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TESTL Release 2021-05-10
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 g6

(...)

2.a3 d5 3.Bb2 a6?? 4.Bh8+– f6 5.e3 e5 6.Nf3 Qe7 7.Be2 e4 8.Nd4 Nh6 9.0–0 Qf7 10.Nc3 Bg7 11.Bg7 Qg7 12.Nd5 Kf8 13.c4 f5 14.c5 g5 15.d3 Nc6 16.de4 fe4 17.Bc4 b5 18.cb6 Nd4 19.ed4 c6 20.Nc7 Rb8 21.Ne6 Be6 22.Be6 Rb6 23.d5 Ke7 24.Re1 Qe5 25.Rc1 c5 26.bc5 Re6 27.de6 Qe6 28.c6 e3 29.c7 ef2 30.Kf2 Qe1 31.Qe1 Kf6 32.c8Q g4 33.Qce6 Kg7 34.Q1e5 Kf8 35.Rc8 1–0. pieeater – wee harv, ChessWorld.net, 2011.

2.a3 Nf6 3.Nc3 Bg7 4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.a3 Bg7 4.Nc3).

2.a3 h5 3.e3 Bg7 4.c3 Nc6 5.Bc4 Nf6 6.Ba2 d6 7.Qb3 e6 8.f4 Bd7 9.d4 Qe7 10.Nf3 Ne4 11.a4 0–0–0 12.Na3 Bf6 13.0–0 Rdg8 14.d5?? (better is 14.Bb1 d5 15.Be4 de4 16.Nd2+/–) 14...ed5–+ 15.Qd5 (15.Nb5 Re8–/+) 15...h4 (15...Bc3 16.Rb1 Be6 17.Qe4 Ba2 18.Qe7 Ne7 19.Bb2 Bb1 20.Bc3–+) 16.h3? (better is 16.Qf7 Qf7 17.Bf7–/+) 16...Bc3–+ 17.Rb1 f5 (17...Be6 18.Qe4 Ba2 19.Qe7 Ne7 20.Bb2 Bb1 21.Bc3–/+) 18.b5 Be6?? 19.Qe4 d5 20.Qc2 Qc5 21.Rb3 d4 22.bc6 Qc6 23.Nb5 Kb8 24.Rb1 Bd5 25.Nfd4 Bd4 26.Qc6 Be3 27.Be3 Bc6 28.Na7 Ka8 29.Bg8 Rg8 30.Rb4 Re8 31.Bd4 Re4 32.Nc6 bc6 33.a5 Re2 34.a6 c5 35.Bc5 c6 36.a7 Re8 37.Rb7! Rc8 38.Rfb1 g5 39.Rb8 Rb8 40.Rb8# (40.ab8Q#) 1–0. Eries – pieeater, ChessWorld.net, 2012.

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

2.Bb2 Nc6?? 3.b5 (3.Bh8 Nb4 4.Nf3 d5+–) 3...d5?? (3...Nf6 4.bc6 dc6 5.Nc3+–) 4.bc6 (better 4.Bh8 Nb8 5.Nc3+–) 4...bc6 (4...Nf6+–) 5.Bh8 Ba6 6.e3 (better 6.d4+–) 6...Qd6 (6...Bf1 7.Kf1 f6+–) 7.Ba6 Rb8 8.Qg4 (8.Nc3 e5+–) 8...f5 9.Qg5 (9.Qa4 Rb4 10.Qa5 e5+–) 9...Bh6 10.Qh4 Bg7 11.Nf3 (better 11.Qh7 Qe6 12.Bg7 c5+–) 11...Bh8 (11...Ba1 12.Qh7 Nf6 13.Bf6 Qf6 14.Qg8 Qf8 15.Qg6 Kd7 16.d4+–) 12.d4 (12.Qh7 Kf8 13.Qh8 Rb6+–) 12...Rb4 (12...h6 13.0–0+–) 13.0–0 (better 13.Qh7 Kf8 14.Qh8 c5+–) 13...Nf6 14.Ne5 Ra4 (14...Nh5 15.c3 Ra4 16.Bb7 Be5 17.de5 Rh4 18.ed6+–) 15.Bd3 (15.Bb7!? Kf8 16.c4 Ne4 17.Bc6 Ra5 18.Nd7 Kg8 19.cd5 Nf6+–) 15...Ne4 (15...Nh5 16.Nf3+–) 16.Nc3! Nc3 17.f4 Na2 18.g4 Nc3 (18...Be5 19.fe5 Qe6 20.gf5 gf5 21.Qh7 Qf7 22.Qh8 Kd7 23.e6 Qe6 24.Bf5 Nc3 25.Be6 Ke6 26.Qc8 Kd6 27.Ra4 a6 28.Ra6 Ne2 29.Kg2 Nd4 30.ed4 e5 31.Qd8 Ke6 32.Rc6) 19.Ra4 (19.Qh7 Be5 20.fe5 Ra1 21.ed6 Rf1 22.Kf1 cd6 23.Qg6 Kd8 24.Bf5 Kc7+–) 19...Na4 20.gf5 (20.Qh7 Be5 21.fe5 Qe6 22.gf5 Qf7 23.fg6 Qe6 24.g7 Kd7 25.g8Q Qg4 26.Qg4 Kd8 27.Qhg8) 20...gf5 (20...h5+–) 21.Qh5 Kd8 22.Bf5 Nc3 (22...Qf6 23.Nf7 Ke8 24.Nd6 Kf8 25.Qe8 Kg7 26.Rf3 e5 27.Rg3 Kh6 28.Rh3 Qh4 29.Rh4 Kg7 30.Qf7) 23.Qh7 (23.Nf7 Ke8 24.Nd6 Kd8 25.Qe8) 23...Ne2 (23...e6 24.Qh8 Ke7 25.Qh4 Ke8 26.Bg6 Kf8 27.Qh8 Ke7 28.Qe8 Kf6 29.Qf7) 24.Kh1 (24.Kf2 e6 25.Rb1 Ke8 26.Qf7 Kd8 27.Rb8) 24...Qf6 (24...e6 25.Rb1 Ng3 26.hg3 Ke8 27.Qf7 Kd8 28.Rb8) 25.Nc6! Ke8 (25...Qc6 26.Qg8 Mate attack) 26.Qh8 (26.Qg8 Qf8 27.Bg6 Kd7 28.Qd5 Kc8 29.Na7 Kb8 30.Rb1 Ka7 31.Qb7) 26...Qh8+= 27.Bd7?? (better 27.Rb1 Kf7 28.Bd3+–) 27...Kd7–+ 28.Ne5 (28.Ne5 Kc8 29.Kg2–+). Agiant – Jeezus96, lichess.org, 2019.

2.Bb2 f5?? 3.Bh8 b6 4.e3 a5 5.Bd3 Ba6 6.Bf5 gf5 7.Qh5 1–0. Adjailton (1870) – Sauloestevao, lichess.org, 2020.

2.Bb2 h5 (--> 1.b4 h5 2.Bb2 g6).

2.b5 b6 3.e4 Bb7 4.Bc4 Bg7 5.c3 Be4 6.d3?? (6.Nf3 d5 7.d3 dc4 8.de4 Qd1 9.Kd1 Nf6–/+) 6...Bf5 (better is 6...Bg2 7.Bd5 Bd5–+) 7.Nf3 d5 8.Qb3?? (better is 8.Bb3–/+) 8...dc4–+ 9.Qb4 (9.dc4 Qd3–+) 9...Qd3 10.Ne5 (10.Nfd2–+) 10...Be5 11.Bd2 a5 12.Qa3 (12.ba6 Qe4 13.Kf1 Bh3–+) 12...Qe4 13.Kd1 Qg2 14.Re1 Bd6 15.Qc1 (15.Qa4 Qf2 16.Qc4 Nf6–+) 15...Nf6 (better is 15...Qf3 16.Re2 Bd3 17.Qa3 Qe2 18.Kc1 Ba3 19.Na3–+) 16.Bg5 Bg4 17.Kc2 Qf2 18.Nd2 Qf5 19.Ne4 Ne4 20.Qe3 Ng5 21.Kb2 Qb5 22.Kc2 Bf5 23.Kd2 Ne4 (23...Qb2 24.Kd1 Qc2) 24.Kc1 Ba3 25.Kd1 Qb2 26.Re2 Qa1 27.Kc2 Qa2 (27...Nf2 28.Qd3 Qa2) 28.Kd1 Qb1 (29.Qc1 Qc1) 0–1. dc – Ralf, playchess.de, 2003.

2.c3 f6 3.Bb2 (--> 2.Bb2 f6 3.c3).

2.c3 Nh6 3.Bb2 Bg7 4.d4 0–0 5.e4 d6 (5...d5 6.Nd2=) 6.h3 (6.Nf3 c5=) 6...f5 7.ef5 Bf5 8.g4 (8.Nf3 d5=) 8...Be4=+ 9.f3 Bc6 10.b5 Bd7 11.Bc4 e6 12.Qe2 d5 13.Bd3 a6 14.a4 (14.ba6!? Na6 15.Ba3 Qh4 16.Qf2 Qf2 17.Kf2=+) 14...ab5 15.ab5 Ra1 16.Ba1 c6 17.c4 Re8 18.h4 e5 (better 18...Nf5 19.Qd2 dc4 20.bc6 cd3 21.cd7 Qd7 22.gf5 ef5 23.Kf2 Qa4=+) 19.Kd1?? (better 19.de5 Qc7 20.Kd1 dc4 21.Bc4 Kh8 22.Qd2=) 19...ed4 (better 19...e4 20.fe4 Bg4–+) 20.Qc2? (20.Qd2 dc4 21.Bc4 Be6 22.Be6 Re6–+) 20...Be6 (20...Qa5 21.Ne2 Qa1 22.h5 Bg4 23.fg4 Ng4 24.Ke1 Qa5 25.Nd2–+) 21.Ne2?? (21.h5 dc4 22.Bc4 cb5 23.Be6 Re6–/+) 21...c5 (better 21...dc4 22.Bc4 d3 23.Bd3 Ba1–+) 22.Nf4 Qa5?? (better 22...Qf6 23.Qh2 Bg4–+) 23.Bb2 (better 23.Re1 Bd7 24.Re8 Be8 25.Bb2=) 23...Be5 (23...dc4 24.Ne6 cd3=+ (24...Re6? 25.Bc4 Kh8 26.Be6 Qb5 27.g5+–)) 24.Ne6+– Re6 25.cd5 Re8 (better 25...Rd6+–) 26.g5?? (better 26.Bg6!? hg6 27.Qg6 Kf8 28.Qh6 Bg7 29.Qd6 Kg8 30.Qc5+–) 26...Nf7 (26...Nf5!? 27.Bf5 gf5=) 27.Re1 b6? (27...Rd8 28.h5 A) 28...Rd5?? 29.Bc4 Qd8 30.hg6 (30.Bd5?! Qd5 31.Nd2 Kg7+–) 30...hg6 31.Qe4+– (worse 31.Qg6 Kf8+–; 31.Bd5?! Qd5 32.Qg6 Kf8+–); B) 28...Nd7+–) 28.f4!+– Rd8?? (28...Bf4 29.Re4 Double attack (29.Re8 Pinning; 29.Re8 Deflection; 29.Re4 Decoy)) 29.fe5 (29.Re5?! Ne5 30.fe5 Nd7+–) 29...Rd5 (29...Qa8 30.e6 Nh8+–) 30.e6 Ne5 31.Bg6! hg6 (31...Ng6 32.e7 Passed pawn; 31...hg6 32.Re5 Decoy) 32.Re5! Re5 (32...Re5 33.Qg6 Combination) 33.Qg6 Kh8 34.Qf6 Kh7 35.g6 Kh6 36.Bc1 Kh5 (36...Re3 37.Be3 de3 38.e7 Qa4 39.Ke2 Qc4 40.Ke3 Qc1 41.Nd2 Qe1 42.Kd3 c4 43.Nc4 Qd1 44.Nd2+–) 37.Qe5 Kh4 38.Qb8 (38.g7 Qa4 39.Ke1 Qb4 40.Nd2 Qc3 41.Qh2 Qh3 42.Nf3 Kh5 43.g8Q Qh2 44.Qg5) 38...Qa4 39.Ke1 Qb4 40.Nd2 (40.Kf2 Qb2 41.Bb2 Kg5 42.Qe5 Kh6 43.Bc1 Kg6 44.e7 Kh7 45.e8Q c4 46.Qf7) 40...d3 41.Qh2 Kg4 42.g7 Qd4 (42...Qb2 43.g8Q Qg7 44.Qg7 Kf5 45.Qhe5) 43.g8Q Kf5 44.Qf7 (44.Qh5 Kf6 45.Qhg5) 44...Kg4 (44...Qf6 45.Qhh5 Kf4 46.Qf6 Ke3 47.Qhf3) 45.Qfh5 (45.Qg6) 1–0. giraira – iurquia, gameknot.com, 2018. (=1.c3 g6 2.b4 Nh6)

2.c3 b5 3.Na3 a6 4.Nc2 Bg7 5.Ne3 (5.a4 ba4 6.Nf3 Bb7=) 5...Bb7 6.Qb3 e6 7.d4 (7.Nf3 Nc6=+) 7...d5 (7...Nf6 8.Nf3=+) 8.Nd1 (8.g3 Nf6=) 8...f5 (8...Nf6 9.Nf3–/+) 9.a4 (9.Nf3 Nf6=+) 9...c6 (9...Nd7 10.Nf3=+) 10.a5 Ne7 (10...Nf6 11.Nf3=) 11.Qb2 (11.Nf3!?+=) 11...0–0 12.Bg5 (12.Bf4!?=) 12...Nd7–/+ 13.Nf3 Rf7 (13...e5 14.de5 Ne5 15.Ne5 Be5 16.g3–/+) 14.h3 (14.Bf4!?=) 14...Qe8 (14...e5 15.de5 Ne5 16.Ne5 Be5 17.g3–/+) 15.g3=+ Nf6 (15...e5!?=+) 16.Ne5 Rf8 17.h4 Nh5 (better 17...Ne4=) 18.Be7 (better 18.Bg2+=) 18...Qe7–/+ 19.Bg2 Rad8 20.Qd2 Be5 21.de5 Ng7 (21...c5 22.bc5 Rc8=+) 22.Bh3 (22.Nb2 d4 23.Nd3 c5 24.Bb7 Qb7=) 22...Rd7 (better 22...d4!? 23.Qg5 Qg5 24.hg5 c5–/+) 23.Qg5=+ Qg5 (23...c5 24.Qe7 Re7 25.Bg2=) 24.hg5= Nh5 (24...d4 25.Bg2 dc3 26.Nc3 c5 27.Bb7 Rb7 28.bc5 Rc7+=) 25.g4 (25.Nb2 d4 26.Nd3 Rdd8+–) 25...fg4 (better 25...Nf4!? 26.Bf1 d4=) 26.Bg4+= Ng7 27.Ne3 Re7 (27...c5!? 28.Bf3 d4 29.Bb7 de3 (worse 29...Rb7 30.Ng4+–) 30.Ba6 ef2 31.Kf1 cb4 32.cb4 Rd4=) 28.f3 Ref7 29.0–0–0 Rf4 (29...Rc7 30.Kb2+=) 30.Ng2 Rc4 31.Rd3 Nf5 (better 31...c5 32.Ne3 Rcf4 33.bc5 Ra4+–) 32.e4 (better 32.Bf5 Rf5 33.Ne3 Rg5 34.Nc4 bc4 35.f4+–) 32...de4=+ 33.fe4 Bc8 (33...Ng7 34.Rd4 Rc3 35.Kd2=+) 34.Bf5 (34.Rdh3 Re4 35.Bf5 ef5 (35...Rf5?? 36.Rh7 Rf1 37.Rf1 Kh7 38.Rf7 Kg8 39.Rc7+–; worse 35...gf5 36.Rh7 Rg4 37.Ne1+–) 36.Rh7 Rg4+= (36...Re5?? 37.Rh8 Kf7 38.Rf8 Kf8 39.Rh8 Kf7 40.Rc8+–)) 34...ef5= 35.ef5 (better 35.Rdh3 Rf7 36.Rd3=) 35...Rf5?? (35...Bf5 36.Rg3 Be4–+) 36.Rd8?? (better 36.Ne3 Be6 37.Rd8 Kg7 38.Nc4 Bc4 39.Rd7 Kg8 40.Re1+–) 36...Rf8+= 37.Rf8 Kf8 38.Kc2 (better 38.Rh7!? Rc3 39.Kb2+=) 38...Kg7=+ 39.Ne3 Re4 40.Kd2 (40.Kd3 Re5 41.Rg1 c5=+) 40...Re5–/+ 41.Ng4?? (better 41.Rg1–/+) 41...Rd5 (better 41...Bg4!? 42.Rc1–+) 42.Ke3 Rd8 (better 42...Bg4 43.Kf4 Bd7–+) 43.Ne5=+ Re8 (43...c5 44.bc5 Rd5 45.Ke4 Rc5 46.Kd4=+) 44.Kd4= Rd8 45.Ke4 (45.Ke3 c5 46.bc5 Rd5=+) 45...Bf5 46.Kf4 Rd2 47.Nf3 Rf2 48.Ke3 (48.Re1 h5 49.gh6 Kh6=) 48...Rc2 49.Kd4 Kg8 (49...Be6 50.Re1 Bd5 51.Ne5=+) 50.Ne5 (50.Re1 Kf8=) 50...Rd2 51.Ke3 Rc2 52.Kd4 Rd2 53.Ke3 Rc2 (53...Rd6 54.Kf4=+) 54.Kd4–/+ Rd2 (54...Re2 55.Rh4 c5 56.Kd5 cb4 57.cb4 Kg7=+) 55.Kc5 (better 55.Ke3 Rd6 56.Kf4=+) 55...Re2?? (better 55...Rd5 56.Kb6 Re5 57.Ka6 c5–/+) 56.Nc6+= Rc2?? (better 56...Re3 57.Rd1 Kf7+–) 57.Ne7+– Kf7 (57...Kg7 58.Nf5 gf5 59.Kb6+–) 58.Rh7 (58.Nf5?! gf5 59.Kb6 Rc3 60.Ka6 f4 61.Kb5 Kg6+–) 58...Ke6 (58...Ke8 59.Nd5 Rg2+–) 59.Nd5 Ke5 (59...Bd3 60.Re7 Kf5 61.Ne3 Kg5 62.Nc2 Bc2 63.Kb6+–) 60.Re7 Be6 61.Nc7 Kf5 (61...Rc3 62.Kb6 Rc4 63.Ka6+–) 62.Ne6 Kg4 (62...Rc3 63.Kb6 Rc4+–) 63.Kb6 Rc3 64.Rg7 (64.Ka6 Rc8 65.Kb7 Rc4+–) 64...Rc4 (64...Kf5 65.Nc5 Rc4 66.Na6 Kg5 67.Rf7+–) 65.Rg6 Rb4 66.Ka6 (better 66.Rf6 Kh3 67.Ka6 Rc4+–) 66...Kf3 (66...Kf5 67.Rf6 Ke5 68.Kb7+–) 67.Rg8 (67.Rf6 Ke3 68.g6 Rg4 69.Kb5 Rg1+–) 67...Rb1 68.Rf8 Kg4 69.Rf4 (69.g6 Re1 70.Rf6 Re4 71.g7 Re5 72.g8Q Kh5 73.Nf4 Kh4 74.Rh6 Rh5 75.Rh5) 69...Kg3 70.g6 Kg2 71.g7 Kg1 (71...Kh3 72.g8Q Rg1 73.Qg1 b4 74.Ng5) 72.g8Q Kh1 (72...Kh2 73.Rh4) 73.Rh4 1–0. megarex – mister_mxyzptlk, gameknot.com, 2018. (1.c3 g6 2.b4 b5)

2.c4 f5 3.h4 (3.Nc3 e6+=) 3...Kf7 (3...Nc6!?+= should be considered) 4.g4 (better is 4.Nf3!?+= is interesting) 4...Bg7= Black threatens to win material: Bg7xa1 5.Nc3 fg4 6.f3 White threatens to win material: f3xg4 6...Nh6 7.Kf2? (better is 7.fg4 is a viable option 7...Ng4 8.Qb3+=) 7...Rf8 (7...d6!?–/+) 8.f4 ½–½. Plantet,Sebastien (2325) – Housieaux,David (2250), St Lorrain op U18 2nd, 2000. (=1.c4 g6 2.b4)

2.d4 a5 3.b5 Bg7 4.Bb2 d6 5.e4 Nf6 6.Nd2 0–0 7.Ngf3 Nbd7 8.Bd3 c5 9.bc6 bc6 10.0–0 c5 11.c3 Nh5 12.g3 cd4 13.cd4 Nc5 14.Bc4 Bg4 15.Qc2 Na6 16.Rab1 Nb4 17.Qb3 Rb8 18.Ba1 Qd7 19.a3 Nc6 20.Bb5 Bf3 21.Nf3 (worse is 21.Qf3 Rb5 22.Rb5 Nd4 23.Bd4 Qb5+=) 21...Qg4 22.Qe3 (worse is 22.Bc6 Rb3 23.Rb3 Rc8–/+) 22...Nb4 23.Ba4 Na6 24.Kg2 Nf6 25.Nd2 Qh5 26.f3 Bh6 27.Qe2 Qg5?? (better is 27...Nc7+/–) 28.f4+– (28.Qa6?! Qd2 29.Kh3 Be3=) 28...Qh5 29.Qa6 Ng4 30.Qe2 Qh2 31.Kf3 Qh5 32.Rh1 Nh2 33.Kf2 Rb1 34.Rb1 Qh3 35.Nf1 g5 36.Bd7! e6 37.d5 gf4 38.Rb3 Rd8 39.Ba4 f3 40.Rf3 Rc8 41.Rc3 Rb8 42.Ne3?? Be3+/– 43.Ke3 e5 44.Kd2 Rb1 45.Bd7 Qh6+= 46.Kd3 Ra1 47.Qf2 Rd1 48.Kc4 Rd4 49.Kb5 Re4 50.Be6 Qg6?? 51.Bf5 Qf6?? 52.Bh7! Kg7 53.Qh2 Qf1 54.Kb6 Re2 55.Bd3 Qa1 56.Qh7 Kf6 57.Qh6 Ke7 58.Rc7 Ke8 59.Qh8 1–0. Simonyi,Z (2260) – Govciyan,P (2390), Spring Festival, Budapest HUN, 2008. (=1.d4 g6 2.b4)

2.e4 a5 3.Bb2 f6 (3...Nf6 4.b5 Bg7=) 4.g4?? (4.b5!?+–) 4...h5 (4...ab4!? 5.a3 e6–/+) 5.g5 (5.b5 d5 6.gh5 Rh5+=) 5...e5 (5...ab4 6.Nf3 Rh7 7.Nh4 fg5 8.Ng6=) 6.gf6 (6.Nf3!? ab4 7.gf6 Nf6 8.Ne5+= (worse 8.Be5 Nc6–/+)) 6...Nf6=+ 7.f3? (better 7.Nf3!? d6 8.b5=) 7...Bd6 (7...Ne4 8.Be5 Qh4 9.Ke2–+) 8.b5 (better 8.Nh3 ab4 9.Rg1–/+) 8...h4?? (better 8...Ne4 9.Nh3 Qh4 10.Ke2 Nc5–+) 9.Nc3 Bb4 10.a3 Bc3 11.Bc3 d6 12.b6 (better 12.d4!? Nbd7 13.Qd2+–) 12...cb6= 13.Bb5 (13.Nh3 Nc6=+) 13...Bd7=+ 14.Qe2 Nh7 (14...Kf8!?–/+) 15.Bc4 (15.f4 Bb5 16.Qb5 Nc6 17.fe5 Rf8+–) 15...b5 (15...Qc7 16.Bb3=) 16.Bd5 (16.Bb5 Nc6 17.f4+=) 16...Ra7 (better 16...Nc6=) 17.f4 h3? (better 17...Nf6!? 18.fe5 de5 19.Be5 Nc6+–) 18.fe5 de5?? (18...Qh4 19.Kd1 Rf8 20.e6+– (20.ed6?? Bg4 21.Kc1 Be2 22.Ne2 Nf6–+)) 19.Be5 (better 19.Qf2 Nf6 20.Qa7 Nd5 21.ed5 Qh4 22.Qf2 Qe4 23.Qe3 Qd5 24.Qe5 Qe5 25.Be5+–) 19...Rf8 20.Bd4 b6 21.Qe3 (better 21.Nf3!? Bc6 22.0–0–0+–) 21...Qh4 22.Ke2 (22.Qg3 Qg3 23.hg3 Nf6 24.Bf6 Rf6 25.Nh3 Nc6+–) 22...Qg4 (better 22...Nf6 23.Nf3 Bg4 24.Bf6 Bf3 25.Qf3 Rf6+=) 23.Nf3?? (better 23.Kd3 Be6 24.Qg3 Qg3 25.hg3+–) 23...b4?? (better 23...Qg2 24.Qf2 Bg4 25.Qg2 hg2–+) 24.Bb6 (better 24.Rhg1 Bb5 25.d3+–) 24...Bb5 (24...Qg2 25.Qf2 Bg4 26.Ba7 Bf3 27.Kd3 Qf2 28.Bf2 Bh1 29.Ba7 Rf3 30.Kc4+–) 25.d3 Rd7?? (better 25...Qg2 26.Qf2 Ra6+–) 26.Rhg1+– Qh5 (26...Qf4 27.ab4 Qe3 28.Be3 ab4 29.Ra8+–) 27.ab4 a4 (27...Re7 28.Bc5 Rf3 29.Qf3 Qd5 30.Be7+–) 28.Bc5 White intends e5 28...Rf6 29.Bd4 White prepares the advance e5 (better 29.c4!? Bc6 30.b5 Bb7 31.Ra4 g5+–) 29...Rf8 (29...Rff7 30.Be6 Nc6+–) 30.Kd2 (better 30.c4 Bc6 31.Bc5+–) 30...Rf3–/+ 31.Qe2 Na6 (better 31...Nc6 32.Bc3 Ne7–/+) 32.e5?? (better 32.Rg6! Qg6 33.Qf3 Qg2 34.Qg2 hg2 35.c4 Nb4 36.Kc3 (worse 36.cb5 Nd5 37.ed5 Rd5=) 36...Nd5 37.ed5+–) 32...Rd5–+ 33.e6 (33.Bc3–+) 33...Rd4 34.Rae1 Nb4 35.c3 Rdd3 36.Kc1 Rc3 37.Kd2 (37.Kb1 Qf5 38.Qe4 Bd3 39.Ka1 Ra3 40.Kb2 Ra2 41.Kc1 Qc5 42.Qc4 Qc4 43.Kd1 Qc2) 37...Be2 (37...Qd5 38.Qd3 Qd3) 38.Re2 (38.Rc1 Rfd3 39.Ke1 Rc1 40.Kf2 Qf3) 38...Qd5 39.Ke1 Rc1 0–1. trooper2cdo – venaverme, gameknot.com, 2019. (=1.e4 g6 2.b4 a5)

2.e4 c6 3.Bb2 (3.Nf3 Bg7 4.d4 d5+=) 3...Nf6= 4.Bc4 (better is 4.e5 Nd5 5.a3=) 4...Ne4?? (4...Bg7 5.e5 Nd5 6.Qf3=) 5.Qf3 (5.Bh8 d5 6.Bd3 Qb6 7.Be4 de4+–) 5...f5?? (better is 5...Ng5 6.Qe2 Rg8=+) 6.Bh8+– d5 7.Bd3 Qb6 8.Be4 fe4 9.Qc3 Na6 10.Bd4 Nb4 11.Bb6 ab6 12.Qb4 Bg7 13.c3 Ra7 14.Qb6 Ra4 15.Qc7 Ra8 16.f3 e3 17.de3 Bh6 18.f4 g5 19.f5! g4 20.f6! ef6 21.Qh7 Be3 22.Qh8 Kd7 23.Qg7 Ke6 24.Qg4 Kd6 25.Qg3 Ke7 26.Qe3 Kf7 27.Nf3 b6 28.0–0 Ba6 29.Ng5 Kg6 30.Qf4 fg5 31.Qf7 Kh6 32.Rf6 1–0. colinbates – wralph, net–chess.com, 2003.

2.e4 d6 3.d4 Bg7 4.Nc3 f5 5.ef5 Bf5 6.Bd3 Qd7 7.Nge2 Nf6 8.0–0 0–0 9.Bf5 Qf5 10.Ng3 Qd7 11.Bg5 Nc6 12.b5 Nb4 13.Bf6 Bf6 14.a3 Bd4 15.Qd4 Nc2 16.Qc4 d5 17.Nd5 Na1 18.Nf6 Kg7 19.Nd7 Rfd8 20.Qd4 1–0. iamwillow (1625) – eem63 (1670), Hourly Blitz Arena, 2019.

2.e4 e5 3.c3 Nf6 4.d3 Bg7 5.Nf3 d6 6.Be2 Bg4 7.h3 (7.0–0 0–0+=) 7...Bf3 8.Bf3 a6 9.0–0 0–0 10.Be3 Nc6 11.Nd2 Nd7 (11...d5 12.ed5 Nd5 13.Ne4+=) 12.g3 (12.a4 Ne7+/–) 12...Ne7 (12...f5 13.ef5 gf5 14.Qb3 Kh8 15.Nc4=) 13.Qb3 Kh8 14.Nc4 (14.a4 c6+=) 14...f5= 15.ef5 Rf5? (better is 15...Rb8+=) 16.Bb7+– Rb8 17.Ba6 (17.Na5 c5+–) 17...Nd5? (17...d5 18.Na5 d4 19.Bd2+/–) 18.Nd6 (better is 18.a4!?+–) 18...Ne3+/– 19.Nf5 Nf5 20.Qd5 Nb6 (better is 20...Nd6!?+/–) 21.Qd8+– Rd8 22.a4 Nd6 23.Ra3 (23.c4 e4 24.c5 Ba1 25.Ra1 ed3 26.cb6 cb6 27.Bd3 Nc8+–) 23...Nf5? (better is 23...Ra8 24.b5 Nd7+/–) 24.a5 Nd5 (24...Nd7 25.Bb5+–) 25.Bc4 (25.Bb7 Kg8+–) 25...Nf6 (25...Nde7 26.b5+–) 26.a6 (26.Re1 Nd6+–) 26...Nd6 27.a7 Ra8 28.g4 (28.Ra6!? Nc4 29.dc4 e4+–) 28...Nc4 29.dc4 Nd7? (29...Kg8 30.Re1+–) 30.c5 (30.Rd1!? Nf8 31.b5 h6+–) 30...e4 31.Re1 Nf6 32.b5 Nd5 (32...Nd7 33.Re4 Bf8+–) 33.c4 Nc3 (33...Bd4 34.cd5 Bc5+–) 34.b6 cb6 35.cb6 Bd4 36.b7 Ra7 37.b8Q (37...Kg7 38.Ra7 Ba7 39.Qa7 Kf8 40.Qa3 Ke8 41.Qc3 Kd7 42.Qd4 Kc6 43.Qd5 Kc7 44.Qc5 Kd7 45.Rd1 Ke6 46.Qc6 Kf7 47.Rd7 Kf8 48.Qc8) 1–0. Caissa – Mimi2000, Live Game Caissa's Web, 2004.

2.e4 e6 3.Nf3 (3.a3 Bg7 4.d4 e5 5.de5 Be5+=) 3...Nf6 (3...Bb4 4.Be2=) 4.Bb2 (4.e5 Nh5 5.c3 d6+=) 4...Bg7 (4...Bb4 5.e5 Nd5 6.c4=+) 5.c3 (5.Bd3 d5+=) 5...0–0 (5...Ne4 6.Be2–/+) 6.g3 (better 6.e5!? Nd5 7.a3=) 6...Ne4–/+ 7.Rg1 (7.d3 Nd6–/+) 7...d5–+ 8.Bh3 Nc6 9.Nd4 (9.d3 Nd6–+) 9...Ng5 (9...Nd4 10.cd4 Qd6 11.Qb3–+) 10.Bg4 (better 10.Nc6 Qe8 11.Bg2 Qc6 12.d3–/+) 10...Ne4 11.Bf3?? (11.Bh3 Nd4 12.cd4 Qd6–+) 11...Ng5 12.Bg4 Ne5 13.b5?? (13.Be2–+) 13...Ng4 14.Qg4 e5 15.f4 (15.Qh4 Bf6 16.Qh6 ed4 17.Kd1–+) 15...Bg4 16.fg5 ed4 17.Rf1 Re8 (17...Re8 18.Kf2 dc3 19.Bc3 d4–+; 17...Qe7 18.Kf2 Qe2 19.Kg1 Bh3 20.Rf2 Qd1 21.Rf1 Qf1) 0–1. Fallatah,Eiman – Al Durazi,Zainab Ali, World Blitz Women, 2017. (=1.e4 g6 2.b4 e6)

2.Nf3 a6 3.d4 Nf6 4.Bf4 h5 (4...Nc6 5.c3=) 5.Nc3 Bh6 6.e3 Nc6 7.Rb1 a5 (7...Bf4 8.ef4 d5 9.b5 ab5 10.Bb5=) 8.a3 (8.Bh6 Rh6 9.b5 Nb8+/–) 8...b6 (8...Bf4 9.ef4 ab4 10.ab4=) 9.Bc4 (9.Bh6 Rh6 10.b5 Na7+/–) 9...Ba6 (better is 9...Bf4 10.ef4 ab4 11.ab4 0–0=) 10.b5+– Bb7 (10...Bf4 11.ef4 (11.ba6?! Bh6+=; 11.bc6 Bc4 12.cd7 Qd7 13.ef4 Qg4=+) 11...d5 12.Bd3+–) 11.bc6 dc6 12.0–0 (better is 12.Ne5 e6 13.Bh6 Rh6 14.Qf3+–) 12...0–0 (12...Bf4 13.ef4 0–0 14.Ne5+–) 13.Qd3 (13.Bh6 Re8+–) 13...Ba6 (13...Bf4 14.ef4 e6+–) 14.Bh6 Re8 (14...Bc4 15.Qc4 b5 16.Qc6 Qe8 17.Qc7 b4+–) 15.Ba6 (15.Qg6! Kh8 16.Qg7) 15...Ng4 16.Bb7 (better is 16.Bf4!? Qd7 17.Ne4 c5+–) 16...Rb8 (16...Nh6 17.Bc6 Qd6 18.Qc4+–) 17.Bc6 Nh6 18.Be8 Qe8 19.Rb5 (19.Qc4 Rc8+–) 19...Kf8 (19...c6 20.Rb2 b5 21.Ne4+–) 20.Rfb1 Ng4 21.Ne5 e6 (21...Ne5 22.Re5 e6 23.d5+–) 22.e4 (22.Ng4 hg4 23.Ne2 Kg8+–) 22...Rc8 23.Qc4 Qe7 (23...Kg8 24.Ng4 hg4 25.Ne2+–) 24.h3 (better is 24.Ng4 hg4 25.Rb6 Qa3+–) 24...Ra8 (24...Ne5 25.de5 Rd8 26.Rd1+–) 25.hg4 Rb8 26.d5 (better is 26.Nc6 Qe8 27.Nb8 Qb8 28.gh5 Qd8+–) 26...Qa3 27.Qc7 Re8 28.Qf7 1–0. Buresch,Rene – XYZ,Alex, remoteschach.de, 2002.

2.Nf3 Nc6 3.g4 (3.Bb2 Nf6 4.b5 Na5+=) 3...e5 (better is 3...Bg7 4.d4 Nb4–/+) 4.Ng5?? (better is 4.b5 Na5 5.d4=) 4...Nb4 (4...Qg5 5.b5 Nce7 6.h3–+) 5.Na3?? (5.Nf3 d5 6.h3 Bd6–/+) 5...h6 (5...Qg5 6.d4 Qg4 7.Nb5–+) 6.d3?? hg5–+ 7.c4 Na6 8.Nb5 Bb4 9.Nc3 Bc3 10.Bd2 Bb4 11.Bb4 Nb4 12.h3 Na2! 13.Qc2 Nb4 14.Rc1 Nc2 15.Rc2 c5 16.e4 Qa5 17.Ke2 f5! 18.gf5 gf5 19.ef5 d6 20.f3 Bf5 21.d4 cd4 22.h4 Bc2 23.Kf2 d3 24.Bd3 Bd3 25.hg5 Rh1 26.g6 Bc4 (26...Bc4 27.f4 Qd2 28.Kg3 Qf4 29.Kg2 Bd5; 26...Qc5 27.Kg3 Qg1) 0–1. jrameau – alechene, net–chess.com, 2001.

2.Nf3 Nf6 (--> 1.b4 Nf6 2.Nf3 g6).

2.h3 Bg7 3.c3 a6 (3...Nf6 4.d4=+) 4.Nf3 Nc6 5.Na3 (5.d4 d5=) 5...Na7 (5...Nb4 6.e4=+) 6.Nc4 (6.e4 d5 7.e5 Bf5+=) 6...e6 (6...Nf6 7.g3=) 7.e3 Ne7 8.d4 d5 9.Nce5 0–0 10.a4 (10.Bd3=) 10...Be5 (better 10...f6!? 11.Ng4 h5=) 11.de5+= c6 12.a5 Bd7 13.Qd4 Kh8 (13...Nb5 14.Qc5+–) 14.Ng5 (14.e4 Nb5 15.Qc5 Ng8+–) 14...Ng8 (14...Nf5 15.Qf4+=) 15.Qg4 (15.e4 Qc7+–) 15...Nh6? (better 15...f6 16.Nf3 c5+=) 16.Bd3?? (16.Qh4 f6 17.Qh6 fg5+–) 16...f6 (better 16...Ng4 17.Nf3 Nh6 18.e4–+) 17.ef6?? (better 17.Qh4 Kg7 18.e4 fe5 19.Ne6 Be6 20.Bg5+– (20.Qh6?! Kg8+=)) 17...Ng4–+ 18.hg4 Qf6 19.Nf3 (19.Rh7 Kg8 20.Kd1 Qg5 21.Rd7 Rf2 22.Be2–+) 19...Qc3 20.Ke2 Qb4 (better 20...Qa1 21.Bg6 h6 22.g5–+) 21.Bd2 (21.Ne5 Be8 22.Ba3 Rf2 23.Kf2 Qd2 (23...Qa5 24.Nf7 Bf7 25.Bb2 Kg8 26.Ra5+–) 24.Be2 Kg8–+ (24...Qa5 25.Nf7 Bf7 26.Bb2 Kg8 27.Ra5+–)) 21...Qd6 (better 21...Qg4 22.Rag1 e5 23.Rh4–+) 22.g3 (22.Bg6 e5 23.Rh7 Kg8–+) 22...b5 (better 22...e5 23.Ng5 Qf6 24.Rh7 Kg8 25.Ra4–+) 23.ab6 Nb5 (better 23...e5!? 24.Nh4 e4 25.Bc3 Kg8 26.ba7 Bg4 27.Ke1 ed3 28.f4–+) 24.Ng5 (24.Bg6 e5 25.Bh7 Kg7–+) 24...Qb8 (24...e5 25.Nh7 Bg4 26.Ke1–+) 25.Bb4 (25.Rh7 Kg8–+) 25...Qb6 (better 25...Qe5 26.Bb5 Qb2 27.Bd2 Qb5 28.Ke1–+) 26.Bf8 (26.Rh7 Kg8 27.Rd7 Nd4 28.ed4 Qb4–+) 26...Nc3 (26...Rf8 27.Rh7 Kg8 28.Rah1 Nc3 29.Kf1–+) 27.Kf1 Rf8 28.Rh7 (28.Nh7 Rd8 29.Nf6 Kg7 30.g5–/+) 28...Kg8 29.Ra6 (29.Re1 Ne4! 30.Be4 Qb5 31.Kg1 de4 32.Rd7 Qg5–+) 29...Qb7 (better 29...Qe3! 30.Bf5 Qe2 (30...gf5?! 31.fe3 fg4 32.Kg2+=; worse 30...ef5 31.fe3 fg4 32.Kg2+=; 30...Qg5 31.Rd7 gf5 32.Raa7 fg4 33.Rg7 Qg7 34.Rg7 Kg7 35.Ke1–+) 31.Kg1 gf5 32.Rd7 fg4–+) 30.Kg2 (30.Rh6 Rf6 31.Nh7–+) 30...Qc8 (better 30...Qb2 31.Kh3 Qc1–+) 31.Ra7+– Rf6 (31...Nd1 32.Rad7 Rf2 33.Kh3 Qd7 34.Rd7 Rf6+–) 32.Rad7 (better 32.Rhd7 Qe8 33.Rg7 Kh8 34.Rh7 Kg8 35.Rag7 Kf8 36.Rh8 Kg7 37.Re8+–) 32...e5?? (32...Qf8 33.f4 e5 34.fe5 Rf2 35.Kh3 Ne2 36.Be2 Re2+–) 33.Rhg7?? (better 33.Rdg7 Kf8 34.Rc7 Qc7 35.Rc7+–) 33...Kf8?? (33...Kh8 34.Rc7 Qe8 35.Rh7 Kg8 36.Rcg7 Kf8 37.Rh8 Kg7 38.Re8 e4 39.Re7 Kf8+–) 34.Bg6 (34.Nh7 Ke8 35.Rge7) 34...Ne4?? The backward pawn on f2 becomes a target (34...Qd7 35.Rd7 Rg6 36.f4+=) 35.Bf5 (35.Nh7) 35...Qa8?? (better 35...Qd7 36.Rd7 Ng5+–) 36.Ne6 (36.Nh7 Ke8 37.Rge7) 36...Ke8 37.Nc7 (37.Rge7) 37...Kf8 38.Na8 (38.Rh7 Kg8 39.Be6 Re6 40.Rdg7 Kf8 41.Ne6 Ke8 42.Re7) 38...c5 39.Be4 de4 40.Nc7 c4 41.Nd5 (41.g5 Rf2 42.Kf2 c3 43.Rdf7) 41...Rc6 (41...Rf3 42.Rge7 Rf7 43.Rf7 Kg8 44.Nf6 Kh8 45.Rh7) 42.Nc3 (42.Rge7 Rc8 43.Nf6 c3 44.Rf7) 42...Re6 (42...Ra6 43.Ne4 Rh6 44.Rdf7 Ke8 45.Ng5 Rh8 46.Ne6 Rh2 47.Kh2 c3 48.Re7) 43.Ne4 Ke8 (43...Rh6 44.Rdf7 Ke8 45.Ng5 Rh8 46.Ne6 Rh2 47.Kh2 c3 48.Re7) 44.Rc7 (44.Nc5 Rf6 45.Rde7 Kd8 46.Nb7 Kc8 47.Re8) 44...Kf8 45.g5 (45.Ng5 Re7 46.Rce7 c3 47.Ne6) 45...Ke8 (45...Ra6 46.Nf6 Rf6 47.gf6 c3 48.Rc8) 46.Rc4 (46.Rg8) 46...Kf8 47.Rcc7 Ke8 (47...Rc6 48.Rgf7 Kg8 49.Nf6 Rf6 50.gf6 e4 51.Rg7 Kf8 52.Rc8) 48.Nf6 (48.Rg8) 48...Kd8 (48...Rf6 49.Rc8) 49.g4 (49.Rgd7) 49...e4 (49...Rf6 50.gf6 e4 51.g5 Ke8 52.Rg8) 50.Kg3 (50.Rgd7) 50...Re5 (50...Rd6 51.Ra7 Rd7 52.Rgd7 Kc8 53.Ra8) 51.Rcd7 (51.Rgd7) 51...Kc8 52.Kf4 (52.Rg8 Re8 53.Re8) 52...Re6 (52...Re8 53.Ne8 Kb8 54.Rd8) 53.Ne4 (53.Rg8 Re8 54.Re8) 53...Rc6 (53...Ra6 54.Rdf7 Rf6 55.gf6 Kd8 56.Rg8) 54.f3 (54.Rde7 Kb8 55.Nd6 Rc8 56.Rb7 Ka8 57.Ra7 Kb8 58.Rgb7) 54...Kb8 55.Nd6 Rc5 (55...Rc4 56.Nc4 Kc8 57.Nd6 Kb8 58.Rg8) 56.e4 (56.Rg8 Rc8 57.Rc8) 56...Rc6 (56...Rc8 57.Rb7 Ka8 58.Ra7 Kb8 59.Rgb7) 57.e5 (57.Rg8 Rc8 58.Rc8) 57...Rb6 (57...Rc4 58.Nc4 Kc8 59.Nd6 Kb8 60.Rg8) 58.g6 (58.Rg8) 58...Rb4 59.Kf5 Rb6 (59...Ka8 60.Rg8 Rb8 61.Rb8 Kb8 62.g7 Ka8 63.g8Q) 60.f4 (60.Rg8) 60...Rb4 (60...Ka8 61.Rg8 Rb8 62.Rb8 Kb8 63.g7 Ka8 64.g8Q) 61.g5 (61.Rg8) 61...Rb6 (61...Ka8 62.Rg8 Rb8 63.Rb8 Kb8 64.g7 Ka8 65.g8Q) 62.Ke6 (62.Rg8) 62...Rb4 (62...Ka8 63.Rg8 Rb8 64.Rb8 Kb8 65.g7 Ka8 66.g8Q) 63.f5 (63.Rg8) 63...Rg4 (63...Ka8 64.Rg8 Rb8 65.Rb8 Kb8 66.g7 Ka8 67.g8Q) 64.Kf6 (64.Rg8) 64...Rf4 (64...Rc4 65.Rg8 Rc8 66.Rc8) 65.e6 (65.Rg8) 65...Rg4 (65...Rf5 66.Nf5 Kc8 67.Rg8) 66.e7 (66.Rg8) 66...Rg3 (66...Rc4 67.e8Q Rc8 68.Qc8) 67.e8Q 1–0. valerypavlovich – samantho, net–chess.com, 2018.

2.a3 b6

3.Bb2 f6 4.g3 (4.e4 Bb7 5.Nc3 e5+=) 4...e5= 5.Bg2 d5 6.Nf3 Bb7 7.d3 d4 8.0–0 c5 9.c3 Ne7 10.Nbd2 Nf5 11.cd4 cd4 12.Nc4 b5 13.Na5 Qc7?? (better is 13...Bd5=) 14.Nb7+– Qb7 15.Re1 Bd6?? 16.Rc1 Nc6 17.Qb3 Nfe7 18.Qe6 Rd8?? 19.Qf6 Rf8 20.Qg7 Nf5?? 21.Qh7 Qh7–+ 22.Rc6 Rc8 23.Rec1?? Rc6–+ 24.Rc6 Qd7 25.Ng5 Be7 26.Ne6 Rf6 27.Nc5 Bc5 28.Rf6 g5?? 29.Bh3 Qc7 30.Rf5?? Be7–+ 31.Bg2 Qc2 32.Bd4 ed4 33.Rb5 Qe2 34.Bc6 Kf7 35.Rb7 Qe1 36.Kg2–/+ Kf6 37.Ra7= Qe2 38.Be4 g4 39.b5 Qb2 40.Ra6 Ke5 41.b6 Bg5?? 42.b7 Be3 43.Ra5 Kf6 44.Rf5 Ke7 45.a4 Ke6 46.a5 Qa3 47.fe3 (47.fe3 Qb4 48.ed4+–; 47.b8Q Qa2 48.Qc8 Ke7 49.Qc7 Ke6 50.Re5 Kf6 51.Qe7#) 1–0. golfx – csumpi, playok.com, 2012. (=1.a3 g6 2.b4 b6)

3.Bb2 Nf6 4.h3 Bg7 5.e3 Bb7 6.f3 e6 7.g4? (7.d4 Nd5 8.Qe2 Qg5+=) 7...Qe7?? (better is 7...Ne4 8.fe4 Bb2–+) 8.g5+= Qd6?? (better is 8...Nh5 9.Bg7 Ng7+=) 9.gf6+– (9.Bf6?! Bf6 10.gf6 e5+–) 9...Qg3 10.Ke2 Bh6 11.Qe1 Ba6 12.d3 Qd6? 13.Kd2 Nc6 14.f4 e5 15.fe5 Ne5 (15...Ne5 16.Bg2 0–0–0 17.Be5 Qe5+–). heniekmichal – plakus, kurnik, 2012. (=1.a3 b6 2.b4 g6)

2.a3 f6

3.c3 e5 4.Bb2 Bg7 5.d3 Nh6 6.Nd2 Nf7 7.g3 0–0 8.Bg2 c6 9.Ngf3 d5 10.0–0 Nd7 11.Rc1 Qe8 12.Re1 e4 13.de4 de4 14.Nh4 f5 15.Nc4 Nf6 16.f3? (better is 16.Ne3+=) 16...g5–+ 17.Nf5 Bf5 18.fe4 (18.Ne3 Be6–+) 18...Be4 19.Qd2 (19.Ne3–+) 19...Bg2 20.Kg2 Qe4 21.Kh3 (21.Kg1 Qc4 22.Qd3–+) 21...h5 (21...g4 22.Kh4 Qg2 23.e4 Qh3#) 22.g4 Qg4# 0–1. golfx – bjeshka5, playok.com, 2011. (=1.a3 g6 2.b4 f6)

3.e4 Bg7 4.d4 e5 5.Bc4 (5.de5 fe5 6.Bc4 Ne7+=) 5...f5 (5...ed4 6.Nf3=) 6.h4 (better 6.Nf3!? fe4 7.Bg5=) 6...fe4 7.Bb2 (7.Bg8!? d5 8.Bd5 Qd5 9.Nc3=+) 7...d5–/+ 8.Ba2 ed4 9.Bd4 Nf6 10.Bf6? (better 10.c3!? Rf8 11.h5–/+) 10...Qf6–+ 11.c3 c6 12.Ne2 (12.Qe2 0–0–+) 12...Nd7 13.Nd4 (13.Qd4 Ne5 14.h5 Nd3 15.Kd2 Qf8–+) 13...Ne5 14.Nd2 (14.f3–+) 14...Nd3 15.Kf1 (15.Ke2 Qf2) 15...Qf2 0–1. valla – Panza, ChessWorld.net, 2016.

2.Ba3 Bg7

3.c3 d6 4.Bb2 Nf6 5.a4 0–0 6.b5 a6 7.c4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Qa4 cb5 11.cb5 Qb6 12.e3 Nbd7 13.Bd4 Nc5 14.Qb4 Bd7 15.Nc3 Qc7 16.Bc4 b6 17.Nf3 d5 18.Be2 e6 19.0–0 Nce4 20.d3 Nc3 21.Bc3 Rc8 22.Rc1 Qd8 23.Ne5 Be8 24.Bd2 Rc1 25.Bc1 Nd7 26.Nc6 Qf6 27.d4 e5 28.Bb2 e4 29.Bg4 Bf8 30.Qa4 h5 31.Bh3 g5 32.Bd7 Bd7 33.Qa8 g4 34.Ba3 Qg7 35.Qd8 Be6 36.Be7 h4 37.Bf6 Qh6 38.Ne7 Kh7 39.Nc6 g3 40.Bh4 gf2 41.Kf2 Qg6 42.Qf6 Qh5 43.Nd8 Bg7 44.Qg5 Qg5 45.Bg5 f6 46.Bf4 Bd7 47.Nf7 Bb5 48.Nd6 Bc6 49.Nc8 1–0. poganinbezdom – danielmitran, kurnik, 2012.

3.Nc3 d5 4.d4 Bf5 5.e3 Nh6 6.b5 c6 7.Bb4 (7.Rb1 Nd7=) 7...e6 (7...a6!?–/+) 8.Bd3 Bd3 9.Qd3 Qf6 (9...a6!?=+) 10.bc6 Nc6 11.Bd6 Ng4 12.Nh3 Bf8 13.Bg3 Nb4 (13...Qf5 14.Qf5 gf5 15.Nd1=) 14.Qd2 (Better is 14.Qb5!? Kd8 15.0–0+/– (< 15.Qb7 Rc8 16.Kd2 Nc6+/–)) 14...Rc8 15.0–0 h5 16.f3 h4?? (Better is 16...Ne3 17.Qe3 Bh6+/–) 17.fg4+– Qg5 18.Ng5 hg3 19.h3 Be7 20.Nf7 Rf8 21.Nh6 Rf1 22.Rf1 a5 23.a3 Nc6 24.Na4 Bg5 25.Nf7 Nd4 26.Qd4 Be7 27.Nb6 Rc7 28.Qh8 Bf8 29.Ne5 Ke7 30.Qf8# 1–0. pinecrest1981 – PT84, Live Game Caissa's Web, 2004.

3.d4 e5 4.d5 e4 5.c3 d6 6.e3 Ne7 7.h3 0–0 8.b5 Bd7 (8...Nd7 9.Qb3–/+) 9.Be2 (9.Qb3!?=+) 9...a6 10.Qb3 ab5 11.Bb5? (Better is 11.h4–+) 11...Bb5 12.Qb5 b6 13.Ne2–/+ Ra5 14.Qb3 Nd5 15.0–0 Qd7 16.Bb2 c6 17.c4= Bb2 18.Qb2 Ne7 19.Nf4 b5 20.cb5 Rb5 21.Qd4 d5 22.Nc3 Nf5 23.Qd2 Rc5 24.Na4= Rc4 25.Nb6+– Qe7 26.Nc4 dc4 27.Qc3 Nd6 28.a4 Nd7 29.a5 Ne5 30.a6 Nb5 31.Qc1 f5 32.Ne2 Qg5 33.a7 Ra8 34.Ra6 Na7?? 35.Nd4 c5? 36.Qa3 cd4= 37.Ra7 Ra7 38.Qa7 Nf3 39.Kh1 Nh4 40.g3 Nf3 41.ed4 f4?? 42.Qb8 Kg7+/– 43.Qb7 Kh6–/+ 44.Qe4 Nd2–+ 45.gf4 Qh4?? 0–1. pinecrest1981 – beta, Live Game Caissa's Web, 2004.

2.Bb2 b6??

3.c4?? Nf6 4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 b6).

3.Bh8 d6 4.Bb2 (4.Nc3 f6 5.e3 Nh6+–) 4...Bb7 5.c4 Nf6 6.Nf3 Nbd7 7.e3 Bg7 8.Be2 Bf3 (8...a5 9.b5+–) 9.Bf3 Rb8 0–1. chessxliv (2130) – nimzou (1750), net–chess.com, 2014.

3.Bh8 f6 4.Nc3 Bb7 (4...Nh6 5.Nf3+–) 5.e4 (better is 5.h4 Nh6 6.h5 g5+–) 5...e6 (5...Nh6+–) 6.a3 Ne7 (6...Nh6 7.Qf3 f5 8.Qf4+–) 7.Bf6 Bh6 (7...d5 8.Qg4 Nd7 9.Qe6 Nf6 10.Qf6+–) 8.d4 (8.Qg4 d5 9.Qh4 Bf8+–) 8...Nbc6 (8...d5 9.Nf3+–) 9.b5 Na5 10.Qf3 (10.d5 ed5 11.Nd5 Bd5 12.ed5 Nb7+–) 10...d6 11.Qh3 Bf8 12.Qe6 Qd7 13.Qd7 Kd7 14.d5 Re8 15.Be2 Bc8 16.Bg4 Kd8 17.Bc8 Kc8 18.Nf3 Ng8 19.Bd4 Bh6 20.h4 Nc4 21.Ng5 Bg5 22.hg5 Re7 23.f3 Ne5 24.Ne2 Nc4 25.Nf4 Rf7 26.Ne6 Ne7 27.c3 Kb7 28.Nd8 (28...Kb8 29.Nf7+–) 1–0. Trkn – CharlieByrdNY, ICC, 2005.

3.Bh8 f6 4.e3 Bb7 5.Nf3 e5 6.a3 Bh6 7.Bc4 d5 8.Bb3 Nd7 9.0–0 e4 10.Nd4 Qe7 11.c4 Qe5 12.Nc3 dc4 13.Bc4 0–0–0 14.Qa4 a5 15.Nc6 Qe8 16.Nd8 Qd8 17.ba5 ba5 18.Qa5 Qf8 19.Ba6 Ba6 20.Qa6 Kd8 21.Nd5 Ne7 22.Bf6 Nf6 23.Nf6 Bg7 24.Qa8 Nc8 25.Qd5 Nd6 26.Rfb1 Ke7 27.Nh7 Qh8 28.Qg5 Kf7 29.Qf4 Ke6 30.Ng5 Ke7 31.Rb7! Nb7 32.Qc7 Kf8 33.Qf7# 1–0. Trkn – Jakob Fugger, itsyourturn.com, 2000.

3.Bh8 f6 4.e3 Bb7 5.h4 +–.

3.Bh8 f6 4.e4 e5 (4...Nh6+–) 5.b5 (5.Bc4 Nh6 6.Qf3 d5 7.Bd5 c6+–) 5...Bb7 6.Bd3 (6.Nc3 a6+–) 6...Nh6 7.Qf3 Ng8 (7...f5 8.Be5 Qe7 9.Qg3 (9.Bc7?! fe4 10.Qh3 ed3 11.Kf1 dc2+–) 9...fe4 10.Be2+–) 8.Nc3 Qe7 9.Nd5 (9.Bc4!? Bg7 10.Bg7 Qg7 11.Bg8 Qg8 12.Qf6 d6+–) 9...Bd5 10.ed5 c6 (10...Qd6 11.Ne2+–) 11.bc6 d6 (11...dc6 12.dc6 e4 13.Qe4 Nc6 14.0–0–0+–) 12.Qh3 (12.Qg4 Kd8 13.Bg6 hg6 14.Qg6 Nc6+–) 12...f5 13.c4 (13.Bb5!? Qc7+–) 13...Nh6 14.f3 (14.Bf1 Kf7 15.c5 Nc6 16.dc6 Kg8 17.cb6 ab6+–) 14...Na6 (14...Kf7 15.c5 Nc6 16.dc6+–) 15.Ne2 (15.f4 Nf7 16.Qh7 Nh8 17.Qh8 Nb4+–) 15...Nc5 (15...Kf7 16.c5 Nb4 17.f4+–) 16.Bc2 0–0–0 (16...Kf7 17.d4 ed4 18.f4+–) 17.Nc3 Kb8 18.d3 (18.a4 Nf7 19.a5 Bh6 20.ab6 ab6+–) 18...Qf7 (18...Nf7 19.Nb5 Re8 20.Qh7+–) 19.0–0 (19.a4 Bg7 20.Bg7 Qg7+–) 19...f4 (19...Rc8 20.a4 Bg7 21.Bg7 Qg7 22.a5+–) 20.a4 (20.Nb5 Re8 21.d4 ed4 22.Bd4 a6 23.Bc5 ab5 24.Bb6 Nf5+–) 20...Nf5 (20...Qf5 21.Qh4 Nf7 22.Nb5+–) 21.Nb5 (better 21.a5 Nd4+–) 21...a6 (21...Rc8 22.d4 Nd4 23.Nd4 ed4 24.a5+–) 22.Nc3 (better 22.c7 Kc8 23.cd8R Kd8 24.d4+–) 22...Ne3 (22...Be7 23.a5 Rh8 24.ab6+–) 23.Rfc1 Be7 24.Be5 (better 24.d4 ed4 25.Bd4 Bf6 26.Bf6 Qf6+–) 24...de5 25.Ra2 (better 25.a5 ba5 26.Ra5 Kc7+–) 25...h5 26.a5 Bd6 (26...ba5 27.Rb1 Kc7 28.Ra5 Qf5 29.Ra6 Rc8 30.Qf5 Nf5 31.Nb5 Kd8 32.c7 Kd7 33.Rg6 Rc7 34.Nc7 Kc7 35.Rc6 Kd7+–) 27.ab6 Ka8 (27...Rc8+–) 28.Ne4 Qf5 (28...Nc2 29.Nd6 Qf8 30.c7+–) 29.Qh4 (29.Nc5!? Nc2 30.b7 Kb8 31.Na6 Ka7+–) 29...Rh8 30.Nd6 Qf8 31.Nb7! Qb8 (31...Nb7 Deflection from a6 32.Ra6) 32.Nc5 Qb6 33.Ra6 Qa6 34.Na6 Ka7 (34...Nc4 35.Rb1 Rb8 36.Rb8 Ka7 37.Qe7 Ka6 38.Qb7 Ka5 39.Qb5) 35.Qf6 (35.Qe7 Ka6 36.Ra1 Kb6 37.Qa7) 35...Ra8 (35...Re8 36.Qf7 Re7 37.Qe7 Ka6 38.Ra1 Kb6 39.Qa7) 36.Qe7 Kb6 (36...Ka6 37.Qb7 Ka5 38.Ra1) 37.Qb7 (37.Qb7 Ka5 38.Ra1) 1–0. lindsey000 – hortog, gameknot.com, 2018.

3.Bh8 f6 4.Nf3 Bb7 5.e3 Na6 6.b5 Nh6 7.ba6 Bc6 8.Bc4 Nf7 9.Bf7 Kf7 10.d4 Kg8 11.Bf6 ef6 12.0–0 f5 13.c4 Qc8 14.d5 Bb7 15.ab7 Qb7 16.Nc3 Re8 17.Nd4 a5 18.a4 Bb4 19.Ndb5 c6 20.dc6 Qc6 21.Qd5 Re6 22.Rfd1 Bc3 23.Nc3 h5 24.Qc6 Rc6 25.Nb5 Rc4 26.Rd7 1–0. Trkn – Con brio, itsyourturn.com, 2000.

2.Bb2 c6??

3.Bh8 d5 4.Bb2 Bg4 5.h3 Bf5 6.d3 Nh6 7.Nf3 e6 8.Nbd2 Qb6 9.a3 Bd6 10.c4 dc4 11.Nc4 Qc7 12.e4 Be4 13.Nd6 Qd6 14.de4 Qd1 15.Rd1 Nd7 16.Bc4 Nb6 17.Bb3 Nd7 18.0–0 Nb6 19.Ng5 f5 20.Ne6 fe4 21.Nc7 (21...Ke7 22.Rfe1+–) 1–0. coloplayah (2170) – doddy (1675), net–chess.com, 2006.

3.Bh8 f6 4.Nf3 d5 5.e3 Bg4 6.Be2 Bf3 7.Bf3 Nh6 8.d4 Nf7 9.Bf6 ef6 10.Qe2 Bb4 11.c3 Ba5 12.0–0 Qb6 13.c4 Nd7? 14.Nd2 Bd2 15.Qd2 0–0–0? 16.cd5 Kb8 17.dc6 Nd6 18.cd7 Rd7 19.Rab1 Qd8 20.Rfc1 b6 21.a4 f5 22.a5 Ne4 23.Be4 fe4 24.Qb4 h5 25.ab6 Rb7 26.ba7 Ka7 27.Qb7 1–0. coloplayah (2140) – doddy (1675), net–chess.com, 2006.

2.Bb2 d5??

3.Bh8+– Na6 4.a3 f6 5.e3 (better is 5.e4 Nh6 6.ed5 Nb8+–) 5...Kf7 (5...Nh6 6.Ba6 ba6+–) 6.c4 (6.c4 Nh6 7.Qf3+–) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

3.Bh8+– Qd6 4.a3 f6 5.Nf3 e5 6.e3 Bg4 7.Be2 e4 8.Nd4 Qd7 9.Bg4 1–0. KHW – EvilGenius, ChessWorld.net, 2002.

3.Bh8+– f6 4.e4 Nh6 5.Qf3 +–.

2.Bb2 e5

(--> 1.b4 e5 2.Bb2 g6).

3.b5 d6 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 g6 4.b5).

3.Be5 Nf6 (--> 1.b4 e5 2.Bb2 Nf6 3.Be5 g6).

2.Bb2 Bh6??

3.Bh8 b5 4.Bb2 (4.e3 a5+–) 4...d6 (4...a5 5.ba5 Nc6 6.a4+–) 5.e3 Nf6 (5...c6 6.Qf3+–) 6.Bb5 c6 7.Ba4 d5 8.c4! Kf8 9.cd5 cd5 10.Nf3 Ne4 11.Nc3 Ba6 12.d3 e6 13.de4 Be3 14.fe3 Nc6 15.Bc6 Qb6 16.b5 Qe3 17.Qe2 d4 18.Qe3 de3 19.Ba8 Bb5 20.Nb5 f5 21.Rc1 f4 22.Rc7 a6 23.Ke2 ab5 24.Rd1 Ke8 25.Bc6 Kf8 26.Rd8 1–0. dragonpower (2045) – twandio, net–chess.com, 2002.

3.Bh8 f6 4.e3 d5 5.c4 dc4 (5...d4 6.ed4 e6 7.Ne2+–) 6.Bc4 Kf8 7.Qb3 Bf5 (7...e6+–) 8.Bg8 Nc6 (8...Qe8 9.Bc4 Bg7 10.Bg7 Kg7+–) 9.Qf7 1–0. GuestVYKR – GuestVKTS, freechess.org, 2017.

3.Bh8 Nf6 4.e3+–.

2.Bb2 Nh6??

3.Bh8 Nf5 4.e3 (4.e4 Nd6 5.e5 Nf5+–) 4...Na6 (4...f6 5.Qf3 Nh6 6.Nc3+–) 5.a3 f6 6.e4 (6.Nc3 Kf7 7.Qf3 c6+–) 6...Nd4 (6...Nd6 7.Nc3 Nf7 8.Bf6 ef6 9.Nf3+–) 7.c3 (7.Nf3 Ne6 8.d4 Kf7+–) 7...Nc6 (7...Ne6 8.d4 Bh6 9.Nf3+–) 8.d4 (better 8.b5 Ne5 9.ba6+–) 8...e5 (8...Kf7 9.Qb3 d5 10.ed5+–) 9.Qd2 (better 9.b5 Be7 10.bc6 dc6+–) 9...ed4 10.cd4 Nab4 11.ab4 Bb4 12.Nc3 a5 (12...Qe7 13.Nf3 Qf8 14.d5+–) 13.Qd3 (13.Nf3!? Qe7 14.e5 fe5 15.de5 Ne5 16.Ne5 d6+–) 13...f5 (13...Kf7+–) 14.0–0–0 Qg5 (14...Bc3 15.Qc3 fe4 16.d5+–) 15.Kb1 f4 (15...Bc3 16.Qc3 fe4 17.d5+–) 16.Nd5 Kd8 (16...Rb8+–) 17.Bf6 Qf6 18.Nf6 a4 19.Qc4 a3 20.Ka2 (20.Qg8 Ke7 21.Nd5 Kd6 22.Qf8 Ke6 23.Nf4) 20...Be7 21.Qg8 Bf8 22.Qf8 1–0. garabrut – mic1971, gameknot.com, 2019.

3.Bh8 f6 4.e4 (4.Nc3 Nf7+–) 4...Nf7 5.Bf6! ef6 6.b5 Nh6 (6...a6 7.Nc3+–) 7.Bc4 (7.Nc3 a6+–) 7...Bg7 (7...a6 8.ba6 Na6 9.Nf3+–) 8.Ne2 (8.Nc3 a6+–) 8...f5 (8...a6 9.Nbc3+–) 9.Nbc3 b6 (9...fe4 10.Bd5+– (10.Ne4?! d5=)) 10.0–0 Bb7 11.ef5 gf5 (11...Nf5 12.Nf4 Kf8 13.Re1+–) 12.Ng3 (better 12.Nf4 Kf8 13.Qh5+–) 12...Ng4 (12...Kf8 13.Re1 f4+–) 13.h3 Ne5 (13...Nf6 14.Re1 Kf8 15.Nf5+–) 14.Qh5 Nf7 (14...Kf8 15.Bb3 d5 16.Nf5 Nbd7+–) 15.Qf7 1–0. GuestLVKD – GuestJDBS, freechess.org, 2020.

2.b5 a6

3.Bb2 Nf6=.

3.Nc3 Bg7 4.d4 ab5 5.Nb5 c6 6.Nc3 Qa5 7.Qd2 Bh6 (7...b5 8.e3+=) 8.Qd3 (8.e3 Nf6=) 8...b6 (8...Bc1!? 9.Rc1 b5+=) 9.Bh6= Nh6 10.Nf3 Na6 11.Nd2?? (11.e4 d5 12.Qd2 Nb4 13.ed5 Nd5=) 11...d5 (11...Nb4!? 12.Qe4 f5 13.Nc4 fe4 14.Na5 Nc2 15.Kd2 Na1 16.Nc4–+) 12.Qe3?? (better is 12.Nb3 Qa3 13.e4 de4 14.Qd2=) 12...Nf5–+ 13.Qe5 Qc3 14.Rb1?? Qc2 15.Qh8+– Kd7 16.Qh7 Nb4–+ 17.Qf7?? Nd4 18.g3+= Ra2 19.Qg6?? Qg6 20.Rb4 Nc2 21.Kd1–+ Nb4 22.e3 Ra1 23.Ke2 Qd3 24.Kf3 Bb7 25.Bd3 Rh1 26.Bf5 Kd8 27.h4 c5 28.e4 Ra1 29.ed5 Bd5 30.Kf4 Ra2 31.Ke3 c4 32.Kd4 Rd2 33.Kc3 Rf2 34.Kb4 Rf5 35.g4 Rf4 36.h5 Rg4 (36...Rg4 37.Kc3 Rg3 38.Kd4 c3 39.Kd5 c2 40.h6 c1Q 41.h7 Qc5 42.Ke4 Re3 43.Kf4 Qe5 44.Kg4 Rg3 45.Kh4 Qg5#; 36...Rf3 37.Kb5 Rb3 38.Ka6 Kc7 39.g5 Bb7 40.Ka7 Ra3#) 0–1. Man,Master (1775) – Reineke,Joerg (1830), remoteschach.de, 2006.

3.c4 ab5 4.cb5 c6 (4...Bg7 5.d4=+) 5.e3 (5.e4 Bg7 6.d4 c5=) 5...cb5 (5...Bg7 6.d4=) 6.Bb5 (6.Bb2 f6+=) 6...Nc6 (6...Bg7 7.Nc3=) 7.Bc6 (7.Bb2 e5+=) 7...bc6 (7...dc6 8.Bb2 Nf6 9.Bf6 ef6 10.Nf3=+) 8.Bb2= Bb7?? (better 8...Nf6=) 9.Bh8+– Nf6 (9...Nh6 10.Be5+–) 10.Bf6 ef6 11.Nc3 Qe7 12.Qb3 (better 12.Nge2 Bg7+–) 12...0–0–0 (12...Ba6 13.Nge2+–) 13.Nf3 Qb4 (13...d5 14.Rb1+–) 14.Qb4 (better 14.Qf7 Qe7 15.Qb3 Qa3+–) 14...Bb4 15.Nd4 (15.a3 Bc3 16.dc3 c5+–) 15...Bc5 (15...c5 16.Nf3+–) 16.0–0 (16.Nc2 Be7+–) 16...Bd4 17.ed4 Ba6 18.Rfb1 (18.Rfe1 Kc7+–) 18...Bd3 19.Rb3 Bc4 20.Rb4 Bb5 (20...Bd3+–) 21.Nb5 cb5 (21...Kb7 22.Nc3 Kc7 23.d5+–) 22.Rb5 (better 22.Rc1 Kb7 23.Rb5 Ka6 24.Rcb1 Rf8 25.R5b3 Re8 26.Ra3) 22...Kc7 23.Rc1 Kd6 24.f4 (24.Rb6 Ke7+–) 24...Ke6 (24...Ra8 25.Rb6 Ke7 26.Re1 Kf8 27.Rf6 Ra2 28.f5+–) 25.g4 (25.Re1 Kd6+–) 25...f5 (25...Ra8 26.f5 Kd6 27.Rb6 Ke7 28.Re1 Kf8 29.Rb7 Ra2 30.Rd7 gf5 31.Ree7 fg4 32.Rf7 Kg8 33.Rg7 Kh8 34.Rh7 Kg8 35.Rhg7 Kh8 36.Rg4+–) 26.g5 (26.gf5 gf5 27.Re1 Kf6+–) 26...Kd6 (26...Ra8 27.Rc2+–) 27.h4 (27.a4 Ra8 28.a5 Ke7+–) 27...Ke7 (27...Ra8 28.Rb6 Kd5 29.Rc7+–) 28.a4 Kf8 (28...Ra8 29.a5+–) 29.a5 Re8 (29...Ra8 30.Ra1 Ke8 31.a6+–) 30.a6 Re2 (30...Ra8 31.Ra1 h6+–) 31.a7 Rd2 32.a8Q Ke7 (32...Kg7 33.Rb8 Rd1 34.Rd1 h6 35.Rg8 Kh7 36.Rh8 Kg7 37.Qf8) 33.Re5 Kd6 34.Qa6 (34.Qd5) 1–0. afsharian – Ur1cchio, lichess.org, 2018.

2.b5 Nf6

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

3.d4 Bg7 4.Bb2 0–0 5.c4 e6 (5...a6 6.ba6 Na6 7.e3=+) 6.a4 d5 7.e3 Qe7 (7...Ne4 8.Nd2=) 8.c5 (8.Ba3!? Qd8 9.Bf8 Bf8 10.Nf3+–) 8...Nbd7 (8...a6 9.Nf3=) 9.Ba3 (better 9.c6!? bc6 10.bc6+=) 9...c6= 10.Qb3 (better 10.Nf3=) 10...cb5?? (better 10...e5 11.Ne2 ed4 12.ed4 Re8–/+) 11.ab5 (11.c6 Qd8 12.cd7 Nd7 13.Bf8 ba4 14.Ra4 Bf8+–) 11...a5? (better 11...Ne4 12.c6 Ndc5+–) 12.ba6! ba6?! (12...Qd8 13.ab7 Bb7 14.Qb7 Qa5 15.Nd2 Rfb8+=) 13.Bd3 (13.c6 Qd8 14.cd7 Bd7 15.Bf8 Bf8+–) 13...a5?? (13...Nb8 14.c6 Qc7 15.Bf8 Bf8 16.Nf3+=) 14.Ne2 (better 14.c6 Qd8 15.cd7 Bd7 16.Bf8 Bf8 17.Nf3+–) 14...a4 (better 14...Nb8!?+=) 15.Qc2+– Ba6? (better 15...Qd8 16.c6 Nb6 17.Bf8 Bf8+–) 16.Ba6 (16.c6 Bd3 17.Qd3 Qd8 18.cd7 Qd7 19.Bf8 Bf8+–) 16...Ra6 17.Nbc3?? (better 17.c6 Qd8 18.cd7 Qa5 19.Nbc3+–) 17...Bh6?? (better 17...Rc6+–) 18.c6+– (18.Na4?! Rfa8 19.Nec3 Ne4=) 18...Rc6 (18...Qd8 19.cd7 Nd7 20.Bf8 Bf8 21.Ra4 Ra4 22.Qa4 Nb6+–) 19.Nd5 (better 19.Be7 Rfc8 20.Qd3+–) 19...Rc2?? (better 19...Qa3! 20.Qa4 Qa4 21.Nf6 Nf6 22.Ra4 Rc2–+) 20.Ne7= (20.Be7? Nd5 (20...ed5?! 21.Bf8 Bf8 22.Ra4–/+) 21.Bf8 Bf8–+ (21...Nf8?! 22.Kd1 Rb2 23.Re1–+)) 20...Kg7 21.Rc1 (better 21.Ng6 Kg6 22.Bf8 Bf8 23.Ra4=) 21...Re2?? (better 21...Ra2 22.Bb4 Ra8–/+) 22.Ke2+– e5 (22...Rb8 23.Rc4 Nb6 24.Rb4+–) 23.Nf5! gf5 24.Bf8 Kf8 25.Rc8 Kg7 26.de5 Ne5 27.f4 Nfg4?? (better 27...Ned7+–) 28.fe5+– Ne3 29.Rhc1 (better 29.Ra1+–) 29...Ng2 (29...Bg5 30.h4! Bh6 31.Ra1+–) 30.R1c7 (30.Rg1 Bg5 31.Rg2 Kh6+–) 30...Kg6?? (30...Nf4 31.Kf3 a3+–) 31.Rg8 Kh5 32.h4 (better 32.Rg2 Bg5 33.h4+–) 32...Nf4 33.Kf3 (better 33.Kd1 a3 34.Rf7+–) 33...Nd5?? (33...Ng6 34.Re8 Nh4 35.Kf2 Ng6+–) 34.Rf7 Nc3 (34...Kh4 35.e6 a3 36.Rf5 Nf6 37.Rg1 Bf4 38.Rh1 Bh2 39.Rh2) 35.Rh7 (35.Rh7 Ne4 36.e6 Nf6 37.e7 a3 38.e8Q Ne8 39.Rg5 Kh4 40.Rf5 Nf6 41.Rh6 Nh5 42.Rfh5; 35.Rf5 Kh4 36.Rg4 Kh3 37.Rh5) 1–0. afsharian – surfing_mantis, lichess.org, 2018.

3.d4 Bg7 4.Bb2 d5 5.c3 0–0 6.Qc2 (6.e3 a6=+) 6...c6 7.e3 cb5 8.Bb5 a6 (8...Bf5 9.Bd3 Bd3 10.Qd3=+) 9.Bd3 Nc6 10.a4 (better 10.Ne2=+) 10...b5 (better 10...e5–/+) 11.ab5+= ab5?? (better 11...Na5+=) 12.Ra8+– Qc7 (12...Qb6 13.Ra1+–) 13.Bb5 Bb7 (13...Na7 14.Qa4 Nb5 15.Qb5+–) 14.Rf8 Kf8 15.Bc6 (15.Nf3!? Ne4+–) 15...Bc6 16.Ne2 Bb5 17.0–0 (17.Na3 Ba6+–) 17...Qc4 (17...Ng4 18.g3+–) 18.Re1 Ne4 (18...Ba4 19.Qc1+–) 19.Nf4 (19.Na3 Qc6+–) 19...e6 (19...Ba4 20.Qc1+–) 20.Na3 Qa4 21.Nb5 (better 21.Qa4 Ba4 22.c4+–) 21...Qc2–+ 22.Nd6?? (better 22.Ba3 Kg8 23.Ne2–+) 22...Nd6 (22...Qf2 23.Kh1 Qe1) 23.Ba3–+ Qc3 (better 23...Ke7 24.Bd6 Kd6–+) 24.Bd6 Ke8 25.g3?? (better 25.Rb1–+) 25...Qe1 26.Kg2 Kd7 27.Kf3 (27.Bc5 g5 28.Nh3 h6–+) 27...g5 (27...Kd6 28.Kg2–+) 28.Nh5 (28.Be5 Be5 29.de5 gf4 30.gf4 Qh1 31.Kg3 Qg1 32.Kf3 Qh2–+) 28...Bd4 (better 28...Qd1 29.Kg2 Qh5–+) 29.ed4 (29.Bf8 Ke8 30.g4 Qd1 31.Kg2 Be3–+) 29...Kd6 (29...Qe4) 30.Ng7 Qe4 0–1. afsharian – eskandar1470 (1695), lichess.org, 2018.

2.c3 Nf6

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).

2.d4 Nf6

3.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.d4).

3.Nf3 d6 (--> 1.b4 Nf6 2.Nf3 d6 3.d4 g6).

2.e3 Bg7

3.c3 Nf6 4.b5 0–0 5.a4 a6 6.Na3 c6 7.Nf3 ab5 8.ab5 cb5 9.Bb5 Nc6 10.Bb2 Ra5 11.Bd3 Ng4 12.h3 Nge5 13.Ne5 Ne5 14.Nc4?? (better is 14.Be2=) 14...Nd3 15.Ke2 Nb2 16.Nb2 Ra1 17.Qa1 d6 18.Nc4 Bd7 19.d4 (19.Qa5 Qe8 20.Rb1 Bc6–+) 19...Bc6 (19...Bb5 20.Ke1 Bc4 21.h4–+) 20.f3 b5 21.Na5 Qb6 22.e4 Bd7 23.Rb1 Ra8 24.c4 Ra5 25.c5 dc5 26.dc5 Ra1 27.cb6 Rb1 28.b7 Be5 29.Ke3 b4 30.f4 Rb3 31.Kf2 Bf4 32.g3 Be5 33.g4 h5 34.Kg2 hg4 35.hg4 Bg4 (35...Bg4 36.Kg1 Bf3 37.Kf2 Bd4 38.Ke1 Rd3 39.b8R Kg7 40.Rg8 Kg8 41.e5 Rd1#) 0–1. fmanea – mietz, kurnik, 2012.

3.d4 a5 4.b5 c6 5.a4 cb5 6.ab5 Nf6 7.c4 Ne4 8.Bd3 Ng5 9.Nf3 Nf3 10.Qf3 (worse is 10.gf3 d6=) 10...0–0 11.h4 e5 12.Bb2 f5? (better is 12...ed4!? 13.Bd4 Bd4 14.ed4 Re8 15.Kf1 h5+=) 13.de5 d6 14.Qd5 Kh8 15.f4 (15.h5!? gh5 16.Ra4+–) 15...de5+/– 16.Be5 Qd5 17.Bg7 Kg7 18.cd5 Nd7 19.Nc3 Nc5 20.Bc2 b6 21.0–0 Bb7 22.Rfd1 Rad8 23.d6 Rd7 24.Na4+/– Na4 25.Ra4 Rf6 26.Rad4 h6 27.Bb3 Be4 28.Kf2 Rf8 29.Rc1 Rfd8 30.Rc7 Kf6? 31.g3?? Rd6?? 32.Rf7# 1–0. papa25 – andrzejek054, kurnik, 2012.

3.d4 b6 4.c4 c5 5.bc5 bc5 6.Nf3 Nc6 7.Bb2 Qa5 8.Qd2 Qd2 9.Nbd2 cd4 10.Bd4 Nd4 11.ed4 Bb7 12.Rb1 Bf3 13.Nf3 Nh6 14.Rb7 (14.Bd3 e6+/–) 14...d6 (14...Nf5!?=) 15.c5 Nf5 16.Bb5 Kf8 17.c6 Bd4 18.c7 Kg7 19.Bd7 Bb6 20.0–0 e6 21.Rc1 Ne7 22.Nd2 Nc8? 23.Rb8+– Ne7 24.Ra8?? Ra8+/– 25.c8R Nc8 26.Rc8 Rc8 27.Bc8 e5 28.a4 f5 29.Kf1 f4 30.Ke2 h5 31.Ne4 d5 32.Nc3 d4 33.Nd5 Bc5 34.Kd3 g5 35.f3 h4 36.h3 a5 37.Ke4 Bd6 38.Nb6 Kf6? 39.Nc4 Bc7 40.Bd7 Bb8? 41.Na5 Bc7 42.Nc4 Ke7 43.Bb5 Ke6 44.a5 Bb8 45.a6 Ba7 46.Na5 Bb6 47.Nc6 1–0. papa25 – totilocura, kurnik, 2012.

2.g3 Bg7

3.c3 b5 4.e3 (4.Bg2 d5=) 4...Bb7 (4...a5 5.d4=+) 5.f3 (5.Nf3 a5=) 5...e5 (5...a5 6.d4=) 6.Bd3 (6.Bb5 Ne7=) 6...a6 7.e4 (7.a4 ba4 8.Be2 Bc6=+) 7...Nf6 8.Qb3 (8.Be2!?=+) 8...0–0 (8...d5 9.ed5 Bd5 10.c4 bc4 11.Bc4–/+) 9.Nh3 (9.c4 bc4 10.Bc4 d5 11.ed5 Nd5–+) 9...c6 (9...d5 10.Nf2–/+) 10.Na3 (10.0–0 d5–/+) 10...d6 (10...d5 11.ed5 c5 12.c4 bc4 13.Bc4 cb4 14.Nc2 Nd5 15.d3–+) 11.Ng5 (11.Be2 Bc8 12.Nf2 Be6–/+) 11...c5 (11...d5 12.0–0–+) 12.0–0 (12.bc5 Nfd7 13.Nf7 Rf7–+) 12...c4 (12...h6 13.Nh3 c4 14.Nc4 bc4 15.Bc4–+) 13.Nc4 bc4 14.Bc4 Qd7 (14...Qc7–+) 15.b5? (15.Ne6 Re8 16.Ng7 Kg7–/+) 15...h6 16.Nh3?? ab5 17.Bb5 Bc6 18.a4 (18...Bb5 19.Qb5 Qb5 20.ab5 Ra1 21.d3–+; 18.Bc6 Nc6 19.Nf2–+). Merlina – AbuJamal, mySchach.de, 2004.

3.Nc3 Nc6 4.a3 d5 5.Rb1 (5.Bg2 Nf6=+) 5...Bf5 (5...Nf6 6.d4=+) 6.e3 d4 7.ed4 Nd4 8.d3 Qd7 9.Bg2 0–0–0 10.Be4 (better 10.Be3!?=+) 10...Be4 11.de4 (11.Ne4 Qc6 12.c3 Nb5–+) 11...Nc2! 12.Qc2 Bc3 13.Kf1 Qd1 (13...Bg7 14.Kg2–/+) 14.Qd1 Rd1 15.Kg2 Nf6 (15...Re1 16.Nf3 Rh1 17.Kh1=+) 16.Ne2=+ Rh1 17.Kh1 Ne4 18.Kg2? (18.f3 Nd2 19.Nc3 Nb1 20.Nb1–+) 18...Rd8 19.b5 (19.Nc3 Nc3 20.Rb3 Nb5–+) 19...Rd1 20.Kf3 (20.Rb3 Bf6–+) 20...Nd6 (20...f5!? 21.Rb3–+) 21.Nc3 Rd3 22.Be3 Rc3 23.a4 Nf5 (23...Nc4 24.Ra1–+) 24.a5 (better 24.g4 Ne3 25.fe3–+) 24...Ne3 25.fe3 Kd7 (25...Ra3 26.Rb4–+) 26.a6 (26.Rd1 Ke8 27.Rb1 Ra3–+) 26...b6 (26...ba6 27.Rd1 Kc8 28.ba6–+) 27.Ke4 (27.Rd1 Ke8–+) 27...Ke6 (27...c5 28.h3–+) 28.Rb4 (28.Kd4 Rc2–+) 28...c5 29.h4?? (29.bc6 f5 30.Kf3 Rc6 31.g4–+) 29...cb4 30.g4 b3 31.Kd4 White threatens to counter with b2 31...Rc5 32.e4 (32.Ke4 b2 33.Kd4 b1Q 34.e4 Qb3 35.g5 Qc3) 32...b2 33.h5 (33.Kd3 b1Q 34.Ke3 Rc3 35.Ke2 Qb2 36.Ke1 Rc1) 33...b1Q 34.hg6 (34.Ke3 Rc3 35.Ke2 Qb2 36.Ke1 Rc1) 34...Qd1 (34...Qb3 35.gf7 Qc3) 35.Ke3 Rc3 36.Kf4 (36.Kf2 Qd2 37.Kf1 Rc1) 36...Qf3 (36...Qd2) 37.Kg5 Qf6 38.Kh6 Rh3 (38...Qg6) 0–1. samantho – vitorcosta, net–chess.com, 2018.

2.g4 Bg7

3.c3 c6 4.h3 a5 5.ba5 Qa5 6.Bg2 Nf6 7.Qb3 0–0 8.d4 d5 9.Bd2 Be6 (9...b5 10.c4 bc4 11.Ba5 cb3 12.ab3+=) 10.Nf3 c5 11.e3 cd4 12.ed4 b5 13.Ne5 Qa4 (13...Ne4!?+=) 14.Qa4+= Ra4 15.g5 (15.Bf1!?+/–) 15...Nfd7 16.f4 Ne5 17.fe5 Nc6 18.0–0 Rfa8 19.a3 Na5 20.Bc1 Nc4 21.Ra2 Bf5 22.Nd2 Bd3 23.Bd5+= Bf1 24.Kf1?? Nd2 25.Bd2 Ra3 26.Ra3 Ra3 27.Ke2 e6 28.Bc6 b4 29.cb4 Rh3 30.b5 Rh2 31.Kd3 Rh3 32.Kc4 Rh4 33.b6 Be5+= 34.Bc3 Bb8 35.Kc5 Rg4 36.Bd2 Kg7 37.Bc3? Rg5–+ 38.d5 Kg8 39.b7 ed5 40.Bd5 h5 41.Bf6 Rf5 42.Be7 Rf1 43.Bd6 Rc1 44.Bc4 Rc4! 45.Kc4 Bd6 46.Kd5 Bb8 47.Ke4 f5 (47...f5 48.Kd5 h4–+) 0–1. dtpwaldi – ziber09 (1655), kurnik, 2011.

3.c3 Nf6 4.Nf3=+.

3.Nc3 e5 4.Bg2 Nc6 5.b5 Nd4 6.a4 c6 7.e3 Ne6 8.Nf3 d6 9.Ba3 Ne7 10.Ne4 0–0 (better is 10...c5!?=) 11.Nd6+/– e4 12.Nd4 Nd4 13.ed4 Bd4 14.Rb1 cb5 15.ab5 Qa5 16.Bb4 Qb6 17.0–0 Bc5 (17...Nd5 18.Nc4 Qb5 19.Bf8 Qc4 20.Ba3=) 18.Ne4 (18.Nc8?! Rfc8 19.Be4 Bb4 20.Rb4 a5+=) 18...Bb4 19.Rb4 Nd5 20.Rb1 Nf4 21.c4 Ng2 22.Kg2 Qe6 23.f3 f5 24.Ng5 Qd7 25.d4 fg4 26.f4 h6 27.Ne4 Qf5 28.Nd6 Qh5 29.Nc8 Qh3 30.Kh1 Rac8 31.Rb3 Qh5 32.Rg3 Rc4 33.Qg4 Qg4 34.Rg4 1–0. elsh1403 (1610) – klaudiusz501, kurnik, 2011.

