Nf3 Bb4 7.Bd2 Bc3 8.Bc3 Ne4 9.Bb2 f5 10.e3 0-0 11.Be2 d5 12.0-0 Nd7 13.a4 Qf6 14.Rc1 Rac8 15.Ne5 Ne5 16.de5 Qh6 Black intends f4 17.Qd3 (17.Bd4!?+=) 17...Rfd8 18.f3 (18.cd5 Nc5 19.Qa3 Bd5= (worse 19...Rd5 20.Bd4+/-)) 18...Nc5 (better 18...dc4 19.Qc4 Qe3 20.Kh1 Bd5 21.fe4 Bc4 22.Bc4 Kh8 (22...fe4 23.Be6 Kh8 24.Bc8 Rc8 25.e6+/-) 23.Be6 Qe4 (23...fe4 24.Bc8 Rc8 25.e6+/-) 24.Bc8 Rc8-+) 19.Qa3= f4 (19...dc4 20.Bc4 Nd3 21.Rc2=) 20.ef4 (better 20.Bd4!? Qg5 21.ef4 Qf4 22.Bc5 bc5 23.Qc5 Qe5 24.Rfe1+=) 20...Qf4=+ 21.cd5 Bd5 22.Rfd1 Qa4 (better 22...Bb3!? 23.Rd8 Rd8-/+) 23.Qa4= Na4 24.Ba3 Rd7 25.Kf2 Kf7 26.Rd4 g5?? (better 26...Nc5 27.Bc5 bc5 28.Rc5 Ra8+=) 27.Ra4+- h6 28.Rd4 c6 (28...Rcd8+-) 29.bc6 Rc6 (29...Ra7 30.Bb5 Rac7+-) 30.Rc6 (better 30.Rd5 Rd5 31.Rc6 Re5 32.Rb6+-) 30...Bc6 31.Rd6 Rd6 32.Bd6 b5 33.Bc7 a4 34.Bd6 Ke8 35.Ke3 h5 36.Kd4 g4 (36...Kf7+-) 37.Kc5 (better 37.fg4 hg4 38.Bg4+-) 37...gf3 38.gf3? (better 38.Bf3 Bf3 39.Kb5=+ (39.gf3?? a3-+)) 38...Bd7?? (better 38...a3 39.Kc6 a2-/+) 39.Kb4+- Kf7 40.Bb5 Bb5 41.Kb5 Kg6 42.Ka4 Kf5 43.Kb5 Kf4 44.Kc6 Kf3 (44...Kf5 45.h4 Kf4+-) 45.Kd7 Kg2 46.Ke6 Kh2 47.Kf5 Kg2 (47...Kg3 48.e6 Kf3 49.e7 Ke2 50.e8Q Kf2 51.Bc5 Kg3 52.Qe2 Kh3 53.Bd6 h4 54.Qf3) 48.e6 h4 49.e7 (49.e7 Kf2 50.e8Q Kf1 51.Bc5 h3 52.Qe3 Kg2 53.Qf2 Kh1 54.Qg1) 1-0. Minister007 (2330) - robertoyepez (2325), Rated blitz game, lichess.org, 2022. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4)

4.f4 Ne4 5.Nf3 Bb7 6.e3 d5 7.Bd3 Nd7 8.0-0 Ndf6 9.Nbd2 Nd2 10.Bd2 e6 11.Ne5 Bd6 12.a4 0-0 13.g3 (13.c3!?=) 13...Ne4=+ 14.Ba5 c5 15.Qb1 Ng3 16.Qe1 cd4 17.Ra3 Rb8 18.c4 (18.Ra1 Qe7=+) 18...Ba3 19.Rf3 dc4 (better 19...Ne2!?=+ Bc3 Qd6) 20.Qd2+= Re8 21.Bg6 (21.Bh7+/- Be7) 21...Bb4+= 22.f5 Qe7 23.Ng4 e5!?+/- 24.Bf7?? Bxf3 Kh1 Qe6 Qc3 (better 24.Qg2 Ba6 24...Qd7) 0-1. Minister007 (2345) - robertoyepez (2310), Rated blitz game, lichess.org, 2022. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4)

4.e3 d5 5.a4 g6 (5...Bg4 6.Nf3=) 6.Bb2 Bg7 7.Nd2 0-0 8.Ngf3 Nbd7 (8...Bf5 9.c4=) 9.c4 Re8 10.Qb3 e5 (10...cb5 11.Qb5 (worse 11.cd5 ba4 12.Qa2 Nb6=+) 11...Nb6 12.c5+=) 11.de5+- Ng4 (11...Nc5 12.Qa3 Nfe4 13.Rd1+-) 12.cd5 Nde5 13.Be2 (13.dc6!? bc6 14.h3+-) 13...cd5+= 14.h3 Nf3 15.Nf3 (worse 15.gf3 Nf2 16.Kf2 Qh4 17.Kg2 Qg5 18.Kf1 Re3-+) 15...Nf6 16.0-0 Bf5 17.Rfd1 Attacking the isolated pawn on d5 17...Rc8 18.Nd4 White gets deadly initiative 18...Be4 (18...Be6 19.Rac1+=) 19.Rac1+- Rc1 20.Rc1 Qd7 21.Qc3 h6 (21...b6 22.Qc6 Qd8 23.Qc7+-) 22.b6 Rd8 (22...Ra8!?+-) 23.Bb5 Qd6 24.Qc7 Bf8 (24...g5 25.Qb7 g4 26.Rc8+-) 25.f3 (25.Qb7?! Rb8 26.Qa6 Qb6 27.Qb6 Rb6+-) 25...Bf5 26.Nf5 gf5 27.Be5 Qc7 (27...Qe6+-) 28.bc7 (28.Bc7?! Ra8+-) 28...Rc8 29.Bf6 (29.Bf6 Ba3 30.Rc2+-) 1-0. Vendelo – Bleazar, internet, 2020.

4.e3 d5 5.Nf3 g6 6.Nbd2 Bg7 7.Rb1 0-0 8.Be2 Nbd7 9.Ba3 Re8 10.0-0 Qc7 11.c4 Ne4 (11...cb5 12.Rb5 b6 13.Rb1+=) 12.Qc2 (12.bc6 bc6 13.Qc2 Nd2 14.Qd2 Nb6+=) 12...Nd2 13.Nd2 cb5 14.Rb5 Nf6 (14...e5 15.de5 Re5 16.Nf3+/–) 15.Rc1+/– b6 (15...Bg4 16.Nf3+/–) 16.Qb2 (16.cd5?! Qc2 17.Rc2 Ba6=) 16...Rb8 17.cd5 Qd8 18.d6! ed6 19.Rb3 Be6 20.Bc4 Bd5 (20...a4 21.Rb4+/–) 21.Bd5 Nd5 22.Rb5 Ne3 23.fe3 Re3 24.Nf3 Qe7 25.Rb3 (25.Kf1 Re8 26.Rb3 Re2+=) 25...Re2 26.Qb1 (better is 26.Bd6!? Rb2 27.Be7 Ra2 28.Bd6+–) 26...Re8 27.Rf1 Qe6 28.h3 (28.Bb2!?+/–) 28...a4= 29.Rd3 Rc8 (29...Qa2 30.Qa2 (30.Qb6 Rg2 31.Kh1 Rg3-+) 30...Ra2 31.Bd6=) 30.Re1 (30.d5 Qf5 31.Qb5 Rcc2+/–) 30...Qe4 Attacking the isolated pawn on d4 (30...Qa2 31.Qa2 (31.Qb6? Rg2 32.Kh1 Rg3-+) 31...Ra2 32.Bd6+=) 31.Qd1 Re1 32.Ne1 Bh6 (32...Rc3 33.Kf1 Rd3 34.Qd3+/– (worse is 34.Nd3 Qd4 35.Qe2 h6=)) 33.Bb2 (33.Kf1 Qc6+/–) 33...d5 34.Nf3 b5 35.a3 Rc4 36.Bc3 Bf4 37.Kf1 b4 (37...Qf5!?+/–) 38.ab4 (38.Bb4? Rc1 39.Ne1 Rd1 40.Rd1 Be3-+) 38...a3 39.Ne1 (39.Ne5 Be5 40.de5 d4 41.Rd4 Qf5 42.Kg1 Rc3=) 39...a2+/– 40.Qa1 (40.Nc2 Bh2+/–) 40...Be3 41.Rd1 (41.Bd2 Qf5 42.Ke2 Qf2 43.Kd1 Bd2 44.Rd2 Rb4 45.Qa2 Rd4+/–) 41...Qf4 (41...Qf5 42.Ke2 Qf2 43.Kd3 Bf4-+) 42.Nf3+/– Qc7? (better is 42...Qf5 43.Qb2 Qc8+/–) 43.Rd3+– Bf4 44.Qa2?? (better is 44.Ne5+–) 44...Rc3= 45.Rc3 Qc3 46.Qb1 (46.Qa8 Kg7 47.Qd5 Qd3 48.Kf2 Qe3 49.Kf1 Bg3-/+) 46...Be3+= 47.b5 Qc4 48.Ke1 Bf4 (48...Bd4!? 49.Nd4 Qd4+=) 49.b6 (49.Kf2 Qc3+=) 49...Bg3= 50.Kd2 Bf4 51.Ke1 Bg3 52.Kd2 Bf4 ½–½. Mrkonjic,Nenad (2390) – Mihic,Vladimir (2240), Novi Sad Serbia, Vojvodina Championship, 2010. (=1.d4 Nf6 2.b4 a5)

4.a4 d5 5.e3 c5 6.bc6 bc6 7.c3 (7.Ba3 Ba3 8.Na3 Qe7=) 7...Nbd7 8.Nf3 c5 9.c4 Bb7 10.Ba3 cd4 11.Bf8 Kf8 12.Nd4 g6 (12...dc4 13.Na3=+) 13.Nc3 (13.cd5 Nd5 14.Bb5 Nc5=) 13...Kg7 (13...dc4 14.Qc2=+) 14.cd5 Nd5 15.Ncb5 N7f6 16.Rb1 Nb4 17.f3 Rc8 18.Be2 (18.Nd6! Rc7 19.Nc4=) 18...Nfd5 (18...e5!? 19.Nb3 Nc2 20.Kf2 Qb6-+) 19.e4=+ Nc3 (better 19...Ne3 20.Qd2 Nbc2 21.Kf2 e5=+) 20.Qb3?? (better 20.Nc3 Rc3 21.Qd2=) 20...Nb1-+ 21.Qb1 e5 22.Nb3 Qb6 23.h4 (23.Kf1 Qe3 24.Qb2 Rhd8 25.Qe5 Kg8-+) 23...Nc2 (better 23...Qe3 24.h5-+) 24.Kf1 Ne3 25.Ke1 Ng2 26.Kf1 Ne3 27.Ke1 h5 28.Nc3 0-1. Aleks - maco2015 (2250), lichess.org, 2020. (=1.d4 Nf6 2.b4)

4.Nf3 c5 5.e3 b6 6.a4 Bb7 7.Be2 Be7 8.0-0 0-0 9.c3 d6 10.Bb2 Nbd7 11.Nbd2 Qc7 12.Rc1 Rfd8 13.Qc2 Rac8 14.Qb1 d5 15.Bd3 Bd6 16.g3 (16.c4 dc4 17.Rc4 Qb8=) 16...e5 17.Bf5 e4 18.Ne1 c4 19.f4 ef3 20.Rf3 Re8 21.Nc2 Re7 22.Re1 Rce8 23.Re2 Nf8 24.Qe1 Bc8 25.Bc8 Qc8 26.Qf1 Qg4 27.Ba3 (27.Rf6!? gf6 28.e4 Re4 29.Ne4 Re4 30.Rf2=) 27...Ba3-/+ 28.Na3 Qg6 29.Qb1 Ne4 30.Ne4 Re4 (worse is 30...Qe4 31.Qe4 Re4 32.Nb1=; worse is 30...de4 31.Rf4 Rc8 32.Ref2=) 31.Qf1 Ne6 32.Nc2 h6 33.Rf5 Rd8 34.Ref2 Rd7 35.Qg2 Ng5 36.h4 Nh7 37.h5 Qe6 38.R5f4 Ng5 39.g4 Rf4 40.ef4-/+ Ne4 41.f5 Qf6 42.Rf3 Qg5 43.Re3 Nf6 44.Re1 Ng4 45.Re8 Kh7 46.Qg3? Qc1?? 47.Ne1= Nf6?? 48.Qe3 Qe3 49.Re3 Nh5 50.Nf3 Nf6 51.Ne5 Rc7 52.Kg2 Ne4 53.Kf3 g5 54.fg6 fg6 55.Kf4 Re7 56.Rh3 Re6 57.Re3 Rf6 58.Kg4 h5 59.Kh3 g5 60.Kg2 g4 61.Nc4 h4 62.Ne5 Rf2 63.Kg1 g3 64.c4 Ng5 65.Ng4 Nh3 66.Kh1 g2 (66...g2 67.Kh2 g1Q 68.Kh3 Qh1 69.Nh2 Qg2 70.Kh4 Rf4 71.Ng4 Qg4) 0–1. Munukka,Timo – Eklund,Joel (2075), Helsinki op6, 1999. (=1.d4 Nf6 2.b4)

3.a3 b5 4.e4= Ne4 5.Nd2 (5.Bb5 c6 6.Bd3=) 5...Nc6 (better is 5...Nd6=+) 6.Ne4+= Bf5?? (better is 6...de4 7.d5 Ne5 8.Bb5 Bd7+=) 7.Bb5+– Bd7 8.Nc5 a6 (8...Rb8 9.c4 dc4 10.Bc4+–) 9.Ba6 (9.Na6 Nb8 10.Bd7 Nd7+–) 9...e6 10.Bb5 Bc5 11.bc5 0-0 12.Nf3 Na5 13.Bd7 Qd7 14.Ne5 Qd8 15.0-0 c6 16.Rb1 Nc4 17.Nc6 Qf6 18.Ne5! Ne5 19.de5 Qe5 20.Bb2 Qg5 21.c6 Rfc8 22.Bd4 Rc6 23.c3 h6 24.a4 Rca6 25.Rb4 Qe7 26.Qb1 Ra4 27.Rb7 Qg5 28.Bc5 Rc4 29.Be7 Qe5 30.Re1 Qc3+/– 31.Bb4 Qf6 32.Bd6 Rcc8 33.Rb8 Qd8 34.Ra8 Ra8 35.Be5 Qg5 36.Qb7 Rd8 37.Qc7 Rf8 38.Bd6 Qd2 39.Kf1 Ra8 40.Bf4+/– Qd3 41.Re2?? Ra2?? 42.Qe5+= d4 43.f3 Ra1 44.Kf2+/– Rd1 45.h4 Kh7 46.Qe4+– g6 47.Qb7 Qf5 48.Be5 d3 49.Qb8 f6? 50.Rb2 g5 51.Rb7 Kg6 52.Qe8# 1–0. ajeffries (2055) – iboyd (2145), net–chess.com, 2009.

3.a3 Nc6 4.c3 e5 5.b5 Na5 6.de5 Ne4 7.Nf3 Bc5 8.e3 Bg4 9.Be2 Qe7 (better is 9...0-0!?=) 10.Qd5+/– (10.Qd5 Bf5 11.Qd1+/–) 1–0. capacuba (2305) – peonconorejas (2100), net–chess.com, 2014. (=1.d4 d5 2.b4 Nf6 3.a3 Nc6)

3.a3 Bg4 4.h3 Bh5 5.Nc3 e6 6.Bg5 Be7 7.Qc1 Nc6 8.e3 Qd7 9.Na4 (9.Nge2!?=) 9...Nd4!-/+ 10.Bf6 (10.ed4 Qa4 Discovered attack) 10...Bf6 11.ed4? (better is 11.Nc5 Nc6 12.Be2 Bc3 13.Kf1+=) 11...Qa4-+ 12.c3 0-0 13.Ne2 (13.Bd3 e5 14.g4 e4-/+) 13...b6 14.Nf4 Bg6 (14...Bg5!? 15.Qe3-+) 15.Ng6-/+ hg6 16.Bd3 c5! 17.Bc2 (17.bc5 bc5 Combination; 17.dc5 bc5 Combination) 17...Qb5 (17...Qc6 18.Bd3-+) 18.a4? (better is 18.Qb2-/+) 18...Qc4-+ 19.bc5 (19.Qd2 cb4 20.cb4 Rac8-+) 19...Qc3 20.Ke2 Bd4 21.Ra3 (21.cb6 Qa1 22.Qa1 Ba1 23.Ra1 ab6-+) 21...Qc5 22.f3 (22.Rd3 Bf2 23.Qd2 Bh4-+) 22...Rfc8 23.Kd1 Bf6 (23...Bc3 24.Rb3 Qf2 25.Bd3 Qg2 26.Rf1-+) 24.Rd3 (24.Ra2 Rc7 25.Qa3 Qd4 26.Qd3 Rc2 27.Qd4 Ra2-+ (27...Bd4?! 28.Rc2 Rb8 29.Kd2-+)) 24...Bc3 (24...Rc7 25.Qb1 Rac8 26.Bb3 Qc1 27.Ke2 Rc2 28.Bc2 Rc2 29.Qc2 Qc2 30.Rd2 Qc4 31.Kf2 Bd4 32.Rd4 Qd4 33.Kg3-+) 25.Rf1 Ba5 26.g4 (26.Qb1 Rc7-+) 26...Qd6 (26...e5!? 27.Qb1 e4 28.fe4 de4 29.Rd7-+) 27.f4 Rc4 28.Qb2 (28.Qe3 Rac8 29.Bb3 Qb4 30.Bc4 Rc4-+) 28...Rac8 (better is 28...Rf4 29.Rh1-+) 29.Rf2 (29.Bb3 Re4 30.Rd2 Bd2 31.Qd2 Qa3-+) 29...Qc5 30.Re2 (30.Rg2-+) 30...Qg1 (30...Qg1 31.Re1 Qe1) 0–1. capacuba (2305) – hobgoblin (2345), net–chess.com, 2014. (=1.d4 Nf6 2.a3 d5 3.b4 Bg4)

3.a4 Bf5 4.Ba3 e6 5.Nf3 Nbd7 6.e3 a6 7.Bd3 Bg4 8.b5 Ba3 9.Ra3 ab5 10.ab5 Ra3 11.Na3 Qe7 12.Nb1 Ne4 13.0-0 Nd6 14.Nbd2 0-0 15.Qa1 Nb6 16.Qc3 Ra8 17.Ra1 Ra1 18.Qa1 Bf5 19.Bf5 ef5 20.Qa7 Qe8 21.h4 Qa8 22.Qa8 Na8 23.Ne5 Nb6 24.Nb3 Nb5 25.Kf1 Nc4 26.Nc4 dc4 27.Na5 Nd6 28.Ke1 Kf8 29.f3 Ke7 30.d5 Kf6 31.f4 Kg6 32.Kf2 Kh5 33.g3 Kg4 34.Kg2 f6 35.h5 Kh5 36.Kf3 g6 37.Kf2 Kg4 38.Kg2 h6 39.Kf2 Kh3 40.Kf3 Kh2 41.g4 fg4 42.Kg4 f5 43.Kh4 Kg1 44.Kg3 Kf1 45.Kf3 Ke1 46.e4 fe4 47.Ke3 h5 (47...h5 48.Nc4 Nc4 49.Ke4 Kd2-+) 0–1. Habjan,Marko (1940) – Vidic,Miha (2050), Lucija SLO, 2011.

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

3.b5 Bd7 4.a4 c6 5.e3 Bf5 6.h3 (6.Ne2 a6 7.Ng3 Bg6=+) 6...Nbd7 (6...a6 7.bc6 Nc6 8.c4=+) 7.g4 (7.Nf3 Rc8=+) 7...Bg6 8.f4 (8.Nf3 Rc8=+) 8...h6 (8...e6!?-/+) 9.f5=+ Bh7 10.Nc3 (10.bc6 bc6 11.Nd2 e6 12.fe6 fe6=+) 10...e6-/+ 11.Bd3 (11.bc6 bc6 12.fe6 fe6=+) 11...Bb4 (11...ef5 12.bc6 bc6 13.gf5-+) 12.Bb2 (better 12.Bd2!?=+) 12...ef5-+ 13.gf5 cb5 (13...Ne4 14.Be4 Qh4 15.Ke2 Bc3 16.Bc3 Qe4 17.Nf3-+) 14.ab5 (better 14.Qf3 ba4 15.Ra4-/+) 14...0-0 (14...Ne4 15.Be4 Qh4 16.Ke2 de4 17.d5-+) 15.Ra4 (better 15.Qf3!?=+) 15...Bc3 16.Bc3 Re8 (16...Ne4 17.Be4 Qh4 18.Kd2 Qe4 19.Qf3 Bf5 20.Ra2-+) 17.Kf2? (better 17.Qf3!? Ne4 18.Be4 Qh4 19.Kd2 Re4 20.Ra1-+) 17...Nb6 (17...Ne4 18.Be4 Qh4 19.Kg2 Qe4 20.Nf3 Bf5 21.Ra2-+) 18.Ra5 (18.Ra2 Nc4 19.Nf3 Ne3-+) 18...Qd7 (18...Ne4 19.Be4 Qh4 20.Kg2 Qe4 21.Kh2 Qf5 22.Be1 Re3 23.Bg3-+) 19.Qf3 (better 19.Nf3-+) 19...Ne4 20.Be4 de4 (20...Re4 21.f6 Re6 22.Qg3 Rf6 23.Ke1-+) 21.Qg3 Qf5 22.Qf4 (22.Ke1 Nc4 23.Ra4 Rec8-+) 22...Rec8 (22...Qc8 23.Ba1 Re6 24.d5 Nd5 25.Qg4 Qc2 26.Qe2 Ne3 27.Bd4-+) 23.Qf5 Bf5 24.Ne2 g6 25.h4? (25.Ra3 Nd5-+) 25...Kh7 (25...Bg4!? 26.Ra3 Nd5 27.Bd2 Rc2 28.Rg1-+) 26.h5? (better 26.Rc1-+) 26...Bg4 27.Ng3 (27.hg6 fg6 28.Rha1 Be2 29.Ra7 Ra7 30.Ra7-+) 27...Rc3 28.Ra2 (28.Ne4 Rc2 29.Kg3 Nc4-+) 28...f5 29.Ne2 (29.Rha1 Nc4 30.Nf1 Bh5-+) 29...Be2 30.hg6 Kg6 31.Ke2 a5! 32.Rg1 (32.Ra5 Ra5) 32...Kf6 33.Rh1 Kg5 (33...Nc4 34.Rh6 Kg7 35.Rh2 Re3 36.Kd1-+) 34.Kf2 (34.Rg1 Kh5 35.Rh1 Kg4 36.Rg1 Kh4 37.Rh1 Kg3 38.Rg1 Kh2-+) 34...a4 35.Rg1 Kf6 36.Rg3 (36.Rh1 Rh8 37.Rb1 Rhc8-+) 36...Rh8 37.Kg2 (37.Ke1 f4 38.Rh3 a3-+) 37...a3 38.Kh3 (38.Kf2 Nd5 39.Rh3 h5-+) 38...h5 39.Kh4 f4 (better 39...Nd5 40.Ra1 Ne3 41.Rag1-+) 40.ef4 Rg3 41.Kg3 h4 42.Kh3 Nc4 43.c3 Kf5 44.Rf2 (44.b6 e3 45.d5 Nb2-+) 44...e3 45.Rf1 b6 (45...Nd2 46.Re1 a2 47.Rh1 Rg8 48.Kh2 Nf3 49.Kh3 Rg3) 46.d5 Nd6 (46...Nd2 47.Rg1 a2 48.d6-+) 47.Ra1 Nb5 48.c4 Nd6 (better 48...Nc3!? 49.Kg2 Rg8 50.Kh2-+) 49.Ra3 Nc4 50.Ra4 (50.Ra1 Kf4 51.Ra4 b5-+) 50...e2 51.Ra1 Kf4 (51...Kf4 52.d6 Nd6-+) 0-1. hamiltonharris (1810) - des (1675), ChessWorld.net, 2011. (=1.d4 d5 2.b4 Nf6)

3.b5 Bf5 4.Nf3 Nbd7 5.e3 e6 6.Nc3 Bb4 7.Bd2 Qe7 8.Qb1 (8.Bd3 h6+=) 8...Bg4 (8...0-0 9.Bd3+=) 9.Be2 Nb6 10.Ne5 (better is 10.0-0!?=) 10...Be2-/+ 11.Ne2 Bd2 12.Kd2 Ne4 13.Ke1 0-0 14.a4 f6 15.Nd3 e5 (15...Nc4 16.Qb3-/+) 16.f3 (16.Qb4 Qe6-/+) 16...Ng5 (16...Nd6 17.Kf2-/+) 17.a5 (17.Qb4!? Qd8 18.de5=) 17...Nc4-/+ 18.Qb3 (18.Qb4 Qe8 19.e4 ed4-/+) 18...Ne3 19.de5 (better is 19.a6 ba6 20.Ne5 Ng2 21.Kf2 fe5 22.Qd5 Kh8 23.Kg2 Nf3 24.Rhf1 Qg5 25.Kh1-+) 19...fe5-+ 20.Rg1?? (20.h4 Ne6 21.a6 b6-+) 20...Kh8 21.Nc3 e4 22.fe4 Ne4 23.Nd5 Nd5 24.Qd5 Nc3 25.Kd2 Nd5 26.Rge1 Qg5 27.Kd1 Qg2 28.Re2 Nc3 (28...Nc3 29.Kc1 Qe2-+) 0–1. Teuber,Alfons – Kuhnert,Klaus, Leverkusen op, 2001. (=1.d4 d5 2.b4 Nf6)

3.c3 b5 4.e3= e6 (4...Bd7 5.Nf3=) 5.Nf3 Bd6 (5...a5 6.Bb5 c6 7.Be2=) 6.Bb5+= Bd7 (6...Nbd7 7.Nbd2+=) 7.Ba4 (7.Bd3!?+/–) 7...0-0= 8.Nbd2 h6 (8...Qe8 9.Bd7 Nbd7 10.0-0=) 9.a3 (9.0-0 Ba4 10.Qa4 Nbd7+=) 9...Ne4 (better is 9...Ba4 10.Qa4 Nbd7+=) 10.0-0?? (better is 10.Ne4 de4 11.Nd2+/–) 10...Nc3-+ 11.Qc2 (11.Qb3 Na4 (11...Ba4?! 12.Qc3 a5 13.ba5+=) 12.b5 Nb6-+) 11...Na4 (11...Ba4?! 12.Qc3 Nc6 13.Nb3+=) 12.e4 de4 (12...Bb5 13.Re1-+) 13.Qe4 (13.Ne4 Bb5 14.Rd1 Nd7-+) 13...Bc6 14.Qe2 (14.Qc2 Bb5 15.Re1 Nc6-+) 14...Nd7 (14...Be7 15.Ne4-+) 15.Nc4 (15.Re1 Bd5-+) 15...Be7 (better is 15...Bb5!? 16.Qc2-+) 16.Na5 Bd5 17.Qd3 (17.Qc2 Nab6 18.Nc6 Qe8-+) 17...Rb8 (17...Bd6 18.Re1-+) 18.Ne5 (18.Qc2 Nab6-+) 18...Ne5 19.Qc2 (19.de5 Qd7-+) 19...Qd7 (better is 19...Ba8 20.de5 Qd5 21.f3 Qd4 22.Qf2 Qa1 23.Bg5-+) 20.Rb1 (20.de5 c5 21.Bd2-+) 20...Ng6 21.f3 e5 (better is 21...Qb5 22.Rd1-+) 22.g4 (22.Be3 Nb6-+) 22...Nh4 (better is 22...ed4 23.Bb2 Nh4 24.Qd3-+) 23.de5 Nf3 24.Rf3 Bf3 25.h3 Nb6 (better is 25...Qd4 26.Qf2 Qd1 27.Qf1 Bc5 28.bc5 Qf1 29.Kf1 Rb1 30.Kf2 Rc1 31.c6-+) 26.Be3 Qd5 27.Nc6 Rbe8 (better is 27...Qc6 28.Qc6 Bc6 29.Rc1-+) 28.Na7 Qe5 29.Qf2 Qe4 (better is 29...Ba8 30.Rf1 Qe4 31.Qf3-+) 30.Re1 Qb7 (30...Bf6!? 31.Nb5 Nc4 32.Rf1 Qe3 33.Qe3 Re3 34.a4-+) 31.Nb5 Nc4 32.Na7 Ne3 33.Qe3 Bh4 34.Qd2 (34.Rc1 Re3 35.Nc8 Qc6 36.Rf1 Qc2 37.Ne7 Be7 38.Rf3 Rf3 39.h4 Ra3 40.g5 Ra1) 34...Qa7 (34...Re1 35.Qe1 Qa7 36.Kh2 Be1 37.h4 Qf2 38.Kh3 Qh4) 35.Kh2 (35.Kf1 Re1 36.Qe1 Be1 37.Ke1 Rd8 38.Kf1 Rd1) 35...Be1 (35...Re1 36.Qe1 Be1 37.h4 Qf2 38.Kh3 Qh4) 36.Qa2 (36.g5 Bd2 37.Kg3 Qg1 38.Kf3 hg5 39.a4 Re3) 36...Re2 (36...Re2 37.Qe2 Be2 38.Kg2 Qf2 39.Kh1 Bf3) 0–1. Benreguia,Frederic – Martinez,Silvio, FICGS, 2012.

3.c3 h6 4.e3 Bf5 5.c4 e6 6.c5 c6 7.a3 Be7 8.Nc3 0-0 9.Bd3 Bd3 10.Qd3 Nbd7 11.Nf3 Re8 0–1. kylier – dsteel, net–chess.com, 2018. (=1.d4 d5 2.b4 Nf6 3.c3 h6)

3.Nc3 a6 4.e3 c6 (4...e5 5.de5 Bb4 6.Bd2 Bc3 7.Bc3=+) 5.Nge2 (5.a3 Bf5=) 5...Bf5 6.Ng3 Bg6 7.Bd3 e6 8.Bg6 hg6 9.a3 Nbd7 10.Qd3 Bd6 11.f4 Qc7 12.0-0 0-0-0 13.Rb1 Rh7 14.Na4 (14.e4!? de4 15.Nce4 Ne4 16.Ne4=) 14...Rdh8 15.h3 Ne4 (better 15...g5 16.fg5 Bg3 17.gf6 Nf6-/+) 16.Ne4+= de4 17.Qe4 Qd8 18.c4 Nf6 19.Qf3 Bc7 (19...Rh4 20.e4 Nh5 21.e5+-) 20.Nc5 Nd7 21.Na6 (better 21.Ne4!? Qe7 22.b5 cb5 23.cb5+-) 21...ba6+= 22.Qc6 Nb8 23.Qa8 Qe7 (23...g5!? 24.b5 ab5 25.fg5 Qg5 (25...bc4?? 26.Qb7 Kd7 27.Rf7 Ke8 28.Rc7+-) 26.Rb5 Qg3 27.Rf7 Qe1 28.Rf1 Qg3+=) 24.b5+- Rh3?? (better 24...ab5 25.cb5 Bd6+-) 25.gh3+- Qh4 (25...ab5 26.Bd2 Rh3 27.Qg2+-) 26.Rf3 (better 26.b6 Bd8+-) 26...f6 (26...Qe1 27.Kg2 ab5 28.cb5 Kd8+-) 27.ba6 Qe1 (27...Kd7 28.Rb7 Qe1 29.Kg2 Qe2 30.Rf2+-) 28.Kg2 g5 (28...Qe2 29.Rf2 Qh5 30.a7 Qh3 31.Kg1+-) 29.a7 (29.Rb8 Bb8 30.Qb7 Kd8 31.Qb8 Ke7 32.Qc7 Kf8 33.a7+-) 29...gf4 (29...Kd7 30.ab8N Rb8 31.Rb8 Bb8 32.Qb8 Qc1 33.Qb7 Ke8 34.Qc6 Kf7 35.fg5 Qb2 36.Rf2 Qa3 37.Qd7 Kg6 38.gf6 Qa8 39.Kg1 gf6+-) 30.Rb8 (30.ab8Q Bb8 31.Qb8 Kd7 32.Qa7 Kd8 33.Rb8) 30...Bb8 31.ab8Q (31.ab8Q Kd7 32.Qab7) 1-0. gumshoe – dsteel, net-chess.com, 2020. (=1.d4 Nf6 2.Nc3 d5 3.b4 a6)

3.Nc3 c6 4.h4 (4.a3 Bf5=) 4...Bf5 5.a3 a6 (5...Nbd7 6.Nf3=+) 6.f3 (6.Bf4 e6=+) 6...Qd6-/+ 7.Be3 (7.e3 Qg3 8.Kd2 b6-/+) 7...e5 (7...a5 8.b5-/+) 8.g4=+ Be6 9.Nh3 a5 10.b5 cb5 (10...Nbd7 11.Ng5=+) 11.Nb5= Qc6 12.a4 (12.Rb1 Nbd7=) 12...e4 (12...Bb4 13.Bd2 Bd2 14.Qd2=+) 13.Bg2 (13.Bd2 Bb4=+) 13...Na6 (13...Bb4 14.Bd2=+) 14.0-0 (14.Bd2 Bb4=+) 14...Be7 (14...Rc8 15.Bg5 Qc2 16.Nf4=+) 15.Bd2=+ Nd7 (15...Nb4 16.c3 ef3 17.ef3=+) 16.Ba5 Bh4 (better is 16...ef3 17.ef3 Bh4=) 17.Nc7?? (better is 17.fe4 h5 18.ed5 Bd5 19.e4=) 17...Nc7-+ 18.Qd2 Nf6 19.Nf4 b6 20.Bb4 Ra4 21.Ra4 Qa4 22.Qc3 Qd7 23.Qe3 g5 24.Nh3 h6 25.fe4 Ng4 26.Qf3 de4 27.Qe4 f5! 28.Qb7. suri5 – resident evil, internet, 2007.

3.Nc3 Nc6 4.a3 e5 5.b5? (better is 5.de5 Ne5 6.Bg5=+) 5...Nd4-+ 6.e3 Ne6 7.Nf3 Bc5 8.Ne5 0-0 9.Na4 Qd6 10.f4 Bd7 11.e4? (better is 11.c4 c6 12.cd5 cd5 13.Be2=+) 11...Ne4-+ 12.Nd7 Qd7 13.Rb1?? f5 14.c4?? Qd6 15.cd5?? Nf4 16.g3?? Bf2 0–1. Young,Thomas – Rice,Duncan, ZN–2009–0-00767, 2009.

3.Nc3 Bg4 4.h3 Bh5 5.Nf3 e6 6.a3 Bd6 (6...a5 7.ba5 Ra5 8.g4=+) 7.g4 Bg6 8.g5 (8.Nb5 Be7=) 8...Nfd7 (8...Ne4 9.Ne4 Be4 10.Bg2=+) 9.Nb5= Nc6 (9...Be7 10.Bf4 Na6 11.e3=) 10.Nd6 cd6 11.h4 0-0 12.e3 (12.h5 Be4=) 12...Be4 13.Bd3 Bd3 (13...Rc8 14.b5 Na5 15.h5-/+) 14.Qd3 a6 15.e4 (15.h5 b5=) 15...de4=+ 16.Qe4 Rc8 17.h5 Ne7 (17...d5 18.Qe3=+) 18.Ra2 (18.Qb7 Rc2 19.Qa6 Qc7=) 18...b5 19.h6 g6 20.d5? (better is 20.Bd2!?=+) 20...Nd5-+ 21.Bb2 Nc3?? (21...Rc4 22.Qd3-+) 22.Bc3-/+ Rc3 23.Qd4 Rf3 (23...Ne5 24.Qc3 Nf3 25.Qf3 Qg5+–) 24.Qg7# 1–0. Garyman – I need chocolate, ChessWorld.net, 2005.

3.Nc3 g6 4.b5 (4.Nf3 Bf5=) 4...Bg7=+ 5.Qd3 (5.Nf3 0-0=+) 5...0-0 (5...Bf5 6.Qd2=+) 6.Nf3 a6 (6...c5 7.dc5 Bf5 8.Qd4-/+) 7.Bf4 (7.e3 c6=+) 7...ab5 (7...Bf5 8.Qd2-/+) 8.Qb5 (8.Nb5 Na6=+) 8...c6 (8...Ne4 9.Qb3-/+) 9.Qd3 (9.Qb2 c5=+) 9...Na6 10.a3 (10.Qd2!?=+) 10...Bf5 11.Qd2 (11.Qd1 Qa5 12.Bd2 Nb4-/+) 11...Nb4! 12.Be5?? Nc2-+ 13.Kd1 Na1 14.Qb2 Nc2 15.e3 (15.Nh4 Na3 16.Nf5 gf5-+) 15...Na3 16.Be2 (16.Qb7 Qa5 17.Qb2 Nc4 18.Bc4 Qa1 19.Qc1 Qc1 20.Kc1 Ra1 21.Kd2 Rh1-+ (21...dc4?! 22.Ra1 Ne4 23.Ne4 Be4 24.Bg7 Kg7 25.Ra4=)) 16...Bc2 17.Kd2 Ne4 18.Ne4 de4 19.Bg7 Kg7 20.Ne1 Qa5 21.Kc1 Qd5 22.Nc2 Nc2 23.Kc2 Ra2 24.Kb1 Rb2 25.Kb2 Ra8 26.Ra1 Ra1 27.Ka1 Qa5 28.Kb2 Qd2 29.Kb3 Qe2 30.Kc3 Qf2 31.Kc4 Qe3 32.g3 Qd3 33.Kc5 e3 34.Kb6-+ e2 35.Kb7 e1Q 36.Kc6 Qe6 37.Kc5 Qdc4 (37...Qd6) 0–1. Drunken Pawn – malathi, internet, 2010.

3.c4 dc4 4.Nc3 (4.Nf3 e5! 5.a3 ed4 6.Nd4 c6-/+) 4...e6 (better is 4...e5 5.de5 Qd1 6.Nd1 Bb4 7.Bd2 Bd2 8.Kd2 Ne4 9.Ke3 Nc5-/+) 5.e4? (better is 5.a3-/+) 5...Bb4-+ 6.Bd2 Bc3 7.Bc3 Ne4 8.Qc2 Nc3 9.Qc3 0-0 (9...b5!? 10.a4 c6 11.Be2-+) 10.Bc4 Qf6 11.Nf3 c5! 12.Rd1 (12.dc5 Qc3 Double attack (12...Qc3 Pinning; 12...Qc3 Deflection)) 12...cd4 (12...Nc6 13.Bb5 cd4 14.Nd4-+) 13.Nd4 (13.Qd4 Qd4 14.Rd4 Nc6-+) 13...Qe5 14.Be2 Nc6! 15.Rd2 (15.Nc6 Qc3 Double attack (15...Qc3 Pinning; 15...Qc3 Deflection; 15...Qc3 Decoy)) 15...Nd4 16.Qd4 Qd4 17.Rd4 e5 18.Rc4 (18.Rd2 Bf5-+) 18...Be6 19.Rc2 Rac8 20.Rc8 Rc8 (worse is 20...Bc8 21.Bc4-+) 21.0-0 (21.Kd2 Ba2 22.Bf3 Bd5 23.Bd5 Rd8-+) 21...Ba2 22.h3 Bc4 23.Rc1 (23.Bc4 Rc4 24.Rd1 Kf8-+) 23...b5 24.Bc4 Rc4 (24...bc4!? 25.Kf1-+) 25.Rd1 Kf8 26.Rd5 b4 27.Rd7 (27.Re5 Rc6 28.Rb5-+) 27...a5 28.Kf1 (28.Rd8 Ke7 29.Rd5 b3 30.Re5 Kf6 31.Ra5 b2-+) 28...a4 (better is 28...b3!? 29.Rd2 Rc2 30.Rd8 Ke7 31.Rd5-+) 29.Ra7 (29.Ke2 a3 30.Ra7 Rc2 31.Kd3 Rf2-+) 29...b3 (29...b3 30.Rb7 Rc2 31.Rb8 Ke7-+) 0–1. doctice – zolerino (1750), gameknot.com, 2012. (=1.d4 Nf6 2.b4 d5 3.c4 dc4)

3.c4 e6 4.cd5 Nd5 (better is 4...Bb4!? 5.Bd2 Bd2 6.Nd2 ed5-/+) 5.a3= Nb4 6.ab4 Bb4 7.Bd2 Qd6? (better is 7...Qd4!? 8.Ra4 Bd2 9.Nd2 Qb2+=) 8.e3+– Bd7 9.Bb4 Qb4 10.Nd2 Bb5? (10...Bc6 11.Rb1 Qc3 12.Ne2+–) 11.Bb5 (better is 11.Rb1 Bf1 12.Rb4 (12.Kf1?! Qa5+–) 12...Bg2 13.Ngf3 Bh1 14.Qa4 Kd8 15.Rb7+–) 11...Qb5 12.Rb1 Qc6 13.Ngf3 Nd7 14.0-0 0-0 15.Rc1 Qd6 16.Nc4 Qd5 17.Rc2 c6 18.Ncd2 b5 19.Qb1 Rfc8 20.Rfc1 Nb6? (better is 20...a5+/–) 21.Rc5 Qd6 22.Ne5 Nd7 23.Nc6 Nc5-+ 24.Qb5? Rc6 25.dc5 Qd2 26.Rf1 Rac8 27.Qb7 Rc5 28.Qa7 Rc1 29.Qa6 Rf1 30.Qf1 Rc1 31.g3 Rf1 32.Kf1 Qd1 33.Kg2 Qe2 34.Kh3 f5 35.Kh4 g6 36.Kh3 Qg4 37.Kg2-+ h5 38.f3 (38...Qc4 39.Kf2-+). badboy1221 – palma26, Live Game Caissa's Web, 2004.

3.Nd2 e6 4.c3 Bd7 5.Ndf3 (5.Ngf3 Bd6+=) 5...Ne4 6.Qc2 Nc6 (6...a5 7.ba5 Ra5 8.Nd2+=) 7.Bf4 Bd6 (7...Nc3 8.a3 Nb5 9.e3 Na3 10.Ra3 Bb4 11.Rc3-/+) 8.Bd6 (8.e3 Bf4 9.ef4 a5=) 8...Nd6 (8...cd6!? 9.e3 Rc8+=) 9.e3= Qf6 10.Bd3 0-0-0 11.Ne2 g6 12.0-0 e5 13.de5 Ne5 14.Ne5 Qe5 15.a4 Bf5 16.b5 Bd3 17.Qd3 Qe4 18.Qd1 h5 19.Qb3 Nc4 20.Rad1 h4 21.Rd4+= Qe5 22.h3 Ne3? 23.fe3+– Qe3 24.Rf2 Rhe8 25.Rd5 Rd5 26.Qd5 Rd8? 27.Qf7 Rd1 28.Kh2 Rd2 29.Qg8 Rd8 30.Rf8 Qe5 31.Kh1 Rf8 32.Qf8 Kd7 33.Qf7 Qe7 34.Qf3 Qa3 35.Qg4 Kd6 36.Qg6 Kd7 37.Qg4 (37.Qg4 Ke8 38.Qh4+–) 1–0. kingtipper (2090) – flgs (1980), net–chess.com, 2004.

3.Nd2 g6 4.Ngf3 Bg7 5.e3 Nbd7 6.Bd3 0-0 7.h3 b6 8.0-0 Bb7 9.c4 dc4 10.Nc4 c5 11.bc5 bc5 12.Rb1 Qc7 13.Qe2 cd4 14.ed4 Ne4?? (better is 14...Bd5=) 15.Rb7+– (15.Be4?! Be4 16.Qe4 Qc4 17.Qe7 Qa2+=) 15...Qb7 16.Be4 Qb4 17.Ba3 Qc3 18.Ba8 Ra8 19.Rc1 (19.Rc1 Qc1 20.Bc1+–) 1–0. Anonymous – Anonymous, sv.lichess.org, 2011.

3.Qd3 e6 4.Bf4 (better is 4.a3!?+=) 4...Bb4-/+ 5.Bd2 Bd6 6.Ba5 (6.Nc3!? c5-+) 6...Nc6 7.h4?? (better is 7.Bc3-+) 7...Na5 8.a4. twestbrook – raichu (2000), net–chess.com, 2003.

3.e3 a5 4.c3 ab4 5.cb4 Bd7 6.Nc3 e6 7.Rb1 Nc6 8.a3 Na7 9.Nf3 b5 10.Bd3 Rb8 11.Qc2 Be7 12.Ne5 Bc8 (12...0-0 13.0-0+=) 13.0-0 (13.Nb5 Rb5 14.Qa4 Bd7 15.Nd7 Qd7 16.Qa7 Rb6+/–) 13...Nd7 14.Ne2 (14.Nb5!? Ne5 15.Na7 Nd3 16.Nc6+– (16.Qd3?! Bd7 17.b5 Rb6+=; 16.Nc8?! Nb4 17.Qa4 Qd7 18.Qd7 Kd7=)) 14...Ne5 15.de5 Bd7 16.Bb2 c5 17.bc5 Rc8 18.Qd1 Bc5+= 19.Nd4 g6 20.Qe2 b4 21.ab4 Bb4 22.Ba1 Be7 23.Nb5 Nc6 24.f4 Nb4? 25.Rfc1?? Nd3 26.Rc8 Qc8 27.Qd3 0-0 28.Nd4 Qa8 29.Bc3 Rc8 30.Ra1 Qb8 31.Rb1 Qc7 32.Bb4 Bb4 33.Rb4 Qa5 34.Qb1 Qa3 35.Rb3 Rc1 36.Kf2 Qc5 37.Qb2 Ba4 38.Rb4 Bd1 39.Kg3 Rc3 40.Rb8 Kg7 41.Qd2 Ba4 42.Rb7 Qc4?? 43.Ne6+– Kh6 44.Rc7 Bc6?? 45.Nd4 Rd3 46.Qf2?? Qd4= 47.Rc6?? Re3-+ 48.Kg4 Qd1 49.Qf3 Rf3 50.gf3 Qg1 51.Kh3 Qf2 52.Kg4 0–1. Nimylowych,William – Smith,Robert, East Lansing–ch MI op–B, 1991.

3.Be3 Bf5 4.f4 e6 5.Na3?? (better is 5.Bd2-/+) 5...Bb4-+ 6.Bd2 Ba3 7.c4 (7.Rb1 Nc6 8.e3 Rb8-+) 7...0-0 (better is 7...Bb2 8.Qa4 Nc6 9.Rd1 dc4 10.Qc4 Nd4 11.Bc1-+) 8.Qb3 Be7 9.cd5 Qd5 10.e4 (10.Nf3-+) 10...Qe4 11.Be2 Nc6 12.Qb7 (12.Nf3 Nd5 13.Rc1 Nf4 14.Bf4 Qf4-+) 12...Rab8 13.Qc7 Nd5 14.Qc6 Qg2 15.Bf3 Bh4 16.Kd1 Qf1 17.Be1 Qe1 0–1. russrogers – xadrez, net–chess.com, 2011.

3.f3 b6 4.e3 e6 5.a3 c5 6.c3 (6.bc5 bc5 7.Nc3 Be7+=) 6...Bd6 7.Bd3 (7.e4 cd4 8.ed5 Nd5 9.Qd4 0-0-/+) 7...c4 (7...0-0 8.Ne2-/+) 8.Bc2+= 0-0 9.a4 (9.e4 de4 10.Bg5 Bb7 11.fe4 h6 12.Bf6 Qf6= (worse is 12...gf6 13.Qg4 Kh8 14.Nd2+/–)) 9...Qc7 10.Ba3 (10.e4 e5 11.de5 Be5 12.Bg5-/+) 10...Bh2 (10...e5 11.b5 Re8 12.Ne2-/+) 11.Ne2 (better is 11.f4!? Bg3 12.Kd2=) 11...Bg3 (11...Bd6 12.b5-/+) 12.Kf1 (12.Ng3 Qg3 13.Kf1 Re8+=) 12...Bd6 13.Nd2 (13.b5 Nbd7-/+) 13...e5 (13...h6 14.e4 e5 15.b5 Ba3 16.Ra3-/+) 14.Qb1 (14.de5 Be5 15.b5 Rd8-/+) 14...g6 (14...h6!?-/+) 15.de5 Be5 16.f4 (16.Qe1 Re8-/+) 16...Bd6 17.Nf3 (better is 17.Qe1-/+) 17...Ne4 (17...Qe7 18.Bc1-+) 18.Qd1 (18.Be4 de4 19.Ng5 Nd7 20.Qe4 Nf6+=) 18...Be6 (better is 18...Rd8!?-/+) 19.Be4= de4 20.Ng5 h5 (20...Rd8 21.Ne6 fe6 22.Qc2=) 21.Ne4 (better is 21.Ne6!? fe6 22.Qd4+=) 21...Be7= 22.b5 (22.Qc2 Rd8=) 22...Rd8+= 23.Qe1 (23.Qc2+=) 23...Bg4 (better is 23...Bd5!? 24.Nf2 Ba3 25.Ra3 Qe7-/+) 24.Be7= Qe7 25.Qh4 Qh4 26.Rh4 Kg7 (26...Nd7 27.Nd6 a6 28.Nd4= (28.Nc4? ab5 29.Nd6 ba4-+)) 27.Nd4 (better is 27.Nf2=) 27...Re8 (27...a6 28.Nf2=) 28.Nf2 (better is 28.Nd6 Re3 29.Rg4 hg4 30.N4f5 gf5 31.Nf5 Kg6 32.Ne3+/–) 28...Re3+= 29.Ng4 (29.a5 A) worse is 29...Rc3 30.Ng4 hg4 31.ab6+= (worse is 31.Rg4 Nd7-/+); B) 29...Nd7+=) 29...hg4 30.Kf2 (30.Ra3!?+=) 30...Rc3-/+ 31.Rah1 (31.Rg4!? a6 32.f5-/+) 31...g3-+ 32.Ke2 Nd7 33.Rh7 (better is 33.Ne6 fe6 34.Rh7 Kf6 35.Rd7-+) 33...Kf6 34.Nf3 (34.Rh8 Rh8 35.Rh8 Ra3-+) 34...Re8 (34...Rc2!? 35.Kd1 Rg2 36.Ng5-+) 35.Kd2 Rd3 (35...Ree3 36.Ng5 Red3 37.Ke2 Rc2 38.Ke1-+) 36.Kc1 Re2 37.Ng5 Re7 (37...Ne5 38.Ne4 Re4 39.fe5 Re5 40.Rf1 Kg5 41.Rhf7-+) 38.Kc2 Nf8 (better is 38...Nc5 39.Re1 Rc7-+) 39.Rh8?? (39.Re1 Red7 40.Rh8-+) 39...Re2 40.Kb1 Ne6 41.Re8 (41.Nh7 Kf5 42.Rc8 Rb3 43.Ka1 c3 44.Rc3 Rc3-+) 41...Rg2 (better is 41...Rb3 42.Kc1 Ra3-+) 42.Ne6 (42.Ne4 Kf5 43.Re1 Rb3 44.Ka1 c3 45.Nc3 Rc3-+) 42...fe6 (42...Rb3 43.Kc1 Ra3 44.Kb1 c3 45.Rh2 gh2 46.Rh8 Rb2 47.Kc1 Ra1) 43.Rf8 (43.Re1 Rb3 44.Kc1 Ra3 45.R8e6 Kf5-+) 43...Ke7 44.Rc8 Rb3 (better is 44...Rh2 45.Rc1 g2 46.R8c4-+) 45.Kc1 Rh2 (better is 45...Rf2 46.Rh7 Kd6 47.Rc6 Kd5 48.Rd7 Ke4 49.Rc4 Kf3-+) 46.Re1 (46.Rh2 gh2 47.Rh8-+) 46...g2 47.Rc7 (47.Rc4 Re3! 48.Rg1 Rh1 49.Rc7 Kf6 50.Rc3 Rg1 51.Kb2 Rc3 52.Kc3 Rc1 53.Kd3 g1Q 54.Ke2 Re1 55.Kd3 Qe3 56.Kc4 Rc1 57.Kb4 Qc3) 47...Kf6 48.Rc6 Rh1 (better is 48...Re3! 49.Rd1 Rh1 50.Rcd6-+) 49.Rce6 Kf5 (better is 49...Kg7!? 50.R6e2-+) 50.R6e5 Kf4 51.R5e4 Kf3 (51...Kf3 52.Re6 Re1 53.Re1 Kf2-+) 0–1. Anikin,Victor (2000) – Mikeev,Valery (1845), Uliyanovsk Championship SF Rtg, 2007. (=1.d4 Nf6 2.f3 d5 3.b4 b6)

3.f3 e5 4.de5 Nh5 (worse is 4...Bb4 5.c3 Ba5 6.ef6 Qf6 7.e3+/–) 5.a3 (5.f4 Bb4 6.c3 Bc5+=) 5...Nc6 (better is 5...Qh4!? 6.g3 Ng3 7.hg3 Qh1-+) 6.f4-/+ Qh4 7.g3 Ng3 8.Nf3 (8.hg3 Qg3 Double attack (8...Qh1 Pinning; 8...Qh1 Deflection)) 8...Qh5 9.Rg1 (worse is 9.hg3 Qh1 10.Nc3 Be6-/+) 9...Ne4?? (better is 9...Nf1 10.Kf1 Bh3 11.Ke1 0-0-0-/+) 10.e3?? (better is 10.Qd5 Qf5 11.Nbd2+–) 10...Bg4-+ 11.Be2 (11.Bg2 Be7 12.Kf1 f6-+) 11...Bf3 12.Bf3 Qh4 (12...Qh2?! 13.Rg2 Qh4 14.Ke2-/+) 13.Kf1?? (13.Rg3 Ng3 14.hg3 Qg3 15.Kf1-+) 13...Nf2 (13...Qf2) 14.Qd5 (14.Qe1 Qh3 15.Kf2 Qh2 16.Rg2 Qh4 17.Ke2 Qe1 18.Ke1 Ne7+–) 14...Nh3?? (better is 14...Rd8 15.Qb5 Qh2+–) 15.Rg3 Be7 16.Bg2 (better is 16.Kg2 Ng5 17.fg5 Rd8+–) 16...Rd8 17.Qf3 (17.Rh3?! Rd5 18.Rh4 Rd1 19.Ke2 Rc1+=) 17...Ne5 (17...Ng5 18.Qe2 (18.Rg5?! Bg5 19.Bd2 Ne5 20.fe5 0-0+=) 18...0-0 A) 19.Rg5?! Bg5 20.b5 Ne5 21.fe5 Rfe8=; B) 19.fg5?! Qh2 20.Qe1 Rd1 (20...Ne5?? 21.Rh3 Nf3 22.Rh2 Ne1 23.Ke1+–) 21.Qd1 Qg3+/–; C) 19.Kg1+–) 18.fe5 Qc4 (18...Ng5 19.Qe2 Ne4 20.Be4 (20.Rg7?? Rd1 21.Qd1 Qf2) 20...Qe4 21.Bb2+– (21.Rg7 Qe5 22.Ra2 Qf6 23.Qf2 Qg7-+)) 19.Qe2 (19.Ke1 Qc2 20.Nd2+– (20.Bh3?? Qc1 21.Kf2 Qb2 22.Kg1 Qa1-+; 20.Rh3?? Qc1 21.Kf2 Qb2 22.Qe2 Qa1-+)) 19...Rd1 0–1. cannonp – flywheel, gameknot.com, 2010. (=1.d4 d5 2.b4 Nf6 3.f3 e5)

3.Nf3 Ne4 4.e3 Nc6 (4...Bf5!?=+) 5.b5= Nb4?? (better 5...Na5=) 6.a3+– Nf2 (6...e6+–) 7.Kf2 e6 (7...Bg4 8.ab4 e6 9.Ba3+–) 8.ab4 b6 (8...Bb4 9.c4+–) 9.c3 Bd6 10.Nbd2 0-0 11.e4 f5 (11...Qd7 12.Bd3+–) 12.ef5 Rf5 13.Bd3 Qf6 (13...Rf8 14.Re1 Qe8 15.Kg1+–) 14.Bf5 ef5 (14...Qf5 15.Qe2+–) 15.Qe2 Bd7 16.Re1 (better 16.Ne5 Bc8+–) 16...Qf8 (16...Re8 17.Ne5 Qh4 18.Kf1 Qh2 19.Ndf3+– (19.Nd7?! Qh1 20.Kf2 Qh4 21.Kg1 Qh2 22.Kf1 Qh1 23.Kf2 Qh4 24.Kg1 Qh2 25.Kf1=)) 17.Ne5 Be6 (17...Bc8 18.Ndc4! Be7 19.Qf3+–) 18.Ng6! hg6 19.Qe6 Kh7 20.Nf3 Re8 21.Ng5 Kh8 (21...Kh6 22.Re3 Bf4 23.Rh3 Kg5 24.Rg3 Kh4 25.Qg6 Re2 26.Kf3 Rf2 27.Kf2 Be3 28.Be3 Qb4 29.Rh3) 22.Qe8 (22.Qg6 Bg3 23.hg3 Re2 24.Re2 Qg8 25.Re8 Qe8 26.Qe8) 22...Qe8 (22...f4 23.Qg6 Qf5 24.Re8 Bf8 25.Qf5 a5 26.Rf8) 23.Re8 Bf8 24.Rf8 1–0. Silent Move (2115) – Graham H, redhotpawn.com, 2016.

3.Nf3 h6 4.a3 e6 5.Nc3 a6 6.h3 Bd6 7.e3 0-0 8.Bd3 b5 9.Ne2 Ne4 10.Be4 de4 11.Nd2 f5 12.0-0 Rf6 13.f3 ef3 14.Rf3 Bb7 15.Rf2 Rg6 16.Nf3 Bf3 17.Rf3 Nd7 18.Nf4 Bf4 19.Rf4 Qg5 20.Rf2 Rf8 21.e4 (21.a4!?=) 21...Qh4+= 22.ef5 Qf2?? (better is 22...Rf5 23.Rf5 ef5-/+) 23.Kf2+– Rf5 24.Kg1 Rgf6 (24...Nb6 25.Qe2+–) 25.Kh2 Nf8 (25...Nb6 26.Qd3+–) 26.Qd3 Ng6 27.Be3 Rh5 (27...Ne7 28.a4+–) 28.g3 (28.Qc3!? Rd5+–) 28...Rd5 29.c4 (better is 29.a4 Ne5 30.Qe4 Nc4+–) 29...bc4 (29...Ne5 30.Qe4 Nc4+–) 30.Qc4 Rf7 (30...Ne7 31.Bf4 Nf5 32.Be5+–) 31.Qa6 Nf8 32.Kg2 Rdf5 (32...Rfd7 33.Qc8 Rf7 34.Rc1+–) 33.Qc4 Rf3 34.Re1 h5 35.h4 Kh7 36.d5 (better is 36.a4!? R3f6+–) 36...ed5 37.Qd5 R3f5 38.Qd3 g6 39.Qc4 1–0. axxle (2350) – ctessman (2210), net–chess.com, 2014. (=1.d4 d5 2.Nf3 Nf6 3.b4 h6)

3.f4 Nc6 4.c3 (4.b5 Nb8+=) 4...Bf5 5.Na3 (5.Nf3 e6+=) 5...e6 6.Qd2 (6.Nf3 Ne4-/+) 6...Bd6 (6...Ne4 7.Qe3-+) 7.g3 (7.Nf3 Ne4 8.Qe3 a5-+) 7...0-0 (7...Ne4 8.Qe3-+) 8.Nf3-/+ h6 (8...a5 9.b5 Na7 10.Qd1-+) 9.Qe3 Ne4 10.h4? Ng3-+ 11.Rg1 Ne4 12.Nb5 Be7 13.Rb1?? Nd2 14.Qd2?? Bb1-+ 15.Bh3 Bh4 16.Kd1 Bf5 (16...Bf5 17.Bf5 ef5 18.Nh4 Qh4 19.Nc7 Rad8-+; 16...Bf6 17.f5 a6 18.Na3 Bf5 19.Bf5 ef5 20.Qh6-+) 0–1. lilem – Benjamz64, internet, 2007.

3.f4 Ne4 4.a3+=.

3.f4 e6 4.c3 (4.a3 Be7+=) 4...Be7 (4...Bd6 5.e3-/+) 5.h4 (5.Nf3 0-0+=) 5...0-0 (5...a5 6.b5-/+) 6.g3 (6.Nf3 a5 7.b5 c5-/+) 6...a6 (6...Nbd7 7.Nd2-/+) 7.e3 (7.Bg2 Bd7-/+) 7...Nc6 (7...Ne4 8.Qf3-/+) 8.a3 (8.Bd3 Na7-/+) 8...b5 (8...Bd7 9.Nd2-/+) 9.Nd2 (9.a4 Rb8 10.Bd3+=) 9...a5 (9...Bd7 10.Bd3+=) 10.Bb2 (10.Bb5 Bd7 11.ba5 Na5=) 10...ab4 (10...Na7 11.ba5 Bd7 12.Ngf3-/+) 11.ab4 Ra1 12.Ba1 Bb7 (12...Na7!?+=) 13.Bb5= Na7 (13...Qd6=) 14.Qe2 (14.Bd3 Bc6+=) 14...Qa8 (14...Nb5 15.Qb5 Qa8 16.Qa5+=) 15.Bb2 (15.Bd3 Nb5 16.Bb2 Qa2=) 15...c6 (better is 15...Nb5!? 16.Qb5 Qa2-/+) 16.Bd3+= Nb5 17.Ngf3 (17.Nb3 Nd6+=) 17...Qa2 18.Nf1 (18.Nb1 Ra8+=) 18...Ng4 (18...Ne4 A) 19.Bb5 Qb1 (19...cb5?! 20.Rh2+=) 20.Qd1 Qb2-+; B) 19.Ng5 Nbc3 20.Bc3 Qe2 21.Ke2 Nc3 22.Kd2 Bb4 23.Bh7 Kh8 24.Bd3+=) 19.N1h2 (19.Ng5 h6 A) 20.Bb5? Qb1 (worse is 20...cb5 21.Qc2 hg5 22.hg5-+) 21.Qd1 Qd1 22.Kd1 Nf2 (22...cb5?! 23.Nh3=) 23.Ke1 Nh1-+; B) 20.Nf3=) 19...Ne3+= 20.Kf2 (20.Bc1 Qe2 21.Ke2+=) 20...Nf5 (better is 20...Nc4!? 21.Bc4 dc4+= (worse is 21...Qc4 22.Qc4 dc4 23.Ra1+=)) 21.Ra1 (21.Qc2 Na3 22.Ba3 Qa3+=) 21...Qb3 22.Rb1 (better is 22.Qc2!? Qc2 23.Bc2+=) 22...Nc3+= (22...Nc3 23.Bc3 Qc3 24.Bf5 ef5 25.Qe7 Qc2 26.Ke3 Qb1 27.Qb7 Qc2=). brkst – hrwiltrout, gameknot.com, 2015. (=1.d4 d5 2.f4 Nf6 3.b4 e6)

3.f4 h5 4.Nf3=+ h4 5.a3 h3 6.g3 Ne4 7.Bb2 f6 (7...Bf5 8.Nbd2=+) 8.Qd3 c6 9.Nc3 Bf5 10.g4 Ng3 11.gf5 Nh1 12.Nd2 Qd6 (12...Qd7 13.Qf3+=) 13.Qf3+- Nd7 (13...e6 14.fe6 f5 15.Nd1+-) 14.e4 (14.Qh1?! Qf4 15.b5 Qh4 16.Kd1 Qd4+=) 14...e5 (14...de4!? 15.Nce4 Qc7+-) 15.de5+- fe5 16.ed5 0-0-0 (16...cd5 17.Nd5 0-0-0 18.0-0-0+-) 17.0-0-0 (17.Nce4 A) 17...Qd5?? 18.Bc4+- (18.Qh1?! ef4 19.Qg1 Re8+-); B) 17...Qh6 18.dc6 Qh4 19.Ke2 bc6 20.fe5 Qh5+-) 17...c5 (17...ef4 18.Qh1 Nf6 19.Nde4+-) 18.Nb5 Qa6 (18...Qb8 19.fe5 Ne5 20.Qh1 a6 21.Na7 Qa7 22.Be5 cb4+-) 19.fe5 (19.Qh1?! ef4 20.Nd4 Qd6+-) 19...Ne5 (19...Qa4 20.Qh1 cb4+-) 20.Be5 cb4 21.f6 Nf2 (21...gf6 22.Bf6 Bc5 23.Bh3 Kb8 24.Be5 Bd6 25.Nd6 Ka8 26.Bh8 Rh8+-) 22.Qf2 Rd5 23.Qf5 Kd8 (23...Rd7 24.Ne4 Qa3 25.Na3 Bd6 26.Nd6 Kc7 27.Ndb5 Kc6 28.Qd7 Kb6 29.Nc4 Kc5 30.Bd4) 24.Bc7 Ke8 25.f7 Ke7 26.Re1 Qe6 (26...Re5 27.Re5 Qe6 28.Qe6) 27.Qe6 1-0. Adlai – Gandra, internet, 2020.

3.Bf4 e5 4.Be5 Bb4 5.c3=+.

3.Bf4 g6 4.e3= Bg7 (4...Bg4 5.Nf3=) 5.Nf3 Nc6 6.b5 Na5 7.Be2 0-0 8.0-0 c6 9.a4 (9.Ne5 cb5 10.Bb5 Bf5+=) 9...Nh5 (9...cb5 10.ab5 Bf5 11.Ne5+=) 10.Be5= f6 11.Bf4 (11.Bg3 Ng3 12.fg3 e5=) 11...Nf4 12.ef4 Bg4 13.c3 (13.Re1 e6=) 13...Qd6 14.Nfd2 Qf4?? (better is 14...Bf5-/+) 15.Bg4+– e5 16.g3 (16.Be6 Kh8+–) 16...Qg5 17.h4 Qh6 18.c4 dc4 19.Nc4! Nc4 20.Be6 Kh8 21.Bc4 ed4 22.Qd4 f5+/– 23.Qe3?? Qe3-+ 24.fe3 Ba1 25.Nd2 Be5 26.Kg2 Rad8 27.Nf3 Bc7 28.Ng5 Rd2 29.Kg1 Bg3 30.h5 Kg7 31.Ne6 Kf7 32.Nf8 Kf8 33.hg6 hg6 34.bc6 Rc2 35.Bd5 bc6 36.Bf3 c5 37.e4 Kg7 38.e5? Be5 39.Re1 Kf6 40.a5 c4 (41.Kf1 Bc3-+; 40...Bd4!? 41.Kh1-+) 0–1. Ramo,Monica – Grau,Monica, Campeonato de Espana, 1995.

3.g3 Bf5 4.Bf4 e6 5.a3 Be7 6.Nd2 0-0 7.c4 (7.e3 Nbd7+=) 7...c6 (7...dc4!? 8.Rc1 b5-/+ (8...Qd4?! 9.Rc4 Qd5 10.e4 Ne4 11.Bg2+=)) 8.e3 Nbd7 9.c5 h6 10.f3 b6 (10...Nh5 11.Bd6+=) 11.Rc1 bc5 12.dc5 (12.dc5 e5 13.e4 de4 14.Be3-/+; better is 12.bc5!? Qa5 13.Qb3=). Friedrich,M (2000) – Aigars,Jeluskins (1940), remoteschach.de, 2005.

4.g4 Bg6 5.f4 (5.a3 e6+=) 5...e6 (5...e5 6.fe5 Ne4 7.Nf3 Bb4 8.c3-/+) 6.a3 a5 7.ba5 (7.b5 Ne4 8.Nf3 Bd6-/+) 7...Ne4 8.Bg2?? (better is 8.Nf3-/+) 8...Qh4 9.Kf1 Qf2# 0–1. corint – pierre (2185), internet, 2007.

3.Bg5 Ne4 4.Nf3 Ng5 5.Ng5 -+.

3.Bg5 Bf5 4.Nc3 e6 5.e3 Bb4-/+ 6.Nge2 h6 7.Bf6 gf6 8.Rb1 Qd6 9.Ng3?? Bg6 10.Bb5? c6-+ 11.Bd3 Bc3 12.Kf1 b5 13.Ne2?? Ba5-+ 14.Bg6 fg6 15.c3 Nd7 16.Nf4 g5 17.Ne2 f5 18.h3 e5 19.de5 Ne5 20.Nd4 Qf6 21.a4 ba4 22.Qa4 Bc3 23.f4 Nc4 24.Rb7 Nd2 25.Ke2 0-0 26.Qc2 Ba5 27.Qc5 Bb6 28.Qc6 Qc6 29.Nc6 Ne4 30.Ne7 Kh8 31.Ng6= Kg8 32.Ne7 Kh8 33.Ng6= Kg8 34.Ne7 Kf7 35.Nf5 Kg6 36.Rg7?? Kf5 37.g4 Ke6 38.f5 Kd6 39.Rg6 Kc5 40.Rc1 Kb5 41.Rh6 Rac8 42.Rb1 Ka6 43.Ra1 Kb7 44.Rh7 Rc7 45.Rc7 Kc7 46.Rc1 Kb7 47.Kd3 Nf2 48.Ke2 Nh3 49.Rh1 Rh8 50.Kf3 Bc7 51.Rb1 Kc6 52.Rc1 Kd7 53.Ra1 a5 54.e4 de4 55.Ke4 Nf2 56.Kf3 Ng4 57.Kg4 Rg8 58.Ra4 Kc6 59.Rc4 Kb6 60.Ra4 Ka6 61.Kh5 g4 62.Rg4 Rg4 63.Kg4 Kb5 64.f6 Bd6 65.Kf5 a4 66.Ke6 Bb4 67.f7 a3 (68.Ke5 a2-+) 0–1. milanista – dunk (1665), internet, 2007.

4.ba5 c5 5.e3 Nc6 6.Nf3 Bg4 7.a6 ba6 8.Be2 cd4 9.ed4 e6 10.0-0 Be7 11.Be3 0-0 12.Nbd2 Ne4 13.Ne4 de4 14.Ne5 Ne5 15.Bg4 Ng4 16.Qg4 f5 17.Qe2 f4 18.Bd2 Qd4 19.Rad1 f3 20.gf3 Rf3 21.Bb4 Bg5?? (better is 21...Qf6+=) 22.Rd4+– 1–0. capablancaven (1885) – tsuukvanki (1905), gameknot.com, 2011.

4.b5 Bf5 5.Nf3 (5.Bf4 e6 6.Nf3 Be7 7.e3 Nh5) 5...e6 (5...Ne4 6.Bf4 e6 7.e3 g5) 6.Nc3 (6.Bf4 Be7 7.e3 Nh5) 6...Nbd7 (6...Bd6 7.g3=+ (7.Nh4 Bg4) 7...0-0) 7.e3 (7.Nh4 Bg4= –0.22 (7...Be4=+)) 7...Bd6=+ 8.Be2 0-0 9.Bd3 (9.Bb2 h6=+) 9...Ne4-/+ 10.Bb2 Qe7 11.Qc1 b6 (11...Rac8 12.0-0-/+) 12.0-0 Qf6 13.Qe1 Qh6 14.Na4 (14.h3 Rfe8=+) 14...Qh5 (better is 14...f6 15.Qd1 Ng5-+) 15.Qe2?? (better is 15.Be2-/+) 15...Bg4-+ 16.h3 (16.Rfc1 Bf3 17.Qf3 Bh2 18.Kh1 Nf2 19.Qf2 Bg3 20.Kg1 Bf2 21.Kf2 Qh4 22.Ke2 Qg5-+) 16...Ng5 17.Bh7 Kh8 18.Ng5 Be2 19.Rfe1 Bb5 20.Nc3 Qg5 21.Nb5 Kh7 22.Nd6 cd6 23.Ra2 b5 24.Bc1 Nf6 25.Rb2 Ne4 26.Rb5 Qh4 27.Rf1 Nc3 28.Rb7 Ne2 29.Kh2 Nc1 30.Rc1 Qf2 31.Rb3 g5 32.Rd3 Rh8 33.Rcd1 Kg6 34.Kh1 Rh3! 35.gh3 Rh8 36.e4 de4 37.Rc3 e3 38.Re3 Qe3 39.Kg2 Rh3 40.Rd3 Rg3 41.Kh1 Qg1# 0–1. Jenneborg,Seved – Kaniak,Andrzej, email 4AMM–09, 1997.

(--> 2.d4 e6 3.a3 d5).

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

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

4.e3 Bd6 5.Nf3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d4 Bd6 5.e3).

4.Nf3 a5 5.b5 c5 6.e3 Nbd7 7.Bd3 Bd3 8.cd3 cd4 9.ed4 (worse is 9.Nd4 e5 10.Ne2 Rc8-/+) 9...e6 10.Nc3 Bd6 11.0-0 0-0 12.a4 Rc8 13.Bd2 e5 14.Qb3 ed4 15.Nd5 Nc5 16.Nf6 Qf6 17.Qd5 Rfd8 (worse is 17...Nd3 18.Qb7 Nc5 19.Qd5=) 18.Qa2 (18.Ba5?? Bh2! 19.Nh2 Rd5-+; 18.Qd4?? Bh2! 19.Kh2 Rd4 (19...Qd4?! 20.Nd4 Rd4 21.Rfc1+=) 20.Nd4 Qd4-+) 18...Bf4 19.Bf4 Qf4 20.Qa3 Ne6 21.Rfc1 g6 22.Re1 Rc3 23.Qe7 Rc7 24.Qa3 Rdc8 25.Rad1 Rc3 26.Qa2 R8c5 27.Qe2 Rc2 28.Qf1 Kg7 29.Re4 Qf6 30.Re2 Nf4 31.Red2 Nh3 32.Kh1 Rd2 33.Rd2 Rc3 34.Ne1 Nf4 35.g3 Nd5 36.Nc2 Rb3 37.Kg2 Nc3 38.f4 Rb2 39.Qf3 b6 40.f5 Qf5 41.Rf2 Qf3 42.Kf3 Na4 43.Nd4 Rb4 44.Ke4 Nc3 45.Ke5 a4 46.Rc2 Nb5 47.Nb5 Rb5 48.Kd4 Rb4 49.Kd5 (49.Ke5 a3 50.Ra2 Rb3-+) 49...b5 50.Kc5 Rb3 51.Ra2 a3 52.d4 b4 53.d5 Rb1 54.Kb5 Kf8 55.d6 (55.Kc4 Ke7 56.Kd4 Rb2-+) 55...Ke8 56.Kb6 (56.h4 Kd7 57.Kc5 b3 58.Ra3 Rc1 59.Kd5 b2 60.Ra7 Kc8 61.d7 Kd8-+) 56...Kd7 57.Kc5 (57.Kb5 Rb2 58.Ra1 a2-+) 57...Rb2 58.Ra1 a2 59.Rf1 (59.Re1 b3 60.Kb4 Kd6 61.Rd1 Kc6 62.Rc1 Rc2 63.Kb3 Rc1 64.Ka2 Rc2 65.Kb3 Rh2-+) 59...f5 60.Re1 Rb1 61.Re7 Kd8 62.Ra7 0–1. condoru (2075) – acalado58 (2170), gameknot.com, 2015.

4.Nf3 e6 5.e3 c6 6.c4 dc4 7.Bc4 Be7 8.Nbd2 Nbd7 9.Nb3 Qc7 10.0-0 0-0 11.Bb2 Nb6 12.Bd3 Bd3 13.Qd3 Na4 14.Bc1 a5 (14...Rfd8!?=) 15.Na5+/- Rfd8 (15...c5 16.dc5 Nc5 17.Qc2+/- (17.bc5?! Rfd8 18.Qb3 Ra5=)) 16.Qc2 (16.Qc2 Nb6 17.e4+/-) 1-0. 9maxmut9 (2365) - breughel (2350), gameknot.com, 2017.

4.Nf3 e6 5.e3 Nbd7 6.Nbd2 Bd6 7.Bb2 0-0 8.c4 c6 9.Be2 Ne4 10.c5 Bc7 11.0-0 Qf6 12.h3 a5 13.Qb3 Nd2 14.Nd2 Qg6 15.Kh1 a4 16.Qd1 Bc2 17.Bh5 Qf5 18.Bg4 ½–½. Baer,Werner (1910) – Berger,Waltraud (1875), 13. VCC–Open, 2003.

4.Nf3 e6 5.Nh4 Bg4 6.g3 Be7 7.Bg2 a5 8.Nf3 (better is 8.b5!?=+) 8...ab4-/+ 9.Nbd2 (better is 9.0-0!?-/+) 9...ba3-+ 10.Ne5 Bf5 11.c4 c6 (11...b6 12.Qb3 Qd6 13.c5 bc5 14.Ra3-/+) 12.0-0 (12.Qb3 b5! 13.cb5 Qb6 14.bc6 Qd4-/+) 12...0-0 (12...b5 13.c5 b4 14.Ndf3-+) 13.Qb3 (13.c5 Nbd7 14.Nd7 Nd7 15.Ba3 b6-+) 13...Qc7 (13...dc4!? 14.Ndc4 b5 15.Na3-+) 14.cd5 ed5 (14...Nd5?! 15.e4 Be4 16.Be4+=) 15.Ba3 Ra3 16.Ra3 Ba3 17.Qa3 Nbd7 18.f4 h6 19.Rc1 Re8 20.Ndf3 Nb6 21.Nh4 Ra8 22.Qc5 Be4 23.Qb4 Nc8 24.e3 (24.Be4!? Ne4 25.Nf5-+) 24...Nd6 0–1. "pillsbury" (1995) – flagged (1740), net–chess.com, 2007.

4.Bf4 e6=.

5.c3 a5 6.Qa4 Nbd7-/+ 7.b5 Ne4 8.f3?? Qh4-+ 9.Kd1 Nb6 10.Qb3 Nf2 (11.Kd2 Nh1-+) 0–1. Netto – pierre (2070), internet, 2006.

5.c4 a5 6.b5=+.

5.c4 Nbd7 6.Nd2 Be7 7.Ngf3 0-0 8.Nh4 Bg4 9.Qc2 c6 10.h3= Bh5 11.Bd3 Ne4 12.Nhf3 f5 13.Rb1 Rc8 14.c5 Qe8 15.Bb2 Rc7 16.Ba1 b6 17.0-0 Qg6 18.Rb3 b5 19.Rbb1 Nd2 20.Nd2 Nf6 21.f3 Qh6 22.Rfe1 g5 23.a4+= ba4 24.Bf1 g4= 25.Qa4 gh3 26.b5 Qg5 27.Bc3 Qg3 28.bc6 Ne4 29.Ne4?? fe4-/+ 30.f4 Bf3 31.Qc2 Rf6 32.Rb8 Kf7 (33.Rh8 hg2 34.Bg2 Rc6 35.Rh7 Ke8 36.Rh8 Rf8-/+) 0–1. Baer,Werner – Woelfelschneider,Peter, TT–04 TSC, 2002.

5.c4 Nbd7 6.Bd3 dc4 7.Bc4 a5 8.b5 Bd6 9.Bd3?! Ne4 10.Be4 Be4 11.Nf3 Qf6 12.Nc3 Nc5 13.Ne4 Ne4 14.0-0 Qh6 15.Ne5 f5 16.a4! 0-0 17.f3 Nc3 18.Qd3 Be5 19.de5 Nd5 20.e4 Nb4 21.Qd7 Qg6 22.ef5 Rf5 23.Qc7 Nd3 24.f4 +–. Grzywna – NN, Poland, 1985.

5.c4 Nbd7 6.Nf3 Bd6=+.

5.Nd2 Bd6 (5...Be7 6.Ngf3=+) 6.Be2 (6.c4 0-0=+) 6...0-0 7.Ngf3 a5 (7...Ne4 8.Ne4 de4 9.Nd2=+) 8.c4 (8.ba5!? Ra5 9.c4=+) 8...ab4 9.c5 Be7 10.a4 (10.Nh4 Bg4! 11.Bg4 Ng4 12.Qg4 Bh4-/+) 10...Nfd7 (10...Ne4 11.Ne4 de4 12.Ne5-/+) 11.0-0 (11.Qb3 b6 12.Qb4 bc5-+) 11...Nc6 12.Nb3 e5 (12...b6 13.Bb5 Na5 14.cb6 cb6 15.Bb2-/+) 13.de5 (13.a5 Bg4-/+) 13...Nc5 14.Bb5 (14.Nc5 Bc5 15.Bb2 Ra5-/+) 14...Nb3-+ 15.Qb3 Na5 16.Qd1 (16.Qb2 c6 17.Be2 Nc4-+) 16...c6 (16...c5 17.Ra2-+) 17.Bd3 Qd7 18.Nd4 Bd3 19.Qd3 c5 20.Nb5 c4 21.Qe2 Nb3 22.Ra2 Nc5 23.Qd1 b3 24.Ra1? Na4 25.Ba3 Ba3 26.Na3 b2 (26...b2 27.Rb1 Nc3-+) 0–1. capacuba (2270) – bigart (2715), net–chess.com, 2008.

4.Qa4 Bd7 5.Qa3 (5.b5 Bf5+=) 5...a4 (5...e6!? 6.Qb2 Ba4-+) 6.Nd2 b5 (6...e6 7.e3+=) 7.Ndf3 e6 8.Bg5 Be7 9.Qc1 0-0 10.e3 h6 11.Bf6 Bf6 12.Ne2 Re8 13.Nf4 e5 (13...Bc6 14.Be2+=) 14.de5 (14.Nd5!? ed4 15.cd4+/-) 14...Be5= 15.Nd5 c6 (15...Be6!? 16.Ne5 Bd5+=) 16.Ne5+= Re5 17.Nf4 Qg5 18.Nd3 Re8 19.g3 Bf5 20.Nc5 (20.Nf4 Be4 21.Bg2 Bg2 22.Ng2 c5=) 20...Nd7 (better is 20...Na6!? 21.Na6 Ra6=) 21.Nd7+= Bd7 22.Bg2 h5 23.0-0 h4 24.Qd2 (24.Rd1!? Bg4 25.Rd4 hg3 26.hg3+/-) 24...Rad8= 25.Qd4 hg3 26.fg3 Qe3 (26...Bh3 27.Qf4 Qf4 28.ef4 Bg2 29.Kg2 Re2 30.Rf2+=) 27.Rf2 (27.Qe3!? Re3 28.Rad1+/-) 27...Qd4 28.cd4 Re3 29.Raf1 f6 30.Rd1 White plans d5 30...Rc3 31.d5 Be6 32.Rfd2 Bd5 33.Bd5 Rd5 34.Rd5 cd5 35.Rd5 Rc1 36.Kg2 Rc2 37.Kh3 Ra2 38.Rb5 Rb2 39.Ra5 Rb4 40.g4 Rb3 41.Kh4 White prepares the advance g5 41...a3 42.Kh5 Kh7 43.g5 Rh3 44.Kg4 Rh2 45.Ra3?? (better is 45.gf6 gf6 46.Ra3=) 45...Rg2-+ 46.Rg3 (46.Kf3 Rg5 47.Rc3-+) 46...Rg3 47.Kg3 fg5 48.Kg4 Kg6 49.Kg3 Kf5 50.Kf3 g4 51.Kg3 Kg5 52.Kg2 Kf4 53.Kf2 g6 54.Kg2 g3 55.Kg1 Kf3 56.Kf1 g2 57.Kg1 g5 58.Kh2 Kf2 0-1. preethan (2135) - justforfun (2510), net-chess.com, 2015.

4.b5 Bf5 5.a4 e6 6.Nf3 c5 7.e3 Bd6 8.Bd3 Bd3 9.Qd3 0-0 10.Nbd2 Nbd7 11.0-0 cd4 (11...Qc7 12.c4=) 12.cd4= Rc8 13.Bb2 Qe7 14.Rac1 h6 (14...Nb6 15.Qb3=+) 15.Rc2 Rc2 16.Qc2 Nb6 17.Rc1 (17.Qb3 Rc8=) 17...Rc8 18.Qb3 Rc1 19.Bc1 Qc7 20.Bb2 Nc4 (20...Bb4 21.Ba3=+) 21.g3 (21.Nc4 dc4 (worse 21...Qc4 22.Qc4 dc4 23.Nd2+/-) 22.Qc2 Nd5=) 21...Bb4=+ 22.Bc3 (22.Qc2!?=+) 22...Ne3!-/+ 23.fe3 Bc3 (23...Qc3 24.Qc3 Bc3-+) 24.Nb1? (better 24.Qc2!?-/+) 24...Bb4-+ 25.Ne5 Qc1 26.Kg2 Ne4 27.Nf3 g5 (better 27...Qc4 28.Qb2 Bd6-+) 28.h3? (28.g4-+) 28...h5 29.g4 h4 30.Qd3 Qb2 (30...Qb2 31.Nbd2 Bd2-+) 0-1. banjoband (2010) - Nerwal (2040), Rated Blitz game, lichess.org, 2014. (=1.d4 Nf6 2.c3 d5 3.b4)

4.a4 Bg4 5.h3 Bh5 6.g4 Bg6 7.Bg2 Nbd7 8.e4? Ne4-+ (worse is 8...de4 9.g5 Nd5 10.Qe2-/+) 9.Ne2 e5 10.0-0 Bd6 11.de5 Ne5 12.f4= Qh4 13.fe5 Be5 14.Bf4 f6 15.Be5 fe5 16.Qe1 Qg5 17.Be4 Be4 18.Ng3 Bd3 19.Nf5 0-0-0?? 20.Nd2?? h5?? 21.Rf3?? e4 22.Rg3 hg4 23.hg4 Rh7 24.Qf2?? Rdh8-+ 25.Qg2 Rh1! 26.Qh1 Rh1 27.Kh1 Qd2 28.Rag1 Qc3 29.g5 g6 30.Ne7 Kc7 31.Ng6 e3 32.Nf4 Be4 33.Kh2 Qh8 34.Rh3 Qe5 35.Kg3 Qg5 36.Kh2 Qf4 37.Rhg3 Qh4 38.Rh3 Qf4 39.Rhg3-+ d4 40.b5 cb5 41.ab5 Kb6 42.Rc1 Qf2 43.Kh3-+ Bf5 44.Kh4 Qh2 45.Kg5-+ Qg3 46.Kf5 Qf2 47.Ke4 Qd2 48.Rh1 e2 49.Rh6 Kb5 50.Rh5-+ Kc4 51.Rh7 e1Q 52.Kf5 Qdf2 53.Kg4 Qeg1 (53...Qeg1 54.Kh5 Qfh2#; 53...Qg3 54.Kf5 Qee5#) 0–1. aplws – bratek55 (1670), kurnik, 2011.

4.a4 Bg4 5.h3 Bh5 6.g4 Bg6 7.Bg2 Nbd7 8.f3 e5-/+ 9.h4 h6 10.Nh3 Bd6 11.b5 ed4 12.cd4 Bg3 13.Kf1 Qb6 14.h5 Bh7 15.Nc3 0-0 16.Ba3 Rfe8 17.Nf2 c5 18.dc5 Nc5 19.Nd5?? Nd5-+ 20.Qd5 Na4 21.Nd3 Nc3 22.Qc5 Qc5 23.Bc5 Ne2 24.Rh3?? Bc7 25.Nf2 Nf4 26.Rh1 b6 27.Bd4 Red8 28.Be3 Rd5 29.Ne4? Rb5-+ 30.Rc1 Be5 31.Bf4 Bf4 32.Rd1 a5 33.Nc3 Rc5 34.Ne2 Bc7 35.f4 Re8 36.Bf3 a4 37.Kf2 b5 38.Ra1 Bb6 39.Kg3 Bc7 40.Rhc1?? Rc1-+ 41.Rc1 Ba5 42.Nd4 b4 43.Nc6 Bb6 44.Nb4 g5?? 45.fg5 hg5 46.Bd5? Be3 47.Rf1 Bf4-/+ 48.Rf4 gf4 49.Kf4 a3 50.g5 Bb1 51.g6 Kg7 52.gf7 Rb8 53.Nc6 Rh8 54.Kg5? a2 55.Ba2 Ba2 56.Ne5 Bf7 57.Nf7 Kf7 58.Kg4 Kf6 59.Kh4 Kf5 60.Kg3 Rh5 61.Kf3 Rh3 62.Ke2 Ke4 63.Kd2 Re3 64.Kc2 ½–½. aplws – bratek55 (1640), kurnik, 2011.

4.e3 b5 5.Bd3 Nbd7 (5...a5 6.Nf3=) 6.Nf3 Nb6 7.0-0 Bg4 8.Nbd2 e6 9.h3 Bh5 10.Bb2 Bd6 11.Qc2 Bg6 12.Ne5 Qc7 13.f4 0-0 14.g4 Bd3-/+ 15.Qd3 Nc4 16.Ndc4 bc4 17.Qe2 Be5 18.fe5 Ne4 19.Qf3? f6 20.Rf2?? fe5-+ 21.Qf8 Rf8 22.Rf8 Kf8 23.a4 ed4 24.ed4 Qg3 (24...Qg3 25.Kf1 Qf2#) 0–1. aplws – bratek55, kurnik, 2011.

4.e3 Bf5 5.Ne2+=.

4.Nf3 Bf5 5.e3 e6 6.Bd3 Bd3 7.Qd3 a6 (7...Bd6 8.Nbd2=+) 8.Nbd2 Nbd7 9.0-0 Bd6 10.e4 Ne4 11.Ne4 de4 12.Qe4 Nf6 13.Qe2 h6 14.a3 0-0 15.Bb2 (15.c4 a5 16.Bd2 Bc7=) 15...b5 16.c4 Rc8 (16...a5 17.Bc3=) 17.Ne5 Be5 (17...a5!?=) 18.de5+= Nd7 19.Rfd1 Qe7 20.Rac1 Nb6 21.c5 (21.Bd4!? Nc4 22.Bc5+/-) 21...Nc4= 22.a4 Rfd8 23.Rd6 (23.Bc3!?=) 23...Nd6-/+ 24.cd6 (24.ed6 Qh4 25.Bc3=+) 24...Qd7 (24...Qh4 25.Qd2-/+) 25.Bd4 (25.a5!?=) 25...ba4=+ 26.Qa6 (26.Bb6 Rf8 27.Qc2-/+) 26...Rb8 (better 26...Ra8!? 27.Qc4 Qb7-/+) 27.Qa4= Rdc8 28.h3 Rb5 (28...f6 29.Rc4 fe5 30.Be5=) 29.Bc5 Qb7 (29...Rf8 30.Ra1=) 30.Ra1+= f6? (30...Qd7 31.Qd1+=) 31.f4 (31.Qb3 Kh7+-) 31...Kf7 (better 31...Qf7+=) 32.Qd1+- Ra8 33.Ra8 Qa8 34.Qh5 (34.d7 Rb8 35.Qh5 Kg8 36.ef6 Qa1 37.Kh2 Qf6 38.Qe8 Re8 39.de8Q Kh7+-) 34...Kg8 (34...g6 35.Qh6 Qg8+-) 35.ef6 (better 35.d7 Kh7 36.Qd1+-) 35...Qa1= 36.Kh2 Qf6 37.Qf3 (37.Qe8 Kh7+=) 37...Rb8 38.Qc6 Qf4 Exerts pressure on the isolated pawn 39.g3 (39.Kh1 Qf1 40.Kh2 Rd8=) 39...Qd2 40.Qg2 Qg2 (40...Qd3 41.Qa2 Re8 42.g4=+) 41.Kg2 Kf7 42.Kf3 Ke8 (42...e5 43.Ke3-/+) 43.Ke4 Kd7 44.Kd4 (44.h4 Rf8=+) 44...Rf8 45.b5 (45.Ke3 g5 46.Ke2 h5-+) 45...Rf3 46.b6 Rg3?? (better 46...g6-/+) 47.Kc4+/- Rg2?? (better 47...Kc6 48.d7! Kd7+/-) 48.b7+- Rc2 49.Kb5 Rb2 50.Bb4 (50.Bb4 Rb4 51.Kb4 Kd6 52.b8Q Ke7 53.Qg8+-) 1-0. banjoband (2020) - inzeitnot (2045), Rated Blitz game, lichess.org, 2014. (=1.d4 d5 2.c3 Nf6 3.b4)

4.Na3 e6 5.Nb5 c6 6.Na3 a5 7.b5 Ne4 8.c4?? (better is 8.bc6 bc6 9.Nb1-/+) 8...Bb4-+ 9.Bd2 Qh4 (9...Qh4 10.g3 Nd2-+) 0–1. kong – michaelbuss, ChessWorld.net, 2005.

4.Na3 e6 5.Bf4 a5 6.Qa4 c6+=.

4.Na3 e6 5.Bg5 Be7 (5...a5 6.Bf6 Qf6 7.Nb5-/+) 6.f3 (6.e3 a5 7.ba5 Ra5+=) 6...0-0 (6...a5 7.ba5 Ra5 8.Nc2-/+) 7.Bf6 (7.Nc2 a5-/+) 7...Bf6 (7...gf6?! 8.g4 Bg6 9.h4=) 8.Nc2 a5 9.g4 (9.e3 ab4 10.cb4 Bc2 11.Qc2 Bh4 12.g3 Be7+=) 9...Bg6 (better is 9...Bc2 10.Qc2 ab4-+) 10.Na3? (better is 10.e3-/+) 10...ab4-+ 11.cb4 Ra3 12.h3 h6 13.Qc1 Bd4 14.Qa3 Ba1 15.Qa8 Bc3 16.Kd1 Bb4 17.Qb7-+ Bd6 18.h4 Qd7 19.Qb3 Qc6 20.e4 de4 21.Bb5 Qd5 22.Kc2 ef3 23.Bd3 Qc6 24.Kb2 Be5 25.Ka3 Qc5 26.Ka4 Nc6 27.Bg6 Qa5 (27...Ra8) 0–1. dmoulton (1740) – ruymoultor (1920), net–chess.com, 2005.

4.Nf3 Bb1 5.Rb1= e6 6.e3 Nbd7 7.Bd3 Bd6 8.c4 dc4 9.Bc4 0-0 10.g3 Qe7 11.a3 Nb6 12.Bd3 a5 13.e4 ab4 14.e5 ba3 15.ef6 Bb4 16.Kf1 gf6 17.Bh6 Rfc8 18.Ne5 f5 19.Qh5 a2-/+ 20.Ra1 Bc3 21.Kg2? Bd4-+ 22.Rhe1 Ba1 23.Ra1 c5 24.Bb5 c4 25.Bd2? Qf6 26.f4? Rc5 27.Be8 Re8 28.Ra2 c3 29.Rc2 Na4 30.Be3 Rc7 31.Ra2 b5 32.Qe2 Rb8 33.Bd4 Rd8 34.Qb5 Rd4 35.Qe8 Kg7 36.Ra4 Rd2 37.Kf3 c2 38.Rc4 Rc4 39.Nc4 Qc3 40.Ne3 c1Q (40...c1Q 41.Qf8 Kf8 42.g4 Qe3 43.Ke3 Qc3) 0–1. wesolyPolak (1830) – Soberman (1770), GameColony.com, 2002.

4.Nf3 b6 5.Nbd2 e6 6.Nh4 Bg6 7.Ng6 hg6 8.Qc2 c5 9.bc5 bc5 10.Rb1 Nbd7 11.e3 c4 12.e4+= Bd6 13.e5+– Ne5 14.de5 Be5 15.Nf3 Bd6 16.Be2 0-0 17.0-0 Qc7 18.Bg5 Ng4 19.h3 Nh6 20.Rfe1 f6?? 21.Bh6 gh6 22.Qg6 Qg7 23.Qg7 Kg7 24.Nd4 a6 25.Ne6 (25.Ne6 Kg6 26.Nf8 Rf8 27.Bf3+–) 1–0. Trkn – guest2541, ICC, 2004.

4.Nf3 Nc6 5.a4 (5.Qa4 Nd7=) 5...Bb1 (5...e6!?+=) 6.Rb1= Ne4 7.a5?? Nc3-+ 8.Qc2 Nb1 9.Qb1 e6 (9...e5 10.Ne5 Bb4 11.Kd1 Ne5 12.Qb4-+) 10.b5 (10.Bd2 Bd6-+) 10...Na5 11.b6 ab6 12.e3 Nc4 13.Bd3 Ba3 14.Ba3 Ra3 15.Qb5 c6 16.Qb1 Qa8 17.0-0 Ra5 18.Qd1 Nb2 19.Qd2 Nd3 20.Qd3 Ra1 21.Ne5 Rf1 22.Qf1 f6 23.Ng4 h5 24.Nf6 gf6 25.g3 h4 26.Qg2 h3 27.Qf3 Qa1 (27...Qa1 28.Qd1 Qd1) 0–1. soonermagic – mberlin, net–chess.com, 2005.

4.Nf3 e6 5.g3 Be7 (5...a5 6.b5=+) 6.Bg2 (6.Nbd2 0-0=+) 6...0-0 7.Nh4 Bg4 (7...Be4 8.0-0-/+) 8.h3 Bh5 9.Nf3 (9.Nd2 Ne8=+) 9...Nbd7 (9...a5 10.b5-/+) 10.0-0 c6 11.Nbd2 a5 12.ba5 Ra5 13.Nb3 (13.a4 Qc7=+) 13...Ra7 14.Bg5 (14.Ne5 Ne5 15.de5 Nd7-/+) 14...h6 15.Bf6 (15.Bf4 Ne4-/+) 15...Bf6 (15...gf6?! 16.Nc1=+) 16.Qc1 (16.a4 Qc7-+) 16...Qa8 (16...Qb6 17.Qd2-+) 17.Qb2-/+ Ra3 18.Rfe1 Qa7 19.e4 Ra8 20.Nc1 (20.ed5 cd5 21.Nbd2 Rc8-/+) 20...b5 (20...Bf3 21.Bf3 Rc3 22.Qc3 Bd4 23.Qc2 Ba1 24.ed5 cd5 25.Qc7-+) 21.e5 (21.ed5 cd5 22.Ne5 Be5 23.de5 Qc7-+) 21...Be7 22.Nd2 (22.Nd3 Nb6 23.Rec1 Bg6-+) 22...Nb6 23.Nb1 (23.Ncb3 Ra2 24.Ra2 Qa2-+) 23...Nc4 24.Qc2 Ra6 (24...Bg6 25.Qe2 Ra4 26.Rd1-+) 25.f4 (25.Bf1-+) 25...Bg6 26.Qf2 b4 27.g4 White intends f5 (27.cb4 Bb4 28.Rd1 c5-+) 27...Bb1 28.Rb1 bc3 29.f5 (29.Rb3 Ra3 30.Ra3 Qa3-+) 29...Bg5 30.Bf1 (30.Re2 c2! 31.Rb3 Ra2 32.Rc2 Bc1 33.Ra2 Qa2 34.Qa2 Ra2-+) 30...Bc1 (better 30...Nd2 31.fe6 fe6 32.Ba6-+) 31.Bc4 dc4 32.Rbc1 Ra2 33.Qe3 Rd2 (33...Rd8 34.Rc3 Rd4 35.fe6 fe6 36.Kh1-+) 34.Rc3 Qd4 (34...Rd4 35.fe6 fe6 36.Rec1-+) 35.Qd4 Rd4 36.fe6 fe6 37.Re2 (37.Rec1 Ra4-+) 37...Rb8 (37...Ra5 38.Kf2-+) 38.Rec2 Re4?? (38...Rb4 39.Kf2-+) 39.Kg2? (39.Rc4 Rc4 40.Rc4 Rc8=+) 39...Kf7?? (39...Rb4 40.Rd2 Re5 41.Rd6-+) 40.Ra3? (40.Rc4!? Rc4 41.Rc4=+) 40...Rb3 (40...Rb5!? 41.Ra7 Kg6 42.Rc7-+) 41.Ra7 (41.Ra6 Re5 42.Rc6 Ree3 43.R2c4 g5-+ (43...Rh3?! 44.Rf4 Ke7 45.Re4=+)) 41...Kg6 42.Re7? (better 42.Ra4-/+) 42...c3?? (better 42...Re5 43.Rc4 Kf6-+) 43.Rf2?? (43.Re6 Kf7 44.Rc6 Re3=) 43...Rb2 (better 43...Re5 44.Rd7 Rc5-+) 44.Re6= Kg5 45.Rc6 Re3 46.Rb2 cb2 47.Rb6 Re5 48.Rb2 Ra5 49.Rb7 g6 50.Rb6 h5 51.gh5 Kh5 52.Rb8 Ra3 53.Rh8 Kg5 54.Kf2 ½–½. Gagarkine,Nikolay (1770) – Komarov,Jury (1915), Saratov Russia, Regional Championship, 2015. (=1.d4 Nf6 2.b4 d5 3.c3 Bf5)

4.Nf3 e6 5.Bg5 Be7 6.h3 0-0 7.e3 Nbd7 8.Bd3 Bd3 9.Qd3 a5 10.Bf6 Nf6 (< 10...gf6 11.b5+=) 11.Nbd2 (better is 11.b5!?=+) 11...ab4-/+ 12.cb4 Bb4 13.0-0 Ra3 14.Qb5 Bd2 15.Nd2 Qa8 16.Qc5 c6 17.Qc2 Qa6 18.Nf3 Ra8 19.g4 (19.Rfb1!?-/+) 19...Ra2-+ 20.Ra2 Qa2 21.Qd3 Ra3 22.Qb1 Qb1 23.Rb1 b5 24.Nd2 Ne4 25.Nb3 Ra2 26.Nc1? Rf2 27.Nd3 Rd2 28.Ne5 Rc2 29.Ra1 Kf8 30.Ra8 Ke7 31.Nc6?? Rc6 32.h4 h6 33.Ra7 Kf6 34.g5 hg5 35.hg5 Ng5 36.Ra5 Rb6 (37.Ra3 Ne4-+) 0–1. pinski – shirehorse, ChessWorld.net, 2005.

4.Nf3 h6 5.Bf4 e6 6.Qa4 Nbd7 7.Ne5 Bd6 8.Qb5 Qc8 9.Nd7 Nd7 10.Bd6 cd6 11.Kd2 a6 12.Qa4 0-0 13.Kc1? (better is 13.e3-/+) 13...Bb1-+ 14.Kb1 (14.Rb1 Qc3 15.Kd1 Qd4 16.Ke1 Qc3 17.Kd1 Nf6-+) 14...Qc3 15.a3 Rac8 (better is 15...Qe1!? 16.Kb2 Qd2 17.Qc2 Qd4 18.Qc3 Qf2 19.Rd1-+) 16.Qd1 Nb6 17.e3 Nc4 (better is 17...Na4! 18.Ra2-+) 18.Bc4 Rc4 (18...dc4?! 19.Qc2 Qb3 20.Qb3 cb3 21.Kb2 Rc2 22.Kb3-+) 19.Rg1 (19.Ka2 Qc2 20.Qc2 Rc2 21.Kb1 Rf2-+) 19...Rfc8 20.Ra2 f5 21.Qd2?! (21.h4-+) 21...Qb3 22.Rb2 Qa3 23.h4 R8c6 24.b5 ab5 25.Rb5 (25.Ra2 Rb4 26.Ka1-+) 25...Ra6 (25...Ra6 26.Qc3 Qc3 27.Ra5 Qb3 28.Ka1 Ra5) 0–1. chessnaif (2415) – mpenga (2585), net–chess.com, 2016.

4.Bf4 e6 5.Nf3 Bd6 6.Bd6 cd6 7.e3 0-0 8.Bd3 Be4 9.0-0 Qc7 10.Qd2 (10.Ng5 Bd3 11.Qd3 Rc8+=) 10...Rc8 11.a4 a5 12.Ra3 Nbd7 13.b5 Nb6 14.Rd1 Qe7 15.Ra2 Nc4 16.Qc2 Bd3 17.Qd3 Ne4 18.Ne1 Rc7-/+ 19.f3 Nf6 20.Nd2 Rac8 21.Nc4 Rc4 22.Ra3 Nd7 23.f4 Nb6 24.Qc2 R4c7 25.Qd3 e5 26.de5 de5 27.Rda1 ef4 28.ef4 Rc4 29.Qg3 Qc5 30.Qf2 Qf2 31.Kf2 Rf4 32.Nf3 Kf8 33.Ke2 Rg4 34.Kf2 Rgc4 35.h3 Rc3 36.Rc3 Rc3 37.Nd4 g6 38.h4 h5 39.g3 Ke7 40.Kg2 Kd6 41.Rf1 Kc5 42.Rf6 Na4 43.Nf3 Kb5 44.Rf7 Nc5 45.Rc7 a4 46.Nd4 Kb4 47.Ne6 Ne6 48.Rb7 Kc4 49.Rb6 Nc5 50.Rg6 a3 51.Rg7 d4 (51...d4 52.Ra7 Kb3-+). 0–1, Jonsson,Gudbrandur – Woelfelschneider,Peter, TT–11 ETC, 2003.

4.h3 e6 5.Nf3 Nbd7 6.Bf4 b6 (6...Bd6 7.Bd6 cd6 8.e3+=) 7.e3 Bd6 8.Bd6 cd6 9.Bd3 Bd3 10.Qd3 Ne4 (10...e5 11.Qf5 Qc7 12.0-0+=) 11.Nbd2 Ndf6 12.0-0 Rc8 13.Qc2 Nc3-/+ 14.Qd3 Nfe4 15.Rfc1 Rc7 16.Ne4 Ne4 17.Nd2 Nd2 18.Qd2 Kd7 19.Rc7 Qc7 20.Rc1 Qb7 21.a4 Rc8+= 22.b5 Rc4 23.Rc4 dc4 24.Qc3 d5-/+ 25.f3 Qc7 26.e4 f6 27.e5 fe5-+ 28.de5 Qc5 29.Kh2? d4 30.Qe1 c3 31.Qe4 c2 32.Qb7 Qc7 33.Qc7 Kc7 (33...Kc7 34.g3 d3-+) 0–1. amayfer (1830) – mippus (2215), net–chess.com, 2010.

4.a4 a6 5.a5 Bg7 6.Nf3 0-0 7.Nbd2 Bf5 8.h3 Nbd7 9.g4 Be6 10.g5 Nh5 11.Rg1 b6 12.Nb3 Bf5 13.e3 Re8 14.Nh4 e6 15.Nf5 ef5 16.Qf3 Nf8 17.b5 Qd6 18.Ba3 Qd7 19.ba6 Qc6 20.c4 b5? 21.Qd5 Qd5 22.cd5 Red8 23.Bb5 Rab8 24.Bc6 Rb3 25.a7 (25.a7 f4 26.Kd2+–) 1–0. marekt – Oxford, ICC, 2003.

4.a4 a6 5.Bf4 Nh5 6.Bd2 Bg7 7.Nf3 Nc6 8.Na3 Bg4 9.b5 Na5 10.Ne5 Be5 11.de5 Be6 12.Bh6 Qd7 13.e3 Rg8 14.Be2 Ng7 15.ba6 ba6 16.Bg7 Rg7 17.0-0 Kf8 18.Rb1 Kg8 19.Qd4 Kh8 20.Bf3 Rgg8 21.c4 Nc6 22.Qf4 dc4 23.Rfd1 Qc8 24.Bc6 (24.Bc6 Rb8 25.Nc4+–) 1–0. marekt – Oxford, ICC, 2003.

4.e3 Bg7 5.f4 (5.Nf3 Bf5=) 5...Ne4 6.Bd3 Nd7 7.Be4 de4 8.g4 (8.Ne2 Nf6=) 8...e6 9.g5 Nb6 (9...h6 10.Nh3+=) 10.h4 (10.Nd2 e5=) 10...f5 11.a4 Nc4 (11...h6 12.Nh3+=) 12.Na3 Nb6 13.a5 Nd5 14.Qd2 Bd7 (14...h6 15.Nh3=) 15.Nh3 a6 16.0-0 (16.c4 Ne7=) 16...c6 (16...Qe7!?-/+) 17.Nc4= h5 (better is 17...Qc7=) 18.Nd6+– Ke7 19.Nb7 Qc7 20.Nc5 Kf7 21.c4 Ne7 22.Na4 Rad8 23.c5 (23.Bb2 Rhf8+–) 23...e5? (23...Rb8 24.Nb6+=) 24.Bb2?? (better is 24.fe5!? Rhf8 25.Nf4+–) 24...ef4 (24...ed4 25.Bd4 Be6 26.Nb6=) 25.ef4 (better is 25.Nf4 Nd5 26.Nb6+/–) 25...Nd5 26.Qe1 Rhe8 Black intends e3 27.Rf2 e3 (27...Be6 28.Nb6+=) 28.Rf3= e2 29.Nc3?? (better is 29.Nb6=) 29...Bd4-+ 30.Kg2 Nb4 31.Rb1 (31.Ne2 Bb2 32.Rb1-+) 31...Nc2 32.Qc1 e1Q 33.Qc2 Qh4 34.Ne2 Bb2 (better is 34...Qg4!? 35.Ng3 Be6 36.Bd4-+) 35.Rb2 Qe1 36.Rf1 Qe2! 37.Qe2 Re2 38.Re2 Qa5 39.Re5 (39.Nf2 Be6 40.Rfe1 Bd5 41.Kg3 Kf8-+) 39...Be6 40.Rfe1 Qd2 (40...Bd5 41.Kf2-+) 41.R5e2 Qd5 42.Kg3 (42.Kh2 Qf3 43.Rf2 Qc3-+) 42...a5 (42...h4!? 43.Kf2 Qc5 44.Kg2 Bd5 45.Kh2-+) 43.Re5 (43.Re6 Qe6 44.Re6 Rd3 45.Kf2 Ke6 46.Ng1-+) 43...h4 44.Kh4 (44.Kf2 Qd4 45.R5e3-+) 44...Qf3 45.Rg1 (45.Rf5 Bf5 46.Re7 Ke7 47.Nf2 Qf2) 45...Rh8 0–1. ashipham (1870) – budgie (2270), net–chess.com, 2014. (=1.d4 d5 2.c3 Nf6 3.b4 g6)

4.Nf3 Bg7 5.e3 0-0 6.Bd3 Nfd7 7.0-0 e5 8.de5 Ne5 9.Ne5 Be5 10.f4 Bg7 11.f5 (11.e4 Nc6 12.e5 f6=) 11...Nd7 (11...Nc6 12.b5 Ne5 13.Ba3=+) 12.b5 (12.e4 a5 13.b5 Ne5=) 12...Nc5 (12...Re8 13.fg6 hg6 14.Bc2=+) 13.fg6 (13.Ba3 Qd6=) 13...hg6 (13...fg6!? 14.Rf8 Bf8-/+) 14.Ba3= b6 15.Bc5 bc5 16.Qf3 Bb7 Black prepares d4 17.e4 (17.a4 Qg5 18.Ra2 Rae8=+) 17...d4 (17...c4 18.Be2=+) 18.Bc4 (18.Na3 Qh4 19.g3 Qe7=+) 18...Qe7 19.Bd5 (19.Na3 Rae8=+ (worse 19...Qe4 20.Bf7 Rf7 21.Qf7 Kh8 22.Rf3+/-; 19...Be4?! 20.Rae1 Rae8 21.Qg4=+)) 19...Bd5=+ 20.ed5 Rad8 21.g4 (21.a4!?=+) 21...Qd6 22.a4 (22.c4 d3! 23.Nd2 Bd4 24.Kg2 Ba1 25.Ra1 Rfe8-/+) 22...Qd5-+ 23.Qd5 Rd5 24.Ra2 d3 25.Raf2 c4 26.Rf4 Rc5 27.Nd2 (27.Na3 Rd8 28.Rc4 Rc4 29.Nc4 Bc3-+) 27...Bc3 (27...Bh6 28.h4 Bf4 29.Rf4-+) 28.Nc4 c6 29.bc6 Rc6 30.Ne3 d2 31.Nd5 (31.g5-+) 31...Kg7?? (31...Re8 32.Rd1 g5 33.Rff1-+) 32.Rd1?? (better 32.Nc3!? Rc3 33.Rd4=+) 32...Rd8 (better 32...Ba5!? 33.Rff1 Rd8-+) 33.Nc3 Rc3 34.Kf2 (better 34.Kf1-+) 34...Rh3 35.Kg1 Ra3 (35...Rh4 36.a5-+) 36.Re4 (36.g5 Rh3-+) 36...Rd7 (36...Kh6 37.Kg2-+) 37.Kf2 (37.h4 Kh6 38.Kg2 Rc3-+) 37...Rh3 38.Kg2 Rc3 39.Re2 Rc4 40.h3 Rcd4 41.Kf3 a5 42.h4 (42.Re4 f5 43.Rd4 Rd4 44.gf5 gf5-+) 42...Rd3 (42...Rb7 43.Re4 Rb3 44.Kf4-+) 43.Re3 R7d4 44.Rd3 Rd3 45.Ke2 (better 45.Ke4!? Ra3 46.Rd2 Ra4 47.Kf3-/+) 45...Rd4 46.Kf3 Kf6 47.Ke3 (47.g5 Ke5-+) 47...Rg4 48.Rd2 Ra4 49.Rh2 Kf5 (49...Ke5 50.Kd3-+) 50.h5 gh5 51.Rh5 Ke6 (51...Kg4 52.Rh8-+) 52.Kf3 f5 53.Rh6 (53.Rh8 Rb4-+) 53...Ke5 54.Rb6 Ra3 55.Ke2 Kf4 56.Rf6 Kg5 (56...Re3 57.Kf2 a4 58.Ra6 Rf3 59.Ke2-+) 57.Rb6 a4 58.Rb4 f4 59.Kf2 (59.Rb8 f3 60.Kf2 Rd3-+) 59...Kg4 60.Re4 (60.Rb8 Ra2 61.Ke1 a3-+) 60...Ra2 61.Kf1 (61.Ke1-+) 61...Kf3 62.Rc4 (62.Re1-+) 62...Ra1 63.Rc1 Rc1 0-1. NinJaWarrior (2040) - XPJ_v134 (2125), Rated Blitz game, lichess.org, 2015.

4.a3 ed4 5.Nb5 c5 6.Bf4 Na6 7.Nf3 Bd7 8.Nd6 Bd6 9.Bd6 Ne4 10.Be5 f6 11.Bg3 Bb5 12.bc5 Qa5 13.Nd2 Nac5 14.f3 Ng3 15.hg3 Qc3 16.Rh5 0-0 17.Rd5 Ba4 18.Kf2?? Bc2 19.Qe1 Qe3# 0–1. Garyman – michaelbuss, ChessWorld.net, 2005.

4.a3 ed4 5.Qd4 c5 6.bc5 Nc6 7.Qa4 (7.Qd3 Bc5 8.e3 d4-/+) 7...Bc5 8.e3 d4 9.Nce2 (9.Bb5!? Bd7 10.ed4 Nd4 11.Bd7 Qd7 12.Qd7 Kd7 13.Ra2-/+) 9...0-0 10.c4 (10.Nf3!? Re8 11.Qc4-+ (11.Nfd4? Nd4 12.Qc4 Qb6-+)) 10...Ne4 11.Nf4? (11.Nf3-+) 11...de3 12.fe3 Qf6 13.Ra2 Qc3 14.Bd2 Nd2 15.Rd2 Qe3 16.Nge2 Qf2 17.Kd1 Be3 18.Nd3 Qf6 19.Rb2 Bf5 20.Qb3 Bd3 21.Ra2 Rad8 22.a4 Be2 23.Ke1 Qf2# 0–1. Wloka,Frank – Pupke,Peter (2285), BdF OS–011 remoteschach.de, 2004.

4.a3 ed4 5.Qd4 Nc6 6.Qd1 d4 7.Na4 b5 8.Nb2 a5 9.ba5 (better is 9.e3!? Qd5 10.Qf3=+) 9...Ra5-+ 10.Nd3 b4 11.a4 Bd6 12.h3 (12.Bb2!?-/+) 12...Ne4-+ 13.Bb2? (better is 13.e3-+) 13...Ng3! 14.Rh2 Nf1 15.Kf1 Bh2 16.Nf3 Bd6 17.Nd4 Nd4 18.Bd4 Qh4 19.e3 0-0 20.Qe1 Re8 21.Nb4 Bh3! 22.gh3 Qh3 23.Ke2 Qh5 24.Kd3 Bb4 25.Qb4 c5 26.Bc5 Rc5 27.Kd2 Rd5 28.Kc1 Rd1 29.Kb2 Qe5 30.c3 Rb8 31.Rd1 Rb4 32.Kc2 Qe4 33.Rd3 Ra4 (33...Ra4 34.Kb3 Qc4 35.Kc2 Ra2 36.Kb1 Qb3 37.Kc1 Qc2#) 0–1. PawnPower – RodeLoper (1655), internet, 2007.

4.a3 ed4 5.Qd4 Nc6 6.Qd3 a6 7.e3 Be7 8.Be2 0-0 9.Nf3 g6 10.Nd4 Nd4 11.Qd4 Bf5 12.Bd3 Bd3 13.cd3 c6 14.0-0 Nd7 15.Bd2 Bf6 16.Qg4 Ne5 17.Qe2 Bg7 18.d4 Nc4 19.Bc1 b6 ½–½. capacuba (2320) – jboger (2125), net–chess.com, 2011.

4.e4? Bb4-+ 5.Qd2?? (5.Bd2 Bc3 6.Bc3 Ne4 7.Qf3 ed4 8.Bd4-+) 5...Ne4 6.Qd3 (6.Ne4 Bd2 7.Nd2 ed4 8.Ngf3-+) 6...Bc3 7.Qc3 Nc3 8.Bg5 Qg5 9.Nf3 Qf4 10.a4 e4 (better 10...Bf5 11.Be2 Qe4 12.Ng1-+) 11.Bb5 Nb5 12.ab5 ef3 13.gf3 Qf3 14.Kf1 Qh1 (14...Bh3 15.Ke1 Qh1 16.Kd2 Qa1 17.f3 Qd4 18.Kc1 a5 19.b6 Qf4 20.Kd1 Qf3 21.Kc1 Qa3 22.Kd2 d4 23.c4 Qc3 24.Ke2 Qe3 25.Kd1 d3 26.bc7 Bg4) 15.Ke2 Qa1 16.c3 Qc3 (16...Kd8 17.h3 Re8 18.Kf3 Qc3 19.Kf4 Qh3 20.f3 Qh4) 17.f3 (17.h3 0-0 18.f4 Re8 19.Kf2 Qe1 20.Kf3 Bh3 21.f5 Qe3) 17...Qd4 (17...Kd8 18.f4 Re8 19.Kf2 Bh3 20.f5 Qe3) 18.f4 0-0 (18...Bg4 19.Kf1 Qe3 20.Kg2 Bh3 21.Kh1 Qe1) 19.h3 (19.Kf3 Qd3 20.Kf2 Re8 21.Kg1 Re2 22.f5 Qd1) 19...Re8 20.Kf3 Re3 21.Kg2 Qd2 22.Kf1 Re1 0-1. 18561923 - Berezkin (2205), Rated Blitz tournament, lichess.org, 2014. (=1.d4 d5 2.Nc3 Nf6 3.b4)

4.de5 Bb4 5.Bd2 Bc3 6.Bc3 Ne4 7.Qd3 0-0 8.0-0-0?? Nf2-+ 9.Qd5 Qd5 10.Rd5 Nh1 11.Bd4 Nc6 12.Be3 Be6 13.Rb5 a6 14.Rb7 Rfb8 15.Rc7 Nb4 16.Bd4 Na2 (16...Na2 17.Kd2 Rb1-+) 0–1. Aannevik,Bjarne – Vegjeleki,Adolf (2310), corr ICCF WSTT/3/06/1, 2006.

4.a3 a5 5.b5=+.

4.a3 a6 5.Nf3 h6 6.e3 c6 7.Bd3 Bd6 8.0-0 b5 9.Ne5 (9.e4 de4 10.Ne4 Ne4 11.Be4 Bb7+=) 9...Be5 (9...a5 10.ba5 0-0 11.Bb2=) 10.de5+= d4? (better is 10...Nfd7!?+=) 11.ef6 (better is 11.Ne2 Nd5 12.ed4+–) 11...Qf6?? (better is 11...dc3 12.fg7 Rg8+/–) 12.Ne4+– Qd8 13.ed4 f6 (13...0-0 14.c3+–) 14.Qh5 Ke7 15.Nc5 (better is 15.Bf4 Qd7+–) 15...Qd4 16.Be3 Qd5 (16...Qe5 17.Qf3 Kf7 18.Rfe1+–) 17.Qg4 (17.Qg6!? Rg8 18.Na4 Nd7+–) 17...g5 18.Rad1 h5 (18...e5 19.Qe2 Qf7 20.Ne4+–) 19.Qe2 e5 (19...Qa2 20.Bg6 Qc4 21.Qd2+–) 20.Bf5! Qg8 (20...Bf5 21.Qf3 Double attack (21.Rd5 Discovered attack; 21.Qf3 Decoy)) 21.Bc8 Qc8 22.Rd3 Kf7 23.Rfd1 g4 (23...a5 24.Nd7 Qe8 25.Nb8 Rb8 26.Rd7 Kg8 27.ba5+–) 24.Rd6 h4 (24...Qf5 25.Ne6 Rc8 26.Bb6+–) 25.c3 (25.Nd7 f5 26.Rf6 Kg8 27.Rf5 Rh7 28.Qg4 Rg7 29.Nf6 Kf8 30.Bc5 Kf7 31.Nh5 Qf5 32.Qf5 Ke8 33.Ng7) 25...g3 26.h3 f5 (26...a5 27.Nd7 gf2 28.Qf2 Nd7 29.Qf5 Kg7 30.Rd7 Qd7 31.Rd7 Kf8 32.Qf6 Ke8 33.Qe7) 27.Qf3 (27.Qa2 Kg7 28.Ne6 Qe6 29.Qe6 gf2 30.Bf2 Rf8 31.Qh6 Kg8 32.Rg6 Kf7 33.Qg7 Ke8 34.Re6) 27...Ra7 (27...a5 28.Nd7 gf2 29.Bf2 f4 30.Rf6 Ke7 31.Bc5 Kd8 32.Nb8 Kc7 33.Qc6 Kb8 34.Bd6 Ka7 35.Rf7 Qc7 36.Qc7 Ka6 37.Qa5) 28.Ne4 (better is 28.Ne6 gf2 29.Kf2 Qe6 30.Re6 Ke6 31.Ba7+–) 28...Rd7 (28...Re7+–) 29.Qf5 Ke8 30.Nf6 Kf8 (30...Ke7 31.Qe6 Kf8 32.Bh6 Rh6 33.Qg8 Ke7 34.Re6) 1–0. rookbynight – varcany, gameknot.com, 2013. (=1.d4 d5 2.Nc3 Nf6 3.b4 e6)

4.a3 b6 5.Bf4 (5.Nf3 Be7=) 5...Bd6 6.e3 Bf4 7.ef4 0-0 8.Nf3 Nbd7 9.Bb5 c5 10.Bd7 Nd7 11.b5 (11.Ne5 Qh4 12.Ne2 cd4 13.Qd4 Nf6=) 11...Qf6 12.Qd2 cd4 13.Nd4 Bb7 14.Na4 (14.0-0 a6=+) 14...Nc5 15.Nc3 Rac8 16.0-0 Rc7 17.f3 (17.Rfe1 Rfc8=+) 17...Rfc8-/+ 18.Rae1 (18.Rfe1 Nd3 19.Qd3 Rc3-/+) 18...Nd3! 19.cd3?? (19.Qd3 Rc3) 19...Qd4-+ 20.Re3 Rc3 21.Qf2 Rd3 22.Rfe1 Re3 23.Re3 Rc1 24.Re1 Re1 0–1. Kientzler,Roland – Gorzel, corr SOK–89–34, 1989.

4.a3 c6 5.Bg5 h6 6.Bh4 Be7 7.h3 0-0 8.e3 Nbd7 9.Bd3 g5 (9...e5!?=+) 10.Bg3= Re8 11.Nf3 Nf8 (11...a5!?+=) 12.Ne5+- Kg7 13.f4 (better 13.h4+-) 13...Ng6?? (better 13...N6d7+-) 14.Bg6+- fg6 15.Qd3 Ne4 16.Ne4 Bf6 (16...Rf8 17.Ng5 Rf5 18.Ngf3+-) 17.fg5 (better 17.Nf6 Qf6 18.Ng4+-) 17...Bg5 (17...de4 18.gf6 Qf6 19.Qd2+-) 18.Nf2 (18.Nd6 Qf6 19.Ne8 Kf8 20.Nf6 Bd7 21.Qg6 Be8 22.Ne8 Ke7 23.Qf7 Kd8 24.Qd7) 18...Qf6 19.0-0 Qf5 20.e4 Rf8 (20...Qf8 21.Nfg4 de4 22.Qe4 Qf5+-) 21.ef5 (21.ef5 ef5 22.Rae1+-) 1-0. axxle – ctrotter, net-chess.com, 2020. (=1.d4 d5 2.b4 Nf6 3.Nc3 e6)

4.a3 Be7 5.Nf3 0-0 6.e3 c6 7.Be2 Bd7 8.Ne5 Ne8 (8...b5 9.0-0=) 9.Bh5 (9.0-0 a5 10.b5 Nd6=) 9...f6 10.Nf3 (10.Nd7 Nd7 11.0-0 Nd6=) 10...e5 11.de5 fe5 12.Ne5 Bf6 13.Qd4? (13.f4 Be5 14.fe5 Qh4 15.g3=) 13...Nd6?? (better is 13...Be5!? 14.Qe5 Rf5-+) 14.f4 (14.Nd5 cd5 15.Qd5 Kh8 16.Qd6 Be5 17.Qe5 Rf5+=) 14...Be5 (14...Nf5 15.Qd1 Be5 16.fe5 Qh4 17.Kd2 d4-+) 15.Qe5= Nc4 16.Qg5 Qg5 17.fg5 Bf5 18.Ra2 Nd7 19.0-0 g6 (19...Nde5 20.Be2=) 20.Be2+= Rae8 Attacking the isolated pawn on e3 (20...Nde5!?+=) 21.Bc4+/– dc4 22.Ne2 (22.Rf4!?+/–) 22...Ne5 23.Nd4 Bd7 24.Nf3 (24.Rf8 Kf8 25.a4 Nf7+=) 24...Bg4 25.Nd4 Bd7 26.h3 b5 27.Rf8 Rf8 28.Bd2 Kg7 (28...a6 29.Bc3+/–) 29.Ra1 h6 30.gh6 Kh6 31.e4 Kh7 32.Re1 a6 33.Bc3 Rf7 34.Ne2 Re7 35.Ng3 Nf7 36.Bf6 Re6 37.Bc3 Ne5?? (37...Re7 38.Kf2 Kh6+–) 38.Kh2 1–0. rookbynight – cirroco, gameknot.com, 2015. (=1.d4 d5 2.Nc3 Nf6 3.b4 e6)

4.Nf3 Bb4!? 5.Bd2 0-0-/+.

4.Nf3 Nc6 5.a3= a6 6.e3 Be7 7.Bd3 0-0 8.Bd2 Bd6 9.0-0 b5 (9...e5 10.de5 Ne5 11.Ne5 Be5 12.f4=) 10.Ne2 Re8 11.c3 e5 12.de5 Ne5 13.Ne5 Be5 14.Bc2 Bb7 15.f4 Bd6 16.a4 Bc6 17.a5 Bd7 18.Be1 c5 (18...Qe7 19.Bd2-/+) 19.Bh4 (19.e4 Bg4 20.e5 Bf8=) 19...Be7 20.Bf6 Bf6 21.bc5 Qc7 22.Qd2 Qc5-/+ 23.Qe1?? Qe3-+ 24.Rf2 b4! 25.Rb1 bc3 26.Rb3 Ba4 27.Rc3 Bc3 28.Qf1 Bc2 29.Nc3 Qc3 30.Qc1 Re1 31.Qe1 Qe1 32.Rf1 Qe3 33.Kh1 Re8 34.h3 Bd3 35.Rg1 Qf4 36.g3 Be4 37.Kh2 Qf2 38.Rg2 Qg2# 0–1. allknight – gordiemac, ChessWorld.net, 2010.

4.Bg5 Be7 5.Nf3 (5.Rb1 a5 6.ba5 c5+=) 5...Nc6 (better is 5...Bb4!? 6.Qd3 c5 7.dc5 Nbd7-/+) 6.b5 (6.a3 h6 7.Bf6 Bf6=) 6...Nb8 (6...Na5 7.Bf6 Bf6 8.e4=) 7.a4 (7.Bf6 Bf6 8.e4 Be7=) 7...0-0 (7...Nbd7 8.Qd3+=) 8.h4 (8.Qd3 h6 9.Bf6 Bf6=) 8...Bd7 (8...a6 9.Bf6 Bf6 10.e4+=) 9.h5 (9.Qd3 a6+=) 9...h6 (9...Bb4 10.Bd2+=) 10.Bf6 Bf6 11.Ne5 (11.e4 c5 12.ed5 cd4+=) 11...Be5 (11...c5 12.e3-/+) 12.de5 f5 (better is 12...c5!?-/+) 13.Nd5 ed5 14.Qd5 Rf7?? (better is 14...Kh7 15.Qb7 Be6+=) 15.Qb7 (better is 15.e6 Re7 16.Qb7 Be6 17.Qa8=) 15...Qg5?? (better is 15...Bc8 16.Qa8 Qd4+=) 16.Qa8+– Rf8 (16...Qd8 17.e3 Be6 18.Qa7+–) 17.Qa7 c6 18.e3 (better is 18.Qd4 cb5 19.ab5+–) 18...g6 (18...Be6+–) 19.Bc4 Kh8 20.0-0-0 (20.Qd4 Kh7 21.e6 c5 22.Qc5 Qf6+–) 20...gh5 (20...Qe7 21.e6 cb5 22.Qd4 Rf6 23.ed7 Nd7 24.ab5+–) 21.Rd7 (21.e6!? Be6 22.Be6 cb5 23.ab5 f4+–) 21...Nd7 22.Qd7 Qg2 (22...cb5 23.ab5 Ra8 24.g3+–) 23.Rf1 (23.Qd6!? Qg7 24.b6 Re8+–) 23...f4 (23...cb5 24.Qe7 Ra8 25.Qf6 Qg7 26.ab5+–) 24.Qc6 (better is 24.e6!? Qg6 25.e7 Re8+–) 24...fe3 (24...Qg5+–) 25.Qh6 1–0. hsatcher – echuck215, gameknot.com, 2014. (=1.d4 Nf6 2.Nc3 d5 3.b4 e6)

4.Bg5 Be7 5.Bf6 Bf6 6.e3=+ a6 7.f4 b5 8.a4 Bd7 9.ab5+= c6 10.bc6 Bc6 11.Nce2 Bb5 12.Nc3 Bf1= 13.Kf1 a5 14.Nf3+= Nc6 15.Nb5 Nb4=+ 16.Ra3 Qb6 17.Qe2 0-0 18.Nc3 Rfc8 19.Qd2 Rc7 20.Kf2=+ Rac8 21.Rha1 h6 22.Ra5?? Nc6?? 23.Ra6?? Qb8+= 24.Rb1 Qa8?? 25.Ra8+– Ra8 26.Nb5 Rb7 27.Qd3 Nb4 28.Rb4 Be7 29.Rb3 Ra4 30.Ne5 f6 31.Ng4 f5 32.Ne5 Kh7 33.Nc3 Rb3 34.g4 Rc4 35.Nc4 dc4 36.Qc4 Rb1 37.Nb1 1–0. dunk0104 – marysson, ChessWorld.net, 2010.

4.Bf4 Nc6 5.a3 e6 6.e3 Bd6 (6...Nb4 7.ab4 Bb4 8.Nge2=) 7.Bd6= Qd6 8.Nf3 Rd8 9.Nb5 Qe7 10.Na7? (better is 10.Bd3=) 10...Na7-+ 11.Bd3 Nc6 12.b5 Na5 13.a4 Qb4 14.Nd2 Ne4 15.0-0?? (15.Be4 Be4 16.0-0-+) 15...Nd2 16.Re1 Be4 17.Be4 Ne4 18.Qg4 0-0 19.Reb1 Qd2 20.Qf4 Qc2 (better is 20...Nc3!? 21.Re1 Qc2 22.Kh1-+) 21.Rc1 Qb2 (21...Qb2 22.Rcb1 Qe2-+) 0–1. Da Silva Jr,Olair R – Dos Santos,Fernando M, TBI–C–XI–XII–P–0013, 1993. (=1.d4 d5 2.Nc3 Nf6 3.b4)

4.Bf4 e5 5.de5 Bb4 6.Bd2 Bc3 7.Bc3-/+.

4.Bf4 e5 5.Be5 Bb4 6.Qd2 Ne4 7.Qf4 Bc3 8.Kd1 Qg5 9.Qg5 Ng5 10.Bg7 Rg8 11.Bf6 (11.Rb1 Ne4 12.Kc1 Nf2-+) 11...Ba1 12.h4 (12.Bg5 Rg5 13.e3-+) 12...Ne4 13.f3 Nf2 (13...Nf2 14.Kd2 Nh1-+) 0–1. donny38 – pierre (2150), internet, 2007.

4.Bg5 e6 5.e3 Bb4 6.Bf6 Bc3 7.Qd2 Bd2 8.Kd2 Qf6 9.Nf3 Nd7 10.Bb5 c6 11.Be2 e5 12.Rab1 0-0 13.h3 ed4 14.Nd4 Bc2! 15.Kc2 Qf2 16.Kd2 Nc5 17.Rbf1 Ne4 18.Kd3 Qg2 19.Nf5 Nf2 20.Rf2 Qh1 21.h4 Qb1 22.Kd2 Qa2 23.Ke1 Qb1 24.Kd2 Qb2 25.Ke1 g6 26.Nh6 Kg7 27.Ng4 f5 28.Nh2 f4! 29.ef4 Rae8 30.h5 Qc1# 0–1. rla – pierre (2145), internet, 2007.

4.h3 e5 5.Nf3 Ne4 6.Ne4 de4 7.Ne5 Bb4 8.Bd2 Qd4 9.Nf7?? e3 10.c3 ef2 (10...Kf7?! 11.cd4 Bd2 12.Qd2 ed2 13.Kd2-+) 0–1. astrop – pierre (2140), internet, 2007.

4.a3 e6 5.Nb3 Bd6 6.e3 (6.Nc5 Qc8=+) 6...0-0 (6...Nbd7 7.Nf3=+) 7.Nf3 Nbd7 8.c4 (8.Bd3 Ne4=+) 8...dc4 (8...Ne4 9.c5 Be7 10.Bb2=) 9.Bc4 unclear. negda - OffTheWall, ChessWorld.net, 2004.

4.c4 dc4 5.Nc4 e5! 6.Ne5 (6.de5 Qd1) 6...Bb4 7.Bd2 Qd4 8.Ngf3?? (better is 8.Bb4 Qb4 9.Qd2 Qd2 10.Kd2-+) 8...Bd2 9.Nd2 Qe5 10.g3 Nc6 11.Rc1 0-0-0 12.Bg2 Ne4 13.Be4 Be4 14.Rf1 Bf3! 15.Nf3 Rd1 16.Rd1 Qc3 17.Nd2 (17.Rd2 Rd8 18.e3 a5-+) 17...Nd4 (17...Nb4 18.e3-+) 18.f3 (18.Rg1-+) 18...Re8 19.Kf2 Re2 20.Kg1 Rd2 21.Rde1 Nf3 (22.Rf3 Qf3 23.Re8 Kd7 24.Rd8 Kd8 25.h3 Qd1) 0-1. Wloka,Frank - Esser,Michael (1800), remoteschach.de, 2004.

4.a4 Bb7 5.a5 e6 6.Bd2 Be7 7.a6 Bc8 8.b5 0-0 9.g3 c5 10.bc6 Nc6 11.Bg2 (11.Nf3 Bd7+=) 11...Rb8 12.c4 e5 13.Nf3 ed4 14.cd5 Qd5 15.Nh4 Qe6 16.0-0 de3 17.Be3 Qe5 (17...Rd8!? 18.Nd2-+) 18.Ra4 b5 19.Bf4 Qc5 (19...ba4?! 20.Be5 Ne5 21.Qa4=) 20.Be3 Qh5 21.Ra2? (better is 21.Rf4!? Qd1 22.Rd1+=) 21...Bg4-+ 22.Qb3 (22.Qe1 Nd5-+) 22...Be6 23.Qb2 Ba2 24.Qa2 Rbc8 25.Qb3 Bc5 (better is 25...Ng4!? 26.Bf3 Nce5 27.Ba7 Bh4 28.h3 Nf3 29.Qf3-+) 26.Bf3 Qe5 27.Bf4 Qe6 28.Qb5 Bb6 29.Nf5 Rfd8 30.Nc3? h6 31.h4 Nd4 32.Nh6?? Kh7 33.Qb1 g6 34.Be4 Ne4 35.Ne4 Nf3 36.Kg2 Ne5?? 37.Ng5+- Kg7 38.Ne6 fe6 39.Be5 Kh6 40.Bf4 Kg7 41.Qb2 Kf7 42.Bg5 Bd4 43.Qb7 Kg8 44.Qe4 Re8 45.Qg6 Bg7 46.Bf6 Rc7 47.Bg7 Rg7 48.Qe8 Kh7 49.f4 Kh6 50.Qh8 Rh7 51.Qf6 (51.Qf6 Kh5 52.Qg5) 1-0. Orts Gonzalez,Rafael - Gomez Albamonte,Sonia (1760), Barcelona ESP, 2013. (=1.d4 d5 2.e3 Nf6 3.b4)

4.f4 c5 5.c3 Bf5 6.Nf3 e6 7.a3 Bd6 8.Bd3 Bd3 9.Qd3 Nbd7 10.0-0 Ne4 11.Nbd2 Ndf6 12.Ne5 0-0 13.Ne4 Ne4 14.Bd2 Rc8 15.Rac1 Qe8 16.Be1 (16.bc5 A) 16...Nd2? 17.cd6 (worse 17.Qd2 bc5 18.Ra1 Qa4=+) 17...Nf1 18.d7+-; B) 16...bc5 17.c4 Nd2 18.Qd2 cd4 19.ed4 Be5 20.fe5 dc4-/+) 16...Qa4 17.Ra1 cb4 18.cb4 Qc2 19.Qc2 Rc2 20.b5 Be5 21.fe5 Rfc8 22.Bb4 R8c7 23.h4 h5 24.Kh2 Kh7 25.Kh3 (25.Bd6 Rd7=+) 25...Kg6 26.Rf4 Re2 27.Re1 (27.Rf3!?-/+) 27...Nf2 28.Kg3 Re1 29.Be1 Nd3 30.Rf1? (better 30.Bb4 Nf4 31.Kf4-+) 30...Rc1 (30...Ne1?! 31.Re1 Rc3 32.a4-/+) 31.Kf3 Re1 32.Re1 Ne1 33.Kf2 Nc2 34.a4 Kf5 35.Kf3 Nb4 36.g3 Nd3 37.Ke2 Nb2 38.Kd2 Na4 39.Kc2 (39.Kd3 Kg4 40.Kd2 Kg3-+) 39...Ke4 40.Kb3 Ke3 41.Ka4 Kd4 42.Kb3 Ke5 43.g4 hg4 (43...hg4 44.Kc3 Kd6-+) 0-1. Minister007 (2300) - ignat_final (2330), Rated blitz game, lichess.org, 2020.

4.a4 Bf5 5.Ba3 Nbd7 6.Nf3 e6 7.Nbd2 Bd6 8.Be2 (8.b5 Ba3 9.Ra3 0-0+=) 8...Qe7-/+ 9.c3 e5 10.de5 Ne5 11.Ne5 Be5 12.Qb3 0-0 13.0-0 b6 (13...Rad8 14.Bb2-/+) 14.Nf3 Bd6 (14...Ne4 15.Rfc1+=) 15.c4 Be4 16.Nd2 Rad8 17.Rfd1 Rfe8 18.Rac1 (18.g3 dc4 19.Bc4 Bg6+=) 18...a5 19.c5 bc5 20.bc5 Bc7 21.Bb2 Rb8 22.Qa3 Be5 (22...Rb7 23.g3-/+) 23.Be5+= Qe5 24.Nb3 Qg5 25.g3 Ng4 26.h4 (26.Bg4 Qg4 27.Nd4 h5+=) 26...Qg6 (26...Qf5!? 27.Bg4 Qg4-+) 27.Nd4 Nh6 (27...Ne5 28.Ra1-/+) 28.Bd3 (28.h5 Qf6+=) 28...Nf5 (28...Qf6 29.Be4 de4 30.Qa2=) 29.Be4 Re4 30.Nf5 (30.h5 Qh5 31.Rb1 Rbe8-/+) 30...Qf5+= 31.Rd4 Rb4 (31...Qg6 32.h5 Qe6 33.Qd3+=) 32.Rcd1 (32.Qd3 g6 33.Rb4 ab4=) 32...h6 (better is 32...Qf3 33.Qa1 f6-/+) 33.Kf1?? (33.Qd3 Rbd4 34.ed4 Re1 35.Kg2 Qd3 36.Rd3 Ra1+=) 33...Red4 (33...Qf3 34.R4d3 Rec4-+) 34.Rd4?? (better is 34.ed4 Qe4 35.Qd3 Qd3 36.Rd3 Ra4 37.Ke2-/+) 34...Qb1-+ 35.Ke2 Rb3 (35...Rb3 36.Qb3 Qb3-+) 0–1. Tkachev,Ivan – Goldobin,Mikhail, 2008. (=1.d4 Nf6 2.b4 d5 3.e3 c6)

4.c4 Bf5 5.Nc3 e6 6.c5 b6 7.Bd3 a5 8.Bf5 ef5 0–1. anjintrader (2160) – wvmaniac (2515), net–chess.com, 2011.

4.c4 Bf5 5.f4 e6 6.a3 Ne4 7.Nf3 Nd7 8.Nbd2 Bd6 9.Be2 (9.Ne4 Be4 10.c5 Be7=) 9...Ndf6 (9...Nc3!? 10.Qb3 Ne2 11.Ke2 0-0-/+) 10.Ne4 Ne4 (worse 10...de4 11.Ne5+=) 11.0-0 0-0 12.Bb2 Qe7 13.c5 Bc7 14.Nd2 f6 15.Ne4 Be4 16.Bf3 Bf3 17.Qf3 e5 18.f5 ed4 19.ed4 Rfe8 20.Bc3 Qe3 21.Rf2 (21.Qe3 Re3 22.Rac1 Rae8=+) 21...Qf3 (21...Qh6!? 22.Qh3 Qh3 23.gh3 Re3-/+) 22.Rf3=+ (worse 22.gf3 Re3 23.Bd2 Rd3-/+) 22...Re2 23.Re1 Rae8 24.Re2 Re2 25.h4 Kf7 26.Kf1 Re4 27.g3 g6 28.Kf2 (28.fg6 hg6 29.Kf2 Ke6=+) 28...gf5 29.Rf5 Kg6 30.Rf3 f5 31.Rd3 Bd8 (31...Kh5!?-/+) 32.Bd2=+ Bf6 33.Be3 f4 34.gf4 Bh4 35.Kf3 Kf5 36.Rd1 Bf6 37.Rd2 h5 38.Rd1 h4 39.Rd2 h3 40.Rh2 Bd4 41.Bd2 Bb2 42.Rh3 Ba3 43.Rh7 (43.Rh5 Kg6 44.Rh4 Rc4-+ (44...Bb4?! 45.Bb4 Rc4 46.Ba5=)) 43...Bb4 44.Be3 Re3! 45.Ke3 Bc5 46.Kf3 b5 (46...a5 47.Rb7 Bb4 48.Rf7 Ke6 49.Ra7-/+) 47.Rc7? (better 47.Rh6!?=+) 47...Bd6-+ 48.Rc6 Bf4 49.Rc5 Ke5 50.Rb5 Bg5?? (better 50...Bd2-+) 51.Ra5= Kd6 52.Ra7 Kc5 53.Ke2 Bf4 54.Kd3 d4 55.Ra5 Kb6 56.Rf5 Be3 57.Kc4 Kc6 58.Rf6 Kd7 59.Ra6 Ke7 60.Kd3 Kd7 61.Ke4 Ke7 62.Ke5 Kd7 63.Ra7 Kc6 64.Ra3 Kc5 65.Rd3 Exerts pressure on the isolated pawn 65...Kc4 66.Ke4 Bf2 67.Rf3 Be3 68.Rf7 Kc3 69.Rc7 Kd2 70.Rc5 Ke2 71.Ra5 d3 72.Ra3 d2 73.Re3 Kd1 74.Kd3?? (better 74.Kd4=) 74...Kc1-+ 75.Re2 d1Q 76.Ke3 Qd5 77.Kf2 Qc5 78.Re3 (78.Kf3 Kd1 79.Re4 Kd2-+) 78...Qf5 (78...Kd2 79.Kg2 Ke3 80.Kg3 Qg5 81.Kh3 Kf3 82.Kh2 Qg2) 79.Ke2 Qc5 80.Rd3?? (80.Kf2 Kd2 81.Kg3 Ke3 82.Kg2 Qg5 83.Kh3 Kf3 84.Kh2 Qg2) 80...Qc2 81.Ke3 Qc5 (81...Qc5 82.Ke2 Kc2-+) 0-1. Minister007 (2300) - mn8 (2310), Rated blitz game, lichess.org, 2020.

4.Nf3 Bf5=.

4.a3 a6 5.Bb2 Bg4 6.f3 Bh5 7.c4 e6 8.cd5 ed5 9.Nc3 Be7 10.Bd3 0-0 11.Nge2 Bg6 12.Bg6 hg6 13.0-0 Bd6 14.Ng3 (14.Qd3!?+=) 14...Qe7 15.Re1 Bg3 16.hg3 Qd6 17.Kf2 Nh5 18.f4 f6?? (better is 18...Nf6-/+) 19.Qf3+/– f5 20.Qd5 Qd5 21.Nd5 Rac8 22.Rac1 Nf6 23.Nf6 gf6 24.d5 Ne7 25.Red1 Kf7 26.Kf3 Rfd8+= 27.d6 cd6 28.Rc8 Nc8 29.g4 fg4 30.Kg4 f5 31.Kf3 d5 32.g4 Ne7 33.g5 Nc6 34.Bd4 Ke6 35.Bf6 Rc8 36.Rh1 a5 37.Rh7 ab4 38.ab4 Nb4 39.Rb7+– Nd3 40.Rg7 Rc2 41.Rg6 Rf2 42.Kg3 Rf1 43.Bd4 Kf7 44.Rf6 Ke7 45.Rf5 Rg1 46.Kh2 Rf1 47.Rd5 Nf2 48.g6 Ng4 49.Kg2 Rb1 50.g7 Nh6 51.f5 Rb8 52.f6 Kf7 53.Rd7 Kg6 54.e4 Ng8 55.f7 Nh6 56.f8Q Rb2 57.Bb2 Nf5 58.Qf5 Kh6 59.g8N 1–0. ludice (1860) – marcelounex (1750), kurnik, 2011.

4.b5 Nb4?? 5.a3+– Bg4 6.f3 Bh5 7.ab4 Rb8 8.g4 Bg6 9.h4 e6 10.h5 (10...Bb4 11.c3 Bb1 12.cb4+– (12.Rb1?! Bc3 13.Kf2 Ba5+–); < 10.Ra7 Bb4 11.Bd2 Bd2 12.Nd2 h6+–) 1–0. Alissa – cengel, ChessWorld.net, 2002.

4.c3 e5 5.Nf3 e4 6.Ne5 Ne5 7.de5 Ng4 8.f3? (better is 8.Qd4!?-/+) 8...Ne5 (8...ef3 9.gf3 Qh4 10.Kd2 Ne5 11.Be2-+) 9.f4 Ng4 10.Be2 Qh4 11.Kd2? Nf2?? 12.Qe1-/+ Be7 13.g3+= Qf6 14.Qf2 c5 15.h3 cb4+= 16.a4 bc3 17.Nc3+/– Bb4 18.Bb2 Bd7 19.Rhc1 Rc8 20.Kd1?? Bc3-+ 21.Bc3 Rc3 22.Bb5 Rc1 23.Rc1 Qd8 24.Qa2 Bb5 25.ab5 d4 26.Ke2 d3 27.Kd2 0-0 28.Qa7 Qd5 29.b6 Qb5 30.Qa3 Qb6 31.Rc4 Qe6 32.Qb4 Re8 33.g4 b6 34.Rd4 Qa2 35.Kd1 Qe2 36.Kc1 Qc2 0–1. ifairclough – quikeagle, net–chess.com, 2002.

4.a3 Bd7 5.c4 Be7 6.c5 0-0 7.Nc3 Ne4 8.Ne4 de4 9.d5 (9.Be2!?=) 9...ed5 10.Qd5 Bf6 11.Rb1 Qc8 12.Bb2 (12.Qe4?? Bf5 13.Qf4 Bc3 14.Bd2 Bd2 (14...Bb1?! 15.Bc3 a5 16.Bc4 ab4 17.ab4=) 15.Kd2 Bb1-+) 12...Be6 13.Qd2 (13.Qe4? Bf5 14.Qf4 Bb1 15.Bf6 gf6-+) 13...Rd8 14.Qc2 Bb2 15.Qb2 Nc6 16.Bb5 Ne7 17.Ne2 Bg4 18.0-0 Qf5 (18...c6 19.Bc4=) 19.Ng3+= Qe6 20.Rbc1 Bf5 21.Bc4 Qg6 22.Qe5 Be6 23.Qc7 Rd7 24.Qe5 Bc4 25.Rc4 f5 26.Rcc1 Rad8 27.h4 (27.f3 ef3 28.Rf3 Re8+/–) 27...Qf7+= 28.b5 Rd5 29.Qb2 (29.Qc7 R5d7 30.Qa5 Nc8+=) 29...Qe6 30.a4 Kh8 31.Qb3 Qf6 32.h5 Rd3 33.Qc4 R3d7 34.a5 Rd5 35.c6 bc6 36.bc6 Qd6 37.c7 Rc8 38.Ne2 Ra5 39.Rfd1 Rd5 40.Nd4 (40.Rd5 Qd5 41.Qa4 Qe6+/–) 40...Qb6 (40...f4 41.ef4 h6= (worse is 41...Qf4 42.Ne6 Qh6 43.Qe4 Qh5 44.Rd5 Qd5 45.Qd5 Nd5 46.Rd1 Nc7 47.Nc7+–)) 41.Nf5 (better is 41.Nb5! Rb5 42.Qf7+/–) 41...Rf5+= 42.Qe4 Rf7 (42...Rc7?? 43.Qe7 h6 44.Rc7 Qc7 45.Qc7+–) 43.Qc4 (43.Rd7!? Qb2 44.Rc2=) 43...Rff8+= 44.Rd7 Qf6 45.f4 Nf5 46.Qc5 Qe6 (46...Rfe8 47.Rcd1 Nh6 48.R1d6 Qa1 49.Rd1=) 47.Rcd1 Ne3?? (better is 47...Qe3 48.Qe3 Ne3+=) 48.Qf8!+– Rf8 49.Rd8 Rg8 50.Rg8 Kg8 51.Rd8 Kf7 52.c8Q Qc8 53.Rc8 Nd5 54.g3 Ne7 (54...a6 55.Rc6+–) 55.Rc7 a6 56.Ra7 a5 57.Ra5 Kf6 58.g4 Kf7 59.Kg2 Nc6 60.Ra6 Ne7 61.Kg3 Ng8 62.g5 Ne7 63.Kg4 g6 64.Ra7 Kf8 65.hg6 (better is 65.Ra8!? Kf7+–) 65...hg6 66.Ra6 Kg8 67.Kf3 Kf7 68.Ke4 Ke8 69.Ke5 Kd7 70.Ra7 Kd8 71.Kf6 Nd5 72.Kg6 Nf4 73.Kf5 Ng2 (73...Nd5 74.g6 Ne7 75.Re7 Ke7 76.Ke5+–) 74.Kf6 (74.Ra4!? Ne3 75.Ke6 Kc7+–) 74...Nf4 75.Ra5 (75.Ra5+–) 1–0. Guptagm (1940) – vapujara (2065), FICS rated standard game, 2013. (=1.e3 d5 2.d4 Nf6 3.b4 e6)

4.a3 Nbd7 5.c4 dc4 6.Bc4 Nb6 7.Bd3 Be7 8.Nf3+= c6 9.0-0 0-0 10.Qc2 a5 11.b5 cb5= 12.Bb5 Bd7 13.Nc3 Rc8=+ 14.Bd7 Qd7 15.Qb3 Nc4 16.Rb1= b6 17.h3 Rc6 18.Rd1 Rfc8 19.Nb5 Qb7 20.Bb2 Ne4 21.d5 ed5-/+ 22.Rd5 Nb2 23.Qb2 Bf6 24.Rbd1 h6 25.Qb3 Rc1=+ 26.Rc1?? Rc1-+ 27.Rd1 Rd1 28.Qd1= Qc6 29.Qb1 Nc3 30.Nc3 Bc3 31.Qd3 Bf6 32.Nd4 Qc5 33.g3 Qd5 34.Qc3 Qc5 35.Qc5 bc5=+ 36.Nb3 c4 37.Na5 c3 38.a4 c2 39.Nb3 Bc3 40.Kf1 Bd2 41.a5 Ba5 42.Ke2 f5 43.f3 Kf7 44.Kd3 Ke6 45.Kc2 Bb6 46.Kd3 Ke5 47.Nd2 Bc7 48.g4 g6 49.Nc4 Kd5 50.gf5 gf5 51.e4 fe4 52.fe4 Ke6 53.Kd4 h5 54.Nd2 Bb6 55.Kd3 Bf2 56.Nf3 Bg3 57.Ke3 h4 58.Nd4 Ke5 59.Ne2 Be1 60.Kf3 Ba5 61.Nc1 Bd8 62.Nd3+– Kd4 63.Nf2 Ke5 64.Ng4 Ke6 65.Nh6 Bg5 66.Nf5 Ke5 67.Ne3 Bd8 68.Nc4 Ke6 69.Kf4 Bc7 70.e5 Kd5 71.Ne3 Ke6 72.Ng4 Bb8 73.Kg5 Be5 74.Kh4 Ba1 75.Kh5 Kf7 76.Nh6 Kg7 77.Nf5 Kh7 78.Kg5+– Bb2 79.h4 Bc3 80.h5 Bb2 81.Ne3 Bc1= ½–½. Chirpii,Alexandru (1965) – Popa,I (1975), Cupa ULIM, Kishinev MDA, 2005.

4.a3 Nbd7 5.Nf3 b6 6.c4 dc4 7.Bc4 Bb7 8.0-0 Be7 9.Bb2 0-0 10.Nbd2 h6 11.Qb3 c6 12.Rfc1 Bd6 (better is 12...a5!?+=) 13.Be6!+/– Qe7 (13...fe6 14.Qe6) 14.Bf5 Rfe8 15.Nc4 Nd5 16.Nd6 Qd6 17.e4 Ne7 18.e5 (18...Qc7 19.e6+–) 1–0. Eagle_9 (2385) – sturkington (2160), ChessWorld.net, 2003.

4.a3 Be7 5.Bb5 Bd7 6.Nc3 (6.Bd3!?=) 6...Bb5-/+ 7.Nb5 a6 (7...a5!? 8.ba5 0-0-/+) 8.Nc3+= 0-0 9.Nce2 h6 10.Nf3 b5 11.Qd3 Nbd7 12.Bb2 c6 13.Kd2 (13.0-0 Bd6+=) 13...Rc8 (13...a5 14.Qb3-/+) 14.Rag1 Nh7 (14...a5 15.Bc3-/+) 15.h4 Bf6 (15...Nhf6!?-/+) 16.g4+= g5 (better is 16...c5+=) 17.hg5+/– Bg5 18.Ng5 Qg5 19.f4 Qg7 20.g5! Kh8? (20...hg5 21.fg5 Pinning (21.fg5 Decoy)) 21.gh6 Qf6 22.Rg7 Qf5 23.Qf5 ef5 24.Ng3 Ndf6 25.Nf5 Rc7 26.Kd3 Ne4 27.Rgg1?? (better is 27.Rh2+–) 27...Nf2+= 28.Ke2 Nh1 29.Rh1 f6 (29...Rg8 30.e4 Rg2 31.Kd1+=) 30.Rg1 Rff7 31.Nd6 (31.Kf3!?+–) 31...Rfd7+/– 32.Ne8 Rc8 33.Ng7 Nf8 34.f5 Nh7 35.Ne6 Rg8 36.Rh1 (36.Rg8!? Kg8 37.Kf3+/–) 36...Ng5+= 37.Nf4 (37.Nc5 Rh7=) 37...Kh7 38.Nh5 (38.Bc3 Re7=) 38...Ne4 39.Rh2 Rh8 (39...Rg1 40.c3+=) 40.Ng7 (40.Kd3 Re7=) 40...Ng3 (better is 40...Kg8!? 41.Ne6 Ng3 42.Kd3 Nf5-/+) 41.Kf3+= Ne4 42.Ke2 (better is 42.Ne6!?+=) 42...Kg8+= 43.Ne8 (better is 43.Ne6 Ng3 44.Kd3 Nf5 45.Rf2-/+) 43...Rdh7-+ 44.Rg2 Kf7 45.Ng7 Rh6 46.Ne6 Ke7 (46...Rh2!? 47.Nf4-+) 47.Nf4 Kd6 48.Kd3 (48.Kf3 Rh2-+) 48...Ng5 (48...Rh2 49.Rh2 Rh2 50.Ne2-+) 49.Kc3 (49.Bc3!?-+) 49...Rh2 50.Rg1 Ne4 51.Kb3 Rf2 52.Bc1 (52.Ba1 Rf3-+) 52...Rhh2 53.c3 (53.Bb2-+) 53...Rc2 54.a4 (54.Ng2 Rhg2 55.Rg2 Rg2 56.a4-+) 54...Rc3 0–1. rhometal (2230) – vcekota (2370), net–chess.com, 2016.

4.a3 Be7 5.c4 0-0 6.Nc3 b6 7.c5 a5 8.Bb2 Bb7 9.f4 ab4 10.ab4 Ra1 11.Qa1 Ne4 (11...Nc6 12.Qa4=+) 12.Nf3 bc5 13.bc5 f6 14.Ne4 de4 15.Nd2 Nc6 (better 15...Bd5!?=) 16.Bc4 Qd7 17.Qa2 Nd8 18.f5 Bd5 19.fe6 Be6 20.Ne4 Kh8 (20...f5 21.Nf2+/-) 21.d5 Bf5 22.c6 Qc8 23.Ng3 Bb4 24.Kf2 Nf7?? (better 24...Bg6+-) 25.e4 (better 25.Ba6 Qe8 26.Nf5+-) 25...Bg6 26.Ba3 Qb8 27.Bb4 Qb6 28.Kf3 (28.Ke2!? Qb4 29.Bd3+=) 28...Qb4= 29.Be2? (better 29.Rc1=) 29...Qd4 30.Rf1 Ng5 31.Kg4 h5! (31...Be4?! 32.Rf4 f5 33.Kh4-+ (33.Nf5?? Bf5 34.Kg3 Qe5-+)) 32.Kh4 (32.Nh5 f5 Double attack (32...Qe4 Deflection; 32...Ne4 Zwischenzug)) 32...Ne4 33.Rf4? (better 33.Qc4!? Qe5 34.Kh3-+) 33...Qe3 (33...Qg1 34.Nf1 Qg2 35.Qa3 Qg5 36.Kh3 Qf4 37.Qe3 Ng5 38.Kg2 Be4 39.Kg1-+) 34.Re4 Be4 35.Qc4?? (35.Ne4 Re8 36.Nf6 Qf2 37.Kh3 gf6 38.Qd2-+) 35...Bg2 36.Kh5 (36.Qc1 Qc1 37.Ne4 Qf4 38.Kh5 Qf5 39.Kh4 Qh3) 36…Qg5 0-1. Minister007 (2320) - mLed16 (2335), Rated blitz game, lichess.org, 2019.

4.a3 Be7 5.c4 dc4 6.Bc4 a5 7.b5 Nbd7 8.Nc3 Nb6 9.Bd3 0-0 10.f4 Nbd5 11.Bd2 c6 12.Nf3 cb5 13.Nb5 b6 14.0-0 Bb7 15.Qb3 a4 16.Qb2 Nc7 17.Nc3 Ncd5 18.g3 Nc3 19.Bc3 Nd5 20.Bd2 Nf6 21.Rac1 Qd5 22.Bc4 Qd8 23.Rb1 Be4 24.Rbc1 Rc8 25.Bb5 (better 25.Ne5!?=) 25...Qd5-/+ 26.Ne5 (better 26.Be2-/+) 26...h5?? (better 26...Ba3!? 27.Qa3 Qb5-+) 27.Bc6?? (27.Ba4 Ra8 28.Nc6+=) 27...Qd6?? (better 27...Qb3 28.Qa1 A) 28...Ba3?! 29.Rc3 Qb2 30.Ra3 (30.Ba4 Qd2 31.Rf2 Qc3 32.Qc3 Rc3-+) 30...Qa1 31.Rfa1 Bc6 32.Bb4=+; B) 28...Nd5-/+) 28.Be4+- (28.Ba4?! Qa3 29.Qa3 Ba3=; 28.Qb6 Rb8 29.Qa7 Qa3+=) 28...Ne4 29.Bb4 Qd8 30.Rc8 Qc8 31.Be7 Re8 32.Bb4 h4 33.Rc1 Qb7 34.Qg2 f5 35.Nc6 (35.gh4 Rc8 36.Rb1 Qd5+-) 35...Qd7 (35...hg3 36.hg3 Nf6 37.Qe2+-) 36.gh4 Qd5 (36...Qf7+-) 37.Ne7 Re7 38.Be7 (38.Be7 Qb3 39.Rc8 Kh7 40.Qe2+-) 1-0. Minister007 (2425) - Lode77 (2415), Rated blitz game, lichess.org, 2020.

4.a3 Be7 5.Bd3 a5 6.b5 c5=.

4.Ba3 a5 5.ba5 Ba3 6.Na3 Ra5 7.Nb5 c6 8.Nc3 Ra3 (8...b6 9.Nf3=+) 9.Nb1= Qa5 10.Qd2 Qd2 11.Nd2 0-0 12.Nb3 (12.Ngf3 b5=) 12...Ra7 (12...b5 13.Nf3=+) 13.Nc5 (13.c4!?=) 13...b6=+ 14.Nb3 Ba6 15.Ba6 Na6 16.Nf3 (16.c3!?-/+) 16...Nb4-+ 17.0-0 (17.Kd1 Rfa8-+ (worse 17...Ra2 18.Ra2 Na2 19.Ne5-/+)) 17...Nc2 18.Rac1 (18.Rab1 Ra2 19.Ne5 Nb4-+) 18...Ra2 19.Ne5 Rc8 20.Nd2 (20.Rb1 Ne4-+) 20...c5 21.Ndf3 (21.dc5 bc5 22.Nb1 Nb4-+) 21...Ne4 22.dc5 bc5 (22...Rc5?! 23.Nd7 Rc7 24.Nb6-+; 22...Nc5?! 23.Nd4 Nb4 24.Nd7-+) 23.Nd7 (23.Rb1 Nb4-+) 23...Rc7 24.Nb6 (24.Rb1 f6 25.Rb8 Kf7-+) 24...c4 25.Rc2 (25.Nd4 Nd4 26.ed4-+) 25...Rc2 26.Ra1 (26.Nd4 Ra2 27.f3 Nd6-+) 26...h5 (26...Ra7 27.Rd1-+) 27.Ra8 (27.h3 Rb2 28.Ra8 Kh7-+) 27...Kh7 28.h3 (28.h4 Rc1 29.Kh2 c3-+) 28...Rc1 29.Kh2 c3 30.Nd5 (30.Nd4 c2 31.Nc2 R7c2-+) 30...ed5 31.Ra7 (31.Nd4-+) 31...Ra7 32.Ng5 Ng5 33.h4 c2 (33...Ne4 34.f3 Re1 35.fe4 c2 36.Kg3 c1Q 37.ed5 Qe3 38.Kh2 Qf2 39.d6 Qh4) 34.hg5-+ Rh1! 35.Kh1 c1Q 36.Kh2 Ra2 37.g6 (37.Kg3 Qc2 38.Kh3 Qf2 39.g6 Kg6 40.e4 Qg2 41.Kh4 Qg4) 37...Kg6 38.Kg3 Qd2 39.Kf3 (39.Kf4 f6 40.Kg3 Qf2 41.Kh3 Qg2 42.Kh4 Qg4) 39…Qf2 0-1. Enuma_Elish (1845) - unjournakamura (2245), Rated Bullet game, lichess.org, 2017. (=1.d4 Nf6 2.e3 e6 3.b4 d5)

4.Ba3 a5 5.b5 Ba3 6.Na3 Qe7 7.Nb1 e5 8.de5 Qe5 9.Nd2 0-0 10.Ngf3 Qc3 11.Bd3 Bg4 12.0-0 a4 13.h3 Bh5 14.Rb1 Nbd7 15.Qc1 Bf3 16.Nf3 Ne4 17.Qb2 Qb2 18.Rb2 a3 19.Rb4 Nc3 20.Ra1 Nc5 21.Kf1 h6 22.Nd4 Ra4 23.Ra4 N5a4 24.Ke1 Rd8 25.Kd2 Rd6 26.Nf5 Rf6 27.f3 Kf8 28.Nd4 Rb6 29.g3 c5 30.bc6 bc6 31.Nb3 Ke7 32.e4 Kd6 33.ed5 cd5 34.h4 Rb4 35.h5 d4 36.Bf5 Kd5 37.Be4 Ne4 38.fe4 Ke4 39.Re1 Kd5 40.Re7 Nc3 41.Rf7 Na2 42.Rd7 Ke5 43.Re7 Kf6 44.Ra7 Nc3 45.Nd4 Ra4 46.Ra4 Na4 47.Nb3 a2 48.Na1 Nc5 49.Kc1 Ne4 50.Kb2 Ng3 51.Ka2 Nh5 52.Kb3 Nf4 53.c4 g5 54.Kc3 h5 55.Nb3 h4 56.Nd2 Ke5 57.Nf3 Kf5 58.c5 g4 59.Nh4 Kg5 60.Ng2 Ng2 61.Kd4 Nf4 62.Ke4 g3 63.Kf3 g2 64.Kf2 Kf5 65.c6 Ke6 66.Kg1 Kd6 67.c7 Kc7 68.Kf2 Kd6 69.Kf3 g1Q 70.Kf4 Qe1 71.Kf3 Ke5 72.Kg2 Kf4 73.Kh2 Kf3 74.Kh3 Qg3 0–1. bambinik – wolf, internet, 2002.

4.Ba3 Bd6 5.c4 dc4 6.b5 0-0 7.Bc4 Bd7 8.Nf3 a6 9.Qa4 Ba3 10.Qa3 Ne4 11.Bd3 Ng5 12.Ne5 f6 13.Nd7 Nd7 14.ba6 c5 15.Qb3 ba6 16.h4 Nf7 17.Qe6 cd4 18.Qe4 f5 19.Qd4 Qa5 20.Qc3 Qd5 21.0-0 Nde5 22.Rd1 Rac8 23.Be2 Qe6 24.Qa5 Qf6 25.Nd2 f4 26.ef4 Qf4 27.g3 Qf6 28.Qa6 Rc6 29.Qa3 Rcc8 30.Qe3 Nd6 31.a4 Rce8 32.Qd4 Qf7 33.f4 Qg6 34.Nf1 Nf5 35.Qd5 Kh8 36.h5 Qb6 37.Kg2 Nc6 38.Bg4 Qb2 39.Kh3 Nce7 40.Qb5 Qf6 41.a5 Rb8 42.Qe5 Qa6 43.Rd7 Rbe8 44.Ne3 Nc6 45.Qe8 Re8 46.Nf5 g6 47.hg6 hg6 48.Nh4 Nb4 49.f5 gf5 50.Bf5 Re3 51.Rc1 Kg8 52.Bh7 Kf8 53.Nf5 Rd3 54.Rg7 Nc6 55.Rg8 Kf7 56.Re1 Ne5 57.Re5 Rd7 58.Re1 Ra7 59.Rg7 1–0. bambinik (2335) – minnehaha (2245), Partita con Elo, 3m, 2002.

4.Ba3 Nbd7 5.c4 (5.Nf3 a5 6.b5 Ba3 7.Na3 Qe7=) 5...Be7 (5...e5 6.Nc3 dc4 7.Bc4 ed4 8.ed4=+) 6.Nf3 0-0 7.cd5 (7.b5 Ba3 8.Na3 c5 9.bc6 bc6=) 7...Nd5 (7...ed5 8.Bd3=+) 8.Qd2 (8.b5 Re8=) 8...a5 (8...c6 9.e4 N5f6 10.Bd3=+) 9.ba5 Ba3 (9...c5 10.e4 N5f6 11.Bd3=) 10.Na3+= c5 11.Nc4 cd4 12.Nd4 Qg5 (12...Ne7 13.Rc1+=) 13.Rd1 (13.e4 Qd2 14.Kd2 Nf4+/–) 13...Rd8 (13...Nc5 14.Nf3 Qf6 15.Nb6 Nb6 16.ab6+=) 14.e4+/– Qd2 15.Rd2 N5f6 16.f3 Nf8 (better is 16...h6!?+/–) 17.Nc6!+– Rd2 18.Ne7 Kh8 19.Kd2 Bd7 20.Nd6 g6 21.Bc4 Kg7 22.e5 Nd5 (22...Ra5 23.ef6 Kf6 24.Nec8 (24.Nb7?! Rg5+/–) 24...Bc8 25.Nc8+–) ½–½. Benassi,Aspasio – Lindberg,Rune, corr 3GMM–18, 1995.

4.a4 Bb4 5.Bd2 Bd2 (5...Bd6 6.Nf3-/+) 6.Nd2 Ne4 (6...0-0 7.Bb5-/+) 7.Bb5 (7.Ne4!? de4 8.Qg4=) 7...c6=+ 8.Bd3 Nc3 9.Qc1 Qa5 10.Nb3 Qb4 11.Nf3 (11.a5 e5=+) 11...Na2 (better is 11...Na4!? 12.Qd2 Qd2 13.Nbd2 b5-+) 12.Qd2= Nc3 (12...Qd2 13.Kd2 Nb4=) 13.Ne5 (better is 13.Qc1!?=) 13...f6-/+ 14.Ng4? (14.Nf3 a5-/+) 14...a5 (better is 14...h5!? 15.Nf6 gf6 16.Bg6 Kd8 17.0-0-+) 15.h4 (15.f3 e5-/+) 15...h5 (15...e5 16.Nh2-+) 16.Bg6 Ke7 17.Nc5? (17.Nh2 e5-/+) 17...e5?? (better is 17...hg4 18.Nd3 Ne4 19.Nb4 Nd2 20.Nd5 cd5 21.Kd2 Nc6-+) 18.e4?? Bg4-+ 19.de5 Ne4 20.ef6 gf6 21.c3 Qc5 22.Qf4 Qc3 23.Kf1 Qa1 24.Qc1 Qc1 0–1. skommelking – letsbuymour, internet, 2008.

4.c3 a5 5.Nd2 (better 5.b5!?=+) 5...ab4-+ 6.c4 c6 7.cd5 cd5 8.Ngf3 Nc6 9.Bb5 Bd6 10.Bc6 (10.0-0!?-/+) 10...bc6-+ 11.0-0 0-0 12.Nb3 Ba6 13.Re1 Bc4 14.Bb2 Ne4 15.Nfd2 (15.Qc2 Qc7-+) 15...Nd2 (better 15...Nf2 16.Qf3 Nd3-+) 16.Qd2 f6 17.g3 Bb3?? (better 17...Rf7-+) 18.ab3-/+ Qd7 19.e4 c5 (better 19...Ra1!? 20.Ba1 de4 21.Re4 Ra8-+) 20.ed5=+ ed5 21.dc5 Bc5 22.Rad1 Rad8 23.Bd4 Bd4 24.Qd4 Kf7 25.Qb4 Rfe8 26.Re8 Re8 27.Qc5 Attacking the isolated pawn on d5 27...Rd8 28.b4 Qe6 29.b5 Qe2 30.Rd5?? (better 30.Ra1 Kg6 31.b6+/-) 30...Qe1-+ 31.Kg2 Qe4 32.Kf1 (32.f3 Qd5 33.Qa7 Rd7-+) 32...Qd5 (better 32...Rd5 33.Qd5 Qd5-+) 33.Qc7 Qd7 34.Qc4 Qe6 35.Qc7 (35.Qc2 Rd4 36.f3 Qd5-+) 35...Rd7 36.Qc2 Qd5 37.b6 (37.Qc6 Qc6 38.bc6 Rc7-+) 37...Qd1 (better 37...Re7 38.f3 Qf3 39.Qf2 Qh1 40.Qg1 Re1 41.Ke1 Qg1 42.Ke2 Qh2 43.Kf3 Qb2-+) 38.Qd1 Rd1 39.Ke2 Rb1 40.b7 Rb7 41.f4 g5 42.Kf3 gf4 43.Kf4 f5! 44.Kf5 Rb4 45.h4 (45.Kg5 Rd4-+) 45...Rb5 46.Kg4 Rb4 47.Kh3?? (47.Kf5 h5 48.Ke5-+) 47...Rb3 48.h5 Rb4 49.g4 Rb3 50.Kh4 (50.Kh4 h6 51.g5 Rb4 52.Kg3 hg5 53.Kf3 Kg7 54.Kg3 g4 55.Kg2 Kh6 56.Kf1 Kh5 57.Ke2 Kg5 58.Ke3 Rf4 59.Ke2 g3 60.Kd3 g2 61.Kd2 g1Q 62.Ke2 Qd4 63.Ke1 Qb2 64.Kd1 Rf1). BruceLee92 (2445) - Xeibi (2410), Rated Bullet game, lichess.org, 2016. (=1.d4 D00: 1 d4 d5: Unusual lines 1...d5 2.e3 Nf6 3.b4)

4.c3 Bd6=+ 5.Nf3 b6 (5...Nbd7 6.Bd3=+) 6.Bd3= 0-0 (6...a5 7.Qa4 c6 8.b5=) 7.0-0 Bb7 (7...c5 8.dc5 bc5 9.bc5 Bc5 10.Nbd2=) 8.a4 (8.Nbd2 Nbd7=) 8...Nbd7 (8...c5 9.Ba3=) 9.Ba3 (9.a5 c5=) 9...c5 10.bc5 bc5 11.dc5 (11.Nbd2 Qc7=+) 11...Nc5=+ 12.Bc2 (12.Nd4 a6=+) 12...Nfe4 (12...Qc7 13.Bc5 Qc5 14.Na3-/+) 13.Nd4 (13.Be4 de4 14.Bc5 Bc5 15.Qd8 Rfd8=+) 13...Qh4 (13...Ba6 14.Be4 Bf1 15.Bd5 ed5 16.Bc5 Bc5 17.Qf1-/+) 14.g3 (14.Nf3 Qe7-/+) 14...Qh6 15.Nd2 (15.Be4!? Ne4 16.Nd2-/+) 15...Nc3 16.Bc5? (better is 16.Qf3-/+) 16...Nd1 (16...Bc5 17.Qe1 Ba6 18.N2b3 Bd4 19.ed4-+) 17.Bd6 Rfd8 18.Bf4 g5 19.Rfd1 gf4 20.ef4 Ba6 21.N2f3 Qf6 22.Ng5 h6 23.Nh7 Qg7 24.h3 Rdc8 25.Bb1 Rc4 26.Ra3 Rd4 27.Re1 Rb8 28.Bc2 Rd2 29.Rc1 Rb2 30.Bb1 Qd4 (30...Qd4 31.Rc8 Bc8 32.Nf6 Kh8 33.Ng4 Rb1 34.Kg2 Qe4 35.Rf3 Qe1 36.Nh6 Qg1) 0–1. joelynnturner – pierre (2200), internet, 2007.

4.c3 Bd6 5.g3 0-0 6.Bg2 (6.Bd3 a5 7.Ba3 Nbd7=+) 6...b6 (6...a5 7.b5-/+) 7.Nd2 Bb7 (7...e5 8.de5 Be5 9.Ne2=+) 8.Qc2 (8.Ne2 a5 9.b5 c6=+) 8...Nbd7 9.Ngf3 c5 10.bc5 bc5 11.Ba3 (11.Rb1 Rb8=+) 11...Qc7 (11...Rb8 12.Nb3-/+) 12.Rc1 cd4 13.Bd6 Qd6 14.cd4 Rfc8 15.Qb2 Rc1 16.Qc1 Rc8 17.Qb2 Ba6 18.Bf1 (18.Nb3 Bd3 19.Qd2 Qa6-/+) 18...Qc7 (18...Qb4 19.Qa1 (19.Qb4?? Rc1) 19...Qa3 20.Kd1-+) 19.Kd1 Qa5 20.Ba6 Qa6 21.Ng1? (21.Qb3!?-/+) 21...Ne4-+ 22.Ne4?? (better is 22.Ke1-+) 22...Qf1 23.Kd2 de4 24.Ne2 Qh1 25.Qb7 Nb6 26.a4 (26.Qc8 Nc8 27.Nc3-+) 26...Qb1 (26...Qb1 27.Qc8 Nc8-+; 26...Nc4 27.Kc2 Na3 28.Kb3 Qb1 29.Ka3 Qb7 30.Nc3 Rc3 31.Ka2 Rc2 32.Ka3 Qb2) 0–1. cwhite (2265) – dearwish (1800), net–chess.com, 2004.

4.Bd2 Bd6=+.

4.Bd2 Bd7 5.Nf3 Na6 6.Ba6 ba6 7.0-0 Bd6 8.Ne5 Be5 9.de5+= Ne4 10.c4 dc4 11.Qg4+/– Nd2 (12.Nd2 0-0+/–; 11...Bc6 12.Qg7 Rf8 13.Bc3+/–). color1972 – tradicio, ChessWorld.net, 2005.

4.Nf3 Bb4 5.c3 Bd6 6.Bd3 Nc6 7.0-0 0-0 8.Nbd2 Re8 9.Ng5 g6 (9...e5 10.e4 ed4 11.ed5 A) 11...Nd5?! 12.Qh5 Be6 13.Ne6 Re6 A1) 14.Bh7 Kf8 15.Nf3 g6 (15...Nc3 16.Bf5 Qe8 17.Bg5+=) 16.Qh6 Ke8=+; A2) 14.Qh7 Kf8 15.Ne4=; B) 11...Ne5-+) 10.c4 h5 11.h3 e5 12.c5 e4 13.Bb5 Be7 14.f3 Bf8 15.fe4 Bh6 (< 15...de4 16.Bc4 Be6 17.Be6 fe6 18.Nge4 Ne4 19.Ne4+=) 16.h4 Bg4 17.Ndf3 de4 18.Qb3 Bg5 19.Ng5 Rf8? (19...Be6!? 20.Qb2 Bd5=) 20.Bc4 (20.Nf7 Qe7 21.Nd8 Kg7 22.Nc6 bc6 23.Bc6 Be2+/–) 20...Qe7 21.Bd2 Nd8 22.Bc3 Nh7 23.d5 Ng5= 24.hg5 Qg5 25.Bd4 a6 26.a4 Rb8 27.a5 c6 28.d6 Be6 29.Rf4 Bc4 30.Qc4 Ne6 31.Re4 Nd4 32.ed4 Rbe8 33.Rae1 Re4 34.Re4 h4 35.Qb3 Qd5? 36.Qd5+– cd5 37.Rh4 f5 38.d7?? Rd8= 39.g4 f4 40.g5+= Rd7 41.Rf4 Rf7 42.Rg4 Kf8 43.Rg3 Ke7 44.Kg2 Kd7 45.Rf3 Rf5?? 46.Rf5+– gf5 47.Kf3 Ke6 48.Kf4 Kf7 49.Kf5 Kg7 50.Ke6 Kg6 51.Kd5 1–0. tojowojo (1980) – mwojo (2100), net–chess.com, 2011.

4.Nf3 Bb4 5.Bd2 Bd2 6.Qd2 0-0 7.Na3 (7.Bd3 Ne4 8.Qe2 c5-/+) 7...Nc6 (7...c5 8.Bd3-/+) 8.Bb5 Bd7 9.Bc6 Bc6 10.Ng5 (10.0-0 Nd7-/+) 10...h6 11.Nf3 Ne4 (11...Qd6 12.Qa5-/+) 12.Qd3 a6 13.0-0 b5 14.Ne5 Qd6 15.f3 Nf6 16.Rab1 Rad8 17.Qc3 Bb7 18.Qd3 (18.Qb2 c5-/+) 18...c5 19.f4 (19.Rb2!?-/+) 19...c4 20.Qc3 Ne4 21.Qe1?? (better is 21.Qa5-+) 21...Qa3 22.f5 (22.Ra1 Qa4 23.Qe2 c3-+) 22...Qa2 23.c3 Nd2 24.Ra1 Qc2 25.Rf2 Qc3 26.Rd2 ef5 27.Rc1 Qa3 28.Ra1 Qd6 29.Qf2 f6 30.Ng6 Rfe8 31.Re1 Qb4 32.Rdd1 c3 33.Rc1 Qc4 34.Qf5 b4 35.h4 a5 36.g4 a4 37.g5 hg5 38.hg5 fg5 39.Rf1 Qc8 40.Qf3?? Re4 41.Qh5 Qg4 42.Qg4 Rg4 43.Kh2 Re4 44.Rf3 Rd6 45.Rf8 Kh7 46.Nh8 Re3 47.Nf7 Re2 48.Kg1 Rb6 49.Ng5 Kg6 50.Nf3 Kh7 51.Ng5 Kg6 52.Kf1?? Rd2 53.Nf3 Ra2 54.Kg1 Re6 55.Nh4 Kh7 56.Rcf1 Rh6 57.R8f4 Ba6 58.R1f2 Rf2 59.Kf2 c2 60.Nf3 c1Q 61.Rf5 Qc2 62.Kg3 Qf5 (62...Qf5 63.Kg2 Qc2 64.Kg3 Rg6 65.Ng5 Rg5 66.Kf4 Qd2 67.Kf3 Qc3 68.Kf4 Qg3#) 0–1. kong – I need chocolate, ChessWorld.net, 2005.

5.ba5 Bd6 6.Bd3=+.

5.b5 c6 6.Nf3 cb5 7.Bb5 Bd7 8.Bd3 Be7 9.c4 dc4 10.Bc4 0-0 11.Bd3 Bc6 12.Nc3 Nbd7 13.0-0 Nb6 14.e4 Qc7 (14...Rc8 15.Rb1=) 15.Qb3 Rfd8 16.Bd2 (16.Rb1 Nbd7+=) 16...Nbd7 17.Nb5 Qb6 18.Rfe1 Ne4 (18...a4 19.Qb2+=) 19.Re4+/– Be4 20.Be4 Nf6 21.Bd3 Nd5 22.Rc1 Rdc8 23.Rc8 Rc8 24.Ne5 f6 (24...Qd8!?+/–) 25.Nc4+– Qd8 26.Na5 b6 27.Nc4 g5 28.Ne3 Nf4 29.Bc4 Nd5 30.Bd5 ed5 31.Na7 Ra8 32.Nc6 Qd7 33.Ne7 Qe7 34.Qd5 (34...Qf7 35.Qa8 Qf8 36.Qf8 Kf8 37.Nd5+–) 1–0. JF_ – touwladder, ChessWorld.net, 2004.

5.b5 Bd6 6.Nf3 Nbd7 7.c4 dc4 8.Bc4 Nb6 (8...0-0 9.Nc3=) 9.Bd3+= 0-0 10.0-0 Nbd7 11.Bb2 Qe7 12.Ne5 Be5 (12...Rd8 13.Qc2+=) 13.de5+/- Ne5?? (better 13...Nd5+/-) 14.Qc2 (14.Be5 Rd8 15.Qc2 c6+-) 14...h6?? (14...Nd3 15.Qd3 Rd8 16.Qc2-/+) 15.Rc1 (15.Be5 Rd8+-) 15...Rb8?? (15...Nd3 16.Qd3 Rd8 17.Qc3-/+) 16.Nc3 (better 16.Be5 Bd7 17.Qd2+- (17.Qc7?! Rbc8=)) 16...c6 (better 16...Nd3!? 17.Qd3 Rd8=+) 17.Ne4= Bd7?? (better 17...Nfd7=) 18.Nd6 (better 18.Be5!? Ne4 19.Bb8 Nf2 20.Bh7 Kh8+-) 18...cb5?? (better 18...Qd6 19.Rd1 Nd3 20.Rd3 Qc7-+) 19.Nb5?? (better 19.Be5 Ng4 20.Bg3+-) 19...Nc6 (19...Rfc8 20.Be5 Rc2 21.Rc2-/+) 20.Qe2 (20.Qc5 Rfd8=+) 20...a4 (better 20...e5=+) 21.Qg4?? (better 21.Rc4=) 21...Nd5 (better 21...Ng4 22.h3 Nge5-+) 22.Qa4 (22.Qg7) 22...Qg5 (22...e5 23.Nc3 Nf6 24.Qh4+=) 23.Qe4 f5 24.Qf5?? (better 24.Qf3+=) 24...Nf6 (better 24...ef5 25.Bf1 f4-+) 25.Bf6 (25.Qg5!? hg5 26.Rc5 Rbd8+-) 25...Qf6 (better 25...Qf5 26.Bf5 ef5+/-) 26.Nd6?? (better 26.Qh7 Kf7 27.Ra2+-) 26...Rfc8 (26...ef5 27.Rd1-+) 27.Ne4 (better 27.Qh7 Kf8 28.Nc8 Rc8 29.Rab1+-) 27...b5 (better 27...Qf5 28.Nc5 Qf7-+) 28.Qb5 (better 28.Nf6 gf6 29.Qh7 Kf8 30.Qd7+-) 28...Rb5? (28...Qf7 29.Qa6 Qe7+-) 29.Bb5 (better 29.Nf6 gf6 30.Bb5+-) 29...Qe5-+ 30.Nc5 Rf8 0-1. Min,Zhengyang - Long,Enze, Belt and Road Hunan Op C, 2019.

5.b5 Nbd7 6.a4 e5=+ 7.de5 Ne5 8.Be2 Ne4 9.Nf3 Bb4 10.Bd2 Qf6 11.Bb4 (11.c3 Nf3 12.Bf3 Bf5-/+ (12...Bc3?! 13.Nc3 Nc3 14.Qc2=; worse 12...Nc3 13.Nc3 Bc3 14.Rc1 Bd2 15.Qd2=+; worse 12...Nd2 13.Qd2 Be6 14.0-0=+)) 11...Nf3-+ (11...ab4?! 12.Qd4 Nf3 13.Bf3 Qd4 14.ed4=) 12.Bf3 (12.gf3!? Qa1 (12...ab4?! 13.Ra2 Nc5 14.a5=+) 13.fe4 ab4 14.ed5 0-0-+) 12...Qa1 (12...ab4?! 13.Ra2 Be6 14.0-0=+) 13.Be4 ab4 (13...de4!? 14.Ba3-+) 14.Bd5-/+ 0-0 15.0-0 (15.Bb3!?-/+) 15...Qa4-+ 16.Bc4 (16.Qd3 Bd7 17.Bc4 Rfd8-+) 16...Bf5 17.Bd3 Rfd8 18.Qc1 (18.b6 c5-+ (worse 18...cb6 19.Qe2 Qd7 20.e4-+)) 18...Bd3 19.cd3 Rd3 20.Qc7 (20.h3 c6 21.bc6 bc6-+) 20…Rd1 (20...Rd1 21.g3 Rf1 22.Kf1 Qd1 23.Kg2 Qb1 24.Qb7 Rf8-+; worse 20...Qb5 21.h3-+) 0-1. Noai – marekt, ChessWorld.net, 2020.

5.b5 Nbd7 6.Nf3 Bd6=.

5.b5 Nbd7 6.f4 Ne4 7.Nf3 Be7 8.Nbd2?? (better is 8.Bd3=) 8...Nc3-+ 9.Bb2 (9.Qe2 Ne2 10.Be2 Nf6-+) 9...Nd1 10.Rd1 0-0 11.Bd3 Nf6 12.Ke2 Bd7 13.a4 c5 14.c4 cd4 15.Bd4 b6 16.h4 Rc8 17.Rdg1 dc4 18.Nc4 Bc5 19.g4 Bd4 20.Nd4 Nd5 21.Nd6 Rc7 22.Ne4 Qe7 23.Ra1 e5 24.fe5 Bg4 (24...Bg4 25.Kf2 f5 26.ef6 Nf6-+) 0–1. PawnPower – yitwail (1695), internet, 2007.

5.Bb2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 Bd6 5.d4).

5.c4 dc4 6.Bc4 0-0 7.Nc3 Nd5 8.Nd5 ed5 9.Bd3 Nd7 10.Qc2 Nf6 11.Nf3 h6 (11...Re8 12.0-0=) 12.0-0 c6 13.Bf5 (13.Bb2!?=) 13...Bf5+= 14.Qf5 Qd7 15.Qd7 Nd7 16.Nh4 Be7 (16...f5 17.Nf3+=) 17.Nf5= Bf6 18.f3 Nb6 19.Nd6 (19.Rb1=) 19...Be7 (better is 19...Rab8!? 20.Nf5 Kh7+=) 20.Nb7+= Nc4 21.Nc5 (21.e4!?+=) 21...a5= 22.Nb3 (22.Rb1!?=) 22...ab4+= 23.a4 (23.ab4 Bb4 24.Ra8 Ra8+=) 23...Na5 24.Na5 Ra5 25.Bd2 c5 (25...Rfa8 26.Rfc1 Ra4 27.Ra4 Ra4 28.Rc6-+) 26.dc5 Bc5 27.Rfc1 Rfa8 28.g4 (better is 28.Rab1+=) 28...Ra4?? (better is 28...Bf8-/+) 29.Ra4+/– Ra4 30.Rc5 b3 31.Rb5 (31.Rd5 b2 32.Rb5 Ra1 33.Kf2 b1Q 34.Rb1 Rb1+=) 31...Ra1 (31...h5 32.g5 Ra1 33.Kf2+–) 32.Kf2 Rd1 (32...Rb1 33.Bc3+– (33.Rd5?! Rd1=)) 33.Ke2 (33.Bc3 Rb1+–) 33...Rh1 34.Rb3 Rh2 35.Kd3 1–0. may – mpopp, net–chess.com, 2018.

5.c4 dc4 6.Bc4 0-0 7.Nc3 e5 8.Nf3 ed4 9.Nd4 c5 10.bc5 Bc5 11.Nb3 Qd1 12.Nd1 Bb6 13.0-0 Nc6 14.Bb2 Ne4 15.Nc3 Nc3 16.Bc3 Be6 17.Be6 fe6 18.Rad1 Rad8 19.g3 Kf7 20.Kg2 g6 21.e4 Ke7 22.f4 Rd1 23.Rd1 Rd8 24.Rd8 Kd8 25.Kf3 Kd7 26.Ke2 e5 27.Kd3 ef4 28.gf4 Bg1 29.h3 Bh2 30.Bd2 b6 31.Nd4 Nd4 32.Kd4 Bg1 33.Kd5 Bc5 34.a4 Be7 35.e5 a6 36.e6 Kc7 37.Bc3 b5 38.ab5 ab5 39.Be5 Kd8 40.Bc3 b4 41.Bd4 b3 42.Kc4 Kc7 43.Kb3 Kd6 44.Kc4 Ke6 45.Kd3 (45.Be5!?=+) 45...Kf5-/+ 46.Ke3 Bd6 47.Kf3 Bf4 48.Bc5 h6 49.Bd4 g5 50.Bc5 h5 51.Bd4 Be5 52.Be5 Ke5 53.Ke3 Kd5 54.Kf3?? (better 54.Kd3 Ke6 55.Ke2-+) 54...Kd4 55.Kg3 (55.Ke2 Ke4 56.Kf2-+) 55...Ke3 56.Kg2 Kf4 57.Kf2 h4 58.Kg2 Ke3 59.Kf1 Kf3 60.Kg1 Kg3 61.Kh1 Kh3 (61...Kh3 62.Kg1 Kg3-+) 0-1. Minister007 (2310) - Ianniello (2355), Rated blitz game, lichess.org, 2020.

5.c4 c6 6.f4 0-0 7.Nf3 Ne4 8.c5 Bc7 9.Nbd2 b6 10.Bd3 f5 11.0-0 Ba6 12.Ba6 Na6 13.Ne4 de4 14.Nd2 bc5 15.bc5 Qd5 16.Qc2 Bd8 17.Nc4 Be7 18.Rb1 Rab8 19.Bd2 Rb5 20.Rb5 cb5 21.Ne5 Rc8 22.Rb1 Nc5? (22...g5 23.Rb5 gf4 24.Qc3+/-) 23.dc5 (23.Rb5 a6 24.Ra5+- (24.Rc5?! Bc5 25.dc5 Qc5 26.Qc5 Rc5+=)) 23...Rc5+/- 24.Qd1 Rc8 25.Bb4 Bd8 26.Qd5 (26.Qh5 Bf6 27.Qf7 Kh8 28.Qa7 Be5 29.fe5 h6+-) 26...ed5+/- 27.Rd1 Bb6 28.Kf2 Rc2 29.Kg3 Be3 30.Rd5 h6 31.Rb5 Bf2 32.Kh3 e3 (32...g5 33.g4 h5 34.Rb8 Kg7 35.Rb7 Kg8 36.gf5 g4 37.Ng4 hg4 38.Kg4+-) 33.Nf3 e2 34.Rf5 Rb2 35.Re5 Kf7 36.g4 Rb3 37.Kg2 Bb6 (37...Be3 38.f5+-) 38.Re2 a5 39.Be7 a4 40.Bb4 Kg8 41.f5 Bd8 (41...Re3 42.Rc2 Re8 43.Rc6+-) 42.h4 (better 42.Re8 Kh7 43.Rd8 Rb2 44.Bd2 g5+-) 42...Be7 (42...g6 43.Re6 Rb2 44.Kf1 Rb1 45.Kf2 Rb2+- Re5) 43.h5 (43.Nd4 Kf8) 1-0. Minister007 (2305) - alfredogto (2340), Rated blitz game, lichess.org, 2020.

5.Nf3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d4 Bd6 5.e3).

4.a3 e6 5.Bb2 a5 6.b5 c5 7.Nf3 c4 8.Nc3 Nbd7 9.g3 Bd6 10.Bg2 0-0 11.0-0 h6 12.Nd2 Nb6 Black intends a4 13.e4 de4 14.Qe2 Qd7 15.Nde4 Be4 16.Be4 a4 17.Rfe1 (17.Bg2 Rfc8=) 17...Rfc8 18.Qf3 Ne4 19.Qe4 Bf8 20.Qg4 Rd8 21.Rab1 Qc7 22.Re5 Nd7 23.Ree1 Nf6 24.Qf3 Nd5 25.Re5 Nc3 26.Qc3 Rac8 27.Kg2 Rd5 28.Bc1 Qd6 29.Be3 Be7 30.b6 Qc6 31.Kg1 Rcd8 32.h3 R5d7 33.Qa5 Ba3 34.Reb5 e5 35.Re5 Rd5 36.Rd5 Rd5 (worse is 36...Qd5 37.Qd5 Rd5 38.Ra1+/–) 37.Qc3 Be7 38.Ra1 Rh5 39.h4 a3 40.Bd2 Rb5 41.Bc1 Bb4 (41...Qb6?! 42.Ba3 Bf6 43.Rd1+=) 42.Qe3 c3 (42...Qb6?! 43.Ba3 Ba3 44.Ra3=) 43.Qd3 Bd6 44.d5 (44.Ba3?? Ba3 45.Re1 Bf8-+) 44...Qb6 (44...Rd5!? 45.Qf3 Qb5-/+) 45.Kg2-/+ Rb1 46.Be3 Qb2 47.Rb1 Qb1 48.Bd4 b5 49.Bc3 (49.Qc3 Qd1-/+) 49...b4 50.Bd4 b3 (50...b3 51.Qb3 Qb3 52.cb3 Be7-/+) 0–1. marekt – vdbips, ChessWorld.net, 2015.

4.Nc3 Nbd7 5.Bb5 c6 6.Ba4 a6 7.h4 e5 8.Rb1 b5 9.Bb3 Bd6 10.Ba3 (better is 10.a3-+) 10...a5 11.Qf3 (11.de5 Be5 12.Bb2 a4 13.Bd5 Bc3 14.Bc3 cd5-+) 11...g6 (11...Bg4 12.Qg3 Qc7 13.Bd5 ed4 14.f4 dc3 15.Bf3 Bf3 16.gf3-+) 12.Qg3 (12.Bd5 cd5 13.Nb5-+) 12...ab4 13.Nf3 (13.Nb5 cb5 14.Bb2-+) 13...ba3 14.0-0 b4 (better is 14...Qc7!? 15.de5 Ne5 16.Qf4-+) 15.de5 Nh5 (< 15...bc3 16.ed6 c5 17.Ng5-+) 16.Qg5 (16.Qh2 Bb8 17.Ne2-+) 16...Be7 17.Qh6 bc3 18.Nd4 Ne5 19.Nf5 (19.e4 Ng4 20.Qc1 Qc7-+) 19...Ng4 20.Ng7 Kd7 21.Qh5 gh5 22.Nf5 Rg8 (22...Bc5 23.g3-+) 23.Rbd1 Qb8 24.Bd5 Qh2 0–1. Crossman,Chris – Soule,Larry P, IECG, 2003.

4.c4 dc4 5.Bc4 e5 6.de5? (6.Qb3!? Qe7 7.de5=) 6...Qd1=+ (6...Bb4?! 7.Bd2 Bd2 8.Nd2+=) 7.Kd1 Ng4 8.Ke2 Ne5 (8...Bb4?! 9.Bb2=+) 9.Bd5 Bd3 (9...Bb4 10.Bb7 Bd3 11.Kd1+/-) 10.Kd2 c6 11.Bf3 Bb4 12.Nc3 Na6 13.Bb2 0-0-0 14.Ke1? (14.Kc1-+) 14…Nc4 (14...Nf3?! 15.Nf3 Nc5 16.Kd1-+) 0-1. Minister007 (2365) - lcpazv (2320), Rated blitz game, lichess.org, 2021. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4 d5 3.e3)

4.c4 dc4 5.Bc4 e6 6.a3 a5 7.b5 Nbd7 8.Nc3 Nb6 9.Bd3 Bd3 10.Qd3 Be7 11.Nf3 0-0 12.0-0 Nbd5 13.Bd2 h6 14.Rfc1 c6 (14...Nc3!? 15.Rc3 Nd5+=) 15.bc6+/- bc6 16.Na4 c5 (16...Nb6!? 17.Qc2 Na4 18.Qa4 Qd5 19.Rc6 Rfb8+/-) 17.Nc5+- Rc8 18.Nb7 Qb6 19.Na5 Ra8 20.Nc4 Qa6 21.h3 Rfc8 22.g4 (22.Nfe5 Nb6+-) 22...Ne8 23.Kg2 f6 24.e4 Nb6 25.Nb2 Qb7 (25...Qd3 26.Nd3 Ra3 27.Rc8 Nc8 28.Ra3 Ba3 29.Be3+-) 26.a4 (26.Qb3!? Qe4 27.Qb6 Rcb8+-) 26...Nd6 27.Re1 Nd7 28.Nd1 Rc4 29.a5 Bf8 30.e5 fe5 31.de5 Nc5 32.Qe2 (32.Qg6!? Nb5 33.Be3 Nd4 34.Bd4 Rd4+-) 32...Re4+/- 33.Be3 (worse 33.ed6 Re2 34.Re2 Bd6=+) 33...Nc4 34.Qc2?? (better 34.Nc3 Ne3 35.fe3+/-) 34...Nb3?? (34...Ne5 35.Qe2 Ncd3 36.Nc3-+) 35.Ra4 (better 35.a6 Ra6 36.Ra6 Ne5 37.Rb6 Rg4 38.hg4 Qf3 39.Kh2 Qg4 40.Qe2 (40.Rb3?? Nf3 41.Kh1 Qh3) 40...Nf3 41.Qf3 Qf3 42.Rb3 (42.Re6? Bb4 43.Rg1 Ba5 44.Re8 Kh7-+) 42...Bd6 43.Kg1 Qg4 44.Kh1=) 35...Ne3-/+ 36.Re3 Ra4 37.Rb3 Qd5 38.Ne3 Qa5 39.Qc6 Qa6 40.Rb6 Qc8 41.Qe6 Qe6 42.Re6 R4a5 (42...Bc5!?=) 43.Rc6+/- Re8 44.Nf5 Ra7 45.Rb6 Rd8 46.Rb5 Re8 47.N3d4 1-0. Minister007 (2410) - oldmisio (2370), Rated blitz game, lichess.org, 2020.