3.d4 b6 4.e3 (4.e4 Bb7 5.Bg2 c5=) 4...c5 (4...Bb7 5.Nf3+=) 5.bc5 bc5 6.c3 cd4 7.cd4 Nf6 8.Nf3 (8.Bg2 d5 9.h3 h5+=) 8...Bb7 (8...Ng4 9.Nc3+=) 9.Be2 (9.h3 0–0=) 9...0–0 (9...Ng4 10.Nc3–/+) 10.0–0 (10.Rg1 Na6+=) 10...Ng4–/+ 11.Nbd2 Qc7 12.Ba3 Nc6 13.Rc1 Qb8 14.d5= Nce5 15.e4?? Nf3–/+ 16.Nf3 Ne5 17.Ng5 h6–/+ 18.Nh3 d6 19.f4 Nd7 20.f5 Ne5 21.fg6 fg6 22.Rf8 Qf8 23.Qb3 Bc8 24.Nf2 Bd7 25.Qg3 Kh7 26.Rf1 h5 27.Bc1 Bf6 28.Nd3 Nd3 29.Bd3 Qg7 30.Bg5 Rf8 31.h4 Bd4 32.Kg2 Rf1 33.Kf1 Bf6 34.Ke2? Bg4–+ 35.Ke3 Bd4 36.Kd2 Qe5?? 37.Bf4?? Qf6 38.e5? de5–+ 39.Bg5 Qf3 40.Qf3–/+ Bf3 41.Be7 Bd5 42.a4 e4 43.Be2 Bb6 44.Bb4 e3 45.Kd3 Bb7 46.a5–/+ Ba6 47.Ke4 Be2 48.ab6 ab6 49.Ke3 Bg4 50.Kf4 Bf5 51.Kg5 b5 52.Kf6–/+ Kg8 53.Ke7? Kg7 54.Bc3–/+ Kg8 55.Be5?? Bd3 56.Bf6 b4 57.Be5? b3 58.Bd4?? Bc2 59.Bc3?? Kh7 60.Kf6 Bf5 61.Bb2 Kg8 62.Kg5 Kf7 63.Kf4 Ke6 64.Kg5 Kd5 65.Kf4 Kc4 66.Ke3 Bc2 67.Bf6 Kb4 68.Kd2? Ka3 0–1. dtpwaldi – makarena2, kurnik, 2012.

3.d4 d5 4.e3 +=.

2.a3 d6

3.Bb2 e5 4.e3 Bg7 5.Nf3 (--> 1.b4 e5 2.a3 g6 3.Bb2 Bg7 4.Nf3 d6 5.e3).

3.Bb2 Nf6 4.Bf6 ef6 5.e3=.

3.e3 Bg7 4.Nc3 Nf6 5.Nge2 0–0 6.Bb2 Re8 7.h3 e5 8.g3 Nc6 9.Bg2 d5 10.d3 d4 11.ed4 ed4 12.Nb5 (12.Ne4!? a6 13.Nf6 Bf6 14.0–0+=) 12...a6 13.Nbd4?? (better is 13.Bc6 bc6 14.Nbd4–/+) 13...Nd4 14.Bd4 Qd4 15.0–0 Qb6 16.Kh2 (16.c3 Bd7–+) 16...c6 (16...Ng4 17.hg4 Ba1 18.Nf4–+) 17.c4 (17.d4 Bh6–+) 17...Ng4! 18.hg4 Bg4 (better is 18...Ba1 19.c5 Qd8–+) 19.f3 Ba1 20.Qa1 (20.fg4 Bg7–+) 20...Re2 21.fg4 Qe3 22.Rf3 (22.Qf6 Rf8 23.b5 cb5 24.cb5 ab5 25.d4–+) 22...Qf3 23.Qf1 Qg4 24.Qf3 Qf3 0–1. nimzou (1750) – fermen (2665), net–chess.com, 2014.

3.Bb2 f6

4.d3 d5 5.Nd2=.

4.d3 Be6 5.Nd2 Bg7 6.g3 c6 7.Bg2 Bf7 8.Ngf3 e5 9.0–0 Nd7 10.c4 Ne7 11.Rb1 0–0 12.e3 Re8 13.e4 Nf8 14.d4 Qc7 15.de5 de5 16.c5 Rad8 17.Qc2 Rd7 18.Nc4 Nc8 19.Rbd1 Red8 20.Rd7 Rd7 21.Rd1?? (better is 21.Bh3 Ne6 22.Rb1=) 21...Rd1–+ 22.Qd1 Bc4 23.Nh4 Bf7 24.Qd3 Ne6 25.Bf1 h6 26.Kg2 Kh7 27.Nf3 Ne7 28.Nd2 f5 29.Nc4 Nd4 30.Bd4 ed4 31.Nd6 Ng8 32.ef5 Bd5 33.f3 Qe7 34.fg6–/+ Kh8 35.Nf5 Qf6–+ 36.Be2 Qg6 37.g4? h5 38.h3 Nf6 39.Nd6 Qd3 40.Bd3 hg4 41.hg4 Ng4 42.Kg3 Ne3 43.Nb7 Be5 44.Kf2 Nd1 45.Kg2 Nc3 46.Na5 Nb5 47.a4 Nc3 48.Bc2 d3! 49.Bd3 Na4 50.Be4 Be4 51.fe4= Nc3? 52.Nc6+– Bf4 53.Na7 Ne4 54.c6 (54.c6 Nc3 55.Kf3+=) 1–0. golfx – golemxiv, playok.com, 2011. (=1.a3 d6 2.b4 g6)

4.e3 Bg7 5.Nf3 e5 6.Be2 Bg4 7.d3 Ne7 8.Nbd2 0–0 9.h3 Bf3 (9...Be6 10.d4=) 10.Nf3 c6 11.0–0 Kh8 (11...d5 12.c4+=) 12.c4 d5 13.cd5 Nd5 14.Qb3 Nd7 15.e4 (15.Rfc1 f5+=) 15...Nf4= 16.Rfe1 Ne2 (16...c5 17.Bc1+=) 17.Re2+= Nb6 (17...a5 18.d4+=) 18.Rd1 Qe7 19.d4 ed4 20.Bd4 Rad8 (20...Rfd8 21.Re3+/–) 21.Qe3 (21.Red2 Rfe8+/–) 21...Nc4 22.Qc3 Ne5 23.Red2 Nf3 24.Qf3 b6 25.Bc3 Rd2 26.Rd2 Rd8 27.Rd8 Qd8 28.Qe3 Qd1+= 29.Kh2 Qd7 30.e5 fe5= 31.Be5 Kg8 32.Bg7 Kg7= 33.Qe5 Kf7 34.f4 Qe6 35.Qe6?? Ke6–/+ 36.g4? Kd5–+ 37.Kg2 Ke4 38.f5 gf5 39.gf5 Kf5 40.Kf3 Ke5 41.Ke3 Kd5 42.Kd3 c5 43.bc5 Kc5 44.Kc3 Kb5 45.Kb3 Kc5 46.Kc3 b5 47.h4 a5 48.h5 b4 49.ab4 ab4 50.Kb3 Kd5?? 51.Kb4= Ke5 52.Kc4 Kf5 53.Kd4 Kg5 54.Ke4 Kh5 55.Kf4 Kh4 56.Kf3 Kh3 57.Kf2 1–0. Fournier,Frederic (1985) – Giulian (1860), Echecs21 (2/0), 2003.

2.a3 Bg7

3.Ra2 a6 4.c4 b6 (4...d5 5.cd5 Qd5 6.Bb2=) 5.d4 Bb7 6.d5 Nf6 7.Bb2 d6 8.Nf3 h6 (8...0–0 9.Nc3=) 9.e3 (9.e4 0–0 10.Bd3 c6+=) 9...0–0= 10.Bd3 Re8 11.0–0 g5 (11...e6 12.de6 Re6 13.Nd4=) 12.h3 (12.e4 c6+=) 12...c6+= 13.dc6 Bc6 (13...Nc6 14.Nc3+=) 14.a4 (14.Nd4 Qc7+–) 14...e5 15.Bf5 e4 16.Nd4 Bb7 17.Qb3 Qc7 18.a5 Nh7 (18...ba5!? 19.Ra5 Re5+=) 19.Rc1 Nd7 (better 19...Nf6+–) 20.g4?? (better 20.Bd7 Qd7 21.ab6+–) 20...Ne5= 21.Bh7 Kh7 22.Rf1?? (22.Nf5 ba5 23.c5 dc5 24.Ng7 Kg7 25.Rc5 Qd6+=) 22...Nd3 (22...ba5 23.Nf5 Nf3 24.Kg2–+) 23.f4? (better 23.ab6!? Qb6 24.Nf5 Bb2 25.Rb2=) 23...gf4 (23...ba5 24.Ra5 gf4–+) 24.Ba3? (24.Nf5!? Bb2 25.ab6 Qb6 26.Rb2–+) 24...fe3 (better 24...ba5 25.ba5 Rab8–+ (25...fe3?! 26.Nf5–+)) 25.Re2?? (25.Nf5 d5 (25...ba5?! 26.ba5 e2 27.Re2–/+) 26.Ng7 Kg7 27.cd5 Red8–+ (worse 27...ba5 28.d6 Qd7 29.ba5–/+)) 25...Rad8 (better 25...Bd4 26.ab6 Qd7 27.Bc1–+) 26.c5 (better 26.ab6 Qb6 27.Rf7 Qd4 28.Rb7–+) 26...Rf8?? (better 26...dc5 27.Nf5 c4 28.ab6 cb3 29.bc7 Rd7 30.Ng7 Kg7 31.Re3 Rc7–+) 27.ab6=+ Qe7 28.Re3?? (28.Nf5 Qg5 A) 29.Re3? dc5 30.Bc1 Bd5 (worse 30...Nb4 31.Nc3–/+) 31.Rd3 Bb3 (31...ed3 32.Bg5 Bb3 33.Bd8 Rd8 34.Ng7+=) 32.Rb3 Qg6 33.bc5 h5–+; B) 29.Bc1 dc5 30.Be3+=) 28...Bd4–+ 29.Kh2 (29.Bc1 Qg5 30.Rf7 Kh8–+) 29...Qe5 (better 29...Be3 30.Rf5 Bc8–+) 30.Rg3 Nf4 (30...f5 31.Nd2–+) 31.Bc1 (31.Qc4 Bd5 32.Qc2–+) 31...Ne2 32.Bf4 (32.Re1 Ng3 33.Qg3 Qg3 34.Kg3 dc5 35.bc5–+) 32...Nf4 33.Qd1 (33.Qc4 dc5 34.bc5 Bc5–+) 33...e3 34.Qc2 (34.Qc1 e2 35.Re1 Bf2 36.Qc2 f5–+) 34...Be4 35.Qb3 Rd7 (35...Ne2 36.Rfg1 Qf4 37.Qc2 Ng3 38.Qe4 Ne4 39.Kh1 Be5 40.Kg2 Qg3 41.Kh1 Qh3) 36.Na3 dc5 (better 36...Ne2 37.Rff3 Bf3 38.Qd3 f5 39.Qe2 Be2 40.g5–+) 37.b5 (37.Nc4 e2 38.Re1 Qe6 39.bc5 Bf2–+) 37...Bd5 (37...Ne2 38.Rff3 Bf3 39.Qd3 f5 40.Qe2 Be2 41.Kg2 fg4 42.hg4 Rf2 43.Kh3 Bf1 44.Rg2 Bg2 45.Kh4 Qh2) 38.Nc4 (38.Qb1 f5 39.ba6 e2–+) 38...e2 39.Re1 Bf2 (better 39...Bc4 40.Qc4 Bf2–+) 40.Ne5 Bb3 (40...Be1 41.Qb1 Be4 42.Qe4 f5 43.Qf4 Bg3 44.Qg3+–) 41.Nd7 Rd8 (41...Bg3?! 42.Kg3 Rd8 43.Kf4 Rd7 44.ba6 Rd4 45.Ke3=+) 42.Nf6 Kg6 (better 42...Kh8 43.Rb3 Be1–+) 43.Rgg1 (43.Nh5 Be1 44.Nf4 Kh7 45.Ne2 Bg3 46.Ng3 ab5 47.Ne4–+) 43...Be1 (43...Rd3 44.Rg3 Rg3 45.ba6 Rh3) 44.Ne4 (44.Re1 Kf6 45.ba6 Rd1 46.Re2 Ne2–+) 44...Ba5 (better 44...Bb4 45.b7 ab5–+) 45.Nc5 Bb6 46.ba6 (46.Rc1 Rd1 47.Nd3 Rd3 48.Rc3 Rc3 49.ba6 Rh3) 46...Bc5 47.Rb1 (47.Rd1 ed1Q 48.Kg3 Qd3 49.Kf4 Qe3) 47...Bc4 (47...Rd3 48.Rb3 Rb3 49.a7 Rh3) 48.Rc1 (48.a7 Rd3 49.Rb6 Bb6 50.a8Q Rh3) 48...Rd4 (48...Rd3 49.Rc3 e1Q 50.Rd3 Qg1) 49.h4 (49.Rb1 Rd3 50.Rb6 Bb6 51.a7 Rh3) 49...Ba7 (49...Rd3 50.h5 Kg5 51.Rc3 Rc3 52.a7 Rh3) 50.h5 Kg5 51.Kg3 (51.Rb1 Rd3 52.Rb5 Bb5 53.Kh1 Rh3) 51...Ba6 (51...Rd3 52.Kh2 Rh3) 52.Rc8 (52.Rc5 Bc5 53.Kh2 Rd3 54.Kh1 Rh3) 52...e1Q 53.Kf3 Bb7 (53...Rd3) 54.Rc6 Bc6 0–1. Paul593 – Delboy Smith (1615), ChessWorld.net, 2020.

3.Ra2 e6 4.Bb2 Nf6 5.e3 0–0 6.c4 d5 7.Nc3 (7.d4 c6=) 7...dc4 (7...e5 8.cd5 Nd5 9.Bc4=+) 8.Bc4= c5 (8...a5!?=) 9.bc5+– Nc6 (9...e5+–) 10.Nce2 (10.d4 e5 11.d5 Na5+–) 10...Bd7 (10...Qa5!?=) 11.Bf6 Qf6 12.d4 Na5 13.Bd3 Nc6 (13...Bc6!? 14.Nf3 b6 15.cb6 Bf3 16.gf3 Qf3+=) 14.Nf3+– e5 (14...b6+–) 15.de5 (better 15.d5!? Nd8 16.Nc3+–) 15...Ne5+= 16.Ne5 (16.Ned4 Rac8 17.Ne5 Qe5=) 16...Qe5= 17.0–0 Be6 18.Rd2 Qc5 19.Qb1 (19.Qa4 Rfd8=) 19...b6=+ 20.Rc1 (20.Qc1 Rac8=+) 20...Qa3 21.Nf4 (better 21.Nd4=+) 21...Bd7 (21...Rfc8 22.Rdc2 Rc2 23.Rc2–/+) 22.Be2 (better 22.Bg6 hg6 23.Rd7=) 22...Bf5–/+ 23.Bd3 Bd3 24.Rd3 (24.Nd3 Rac8–/+) 24...Qe7 (24...Qb2 25.Nd5–/+) 25.Qa2 (25.Rcd1 Qh4=+) 25...Rfd8 26.Rb3 (26.Nd5!? Qe6 27.Rcd1=+) 26...Rd6–/+ 27.Ne2 (27.Rd3 Rd3 28.Nd3 Rd8–/+) 27...Re6 (27...Rad8!? 28.Ng3 Be5–+) 28.Nf4=+ Rd6 29.h3 (29.Ne2 Rad8 30.Ng3–/+) 29...Be5 30.Nd3 Bg7 31.Nf4 Be5 32.Ne2?? (32.Nd3 Rad8 33.Qa6 Qe6–/+) 32...Bg7?? (32...Rad8 33.Nc3–+) 33.Ng3 (33.Nf4 Rad8 34.Qa6–/+) 33...Qd7 34.Kh2 Rd2 35.Qa3 (better 35.Rc2 Rc2 36.Qc2–/+) 35...Rd1?? (better 35...Rf2 36.Ne4 Be5 37.Kg1 Rc2–+) 36.Rd1=+ Qd1 37.Rb2? (37.Rb6 Bf8 38.Qa6 ab6 39.Qa8 b5=+) 37...Qd7?? (37...Bb2 38.Qb2 Qd6 39.Kg1–+) 38.Ne4?? (better 38.Rb6! a5 39.Rd6=+) 38...Be5 (38...Qe6 39.Rb4 Bf8 40.Qb2 Bb4 41.Qb4–+) 39.Ng3 (39.f4 Bb2 40.Qb2 Qc6–/+) 39...Bb2 40.Qb2 Qc7 41.Qe2 Rc8 42.Qf3 (42.Qb5 Rd8–+) 42...Qc5 (42...b5 43.Kg1–+) 43.h4 (43.Qf6 Qc6 44.Qd4 Qc3–+) 43...Qc6 (43...a5 44.Qf6–+) 44.Ne4 (44.Qg4–+) 44...Qd6 (better 44...f5 45.Ng5 Qf3 46.Nf3 a5–+) 45.Nd6+– Rd8 (45...Rf8 46.h5 h6+–) 46.Qf7 (46.Qf7 Kh8 47.Qf6 Kg8 48.Qd8 Kg7 49.Qe7 Kh6 50.g4 a5 51.Qf8) 1–0. alddhsfd (1990) – B60824136LUIS (2020), lichess.org, 2021.

3.Ra2 Nf6 4.f3 0–0 5.Bb2 d5 6.g3 Nc6 7.b5 Na5 8.e3 c6 9.Bf6 Bf6 10.f4 cb5 11.Bb5 a6 12.Ba4 Nc4 13.c3 b5 14.Bc2 e5 15.fe5 Ne5 16.d4 Nc4 17.Qd3 Bf5 18.e4 Be4 19.Qe2 Bh1 20.Kd1 Re8 21.Qf2 Ra7 22.Bd3 Bg5 23.Bc4 dc4 24.h4 Bh6 25.Nd2 Bd2 26.Rd2 Rae7 27.Nh3 Qa8 28.Nf4 Qf3 29.Qf3 Bf3 30.Kc2 h6 31.Nd5 Bd5 32.g4 Re2 White resigned 0–1. themuttsknutts (1635) – bluesman16 (1825), ChessWorld.net, 2011. (=1.a3 g6 2.b4 Bg7 3.Ra2 Nf6)

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

3.Nc3 b6 4.Bb2 Bb7 5.e3 e6 6.Nf3 Ne7 7.d4 0–0 8.Bd3 a5 9.0–0 ab4 10.ab4 Ra1 11.Ba1 d6 12.Ne2 (12.Qe2 c5+=) 12...c5 (12...Bf3 13.gf3 Nd5 14.Qd2=) 13.bc5= bc5 (13...dc5 14.Nd2=) 14.Qd2 (14.dc5 dc5 15.Bg7 Kg7+=) 14...cd4 (14...Bf3 15.gf3 Nd7 16.dc5 Nc5 17.Bg7 Kg7 18.Rb1=+) 15.Ned4 e5 16.Ne2 (better 16.Rb1 Ba8 17.Ne2=) 16...e4?? (better 16...Bf3 17.gf3 Qc8=) 17.Bg7+– ef3 (better 17...Kg7 18.Be4! Be4 19.Qd4 Kg8 20.Qe4 Nbc6+–) 18.Bf8 fe2 (18...Qf8 19.Rb1 Ba8 20.gf3 Bf3+–) 19.Qe2 (better 19.Rb1+–) 19...Qf8= 20.f3 (better 20.Rb1 Qc8 21.Qd2=) 20...Nf5 (better 20...Nd7!?=) 21.Bf5 gf5 22.Qf2 Kh8 (22...Qe7 23.Rd1+=) 23.Qg3 (23.Qh4 Nd7+–) 23...Nd7 (23...Qe7 24.Qf4 Nd7 25.Rd1+–) 24.Rd1+– Attacks the isolani on d6 24...Ne5 25.Rd6?? (better 25.Qh4 Kg8 26.Qg5 Ng6 27.Qf5+–) 25…Qd6–+ (25...Qd6 26.Qf4 Qd1 27.Kf2 Qc2 28.Kg3 Qc3–+) 0–1. alddhsfd (1630) – coyotlmelaque (1635), lichess.org, 2019.

3.Nc3 d6 4.Bb2 Nf6 5.e3 0–0 6.Na4 (6.Nf3 e5=) 6...Bd7 7.c4 Nh5 (7...e5!?=+) 8.Bg7= Ng7 9.Nc3 a6 (9...e5 10.Nf3=) 10.Nf3+= c6 (10...Nc6 11.d4+=) 11.Be2 b5 12.0–0 bc4 13.Bc4 d5 (13...a5 14.Qe2+=) 14.Be2+– f6 15.d4 e5 (15...Bg4!?+–) 16.de5+– fe5 17.Ne5 Be6 18.Nc6?? (better 18.Qd2+–) 18...Nc6=+ 19.e4 (19.Bf3!?=+) 19...de4–/+ 20.Ne4 Qd1 (better 20...Qh4!? 21.Nc5 a5 22.Ne6 Ne6–/+) 21.Rfd1 Rad8 (21...Rf4 22.Nc5 a5 23.g3=) 22.Nc5 (22.Ba6 Nd4 23.Bd3 Bd5+=) 22...Rd1 (better 22...a5!?=+) 23.Rd1+= Nf5?? (better 23...a5 24.Rd6 Nd8+=) 24.Ne6+– Re8 25.Nf4 (25.Bc4 Kh8+–) 25...g5 (25...Re4 26.g3+–) 26.Bc4 Kg7 27.Ne6 Kg6 (27...Kh6 28.h3+–) 28.Nc5 (28.g4!? Re6 29.Be6 Nfe7+–) 28...Ncd4 (28...a5 29.b5 Ne5 30.Bb3+–) 29.g3 (29.Ba6!? g4+–) 29...Nf3 (29...a5 30.g4 Nf3 31.Kg2+–) 30.Kg2 Ne5 (30...Ne1 31.Kh1+–) 31.Ba6 h5 (31...g4 32.h3+–) 32.Bd3 (32.Re1 Nd6 33.f4 gf4 34.gf4 Ng4 35.Re8 Ne8 36.Bd3 Kf6+–) 32...Kf6 (32...Nd3 33.Rd3 g4 34.a4+–) 33.Bf5 (33.Ne4!? Ke7 34.Ng5 Nd3 35.Rd3 Rc8+–) 33...Kf5 34.Rd5 Kf6 35.Rd6 (35.Ne4 Ke6 36.Rd6 Ke7+–) 35...Kf7 36.b5 (36.h4 g4+–) 36...Nc4 (36...g4+–) 37.b6 (better 37.Rd7 Re7 38.Rd5+–) 37...Nd6–+ 38.b7? (38.a4 Rc8 39.Nb3 Nb7–+) 38...Nb7 (better 38...Rb8–+) 39.Nb7–/+ Ra8 40.Nc5 (40.Nd6 Kg6–/+) 40...Ra3–+ 41.Ne4 Ra2?? (better 41...g4–+) 42.Ng5+= Kg6 43.Ne4 Ra3 44.f3 (44.h3 Ra4 45.Nc3 Rd4+=) 44...Ra2 45.Kh3 Ra1?? (45...Kf5 46.Nd6 Ke5 47.Nf7 Kf6 48.Nd8=) 46.Nd6?? (better 46.g4+–) 46...Ra2 (46...Rd1 47.Nc4=) 47.Ne4 Ra3 (better 47...Ra1=) 48.Nd6?? (48.f4 Ra4 49.Nc5 Ra2=) 48...Kh6?? (48...Rf3 49.Kg2 Rd3 50.Ne4–/+) 49.Nb5?? (better 49.f4+=) 49...Kg5?? (better 49...Rf3 50.Nd4 Rd3–/+) 50.Na3 h4 51.Nc4 (51.f4!? Kf5 52.Kh4 Kg6+–) 51...hg3 52.hg3 Kf5 53.g4 Kg6 54.f4 Kg7 55.Kh4 Kg8 56.Kh5 Kf8 57.Kh6 Kg8 58.g5 Kh8 59.g6 (59.f5 Kg8 60.Nd6 Kf8 61.f6 Kg8 62.g6 Kf8 63.g7 Kg8 64.f7) 59...Kg8+– 60.g7 (60.f5 Kf8 61.Ne3 Ke8 62.g7 Kd7 63.g8Q Kc6 64.Qd5 Kb6 65.Qc4 Kb7 66.Nd5 Ka8 67.Qa6 Kb8 68.Qb6 Kc8 69.Qc7) 60...Kf7 61.Kh7 (61.Kh7 Ke7 62.g8Q Kd7 63.Qd5 Kc7 64.Qc5 Kd7 65.Nb6 Ke8 66.Kg7 Kd8 67.Qd6 Ke8 68.Qd7) 1–0. alddhsfd (1910) – ValeraShokot (1890), lichess.org, 2019.

3.Nc3 e6 4.Bb2 d5 5.e4 Ne7 (5...de4 6.Qc1=+) 6.ed5 (6.d4 Nd7=) 6...ed5 7.d4 (7.Nf3 0–0=) 7...Bf5 (7...Nbc6 8.Nb1=+) 8.Nf3= Nd7 (8...a5 9.b5=+) 9.Bd3 Bd3 10.Qd3 0–0 (10...Nb6 11.0–0=) 11.0–0–0 (11.0–0 Re8=) 11...b6 (11...Re8 12.h4=+) 12.Rhe1= a5 (12...Re8 13.Re2=+) 13.b5 c5 (better 13...Rc8=) 14.Ne5 (14.dc5 Nc5 15.Qe2 Ra7=) 14...c4 (14...cd4 15.Qd4 Ne5 (worse 15...Be5 16.Re5 Ne5 17.Qe5+–) 16.Re5 A) worse 16...Be5 17.Qe5 f6 18.Qe6 Rf7 19.Ne4+– (19.Nd5?! Nd5 20.Rd5 Qc7=); B) 16...Nf5 17.Qd5 Qg5 18.Kb1 Rad8–/+ (worse 18...Be5 19.Ne4 Qe7 20.Qe5 Qe5 21.Be5+–)) 15.Qf3+= Nf6 16.g4 h6 (16...Ra7 17.a4 Qd6 18.Na2=) 17.h4 g5 (better 17...Qd6!?+=) 18.hg5+– hg5 19.Rh1 Nd7? (better 19...Qd6+–) 20.Qd3?? (better 20.Nd5 Nd5 21.Nc6+– (21.Qd5?! Ne5 22.de5 Qd5 23.Rd5 Rfd8+–)) 20...cd3–+ 21.Nd3 Qc7 22.Rh5 (22.Rde1 Nf6–+) 22...Bd4 (better 22...Rfc8 23.Rg5 Kf8 24.Rg7 Kg7 25.Kb1–+) 23.Rdh1 (23.Nd5 Bb2 (23...Nd5?? 24.Rg5 Bg7 25.Rg7 Kh8 26.Rh1 Qh2 27.Rh2) 24.Nb2 Qd6 25.Rg5 Ng6–+) 23...Ng6 (better 23...Bc3 24.Rh8 Kg7 25.R8h7 Kf6 26.f4 Bb2 27.Kb2–+) 24.Nd5 Bb2 25.Kb2 Qd6 (better 25...Qd8 26.Ne3–+) 26.c4 (26.Rg5 Nde5! 27.Ne5 Qd5 28.Rh8 Kg7–+) 26...Nc5 (better 26...Nde5 27.Ne5 Qe5 28.Kb3 a4 29.Ka2 Qe2 30.Ka1 Qc4 31.Rd1–+) 27.Nc1 (27.R1h3 Nd3 28.Rd3 Qe5 29.Rc3 Nf4 30.Nb6 Rab8–+) 27...Qe5 28.Kc2 Qe4 29.Kb2 Qd4 (29...Na4 30.Kb3 Qb1 31.Ka4 Qc2 32.Nb3 Qc4 33.Nb4 ab4 34.Na5 Ra5) 30.Kb1–+ Qc4 31.Rh8 Nh8 32.Ne7 Kg7 33.Nf5 Kf6 34.Rh6 Ke5 (better 34...Ng6 35.Rg6 fg6 36.Nd6 Qg4 37.Kc2–+) 35.Rh3 Na4 (better 35...Qg4 36.Re3 Kf5 37.Re2–+) 36.Re3 Kd5 (better 36...Kf6!? 37.Nd6 Qd4 38.Rf3 Kg6 39.Rb3 Qd6 40.f4–+) 37.Rb3 Qe4 (better 37...Nc3 38.Ka1 Ke6 39.Ng3–+) 38.Rd3 Kc5 (better 38...Ke5 39.f3 Qc4 40.Re3 Kf6 41.Nd6–+) 39.Ne3 Kb5 40.Nc2 Ka6 (40...Rac8 41.Nd4 Ka6 42.Nde2–+) 41.Rd4 Qc6 42.Nb3 Qb5 (42...Qc3 43.Nc5 bc5 44.Rd6 Kb5 45.Kc1 Rfd8 46.Kd1 Rd6 47.Nd4 Rd4 48.Ke2 Qd3 49.Ke1 Re8) 43.Ka2 Nc3 (43...Rac8 44.Rd2 Rfd8 45.Ncd4 Rd4 46.f3 Rd2 47.Ka1 Qe5 48.Nd4 Rc1) 44.Kb2 Na4 (44...Rac8 45.a4 Na4 46.Ra4 Qa4 47.f4 Rc2 48.Kc2 Re8 49.Kb2 Re2 50.Kc3 Qb4 51.Kd3 Qe4 52.Kc3 Rc2) 45.Ra4?? (45.Ka2 Rac8 46.Rd2–+) 45...Qa4–+ 46.Ncd4 Qb5! 47.Nb5 Kb5 48.Nd4 Kc4 49.Nf5 f6 (better 49...Rfd8 50.Ne3 Kb5 51.Kb3–+) 50.Ne3 Kd4 (50...Kc5 51.Nf5–+) 51.Nf5 Ke4 52.f4 Kf3 (better 52...Kf4 53.Nd4–+) 53.fg5 Kf4 (53...fg5 54.Nh6–+) 54.g6 Kg4 (better 54...Ng6 55.Kb3–+) 55.g7 Kf5 56.g8Q (56.g8Q Rg8 57.Kb3 a4 58.Kc3 Rg3 59.Kb2 Re8 60.Kc2 Re2 61.Kd1 Rh2 62.Ke1 Rg1). TwelveTeen (2535) – helmsknight (1955), Time forfeit, 2018. (=1.a3 g6 2.b4 Bg7 3.Nc3 e6)

3.Nc3 Nf6 4.Nf3 d5 5.Bb2 0–0 6.e3 c6 7.Be2 Qd6 8.0–0 Nbd7 9.Na4 b6 10.d4 Qc7 11.Bd3 Ne8 (11...Bb7 12.Qe2+=) 12.Nc3 e5 13.Ne5 Ne5 14.de5 Be5 15.h3 Bb7 16.Qc1 Qe7 17.Ne2 Nd6 18.Be5 Qe5 19.Rd1 a5 20.Qd2 ab4 21.Qb4 b5 22.a4 ba4 23.c3 (23.Rdb1 Rfc8 24.Qc3 Qe7+=) 23...Kg7 24.Ra4 c5 25.Qa3 Nc4 26.Bc4 dc4 27.Ra8 Ra8 28.Qb2 Be4 29.Nf4 Rb8 30.Qd2 Rb3 Exerts pressure on the isolated pawn 31.f3 Bd3 32.Rc1 h6 33.e4 Ra3 ½–½. Pischner,Rainer (2350) – Lehmann,Stefan (2350), RSS7E high–94, 2010. (=1.a3 g6 2.b4 Bg7)

3.d4 Nc6 4.Nf3 d5 5.e3 Bg4 (5...a6 6.b5 Nb8 7.c4=) 6.h3 Bf3 7.Qf3 Nf6 (7...e5 8.Bb2=) 8.b5 Nb8 (8...Na5 9.Nd2+=) 9.c4 0–0 10.Nc3 c6 11.bc6 bc6 12.Bd2 Nbd7 (12...e6 13.Rc1+=) 13.cd5+/– cd5 14.Nd5 e6 (14...e5 15.Bb4 Nd5 16.Qd5+/–) 15.Nf6 Nf6 16.Bb4 Re8 (16...Rb8!?+–) 17.Bb5 a5 18.Bc5 Nd5? (18...Nd7 19.0–0 Nc5 20.dc5 Ba1 21.Be8 Qe8 22.Ra1 Rc8+=) 19.Be8 Qe8 20.0–0 a4 21.Rab1 Nf6 (21...f5 22.Rfc1+–) 22.Rb7 Rc8 23.Re7 Qd8 (23...Qb5 24.Rc1+–) 24.Ra7 Qe8 (24...h6 25.Ra4 Nd7 26.Ra7+–) 25.Rb1 Bf8 (25...Bh8+–) 26.Qf6 Bc5 (26...Bg7 27.Qf3 Bf8 28.Rbb7 Rc5 29.dc5+–) 27.dc5 Rc5 (27...Qf8 28.Rbb7 Qg7 29.Qg7 Kg7 30.Rf7 Kg8 31.Rg7 Kh8 32.Rh7 Kg8 33.Rhg7 Kh8 34.Rg6 Rc5 35.Re6 Rc8+–) 28.Rf7! Qf7 (28...Rc1 29.Rc1 Qf7 30.Rc8 Qe8 31.Re8) 29.Rb8 (29...Rc8 30.Rc8 Qe8 31.Re8) 1–0. Trkn – guest2599, ICC, 2004.

3.d4 e6 4.e4+= Ne7 5.Nf3 0–0 6.Bd3 d6 7.c3 b6 8.0–0 Bb7 9.Qe2 Nd7 10.Re1 c5 11.Nbd2 cd4 12.cd4 Nc6 13.Nb3 Re8 14.b5 Ne7 15.Bg5 f6 16.Bf4 e5 17.de5 de5 18.Be3 Kh8 19.Red1 f5? 20.Ng5+– Rf8 21.Ne6 Qe8 22.Nf8 Qf8 23.f3 Rc8 24.Rac1 f4 25.Bc4 fe3 26.Rd7 Ba8 27.Ra7 Bh6 28.Rd1 Bg5 29.Rad7 Re8 30.Be6 h5 31.a4 h4 32.Nc1 Ng8 33.Bf7 Rc8 34.Bg6 Nf6 35.Ra7 Qh6 36.Bf5 h3 37.Bc8 hg2 38.Ra8 (38.Ra8 Qh4 39.Bf5 Kg7 40.Ra7 Kf8 41.Nd3+–; 38.Rd8 Ng8 39.Rg8 Kg8 40.Qc4 Kh8 41.Qf7 Bc6 42.Be6 Qh2 43.Kh2 g1Q 44.Kg1 Be4 45.Qf8#) 1–0. marekt (1970) – Sersalva (1950), ICC, 2003.

3.Ra2 d6

4.Bb2 e5 5.e3 Ne7 6.c4 0–0 7.d3 f5 8.Nc3 Be6 9.e4 (9.Be2 f4=) 9...a6 10.Be2 c6 (10...c5 11.Nf3=+) 11.Nf3= Nd7 (11...d5 12.ed5 cd5 13.Ng5=) 12.0–0 fe4 (12...h6 13.Re1=) 13.Ne4 (13.Ng5 Bf7 14.de4 Nf6+=) 13...d5 (13...Nf5 14.Neg5 Bf7 15.Re1=) 14.Ned2 (better 14.Nfg5 Bf5 15.Nd6=) 14...e4?? (better 14...Nf5=+) 15.de4+– de4 16.Bg7 (16.Ne4 Bb2 17.Rb2 Nf5+–) 16...Kg7? (better 16...ef3 17.Bf8 fe2 18.Qe2 Nf8=) 17.Ne4+– Nf5 18.c5?? (better 18.Neg5 Qf6 19.Rd2+–) 18...Ba2=+ 19.Qa1 Nf6 20.Nf6 Qf6 21.Qa2 Rae8 22.Bc4 Nd4 23.Nd4 Qd4 24.Qc2 Re5 25.Rd1 Qh4 (25...Rf2 26.Qg6 (26.Rd4? Rc2 27.h4 Re3–+) 26...hg6 27.Rd4–/+) 26.Rd7= Kh6 (26...Re7 27.Qc3 Kh6 28.g3=) 27.Rb7 (27.g3!? Re1 28.Kg2 Qe4 29.Qe4 Re4 30.Bd3+–) 27...Re1 28.Bf1 Qf4?? (better 28...Rd8 29.g3 Qg4–+) 29.g3 (better 29.Rd7+=) 29...Qf3?? (29...Qd4 30.h4 Rd1–+) 30.Rd7 (better 30.Qd2 Re3 31.Qe3 Qe3 32.fe3+–) 30...Re6 (better 30...Rf1 31.Kf1 Qh1 32.Ke2 Rf2 33.Kf2 Qh2 34.Kf3 Qc2–+) 31.Rd3?? (better 31.Qd2 g5 32.h4+–) 31...Ref6?? (better 31...Qf6+–) 32.Rf3+– Rf3 33.Bg2 Rf2 (33...R3f6 34.Qd2 Kg7 35.Bc6 Rf2 36.Qf2 Rf2 37.Kf2+–) 34.Qf2 Rf2 35.Kf2 g5 (35...Kg5+–) 36.Bc6 g4 37.Bb5! ab5 38.c6 Kg5 39.c7 h5 40.c8Q h4 41.Qc5 Kg6 42.Qb5 hg3 43.hg3 (43.hg3 Kg7 44.Qd7 Kh6 45.b5 Kg5 46.b6 Kh6 47.b7 Kg5 48.Qc6 Kf5 49.b8Q Kg5 50.Qe5) 1–0. alddhsfd (2010) – D_mohamad_2004s (1935), lichess.org, 2021.

4.Bb2 Be6?? 5.Bg7+– Ba2 6.Bh8 f6 (6...Bb1 7.Qb1 Nd7 8.e3+–) 7.Nc3 Bc4 (7...Be6 8.d4+–) 8.d3 Bf7 9.e4 Kf8 (9...Nd7 10.Nf3+–) 10.Qg4 (10.Nf3 c5+–) 10...Nh6 (10...h5 11.Qf3 Nc6+–) 11.Bg7 (better 11.Qh4 Kg8 12.Bf6 ef6 13.Qh6+–) 11...Kg7= 12.Qf3 (12.Qg3 c5=+) 12...Ng8 (12...c5 13.Qe3=+) 13.g4 (13.d4 c5 14.d5 cb4 15.ab4 a5=) 13...Kh8 (13...Nd7 14.d4=) 14.h4 (14.d4 Nd7=) 14...e5 (14...Nc6 15.Nge2=) 15.Nh3 White intends g5 (better 15.Nge2=) 15...Bb3?? (15...Be6 16.g5=) 16.g5 (better 16.cb3 c5 17.h5+–) 16...Bc2= 17.h5 fg5? (17...Kg7=) 18.Rg1?? (better 18.hg6 Qf6 19.Ng5 Qg6 20.Rh7 Qh7 21.Nh7+–) 18...Qf6=+ 19.Qf6 (19.Qg4 Nc6 20.Nd5 gh5 21.Qh5 Qh6 22.Rg5 Qh5 23.Rh5 Nd4=) 19...Nf6 20.Ng5 gh5?? (better 20...Nh5 21.Nd5 Na6–/+) 21.Nf7 1–0. Kharshaki – Agesan, lichess.org, 2020. (=1.a3 g6 2.b4 Bg7 3.Ra2 d6)

4.Bb2 Nf6 5.e3 Be6 6.c4 0–0 7.Nf3 b5 8.Qc2 a5 9.Ra1 ab4 (9...bc4 10.Bc4 Bf5 11.Bd3 Bd3 12.Qd3 ab4 13.ab4 Ra1 14.Ba1=) 10.ab4 (10.cb5 b3 11.Qc1 Qd7=) 10...Ra1 11.Ba1 bc4 12.Bc4 Qd7 (12...Bc4 13.Bf6 Bf6 14.Qc4=+) 13.Be6 Qe6 14.Bf6 (14.Qc7?? Rc8 15.Qc8 Qc8–+) 14...Bf6 15.d4 (15.Qc7? Rc8 16.Qc8 Qc8–+) 15...Nd7 16.Nc3 (16.Qc7 Rb8=) 16...c5 17.bc5 dc5 18.0–0 cd4 19.Nd4 Bd4 20.ed4 Rc8 21.Qd3 White intends d5 (21.Qd2 Nf6=) 21...Nb6 (21...Qc4 22.Qc4 Rc4 23.Ne2=+) 22.d5 (22.Rb1 Nd5 23.Nd5 Qd5=) 22...Qf6 (better 22...Qe5 23.Qb5 Rc3 (23...Qc3?! 24.Qb6 Qe5 25.Qe3 Qd5 26.Qe7=) 24.Qb6 Qd5 25.Qb8 Kg7–/+) 23.Rd1?? (better 23.Ne4 Qf5 24.d6 ed6 25.Qd4=) 23...Rc3–+ 24.Qa6 Nd5! 25.Qa8 (25.Rd5 Qe6 Double attack (25...Qa6 Discovered attack; 25...Qe6 Decoy)) 25...Kg7 26.Qd5 e6 (26...Rc2 27.Rf1–/+) 27.Qd2 Rb3 28.h3 Rb2 29.Qe3 h5 (29...Ra2 30.Rd7–/+) 30.Rf1 (better 30.Rc1–/+) 30...Qf5 (better 30...Ra2!?–/+) 31.Qc3 Qf6 32.Qf6 (32.Qe3 Ra2 33.Re1–/+) 32...Kf6–+ 33.Rd1 Kf5 34.f3 f6 35.Kh2 e5 (35...h4 36.Rd4 g5 37.Rd7–+) 36.Kg3 (36.h4 Rb4 37.Kg3 Rb3–/+) 36...g5 37.Re1 (37.Rd6 h4 38.Kh2 Ra2–+) 37...h4 38.Kh2 Kg6 (38...Rb4 39.Rc1–+) 39.Rc1 f5 (39...Rd2 40.Rc6–+) 40.Rc7 (40.Rc6 Kf7–/+) 40...Kf6 (40...e4!? 41.Rc6 Kf7 42.fe4 fe4 43.Kg1–+) 41.Rc6–/+ Kf7 42.Rc1 (42.Rc7!? Kg8 43.Kg1–/+) 42...f4 43.Ra1 Kf6 44.Ra4 Kf5 45.Re4 Re2?? (better 45...Rc2–+) 46.Re2+– e4 (46...Kf6 47.Ra2+–) 47.Ra2 (better 47.fe4 Ke5 48.Rc2+–) 47...e3 48.Ra5 Ke6 49.Ra2 (49.Rg5? e2 50.Rg8 Ke7 51.Rg7 Kd6 52.Rg6 Kd7 53.Rg7 Ke8 54.Rg8 Kf7–+) 49...e2?? (49...Kf5 50.Kg1 Kf6+–) 50.Re2+– Kf5 51.Kg1 1–0. alddhsfd (2065) – BenoneG (2140), lichess.org, 2021.

3.Bb2?? Bb2–+

4.Ra2 Ba3 5.Na3 (5.Ra3 d5 Combination; 5.Na3 d6 Combination) 5...e6 (5...Nf6 6.e3+=) 6.Ra1 (6.Nf3 Nf6+=) 6...Ne7 7.e3 0–0 8.Nf3 c6 9.c3 d6 10.Be2 Nd7 11.0–0 Qc7 12.d4 b6 13.Qc1 Bb7 14.c4 Rac8 15.c5= dc5 16.bc5 bc5 17.dc5 Rfd8 18.Rd1 Nd5 19.Bc4 f5 20.Bd5 cd5–/+ Attacking the isolated pawn on c5 21.Nc2 Nc5 22.Ncd4 Qd6 23.Qc2 Ba6–+ 24.Rdc1? Bc4 25.Nd2 Rb8?? 26.Nc4= dc4 27.Qc4 Rbc8 28.Rd1 1–0. Fournier,Frederic (1955) – kaibrut (1735), Active Blind, 2007.

4.Ra2 Bf6 5.e3 Nc6 (5...e5 6.Nf3–+) 6.Nf3 d6 7.d4 Bd7 8.Rb2 e6 (8...e5 9.Be2–+) 9.c4 Nge7 10.Nc3 Bg7 11.Bd3 e5 12.de5 (12.b5 Na5–+) 12...Ne5 13.Be2 (13.Ne5 Be5 14.Qd2–+) 13...Nf3 14.Bf3 Bc6 (better is 14...Bc3 15.Rd2 Bc6–+) 15.Rc2 Bf3 16.Qf3 Qd7 17.0–0 0–0–0 18.Qd1 Rde8 19.g3 Bc3 20.Rc3 Rhf8 21.Qc2 Kb8 22.Rd1 Qd8 23.c5 dc5?? 24.Rd8+/– Rd8 25.bc5 Rfe8 26.Qb2 f5+/– 27.Kg2 h6 28.a4 g5 29.a5 f4 30.ef4 gf4 31.a6 b6 32.cb6 ab6 33.a7 Ka7?? 34.Ra3 Kb8 35.Qa2 Nc8 36.Ra7?? Na7–+ 37.Qe2 Re2 0–1. Fournier,Frederic (1985) – hseldon (1700), Active, 2007.

4.Ra2 Bg7 5.e3 Nf6 6.Nf3 e6 (6...a5 7.b5–+) 7.Be2 0–0 8.d4 d5 9.c4 dc4 10.Bc4 Nbd7 11.Nbd2 Nb6 12.Bd3 Nbd5 13.0–0 (13.Qc2–+) 13...Nb4 14.ab4 a5 15.ba5 c6 16.Ra1 Nd5 17.Qc2 b6 18.ab6+/– Ra1 19.Ra1 Nb6 20.Rb1 Nd5 21.g3 c5 22.dc5 Qc7+/– 23.e4 Nf6 24.c6 Nh5 25.Nc4 e5? 26.Ne3 f5? 27.Nd5 Kh8?? 28.Nc7 fe4 29.Be4 Bg4 30.Kg2 Bf3 31.Bf3 Nf6 32.Nd5 e4 33.Nf6 ef3 34.Kf3 Rf6 35.Kg2 Rf8 36.c7 Be5 37.c8Q Rc8 38.Qc8 Kg7 39.Rb7 Kh6 40.Qc6 Bg7 41.Qc7 g5 42.Qg7 (42.Qg7 Kh5 43.Qh7 Kg4 44.h3; 42.g4 Be5 43.Qh7) 1–0. Fournier,Frederic (1910) – juferse (1650), Active Blind, 2008.

3.c3 a5

4.b5 c5 5.a4 c4 (5...Nf6 6.d4+=) 6.Ba3 (6.e4 Qc7+=) 6...b6 7.g3 Bb7 8.Nf3 d6 9.Bg2 Nd7 10.0–0 Ngf6 11.Qc2 0–0 12.d3 cd3 13.Qd3 Nc5 14.Bc5 dc5 15.Nbd2 (15.Ne5 Bg2 16.Kg2 Qd5 17.Qd5 Nd5=) 15...Qd6 (15...Qd3!? 16.ed3 Nd5–/+) 16.Nc4 (16.Qd6!? ed6 17.Nc4=) 16...Qc7+= 17.Rfd1 (17.Qc2 Rad8=) 17...Rad8 (better is 17...Nd5 18.Rdc1 Rad8–/+) 18.Qe3? (better is 18.Qc2+=) 18...Nd5–+ 19.Qc1 (19.Rd5 Rd5 20.h3 Rfd8–+) 19...Nc3 20.Rd3?? Ne2 21.Kh1 Nc1 22.Rc1 Rd3 23.Re1 Bf3 24.Bf3 Rf3 25.Ne3 Rf2 26.Kg1 Ra2 27.Nc4 Bd4 28.Kf1 Qb7 29.Re2 Qf3 30.Ke1 Qc3 31.Nd2 Qc1# 0–1. golfx – manoos, playok.com, 2011. (=1.a3 g6 2.b4 Bg7)

4.Bb2 ab4

5.ab4 Nf6?? 6.Ra8+– 0–0 (6...Na6+–) 7.Rb8 c6 8.g3 Qc7 9.Ra8 b5 10.Bg2 Qb7 11.Ra1 d5 12.Nf3 Re8 13.0–0 e5 14.e3 e4 15.Nd4 h5 16.d3 Bg4 17.Qd2 ed3 18.Qd3 Ne4 19.Nd2 Nd2 20.Qd2 Bd4 21.cd4 1–0. golfx – tedii5456, kurnik, 2011. (=1.a3 g6 2.b4 Bg7 3.c3 a54.Bb2 ab4 5.ab4)

5.ab4 Ra1

6.Ba1 Na6 7.Qb3 d6 8.g3 Be6 9.Qa3 Qd7 10.Bg2 d5 11.Nf3 Nh6 12.0–0 0–0 13.d3 c6 14.Nbd2 Ra8 15.Qc1 Nc7 16.c4 Ra1 17.Qa1 Ba1 18.Ra1 dc4 19.Nc4 Bc4 20.dc4 Qe6 21.Rc1 Qe2 22.b5 Ng4 23.Rf1 Qc4 24.bc6 bc6 25.h3 Nf6 26.Ne5 Qe6 27.Nc6 Ncd5 28.Nd4 Qb6 29.Ne2 e6 30.Rc1 Nh5 31.Rf1 Qb2 32.Re1 Qd2 33.Kf1 Nc3 34.Nc3 Qc3 35.Re3 Qc4 36.Kg1 Nf6 37.Kh2 Nd5 38.Re4 Qc2 39.Ra4 Qf2 40.Ra8 Kg7 41.Ra1 Ne3 42.Rg1 h5 43.h4 f6 44.Kh3 g5 45.hg5 fg5 46.Bc6 Qg1 47.Be4 Nf5 48.Bg2 g4 0–1. golfx – gilesgsgs, kurnik, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 a5 4.Bb2 ab4 5.ab4)

6.Ba1 b6 7.g3 Bb7 8.Nf3 Nf6 9.Bg2 0–0 10.0–0 d6 11.e3 Nbd7 12.d4 Qa8 13.Nbd2 h5 14.Qb3 Bd5 15.c4 Bb7 16.Bb2 c6 17.Ra1 Qb8 18.c5 dc5 19.bc5 bc5 20.dc5 Nc5 21.Qc4 Ne6 22.Nd4 Nd4 23.Bd4 c5 24.Bc5 Bg2 25.Kg2 Rc8 26.Qb4 Qb4 27.Bb4 Nd5 28.Ra4 Rc2 29.Nf3 Ne3 30.Kg1 Rc1 31.Ne1 Nc2 32.Bd2 Rd1 33.Kf1 Rd2 34.Ra2 Bd4 35.Rc2 Rc2 36.Nc2 Bc5 37.Ke2 f6 38.f3 Kf7 39.h3 e5 40.g4 Ke6 41.gh5 gh5 42.Ne1 h4 43.Nd3 Be7 44.Nf2 f5 45.Nd3 Kd5 46.Ke3 e4 47.fe4 fe4 48.Nf4 Ke5 49.Ng6 Ke6 50.Ne7 Ke7 51.Ke4 Kf6 52.Kf4 Kg7 53.Kg4 Kh7 54.Kh4 Kh8 55.Kh5 Kh7 56.h4 Kh8 57.Kh6 Kg8 58.h5 Kh8 59.Kg6 Kg8 60.h6 Kh8 61.Kh5 Kh7 62.Kg5 Kh8 63.Kf6 Kg8 64.Kg6 Kh8 65.Kf5 Kh7 66.Kg5 Kh8 67.Kg4 Kh7 68.Kh5 Kh8 69.Kh4 Kh7 70.Kg5 ½–½. golfx – eternoaluno, kurnik, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 a5 4.Bb2 ab4 5.ab4)

6.Ba1 Nc6 7.Qb3 d6 8.Nf3 Be6 9.Qc2 Nb4?? (better is 9...Nf6=) 10.cb4+– Ba1 11.Nc3?? (better is 11.Qa4 c6 12.Qa1+–) 11...Bc3 12.Qc3 Nf6 13.g3 0–0 14.Bg2 c6 15.0–0 Nd5 16.Qb2 Qb6 17.Rb1 Ra8 18.e3 Ra4 19.Nd4?? Rb4 20.Nb3 Rb3 21.Qb3+= Qb3 22.Rb3 b5 23.Bd5 Bd5–/+ 24.Rc3 b4 25.Rc2 c5 26.d3 b3 27.Rb2 c4 28.e4?? Be6 29.dc4–/+ Bc4 30.f3 d5 31.ed5 Bd5 32.f4 e6 33.Kf2 f5 34.Ke3 Kf7 35.Kd4 Kf6 36.Kc3 g5 37.fg5 Kg5 38.Rb1 Kg4–+ 39.Rd1? Kh3 40.Rd2 h5 41.Kb2? h4 42.Rf2?? hg3 43.hg3 Kg3 44.Rd2 f4 45.Rd3 f3 46.Rc3 Kg2 47.Re3 f2 48.Re2 Kg1 49.Rf2 Kf2 50.Kc3 Ke2 51.Kb2 Kd2 52.Ka3 Kc1 53.Kb4 b2 54.Kc5 b1Q 55.Kd6 Qe4 56.Ke7 Ba2 57.Kd6 Qd5 58.Ke7 e5 (58...e5 59.Kf6 e4 60.Kg6 e3 61.Kf6 e2 62.Ke7 e1Q 63.Kf6 Qh4 64.Kg6 Qf7#) 0–1. golfx – azote, kurnik, 2011.

6.Ba1 e6 7.d3 Ne7 8.Nd2 0–0 9.e3 d6 10.d4 c5 11.bc5 dc5 12.g3 Qc7 13.Qb3 Bd7 14.Bg2 Bc6 15.Ngf3 Nd7 16.0–0 b5 17.dc5 Rc8 18.Nd4 Bg2 19.Kg2 Qc5 20.Qb5 Ne5 21.Qc5 Rc5 22.Rc1 Nd3 23.Rb1 Rc8 24.N2f3 Nd5 25.Rb7 Nc3 26.Bc3 Rc3 27.Nd2 Bd4 28.ed4 Rc2 29.Ne4 f5 30.Nf6 Kf8 31.Nh7 Ke8 32.Nf6 Kd8 33.d5 ed5 34.Nd5 Rf2 35.Kg1 Rd2 36.Rg7 Ne5 37.Nf4 Nf3 38.Kf1 Nh2 39.Ke1 Nf3 40.Kf1 Nh2 41.Kg1 Nf3 42.Kf1 Nh2 ½–½. golfx – luthesyca, kurnik, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 a5 4.Bb2 ab4 5.ab4)

6.Ba1 Nf6 7.Qb3 0–0 8.d3 e6 9.Nd2 c6 10.g3 d5 11.Bg2 b5 12.Ngf3 Bb7 13.0–0 Qc7 14.c4 Nbd7 15.cb5 cb5 16.Nd4 h5 17.Nb5 Qb6 18.Nd4 e5 19.N4f3 e4 20.de4 de4 21.Nd4 Bd5 22.Qb2 Ng4 23.N2b3 Bb3 24.Qb3 Bd4 25.Bd4 Qd4 26.e3 Qb6 27.b5 Nc5 28.Qb4 Nf6 29.Rc1 Rc8 30.Rc4 Kg7 31.Be4 Nfe4 32.Re4 Ne4 33.Qe4 Qb5 34.Qd4 Kh7 35.Qf6 Qc4 36.Kg2 Rc6 37.Qf4 Qe6 38.h4 Ra6 39.Qf3 Qc6 40.Qc6 Rc6 41.Kf3 Kg7 42.Kf4 Kf6 43.f3 Rc4 44.e4 Ra4 45.g4 hg4 46.fg4 Ke6 47.h5 gh5 48.gh5 Kf6 49.h6 Kg6 50.h7 Kh7 51.Kf5 Kg7 52.e5 Ra5 53.Kf4 Kg6 54.Ke4 Rb5 55.Kf4 Rb4 56.Ke3 Kf5 57.Kd3 Ke5 58.Kc3 Rh4 59.Kd3 f5 60.Kc3 f4 61.Kd3 f3 62.Kc3 Kf4 63.Kd3 Kg3 64.Ke3 f2 65.Ke2 Kg2 66.Ke3 f1R 67.Ke2 Rf8 68.Ke3 Ra4 69.Kd3 Ra7 70.Ke4 Re7 71.Kd5 Rd8 72.Kc6 Re1 73.Kc5 Rc8 74.Kd4 Rd8 75.Kc3 Rc1 76.Kb2 Rc7 77.Ka3 Rb8 78.Ka4 Ra7 0–1. golfx – marius1963, kurnik, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 a5 4.Bb2 ab4 5.ab4)

3.c3 b6

4.Bb2 c5 5.d3 cb4 6.ab4 Bb7 7.Nd2 Nc6 8.Qb3 Ne5 (8...Nf6 9.e4=) 9.Ngf3 Ng4 10.h3 N4f6 11.g3 e6 12.Bg2 h6 13.0–0 g5 14.e4 g4 15.hg4 Ng4 16.c4 f6 17.d4 White prepares the advance c5 17...h5 18.e5 f5 (18...Qc7 19.Rfe1+/–) 19.d5 Qe7 (19...Qb8 20.Rfe1+/–) 20.de6 (better is 20.Nd4 Be5 21.N2f3 ed5 22.Ne5 Ne5 23.Nf5+–) 20...Qe6?? (20...de6 21.Rfd1+/–) 21.c5 Qb3 22.Nb3 h4 23.Nh4+– Ne7?? 24.Bb7 Rb8 25.Bf3 bc5 26.Nc5 Ne5 27.Be5 Be5 28.Rab1 f4 29.Kg2 fg3 30.fg3 Rg8 31.g4 Rh8 32.Rh1 Ng6 33.Ng6 Rh1 34.Rh1 (34.Rh1 Bg7 35.Rh7+–; 34.Ne5?! Rb1 35.Ncd3 Rc8+=) 1–0. golfx – uomo, playok.com, 2012.

4.Bb2 Bb7

5.d3 a5 6.Nd2 ab4 7.ab4 Ra1 8.Qa1 Nc6 9.b5 Nb8 10.c4 Bb2 11.Qb2 f6 12.Ngf3 Nh6 13.g3 0–0 14.Bg2 d5 15.0–0 dc4 16.Nc4 c6 17.bc6 Nc6 18.Qb6 Qb6 19.Nb6 Nb4 20.Rb1 Nc2 21.Nd7 Bf3 22.Nf8 Bg2 23.Kg2 Kf8 24.Rc1 Nd4 25.e3 Ndf5 26.d4 Nd6 27.h3 Kf7 28.f3 e5 29.d5 e4 30.f4 g5 31.Rc7 Ke8 32.Rh7 Nhf7 33.h4 gf4 34.gf4 Nf5 35.Kf2 N7d6 36.h5 Nc4 37.Rh8 Kf7 38.h6 Nce3 39.h7 Ng4 40.Ke2 Kg7 41.Rg8 Kh7 42.Rg4 Nd4 43.Ke3 Nc2 44.Ke4 Nb4 45.d6 Nc6 46.d7 Nd8 47.Kf5 Kh6 48.Kf6 Kh7 49.Ke7 Nc6 50.Ke8 Nd4 51.d8Q Ne6 52.Qd3 Kh8 53.Qh3 1–0. golfx – gunard, kurnik, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 b6 4.Bb2 Bb7)

5.d3 d5 6.Nd2 e5 7.Ngf3 Nd7 8.g3 Ne7 9.Bg2 0–0 10.0–0 c6 11.c4 d4 12.e3 Nf5 13.ed4 ed4 14.g4 Nh4 15.Nh4 Qh4 16.h3 Rab8 17.Nf3 Qh6 18.Nd4 c5 19.Bb7 Rb7 20.bc5 bc5 21.Nf5 gf5 22.Bg7 Qg7 23.f3 fg4 24.fg4 Ne5 25.Rf5 Rb3 26.Qe2 Nd3 27.Rd1 Nb2 28.Rd2 Rh3 29.Kg2 Rh4 30.Rf4 Na4 31.Kg3 Qg5 32.Rf5 Qh6 33.Rh5 Rg4 34.Qg4 Qg7 35.Rg5 1–0. golfx – vogerman, playok.com, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 b6 4.Bb2 Bb7)

5.d3 e5 6.Nd2 d5 7.Ngf3 Nd7 8.g3 Ne7 9.Bg2 0–0 10.0–0 f5 11.e3 e4 (11...c5 12.Ng5 Rf6 13.f4=) 12.de4 (12.Ng5 Rf6+= (worse is 12...ed3 13.Ne6 Qc8 14.Nf8 Qf8 15.Qb1+/–)) 12...de4= 13.Nd4 c5?? (better is 13...Bd5=) 14.Ne6+– Qc8 15.Nf8 Nf8 16.Nc4 Qd8 17.Nd6?? Bc6 18.Rb1 Nc8?? 19.Nc8 Rc8+– 20.c4 Bb2 21.Rb2 Qd1 22.Rd1 Ne6 23.b5 Kf7?? 24.bc6 Rc6 25.Rd7 Kg8 26.Ra7 Nc7 27.Rb7 b5 28.cb5 Nb5 29.R2b5 c4 30.Rb8 Kf7 31.R5b7 Ke6 32.Re8 Kd5 33.Ree7 Kc5 34.Rbc7 c3 35.Rc6 Kc6 36.Re8 Kb5 37.Rc8 Ka4 38.Rc3 1–0. golfx – shigptare, playok.com, 2011.

5.d3 e6 6.Nd2 d6 7.Ngf3 Ne7 8.g3 Nd7 9.Bg2 c6 10.0–0 Qc7 11.e3 0–0–0 12.d4 Kb8 13.c4 f5? (13...h5 14.Qa4+=) 14.c5 (14.Ng5 Nf8 15.Nf7 e5+–) 14...d5? (better is 14...Ba6 15.Ng5 Nf8+/–) 15.cb6 Nb6 16.a4 h6 17.b5 c5 18.dc5 Qc5?? 19.Bg7+– Rhg8 20.Bf6 Rde8 21.Be7 Re7 22.Qc1 Qd6 23.a5 Nd7 24.b6! a6 25.Nb3 Rc8 26.Qb2 g5 27.Rac1 Rd8 28.Rc2 g4 29.Nh4 Ne5 30.Rfc1 Nd3 31.Qf6 Nc1 32.Rc1 Red7 33.Nc5 Re7 34.Nb7 Rb7 35.Qh6 d4 36.ed4 Qd4 37.Qe6 Qd2 38.Re1 Rbd7 39.Qe5 Rd6 40.Qf5 Qe1= 41.Bf1 Qe6?? 42.Qc5?? Rc8 43.Qb5?? ab5–+ 44.Ng2 Rd1 45.Ne3 Re1 46.Kg2 Re3 47.fe3 Qe3 48.Bb5 Rc2 49.Kf1 Qf2# 0–1. golfx – atko44, playok.com, 2012.

5.d3 e6 6.Nd2 Ne7 7.Ngf3 d5 8.g3 Nd7 9.Bg2 0–0 10.0–0 c5 11.e4 a5 12.ed5 Nd5 13.Qb3 Qc7 14.c4 Ne7 15.Bg7 Kg7 16.ba5 Ra5 17.Qc3 Kg8 18.Ne4 Be4 19.de4 Nc6 20.Rad1 Rfa8 21.Ra1 Nde5 22.Rfd1 Nf3 23.Bf3 Nd4 24.Rd4 cd4 25.Qd4 Ra3 26.Ra3 Ra3 27.Kg2 Rb3 28.e5 b5 29.cb5 Rb5 30.h4 h5 31.Qd6 Rc5 32.Be4 Kg7 33.Kf3 f5 34.ef6 Kf6 35.Qf4 Qf4 36.gf4 Rc3 37.Kg2 1–0. golfx – student31, playok.com, 2012.

5.d3 f5 6.Nd2 e6 7.Ngf3 Qe7 8.g3 g5 9.Bg2 g4 10.0–0? (better is 10.Nh4 Bg2 11.Ng2=) 10...gf3–+ 11.Nf3 Bf3 12.ef3 Nc6 13.f4 d5 (13...0–0–0 14.Re1–+) 14.Rc1? (14.Bd5 ed5 15.Re1 Ne5+=) 14...a5 (14...0–0–0 15.Re1–+) 15.d4 ab4–+ 16.cb4 Nh6?? 17.Rc6+– Ng4? 18.Re1 Nf6 19.Rce6 Qe6 20.Re6 Kf7 21.Rc6 Ne4 22.Rc7 Kg6 23.Qc2 Bf6 24.Qc6 Rhe8 25.Be4 fe4 26.Qd5 Rad8 27.Qb5 e3 28.g4 e2 29.Qh5# 1–0. golfx – wieslaw2325, playok.com, 2012.

5.d3 Nf6 6.Nd2 Ng4 7.Ngf3 d6 8.g3 Qd7 9.Bg2 0–0 10.0–0 Nc6 11.e3 Rab8 12.d4 f5 13.Qc2 a5 14.b5 Na7 15.a4 c6 16.c4 cb5 17.cb5 (17.ab5!? e6 18.h3+=) 17...Rbc8= 18.Qd3 h6 19.Rac1 Nf6 20.Rc8 Nc8 21.Rc1 Nd5 22.Nc4 Nb4 23.Qc3?? (better is 23.Qb3 e6 24.Bc3+=) 23...d5?? (23...Na2 24.Qb3 Nc1 25.Bc1–+) 24.Nb6?? Nb6–+ 25.Qc5? Na4 26.Qa7 Nb2 27.Qa5 N2d3 28.Rd1 Ra8 29.Qb6 Bc8 30.Nd2 Rb8 31.Qa5?? Rb5–+ 32.Qa3 Ba6 33.Bf1 Qb7 34.Nb3 Nc2 35.Nc5 Rc5 36.Qa4 (36.Qa4 Rc3 37.Rd3 Bd3 38.Bd3 Ne3 39.Bf1 Nf1 40.Kf1 Qb1 41.Kg2 Qe4 42.Kh3–+). golfx – shina9, playok.com, 2011.

5.d3 Nf6 6.g3 Bh1 7.f3 0–0 8.Kf2 d5 9.Nh3 Nfd7 10.Kg1 Bf3 11.ef3 c5 12.b5 e5 13.Nd2 a6 14.Kg2 ab5 15.c4 bc4 16.dc4 d4 17.Ne4 Nf6 18.Bc1 Ne4 19.fe4 Nd7 20.Qb3 Qc7 21.Bg5 h6 22.Bd2 Nf6 23.Bd3 Qb7 24.Nf2 Rab8 25.Rb1 Qd7 26.a4 Ng4 27.Qb5 Qb5 28.Rb5 Nf2 29.Kf2 Rfe8 30.g4 Re6 31.h4 Bf8 32.Bh6 Bh6 33.g5 Bf8 34.Kg3 Ra8 35.Kg4 Ra4 36.h5 gh5 37.Kh5 Ra3 38.Bf1 Rf3 39.Bg2 Rf2 40.Bh3 Rd6 41.Bf5 Be7 42.g6 Rh2 43.Kg4 fg6 44.Bc8 Rf6 45.Rb6 Rb6 46.Kg3 Rc2 47.Kf3 Rc3 48.Kg4 Rc4 49.Bd7 Kg7 50.Kf3 Rb3 51.Ke2 Rc2 52.Kd1 Rh2 53.Kc1 Rg3 54.Ba4 Rg1 55.Bd1 Bg5 56.Kb1 Rd1 0–1. golfx – cruzeiro666, playok.com, 2012.

5.Nf3 e6 6.g3 Ne7 7.Bg2 0–0 8.d4 d5 9.Nbd2 Nd7 10.0–0 c5 11.e3 cb4 12.cb4 Nf5 13.Nb3 Nf6 14.Rc1 Ne4 15.Nbd2 Ned6 16.Re1 Ba6 17.Ne5 Be5 (better is 17...f6!? 18.Nc6 Qd7=) 18.de5+/– Rc8? (better is 18...Nc4 19.Nc4 Bc4+/–) 19.ed6+– Qd6 20.Rc8 Rc8 21.Qb3 h5 22.a4 White plans b5 22...Bb7 23.b5 h4 24.Nf3 hg3 25.hg3 a6 26.ba6 Ba6 27.Bd4 Rb8?? 28.Rc1 Bd3?? 29.Ne5 Ne7 30.Qd3 f6 31.Nf3 e5 32.Bb2 e4 33.Qd4 ef3 34.Bf3 Rf8 35.Rd1 Kg7 36.Bd5 Rd8 37.e4 Rh8 38.Rd3 Rh5 39.Rf3 Nd5 40.ed5 Rd5 41.Qf6 Qf6 42.Rf6 Rd2 43.Rd6 (43.Rd6 Rb2 44.f4+/–) 1–0. golfx – 0471, playok.com, 2012.

3.c3 c5

4.Bb2 a5 5.d3 (better is 5.bc5 Nf6 6.Nf3+=) 5...ab4–/+ 6.ab4 Ra1 7.Ba1 cb4 8.Qb3 Qa5 9.Bb2 Nc6 10.g3 d6 11.Bg2 Be6 (better is 11...bc3 12.Bc3 Bc3 13.Nc3 Nf6–/+) 12.Nf3?? (better is 12.c4 Nf6 13.e3+=) 12...Bb3–+ 13.0–0 bc3 (13...Qa2 14.Bc1 bc3 15.Na3 Qe2 16.Ne1–+) 14.Bc3 Bc3 15.Nc3 Qc3 16.Ng5 h6 17.Ne4 Qg7 18.e3 Nf6 19.Nd2 Bd5 20.e4 Ba2 21.Ra1 0–0 22.Ra2 Ne5 23.Bf1 Rc8 24.Rb2 Nfg4 25.h3 Nf6 26.Rb7 Nh5 27.Re7 Qf6 28.Rb7 Nf3 29.Nf3 Qf3 30.Rb2 Rc1 31.Rd2 Rf1! 32.Kf1 Ng3 33.Ke1 Qh1# 0–1. golfx – ami93, playok.com, 2012.

4.Bb2 cb4 5.ab4 a5 6.ba5 Nc6 7.g3 d6 8.Bg2 Be6 9.a6 Qb6 10.ab7 Qb7 11.Ra8 Qa8 12.Na3 Bd7 13.Nb5 Qb7 14.Qa4 Nf6 15.e3 0–0 16.Ne2 Ra8 17.Qb3 Be6 18.c4 Nd7 19.Ned4 Nd4 20.Bb7 Nb3 21.Ba8 Bb2 22.0–0 Nd2 23.Rd1 Nc4 24.Rb1 Bf6 25.Nc7 Bf5 26.Rb4 Nd2 27.Bc6 Ne4 28.Re4 Be4 29.Be4 Nc5 30.Bc6 e5 31.e4 Bd8 32.Nb5 Be7 33.Bd5 Kf8 34.f3 Ke8 35.Kf2 Kd7 36.Ke3 f5 37.ef5 gf5 38.h3 Bg5 39.f4 ef4 40.gf4 Bh4 41.Nd4 Be1 42.Nf5 Bc3 43.Bg8 h5 44.Bf7 h4 0–1. golfx – ffrecia, playok.com, 2012.

4.Bb2 cb4 5.ab4 Nf6 6.Qb3 0–0 7.d3 Nc6 8.Nd2 a5 9.g3 ab4 10.Ra8 bc3 11.Bc3 Qc7 12.Bg2 d6 13.Ngf3 h6 14.0–0 Kh7 15.Rfa1 Be6 16.Qb2 Ra8 17.Ra8 Nd5 18.Bg7 Ncb4 19.Rh8 1–0. golfx – parvan, playok.com, 2012.

4.Bb2 c4=.

4.bc5 Nf6 +=.

3.c3 c6

4.Bb2 a5 5.Qc2 ab4 6.ab4 Ra1 7.Ba1 Nf6 8.d3 0–0 9.Nd2 d5 10.g3 Nbd7 11.Bg2 e5 12.Ngf3 Nb6 (12...Re8 13.0–0=) 13.0–0 (13.Ne5 Qe7 14.f4 Ng4 15.Ng4 Bg4=) 13...Qd6 14.e3 e4 (better is 14...Bf5!?=) 15.de4+/– de4 16.Nd4 Ng4 (16...Bf5 17.h3+=) 17.Ne4+/– Bd4?? (17...Qe7!?+/–) 18.ed4 (better is 18.Nd6 Be5 19.Nc8 Rc8 20.h3+–) 18...Qe6 19.Nc5 Qc4 20.Qd3 Qd3 21.Nd3 f5 22.Re1+– Na4 23.c4 Nb6 24.c5 Nd5 25.Ne5 Ngf6 26.Nc4 f4 27.Nd6 Bd7 28.Nb7 fg3 29.fg3 Ng4? 30.Bd5 cd5 31.Re7 Bc6 32.Na5 Bb5 33.c6?? Rf1+= 34.Kg2 Ra1 35.c7+/– Ba6 36.Rd7?? Rc1 37.Rd5?? Rc7 38.b5?? Ne3–+ 39.Kf3 Nd5 40.ba6 Ra7 41.Nc6 Ra6 42.Ke4 Rc6 43.Kd5 Rc8 44.Kd6 Kf8 45.Ke6 Rd8 46.d5 h5 47.d6 Ke8 48.Kf6 Rd6 49.Kg7 Ke7 50.Kh6 Kf6 51.h3 Rd8 52.g4 Rh8# 0–1. golfx – dzungla1973, playok.com, 2011.

4.Bb2 a5 5.d4 ab4 6.cb4 d5 7.Nf3 Nf6 8.Nbd2 0–0 9.e3 Nbd7 10.Bd3 Qc7 11.0–0 Ne8 12.Nb3 Nd6 13.Ne5 Ne5 14.de5 Nc4 15.Bc4 dc4 16.Nd2 b5 17.f4 Bf5 18.e4 Be6 19.Qe2 Rfd8 20.f5 gf5 21.ef5 Bd5 22.f6 Bf8?? 23.Qg4+– Kh8 24.Nf3 e6 25.Ng5 h6 26.Ne4 Kh7 27.Rf3 c5?? 28.Rg3 Be4 29.Qg8# 1–0. willow27 – kehrsam, ChessWorld.net, 2005.

4.Bb2 Qb6 5.d3 Nf6 6.Nd2 0–0 7.Nc4 Qc7 8.g3 d5 9.Na5 Bg4 10.Nf3 b6 11.Nb3 Be6 (11...Bf3!? 12.ef3 Nbd7+=) 12.Bg2= a6 13.0–0 Nbd7 14.Qc2 c5 15.Rac1 c4 16.dc4 dc4 17.Nbd4 Rad8?? (better is 17...Bd5 18.Nd2 Bg2 19.Kg2 Rfd8+=) 18.Ne6+/– fe6 19.Nd4 b5? (better is 19...Qd6!?+/–) 20.Ne6+– (20.Ne6 Qe5 21.Nd8 Rd8 22.Rcd1+–) 1–0. golfx – cx500, playok.com, 2011.

3.c3 Nc6

4.Bb2 a5 5.b5 Ne5 6.d3 c6 7.Nd2 cb5 8.Ngf3 Nf3 9.Nf3 Qb6 10.g3 Nf6 11.Bg2 Nd5 12.Rc1 0–0 13.Qb3 e6 14.c4 a4 15.Qb5 Qb5 16.cb5 Bb2 17.Rc5 b6 18.Rd5 ed5 19.0–0 Ra5 20.Rb1 Ba3 21.Ra1 Bc5 22.e3 d6 23.d4 Bb4 24.Bf1 Bd7 25.Rb1 Bc3 26.Rc1 Bb2 27.Rb1 a3 28.Nd2 Bb5 29.Bb5 Rb5 30.Kf1 a2 31.Rb2 Rb2 32.Nf3 a1Q 33.Kg2 Qa2 34.Ng5 Rf2 35.Kh3 Rh2 36.Kg4 h5 37.Kf4 Qf2 38.Nf3 g5 39.Kg5 Qf3 40.e4 Qe4 41.Kf6 Qd4 42.Ke7 Qe5 43.Kd7 Qe6 44.Kc6 Rc2 45.Kb5 d4 46.g4 d3 47.gh5 d2 48.h6 d1Q 49.h7 Kg7 50.h8Q Rh8 51.Ka6 b5 52.Ka5 b4 53.Ka4 b3 54.Ka3 b2 55.Ka4 b1Q 56.Ka5 Ra2 0–1. golfx – ja8888888888, playok.com, 2012.

4.Bb2 b5 5.d3 a5 6.Nd2 ab4 7.ab4 Ra1 8.Qa1 Nf6 9.g3 Ng4 10.Bg2 Bb7 11.Ngf3 0–0 12.0–0 e6 13.h3 Nh6 14.g4 f5 15.g5 Nf7 16.h4 h6 17.e4 hg5 18.Ng5 Ng5 19.hg5 Qg5 20.f4 Qg4 21.ef5 gf5 22.Nf3 e5 23.Ne5 Ne5 24.Rf2 Nd3 25.Rd2 Nf4 26.Qf1 Bg2 27.Rg2 Ng2 28.Qb5 Ne3 29.Kf2 Qf4 30.Ke2 Ng4 31.Qd5 Kh7 32.Qh1 Bh6 33.Qf3 Re8 34.Kd3 Qf3 35.Kc2 Qe2 36.Kb3 d5 37.Ba3 Qc4 38.Ka4 Ra8 0–1. golfx – firecube1, playok.com, 2012.

4.Bb2 e6 5.d3 b6 6.Nd2 Bb7 7.Ngf3 Nge7 8.g3 Ne5 9.Bg2 Nf3 10.Nf3 0–0 11.0–0 h5 12.Rb1 Nf5 13.e4 Nh6 14.c4 Bb2 15.Rb2 d5 16.cd5 ed5 17.e5 d4 18.Qe2 Nf5 19.Rc1 Rc8 20.Rc4 Bf3 21.Bf3 c5 22.bc5 Rc5 23.Rbc2 Qc7 24.Rc5 bc5 25.Qe4 Rc8 26.Kg2 a5 27.e6 fe6 28.Qe6 Kg7 29.Bh5 gh5 30.Qf5 Qc6 31.f3 Kh6 32.Qf4 Kg6 33.h3 Qe6 34.g4 hg4 35.hg4 Rc6 36.Kg3 Qe1 37.Rf2 Qg1 38.Rg2 Qe1 39.Kh2 Kg7 40.g5 Qe8 41.Kg3 Re6 42.Rh2 Qf7 43.Qf7 Kf7 44.Kg4 Re5 45.Rh6 1–0. golfx – omonstro, playok.com, 2012.

3.c3 d5

4.Bb2 c6 5.d3 Nf6 6.Nd2 0–0 7.g3 e5 8.e3 Bf5 9.Nb3 e4 10.de4 Ne4 11.Bg2 Nc3 12.Qc1 Ne4 13.Bg7 Kg7 14.Nf3 Nd7 15.0–0 Nb6 16.Nfd4 Qd7 17.Nf5 Qf5 18.Nd2 Nd2 19.Qd2 Nc4 20.Qd1 b5 21.a4 a6 22.ab5 ab5 23.Ra8 Ra8 24.Qd4 Qf6 25.Qc5 Ra2 26.e4 Nd2 27.Rd1 Ne4 28.Be4 de4 29.Rf1 Ra3 30.Rc1 Ra1 31.Ra1 Qa1 32.Kg2 Qf6 33.h3 Qf3 34.Kg1 e3 35.Qe3 Qe3 36.fe3 Kf6 37.Kf2 Ke5 38.Kf3 Kd5 39.Kf4 c5 40.bc5 Kc5 41.Kg5 b4 42.Kf6 b3 43.Kf7 b2 44.e4 b1Q 45.e5 Qf5 46.Ke7 Qe5 0–1. mzs78 – lmouse, playok.com, 2012. (=1.c3 g6 2.b4 Bg7 3.Bb2 d5 4.a3)

4.Bb2 d4 5.d3 dc3 6.Bc3 Bc3 7.Nc3 Qd4 8.Nb5 Qe5 9.Qc1 c6 10.Nf3 Qb5 11.g3 Be6 12.Bg2 Bd5 13.0–0 Nf6 14.e4 Be6 15.Qe3 Nbd7 16.h3 Ne5 17.Nd4 Qd3 18.Qd3 Nd3 19.Ne6 fe6 20.Rfd1 Ne5 21.f4 Nf7 22.f5 ef5 23.ef5 Nh5 24.g4 Nf4 25.Bf3 Nh3 26.Kg2 Nhg5 27.Be2 Ne5 28.Kg3 0–0 29.b5 Ne4 30.Kh3 Nc3 31.Rd2 Nb5 32.Bb5 cb5 33.Rb2 a6 34.a4 Nc4 35.Rb4 Nd6 36.ab5 gf5 37.ba6 ba6 38.gf5 Rf5 39.Rg4 Kh8 40.Kg3 a5 41.Rh1 Rg8 42.Rg8 Kg8 43.Ra1 Nc4 44.Ra4 Rc5 45.Kf4 e5 46.Ke4 Nd2 47.Kd3 Nf1 48.Ke2 Ng3 49.Kf3 Nf5 50.Ke4 Nd6 51.Ke3 h5 52.Kf3 Nc4 53.Kg3 e4 54.Kf4 e3 55.Ke4 e2 56.Ra1 h4 57.Kd3 1–0. golfx – tiguan44, playok.com, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 d5 4.Bb2)

4.Bb2 d4 5.cd4 Bd4 6.Bd4 Qd4 7.Nc3 a6 8.Nf3 Qf6 9.Qc2 Bg4 10.Rc1 Bf3 11.ef3 Nc6 12.g3 Qe6 13.Ne2 Rd8 14.Bg2 Nf6 15.0–0 0–0 16.Nf4 Qd6 17.d3 Nd5 18.Nd5 Qd5 19.Rcd1 Nd4 20.Qc4 Qc4 21.dc4 Nc2 22.Rd8 Rd8 23.f4 c6 24.b5 ab5 25.cb5 cb5 26.Bb7 Na3 27.Bc6 b4 28.Re1 e6 29.Re3 Rb8 30.Rb3 Nc2 31.Be4 Nd4 32.Rb2 f5 33.Bd3 Kf7 34.h3 Ke7 35.g4 Kd6 36.Kg2 Kc5 37.f3 fg4 38.fg4 Nc6 39.h4 Kd4 40.Bb1 Na5 41.f5 ef5 42.gf5 gf5 43.Bf5 h6 44.Kg3 Kc3 45.Rb1 b3 46.Kg4 Rb6 47.Kh5 Nc4 48.Bg6 Nd2 49.Rc1 Kd4 50.Rd1 Ke3 51.Re1 Kf2 52.Rd1 Nf3 53.Rb1 b2 54.Kh6 Ne5 55.h5 Kf3 56.Kg5 Ng4 57.h6 Rb5 58.Kh4 Nh6 59.Bd3 Rb6 60.Kh3 Ng4 61.Bc2 Ne3 62.Ba4 Ke2 63.Kg3 Kd2 64.Kf3 Rb4 0–1. golfx – liutprand, playok.com, 2012. (=1.a3 g6 2.b4 Bg7 3.c3 d5 4.Bb2)

4.Bb2 e5 5.d3 Nc6 6.Nd2 a6 7.Ngf3 Bg4 8.g3 Bf3 9.Nf3 Nge7 10.Bg2 0–0 11.0–0 Nf5 12.e4 de4 13.de4 Nd6 14.Qd2 (14.Qc2 b5=) 14...Qe7 (14...Ne4 15.Qe2 Nd6 16.Rad1+=) 15.Qe3 Rad8 16.Rad1 Nc4 17.Qc1 Rd1 18.Rd1 Rd8 19.Bf1 Rd1 20.Qd1 Nb2 21.Qb3 Nd1 22.Qd1 b5 23.c4 bc4 24.Bc4+/– Qd6 25.Qd5 Qd5+/– 26.Bd5 Nd4 27.Nd4 ed4 28.Kf1 d3+= 29.Ke1 Bc3 30.Kd1 Kf8 31.Bb7 a5= 32.ba5 Ba5 33.a4 c5 34.Ba6 Ke7 35.Bd3+/– Kd6 36.Bc4 f6 37.Ke2 Ke5 38.Ke3 g5 39.f4 Kd6 40.fg5 fg5 41.h4 h6 42.hg5 hg5 43.g4 Ke5 44.Bb5 Bb4 45.Bc6 Ba5 46.Kd3+/– Kf4 47.Bd7 Ke5 48.Bf5 Bb4 49.Kc4 Kd6 50.Kb5 Kc7 51.e5 Kb7 52.e6 Kc7 53.a5 Ba3 54.a6 Kb8 55.Kb6 c4 56.a7 Ka8 57.Be4# 1–0. golfx – grzesfi, playok.com, 2011.

4.Bb2 e5 5.d3 Nf6 6.e3 0–0 7.g3 Bg4 8.Qc2 e4 9.de4 de4 10.Bg2 Nbd7 11.Nd2 Ne5 12.Ne4 Nd3 13.Kf1 Nb2 14.Qb2 Qd3 15.Ne2 Ne4 16.h3 Nd2 17.Kg1 Be2 18.Qa2 Bc3 19.Rc1 Bf3 20.Kh2 Bg2 21.Kg2 Qe4 22.Kg1 Nf3 23.Kg2 Nh4 24.Kf1 Qh1 25.Ke2 Qf3 26.Kd3 Bf6 27.Rc7 Rfd8 28.Kc4 Qd5 0–1. mzs78 – mars2010, playok.com, 2012. (=1.c3 g6 2.b4 Bg7 3.a3 d5 4.Bb2)

4.Bb2 e6 5.d3 Nf6 6.e3 b6 7.Nd2 Bb7 8.Ngf3 Nbd7 9.Rb1 0–0 10.g3 c5 11.Bg2 cb4 12.ab4 a5 13.ba5 ba5 (13...Ra5 14.0–0=) 14.0–0 (14.Ba3!? Qc7 15.Bf8 Bf8 16.0–0+/–) 14...Ba6 15.c4 dc4 16.Nc4 Bc4 17.dc4 a4 (17...Qc7!?=) 18.Nd4 Ra6 19.Ba3 Re8 20.c5 (20.Nc6 Qc7 21.Bd6 Qc8 22.Ne7 Re7 23.Be7 Ra7+–) 20...Qc7 (20...Nd5!?+=) 21.Qd3 Ra5 22.c6 Nc5 23.Bc5 Rc5+= 24.Nb5 Qc8? 25.Nd6+– Nd5?? 26.Nc8 Rc8 27.Qa3 R8c6 28.Qa4 Rc8 29.Bd5 Rd5 30.Qa6 Rc2 31.Qb7 Rd1 32.Rfd1 (32.Rfd1 Be5 33.Rd8 Kg7 34.Rd7 Kh6 35.Rf7 Bc7 36.Qb4 Rc4 37.Qe7 Kh5 38.Rh7 Kg4 39.Qe6 Kf3 40.Qd5 Kg4 41.h3#) 1–0. mzs78 – rysiek51, playok.com, 2012. (=1.c3 d5 2.b4 g6 3.a3 Bg7 4.Bb2)

4.d4 Bf5 5.Nd2 Nf6 6.Ndf3 0–0 7.e3 a6 8.a4 Nc6 9.Nh4 b5?? (9...Bc8 10.Ba3+=) 10.a5?? (better is 10.Nf5!? gf5 11.ab5 ab5 12.Ra8 Qa8 13.Bb5+/–) 10...e5 (better is 10...Bd7+=) 11.Qf3?? (better is 11.Nf5 gf5 12.Ne2=) 11...e4 12.Qf4?? Nh5–+ 13.Ng6 Nf4 14.Nf4 Bh6 15.Nh5 Bg4 16.Ng3 f5 17.Be2 Qd6 18.Ra2 Nb4! 19.Rd2 Be2 20.N1e2 Nd3 21.Kf1 Rab8 Black intends b4 22.Nh5 b4 23.Bb2 bc3 24.Nc3 Rb2 25.Rb2 Nb2 26.Ke2 Rb8 27.Rb1 Qa3 28.Nd5 Qd3 29.Ke1 Qb1 30.Kd2 Qd1 31.Kc3 Qd3# 0–1. dumbroad – pjc49, ChessWorld.net, 2012.

3.c3 d6

4.Bb2 b6 5.d3 c5 6.Nd2 Nc6 7.Rc1 Bd7 8.Ba1 a5 9.g3 ab4 10.ab4 cb4 11.cb4 Nb4 12.Bg7 Ba4 13.Nb3 Nf6 14.Bh8 Kf8 15.Bg2 Kg8 16.Bf6 ef6 17.Ba8 Qa8 18.Nf3 Qd5 19.Rb1 Qc6 20.0–0 b5 21.Nfd2 Nd5 22.Qc1 Qb7 23.Nd4 b4 24.Qb2 Bd7 25.Nc2 Kg7 26.Nb4 Nb4 27.Qb4 Qd5 28.Ne4 Bh3 29.Qd6 Qf5 30.Qf4 Qe6 31.Rfc1 h6 32.Nc5 Qd5 33.e4 Qd4 34.Rb6 g5 35.Qe3 Qd8 36.f4 Qb6 37.fg5 hg5 38.Qf2 Qb5 39.e5 fe5 40.Ne4 Qd3 41.Qf6 Kh7 42.Ng5 1–0. mzs78 – ateistawolnyx, playok.com, 2012. (=1.c3 d6 2.b4 g6 3.a3 Bg7 4.Bb2)

4.Bb2 c5 5.d3 cb4 6.ab4 Nc6 7.Qc2 Nf6 8.Nd2 0–0 9.Rb1 b5 10.g3 Bb7 11.Bg2 Nb4 12.cb4 Bg2 13.Ngf3 Bh1 14.Kf1 Rc8 15.Qb3 Qb6 16.Kg1 Bf3 17.Nf3 Ng4 18.e3 Bb2 19.Qb2 Rc7 20.Qe2 Rfc8 21.Re1 Rc2 22.Qd1 Nf2 23.Qa1 Nd3 24.Rf1 Qe3 25.Kh1 Nf2 26.Kg2 Ng4 27.Kh3 h5 28.Rh1 Qf3 29.Qd4 Nf2 30.Kh4 R2c4 31.Qc4 Rc4 32.Kg5 Qe3 0–1. mzs78 – branchiale, playok.com, 2012. (=1.c3 g6 2.b4 Bg7 3.Bb2 d6 4.a3)

4.Bb2 e5 5.d3 Ne7 6.Nd2 0–0 7.g3 Nbc6 8.Bg2 Be6 9.Ngf3 Nd5 10.0–0 f5 11.e4 fe4 12.de4 (12.Ne4 h6=) 12...Nb6+= 13.b5 Ne7 (13...Na5 14.Qc2–/+) 14.a4 Nc4 15.Nc4 (15.Qb3 d5= (worse is 15...Nb2 16.Qe6 Kh8 17.Qa2+–)) 15...Bc4+= 16.Re1 Be6 17.Rc1 Bg4 18.Qd2?? (better is 18.h3 Be6 19.Ng5=) 18...Bf3–+ (18...Rf3?! 19.h3+=) 19.Bf3 Rf3 20.Kg2 Qf8 21.Re3 Re3 22.Qe3 Bh6 23.f4 ef4 24.gf4 Re8 25.Rf1 Nf5! 26.Qd3 Nh4 27.Kg3 Qe7 28.Qd5 Kf8 29.e5?? Nf5 30.Kf3 de5 31.fe5 Kg7 32.c4 Kh8 33.e6 Bg7 34.Bg7 Qg7 35.Qd7 Rf8 36.Qg7 Ng7 37.Ke2 Rf1 38.Kf1 Ne6 39.Ke2 Nc5 40.a5 Nb3 41.a6 ba6 42.ba6 Nc5 43.Ke3 Na6 44.Kd4 Kg7 45.Kd5 Kf6 46.Kc6 Ke5 47.Kb7 Nc5 48.Kc7 a5 49.Kc6 Kd4 50.Kb5 a4 51.Kb4 g5 52.h3 h5 53.Ka3 Kc4 54.Ka2 Kb4 55.Kb2 a3 56.Ka2 Na4 57.Ka1 Kb3 58.Kb1 a2 59.Ka1 Nc3 60.h4 Kc4 61.hg5–+ Ne4 62.g6 h4 63.g7 Nf6 64.Ka2 h3 65.Kb2 h2 66.Kc2 h1Q 67.Kd2 Qf3 68.g8Q Ng8 69.Kc2 Qd3 70.Kb2 Qc3 71.Ka2 Kb4 72.Kb1 Qd2 73.Ka1 Kb3 74.Kb1 Qd1# (74...Qe1#) 0–1. golfx – pizecik, playok.com, 2011.

4.Bb2 e5 5.d3 Nh6 6.Nd2 0–0 7.Rb1 Be6 8.Ngf3 f5 9.g3 Nd7 10.e3 g5 11.Nb3 f4 12.ef4 gf4 13.Bg2 Bg4 14.0–0 fg3 15.fg3 Nf5 16.Qe1 Qe8 17.Nbd2 Bh6 18.d4 Ne3 19.de5 Nf1 20.Qf1 Ne5 21.c4 Bd2 22.c5 Be3 23.Kh1 Rf3 24.Qe1 Qf7 25.Be5 de5 26.Rb3 Qb3 27.h3 Bf2 28.Qc1 Be3 29.Qe1 Bh5 30.g4 Bf2 31.Qc1 Rh3 32.Bh3 Qh3 0–1. mzs78 – supersz, playok.com, 2012. (=1.c3 g6 2.b4 Bg7 3.Bb2 d6 4.a3)

4.Bb2 e6 5.d3 Nc6 6.Nd2 a6 7.g3 Bd7 8.Bg2 h6 9.Ngf3 Qe7 10.0–0 g5 11.e4 g4 12.Nh4 h5 13.c4?? (13.Ra2 Bf6 14.c4 Bb2 15.Rb2 e5=) 13...Bf6 (better is 13...Bb2 14.b5 ab5 (14...Ba1?! 15.bc6 Bf6 16.cd7 Kd7 17.e5 de5 18.Bb7–+) 15.cb5 Nd4–+) 14.Bf6= Qf6 15.Nb3 Nge7 16.d4 Ng6 17.d5 Nce5= 18.Ng6 Ng6 19.de6 fe6 20.Qd4 e5 21.Qd5 Bc6 22.Qd3 h4–/+ 23.c5? hg3?? 24.fg3+= Qe7 25.cd6? cd6?? 26.Rad1 0–0–0?? 27.Na5 Bb5 28.Qc3 Kb8 29.Rf2 Rc8 30.Qe3 Qe6 31.Rfd2 Rhd8 32.Qb6 The backward pawn on d6 becomes a target 32...Rd7? 33.Rd6 Qe7?? 34.Rd7 Bd7 35.Qb7# 1–0. golfx – martin78ns, playok.com, 2012.

4.d3 e5 5.Bb2 Be6 6.e3 Ne7 7.g3 c6 8.Bg2 d5 9.Nd2 0–0 10.Rb1 Nd7 11.Ngf3 Qc7 12.0–0 Nf6 13.Ba1 (13.c4 e4 14.de4 dc4+=) 13...e4 14.de4 de4 (14...Ne4!? 15.Nd4 Nd2 16.Qd2 Rad8=) 15.Nd4 Bd5 (15...Rad8!?+=) 16.c4+/– Be6 17.Ne6 fe6 18.Ne4 Ne4 19.Be4 Rad8 20.Qb3 Ba1 21.Ra1 Qe5 22.Bg2 Nf5 23.a4 Rd7 24.b5 cb5 25.ab5 Rfd8 26.Ra7+– Qc5 27.Rb7 Rd2 28.Qb1 Ne3?? 29.Qa1 e5 30.Qa7 Qa7 31.Ra7 Nf1 32.Bf1 Rc2+= 33.Kg2 Rdd2 34.b6 Rf2 35.Kh3?? g5 36.b7+– Rf8 37.Ra8 Rb2 38.Rf8 Kf8+= 39.Bg2 Ke8 40.c5 Kd7 41.c6 Kc7+= 42.g4?? Rb3–+ 43.Bf3 Rf3 44.Kg2 Rc3 45.Kf2 Rc6 46.Ke3 Kb7 47.Ke4 Rc5 48.Kf5 h6 49.Kg6 e4 50.Kh6 e3 (50...e3 51.Kg6 e2 52.Kf7 e1Q 53.Kf6 Rc6 54.Kf7 Qe6 55.Kf8 Rc7 56.h4 Qf7#) 0–1. mzs78 – jihat13, playok.com, 2012. (=1.c3 g6 2.b4 Bg7 3.a3 d6)

3.c3 e5

4.Bb2 c6 5.d3 d5 6.Nd2 Ne7 7.g3 0–0 8.Bg2 Re8 9.Ngf3 Nd7 10.0–0 f5 11.c4 d4 12.e3 de3 13.fe3 Qc7 14.c5 b6 (14...Nd5 15.Qb3 e4 16.de4 fe4 17.Nd4+/–) 15.cb6 (15.Qb3 Kh8 16.Ng5 h6+–) 15...ab6 16.Nc4 (16.Qb3 Kh8 17.Ng5+=) 16...b5= 17.Na5 Ra5 (better is 17...Nd5!? 18.Qd2 Qb6+=) 18.ba5+/– Qa5 19.Bc3?? (19.Qb3 Nd5 20.Rac1 Qa4 21.Qa4 ba4 22.Rc6 Bb7+/–) 19...Qc7 (better is 19...Qc3 20.Qe2 Nc5–+) 20.Bb4 (20.a4 Nd5 21.Qd2 Nc5 22.ab5 Nb3=) 20...c5 21.Bc3 Bb7 22.Qb3+/– Kh8 23.Qb5 Bc6 24.Qb2 Nd5 25.d4 Ne3–/+ 26.dc5 Nf1 27.Rf1 Nc5 28.Bb4? Nd3 29.Qc2 Nb4 30.ab4 e4 31.Ng5 h6 32.Nh3 Qb6 33.Kh1 Bb5 34.Rc1 Kh7 35.Qc5 Qb7 36.Qc7? Qc7 37.Rc7 Bd3 38.Nf4 e3?? 39.Nd3+– e2 40.Bf3?? e1Q= 41.Ne1 Re1 42.Kg2 Rb1 43.Rb7 h5 44.b5 Kh6 45.Bc6 Rb2= 46.Kh3?? Bd4 47.g4?? hg4 48.Kg3 Bf2 49.Kf4–+ Bg1 50.h3 gh3 51.Be8 h2 52.Rb6 h1Q 53.Rg6 Kh7 54.Kf5 Qf3 55.Ke6 Re2 56.Kd6 Qd3 57.Kc6 Rc2 58.Kb7 Qd5 59.Bc6 Rc6 60.Rc6–+ Qb5 61.Kc7 Bh2 62.Kd7 Qd5 63.Kc8 Qc6 64.Kd8 Qc7 65.Ke8 ½–½. golfx – tedii5456, playok.com, 2011.

4.Bb2 d5 5.d3 Nf6 6.Nd2 0–0 7.g3 Be6 8.Bg2 Nbd7 9.Ngf3 Ne8 10.0–0 c5 11.Rc1 Rc8 12.Re1 b6 13.e3 f5 14.d4 e4 15.Ne5 Ne5 16.de5 Be5 17.b5 Ng7 18.a4 g5 19.Nb3 f4 20.ef4 gf4 21.Rf1 fg3 22.fg3 Qd7 23.Qe2 Bh3 24.Rf8 Rf8 25.Rf1 Bg2 26.Kg2 Rf1 27.Qf1 Nf5 28.Qe2 Qf7 29.Qg4 Ng7 30.Nc1 h5 31.Qe2 Qf5 32.Qe3 d4 33.cd4 cd4 34.Bd4 Qf3 35.Qf3 ef3 36.Kf3 Bd4 37.Nd3 Ne6 38.h3 Nc5 39.Nf4 Na4 40.Nh5 Nc3 41.Nf4 Nb5 42.Ne6 Bg7 43.g4 a5 44.h4 a4 45.Nf4 a3 46.Nd3 a2 47.h5 a1Q 48.Nf4 Qc3 49.Ke4 Qd4 50.Kf5 Nd6 51.Kg5 Qe5 52.Kh4 Qf4 53.h6 Bf6 54.Kh3 Qg4 55.Kg4 1–0. golfx – omonstro, playok.com, 2012.

4.Bb2 f5 5.d3 Nf6 6.e3 0–0 7.g3 d6 8.Bg2 c6 9.Nf3 Kh8 10.0–0 Be6 11.Nbd2 Na6 12.Rb1 Nc7 13.Ba1 Nh5 14.c4 Bg8 15.Qc2 Qe7 16.a4 Rae8 17.b5 c5 18.Nb3 b6 19.a5 f4 20.ef4 ef4 21.Bg7 Qg7 22.Qb2 fg3 23.Qg7 Ng7 24.hg3 d5 25.ab6 ab6 26.cd5 Bd5 27.Ng5 Bg2 28.Kg2 h6 29.Ne4 Rd8 30.Rfd1 Nf5 31.g4 Nd4 32.Nd4 Rd4 33.Rbc1 Rfd8 34.Ng3 Rd3 35.Rd3 Rd3 36.Ne2 Rb3 37.Nf4 Rb5 38.Ng6 Kg7 39.Ne7 Ne6 40.Kg3 Rb3 41.f3 Ng5 42.Nf5 Kf6 43.Nh4 Ke5 44.Rf1 c4 45.Nf5 Nf3 46.Rf3 h5 47.Ne3 hg4 48.Kg4 b5 49.Rf5 Kd4 50.Nc2 Kc3 51.Ne1 b4 52.Rf3 Kb2 53.Rf2 Ka3 54.Nc2 Ka4 55.Nd4 Rb1 56.Nc6 b3 57.Rf4 Kb5 58.Ne5 1–0. mzs78 – mars2010, playok.com, 2012.

4.d3 d5 5.Nf3 Ne7 6.Bb2 0–0 7.Nbd2 f5 8.Qb3 Kh8 (8...a5 9.e3+=) 9.c4= d4 10.e3 c5 11.bc5 Nec6 12.Qc2 Na6 13.Nb3 g5 (13...Nc5 14.Nc5 Qa5 15.Qd2 Qc5 16.ed4 Nd4 17.Nd4 ed4 18.Be2=) 14.h3 Bf6 15.Be2 g4 16.Ng1 (16.Nfd2 de3 17.fe3 gh3 18.Rh3 Qe7+=) 16...de3 17.fe3 f4 (17...g3 18.Qd2+=) 18.hg4 fe3 19.0–0–0 (19.Nf3!? Nd4 20.Nbd4 ed4 21.g5+=) 19...Nd4= 20.Bd4 ed4 21.Bf3 Bg5 (better is 21...Nc7!?=) 22.Ne2+/– Qe7 23.Rh5 (23.Qb2 Qg7+/–) 23...h6 (better is 23...Nc5 24.Nbd4 Ne6+=) 24.Ned4?? (24.Qb2!?+/–) 24...Nc5 (24...e2 25.Kb1 ed1R 26.Bd1–+) 25.Rdh1?? (25.Kb1 Rb8+=) 25...Kg7?? (better is 25...Nb3 26.Nb3 e2 27.Kb2 e1Q 28.Re1 Qe1 29.Qc3 Qc3 30.Kc3 Rf4–+) 26.Qc3 Qf6?? 27.Kb1 Rd8?? 28.Rg5 hg5 29.Nf5?? Bf5–+ 30.Rh7?? Kh7 31.Qf6= Rd3?? 32.Qe7 Kg6 33.Qc5 Kf6?? 34.Nc1 Rd2 35.Ka1 (35.Ka1 Be6 36.Qe3+–) 1–0. Cabrera,Diego (2095) – Garcia Vasquez,Jhoel (2215), Pan American–ch U16, 2004. (=1.a3 g6 2.b4 Bg7 3.c3 e5)

3.c3 e6

4.Bb2 d5 5.d3 Nd7 6.Nd2 Ne7 7.e3 0–0 8.Rb1 b6 9.g3 Bb7 10.Bg2 Rc8 11.Ngf3 c5 12.0–0 Ne5 13.Ne5 Be5 14.c4 Bb2 15.Rb2 Nc6 16.b5 Ne5 17.a4 Nd3 18.Rb3 dc4 19.Rc3 Bg2 20.Kg2 Qf6 21.Rc4 Nb2 22.Qc2 Nc4 23.Qc4 Rcd8 24.Ne4 Qf5 25.Ra1 Qd5 26.Qd5 ed5 27.Ng5 h6 28.Nf3 Kg7 29.a5 Rfe8 30.ab6 ab6 31.Ra6 Re6 32.Kf1 d4 33.ed4 cd4 34.Nd2 d3 35.Ra3 Rd5 36.Rb3 Re2 37.Rb2 Rc5 38.h4 Rc2 39.Rb3 Rcd2 40.Rc3 Rf2 41.Kg1 Rg2 42.Kf1 Rdf2 43.Ke1 d2 44.Kd1 Rg1 45.Kc2 d1Q 0–1. mzs78 – fakazer, playok.com, 2012. (=1.c3 g6 2.b4 Bg7 3.Bb2 e6 4.a3)

4.Bb2 d5 5.d3 Ne7 6.Nd2 0–0 7.g3 b6 8.Bg2 Bb7 9.Ngf3 Nd7 10.0–0 c5 11.b5 Nf5 Black intends d4 12.a4 d4 (12...Nd6 13.Qb3=) 13.cd4+= Nd4 14.Nb3 (14.Nd4 Bg2 15.Ne6 fe6 16.Bg7 Bf1 17.Bf8 Be2 18.Qe2 Nf8+=) 14...Nb3 (better is 14...Nf3!? 15.Bf3 Bf3 (15...Bb2?! 16.Bb7 Ba1 17.Ba8=) 16.Bg7 Be2 17.Qe2 Kg7–/+) 15.Qb3 Bb2 16.Qb2 Qf6 17.Qf6 Nf6 18.d4 cd4 19.Nd4+= Bg2 20.Kg2 Rfd8 21.Nc6 Rd6 22.f4 Ne4 23.Rad1 Rd1 24.Rd1 Nc5 25.Rd4 a6 26.e4 ab5 27.ab5 Nb3 28.Rd8 Rd8+= 29.Nd8 Nd4 30.Nc6 Nb5 31.Ne7 Kf8 32.Nc8 Nc3 33.Nb6 Ne4 34.Kf3 Nd6 35.h4 Ke7 36.g4 f5 37.g5 Nb5 38.Nc4 Nd4 39.Kg3 Kd7 40.Ne5 Kd6–/+ 41.Nf7 Kd5–+ 42.Nh6 e5 43.fe5 Ke5 44.Ng8 f4–+ 45.Kg4 Nf5 46.Nf6 Ne3 47.Kf3= Nf5 48.Kg4 Nh4 49.Kh4= Kf5?? 50.Nh7+– f3 51.Kg3 Ke4 52.Kf2 Kf4 53.Nf8 Kg5 54.Ne6 Kf5 55.Nd4 Kf4 56.Nf3 g5 57.Nd2 g4 58.Nc4 g3 59.Kg2 Kg4 60.Nd6 Kf4 61.Nf7 Kg4 62.Nh6 Kf4 63.Nf7 Kf5 64.Nd6 Ke5 65.Nc4 Ke4 66.Nd2 Kd3 67.Nf1 Ke2 68.Nd2 Kd2 69.Kf3 Kd3 70.Kg2 Kd2 71.Kf3 g2 0–1. golfx – ira102, playok.com, 2012.

4.Bb2 d5 5.d3 Nf6 6.Nd2 0–0 7.g3 (7.Ngf3 Qe7=) 7...c6 8.Bg2 Nbd7 9.Ngf3 e5 10.0–0 Re8 11.Rc1 e4 12.de4 de4 13.Ng5 e3 14.fe3 Re3 (14...Qb6 15.Nc4 Qb5 16.Nf7 Qc4 17.Nd6+=) 15.Rf3 Rf3 16.Bf3 Ne5 17.Bg2 h6 18.Ngf3 (18.Nge4 Ne4 19.Ne4 Bg4–/+) 18...Nf3 (18...Qb6!? 19.Kh1 Nfg4–+) 19.Bf3 Bf5 20.c4 Qb6 (20...a5!? 21.c5 ab4 22.ab4 Qe8=) 21.c5= Qc7 22.Nc4 Nd5?? 23.Bg7+– Kg7 24.Nd6?? Be6+/– 25.Qd4 f6 26.Ne4 b6? 27.cb6+– ab6 28.Nd2?? Rd8 29.Bd5 Rd5 30.Qe3 Qd6 31.Nf3 Rd1 32.Rd1+= Qd1 33.Kf2 Kf7 34.Qb6+– Qb3? 35.Qa5 Qd5 36.Qc7 Qd7 37.Qd7 Bd7 38.a4 Ke6 39.a5 Kd5 40.Ke3 c5+/– 41.bc5 Kc5 42.Nh4 Be8= 43.a6 Kb6 44.a7 Ka7 45.Kd4 Kb6 46.Kd5+/– Bf7 47.Kd6 Kb5? 48.Ke7+– Bc4 49.Kf6 Be2 50.Ng6 h5 51.Nf4 Bg4 52.Kg5 Kc4 53.Nh5 Bh5 54.Kh5 Kd4 55.g4 Ke5 56.g5 Kf5 57.Kh6 Kg4 58.g6 Kh3 59.g7 Kh2 60.g8Q Kh3 61.Qg5 Kh2 62.Kg6 Kh3 63.Kf5 Kh2 64.Kf4 Kh3 65.Qg3# 1–0. golfx – ceontea, playok.com, 2011.

4.Bb2 Qe7 5.d3 Nc6 6.Nd2 b6 7.g3 Bb7 8.Bg2 0–0–0 9.Ngf3 f5 10.0–0 Nf6 11.e3 h5 12.d4 d6 13.c4 e5 14.de5 de5 15.c5 Ng4 16.h3 e4 17.Nd4 Nd4 18.ed4 f4 19.hg4 hg4 20.Qg4 Kb8 21.Qf4 Rdf8 22.Qg4 Bc8 23.Qe2 Bb7 24.Ne4 Qf7 25.Ng5 Qd7 26.Bb7 Kb7 27.Qe4 c6 28.cb6 a6 29.a4 Re8 30.Qd3 Bh6 31.Nf3 Qh3 32.b5 Qh1 33.Kh1 Bg7 34.Kg2 Re6 35.ba6 Kb8 36.b7 g5 37.Ng5 Reh6 38.Nf3 Bf8 39.d5 Bd6 40.Bh8 Rh8 41.dc6 Bc7 42.Qd4 Rg8 43.a7 1–0. golfx – lenteja2011, playok.com, 2012.

4.Bb2 Qe7 5.d3 Nc6 6.Nd2 h5 7.Ngf3 Nh6 8.g3 b6 9.Bg2 Bb7 10.0–0 0–0–0 11.c4 Bb2 12.Rb1 Bg7 13.c5 h4 14.cb6 a6 15.bc7 Kc7 16.Qc2 hg3 17.fg3 Kb8 18.a4 Ng4 19.h4 Ne3 20.Qc1 Nf1 21.Kf1 Rc8 22.Qa3 Nd4 23.Nc4 Nf3 24.Bf3 d5 25.Na5 Qf6 26.Nb7 Kb7 27.b5 a5 28.b6 e5 29.Kg2 e4 30.Bg4 Rc2 31.Rf1 Re2 32.Be2 Qe5 33.Qc5 Rc8 34.Qa5 Ra8 35.Qb5 f5 36.Rc1 ed3 37.Bf3 Qb2 38.Qb2 Bb2 39.Rb1 Bd4 40.Bd5 Kb8 41.Ba8 Ka8 42.a5 Kb7 43.Rd1 Bc3 44.Rd3 Ba5 45.Rd6 Bb6 46.Rg6 Be3 47.Rf6 f4 48.gf4 Kc7 49.f5 Kd7 50.Re6 Bc1 51.Kf3 Kd8 52.Kg4 Kd7 53.Kh5 Kd8 54.Kg6 Kd7 55.h5 Kd8 56.h6 Bh6 57.Kh6 Kd7 58.Kg6 Kd8 59.Kf6 Kd7 60.Ke5 Kd8 61.Kd6 Kc8 62.Re7 Kd8 63.Rh7 Ke8 64.Ke6 Kf8 65.Rc7 Kg8 ½–½. golfx – lenteja2011, playok.com, 2012.

4.Bb2 Ne7 5.d3 0–0 6.Nd2 d5 7.g3 Nd7 8.Bg2 c5 9.bc5 Nc5 10.Ngf3 Bd7 11.0–0 Bc6 12.Nb3?? (12.Rb1 Na4 13.Nd4 Qd6=) 12...Nb3 (better is 12...Ba4–+) 13.Qb3= Re8 14.Rac1 e5 15.Rfe1 e4 16.de4 de4 17.Nd4 Nf5 18.Nc6 bc6 19.Qc4 e3 20.f4 Rc8 21.Qb4?? Qd2?? 22.Rcd1? Qc2?? 23.Rc1= Qd2 24.Rcd1?? Qc2 25.Bf3?? Rb8–+ 26.Rc1 Qb3 27.Qb3–/+ Rb3 28.Rc2 Reb8 29.Bc1 c5 30.g4? Nh4?? 31.Bd5 Rc3–/+ 32.Rc3 Bc3 33.Rf1 Bd4 34.h3 Kg7 35.Kh2 g5 36.Kg3 Ng6 37.f5? Ne5 38.a4 f6 39.a5 Rb5 40.a6 Ra5 41.Bb7 Rb5 42.Ba3?? Nc4 43.Bc1 Nd2 44.Rd1 Ne4?? 45.Kf3?? Rb1?? 46.Be4+– Bb2?? 47.Rd7 Kf8 48.Be3 Bd4 49.Bd4 cd4 50.Rd4 Ke7 51.Rc4 Rb6 52.Bd3 Kd6 53.Rd4 Kc5 54.Rc4 Kd5?? 55.Rc7+– Kd6 56.Ra7 Rb2 57.Rh7 Kc6 58.Rf7 Kc5 59.Rf6 Kb4 60.Rg6 Kc3 61.Rg5 Kd2 62.f6 Ra2 63.f7 Ra3 (63...Ra3 64.f8Q Rb3 65.Qf4 Kd1 66.Rc5 Rd3 67.ed3 Ke1 68.Rc1#) 0–1. golfx – merryxmas1, playok.com, 2012.

4.Bb2 Ne7 5.d3 b6 6.Nd2 Bb7 7.Ngf3 d6 8.g3 Nd7 9.Bg2 Rb8 10.0–0 0–0 11.Rb1 Re8 12.e3 c5 13.b5 Ne5 14.a4 (14.Qc2 Nf3 15.Nf3 Ra8=) 14...Nf3 (better is 14...Nd3!? 15.Ba1 d5–/+) 15.Nf3= Nd5 16.d4 cd4 17.cd4 e5 18.de5 de5 19.Qd2 Qe7 20.Rfd1 Red8 21.Qe2 Nb4?? (better is 21...Rbc8=) 22.Ba3+– Rd1 23.Qd1 Rd8 24.Qe2 e4 25.Nd2?? Bc3= 26.Ne4?? Be4–+ 27.Be4 Qe4 28.Bb4 Qb1 29.Kg2 Qb4 30.Qf3 Qa4 31.Qb7 Re8 32.Qd7 Qe4 33.f3 Qc2 34.Kh3 Qf5 35.Kg2 Qd7 (35...Qd7 36.h4 Re3 37.f4 Qd2 38.Kh3 Qf2 39.Kg4 Qg3#) 0–1. golfx – ami93, playok.com, 2012.

4.Bb2 Ne7 5.d3 d6 6.Nd2 c6 7.g3 (7.e4 a5=) 7...Bd7 (7...a5 8.Bg2+=) 8.Bg2 0–0 9.Ngf3 a6 10.0–0 e5 11.e4 f6 12.d4 Nc8 13.c4 Ra7 14.Nb3 White intends c5 14...b6 15.c5 bc5 16.dc5 dc5 (16...Be6 17.cd6 Bc4 18.Re1+/–) 17.Nc5+/– Bg4 (17...a5 18.Qb3 Kh8 19.Rfd1+/–) 18.h3 Bf3 19.Bf3 Qd1 20.Rad1 Nb6 21.Rd3 Nc4 22.Bc1 a5 23.ba5 Ra5+/– 24.Nb7 Rb5 25.Nd6 Nd6 26.Rd6 Rc5 27.Rfd1 Na6 28.Be3 Rc3 29.R6d3 Rd3 30.Rd3 h6 31.Rc3 Rc8 32.Be2 Nb8+/– 33.a4 f5 34.ef5 gf5 35.a5 e4 36.Rc2 Bc3?? 37.a6 Na6 38.Ba6 Rb8 39.Rc3 Rb1 40.Kg2 Kg7 41.Rc6 Ra1 42.Bh6 Kf7 43.Bc4 Ke7 44.Be6 Ra7 45.Bg5 Kf8 46.Bf5 e3 47.Be3 Re7 48.Bc5 Kf7 49.Be7 Ke7+– 50.g4 Kf7 51.f4 Kg7 52.h4 Kf7 53.h5 Kg7 54.g5 Kf7 55.h6 Kg8 56.g6 Kf8 57.Kg3 Ke7 58.h7 (58.h7 Kd8 59.h8Q Ke7 60.Qf6 Ke8 61.Rc8#) 1–0. golfx – pantera123, playok.com, 2012.

3.c3 f6

4.Bb2 e5 5.d3 Ne7 6.Nd2 d5 7.g3 0–0 8.Bg2 c6 9.Ngf3 Be6 10.0–0 h6 11.Rc1 Nd7 12.c4 d4 (12...a5 13.ba5 Qa5 14.cd5 Nd5 15.d4=) 13.c5 (13.e3 de3 14.fe3 a5=) 13...f5 14.e4 (14.Nc4 Nd5=) 14...f4 15.Nc4 Bc4 (15...b6 16.cb6 ab6 17.h3+=) 16.Rc4= g5 17.Qb3 Kh7 18.Rfc1 (18.g4 Ng8=) 18...Ng6 (18...g4 19.Nd2+=) 19.b5 (19.g4!?=) 19...g4+= 20.Ne1 f3 21.Bf1 h5 22.bc6 bc6 23.Qb7? Qc8?? 24.Rb4 Bh6 25.Qc8 Rfc8 26.Rc2? Ngf8 27.Rb7+= Rcb8 28.Rc7 Kg6 29.Rc6+/– Kg7 30.Rc7 Kf7?? 31.a4?? Ke8 32.Ba3 Kd8 33.Rc6 Bg7 34.Rd6 Kc7 35.c6 Nb6 36.a5 Nc8?? 37.Rd5+– a6 38.Rc1 Rb5+/– 39.Nc2 Rd5 40.ed5+/– Nd6 41.Bd6 Kd6= 42.Na1 Kd5 43.c7 Rc8 44.Nb3? Ne6–+ 45.h3 Rc7 46.Rc7 Nc7 47.hg4 hg4 48.Nd2 Bf8 49.Ne4 Bb4 50.Nf6–/+ Kc5 0–1. golfx – poganinbezdom, playok.com, 2011.

4.Bb2 Nh6 5.d3 Nf7 6.Nd2 0–0 7.g3 c6 8.Bg2 d5 9.c4 e5 10.e4 d4 11.Ngf3 a5 12.Qb3 White prepares b5 12...a4 13.Qc2 Be6 14.0–0 f5 15.ef5 Bf5 16.b5 (16.Rae1 Ra7=) 16...c5 (16...cb5!? 17.Nh4 bc4 18.Nf5 cd3 19.Qd3 gf5 20.Qf5 Qd7+=) 17.Ne4 (17.Rae1 Qb6=) 17...b6 (17...Be4 18.de4 Qf6 19.Ne1=) 18.Qd2 (better is 18.Nfd2 Nd7 19.Rae1=) 18...Nd6?? (better is 18...Be4 19.de4 Qf6+=) 19.Rae1?? (better is 19.Nd6 Qd6 20.Nd4+–) 19...Ne4 20.de4+= Be6 21.Qd3 Qc7 22.Ng5 Qe7 23.Ne6 Qe6 24.Bc1 Nd7 25.Bg5 h6 26.Bd2 g5 27.f4 ef4 28.gf4 gf4 29.Rf4 Ne5–/+ 30.Qg3 Rf4 31.Qf4? Nc4–+ 32.Qf5? Qf5 33.ef5 Rf8?? 34.Bd5+– Kh8 35.Bc4 Rf5 36.Re6 d3 37.Bd3 Bd4 38.Kg2 Rf2+= 39.Kg3 Rd2 40.Be4 Ra2 41.Rb6 Ra3 42.Kg4 c4 43.Ra6 c3 44.b6 Rb3 45.b7 a3?? 46.Ra8 Kg7= 47.b8Q Rb8 48.Rb8 Bc5? 49.Rb5 Bd6 50.Bc2 Kf6 51.Rb6 Ke5 52.h3 Bc5 53.Rh6 a2 54.Ra6 Kd4 55.Ra2 Ke3 56.h4 Bd4 57.h5 Kd2 58.h6 Kc1 59.h7 Bh8 60.Kg5 Kd2 61.Kg6 Kc1 62.Kf7 Bd4 63.Kg8 Bc5 64.h8Q Ba3 65.Qc3 Bb2 66.Qe1 Kc2+– 67.Qe2 Kb3 68.Qb2 Kc4 69.Qc2 Kd5 (69...Kd4 70.Qd1 Ke5 71.Re2 Kf5 72.Qf1 Kg5 73.Rg2 Kh5 74.Qh1#) ½–½. golfx – renzo211, playok.com, 2012.

3.c3 Nf6

4.d4 0–0 5.Nd2 e6 6.e4 d6 7.Ngf3 b6 8.e5 de5 9.Ne5 Nd5 10.Qc2 Nc6?? (10...Bb7=) 11.b5 (Better is 11.Nc6 Qe8 12.Ne5+–) 11...Ne5–/+ 12.de5 Be5 13.Bd3 Bb7 14.Bb2 Qf6 15.0–0–0 Nc3 16.Bc3? Bc3–+ 17.Ne4 Be4 18.Be4 Rad8 19.Rd8 Rd8 20.f3 Rd2 21.Qb3 Ba5 22.Bc2 Qa1 23.Qb1 Qa3 24.Qb2–+ Qe3 25.Rd1 Rg2 26.Kb1–+ Rh2 27.Qc1 h5 28.Qe3+– 1–0. Pawn – mcd2, Live Game Caissa's Web, 2004.

4.e3 0–0 5.f4 (5.Nf3 d5=) 5...e6 (5...d5 6.Nf3+=) 6.g3 (6.Nf3 a5=) 6...Ne4 (6...d6 7.Nf3+=) 7.Bb2 d5 8.d3 Nd6 9.Nd2 (9.Nf3 a5+=) 9...Nc6 (9...Re8 10.Bg2+=) 10.Ne2 (10.Bg2 a5+=) 10...Nf5 (better is 10...a5+=) 11.Rg1? (better is 11.Kf2+=) 11...Ne3–+ 12.Qc1 Nf1 (12...Re8 13.Nf3 Nf1 14.Rf1–+) 13.Rf1 d4 (13...Re8 14.c4–+) 14.cd4 (14.b5 Ne7–/+) 14...Nd4 (14...Re8 15.Nf3–/+) 15.Nd4 Bd4 16.Bd4 (16.Ne4 f6–/+) 16...Qd4 17.Ra2 (17.Ke2 e5 18.Ne4 Bh3–+) 17...Qe3 (17...a5 18.Qc5 Qd3 19.ba5–+) 18.Kd1 Qd3 19.Re1 (19.Qc4 Qd8–+) 19...Bd7 20.Rb2?? Ba4 (20...Ba4 21.Rc2 Rfd8–+) 0–1. Heartday – Wall,Bill, Microsoft Gaming Zone, 1998.

3.Nc3 a5

4.ba5 c6 5.Bb2 d5 6.e3 Nf6 7.Nf3 Qa5 8.Be2 Ne4 9.Nd4 Bf5?? (9...Nd6 10.Rb1=+) 10.Rb1?? (10.Ne4!? Qb6 11.Rb1 (11.Nf5?! Bb2 12.Nh6 de4+–) 11...Be4 12.f3+–) 10...0–0 (better 10...Bd4!? 11.ed4 Nd6=+) 11.Ne4 Be4 12.f3 Bd4 13.Bd4 Bf5 14.g4 (14.Rb7!? Qa3 15.0–0+=) 14...Bc8= 15.h4 c5 (15...Qc7 16.Bb2=+) 16.Bc3 (16.Rb5!? Qc7 17.Rc5 Qg3 18.Kf1=) 16...Qc7= 17.f4 (17.d4 Ra3 18.Rb3 Ra4 19.dc5 Qc5=+) 17...d4 18.Bb2 Nc6 19.h5 Be6 20.hg6 fg6 21.Bf3 Rad8 (21...de3 22.de3 Rad8 23.Qe2=+) 22.Qe2=+ Bd5 23.Qh2 e5 (23...e6 24.e4 Ba2 25.Ra1=) 24.Bd5= Rd5 25.e4 Rd7 26.f5 Rg7 27.d3 b5 (27...Rff7!?=) 28.Bc1+= g5? (28...Rb8!?+=) 29.Qh5 (29.Rb5 Na7 30.Rb1 c4+–) 29...c4 (29...b4!? 30.Qh6 ba3 31.Qe6 Kh8 32.Ba3 Nb4+–) 30.Bg5+– cd3 (30...Qa5 31.Ke2 Qc3 32.Rbc1 Qa3 33.Bh6+–) 31.cd3 Ne7? (31...Ra8+–) 32.0–0 Rgf7 33.Rf2 (33.Rb5!? Qc3 34.Rd1 Qa3+–) 33...Ng6 (33...Qc3 34.Rf3 (34.Rb5?! Qd3 35.Rb7 Ng6+=) 34...Qc5 35.Qh2+–) 34.Rh2 (better 34.Rb5!? Qc3 35.Qh3 Qa3+–) 34...Nf4 35.Bf4 ef4 36.g5 (36.Rb5?? Qc1 37.Kg2 Rc8–+) 36...Rg7 37.g6 (37.Rg2 Qc5+–) 37...Qc3 (37...Qc5 38.Rg2 hg6 39.Rg6+–) 38.Rd1 (38.Qe2 Qc7 39.Qa2 Qf7 40.Qf7 Rff7 41.Rh7 Rh7 42.gh7 Rh7 43.Rb5 Ra7+–) 38...Qb3? (38...Qc6 39.Rg2 hg6 40.Rg6+–) 39.Rdd2 (39.Kf2 Qc2 40.Kf1 Qc5+–) 39...Qb1? (better 39...Qa3!? 40.Kf2 Qc1+–) 40.Kf2+– Qc1 41.f6?? (better 41.Rd1 Qc2 42.Kf1+–) 41...Qd2–/+ 42.Kf1 Qd3 43.Ke1?? (43.Kf2 Qe3 44.Kf1 Qc1 45.Kf2 Qb2 46.Ke1 Qb1 47.Kd2 Qe4 48.gh7 Rh7 49.Qg5 Kf7 50.Re2=) 43...Qe4–+ 44.Kf1 (44.Qe2 Qg6 45.Qe6 Rgf7–+) 44...Qd3 (44...Rf6 45.Re2 Qb1 46.Re1 Qd3 47.Kf2 Qg3 48.Kf1 Rgg6 49.Re8 Kf7 50.Re5 Kf8 51.Qh1 Rc6 52.Rf5 Kg7 53.Rf7 Kf7 54.Qd5 Ke7 55.Qe4 Rce6 56.Ke2 Re4 57.Kd2 Re1 58.Kc2 Qc3) 45.Kf2 (45.Qe2 Qe2 46.Ke2 Rf6 47.Kd3–+) 45...Qe3 46.Kf1 Rf6 47.Qd5 (47.Re2 Qc1 48.Re1 Qc4 49.Qe2 Rfg6 50.Qc4 bc4 51.Re8 Kf7 52.Rc8 Rg1 53.Kf2–+) 47...Re6 48.Qd8 (48.Rh6 Qe2 49.Kg1 f3 50.Qd8 Re8 51.Qd5 Kh8 52.Rh7 Rh7 53.Qd4 Rg7 54.Qh4 Kg8 55.Qh8 Kh8 56.a4 Qg2) 48...Re8 49.Qd5 Qe6 (49...Kh8 50.Qg5 Qd3 51.Re2 Re2 52.Qd8 Re8 53.Kf2 Qe2 54.Kg1 Rg6 55.Qg5 Rg5 56.Kh1 Qg2) 50.Re2–+ Rg6 (50...Rd7 51.gh7 (51.Re6?? Rd5 52.Re8 Kg7 53.gh7 Kh7–+) 51...Kh8 52.Qe6 (worse 52.Re6 Rd5 53.Re8 Kh7–+) 52...Re6 53.Re6–+) 51.Re6 Rge6 52.Qd4 Re5 53.Qg1 Kf7 54.Qa7 R8e7 55.Qb6 h5 56.Qh6 R7e6 57.Qh7 Kf6 58.Qh6 Ke7 59.Qh7 Kd6 60.Qd3 Rd5 61.Qb3 Ree5 62.a4 ba4 63.Qa4 Ke6 64.Qe8 Kf6 65.Qh8 Kg5 66.Qg7 Kh4 67.Qf6 (67.Kf2 Rf5–+) 67...Kg3 68.Qg6 Rg5 69.Qc2 f3 70.Qc7 (70.Qf2 Kg4 71.Qg1 Kf4 72.Qh2 Kf5 73.Qh3 Kf6–+) 70...Rde5 71.Qc2 Re2 72.Qc7 Rge5 73.Qg7 Kh3 74.Qd7 Kh4 75.Qd4 Kg3 76.Qg1 Rg2 77.Qe3 Rb5?? (77...Rf5 78.Qe5 Kg4 79.Qe6–+) 78.Qe1?? (better 78.Qe5! Re5=) 78...Kh3–+ 79.Qe6 Kh2?? (better 79...Rg4 80.Qd7 Ra5–+) 80.Qe5= Re5 ½–½. guillaume54 (1795) – omke7 (1880), gameknot.com, 2016. (=1.a3 g6 2.b4 Bg7)

4.Bb2 ab4 5.ab4 Ra1 6.Qa1 d5 7.Nd5!+– Bb2 (7...Qd5 8.Qa5 Double attack (8.Bg7 Discovered attack; 8.Qa5 Decoy)) 8.Qb2 f6 9.Ne3 (9.e4 e6 10.Ne3 e5+–) 9...Be6 10.Nf3 Kf7?? (10...Nh6 11.g3+–) 11.g3 (11.Ng5 fg5 12.Qh8 h6+–) 11...Nd7? (better 11...Nh6+–) 12.Ng5!! fg5 13.Qh8 Qf8 (13...Ndf6 14.Bg2 Qd6+–) 14.Qh7 Qg7 15.Qg7 Kg7 16.Bg2 1–0. TwelveTeen (2495) – zoranp (2405), lichess.org, 2016. (=1.a3 g6 2.b4 Bg7)

4.Bb2 ab4 5.ab4 Ra1 6.Qa1 Nf6 7.Nd5 Nc6?? (better 7...Nd5 8.Bg7 Nb4=) 8.b5+– Nb8 (8...Nd5 9.Bg7 Ncb4 10.Qb2+–) 9.Nf6 ef6 10.Qa8 0–0 (10...Nc6 11.bc6 dc6 12.h4+–) 11.Qb8 d5 12.e3 Qd6 (12...c5+–) 13.Nf3 (better 13.Qa7 Re8 14.Nf3+–) 13...Qb4+= 14.Bc1 Qb1 15.Kd1 (better 15.Qc7 Qc1 16.Ke2+=) 15...Qa2?? (better 15...Bf5 16.Qc7 Rc8 17.Qc8 Bc8=+) 16.Qc7+– Bf5 17.Bd3 Rc8 (17...Bd3 18.cd3 Qb3 19.Ke2 Qb5+–) 18.Qd6 (better 18.Qb7 Rc2 19.Bf5 gf5 20.Ne1+–) 18...Bd3+= 19.cd3 Rc1 20.Kc1 Qa1 (better 20...Bf8 21.Qd8 Qa1 22.Kc2 Qa4 23.Kb1 Qb3 24.Ka1 Qa3 25.Kb1 Qb3 26.Ka1 Qa3 27.Kb1 Qb3=) 21.Kc2+– Qh1 22.Qd5 (better 22.Qd8 Bf8 23.Qf6+– (23.Qd5?! Ba3 24.d4 Qc1 25.Kd3 Qf1 26.Ke4 Qg2+–)) 22...Qg2 (22...Qa1 23.Qb7 Qa4 24.Kb2 Qb4 25.Kc1+–) 23.Qb7 Qf2? (better 23...Bf8+–) 24.Qc6 h5 (24...Bh6 25.b6 Kg7 26.Qe4+–) 25.b6 Qf1 (25...Bf8 26.b7 Qf3 27.Qf3+–) 26.b7 Qa1 27.b8Q Kh7 28.Qb2 (28.Qcc8 Qa4 29.Kb2 Qb4 30.Qb4 f5 31.d4 h4 32.Qbb8 g5 33.Qf5 Kh6 34.Qg5 Kh7 35.Qf5 Kh6 36.Qbf4) 28...Qa4 (28...Qb2 29.Kb2 Kg8+–) 29.Qb3 (29.Qa4 Bf8 30.Qf6 Bc5 31.Qf7 Kh6 32.Qaf4 g5 33.Qg5) 29...Qc6–+ 30.Qc3 (30.Qc4 Qf3 31.Qf7 f5–+) 30...Qf3 31.Qc7 f5 (31...Qd5 32.Qc4 Qd6 33.Qh4–+) 32.Qf7 Qc6 33.Kd1 (33.Qc4 Qd6 34.h3 g5–+) 33...Qd6 (33...Qh1 34.Kc2 Qh2 35.d4–+) 34.d4 (34.h4 Kh6–+) 34...Qb4 (34...Qh2 35.Qe7–+) 35.d5? (35.Qc7 Qb3 36.Ke1 Qd5–+) 35...f4! 36.ef4 (36.ef4 Qb1 Combination; 36.Qf4 Qb3 Double attack) 36...Qa4 37.Ke2 Qe4 38.Kd1 Qa4 (38...Qf3 39.Kc2–+) 39.Ke2 Qe4 40.Kf1?? (40.Kd1 Qh1 41.Kc2–+) 40...Qd3 (40...Qh1 41.Ke2 Qh2 42.Ke3 Qg1 43.Ke2–+) 41.Kf2 (41.Ke1 Kh6–+) 41...Qd2 42.Kf3 Qd3 43.Kf2 Qd2 44.Kf1?? (44.Kf3 Qd1 45.Kg2 Qg4 46.Kf2 Kh6–+) 44...Qd3 (44...h4 45.f5 Qf4 46.Kg2 Qg4 47.Kf2 gf5 48.Ke3–+) 45.Kg1?? (45.Kf2 Kh6 46.Kg2–+) 45...Qd1 46.Kg2 Qe2 (better 46...Qg4 47.Kf2 Kh6–+) 47.Kh3 (47.Kg3 Qg4 48.Kf2 Kh6–+) 47...Qe3 (47...Qg4) 48.Kg2–+ Qe2 49.Kg1?? (better 49.Kh3 Qg4) 49...Qe1 (better 49...Kh6 50.Qa7 Qd2–+) 50.Kg2 Qe2 ½–½. TwelveTeen (2480) – Berthe (2415), lichess.org, 2016. (=1.a3 g6 2.b4 Bg7 3.Nc3 a5)

4.Bb2 Nf6=+.

3.Nc3 d5

4.Bb2 Nc6 5.d4 a6 6.Nf3 Nf6 7.e3 0–0 8.Bd3 Re8 9.0–0 Qd6 10.Ne2 Bg4 11.Ng3 (better 11.Ne5=) 11...Ne4 (11...e5!? 12.de5 Ne5 13.Be5 Re5=) 12.Be4 (12.Ne4 de4 13.Be4 Rad8+–) 12...de4 13.Ne4 Qd5 14.Ned2 Rad8 15.c4 Qd7 16.h3 Bf5 (16...Bf3 17.Nf3 Qf5 18.Qb1+–) 17.e4 White prepares the advance d5 (17.Qb3 Qd6+–) 17...Bh3 (17...Nd4 18.Bd4 (18.ef5?! Nf3 19.Nf3 Bb2 20.Qd7 Rd7=) 18...Bd4 19.ef5 Ba1 20.Qa1 Qf5 21.Re1+–) 18.gh3 Qh3 19.Nh2 (better 19.Qe2+–) 19...e5? (better 19...Nd4 20.Bd4 Bd4=) 20.d5+– Nd4 21.Bd4 (21.Ndf3 f5 22.Re1 fe4 23.Re4 Qf5+–) 21...ed4 22.Qf3 Qd7 (22...Qf3 23.Nhf3 (23.Ndf3?! Re4 24.Rfd1 b5+=) 23...h6 24.Rae1+–) 23.Nb3 c6 24.Rad1 cd5 25.ed5 Re7? (better 25...b5 26.Nd4 bc4+–) 26.Nd4 Rde8 27.Ng4 (27.c5 Re5 28.Nc2 Rg5 29.Kh1 Rh5+–) 27...Re4 28.Nf6?? (better 28.Ne6! Rc4 29.Ne3+–) 28...Bf6–/+ 29.Qf6?? (better 29.Ne6 Rc4 30.Qf6 fe6 31.de6 Qe6 32.Qe6 Re6 33.Rd7 Rg4 34.Kh2–/+) 29...Rg4 (29...Qg4 30.Kh2 Qh5 31.Kg2 Rg4 32.Kf3 Qh3) 30.Kh2+– Ree4 31.Rh1?? (better 31.f4+–) 31...Rh4 32.Kg1 (32.Qh4 Rh4 33.Kg2 Qg4 34.Kf1 Rh1) 32...Qg4 33.Kf1 Rh1 0–1. alddhsfd (1870) – Lanzero9000 (1850), lichess.org, 2019. (=1.a3 g6 2.b4 Bg7 3.Nc3 d5)

4.Bb2 e5 5.e4 Nf6 6.ed5 Nd5 7.Bc4 Be6 8.Qe2 (8.Qf3 c6=) 8...f6 (8...Nf4 9.Qf1 Bc4 10.Qc4 Ng2 11.Kf1–/+) 9.d4 (better is 9.Nd5 Bd5 10.Nf3=) 9...Qd6?? (better is 9...Nf4!? 10.Qe4 Bc4 11.de5 fe5 12.Qc4 Ng2 13.Kf1 Nf4–/+) 10.Nb5 (10.Bd5 Bd5 11.de5 fe5+–) 10...Qd7 (better is 10...Qe7!? 11.de5 fe5 12.Be5 Bg4 13.Qg4 Qe5 14.Qe2 Qe2 15.Ke2 Ba1 16.Bd5 c6+=) 11.de5+/– f5 (better is 11...fe5!? 12.Bd5 Bd5+–) 12.Rd1 c6 13.Nd6 Ke7 14.Bb3 Nf4 15.Nf5! Kf7 16.Rd7 (16.Rd7 Nd7 17.Be6 Ne6 18.Nd6 Ke7 19.Nb7+–) 1–0. Hardt,Bernd – Forde,F, Koblenz op, 1990.

4.Bb2 Nf6 5.Rb1 0–0 6.Nf3 Bg4 7.e3 Re8 8.Be2 Nbd7 9.h3 Bf3 10.Bf3 c6 11.0–0 b5 12.d3 e5 13.e4 d4 14.Ne2 Nb6 15.c3 dc3 16.Bc3 Na4 17.Be1 Qb6 18.Nc3 Nc3 19.Bc3 c5 20.bc5 Qc5 21.Qb3 a6 22.Rfc1 Bf8 23.Bb4 Qd4 24.Rc7 Nd7 25.Bg4 Ra7? (better is 25...Rad8!?+=) 26.Bc3 Rc7 27.Bd4 ed4 28.Bd7 Rd7 29.Rc1 Rb8 30.e5 Rb6 31.Rc8 Kg7 32.f4 a5 33.Ra8 a4 34.Ra4 ba4 35.Qb6 Ba3 36.Qa5 Bc1 37.Qa4 Be3 38.Kh2 Rb7 39.Kg3 Rb2 40.Qd7 Kg8 41.e6 fe6 42.Qe6 Kg7 43.Qe5 Kg8 44.f5 gf5 45.Qf5 Kg7 46.Qe5 Kg8 47.Kg4 Rf2 48.g3+– 1–0. Ivanets,Vladimir (2265) – Brygov,Igor (1900), Khanty Mansiysk Governor Cup, 2007. (=1.a3 g6 2.b4 Bg7 3.Nc3 d5)

4.Bb2 Nf6 5.Nf3 0–0 6.e3 a6 7.d4 (7.Bd3 Nc6=+) 7...Nc6=+ 8.h3 e6 (8...Re8 9.Bd3=+) 9.Bd3= Ne8 10.0–0 Nd6 11.Ne2 b5 12.Nf4 Bb7 13.Qe2 Qe7 (13...Nc4 14.Bc3=) 14.Rfd1 (14.Rfb1 Rfd8=) 14...Rfe8 15.Bc3 Nc4 (15...Ne4 16.Bb2=) 16.Bc4 (16.e4 Bh6 17.g3 Bf4 18.ed5 ed5 19.Qe7 Ne7 20.gf4 f6=) 16...bc4 17.a4 (17.Ne5 Qd6 18.Nf3 Ne7=+) 17...Na7 (17...Nb4 18.Bb4 Qb4 19.Rab1 Qa4 20.Rb7+–) 18.Nd2 Nc8 19.e4 Rb8 (19...Nd6 20.e5 Nf5 21.Nf1=) 20.Re1 (20.e5 Bc6=) 20...Nd6 21.e5 Nf5 22.b5 c5 (22...Ra8 23.ba6 Ra6 24.a5=+) 23.Nf3= ½–½. Hrubaru,Mircea (1775) – Clement,Etienne, FICGS, 2006. (=1.a3 g6 2.b4 Bg7 3.Nc3 d5)

4.d4 Nc6 5.e3 e5 6.Nge2 (6.Bb5 a6 7.Bc6 bc6=) 6...ed4 (6...Nf6 7.b5 ed4 8.ed4=+) 7.ed4 (7.Nd4 Nge7=) 7...Nge7 8.Bb2 (8.Bg5 h6 9.Be3 Nf5=+) 8...0–0 9.b5 (9.Qd2 Nf5–/+) 9...Na5 Black fights for the Initiative 10.Ng3 Re8 11.Be2 h5 12.0–0 h4 13.Nh1 Nf5 14.Bf3? (better 14.Na4!?–/+) 14...Nc4–+ 15.Rb1 Nd4 16.Bd5 Ne2! 17.Ne2 (17.Qe2 Re2) 17...Nb2 18.Qd2 Be6 19.Nc3 Bd5 20.Nd5 c6 21.bc6 bc6 22.Qc1 cd5 23.Rb2 Bb2 24.Qb2 Re2 25.Rd1 (25.Qd4 Rc2 26.Rd1 Rc4–+) 25...Qc7 26.Rc1 (26.h3–+) 26...Rae8 27.Qb4 Qc2! 28.Rf1 (28.Rc2 A deflection 28...Re1 A beautiful mate combination) 28...d4! 29.h3 (29.Qd4 Deflection from e1 29...Re1) 29...d3 30.Kh2 Qc7 (30...d2 31.Qh4 Re1 32.Ng3–+) 31.Kg1 (31.g3 d2 32.Qd4 Qc2 33.Qa7 hg3 34.Ng3 d1Q–+) 31...d2 32.Qh4 0–1. keene2019 (1700) – thiof (2115), gameknot.com, 2020. (=1.a3 g6 2.b4 Bg7 3.Nc3 d5)

4.d4 e6 5.Bb2 (5.Nf3 Nf6=) 5...Ne7 (5...Nf6 6.e3=) 6.e4 de4 7.Ne4 0–0 8.c4 (better 8.Nf3!?=) 8...Nf5 Pawn d4, live or die! 9.Ne2 Nc6 d4 draws heavy fire 10.g3 (10.Qd3 a5–/+) 10...Ncd4 (10...a5 11.Bg2–/+) 11.Nd4 Nd4 Black fights for the Initiative 12.Bd4 (12.Bg2 e5–/+) 12...Bd4–+ 13.Rc1 Bb2 (13...a5 14.Bg2–+) 14.Qd8 (14.Rb1!? Qd1 15.Kd1 Rd8 16.Kc2–/+) 14...Rd8–+ 15.Rc2 (15.Rb1 Ba3 16.Bg2 a5 17.ba5 Ra5–+) 15...Ba3 16.b5 Be7 17.Bg2 e5 (17...a5 18.ba6 Ra6 19.f4–+) 18.0–0 (18.Nc3 Bb4 19.0–0 Bf5–+) 18...Bd7 (18...a5 19.Nc3–+) 19.f4 (19.Rd1–+) 19...f5 20.Nd2 (20.fe5 fe4 21.Be4 c6–+) 20...e4 21.Re1 (21.Rb1 a5–+) 21...c6 22.bc6 (22.Rb1 a6 23.ba6 ba6–+) 22...Bc6 23.c5 (23.Ne4 Be4 24.Be4 Bc5 25.Kf1 fe4 26.Re4 a5–+) 23...Bf6 (23...Ba4 24.Ra2 Bc5 25.Kh1–+) 24.Re3 (24.h3–+) 24...Bd4 25.Nb3 (25.Nf1–+) 25...Be3 26.Kf1 Bb5 (26...Rd3 27.Rb2–+) 27.Ke1 Rd3 28.Rb2 (28.Nc1 Rd5 29.Bf1 Bf1 30.c6 bc6 31.Kf1 Rd1 32.Ke2 Rc1 33.Rb2–+) 28...Rad8 29.Rb1 Ba4 (29...Bg1 30.Bf1 Re3 31.Be2 Re2 32.Kf1 Be3 33.Nd4 Rh2 34.Rb5 Rd4 35.Ke1 Rdd2 36.Rb7 Rh1) 30.Na5 (30.Bf1 Bb3 31.Rb3 Rd1 32.Ke2 Bc1–+) 30...Bd2 31.Kf1 Ba5 32.Ra1 Bb5 33.Ra5 Rd1 34.Kf2 R8d2 35.Ke3 Re2 0–1. keene2019 (1905) – notvinnik (2050), gameknot.com, 2020. (=1.a3 g6 2.b4 Bg7 3.Nc3 d5)

4.d4 Nf6 5.Nf3=.

3.Nc3 e5

4.Bb2 d5 5.e4 d4 6.Nce2 Nf6 7.Ng3 h5 8.f3 h4 9.N3e2 c5 10.bc5 Na6 11.Nc1 Nc5 12.Nd3 Nfd7 13.Nh3 0–0 14.Nhf2 Qg5 15.a4 Rd8 16.a5 b6 17.Nc5 bc5 18.d3 Ba6 19.Bc1 Qe7 20.f4 ef4 21.Bf4 c4 22.Be2 Be5 23.Bc1 Nc5 24.0–0 (24.dc4? d3 25.cd3 Ba1–+) 24...cd3 25.cd3 Rab8 26.Ng4 Bg7 27.Bh6 Bc8 28.Bg7 Kg7 29.Nf6 Be6 30.Bg4 Nd7 31.Be6 Qe6 32.Nd5 f6 33.Rc1 Rdc8 34.Qa4 Rc1 35.Rc1 Rb2?? (better is 35...h3 36.Qd4 Rb7+–) 36.Rc7 (36.Qd4?! Rb7+–) 36...Rb1 37.Kf2 Rb2 38.Kf3 1–0. Kristovic,Marijan (2310) – Stipic,Marko, Zadar op, 1997. (=1.a3 g6 2.b4 Bg7)

4.Bb2 d6 5.e3 Ne7 6.d4 (6.Nf3 0–0=) 6...f6 (6...ed4 7.ed4 0–0 8.Nf3=) 7.de5 fe5 8.Nf3 0–0 9.Bc4 Kh8 10.0–0 d5 (better 10...e4!? 11.Nd4 d5=) 11.Nd5+– Nd5 (11...Bg4 12.Nc3 Qe8 13.Be2+–) 12.Qd5 c6? (better 12...Qd5 13.Bd5 c6+–) 13.Qd8+– Rd8 14.Rfd1 Nd7 (14...Rd1 15.Rd1 Nd7 16.e4+–) 15.Be5! b5 (15...Ne5 16.Rd8 Pinning (16.Rd8 Deflection; 16.Rd8 Decoy); 15...Be5 16.Ne5 Combination) 16.Bg7 (16.Be6 a5 17.ba5 Ra7+–) 16...Kg7 17.Ng5 bc4 (17...Rh8 18.Ne6 Kf6+–) 18.Ne6 Kh6 19.Nd8 Ne5 20.Nf7 (better 20.f4 Ng4 21.e4+–) 20...Nf7+– 21.Rd8?? (better 21.f4+–) 21...Nd8–+ 22.Rc1 (22.Rd1 Ne6–+) 22...Be6 23.Rd1 a5 24.Rd6 (24.ba5 Nf7–+) 24...Bd5 (better 24...ab4 25.Rd1 b3 26.Kf1–+) 25.h3 Nf7 26.ba5 (26.Rd7 ab4 27.ab4 Ra1 28.Kh2–+) 26...Nd6 27.Kh2 Ra5 28.Kg3 Ra3 29.Kf4 Ra2 (29...Bg2 30.h4–+) 30.Ke5 Nb5 31.Kf6 Bg2 32.Ke5 Bh3 33.Kf4 Rc2 34.Kg3 Bf5 (34...c3 35.f3 Bf1 36.Kg4 Rg2 37.Kf4 c2 38.Ke5 c1Q 39.Ke6 Qe3 40.Kd7 Rd2 41.Kc6 Qa7 42.f4 Qc7) 35.Kf4 Rf2 36.Kg3 Re2 37.Kf3 Nc3 38.Kf4 Re1 39.Ke5 Re3 (39...Nb5 40.Kf4 c3 41.Kg3 c2 42.Kf3 c1Q 43.Kg3 Qe3 44.Kg2 Be4 45.Kh2 Re2) 40.Kd6 Rd3 (40...Ne4 41.Kc7 c3 42.Kd8 c2 43.Kc7 c1Q 44.Kb7 Rb3 45.Kc7 Qd2 46.Kc6 Qd6) 41.Kc7 ½–½. alddhsfd (1840) – Teching00 (1745), lichess.org, 2019.

3.d4 a5

4.Bb2 Na6 5.b5 Nc5 6.Nc3 Ne6 7.Nf3 c5 8.e3 cd4 9.ed4 a4 10.Bc4 d6 11.0–0 Qc7 12.Ba2 Nf6 13.Re1 0–0 14.Qd2 Qa5 15.Rab1 Re8 16.d5 Nc5 17.h3 Bf5 18.Nd4 Bd7 19.Re3 (better is 19.Re2+=) 19...Bh6–/+ 20.Nf3 Be3 21.Qe3 Bf5 22.Nd4 Bd7 23.Qh6 (better is 23.Nf3!? e5 24.de6 Be6 25.Be6 Re6 26.Qh6=) 23...Qd8 24.g4 Qc8 25.Nce2 Nce4 26.Nf4? (26.Qe3 Qc5+=) 26...Bg4 27.hg4 Qg4 28.Ng2 Ng5 29.Re1 Nf3 30.Nf3 Qf3 31.c4 (better is 31.Ne3!?=) 31...Qf2–/+ 32.Kf2 Ng4 33.Kg3 Nh6 34.Ne3 e6 35.Ng2? (better is 35.Rh1!? Nf5 36.Nf5 ef5 37.Bc1–/+) 35...ed5–+ 36.cd5 Re1 37.Ne1 Re8 38.Kf2? (38.Nc2 Re2 39.Bb1–+) 38...Ng4 39.Kf1 Ne3 40.Kg1 Nd1 41.Nd3 Nb2 42.Nb2 Re2 43.Na4 Ra2 44.Nb6 Rc2 45.a4 Rc5 46.Nd7 Rc4 47.a5 Rb4 48.b6 Rb5 49.Nf6 Kf8 50.Nh7 Ke7 51.Ng5 Ra5 0–1. Frank,Detlev – Oelrichs,Manfred, Pinneberg–ch, 2003. (=1.a3 g6 2.b4 Bg7)

4.b5 a4 5.e4 c5 6.Be3 cd4 7.Bd4 e5 8.Bb2 Ne7 (better is 8...Nf6!? 9.Be5 0–0+=) 9.Qd6+– 0–0 10.Bc4 (10.Nd2 b6 11.Ngf3 Bb7 12.Be5 Nc8+/–) 10...Kh8 (better is 10...b6!?+/–) 11.Be5 f6 12.Bd4 Ng8 13.Nd2 Qe7 14.Bc5 Qd6 15.Bd6 Re8 16.Bf7 Rd8 17.Ne2 f5 18.e5 b6 (18...Nh6 19.Bd5+–) 19.Bc7 (better is 19.Bd5!? Ra5 20.Rb1 Nh6+–) 19...Rf8 20.Bd5 Ra7 21.Bb8 Ra5 22.Bd6 Re8 23.Nc4 Rb5 24.Nc3 Rd5 25.Nd5 Bb7 26.Nc7 Rc8 27.f3 Ne7 28.Nb6 Rg8 29.Be7 Be5 30.Rd1 Bc7 31.Bf6 Rg7 32.Rd7 Bb6 33.Rb7 (33...Kg8 34.Rg7 Kf8 35.Rb7 Ba5 36.c3+–) 1–0. pierred – doktorb5, Yahoo, 2005.

3.d4 b6

4.Bb2 Bb7 5.e3 d5 6.Nf3 Nd7 7.c4 dc4 8.Bc4 e6 9.0–0 Ne7 10.Nbd2 0–0 11.Rc1 c5 12.Nb3 Bf3 13.Qf3 (13.gf3?! cb4 14.ab4 a5=) 13...cd4 14.Bd4 Bd4 15.Nd4 Ne5 16.Qg3 Nc4 17.Rc4 Nf5 18.Qh3 Qf6 19.Nf3 Rfd8 20.Rc7 a5 21.e4 Nd4 22.Nd4 Qd4 23.Qf3 Rd7 24.e5 Rad8 25.Rd7 Rd7 26.ba5 ba5 27.Qa8 Kg7 28.Qa5 Rd5 29.Qb4 Qe5 30.g3 Qd4 31.Qb3 Qc5 32.Qb2 Qd4 33.Qa2 Qc3 34.a4 Ra5 35.Qa1 Qa1 36.Ra1 Kf6 37.f3 e5 38.Kf2 Ke6 39.Ke3 f5 40.f4 h6 41.fe5 Ke5 42.h3 g5 43.Kd3 f4 44.gf4 Kf4 45.Kc4 h5 g4 46.Kb4 Ra8 47.a5 g4 48.hg4 hg4 49.Rf1 Kg3 50.Rf7 Kg2 51.Kb5 g3 52.Kb6?? Kg1?? 53.a6= Rb8 54.Rb7 Ra8 55.a7 Kf2 ½–½. Frank,Detlev – Schaefer,Hans, Pinneberg–ch op, 1996. (=1.a3 g6 2.b4 Bg7)

4.Nc3 c5 5.Nf3 (5.e3 Nf6=) 5...Nc6 (5...cd4 6.Nb5+=) 6.e3= e5 (better is 6...Nf6!?=) 7.dc5+/– e4 8.Nd4 Nge7 (8...Nf6!? 9.Nc6 dc6 10.Qd8 Kd8+/–) 9.Ne4+– 0–0 (9...bc5 10.bc5 (worse is 10.Nc5 Nd4 11.ed4 0–0+/–) 10...0–0 11.Bb2+–) 10.Bb2 Nf5 (10...bc5 11.Nc6 Nc6 12.Bg7 Kg7 13.b5+–) 11.Nc6 dc6 12.Qd8 Rd8 13.Nf6 Kf8 (13...Kh8 14.Bd3 bc5 15.bc5+–) 14.Nh7 Kg8 (14...Ke7 15.Bg7 Ng7 16.Ng5+–) 15.Nf6 Kh8 (15...Kf8 16.g4 Nh4 17.Be2+–) 16.Bd3 Rd3 (16...bc5 17.0–0–0 cb4 18.ab4 Rd6+–) 17.cd3 Be6 (17...bc5 18.bc5 Ne7 19.0–0–0+–) 18.h4 Rd8 (18...Nh6 19.h5 g5 20.Bc3+–) 19.h5 (better is 19.cb6 ab6 20.Ke2+–) 19...gh5 (19...g5+–) 20.g4 (better is 20.Rh5 Nh6 21.g4 bc5+–) 20...Bf6 (20...Nh6 21.g5 Rd3 22.Rh5 Bg4+–) 21.Bf6 Kg8 22.gf5 Bf5 23.Rh5 (23.Rh5 Bh7 24.Ke2 bc5 25.Rg1 Kf8 26.Rh7 Ke8 27.Bd8 a6 28.Rg8 Kd7 29.Rf7 Ke6 30.Rgg7 cb4 31.Rf6 Kd5 32.Rg5#) 1–0. pierre – ryzo, internet, 2010.

4.c4 c5 5.e3 cd4 6.ed4 e5 (6...d5 7.cd5 Nf6 8.Nc3=) 7.Bb2 (7.de5 Be5 8.Ra2 Ne7+=) 7...ed4 8.Bd4 Bd4 9.Qd4 Qf6 10.Qf6 Nf6 11.b5 (11.Nc3 Kd8+=) 11...a6 12.Nc3 ab5 13.cb5 (13.Nb5 Ke7=) 13...0–0 14.0–0–0 (better 14.Be2!?=) 14...Ra3–/+ 15.Kb2? (better 15.Nge2 Ra1 16.Kc2 Rd1 17.Kd1–/+) 15...Ra5?? (better 15...Rc3!? 16.Kc3 Ne4 17.Kc2 Nf2–+) 16.Nd5?? (better 16.Rd6 Ng4 17.Nh3+=) 16...Rb5?? (better 16...Nd5 17.Rd5 Bb7–/+) 17.Bb5+– Ng4 (17...Nd5 18.Rd5 Bb7 19.Rg5+–) 18.Rf1 (better 18.Nh3 Bb7 19.Rhe1+–) 18...Bb7 19.h3?? (better 19.Bc4 Ne5 20.Bb3+–) 19...Bd5+= 20.hg4 Bg2 21.Rh7?? (better 21.Nh3+=) 21...Bf1–+ (21...Kh7?! 22.Re1–+) 22.Bf1 Kh7 23.Bc4 Nc6 24.Bd5 (24.f4 Re8 25.Nf3 Kg7–+) 24...Ne5 25.f3 f5 (25...Nd3 26.Kc3 Nf4 27.Bb3–+) 26.g5 (26.gf5 Rf5 27.Be4 Rg5–+) 26...Rc8 27.f4 (27.Ne2–+) 27...Nd3 28.Kb3 Nf4 (28...Nf4 29.Bc4 Re8–+) 0–1. pat_cash87 – jeanauthnan, lichess.org, 2020.

4.e3 Bb7 5.Bb2 d6 6.Nf3 Nd7 7.Be2 Ngf6 8.0–0 0–0 9.c4 Ne4 10.Nc3 c5 11.Qc2 Nc3 12.Bc3 cd4 13.Bd4 Nf6 14.Rfd1 Rc8 15.Rac1 (15.a4 Qc7=) 15...Rc7 16.Qb3 Qa8 17.Ne1 Rfc8 18.f3 Nd7 19.Bg7 Kg7 20.e4 (20.Nd3 a5=) 20...Kg8 (20...Ne5 21.Rc2=) 21.Rc2 Nf8 22.Rdc1 Ne6 23.Qe3 Bc6 24.b5 Bb5?? (better is 24...Bb7=) 25.cb5+– Rc5 (25...Rc2 26.Rc2 Rc5 27.Rc5 dc5 28.Bc4+–) 26.Rc5 (better is 26.Bc4!? R5c7 27.Be6 Rc2 28.Bf7 Kf7 29.Nc2 a6+–) 26...bc5 (26...Rc5 27.Rc5 dc5 28.Bc4+–) 27.Nc2 Qb7 28.a4 Qb6 29.Qc3 c4 (29...Qb7 30.Bc4+–) 30.Kf1 Qc5 (30...Nf4 31.Ne3 e6 32.Qd2 Ne2 33.Ke2+– (worse is 33.Qe2 Qd4+–)) 31.Ne3 Qh5 32.Kg1 (32.Nd5!? Re8 33.Kg1 Qg5+–) 32...Nf4 33.Bf1 (33.Bc4?! Ne2 34.Be2 Rc3 35.Rc3 Qe5+–) 33...Rc5 (33...Qc5 34.Kf2+– (34.Bc4?! Ne2 35.Be2 Qc3 36.Rc3 Rc3+–)) 34.Nd5 (better is 34.Rc2 Nd3+–) 34...Nd5 35.ed5 Rd5 (35...Qd5 36.Qe3+– (36.Bc4?! Qg5+=)) 36.Qc4 (36.Qe3 Qe5 37.Qe5 de5 38.Rc4 Rd7+–) 36...Qg5 (36...Rc5 37.Qf4 Rc1 38.Qc1 Qe5+–) 37.Qe2 (better is 37.f4 Qf5 38.Qc8 Kg7 39.Qf5 Rf5 40.Rc7+–) 37...Qc1–+ 38.Qe7 (38.h3 e5–+) 38...Rd1 (better is 38...Qc5 39.Kh1 Rd1–+) 39.Qe2 Qc5 40.Kh1 (40.Qf2 Ra1–+) 40...Ra1 (better is 40...Qc2! 41.Qe8 Kg7–+) 41.g3 Ra4 42.b6 Rb4 43.ba7 Qa7 44.Qc2 (44.Kg2 Qd4 45.Qe7 Rb3–+) 44...Qd4 (44...Qa1 45.Kg1 Rb1 46.Qc4 Qa7 47.Kg2 Rb2 48.Be2–+) 45.Qc8 Kg7 46.Kg2 (46.Qc1–+) 46...Rb2 47.Kh3 h5 48.Bc4 Qd2 49.Kh4 Qh2 50.Kg5 Qg3 0–1. Panic,Sasa – Ilic,SloS2 (1955), ch–Central Serbia, 2015. (=1.a3 g6 2.b4 Bg7 3.d4 b6)

4.Nf3 c5=.

3.d4 d5

4.Bb2 b5 5.Nf3 Nf6 6.e3 c6 7.Bd3 0–0 8.0–0 a5 9.c3 Bg4 10.Nbd2 Qc7 11.h3 Bd7 12.Ne5 Qc8 13.Qf3 Be6 14.e4 Nbd7 15.Nd7 Qd7 16.e5 Ne8 17.Nb3 a4 18.Nc5 Qc8 19.Qf4 Nc7 20.Qh4 Qe8 21.Bc2 f6 22.f4 f5 23.Rf2 Bf7 24.Re1 e6 25.g4 Qd8 26.Qg3 Re8 27.Rg2 Re7 28.gf5+– ef5 29.Bf5 Kf8 30.e6 Qe8 31.Nd7 Kg8 32.ef7 Qf7 33.Re7 Qe7 34.Bg4 Re8? 35.Ne5 Bh6 36.Bd7 Rf8 37.Bc1 Ne8 38.Bc6 Nf6 39.Qh4 Kg7 40.Bb5 Qe6 1–0. Frank,Detlev – Tornier,Siegfried, Pinneberg–ch op, 1998. (=1.a3 g6 2.b4 Bg7 3.d4 d5)

4.Bb2 Nd7 5.Nf3 c5 6.e3 cd4 7.Nd4 Ngf6 8.Nc3 0–0 9.Bd3 a5 10.–0 Ne5 11.Qd2 Nd3 12.cd3 Bd7 13.f4 ab4 14.ab4 Qb6 15.Nce2 Bg4 16.Ng3 Bd7 17.Kh1 e6 18.Nf3 Ng4 19.Bd4 Bd4 20.Nd4 Rfc8 21.h3 Nf6 22.Qb2 Ra1 23.Ra1 Ne8 24.e4 de4 25.Ne4 Qc7 26.Rf1 Bc6 27.Ng3 Bd5 28.Nge2 Qd6 29.h4 Ng7 30.Nf3 Nf5 31.h5 gh5 32.Qf6 Qe7 33.Qb2 Ne3 34.Rc1 Ra8 35.Qe5 Nf5 36.Ned4 Nd4 37.Nd4 Qh4 38.Kg1 Qg3 39.Qg5 Qg5 40.fg5 Kg7 41.g3 Ra2 42.Rc5 Kg6 43.Nc2 Rb2 44.Ne3 Bc6 45.Nc2 Rb3 46.Nd4 Rd3 47.Nc6 bc6 48.Rc6 Rg3 49.Kf2 Rb3 50.Rb6 Kg5 51.Rb8 Kf4 52.b5 Rb2 53.Kg1 e5 54.b6 f5 55.b7 e4 56.Kf1 Kf3 57.Ke1 e3 58.Kd1 e2 (58...e2 59.Kc1 e1Q 60.Kb2 Qe5 61.Kc2 Qb8–+) 0–1. Frank,Detlev (1840) – Doerge,Olaf (1985), Pinneberg–ch, 2006. (=1.a3 g6 2.b4 Bg7 3.d4 d5)

4.Bb2 Bf5 5.Nf3 Nd7 6.e3 Ngf6 7.c4 c6 8.Nbd2 0–0 9.Be2 Re8 10.–0 e6 11.Ne5 h5 12.h3 Ne5 13.de5 Nd7 14.g4 hg4 15.hg4 Be5 16.Be5 Ne5 17.f4 (17.gf5? Qg5 18.Bg4 Ng4–+ (18...Qg4?! 19.Qg4 Ng4 20.fg6–/+)) 17...Qh4 18.gf5 (18.fe5 Qg3 19.Kh1 Kg7 20.gf5 Rh8 21.Bh5 ef5+=) 18...Qg3 19.Kh1 Kg7 20.f6 Kf6 21.fe5 Ke7 22.Rf7 Kf7 23.Qf1 Ke7 24.Qf6 Kd7 25.Qf7 (25.Bh5 Qh3 26.Kg1 Qe3 27.Kh1 Qh3 28.Kg1 gh5 29.Qg7 Re7 30.Qg5–+) 25...Re7 26.Qf6 Rh7 (26...Rh7 27.Bh5 Rh5 28.Qh4 Rh4) 0–1. Frank,Detlev (1810) – Freitag,Roland (2265), Pinneberg–ch, 2007. (=1.a3 g6 2.b4 Bg7 3.d4 d5)

4.Bb2 Nf6 5.e3 0–0 6.c4 c6 7.Nf3 Nbd7 8.Nbd2 Ng4 9.h3 Nh6 10.Be2 Qc7 11.Rc1 Qb8 12.0–0 e5 13.e4 (better is 13.cd5!? cd5 14.de5 Ne5 15.Be5 Be5 16.Ne5 Qe5 17.Qb3+/–) 13...de4+= 14.Ne4 ed4 15.Bd4 Bd4 16.Qd4 Nf5 17.Qc3 Re8 18.Bd3 Qf4 19.Rfe1 Nd6 (better is 19...b6!?+/–) 20.Nd6 Re1 21.Re1 (21.Ne1?! Qd6 22.Nf3 Qf6+=; 21.Qe1?! Qd6 22.Rd1 Qf4+/–) 21...Qd6 22.Re8 Nf8 23.c5 (23.Ng5 Bf5 24.Ra8 Qd3+–) 23...Qf4 (23...Qd7 24.Qe5 b5+– (24...Qd3 25.Qe7 Qd1 26.Kh2 Qh1 27.Kh1 Kg7 28.Qf8 Kf6 29.Qh8 Kf5 30.Qe5)) 24.Ne5 b5 (24...a5 25.Bc4 ab4 26.ab4+–) 25.cb6 (better is 25.Nc6 f6 26.g3 Qg5+–) 25...Bb7 26.Re7 Bc8 (26...c5 27.bc5 Ne6 28.Rb7 ab6 29.cb6 Ra3 30.Qa3 Qe5+–) 27.b7 Bb7 28.Rb7 Re8 29.Nf7 Qf7 30.Rf7 Kf7 31.Bc4 Ne6 32.Qf3 Ke7 33.Qc6 Kf7 34.Qd7 (34.Qd7 Re7 35.Qd5+–) 1–0. Frank,Detlev – Lubisch,Gerwalt, Pinneberg–ch op, 1996. (=1.a3 g6 2.b4 Bg7 3.d4 d5)

4.Bb2 Nf6 5.e3 0–0 6.Nd2 Nbd7 7.Ngf3 b6 8.Be2 c5 9.c4 Bb7 10.0–0 e6 11.dc5 bc5 12.b5 Qe7 13.Ne5 Ne5 14.Be5 Rfd8 15.Ra2 dc4 16.Qa1 Ne8 17.Nf3 (17.Bc4? Qg5 18.Ne4 Be4–+ (18...Be5?! 19.Ng5 Ba1 20.Rfa1+=; 18...Qe5?! 19.Qe5 Be5 20.Nc5–+)) 17...Bd5 18.Bg7 Ng7 19.Rc2 Qb7 20.Qb2 Rab8 21.Rb1 Be4 22.Ne1 Bc2 23.Qc2 a6 24.Bc4 ab5 25.a4? (better is 25.Rb5!? Qa7 26.a4–/+) 25...b4–+ 26.Bb5 Qd5 27.Rb3 Qd1 28.Qd1 Rd1 29.Kf1 Nf5 30.Ke2 Ra1 31.Rd3 Rc8 32.Nf3 c4 33.Rd7 c3 34.Rd1 Rd1 35.Kd1 c2 36.Kc1 b3 (36...b3 37.e4 b2 38.Kd2 b1Q 39.ef5 c1Q 40.Ke2 Qe4) 0–1. Puru,B – Yap,Andronico, Asia–chT sf, 1979. (=1.a3 g6 2.b4 Bg7)

4.Bb2 Nf6 5.Nf3 0–0 6.e3 Bg4 7.Nbd2 Nbd7 8.c4 c6 9.h3 Bf3 10.Nf3 a6 11.Bd3 Re8 12.0–0 b5 13.c5 Qc7 14.Qc2 Nh5 15.Rae1 e5 16.de5 Ne5 17.Be5 Be5 18.Ne5 Qe5 19.f4 Qg7 20.Kh2 Nf6 21.g4 (better is 21.e4!?+=) 21...Ne4+= 22.g5 a5 23.h4 ab4 24.ab4 Ra4 25.Rb1 Rea8 26.Rb2 Qb2 27.Qb2 Ra2 28.Qa2 Ra2 29.Kg1 Nc3 30.f5 gf5 31.Bf5 Ne2 (31...Rb2 32.Bd7–/+) 32.Kf2 Nd4 33.Kg3 Ra3 34.Bh7? Kh7–+ 35.Rf7 Kg6?? 36.Rf6= Kg7 37.Kf4 Ne2 38.Kf3 Nd4 39.Kf2 Nc2 40.Rc6 Nb4 41.Rb6 Nd3 42.Ke2 Nc5 43.Rb5 Ra2 44.Kf3+= Rc2 45.h5 Rc4 46.Ra5 Rc3 47.Ra7 Kg8 48.Ra8 Kg7 49.Rd8 Ne6? 50.Rd7+– Kf8 51.Rd5 Rc4 52.e4 Rc3 53.Kg4 Re3 54.Re5 Nd4 55.g6 Re1 56.Kf4 Nc6 57.Rc5 Rf1 58.Kg5 Nd4 59.Rc8 Ke7 60.g7 Rg1?? 61.Kh6 Kf7 62.Rf8 Ke7 63.g8Q (63.g8Q Rg8 64.Rg8+–) 1–0. Frank,Detlev (1835) – Olschok,Juergen (1720), Pinneberg–ch, 2005. (=1.a3 g6 2.b4 Bg7 3.d4 d5)

4.Nc3 Nf6 5.h3 0–0 6.Qd3 (6.Bf4 Bf5=+) 6...Nc6 7.Nf3 Bf5 8.Qd2 (better is 8.Qb5 Rb8 9.Ra2=+) 8...Na5?? (better is 8...Ne4 9.Qe3 e5 10.Ne4 Be4 11.Ne5 Ne5 12.de5 Be5–/+) 9.ba5+– a6 10.Qf4 (10.Rb1!? Rb8+–) 10...Bc2 11.Ra2 Bf5 12.g4 Ne4 (12...Be4 13.Rb2 c5 14.Rb7 Qa5 15.Qd2 Bf3 16.ef3 cd4 A) 17.Qd4 Ne4 18.Qd3 Bc3 (18...Qc3?! 19.Qc3 Nc3 20.Re7=+) 19.Ke2 Nc5 20.Qd5 Rfd8–+; B) 17.Ne2 Qd2 18.Kd2 Bh6 19.f4 Ne4 20.Ke1+–) 13.Nd5 (better is 13.gf5 Nc3 14.Rc2+–) 13...b6?? (better is 13...Qd5 14.gf5 Nf2 15.Kf2 Qa2 16.Qc7 Rac8+=) 14.gf5 Qd5 15.Rc2 Qa5 16.Bd2 Nd2 17.Qd2 Qa3 18.fg6 fg6 19.Rc7 Qa1 20.Qc1 Qa5 21.Qc3 Qc3 22.Rc3 a5 23.Bg2 Rad8 24.Rd3 b5 25.e3 b4 26.0–0 Rb8 27.Ra1+– b3 28.Ra5 b2 29.Nd2 b1Q 30.Nb1 Rb1 31.Kh2 Rf2 32.Kg3 Re2 33.Bd5+– Kh8?? 34.Ra8 Bf8 35.Rf8 Kg7 36.Rf2 Ree1 37.Bg2 h5 38.e4 e6 39.Rfd2 Kh6 40.d5 ed5 41.ed5 Re5 42.d6 Rb8 43.d7 Rd8 44.Rd6 Kg7 45.R2d4 g5 46.R4d5 Rd5 47.Bd5 Kf8 48.Bc6 Ke7 49.Rd5 Ke6 50.Rg5 (50...Rd7 51.Bd7 Kd7 52.Kh4+–) 1–0. Kunk – nandy conure, ChessWorld.net, 2005.

4.e3 Nf6 5.c4 dc4 (5...0–0 6.Nf3=) 6.Bc4 e6 7.b5 Nbd7 (7...a6 8.Nf3=) 8.a4 (8.Nf3 0–0+=) 8...b6 9.Bb2 Qe7 (9...Bb7 10.Nf3=) 10.Nd2 Qb4 (10...Bb7 11.Ngf3+=) 11.Qc2 (better 11.Ba3 Qa5 12.Ngf3+–) 11...Ng4?? (better 11...Bb7 12.Ngf3 Bf3 13.gf3 a6+=) 12.0–0–0 (better 12.Ba3 Qa5 13.Qe4+–) 12...Bb7?? (12...Nf2 13.Ngf3–+) 13.Ne4? (better 13.Bc3!? Qe7 14.Ndf3=+) 13...f5 (better 13...Be4 14.Qe4 Qc4 15.Kd2 Rc8 16.Qg4 Qa2–+ (16...Qa4?! 17.Qe2–+)) 14.d5?? (better 14.Ng5 Bg2 15.N1h3–/+) 14...fe4 (better 14...Bb2 15.Qb2 Qc4 16.Qc3 ed5–+) 15.Bg7=+ Rg8 16.de6 Nb8 (better 16...Nc5 17.Bd4 Nf2 18.Bc5 Qc5 19.Qf2 Qc4 20.Qc2 Qe6–/+) 17.Rd8?? (17.Qc3 a5 18.Rd2 Qa4 19.Bh8+–) 17...Kd8–+ 18.Qd1?? (better 18.Bc3 Qa3 19.Bb2–+) 18...Ke7 19.Qg4 (19.Qd4 Qe1 20.Kc2 Qf2 21.Ne2 a6–+) 19...Qc4 20.Kd2 Rg7 21.Qh4 (21.Qd1 Na6! 22.Ke1 Rd8 23.Qd8 Kd8–+) 21...Ke6 22.Qg4 Ke7 (22...Kf7 23.Nh3 Qd3 24.Kc1 Qc3 25.Kb1 Qb3 26.Kc1–+) 23.Qg5 Kd6 (better 23...Kf7 24.h4 Qb4 25.Ke2 a6–+) 24.Qf6 Kc5 (24...Kc5 25.Qf8 Kd5 26.Qg7 Qb4 27.Ke2 Qa4–+; 24...Qe6 25.Qg7 Qa2 26.Ke1–+) 0–1. pat_cash87 – Gonzeux, lichess.org, 2020.

4.Nf3 Nf6=.