4.Nd2 e6 5.Rb1 Nc6 6.Bb5 a5 7.ba5 Ra5 8.a4 Bd6 9.Nb3 Ra8 10.Bc6 bc6 11.a5 Bb4 12.Bd2 Bd2 13.Qd2 Ne4 14.Qb4 Qh4 15.g3 Ng3 16.fg3 Qe4 17.Qc3 Qh1 18.Qc6 Ke7 19.Kd2 Qh2 20.Ne2 Rhc8 21.a6 Qf2 22.a7 Kf6 23.Qa6 Bg4 24.Nbc1 c5 25.dc5 Rc5 26.Rb8= Bf5 27.Qa1 e5 28.c3 d4 29.ed4 ed4 30.c4 Be4 31.Qa3 Qe3 32.Qe3 de3 33.Kc3 Ra5 34.Kd4 Bh1 35.Ra8 Ba8 36.Ke3 Ra7 37.Nc3 Re7 38.Kd3 Ke5 39.c5 Bg2 40.Nb3 Rd7 41.Ke3 Bf1 42.Ne2 Be2 43.Ke2 Rb7 44.Na5 Rb5 45.Nc4 Kd5 46.Ne3 Ke4 47.Nc4 Rc5 48.Nd2 Kf5 49.Kd3 Rd5 50.Ke3 Rd2 51.Kd2 h5 52.Ke2 Kg4 53.Kf2 h4 54.gh4 Kh4 55.Ke3 Kg4 56.Kf2 f5 (57.Ke2 Kg3-+) 0–1. Bestia03g – Gandalf432g, computer chess game, 2000.

4.Nd2 e6 5.b5 Bb4 6.Rb1 Qd6 7.a3 (7.Rb3 Nbd7=+) 7...Ba3-/+ 8.Ba3 Qa3 9.Nb3 a5 10.ba6 Na6 11.Bb5 c6 12.Ba6 Ra6 (12...Qa6? 13.Ra1 Qa2 14.Ra2 Ra2 15.Qb1 Rc2 16.Nd2+-; 12...ba6?! 13.Ne2-/+) 13.Ne2 Qb4 14.Nd2 Qe7 15.f3 0-0 16.Ng3 Bg6 17.e4 h5 (17...e5 18.de5 Qe5 19.Qe2-+) 18.e5-/+ Nh7 19.h4 (19.Rb2 Rfa8 20.0-0 h4-/+) 19...f6 20.f4 fe5 21.fe5 Ra2 22.Rc1 Qb4 23.c3 (23.Ne2 Qa4 24.Nb3 Bc2 25.Rc2 Qb3 26.Ra2 Qa2-+) 23...Qb2 24.Rf1 Rf1 25.Kf1 (25.Ngf1 Bc2 26.Qc2 Qc2 27.Rc2 Rc2 28.Ng3-+) 25...Qd2 26.Qd2 Rd2 27.Ra1 Nf8 28.Kg1 (28.Ra7 b5-+) 28...c5! 29.dc5 Nd7 30.c6 (30.Ra5 Ne5 31.Kf1 Rc2-+) 30...bc6 31.Ra6 (31.Re1 Rc2 32.Ne2 Be4-+) 31…Ne5 0-1. josquin (1935) - marekt (2215), gameknot.com, 2015.

4.Bd3 Bd3 5.Qd3 Qd7 6.Nf3=.

4.Bd3 Bd3 5.Qd3 e6 6.Ba3 (6.Bd2 Nbd7=+) 6...Bd6 (6...Nbd7 7.Nf3=) 7.Nd2 (7.Qb5 Nbd7 8.Qb7 0-0=) 7...Nbd7 (7...Qe7 8.c4 dc4 9.Nc4 Bb4 10.Bb4 Qb4 11.Nd2=+) 8.c4 dc4 9.Nc4 0-0 (9...Qe7 10.Nd6 cd6 11.Rc1=) 10.e4 (10.Nf3 Re8=) 10...Be7 (10...Qe7 11.Nd6 cd6 12.Nf3=) 11.Nf3 c6 (11...Nb6 12.Nce5 Nc8=) 12.e5 (12.0-0!?=) 12...Nd5=+ 13.g3 (13.0-0 N7b6=+ (13...Nb4?! 14.Bb4 Bb4 15.Qb3=; < 13...Bb4 14.Bb4 Nb4 15.Qb1=)) 13...Bb4 (13...N7b6 14.Nb6 Nb4 15.Qb3 Qb6 16.0-0-/+) 14.Bb4 Nb4 15.Qb1 c5 16.0-0 cd4?? 17.Nd4?? Nb6 18.Rd1 N4d5 19.Nd6? Nc8 20.N4b5 Nd6-/+ 21.Nd6 b6 22.Qb3 Qg5 23.Re1 h5 24.h4 Qg4 25.Re4 Qg6 (25...Qg6 26.Rd4 f6 27.Rd5 ed5=). PawnPower – mpatihk19 (1610), internet, 2007.

4.Bd3 Bg6 5.Nf3= e6 6.Bg6 hg6 7.a3 c6 (7...Ne4 8.Nfd2=+) 8.Qd3= b5 (8...a5 9.b5=) 9.a4 (9.Bd2 Ne4=) 9...Qb6 (9...Bb4 10.c3 Ba5 11.ab5=) 10.c3= a5 11.ab5 cb5 12.0-0 (12.ba5 Ra5 13.Ra5 Qa5=) 12...Nbd7 (12...Bd6 13.Na3 ab4 14.cb4 Bb4 15.Rb1=) 13.ba5 Ra5 14.Ra5 Qa5 15.Bb2 Nb6 16.Nbd2 Nfd7 (16...Nc4 17.Nc4 bc4 18.Qc2=) 17.Ra1 Na4 18.Ba3 (18.Ra2 Bd6+=) 18...Nc3= (18...Qc3? 19.Rc1 Qc1 20.Bc1+-) 19.Nb3 Qc7 20.Bc5 Na4 (20...Nc5 21.Ra8 Ke7 22.Qc3 Na6+/-) 21.Qb5 Bc5? (better is 21...Nab6+/-) 22.Ra4 (22.dc5 Nc3 23.Qb4 Ne2 24.Kf1 0-0 25.Ke2 Rb8+-) 22...Ke7 (22...Be7 23.Ra8 Bd8 24.Ne5+-) 23.Nc5 Rb8 24.Qf1 Nc5 25.dc5 Qc5 26.g3 (26.Qd1 Rc8+-) 26...Rb7 (26...Ke8 27.Qd1+-) 27.Qa1 f6 28.Ra8 Kf7 (28...Rc7 29.Kg2+-) 29.Nd4 Qb4 30.Qa6 (30...Qb6 31.Qe2+-) 1-0. Winiger,Albert - Baer,Werner, TT-07 TSC, 2003.

4.Be2 e6 5.a3 Nbd7 6.Nf3 Bd6 7.Nh4 Be4 8.0-0 Ng4 9.Bg4 Qh4 10.g3 Qf6 11.Nc3 Bg6 12.Qe2 c6 13.f4 0-0 14.Bb2 (14.Rd1 a5 15.b5 Bc5+=) 14...a5 15.b5 Nb6 16.bc6 bc6 17.Rfd1 Nc4 18.Bc1 Qe7 19.a4 Bb4 20.Na2 Ba3 21.c3 Rfb8 22.Bf3 (better is 22.Ba3 Na3 23.Nc1-/+) 22...Bb2-+ 23.Bb2 Rb2 (23...Nb2?! 24.Rdc1-/+) 24.Qe1 Bc2 25.Rdc1 Bb3 26.Rcb1 Nd2 (26...Ba2?! 27.Rb2 Nb2 28.Ra2+=; 26...Ra2?! 27.Rb3 Nd2 28.Kg2 Ra1 29.Qd2 Ra4 30.Qb2-+) 27.Qd2 Rd2 28.Rb3 e5! (28...e5 29.fe5 Qg5-+) 0–1. Kupec,Jan – Markus,Roland, CiF, 1996.

4.Be2 e6 5.Nf3 Bb4-/+ 6.Bd2 Bd2 (6...Bd6 7.Nc3-/+) 7.Qd2 0-0 8.Ne5 Ne4 9.Qb4 b6 10.0-0 Qd6 11.Qb5 a6 12.Qd3? (better is 12.Qb2!?-/+) 12...Nd7 13.f4 c5 (13...Ng3! 14.Qb3 Ne2 15.Kf2-+) 14.g4 Bg6 15.g5 (better is 15.Ng6!? fg6 16.Nd2 Nd2 17.Qd2-/+) 15...Ne5 16.fe5 (16.de5 Qc7 17.Qd1-+) 16...Qe7 17.Nd2 (17.h4 Ng3 18.Qd2 Nf1 19.Bf1-+) 17...Qg5 18.Kh1 Nf2! 19.Rf2 Bd3 20.Bd3 Qe3 21.Kg2 (21.Re2 Qd4 22.Nb3 Qf4-+) 21...Qd4 22.Raf1 c4 23.Nf3 Qg4 24.Kh1 cd3 25.cd3 Rfc8 26.Rg1 Qf4 27.d4 Rc3 28.Rg3 Rc1 29.Kg2 Rac8 30.Kh3 R1c3 31.Nd2 Rg3 32.hg3 Qf2 33.Nb3 Rc3 34.Kg4 Qg3 35.Kh5 h6 36.Nd2 Qg5 0-1. Doobi - Germanicus, ChessWorld.net, 2005.

4.Nf3 e6 5.a3 a5 6.b5 Be7 7.Bd3 0-0 8.Bf5 ef5 9.0-0 Nbd7 10.Qd3 Ne4 11.Nbd2 Re8 12.c4 Bf6 13.Bb2 c6 14.a4 cb5 15.ab5 g5 (15...a4!?=) 16.Qb3 Nb6 17.c5 Nc4 18.Nc4 dc4 19.Qc2 Qd5 20.Rfd1 g4 21.Nd2 Nd2 22.Qd2 a4 23.Qe2 b6 24.Ba3 bc5 25.dc5 Qe4 26.Rac1 Rad8 27.c6 Rd3 28.Rd3 cd3 29.Qd2 (29.Qd1 Rc8+–) 29...f4+= 30.c7 fe3 31.Qe3 Qe3 32.fe3 (32.fe3 d2 33.Rd1+–) 1–0. Jenneborg,Seved – Sijses,Wim, IECG, 2004.

4.Nf3 e6 5.a3 c6 6.c4 Be7 7.Qb3 0-0 8.Nc3 dc4 9.Bc4 b5 10.Be2 a5 11.ba5 Qa5 12.Bb2 Nbd7 (12...Ne4 13.Ne5=) 13.0-0 Ne4 14.Rfc1 Rfd8 15.Qc2 Nd6 (15...Nc3 16.Qc3 Qc3 A) 17.Bc3? Ba3 (17...Ra3?! 18.d5 Ra1 19.Ba1 cd5 20.Bb5-/+) 18.Rd1 b4-+; B) 17.Rc3=) 16.e4 Bg6 17.Rd1 (17.Bd3 Rdc8=) 17...Nc4 (17...Bf6!?=) 18.Bc4+= bc4 19.h3 Bh5 20.g4 Bg6 21.Qe2 Rab8 22.Ra2 c5 23.d5 Bf6 24.de6 fe6 25.Rc1 Ne5 26.Ne5 Be5 27.Qc4 Bf7 28.Ba1 Bf4=+ 29.Rf1 Rd4 30.Qe2 Bg6 31.Rb2 Rbd8 32.Rb7 Qa3 33.Qb5 Be8 34.Qb6 R8d6 35.Qc7+= Rd7 36.Qc8 Kf8 37.Ne2 Rb7 38.Bd4 Rc7 39.Bg7! Kg7 40.Qe8 Qf3 41.Nf4 Qf4 42.Qe6 c4 43.e5 h6 44.Qd6 Rf7 45.Qc5 Qe4 46.Rc1 Rf4 47.Qc7 Rf7 48.Qc4 Qe5 49.Qc3 Qc3 50.Rc3 Rf6 51.Kg2 Kg6 52.Kg3 h5 53.f3 Kh6 (53...Rb6 54.f4+–) 1–0. Baer,Werner – Woelfelschneider,Peter, TT–10 ETC, 2003.

4.Nf3 e6 5.a3 Bd6 6.Bd3 Ne4 7.Bb2 0-0 8.0-0 Nd7 9.c4 Qf6 (9...dc4 10.Bc4 a5 11.b5=) 10.c5 Be7 11.Qc2 Qg6 12.Nc3 c6 13.Be4 de4 14.Nd2 Nf6 15.Nc4 Qg5 16.Ne2 h5 (16...Rfd8 17.Ng3=) 17.Ng3 Bh7 18.Nd2 Qg6 19.Ne2 Qg5 20.Nc3 Qg4 21.Rfe1 Rfd8 22.Rac1 Bf5 23.h3 Qg5 24.Nce4 Qg6 25.f3 Nd5 26.Kh2 Bh4 27.Re2 Bg3 28.Kg1 Bc7 29.Kh1 h4 30.Qb3 Rac8 31.b5 cb5 32.Qb5 a6 33.Qa4 Rb8 34.Ba1 Qh6 35.Nc4 Qh5 36.Qc2 Qg6 37.Qb1 b5 38.cb6 Nb6 39.Nb6 Rb6 40.Rb2 Rb2 41.Qb2 Rb8 42.Qc3 Bg3 43.Ng3+– Qg3 44.Qc4 Bh3+= 45.Qe2 Bf5 46.e4 Bg6 47.d5 h3=+ 48.de6 fe6 49.Qa2 Kh7-/+ 50.Qe2 Bh5 51.Kg1 Rb3 52.Bc3 Ra3 53.Rc2 a5 54.Rc1 a4 55.Be1 Qg5 56.Bd2 Qg2 57.Qg2 hg2 58.Kg2 Bf3 59.Kf2 Be4 60.Bc3 g5 61.Ke3 Bd5 62.Kd3 Rb3 63.Rg1 a3 64.Rg5 Rb7 65.Rg1 a2 66.Ra1 Kh6 67.Bd4 Rb1 68.Be5 Kg5 69.Bc3 Kf5 70.Kd4 Bb3 71.Ke3 e5 72.Kf3 Bd5 73.Ke2 Ke4 74.Kf2 Bc4 75.Kg2 Kf4 76.Bd2 Kg4 77.Bc3 e4 78.Kf2 Rb3 79.Ke3 Rc3 80.Ke4 Bf7 (80...Bf7 81.Rg1 Rg3-+) 0–1. Jenneborg,Seved – Hlavacek,Ladislav (1885), TE.2004.P.01701, 2004.

4.Nf3 e6 5.Be2 Bb4-/+ 6.c3 Bb1 (6...Bd6 7.Ba3-/+) 7.Rb1 (better is 7.Qa4!? Nbd7 8.Qb4=) 7...Bc3-/+ 8.Nd2 b6 9.0-0 0-0 10.Nf3 (10.Qc2 Bd2 11.Bd2 Nbd7-/+) 10...Ne4 11.Qd3 (11.Qc2 c5-/+) 11...Ba5 (11...c5 12.Ba3 Nd7 13.Rfc1-+) 12.Ne5 (better is 12.Bb2-+) 12...Nd7 (better is 12...c5-+) 13.Bh5?? (better is 13.Nc6 Qf6 14.Na5 ba5 15.Qc2=+) 13...Qf6?? (better is 13...Ne5 14.de5 Nc3-+) 14.Nd7+– Qe7 15.Nf8 Qf8 16.Qa6 Qd8 17.Qe2?? Nc3+/– 18.Qf3 Nb1+= 19.Bf7 Kh8 20.Qh3 Qe7?? 21.Bh5?? Re8?? 22.Be8?? Qe8+/– 23.g4 c5 24.e4 de4 25.f3 cd4= 26.fe4 e5?? (26...e5 27.Qd3 Qc8+–; better is 26...Bd2=). driou – theeagle (1630), net–chess.com, 2005.

4.f4 e6 5.a3 Bd6 6.Nf3 0-0 7.c4 dc4 8.Bc4 a6 9.Nc3 Nbd7 10.0-0 Ne4 11.Ne4 Be4 12.Nd2 Bg6 13.Bb2 Nb6 14.Bb3 Nd5 (14...a5 15.ba5 Ra5 16.Bc2=+) 15.Qe2 (better 15.Bd5!? ed5 16.f5+/-) 15...c6 16.g3 Nf6 17.e4 Nd7?? (better 17...Bc7=) 18.f5+- ef5 19.ef5 Re8 20.Qf3 Nf6 21.fg6 hg6 22.Rae1 a5 23.ba5 (23.Re8 Qe8 24.Nc4 Bc7+-) 23...Qa5 (23...Re1 24.Re1 Qa5 25.Bc3+-) 24.Qd3 (24.Re8 Re8 25.Nc4 Qd8+-) 24...Qc7 (24...Re1 25.Re1 Rd8+-) 25.Re8 Re8 26.Qg6 Re2 (26...Kf8 27.Qg5 Re2+-) 27.Rf6 (27.Rf6 Re1 28.Nf1+-) 1-0. Minister007 (2325) - wisdy (2315), Rated blitz game, lichess.org, 2020.

5.a3 a5 6.Qa4 c6 7.b5 cb5 8.Qb5 (< 8.cb5 Qc8 9.b6 Nfd7-/+) 8...Qd7 9.Qd7 Nbd7 10.Nf3 dc4 11.Bc4 Rc8 12.Nbd2 Be7 13.Bb2 0-0 14.0-0 Nb6 15.Bb3 a4 16.Ba2 Rc2 17.Bc1 Rfc8 18.h3 Nfd5 19.e4 Nc3 20.ef5 Ra2 21.Ra2 Na2 22.Bb2 1–0. cr50 – Snoopy85, ChessWorld.net, 2011.

5.a3 a5 6.b5 a4 7.c5 e5 8.Nc3 ed4 9.ed4 Be7 10.Bd3 Bd3 11.Qd3 0-0 12.Nf3 Ne4 13.0-0 Nc3 14.Qc3 Bf6 15.Bf4 Nd7 (15...Re8 16.Rae1 Re4 17.Bg3+/-) 16.Rfe1 Re8? (better 16...c6!?+/-) 17.c6+- Re1 18.Re1 bc6 19.Qc6 (19.bc6?! Nb6+=) 19...Rc8 20.Qd5 Nf8 (20...h6 21.Re3+-) 21.Qd8 Bd8 (21...Rd8?? 22.Bc7 Rd5 23.b6+-) 22.Rc1 Ne6 23.Be3 (23.Bg3!? Be7+-) 23...Rb8+/- 24.d5 Nf8 25.Rc5 (better 25.Rb1!?+-) 25...Nd7+= 26.Rc4 Rb5 27.g4 Rc5 28.Ra4 Be7 29.Bc5 Nb8 30.Rd4 Bd6 31.Bd6 Nc6 32.a4 Ne5 33.Rc4 c6 34.dc6 h6 35.Bc5 Kf8 Ba3+ 35...f6 36.Rb4 f5 37.c7 Nd7 38.Rb7 1-0. Minister007 (2320) - Lokh_007 (2330), Rated blitz game, lichess.org, 2020.

5.a3 a5 6.b5 Be7 7.f4 (7.cd5 ed5 8.Nf3 Bd6=) 7...h6 8.c5 0-0 9.Nf3 c6 10.b6 Nbd7 11.a4 Ne4 12.Nbd2 Ndf6 13.Qb3 Ng4 14.g3 (14.Be2 Bh4 15.g3 Be7=) 14...h5 (14...Ngf2!? 15.Rg1 Nh3 16.Bh3 Bh3 17.Ne4 de4=) 15.Ne4= Be4 16.Bg2 Nh6 17.0-0 Nf5 18.Nd2 Bg2 19.Kg2 Nh6 20.Qd3 g6 21.Nb3 h4 22.Bd2 Kg7 23.Na5 Qd7 24.Nb3 hg3 25.hg3 Rh8 26.a5 Ng4 27.Rh1 Nf6 28.Rh8 Rh8 29.Rh1 Rh1 30.Kh1 Ne4 31.Kg2 g5 (31...Qc8 32.Bc3+=) 32.Be1 gf4 33.ef4 e5 34.de5 (34.fe5 Qc8+-) 34...Qg4? (34...Nc5 35.Qc3 d4 36.Qd4 Qd4 37.Nd4 Na6+-) 35.a6 ba6 (35...Qc8 36.a7 Kf8+-) 36.b7 (36.Qa6 Qd1 37.Nd2 Qe1 38.Ne4 Qe4 (38...de4?! 39.b7 Qd2 40.Kh3=) 39.Kh2 Qc2 40.Kh3 Bc5=) 1-0. Minister007 (2315) - Kostov_64 (2315), Rated blitz game, lichess.org, 2020.

5.a3 c6 6.Nc3 Bd6 7.f4 (7.c5 Bc7=) 7...h6 (7...dc4 8.Bc4 b5 9.Be2=+) 8.Nf3 Nbd7 9.c5 Bc7 10.Bd3 a6 (10...Ne4 11.Qc2 Nc3 12.Qc3=) 11.0-0 0-0 12.Bb2 Qe7 13.Qc2 Bd3 14.Qd3 Rae8 15.h3 Nh7 16.g4 f6 17.Rae1 e5 (17...f5 18.Re2=) 18.fe5 (18.e4!? f5 19.gf5 de4 20.Ne4 ed4 21.Nd6 (21.Bd4?! Qf7+/-) 21...Bd6 22.Re7 Be7 23.Qc4 Kh8 24.Ne5 (24.Nd4?! Bf6+-) 24...Ne5 25.fe5+-) 18...fe5= 19.e4 de4 (better 19...ed4 20.ed5 Ne5 21.Ne5 Rf1 22.Rf1 Qe5+=) 20.Ne4+/- (20.Re4?! Nhf6 21.Qc4 Qf7 22.Qf7 Rf7=) 20...Qd8 (20...Nhf6 21.de5 Ne4 22.Qc4 Rf7 23.Re4 Nf6+/-) 21.Qc4 (better 21.de5 Rf4 22.Qe3+-) 21...Kh8+= 22.de5 Ne5 23.Ne5 Be5 24.Rf8 Nf8 25.Be5 Re5 26.Kg2 (better 26.Rf1 Qe7 27.Nd6+=) 26...Qe8?? (26...Qe7 27.Qd3=) 27.Re2 (better 27.Nd6 Re1 28.Ne8 Re8 29.Qf7+-) 27...Nd7 (27...Ng6 28.Kf1 Qe7 29.Nd6=) 28.Ng3 Re2 29.Qe2 (worse 29.Ne2 Qe3 30.Nf4 Ne5=+) 29...Qe2 30.Ne2 Kg8 31.Kf3 Kf7 32.Ke4 Ke6 33.Nf4 Kf6 34.Nd3 Kg5 35.Ne5 (35.Kf3!?+=) 35...Ne5= 36.Ke5 Kh4 37.Kd6 Kh3 38.Kc7 Kg4 39.Kb7 h5 40.Kc6 (40.Ka6!? h4 41.b5 h3 42.bc6 h2+-) 40...h4 41.Kb6 h3 42.c6 h2 43.c7 h1Q 44.c8Q Kg5 45.Qc5 Kh6 46.Qd6 Kh5 47.a4 g5 48.Ka6 Qa8 49.Kb5 g4 (49...Qe8 50.Ka5 Qa8 51.Kb6 Qa4 52.b5=) 50.Qe5 Kh4 51.Qf6 Kh3 52.a5 g3 53.a6 (53.Qe6 Kh4+/-) 53...g2 (53...Qd5!? 54.Kb6 g2 55.Qh6 Kg3 56.Qg7 Kf2 57.Qb2 Kf3 58.Qf6 Ke2 59.Qe7 Kd3=) 54.Qh6 Kg3 55.Qg5 Kh2 56.Qh4 Kg1 57.Ka5 (57.Qe1 Kh2 58.Qe5 Kh3 59.Qf5 Kg3 60.Qd3 Kf2 61.Qd4 Kf1 62.Qf6 Ke2 63.Qe5 Kf1 64.Qf4 Ke2 65.Qc4 Kf3 66.Qf7 Ke3 67.Qe7 Kf2 68.Qc5 Kf1 69.Qf5 Ke1+=) 57...Kf1 (better 57...Qd5!? 58.b5 Kf1 59.Qf4 Ke2 60.Qg4 Kf2 61.Qh4 Kf1 62.Qf6 Ke2 63.Qe7 Kf2 64.Qf8 Ke2 65.Qe7 Kf2 66.Qf6 Ke2 67.Qe7=) 58.Qf4 Ke1 59.Qg3 Kf1 60.Qd3 Kf2 61.Qd4 Kf1 62.Qa1 Kf2 63.Qf6 Ke1 64.Qe5 Kf2 65.Qf4 Ke1 66.Qg3 Kf1 67.Qd3 Ke1 68.Qg3 ½-½. Minister007 (2305) - gjakerele (2310), Rated blitz game, lichess.org, 2020.

5.a3 Nbd7 6.f4 c6 7.Nf3 Be7 8.c5 a6 9.Nc3 0-0 10.Bd2 Ne4 11.Ne4 Be4 12.Be2 f5 13.0-0 Bf6 14.Ne5 Be5 (14...Ne5 15.fe5 Bh4 16.g3=) 15.de5 g5 16.Bc3 Kh8 17.Bf3 gf4 18.ef4 Qh4 19.g3 Rg8 20.Qe1 (20.Be4 fe4 21.Qe1 Rg7+=) 20...Bf3 (better 20...Qf4! 21.Be4 Qe4=+) 21.Rf3+= Qh3 22.Bd4 Rg4 23.Qf1 Qh5 24.Qf2 Rag8 25.Re1 Nf8 26.Kf1 Qh3 27.Ke2 h5 28.a4 Ng6 Black intends h4 29.b5 ab5 (worse 29...cb5 30.ab5 ab5 31.Rb1+=) 30.ab5 cb5 31.Rb1 h4 32.Rb5 Rg7 33.Rb6 Re7 (33...hg3 34.hg3 Nf8 35.Rbb3+=) 34.Be3 Kg7 35.gh4 Qh4 36.Qh4 Rh4 37.h3 Kf7 38.Kf2 Rc7 39.Kg3 Rh8 40.Rf2 Rg8 41.Kh2 Nh4 42.Bd4 Ke7 43.Rb3 Kd7 44.Rfb2 Kc8 45.Rg3 Rcg7 46.Rg7 Rg7 47.Be3 (47.Bf2 Nf3 48.Kh1 Kc7=) 47...Nf3 48.Kh1 Kc7 (48...d4!? 49.Bf2 d3-/+) 49.Rg2= Rh7 50.Rg3 Ne1 51.Bd2 Nc2 52.Kg2 Nd4 53.Ra3 Ne2 (53...Kc6 54.Rc3=+) 54.Ra8 (54.Rd3 Kc6 55.Kf2 Nf4 56.Bf4 Kc5=) 54...Nd4 (54...Rg7 55.Kf2 Ng3 56.Be3 Ne4 57.Ke2 Rg2 58.Kd3-/+) 55.Re8 Kc6 56.Be3 Kc5?? (56...Kd7 57.Ra8 Nc2 58.Bf2=) 57.Re6?? (better 57.Rc8 Kb4 58.Bd4+-) 57...b5 58.Bd4 Kd4 59.Rb6 Kc4 60.Rd6 (60.Rc6!? Kd3 61.Rc5=+) 60...d4 61.e6 b4 (61...Re7!?-/+) 62.Rd7=+ Rh8 63.e7 Re8 64.Kf3 b3 65.h4 b2 66.Rc7 (66.Rc7 Kb3 67.Rb7 Kc2 68.Rc7 Kb1 69.Ke2-+). Minister007 (2415) - Doubleb17 (2440), Rated blitz game, lichess.org, 2020.

5.a3 Be7 6.Nc3 0-0 7.f4 a5 8.b5 dc4 9.Bc4 c5 10.Nf3 cd4 11.Nd4 Bg6 12.0-0 Nbd7 13.Be6 fe6 14.Ne6 Qb6 15.Nf8 Bf8 16.g4 (better 16.Nd5!? Qc5 17.f5=+) 16...Rc8-/+ 17.Nd5 (better 17.Qd2 Nc5 18.Qd4-/+) 17...Qd6 (better 17...Qb5 18.Nf6 Nf6-+) 18.Nf6= Nf6 (worse 18...gf6 19.Qd6 Bd6 20.Rd1+=) 19.Qd6 Bd6 20.f5 (better 20.h3!?=) 20...Bf7-/+ 21.h3 (better 21.Rf2!?-/+) 21...Ne4-+ 22.Bb2?? (22.Rf4 Bf4 23.ef4-+) 22...Rc2 23.Bd4 (23.Rf4 Bf4 24.ef4-+) 23…Bh2 (23...Bh2 24.Kh1 Ng3) 0-1. Minister007 (2325) - Davigator (2300), Rated blitz game, lichess.org, 2020.

5.a3 Be7 6.Nc3 0-0 7.f4 a5 8.b5 c5 9.bc6 bc6 10.c5 Nbd7 11.Nf3 Ne4 12.Ne4 Be4 13.a4 f6 14.Bd3 Bd3 15.Qd3 e5 16.Qf5 Qc8 17.Qe6 Rf7 18.0-0 e4 19.Nh4 Nf8 (19...g6!?=) 20.Qc8+= Rc8 21.Rb1 (21.Nf5 Rb8+=) 21...Bd8 (21...f5 22.g3=+) 22.g4 g6 23.Bd2 (23.f5!?=) 23...f5-/+ 24.g5 h6! 25.Ng2 (25.gh6 Bh4 Pinning (25...Bh4 Deflection)) 25...hg5 26.fg5 Bg5 27.Rb6 Ne6 28.Ba5 Bd8 (better 28...Ra7!? 29.Be1 Ra4-+) 29.Ra6=+ Ba5 30.Ra5 g5 31.Rb1 f4 32.Kf2? (32.ef4 Nd4 33.fg5 Nf3 34.Kh1 Rh7-+) 32...f3 (better 32...fe3 33.Ke3 Rf3 34.Ke2 Nd4 35.Kd1 Rd3 36.Kc1 Rf8-+) 33.Ne1-/+ Rh7 34.Kg3 (34.Kg1 Rf8 35.Nc2 f2 36.Kg2 Rb7-+) 34...g4! 35.Nc2?? (35.Kg4 Rh2 Deflection (35...f2 Passed pawn)) 35...Rh3-+ 36.Kg4 Rh2 37.Nb4 (37.Ne1-+) 37...Rf8 (better 37...Kf7 38.Nd5 cd5 39.Ra8 Ra8 40.Rb7 Kf6 41.Rf7 Kf7 42.Kf5 Rh5 43.Kg4 Rg5 44.Kh3 Rh8) 38.Nc6 Rg2 39.Kh3 (39.Kh4 Rf6 40.Ne7 Kh7 41.Ng6 Rfg6 42.Rb7 Ng7 43.Rg7 Rg7 44.Kh3 R2g3 45.Kh4 Rg1 46.c6 Rh1) 39...Ng5 (39...Rf6 40.Rb8 Kh7 41.Rb7 Ng7 42.Rg7 Rg7 43.Ne5 Rh6) 40.Kh4 f2 (40...Kg7 41.Ra7 Kf6 42.Rh7 Nh7 43.Rb7 Rh8 44.Rf7 Kf7 45.Ne5 Ke6 46.Nf7 Kf7 47.a5 Nf6) 41.Rf1 (41.Ne5 Rg1 42.Rab5 Nf3 43.Nf3 ef3-+) 41...Nf3 (41...Rg1 42.Ra7 Rf1 43.Ne7 Kg7 44.Nd5 Kh8 45.Kg5 Rg1 46.Kh6 Rh1 47.Kg6 f1Q 48.Rh7 Rh7 49.Nf4 Qg1 50.Ng2 Qg2) 42.Kh3 Rg1?? (better 42...Rh2 43.Kg4 Rh7-+) 43.Rf2= Ng5?? (better 43...Rf6 44.Ra8 Kg7 45.Ra7 Kh8 46.Ra8 Kg7 47.Ra7 Kh8 48.Ra8 Kg7=) 44.Kh2+- Rf2 45.Kg1 Re2 (45...Nh3 46.Kh1 Ng5 47.Ne5+-) 46.Ne7 Kf7 47.Nd5 Nf3 48.Kf1 Re1 (48...Rd2 49.Ra7 Ke6 50.Nf4 Kf6 51.Ne2 Nh2 52.Ke1 Nf3 53.Kf2+-) 49.Kf2 Ra1 (49...Rc1 50.Ra7 Ke6 51.Nc7 Kf5 52.Ne8+-) 50.Kg3 (50.Nc3!? Nd2 51.Ke2 Nc4+-) 50...Ke6 51.Kf4 (better 51.Nc7 Kf7 52.Nb5+-) 51...Kd5+/- 52.c6 Kc6 53.Ke4 Nd2 54.Ke5?? (better 54.Kf4+/-) 54...Nb3 (better 54...Nc4 55.Kf4 Na5-+) 55.Ra6 (better 55.d5!? Kc7 56.d6 Kc6 57.Ra6 Kd7 58.Ra7 Kd8 59.e4+-) 55...Kb7+/- 56.Rf6 Ra4 57.d5 Ra5 (57...Nd2 58.Kf5+=) 58.e4 (58.Kd6 Ra8+/-) 58...Nc5 (58...Ra4 59.Kf5 Nd4 60.Kg5+=) 59.Rf7 Kc8 60.Kd6 (60.Rf8 Kc7 61.Kd4 Nd7=) 60...Nb7 (60...Ne4!? 61.Ke5 Nc3=) 61.Ke7+/- Nd8? (61...Ra4!? 62.e5 Rd4+=) 62.Rf8 Ra7 63.Kd6 Rd7 64.Ke5 Rb7 65.Kd4 Rb2 66.Ke5 Rb7 67.Kd6 Rc7 (67...Rd7 68.Kc5 Rg7+/-) 68.e5+/- Rd7 69.Kc5 Rh7? (69...Rc7 70.Kd4 Kd7 71.Rh8+/-) 70.Kd4 (70.e6 Re7 71.Kd6+-) 70...Rh6?? (better 70...Kd7+/-) 71.e6+- Kc7 (71...Kc7 72.e7 Nc6 73.dc6 Re6+-). Minister007 (2330) - HannHagen (2325), Rated blitz game, lichess.org, 2020.

5.a3 Be7 6.Nc3 0-0 7.f4 a5 8.b5 c6 9.c5 cb5 10.Bb5 Nc6 11.Nf3 Ne4 12.Bb2 f6 13.0-0 Bg4 14.h3 Bh5 15.Qd3 Nc3 16.Bc3 Bg6 17.Qd2 Be4 18.Bd3 Bd3 (18...b6!? 19.cb6 Qb6=) 19.Qd3+= b6 20.cb6 Qb6 21.Rfb1 Qa7 22.Rb5 Rfb8 23.a4 Nb4 24.Bb4 Bb4 25.f5 Rb5 26.ab5 Qb6 27.fe6 Qe6 28.Nh4 Re8 (28...Rb8 29.Nf5-/+) 29.Kf2 (29.Rc1 Rb8=+) 29...Rb8 30.Nf5 g6 31.Nh6 Kg7 32.Ng4 Qb6 33.Rc1 Qb5?? (better 33...Be7-/+) 34.Rc7 Kf8 35.Qb5 Rb5 36.Nf6 h5 37.Rd7 Attacks the isolani on d5 37...a4 38.Nd5 a3 (better 38...Ba5!? 39.e4 a3=) 39.Nb4+/- Rb4 40.Ra7 Rb3 41.g4 hg4 42.hg4 Kg8 43.Kf3 Kf8 44.Kf4 Kg8 45.e4 Kf8 46.d5 Ke8 (46...Rd3 47.Ke5 Re3 48.Kd4+-) 47.e5 Rb5 48.d6 (48.d6 Rd5 49.Ra3+-) 1-0. Minister007 (2335) - jdac23 (2355), Rated blitz game, lichess.org, 2020.

6.Bb2 c6 7.Nc3 Bd6 8.Nf3 0-0 9.Be2 Ne4 (9...dc4 10.Nd2 Bc7 11.Nc4+=) 10.Rc1 a5 11.c5 ab4 12.ab4 Bc7 13.Ra1 Qf6 14.0-0 Qh6 15.b5 Ra1 16.Qa1? (better is 16.Ba1 Ng5 17.g3=) 16...Nd2!-+ 17.g3 (17.Nd2 Qh2 Mate attack) 17...Nf1 18.Bf1 Bg4 19.Bg2 e5 (19...Qf6 20.Qa7 Bf3 21.Bf3 Qf3 22.Qb7 Bg3 23.hg3-+) 20.bc6 (better is 20.Ne5!? Be5 21.de5 Nc5 22.Qa7-/+) 20...bc6-+ 21.Qa7 Bb8 22.Qb7 e4 23.Nd2 Qe6 24.Ba3 h5 (24...Nf6 25.Bb4-+) 25.Na2 (25.Nce4 de4 26.Be4-+) 25...Be2 (25...Nf6 26.Nb4 Rc8 27.Bf1-+) 26.Nc3? (better is 26.Nb4!?-/+) 26...Bd3-+ 27.h4 Nf6 28.Na2 Qf5 29.Nf1 Bf1 30.Bf1 Bg3! 31.fg3 Qf3 32.Bc1 Qg3 33.Bg2 Ng4 34.Qb2 Qh2 35.Kf1 Qh4 36.Qe2 Re8 37.Qe1 Nh2 38.Ke2 Qg4 39.Kd2 Qg2 40.Qe2 Nf3 41.Kd1 Qe2 42.Ke2 h4 43.Kf2 h3 44.Nb4 h2 45.Kg2 Re6 46.Bd2 h1Q! 47.Kh1 Rg6 (47...Rg6 48.Nc6 Rg1) 0–1. Bezukladov,OD – Najer,Evgeniy, It (open), XI, Moscow (Russia), 1995. (=1.d4 Nf6 2.b4 d5 3.e3 Bf5)

5.c5 a5 6.b5 Nbd7 7.f4 (7.Ne2!?=) 7...Ne4=+ 8.Nf3 b6 9.c6 Bb4 10.Nbd2 (10.Bd2!? Ndf6 11.Bb4 ab4 12.Qb3=+) 10...Ndf6-/+ 11.a3 (11.Qb3!?-/+) 11...Bc3-+ 12.Ra2 Ng4 13.Qe2? (13.Qa4 Ne3 14.Ke2 Ng4-+ (worse 14...Nf1 15.Rf1 Qd6 16.Ne5-+)) 13...a4 (13...Nef2 14.Ne5 Nh1 15.Ng4-+) 14.g3? (better 14.Rg1-+) 14...Ba5 15.Rc2 (15.Rb2 Nc3 16.Qg2 Ne3-+) 15...Ng3! 16.hg3 Bc2 17.Ne5 Ne5 18.de5 Be4 19.Rh2 d4 (19...Qe7 20.Kd1 Bg6 21.Bb2-+) 20.Kf2? (20.Qc4 de3 21.Qe4 Bd2 22.Bd2 ed2 23.Rd2 Qe7-+) 20...de3 (better 20...d3!? 21.Qg4 Bg6 22.Qd1-+) 21.Qe3 Bf5 22.Nc4 Qd1 23.Na5 Ra5 24.Be2 Qc2 25.Bd2 Ra8 26.g4 (26.Qc3 Qa2-+) 26...Rd8 27.Bb4 (27.gf5 Rd2 28.fe6 fe6 29.Kf3-+) 27...Bg4 28.Kg3 Be2 29.Re2 (29.Qe2 Rd3 30.Kf2 Qc4-+) 29...Rd3 (better 29...Qg6 30.Kh2 Rd3-+) 30.Rc2 Re3 31.Kg4 f6 32.Rd2 (32.ef6 gf6 33.f5 e5-+) 32...h5 (32...f5 33.Kh4 h6 34.Rd7-+) 33.Kh4 Re4 (33...Rg8 34.Rd7 g5 35.fg5 fg5 36.Kh5-+) 34.ef6 (34.Rd7 Rh7 35.ef6 Rf4 36.Kh3 Rf3 37.Kg2 Rf6 38.Rc7 Rg6 39.Kh3+=) 34...Rf4 35.Kg5 (35.Kh3 Rf6 (35...gf6?! 36.Rd7-+) 36.Rd7 Rf7-+) 35...Rf5 (35...Rg4) 36.Kg6 (36.Kh4 Rf6 37.Re2 Rf4 38.Kg3 Rg4 39.Kh3 Kf7-+) 36...Rf6 37.Kg7 Rhh6 38.Rd7 (38.Rg2 h4 39.Bc3-+) 38…Rfg6 0-1. Minister007 (2360) - Petelecovsky (2370), Rated blitz game, lichess.org, 2020.

5.c5 Be7 6.Nc3 0-0 7.a4 Re8 8.Nf3 Nbd7 9.Be2 Ne4 10.Bb2 Ndf6 11.Ne5 c6 12.Ne4 Ne4 13.f3 Nf6 14.g4 Bg6 15.h4 h5 16.Ng6 fg6 17.Qb1 Qc7? 18.g5+– Qg3 19.Kd2 Nd7 20.Qg6 Bf8 21.Rag1 Qf2 22.Rf1 Qg2 23.Rhg1 Qh2 24.f4 a5 25.ba5 Re7 26.Kd1 Rf7 27.Qe6 g6 28.f5 (28...Re8 29.Qe8 gf5 30.Qe6+–) 1–0. Hawk,June – Patterson,Stephen J, CL6–1999.12 IECC email, 1999.

5.c5 Be7 6.Bd3 0-0+=. Schiffler – Starke, Riesa, 1952.

4.c4 e6 5.c5 b6 6.Bb2 bc5 7.dc5 Be7 8.Qa4 Qd7 9.Bb5 Nc6?? (better is 9...c6 10.Be2 a5=+) 10.Bc6+– 1–0. Nimylowych,William – Benjamin,H, East Lansing–ch MI op–B, 1991.

4.Bd3 Bd3 5.Qd3 e6 6.Qb5 Nc6 7.Nf3 (7.a3 Qc8=+) 7...Qd7 (7...a6!? 8.Qd3 Bb4 9.Nbd2 0-0-/+) 8.a3=+ Ne4 (8...a6 9.Qd3=+ (9.Qb7? Ra7 10.Ne5 Rb7 11.Nd7 Kd7-+)) 9.0-0 (better is 9.Qb7!? Rb8 10.Qa6+=) 9...Rb8 (9...a5 10.Qb7 Rb8 11.Qa6 ab4 12.Nfd2=) 10.Qe2 (10.Qe2 Bd6 11.c4=). chessH – bayonet attack 1, ChessWorld.net, 2002.

4.Be2 Be2 5.Qe2 c6 6.Bb2 Nbd7 7.Nf3 e6 8.a3 Bd6 9.Nbd2 0-0 10.h3 a5 11.c3 Qe7 12.0-0 e5 13.de5 Ne5 14.Rad1 ab4 15.ab4 Ra2 16.Rb1 Rfa8 17.Nd4 Ned7 18.Nf5 Qe5 19.Nd6 Qd6 20.Nf3 Ne4 (20...Ne4 21.Ra1 Nb6-/+) 0–1. rawat (2180) – lovecraft (2100), net–chess.com, 2011.

4.Be2 Be2 5.Qe2 Nbd7 6.a3 Nb6 (6...a5 7.ba5 e5 8.Nf3+=) 7.Nd2 (7.Nf3 e6=) 7...e6 8.Ngf3 Bd6 9.c4 dc4 10.Nc4 Nc4 11.Qc4 0-0 12.0-0 Re8 (12...Qe7 13.Qc2=) 13.Bb2 (13.Qc2 h6+=) 13...c6 14.b5 Rc8 15.Rac1 cb5 (15...Qb6 16.a4+=) 16.Qb5= Qe7 17.Qd3 Nd7 18.Qb3 Nb6 19.Rc8 (19.g3 Qd7=) 19...Rc8+= 20.Rc1 Rc1 21.Bc1 Qc7 22.Bb2 (22.Qb1 Qc4+=) 22...Qc4-/+ 23.Nd2 (23.Qd1 Qa2 24.Bc1 a5-/+) 23...Qb3-+ 24.Nb3 Nc4 25.Bc1 Ba3 26.Ba3 Na3 27.Kf1 Kf8 28.Ke2 Ke7 29.Kd3 Kd6 30.f4 (30.g4 b5-+) 30...f5 31.Na5 (better is 31.Nc5 b6 32.Na4-+) 31...b6 32.Nb3 a5 33.e4 (33.h3 Kd5-+) 33...fe4 34.Ke4 a4 35.Nd2 b5 (35...Nc2 36.Kd3 Ne1 37.Kc4 Ng2 38.Kb4-+) 36.g4?? (36.Kd3-+) 36...Nc4 (36...Nc4 37.Kd3 Nd2 38.Kd2 b4-+) 0–1. Zhukov,Vladimir (1930) – Semenov,Nikolai (2090), Memorial E. Sinitsin, 2010. (=1.d4 d5 2.e3 Nf6 3.b4 Bg4)

4.Be2 Be2 5.Ne2 e6 6.a3 Bd6 7.f4 c6 8.Nd2 a5 9.Rb1 ab4 10.ab4 Nbd7 11.Nf3 Ne4 12.0-0 0-0 13.Qd3 b5 14.Ne5 Be5 15.de5 Nb6 16.Nd4 Qd7 17.g4 (17.Rd1!?-/+) 17...Nc4-+ 18.h3 Ra2 19.Ne2 Rfa8 20.Nc3 Nc3 21.Qc3 Qc7 22.Rf2 Qa7 23.Qd4 Qd4 (23...Qe7!?-/+) 24.ed4=+ Ra1 25.Ra1 Ra1 26.Rf1 Rb1 27.c3 Kf8 28.f5 Ke7?? (28...ef5 29.gf5 Rb3 30.Rf3=) 29.Kg2 (better 29.Bg5 f6 30.ef6 (worse 30.Rb1 fg5 31.Ra1 ef5+-) 30...gf6 31.Rb1 fg5 32.Re1+-) 29...Rb3= 30.Rf3 ef5 31.gf5 f6 32.Bf4 Rb2 33.Kg3 (33.Kf1 g6 34.fg6 Rb1 35.Kf2 hg6 36.ef6 Kf6 37.Bh6 Ke6=) 33...Rb1 (33...Re2 34.Rf2 Rf2 35.Kf2=) 34.Rf2 Rb3 35.Rf3 g6 36.fg6 hg6 37.ef6 Kf6 38.Be5 Ke7 39.Bh8? (39.Kg4 Rb1=) 39...Kd7 (better 39...Nd2 40.Re3 Ne4 41.Kf4 Rc3 42.Rc3 Nc3-+) 40.Kg4= Nd6 41.Kg5 Ne4 42.Kg6 Rc3 (42...Nc3? 43.h4+-) 43.Rc3 Nc3 44.h4 Ke8?? (44...Ne2 45.h5 Nf4 46.Kf5 Nh5+-) 45.h5 Kf8 (45...c5 46.h6 (46.bc5?? b4-+) 46...cd4 47.h7 Nd1 48.Be5 Nc3 49.h8Q Ke7 50.Qf6 Kd7 51.Qd6 Ke8 52.Bf6 d3 53.Qe7) 46.Bg7 (46.Bg7 Ke8 47.h6 Kd7 48.h7 Ne4 49.h8Q Ng5 50.Kg5 c5 51.Bf6 cd4 52.Qd8 Kc6 53.Be5 Kb7 54.Qc7 Ka6 55.Qc8 Kb6 56.Bd4) 1-0. Minister007 (2320) - vedmak_70 (2335), Rated blitz game, lichess.org, 2021.

4.f3 Bf5 5.c4 dc4 6.Bc4 e6 7.a3 Bd6 (7...c6!?=) 8.e4+/- Ne4 9.fe4 Qh4 10.g3?? (better 10.Kf1 Be4 11.Nc3+/-) 10...Qe4-+ 11.Kf2 (11.Be3 Qh1 (11...Qe3?! 12.Ne2-+) 12.Qd2 Nd7-+) 11...Qh1 12.Nc3 (12.Qf3 Qh2 13.Kf1 Bg3-+) 12...Qh2 13.Kf1 Bg3 14.Qf3 Nc6 15.Be3 0-0-0 16.Ra2 Bh3 17.Nh3 Qh3 18.Rg2 Qh1 19.Ke2 (19.Bg1 Bh4 20.d5-+) 19...Qe1 20.Kd3 Ne5 (20...Ne5 21.Kc2 Nf3-+) 0-1. Minister007 (2310) - Sesla (2330), Rated blitz game, lichess.org, 2021. (=1.d4 D00: 1 d4 d5: Unusual lines 1...d5 2.b4 Nf6 3.e3)

4.f3 Bf5 5.f4 h6 6.Nf3 Nbd7 7.a3 e6 8.c4 c6 9.Nc3 Ne4 10.Ne4 Be4 11.c5 g5 12.Bd3 Bd3 13.Qd3 gf4 14.ef4 Bg7 15.0-0 Nf6 16.f5 Ne4 17.fe6 fe6 18.Nd2 (18.Bf4 Rf8 19.Be5 Qd7+/-) 18...Qh4 19.Ne4 de4 20.Qc4 Ke7 (better 20...Qg4!?=) 21.Bf4+/- Rad8?? (21...Qh5 22.Rad1 Qd5 23.Qc3+/-) 22.Rad1 (better 22.Bd6 Rd6 23.cd6 Kd8 24.Rf7+-) 22...Rd5+= 23.g3 (23.Bd6!? Ke8 24.Qc2+/-) 23...Qh5= 24.Be3 Rhd8 25.Kg2 e5 26.h3? (better 26.Qc2 ed4 27.Qe4 Kd7 28.Bf2=+) 26...ed4-+ 27.g4 Qg6 28.Bg1?! (28.Bf2 Kd7-+) 28...e3 (better 28...h5!? 29.Qe2 hg4 30.h4-+) 29.Qd3 Qd3 30.Rd3 Rf8 (30...b6 31.cb6 ab6 32.Rc1-+) 31.Rf8 Kf8 32.Kf3 (32.Bh2 Ke7-+) 32...Ke7 33.Bh2 Ke6 34.Bf4 h5 35.a4 hg4 36.hg4 Be5 37.Bh6 Rd7 38.Ke4 (38.Rd1 Rh7 39.Rh1 Kd5-+) 38...Rf7 (better 38...Rg7 39.Rd1 Rg4 40.Kd3 Rg2-+) 39.b5?? (39.Rd1 Rf2-+) 39...a6 (39...e2 40.Bd2 e1Q 41.Re3 Qb1 42.Rd3 Qh1 43.Rf3 Qf3) 40.ba6 (40.Rd1 Rf2-+) 40...ba6 (40...e2 41.Rd1 ed1Q 42.ab7 Qf3) 41.Rb3 (41.Rd1 Rf6 42.Rh1 Rg6-+) 41...e2 42.Bd2 Rf4!! 43.Kd3 (43.Bf4) 43...Rf3 44.Kc2 Rb3 45.Kb3 Bg3 (better 45...Kd5!? 46.g5-+) 46.Kc4 e1Q 47.Be1 Be1 48.Kd4 Bf2 49.Kc4 a5 50.g5 Kf5 51.Kd3 Bc5 52.Kc4 Bb4 53.Kd4 c5 (53...Kg5 54.Ke4 Kf6 55.Kf4-+) 54.Kd5 Kg5 55.Kc4 Kf4 56.Kd5 Ke3 57.Kc4 Kd2 58.Kb5 Kc2 59.Kc4 Kb2 60.Kb5 Ka3 (60...Ka3 61.Kc4 Ka4-+) 0-1. Minister007 (2405) - oldmisio (2375), Rated blitz game, lichess.org, 2020.

4.f3 Bh5 5.Bd3 e6 6.a3 Nbd7 7.Ne2 c6 8.0-0 a5 9.b5 c5 10.c3 Bg6 11.a4 Qc7 12.Ba3 Bd6 13.f4 Ne4 14.Be4 Be4 15.Nd2 Nf6 16.Ne4 Ne4 17.Qd3 Rc8 18.Ng3 (18.c4 0-0=) 18...f5 (18...Ng3!? 19.hg3 0-0-/+) 19.Ne4= fe4 20.Qe2 0-0 21.Rfd1 cd4 22.cd4 Ba3 23.Ra3 Qd6 24.Ra2 Rc4 25.Qh5 g6 26.Qe5 Qe5 27.de5 Rfc8 28.Rdd2 Rc1 29.Kf2 R8c4 30.g4 Kf7 31.f5 (31.Ra3!?=+) 31...gf5-/+ 32.gf5 ef5 33.Rd5 Ke6 34.Rd6 Ke5 35.Rb6 (35.Rad2 Rc5-/+) 35...R1c2 36.Rc2 Rc2 37.Kg3 (37.Ke1!? Rc1 38.Kd2-/+) 37...Re2-+ 38.Rb7 Re3 39.Kf2 Rb3 40.Rh7 Rb2 41.Kg3 f4 42.Kg4 e3 (42...Rg2 43.Kh3 Ra2 44.Rh5 Kd6 45.Rh6 Kd7 46.Rh7 Ke6 47.Rh6 Kf5 48.Rh5 Kg6 49.Rc5 Ra4 50.Kg4-+) 43.Re7 Kd4?? (43...Kd6 44.Re8 Rb4-/+ (worse 44...Rh2 45.Kf4 Rh4 46.Ke3=)) 44.Kf4 Rh2 45.Rd7 (better 45.Re3 Kd5 46.Re5 Kd6 47.Re4+-) 45...Kc5= 46.Ke3 Rh4 47.Rc7 Kb6 48.Rc6 Kb7 49.Kd3 Ra4 50.Kc3 Rb4 51.Rc5 Kb6 52.Rd5 Rb5 53.Rb5 Kb5 54.Kb3 a4 55.Ka3 Ka5 56.Ka2 Kb4 0-1. Minister007 (2300) - HHe1976 (2355), Rated blitz game, lichess.org, 2020.

4.a3 Bg7 5.Nc3 0-0 (5...a5 6.b5=) 6.h3 (6.Nf3 Nbd7=) 6...Nc6 (6...Nbd7 7.Nf3=) 7.Nf3= Bf5 (7...Re8 8.Bd3=) 8.b5 (8.g4 Be4=) 8...Na5 9.Bd3 (9.Bd2 c5=) 9...Nc4 (9...Bd3 10.Qd3 c6 11.bc6 Nc6 12.Rb1+=) 10.Bf5 gf5 11.0-0 (11.Nd2 Nd2 12.Bd2 a6=) 11...Ne4 (11...a6 12.ba6 Ra6 13.Rb1=) 12.Ne4 fe4 13.Nd2 Nd2 14.Qd2 (14.Bd2 a6 15.ba6 Ra6=) 14...e5 (14...a6 15.ba6 Ra6 16.Rb1=) 15.Bb2 ed4 (15...Qg5 16.Rad1=) 16.Bd4+= Qg5 (16...Bd4 17.Qd4 a6 18.ba6 Ra6 19.Rfb1=) 17.a4 (17.Bg7!? Kg7 18.Qc3 f6 19.Qc7 Rf7 20.Qc5+/–) 17...Bd4 (17...Rfd8 18.Bg7 Qg7 19.a5=) 18.Qd4 Rad8? (better is 18...Rfd8!?=) 19.Qa7+/– h5? (better is 19...Rb8+/–) 20.Qb7+– Kh7 (20...Rd7 21.Qc6 Rfd8 22.a5+–) 21.Qc7 Rc8 22.Qd6 (22.Qg3 Qg3 23.fg3 Rc2+–) 22...Rfd8 (22...Rg8 23.Qh2+–) 23.Qf4 (23.Qg3 Qg3 24.fg3 Rc2+–) 23...Qf4 24.ef4 Rc2 25.b6 Rb2 (25...Kg6 26.a5 Rb2 27.Rfb1 Rb1 28.Rb1+–) 26.Rab1 (26.Rfb1 Rd2 27.b7 e3+–) 26...Ra2 (26...Rc2 27.a5 d4 28.b7+–) 27.Rb4 (27.b7 Ra4 28.Rfc1 Ra7+–) 27...Kg6 (27...d4 28.Rd1 e3 29.fe3+–) 28.b7 Rb8 29.Rc1 (29.Rd1 f6+–) 29...Kf5 (29...f6 30.g3+–) 30.g3 h4 31.Rc8 (31.Rc8 Ra4 32.Ra4 (32.Rb8?! Rb4 33.Rd8 Rb7 34.Rd5 Kf6+/–) 32...Rb7 33.gh4 Kf4 34.Rc5+–) 1–0. pillsbury – gbsrao, net–chess.com, 2017.

4.a3 Bg7 5.c4 a5 6.b5 c5 7.bc6 Nc6 8.Nc3 0-0 9.Bd2 (9.Rb1!?=) 9...e5=+ 10.cd5 Nd5 11.Nd5 Qd5 12.de5 Ne5 13.Rc1 Rd8 14.Nf3 Nf3 15.gf3 Bf5 (15...Qd6 16.a4-+) 16.Be2 (16.Bc4!? Qd6 17.e4-/+) 16...Bb2 17.Rc7 (better 17.e4 Qa2 18.Rc2-+) 17...Bh3?? (17...Qe5 18.Qb3 Qc7 19.Qb2-+) 18.Rg1?? (18.Bc4 Qd6 A) 19.Rb7?? Bc3 (19...Qa3?! 20.Bf7 Kf8 21.Qc2=) 20.e4 Bd2 21.Ke2 Be6-+; B) 19.Rf7=+) 18...Ba3 (better 18...Qe5 19.Qc2 Qh2-+ (19...Ba3?! 20.f4 Qa1 21.Bd1-/+)) 19.e4?? (19.Bc4 Qe5 20.Rf7 Be6 21.Be6 Qe6-+) 19...Qd4 (19...Qe5 20.Rc3 Qh2 21.Rf1-+) 20.Rb7?? (20.Rc4 Qf6 21.Qc2 Bb4 22.Rb4 ab4-+) 20...Bb4 (better 20...Bc5 21.Be3 Qc3 22.Bd2 Rd2 23.Qd2 Bf2 24.Kd1 Qa1 25.Qc1 Qd4 26.Kc2 Bg1-+) 21.Bb4 ab4 22.Qd4 Rd4 23.Bd1 (23.Bf1 Bc8 24.Rb6 Rd8-+) 23...Ra2 (23...Rd1 24.Kd1 Ra1 25.Ke2 Rg1 26.Rb4-+) 24.Rb5? (better 24.Rc7-+) 24...Be6 25.f4 (25.Rc5 Ra1 26.Ke2 b3 27.Bb3 Rg1 28.Be6 fe6 29.Rc8 Kg7-+) 25...Kg7 (better 25...Re4!? 26.Kf1 Bh3 27.Rg2 Rf4 28.Be2 Ra1 29.Bd1 Rd1 30.Ke2-+) 26.f5 (26.f3 Rd3 27.Rb4 Re3 28.Be2 Ree2 29.Kd1-+) 26...Bc4 27.Rb4 (27.f6 Kh6 28.Rg4 Bb5 29.Rh4 Kg5 30.Rg4 Kh5 31.Rf4 Rd1 32.Kd1 Be2 33.Kc1-+) 27...Ra1 (27...Re4 28.Be2 Ree2 29.Kf1 Rf2 30.Ke1 Rfe2 31.Kd1 Ra1 32.Rb1 Rb1) 28.Rc4-+ Rc4 (better 28...Rdd1 29.Ke2 Rg1 30.fg6 Ra2 31.Ke3 hg6-+) 29.Kd2 Rd4 30.Ke2 Re4 31.Kd3 Rf4 32.fg6 hg6 33.Rf1 Rh4 34.Be2 Rf1 35.Bf1 Rh2 36.Ke3 f5 37.f3 Kf6 38.Bc4 g5 39.f4 (39.Bb5 Ke5-+) 39...Rh3 (better 39...g4!? 40.Bg8-+) 40.Kf2 g4 41.Be2 (41.Bd5-+) 41...Ke6 42.Kg2 Kd5 43.Bd1 Rc3 0-1. Minister007 (2325) - lewisbort (2345), Rated blitz game, lichess.org, 2020.

4.a3 Bg7 5.Nf3 0-0=.

4.c4 dc4 5.Bc4+= Bg7 6.Bb2 (6.Nf3 0-0=) 6...0-0= 7.Nf3 Bg4 (7...Qd6 8.Qa4=) 8.Nbd2 (8.0-0 Qd6 9.a3 Nbd7=) 8...Nc6 (8...Nd5 9.h3 Bf3 10.Qf3 Nb4 11.Rb1=) 9.a3 Nd5 (9...Qd6 10.Qc2=) 10.h3 Bc8 (10...Be6 11.Rc1+=) 11.Rc1 (11.b5 Nb8+=) 11...a6 (11...e6 12.Qc2+=) 12.Qb3 (12.0-0 Nb6+=) 12...e6 (12...Nb6 13.Be2+=) 13.Ne4 Nce7 14.0-0 c6 15.Nc3 Re8 16.Rfd1 Bh6 17.Ne4 Bg7 18.Nc5 Bh6 19.Ne4 Nf5 20.Re1 Nd6 21.Nd6 Qd6 22.Bf1 Qe7 23.Qc2 Bd7 24.Qc5 Qc5 25.dc5 (25.bc5 Rab8+/–) ½–½. Dewindt,Cor – Sauve,S, Alberta op, 1997.

4.c4 c6 5.Nf3 Bg7 6.Nc3 dc4 7.Bc4 0-0 8.0-0 Nd5 9.Qb3 e6 (9...Nb6 10.Be2+=) 10.Bd2 Nd7 11.e4 Nc3 12.Qc3 Nb6 13.Bd3 Na4 14.Qb3 Nb6 15.Bg5 f6 16.Bf4 (16.Bd2 f5+=) 16...Bd7 (better is 16...g5!? 17.Be3 g4+=) 17.a4+/– Qe7 18.a5 Nc8 19.a6 b6 20.Rfc1 Kh8 (20...Nd6 21.e5 Nf7 22.ef6 Qf6 23.Bg3+/–) 21.Qc3 (21.b5 c5+/–) 21...Qe8 22.Ra2 Kg8 23.Rac2 Kh8 24.h3 h6 25.Qd2 g5 26.Bg3 Qf7 27.Qe2 Qe8 28.Rc3 Qe7 29.Qb2 f5 30.Ne5 f4? 31.Ng6 Kg8 32.Ne7 Ne7 33.R3c2 Rac8 34.Bh2 b5 35.Rc5 Ng6 36.Kf1 Rf7 37.Bb5 Kh7 38.Bc6 Bc6 39.Rc6 Rc6 40.Rc6 Rd7 41.Rc4 Ne7 42.Ke2 Ng6 43.Qd2 e5 44.d5 Bf6 45.Rc6 Be7 46.b5 Kg7 47.b6 ab6 48.Rb6 Ra7 49.d6 Bd8 50.Rb7 Rb7 51.ab7 Kf8 52.b8Q Ke8 53.d7 Ke7 54.Qdd6 Kf7 55.Qd8 Ne7 56.Q8e7 Kg8 57.Qe8 Kg7 (57...Kg7 58.Qdg6; 57...Kh7 58.Qdg6) 1–0. cust – Bennyhill, Live Game Caissa's Web, 2004.

4.c4 Bg7 5.Nc3 0-0 6.cd5 Nd5 7.Nd5 Qd5 8.Nf3 a5 9.b5 a4 10.Qc2 c6 11.Bc4 Qd6 12.a3 Bd7 13.Qd3 Be6 14.Rb1 Rd8 15.bc6 bc6 16.0-0 Bc4 17.Qc4 Nd7 18.Ng5 Qd5= 19.Qd5 cd5 ½–½. Misiewicz,Patryk – Nowosielski,Piotr (1800), Miedzynarodowy Turniej Szachowy w Kowal Poland, 2008.

4.c4 Bg7 5.Nc3 0-0 6.Nf3 a5 7.b5 b6 (7...Bg4 8.cd5 Nd5 9.Nd5 Qd5 10.Ba3=) 8.cd5 Nd5 9.Bb2 Bb7 10.Bc4 c6 11.0-0 Nc3 12.Bc3 cb5 13.Bb5 Nc6 14.a4 Nb4 15.Ne5 Qd6 16.Rb1 Be4 17.Rb2 (better 17.Bb4!? ab4 18.Nc4+/-) 17...Nd5= 18.Bd2 f6 (better 18...Be5 19.de5 Qe5=) 19.Nc4+- Qe6 20.f3 Bd3 21.e4 (21.Rf2 Rfd8+/-) 21...Nc7? (better 21...Nb4 22.Qb3 f5+=) 22.d5+- Qf7 23.Bf4?? (better 23.Ne5! fe5 24.Bd3+-) 23...Bf1=+ 24.Bc7 (24.Kf1 Nb5 25.Rb5 f5=) 24...Bc4 25.Bc4 Rac8 26.Ba2 Kh8 27.d6 e6 28.d7 Rcd8? (better 28...Rc7!? 29.d8Q Rd8 30.Qd8 Bf8 31.Be6 Qe7 32.Qe7 Be7=) 29.Bd8+- Rd8 30.Rb6 Qe7 31.Re6 (better 31.Qd6 Qd7 32.Qd7 (32.Be6?? Qd6 33.Rd6 Rd6-+) 32...Rd7 33.Rb8 Bf8 34.Rf8 (34.Be6?! Rd1 35.Kf2 Kg7+/-) 34...Kg7 35.Rg8 Kg8 36.Be6 Rf7 37.f4+-) 31...Qc5?? (better 31...Rd7 32.Qc2 Qd8+/-) 32.Kh1 (better 32.Kf1 Bf8 33.Re8 Rd7 34.Qd7 Qc1 35.Ke2 Qb2 36.Qd2 Qd2 37.Kd2+-) 32...h5 (32...Qf8+-) 33.Re8 Kh7 34.Rd8 1-0. Arifars17 (2710) - supertigre (2660), Rated Bullet game, lichess.org, 2021. (=1.d4 D94: Gruenfeld: 4 Nf3 Bg7 5 e3 1...d5 2.b4 Nf6 3.e3)

4.Nf3 Bg4=.

4.f4 Bg7 5.Nf3 0-0 6.c4 a5 7.b5 c6 8.a4 dc4 9.Bc4 cb5 10.ab5 b6 11.0-0 Bb7 12.Ne5 e6 13.Ba3 Re8 14.Nd2 Nd5 15.Qb3 f6 16.Nef3 Nd7 17.g3 (17.e4 Nf4 18.Bd6 Bh6 19.Bf4 Bf4 20.Be6 Kg7+=) 17...f5+= 18.e4 fe4 19.Ne4 N7f6? (better 19...Nf4 20.Rae1 a4+=) 20.Nd6+- Re7 21.Ne5 (better 21.Ng5+-) 21...Rc8?? (better 21...Ne8 22.Nb7 Rb7+=) 22.Nc8+- Bc8 23.Nc6 Qc7 (23...Qd7 24.Be7 Ne7 25.Be6 Qe6 26.Ne7 Kf8 27.Qe6 Be6+-) 24.Ne7 (24.Ne7 Ne7 25.Be6 Kh8 26.Rac1+-) 1-0. Minister007 (2330) - topor7417 (2355), Rated blitz game, lichess.org, 2020.

4.f4 Bg7 5.Nf3 0-0 6.c4 c6 7.Nc3 Nbd7 8.Bb2 Ne4 9.Ne4 de4 10.Nd2 f6 (10...Nf6 11.Be2=) 11.Be2 (11.Ne4!? f5 12.Ng3+/-) 11...e5 12.0-0 ed4 13.ed4 Re8 14.f5 gf5 15.Bh5 (15.c5!?+=) 15...Re7=+ 16.Qb3 e3 (16...Bh6 17.c5 Kh8 18.Nc4=) 17.Nf3 (17.c5 Kh8 18.Nc4 Qg8+=) 17...Nb6= 18.Rae1 e2 (18...f4!? 19.Nh4 Be6=+) 19.Rf2+= Be6 20.d5 (worse 20.Rfe2 Bc4 21.Re7 Bb3 22.ab3 Bf8 23.Rb7 Qc8=+) 20...cd5 21.Rfe2 dc4 22.Qc2 Qd6? (better 22...c3 23.Bc3 Qc8+/-) 23.Nd4+- Bf7?? (23...Qb4 24.Ne6 Nd7+-) 24.Re7 Bh5 25.Nf5 Qd3 (25...Qe7 26.Ne7 Kh8+-) 26.Rg7 Kh8 27.Bf6 (27.Qd3 Nd5 28.Qd5 c3 29.Qb7 Rd8 30.Rh7 Kg8 31.Qg7) 27...Qc2 (27...Qd4 28.Bd4 Rd8 29.Rf7 Rd4 30.Re8) 28.Rg6 1-0. Minister007 (2315) - Axmedov_Azamat (2345), Rated blitz game, lichess.org, 2019.

4.a3 a6 5.Nc3 e5 6.de5 Ne5 7.Bg5 (7.e4 d4 8.Nce2 c5=+) 7...c6 (7...d4 8.Ne4 Be7 9.Bf6 Bf6 10.c3 dc3 11.Qd8 Bd8 12.Nc3=+) 8.e3 (8.e4 d4 9.Bf6 gf6=) 8...Be7 (8...h6 9.Bf4 Bd6 10.Nge2-/+) 9.Nge2 (9.e4 a5 10.Qd4 Ned7=+) 9...Qc7 (9...h6 10.Bf4 Nc4 11.e4=+) 10.f4 (better 10.Nd4=+) 10...h6?? (10...Nc4 11.Qd3-/+) 11.Bh4?? (better 11.Bf6 Bf6 12.fe5 Qe5 13.Qd3+/-) 11...Nc4-/+ 12.Qd4 (12.Qd3 Ng4 13.Bf2 a5-+) 12...Bf5 (better 12...a5 13.ba5 Qa5-+) 13.h3?? (better 13.Ng3!? Bc2 14.Bc4 dc4 15.Bf6 Bf6 16.Qc4=+) 13...Bc2 (13...c5 14.bc5 Bc5 15.Bf6 Bd4 16.Bd4-+) 14.g4? (14.Ng3 Rd8-+) 14...0-0-0 (14...c5!? 15.bc5 Bc5 16.Bf6 Bd4 17.Bd4-+) 15.Bg2 (15.f5 c5 16.bc5 Bc5-+) 15...Be4 (15...c5 16.bc5 Bc5 17.Bf6 Bd4 18.Bd4-+) 16.Rg1? (16.Be4 Ne4 17.Be7 Qe7 18.Ne4 Qe4 19.Qe4 de4 20.Kf2-+) 16...Nb2 (better 16...c5 17.bc5 Bc5 18.Be4 Bd4 (18...Ne4?! 19.Bd8 Rd8 20.Qg7-+) 19.Bf5 Nd7 20.ed4 Rde8 21.Nd5 Qd6-+) 17.Qa7?? (17.Ne4 Ne4 18.Be7 Qe7 19.Qb2 Qh4 20.Kd1+/-) 17...Bd3 18.Ra2 Nc4 19.Kf2?? (19.Qd4 Be2 20.Ke2 Rhe8-+) 19...Rhe8 (19...Ng4 20.Kg3 Bh4 21.Kh4 Nge3 22.Kg3-+) 20.Nd4?? (20.g5 Nd7-+) 20...Ne3! 21.Ke3 Decoy to e3 (21.Bg3-+) 21...Bc5 A pinning theme 22.Kd2 (22.Kd3 Ba7 23.Bf6 Qf4 24.Rf1 Qe3 25.Kc2 Bd4 26.Bd4 Qd4 27.Rd1 Qf2 28.Rd2-+) 22...Ba7 23.Kd3 Qf4 24.Nf5 (24.Bf2 Ne4 25.Be3 Nc5 26.Kc2 Re3-+) 24...Qc4 25.Kc2 Bg1 (25...Re2 26.Kc1 Qc3 27.Kb1 Qb3 28.Kc1 Ra2 29.Ne7 Kd7 30.Bf6 Be3) 26.Ng7 Re2 27.Kd1 Ra2 (27...Qd3 28.Kc1 Be3 29.Rd2 Qd2 30.Kb1 Qc1) 28.Bf6 (28.Na2 Ng4! 29.hg4 Qg4 30.Kd2 Qg2 31.Kd1 Qg4 32.Kd2 Qh4 33.Nc1 Qh2 34.Kd3 d4 35.Nb3 Qh3 36.Kc2 d3 37.Kb2 Qg2 38.Ka1 d2 39.Kb1 d1Q 40.Nc1 Qgc2 41.Ka1 Qdc1) 28...Qb3 (28...Qd3 29.Kc1 Be3) 29.Ke1 Qc2 (29...Bf2 30.Kf1 Qc4 31.Ne2 Qe2) 30.Bd8 (30.Na2 Bf2 31.Kf1 Be3 32.Bh4 Qd1 33.Be1 Qd3) 30...Ra1 31.Nd1 Rd1 0-1. valerypavlovich (2100) - vaingrecsky (2175), net-chess.com, 2022.

4.b5 Na5+=.

4.b5 Qd6?? 5.bc6 Qc6 6.Qd3 g6 (6...e6 7.Nd2+–) 7.Nc3 Bf5 8.e4! de4 9.fe4 (better is 9.Qb5!? Bd7 10.Qb3+–) 9...Ne4+= 10.Nce2?? (better is 10.Bb2 Bg7 11.Nf3+=) 10...Nf2!-+ 11.Qh3?? Nh1 12.Qh4 Bc2 13.Bd2 0-0-0 14.g3 Qe4 15.Rc1 e6 16.Bg2 Qd3 17.Bh1 c5?? 18.Qf6 Rd7?? 19.Qh8+– Rd8 20.Qh7 Qf5 21.dc5 Bc5 22.Nf3 Be4 23.Rc3 Rd3 24.Qh8 Kd7 25.Ne5 Kd6 26.Nd3 Ke7+– 27.Nc5 Bh1 28.Nb7! Bg2 29.Rc7# (29.Qd8#) 1–0. Burchardt,Ralph (1860) – Karl,Georg (2140), remoteschach.de, 2006.

4.Nd2 e5 5.e3 (5.a3!?-/+) 5...Bb4-+ 6.a3 Bd6 7.c3 0-0 8.de5 Ne5 9.Ne2?? (9.c4-+) 9…Nd3 0-1. arok - pierre (2130), internet, 2007.

4.Bg5 e5 5.c3 ed4 6.Qd4 Be7 7.Nd2 0-0 8.0-0-0? (better is 8.Nb3!?-/+) 8...c5-+ 9.bc5 Bc5 10.Qh4? (10.Qa4-+) 10...Qb6 11.e3 Ne5 (11...Qa5!? 12.Kb2 Qa3 13.Kb1 Qc3 14.Ne2 Qd3 15.Ka1-+) 12.Nb3 Be3 13.Be3 Qe3 14.Kb2 Bf5 15.Re1 Nd3-+ 16.Bd3 Qd3 17.Nd4? Bd7 18.Nge2 a5 19.Qg5 Rac8 20.Rd1 Qa6 21.Rd2 b5 22.Ng3 h6 23.Qf4 b4 24.Rc1?? bc3 25.Rc3 Rc3 26.Kc3 a4 27.Ngf5?? Rc8 28.Kb2 a3 29.Kb1 Qf1 30.Rd1 Qd1 31.Qc1 Qc1 (31...Rc1) 0–1. keiters – smithche (2340), net–chess.com, 2011.

4.Bg5 e5 5.de5 Ne5 (5...Bb4 6.c3 Be7 7.ef6 Bf6 8.Bf6 Nf6 9.Nd2+/-) 6.f4 (6.a3 h6 7.Bf4 Ng6-/+) 6...Neg4 (6...Bb4?! 7.c3 Bc5 8.fe5=+) 7.h3? (better 7.a3-/+) 7...Bb4 8.c3 Ne3 9.Qa4 Bd7 10.Qb4 (10.Qb3 Bf5 11.cb4 Nc2 12.Kd1 Na1 13.Qe3 Qe7 14.Qe7 Ke7 15.Nc3-+) 10...Nc2 11.Kd2 (11.Kd1 Nb4 (11...Na1?! 12.Kc1-+) 12.cb4 Ba4 13.Kc1 Qe7-+) 11...Nb4 (11...Na1?! 12.Kc1 Bf5 13.Nd2-+) 12.cb4 Ne4 (better 12...h6 13.Nf3 Ne4 14.Ke1 hg5 15.fg5-+) 13.Ke3 (13.Kc1 Ng5 14.fg5 Qg5 15.Nd2 Qf6-+) 13...f6 (better 13...Ng5!? 14.Nd2 Qf6 15.Rb1 Qb6 16.Kd3 Bf5 17.e4 Ne4 18.Re1-+) 14.Bh4 Qe7 15.Nd2 (15.Nf3 Ng3 16.Kf2 Nh1 17.Kg1 Qe3 18.Kh1 Qc1-+) 15...d4 16.Kd4 Qb4 17.Nc4 Qc3 18.Ke4 Bc6 19.Kf5 g6 20.Kg4 (20.Ke6 Qd4 21.Bf6 Bd5) 20…h5 0-1. waitingforgodot5 - ahn89 (2485), gameknot.com, 2021. (=1.d4 Nf6 2.f3 d5 3.b4)

4.a3 a5 5.b5 Bd6+=.

4.Ba3 Bd6 5.Nc3 0-0 (5...a5 6.Nb5 ab4 7.Nd6 Qd6 8.Bb2-+) 6.e3 (6.Nb5 Be7-/+) 6...a6 (6...a5 7.Qb1-+) 7.Nge2 (7.Rb1 a5-/+) 7...b5 (7...a5 8.Qb1 Na6 9.Nb5 Bb4 10.c3 Ba3 11.Na3-+) 8.Qd2 a5?? (better is 8...c6-/+) 9.Nb5+= ab4 10.Bb4 Bb4 11.Qb4 Na6 12.Qc3 Rb8 (12...Bd7 13.Ng3+=) 13.a4 Rb7 14.Ng3 c6 15.Na3 (worse is 15.Qc6 Qa5 16.Qc3 Rb5+=) 15...Qb6 (15...Nb4 16.Bd3+/–) 16.Bd3 (16.a5 Qa7 17.Qc6 Qa8+–) 16...Qb2 (better is 16...Nb4!?+/–) 17.Qb2+– Rb2 18.0-0 (18.a5 c5+–) 18...Nb4 (18...Rb4 19.Nb1+/–) 19.Rfc1 (19.Rfb1 Nd3 20.cd3 Rb1 21.Rb1 Ba6+–) 19...Nd3 20.cd3 Bd7 (20...Ba6 21.Rc6 Bd3 22.a5+/–) 21.Nc2 (21.e4 Ra8 22.Nc2 Ra5+/–) 21...g6 (21...Ra8 22.e4+/–) 22.h4 (22.a5 Ra8 23.Ra3 Ra6+–) 22...Rfb8 (22...Ra8 23.e4+/–) 23.e4 de4 (23...Bc8 24.a5+–) 24.de4 Ra8 25.e5 c5? (25...Nd5+–) 26.ef6 (26.dc5?! Ra4 27.Ra4 Ba4 28.ef6 Rc2 29.Rc2 Bc2+–) 26...Ra4 (26...cd4 27.Nd4 Rb4 28.Nc6 Bc6 29.Rc6 Rh4 30.Ne4+–) 27.Ra4 (27.dc5?! Rc2 28.Rc2 Ra1 29.Kf2 Bc6+–) 27...Ba4 28.Ne1 h5 (28...Rb3 29.dc5 Bc6 30.Rd1+–) 29.dc5 Bc6 30.Nd3 Rd2 (30...Rb7 31.Ne5 Rc7 32.Ne4+–) 31.Nb4 Ba8 32.c6 Bc6 (32...Rd8+–) 33.Nc6 Kf8 34.Ne4 Rd5 35.Kf2 (35.Kf2 Ke8 36.f4+–) 1–0. valerypavlovich – mpopp, net–chess.com, 2018.

4.Ba3 Bd6 5.e3 Qe7-/+.

4.Ba3 Bd6 5.g4 Bf4 6.Nh3? (6.Qd3-/+) 6...Bd6 (better is 6...Ng4!? 7.e4 Qh4 8.Ke2 de4 9.fe4 Nh2 10.Nf4 Qg4 11.Ke1 Qg3 12.Kd2 Qf4 13.Kc3 Nf1 14.Rf1 Qe4 15.Rg1-+) 7.Nc3 (7.Ng1 h5 8.e4 de4 9.g5-+) 7...Nc6 8.Rb1 Bd7 9.Bg2 (9.g5 Ng8 10.e4 Be7-/+) 9...Qe7 (9...a5!? 10.b5 Ba3 11.bc6 Bc6-+) 10.e4 de4 11.fe4 e5 12.g5 Ng8 13.Nd5 Qe6 14.Qd3 Nge7 15.de5 Qe5?? 16.b5?? Nb4?? 17.Bb4+– Bb4 18.Nb4 0-0?? 19.Nd5 Nd5 20.Qd5 Qd5 21.ed5 Bg4 22.0-0 Rae8 23.Nf4 b6 24.h3 Bf5 25.Nd3 Be4 26.Be4 Re4 27.Nf2 Re5 28.c4 g6 29.h4 Rfe8 30.Ng4 Re4 31.Nf6 Kg7 32.Ne8 Re8 33.Rf4 Re7 34.Kf2 h6 35.Re1 Rd7 36.gh6 Kh6 37.Kg3 f5 38.Re6 Kh5 39.a4 Kh6 40.a5 ba5 41.Ra6 Re7 42.Rf5 Re3 43.Kg4 Re4 44.Rf4 Re1 45.Ra5 Rg1 46.Kh3 Rh1 47.Kg2 Rc1 48.Ra7 Kh5 49.Rc7 g5 50.hg5 Kg5 51.Rcf7 Rc2 52.Kf3 Rc3 53.Ke2 Rb3 54.d6 Rb2 55.Kd3 Rb3 56.Kc2 Re3 57.d7 (57.d7 Re5 58.d8Q Re7 59.Qe7 Kh5 60.Qe5 Kg6 61.R4f6) 1–0. kirklandlake – pieeater, ChessWorld.net, 2011.

4.c3 Nbd7 5.Bg5 Nb6 6.Nd2 Be7 7.e4 a5 8.b5 0-0 9.e5 Nfd7 10.Be7 Qe7 11.f4 f6 12.Bd3 f5 13.Ngf3 c5 14.0-0 cd4 15.cd4 Re8 16.Rc1 Nf8 17.Qc2 Rd8 18.Qc5 Qc5 19.dc5 Nbd7 20.c6 bc6 21.bc6 Nb6 22.c7 Rd7 23.Rb1 Rc7 24.Rb6 Bd7 25.Nd4 Rac8 26.Ba6 Ra8 27.Rfb1 Bc8 28.Be2 Bd7 29.Kf2 h6 30.h3 Kh7 31.N2f3 Rac8 32.Ba6 Ra8 33.g4 fg4 34.hg4 Rca7 35.Bb7 Rb8 36.Bd5! Rb6 37.Be4 Kg8 38.Rb6 Rc7 39.f5 ef5 40.gf5 Rc4 41.Bd5 Kh7 42.Bc4 (42.Bc4 a4 43.e6+–) 1–0. orane (2195) – M8IN3, Live Game Caissa's Web, 2004.

4.c3 Be7 5.Bf4 a5 6.Qa4 Nbd7 7.e4 0-0 8.e5 Nh5 9.Be3 f6 10.f4 (better is 10.g4!?+=) 10...fe5=+ 11.fe5 Bh4 12.Bf2?? (better is 12.Ke2-/+) 12...Bf2-+ (12...Rf2?! 13.g3 Nb6 14.Qd1 Ng3 15.hg3 Bg3 16.Ne2-+) 13.Kd1 Bd4! 14.cd4 Rf1 15.Kc2 Qg5 16.Nd2 Ra1 17.Ngf3 Qg6 18.Kb2 Rh1 (19.b5 Qg2-+) 0–1. juancabeta – pierre (2160), internet, 2007.

4.Qd2 Bd6-/+ 5.c3 (5.e3 e5-/+) 5...0-0 6.Nh3 (6.e3 e5-/+) 6...e5 7.g4 (7.de5 Be5 8.Nf2 Nbd7-/+) 7...Nc6 (better is 7...ed4 8.cd4 Re8-/+) 8.Na3? (better is 8.g5 Nh5 9.b5-/+) 8...ed4-+ 9.b5 dc3 10.Qc3 (10.Qc2 Nd4 11.Qd3-+) 10...Bb4 11.bc6 (11.Bd2 Bc3 12.Bc3-+) 11...Bc3 12.Kd1 Ba1 13.g5 Ne8 14.cb7 Bb7 15.e3 d4 (15...c5 16.Rg1-+) 16.e4 d3 17.Bd2 Qd4 18.Nf2 Qf2 19.Nc2 Qf3 20.Ke1 dc2 21.Be2 Qh1 22.Bf1 (22.Kf2 Bd4 23.Kg3 Qg1 24.Kf4 Qf2 25.Bf3 Qh2 26.Kg4 Bc8) 22...Bc3! 23.e5 (23.Bc3 c1Q) 23...c1Q 24.Kf2 Qd2 (24...Qf3 25.Kg1 Qcf1) 25.Be2 (25.Kg3 Qdh2 26.Kg4 Qf3) 25...Qf3 (25...Qg2) 26.Kg1 Qde3 (26...Qg5) 0–1. pinpuk – djinnocide (2230), gameknot.com, 2015. (=1.d4 Nf6 2.f3 d5 3.b4 e6)

4.b5 a4 5.e3 Bg4 6.c4 dc4 7.Bc4 e6 8.0-0 Nbd7 9.Be2 Bd6 10.Nc3 a3 11.Rb1 0-0 12.Ng5 Be2 13.Qe2 Qe7 14.Bd2 Rfd8 15.f4 h6 16.Nf3 Nd5 17.Ne4 f5 18.Nd6 cd6 19.e4 fe4 20.Qe4 N7f6 21.Qd3 Qd7 22.Rfe1 Ne7 23.Qb3 Nfd5 24.Re2 Rdc8 25.Rbe1+/– Qc7 26.Re6 Qc2 27.Rb1 Qb3=+ 28.Rb3 Rc2 29.Re1 Ra2 30.Rbb1 Nf5 31.Ra1 Ra1 32.Ra1 Nc7 33.g4 Ne7 34.b6 Ncd5 35.Ra2 Nb6 36.Bb4 Nc4 37.Nd2 Nd2 38.Bd2 Nc6 39.Bc1 Nd4 40.Ra3 Ra3 41.Ba3 d5 42.Kf2 b5 43.Bb2 Nc6 44.Ke3 g6 45.h4 Kf7 46.Kd3 Ke6 47.h5 gh5 48.f5 Kd6 49.gh5 Ne5 50.Kd4 b4 51.Bc1 Nf3 52.Kd3 Kc5 53.Bh6+= Ne5 54.Kc2 Kc4 55.Bg7 b3 56.Kb1 Nf3 57.h6 Ng5 58.Kb2 Kb4 59.Bf6 Nh7 60.Be5 Kc4 61.f6 Ng5 62.Bf4 Nf7 63.h7 d4 64.Bd2 Kd3? 65.Ba5 Kc4+= 66.Bd2 Nh8 67.Be1 Nf7 68.Ba5 d3 69.Bd2 Kd5? 70.Kb3+/– Ke6 71.Bg5 Kf5 72.Bh4 Kg4 ½–½. Akhiyarov,Viktor – Shestakov,D (2275), Corporation Centre Cup, Izhevsk RUS, 2009.

4.b5 c6 5.a4 Qb6 6.e3 Bg4 7.Ba3 Nbd7 8.Nbd2 Ne4 9.c4 e5 10.Bf8 Rf8 11.Ne4 (11.c5 Qd8=) 11...de4+= 12.c5 Qd8 (12...Nc5!? 13.Qc2 Nd3 (13...Bf3? 14.dc5 Qd8 15.gf3+–) 14.Bd3 ef3+=) 13.h3= Bh5 (worse is 13...ef3 14.hg4 Qe7 15.gf3+/–) 14.g4 ef3 15.gh5 Qf6 16.Qd3 (16.Rc1 ed4 17.Qd4 Qd4 18.ed4 0-0-0=) 16...Rd8 17.Qh7 Qh4 (17...ed4!? 18.Qe4 Qe7 19.Qe7 Ke7 20.ed4 Rh8+=) 18.Rd1 (18.Qg7!? Qe7 19.Rd1 ed4 20.Rd4+=) 18...Nc5+= 19.Qg7 ed4 20.Rg1 (20.Rd4!? Rd4 21.Qd4 (worse is 21.ed4 Qf4 22.Qe5 Qe5 23.de5 Rh8-/+) 21...Qd4 22.ed4+=) 20...Ne6 21.Qg4 Qe7 22.Qf3 (22.ed4 Nf4 23.Qe6 Qe6 24.Kd2 Rd4 25.Kc1 Ra4-+) 22...Qb4 23.Rd2 de3 24.Qe3 Rd2 25.Qd2 Qa4 26.bc6 bc6 27.Rg3 Ke7 28.Rd3 Qa1 29.Qd1 Qd1 30.Kd1 Nf4 31.Ra3 Rd8 32.Kc2 Rd5 33.h6 Rh5 34.Rf3 Ne6 35.Ra3 Rh6 36.Ra5 Rf6 37.Kd2 Rf2 38.Be2 f5 39.Ke1 Rf4 40.Ra7 Kd6 41.Rh7 Nd4 42.Rh6 Ke5 43.Bd1 c5 44.h4 Nf3 45.Bf3-/+ Rf3 46.Ke2 Rh3 47.Kf2 Kf4 48.Kg2 Rg3 49.Kh2 c4 50.Rc6-/+ Rg4 51.Kh3 Rg3 52.Kh2 Rg4 53.Rc4 Ke5 54.Rg4 fg4 55.Kg3 ½–½. Wehmeier,Manuel – Santos Ortigosa,Joaquin (1880), San Fernando op, 2005. (=1.d4 d5 2.Nf3 Nf6 3.b4 a5)

4.b5 e6 5.e3 c5 6.dc5 Bc5 7.a4 Ne4 8.Bb2 0-0 9.Bd3 Nd6 10.0-0 Nd7 11.Nbd2 b6 12.Nd4 Bb7 13.f4 Nf6 14.Rf3 Nde4 15.Rh3 Qd6 (15...Rc8 16.Rc1=+) 16.N2f3 (16.Be4 de4 17.N4b3 Qe7+=) 16...Ng4 (16...Rac8 17.Ne5=) 17.Be4= de4 18.Ng5 Ne3 19.Re3 Qf4 20.Rg3 e5 21.Qh5 Qf5 22.Rf1 Qg6 23.Qh4 Bd4 24.Bd4-/+ ed4 25.Nf7 Qe6?? 26.Rf6 Qd7?? 27.Rg7!! Kg7 28.Qg5# 1–0. Tkachev,T (1990) – Kabachenko,M (1920), Independence Cup A, Kyiv UKR, 2008.

4.b5 g6 5.Bb2 Nbd7 6.Nbd2 Nb6 7.a4 Bg7 8.e3 0-0 9.Bd3 Bf5 10.0-0 Qc8 11.Qe2 Nbd7 (11...Bd3!? 12.Qd3 Qe6=) 12.c4 c5 (12...Bd3 13.Qd3 e6 14.Rfc1+=) 13.Rfc1 (13.Bf5 gf5 14.cd5 Nd5+/-) 13...Bd3+= 14.Qd3 dc4 15.Nc4 b6 (15...Rd8 16.d5+/-) 16.d5 Qc7 17.e4 Ng4 (17...Rad8 18.e5 Ng4 19.Re1+/-) 18.Bg7 Kg7 19.Re1 Nge5? (better 19...f6!?+/-) 20.Qc3 f6 21.Nce5 Ne5 22.Ne5 (better 22.Nd4 Qd6 23.Ne6 Kg8 24.Nf8 Rf8 25.f4+-) 22...Qe5+= 23.Qe5 fe5 24.Rac1 Rad8 25.f3 g5 26.Kf2 h5 27.Ke3 g4 28.fg4 hg4 29.Rf1 Kg6 30.h3 Kg5 (30...Rf1!? 31.Rf1 e6 32.de6 gh3 33.gh3 Re8+=) 31.hg4+/- Kg4 32.Rf3 (32.Rf8 Rf8 33.Rh1 e6+/-) 32...Rf4 (32...Rf3 33.gf3 Kg5 34.Rg1 Kf6 35.f4+=) 33.Rh1 (33.Rh3 Rd7+-) 33...Rdf8 (33...Rf3!? 34.gf3 Kg5 35.Rg1 Kf6+=) 34.Rfh3+/- c4? (better 34...Rf1+/-) 35.Rh4?? (35.Rh7 R4f7+-) 35...Kg5?? (better 35...Kg3 36.Rh8 Kg2 37.Rf8 Rf8+/-) 36.Rh5+- Kg6 (36...Kf6 37.Rh6 Kg7 38.Rh7 (38.Rb6?! Rg4+/-) 38...Kg8 39.Re7+-) 37.Re5 Rg4 38.Re7 Rg3 39.Kd4 c3 40.Rc7 Rf2 41.Rc3 (41.Rhh7!? Rgg2 42.Rcg7 Kf6 43.e5 Kf5 44.Rf7 Kg4 45.Rhg7 Kh3 46.Rf2 Rf2 47.Kc3 Rf3 48.Kd4 Rf4 49.Ke3 Ra4+-) 41...Rd2 42.Kc4 Rc3 43.Kc3 Rg2 44.Re1 Kf6 45.Kd4 Rd2 46.Kc4 (46.Ke3 Ra2 47.Rh1 Ke7+-) 46...Ra2?? (better 46...Ke5+/-) 47.e5+- Ke7 48.e6 Ra4 49.Kb3 (better 49.Kd3!? Ra3 50.Kd4 Rg3 51.d6 Kd6+-) 49...Rb4 (better 49...Rd4 50.Re5 a4 51.Kc3 Rd1+-) 50.Kc3 Rb5 51.d6! Kd6 52.e7 Rc5 53.Kb3 Rb5 (53...Rc8 54.e8R Re8 55.Re8 Kc6+-) 54.Ka4 Re5 (54...Rb4 55.Ka3 Rb1+-) 55.Ka3 (better 55.Re5 Ke5 56.e8Q Kd6 57.Kb5+-) 55...Re1-+ 56.e8N Re8 57.Ka4 Re4 58.Kb5 (58.Kb3 a4 59.Kc3 Re3 60.Kd2 Rb3 61.Kc2 b5 62.Kc1 a3 63.Kc2 Rb2 64.Kc3 b4 65.Kd3 a2 66.Kd4 a1Q 67.Ke4 Qe1 68.Kf5 Rf2 69.Kg4 Qg1 70.Kh5 Rh2) 58…Rb4 (58...Rb4 59.Ka6 Kc7 60.Ka7 a4 61.Ka6 a3 62.Ka7 Ra4; 58...Kc7 59.Ka6 Re5 60.Ka7 a4 61.Ka6 Ra5) 0-1. IMaDale (2430) - EricRosen (2500), Rated bullet game, lichess.org, 2018. (=1.d4 D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4 1...Nf6 2.Nf3 d5 3.b4)

4.Qd2 Ne4-/+ 5.Qf4 f6 (5...ab4 6.Nbd2 Nc3-/+) 6.Nh4? (6.Nbd2!?=+) 6...e6 (6...e5 7.Qf3 Be6 8.de5 Bb4 9.c3-+) 7.e3? (better is 7.Qf3-/+) 7...g5-+ (7...ab4?! 8.Qf3-/+; 7...Bb4?! 8.c3 Bd6 9.Qf3-+) 8.Qg4 h5 9.Bb5 c6 10.Qe2 cb5 11.Qb5 Bd7 12.Qb7 Bc6 13.Qa8 Ba8 14.Ng6 (14.Ng6 Bb4 15.c3 Nc3 16.a3 Nb1 17.ab4-+). bouffant – reck, net–chess.com, 2002.

4.a4 Bf5 5.e3 e6 6.Ba3 Nbd7 7.Nbd2 Bd6 8.c4 c6 9.c5 Bb8 10.a5 h5 11.h4 0-0 12.Bb2 Ng4 13.Be2 Qf6 14.Nf1 Qg6 15.Qd2 f6 16.N3h2? Nh2-+ 17.Nh2 Qg2 18.Bf3 Qh3 19.0-0-0 Bh2 20.Bh5 Qh4 21.Bf3 Ne5! 22.de5 Qc4 23.Qc3 Qc3 24.Bc3 Be5 25.Kb2 Kf7 26.Bg2 Bc3 27.Kc3 e5 28.Rh4 g5 29.Rhh1 Rh8 30.Kd2 Kg7 31.Ke2 Rh1 32.Bh1 Rh8 33.e4 Bg4 34.f3 Rh2 35.Ke3 Be6 36.b5 ab5 37.ed5 Bd5 0–1. Akhiyarov,Viktor (1875) – Gainullin,Yakov (2115), Izhevsk RUS, Udmurtia Ch, 2011.

4.c3 Nc6 5.a4 Bg4 6.Ne5 h5 (6...Ne5 7.de5 Ng8 8.Nd2=) 7.Bg5 Qd6 (7...Ne5!? 8.de5 Nh7=) 8.Bf4+= Nd7? (better is 8...Rg8!?+=) 9.h3 (9.Nf7 Qf4 10.Nh8 Qh6=) 9...Bf5 (better is 9...Qf6!? 10.hg4 Qf4 11.Nc6 bc6+/–) 10.Nf7!+– Kf7? (10...Qf4 11.e3 Qe4 12.Nh8 e5+–) 11.Bd6 cd6 12.e3 g5 13.Bd3 e6 (13...Bd3 14.Qd3 e6 15.Nd2+–) 14.Bf5 ef5 15.Qd3 Ne7 16.Nd2 Bg7 17.c4 Nb6 18.c5 dc5 19.bc5 Nd7 20.Rb1 Rab8 21.Nf3 g4 (21...Bf6 22.h4 g4 23.Ng5 Ke8 24.Ne6+–) 22.Nh4 Kf6 (22...f4 23.ef4 Nf6 24.Nf5 Nf5 25.Qf5 Rhe8 26.Kd2+–) 23.Rb7! Rb7 24.Qa6 Kg5 (24...Rb6 25.cb6 Nb8+–) 25.f4 Kh4 26.hg4 Kg3 (26...Kg4 27.Qe2 Kg3 28.Qf3) 27.Rh3 Kg2 (27...Kg4 28.Qe2) 28.Qf1 1–0. pierred (2800) – vaingrecsky (2270), net–chess.com, 2016.

4.Nc3 c6 5.g3 e6. odelia – justenest (1950), net–chess.com, 2011.

4.Nc3 h6 5.Bf4 c6 6.e3?? (6.a3 g5 7.Bg3 Nbd7=) 6...Bg4?? (6...e5 7.de5 (7.Ne5?? Bb4 8.Rb1 Bc3 9.Ke2 Ne4-+) 7...Bb4 8.ef6 Bc3 9.Nd2 Bf6 10.Rb1-+) 7.h3?? (7.a3 Ne4 8.Ne4 de4+=) 7...Bh5?? 8.Bd3?? Nbd7?? 9.a4?? e6?? 10.0-0 Bb4-/+ 11.Qd2?? Bf3 12.gf3? Qa5 13.Qc1 Bc3 14.Ra3 g5 15.Bd6 b5 16.ab5-/+ Qb6 17.Rc3 ab5 18.Ra3 Rc8 19.Qa1 c5?? 20.Ra8 Qb7 21.Rc8 Qc8 22.dc5 b4?? 23.Qa4 Rg8? 24.Qb4 Kd8? 25.Rb1 Ne8 26.Bb5 Nd6+/– 27.Bd7 Kd7= 28.cd6 Qc2?? 29.Ra1+– Qc6 30.Ra7 Kc8 31.d7 Kd8 32.Qb8 Ke7 33.d8Q 1–0. enco (2270) – grahamtrue (2240), net–chess.com, 2011.

4.e3 e6 5.a3 Be7 6.Bd3 0-0 7.c4 dc4 8.Bc4 c6 9.0-0 Nbd7 10.Nc3 Re8 11.Qc2 Bf8 12.e4 g6 13.e5 Nd5 14.Ne4 f6 15.ef6 N7f6 16.Bg5 Bg7 17.Qc1 Qc7 18.Nc5 a5 19.Nd3 ab4 20.ab4 Ra1 21.Qa1 b6 22.Re1 Qd6 23.Rb1 Ne4 24.Be3 Ne3 25.fe3 Bh6 26.Re1 Nf6 27.Nde5 Qb4 28.Rb1 Be3 29.Kf1 Qa5 30.Qa5 ba5 31.Nc6 Bd7 32.Nce5 Ra8?? 33.Nd7+– (33.Nd7 Nd7 34.Be6 Kg7 35.Rb7+–) 1–0. capacuba (2200) – rhand (2390), net–chess.com, 2011.