3.d4 d6

4.Bb2 c5 5.e3 Nc6 6.b5 Nb8 7.Nf3 Bg4 (7...cd4 8.ed4 Bf5 9.Bd3=) 8.Be2 Nf6 (8...cd4 9.0–0+=) 9.h3 (9.dc5 dc5 10.Qd8 Kd8+=) 9...Be6 (better 9...Bd7!?=) 10.dc5+– dc5 11.0–0 (better 11.Qd8!? Kd8 12.Ng5+–) 11...0–0= 12.c4 Ne4 (12...Qb6!?=) 13.Bg7+– Kg7 14.Qc2 Bf5? (14...Nd6 15.Rd1+=) 15.Nh4?? (better 15.g4+–) 15...Nd6+– 16.Nf5 Nf5 17.Bd3 Nd6 18.Nc3 f5 19.Nd5 e5 20.Rfd1 e4 (20...Nd7!?+=) 21.Be2+– Qe8?? (21...Nd7 22.Rd2+–) 22.Nf4 (better 22.Qc3 Kg8 23.Nc7+–) 22...Qe5+– 23.Rac1 b6 24.Qc3 (better 24.Rd5 Qf6 25.Rcd1+–) 24...Nd7?? (better 24...Qc3 25.Rc3 Rf6+–) 25.Rd6+– Qc3 26.Rd7 Rf7 27.Rc3 (better 27.Rf7 Kf7 28.Rc3+–) 27...Rd7 28.Ne6 (better 28.Nd5+–) 28...Kf6= 29.Nf4 Rd2 (29...Kg7 30.Nd5 h5+–) 30.Kf1 Rad8 31.Nd5 Ke5 32.f4 (32.f4 Ke6 33.g4+–) 1–0. alddhsfd (1870) – epotignano (1855), lichess.org, 2019. (=1.a3 g6 2.b4 Bg7 3.d4 d6)

4.Bb2 c5 5.e3 Bf5 6.Nf3 cd4 7.ed4 (7.Nd4 Qc8 8.Nc3+= (worse is 8.Nf5 Bb2 9.Bb5 Nd7 10.Nd6 ed6–+)) 7...Nf6= 8.Bd3 Bd3 9.Qd3 0–0 10.Nbd2 Nbd7 11.c4 e5 12.0–0 Re8 13.Rfe1 Qb6 14.c5 Qc6 15.Qb3 (15.de5 de5 16.Be5 Ne5 17.Re5 Nd5 18.Re8 Re8+/–) 15...dc5 16.dc5 (16.bc5?! ed4 17.Bd4 Nc5 18.Bc5 Qc5 19.Qb7 Rad8=) 16...Nd5? (16...Nh5 17.Nc4+/–) 17.Ne4 (better is 17.b5!? Qe6 18.Ng5 Nc5 19.Ne6 Nb3 20.Ng7 Na1 21.Ne8 Re8 22.Ra1+–) 17...Nf4+/– 18.Rad1 Rad8 19.g3 Ne6 20.Nd6 Rf8 21.Ne5 Ne5 22.Be5 (22.Re5?! Be5 23.Be5 b6 24.cb6 ab6= (worse is 24...Qb6 25.Ne4 Rd1 26.Qd1+=)) 22...Ng5 23.Bg7 Nh3? 24.Kf1+– Kg7 25.f3 Ng5 26.Kg2 Rd7? 27.Qd5 Qd5 28.Rd5 Rd6 29.cd6 Ne6 30.Rc1 Kf6 31.d7 a6 32.Rc8 Nd8 33.Kf2 Ke6 34.Rd3 f5 35.f4 Ke7 36.Rc5 Nc6 37.b5 ab5 38.Rb5 Rb8 39.Ke3 Kd8 40.h4 Kc7 41.h5! Ra8 42.hg6 hg6 43.Re5! Nd8 44.Re7 Ra4 45.Rg7 Re4 46.Kf3 Re6 47.Kg2 Rc6 48.Kh3 b5 49.Kh4 Ra6 50.Re7 Rb6 51.Kg5 b4 52.ab4 Rb4 53.Kg6 Rb5 54.Re5 (54.Re5 Rb6 55.Kf5+–) 1–0. Ufimtsev,V2 (2065) – Panov,I (2195), XII Izmailov Mem, Tomsk RUS, 2008. (=1.a3 g6 2.b4 Bg7)

4.Bb2 c5 5.e3 Nh6 6.Qd2 0–0 7.c4 cd4 8.Bd4 Bd4 9.ed4 Nf5 10.Nf3 Nc6 11.Be2 e5 12.d5 Ncd4 13.Qd1 Ne2 14.Qe2 e4 15.Nfd2 (15.Qe4 Re8 Pinning (15...Re8 Decoy)) 15...Nd4 16.Qd1 (16.Qe4?? Re8 17.0–0 Re4 18.Ne4 Bf5–+) 16...Qg5 17.Ne4 (17.Kf1 e3 18.fe3 Qe3 19.Ra2 Qf4 20.Nf3 Nf3 21.gf3 Bh3 22.Rg2 Qc4 23.Kf2 Bg2 24.Kg2–+) 17...Re8–+ (17...Qg2?! 18.Nf6 Kh8 19.Qd4 Qh1 20.Ke2+=) 18.Qd4 Bf5?? (better is 18...Qg2 19.Nbd2 Qh1 20.Ke2 Qh2–+) 19.Nbc3 (better is 19.0–0!? Re4 20.Qc3+=) 19...Be4+= 20.Ne4 Qg2–/+ 21.Kd2? Re4–+ 22.Qf6 Rc4 (22...Rc4 23.Qf5 gf5–+) 0–1. Krois,Andreas – Hofelich,Michael, GER–chT univ, 1987. (=1.a3 g6 2.b4 Bg7)

4.e4 Nf6 5.Bd3 0–0 6.Nf3 Nc6 7.b5 Nb8 8.0–0 c5 9.c3 Bg4 10.h3 Bf3 11.Qf3 (< 11.gf3 d5=+) 11...Nbd7 12.Be3 e5 (12...Rc8!?+=) 13.d5+/– a5 14.Re1 b6 15.Nd2 Nh5 (15...Nd5 16.ed5 f5 17.Bc4+=) 16.Rac1 Qe8 17.Nc4 (White launches an attack) 17...Qb8 18.a4 Qc7 19.Bg5 h6? (better is 19...Bf6!? 20.Bd2 Bg7+/–) 20.Be7+– Rfe8 21.Bd6 Qd8 22.Rcd1 Nf4 23.Qg3 Qg5? (23...Qf6+–) 24.Qg5 hg5 25.Bc7 (25...Ra7 26.Bb6 Nb6 27.Nb6+–) 1–0. marekt (2210) – Prabu77 (2145), ICC, 2003.

3.d4 Nf6

4.Bb2 0–0 5.Nf3 d5 6.e3 Bg4 7.h3 Bf3 8.Qf3 c6 9.Nd2 Nbd7 10.c4 dc4 11.Bc4 Qc7 12.0–0 e5 13.Rac1 Rad8 14.Qe2 Qb8 15.f3 (15.Rfd1 Rfe8+=) 15...Nh5 16.Qf2 ed4 17.ed4 Nb6 18.f4 Nd5 (18...Qd6 19.Ne4 Qd4 20.Bd4 Bd4 21.Nc5 Bf2 22.Rf2 Nc4 23.Rc4–/+) 19.g3= Rfe8 20.Rfe1 Nhf6 21.Bd3 Re1 22.Re1 Re8 23.Nf3 Re1 24.Qe1 Qe8 25.Ne5 Nd7 26.Qe2 a6 27.Qg4 Nf8 28.Qe2 Ne6 29.f5 Nf8 30.Kf2 f6 31.Nc4+= Qd7 32.Qg4 Qe7 33.Bc1 Kh8 34.fg6+/– Ng6 35.Bg6 hg6 36.Qg6 Qe6 37.Qh5 Kg8 38.Qg4 f5= 39.Qg5 Nc3 40.Qd8 Kh7 41.Ne3?? Qa2–+ 42.Kf3?? Qe2 43.Kf4 Qf2 44.Kg5 Ne4 45.Kh5 Ng3 46.Kg5 Ne4 47.Kh5 Qf3 48.Ng4 Qh3 (48...Qh3 49.Qh4 Qf3–+) 0–1. Frank,Detlev – Koch,Soeren, Pinneberg–ch op, 1999. (=1.a3 g6 2.b4 Bg7)

4.Bb2 d5 5.e3 0–0 6.c4 c6 7.Nd2 Nbd7 8.Ngf3 Re8 9.Qb3 (9.Bd3 dc4 10.Nc4 Nb6+=) 9...Nb6 (9...a6 10.Bd3+=) 10.Qc2 (10.c5 Nbd7+=) 10...Bf5= 11.Bd3 Bd3 12.Qd3 Na4 13.Qc2 (13.Rb1 dc4 14.Nc4 c5=) 13...Nb2 (13...b5 14.cd5 cd5 15.0–0=) 14.Qb2 Nd7 15.cd5 cd5 16.Qb3 e6 (16...Nb6 17.Rc1=) 17.0–0 Rc8 18.Rac1 Qe7 19.Rc2 Rc2 20.Qc2 Nb6 21.Rc1 (21.Qc5 Qd7=) 21...Rc8 22.Qb1 Nc4 23.a4 (23.Nc4 dc4 24.a4 e5=) 23...Bf8 (23...a6 24.Nc4 dc4 25.b5=) 24.Nc4 Rc4 25.Rc4 dc4 26.Ne5 c3 27.Nd3 Qc7 28.Qc2 b6 (28...Bd6 29.f4=) 29.g3 (29.b5 Bd6 30.h3 Bh2 31.Kf1 Bd6=) 29...a6 30.b5 ab5 31.ab5 Bd6 32.Nc1 (32.f3 Qc4=+) 32...Qc4=+ 33.Nb3 (33.f4 Bb4–/+) 33...Bb4–/+ (33...Qb5?! 34.Qc3 Qd5 35.Qc8 Kg7 36.Qc2=) 34.f3 (34.Nc1 Ba5–/+) 34...Qb5 35.Kf2 Qc4 (35...e5 36.Nc1–/+) 36.Nc1 (36.e4 f5–+) 36...Ba3 37.Nb3 b5 38.Kg2 h5 (38...b4 39.Kg1–+) 39.h3 (39.Kg1 b4–+) 39...Bb2 (39...h4 40.g4–+) 40.Nc5 (better 40.h4–+) 40...Ba3 (40...e5 41.Nb3–+) 41.Nb3 Be7 (41...b4 42.e4–+) 42.Kf2 (42.Nc1 b4–+) 42...h4 43.g4 Bb4 (43...Qc7 44.f4–+) 44.Nc1 (44.e4 f5!–+) 44...Qc7 (44...Bd6 45.f4–+) 45.f4 g5! 46.Kf3 (46.fg5 Qh2 Double attack) 46...gf4 47.ef4 (47.e4 Qa7 48.Qf2 Be7–+) 47...Bd6 (47...Qc6!? 48.Qe4 Qe4 49.Ke4–+) 48.f5 Bg3 (better 48...Qc4 49.Ne2 Qd5 50.Qe4 b4 51.Qd5 ed5–+) 49.fe6? (better 49.Ne2 b4 50.fe6 Qc6 51.Qe4 Qe6 52.Qe6 fe6 53.Ke3–+) 49...Qf4 50.Kg2 fe6 (50...Qd2!? 51.Qd2 cd2 52.e7 dc1Q 53.e8Q Kg7 54.Qb5 Qd2 55.Kf3 Qf4 56.Ke2 Qf2 57.Kd1 Qd4 58.Kc2 Qe4 59.Qd3 Qg2 60.Qd2 Qd2 61.Kd2–+) 51.Nb3 Be1 (better 51...b4–+) 52.Qg6?? (better 52.Qe2 Qd6 53.Qe1 Qd5 54.Kf2 Qb3 55.Qe3 Qc2 56.Ke1–/+) 52...Kf8 53.Qc2 Bd2 (better 53...Qg3 54.Kf1 Qf3 55.Kg1 Qe3 56.Kf1 Bd2 57.Nd2 Qh3 (worse 57...Qd2 58.Qd2 cd2 59.Ke2=) 58.Kf2 Qg3 (58...cd2?! 59.Qc8 Kg7 60.Qd7 Kf6 61.Qd8 Kf7 62.Qd7 Kg6 63.Qe6 Kg7 64.Qe7 Kh8 65.Qe5 Kh7 66.Qe7 Kh6 67.Qf6 Kh7 68.Qe7 Kg8 69.Qe8 Kg7 70.Qe7 Kg6 71.Qe6 Kg5 72.Qf5 Kh6 73.Qe6 Kg5 74.Qf5 Kh6 75.Qe6 Kg5=) 59.Kf1 Qf4 (59...cd2 60.Qc5 Kg8 61.Qc8 Kg7 62.Qd7 Kf8 63.Qd8 Kf7 64.Qd7 Kf6 65.Qd8 Kg6 66.Qg8 Kh6 67.Qe6 Kg7 68.Qe7 Kg6 69.Qe6 Kh7 70.Qe7 Kh8 71.Qe8 Kg7 72.Qe7 Kg8 73.Qe8 Kg7 74.Qe7=) 60.Ke1 Qe3 61.Kd1 Qd4–+) 54.g5 (54.Qd3–+) 54...Qg3 55.Kf1 (55.Kh1 Qf3 56.Kh2 Qf2 57.Kh1 Qf1 58.Kh2 Bf4) 55...Qh3 (55...Qf3 56.Kg1 Be3 57.Kh2 Qg3 58.Kh1 Qg1) 56.Ke2 (56.Kg1 Qg3 57.Kh1 Qf3 58.Kh2 Qf2 59.Kh1 Qf1 60.Kh2 Bf4) 56...Qe3 (56...Qg2 57.Kd3 Qf3) 57.Kf1 Qf3 (57...Qf3 58.Kg1 Be3 59.Kh2 Qg3 60.Kh1 Qg1) 0–1. Basto,Suely (1910) – Prado,Alexandra (1830), Final del Championship Nacional Femenin, 2016. (=1.a3 g6 2.b4 Bg7 3.d4 Nf6)

4.e3 0–0 5.Nf3 d6 6.Be2 Bg4 7.0–0 Nc6 8.c4 a6 9.Nc3 Rb8 10.e4 e5 11.d5 Bf3 12.Bf3 (< 12.gf3 Nd4=) 12...Nd4 13.Be3 Nf3 (13...Nd7 14.Rc1+=) 14.Qf3+/– Qd7 15.h3 h5 (15...Ne8!?+=) 16.Rfd1 Qe7 17.Rab1 Kh7 18.c5 Bh6 19.cd6 cd6 20.Bh6 Kh6 21.Rbc1 Rbc8 22.Rc2 (22.Ne2 Kg7+/–) 22...Rc7 (22...Rc4 23.Rdc1+=) 23.Rdc1+/– Rfc8 24.Qd3 Kg7 25.a4 Rh8 26.b5 Ng4?? (better is 26...Rhc8+/–) 27.b6 Rc5 28.hg4 hg4 29.Qg3 Qg5 30.Rd1 Rh4 31.Kf1 Rc8 32.Ke2 Rch8 (32...f5 33.a5+–) 33.Rdc1 Rh1 (33...Qf6 34.Na2+–) 34.Rh1 Rh1 35.a5 (35.Nd1!? Qh5+–) 35...Rc1 (35...Ra1 36.Na2+–) 36.Rc1 (better is 36.Kd3!? Ra1 37.Na2 f5+–) 36...Qc1 37.Qd3 Qb2 38.Qd2 Qb4 39.Qe3 Qa5 40.Kd3 Qb6?? (better is 40...Qa1 41.Kc2 Qf1+–) 1–0. marekt (2210) – johnsheek, ICC, 2003.

4.e3 d5 5.Bb2 Bg4 6.Nf3 Bf3 (6...Nbd7 7.Bd3=) 7.gf3 (7.Qf3 a5+=) 7...e6 8.Nd2 Nbd7 9.c4 0–0 10.cd5 (10.Qc2 a5=) 10...ed5 (10...Nd5 11.Rc1=) 11.Rc1 (11.Rg1 Re8=) 11...c6 (11...Re8 12.Qc2 c6 13.Kd1=) 12.h4 (12.b5 Rc8=) 12...h5 (12...Qb6 13.Qb3=) 13.Bd3 Re8 (13...a5 14.b5 Qb6 15.a4=) 14.Qc2 (14.f4 Ne4=) 14...a6 (14...a5 15.b5 Rc8 16.bc6 bc6 17.Nb3=) 15.Nb3 (15.f4=) 15...a5 (15...Ra7=) 16.Kd2 (16.Na5!? Qb6 17.f4+–) 16...a4 (16...ab4!? 17.ab4 Qb6=+) 17.Nc5= b6? (better 17...Nc5 18.bc5 Nd7=) 18.Nd7+– Qd7 (18...Nd7 19.Qc6 Nf8 20.Bb5+–) 19.Qc6 Rac8 (19...Qd8+–) 20.Qd7 Nd7 21.Rc8 (21.Bb5 Rc1 22.Rc1 Rd8+–) 21...Rc8 22.Rc1 (better 22.Bb5!? Nf6 23.Ba4+–) 22...Rc1+– 23.Kc1 (23.Bc1 Kf8+–) 23...Nb8 24.Bb5 Kf8 (24...Bf6 25.Ba4 Na6 26.Bc6+–) 25.Ba4+– Ke7 (25...Na6 26.Bc6 Nc7 27.a4+–) 26.Bb5 (26.Bb3 Bf6 27.Kd2 Bh4+–) 26...Kd6 (26...Bf6 27.Kd2+–) 27.a4 (better 27.e4+–) 27...Kc7? (better 27...Bf6!?+–) 28.e4 (28.Be8 Nc6 29.Bf7 Ne7+–) 28...de4 (28...Nd7 29.a5 ba5 30.ba5+–) 29.fe4 Nd7 (29...Bf6 30.Be8+–) 30.Bd7 (better 30.Bc4!? f5 31.e5 Bf8+–) 30...Kd7 31.e5 (31.a5 ba5 32.ba5 Bf6+–) 31...Kc6 (31...Bf8 32.d5+–) 32.Kc2 b5? (32...Bf8 33.Kc3+–) 33.a5 (better 33.ab5 Kb5 34.d5 Bf8+–) 33...Kb7?? (better 33...Bf8 34.Bc3 Be7+–) 34.Kd3 (better 34.d5 Bf8 35.d6 g5 36.hg5 h4 37.a6 Ka6+–) 34...Ka6 (34...Bf8 35.Bc3 Be7+–) 35.d5 Bf8 36.Bd4 (36.d6 Kb7 37.Bd4+–) 36...Bb4 37.d6 (better 37.Bb6!? Be7 38.d6 Bh4 39.f4+–) 37...Ba5+– 38.Ke4 (better 38.e6!? fe6 39.Bf6+–) 38...Bd8= 39.Kd5 b4 (39...Bh4 40.Kc6 Bd8+=) 40.f4 (40.Kc4+=) 40...Ka5?? (40...Kb5 41.e6 fe6 42.Ke6–/+) 41.Kc4?? (better 41.e6 fe6 42.Ke6+–) 41...Ka4=+ 42.Bb2 (42.Kd5!? Kb5 43.e6 fe6 44.Ke6=+) 42...b3 (42...Bh4 43.Kd5 Bd8 44.Ke4–+) 43.d7 (better 43.Kd5 Bh4 44.Kc6–/+) 43...Ba5?? (better 43...Bh4 44.Bd4 Bd8–+) 44.Kd5= Bd8 45.e6 Kb4?? (better 45...fe6 46.Ke6 Bh4+=) 46.ef7 Be7 47.f8Q! Bf8 (47...Bf8 48.d8Q Mate attack) 48.d8Q Be7 (48...Bc5 49.Qb8 Bb6 50.Qb6 Ka4 51.Kc4 g5 52.Qb5) 49.Qb8 Ka4 50.Qb7 (50.Kc4 Bh4 51.Qb5) 50...Ka5 (50...Bd8 51.Qa6 Kb4 52.Kc6 Bh4 53.Qb5) 51.Kc4 Ka4 (51...Bh4 52.Qb5) 52.Qb5 1–0. TwelveTeen (2670) – helmsknight (2100), lichess.org, 2017. (=1.a3 g6 2.b4 Bg7 3.d4 Nf6)

4.e3 d6 5.Nf3 0–0 6.Bb2 b6 7.c4 Nbd7 8.Be2 Bb7 9.0–0 Ne4 10.Nfd2 Nd2 11.Nd2 c5 12.Bf3 Qc7 13.Rb1 Bf3 14.Qf3 (worse is 14.Nf3 cb4 15.ab4 Qc4+=) 14...a5 15.b5 cd4 16.Bd4 Rac8 17.h4 Ne5 18.Be5 Be5 19.e4 Qd7 20.Qe3 Qc7 21.Rb3 Qc5 22.Qf3 Bg7 23.Rd3 Bh6 24.Rd5 Qc7 25.Rc1 Qb7 26.Rc2 Bd2 27.Rdd2 Rc5 28.Rd5 Rfc8 29.Rc5 Rc5 30.Qd3 Qc8 31.f3 Rh5 32.g3 Qh3 33.Rg2 Rc5 34.Qb3 Qe6 35.Rc2 Qe5 36.Kg2 h5 37.Qd3 Qe6 38.Kh2 g5 39.hg5 Rg5 40.Qe3 Qf6 41.f4 Rg4 42.Qg1 Qg6 43.Qb6= Qe4 44.Qc6?? Qf5 45.Qd5?? Qd5 46.cd5+– Kg7 47.b6 Kf6 48.Rb2 Rg8+/– 49.b7 Rb8 50.Kh3 Kf5 51.Kh4 e5 52.fe5 Ke5 53.Rb5 Kf5 54.a4 f6 ½–½. Ufimtsev,Vladimir (2165) – Kovalev,Alexander (2135), Novokuznetsk Goriainov Memorial op, 2007. (=1.a3 g6 2.b4 Bg7 3.d4 Nf6)

4.Nf3 0–0 5.Bb2 d5 6.e3 a5 7.c3 Bg4 8.Nbd2 Nbd7 9.Bd3 e5 10.de5 Ne5 11.Be2 Nf3 12.Nf3 Ne4 13.Qc2 Qf6 14.0–0 ab4 15.ab4 Nc3 16.Kh1 c6 17.Rfc1 d4! 18.Bc3 (18.ed4 Ne2 Combination; 18.Nd4 Qf2 Pinning (18...Qf2 Deflection)) 18...dc3 19.Kg1 Qd6 20.Rab1 Qd5 21.Ra1? (better is 21.e4 Qa2 22.Kf1–+) 21...Bf5 22.Ra8 Bc2 23.Rf8 Kf8 24.Rc2 Qb3 25.Ne1 Qb4 26.Kf1 b5 27.Bd3 (27.Ra2 Qb3 28.Ra8 Ke7 29.Ra7 Kd6–+) 27...Qa4 28.Rc1 b4 29.Ke2 b3 30.Nc2 c5 31.Ra1 Qg4 32.Kf1 Qd7 33.Rd1 Qd3! 34.Rd3 bc2 (34...bc2 35.Ke2 c1Q 36.Rd8 Ke7–+) 0–1. Brunner,Hermann – Rohde,Matse, DESC T0031 email, 2001. (=1.a3 g6 2.b4 Bg7 3.d4 Nf6)

4.Nf3 0–0 5.e3 d6 6.Bb2 Nbd7 7.Be2 e5 8.c4 ed4 9.Bd4 b6 10.0–0+= Bb7 11.Nbd2 Qe7 12.Qc2 Rfd8 13.Qb2 c5 14.Bc3 Rab8 15.Rfd1 a6 16.Nf1 b5 17.cb5 ab5 18.bc5 Nc5 19.Bd4 Ne6 20.Bc3 Nc5 21.Qa2 Na4 22.Bd4= Ne4 23.Bg7 Kg7 24.Rd4 Nac3 25.Qb2 Qf6 26.Bd3 Rbc8 27.Rc1 Rc5 28.Be4 Ne4 29.Rcd1 Rdc8 30.Qb4 Nc3–/+ 31.R1d2 Bf3 32.Rf4 Rf5 33.gf3 Rf4–+ 34.Qf4 Qf4 35.ef4 Ra8 36.Rd6 Ne2 37.Kg2 Nf4 38.Kg3 Ne2 39.Kg2 Ra3 40.Ne3 Ra1 41.h4 h5 42.Rb6 Rg1 43.Kh2 Rb1 44.Nd5 Rb3 45.f4 Nd4 46.Ne3 Rb2 47.Kg2 b4 48.Rd6 Nb5 49.Rb6–/+ Nd4 50.Rd6 Ne6 51.f5 gf5 52.Nf5 Kf6 53.Ne3 b3 54.Kf3 Rb1 55.Rb6 Ke5 56.Kg3 Ke4 57.Rb4 Kd3 58.Kf3 Nd4 59.Kg2 Rc1 60.Rb8 Rc5 61.Kh2 Rb5 62.Rb5 Nb5 63.Nd1 Kc2 64.Ne3 Kc1 65.Nc4 Nd6!! 66.Na3 Kb2 0–1. Ni Hua (2635) – Ye Jiangchuan (2645), Torch Real Estate Cup, Jinan CHN, 2005. (=1.a3 g6 2.b4 Bg7)

4.Nf3 0–0 5.e3 d6 6.Be2 Nbd7 7.0–0 e5 8.Bb2 e4 9.Nfd2 d5 10.c4 c6 11.Nc3 Nb6 12.c5 Nbd7 13.b5 Ne8 14.Qe1 f5 15.f3 Bh6 16.f4 Bg7 17.Qg3 Qa5 18.Rac1 Ndf6 19.Nb3 Qc7 20.Rb1 Bd7 21.a4 a6 22.b6 Qd8 23.Na5 Rb8 24.Qg5 Kf7 25.Qh4 Kg8 26.Rfd1 Qe7 27.Nb3 Be6 28.Qg5 Rd8 29.Rf1 Bc8 30.Nd2 Rd7 31.Qg3 Qf7 32.Nb3 Re7 33.Rbd1 Kh8 34.Nd2 Rg8 35.Rb1 Nd7 36.a5 Nef6 37.Rfd1 Nh5 38.Qf2 Nf8 39.Nb3 g5? 40.fg5+– Qg6 41.Qh4 Nf6 42.gf6 Bf6 43.Qf2 Reg7 44.Bf1 Qh6 45.Ne2 Bh4 46.g3 Ne6 47.Rbc1 Bg5 48.Rc3 f4 49.ef4 Nf4 50.Nf4 Bf4 51.Bc1 e3 52.Be3 Be3 53.Qe3 Qe3 54.Re3 Bg4 55.Rde1 h5 56.Bd3 Rg6 57.Bg6 (57...Rg6 58.Re7+–) 1–0. pierred – pejton2004, Yahoo, 2005.

4.Nf3 0–0 5.e3 d6 6.Be2 Nbd7 7.0–0 e5 8.Bb2 e4 9.Nfd2 Re8 10.c4 Nf8 11.Nc3 h5 12.Rb1 N8h7 13.Qa4 Bd7 14.Qa5 (14.Qb3 Ng5+=) 14...b6 (better is 14...a6!? 15.b5 ab5+=) 15.Qa6+= Bc8 16.Qa4 Bd7 17.Qc2 (Increases the pressure on e4) 17...Qe7 18.Rfd1 Bf5 19.b5 Ng4 20.Nd5 Qh4 (Black gets in control) (20...Qd7!?+/–) 21.Bg4+– hg4? (better is 21...Bg4 22.Nc7 Bd1 23.Rd1 Nf6+–) 22.Nc7 Ng5 23.c5 (23.Ne8 Nf3 24.Nf3 ef3+–) 23...Nf3 24.gf3 gf3 25.Kf1 Bh6 26.Ne8 Re8 27.Ke1?? (27.Nc4 Qh2 28.Ke1=) 27...Be3–+ 28.Nf1 Bf4 29.Ne3 Be3 30.Bc1 Bc1 31.Rbc1 e3 (31...e3 32.Rd3 ef2 33.Kd2 Re2 34.Kc3 Rc2 35.Rc2 f1Q 36.Rd1 Qd1 37.Rd2 Qd4 38.Kd4 Qd2 39.Kc4 Be6#) 0–1. marekt (2190) – Prabu77 (2165), ICC, 2003.

2.a4 d5

3.Bb2 f6 4.d4=+.

3.Bb2 Nf6

4.e3= Bf5 5.Bb5 Bd7 6.Nf3 Nc6 7.Bc6 Bc6 8.b5 Bd7 9.Bf6 ef6 10.0–0 Bg4 11.d4 (11.Nc3 Bb4+=) 11...Qd7 12.Nbd2 0–0–0 13.Rb1 Bf5 14.Rb3 h5 15.a5 h4 16.b6 Qe6 17.ba7–/+ Qa6 18.Qb1 Qa7 19.Qb2 Bd7 20.Ra1 Bc6 21.Qc3 Kd7 22.Qd3 h3 23.gh3 Rh3 24.a6 b5 25.e4 Kc8 26.Qf1 Rh5 27.ed5 Bd5 28.Rb5 Qd4? 29.a7+– Qg4 30.Qg2 Qg2 31.Kg2 Ba8 32.Rb8 Kd7 33.Rd8 Kd8 34.Rb1 Ke7 35.Rb8 Bc6 36.a8Q Ba8 37.Ra8 Rb5 38.Nd4 Rg5 39.Kf3 Rc5 40.N2b3 Rc3 41.Kg2 f5 42.f3 Bg7 43.Ra2 Be5 44.Ne2 Rc4 45.Na5 Rc5 46.c4 f4 47.Ra4 Bd6 48.Nb7 Rg5 49.Kf1 Be5 50.Nc5 Rf5 51.Ra7 f6 52.Nd3 Kd7 53.Ne5 fe5 54.Nc3 Kc6 55.Ke2 Kb6 56.Ra2 Rh5 57.Kd3 Rh3 58.Nd5 Kc5 59.Ra5 Kd6 60.Ke4 Rh2 61.c5 Kc6 62.Ne7 Kb7 63.Ng6 Re2 64.Kf5 e4 65.Nf4 ef3 66.Ne2 fe2 67.Ra1 Kc6 68.Re1 Kc5 69.Ke5 Kc4 70.Re2 Kd3 71.Rg2 c5 1–0. COMP – COMP, 2002.

4.Nf3= Bf5 5.e3 Nc6 6.Bb5 Qd6 7.Bc6 (7.Be5 Qb4 8.Nc3 Qc5+=) 7...Qc6 8.Nd4 Qd7 9.Nf5 Qf5 10.0–0 Qe6 (10...Bg7 11.Nc3=) 11.Qf3 0–0–0 12.Bd4 Bg7 13.Ba7 b6 (13...Qg4!? 14.Qg4 Ng4+=) 14.a5–/+ Ng4 15.d4+– Be5 16.de5 Nh2 17.Kh2 Qe5 18.Kg1 Qa1 19.ab6 Qg7 20.bc7 Kc7 21.Rd1 e6 22.Bd4 e5 23.Bc5 Rhe8 24.Rd5 f5 25.c4 e4 26.Qf4 Kb7 27.Bd4 Qc7 28.Rb5 Kc8 29.Rc5 Qc5 1–0. COMP – COMP, 2002.

3.d4 e5

4.de5 Bb4 5.Bd2 Nc6 6.Bb4 Nb4 7.Nf3 Bg4 8.Ra3 Qe7 9.Nd4 0–0–0 (9...Qe5? 10.Re3 Qe3 11.fe3+–) 10.Rb3 Qc5 (10...f6!? 11.c3 Na6=+ (Worse is11...fe5 12.Rb4 ed4 13.Qd4–/+)) 11.c3+= Na6 12.Rb2 c6 (12...f6!? 13.Qb3 Qb6+=) 13.Nb3–/+ Qb6 14.a5 Qc7 15.Qd4 Bf5 16.Qa7 Bb1 17.Rb1 Qe5 18.e3 Qc3–/+ 19.Kd1 d4? 20.Nd2+– Nc5 21.a6 b5 22.Rc1 Qa5 23.Qc5 Qc7 24.a7 Kb7 25.Bb5! Ne7 26.ed4 Rd5 27.Bc6 Qc6 28.Qe7 Rd7 1–0. COMP – COMP, 2002.

2.a4 e5

3.c4 Bb4!? 4.Nf3 d6 –/+.

3.c4 Bg7 4.c5 Nf6 5.Nc3 0–0 6.Ba3 e4 7.Rb1 d6 8.e3 d5 9.b5 c6 10.f3 ef3 11.Nf3 Ne4 12.Ne4 de4 13.Nd4 Bd4 14.ed4 Qd4 15.Bb2 (better is 15.Rb4!? Qd5 16.Qc2+=) 15...Qc5–+ 16.Rc1 Qh5 (16...Qb4 17.Bc3 Qd6 18.Be2–+) 17.Be2? (better is 17.Qh5!? gh5 18.Rc5=) 17...Qh4–/+ 18.g3 Qh3 19.Bf1 Qg4 20.Be2 Qf5 21.g4 Qf4 22.Rf1 Qh2 23.Qb3 Qh4 24.Kd1 Bg4 25.Bg4 Qg4 26.Kc2 Nd7 27.Qc3 f6 28.bc6 bc6 29.Qc6 Rac8 30.Qc8 Rc8 31.Kb1 Rc1 32.Rc1 Qe2 33.Rc8 Kf7 34.Rc7 Ke6 35.Rc6 Kd5 36.Rc2 Qe1 37.Ka2 Qd1 38.Rc3 Qd2 39.Rb3 e3 40.Rb5 Kc6 41.Rb4 e2 42.Rc4 Kd5 43.Rd4 Qd4 44.Bd4 Kd4 (44...Kd4 45.Kb1 e1Q 46.Kc2 Qc3 47.Kb1 Qb3 48.Kc1 Kd3 49.a5 Qc2#) 0–1. bogdanmik – miroslaw69, kurnik, 2012. (=1.a4 e5 2.b4 g6)

3.Nf3 Bb4 4.Ne5 d5 5.Bb2=.

2.a4 Bg7

3.Ra2 d6 4.b5 b6 5.e3 Bb7 6.d4 Nd7 7.Nf3 e6 8.Be2 Ne7 9.0–0 0–0 10.c4 h5 11.Ng5 Nf5 12.f4 Qe7 13.g3 f6 14.Nf3 Nh6 15.h3 Kh7 16.Nh2 e5 17.de5 fe5 18.Bf3 Bf3 19.Qf3 Rae8 20.Qg2 ef4 21.ef4 Nc5 22.Ba3 Nf5 23.Bc5 dc5 24.a5 Qe3 25.Kh1 Ng3 26.Qg3 Qg3 27.Rg2 Qe3 28.Nf3 Bd4 29.Ng5 Kg7 30.Kh2 Rf4 31.h4 Rh4 32.Nh3 Qh3 0–1. piratzly – ricardow71, kurnik, 2012.

3.c3 a5 4.b5 c6 5.e3 Nf6 6.Nf3 b6 (6...0–0!?–/+) 7.d4= Bb7 8.bc6 dc6 (8...Nc6 9.Bd3=) 9.Bd3= 0–0 10.e4 (10.0–0 Ba6+=) 10...b5 (better is 10...c5 11.d5 c4–/+) 11.e5+= Nd5 12.ab5 cb5 13.Bb5 Ba6 (13...Nc6!?+=) 14.Ba6+/– Ra6 15.c4 Nc7 (15...Nb4!? 16.0–0 f6+/–) 16.Nc3+– Nc6 17.Ne4?? (better is 17.0–0+–) 17...Nd4= 18.Qd4 Qd4 19.Nd4 Be5 20.Be3 Ne6?? (better is 20...Bd4 21.Bd4 Re6=) 21.Ne6+– fe6 (21...Re6 22.Ra4+– (22.Ra5?! Bc7 23.Ra7 Bb8=)) 22.Ra3 a4 23.Nc5 Rc6 (23...Bd6 24.Ra4 Ra4 25.Na4+–) 24.Nd3 Bd6 (24...Bh8 25.Ra4 Kf7+–) 25.c5 Bc7 26.Ra4 Rc8 (26...Rb8 27.Ke2 Bd8+–) 27.Nb4 (27.Nb4 Rc5 28.Bc5+–) 1–0. JenSpeed (2195) – Polymorphe (1820), FICS rated standard game, 2013. (=1.a4 g6 2.b4 Bg7)

3.c3 b6 4.Na3 Bb7 5.Nc2 Nc6 6.d4 e6 7.e4 d5 8.e5 Nce7 9.Nf3 Rc8 10.Bd3 c5 11.Bb5 Bc6 12.bc5 bc5 13.dc5 Bb5 14.ab5 Rc5 15.Ncd4 Rc3 16.Ba3 Qa5 17.0–0 Ra3 18.Rc1 Rc3 19.Ra1 Qc7 20.Qa4 Rc4 21.Qa6 Nh6 22.Ne6 fe6 23.Qe6 Qd7 24.Qa6 0–0 25.e6 Qc8 26.Rad1 Qa6 27.ba6 0–1. pajac500 (1650) – popovicigelu, kurnik, 2012. (=1.a4 g6 2.b4 Bg7)

3.Nc3 Nf6

4.d4 d5 5.e3 0–0 6.Nf3 Ne4 7.Ne4 de4 8.Nd2 e5 9.c3 Re8 10.Bb2 (< 10.Ne4 ed4 11.f3 f5 12.Bc4 Kh8–+) 10...Bf5 11.Bb5 c6 12.Be2 a5 13.ba5 ed4 14.cd4 Qa5 15.0–0 Ra7 16.Nc4 Qd8 17.Ba3 Bf8 18.Bf8 Rf8 19.Bg4 (19.Qc2 Qe7+=) 19...Bg4 +=.

4.d4 d5 5.e3 Nc6 6.b5 Nb4 7.Ba3 a5 8.ba6 Na6 9.Bb5 c6 10.Be2 Bf5 11.Nf3 0–0 12.0–0 Re8 13.Nh4 Bd7 14.Rb1 Bc8 (14...Qa5 15.Rb3=+) 15.Nf3 Nb8 16.Ne5 Nbd7 17.Nd7 (17.f4 Qc7=) 17...Nd7=+ 18.Bb4 (18.f4 b5=+) 18...e5 19.Qd2 b6 20.Bf3 (20.Rfd1 ed4 21.ed4 c5–/+) 20...Qh4 21.de5 Ne5 22.Bd1 (22.Be2!?–/+) 22...Nc4 –+.

3.d4= b6

4.e4 a5 5.b5 Bb7 6.Nc3 c5 7.bc6 Nc6 8.Nf3 d6 (8...Nb4 9.Rb1=) 9.Rb1 (9.Bb5 e6–/+) 9...Nf6+= 10.d5 Nb4 11.Bb5 Nd7 12.Ne2 Rc8 13.c3 Na6 14.Be3 Nac5 15.Bd4 0–0 16.Bg7 Kg7 17.Bd7 Qd7 18.Qd4 f6 19.Rb6 Ba6 20.Nf4 Ra8 21.Ng5 Rfc8 22.Nge6+= Ne6 23.Ne6–/+ Kf7 24.f3 Rc4?? 25.Ra6+– Rd4 26.Ra8 g5 27.Rf8 Kg6 28.Rg8 Kh6 29.Nd4 Qa4 30.Nf5 1–0. lucya (2195) – Nahual (1860), GameColony.com, 2002.

4.e4 Bb7 5.f3 c5 6.bc5 bc5 7.c3 cd4 8.cd4 Qa5 9.Bd2 Qb6 10.Bc3 Nc6 11.a5 Qc7 12.a6 Nd4?? (Better is 12...Bc8+=) 13.Bd4+– (13.ab7?! Qb7 14.Bc4 Kf8+–) 13...Bd4 14.Qd4 (14.ab7?! Bc3 15.Ke2 Rb8 16.Nc3 Qc3 17.Ra7 Nf6+–) 14...Qa5 (14...Ba6 15.Ba6 e5+–) 15.Ra5 (15...Nf6 16.ab7+–) 1–0. b4_player (1930) – SeeB, GameColony.com, 2002.

4.e4 Bb7 5.f3 e6 6.Ne2 (6.c3 a5 7.b5 e5=) 6...Ne7 (6...f5 7.Nd2=) 7.a5 0–0 8.ab6 (8.Qd3 e5=) 8...ab6 9.Ra8 Ba8 10.Qd3 (10.c3 d5 11.e5 c5=) 10...Nbc6 (10...d5 11.Bg5=) 11.b5 Na7 (11...Na5 12.Bf4=) 12.c3 (12.Bf4 f5=) 12...d5 13.e5 Nf5 14.Ba3 Re8 15.Nd2 Qd7 16.Ng3 c6 17.Nf5 ef5 18.bc6 Qc6 19.Be2+= f6 20.f4 fe5 21.fe5–/+ Bb7 22.0–0 Nc8 23.Qg3 Ne7 24.Bd6 Qd7 25.Re1 Nc8 26.Bb4 Bc6 27.Nf3 Na7 28.Ra1 Nb5 29.Bd3 Rc8 30.Re1 Qe8 31.Qh4 Bd7? 32.e6!+– Bc6 33.Ng5 h6 34.Nf7 Kh7 35.Bb5 Bb5 36.Nd6 Qd8 37.Qd8 Rd8 38.Nb5 Re8 39.Nc7 Rc8 40.e7 1–0. market (2290) – Chapo_Mayor (2040), GameColony.com, 2002.

4.e4 Bb7 5.f3 f5 6.ef5 gf5 7.a5=.

3.d4= Nc6

4.c3 Nf6 5.d5 Nb8 6.Nf3 b6 (6...d6 7.Qd3=) 7.Qd3 Bb7 8.e4 d6 (8...c6 9.d6=) 9.Be2 (9.a5 c6 10.a6 Bc8=) 9...Nbd7 10.a5 Ng4 11.0–0 0–0 12.a6 Bc8 13.Nd4 Nge5 14.Qg3 Nb8 15.b5 Bd7 16.f4 Ng4 17.Bg4 Bg4 18.Qg4 h5 19.Qg3 e5 20.de6 Bd4 21.cd4 fe6 22.Qg6 Kh8 23.Qh5 Kg7 24.Ra3 Rf6 25.Rg3 Kf8 26.Qh8 Ke7 27.Rg7 Rf7 28.Rf7 Kf7 29.Qd8 1–0. kamret (2195) – Shahbaz33333 (1695), GameColony.com, 2003.

3.d4= d5

4.e3 e5 5.Bb2 ed4 6.Bd4 Nf6 7.Bb5 c6 8.Bd3 0–0 9.Nf3 Ne4 10.0–0 Bg4 11.h3 Bf3 12.Qf3 Bd4 13.ed4 f5 14.a5 Qf6 15.c3 Nd7 16.Re1 Rae8 17.Qf4 g5 18.Qc7 g4 19.Re3 Re7 20.Qf4 gh3 21.Rh3 Rg7 22.Rh6 Qg5 23.Qg5 Rg5 24.f3 Nef6 25.Na3 Kg7 26.Rh1 Nh5 27.Rh4 f4 28.Re1 Rf7 29.Nc2 Ndf6 30.a6 b6 31.Na3 c5 32.bc5 bc5 33.dc5 Rc7? 34.Nb5+– Rc5 35.Re7 Kh6 36.Ra7 d4 37.c4 Rg7 38.Rg7 Kg7 39.a7 Rc8 40.Nc7! Kf7 41.c5 Ke7 42.g4! Ng3 43.g5 (43...Nfh5 44.a8Q Ra8 45.Na8+–) 1–0. pierred – doktorb5, Yahoo, 2005.

3.d4= d6

4.e4 c5 5.c3 cb4 6.cb4 Nc6 7.Bb5 a6 8.Bc6 bc6 9.Nf3 Qb6 10.0–0 Qb4 11.Na3 (11.Nbd2 d5= (11...Bd4? 12.Rb1 Bf2 13.Rf2+–)) 11...Nf6 12.Bd2 Qb6 13.Rb1 Qc7 14.Qc2 0–0 15.Rb3 Be6 16.Rc3 Rfc8 17.d5 Bg4 18.Rc6 Qd7 19.Rc1 Rc6 20.dc6 Qc7 21.Qd3 Bf3 22.Qf3 Rb8 23.Rc2 Rb6? (Better is 23...Ra8=) 24.Ba5+– Rc6?? (Better is 24...Ne8+–) 25.Bc7 Rc2 26.Nc2 (26...Nd7 27.a5+–) 1–0. COMP – NN, 2003.

4.e4 Nc6 5.c3+= e5 6.b5 Nce7 7.de5 Be5 8.Nf3 Bg7 9.Bd3 Nf6 10.0–0 Bg4 11.h3 Bf3 12.Qf3 (< 12.gf3 Qd7 13.Kg2 0–0–0=) 12...0–0 13.Rd1 Nh5 14.Bg5 f5 15.ef5+– Qd7 16.Qb7 Nf5 17.g4 h6 18.Bc1 Rab8?? 19.Qd5 Kh8 20.gf5 gf5 21.Qf3 Qf7 22.Kh1 f4 23.a5 Be5 24.Re1 Rg8 25.Ra4 Rg7 26.Rb4 Rbg8 27.Bc4 Ng3 28.fg3 Rg3 29.Qg3! d5 30.Qh4 Qg6 31.Bd5 1–0. guest2458 – guest1239, ICC, 2003.

3.d4= e6

4.e4 Ne7 5.Nf3 0–0 6.Be2 c6 (6...d6 7.c3=) 7.0–0+/– d6 8.c3 Nd7 (8...c5 9.bc5 dc5 10.dc5+=) 9.a5 a6 (9...c5 10.Re1+=) 10.Re1 f5 11.Qb3 d5 12.ed5 Nd5 13.c4+– Nc7 14.Bf4 Nf6 15.Be5 h6 16.Nc3 Kh7 17.Rad1 Qe7 18.Na4 Ng4 19.Bg7 Qg7 20.Nb6 Rb8 21.h3 Nf6 22.Ne5 Nd7 23.Nbd7 Bd7 24.Qg3 f4 25.Qf3 Be8 26.Bd3 Rd8 27.Be4 Rf6 28.h4 h5 29.Qh5 Kg8 30.Qg5 Rd6 31.c5 Rd8 32.Ng4 Rf5 33.Qd8 (33...Rf8 34.Qg5+–) 1–0. Trkn – guest3043, ICC, 2004.

4.Nf3 Nc6 5.b5 Nb4 6.Ba3 Nd5 7.e4 Nf4 8.g3 Nh5 9.Nc3 a6 10.ba6 Ra6? 11.Ba6+– ba6 12.0–0 Nhf6 13.e5 Ng4 14.Rb1 h5 15.Ne4 h4 16.h3 hg3? 17.hg4 f6 18.fg3 f5 19.gf5 gf5 20.Nfg5 fe4 21.Nf7 e3 22.Qg4 Bb7 23.Nd6! Ke7 24.Qg7# 1–0. usingprogram – czeg0ochc3sz, internet, 2011.

3.d4= Nf6

4.Nc3 0–0 5.e4= d6 6.Nf3 (6.Rb1 c5 7.dc5 Nfd7=) 6...Nbd7 (6...c5 7.b5=+) 7.Bg5 (7.Bd3 e5=) 7...e5 (7...c5 8.Rb1=) 8.Bb5 (8.de5!? de5 9.Qd2=) 8...ed4=+ 9.Qd4 a6 10.Bc4 c5 11.Qd6=+ cb4 12.Qb4= Re8 13.0–0+/– h6 14.Qb3 Re7 15.Bf6 Bf6 16.Bd3 Ne5 17.Be2 Be6=+ 18.Qb4 Bc8?? 19.Nd5 Re6 20.Nf6 Rf6?? 21.Ne5+– Re6 22.Nf7 Kf7 23.Bc4 a5 24.Be6 Ke6 25.Qc4 Ke7 26.e5 Kf8 27.e6 Qe7 28.Rfe1 Rb8 29.Qf4 (29...Kg7 30.Qb8 Be6 31.Rab1+–) 1–0. market (2185) – xMikhail_Talx (1615), GameColony.com, 2002.

4.Nc3 d5 5.Nf3 =+.

4.e3 0–0 5.Nf3 b6 6.Bd3 Bb7 7.0–0 d6 8.a5 a6 9.c3 Nbd7 10.Nbd2 e5 11.e4 Re8 12.d5 c5 (12...c6 13.dc6 Bc6 14.Re1+=) 13.Nc4+/– Qc7 14.ab6 Nb6 15.Nb6 Qb6 16.Qa4 (16.Be3 Nd5 17.ed5 e4+=) 16...cb4 (16...Bd5 17.ed5 e4 18.bc5 dc5 19.Rb1–/+) 17.Be3 Qc7 18.cb4 Qd7 19.Qd7+/– Nd7 20.Rfc1 Rec8 21.Rc8 Bc8 22.Ra2 Bb7 23.Ra5+/– Bf8 24.g4 Be7+/– 25.g5 Bd8 26.Ra4 Nb6 27.Ra3 Nd7 28.Nd2 Bb6 29.Nc4 Bc7 30.Na5 Ba5 31.Ra5 Kf8 32.Kg2 Ke7 33.Kg3 f6 34.h4 fg5 35.hg5 Kd8 36.Ra1 Ke7 37.Rh1 Rh8 38.Rh6 Kf7 39.Be2 Kg7 40.Bg4 Rd8 41.Rh1 Nf8 42.Bb6 Rc8 43.Bc8 Bc8 44.Bc7 (44...Kg8 45.Bd6+–) 1–0. market (2180) – Cerati (1915), GameColony.com, 2002.

4.e3 d5=.

4.Nf3 b6 5.e3 Bb7 6.Bc4 0–0 7.0–0 d6 8.Nbd2 d5 9.Bd3 Qd6 10.Ba3 Qd7 11.Ne5 Qd8 12.a5 Nbd7 13.a6 Bc8 14.Nc6 Qe8 15.b5 e5 16.c4 dc4 17.Bc4 e4 18.f3 ef3 19.Qf3 (19.Bf8?! fg2 20.Rf6 Nf6+–) 19...Ne4 (19...Kh8+–) 20.Ne4 Nb8 (20...Kh8 21.Bf8 Nf8+–) 21.Bf8 Bf8 22.Nf6 Kh8 23.Ne8 Nc6 (23...Bf5 24.Ne5 c6 25.Nf7 Kg8 26.Qh3 h5 27.Rf5 Bg7 28.Ne5 Kh7 29.Rf7 Kg8 30.Re7 Kh7 31.Rg7 Kh8 32.Ng6#) 24.Qf6 Kg8 25.Bf7# 1–0. kamret (2195) – Shahbaz33333 (1695), GameColony.com, 2003.

4.Nf3 c6 5.e3 0–0 6.Bd3 d5 7.0–0 Bg4 8.h3 Bf3 9.Qf3 (< 9.gf3 a5 10.b5 c5=+) 9...Nbd7 10.Bb2 a6 11.c4 dc4 12.Bc4 e6 13.Nd2 Qc7 14.Rfc1 Rad8 15.b5 Nd5 (15...ab5 16.ab5 Ra8 17.bc6 Qc6 18.Qc6 bc6 19.Ba3+=) 16.ba6 ba6 17.Bd5 (17.Ba6?! Qb6 18.Ba3 Qa6 19.Bf8 Rf8=+) 17...ed5 18.Qd5! Nb8 (18...cd5 19.Rc7) 19.Qc4 Rfe8 20.Nb3 a5 21.Qb5 cb5 22.Rc7 ba4 23.Ra4 Na6 24.Rb7 Rb8 25.Na5 Rb7 26.Nb7 Rb8 (26...Nc7+–) 27.Ra6 Rb7 28.Ra8 (28…Bf8 29.Ba3+–) 1–0. marekt (2480) – JFRAY (1755), ChessWorld.net, 2003.

4.Nf3 d5 5.e3 0–0 6.Bd3 c6 7.0–0 Bg4 8.h3 Bf3 9.Qf3 (< 9.gf3 a5 10.b5 c5=+) 9...Nbd7 10.Bb2 Qc7 11.a5 e5 12.Qg3 Rac8 13.de5 Nh5 14.Qh2 Ne5 15.Bd4 Nd3 16.Qc7 Rc7 17.Bg7 Ng7 18.cd3 c5? (Better is 18...d4=) 19.Nc3+/– Rd8 20.Nb5 Rc6 21.bc5 Rc5 22.Na7 Ra8 23.d4 Rc4 24.Nb5 Ra6 25.Rfb1 Nf5 26.Ra3 Rac6 27.Rbb3 Rc1 28.Kh2 R6c2 29.Rc3 h5 30.Rc2 Rc2 31.Nc3 Rf2 32.Nd5 Rb2 33.Kg1 Kf8 34.Nb6 Rb1 35.Kf2 Rb2 36.Kf3 Nh4 37.Ke4 Ng2 38.Rc3 Ra2 39.d5 Ke7 40.Rc7= Kf6 41.d6 Ke6 42.Nc4 f5 43.Kd4 Ra1 44.Rb7 Ne1 45.Re7 Kf6 46.e4 Rd1 47.Kc5 Nd3 48.Kc6?? Rc1 49.e5 Ne5 50.Re5 Rc4 51.Rc5 Rd4 52.Rd5 Rc4 53.Kb7 Rb4 54.Ka7 Ke6 55.d7 Kd5 56.d8Q Kc4 57.Qg8 Kd4 58.Qg6 f4 59.Qd6 Kc3 60.Qc5 Rc4 61.Qa3 Kd4 62.a6 Ke4 63.Kb6 f3 64.Qe7 Kd3 65.a7 f2 66.a8Q f1Q 67.Qd6 Ke3 68.Qaa3 Ke4 69.Qe6 (69...Kd4 70.Qae3#) 1–0. marekt – waycoolguy, ChessWorld.net, 2003.

4.h4 0–0 5.f3 d5 6.g4 Nc6 7.c3 e5 8.a5 ed4 9.b5 Ne5 10.cd4 Nc4 11.Ra4 Re8 12.e4 Qd6 13.e5 Ne5 14.Ne2 Nf3 15.Kf2 Bg4 16.Bf4 Ne4 17.Kg2 Qf6 18.Be5 Ne5 19.de5 Qf2 0–1. aninha49 – xalmesx, kurnik, 2012. (=1.a4 Nf6 2.d4 g6 3.b4 Bg7)

4.h4 d6 5.Nf3 Nbd7 6.c3 c5 7.Nbd2 cb4 8.cb4 0–0 9.e4 e5 10.de5 Ne5 11.Ne5 de5 12.Rb1 Qe7 13.Be2 Rd8 14.Qc2 Be6 15.Qc5 Qd7 16.Bb5 Qd4 17.Qd4 ed4 18.Bd3 Nd7 19.Nf3 Bf8 20.h5 Rac8 21.Bf4 Bg7 22.h6 Bh8 23.Ke2 Rc3 24.Rhc1 Nb6 25.a5 Na4 26.e5 Rd3 27.Kd3 Bf5 28.Kd2 Bb1 29.Rb1 Nc3 30.Rc1 Ne4 31.Ke1 d3 32.Rc7 d2 33.Nd2 Nd2 34.Bd2 Be5 35.Rb7 Bd4 36.b5 Re8 37.Kf1 f6 38.Rg7 Kh8 39.Rd7 g5 40.Rd4 1–0. guest1149 – guest233, ICC, 2003.

4.Nf3 0–0

5.c4 d6 6.Bb2 Nc6 7.Qb3 a6 8.d5 Nb8 9.Nc3 (9.a5 e6=) 9...c5 (9...a5 10.ba5 Nbd7 11.e3=+) 10.bc5= dc5 11.e4 Nbd7 (11...Qa5 12.Nd2=) 12.Bd3+= b6 13.0–0 Bb7 (13...Rb8 14.Ne2+=) 14.a5–/+ b5 15.cb5+– ab5 16.Bb5 Ba6 17.Rfb1 Bb5 18.Qb5 Rb8 19.Qc4 Rb4 20.Qe2+– Qb8 21.Ba3 Rb1 22.Rb1 Qa7 23.e5 Ne8 24.a6 1–0. b4_player – Cool_it, GameColony.com, 2002.

5.e3 Nc6 6.b5 Na5 7.Bd3 c6 8.e4 cb5 9.ab5 d6 10.Bd2 b6 11.Qe2 Bg4 12.h3 Bh5 13.g4 Ng4 14.hg4 Bg4 15.Ra4 e5 16.de5 Be5 17.Qe3 Qf6 18.Ne5 de5 19.Qh6 Bf3 20.Qh7# 1–0. guest2128 – guest2080, ICC, 2003.

5.e3 d5 6.c4 a5 7.b5 c5 8.bc6 bc6 9.Ba3 Na6 10.cd5 Nd5 11.Nbd2 Rb8 12.Rc1 Ndb4 13.Bb4 Nb4 14.Be2 e5 15.Ne5 Be5 16.de5 Nd3? (better is 16...Qg5 17.Nf3 Qg2+=) 17.Bd3+– Qd3 18.Qc2 (18.Nc4!? Qd1 19.Kd1 Rd8 20.Ke2+/–) 18...Ba6 19.Qd3 Bd3 20.Rc3 Rfd8 21.Nb3 (21.Rc6!? Rb4 22.f3+/–) 21...c5= 22.h4 (22.Kd1 Rb4+=) 22...c4+= 23.Nc1 Rb2 24.Nd3 cd3 25.0–0 Rc2 26.Ra3 d2 27.Raa1 Rdc8 28.Rad1 R8c4 29.f4 Ra4 30.Kf2 Raa2 31.Ke2 a4 32.Kd3 a3 33.e4 Kf8 34.f5 Ke7 35.g4 Rab2 36.g5 a2 37.Rh1 (37.e6 fe6 38.f6 Kf7–+) 37...Rc1! 38.Rc1 dc1Q 39.Rc1 Rb1 (39...Rb1 40.Rc7 Kd8–+) 0–1. Rantanen,Yrjo A (2435) – Mortensen,Erling (2475), Helsinki, 1983. (=1.d4 Nf6 2.Nf3 g6 3.b4 Bg7 4.a4 0–0)

5.e3 d5 6.Bd3 Ne4 7.0–0 Bg4 8.Bb2 Nc6 9.b5 Nb4 10.Be2 Bf5 11.Nh4 Bd7 12.c3 e5 13.Nf3 ed4 14.ed4 a6 15.cb4 ab5 16.ab5 Ra1 17.Ba1 Bg4 18.Nc3 Bf5 19.Ne4 Be4 20.Ne5 Qd6 21.Bc3 Re8 22.Bf3 Qe6 23.Re1 f5 24.Be2 Qb6 25.Bf1 Ra8 26.Qd2 Ra3 27.Kh1 1–0. pereira – perryb, internet, 2007.

5.e3 d6 6.Bc4 Bg4 7.h3 Bd7 8.0–0 Nc6 9.Bd2 e6 10.b5 Ne7 11.Nc3 d5 12.Bd3 c6 13.Ne5 cb5 14.ab5 a6 15.ba6 ba6 16.Ra6 Ra6 17.Ba6 Nc6 18.Qf3 Ne5 19.de5 Ne8 20.Qg3 (20.e4!?+=) 20...Qc7= 21.f4 Qb6 (21...f6 22.ef6 Bf6 23.Qe1=) 22.Bd3+= Nc7 (22...f6 23.Rb1 Qa5 24.ef6 Nf6 25.Qe1+=) 23.Ne2 Bb5 24.Nd4 Bd3 25.cd3 Nb5 26.Rb1+/– Qc7?? 27.Rb5+– Ra8 28.e4 de4 29.de4 Ra4 30.Be3 Qd7 31.Rb8 Bf8 32.Ne6 fe6 33.Bc5 Ra1 34.Kh2 Kg7 35.Bf8 Kf7 36.Qh4 Qc7 37.Qh7 1–0. b4_player (2095) – NN, GameColony.com, 2002.

5.e3 d6 6.Be2 e5 7.c3 e4 8.Nfd2 Qe7 9.b5 Ne8 10.–0 f5 11.Qc2 Kh8 12.c4 c5 13.bc6 bc6 14.Bb2 Nd7 15.a5 Ba6 16.Nc3 Nef6 17.c5 Be2 18.cd6 Qd6 19.Ne2 c5 20.Ba3 Ng4 21.g3 Rfc8 22.Nb3 Qa6 23.Bc5 g5 24.h3 Ngf6 25.Rfc1 Rab8 26.Rab1 Nd5 27.Qc4 Qc4 (worse is 27...Nc5 28.dc5 Qc4 29.Rc4+/–) 28.Rc4 Bf8 29.Rcc1 Bc5 30.Nc5 (30.dc5?! Nc5 31.Ned4 Nb3 32.Rc8 Rc8 33.Rb3 f4+=) 30...Rb1 31.Rb1 Nc5 32.Rc1 (32.dc5?! Rc5 33.Nd4 Ra5 34.Nf5 h5+=) 32...Nb4 33.Rc5 (33.dc5?! Nd3 34.Rc2 Rc5 35.Rc5 Nc5+=) 33...Rc5 34.dc5 Na6 35.c6 Nc7 36.Nd4 Kg7 37.Nf5 Kf6 38.Nd4 Ke5 39.Kg2 Kd5 40.f3 ef3 41.Kf3 Kc5 42.Kg4 Kb4 43.a6 Kc5 44.Kf5 Na6 45.Ke6 Nc7 46.Kd7 Nd5 47.c7 Nb6 48.Kd8 Kd5 49.Nb3 h5 50.g4 h4 51.e4! (51.e4 Ke4 52.Nc5 Kf3 53.Nd7+–) 1–0. Bondar,Wladimir – Kamenets,Anatolij (2405), UKR–ch op Alushta, 1999. (=1.d4 Nf6 2.Nf3 g6 3.b4 Bg7 4.a4 0–0)

5.c4 Nc6

6.b5 Nb4

7.a5 d6 8.Bd2 c5 9.Qb3 e5 10.Bb4 cb4 11.Qb4 ed4 12.Nbd2 Re8 13.Rd1 =+ (13.Nd4? Ng4 14.Qc3 Nf2–+).

7.a5 d6 8.Bd2 c5 9.Qb3 e5 10.Bb4 cb4 11.Qb4 ed4 12.Nbd2 Ng4 13.Nb3 d3 14.Rd1 Bf5 15.ed3 Re8 16.Be2 Qe7 17.Nc1 =+.

7.a5 d6 8.Bd2 c5 9.Qb3 e5 10.Bb4 cb4 11.Qb4 ed4 12.Nbd2 Ng4 13.Nb3 d3 14.Rd1 Bf5 15.e3 Qe8 16.Rd2 Bh6=.

7.a5 d6 8.Bd2 c5 9.Qb3 e5 10.Bb4 cb4 11.Qb4 ed4 12.Nd4? Ng4 13.e3 Bd4 14.ed4 Qf6 –+.

2.Bb2 f6

3.a3 b6 4.e3 Bb7 5.Nf3 d5 (5...a5 6.b5+=) 6.d4 Nd7 7.c4 Bg7 (7...c6 8.Bd3+/–) 8.cd5 e5? (better is 8...Bd5!? 9.Nc3 e6+/–) 9.de5 (9.de6 Nf8+–) 9...fe5 10.Bb5 Ne7 (10...Qe7 11.e4+–) 11.Be5 (11.Ne5 Be5 12.Be5 Rf8 13.Bd7 Qd7+–) 11...Be5 (11...0–0 12.Bg7 Kg7+–) 12.Ne5 c6 (12...Bc8 13.Qg4 Nf5 14.Ng6 hg6 15.Qg6 Kf8 16.Qf5 Nf6+–) 13.Nd7 (better is 13.Nc6 Bc6 14.dc6 Nc6 15.Bc6+–) 13...Qd7 (13...cb5!? 14.Nf6 Kf7+/–) 14.dc6+– Bc6 15.Qd7 Bd7 16.Bd7 Kd7 17.Nc3 Rac8 18.Rc1 Rc7 19.Ke2 Rhc8 20.Kd2 Kd6?? 21.Nb5 Kd7 22.Rc7 Rc7 23.Nc7 Kc7 24.Rc1 Kd6 25.b5 Nc8 26.Rc8 Ke7 27.Rc7 Kf8 28.Ra7 Kg8 29.Rb7 Kh8 30.Rb6 h5 31.Rb7 (31.Rb7 Kg8 32.b6 h4 33.Rc7 Kf8 34.b7 Ke8 35.b8Q) 1–0. Fournier,Frederic – santido, Active, 2008.

3.a3 c6 4.e3 d6 5.c4 Bf5 6.Nc3 Nd7 7.d4 d5 (7...e5+/–) 8.Bd3 (8.cd5!? cd5 9.Nd5 Rc8+–) 8...Nb6 (better is 8...Bd3!? 9.Qd3 Nb6 10.cd5 cd5+=) 9.Bf5+/– gf5 10.Qh5 Kd7 11.Qf5 (better is 11.cd5!? cd5 12.e4+/–) 11...e6= 12.Qc2 Nc4 13.Bc1 Ne7 14.Nf3 b5 (14...Kc8!?=) 15.a4 a6 16.0–0 Qb6 (16...Ng6 17.ab5 ab5 18.Ra8 Qa8 19.Nd2+=) 17.a5 (better is 17.e4!?+/–) 17...Qc7+= 18.e4 Bg7 19.g3 Rhg8 20.Re1 Rae8 21.e5 (21.Bf4 Qd8+/–) 21...f5 (21...fe5!? 22.Ne5 Be5 23.de5 Kc8=+) 22.Ng5 h6 23.Nf7 (23.Nh7 Kc8 24.Nf6 Bf6 25.ef6 Ng6 26.Bh6 Qf7=) 23...Ng6 24.Nh6 Rh8? (24...Bh6 25.Bh6 Kc8 26.f4=) 25.Nf7 (better is 25.Nf5!? Reg8 26.Bg5+/–) 25...Rh7 26.Ng5 Rh5? (26...Rhh8 27.h3+=) 27.Qe2?? (better is 27.g4 Rhh8 28.gf5+–) 27...Reh8+= 28.Nf3 (28.Nf7 R8h7 29.h4 Qa7+=) 28...Qd8 29.Kg2 Qg8 30.Rh1 Bh6 31.h4?? (better is 31.Qe1=) 31...Bc1–+ 32.Ng5 Bg5 33.hg5 Rg5 34.Rh2 Nf4 (35.Kh1 Rh2 36.Kh2 Qh7 37.Kg1 Ne2 38.Ne2 Rh5 39.Kf1 Rh1 40.Ng1 Qh3 41.Ke2 Qg4 42.Kf1 Qf3 43.g4 Qg4 44.f4 Rg1 45.Kf2 Qg2#) 0–1. Aliethah – ChessStudent, Live Game Caissa's Web, 2004.

3.a3 d6 4.e4+= a6 5.c4 Nd7 6.f4 (6.Nf3 c5+=) 6...Nb6 (6...e5 7.Nc3=) 7.g4 (7.d4 Bd7+=) 7...Be6 (7...e5 8.f5=) 8.d3 Bh6 (8...Bd7 9.f5=) 9.g5 fg5?? (better 9...Bg7=) 10.Bh8+– g4 (10...gf4 11.Qf3+–) 11.Be2 (11.Ne2 Nf6+–) 11...Qd7 12.Qd2 (12.d4 Bc4 13.Bg4 e6+–) 12...0–0–0 13.Nc3 (13.Bd4 d5 14.Bb6 de4 15.de4 Qd2 16.Nd2 cb6+–) 13...Kb8 (13...Rf8 14.Bd4 Bf4 15.Qc2+–) 14.Bd4 Na4 15.Bd1 (15.Na4 Qa4 16.Be3 Bg7+–) 15...Nc3 16.Bc3 Rf8 17.Ne2 g3 (17...Bf7 18.Qc2 Nf6+–) 18.hg3 Bh3 (18...Rf7 19.Qb2+–) 19.Nd4 (better 19.Ng1!? Bg4 20.Rh6 Nh6+–) 19...Bg4 (19...e5 20.Ne2 Bg4 21.b5 ab5 22.cb5 Be2 23.Be2 (23.Ke2?! Qg4 24.Ke1 Qg3 25.Qf2 Qd3+–) 23...ef4 24.b6+–) 20.a4 (better 20.Bg4!? Qg4 21.Ne2 e5+–) 20...e5 21.Ne2 Bf3 22.Rh2 (better 22.0–0 Be2 23.Qe2 ef4 24.b5+–) 22...Nf6 (22...Be2 23.Be2 ef4+–) 23.Rh6 Nh5 (23...Ng4 24.Rh4+–) 24.Kf2 (better 24.fe5 de5 25.Be5 Qe7+–) 24...Bg4 (24...Qg7 25.f5 gf5 26.Kf3 fe4 27.Kg2+–) 25.f5 (better 25.Ke1 ef4 26.gf4 Qe7+–) 25...gf5 26.Kg2 (better 26.Ke1!? Qg7 27.ef5 Rf5+–) 26...Rg8 (26...Qg7 27.Rh5 Bh5 28.ef5 Rf5 29.Qe3+–) 27.d4 (better 27.c5!? Be2 28.Be2 Ng3+–) 27...f4 28.Kf2 (28.gf4 Be2 Discovered attack) 28...fg3 (28...Qg7 29.Rh5 (29.gf4 Be2 30.Ke2 Nf4 31.Ke3 ed4 32.Bd4 Qh6–/+) 29...Bh5 30.de5 (30.gf4 Qg2 31.Ke1 Qh1 32.Kf2 Rg2 33.Ke3 Qh3 34.Ng3 Qg3 35.Bf3 Qf3) 30...de5 31.Qf4+– (worse 31.gf4 Qg2 32.Ke1 Qh1 33.Kf2 Rg2 34.Ke3 Qh3 35.Ng3 Qg3 36.Bf3 Qf3)) 29.Ng3 (better 29.Kg1!? Qe7 30.de5 de5+–) 29...Bd1? (29...Ng3 30.Qe3 Bd1 31.Rd1 Qg4=+) 30.Nh5 (better 30.Nf5 Bg4 31.Rg1+–) 30...Qf7?? (30...Qh3 31.Ng7 Qf3 32.Ke1 Rg7–+) 31.Nf6+– Bb3 32.c5 (32.de5 Rd8+–) 32...Rd8 (32...Rg6 33.de5 dc5 34.Rah1 Rh6 35.Rh6+–) 33.de5 Qg7 (33...d5 34.Rh7 Qe6 35.b5+–) 34.Rh7 Qg6 35.Rg1 Qg1 36.Kg1 Ba4 37.ed6 Ka7 38.e5 (38.dc7 Rc8 39.Qd8 Bc6 40.Qc8 a5 41.b5 Bb5 42.Qb8 Ka6 43.Qa8) 38...Bb3 39.Rc7 Be6 (39...Rf8 40.c6 Rb8 41.Bd4 Ka8 42.cb7 Rb7 43.Rc8 Rb8 44.Qg2 Bd5 45.Qd5) 40.Bd4 (40.Qg2 Bd5 41.Qd5 Rb8 42.c6 Rd8 43.Qc5 Kb8 44.Rb7 Kc8 45.Rc7 Kb8 46.Qa7) 40...Kb8 (40...Ka8 41.c6 Bf7 42.cb7 Kb8 43.Qe3 Rg8 44.Ng8 Bg8 45.Ba7) 41.c6 (41.Qg2 Bc8 42.c6 b6 43.Rc8 Kc8 44.Qg7 Rd7 45.Qd7 Kb8 46.Qb7) 41...bc6 (41...a5 42.Rb7 Kc8 43.Ba7 Rg8 44.Ng8 Kd8 45.Qg5 Kc8 46.Rc7) 42.Qd3 Bc8 43.Ba7 Ka8 44.Qd4 (44.Qe3 Bf5 45.Qb6 Rg8 46.Ng8 a5 47.Qc6) 44...Bb7 (44...Bh3 45.Qb6 Rg8 46.Ng8 a5 47.Qc6) 45.Qb6 Rb8 (45...Rg8 46.Ng8 c5 47.Qb7) 46.Bb8 Kb8 47.Qb7 1–0. Delboy Smith (1860) – Mphilliber, ChessWorld.net, 2010.

3.a3 e5 4.e3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 g6).

3.a3 Kf7 4.c4 Ke6 (4...a5 5.b5+=) 5.e3 Kf5?? (5...Kf7 6.Nf3+=) 6.h3 (6.Qf3 Kg5 7.Qf4 Kh5 8.Be2) 6...Ke6+/– 7.d4 Kf7 8.Nf3 Bg7 9.Bd3 e6 10.Nbd2 Ne7 11.0–0 Rf8 12.e4 Kg8 13.d5 ed5 14.ed5 c6? 15.dc6 bc6 16.c5 d5 17.cd6! Qd6 18.Bc4 Be6?? 19.Be6 Qe6+/– 20.Qc2 a5 21.Rfe1 Qf7 22.Nd4 ab4 23.ab4 Ra1+= 24.Ba1 Rd8 25.N2f3 f5?? 26.Ne6+– Ba1 27.Nd8 Qe8 28.Ra1 Qd8 29.Qc4 Qd5 30.Qd5 Nd5 31.Ra8 Kf7 32.Rb8 Ke6 33.Kf1 Kd6 34.Ng5 h6 35.Nf7 Kc7 36.Ra8 Nb4 37.Nh6 Nd5 38.Nf7 Kd7 39.Ne5 Kd6 40.Ng6 c5 41.Ra6 Kd7 42.h4 c4 43.Ne5 Ke7 44.Nc4 Nf4 45.g3 Nd5 46.h5 Kf7 47.h6 Kg8 48.Ne5 Kh7 49.Nf3 Ne7 50.Ra7 Kh6+– 51.Re7 f4 52.gf4 Kh5 53.Re5 Kg4 54.Ke2 Kf4 55.Re3 Kf5+– 56.Nd4 Kf4 57.Rf3 Kg4 58.Ke3 Kg5 59.Rf8 Kg6 60.f4 Kg7 61.Rf5 Kg6 62.Ke4 Kg7 63.Ke5 Kg6 64.Rf6 White plans f5 64...Kg7 65.f5 Kg8 66.Ke6 Kg7 67.Rf7 Kg8 68.f6+– Kh8 69.Ke7 Kg8 70.Rg7 Kh8 71.Rg1 Kh7 72.f7 Kh6 73.f8Q Kh7 74.Qg7 1–0. Fournier,Frederic (1775) – Adeimi,Michel (2110), Active, 2007.

3.a3 h5 4.e3 e6 (4...d5 5.c4+=) 5.Be2 Ne7? (5...d5 6.c4+=) 6.c4 (better is 6.Bf6 Rh6 7.d4+–) 6...f5?? (better is 6...Bg7+=) 7.Bh8+– Bg7 8.Bg7 d5 9.cd5 Nd5 10.Nc3 Nc3 11.dc3 Qd1 12.Rd1 Nc6 13.Bh5! gh5 14.Nf3 Ke7 15.Bd4 Nd4 16.cd4 c5 17.dc5 Bd7 18.0–0 Rd8 19.h3 Ba4 20.Rd8 Kd8 21.Nd4 Bc6 22.Nc6 bc6 23.Rd1 Ke7 24.f3 a5 25.e4 ab4 26.ab4 fe4 27.fe4 e5 28.Kf2 h4 29.g3 hg3+– 30.Kg3 Ke6 31.h4 (31.h4 Kf7 32.b5 Kg7 33.bc6 Kh7 34.c7 Kg7 35.Rd7 Kg6 36.c8Q Kh6 37.Qc6 Kh5 38.Rh7; 31.b5 cb5 32.c6 Kf6 33.c7 b4 34.c8Q Kf7 35.Rd7 Kf6 36.Kh4 b3 37.Qc6) 1–0. Fournier,Frederic (1995) – ragno (1620), Active Blind, 2007.

3.a3 Bh6 4.e3+= d6 5.g3 (5.Nf3 e5+=) 5...Nd7 6.Bg2 e5 7.d3 Nb6 (7...Ne7 8.c4=) 8.Nc3 Be6 (better 8...d5!?=) 9.Bb7+– Rb8 10.Bc6 Bd7 11.Bg2 Ne7 12.Qe2 (12.Nf3 0–0+–) 12...Be6 (12...0–0 13.Nf3+–) 13.h4 (13.f4 a5+–) 13...0–0 14.0–0–0 (better 14.f4+–) 14...Nc6?? (14...d5 15.h5 g5 16.Rf1+=) 15.Kb1 (15.Bc6 d5+–) 15...Qc8?? (better 15...Ne7+=) 16.Bc6+– Bg4 17.f3 Bd7 18.b5 (18.Bd7 Qd7 19.h5 g5+–) 18...Re8 (18...Bc6 19.bc6 Qe8+–) 19.Bd7 Qd7 20.a4 (20.h5 g5 21.d4 a6 22.ba6 Bg7+–) 20...c6? (better 20...Na4 21.Na4 Qb5+–) 21.Ne4 (better 21.h5 g5 22.d4+–) 21...cb5 (21...Bg7 22.d4 f5 23.Nf2+–) 22.ab5 (better 22.Nf6 Kg7 23.Nd7 Nd7 24.a5+–) 22...Nd5 (22...Bg7 23.d4 f5 24.Nc5+–) 23.c4 (better 23.d4 Rb5 24.c4 Rb2 25.Qb2+– (25.Kb2 Rb8 26.Kc1 Qa4 27.cd5 Be3 28.Qe3 Qa2 29.Qb3 Rb3 30.Nf6 Kh8 31.de5 Rb1)) 23...Nc7 (23...f5 24.Ng5 Nc7+–) 24.Nf6 Kf7 25.Nd7 Rbd8 26.b6 (26.h5 g5 27.d4 e4+–) 26...ab6 27.Nb6 Na6 28.Nd5 (28.h5 Bg7+–) 28...Nc5 29.Kc2 Rb8 30.e4 (30.h5 Re6+–) 30...Na4 Do you see the mate threat? 31.Ba3 Bf8 32.d4 (32.h5 Nc5 33.hg6 hg6+–) 32...Kg7 33.Nh3 (better 33.Rb1 Rb1 34.Kb1 ed4+–) 33...Rec8 34.Ng5 (34.Rb1 Kh8 35.Rb8 Rb8 36.de5 de5+–) 34...Nb6 35.Nb6 Rb6 36.Ne6 (36.de5 Rbc6 37.ed6 Kg8+–) 36...Kf7 37.Nf8 Kf8 38.de5 Kg8 39.ed6 Kf7 40.e5 Ke6 41.Rd5 (41.Qe4 Kf7 42.e6 Kg7+–) 41...h5 42.Qe4 Rg8 43.Rhd1 (43.Rc5 Rc6 44.Qd5 Kd7 45.Qc6 Ke6 46.Qd5 Kd7 47.e6 Kd8 48.Qa8) 43...Rb7 (43...Rc6 44.Ra5 Kf7 45.Ra7 Kf8 46.Qc6 g5 47.Qc8) 44.c5 (44.Rc5 Rgg7 45.Qd5 Kd7 46.Qc6 Ke6 47.d7 Kf7 48.Qd5 Ke7 49.d8Q) 44...Ra7 (44...g5 45.d7 Rbb8 46.Rd6 Ke7 47.d8Q Rgd8 48.Qh7 Ke8 49.Qg8 Ke7 50.Re6) 45.R1d3 (45.d7 Kf7 46.e6 Kg7 47.Bb2 Kh6 48.Qf4 Kh7 49.Qf7 Kh6 50.Bc1 g5 51.hg5 Rg5 52.Bg5) 45...Raa8 46.c6 White intends d7 (46.R5d4 Ra6 47.Qd5 Kd7 48.Qf7 Kc6 49.Qc7 Kb5 50.Rb4) 46...Kf7 (46...Ra4 47.Qa4 Rf8 48.d7 Rf6 49.d8N Kf5 50.e6) 47.e6 Kg7 48.Kd2 (48.Bb2 Kh6 49.Qf4 Kh7 50.Qf7 Kh6 51.Bc1 g5 52.hg5 Rg5 53.Bg5) 48...Kh7 49.d7 (49.Rh5 Kg7 50.Qe5 Kf8 51.Qf6 Ke8 52.Qe7) 49...Rgf8 (49...Ra4 50.Rh5 Kg7 51.Qe5) 50.Bf8 Rf8 51.Rh5 Kg7 52.Qe5 Kg8 (52...Rf6 53.d8Q gh5 54.Qdf6 Kg8 55.Qf7) 53.Qh8 (53.Rh8) 1–0. Delboy Smith (1750) – Mphilliber, ChessWorld.net, 2015.

3.a4 b6 4.b5 Bb7 5.e3 d6 6.Nf3 e5 7.c4 Nd7 8.d4 Bg7 9.d5 Nc5 10.Nbd2 a6 11.Be2 ab5 12.ab5 Ra1 13.Ba1 Ne7 14.0–0 Nf5 15.e4 Ne7 16.Re1 Kf7 17.Bf1 Bc8 18.Nb3 Nb3 19.Qb3 Bg4 20.h3 Bf3 21.Qf3 Qd7 22.Bc3 Bh6 23.Ra1 Rc8 24.Ra7 Rb8 25.g4 Nc8 26.Bg2?? Na7–+ 27.h4 Bg7 28.Bh3 Qe7 29.g5 Ke8 30.Be6 Nc8 31.h5 Ra8 32.hg6 hg6 33.gf6 Qf6 34.Qh3 Qg5 35.Kh2 Qh5 36.Qh5 gh5 37.Bf5 Bh6 38.Bg6 Kf8 39.Bh5 Bf4 40.Kg2 Ra4 41.Be2 Ra3 42.Be1 Ne7 43.Bh5 Ng8 44.f3 Nf6 45.Bg6 Kg7 46.Bf5 Ra4 47.Bh4 Rc4 48.Bf6 Kf6 49.Bd7 Rc3 50.Kh3 Rf3 51.Kg4 Re3 52.Bf5 Rb3 53.Bd7 Rb4 54.Kf3 Kg5 55.Be8 Kh4 56.Bd7 Rb3 57.Kf2 Bg3 58.Ke2 Kg5 59.Kd2 Kf4 60.Kc2 Re3 61.Bf5 Rf3 62.Bh7 Ke3 63.Bf5 Kd4 64.Bh7 Kc4 65.Bf5 Kb5 66.Bg4 Rf4 67.Bf5 Kc4 68.Bh7 b5 69.Bg6 b4 70.Bh7 Kd4 71.Bf5–+ Rf3 72.Bg4 Re3 73.Bf5 b3 74.Kb2 Rc3 75.Bg6 Kd3 76.Bf5 Kd2 77.Bg4 Rc2 78.Kb3 Bf2 79.Bf5 Bc5 80.Ka4 Rb2 81.Ka5 Ke3 82.Ka6 Rb4 83.Ka5 Re4 84.Be4 Ke4 85.Kb5 Kd5 86.Ka6 e4 (86...e4 87.Kb5 e3 88.Ka6 e2 89.Kb7 e1Q 90.Kc7 Qe7 91.Kc8 Kc6 92.Kb8 Qe8#) 0–1. typ48 – games2012, playok.com, 2011.

3.a4 e5 4.b5 Bg7 5.g3 Ne7 6.Bg2 d5 7.Nc3 Be6 8.e4 d4 9.Nce2 Nd7 10.c3 d3 11.Nc1 Bc4 12.Bf1 Nc5 13.Ba3 Ne4 14.Be7 Ke7 15.Nf3 Qd5 16.Bg2 Ng5?? (better is 16...Nc5–+) 17.0–0= e4 (better is 17...Nf3!? 18.Bf3 Qd6 19.Bb7 Rab8=) 18.Ng5+/– fg5 19.Re1 Kd7 20.Be4 Qd6? 21.Bb7 Raf8 22.Bc6 Kc8 23.Qg4 Be6 24.Qf3 Rf3–+ 25.Kg2 Rf6 26.Re3 Bd5 27.Bd5 Qd5 28.Kf1 Qh1# 0–1. wk1234 – jolarobcio, playok.com, 2012.

3.b5 a5 4.a4 e6 5.e4 Bb4 6.c3 Bc5 7.d4 Bb6 8.Nf3 c6 9.Be2 c5 10.e5 f5 (better is 10...d5!?+/–) 11.0–0 cd4 12.cd4 Bc7 13.d5 ed5 (13...Nh6+–) 14.Qd5 Ne7 15.Qb3 Bb6 (15...Rf8 16.Rd1+–) 16.Nc3 Rg8 (16...d5 17.ed6 Qd6 18.Ng5+–) 17.Nd5 Nd5 18.Qd5 Ra7 (18...Rg7+–) 19.Qg8 Ke7 20.Ba3 d6 21.Bd6 Kd7 22.Qh7 Ke8 23.Qg6 Kd7 24.Ng5 Qh8 25.Qe6 Kd8 26.Qe7 1–0. stoker – Flip4, Live Game Caissa's Web, 2004.

3.b5 a6 4.c4 ab5 5.cb5 d6 6.a4 c6 7.e3 Qb6 (7...d5 8.d4=) 8.Qb3 (better 8.Bc3+=) 8...Bd7? (8...e5 9.d4=) 9.Be2 (9.Bc4!? Nh6 10.bc6 Qc6 11.Bd5+–) 9...Bg7 (9...d5 10.Nf3+=) 10.d4 (10.Bc4 Kf8+=) 10...Nh6 11.h3 (11.Nd2 cb5 12.Ngf3 b4+=) 11...c5 (11...e6 12.Nd2 cb5 13.Ngf3=) 12.Bc4 Bf5 (12...e5 13.Nf3+=) 13.Nd2+– Qd8 14.Bd5 Qc8 (14...Bc8 15.dc5 dc5 16.Ngf3+–) 15.Ngf3 e6 (better 15...Qc7+–) 16.Bc4 (better 16.Nc4!? Bf8 17.Nb6+–) 16...d5+= 17.Be2 c4 18.Qc3 b6 (better 18...g5!?+=) 19.g4+– Be4 (19...Ng4 20.hg4 Bg4 21.e4+–) 20.Ne4 de4 21.Nd2 f5 22.f3 Qb7 (22...Qd8+–) 23.Qc4 (23.Bc4?! ef3 24.Be6 Rf8+–) 23...Kf7 24.g5 Ng8 (24...Rc8 25.Qb3 (25.gh6?! Rc4 26.Nc4 Bf8=) 25...Ng8 26.fe4+–) 25.fe4 Ne7 (25...Qd7 26.ef5 gf5 27.Bh5 Ke7 28.Qb4 Kd8 29.Nc4+–) 26.Bf3 Rc8 (26...Qa7 27.ef5 gf5 28.Rf1+–) 27.Qb3 (27.ef5 Rc4 28.Bb7 Raa4 29.Nc4 Rc4+–) 27...Qd7 (27...fe4 28.Ne4 (worse 28.Be4 Nd5+–) 28...Qd7 29.0–0+–) 28.ef5 Nd5 (28...Ra7 29.f6 Bf6 30.gf6 Nd5+–) 29.fe6 Qe6 30.Bd5 Qd5 31.Qd5 Ke8 32.Qa8 Kd8 33.Qd5 Ke8 34.Qe6 (34.0–0 Nc6 35.bc6 Rc6 36.Qg8 Bf8 37.Rf8 Kd7 38.Qf7 Kd6 39.Ne4) 34...Kd8 35.Qg8 Kc7 (35...Bf8 36.Qf8 Kd7 37.Qf7 Kd8 38.Qd5 Ke8 39.Rf1 Rc3 40.Qe6 Kd8 41.Qd6 Kc8 42.Rf8 Kb7 43.Qb8) 36.Qg7 (36.Rc1 Kd7 37.Qc8 Ke7 38.Rc7 Kd6 39.Ba3 Kd5 40.Qg8) 36...Kd6 (36...Kd8 37.Rf1 Rc1 38.Rc1 Nd7 39.Ba3 h6 40.Qe7) 37.Ba3 Kd5 (37...Rc5 38.dc5 Ke6 39.cb6 Nc6 40.Qf6 Kd7 41.bc6 Kc8 42.Qf8) 38.Qe5 (38.Qf7) 1–0. lindsey000 – vios, gameknot.com, 2017.

3.b5 e6 4.e3 (4.e4 d5+=) 4...a6 (4...d5 5.c4=) 5.a4 d5 6.Nf3 Qd6 (6...e5 7.Be2=) 7.Ba3 Qb6 (7...Qd8 8.Bf8 Kf8 9.Nc3+=) 8.Bf8 (8.a5 Qa7+=) 8...Kf8+= 9.Nc3 (better is 9.a5 Qd6 10.Nc3+=) 9...d4? (better is 9...Kg7!?+=) 10.Nd4 (10.ed4 Qa5+–) 10...e5+/– 11.a5 Qd6 12.Ne4 (better is 12.Nf3+/–) 12...Qd5= 13.Nc3 ab5?? (13...Qd6 14.Nb3 Kg7+/–) 14.Nd5+– Na6 15.Nb5 Be6 16.Ndc7 Nc7 17.Nc7 Re8 18.Ne8 Ke8 19.Bb5 Kf7 20.Qf3 Ne7 21.Qb7 Bd5 22.Qd7 Rb8 23.Rb1 g5 24.0–0 Rb7 25.Qe8 Ke6 26.a6 Bc6 27.Bc6 Ra7 28.Rb6 Rc7 29.Be4 Rc6 30.Rc6# 1–0. tschulz – Arrik, mySchach.de, 2004.

3.b5 g5 4.a4 (4.e4 h5+–) 4...c5 (4...d5 5.e4 de4 6.Qh5 Kd7 7.Nf3+–) 5.c4 (5.e4 Qa5+–) 5...e5 (5...Bg7 6.Nc3+=) 6.g3 (better 6.e4+=) 6...e4? (better 6...d5=) 7.Bg2+– a5 (7...Bg7 8.Be4 Ne7 9.Qc2+–) 8.Be4 Qe7 (8...d6 9.Nc3+–) 9.Bg2 (9.Ra3 Qd6+–) 9...Nh6 10.Nf3 (10.Nc3 Bg7+–) 10...Ng4 (10...g4 11.Nh4+–) 11.0–0 (better 11.Nc3 Ne5 12.Ne5 fe5 13.Nd5+–) 11...Qe4?? (11...Ne5 12.Ne5 fe5 13.Nc3+–) 12.d3 (better 12.Ne5! Qf5 13.e4 Qe5 14.Be5 Ne5+–) 12...Qe7 (12...Qg6 13.h3 Nh6 14.Nc3+–) 13.h3 (13.Ng5 Rg8 14.Ne4 d6+–) 13...Nh6 (13...Ne5 14.Nc3 Bg7 15.Nd5 Nf3 16.Bf3+–) 14.Nbd2 (14.Ng5 Bg7 15.Ne4 Rg8+–) 14...d6? (better 14...g4 15.hg4 Ng4+–) 15.Ng5! Qg7 (15...fg5 16.Bh8 Pinning (16.Bh8 Deflection)) 16.Nge4 Ng8 (16...Be7 17.Nc3+–) 17.Nf3 (17.e3 Qg6+–) 17...Qh6 (17...Be6 18.Qd2+–) 18.Nh4 (better 18.Kh2+–) 18...f5 (18...Be6+–) 19.Bh8 Bg7 (19...fe4 20.de4 Ne7+–) 20.Bg7 Qg7 21.Nd6 Kd8 22.Nc8 (better 22.d4 cd4 23.Nhf5 Bf5 24.Nf5+–) 22...Ne7 (22...Kc8 23.Qd2+–) 23.Ne7 (better 23.Bb7!? Ng6 24.Ba8 Nh4+–) 23...Qe7 24.Bb7! Qb7 25.e4 (25.d4!? Qe4 26.dc5 Ke8+–) 25...f4 (25...fe4 26.de4 Nd7 27.e5+–) 26.Qg4 (26.d4 cd4 27.Qd4 Kc8 28.Qc5 Qc7+–) 26...Nd7 27.Qf4 h5 28.Qg5 Kc7 29.Qd5 (29.Qh5 Rg8+–) 29...Qc8 30.Qc6 Kd8 31.Qc8 Kc8 32.f4 Nf6 33.e5 Nd7 34.Nf5 Nf8 35.Nd6 Kd8 36.f5 Nd7 37.f6 (better 37.Rae1!? Kc7+–) 37...Ne5 38.f7 (38.Rae1!? Kc7 39.Re5 Kd6 40.Rd5 Ke6 41.Rc5 Rg8+–) 38...Ke7 39.f8Q! Rf8 40.Rf8 Kf8 41.b6 Nd3 (41...Nd7 42.b7 Kg7+–) 42.b7 Nb2 43.b8Q Ke7 (43...Kg7 44.Qc7 Kh6 45.Re1 Na4 46.Re6 Kg5 47.Qe7) 44.Re1 Kf6 45.Qf8 (45.Qg8 Nc4 46.Re6) 45...Kg5 (45...Kg6 46.Re6 Kg5 47.Qf6) 46.Re6 (46.Qg7) 46...Na4 (46...Nc4 47.Qf6) 47.Qh6 (47.Qf6) 1–0. tanto – bouffant, net–chess.com, 2002.

3.b5 h5 4.c4 (4.e4 e5+=) 4...d6 (4...e5 5.d4=) 5.e4+= Be6 (5...e5 6.Nf3+=) 6.Nf3 Bh6 7.Bd4 (7.d4 Bg4+–) 7...Nd7 8.Bd3 (8.Be2 Ne5+=) 8...Nb6 (8...Ne5 9.Be5 de5 10.Qc2=) 9.Nc3 (9.Qc2 Bg7+=) 9...Qd7 (9...Nc4 10.Be2 Bf7 11.Nd5=) 10.Nh4 (10.Nd5+=) 10...0–0–0? (better 10...Bf7!?+=) 11.Ng6+– Rh7 12.Qe2 (12.Nd5 Bg7+–) 12...f5. Pekin Dragons – pieeater, ChessWorld.net, 2011.

3.c3 d5 4.d4=.

3.c3 d6 4.e3 Nc6 5.b5 Ne5 6.Nf3 Nf3 7.Qf3 Qd7 8.Bc4 c6 9.a4 d5 10.bc6 bc6 11.Bd3 Qb7 (11...e5!? 12.Bc2 e4=+) 12.Ba3= h5? (12...e5 13.e4=) 13.0–0 (13.Bg6!? Kd8 14.Bh5 Rb8+–) 13...Bg4 (13...Rh6!?+=) 14.Bg6+– Kd8 15.Qg3 Rh6 16.Bf7 e5? (better 16...Rh8!?+–) 17.Bf8 (17.Bg8!? Ba3 18.Na3 Qd7+–) 17...Qf7 18.Bh6 Nh6 19.f3 Nf5? (19...Bf5+–) 20.Qf2 Bf3 (20...Bh3 21.gh3 Ne7 22.Na3+–) 21.Qf3 Nh4 (21...Nd6 22.Qf6 Qf6 23.Rf6+–) 22.Qf6 (22.Qf2!? Ng2 23.Kg2 Ke7+–) 22...Qf6 23.Rf6 Ke7 (23...Kc7 24.g3 Rg8 25.Rf7 Kb6 26.d4+–) 24.Rf2 (24.Rh6!? Rg8 25.Rh7 Ke6+–) 24...Ke6 25.Na3 Rg8 26.Raf1 Kd6 (26...e4 27.Nc2 c5 28.Rf6 Kd7 29.Rf7 Ke8 30.Ra7 Rg2 31.Kh1+–) 27.d4 ed4 (27...a6 28.Rf6 Kc7 29.R1f2 ed4 30.ed4+–) 28.ed4 c5 (28...a6 29.Nc2+–) 29.g3 Ng6 (29...cd4 30.cd4 Ng6 31.Nb5 Kd7 32.Rf7 Ne7 33.Re1+–) 30.Nb5 Kc6 (30...Kd7 31.Rf7 Ne7 32.Re1+–) 31.Rf6 (31.Rf7 Ne7 32.Re7 Rg6 33.Rc7 Kb6 34.dc5 Ka5 35.Ra7 Ra6 36.Ra6 Ka6 37.Rf7 d4 38.Ra7) 31...Kb7 (31...Kd7 32.Rd6 Ke7 33.dc5+–) 32.Nd6 (better 32.Rf7 Kb8 33.Na7+–) 32...Ka6 (32...Kb8 33.dc5 Ne5 34.R6f5+–) 33.Nc4 (33.Rb1 Rf8 34.Nb7 Rf6 35.Nc5 Ka5 36.Rb5) 33...Kb7+– 34.Na5 Ka8 (34...Kc8 35.Nc6 Rg7+–) 35.dc5 h4 36.g4 (36.Rg6 Re8 37.Rg7 Rd8 38.Nc6 Rd7 39.Rd7 hg3 40.Ra7) 36...Ne5 37.Rf8 Rf8 38.Rf8 1–0. GuestFWPX – wsim, freechess.org, 2017.

3.c3 Kf7 4.e3 Nh6 5.Nf3 Bg7 (5...e5 6.Be2=) 6.d4 Rf8 7.Bd3 Kg8 8.Qc2 (8.h4 e6+=) 8...Rf7 (8...d5 9.c4 Nc6 10.Ba3+=) 9.Nbd2 (9.h4 Bh8+/–) 9...Kh8 (9...d5 10.c4 Nc6 11.a3+/–) 10.0–0 Ng8 (10...d5 11.c4+/–) 11.a4 Qf8?? (11...d5 12.e4+/–) 12.Rfe1 (better is 12.Bg6 d5 13.Bf7 Qf7 14.e4+–) 12...Bh6 13.e4 Qg7 14.e5 fe5 15.Ne5 Rf6 16.Nef3 d6 17.Ne4 Nc6? 18.Nf6+– ef6 19.b5 Bf5 20.Bf5 gf5 21.bc6 bc6 22.Ba3 Qg5 23.Ng5 Bg5 24.g3 Rb8 25.Re2 a5 26.Rae1 c5 27.dc5 dc5 28.Bc5 Ne7 29.Be7 Rb6 30.Bb4! ab4 31.cb4 c5 32.bc5 Rc6 33.Re8 (33.Re8 Kg7 34.R1e7 Kg6 35.Rg8 Kh6 36.Qf5 Rc5 37.Qh7) 1–0. Fournier,Frederic (1850) – yuyo6, Active blind, 2011.

3.Nc3 b6 4.e4+= Bb7 (4...e5 5.a3+=) 5.Bc4 (5.a3 e5+=) 5...e6 6.a3 Ne7 7.Nf3 Bh6 8.0–0 Nbc6 (8...0–0 9.Qe2+=) 9.d4+/– 0–0 (9...d5 10.Bb3+/–) 10.d5 ed5? (better is 10...Ne5 11.Ne5 fe5 12.de6 d6+/–) 11.ed5+– (11.Nd5 Nd5 12.Bd5 Kh8+/–) 11...Ne5 12.Ne5 fe5 13.d6 Kh8 14.de7 Qe7 15.Nd5 Qg5 (15...Qd6+–) 16.f4 Qd8 17.Be5 Kg8 (17...Bg7 18.Bg7 Kg7 19.Qd4 Rf6 20.Nf6 Qf6 21.Qd7 Kh8 22.Qc7 Qd4 23.Kh1 Qg7 24.Qg7 Kg7+–) 18.Ne7# 1–0. Wall,Bill – Guest2158, internet, 2003.

3.Nc3 d5!?=.

3.Nc3 e5!?=.

3.c4 Na6 4.b5+= Nc5 5.e3 c6 (5...e5 6.Nc3+=) 6.a4 (6.d4 Ne4+=) 6...Bg7 7.d4 Ne6 (7...Ne4 8.Bd3 d5 9.Ne2+=) 8.Nf3+– Qa5 9.Bc3 Qb6 10.c5 Qc7 11.Bc4 cb5 (11...d5!? 12.cd6! ed6 13.bc6 bc6+=) 12.ab5+– (worse 12.Bb5 Rb8+–) 12...a6 (12...b6 13.Qa4+–) 13.0–0 d5 (13...d6 14.Qb3 Kf7+–) 14.Bd5 Qd7 (14...Nd8 15.Nbd2+–) 15.Qb3 Nh6 (15...Nc7 16.Bc4 Kf8+–) 16.c6 bc6 (16...Qc7 17.b6 Qd6 18.cb7 Bb7 19.Bb7 Rb8 20.Qa4 Kf7 21.Qa6 Nd8 22.Qc4 e6 23.Qc7 Qc7 24.bc7 Nb7 25.cb8R Rb8+–) 17.Bc6 Nc7 18.Bd7 Bd7 19.ba6 Nf5 (19...Bc6 20.Qc4 Kd7 21.Ba5+–) 20.Qb7 Rc8 21.a7 (better 21.Bb4 0–0+–) 21...Nd6 (21...Na8 22.Bb4+–) 22.Qc7! Rc7 23.a8Q Rc8 (23...Kf7 24.Qa2 Be6 25.d5+–) 24.Qa2 Ne4 25.Bb4 g5 26.Qd5 g4 27.Qe4 gf3 28.Qe7 1–0. GuestDRTL – GuestTHLV, freechess.org, 2017.

3.c4 b5 4.cb5+– Bb7 5.e3 Nc6?? (better 5...Nh6+–) 6.bc6+– Bc6 7.b5 Be4 (7...Bb7 8.Nf3+–) 8.Nc3 Bf5 (8...Bb7 9.Nf3+–) 9.Nf3 Bh6 (9...e6 10.Be2+–) 10.Bc4 (10.Nd4!? Be6 11.Ne6 de6+–) 10...e5 11.Qb3 Be6 (11...Ne7+–) 12.Be6 de6 13.Qe6 Kf8 14.Ba3 Ne7 (14...Kg7+–) 15.Qf6 Kg8 16.Ne5 Qf8 17.Qe6 Kg7 18.Be7 (18.Ne4!? Be3 19.fe3 Re8+–) 18...Qf7 ½–½. GuestKDQB – GuestBJLZ, freechess.org, 2018.

3.c4 d6 4.e3 Bg7 5.d4 e5 6.de5 (6.Be2 ed4 7.ed4 d5+=) 6...fe5 7.Nf3 Ne7 8.Nbd2 0–0 9.Be2 Nf5 (9...e4 10.Bg7 ef3 11.Bf8 fe2 12.Qe2 Qf8 13.0–0+=) 10.–0 e4 11.Bg7 Kg7 (better is 11...ef3 12.Bf8 fe2 13.Qe2 Qf8=) 12.Ne4+/– c6 (12...Nc6 13.Qd3+/–) 13.Nd4 Qe7 (13...Qb6+–) 14.Nf5 Rf5 (14...Bf5 15.Qd4 Kg8 16.Nd6+–) 15.Nd6 (15.Nd6 Rf8 16.Qd4 Qf6 17.Rfd1+–) 1–0. Fournier,Frederic – panque, Active, 2009.

3.c4 h6 4.e3 c6? (4...e5 5.a3+=) 5.Nf3 (5.Bd3 Qb6 6.Bg6 Kd8+–) 5...Bg7 (5...e5 6.Qc2 Kf7 7.Be5 Bb4 8.Bd4+–) 6.c5 (6.Nh4 h5 7.Ng6 Rh6+–) 6...b5? (better 6...e6!?+–) 7.Nh4+– Rh7?? (better 7...h5 8.Ng6 Rh6+–) 8.Qg4 (8.Ng6?! f5 9.Ne5 Be5 10.Qh5 Rf7 11.Be5 d6+–) 8...g5 (8...Bf8 9.Qg6 Rf7+–) 9.Qh5 Kf8 10.Ng6 Kf7 11.Ne5 Ke6 12.Qf7 Kf5 13.Bd3 1–0. DEFFM – GuestNHSW, freechess.org, 2018.

3.d3 e5 4.a3=.

3.d3 Bg7 4.Nf3 (--> 3.Nf3 Bg7 4.d3).

3.d4 a6 4.Nf3 Bg7 5.e3 d5 6.c4 c6 (6...e6!?+/–) 7.Nc3+– b6 (7...e6 8.h4+/–) 8.a4 e6 9.Qb3 Ne7 10.Bd3 Nd7 11.0–0 Bb7 12.e4 0–0 13.ed5 cd5 13...ed5!? 14.Rfe1+–) 14.Rfe1 f5 (14...Kf7+–) 15.Re6 a5 (15...Nf6 16.c5 bc5 17.dc5 Ne4+–) 16.cd5 Nf6 (16...Kh8 17.Ba3 Nd5 18.Nd5 Nc5 19.bc5 Bd5 20.Qb6 Be6 21.Qe6 Re8+–) 17.Re7! Qe7 (17...Bd5 18.Nd5 Nd5 19.Rb7+–) 18.d6 Qf7 19.Bc4 Nd5 (19...Bf3 20.gf3 Qc4 21.Qc4 Kh8 22.ba5 Rfc8+–) 20.Nd5 Kh8 21.Ne5 Be5 22.de5 Qg7 23.e6 Qb2 24.Qb2 Kg8 (24...Rf6 25.Qf6 Kg8 26.Ne7) 25.Ne7 1–0. pcmvr (2830) – samantho (1920), net–chess.com, 2014.

3.d4 Nc6 4.b5 Nb4 5.e4 d5 6.a3 1–0. Wall,Bill – Yabadagig, Microsoft Gaming Zone, 2000.

3.d4 d6 4.d5 c6 5.c4 e6 6.Nc3 cd5 (6...e5 7.e4+=) 7.cd5 Na6 (7...a5 8.ba5 Qa5 9.e4+=) 8.a3 Ne7 9.e4 f5 (9...Bg7 10.Bb5 Kf7 11.Bc4+–) 10.Bb5 (better 10.de6 Bg7 11.Bb5 Kf8 12.Ba6 ba6 13.Qb3+–) 10...Bd7?? (better 10...Kf7+–) 11.a4 (better 11.de6 Bc6 12.Nd5 Nd5 13.Qd5+– (13.Bh8?! Ndb4 14.Bf1 Qa5+–; worse 13.ed5 Bb5 14.Bh8 Qg5+–)) 11...Rg8 (11...e5 12.Ba6 ba6 13.Rb1+=) 12.Bd7 (12.de6!? Bb5 13.Nb5+–) 12...Qd7+= 13.b5 (13.Qb3!? Nc7 14.de6 Qe6 15.Qe6 Ne6 16.Nge2=) 13...Nc5= 14.ef5 Nf5 (better 14...gf5!? 15.Kf1 Bg7 16.de6 Qe6=+) 15.Nf3+= Qe7 (15...e5 16.0–0+=) 16.0–0+– e5 17.Ba3 b6 18.a5 ba5 (18...Bg7!? 19.Re1 Rf8+–) 19.Bc5+– dc5 20.Ne5! Qe5? (better 20...Ne3 21.fe3 Qe5+–) 21.Re1 A pinning theme 21...Bd6 (21...Qe7 22.Re7 Be7 23.Ra5+–) 22.f4 (better 22.Re5 Be5 23.Qe2 0–0–0 24.Qe5 Rge8+–) 22...Qe3 (22...Qe1 23.Qe1 Kf8 24.Qe6 Bf4 25.Rf1+–) 23.Kh1 (better 23.Re3!? Ne3 24.Qe2 Bf4+–) 23...Bf4 24.Re3 (24.Qf3 Kd8 25.Re3 Be3+–) 24...Ne3 25.Qe2 (25.Qa4!? Rf8+–) 25...Kd7 26.Qg4?? (better 26.Qf3 Raf8 27.Qh3 Kd8 28.Ne4+– (28.Ra5 Be5 29.Ra1 Bc3=; worse 28.Qh7 Rh8 29.Qg6 Bh2 30.Qg5 Kc8 31.Qe3 Be5 32.Kg1 Bd4 33.Qd4 cd4–+)) 26...Nf5 (better 26...Ng4 27.Ne4 c4–+) 27.Qf4+– Rgf8 28.Qh6 (better 28.Ne4 Rac8 29.g4+–) 28…Rf7 (better 28...Nh6 29.h3 a6–+) ½–½. aravind555 – Ingvar101010, lichess.org, 2019.

3.e3 a5 4.b5 c6 5.c4 cb5 6.cb5 a4 7.a3 e5 8.d4 e4 (8...d6 9.Nc3+–) 9.d5+– Bg7 (9...d6 10.Nd2+–) 10.Nd2 (better 10.d6 Nh6 11.Nd2+–) 10...Qe7?? (10...d6 11.Ne2 Nh6+–) 11.Rc1 Kd8 (11...Nc6 12.dc6 dc6 13.bc6 bc6 14.Rc6 Nh6+–) 12.Nc4 Qc5 (12...d6 13.Nb6 Nd7 14.Na8 f5+–) 13.Bd4 Qe7 (13...Qb5 14.Bb6 Ke7 15.Qd4+–) 14.Nb6 Nc6 15.dc6 bc6 16.Na8 Qa3 17.Bb6 Ke8 18.Nc7 Kf7 19.Bc5 Qb2 20.Bc4 (20.Bc4 d5 21.Qd5 cd5 22.Bd5 Be6 23.Be6; 20.Qd7 Bd7 21.Bc4 Be6 22.Be6) 1–0. Leonco – Rafaello, internet corr, 2018.

3.e3 c6 4.Qf3 d6 (4...e5 5.a3=) 5.Nc3 h5 (5...e5 6.b5=) 6.Bd3+= f5 7.Nb5 (better 7.e4+=) 7...cb5?? (better 7...e5 8.Nc3 Be6=) 8.Bb5 Bd7 9.Qb7?? (better 9.Bd7 Qd7 10.Bh8+–) 9...Nc6?? (better 9...e5 10.Qa8 Bb5 11.Qa7 Ne7+–) 10.Bc6+– Rb8 (10...Rc8 11.Bd7 Qd7 12.Qd7 Kd7 13.Bh8 e5+–) 11.Bd7 (11.Bh8?! Rb7 12.Bb7 Qb8+–) 11...Kf7 12.Qd5 (12.Bh8?! Rb7 13.Ba4 Rb4 14.Bb3 e6+=) 12...e6 13.Qe6 (13.Bh8?! ed5 14.Ba4 Qg5+–) 1–0. MARYMARY – Rincewind2002, ChessWorld.net, 2019.

3.e3 h5 4.h4 (4.d4 d5+=) 4...d6 (4...e5 5.a3=) 5.c3 (5.Bd3 Rh6=) 5...e5= 6.Bc4 (6.d4 Bf5=) 6...Ne7 7.Qa4 c6 8.b5 (8.Be2 d5=+) 8...Bd7 9.Bb3 (9.bc6 Bc6 10.Bb5=+) 9...c5 (9...cb5!? 10.Qa3 Qc7–+) 10.a3 (better 10.e4=) 10...a6–/+ 11.Qc4 Do you see the mate threat? 11...Bb5 (better 11...Rh7–/+) 12.Qf7+= Kd7 13.Be6 (13.Qf6 Bh6 14.Bf7 Bd3=) 13...Kc7= 14.c4 Be8?? (better 14...Bc6=+) 15.Qf6+– Rh7 16.Qf8 g5 (16...Bd7 17.Qd8 Kd8 18.Bd7 Kd7 19.Nf3+–) 17.hg5 Nbc6 (17...Nd7 18.Qf3+–) 18.Nc3 Ng6 (18...Bg6 19.Qf6+–) 19.Nd5 Kb8 20.Qg8 (20.Qf6 Nge7+–) 20...Rh8 21.Qg7 Rf8 (21...Ra7 22.Bf5 b5 23.Qf6+–) 22.Nf3 (better 22.Nf6+–) 22...Nf4 (22...Ra7 23.Rh5 b6+–) 23.Qf8 (better 23.ef4 Rf4 24.Nf4 ef4+–) 23...Nd3 (23...Ne6 24.Qh6 Nc7 25.Nf6+–) 24.Ke2 Nb2 25.Rab1 (better 25.Ra2!? Bg6 26.Qd8 Nd8 27.Rb2 Ne6+–) 25...Nc4 26.Nb6 (better 26.Nf6 Na3 27.Rb3+–) 26...Nb6 27.Rhc1 (27.Rb6!? e4 28.Rhb1 Nb4+–) 27...Ne7 (27...Nb4 28.Qf5 Bb5 29.Kd1 Nd3 30.Rb5 Nf2 31.Ke1 ab5 32.Kf2 h4+–) 28.Rb6?? (better 28.d3 Ka7 29.Qh6+–) 28...Bb5=+ 29.d3?? (better 29.Rb5 Qf8 30.Rb6=+) 29...Qf8–+ 30.Rd6 Nf5 (30...Kc7 31.Rd5 Nd5 32.Bd5–+) 31.Bf5? (31.Rd5 Ng7 32.Bd7–+) 31...Ka7 (better 31...Qd6 32.Rc2 Kc7–+) 32.Rf6+– Qd8 (better 32...Qg8 33.Be6 Qg7+–) 33.Ne5?? (33.Rc5 Qa5 34.Re5 Qc3+–) 33...c4?? (better 33...Qd5 34.a4 Ba4+=) 34.dc4 Bc6 (34...Be8 35.f4 Qa5 36.Rb1 Qa3 37.Rh6+–) 35.Rf7 Bg2 36.Nc6 (better 36.f4 Qb6 37.Rb1+–) 36...Kb6?? (better 36...Bc6 37.g6 Qd6–+) 37.Nd8+– Rd8 38.Rf6 (38.g6 h4 39.g7 Rg8+–) 38...Ka7 39.Rf7 (39.Rg1 Bc6 40.g6 Ba4+–) 39...Rd6?? (39...Kb6 40.g6 h4+–) 40.e4 Rb6 41.f3 (better 41.g6 Rg6 42.Bg6 Kb6+–) 41...Rb2 42.Ke3 Rb3 43.Kf4 Rf3 44.Ke5 Ra3 45.Bc8 (45.Rb1 Ra5 46.Kd6 Rb5 47.cb5 Bf3 48.b6 Kb8 49.Rf8) 45...Re3 (45...Ra5 46.c5 Be4 47.Ke4+–) 46.Rb7 (46.Bb7!? Rb3+–) 46...Ka8 47.Ra1 Re4 48.Kf5 Rc4 49.Ra6 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.e4 a5 4.b5 e5 5.Bc4 Ne7 6.c3 (better is 6.d4!? Bg7 7.de5 fe5 8.Nf3+/–) 6...d5= 7.ed5 Nf5 (7...Nd5!? 8.d4 Nb6=) 8.Nf3 Bd6 (8...Nd7 9.d4 Nb6 10.Bd3 Nd5 11.0–0+=) 9.0–0+/– Nh6 10.d4 e4 11.Qe2 Bg4 (11...f5!?+–) 12.Qe4 Kf7 13.Ne5 Be5? (13...fe5 14.de5 Re8 15.Qf4 Kg7 16.ed6 Qd6 17.Qd6 cd6+–) 14.de5 Bf5 (14...Kg7 15.Bc1 Bf5 16.Bh6 Kh6 17.Qf4 Kg7 18.ef6 Qf6 19.Qc7 Nd7 20.Qb7+–) 15.d6 Kg7 16.Qb7 (16.Qb7 Nd7 17.dc7+–) 1–0. Wall,Bill – McTrick, FICS, 2011.

3.e4 d5 4.ed5 Qd5 5.Nc3 Qd6 (5...Qe6 6.Qe2+=) 6.a3 Bg7 (6...e5 7.Qf3+=) 7.Nf3 e5 8.Bc4 Ne7 (8...Bf5 9.d4 Nd7 10.Qe2+=) 9.d4+/– Be6 (9...Bg4!?+/–) 10.Nb5 Qb6 (10...Qd7 11.Nc7! Qc7 12.Be6+/–) 11.Be6+– Qe6?? (better is 11...Qb5 12.de5 fe5+/–) 12.Nc7 (12.Nc7 Kf7 13.Ne6 Ke6 14.de5+–) 1–0. pierre – LurZa_boY, internet, 2008.

3.e4 e5 (--> 1.b4 e5 2.Bb2 f6 3.e4 g6).

3.Nf3 b5 4.e3 a6 5.c4 (5.a4 ba4 6.Ra4 d5+=) 5...Nc6 (5...bc4 6.Bc4 d5 7.Be2+=) 6.a3 Nh6 (better is 6...bc4!? 7.Bc4 d5+=) 7.cb5+– ab5 8.Bb5 Na7 9.Bc4 Nf5 (9...d5 10.Bb3+–) 10.0–0 Nd6 11.Bb3 Ba6 12.Re1 Ne4? (12...Bg7 13.d4+–) 13.d3 (better is 13.Bd5 Nd6 14.Ba8 Qa8+–) 13...Nd6 14.Nc3 h6 (14...e6 15.Na4+–) 15.Rc1 (15.Nh4 e6 16.Ng6 Rg8+–) 15...Rc8? (15...e6 16.Nh4 Rg8 17.Nd5 ed5 18.Bd5+–) 16.e4 (better is 16.Nh4 e6 17.Ng6 Rg8+–) 16...f5 (16...Bg7 17.Nh4 e6 18.Ng6+–) 17.Nb5!! Bb5 (17...Ndb5 18.Bh8) 18.Bh8 Nf7 (18...e6 19.ef5 Nf5 20.d4+–) 19.Bf7 (19.Bd4 Nc6 20.Bf7 Kf7 21.ef5 Qe8 22.Qb3 e6 23.Rc6 Bc6 24.fe6 de6 25.Ne5 Ke7 26.Bc5 Kd8 27.Bf8 Bd5 28.Bh6 Bb3 29.Bg5 Qe7 30.Nc6 Ke8 31.Ne7 Ra8+–) 19...Kf7 20.ef5 gf5 21.Ne5 (21.Bd4!? c5 22.Bc5 Rc5 23.Rc5 e6 24.Ne5 Kg8+–) 21...Ke8 (21...Kg8 22.Qh5 Qe8 23.Qe8 Re8 24.Rc7 Ra8+–) 22.Qh5# 1–0. Trkn – Tim, itsyourturn.com, 2000.

3.Nf3 b6 4.e4+= e5 5.a3 Bb7 6.Nc3 a6 7.Bc4 Ne7 8.0–0 d5 9.ed5 Nd5 10.Nd5 Bd5 11.Bd5 Qd5 12.d3 (12.Re1 Bd6+/–) 12...h5 (12...c5!? 13.Re1 Nc6 14.bc5 bc5+= (< 14...Bc5 15.d4+/–)) 13.Re1 Nc6 14.Qe2 (14.d4 e4+/–) 14...0–0–0 (better is 14...g5+/–) 15.c4?? (better is 15.d4 ed4 16.Qa6 Kb8 17.Rad1+/–) 15...Qd3–/+ 16.Qd3 Rd3 17.Rad1 Rd1 (18.Rd1 Bh6–/+) 0–1. FatMaHa – Pawno Paul, ChessWorld.net, 2005.

3.Nf3 c6 4.e4 d6 5.Bc4 e5 6.Ng5?? (better is 6.Nc3+=) 6...fg5–+ 7.h4 (7.0–0–+) 7...gh4 8.Qf3 Qf6 9.Qf6 Nf6 10.Rh4 g5 11.Rh1 Ne4 12.Be2 Bf5 13.Bh5 Ke7 14.g4 (14.c4 a5 15.d4 ab4 16.de5 de5 17.Be5 Nf6–+) 14...Be6 15.d3 Nf6 16.f3 Nh5 17.Rh5 h6 18.Kf2 Nd7 19.Nd2 Bg7 20.Rb1 (20.Ne4 Raf8 21.Ke2 Nf6–+) 20...Ba2 21.Re1 Raf8 (better is 21...Nf6 22.Rh2–+) 22.c4 Nf6 23.Rhh1 Nd7 (better is 23...e4 24.Kg2 Kf7 25.de4–+) 24.Ra1?? (24.Rh5 a5 25.Ra1–+) 24...Bc4–+ 25.dc4 a6 26.Ne4 Rf4 27.Rhd1 Rhf8 28.Kg2 Rf3 29.Rf1 (29.Bc1–+) 29...Rf1 30.Rf1 Rf1 31.Kf1 Ke6 32.Kf2 d5 33.cd5 cd5 34.Nc5 (34.Ng3 Nf6–+) 34...Nc5 35.bc5 d4 36.Ke2 Kd5 37.Kd3 (37.Ba3 e4 38.Kd1 d3–+) 37...Kc5 38.Ba3 Kd5 39.Bb4 b6 40.Bd2 a5 41.Be1 (41.Kc2 Ke4–+) 41...a4 42.Bb4 b5 43.Ba3 (43.Kc2 e4 44.Bd2 e3 45.Be3 de3–+) 43...Bf6 (better is 43...e4 44.Kd2 d3 45.Be7–+) 44.Bb4 Bd8 45.Bf8 (45.Kc2–+) 45...e4 46.Kc2 Kc4 47.Bh6 b4 (47...e3 48.Kb2 e2 49.Bf8 e1Q 50.Ba3 Qe2 51.Kb1 Qd1 52.Kb2 d3 53.Be7 Qc2 54.Ka1 Kb3 55.Bd8 Qc1) 48.Bg7 e3 49.Be5 a3 50.Bg3 b3 (50...a2 51.Kb2 b3 52.Bc7 e2 53.Bg3 Ba5 54.Be1 Bc3 55.Bc3 dc3 56.Kc1 e1Q) 51.Kb1 (51.Kd1 d3 52.Ke1 b2 53.Kf1 b1Q 54.Kg2 d2 55.Bf2 Qe4 56.Kh2 ef2 57.Kh3 f1Q 58.Kh2 Bc7) 51...d3 52.Kc1 (52.Bd6 a2 53.Kb2 Bf6 54.Be5 Be5 55.Kc1 a1Q) 52...a2 (52...d2 53.Kd1 Kd3 54.Be5 e2) 53.Kb2 (53.Be5 d2 54.Kb2 d1Q 55.Ka3 a1Q 56.Ba1 Qa1) 53...d2 (53...d2 54.Be5 d1Q 55.Ka3 a1Q 56.Ba1 Qa1; 53...Bf6 54.Be5 Be5 55.Kc1 a1Q) 0–1. Aliethah – ChessStudent, Live Game Caissa's Web, 2004.

3.Nf3 e6 4.g3 Bb4 5.Bg2 Bf8 6.0–0 c6 7.d3 Qb6 8.Qc1 Bh6 9.e3 Na6 10.Nbd2 Ne7 11.Bf6 Rf8 12.Bd4 Qb5 13.c4 Qa5 14.Bc3 Qb6 15.Rb1 Qc7 16.Qb2 Nc5 17.Qc2 b6 18.d4 Na6 19.Nb3 1–0. linakip – 7beer, playok.com, 2011.

3.f4 e5 4.fe5 Bg7 (4...Bb4 5.Nf3=) 5.ef6+= Bf6 6.Nc3 c6 (6...d5 7.e3+=) 7.Nf3 d5 8.a3 b5 (8...Qe7 9.Qc1+=) 9.e3 Ne7 (9...a5 10.Be2+/–) 10.Bd3 (better is 10.a4+/–) 10...g5? (better is 10...0–0+/–) 11.Ng5!!+– Bg5 12.Qh5 Kf8 (12...Kd7 13.Qg5 Qg8+–) 13.Qg5 (13...Rg8 14.Qh5+–; 13.0–0 Bf5 14.Nb5 Qe8 15.Qg5 Qg6 16.Rf5 Nf5 17.Qd8 Qe8 18.Qf6 Qf7 19.Qh8 Ke7+–) 1–0. Wall,Bill – Midnight, Internet, 2003.

3.f4 Bg7 4.Nf3 e6 5.e3 Ne7 6.c4 b6 7.b5 (7.Be2!?+=) 7...Bb7 8.a4 0–0 (8...a6 9.Be2=) 9.d4 (9.Be2 a6=) 9...d6 (9...a6 10.Bd3=) 10.Bd3 (10.Be2 a6=) 10...Nd7 (10...c5 11.0–0=) 11.Nc3 e5 (11...f5 12.Ng5 Rf6 13.e4 fe4 14.Nce4 Be4 15.Be4=) 12.0–0+= a6 (12...ed4 13.Nd4 Nc5 14.f5+=) 13.Qb3 Kh8 14.Be4 Be4 15.Ne4 a5 (15...Qe8 16.fe5 fe5 17.de5 Ne5 18.Ne5 Be5 19.Rf8 Qf8 20.Be5 de5 21.Rf1+–) 16.fe5+– fe5 (16...de5 17.Rad1 Qe8 18.de5 fe5 19.Qd3+–) 17.Neg5+– Rf6 (17...Qb8!?+–) 18.Ne5! Rf1 (18...de5 19.Nf7 Double attack) 19.Rf1 Ne5 (19...Qe8 20.Nef7 Kg8 21.Ne6+–) 20.de5 Qc8 (20...Qe8 21.ed6 Nf5 22.Bg7 Kg7+–) 21.ed6 Nf5 22.Nf7 Kg8 23.c5! Qf8 (23...bc5 24.d7 Passed pawn) 24.Ng5 Kh8 25.Ne6 Qf7 26.Bg7 (26.Bg7 Kg8 27.dc7 bc5 28.b6+–) 1–0. Janek – AxelG, internet, 2017.

3.g3 e5 4.Bg2 Bg7 5.a3 Nh6 6.d3 Qe7 7.Nd2 Nc6 (7...c6 8.c4=) 8.c4+= Nf7 9.Ngf3 Nd6 (9...0–0 10.0–0+=) 10.b5 Nb8 11.a4 a6 12.0–0 0–0 13.Qc2 (13.b6 cb6 14.Qb3 Nf7+=) 13...h6 (13...Nf7 14.d4+=) 14.d4 e4 (14...Kh7 15.Nh4 f5 16.de5 Be5 17.Be5 Qe5 18.c5+–) 15.Nh4 Kh7 16.Ne4 Ne4 17.Be4 f5 18.Bg2 ab5 (18...Re8 19.e3+–) 19.ab5 Ra1 20.Ra1 c6? (20...d6 21.e4+–) 21.b6 (better 21.Ra8 d6 22.Rb8+–) 21...Na6 22.e3 d6 23.Bf1 Qd8 24.c5 Nb4 25.Qb3 dc5 26.dc5 Nd5 27.Bg7 Kg7 28.Rd1 Qe7 29.Bg2 Qc5 (29...Nf6 30.Qc3+–) 30.Bd5+– cd5 31.Rd5 (31.Qb2 Kh7 32.Rc1 Qd6+–) 31...Qc6 32.Rd4 Be6 33.Qb2 Kh7 (33...Rf6 34.Rd1+–) 34.Ng2 (34.Qa3 Re8 35.Qd6 Qd6 36.Rd6 Kg7+–) 34...Rc8 35.Nf4 Bf7 36.Nd5?? (better 36.Nd3+–) 36…Bd5–+ (36...Bd5 37.Rd1 Bf3–+) 0–1. JUANKARODA (1800) – rufush1234 (1830), lichess.org, 2020.

3.g3 e6 4.Bg2 h6 5.a3 d6 6.d3 c6 7.Nd2 b6 8.Ngf3 a6 9.c4 f5?? (better is 9...Bg7+=) 10.Bh8+– g5 11.0–0 h5 12.Bc3 e5 13.e4 Qd7 14.ef5 Qf5 15.Nb3 1–0. linakip – andreimecea, playok.com, 2011.

3.g3 Nh6 4.Bg2 Bg7 5.d3 c6 6.Nd2 b6 (6...0–0 7.Ngf3=) 7.a3 Bb7 8.c4 Na6 9.Qb3 0–0 10.b5 (10.Ngf3 d5+=) 10...Nc5= 11.Qa2 e6 12.a4 d6?? (better 12...a6 13.Qb1 ab5 14.ab5 cb5 15.Bb7 Nb7=+) 13.bc6+– (13.Bc6?! Bc6 14.bc6 Qc7=) 13...Ba6 14.Nb3?? (better 14.d4+–) 14...Rc8 15.Nc5 (15.Nh3 Nf7+–) 15...dc5 (better 15...bc5 16.a5 Nf7+–) 16.e3?? (16.a5!?+–) 16...Nf7 (16...Qd3 17.Rd1 Qc4 18.Qa3–/+) 17.Ne2 (17.Qb3+=) 17...Qc7?? (better 17...Qd3 18.Nf4 Qc4=) 18.Nf4+– Nd8 19.0–0 (19.a5 Rb8+–) 19...Re8 (19...Qd6+–) 20.d4 (20.a5!? b5 21.cb5 Bb5 22.Rfc1+–) 20...Nc6 (20...cd4 21.a5 b5 22.Nd5 ed5 23.cb5 de3 24.fe3+=) 21.d5+= ed5 22.cd5 (22.Bd5 Kh8 23.a5 Na5 24.Bc3+–) 22...Nb4–/+ 23.Qb3 Bf1 24.d6 Qf7 25.Qf7 Kf7 26.d7? (26.Bf1 Re4 27.f3 Re3 28.Kf2=) 26...Bg2–+ 27.Kg2 g5 28.Ne2 Rcd8 29.de8Q Ke8 30.f4?? (better 30.Bc3–+) 30…Rd2 (30...Rd2 31.Rb1 Nd3 32.Bf6 Bf6–+) 0–1. JUANKARODA (1785) – Abdul1 (1800), lichess.org, 2020.

3.g4 b6 4.g5 Bg7 5.Bg2 e5?? 6.Ba8 c6 (6...fg5 7.c4+–) 7.gf6 Bf6 8.Nf3 (better 8.a3!? Na6 9.c4 Nc7+–) 8...Na6 (8...e4 9.Nd4 c5 10.bc5 bc5 11.c4 Bd4 12.Bd4 cd4 13.Be4+–) 9.a3 (better 9.Ne5 Qe7 10.Nc6 Qe4+–) 9...Qc7 (9...Nc7 10.Be5 Na8+–) 10.b5! Nc5 (10...cb5 11.Nc3 Decoy) 11.bc6 dc6 12.d4 ed4 13.Bd4 (worse 13.Nd4 Bd7 14.Nc3 Kf7+–) 13...Bd7 14.Bf6 (better 14.e4+–) 14...Nf6 15.Nd4 (15.Qd4 Ke7+–) 15...Qc8 (15...0–0 16.Bc6! Bc6 17.Nc6 Qc6 18.f3+–) 16.Bc6! Bc6 17.Nc6 Qc6 18.f3 0–0 19.Nc3 (19.Qd4 Ne6 20.Qc3 Qd6+–) 19...Qc8? (19...Ne6!? 20.Na2 Qc4+=) 20.h3 (better 20.Qd6!?+–) 20...Rd8 21.Qc1 Qe6 (21...Qf5!? 22.Qe3 Qc2+–) 22.Qf4 Nh5 23.Qg4 (23.Qg5 Nf6+–) 23...Qe3 (better 23...Qe5 24.Qc4 Kg7+–) 24.Rd1?? (better 24.Qc4 Kg7 25.Rd1 Rd1 26.Kd1+–) 24...Qc3–+ 25.Kf2 Rf8 26.Rhg1? (better 26.Qd4 Qc2 27.Qd5 Kh8 28.Qe5 Ng7 29.Rhe1–+) 26...Qc4 (better 26...Nf4 27.Rge1 Ne4 28.Kf1 Qe3–+) 27.Qh5 (better 27.Qc4 Kg7 28.Qd4 Nf6 29.e4+–) 27...Ne4 28.Kf1 Qc3?? (better 28...Qc2 29.Qd5 Rf7+–) 29.Rg6! hg6 30.Qg6 Kh8 31.Qe4 Qg7 (31...Qf6 32.Rd7 Qh6 33.Qe5 Kg8 34.Rd4 Qh3 35.Kf2+–) 32.Qd4 (32.Rd5!? Rf6 33.Rh5 Kg8+–) 32...Qd4 33.Rd4 Rf7 (33...Rc8 34.c4+–) 34.c4 Rc7 (34...Kg7 35.Kf2+–) 35.a4 (35.e4 Rc5+–) 35...a5 (35...Kg7 36.e4+–) 36.e4 Kg7 37.f4 Kf6 38.Kf2 Rg7 (38...Ke6 39.h4+–) 39.Kf3 (better 39.Rd6 Ke7 40.Rb6+–) 39...Kf7 (39...Rh7 40.Kg3 Rg7 41.Kh2 Ke6+–) 40.Rd7 Kf8 41.Rg7 Kg7 42.Kg4 Kf7 43.Kg5 (43.Kf5!? Ke7+–) 43...Ke7 44.h4 Kf7 45.h5 Kg7 46.h6 Kh7 47.e5 Kg8 48.e6 Kf8 49.h7 Kg7 (49...Ke8 50.h8Q Ke7 51.Qb8 b5 52.Qc7 Ke8 53.Qd7 Kf8 54.Qf7) 50.e7 (50.h8Q Kh8 51.Kg6 Kg8 52.e7 b5 53.e8Q) 50...Kh7 (50...Kf7 51.h8Q Ke7 52.Qc8 Kd6 53.Kf6 b5 54.ab5 a4 55.Qc6) 51.e8Q Kg7 52.Qf7! Kh8 (52...Kf7 53.f5 Passed pawn) 53.f5 (53.Kg6 b5 54.Qe8) 53...b5 54.Qf8 (54.f6 bc4 55.Qg7) 54...Kh7 55.Qh6 (55.f6 bc4 56.Qg7) 55...Kg8 56.Qg6 (56.Kf6 bc4 57.Qg7) 56...Kf8 57.Qh7 (57.Kf6 bc4 58.Qf7) 57...bc4 (57...Ke8 58.Qc7 ba4 59.Kf6 a3 60.Qe7) 58.f6 (58.Kf6 c3 59.Qf7) 58...c3 59.Qg7 Ke8 60.Qe7 1–0. afsharian – Daviddddee, lichess.org, 2018.

3.g4 d5!? =+.

3.g4 d6 4.g5 Bg7 5.e3 Qd7 6.Qf3 (6.Nf3 e5=) 6...e6 (6...Qa4 7.Bc3=+) 7.Bf6 (7.Bg2 fg5 8.Bg7 Qg7=+) 7...Bf6 (better 7...Nf6 8.gf6 Rf8=+) 8.Nc3?? (better 8.gf6 Qf7 9.d4=) 8...Bc3 (8...Bg5!? 9.Ne4 Be7 10.d4–+) 9.dc3 Qf7 (9...Ne7 10.Bd3–+) 10.Qe4 (10.Qf7 Kf7 11.f4 Bd7–+) 10...Qf5 (10...Ne7 11.Qf3–+) 11.Qc4 (11.Qf5 gf5 12.Rd1 Bd7–+) 11...Nc6 (11...Qc2?! 12.Bd3 Qb2 13.Rb1–+; worse 11...Qg5 12.Qc7 Qd8 13.Bb5 Bd7 14.Qd6 Bb5 15.Qe5–+) 12.b5 (12.f4–+) 12...Na5 (better 12...Ne5!? 13.Qe2 Qg5 14.f4 Qh4 15.Qf2 Qf2 16.Kf2 Ng4 17.Ke2–+) 13.Qb4? (better 13.Qc7 Ne7 14.Qa5–/+) 13...b6–+ 14.Bg2 (14.f4 Bb7 15.Bd3 Qg4–+ (15...Bh1?! 16.Bf5 c5 17.Qb2 gf5 18.c4–/+)) 14...Rb8 (better 14...Bb7 15.Bb7 Nb7 16.h4–+) 15.0–0–0? (15.f4 A) 15...Qc2 16.Be4 c5 17.bc6 (17.Bc2? cb4 18.cb4 Bb7–+) 17...Nc6 18.Bc6 (18.Bc2?! Nb4 19.cb4 Bb7=+) 18...Bd7 19.Be4+–; B) 15...a6 16.ba6 Ba6–+ (16...Qc2? 17.a7 Ra8 18.Ba8+–)) 15...Bb7 (better 15...Qg5!? 16.Bf3–+) 16.Bb7 Rb7 17.Ne2 (17.f4 Ne7–+) 17...Rb8 (17...Qf2 18.Qd4 e5 19.Qd3–+) 18.Ng3 (18.f4 Ne7–+) 18...Qf7 (18...Qg5 19.f4 Qc5 20.Rd4–+) 19.Rd3 (19.Ne4 Qe7–+) 19...Rd8 (19...a6 20.f4 h6 21.ba6–+) 20.Rhd1 (20.f4 Ne7–+) 20...Ne7 (20...e5 21.c4–+) 21.Ne4 Nf5 (better 21...0–0!? 22.f4 d5–+) 22.Nf6–/+ Kf8 23.c4? (better 23.e4 h6 24.ef5 hg5 25.Ne4 ef5 26.Ng5+=) 23...Nc6?? (better 23...e5–+) 24.bc6+= Rc8?? (24...Ne7 25.Qa4+=) 25.Nd7?? (better 25.e4+–) 25...Ke7 (25...Kg8 26.e4 Nh4 27.Qd2+–) 26.Qc3 (26.e4 Nh4 27.Nf6 Rcd8+–) 26...Rcd8 (better 26...h6+–) 27.Rd6?? (better 27.Qa3 h6 28.e4+–) 27...cd6?? (better 27...Nd6 28.f4 h6–+) 28.Rd6?? (28.e4 e5 29.ef5 Qf5 30.Qa3 Qg5 31.Kb1=+) 28...Kd6 (28...Nd6 29.Nf6 Rc8 30.Qe5 Rc6 31.Nd5 Kd7 32.Qh8 ed5 33.cd5 Qd5 34.a3–+) 29.Qd3?? (better 29.Qa3 Kc7 30.Qa7 Kd6 31.Qa3 Kc7 32.Qa7 Kd6 33.Qa3 Kc7 34.Qa7=) 29...Kc6 (better 29...Kc7 30.c5 Qg7–+) 30.Ne5 Kc7 31.Nf7 Rd3 32.Nh8?? (32.cd3 Rf8 33.Ne5–+) 32...Rd8 (32...Rd7!? 33.c5–+) 33.Nf7 Rf8 34.Ne5 Nh4 (better 34...Kd6 35.Ng4 Rc8–+) 35.Nf3 (35.f4–+) 35...Nf3 (35...Rf3 36.Kb2–+) 36.Kd1 Nh2 37.Ke2 (37.f4 e5! 38.fe5 Rf5–+) 37...Ng4 (better 37...Nf3 38.c5–+) 38.Kf1 (38.f4 e5 39.Kf3 ef4 40.ef4 Ne5 41.Ke4 Nc4–+) 38...Ne5 (better 38...Rf2 39.Ke1–+) 39.Kg2 (39.f4 Nc4 40.Ke2 Rd8–+) 39...Nd7 (better 39...Nc4 40.Kg3–+) 40.Kh3 (40.f4 Rf5 41.Kf2 e5–+) 40...a6 (better 40...Rf2 41.Kg3 Rc2 42.a3–+) 41.f4 a5 (41...e5 42.Kg3–+) 42.Kg4 a4 (better 42...Rf5 43.Kf3–+) 43.a3 (43.e4 e5 44.f5 Nc5–+) 43...Kb7 (43...Rf5 44.Kh4–+) 44.c3 (44.Kg3 Rc8–+) 44...Kb8 (better 44...Rc8!? 45.c5–+) 45.Kf3 Kc8 (45...Ne5 46.Kg3–+) 46.Ke4 Kd8 47.Kf3 (47.Kd3 e5 48.Ke4 ef4 49.ef4 Nc5 50.Ke3 Ne6–+) 47...Rf7 (47...Ne5 48.Ke4 Nc4 49.Kd3 Na3 50.c4–+) 48.Kg4 (48.Kg2 Rf5 49.Kf3 Ne5 50.Kg3 Nc4–+) 48...e5 49.Kf3 Nc5 50.Kg4 Kc8 (better 50...ef4!? 51.ef4 Ne6 52.Kf3 Rf4 53.Ke3 Rc4 54.Kd3–+) 51.fe5 Kc7 0–1. Agiant – SatanSatan1, lichess.org, 2020.

3.g4 Kf7 4.g5 h6 5.gf6 ef6 6.e4 (6.a3 d5=) 6...Bg7 (6...Bb4!? 7.a3 Bf8=+) 7.Bc4+= Kf8 (7...Ke8 8.Qf3+=) 8.b5 (8.Qf3 Nc6+=) 8...f5 9.Ba3 (better 9.Nc3!?+=) 9...d6–/+ 10.c3 (10.e5 Be5 11.d4–/+) 10...Ne7 (10...fe4!? 11.Qe2 Nf6–/+) 11.ef5 (11.Qf3 Ke8=) 11...Nf5=+ 12.d3 (better 12.Qf3=+) 12...Bc3?? (better 12...Nd7=+) 13.Nc3+– Qf6 (13...Kg7 14.Bb2 Re8 15.Ne4 Kh7 16.Ne2+–) 14.Nge2 (14.Nd5 Qd8 15.Bb2 Rh7+–) 14...Nd4 (14...Nh4 15.Qc1 Nf3 16.Kd1 Ne5+–) 15.Qd2 (better 15.Nd4!? Qd4 16.Qf3 Ke8+–) 15...Ne2 (15...Nf3 16.Kd1 Nd2 17.Kd2 A) 17...Qf2? 18.Rhf1 Qf5 19.Nd5+– (19.Rf5?! Bf5 20.Nd5 Rh7+–); B) 17...Rh7–+) 16.Ke2+– Ke7?? (16...Bg4 17.Kf1 Nd7 18.Rg1+–) 17.Qe3 (better 17.Nd5 Kd8 18.Nf6+–) 17...Kd7 (17...Kd8 18.Nd5 Qg7 19.Rhb1 Bg4 20.Ke1+–) 18.Nd5 Qg7 19.Rab1 c6 (19...Re8 20.Bb2 Re3 21.fe3+–) 20.Bb2 cd5 (20...Qf8 21.bc6 Nc6+–) 21.Bg7 Re8 22.Qe8! Ke8 23.Rhe1 (better 23.Bd5 Nd7 24.Rbg1+–) 23...dc4 24.Kf1 (24.dc4 Be6+–) 24...Kd7? (better 24...Kf7 25.Bh6 Bf5 26.dc4 Bd3 27.Kg2 Bb1 28.Rb1 Nd7+–) 25.dc4+– h5 26.Bf8 b6 (26...Kc7 27.Rbd1 Bh3 28.Kg1+–) 27.Re7 (better 27.Rbd1!? Kd8 28.Rd6 Kc7 29.Rg6 Bf5 30.Bd6 Kb7 31.Rg7 Nd7+–) 27...Kd8 28.Rbe1 (better 28.Rh7 Bh3 29.Ke2 Nd7 30.Bd6 Kc8+–) 28...Bd7? (28...Nd7 29.Bh6 a6+–) 29.Rg7 a6 (29...Kc7+–) 30.Bd6 ab5 (30...Kc8 31.Rg8 Kb7+–) 31.Rg8 Be8 32.Ree8 (32.Re7 bc4 33.Rge8) 32...Kd7+– 33.Rd8 Kc6 34.Rg6 bc4 35.Bb8 Kb5 36.Rd5 Kb4 37.Bd6 (37.Rb6 Ka3 38.Bd6 Ka2 39.Rd2 Ka1 40.Be5 c3 41.Bc3) 37...Kc3 38.Rg3 (38.Ke1 Re8 39.Kd1 h4+–) 38...Kb2 39.Rd2 Ka1 (39...Kc1 40.Bf4 Kb1 41.Re3 Re8 42.Re8 c3 43.Re1) 40.Be5 (40.Re3 Re8 41.Re8 c3 42.Re1) 40...Kb1 41.Ke2 Ra2 (41...Rg8 42.Rg8 c3 43.Rg1) 42.Rg1 1–0. laguanajulio – Agesan, lichess.org, 2020.

3.g4 g5 4.h4+= gh4 5.Rh4 (5.e4 d5 6.g5 Be6+=) 5...Bh6 (5...e5 6.e4=) 6.e3 Bg5 (6...e5 7.d4+=) 7.Rh1 (better is 7.Rh5 e5 8.f4+–) 7...Nh6?? (7...e5 8.f4 ef4 9.Nf3+/–) 8.Nh3?? (better is 8.f4 Nf7 9.fg5 Ng5+–) 8...Rg8?? (8...Nf7 9.Ng5 Ng5 10.f4+/–) 9.Bd3 (9.Ng5 Ng4 10.Rh7 d5+–) 9...Rg7?? (9...d5 10.Ng5 Rg5 11.Rh6 Bg4+–) 10.Ng5+– Rg5 11.Rh6 d5 12.Rh7 Nc6 (12...Be6+–) 13.Rh8 Kd7 14.Bf5 (14...Kd6 15.Rd8 Nd8 16.Bc8 Rc8 17.Nc3+–) 1–0. burbank – PT84, Live Game Caissa's Web, 2004.

3.h3 e5 4.e3 Nc6 5.b5 Nce7 6.c4 d5 7.Nf3 b6 8.a3 Be6 9.Qa4 dc4 10.Bc4 Qd7 11.e4 Bc4 12.Qc4 c5 13.0–0 Nc8 14.Nc3 Nd6 15.Qe2 Ne7 16.a4 Bg7 17.Rfd1 f5 18.Nd5 fe4 19.Ne5 Qb7 20.Ne7 Qe7 21.Nc6 Qf7 22.d3 0–0 23.de4 Rfe8 24.Rd6 Bb2 25.Qb2 Re4 26.Ne5 Qg7 27.Qb3 Kf8 28.Nd7 Ke7 29.Rdd1 Ke8 30.Qd5 Re7 31.Qa8 Kf7 32.Qd5 Re6 33.Re1 Kg8 34.Re6 Qa1 35.Re1 Kg7 36.Ra1 Kh6 37.Re1 a5 38.Nb6 1–0. nakpim – malafaia, playok.com, 2012.

3.h3 Bg7 4.e3 e5 5.Ne2 Ne7 6.Nec3 c6 7.a4 0–0 8.b5 Nd5 9.Bc4 Kh8 10.Nd5 cd5 11.Bd5 a6 12.c4 ab5 13.cb5 Qb6 14.Ba3 Re8 15.Bf7 Rd8 16.Be7 d6 17.Bd8 Qd8 18.Bd5 Nd7 19.Nc3 Nc5 20.d4 ed4 21.ed4 Qe7 22.Kf1 Nd7 23.a5 Nf8 24.a6 Rb8 25.a7 Ra8 26.b6 Be6 27.Bf3 Bc4 28.Kg1 Nd7 29.Bb7 Qd8 30.Ba8 Qa8 31.b7 Qb7 32.a8Q Qa8 33.Ra8 Bf8 34.Qa4 Be6 35.d5 Bf5 36.g4 Kg7 37.gf5 Ne5 38.Qe8 Nf3 39.Kg2 Nh4 40.Kf1 Kh6 41.Qf8 Kg5 42.Qd6 Nf5 43.Ne4 Kh6 44.Qf6 1–0. nakpim – ferdi11, playok.com, 2012.

3.Nh3 e5 4.e3 (4.a3 d5+=) 4...Bb4–/+ 5.Bd3 (5.a3 Ba5–/+) 5...b6 (5...d5 6.Qf3–/+) 6.c3 (6.f4 d5+=) 6...Bc5 (6...Be7 7.0–0–/+) 7.0–0 Ba6 (better is 7...d5 8.Qf3 c6–/+) 8.f4?? (better is 8.Ba6 Na6 9.d4=) 8...Bd3–+ 9.f5 (9.Re1–+) 9...Bf1 10.Qf1 Ne7 (10...d5 11.d4 Bd6 12.c4 dc4 13.Qc4–+) 11.Qf2 (11.d4 Bd6–+) 11...Nf5 12.d4 ed4 13.Qf3 Nc6 14.Qe4 Qe7 15.Qc2 de3 16.Nf4 e2 17.Kh1 (17.Kh1 e1Q#) 0–1. markcav – aconroy, net–chess.com, 2002.

3.h4 b5 4.h5 gh5? (better is 4...Nh6!?+=) 5.e3 (5.Rh5?! e5 6.a3 d5+=) 5...d6 6.Bb5 c6 7.Qh5 Kd7 8.Be2 Qe8 9.Qe8 Ke8 10.f4 Ba6 11.a3 Be2 12.Ne2 Nd7 13.Nbc3 a5 14.b5 cb5 15.Nb5 Rb8 16.a4 Nc5 17.Nec3 Bg7 18.d4 Nh6?? (better is 18...Na6+–) 19.dc5 dc5 20.Ne4 Kd7 (20...Nf5 21.Kf2+– (< 21.Nc5 Ne3 22.Ke2 Nc2+–)) 21.Nc5 Kc6 22.Ba3 Rhd8 (22...f5 23.0–0–0 Ng4 24.Rd7 Rb5 25.ab5 Kb5 26.Rb7 Kc6 27.Re7+–) 23.Ke2 (23.Ne6 Ng4 24.Na7 Kd7 25.Nd8 Rd8 26.0–0–0 Ke8 27.Rd8 Kd8 28.Rh7 Bf8 29.Nc6 Kd7 30.Ne7 Ke8+–) 23...f5 24.Rad1 (24.Rac1 Rg8 25.Ne6 Kd7 26.Ng7 Rg7 27.Rcd1 Ke8 28.Rh6 Rc8+–) 24...Ng4 (24...Rd1 25.Rd1 Bf6 26.Nb3+–) 25.Rd8 Rd8 26.Rh7 Rg8 27.Ne6 Bf6 28.Be7 Kd5 29.Ned4 Re8 (29...Bd4 30.c4 Kc4 31.Nd4 Rg6+–) 30.Nc7 Ke4 31.Ne8 Ne3 32.Nf6 Kd4 33.c3 Kc3 34.Ke3 Kb3 35.Kd3 Ka4 (35...Kb2 36.Nd5 Ka2 37.Nc3 Kb3 38.Rh1 Kb2 39.Rb1) 36.g4 (36.Nd5 Kb3 37.Rh1 Kb2 38.Nc3 a4 39.Rb1) 36...fg4 37.Kc4 g3 38.Rh1 g2 39.Ra1 1–0. hertford (2020) – k.o.bold (1935), ChessWorld.net, 2003.

3.h4 e5 4.b5 Qe7 (4...d5!?+=) 5.Nc3= Nh6 6.e3 (6.e4 d6+=) 6...Nf5 (6...c6 7.e4=) 7.Nf3 Qb4? (7...c6 8.h5 e4 9.Nh4 Nh4 10.Rh4+=) 8.Rb1 (8.Nd5 Qb2 9.Nc7 Kd8 10.Na8 b6+–) 8...Qa5? (better is 8...Ne7+=) 9.Nd5+– a6?? (9...Kd8 10.Ne5! fe5 11.Be5 Bg7 12.Bc7 Qc7 13.Nc7 Kc7+–) 10.Bc3 Qa2 11.Nc7 Kf7 12.Ra1 ab5 13.Ra2 Ra2 14.g4 (14.Bb5 d5 15.Nd5 Nd6 16.Nf6 Nb5 17.Be5 Bd6+–) 14...Nd6 (14...Ng7 15.Ne5! fe5 16.Qf3 Ke7 17.Be5+–) 15.Ne5! fe5 (15...Kg7 16.g5 Be7 17.Nd5+–) 16.Qf3 Kg8 17.Qd5 (17.Qd5 Nf7 18.Qa2+–) 1–0. pierre – CORRELON_2, internet, 2010.

3.h4 Bg7 4.Nc3 e5 5.h5 Ne7 6.Nf3 d6 7.e3 Nd5?? 8.Nd5+– 1–0. marere – sou, internet, 2011.

3.a3 d5

4.e3 c6 5.g4 (5.c4!?+=) 5...e5=+ 6.Bg2 Ne7 7.c3 (7.g5 Nd7=+) 7...Be6 8.f3 Nd7 9.d3 Bh6 (9...Qb6 10.Qe2–/+) 10.e4 (10.Qe2 Qb6 11.f4 0–0–0–/+) 10...Qb6 11.ed5 (11.d4 0–0–0–/+) 11...Bd5 (better 11...Nd5!? 12.Qc2 Ne3–+) 12.Qe2 Qc7 (12...Be3 13.Kf1 Bb3 14.c4–/+) 13.Nd2 (13.c4 Be6=+) 13...0–0–0–/+ 14.c4 Be6 15.a4 (15.Rd1 Rhe8=+) 15...f5 (15...Qd6 16.Bc3 f5 17.c5–/+) 16.h3 (better 16.Nh3–/+) 16...e4 (better 16...Bf4!?–/+) 17.fe4 (17.Bh8 Qg3 18.Kf1 Rh8 19.de4 Bd2 20.Qd2 Bc4 21.Ne2 fe4=) 17...Qg3 (17...Ne5 18.ef5 Nd3 19.Kf1 Nf4–+ (worse 19...Nb2 20.Qe6 Kb8 21.Ndf3=+)) 18.Kd1+= fg4 (18...Rhf8 19.ef5 gf5 20.Bd4= (worse 20.Qe6 Qg2 21.Qh6 Qh1–/+)) 19.Bh8+– Rh8 20.Nf1 (20.hg4 Bg7 21.Rb1 Ne5+–) 20...Qe5 (better 20...Qd6=) 21.Rc1?? (better 21.Rb1+–) 21...Bc1–+ 22.Kc1 Qa1 23.Kd2 Qa4 24.hg4 Qb4 25.Kc2 Nc5 26.Nd2 (26.Rh3–+) 26...Na4 27.Qf3 Qb2 28.Kd1 Nc3 29.Ke1 Qc1 30.Kf2 Qd2 31.Kg3 g5 (31...Rd8 32.Bf1 h5 33.Qf6 Rd3 34.Bd3 Qd3 35.Kg2 Qe4 36.Qf3 Qc4 37.Qf8 Kd7 38.Qf2 Bd5 39.Kh2 hg4 40.Nh3–+) 32.Rh6 (32.Qf6 Qf4 33.Qf4 gf4 34.Kf4 Ng6 35.Kg5–+) 32...Ng6 33.Bf1 (33.Qf6 Re8 34.Bf1 Nd1 35.Rg6 hg6–+) 33...Ne5 (better 33...Rf8 34.Qf8 Nf8–+) 34.Qf6 Qe3 (better 34...Ne4 35.de4 Qe1 36.Kg2 Qe4 37.Nf3 Qg4 38.Kf2 Qf3 39.Qf3 Nf3 40.Kf3 Rf8 41.Kg2 Bf5–+) 35.Kg2–/+ Qd2 (35...Re8 36.Qe5 Qd2 37.Kh1–/+) 36.Kh1?? (36.Kg3 Ne4 37.de4 Qe1 38.Kg2 Qe4 39.Nf3 Qg4 40.Kf2 Qf3 41.Qf3 Nf3 42.Re6–+) 36...Ng4?? (36...Re8 37.Qe5 Nd1 38.Re6 Nf2 39.Kg2 Ng4 40.Be2 Ne5 41.Re8 Kd7 42.Re5 b6–/+) 37.Qh8 (better 37.Qe6!? Kb8 38.Qg4+–) 37...Kc7= 38.Rh7 (38.Qh7? Bd7 39.Rh2 Nh2 40.Qh2 Qh2 41.Kh2 a5–+) 38...Kb6 39.Qd8 (better 39.Nf3!? Qc1 40.Qd4 Ka6 41.Qg1=) 39...Ka6–/+ 40.Nf3? (better 40.Qe7 Nf2 41.Kh2 Nd3 42.Ne2–/+) 40...Qf2–+ Threatening mate: Qxf3 41.Bg2 (41.Nh2 Nh2 42.Qe7 Qf1 43.Kh2 Qf4 44.Kg2 Qd2 45.Kh1 Qc1 46.Kg2 Qb2 47.Kh1–+) 41...Qe3 (better 41...Ne2 42.Qc7 Ng3 43.Qg3 Qg3–+) 42.Qg5 (better 42.Qc7 Qc1 43.Ng1=+) 42...Qc1?? (42...Qd3 43.Rh5 Qb1 44.Ng1 Qa2–+) 43.Qc1+– Ne2 44.Qa3 Kb6 45.Qb4 (45.c5 Kb5 46.Rb7) 45...Ka6 46.Qb7 Ka5 47.Qa7 Kb4 48.Rb7 Kc3 49.Qa3 Kc2 50.Rb2 Kd1 51.Qa4 (51.Rd2) 51...Kc1 52.Qc2 (52.Qa1) 1–0. Delboy Smith – Mphilliber, ChessWorld.net, 2010.

4.e3 e5 5.c4 c6 (5...a5 6.Qa4 Bd7 7.b5=) 6.c5 (6.d4 e4+=) 6...Ne7 7.d4 e4 8.Ne2 Bg4 (8...Bh6 9.Nbc3=) 9.h3 Bd7 10.Nbc3 a6 11.a4 Bg7 12.Ng3 0–0 13.Be2 Nf5 (13...f5 14.0–0=) 14.Nf5+= Bf5 15.g4 (15.0–0 Nd7+=) 15...Be6= 16.f4 (16.h4 Nd7=) 16...f5 (16...ef3!? 17.Bf3 f5=+) 17.g5= Nd7 (17...b6 18.Rb1=) 18.h4 b6 19.h5 (19.a5 bc5 20.bc5 Qb8+=) 19...bc5 (19...a5 20.hg6 hg6 21.Na2=) 20.bc5+= (20.dc5 Rb8 21.Rc1 Rb4–/+) 20...Rb8 21.Ba3 (21.Qd2 Qa5+=) 21...Qa5= 22.hg6?? (22.Qd2 Rb3 23.Nd1 Qc7=) 22...hg6?? (better is 22...Qc3 23.Kf2 hg6–+) 23.Kd2 (better is 23.Qd2 Rb3 24.Nd1 Qd2 25.Kd2=) 23...Rb3?? (better is 23...Nc5 24.Kc2 Na4–/+) 24.Kc2 (better is 24.Qb3 Rb8 25.Qc2+–) 24...Rc3 (24...Qc3) 25.Kb1–+ Rb8 26.Bb2 (26.Bb5 ab5 27.Bb2 Re3–+) 26...Rcb3 (26...Rb2 27.Kb2 Qb4 28.Ka2 Ra3) 27.Ra2–+ Nc5! 28.Qf1 (28.dc5 Rb2) 28...Na4 29.Ra4 Rb2 30.Kc1 (30.Ka1 Qa4) 30...Qa4 (30...Qd2) 31.Qh3 (31.Rh8 Bh8 32.Bd3 Qa1 33.Bb1 Qb1) 31...Qc2# (31...Re2?! 32.Qh7 Kf7 33.Qg7 Kg7 34.Rh7 Kf8 35.Rf7 Ke8 36.Re7 Kd8 37.Rd7 Kc8 38.Rc7 Kc7=) 0–1. maxii – ASKIM, Live Game Caissa's Web, 2004.

4.e3 Bg7 5.d4 e6 6.c4 Ne7 7.Nd2 0–0 8.c5 (8.Ngf3 a6+=) 8...c6 (8...e5 9.de5 fe5 10.Ngf3=) 9.Qb3 (9.Ngf3 Nd7+=) 9...Qc7 10.0–0–0 (10.e4!?=) 10...b6 11.a4 (11.Ngf3 a5=+) 11...Nd7–/+ 12.e4 Bh6 (12...a5 13.Ba3–/+) 13.Qh3 (better 13.Re1–/+) 13...Bg7 (better 13...Kg7–/+) 14.Qe6+= Rf7 15.Qd6 Qd8 (15...Qb7 16.b5 bc5 17.dc5 cb5 18.Bb5 a6+–) 16.Qg3 (better 16.ed5 Nd5 17.b5+–) 16...bc5=+ 17.bc5 Qa5 18.Qa3 Qc7 (18...de4 19.Ne4 Nd5 20.Bc4=) 19.f3 Rb8 20.g4 Bh6 (20...Nf8 21.h3=) 21.Kc2 (21.h4 f5 22.e5 Bd2 23.Rd2 Nf8+–) 21...Nf8= 22.Ne2 Ne6 (22...de4!? 23.Ne4 Be6=) 23.h4+= Ba6 (23...f5 24.h5 Bd2 25.hg6 hg6 26.Rd2 fe4 27.fe4=) 24.Qa1 (better 24.h5 g5 25.Rb1+–) 24...Bd3?? (better 24...Be3=) 25.Kd3+– de4 26.fe4 (26.Ne4?! Nd5 27.Bc1 Bc1 28.Rc1 Rb3 29.Kc2 Rf3+–) 26...Rd8 (26...Qd7 27.Kc2+–) 27.Nb3 (27.Qa3 Bg7 28.Nc4 Nc8+–) 27...f5 28.ef5 (28.gf5 gf5 29.Rg1 Rg7 30.Rg7 Bg7 31.ef5 Nf5+–) 28...gf5 29.g5 (29.gf5 Qe5 30.Rg1 Kf8+–) 29...Bg7 30.Kc2 (30.Re1 Nd5+–) 30...Nd5 31.Kb1 Rb8 32.Rd3 (32.Rh3 Qe7+–) 32...Qe7 33.Kc1 (33.Rg1 Nef4 34.Nf4 Qe1 35.Bc1 Nf4+–) 33...Qd7? (better 33...Nef4 34.Nf4 Nf4+–) 34.Rg1 (34.Rf3 Qe8 35.Kd2 Rfb7+–) 34...Qe8 Black gets strong initiative 35.h5 (better 35.Kd2+–) 35...Rfb7+– 36.Qa3 Nef4 37.Nf4 Qe1 38.Rd1 Qe3 39.Nd2 Qg1? (better 39...Qf4 40.Bb5 cb5+–) 40.Ba6+– Bd4 41.Bb7?? (better 41.Bd4 Qd4 42.Nd5 (42.Bb7?! Nf4 43.Ba6 Rb4+–) 42...cd5 43.Bb7 Rb7 44.Re1+–) 41...Bb2+= 42.Qb2 (42.Kb2? Qd1 43.Nb3 Ne3–+) 42...Qc5 43.Qc2 (better 43.Kb1!? Nc3 44.Ka1 Nd1 45.Qg7 Kg7 46.Ne6 Kf7 47.Nc5=) 43...Qa3=+ 44.Qb2 Qb2 45.Kb2 Rb7 46.Nb3 (46.Ka3 Nf4 47.Rf1 Nh5 48.Rf5 Rd7–/+) 46...Nf4–/+ 47.Rd8 Kf7 48.h6? (better 48.Rd6!?–/+) 48...Ne6–+ 49.Rd6 Nc5 50.Rf6 (50.Rc6 Nb3 51.Kc3 f4–+) 50...Kg8 (50...Ke7 51.Rc6 Nb3 52.Kc3–+) 51.Rc6 Nb3 (51...Rb3?! 52.Kc2 Rg3 53.Rc5 Rg5 54.Rc7=) 52.Rc3 (52.Kc3–+) 52...Nd4 53.Ka3 Kf7 54.a5 (54.Rc4 Ne6 55.Rc6 Re7–+) 54...Kg6 (better 54...Nb5!? 55.Kb3 Nc3 56.Kc3–+) 55.Ka4 Kg5 56.a6 (56.Rd3 Nc2 57.a6 Rb6–+) 56...Rb6 57.Ka5 Nc6 (57...Nc6 58.Ka4 f4–+) 0–1. Delboy Smith (1755) – broadoak (2125), ChessWorld.net, 2011.

3.a3 Bg7

4.Qc1 e5 5.g3 (5.Nf3 d5=) 5...Ne7 6.c4 0–0 7.Bg2 c6 8.d3 b6 9.b5 Bb7 10.bc6 Nbc6 11.f3 (11.h4 h6=+) 11...Qc7 (11...d5 12.Nd2–/+) 12.Nd2 (12.Nc3 Rac8=+) 12...Rae8 13.Qc2 d5 14.e3 (14.cd5 Nd5 15.Qc4 Qf7–/+) 14...dc4 (14...Nf5 15.Nf1 d4 16.e4–/+) 15.dc4 (15.Qc4 Kh8=+) 15...Nd8 (15...Nf5 16.Kf2–/+) 16.Ne2 Nf5 17.Qb3 Qc6 (better 17...Qc5 18.e4 Ne3=+) 18.0–0–0?? (better 18.e4 Ne7 19.c5 Ne6 20.cb6 Qb6 21.Qb6 ab6 22.Nc4=) 18...Ne6 (18...Qc5 19.e4 Ne3 20.Rdg1–+) 19.Kb1 (19.Bh3 Nc5 20.Qc3 Rd8 21.Bf5 gf5–+) 19...Ra8 (19...Bh6 20.Nf1–+) 20.Ne4 (20.e4 Nc5 21.Qc3–/+) 20...a5 (20...Ba6 21.Rc1 Rac8 22.Bh3–+) 21.h4 (21.f4 Qc8 22.Rhg1 Rb8=+) 21...a4 (21...Ba6 22.Rc1 Rac8 23.g4–/+) 22.Qb5? (better 22.Qc3=+) 22...Ne3–+ 23.Qc6 (23.Rd6 Qb5 24.cb5 Nc5 (24...Ng2?! 25.Re6 Rab8 26.Rc1–/+) 25.Nc5 bc5–+) 23...Bc6 24.Bh3 f5 (24...Nc5 25.Nc5 bc5 26.Be6 Kh8 27.Bd5 Bd5 28.cd5–+) 25.Rd6 Nd4 (better 25...Be4!? 26.fe4 Nc5 27.Rc1–+) 26.Nd4 ed4 (better 26...Be4 27.fe4 ed4 28.Bd4 Nc4 29.Bg7 Kg7 30.Rd7 Rf7 31.Rf7 Kf7 32.ef5 b5–/+) 27.Rc6= fe4 28.fe4 Rf2 29.Be6 Kh8 30.Rb6 The passed pawn on c4 will quickly become a dangerous weapon (30.h5 d3 31.Bg7 Kg7 32.hg6 h6 33.Rc7 Kg6 34.Bf5 Nf5 35.ef5 Rf5 36.Rc6 Kg7 37.Rch6 Rc8=+) 30...d3 31.Bg7 Kg7 32.c5? (32.Rb7 Kf8 33.Ka1–/+) 32...d2–+ 33.Rd6? (better 33.Rb7 Kf8 34.c6–+) 33...Rb8 34.Ka1 Nf1 (better 34...Re2 35.Rd7 Kf6–+) 35.Rg1? (35.c6 Rb6 (35...Ng3? 36.c7 Re8 37.Rd1+–) 36.Bg4 Rb3=+ (36...Ng3 37.c7 Rb3 38.Rd7 Kf6 39.Rd1+=)) 35...Rbf8?? (better 35...Re8 36.Rd7 Kh8–+) 36.Bg4 (36.Rd7!? Kf6 37.Bg4=+) 36...Ne3–/+ 37.Bd1 Rf1 (worse 37...Nd1 38.Rd1 R8f3 39.Kb2 Rg3 40.c6 Rb3 41.Kc2+–) 38.Rf1 Rf1 39.Rd2 Nd1 (39...Rd1?? 40.Rd1 Nd1 41.c6+–) 40.c6 (40.Rd4 Nf2 41.Kb2 Kf6=) 40...Nc3 (40...Ne3 41.Ka2=+) 41.Kb2= Nb5 (41...Ne4? 42.c7 Nd2 43.c8Q+–) 42.Rd7 Kh6 43.g4 (43.Rd5!? Rf2 44.Kc1=) 43...Rf2 44.Kc1 Nc3?? (44...Na3 45.Kd1 Nc4 46.g5 Kh5 47.Rh7 Kg4–+) 45.c7+– Ne4 (45...Na2 46.Kd1 Rf1 47.Kc2 g5+–) 46.c8Q Rf1 47.Rd1 (47.Kc2 Rf3 48.Qg8 Rf2 49.Kd3 Nc5 50.Ke3 Re2 51.Kf3 Rf2 52.Kf2 Nd7 53.Kg3 Ne5 54.Qf8) 47…Rd1 (47...Rf3 48.Qe8 Rc3 49.Kb2 Rb3 50.Ka2 Nc3 51.Ka1 Ra3 52.Kb2 Nd1 53.Ka3+–) 1–0. Delboy Smith (1745) – dakarportsmouth, ChessWorld.net, 2011.

4.c4 b6 5.e3 Bb7 6.f3 (6.Nf3 Nh6+=) 6...Nh6 7.d4 0–0 8.Bd3 d6 (8...a5 9.Ne2=) 9.Ne2+= Nd7 (9...e5 10.0–0+=) 10.0–0 (10.Nf4!? Rf7 11.Ne6+/–) 10...e5+= 11.d5 f5 12.Qc2 Kh8 (12...c6 13.Nbc3+=) 13.Nd2 Rb8 (13...c6 14.dc6 Bc6 15.e4+=) 14.e4 a6 15.ef5 gf5 16.Ng3+/– Nf6 17.Nf5 Nf5 18.Bf5 Nh5 19.Bh7+– Nf4 20.Bd3 Qg5 21.g3 Nh3 22.Kg2 Nf4 23.Kh1 Nd3 24.Qd3 Qf6 25.Ne4 Qf5 26.Bc1 Rf7 27.Be3 Rbf8 28.Bg1 c6? 29.Rf2 cd5 (29...cd5 30.cd5 Qg6+–). Fournier,Frederic (1875) – chilesvengador, Active (1/0), 2005.

4.e3 (--> 3.e3 Bg7 4.a3).

4.Nf3 e5 5.e3 d5 6.Be2 e4 (6...Ne7 7.Nc3=) 7.Nd4+= f5 8.0–0 Bd4 (8...Nf6!?+=) 9.Bd4+/– Nf6 10.c4 (10.Nc3 0–0+/–) 10...0–0 (10...dc4 11.Bc4 Nc6 12.Bc3+=) 11.Nc3+/– dc4 (11...Be6 12.Qb3+/–) 12.Bc4 Kh8 (12...Kg7 13.Nd5 Nbd7 14.d3+–) 13.Nd5 b5? (better is 13...Nbd7+–) 14.Nf6 (14.Bf6?! Rf6 15.Ba2 Rd6+/–) 14...Rf6 15.Bb5 c6 16.Bc4 Ba6 17.Ba6 Na6 18.Qb3 (18.f3 ef3 19.Qf3 Rc8+–) 18...c5 (18...Nc7 19.Rac1 Qd6 20.Bf6 Qf6 21.Qa4+–) 19.Bf6 (better is 19.bc5!? Rb8 20.Qc3 Kg7+–) 19...Qf6 20.Qc3 Qc3 21.dc3 cb4 22.cb4 Rc8 23.Rfc1 Rd8 24.Rd1 Re8 25.Kf1 Re5 26.Rd8 Kg7 27.Rad1 Nc7 28.R1d7 Kh6 29.Rc7 g5 30.Rdd7 Kh5 31.Rh7 Kg4 32.h3 1–0. Fournier,Frederic (1995) – ximote (1695), Active (3/0), 2004.

4.Nf3 e5 5.e3 Ne7= 6.Be2 d5 7.0–0 0–0 8.d3 Be6 9.e4 d4 10.c3 dc3 11.Nc3 c6 (11...Nec6 12.d4 Nd4 13.Nd4 ed4 14.Nb5+=) 12.d4+= ed4 13.Nd4 Bf7 14.Nf3 (14.Qc2 Qe8+/–) 14...Nd7 15.Qc2 Qc7 (15...f5 16.Rfd1+=) 16.Rfd1 Ne5 17.Ne5 (17.Nb5 Nf3 18.Bf3 Qb8+/–) 17...fe5+= 18.Rd2 Rad8 19.Rad1 Rd2 20.Rd2 Rd8 21.Qd1 Rd2 22.Qd2 Be6 23.f3 Qd7 (23...Qb6 24.Kf1 Qd4 25.Nb1 Qd2 26.Nd2+=) 24.Qd7 Bd7 25.Bc4 Kf8 26.Na4 b6 27.Nc3 Nc8 28.Nd1 Nd6 29.Bb3 Nb5 30.Ne3 Nd4 31.Bc4 Ke7 32.Kf2 Be6 33.Be6 Ke6 34.Bd4 ed4 35.Nc2?? c5 36.Ke2 g5 37.Kd3+= Ke5 38.g3 h5 39.h3 Bf6 40.Kc4?? Kd6?? 41.bc5 bc5 42.a4 Kc6 43.Na3 a6 44.Nb1 Be5+= 45.g4 hg4 46.hg4 Bf4 47.Na3 Bc1 48.Nc2 Bf4 49.Ne1+= Be3? 50.Nd3+– Bf4 51.Nc5 Bd6 52.Na6 Kb6 53.Nb4 Ka5 54.Nc6 Ka4 55.Nd4 Ka5 56.Ne6 Be7 1–0. Fournier,Frederic (1945) – karrikasko (1690), Active (5/0), 2004.

4.Nf3 e5 5.e4 Ne7 +=.

3.a3 Nh6

4.e3 Nf7 5.Nf3 Bg7 (5...d5 6.d4+=) 6.d4 0–0 7.Nbd2 (7.c4 e5+=) 7...Re8 (7...e5 8.c4+=) 8.Bd3 e6 (8...e5 9.c4+=) 9.h4 (9.0–0 d5+–) 9...d6 10.h5 f5 (10...g5!?+=) 11.hg6+– hg6 12.Nh4 Nh8 (12...e5 13.Ng6 Qg5+–) 13.Ng6?? (better 13.g4+–) 13...Ng6=+ 14.Qh5 (14.g4 Nc6=+) 14...Nf8 (14...Kf7 15.Qf3–/+) 15.e4 (better 15.g4=+) 15...Qf6?? (15...Nbd7 16.Kd1–/+) 16.0–0–0 (better 16.Qe8 Nc6 17.b5+–) 16...Qg6–/+ 17.Qh3 fe4 18.Be4 Qg5 (18...Qf6–/+) 19.Bh7 (better 19.f4!? Qf6 20.Qg3–/+) 19...Nh7–+ 20.Qh7 Kf8 21.Kb1 (21.f4 Qf6–/+ (21...Qf4 22.Rdf1 Qf6 23.Rf6 Ke7 24.Qg7 Kd8 25.Rf8 Bd7 26.Re8 Be8 27.Rh7 Bd7 28.Qf6 Kc8 29.Qf8 Be8 30.Qe8; 21...Qg2? 22.Rdg1 Qg1 23.Rg1+–)) 21...Qf5 (21...Qg2? 22.Rdg1 Qg1 23.Rg1+–) 22.Qh2 (22.g4 Qh7 23.Rh7 Nd7–+) 22...e5 (22...a5 23.g4 Qf6 24.b5–+) 23.Nf3 (better 23.de5!? de5 24.Nc4–/+) 23...e4–+ 24.g4?? (better 24.Nh4 Qf7 25.Qg3–+) 24...Qf3 25.g5 (25.Rdg1 Nc6–+) 25...Qf5 26.Qh7 (26.Rdg1 Be6–+) 26...Qh7 (26...Qf2 27.Rdf1 e3 28.Bc1+=) 27.g6 (27.Rh7 d5–+) 27...Kg8 (better 27...Qg6 28.Rdg1 Qf5–+) 28.Rh7 (28.gh7 Kh8–+) 28...Bf5 (28...d5 29.Rg1–+) 29.d5 Bg6 (better 29...Re7–+) 30.Rg7+– Kf8 31.Rg6 (better 31.Rh1 Re5 32.Be5 de5 33.Rc7+–) 31...Ke7 (31...Nd7 32.Rdg1+–) 32.Re6 (32.f3 Kd7 33.fe4 a5+–) 32...Kd8 (32...Kd7 33.Re8 Ke8 34.Re1+–) 33.Re8 (33.Bf6!? Kd7 34.Rg1 Rf8 35.Rg7 Kc8+–) 33...Ke8 34.Be5?? (34.Re1 c6 35.Re4 Kd7+–) 34...Kd8?? (better 34...de5!? 35.Re1 Ke7 36.Re4 Nd7–+) 35.Bd6?? (better 35.Bf6 Kd7 36.Re1+–) 35...Nd7?? (35...cd6 36.Rg1–/+) 36.Re1?? (better 36.Rg1 cd6 37.Rg8 Kc7 38.Ra8+–) 36...cd6–/+ 37.Re4 Kc7 (better 37...Rc8–/+) 38.Re6? (better 38.c4–/+) 38...Rc8 (38...Rf8!? 39.Re2–+) 39.Rd6 (39.Rd6 Kd6 40.Kb2–+). TwelveTeen (2215) – glasswindow4 (2190), lichess.org, 2017. (=1.a3 f6 2.b4 g6 3.Bb2 Nh6)

4.e3 Nf7 5.h4 Bg7 (5...e5 6.h5=) 6.h5 (6.d4 d5=) 6...g5 (6...d5 7.d4=) 7.Ne2 (7.d4 d6=) 7...h6 (7...d5 8.Ng3=) 8.Ng3 0–0 9.Nf5 d6 (9...d5 10.Ng7 Kg7 11.d4+=) 10.Ng7 Kg7 11.c4 (11.Be2 e5+=) 11...a6 (11...e5 12.Be2+=) 12.Nc3 (12.Qc2 Rg8+–) 12...c6 (12...e5 13.Be2+=) 13.Qc2 b5?? (better 13...f5+–) 14.Qg6+– (14.cb5?! Nh8 15.bc6 Nc6+–) 14...Kh8 15.Ne4 (better 15.Bd3 f5 16.Ne4 e5 17.Nf6 Qf6 18.Qf6 Kg8 19.Qg6 Kh8 20.c5+–) 15...Rg8 (15...Nd7 16.Bd3 Nde5 17.Be5 Ne5 18.Qh6 Kg8 19.Nf6 Kf7 20.Bg6 Ke6 21.Nh7+–) 16.Qf7 Nd7 17.Bd3 (better 17.cb5 ab5 18.Bd3+–) 17...bc4?? (better 17...Rg7 18.Qg6 Rg6 19.hg6 Kg7=+) 18.Ng5! (18.Bc4?! Rg7=+) 18...Rg7 (18...Rg5 19.Qh7 Mate attack; 18...hg5 19.Qh7 Mate attack) 19.Qg7! Kg7 20.Ne6 Kf7 (20...Kh8 21.Nd8 cd3 22.Nc6+–) 21.Nd8 Ke8 22.Bc4 (better 22.Ne6 cd3 23.Nc7 Kd8 24.Na8+–) 22...Ne5 (22...Kd8 23.d4 c5+–) 23.Be5 Kd8 24.Bf4 d5 25.Be2 Bf5 26.Bh6 Kc7 27.Bg7 Rg8 28.h6 Kd6 29.g4 (29.h7 Bh7 30.Rh7 Ra8+–) 29...Bg6 30.Rc1 (30.h7 Bh7 31.Rh7 Ra8+–) 30...Bh7 31.f4 (31.Ba6 Rb8+–) 31...Rc8 32.f5 (32.Ba6 Ra8 33.Bb7 Ra3+–) 32...c5 33.bc5 Rc5 34.Rc5 Kc5 35.Ba6 d4 36.e4 (better 36.Bf8 Kb6 37.Bf1 de3 38.de3 Kc6 39.Be7 Bg8+–) 36...d3 37.Bd3 Kd6 38.Ke2 Ke5 39.Rc1 (better 39.g5 Bg8+–) 39...Kf4 40.Kf2 Kg4 41.Rg1 Kf4 42.Bc2 Ke5 43.d4! Kd6 (43...Kd4 44.Bf8 Combination) 44.Ke2 e6 45.Ke3 (45.Bf8 Kc7 46.Rg7 Kd8 47.fe6 Kc8 48.Rh7 Kb8 49.e7 Kc7 50.e8Q Kb6 51.Bc5 Ka5 52.Ra7) 45...e5 46.Bf6 ed4 47.Kd4 Kd7 48.Be5 (48.Rg7 Kc8 49.Bb3 Kb8 50.Be5 Kc8 51.Be6 Kd8 52.Bf6 Ke8 53.Bd7 Kf8 54.Be7) 48...Ke8 (48...Kc8 49.f6 Bg6 50.Rg6 Kd7 51.Ba4 Ke6 52.h7 Kf7 53.Rg7 Ke6 54.Bb3) 49.Rg7 (49.Ba4 Kd8 50.f6 Bg6 51.Rg6 Kc8 52.Bc6 Kd8 53.Rg8) 49...Kf8 (49...Kd8 50.Bd3 Kc8 51.Ba6 Kd8 52.Bf6 Ke8 53.Bb5 Kf8 54.Be7) 50.Ba4 Bf5 51.Bd6 1–0. FeegLood (2665) – kayhiking (1935), lichess.org, 2015.