4.a4 c6 (4...ba4 5.e3=) 5.Bf4+= a5 (5...Ba6 6.c3+=) 6.ab5+/– cb5 7.Nc3 (better is 7.e3+/–) 7...e6?? (better is 7...e5 8.Bd2 e4=+) 8.Nb5+– Bb4 (better is 8...Na6 9.ba5 Be7+–) 9.c3 Be7 10.Nc7 Kd7 11.Qa4 Nc6 12.Ne5 (12.Ne5 Kc7 13.Qc6 Kb8 14.Nd7 Ka7 15.Bc7 Qc7 16.Qc7 Bb7 17.Ra5#) 1–0. Fritz 11 – pierre, 2009.

4.c3 c6 (4...a5 5.e3 c6 6.Bd3=) 5.Qd3 (5.a4 a6+=) 5...h5 (5...a5 6.Nbd2=) 6.Ng5 (6.a4 ba4 7.Ra4 Ne4+=) 6...g6 7.g3 (7.a4!?=) 7...Bf5=+ 8.Qe3 (8.Qd1 a5=+) 8...e6 9.Qe5 (9.Bg2 a5-/+) 9...Bh6 (better is 9...a5 10.ba5 Bd6-/+) 10.Nf7? (better is 10.Bf4=+) 10...Kf7-+ 11.h4?? (better is 11.Bh6 Rh6 12.Bg2-+) 11...Bc1 (11...Bc1 12.Nd2 Bb2-+) 0–1. bbuck (1650) – amilne, net–chess.com, 2003.

4.Nc3 a6 5.h4 (5.a3 Bf5=) 5...e6 6.a4 (better is 6.a3!?=+) 6...Bb4-/+ 7.Bd2 Ng4 (better is 7...ba4!? 8.Ne5 0-0-/+) 8.ab5=+ Bc3 (8...c5!? 9.e3 0-0=+) 9.Bc3+= 0-0 10.Bb4 (10.e3 Bb7+=) 10...Re8= 11.ba6 Na6 12.Bd2 Bb7 13.Ne5 (13.Bf4 f6=) 13...Ne5=+ 14.de5 f6 (14...c5 15.Bf4=+) 15.ef6 Qf6 16.Ra4 c5 17.Bg5 Qc3 18.Qd2 Qb2 19.h5? (better is 19.c4 Qb3 20.Qa2-/+) 19...h6 20.Bf4 d4 (20...Nb4!? 21.Ra8 Ra8 22.f3-+) 21.e3 de3 22.fe3 Red8 23.Bd3 e5 24.Bg3 e4! 25.Re4 Be4 26.Rh4 c4 27.Be4 Rd2 28.Kd2 Rd8 29.Ke2 Nc5 30.Bg6 Qc3 31.Re4 Qd2 32.Kf3 Ne4 33.Ke4 Qc2 34.Kf3 Rf8 35.Kg4 Qe2 36.Kh3 Qe3 37.Kh2 Rf1 38.Bd6 Qg1 39.Kh3 c3 40.Bd3 Qe3 41.Bg3 Qd3 42.Kh2 c2 43.Kh3 c1Q 44.Kg4 Qg5 45.Kh3 Rh1# (45...Qgg3#) 0–1. leemcadam – SuzyfromFlorida, internet, 2007.

4.e3 c6 5.Bd3 e6 6.a4 (6.Bd2 Ne4=) 6...Ba6 (6...Bb4 7.c3 Bd6 8.ab5 cb5 9.Bb5 Bd7 10.Bd3=) 7.Qe2 (7.c3 ba4 8.Ba6 Na6 9.Qa4 Nb8+=) 7...Qb6 (7...Bb4 8.Bd2 Bd2 9.Nbd2+=) 8.c3 (8.a5 Qd8 9.c3 Ne4+=) 8...Bd6 (8...ba4 9.Ra4 Bd3 10.Qd3=) 9.Nbd2 (better is 9.ab5 Bb5 10.Bb5 cb5 11.Na3+=) 9...Ne4? (better is 9...ba4 10.Ba6 Na6=) 10.a5+– Qb7 11.Ne4 de4 12.Be4 Nd7 13.Bd3 Rc8 14.Ng5 g6 (14...Nf6 15.e4 Be7 16.0-0+–) 15.Ne4 (15.Qf3 0-0+–) 15...Qb8 (15...Be7 16.Ng3+–) 16.f4 f5 17.Nd6 Qd6 18.e4 Rf8 (18...fe4 19.Qe4 0-0 20.0-0+–) 19.e5 Qd5 20.Be3 h6 21.0-0 Ke7 22.Qa2 (22.Bb1!? Kf7+–) 22...Qa2 23.Ra2 Rg8 24.h4 h5 25.Rc1 Bb7 (25...Rc7 26.Kf2+–) 26.c4 (26.a6 Ba8 27.d5 cd5 28.Ba7 Bc6+–) 26...a6 27.cb5 (better is 27.Rac2!? Rgd8+–) 27...cb5 28.Rac2 Nb8?? (better is 28...Rc2 29.Rc2 Rc8+/–) 29.Rc7 Kd8 (29...Rc7 30.Rc7 Nd7 31.Rb7+–) 30.Rb7 Rc1 31.Bc1 Kc8 32.Re7 1–0. Gravez,Bruno – Fenaux,Nathanel, FRA Nord–ch U18, 2000. (=1.d4 d5 2.Nf3 Nf6 3.b4 b5)

4.e3 Bb7 5.Bd3 e6 6.a3 Nbd7 7.Nbd2 Be7 8.Bb2 c5 9.dc5 bc5 10.bc5 Nc5 11.Bb5 Ncd7 12.Ne5 0-0 13.Nd7 Nd7 14.0-0 Rc8 15.Rb1 Nf6 16.Bd3 Ba8 17.Nf3 h6 18.Qe2 a5 19.Ne5 Rb8 20.c4 dc4 21.Bc4 a4 22.Rfd1 Qa5 23.Ba2 Rfd8 24.Ng4 Rd1 0–1. Duffy – hassell, playchess.de, 2002.

4.e3 e6 5.a3 c5 6.c3 Bd7 7.Be2 c4 8.a4 a6 9.Qc2 Nc6 10.Nbd2 b5 11.a5 Nb4 12.cb4 Bb4 13.0-0 Ba5 14.e4 Bd2 15.Nd2 (worse is 15.Qd2 Ne4 16.Qe3 a5-/+) 15...de4 16.Ne4 0-0 (better is 16...Bc6!? 17.Nc5 Qd4=) 17.Ba3+/- Bc6 (17...Ne4 18.Bf8 (18.Qe4?! Re8+=) 18...Bc6 19.Bf3 Qd4 20.Bb4+/-) 18.Nf6+- Qf6 19.Bf8 Kf8 20.Bc4 (20.Qh7 Qh6 21.Qc2 Qg5+-) 20...Qd4? (20...bc4 21.Qc4 Bd5 22.Qc5 Ke8+/-) 21.Bd3?? (better is 21.Be6 Bg2 A) 22.Qh7?! fe6 (worse is 22...Bf1 23.Rf1 Re8 24.Bh3+/-) 23.Kg2 Qg4 24.Kh1 Qf3 25.Kg1 Qg4 26.Kh1 Qf3 27.Kg1 Qg4 28.Kh1=; B) 22.Kg2 fe6 23.f4 (23.Qh7?! Qg4 24.Kh1 Qf3 25.Kg1 Qg4 26.Kh1 Qf3 27.Kg1 Qg4 28.Kh1=) 23...Qd5 24.Kg3+-) 21...Bg2+= 22.Kg2 Qg4 ½-½. Guillamat,Jean Pierre (1900) - Le Perf,Henri (1610), Fouesnant op, 1997. (=1.d4 d5 2.Nf3 Nf6 3.b4 b6)

4.Bf4 e6 5.a3=.

4.Bf4 Bg4 5.Ne5+= Nbd7 (5...e6 6.Ng4 Ng4 7.e4+=) 6.h3 Bf5 7.e3 h6 (7...e6!? 8.Nc6 Qc8=) 8.Ba6+/- Bh7?? (better 8...Ne5 9.de5 Nd7 10.Qd5 g5+/-) 9.Nc6+- e5 (9...Nc5 10.Nd8 Na6 11.Nc6+-) 10.Nd8 (10.de5 Ne4 11.Nd8 Bb4 12.c3 Nc3+-) 10...ef4 (10...Bb4 11.c3 ef4 12.Nc6+-) 11.Nc6 Bd6 12.Bb7 0-0 13.Ba8 Ra8 14.0-0 Ne4 (14...fe3 15.fe3 a6 16.Nc3+-) 15.ef4 Bf4 (15...Nb8 16.Ne5 Bb4 17.c4+-) 16.Qg4 (16.Qg4 Bd6 17.Qd7+-) 1-0. olo (2350) - vaingrecsky (2175), net-chess.com, 2022.

4.Bb2 Bg4 5.Nbd2 e6 6.c3 Bd6 7.g3 0-0 8.Bg2 Nbd7 9.h3 Bh5 10.g4 Bg6 11.e3 Ne4 12.h4 f5 13.Ne4 fe4 (13...de4?! 14.Ng5 Qf6 15.Qb3 fg4 16.Qe6 Kh8 17.Qf6 Nf6 18.Ne6+=) 14.Nd2 Qf6 15.Qe2 e5 16.h5 Bf7 17.0-0-0 a5 18.a3 ab4 19.cb4 b6 (19...ed4 20.ed4 Bf4 21.f3 ef3 22.Bf3-+) 20.g5? (20.de5 Be5 21.Ne4 de4 22.Rd7-/+) 20...Qg5-+ 21.Rdg1 Qf6 22.f3 ef3 23.Nf3 c5 24.Bh3? Be6 25.Be6 Qe6 26.Ng5 Qf5 27.Rg2?? cb4-+ 28.Rhg1 Rac8 29.Kd1 Qb1 (29...Qb1 30.Kd2 Qb2 31.Ke1 Qc1 32.Qd1 Qe3 33.Re2 Qg1 34.Kd2 Rf1 35.Qb3 Qd4 36.Qd3 Qb2 37.Qc2 Rc2 38.Kd3 Qc3) 0–1. Hedlerfog,Robert – Astroem,Lars (1795), Politiken Cup, Copenhagen DEN, 2010.

4.c3 e6 5.e3 Be7 6.Bd3 0-0 7.Qc2 Nbd7 8.Bd2 b5 (8...Bd6 9.c4=+) 9.a3 Nb6 10.0-0 Nc4 11.Re1 a5 12.Bc4 bc4 13.e4 (13.ba5 Qa5 14.Ne5 Qc7-/+) 13...ab4 14.e5 (better 14.cb4!? Ne4 15.Nc3 Nd2 16.Qd2-/+) 14...b3-+ 15.Qb2 Ne4 16.Be3 f6 (16...c5 17.Nfd2 Nd2 18.Qd2 cd4 19.Bd4-+) 17.Nbd2 (17.ef6!? gf6 18.a4-+) 17...f5 18.Ne4 fe4 19.Nd2 Bg5 (19...Ra4 20.Red1-+) 20.Bg5 Qg5 21.Nf1 Bd7 22.Ne3 Rf7 23.Qe2 Raf8 24.Rf1 Be8 (24...c5 25.a4-+) 25.g3? (25.Qd2!? Qh5 26.a4-+) 25...Rf3 26.a4 Bh5 27.Qe1 (27.Qd2 Qe7-+) 27...Bg4 28.Ng4 (28.Qd2 Qh5 29.a5-+) 28...Qg4 29.a5 (29.Qd2 Qh3 30.Qg5-+) 29...e3! 30.a6 (30.fe3 Rf1 Pinning (30...Rf1 Deflection)) 30...ef2 31.Rf2 Rf2 32.Qf2 Rf2 33.Kf2 (33.a7 Rf8 34.a8Q Ra8 35.Ra8 Kf7-+) 33...Qf5 34.Kg2 b2 35.a7 ba1Q (35...ba1N?! 36.a8Q Kf7 37.Qa7 Kg6 38.Qa1-+; 35...ba1B?! 36.a8Q Kf7 37.Qa7 Kg6 38.Qa1-+) 36.a8Q Qa8 37.h3 (37.g4 Qg4 38.Kf2 Qa2 39.Ke3 Qae2) 37...Qa2 38.Kg1 Qfb1 0-1. jiacomo (1825) - BeepBeepImAJeep (2655), Weekly Bullet Arena, lichess.org, 2017. (=1.d4 d5 2.Nf3 c6 3.b4 Nf6)

4.c3 g6 5.Bg5 Nbd7 6.Qc1 Bg7 7.Bh6 0-0 8.Bg7 Kg7 9.Qg5 (9.e3 e5=) 9...Qc7 (9...Ne4 10.Qh4+=) 10.h3 (10.e3 Re8=) 10...Re8 11.a3 e5 12.de5 Ne5 13.Ne5 Qe5 (13...Re5 14.Qd2-/+) 14.Qd2 (14.Qe5 Re5 15.Nd2 a5=) 14...Ne4 15.Qd4 Bd7 16.e3 f5 17.Qe5 Re5 18.Bd3 Rae8 19.0-0 Nf6 (19...g5 20.Rd1+=) 20.Nd2= h6 21.Nf3 R5e7 ½–½. capacuba (2175) – rhand (2295), net–chess.com, 2010.

4.e3 Nbd7 5.Nbd2 Qc7 6.Bb2 e5 7.de5 Ng4 8.e6 fe6 9.h3 Ngf6 10.a3 Be7 11.Ng5 Ne5 12.f4 Ng6 13.Bd3 Nf4 14.ef4 Qf4 15.Ngf3 Qg3 16.Kf1 Bd6 17.Qe1 0-0 18.Qg3 +/–. marus1 – mantoon, internet, 2001.

4.e3 Bf5 5.c4 dc4 6.Bc4 e6 7.a3 Bd6 8.Bb2 Nbd7 9.0-0 Qe7 10.Nc3 e5 11.e4 Bg4 12.Re1 (12.d5 a5 13.dc6 bc6=) 12...Bf3=+ 13.gf3 0-0 14.Ne2 Nb6 15.Bb3 ed4 16.Nd4 (better 16.Qd4!? Rfe8 17.Ng3=) 16...Qe5-/+ 17.f4 (better 17.Nf5!? Qh2 18.Kf1-/+) 17...Qf4-+ 18.Nf3 Ng4?? (better 18...Ne4 19.h3 Rfe8-+) 19.e5 (19.Qd4 Nf6 20.Qd1 Ne4-+) 19...Bc7 20.h3 Nh6 21.Bc1 Qf5 22.Bh6 gh6 23.Kg2 (23.e6 Nd5 (worse 23...Qh3 24.ef7 Rf7 25.Bf7 Kf7 26.Qb3 Kf8 27.Qe6 Qf3 28.Qe7 Kg8 29.Qc7=) 24.Bd5 cd5=+) 23...Qg6 24.Kh2 Be5?? (better 24...Kh8 25.Bc2 Qg7=+) 25.Ne5+- Qf5 26.Rg1 Kh8 27.Qd4 (27.Qd4 f6 28.Nf7 Rf7 29.Bf7+-) 1-0. the_combinator (2165) - claudiaortega (2085), Rated Blitz game, lichess.org, 2013. (=1.d4 Nf6 2.Nf3 d5 3.b4 c6)

4.e3 Bg4 5.Be2 e6 6.a3 Nbd7 7.0-0 Bd6 8.Nbd2 b5 9.Bb2 Qc7 10.h3 Bh5 11.c3 0-0 12.Re1 e5 (12...a5!?+=) 13.de5= Ne5 14.Ne5 Be2 15.Qe2 Be5 16.Nf3 Nd7 17.Qc2 Bf6 18.e4 Ne5 (18...Rfe8 19.ed5 cd5 20.Re2+=) 19.Ne5 Be5 20.Rad1 Rad8 21.a4 a6 22.ab5 ab5 23.ed5 Rd5 24.Rd5 cd5 25.Qd3 Qb8 26.Qd5 Bf6 27.Qe4 h6 28.g3 Rd8 29.Kg2 Qc7 Exerts pressure on the backward pawn 30.Re2 Rc8 (30...Bc3?? 31.Rc2+–) 31.Rc2 Qb6 32.Qf3 Rc4 33.Re2 Qb8 34.Qd3 Qb7 35.Kh2 Qc6 36.Re3 g6 37.Qe2 Kg7 38.Qf3 Qc8 39.Kg2 Qb8 40.Rd3 Qc8 41.Qd5 Qc6 (41...Qa6 42.Rd1+=) 42.Qc6+/– Rc6 43.Kf1 Kf8 44.Ke2 Ke7 45.Kd2 h5 46.Kc2 Ke6 47.Bc1 Be7 48.Kb3 f5 49.h4 Rc4 50.Be3 Bd6 51.Rd4 Rc6 (51...Rd4!? 52.cd4 Kd5+/–) 52.Bf4 Be7 53.Rd3 Bf6 54.Be3 Be7 55.Bd4 Bf8? (better is 55...f4+/–) 56.Re3+– Kd7 57.Re5 f4 58.Rb5 1–0. Guillaumat,Jean Pierre (1965) – Chabeaud,Jean Jacques (1835), FRA–ch Veterans, 2008. (=1.d4 d5 2.Nf3 Nf6 3.b4 c6)

4.Bf4 e6 5.c3 Nbd7 6.Ne5 Qe7 7.h3 Nh5 8.g3 g6 9.Qd2 f6 10.Nd3 g5 11.Bc7= f5 12.g4 Nhf6= 13.Qg5 Rg8 14.Qf4 Bg7 15.gf5 Nh5 16.Qg4?? Ndf6-+ 17.Qg5 Qc7 18.fe6 Be6 19.Nc5 Qd6 20.Nb7 Qe7 21.Na5 Qf8 22.Nc6? Bf7?? 23.e3 Bh6? 24.Qe5+– Kd7 25.Bb5 Rg5?? 26.Na7 Kd8+– 27.Nc6 Kc8 28.Ne7 Kb7 29.Qd6 Qd8 30.Bc6 Ka7 31.Qc5 Ka6 32.Qb5 Ka7 33.Qb7# 1–0. maftei – gordiemac, ChessWorld.net, 2009.

4.Bf4 Bf5 5.e3 e6 6.a3 Ne4 7.Bd3 Bd6 8.Bd6 Nd6 9.0-0 Bd3 10.Qd3 Ne4 11.c4 0-0 12.Rd1 Nd7 13.Nbd2 Ndf6 14.Ne5 dc4 15.Ndc4 Qc7 16.Rac1 Rad8 17.Qc2 a6 18.a4 Nd6 19.Nb2 Nd5 20.Nbd3 Qe7 21.a5 f6 22.Nf3 Qf7 23.h3 Qg6 24.Nc5 Rf7 25.Qg6+/– hg6 26.Rd2 Re8 27.e4 Nb4 28.Rb2+– Nd3 29.Nd3 Ne4 30.Re2 Nd6 31.Nf4 e5 32.de5 fe5 33.Ng6 e4 34.Nfe5 Kh7 35.Nf7 Nf7 36.Nf4 Ng5 37.Rc5 Kh6 38.h4 Nf7 39.Rh5# 1–0. marekt – Guest, internet, 2003.

4.b5 Na5 5.e3 c6 6.c4 Nc4 7.bc6 bc6 8.Bc4 dc4 9.Qa4 Bd7 10.Ba3 c5 11.Qc4 cd4 12.Qd4 e6 13.Bf8 Rf8 14.0-0 Qc7 0–1. bispo (2000) – krinkx (2020), net–chess.com, 2011.

4.b5 Nb8 5.Nbd2 Bd7 6.Rb1 e6 7.e3 Bd6 8.c4 dc4 9.Nc4 Be7 10.Bd3 0-0 11.0-0 c5 12.bc6 Bc6+= 13.Nce5 b6 14.Qc2 Bb7 15.Bd2 Nbd7 16.Nc6 Bc6 17.Qc6 Rc8 18.Qb5 h6 19.e4 Nh7 20.e5 Nb8 21.Rfc1 Qd7 22.Qd7+– Nd7 23.Bb5 Nb8 24.Bd3 Ng5 25.Ng5+/– hg5 26.h3 Rfd8 27.Rc8 Rc8 28.Rb3 g6 29.Rc3 Rc3 30.Bc3 a5 31.Kf1 Kg7 32.Bb5 Bb4 33.Bb4 ab4 34.Ke2 Kf8 35.Kd3 Ke7 36.Kc4 f6 37.ef6 Kf6 38.Kb4 Ke7 39.Kc3 Kd6 40.Kd3 Kd5 41.Bc4 Kd6 42.Ke4 Nd7 43.f4 Nf6 44.Ke3 gf4 45.Kf4 Nd5? 46.Bd5 Kd5 47.Kg5 Kd4+/– 48.Kg6 e5 49.h4 e4 50.h5 e3 51.h6 e2 52.h7 e1Q 53.h8Q Kd3 54.Qd8 Kc2 55.Qc7 Kd1 (56.Qd6 Kc2+–; 55...Kb2 56.Qb6 Ka2 57.Qa7 Kb3 58.Qf7 Ka4 59.Qd7 Kb4 60.g4+–). themonkey – NN, GameColony.com, 2002.

4.b5 Nb8 5.e3 c6 6.Bd3 g6 7.0-0 Bg7 8.a4 0-0 9.Nbd2 cb5 10.ab5 Nbd7 11.c4 dc4 12.Nc4 Nb6 13.Nb6 Qb6 14.Ba3 Re8 15.Bc5 Qc7? (15...Qe6!?+/–) 16.b6! Qc6?? (16...ab6 17.Ra8 Pinning (17.Ra8 Deflection)) 17.Ne5 Qe6 (17...Bg4 18.Nc6 Bd1 19.Ne7 (19.Rad1?! ab6 20.Ne7 Kh8+–; worse is 19.ba7 bc6 20.Rfd1 Nd7+–) 19...Kh8 20.Ra7+–) 18.Bc4 Qf5 19.Bf7 Kf8 20.Ra7 Be6 21.g4 Qg5 (21...Ng4 22.Be6 Qe6 23.Qg4 Qg4 24.Ng4 h5 25.Rb7 Kf7 26.Ne5 Be5 27.de5 Rac8+–) 22.Be6 1–0. capablancaven – spengler, gameknot.com, 2011.

4.a3 ed4 5.Qd4 a5=+.

4.a3 e4=+ 5.Ne5 Bf5 6.e3 Nbd7 7.Nd7 Qd7 8.h3 (8.c4 dc4 9.Bc4 Bd6=+) 8...Bd6-/+ 9.Nc3 0-0 10.Be2 b6 11.Bb5 Qe6 12.0-0 (12.Ba6 c6=+) 12...a6 13.Ba4 b5 14.Bb3 Bh3 (better is 14...c6!?-/+) 15.gh3= Qh3 16.f4 ef3 17.Kf2?? (better is 17.Rf3 Qg4 18.Kf1=+) 17…Qg3# 0–1. pillsbury (1910) – cruciverbalist (2160), net–chess.com, 2007.

4.a3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d4).

4.a4 Bb4 5.c3 Bd6 6.Bg5 (6.Ba3 Nc6-/+) 6...h6 7.Bf6 Qf6 8.Na3 Ba3 (8...c6!?-+) 9.Ra3-/+. bouffant – dgall, net–chess.com, 2002.

4.c3 a5 5.b5 a4 6.Bg5 Nbd7 7.e3 Nb6 8.Be2 h6 9.Bh4 Be7 10.0-0 Ne4 11.Nbd2?? (better 11.Be7 Qe7 12.Bd3+=) 11...Bh4 (11...Nd2 12.Be7 Nf3 13.Bf3 Qe7 14.e4-+) 12.Nh4? (12.Ne4 de4 13.Nd2 f5-+) 12...Qh4 (better 12...Nc3!? 13.Qe1 Qh4 14.Rc1 Ne2 15.Qe2-+) 13.Ne4 Qe4 14.c4 (14.Bd3 Qh4-+) 14...Qg6 (better 14...dc4!? 15.Rb1-+) 15.Rc1 dc4 16.Bc4 0-0 (16...Qg5 17.Bd3-+) 17.Bd3 Qg5 18.Bb1 (18.Rc7 Nd5 19.Rc2 Rd8-+) 18...c6 (18...Nd5 19.a3-+) 19.Qc2 g6 20.bc6 Nd5 21.cb7 Bb7 22.e4? (22.Qd2-+) 22...Nf4 23.g3 Nh5 (better 23...Rac8 24.Qb2 Rc1 25.Rc1 Ne2 26.Qe2 Qc1 27.Qf1 Qb2-+) 24.h4 Qg4 25.e5?? (25.Qd1 Qh3 26.Qf3-+) 25...Ng3! 26.fg3 (26.fg3 Qg3 Mate attack) 26...Qg3 27.Qg2 Qg2 0-1. Arseniy_Otlyotov (2130) - almasssss (2155), Rated Bullet game, lichess.org, 2020. (=1.d4 d5 2.Nf3 e6 3.b4 Nf6)

4.c3 a5 5.b5 c6 6.bc6 bc6 7.a4 Ba6 8.Na3 Nbd7 9.Qc2 Bd6 10.c4 Ba3 (10...Bb4 11.Bd2-/+) 11.Ra3 (11.Ba3 Bc4 12.Nd2 Nb6=) 11...Bc4=+ 12.Nd2 Nb6 13.Nc4 Nc4 14.Rc3 0-0 15.e3 Ne4 (15...Nd6=) 16.Rb3?? (better 16.Rc4 dc4 17.Qe4+/-) 16...Ncd6 (better 16...Qg5-/+) 17.Qc6?? (better 17.Bd3=) 17...Rc8-+ 18.Qc8 (18.Rb6-+) 18...Qc8 19.Rb1 Nf2! 20.Kf2 (20.Ba6 Qc2 21.0-0 Qb1 22.Kf2 Qc2 23.Kg1 Rb8-+) 20...Qc2 21.Be2 Qb1 (better 21...Ne4 22.Kf3 Nc3 23.Kg3 Ne2 24.Kf3-+) 22.Ba3 (22.Rd1 Ne4 23.Ke1 Nc3-+) 22...Qf5 (better 22...Ne4 23.Kf3 Qh1 24.Bd6-+) 23.Bf3 Ne4 24.Ke2 Rc8 25.Be4 Qe4 26.Rg1 Rc2 27.Kd1 (27.Ke1 Qe3 28.Kd1 Qe2) 27…Qd3 (27...Qd3 28.Ke1 Qe2) 0-1. Aleks - Mate96 (2230), lichess.org, 2020. (=1.d4 Nf6 2.Nf3 d5 3.b4 e6)

4.c3 b6 5.a4 c5 6.bc5 bc5 7.Bd2 Nc6 8.e3 Ne4 9.Bb5 Bd7 10.Bc1 Be7 11.Nfd2 1–0. jaortiz (2285) – capivaramartins (2260), net–chess.com, 2013. (=1.d4 d5 2.Nf3 Nf6 3.b4 e6)

4.c3 b6 5.a4 Bd6 6.g3 0-0 7.Bg2 c5 8.b5 a6 9.Na3 cd4 10.cd4 Bb4 11.Bd2 Ba3 (11...Qd6 12.Qb3 Bd2 13.Nd2=) 12.Ra3= ab5 13.Bb4 Nc6 (13...Re8!? 14.ab5 Ra3 15.Ba3 Qc7=) 14.ab5+= Ra3 15.Ba3 (15.Bf8 Qf8 (15...Kf8?! 16.bc6 Qd6 17.Qb1+=) 16.bc6 Qb4 17.Nd2 Ra2-+ (17...Qd4?! 18.0-0-+)) 15...Ne7 16.0-0 Re8 17.Ne5 Ne4 18.Qc2 Nd6 19.Rc1 f6 20.Bd6 Qd6 21.Nc6 Bd7 22.e4 de4 23.Be4 Nf5 24.d5 g6 25.Bf5 ef5 26.Qd2 f4 27.gf4 (27.Re1 Re1 28.Qe1 Qc5+=) 27...Re4= 28.f3 Rf4 29.Qe3 Rh4 30.Rc2 (30.Qb6?? Qh2 31.Kf1 Qh1 32.Ke2 Rh2 33.Kd3 Qf3 34.Kc4 Qe2 35.Kc5 Qe3 36.Kd6 Qb6 (36...Qc1?! 37.Qd8 Kg7 38.Qd7 Kh6 39.Kc7=) 37.Kd7 Qb5-+) 30...Rh5 31.Qb6 (better is 31.Rd2!?=) 31...Rd5-/+ 32.Qe3?? (better is 32.Rc1-/+) 32...Rg5-+ 33.Kf1 0–1. Kytoniemi,Jyrki (2220) – Kokkila,Tero (2210), FIN–chT, 1996. (=1.d4 d5 2.Nf3 Nf6 3.b4 e6)

4.c3 b6 5.e3 Bb7 6.Nbd2 Nc6 7.Bd3 g6 8.h4 Bb4 9.cb4 Nb4 10.Qa4 Nc6 11.Bb5 Qd7 12.Ne5 Qd6 13.Ba3 Qd8 14.Bc6 Bc6 15.Qc6 Nd7 16.Nd7 Qd7 17.Qa8 Qd8 18.Qa7 f5 19.Rc1 h5 20.Rc7 1–0. pozarski (2025) – borje (1620), GameColony.com, 2002.

4.c3 c6 5.a3 Nbd7 6.Nbd2 Bd6 7.g3 (7.c4 0-0=) 7...0-0 8.Bg2 Re8 9.0-0 e5 10.e3 (10.c4!?=+) 10...e4-/+ 11.Ne1 b6 (11...Nb6 12.f3 ef3 13.Qf3-/+) 12.c4=+ Ba6 (12...a5 13.cd5 cd5 14.b5=+) 13.Qc2 Rc8 14.Bb2 Nf8 15.Qb3 White plans b5 15...Ng6 (15...Qe7 16.Rc1=+) 16.a4 White intends b5 (16.Rc1 Rc7=) 16...Rc7 17.b5 Bb7 18.bc6 (18.f3 ef3 19.Bf3 Rce7=) 18...Bc6-/+ 19.Ba3 Ba3 20.Ra3 dc4 21.Qc4 Bd5 (better 21...Bb7!? 22.Qe2 Qc8-+) 22.Qb4=+ Qd7 23.a5 b5 24.a6 Rec8 25.Nb3? (25.f3 ef3 26.Nef3 Rc2=+) 25...Rc4 (better 25...Bc4!? 26.Nc5 Qe8-+) 26.Qa5-/+ b4 27.Ra1 Qc7 28.Qc7 R8c7 (28...R4c7 29.Nc5-/+) 29.Nc5 Nd7 (better 29...Rc3-/+) 30.Ne4+= (worse 30.Be4 R4c5 31.Bg6 Rc3=) 30...f5? (30...b3 31.Rb1 Rb4 32.Nd3+/-) 31.Nd2 (better 31.Nd6!? Bg2 32.Kg2+-) 31...Bg2+/- 32.Kg2 R4c6 (better 32...Rc3!?+/-) 33.Nd3+- Rb6 34.Nb3 Rc3 35.Ndc5 Ne7?? (35...Nc5 36.Nc5 Rb8 37.Rfb1+/-) 36.Rfc1 (better 36.Nd7 Rb5 37.Ndc5+-) 36...Nc5+/- 37.Nc5 Nd5 Black prepares b3 38.Kf3 b3 (better 38...h5+/-) 39.Rc3?? (better 39.Rcb1 g5 40.g4 fg4 41.Kg4+/-) 39...Nc3-/+ 40.Nb3 Rb3 41.Rc1 Kf7 42.Kf4?? (42.g4 Ke6-/+) 42...Kf6 (better 42...Ne2 43.Kf5 Nc1 44.Ke4-+) 43.g4?? (43.Kf3 Ke6-/+) 43...g5 (better 43...Ne2 44.Kf3 Nc1-+) 44.Kf3-/+ fg4 45.Kg4 Kg6 46.Kf3 h5 47.h3 Kf5 Black prepares the advance g4 48.Rg1? (better 48.Kg2!?-/+) 48...Ne4 49.h4? (49.Ra1 g4 50.hg4 hg4 51.Kg2-+) 49...g4 (49...gh4?! 50.Ra1 Ng5 51.Kg2 h3 52.Kg3 Ne4 53.Kh3 Nf2 54.Kg3 Ne4 55.Kh4 Re3 56.Ra5 Kf4 57.Kh5-+) 50.Kg2 Rb2 51.Rf1 (51.Kh2-+) 51...Nd2 (better 51...g3 52.Kh3 gf2-+) 52.Re1 (better 52.Rc1 g3! 53.Rc5 Kg4 54.Rg5 Kh4 55.Rf5 gf2 56.Rf2-+) 52…Nf3 (52...Nf3 53.Rh1 Ra2-+) 0-1. Secjacek (2040) - BeepBeepImAJeep (2655), lichess.org, 2017. (=1.d4 Nf6 2.Nf3 e6 3.b4 d5)

4.c3 Nc6 5.Bb2 (5.e3 Ne4=) 5...Bd6 6.Nbd2 0-0 7.b5 Ne7 (7...Na5 8.e3=+) 8.c4 dc4 9.e4 Bb4 10.Qc2 (better is 10.e5 c3 11.ef6 gf6 12.Bc1=+) 10...b6 (better is 10...Ne4 11.Bc4 Nd2 12.Nd2 Nf5-+) 11.Bc4 Bb7 (11...a6 12.a4=) 12.0-0 Ng6 (12...c6 13.a4+=) 13.a3 Bd2 14.Nd2 Ng4 (14...Rc8 15.Rfe1+=) 15.Nf3 (15.Be2 Qg5 16.Bc1 Nf4+=) 15...Nf6 (15...a6 16.a4+/–) 16.Rfe1 c6 17.e5 (17.bc6!? Bc6 18.Ba6+/–) 17...Nd5 (17...cb5 18.ef6 bc4 19.fg7=+) 18.Qe4 (18.bc6 Bc6 19.Ba6 Qd7=) 18...Rc8 (18...cb5 19.Bb5 a6 20.Bf1=) 19.bc6 (19.Bd5 ed5 20.Qd3 Qd7=) 19...Bc6 20.Qg4 Ndf4 21.Ba6 (21.Bf1 Bf3 22.Qf3 Rc2=) 21...Ng2-/+ 22.Qg2 Nh4 23.Nh4 Bg2 (24.Ng2 Rc2=+). Goudreau,Alec – Cornell,David, IECG, 1995.

4.c3 Bd6 5.g3 0-0 6.Bg2 Nbd7 7.0-0 h6 8.Re1 c6 9.Nbd2 Qc7 10.Qc2 e5 11.e4 Re8 12.de5 Ne5 13.ed5 cd5 14.Ne5 Be5 15.Nf3? (better is 15.Bb2!?+=) 15...Qc3-+ (worse is 15...Bc3 16.Bb2 Re1 17.Re1+/–) 16.Qa4?? (better is 16.Qc3 Bc3 17.Re8 Ne8 18.Rb1-+) 16...Bd7 17.b5 Qa1 18.Bh6 Qc3 (worse is 18...gh6 19.Ra1 Ba1 20.Qd1-+) 19.Bg5 (19.Bd2 Qd3 20.Re3 Qf5-+) 19...Ne4 20.Ne5 (20.Be3-+) 20...Qe1 21.Bf1 Qf2 (21...Qf2 22.Kh1 Qf1) 0–1. tche (2390) – sbeaul (2470), net–chess.com, 2016.

4.c3 Bd6 5.Bg5=+.

4.c3 Bd7 5.Qb3 Bb5 6.Na3 Bd7 7.e3 a6 8.Bd3 b5 9.0-0 c6 10.Ne5 Bc8 11.g3 Nbd7 12.Nc6 Qc7 13.Na5 Ng4 14.e4 Bb7 15.Nb7 Qb7 16.ed5 Qd5 17.Qd5 ed5 18.Re1 Be7 19.Bf5 Ngf6 20.Bf4 h6 21.Bd6 Ne4 22.Be4 1–0. mtrc – IMTHELIZARDKING, internet, 2002.

4.c3 Be7 5.h3 a6 6.Bf4 Nc6 7.Nbd2 h6 8.e3 Bd7 9.Bd3 Bd6 10.0-0 0-0 11.a4 Na7 12.Bd6 cd6 13.c4 dc4 14.Nc4 d5 15.Nce5 Qb6 16.Qb1 Nc6 17.b5 ab5 18.Bb5 Ne5? (18...Qa5 19.Rc1+=) 19.Ne5?? (better is 19.de5 Bb5 20.ef6+– (20.ab5?! Ra1 21.Qa1 Ne4=; 20.Qb5?! Qb5 21.ab5 Ne4=)) 19...Bb5 20.Qb5 Qb5 21.ab5 Ne4 22.f3 Nc3 23.b6 Ra6?? (better is 23...Na4=) 24.Ra6+– ba6 25.Ra1 (25.Nd7!? Re8 26.b7 Nb5+–) 25...Rb8 26.Ra6 Nb5 (26...Rb7 27.Nd3 Na4 28.Ra4 Rb6 29.e4+–) 27.Nd7 Rb7 28.Nc5 Rb8 (28...Nc7 29.bc7 Rc7+–) 29.b7 Nc7 (29...Kh7 30.Ra8 Rb7 31.Nb7+–) 30.Rc6 (30.Rc6 Rb7 31.Nb7+–) 1–0. Nguyen,Huy (1720) – Wasserman,Leor, Winnipeg TNT January op, 2007. (=1.d4 d5 2.Nf3 Nf6 3.b4 e6)

4.Nc3 a6 5.e3 (5.a3 Nc6=) 5...Nc6 (better is 5...Bb4!? 6.Bd2 c5-/+) 6.a3= Bd6 7.Bd3 0-0 8.0-0 b5 (8...e5 9.de5 Ne5 10.Ne5 Be5 11.Qe1+=) 9.Re1 (9.e4 de4 10.Ne4 Nd5+=) 9...Bd7 (9...e5!? 10.Ne5 Ne5 11.de5 Be5+=) 10.e4= de4 11.Ne4 Ne7 (better is 11...Ne4!? 12.Be4 a5=) 12.Nf6+/– (worse is 12.Nd6 cd6 13.Bg5 Nfd5=) 12...gf6 13.Re4 (13.Ne5!? Ng6 14.Nd7 Qd7 15.h4+/–) 13...Ng6+= 14.Bh6 Re8 15.Re1 c6 16.h4 e5 (better is 16...Qc7!?+=) 17.h5+– Ne7? (17...Nf4 18.de5 Be5 (18...fe5?? 19.Bf4 ef4 20.Bh7 Kh7 21.Qd6+–) 19.Ne5 fe5+–) 18.de5 fe5 19.Ne5 Be5 20.Re5 Qc8 (20...f6 21.Re1 Nd5+–) 21.Qd2 (21.Qf3 Bf5 22.Bf5 Qf5 23.Rf5 Ng6 24.Qc6 f6 25.Qd5 Kh8 26.Qf7 Re1 27.Re1 Rg8 28.Qf6 Rg7 29.Qg7) 21...Kh8 22.Qg5 Rg8 (22...Nf5 23.Bf5 Rg8 24.Qf6 Rg7 25.Qg7) 23.Qf6 (23.Qf6 Rg7 24.Qg7; 23.Re7?! Rg5 24.Bg5 Kg8+/–) 1–0. itsmenow (2040) – hcabrera (2080), net–chess.com, 2015.

4.Nc3 Ne4 5.Qd3 (5.Bd2!? Nd2 6.Qd2 Bb4 7.a3-/+) 5...Bb4-+ 6.Bd2 Nd2 (6...Nd2 7.Nd2 c5-+) 0–1. Baum,Sebastian (1710) – Kueppers,Michael (1995), remoteschach.de, 2001.

4.e3 Bb4-/+ 5.c3 Bd6 6.Bd3 0-0 7.Qc2 Bd7 8.Ng5 h6 9.Nf3 Nc6 10.0-0 Na5 11.Bb2 b6 12.Nbd2 c5 13.Ne5 (13.dc5 Bc5 14.c4 Rc8-/+) 13...c4 14.Be2 Bb5 15.Nef3 (15.a4 Ba6-/+) 15...Nd7 (15...Bc6 16.Ne5-/+) 16.a4 Bc6 17.Ba3 Ba3 18.Ra3 b5 (18...Qf6!?-/+) 19.ab5=+ Bb5 20.Qb2 Bc6 (20...Rb8!?=+) 21.Qa2 Rb8?? (better is 21...Nb7 22.Ra7 Ra7 23.Qa7 Qc7=) 22.Ra5+– Nb6 23.Ne5 f6 24.Nc6 Qc7 25.Na7 Ra8 26.Nb5 Qc6 27.Na7 Qd7?? 28.Nb5 Ra5?? 29.Qa5+– Ra8 30.Qb6 (30...Ra2 31.Rd1+–) 1–0. Neffgen,Dieter – Pieleck,Andreas, RSX9E – A00 – Sokolsky–1, 2002.

4.Bb2 e6 5.a3 a5 6.b5 c5 (6...Be7 7.e3+=) 7.dc5= Bc5 8.e3 Nbd7 9.Nbd2 Qe7 10.Bd3 Bg4 11.h3 Bh5 12.g4 Bg6 13.0-0 e5 14.g5 (14.Nh4!?+=) 14...Ne4-/+ 15.Nb3 Bd6 16.h4 h6 17.gh6 Rh6 18.Be2 (18.Kg2 Bh5 19.Rh1 a4-+) 18...Nb6 (18...Bh5 19.Re1 Qf6-+) 19.Qe1? (19.Nc1 Bh5 20.Ng5 Be2 21.Ne2 Ng5 22.hg5 Qg5 23.Ng3 Qh4-+) 19...a4 (19...Bh5 20.Kg2 Rg6 21.Ng5 Be2 22.Qe2 Ng5 23.Rh1 Ne4 24.Kf1-+) 20.Nc1 (20.Nbd2-+) 20...Bh5 21.Be5 (21.Kg2 Nc4 22.Ra2 Bf3 23.Bf3 Rg6 24.Bg4 Qh4 25.Ne2 Ne3 26.Kf3 Nf1 27.Kg2 Ne3 28.Kf3 Nc2 29.Ng3 Qg4 30.Kg2 Ne1 31.Kf1 Ng3 32.fg3 Rf6 33.Ke1 Qg3 34.Ke2 Rf2 35.Kd1 Qg1) 21...Be5 22.Ne5 (22.Ng5 Ng5 23.f4 Nh3 24.Kg2 Ba1 25.Bh5 Rh5 26.Kh3 Nc4-+) 22...Qe5 (22...Qh4 23.f4 Qh1 24.Kh1 Bf3 25.Kg1 Rh1) 23.f4 (23.Kg2 Qa1 24.Bh5 Rh5-+) 23...Qa1 24.Bh5 Rh5 25.Qe2 Rh4 26.Nd3 Qf6 27.Qg2 Nc4 28.Re1 0-0-0 29.Kf1 Rdh8 30.Qf3 Ncd2 31.Ke2 Nf3 32.Kf3 Rh2 33.f5 R8h3 34.Kf4 g5 35.Kg4 Rh4 36.Kf3 Qf5 (36...Qf5 37.Nf4 g4) 0–1. Bezukladov,OD – Lopatskaya,Elena V, Moscow–ch op, 1995. (=1.d4 Nf6 2.b4 d5 3.Nf3 Bf5)

4.Bb2 e6 5.a3 Bd6 6.Nbd2 0-0 7.e3 Nbd7 8.Be2 Ne4 9.c4 c6 10.0-0 Qf6 11.Ne4 de4 12.Nd2 Qh6 13.g3 Nf6 14.Re1 Rad8 15.Nf1 (15.b5 cb5 16.cb5 Rc8=) 15...Qg6 16.f4 (16.Nd2!?+=) 16...ef3-/+ 17.Bf3 h5 18.Qe2 Bd3 19.Qg2 Bc4 20.Nd2 Ba6 21.e4 Bc7 22.Rac1 Bb6 23.Nb3 e5 24.Qf2 (24.Rcd1!?-/+) 24...h4 25.a4 (25.Rcd1 Nh7 26.Bg2 Ng5-+) 25...hg3 (25...ed4 26.a5 Bc7 27.e5-+) 26.hg3 (26.Qg3!? Qg3 27.hg3 ed4 28.a5-+) 26...ed4 27.Bd4?? (27.a5 Bc7 28.e5-+) 27...Rd4! 28.Nd4 Rd8 (28...Bd4!? 29.Qd4 Qg3 30.Bg2-+) 29.Rc5 (29.Red1 Ne4 30.Be4 Qe4 31.Re1-+) 29...Bc5 30.bc5 Rd4! 31.e5 Ne4 32.Qd4 Qg3 33.Bg2 Qe1 34.Kh2 Qg3 35.Kg1 Ng5 36.Qd8 Kh7 37.Kh1 Qh4 38.Kg1 Nf3! (38...Nf3 39.Bf3 Qd8-+) 0–1. Gutierrez,O (2070) – Urbina Quiros,E (2100), San Jose CRI, Team Ch, 2012. (=1.Nf3 d5 2.d4 Nf6 3.b4 Bf5)

4.Bb2 e6 5.a3 Nbd7 6.Nc3 Bd6 7.e3 0-0 8.h3 (8.Be2 c6=+) 8...h6 (8...a5 9.ba5 Ra5 10.Be2-/+) 9.Bd3 Bd3 10.cd3 c6 11.0-0 Re8 (11...a5 12.b5=+) 12.Re1 e5 13.de5 Ne5 14.d4 (14.Na4!?=) 14...Nc4-/+ 15.Bc1 Ne4 16.Ne4 de4 17.Nd2 Nb6 18.Bb2 (18.f3 f5=) 18...Nd5=+ 19.Rc1 Qh4 20.Qg4 (20.Qe2 Re6=+) 20...Qg4-/+ 21.hg4 a6 22.Nf1 (22.Kf1 Nf6=+) 22...g6 (22...a5 23.ba5 Ra5 24.Nd2-/+) 23.Nh2 (23.Nd2 Rad8=+) 23...f5 (23...a5!? 24.ba5 Ra5-/+) 24.gf5 gf5 25.Nf1 Kf7 26.Nd2 Rg8 27.f3 (27.Kf1 Rad8=+) 27...Rae8 (27...ef3 28.Nf3 Rg3-/+) 28.f4 (28.fe4 fe4 29.Rf1 Kg6-/+) 28...Rg3 (28...Bf4 29.ef4 Nf4 30.Kf1 Ng2 31.Re2-+) 29.Nf1-/+ Rg4 30.Re2 Reg8 31.Rcc2 h5 32.Nh2 Rg3 33.Nf1 R3g6 34.Kh1 h4 35.Bc1 Ke6 36.Rf2 (36.Kh2 Kd7-/+) 36...Nf6 37.Rfe2 Nh5 (37...h3 38.Ra2-/+) 38.a4 (better 38.Bd2!?-/+) 38...Ng3 39.Ng3 hg3 (39...Rg3?! 40.Bd2-/+) 40.Kg1 Rh6 41.Red2 (41.Bb2-+) 41...Rgh8 42.Kf1 Rh1 43.Ke2 Rg1 (43...R8h2 44.d5 cd5 45.Rd5 Rg2) 44.b5 Rhh1 (44...Rhh1 45.d5 cd5 46.ba6 Rg2) 0-1. JAVANI (1905) - shaf (2205), Rated Blitz game, lichess.org, 2014. (=1.Nf3 d5 2.d4 Nf6 3.b4)

4.b5 e5 5.Ne5= Qe7 (5...Nbd7 6.Nd7 Qd7 7.e3=) 6.Ba3 (6.e3+=) 6...c5? (better is 6...Qa3!? 7.Na3 Bb4 8.Qd2 Bd2 9.Kd2 Ne4 10.Ke1 f6+=) 7.Bc5+– g6?? (better is 7...Qc7 8.Bf8 Rf8+–) 8.Be7 Be7 9.g4! 0-0 10.gf5 a6 11.fg6 fg6 12.e3 ab5 13.Nc3 Bb4 14.Qd2 Rc8 15.a3 Bd6?? 16.Bh3 Na6 17.Be6 Kh8 18.Nf7 Kg7 19.Nd6 Rd8 20.Nf7 Re8 21.Bh3 Kf7 22.Nb5 Ne4 23.Qa5 Nc7 24.Qc7 (24.Qc7 Re7 25.Qb6+–) 1–0. bouffant – darthvader, net–chess.com, 2002.

4.c3 e6 5.a4 Nbd7 6.Ba3 a5 7.Qb3 Bd6 8.Nbd2 Qe7 9.Rb1? (9.ba5!? Ba3 10.Qa3 Qa3 11.Ra3 Ra5 12.e3=) 9...0-0 (9...Bb1 10.Nb1 ab4 11.Bb4-+) 10.c4? (better 10.Rb2-/+) 10...ab4-+ 11.Bb4 Bb4 12.Qb4 c5 13.dc5 (13.Qb5 Bb1 14.Nb1 cd4 15.Nd4 dc4-+) 13...Nc5 14.Ra1 (14.Qb5 Bb1 15.Qb1 Ra4 16.cd5-+) 14...Nd3!! 15.ed3 Qb4 16.Be2 dc4 17.0-0 (17.dc4 Rfd8 18.0-0 Rd2 19.Nd2 Qd2-+) 17...cd3 18.Bd1 Rfc8 0-1. Aleks - Cornlub (2410), lichess.org, 2020. (=1.d4 d5 2.Nf3 Nf6 3.b4)

4.c3 e6 5.e3 Bd6 6.Bd3 0-0 7.a3 a5 8.b5 a4 (8...Bd3!? 9.Qd3 Ne4=+) 9.Bf5=+ ef5 10.Nbd2 Qe8 11.c4 dc4 12.Nc4 Qb5 13.Nd6 cd6 14.Bd2 Rc8 15.Rb1 Qd7 16.0-0 Ne4 17.Qe2 Nc6 18.Qb5 Rc7 19.d5 Ne5 20.Rfd1 (20.Qd7 Rd7 21.Bb4 Rc8=+) 20...Qb5-/+ 21.Rb5 f4 (better is 21...Nf3 22.gf3 Nd2 23.Rd2 Rc3-/+) 22.Bc1? (22.Ne5 Nd2 23.ef4 de5 24.d6-/+) 22...Nf3 (22...Nc3 23.Ne5 Nb5 (23...Nd1 24.Bd2 de5 25.ef4-+) 24.ef4 Nc3-+ (< 24...de5 25.d6 Nd6 26.Bb2-+)) 23.gf3 Nc3 24.Rb7 Rb7 25.Re1 (25.Rd2 Rb1 26.Rc2 Rc1 27.Rc1 Ne2 28.Kf1 Nc1-+) 25...fe3 26.fe3 Rb3 27.f4 f5 28.h4 Ne4 (29.Re2 Ra5-+) 0–1. Buresch,Rene – Baumann,Heinz, remoteschach.de, 2002.

4.c3 h6 5.Nbd2 e6 6.Nh4 Bh7 7.g3 a5 8.b5 a4 9.Nhf3 c6 10.Ne5 Qa5 11.Ndf3 Ne4 12.Bd2 cb5 13.Qc1 Nd2 14.Nd2 Bd6 15.Bh3 Be5 16.de5 0-0 17.Nf3 Rc8 18.0-0 Rc3 19.Qb2 a3 20.Qd2 Nc6 21.Rfd1 0–1. pierre – ruffig, internet, 2011.

4.c3 h6 5.Nbd2 e6 6.Nh4 Bh7 7.g3 Nbd7 8.Bg2 Be7 9.Qb3 0-0 10.0-0 b6 11.c4 c6 12.b5 c5 13.e3 g5 14.Nhf3 Be4 15.Ne4 Ne4 16.cd5 ed5 17.Qd5 Ndf6 18.Qc4 Qc7 19.Ne5 Rfc8?? (better is 19...Rac8+–) 20.Qf7 Kh8 21.Ng6# 1–0. usingprogram (2030) – vmi030 (1705), kurnik, 2011.

4.Nc3 Ne4 5.Ne5?? (better is 5.Bb2+=) 5...Nc3-+ 6.Bg5 (6.Qd2 Ne4 7.Qd3-+) 6...Nd1 7.Kd1 f6 8.Bf6 ef6 9.Nf3 Qd6 10.Nh4 Qb4 11.a3 Qd4 12.Kc1 Qa1 13.Kd2 Qd4 14.Ke1 Qc3 15.Kd1 Qc2 16.Ke1 Qc1 0–1. lady – _chess_ (1925), gameknot.com, 2011.

4.Nc3 e6 5.a3 Nc6+=.

4.Nc3 e6 5.b5 Bb4 6.Bd2 0-0 7.a4 (7.e3 a6=+) 7...c5 8.dc5 Bc5 9.a5 Nbd7 (9...Ne4 10.Ne4 de4 11.Ng1-/+) 10.Na4 (10.e3 Rc8 11.Bd3 Ne4=+) 10...Bd6-/+ 11.e3 Rc8 12.h3?? (better 12.Bd3-/+) 12...Bc2-+ (12...Rc2?! 13.Nd4 Rd2 14.Qd2-/+) 13.Qe2 Bb3 (better 13...Ne4 14.a6 Ng3 15.ab7 Rb8 16.fg3 Bg3 17.Qf2 Bf2 18.Kf2 Rb7-+) 14.b6 (14.Nd4 Bc4 15.Qd1 Bf1 16.Rf1 Ne4-+) 14...ab6 (better 14...Ne4 15.Qb5 Qf6-+) 15.ab6? (better 15.Nb6 Nb6 16.Qb5-+) 15...Ne4 (15...Ra8 16.Qb5 Nc5 17.Ba5 Ba4 18.Ra4 Na4 19.Qa4 Qb6 20.Bb6 Ra4 21.Bd4-+) 16.Qd3 (16.Qb5 Qf6 (16...Nd2?! 17.Nd2 Be5 18.Nb2-+) 17.Rb1 Ne5-+ (17...Nd2?! 18.Nd2 Bc2 19.Qd7 Bb1 20.Qd6 Rc1 21.Ke2-+)) 16...Bc4 (better 16...Ba4 17.Ra4 Ndc5 18.Qb5 Nd2 19.Nd2 Na4 20.Qa4 Rc1 21.Ke2 Qb6 22.Qb3-+) 17.Qd4 Nd2 18.Nd2 (18.Qd2 Nb6 19.Qb2 Na4 20.Ra4-+) 18...Bf1 (better 18...Be5 19.Qg4 Bf1 20.Rd1-+) 19.Nf1 Be5 20.Qb4 (20.Qd1 Ba1 21.Qa1-+) 20...Ba1 21.Nd2 0-1. Nimazlatan - Safifa (2240), Rated Classical game, lichess.org, 2014. (=1.d4 d5 2.b4 Nf6 3.Nf3)

4.Nc3 h6 5.a4 (5.a3 e6+=) 5...e6+= 6.Ba3 a6 (6...Nc6 7.Na2-/+) 7.Qb1 Be7 8.a5 0-0 9.Nd2 (9.e3 b5+=) 9...b6 10.Nb3 (10.ab6 cb6 11.b5 ab5 12.Nb5 Ba3 13.Ra3 Ra3 14.Na3 Qe7+=) 10...Nbd7 (better is 10...Nc6!? 11.Nd1 Nb4-+) 11.e3+= Re8 12.Bd3 Bh7 13.Bh7 Kh7 14.Qd1 Rc8 (14...e5 15.0-0=) 15.Nd2 (better is 15.Qd3 Kg8 16.Qa6 ba5 17.ba5+= (worse is 17.Qa5 Nb6+=)) 15...c5 16.Na2 (better is 16.bc5!? bc5 17.Nb3+=) 16...cd4-+ 17.ed4 b5 (17...ba5!? 18.c3-+) 18.0-0 Nf8 (18...Qc7 19.Rc1-/+) 19.Nf3 Ng6 20.Qd3 Kg8 21.Nc3 (better is 21.Ne5!?-/+) 21...Qc7-+ 22.Ne2 Qc2 23.Ne1 Qd3 24.Nd3 Ne4 25.Nc5 Rc6 26.Nd3 (26.Ne4 de4 27.Rfc1 Rc4-+) 26...Rc2 27.Ng3 (27.Rfe1 Bh4 28.Bc1 Ne7-+) 27...Ng3 28.fg3 Bf6 29.Rf6 gf6 30.Nc5 Ra8 31.Nd3 (31.Rf1 Kg7-+) 31...e5 (31...Rd2 32.Nc5-+) 32.Bc1 e4 33.Ne1 (33.Nc5 Kg7-+) 33...Rc4 34.Bh6 Rac8 35.Be3 (35.Rb1 Ne7-+) 35...Rb4 36.Rd1 Ne7 37.g4 Ra4 38.h4 Ra5 39.g3 Ra3 40.Bf2 (40.Bf4 Ra2-+) 40...b4 41.Ng2 b3 42.Be3 (42.Rb1 Rc1! 43.Rc1-+) 42...b2 43.Kh2 Ra1 44.Rg1 Rg1 45.Bg1 b1Q 46.h5 Rc1 47.h6 (47.Ne1 Re1 48.g5 Re2 49.Kh3 Qf1 50.Kh4 Nf5 51.Kg4 Qf3 52.Kh3 Qh5) 47...Rg1 48.Ne3 (48.h7 Kh7 49.Ne1 Qe1 50.Kh3 Qg3) 48...Rh1 49.Kg2 Qg1 0–1. rhometal (2115) – agostinhoarruda (2530), net–chess.com, 2014. (=1.d4 Nf6 2.b4 d5 3.Nf3 Bf5)

4.Nbd2 e6 5.a3 Bd6 6.Nh4 (6.c4 0-0=+) 6...0-0 (6...Ne4 7.Ndf3=+) 7.Nf5= ef5 8.g3 Re8 9.Bg2 c6 10.0-0 Nbd7 (10...a5 11.ba5 Qe7 12.c4=) 11.e3 Nf8 (11...b5 12.Nb3=) 12.Bb2 (12.c4 Qd7+=) 12...Ne6 13.c4 Bf8 (13...Ne4 14.Rc1=) 14.c5 b6 15.Nb3 a5 16.ba5 (16.Qc2!?+=) 16...bc5= 17.dc5 Nc5 18.Nd4 Qc8 19.Bc3 (19.Bh3!?=) 19...Nce4=+ 20.Bb4 (better is 20.Bb2!?=+) 20...c5-+ 21.Nc2? (better is 21.Rc1 Qd7 22.f3 cb4 23.fe4 fe4 24.ab4 Bb4 25.Rf6 gf6 26.Bf1 Ra5 27.Nc6-+) 21...cb4 22.ab4 Qc4 23.f3 Nc3 24.Qe1 Bb4 25.Nb4 Qb4 26.a6 Qb6 27.Qc3 Re3 28.Qc2?? Re2-+ (28...Re2 29.Qc5 Qc5 30.Kh1 Qb6-+) 0–1. mic (2215) – rr (2330), net–chess.com, 2007.

4.Nbd2 e6 5.c3 Nbd7 6.a4 Bd6 7.Qb3 Qe7 8.Ba3 0-0 9.c4 dc4 10.Nc4 e5 (10...Nb6!? 11.e3 Be4=+) 11.Nd6= cd6 (worse 11...Qd6 12.b5 Qb6 13.Bf8 Rf8 14.a5+- (14.Ne5? Qa5 15.Kd1 Ne5-+; 14.de5 Ne4 15.Qb4 Qf2 16.Kd1 Ne5 17.Ne5 Rd8 18.Nd3 Qe3-/+)) 12.de5 de5 13.b5 Nc5 14.Qb4 (14.Qe3!? Rfc8 15.Qe5 Qe5 16.Ne5=) 14...Rac8=+ 15.Rc1? (better 15.Rd1=+) 15...Nd3!!-+ 16.ed3 Rc1 17.Kd2 (17.Ke2 Qb4 18.Bb4 Re8-+) 17...Qb4 (17...Rfc8 18.Ne1 (18.Qe7?? R8c2 19.Ke3 Nd5) 18...Qb4 19.Bb4-+) 18.Bb4 Rfc8 (18...Rfc8 19.Ke2 R1c2 20.Bd2 Bg4-+) 0-1. Aleks (1825) - DiseasedDonkey (2180), Casual Rapid game, lichess.org, 2021. (=1.d4 d5 2.Nf3 Nf6 3.b4)

4.e3 Nbd7 5.Bd3 e6 6.Bf5 ef5 7.Ng5 (better is 7.a3!?=+) 7...Bb4 8.Bd2 Bd6 9.Nc3 h6 10.Nf3 Ne4 (10...c6 11.Rb1-/+) 11.Nd5=+ c6 12.Nf4 0-0 13.Ne5?? (better is 13.0-0=+) 13...Ne5-+ 14.de5 Be5 15.Nd3 Ba1 16.Qa1 Qh4 17.g3 Qg4 18.Ne5 (18.Qd1 Qg6-+) 18...Qh5 (better is 18...Qh3 19.Nd3 Qg2 20.Ke2-+) 19.Nd7 (19.Bb4 c5 20.Ba3-+) 19...Rfd8 20.Ne5 (20.Qd4 Ng5 21.Qd3 Nf3 22.Kf1-+) 20...Rd2 21.0-0 (21.g4 Qh3 22.Qc3 Qg2 23.Qd2 Qh1 24.Ke2 Nd2 25.Kd2 Qh2-+) 21...Nf2! 22.Rf2 Rd1 23.Qd1 Qd1 24.Rf1 Qe2 (24...Qc2!? 25.Rf2 Qc1 26.Kg2-+) 25.Rf5 (25.Rf2 Qa6 26.c3 Qa5-+) 25…Qe3 (26.Kf1 Rd8-+) 0–1. vadimus – mithrandir, Caissa.com, 2004.

4.Bg5 e5 5.a3 ed4 6.Nd4 Be4=.

4.Ng5 h6 5.Nf3 e6 6.b5 Nbd7 7.g4? (better is 7.e3!?=+) 7...Bg4-+ 8.Ne5 (8.Bg2 Bd6-+) 8...Bd6 9.Nd3 Nb6 10.f3 Bf5 11.Nf2 0-0 12.e4 de4 13.fe4? Ne4 14.Ne4 Be4 15.Nc3 Qh4 16.Ke2 Bf3 17.Kf3 Qh5 18.Ke3 Qd1 19.Nd1+/– Rad8 20.a4 e5 21.a5 ed4= 22.Kd2 Nd7 23.Bg2 b6 24.ab6 ab6 25.Ba3 Bf4= 26.Kd3 Nc5 27.Ke2 Rfe8= 28.Kf3 Bd6 29.c3? dc3-/+ 30.Nc3 Be5 31.Rac1? Rd3-+ 32.Kg4 Rc3 33.Rce1 Ra3 34.Bc6 Re7 35.Bd5 Bd6 36.Rc1 Ra4 37.Kf3 Rf4 38.Kg2 Re5 39.Ba2 Rg5 40.Kh3 Ne4 41.Rhe1 Nf2 0–1. bouffant – steve, net–chess.com, 2002.

4.h3 e6-/+ 5.a3 Bd6 6.e3 0-0 7.Bb2 Nbd7 8.c4 c6 (8...dc4 9.Bc4 Nb6 10.Be2+=) 9.c5+= Bc7 10.Bd3 Ne4 11.0-0 Qf6 12.Nc3 Nc3 (12...h6 13.Rc1+=) 13.Bc3= b6 (13...h6 14.Rb1=) 14.Bf5 (14.b5!? cb5 15.c6+= (worse is 15.Bb5 Nc5 16.Rc1 Ne4+=)) 14...Qf5= 15.Bb2 f6 (15...Nf6 16.Rc1 Rfc8 17.Nh4=) 16.g4 (better is 16.b5!?+=) 16...Qg6+= 17.Qa4 Nb8 (better is 17...b5!? 18.Qa6 Rac8-/+) 18.cb6+= Bb6 19.Rae1 (19.Rac1!?+=) 19...h5= 20.Nh4 Qe4 21.f3 Qh7 22.Ng2 hg4 23.hg4 Bc7 (23...Qh3 24.Qc2 Qg3=) 24.f4 (24.Nf4 g5 25.Nh5 a5=) 24...g5 (24...Qg6 25.b5+=) 25.Bc3 (25.Kf2 Rf7+=) 25...Kg7 (25...Qh3 26.Qd1=) 26.b5= Rh8 27.bc6?? (better is 27.Rf3=) 27...Qh2-+ 28.Kf2 gf4 29.ef4 (29.g5 Qg3 30.Ke2 Qg2 31.Kd1 Rh2-+) 29...Bf4 30.Rg1 (30.g5 Rh3 31.gf6 Kh6 32.Re3 Be3 33.Ke1 Qg2 34.Qb4 Nc6 35.Qb2 Qg3 36.Kd1-+) 30...Qg3 31.Ke2 Rh2 (31...Qc3?! 32.Nf4 Rh2 33.Rg2 Rg2 34.Ng2 Nc6 35.Kf1 Nd4 36.Re3 Qc1 37.Kf2 Qb2 38.Kg3-+) 32.Qd1 Qc3 (better is 32...Nc6 33.Kf1-+) 33.Kf1 (33.Qd3 Qc6 34.g5 Bg5-+) 33...Qc4 (better is 33...Bg3 34.c7 Nc6 35.Re3 Qc4 36.Rd3 Nd4 37.Qd2-+) 34.Qe2 Qc6 (better is 34...Qb3!? 35.Qd1 Qg3 36.c7-+) 35.Qe6 Qe6 (35...Bd6!? 36.g5 Nd7 37.gf6 Kh8 38.f7 Qc4 39.Re2-+) 36.Re6 Bg3 37.Re3 Bd6 38.Rc3 (38.Re8 Kf7 39.Rd8 Ke7-+) 38...Nd7 39.a4 (39.Rc6 Ba3 40.Rc7 Rd8-+) 39...Nb6 (better is 39...Rb8 40.Ne1 Rb1-+) 40.a5 (40.Ne3 Na4 41.Rb3-+) 40...Nc4 41.Rc4 (41.Rc2 Rb8 42.Kf2 Rb3-+) 41...dc4 (41...dc4 42.Kf2 Re8-+) 0–1. kewois (1780) – auspicious (1875), gameknot.com, 2016.

4.Nh4 e6 (4...Bd7 5.Nf3=+) 5.Nf5= ef5 6.Nc3 (better is 6.a3!?=) 6...Bb4-/+ 7.Qd3 (7.Bd2 Nc6-/+) 7...Qd7 (7...c5!? 8.Bd2 cd4 9.Qd4 Nc6 10.Qe3 Be7-/+) 8.Rb1 Nc6 9.a3 Bc3 10.Qc3 Rb8 11.e3 0-0 12.Bd3 Ne4 13.Be4 (13.Qb3 Rfe8 14.0-0 a6-/+) 13...fe4 14.0-0 b6 15.Qd2 (15.Bd2 Na5-/+) 15...Na5-+ 16.Qb4 Nc4 17.Rb3 a5 18.Qe1 b5 19.f4 a4 20.Rb1 Rb6 21.Qh4 Rh6 22.Qg3 f5 23.h4 Rh5 24.c3 c6 25.Rb4 Rf6 26.Qh3 Rg6 27.Rc4 dc4 28.g3 Rg4 29.Rf2 Qe6 30.Rd2 Qh6 ½–½. Neild,Robert – Mottershead,Richard, IECC, 2001.

5.e3 a5 6.ba5 Bd6 7.Bb5 c6 8.Be2=+.

5.e3 a5 6.b5!?=+.

5.e3 a5 6.Be2 ab4-+ 7.Bb2 ba3 8.Na3 Bb4 9.c3 Bd6 10.Nb5 Ra1 11.Nd6 Qd6 12.Qa1 0-0? (better 12...Qb6=) 13.Ba3+- Qd8 14.Bf8 Qf8 15.Qa8 Qc8 16.Ne5 h6 17.h4 Ne8 18.g4 Be4 19.f3 Bh7 20.g5 h5 21.c4 Nd6 22.c5 Nf5? (22...Nc6 23.Qc8 Nc8+-) 23.Nd7!! 1-0. RQ92 (2430) - Paul_K4 (2405), Rated Blitz game, lichess.org, 2015.

5.e3 c6 6.c4 Be7 7.Qb3 a5 8.ba5 Qa5 9.Bd2 Qc7 10.cd5 ed5 11.Bd3 Bd3 12.Qd3 0-0 13.Nc3 Nbd7 (13...Ba3? 14.Nb1+–) 14.0-0 b5 15.Rfe1 Rfd8 16.Qc2 Rdc8 (16...Ra3?? 17.Nb5 Ra1 18.Nc7 (18.Ra1?! Qb7 19.Nc3 Ra8 20.Ra8 Qa8=) 18...Re1 19.Be1+–; 16...Ba3?? 17.Nb5 Qb8 18.Na3+– (18.Ra3?! Qb5 19.Rc3 Rdc8=)) 17.Qd3 Bd6 18.e4 Ne4 (worse 18...Ra3 19.Ra3 Ba3 20.e5+=; worse 18...Ba3 19.e5 b4 20.ef6 bc3 21.Qc3+=) 19.Ne4 de4 20.Re4 Ra4 21.Ree1 Rca8 22.Qc2 (22.Bc3 g6-/+) 22...Ra3 (22...Nb6!?-/+) 23.Ra3=+ Ra3 24.d5 c5 (worse 24...cd5 25.Qc7 Bc7 26.Re8 Nf8 27.Bb4 Ra1 28.Ne1+–) 25.Ng5 Nf8 26.Re8 Ra1 (26...Bh2 27.Kf1 Ra1 28.Ke2+–) 27.Be1 g6 28.Qc3 Rd1 (worse 28...Bh2 29.Kf1 Rd1 30.Qf6+–) 29.Qb3 Qd8 (29...Bh2 30.Kf1 Ra1 31.Qc3 (31.Qb5?! Bd6=) 31...Re1 32.Re1+–) 30.Rf8 (30.Rd8?? Re1) 30...Kf8 31.Nh7 Kg7 32.Qd1 b4 33.Bd2 Kh7 34.Qf3 (34.g3!?=+) 34...Kg8-/+ 35.g3 Qb8 0–1. marekt (2100) – eekan (2025), gameknot.com, 2014.

5.e3 Bd6 6.c4 c6 7.Bb2 dc4 8.Bc4 0-0 9.Nbd2 (9.0-0 b5 10.Bd3 Bd3 11.Qd3 a5=) 9...Nbd7 10.0-0 Nb6 11.Be2 a5 12.Qb3 White intends b5 12...Ne4 13.Rfc1 h6 (13...ab4 14.ab4 Qc7 15.h3=) 14.b5 Rb8 (14...a4 15.Qd1 cb5 16.Bb5 Nd2 17.Qd2=) 15.a4 (15.bc6 bc6 16.Rc6 Nc4 17.Qc4 Rb2+=) 15...Bb4 16.bc6 Nd2 (16...Bd2? 17.c7 Qd5 A) 18.cb8Q Qb3 19.Qb7 A1) 19...Qb2?! 20.Rab1 Qa3 21.Ra1=+ (worse 21.Nd2 Nd2 22.Ra1 Qb2-/+); A2) 19...Be3=+; B) 18.Nd2?! Nd2 19.Qb6 Ra8+-; C) 18.Qb6+-) 17.Nd2 bc6 (17...Bd2? 18.c7 Qd5 19.Qb6+- (19.cb8Q Qb3 20.Qb7 Qb2-+)) 18.Qd1 (18.Bc3 Nd5 19.Bb4 Nb4+=) 18...c5= 19.Nb3 (worse 19.Rc5 Na4 (19...Bc5?! 20.dc5 Nd7 21.Ba3=) 20.Ra4 Bc5-/+) 19...c4 (19...cd4 20.Nd4 Qf6 21.Bf3=) 20.Nd2+= Bd3 21.Bd3 cd3 22.Nf3 f6 23.Bc3 Qe8 Exerts pressure on the isolated pawn (23...Bc3!? 24.Rc3 Qd7 25.Rd3 Nd5+-) 24.Bb4 (24.Qd3?! Na4 25.Bd2 Qd7+=) 24...ab4 25.a5 (25.Qd3?! Na4 26.Rc7 b3+=) 25...Nd5 26.a6 Rb6 27.Qd3 b3 28.Rcb1 b2 29.Ra5 Qa8 30.h3 (30.a7 Rc8 31.Qd2 Rb7 32.Rb2 Ra7+-) 30...Rc8 31.Qd2 Nc3 32.Rb2 Ra6 33.Ra6 Qa6 34.Ne1 Qa1 35.Kh2 Qd1 (35...Ne4 36.Qb4+-) 36.Qd1 Nd1 37.Ra2 Nc3 38.Ra6 Kf7 (38...e5 39.Nf3 ed4 40.Nd4+-) 39.Ra7+- Kg8 40.Nd3 Nd5 41.Kg3 g5 (41...Rc7 42.Ra8 Kf7 43.Kf3+-) 42.Ra6 e5 (better 42...Rc3 43.Nc5 e5+-) 43.de5 Nc3 (43...Rc3 44.Ne1 Rc1+-) 44.ef6 Rc7 (44...h5 45.Kf3+-) 45.Ne5 1-0. Pereira – Londra, internet, 2020.

5.e3 Bd6 6.Bd3 Bd3 7.Qd3 a5=+.

5.e3 Bd6 6.Be2 Nbd7 7.Nh4 Be4 8.Nc3 (8.Nd2 0-0=+) 8...c6 (8...a5 9.ba5 Ra5 10.f3=+) 9.0-0 (9.f3 Bg6=) 9...Qc7 (9...a5 10.ba5 Qc7 11.f4=+) 10.g3 Bg6 11.Ng6 hg6 12.b5 c5 13.dc5 Nc5 14.Bb2 Ncd7 (14...0-0-0 15.Qd2=+) 15.Qd2 Nb6 16.a4 (16.Rfb1 Nc4 17.Bc4 Qc4-/+) 16...Nc4 17.Bc4 Qc4 18.Qe2 (18.a5 Be5=+) 18...Rc8-/+ 19.Rfc1 (19.Qc4 Rc4 (< 19...dc4 20.Rfd1 Ke7 21.a5=) 20.h4 Bb4-/+) 19...Ng4 (19...Bb4 20.Qc4 Rc4 21.Na2-/+) 20.h4 (20.Qc4 Rc4 (< 20...dc4 21.h4=) 21.h4 Be5=+) 20...g5 (20...Ne5 21.a5-/+) 21.Qc4=+ Rc4 (< 21...dc4 22.Ne4 Bf8 23.hg5=) 22.hg5 Rh5 23.Nd1 Rg5 24.Bd4 Be5 25.c3 Bb8 26.Nb2= Rc8 27.c4 Rd8 28.b6 a6 29.cd5 Rgd5 30.Nc4 e5 31.Bb2 e4 32.Kg2 f6 33.Rh1= Kf7 34.Bd4 R5d7 35.Rh4= f5 36.Rc1 Ke6 37.Nd2 Ne5 38.g4 Nd3 39.gf5 Kf5 40.Rc4 g5 41.Re4 Rh7 42.Kg1 Bh2 43.Kf1 Bd6 44.Ke2 Nf2= 45.Rc7 Bc7 46.bc7 Rf8 (47.Re5 Kg4+=; 46...Rc8 47.Re5 Kg4 48.Kf2 Rh2 49.Ke1 Rh1 50.Ke2 Rc7+/–). Hohlstein,Walter – Baer,Werner, TT07 TSC, 2003.

5.Bf4 a6 6.e3 Nc6 7.Bd3 h6 (7...Bd3 8.Qd3 Nh5 9.Be5=) 8.Bf5+= ef5 9.0-0 a5 (9...Bd6 10.Ne5+=) 10.b5 Ne7 11.Nbd2 Ne4 12.c4 dc4 13.Nc4 Qd5 (13...Nd5 14.Qd3+=) 14.Qd3+/– c5? (better is 14...Qb5 15.Bc7 Rc8+=) 15.Nb6+– Qd8 16.Na8 Qa8 17.Rac1 Qd8 18.Rfd1 b6 (18...g5 19.Be5 f6 20.Bg3+–) 19.Qc4 Nd6 (19...Qc8 20.dc5 Nc5+–) 20.Bd6 Qd6 21.dc5 Qf6 (21...Qb8 22.c6 f6+–) 22.Qd3 Ng6 23.Qd7 1–0. wesolyPolak (1715) – ha2002ni, GameColony.com, 2002.

5.Bf4 Bd6 6.Bd6 cd6 7.Nbd2 0-0 8.e3 Nbd7 9.c4 Rc8 10.Rc1 Qe7 11.cd5 ed5 12.Be2 Ne4 13.0-0 Nc3 14.Qe1 Rc6 15.b5 Rc7 16.Nb1 Ne2 17.Qe2 Nb6 18.Rc7 Qc7 19.Qd2 Qc4 20.Nc3 Rc8 21.Rc1 Qb3 22.Ne2 Qa3 23.Rc8 Bc8 24.h3 Nc4 25.Qc2 g6 26.g4 Bd7 27.Nc3 Be6 28.Kh2 Qb4 29.Nd2 a5 30.ba6 ba6 31.Nc4 dc4 32.Kg3 d5 33.Kf3 f5 34.g5 Bd7 35.Ke2 Bc6 36.Na2 Qa3 37.Kd2 f4! 38.ef4 Qf3 39.Kc1 Qh3 40.Nc3 a5 41.Kb2 Qe6 42.Qd2 Qd6 43.Qe3 Kf8 44.Kc2 Qb4 45.Nb1 Bd7 46.Nc3 Ba4 47.Na4 (47.Kd2!? Qb2 48.Ke1 Bc6-+) 47...Qa4 48.Kb2 Qb4 49.Kc2 a4 (49...Qe7 50.Qe5 Qe5 51.fe5-+ (51.de5?? d4-+)) 50.Qe5 Qb3 51.Kc1 Qc3 52.Kb1 Qd3 53.Kc1 Qf1 (better is 53...Qf5!?-+) 54.Kb2+= Qf2 55.Ka3 Qf3 56.Ka4 Qe4 57.Qd6 ½–½. Woschkat,Karl Heinz – Markus,Roland, CiF, 1999. (=1.Nf3 Nf6 2.b4 d5 3.d4 Bf5 4.a3 e6)

5.Bf4 Bd6 6.Bd6 Qd6=.

5.a3 c6 6.c4 Nbd7 7.c5 Be7 8.Bd3 Bd3 9.Qd3 b6 10.Nbd2 (10.Qa6 Qc7=) 10...bc5 (10...a5 11.Bb2=+) 11.bc5= Rb8 (11...e5 12.Ne5 Ne5 13.de5=) 12.0-0 e5 (12...Qc7 13.e4=) 13.Qa6 (13.Ne5 Ne5 14.de5 Nd7=) 13...Qc7=+ 14.a4 (14.Ne1 e4=+) 14...e4 (14...0-0 15.Ne5 Ne5 16.de5=+) 15.Ne1 Ng4 16.g3 0-0 17.Ng2 (17.Qe2 f5=+) 17...Bf6 (17...Ngf6 18.f3-/+) 18.Ba3=+ Nh6 19.Nf4 (19.Rfb1 Nf5=+) 19...Nf5 20.Rab1 Rb1 (20...Bg5 21.Bb4=+) 21.Rb1 Rb8 22.Bb4 Qc8 (22...Bd8 23.Kg2=+) 23.Qf1 (23.Qc8!? Rc8 24.g4=) 23...Bg5 24.Bc3 (24.Qh3 Nf6=+) 24...Rb1 25.Qb1 (25.Nb1 Bf4 26.ef4 Nf8=+) 25...Qa6 26.Qb4 Bf4 27.gf4 Qe2 28.Nf1?? Nh4-+ 29.Nd2 Qg4 30.Kf1 Qd1 0–1. chessotka (1620) – Robert Edward (1840), internet, 2006.

5.a3 c6 6.c4 Be7 7.Qb3 0-0 8.Nc3 dc4 9.Bc4 b5 10.Be2 a5 11.ba5 Qa5 12.Bb2 Nbd7 13.0-0 Ne4 14.Rfc1 Rfd8 15.Qc2 Nd6 16.e4 Bg6 17.Rd1 Nc4 18.Bc4+= bc4 19.h3 Bh5 20.g4 Bg6 21.Qe2 Rab8 22.Ra2 c5 23.d5 Bf6 24.de6 fe6 25.Rc1 Ne5 26.Ne5 Be5 27.Qc4 Bf7 28.Ba1 Bf4=+ 29.Rf1 Rd4 30.Qe2 Bg6 31.Rb2 Rbd8 32.Rb7 Qa3 33.Qb5 Be8 34.Qb6=+ R8d6 35.Qc7+= Rd7 36.Qc8 Kf8 37.Ne2 Rb7 38.Bd4 Rc7 39.Bg7! Kg7 40.Qe8 Qf3 41.Nf4 Qf4 42.Qe6 c4 43.e5 h6 44.Qd6 Rf7 45.Qc5 Qe4 46.Rc1 Rf4 47.Qc7 Rf7 48.Qc4 Qe5 49.Qc3 Qc3 50.Rc3 Rf6 51.Kg2 Kg6 52.Kg3 h5 53.f3 Kh6 (53...Rb6 54.f4+–) 1–0. Baer,Werner – Woelfelschneider,Peter, ETC, 2003.

5.a3 c6 6.Nbd2 a5 7.b5 Bd6 (7...Nbd7 8.Be2+=) 8.c4 cb5 (8...Nbd7 9.c5 Be7 10.Be2=) 9.c5= Bc7 10.Bb5 Nc6 11.0-0 0-0 12.Bb2 Qe7 13.Qe2 Bg4 14.h3 Bh5 15.Qd3 Bf3 (15...Bg6 16.Qb3=) 16.Nf3+= Ne4 17.Qc2 Qf6 (17...f5!?=) 18.Bd3+/– Qg6 19.Ne5 Ne5 (19...Be5!? 20.de5 Qh5+/–) 20.de5 Qg5 21.Bd4 (21.Be4 de4 22.Qe4+/–) 21...Qh5? (better is 21...Qh4!?+/–) 22.Be4+– de4 23.Qe4 Rab8 (23...Rfb8 24.Rab1 Ra7 25.c6+–) 24.Rab1 1–0. mikleol (2220) – phildo (1880), gameknot.com, 2014.

5.a3 c6 6.Nbd2 Nbd7 7.c4 Be7 8.Bb2 0-0 9.Be2 h6 10.0-0 Rc8 11.Qb3 Qc7 12.h3 Qb8 13.Rac1 a6 14.c5 Rfe8 15.Ne5 Ne5 16.de5 Nd7 17.f4 Bh7 18.Bd3 (18.Bd4!?+=) 18...Bd3= 19.Qd3 f5 (19...b6!? 20.cb6 Qb6=) 20.Nf3+= Nf8 (20...b6 21.Nd4 Nc5 22.bc5 bc5 23.Ne6 Qb2+–) 21.g4+/– g6 22.Rc2 Rc7 (22...b6 23.Nd4 (23.Qa6?! bc5 24.bc5 Nd7+=) 23...bc5 24.bc5 Bc5 25.Rc5 (25.Qa6?! Qb6 26.Qb6 Bb6+=) 25...Qb2 26.Rb1+–) 23.Rg2 fg4 24.Rg4 (24.hg4 b6 25.cb6 Qb6+–) 24...Bd8 25.Kh1 Rg7 26.Rfg1 Qc7 (26...b6 27.Bd4 a5 28.Qc2+/–) 27.Nd4 Qf7 (27...g5!?+/–) 28.f5+– g5 29.e4 de4 30.Qe4 Kh8 31.f6 Rg6 32.h4 Nh7 33.Bc1 h5 34.R4g2 g4 35.Ne2 Bc7 36.Ng3 Reg8? 37.Bh6?? Rd8?? 38.Bg7+– Rg7 39.fg7 Kg7 40.Rf1?? Qe8 41.Rgf2 Rd7 42.Kg2 Bd8 43.Rh1 Bc7 44.Rhf1 Bd8 45.Rh1 Bc7 46.Rhf1 Bd8= 47.Rh1 Bc7 ½–½. Guillaumat,Jean_Pierre (1835) – Violeau,Jean_Luc (1885), Pau FRA, Senior Ch, 2012. (=1.d4 d5 2.Nf3 Nf6 3.b4 Bf5 4.e3 e6)

5.a3 c6 6.Bd3 Nbd7 7.c4 Bd3 8.Qd3 Ne4 9.Nbd2 Ndf6 10.0-0 g6 11.c5 Bg7= 12.Ne1 Qc7 13.Ndf3 0-0 14.Ne5 Nh5 15.N1f3 f6 16.Ng6 hg6 17.g4 Kf7 18.gh5 g5 19.Ne1 Rh8 20.f4?? Rh5-/+ 21.Ra2 Rah8 22.Rg2 g4 23.Qe2 f5 24.Bd2 Qe7 25.Nd3? Rh3 26.Nf2-/+ R3h5 27.Ne4 de4=+ 28.Be1 Bf6 29.Bg3 Bh4 30.Rff2 Bg3=+ 31.Rg3 Qh4 32.Rfg2= Qf6 33.Qf2 R8h7 34.Kh1 Qh8 35.Kg1 Ke7 36.Qe2 Qd8 37.Qc4 Kd7 38.Kh1 Qe8 39.Kg1 Kc7 40.a4 R7h6 41.b5 Qb8 42.Kh1 Qh8=+ 43.Qe2 b6 44.cb6= ab6 45.Qc2 c5 46.Kg1 Kb7 47.Qd2 Rh7 48.Qb2 Rd7 49.Rd2=+ cd4 50.ed4 Qh6 51.Rf2 Rc7 52.Rc3=+ Rd7 53.Rg3 Qh8 54.Rd2 Qb8 55.Rf2 Qd6 56.Qb3 Rh6 57.Qc4? Rc7-+ 58.Qb3 Rc1 59.Kg2 Qd4 60.Qe3?? Qc4 61.Qa3 Qc5 62.Qb3?? Rc4 63.Qd3?? ed3 (63...ed3 64.h4 Rc2 65.Rc2 Qc2 66.Kf1 d2 67.Rd3 Qd3 68.Kf2 Qf3 69.Kg1 d1Q 70.Kh2 Rh4#; 63...Rh2 64.Kh2 Qf2 65.Rg2 Qh4 66.Kg1 ed3 67.Rg4 Rc1 68.Kg2 Rc2 69.Kf3 Qf2#) 0–1. Becker,Jon (1970) – Schoknecht,Sabine (1730), Open Kiel GER, 2006.

5.a3 Nbd7 6.Bb5 c6 7.Bd3 Bd3 8.Qd3 a5=+.

5.a3 Nbd7 6.c4 a5 7.ba5 Ra5 8.Bd2 Ra7 9.Nc3 dc4 (9...Ba3? 10.Nb5 Ra8 11.Ra3 Ra3 12.Na3+–) 10.Bc4 Nb6 (10...Ba3?? 11.Nb5 Ra8 12.Na3+–) 11.Be2 Ne4 (11...Ba3?? 12.Qb3+–) 12.Ne4 Be4 13.0-0 Bd6 14.Bb4 0-0 15.Nd2 Bc6 16.Qc2 Qd7 17.Bf3 Bf3 18.Nf3. marekt – scjames, ChessWorld.net, 2012.

5.a3 Nbd7 6.c4 a5 7.ba5 dc4 8.Bc4 c5 (8...Ra5 9.Bd3+=) 9.Bd2= Qc7 10.Be2 Ne4 11.0-0 Be7 12.Nc3 Nd2 13.Nd2 0-0 14.Nc4 White intends d5 14...Rfd8 15.Qb3 cd4 16.ed4 Nb8 17.d5 Nd7 18.Nb5 Qf4 19.g3 Qe4 20.Nc3 Qc2 21.Qc2 Bc2 22.d6 Bf8 23.Rfc1 Bb3 24.Nb5 g6 25.a4 Bc4 26.Rc4 Ra5 27.Rd1 b6 28.Bd3 Nc5 Exerts pressure on the isolated pawn 29.Bc2 Raa8 30.Kg2 f5 31.h3 Rd7 32.g4 Kf7 33.f3 Ra5 34.f4 Ra8 35.Kf3 Kf6 36.Kf2 Kf7 37.Ke3 h6 38.Ke2 Kf6 39.Kf3 Kf7 40.Rd2 Kf6 41.h4 White prepares the advance g5 41...h5 42.g5 Kf7 43.Rd1 Rdd8 44.Kg2 Rd7 45.Kf2 Rc8 46.Kf3 Ra8 ½–½. pierre – shamskhan, internet, 2015.

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

5.a3 Nbd7 6.c4 Bd6 7.cd5 ed5 8.Bd3 Bd3 9.Qd3=.

5.a3 Be7 6.c4 0-0 7.Nbd2 c6 8.Bb2 a5 9.b5 Nbd7 10.Be2 cb5 11.cb5 Rc8 12.Rc1 Rc1 13.Qc1 Nb6 14.0-0 Na4 15.Bd1 Nb2 16.Qb2 Qd6 17.a4 Rc8 18.Ne5 h6 19.f3 Bh7 20.Bb3 Qa3 21.Qa3 Ba3 22.Ra1 Bb4 23.Nf1 Ne8 24.Kf2 Nd6 25.Bd1 f6 26.Nd7 Nc4 27.Be2 Nb2 28.Kg1 Kf7 29.Ng3 Rc2 (30.Nb6 h5-+) 0–1. dominick1952 (1985) – vlogvine (2040), internet, 2006.

5.a3 Be7 6.c4 0-0 7.Nbd2 c6 8.Nb3 Nbd7 9.Bb2 Bd6 10.Be2 dc4 11.Bc4 Nb6 12.Na5 Nc4 13.Nc4 Bc7 14.0-0 Bg4 (14...Qd5 15.Nfe5 b5 16.Na5 Ba5 17.ba5=) 15.Qe2 Ne4 16.h3 Bf3 17.Qf3 Qd5 18.Rac1 b5 19.Ne5 Be5 20.de5 Nd2 21.Qd5 cd5 22.Rfd1 Nc4 23.Bd4 a5 24.Ra1 Rfc8 25.Re1 Nd2 26.Ra2 Nb3 27.ba5 Nd4 28.ed4 Ra5 29.Re3 h5 30.Rd2 Rc1 31.Kh2 Ra1 32.Rdd3 Ra4 33.Rf3 ½–½. Jimenez,Jean Claude – Chorfi,Khalid (2460), FRA EE6.F.01 corr, 1996. (=1.d4 Nf6 2.b4 d5 3.Nf3 Bf5 4.e3 e6)

5.c3 Bd6 6.a4 c6 7.Be2 h6 8.Qb3 Nbd7 9.Ba3 0-0 10.b5 c5 11.Nbd2 c4 12.Qb2 Ba3 13.Ra3 a6 14.a5 ab5 15.Qb5 Qc7 16.0-0 Ra6 17.Ne5 Ne5 18.de5 Nd7 19.e4 de4 20.Nc4 Rc6 21.Rd1 Ne5 22.Qe5 Rc4 23.Qc7 Rc7 24.g4 Bg6 25.Rd6 Ra8 26.Rb6 Kf8 27.c4 Ra7 28.Kf1 Ke7 29.Ke1 f6 30.Kd2 Be8 31.Kc3 Bc6 32.c5 Ra8 33.Bb5 Bd5 34.Kb4 h5 35.gh5 Rh8 36.Rg3 Kf7 37.Be2 f5 38.f4 (better is 38.Rg6=) 38...ef3!-/+ 39.Bf3 Bf3 40.Rf3 Rh5 41.c6 (41.h3!?-/+) 41...bc6-+ 42.a6 Rh2 43.Rb7 Rb7?? (better is 43...c5 44.Ka5 Rb7 45.ab7 Rb2-+) 44.ab7= Rh8 45.Kc5 Kf6 46.Kc6 g5 47.Rd3 Rb8= 48.Kc7 Rb7 49.Kb7 Ke5 50.Kc6 f4 51.Kc5 g4-+ 52.Rd8 g3 53.Rg8= Ke4 54.Kc4?? e5 55.Rg5+= Ke3 56.Re5 Kf2 57.Kd3 f3 58.Rg5 g2 59.Ke4 ½–½. Kytoniemi,Jyrki (2285) – Agopov,Mikael (2395), Jyvaskyla We JyS op FIN, 1999. (=1.Nf3 Nf6 2.d4 d5 3.b4 Bf5 4.e3 e6)

5.Bd2 Bd6 6.a3 0-0 7.Nc3 c6 8.Be2 Nbd7 9.Nh4 Qc7 10.Nf5 ef5 11.g3 g6 12.0-0 h5 13.b5 h4 14.Qe1 Kg7 15.bc6 bc6 16.a4 Rh8=+ 17.Rb1 Nh5 18.Bh5 Rh5-/+ 19.Ne2 hg3 20.fg3 Rah8 21.Rf2 Nf6-/+ 22.Nf4 R5h6 23.Ba5 Qe7 24.Bb4 Ng4 25.Bd6 Qd6 26.h4 Nf2 27.Kf2 g5 28.Ng2 gh4 29.Nh4 Rh4 30.gh4-/+ f4 31.Qg1= Kh7 32.Rb7 fe3 33.Ke2 Qf6 (34.Qe3 Kg6+=). themonkey – keyrock, GameColony.com, 2002.

5.Bd2 Nbd7 6.Be2 Bd6 7.a3 0-0 8.Nc3 c6 9.Nh4 Re8 10.Nf5 ef5 11.0-0 Ne4 12.g3 Qg5 13.h4 Qg6 14.h5 Qg5 15.Ne4 fe4 16.c4 Nf6 17.cd5 cd5 18.Re1 Bg3 19.fg3 Qg3 20.Kf1 Re6 21.Qb3 Nh5 22.Bh5 Qh3 23.Kg1 Qh5 24.Rf1 Qg4 25.Kf2 Rf6 26.Ke1 Qg3 27.Ke2 Qg2 28.Kd1 Rf1 29.Be1 Rc8 30.Qa2 Qg1 31.Kd2 Rf3 32.Qb1 Qe3 33.Kd1 Rf1 0–1. marus1 – Hrct, internet, 2001.

5.h3 Bb4-/+ 6.Bd2 Bd6 7.Nh4 Be4 8.a3 0-0 9.Be2 c5 10.dc5 Bc5 11.0-0 Nc6 12.Nc3 Qe7 13.f3 d4 14.Na4 de3 15.Nc5 Qc5 16.Bb4 Nb4 17.ab4 Qg5 18.fe4 Qh4 19.Qe1 Qe4 20.Bf3 Qd4 21.Bb7 Rad8 22.c3 Qb6 23.Bf3 Rd2 24.Kh1 Rc8 25.Ra3 Nd5 26.Qa1 e2 27.Re1 Ne3 28.Ra2 Ra2 29.Qa2 Nf1 30.Be2 Ng3 31.Kh2 Qf2 32.Qd2 Ne4 33.Qd1 Qf4 34.Kg1 Nc3 35.Qc2 Ne2 36.Qe2 Qb4 37.Kh2 a5 38.Qe5 Qb8 39.Qb8 Rb8 40.Ra1 Ra8 41.Kg3 a4 42.Ra3 e5 43.Kg4 g6 44.Kf3 f5 45.g3 Kf7 46.h4 h6 47.Ke2 Ke6 48.Ke3 Kd5 49.Kf3 Kc5 50.g4 fg4 51.Kg4 Kb4 52.Ra1 Kb3 53.Rb1 Kc2 54.Rg1 a3 55.Rg2 Kd3 56.Ra2 e4 (57.Kf4 e3-+) 0–1. Munkwitz,Wolfgang (1615) – Bonetti,Shane (2110), TT–15 ETC, 2005.

6.Bb5 c6 7.Bd3=+.

6.c4 0-0=.

6.c4 a5 7.b5+=.

6.c4 dc4 7.Bc4 c6 (7...0-0 8.Nc3=) 8.0-0 (8.Nc3 Nbd7=) 8...Nbd7 (8...a5 9.ba5 Qa5 10.Nh4=) 9.Bb2 (9.Nc3 0-0=) 9...Qc7 (9...Nb6 10.Bd3=) 10.Nbd2 (10.Qe2 Nb6=) 10...0-0 (10...Nb6 11.Bb3=) 11.Re1 (11.Qe2 Nb6=) 11...Ne4 (11...Nb6 12.Bb3 Ne4 13.Ne4 Be4 14.h4=) 12.Ne4 Be4 13.h3 (13.g3 a5 14.b5 Nf6=) 13...Nb6 14.Bf1 (14.Bd3 f5=) 14...Bf3 (14...a5 15.b5+=) 15.Qf3= e5 (15...a5 16.b5 Na4 17.Bc1+=) 16.Rac1 (16.Rad1 ed4 17.Bd4 Bh2 18.Kh1 Be5+=) 16...Qe7 (16...Rfe8 17.e4+=) 17.de5+/– Be5 18.Be5 Qe5 19.Qe2 (19.b5!?+/–) 19...Rfd8 (19...Rad8 20.Red1=) 20.Red1 Rd5 (20...g6 21.g3=) 21.Rd5+= Qd5 22.Rd1 Qb3 (22...Qe5 23.Qc2+=) 23.Qd3 (23.Rd3 Qe6+=) 23...Qd3= 24.Bd3 Re8 (24...Kf8 25.Bc2= (worse is 25.Bh7 g6-/+)) 25.Kf1 (25.Bc2 g6+=) 25...h6 (25...g6 26.Bc2+=) 26.Bc2 Kf8 27.Rd4 (27.Ke2 Ke7+=) 27...Re5 28.Bb3 (28.Ke2 Ke7+=) 28...Re7 (28...Ke7 29.Ke2=) 29.Ke2 (29.e4 Rd7 30.Rd7 Nd7+=) 29...Rd7 (29...Rc7 30.g3+=) 30.Kd3 (30.Rd3 Ke7+=) 30...Rd4 (30...Rc7 31.Kc3+=) 31.Kd4 Ke7 (31...Nd7 32.e4+=) 32.f4 f6 (32...Nd7 33.e4+=) 33.h4 (33.e4 Nd7+=) 33...Kd6 (33...Na8 34.Bc4+=) 34.Ke4 (34.e4 Nd7+=) 34...Nd7 (34...Nd5 35.g4 g6 36.Kf3=) 35.Kf5+= Nf8 36.e4 (36.h5 b6+=) 36...Ke7 37.h5 Nd7 (37...b5 38.g4+/–) 38.Kg6 Kf8 39.Be6 Nb8 (39...Nb6 40.g3+/–) 40.Kf5 (40.g3 b6+/–) 40...b6 (40...Ke7!?+/–) 41.e5 fe5 42.Ke5 Ke7 43.Bc8 (43.g4 Na6+/–) 43...Kd8 44.Bf5 Ke7 45.g4 Na6 46.Bd3 (46.g5 Nc7+/–) 46...Nc7 47.Bc4 Ne8 48.g5 Nd6 49.Bd3 Nf7 (49...a5 50.ba5 ba5 51.a4+/–) 50.Kf5+= Nd6? (better is 50...c5!?+=) 51.Kg6+– hg5 52.fg5 Kf8 53.Bc2 (53.Bf5 Kg8 54.Be6 Kh8 55.h6 gh6 56.Kh6+– (56.gh6?! c5 57.bc5 bc5=)) 53...Kg8 (53...c5 54.bc5 bc5 55.Bf5+=) 54.Bb3 Kh8 55.h6 (55.Be6 c5+=) 55...gh6 56.Kh6 c5 57.bc5 bc5 58.Kg6 (58.Be6 Ne8+=) 58...c4 59.Bc2 Kg8 60.Kf6 Nb5 61.g6 Nd4?? (better is 61...Nc3+=) 62.Be4 (62.Be4 Ne6 63.Bd5 Kf8 64.Be6 Ke8 65.g7 Kd8 66.g8Q Kc7 67.Ke7 Kb6 68.Qb8 Kc6 69.Qd6 Kb5 70.Bd7 Ka5 71.Qc5 Ka6 72.Qb5) 1–0. Baret,Antoine (2060) – Kovac,Alojz (1980), Druga Clanska Liga – Zahod, 2010. (=1.d4 Nf6 2.b4 d5 3.Nf3 Bf5 4.e3 e6)

6.c4 c6 7.Bb2 Nbd7 8.Nbd2 0-0 9.Be2 Ne4 10.Rc1 Qb8 11.Nf1 Nd2?? (better is 11...a5 12.b5 dc4 13.Bc4 Nb6=) 12.Qd2 Bh2 (12...dc4 13.Bc4 Be4+–) 13.N1h2 1–0. Jimenez,Jean Claude – Chopin,Philippe, FRA Cup7/4T corr, 1997. (=1.d4 d5 2.Nf3 Nf6 3.b4 Bf5 4.e3 e6)

6.Nbd2 0-0 7.c4 Nbd7 8.c5 Be7 9.Be2 c6 (9...a5 10.b5=) 10.0-0 Ne4 11.Bb2 Ndf6 12.Ne5 Rc8 (12...Nd2 13.Qd2 Ne4 14.Qd1=) 13.Ne4 Be4 14.f3 Bf5 15.g4 Bg6 16.h4 h5 17.Ng6 fg6 18.g5 Nd7 19.f4 Qc7 (19...Qe8!?+/-) 20.Bd3+- Kf7 (20...Rf5 21.Qf3+-) 21.Qd2 (21.Qc2!? Ke8+-) 21...Rfe8+/- 22.Rad1 Nf8 23.Rfe1 b6 24.e4 de4 (24...Rcd8 25.Rc1+/-) 25.Be4 Rcd8 (25...Kg8 26.Qe3+/-) 26.Qc3+- Qf4?? (better 26...Kg8+-) 27.Rf1 (27.Rf1 Qf1 28.Rf1 Bf6 29.Bc6+-; 27.Bc6?! Qh4 28.Qf3 Kg8+-) 1-0. OnlyPolishOpening (2095) - Huepfmann (2125), lichess.org, 2020.