3.a4 Bg7

4.b5 a6 5.d4 d6 6.e3 e6 7.c4 Ne7 8.Nf3 c5 9.Be2 0–0 10.0–0 cd4 11.Nd4 e5 12.Nf3 Nd7 (12...ab5 13.cb5 d5 14.Qd2+=) 13.Nbd2 (better is 13.Qd6 Nf5 14.Qd5 Kh8 15.Rd1+–) 13...Nc5= 14.h3 Be6 15.Nh2 Nf5 16.Bf3 Nh4 17.Bb7?? (better is 17.Bd5 Bd5 18.cd5=) 17...Nb7–+ 18.a5 (18.f4 Qb6 19.Ra3 ab5 20.cb5 Nf5–+) 18...ab5 19.cb5 Na5 20.Ndf3 Nf3 21.Nf3 d5 22.Qd2 Nc4 23.Qb4 Re8 24.Bc3 Bf8 25.Qb3 d4! 26.ed4 ed4 27.Nd4 Bf7 28.Rad1? Ne3 29.Qb2 Nd1 30.Rd1 Ra2 31.Qb1 Bc5 32.Nc6 Qb6 33.Bf6 Bf2 34.Kh1 Bc5 35.Qd3 Rae2 36.Qd7 Re1 37.Re1 Re1 38.Kh2 Bg1 39.Kg3 Qe3 40.Kg4 h5 41.Kh4 Bf2 42.g3 Qg3# 0–1. 55aa55 – natural2011, playok.com, 2012.

4.b5 c6 5.g3 cb5 6.ab5 b6 7.Bg2 d5 8.c4 Bb7 9.Nc3 e6 10.cd5 ed5 11.Qb3 Ne7 12.Nf3 0–0 13.Nd4 Kh8 14.Ne6 Qd6 15.Nf8 Bf8 16.Ba3 Qe6 17.Be7 Qe7 18.Nd5 Bd5 19.Qd5 Nd7 20.Qa8 Qe5 21.Qa7 Qa1 22.Qa1 1–0. wk1234 – gunard, playok.com, 2012.

4.b5 e5 5.g3 a6 6.Nc3 ab5 7.ab5 Ra1 8.Qa1 Qe7 9.Ba3 d6 10.Nd5 Qe6 11.Nc7 Kf7 12.Ne6 Be6 13.Bg2 Ne7 14.Bb7 Rd8 15.d3 Bh6 16.c4 d5 17.cd5 Nd5 18.Bd5 Bd5 19.Nf3 g5 20.0–0 g4 21.Nd4 Nd7 22.b6 Re8 23.Nf5 Bg5 24.Nd6 Kf8 25.Ne8 Ke8 26.Qc3 Nb6 27.Rb1 Nd7 28.Qc8 Kf7 29.Qd7 Kg6 30.Qd5 h5 31.Qe4 f5 32.Qe5 Bf6 33.Qe6 Kg5 34.Rb6 h4 35.Qf6 Kh5 36.Qf5 1–0. wk1234 – columbofilul, playok.com, 2012.

4.b5 e5 5.g3 Ne7 6.Bg2 d5 7.Nf3 d4 8.e3 de3 9.de3 Qd1 10.Kd1 0–0 11.Ke2 Bg4 12.Rd1 e4 13.h3 Bf3 14.Bf3 ef3 15.Kf3 c6 16.Nc3 f5 17.Ra2 Bc3 18.Bc3 Nd5 19.Bb2 a6 20.c4 Nf6 21.bc6 Nc6 22.Rd6 Nh5 23.g4 fg4 24.Kg4 Ng7 25.Rd7 Rf7 26.Rd6 Raf8 27.f4 Nf5 28.Bc1 Nd6 29.c5 Nf5 30.Rb2 Re8 31.h4 Ne3 32.Be3 Re3 33.Kg5 Rg3 34.Kh6 Rg4 35.h5 gh5 36.Kh5 Rgf4 37.Rg2 Rg7 38.Rd2 Rf5 39.Kh4 Rc5 40.Rd6 Rc4 41.Kh3 Ra4 42.Rd5 Ra1 43.Kh2 a5 44.Rd2 a4 45.Rb2 a3 46.Re2 Rb1 47.Re8 Kf7 48.Ra8 Rb2 49.Kh3 Rb1 50.Kh2 Rb2 51.Kh3 a2 52.Ra7 Kg6 53.Ra4 Nb4 54.Ra3 Rb1 55.Rg3 Kf7 56.Rf3 Kg8 57.Ra3 a1Q 58.Ra1 Ra1 59.Kh2 Nc6 60.Kh3 Rh1 0–1. wk1234 – jolarobcio, playok.com, 2012.

4.b5 e6 5.g3 Ne7 6.Bg2 d5 7.Nf3 e5 8.0–0 Bg4 9.h3 Bf3 10.Bf3 e4 11.Bg2 Nd7 12.d3 0–0 13.de4 de4 14.Be4 f5? (14...Nc5!? 15.Bg2 f5 16.Bg7 Kg7+/–) 15.Bb7 (better is 15.Bg7 Kg7 16.Bb7+–) 15...Bb2 16.Ba8?? (better is 16.Ra2 Rb8 17.Bd5 Nd5 18.Qd5 Rf7 19.Rb2+–) 16...Ba1–/+ 17.Bc6 Nc6 18.bc6 Nc5 19.Qd8 Rd8 20.Na3 Bc3 21.Nb5 Na4 22.Na7 Rd2 23.Nb5 Ba5?? 24.Ra1= Rc2 25.Ra4 Bb6 26.Ra8 Kf7 27.Rc8 Rc5 28.Na3 Ra5 29.Nc4+/– Rc5 30.Nb6 cb6 31.e3 b5 32.Kf1 b4 33.Ke2 b3 34.Kd3 b2 35.Rb8 Rc6 36.Rb2 Rd6 37.Ke2 Ke6 38.Rb7 h5 39.g4 hg4 40.hg4 fg4 41.Rb4 Kf5 42.Rf4 Kg5 43.Re4 Rd7 44.Re5 Kf6 45.Re4 Kf5 46.Rc4 Re7 47.Rc5 Re5 48.Rc7 g5+= 49.Rf7 Kg6 50.Rf8 Rf5 51.Rg8 Kf6+= 52.e4 Re5 53.Ke3 Kf7 54.Rb8 Ra5 55.Rb7 Kf6 56.Rb6 Kf7 57.e5 Re5+= 58.Kd4 Rf5 59.Rb7 Kg6 60.Rb6 Kh5–+ 61.Rb2. wk1234 – rhasanov58, playok.com, 2012.

4.g3 b6 5.Bg2 c6 6.b5 Bb7 7.Nc3 Nh6 8.Nf3 0–0 9.0–0 cb5 10.ab5 a6 11.Nd4 ab5?? (better is 11...Bg2 12.Kg2 e5=) 12.Bb7+– Ra1 13.Qa1 Qc7 14.Bg2 f5 15.Ncb5 Qc5 16.c4! Nc6 (16...Qc4 17.d3 Decoy) 17.Nc6 Bb2 18.Qb2 dc6 19.Nc7 Qc4 20.Rc1 Qe2 21.Rc6 f4 22.Bd5 Nf7 23.Ne6 Re8 24.Qg7# 1–0. wk1234 – gunard, playok.com, 2012.

3.b5 b6

4.a4 a6 5.c4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 cb5 9.cb5 Bb7 10.Nc3 Qc7 11.Nf3 e5 12.Qb3 Ne7 13.Be2 Nf5 14.0–0 d6 (14...e4 15.Ne1 Bd6 16.h3+–) 15.Bc4 (15.Nd5 Bd5 16.Qd5 Ne7+–) 15...Nd7 (15...Bf3 16.gf3 Nh4 17.Bd5+=) 16.d4 (16.Nd5 Qc8+–) 16...ed4 (16...Bf3!? 17.gf3 Bg7+–) 17.Nd4+– (17.ed4?! Bf3 18.gf3 Bh6+–) 17...Nc5 (17...Nd4!? 18.ed4 Kd8+–) 18.Qa2+– Kd7 (18...Bg7 19.Nf5 gf5 20.Nd5 Bd5 21.Bd5+–) 19.Nf5 gf5 20.Nd5 Bd5 21.Bd5 Bg7 22.Bc6 Ke7 23.Qd5 Ne4 (23...h6 24.Qf5 Qc8 25.Qg6+–) 24.Qf5 Nd2 (24...Nc5+–) 25.Rd1 Nc4 (25...Qc8 26.Qd3 Nc4 27.Qc4 Qe6+–) 26.Rd4 (better 26.Qg4 Kf8 27.Qc4+–) 26...Ne5 27.Qe4 (27.Bb2 Qc8 28.Qc2 f5+–) 27...h6 (27...f5 28.Qb1+–) 28.f4 (better 28.Rd1 f5 29.Qf5+–) 28...Re8?? (28...f5 29.Qb1 Nc6+–) 29.fe5 fe5 30.Ra4 (better 30.Qg6 Rf8 31.Rf4 ef4 32.Bg7+–) 30...Kf6 (30...Rf8+–) 31.Qh4 (31.Qh7 Qf7 32.Rf4 Ke6 33.Rf7 Kf7 34.Qf5 Bf6 35.Qh5 Ke6 36.Qe8 Kf5 37.Bd7 Ke4 38.Qg6 Ke3 39.Qg3 Kd2 40.Qc3 Ke2 41.Bg4) 31...Ke6 (31...Kg6 32.Be8 Kh7 33.Qe4 Kh8 34.Bc6+–) 32.Qh5 (32.Qg4 Ke7 33.Qg7 Kd8 34.Ra8 Qb8 35.Rb8) 32...Re7 (32...Rf8 33.Qg4 Ke7 34.Qg7 Rf7 35.Qh6 Qb8 36.Qh4 Rf6 37.Bd5 Qb7 38.Qh7 Ke8 39.Qb7 Rf1 40.Kf1 Kf8 41.Qf7) 33.Qg6 Bf6 34.Qh6 (34.Qg4 Kf7 35.Bd5 Re6 36.Qe6 Kg6 37.Qe8 Qf7 38.Qf7 Kg5 39.h4 Kf5 40.g4) 34...Rg7 (34...Rh7 35.Qg6 Rh8+–) 35.e4 Qf7 (35...Ke7 36.Ra8 Kf7+–) 36.Bd5 (36.Bd5 Kd7 37.Qh3 Ke7 38.Qc8 Qe8 39.Qe6 Kf8 40.Qf6 Rf7 41.Bf7 Qe7 42.Ra8 Qe8 43.Re8; 36.Qh3 Rg4 37.Qb3 Ke7 38.Ra7 Kd8 39.Qf7 Rg2 40.Kg2 d5 41.Qd7) 1–0. AleksandrNekhoroshik – Hyco5, lichess.org, 2020.

4.a4 Bb7 5.c4 Bg7 (5...a6 6.d4=) 6.Qb3 (6.Nf3 a6=) 6...e6 7.f3 d5 8.e3 Ne7 9.d4 c6 10.Bd3 a6 11.Ne2 Nd7 (11...0–0 12.0–0=) 12.Nd2 (12.Nf4 Nf8+=) 12...0–0 (12...ab5 13.ab5 Ra1 14.Ba1=) 13.Ng3 (13.Nf4 Kf7+=) 13...e5 (13...c5 14.0–0=) 14.e4 (14.cd5 cd5 (14...Nd5? 15.bc6 Bc6 16.Bc4+–) 15.ba6 Ba6 16.Ba6 Ra6=) 14...f5 (14...de4 15.Nge4 ed4 16.Bd4=) 15.ef5 (15.cd5!? cd5 16.ba6 Ba6 17.ed5+–) 15...gf5 (worse 15...Nf5 16.Nf5 gf5 17.ba6 Ba6 18.cd5 cd5 19.Ba6 Ra6 20.Qd5 Kh8 21.Qc4+= (worse 21.de5 Ne5 22.Qd8 Rd8 23.Be5 Be5–/+)) 16.Nf5?? (better 16.cd5 cd5 17.Nh5=) 16...Nf5–+ (16...Rf5 17.Bf5 Nf5 18.bc6 Bc6 19.cd5–/+) 17.Bf5 (17.bc6 Bc6 18.cd5 Bb7 19.de5 Qh4 (worse 19...Be5 20.Be5 Ne5 21.Be4–/+) 20.Ke2 Nd4 21.Bd4 Qd4–+) 17...Rf5 18.Qe3?! (18.bc6 Bc6 19.cd5–+) 18...ed4 19.Bd4 (19.Qe6 Rf7 20.0–0 c5 21.ba6 Ra6 22.cd5 Nf8–+) 19...Bd4 (better 19...Qh4 20.Kd1 Qd4 21.Qd4 Bd4–+) 20.Qd4 Qe7 21.Kf2 Re8 (21...c5!? 22.Qd3 Qh4 23.g3–+) 22.Rae1 Re5 23.Re5 Ne5 24.cd5 (24.bc6 Bc6 25.cd5 Rd8–+) 24...cd5 (better 24...c5 25.Qe4 ab5 26.ab5 Rd8–+) 25.g4? (25.ba6 Ba6 26.Qd5 Kg7–+) 25...Qf7 (25...Qh4!? 26.Kg1 ab5 27.ab5–+) 26.h4? (26.Re1 Qf6 27.Kg3 Kg7 28.ba6 Ba6 29.Qd5 h5–+) 26...Bc8 (26...ab5 27.ab5 Qe6 28.Rc1–+) 27.Rg1 (27.Kg2 Ng6 28.Kg3 ab5 29.ab5 Re2–+) 27...Qf6 (27...ab5 28.ab5 Bd7 29.g5–+) 28.Qd5 (28.Kg2 ab5 29.ab5 Kg7–+) 28...Be6 29.Ne4 (29.Qd4 Qh4 30.Kg2–+) 29…Qf3 (29...Qf3 30.Ke1 Bd5 31.Rg3 Qe4 32.Kd2 Qd4 33.Kc1 Rc8 34.Kb1 Qd1 35.Kb2 Qc1; 29...Bd5? 30.Nf6 Kf8 31.Ne8 ab5 32.Nf6+–) 0–1. lindsey000 – bzipper, gameknot.com, 2017.

4.c4 Bb7 5.d4 c5 6.dc5 bc5 7.Nh3 Qa5 8.Qd2 Qd2 9.Nd2 a6 10.a4 ab5 11.cb5 Bd5? (better is 11...d5+–) 12.a5 Bg7 (12...Bh6 13.e4 Bd2 14.Kd2 Be4 15.a6+–) 13.e4 Be6 14.Ng5 Nh6 15.Ne6 de6 16.a6 (better is 16.Nb3 Nd7 17.b6 0–0–0+–) 16...0–0 (16...Nd7+–) 17.a7 Nd7 18.Bc4 Kf7 (18...Rfc8 19.Be6 Kf8 20.Bd7+–) 19.Ra6 f5 (19...Rfc8 20.Be6 Ke8+–) 20.Be6 Ke8 1–0. Trkn – guest297, ICC, 2005.

4.e3 a5 5.Nf3 a4 6.c4 (6.Bd3 Nh6+–) 6...c5 (6...Bb7!?+–) 7.Bd3 e5 (7...Bb7 8.h4 Nh6 9.h5+–) 8.Be4 (8.Ne5 Bg7 9.Nf3 Bb7+–) 8...Ra7 9.Qc2 (9.0–0 d6 10.d4 cd4 11.ed4 f5 12.Bc6 Nc6 13.bc6 e4+–) 9...Ne7 (9...d6 10.Na3+–) 10.Ne5+– fe5?? (10...a3 11.Bc3 Bg7+– (11...fe5?? 12.Be5 Rg8 13.Bb8+–)) 11.Be5 Rg8 12.Bb8 Rc7 (12...Ra5 13.Bd6+–) 13.Bc7 Qc7 14.Nc3 Bb7 15.Nd5 (15.Bb7 Qb7 16.0–0 Kf7+–) 15...Bd5 (15...Nd5 16.cd5 Qe5 17.0–0 Bd5 18.Bd5 Qd5 19.Rac1+–) 16.cd5 (worse 16.Bd5 Nd5 17.cd5 Qe5+–) 16...Qb7 (16...Qe5 17.d4 cd4 18.ed4 Qd4+–) 17.d6 (17.d6 Qb8 18.de7+–) 1–0. DEFFM – Guhfffhtfufgfjd, freechess.org, 2019.

4.e3 Bb7 5.c4 Bg7 6.Nf3 Bf3 7.Qf3+– (worse 7.gf3 a6=) 7...c6 8.a4 d6 (8...a6 9.Nc3+–) 9.Nc3 Qc7 10.Be2 Nd7 (10...e6 11.Ne4+–) 11.0–0 (11.Qc6 Qc6 12.bc6 Ne5+–) 11...Nh6 (11...Rc8 12.Qh3+–) 12.d4 (better 12.Qc6 Qc6 13.bc6+–) 12...0–0?? (12...Rc8 13.Na2+–) 13.Bd3 (better 13.bc6 Ne5 14.de5 fe5 15.Qd5 Nf7 16.a5 ba5 17.c5+– (17.Ra5?! e6 18.Qb5 Rfb8+=)) 13...cb5 (13...Rac8 14.bc6 Qc6 15.Be4+–) 14.ab5 (14.Nb5 Qc8 15.Be4 Nf7 16.Ba8 Qa8+–) 14...f5 15.Nd5 Qd8 16.Nb4 e6 (16...e5 17.Qb7+–) 17.Nc6 Qc7 18.Ra2 Nb8 (18...e5 19.Ne7 Kh8 20.Qc6 Qc6 21.Nc6+–) 19.Nb4 (19.Nd8 Rd8 20.Qa8 Na6 21.Qd8 Qd8 22.Ra6 Qg5+–) 19...Nd7 20.Rfa1 Nf7 21.Nc6 (better 21.Qc6 Rfc8 22.Ra7 Ra7 23.Ra7 Qa7 24.Qc8 Nf8 25.Qa6+–) 21...Nb8?? (21...a5 22.ba6 Ng5 23.Ne7 Kf7+–) 22.Ra7 Ra7 23.Ra7 (23.Na7?! Ng5 24.Qf4 Ne4+–) 23...Ng5 24.Qe2 Qc8 (24...Qa7 25.Na7 Nd7+–) 25.Ne7 Kh8 26.Nc8 Rc8 27.d5 (27.d5 Bb2 28.Qb2 e5 29.f4+–) 1–0. AhmedSultanov (1645) – Gozvykos (1660), lichess.org, 2019.

4.e3 Bb7 5.d4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 (8...Bg7 9.Nf3+=) 9.c4 (9.Nf3 Nh6+–) 9...Bg7 (9...cb5 10.cb5 e6 11.Nf3+=) 10.Nf3+– cb5 11.cb5 Bf3 (11...f5!?+–) 12.Qf3 d6 (12...f5 13.Bd3+–) 13.Bc4 (13.Qb7 Nd7 14.Bc4 Qb8+–) 13...Nh6 (13...Qc8 14.Bb3 e6 15.Nc3+–) 14.Qd5 Rf8 (14...Qc8 15.0–0+–) 15.0–0 Nf5 (15...Qc8 16.Nd2+–) 16.e4 Nh6 (16...Nh4 17.f4 f5 18.g3 fe4 19.gh4+–) 17.Qb7 Nd7 (17...d5 18.Bd5 Nf7 19.e5 fe5 20.de5 Be5 21.Be5 Ne5 22.Rc1+–) 18.Nc3 (better 18.Rc1!? Rh8+–) 18...e5 (18...e6 19.Be6 Ke7 20.Bh3+–) 19.Qc6 ed4 (19...Nf7 20.Nd5 Qb8 21.de5 fe5+–) 20.Nd5 f5 (20...Nf7 21.Bd4 Qb8 22.Bf6 Nfe5 23.Nc7 Qc7 24.Qc7 Bf6+–) 21.Qd6 fe4 22.Qe6 Qe7 23.Qe7 1–0. GuestCMZR – GuestZXQK, freechess.org, 2020.

4.e3 Bb7 5.Nf3 Bg7 6.c4 d6 7.Be2 Nd7 (7...e5 8.0–0+=) 8.0–0 e5 9.d4 e4 10.Nfd2 Ne7 (10...f5 11.Nc3+=) 11.Nc3 (11.d5!?+–) 11...f5+= 12.Qb3 c5 (12...a6 13.a4+=) 13.bc6+– Nc6 14.Nb5 Nf6 (14...Qb8 15.Rab1+–) 15.d5 Na5 (15...Ne5!?+–) 16.Qa3+– 0–0 17.Nd6 (17.Qd6?! Qd6 18.Nd6 Ba6+=) 17...Ba6 18.Rfc1 (18.Nb3 Rb8+–) 18...Ne8? (18...Nd5!? 19.Bg7 Kg7 20.cd5 Be2+=) 19.Bg7 (19.Ne8 Bb2 20.Qb2 Qe8+–) 19...Kg7 (19...Ng7 20.Nb3 Rf6 21.Na5 Qd6 22.c5 bc5 23.Ba6 (23.Qc5? Be2 24.Nc6 Bd3–+) 23...Qa6 24.Qc5+–) 20.Qc3 (20.Ne8 Re8 21.Nb3 Nb3 22.ab3 Bb7+–) 20...Kg8 21.Ne8 Qe8 22.Nb3 Nb7 23.Nd4 (23.Qb4 Qc8+–) 23...Nc5 24.Bd1 (24.a4 f4+–) 24...Rc8 25.a4 (better 25.Qa3!?+–) 25...Nd3= The backward pawn on c4 becomes a target 26.Ne6 Rc4?? (better 26...Rf7 27.Bb3 Nc1 28.Rc1 Qd7=) 27.Qg7 1–0. AhmedSultanov (1745) – metin1 (1760), lichess.org, 2019.

4.e3 Bb7 5.Nf3 Bg7 6.Bc4 e6 7.Ng5 (better 7.0–0+=) 7...d5?? (7...Bg2 8.Rg1 Bb7–/+ (8...fg5?? 9.Bg7 Bb7 10.Bh8+–)) 8.Ne6+– Qd7 9.Ng7 Qg7 10.Bb3 (10.Qf3 Qd7+–) 10...Ne7 11.0–0 0–0 (11...Nd7 12.Nc3+–) 12.f3 (12.e4 a6 13.ed5 Kh8+–) 12...Qh6 (12...c5 13.bc6! Nbc6 14.e4+–) 13.c4 (13.e4 Kg7+–) 13...dc4 14.Bc4 Kg7 15.Qb3 Nd7 16.Nc3 Nc5 (16...c6 17.Ne4 cb5 18.Bb5+–) 17.Qb4 (17.Qc2 a6+–) 17...Rad8 (17...a5 18.Qa3 Nf5 19.Na4 Na4 20.Qa4+–) 18.Ne4! Nd5? (18...Be4 19.fe4 Combination; 18...Ne4 19.Qe7 Double attack (19.Qe7 Pinning; 19.Qe7 Deflection; 19.Qe7 Decoy)) 19.Bd5 (better 19.Qa3!? Qh4 20.Nc5 bc5 21.Qc5 Nb6+–) 19...Rd5 20.Nc5 (20.Bd4 Ne4 21.fe4 Rd7 22.Rf6 Rf6+–) 20...Rc5 21.Qa3 (21.Rac1 Qh5 22.Bd4 Rc1 23.Qe7 Rf7 24.Bf6 Kg8 25.Qe8 Rf8 26.Qe6 Rf7 27.Rc1 Qd5 28.Qd5 Bd5+–) 21...Qh5 (21...Qg5 22.Rab1+–) 22.Qa7 (22.Rac1 Rf7 23.Qa7 Rc1 24.Rc1 Qb5 25.Bf6 Kf6 26.Qb7 c5+–) 22...Bd5 23.Bd4?? (better 23.Qa3+–) 23...Rb5?? (better 23...Ra8 24.Qa8 Ba8 25.Bc5 Qc5–/+ (25...bc5?! 26.Rfc1=)) 24.Qc7 Rf7 25.Qd6 Qf5 (25...Bc4 26.Rfc1 Qd5 27.Bf6 Rf6 28.Qc7 Rf7 29.Qc4 Qc4 30.Rc4+–) 26.a4 (26.Bb6?! Rd7 27.Qg3 Rb6+=) 26...Rb3 (26...Ra5 27.e4 Qe6 28.Qe6 Be6 29.Bb6+–) 27.e4 (27.Bb6?! Rd7 28.Qc5 Qd3+–) 27...Be4 (27...Rd7 28.Qb8 Qe6 29.ed5 Qd5+–) 28.fe4 Qe4 (28...Qd7 29.Rf6 Qd6 30.Rd6 Kf8 31.Rb6 Rd3+–) 29.Bb6 (better 29.Rae1 Qh4 30.Re7+–) 29...Rd3 30.Qf4 Qe2 (30...Qf4 31.Rf4 Rd2 32.a5+–) 31.Bd4 Rd2 32.Bf6 Kg8 33.Qb8 (better 33.Qg5!? Rf6 34.Rf6 Rd1 35.Rd1 Qd1 36.Rf1 Qd4 37.Kh1 Kg7+–) 33...Rf8 34.Qb3 Rf7 35.Bc3 (35.Qg3 Qe4 36.Bc3 Rg2 37.Qg2 Qg2 38.Kg2+–) 35…Qg2 0–1. AleksandrNekhoroshik (1665) – RDF1977 (1695), lichess.org, 2021.

4.e3 Bb7 5.Nf3 Bg7 6.Be2 e6 7.c4 Ne7 8.0–0 d6 (8...a6 9.Nc3+=) 9.d4 Nd7 10.Nc3 e5 11.a4 ed4 (11...a6 12.Qb3+=) 12.Nd4+– f5?? (better 12...Nc5+–) 13.Ne6+– (13.Ne6 Qb8 14.Ng7 Kf7 15.Nd5+–) 1–0. AhmedSultanov (1615) – OrI2009 (1605), lichess.org, 2019.

4.e4 e5 5.d4 ed4 6.Bd4 a6 7.Nf3+–.

4.e4 e5 5.d4 ed4 6.Bd4 Bb7 7.Nf3+–.

4.e4 e5 5.d4 Bd6? 6.d5?? (better 6.de5 Bb4 7.Bc3+–) 6...Nh6 7.g4 (7.Nf3!?+=) 7...0–0 8.Bc1 (8.Nc3=) 8...g5 (better 8...Nf7=+) 9.h4+= Bc5 10.d6 cd6?? (better 10...Bb7 11.Bc4 Kg7=) 11.Qd5+– Nf7 (11...Kg7 12.Qa8 Qc7+–) 12.Qa8 Qc7 13.Qd5?? (better 13.a3+–) 13...Qb7?? (better 13...Bd4!? 14.Qb3 Ba1 15.hg5 Bb7+–) 14.Qc4 (14.Nc3!? Bb4 15.Nge2 Qd5 16.ed5 Bb7+–) 14...a6?? (14...Bd4 15.Bd3 Ba1 16.hg5 fg5 17.Nf3+–) 15.a4 (better 15.Nc3 ab5 16.Qb5 gh4 17.Rh4 Nc6+–) 15...a5?? (better 15...Bd4 16.Bd3 Ba1 17.hg5 fg5+–) 16.Nc3+– Kh8 (16...Qa8 17.hg5 fg5 18.Nd5+–) 17.Nf3 h6 (17...Nc6 18.bc6 dc6 19.hg5 fg5 20.Bg5 Bf2 21.Kd2+–) 18.Nd5 (better 18.hg5!? Bb4 19.gf6 Bc3 20.Qc3 Qe4 21.Be2 Bb7 22.Bh6 Rc8+–) 18...Kg7 19.hg5 (19.Ne7 d5 20.Nf5 Kg8 21.ed5 d6+–) 19...fg5 (19...hg5 20.Be3+–) 20.Ne7 (20.Ba3 Nd8 21.Be2 Ne6+–) 20...Nh8 (20...d5 21.Nf5 Kg8 22.ed5+–) 21.Nf5 Kg6 (21...Rf5 22.gf5 Nf7+–) 22.Rh6 1–0. patrick317 – thebarra, gameknot.com, 2019.

4.e4 e5 5.d4 Bg7 6.de5 (6.Nf3 a6+–) 6...fe5+– 7.Nf3 d6 (7...Bb7 8.Bc4+– (worse 8.Ne5 Qe7 9.f4 d6=+)) 8.Bc4+– Nh6 (better 8...Bb7 9.Nc3 a6+–) 9.Qd5 c6 10.bc6 Qc7 11.Ng5 (better 11.Nc3 a6 12.Ba3+–) 11...Rf8? (11...Nc6 12.0–0 a6 13.Nc3+–) 12.Ne6 (better 12.Nc3 Kd8 13.Rd1+–) 12...Be6 13.Qe6 Qe7?? (13...Kd8 14.Na3 Nc6+–) 14.Qc8 Qd8 15.Qb7 Nc6 16.Qc6 Ke7 17.Nc3 Rf6 (17...Rf7 18.Bf7 Kf7 19.Nb5+–) 18.Nd5 Kf7 (18...Kf8 19.Nf6 Bf6+–) 19.Nf6 Kf6 20.Be5 Ke5 21.Qd5 Kf4 (21...Kf6 22.Qe6 Kg5 23.h4 Kh5 24.Be2 Ng4 25.Qg4 Kh6 26.Qf4 g5 27.hg5 Kg6 28.Qf5) 22.g3 Kg4 (22...Kf3 23.Kf1 Kg4 24.h3 Kf3 25.e5) 23.h3 Kf3 24.e5 1–0. GuestXZPW – GuestJZQT, freechess.org, 2020.

4.Nf3 Bg7 5.e4 Bb7 6.Bd3 (6.Nc3 a6+=) 6...Nh6 7.h3 (7.a4 a6+=) 7...e5 8.Qe2 d6 9.Qe3 Nd7 10.c4 (10.0–0 Nc5=) 10...Qe7 (10...a6 11.Nc3=) 11.Nc3 0–0–0 (11...f5!?=) 12.a4+– Nc5 13.Bc2 f5 14.Nd5 Bd5 15.ed5 f4 16.Qc3 Nf5 17.g4?? (better 17.Bf5!? gf5 18.a5=) 17...Nd4 (better 17...e4 18.Qb4 ef3 19.Kd1 Qe2 20.Kc1 Nd4 21.Bd4 Bd4–+) 18.0–0–0?? (better 18.Kd1 Nc2 19.Kc2–/+) 18...Ne2–+ 19.Kb1 Nc3 20.Bc3 e4 21.Rhe1 (21.Nd4 Qh4–+) 21...Bc3 22.dc3 Qf6 23.Nd4 e3 (better 23...Rde8 24.f3 ef3 25.Rg1–+) 24.fe3 f3 (24...Qh4 25.ef4 Qh3 26.Kb2–+) 25.Rf1 Rde8 (25...f2!? 26.Rd2 Qh4 27.Rdf2 Qh3 28.Nc6–+) 26.Rf3 Qg5 27.Re1 (27.Nc6 Kb7–+ (27...Re3?! 28.h4–+)) 27...Rhf8 28.Rf8 Rf8 29.e4 (29.Nc6–+) 29…Qd2 (29...Qd2 30.Rd1 Qc3–+) 0–1. lindsey000 – hortog, gameknot.com, 2018.

3.b5 c6

4.a4 cb5 5.ab5 Qb6 (5...d5 6.e4+=) 6.e3 d6 (6...d5 7.Qf3+/–) 7.Nf3 (7.Bd4 Qd8+/–) 7...Bg7 (7...a6 8.e4+/–) 8.g3 (8.Bd4 Qd8 9.Ba7 Na6+–) 8...Bd7 (8...e5 9.Bc4+=) 9.c4 (9.Bd4 Qd8+/–) 9...a6 10.Bg2 a5 (10...e5 11.Nc3 Be6 12.Qa4+=) 11.Bd4 Qc7 12.b6 (better is 12.Nc3!? Qc4 13.Na4 Qb5 14.Nb6+/–) 12...Qc4= 13.Na3 Qb4 14.0–0 (14.Nc2 Qb5=+) 14...Nc6 (14...e5 15.Bc3 Qb6 16.Nc4=) 15.Nc2 Qb5 16.Rb1 Qh5 17.Qc1 (17.Na3 Nb4=+) 17...Nd4 (17...e5!? 18.Bc3 Nge7–/+) 18.Ncd4 e5 (18...Qc5!? 19.Qb2 a4=) 19.Nb5= Rc8?? (better is 19...Bb5 20.Rb5 Qg4=) 20.Nd6+– Kd8 (20...Kf8 21.Nc8 Ne7 22.Ne7 Ke7+–) 21.Nb7 Ke7 22.Qa3 Ke6 23.Nc5 (23.Qd6 Kf7 24.Qd7 Ne7 25.Ng5 fg5 26.Nd6 Kf6 27.Bd5 Qh2 28.Kh2 Bf8 29.Qe6 Kg7 30.Qe5 Kh6 31.Nf7 Kh5 32.Qg5) 23...Ke7 (23...Rc5 24.Qc5 Kf7+–) 24.b7 Rb8 25.Na6 Ke6 26.Nb8 Ne7 27.Nd7 (27.Rb6 Kf7 28.Qb3 Ke8 29.Nd7 Kd8 30.b8Q Nc8 31.Qc8 Kc8 32.Rb8 Kd7 33.Qf7 Kd6 34.Rb6 Kc5 35.Qc7 Kd5 36.Qc6) 27...Kd7 28.b8Q (28.Qd3 Nd5 29.Qd5 Ke7 30.Rfc1 Qh2 31.Kh2 Rb8 32.Rc7 Ke8 33.Qe6 Kd8 34.Qe7) 28...Rb8+– 29.Rb8 Nc6 30.Rb7 Kc8 31.Rfb1 (31...Rfb1 Qf5 32.Bh3 Nb4 33.Qa5 Kb7 34.Qb4 Kc7 35.Qc5 Kd8 36.Rb8 Kd7 37.Rb7 Kd8 38.Qd6 Qd7 39.Qd7; 31.Rg7 Qf5 32.Qf8 Nd8 33.Rc1 Kb8 34.Qd8 Qc8 35.Qc8) 1–0. MasterofDisaster – thedragon, Live Game Caissa's Web, 2004.

4.e4 d5 +=.

3.b5 d5

4.a4 Bg7 5.e3 e5 6.c4 d4 (6...Ne7 7.cd5 Nd5 8.d4=) 7.ed4 ed4 8.Qe2 (better 8.Bd3=) 8...Qe7 (better 8...Ne7!?=) 9.Bd4+– Qe2 (9...Bg4 10.Qe3+–) 10.Ne2 Ne7 11.Nbc3 b6 (11...a6 12.a5+–) 12.Nd5 (better 12.a5 ba5 13.Ra5+–) 12...0–0?? (better 12...Nd5 13.cd5 Kd7+–) 13.Nc7 (13.Ne7 Kh8+–) 13...Nf5 (13...Bb7 14.Na8 Ba8 15.a5+–) 14.Na8 Nd4 15.Nd4 f5 16.Nc7 (16.Nb3 Ba1 17.Na1 Bb7+–) 16...Bd4 17.Ra3 Bc5 18.Rd3 Rf7 (18...f4 19.Be2+–) 19.Rd8 Rf8 20.Rf8 Kf8 21.Be2 Bd6 (21...Kf7 22.Bf3+–) 22.Nd5 Be6 23.0–0 (23.Bf3 Be5+–) 23...Bd5 24.cd5 Bb4 (24...Ke7 25.d4+–) 25.d3 (25.Rc1 Ke7+–) 25...Nd7 (25...Ke7 26.Rc1+–) 26.Rb1 (26.Rc1 Bc5+–) 26...Bc5 27.Ra1 (27.Rd1 Ke7+–) 27...Ne5 (27...Ke7 28.Rd1+–) 28.a5 (28.Rd1 Bd6+–) 28...h5 (28...Nd7 29.a6+–) 29.ab6 (29.Ra4 Nd7+–) 29...Bb6 30.h3 (better 30.Re1+–) 30...a5 (30...Ke7+–) 31.ba6 Nd7 (31...Ba7 32.Rb1+–) 32.a7 Ba7 33.Ra7 Nc5 (33...Ke7 34.d4 Kd6 35.Rb7+–) 34.Ra8 (better 34.d6 Ne6+–) 34...Kf7 35.Rc8 Nb3 (35...Nd7 36.d4 Ke7 37.Bb5+–) 36.Bd1 Nd2 (36...Nd4 37.Ba4 Ke7 38.Rc4+–) 37.f3 (better 37.Rc7 Kf6 38.d6 Ne4 39.de4 fe4+–) 37...f4 (37...Ke7 38.Rc2 Nb1 39.Rc6+–) 38.Kf2 g5 (38...Ke7 39.Rb8 g5 40.Ke1+–) 39.Ke2 Nb1 40.Bb3 Na3 (40...Ke7+–) 41.d6 Kf6 42.Ra8 (42.d7 g4 43.d8Q Kf5 44.Rc5 Kg6 45.Rc6 Kf5 46.Qd5) 42...Nb5+– 43.d7 (43.d7 Nd4 44.Ke1 Nc6 45.Ba4 Nd8 46.Rd8 Kg7 47.Re8 Kh6 48.Re6 Kg7 49.d8Q Kf7 50.Qd7 Kf8 51.Re8) 1–0. afsharian – Blackmaster1, lichess.org, 2018.

4.Nc3 a6 5.e3 Bg7 6.a4 (6.Nf3 f5+=) 6...f5 7.Be2 d4? (better 7...Nf6!?+=) 8.ed4+– Bd4 9.Nf3 Be6 (better 9...Nf6+–) 10.Nd4 Qd4 11.Nd5!! Qb2 (11...Qd5 12.Bh8 Discovered attack (12.Bh8 Pinning; 12.Bh8 Deflection; 12.Bh8 Clearance); 11...Bd5 12.Bd4 Discovered attack) 12.Nc7 Kd8? (12...Kf7 13.Na8 Qe5+–) 13.Ne6 (13.Na8?! Nf6+–) 13...Kd7 (13...Kc8 14.c3 ab5 15.Nc5 ba4 16.Na4 Ra4 17.Qa4+– (worse 17.Ra4 Nf6+–)) 14.Nc5 Kd6 15.Nb7 Kc7 16.Rb1 Qe5 (16...Qa2 17.0–0 ab5 18.Bb5+–) 17.d4 Qd5 (17...Qf6 18.ba6 Na6+–) 18.b6 Kb7 19.Bf3 e6 20.Qe2 Ne7 (20...Nc6 21.Bd5 ed5+–) 21.Qe5 Nec6 22.Qc7 1–0. pierre – ttuwb, internet Microsoft, 2012.

4.e3 Bg7 5.Nf3 e6 6.c4 Ne7 7.Be2 0–0 8.0–0 c6 9.a4 Bd7 10.Nc3 Be8 (10...b6 11.d4+–) 11.Nd4 (11.d4 Bf7+–) 11...Bf7+= 12.Qb3 e5 13.Nf3 c5 (13...e4 14.Ne1=) 14.cd5+= Nd5 15.Bc4 Nc3 16.Bc3 b6 (16...Qe7 17.d4+=) 17.Rfd1 Qe7 18.d4 ed4 19.ed4 cd4 20.Bd4 (20.Nd4 a6+–) 20...Nd7 21.Re1 Qd6 (better 21...Bc4!? 22.Qc4 Qf7+=) 22.Rad1+– Qc7 (22...Rad8 23.Bc3 Qb8 24.Re7+–) 23.Rc1 (better 23.Bf7!? Rf7 24.Re7 Raf8+–) 23...Qf4 24.Bf7 Rf7 25.Rc7?? (better 25.Be3 Qd6 26.Rc6+–) 25…Qc7–+ 0–1. AhmedSultanov (1790) – Jolilaur (1780), lichess.org, 2020.

4.e3 Nh6 5.c4 Bg7 (5...dc4 6.Bc4 a6 7.Nc3+=) 6.cd5 Qd5 7.Nc3 (7.Nf3 Nd7+–) 7...Qd8 (7...Qf7 8.Qc2+–) 8.Bc4 (8.Nf3 Nf5+–) 8...Nf7 9.Nf3 0–0 (9...Nd7 10.0–0+–) 10.0–0 (10.h4 h5+–) 10...c6 (10...Nd7 11.Qe2+–) 11.a4 Bg4 (11...Nd7 12.Qe2+–) 12.d4 Kh8 13.Bf7 (13.h3 Nd6 14.Bb3 Bd7+–) 13...Rf7+– 14.Ng5 Kg8? (better 14...fg5 15.Qg4 Bf6+–) 15.Nf7+– (15.Qg4?! fg5 16.Ne4 Qd7 17.Qd7 Nd7 18.bc6 bc6 19.Ng5 Rf6+–) 15...Kf7 (15...Qd7 16.bc6 bc6+–) 16.Qg4 h5 (16...Nd7 17.Ne4+–) 17.Qf3 Nd7 (17...Qd7 18.h3+–) 18.bc6 bc6 19.Qc6 Nf8 (19...Nb6 20.Rfc1+–) 20.Nb5 (better 20.Qc4 e6+–) 20...a6 (20...Rc8 21.Qa6+–) 21.Nc7 Rc8 22.Rfc1 (22.Qc4 e6 23.Rfc1 Kg8+–) 22...Kg8 23.Rc5 (23.Ba3 f5+–) 23...Kh7 (23...Nd7 24.Qd5 Kh7 25.Ne6 Rc5 26.dc5+– (26.Nd8?! Rd5 27.Nc6 Nb6+–; worse 26.Nc5 Qb6 27.Bc3 Nf8+–)) 24.Rac1 e6 (24...Rb8 25.Ba3 e5 26.a5+–) 25.Qa6 e5 26.Rd5 Qe7 27.Qc8 ed4 28.Bd4 Qa3 29.Ne8 Bh8 (29...Kh6 30.Ng7 Qb4 31.Bc5 Qb8 32.Qb8 h4 33.Qf8 f5 34.Qh8 Kg5 35.Be7 Kg4 36.Qh4) 30.Rc7 Kh6 (30...Qe7 31.Re7 Kh6 32.Nf6 g5 33.Ng8 Kg6 34.Qc2) 31.Nf6 Qd3 (31...Qc1 32.Rc1 g5 33.Qf8 Kg6 34.Qh8 Kf7 35.Rc7 Kg6 36.Qh5) 32.Ng8 1–0. DEFFM – AnEndGame, freechess.org, 2020.

4.f4=.

3.b5 e5

4.c4 c6 5.a4 Qa5 6.e3 cb5 7.ab5+– Qc7 8.Nf3 d6 9.Be2 Be6 10.d3 d5 11.0–0 (11.cd5 Bd5 12.e4 Be6+–) 11...dc4+= 12.dc4 Bc4?? (12...Nd7+=) 13.Bc4 (better 13.Qc2+–) 13...Qc4= 14.Nc3 Bb4?? (14...Nd7=) 15.Qd2?? (better 15.Nd5 Nd7 16.Rc1+–) 15...Bc3 16.Bc3 Ne7 (16...Qb5 17.Rfd1 Nd7 18.Ra5+=) 17.Bb4 (17.Rfd1 0–0 18.Bb4 Qe6+=) 17...Qd5 (17...Qb5 18.Rfd1 Nec6 19.Bd6=+) 18.Qb2 (better 18.Rfc1!? Qd2 19.Nd2=) 18...Qb5–/+ 19.Qa3 Nec6 20.Bd6 Nd7 21.Rfb1 Qd5 22.Rd1 (22.Rb7 e4 23.Ne1 Rc8=+) 22...Qe6–/+ 23.Ne1 (23.Rab1 b6–/+) 23...Nb6 (23...Rc8 24.Qb2 b6 25.Qb5–/+) 24.Bc5 Nc4 (24...Nc8 25.Rab1 Rb8 26.Nf3–/+) 25.Qc3 (25.Qb3 Qf7 26.Qb5=) 25...b6–+ 26.Bb4 (26.Ra4 Rc8–+ (26...bc5?! 27.Rc4 0–0 28.Rc5=+)) 26...Nb4 (26...Kf7 27.Ra6–+) 27.Qb4 Na5 (27...a5 28.Qa4 Ke7 29.Nf3–+) 28.Rd6 (28.Qb5 Kf8 29.Rd7=+) 28...Qe7 (better 28...Qc4!? 29.Rb6 Qb4 30.Rb4 Nc6–/+) 29.Qb5 Kf8 30.Rad1 Nb7?? (better 30...e4=) 31.Rd7+– Qc5? (better 31...Nc5 32.Re7 Ke7+–) 32.Qa6 (better 32.Qa4 Re8 33.Rb7+–) 32...Na5+= 33.Rd8 (better 33.Ra7 Rb8 34.Qe2+–) 33...Rd8?? (better 33...Kg7 34.R8d7 Kh6=+) 34.Rd8+– Kg7 (34...Kf7 35.Qa7 Qe7 36.Rh8 Qa7 37.Rh7 Ke6 38.Ra7 Nc4+–) 35.Qa7 Kh6 (35...Nb7 36.Qb7 Kh6 37.Rh8 Qd4 38.h4 Qh4 39.Rh7 Kg5 40.Nf3 Kf5 41.Qd7 Ke4 42.Rh4) 36.Rh8 Qb4 (36...Qc6 37.Qh7 Kg5 38.g4 Qh1 39.Kh1 Kg4 40.Qg6) 37.Qh7 Kg5 38.Nf3 Kf5 39.Qh3 (39.Qd7 Ke4 40.Rh4) 39...Ke4+– 40.Rh4 (40.Rh4 Kd5 41.Rb4+–) 1–0. KLINGON09 (1750) – mk2802 (1710), lichess.org, 2019.

4.c4 d5 5.e3 d4 6.ed4 ed4 7.Qe2 Be7 8.d3 (8.c5 Qd5=) 8...c6 9.a4 cb5 (better 9...Kf7!?=) 10.ab5+= Nd7 (10...Nh6 11.Qe4+–) 11.Bd4+– Nh6 12.Ra7?? (better 12.Qd2 Nf5 13.Be3= (worse 13.Ba7 Bc5=+; 13.Ra7 Bb4 14.Qb4 Nd4+=)) 12...Ra7–+ 13.Ba7 Qa5 14.Nd2 Qa7 15.f3 (better 15.Ngf3–+) 15...0–0?? (15...Kf7 16.Nh3–+) 16.g4?? (better 16.Qe7 Ne5 17.g4+=) 16...Re8–+ 17.Ne4 (17.Bh3–+) 17...f5 (17...Bb4 18.Nd2 Re2 19.Be2–+) 18.gf5 (18.Qd2 fe4 19.de4 Bh4 20.Kd1 Nc5–+) 18...gf5 (better 18...Bb4 19.Nd2 Re2 20.Be2 Qa1 21.Bd1 Qc1–+) 19.Qg2 Kh8 20.Ng3 (20.Qb2 Bf6 21.Qc1–+) 20...Bc5 (20...Bb4 21.Kd1 Re1 22.Kc2 Qa2) 21.Kd1 (21.Ne4 fe4 22.Qb2 Bd4 23.Qd4 Qd4 24.de4 Qc3 25.Kf2 Ng4 26.Kg2 Ne3 27.Kf2 Nc2 28.Ne2 Qe3 29.Kg2 Rg8 30.Ng3 Ne1 31.Kh3 Qh6 32.Nh5 Qh5) 21...Qa1 22.Kc2 Qa2 (22...Qa4 23.Kd2 Bb4 24.Kc1 Re1 25.Kb2 Qa3 26.Kc2 Qc3) 23.Kc3 Qa3 (23...Bd4 24.Kb4 Qb1 25.Qb2 Qb2 26.Ka4 Nb6 27.Ka5 Qc3) 24.Kd2 (24.Kc2 Qa4 25.Kd2 Bb4 26.Kc1 Re1 27.Kb2 Qa3 28.Kc2 Qc3) 24...f4 (24...Bb4 25.Kc2 Qa2 26.Kd1 Qb1) 25.Ne4 Be3 (25...Qb2 26.Kd1 Qb1 27.Kd2 Bb4 28.Nc3 Nc5 29.Qg7 Kg7 30.Nge2 Nb3) 26.Kd1 (26.Kc2 Qa2 27.Kc3 Bd4 28.Kd4 Qa1 29.Qb2 Qb2 30.Nc3 Nf5 31.Kd5 Re5) 26...Qc1 27.Ke2 Qc2 (27...Nf5 28.Qg8 Rg8 29.d4 Nd4 30.Kd3 Ne5) 28.Ke1 Qb3 (28...Qb1 29.Ke2 Nf5 30.Qg7 Kg7 31.Bh3 Nd4) 29.Be2 Re4! 30.fe4 (30.de4 Qc3 Mate attack; 30.fe4 Qc3 Mate attack) 30...Qc3 31.Kf1 Qc1 32.Bd1 Qd1 0–1. afsharian (1670) – cremidro, lichess.org, 2019.

4.e3 a6 5.c4 ab5 6.cb5 c6 7.a4 (7.d4 ed4 8.Bd4 d5=) 7...cb5 (7...d5 8.d4=) 8.ab5 (8.Bb5 Nc6+=) 8...Ra1= 9.Ba1 Qa5 (9...d5!?=) 10.Bc3+= Qd8 11.Nf3 (better 11.d4+–) 11...h5? (11...d6 12.Be2+=) 12.Be2 (12.Ne5 Ne7+–) 12...g5? (12...Rh6 13.0–0+=) 13.0–0 (13.Ne5 g4 14.Qc2 Rh6+–) 13...b6? (13...d6+–) 14.h3?? (better 14.Ne5 g4 15.Ng6+–) 14...d5 (better 14...d6!?+=) 15.Ne5!+– fe5 16.Be5 (16.Bh5?! Ke7 17.Be5 Nf6+=) 16...Rh6 17.Bh5 Kd7? (17...Ke7 18.Bb8 Nf6+–) 18.Bb8 Rh5 (18...Nf6 19.Bf3 Ke8+–) 19.Qh5 Nf6 (19...Bb7 20.Be5 Qe7 21.d4+–) 20.Qf3 (20.Qg5 Bb7+–) 20...Ne4 (20...Ke8 21.Bc7! Qc7 22.Qf6+–) 21.Qf7 Be7 (21...Qe7 22.Qd5 Ke8 23.Qc6 Bd7 24.Qg6 Kd8 25.Qb6 Ke8 26.Qg6 Kd8 27.b6+–) 22.Qd5 Nd6 23.Bd6 Bd6 24.Nc3 (better 24.Rc1!? Qf6 25.Qc6 Ke7 26.Qc8 Qe5+–) 24...Kc7 (24...Ke8 25.Ra1 Qc7 26.Qg8 Bf8 27.Ne4+–) 25.Qc6 (better 25.Ra1!? Bb7 26.Ra7 Qc8+–) 25...Kb8 26.Nd5 g4 (26...Bc5 27.Nf6 Bb4 28.d4+–) 27.hg4 (better 27.Nb6 Bh2 28.Kh2 Qc7 29.Qc7 Kc7 30.Nc8 Kc8 31.Rc1 Kb7 32.hg4+–) 27...Bg4 (27...Bc5 28.Nf6 Bb4 29.d4+–) 28.Qb6 (28.Ra1 Ba3 29.Ra3 Qd5 30.Ra8) 28...Kc8 (28...Qb6 29.Nb6 Be2 30.Rb1+–) 29.Qd8 (29.Qc6 Qc7 30.Nc7 Bh2 31.Kh2 Bd7 32.Qc5 Bg4 33.Nd5 Kd8 34.Qe7 Kc8 35.Qc7) 29...Kd8 30.Rc1 Be2 (30...Bc8 31.f4+–) 31.b6 Ba6 32.d4 Bb7 33.Nc7 Ba3 (33...Kd7 34.d5+–) 34.Rc3 Bb4 35.Rc4 (35.Ne6 Kd7 36.Rc7 Ke6 37.Rb7 Kd6+–) 35...Bd6 36.f4 Ba3 (36...Ke7 37.d5+–) 37.g4 (better 37.Nb5 Bf8 38.Rc7+–) 37...Ba6 (37...Bd6+–) 38.Na6 Kd7 39.b7 Bd6 40.b8Q Ke6 41.Rc6 Kd5 (41...Ke7 42.Qb7 Ke6 43.Nb4 Kf6 44.Rd6) 42.Qd6 Ke4 43.Qe5 (43.Kf2 Kd3 44.Qg6 Kd2 45.Qc2) 43...Kf3 44.Rc2 Kg3 45.g5 (45.f5 Kg4 46.Rg2 Kh5 47.Qh8) 45...Kh4 (45...Kg4 46.f5 Kh5 47.Rg2 Kh4 48.Qh8) 46.g6 (46.Rg2 Kh5 47.g6 Kh6 48.Qh8) 46...Kg4 (46...Kg3 47.f5 Kh4 48.Qf4 Kh5 49.Rh2) 47.g7 (47.Kg2 Kh4 48.Qg5) 47...Kf3 48.g8Q (48.Rf2 Kg4 49.g8Q Kh4 50.Rh2) ½–½. Abdullaevich (1855) – aikidable, lichess.org, 2020.

4.e3 Ne7 5.c4 Nf5 6.Nc3 c6 7.a4 a6 8.Be2 Bd6 (8...d5 9.cd5 cd5 10.d4=) 9.Ne4 (9.Nf3 Bb4+=) 9...Bb4 10.c5 (10.Nf3 d6+=) 10...d5= 11.Nd6? (better 11.Bc3!?=) 11...Nd6–/+ 12.cd6 Qd6 13.Nf3 Nd7 14.0–0 e4 15.Nd4 Ne5 16.f4 Nc4 17.Bc4 dc4 18.Qc2 c5 19.Qe4 Kd8?? (better 19...Qe7 20.Qe7 Ke7–/+) 20.Nc2+– Re8 21.Qf3 (21.Qc4 ab5 22.ab5 Ra1 23.Ra1 (23.Na1?! Bf5+=; 23.Ba1?! Be6 24.Qe2 Bf5 25.Nb4 cb4+–) 23...Bd2 24.Rd1+–) 21...Qe6 (worse 21...Bd2 22.Rad1 Re6 23.Rf2+–) 22.Nb4 cb4 23.Rad1 (23.Bd4 b3+=) 23...Rb8 (23...ab5!? 24.ab5 Ra5=+) 24.Bd4 b6 25.f5 gf5 (25...Qf5; 25...gf5 26.Qg3 Combination) 26.Qh5 (26.Qf4 Rb7+=) 26...Bb7 (26...ab5 27.ab5 Rb7 28.Rb1+=) 27.Qh7 (better 27.Rf5 Rg8 28.Bf6 Kc8 29.Rg5 Rg5 30.Qg5+–) 27...Rc8?? (better 27...ab5!? 28.ab5 Be4+=) 28.Rf5 (better 28.Qb7 Re7 29.Bb6 Ke8 30.Qa6+–) 28...Rc7 29.Bf6 Kc8 30.Qh3 1–0. GuestSLTM – GuestGMTQ, freechess.org, 2017.

4.e4 c5 5.Bc4+= b6?? (better 5...a6+=) 6.Bd5+– a6 (6...Nc6 7.bc6 Rb8 8.Nf3+–) 7.Ba8 ab5 8.Nc3 Bh6 (8...b4 9.Nd5+–) 9.Nb5 Ne7 (9...d6 10.Nf3+–) 10.Nd6 Kf8 11.Qf3 Bg5 (11...Kg7 12.Nc8 Nc8 13.Ne2+–) 12.Qb3 (better 12.Nc8 Nc8 13.Be5 Nc6+–) 12...Bf4 (12...Kg7+–) 13.Qf7 1–0. Taulien,Hans_Juergen – Rauschenberger,Sabrina, remoteschach.de, 2002.

4.e4 d5!? 5.ed5 Qd5=.

4.e4 d6 5.d4 c6 (5...Be6 6.Nf3+=) 6.Nf3 Qa5 (6...Bg7 7.Nc3+–) 7.Qd2 b6 (better 7...Qc7+–) 8.Qa5+– ba5 9.de5 de5 (9...fe5 10.Ne5! Bg7 11.Nc4 Bb2 12.Nb2+–) 10.Ne5! Bb4 (10...fe5 11.Be5) 11.Nd2 Nh6 (11...Ne7 12.Nef3 Nd7 13.a3 Bd2 14.Nd2+–) 12.Nc6 0–0 (12...Nc6 13.bc6 Ng4+–) 13.Nb4 ab4 14.Bc4 Kg7 (14...Rf7 15.a3 b3 16.Bf6 bc2 17.Rc1+–) 15.Bd5 Rf7 (15...Nc6 16.a3 a5 17.Bc6+–) 16.Ba8 Rd7 (16...Bb7 17.Bb7 Rb7 18.a4+–) 17.a3 a6 (17...Bb7 18.Bb7 Rb7 19.ab4 Rb5 20.Ra7 Nf7 21.Bc3+–) 18.b6 Ng4 (18...Bb7 19.Bb7 Rb7 20.Nc4+–) 19.ab4 h5 (19...Bb7 20.Bb7 Rb7 21.Nc4+–) 20.Bd5 g5 (20...Bb7 21.c4 Ne5 22.Be5 fe5 23.Nb3+–) 21.b5 h4 22.Be6 Ne5 23.Be5 fe5 24.ba6 Rd8 25.Bc8 Rc8 26.b7 Rc2 27.a7 Na6 28.Ra6 Rc1 29.Ke2 g4 (29...Rc3 30.b8Q Rf3 31.Nf3 g4 32.Qc7 Kf8 33.a8Q) 30.Rc1 g3 (30...Kg8 31.b8Q Kf7 32.Rc7) 31.Rc7 Kg8 32.b8Q 1–0. marekt – wat, ChessWorld.net, 2004.

3.b5 Bg7

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 e5 8.c4 Ne7 9.Nf3 d5 10.Be2 dc4 (10...Bg4 11.Nc3=) 11.Bc4 e4? (11...Nf5 12.d4 Nd6 13.de5 Nc4 14.ef6+=) 12.Nd4 (12.Ng5 Nd5 13.Qb3 Qe7 14.Bd5 fg5 15.Bg7 Qg7+–) 12...f5? (12...Nf5 13.d3 ed3 14.0–0+=) 13.0–0 (better 13.Nc6 Nbc6 14.Bg7+–) 13...Nd7?? (13...Qd6 14.d3 Be5 15.b6+=) 14.Na3 (better 14.Ne6 Ba1 15.Nd8 Kd8 16.d3+–) 14...Ne5= 15.Ne6 (15.Qc2 Nc4 16.Nc4 0–0=) 15...Be6=+ 16.Be6 Qd6 17.Qb3 Rf8 (17...Ng4 18.g3 Ba1 19.Ra1 Qd2 20.Ra2+=) 18.Bc3 (18.d4 Ng4 19.g3 c6+=) 18...Rf6 (18...Ng4 19.g3 Ne5 20.Rd1=) 19.Bg8 (19.Nc4 Nf3 20.gf3 Qe6+–) 19...Ng8 (19...Ng4 20.g3 Rf8 21.Bc4 (21.Bh7? Bc3 22.Qc3 Nf6–+) 21...Bc3 22.dc3+=) 20.Qg8+= Rf8?? (20...Bf8 21.Nc2 Qe6+–) 21.Qg7+– Qf6 (21...Nd3+–) 22.Qf6 (22.Qc7 Qe7 23.Qe5 Qe5 24.Be5 Ke7+–) 22...Rf6 23.Be5 (23.Be5 Rf7 24.f3 ef3 25.gf3+–) 1–0. RichardSommer (2150) – fotoh (2105), lichess.org, 2020.

4.a4 b6 5.c4 Bb7 6.e3 d6 (6...a6 7.d4=) 7.Nf3 e5 8.Be2 Nd7 9.0–0 Ne7 10.Nc3 Nc5 (10...a6 11.d4+=) 11.d4+– ed4 12.Nd4 (better 12.ed4 Nd7 13.Re1+–) 12...Nd7? (12...a6 13.Bf3 Bf3 14.Qf3+– (14.gf3?! f5=)) 13.Bf3 (better 13.Ne6 Qb8 14.Ng7 Kf7 15.Nh5 gh5 16.Bh5 Ng6 17.Nd5+–) 13...Kf7?? (better 13...Bf3 14.Qf3 Ne5+–) 14.Bb7+– Rb8 15.Bd5 Nd5 16.Nd5 (better 16.Nc6!? Qe8 17.Nd5 Rb7+–) 16...Ne5 17.Qc2 Re8 (17...Qd7 18.f4 Ng4 19.h3+–) 18.f4 Nd7 19.Nc6 White prepares a5 19...Qc8 20.Nb8 Qb8 21.a5 (21.f5 g5+–) 21...Nc5 (21...f5 22.Bg7 Kg7 23.Qc3 Kg8 24.Rfd1+–) 22.ab6 ab6 23.Ra2 Qb7 (23...Nd7 24.Rfa1+–) 24.Rfa1 Qc8 25.Nc7 (better 25.Ra7 Nb7 26.Qd2+–) 25...Kg8 (25...Qc7 26.Ra7 Nb7+–) 26.Ne8 Qe8 27.Ra8 Kf7 28.R1a7 Kf8 29.Re8 (29.Qd2 Nd3 30.Qd3 Qa8 31.Qd6 Kg8 32.Ra8 Kf7 33.Qd7) 29...Ke8 30.Rg7 (30.Qd2 d5 31.Qd5 Nb7 32.Qb7 f5 33.Qe7) 30...Nd7 (30...d5 31.Rh7 Kf8 32.Qg6 dc4 33.Qf7) 31.Rh7 (31.Qe4 Kd8 32.Qb7 d5 33.Qd7) 31...Ne5 (31...Nf8 32.Qe4 Ne6 33.Qe6 Kd8 34.Bf6) 32.fe5 g5 (32...Kf8 33.Qg6 de5 34.Ba3) 33.Qg6 Kd8 34.Qg8 1–0. RichardSommer (2105) – mohamedmohamed23 (2105), lichess.org, 2020.

4.a4 c6 5.c4 b6 6.e3 a6 7.Qb3 (7.Nf3 ab5 8.ab5 Ra1 9.Ba1 cb5 10.cb5 e5+=) 7...ab5 (7...e5 8.Nc3=) 8.cb5 c5 9.Bc4 (9.d4 cd4 10.ed4 e6=) 9...e6= 10.Nf3 Ne7 11.Nc3 Bb7 12.Ne2?? (better 12.Be2=) 12...d5–+ 13.Bd3 c4 14.Bc4 dc4 15.Qc4 Bd5 16.Qf4 (16.Qc2 Bf3 17.gf3 Nd7–+) 16...g5 (better 16...e5 17.Qg3 Nd7–+) 17.Ng5? (better 17.Qb4 Bf3 18.gf3–+) 17...fg5 18.Bg7 (18.Qb4 Bb2 19.Qb2–+) 18...gf4 19.Bh8 Kd7 (19...Ng6!? 20.Bg7 Bg2 21.Rg1–+) 20.Be5 (20.Bf6 Bg2 21.Rg1 f3–+) 20...fe3 (20...Bg2!? 21.Rg1 f3 22.Nc3–+) 21.de3 Bg2 (better 21...Ke8!? 22.0–0–+) 22.Rg1 (22.Rd1 Bd5 23.e4 Ke8 24.ed5 ed5–+) 22...Bf3 (better 22...Bd5 23.Rg7 Qf8 24.Rc1–+) 23.Rd1 Nd5?? (better 23...Bd5 24.e4 Qf8–+) 24.Rg3?? (better 24.Rg7!? Qe7! 25.Rd4 Qg7 26.Bg7–/+) 24...Be2 (24...Qf8 25.Rd4 Be2 26.Rg7 Ke8 27.Rh7–+) 25.Ke2?? (25.Rg7 Ke8 26.Rg8 Ke7 27.Rd8 Bd1–+ (27...Kd8?! 28.Ke2 Nd7 29.Rg1–/+)) 25...Ra4 (25...Qh4 26.Ke1 Qa4 27.Rg7 Ke8 28.Rg8 Kf7 29.Rg7 Kf8 30.Rh7 Qb4 31.Kf1 Qc4 32.Ke1 Ra2–+) 26.Rg7= Kc8?? (better 26...Qe7! 27.Rdg1 Ra2 28.Kf1 Nc6 29.bc6 Kc6 30.Re7 Ne7+=) 27.Rc1+– Nc7 28.Rcc7 Qc7 29.Rc7 (29.Bc7?! Ra2 30.Kd3 Nd7+–) 29...Kd8 30.Rh7 Nd7 31.Bd6 Nf6 (31...Kc8 32.Re7+–) 32.Rh6 (better 32.Be7 Kc8 33.Bf6+–) 32...Ne4 33.Re6 (better 33.Be5+–) 33...Nd6?? (better 33...Kd7 34.Re4! Re4+–) 34.Rd6+– Kc7 35.Rd2 (35.Rc6 Kb7 36.Rh6 Kc7+–) 35...Rb4 36.Rd5 Rb5 (36...Rh4+–) 37.Rb5 Kc6 38.Rb2 b5 39.Rb5! Kb5 (39...Kd7 40.f4 Kc6 41.f5+–) 40.h4 Kc6 41.h5 Kc5 42.h6 Kd5 43.h7 Kd6 44.h8Q Kd5 45.Qd4 Kc6 46.f4 Kb5 47.f5 Kc6 48.f6 Kb5 49.f7 Ka6 (49...Kc6 50.f8Q Kb7 51.Qdd6 Ka7 52.Qfb8) 50.f8Q Kb7 51.Qd7 (51.Qfd8 Kc6 52.Q8d7) 51...Kb6 52.Qff5 Ka6 53.Qde6 (53.Qfb5) 53...Kb7 54.Qff7 Kb8 55.Qee8 1–0. afsharian – MAXSI, lichess.org, 2018.

4.a4 d6 5.c4 e5 6.Nc3 Nd7 7.e3 Ne7 8.Nf3 0–0 9.Be2 a6 10.d4 ab5 11.ab5 White launches an attack. 11...Ra1 12.Qa1 ed4 13.Nd4 c6?? (better 13...Nc5+=) 14.Ne6+– Qb6 (14...Qe8 15.Nf8 Qf8 16.0–0+–) 15.Nf8 Nf8 (15...Bf8 16.Ne4+–) 16.0–0 (16.Ne4 Nd7 17.0–0 cb5 18.Nf6 Nf6 19.Bf6 Bf6 20.Qf6 Qc7+–) 16...Be6 (16...cb5 17.cb5 f5 18.Na4 Bb2 19.Nb6 (19.Nb2?! Be6+–) 19...Ba1 20.Ra1+–) 17.Rd1 (17.Ne4 Nf5+–) 17...h5 (17...Nf5 18.Ne4 cb5 19.g4+–) 18.Rd6 (18.Ne4 Nf5+–) 18...Nf5 19.Rd1 h4 20.Na4 Qc7 21.b6 (21.e4!? Nh6 22.Bf6 cb5 23.cb5 Bb3+–) 21...Qe7 22.Ba3 Qf7 23.Nc5 Bc4 24.Bc4 Qc4 25.Qc1 Qg4 (25...Qf7 26.Rd8+–) 26.h3 (26.Nb7?! h3 27.g3 Qf3 28.Qc4 Ne6+–) 26...Qg5 (26...Qe2 27.Nb7 Qa6 28.Nd6 Qb6 29.Qc4 Kh8 30.Nf5 gf5 31.Bf8+–) 27.Qc4 (worse 27.Nb7 Ne3 28.fe3 Qb5+–) 27...Kh7 (27...Kh8 28.Rd3 Nh6+–) 28.Ne4 Qh6 (28...Qh5 29.Rd8 c5 30.Bc5 Ne3 31.fe3+–) 29.Bf8 (29.Qf7 g5 30.Bf8 Qg6 31.Qb7 Kh6 32.Bg7 Ng7 33.Qc6 g4 34.hg4 Qg4 35.Qf6 Qg6 36.Qh4 Nh5 37.b7 Qf5 38.b8Q Qf6 39.Nf6 Kg6 40.Qh5 Kf6 41.Qbe5) 29...Bf8 30.Qf7 (better 30.Rd7 Be7 31.Nd6 Qf8 32.Nf5 gf5+–) 30...Qg7 31.Nf6 Kh6 32.Ng4 (32.Qe6 Bc5 33.Rd7 Ne7+–) 32...Kg5 (32...Kh7 33.Rd7 Ne7 34.Qg7 Kg7 35.Rb7+–) 33.f4 (33.Rd7 Qf7 34.f4 Kh5 35.Rf7+–) 33...Kh5 34.Rd7 Qf7 35.Rf7 Bc5 (35...g5 36.Rf5 Be7+–) 36.Rh7 (36.Rh7 Nh6 37.Rh6) 1–0. BeepBeepImAJeep (2620) – Lucuix21 (2315), lichess.org, 2016.

4.a4 e5 5.c4 Ne7 6.e3 0–0 7.Nf3 c6 8.Be2 d5 9.0–0 d4 (9...Be6!?=) 10.ed4+– ed4 (better 10...e4 11.Ne1 f5+–) 11.Nd4?? (11.Bd4 Bg4 12.Bc3 Re8+–) 11...Nf5?? (better 11...f5 12.Nc6 bc6 13.Bg7 Kg7=+) 12.Nf5+– Bf5 13.d4 cb5 (13...Re8 14.Re1+–) 14.ab5+– Qc7 15.Nc3 Nd7 16.Nd5 Qd8 17.Bf3 Nb6 (17...Re8 18.Re1 Be6 19.c5+–) 18.Nb6 Qb6 19.Qb3 (better 19.Bd5 Kh8 20.Ba3+–) 19...Rab8?? (19...Be6+–) 20.c5 Qe6 (20...Be6 21.Bd5 Qc7 22.Be6 Kh8 23.Ra7 Rfe8+–) 21.Qe6 (better 21.Bd5 Qd5 22.Qd5 Kh8 23.Ra7+–) 21...Be6 22.Ra7 b6 (22...Bc4 23.Rc1 Bb5 24.Bb7+–) 23.c6 (better 23.d5 Bf5 24.c6 Bd3+–) 23...f5 (23...Bc4+–) 24.Rg7! Kg7 25.d5 Theme: Double Attack 25...Kf7 (25...Kh6 26.de6 Rfe8 27.Re1+–) 26.de6 Ke6 (26...Ke7 27.Ba3 Ke6 28.c7+–) 27.Rd1 (27.Re1!? Kd6 28.Ba3 Kc7 29.Re7 Kc8+–) 27...Rfd8 (27...Rbd8 28.Bd4 Rfe8 29.Kf1+–) 28.Rd8 (better 28.Re1 Kf7 29.c7+–) 28...Rd8 29.g3 (29.Bc1 Rd4 30.Be3 Rb4+–) 29...Rd2 (29...Kd6+–) 30.Bc3 (30.Bc1 Rc2 31.Be3 Rb2+–) 30...Rc2?? (30...Rd3 31.c7 Kd7 32.Bc6 Kc7 33.Be5 Kc8+–) 31.Bd4 Rc4 (31...g5 32.h3+–) 32.Bb6 Kd6 (32...g5 33.Be3 g4 34.Be2+–) 33.c7 (better 33.Be3 h6+–) 33...Rc7 34.Bc7 Kc7 35.Bc6 Kb6 36.Kg2 h6 (36...Kc5 37.Kf3+–) 37.Kf3 g5 38.Ke3 (38.h4 Kc5+–) 38...Kc5 39.Be8 h5 (39...Kd5 40.b6 Kd6 41.h4 f4 42.Kf3 fg3 43.Kg3+–) 40.f4 gf4 41.Kf4 Kd6 (41...Kb6+–) 42.Kf5 Ke7 43.Kg5 (better 43.Bh5 Kd6 44.g4 Kc5+–) 43...Ke8 44.Kh4 (44.Kh4 Kd7 45.Kh5+–) 1–0. RichardSommer (1715) – DrStrangeLove321 (1720), lichess.org, 2020.

4.a4 e6 5.c4 Ne7 6.Nc3 0–0 7.d4 b6 8.e4 Bb7 9.f3 (9.a5 ba5 10.Nf3 f5=) 9...c6 (9...f5 10.a5=) 10.Nh3 cb5 11.ab5 d5 (11...f5 12.e5+=) 12.cd5 ed5 13.Bd3 de4 14.Be4 (worse 14.Ne4 f5 15.Bc4 Bd5=+) 14...Be4 15.Ne4 (better 15.fe4!? Rf7 16.0–0+–) 15...f5= 16.Neg5 a6? (better 16...Nd5 17.0–0 Qd7=) 17.Ne6+– Qd7 18.Nf8 (worse 18.Ng7 Nd5 19.Nf5 Rf5 20.ba6 Ra6 21.Ra6 Na6+–) 18...Kf8 (18...Qb5 19.Ng6! hg6 20.Qd2+–) 19.0–0 (19.Qd3!?+–) 19...Qb5+– 20.Ba3 (20.Qd2!?+–) 20...Nbc6= 21.Rb1 Qa5 (21...Qd5 22.Kh1 Qd4 23.Qc2+–) 22.Be7+– Ne7 23.Ng5 (23.Nf4+–) 23...f4 (better 23...Qd5!? 24.Qe2 Qd4 25.Rf2 Ke8+–) 24.Ne6+– (24.Nh7 Kg8 25.Qe1 Qe1 26.Rfe1 Bd4 27.Kf1 Nf5=+ (worse 27...Kh7 28.Re7 Kh6 29.Re4+=)) 24...Kf7 25.Ng7 (25.Re1!? Nd5 26.Qb3 Qb5+–) 25...Kg7+– 26.d5 (better 26.Qe2!? Ra7 27.Rfd1+–) 26...Nd5 (26...Qc5 27.Kh1 Nd5 28.Rc1+–) 27.Qd4+= Kh6 28.Rfd1 (better 28.Rfc1=) 28...Qc5?? (better 28...Nc3 29.Re1 Nb1 30.Qf4 Qg5–/+) 29.Qc5+– bc5 30.Rd5 a5 (30...Rc8 31.Rc1 c4 32.Rc3+–) 31.Rc5 a4 32.Ra1 a3 (32...g5 33.Rc4+–) 33.Rc4 (better 33.Rc3 a2+–) 33...a2 (33...g5 34.Rc3+–) 34.Rf4 g5 35.Rb4 Ra3 (35...Kg6 36.Rb2+–) 36.Rb2 g4 (36...Kg7 37.Kf2+–) 37.fg4 Kg5 38.h3 h5 (38...Kf4 39.Rba2 Rd3 40.Rf1 Ke5 41.Rf5 Ke4 42.Ra4 Rd4 43.Rd4 Kd4 44.Rh5+–) 39.gh5 Kh5 40.Rba2 Kh4 (40...Rb3+–) 41.Ra3 Kg5 42.Ra4 (42.Ra4 Kf5 43.g4 Ke6 44.Ra6 Kd5 45.g5 Kc4 46.g6 Kc3 47.g7 Kd3 48.g8Q Kd4 49.Qg4 Ke3 50.R6a3 Kd2 51.Qd1; 42.Rf1 Kh6 43.Ra6 Kg7 44.Rc1 Kg8 45.Rc7 Kf8 46.Ra8) 1–0. AleksandrNekhoroshik (1605) – kvantd, lichess.org, 2020.

4.a4 e6 5.c4 Ne7 6.Nc3 0–0 7.e3 d5 (7...a6 8.Nf3=) 8.Nf3 c5 9.cd5 ed5 10.d4 c4 11.Be2 a5 (11...Be6 12.0–0=) 12.0–0+– Nd7 13.Nd2 f5 (13...Nb6 14.Rc1=) 14.Bf3 (14.Ba3 Nb6+=) 14...Nf6 15.Qc2 (15.Rc1 Be6+=) 15...Be6 16.Be2 Rc8 17.f4 (17.Rac1 Qd6=) 17...Ne4 (17...Ng4 18.Rf3=+) 18.Nf3 Re8 (18...Rc7 19.Ne5=) 19.Ne4 (19.Ne5 Qd6=) 19...fe4 (19...de4 20.Ng5 Bd5 21.Nh3=+) 20.Ne5 Nf5 21.Bc1 (21.Qc3 Qh4=) 21...Bf8 (21...Qb6 22.Qc3=+) 22.Bd2= Nd6 (22...Bb4 23.g4 Nh6 24.Rab1=+) 23.g4 (23.Bc3 b6=) 23...Be7 (23...b6 24.Rac1=+) 24.Kh1 Rf8 25.Rg1 b6 (25...Kh8 26.Bc3–/+) 26.Raf1 Kh8 27.Qd1 Nf7 28.Qe1 (28.Nc6 Qd6=+) 28...Ne5 (28...Bh4 29.Qc1–/+) 29.de5 Bb4 (29...Rf7!?=+) 30.Bb4= ab4 31.Qb4 Qc7 (31...d4!? 32.f5 d3 33.fe6 de2 34.Rf8 Qf8 35.Qf8 Rf8+=) 32.Qc3+= Qc5 (32...h6 33.f5 gf5 34.gf5+–) 33.f5 gf5 (33...Rf5 34.Bf3) 34.gf5 Bf5?? (better 34...Rf5 35.Rf5 Bf5 36.e6 d4 37.ed4 Qd5+–) 35.e6+– d4 36.ed4 Qd5 (36...Qe7 37.Bg4 Bg4 38.d5 Qg7 39.Qg7 Kg7 40.Rg4 Kh6 41.Rf8 Rf8+–) 37.Rg5 (37.e7 e3 38.Rg2 Rf6 39.Bc4 Qe4+–) 37...h6? (better 37...e3 38.Kg1 Rg8+–) 38.Rh5+– Kh7 (38...Qe6 39.d5 Qf6 40.Rh6 Kg7 41.Rf6 Rf6 42.Rf5 Rh8 43.Qf6 Kh7 44.Qf7 Kh6 45.Rh5) 39.Qe3 (better 39.e7 Rf6 40.Qe3+–) 39...Rf6?? (better 39...Qe6 40.Rf4 c3+=) 40.Bg4!! Rcf8 (40...Bg4 Exploits the pin 41.Rf6) 41.Rff5 (41.Bf5 Qf5 42.Rff5 Rg8 43.Rf6 Rg6 44.Rg6 Kg6 45.Qh6) 41...Qe6 42.Rf6 Qf6 43.Bf5 (43.Rf5 Qe7 44.Rf8 Qf8 45.Qe4 Kg7+–) 43...Kg7 44.Qe4 (better 44.Qg3 Kh8 45.Qc7+–) 44...Qf7 (44...Rd8 45.Rh4 Rf8+–) 45.Qg4 Kf6 46.Rh6 (46.Qh4 Kg7 47.Qg3 Qg6 48.Qg6 Kh8 49.Rh6) 46...Ke7 47.Re6 (47.Qe4 Kd8 48.Qa8 Ke7 49.Qb7 Kd8 50.Qc8 Ke7 51.Qd7) 47...Kd8 48.Re5 (48.Qg5 Kc7 49.Re7 Qe7 50.Qe7 Kb8 51.Qf8 Kb7 52.Qc8 Ka7 53.Qc7 Ka8 54.Be4) 48...Qb7 49.Be4 (49.Kg1 Qc6 50.bc6 b5 51.Qg7 Rf7 52.Qf7 ba4 53.c7) 49...Qf7 (49...Rf1 50.Kg2 Qf7 51.Qg5 Rf6+–) 50.Qg5 (better 50.Rd5 Kc7 51.Rf5+–) 50...Qf6 51.Rf5 (51.h4 c3+–) 51...Qg5 52.Rg5 (52.Rf8 Ke7 53.Rf5 Qd2 54.Re5 Kf6 55.Rf5 Kg7–+) 52...Ke7 (52...Rf4 53.Rd5 Ke7 54.Re5 Kd6 55.a5 ba5 56.b6 Rf1 57.Kg2+–) 53.Rd5 (53.Rg7!? Kd8 54.a5 ba5+–) 53...Rf1 (53...Rf2 54.Re5 Kd7 55.Bc6 Kd6 56.Rd5 Ke6 57.a5 ba5 58.b6+–) 54.Kg2 Rd1 (54...Ra1 55.Re5 Kd6 56.Bc2+–) 55.Re5 (55.a5!? Rd2 56.Kg3 ba5+–) 55...Kd6 56.Kf3 (56.Re8 Rd4 57.Rd8 Ke5 58.Rd4 Kd4+–) 56...Rd4 57.Kf4 (better 57.Re8!? Kc5+–) 57...c3 58.Rd5 (better 58.Rh5 Ra4 59.Rh6 Kc5 60.Rc6 Kb5 61.Rc3+–) 58...Rd5–+ 59.Bd5 (59.Kf3–+) 59...c2 60.Ke3 (60.Bc6–+) 60...c1Q 61.Kd4 Qc5 62.Ke4 Qd5 63.Kf4 (63.Kf4 Qe5 64.Kf3 Qh2 65.Ke3–+). BeepBeepImAJeep (2740) – h1ppopotamus (2560), lichess.org, 2020.

4.c4 c5 5.a4 d6 6.e3 Bf5 7.Na3 (7.d4 cd4 8.ed4 e5+=) 7...Nd7 8.d4 (8.Be2 e5=) 8...cd4 (8...Qa5 9.Qd2 Qd2 (worse 9...Qa4 10.Be2 Nb6 11.Bc3+–) 10.Kd2 e5=) 9.Bd4 (9.ed4 Qa5 10.Qd2 Qd2 (10...Qa4? 11.g4+–) 11.Kd2 e5=) 9...Nc5 (9...Qa5!? 10.Qd2 Qd2 (10...Qa4?! 11.Be2 Nc5 12.Bd1+–) 11.Kd2 e5–/+) 10.Bc5 dc5 11.Nf3 (11.Qd8 Rd8 12.a5 Bg4=+) 11...Bg4 (11...Qa5!? 12.Qd2 Qa4–/+) 12.Be2 f5 13.Rb1 (13.Qd8!? Rd8 14.Rd1 Rd1 15.Kd1=) 13...Qa5–/+ 14.Nd2 (14.Kf1 Nf6 15.h3 Bh5–/+) 14...Rd8 15.Bg4?? (15.Rb3 Be2 16.Qe2 Nf6–/+) 15...fg4 (15...Rd2 16.Qd2 Bc3 17.0–0 Bd2 18.Bf3 Qa4 19.Rbd1 Be3 20.Rd3–+) 16.Rb2?? (better 16.Rc1–/+) 16...Bb2–+ 17.Nab1 Bc3 18.Nc3 Qc3 19.h3 (19.Ke2–+) 19...Nf6 20.hg4 Ng4! 21.Rh4 (21.Qg4 Qc1 Double attack (21...Qd2 Deflection; 21...Qd2 Overloading)) 21...Nf2! 22.Qe2 (22.Kf2 Rd2 Double attack (22...Qd2 Deflection; 22...Rd2 Decoy; 22...Qd2 Overloading)) 22...Nd3 23.Qd3 Qd3 (23...Rd3 24.Kf1 Qc1 25.Kf2 Qd2 26.Kg3 Qe3 27.Kh2 Qg3 28.Kg1 Rd1) 24.Rd4 (24.Kf2 Qd2 25.Kg3 Qe3 26.Kh2 Qe5 27.Rf4 Qf4 28.g3 Rd2 29.Kh3 Qf3 30.a5 Qh5) 24...Qe3 25.Kd1 (25.Kf1 Rf8 26.Nf3 Rd4 27.g3 Rd2 28.a5 Rf3) 25...Qd4 (25...Rd4 26.Kc1 Rd2 27.a5 Qe1) 26.Kc2 (26.Ke2 Qd2 27.Kf3 Rd3 28.Kg4 h5 29.Kh4 g5) 26...Qd2 27.Kb3 (27.Kb1 Rf8 28.a5 Rf1) 27...Qb4 (27...Rd3) 28.Kc2 Rf8 (28...Rd2 29.Kc1 Qb2) 29.a5 (29.Kc1 Qd2 30.Kb1 Rf1) 29...Qc4 (29...Rf2 30.Kc1 Qe1) 30.Kb2 Rd3 (30...Rf2 31.Ka3 Rd3) 31.a6 (31.Kb1 Rf1 32.Kb2 Qb3) 31...Rf2 32.Kb1 Rd1 0–1. afsharian – ohaya, lichess.org, 2018.

4.c4 c6 5.a4 cb5 6.ab5 a6 7.e3 a5 8.Bc3 d6 9.Nf3 h6 (9...Bg4!?+=) 10.Bd3+– g5 11.Bg6 Kf8 12.0–0 e5 (12...f5 13.d4+–) 13.d4+– Ne7 14.Be4 (14.Bh5 Qc7 15.Ra4+–) 14...Bd7? (better 14...f5 15.Bc2 g4+–) 15.de5+– fe5 (15...fe5 16.Qd6 Nbc6 17.bc6 Bc6 18.Qd8 Rd8 19.Ba5 Rc8 20.Bc6 Nc6+–). AleksandrNekhoroshik – monzer123, lichess.org, 2021.

4.c4 c6 5.a4 d5 6.e3 Bf5 7.Nf3 e5 8.Be2 Ne7 9.0–0 Nd7 10.Nc3 (10.d4 0–0+=) 10...0–0 (10...dc4 11.Bc4 Nb6 12.Be2+=) 11.h3 (11.d4 Be6+=) 11...Kh8 12.Qb3 (12.d4 Be6=) 12...Nc5 13.Qd1 (13.Qa3 Nd3 14.cd5 cd5 15.Nh4 Nb2 16.Nf5 Nf5 17.Qb2=) 13...Rc8 (better 13...Nd3!? 14.Ba3 dc4 15.bc6 bc6=+) 14.d4+= ed4 (14...Nd7 15.bc6 bc6 16.Ba3+=) 15.Nd4 (worse 15.Qd4 Nb3 16.Qh4 Na1 17.Ra1 dc4 18.Qc4 cb5 19.Qb5 Qc7–/+; 15.ed4?! Ne4 16.Ne4 de4+=) 15...Bd7 16.cd5 cd5 17.Bf3 Be8 (17...f5 18.Nd5 Nd5 19.Bd5+=) 18.Ba3 (18.Rc1 Bf7+–) 18...Bf7 19.Rc1 Re8 (better 19...Ne6+–) 20.Bg4 (better 20.Nd5!? Nd5 21.Rc5+–) 20...f5+= 21.Bf3 Ne4 22.Ne4 (22.Bb4 Rc4 23.Na2 Bd4 24.ed4 Qb6+=) 22...de4= 23.Be2 Rc1 24.Qc1 Nd5 25.Qc5 (25.Rd1 Qg5=) 25...f4 (25...Qb8 26.Bb2=+) 26.Qa7= f3 27.gf3 ef3?? (27...Nc3 28.Bc5 Ne2 29.Ne2 Bc4–/+ (29...ef3?! 30.Ng3=+)) 28.Bf3+– (28.Nf3? Nc3 29.Bd1 Nd1 30.Qb7 Bd5 31.Rd1 Bb7 32.Rd8 Rd8–+) 28...Qg5 29.Kh2?? (better 29.Kh1 Qh4 30.Bg2 (30.Qb7 Qh3 31.Kg1 Be5 32.Rb1 Bh2 33.Kh1 Bg3 34.Kg1 Qh2 35.Kf1 Qf2) 30...Bd4 31.Qd4 (31.ed4?! Nf4 32.Bd6 Nh3=) 31...Qd4 32.ed4+–) 29...Be5?? (29...Ne3 30.Rg1 Be5 31.Rg3 Bg3 32.fg3 Nf1 33.Kh1 Qg3 34.Bd6 Qd6 35.Kg1 Qg3 36.Bg2 Ne3 37.Qb7 Ng4 38.Qe7 Re7 39.Nf3 Re2 40.hg4 Qg2) 30.Kh1 Qh6?? (30...Ne3 31.Rg1 Qh4–+) 31.Bg2+– (31.Qb7?? Qh3 32.Kg1 Qh2) 31...Bd4?? (31...Nf4 32.Bf8 Rf8 (worse 32...Qf8 33.ef4 Bf6 34.f5+–) 33.ef4 Bd5 34.Bd5 Qh3 35.Kg1 Bf4=+) 32.Qd4+– (32.ed4?! Nf4 33.Bd6 Nh3+–) 32...Kg8 (32...Qg7 33.Qg7 (33.Bd5?! Qd4 34.ed4 Bd5 35.Kh2 Ra8+–) 33...Kg7 34.Rd1+–) 33.Bd5 Qh3 34.Kg1 Bd5 35.Qd5 Kg7 (35...Qe6 36.Qb7 Rc8 37.Qf3+–) 36.Qg2 (better 36.Qb7 Kg8 37.Qd5 Kg7 38.Qd4 Kh6 39.Rc1+–) 36...Kh6 (36...Qd7+–) 37.Qh3 Kg7 38.Bb2 Kf8 39.Qd7 (39.Qf3 Ke7 40.Rd1 Rb8 41.Qf6 Ke8 42.Ba3 Rd8 43.Rd8) 39...Re7 (39...Rd8 40.Qg7 Ke8 41.Bf6 Rd2 42.Qe7) 40.Qd8 (40.Ba3 Kf7 41.Qe7 Kg8 42.Qf8) 40...Kf7 41.Qd5 Re6 42.Ba3 (42.Rc1 h6 43.Rc7 Kf8 44.Qe6 g5 45.Bg7) 42…g5 (42...g5 43.Rc1 Kg6 44.Qe6 Kh5 45.Kg2 g4 46.Rc5 Kh4 47.Qf6; 42...Kf6 43.Qf3 Kg5 44.Qg3 Kh6 45.Bf8 Kh5 46.f4 Re3 47.Qg5) 0–1. RichardSommer (2040) – passiwitz (2185), lichess.org, 2020.

4.c4 c6 5.e3 cb5 6.cb5 Nh6 7.a4 Nf7 8.Nf3 0–0 9.Be2 d6 10.0–0 Nd7 11.h3 (11.d4 e5+=) 11...b6 (11...a6 12.d4+=) 12.Nd4 Bb7? (12...Nb8 13.Nc3 e6 14.Qb3+=) 13.Bf3 (13.Ne6 Qc8 14.Nf8 Qf8+–) 13...Qc7? (13...Bf3 14.Qf3 (worse 14.gf3 Qc8=) 14...Qe8 15.Ne6+=) 14.Bb7 (better 14.Ne6 Bf3 15.Qf3+–) 14...Qb7+= 15.Nc6 Rae8 (15...Nb8 16.Qf3 Nc6 17.bc6+= (worse 17.Qc6 Qc6 18.bc6 Rfc8–/+)) 16.f4 (16.d4 e5+–) 16...Nc5 (16...Nb8 17.Nb8 Rb8 18.d3=) 17.Qf3 e5 18.d4 (18.f5 e4 19.Qg3 g5+=) 18...Nd3 19.Bc3 (better 19.Qe2 Nb2 20.Qb2 ef4 21.ef4=) 19...ef4?? (better 19...e4 20.Qe2 f5=) 20.ef4+– Kh8 (20...Nf4 21.Qf4 f5+–) 21.Qd3 d5 (21...Nh6 22.a5+–) 22.Bb4 Rg8 23.Nc3 Nd6 (23...a5 24.Ba3 Nd8 25.Nd5 Nc6 26.bc6 Qc6+–) 24.Bd6 Re4 (24...Re6 25.Bb4 Rc6 26.bc6 Qc6 27.Nb5+–) 25.Ne4 de4 26.Qe4 f5 27.Qd3 (27.Qe6 Qc8 28.Rfe1 a5+–) 27...Qd7 28.Be5 Be5 29.fe5 h6 30.Rfe1 Kh7 31.e6 Qd6 32.d5 (32.Qa3!? Qc7+–) 32...Re8 33.Rad1 g5 34.Ne5 (34.Qf5 Kg7 35.Qf7 Kh8 36.Qe8 Kg7 37.Qf7 Kh8 38.e7 Qc5 39.Kh1 Qe7 40.Re7 a6 41.Qe8) 34...Qc5 35.Kh1 Kg7 36.Qf5 Qg1 37.Kg1 (37.Rg1 Rf8 38.Qg6 Kh8 39.e7 Rf2 40.e8Q Rf8 41.Qf8) 37...Re6 (37...Re7 38.Qg6 Kh8 39.Rf1 Rg7 40.Rf8 Rg8 41.Qg8) 38.de6 h5 (38...Kh8 39.Rd8 Kg7 40.Qf7) 39.Qg6 Kf8 40.Qf7 1–0. RichardSommer (2125) – kukuriku1963 (2045), lichess.org, 2020.

4.c4 d5 5.e3 dc4 (5...e6 6.cd5 ed5 7.Nf3=) 6.Bc4= a6 (6...Nd7 7.d4+=) 7.a4 (7.ba6 b6+=) 7...ab5= 8.ab5 Ra1 9.Ba1 c6 (9...Nh6 10.d4+=) 10.Qb3 cb5?? (better 10...Nh6+=) 11.Bg8+– Kf8 (11...Bf5 12.Nc3 b4+–) 12.Qf7 1–0. BeepBeepImAJeep (2500) – Whal (1730), lichess.org, 2017.

4.c4 e6 5.e3 Ne7 6.Nf3 0–0 7.Be2 c6 8.a4 a6 9.0–0 d5 10.cd5 ed5 11.d4 Bg4 12.Nbd2 Nd7 (12...ab5 13.ab5 Ra1 14.Qa1+=) 13.h3 Bf3 14.Bf3 ab5 15.ab5 cb5 (15...Ra1 16.Qa1 f5 17.Ba3+=) 16.Bc3 (16.Ra8 Qa8 17.Qb3 Nb6+–) 16...Nc6? (better 16...Ra1!? 17.Qa1 Nb6+=) 17.Bd5 Kh8 18.Bf3 (18.Ra8 Qa8 19.Qb3 Nb6+–) 18...Nb6 (18...Qe7 19.Rb1 Ra7 20.Rb5+–) 19.Ne4 (19.Ra8 Na8 20.Qb3 Nc7+–) 19...Nc4 (19...Ra1 20.Qa1 Qe7 21.Rc1+–) 20.Nc5 N6a5? (better 20...Qe7 21.Qb3 Ra1 22.Ra1 Nd6+–) 21.Ne6 (21.Nb7?! Nb7 22.Bb7 Rb8+–) 21...Qe7 22.Nf8 Bf8 23.Ba5 Ra5 24.Ra5 Na5 25.Qb1 b4 26.Qa2 Nc6 27.Bc6 bc6 28.Rc1 Qc7 (28...Qe4 29.Qa8 Kg8 30.Rc6+–) 29.Qb3 (better 29.Qa8 Qe7+–) 29...Qb6 (29...Kg7+–) 30.Qf7 Bg7 (30...Qd8 31.Rc6 Qe7 32.Rf6 Qf7 33.Rf7 Kg8+–) 31.Qe8 (31.Qe8 Bf8 32.Qf8) 1–0. AleksandrNekhoroshik (1700) – sportzoom (1645), lichess.org, 2021.

4.e3 (--> 3.e3 Bg7 4.b5).

4.e4 e5 5.Bc4 c6 6.Nc3 cb5 (6...Ne7!? 7.Qf3 a6 8.bc6 Nbc6+=) 7.Nb5 Qb6 8.Ba3 Nc6? (better 8...Bf8 9.Rb1 Ba3 10.Na3 Qc5+–) 9.Nd6 Kd8 10.Nf7 Kc7 (10...Ke8 11.Nh8 Nh6+–) 11.Bd6 1–0. Anonymous – Anonymous, lichess.org, 2020.

4.Nf3 e5 5.e4 Ne7 6.Bc4 c6 7.a4 (7.bc6!? bc6 8.d4+=) 7...d5= 8.ed5 cd5 (worse 8...Nd5 9.Nc3 Be6 10.Ne4+=) 9.Bb3 Bg4 (9...Nd7 10.Ba3 e4 11.Nd4=) 10.h3= Bf3 11.Qf3 e4 12.Qf4 (12.Qe2 Nd7 13.d4 ed3 14.cd3=) 12...0–0? (better 12...Nd7!? 13.Ba3 Rc8=) 13.Nc3 f5 14.Ba3 Re8 (14...Bc3 15.dc3 Nd7 16.c4+–) 15.Rb1 (better 15.Be7!? Re7 16.Nd5 (16.Bd5?! Kh8 17.0–0–0 Rd7+=) 16...Ba1 17.Ne7 Kg7 18.Nd5+–) 15...Kh8+– 16.Be7 Re7 17.Nd5 Rd7 (17...Re5 18.c4+=) 18.c4 a6 (18...Rf7!?+–) 19.0–0+– ab5 20.ab5 Bd4 (better 20...Rf7+–) 21.Ne3?? (better 21.d3!? Qe8 22.Rfe1 Be5+–) 21...Be3 (better 21...Qe7=) 22.de3+– (22.Qe3?! Rd3 (22...Rd2? 23.Rfd1 Rd3 24.Bc2+–) 23.Qf4 Qe7+– (23...Rd2 24.Qe5 Kg8 25.c5 Rd5 26.Bd5 Qd5 27.Qd5 Kg7 28.Qb7 Kh6 29.Qa8 Nd7 30.c6 Ne5 31.c7 Kh5 32.c8Q Kh4 33.Qab7 h6 34.Qe7 Kh5 35.Qe5 Kh4 36.Qce8 Kh5 37.Qf5 Kh4 38.Qee4)) 22...Qf6 (22...Qc7 23.Ra1 Qf4 24.ef4 Ra1 25.Ra1+–) 23.h4 (23.Rfd1 g5 24.Qg3 Rg7+–) 23...Rd2? (23...Re7+–) 24.g3?? (24.Rfd1 Rd1 25.Rd1+–) 24...Nd7+= 25.Qc7 Ne5 (better 25...Qd8!? 26.Qd8 Rd8+=) 26.Qb7+– Nf3 (26...Rdd8!? 27.Rfd1 Nd3 28.Bc2 Nf2 29.Kf2+–) 27.Kg2 Rad8 (27...Qd8 28.c5 Rd7 29.Qc6+–) 28.c5 Qe5 (28...R8d7 29.Qa6 Kg7 30.Qf6 Kf6+–) 29.c6 Qc5 (29...Qe8+–) 30.c7 Rf8 (30...Qf8+–) 31.Rfc1 (better 31.Rbc1 Qb5 32.c8Q Rdd8 33.Rc7 Ne1 34.Re1 Qb7 35.Qb7 Rf7 36.Rf7 Rd7 37.Rd7 f4 38.Rh7) 31...Qe5?? (31...Qe3 32.Rf1 Nh4 33.Kh3 Rf2 34.Rf2 Qf2 35.Qe4 fe4 36.c8Q Rc8 37.Rf1 Qf1 38.Kh4 Rc5 39.Bd5 Rd5 40.b6 Qe2 41.b7 Rh5) 32.c8Q Rdd8 (32...Qd6 33.Qf8! Qf8 34.Rc7 Nh4 35.gh4 Rd7 36.Rd7 Qg8 37.Bg8 h6 38.Qc8 f4 39.Rh7) 33.Qd8! Rd8 (33...Rd8 34.Rc7 Combination) 34.Rc8 (34.Rc7 Ng5 35.hg5 Qc7 36.Qc7 Rg8 37.Qe5 Rg7 38.Qe8 Rg8 39.Qg8) 34...Rc8 35.Qc8 Kg7 36.Qg8 Kh6 37.Qf8 (37.Qf8 Kh5 38.b6+–) 1–0. mic (2185) – miodrag (2130), net–chess.com, 2009.

4.c4 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 cb5 9.cb5 d5 10.Qb3 e5 11.Nc3 Ne7 12.Nf3 0–0 (12...g5 13.d4=) 13.Be2 (13.e4 Re8+=) 13...Bg4 (13...Be6 14.0–0=) 14.0–0 (better 14.e4+=) 14...e4? (14...Qd6!?=) 15.Nd4 (15.Ne4!? Nd7 16.d4+–) 15...Be2+– 16.Nce2 Qd7 17.Nf4 Bh6 18.Nfe6 Re8 (18...Rc8 19.d3+–) 19.d3 (19.Nc5 Qg4+–) 19...f5 (better 19...ed3!? 20.Qd3 Nc8+–) 20.de4 fe4 21.Rc1 (21.Qc3 Qd6 22.Nc7+–) 21...Bg7?? (21...Rc8 22.Rc3+–) 22.Rc7 (better 22.Ng7 Rc8 23.Rc8 Qc8 24.Qb2+–) 22...Qd6? (better 22...Rc8!? 23.Rc3 Rc3 24.Bc3 Be5+=) 23.Rb7+– (23.Ng7?! Qc7 24.Nc6 bc6 (worse 24...Nbc6 25.Ne8 Nd4 26.Nc7 Nb3 27.Bf6+–; 24...Nec6?? 25.Ne8 Qf7 26.bc6 Nc6 27.Nd6+–) 25.Ne8 Qa5 26.Nf6 Kf7=) 23...Bd4 (23...Rc8 24.Bb2 Bd4 25.Nd4+–) 24.Nd4 Nf5?? (24...Nd7 25.Qc3 Kf7+–) 25.Nf5 gf5 26.Rg7 (better 26.Qc3 Re5 27.Qe5 Qe5 28.Be5+–) 26...Kf8 27.Rh7 Re7 (27...Nd7 28.Qc3 d4 29.Qd4 Qd4 30.Bd4 Re7+–) 28.Rh8 Kf7 29.Rh7 (better 29.Qd1 Ke6 30.Rh6 Kd7 31.Rd6 Kd6 32.Bb2+–) 29...Ke8?? (29...Kf8 30.Bb2 Rh7+–) 30.Re7 (30.Rh5 Nd7+–) 30...Ke7 31.Qc3 Qb6 (31...Nd7+–) 32.Qe5 Qe6 (32...Kd8 33.Qd5 Nd7 34.Bd4+–) 33.Qb8 Qd7 (33...Qd6 34.Qa7 Ke6 35.Qg7+–) 34.Qe5 (34.b6!? Qc6 35.g4 Qc1 36.Kg2 Qd1 37.Qc7 Ke8 38.Qc8 Ke7 39.Bf6 Kf6 40.Qf5 Ke7+–) 34...Kd8 35.b6 Qb5 (35...Kc8+–) 36.Qc7 Ke8 37.g3 (better 37.h4!? Qb1 38.Kh2 Qa1+–) 37...Qb1 38.Kg2 Qd1 39.Bd4 (better 39.Qe5 Kd7 40.Qf5 Kc6 41.Bd4 Qf3 42.Qf3 ef3 43.Kf3+–) 39...Qf3= 40.Kh3 Qg4 41.Kg2 Qf3 42.Kf1 Qd1 43.Kg2 Qf3 ½–½. AleksandrNekhoroshik – arnauvivett, lichess.org, 2021.

5.a4 e5 6.e4 d6 7.Qb3 (7.d4 Ne7=) 7...Nh6 (7...f5 8.ef5 Bf5 9.c5=+) 8.h3 (8.Nf3 f5 9.Nc3 Nd7=) 8...f5=+ 9.d3 f4 (9...Nd7 10.Nf3=+) 10.Nf3= c6 (10...Nd7 11.Be2=) 11.Nc3 (11.Be2 ab5 12.ab5 Ra1 13.Ba1 Nd7+=) 11...c5 (11...Nd7 12.Be2=) 12.Nd5+= White prepares the advance b6 12...ab5 13.cb5 Be6 14.b6 (better 14.Nc7 Qc7 15.Qe6 Kd8 16.Be2+=) 14...Nd7?? (better 14...Bd5 15.Qd5 Qb6=) 15.Nc7+– Qc7 (15...Kf7 16.Qe6 Kf8 17.Na8 Nb6 18.Ne5 Be5 19.Be5 de5 20.Nb6+–) 16.Qe6 (16.bc7? Bb3 17.Bc3 0–0–+) 16...Kd8 17.bc7 Kc7 18.Be2 Rhe8 19.Qb3 Bf6 20.Rb1 g5 (20...Reb8 21.g4 fg3 22.fg3+–) 21.Bc3 b6 22.a5! Rab8 (22...ba5 23.Qb7 Double attack) 23.a6 (better 23.ab6 Kd8 24.b7 Ke7+–) 23...b5 (23...Ra8+–) 24.Ba5 Kc6 25.Qd5 1–0. afsharian – phonix33, lichess.org, 2018.

5.e3 ab5 6.cb5 b6 (6...d5 7.d4=) 7.a4 (7.d4 f5+=) 7...Bb7 8.Nf3 d6 9.Be2 Nd7 10.0–0 e5 11.Nc3 Ne7 12.Qc2 0–0 13.d4 ed4 (13...d5 14.Ba3+=) 14.Nd4 Qc8 (14...Nc5 15.Rfd1+=) 15.Ne4 (15.Bc4 Kh8+–) 15...Nc5 (15...f5 16.Ng5 Nc5 17.Bc4 d5 18.Be2+–) 16.Bf3 (16.Nc5 bc5 17.Nf3 Qe6+–) 16...Ne4+= 17.Be4 Be4 18.Qe4 Re8 19.Qc2 f5 (19...Qd7 20.Rfc1 Ra7 21.Qb3 d5 22.Nc6 Nc6 23.Rc6+– (23.bc6?! Qe6=)) 20.Rac1 Nd5?? (20...Be5 21.Qb3 (21.Qc7?! Qc7 22.Rc7 Ra4=) 21...d5 22.Ba3 Bd4 23.ed4+–) 21.Ne2 (better 21.Qb3 Kf8 22.Qd5 Ra4 23.Rc2+–) 21...Ra7 22.Bg7 Kg7 23.Rfd1 Nf6 24.Rd6 (24.a5!? ba5 25.b6+=) 24...cd6= 25.Qc8 Rc8 26.Rc8 Ra4 27.Rc6 (27.g3 Ne4=) 27...Rb4=+ 28.h3 Rb5 29.Rd6 Ne4 30.Rd7 Kh6 31.f3 Rb1 32.Kh2 Nf2 33.Kg3 Nh1 34.Kf4 Rb4 (34...Rb2 35.g4 g5 36.Kf5 Re2 37.h4 Ng3 38.Kf6 Ne4 39.fe4 Rf2 40.Ke6 gh4 41.Rd5=) 35.e4 fe4 36.fe4 Nf2 37.Rd4 Rb2 (37...Rb3 38.Ke5+=) 38.Nc3 (38.Ke3!? Nh1 39.e5+–) 38...Rb3= 39.Nd5 g5 (better 39...Nd3!? 40.Ke3 Nc5 41.Ke2 Kg5=) 40.Kf5+– Rg3 (better 40...Nh1+–) 41.Ne3?? (better 41.e5 Rg2 42.e6+–) 41...Re3–+ 42.Rd6 Kg7 (42...Kh5 43.e5 b5 44.e6–+) 43.e5 h6 (43...Nd3 44.Rd7 Kh6 45.Rd6 Kh5 46.e6–+) 44.e6? (44.Rg6 Kf7 45.Rb6=+) 44...Ne4–+ 45.Rd7 Kf8 46.Kg6?! (46.Rd8 Ke7 47.Rd7 Ke8 48.Rh7–+) 46...Nc5 47.Rd8 (47.e7 Re7 48.Rd8 Re8–+) 47...Ke7 48.Rb8 Re6 49.Kh5 Nd7 (49...Nd7 50.Ra8 b5–+) 0–1. KLINGON09 (1705) – smidasek (1760), lichess.org, 2019.

4.c4 b6

5.a4 Bb7 6.d4 a6 7.d5 ab5 8.cb5 d6 (8...Nh6!?=) 9.e4 Nd7 10.f3 Nh6 11.g3 (11.Bd3 0–0+=) 11...0–0 12.h4 f5 13.Be2?? (13.Bg7!? Kg7 14.Qd4 Nf6 15.Nd2=) 13...fe4 (13...Bb2 14.Ra2 Be5 15.f4–+) 14.fe4?? (better 14.Bg7 Kg7 15.fe4=+) 14...Bb2–+ 15.Nf3 (15.Ra2 Be5 16.Ra3–+) 15...Ba1 16.Nc3 (16.h5 g5! 17.Ng5–+) 16...Bc3 17.Kf2 Bg7 (better 17...Ng4!? 18.Kg1 Nc5 19.Ng5–+) 18.Kg2 e6! 19.Kh2 (19.de6 Nc5 Double attack (19...Be4 Pinning; 19...Be4 Deflection; 19...Nc5 Decoy)) 19...ed5 20.ed5 Qf6 (better 20...Ng4 21.Kg1 Qe7–+) 21.Bc4 Rfd8 (better 21...Ng4 22.Kg1 Nde5 23.Qe2 Nf3 24.Kg2–+) 22.Rf1 Qe7 (better 22...Ng4 23.Kg1 Ne3 24.Qb3–+) 23.Ng5 Rf8 (23...Nf5 24.Re1 Ne3 25.Qe2–+) 24.Rf8 Rf8 25.Ne6 Nc5 (25...Ne5 26.Be2 Neg4 27.Bg4 Ng4 28.Qg4 Bd5 29.Nf8 Qe1 30.Qe6 Be6 31.Ne6 Qe6 32.Kg2 Qe2 33.Kh3 Qf2 34.h5 Be5 35.a5 Qg3) 26.Nf8 Bf8 (26...Qe4 27.Be2 Bd5 28.Qf1–+) 27.Qf3 Nf5 28.g4 Ne3 29.Bd3 Nd1! 30.Qd1 Nd3 (better 30...Qh4 31.Kg1 Qg3 32.Kf1 Nd3 33.Qe2 Bd5 34.Qd3 Qd3 35.Kf2 Qd2 36.Kf1 Qg2 37.Ke1 Bf3 38.a5 Qe2) 31.Qd3 Bg7 (better 31...Qh4 32.Qh3 Qf2 33.Qg2 Qg2 34.Kg2 Bd5 35.Kf2–+) 32.Qd2 (32.Kh3 Qf7 33.Kg2–+) 32...Qe5 33.Kg1 Bd5 34.a5 Qe4 (34...Qg3 35.Kf1 Bc4 36.Qe2 Qf3 37.Kg1 Bd4 38.Kh2 Qe2 39.Kg3 Be5 40.Kh3 Qf3) 35.ab6 (35.Qd5 Qd5 36.Kf2 Bd4 37.Ke2 Qb5 38.Kd1 Qb2 39.Ke1 Qf2 40.Kd1 Be3 41.ab6 Qd2) 35...Qh1 (35...Bd4 36.Kh2 Qg4 37.Qf2 Be5 38.Qf4 Bf4) 36.Kf2–+ Qg2 37.Ke3 (37.Ke1 Qe4 38.Kf1 Qf3 39.Kg1 Bd4 40.Kh2 Qg4 41.Qf2 Be5 42.Qf4 Bf4) 37...Qd2 (37...Qf3) 38.Kd2–+ cb6 39.Ke3 Bb7 40.Kf4 (40.Kf2 Bc8 41.Kf3 Bd7–+) 40...Be5 41.Kg5 White plans h5 (41.Ke3 Bc8 42.Kf3 d5–+) 41...Kg7 (41...d5 42.h5 d4 43.hg6 hg6 44.Kg6 Be4 45.Kg5 d3 46.Kh4 d2 47.Kg5 d1Q 48.Kh4 Bf4 49.g5 Bf3 50.g6 Qh1) 42.h5 h6 (42...d5 43.Kh4 d4 44.g5 d3 45.Kg4 d2 46.h6 Kf7 47.Kh4 d1Q 48.Kh3 Qh5) 43.Kh4 gh5 44.gh5 Bf4 (44...Be4 45.Kg4 d5 46.Kh4 d4 47.Kg4 d3 48.Kh3 d2 49.Kg4 d1Q 50.Kh4 Qe1 51.Kg4 Qg3) 45.Kg4 Bg5 (45...Be3 46.Kf5 d5 47.Kg4 d4 48.Kh4 d3 49.Kg4 d2 50.Kh4 d1Q 51.Kg3 Qf3 52.Kh4 Bf2) 46.Kf5 d5 47.Ke5 d4! 48.Kd4 Kf6 49.Kc4 Bc1 (49...Bf3 50.Kd4–+) 50.Kd3 Kg5 51.Kc2 Bf4 52.Kd3 Kh5 53.Ke2 Kg5 54.Kf2 (54.Kd3 h5 55.Kc2 h4 56.Kc3 h3 57.Kb2 Be5 58.Ka3 h2 59.Kb3 h1Q 60.Kc2 Qe1 61.Kb3 Bd5 62.Kc2 Qc3 63.Kd1 Bf3) 54...h5 55.Ke1 (55.Ke2 h4 56.Kd1 h3 57.Kc2 h2 58.Kb1 h1Q 59.Kb2 Qd1 60.Kc3 Bd5 61.Kb4 Qb3) 55...h4 56.Ke2 h3 57.Kf2 (57.Kd3 h2 58.Kc4 h1Q 59.Kc3 Qc1 60.Kb4 Qc2 61.Ka3 Bd6) 57...h2 58.Kf1 h1Q 59.Ke2 Qe4 60.Kd1 (60.Kf2 Bd2 61.Kg3 Qg2) 60…Bg3 (60...Bg3 61.Kd2 Qg2 62.Kc3 Be1 63.Kb3 Bd5 64.Ka4 Qa2; 60...Qd3 61.Ke1 Bg3) 0–1. afsharian – wohlstand (1640), lichess.org, 2018.

5.a4 c6 6.e3 c5 (6...a6 7.d4=) 7.Nf3 (7.Qf3!? d5 8.Qd5 Qd5 9.cd5+–) 7...Bb7+= 8.Be2 d6 (8...a6 9.d4+=) 9.Nc3 (9.Ng5 e5 10.Bf3 Qe7+–) 9...Qd7 (9...a6 10.0–0+=) 10.0–0 Qc8 11.d4 Nd7 (11...a6 12.d5+–) 12.Rc1 (better 12.d5+–) 12...d5? (12...a6!?+–) 13.a5 (13.cd5!? Qd8+–) 13...dc4 14.Bc4 (14.a6 Bf3 15.Bf3 Rb8+–) 14...ba5 15.Qa4?? (better 15.Na4 Nb6 16.Be2+–) 15...Nb6=+ 16.Qa2 Nc4 17.Qc4 Qc7? (better 17...Bf3!? 18.gf3 cd4 19.Qd4 Qf5=) 18.dc5+– Qc6?? (better 18...Bf3 19.gf3 Qe5+–) 19.bc6+– Bc6 20.Nd4 Bb7 21.c6 Bc8 22.Ncb5 e6 23.Nc7 (23.Nd6 Ke7 24.Nc8 Kf7 25.Qe6 Kf8 26.Ba3 Ne7 27.Be7 Ke8 28.Nd6) 23...Ke7 24.Ba3 Kf7 (24...Kd8 25.Nce6 Ke8 26.Ng7 Kd8 27.c7 Kd7 28.Qe6) 25.Nde6 Ne7 (25...f5 26.Nd8 Kf6 27.f4 Rb8 28.Qf7) 26.Ng5 Kf8 27.Qf7 1–0. BeepBeepImAJeep (2720) – balenpro (1725), lichess.org, 2015.

5.e3 Bb7 6.a4 d6 (6...a6 7.d4=) 7.Nf3 e5 8.Be2 Ne7 9.0–0 f5 (9...0–0 10.d4+=) 10.Nc3 (10.d4 Nd7+–) 10...Qd7 11.h3 (11.a5 ba5 12.d4 a6+=) 11...Qe6 (11...e4 12.Nh2+=) 12.Qc2 Qf7 13.d4 ed4 (13...0–0 14.d5+=) 14.Nd4 (14.ed4 c6+–) 14...Nd7 (14...0–0+=) 15.Bf3 (better 15.a5!?+–) 15...Bf3= 16.gf3 (16.Nf3 Qc4 17.a5 Nc5=) 16...Ne5 (16...Qc4 17.Rfd1–/+) 17.f4 (17.Nd5!? Nd5 18.cd5 Qd5 19.Rfd1=+) 17...Nc4–/+ 18.Nce2 Na5 (better 18...a6!?–/+) 19.Bc3 (19.Qc7 Nc4 20.Ba3 Rc8 21.Qa7 0–0=) 19...Nb7 20.Bb4 (20.Ne6 Qe6 21.Bg7 Rg8 22.Qc7 Nc5=) 20...0–0–0 (20...Nc5 21.a5–/+) 21.Nc6? (better 21.a5!?=) 21...Nc6–/+ 22.Qc6 (better 22.bc6 Nc5 23.Rab1–+) 22...Qe8?? (22...Ba1!? 23.Ra1 Qd7 24.Nd4 Qc6 25.Nc6–+) 23.Rfc1 (better 23.Bc3!? Bc3 24.Qc3=+) 23...Qc6–/+ 24.Rc6?? (better 24.bc6 Nc5 25.Bc3 Bc3 26.Rc3–/+) 24...Ba1–+ 25.Bc3 Bc3 26.Nc3 (26.Rc3 Nc5–+) 26...Nc5 (better 26...Na5 27.Nd5 Nc6 28.bc6–+) 27.Nd5 Rd7 28.Nf6 (28.Kg2 Na4 29.Rc4 Nc5–+) 28...Re7 (28...Rg7 29.f3–+) 29.Nd5 Rf7 30.a5 (30.Nc3 Kb7–+) 30...Kb7 (better 30...ba5!? 31.h4–+) 31.a6 (31.ab6 ab6 32.Kg2 Ra8–+) 31...Kc8 (better 31...Na6 32.Rc2 Nc5 33.Nb4–+) 32.Kf1 Ne4 (32...Re8 33.Kg2–+) 33.Ke2 Re8 34.f3 Nf6 35.Nb4 Nd7 36.Kd3 (36.Rc3 Nb8–+) 36...Nc5 37.Kd4 (37.Ke2 h6–+) 37...h6 (37...g5 38.fg5 Ne6 39.Kd5 Ng5 40.Rc3–+) 38.Nd5 (38.h4 g5 39.fg5 hg5 40.hg5 Ne6 41.Kd3 Ng5–+) 38...Rh7 (better 38...g5–+) 39.Nb6 (39.Nf6 Rhe7 40.Ne8 Re8 41.h4–+) 39...ab6 40.a7 (40.e4 fe4 41.Ke3–+) 40...g5 (better 40...Kb7–+) 41.a8Q+– Kd7 42.Qa7 (42.Rc7 Kc7 43.Qe8 gf4 44.Qc6 Kd8 45.Qb6 Rc7+–) 42...Rc8 (better 42...Ke6 43.Rb6 Rhe7+–) 43.Kd5?? (43.Rb6 Ke8 44.Rd6 Nb3 45.Kd3 gf4 46.Rd5+–) 43...gf4+= 44.ef4 Re7 45.Rd6 (45.Rb6 Nd3 46.Rd6 Ke8+=) 45...Ke8 46.Rc6 Rd7? (better 46...Rd8 47.Kc4 Re2+=) 47.Ke5 (47.Kc4 Kf7 48.Qa1 Rd6+–) 47...Re7 (better 47...Rf7 48.Kd4 Rd8 49.Kc4 Rd2 50.Qa8 Rd8+–) 48.Kf5 Rd7 (48...Kd7 49.Rb6 Ne6 50.Rb8 Rb8 51.Qb8 Rf7 52.Ke5+–) 49.Kg4 (49.Rh6 Ke7+–) 49...Rd5 (49...Ke7 50.Qa1 Rg8 51.Kh4+–) 50.Kh4 (better 50.Rh6!? Ke7 51.Rh7 Kd6+–) 50…Rg5 (50...Rg5 51.fg5 hg5 52.Kg5 Kd7 53.Rc5 bc5+–; 50...Rd4 51.Qa1 Rcd8+–) 0–1. RichardSommer (2030) – mohamedmohamed23 (2020), lichess.org, 2020.

5.e3 Bb7 6.Nf3 e6 7.a4 Ne7 8.Be2 d6 (8...0–0 9.a5=) 9.Nd4 (better 9.0–0+=) 9...Bg2? (better 9...Qd7 10.Bf3 c6+=) 10.Ne6+– Qd7?! (10...Qc8 11.Ng7 Kf7+–) 11.Ng7 Kf8 (11...Kf7 12.Bg4 Bh1 13.Bd7 Nd7 14.f3 Kg7 15.Kf2 Bf3 16.Qf3+–) 12.Rg1 (12.Bg4 f5 13.Rg1 fg4 14.Rg2 Rg8 15.Rg4 Rg7 16.Qf3 Rf7 17.Qa8 Qg4 18.Qb8 Nc8+–) 12...Kg7 13.Rg2 Qh3 (13...c6 14.Bg4 Qc7 15.Nc3+–) 14.Bf3 c6 15.Nc3 Qd7 (15...Rf8 16.a5 ba5 17.d3+–) 16.Ne4 Rf8 (16...Ng8 17.Qb1 Qe6 18.Ng5+–) 17.Qb3 (17.Bg4!? Qb7 18.Qf3 Ng8+–) 17...Qc7 (17...d5 18.cd5 Nd5 19.Ng5+–) 18.Qc3 (18.Ng5 Qd7 19.Bg4 Nf5+–) 18...Nd7 19.Ba3 (better 19.Ng5 Nc5+–) 19...c5 (19...Ne5 20.Be2 c5 21.f4+–) 20.Bb2 (better 20.Ng5 Qc8 21.Ne6 Kh8 22.Nf8 Qf8 23.Ba8 Qa8 24.Rg1+–) 20...Ne5 21.Be2 Rad8 (21...Qb7 22.f3 Nf5+–) 22.f4 Nd7 23.h4 (23.Ng5!? Kg8+–) 23...Qb7 (23...Nf5 24.Bg4 Nh4 25.Rh2+–) 24.Bf3 d5 (24...Qc8 25.Ng5 Kh8 26.h5+–) 25.Ng5 d4 (25...Kg8 26.Ne6+–) 26.Bb7 dc3 27.Bc3 Rb8 (27...Nf5 28.Ne6 Kf7 29.Nd8 Rd8 30.Rh2+–) 28.Ne6 Kf7 29.Nf8 Kf8 (29...Nf8 30.Be4+–) 30.Bf3 (30.Bc6 Rd8+–) 30...Nf5 31.Bg4 Rd8 (31...Nh4 32.Rh2 h5 33.Bh5 Ng2 34.Rg2 gh5 35.Rh2+–) 32.Bf5 gf5 33.Ke2 Kf7 34.Rag1 (34.Rag1 Ke6 35.Rg7+–) 1–0. BeepBeepImAJeep – Ile_de_La_Reunion (1705), lichess.org (IM BeepBeepImAJeep simul), 2017.

5.e4 Bb7 6.d3 d6 (6...a6 7.Nc3=) 7.Be2 e5 8.Bf3 Ne7 9.Nc3 Nd7 10.Nge2 Nc5 (10...0–0 11.0–0=) 11.Na4 (11.d4 ed4 12.Nd4 0–0=) 11...Qd7 12.Nc5 (12.0–0 0–0–0=) 12...bc5 (12...dc5 13.Nc3=) 13.a4 a6 14.Nc3 c6 15.h3 (15.ba6 Bc8=) 15...ab5 16.cb5 cb5 17.ab5 The passed pawn on b5 quickly leads to threats 17...0–0 18.Ra8 Ra8 19.0–0 Qe6 20.Qc2 h6 21.Nb1 Ra5 22.Na3 f5 (22...Qd7 23.Nc4 Ra7 24.Rb1+=) 23.Qc3 (23.ef5 Qd7 24.Qc4 d5 25.Qc5 gf5 26.Rc1+–) 23...Ra7+= 24.Nc4 fe4 (24...Qd7 25.Rb1=) 25.de4+– (worse 25.Be4 d5 26.b6 Ra6–/+) 25...Ra4?? (25...d5 26.Bg4 (26.Ne5?! Ra2=) 26...Qf6 27.ed5 Nd5 28.Qe5+–) 26.Nd2?? (better 26.Nd6 Ba8 27.Bg4 (worse 27.Qc5 Kh7+–) 27...Qd6 28.Qb3 Nd5 29.Qa4+– (29.ed5?! Rb4 30.Be6 Kh7+–)) 26...Nc8 27.Bg4 Qe8?? (better 27...Qf7+=) 28.Qb3+– Kh7 (28...d5 29.Qa4 Nd6 30.ed5 Bd5 31.Be2+–) 29.Qa4 Qd8 30.Nc4 Bf8 (30...Be4 31.Bc8 Bd3 32.Rd1 Bc4 33.Qc4 Qc8 34.Rd6+–) 31.Rd1 Qf6 (31...Be4 32.Bc8 Qc8 33.Nd6+–) 32.Bc8 Bc8 33.Qa7 Kg8 34.b6 Qd8 (34...Qe6 35.Rd5+–) 35.Bc3 (35.Qa8 Qd7 36.Nd6 Bb7 37.Qb7 Qe6+–) 35...Be7 (35...Qf6 36.b7 Bb7 37.Qb7+–) 36.b7 (36.Ne5 Kf8 37.Ng6 Ke8+–) 36...Bb7 37.Qb7 Bf8 38.Qd5 Kg7 (38...Kh7 39.Qf7 Bg7 40.Rd6 Qb8 41.Be5 Qf8 42.Qg6 Kg8 43.Rd8 Qd8 44.Qg7) 39.Nd6 (39.Be5 de5 40.Qe5 Qf6 41.Rd7 Kh8 42.Qf6 Kg8 43.Qg6 Bg7 44.Qg7) 39...Bd6 (39...Qe7 40.Rb1 g5 41.Nf5 Kf6 42.Rb6 Qd6 43.Be5 Kg6 44.Qg8 Bg7 45.Rd6 Kh5 46.Qf7) 40.Qd6 (40.Be5 Be5 41.Qe5 Kh7 42.Rd8 g5 43.Qf6 c4 44.Qf7) 40...Qd6+– 41.Rd6 Kf7 42.Be5 c4 43.Rc6 (43.Rf6 Ke7+–) 43...h5 44.Rc4 Ke6 45.f4 g5 46.g3 gf4 47.gf4 h4 48.Kf2 Kd7 (48...Ke7 49.f5 Kf7 50.Rc7 Kg8 51.f6 Kf8 52.Bd6 Kg8 53.f7 Kg7 54.f8Q Kg6 55.Qf5 Kh6 56.Bf4) 49.f5 Ke7 50.Rc7 Kd8 (50...Kf8 51.f6 Kg8 52.f7 Kf8 53.Bd6 Kg7 54.f8Q Kg6 55.Qf5 Kh6 56.Bf4) 51.f6 (51.f6 Ke8 52.Bd6 Kd8 53.e5 Ke8 54.f7 Kd8 55.f8Q) 1–0. lindsey000 – vios, gameknot.com, 2017.

4.c4 d6

5.a4 e5 6.e3 Ne7 7.Nf3 0–0 8.Be2 Be6 9.0–0 Nd7 10.Nc3 c6 11.h3 (11.d4 d5+=) 11...d5= 12.Qb3 Rb8 (12...Nb6 13.c5 Nc4 14.Bc1=) 13.Rfc1 d4 (better 13...Nb6!? 14.d3 a5+=) 14.ed4+– ed4 15.Nd4 Bf7 (15...Nc5 16.Qc2 Bf5 17.Nf5 Nf5 18.Ba3+–) 16.Qc2 cb5 (16...Ne5 17.Ne4+–) 17.ab5+– b6 (better 17...Ra8+–) 18.Ra7 Nc5 19.Re7 Qe7 20.Nc6 Qc7 21.Nb8 Rb8 22.Nd5 (22.d4!? Nd7+–) 22...Bd5 23.cd5 Rc8? (23...Qf4+–) 24.d4 Na6 (24...Bh6 25.d6! Qd6+–) 25.Qd2 (25.Qc7 Nc7 26.d6 Bf8 27.Rc7 Rd8+–) 25...Qd7 26.ba6 Rd8 (26...Rb8 27.Qf4 Ra8 28.Qc7+–) 27.Bf3 f5 28.Qb4 b5 29.Rc6 (better 29.d6 Bf6+–) 29...Bf8 (29...f4 30.Qb5 Qe8 31.a7 Qe1 32.Kh2+–) 30.Qb5 Qe7 31.Qb7 (better 31.d6 Qe1 32.Kh2 Qd2+–) 31...Qe1 32.Kh2 Bd6 (32...Bh6 33.Qc7 Ra8+–) 33.Rd6! Rd6 A deflection 34.Qb8 Kg7 35.Qd6 Qe8 36.Qe5 Kh6 (36...Qe5 37.de5 h6 38.e6 Kf8 39.d6 Kg8 40.a7 g5 41.a8Q Kh7 42.Qb7 Kg6 43.Qf7) 37.Qe8 (37.Qe8 Kg7 38.Qe7 Kg8 39.a7 h6 40.a8Q; 37.Bc1 g5 38.Qf6 Qg6 39.Bg5) 1–0. RichardSommer (2010) – steepthinking (1985), lichess.org, 2020.

5.a4 Be6 6.e3 a6 7.d4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nf3 cb5 11.cb5 Qa5 12.Bc3 Qb5?? (better 12...Qa2+–) 13.Bb5+– Nc6 (13...Kf7 14.d5 Bc8 15.Qd4+–) 14.Bc6 (better 14.d5 Bd7 15.Qa4 Nh6 16.dc6 bc6 17.Bc6 Bc6 18.Qc6 Kf7 19.Qc4 Kf8+–) 14...bc6 15.Qa4 Nh6 (15...Bd7 16.Qa8 Kf7 17.Qb7+–) 16.Qa8 Kf7 17.Qc6 Rb8 18.0–0 Nf5 (18...Bg4 19.Rc1+–) 19.Nbd2 (better 19.d5 Bc8+–) 19...Rc8 20.Qe4 (better 20.Qb7 Rc3 21.g4 Nh6+–) 20...Rc3 21.Ra1 (21.d5 Bc8+–) 21...d5 22.Qf4 Bh6 23.Qb8 Rc8 24.Qb6 Nd6 25.Ra7 (better 25.Nb3 Nc4 26.Qb5 Nd6+–) 25...Nf5 (25...Rc1 26.Nf1 Nc8+–) 26.Qb7 (better 26.Nb3!? Bf8+–) 26...Bf8 27.g4 (27.Ra6 Rc1 28.Nf1 Bg7+–) 27...Nd6 28.Qb4 Rd8 (28...Rc1 29.Kg2 Nc8 30.Ra5+–) 29.g5 fg5 (29...Bg7 30.Qb6 Nc8 31.Qd8 Na7 32.Nb3+–) 30.Ng5 Kf6 31.Nh7 Kf7 (31...Kg7 32.Qb6 Rd7 33.Nf8 Kf8 34.Qb8 Kg7 35.Ra8+–) 32.Nf8 (better 32.Qb6 Ke8 33.Nf8 Bf5+–) 32...Kf8 33.Nf3 Re8 (33...Rc8 34.Ne5 Bf5 35.Qa5+–) 34.Ne5 Bf5 (34...Nc8 35.Ra6 Bf5 36.Qc5+–) 35.Qc5 Ne4 (35...Rc8 36.Qa5+–) 36.Qd5 Nf6 37.Qf7 1–0. AleksandrNekhoroshik (1680) – KMG06 (1660), lichess.org, 2020.

5.a4 Be6 6.e3 Nd7 7.d4 c5 8.d5 Bf7 9.Nd2 e6 (9...Nh6 10.Be2+=) 10.e4 (10.Ne4 Bf8+–) 10...Ne7+= 11.Qb3 (11.Ngf3 0–0+=) 11...0–0= 12.Ngf3 Nc8 (12...ed5 13.ed5 Re8 14.Be2=) 13.a5 Ncb6?? (better 13...ed5 14.cd5 f5 15.Bg7 Kg7=) 14.ab6+– Qb6 15.Bd3 ed5 16.cd5 Bh6 (16...f5 17.Bg7 Kg7 18.ef5 Rae8 19.Kd1+–) 17.Bc3 Rac8 (17...Qd8 18.0–0+–) 18.Bc4 (better 18.Ba5 Bd2 19.Kd2+– (worse 19.Bd2 c4 20.Bc4 Rfe8+–)) 18...Ne5 (18...Qc7 19.Ra7 Ra8 20.Ra8 Ra8 21.0–0+–) 19.Ne5 (19.Ba5 Qa5 20.Ra5 Ra8+–) 19...fe5 (19...de5 20.0–0+–) 20.0–0 (better 20.Ba5 Ra8+–) 20...Be8 (20...Qd8 21.Ra7 b6 22.Rfa1+–) 21.g3 (21.Ba5!? Bd2 22.Bb6 ab6+–) 21...Bd7 (21...Bd2 22.Bd2 a6 23.Ba5+–) 22.Qd1 (better 22.Ba5 Bd2 23.Bb6 ab6 24.Ra7+–) 22...Qd8?! (22...Bb5 23.Rb1 a6 24.Bb5 ab5 25.Qg4+–) 23.h4 (23.Ra7 Bh3 24.Re1 Qd7+–) 23...Qe8 (23...Bh3 24.Re1 Qf6 25.Qe2+–) 24.Rb1 (better 24.Ra7!? Bh3 25.Re1 Rc7+–) 24...b6 25.Nf3 (25.Qe2 Bh3 26.Rfe1 Qf7+–) 25...Bg4 26.Be2 Bh3 27.Re1 Qd7 (27...Qf7 28.Qd3+–) 28.Nh2 (28.Ng5 Bg5 29.hg5 Rc7+–) 28...Qf7 29.f3 (better 29.Bf3+–) 29...Be3+= 30.Kh1 Qg7? (30...Bf2 31.Rg1+=) 31.g4?? (better 31.Bf1 Bf1 32.Re3+– (32.Nf1?! Bf2+–)) 31...Qh6 32.Bf1 Qf4?? (better 32...Bf1 33.Rf1 Qh4+=) 33.Bh3+– Qg3 (33...Bf2 34.Re2 Qg3 35.Qf1+–) 34.Bg2 (better 34.Re3 Qh3 35.Qe1+–) 34...Qh4 (34...Bf4 35.Nf1 Qh4 36.Kg1+–) 35.Qe2 (better 35.Re3 Rc7 36.Qe1 Qe1 37.Ree1+–) 35...Bf4 (35...Bf2 36.Rg1! Bg1 37.Kg1+–) 36.Bf1 Bg3 37.Red1?? (better 37.Kg1 Be1 38.Be1+–) 37...Rf3–/+ 38.Rd2 Rf2 39.Qf2 Bf2 40.Rf2? (better 40.Re2–+) 40...Qf2 41.Rb2 (41.Re1–+) 41...Qe3 42.Bd2 Qe4 (42...Qd4!? 43.Bc1 Qe4 44.Kg1 Qd4 45.Kh1–+) 43.Bg2 Qd4 44.Rc2 c4 (44...Qd3 45.Rb2–+) 45.Nf3 (45.Nf1 Qg4 46.Ne3 Qg3–+) 45...Qg4 46.Rc3 (46.Bc3 Rc5 47.Rb2 Rd5–+) 46...Qe4 (better 46...Qh5 47.Nh2–+) 47.Ng5 Qb1 48.Kh2 Qb5 49.Ne6 (49.Ne4 Qb2–+) 49...Qb2 50.Be1 Qe2 (50...b5 51.Rf3 b4 52.Bh4–+) 51.Rc1 (51.Bh4 Qd2 52.Ra3 a5–+) 51...Qe3 52.Ra1 Qh6 53.Bh3 (53.Kg1 c3 54.Bc3 Rc3–+) 53...g5 (better 53...c3 54.Ng5 Rc7 55.Ne6–+) 54.Ng5 (54.Bd2 Qh4 55.Rg1 h6–+) 54...Qg5 (better 54...Rc5 55.Ne6 Rd5 56.Ra7–+) 55.Bc8 Qf4 56.Bg3 (56.Kg2 c3! 57.Be6 Kg7 58.Ra7 Kh6 59.Bc3 Qe4 60.Kf2 Qc2 61.Kf1 Qc3–+) 56...Qd2 57.Kh3 Qd5 58.Ra7 c3 59.Re7 (59.Bf5 h5 60.Ra1 Qf3 61.Be6 Kh7–+) 59...c2 (better 59...Qh1 60.Kg4 c2 61.Be6 Kf8 62.Rf7 Ke8 63.Rc7–+) 60.Be6 Kf8 (better 60...Qe6! 61.Re6 c1Q 62.Rd6 Qh1 63.Bh2 b5–+) 61.Rf7 Ke8 62.Bd5 c1Q 63.Rh7 Qc3 64.Kh4?? (better 64.Rh8 Ke7 65.Rh7 Kf8 66.Rd7–/+) 64...Qd4–+ 65.Kg5 Qd5 66.Kf5 (66.Bh4 e4 67.Kf4 Qe5 68.Kg4 d5–+) 66...b5 (66...Qd3 67.Ke6 Qh7 68.Kd6 Qd3 69.Ke5 Qg3 70.Kd4 Qg4 71.Kd3 b5–+) 67.Rh8 Kd7 68.Bh4 Qe6 (68...e4 69.Kg6–+) 69.Ke4 Qg4 70.Kd5 (70.Ke3–+) 70…Qd4 (70...Qf3) 0–1. afsharian – Selter, lichess.org, 2019.

5.e3 Nh6 6.a4 (6.Nf3 e5=) 6...0–0 7.Nf3 Bg4 8.Be2 Nd7 (8...e5 9.0–0=) 9.h3 Be6 10.0–0 Qc8 (10...Bf7 11.d4+=) 11.d4+– Nb6 (11...Bf7 12.a5+–) 12.d5 Bh3 (12...Bf7!?+–) 13.gh3+– Qh3 14.Nd4?? (better 14.Qd4 Rf7 15.Qf4+–) 14...f5= 15.Bf3?? (15.Nc3 Be5 16.Nf3 Qg4 17.Kh1 Qh3 18.Kg1 Ng4–/+) 15...Nc4 (15...Be5 16.Re1 Bh2 17.Kh1 Bg3 18.Kg1 Qh2 19.Kf1 Qf2) 16.Bc3?? (16.Bg2 Nb2 17.Bh3 Nd1 18.Rd1 a6+=) 16...Ne5 (16...Be5 17.Re1 Bh2 18.Kh1 Bg3 19.Kg1 Qh2 20.Kf1 Qf2) 17.Bg2+– Qh4 18.Ne6?? (better 18.Nd2+=) 18...Neg4 19.Re1 Qf2 20.Kh1 Qh4 21.Kg1 Bc3 22.Nc3 Qh2 (22...f4 23.Nf8 Rf8 24.Ne4 Qh2 25.Kf1 fe3 26.Qf3 Rf3 27.Bf3–+) 23.Kf1 Rf6?? (23...f4!? 24.ef4 Rf4 25.Nf4–+) 24.Qf3?? (better 24.Qd2=+) 24...Qe5–+ 25.Rac1?? (25.Kg1 Qc3 26.Rac1–+) 25...Nh2 26.Kg1 (26.Ke2 Nf3 27.Bf3 Qh2 28.Kd1 Rc8–+) 26...Nf3 27.Bf3 Ng4 (27...Qg3 28.Bg2 Ng4 29.Re2 Ne3 30.Rf2–+) 28.Bg4 (28.Re2 Qg3 29.Bg2 Ne3–+) 28...fg4 29.Ne2 (29.Nf4 g5 30.Ng2 Raf8–+) 29...Qd5 (29...Qe3 30.Kh1 Qf3 31.Kg1 Qf2 32.Kh1 g5 33.Ng5 Rh6 34.Nh3 Rh3) 30.N2f4–+ Qf3 (30...Re6?! 31.Nd5 Re5 32.Nc7–/+) 31.Rc7 Qg3 32.Kf1 h5 (32...g5 33.Ng5 e5 34.Ne4 Qf3 35.Kg1 Qe4 36.Rg7 Kg7 37.Nh5 Kg6 38.Nf6 Kf6 39.b6–+) 33.Re2 (33.Ke2 Re6! 34.Ne6 Qg2 35.Kd3 Qf2–+) 33...h4 34.Rg2 (34.Re7 Rc8 35.Rg7 Kh8–+) 34...Qe3 35.Re7 h3 (35...Rc8 36.Re8 Re8 37.Re2 Qc1 38.Re1 Rf4 39.Kg2 Qd2 40.Kg1 Qe1 41.Kg2 Rf2) 36.Re2 Rf4 37.Nf4 Qf4 38.Kg1 Rf8 39.Re8 (39.R7e3 g3 40.Rf3 Qc1 41.Re1 Qe1 42.Rf1 Rf1) 39...Qf1 (39...g3 40.Rf8 Kf8 41.Rc2 Qd4 42.Rf2 Qf2 43.Kh1 Qe1) 40.Kh2–+ Re8 41.Re8 Kf7 42.Re3 (42.Re7 Ke7 43.Kg3 Qf3 44.Kh4 h2 45.Kg5 h1Q 46.a5 Qh5) 42…Qg2 0–1. KLINGON09 (1750) – ThunderRoad (1755), lichess.org, 2019.

4.c4 e5

5.a4 d6 6.e3 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Nd7 (9...f5 10.d4=) 10.Nc3 Nb6 11.Be2 (11.d4 Ne7+=) 11...Be6= 12.Nd5 (better 12.d3!?=) 12...Nd5–/+ 13.cd5 Bd5 14.0–0 b6 (14...f5 15.Qc2–/+) 15.d3 (15.Qc2 f5=) 15...Bb7 (15...f5 16.Qc2=+) 16.e4 (16.Qc2!?=) 16...Ne7=+ 17.Nd2 0–0 18.Nc4 (18.d4 d5=+) 18...f5–/+ 19.Bf3 fe4 (19...Qe8 20.Qb3 Qf7 21.Qc2–/+) 20.de4 Qd7 21.Qb3 Kh8 22.Rd1 Qe6 23.h3 h5 (better 23...Qf6–/+) 24.g4?? (24.Qc2!?=+) 24...h4?? (24...Rf3 25.Qf3 Qc4 26.gh5 Be4 27.Qg4–+) 25.g5? (better 25.Bg2–/+) 25...Qh3 (25...Rf3 26.Qf3 Qc4 27.Re1–+) 26.Rd3 (26.Nd2 d5! 27.Re1 Rf4–+) 26...Qe6 (26...Rf3 27.Rf3 Qg4 28.Kf1 Be4 29.Nd2 Bf3 30.Qf3–+) 27.Bg2? (27.Nd2 Qb3 28.Rb3–+) 27...Qg4 28.Rh3 (28.Qd1 Qg5 29.Nd2 Rf4–+) 28...Qg5 (better 28...Be4 29.Ne3 Qg5 30.Qb4–+) 29.Bc3 (29.Qc2 Bc8 30.Rh2 Bh6–+) 29...Qf6 (better 29...Be4 30.Rh2 Qc1 31.Bf1 Rf4–+) 30.Be1 (30.Rf3 Qe6–+) 30...g5 31.f3 (31.Rf3 Qe6–+) 31...Ng6 32.Bf2 (32.Rh2 Nf4 33.Nd2 Qf7–+) 32...Nf4 (32...g4 33.Rh2 gf3 34.Bf1 Qg5 35.Kh1–+) 33.Rh2 Qe6 (better 33...Be4 34.Nd2 Bd5–+) 34.Qc3 (34.Qc2–+) 34...Ne2 35.Kh1 Nc3 (35...Nc3 36.Bf1 Rf3–+) 0–1. AleksandrNekhoroshik (1745) – lemmon6266 (1770), lichess.org, 2021.

5.d4 ed4 6.Qd4 d6 7.a4 Ne7 8.Qf4 Nf5 (8...g5 9.Qd2=) 9.g4 (9.e4 Ne7=) 9...Nh6 10.h3 Be6 (10...Nd7 11.Qe3 Kf7 12.Bg2=) 11.e3 (11.Bg2!? c6 12.Nf3+=) 11...Nd7=+ 12.Bg2 (12.Ne2 Nc5 13.Nd4 Bd7=+) 12...Rb8 (12...Nc5 13.Ra3=+) 13.Nd2 Qe7 (13...Ne5 14.Ra3=+) 14.Ne2 0–0 15.0–0 f5 (better 15...Nc5 16.Nd4 f5=) 16.g5?? (better 16.Bg7 Kg7 17.Qd4 Kg8 18.Nf4+=) 16...Bb2–+ 17.gh6 Ba1 (17...Be5 18.Qf3 Ba1 19.Ra1–+) 18.Ra1 Qf6 (18...Ne5 19.Qd4 c5 20.Qc3–+) 19.Nd4 (better 19.Qd4–+) 19...c5?? (19...g5 20.Qf3–+) 20.N4b3?? (better 20.bc6 bc6 21.Qd6=) 20...Ne5–+ 21.Bf1 (21.h4 Rfd8–+) 21...g5 22.Qg3 Qg6 Black intends g4 (22...Kh8 23.Re1–+) 23.Nf3 (better 23.Nc5!? dc5 24.Qe5–/+) 23...Nf3–+ 24.Qf3 g4 25.Qg3 gh3 26.Qg6 hg6 27.Bh3 Bc4 28.Nd2 (28.Na5 Be6 29.Bg2 d5–+) 28...Be6 (28...Bf7!? 29.Kg2–+) 29.Nf3 Rbe8 30.Ng5 Rf6 (30...Bb3 31.Ra3 Bc4 32.Rc3–+) 31.Rd1 (31.Bg2 Re7–+) 31...d5 (31...Bb3!? 32.Rb1 Bc2 33.Rb2 Ba4 34.Bg2–+) 32.Ne6 (32.Bg2 Kh8–/+) 32...Ree6 (32...Rfe6 33.Rd5 b6 34.Rd7–+) 33.Rd5 c4 (33...b6 34.a5 Rd6 35.Re5–+) 34.Rc5–/+ Re4 (34...Kh7 35.Rc4 Re7 36.Rd4–/+) 35.Bg2 Rg4 (35...Re7 36.Rc4 g5 37.e4–/+) 36.f3 (36.Kf1 Kh7 37.Bb7 c3=+) 36...Rh4 37.f4 Rh6 (37...Rd6 38.Bb7 Rd1 39.Kf2 Rd2 40.Kg1–/+) 38.Rc4 g5?? (38...b6 39.Bd5 Kf8 40.Rc8 Ke7 41.Rc7 Kd8 42.Ra7=+) 39.Bd5 (better 39.fg5 Rhg6 40.gf6+–) 39...Kh7 (39...Kf8 40.Bb7 g4 41.Rc8 Kg7 42.Bd5=+) 40.Rc7 (40.fg5 Rhg6 41.Rc7 Kh8 42.Rc8 Kg7=) 40...Kg6=+ 41.Rb7 gf4 42.ef4 Rh4 (42...Rh7 43.Rh7 Kh7 44.a5=+) 43.Ra7= Rf4 44.a5 Kh5 (44...Kh6 45.Kg2=) 45.Bf7 (45.a6 Rg6 46.Bg2 Kh6+=) 45...Kh4 46.Be8 (46.Rc7 Rd6=) 46...Rg4 (46...Rd6 47.Bc6=+) 47.Kf2+= Re6 48.Rh7 Kg5 49.Bd7?? (better 49.Rh5 Kf6 50.Rh6 Ke5 51.Re6 Ke6 52.Kf3=) 49...Rf4–+ 50.Kg2 Re2 51.Kg1? (better 51.Kg3 Rd4 52.Kf3–+) 51...Rg4 (better 51...Rd4 52.Rg7 Kf4–+) 52.Kf1= Rd2 53.Ke1?? (53.Rg7 Kf4 54.Re7 Rgg2=) 53...Rb2 (better 53...Ra2!? 54.Rg7 Kf4 55.Rg4 fg4–/+) 54.Rg7=+ Kf4 55.Rg4 Kg4 (better 55...fg4 56.Kf1 g3=+) 56.a6+– Ra2 57.Bc8 Kf3? (better 57...Kf4!? 58.b6 Ke3+–) 58.Bf5 Ra1? (58...Ke3 59.Kd1 Ra5+=) 59.Kd2 Ra2 60.Kc3 Ra3 (60...Kf4 61.Bd3 Ke5 62.b6+–) 61.Kb4 Re3 (61...Ra1 62.Bc8 Rb1 63.Ka5+–) 62.Ka5 (better 62.a7 Re8+–) 62...Kf4 63.Bd7 Ke5 (63...Ra3 64.Kb6+–) 64.Bc6 (better 64.b6 Kd6 65.Ba4 Re5 66.Bb5+–) 64...Kd6 65.Kb6 Re7 (65...Rh3+–) 66.a7 Ke5 67.Bb7 (better 67.a8Q!? Rf7 68.Qe8 Kf6+–) 67...Re8 68.a8Q Ra8 69.Ba8 Kd6 ½–½. afsharian – Khelveen, lichess.org, 2018.

5.d4 Qe7 6.Ba3 (6.Nc3 Qb4 7.Qb3 Qb3 8.ab3 Kd8+–) 6...d6= 7.h3 (7.c5 f5=) 7...Nh6 (7...ed4 8.Bb2–/+) 8.Bb2 b6 (8...ed4 9.Nf3=+) 9.d5 (9.Nc3 c6=) 9...a6 10.a4 0–0 11.e4 f5 12.Qd3 (12.Nc3!?=) 12...fe4 13.Qe4 Nf5 (13...ab5 14.cb5 (14.ab5?? Ra1 15.Ba1 Bf5–+) 14...Nd7 15.Nc3–/+) 14.Nf3 (14.g4 Nh4–/+) 14...ab5 (14...Nd7 15.Ra3–/+) 15.cb5 (15.ab5!? Ra1 16.Ba1–/+) 15...Nd7 16.Qc2? (16.Nfd2 Nc5 17.Qc4 Nd4–+) 16...Bb7 (16...e4 17.Nh2 e3 18.f4–+) 17.Bc4 Nc5 Black prepares the advance e4 (17...e4 18.Nfd2 e3 19.0–0 ef2 20.Rf2 Qe1 21.Rf1 Qe3 22.Kh1 Ng3 23.Kh2 Nf1 24.Bf1 Be5 25.Kh1 Bd5 26.Be5 Ne5 27.Ra3–+) 18.Nbd2? (better 18.0–0–/+) 18...e4–+ 19.Ne4 (19.0–0 Bb2 20.Rae1 Na4–+) 19...Ne4 (19...Bb2 20.Qb2 Qe4 21.Qe2–+) 20.Bg7?! (20.0–0 Bb2 21.Rae1 Nd4 22.Nd4 Bd4 23.Re4 Qf6–+) 20...Neg3 (20...Ng5!? 21.Kd1 Qg7 22.Ra3–+) 21.Kd2 Qg7?? (better 21...Ne4 22.Kd1 Qg7–+) 22.fg3=+ Ng3 (22...Qh6 23.Kc3=+) 23.Rhe1 Nf5 24.g4?? (better 24.Qc3 Qh6 25.Kd1=+) 24...Nd4–+ 25.Nd4 Qd4 26.Qd3 Rf2 27.Re2 Re2 (27...Qa1?! 28.Rf2 Ra4 29.Qc3–/+) 28.Ke2 Re8 29.Kd2 Qa1 30.Bb3 (30.Qc3 Qa4 31.Qb3–+) 30...Qe1 31.Kc2 Re2 (31...Re2 32.Qe2 Qe2 33.Kb1 Qf1 34.Kb2 Qh3–+) 0–1. lindsey000 – quasarinfinity, gameknot.com, 2017.

5.a4 Ne7

6.Qb3 0–0 7.e3 d5 8.cd5+= Qd5?? (better 8...Kh8+=) 9.Bc4+– c6 (9...Be6 10.Bd5 Bd5+–) 10.Bd5 Nd5 (10...cd5 11.Ba3 Re8 12.Be7 Re7 13.Qd5 Be6 14.Qd8 Kf7 15.Nc3+–) 11.Ba3 (11.e4 Be6 12.ed5 Bd5+–) 11...Rd8 (11...Rf7 12.bc6 bc6 13.Nc3+–) 12.Nc3 (better 12.e4!? Be6 13.ed5 Bd5+–) 12...Kh8 (12...Be6 13.bc6 Nc6 14.Qb7 Nc3 15.dc3+–) 13.Nd5 Rd5 14.Rc1 Be6 (14...Rd8 15.Be7 Rg8 16.Qf7+–) 15.Nf3 (15.e4 Rd6 16.bc6 A) 16...Bb3 17.cb7 (17.Bd6?! Nc6 18.Rb1 Na5+–) 17...Rd8 18.ba8Q Ba4 19.Qa7+–; B) 16...Nc6 17.Qb7 Rb8+–) 15...Rd6 (15...cb5 16.e4 Rd6 17.Qb5+–) 16.Qb2 (better 16.bc6 A) 16...Bb3?? 17.cb7 (17.Bd6?! Nc6 18.Rb1 Ba4+–) 17...Bd5 18.Rc8 Bf8 19.ba8R Ba8 20.Rf8 Kg7 21.Bd6 Bf3 22.gf3+–; B) 16...Nc6 17.Qb7 Rb8+–) 16...Rd7 17.0–0 (17.d4 e4 18.Nd2 f5+–) 17...Bd5 18.d4 ed4 (18...Bf3 19.gf3 ed4 20.ed4+–) 19.Nd4 f5 20.Qd2 (20.Rfd1 Kg8+–) 20...Be4 (20...b6 21.Qe2 c5 22.Nf3+–) 21.f3 Bd5 22.Qb4 (22.Bb2 a6+–) 22...Bg8 (22...a5 23.Qc5+–) 23.bc6 Nc6 (23...bc6 24.Nc6 Nc6 25.Rc6+–) 24.Nc6 bc6 25.Rc6 Rad8 (25...a5 26.Qb5 Rd5 27.Qb7+–) 26.Rfc1 Be5 (26...Rd2 27.Rc8 Rd1 28.Rd1 Rc8 29.Rd7+–) 27.f4 (27.Bb2 Bg7 28.Rc8 Rc8 29.Rc8 h5+–) 27...Bf6 (27...Bg7 28.Bb2 a5 29.Bg7 Kg7 30.Qa5+–) 28.Rc7 (28.Rf6 Bf7 29.Rf7 Rf7 30.Qc3 Kg8+–) 28...Be6 (28...Rd2+–) 29.Rd7 Rd7 30.Qf8 Bg8 31.Qf6 Rg7 32.Bb2 (32.Bb2 Bd5 33.Qg7) 1–0. AleksandrNekhoroshik (1680) – Giordanomangi (1610), lichess.org, 2021.

6.Nc3 d5 (6...0–0 7.Nf3=) 7.e3 (7.cd5 Nd5 8.Nd5 Qd5=) 7...d4=+ 8.ed4 ed4 9.Nb1 (9.Ne4 f5 10.Nc5 Qd6=) 9...0–0 10.Bd3 c5 (10...Re8 11.Ne2=+) 11.Ne2 (11.Nf3 Re8 12.0–0 Nd7=) 11...Bf5 (11...Nd7 12.0–0=+) 12.Qb3 (12.Bf5 Nf5 (worse 12...gf5 13.0–0+=) 13.0–0 Nd7=) 12...Re8 13.0–0 Nd7 14.Na3 (14.Bf5 Nf5 (worse 14...gf5 15.Nf4+=) 15.Ng3 Ng3 16.Qg3 f5=+) 14...Ne5 (14...Qa5 15.Nb1–/+) 15.Bf5 Nf5 (worse 15...gf5 16.Rae1+=) 16.d3? (16.Rae1 Qa5 17.Nb1 Rad8=+) 16...Nd6 (16...Nf3! 17.gf3 Re2–+) 17.Ng3 (17.Rae1 Qa5 18.f4 Nd7=+) 17...f5 18.f4 (18.Rae1 Qh4 19.Qd1 f4–/+) 18...Ng4–/+ 19.Bc1?? (19.Rf3 Re3 20.Re3 de3–/+) 19...Ne3 (19...Qh4 20.h3 Qg3 21.hg4 Re2 22.Rf2 Qf2 23.Kh2 Qg2) 20.Be3=+ Re3 (20...de3 21.Rae1=+) 21.Rae1 (21.Nc2 Re8=) 21...Qe7 (21...Qa5 22.Nc2 Re1 23.Re1=+) 22.Nc2= Re1 23.Re1 Qh4 24.Rf1 (24.Qa3 Rc8=) 24...Re8 25.Qa3 Bh6 (better 25...b6!?=) 26.Qc5+– Bf4 27.Qd4?? (better 27.Qd5 Nf7 28.Qb7 (28.Qd4? Be3 29.Qe3 Re3 30.Ne3 Qd4–+) 28...Bg3 29.hg3 Qg3 A) worse 30.Qa7 Re2 (30...Qd3?! 31.Nd4 Qe3 32.Kh1=) 31.Qa8 Kg7=+; B) 30.Qf3+–) 27...Be3!!–+ (27...Bg3 28.hg3 Qd4 29.Nd4+–) 28.Qe3 (28.Ne3 Deflection from d4 28...Qd4) 28...Re3 29.Ne3 f4 30.Nd5 (30.Ngf5 Nf5 31.Nf5 gf5 32.h3–+) 30...fg3 31.hg3 Qg3 (better 31...Qd4 32.Rf2–+) 32.Rf3 Qe5 33.Nf6 (33.Re3 Qa1 34.Kh2 Qa4–+) 33...Kg7 34.Nd5 Nf5 35.a5 (35.Rf4 Qa1 36.Kh2 Qe1–+) 35...Nd4 (better 35...Qa1 36.Kf2–+) 36.Re3 Qf5 37.a6 (37.Re4 Nb3 38.a6 ba6 39.ba6 Nc1 40.Re7 Kh6–+) 37...ba6 38.ba6 Qg5 39.Kf2 (39.Re7 Kh6 40.Re3 Nc2 41.Rh3 Kg7–+) 39...Nf5 (39...Nc2 40.Rf3–+) 40.Re6 (40.Rf3–+) 40...Qd2 41.Kg1 Qd3 42.Nf4 (42.Rc6 Qd4 43.Kh2 Qe5 44.Kg1 Qe1 45.Kh2 Qg3 46.Kg1 Nh4 47.Rc7 Kh6 48.Rh7 Kh7 49.Nf6 Kh8 50.Kf1 Qg2 51.Ke1 Nf3 52.Kd1 Qd2) 42...Qd4 43.Kh1 Qf4 44.Rc6 Qh4 (44...Ng3 45.Kh2 Ne2 46.g3 Qg3 47.Kh1 Qg1) 45.Kg1 Qe1 46.Kh2 g5 (46...Qg3 47.Kg1 Ne3 48.Rc7 Kh6 49.Rh7 Kh7 50.c5 Qg2) 47.Rc7 Kg6 48.Rc6 (48.Rc8 Qg3 49.Kg1 Ne3 50.Rg8 Kh5 51.Rg5 Kg5 52.c5 Qg2) 48...Kh5 49.Rc5 (49.Rc7 Ne3 50.Rh7 Kg4 51.Rh3 Nf1 52.Kg1 Ng3 53.Kh2 Qh1) 49...Qg3 50.Kg1 (50.Kh1 Ne3 51.Rg5 Kg5 52.c5 Qg2) 50...Ne3 51.Re5 (51.Rg5 Kg5 52.c5 Qg2) 51…Qg2 0–1. BeepBeepImAJeep (2500) – auditor2016 (2345), lichess.org, 2017.

6.e3 0–0 7.Nf3 d6 8.Be2 b6 9.d4+= Bb7 10.0–0 Nd7 11.Nc3 Qe8 (11...c5 12.d5+=) 12.a5 Qf7 (12...ba5 13.Ra5 a6 14.Qc2+=) 13.a6+– Bc8 14.Rc1 Rd8 15.Ba3 (15.Nd5 c5 16.de5 Nd5+–) 15...Nf8 16.c5 (16.Nd5!? c6 17.Ne7 Qe7 18.bc6 Ba6 19.de5 fe5 20.Qd5 Qe6 21.Rfe1+–) 16...dc5+= 17.Nb1 (17.Qa4 cd4 18.ed4 Bd7+=) 17...cd4 (17...ed4 18.ed4 Nf5 19.Bb2=+) 18.ed4 (18.Rc7 Rd7 19.Rd7 Bd7 (worse 19...Nd7 20.ed4 e4 21.Nbd2+–) 20.ed4 e4=) 18...ed4 (18...Nf5 19.Bf8 Kf8 20.Bc4=+) 19.Nd4 (19.Rc7 Rd7 20.Bc4 Rc7 21.Bf7 Kf7+–) 19...Nd5 (19...Nf5 20.Bc4 Be6 21.Ne6 Ne6+=) 20.Bc4 (20.Nc6 Be6 21.Nd8 Rd8+–) 20...Kh8 (better 20...c5 21.bc6 Bh6+–) 21.Nf3?? (better 21.Qf3 c5 22.bc6+–) 21...Bg4 (21...Be6 22.Re1 Nf4 23.Nbd2=) 22.Qe2 (22.Qb3 Rd7 23.Nd4+–) 22...Bf3?? (better 22...Qe6=) 23.Qf3+– Bh6 (23...Rd7 24.Nc3 Ne6 25.Nd5+–) 24.Rcd1 Rac8 25.Rd5 (25.Bd5 Qg7+–) 25...Rd5 26.Bd5 Qg7 27.Bb2 (27.Re1!? Qd7 28.Re7 Qf5 29.Qf5 gf5+–) 27...Nd7 28.Be6 Rd8 (28...Rf8+–) 29.Bd7 Rd7 (29...Qd7 30.Bf6 Bg7 31.Bd8 Qd8+–) 30.Bf6 (30.Bf6 Kg8 31.Bg7 Bg7 32.Qa8 Kf7 33.Qa7+–) 1–0. BeepBeepImAJeep (2715) – barabashka_2903 (2350), lichess.org, 2020.

6.e3 c5 7.Nf3 (7.d4 ed4 8.ed4 cd4 9.Qd4 d5+=) 7...d6 (7...e4 8.Ng5 d5 9.cd5 Qd5 10.h4+=) 8.Be2 b6 (8...e4 9.Ng5 d5 10.cd5 Qd5 11.h4+=) 9.Nc3 Bb7 (9...f5 10.d4 e4 11.Nd2+=) 10.0–0+= a6 11.Qc2 a5 (11...f5 12.d4+=) 12.Rad1 0–0 13.d4 ed4 14.ed4 Qc7 15.dc5 dc5 16.Ne4 (16.Nd5 Nd5 17.cd5 Rd8+–) 16...Nf5 (16...Nd7 17.Rfe1+–) 17.Bd3 (17.Rfe1 Nd7+–) 17...Nd7+= 18.Ng3 (18.Rfe1 Rfe8+=) 18...Ng3 19.hg3 Rad8 20.Nh4 (20.Be4 Rfe8 21.Bb7 Qb7=) 20...Ne5=+ 21.Be5 fe5 22.Nf3 e4 (better 22...Bf3!? 23.gf3 Rf3=+) 23.Be4+= Be4 24.Qe4 Rd1 (24...Rfe8!? 25.Rd8 Qd8+=) 25.Rd1+– Rd8 26.Rd8 (26.Qe6 Kf8 27.Rd5 Rd5 28.cd5 Qd8+–) 26...Qd8 27.Qe6 Kh8? (better 27...Kf8!?+–) 28.Qb6?? (28.Ng5 Qd1 29.Kh2 Qh5 30.Nh3+–) 28…Qb6–+ 0–1. KLINGON09 (1895) – pierdola (1845), lichess.org, 2019.

4.c4 Nh6

5.a4 0–0 6.Qb3 d6 7.e4 (7.Nf3 Nf7=) 7...c5 (7...f5 8.c5 Nf7 9.Bg7 Kg7 10.ef5 Bf5 11.Nf3=+) 8.bc6 (8.Nf3 f5 9.Bg7 Kg7=) 8...Nc6 9.c5 (9.Nf3 f5 10.Bg7 Kg7=) 9...e6 (9...Nf7 10.cd6 Qd6=+) 10.Nf3 (better 10.cd6!? f5 11.Bg7 Kg7 12.Nc3=) 10...dc5–/+ 11.Bb5 f5 0–1. afsharian – phonix33, lichess.org, 2018.

5.a4 0–0 6.e3 c6 7.Nc3 (7.d4 d6=) 7...e6 (7...e5 8.d4=) 8.Nf3+= d5 (8...cb5 9.ab5 d6 10.Be2+–) 9.Be2 Nd7 (9...Nf7 10.cd5 cd5 11.Ba3+=) 10.d4 e5 (10...cb5!? 11.cd5 b4 12.de6 Nb6+–) 11.de5 (11.cd5 cb5 12.ab5 Nf5+–) 11...fe5 12.cd5 Nc5? (better 12...cb5!? 13.ab5 e4+–) 13.dc6+– bc6 14.Bc4 (14.Qd8 Rd8 15.bc6 e4+–) 14...Kh8 (14...Be6 15.Qd8 Rfd8 16.Be6 Ne6 17.bc6+–) 15.e4 (15.Qd8!? Rd8 16.bc6 e4+–) 15...cb5 (15...Qd1 16.Rd1 cb5 17.ab5+–) 16.Bb5 (16.Qd8!? Rd8 17.ab5 Bb7+–) 16...Be6 (better 16...Bg4 17.Qd8 Rfd8+–) 17.Nd5 (better 17.Rb1+–) 17...Ne4=+ 18.Ne3 (18.Nc3 Nf2 19.Kf2 Qb6 20.Ke2 e4 21.Ne4 Bb2=+) 18...Qa5 19.Nd2?? (better 19.Kf1=+) 19...Rfd8 (better 19...Nf2 20.Qc1 Nh1–+) 20.Nef1 Qb6?? (20...Ng4!? 21.Qe2 Ngf2 22.Ra3–+) 21.Qe2 (better 21.Ne4 Rd1 22.Rd1–+) 21...Bf5?? (better 21...Nd2 22.Nd2 a6–+) 22.Ne4+– a6 (22...Be4 23.Qe4 a6 24.Qc6+=) 23.Nfd2 (23.Bd3 Be4 24.Be4 Qb4 25.Nd2 Rd2 26.Qd2 Qe4 27.Kf1 Rc8+–) 23...ab5 (23...ab5 24.Qb5 Qc7+=). GuestDZQK – GuestTJDQ, freechess.org, 2016.

5.a4 0–0 6.e3 e5 7.Nc3 d6 8.Nf3 Bg4 9.Be2 Nd7 (9...f5 10.d3=) 10.d4+= f5 11.de5 de5 12.0–0 (12.Qd5 Nf7+=) 12...e4= 13.Nd4 Be2 14.Nce2 (better 14.Qe2 Be5 15.Rfd1+=) 14...Ne5 (14...Nc5 15.Nf4 Qd6 16.Ba3+=) 15.c5 (15.Ne6 Qd1 16.Rad1+–) 15...Nd3? (15...Qe7 16.Nf4+=) 16.Bc3?? (better 16.Qb3 Nf7 17.Ne6 Bb2 18.Nd8 Rad8 19.Rad1+–) 16...Ng4 (16...Nc5!? 17.Bb4 Qd6=) 17.h3+= Ngf2 (17...Nge5 18.Ne6 Qe7 19.Nf8 Rf8 20.Qb3 Rf7 21.c6 bc6 22.Be5 Qe5 23.bc6+–) 18.Rf2 (18.Qb3!? Rf7 19.Ne6+– (19.Rf2?! Bh6 20.Ne6 Qh4+=)) 18...Nf2+= 19.Kf2 Qh4 20.Kg1 Bh6 (20...Rf7 21.c6 b6 22.a5+–) 21.Bd2 (21.Qb3 Rf7 22.Be1 Qg5+–) 21...Rad8 22.Qe1 (22.Qc2 Qf6+–) 22...Qf6 (22...Qe1 23.Re1 Rd5 24.Rc1=) 23.g3 (23.Qc1 Rf7+=) 23...Bg7 (23...Rd5+=) 24.Nf4 (better 24.Bc3+=) 24...g5?? (better 24...Rd4 25.Bc3 Rd1 26.Rd1 Qc3 27.Qc3 Bc3=) 25.Nfe6+– Qe5 (25...Rd4 26.Nd4 Qh6+–) 26.Nd8 Rd8 27.Qf2 (27.c6 b6+–) 27...h5? Black plans g4 (27...Qc5 28.Ne6 Qe5 29.Nd8 Qa1 30.Kg2 f4 31.gf4 Qa4 32.fg5 Qa2+–) 28.Re1 (28.Rf1 f4 29.Bc3 Qd5 30.gf4 gf4 31.Qf4 Rf8+–) 28...g4 (28...f4 29.gf4 gf4+–) 29.Qf5?? (better 29.c6 bc6 30.Ba5 Rd4 31.ed4+–) 29...Qf5 (29...Qg3!? 30.Kh1 Qh3 31.Kg1 Rd4 32.Qe6 Kh7 33.Qf5 Kh8 34.Qc8 Kh7 35.Qf5 Kg8 36.Qe6 Kh7 37.Qf5=) 30.Nf5= Rd2 31.hg4 hg4 32.Ng7 (32.Rf1 Ra2+=) 32...Kg7= 33.Rf1 Rd3 (33...Ra2 34.Rd1 Kf6 35.Rd7 Ra4 36.Rc7=) 34.Rf4 Re3 35.Rg4 Kf6 36.Kf2 Ra3 (36...Rc3!?=) 37.Re4+– Ra2 38.Kf3 Kf5 (38...Ra3!? 39.Kg2 Rc3+–) 39.g4 (39.Re7 Ra3 40.Ke2 Ra4 41.Rc7 Ra2 42.Kd3 Ra3 43.Kc4 b6+–) 39...Kg5 40.Re5 (40.Re7 Ra3 41.Ke2 Ra2 42.Kd3 Ra3 43.Kd2 Ra4 44.Rc7 Kg4 45.Rb7+–) 40...Kg6? (better 40...Kf6 41.Rf5 Ke6+–) 41.Kf4?? (41.Re7 Ra3 42.Kf2 Ra4 43.Rc7 b6+–) 41...Ra3?? (better 41...Ra4 42.Kf3 Ra3 43.Ke4 Ra4 44.Kd5 Rb4=) 42.Re4+– Ra2 (better 42...Ra1+–) 43.g5 (better 43.c6!? bc6 44.Re6 (44.bc6?! Rc2+–) 44...Kf7 45.Rc6 Ra4 46.Kf5+–) 43...Rf2+– 44.Ke5 (44.Ke3 Rf1+–) 44...Rg2 (44...Kg5 45.Kd5 Rd2 46.Kc4+=) 45.Kd5 (45.Kd4 Ra2 46.Kc3 Ra3 47.Kb4 Rf3+–) 45...Rg5 46.Re5 Re5 47.Ke5 Kf7 48.Kd5 Ke8?? (48...Ke7 49.c6 b6 50.Ke5=) 49.a5 (49.c6 b6 50.Ke6+–) 49...Kd8 (49...Kd7 50.Kc4+=) 50.Ke6 (50.c6 Kc8=) 50...Kc8 (50...a6 51.b6=) 51.Ke7 Kb8?? (better 51...b6 52.cb6 cb6=) 52.Kd7+– b6 (52...a6 53.ba6 c6 54.ab7 Kb7 55.Kd6+–) 53.cb6 (53.ab6 ab6 54.c6 Ka8 55.Kc7 Ka7 56.Kd7 Ka8 57.c7 Kb7 58.c8Q Ka7 59.Qa6 Kb8 60.Qb6 Ka8 61.Qa5 Kb8 62.b6 Kb7 63.Qa7) 53...ab6 (53...cb6 54.ab6 ab6+–) 54.a6 Ka7 55.Kc7 (55.Kc7 Ka8 56.Kb6 Kb8 57.Kc6 Ka7 58.b6 Ka6 59.b7 Ka5 60.b8Q Ka4 61.Qb2 Ka5 62.Qb5) 1–0. BeepBeepImAJeep (2590) – churrosagogo (2015), lichess.org, 2016.

5.a4 Nf5 6.g4 (6.e4 Nd6 7.Qe2 0–0+=) 6...Nd6 (6...Nh4 7.e4=) 7.e3 (7.d3 b6=) 7...e5 (7...a6 8.Nf3=) 8.d4 Qe7 (8...Nf7=) 9.d5 (9.Nc3 Nf7=) 9...b6 (9...Nc4 10.Bc4 Qb4 11.Nd2 Qb2 12.Bb3=) 10.f3 (10.Nc3 a6=) 10...Bb7 (10...f5 11.Qe2=+) 11.e4 (11.Qd2 a6=+) 11...Nf7 (11...Nc4!? 12.Bc4 Qb4 13.Nd2 Qb2–/+) 12.h4 Qb4 13.Bc3 Qc5 14.Qd3 Qe7 (14...a6 15.Ne2=) 15.Ne2 (15.a5 a6=) 15...a5 (15...a6 16.h5=) 16.Nd2 Bh6 17.Nb3 g5 (better 17...d6!?=) 18.h5 (18.Ng3 gh4 19.Nf5 Qd8+–) 18...d6 19.Ng3 Qd7 (19...Bc8 20.0–0–0+–) 20.Nf5 Bf8 21.h6 Qc8 (21...Rg8 22.Ra2+=) 22.Ng7 Bg7 (22...Kd8 23.Nf5+–) 23.hg7 Rg8 24.Rh7 Nd7 25.Rh8?? (better 25.Rc1!?+–) 25...Rh8?? (better 25...Nh8 26.gh8B Rh8–+) 26.gh8Q Nh8 27.0–0–0 Nc5 (27...Ng6 28.Bd2=) 28.Nc5 dc5 29.Bg2 (29.d6!? Qe6 30.dc7+=) 29...Qd7= 30.Rh1 Nf7 (30...Ng6 31.Bd2=) 31.Rh7 0–0–0 32.Qf1 Qd6?? (better 32...Rh8 33.Rh8 Nh8=) 33.Rf7+– Rh8 34.Ba5! ba5 35.Qe1 Kb8? (35...Rh2 36.Qg1 Rh6+=) 36.Qa5+– Rh2 37.Qd2 Qd8 (37...Bc8 38.a5+–) 38.Qf2 Rh8 (38...Qd6 39.a5+–) 39.Qc5 Rh6 (39...Bc8+–) 40.a5 (better 40.Rf8 Qc8 41.Qe7+–) 40...Qe8 (40...Bc8 41.b6 cb6 42.ab6 f5+–) 41.Qc7 Ka8 42.Qb7 1–0. afsharian – rajexp, lichess.org, 2018.

5.a4 Nf7 6.Nc3 c6 7.e3 0–0 8.Nf3 d5 9.Be2 (9.Qb3 dc4 10.Bc4 cb5 11.ab5 Bg4+=) 9...e5 (9...dc4 10.Bc4 cb5 11.ab5+=) 10.d4 (10.bc6 bc6 11.cd5 cd5=) 10...e4 (10...Be6 11.cd5 cd5 12.0–0+=) 11.Nd2 White fights for the Initiative 11...Be6 12.Qb3 Nd7 (12...Qd7 13.bc6 bc6 14.Rb1+=) 13.cd5+– cd5 14.Nce4! de4 A pinning theme. (14...Rc8!?+–) 15.Qe6+– A pinning theme 15...Re8 (15...f5 16.Ba3 Re8 17.Qd5+–) 16.Qb3 (16.Qd5 Nf8 17.Qb7 Re7=) 16...f5 17.Bc4 Rf8 (better 17...Qe7+–) 18.Ba3 Nf6 (18...Qg5 19.g3 Qf6 20.Bf8 Kf8 21.0–0+–) 19.Bf8 Qf8 20.0–0 Rc8 (20...Rd8 21.Rac1+–) 21.Rac1 b6 (21...Rd8+–) 22.Bf7 Qf7 (22...Kh8 23.Be6 Re8 24.Rc6+–) 23.Rc8 Bf8 24.Rfc1 Nd5 25.g3 (25.Rd8 Ne7+–) 25...g5 Black prepares f4 (25...Kg7 26.Rd8 Nf6 27.Qf7 Kf7 28.Rc7 Be7 29.Nc4+–) 26.Nc4 (better 26.g4+–) 26...f4 (26...Ne7 27.Rc7 Kg7+–) 27.Ne5 Qe6 28.R1c6 fe3 (28...Kg7 29.Re6 fg3 30.Qd5 gf2 31.Kf2 g4 32.Qd7 Kg8 33.Qf7 Kh8 34.Rf8) 29.fe3 (29.fe3 Nf4 30.Re6 Ne2 31.Kf2 Kg7 32.Rg6 hg6 33.Qf7 Kh6 34.Qg6; 29.Re6 ef2 30.Kf1 e3 31.Rg6 hg6 32.Qd5 Kh8 33.Rf8 Kg7 34.Qd7 Kf8 35.Qf7) 1–0. BeepBeepImAJeep (2645) – antros (1925), lichess.org, 2015.

5.a4 Nf7 6.e3 0–0 7.Nc3 d6 8.Nf3 e5 9.Be2 Nd7 (9...Re8 10.0–0+=) 10.d4 a6 11.0–0 ab5 12.ab5 Ra1 13.Qa1 f5 14.de5 (14.Rd1 e4 15.Nd2 Qh4+=) 14...de5 15.Nd5 e4?? (15...c6 16.Nb4+=) 16.Nd4 (16.Bg7 ef3 17.Bf8 Qf8 18.Bf3 c6 19.Nf6 Nf6 20.Qf6 Nd6+–) 16...c6?? (better 16...Nde5+–) 17.Ne6+– (17.bc6?! Nde5 18.cb7 Bb7+–) 17...Bb2 (17...cd5 18.Bg7 Qb6 19.Nf8 Nf8 20.cd5 Qd6+–) 18.Qb2 Qh4 (18...Nde5 19.Nd8 Rd8 20.bc6 bc6 21.Ne7 Kf8+–) 19.Qg7 1–0. BeepBeepImAJeep (2630) – tabak (2340), lichess.org, 2017.

5.a4 Nf7 6.e3 0–0 7.Nc3 d6 8.Nf3 e5 9.Be2 Nd7 10.d4 f5 11.de5 (11.0–0 c5+=) 11...Nde5 12.0–0 Be6 13.Ne5 Ne5 14.Nd5 Bd5? (better 14...Re8=) 15.Qd5+– (15.cd5?! Nf3 16.Bf3 Bb2+=) 15...Kh8 16.Qb7 Ng4 (better 16...f4+–) 17.Bg7 Kg7 18.Bg4 (18.Bf3 a5+–) 18...fg4 19.Rad1 h5 (19...Qe7 20.Rd4+–) 20.c5 Qe7? (20...Qc8 21.Qc6 Rd8+–) 21.cd6 Qf7 22.dc7 Rfc8 (22...Rac8 23.Rc1 Ra8 24.f3+–) 23.Rc1 (better 23.Qc6 Kh6 24.Rd7+–) 23...a5 (23...g5 24.Rfd1 Qf5 25.Rd5+–) 24.ba6 (24.b6 Qe6+–) 24...Qd7 (24...h4+–) 25.Rfd1 Qa4 (25...Qf7 26.Qa8! Ra8 27.Rd8 Ra6 28.c8Q+–) 26.Rd8! Qa6 (26...Rd8 27.cd8Q Theme: Double Attack) 27.Qa6 (27.Qb2 Kf7 28.Rd7 Ke6 29.Qg7 Qc6 30.Re7 Kd6 31.Qe5) 27...Ra6 28.Rc8 Kf7 29.Rf8! Kf8 Decoy theme: f8 (29...Kg7 30.c8Q Ra8 31.Rg8 Kh6 32.Rh8 Kg7 33.Qc3 Kf7 34.Rh7 Ke6 35.Qc6 Ke5 36.Rc5) 30.c8Q Theme: Double Attack 30...Kf7 (30...Kg7 31.Rc7 Kf6 32.Qf8 Ke5 33.Qc5 Ke4 34.Qd4 Kf5 35.Qd5 Kf6 36.Rf7) 31.Qb7 (31.Rc7 Kf6 32.Qf8 Ke5 33.Qc5 Ke4 34.Qd4 Kf5 35.Qd5 Kf6 36.Rf7) 31...Kf6 32.Qa6 Kf5 (32...Kg7 33.Qd6 Kh6 34.Qf8 Kg5 35.g3 h4 36.Rc5) 1–0. BeepBeepImAJeep (2675) – grasshopper (1825), lichess.org, 2016.