6.Ne5 0-0 7.Bd3 Ne4 8.f3?? (better is 8.0-0-/+) 8...Qh4-+ 9.g3 Ng3! 10.Kd2 (10.hg3 Qg3 Double attack (10...Qh1 Pinning; 10...Qh1 Deflection)) 10...Nh1 11.Qh1 Qf2 12.Be2 c5! 13.c3 (13.bc5 Be5 Combination; 13.dc5 Be5 Deflection) 13...cd4 14.ed4 (14.Nd3 de3 15.Kd1 Bd3 16.Bd3 Bh2-+) 14...Be5 15.de5 Nd7 (better is 15...d4 16.Kd1 dc3 17.Nc3 Qd4 18.Bd2-+) 16.Ra2 (16.Qf1 Qh2 17.f4-+) 16...Ne5 17.Rb2 (17.Kd1 Bb1 18.Rd2 Rac8-+) 17...Nd3 (better is 17...Nc4 18.Kd1 Nb2 19.Bb2 Bb1 20.h3-+) 18.Rb3 Nf4 (better is 18...Rac8!? 19.Qf1 Qh2 20.f4-+) 19.Qf1 Qh2 20.Ke1 Rac8 21.Bf4 Qf4 22.Nd2 d4 (22...Bc2 23.Rb2 Rc3 24.Qg2-+) 23.c4 Rfd8 (23...Bc2 24.Qf2-+) 24.c5 (24.Bd3 e5-+) 24...b6 25.Kd1 (25.Ba6 Rc7 26.Bd3 bc5 27.Bf5 Qf5-+) 25...bc5 (25...d3 26.Rd3 Rd3 27.Bd3-+) 26.Bd3 (26.Bc4 cb4 27.Rb4 a5-+) 26...cb4 27.ab4 (27.Rb4 Rc3 28.Bf5 Qf5 29.Rb2-+) 27...Rc3 28.Bf5 Qf5 29.Rb2 Rdc8 30.Ke2 Qd3 (30...Qe5 31.Kf2 Rc2 32.Rc2 Rc2 33.Qe1 Qh2 34.Kf1 Rd2 35.Qd2 Qd2 36.b5 d3 37.Kg1 Qe2 38.f4 d2 39.b6 d1Q) 31.Kf2 Qf1 (better is 31...Qe3 32.Kg3 Rc1 33.Qg2-+) 32.Nf1 (32.Kf1 Rc2 33.Rc2 Rc2-+) 32...Rc2 33.Rc2 Rc2 34.Kg3 Rb2 35.Kf4 Rb4 36.Nd2 (36.Ng3 a5 37.Ke4-+) 36...a5 37.Ke4 f6 (better is 37...a4 38.Kd3 a3 39.Kc2-+) 38.f4 a4 39.Nf3 a3 40.Nd4 a2 41.Ke3 a1Q 42.Ne6 Qc3 43.Kf2 Rb2 44.Kg1 (44.Kf1 Qc1) 44...Qc1 (44...Qe1) 0–1. samantho (1860) – bmurtinho (1990), net–chess.com, 2014.

4.Bb2 e6 5.a3 Be7 6.Nbd2 0-0 7.c4 Bf3 8.ef3 dc4 9.Bc4 Nbd7 10.0-0 Nb6 11.Bb3 c6 12.Re1 a5 13.ba5 Ra5 14.Ne4 Nbd5 15.Qd2 Qa8 16.Qc1 Qa7 17.Nd2 Nb6 18.Bc2 Na4 19.Nb3 Rb5 20.Re5 Rd5 21.Be4 Nb2 22.Qb2 (22.Bd5? Nd3 23.Qe3 Ne5 24.Be6 Ng6-+) 22...Re5 23.de5 Ne4 24.fe4 Ra8 (24...Qa4!?-/+) 25.a4= Rd8 26.Qc3? (better is 26.Qc2!?+=) 26...Qa4-+ 27.g3 (27.f3!? Qb5-+) 27...Qe4 28.Nc5 Bc5 29.Qc5 h6 30.Qe7 Qd4 31.Re1 b5 32.Qb7 Qd7 33.Qb6 Rc8 34.Rc1 c5! 35.Rc5 Rc5 36.Qc5 Qd1 37.Kg2 Qd5 38.Qd5 ed5 39.Kf3 Kf8 40.Ke3 Ke7 41.Kd4 b4 42.f4 Ke6 43.g4 g6 44.h4 (44.h3 b3 45.Kc3 d4 46.Kb3-+) 44...h5 45.f5 gf5 46.gh5 f6 47.ef6 Kf6 48.Ke3 b3 49.Kd3 d4! 50.Kd2 (50.Kd4 b2 Passed pawn) 50...f4 (better is 50...Kg7!? 51.Kd3-+) 51.Kd3 f3 52.h6 Kg6 53.h5 Kh6 54.Kd4 f2 55.Kc3 f1Q 56.Kb3 0–1. Bezukladov,OD – Lundin,Alexandr (2285), Alekhine op Moscow, 1996. (=1.d4 d5 2.b4 Nf6 3.Nf3 Bg4)

4.Nbd2 Bf3 5.ef3 e6 6.c3 a5 7.ba5 Ra5 8.Qb3 b6 9.Bb5 Nbd7 10.0-0 Be7 11.a4 0-0 12.Bb2 Ne8 13.c4 dc4 14.Nc4 Ra7 15.Ne5 Ne5 16.de5 Bc5 17.Rfd1 Qg5 18.Qc4 g6 19.a5 Ng7 20.Rd7 Nf5 21.a6 Nh4 22.Qg4 Qg4 23.fg4 g5 24.g3 Ng6 25.Kg2 Rc8 26.Bc6 Nf8 27.Rd2 h6 28.Kf3 Rb8 29.Ke2 Rc8 30.Rd3 Rb8 31.Rdd1 Rc8 32.h4 gh4 33.gh4 Rb8 34.h5 Kg7 35.f4 Nh7 36.Kf3 Nf8 37.g5 Nh7 38.gh6 Kh6 39.Rd7 Kg7 40.Be4 Nf8 41.h6 Kh8? 42.Rf7 Kg8 43.Rg7 Kh8 44.f5 Nd7 45.f6 Ne5 46.Be5 c6 47.Ra7 Rf8 48.f7# 1–0. usingprogram (1990) – chesskillerbg (1635), kurnik, 2011.

4.e3 e6 5.a3 Bd6=.

4.e3 e6 5.c3 Bd6=+ 6.Be2 0-0 7.0-0 (7.Nbd2 c6=+) 7...Ne4 (7...Nbd7 8.Nbd2=+) 8.Ne5 (8.Qb3 Nc6=+) 8...Be2 9.Qe2 c6 10.f3 Nf6 11.Ba3 (11.e4 Qc7=+) 11...Nbd7 (11...b5 12.Nd2=+) 12.f4 (12.Nd7 Nd7 13.e4 Qh4=+) 12...Ne4 (12...Qe7 13.Nd2=+) 13.c4 a6 (13...Qe7 14.Nd7 Qd7 15.c5=+) 14.c5 (14.Nd7 Qd7 15.c5 Be7=+) 14...Be5 15.fe5 Qg5 16.Nd2 Nd2 17.Qd2 f6 18.ef6 Nf6 19.Rae1 (19.Bb2 Rf7=+) 19...Rf7 (19...Ne4 20.Qd3=+) 20.Rf4 Ne4 21.Qc1 Raf8 22.Ref1 Rf5 23.Bb2 R8f6 24.a4 h5 25.R1f3= h4 26.Rf5 Rf5-/+ 27.Rf5 ef5 28.Qe1 h3 29.g3? Qg4-+ 30.Bc1 Ng5 31.Qf1 Qe4 32.Qf4 Qg2 0–1. Krumm,Uwe – mrkt, myChess.de, 2008.

4.e3 e6 5.Nc3 Bb4 6.Bb2? (6.Bd2 c5-/+) 6...c5 (better is 6...Ne4 7.Qd3 c5 8.Qb5 Nd7 9.dc5-+) 7.Be2?? (better is 7.Bb5 Nc6 8.a3 Bc3 9.Bc3-+) 7...Ne4 8.h3 (8.dc5 Qa5 (worse is 8...Bc3 9.Bc3 Bf3 10.Bf3 Nc3 11.Qd4-+; 8...Nc3?! 9.Qd4 Ne2 10.Qb4 Bf3 11.gf3-/+) 9.Qd4 Bc3 (9...Nc3?! 10.a3 Ne2 11.Qb4 Qb4 12.ab4-/+) 10.Bc3 Qc3 (10...Nc3?! 11.Qg4 Ne4 12.Kf1-+) 11.Qc3 Nc3-+) 8...Bf3 (better is 8...Nc3!? 9.Bc3 Bc3 10.Kf1 Bf3 11.gf3 Ba1 12.Qa1-+) 9.Bf3 Bc3 (9...Nc3!? 10.Qd3 Na4 11.c3 Nb2 12.Qb5 Qd7 13.Qd7 Nd7 14.cb4 Nd3 15.Ke2 Nb4 16.dc5 Nc5 17.Rhc1-+) 10.Bc3 Nc3 11.Qd2 Ne4 (11...Qa5!? 12.0-0 Nc6 13.Rfe1-+) 12.Be4 de4 13.c4 Nc6 14.Rd1 Nb4 (better is 14...Qf6 15.Qb2 0-0-0 16.Rb1-+) 15.a3 (15.0-0-+) 15...Nd3 16.Kf1 (16.Ke2 cd4 17.f3 f5-+) 16...cd4 17.Qe2 0-0 18.f3 f5 19.f4 (19.g3 Qc7 20.ed4 Qg3-+) 19...Rc8 20.g3 Rc4 21.Kg2 Qd5 22.h4 (22.Rd2 Rc3 23.Kh2 Qb3-+) 22...Rfc8 23.g4 (23.Kh2 Nc1 24.Qf2 Rc2-+) 23...de3 (better is 23...Rc2 24.Rhe1 Ne1 25.Re1-+) 24.Qe3 Rc2 25.Rd2 Rd2 26.Qd2 e3 (26...e3 27.Kh3 Qh1 28.Kg3 ed2 29.gf5 d1Q 30.fe6 Qdf3) 0–1. calchess10 – Bossieman, ChessWorld.net, 2014. (=1.Nf3 d5 2.b4 Nf6 3.d4 Bg4)

4.Ne5 Bf5 5.e3 e6 6.a3 Bd6 7.Bb2 a5 8.b5 Nbd7 9.Nd2 c5 (9...0-0 10.c4+=) 10.c4 (10.bc6 bc6 11.g4 Be5 12.gf5 Bd6 13.fe6 fe6=) 10...0-0 (10...cd4 11.ed4 0-0 12.Rc1+=) 11.Be2 (11.Nd7 Nd7 12.cd5 ed5=) 11...h6 (11...cd4 12.ed4 Rc8 13.g4+=) 12.0-0 a4 13.f4 (13.Nd7 Nd7 14.dc5 Nc5 15.cd5 ed5=) 13...Nb6 14.Rc1 Qe7 15.Qe1 Ne4 (15...cd4 16.Bd4 Nc4 A) worse is 17.Bc4 Ba3 (17...dc4?! 18.Ndc4 Ne4 19.Nd6 Qd6 20.Nc4+=) 18.Be2 Bc1 19.Qc1 Rfc8-/+; B) 17.Ndc4 dc4 18.Nc4=) 16.Ne4= Be4 17.Rc3 (17.cd5 Nd5 (17...Bd5? 18.dc5 Bc5 19.Qg3+–) 18.Nc4 cd4=) 17...f6-/+ 18.Ng4 Nc4 19.Bc4 dc4 20.Qg3 Kh8 21.Rc4? (21.Nf2 Bd5 22.dc5 Bc5 23.e4 Be4 24.Rc4-+) 21...Bd3-+ 22.Rc3 (22.Rfc1 Bc4 23.Rc4 cd4 24.ed4 Qd7-+) 22...Bf1 23.Kf1 Rac8 (23...Qd7 24.Qf3 cd4 25.Rd3-+) 24.Qe1 cd4 25.Rc8 (25.ed4 Qd7 26.Rc8 Rc8-+) 25...Rc8 26.Bd4 e5 27.fe5 fe5 28.Bc3 (28.Ba1 Rc2 29.Nf2 Ba3-+) 28...Qe6 (worse is 28...Ba3 29.Kg1-+) 29.h3 Qc4 (29...Qc4 30.Kf2 Qc3 31.Qc3 Rc3-+) 0–1. Guillamat,Jean Pierre – Bersoult,Francois (2175), Maromme op, 1994. (=1.d4 d5 2.Nf3 Nf6 3.b4 Bg4)

4.Bg5 Ne4 5.Bd2 e6 6.h3 Bf3 7.ef3 Nd2 8.Qd2 Nd7 9.b5 Rc8 10.Be2 c5 11.bc6 Rc6 12.Bb5 Rc8 13.0-0 Bd6 14.Qd3 a6 15.Bd7 Qd7 16.c3 Rc6 17.Nd2 Qc7 18.Rac1 0-0 19.Rc2 Rc8 20.Nb1 Bb4 21.Rfc1 b5 22.f4 Ba5 23.f5 e5 24.de5 Qe5 25.Re2 Qd6 26.Rce1 h6 27.Re8 Kh7 28.R8e7 R6c7 29.f6 g6 30.Qd4 Re7 31.fe7 Re8 32.Kf1 Re7 33.Re7 Qe7 34.Qd5 Qc7 35.Ke2 h5 36.Kd3 Kh6 37.f3 f5 38.a3 Qg3 39.Nd2 Bc7 40.Qd4 Be5 41.Qe3 Bf4 42.Qd4 Be5 43.Qe3 Bf4 44.Qd4 Kh7 45.Qd7 Kg8 46.Qe8 Kg7 47.Qe7 Kg8 48.Qe8 Kg7 49.Qe7 Kg8 50.Qe8 ½–½. Bestia – Quark, computer chess game, 2001.

4.Bg5 Ne4 5.Bh4 f6 6.e3 e5 7.de5 g5 8.ef6 gh4 9.f7 Kf7 10.Ne5 Ke6 11.Qg4 Ke5 12.Bd3 Bb4 13.c3 Be7 14.Qf4 Ke6 15.Be4 de4 16.Qe4 Kd7 17.Qb7 Nc6 18.Qb5 Qg8 19.0-0 Qg6 20.f4 Qe4 21.Qe2 Bc5 22.Qg4 Qe6 23.Rd1 Bd6 24.Qe6 Ke6 25.Nd2 Bc5 26.Re1 Ne7 27.Nb3 Bb6 28.c4 c5 29.a4 a5 30.e4 Rhg8 31.Re3 Rg4 32.Rf1 Rag8 33.Rf2 Nc6 34.Nc1 Rd8 35.Nd3 Nb4 36.f5 Kf6 37.e5 Kg5 38.Nb2 Nd5 39.Rb3 Nb4 40.e6 Re4 41.Rbf3 h5 42.Rf1 Rd2 43.Nd1 Kf6 44.Nf2 Re5 45.Nd1 Rd4 46.Ne3 Rde4 47.Re1 Rd4 48.Rb1 Bc7 49.Rb3 Bd6 50.Rb2 Rd3 51.Re2 Nc6 52.Nd5 Rdd5! 53.cd5 Rd5 54.e7 Ne7 55.Re6 Kf7 56.Rh6 Rd1 57.Kf2 Bh2 58.f6 Ng6 59.Rh5 Bg3 60.Ke2 Rd4 61.Rh7 Ke6 62.Rc3 Re4 63.Kd1 Kf6 64.Rc5 Ra4 65.Rc6 Kg5 66.Rg7 Rd4 67.Ke2 Rd6 68.Rd6 Bd6 69.Ra7 Bb4 70.Kf3 Kf5 71.Rf7 Ke6 72.Ra7 Kf5 73.Rf7 Ke6?? 74.Ra7 Ne5 75.Ke4 Nc4 76.Kd3 Nd6 77.Rh7 Nf5 78.Ra7 Ke5 79.Rb7 Ne7 80.Rb5 Kf4 81.Rb6 Nd5 82.Rg6 Ne7 83.Rb6 Nd5 84.Rg6 Be7 85.Kd4 Ne3 86.Re6 Nf5 87.Kd5 Ne3 88.Kd4 Nf5 89.Kd5 Bg5 90.Re4 Kg3 91.Re5 Ne3 92.Ke4 Bf4 93.Ra5 Ng2 94.Ra3 Kg4 95.Ra7 h3 96.Rg7 Bg5 97.Rb7 h2 98.Rb1 Ne3 99.Rh1 Kg3 100.Rb1 Kg2 101.Rb2 Kg1 102.Rh2 Kh2 103.Ke5 Kg3 104.Kd4 Kf4 105.Kc3 Ke4 106.Kb4 Be7 107.Kc3 Bf8 108.Kb3 Kd4 109.Ka4 Kc5 110.Kb3 Bg7 111.Ka4 Bc3 112.Kb3 Bd2 113.Ka4 Kc4 114.Ka3 Nd1 115.Ka4 Nb2 116.Ka3 Kc3 117.Ka2 Nc4 (118.Kb1 Kb3 119.Ka1 Be3 120.Kb1 Na3 121.Ka1 Bd4) 0–1. Bestia – Quark, computer chess game, 2001.

4.h3 Bf5 5.a3 e6 6.g4 Bg6 7.Ne5 Nbd7 8.Ng6 hg6 9.Bg2 c6 10.Nc3 Bd6 11.g5 (11.Qd3 e5=+) 11...Nh5-/+ 12.e4 Qc7 (12...a5 13.ed5 ed5 14.b5-/+) 13.Qg4 Nb6 (13...0-0-0 14.0-0-/+) 14.0-0=+ 0-0 15.Re1 Bh2 (15...Rfd8 16.Rb1=+) 16.Kh1 Bd6 (16...Bf4 17.ed5 Nd5 18.Ne2 Bc1 19.Rec1-/+) 17.Kg1 Bh2 (17...Rfe8 18.Rb1=+) 18.Kh1 Bd6 (18...Bf4 19.ed5 Nd5 20.Ne2 Bc1 21.Nc1=+) 19.e5 (19.Kg1!?=) 19...Be7=+ 20.Rb1 a5 21.Bf1 ab4 22.ab4 Nc4 23.Bc4 dc4 24.Kg2 b5 25.Ne4 Ra2 26.c3 Rfa8 27.Re2 R2a4 28.Be3 Qd7 29.Rc2 Qd5 30.Qf3 Ra3 31.Rd1 f6 32.gf6= gf6 33.Rg1 f5 34.Nc5 Ng7 35.Nb7 Kf7 36.Qd5 ed5 37.Na5 Ra6 38.Rb1 Ne6 39.Bc1 Ra4 40.f4 Bb4 41.cb4 Nd4 42.Rf2 c5 43.Bd2 cb4=+ 44.Nb7 Nc6 45.Nd6 Kg8 46.e6 c3 47.Nb5 cd2-/+ 48.Rd2 Ra2 49.Ra2 Ra2 50.Kf3 Rc2 51.Nc7=+ Rc3 52.Kg2 Ne7-+ 53.Nb5 Rc4 54.Kg3 d4 55.Kh4 d3-+ 56.Rd1 Rf4 57.Kg3 Re4 58.Rd3 Re6 59.Kf4 Nc6 60.Kg5 Ne5 61.Rb3 Nf7 62.Kf4 Re4 63.Kf3 Kg7 64.Nc7 Ne5 65.Kf2 Kf6 66.Na6 Kg5 67.Kf1 Nc6 68.Rg3 Kh5 69.Rb3 Kh4 70.Kf2 g5 71.Nc7 Na5 (71...Na5 72.Rb1 b3-+) 0–1. Walczak,Andrzej (2365) – Abramov,Sergey Pavlovich, 60yearsBdF–WS47, 2006.

4.Bb2 Qd6 5.a3 (5.c3 A) 5...Bf5 6.Na3 (6.e3 Nbd7 7.Na3 c6 8.Nh4 Be6 9.Bd3 Bh6) 6...Bh6 7.e3 Nbd7 8.Bd3 Bd3 9.Qd3 0-0; B) 5...Bh6 6.e3 (6.Na3 Bf5 7.e3 Nbd7 8.Bd3 Bd3 9.Qd3 a5) 6...Bf5 7.Bd3 Nbd7 8.0-0 c6 9.Bf5 gf5; C) 5...Bg7 6.e3 (6.Na3 Bf5 7.e3 c6 8.Nh4 Be6 9.Bd3 0-0) 6...a5 7.b5 0-0 8.Bd3 Nbd7 9.0-0 Re8; 5.Ba3 A) 5...Bf5 6.b5 (6.e3 Nbd7 7.Bd3 Bh6 8.0-0 Ne4 9.b5 Qf6) 6...Qb6 7.e3 a6 8.Bc5 Qa5 9.Qd2 ab5; B) 5...a6 6.e3 (6.Nbd2 Bh6 7.c4 0-0 8.Qb3 dc4 9.Nc4 Qd8) 6...Bg7 7.Bd3 0-0 8.0-0 b5 9.Nc3 Nc6; C) 5...Bh6 6.e3 (6.b5 Qb6 7.e3 a6 8.Bc5 Qe6 9.Nc3 b6) 6...0-0 7.Bd3 b5 8.0-0 a6 9.Nc3 Nc6) 5...a5 (5...Bg7 6.Nc3 (6.e3 Nc6 7.Nc3 0-0 8.Bd3 e5 9.Nb5 Qd8) 6...a5 7.e3 0-0 8.Bd3 Bg4 9.ba5 Nc6; 5...Bd7 6.Ne5 (6.Nc3 Bg7 7.e3 0-0 8.Bd3 a5 9.b5 Be6) 6...Bg7 7.c4 Be6 8.cd5 Bd5 9.Nc3 0-0) 6.c3 (6.b5 Bg7 7.c4 0-0 8.Nbd2 Bf5 9.e3 c6; 6.Nbd2 Bh6 7.b5 Bf5 8.e3 Nbd7 9.Bd3 e6) 6...Bg7 (6...Bf5 7.e3 Nbd7 8.Nbd2 Bg7 9.Nh4 Be6) 7.e3 (7.Nbd2 0-0 8.e3 Bf5 9.Be2 ab4) 7...Bg4 (7...Bf5 8.Bd3-/+ (8.Be2 0-0 9.0-0 Nbd7) 8...e6 9.Qe2 0-0) 8.h3+= (8.Be2 0-0 9.0-0 Nbd7) 8...Bf3 (8...Bf5 9.Bd3 Be4) 9.Qf3 ab4 (9...0-0 10.Nd2=) 10.cb4= Ne4 11.Bd3 f5 12.Qe2 (12.Nc3 0-0=) 12...0-0 13.Nd2 Nd7 14.0-0 e5 15.Ne4 fe4 16.Bc2 ed4 17.ed4 Nb6 18.Bb3 Na4 ½–½. Greely,Simon – Hardy,Roger (1960), Torquay ENG, e2e4 Open, 2013. (=1.d4 Nf6 2.Nf3 g6 3.b4 d5)

4.Nbd2 Qd6 5.Rb1 Bg7 6.e3 a5 7.b5 Bf5 8.a4 Nbd7 (8...0-0 9.Be2=) 9.Ra1 (9.Nh4 Bg4 10.f3 Be6=) 9...c5= 10.bc6 bc6 11.Ba3 Qc7 12.Nb3 Ne4 13.c4 Nb6 14.Nc5 Nc5 15.Bc5 dc4 16.Rc1 0-0 17.Bc4 Nc4 18.Rc4 Rfd8 19.Qe2 Rab8 20.0-0 Bc8 (20...e5 A) 21.Ne5? Be5 22.de5 Bd3-+ (22...Qe5?! 23.Bd4 Qe6 24.Rd1+=); B) 21.Rcc1=) 21.Rc3+= Be6 22.Qc2 (22.Rfc1 Bb3=) 22...Qb7 (22...Bf5 23.e4 Bg4 24.e5=) 23.Nd2 Qb2 (23...Qd7!?+=) 24.Be7+/– Rd7? (24...Qc2 25.Rc2 Rd7 26.Ba3+/–) 25.Ba3 (25.Rb1 Qb1 26.Nb1 Re7 27.Nd2+– (27.Rc6 Bf5 28.Qd2 Rb1 29.Rc1 Reb7-+)) 25...Qc2+/– 26.Rc2 Bb3?? (better is 26...Bd5+/–) 27.Rb2+– (27.Nb3?! Rb3 28.Ra1 Rb6+–) 27...Rdb7 (27...Bd4 28.ed4 (worse is 28.Rb3 Rb3 29.Nb3 Bc3+–) 28...Rd4 29.Rb3 Rb3 30.Nb3 Ra4 31.Bd6+–) 28.Rfb1 (28.Nb3?! Rb3 29.Rfb1 Rb2 30.Rb2 Rb2 31.Bb2 c5+–; 28.Rb3?! Rb3 29.Bd6 Rb2 30.Bb8 Rd2+/–) 28...c5 (28...Bf8 29.Bf8 (29.Nb3? Ba3 30.Rc2 Rb3 31.Rb3 Rb3-+) 29...Kf8 30.Rb3+–) 29.Rb3 Rb3 30.Rb3 Rb3 31.Nb3 c4 (31...cd4 32.ed4 Bf8 33.Bf8 Kf8 34.Na5+–) 32.Na5 c3 33.Nb3 f5 34.a5 c2 35.a6 1–0. Reitz,Theresa (1750) – Bui,Ngoc Han Julia (1755), German Youth Championship G14, 2016. (=1.d4 Nf6 2.Nf3 d5 3.b4 g6)

4.e3 a5 5.b5 c6 (5...Bg7 6.Bd3=) 6.a4 cb5 7.ab5 (7.Bb5 Bd7=) 7...Nbd7 (7...Bf5 8.c4=) 8.c4 dc4 9.Bc4 Nb6 10.Be2 Nbd5 11.Nfd2 Bf5 12.Bb2 Nb4 13.Na3 Nd3 14.Bd3 Bd3 15.Qb3 Bf5 16.Nac4 Bg7 17.f3 g5 18.e4 Bg6 19.0-0 Nh5 20.Qe3 Nf4 21.g3 Bd4 22.Bd4+– Qd4 23.gf4 Qe3 24.Ne3 gf4 25.Nd5 0-0-0?! 26.Ra5 Kb8 27.Rfa1 (27.Rfa1 Rd5 28.ed5+–) 1–0. Santasiere,Anthony – Richman,J, New York, 1942.

4.e3 Bg4 5.Be2 c6 6.Nbd2 e6 7.Rb1 b5 8.Ne5 Be2 9.Qe2 Bd6 10.Nd3 Nbd7 (10...a5!?+=) 11.e4= de4 12.Ne4 Ne4 13.Qe4 Qc7 14.h3 0-0 15.0-0 Rfe8 16.Qf3 Bf8 17.Bf4 Qb6 (17...Bd6 18.Bd6 Qd6 19.Rbd1=) 18.Nc5 Nc5 19.dc5 Qb7 20.Be5 Bg7 21.Bg7 Kg7 22.c4 a6 23.Rfd1 Red8 24.Rd8 Rd8 25.a4 ba4 26.b5 (26.Qc3 Kg8=) 26...ab5+= 27.cb5 Rd5 28.Qc3 Kg8 29.b6 Rd8 30.Qc4 a3 31.Ra1 Ra8 32.Qd3 a2 33.Qc4 Qd7 34.Ra2 Ra2? (better is 34...Rd8+/–) 35.Qa2+– Qd1 36.Kh2 Qd4 (36...Qd8 37.g3 Qd7 38.Qa8 Kg7 39.b7+–) 37.b7 Qe5 38.g3 Kg7 39.Qb1 Qd4 40.Kg1 1–0. Schreiber,Kurt (2055) – Titsch,Leonard, Oberliga Ost–B, 2008. (=1.d4 Nf6 2.Nf3 g6 3.b4 d5)

4.e3 Bg4 5.h3 Bf5 6.c4=.

4.Bf4 Bg7 5.e3 0-0 6.Nc3 b6 7.Ne2 c5 8.Bb8 Rb8 9.c3 Qd6 10.a3 Ne4 11.Nd2 Nd2 12.Qd2 e5 13.de5 Qe5 14.f4 Qe7 15.Kf2 Re8 16.Ng3 Bd7 17.Be2 Rbc8 18.Rac1 cb4 19.cb4 Rcd8 20.Rhe1 Be6 21.Bb5 Rf8 22.Ne2 Qh4 23.Kg1 Bg4 24.Nd4 Bd7 25.Be2 Rc8 26.Bf3 Rc1 27.Rc1 Be6 28.Nc6 Bf6 29.Bd5 Bb2?? 30.Qb2+– Bd5 31.g3 Qg3 32.hg3 Bc6 33.Rc6 h5 34.Qf6 Re8 35.f5 Rf8 36.fg6 (36...fg6 37.Qe7 g5 38.Rg6 Kh8 39.Qg7) 1–0. Calin – Lentsho, ChessWorld.net, 2003.

4.Bf4 Bg7 5.e3 0-0 6.Nbd2 c6 7.a4 a5 8.c3 ab4 9.cb4 Qb6 10.Qb3 Bd7 11.Bd3 Na6 12.Rb1 Nh5 13.Bg5 f6 14.Bh4 Kh8 15.Bg3 Ng3 16.hg3 Kg8 17.0-0 Nc7 18.Rfc1 Qa7 19.Ra1 b5 20.ab5 Qa1= 21.Ra1 Ra1 22.Kh2 cb5 23.Qc3 Ra7 24.Qc5 Rb7 25.Nb3 e6 26.Na5 Na6 27.Qd6 Ra7 28.Nc6 Bc6 29.Qc6 Nb4 30.Qe6 Kh8 31.Bb5 Rb7 32.Be2 Rfb8 33.g4 Rb6 34.Qd7 R6b7 35.Qd6 Rb6 36.Qc7 R6b7 37.Qf4 h6 38.Nh4 Kh7 39.Qd6 Rb6 40.Qd7 R6b7 41.Qe6 Rd8 42.Kg3 Rdd7 43.Qe8 Rf7+= 44.Qa4 Bf8 45.Bb5 Ra7 46.Qb3 Bd6 47.Kh3 Ra1 48.f4 Re7 49.Qc3 Ra5 50.Bf1 Rc7 51.Qb3 Rca7 52.Qb1 Rg7 53.g3 Ra3 54.Qc1 Ra8 55.Bb5 Rb8 56.Bf1 Ra8 57.Bg2 Nd3 58.Qd2 Ra3 59.Bd5+– Bb4 60.Qe2 Re7 61.Ng2 Ne1 62.Qb5 Nd3 63.Nh4 Re3 64.Qb8 Nf4 65.Qf4 Rg3 66.Qg3 Rg3 67.Kg3 Be1 68.Kh3 Kg7 69.Nf3 Bc3 70.Kg2 f5 71.gf5 gf5 72.Bc6 Kf6 73.Bd7 f4 74.Kh3 Ke7 75.Bc6 Kd6 76.Ba8 Bb2 77.Kg4 Bc1 78.Kh5 Ke6 79.Kh6 Kf5 80.Kh5 Ba3 81.Nh4 Kf6 82.Kg4 Bc1 83.Ng2 Bb2 84.d5 Ke5 85.Nf4 Ba3 86.Nd3 Ke4 87.Nf2 Ke5 88.Kg5 Bc1 89.Kg6 Kd6 90.Kf5 Ba3 91.Ne4 Ke7 92.Bc6 Kd8 93.Ke6 Kc7 94.Ba4 1–0. Mrkonjic,N (2380) – Radovic,Janko (1985), 2nd ch–Vojvodina, 2011.

5.a3 a5 6.b5=.

5.a3 Bf5 6.Bd3 Bd3 7.Qd3 b6 (7...Qd6 8.0-0=) 8.0-0 (8.c4 a5 9.cd5 ab4+=) 8...0-0 (8...c5 9.dc5 bc5 10.bc5=) 9.Re1 (9.c4 c5=) 9...Nbd7 (9...a5 10.b5=) 10.c4 (10.Nbd2 c5=) 10...c5 (10...dc4 11.Qc4 c5 12.Bb2=) 11.dc5 (11.cd5 Nd5 12.e4 Nc7+=) 11...dc4 12.Qc4 Nd5 (12...bc5 13.Bb2=) 13.Qd5?? (better is 13.Ra2 N5f6 14.c6+–) 13...Ba1=+ 14.Bd2 (14.Rd1 Nf6 15.Qb3 Qc7=) 14...e6 (14...bc5 15.bc5 e6 16.Qa2=+) 15.Qd3 Bg7 16.Nc3 bc5-+ 17.b5 Nb6 18.Qd8 Rfd8 19.Rd1?? Rac8 20.Be1 Rd1 21.Nd1 c4 22.Nc3 Bc3 23.Bc3 Nd5 24.Bd4 Rc7 25.Kf1? c3 26.Ne1 f6 27.Nc2? e5 28.Bc3 Rc3 29.Ne1 Ra3 30.Ke2 Rb3 31.Nd3 Rb5 32.Kd2 Nb4 33.Nb4 Rb4 34.Kc3 Rb8 35.f3 a5 (36.Kd3 a4-+) 0–1. luthier – dadeetdeetbleep, Caissa.com, 2004.

5.a4 0-0 6.Be2 Nbd7 7.0-0 Ne4 8.c4 dc4 9.Bc4 e5 10.Bb2 ed4 11.Bd4 Qe7 12.Bg7 Kg7 13.Qb3 Nb6 14.Nc3 Bg4 15.Ne4 Qe4 16.Bd3 Qe7 17.a5 Bf3 18.gf3 Nd7 19.Qc3 Qf6 20.Rfc1 Qc3 21.Rc3 c6 22.b5 cb5 23.Bb5 Nf6 24.Rc7 Rab8 25.e4 (25.a6!? ba6 26.Ba6+/–) 25...a6= 26.Ba4 Rfd8 (better is 26...b5!? 27.Bb3 Rbd8=) 27.Rb1+= Rd4 28.Bc6 Rc4 29.e5 (worse is 29.Rcb7 Rc8 30.Bd7 R8c7+=) 29...Nd7 30.e6 (worse is 30.Rcb7 Rb7 31.Bb7 Ne5 32.Ba6 Ra4+=) 30...bc6 (30...Rc6? 31.Rc6 Ne5 32.Rc7 Nf3 33.Kg2+–) 31.Rb8 Nb8 32.Rf7 Kg8 33.Rb7 Kf8 34.Rb8 Ke7 35.Rb6 Ke6 36.Ra6 Kd5 37.Ra7 Ra4 38.Rh7 Ra5 39.Rg7 Ra1 40.Kg2 c5 41.Rg6 c4 42.Rg8 ½–½. Kivimaki,Jaakko (2200) – Tanni,Kalle (2455), Finjub30 IM corr, 1991. (=1.d4 Nf6 2.Nf3 g6 3.b4 d5 4.e3 Bg7)

5.a4 0-0 6.Be2 Nfd7 7.Ba3 e5 8.b5 Re8 9.c3 b6 10.Ra2 Bb7 11.de5 a6 12.Rd2 ab5 13.ab5 Ne5 14.0-0 Nbd7 15.c4 Ng4 16.cd5 Ndf6 17.h3 Nh6 18.d6 Ne4 19.dc7 Qc7 20.Rd7 Qc8 21.Qd3?? Ra3!-+ 22.Na3 Nc5 23.Rc1 Qd7 (23...Qd7 24.Qd7 Nd7-+) 0–1. Kivimaki,Jaakko – Oll,Lembit (2570), Helsinki SKF op, 1990.

5.a4 0-0 6.Be2 Nfd7 7.Ba3 e5 8.b5 Re8 9.c3 e4 10.Nfd2 f5 11.g3 Nf6 12.c4 c6 13.Nc3 Be6 14.Qb3 Nbd7 15.0-0 Nf8 16.a5 Rc8 17.bc6 bc6 18.cd5 Nd5 19.Nd5 Bd5 20.Qc2 Ne6 21.Nc4?? c5-+ 22.Qa4 Rb8 23.Rab1 cd4 24.Nd6 Rf8 25.Bc4 Bc4 26.Qc4 Qd7 27.ed4 h5 28.Bc5 Kh7 29.a6 ½–½. Kivimaki,Jaakko – Heino,Hannu, FIN–chT Finland, 1991.

5.a4 0-0 6.Be2 Ne4 7.c4 c6 8.Qb3 Be6 9.Nc3 dc4 10.Bc4 Bc4 11.Qc4 Nc3 12.Qc3 Qd5 13.0-0 Nd7 14.Ba3 Rfe8 15.Rfd1 Nb6 16.a5 Nc4 17.Rdc1 Na3 18.Ra3 a6 19.Qc5 Rad8 20.Qb6 Rd7 21.Rac3 e5 22.Rc5 Qd6 23.d5 cd5 24.Qd6 Rd6 25.Rc7 b6 26.Ra7 ba5 27.ba5 d4 28.Rcc7 de3 29.fe3 e4 30.Rf7 Bh6 31.Ng5 Bg5 32.Rg7 ½–½. Kivimaki,Jaakko – Holmsten,Aleksei, Jyvaskyla op, 1991.

5.a4 Ne4 6.c3 Nd7 7.Qb3 Ndf6 8.Ra2 0-0 9.Ba3 (9.Be2 Qd6=) 9...Re8 10.h3 Nd6 (10...Bf5 11.g4 Be6 12.Nbd2+=) 11.Nbd2 Nfe4 12.Be2 (12.Qd5?? Be6 (12...Nc3?! 13.Qb3 Na2 14.Qa2-+) 13.Qa5 Ba2-+) 12...Nd2 13.Rd2 Ne4 14.Rd1 e6 15.c4 c6 16.0-0 f5 17.b5 Bd7 18.Rc1 g5 19.Rc2 h5 20.Nd2 Nf6 21.Bd6 h4 22.Be5 g4 23.hg4 Ng4 24.Bf4 Kf7 25.Nf3 Bf6 26.Nh2 Rg8+/– 27.f3 Nh2+= 28.Kh2 Rg3? 29.bc6 Bc6 30.cd5 Bd5+/– 31.Bc4 Rc8?? 32.Bd5+– Rc2 33.Be6 (33.Be6 Ke7 34.Qc2 (34.Bg3 hg3 35.Kg3 Qh8=) 34...Ke6 35.Qb3 Qd5 36.Qd5 Kd5 37.Bg3 hg3 38.Kg3+–; 33.Qc2?! ed5 34.Bg3 hg3 35.Kg3 f4 36.ef4 Qg8 37.Kf2 Bd4 38.Ke1 Qg3 39.Kd1 Qf4+–; 33.Bg3 hg3 34.Kh1 Qh8 35.Kg1 Qh2) 1–0. Rantanen,Y (2375) – Petkovic,P (2145), Politiken Cup, Helsingor DEN, 2009.

5.c4 dc4 6.Bc4 0-0 7.a4 Nbd7 8.0-0 c6 9.Nbd2 Nb6 10.Bb3 a5 11.Ba3 ab4 12.Bb4 Nbd5 13.Ba3 Nd7 14.e4 (14.Qc2 Re8+=) 14...N5f6 (14...Nc3!? 15.Qe1 Na4=) 15.Qc2+= Re8 16.Rad1 e6 17.Nc4+/– Bf8 18.Bf8 Rf8+/– 19.Rfe1 Qc7 20.e5 Ne8 21.Qd2 b5 22.ab5 cb5 23.Ne3 Bb7 24.d5 Ne5 25.Ne5 Qe5 26.de6 fe6 27.Ng4 Qg7 28.Re6 Kh8 29.Rde1 Ra1? 30.Bd1+– Nc7? 31.Re7 Rf7 32.Rc7 (32.Rc7 Ra8 33.Rf7 Qf7 34.Qb2 Qg7 35.Qg7 Kg7 36.Re7 Kg8 37.Nf6 Kf8 38.Rb7+–) 1–0. Santasiere,Anthony – Davidson, Peoria, 1945.

5.c4 c6 6.Bb2 Bg4 7.h3 Bf3 8.Qf3 Nbd7 9.Nd2 0-0 10.Bd3 Re8 11.0-0 e5 12.Qg3 e4 13.Be2 Qb8 14.Qb8 Rab8 15.a4 dc4 16.Nc4 Bf8 17.b5 cb5 18.ab5+/– Nd5 19.Ra7+– N7b6 20.Nb6 Nb6 21.Rfa1 Rec8 22.R1a2 Rc2 23.Bd1 Rd2 24.Bb3 Bb4 25.f3 ef3 26.gf3 Kf8?? 27.Ba3+– Ra2 28.Bb4 Kg7 29.Ba2 (29...Nc8 30.Ra3+–) 1–0. pierred – rubenstein1988, Yahoo, 2005.

5.Nbd2 0-0 6.c4 a5 7.b5 Ne4 8.cd5 Nd2 9.Qd2 Qd5 10.Ba3 Re8 11.Rc1 Bg4 12.Be2 c6 13.bc6 Nc6 14.h3 Bf3 15.Bf3 Qb5 16.Rc5 Qb1 17.Qc1 Qc1 18.Rc1 Nb4 19.Bb7 Nd3 20.Kd2 Nc1 21.Ba8 Na2 22.Bc6 Rc8 23.Rb1 Nb4 24.Be4 Rb8+= 25.Rc1 f5 26.Bf3 e5 27.de5 Rd8 28.Ke2 Be5 29.Rc5 Bf6 30.g4 f4 31.Ra5 Nc2 32.Bc5 Bc3 33.Ra8 Ra8 34.Ba8 fe3 35.fe3 Nb4 36.Bb7 Kf7 37.Bd4 Bd4 38.ed4 h5 39.g5 Ke6 40.Be4 Kf7 41.Ke3 Na6 42.Kf4 Nc7 43.Ke5 h4 44.d5 1–0. Arkell,Keith C (2415) – Bremner,Adam (2195), Hastings ENG, Open, 2011.

5.Nbd2 0-0 6.Bd3 b6 (6...Qd6 7.Rb1=) 7.Bb2 (7.c4 c5=) 7...Bb7 (7...Qd6 8.a3=) 8.0-0+= Nbd7 (8...Qd6 9.a3+=) 9.c4 (9.Rb1 a5 10.b5 Rc8+=) 9...c5= 10.dc5 (10.a3 a5=) 10...bc5 11.b5 (11.a3 Rb8=) 11...Re8 (11...a6 12.ba6 Ba6 13.Qe2=) 12.cd5+= Bd5 (12...Nb6 13.Qc2 Nbd5 14.a3+= (worse is 14.Qc5 Ne3 15.Qe3 Nd5=)) 13.Qe2 e5 (13...Qa5 14.e4 Be6 15.Ng5+=) 14.e4 Bb7 (14...Be6 15.Ng5+= (worse is 15.Be5 Ne5 16.Ne5 Ng4+=)) 15.Nc4 e5 becomes the focus of attention (15.Rfd1 Nh5+=) 15...Qc7+= 16.a4 (16.Qc2 Nh5+=) 16...Nh5 17.g3 f5 (17...Nhf6 18.Rfd1+=) 18.Ncd2+/– (worse is 18.ef5 e4-/+) 18...f4 (18...fe4 19.Bc4 Kh8 20.Ng5+/–) 19.Bc4 Kh8 20.Ng5 h6 21.Ne6 Qd6 22.Ng7 Ng7 23.a5 (23.gf4 ef4 24.Rfd1 Kh7+/–) 23...Rad8 24.Rfd1 (24.Rad1 Ne6+/–) 24...Qe7 (24...Qf6 25.Nf3+/–) 25.Nf3 (25.gf4 ef4 26.Qg4 Kh7+/–) 25...Kh7 26.Bd5 (26.Rd3 Nf6+/–) 26...Nf6 (26...Bd5 27.Rd5 (27.ed5?! fg3 28.fg3 Nf5=) 27...Ne6 28.Ne5 (28.Be5?! Ne5 29.Re5 Qf6=) 28...Ne5 29.Re5+/– (29.Be5? Rd5 30.ed5 Nd4-+)) 27.Bb7 Qb7 (27...Rd1 28.Rd1 (28.Qd1?! Qb7 29.Be5 Ne4+=) 28...Qb7 29.gf4 Ne4 30.Ne5+–) 28.Be5 (28.Rd8 Rd8 29.Re1 fg3 30.fg3 Ne6 31.Ne5 Nd4+–) 28...Ne4 (28...Rd1 29.Rd1 (29.Qd1?! Ne4 30.Qd3 fg3 31.fg3 Nd2 32.Qd2 Qf3+=) 29...Re6 30.a6+–) 29.a6 (29.Bf4?? Nc3 30.Qf1 Rd1 31.Rd1 Qf3-+) 29...Qa8 30.Rd8 (30.Bf4?? Nc3 31.Qf1 Rd1 (worse is 31...Qf3 32.Rd8 Ne2 33.Qe2 Re2 34.Be3-+) 32.Rd1 Qf3-+) 30...Rd8 31.Re1 (31.Bf4?! Nc3 32.Qe3 Nd5=) 31...Ng5 (31...fg3 32.Qe4 Qe4 33.Re4 gh2 34.Nh2 Rd1 35.Kg2+–) 32.Ng5 hg5 33.Bg7 Kg7 34.Qe5 (34.Qe7 Kh6 35.gf4 Rd5+–) 34...Kh7 (34...Kh6 35.gf4 (35.Qc5?! Rd5 36.Qc4 Qd8+–) 35...Rd5 36.fg5 Kh7 37.Qe7 Kg8 38.b6 ab6 39.Qe6 Kg7 40.Qf6 Kg8 41.Qg6 Kf8 42.Qf6 Kg8 43.g6+–) 35.Qg5 Re8 (35...Rd7 36.Qc5 fg3 37.Re7 Re7 38.Qe7 Kg8 39.hg3+–) 36.Rd1 Qe4 (36...Qc8 37.Qf4 Kg8 38.Qf6+–) 37.Qf4 (37.Rd7 Kg8 38.Qf6 Qe1 39.Kg2 Qe4 40.Kh3 Qe6 41.Qe6 Re6 42.Ra7 fg3 43.hg3 Rf6 44.Ra8 Kf7+–) 37...Qe6 (37...Qf4 38.Rd7 Kh6 39.gf4 Re1 40.Kg2 Rb1+–) 38.Rd6 Qe1 39.Kg2 Re7 (39...Qe7 40.Rc6 Qe4 41.Qe4 Re4 42.Rc7 Kh6 43.Ra7 Rb4+–) 40.Qh4 (40.Qh4 Kg8 41.b6+–) 1–0. Pedersen,Finn (2295) – Cichy,K (2050), 28. NATO Chess, 2017. (=1.d4 Nf6 2.Nf3 g6 3.b4 d5 4.e3 Bg7)

5.Be2 0-0 6.a4 Nfd7 7.c3 e6 8.b5 a6 9.Ba3 Re8 10.Nbd2 c6 11.0-0 e5 12.Kh1 f5 13.Qb3 e4 14.Ng1 Nf6 15.c4 Nbd7 16.cd5 cd5 17.Rac1 Nf8 18.Rc3 Ne6 19.Rfc1 Bh6 20.Qc2 f4 21.Nf1 g5 22.ba6 ba6 23.Qd1 Qa5 24.Bh5+/– Bd7 25.Be8 Re8 26.Bd6 f3 27.gf3 ef3 28.Ng3 g4 29.Nf3 gf3 30.Qf3 Bg7 31.Nh5 Nh5 32.Qh5 Nf8 33.Rc7 Qa4 34.Bf8 Kf8 35.Qf3 Kg8 36.Qd5 Be6 37.Qg5 Bf7?? 38.Rf7!+– Kf7 39.Rc7 Ke6 40.Qg7 (40.Qg7 Qb5 41.Qh6 Kd5 42.Rc5 Qc5 43.Qh5 Ke6 44.dc5+–) 1–0. Kivimaki,Jouko – Kiviaho,Allan (2240), FIN–chT Finland, 1993.

6.Nc3 b6 7.Nd5 Nd5 8.cd5 Qd5 9.Bd2 c5 10.Rc1 cd4 11.Bc4 Qd6 12.0-0 (12.Nd4 Bb7 13.Nb5 Qe5+=) 12...Nd7 (12...de3 13.Be3 Be6 14.Qd6 ed6 15.Rfd1 Bc4 16.Rc4=) 13.Nd4= Ne5 14.Be2 Bb7 15.f4 Nd3 16.Bd3 Bd4 17.Be2 Bg7 18.Bc3 Qe6 19.Qd2 Rad8 20.Bd4 Qd6 21.Rcd1 Bd4 22.ed4 (22.Qd4? Qc6 23.Bf3 Rd4 24.Bc6 Rd1 25.Bb7 Rfd8-+) 22...e6 23.a3 Rc8 24.Qe3 Rc2 ½–½. Sijses,Wim – Wlasow,Andrey (2220), IECG, 2004. (=1.b4 Nf6 2.Nf3 g6 3.d4 d5 4.e3 Bg7)

6.Nc3 c6 7.Qb3 Ne4 8.Bb2 dc4 9.Bc4 Nd6 10.a4 Nc4 11.Qc4 Be6 12.Qe2 Nd7 13.Ng5 Bb3 14.Ra3 e5 15.Nh7 Re8 16.Rb3 ed4 17.Nd1 Kh7 18.0-0 Nb6 19.a5 Qd5 20.Rd3 Na4 21.Bd4 Rad8 22.Qc2 c5 23.Qa4 cd4 24.ed4 Bd4 25.Ne3 Qe4 26.Qb3 Rd7 27.Rfd1 Red8 28.Qc4 Kg8 29.Kh1 Rd6 30.b5 a6 31.ba6+– ba6 32.Nc2 Qe2 33.Re1 Qg4 34.h3 Qd7 35.Red1 Rc8 36.Qb3 Be5 37.Rd6 Bd6 38.Ne3 Qe7 39.Qd3 Rc6+/– 40.Qd5 Qc7 41.Ng4 Bf4 42.g3+/– Rd6? 43.Qa8+– Kg7 44.Rd6 Bd6 45.Qa6 f5 46.Ne3 Bc5 47.Qe6 Be3 48.Qe3 Qa5 49.Qe7 Kg8 50.Qe6 Kg7 51.h4 Qa8 52.Kh2 Qf3 53.Qe7 Kg8 54.Qe3 Qd5 55.Qg5 Kh7 56.Qe7 Kh6 57.Qe3 Kh7 58.Qe7 Kh6 59.Qg5 Kh7 60.h5 gh5 61.Qh5 Kg7 62.Qg5 Kh7 63.Kg1 Qd1 64.Kg2 Qd3 65.Qf4 Qd5 66.Qf3 Qe6 67.Qh5 Kg7 68.Qg5 Kh7 69.Qf4 Kg6 70.Qd4+/– Qc6 71.Kh2 Qf3 72.Kg1 Qe2 73.Kg2 Qe6 74.f3 Qe2 75.Qf2 Qd1 76.Qe3 Qd5 77.Kh3 Kh5 78.Qe8 Kg5 79.Qe7 Kg6 80.Qe8 Kg5 81.Qe3 Kh5 82.g4 fg4 83.fg4 Kg6 84.Qe8 Kh6 85.Qf8 Kg6 86.Qf1 Kg5 87.Qc1 Kg6 88.Qf1 Kg5 89.Qc1 Kg6 90.Qg1 Qf3 91.Kh4 Qf6 92.Kg3 Qe5 93.Kh3 Qc3 94.Kg2 Qd2 95.Kf3 Qd3 96.Kf4 Qd6 97.Kf3 Qd3 98.Qe3 Qe3 99.Ke3 Kg5 ½–½. Foisor,S (2210) – Topel,Z (2085), 6th ch–EURw, Chisinau MDA, 2005.

6.Nc3 Bf5=.

6.c5 Ne4 7.Nfd2 e5 8.Ne4 ed4 9.Bb2 de4 10.Bd4 Bd4 11.ed4 Nc6 12.Nc3 Nb4 13.Bc4 Qg5 14.Kf1 e3 15.Rb1 Qf4 16.f3 a5 17.a3 Nc6 18.Ne2 Qf6 19.Rb3 Re8 20.h4 a4 21.Rc3 Bg4 22.Kg1 Bd7 23.Bb5 Re7 24.h5 Ra5 25.Bc4 b5 26.Bd5 b4 27.ab4 Nb4 28.Be4 Re4 29.fe4 Qf2 30.Kh2 Qh4 31.Kg1+= Qe4 32.hg6 hg6 33.Qe1 a3 34.Rc1 a2 35.Ra1 Bf5 36.Qc3 Qd3-/+ 37.Qb4 Qb1 38.Rb1 ab1Q 39.Qb1 Bb1 40.Kh2 Bd3 41.Nc3 Ra3 42.Nd5 e2 43.Re1 Ra4 44.Nf4 Rd4 45.Nd3 Rd3 46.Re2 Rc3 0–1. Baumann,T – Hauptmann,Gerhard, corr, 1989,

6.Nbd2 a5 7.b5+= c5 (7...Bf5 8.cd5 Qd6 9.a4+=) 8.bc6 (8.Bd3!?=) 8...Nc6+= 9.Bb2 Bf5 10.Be2 Nb4 11.0-0 Rc8 12.Qb3 Bc2 13.Qa3 Ne4 14.Rac1= Re8 15.Ne4 Be4 16.Qb3 dc4 17.Bc4 Bd5 18.Bd5 Qd5 19.Ba3 Qb3 20.ab3 Nd5 21.Rfe1 b5 22.Rc5 Rc5 23.Bc5 Rc8 24.e4 Nf4 25.Be7 Rc3 26.Bg5 Ne6 27.Bd2 Rb3 28.d5 Nd4 29.Ba5 Rf3 30.gf3 Nf3 31.Kf1 Ne1 32.Ke1 Be5 33.h3 f5 34.ef5 gf5 35.Kd2 Kf7 36.Bb4 Bd4 37.f3 Kf6 38.Kd3 Ke5-/+ 39.d6 Bb6 40.d7 Ke6 41.Bc5 Bc7 42.Bf8 Kd7 43.Kd4 Bd6 44.Bh6 Ke6 45.Bd2 Be7 46.Bf4 Kf6 47.Bd2 Kg6 48.Kd5 Kh5 49.Ke6 Ba3 50.Kf5 b4 51.Ke4 b3 52.Kd3 Kh4 53.f4 Kh3 54.f5 Kg4 55.f6 h5 56.Be1 Kg5 57.f7 Kg6 58.Kc3 b2 59.f8Q b1N 60.Kc2 Bf8 61.Kb1 Kf5 62.Kc2 Ke4 63.Bh4 ½–½. Kovacevic,Vlat (2490) – Smirin,I (2670), 7th Solana It, Solin CRO, 1999.

6.Nbd2 a6 7.Bd3+=.

6.cd5 Nd5 7.a3 a5 8.b5 a4 (8...c5 9.bc6 Nc6 10.Qb3=) 9.Bb2 (9.Qc2 c6=) 9...c5 10.bc6 bc6 (10...Nc6 11.Nc3=) 11.Nc3 Be6 (11...c5 12.Rc1 cd4 13.Nd5 Qd5 14.Bd4+=) 12.Rc1+= Qb6 (12...Nd7 13.Bd3+=) 13.Qd2 (13.Qc2 Nd7+=) 13...Nd7 14.Be2 (14.e4 Nc3 15.Bc3 Rfc8+=) 14...Rfb8 15.Nd5 (15.Nd1 N5f6=) 15...Bd5 16.Bc3 Nf6 (16...e6 17.Bb4=) 17.Bb4 Ne4 (17...Qc7 18.Qc3=) 18.Qc2+= e6 (18...Qd8 19.0-0+=) 19.0-0 Rc8 (19...Qc7 20.Bd3 f5 21.Bc4+=) 20.Bd3 (20.Rb1 Qd8+=) 20...Bb3 (20...c5 21.dc5 Nc5 22.Bc5+=) 21.Qe2 (21.Qb1 Nf6+/–) 21...Nf6 (21...f5 22.Be4 fe4 23.Ng5+/–) 22.Ne5 Nd5 23.Bc5 Qa5 (23...Qc7 24.f4+/–) 24.Qf3 (24.f4 f6 25.Nc4 Qc7+/–) 24...f5 (24...Be5 25.de5 Qd2 26.Be4+/–) 25.e4 fe4 (25...Nf6 26.Nc4 fe4 27.Be4 Bc4 28.Rc4+/–) 26.Be4 (26.Qe4 Qc7+/–) 26...Qc7 27.Rfe1 (27.Qg3 Rab8+/–) 27...Be5 28.de5 Qf7 (28...Qe5 29.Bg6 Qf4 30.Qf4 Nf4 31.Be4+=) 29.Qg4+/– Rab8 30.h4 (30.Bd6 Rb5+/–) 30...Ne7 (30...Kh8!?+=) 31.Be7+/– Qe7 32.h5 (32.Bc6?! Qa3 33.h5 Qb4+=) 32...g5 (32...Qa3 33.hg6 h6 34.Bc6+/–) 33.Bc6 (33.Rc6 h6+/–) 33...h6 34.Qe4 Qf7 35.Ba4 Bd5 (35...Rf8 36.Bb3 Rb3 37.Rc6+/–) 36.Rc8 (36.Qg4 Rc1 37.Rc1 Rf8+/–) 36...Rc8 37.Qe3 Rc4 (37...Qh5 38.Bb3+/–) 38.Bd1+– Qc7 (38...Qf5 39.a4+–) 39.Qd2 (39.Bf3 Rc5+–) 39...Qb7 (39...Rc3 40.Re3 Rc1 41.Qd3+–) 40.Be2 (40.Qd3 Rc1 41.Rf1 Qf7+–) 40...Rf4 41.Bf1 (41.Qd3+–) 41...Rg4? (41...Qf7!? 42.Rc1 Qh5 43.Rc8 Kg7 44.Rc7 Rf7 45.Rf7 Qf7 46.a4+–) 42.g3 (42.Qc2 Qf7 43.Rb1 Rf4 44.Rb8 Kg7+–) 42...Qf7 (42...Ra4 43.Re3+–) 43.Bg2 Bg2 44.Kg2 Ra4 (44...Kg7 45.Qc2 Rd4 46.Rd1 Rd1 47.Qd1+–) 45.Qd8 Kg7 (45...Qf8 46.Qd7 Ra3 47.Rc1 Qf3 48.Kg1+–) 46.Rd1 (better is 46.Rc1 Ra3 47.Rc7+–) 46...Ra7 47.Rd3 g4?! (47...Kh7 48.Qf6 Qf6 49.ef6+–) 48.a4! Qb7? (48...Ra4 49.Rd7 Combination) 49.Kg1 Qb1 (49...Kh7+–) 50.Rd1 (50.Kh2 Rf7 51.Rd7 Rd7 52.Qd7 Kf8 53.Qe6 Qe1 54.Qh6 Ke8 55.Qe6 Kd8+–) 50...Qf5 51.Rd7 Rd7 52.Qd7 Kg8 53.Qe8 Qf8 (53...Kg7 54.Qg6! Qg6 55.hg6 Kg6 56.a5+–) 54.Qf8 (54.Qf8 Kf8 55.a5+–) 1–0. Arkell,Keith C (2470) – Jarmany,John (2100), 7. 4NCL Congress, 2016. (=1.d4 Nf6 2.Nf3 g6 3.b4 d5 4.e3 Bg7)

4.c3 a5 5.b5-/+.

4.c3 Be7 5.Nf3 Ne4 (5...h6 6.Bf6 Bf6 7.Nbd2+=) 6.Be7+= Qe7 7.e3 0-0 8.Bd3 Nd7 9.0-0 Ndf6 (9...e5 10.Qb3=) 10.Nbd2 (10.Ne5 Bd7=) 10...a6 (10...a5 11.b5+=) 11.a4 (11.Ne5 Bd7+=) 11...Bd7 (11...Nc3 12.Qc2 Nce4=) 12.a5 (better is 12.Qc2!?+=) 12...Nc3+= 13.Qc2 Nb5 14.Ne5 Rfc8 15.Nd7 Qd7+= 16.f3 b6 17.ab6 cb6-/+ 18.Ra2?? Rc2-+ 19.Bc2 Qd6 20.Rfa1 Qb4 21.Ba4 Nc3 22.Bb3 Na2 23.Ra2 Rc8 24.Ra6 Qd2 (24...Qd2 25.Ra1 Qe3 26.Kf1 Qd3 27.Ke1 Qc3 28.Ke2 Qa1 29.g3 Qb2 30.Ke3 Nh5 31.Bd5 ed5 32.h3 Rc3#) 0–1. gbymar – Onion Custard, ChessWorld.net, 2009.

4.f4? Bb4 5.c3 Bd6 6.e3-/+.

4.f4? Be7 5.Nf3 Ne4 6.Be7 Qe7 7.e3 Nd7 (7...Qb4 8.Nbd2-/+) 8.Bd3 (8.a3 0-0=) 8...Ndf6 (better is 8...Qb4!? 9.Nbd2 Nc3-/+) 9.a3= Ng4 10.Qe2 Nef2 11.Rf1 Nd3 12.cd3 h6 13.Nbd2 Nh2 14.Rh1?? Nf3+= 15.Nf3 Bd7 16.Ne5 0-0 17.g4 Be8 18.g5 hg5?? 19.Qh5 (19.Qh5 Qb4 20.ab4 gf4 21.Qh7; 19.Qh2 Qb4 20.ab4 gf4 21.Qh7) 1–0. bienopia (2155) – mpopp (2050), net–chess.com, 2011.

4.a3 Nc6 5.Nf3 Bd7 (5...Bd6 6.e3=) 6.Bg5= h6 7.Bf6 gf6 8.e3= a5 9.b5 Ne7 (9...Na7 10.Nc3=) 10.a4 (10.Bd3 Rg8 11.0-0 e5 12.de5 Bh3-+) 10...Ng6 (10...Rg8 11.Nbd2=) 11.Nbd2 (11.c4 c6+=) 11...Bd6 (11...e5 12.e4=) 12.c3 (12.c4 dc4 13.Bc4 c6+=) 12...e5= 13.g4 ed4 14.ed4 Qe7 15.Qe2 Qe2 16.Ke2 0-0 17.Re1 Rae8 18.Kd1+= Bf4 19.Bd3+/– Re1 20.Re1 Re8 21.Re8 Be8 22.Nb3 b6 23.h4 c6 24.h5 c5?? 25.dc5 Ne5 26.Ne5 Be5 27.cb6 Bc3 28.b7 Be5 29.Na5 Kf8 30.Nc6 Bc6 31.bc6 Ke8 32.Bf5 Kd8 33.a5 Kc7 34.Bd7 Bd4 35.f3 Kb8 36.Kd2 Kc7 37.Kd3 Bf2 38.f4 Be1 39.a6 Kb8 40.Kd4 Ba5 41.Kd5 Bb6 42.Ke4 Bd8 43.Kd5 Ka7?? 44.Be8 Ka6 45.Kd6 Ka7 46.Kd7 Bb6 47.Kc8 (47.Kc8 Ka6 48.b8Q+–; 47.c7 Bc7 48.Kc7 Ka6 49.b8Q f5 50.Qb6) 1–0. valerypavlovich (2120) – oracleinshadows (1725), net–chess.com, 2006.

4.a3 Bd6 5.e3+=.

4.a3 Bd6 5.Nf3 Nbd7 6.Bg5 c6 7.e3 0-0 8.c3 Qc7 9.g4 (9.Bd3 a5 10.Nbd2 e5 11.Bf6 Nf6 (worse is 11...gf6 12.Nh4 Re8 13.Nf5+=) 12.de5 Be5 13.Ne5 Qe5+=) 9...Re8 (9...Ne4!?-/+) 10.Bd3+= Ne4 11.Be4 (11.c4!? e5 12.c5 Ng5 13.Ng5-/+) 11...de4-/+ 12.Nfd2 f6 13.Bh4 g5 14.Bg3 (14.Bg5!? fg5 15.Ne4-/+) 14...Bg3-+ 15.Ne4 (15.fg3 Qg3 16.Kf1 Qe3-+) 15...Bd6 (better is 15...Bh4!?-+) 16.h4-/+ Be7 17.hg5 fg5 18.Nbd2 Nf8 (18...Qd8!?-/+) 19.Nf3 e5 20.d5? (20.Ne5 Be6+=) 20...Bg4?? (better is 20...cd5 21.Qd5 Be6-+) 21.Rg1?? (21.d6 Bf3 22.Qf3 Bd6 23.Nf6 Kh8 24.Ne8 Re8 25.Qf6 Kg8-/+) 21...h5 (better is 21...Bf3!? 22.Qf3 cd5 23.Ng5 Qc3 24.Ke2 Qb2 25.Kd3 Qb3 26.Kd2-+) 22.c4? (better is 22.d6 Bd6! 23.Nd6-/+) 22...Rad8-+ 23.Ke2 (23.d6 Bd6 24.Qb3 Be7 25.Nfg5 Bg5 26.Ng5 e4 27.c5 Kg7 28.Qc3 Kg6-+) 23...Ng6 (better is 23...cd5 24.Qd3 de4 25.Qe4-+) 24.Rg3 (24.d6 Qd7 (24...Bd6?! 25.Nf6 Kf8 26.Ng4 hg4 27.Ng5-+) 25.Ke1 Qf5-+) 24...Rf8 (better is 24...cd5 25.cd5 Qc4 26.Qd3 Qd3 27.Kd3 Rd5 28.Ke2 Nh4 29.Rg4 hg4-+) 25.a4 (25.Qd3 Rf3 26.Rf3 Nh4-+) 25...Nh4 (better is 25...cd5 26.Ned2 e4 27.c5 ef3 28.Kf1-+) 26.Qh1 (26.Rg4 hg4 (worse is 26...Nf3 27.d6 Bd6 28.Rg3-+; 26...Rf3?! 27.Rh4 cd5 28.cd5 Qc4 29.Kf3 gh4 30.Qb1-/+) 27.Nh2 cd5 28.cd5 Qc4 29.Qd3 Qd3 30.Kd3 Rd5 31.Kc4 Rd7-+) 26...Rf3 (better is 26...cd5 27.Nc5 e4 28.Rg4 ef3 29.Kf1 hg4 30.a5 dc4 31.Kg1-+) 27.Rf3 (27.Rg4 hg4 28.d6 Rd6 29.Nd6 Qd6 30.Qd1 Qb4 31.Qc1-+) 27...Bf3 28.Qf3 Nf3 29.Kf3 Rf8 (29...cd5 30.Ng3 Qc4 31.Kg2-+) 30.Kg3 cd5 31.cd5 Qc4 32.d6 Qe4 33.de7 (33.f4 ef4 34.Kh2 fe3 35.Rf1 Bd6 36.Rf4 Qf4 37.Kg2 Qf1) 33...Qh4 34.Kg2 Rf2 35.Kg1 Qh2 0–1. valerypavlovich (2100) – sbeaul (2470), net–chess.com, 2016.

4.c3 Qd6 5.Nf3 Nbd7 6.Bg5 Be7 7.Bf6 Bf6 8.e3 e5 9.Be2 0-0 10.0-0 e4 11.Nh2 Bg5 12.Na3 f5 13.Nc2 f4 14.a4 Nf6 15.Ng4 Ng4 16.Bg4 f3 17.gf3 ef3 18.Ne1?? Bg4-+ 19.hg4 Qe6 20.Kh2 Qg4 21.Rg1 Qh4 0–1. danielro (2260) – stejam (2235), net–chess.com, 2011.

4.c3 Bd6 5.Nf3 Nc6 6.Bg5 h6 7.Bf6 Qf6 8.e3 Bd7 9.a4 0-0 10.b5 Ne7 (10...Na5 11.Be2). wee harv – allknight, ChessWorld.net, 2010.

4.Nf3 Bb4-/+ 5.Bd2 Bd2 6.Nbd2 0-0 7.e3 Nbd7 8.Be2 c5 9.dc5 Nc5 10.Nb3 Nce4 11.Qd3 Qc7 12.0-0 (12.c4!?-/+) 12…Nc3-+ 0-1. Noai – mizuzul, ChessWorld.net, 2021.

4.Bg5 Bb4!? 5.c3 Bd6-/+.

4.Bg5 h6 5.Bf6+= Qf6 6.a3 b5 (6...a5 7.b5+=) 7.e3 (7.e4 c6 8.e5 Qd8=) 7...Bd6 (better is 7...c6!?+=) 8.Bb5+= Bd7 9.Bd3 0-0 (9...a5 10.b5+=) 10.c3 (10.Qf3 Qf3 11.Nf3 Bc6+/–) 10...a6 (10...a5 11.b5+=) 11.Bc2 (11.Qf3 Qd8+/–) 11...a5+= 12.Qd3 ab4?? (better is 12...g6 13.b5 a4=) 13.c4 (13.Qh7) 13...ba3?? (13...Re8 14.cd5 ed5 15.Nf3-/+) 14.Na3 Ba3?? 15.Ra3 Ra3 16.Qa3 Qg5 17.Qc5?? c6 18.Qb4?? dc4 19.Qc4?? Qg2-+ 20.Be4 Qg5 21.h4 Qg4 22.Qc2+= f5 23.Bf3= Qg6 24.h5 Qf6+= 25.Nh3 e5 26.0-0 f4 27.de5= Qe6 28.Bg2 f3-/+ 29.Nf4 Qe5 30.Ng6 Qg5?? 31.Nf4?? fg2 32.Ng2 Bh3 33.f4 Qh5 34.Rf2 Nd7 35.Qc6 Nf6 36.Qf3 Qf3 37.Rf3 Bg2 38.Kg2 Ne4 39.f5 Nd2 40.Rf2 Ne4 41.Rf4?? Nf6 42.e4 Nd7 43.e5 Ne5 44.Rf2 Ng4 45.Rf4 Ne3 46.Kg3 Nf5 47.Kg4 Ne3 48.Kg3 Rf4 49.Kf4 Nf1 50.Kg4 Kh7 51.Kh5 g6 52.Kg4 h5 53.Kh4 Kh6 54.Kh3 g5 55.Kg2 Ne3 56.Kf3 Ng4 57.Kg3 Kg6 58.Kh3 Kf5 59.Kg3 h4 60.Kh3 Kf4 61.Kg2 Ne3 62.Kh3 Nf5 63.Kg2 Kg4 64.Kh2 h3 65.Kg1-+ Kh4 66.Kh2 g4 67.Kh1 Kg3 68.Kg1 h2 69.Kh1 Kh3 (stalemate) ½–½. Eries – Deano1, ChessWorld.net, 2010.

4.Nc3 e6 5.a3 a5 6.b5 c6 7.bc6 bc6 8.Nf3 h6 9.Na4 Nbd7 10.Bf4 Be7 11.Ne5 Ne5 12.Be5 0-0 13.e3 Nd7 14.Bf4 c5 15.dc5 Nc5 16.Nc5 Bc5 17.Bd3 Bh7 18.0-0 Bd6 19.Qe2 (19.Bh7 Kh7 20.Bd6 Qd6=) 19...Rb8 20.Qg4 Bf4 21.Qf4 Rb2 22.Qa4 Qb6 23.Bh7 Kh7 24.Rfc1 (24.c4 dc4 25.Qc4 Rb8=) 24...Rc8-/+ 25.c3 (25.c4 dc4 26.Rc4 Rc4 27.Qc4 Rf2 28.Kf2 Qb2 29.Kg3 Qa1 30.Qe4 g6-/+) 25...Rc4 26.Qd1 Qc5 27.Rcb1 Rb1 28.Qb1 g6 29.Qb7 Kg7 30.Qb8 Rc3 31.Qe5 Kg8 32.Kh2 Qc7 (32...Ra3? 33.Rb1 Rc3 34.Rb8 Qc8 35.e4 de4 36.Rc8 Rc8 37.Qa5+–) 33.Qc7 Rc7 34.Kg3 a4 35.Kf3 Rc3 36.Ke2 Rc2 37.Kf3 Kg7 38.g4 g5 39.Kg3 Rc3 40.Kf3 Kf6 41.Ke2 Rc2 42.Kf3 Ke5 43.Rb1 (43.h4 f5 44.hg5 hg5 45.gf5 Kf5-+) 43...Rc3 44.Ra1 d4 45.Ke2 (45.Rd1 de3 46.fe3 f5 47.gf5 ef5-+) 45...Kd5 (45...de3!? 46.fe3 Ke4 47.Kf1-+) 46.Rd1 (46.ed4 Kd4 47.Rd1 Kc4-+) 46...e5 (46...Ra3?! 47.Rd4 Kc5 48.Rd7-+) 47.ed4 ed4 (47...Ra3?! 48.de5 Ke5 49.Rd7-+) 48.f3 Ra3 49.Rb1 Rb3 50.Ra1 a3 51.Kf2 Kc4 52.Ke2 (52.Rc1 Kd3 53.Kg3-+) 52...Rb2 53.Ke1 a2 (53...a2 54.Rd1 Rb1 55.Kf1 Rd1 56.Ke2 d3 57.Kf2 Rd2 58.Kg3 a1Q 59.f4 Qf1 60.fg5 Qf2) 0–1. jaortiz (2345) – pops (2355), net–chess.com, 2014. (=1.d4 d5 2.b4 Nf6 3.h3 Bf5)

4.Nf3 Nbd7 5.e3 a6 (5...e6 6.a3=+) 6.Bd3 Be6 (6...Bd3!? 7.cd3 e5 8.de5 Bb4 9.Kf1 Nh5=+) 7.0-0 (7.Ng5 c6+/–) 7...g6+= 8.Nc3 Bg7 9.a3 b5 (9...0-0 10.Ne2+=) 10.Re1 a5 11.Bb5 ab4 12.Ne2 (12.Na4 Rb8 13.Qe2 ba3+/–) 12...Ra5 (12...0-0 13.Bc6 Ra6 14.Bb7-+) 13.Bd3 (13.Bc6 0-0+=) 13...c5= 14.dc5 Nc5 15.Bb2 Bh6?? (better is 15...Nd3 16.cd3 ba3 17.Ra3 Ra3 18.Ba3 0-0=+) 16.ab4 (16.Bf6 ef6 17.ab4 Ra1 18.Bb5 Nd7 19.Qa1 Bg7+–) 16...Ra1 17.Qa1 0-0?? (better is 17...Nd3 18.cd3 Bg7+/–) 18.bc5+– Qc7 19.Bf6 ef6 20.Qf6 Bg7 21.Qg5 Qc5 22.Nf4 Re8 23.Ne5 f6 24.Ne6 fg5?? 25.Ng7 Kg7 26.Nd7?? Qe7 27.Bb5 Rd8 28.Rd1 Rd7 29.Bd7 Qd7 30.c4 Qa4 31.Rd5 Qc4 32.Rg5 Qc1 33.Kh2 Kf6 34.h4 h6 35.Rg4 h5 36.Rf4 Kg7 37.g4 Kh6 38.g5 Kg7 39.Re4 Qf1 40.Rf4 ½–½. Kunk – boldeagle, ChessWorld.net, 2005.

4.Nf3 Ne4 5.Bb2 Qd6 6.a3 g6 7.g4 Bd7 8.Nc3 Bg7 9.Bg2 Nc3 10.Bc3 0-0 11.0-0 f5 12.Ne5 fg4 13.hg4 Be5?? 14.de5+– Qc6?? 15.Bd5 (15.Bd5 Be6 16.Bc6 Nc6 17.g5+–) 1–0. pierred – dc2002253, internet, 2008.

4.Nf3 e6 5.a3 Bg6 6.Nc3 Bd6 7.Nh4 Nc6 8.Ng6= hg6 9.Bg5 Be7 10.e3 0-0 11.Bd3 Nd7 12.Be7 Qe7 13.0-0 Nb6 14.Qf3 a5 15.b5 Na7 16.Rfb1 Nac8 17.e4 c6 18.bc6 bc6 19.Rb3 Qc7 20.Rab1+/– Rb8 21.Na4 Nd7 22.Rb8 Nb8 23.Nc5 Nd6 24.e5+– Nb5 25.Bb5 cb5 26.Rb5 Nd7? 27.Rb7 Qc6 28.Rd7 f5 29.Qg3 Qb5 30.Qg6 Qb1 31.Kh2 (31.Kh2 Qg1 32.Kg1 Rf7 33.Qf7 Kh7 34.Qg7#) 1–0. pierre – Kasparovsky, internet, 2008.

3.c3 Bf5 4.Nf3=.

3.Nc3 d5 4.a3+=.

3.Nc3 e6 4.Nf3 (4.Rb1 d5=) 4...d5 5.Rb1 (5.a3 Be7=) 5...a5 6.ba5 Ra5 7.e3 (7.Bg5 h6 8.Bf6 Qf6=) 7...Ba3 (7...Bd6 8.Bd3=) 8.Ba3 Ra3 9.Rb3 Qd6?? (better is 9...Qe7=) 10.Nb5+– Qa6 (10...Qe7 11.Ra3 0-0+–) 11.Nc7 Ke7 12.Na6 Rb3 13.Nb8 Rb6 14.Ne5 Ne4 15.Bd3 Nc3 16.Qh5 Rb1 17.Kd2 Rh1 18.Qf7 Kd6 19.Kc3 g6 20.Na6! Rh2 21.Qc7# 1–0. Rosner,Dirk – Krahl, e–mail, 1999.

3.c4 b6 4.b5 Bb7 5.d5 Nbd7 6.Bg5 Ne4 7.h4 f6 (7...a6 8.Nf3=+) 8.f3 (8.Be3!?=) 8...Ng3 9.Rh3 Nf1 10.Kf1?? (10.Bc1 Ne5 11.Kf1 Nc4=+) 10...Ne5?? (better is 10...fg5 11.hg5 e5 12.de6 Ne5-+) 11.Bc1-/+ Nc4 12.e4 Bc8 13.Qd4 (13.Rg3 a6-/+) 13...Bh3 14.Qc4 (14.Nh3 Ne5 15.Nf4 Qd7-+) 14...Bd7 15.Bf4 (15.Ne2 a6 16.Nbc3 Rc8-+) 15...Qc8 16.Nc3 e5 (16...a6 17.Rc1-+) 17.Be3 (17.de6 Be6 18.Nd5-+) 17...Be7 18.a4 f5 19.h5 0-0 (19...f4) 20.Nge2 f4 21.Bf2 Bg5 22.g4? (22.a5 ba5 23.Ra5 Be8-+) 22...Rf7 23.Na2 Bg4 24.fg4 Qg4 25.Ke1 Bh4 26.Bh4 Qh4 27.Kf1 Qh3 28.Ke1 (28.Kf2 Qh2 (28...Qh5?! 29.Rf1-+) 29.Kf3 Qh5 30.Kf2 Qh2 31.Kf3 Qh3 32.Kf2 Qe3 33.Kf1 Qf3 34.Ke1 Qh1 35.Kd2 Qa1-+) 0–1. arian1230 – dugmak, ChessWorld.net, 2005.

3.c4 e6 4.Nc3 Be7 5.a3 0-0 6.Bb2 c5 7.e4 cd4 8.Qd4 Nc6 9.Qd3 Ne5 10.Qe2 b6 11.f4 Ned7 12.Nf3 Bb7 13.g3 (13.Rd1 a5=) 13...Rc8 (13...a5 14.Rd1=+) 14.Bg2 Ba6 15.b5 Bb7 16.0-0 Nc5 e4 seems the pivot of the position 17.e5 de5 18.fe5 (worse 18.Qe5 Nd3 19.Qe2 Nb2 20.Qb2 Rc4-+) 18...Nfe4 19.Rad1 Qc7 20.Ne4 Be4 21.Nd2? (21.Bd4!?=) 21...Bg2 (21...Bd3 22.Qe3-/+) 22.Qg2 (22.Kg2 Na4 23.Bd4 Ba3-/+) 22...Rfd8 (22...Nd3 23.Bd4 Bc5 24.Qe4 Bd4 25.Qd4-+) 23.Ba1 (23.Qf3 Bf8=+) 23...Bf8 (23...Nd3 24.Qf3 Bc5 25.Kg2-/+) 24.Rfe1? (better 24.Qe2!?=+) 24…Nd3-+ (24...Nd3 25.Re2 Ba3-+) 0-1. CronusCR (2200) - Jungkook (2225), Daily HyperBullet Arena, lichess.org, 2017. (=1.d4 d6 2.b4 Nf6)

3.c4 Bf5 4.Nf3=.

3.c4 g6 4.d5 (4.Nf3 Bg7=) 4...Bg7 (better 4...Nd5 5.Bb2 Nf6-/+) 5.e4?? (better 5.Bb2=+) 5...Ne4 (better 5...Nfd7!? 6.Bd2 Ba1 7.Nc3-+) 6.Bd3 Nf6?? (better 6...Nf2 7.Kf2 Ba1-+) 7.Nf3?? (7.Bb2 0-0-/+) 7...0-0 (better 7...Nfd7!? 8.Bg6 hg6 9.Nd4-+) 8.0-0?? (8.Bb2 e6-/+) 8...Bg4 (better 8...Nfd7 9.Nc3 Bc3-+) 9.Bb2=+ e5 10.de6 (10.h3 Bh3 11.gh3 e4=+) 10...fe6-/+ 11.Be2 e5 12.Ng5 Bf5 13.Qd5?? (better 13.c5 Qe7 14.f4 ef4 15.Bc4 Kh8 16.cd6 cd6 17.Re1-+) 13…Nd5-+ (13...Nd5 14.cd5 Qg5-+) 0-1. anonym1337 – Checan, lichess.org, 2020.

3.Nd2 g6 4.e4 Bg7 5.Ngf3 Bg4 (5...0-0 6.c3=+) 6.c3 Nbd7 (6...0-0 7.Bd3=) 7.Be2 (7.h3 Bf3 8.Qf3 0-0=) 7...0-0 8.0-0 b6 (8...Nb6!?=) 9.a4 c5 10.bc5 (10.h3 Bf3 11.Bf3 Rc8+=) 10...bc5 (worse 10...dc5 11.h3 Bf3 12.Bf3 (worse 12.gf3 cd4 13.cd4 e5=+) 12...cd4 13.cd4+/-) 11.d5 (11.h3 Bf3 12.Bf3 Qc7=) 11...Bf3 12.Bf3 (worse 12.gf3 Nh5=+) 12...Ne5 (12...Qa5 13.Qc2 Qa6 14.Nb1=) 13.Qc2 Nfd7 (13...Nf3 14.Nf3 Rb8 15.Bd2=) 14.Be2+= Rb8?? (14...c4 15.Rb1+=) 15.Ba3?? (15.f4 Bh6+-) 15...Qc7?? (better 15...c4+=) 16.f4+- Nc6 (16...c4 17.fe5 Ne5 18.Rfb1+-) 17.dc6 Qc6 18.Bf3 (18.Bb5 Qc7+-) 18...e6 (18...Qa6 19.Ra2+-) 19.e5 d5 (19...Qa6 20.ed6 Qd6 21.g3+-) 20.c4 Nb6 (20...g5 21.cd5 ed5 22.Rad1 gf4 23.Nc4+-) 21.a5 Nc4 (21...Qa4 22.Qa4 Na4 23.cd5 ed5 24.Bd1+-) 22.Nc4 1-0. Amun (1715) - Hurzzz (1705), lichess.org, 2019.

3.d5 e5 4.de6 (4.Nc3!?=) 4...Be6=+ 5.e4 (5.Nf3 d5 6.a3 a5=+) 5...Be7 (5...Ne4 6.Nf3-+) 6.c3 (6.Bd3 d5 7.e5 Nfd7=+ (worse 7...Bb4 8.c3+/-)) 6...a6 (6...Ne4 7.Qd3 d5 8.Qb5 Nd7 9.Qb7-/+) 7.e5 (7.Bd3 a5 8.b5 Nbd7=+) 7...Nfd7 (7...de5!? 8.Qd8 Bd8-/+) 8.ed6=+ Bd6 9.Nf3 0-0 10.Bd3 f5 (10...Bg4 11.0-0=+) 11.0-0 Ne5 12.Ne5 Be5 13.Ba3 (13.Qe2 Qd6=) 13...Rf7 14.f4 (14.Qe2 Qf6=+) 14...Bf6 (14...Bc3!? 15.Nc3 Qd4 16.Kh1 Qc3-/+) 15.Qf3 Nc6 16.Qh5?? (better 16.Re1 Bd5 17.Qf1=+) 16…Qd3-+ (16...Qd3 17.Qf3 Rd7 18.Qd3 Rd3-+) 0-1. anonym1337 – svisk, lichess.org, 2020.

3.d5 e6 4.Nc3=+.

3.Nf3 a6 4.Bb2 (4.c4 Bf5=) 4...e6 (4...Bf5 5.e3=) 5.c4 (5.a3 a5=) 5...Nbd7 (5...d5 6.c5=) 6.Nbd2 b6 (6...d5 7.a3=) 7.e3 Bb7 8.Bd3 Be7 (8...c5 9.a3+=) 9.0-0= Rc8 (9...0-0 10.Qc2=) 10.Qb1 (10.Qa4 0-0+=) 10...Nf8 (10...c5 11.a3=) 11.a3 Ng6 12.h3 (12.Rd1 0-0+=) 12...Nh5 (12...0-0 13.Rd1+=) 13.g4 (13.Qc2 0-0+=) 13...Nf6= 14.Nh2 (14.Qc2 0-0=) 14...Nh4 (14...0-0 15.f4=) 15.f4 (15.d5=) 15...g6 (better is 15...Bg2=+) 16.Qe1 Nd7 17.d5 (17.g5 Nf5 18.d5 0-0+=) 17...Rg8 (17...Bf6 18.Bf6 Qf6 19.g5=) 18.e4 (18.g5 Bg5 19.fg5 Qg5 20.Ng4+/–) 18...c6 (18...h6+=) 19.Qf2?? (19.g5 Bg5 20.fg5 Qg5 21.Ng4 e5+–) 19...h6?? (19...cd5 20.ed5 ed5 21.cd5 Bd5 22.Ba6 Rc2+/–) 20.g5!+– hg5 21.fg5 Nf5 22.de6 Ne5? 23.ef7 Nf7 24.ef5 Bg5 25.fg6 Ne5 26.Be5 Qe7 27.Qf7 Kd7 28.Bf5 Kc7 29.Bd6! Kd6 30.Ne4 Kc7 31.Ng5 Rce8 32.Rae1 (32...Qf7 33.Nf7+–) 1–0. Baeumcher,Karl – Siebel,Willi, Bahn–chN Borkum, 1996.

3.Nf3 e6 4.c4 Be7 5.e3 Nbd7 6.Nc3 0-0 7.Be2 c6 8.0-0 d5 9.c5 b6 10.a4 bc5 11.bc5 a5 12.Qc2 Ba6 13.Ba6 Ra6 14.Bb2 Ra8 15.e4 Ne4 16.Ne4 de4 17.Qe4 Nf6 18.Qc6+/– Nd5 19.Ne5 Rc8 20.Qb5 Bf6 21.Nc6 Qd7? 22.Na5+– Qc7 23.Nb3 Rb8 24.Qc4 Rb4 25.Qc2 Rfb8 26.Ra3 Nb6?? 27.a5 Nc4+= 28.Bc3?? Na3-+ 29.Qd1 Rb3 30.Bd2 Nc4 31.Be3 Ne3 32.fe3 Qa5 33.Qg4 Qd2 34.Rf6 Rb1 (34...Rb1 35.Qd1 Rd1 36.Rf1 Rf1 37.Kf1 Rb1#; 34...Qe3 35.Kh1 Qe1 36.Rf1 Qf1) 0–1. Baron wd von Blanc,heart pirate – navajobob, ChessWorld.net, 2011.

4.Nd2 e5=.

4.Nf3 a5 5.e3 Ne4 (5...ab4!? 6.cb4 e5=+) 6.Bd3= d5 7.Be4 (7.b5!?=) 7...de4=+ 8.Ng5 h6 (8...Bf5!? 9.Nd2 ab4 10.Nge4 Nc6=+) 9.Ne4= ab4 10.cb4 Bc6 11.Nc5 (11.Nbc3 e6=) 11...Bg2 (11...b6 12.Nd3 Bg2 13.Rg1=+) 12.Qg4?? (better 12.Rg1 Bc6 13.b5 Bb5 14.Nb7=) 12…Bh1-+ 0-1. anonym1337 - lichess AI level 3, lichess.org, 2020.

4.Nf3 g6 5.a4 Bg7 6.Ba3 e6 7.e3 Nc6 (7...Bc6 8.b5 Be4 9.Be2=) 8.Nbd2 a6 9.Qb3 0-0 10.b5 ab5 11.Bb5 (11.ab5 Ne7+=) 11...Na5 12.Qb2 Bb5 13.ab5 Nd5 14.c4 Nb6 15.0-0 (better 15.Qc3!? c5 16.bc6 bc6 17.0-0+=) 15...Nac4=+ 16.Nc4 Nc4 17.Qb4 d5 18.Nd2 Na3 19.Ra3 Ra3 20.Qa3 f5 21.Nf3 Bf6 22.Rc1 Qe7?? (better 22...Qd7!?=+) 23.Qa7 (better 23.Qe7!? Be7 24.Rc7+-) 23...Qb4 (23...c6 24.bc6 bc6 25.Qa6=) 24.Qb7+= Bd8 (24...Qb2 25.Qc6 Rf7 26.Rd1+=) 25.Ne5 Qd2? (25...f4!? 26.ef4 Qd4+/-) 26.Rf1 (26.Qc6 f4 27.Qe6 Kg7 28.Qd7 Kh8 29.Rf1 fe3 A) 30.Qd5 e2 (30...ef2?! 31.Kh1=) 31.Nf3 ef1R 32.Kf1 Qd1 33.Ne1 Re8 34.Qe5 Re5 35.de5 Be7 36.g3 Bc5 37.h3 Qd2 38.Nd3 Qd3 39.Kg2 Qc2 40.h4 Qf2 41.Kh3 Qf1 42.Kh2 Bg1 43.Kh1 Qf2 44.b6 Qh2; B) 30.Nf3 ef2 31.Rf2 Qc1 32.Rf1=) 26...Qc3? (26...f4 27.Qc6 fe3 28.Qe6 Kg7 A) 29.Qd5?? e2 (29...ef2?! 30.Kh1-/+) 30.Qd7 Kh8-+; B) 29.Qd7 Kh8 B1) 30.Qd5?? e2 (30...ef2?! 31.Kh1=) 31.Nf3 ef1R 32.Kf1 Qd1 33.Ne1 Re8 34.Qe5 Re5 35.de5 Be7-+; B2) 30.Nf3 ef2 31.Rf2 Qc1 32.Rf1=) 27.Nc6 (27.Qc8!? Bf6 28.Qe6 Kg7 29.Qd5 Be5 30.Qe5 Kh6+-) 27...Bh4 (27...f4!? 28.ef4 Qc4+-) 28.g3 Bg5 29.h4 (29.Qc7 Qb3+-) 29...Bf6? (29...Be3 30.fe3 Qe3 31.Kg2 f4 32.gf4 Qe2 33.Rf2 Qe4 34.Kh2 Qe3=) 30.Qc7+- Qd2? (30...Qb3+-) 31.b6 Qb2 (31...f4 32.ef4 (worse 32.Qf4 Qb2+-) 32...Bd4 33.b7+-) 32.b7 1-0. Aleks (1630) - khilji88, lichess.org, 2020. (=1.d4 Nf6 2.b4 d6)

4.h3 Bb5 5.a4 (5.Nf3 d5=) 5...Bc4 (5...Bc6 6.Nf3=) 6.Na3 (6.Nd2 Bd5+=) 6...Be6= 7.Nf3 Bd7 (7...Bf5 8.e3=) 8.Qc2 (8.e3 c6=) 8...e6 (8...d5 9.Bf4=) 9.e3 (9.e4 c5 10.dc5 dc5+=) 9...Be7 (9...Bc6 10.Bd3=) 10.Bd3+= Nc6 (10...d5 11.0-0+=) 11.Nc4 (11.e4 h6+=) 11...d5 (better is 11...a6+=) 12.0-0?? (better is 12.Nce5+=) 12...dc4-+ 13.Bc4 a6 (13...0-0 14.e4-/+) 14.Bd2 (14.e4 0-0-/+) 14...Bd6 (14...Na7 15.e4-+) 15.b5 (15.e4 Be7-/+) 15...ab5 (15...Na5 16.Bd3-+) 16.ab5 Ne7?? (better is 16...Na5 17.Bd3 c5-/+) 17.e4+= Ra1 (17...0-0 18.e5+=) 18.Ra1+/– 0-0 (18...c6 19.e5+/–) 19.e5 Nfd5 (19...Ned5 20.Bd3+/–) 20.Bd3 Be5 (20...Ng6 21.ed6 cd6 22.c4+/–) 21.Ne5 (21.de5 f5+–) 21...Nf6 (21...h6+–) 22.Nd7 (22.Bg5!?+–) 22...Qd7+/– 23.Bg5 (23.Ra7 Nc8 24.Rb7 Nd6+/–) 23...Ned5 24.Qd2 (24.c4 Nb4 25.Qd2 Nd3 26.Bf6 gf6 27.Qd3 Rd8+/–) 24...Rc8 (24...h6!? 25.Bh4 Nh5+/–) 25.c4 Nb6 26.Bf6 (26.Qf4 Ne8 27.Qe4 f5+/–) 26...gf6 27.Qc3 (27.Ra3 Kg7 28.Qf4 f5+/–) 27...Rd8 (27...c5 28.d5 ed5 29.Qc2+/–) 28.c5 (better is 28.d5 f5 29.Qf6+/–) 28...Qd4? (better is 28...Nd5 29.Qd2 Kg7+/–) 29.Qd4+– Rd4 30.cb6 Rd3?? (30...cb6 31.Be2 Rd7+–) 31.bc7 Rc3 32.Ra8 Kg7 33.c8Q (33.c8Q Rc8 34.Rc8+–) 1–0. mpopp – workchess, net–chess.com, 2017.

4.h3 e5 5.Bg5+=.

4.Qb3 e5 5.Nf3=+.

4.Qb3 g6 5.Nd2= Bg7 6.a4 0-0 7.e3 e5 8.de5 Ne5 9.Ngf3 Be6 10.c4 Nf3 11.Nf3 Ne4 (better 11...a5=+) 12.Nd4?? (12.Bb2!?=) 12...Qf6 (better 12...c5!? 13.Bd3 cd4 14.Be4 de3-+) 13.Ra2=+ c5 14.bc5 Nc5 (14...dc5 15.Nf3=+) 15.Qd1=+ Bd7 16.Nb5 Bb5 17.ab5 Qc3 18.Bd2 Nd3 19.Bd3 Qd3 20.Rc2 (20.Qc2!? Qc2 21.Rc2=) 20...Rac8 21.f3 (21.Ba5 Qe4 22.0-0 Rc4 23.Rc4 Qc4-/+) 21...d5 (21...Rc4 22.Ra2-+) 22.Kf2 (better 22.Bb4!? dc4 23.Bf8 Qe3 24.Qe2 Qe2 25.Ke2 Kf8 26.Rd1=+) 22...dc4 23.Re1 (better 23.Bb4!? Rfe8 24.Qd3 cd3 25.Rc8 Rc8 26.Rd1 Rc2 27.Kf1-/+) 23...c3 24.Bc1 Qb5 25.Qe2 Qb3 26.Ba3 (26.Kg1 b5 27.Ra2 b4 28.Ra7 Qe6-+) 26...Rfd8 (better 26...Qa3 27.Qb5 Qd6-+) 27.Rec1 (27.Ra1-+) 27…Qa3 0-1. Aleks - Riadmaxm (1705), lichess.org, 2020. (=1.d4 Nf6 2.b4 d6)

4.Nf3 e5 5.de5 de5 6.e4 Be7 (6...Ne4 7.Bd3 Nef6 8.0-0=+) 7.Bd3 0-0 8.0-0 c6 9.Nbd2 b6 10.Nc4 Bb7 (10...Qc7 11.Ne3=) 11.Nce5 Ne5 12.Ne5 Qc7 (12...c5 13.bc5 Bc5 14.Bg5+=) 13.Nf3 (13.Nc4 c5 14.e5 Nd5 15.bc5 Bc5+=) 13...Rad8 (13...c5 14.Qe2=) 14.Bg5 (14.Qc2!? h6 15.Rb1+/-) 14...h6 15.Bf6 Bf6 16.Qc2 Rfe8 17.e5 (17.Rfe1 c5 18.b5 c4+=) 17...Be5 18.Ne5 Re5 19.h3 (19.Rfe1 c5=) 19...Rde8=+ 20.Bh7 Kf8 21.Bd3 c5 22.bc5 Qc5 23.c4 (23.Rfd1 Bg2 24.Kg2 Rg5 25.Kf3 Qc8-+) 23...Qc6 (23...Rg5!? 24.g4 h5-/+) 24.Rfe1?? (better 24.f3=+) 24…Qg2 0-1. anonym1337 – ImmerRuhig, <1500 SuperBlitz Arena, lichess.org, 2020.

4.f4 e5 5.fe5 de5 6.de5 Ne4 (better 6...Ne5 7.Qd8 Kd8=+) 7.e3 (better 7.Nf3=) 7...Qh4-/+ (7...Ne5?! 8.Qd4 Qd4 9.ed4= (9.cd4? Bb4 10.Bd2 Nd2 11.Nd2 Ng4-+)) 8.g3 Ng3! 9.Nf3 (9.hg3 Qg3 Double attack (9...Qh1 Pinning; 9...Qh1 Deflection; 9...Qg5 Decoy)) 9...Qh5 10.Be2?? (better 10.e6 fe6 11.Rg1 Nf1 12.Rf1-+) 10...Nh1 11.Nd4 (11.Kf1 Qg6-+) 11...Qh4 12.Kd2 Ne5 (better 12...Qh2 13.e6 fe6 14.Ne6-+) 13.Kc2 (13.Qh1 Qf2 14.Kd1-+) 13...Nf2 (13...Qh2 14.Nd2-+) 14.Nf5 (14.Qg1-+) 14…Bf5 (14...Bf5 15.e4 Qe4 16.Kb3 Nd1 17.Na3 Nc3 18.Bc4 Nc4 19.Rb1 Ne3 20.Kb2 Qb4 21.Ka1 Nc2 22.Nc2 Qb1) 0-1. anonym1337 - Mahmud1078 (1775), <2000 Blitz Arena, lichess.org, 2020.

4.e4 Bg7 5.Bc4 0-0 6.Nf3 c6 7.h3 (7.a3 a5 8.Be3 b5=) 7...Qc7 (7...b5 8.Bd3=+) 8.Bf4 Nh5 9.Bh2 (9.Bd2 b5 10.Bd3 a5 11.ba5 Ra5=) 9...e5 10.de5 de5 11.0-0 Nf4 12.Bf4 (12.Qb1 b5 13.Bd3 a5=) 12...ef4=+ 13.e5 (13.Qd2 Rd8 14.Qe1 b5-/+) 13...Be5 (13...Nd7!?-/+) 14.Ne5= Qe5 15.Qd3 (15.Qd2 f3=+) 15...Bf5-/+ 16.Qd2 b5 17.Bb3 f3 (17...Qf6 18.Rfd1=+) 18.Rfe1 Qf6 19.g4 Bc8 (19...Be6!? 20.Qe3 Bb3 21.cb3 Qh4 22.Qf3 f5=) 20.Ne4+= Threatening mate: Nxf6 20...Qh4 (better 20...Qb2+=) 21.Kh2?? (better 21.Qc3 Nd7 22.Qf3+/-) 21...Bg4-/+ Do you see the mate threat? 22.Rh1?? (better 22.Ng5 Nd7 23.Rg1-+) 22...Qh3 23.Kg1 Qg2 0-1. pillsbury (2235) - michelleke (2505), net-chess.com, 2022.

4.e4 Bg7 5.h3 0-0 6.Nf3 Nbd7 7.Bb2 e5 8.d5 a5 9.b5 Nc5 10.Bd3 b6 11.0-0 Nh5 12.a4 Nf4 13.Bc4 Kh8 (13...f5 14.Re1+=) 14.Re1 f5 15.ef5 gf5 (15...e4 16.Nd2 Bf5 17.Nf1-/+) 16.Qd2 Bh6 17.Qd1 (17.Kh1 Qf6 18.Qd1 Ne4 19.Ne4 fe4 20.Re4 Bh3-/+) 17...Bg7 (better is 17...Rg8!? 18.g3 Nh3 19.Kg2 f4-+) 18.Ne2= Ne2 19.Qe2 Rf6 20.Red1 Ne4 21.Nd2 Nd2 22.Qd2 black timed out 1–0. pillsbury (2055) – prmaciel, net–chess.com, 2014.

4.Bb2 e5 5.e4 Be7 6.de5? (better 6.Nc3!?=+) 6...de5-+ (6...Ne4?! 7.Qc2 f5 8.f3=+) 7.f4? (better 7.Qc2!? Bb4 8.Bc3-+) 7...c6 8.fe5 Ne5?? (8...Bb4 9.Nc3 Ne4 10.Qd4-+) 9.Nf3?? (better 9.Qd8 Kd8 10.Be5 Bb4 11.Bc3+-) 9...Qd1 (better 9...Bb4!? 10.Bc3 Qb6 11.Bb4 Qb4 12.Qd2-+) 10.Kd1 Nf3 11.gf3 0-0 12.Bh3?? (better 12.Bc3=+) 12...Bh3-+ 13.Rg1 Rad8 14.Ke2 (14.Kc2 Be6-+) 14...Nh5 15.Kf2 (15.a3-+) 15...Nf4 (15...Rd3 16.Bc1 Bf6 17.Rg5 Ba1 18.Rh5-+) 16.Rg3 (better 16.Rg7 Kh8 17.Rf7 Bf6 18.Bf6 (worse 18.Rf6 Nd3 19.Kg3 Nb2 20.Rf8 Rf8-/+) 18...Kg8 19.Rg7 Kh8 20.Bc3+-) 16...Bh4 (better 16...Nd3 17.Kg1 Nb2 18.Rh3 Rd1 19.Kf2 Rfd8-+) 17.Nc3 (17.Ke3 g5 18.Be5 Rd3 19.Kf2 Bg3 20.hg3 Ng6-+) 17...Rd2 (better 17...Nd3 18.Ke2 Bg3 19.hg3 Nb2 20.c5-+) 18.Ke3 Bg3 (better 18...Rb2!? 19.Kf4 Be6 20.b5-+) 19.Kd2 Bh2 20.Ke3 (20.Rh1 Rd8 21.Kc2 Bg3-+) 20...Ng2 (better 20...Rd8!? 21.Rd1 Rd1 22.Nd1-+) 21.Kf2 Nf4 22.Rh1?? (22.Ke3 Rd8 23.Rd1 Rd1 24.Nd1-+) 22...Nd3-+ 23.Ke3 Nb2 24.Rh2 Nc4 25.Kd4 Be6 26.f4 (26.Na4 Rd8 27.Kc3 b6-+) 26...Rd8 27.Kc5 b6 (27...Rd3!? 28.f5 Ne5 29.b5 b6 30.Kb4 c5 31.Ka3 Rc3 32.Kb2-+) 28.Kc6 Rc8 29.Kb7 Nd6 30.Ka6 (30.Ka7 Rc3 31.Kb6 Ne4 32.b5-+) 30...Nc4 (30...Rc7 31.Rh7 Bc8) 31.Kb5 (31.Kb5 Na3 32.Ka4 Rc3 33.Rb2 b5 34.Ka5 Nc4 35.Kb5 Nb2 36.Ka6-+). yktforu (2010) - Maartenols (2015), Rated Bullet game, lichess.org, 2015. (=1.d4 A41: 1 d4 d6: Tartakower System and Modern Defence 1...d6 2.b4)

4.Nc3 e5 5.d5 Be7 6.e4 c6 7.Bd3 a5 8.b5 Nc5 9.Bc2 Qc7 10.Bd2 h6 11.Nge2 g5 12.Be3 Bg4 13.Bc5 dc5 14.f3 Bd7 15.a4 (15.bc6 bc6 16.Rb1 Rd8+=) 15...cd5= 16.Nd5 Nd5 17.ed5 f5 18.Ng3 Rf8 19.0-0 Bd6 20.f4 (20.Qb1 Qc8+=) 20...0-0-0 21.fe5 (21.fg5!? f4 22.Ne4 hg5 23.Ng5+=) 21...Be5=+ 22.Ra3 f5 seems the pivot of the position 22...f4 23.Ne4 Bf5 24.Qh5 Qg7 25.b6 (25.Re1 Bd4 26.Kh1 Be3=+) 25...Bd4 26.Kh1 Rde8?? (better 26...Kb8 27.Bd3 Be3=+) 27.Nd6+- Kd7 28.Nf5 (better 28.Ne8!? Re8 29.Bf5 Kd8+-) 28...Qe5 (28...Qf6 29.Nh6 (worse 29.Qh6 Qh6 30.Nh6 Rf6+-) 29...Kc8 30.Bg6+-) 29.Qh6 (better 29.Nh6!? Kc8+-) 29...Rf5 (29...Rh8 30.Qg6 f3 31.Qf7 Kc8+-) 30.Qh7 (30.Qh7 Kc8 31.Qf5 Kd8 32.Rh3+-) 1-0. Minister007 (2340) - Agilemaster (2340), Rated blitz game, lichess.org, 2020.

4.b5 Bg7 5.Nd2 0-0 6.Bb2 c6 7.a4 c5 8.Ngf3 cd4 9.Nd4 a6 10.Bd3 Bd7 11.0-0 Qb6 (11...Qc7 12.e4=) 12.c4 ab5 13.ab5 Ra1 14.Qa1 Qc7 15.Rc1 b6 16.h3 Qb7 17.Nf1 (17.Nc2 Rc8+=) 17...e5= 18.Ne2 Be6 19.Nd2 Nbd7 20.Nc3 Nc5 21.Nce4?? (better 21.Qb1=) 21...Nd3-+ 22.Nd6 (22.Nf6 Bf6 23.Rc2 Bh4-+) 22...Qc7 23.Be5 (23.Ba3 Nc1 24.Qc1 Ra8-+) 23...Ne5 24.Qe5 Qc5 (24...Ne8 25.Qf4 Nd6 26.Nf3-+) 25.Qg3?? (better 25.Qc5 bc5 26.Rd1=+) 25...Nh5-+ 26.Qh2 (26.Qf3 Qd6 27.Qe2 Rd8-+) 26...Be5 27.N2e4 0-1. Div_tvoj_rot (1930) - cucosant2 (1820), Casual Blitz game, lichess.org, 2021. (=1.d4 d6 2.b4 Nf6)

4.c4 Bg7 5.a3 a5 6.b5 c6 7.Bb2 0-0 8.f4 Bd7 9.Nf3 cb5 10.cb5 Qb6 11.a4 Re8 12.Nc3 Bg4 13.Be2 Nbd7 14.0-0 Rac8 15.Qd2 e5 16.fe5 de5 17.d5 (17.de5 Ne5 18.Ne5 Re5=+) 17...e4 (17...Rc3!? 18.Qc3 Nd5-/+) 18.Nd4= Ne5 19.Ne4?? (better 19.Rab1=+) 19...Ne4-+ 20.Qd1 Be2 21.Qe2 Nc4 22.Rab1 (22.Rad1-+) 22…Ned2 (22...Ned2 23.Rbc1 Bd4 24.Bd4 Qd4 25.ed4 Re2-+) 0-1. Minister007 (2325) - Blitzer14 (2300), Rated blitz game, lichess.org, 2020.

4.Nf3 Bg7=.

4.e3=.

4.e3 Nbd7 5.Bb2 e5 6.Be2 e4 7.Nfd2 Be2 8.Qe2 d5 9.b5 a6 10.0-0 (10.c4 ab5 11.cd5 b4+=) 10...ab5 11.Qb5 Bd6 12.f3 ef3 13.Rf3 0-0 14.Qd3 c6 15.c4 dc4 16.Nc4 Bh2 17.Kh2= Ng4 18.Kg3 Nde5= 19.Ne5 Ne5 20.Qf5 Nf3 21.gf3 Ra5 22.Qh3 g6 23.f4 Re8 24.Kf2+= Rh5 25.Qg3 Qd7 26.Bc1 c5 27.dc5 Qd1 28.Qg1-/+ Qd3 29.Bd2? Rh3-+ 30.Kg2 Ree3 31.Be3 Re3 (31...Re3 32.Qe3 Qe3-+) 0–1. Mrozinski,W – Hirsch,S, Ruhrgebiet, 1996.

4.e3 Nbd7 5.Be2 e5 6.0-0=.

4.e3 Nbd7 5.Be2 e5 6.de5 de5+= 7.a3 a5 8.b5 Bd6 9.Bb2 Qe7 10.Nbd2 Nb6 11.c4 Nbd7 12.0-0 0-0 13.Ne1 Bf5 14.f3 Bc5-/+ 15.Qb3 Rfd8 16.Kh1 a4 17.Qc3+= Bb6 18.e4 Be6 19.Nd3 Nc5 20.Rfd1?? Nd3-+ 21.Bd3 Bd4 22.Qc2 Bb2 23.Qb2 Rd3 24.Qe5 Rad8 25.Qb2 Bc4 26.Qc2 Bb5 0–1. Giralt Toro,Julio – Garcia Castro,P (2305), VIII Open Salou ESP, 2006.

4.e3 Nbd7 5.Be2 g6 6.a4 (6.0-0 e5=) 6...Bg7 (6...e5 7.0-0=) 7.h3 Bf3 (7...Bf5 8.g4 Be6 9.c4=) 8.Bf3 0-0 (8...d5 9.c4 e5 10.0-0=) 9.Bb7+= Rb8 10.Qf3 c5 (10...d5 11.Bd5 Ne5 12.de5 Nd5 13.b5 Be5 14.Ra3+/–) 11.bc5 dc5 12.c3 e5 13.0-0 Qb6 14.Bc6 cd4 15.a5 Qa6 16.ed4 Rfc8 17.d5 Nc5 18.Be3 Nb3 19.Ra2 e4 20.Qf4 Qc4 21.Ra4 Qa6 22.c4 Rd8? 23.Qc7 Bf8 24.Qa7 Qc8 25.Bb6 Rd6 26.Nc3 Nd7 27.Ne4 Rc6 28.dc6 Qc6 29.Nc3 Nbc5 30.Raa1 Bg7 31.Nd5 Kf8 32.Bc5 Qc5 33.Qd7 Ba1 34.Ra1 Rb2 35.Qd8 Kg7 36.Qf6 (36.Qf6 Kh6 37.Ne7+–) 1–0. Kivimaeki,J – Natri,A, Finland, 1993.

4.e3 Nbd7 5.h3 Bh5=.

4.h3 Bf3 5.ef3 e6 6.c3 Nbd7 7.Qa4 Be7 8.Bd3 c5 9.0-0 cd4 10.cd4 d5 11.Bg5 h6 12.Bh4 Qb6 13.b5 Rc8 14.Re1 Bd6 15.a3 Nh5 16.Kh1 g5 17.Bg3 Ng3 18.fg3 Bg3 19.Rf1 0-0 20.Ra2 Nf6 21.Qb4 Nh5 22.Rd1 Bd6 23.Qa4 Rfe8 24.Nd2 Nf4 25.Bf1 Rc7 26.Re1 Rec8 27.Nb3 Rc3 28.Rd2 Kg7 29.Kg1 h5 30.Kh1 g4 31.fg4 hg4 32.h4 Rh8 33.g3 Rg3 34.Rh2 Rf3 35.Nc5 g3 36.Nd7 Qd8 37.Ne5 Rf2 38.Ng4 Rh2 39.Nh2 g2 40.Kg1 Qh4 41.Nf3 Nh3 42.Kg2 Qg4 43.Kh1 Nf2 0–1. COMP – mtra, internet, 2002.

3.a3 b5 4.Nc3 (4.e4 Ne4 5.Bb5 Bb7=) 4...a5+= 5.ba5 c5 (5...c6 6.e4 Qa5 7.Bd2=) 6.Bd2 cd4 (6...Ra5 7.dc5 Bc5 8.e4+=) 7.Nb5 Nc6 8.Nf3 Ne4 9.Rb1 (9.Nbd4 Nd4 10.Nd4 Ra5=) 9...Bc5 (9...e5 10.e3 de3 11.fe3 Nd2 12.Qd2 Ra5 13.Qd5 Ba3 14.Ne5 Qh4 15.g3 Bb4 16.Kf2 Qf6 17.Nf3+=) 10.Bb4 Nb4 11.ab4 Bb4 12.Rb4 Qa5 13.Nd2 (13.Nd6! Nd6 14.Qd4+=) 13...Qb4-/+ 14.Nc7 Ke7 15.Na8 Bb7 16.Nc7 Rc8 17.e3 (17.Na6 Ba6 18.f3 Nd2 19.Qd2 Qb1 20.Qd1 Qb2-+) 17...Rc7 18.Bd3 0-1. Fritz 11 - nn, 2011.

3.a3 d6 4.Nf3 Be7 5.e3 0-0 6.c4 Nfd7 (6...c5 7.Bd3=) 7.Bb2 Re8 8.Be2 Nf8 9.0-0 Nbd7 10.Nc3 b6 11.e4 Bb7 12.Qc2 c6 13.Bd3 Qc7 14.h3 Rac8 15.Rfe1 Qb8 16.Rad1 Qa8 17.Nd2 (17.Re2 c5 18.dc5 bc5+=) 17...Red8 18.Bf1 Re8 19.Nf3 Rcd8 20.Na4 White prepares the advance c5 20...Ng6 21.e5 (21.c5 d5+=) 21...Rc8 (21...de5!? 22.Ne5 Nde5 23.de5 c5 24.bc5 Nh4=) 22.ed6 Bd6 23.c5 Bf8 (23...Bc7 24.Bd3+=) 24.Nc3 (24.cb6 ab6 25.Ne5 c5 26.Nd7 cb4+/-) 24...a5 25.Ra1 (25.Na4 b5 26.Nc3 Be7+=) 25...Ba6= 26.Ne4 Bf1 27.Rf1 bc5 28.dc5 Rcd8 29.Nd4 Be7 30.Bc3 (30.Nd6 Bd6 31.cd6 Nb8+=) 30...Nf6 (30...Nf4 31.Rfd1=) 31.Nd2 (31.Nb3!? Ne4 32.Qe4 ab4 33.ab4+= (worse 33.Qb4 Rd5=+)) 31...Nd5= 32.Nc4 ab4 (32...Nc3 33.Qc3 Nf4 34.Rae1= (34.Na5? Rd4 35.Qf3 Nd5-+)) 33.ab4= Qb7? (better 33...Qc8!? 34.Rfd1 Qc7=) 34.Na5+/- Qd7 35.Ndc6 Rc8 36.Ne7 Qe7 37.Bd2 Ne5 (37...Rc7 38.Qe4+/-) 38.Qe4 Qf6 39.Rfe1 Ng6 40.Rac1 Qb2? (40...Rb8 41.Nc6 Rb7 42.Rb1+-) 41.Qc2 (41.Nc4 Qf6 42.Nd6 Qe7+-) 41...Qa3? (better 41...Qf6+-) 42.Ra1 Nb4 43.Qc4 (43.Ra3 Nc2 44.Rc3 Ne1 45.Be1 Nf4-+) 43...Qd3 (43...Na2 44.Rec1 (44.Ra2?! Qc5 45.Qc5 Rc5+-) 44...Ne5 45.Qa2+-) 44.Bb4 Qc4 45.Nc4 f5 (45...Rc7+-) 46.Nd6 f4 (46...Nf4 47.Ne8 Re8 48.Ra7+-) 47.Ne8 Re8 48.Ra6 f3 (48...e5 49.c6 Rc8 50.Rea1+-) 49.Ree6 Rf8 (49...Rc8+-) 50.Rf6! gf6 (50...Rf6 51.Rf6 Combination; 50...gf6 51.gf3 Decoy) 51.c6 Kg7?? (better 51...Rc8+-) 52.Ra7 Rf7 (52...Kg8 53.Bf8 Kf8+-) 53.Bf8 (better 53.Rf7 Kf7 54.c7+-) 53...Kf8 54.Rf7?? (better 54.c7 Kg7 55.c8Q Ra7 56.gf3+-) 54...Kf7-+ 55.c7 Ne7 56.gf3 (56.g4 Ke6-+) 56...Nc8 (56...Ke6 57.Kg2-+) 57.f4 Kg6 (57...Ke6 58.Kg2-+) 58.f5? (better 58.Kg2-+) 58...Kf5 59.f3 (59.Kg2 Kf4-+) 59...Kg6 (better 59...Ke6!? 60.Kf2-+) 60.Kg2 Kf7 (60...Ne7 61.Kg3-+) 61.Kg3 Ke6 62.Kf4? (62.Kg4 Ne7 63.Kh5 Kd7-+) 62...Kd7 (better 62...Nd6!? 63.Kg4 Kd7 64.Kh5-+) 63.Kf5 Ke7 (63...Kc7?! 64.Kf6 Kd6 65.Kg7=) 64.h4? (better 64.Kg4-+) 64...Kf7 (64...Nd6 65.Kg4 Kd7 66.Kh5 Kc7 67.Kg4-+) 65.h5 (65.Kg4 Kg6-+) 65...Ke7 (65...Nd6 66.Kf4-+) 66.h6 (66.Ke4 Ke6-+) 66...Kf7 (66...Nd6!? 67.Kf4-+) 67.Ke4 Ke6 68.Kd4 Nd6 (68...Ne7 69.Kc5-+) 69.f4 (69.Kc5 Kd7 70.Kd5 Nc8-+ (70...Kc7?! 71.Ke6 f5 72.f4-+)) 69...Nc8 (69...Nb5!? 70.Ke3 Nc7 71.Ke4-+) 70.Kc5 Kd7 0-1. Minhntq81 (2450) - zsolti_83 (2565), Rated Bullet game, lichess.org, 2021.

3.a3 g6 4.c4 Bg7 5.e3 0-0 6.Nc3 d5 7.Bb2 c6 8.f4 (8.Nf3 a5+=) 8...Nbd7 9.Nf3 Ne4 (better 9...a5!?=) 10.Ne4+/- de4 11.Nd2 (11.Ng5!?+/-) 11...f5= 12.Qb3 Nf6 13.Be2 Qe7 14.0-0 Rd8 15.h3 Bd7 16.a4 White prepares b5 16...Be8 17.b5 Bf7 18.Ba3 Qc7 19.c5?? White plans b6 (better 19.Rfb1+=) 19...e5-+ 20.Bc4 ed4 21.b6 (21.Bb2 d3-+) 21...ab6 22.cb6 Qd7 23.ed4 (23.Bc5 de3 24.Be3 Nd5-+) 23...Qd4 24.Kh2 Bc4 (better 24...Nd5 25.Rad1 Qc3-+) 25.Qc4? (25.Nc4 Nd5-+) 25...Qc4 (better 25...Nd5!? 26.Qd4 Bd4 27.Rab1-+) 26.Nc4 Nd5 27.Rab1 (27.Bb2 Bb2 28.Nb2 Nb6 29.a5-+) 27...Ra4 28.Rfc1 Nf4 29.Bd6 (29.Rc2 Rd4 30.Bc1 Nd3-+) 29...Rc4! 30.Bf4 (30.Rc4 Rd6 Remove defender) 30...Rc1 31.Rc1 Rd5 32.Rc4 (32.g4 Rb5-+) 32...Rb5 33.Bc7 Be5 34.Be5 Re5 35.Rd4 e3 36.Kg1 (36.Rd1-+) 36…e2 (36...e2 37.Rd8 Kf7-+) 0-1. Minister007 (2355) - Izard (2350), Rated blitz game, lichess.org, 2020.

3.Ba3 d5 4.e3 a5 5.b5 Ba3 6.Na3 Qd6 7.Qc1 e5 8.de5 Qe5 9.c3 Bg4 10.Be2 Be2 11.Ne2 c5 12.c4 Nbd7 13.cd5 0-0 14.0-0 Qd5 15.Rd1 Qe6 16.Nf4 Qf5 17.Nc4 b6 18.a4 g5 19.Nd5 Nd5 20.e4 Nf4 21.ef5 Ne2 22.Kf1 Nc1 23.Rd7 Nb3 24.Rad1 Rab8 25.R1d6 Rfe8 26.Nb6 Re4 27.f6 Rbe8 28.f3 Re1 29.Kf2 Nd4 30.Rd5 R1e2 31.Kg3 Ne6 32.Re7 Rb8 33.Rg5 Ng5 34.Re2 Ne6 35.Nc4 Kh8 36.Kf2 Ra8 37.g3 Kg8 38.h4 Kf8 39.b6 Ke8 40.f4 Kd7 41.Ne5 Kd6 42.Nf7 Kd7 43.Ne5 Kd6 44.b7 Rb8 45.Nc4 Kd7 46.Na5 h6 47.f7 Nf8 48.Re5 c4 49.Nc4 Rb7 50.Re8 Nh7 51.Ne5 Kd6 52.Rh8 Rb2 53.Kf3 Rb3 54.Kg4 h5 55.Kh3 Rc3 56.Rh7 Rc8 57.Nd7 Ke6 58.f8Q Rf8 59.Nf8 Kd6 60.a5 Kc5 61.a6 Kb6 62.a7 Kc6 63.a8Q Kc5 64.Qa4 Kb6 65.Nd7 Kc7 66.Nb8 Kb8 67.Qe8# 1–0. Betsy516 – Queen196, computer chess game, 2001.

3.c3 a6 4.Nf3 Nc6 5.Bg5 Be7 6.e3 d5 7.Bd3 0-0 8.Nbd2 Nd7 9.Be7 Qe7 10.Qb3 Nf6 11.0-0 b5 12.a4 ba4 13.Ra4 Rb8 14.Ba6 Bd7 15.Rfa1 Rb6 16.Be2 Rfb8 17.Ra8 h6 18.Bd3 g6 19.e4 Kg7 20.e5 Ne4 21.Ne4 de4 22.Be4 Nd8 23.Qc4 Bb5 24.Qc5 Qd7 25.Rb8 Rb8 26.c4 Bc6 27.d5 ed5 28.cd5 Rb5 29.dc6 Rc5 30.cd7 Rc4 31.Bd3 Rb4 32.Ra8 Rb3 33.Bf1 Nc6 34.Nd4 Nd4 35.d8Q h5 36.Qh8 1–0. themonkey – R_U_FOREAL, GameColony.com, 2002.

3.c3 Nc6 4.Bg5 Be7 5.Nf3 0-0 6.Qd3 h6 7.Bf6 Bf6 8.Nbd2 Qe7 9.Ne4 a6 10.Nf6 Qf6 11.d5?? (better is 11.e4!?=) 11...ed5 (better is 11...Nb4 12.Qd2 Nd5-+) 12.e4?? (better is 12.Rc1-/+) 12...de4-+ 13.Qe4 Qe6 14.Bd3?? d5 15.Qe2 Re8 16.Nd4?? Nd4 17.Qe6 Re6 18.Kf1 f6 19.cd4-/+ Bd7 20.Bf5 Re7 21.g4 Rae8 22.Bg6 Bg4 23.Be8 Re8 24.Rg1?? Be2 25.Kg2+= b5 26.Rge1 f5 27.Rac1 c6 28.Rc6 g5 29.Rg6 Kh7 30.Ra6 f4 31.f3 Bf3+= 32.Kf2 Be4 33.Rc1 Bd3 34.Rc7 Kh8 35.Rh6 Kg8 36.Rd6 Re2?? 37.Kf3+– Rh2?? 38.Rd8 1–0. Dixon,Grant – Dewulf,Bjorn, RN–2011–0-00385, 2011.

3.c3 Bd6 4.e4 0-0?? (better is 4...Ne4 5.Qg4 Nf6 6.Qg7 Rg8=) 5.e5+– Be5 (5...Be7 6.ef6 Bf6 7.Bd3+–) 6.de5 Ne4? (6...Nd5+–) 7.Qh5 Qg5 (7...h6 8.Nh3 f6+–) 8.Bg5 (8.Bg5 Ng5 9.Qg5+–) 1–0. Janek – Tundja, internet, 2017.

3.c3 Ne4 4.g3 Qf6 5.f3 Nd6 6.e4 h5?? 7.e5+– Qg6 8.ed6 Bd6 9.Bd3 Qf6 10.Nd2 h4 11.Ne4 Qe7 12.Bg5 f6 13.Nd6 cd6 14.Bg6 Kd8 15.Bh4 Rh6 16.Qc2 e5 17.0-0-0 ed4 18.Rd4 Nc6 19.Re4 Ne5 20.f4 Rg6 21.Nf3!! b6 22.fe5 Bb7 23.Rhe1 Be4 24.Qe4 Rh6 25.Qa8 Kc7 26.ef6 Qf7 27.Re7 Qa2 28.Rd7! Kd7 29.Qb7 Ke6 30.Nd4 Ke5 31.Qe7 Kd5 32.Qe6# 1–0. pozarski (2085) – Polonca (1780), GameColony.com, 2002.

3.c3 h6 4.g3 Be7 5.Bh3 0-0 6.Nf3 b6 7.0-0 Bb7 8.Ne5 d6 9.Ng4 Qd7 10.Nf6 Bf6 11.f4 Qc6 12.Bg2?? Qg2 0–1. sgrant (2040) – jearly (2125), net–chess.com, 2011.

3.Nc3 Nc6 4.Ba3? Bd6 5.Nb5 a6 6.Nc3? Ng4 7.g3 Qg5 8.f3?? Ne3 9.Qd3 f5?? 10.f4= Qg4? 11.Qe3+– e5? 12.fe5 f4 13.gf4 Qh4 14.Kd2 Be7 15.f5 Bg5-+ 16.b5?? Be3 17.Ke3 d5 18.Nf3 Qh6 19.Kf2 ab5 20.Nb5?? Ne7 21.Nc7+– Kd8 22.Na8 Nf5 23.c4?? Ne3?? 24.Bg2 Ng4+= 25.Kg1?? Qe3 26.Kf1 Qf2# 0–1. Oakly – mad max, ChessWorld.net, 2002.

3.d5 Bb4 4.c3 Be7 (4...Nd5 5.cb4 Qf6 6.Nc3 Nc3 7.Bb2 Nd1 8.Bf6 Nf2 9.Bg7-+) 5.de6 de6 (5...fe6 6.Nf3-/+) 6.Qd8-/+ Bd8 7.Nd2 0-0 (7...Nbd7 8.Ngf3-/+) 8.Ba3 Re8 9.e4 (9.Ngf3 Nd5-/+) 9...b6 (9...Nfd7 10.Ngf3-/+) 10.Ngf3 (10.e5 Nd5-/+) 10...Bb7 11.Bb5 c6 12.Bc4 (12.Ba4-/+) 12...Be7 (12...Bc7!?-/+) 13.Be7=+ Re7 14.0-0 (14.e5 Nd5 15.Ne4 c5-/+) 14...Ba6 (14...e5 15.Rad1-/+) 15.Rfd1 (15.Rad1 Kf8 16.Ba6 Na6=+) 15...Bc4 (15...e5 16.Rab1-/+) 16.Nc4=+ Na6 17.Nd6 (17.e5 Nd5 18.Rac1 Rd7=+) 17...Rd7 (17...e5 18.Rd2-/+) 18.Ne5=+ Rc7 19.Rd4 Nc5 20.Rad1 Ncd7 21.Ndf7+/– Ne5 22.Ne5 h6 23.f3 c5 24.Rd6 Re7 25.Nc6 Ree8 26.a4 a6 27.c4 Rac8 28.e5 Nh5 29.Rb1 Nf4 30.Rb6 Ne2 31.Kf2 Nc3 32.Ra6 Nb1 33.Ra5 Na3 34.Rc5 Ra8 35.a5 Nc4 36.Rc4 Rec8 37.Ne7 Kf7 38.Nc8 Ra5 39.Rc7 Kg6 40.Re6 Kf5 41.Rce7 Ra2 42.Kg3 (42.Kg3 Ra4 43.Nd6 Kg5 44.Rg7 Kh5 45.Rf7 Rf4 46.Kf4 Kh4 47.Rh6#) 1–0. TESTEr – TESTEr, internet, 2008.

3.e3 Bb4-/+ 4.c3 Be7 5.Nf3 d5 6.Be2 0-0 7.0-0 c5 8.Ba3 Nc6 9.dc5 Ne4 10.Bd3 Nc5 11.Bc5 Bc5 12.Nd4 e5 13.Nc6 bc6 14.e4 de4 15.Be4 Ba6 16.Qd8 Rfd8 17.Bc6 Bf1 18.Kf1 0–1. nandy conure – Double Wood, ChessWorld.net, 2005.

3.f3 d5 4.a3 Bd6 5.h3? (5.e4!? de4 6.fe4=+) 5...Bg3 (5...Nh5!? 6.h4-+) 6.Kd2-/+ c5 7.bc5 Qa5 8.Nc3? e5-+ 9.e3 ed4 10.Bb5 Bd7 11.Bd7 Nbd7 12.ed4 Bf4 13.Kd3 Qa6 14.Nb5 Qb5 15.Kc3 Nc5! 16.Qe2 Nfe4! 17.fe4 Na4 0–1. dhub noire – smoothmovermovesagain, ChessWorld.net, 2006.

3.Nf3 d5 4.a3 (--> 1.b4 e6 2.a3 Nf6 3.Nf3 d5 4.d4).

3.Bg5 h6 4.Bf6 (4.Bd2 Nc6=+) 4...Qf6 5.c3 Nc6 (5...d5 6.e3=+) 6.f3 (6.e4 e5 7.b5 Ne7=) 6...Bd6 (better is 6...d5=+) 7.b5? (7.Nh3 e5 8.b5 Nd8=+) 7...Ne7 (better is 7...Qh4 8.Kd2 Nd4-+) 8.g3=+ Nd5 (better is 8...e5=+) 9.c4?? (9.Qd3 Be7=) 9...Nb6?? (9...Bc5! 10.cd5 Bd4 11.de6 de6 12.Qc2-+) 10.c5? Bc5!-+ 11.e3 Bb4 (11...Bb4 12.Nd2 e5-+) 0–1. bouffant – mgokhale, net–chess.com, 2006.

3.h4? Bb4-/+ 4.Bd2 Be7 0–1. Kompan,Eva – Zupec,Nejc, SLO–DP–PF14 ICCF, 2005. (=1.d4 Nf6 2.b4 e6)

4.Bb2 ab4-/+ 5.ab4 Bb4 6.Nd2 Ra1 7.Ba1 b6 8.e3 (8.c3 Be7-/+) 8...Ne4 9.Ngf3 Bb7 10.Bb2 0–1. blackdogs – rollerblade, net–chess.com, 2018. (=1.d4 Nf6 2.b4 e6 3.a3 a5)

4.b5 a4 5.c4 c6 6.e3 d5 7.Nc3 dc4 8.Bc4 cb5 9.Nb5 Bd7 10.Nf3 Na6 (10...Be7 11.Ne5+=) 11.0-0 (11.Qa4 Be7+/-) 11...Be7 (11...Nc7 12.Nc7 Qc7 13.Ne5+=) 12.Bd2 (12.Qa4 0-0+/-) 12...0-0 13.Qe2 Nc7 14.Rfb1 Nb5 15.Bb5 Bb5 16.Rb5 Qd7 (16...Ra7 17.Qd3+=) 17.Bb4 (17.Ne5!? Qc8 18.Rc1+/-) 17...Bb4+= 18.Rb4 Nd5 19.Qb5 Qb5 20.Rb5 b6 21.Nd2 Ra5 (better 21...Rac8!?=) 22.Ra5+/- ba5 23.Nc4 Rc8 24.Na5 Rc2 25.Nb7 Nc3 26.Nc5 e5 (26...h5 27.g3+=) 27.Kf1 (27.de5!? Kf8 28.Kf1+/-) 27...ed4 28.ed4 Nb5?? (28...Kf8 29.Nd7 Ke7 30.Nb6=) 29.Na4 (better 29.Rb1+-) 29...Nd4+/- 30.Nb6 h6 31.a4 Nb3 32.Ra3 (32.Rd1 Ra2+/-) 32...Nd4 (better 32...Rc1 33.Ke2 Rc3=) 33.f3 Ne6 (33...Rc1 34.Kf2+/-) 34.a5+- Nc5? (better 34...Nc7+-) 35.a6 Na6 36.Ra6 Kh7 37.Nd5 Rd2 38.Ne3 Rb2 39.Ra7 Kg6 40.h4 h5 41.g3 Rd2 42.f4 Rb2 43.f5 Kf6 44.Ra6 Ke5 (44...Ke7+-) 45.Nc4 (45.Nc4 Kf5 46.Nb2+-) 1-0. Minister007 (2360) - boolah229 (2340), Rated blitz game, lichess.org, 2020.

4.b5 a4 5.c4 d5 6.e3 dc4 7.Bc4 Nbd7 8.Nf3 Nb6 9.0-0?? (better 9.Bd3+=) 9...Nc4-+ 10.Nbd2 (10.Qd3 Nd6 11.Nc3 Nd5-+) 10...Nd2 11.Qd2 Be7 (11...Qd5 12.Rb1-+) 12.Bb2 (12.Qc2 Bd7-+) 12...0-0 (12...Bd7 13.b6-+) 13.Rac1 (13.Rfb1 Bd7 14.Bc3 c6-+) 13...Bd7 14.Qc2 (14.b6 cb6 15.Ne5 Bb5-+) 14...Bb5 15.Rfd1 Bc6 16.Ne5 Ra6 (16...Bd5 17.Qc7 Qc7 18.Rc7-+) 17.Qe2 (17.Nc6 Rc6 18.Qa4 Ra6-+) 17...Qd5 (17...Bd5 18.f3-+) 18.f3 Rd8 (18...Bb5 19.Qc2 c6 20.Rb1-+) 19.e4 Qb5 (19...Qa5 20.Bc3 Qb5 21.Qb5 Bb5 22.Rb1-+) 20.Qf2? (20.Qb5 Bb5 21.Rc7 Nd7 22.Rb7 Ne5 23.Re7 Nc4-+) 20...Bd6 (better 20...Nd7 21.Nc6 Rc6 22.Rb1-+) 21.Nc4 (21.Nc6 Rc6 22.e5 Nd5 23.Rc6 Qc6-+) 21...Bf8 (better 21...Bf4-+) 22.Rb1 (22.d5 Bc5 23.Bd4 Bd4 24.Qd4-+) 22...Qc4 23.Rdc1 Qd3 24.Rd1 Qb5 25.Ba1 (25.Qg3 Ne4! 26.fe4 Be4-+) 25...Qa5 (25...Qg5 26.Bb2-+) 26.Rd3 (26.Qg3 Rb6-+) 26...Rb6 27.Rbd1 Rb3 28.Qc2 (28.Bb2 Qb5 29.Rb3 Qb3-+) 28...Rd3 (better 28...Ne4 29.Bb2 Nf6-+) 29.Rd3 (29.Qd3 Qh5-+) 29...Qb5 (29...Qe1) 30.h4 (30.Qd1 Nh5 31.Kh1 Bc5-+) 30...h5 (30...Ne4 31.Bb2-+) 31.Kh2 (31.Rd1 Ba3 32.Rb1 Qa6-+) 31...Ne4! 32.d5 (32.fe4 Be4 Combination) 32...Bd6 33.Kg1 Qc5 34.Qc5 Bc5 35.Bd4 Bd4 36.Rd4 Rd5 37.Re4 Rd1 38.Kf2 Be4 39.fe4 Ra1 40.Kf3 Ra3 41.Kf4 Ra2 (41...Rb3 42.Ke5 a3 43.Kd4 a2 44.Kc4 Rg3 45.e5 a1Q 46.Kb4 Qd4 47.Kb5 Rb3 48.Ka5 Qb4) 42.g4 a3 43.gh5 Ra1 44.h6 a2 45.h7 Kh7 46.h5 Rf1 47.Ke5 (47.Kg3 a1Q 48.e5 Qc3 49.Kg4 Qf3 50.Kh4 Rh1 51.Kg5 Rh5) 47…a1Q 0-1. Antholich (2450) - Banelevich (2515), Rated Bullet game, lichess.org, 2021. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4 e6 3.a3)

4.b5 b6 5.Nd2 Bb7 6.e3 d5 7.Bd3 c5 8.bc6 Bc6 9.Rb1 Nbd7 10.Qe2 Rb8 11.Bb5 Qc7 12.f4 (12.Bd3 Bd6+=) 12...Be7 (12...Bb5 13.Rb5 Qc2 14.Bb2-/+) 13.Ngf3 (13.Bd3 b5+=) 13...0-0 (13...Bb5!? 14.Qb5 Qc2-/+) 14.Ne5 Ne5 15.fe5 Nd7 (15...Bb5!? 16.Qb5 Ne4 17.Ne4 de4+=) 16.0-0 Bg5 17.Nf3 Bh6 18.g4 g6 (18...Bb5!? 19.Rb5 f6 20.ef6 A) worse is 20...Rf6 21.g5 Rf3 22.Qf3+- (22.Rf3?! Bg5 23.Bb2 Nf6+=); B) 20...Nf6?! 21.g5 Ne4 22.gh6=; C) 20...gf6=) 19.g5+= Bg7 20.h4 (20.Ba6 Ra8+=) 20...Rb7 21.h5 Bb5 22.Rb5 Qc4 (better is 22...Qc6=) 23.Qc4+- dc4 24.h6 Bh8 25.Bd2 Ra8 (25...Rc7 26.Bc3+-) 26.Bc3+- Kf8 27.Nd2 Rc7 28.a4 Ke7 29.Ne4 Rc6 30.Bb2 Ke8 (30...Kf8 31.Ba3 Kg8 32.Nd6+-) 31.c3 Rac8 (31...Kf8 32.Nd6 Kg8 33.Nf7+-) 32.d5 R8c7 1-0. Cherdantsev,Vladimir (1960) - Mirgorodskiy,Viktor, Vladivostok op, 2007. (=1.d4 Nf6 2.b4 e6 3.a3 a5)

4.b5 c6 5.Bg5 cb5 6.e4 Be7 7.e5 Nd5 8.Be7 Qe7 9.Bb5 0-0 10.c4 Nc7 11.Nf3 d6 12.0-0 Nc6 13.Bc6 bc6 14.Re1 d5 15.Nbd2 Ba6 16.Qa4 c5 17.Rac1 cd4 18.Nd4 dc4 19.Nc4 Nd5 20.Nd6 Bd3 21.Qd1 Bg6 22.Qg4 f6 23.Qe6 Qe6 24.Ne6 Rfb8 25.Rc5 Ne7 26.ef6 gf6 27.Nc7 1–0. wesolyPolak (1800) – NN, GameColony.com, 2002.

4.b5 d5 5.a4 c6 6.Qd3 Ne4 7.Ba3 Ba3 8.Na3 Qe7 9.Qb3? (better is 9.Rb1!?+=) 9...Qb4 (better is 9...Nf2!? 10.Kf2 Qh4 11.Kf3 e5 12.de5 Qe4 13.Kf2 Qd4 14.e3 Qa1-+) 10.Qb4-/+ ab4 11.Nb1 cb5 12.f3 (12.a5 b6! 13.a6 Ra6 14.Ra6 Na6-/+) 12...Nd6-+ (12...Ra4?! 13.Ra4 ba4 14.fe4+=; 12...ba4?! 13.fe4 de4 14.e3+=) 13.c3 (13.a5 Nc6 14.e3 Ra6-+ (14...Ra5?! 15.Ra5 Na5 16.Bd3-+; 14...Na5?! 15.Nd2-+)) 13...b3 (13...Ra4!? 14.Ra4 ba4 15.cb4-+) 14.e3 ba4 15.Ra3? (15.Nd2 b2 16.Ra2 Nc6-+) 15...Nd7 16.Bd3 (16.Nd2 Nb6-+) 16...Nb6 17.Ne2 (17.Nd2 Bd7 18.Nb3 ab3 19.Rb3 Nbc4-+) 17...Ndc4 18.Bc4 (18.e4 Na3 19.Na3 Ke7-+) 18...Nc4 (18...dc4?! 19.e4-+) 19.Ra1 (19.e4 Na3 20.Na3 Ke7-+) 19...a3 0–1. capacuba (2300) – davidloza (2455), net–chess.com, 2014. (=1.d4 Nf6 2.b4 e6 3.a3 a5)

4.b5 d5 5.e3 Bd6 6.c4 dc4 7.Bc4 0-0 8.Nc3 Nbd7 9.f4 Nb6 10.Be2 Nbd5 11.Bd2 Nc3 12.Bc3 Ne4 13.Qd3 Nc3 (13...Qh4!? 14.g3 Ng3-/+) 14.Qc3= Qh4 15.g3 Qe7 16.Nf3 Bd7 17.Kf2 (17.e4 Qd8+=) 17...Rfc8 18.a4 (18.Ne5 c6 19.Nd7 Qd7=) 18...Be8 (18...c6 19.Qd3=+) 19.Rhc1 c6 20.b6 c5 21.Qb3 Bc6 22.Ne5 Bd5 23.Bc4 cd4 24.ed4 Be5 25.fe5 Qg5 26.Bd5? (better 26.Qd3-/+) 26...Qd2 27.Kf3 ed5 (27...Rc1 28.Rc1 Qc1 29.Be4-+) 28.Rc8? (better 28.Rc7 Qd4 29.Rd1 Qe4 30.Kf2 Qe5 31.Rd5 Qf6 32.Kg2=+) 28...Rc8-+ 29.Qd5? (29.Ra3 Rc2 30.Qd3 Qg2 31.Kg4-+) 29...Rc3 30.Kg4 h5 (30...Qe2 31.Kf4 Qf2 32.Kg5 h6 33.Kg4 Qe2 34.Kh3 Qh5 35.Kg2 Rc2 36.Kf1 Qe2 37.Kg1 Qh2 38.Kf1 Qf2) 31.Kh3= Rc2 32.Rh1 (32.Qf7 Kf7 33.e6 Kg6 34.Rh1 Qd4 35.Re1 Qg4) 32...Qe2 33.Qd8 Kh7 34.Qg5 (34.Qc8 Rc8 35.Re1 Qg4 36.Kg2 Rc2 37.Kg1 Qf3 38.Re2 Rc1 39.Re1 Re1) 34...Rd2 (34...Qg2 35.Kh4 Qh2 36.Rh2 Rh2) 35.Qf5-+ g6 (better 35...Kh6 36.Qf4 Kg6-+) 36.Qf7+- Kh8 37.Qf6 (37.Qf4 g5 38.Qf6 Kh7 39.Qf5 Kh6 40.Qf8 Kg6 41.Qg8 Kh6 42.Qe6 Kg7 43.Qe7 Kg6 44.Qf6 Kh7 45.Qf7 Kh6 46.Qf6 Kh7=) 37...Kh7= 38.Qf4?? (better 38.Qe7 Kg8 39.Qe6 Kg7 40.Qe7 Kg8 41.Qe8 Kg7 42.Qe7 Kg8=) 38...Qg2-+ 39.Kh4 (39.Kh4 Rf2 40.Qe3-+). Minister007 (2310) - breiner24 (2315), Rated blitz game, lichess.org, 2021. (=1.d4 A45: Trompowsky Attack 1...Nf6 2.b4 e6 3.a3)

4.b5 d5 5.Nf3 c5 6.e3 Qc7 7.Bb2 c4 8.Nc3 Bd6 9.Be2 Nbd7 10.Qc1 Ne4 11.a4?? (better is 11.0-0+=) 11...Bb4-+ 12.Nd2 Bc3 13.Bc3 Nc3 14.Bf3 Nb6 15.Ra3 Nca4 16.Qa1 Bd7 17.Ra4 Na4 18.Qa4 Qb6 19.Qa3 Qb5 20.c3 Qa4 21.Qb2 0-0 22.0-0 Qc6 23.e4 b5 24.Qa3 b4! 25.cb4 ab4 26.Qb4 c3 27.ed5 ed5 28.Bd5 Qd5 29.Qc3 Rfc8 30.Qe3 Re8 31.Qc3 Re2 32.Nf3 Raa2 33.Qc7 h6 34.Qb8 Kh7 35.Qg3 Bf5 36.h3 Be4 37.Ne5 Qd4 38.Nf7 Bg6 39.Qf3 Rec2 40.Nh6 Kh6 41.Qf8 Ra1 42.Ra1 Qa1 43.Kh2 Qe5 44.g3 Bf5 45.Qh8 Kg6 (45...Kg6 46.Qf8 Rf2 47.Kg1 Qe1#) 0–1. Jenneborg,Seved – Hassim, email 4AMM–09, 1997.

4.Nf3 ab4-/+ 5.e3 d5 6.Bd3 c5 7.dc5 Bc5 8.0-0 Nc6 9.h3 0-0 10.Bb2 ba3 11.Na3 Re8 (11...e5 12.Nd2-/+) 12.Nb5 Ra1 13.Qa1 Nb4 14.Bf6 Qf6 15.Qf6 gf6 16.Ra1 Bd7 17.Nbd4 e5 18.Nb3 e4?? (better 18...Bb6 19.Ne1 Rc8-/+) 19.Nc5+/- Bc6 20.Nd4 ed3 21.cd3 (21.Nd3 Nd3 22.cd3 h5+/-) 21...Rc8 (21...b6 22.Na6 Ra8 23.Rb1 Ra6 24.Rb4+/-) 22.Rb1 Na6 (22...b6!? 23.Na4 Ba4 24.Rb4 Rc1 25.Kh2 Bc2+/-) 23.Na6+- ba6 24.Rb6 (24.Nc6?! Rc6 25.Rb8 Kg7+/-) 24...Be8 25.Ra6 Rc1 26.Kh2 Rc3 (26...Bd7 27.Rf6 Rc3 28.Rd6+-) 27.Rf6 (27.Ra8!? Kf8+-) 27...Rd3 28.Rd6 f6 29.Rd5 Bf7 (29...Kf7 30.e4+-) 30.Rd6 (better 30.Rd8 Be8 31.Re8 Kf7+-) 30...Kg7 (30...Bg6 31.Rf6 Kg7+-) 31.Nf5 Kg6 32.Ne7 Kg5 (32...Kg7 33.Rd3 Bg6 34.Rd7+-) 33.Rd3 Be6 (33...Kh6 34.Rd7 Be6 35.Rd6+-) 34.f4 Kh6 35.f5 Bf7 (35...Bc4 36.Rd6+-) 36.h4 (36.e4!? Kg7+-) 36...Kg7 37.g4 Kf8 (37...Bc4 38.Rd7 Bb5 39.Rc7+-) 38.Nc6 (38.Nc8 Be8+-) 38...Kg7 (38...h6 39.Rd8 Kg7 40.Nd4+-) 39.Rd4 (39.Rd7 Kf8+-) 39...h5 (39...Be8 40.Nd8 Kf8 41.g5+-) 40.Kg3 (40.g5!? Be8 41.Rd6 fg5 42.hg5 h4+-) 40...hg4 41.Kg4 Kh6 42.h5! Be8 (42...Bh5 43.Kf4 Combination) 43.Ne7 (better 43.Rd6 Bh5 44.Kh4+-) 43...Bd7 (43...Bh5 44.Kh4 Bf7+-) 44.Rd7 Kg7 45.Nd5 (45.h6 Kf8 46.Ng6 Ke8 47.Re7 Kd8 48.h7 Kc8 49.h8Q) 45...Kh6 (45...Kf8 46.h6 Kg8 47.Nf4 Kf8 48.h7 Ke8 49.Rb7 Kf8 50.h8Q) 46.Kf4 Kh5 47.Rh7 1-0. Minhntq81 (2475) - zsolti_83 (2545), Rated Bullet game, lichess.org, 2021.

5.c3 b6 6.e3 Bb7 7.f4 Qc7 8.Nf3 Be7 9.Bd3 0-0 10.0-0 d6 11.Nbd2 cd4 12.cd4 Qc3 13.Nb3?? (13.Qc2 Qc2 14.Bc2 Nbd7=) 13...Bd5?? (better 13...a4-+) 14.Rb1=+ a4 15.Na1 Be4 16.Be4 Ne4 17.Bb2? (better 17.Qe2=+) 17...Qe3-+ 18.Kh1 Nf2 19.Rf2 Qf2 20.d5 Nd7 21.de6 fe6 22.g3 (22.Bd4 Qa2 23.Rb2 Qc4-+ (23...Qa3?! 24.Nc2 Qb2 25.Bb2=+)) 22...Rac8 (22...e5 23.Qd3-+) 23.Bd4 (23.Nd4 e5 24.Nc6 Rce8 25.fe5 de5-+) 23...Qa2 24.Rb2 Qd5 (24...Qa3?! 25.Nc2 Rc2 26.Rc2-+) 25.Rd2 Qe4 (25...Qb5 26.Kg2-+) 26.Nc2 (26.Kg2 e5 27.Re2 Qd5 28.Qa4 Rc4-+) 26...e5 27.Be3 (27.Nce1-+) 27...Rc2! 28.Rc2 (28.Qc2 Qf3 Double attack (28...Qf3 Deflection; 28...Qe3 Remove defender; 28...Qf3 Overloading); 28.Rc2 Qe3 Remove defender) 28...Qe3 29.Rc7 Rd8 30.Qd5 Kf8 31.Kg2 e4 (better 31...Qe2!? 32.Kg1-+) 32.Qf5? (better 32.Nd4 Qd2 33.Kh3-+) 32...Nf6 33.Ng5 Qe2 34.Kh3 (34.Kg1 e3 35.Nh7 Kg8 36.Nf6 Bf6 37.Qe6 Kh7 38.Qf5 Kh6 39.Qh3 Qh5 40.Qh5 Kh5 41.Kf1-+) 34...g6 (better 34...Re8 35.Nh7 Kg8 36.Nf6 Bf6-+ (36...gf6 37.Qg6 Kf8 38.Qh6 Kf7 39.Qh7 Ke6 40.f5 Ke5 41.Re7 Re7 42.Qe7 Kf5 43.Qd7 Ke5 44.Qe7 Kd5 45.Qf6-/+)) 35.Qe6 (35.Nh7 Kf7 36.Qf6 Kg8 37.Qg6 Kh8 38.Nf6 Qf1 39.Kh4 Qf4 40.gf4 Bf6 41.Qf6 Kg8 42.Qd8) 35...Qg4= 36.Qg4 Ng4 37.Kg4? (37.Ne6!? Ke8 38.Kg4=) 37...Bg5 (37...h5 38.Kh3 Bg5 39.fg5-+) 38.fg5 (38.Kg5 d5 39.f5 gf5 40.Kf5 e3 41.Rh7 e2 42.Rh8 Kg7 43.Rd8 e1Q 44.Rd7 Kf8 45.Rd5 Qf2 46.Kg4 Qh2 47.Rf5 Kg7 48.Rg5 Kf6 49.Rf5 Ke6-+) 38...d5 (better 38...Re8 39.Kf4 e3-+) 39.Kf4=+ d4 40.Ke4 d3 41.Rc1 (41.Rh7 Kg8 42.Rh6 Kg7-+) 41...d2 42.Rd1 Ke7 43.Ke3 Ke6 44.Rd2 Rd2 45.Kd2 Kd5 46.Kd3 Kc5 47.Ke4 Kb5 (47...Kc4 48.g4=) 48.Ke5?? (better 48.Kd5=) 48...Kc5 (48...Kc4!? 49.Kf6 Kb3 50.Kg7 Ka3 51.Kh7-+) 49.Kf6 b5 50.Kg7 b4 51.ab4 Kb4 52.Kh7 a3 53.Kg6 a2 54.h4 a1Q 55.h5 Qh8 56.h6 (56.g4 Qc8-+) 56...Kc5 57.Kh5 Kd6 58.g6 Ke6 59.g4 (59.g7 Qh7 60.Kg4 Kf7-+) 59...Kf6 60.g5 (60.g7 Qb8 61.g8N Qg8 62.Kh4 Ke5 63.h7 Qh7 64.Kg3 Qd3 65.Kg2 Kf4 66.g5 Qe2 67.Kh3 Qf2 68.g6 Qg3) 60...Kf5 61.g7 (61.h7 Qb8 62.Kh6 Qf8 63.Kh5 Qd6 64.h8Q Qh2) 61...Qe8 (61...Qb8 62.g8Q Qh2) 62.Kh4 Qg6 (62...Qe1 63.Kh3 Kf4 64.Kg2 Qg3 65.Kf1 Ke3 66.g8Q Qf2) 63.g8Q (63.Kg3-+) 63...Qg8 64.Kh3 (64.Kg3 Qb3 65.Kf2 Kf4 66.Ke2 Qc2 67.Ke1 Ke3 68.g6 Qe2) 0-1. Minister007 (1985) - Aaron_Whitney (2310), Hourly Blitz Arena, lichess.org, 2018.

5.dc5 Bc5 6.e3 0-0=.

5.bc6 Nc6 6.e3 d5 7.Nd2 Be7 8.c4 0-0 9.c5 (9.Ngf3 Rb8=) 9...b6 10.cb6 Qb6 11.f4 Ba6 12.Rb1 Qa7 13.Be2 Rab8 14.Rb8 Rb8 15.Ngf3 Ne4 16.Ne4 de4 17.Nd2 f5 18.0-0 Bd6 19.Nc4 Bf8 20.Qc2 Ne7 21.g4 (21.Ne5 Nd5=) 21...Nd5=+ 22.gf5 ef5 23.Ne5 Be2 24.Qe2 Qc7 25.Kh1 Rb1 26.Rg1?? (26.Bd2 Rf1 27.Qf1=+) 26...Bd6 (better 26...Rc1 27.Qb2 Rc3-+) 27.Bd2 (27.Qa2!? Rc1 28.Qd5 Kf8 29.Nd7 Ke7 30.Nc5 Rg1 31.Kg1 Bc5 32.dc5=) 27...Rg1-/+ 28.Kg1 Be5 (28...Qc2 29.Qc4 Qd1 30.Kf2 Qd2 31.Kf1 Be5 32.Qd5 Kf8 33.Qc5 (worse 33.Qe5 Qd1 34.Kf2 Qf3 35.Kg1 Qe3 36.Kg2 Qe2 37.Kg1 Qg4 38.Kf2 Kf7-/+) 33...Kf7 34.de5= (34.Qe5? Qd1 35.Kf2 Qf3 36.Ke1 Qe3 37.Kf1 Qh3 38.Kg1 Kg6-+)) 29.de5 (29.Qb5 Kf8 30.Qd5 Qc2 31.Qa5 Qd1 32.Be1 Qg4 33.Bg3 Bf6+=) 29...Kf7 (29...Qc2 30.Qe1=+) 30.Be1?? (better 30.Qh5 Ke6 31.Qh7+/-) 30...Qc1 31.Kf2 (31.Qd2 Qc5 32.Bf2=+ (32.Qa5? Qe3 33.Bf2 Qc1 34.Qe1 Qf4-+)) 31...Ke6 (31...Qa3 32.Bd2 Qa2 33.Ke1-/+) 32.Qd2? (32.Ba5 Qc5 (32...Qa3?? 33.Qa6 Kf7 34.e6 Kg6 35.e7 Kf7 36.e8Q Ke8 37.Qa8 Kd7 38.Qd5 Qd6 39.Qb7 Ke6 40.Qg7+-) 33.Bb4 Qb6=) 32...Qd2?? (better 32...Qa3 33.Qe2 Qc5 34.Qa6 Kf7 35.Qb7 Kg6 36.Qa6 Kh5 37.Qe2 Kh6-+) 33.Bd2=+ a4 34.Ba5 Ne7 (34...g5 35.fg5 Ke5 36.Bd2=+) 35.Bb4 Nc6 36.Bc5 Kd5 37.Bf8 g6 38.h4 Na5 39.Bb4 Nc4 40.Be7 Nb6 41.Bd6 Kc4 (41...Ke6 42.Bc5 Nc4 43.Ke2=) 42.e6= Nd5 43.e7 Ne7?? (better 43...Nf6=) 44.Be7+- Kd3 45.Bb4 Kc4 46.Ke2 Kd5 47.Kd2 Kc6? (better 47...Kc4+-) 48.Kc3 Kb5 0-1. Minister007 (2300) - desolationonboard (2350), Rated blitz game, lichess.org, 2021.

5.e3 Qc7 6.c4 (6.Bd3 cd4 7.ed4 d5=) 6...cd4 (6...d5 7.cd5 ed5 8.dc5 Bc5 9.Bb2=) 7.ed4+= d5 8.Nf3 dc4 (8...Be7 9.cd5 Nd5 10.Bd3=+) 9.Qa4 Bd6 10.Nc3 (10.Bc4!? 0-0 11.0-0=) 10...Nd5-/+ 11.Bb2 (11.Ne4 Nb6 12.Nd6 Qd6=) 11...Nb6 12.Qc2 0-0 13.Be2 (13.Ng5 g6-/+) 13...Bf4 (13...N8d7 14.Ne4 Bf4 15.Ned2-/+) 14.0-0 a4 (14...Rd8 15.Rfe1-/+) 15.Bc1 N8d7 16.Ne4 Ra5 17.Rb1 (better is 17.Neg5 Bg5 18.Ng5=+) 17...f5 (17...Rd8 18.Re1=+) 18.Bf4 Qf4 19.Ned2 Ra8 (19...Nd5 20.Nc4 Ra8 21.Rbc1+=) 20.Nc4 Nc4 (20...Nd5 21.Rfe1+=) 21.Bc4+/- Nb6 22.Qa2 Re8 23.Rfe1+/- Qd6 24.Rbc1 Nc4 25.Rc4 Bd7 26.Qb2 Rec8 27.Ne5 Qd5 28.Rec1 Rc4 29.Rc4 b6 30.Rb4 Be8 31.Nc4 Rb8 32.Ra4 Rc8 33.Ne3 Qb5 34.Rb4 Qa5 35.Rb6 Qe1-+ 36.Nf1 Rc1 37.Qc1 Qc1 38.h4 Kf7 39.g3 Bc6 (40.f3 e5-+) 0-1. Moeckel,Jean - Hohlstein,Walter, TT-05 TSC, 2003.

5.e3 d5 6.Bd3=.

5.e3 d5 6.Nf3 Nbd7 7.Bb2 c4 8.Nc3 Be7 9.Be2 0-0 10.0-0 Qc7 11.Nd2 Nb6 12.a4 Bb4 13.h3 Rd8 14.f4 Bd7 15.Qe1 Ne8 16.Qf2 Nd6 17.Rfd1 Be8 18.Bg4 (18.Qf3!?+=) 18...Na4-/+ 19.Ra4 Nb5 20.Nb5 Bb5 21.Raa1 c3 22.Ba3 Ba3 (worse is 22...cd2 23.Bb4 ab4 24.Qd2+=) 23.Ra3 cd2 24.Qd2 b6 25.Rda1 Rdc8 26.Bd1 Ba6 27.Kh2 h6 28.Kg1 Bc4 29.Ra4 Ra7 30.R4a3 Qd7 31.Rb1 Qc6 32.Bg4 a4 33.Qb4 b5 34.Raa1 Qb6 35.Kf2 g5 36.fg5 hg5 37.Bh5 f5 38.Bf3 Qb8 39.Rh1 e5 40.Rhe1? (40.de5 Qe5 41.Rhd1 g4 42.hg4 Rg7-+) 40...e4 (40...g4 41.hg4 e4 42.Be2 fg4 43.Bc4 Rc4 44.Qd2-+) 41.Be2 g4! 42.Bc4 (42.hg4 fg4 Combination) 42...Rc4 (42...bc4?! 43.Ra4 Ra4 44.Qa4-/+) 43.Qb2 (43.Qd2 gh3 44.Rh1-+) 43...Qh2 44.Rg1 f4 45.Qb5 (45.Rae1 Rac7 46.Ke2 Rc2 47.Qc2 Rc2 48.Kd1 Ra2 49.Kc1 Qg3 50.Ref1 Qe3 51.Kb1 Qb3 52.Kc1 Qc2) 45...Kh7 0–1. the_great_omni (2270) – grasul2009 (2440), gameknot.com, 2014.

4.Bb2 Ba6 5.Nd2 c5 6.c3 d5 7.Ngf3 Be7 8.Ne5 0-0 9.Qa4 Qe8 (9...Bd6 10.bc5 bc5 11.Rb1+=) 10.Qb3 (10.Qe8!? Re8 11.bc5 bc5 12.dc5=) 10...Nc6-/+ 11.Nc6 Qc6 12.a4 cb4 13.cb4 Bc4 14.Qc3 (14.b5 Bb3 15.bc6 Bb4-/+) 14...Rfc8-/+ 15.f3 (15.b5 Qd7 16.Nc4 Rc4 17.Qb3-+) 15...Qe8 16.Qa3 a5 17.Bc3 b5 18.Nc4?! (18.Qb2 Rab8 19.Qa3 Qf8-+) 18...Rc4 19.Rb1 (19.Bd2 ab4 20.Qb2 ba4 21.e4-+) 19...ab4 20.Bb4 Rb4 (20...Rd4 21.Be7 Rda4 22.Qd6=) 21.Qb4 (21.Rb4 Qf8 22.Qa2 Bb4 23.Kf2 Ra4 24.Qb1-+) 21...Bb4 22.Rb4 ba4 23.e3 a3 24.Rb1 a2 25.Ra1 e5 26.Kf2 ed4 27.ed4 Qa4 28.Be2 Qd4 29.Kg3 Nh5 30.Kh3 Nf4 31.Kg3 Ne2 32.Kh3 Nf4 33.Kg3 g5 34.Rhc1 (34.Kg4 Ne6 35.f4 Qf4 36.Kh5 Qh4) 0–1. Bezukladov,OD – Utemov,Vladimir (2405), Moscow–ch op, 1995. (=1.d4 Nf6 2.b4 e6 3.a3 b6)

4.Nc3 Bb7+= 5.h3 c5 6.b5 (6.bc5 bc5 7.Rb1 Bc6+=) 6...a6 (6...cd4 7.Qd4 Bc5 8.Qd3+=) 7.dc5 (7.Nf3 cd4 8.Nd4 Be7+=) 7...Bc5 8.ba6 (8.Nf3 ab5 9.Nb5 0-0+=) 8...Na6 9.e3 0-0 10.Nf3 Qc8 11.Bb2 Nc7 12.Be2 d5 13.0-0 Be7 14.Re1 Rd8 15.Nd4 e5+= 16.Nf3 d4 17.ed4= ed4 18.Nb1 Bc5= 19.Bd3 Ne6+= 20.Nbd2 Nf4 21.Ne4 Nh3?? 22.gh3+/– Qh3 23.Ng3 Ng4+= 24.Bf1 Qh6 25.Bc1?? Qf6?? 26.Bg2 d3-+ 27.Bg5 Bf2 28.Kf1 Be1?? 29.Qe1?? d2-+ 30.Qd1 Ba6 31.Kg1 Qa1! 32.Qa1 d1Q 33.Qd1 Rd1 34.Nf1 Bf1 35.Bf1 Ra3 36.Kg2 Ne3 37.Be3 Re3 38.Kf2 Rf3! 39.Kf3 Rf1 (39...Rf1 40.Kg2 Rc1-+) 0–1. pillsbury (1995) – joelag (2430), net–chess.com, 2008.

4.c4 Bb7 5.Nd2 g6 6.e3 Bg7 7.Ngf3 0-0 8.Bd3 d6 9.Bb2 Nbd7 10.e4 Re8 11.0-0 Nh5 12.Qb3 Nf4 13.Bc2 c5 14.Qe3 Bh6 15.Kh1 g5 16.Ba4 f5 17.dc5 bc5 18.g3 Ng6 19.bc5 Nc5 20.Be8 Qe8 21.Ng5 Qe7 22.f4 e5 23.Rae1 Bg7? 24.fe5+– Rf8 25.ed6 Qd6 26.Bg7 Kg7 27.Qc5! Qd2 28.Qc7 Kh6 29.h4 (29...Rh8 30.Nf7 Kh5 31.Qb7+–) 1–0. Baer,Werner – Ruiz Symmes,Arthuro, E–4–020 CiF, 2000.

4.c4 c5 5.bc5 bc5 6.e3 Nc6 7.d5 ed5 8.cd5 Ne5 9.Nc3 d6 10.Bb5 Bd7 11.Bd7 Nfd7 12.Nge2 g6 13.0-0 Bg7 14.f4 Ng4 15.h3 Ngf6 16.Rb1 0-0 17.e4 Re8 18.Qc2 Nb6 19.f5 Qe7 20.Bg5 Rab8 21.fg6 fg6 22.Rf2 Nc4 23.Rbf1 Rf8 24.Nf4 Rb2 25.Qa4 Rf2 26.Rf2 Nb6 27.Qc2 Rf7 28.Ne6 h6 29.Bh4 Nbd7 30.Nb5 Ne5 31.Qa4 Qd7 32.Bf6 Bf6 33.Qa6 Nc4 34.Nbc7 Ne5 35.Qa7 Kh7 36.Qb8 Qe7 37.Qe8 Qe8 38.Ne8 Bh4 39.Rf7 Nf7 40.Kf1 c4 41.Ke2 c3 42.a4 Bf2 43.Kd3 Be1 44.Kc2 g5 45.a5 Bf2 46.a6 g4 47.Kc3 gh3 48.gh3 Bb6 49.Kc4 Kg6 50.Kb5 Bf2 51.Kc6 Ne5 52.Kd6 Nc4 53.Kc7 1–0. bambinik (2380) – MichaelHi (2505), internet, 2002.

4.e3 Bb7 5.c4 Be7 6.Nc3 0-0 7.Nf3 d6 (7...a5 8.b5=) 8.Be2 (8.Bd3 Nbd7+=) 8...Nbd7 9.0-0 c5 10.d5 ed5 (10...Ne5 11.Bb2=) 11.cd5+= Rc8 (11...a6 12.e4+=) 12.Bb2 (12.b5 Re8+=) 12...Ne5 13.Rb1 Nc4 14.Bc4 cb4 15.ab4 Rc4 16.Qb3 b5 (16...Qc8 17.Nd2 Rc7 18.e4+=) 17.Nd2+/– Rh4 18.e4 Qd7 19.f4 (19.Rfc1 Rc8+/–) 19...Qg4 (19...Re8 20.Ne2+=) 20.Rbe1 (20.Nb5 Qe2 21.Bf6 Bf6 22.Nd6 Qd2 23.Nb7 Rf4 24.Rf4 Qf4+/–) 20...Bd8 (20...a6 21.Nf3 Rh6 22.e5+=) 21.Ne2 (21.Nb5 Ba6 22.Nd6 Bf1 A) worse is 23.Kf1 Qf4 24.Nf3 Rh2-+ (24...Qd6?! 25.Nh4 Qh2 26.Bf6 Bf6 27.Nf3 Qh1 28.Kf2+=); B) worse is 23.Nf1 Bb6 24.Kh1 Qf4-/+; C) 23.Rf1+=) 21...Qg6+= 22.Bf6 (22.Nd4 Bb6+=) 22...Qf6 23.Nf3 Bb6 24.Kh1 Rg4 25.Qd3 (25.h3 Rg6+=) 25...a6 26.h3 Qh6 27.Nfd4 Bc8 28.Nf5 Bf5 29.ef5 Rh4 30.Rc1 Rb8 31.Rc6 Qf6 32.Rfc1 Qd8 33.g4 (33.Qa3 a5 34.ba5 Ba5+/–) 33...g6 (33...h6 34.Kg2+=) 34.Qg3 1–0. Cirulis,Ilmars (2030) – Ropokis,Dimitrios (1910), FICGS, 2016.

4.e3 Bb7 5.Nf3 Be7 6.Bb2 d6 7.Bb5 Nbd7 8.Nbd2 0-0 9.Bd3 c5 10.e4 cd4 11.Nd4 Ne5 12.Ne2 (12.0-0 a5=) 12...Qc7 13.0-0 d5 14.Be5 Qe5 15.Nf3 Qc7 16.ed5 Nd5 17.c4 Nf4 18.Nf4 Qf4 19.Qc2? (19.Qc1 Qc1 20.Rfc1 a5-/+) 19...g6 (better is 19...Bf3 20.gf3 Bd6-+) 20.Nd2+= Rfd8 21.Nb3?? (better is 21.Rfd1+=) 21...Bd6-+ 22.g3 Qf3 (22...Qf3 23.Be4 Be4 24.Qe4 Qe4-+) 0–1. Bezukladov,OD – Gersov,Evgeny (2190), Alekhine op Moscow, 1996. (=1.d4 Nf6 2.b4 e6 3.a3 b6)

4.e3 d5 5.Nf3 c5 6.c4 cb4 7.cd5 Nd5 8.e4 Nf6 9.Nbd2. Crawford,Gary (2085) – Zamora,Sammy (1870), IECG, 2005.

4.Nf3 Ba6 5.Nc3 d5 6.Bg5 Be7 7.g3 c5 8.Bf6 gf6 (8...Bf6 9.b5 Bb7 10.e3+=) 9.bc5 bc5 10.e4 Qa5 11.Qd2 Bf1 12.Kf1 cd4 13.Nd4 de4 Exerts pressure on the isolated pawn (13...Ba3? 14.Ndb5 de4 15.Ra3+– (15.Na3?! Nc6+–)) 14.Kg2 0-0 (14...f5 15.Rhb1+=) 15.Rab1 (15.Ne4!? Qd5 16.f3=) 15...Rc8+= 16.Ne4 Qd2 (worse is 16...Qa3 17.Ra1 Qb4 18.Nf6 Kh8 19.Qh6 Bf6 20.Qf6 Kg8 21.Rhb1+=) 17.Nd2 Ba3 18.Rb7 Bc5 19.c3 (19.Nb5 Nc6+=) 19...a5 20.Ne4 f5 21.Ng5 Ra7 (21...Bd4!? 22.cd4 Rf8-/+) 22.Rhb1+= Nc6 23.Ra7 (23.Nc6 Rc6 24.Nf7 Rb7 25.Rb7 Bf8=) 23...Ba7 (23...Na7 24.Rb7 Bd4 25.cd4+=) 24.Nc6 Rc6 25.Nf7 a4 (25...Rc3!? 26.Rb7 Bd4-/+) 26.Rb7= Ra6 (26...Ra6 27.Ne5 a3-/+) 0–1. marekt – pgcbies, ChessWorld.net, 2015.

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

4.Nf3 c5 5.bc5 bc5 6.Bg5 h6 7.Bf6 Qf6 8.e3 cd4 9.Nd4 Nc6 10.c3 Bb7 11.Nd2 Nd4 12.cd4 Bd6 13.Nc4 Bc7 14.Qa4 Qg5 15.Qb4 Bc6 16.Qc5 Qc5 17.dc5 0-0 18.Rc1= Rfb8 19.f3 Rb5 20.Nd6 Rb2 21.Nc4 Ra2 22.Rb1 Rb8-/+23.Rb8 Bb8 24.f4 Bg2 25.Bg2 Rg2 26.Kd1 Ra2 27.Rf1 Rh2 28.f5 h5 29.e4 h4 30.Rf3 h3 31.Ne3 Rh1 32.Ke2 h2 33.Nf1 g5 34.fg6 fg6 35.Rh3 Rg1 36.Nh2 Rg2 37.Kf1 Rh2 38.Rd3 Rh7 39.Rd4 a5 40.Ra4 Bc7 41.Rd4 g5 42.Ke2 g4 43.Rd1 g3 44.Kf3 Rh2 (44...Rh2 45.Kg4 Be5-+) 0–1. bambinik – Michael Diosi, internet, 2001.

4.Nf3 d5 5.Nbd2 c5 6.bc5 bc5 7.e3 Nbd7 8.c4 Bd6 9.Rb1 0-0 10.Be2 cd4 11.Nd4 e5 12.Nb5 Nc5 13.cd5 Bf5 14.Rb2 Nd3 15.Bd3 Bd3 16.Rb3 e4 17.Bb2 Rb8 18.a4 Re8 19.Bd4 a6 20.Nd6 Qd6 21.f3 Rb3 22.Nb3 Rc8 23.Nc1 Bc2 24.Qd2 ef3 25.gf3 Ba4 26.Ne2 Rc2 27.Qd3 Qb4 28.Kf2 Qb5 (28...Qb5 29.Qb5 Bb5-+ (worse is 29...ab5 30.Bf6 gf6 31.Rc1+/–); 28...Nd5?! 29.Qa6 Be8 30.Rc1 Rc1 31.Nc1=) 0–1. Wrede,Christian – Woelfelschneider,Peter, TT–11 ETC, 2004.

4.Nf3= Be7 5.e3 0-0 6.Bd3 a5 7.b5 Bb7 8.Nbd2 d6 9.0-0 Nbd7 10.Bb2 Re8 11.e4 Bf8 12.Re1 e5 13.c3 g6 14.Qc2 Bg7 15.Nf1 Nh5 16.Ng3 Nf4 17.Bf1 h5 18.Rad1 Qe7 19.Ne2 Ne6 20.Bc1 Rad8 21.Be3 Bf6 22.g3 h4 23.d5 Nec5 24.gh4 Bh4 25.Nh4 Qh4 26.Ng3 Kg7 27.f3 Rh8 28.Re2 f6 29.Rf2 Bc8 30.f4 Rdf8 31.Be2 ef4 32.Bf4 Ne5 33.Qd2 g5 34.Be5 fe5 35.Qe3 Rf2 36.Qf2 Ne4 37.Ne4 Qe4 38.Rf1 Qf4 39.Qg2 Qe3 40.Kh1 Bh3 41.Qg1 Qg1 42.Rg1 Kh6 43.Rg3 Bf5 44.Kg2 Rf8 45.Re3 g4 46.Kg3 Kg5 47.Bd1 Bd7 48.a4 Rh8 49.Kg2 Bf5 50.Be2 Kf4 51.Rg3 Be4 52.Kg1 Bf3 53.Bf3 gf3 54.Rg7 e4 55.Rc7 Rg8 56.Kf1 Rg2 57.Rf7 Ke3 58.h4 Rc2 59.Kg1 Rc1 60.Kh2 f2 0–1. Pupols – Russell, 1994.

4.Nf3= h6 5.e3 Be7 6.Bd3 0-0 7.0-0 d6 (7...d5 8.c4=) 8.c4+= c5 9.Nbd2 cd4 10.Nd4 Bb7 11.Bb2 d5 (11...Nbd7 12.f4+=) 12.cd5 Nd5 13.Qg4 Nf6 14.Qg3 Bd6 (14...a5 15.b5+=) 15.f4+/– Re8 (15...a5 16.b5+/–) 16.Rfd1 Qe7 (better is 16...a6!?+/–) 17.Nb5+– Nh5 (17...Nbd7 18.Ne4! Bb8+–) 18.Qg4 g6 (18...Rd8 19.Nc4 Bf4 20.ef4 Nf6+–) 19.Bg6! fg6 20.Qg6 Ng7 21.Nd6 Rd8 (21...Rf8 22.Bg7 Qg7 23.Qg7 Kg7 24.Nb7+–) 22.Bf6 Qf8 23.Nb7 Rd7 24.Ne4 Rb7 (24...Qe8 25.Qh6 Qh5 26.Qh5 Nh5+–) 25.Bg7 Qg7 26.Rd8 1–0. themonkey (2140) – lars1000 (1700), GameColony.com, 2002.

4.f4 c5 5.c3 Bb7 6.Nf3 Be7 7.e3 Ne4 8.Bd3 d5 9.Be4 de4 10.Nfd2 Nd7 11.0-0 f5 (11...Ba6!? 12.Re1 Bd3=+) 12.Qb3= Bd5 13.c4 Bb7 14.dc5 (14.bc5!? Rb8 15.cb6 Nb6 16.Nc3+=) 14...bc5= 15.b5 0-0 16.Bb2 Bf6 17.Nc3 Nb6 18.Rfd1 Qd3 19.Nf1? (better 19.Kf2!?=) 19...Qc4-/+ 20.Qc2 Na4?? (20...e5 21.fe5 Be5 22.Rac1-+) 21.Rac1?? (better 21.Qa4 Bd5 22.Qa5+-) 21...Nb2-+ 22.Qb2 Rfd8 23.Qa2 (23.Nd2!? Qd3 24.Kf2-/+) 23...Qa2-+ 24.Na2 (better 24.Rd8 Rd8 25.Na2-+) 24...Rd1 25.Rd1 Bd5 26.Nc1 a6 27.b6 Rb8 0-1. Minister007 (2310) - schmetzger (2330), Rated blitz game, lichess.org, 2020.

5.Nc3 Bf3 6.ef3 d5 7.Bd3 a6 8.Ne2 c5 9.bc5 bc5 10.c4 Be7 11.cd5 Nd5 12.dc5 Qa5 13.Bd2 Qc5 14.0-0 0-0 15.Nf4 Bf6 16.Nd5 Ba1 17.Bb4 Qd5 18.Bf8 Kf8 19.Be4 Qd1 20.Rd1 Ra7 21.Ra1 f5 22.Bd3 Rd7 23.Bc4 Rd6 ½–½. jasa – Alekhino, ChessWorld.net, 2003.

5.e3 c5 6.b5 (6.bc5 bc5 7.Be2 Nc6=) 6...a6 (6...d5 7.Bb2=+) 7.Bd3 (7.Bb2 Be7=+) 7...ab5=+ 8.Bb5 Nc6 9.Nbd2 cd4 10.ed4 d5 (10...Be7 11.0-0=+) 11.Ne5 Qc7 12.c4 Bd6 (12...Nd7 13.Nd7 Qd7 14.0-0=+) 13.cd5= ed5 (better 13...Nd5!? 14.Bb2 Ra5=) 14.Bb2+- 0-0 15.Rc1 Be5 16.de5 Rfe8 (16...Nd7 17.0-0+-) 17.0-0+- Rac8?? (better 17...Nd7 18.f4 Nc5+-) 18.ef6+- 1-0. Vendelo – Vischonti, internet, 2020.

5.e3 Be7 6.Nc3 0-0 7.h3 d6 8.Be2 Nbd7 9.Bb2 a6 10.0-0 Rc8 11.Re1 h6 (11...c5 12.dc5 dc5 13.b5=) 12.Nd2 c5 13.Bf3 (13.dc5 dc5 14.b5 Ra8=) 13...Bf3+= 14.Nf3 (14.Qf3 cd4 15.ed4 d5+=) 14...cd4 15.Qd4 Qc7 16.Rac1 Rfd8 17.Na4 b5 18.Nc3 Nf8 19.e4= Ng6 20.Ne2 Qc4 21.Nd2 Qc6 22.c4= bc4 23.Rc4 Qb7 24.Rc8 Rc8 25.Rc1 Rc1 26.Nc1 Ne5 27.Ncb3 Nc6 28.Qc3 Ne5 29.Qd4 Ng6 30.Na5 Qc7 31.Qd3+= Ne5 32.Be5 de5 33.Ndc4 Nd7 34.Qe3 Nb8 35.Qc3 f6 36.Qb3 Nc6 37.f3 Na5= 38.Na5 Kf7 39.Qc4 Qb6 40.Kh2 Kg6 41.Nc6 Kf7 42.Ne7 g6?? 43.Nc8+– Qb7 44.Nd6 (44.Nd6 Kg8 45.Qe6 Kh8 46.Nb7 h5 47.Qf6 Kg8 48.Nd8 Kh7 49.Ne6 h4 50.Qg7#) 1–0. pillsbury (1935) – kostaspetidis (2130), net–chess.com, 2007.

5.e3 Be7 6.c4 0-0 7.Bd3 Ne4 8.Qc2 f5 9.0-0 Qe8 10.Nbd2 Nf6 11.d5 c5 12.bc5 Bc5 13.e4 Ne4 (worse is 13...ed5 14.ed5 (14.cd5?! Qh5=) 14...Qh5 15.Bf5+/–) 14.Ne4 fe4 15.Be4 g6? (better is 15...ed5 16.Bh7 Kh8+=) 16.Bb2+– Na6?? (better is 16...Rf4+–) 17.de6 Be4 (17...d5 18.Bd5 Be7 19.Bb7 Nc5+–) 18.Qc3 (18.Qc3 Bf2 19.Rf2 Rf6 20.Qf6 Bf3 21.Qg7; 18.Qe4?! Qe6 19.Qc2 Rf3 20.gf3 Kf8+–) 1–0. BlackDemon (2610) – Nimzog, FICS rated standard game, 2013. (=1.d4 Nf6 2.b4 e6 3.a3 b6)

5.Bf4 Be7 6.Bg3=.

5.Bf4 g6 6.e3+= Bg7 7.Bd3 0-0 8.0-0 d6 9.c4 Nbd7 10.Nbd2 a5 11.e4 (11.b5 e5 12.Bg5 h6 13.Bf6 Nf6=) 11...ab4 (11...e5 12.Be3=) 12.ab4+= Nh5 (12...Ra1 13.Qa1 e5 14.Be3=) 13.Bg5 Qc8 14.Ra8 Qa8 15.b5 h6 16.Be3 Nhf6 17.Qc2 e5 18.h3 ed4 19.Bd4 Nc5 20.Ra1 Qe8 21.Re1 Qe7 22.e5 de5 23.Re5 Qd6 24.Bc5 bc5 25.Re1 Nh5 (25...Rd8!? 26.Be4 Ne4 27.Ne4 Qb6=) 26.Be4+= Bc8 27.Bd5 Nf4 28.Ne4 Qd8 (28...Qb6 29.Bc6+=) 29.Qb3 Kh7 (29...Be6 30.Be6 Ne6 31.Qe3+=) 30.Nc5+/– Qf6 (30...Nd5 31.Rd1+/–) 31.Bc6 Rd8 32.Qe3 Qf5 33.Qe7 Rd6 34.Qc7 Rf6?? (better is 34...Qc5 35.Qc8 Nd3+/–) 35.Ne4+– Rc6 36.Qc6 Be6 37.Re3 g5 (37...Ng2 38.Nd6 Qh5 39.Re6+– (39.Kg2 Bh3 40.Kh2 Bd7 41.Kg1 Bc6 42.bc6 Bf8-/+)) 38.b6 g4 39.b7 Be5 (39...gf3 40.b8Q Ne2 41.Re2 fe2+–) 40.Ne5 Qe5 41.Qd6 Qa1 42.Kh2 g3 43.Ng3 Qb1 44.b8Q (44...Qb8 45.Qb8 Ng2 46.Kg2 Bh3 47.Kh3 h5 48.Qf8 Kg6 49.Qg8 Kf6 50.Nh5 Kf5 51.Qg4) 1–0. lucya (2095) – Kid_Azteca (1800), GameColony.com, 2002.

4.Bb2 b6 5.b5 (5.e3 d5=) 5...Na5 6.Nc3 Bb7 7.e3 Bd6 (7...Nc4 8.Bc1+= (8.Bc4? Bg2 9.e4 Bh1-+)) 8.Nf3= Nc4?? (better is 8...Be7=) 9.Bc4+– Bd5 (9...Be7 10.Qe2+–) 10.Bd5 ed5 11.0-0 0-0 12.h3 Re8 13.Re1 h6 14.Na2 Ne4 15.Nc3 f6?? 16.Ne4 de4 17.Nd2 f5 18.Qh5 Qf6 19.Nc4 Re6 20.d5 Ree8 21.Bf6 gf6 22.Qg6 Kf8 23.Qf6 Kg8 24.Nd6 Rf8 25.Qg6 Kh8 26.Qh6 Kg8 27.Qg6 Kh8 28.Nf7 Rf7 29.Qf7 c5 30.bc6 dc6 31.dc6 Rc8 32.Qf6 Kg8 33.Qe6 Kh8 34.Qc8 Kh7 35.Qe6 (35.Qe6 f4 36.Qf7 Kh6 37.ef4 a6 38.Re4 b5 39.Re6#; 35.Qf5 Kh6 36.c7 a6 37.c8Q Kg7 38.Qcf8#) 1–0. pillsbury (1995) – bvanderweerd (1800), net–chess.com, 2007.

4.Bb2 d5 5.e3=.

4.Nf3 d5 5.e3 Bd6 6.Be2 0-0 7.0-0 Bd7 8.Nbd2 a5 9.b5 Na7 10.a4 c6 11.c4 cb5 12.cb5 Nc8 13.Ba3 Ba3 14.Ra3 Nd6 15.Ne5 Rc8 16.Rb3 Qe7 17.Bd3 Rc7 18.Qa1 Rcc8 19.Rc1 h6 20.Rbc3 Rc3 21.Rc3 Rc8 22.Rc8 Bc8 23.Qc3 b6 24.Nc6 Qc7 25.Nb3 Nde4 26.Qc1 Bb7 27.f3 Nd6 28.Ne5 Qe7 29.Qc3 Nc8 30.Qc2 Qd6 31.Nd2 Ne7 32.Qc3 Nd7 33.f4 Nf5 34.Ng4 Qb4 35.Qb4+/– ab4 36.Bf5 ef5 37.Nf2 Nf6 38.Nd3 Ng4 39.Nf1 Kf8 40.Nb4 Ke7 41.h3 Nf6 42.Ng3 g6 43.h4 Ng4 44.Nc2 Kd6 45.Kf1 Ke6 46.Ke2 Nf6 47.Nb4 Ng4 48.Na6 Kd7 49.Kd2 Kd6 50.Nb4 h5 51.Nd3 f6 52.Ke2 Kd7 53.Nf1 Kd6 54.Nd2+– Bc8 55.Nb1 Bb7 56.Nc3 Bc8 57.Kd2 Bb7 58.a5 ba5 59.Nc5 Kc7 60.Nb7 Kb7 61.Nd5 Kc8 62.Ne7 Kc7 63.Ng6+– Kb6 64.Ne7 Kb5 65.Nf5 a4 66.e4 Kc4 67.Kc2 Nf2 68.e5 fe5 69.de5 Kd5 70.Ng7 Ng4 71.g3 Ne3 72.Kc3 Ke4 73.Nh5 Kf3 74.Kb4 Nf5 75.e6 Kg4 76.Nf6 Kg3 77.h5 a3 78.Ka3 Kf4 79.h6! Kg5 80.h7 Kf6 81.h8Q Ke6 82.Qe8 Kd5 83.Kb4 Nd4 84.Qh5 Ke4 85.Kc4 Nf3 1–0. themonkey (2125) – PLB, GameColony.com, 2002.

4.Nf3 Be7 5.c4 0-0 6.d5 Nb8 7.Nc3 d6 8.e4 ed5 9.cd5 Bg4 10.h3+= Bh5 11.g4 Bg6= 12.Bd3 a6 13.e5 de5+= 14.Ne5 Bd3 15.Qd3 Bd6 16.Nc4 Re8 17.Kf1 Be5 18.Ne5= Re5 19.g5 Nd5 20.h4?? Nc6 21.h5? Nc3 22.Qc3 Qd1 23.Kg2-/+ Qd5 24.Qf3 Qf3 25.Kf3-/+ g6 26.Bf4+= Nd4 27.Kg4 Re2 28.Rad1 Nb5 29.a4 Nc3 30.Rc1 Na4 31.Rc7= Rf2? 32.Rb7?? Nc5 (32...Nc5 33.bc5 Re8+–). Thunderbird89 – silver lining, internet, 2010.

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

4.Nc3 a5 5.Rb1 ab4 6.ab4 Be7 7.b5 Ne4 8.Ne4 de4 9.f3 ef3 10.Nf3 0-0 11.e4 Ra4 12.c4 Ra2 13.Bf4 f5 14.b6 Na6 15.bc7 Nc7 16.Qb3 fe4 17.Bc7 Qc7 18.Qa2 ef3 19.gf3 Bh4 20.Kd1 Qf4 21.Be2 Qd4 22.Qd2 Qf2 23.f4 Rf4 24.Kc2 Bg5 25.Qd3 Rd4 26.Rbf1 Qh4 27.Qf3 Rc4 28.Bc4 Qc4 29.Kb1 Bf6 30.Rhg1 Qb5 31.Kc2 Qc5 32.Kb3 Qb6 33.Kc2 Qc5 34.Kd3 Qc3 35.Ke2 Qe5 36.Kd1 Qd6 37.Kc1 Qc5 38.Kd2 Qb4 39.Ke2 Qb2 40.Kd1 Qb1 41.Kd2 Qb2 42.Kd3 Qc3 43.Ke2 Qe5 44.Kd1 Qd6 45.Ke1 Bh4 46.Ke2 Qh2 47.Kd1 Qd6 48.Kc2 Qc6 49.Qc6 bc6 50.Rf4 Be7 51.Rfg4 g6 52.Rh1 c5 53.Kd3 Kg7 54.Ke3 e5 55.Rg3 Bf5 56.Rg2 c4 57.Rc1 Bd3 58.Rg4 Bc5 59.Kf3 Bd4 60.Rd1 h5 61.Rg5 Kf6 62.Rg2 Kf5 63.Kg3 e4 64.Kh4 Bf6 65.Kg3 e3 66.Ra2 Ke4 67.Rh1 e2 68.Ra5 Bc3 69.Rc5 e1Q 70.Re1 Be1 71.Kg2 c3 72.Rc6 Ke3 73.Rc5 c2 74.Rc6 Be4 75.Kf1 Bc6 76.Ke1 c1Q# 0–1. Delfi 1.40 – Butcher111, computer chess game, 2001.

4.Nc3 a5 5.b5 c5 6.a4? (better is 6.Nf3!?+=) 6...cd4-+ 7.Qd4 Nbd7 8.Ba3 (better is 8.Nf3!? e5 9.Qd1-+) 8...Ba3-+ 9.Ra3 e5 10.Qd1 d4 11.Nb1 0-0 12.g3 e4 (12...Nb6!? 13.Nf3 Qe7 14.Bg2-+) 13.Qd4 Qe7 14.Re3? (better is 14.Rc3-+) 14...Rd8 15.Qb2 Ng4 16.Rc3 (16.Bg2 Ne3 17.fe3-+) 16...Nb6 17.Rc8 Rac8 18.e3 (18.Bh3 Na4 19.Qc1-+) 18...Na4 19.Qb3 (19.Qa3 Qf6 20.Nh3 Rc2-+) 19...Qf6 20.Be2 Qf2 0–1. capacuba (2345) – eraymond, net–chess.com, 2015. (=1.d4 e6 2.a3 d5 3.b4 Nf6)

4.Nc3 c6 5.Nf3 Bd6 6.e3 Nbd7 7.Bb2 0-0 8.Be2 (8.Bd3 Re8+=) 8...Qe7 (8...b5 9.0-0+=) 9.h3 (9.0-0 Re8+=) 9...e5 10.de5 Ne5 11.0-0 (11.Ne5 Be5 12.0-0 b5+=) 11...Be6 (11...Nf3 12.Bf3 Qe5 13.Re1-/+) 12.Re1 Qd7 13.Rc1 Bh3 14.gh3= Qh3 15.Ng5 Qh6 16.Nf3?? Qh3 17.Nh2?? Nd3!!-+ 18.Nf3 Nc1 19.Bc1?? Ng4 20.Bf1 Bh2 21.Kh1 Nf2 0–1. pillsbury (2170) – trentthechessnut (2160), net–chess.com, 2010.

4.Nc3 Bd6 5.Bg5 (5.Nb5 e5=) 5...0-0 (5...a5 6.Bf6 Qf6 7.Nb5=+) 6.e4= Nc6? (6...de4!? 7.Ne4 Be7 8.Bf6 Bf6 9.Nf6 Qf6=) 7.e5 (7.b5 Be7 8.bc6 Ne4 9.Be7 Qe7 10.Ne4 de4+–) 7...Be5 (better is 7...Ne5!? 8.de5 Be5+/–) 8.de5+– Ne5 9.Qd4 (9.Nf3 Qd6 10.Bf6 gf6+–) 9...Nc6 (9...Ned7 10.Nf3+–) 10.Qh4 e5 11.Bf6 gf6 12.Bd3 e4 13.Be2 Nd4 14.Rc1 Bf5 15.Nh3 Ne2 16.Ne2 d4 17.0-0 d3 18.cd3 ed3 19.Rfd1 d2? 20.Rc3 a5 21.Qd4 Qd4 22.Nd4 Bh3 23.Rh3 Rad8? 24.Rd2 ab4 25.ab4 Rd5 26.Nf3 Ra8 27.g4 Ra1 28.Kg2 Rb5 29.Rd4 c5 30.bc5 Rc5 31.Rh5 Rh5 32.gh5 Rb1 33.Nd2 b5 (33...Rd1+–) 1–0. Ginger Prince – DanielP4R, ChessWorld.net, 2004.

4.Nc3 Be7 5.e3 0-0 6.Nf3 Ne4 (6...a5 7.b5=) 7.Ne4 de4 8.Nd2 f5 9.c4 (9.Bc4 Qd7=) 9...Bf6 (9...Nd7 10.Bb2+=) 10.Be2= e5 (10...a5 11.Bb2=) 11.d5 f4? (better is 11...Nd7=) 12.Ne4+– fe3 (12...Bf5 13.Bf3+–) 13.Nf6 (better is 13.Be3!? Bf5 14.Bf3+–) 13...Qf6+/– 14.Be3 e4? (better is 14...Qg6!?+/–) 15.0-0+– Qg6 (15...Nd7 16.f3 Qe7 17.fe4 Rf1 18.Qf1 Qe4 19.Qf4+–) 16.Bh5 Qd6 (16...Qf5 17.Bc5 Rf6 18.f4+–) 17.Bc5 Qf6 (17...Qe5 18.Bf8 Kf8 19.f3+–) 18.Bd4 (better is 18.Bf8!? Qf8 19.Qd4 Nd7+–) 18...Qd8 (18...Qg5 19.Be3 Qe5 20.Re1+–) 19.Qe1 (19.Re1!? Bf5+–) 19...Qg5 (19...Qh4 20.Bd1 Nd7+–) 20.Qd1?? (20.Bd1 Bf5+–) 20...Bf5?? (20...Qd8 21.Re1 Bf5+–) 21.Be3+– Qd8 (21...Qf6 22.Qd2+–) 22.Rc1 (22.Bc5 Rf6+–) 22...g6? (better is 22...Nd7+–) 23.Be2 Nd7 (23...a5 24.b5+–) 24.c5 (24.g4 Ne5 25.gf5 Rf5+–) 24...Qc8? (24...Ne5 25.Qd4 Qf6 26.d6+–) 25.Bc4 (better is 25.g4 Ne5 26.gf5 Qf5+–) 25...Kg7 (25...Ne5+–) 26.Bd4 (better is 26.g4 Nf6 27.gf5 Qf5+–) 26...Nf6 27.Qd2 (27.f3 ef3 28.Qf3 h5+–) 27...Qd8 (27...Qd7 28.h3+–) 28.f4 (28.h3!? h6+–) 28...h5 (28...Qd7 29.h3 b5 30.Bb3+–) 29.Qe3 (29.Be5 Kh7+–) 29...b6 (29...Kh7 30.d6!+–) 30.cb6 (30.Be5 Kh7+–) 30...cb6 (30...ab6 31.Rfd1+–) 31.Bb3 (31.Be5 Kh6+–) 31...Kh6 (31...Kh7 32.Rfd1+–) 32.Bf6 (better is 32.Qd2!? Rc8+–) 32...Rf6 33.Rcd1 (33.Qd4 h4+–) 33...Qd6 34.h4 (34.Rd4 Rc8+/–) 34...Bg4 (34...Rc8+/–) 35.f5 (better is 35.Rd4!? Bf5 36.Rc1+/–) 35...Kg7+= 36.Rc1 gf5?? (better is 36...Bf5 37.Qd4 Rd8+=) 37.Rc6+– Qe5 (37...f4 38.Rd6 fe3 39.Rff6 Rh8+–) 38.Rf6 (38.Qg5 Kh7 39.Rf6 Qd4 40.Rf2 Qa1 41.Bd1 Qf6 42.Qf6 Rg8 43.Bg4 Rg4 44.Rc2 Rg7 45.Qf5 Rg6 46.Rc7 Kh8 47.Qg6 e3 48.Qg7) 38...Qf6+= 39.Qg3 (better is 39.Rc1 Kf8 40.Rc6+=) 39...Rc8-/+ 40.d6?? (better is 40.Ba4-/+) 40...Rc3-+ 41.Qe1 (41.Qf2 Rb3 42.Qc2 Rc3-+) 41...Rb3 42.d7 (42.Qa1 Rd3 43.a4 Rd6-+) 42...Qd4 Black prepares the advance e3 43.Kh1 (43.Qf2 e3 44.Qf4 Qd7 45.Qe5 Kg6-+) 43...Qd7 44.a4 (44.Qa1 Kh7-+) 44...Qd4 (44...e3 45.Rg1-+) 45.a5 (45.Qc1 Qd8 46.Qf4 e3 47.Qe5 Qf6 48.Qf6 Kf6-+) 45...Rd3 (45...e3 46.ab6 e2 47.b7 ef1Q 48.Qf1 Qb4 49.Qa1 Rb2 50.Qf1 Rb1 51.Qg1 Rg1 52.Kg1 Qb7 53.Kf2 Qb6 54.Ke1 Qe3 55.Kf1 a5 56.g3 Bh3) 46.Qc1 e3 47.Qc7 Qd7 48.Qe5 (48.Qd7 Rd7 49.Kg1 e2-+) 48...Kg6 49.ab6 (49.Kh2 e2 50.Re1 Rd1 51.Re2 Be2 52.Qg3 Bg4-+) 49...ab6 (better is 49...e2 50.Rg1 ab6 51.Kh2-+) 50.Rc1 e2 51.Kh2 Qd6 52.Re1 (52.Qd6 Rd6 53.b5 Rd1 54.Rc6 Kf7 55.Rc4 e1Q 56.Rc7 Ke6 57.Rc6 Kd5 58.Rd6 Kd6 59.g3 Qe2) 52...Qe5 53.g3 (53.Kg1 Rd1 54.b5 Re1 55.Kf2 Rf1) 53...Qg3 54.Kh1 Bf3 0–1. pillsbury – jjrizzo, net–chess.com, 2017.

4.Nc3 g6 5.Bg5= Bg7 6.e4 de4 7.Ne4 0-0 (7...Ne4 Exploits the pin 8.Bd8) 8.Nf3 Bd7 (8...Nbd7 9.Bb5 c6 10.Bd3=) 9.Bd3 (9.Ne5 Bc6 10.Nc6 Nc6+–) 9...Bc6+= 10.0-0 Be4 11.Be4 c6 12.Bd3 Qd6 13.Qd2 Nbd7 14.c4 Ng4 15.h3 Ngf6 16.Rfe1 Rfe8 17.Bf4 Qe7 18.a4 White intends b5 18...Nh5 19.Bh2 Rad8 20.c5 White terminates the opponent with strong threats 20...b6 (20...Nf8!?+–) 21.Bd6+– Qf6 22.b5 bc5 (22...Nb8 23.Be4 bc5 24.Bc5+–) 23.bc6 (23.dc5?! Qc3 24.Qc3 Bc3 25.bc6 Nc5 26.Bc5 Ba1+–) 23...Nb6 24.dc5 The passed pawn on c6 will quickly become a dangerous weapon 24...Nd5 25.c7 Rc8 26.Bb5 Nc7 (26...Re7 27.Be7 Qe7 28.Qd5 Ba1+– (28...ed5?? 29.Re7 Rc7 30.Rc7 Ba1 31.c6+–)) 27.Bc7 Qe7 (27...Rc7 28.Be8 Rc5+–) 28.Bd6 Qd7 (28...Qb7 29.Be8 Re8+–) 29.Bd7 (29.Bd7 Ba1 30.Ra1+–) 1–0. Pierre – Ondveel, internet, 2019.

4.c4 dc4!? 5.e3 b5-/+.

4.c4 Be7 5.e3= 0-0 6.Nc3 b6 (6...Bd7 7.Nf3=) 7.Nf3 h6 (7...a5 8.b5=) 8.Bb2 (8.cd5 ed5 9.Bd3 c6=) 8...c5 (8...c6 9.Bd3=) 9.dc5+= bc5 10.bc5 Bc5 11.Rc1 (11.cd5 Nd5 12.Nd5 ed5+=) 11...Bb6 (11...dc4!? 12.Bc4 Qe7=) 12.cd5+- Nd5 13.Bd3 (13.Nd5 ed5 14.Be2 Ba5 15.Bc3 Bc3 16.Rc3 Qa5+-) 13...Nd7 (13...Bb7 14.Qe2+=) 14.Nd5+- ed5 15.0-0 Nf6 (15...Rb8 16.Qc2+=) 16.Qb3 Be6 17.Qb4 (17.Qa4+-) 17...Rc8 (better 17...Rb8!? 18.Rb1 Re8+=) 18.Rc8+- Bc8 19.Bf6 Qf6 20.Bh7! Kh7 Theme: Deflection from f8 21.Qf8 Be6 (21...Bg4 22.Nd4+-) 22.Qd6 Qd8 (22...Qg6 23.Rc1+-) 23.Qd8 (23.Qb4 Bc7+-) 23...Bd8 24.Nd4 Bd7 (24...Kg6 25.Rc1+-) 25.Rc1 Bb6 26.Nc6 Be6 27.a4 a5 (27...a6 28.Rb1 Bc5 29.Rb7+-) 28.Rb1 Bc7 29.Rb7 Bd6 30.Na5 Kg8 31.Nc6 Kf8 32.a5 Bc8 33.Rb5 Bd7 34.a6 (worse 34.Rd5 Bh2 35.Kh2 Bc6+-) 34...Bc6 35.Rb6 Bh2 (35...Ba8 36.Rd6 Ke7+-) 36.Kh2 Bd7 37.a7 Be6 38.a8Q Ke7 39.Kg3 Kf6 40.Qd5 g6 41.f4 (41.Qd4 Ke7 42.Rb7 Bd7 43.Rd7 Ke8 44.Rd8 Ke7 45.Qd6) 41...Kg7 (41...Ke7 42.Qd6 Kf6 43.Qe5 Ke7 44.Rb7 Kd8 45.Qh8) 42.Qd4 Kh7 (42...Kg8 43.Rb8 Bc8 44.Rc8 Kh7 45.Rh8) 43.Rb8 g5 (43...Bc8 44.Rc8 g5 45.f5 h5 46.Rh8) 44.Qh8 Kg6 45.Rg8 Kf5 (45...Kh5 46.Rg5) 46.Qe5 1-0. Ventimiglia,Charles - Forsythe,Ken, IECG, 1998.

4.Nd2 Nbd7 5.Ngf3 b6 (5...a5 6.b5=) 6.c3 (6.e3 a5 7.b5 Bd6=) 6...Bd6 7.c4 0-0 8.c5 bc5 9.bc5 Be7 10.e3 a5 11.Bd3 Ba6 12.Bb1 c6 13.Nb3 Bc4 14.Nfd2 Bb5 15.a4 Ba6 16.h3 Qc7 17.Qc2 g6 18.Bb2 Rfb8 19.Bc3 Bc8 20.0-0 Ra7 21.Nc1 Ba6 22.Nd3 Bd3 23.Qd3= Rab7 24.Ba2 1–0. capacuba (2135) – tekooti (2125), net–chess.com, 2010.

4.e3 a5 5.b5 c5 6.bc6 bc6 7.c4 Ba6 8.c5 Bf1 9.Kf1 e5 10.Nf3 Nbd7 11.g3 h5 12.h4 Ng4 13.Kg2 Qf6 14.Bb2? (better 14.Ra2-/+) 14...e4-+ 15.Nfd2?! (15.Bc3-+) 15...Qf2 16.Kh3 Qf5 (better 16...Ne3!? 17.Qg1 Qf5 18.Kh2-+) 17.Kg2 0-1. Minister007 (2350) - zolpi (2335), Rated blitz game, lichess.org, 2021.

4.f3 Bd6 5.g4 Ne4?? (better 5...Nc6-+) 6.fe4+/- Qh4 7.Kd2 Bf4? (better 7...de4 8.Nc3 f5 9.gf5 e5+/-) 8.Kc3 Bc1 9.h3?? (better 9.Qc1 de4 10.Qf4+-) 9...Qh6 10.Kb3 (10.Bg2 a5 11.b5 0-0-/+) 10...Qe3 (better 10...de4 11.Nc3 Bd2-+) 11.Nc3?? (better 11.c3 Qe4 12.Nf3-/+) 11...Bd2 12.Ka2 Bc3 13.Rb1 (13.Qd3 Qd3 14.ed3 Ba1 15.Ka1 h5-+) 13...de4 14.Qc1 (14.h4 e5 15.d5 Bg4-+) 14...Qd4 15.e3 Qd5 16.Rb3 a5 (16...a5 17.Ne2 ab4 18.Nc3 bc3-+) 0-1. Paul593 - Motz Markus (2105), ChessWorld.net, 2009.

4.f3 h6 5.h4 Nc6 (5...Bd6 6.e3-/+) 6.c3 (6.b5 Na5-/+) 6...Nh5 7.Kf2 (7.b5 Na5-/+) 7...Qd6 (7...Bd6 8.e4 de4 9.Bb5-+) 8.e3 (8.Rh3 e5 9.g4 Nf6-/+) 8...a6 (8...Ng3 9.Rh3 Nf1 10.Qf1-/+) 9.b5 (9.Ne2 e5=+) 9...ab5 (9...Qg3!? 10.Ke2 ab5-/+) 10.Bb5-/+ Bd7 11.f4 (better 11.Ne2-/+) 11...Be7?? (better 11...Nf6-/+) 12.Qh5+- 0-0 (12...Na5 13.Bd7 Qd7 14.Nd2+-) 13.Qd1 (13.a4 Nb4 14.Bf1 Nc2+-) 13...e5 (13...Na7 14.Bd3+-) 14.de5 Qg6 (14...Qe6 15.Bd3+-) 15.Bd3 (15.Qd5 Be6 16.Qd1 Rfd8+-) 15...Bf5 (15...Bg4 16.Bg6 Bd1+-) 16.g3 (better 16.h5 Qh7 17.Bf5 Qf5 18.Qd5+-) 16...Bd3-/+ 17.Qb3 (17.Nd2 Rfd8-/+) 17...b6 (better 17...Na5 18.Qb2 Qe4-+) 18.Qd5?? (better 18.Nd2 Rfd8 19.Ngf3-/+) 18...Be4 (18...Bb1?! 19.h5 Qf5 20.g4 Qc2 21.Ne2-+) 19.Qd7 Bh1 (worse 19...Bb1 20.Ne2 Be4 21.h5-+) 20.Qc7 (20.Nd2 Qc2 21.Ne2 Rfd8-+) 20...Bc5 (better 20...Ra7 21.Qb6 Rb8 22.Qb8 Nb8 23.Ne2-+) 21.a4 (21.Qd7 Qe4 22.Qh3 Na5-+) 21...Qc2 (21...Ra7!? 22.Qa7 Na7 23.Ne2-+) 22.Ne2 Bf3 (better 22...Qe4-+) 23.Kf3 Na5 (23...Qd1 24.Kf2 Rfc8 25.Qb7-+) 24.Qd7? (24.Nd2 Qd3 25.Nd4 Qc3-+) 24...Rad8 (24...Nb3!? 25.Na3 Ba3 26.Ra3 Nc1 27.Nd4-+) 25.Qb5 Nb3 26.Ra3 Ba3 (26...Nc1 27.Nd4 Qd1 28.Kg2 Ba3 29.Na3 Qd2 30.Kh3-+) 27.Na3 (27.Ba3 Qb1 28.Kf2-+) 27...Qa2 (27...Qd1 28.Kg2-+) 28.Qb6?? (28.Nc4 Rd1 29.Nb2-+) 28...Nc1 29.Nc1 Qa3 30.Ne2 Qa4 31.Qb1 (31.e6 Rd2 32.ef7 Rf7 33.Qb8 Rf8-+) 31...Rd2 32.Kf2 (32.Nd4-+) 32...Qc4 33.Qe1 Rfd8 34.Kf3 Rd1 35.Qd1 Rd1 36.g4 (36.Nd4 Qd5 37.e4 Rd3 38.Kg2 Qe4 39.Kf2 Rd2 40.Ne2 Qe2 41.Kg1 Qd1) 36...Rf1 37.Kg2 (37.Kg3 Qe2 38.h5 Qf3 39.Kh4 Rh1) 37...Qe2 38.Kg3 Qf2 (38...Rf3) 39.Kh3 Rh1 0-1. bluefrog13 - kiwibiker54, gameknot.com, 2019. (=1.d4 d5 2.b4 e6 3.a3 Nf6)

4.f4 Be7=+ 5.Nf3 0-0 6.e3 a6 7.Bd3 b6 8.Bd2 c5 9.c3 a5 10.b5 Nbd7 11.a4 Re8 12.0-0 Ne4 13.Be1 f5 14.Qc2 Ndf6 15.Nbd2 (15.Bh4 Bb7=+) 15...c4 (better 15...Ng4!? 16.Qc1 c4=+) 16.Be4= Ne4 (worse 16...de4 17.Ne5+=) 17.Ne4 fe4 (worse 17...de4 18.Ne5+=) 18.Ne5 Bd6 19.h3 Re7?? (better 19...Rf8=+) 20.Bh4+/- Be5? (20...Qc7 21.Be7 Qe7 22.Nc6+/-) 21.de5 (better 21.fe5!? Bd7+-) 21...Raa7 22.Be7 Re7 23.Qd2 Bd7 24.Qd4 Be8 25.g3 (25.Rad1 Rd7+-) 25...Bg6 26.Kg2 h5 27.g4 hg4 (27...Rf7!? 28.Rf2+-) 28.hg4+- Rf7 29.Rh1 1-0. Minister007 (2325) - Ahmadalrahely9899 (2310), Rated blitz game, lichess.org, 2020.

4.Bf4 a5 5.b5 Bd6 6.Bd6 Qd6=.

4.Bf4 a5 5.b5 Bd6 6.g3+=.

4.Bf4 a5 5.b5 Be7=.

4.Bf4 b6 5.e3 Bd6 6.Bd6 Qd6 7.c4 dc4 8.Bc4 0-0 9.Nf3 Ba6 10.Ba6 Na6 11.Qa4 Nb8 12.0-0 a5 13.Nbd2 Nc6 14.Rfc1 Ne7 15.b5 Nfd5 16.Nc4 Qd8 17.Nce5 f6 18.Nd3 Kh8 19.e4 Nb4 20.ab4 ab4 21.Qb4 Ra1 22.Ra1 f5 23.Nf4 fe4 24.Ne6 Qd5 25.Qe7 1–0. themonkey (2055) – baguio_boy (1845), GameColony.com onlin, 2002.

4.Bf4 Bd6 5.Qd2 Nc6 6.Nc3 0-0 (6...e5 7.de5 Be5 8.Be5 Ne5 9.0-0-0+=) 7.Nf3= Re8 (7...Ne4 8.Ne4 de4 9.Ne5=) 8.g3 (8.Bd6 cd6 9.e3 e5=) 8...a6 (8...e5 9.de5 Ne5 10.Ne5 Be5 11.Bg2+=) 9.Bh3 (9.Bg2 Bf4 10.Qf4 Qd6=) 9...e5 10.de5 (10.Bc8 Qc8 11.de5 Ne5 12.Ne5 Be5 13.Be5 Re5+=) 10...Ne5-/+ 11.Bc8?? (better is 11.Bg2-/+) 11...Nf3-+ 12.Kd1 Nd2 13.Bb7 Rb8 14.Ba6 Bf4 15.gf4 Nde4 16.Ne4 Ne4 17.Ke1 Qf6 18.f3 Qa1# 0–1. langelli (2020) – mgoodrich (2080), net–chess.com, 2008.

4.Bf4 Bd6 5.Qd2 Ne4 6.Qe3+=.

4.Bf4 Bd6 5.Bd6 cd6 6.e3 0-0 (6...e5 7.Be2=) 7.Nf3 Qc7 8.Be2 Re8 (8...e5 9.0-0+=) 9.0-0 e5 10.de5 (10.Nbd2 Qc3=) 10...de5+= 11.Nbd2 (11.Qd2 Be6+=) 11...Qc3 12.Ra2 Bg4 13.h3 Bf3 14.Nf3 a5 15.b5 Nbd7 16.Nh4 Nc5 17.Nf5 Rad8 18.Qc1 Nce4 19.f3 Nd6 20.Nd6 Rd6 21.Rd1 d4 22.e4 Nh5+= 23.Qd2 Nf4 24.Kh2 Qc7 25.g3 Ne2-/+ 26.Qe2 Rc8 27.a4 h5 28.h4 Qe7 29.Rd3 b6 30.Qd2 Rd7 31.Qg5 Qe6 32.Rb2 Rdc7 33.Rd2 Rc4 34.Qh5 Ra4 35.Qf5 Qf5-+ 36.ef5 Ra1 37.f4 f6 38.Kh3 a4 39.Rb4 Ra8 40.fe5 fe5 41.Kg4 a3 42.f6 gf6 43.Rb3 a2 44.c3 d3! 45.Rbb2 Rf1 46.Ra2 Ra2 47.Ra2 e4 48.Ra8 Kg7 49.Rd8 Rf2 50.Rd7 Kg6 51.h5 Kh6 52.c4 d2 53.c5 e3 54.cb6 e2 55.Rd2 f5 56.Kh3 e1Q 57.Rf2 Qf2 58.b7 Qg1 (58...Qg1 59.g4 fg4 60.Kh4 Qg2 61.b8Q Qh3#) 0–1. Jonsson,Gudbrandur – Vetter,Udo, TT–11 ETC, 2003.

4.Bf4 Bd6 5.Bd6 cd6 6.Nf3 a5=.

4.Bf4 Be7 5.Nd2 0-0 (5...Bd7 6.e3=) 6.c4 (6.e3 a5=) 6...c6 (6...dc4 7.Nc4 b5 8.Na5+=) 7.Ngf3 (7.e3 dc4 8.Bc4 a5=) 7...Nbd7 8.c5 (8.e3 a5=) 8...Nh5 9.Be3 (9.Be5 f6 10.Bg3 a5=) 9...Qc7 (9...a5 10.ba5 Qa5 11.Qc2+=) 10.Nb3 e5 11.de5 Ne5 12.Nbd4 Nf3 13.Nf3 Bf6 14.Bd4 Bd4 15.Nd4= Nf6 16.e3 Ne4 17.Be2 Qe5 18.0-0 Nc3 19.Qd2 Ne4 20.Qe1 f5 21.f4 Qf6+= 22.Bd3 Bd7 23.Rf3 a6 24.Rc1 Kh8 25.Ne2 Rg8 26.Nd4 Raf8 27.Rc2 g5 28.fg5+= Qg5 29.Be4 fe4 30.Rg3 Qh6 31.Rg8 Rg8 32.Rf2 Qg5 33.Qd2 h5 34.Ne2 Qg7 35.Rf4?? Qa1 36.Qc1 Qe5 37.Qc3 Qc3= 38.Nc3 Kg7 39.Ne2 Rf8 ½–½. capacuba (2205) – michelleke (2280), net–chess.com, 2008.

4.Bf4 Be7 5.e3 0-0=.

4.Bf4 Be7 5.Nf3 0-0 (5...a5 6.b5=) 6.e3= b6 7.Bd3 Nbd7 (7...c5 8.0-0=) 8.Qe2 (8.Nbd2 c5=) 8...c5 9.c3 (9.bc5 bc5 10.dc5 Nc5=+) 9...cb4 (9...Nh5 10.Be5=) 10.ab4 (10.cb4 Nh5=) 10...Bb7 (10...a5 11.ba5 ba5 12.0-0=) 11.0-0 (11.b5 Nh5=) 11...h6 (11...a5 12.ba5 Ra5 13.Ra5 ba5 14.Nbd2=) 12.Ba6 (12.Na3 Nh5=) 12...Ba6 13.Ra6 Nb8 (13...Nh5 14.Be5=) 14.Ra2 Nc6 (14...a5 15.ba5 ba5 16.Rc1=) 15.Nbd2 (15.b5 Na5=) 15...a5= 16.Ne5 (16.b5 Na7=) 16...Ne5 17.de5 Nd7 18.ba5 ba5 19.Qg4 (19.c4 Nb6=) 19...Bg5 (19...g5 20.h4 h5 21.Qg3=) 20.Nf3 (20.c4!?=) 20...Bf4=+ 21.ef4 f5 22.Qg6 Qe7 23.Rfa1 Qf7 24.Qf7+= Rf7 25.Ra5+/– Rc8 26.Ra8 Rff8 27.Rc8 Rc8 28.Ra3 Nc5 29.Nd4 Rc7 30.f3 Kf7 31.Nb5 Rd7 32.Ra7 Ra7= 33.Na7 Na4 34.Nb5 Ke7 35.Kf2 Kd7 36.Ke3 Kc6 37.Nd4 Kd7 38.Kd2 Nb6 39.Kd3 Nc4 40.g4 g6 41.h4 Nb2 42.Ke2 Na4 43.Kd2+/– Nb6 44.Ke3 Nc4+/– 45.Kf2 Nb6? 46.Kg3 Na4? 47.Ne2?? Kc6?? 48.h5+– gh5 49.gf5 ef5 50.Kh4 Nc5 51.Nd4 Kd7 52.Kh5 Nd3 53.Kh6 Nf4 54.Kg5 Ne2 55.Ne2 (55...Ke6 56.f4+–) 1–0. SWAT_TEAM – hansson, ChessWorld.net, 2004.

4.Bg5 a5 5.b5 Nbd7 (5...Bd6 6.e3=+) 6.Nf3 (6.e3 Bd6=+) 6...h6 (6...Bd6 7.e3=+) 7.Bh4 Bd6 (7...g5 8.Bg3=+) 8.Bf6 (8.e3 0-0=+) 8...Qf6-/+ 9.e3 c5 (9...a4 10.c4=+) 10.c3 (10.bc6 bc6 11.c4 0-0=+) 10...0-0-/+ 11.a4 (11.Be2 cd4 12.cd4 e5-/+) 11...cd4 12.cd4 (12.Qd4!? Qe7-/+) 12...Bb4-+ 13.Nbd2 e5 14.Ra2 (14.Be2 e4 15.Ng1 Nb6-+) 14...e4 15.Ng1 Nb6 16.Ne2 Nc4 (16...Bg4 17.h3 Bh5 18.g4-+) 17.Nf4 Nd2 18.Rd2 Bd2 (18...Qd6 19.Be2-+) 19.Qd2 Qd6 (19...Bg4 20.h3 Be6 21.Be2-+) 20.Be2 Bd7 (20...Be6 21.0-0-+) 21.0-0 (21.f3 g5 22.Nh5 f5-+) 21...Rfc8 22.Rb1 b6 23.Qa2 Be6 24.h3 Rc3 25.Bd1 Rac8 26.Ne2 Rd3 27.Nf4 Qa3 28.Qe2 Rdc3 29.Kh2 Bd7 30.Nd5?? Qd6 31.Nf4 g5 32.g3 gf4 33.gf4 Kf8 34.Qh5 Qg6 35.Qd5 Ke7 36.Bh5 Qe6 37.Qb7 Qh3 (38.Kg1 Rg8 39.Bg4 Rg4) 0–1. pauloroberto – hardgamer, internet, 2006.

4.Bg5 Bd6 5.e3+=.

4.Bg5 h6 5.Bf6 gf6 6.Nf3=+.

4.h3 Bd6 5.e3 Nc6 6.b5 Na5 7.a4 Bd7 8.Qd2 (8.Ba3 Ba3 9.Na3 Rc8=) 8...b6 9.Nc3 0-0 10.Bd3 c6 11.bc6 Bc6 12.Nf3 Re8 (better is 12...Ne4!? 13.Be4 de4-+) 13.0-0 Qd7 (13...Ne4 14.Qe1+=) 14.Bb2 (14.Ne5 Qe7=) 14...e5 15.de5+= Be5 16.Ne5 Re5 17.f4 Rh5 18.Nb5 Bb5 19.Bb5 Qd6 20.Be2 Rc8?? 21.Bc3?? Nc4+= 22.Bc4 Rc4 23.Rfe1 a5 24.Bf6 Qf6 25.Rf1 Qh6 26.Rfd1 Qg6 27.Rab1 Rh3?? 28.Qd5+– h6 29.Qc4 Re3 30.Re1 Rg3 31.Re2 Kh7 32.Qe4 f5 33.Qd4 h5 34.Qf2 h4 35.Re3 Rg4 36.Rbb3 Kh6 37.Rh3 Kh5 38.Rb6 Rg2 39.Qg2 Qb6 40.Kh2 Qf6 41.Qg5! Qg5 42.fg5 Kg5 43.c4 Kf6 44.c5 Ke6 45.Rd3 g6 46.c6 g5 47.c7 g4 48.c8Q Kf6 49.Qd8 Kg6 50.Rd6 Kh5 51.Qh8 Kg5 52.Qh6 1–0. Greg1982 – pieeater, ChessWorld.net, 2011.

4.e3 a5 5.b5 a4 6.c4 dc4 7.Bc4 Nbd7 8.Nc3 Nb6 9.Be2 Be7 10.f4 (10.Nf3 Nfd5 11.Qc2 Nc3 12.Qc3 Bd7+=) 10...0-0 11.Nf3 Nfd5 12.Bd2 Nc3 13.Bc3 Bd7 14.0-0 Nd5 15.Qd2 Nc3 16.Qc3 Bd6 17.g3 (17.Ne5 Qe7+=) 17...Qe7 (17...c6 18.Qb2=) 18.e4 c6 19.b6 Rfd8 (19...Qd8 20.Ne5=) 20.e5+= Bb8 21.Nd2 g6 22.Ne4 Be8 23.Rf3 Kg7 24.Raf1 Rd5 25.Kf2 Qd8 26.Nf6 Rda5 27.Bc4 h5 28.h3 Kf8 29.Ke3 (better 29.Rb1!?+/-) 29...Qb6+= 30.R3f2 Ba7 31.Rb2 Qc7 32.g4 (32.Rd1 Rb8=) 32...hg4 (better 32...b5!? 33.Ba2 Rd8=) 33.hg4+= Rd8 Exerts pressure on the backward pawn 34.Rh1 (34.Rd1 b5 35.Bf1 Bb6+=) 34...Ke7 (34...Re5 35.Kf3 Bd4 36.Rh8 Kg7 37.Ne8 Kh8 38.Rh2 (38.Nc7?? Bc3 39.Rh2 Kg7 40.fe5 Be5 41.Ne6 fe6-+) 38...Kg8 39.Nc7 Bc3 40.fe5 Be5 41.Ne6 fe6 42.Re2-+) 35.Rh8 (better 35.Rd1+=) 35...Rad5?? (better 35...Re5! 36.Kf3 Bd4 (36...Kf6 37.de5 Ke7 38.Ke2+=) 37.Ng8 Kf8 38.Nf6 Kg7 39.Ne8 Kh8 40.Rh2 Kg8 41.Nc7 Bc3 42.fe5 Be5 43.Ne6 fe6-+) 36.Bd5+- (36.Ne8 Re8 37.Re8 Ke8 38.Bd5 ed5+-; 36.Re8?! Re8 37.Bd5 Rc8 38.Qb4 c5 39.Qa4 cd4 40.Ke2 b6 41.Qd4 b5 42.Qb4 Bc5 43.Qb5 Ba3+-) 36...ed5 (36...c5 37.Ke2 b6 38.Ng8 Kd7 39.Be6 Ke6 40.Qc4 Kd7 41.Nf6 Kc8 42.Ne8 Qc6 43.Nd6 Qd6 44.ed6 Rh8 45.Qf7 Rh2 46.Kf3 Rh7 47.Qh7 Kb8 48.Qc7 Ka8 49.Qc8 Bb8 50.Rb6 cd4 51.Qb8) 37.Re8 Re8 38.Ne8 (better 38.Nd5 Kd8 39.Nc7 Kc7 40.Qb4+-) 38...Ke8 39.Rh2 (39.Qb4 b5+-) 39...Qb6 (39...c5!? 40.Kd2 Qb6 41.Rh8 Kd7+-) 40.Qb4 Qb4 41.ab4 b6?? (41...Ke7+-) 42.f5 (better 42.Rh8 Kd7 43.Ra8 Ke6+-) 42...gf5 43.gf5 c5 (43...b5+-) 44.b5 Bb8 (44...a3 45.Rh8 Kd7 46.Ra8+-) 45.Rh7 (45.Rh8 Ke7 46.Rb8 f6+-) 45...f6 (45...Bc7 46.e6 Bd6 47.Rf7+-) 46.e6 (better 46.Rh8 Ke7 47.Rb8+-) 46...cd4 (46...Bd6+-) 47.Kd4 Be5 48.Kd5 a3 49.Ra7 Bb2 (49...Bh2 50.Ra3 Be5 51.Kc6+-) 50.Kd6 White prepares the advance e7 (better 50.e7 a2 51.Ra2 Bc3 52.Ke6 Ba5 53.Rg2 Bc3 54.Rg8) 50...Kf8 (50...Be5 51.Kc6 Bb2+-) 51.Ra8 (51.e7 Ke8 52.Ra8 Kf7 53.e8Q Kg7 54.Qg6) 51...Kg7 52.e7 a2 53.e8Q a1Q (53...Be5 54.Kd7 Bb8 55.Qg6 Kf8 56.Rb8) 54.Qg8 (54.Qg6) 54...Kh6 55.Qh8 (55.Qg6) 55...Kg5 56.Ra1 (56.Rg8 Kf4 57.Qh4 Ke3 58.Qh3 Ke4 59.Rg4 Kf5 60.Qf3) 56...Ba1+- 57.Qh7 1-0. Minister007 (2335) - Rancic (2420), Rated blitz game, lichess.org, 2021.

4.e3 a5 5.b5 c5 6.c3 (6.dc5 Bc5 7.Nf3 Qc7=) 6...Bd6 7.f4 (7.dc5 Bc5 8.Nf3 0-0=) 7...0-0 8.a4 Ne4 9.Nf3 f5 (9...c4 10.Be2=+) 10.Bd3 Nd7 11.0-0 Ndf6 12.c4 b6 13.Nbd2 Bb7 14.cd5 Bd5 15.Bb2 Qe7 16.Be4 Ne4 17.Ne4 fe4 18.Ne5 Be5 19.de5 Rad8 20.Qc2 Rd7 21.Rf2 g6 22.g3 Rfd8 23.Raf1 Bb7 24.Kg2 Rd3 25.Bc1 (25.Re1 Bd5 26.Bc3 Qf7=+) 25...Bd5-/+ 26.h4? (better 26.Qb2-/+) 26...Bb3-+ 27.Qb1 Ba4 28.Kh3 Qd7 29.g4 Bb5 30.f5 (30.Kh2-+) 30...a4?? (30...Rd5 31.Rg1 ef5 32.gf5 Re5 33.Kh2-+) 31.fg6?? (better 31.fe6 Qe6 32.Qb5=) 31...hg6-+ 32.Rf6 (32.Rh1-+) 32...Rb3 33.Qe4 Bf1 34.Rf1 Qd3?? (better 34...Qe8 35.Rf6 Rb4-+) 35.Qf4 Qd7 36.Qg5 White prepares h5 (36.Qe4 Qe8-+) 36...Kh7 (36...Qe8 37.h5 Rd7=) 37.Rf6?? (37.Rd1 a3 38.Rd7 (38.Qd8?! Qd8 39.Rd8 Rc3 40.Rd7 Kg8 41.Ba3 Re3 42.Kg2 Ra3=) 38...Rd7 39.h5+=) 37...Rg8-+ 38.h5 Qe8 39.Kh4 (39.Kg2 Rb1 40.e4 Rg7 41.hg6 Kg8 (41...Rg6?? 42.Qh5 Kg7 43.Bh6 Kh7 44.Bf8 Kg8 45.Bc5+-) 42.Re6 Qf8-/+) 39...Rb1 40.e4 b5?? (40...Rg7 41.hg6 Kh8-+ (41...Rg6?? 42.Qh5 Kg7 43.Bh6 Kh7 44.Bf8 Kg8 45.Rg6 Qg6 46.Qg6 Kf8 47.Qf6 Ke8 48.Qe6 Kd8 49.Qg8 Kc7 50.e6+-)) 41.Qh6 1-0. Minister007 (2310) - ElPeinador (2300), Rated blitz game, lichess.org, 2020.

4.e3 a5 5.b5 c6 6.f4 Ne4 7.Nf3 f5 8.c4 cb5 9.cd5 Qd5 10.Nbd2 Bd7 (10...Nd2 11.Bd2 Nc6=+) 11.Qb3 (better 11.Ne4!? Qe4 12.Ne5=) 11...Qb3-/+ 12.Nb3 Bd6 13.Nfd2 Nd2 14.Bd2 b6 15.Be2 Na6 16.Bf3 Ra7 17.Kf2 Ke7 18.Rhc1? (better 18.Rhb1-/+) 18...a4-+ 19.Nc5? (19.Rcb1 ab3 20.Rb3-+) 19...bc5 (19...Bc5?! 20.dc5 bc5 21.Bc3-+; 19...Nc5?! 20.dc5 bc5 21.Rab1-+) 20.dc5 Nc5 (worse 20...Bc5 21.Bc3-+) 21.Ke2 (21.Rd1 Nb3 22.Ra2 Rc8-+) 21...Nb3 22.Rcb1 Na1 23.Ra1 Rb8 24.Bc3 g6 25.Bd4 Ra6 26.Kd1 (26.g3 Bc6-+) 26...b4 27.ab4 Bb4 28.Be2 Bb5 29.Rb1 Be2 30.Ke2 a3 (better 30...Bd6 31.Ra1-+) 31.Rb4 Rb4 32.Bc5 Kf7 33.Bb4 a2 34.Bc3 a1Q (34...a1Q 35.Ba1 Ra1-+) 0-1. Minister007 (2345) - Fasmc17 (2355), Rated blitz game, lichess.org, 2020.

4.e3 a5 5.c3 ab4 6.cb4 Bb4 7.Bd2 Bd6 8.a4 b6 9.Nf3 0-0 10.Bd3 c5 11.dc5 bc5 12.0-0 c4 13.Bc2 Na6 14.Qe1 Nc5 15.Nc3 Bd7 16.Qd1 Ra7 17.Qb1 (17.Nb5 Bb5 18.ab5 Rb7-+) 17...Qc7 18.Nd4 (18.Nb5 Bb5 19.ab5 Rb7-+) 18...Rb7 (18...Bh2!? 19.Kh1 Be5 20.Ncb5 Bb5 21.Nb5-+) 19.Ndb5 Qb8 20.Qa2? (20.f4 Rc8-+) 20...Be7 (better is 20...Bh2 21.Kh1 Be5-+) 21.f3 Ne8 (21...Qe5 22.Rfb1-+) 22.Rfb1-/+ Nd6 23.Qa3? (better is 23.Nd4!?-/+) 23...Nb5-+ 24.ab5 Bb5 25.Qc1 Bc6 26.Rb7 Qb7 27.Rb1 Qd7 28.Ne2 e5 29.Rb6 (29.Ng3 Ra8-+) 29...Qc7 30.Rb2 (30.Rb1 Ra8-+) 30...Ba4 (30...Nd3 31.Bd3 cd3 32.Nc3-+) 31.Ba4 (31.Nc3 Qd7 32.Na4 Na4-+) 31...Na4 32.Ra2 Nc5 33.Ba5 Qc6 34.Bc3 (34.Qa1 d4!-+) 34...Nd3 35.Qa1 Qc5 (35...Qb6!? 36.Bd2 Bc5 37.Ra6 Be3 38.Kf1-+) 36.Bd2 Bf6 (36...Bg5 37.f4 Bf4 38.Nf4 ef4 39.Ra5-+) 37.Qb1 (37.Ra5 Qc6-+) 37...d4 38.Ra5 Qc7 39.ed4 ed4 40.Rd5 Qa7 41.g3 (41.Ra5 Qe7 42.Qf1 c3-+) 41...Rb8 42.Rb5 Re8 43.Kf1 (43.Rb7 Qa8 44.Qb5 c3-+) 43...h6 44.Nf4 Nf4 45.Bf4 d3 46.Rb7 Qa1 0–1. jaortiz (2345) – amikhlin (2500), net–chess.com, 2014. (=1.d4 e6 2.a3 d5 3.b4 Nf6)

4.e3 b6 5.Nf3 Bd6 6.c4+=.

4.e3 b6 5.Nf3 Bd6 6.Bd3 Nbd7 7.c4 dc4 8.Bc4 Bb7 9.Nc3 0-0 10.Bb2 a6 11.0-0 b5 12.Bd3 Nb6 13.Qe2 Nfd5 14.Ne4 Be7 (better is 14...Na4!?+=) 15.Nc5+/– Bc8 16.Ne5 Qd6 17.Ne4 Qd8 18.Nc6 Qd7 19.Ne7 Qe7 20.Nc5 f5 21.Rad1 f4 22.g3 f3 23.Qc2 h6 24.Rc1 Qg5 25.Rfe1 Qg4 26.Bf1 Nc4 27.Bc4 bc4 28.Qc4 Rf5 29.Qf1 Rh5 30.Nd3 Rh3? (better is 30...Bd7!? 31.e4 Nf6+/–) 31.Kh1 (31.Rc5 Bd7 32.e4 Qh5+–) 31...Bb7?? (better is 31...a5 32.b5 Qh5+–) 32.e4 Nf6 33.Nf4 Ne4 34.d5 (34.Nh3?! Qh3 35.Kg1 Qg4+/–) 34...ed5 (34...Ng3 35.fg3 Bd5+–) 35.Rc7 Nd2 (35...Bc6 36.Re4 de4 37.Qc4 Kh7 38.Qc6 Rd8 39.Nh3 Rd1 40.Ng1 Rd8 41.Bg7 Qg7 42.Qe4 Kh8 43.Rg7 Kg7 44.Qe7 Kg8 45.Qd8 Kg7 46.Qe7 Kh8 47.Nf3 Kg8 48.Ne5 h5 49.Qf7 Kh8 50.Ng6) 36.Qh3 (36.Nh3?! Nf1 37.Nf4 d4 38.Bd4 Rd8 39.Rg7 Qg7 40.Bg7 Rd2+–) 36...Qh3 (36...Nf1 37.Qg4 Ng3 38.hg3 g5 39.Qe6 Kf8 40.Ng6) 37.Rg7 Kf8 38.Ng6 1–0. capablancaven (1970) – ubermensch43, gameknot.com, 2011.

4.e3 b6 5.Nf3 Be7 6.c4 c5 7.dc5 bc5 8.bc5 Bc5 9.cd5 Qd5 10.Bb5 (10.Qd5 ed5 11.Nbd2 0-0=) 10...Bd7 11.Bd7 Nbd7 (worse is 11...Nfd7 12.Qd5 ed5 13.Nc3+=; worse is 11...Kd7 12.Qe2+=) 12.0-0 Qh5 (12...0-0 13.Qd5 Nd5 14.Bd2+=) 13.Bb2 0-0 14.Bf6 Nf6 15.Nbd2 Rfd8 16.Qa4 Ng4 (16...Rd5 17.Rab1+=) 17.Ne4= Bb6 18.Ng3 Qg6 19.Qf4 Nh6 (19...Rd5!?=) 20.Ne5+= Qf6 21.Qf6 gf6 22.Nf3 (22.Nc6 Rd6 23.Rfc1 Kg7+=) 22...Kf8 23.a4 a6 (23...Ng4 24.h3 Ne5 25.Ne5 fe5 26.a5=) 24.Rab1+= Rab8 25.Rb4 (25.h3 Bc7+=) 25...Ba7 26.Rh4 Kg7 27.Nh5 Kg6 28.Ng3 Rb7 29.Rc4 Kg7 (29...Rb2 30.Nh4 Kg5 31.h3+=) 30.Nh5 Kg6 31.Nf4 Kg7 32.Rfc1 (32.Rc6 Bb6+=) 32...Rbd7 33.h3 Bb8 (33...Nf5 34.Nh5 Kg6 35.Nf4 Kg7 36.R1c2=) 34.g4+= Bf4 35.Rf4 Rd1 36.Rd1 Rd1 37.Kg2 Ra1 38.Rc4 Ng8 39.Nd4 Ne7 40.Nb3 Rb1 41.Nc5 Rb6 42.Nd3 f5 (42...Rd6 43.Nf4=) 43.Ne5 (43.Rc7 Ng6+/–) 43...fg4 44.Rg4 (44.hg4 Ng6 45.Nf3 Rd6+=) 44...Ng6= 45.h4 h5 46.Rg5 Rb4 47.Ng6 fg6 48.Ra5 Rb6 49.f4 Kf6 50.Kf3 Rd6 51.Ke4 Rb6 52.Kd4 Rc6 53.e4 Kf7 54.e5 Ke7 55.Rc5 Rb6 56.Rc7 Kd8 57.Rg7 Rb4 58.Kc5 Ra4 59.Kd6 Rd4 60.Ke6 Rf4 61.Rg6 Kc7 62.Kd5 a5 63.Ra6 a4 64.e6 Rh4?? (64...Kd8 65.Ra7=) 65.Ra7 (better is 65.Ra8 Rh1 66.e7 Rd1 67.Kc4 Rc1 68.Kd4 Rd1 69.Kc3+–) 65...Kd8= 66.Kd6 Rd4 67.Ke5 Rb4 68.Kf6 Rf4 69.Kg5 Re4 70.Kf5 Rb4 71.Ra8 Ke7 72.Ra7 Ke8 73.Kf6 Rf4 74.Kg5 Re4 75.Kh5 Re6 ½–½. Pozanco Romasanta,Marc (1625) – Costa Ribalta,Andres (1770), 3rd Obert d'Escacs Llinars Del , 2009. (=1.d4 Nf6 2.b4 e6 3.a3 d5)

4.e3 b6 5.f4 Bb7 6.Nf3 Be7 7.c4 dc4 8.Bc4 0-0 9.0-0 a5 10.b5 c5 11.bc6 Nc6 12.Nc3 Rc8 13.Qe2 Qc7 14.Nb5? (14.Rd1 Rfd8 15.Nb5 Qb8=) 14...Qb8 (better 14...Nd4 15.Nbd4 Qc4 16.Qc4 Rc4-+) 15.Bb2 Rfd8 16.Rac1 h6 17.Rc2 Na7 18.Rfc1 Nb5 19.Bb5 Rc2 20.Rc2 Rc8 21.Ne5 Be4 22.Rc8 Qc8 23.Qc4 Qa8 24.Bc6 Bc6 25.Qc6 Qc6 26.Nc6 Kf8 27.Kf2 Ke8 (27...Ng4!? 28.Ke2 Nh2=+) 28.Kf3+= Kd7 29.Ne5 Ke8 30.a4 Nd7 31.Nc4 Bb4 32.e4 g6 33.g4 White plans f5 33...h5 34.gh5 gh5 35.f5 Nb8 (35...ef5!? 36.e5 Ke7+/-) 36.Kf4 ef5 (36...Nd7 37.e5+/-) 37.Kf5+- Nd7 38.Kg5 Nf6?? (better 38...Be7 39.Kh5 Nf6 40.Kg5 Ne4 41.Kf5 Nd6 42.Nd6 Bd6+-) 39.Kf5 (better 39.Kf6 Be7 40.Kf5+-) 39...Ng4 (39...Nd7 40.e5 Be7+-) 40.h3 Nf2 41.h4 Nd3 42.Ba1 (42.d5 Nb2 43.Nb2 Be7+/-) 42...Be7+/- 43.Nb6 Bh4 44.Nc4 (better 44.Bc3!?+/-) 44...Be1= 45.e5 Bg3? (better 45...h4 46.Ne3 h3=) 46.Na5 h4 47.Kg4 Nf2 (47...Nb4 48.Nc4 f6 49.Bc3+-) 48.Kf3 Nh3 49.d5 (49.Nb7!? Ng5 50.Kg4 Ne4+-) 49...Ng5 50.Kg2 Ne4 (better 50...Bf4 51.Nc6 h3 52.Kh1 Ne4+-) 51.Bd4 Nd2 52.Nc6 Ne4 (52...Nb3 53.Be3 Kd7+-) 53.a5 Be5 (53...Kd7 54.a6 Kc8 55.Nd8+-) 54.Be5 Nc5 55.Bd4 (55.Kh3 Kd7+-) 55...Nd3 (55...Na6 56.Kh3+-) 56.a6 (56.Be3 Kd7 57.a6 Kc7+-) 56...Nf4 57.Kh2 Nd5 58.a7 Nc7 59.Bb6 (better 59.Nb4 f6 60.Nd5+-) 59...Na8 60.Bd4 Kd7?? (60...Nc7 61.Nb4 Na8+-) 61.Ne5+- Ke6 62.Nf3 (better 62.Nc4 Nc7 63.Bb6 Na8+-) 62...Kd5 63.Kh3 (better 63.Bf2+-) 63...Ke4+/- 64.Kg4 h3?? (better 64...f5 65.Kh4 Kf3+=) 65.Bc5 f5 66.Kg3 f4 67.Kg4 Nc7 (67...Kd5 68.Bf2 Nc7 69.Kh3+-) 68.Nh2 (better 68.Bd6!? Na8+-) 68...Na8 (68...Kd5 69.Bb6 Na8 70.Bf2+-) 69.Bg1 (worse 69.Kh3 Kd5 70.Bf2 Kc6+-) 69...Nc7 (69...Kd5 70.Kf4 Kc6 71.Ng4+-) 70.Nf3 Na8 71.Kh3 (71.Ng5 Kd5+-) 71...Kd5?? (better 71...Kf3 72.Bh2 Ke3+=) 72.Kg4+- Kc6 73.Kf4 Kb7. Minister007 (2300) - paat90 (2315), Rated blitz game, lichess.org, 2020.

4.e3 Nbd7 5.c4 b6 6.c5 a5 7.Bb2 (7.c6 Nb8 8.b5 Bd6+=) 7...ab4= 8.ab4 Ra1 9.Ba1 bc5 10.bc5 c6 11.f4 Ne4 12.Nf3 f6 (12...Qa5 13.Nbd2=+) 13.Nbd2 Qa5 14.Bd3 e5 15.fe5 (worse 15.Be4 de4 16.Ne5 fe5-/+) 15...fe5 16.Be4 de4 17.Ne5 (better 17.Ng5 Qa3 18.Nge4 Qe3 19.Qe2+=) 17...Ne5-/+ 18.de5 Bc5 19.Qc2 0-1. Minister007 (2320) - Tranquilou (2465), Rated blitz game, lichess.org, 2020.

5.c4 a5 6.c5 Be7 7.b5 0-0 8.Nc3 Nbd7 9.Qc2 e5 10.Nf3 ed4 11.ed4 c6 12.b6 (12.Bd3 Re8 13.0-0 Nf8+/-) 12...Re8 13.Be2 Nf8 14.h3 (14.0-0 Ne4+=) 14...Bd7 (14...Ne4!?=) 15.0-0+= Qc8 16.Kh2 (16.Bd3 Qb8+/-) 16...Bf5+= 17.Bd3 Bd3 18.Qd3 Ne6 19.Bd2 Bf8 20.a4 g6 21.Rae1 Bg7 22.Ng5 Ng5 23.Bg5 Qd7 24.Bf6 Bf6 25.f4 Re1 26.Re1 Re8 27.Re5?? (better 27.Re8 Qe8 28.Qe2=) 27...Be5-/+ 28.de5 (28.fe5 f6! 29.ef6 Qf5-+) 28...Qf5 29.Qf5 gf5 30.Kg3 (30.Nd1 f6! 31.ef6 Kf7-+) 30...d4 31.Nb1 Rd8 (31...f6 32.Kf3 fe5 33.Nd2-+) 32.Kf3 Rd5 33.Ke2 (33.g4 Rc5 34.gf5 Rc4-+) 33...Rc5 34.Kd3 Rc1 35.Nd2 Rd1 (35...c5!? 36.g3-+) 36.Ke2 Ra1 37.Nb3 Ra4 38.Nc5 (38.Kd3 Ra3 39.Kc4 Rb3 40.Kb3 Kf8-+) 38...Ra2 (better 38...Rb4!? 39.g4 fg4 40.hg4-+) 39.Kd3 Rg2 (39...a4 40.e6 fe6 41.Ne6 Rg2 42.Nd4-+) 40.Nb7 (40.Kd4 Rb2 41.Ke3 Rb6-+) 40...Rb2 (better 40...a4 41.Nc5 a3 42.Nb3 Rg3 43.Kc4 Rc3 44.Kb4 c5 45.Ka4-+) 41.Na5 Rb6 42.Kd4 Rb4 43.Ke3 (43.Nc4 Rb3 44.Nd6 Rh3 45.Nf5 Kf8-+) 43...Ra4 (better 43...c5-+) 44.Nc6 Ra3 45.Kd4 (45.Ke2-+) 45...Rh3 46.Ne7 Kf8 47.Nf5 h5 48.Ke4 Ra3 (48...h4!? 49.Ne3-+) 49.Nh4 Kg8 50.Kf5 Rg3 51.Ke4 Kh7 52.Nf5 Ra3 53.Nh4 Kg7 54.Nf5 Kg6 (better 54...Kg8-+) 55.Nh4=+ Kh6 (55...Kh7 56.Nf5 Kg8 57.Nh4-+) 56.Nf5= Kg6 57.Nh4 Kg7 58.Nf5 Kf8 59.Nh4 Ke7 60.Kf5 Rg3 61.Ke4 Rg4 62.Nf5 Ke6 63.Nd4 Kd7 64.Nf3 h4 (better 64...Rg8!?-+) 65.Kf5=+ Rg6 66.Nh4 Rh6 67.Nf3 Rh3?? (better 67...Ke7=) 68.Ng5+- Rg3 69.Nf7 Ke7 70.Ng5 Rf3?? (70...Rc3 71.Kg4+-) 71.Ke4 (71.Nf3 Kf7 72.Ng5 Ke7 73.e6+-) 71...Rf1 72.f5 Re1 73.Kf4 Rf1 74.Nf3 Rf2 75.Ke3 Rf1 76.f6 (76.Ke4 Kf7+-) 76...Kf7 77.Kf4 (77.Ke2 Ra1 78.Kd3 Kg6+/-) 77...Ke8? (77...Rf2 78.Kg4 Ke6+=) 78.Ke4 (78.e6 Rf2+-) 78...Rf2?! (78...Kf7 79.Ke3 Ke6+/-) 79.Nd4 (79.e6 Re2 80.Kf5 Rf2+-) 79...Rf1?? (79...Kf7+=) 80.Kd5 (80.Ne6 Kf7 81.Nf4 Rc1+-) 80...Re1?? (better 80...Kf7=) 81.Ke6 Rd1 82.Nc6 Rd7 83.f7 (better 83.Kf5 Rd5 84.Ne7+-) 83...Rf7= 84.Nd4 Rb7 85.Nf5 Rb6 (85...Rb6 86.Nd6 Kd8=). Minister007 (2300) - reem25 (2300), Rated blitz game, lichess.org, 2020.

5.c4 dc4 6.Bc4 a5 7.b5 a4 8.f4 c5 9.Ne2 Nh5 10.Nbc3 Bd7 11.Bb2 cd4 12.Nb1 Be5 13.e4 Nc6 14.g4 Bc8 15.Qc2 Na7 16.Be6 Rb8 17.f5 Bd6 18.Kf1 fe6 19.fe6 Qd7 20.g5 Ke7 21.Nc1 Rf8 exd7 Be5 Qd1 Kxd7 22.Kg2 Bf6 0-1. Minister007 (2365) - THOR80 (2355), Rated blitz game, lichess.org, 2020.

5.f4 0-0 6.Nf3 a5 7.b5 c5 8.bc6 Nc6 9.c4 dc4 10.Bc4 b6 11.Qe2 Bb7 12.0-0 Rc8 13.Nc3 h6 (13...Bf4 14.Nb5 Bb8 15.Bd3=+) 14.Bd2 (14.Nb5 Ne7=) 14...Ne7 (14...Bf4!? 15.Nb5 Bb8=+) 15.Nb5= Bb8 16.Ne5 Ned5 17.Rac1 Qe7 18.a4 Ne4 19.Be1 Be5 20.fe5 Qg5 21.Bd5 (21.Rf3 Ba6=) 21...Bd5=+ 22.Bd2 (22.Rc7!? Rc7 23.Nc7=+) 22...Nd2 23.Qd2 Rc1 24.Rc1 Bg2! 25.Kf2? (25.Qg2 Qe3 Double attack) 25...Bd5 (25...f6 26.Rg1 fe5 27.Ke1 Qh4 28.Kd1-+) 26.Rg1? (26.Ke2 Qg2 27.Ke1 Qg1 28.Ke2 Qh2 29.Ke1 Qh1 30.Ke2 Qf3 31.Kd3 Qf5 32.Ke2 f6 33.ef6 Qf6-+) 26...Qf5 (26...Qh4 27.Kf1 f6 28.Rg3-+) 27.Ke2 (27.Ke1 f6 28.ef6 Qf6-+) 27...f6 28.Nd6 Qh5 29.Ke1 fe5 30.e4 (30.Rg3 Rf3 31.Rf3 Qf3-+ (31...Bf3?! 32.Qc2-+)) 30...Qh4 (better 30...Bb3!? 31.Rg3 Ba4 32.d5-+) 31.Rg3 Be4 32.de5 (32.Qe3 Rf4 33.de5 Bg2-+) 32...Bd5 33.Kd1 (33.Qc1-+) 33...Qa4 (better 33...Rf1 34.Kc2 Qa4 35.Kc3 Rd1 36.Qd1 Qd1-+) 34.Ke2 Bc4 35.Ke3 Qa3 36.Ke4 Qc5 37.Rg7 (37.Qc3 Bd5 38.Kd3-+) 37...Kg7 38.Qg2 Kh7 39.Qc2 Bd5 40.Kd3 Rf3 (40...Be4! 41.Ke4 Qc2 42.Ke3 Qf2 43.Ke4 Qf3 44.Kd4 Rf4 45.Ne4 Re4) 41.Kd2-+ Qc2 42.Kc2 Rf2 43.Kd3 (43.Kc3 Rh2 44.Ne8 a4 45.Nf6 Kg6-+) 43...Rh2 44.Kd4 a4 45.Nc8 a3 46.Nb6 a2 47.Nd5 (47.Ke3 a1Q 48.Nd5 Qa3 49.Ke4 Rh4 50.Nf4 h5 51.Kd4 Rf4) 47...ed5 (47...a1Q 48.Nc3 Rh4 49.Kd3 Rh3 50.Kc4 Rc3 51.Kd4 Qa5 52.Ke4 Qb4) 48.Kd5 a1Q 49.e6 (49.Ke6 Re2 50.Kd7 Qd1 51.Kc7 Rc2 52.Kb8 Qb1 53.Ka7 Ra2) 49...Re2 (49...Rd2 50.Ke4 Qd4 51.Kf3 Rf2 52.Kg3 Qf4 53.Kh3 Rh2) 50.Kd6 Qa3 (50...Qd1 51.Kc6 Rc2 52.Kb5 Qb1 53.Ka4 Ra2) 51.Kc7 (51.Kd7 Rd2 52.Kc6 Qc3 53.Kb5 Rb2 54.Ka4 Qb4) 51...Re6 52.Kb8 (52.Kb7 Qf3 53.Kc8 Re7 54.Kd8 Qf8) 52…Qe7 (52...Qe7 53.Kc8 Qf7 54.Kd8 Re8; 52...Qf8 53.Kb7 Qf7 54.Kc8 Re8) 0-1. Minister007 (2305) - kumahaurangwe (2350), Rated blitz game, lichess.org, 2020.

5.f4 0-0 6.Nf3 Nbd7 7.c4 b6 8.c5 Be7 9.Nc3 a5 10.Bd2 ab4 11.ab4 Ra1 12.Qa1 c6 13.Bd3 bc5 14.bc5 Ne4? (better 14...Qc7+=) 15.Ne4+- de4 16.Be4 Bb7 (16...Qc7 17.Ba5 Qb7 18.Qa4+-) 17.0-0 (17.Bh7 Kh7 18.Qb1 Kh6 19.Qb7 Qc8 20.Qc8 Rc8+-) 17...f5 18.Bd3 (18.Bc2 Nf6+-) 18...Nf6 (better 18...Nc5!? 19.Qa7 Nd3 20.Qb7 c5+-) 19.Bc4 Nd5 20.Ne5 g5 21.g3 (21.Rb1 Qa8+-) 21...gf4 22.ef4 Nf6? (better 22...Bf6+-) 23.Be6 Kg7 24.Bf5 (24.Qb2!? Ba8+-) 24...Bc5 25.dc5 Qd2 26.Ng4 (better 26.Rb1 Bc8 27.Qa7 Kh8 28.Qe7 Qd4 29.Kf1 Ba6 30.Kg2 Qd5 31.Kh3+-) 26...h5 (26...Qd5 27.Qe5 Qe5 28.Ne5 Bc8 29.Bc8 Rc8+-) 27.Nf6 (27.Rd1 Qd1 28.Qd1 hg4+-) 27...Rf6 28.Rd1 Qe3 29.Kg2 Qe2 30.Kh3 Qe7 (30...Qd1 31.Qd1 Rf5 32.Qd7 Rf7 33.Qd4 Kg8+-) 31.Rd7 ½-½. Minister007 (2305) - BobFudraiser (2485), Rated blitz game, lichess.org, 2020.

5.f4 c6 6.Nf3 a5 7.b5 cb5 8.Bb5 Bd7 9.Bd7 Nbd7 10.Ne5 0-0 11.0-0 Ne4 12.Nd2 f5 13.Ne4 fe4 (worse 13...de4 14.c4+=) 14.Nd7 Qd7 15.a4 Rac8 16.Ba3 Rc3 17.Bd6 Qd6 18.Rb1 Re3 19.Rb7 Rf4 20.Rf4 Qf4 21.Qf1?? (better 21.Ra7 Qb8 22.Ra5=+) 21...Qf1-+ 22.Kf1 Ra3 23.Re7 Ra4 24.Re6 (24.c3 Ra1 25.Kf2 a4 26.Re6 a3-+) 24...Rd4 25.Ke2 Rc4 26.Kd2 Kf7 27.Ra6 a4 28.Rd6 (28.c3-+) 28...d4 29.g4 Ke7 30.Ra6 e3 31.Kd3 (31.Kd1-+) 31...Rc3 32.Kd4 e2 (32...e2 33.Ra7 Ke6 34.Kc3 e1Q 35.Kc4 Qe4 36.Kb5 Qd5 37.Kb6 a3-+) 0-1. Minister007 (2325) - Ahmadalrahely9899 (2310), Rated blitz game, lichess.org, 2020.

5.Nc3 0-0 6.Nf3 a5 7.b5 c5=.

5.Nc3 0-0 6.Nf3 Bd7=.

5.Nc3 0-0 6.g3 b6 7.Bg2 Bb7 8.Bb2 c5 9.dc5 bc5 10.bc5 Bc5 11.Nge2 Nc6 12.0-0 Ne7 (12...Rb8!?+=) 13.Na4= Bb6 (13...Bd6 14.Bf6 gf6 15.c4=) 14.Bf6+= gf6 15.Nd4 Bd4 (15...e5 16.Nb6 ab6 17.Qg4 Kh8 18.Nb5+=) 16.Qd4 (16.ed4 Ba6 17.Re1 Bc4+/–) 16...Nf5+= 17.Qb4 Rb8 18.Rfd1 (18.Nc5 Bc6 19.Qg4 Kh8+=) 18...Bc6 19.Qc5?? (better is 19.Qg4 Kh8 20.Nc3=) 19...Ba4-+ 20.Rdc1 (20.e4 Qe7 21.Qa5 Bc2 22.ef5 Bd1 23.Rd1 Rb3-+) 20...Qd7 21.c3 (21.Qc3 d4 22.Qe1 Rfd8-+) 21...Bb3 (21...Rb5 22.Qb5 Bb5 23.e4 de4 24.Be4-+) 22.Rab1 (22.Qa5-+) 22...Rb5 23.Qb5 Qb5 24.Bf1 (24.e4 Nd6 25.ed5 ed5-+) 24...Qa4 25.Bd3 Bc4 26.Bf5 ef5 27.Ra1 (27.Rd1 Qa3 28.Ra1 Qc5-+) 27...Rb8 28.Rcb1 (28.Kg2 Rb3-+) 28...Rb1 29.Rb1 Qa3 30.Rb8 (30.h3 Qc3 31.Kh2 d4 32.Rb8 Kg7-+) 30...Kg7 31.Rb7 (31.Rb1 Qc3 32.Rf1 d4 33.ed4 f4-+) 31...Be2 (31...Qc1 32.Kg2 Qf1 33.Kf3 Qh1 34.Kf4 Qe4) 32.Rc7 (32.Rb1-+) 32...Qc1 33.Kg2 Qf1 0–1. pillsbury (2165) – tomy (2470), net–chess.com, 2016.

5.Nc3 0-0 6.h3 b6 7.Nf3 c5 8.b5 (8.dc5 bc5 9.bc5 Bc5+=) 8...Nbd7 9.Be2 Bb7 10.Bb2 Qc7 11.0-0 Ne8 12.a4 Nd6 Black plans c4 13.Re1 Nf6 (13...Rfc8 14.a5 ba5 15.dc5 Nc5 16.Qd4-/+) 14.Ne5 (14.dc5 Qc5 15.Qd4 Qc7=) 14...Rac8 15.Rc1 c4 16.Ba3 Nde4 17.Ne4 Ne4 (17...Ba3 18.Nf6 gf6 19.Ra1+=) 18.Be7= Qe7 19.c3 f6 20.Nf3 Ra8 21.Nh2 (21.Nd2 f5+=) 21...a6-/+ 22.Bf3 Nd6 23.Rb1 (23.ba6 Ra6 24.Rb1 Rfa8-/+) 23...ab5 24.ab5 Ra5 25.e4 (25.Ng4!?-/+) 25...de4-+ (25...Nb5?! 26.Qc1 Qd7 27.ed5 Bd5 28.Bd5 ed5 29.Qb2-/+; 25...Ne4?! 26.Be4 de4 27.Nf1-/+) 26.Be2 Bd5 27.Qc1 Qd7 (worse is 27...Rb5 28.Rb5 Nb5 29.Qb2-/+) 28.Ng4 Rb5 29.Ne3 Rb1 30.Qb1 b5 31.Qb4 Qc6 (31...Ra8 32.Bg4 f5 33.Bd1-+) 32.Ra1 h6 33.Bg4 f5 34.Be2 Nc8 (34...f4 35.Ng4-+) 35.Ra5-/+ Nd6 36.Nd5?? (36.Ra1 f4 37.Ng4-+) 36...ed5-+ 37.Kh1 Kf7 (37...f4 38.Qc5 Qc5 39.dc5-+) 38.Bh5 g6 39.Be2 Rb8 40.Ra7 Rb7 41.Rb7 Nb7 42.Bd1 h5 43.h4 (43.Kg1 f4-+) 43...Qa6 44.Qb2 Qa5 45.g3 (45.Kh2 Nd6-+) 45...Nd8 46.Kg2 Nc6 47.Bc2? (47.Qc1-+) 47...b4 48.cb4 (48.Qc1 Qa3 49.Qh6 Qc3 50.Qh7 Kf6 51.Qh8 Ke6 52.Qg8 Kd6-+) 48...Qb4 (worse is 48...Nb4 49.Bd1-+) 49.Qa2 Qb6 (49...Ne7 50.Kf1-+) 50.Qa4 (50.Qa8 f4 51.gf4 Ne7-+) 50...Ke7 (better is 50...Nd4 51.Qd7 Kf6 52.Ba4-+) 51.Qa3 Kf7 52.Qc5?? (52.Qa4 Nd4 53.Qd7 Kf6 54.Ba4-+) 52...Qc5-+ 53.dc5 d4 54.Kf1 (54.Ba4 c3 55.Kf1 Ke6 56.Bb3 Ke5-+) 54...Ke6 55.Ba4 Kd5 56.Bc6 (56.Ke2-+) 56...Kc6 57.Ke2 Kc5 58.Kd2 c3 59.Kc2 Kc4 60.Kc1 d3 61.Kd1 (61.Kb1 c2 62.Kb2 Kb4 63.g4 fg4 64.f4 g3 65.Ka2 d2 66.f5 d1Q 67.fg6 Qb1) 61...Kb3 Black prepares the advance c2 (61...c2 62.Kd2 Kd4 63.g4 fg4 64.f3 e3 65.Kc1 Kc3 66.fg4 d2) 62.Kc1-+ c2 (62...c2 63.Kd2 Kb2 64.Ke3 c1Q 65.Kd4 d2 66.Ke5 d1Q 67.Kf6 Qd6 68.Kg7 Qe7 69.Kg6 Qe6 70.Kh5 Qch6) 0–1. pillsbury – rhand, net–chess.com, 2018.

5.c4 0-0 6.Nc3 b6 7.c5 a5 8.Bd2 Ne4 9.Ne4 de4 10.Ne2 e5 11.de5 ab4 12.cb6 (better 12.ab4!? Ra1 13.Qa1 bc5 14.b5=) 12...ba3-/+ 13.bc7 (better 13.Qc2!? cb6 14.Qe4=+) 13...Qc7-+ 14.Bc3 Ba6 15.Bd4?? (15.Rc1!?-/+) 15...Nc6 (better 15...Bb4 16.Qd2 Bd2 17.Kd2 Nc6-+) 16.f4 ef3! (worse 16...Nd4 17.Nd4 Qc3 18.Kf2 Qb2 19.Kg3-+) 17.gf3 Ne5 18.Ng3 Rfd8 19.Kf2 Bb7 20.Be2 Nc6 21.Nf5 (21.Qc2 Qd7 22.Bb6 Rdc8-+) 21...Bf6 (21...Nd4!? 22.Nd4 Bh4 23.Kg2-+) 22.Qc2 (better 22.Qc1 Bd4 23.Nd4-+) 22...Qd7?? (better 22...Bd4 23.Nd4 Qd6-+) 23.Bf6=+ Nb4?? (23...gf6 24.Rhd1 Qc7 25.Rd8 Qd8+=) 24.Qb1 (better 24.Rhg1 g6 25.Qc5+-) 24...gf6 (24...Nc2 25.Nh6 Kh8+-) 25.Rg1 (25.Qg1 Kf8 26.Qg7 Ke8 27.Qg8) 25...Kh8+- 26.Rg7?? (better 26.Qb4 Bf3 27.Nh6+- (27.Bf3?! Qf5 28.Ra2 Rac8+-; 27.Kf3?! Qf5 28.Qf4 Qf4 29.ef4 Rd2+/-)) 26...Nd5 27.Qg1?? (27.Bd3 Nf4! 28.ef4 Qd3 29.Qd3 Rd3 30.Rf7 Rf3 31.Ke2 Re8 32.Re7 Re7 33.Ne7-+) 27...Qf5-+ 28.Rf7 (28.e4 Qe5 29.Ra2 Qd4 30.Kg2 Nc3 31.Qd4 Rd4 32.Ra3 Ra3 33.Rf7 Rb3 34.Rb7 Rb7-+) 28...Ne3 (better 28...Rg8 29.Qc1 Qh3 30.Rb7 Qh2 31.Ke1 Qg1 32.Bf1 Rg2 33.Rh7 Kh7-+) 29.Qg7 1-0. Minister007 (2305) - nickandr (2300), Rated blitz game, lichess.org, 2020.

5.c4 0-0 6.Nc3 dc4 7.Bc4 a5 8.b5 b6 9.f4 (9.Qf3!? c6 10.Nge2+=) 9...Bb7 10.Nf3 Nd5 11.Bd2 Nd7 12.0-0 N7f6 13.Qe2 Qd7 14.Ne5 Qd8 15.g3 Nc3 16.Bc3 Ne4 17.Bb2 Bd6 18.Rfd1 Qe7 19.a4 Be5 20.de5 Rfd8 21.Ba3 Qe8 22.Qc2 c5 23.Bd3 f5 24.Bc4 (24.ef6!? Nf6 25.Bb2=) 24...Bd5=+ 25.Qb3 Qf7 26.Rd3 Ra7 27.Rad1 Rad7 28.Bb2 h5 29.Bc3 h4 (worse 29...Nc3 A) worse 30.Rc3 Bc4 31.Rd7 Qd7 (31...Bb3?! 32.Rd8 Kh7 33.Rb3=) 32.Qc4 Qd1 33.Qf1 Qa4-+; B) 30.Qc3 h4 31.Bd5 (31.gh4?? Qg6 32.Kf1 Qg2 33.Ke1 Qh1 34.Kd2 Bc4 35.Rh1 Rd3 36.Kc2 Rc3 37.Kc3 Be2-+) 31...Rd5 32.Rd5 ed5 33.gh4 Qg6 34.Kh1=) 30.Be1 hg3 31.hg3 Kf8 32.g4 Qg6 33.g5 Qh5 34.Bd5 Qg4 35.Kf1 ed5 36.Rd5 (36.e6 Rd6 37.Qb2 Qf3 38.Kg1 Re6 39.Qg2 Qg2 40.Kg2-+) 36...Qf3 (36...Qd1 37.Rd1 Rd1 38.Qe6+-) 37.Kg1 Rd5 (better 37...Qe2 38.Rd7 Rd7-+) 38.Rd5 Rd5 39.Qd5 Qe3 40.Kg2 Qe2 (40...Qe1?! 41.Qd8 Kf7 42.Qd7 Kg6 43.Qe8 Kh7 44.Qh5 Kg8 45.Qe8 Kh7 46.Qh5 Kg8 47.Qe8 Kh7=) 41.Kh3 Qf3 (41...Qe1?! 42.Qd8 Kf7 43.Qd7 Kg8 44.Qe8 Kh7 45.Qh5 Kg8 46.Qe8 Kh7 47.Qh5 Kg8 48.Qe8=) 42.Kh2 Qf4 43.Kh3?? (43.Kg2 Qg5 44.Kf1-+) 43...Qg4 (43...Qf1 44.Kh2 Qe1 45.Qd8 Kf7 46.Qd5 Kg6 47.Qd3 Qf2 48.Kh1-+) 44.Kh2 Qh5 (44...Qe2 45.Kh3 Qe1 46.Qd8 Kf7 47.Qd7 Kg6 48.Qe6 Kg5 49.Qe7 Kf4 50.Qh4 Qh4 51.Kh4 Ke5 52.Kh3 g5 53.Kh2 c4 54.Kg1 c3 55.Kf1 c2 56.Kg1 c1Q 57.Kg2 Qd2 58.Kh1 Qe1 59.Kg2 Qf2 60.Kh3 g4) 45.Kg2?? (45.Kg1 Qg5 46.Kf1 Qf4 47.Kg2 Qg4 48.Kf1 Qf3 49.Kg1 Qe2 50.Qd8 Kf7-+) 45...Qg5 (45...Qe2 46.Kh3 Qe1 47.Qd8 Kf7 48.Qd7 Kg6 49.Qe8 Kg5 50.Qe7 Kf4 51.Qh4 Qh4 52.Kh4 Ke5 53.Kh5 g5 54.Kg6 c4 55.Kg7 c3 56.Kg8 c2 57.Kf7 c1Q 58.Kg7 Qc7 59.Kg6 g4 60.Kh6 Kf6 61.Kh5 Qh2) 46.Kf3 (46.Kf1 Qf4 47.Kg2 Qg4 48.Kf1 Qf3 49.Kg1-+) 46...Qg4 47.Ke3 Qh3 (better 47...f4 48.Kd3 Qf3 49.Kc4 Qe2 50.Qd3 Qe1 51.Qd8 Kf7 52.Qb6 Qb4 53.Kd5 Nf6 54.ef6 Qd4 55.Kc6 Qf6 56.Kc5 Qb6 57.Kb6 f3 58.Ka5 f2-+) 48.Ke2 Qg2 49.Kd1 (49.Ke3 f4 50.Kf4 Qg5 51.Kf3 Qf5 52.Ke3 Qh3 53.Ke2 Qg4 54.Ke3 Ng5-/+) 49...Qb2 (better 49...Nf2 50.Ke2 Qd5 51.Kf2 Qe5 52.Ba5 Qf4 53.Ke2 ba5-+) 50.Qd8-/+ Kf7 51.Qd7? (better 51.e6 Ke6 52.Qe8 Kf6 53.Bh4 Ng5 54.Qd8 Ke5 55.Bg5 Qa1 56.Kd2 Qa2 57.Ke1 Qa4 58.Qb6 Qe4 59.Kf2 Qc2 60.Kf3=) 51...Kg6-+ 52.Qe6 (52.Qd8-+) 52...Kg5 53.Qf7 (53.Qb6 Kf4 54.Qe6 Qb1 55.Ke2 Qc2 56.Kf1 Qd3 57.Kg1 Qe2-+) 53...Qb1 (53...Kf4!? 54.Qc4 Ke5 55.Qc2 Qc2 56.Kc2-+) 54.Ke2 Qc2 55.Kf1 Ng3 (better 55...Qd3 56.Kg1 Qe3 57.Kf1 Qf4 58.Kg2 Qg4 59.Kf1-+) 56.Kg1?? (56.Bg3 Kg4 57.Bf2= (57.Qg7? Kf3 58.Qb7 Kg3-+)) 56...Qd1?? (better 56...Ne2 57.Kf1 Nd4 58.Qg7 Kf4 59.Qg3 Ke4 60.Qh4 Ke5 61.Qe7 Kd5 62.Qd8 Ke4 63.Qh4 f4 64.Qh1 Kd3 65.Qh7 Ke3 66.Qh3 Nf3 67.Qe6 Qe4 68.Bf2 Kd3 69.Qb3 Kd2 70.Qa2 Qc2-+) 57.Kf2?? (57.Qg7 Kh5 58.Qg3 Qa4 59.Qh4 Qh4 60.Bh4=) 57...Qe2 (better 57...Kh4 58.Qc4 Kh3-+) 58.Kg3 Qe1 (58...Qe1 59.Kf3 Qf1 60.Kg3 f4 61.Kh2 Qe2 62.Kg1 Qe5-+) 0-1. Minister007 (2305) - caeveman (2370), Rated blitz game, lichess.org, 2020.

5.Nbd2 0-0 6.Bb2 (6.c4 Nbd7=) 6...Nbd7 (6...a5 7.b5=+) 7.c4= c6 (7...a5 8.c5 Be7 9.e3=+) 8.e3 Qe7 (8...Re8 9.Bd3=) 9.Ne5 (9.Bd3 b6=) 9...Ne4 (9...Rd8 10.Bd3=) 10.Ne4 de4 11.c5 Bc7 12.f4 (12.Qc2 Ne5 13.de5 Qh4+=) 12...f6 (12...ef3 13.Nf3 e5 14.Qe2=+) 13.Nd7= Bd7 14.Qc2 e5 (14...f5 15.Be2+=) 15.Bc4 Kh8 16.d5 (16.fe5 Be6 17.Be6 Qe6+/–) 16...cd5= 17.Bd5 ef4 18.Qe4 (< 18.Be4 Bc6 19.Bc6 A) < 19...Qe3 20.Kf1 Rad8 A1) 21.Bb7? Rd2 22.Qd2 Qd2 23.Bf6 Qd3 24.Kf2 Rf6-+ (24...gf6?! 25.Rhd1 Qe3 26.Kf1-+); A2) 21.Re1+/–; B) 19...fe3?? 20.Bb7 Rad8 21.Qe4+–; C) 19...bc6=; 18.Bb7?! Rae8=) 18...Qe4 19.Be4 Rab8 (19...Bc6 20.Bc6 bc6 21.e4+=) 20.ef4 (20.0-0-0 Bg4 21.Rd3 Rfe8=+) 20...Rfe8= 21.0-0-0 Bf4 22.Kb1 Bg4 ½–½. Schulz,Hans_Juergen – Milde,Lars, TT–08 ETC, 2003.

5.Nbd2 a5 6.b5=+.

5.e3 a5 6.b5=+.

5.e3 Nbd7 6.c4= dc4 (6...0-0 7.c5 Be7 8.Bd3=) 7.Bc4 0-0 8.Qc2 (8.0-0 a5 9.b5 e5=) 8...e5 9.Nbd2 Qe7 (9...a5 10.b5=) 10.Be2 (10.Ne4 Ne4 11.Qe4 Nf6=+) 10...Re8 (10...a5 11.Bb2=+) 11.de5 (11.Nc4 e4 12.Nfd2 Nd5=) 11...Ne5 12.Bb2 Bg4 (12...a5 13.Ne5 Be5 14.0-0=) 13.0-0 Rad8 (13...Rac8 14.Rad1=) 14.b5 (14.Rfd1 Nf3 15.Nf3 Ne4=) 14...c6 (14...Nd5 15.Rfd1=) 15.bc6 (15.Qa4 Bb8 16.Rad1 cb5 17.Bb5 Bf3 18.Nf3 Nf3 19.gf3 Rf8=) 15...Nc6 16.Bb5 (16.Bd3 h6=) 16...Rc8=+ 17.Qa4 Bf3 (17...Bd7 18.Bc6 Bc6 19.Qa7=) 18.Nf3 a6 19.Be2 (19.Bd3 Ne5 20.Be5 Be5 21.Ne5 Qe5=) 19...Ne4 20.Rad1 Rc7 21.Bd3 Nc5 22.Qg4 Be5 23.Ne5 Ne5 24.Be5 Qe5= 25.Qh4 Nd3 26.Rd3 Rc3 27.Rd8 Ra3 28.Rfd1 b6 29.h3 f6 30.Qc4 Kf8 31.Re8 Ke8? 32.Qg8+– (32...Ke7 33.Qg7 Ke8 34.Qg8 Ke7 35.Qd8 Kf7 36.Rd7 Ke6 37.Qe8 Kf5 38.g4 Ke4 39.Qa8 Qd5 40.Qd5) 1–0. Winiger,Albert – Schulz,Hans_Juergen, TT–07 ETC, 2003.

5.Bg5 0-0=+.

5.Bg5 h6 6.Bf6 Qf6=.

5.Nc3 0-0 6.Nf3=.

5.Nc3 a5 6.b5 c6 (6...Nbd7 7.e3=) 7.bc6 (7.e3 0-0=) 7...Nc6 8.Bf6 (8.e3 h6 9.Bf4 0-0=) 8...Bf6+= 9.e3 0-0 (9...e5 10.Nf3+=) 10.Bb5 (10.Qf3 a4+=) 10...Qc7 (better is 10...e5 11.de5 Be5-/+) 11.Nf3? (better is 11.Qd3+=) 11...Nd4-+ 12.Nd4 Qc3 13.Ke2 e5 14.Nb3 d4 15.ed4 ed4 16.Bd3 b6 17.Re1 Bb7 18.Kf1 Rfe8 19.Re8 Re8 20.Qh5 g6 21.Qd1 Qc6 22.f3 Qd6 23.Kg1 Be5 24.h3 Bf4 25.a4 Be3 26.Kh1 Qg3 27.Qe2?? Bf4 28.Qe8 Kg7 29.Kg1 Bf3 30.Bf1 Be3 31.Kh1 Qh3 0–1. pillsbury (2060) – bgage (2355), net–chess.com, 2008.

5.e3= 0-0 6.Nf3 h6 7.Bf4 (7.Bf6 Bf6 8.c4 a5=) 7...c6 (7...Nbd7 8.Bd3=) 8.Ne5 (8.Bd3 a5 9.Nbd2 Na6=) 8...Nbd7 9.Qd3 (better is 9.Nd2=) 9...b5?? (better is 9...Nh5+=) 10.Nd2?? (better is 10.Nc6 Qe8 11.Qb5+–) a6?? (10...a6 11.Nc6 Qe8+/–; better is 10...Ne5 11.Be5 a5+=). mferzman – composite, ChessWorld.net, 2008.

5.e3= Nbd7 6.Nf3=.

5.f3 0-0 6.h4 (6.e3!?=+) 6...h6-/+ 7.Bf4 b6 (7...Nh5 8.Bh2-+) 8.Nh3 Bd6 (8...Nh5 9.g3-/+) 9.Qd2 c5 10.c3 Ba6 11.e3 (11.g4 Bf4 12.Nf4 Nfd7=+) 11...Bf4 12.Nf4 Bf1 13.Kf1 cd4 14.cd4 Nbd7 15.Nc3 Rc8 16.Rc1 (16.g4 Ne8=) 16...Rc4 17.Qe1 Qc7 18.Nfe2 Rc8 19.Kf2 a6 20.g4 Nf8 (20...Nh7!?=+) 21.g5= hg5 22.hg5 N6d7 23.Qd2 Ng6 24.Rh3 b5 25.f4 Qc6 26.Rch1? (better 26.Ke1=) 26...Rc3-+ 27.Nc3 Qc3 28.Qc3 Rc3 29.Rf3 Ra3 30.f5 (30.Rc1 Rb3 31.f5 Ngf8-+) 30...ef5 31.Rf5 Nb6 (better 31...Ne7 32.Rf3-+) 32.Rh3? (32.Rc1 Ra2 33.Kg1-+) 32...Rb3 33.Rhf3 (33.Rh1 Rb2 34.Kg3 Rb4-+) 33...Nh4 (33...Rb4?! 34.Rf7 Rb2 35.Kg1 Rb1 36.Kh2-+) 34.g6 (34.Rf7 Nf3 35.Rf3 Rb4-+) 34...Nf5 35.gf7 Kf7 36.Rf5 Kg6 37.Re5 Kf7 (37...Kf6 38.e4 de4 39.Re4-+) 38.Kf3?? (38.Rf5 Ke7 39.Re5 Kf6 40.e4 de4 41.Re4 Rb4 42.Rf4 Kg5 43.Kf3-+) 38...Rb4-+ 39.Kf4 (39.Rf5 Ke6 40.Re5 Kf6-+) 39...a5 40.Rf5 Kg8 41.Re5 Rc4 (41...a4 42.Rh5-+) 42.Re8 Kf7 43.Rb8 Rc6 44.Rb7 Kg6 45.Ra7 (45.e4 de4 46.Ke4 b4-+) 45...a4 46.e4 de4 47.Ke4 Kf6 48.Ra5 b4 49.Rf5 Kg6 50.Rc5 (50.Rf1-+) 50...Rc5 51.dc5 Na8 (better 51...b3 52.Kd3 b2 53.Kc2-+) 52.c6 (52.Kd3 Kf6 53.Kc4-+) 52...a3 53.Kd3 a2 (53...a2 54.Kc4 a1Q 55.Kb4 Qd4 56.Kb3 Qc5-+) 0-1. jhubbard – amikhlin, net-chess.com, 2020. (=1.d4 e6 2.a3 d5 3.b4 Nf6)

5.Nf3 0-0 6.Nbd2 b5 7.e3 c6 8.Bd3 h6 9.Bf6 Bf6 10.0-0 Nd7 11.a4 ba4 12.c4 Bb7 13.Ra4 a5 14.cd5 ed5 15.Qc2 Qc7 16.ba5 Ra5 17.Ra5 Qa5 18.Bh7 Kh8 0–1. Waller – Zygoto, playchess.de, 2002. (=1.d4 Nf6 2.b4 e6 3.a3 d5)

5.Nf3 0-0 6.e3 h6 7.Bh4 a5 8.c3 (8.b5!?=) 8...ab4-/+ 9.cb4 (9.Bf6!? gf6 10.Qb3+=) 9...Bb4! 10.Nbd2 (10.ab4 Ra1) 10...Ra3-+ 11.Be2 (11.Ra3 Ba3 12.Bd3 Na6-+) 11...Bd2 12.Nd2-/+ Ra1 13.Qa1 Nbd7 14.0-0 c6 15.f3 Qe8 16.e4-/+ Nh7 17.e5 b6 18.Qa7 c5 19.Bb5-/+ f6 20.Bd7 Qd7 21.dc5?? Qa7-+ 22.cb6 Qb6 23.Kh1 fe5 24.Rb1 Qd4 25.Nf1 Qh4 0–1. rodnel – tomy (2260), net–chess.com, 2006.

4.Nc3 0-0 5.Nf3 Nc6 6.b5+= Ne7? 7.e4+– Ng6 8.e5 Be5 9.de5 Nd5 10.Nd5 ed5 11.Qd5 c6 12.Qd6 Qe7 13.Qe7 Ne7 14.Bd2 Nf5 15.0-0-0 a6 16.ba6 ba6 17.Bd3 Ne7 18.Rhe1 Ng6 19.h4 Ne7 20.c4 a5 21.Kc2 a4 22.Rb1 Ba6 23.h5 h6 24.Bb4 Rae8 25.Bd6 f5 26.ef6! gf6 27.Re7 Re7 28.Be7 Rf7 29.Rb8 Kg7 30.Bd6 f5 31.Be5 Kh7 32.Rh8# 1–0. Marram – Omer Faruk Cerrah, internet, 2010.

4.Nd2 0-0 5.Ngf3 Nc6 6.Bb2 b6 7.e3 a5 8.b5 Na7 9.Bd3 c6 10.c4 Bb7 11.0-0 Rc8 12.bc6 Nc6 13.e4 Bf4 14.e5 Ng4 15.h3 Nh6 16.Qc2 Kh8 17.Ne4 Nf5 18.g3 Bh6 19.Rfe1 Nce7 20.c5 Ng6 21.Rab1 bc5 22.dc5 Qe7 23.Red1 Rfd8 24.a4 Be4 25.Be4 Qc5 26.Qc5 Rc5 27.Ba3 Rc4 28.Rd7 Re8 29.Bd3 Ra4 30.Rb3 Kg8 31.Bb5 Re4 32.Rbd3 Rf8 33.Bf8 Nf8 34.Rb7 Rb4 35.g4 Ne7 36.g5 Bg5 37.Ng5 Nd5 38.Ra3 Nf4 39.Kh2 f6 40.Nf3 Rb2 41.Ra5 Nh5 42.Kg2 Nf4 43.Kg3 Ne2 44.Kh2 Nc3 45.Kg1 Ne2 46.Kf1 Nf4 47.Raa7 fe5 48.Rg7 Kh8 49.Rgf7 Kg8 50.Bc4 Rb4 51.Ba2 h5 52.Ne5 Rb5 53.Rg7 Kh8 54.Rh7 Nh7= 55.Nf7 Kg8 56.Bc4?? Rb1# 0–1. Shak – Lyubimov (2330), ICS rated blitz match, 1998.

4.Bb2 a5=+ 5.c3 ab4 6.cb4 0-0 7.e3 b6 8.Nf3 d5 9.Nc3 c5 10.bc5 bc5 11.Bb5 Bd7 12.a4 c4 13.Ne5 Qc7 14.Nd7 Nbd7 15.0-0 Bb4 16.h3 Rfc8 17.Qc2 Nb8 18.Rfb1 Nc6 19.Ra2 Na7 20.f3 Rcb8 21.Ba3 Bc3 (< 21...Nb5 22.Nb5 (22.Bb4?! Nc3 23.Qc3 Qg3=+; < 22.Rb4 Na3 23.Rb8 Qb8 24.Ra3 Qg3=+) 22...Rb5 23.ab5 (< 23.Bb4 Rbb8=+) 23...Ba3 24.Rba1+/–) 22.Qc3 Nb5 23.ab5 (< 23.Rb5 Ra4 24.Rb8 Qb8-+) 23...Qa5 24.Qb2 (24.Qa5!? Ra5 25.Bd6 Ra2 26.Bb8=) 24...Nd7=+ 25.Raa1 c3 (25...Qb6 26.Be7=+) 26.Qc2 Rc8 27.Rb3 Nb6 28.Rc1 Nc4 29.Qc3 Rcb8 30.Qa5 (30.Be7!?+=) 30...Ra5= 31.Bc5 Rbb5 32.Rb5 Rb5 33.Ra1 h5 34.Re1 f5 35.Re2 g5 36.Kf2 Kf7 37.e4 Rb2 38.Rb2 Nb2 39.Ke2 Nc4 40.Kd3 g4 (40...h4 41.Bb4=) 41.e5 gh3 42.gh3 f4 43.Bb4 Kg6 44.Be7 Kf5 45.h4 Ne3 46.Bg5 ½–½. Klemens,Leszek – Fournier,Frederic, corr ICCF TT6/02/2, 2002.

4.Bb2 b6 5.Nd2 Bb7 (5...0-0 6.Ngf3+=) 6.c4 (6.Ngf3 0-0=) 6...d6 (6...0-0 7.Ngf3+=) 7.Ngf3= Nbd7 8.Qc2 (8.e3 e5+=) 8...c5 9.dc5 (9.g3 g5 10.Rg1 h6=) 9...dc5 10.b5 Qc7 11.e3 (11.g3 0-0=) 11...Bd6+= 12.h3 Ne5 13.Be2 Rd8 14.Rd1 0-0 15.0-0 Nf3 16.Bf3+= Bf3 17.Nf3 Kh8 18.Rd2 h6 19.Rfd1 Rd7 20.g4 Rfd8+= 21.Bf6 gf6 22.Kf1 Qb7 23.Ke2 Bb8 24.Rd7 Rd7 25.Rd7 Qd7 26.Qe4 Qc8 27.a4 Kg7 28.Nd2 Qh8 29.f4 h5 30.f5 e5 31.Nf3 Bd6 32.g5+/– fg5 33.Ng5 Qd8 34.h4 Qe7?? 35.Qf3 Kh6?? 36.f6 e4 37.Qf5 Qf6 38.Qf6# 1–0. Kruchinin,Anatoly V (2015) – Mikhailov,Dmitry, Vladimir op–B, 2004.

4.Bb2 b6 5.e3= Bb7 6.Nf3 0-0 7.Be2 c5 8.b5 Ne4 (8...a6 9.0-0=) 9.0-0 Bf6 10.c4 d5 11.Nbd2 (11.Nc3 Nc3 12.Bc3 a6=) 11...dc4 (11...Nd2 12.Nd2 a6 13.cd5 ed5 14.Qc2=) 12.Nc4 Qc7 (12...a6 13.ba6 Bd5 14.Qc2 cd4 15.Bd4 Bd4 16.Nd4 Na6 17.Rac1=) 13.Rc1 Nd7 14.Qd3 (14.dc5 bc5 15.Bf6 Ndf6+=) 14...Rac8 (14...a6 15.ba6 Ra6 16.Ncd2 Nd2 17.Qd2=) 15.Rfd1 (15.Nfe5 Bd5=) 15...Rfd8 (15...Bd5 16.Qc2=) 16.Qb3 (16.Nfd2 Nd2 17.Nd2 Qb8+=) 16...Bd5 17.a4 (17.Qc2 cd4 18.Nd4 Qb7=) 17...Nd6 18.Nfd2 (18.Qa3 Nc4 19.Bc4 Bf3 20.gf3 Qb8=) 18...e5 (18...cd4 19.Bd4 Bd4 20.ed4=+) 19.Qd3 (19.de5 Ne5 20.Qc2 Ndc4 21.Nc4 Bc4 22.Bc4 Ng4=) 19...e4 (19...Nc4 20.Nc4 ed4 21.ed4=) 20.Qb1 Re8 (20...Be7 21.Qa1 f6 22.f3=) 21.dc5+= Nc4 (better is 21...bc5 22.Bf6 Nf6=) 22.Bc4 Bb2 23.Qb2 (23.Bd5?! Bc1 24.Rc1 Nc5 25.Be4 Qd8 26.Bh7 Kh8=+) 23...Bc4 24.Nc4 (24.Rc4?! Nc5 25.Rdc1 Rcd8=) 24...Nc5 25.Nd6 Nd3? (better is 25...Rf8 26.Nc8 Rc8+–) 26.Qg7!! (26.Nc8?! Nb2 27.Rc7 Nd1+–) 26...Kg7 27.Rc7 Rcd8 (27...Ra8 28.Ne8 Re8 29.Ra7+–) 28.Ne8 (28.Nf7!? Ra8 29.Nd6 Kg6 30.Ne8 Re8 31.Ra7 Re6+–) 28...Re8 29.Ra7 (29...Re6 30.f3+–) 1–0. Trushina,A – Skubko,E, RUS–ch U16 Girls, 1996.

4.Bb2 b6 5.Nf3 Bb7 6.e3 0-0 7.c4 d5 8.cd5 Bd5 9.Nc3 Bb7 10.Be2 Nbd7 11.0-0 Nd5 (11...a5 12.b5=) 12.Rc1 Rc8 13.Qa4 Ra8 14.b5 (14.Nd5 Bd5 15.Qc2 c5+-) 14...N7f6 15.Ne5 Nc3 16.Rc3 Bd6 17.Nc6 Bc6 18.Rc6 Nd5 19.g3 f5 20.Bf3 Qg5 21.Kh1 h5 (21...a6 22.ba6 Ra7 23.Qb5+-) 22.h4 Qg6 23.Qd1 Qh6 (23...a6 24.Bh5 Qh7 25.Bf3+-) 24.Bc1 Qh7 25.Rg1 g6 26.Rc2 (26.Qa4 Qd7+-) 26...a5 (26...a6 27.Qe2+=) 27.e4 fe4 28.Be4 Rf7 29.Qd3 Rg7 30.Bg5 Rf8 31.Qb3 (31.Re1!? Nf6+-) 31...Kh8 32.Bd5 (32.Re1!? Be7 33.Be7 Re7 34.Rce2+-) 32...ed5+= 33.Re1 Rgf7 34.f4 Rf5 35.Re6 Qf7 36.Rce2 Kh7?? (36...Qg7 37.Qd3+-) 37.Qe3 (better 37.Rd6!? Re8 38.Rf6 Rf6 39.Re8 Qe8 40.Bf6 Qe1 41.Kg2 Qe2 42.Kg1 Qe1 43.Kh2 Qe2 44.Kh3 Qg4 45.Kg2 Qe2 46.Kh3 Qg4 47.Kg2 Qe2=) 37...Kg7? (37...Qg7 38.Be7 Re8 39.Bd6 Re6 40.Qe6 cd6 41.Kg2+=) 38.a4 (better 38.Be7!? Re8 39.Bf6 Rf6 40.Re8 Qd7+-) 38...Kh7 39.Be7 Bf4? (better 39...Re8+-) 40.gf4+- Rf4 (40...Re8 41.Bg5 Re6 42.Qe6 Qe6 43.Re6 Kg7+-) 41.Qg3 (better 41.Bf8 Qf8 42.Re7 Kh6 43.Rf2 Qe7 44.Qe7 Rf2 45.Qe3 g5 46.hg5 Kg6 47.Qf2 Kg5 48.Qf3+-) 41...Rg4+= 42.Qe3?? (better 42.Qh3 Qf1 43.Qf1 Rf1 44.Kh2 Rd4 45.Bg5+=) 42...Qf1 43.Kh2 Rf3 44.Qh6 Kh6 45.Bg5 Rg5 (45...Kg7 46.Re7 Rf7 47.Rf7 Kf7 48.Re7 Kf8 49.Bh6 Ke7 50.Bg5 Ke6 51.Bf6 Qg2) 46.hg5 Kg7 (46...Kg5 47.Rg2 Kh4 48.Re3-+) 47.Re7 Rf7 48.R7e6 (48.Rf7 Kf7 49.Rb2 Qf4 50.Kh3 Qg4 51.Kh2 Qh4 52.Kg2 Qg5 53.Kf2 Qf4 54.Kg2 Qd4 55.Rf2 Ke6-+) 48...Qf4 (48...Rf2 49.Rf2 Qf2 50.Kh3 Qf5 51.Kg3 Qe6 52.Kf2 h4 53.Kf3 Qe4 54.Kf2 h3 55.Kg3 Qe3 56.Kh4 h2 57.Kg4 h1N 58.Kh4 Qg3) 49.Kh1 Qh4 (49...Qh4 50.Kg1 Qd4 51.Kg2 Qg4 52.Kh2 Qf4 53.Kg1 Qf1 54.Kh2 Rf2 55.Rf2 Qf2 56.Kh1 Qh4 57.Kg1 Qg5 58.Kh2 Qh4 59.Kg2 Qg4 60.Kf2 Qf5 61.Ke1 Qe6 62.Kd2 d4-+) 0-1. Sandercock,E Barry - El Mokhtar,Baye, Gibraltar Amateur op week2, 2007.

4.Bb2 d5 5.Nd2 Bd7 6.e3 Ba4 (6...a5 7.b5=) 7.Bd3 0-0 8.Ngf3 Nbd7 (8...a5 9.Bc3=) 9.Qe2 a6 (9...a5 10.Bc3=) 10.Rc1 (10.0-0 b5=) 10...Rc8 (10...a5 11.b5=) 11.h3 (11.c4 a5 12.ba5 c5+=) 11...Nb6 (11...a5 12.Bc3=) 12.g4 (12.0-0 c6+=) 12...Be8 13.g5 Nfd7 14.h4 Na4 15.Ba1 c6 (15...a5 16.Bb5 Nb8 17.ba5=) 16.e4 a5 17.c3 f5 (17...Ra8 18.Qe3=) 18.gf6 Bf6 (18...Rf6!? 19.e5 Rh6=) 19.Bc2 (19.Ng5 Bg5 20.hg5 Bg6 21.ed5 ed5 22.Bg6 hg6 23.Qe6 Rf7+–) 19...b5 20.h5 (20.Ng5 Bg5 21.hg5 Bg6 22.ed5 ed5 23.Bg6 hg6 24.Qe6 Rf7+=) 20...Nab6 (20...h6!?=) 21.Qd3+– e5? (better 21...g6+–) 22.ed5+– e4 23.Qe4 (23.Qe4 Qe7 24.dc6 Rc6 25.Kd1 Qe4 26.Be4+– (26.Ne4?! Be7 27.Bb3 Bf7 28.Bf7 Rf7+–)) 1–0. De Andrade,Valerio Marinho – Macedo,LS De (1775), Natal BRA, Championship Potiguar Absoluto, 2011.

4.Bb2 d5 5.e3=+.

4.Nc3 0-0 5.e4= b6 (5...a5 6.b5=) 6.e5+= Ne8 7.Nf3 (7.Qf3 c6+=) 7...f5 (7...Bb7 8.Bd3=) 8.Bc4 Bb7 (8...d5!? 9.ed6 Nd6+=) 9.0-0 Nc6 (9...a5 10.b5+/–) 10.Re1 (10.d5 Nb8+–) 10...g6 (10...Qc8 11.d5 Nd8 12.Bg5 Bg5 13.Ng5+/–) 11.Bb2 Ng7+/– 12.d5 Nb8 13.de6 Ne6 14.Ng5?? Bg5-+ 15.Be6 de6 16.Ne2 Nc6 17.f4 Be7 18.b5 Na5 19.a4 c5 20.Bc3 Be4 21.Ra2 Nb7 22.Ng3 Bd5 23.Ra1 Qe8 24.Nf1 Rd8 25.Qe2 Rd7 26.Rad1 Qf7 27.Bb2 Rfd8 28.Ne3 Be4 29.Rd7 Rd7 30.Nc4 Qe8 31.Rd1 Rd1 32.Qd1 Qd8 33.Qd8 Nd8 34.c3 Bd5 35.Ne3 Bb7 36.c4 h6 37.Kf2 a6 38.g3 ab5 39.ab5 Be4 40.Ke2 Nb7 41.Bc3 Kf8 42.Nd1 g5 43.Ke3 h5 44.Nf2 Bc2 45.h4 gh4 46.gh4 Bh4 47.Nh3 Kg7 48.Ng1 Bb3 49.Nf3 Bg3 50.Nd2 Ba2 51.Kf3 Be1 52.Ke2 Bd2 53.Bd2 Bc4 54.Ke3 Bb5 55.Bc3 Bc6 56.Kf2 b5 57.Kg3 Kg6 0–1. pillsbury (1950) – guerino (2105), net–chess.com, 2008.

4.c4 d6 5.Nf3 0-0 6.e3 a5 7.b5 c6 8.bc6 Nc6 9.Be2 d5 10.Nc3 b6 11.0-0 Bd7 12.Bd3 (12.cd5 Nd5 13.Nd5 ed5+=) 12...g6 (12...dc4!? 13.Bc4 Na7=) 13.Bb2 Nh5? (better is 13...dc4!? 14.Bc4 Rc8+=) 14.cd5+– ed5 15.Nd5 Bd6 16.e4 Be6 17.Ne3 Ne7 18.d5 Bd7 19.e5 Bc5 20.Bc4 Nf4 21.Ng5 b5 22.Ba2 b4? 23.ab4 Bb5 24.bc5 Bf1 25.Kf1 Nfd5 26.Nd5 Rb8 27.Nf6 Kg7 28.Qd8 Rfd8 29.Bc3 a4 30.Nd7! Rd7 31.e6 Rd4 32.Bd4 f6 33.Nh7 Kh7 34.Bf6 Ng8 35.Be5 (35.Be5 Rc8 36.Bd6+–) 1–0. Dircula – thewidower, ChessWorld.net, 2005.

4.e3 0-0 5.Bd3 d5 6.Nf3 c6 7.Bd2 b6 8.Ne5 c5 9.Qf3 Qc7=.

4.e3 0-0 5.Nf3 a5 6.b5 c6 7.Nc3 d5 8.Bd3 Nbd7 9.bc6 bc6=.

4.e3 0-0 5.Nf3 a5 6.b5 c6 7.c4 d5 8.Bb2 dc4 9.Bc4 Qb6 10.a4 cb5 11.ab5 Bb4 12.Bc3 Bc3 13.Nc3 Qc7 14.Qd3 b6 15.0-0 Bb7 16.e4 Rc8 17.Nd2 Ng4 18.e5 Rd8 19.Rfe1 Nd7 20.Qe2 Nh6 21.Rac1 Nf5 22.d5 Nc5 23.d6 Qc8 24.Ba2 Qb8 25.Bb1 a4 26.Qg4 Nh6 27.Qg5 a3 28.Re3 Kh8 29.Nc4+– Nd7 30.Rh3 Bd5?? 31.Nd5 ed5?? 32.Rh6 gh6 33.Qh6 Nf8 34.e6! fe6 35.Qf6 Kg8 36.Rc3 (36...Ng6 37.Bg6 Qb7 38.Rg3 hg6 39.Qg6 Kh8 40.Rh3 Qh7 41.Rh7) 1–0. gabrielsmith (1750) – macounet (1735), internet, 2002.

4.e3 a5 5.b5 0-0 6.c4 d5 7.Nf3 c6 8.Nc3 b6 9.Bb2 Bb7 10.Rc1 cb5 11.Nb5 Nbd7 12.cd5 Bd5 13.Bd3 Rc8 14.Rc8 Qc8 15.0-0 Qb7 16.Qe2 Bf3 17.gf3 Rc8 18.f4 Qd5 19.e4 Qb7 20.f5 Kh8 21.fe6 fe6 22.f4 g6 23.Qf3 Kg7 24.Qg2 Kh8 25.Qh3 Nf8 26.d5 Qd7 27.Qh4 Kg7 28.d6 Bd8 29.f5 gf5 30.ef5 e5 31.Be5 Qf7 32.Nc7 Kh8 33.Ne6 N8d7 34.Bd4 Rc6 35.Qg3 Qg8 36.Nd8 Qd8 37.Bb5 Qc8 38.Bc6 Qc6 39.Re1 Qc8 40.Re7 Qc1 41.Kg2 Qd2 42.Kh3 Qh6 43.Qh4 Qh4 1–0. Fritz 5.32 (2220) – Doctor 3.0, 2002.

4.e3 a5 5.b5 c6 6.Bd3 cb5 7.Bb5 0-0 8.Nf3 d5 9.Nbd2 Bd7=.

4.e3 a6 5.Be2 0-0 6.c4 c6 7.Nc3 b5 8.c5 d6 9.Nf3 dc5 10.dc5= a5 11.Bb2 ab4 12.ab4 Qd1 13.Bd1 Ra1 14.Ba1 Na6 15.Na2 Nd5 16.Ne5 Nab4-+ 17.Nb4 Nb4 18.Bd4 f6 19.Nf3 e5 20.Bb3 Kh8 21.Bb2? Nd3 22.Ke2 Nb2 23.Ra1 Na4 24.Rc1 Nc5 25.Ba2 Bb7 26.g4 Na4 27.h4 b4 28.Bb3 Nc3 29.Ke1 c5 30.g5 Bf3 (31.Rc3 bc3 32.gf6 Bf6-+) 0–1. Balduan,Karl Heinz – Ehren,Dieter, Koeln CC–ch, 1994.

4.e3 b6 5.Bd3 a5 6.b5 d5 7.Nd2 0-0 8.Ngf3 c6 9.bc6 Nc6=.

4.e3 b6 5.Nf3 d5 6.Bd3 c5 7.bc5 bc5 8.dc5 Bc5 9.0-0 0-0=.

4.e3 c6 5.Bd2 a5 6.ba5 Ne4 7.Nf3 Nd2 8.Qd2 Qa5 9.Qa5 Ra5=.

4.e3 c6 5.Bd3 d5 6.Nf3 a5 7.ba5 Qa5 8.Bd2 Qc7 9.c4 b6=.

4.e3 c6 5.Nf3 d5 6.Bd3 0-0 7.Bd2 b6 8.Ne5 Bd6 9.0-0 Ba6=.

4.e3 d5 5.c4 dc4 6.Bc4 b6 7.Nf3 0-0 8.0-0 Bb7 9.Nbd2 Nbd7 10.Qb3 Rb8 11.Bb2 c5 12.Bd3 Bd5 13.Qc2 Rc8 14.dc5 bc5 15.b5 c4 16.Nc4+= Bc4 17.Bc4 Nb6 18.Ne5 Nc4 19.Nc4 Qd5 20.Rfc1 Qb5 21.Rab1 Qd5 22.Qe2 Rfd8 ½–½. Winiger,Albert – Fournier,Frederic, TT–06.51 TSC, 2003.

4.e3 d5 5.Bd3 a5 6.b5 c5 7.dc5 e5 8.Bb2 e4 9.Be2 0-0=.

4.e3 d5 5.Nf3 a5 6.b5 0-0 7.Bd3 c5 8.dc5 Nbd7 9.Bb2 Nc5=.

4.e3 d5 5.Nf3 Ne4=.

4.Nf3 a5 5.b5 0-0 6.e3 b6 7.Bd3 c6 8.Nc3 d5 9.0-0 Qc7=.

4.Nf3 a5 5.b5 b6 6.c4 Bb7 7.Nc3 d5 8.e3 Nbd7 9.cd5 Nd5 10.Nd5 Bd5 11.Qc2 Bf3 12.gf3+= 0-0 13.Rg1 Bd6 14.h3 g6 15.Bb2 Re8 16.f4 Ra7 17.Bg2 Nf6 18.Bc6 Rf8 19.f5 Qc8 20.d5!+– Nd5?? 21.fg6 f5 22.gh7 Kh7 23.Qd1 Bb4 24.ab4 Nf6 25.Bf6 Qe8 26.Be8 Ra6 27.Qh5 1–0. COMP – COMP, 2002.

4.Nf3 a5 5.b5 c6 6.Nc3 d5 7.e3 Bd7 8.Bd3 cb5 9.Nb5 0-0 10.0-0 Bb5 11.Bb5 Nbd7 12.c4 dc4 13.Bc4 Bd6 14.Rb1 Qb8 15.Qb3 Rc8 16.e4 a4 17.Qd3 Qc7 18.Bb5 Be7 19.Bd2 Nb6 20.Rfc1 Qd8 21.Ne5 Qf8 22.Rc8 Nc8 23.Nc4 Qd8 24.Bf4 Bc5 25.e5 Ng4 26.Rd1 Be7 27.f3 Nh6 28.Bh6 gh6 29.f4 Qd5 30.Rb1 h5 31.Ne3 Qa2 32.Nc4 Bh4 33.Rb2 Qa1 34.Qb1 Qb1 35.Rb1 b6 36.Bd7 Bd8 37.f5 ef5 38.d5 Na7 39.Rb4 Rb8 40.Ra4 b5 41.Rb4 Rb7 42.Bf5 Rc7 43.Nd6 Rc5 44.Be4 f6 45.ef6 Bf6 46.Nf5 Rc3 47.a4 ba4 48.Kf2 a3 49.Rb7 Nc8 50.Nh6 Kf8 51.Rf7 Ke8 52.Rf6 Rc7 53.d6 Rd7 54.Bc6 a2 55.Bd7 Kd7 56.Rf7 Kd6 57.Rf6 Kd5 58.Ra6 Ne7 1–0. Fritz 6 (2220) – Doctor 3.0, 2002.

4.Nf3 d5 5.e3 Ne4 6.Bd3 0-0 7.0-0 a5 8.b5 c6 9.c4 f5=.

4.Nf3 d5 5.Bg5 a5 6.b5 c5 7.e3 c4 8.Nc3 a4 9.Qd2 Nbd7=.

4.Bg5 0-0 5.Nf3 h6 6.Bf6 Bf6 7.e3 a6 8.c4 b6 9.Nbd2 Bb7 10.Bd3 c5 11.bc5 bc5 12.Rb1 cd4?? (better is 12...Bf3 13.Qf3 Nc6=) 13.Rb7+– de3 14.fe3 Nc6 15.Ne4 Qa5 16.Qd2 Qa3 17.Nf6 gf6 18.0-0 Rab8 19.Rfb1 Rb7 20.Rb7 Na5 21.Rd7 Rb8 22.Bf1 Rb2 23.Rd8 Kg7 24.Qd4 h5 25.Qh4 Qe3+/– 26.Kh1 Rb1 27.Qg3+– (27.Qg3 Qg5 28.Qf2+– (28.Ng5?? Rf1)) 1–0. opportunity (2185) – felippe (2225), net–chess.com, 2010.

5.e3 b6 6.Nf3 Bb7 7.g3 d6 8.Bg2 Nbd7 9.0-0 Qc8 10.c4 c5 11.dc5 dc5 12.bc5 Nc5 13.Bd4 Rd8 14.Nc3 a6 15.Qc2 Qc7 16.Ng5 h6 17.Bb7=+ Qb7 18.h4? 18...Rd4?? 19.ed4= Ncd7 20.Kh2 Rd8 21.Nh3 Ng4 22.Kg1 Bh4? 23.Qe4 Ndf6?? 24.Qb7+– (24...Ne8 25.gh4 Rd4 26.f3+–) 1–0. slavisa11 – white, Live Game Caissa's Web, 2004.

5.e3 d5 6.Bd3 Nc6 7.Nf3 h6 8.Nbd2 a6 9.0-0 Bd7 10.Ne5 Ne5 11.de5 Nh7 12.Bd4 b6 13.Nb3 f6 14.f4 fe5 15.Be5 Bf6 16.Qh5 Be8 17.Qg4 Be5 18.Qe6 Bf7 19.Qf5 Nf6?? 20.fe5+– Ne4 21.e6 Be6 22.Qe6 Kh8 23.Rf8 Qf8 24.Qd5 Ng5 25.Rf1 Qe8 26.Qd4 Rd8 27.Qf4 (27...Nh7 28.Nd4+–) 1–0. Trkn – guest7547, ICC, 2004.

5.Nf3 a5 6.b5 d5 7.e3 Nbd7 8.Bd3 Nb6 9.0-0 Na4 10.Bc1 Bd6 11.c3 Nb6 12.Nbd2 Ng4 13.e4+= Bd7 14.h3+/– Nh6 15.c4 dc4 16.Nc4 Nc4 17.Bc4 c6 18.Bg5 Qb6 19.bc6 Bc6 20.Qd3 Rac8 21.Rfc1 Qc7 22.Qe3 Qd7 23.Ne5+– Be5 24.de5 Bb5?? 25.Rd1 Qe8 26.Ba2 Ba6 27.Bf6! gf6 28.ef6 Kh8 29.Qh6 Rg8 30.Rac1 Rc1 31.Rc1 Qd8 32.e5 Bd3 33.Be6! Rg6 34.Qg6! hg6 35.Rc8 Qg8 36.Bd7 b5 37.e6 fe6 38.Rg8 Kg8 39.Be6 Kf8 40.f3 Bc4 41.Bc4 bc4 42.Kf2 Kf7 43.Ke3 c3 44.Kd3 Kf6 45.Kc3 Ke5 46.Kc4 Kf4 47.Kb5 Kg3 48.Ka5 Kg2 49.a4 Kf3 50.Kb5 Kg2 51.a5 Kh3 52.a6 g5 53.a7 g4 54.a8Q Kh2 55.Qa2 Kh3 56.Qe6 Kh4 57.Kc5 g3 58.Qh6 Kg4 59.Qh1 Kf4 60.Kd4 g2 61.Qg2+– Kf5 62.Kd5 Kf4 63.Qf2 Kg4 64.Ke5 Kh3 65.Qg1 Kh4 66.Kf4 Kh5 67.Qg5# 1–0. Anonymous – comp, internet, 2011.

5.Nf3 b6 6.e3 Bb7 7.g3 d6 8.Bg2 Nbd7 9.0-0 Rc8 10.c4 Re8 (10...d5 11.Nfd2=) 11.Re1 (11.Nbd2 a6=) 11...h6 (11...c5 12.dc5 bc5 13.b5=) 12.Qd3 (12.Nbd2 c5=) 12...Nf8 (12...c5 13.dc5 dc5 14.Rd1=) 13.Nbd2+= Ng6 14.Rad1 c5 15.bc5 dc5= 16.Nb3 cd4 17.Nfd4 Bg2-/+ 18.Kg2 Ne5 19.Qe2 Qc7 20.Rc1 a6 21.a4 Bb4 22.Red1 Red8 23.f4 Nc6 24.e4+= Nd4 25.Nd4 Qc5 26.Nb3 Rd1 27.Rd1 Qc7 28.Nd4 Qc4-/+ 29.Rc1 Qe2-+ 30.Ne2 Rc1 31.Nc1 Ne4 32.Kf3 Nc5 33.h3 Kf8 34.g4 Na4 35.Bd4 Bc5 36.Ke4 Bd4 37.Kd4 Ke7 38.Nd3 Kd6 39.Ne5 f6 40.Nc4 Kc6 41.Nd2 Kd6 42.Nb3?? g6 43.h4 e5 44.fe5 fe5 45.Ke4 a5 46.Nd2 Nc5 47.Ke3 b5 48.Nf3 a4 49.Nd2 Kd5 50.Nb1 b4 51.Nd2 b3 52.Nb1 Kc4 53.Kd2 Kb4 (53...Kb4 54.Nc3 a3 55.Nd5 Kc4 56.Nb6 Kd4-+) 0–1. losertoo (1860) – kostaspetidis (2105), net–chess.com, 2006.

5.Nf3 Nc6 6.Nc3 d6 7.e3 a5 8.b5 Na7 9.Bd3 Bd7 10.0-0 Nd5 11.Ne2 Nb5? (better is 11...Nf6 12.a4 c6+=) 12.c4+– Nd4 13.ed4 (worse is 13.cd5 Nf3 14.gf3 ed5+/–) 13...Nb6 Black plans a4 14.Nf4 a4 15.Qe2 Bf6 16.Rab1 Nc8 17.Bc3 b6?? 18.Qe4 Ne7 19.Qh7 1–0. usingprogram – marix2000, kurnik, 2011.

5.Bb2 b6 6.e3 Bb7 7.Nbd2 d6 8.Bd3 Nbd7 9.0-0 c5 10.c4 Qc7 11.Qe2 e5 12.d5 g6 13.h3 Nh5 14.g4 Ng7 15.e4 Qd8 16.Qe3 f5 17.gf5 gf5 18.ef5 Nf5 19.Bf5 Rf5 20.Ne4 (20.Kh2 Qf8=) 20...Qf8 (20...cb4 21.ab4 b5 22.Nfd2 bc4 23.Nc4 Bd5 24.Qd3 Be4 25.Qe4-/+) 21.Nfd2= Rf4 22.Kh2 Nf6 23.Rg1 Kh8 24.Rg3 Ne4 25.Ne4 Qf5 26.Re1 (26.f3 Rf8 27.Rg4 Rg4 28.fg4 Qg6=) 26...Rf8 27.bc5 bc5 28.Re2 Bc8 29.Kg2 (29.Kg1!?+=) 29...h5-/+ 30.Qd3 h4 (30...Bh4 31.Rge3 Qg6 32.Ng3 Qd3 33.Rd3 Bg3 34.Rg3-+) 31.Rge3 Rg8 32.Kf1 Qg6 33.Ke1 Bf5 34.Kd2 Rf8 35.f3 Be4 36.fe4 (better is 36.Re4!? Qg5 37.Rf4 Qf4 38.Kc2 Qf3 39.Re3 Qg2 40.Re2-/+) 36...Bg5-+ 37.Kc2 Bh6 38.Re1 Rf2 39.R3e2 R2f3 (better is 39...R8f3!? 40.Rf2 Rd3 (40...Rf2?! 41.Re2 Rf1 42.Rh2-/+) 41.Kd3 Qg3 42.Ke2 Qe3 43.Kf1 Qh3 44.Ke2 Qe3 45.Kf1 Qd3 46.Kg2 Bf4-+ (46...Qc4?! 47.Kh3 Qd3 48.Kh4-+)) 40.Qd1-/+ Rh3 41.Kb1 Rg3 42.Ka2 Qg4 43.Rf1 Rf1-+ 44.Qf1 Bf4 45.Rf2 Rg1?? 46.Rf4+– Rf1 47.Rg4 Rf4 48.Rf4 1–0. Shensnovich,Vladimir (2195) – Skrynnikov,Denis (2105), RUS Central Region–ch, 2004. (=1.Nf3 Nf6 2.b4 e6 3.a3 Be7 4.d4 0-0)

5.Bb2 b6 6.e3 Bb7 7.Bd3 Nc6 8.0-0 a5 9.b5 Nb8 (9...Na7 10.c4+=) 10.a4 (10.c4 Be4+=) 10...c6 (10...Ne4 11.Nfd2 f5 12.Be4 fe4 13.Qg4+=) 11.h3 (11.e4 cb5 12.e5 Nd5 13.Bb5 d6+=) 11...Qc7 12.c4 d5 13.Nc3 Nbd7 14.Re1 Rac8 15.Ne5 dc4 16.Bc4 Nb8 17.e4 cb5 18.Nb5+= Qd8 19.Rc1 Ne4 20.Bd3 Nf6 21.Rc8+= Qc8 22.Qc2 Qc2-/+ 23.Bc2 Rc8 24.Bb3 Nbd7 25.Nd7+= Nd7 26.Rc1 Nf6 27.Rc8 Bc8 28.Na7 Bb7 29.Nb5 Nd5 30.Bd5 Bd5-+ 31.Nc7 Bb3 32.f4 Ba4 33.Kf2 Bd6 34.g3 Bc7 35.Ke3 Kf8 36.Ba3 Ke8 37.g4 Kd7 38.h4 b5 39.Bf8 g6 40.Bg7 b4 41.Kd3 Bb5 42.Kc2 Bf4 43.Kb3 Kd6 44.g5 Bg3 45.Bf6 Bh4 46.Bd8 Be1 47.Ba5 Kd5 48.Bb4 Bc4 49.Ka3 Bb4 50.Kb4 Kd4 51.Ka3 e5 52.Kb2 Kd3 53.Kc1 Ke2 54.Kc2 e4 55.Kc3 Be6 56.Kd4 e3 57.Ke5 Kf3 58.Kf6 e2 59.Kg7 e1Q 60.Kh6 Qh4 61.Kg7 Qg5 62.Kf8 f5 63.Ke8 Qf4 64.Ke7-+ Qe5 65.Ke8 Qc7 66.Kf8 Qf7 0–1. iboyd (1950) – kostaspetidis (2105), net–chess.com, 2006.

5.e3 a5 6.b5 c6 7.Nc3 d5 8.Bd3 Nbd7 9.bc6 bc6=.

5.e3 d5 6.Nc3 a5 7.b5 b6 8.Bd3 c6 9.0-0 Bb7 10.Rb1 c5 11.Ne5 Bd6 12.Bb2 Qe7 13.Na4 Qc7 14.dc5 Be5 15.cb6 Qd6 16.Be5 Qe5 17.Qc1 Nbd7 18.Rd1 Rfc8 19.Rb3 Ng4 20.f4 Qh5 21.h3 Ne3!! 22.Bh7 Qh7 23.Re3 Rc4 24.Nc3 Nb6 25.Red3 d4! 26.Qd2 Rac8 27.Rg3 Bg2! 28.Ne2 Bh3 29.Qa5 Nd5 30.Qe1 Bf5 31.Nd4 Be4 32.Nf3 Rc2 33.Nh4 Nf4 34.a4 Qh5 35.Kf1 Ng2! 36.Rg2 Bg2 (37.Kg1 Qg5-+) 0–1. Bestia_03g – Sjeng_75s, GS–12 Tournament, 2000.

5.g4 Ng4 6.h3 (6.Rg1 Nf6+=) 6...Nf6-/+ 7.Ne5 (7.Rg1 a5 8.Bh6 Ne8-/+) 7...d6 8.Ng4. bouffant – dittohead, net–chess.com, 2002.

5.Bg5 d5 6.e3 h6 7.Bf6 Bf6 8.c4 a5 9.Nc3 ab4=.

4.b5 Ba3 5.Na3 c5 6.c3 Qa5 7.Qb3 cd4 8.Rc1 d5 9.Nf3 dc3 10.Qc3 Qc3 11.Rc3 Nbd7 12.e3 b6 13.Bd3 Nc5 14.0-0 0-0 15.Rfc1 Re8 16.Ne5 Bb7 17.R3c2 Rab8 18.Nb1 Rbc8 19.Nc3 Nfd7 20.Bh7 Kh7 21.Nf7 Rf8 22.Nd6 Rb8 23.a4 Nf6 24.Nb7 Rb7 25.h3 Rc8 26.g4 Rbc7 27.Nd1 Nfe4 28.h4 Rf8 29.g5 Kg6 30.f4 Nd6 31.Rf2 Nf5 32.a5 ba5 33.Rh2 Kh5 34.Rhc2 Rfc8 35.Nf2 Ne3 36.Re2 Nf5 37.Rb1 Nh4 38.Re3 Rf8 39.Nh3 Ng6 40.Rf3 Kg4 41.Rbf1 Rb7 42.Kf2 Rb5 43.Rg1 Kh5 44.Rf1 Ne4 45.Ke2 Rb2 46.Ke1 (46...Rc8 47.Nf2 Rc1 48.Nd1 Rd2 49.Rh1 Kg4 50.Rg3 Kf5 51.Rgh3 Rcd1#; 46.Kd1-+) 0–1. SnailSCP – Zephyr, computer chess game, 2000.

4.e3 0-0 5.Nf3 d5 6.Bd3 Bd6 7.c3 a5 8.ba5 Ra5 9.Bd6 Qd6 10.Nbd2 Nc6 11.0-0 e5 12.e4 ed4 13.cd4 de4 14.Ne4 Ne4 15.Be4 Bf5 16.Bf5 Rf5 17.Rb1 b6 18.Qc2 Rf4 19.Rbc1 Nd4 20.Nd4 Rd4 21.Qc7 Qc7 22.Rc7 h6 23.Rb7 Ra8 24.Rb6 Ra2 25.Rb8 Kh7 26.Rbb1 Rdd2 27.Ra1 Rac2 28.Ra7 Kg6 29.Ra6 f6 30.h3 h5 31.Rb6 h4 32.Rb4 Kh5 33.Rf4 Rc6 34.Rb1 g5 35.Rf5 Kg6 36.Rf3 Ra6 37.Rfb3 Raa2 38.Rf3 Ra5 39.Rb6 Rf5 40.Rf5 Kf5 41.Rb3 Re2 42.Kf1 Ra2 43.Kg1 Kg6 44.Rb6 Rd2 45.Kf1 Rc2 46.Ke1 Ra2 47.Kf1 Rc2 48.Ke1 Rc1 49.Ke2 Rc3 50.Ra6 Rb3 51.Ke1 Rb2 52.Kf1 Rc2 53.Ke1 Rb2 54.Kf1 Rc2 55.Kg1 Re2 56.Kf1 Rb2 57.Rc6 Kf5 58.Ra6 Rc2 59.Ra4 Ke5 60.g3 hg3 61.fg3 Rh2 62.h4 gh4 63.gh4 f5 64.Ra5 Kf4 65.Kg1 Rb2 66.Rd5 Kg4 67.h5 Rb6 68.Ra5 Rh6 69.Ra2 Rh5 70.Ra5 Rh7 71.Kg2 f4 72.Ra3 Rc7 73.Ra4 Rc2 74.Kf1 Kg3 75.Ra1 f3 76.Ke1 Kg2 77.Kd1 Rc4 78.Ra8 Rd4 79.Kc1 f2 80.Ra2 Kg1 81.Rf2 Kf2 82.Kb2 Ke2 83.Kc3 Re4 84.Kb2 Kd2 85.Kb3 Rd4 86.Kb2 Rd3 87.Ka1 Kc1 88.Ka2 Rc3 89.Ka1 Ra3# 0–1. Betsy516 – Nejmet260, computer chess game, 2001.

4.a4!?+= d5 (4...a6 5.ba6 Na6 6.e3 d5 7.Nf3 Ne4 8.Bd3 Nb4 9.Be2 c5 10.0-0 cd4 11.Nd4 Bd7 12.c3 Na6 13.c4 Nac5 14.cd5=; 4...Ne4 5.e3 a6 6.ba6 Na6 7.Nf3 d5 8.c4 Qa5 9.Bd2 Bb4 10.Bd3 Nd2 11.Nbd2 Bc3 12.Rc1 Bb2 13.Rb1 Nb4 14.Be2=) 5.Nf3 a6 6.ba6 Na6 7.Ba3 Qa5 8.c3 c5 9.Nfd2 Bd7 10.Nb3 Qc7 11.e3 Ba4 12.N1d2 c4 13.Bf8 Bb3 14.Nb3-/+.

4.Nc3 cb5-/+ (4...Bb4 5.Bd2 Qa5 6.Nb1 Qb5 7.e3 Qb6 8.Bd3 d5 9.Bb4 Qb4 10.Nd2 0-0 11.Ngf3 c5 12.dc5 Nc6 13.0-0 e5 14.c4-/+; 4...Qa5 5.Bd2 Bb4 6.Nb1 Qb5 7.e3 Qb6 8.Bd3 d5 9.Bb4 Qb4 10.Nd2 c5 11.a3 Qa5 12.dc5 0-0 13.Ne2 e5 14.0-0-/+) 5.Nb5? (better is 5.Nf3-/+ Qa5 6.Bd2 b4 7.Nb1 d5 8.c3 Nc6 9.e3 Ne4 10.c4 Bd6 11.Qc2 0-0 12.Bd3 f5 13.0-0 Bd7 14.Qb3-/+; 5.a3 b4 6.ab4 Bb4 7.Bd2 Nc6 8.e3 d5 9.Nf3 0-0 10.Bd3 Be7 11.0-0 Nb4 12.Be2 Bd7 13.Qb1 a5 14.Na2-/+) 5...Qa5-+ 6.c3 Qb5 7.e3 Qc6 8.Bb2 Ba3! 9.Qb3 (9.Ba3 Qc3 Double attack (9...Qc3 Decoy)) 9...Bb2 10.Qb2 0-0 11.a4 b6 12.Bb5 (12.Nf3-+) 12...Qg2 13.Ne2 (13.Nf3 Qh1 14.Ke2 Qg2-+) 13...Qh1 14.Kd2 Ne4 15.Kc2 Qf3 16.h4 Qf2 17.c4 Qe2 18.Kc1 Qe1 19.Kc2 Qd2 20.Kb1 Nc3 21.Qc3 Qc3 22.h5 Qb3 (22...a6 23.Bd7 Nd7 24.Ra2-+) 23.Kc1 a6 24.Rb1 Qe3 25.Kd1 ab5 26.ab5 Ra2 0–1. farid8 – daverundle, gameknot.com, 2005. (=1.d4 Nf6 2.b4 e6)

4.c4 cb5 5.cb5 Qa5 6.Bd2 Qb5 7.Nc3 Qb6 8.Be3 (8.Nf3!?=+) 8...Bb4 9.Rc1 Nd5 (9...Nc6!?-/+) 10.Bd2 Nc6 (better is 10...Nc3 11.Bc3 Nc6=+) 11.Na4?? (better is 11.Nd5 ed5 12.e3=) 11...Qa5 12.Nf3-/+ Nd4 13.Nd4=+ Bd2 14.Qd2 Qa4 15.e4 Nf6 16.Bb5 Qa3=+ (16...Qa3 17.Bd3 a6=+). bjhaskins – fin, net–chess.com, 2002.

4.bc6 bc6 (4...dc6 5.Nf3 Nbd7 6.e3 Bd6 7.Nbd2 0-0 8.Bd3 e5 9.Nc4 Bb4 10.Bd2 Bd2 11.Ncd2 Re8 12.de5 Ne5 13.Ne5 Re5 14.0-0=; 4...Nc6 5.Nf3 d5 6.e3 Bd6 7.c4 dc4 8.Bc4 a6 9.Bd3 e5 10.Nbd2 Bg4 11.0-0 Qe7 12.Ne4 Ne4 13.Be4 f5 14.Bc6+=) 5.Nf3 c5 6.e3 d5 7.Nbd2 c4 8.Ne5 Nbd7 9.Qf3 c3 10.Nb1 Qa5 11.Bd3 Ne5 12.de5 Nd7 13.Qf4 Rb8 14.Qd4-/+.

4.Nd2 cb5 (4...Qa5 5.e3 cb5 6.Ngf3 Nc6 7.Be2 d5 8.0-0 Bd6 9.Bb2 0-0 10.Bd3 Qb4 11.Nb3 Rd8 12.a3 Qa4 13.Nc5 Bc5 14.dc5-/+; 4...d5 5.e3 Qa5 6.a4 Bd7 7.Bb2 Bb4 8.Ngf3 Ne4 9.c4 0-0 10.Bd3 Rc8 11.Ke2 Nc3 12.Bc3 Bc3 13.Rb1 cb5 14.ab5=) 5.e4 Nc6 6.Bb2 b4 7.Bd3 Be7 8.d5 ed5 9.e5 Ng8 10.Qf3 d6 11.e6 Nf6 12.ef7 Kf7 13.Nh3 Ne5 14.Ng5-/+.

4.e3 cb5 (4...d5 5.Nf3 Bd7 6.a4 a6 7.ba6 Na6 8.c4 c5 9.Ne5 cd4 10.ed4 Bb4 11.Bd2 0-0 12.c5 Qc7 13.Qc2 Ne4 14.Qb2=; 4...Ne4 5.Bd3 d5 6.Nf3 Bb4 7.Nfd2 cb5 8.Bb5 Nc6 9.c4 dc4 10.Bc4 0-0 11.0-0 Nf6 12.Qb3 a6 13.Bd3 Be7 14.Ba3=) 5.Bd3 Nc6 6.Nf3 d5 7.0-0 b4 8.c4 dc4 9.Bc4 Bd6 10.Re1 0-0 11.e4 e5 12.d5 Na5 13.Bd3 Bg4 14.h3+=.

4.Nf3 cb5 (4...Ne4 5.e3 cb5 6.Qd3 d5 7.Qb5 Nc6 8.Bd3 Bb4 9.Bd2 Nd2 10.Nfd2 Rb8 11.Qa4 a6 12.c3 b5 13.Qc2 Bd6 14.0-0+=; 4...d5 5.e3 Bd7 6.c4 cb5 7.cb5 Ne4 8.Qa4 a6 9.Bd3 Qb6 10.Na3 Ba3 11.Ba3 Bb5 12.Rb1 Ra7 13.0-0 Nc6 14.Rfc1+=) 5.e3 b4 6.c4 bc3 7.Nc3 Nc6 8.Bd3 d5 9.0-0 Bd7 10.a3 Rc8 11.Bd2 Be7 12.Qb3 Na5 13.Qb2 a6 14.a4-/+.

4.Qa4 b6 5.Nh3 Bb7 6.b5 d6 (6...Be7 7.Ba3=+) 7.Bf4 Nbd7 8.f3 (8.e3 Be7=) 8...e5=+ 9.de5 (9.Bg5 d5=+) 9...de5 10.Bg5 Nc5 11.Qc2 e4 12.Na3 h6 13.Rd1 Qe7 14.Bf6 Qf6 15.Nc4 Qe6 16.e3 (16.Rd4!?-/+) 16...ef3-+ 17.Nf4 (17.Rd4 Be4 18.Qf2 fg2 19.Bg2 Bd6-/+) 17...Qe4 (17...fg2 18.Ng2 Be4 19.Qf2-+) 18.Qf2 Rd8 (18...fg2 19.Qg2 g5 20.Nd5-+) 19.Nd2 (better is 19.Rd8!? Kd8 20.Qf3=+) 19...Qc2-+ 20.gf3 Bd6 (20...g5 21.Ng2-+) 21.Nh5 (better is 21.Nb1 Qf2 22.Kf2 Bf4 23.Rd8 Kd8 24.ef4-/+) 21...Na4?? (21...Be5 22.Rg1 Qc3 23.Nf4-+) 22.Ne4?? (22.Ng7 Kf8 23.Rg1 Nc3 24.Ra1-/+) 22...Be4-+ 23.fe4 Qc3 24.Rd2 Bb4 (25.Be2 Qa1 26.Bd1 Bd2 27.Ke2 Nc3 28.Kf3 Nd1 29.Ng7 Qg7 30.Rd1 Qg5-+) 0-1. Szabo - Secula, corr SOK-89-49, 1989.

4.Qa4 Nd5 5.e4 Nb6 6.Qb3 ab4 7.Nf3 bc3 8.Nc3 Be7 9.Bf4 Nc6 10.Bb5 Ra3 11.Qb2 Rc3 12.a3 Rf3 13.gf3 0-0 14.Rg1 Na7 15.Bd3 d6 16.Rc1 Bh4 17.Be3 Bf6 18.Rc2 Nc6 19.Bb5 Bd7 20.Qc3 e5 21.Bc6 bc6 22.Qd3 ed4 23.Bd4 Bd4 24.Qd4 f6 25.Qe3 c5 26.Qh6 Qe7 27.Qd2 Rc8 28.Qe3 Bc6 29.Rg4 Qe6 30.h3 Re8 31.Re2 Nc4 32.Qb3 Qf7 33.Rg3 Ra8 34.Ra2 d5 35.Qd3 d4 36.Qb3 Ba4 37.Qb7 Nb6 38.Rb2 Qc4 39.Rg7 Kg7 40.Qc7 Nd7 41.Qg3 Kf7 0–1. marus1 – Pertinax1, internet, 2001.

4.b5 b6 5.a4 Bb7 6.Nf3 d6 7.Ba3 Be7 8.Qb3 0-0 9.Nbd2 Nbd7 10.Rd1 c5 11.bc6 Bc6 12.c4 d5 13.e3 Re8 14.Be7 Qe7 15.cd5 Bd5 16.Bc4 Rec8 17.Bd5 Nd5 18.Nb1 (18.Ra1 Rc3 19.Qb5 Rac8=+) 18...Nb4 (better 18...Qb4!? 19.Qb4 ab4-/+ (19...Nb4?! 20.Ke2=)) 19.0-0= Nf6 20.Ne5 Rc7 21.Nc3 (21.Na3 Rac8=) 21...Rac8=+ 22.Nb5 Rc2 23.f3 (23.Qa3 Ne4 24.Rc1 Qh4 25.Rc2 Rc2=+) 23...Nd7 (23...Nfd5 24.f4-/+) 24.Nd3 (better 24.Nd7!? Qd7 25.e4=) 24...Qg5 25.Nb4?? (better 25.Nf4 Nd5 26.Rf2 Rf2 27.Kf2 Nf4 28.ef4 Qf4 29.g3-/+) 25…Qg2 (25...ab4?! 26.Rf2 Rf2 27.Kf2=) 0-1. Aleks (1750) - darksiders_xxx_vr (2215), Rated Rapid game, lichess.org, 2021. (=1.d4 Nf6 2.b4 e6 3.c3)

4.b5 d5 5.a4 c5 6.dc5 Bc5 7.e3 e5 8.Ne2 0-0 9.Ng3 Nbd7 10.Be2 Nb6 11.0-0 Be6 12.Kh1 Nc4 13.Bc4 dc4 14.Ra2 Qc7 15.Nd2 Rfd8 16.Qe2 Rd3 17.Nb1 e4 18.Rd2 Bg4 19.Qe1 h5 20.Rd3 ed3 21.Nd2 Bd6 22.f4 Re8 23.Qf2 h4 24.b6 Qc6 0–1. Nielsen – Vollbrecht, 1986.

4.a4 Bb7 5.Nf3 Be7 6.Ba3 0-0 7.Nbd2 d6 8.Qb3 Nbd7 9.Rc1 Rb8 10.c4 c5 11.dc5 bc5 12.b5 a6 13.e3 ab5 14.cb5 Qa5 15.Be2 Nb6 16.0-0 Qa4 17.Qa4 Na4 18.Ra1 (18.Rc2 Nd5 19.Bd3 Ndc3-+) 18...Ra8 (better 18...Nc3 19.Bd3 Nb5-+) 19.Bc5? (better 19.Bd3-+) 19...Nc5 20.Ra8 (20.Nd4 Nd5-+) 20...Ra8 21.Rc1 Ra2 22.Nb1 (22.Kf1 Kf8-+) 22...Ra1 (better 22...Re2!? 23.Nd4 Rf2 24.Kf2 Nd3 25.Kg1 Nc1 26.Nc6-+) 23.Nd4 (23.Rd1-+) 23...Be4 24.f3 Rb1 25.Rb1 Bb1 26.b6 (26.Nc6 Kf8-+) 26...Nb7 (better 26...Nd5 27.b7 Nb7 28.Kf2-+) 27.Ba6 Nc5 28.Bc8?? (28.Be2 Nd5 29.b7 Nb7 30.Kf2-+) 28...Nfd7-+ 29.b7 (29.Bd7 Nd7 30.Nc6 Bg5-+) 29…Nb8 0-1. Aleks - Gibberish (2135), lichess.org, 2020. (=1.d4 Nf6 2.b4 e6 3.c3)

4.a4 Bb7 5.Bg5 Be7 6.a5 d6 7.Nf3 Nbd7 8.e3 0-0 9.a6 Be4 10.Nbd2 Re8 11.Ne4 Ne4 12.Be7 Qe7 13.Bd3 Nc3 14.Qc1 Nd5 15.Be4 N7f6 16.Ra2?? Ne4-+ 17.Nd2 Nd2 18.Qd2 c5 19.b5 Nc7 20.0-0 Nb5 21.dc5 dc5 22.Qd3 Nc7 23.Ra4 Nd5 24.g3 Rad8 25.h4 Nf4! 26.Qb1 Ne2 27.Kh2 Nc3 28.Qb3 Na4 29.Qa4 h6 30.f4 Rd2 31.Kg1 Red8 32.Qa1 Qc7 33.Rf2 Qc6 34.Qc3 Rd1 35.Rf1 Rf1 36.Kf1 Qf3 37.Kg1 Rd1 38.Kh2 Qh1# 0–1. Dixon,Grant – Hughes,Chris, RN–2011–0-00423, 2011.

4.e3 Bb7= 5.Nf3 (5.f3 d5=) 5...Be7 6.Be2 (6.Nfd2 Ne4=) 6...0-0 (6...Bf3 7.Bf3 c6 8.e4=) 7.Qb3 d6 (7...Bf3 8.Bf3 d5 9.Bd2=) 8.a4 a6 9.Ba3 Nbd7 10.c4 c5 11.0-0 Rb8 (11...Qc7 12.Re1=) 12.Rd1 Qc7 13.Nc3 Ne4 (13...cd4 14.Nd4 Rbc8 15.Rdc1=) 14.Rac1 (14.Ne4 Be4 15.Nd2 Bf5=) 14...Nc3 15.Qc3 Nf6 16.b5 ab5 17.ab5 (17.cb5 Inferior is 17...Ra8-/+) 17...Ra8 18.Ra1 d5 The thematic attack 19.dc5 Bc5 20.Bb2 h6 21.Nd2 Rac8 22.Rac1 (22.Qc2 e5=) 22...Qe7 23.Bf3 Rfd8 24.cd5 Bd5 25.Bd5 Rd5 26.Qb3 Rcd8 27.Bf6 Qf6 28.Ne4? (better is 28.Nf1= and White can hope to live) 28...Qb2!-/+ 29.Qa4 (29.Qb2 Rd1 Mate attack) 0–1. Dobrzhanskaia,Irina (2085) – Rohonyan,Katerina (2225), UKR–ch U18 Girls, 2002. (=1.d4 Nf6 2.b4 e6 3.c3 b6)

4.Nf3 Bb7 5.g3 Be7 6.Bg2 0-0 7.0-0 a5 8.b5 d5 9.a4 Ne4 10.Ba3 c6 11.bc6 Nc6 12.Nfd2 Nd6 13.e4 Ne4 14.Ne4 de4 15.Be4 Rb8 16.Nd2 Ba3 17.Ra3 Ne7 18.Rb3 Be4 19.Ne4 Nd5 20.Qd3 Qd7 21.Qb5 Qb5 22.Rb5 f5 23.Ng5 Nc3 24.Ne6 (24.Re5!?+=) 24...Nb5-/+ 25.Nf8 Kf8 (25...Nd4 26.Nd7 Rb7 27.Ne5 Ne2 28.Kg2-/+) 26.ab5 Rd8 27.Rc1 Rd5 28.Rc8 Ke7 29.Rc7 Kd8 30.Rg7 Rb5 31.Ra7 h6 32.h4 Rd5 33.Rb7 Rd6 (worse is 33...Rd4 34.Rb6 Ke7 35.Rh6+/–) 34.Rf7 a4 35.Rf5 Rd4 36.Kg2 a3 37.Rf8 Ke7 38.Ra8 Rd3 39.Kf1 b5 40.Ke2 Rb3 41.Kd2 (41.Ra7 Kf6 42.Ra6 Kf5 43.Kd2-+) 41...b4-+ 42.g4 Rb2 43.Kc1 (better is 43.Kd3 Rf2 44.g5 hg5 45.hg5-+) 43...Rf2 44.Ra4 (44.Kb1 Rg2 45.h5-+) 44...a2 45.g5 (45.Ra7 Ke6 46.Ra6 Kd7 47.Ra7 Kc6 48.Ra2 Ra2-+) 45...hg5 (45...b3 46.Re4 Kd6 47.Rd4 Ke5 48.Rd5 Kd5 49.gh6 a1Q) 46.hg5 b3 (46...b3 47.Re4 Kd6 48.Rd4 Ke5 49.Rd5 Kd5 50.g6 a1Q) 0–1. Baret,Antoine (2060) – Soric,Romeo (2080), Zadar CRO, 4th League South, 2013. (=1.d4 Nf6 2.b4 e6 3.c3 b6)

4.Bg5 Ba6 5.e4 Bf1 6.Kf1 h6 7.Bf6 Qf6 8.Nf3 d5 9.ed5 ed5 10.Nbd2 Nd7 11.Qa4 Bd6 12.Qc6 Rb8 13.Re1 Kd8 14.Qd5 Qg6 15.Ne4 Nf6 16.Nf6+– Qd3 17.Kg1 gf6 18.Qf7 Rf8 19.Qb3 Kc8 20.a4 c6 21.Re3 Qg6 22.Re6 Kc7 23.d5 Rg8 24.g3 c5 25.bc5 bc5 26.Qc4 Qc2? 27.Nd4 Rb1 28.Kg2 Rg3 29.hg3 Rh1 30.Nc2 (30.Nc2 Rh5 31.Qa6 Rd5 32.Qa7 Kc6 33.Qa8 Kb6 34.Qd5 Ka6 35.Rd6 Ka7 36.Qf7 Ka8 37.Rd8#) 1–0. mtr – opponent, internet, 2001.

4.Bg5 Bb7 5.Nf3 h6 6.Bh4 g5 7.Bg3 d6 8.e3 Bg7 9.Bb5 Nbd7 10.0-0 0-0 11.Nbd2 Nd5 12.Qc2 a6 13.Bd3 f5 14.a3 N5f6 15.a4 a5 16.b5 Qe7 17.Bc4 Nh5 18.Rad1 Kh8 19.Rc1 e5 20.de5 de5 (worse is 20...Ng3 21.ed6 (21.hg3?! Ne5 22.Ne5 Qe5=) 21...Qd6 22.hg3+/–) 21.Rce1 Nc5 22.h3 Ng3 23.fg3 Rad8 24.Rd1 Rd6 25.Ba2 Rfd8 26.Bb3 Rd3 27.Nc4 Be4 28.Qa2 Nb3 29.Qb3 Qc5 30.Rd3 Rd3 (worse is 30...Bd3 31.Rd1-/+) 31.Ne1 Rd7 32.Nf3 Bd5 33.Nfd2 Bg8 34.Qc2 e4 (34...Bc4 35.Nc4 Qc4 36.Qf5-+) 35.g4 Bc4 (35...Bc4 36.Nc4 Qc4 37.gf5 Bc3-+) 0–1. Rogers,Henry – Stefanov,Plamen (2185), IECG, 2004.

4.Bg5 c5 5.bc5 bc5 6.e4 Qa5 7.Bf6 gf6 8.Qf3 Be7 9.e5 Nc6 10.ef6 Bf8 11.d5 Ne5 12.Qe4 d6 13.f4 Ng6 14.de6 Qb4 15.Qc6 Bd7 16.Qd7 1–0. marekt – Clubfoot, GameColony.com, 2002.

4.Bg5 Be7 5.e3 Bb7 6.Nd2 a5 7.a3 ab4 8.ab4 Ra1 9.Qa1 0-0 10.Ngf3 Nc6 11.Bd3 h6 12.Bh4 Qa8 13.0-0 Qa1 14.Ra1 Ra8 15.Ra8 Ba8 16.e4 Nh5 17.Be7 Ne7 18.g3 Nf6 19.Kg2 d5 20.e5 Ne4 21.Be4 de4 22.Ng1 e3 23.Ndf3 ef2 24.Kf2 Bf3 25.Kf3 Nd5 26.Ne2 Kf8 27.b5 ½–½. mtrc – TT12, internet, 2002.

4.Bg5 Be7 5.Nf3 a5 6.b5 0-0 (6...d5 7.e3=) 7.e3 (7.Bf6 Bf6 8.e4 Bb7=) 7...d5 8.Bd3 Nbd7 (8...c5 9.dc5 bc5 10.0-0=) 9.Nbd2 Bb7 10.0-0 c5 (10...Rc8 11.Qb1=) 11.bc6 Bc6 12.c4 h6 13.Bf4 (13.Bf6 Nf6 14.Ne5 Rc8=) 13...Nh5 (13...Rc8 14.Rc1=) 14.Ne5+= Ne5 15.Be5 Nf6 16.cd5 ed5 17.Rc1+/– Bb7 18.Bc7 Qd7 19.Bb6 a4?? 20.Rc7+– Qc7 21.Bc7 Rfc8 22.Bf4 Ne8 23.Qb1 Ba6 24.Ba6 Ra6 25.Qb7 (25.Qb7 Rac6 26.Qe7+–) 1–0. Rosner,Dirk – Zimmer,Georg, corr, 1995.

4.Bg5 Be7 5.Nf3 d5 6.e3=.

4.Bg5 Be7 5.Bf6 Bf6 6.e4 d6 7.Nf3 0-0 8.Nbd2 Bb7 9.Bd3 Nd7 10.0-0 e5 11.Bc4 Re8 12.Qb3 Qe7 13.h3 Qf8 14.Rae1 g6 15.g3 Bg7 16.Ng5 Re7= 17.Qb2 h6 18.Ngf3 Kh7 19.Qc2 a6 20.a4 a5 21.d5 Ra7 22.Bb5 Ra8 23.Nc4 Ba6 24.Ba6 Ra6 25.Re2 Qa8 26.ba5 ba5+= 27.Rb1 Nb6 28.Qb3 Nd7 29.Qb5 Nc5 30.h4 Kg8 31.Re3 Re8+= 32.Re2 Re7+/– 33.Re3 Re8+= 34.Ne1 Ra7 35.Rb2 Rb7 36.Qc6 Reb8 37.Rb7 Rb7 38.f3 Qa7 39.Kh2 Qa8 40.Nd3 Nd3 41.Rd3 Bf8 42.Kg2 Bg7 43.Rd1 Bf8? 44.Rb1+– Ra7 45.Qa8 Ra8 46.Rb7 (46...Rc8 47.h5+–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

4.Bg5 h6 5.Bf6 Qf6 6.e4 Bb7 7.Nd2 c5 8.bc5 bc5 9.Rb1 Bc6 10.Ngf3 cd4 11.cd4 Be7 12.Ne5 0-0 13.Be2 d5?? 14.Rb8!!+– Rab8 15.Nc6 Rb2 16.e5 Qg5 17.h4! Qg2?? 18.Ne7 Kh8 19.Bf3!! 1–0. mtr – opponent, internet, 2001.

4.Bg5 a5 5.Qa4 b5=+ 6.Qa3 Bb7 7.Qb2 h6 8.Bf6 Qf6 9.ba5 Ra5 10.a4 Ba6 11.e3 Bd6 12.ab5 Ra1 13.Qa1 Bb5 14.Bb5 cb5 15.Nf3 b4 16.Nbd2 bc3 17.Ne4 Qe7 18.Nd6 Qd6 19.Qc3 0-0 20.0-0 Nc6 21.Rc1 Ra8 22.Qc4 Qb4 23.Qc2 Ne7 24.Rb1 Qa3 25.Ne5 d6 26.Nc4 Qa6 27.Nb6? Rb8-+ 28.Qc7 Rb7 29.Qd8 Kh7 30.e4? d5 31.Kh1 de4 32.Qf8 Rb6 33.Rg1 Nf5 34.Qf7 Qb7 (35.Qb7 Rb7-+; 34...Qe2!? 35.Qc7 Rd6 36.Qc1-+) 0–1. wesolyPolak (1820) – octavio_sergio (1765), GameColony.com, 2002.

4.Bg5 Be7 5.Nf3 a5 6.Qa4 b5 7.Qa3 Bb7 8.Bf6 gf6 9.Qb2 ab4 10.cb4 Na6 11.a3 Qb6 12.Nc3 0-0 13.e3 Nb4 14.ab4 Ra1 15.Qa1 Bb4 16.Bd3 Ra8 17.Qb2 Qa5 18.Kd2 Bc3 19.Qc3 Qc3 20.Kc3 Ra3 21.Kd2 Ba6 22.Rc1 b4 23.Ba6 Ra6 24.Rb1 Ra2 25.Kd3 Rf2 26.Nh4 Kg7 27.e4 Kh6 28.Ke3 Ra2 29.Rb4 Kh5 30.g3 Rh2 31.Rb7 Kg4 32.Rd7 Kg3 33.Nf3 Ra2 34.Ne1 h5 35.Rf7 h4 36.Rf6 Ra3 37.Nd3 h3 38.Rg6 Kh2 39.Re6 Kh1 40.Rc6 h2 41.Kf2 Ra2 42.Kg3 Rg2 43.Kf3 Rg6 44.Nf2 1–0. mtra – TT12, internet, 2002.

4.Na3 a5 5.Qa4 Nbd7 (5...Bd7 6.Qb3-/+) 6.Bf4=+ c6 7.Kd1? (better is 7.b5 Nb6 8.Qb3=+) 7...Ne4-+ 8.Nh3?? (8.Ke1 Nc3 9.Qb3-+) 8...Nc3 9.Kc2 Na4 10.Ng5 Qb6 11.g3 Qb4 (12.Rb1 Qc3 13.Kd1 Qd4 14.Bd2 Nc3 15.Kc2 Ne4-+) 0–1. kings – pierre (1985), internet, 2006.

4.a4 Bd6 5.e3 Bd7 (5...Nbd7 6.Nf3+=) 6.f4 (6.Nf3!?=) 6...0-0 (6...Ne4 7.Nf3-/+) 7.Nf3+= b6 (7...a5 8.b5+=) 8.g3 (8.Bd3 a6+=) 8...c5 9.bc5 bc5 10.Bg2 (10.Ba3 Nc6+=) 10...Nc6 (10...Qa5 11.Ne5-/+) 11.0-0 c4 12.Ne5 Na5 13.Nd2 Be5 14.fe5+/– Ne8 15.Qh5 Nb7?? 16.e4 Bc6 17.Rf4?? Qa5+= 18.Rh4 h6 19.Nc4?? Qc3 20.Bh6?? Qa1-+ 21.Bf1 g6 22.Rg4 Ng7 23.Qh4 dc4 24.Qf6 Qd4 25.Kg2 Nh5 26.Kh3. vkramnik (2285) – tbrannon (1845), net–chess.com, 2005.

4.a4 Nbd7 5.Nd2 Bd6 6.Qb3 0-0 7.c4 dc4 8.Nc4 b6 9.Nd6 cd6 10.Ba3 Bb7 11.Nf3 Rc8 12.Rc1 Rc1 13.Bc1 Qc7 14.Ba3 Rc8 15.Qd1?? (better 15.b5-/+) 15...Qc3-+ 16.Nd2 Qa3 17.e3 Rc1 0-1. Aleks - pospiky (2210), lichess.org, 2020. (=1.d4 Nf6 2.b4 d5 3.c3 e6)

4.a4 Be7 5.a5 0-0 6.e3 Nbd7 7.Bd3 e5 8.Nf3? (better 8.Nh3=+) 8...e4-+ 9.Bc2 ef3 10.Qf3 c6 11.Qg3 Ne4 12.Be4 de4 13.0-0 Nf6 14.f4 ef3! 15.Rf3 (15.Rf3 Bd6 Combination; 15.gf3 Bd6 Combination; 15.Qf3 Bg4 Decoy) 15...Bd6 16.Qe1 Bg4 17.Rf2 Ne4 18.Rf1 1-0. lisho (1760) - bertomeeggo (2135), ChessWorld.net, 2018. (=1.d4 d5 2.b4 Nf6 3.c3 e6)

4.a4 Be7 5.h3 a5 6.Bg5 (6.b5!?+=) 6...ab4-/+ 7.cb4 Bb4 8.Nd2 c5 9.dc5 h6 10.Bf6 Qf6 11.Rb1 Bc5 12.e4?? (better is 12.e3-+) 12...Qf2 0–1. Stephen – Janek, internet, 2016. (=1.d4 d5 2.c3 e6 3.b4 Nf6)

4.Qa4 c6 5.e3 b5 6.Qc2 Ne4 (6...a5+=) 7.f3 (7.a4 ba4 8.Bd3 a5 9.Qa4 e5=) 7...Nf6 (7...Qh4!? 8.g3 Ng3-/+) 8.Ne2 (8.a4 ba4 9.e4 a5 10.Ra4 Nfd7+=) 8...Nbd7 (8...a5 9.ba5 Bd6 10.e4+=) 9.a4= a5 10.e4 ab4 11.cb4 ba4 12.Qc6 Rb8 13.Ra4 Rb6 14.Qc3 de4-/+ 15.fe4 Ne4 16.Qe3 Bb4 17.Bd2? Bd2 18.Nd2 f5 19.Ne4+= fe4 20.Qe4 Rf8 21.Qh7+= Nf6 22.Qg7?? Ne4?? 23.Qe5 Rb1-+ 24.Nc1 Rc1 25.Ke2 Nc3 26.Kd2 Na4?? 27.Kc1 Rf2?? 28.Bb5+/– Bd7?? 29.Bc4 Qb6-+ 30.Qh8 Rf8 31.Qh5 Kd8 32.Qh4?? Kc8 33.Qe7 Qb2 34.Kd1 Nc3 35.Ke1 Qc1 (35...Qf2) 0–1. tbrannan – wtomey, net–chess.com, 2001.

4.Qa4 Bd7 5.Qb3+=.

4.Bb2 Bd6 5.Nf3 0-0 6.c4 (6.e3!?=+) 6...Bb4 7.Nc3 (7.Bc3 Be7 8.e3 Nbd7-/+) 7...Ne4 (7...dc4 8.a3 Bc3 9.Bc3-+) 8.Qc2-/+ Nc6 (8...c5 9.cd5 Qa5 10.Rc1 ed5 11.a3 Bc3 12.Bc3 Qa3 13.dc5 Qc5 14.e3-+) 9.e3 Nc3 10.Bc3 Bc3 11.Qc3 Re8 12.g3 (12.Bd3 Qf6=+) 12...dc4-/+ 13.Bc4 Qf6 14.e4 (14.Be2 Bd7-/+) 14...e5 15.d5 Nd4 16.Nd4 ed4 17.Qb2?? (better is 17.Qd3-/+) 17...Re4-+ 18.Be2 (18.Kd2 Qf2 19.Kc1 Re1 20.Re1 Qe1 21.Kc2 Bf5 22.Kb3 Qe3 23.Kb4 a5 24.Ka4 Bd7 25.Bb5-+) 18...Bg4 19.Qb7 (19.0-0 Be2 20.Qb7-+) 19...Re2 20.Kd1 Rb2 (21.Kc1 Rb7 22.Rb1 Qf3 23.Rb3 Qh1 24.Kb2 Rb3 25.ab3 Qh2 26.d6 Qf2 27.Ka3 cd6 28.b4 Be6 29.b5 Qa2 30.Kb4 a5 31.ba6 Rb8; 20...Rf2 21.Kc1 Qg5 22.Kb1 Bf5) 0–1. dugmak – METSAR, ChessWorld.net, 2005.

4.Nd2 Nbd7 5.Qc2 b6 6.e4 de4 7.Ne4 Be7 8.Bb5 Nd5 9.a3 a6 10.Ba4 Bb7 11.c4 Nb4 12.ab4 Bb4 13.Bd2 Be7 14.Nf3 0-0 15.0-0 c6 16.Bb3 b5 17.c5 a5 18.Nfg5 a4 19.Ba2 Ra7 20.f4 g6 21.Ne6 fe6 22.Be6 Kg7 23.f5 Nf6 24.Nf6 Bf6 25.Bc3 Bc8 26.fg6 hg6 27.Bc8 Qc8 0–1. marekt – moori, GameColony.com, 2002.

4.e3 a5 5.Qb3 (5.b5 c5=) 5...Bd6 6.Nf3 0-0 7.Bd3 ab4 8.cb4 Nbd7 9.Nc3 e5 10.Ne5 Be5 11.de5 Ne5 12.Bc2 d4 13.ed4 Be6 14.d5 Nd5 15.Nd5 Qd5 16.Qd5 Bd5 17.0-0 Nc6 18.Bd2 Nd4 19.Bd3 (19.Bb1!?=+) 19...Ra3-/+ (< 19...Ra2 20.Ra2 Ba2 21.Ra1=+) 20.Bb1 Rfa8 21.Bc1 R3a4 22.Bd3 Nb3 23.Rb1 Ra2 24.Re1 Nc1 25.Rbc1 c6 26.Re7 b6 27.Rce1 g6 28.Be4 (28.b5 cb5 29.Bb5 Rb2-+) 28...R8a4 29.Bd5 cd5 30.Rd7 Rb4 31.Rd5 Rbb2 32.Rf1 b5 (33.g4 Kg7-+) 0–1. themonkey – chimpu, GameColony.com, 2002.

4.e3 a6 5.Nf3 Bd6 6.Bd3 0-0 7.Nbd2 Nc6 8.e4 de4 9.Ne4 Ne4 10.Be4 Ne7 11.0-0 Ng6 12.g3 h6 13.Re1 Rb8 14.Bg6 fg6 15.a4 Qf6 16.Re3 b6 17.Qe2 Bb7 18.Nd2 Rbe8 19.f3 h5 20.a5 b5 21.Ne4 Qf5 22.Kg2 g5 23.Kg1 Qh3 24.Ng5 Qf5 25.f4 Be7 26.Ne6 Rf7 27.Nc7 Qd7 28.Ne8 Qe8 29.Bb2 Qd7 30.Qh5 Qc6 31.Qh3 Bc8 32.Qg2 Qd7 33.Rae1 Bb7 34.d5 Bd5 35.Qe2 1–0. pozarski (2055) – PnP (1610), GameColony.com, 2002.

4.e3 b6 5.Nf3= Bb7 6.Nbd2 Bd6 7.Bd3 Nbd7 8.Qb3 0-0 9.Ba3 Re8 10.b5 Qe7 11.Bd6 Qd6 12.0-0 Rec8 13.Kh1 c5 14.bc6 Rc6 15.c4 Rac8 16.Qa4 Qb8 17.cd5 ed5 18.Rab1 Rc3 19.Bf5 g6?? 20.Bd7+– (20...R8c7 21.Bb5+–) 1–0. Caissa – 300SPARTANS, Caissa.com, 2004.

4.e3 b6 5.Nf3 c5 6.bc5 bc5 7.Bd3 Be7 8.0-0 0-0 9.dc5 Ba6 10.Ba3 Qc7 11.Qe2 Bd3 12.Qd3 Nbd7 13.c4 Nc5 14.Bc5 Qc5 15.Nbd2 Rfd8 16.Rfc1 Rac8 17.Nb3 dc4 18.Qd8!? Bd8 19.Nc5 Rc5 20.Kf1 c3 21.Rab1 Kf8 22.Rb8 Ke7 23.Rb7 Kd6 24.Rf7+– Nd5 25.e4 Nb4 26.Rd1 Kc6 27.Rd8 c2 28.Nd4 Kb6 29.Rb8 Ka5 30.Nb3 Ka6 31.Nc5 (31...Ka5 32.Ra7 Na6 33.Ra6) 1–0. pierred – iwonaa2003, Yahoo, 2005.

4.e3 b6 5.Nf3= Be7 6.Bd3 0-0 7.Nbd2 c5 8.bc5 bc5 9.Rb1 c4 10.Be2 Bd7 11.Qc2 Qa5 12.Rb7 (12.Bd1 Nc6=+) 12...Nc6 (12...Ba4!? 13.Qb2 Nbd7-/+) 13.Ne5 Ne5 14.de5 Ba4 15.Nb3 cb3 16.ab3 Rfe8?? (better is 16...Rfb8 17.Rb8 Rb8 18.ba4 Ne4=+) 17.ef6+– (17.ba4?! Ne4+=) 17...Bf6 18.ba4 Rec8 (better is 18...Bc3 19.Kd1 Rec8+–) 19.Bd3?? (19.0-0 Bc3 20.Bd3 g6+–) 19...Bc3?? 20.Kf1 Bf6 21.Qd1 Qc3 22.Ke2 e5 23.Bd2 Qc6 24.Qb3 e4 25.Bb1 d4? 26.ed4 Bd4 27.Qf7 Kh8 28.Rf1 Qa6 29.Ke1 Qa4 30.Qd5 Rd8 31.Qe4?? Qa6?? 32.Qh7 1–0. tromar (1630) – Shuko (1770), GameColony.com, 2002.

4.e3 c6 5.Bd3 Nbd7 6.Nf3 g6 (6...a5!?=+) 7.0-0+= h5 8.Nbd2 Be7 9.a4 Qc7 10.Re1 e5 11.e4 de4 12.Ne4 Ne4 13.Re4 0-0 (better is 13...f5!? 14.Re5 Ne5 15.Ne5 Be6+/–) 14.de5+– Nb6 15.a5 Nd5 16.Qd2 Bf5 17.Re1 Bd3 18.Qd3 Rad8 19.Qc2 c5 20.b5 c4 21.a6 b6 22.Bh6 Rfe8 23.Rad1 Bf8 24.Bf8 Rf8 25.Rd4 Ne7 26.Qe4 Kg7 27.Rc4 Qd7 28.Nd4 Rfe8 29.e6 fe6 30.Ne6 Kh7 31.Rc7 Qd6 32.Qf3 Qc7 33.Qf7 Kh6 34.Qg7 1–0. orane (2110) – cap71 (1960), Caissa.com, 2004.

4.e3 Bd6 5.Nd2 black timed out 1–0. rhometal (2115) – kovanda (2110), net–chess.com, 2014. (=1.d4 Nf6 2.b4 e6 3.c3 d5)

4.e3 Bd6 5.Bd3 0-0 6.Qf3 e5 7.Qg3?? (better is 7.de5 Be5 8.h3-/+) 7...e4-+ 8.Qh4 ed3 9.h3 (9.Nf3 Be7-+) 9...Be6 (better is 9...Re8-+) 10.Kd2 Ne4 11.Qe4 de4 12.f3 f5 13.h4 b6 14.Na3 c5 15.bc5 bc5 16.Nc4 Bc4 17.Ba3 Qf6 18.Nh3 Qh4 19.Rab1 Qg3 20.fe4 fe4 21.dc5 Qg2 22.Kc1 Qh1 23.Kb2 Qh3 24.cd6 Qe3 25.Ka1-+ Qe2 26.Rb2 Qe1 27.Rb1-+ Qe2 28.Bb2?? d2 29.a4 d1Q 30.Ba3 Bd3 31.a5 Qb1 0–1. taito – tjackson (1670), net–chess.com, 2005.

4.e3 Bd6 5.Bd3 0-0 6.Nf3 Nbd7 (6...a5 7.ba5 Ra5 8.0-0=+) 7.0-0= c6 (7...Ne4 8.Qc2 a5 9.Nbd2=) 8.Bb2 (8.Nbd2 a5 9.ba5 Qa5=+) 8...e5 9.de5 Ne5 10.Ne5 Be5 11.Nd2 Qc7 (11...Bg4 12.Nf3=+) 12.Nf3 (12.h3 a5=+) 12...Bg4=+ 13.h3 Bh5 14.g4 Bg6 15.Bg6 (15.Ne5 Qe5 16.Be2 Qe6=+) 15...fg6-/+ 16.Ne5 Qe5 17.Qd4 Qe6 18.a4 (18.Rac1 Qe7=+) 18...Rae8 (18...Qf7 19.a5=+) 19.a5 (19.Qa7 Rf7=) 19...Rf7 (19...a6 20.g5 Nh5 21.Qg4=+) 20.Rae1 Ne4-/+ 21.Kg2 b6 22.f3 Nd6 23.Ba1 Nc4 24.e4=+ Rfe7 25.a6 Qf6 26.Qd3 b5 27.Rf2 ½–½. Brauchart,Elmar – Dunn,Michael, IECC, 1996.

4.e3 Bd6 5.Nf3 =+.

4.e3 Nbd7 5.Nf3 Nb6 6.Bd3= Bd6 7.Nbd2 a5 8.ba5 Ra5 9.e4 de4 10.Ne4 Ne4 11.Be4 Rh5 (11...e5 12.Qc2=) 12.g3 (12.Rb1 0-0=) 12...Qf6 13.0-0 g5?? (better is 13...Ra5=) 14.Ne5!+– g4 (14...Qe5 15.de5) 15.Ng4 (15...Qd8 16.Nf6 Qf6 17.Qh5+–; 15.Qg4?! Re5 16.de5 Be5+–) 1–0. pozarski (2075) – NN, GameColony.com, 2002.

4.e3 Nbd7 5.Nf3 Bd6 6.b5 =+.

4.e3 Nbd7 5.Nf3 Be7 6.Bd3 0-0 7.0-0 Bd6 8.Nbd2 e5 9.e4 ed4 10.Nd4 de4 11.Ne4 Ne4 12.Be4 Bh2 13.Kh2 Qh4 14.Kg1 Qe4 15.Re1 Qg6 16.Qf3 Nf6 17.Be3 c6 18.c4 Rd8 19.Rab1 a5 20.a3 ab4 21.ab4 Bg4 22.Qf4 Qd3 23.c5 Qg6 24.b5 Nd5 25.Qg5 Ne3 26.Qe3 cb5 27.Rb5 Qf6 28.Rb4 Qa6 29.Reb1 Re8 30.Qf4 Bc8 31.Nb5 Qg6 32.Nd6 Re7 33.Qh4 Kf8 34.Nb7 Ra4 35.Rd1 Bb7 36.Qe7 Ke7 37.Rb7 Ke8 38.Rb8 Ke7 39.Rb7 Ke8 40.Rb8 Ke7 41.Rb7 (#3–rep) ½–½. Bestia_03g – Exchess_314, computer chess game, 2000.

4.e3 Ne4 5.Bd3 f5 6.Nf3 Bd6 7.Nbd2 0-0 8.Bb2 Nc6 9.0-0 Qf6 10.g3 Bd7 11.b5 Ne7 12.c4 Be8 13.cd5 ed5 14.a4 Bh5 15.Qb3 Kh8 16.Rae1 g5 17.h3 Bf3 18.Nf3 f4 19.Be4 de4 20.d5 Be5 21.Be5 1–0. marekt – NN, GameColony.com, 2002.

4.e3 Be7 5.Nf3 0-0 6.Bd3 b6 7.Nbd2 c5 8.bc5 bc5 9.dc5 Bc5 10.c4 Ba6 11.0-0 Nbd7 12.Qa4 dc4 13.Bh7 Nh7 14.Qa6 c3 15.Ne4 Be7 16.Nc3 Nc5 17.Qc4 Rc8 18.Rd1 Qa5 19.Bd2 Bf6 20.Rac1 Qa3 21.Nb5 Qa6 22.Bb4 1–0. themonkey (1940) – FBaguyo (1725), GameColony.com, 2002.

4.e3 Be7 5.Nf3 Nbd7 6.Nbd2 Bd6 7.Bd3 0-0 8.e4 de4 9.Ne4 Ne4 10.Be4 Nf6 11.Bg5 Be7 12.Bd3 h6 13.Bf6 Bf6 14.0-0 Qd6 15.Re1 g6 16.Ne5 Be5 17.Re5 f6 18.Qg4 Qe7 19.Rh5 Qg7 20.Bg6 f5 21.Qg3 Rf6 22.Be8 Qg3 23.hg3 Kg7 24.Re1 c6 25.Rh4 Rf8 26.Bh5 Bd7 27.g4 Rf6 28.gf5 Rf5 29.Bg4 Rf6 30.Re5 Raf8 31.f3 Rg6 32.Kf2 Rg5 33.Rg5 hg5 34.Rh5 Kg6 35.Ke3 b6 36.g3 c5 37.dc5 bc5 38.bc5 Rc8 39.Kd4 e5 40.Kd5 Bg4 41.fg4 e4 42.Kd4 e3 43.Rh2 Kf6 44.c4 Re8 45.Re2 Rd8 46.Ke3 Re8 47.Kd3 Re2 48.Ke2 Ke5 49.Kd3 a6 50.a3 a5 51.a4 1–0. marus1 – flippinout, internet, 2001.

4.e3 g6 5.Nd2 (5.Nf3 Nbd7=) 5...Bg7 (5...Bd6 6.Qa4 Bd7 7.b5=) 6.Ngf3 0-0 7.Bd3 Ne4 (better is 7...Nbd7!?=) 8.Ne4+/– de4 9.Be4 Re8 (9...Qd6 10.Qb3+/–) 10.0-0 e5 (10...Nd7!?+/–) 11.Ne5+– Be5 (11...c6 12.Bc2+–) 12.de5 Qd1 13.Rd1 Re5 (13...c6 14.Bb1+–) 14.Rd8 Kg7 15.Rc8 Re4 16.Rc7 (16.Bb2 Kh6+–) 16...Nc6 (16...b6 17.b5 a6 18.Rb7+–) 17.Rb7 Rd8 (17...Kf6 18.f3 Re7 19.Re7 Ke7 20.e4+–) 18.f3 Rd1 (18...Rc4 19.e4 a6 20.Rb6+–) 19.Kf2 Rc4 20.e4 Rc3 21.Bh6! Kh6 22.Rd1 Rc2 23.Kg3 Ra2 24.b5 Nb4 25.Rf7 Nc2 26.Rdd7 Kg5 27.f4 Kh5 28.Rh7 1–0. Trkn – guest2074, ICC, 2004.

4.f3 Bd6 5.Bg5 (5.e4 de4 6.fe4 Ne4+=) 5...0-0 (5...h6 6.Bh4-/+) 6.e3 (6.e4!? de4 7.fe4=) 6...e5 7.g3 (7.de5 Be5 8.Bd3-/+) 7...e4 (7...Re8 8.de5 Be5 9.Ne2-/+) 8.f4 (better is 8.fe4!? de4 9.Bg2=) 8...h6 (8...Nbd7 9.Nd2-/+) 9.Bf6 Qf6 (worse is 9...gf6 10.Qh5+/–) 10.Qb3 c6 11.Nd2 b6 12.h4 c5?? 13.Qd5+– cb4 14.Qa8 bc3 15.Ne4 Qg6 16.Nc3 Qg3 17.Kd1 Bg4 18.Be2 Be2?? 19.Nge2+– Qe3 20.Qa7 Bf4 21.Nf4?? Qf3?? 22.Kc2+– Qf4 23.Qb6 Rc8 24.Qb7 Qf5 25.Kb3 Nc6+/– 26.Kb2 Rb8 27.Qb8 Nb8 28.Rhf1 Qg4= 29.Rae1 Nc6 30.Re8 Kh7 31.Ne2? Qg2?? 32.Rf7= Nd4 33.h5?? Ne2-+ 34.Rff8 Nf4 35.Kc3 Nh5 36.Rf5 Qc6 37.Kd4 Qe8 38.Rh5 Qh5 0–1. jobocc – johnbocc, net–chess.com, 2008.

4.Nf3 Nbd7 5.a4 b6 (5...Bd6 6.Bg5+=) 6.g3 (6.a5 Bd6=) 6...c5+= 7.bc5 bc5 8.dc5 (8.Bg2 Bd6+=) 8...Bc5-/+ 9.e3 (9.Ba3 Rb8-/+) 9...Bb7 10.Na3 0-0 11.Qb3 Qb6 (11...Qb6 12.Qb6 ab6-/+) 0–1. soonermagic – petre, net–chess.com, 2005.

4.Nf3 Nbd7 5.Ne5 Ne5 6.de5 Nd7 7.f4 Be7 8.e3 c6 9.Bd3 f5 10.Nd2 0-0 11.Nf3 c5 12.b5 Qa5 13.Bd2 c4 14.Bc2 Qb5 15.a4 Qc6 (15...Qa5-/+) 16.Ng5? (better is 16.Nd4 Qa6 17.0-0=+) 16...Bg5-+ 17.fg5 Nc5 (17...Ne5!? 18.Bc1-+) 18.Qh5 Ne4 19.Be4 fe4 20.a5 Bd7 21.Rf1 Qc7 22.Rf8 Rf8 23.Ke2 (better is 23.g6 hg6 24.Qg5-+) 23...Qe5 24.Rf1 Rf1 25.Kf1 h6 26.gh6?? (26.Kg1-+) 26…Qh5 (27.h7 Kh7-+) 0–1. vadimus – Grits, Caissa.com, 2004.

4.Nf3 Nbd7 5.Bg5 Bd6 6.e3 0-0 7.Bd3 e5 8.e4 (better is 8.de5!? Ne5 9.Ne5 Be5 10.0-0=+) 8...de4 (8...Qe8 9.ed5 e4 10.0-0 ed3 11.Re1-+) 9.Be4 Qe8 10.Qd3?? (better is 10.Bf5 ed4 11.Kf1 dc3 12.Nc3-/+) 10...ed4 11.Bf6 (11.0-0 Qe4 12.Qd4 Re8-+) 11…Nf6 (11...gf6?! 12.0-0 (12.Qd4?? f5-+; < 12.Nd4 f5 13.Nf5 Nf6 14.Nd6 cd6-+) 12...Ne5 13.Qd4 Nf3 14.Bf3=+) 12.0-0 (12.Nd4 Qe4 13.Qe4 Ne4-+) 12...Qe4 13.Qe4 Ne4 14.Nd4 Bd7 15.f3 (15.Re1 Rae8 16.f3 Nf6-+) 15...Nf6 16.Nd2 (16.Rd1 Nd5-+) 16...Nd5 17.Rac1 (17.Ne4 Be5 18.Rfd1 Rad8-+) 17...Bf4 18.Rfd1 a5 19.a3 (19.b5 Rfe8-+) 19...Ba4 20.g3 (20.Ne4 f5 21.Nc5 Bd1 22.Rd1 Nc3 23.Re1-+) 20...Be3 21.Kg2 Bd1 22.Rd1 Nc3 23.Re1 Bd2 24.Re7 ab4 25.ab4 Nd5 26.Nb5 Ne7 27.Nc7 Ra2 28.Nb5 Bb4 29.Kh3 f5 30.g4 fg4 31.fg4 Rf3 (32.Kh4 Rh2 33.Kg5 h6) 0–1. Ramiz – pierre (2075), internet, 2006.

4.Nf3 Be7 5.Bf4 0-0 6.Ne5 a5 7.a3 ab4-/+ 8.cb4 Bb4!-+ 9.Bd2 Bd6 10.Qb3 c5 11.e3 Ne4 12.Bc3 cd4 13.Bd4 Qa5 14.Nc3? Be5 15.Be5 Nc6 16.f3 Nc5 17.Qb5 Ne5 18.Qa5 Ra5 19.a4 Bd7 20.Bb5 Bb5 21.Nb5 Rfa8 22.0-0 Nc4 23.e4 de4 24.fe4 Nd2 25.Rfd1 Nde4 26.h3 Ra4 27.Ra4 Na4 28.Ra1 Kf8 29.g4 Ra6 30.Rc1 Nac5 31.Kg2 e5 32.Nc7 Ra2 33.Kf3 Ra3 34.Kg2 Nd3 35.Rb1 Nf4 36.Kg1 Rg3 37.Kh2 Rg2 38.Kh1 Ng3# (38...Nf2#) 0–1. pahan – pierre, internet, 2009.

4.Nf3 Be7 5.Bg5 Bd7 6.Ne5 0-0 7.h4 h6 8.Bf6 Bf6 9.Nd7 Nd7 10.Nd2 Bh4 11.Nf3 Be7 12.Qd3 Nf6 13.Ne5 c6 14.e3 Nd7 15.Be2 Bf6 16.Ng6? fg6-+ 17.Qg6 Kh8?? 18.Bd3 Kg8 19.Rh6 Re8 20.Rh7 e5?? 21.Rh8!! Kh8 22.Qh7 1–0. Patrick F – cr50, ChessWorld.net, 2011.

4.Nf3 h6 5.Bf4 Bd6 6.e3 Bf4 7.ef4 a6 (7...0-0 8.Ne5=) 8.a4 Ne4 9.Qc2 (9.Bd3 Qf6=) 9...Nc6 (9...Qf6 10.Qc1=) 10.Nbd2 (10.Bd3 Nd6=) 10...Nd2 (10...Nd6 11.Ne5=) 11.Qd2+= Bd7 12.Ne5 Ne5 13.fe5 b5 (13...Qh4 14.Bd3+=) 14.a5 0-0 15.Bd3 Qh4 (15...f6 16.Qe3+=) 16.0-0-0 f6 17.f4 fe5 18.fe5 Rf2= 19.g3 Rd2 20.gh4 Rd1 21.Kd1 Rf8 22.Rf1 Rf1 23.Bf1 g5 24.h5 Kf8 25.Ke1 c5 26.bc5+– g4 27.Be2 g3? 28.hg3 Be8 29.g4 Kg7 30.Kd2 Kf7 31.Ke3 Kg7 32.Kf4 Kf7 33.g5 hg5 34.Kg5 Kg7 35.h6 Kh7 36.Bd3 Kh8 37.Kf6 (37.Kf6 Bd7 38.Ke7+–) 1–0. katchum (1690) – mpopp, net–chess.com, 2001.

4.Bf4 a5 5.ba5 Ra5 6.a4 Nbd7 (6...Bd6 7.Bd6 Qd6 8.Nf3-/+) 7.g3 Nb6 8.h4 Bd7 9.Nd2 Ba4 10.Qb1 Nh5 11.e3 Bc2! 12.Qb2 Ra1 13.Qa1 Be7 14.Bb5 c6 15.Be2 Nf4 16.ef4 0-0 17.Qc1 Ba4 18.Ngf3-/+ c5 19.0-0 cd4 20.cd4 Qd6 21.Ne5 Rc8-+ 22.Qe1 Bc2 23.Bd1 Bd1 24.Qd1 Nc4 25.Nd3 b5 26.Re1 Qa3 27.Qc2 Nd6 28.Qb1 Nf5 29.Nf3 Rc3 30.Rd1 b4 31.Nfe5 Nd4 32.f5 f6 33.Ng6 hg6 34.fg6 Rb3 35.Nb2 Rg3 36.Kf1 Qf3 37.Ke1 Qe2# 0–1. Friedrich,M (2000) – Dammer,Axel (2400), remoteschach.de, 2004.

4.Bf4 a5 5.b5 Bd6 6.Bd6 cd6=.

4.Bf4 a5 5.b5 Bd6 6.Bd6 Qd6+=.

4.Bf4 Bd6 5.Qd2 Bf4 (5...Ne4 6.Qe3+=) 6.Qf4= 0-0 7.Nd2 Nc6 (7...Qd6 8.Qd6 cd6 9.Ngf3=) 8.Ngf3 Nh5 9.Qh4 Qh4 10.Nh4 Nf6 11.e3 Ne7 12.Bd3 a6 (12...c6 13.Nhf3=) 13.Nhf3+= Bd7 14.a4 c6 (14...a5 15.b5+=) 15.Nb3 b6 (15...Nf5 16.Nc5 Bc8 17.a5+/–) 16.a5 b5 17.Nc5 Bc8 18.Ne5 Rd8 19.Kd2 h6 20.h4 Nd7 (20...Ne8 21.Kc1+/–) 21.Ned7 Bd7 22.g4 Bc8 23.Rag1 White prepares the advance g5 23...g6 (23...f6 24.f4+/–) 24.f4 White intends h5. White plans g5 24...f5 (24...f6 25.g5 fg5 26.fg5+–) 25.h5 Rf8? (better is 25...Kg7+–) 26.hg6 Kg7 27.g5 Rh8 28.Be2 Ng6 (28...hg5 29.Rh8 Kh8 30.Rg5+–) 29.Bh5 e5 (29...Ra7+–) 30.Bg6 Kg6 31.gh6 Kf6 (31...Kf7 32.de5 Rh7+–) 32.fe5 Ke7 33.Rg7 Kf8 34.Rhg1 Be6 35.Ne6 Ke8 36.h7 (36.h7 Rd8 37.Nc7 Kf8 38.Rg8 Rg8 39.hg8Q Ke7 40.Qg7) 1–0. Janek – Tundja, internet, 2017.

4.Bf4 Bd6 5.Bd6 Qd6 6.Nf3 b6 7.e3 Bd7 8.Nbd2 0-0 9.Bd3 c5 10.e4 de4 (worse is 10...cb4 11.e5 Qc7 12.ef6 bc3 13.Nb1+/–) 11.Ne4 Ne4 12.Be4 Bc6 13.Bc6 Nc6 (13...Qc6 14.dc5 bc5 15.0-0=) 14.dc5+= Qd1 15.Rd1 bc5 16.b5 Na5 17.Nd2 c4 18.Ke2 Rfb8 19.Rb1 Kf8 20.Rb4 Exerts pressure on the isolated pawn 20...Ke7 21.Rhb1 (21.Nc4?! Nc4 22.Rc4 Rb5 23.Rc7 Kf6=) 21...Rb6?? (better is 21...Rd8+/–) 22.Ra4+– (22.Nc4?! Nc4 23.Rc4 Rb7+–) 22...Nb7 23.Nc4 (23.Rc4?! Nd6 24.Rc5 Rb7+/–) 23...Nc5 (23...Rc8 24.Nb6 ab6 25.Ra6 Rc3 26.Rb6+–) 24.Nb6 Na4 25.Na4 (25.Na8?! Nc3 26.Kd3 Nb1+=) 25...Kd6 (25...Rc8 26.Rb4+–) 26.Rd1 (26.Rd1 Kc7 27.c4+–) 1–0. pierred (2800) – croach (2265), net–chess.com, 2016.

4.Bf4 Bd6 5.Nh3 h6 (5...0-0 6.e3=+) 6.Bd6 Qd6 7.e3 a6 (7...e5 8.de5 Qe5 9.Nf4=) 8.b5 (8.Nf4 e5 9.de5 Qe5=) 8...ab5 9.Bb5 c6 10.Bd3 b5 11.0-0 Ba6 (11...e5 12.de5 Qe5 13.Nf4=) 12.Nf4 b4 (12...0-0 13.a4=) 13.cb4+= Bd3 (13...Qb4 14.Nd2+=) 14.Qd3 (better is 14.Nd3!? Nbd7 15.a4+/–) 14...Qb4 15.Qc2 Qd6 16.Nc3 Nbd7 17.Na4 (17.a4 e5 18.de5 Qe5+=) 17...0-0 18.Nc5 (18.Rfb1 e5 19.de5 Ne5=) 18...Nc5 19.dc5 Qe5 (19...Qc7 20.Rfb1=+) 20.Nd3 Qf5 21.a4 Ra5 22.Qd2 Rfa8-/+ 23.Nb4 Ne4 24.Qd3 Rc5 25.f3 Nc3 26.e4 de4-+ 27.fe4 Qe4 28.Qe4 Ne4 29.Nd3 Rf5 30.Rf5 ef5 31.a5 c5 32.Ne5 Nd6 33.a6-/+ c4 34.Kf2 c3 35.Nd3 Ne4 36.Ke3-/+ Ra7 37.Nb4 g5 38.g4 Nc5 39.gf5 c2 40.Nc2 Ra6 41.Rb1 Ra8 42.f6? Re8 43.Kf3 Kh7 44.Kg4 Kg6 45.Rf1 Ne4 46.h4 Nf6 47.Kh3 gh4 48.Kh4 Re4 49.Kh3 h5 50.Ne1 Ng4 51.Rg1 Kg5 52.Nf3 Kh6 53.Nh4 Re3 54.Kg2 Ne5?? 55.Nf5+– (55...Kg5 56.Ne3+–) 1–0. pinecrest1981 – eladia12, Caissa.com, 2004.

4.Bf4 Bd7=.

4.Bf4 Be7 5.e3 0-0 6.Nd2 Nbd7 7.Bd3 b6 8.Ngf3 Bb7 9.0-0 Re8 10.Ne5 Ne5 11.de5 Nh5 12.Qh5 g6 13.Qh6 Bf8 14.Qg5 Qg5 15.Bg5 Bg7 16.Nf3 h6 17.Bf6 Bf6 18.ef6 Rac8 19.Ne5 c5 20.b5 c4 21.Bc2 Red8 22.Rfd1 Rc5 23.a4 Kf8 24.f4 g5 25.fg5 hg5 26.Rd4 Ke8 27.Rg4 Rdc8 28.Rg5 Kd8 29.Nf7 Kc7 30.Nh6 Kb8 31.f7 Rf8 32.Rf1 Rc7 33.Rg8 Rcc8 34.Rf6 e5 35.Rf8 Rf8 36.Rg6 Kc7 37.Rg8 Rf7 38.Nf7 e4 39.h4 Kd7 40.Nh6 Black resigned 1-0. qpager (1785) - The Bin Man (1725), ChessWorld.net, 2009. (=1.d4 d5 2.b4 e6 3.c3 Nf6)

4.g3 a5 5.b5+=.

4.g3 b6 5.Bg2 c5 (5...Be7 6.Nf3+=) 6.Nd2 (6.bc5 bc5 7.Nf3 Bd6+=) 6...cb4 7.Qb3 (7.cb4!? Nc6 8.Qa4-/+) 7...bc3 (7...Nc6 8.Ngf3-/+) 8.Qc3 Nc6?? (better is 8...Be7-/+) 9.Qc6+– Bd7 10.Qc3 Rc8 11.Qd3 Bd6 12.Qa6 Qc7+/– 13.Nb3 0-0 14.Bb2 Bb4 15.Nd2? Qc2 16.Bc1?? Qc1 17.Rc1 Rc1 0–1. soonermagic – eddieteijeiro, net–chess.com, 2005.

4.g3 Bd6 5.Bg2 Nc6 (5...0-0 6.Nf3+=) 6.e3 (6.Nf3 e5+=) 6...Ne4 (6...0-0 7.Nf3-/+) 7.a3 (7.Be4 de4 8.Qg4=) 7...Qf6 (better is 7...0-0!?+=) 8.f3+= Ng5 9.f4 (better is 9.e4!?+=) 9...Ne4+= 10.Nf3 0-0 11.Nbd2 Nc3 12.Qc2 Ne4 13.Ne4+= de4 14.Qe4 Rb8 15.Ng5 h6?? 16.Nh7 Qf5 17.Nf8 Kf8 18.Qf5 ef5 19.0-0 Ne7 20.Re1 b5 21.e4 fe4 22.Be4 Bh3 23.Rd1 Nc8 24.Rd2 Nb6 25.Rc2 Re8 26.Re2 g5?? 27.fg5 Nc4? 28.g6 fg6 29.Rf2 Kg7+/– 30.Re2 c6 31.a4 Rf8?? 32.Rf2 Re8+/– 33.Re2 a6 34.ab5+/– ab5? 35.Bd3 Rf8 36.Rf2 Re8+/– 37.Ra7 Be7?? 38.Re2 Kf6 39.Ra6 Bd7 40.d5 Bb4 41.Re8 Be8 42.Ra8 Nd6 43.Bb2 Kf7 44.Ra7 Kg8? 45.dc6?? Bc5-+ 46.Kf1 Ba7 47.Be5 Bc6 48.Bd6-/+ Kf7 49.Bb4 g5 50.h4 g4 51.h5 Kf6 52.Bd2+= Kg7 53.Bc3 Kg8 54.Ke2 Bb8 55.Be1 Bd6-+ 56.Kd2 Kg7 57.Kc2 Kf6 58.Bd2 Bg3 59.Bh6 Bh4 60.Bf4 Bg5 61.h6?? Bh6 62.Bh6-/+ g3 63.Be3 g2 64.Kc3 Bd7 65.Kb4 Bf5. conundrum – jdolan, net–chess.com, 2003.

4.Bg5 Nbd7 5.Bf6 Nf6 6.e3 a6 7.Bd3 b6 8.Nf3 Bb7 9.Ne5 Bd6 10.f4 0-0 11.0-0 c6 12.a4 a5 13.b5 c5 14.Qc2 c4 15.Be2 g6 16.Nd2 Nd7 17.Nd7 Qd7 18.Nf3 f5 19.Ne5 Qe7 20.Qd1 Rf6 21.Rf3 Raf8 22.Rg3 Kh8 23.h4 Rg8 24.Qe1 Be5 25.de5 Rf7 26.h5 Rfg7 27.h6 Rf7 28.Rg5 Qc5 29.Qd2 Bc8 30.Qd4 Qc7 31.Qd2 Rd7 32.Qe1 Rf7 33.Ra2 Bd7 34.Qf2 Be8 35.Qg3 Rd7 36.Bh5 Qc5 37.Be2 Qc7 38.Bh5 Qc5 39.Bg6 Bg6 40.Rd2 Qa3 41.Kh2 Qf8 42.Kg1 Qa3 43.Rc2 Qa1 44.Kh2 Qa4 45.Rg6 Rg6 46.Qh4 Qc2 47.Qh5 Qg2 0-1. beneroby - Tango77, lichess.org, 2017.

4.h4 Bd6-/+ 5.e3 e5 6.a3 Ne4 7.Ne2 Qf6?? 8.f3+/- ed4 9.fe4 dc3 10.Nec3 Bg3+= 11.Kd2 d4 12.ed4+/- Nc6 13.e5?? Qf2+= 14.Kd3 Bf5 15.Kc4 0-0?? 16.Ra2+- Be6 17.d5 Ne5 18.Kb3 Bg4 19.Be2 Bd7? 20.Ne4 Qg2 21.Bd3 Ba4+/- 22.Ka4 Qa2 23.Nbc3 Qa1 24.Qc2 Nd3 25.Ng3+- Nb4?? 26.Kb4 a5 27.Ka4 b5 28.Kb3 b4 29.Bb2 Qh1 30.Nh1 bc3 31.Qc3 a4 32.Kc4 f6 33.Ng3 Rfb8 34.Nf5 Ra6 35.Qg3 g6 36.Nh6 Kg7 37.Bc1 Rb7 38.Nf5 Kf7 39.Nd4 Rab6 40.Nc6 Rb3 41.Qe1 Kg8 42.Bh6 Ra3 43.Qe6 Kh8 44.Qe8 1-0. Friedrich,M (2000) - Rodriguez jr,Lazaro (1965), remoteschach.de, 2004.

5.e3 0-0 6.Bd3 Nbd7 7.Nf3 h6 8.Bh4 Nh7 9.Be7 Qe7 10.0-0 Ng5 11.Ng5 Qg5 12.f4 Qh4 13.Nd2 b6 14.Qa4 c5 15.Bb5 Rd8 (better is 15...Qe7!?+/–) 16.Bc6+– Rb8 17.Qa7 cd4 18.cd4 Qe7 19.Qc7 Kf8 20.b5 Ke8?? (better is 20...Re8+–) 21.Qb8 Qb4 22.Nf3 Ke7 23.Qa7 Qc3 24.Ne5 Qe3 25.Kh1 Qd4 26.Rac1 f6 27.Bd7 Bd7 28.Nc6 (28...Kf7 29.Nd4+–) 1–0. orane (2140) – hbk, Caissa.com, 2004.

5.e3 b6 6.Nf3 c5 7.bc5 bc5 8.Bd3 0-0 9.0-0 Nc6 10.Nbd2 Rb8 11.dc5 Bc5 12.Qa4 Bd7 13.Qh4 (13.Qc2 Qc7=) 13...Be7?? (better is 13...h6 14.Bf4 Rb2=) 14.Bf6+– (14...h6 15.Be7 Qe7 16.Qg3+–) 1–0. Trkn – guest374, ICC, 2004.

5.e3 Ne4 6.Be7 Qe7 7.Bd3 Nf6 8.Nf3 Nbd7 9.Ne5 c6 10.0-0 b5 (better is 10...a5+=) 11.Nc6 Qd6 12.Bb5 a6 13.Ba4 Nb6 14.Ne5 Na4 15.Qa4 Bd7 16.Qa5 0-0 17.Nd2 Bb5 18.Rfc1 Ne4 19.Ne4 de4 20.a4 Bd7 21.Qc5 Qc5 22.dc5 f6 (22...Be8+–) 23.Nd7 Rfd8 24.c6 Rac8 (24...Kf7 25.Rd1 Ke7 26.c4+–) 25.b5 ab5 (25...Kf7 26.b6+–) 26.ab5 Rc7 27.b6 (27...Rc6 28.Rd1+–; 27.Rd1 Rdc8 28.b6 Rc6+–) 1–0. marekt – samsky_73, Yahoo, 2005.

5.e3 h6 6.Bf6 Bf6 7.Nf3 0-0 8.Be2 b6 9.0-0 Nc6 10.Nbd2 Bd7 11.b5 Ne7 12.Bd3 (12.e4 Ng6=) 12...Kh8 (12...c5 13.bc6 Nc6 14.c4=) 13.Ne5 (13.e4 Ng6+=) 13...Be5= 14.de5 c5 15.a4 c4 16.Bc2 f6 17.Nf3 (17...a6 18.ef6 Rf6 19.ba6 Ra6 20.e4=). Vettenburg – Lorenzo, corr ICCF, 1984.

5.f3 Nbd7 6.Bf6 Nf6 (6...gf6?! 7.e4=) 7.Nd2 0-0 8.e3 (8.e4 de4 9.fe4 a5+=) 8...c6 (8...Bd6 9.Bd3-/+) 9.Bd3 Qc7 10.g4 e5 11.Ne2 ed4 (11...e4 12.fe4 Ng4 13.Ng3 de4 14.Be4-/+) 12.Nd4 c5 13.Nb5? Qc6 14.a4 cb4 15.c4 dc4 16.Bc4 Bc5 17.e4 a6 18.Bd5? Nd5 19.ed5 Qd5 20.Ne4 Qe5 21.Nbd6 Bd6 22.Qd6 Qa1 23.Qd1 Qe5 24.0-0 Bg4! 25.Qe2 Qd4 26.Kg2 Bd7 27.Rd1 Qb6 28.Rd7 Qc6 29.Qd2 Qa4 30.Rb7 a5 31.Nc5 Qc6 32.Qg5 Qg6 33.Qg6 hg6 34.Nd7 Rfe8 35.Nc5 Reb8 36.Re7 b3 (36...b3 37.Nb3 Rb3-+) 0–1. Brambino – Madimbu, internet, 2007.

5.Nf3 0-0 6.Ne5 h6 7.Bh4 b6 8.e3 Bb7 9.Qa4 g5 10.Bg3 Nfd7 11.Bb5 Ne5 12.Be5 c6 13.Bd3 Nd7 14.b5 cb5 15.Bb5 Nf6 16.0-0= Ne4 17.f3 Nd6 18.Bd6 Bd6 19.Nd2 a6 20.Bd3 b5 21.Qb3 Qc7 22.g3 Rac8 23.Rac1 Qe7 24.e4 Rc7 25.e5+/– Ba3 26.Rce1 Rfc8 27.Nb1 b4 28.Na3 Rc3+= 29.Qd1 Ra3 30.f4 Ra2 31.Rf2? Rf2-+ 32.Kf2. tundeski (2030) – coora, net–chess.com, 2011.

5.Nf3 a5 6.b5 Ne4 7.Be7 Qe7 8.e3 0-0 9.Bd3 c6 10.0-0 f5 11.Ne5 Nd7 12.f4 Ne5 13.Be4? (13.fe5 cb5 14.Bb5 Bd7+=) 13...fe4?? (better is 13...Nc4 14.Bd3 Ne3-+) 14.fe5+= cb5 15.Qe2 (15.Rf8 Qf8 16.Nd2 Bd7+=) 15...Bd7-/+ 16.Nd2 Qa3 17.Nb3 Rae8 (17...b6!?-/+) 18.Nc5+= Bc6 19.Qd2 b6 (19...Rf5 20.Rf5 ef5 21.Rb1+=) 20.Rf8= Kf8?? (20...Rf8 21.Ne6 Rf5=) 21.Nb3?? (better is 21.Qf2 Kg8 22.Rf1+–) 21...Kg8-/+ 22.Qc2 Rc8 23.Nd2 b4 24.c4?? (better is 24.Nb1 Qa4 25.Qd2-+) 24...Qe3-+ 25.Kh1 Qd4 26.Rd1 (26.Nb3 Qd3 (worse is 26...Qc4 27.Qf2-+) 27.Qd3 ed3-+) 26...Qe5 (26...Qc3 27.Qc1-+) 27.cd5 ed5 28.Qb3 (28.Nb3 e3 29.Nd4 Bd7-+) 28...Bb5 (28...Qc3 29.Kg1-+) 29.Nf1 (29.Qe3 Rc2 30.Nb3 Qf6-+) 29...Rc3 Black plans e3 30.Qb1 e3 31.Ng3 d4 32.Ne4 (32.a3 Ra3 33.Qc2 e2 34.Qc8 Kf7 35.Ne2 Be2-+) 32...e2 33.Nc3 (33.Re1 Bd3 34.Qa1 Be4 35.Re2 d3-+) 33...ed1Q 34.Qd1 dc3 (34...bc3!? 35.h3 Qe2 36.Qd4-+) 35.h3 Qe6 36.Qd8 (36.Kg1 h6 37.a3 Qe3 38.Kh2 Bd3 39.Qb3 Kh7 40.ab4 c2 41.Qd3 Qd3 42.b5 Qd6 43.Kg1 c1Q 44.Kf2 Qcf4 45.Ke2 Qdd2) 36...Be8 37.Qd3 Qa2 38.Qe4 Qf7 (38...Qf7 39.Qd3 Bc6 40.Qd8 Qe8-+) 0–1. tche (2390) – higarra (2525), net–chess.com, 2016.

5.Bf6 Bf6 6.e4 de4 7.Nd2 a5 8.Ne4 ab4 9.Nf6 Qf6 10.cb4 Nc6 11.Bb5 Bd7 12.Bc6 Bc6 13.f3 0-0-0 14.Rb1 Rd4 15.Qc1 Qe5 16.Ne2 Bb5 17.Qb2 Qe3 18.a3 Rhd8 19.Rf1 Rd2 (20.Qd2 Rd2 21.Rf2 Re2 22.Re2 Qe2#) 0–1. Bestia02c – Bringer16b1, computer chess game, 2000.

4.Nd2 c5 5.a4 cd4 6.Bb2 dc3 7.Bc3 Be7 8.Ngf3 0-0 9.e4 Nbd7 10.Qc2 b6 11.Bc4 Bb7 12.0-0-0? (better is 12.Bd3-/+) 12...Rc8-+ 13.Ng5 h6 14.Nf7 (14.Ne6 fe6 15.Be6 Kh8-+) 14...Kf7 15.Rde1 d5 16.ed5 ed5 17.Bd3 Kg8 18.Qb3 Kh8 19.Kd1 Bd6 20.Re6 Bb8 21.Bb1 Re8 22.Bf6 Nf6 23.Rf6 Qf6 24.Nf3 Rc3 25.Qa2 Rf3 26.gf3 Qf3 27.Kd2 Re2 28.Kc1 Qh1 0–1. rhometal (2200) – agostinhoarruda (2500), net–chess.com, 2011.

4.f3 d5 5.Nd2+=.

4.f3 Be7 5.e4= 0-0 6.Bd3 Bd7 (6...e5 7.Ne2=) 7.a4 (7.Ne2 e5=) 7...a6 (7...c5 8.Ne2=) 8.Ne2 c5 9.bc5 dc5 10.dc5 (10.Qc2 h6=) 10...Bc5+= 11.Ba3 (11.e5 Nd5+=) 11...Qb6 (11...Ba4 12.Qa4 Ba3 13.Na3 Qd3 14.Qb3-/+) 12.Bc5 Qc5 13.Qb3 Qe3 14.Qb7? Bc6-+ 15.Qc7 Qd3 16.Nd4 Qe3 17.Ne2 Ra7 18.Qf4 Qf4 19.Nf4 Rd8 20.0-0 Rb7 21.c4 Rb2 22.Na3 Rdd2 23.Nb1 Rd4 24.c5 Nbd7 25.Rc1 Nc5 26.Nd2 Nfd7 27.Nc4 Rb8 28.Na5 Ba4 29.Ne2 Rd2 30.Nc6 Bc6 31.Nc3 Nb3 32.Rd1 Rc2 33.Ra6 Rc3 34.Rd6 Bb5 35.Ra7 Ndc5 36.Ra3 g6 37.h4 Rd3 38.Rd3 Bd3 39.Kf2 Rb6 40.Ke3 Ra6 41.Ra6 Ba6 42.g4 Kg7 43.Kf4 f6 44.g5 e5 45.Kg4 Bc8 (45...Bc8 46.Kg3 fg5 47.hg5 Ne6-+) 0–1. lpjones – seruty, net–chess.com, 2002.

4.Nf3 Be7=.

4.f4 c5 5.Nf3. Janek – Tundja, internet, 2017.

4.f4 d5 5.e3+=.

3.c3 Be7 4.Qc2 0-0 (4...d5 5.Nf3+=) 5.e4= d6 6.Bd3 (better is 6.e5 de5 7.de5=) 6...b6 (better is 6...e5!?=) 7.e5+/– de5 8.de5 Nfd7 (8...Nd5 9.Bh7 Kh8 10.Be4+/–) 9.Bh7+– Kh8 10.Be4 c6 11.Qe2 Bb7?? 12.Qh5 Kg8 13.Qh7 1–0. rodnel – kostaspetidis (2105), net–chess.com, 2006.

4.Nf3 a5 5.Qa4 0-0 6.Bg5 b6 7.Bf6 Bf6 8.e4 Bb7 9.Nbd2 ab4 10.Qb4 e5 11.Ne5 Re8 12.Bb5 Be5 13.de5 Qg5 14.g3 Qe5 15.f3 Qg5 16.Qb3 Qe3 17.Kd1 Nc6 18.Rb1 Ne5 19.Rf1 Re6 20.Bc4? Nc4-+ 21.Nc4 Qd3 22.Nd2 Rd6 23.Rf2 Qe3 24.Re2 Qf3 25.e5 Qf1 26.Kc2 Qe2 27.ed6 Be4 28.Kc1 Bb1 29.Qb1 Qh2 30.Qd3 c6 31.Kb2 b5 32.Qe3 Qg2 33.Qd3 Qf2 34.a3 Re8 35.g4 Re5 36.Qd4 Qd4 37.cd4 Rg5 38.Kc3 Rg4 39.Nb3 Rg6 40.Nc5 Rd6 41.a4 ba4 42.Na4 h5 43.Nb6 h4 44.Nc8 Rd5 45.Ne7 Kf8 46.Nd5 cd5 47.Kb4 h3 48.Kc5 h2 49.Kd5 h1Q 50.Kd6 Qc6 51.Ke5 Qe6 52.Kf4 Qe2 (53.d5 d6 54.Kg3 g5 55.Kh3 f5 56.Kg3 f4 57.Kh3 Qf3 58.Kh2 Qf2 59.Kh1 Qf1 60.Kh2 f3 61.Kg3 Qg2#) 0–1. Bestia02c – Bringer17, computer chess game, 2000.

4.Nf3= b6 5.e3 Bb7 6.Bb5 a5=+ 7.0-0 ab4-/+ 8.cb4 Bb4 9.Bd2 Ra5 10.Bb4 Rb5-/+ 11.a3 Rh5 12.h3 d6 13.Nc3? c5-+ 14.dc5 dc5 15.Qd8 Kd8 16.Rfd1 Ke7 17.Rab1 Bf3 18.gf3 0–1. BIGAL 1971 – Whiterose, ChessWorld.net, 2005.

4.Qd2 Ne4!! (5.Ne4 Bd2 6.Bd2 Qh4-+) 0–1. kings – kostovist, internet, 2006.

4.Bd2-/+.