4.e4 d6

5.a4 e5 6.Bc4 Ne7 7.Nf3 Bd7 (7...c6 8.bc6 Nbc6 9.Nc3+=) 8.0–0 c6 9.d4 cb5 (better is 9...Bg4!?+/–) 10.ab5+– (< 10.Bb5 Nbc6+=) 10...f5 11.de5 fe4 12.ed6 Bb2 13.de7 Qe7 14.Ra2 Qb4 (14...ef3 15.Rb2 Qf6 16.Qd5 Qb2 17.Qb7+–) 15.Qd5 ef3 16.Qf7 (16.Rb2 Qb2 17.Qb7+–) 16...Kd8–/+ 17.Qf6?? (17.c3 Bc3 18.Ra4=+) 17...Bf6–+ 18.Bd5 fg2 19.Bg2 Qb5 20.Nd2 Qg5 (better is 20...Bc6 21.Ra3–+) 21.Kh1 Bc6 (better is 21...Qd2 22.Ra3 Kc8 23.Kg1–+) 22.Nf3 Bf3 23.Bf3 Qb5 (better is 23...Qf4!? 24.Kg2 Be5 25.Rd1 Kc7 26.Ra3–+) 24.Rg1 Nd7 25.c4 Qb3 26.Rd2 Rc8 27.Bb7 Qb7 28.Rg2 Rc4 29.Kg1 Re8 30.h3 Qc7 31.f3 Re1 32.Kf2 Bc3 33.Ke1 Qe5 34.Kd1 Bd2 35.Rd2 Qg3 36.Ke2 Qh3 37.Kd3 Qh4 38.Ke3 Qf4 39.Ke2 Ke7 40.Rd3 Rc2 41.Kd1 Rf2 42.Ra3 Qh2 43.Ke1 (43.Re3 Kf6 44.Re2 Re2 45.f4 Ra2 46.Kc1 Qc2) 0–1. MasterofDisaster – lovo, Live Game Caissa's Web, 2004.

5.a4 e6 6.Nf3=.

5.Nf3 e5 +=.

3.b5 Nh6

4.a4 Nf7 5.c4 c5 6.e3 e5 7.Nf3 d6 (7...d5 8.cd5 Qd5 9.Be2=) 8.d3 Bg7 9.Be2 0–0 10.0–0 Be6 11.Nfd2 Nd7 (11...Qd7 12.Nc3=) 12.Nc3 a5 13.Bf3 Qc7 (13...Rb8 14.Bd5 Bd5 15.Nd5+=) 14.Nd5 (14.Bd5 Rae8+=) 14...Qd8+= 15.Ne4 (15.Rb1 Nb6+=) 15...Nb6 (15...Bd5!? 16.cd5 f5=) 16.Nb6 Qb6 17.Nc3 f5 18.Bd5 Bd7 (18...Rae8 19.Be6 Re6 20.Nd5+–) 19.Qf3 (19.f4 Rae8+–) 19...Rab8 20.Rad1 Kh8 21.Bf7 (21.Qg3 Rbe8+–) 21...Rf7+= 22.Nd5 Qd8 23.e4 (23.d4 Qh4+=) 23...Qf8 (23...Be6 24.Qg3=) 24.Qe2 fe4 (24...Be6 25.Rde1+=) 25.de4+– Be6 26.f3 Bd5 (26...b6 27.Ne3+=) 27.Rd5 (27.ed5?! b6+=) 27...Bf6 28.Rfd1 (28.Qd2 Be7+–) 28...Be7 29.Qd3 (29.Bc1 b6+–) 29...Kg8 30.b6 Rc8 31.Bc3 Ra8 32.Qd2 (32.Rb1 Ra6+–) 32...Qe8+= 33.Ra1 (worse 33.Ba5 Qa4 34.Bc3 Qc4=+) 33...Qc6 34.Ba5 Ra6 35.Bc3 Ra4 36.Rb1 (better 36.Ra4!? Qa4 37.Rd6 Qc4 38.Qd3+=) 36...Rc4=+ 37.Qd3 (37.Qb2 Ra4=+) 37...Ra4–/+ 38.Be1 Rf8 (38...Ra6 39.Qb3–/+) 39.Bf2 Rfa8 40.Qb3 (better 40.Qd1–/+) 40...Ra1?? (40...Rb4!? 41.Qc2 Rb6–+) 41.Rdd1 (better 41.Rc5! d5 42.Rc6 bc6+–) 41...Kg7?? (better 41...c4 42.Qc3 R1a3–/+) 42.Ra1+– Ra1 43.Ra1 Qd7 (43...h6 44.Qe6 Qe8 45.Ra7+–) 44.Qd5 Bg5 (44...h6 45.Bg3 Qb5 46.Qb7+–) 45.Ra7 Be7 (45...Kh6+–) 46.Rb7 Qd8 47.Qe6 Kh6 (47...Qf8 48.Re7 Kh8 49.b7 c4 50.Qf6 Kg8 51.b8Q Qb8 52.Qg7) 48.Qe7 (48.Re7 Qe7 49.Qe7 g5 50.Qf6 Kh5 51.g4) 48...Qa8 (48...Qe7 49.Re7 g5 50.b7 g4 51.b8Q g3 52.Qd6 Kg5 53.Re5 Kf4 54.Rc5) 49.Qh4 1–0. BeepBeepImAJeep (2650) – Batil (2320), lichess.org, 2016.

4.a4 Nf7 5.c4 Bg7 6.e3 0–0 7.Nc3 e5 8.Nf3 d6 (8...f5 9.d4=) 9.Be2 f5 (9...Be6 10.d4=) 10.d4+= Nd7 11.0–0 g5 12.Rc1 (12.de5 de5 13.a5 a6+=) 12...g4 13.Nd2 (13.Ne1!?+=) 13...ed4=+ 14.ed4 Bd4 15.Nb3 Bg7 16.Nd4 Nc5 17.a5 (17.Nd5 Ne5=+) 17...h5 (better 17...Bd4!? 18.Qd4 Nb3–/+) 18.a6 (18.Nd5 Ne5=) 18...ba6 19.Nc6 Qh4 20.Qc2 (better 20.g3 Qg5 21.f4 gf3 22.Bf3=+) 20...f4 (better 20...ab5!? 21.cb5 Bb7–/+) 21.g3 (better 21.Nd5 Bb2 22.Qb2+–) 21...Qh3?? (better 21...Qg5!? 22.gf4 Qf6+= (22...Qf4?? 23.Ne7 Kh8 24.Ng6 Kg8 25.Nf4+–)) 22.Nd5 (better 22.Ne7 Kh8 23.Ng6 Kg8 24.Nf4 (24.Nf8?? f3 25.Qh7 Kf8 26.Qg7 Kg7 27.Nd5 Kf8–+) 24...Qf1 25.Rf1+–) 22...f3?? (better 22...Ne5 23.Be5 de5 24.Nce7 Kh8 25.Ng6 Kg8+–) 23.Nde7 (23.Nf6 Bf6 24.Qg6 Kh8 25.Bf6) 23...Kh8 24.Ng6 Kg8 (24...Kh7 25.Nf8 Kg8 26.Qh7 Kf8 27.Qg7 Ke8 28.Qg8 Kd7 29.Qf7) 25.Nce7 Kh7 26.Nf8 (26.Nf8 Kh8 27.Qh7) 1–0. BeepBeepImAJeep (2695) – Batil (2475), lichess.org, 2020.

4.a4 Bg7 5.c4 b6 6.e3 Bb7 7.Nf3 Nf7 8.Be2 d6 9.0–0 Nd7 10.d4 0–0 11.Nc3 a6 12.d5 ab5 (12...Nc5 13.Nd4+=) 13.ab5 e6?? (better 13...Ra1 14.Ba1 Nc5+=) 14.de6 Nfe5 15.ed7 Qd7 16.Ra8 Ra8 17.Nd4 (better 17.Nd5 Qf7+–) 17...c5 (17...Qf7 18.Qb3+–) 18.bc6 Nc6 19.Nc6 Bc6 20.Bf3 f5 (20...Kh8 21.Nd5 Qb7 22.Qd4+–) 21.Bd5 (21.Bc6 Qc6 22.Nd5 Ra7 23.Bg7 Rg7+–) 21...Kh8 (21...Kf8 22.Qb3+–) 22.Qf3 (22.Qb3 Ra6+–) 22...Bd5 (22...Rc8 23.Rb1+–) 23.Qd5 (23.Nd5 Qc6 24.Bg7 Kg7+–) 23...Rc8 24.Rd1 (24.Na4 Bb2 25.Nb2 Qc6+–) 24...b5 (24...Qc6 25.Qd2 Qc4+–) 25.c5 (better 25.Qb5 Qb5 26.cb5+– (26.Nb5?! Bb2 27.Nd6 Rc6+–)) 25...b4 26.c6 (26.Ne4 fe4 27.Bg7 Kg7 28.cd6 Rb8+–) 26...Qc6 27.Qc6 Rc6 28.Na4 Ra6 29.Bg7 Kg7 30.Nb2 Ra2 (30...Rc6+–) 31.Rb1 d5 (31...Ra3 32.Nc4 Ra8 33.Kf1+–) 32.Kf1 (32.Nd3 d4+–) 32...b3 (32...Ra3 33.Nd1 b3 34.Ke1+–) 33.Ke2 (33.Nd3 Ra3+–) 33...Kf6 (33...f4 34.Kd3 fe3 35.Ke3+–) 34.Kd3 Ke5 (34...Ra3 35.Kc3+–) 35.f4 (35.Kc3 Kd6+–) 35...Kd6 36.Kc3 Kc5 (36...Ra7 37.Nd3+–) 37.Nd3 Kd6 38.Rb2 (38.Rb3?! Rg2 39.h3 Rh2+–; 38.Kb3?! Re2+–) 38...Ra1 (38...Ra4 39.Rb3 Rc4 40.Kd2+–) 39.Rb3 Rg1 (39...Ra2 40.Rb7+–) 40.Rb6 Kc7 41.Rb2 Kc6 (41...Rh1 42.Kd4+–) 42.Kd4 Rd1 43.Rc2 Kd6 (43...Kb7 44.h3+–) 44.h4 (44.Ra2 Ke6+–) 44...h6 (44...Ra1 45.Rb2+–) 45.Ra2 Rh1 (45...Ke7 46.Ra6 Kf7 47.Kc3+–) 46.Ra6 Ke7 47.Rg6 Rh4 48.Kd5 h5 (48...Rh2 49.Ke5 Kf7 50.Rf6 Ke7 51.Kf5 Rg2 52.Rh6+–) 49.Ne5 Rh2 50.Rg7 Kf8 51.Rf7 Kg8 52.Rf5 Rg2 53.Rh5 Kf8 (53...Re2 54.f5 Rd2 55.Ke6+–) 54.e4 (54.f5 Rg7 55.f6 Rg6 56.Ke6 Kg8 57.Nf7 Kf8 58.Rd5 Rf6 59.Kf6 Kg8 60.Rd8 Kh7 61.Rh8) 54...Rd2 (54...Ra2 55.f5 Ra5 56.Kd6 Ra6 57.Nc6+–) 55.Ke6 Kg7 (55...Ra2 56.Nd7 Kg7+–) 56.f5 Rd8 (56...Rb2 57.f6 Kg8 58.f7 Kg7 59.Rg5 Kh6 60.f8Q Kg5 61.Qf5 Kh4 62.Qg4) 57.f6 Kg8 58.Rg5 Kh7 59.Rg7 Kh8 (59...Kh6 60.Kf5 Rh8 61.Rg4 Kh5 62.Nf3 Kh6 63.Rh4) 60.Ng6 (60.Nf7) 1–0. BeepBeepImAJeep – aguilanegra (1825), lichess.org, 2018.

4.Nc3+–.

4.e3 Nf7 5.c4 e6 6.Nc3 Bg7 7.Nf3 0–0 8.Bd3 c6 9.a4 d5 10.0–0 e5 (10...Ne5 11.Ne5 fe5 12.Ba3+=) 11.bc6+– e4? (better 11...bc6 12.cd5 cd5+=) 12.c7+– Qc7 13.Nd5 Qd8 14.Be4 The passed pawn on d2 will quickly become a dangerous weapon 14...Bg4 15.h3 Bf3 (15...Nd6 16.hg4 Ne4 17.d3+–) 16.Bf3 (16.gf3?! Ng5+–) 16...Ne5 17.Be2 Nbc6 18.d4 Nf7 19.Nf4 Re8 20.d5 Nce5 21.c5 Qa5 (21...Qe7 22.Ne6+–) 22.Rc1 Rac8 (22...Ng5 23.Qb3 Kh8 24.Rfd1+–) 23.Bb5 Red8 24.Bc3 Qc7 25.Ne6 Qe7 (25...Qb8 26.Nd8 Rd8 27.Qb3+–) 26.Qb3 a6 (26...Nd7 27.d6 Qe8 28.Nd8 Qd8 29.Bc4+–) 27.d6 Qe6 (27...Nd6 28.Nd8 Ndf7 29.Nf7 Qf7 30.Qf7 Kf7 31.Be2 Rc5 32.Be5 Re5 33.Rc7 Re7 34.Bc4 Ke8 35.Re7 Ke7 36.a5+–) 28.Qe6 ab5 29.Be5 fe5 30.d7 (30.ab5 Ra8+–) 30...Rc6 (30...Rc7 31.Rcd1 ba4 32.f4+–) 31.Qe8! Bf8 (31...Re8 32.de8Q) 32.ab5 Rc7 33.c6 Kg7 (33...bc6 34.bc6 Kg7 35.f4+–) 34.f4 (better 34.b6 Rc6 35.Rc6 bc6+–) 34...ef4 (34...bc6 35.bc6 e4+–) 35.Rf4 Nd6 36.Qd8 (36.Qd8 Nf5 37.Rf5 Bb4 38.Qf6 Kh6 39.Rc4 Rc6 40.Rh4) 1–0. onur604 (2320) – Obryv_R_75 (2125), lichess.org, 2020.

4.e4 Ng4?? (better 4...a6 5.Nc3 ab5 6.Bb5 c6+=) 5.Qg4+– a5 (5...a6 6.Nc3+–) 6.a4 (6.Nc3 d5 7.Qg3 de4 8.Ne4 Bf5+–) 6...g5 (6...d5 7.Qh4 c6+–) 7.Qh5 1–0. Taulien,Hans_Juergen (2350) – Olsfelder,Nils (1775), remoteschach.de, 2002.

4.h3 Bg7 5.c4 e6 6.e4 0–0 7.Qb3 c6 (7...a6 8.Nf3=) 8.a4 (8.Nf3 cb5 9.cb5 d5+=) 8...cb5 (8...d5 9.cd5 ed5 10.Nc3=) 9.ab5 f5 (9...a5 10.Nf3+=) 10.Bg7+– Kg7 11.Qb2 Qf6 (11...Kg8 12.e5+=) 12.Qf6 (12.e5 Qd8+–) 12...Rf6 (12...Kf6 13.Nc3+=) 13.d3 (13.e5 Rf8+–) 13...b6 (13...fe4 14.de4 d6 15.Nc3+=) 14.Ne2 (14.e5 Rf8+–) 14...Bb7 (14...fe4 15.de4 Nf7 16.Nec3+=) 15.Nec3 (15.e5 Rf8+–) 15...a6 (15...e5 16.Nd2=) 16.Be2 (16.e5 Rf8+–) 16...ab5= 17.Ra8 (17.Nb5?? Ra1 18.0–0 e5–+) 17...Ba8 18.Nb5 fe4 19.0–0 (19.Nc7!? ed3 20.Bf1=) 19...ed3=+ 20.Bd3 d5 21.cd5 Bd5 22.Nc7 Nf5 (22...Rf7 23.Rc1 Re7–/+) 23.Nd5?? (better 23.Ne8 Kf7 24.Nf6 Kf6 25.Rd1+–) 23...ed5–/+ 24.Bf5 Rf5 (worse 24...gf5 25.Nc3=+) 25.Rd1 Nc6 26.g4 Re5 27.Nc3 (27.Na3 h5–/+) 27...d4–+ 28.Nb1 (28.f4 Re3 (28...dc3?! 29.fe5 c2 30.Rc1=+) 29.Nb5 d3–+) 28...h5 29.f3 Re3 (29...b5 30.Kf2–+) 30.Kf2 hg4 31.hg4 Kf6 32.Nd2 (32.Rd4 Rf3!? (32...Nd4?! 33.Ke3 Ne6 34.Nd2=) 33.Kf3 Nd4 34.Ke4 Nc6–+) 32...b5 33.Rc1 Ne5 34.Rb1 Nd3 (34...b4!?–+) 35.Kg3–/+ b4 36.Nc4 (36.Rb3 g5–/+) 36...Re8 (36...Re1 37.Re1 Ne1 38.Kf4–+) 37.Rb3 Rc8 38.Nd6? (better 38.Rd3 Rc4 39.Kf4–+) 38...Rd8?? (better 38...Rc3 39.Ne4 Ke6–+) 39.Ne4+– Ke5 40.Rd3 Rb8 41.Nd2 g5 42.Nb3 Rd8 43.Na5 (better 43.Rd2!? Rd6+–) 43...Kd5 44.Nb3 (better 44.Rd1+–) 44...Kc4= 45.Nc1 Rb8 Black prepares the advance b3 46.f4 (46.Rb3 Rd8 47.f4 d3 48.Rd3 gf4 49.Kf4 Rd3 50.Nd3 Kd3=) 46...gf4 47.Kf4?? (47.Kf2 b3 48.Rb3 Rb3 49.Nb3 Kb3=) 47...b3?? (better 47...Rf8 48.Ke4 Re8 49.Kf4 Re1–+) 48.Ke4?? (better 48.Rb3 Rb3 49.Nb3 Kb3 50.g5=) 48...Re8–+ 49.Kf4 b2 (49...b2 50.Rd4 Kd4 51.Nb3 Kc3–+) 0–1. lindsey000 – andy1000, gameknot.com, 2017.

3.c3 e6

4.e3 Ne7 5.Nf3 Bg7 6.Be2 0–0 7.d4 h6 (7...d5 8.0–0+=) 8.Bd3 Kh7 9.Nbd2 Rf7 (9...d5 10.c4+=) 10.0–0 Qh8 11.a3 d6 12.h3 c6 13.Re1 b6 14.Qc2 a6 15.Rac1 Ra7 16.e4 Bb7 17.d5 (17.Qb3!? Bc8 18.c4+/–) 17...cd5+= 18.ed5 ed5 19.c4 (19.Re6 f5=) 19...dc4= 20.Nc4 (better is 20.Qc4 Qf8 21.Qh4=) 20...d5?? (20...Bf3 21.gf3 Rc7 22.Re7 Rfe7 23.Bg6 Kg8 24.Qf5+/–) 21.Ncd2 Rf8?? 22.Qb1 Re8? 23.Nf1?? Nec6?? 24.Re8 Qe8= 25.b5 ab5+= 26.Bb5 Qh8 27.a4 Na5?? 28.Bd3?? f5?? 29.Bg7 Qg7+= 30.Bb5 d4 31.Rd1 Bf3–/+ 32.gf3 Rc7 33.Ng3 Nc4 34.Bc4 Rc4 35.Rc1? Rc1–+ 36.Qc1 Qa7 37.Qd1 d3! 38.Nf1 b5 39.ab5+= Qd7 40.Qd2? Qg7?? 41.Ne3?? Nd7?? 42.Nd1?? Ne5 43.Nc3?? Nc4 44.Ne4?? Nd2–+ 45.Nd2 Qa1 46.Kg2 Qb2 47.Ne4 fe4 48.fe4 d2 (48...d2 49.h4 d1Q 50.Kg3 Qc3 51.Kh2 Qcf3 52.b6 Qdh1) 0–1. Fournier,Frederic – trufante, Active Blind, 2008.

4.e3 Kf7 5.Nf3 Kg7 6.d4 Ne7 7.Bd3 d6 8.Nbd2 Bd7 9.0–0 Nbc6 (9...d5 10.Nb3+=) 10.a3 a5 11.h3 ab4 12.ab4 Ra1 13.Qa1 Nb4? (better is 13...d5+/–) 14.cb4+– Bc6 (14...Nd5 15.Qa3+–) 15.Rc1 d5 (15...Nd5 16.b5 Bd7 17.Qa7+–) 16.b5 Bd7 17.Qb1 Nf5 18.e4 de4 19.Ne4 Bb5 20.Bb5 Nd4 21.Bd4 c6 22.Bd3 e5 23.Bb6 Qb6 24.Qb6 Kh6 25.Qb1 Bc5 26.Nc5 Rd8 27.Ne4 Rd3 28.Qd3 g5 29.Rd1 f5 30.Ng3 f4 31.Nf5 Kg6 32.Nd6 (32.Nd6 Kg7 33.Ne8 Kf8 34.Qf5 Ke8 35.Rd7 b5 36.Qf7; 32.Qd7 b5 33.Qe6 Kh5 34.Qe8) 1–0. Fournier,Frederic (1970) – pizza9091 (1880), Active, 2009.

3.c3 Bg7

4.c4 a5 5.b5 b6 6.e3 d5 (6...e5 7.d4+=) 7.Nf3 dc4 8.Bc4 e6 9.Qb3 Qe7 (9...a4 10.Qc2+/–) 10.Ba3 Qf7 (10...a4 11.Qc2 Qf7 12.Nc3+/–) 11.Nd4 (better is 11.Nc3+–) 11...Ne7? (better is 11...a4 12.Qd1 f5+/–) 12.Ne6+– Be6 13.Be6 Qf8 14.Nc3 Nd7 (14...a4 15.Qc4 f5+–) 15.Nd5 Nc5 (15...Ra7 16.Be7 Qe7 17.Ne7 Nc5+–) 16.Bc5 bc5 17.Nc7 (17.Nc7 Kd8 18.Qd3 Kc7 19.b6 Kb6 20.Rb1 Ka7 21.Qd7 Ka6 22.Qb7#) 1–0. orangutanb4 (1895) – mitica2011 (1765), playok.com, 2011.

4.c4 d5 5.cd5 Qd5 6.Nc3 Qc4 7.b5 f5 8.Nf3 Bc3 (8...e5!?+=) 9.Bc3+– (9.dc3?! Qb5 10.Rb1 Qa5=) 9...Qb5?? (better 9...Nf6 10.e3 Qd5+–) 10.Bh8 Qb3 (10...Nf6+–) 11.ab3 (better 11.Qb3!? e6+–) 11...Nf6 12.Qc1 1–0. Maestro – Smiuk, internet, 2020.

4.e3 Nh6 (4...e5 5.d4=) 5.Nf3 e6 (5...e5 6.d4=) 6.d4+= d6 7.Bd3 0–0 8.a3 Rf7 9.0–0 Bd7 10.Qc2 Be8 11.Nbd2 Re7 12.Rfe1 Bf7 13.e4 c6 14.e5 de5 15.de5 fe5 16.Ne4 (worse is 16.Ne5 Be5 17.Re5 Rd7=) 16...Re8 (16...Nf5 17.Bc1 h6 18.Bb2+/–) 17.Rad1 (17.Bc1 Rf8+/–) 17...Rf8 18.c4 Nd7 (18...Qc7 19.Neg5 Nd7 20.Qe2+/–) 19.Ned2 Nf6 20.Ne5+– Nd7 21.Nf7 Rf7 22.Nf3 Bb2 23.Qb2 Qe7 24.Bg6?? Re8?? 25.Bf7+– Qf7 26.Rd2 e5 27.Ne5 Ne5 28.Re5 Re5 29.Qe5 Qg7 30.Qg7 Kg7 31.g3 Nf7 32.Kg2 Nd6 33.Rd6 b6 34.Rd2 c5 35.bc5 bc5 36.Rd5 a5 37.f4 a4 38.Rc5 h5 39.Rh5 Kg6 40.Ra5 Kf6 41.Kf3 Ke6 42.g4 Kd6 43.h4 Kc6 44.Ke4 Kb6 45.h5 Ka5 46.Kd3 Ka6 47.Kc2 Kb6 48.Kb2 Kc7 49.h6 Kd7 50.g5 Ke7 51.f5 (51.f5 Kd6 52.h7 Kc5 53.h8Q Kc4 54.f6 Kb5 55.f7 Kc5 56.f8Q Kd5 57.Qa8 Kc4 58.Qc3 Kb5 59.Qac6) 1–0. Fournier,Frederic (1905) – mevaleerga (1685), Active blind, 2011.

4.Nf3 d5=.

3.c4 b6

4.Qa4 Bb7 A) 5.Nc3 Nh6 (5...e6 6.b5 a6 7.Qc2 ab5 8.cb5 Ba3 9.Ba3 Ra3; 5...Bg7 6.Nf3 Nh6 7.b5 a6 8.Qb3 e6 9.e3 Nf5) 6.Nf3 e6 7.d4 Qe7 8.a3 a5 9.b5 Bg7; B) 5.e3 Nc6 (5...Nh6 6.Nf3 e6 7.Be2 Nc6 8.b5 Na5 9.Nc3 Bd6; 5...Bg7 6.Nf3 Nh6 7.Nc3 Nc6 8.Be2 0–0 9.0–0 e6) 6.Nf3 e5 7.b5 e4 8.bc6 Bc6 9.Qd1 ef3; C) 5.d3 Bg7 (5...Nh6 6.Nf3 Bg7 7.b5 Nf5 8.Qb3 a6 9.Nbd2 Nd6; 5...Na6 6.Nf3 e5 7.a3 Nh6 8.Nc3 c5 9.Ne4 Be7) 6.Nf3 Nh6 7.Nbd2 Nc6 8.g3 0–0 9.Bg2 a5; D) 5.Nf3 Bg7 (5...e6 6.b5 Nh6 7.Nc3 a6 8.Qc2 ab5 9.cb5 Ba3; 5...Nh6 6.Nc3 e6 7.d4 Qe7 8.c5 Bg7 9.Ba3 0–0) 6.Nc3 Nh6 7.b5 a6 8.Qb3 e6 9.e3 ab5.

4.Qa4 e5 A) 5.Nc3 Na6 (5...Ne7 6.Nf3 Bg7 7.e3 Nbc6 8.b5 Na5 9.h4 a6; 5...Bb7 6.Nf3 Ne7 7.e3 Nbc6 8.b5 Na5 9.Bd3 Bg7) 6.a3 c5 7.Nd5 Bb7 8.f4 cb4 9.ab4 ef4; B) 5.b5 Bc5 (5...Bb7 6.Nc3 a6 7.Qb3 d6 8.Nf3 Nd7 9.e3 Nc5; 5...a6 6.Nf3 Bb7 7.Qc2 Ne7 8.Nc3 Bh6 9.h4 ab5) 6.Nf3 Ne7 7.Nc3 Bb7 8.e4 a6 9.Qb3 0–0; C) 5.e3 Bb7 (5...Ne7 6.Nc3 Bg7 7.Bd3 f5 8.Nh3 Nbc6 9.0–0 0–0; 5...Bg7 6.Nf3 Ne7 7.Bd3 0–0 8.Nc3 Nbc6 9.0–0 f5) 6.Nc3 Na6 7.Ba3 c5 8.b5 Nb4 9.Bb4 cb4; D) 5.Nf3 Bb7 (5...Ne7 6.Nc3 Bg7 7.e3 Nbc6 8.b5 Na5 9.h4 a6; 5...Na6 6.a3 c5 7.b5 Nc7 8.Nc3 Bb7 9.Qc2 Ne7) 6.Nc3 Ne7 7.e3 Kf7 8.Bd3 d5 9.cd5 a5.

4.Qa4 e6 A) 5.Nh3 Bb7 (5...Nc6 6.b5 Na5 7.Nc3 Bb7 8.e3 Nh6 9.Nf4 Bd6; 5...Nh6 6.Nf4 Nc6 7.Ne6 de6 8.Qc6 Bd7 9.Qf3 Bg7) 6.Nc3 Nh6 7.Nf4 Nc6 8.Ne4 Be7 9.g3 0–0; B) 5.Nc3 Bb7 (5...Nh6 6.Nf3 Bb7 7.d4 Nc6 8.b5 Na5 9.e4 a6) 6.h3 Nh6 7.Nf3 Nc6 8.Ne4 Be7 9.b5 Na5; C) 5.d3 Na6 (5...Nh6 6.Nf3 Na6 7.Bc3 Bb7 8.Nbd2 Bg7 9.h4 Ng4; 5...Bb7 6.Nd2 a6 7.Ngf3 Nc6 8.Bc3 Nh6 9.g3 Nf5) 6.Bc3 Qe7 7.a3 Nh6 8.Nf3 Bg7 9.g3 Bb7; D) 5.Nf3 Bb7 (5...Nh6 6.Ng5 Nc6 7.Ne6 de6 8.Qc6 Bd7 9.Qf3 Be7) 6.Nc3 Nc6 7.b5 Ne5 8.d4 Nf3 9.gf3 Nh6.

4.Qa4 Bg7 A) 5.Nc3 Nh6 (5...Bb7 6.Nf3 Nc6 7.e3 Nh6 8.Be2 Ne5 9.Nd5 c6; 5...f5 6.Nf3 Nf6 7.g3 Bb7 8.Bg2 Nc6 9.0–0 0–0) 6.e3 Bb7 7.Nf3 Nc6 8.Be2 0–0 9.0–0 e6; B) 5.e3 Nh6 (5...Bb7 6.Nf3 Nh6 7.Be2 0–0 8.0–0 Nc6 9.d4 e5; 5...Nc6 6.Nf3 Nh6 7.Be2 0–0 8.0–0 Bb7 9.d4 e5) 6.Nf3 Nc6 7.Be2 0–0 8.0–0 Bb7 9.d4 e5; C) 5.b5 Bb7 (5...a6 6.Nf3 Bb7 7.Qb3 ab5 8.cb5 d5 9.Nc3 Qd6; 5...Nh6 6.Nf3 Bb7 7.Nc3 a6 8.Qb3 ab5 9.cb5 d5) 6.Nf3 a6 7.Qb3 e6 8.Nc3 ab5 9.cb5 Nh6; D) 5.Nf3 Nc6 (5...Nh6 6.b5 Bb7 7.Nc3 c5 8.e3 a6 9.Bd3 0–0; 5...Bb7 6.Nc3 Nc6 7.e4 Nh6 8.Be2 f5 9.Qb3 0–0) 6.b5 Ne5 7.Nd4 Bb7 8.f4 c5 9.bc6 Nc6.

4.Qa4 Nh6 A) 5.Nc3 Bg7 (5...Bb7 6.Nf3 Nc6 7.e3 e6 8.b5 Ne5 9.Be2 Bd6; 5...e6 6.Nf3 Bb7 7.d4 Nc6 8.b5 Na5 9.e4 a6) 6.e3 0–0 7.b5 d6 8.Nf3 Nd7 9.d4 e5; B) 5.f4 Na6 (5...e6 6.Nc3 Bb7 7.Nf3 Bd6 8.e3 0–0 9.Bd3 Nc6; 5...Bb7 6.Nf3 Bg7 7.Nc3 0–0 8.e3 e5 9.Be2 ef4) 6.Nf3 c5 7.b5 Nc7 8.Nc3 Bb7 9.e3 Nf5; C) 5.e3 Bb7 (5...e6 6.Nf3 Bb7 7.Nc3 Nc6 8.c5 Be7 9.b5 Na5; 5...Nf5 6.Nf3 Bb7 7.Bd3 c5 8.b5 a6 9.Qc2 ab5) 6.Nf3 e6 7.Nc3 Nc6 8.c5 Ne5 9.Nd4 Kf7; D) 5.Nf3 Bb7 (5...e6 6.Ng5 Nc6 7.Ne6 de6 8.Qc6 Bd7 9.Qf3 Be7; 5...Bg7 6.Nc3 Nc6 7.b5 Ne5 8.Nd4 Bb7 9.f4 c5) 6.Nc3 e6 7.e4 Nc6 8.b5 Ne5 9.Be2 Nf3.

4.b5 a6 A) 5.Nc3 Bb7 (5...e6 6.Nf3 Bb7 7.e4 Bb4 8.Qc2 Ne7 9.Be2 ab5; 5...ab5 6.cb5 e6 7.Nf3 Bb7 8.e4 Bb4 9.Bc4 Ne7) 6.Nf3 e6 7.e4 Bb4 8.Bd3 ab5 9.cb5 Ne7; B) 5.e3 Nh6 (5...ab5 6.cb5 c5 7.Be2 d5 8.Nc3 d4 9.Ne4 f5; 5...Bg7 6.Nc3 f5 7.Nf3 Bb7 8.Be2 Nf6 9.Qb3 ab5) 6.Nf3 ab5 7.cb5 c5 8.Nc3 d5 9.Bd3 Qd6; C) 5.h3 Nh6 (5...Bg7 6.Nf3 Bb7 7.Nc3 Nh6 8.Qb3 e6 9.e4 0–0; 5...Bb7 6.Nf3 Nh6 7.Nc3 Bg7 8.Qb3 e6 9.e4 0–0) 6.Nf3 Bg7 7.e4 0–0 8.Nc3 Bb7 9.Bd3 Nf7; D) 5.Nf3 Bb7 (5...ab5 6.cb5 Bb7 7.Nc3 e6 8.e4 Bb4 9.Bc4 Ne7; 5...Bg7 6.Nc3 Bb7 7.e4 ab5 8.cb5 e6 9.d4 Ne7) 6.Nc3 ab5 7.cb5 e6 8.e4 Bb4 9.Bc4 Ne7.

4.b5 e6 A) 5.Nf3 a6 (5...Bb7 6.Nc3 a6 7.e4 Bb4 8.Bd3 ab5 9.cb5 Ne7; 5...Nh6 6.Nc3 Bb7 7.e4 a6 8.Be2 ab5 9.cb5 Bd6) 6.e4 Bb7 7.Bd3 Bg7 8.Nc3 ab5 9.cb5 Ne7; B) 5.Nc3 a6 (5...Bb7 6.Qc2 Nh6 7.Nf3 Bb4 8.a3 Ba5 9.h4 Qe7; 5...Nh6 6.e3 Bb7 7.Nf3 a6 8.h4 Bg7 9.Bd3 ab5) 6.Nf3 Bb7 7.e4 Nh6 8.Be2 ab5 9.cb5 Bd6; C) 5.e4 Nh6 (5...Bb7 6.Nf3 Be4 7.Nc3 Bf5 8.Nd4 Nh6 9.Be2 e5; 5...Bg7 6.Nf3 Ne7 7.Nc3 a6 8.Bd3 ab5 9.cb5 c5) 6.Nf3 Bb7 7.Nc3 a6 8.Be2 ab5 9.cb5 Bg7; D) 5.e3 Bb7 (5...a6 6.Qf3 Ra7 7.Nc3 Bg7 8.Bd3 f5 9.Qh3 ab5; 5...Be7 6.Nc3 Bb7 7.Nf3 f5 8.Be2 Nf6 9.0–0 0–0) 6.Nf3 a6 7.Bd3 ab5 8.cb5 Nh6 9.Qc2 Bg7.

4.b5 Bg7 A) 5.Qb3 Nh6 (5...Bb7 6.Nf3 Nh6 7.Nc3 Ng4 8.e4 0–0 9.h3 Ne5; 5...a6 6.Nc3 f5 7.Nf3 Nf6 8.g3 Bb7 9.Bg2 0–0) 6.Nf3 d6 7.Nc3 Bg4 8.h3 Bf3 9.ef3 Nd7; B) 5.Nc3 a6 (5...Nh6 6.Nf3 Bb7 7.Qb3 e6 8.e3 a6 9.h4 Ng4; 5...f5 6.Nf3 Nf6 7.g3 Ne4 8.Bg2 0–0 9.Qc2 Bb7) 6.Nf3 Bb7 7.Qb3 ab5 8.cb5 e6 9.e4 Ne7; C) 5.Nf3 Bb7 (5...Nh6 6.Nc3 Bb7 7.Qb3 e6 8.e4 Nf7 9.Be2 a6; 5...a6 6.Nc3 Bb7 7.e4 ab5 8.cb5 e6 9.d4 Ne7) 6.Nc3 a6 7.e4 e6 8.d4 Nh6 9.Bd3 0–0; D) 5.e3 Bb7 (5...Nh6 6.Nf3 a6 7.Nc3 ab5 8.cb5 Bb7 9.d4 0–0; 5...a6 6.Nc3 Nh6 7.d4 ab5 8.cb5 0–0 9.Bd3 Bb7) 6.Nf3 Nh6 7.Nc3 a6 8.Qb3 ab5 9.cb5 c5.

4.b5 Nh6 A) 5.Nc3 Bb7 (5...a6 6.Nf3 Bb7 7.e4 Bg7 8.Qb3 0–0 9.h4 f5; 5...Bg7 6.e3 a6 7.Bd3 ab5 8.cb5 c6 9.Nf3 cb5) 6.e4 Bg7 7.Bd3 0–0 8.Qb3 a6 9.Nf3 e6; B) 5.e3 a6 (5...Bg7 6.Nc3 a6 7.Bd3 Bb7 8.Nf3 ab5 9.cb5 c5; 5...Bb7 6.Nf3 a6 7.Nc3 e6 8.Bd3 ab5 9.cb5 Ba3) 6.Nf3 ab5 7.cb5 Bb7 8.Nc3 c5 9.d4 cd4; C) 5.d4 Bg7 (5...Nf7 6.Nf3 Nd6 7.e3 Bb7 8.Nc3 a6 9.Bd3 Bg7; 5...a6 6.Nf3 ab5 7.cb5 Bb7 8.Nc3 e6 9.Qd2 d5) 6.Nf3 0–0 7.Nc3 Bb7 8.e3 a6 9.Bd3 Nf5; D) 5.Nf3 Bg7 (5...Bb7 6.e3 a6 7.Nc3 ab5 8.cb5 c5 9.d4 cd4; 5...a6 6.Nc3 Bb7 7.e4 Bg7 8.Qb3 0–0 9.h4 f5) 6.Nc3 a6 7.e4 Bb7 8.Bd3 0–0 9.0–0 ab5.

4.Nc3 Bb7 A) 5.b5 Nh6 (5...e6 6.Nf3 a6 7.e3 ab5 8.cb5 Nh6 9.h4 Ba3; 5...a6 6.Nf3 Bg7 7.e4 e6 8.d4 Nh6 9.Bd3 ab5) 6.Nf3 a6 7.e4 e6 8.Qb3 Nf7 9.Be2 Nd6; B) 5.e3 Na6 (5...a6 6.b5 ab5 7.cb5 Nh6 8.Nf3 e6 9.h4 Ba3; 5...e6 6.b5 a6 7.Nf3 ab5 8.cb5 Nh6 9.h4 Ba3) 6.a3 Nh6 7.Nf3 Bg7 8.Bd3 Nf7 9.0–0 0–0; C) 5.e4 Nh6 (5...Na6 6.a3 c5 7.b5 Nc7 8.Nf3 Nh6 9.Bd3 Bg7; 5...a6 6.Nf3 Nc6 7.b5 ab5 8.cb5 Ne5 9.d4 Nf3) 6.Nf3 Na6 7.Qa4 c5 8.b5 Nc7 9.Qc2 Bg7; D) 5.Nf3 e6 (5...Nh6 6.b5 a6 7.e4 e6 8.Be2 Bb4 9.Qb3 Qe7; 5...a6 6.d4 Bg7 7.d5 f5 8.g3 a5 9.b5 Nf6) 6.b5 a6 7.e4 Nh6 8.Be2 Bb4 9.Qb3 Qe7.

4.Nc3 Nc6 5.b5 Na5 (5...Ne5 6.e4 Bb7 7.d4 Nf7 8.Bd3 Ngh6 9.Nf3 Bg7; 5...Nd4 6.Nd5 Nf5 7.e4 Nd6 8.e5 fe5 9.Be5 Nf6) 6.e4 Bg7 7.Nf3 Bb7 8.Bd3 e6 9.0–0 Ne7.

4.Nc3 e6 5.b5 a6 (5...Bb7 6.Qc2 a6 7.Nf3 ab5 8.cb5 Ba3 9.e4 Ne7; 5...Nh6 6.Nf3 a6 7.e3 ab5 8.cb5 Bb7 9.h4 Ba3) 6.Nf3 Bb7 7.e3 ab5 8.cb5 Nh6 9.h4 Ba3.

4.Nc3 Bg7 A) 5.e4 Nh6 (5...Bb7 6.Nf3 Nc6 7.b5 Ne5 8.Be2 Nh6 9.0–0 0–0; 5...a6 6.b5 Nh6 7.Nf3 e6 8.d4 Bb7 9.h3 Nf7) 6.b5 Bb7 7.Bd3 d6 8.Nf3 Nd7 9.Qe2 Nc5; B) 5.b5 Nh6 (5...Bb7 6.Nf3 Nh6 7.e3 a6 8.Bd3 ab5 9.cb5 c5; 5...f5 6.g3 Bb7 7.Nf3 Nf6 8.Bg2 Ne4 9.0–0 0–0) 6.Nf3 Bb7 7.Qb3 a6 8.e4 0–0 9.h4 f5; C) 5.e3 Nc6 (5...Bb7 6.b5 f5 7.Nf3 Nf6 8.Qb3 0–0 9.Bd3 c5; 5...Nh6 6.b5 a6 7.Nf3 ab5 8.cb5 Bb7 9.d4 0–0) 6.b5 Na5 7.Bd3 Bb7 8.Nge2 Bg2 9.Rg1 Bb7; D) 5.Nf3 Nc6 (5...f5 6.g3 Nc6 7.b5 Na5 8.d3 Bb7 9.Bg2 Nf6; 5...Nh6 6.b5 Bb7 7.e3 a6 8.Bd3 ab5 9.cb5 e6) 6.b5 Ne5 7.e4 Nh6 8.Be2 Bb7 9.0–0 0–0.

4.Nc3 Nh6 A) 5.Nf3 Bb7 (5...Nc6 6.Nd5 a5 7.b5 Na7 8.e4 Bg7 9.Bd3 0–0; 5...Bg7 6.b5 Bb7 7.e3 a6 8.Bd3 ab5 9.cb5 e6) 6.b5 a6 7.e4 e6 8.Be2 ab5 9.cb5 Bd6; B) 5.e3 Na6 (5...Bb7 6.b5 a6 7.Nf3 ab5 8.cb5 Bg7 9.d4 Nf5; 5...Nc6 6.b5 Na5 7.Nf3 Bb7 8.Bd3 Bg7 9.0–0 0–0) 6.Qa4 c5 7.b5 Nc7 8.Nf3 Bb7 9.Qb3 Nf5; C) 5.e4 Bb7 (5...e5 6.b5 Bc5 7.Be2 0–0 8.Nf3 Bb7 9.0–0 Re8; 5...Bg7 6.b5 Bb7 7.Qb3 f5 8.Bd3 d6 9.Nd5 Bb2) 6.b5 Bg7 7.Bd3 d6 8.Nf3 Nd7 9.0–0 f5; D) 5.b5 Bb7 (5...Bg7 6.Nf3 Bb7 7.e3 0–0 8.Bd3 f5 9.h4 e5; 5...e6 6.Nf3 Bb7 7.e4 a6 8.Be2 Bg7 9.0–0 0–0) 6.Nf3 e6 7.e4 a6 8.Be2 ab5 9.cb5 Bg7.

4.d4 Nc6 +=.

4.e3 a6 A) 5.Nc3 Bb7 (5...Bg7 6.Nf3 Nh6 7.Bd3 Nc6 8.Qb3 e6 9.0–0 0–0; 5...Nc6 6.b5 Na5 7.Nf3 Nh6 8.Bd3 Bg7 9.0–0 ab5) 6.b5 f5 7.Nf3 Nf6 8.Bd3 Bg7 9.0–0 0–0; B) 5.Qb3 Nc6 (5...e6 6.b5 ab5 7.cb5 Nh6 8.Nc3 c5 9.Nf3 d5; 5...Nh6 6.Nf3 Nc6 7.Nc3 e6 8.b5 Na5 9.Qc2 Be7) 6.Nf3 e6 7.a3 Bb7 8.Bd3 Bg7 9.Nc3 Nge7; C) 5.Qf3 Ra7 6.Nc3 Bb7 7.Qg3 e6 8.Nf3 Nh6 9.b5 Nf5; D) 5.Nf3 Nc6 (5...Bb7 6.b5 Bg7 7.Nc3 Nh6 8.Bd3 ab5 9.cb5 d5; 5...Nh6 6.b5 Bg7 7.Nc3 Bb7 8.Qb3 ab5 9.cb5 e6) 6.b5 ab5 7.cb5 Nb4 8.Nc3 Bb7 9.Qb3 e6.

4.e3 Na6 A) 5.Qb3 e6 (5...Nh6 6.Nc3 e6 7.a3 Bb7 8.Nf3 Nf5 9.Bd3 Bg7; 5...e5 6.a3 Bb7 7.Nc3 Ne7 8.Nf3 c5 9.Be2 Bg7) 6.a3 Nh6 7.Nf3 Bb7 8.Nc3 Bd6 9.Qa4 c5; B) 5.Qa4 c5 (5...Bb7 6.Nf3 e6 7.c5 Qc8 8.d4 Rb8 9.Bc3 bc5) 6.a3 e6 7.b5 Nc7 8.Nf3 a6 9.ba6 Ba6; C) 5.b5 Nc5 6.Nf3 Nh6 7.Nc3 Bb7 8.d4 Ne6 9.Bd3 Bg7; D) 5.a3 c5 (5...Nh6 6.Nf3 Bg7 7.Nc3 Bb7 8.d4 c5 9.dc5 bc5; 5...Bb7 6.Nf3 Bg7 7.d4 Nh6 8.Nc3 c5 9.dc5 bc5) 6.Qb3 e5 7.b5 Nc7 8.Nc3 Bb7 9.Nf3 e4.

4.e3 Bb7 5.b5 a6 (5...Nh6 6.Nf3 a6 7.Nc3 ab5 8.cb5 c5 9.d4 cd4; 5...Bg7 6.Nc3 f5 7.Nf3 Nf6 8.Qb3 0–0 9.Be2 e6) 6.Nc3 Nh6 7.Nf3 ab5 8.cb5 c5 9.d4 cd4.

4.e3 Bb7 5.Nc3 Na6 (5...Nc6 6.b5 Na5 7.Bd3 Bg7 8.Nf3 f5 9.0–0 Nf6; 5...Nh6 6.b5 a6 7.Nf3 ab5 8.cb5 c5 9.Bd3 Bg7) 6.a3 Nh6 7.Nf3 Bg7 8.Bd3 Ng4 9.0–0 f5.

4.e3 Bb7 5.Nf3 a6 6.b5 ab5 7.cb5 c5 8.Bd3 Nh6 9.0–0 Bg7.

4.e3 Bb7 5.Nf3 Na6 6.Qa4 e5 7.c5 Qc8 8.d4 ed4 9.ed4 bc5.

4.e3 Bb7 5.Nf3 Nc6 6.b5 Na5 7.Bd3 a6 8.Nc3 Nh6 9.a4 e6.

4.e3 Bg7 A) 5.Nf3 Bb7 (5...Nh6 6.b5 a6 7.Nc3 Bb7 8.d4 Nf5 9.Bd3 0–0; 5...a6 6.Nc3 Nh6 7.Bd3 Nc6 8.Qb3 Nf7 9.0–0 0–0) 6.b5 Nh6 7.Nc3 a6 8.d4 Nf5 9.Bd3 0–0; B) 5.Nc3 Nc6 (5...Bb7 6.b5 a6 7.Nf3 Nh6 8.Qb3 e6 9.d4 0–0; 5...Nh6 6.b5 Bb7 7.Nf3 a6 8.d4 Nf5 9.Bd3 0–0) 6.b5 Na5 7.f4 Nh6 8.Nf3 Nf5 9.Bd3 Nd6; C) 5.Qf3 c6 6.Ne2 Nh6 7.Nf4 Na6 8.Nd3 Nf7 9.Nc3 0–0; D) 5.b5 Bb7 (5...a6 6.Nf3 Bb7 7.Nc3 Nh6 8.Qb3 e6 9.h4 Ng4; 5...Nh6 6.Bd3 a6 7.Nc3 Bb7 8.Nf3 ab5 9.cb5 c5) 6.Nf3 Nh6 7.Bd3 a6 8.0–0 0–0 9.Nc3 ab5.

4.e3 Nh6 A) 5.Nf3 Nc6 (5...a6 6.b5 ab5 7.cb5 c5 8.Be2 Bb7 9.Nc3 d5; 5...Bb7 6.b5 a6 7.Nc3 ab5 8.cb5 c5 9.d4 cd4) 6.b5 Na5 7.Nc3 a6 8.Be2 ab5 9.cb5 Bb7; B) 5.Nc3 Na6 (5...Nc6 6.b5 Na5 7.Bd3 Bg7 8.Nh3 Nf7 9.Qe2 Ne5; 5...Bb7 6.b5 a6 7.Nf3 ab5 8.cb5 c5 9.d4 cd4) 6.a3 Bb7 7.Nf3 Bg7 8.d4 c5 9.dc5 bc5; C) 5.Qf3 c6 6.b5 Bg7 7.Nc3 0–0 8.h4 Bb7 9.h5 g5; D) 5.b5 a6 (5...Bb7 6.Nf3 a6 7.Nc3 ab5 8.cb5 c5 9.d4 cd4; 5...Bg7 6.Nc3 a6 7.Bd3 Bb7 8.Nf3 ab5 9.cb5 c5) 6.Nc3 Bb7 7.Nf3 ab5 8.cb5 c5 9.d4 cd4.

4.Nf3 Bb7 A) 5.Nc3 e6 (5...Nh6 6.b5 a6 7.e4 e6 8.h3 Bd6 9.Be2 ab5; 5...Bg7 6.b5 a6 7.e3 ab5 8.cb5 e6 9.Be2 Ne7) 6.b5 a6 7.g3 ab5 8.cb5 Bd6 9.Qc2 Ra5; B) 5.e3 Na6 (5...Nc6 6.b5 Na5 7.Nc3 Nh6 8.Qc2 a6 9.Bd3 Bg7; 5...a6 6.b5 Nh6 7.Nc3 e6 8.h4 Bg7 9.h5 ab5) 6.a3 Bg7 7.Bd3 Nh6 8.Nc3 Ng4 9.0–0 f5; C) 5.e4 Be4 (5...Na6 6.Qa4 c5 7.b5 Nc7 8.Nc3 Nh6 9.Be2 Bg7; 5...e5 6.b5 Bc5 7.Nc3 Ne7 8.Be2 0–0 9.0–0 Nc8) 6.Nc3 Bf5 7.Nd4 Nh6 8.Nf5 Nf5 9.Bd3 Nd6; D) 5.b5 Nh6 (5...a6 6.Nc3 Nh6 7.e4 e6 8.Be2 Bb4 9.Qb3 Qe7; 5...Bg7 6.e3 a6 7.Bd3 e6 8.Nc3 ab5 9.cb5 f5) 6.Nc3 a6 7.e4 e6 8.Be2 ab5 9.cb5 Bg7.

4.Nf3 Nc6 5.b5 Na5 (5...Ne5 6.Ne5 fe5 7.Be5 Nf6 8.e3 Bg7 9.Be2 Bb7) 6.e4 Bg7 7.Nc3 e6 8.Bd3 Ne7 9.h4 Bb7.

4.Nf3 e6 A) 5.Qb3 Bb7 (5...a6 6.b5 Nh6 7.Nc3 Bb7 8.e3 ab5 9.cb5 Bg7; 5...Nh6 6.Nc3 Bb7 7.b5 a6 8.e3 ab5 9.cb5 Bg7) 6.b5 a6 7.Nc3 Nh6 8.e4 Bd6 9.Be2 0–0; B) 5.b5 Bb7 (5...a6 6.Nc3 Nh6 7.e4 Bb7 8.Be2 Bd6 9.0–0 0–0; 5...Nh6 6.e4 a6 7.Nc3 Bb7 8.Be2 Bd6 9.0–0 0–0) 6.Nc3 Nh6 7.e3 a6 8.Bd3 ab5 9.cb5 Ba3.

4.Nf3 Bg7 A) 5.b5 a6 (5...Nh6 6.e3 a6 7.Nc3 Bb7 8.Bd3 ab5 9.cb5 e6; 5...Bb7 6.Nc3 a6 7.Qb3 e6 8.e4 ab5 9.cb5 Ne7) 6.e3 Bb7 7.Bd3 e6 8.Nc3 ab5 9.cb5 Nh6; B) 5.e3 Bb7 (5...a6 6.Nc3 Nh6 7.Bd3 Nc6 8.Qb3 Ng4 9.0–0 0–0; 5...Nh6 6.b5 Bb7 7.Nc3 a6 8.Qb3 ab5 9.cb5 e6) 6.b5 Nh6 7.Bd3 a6 8.0–0 e6 9.Nc3 ab5; C) 5.Qb3 Nc6 (5...Nh6 6.b5 a6 7.Nc3 Bb7 8.e4 0–0 9.h4 f5; 5...e6 6.Nc3 Nc6 7.d4 Nge7 8.d5 ed5 9.cd5 Ne5) 6.Nc3 Nh6 7.e3 Nf5 8.Bd3 Bb7 9.0–0 0–0; D) 5.Nc3 Nc6 (5...Nh6 6.b5 a6 7.e3 Bb7 8.Bd3 e6 9.a4 Ng4; 5...Bb7 6.b5 a6 7.e3 e6 8.Bd3 ab5 9.cb5 f5) 6.b5 Ne5 7.e4 Nh6 8.Be2 Bb7 9.0–0 0–0.

4.Nf3 Nh6 A) 5.b5 Bb7 (5...a6 6.Nc3 Bb7 7.e4 e6 8.h3 Bd6 9.d4 0–0; 5...Bg7 6.Nc3 Bb7 7.Qb3 e6 8.e4 Nf7 9.Be2 a6) 6.Nc3 a6 7.e4 e6 8.Be2 Bb4 9.Qb3 Qe7; B) 5.e3 Nc6 (5...Na6 6.a3 c5 7.Qb3 Bb7 8.Bd3 Nf5 9.Nc3 Bg7; 5...Bb7 6.b5 a6 7.Bd3 ab5 8.cb5 d5 9.Nc3 Nd7) 6.b5 Na5 7.Nc3 a6 8.Bd3 Bb7 9.0–0 Bg7; C) 5.Qa4 Bb7 (5...Bg7 6.b5 Bb7 7.Nc3 e6 8.e3 a6 9.Qb3 0–0; 5...Nc6 6.b5 Na5 7.Nc3 Bb7 8.e4 Bg7 9.Bd3 0–0) 6.Nc3 Nc6 7.e3 e6 8.b5 Ne5 9.Be2 Bc5; D) 5.Nc3 Bb7 (5...e6 6.b5 Bb7 7.Qc2 a6 8.Ne4 Be7 9.h4 Rf8; 5...Nc6 6.b5 Ne5 7.e4 Bg7 8.Be2 0–0 9.0–0 Bb7) 6.b5 a6 7.e4 e6 8.Be2 Bb4 9.Qb3 Qe7.

4.b5 Bb7

5.Qc2 a6 (5...Nh6 6.Nf3 Bg7 7.Nc3 a6 8.e4 0–0 9.h4 Ng4; 5...Bg7 6.Nc3 f5 7.Nf3 Nf6 8.g3 0–0 9.Bg2 a6) 6.Nc3 Bg7 7.Nf3 Nh6 8.e4 0–0 9.Bd3 Ng4.

5.Nc3 f5 (5...Bg7 6.Nf3 Nh6 7.e3 a6 8.Qb3 Nf5 9.Bd3 ab5; 5...Nh6 6.e4 Bg7 7.Bd3 d6 8.Nf3 Nd7 9.0–0 0–0) 6.Nf3 Nf6 7.g3 e6 8.Bg2 Bd6 9.0–0 0–0.

5.e3 a6 6.Nf3=.

5.e3 c5 6.Nf3 (better 6.d4+=) 6...g5?? (6...e5 7.Be2+=) 7.d4?? (better 7.Ne5 e6 8.Qh5 Ke7 9.Ng6 hg6 10.Qh8+–) 7...d6 (7...g4!? 8.Nh4 Nh6+–) 8.d5 (8.dc5 dc5 9.Qd8 Kd8 10.Ng5 Nh6+–) 8...e5 (8...Bh6 9.Bd3+–) 9.Nfd2 (9.de6!? g4 10.Nh4 Nh6+–) 9...a5 (9...a6 10.Nc3+–) 10.Qh5 (10.Bd3 Nh6+–) 10...Kd7 11.Bd3 Nh6 12.0–0 (12.Nc3 Kc8+–) 12...Nf5?? (better 12...Kc8+–) 13.Bf5+–. GuestFDGR – GuestXGWH, freechess.org, 2016.

5.e3 d6 6.Nf3 Nd7 7.Nc3 Bg7 8.Nd4 Nc5 9.Nc6 Bc6.

5.e3 Bg7 6.Nf3 Nh6 7.Nc3 0–0 8.h4 e5 9.Bd3 f5.

5.e3 Nh6 6.Nf3 a6 7.Nc3 ab5 8.cb5 c5 9.Bd3 Bg7.

5.Nf3 c6 (5...Bg7 6.Nc3 Nh6 7.e3 0–0 8.h4 e5 9.Bd3 f5; 5...Nh6 6.Nc3 Bg7 7.e3 Nf5 8.Bd3 Nd6 9.Qb3 a6; 5...a6 6.Nc3 ab5 7.cb5 e6 8.e4 Bb4 9.Bc4 Ne7) 6.e3 (6.Nc3 a6 7.e4 Nh6 8.Bd3 ab5 9.cb5 cb5) 6...a6 7.a4 (7.Nc3 Nh6 8.Qb3 Nf5 9.Rc1 ab5) 7...c5 (7...ab5 8.cb5 Nh6 9.Nc3 c5) 8.Nc3 d5 (8...Nh6 9.Be2+/– (9.Nd5 Bg7) 9...Bg7) 9.d4 (9.cd5!? Nh6+–) 9...e6+/– (9...ab5+–) 10.cd5 ed5 11.Ba3 (11.dc5!? Bc5 12.Qb3+/–) 11...c4 '+/=' 12.Qc1 Bd6 13.Be2 Ne7 14.Nd2 0–0 15.0–0 Bc8? (better is 15...Ba3!? 16.Ra3 f5=) 16.e4 Ba3 17.Ra3 Be6 18.ed5 Nd5 19.Bc4 ab5 20.Bb5 (20.ab5 Ra3 21.Qa3 Kg7+–) 20...f5 (20...Nc7 21.Nf3+/–) 21.Nf3 Kg7 (21...Qd6!?+/–) 22.Re1+– Rf6? (22...Nc7 23.d5! Deflection: e6 23...Bg8 24.Qd2+–) 23.Ng5 (better is 23.Nd5 Bd5 24.Re8+–) 23...Nc7 24.Ne6 Ne6 25.d5 Nc5 (25...Nc7 26.Qf4 Rd6 27.h4+–) 26.h3 (better is 26.Re8 Qd6 27.Bc4+–) 26...Ne4?? 27.Ne4 fe4 28.Re4 Nd7 29.Rae3 Rf8 30.Bd7 Qf6 31.Rf3 Qd8 32.Qc3 Rf6 33.Rf6 Qf6 34.Re7 Kh6N 35.Qf6 Ra4 36.Ba4 Kh5 37.Rh7 1–0. Hoelldorfer,August – Pawlikowsky,Dismas, Bayern–ch Seniors, 1994.

3.c4 c6

4.e3 Qc7 5.Nf3 Bh6 (5...e5 6.a3+=) 6.Nc3 a5 7.b5 cb5 (7...Bg7 8.d4+–) 8.Nb5 (worse 8.cb5 b6 9.Rc1 Qb7+–) 8...Qb6 9.Bd4 Qd8 10.Be2 Nc6 11.Bb2 e5 (11...Bg7 12.d4+–) 12.a3 (12.Nd6 Kf8+–) 12...Nge7 (12...d6!?+–) 13.Nd6+– Kf8 14.Qb3 (14.d4 Qb6 15.Qb1 ed4 16.Bd4 Qb1 17.Rb1 Nd4 18.Nd4 Bg7+–) 14...Qc7? (better 14...Nf5 15.Nf5 gf5+–) 15.c5+– Nf5 (15...Nd8 16.d4 a4+–) 16.Qf7 1–0. GuestNKJR – GuestNNFD, freechess.org, 2017.

4.e3 Bg7 5.Nf3 Qb6 (5...e5 6.Nc3+=) 6.a3 Qc7 (6...a5 7.c5 Qc7 8.d4+=) 7.d4+– g5 (7...d6 8.Be2+–) 8.Bd3 g4 9.Nh4 d5 (9...Nh6 10.Nf5 Nf5 11.Qg4+–) 10.cd5+– cd5 11.Nc3 Nh6 (11...Qd7 12.Nf5 e6 13.Qg4+–) 12.Nd5 Qd6 (12...Qd8 13.Rc1 Nc6 14.Nf4+–) 13.Qc2 Qd5? (13...Nc6 14.Nc3 e6+–) 14.Qc8 Qd8 (14...Kf7 15.Bc4 Rc8 16.Bd5 e6 17.Bb7 Nd7+–) 15.Bb5 Nc6 (15...Nd7 16.Bd7 Kf8 17.Qb7+–) 16.Qb7 0–0 17.Qc6 (17.Bc6 Rc8+–) 17...e5 (17...Kh8 18.Qd7+–) 18.0–0 (18.Qe6 Kh8 19.Nf5 Rb8 20.Nh6 Bh6+–) 18...ed4 (18...f5 19.g3 ed4 20.Rad1+–) 19.Bd4 Rc8 (19...Kh8 20.Rac1+–) 20.Qe6 Nf7 (20...Kh8 21.Nf5 Rc7 22.Nh6 Bh6 23.Qg4+–) 21.Nf5 Re8 (21...Kh8 22.Ng7 Kg7+–) 22.Be8 Qe8 23.Ne7 Kh8 24.Qc8 f5 25.Qe8 1–0. DEFFM – GuestDWKP, freechess.org, 2018.

4.Nf3 a5 (4...e5 5.a3=) 5.b5 b6 (5...cb5 6.cb5 d5 7.d4+=) 6.Nc3 a4 (6...Bb7 7.e4+/–) 7.Na4+/– 1–0. Fournier,Frederic (2395) – WWJD1, chessworld.net, 2009.

3.c4 Nc6

4.a3 b6 5.Nf3 d6 (5...Nh6!?+=) 6.e3 Bf5 7.Nc3 Qd7 (7...Nh6 8.Be2+/–) 8.e4 (8.h3 Nh6+–) 8...Bg4+/– 9.Be2 Bf3 10.Bf3 (10.gf3?! Nd4+=) 10...Bh6 (10...Bg7 11.0–0 Nd4 12.e5+/–) 11.Nd5 (11.0–0 0–0–0+–) 11...0–0–0 (11...e6 12.Bg4 0–0–0 13.0–0+/–) 12.Bg4 f5 (12...e6!? 13.0–0 Ne5+/–) 13.Bh8 fg4 14.b5 e6?? (14...Na5 15.d3 e6+–) 15.bc6 Qc6 16.Qg4 Qd7 17.Nc3 e5 18.Qd7 Rd7 (18...Kd7 19.d4 Ke6 20.de5 de5 21.Rd1+–) 19.d4 Re7 (19...ed4 20.Bd4 Ne7 21.Nd5+–) 20.de5 de5 21.h4 Kd7 (21...Bg7 22.Bg7 Rg7 23.0–0–0+–) 22.Rd1 Ke6 (22...Kc8 23.h5 Bg5 24.hg6 hg6 25.Nd5+–) 23.Rd8 Kf7 (23...Rd7 24.Rd7 Kd7 25.Be5+–) 24.Nd5 Re8 (24...Re6 25.Rd7 Kf8 26.Rc7+–) 25.Rd7 Re7 (25...Ke6 26.Rh7 Kd6 27.Rc7+–) 26.Ne7 Ne7 27.Rc7 1–0. Waibel,Ulrich (1650) – Juha,Michael (1640), remoteschach.de, 2004.

4.a3 e5 5.e4=.

4.a3 Bg7 5.e3 (5.b5 Ne5 6.e4 c5+=) 5...e5= 6.b5 (6.Nf3 Nge7=) 6...Nce7+= 7.a4 (7.d4 ed4 8.Bd4 Nf5+=) 7...b6 (7...h6 8.d4+=) 8.Nf3 (8.a5 ba5 9.d4 Bb7+=) 8...d6 (8...e4 9.Ng5 d5 10.cd5 Qd5 11.h4+=) 9.d4 e4 (9...a6 10.Bd3+=) 10.Nfd2 f5 11.Nc3 (11.a5 ba5 12.Ra5 a6+=) 11...Nh6 (11...c5 12.a5+=) 12.Qb3 (better 12.a5+=) 12...Be6? (12...0–0 13.Be2+=) 13.Na2 (better 13.d5!? Bc8 14.Nce4+–) 13...Bf7 (13...0–0 14.Be2+=) 14.Nb4 (14.Be2 0–0+=) 14...0–0 15.a5 (15.d5 Bb2 16.Qb2 Qd7+–) 15...ba5= 16.Na6 (worse 16.Ra5 c5 17.Ra6 cb4 18.Qb4 Nc8–/+) 16...c6 17.Qa4 (17.Bc3 Rc8=) 17...cb5 (17...Rc8 18.Qa5 cb5 19.Qb5=) 18.cb5 (18.Qb5 d5=) 18...Qb6 (18...Rc8 19.Qa5 Rc2 20.Qa3=) 19.Nc4 Exerts pressure on the isolated pawn 19...Bc4 (19...Qd8 20.Ba3 Bc4 21.Bc4 Kh8 22.Be6=) 20.Bc4+= d5 (20...Nf7+=) 21.Be2 (21.Ba3 Rac8 22.Bb3+– (22.Be7 Rc4 23.Qb3 a4–+)) 21...Nc6 (better 21...f4!? 22.ef4 Qf6=+) 22.Ba3 (better 22.bc6 Qb2 23.Nc7 (23.Qa5?! Rac8+=) 23...Qc3 24.Kf1+–) 22...Nb8? (better 22...Nb4+–) 23.Bf8 Bf8 (23...Kf8 24.Qa5 Qa5 25.Ra5 Na6 26.Ra6+–) 24.0–0 (24.Qa2 Qb7 25.Nc7 Bb4 26.Kf1 Nf7+–) 24...Nd7? (better 24...Na6 25.ba6 Bb4+–) 25.Rac1 (25.Rfc1 Nf6+–) 25...Bb4 (25...Qd8 26.Nc7 Rb8 27.Nd5+–) 26.Rc6 (26.Qb3 Kh8+–) 26...Qd8 27.Nb4 Nb6 (27...ab4 28.Qb4 Nb6+–) 28.Qa5 Nc4 (28...f4 29.Ra1 fe3 30.Rb6 ef2 31.Kf1+–) 29.Qd8 Rd8 30.Rc4 (better 30.Ra1+–) 30...Kh8 (30...dc4 31.Nc6 Rd7+–) 31.Rc7 Ra8 32.Rfc1 g5 33.Rc8 Rc8 34.Rc8 Kg7 35.Rc7 Kf6 36.Ra7 Nf7 37.Rf7! Kf7 38.b6 Ke7 39.b7 Kd7 (39...h5 40.b8Q g4 41.Nd5 Kf7 42.Qc7 Kg6 43.Nf4 Kh6 44.Qf7 Kg5 45.Ne6 Kh4 46.Qf6) 40.b8Q Ke7 41.Qc7 Ke6 (41...Kf6 42.Nd5 Kg6 43.Qd6 Kf7 44.Qf6 Ke8 45.Bb5) 42.Nd5! Kd5 (42...Kd5 43.Bc4) 43.Bc4 1–0. jaddwarrior (2155) – barryburn29223 (1630), ChessWorld.net, 2012.

4.b5 Na5 5.e4 b6 6.Nf3 Bb7 7.d3 e5 8.Be2 Bc5 9.0–0 Qe7 10.Nbd2 Nh6 11.h3 0–0 12.Nb3 Nb3 13.Qb3 Kg7 14.a4 a5 15.Ba3 Ba3 16.Qa3 Rae8 17.Qe7 Re7 18.Nd2 d6 19.Rac1 f5 20.f3 f4 21.Kf2 Nf7 22.Rg1 Nh6 23.g3 Ng8 24.gf4 Rf4 25.Rg4 Ref7 26.Rcg1 Bc8 27.Rf4 Rf4 28.Rh1 Nf6 29.Nf1 Nh5 30.Ne3 Be6 31.Nd5 Bd5 32.cd5 Rf7 33.Ke3 Re7 34.Rg1 Nf4 35.h4 Rf7 36.Bf1 Re7 37.d4 Nh5 38.de5 de5 39.Rg2 Nf6 40.Rc2 h6 41.Rg2 Nh5 42.Rc2 Nf6 43.Rc6 Kf7 44.d6 cd6 45.Rb6 Ra7 (Better is 45...d5!?+/–) 46.Rd6+– Nd7 47.Bc4 Kg7 48.Bd5 Nc5 49.Rc6 Na4 50.b6 (Better is 50.Bb3 Nb2 51.b6 Nd1 52.Bd1 Ra8+–) 50...Nb6 51.Rb6 a4 52.Rb7 Rb7 53.Bb7 a3 54.Bd5 Kf6 55.Kf2 g5? (55...h5 56.Kg3 g5 57.Ba2+=) 56.hg5?? (Better is 56.h5+–) 56...Kg5= 57.Kg3 h5 58.f4 ef4 59.Kf3 Kf6?? (Better is 59...h4=+) 60.Kf4+– h4 61.e5 (61...Kg6 62.Kg4+–) 1–0. hal1958 – Oksana, playchess.de, 2003.

3.c4 e5

4.a3 a6 5.Nc3 c6 (better is 5...Nc6!?+=) 6.d4 d6 7.Nf3 Nh6 8.c5 (8.e3 Be7+/–) 8...Bg4 (8...dc5!? 9.bc5 ed4+/–) 9.cd6+– Bd6 10.Ne4 Bf5? (10...Bf3 11.ef3 Bc7 12.Qb3 ed4 13.0–0–0+–) 11.Nd6 (better is 11.Nf6 Qf6 12.de5 Bb4 13.ab4 Qe7+–) 11...Qd6 12.de5 Qd1 13.Rd1 Rf8 14.ef6 Nd7 15.Ng5 Nf6 16.f3 Bc2 (16...a5 17.e4 ab4 18.ab4+–) 17.Rd6 Nf7 (17...Nhg8 18.e4 Ke7+–) 18.Nf7 (18.Bf6?! Nd6 19.Ba1 h6+=; 18.Rf6?! Ng5 19.e4 Ke7 20.Rf8 Rf8+–) 18...Rf7 (18...Ne4 19.fe4 Rf7 20.e5+–) 19.Bf6 Bf5 (19...Bb3 20.e4+–) 20.e4 Kf8 (20...Rd7 21.Rd7 Bd7+–) 21.ef5 Re8 22.Kf2 Rc8 23.fg6 hg6 24.Bd3 b5 25.Bg6 Rfc7 26.Rhd1 c5 (26...Re8 27.Rd8 Rce7 28.Be7 Ke7 29.Re8 Kf6 30.Rd6 Kg7 31.Rc6 Kh6 32.Rh8 Kg5 33.Ke3 a5 34.h4) 27.Rd8 Rd8 28.Rd8 1–0. pcmvr (2830) – samantho (1920), net–chess.com, 2014.

4.a3 c5 5.bc5 Bc5 6.e3 Qb6!? 7.Nc3 Qb2 +=.

4.a3 c5 5.bc5 Bc5 6.e3 d6 7.d4 ed4 8.ed4 Bb6 9.Nf3 +=.

4.a3 d6 5.d3 Be6 6.Nf3 Nc6 (6...Ne7 7.e4=) 7.e3+= Bh6 8.Be2 Nge7 9.0–0 Qd7 10.Qc2 0–0–0 (10...0–0 11.b5 Nd8 12.d4+=) 11.d4 (11.b5 Nb8+–) 11...ed4+= 12.ed4 Rhf8? (better 12...d5+=) 13.d5+– Bf5 (13...Nd5 14.cd5 Bd5 15.Nc3 Bf3 16.Bf3+– (16.gf3?! d5+–)) 14.dc6 Qc6 15.Qb3 d5 (15...Bf4 16.Nc3+–) 16.c5 Be4 (16...Bf4 17.Re1+–) 17.Nd4 Qd7 18.f3 (18.Nc3 Bf5+–) 18...Bf5 19.g4 Be6 20.Bb5 (20.Re1 c6+–) 20...c6 21.Bd3 (21.Ne6?! Qe6 22.Bd3 f5+–) 21...f5 22.h3 (better 22.Re1 Bg8 23.Qd1+–) 22...fg4+= 23.hg4 (better 23.Ne6 Be3 24.Kh2 Rf3 25.Rf3 gf3 26.Qd1=) 23...g5?? (better 23...Bg4!? 24.Be2 Bh3=+) 24.Nd2?? (24.b5 cb5 25.Kh1 a6+–) 24...Ng6? (better 24...Bg4!? 25.Qa4 Bh3 26.Qa7 Qc7+=) 25.Qd1 (better 25.Bg6!? hg6 26.b5 Qc7+–) 25...Nf4 26.Be2 (26.Ne6 Qe6 27.Re1 Qd7+–) 26...Bg7 27.Rb1 (27.Re1 Kb8+–) 27...Bd4 (27...Rde8 28.Re1 (worse 28.Ne6 Re6 29.Rf2 Bb2 30.Rb2 Qg7–/+) 28...Bg4 29.Nc6 (29.fg4 Bd4 30.Bd4 Re2 31.Re2 Qg4 32.Kf1 Ne2 33.Bf2 Qh5–+) 29...Bb2 30.Na7 Kb8 31.Rb2–+) 28.Bd4+– h5 (28...Rfe8 29.Be5+–) 29.gh5 (29.b5 Ne2 30.Qe2 hg4 31.bc6 Qc6 32.fg4 Rf1 33.Nf1 Rf8+–) 29...Rh8? (better 29...Bf7 30.b5 Qh3=) 30.Be5?? (better 30.Bh8 Rh8 31.Re1+–) 30...Rh5–/+ 31.Kf2?? (31.Nb3 Re8 32.Bf4 gf4 33.Kf2 Rh2 34.Ke1–+) 31...d4 (better 31...Rh2 32.Ke1 Qh7–+ (worse 32...Re2 33.Qe2 Ne2 34.Ke2–+)) 32.Bf4+= gf4 33.Rg1?? (better 33.Bd3 Ba2 34.Rc1+=) 33...d3–+ 34.Bf1 (34.Ke1 Qd4 35.Nf1 Qg1 36.Bd3–+) 34...Bd5 (34...Qd4 35.Ke1 Re5 36.Qe2 de2 37.Rg2 Qd2 38.Kf2 Qd4 39.Ke1 Qd1 40.Rd1 ed1Q 41.Kf2 Qd4) 35.Ne4?? (better 35.Bg2 Ba2 36.Ra1=+) 35...Be4–+ 36.fe4 (36.Bg2 Qd4 37.Kf1–+) 36...d2 (36...Qd4 37.Kg2 Rg8 38.Qg4 Rg4 39.Kf3 Qg1 40.e5 Qg3 41.Ke4 Qe3) 37.Qh5?? (better 37.Qg4 Rh2 38.Kf3 Qg4 39.Rg4 d1Q 40.Rd1 Rd1 41.Bc4=+) 37...Qd4–+ 38.Kf3 Qc3 (better 38...Qe3 39.Kg4 Qg1 40.Kf4 Qf2 41.Ke5 Qd4 42.Kf4 Rf8 43.Qf5 Rf5 44.Kf5 d1Q 45.Rd1 Qd1–+) 39.Kf4 (39.Kg2 d1Q 40.Rd1 Rd1 41.Qg4 Rd7+–) 39...Rf8 40.Kg5 (40.Qf5 Rf5 41.Kf5 Qf3 42.Ke5 Kd8+–) 40...Qe3 41.Kg6?? (better 41.Kh4 Qe1 42.Re1 de1Q 43.Kh3 Qe4 44.Bg2 Qe3 45.Kh2+–) 41...Qg1 42.Kh7 (42.Qg5 Rg8 43.Kh6 Qg5 44.Kh7 Qg6) 42...Qg8 43.Kh6 Rf6 44.Qg6 Qg6 0–1. e4_e5_f4 (1690) – Gojko77 (1655), lichess.org, 2020.

4.a3 Ne7 5.e3 d6 6.Nf3 Bd7 (6...a5 7.Qa4 Bd7 8.b5=) 7.d4+= Be6 (7...a5 8.Bd3+=) 8.de5 (8.Bd3 Bg7+=) 8...de5 9.Qd8 Kd8 10.Nc3 Nd7 11.Rd1 Nc6 12.c5 Bb3 (12...Kc8 13.Bb5+=) 13.Rd2+– e4? (better 13...a5 14.Ne4 Be7+=) 14.Ne4+– f5?? (14...Ke7+–) 15.Nf6 Bg7 (15...Kc8 16.Nd7 Rg8+–) 16.Rd7 Kc8 17.Rg7 a5 (17...Nd8 18.Ng5 h6 19.Be5+–) 18.Bb5 (better 18.b5 Nd8 19.Ng5 Ne6 20.Ne6 Be6+–) 18...ab4 19.ab4 (19.Bc6!? bc6 20.Be5 Ra7 21.ab4 Bc4+–) 19...Ra2 20.Bc1 (20.Bc6 Rb2 21.Bd7 Kb8+–) 20...Ra1 (20...Nb4 21.Bd7 Kb8 22.Ne5+–) 21.0–0 Nb4 22.Bd7 (22.Bb2 Ra7+–) 22...Kb8 23.Bd2 (23.Bb2!? Ra2 24.Be5 Na6+–) 23...Rf1 24.Kf1 Bc4 (24...Nd3 25.c6+–) 25.Ke1 (25.Kg1 Nd3 26.c6 b5+–) 25...Nc2 (25...Nd3 26.Kd1+–) 26.Kd1 Na3 27.Ne5 Bb3 (27...Ka7 28.Rh7 Rh7 29.Nh7+–) 28.Kc1 Nc4 29.Nf7 Rf8 30.Nh7 Rf7 31.Rf7 Nd2 (31...Ne5 32.Rf8 Ka7 33.Be8+–) 32.Rf8 Ka7 33.Kd2 Ka6 34.Ra8 1–0. OnlyPolishOpening – mshafiq313, lichess.org, 2020.

4.a4 Bg7 5.b5 d6 6.e3 Be6 (6...Ne7 7.Nf3=) 7.Nc3 Ne7 8.Nf3 Nd7 9.Be2 a6 10.0–0 ab5 (10...0–0 11.d4=) 11.ab5+= Ra1 12.Qa1 0–0 13.d4 Nf5 (13...Nb6 14.c5 dc5 15.dc5+=) 14.Rd1 ed4 15.Nd4 (15.ed4 Ne7+–) 15...Nd4+= 16.Rd4 (16.ed4 Re8+=) 16...Nc5 17.Nd5 (17.Rf4 Bh6 18.Rf3 Bg7=) 17...Bd5 (17...Nb3 18.Qa7 Nd4 19.Bd4 Bd5 20.cd5 Qa8 21.Qa8 Ra8–+) 18.Rd5+= (18.cd5 Nb3 19.Qa7 Nd4 20.Bd4 Qa8 21.Qa8 Ra8–+) 18...Qe7 19.Bf3 f5 20.Rc5 (20.Bg7 Qg7 21.Qg7 Kg7+=) 20...dc5 21.Bb7 Bb2 22.Bd5 Kg7 (22...Kh8 23.Qb2 Qf6 24.Qf6 Rf6 25.f3=) 23.Qb2= Qf6 24.Qc1 (24.Qa3 f4 25.e4 f3=) 24...Rd8 (24...f4 25.h3=) 25.g3 Qe5 26.Qd2 Qa1 27.Kg2 Qf6 28.h4 (28.Qa5 Qe5=) 28...h6 (28...c6!? 29.bc6 Qc6 30.Qb2 Qf6=+) 29.Qa2 g5 30.Qa7 Rd7 (30...Qb6 31.Qa1 Qf6 32.Qa3+=) 31.hg5+– hg5 32.Qb7 (32.Qc5 Qd6 33.Qd4 Qf6+–) 32...f4+= 33.Qc6 (33.Qc8 Re7 34.ef4 gf4 35.Qg4 Kh6 36.Qf4 Qf4 37.gf4 Kg6+=) 33...Qc6= 34.Bc6 Rd3 (34...fe3 35.fe3 (35.Bd7?? e2–+) 35...Rd2 36.Kf3=) 35.gf4 (35.Kf3 fe3 36.fe3 Kf6=) 35...gf4 36.ef4 Rd4 37.Bd5 Rf4 38.Kg3 Rd4 39.Kf3 Kf6 40.Ke3 Ke5 41.f3 Rd5 (41...Kf5 42.Be4 Ke6 43.Bd5 Ke5 44.Ke2=) 42.cd5 (42.f4!? Ke6 43.cd5 Kd5 44.Kd3 c4 45.Kc3+=) 42...Kd5= 43.Kd3 (better 43.f4=) 43...Ke5?? (better 43...c4 44.Kc3 Kc5=) 44.Kc4+– Kd6 45.f4 (45.f4 Ke6 46.f5 Kd6 47.f6+–) 1–0. BeepBeepImAJeep (2600) – footix (2015), lichess.org, 2016.

4.a4 Bg7 5.b5 Ne7 6.e3 0–0 7.Nf3 d5 8.cd5 Nd5 9.Be2 Be6 10.0–0 Qe7 (10...c5 11.Qc2=) 11.d4 e4 12.Nfd2 Nd7 (12...f5 13.Ba3 Nb4 14.a5+=) 13.Nc3 (13.Ba3 Nb4 14.Ne4 a5+–) 13...c6? (better 13...Nc3!? 14.Bc3 Bd5+=) 14.Nce4+– Rae8? (14...Rfc8 15.Ba3 Qd8 16.Bc4 cb5 17.ab5+–) 15.Rc1?? (15.Ba3!? Qd8+–) 15...Bf5 (15...f5!? 16.bc6 fe4 17.cd7 Bd7+–) 16.Nc5 (16.Ng3 Be6 17.bc6 bc6 18.Rc6 f5+–) 16...Nc5 17.Rc5 Nc7 (better 17...Qd7+–) 18.bc6 b6 (18...bc6 19.Bc4 Kh8 20.Ba3+–) 19.Rc3 (better 19.Rf5 gf5 20.Qb3 Kh8 21.Ba3+–) 19...Ne6 (19...Qd8+–) 20.Ba3 Qc7 21.Bf8 (21.g4 Bg4 22.Bg4 f5 23.Bf8 Bf8+–) 21...Bf8 (21...Nf8 22.Qb3 Kh8 23.d5+–) 22.e4 (better 22.g4 Nd4 23.gf5+–) 22...Nd4 23.Bc4 Kg7 (23...Be6 24.Nb3 Bc4 25.Rc4 Nb3 26.Qb3 Kh8+–) 24.ef5 Bd6 25.Nf3 Ne2 (25...Nf5 26.Qd5 Rd8+–) 26.Be2 g5 (26...gf5 27.Qd3 Bc5 28.Qd7 Qd7 29.cd7+–) 27.h3 (27.Rd3 Be7+–) 27...h5 (27...Kh8 28.Nd4 Rd8 29.Rd3 Bh2 30.Kh1+–) 28.Rd3 Be5 29.Rd7 Re7 30.Rc7 Rc7 31.Ne5 fe5 32.Qd7! Rd7 33.cd7 Kf6 (33...Kh7 34.d8Q g4 35.Qe7 Kh6 36.Rd1 h4 37.Rd6 Kh5 38.hg4) 34.d8Q Kf5 35.Bd3 (35.Qf8 Ke6 36.Rd1 e4 37.Rd6 Ke5 38.Qf6) 35...Kf4 Black intends g4 (35...e4 36.Qe7 ed3 37.Re1 g4 38.Qf7 Kg5 39.Re5 Kh4 40.Qh5) 36.Qd5 (36.Qf6) 36...g4 37.h4 a5 (37...b5 38.Qe4) 38.Qe4 1–0. BeepBeepImAJeep (2665) – xodun (1995), lichess.org, 2017.

4.b5 a6 5.a4 (5.d4 Bb4 6.Bc3 Bc3 7.Nc3 d6=) 5...ab5 6.ab5 Ra1 7.Ba1 c6 (7...d5 8.cd5 Qd5 9.Nc3=) 8.e3 (8.Nf3 d5 9.bc6 Nc6 10.cd5 Qd5=) 8...cb5 9.cb5 Qb6 (9...d5!?=) 10.Nf3 e4? (better 10...d6+=) 11.Qc2+– ef3 12.Qc8 Qd8 13.Qb7 fg2 14.Bg2 Bd6 15.0–0 Qc7 (15...Be5 16.Nc3+–) 16.Qc7 Bc7 17.Rc1 Bb6 (17...Kd8+–) 18.Rc8 (18.Rc8 Bd8 19.Rb8+–) 1–0. DEFFM – GuestTWXW, freechess.org, 2018.

4.b5 b6 5.e3 Bb7 6.d4 Bb4 7.Nd2 d6 (7...ed4 8.Bd4 a6 9.Ngf3=) 8.a3+= Bd2 9.Qd2 a6 10.d5 ab5 (10...Ne7 11.ba6 Na6 12.Be2=) 11.cb5+= Nd7 12.Bc4 Ne7 13.Ne2 0–0 14.0–0 Qe8 15.Nc3 f5 16.f4 e4 17.Na2 (17.Qd4 Nf6+–) 17...Nf6 Now all is on d5 18.Nb4 h5 (18...h6 19.Rac1+–) 19.Rac1 Kh7 20.Bb3 Kh6? (better 20...Rc8 21.Nc6 Bc6 22.dc6 Ra8+–) 21.Rc7+– Rb8 (21...Bc8 22.Nc6 Nc6 23.dc6+– (23.bc6?! Qd8 24.Rc8 Qc8+–)) 22.Nc6 Bc6 23.dc6 d5 24.Qb4 g5 (24...Nc8+–) 25.fg5 (25.fg5 Kg5 26.Re7+–) 1–0. DEFFM – GuestDFYQ, freechess.org, 2017.

4.b5 c6 5.a4 d5 6.e3 Ne7 7.Nf3 Bg4 8.Be2 Bg7 9.0–0 0–0 10.d4 e4 11.Nfd2 Be2 12.Qe2 f5 13.Ba3 Re8 14.Be7 Qe7 15.cd5 cd5 16.Nc3 Qd6 17.Qd1 Bf6 18.Qb3 Rd8 19.Rab1 a6 20.ba6 ba6 21.Qb6 Qb6 22.Rb6 Be7 23.Nb3 Nd7 24.Rb7 Rab8 25.Rb8 Rb8 26.Nd5 Rb3 27.Ne7 Kf8 28.Nc6 Ra3 29.a5 Rc3 30.d5 Rc5 31.h4 Rd5 32.Ra1 Nc5 1–0. hal1958 – bruno, playchess.de, 2002.

4.b5 d5 5.e3 Bb4 (5...a6 6.cd5 Ne7 7.e4 ab5 8.Nf3+–) 6.a3 (6.Qb3 Qd6 7.a3 Ba5+–) 6...Bc5 7.a4 (better 7.cd5!? Ne7 8.Nf3+–) 7...d4= 8.ed4 Bd4 9.Bd4 (9.Nc3 Nd7 10.Nf3=) 9...Qd4 (better 9...ed4!? 10.Nf3 Nh6=+) 10.Nc3+= c6 (better 10...Qd6+=) 11.Bd3?? (better 11.Nf3 Qd8 12.d4+–) 11...Qd3–+ 12.Nge2 (12.Qe2 Bf5–+) 12...Bg4 (12...Ne7 13.Ng3–+) 13.f3 (13.Qb1 Be2 14.Ne2 Qc4 15.bc6 Qc6–+ (worse 15...bc6 16.Qb7 Ne7 17.Qa8+–; worse 15...Nc6 16.Qb7 Rb8 17.Qg7–+)) 13...Bf5 14.g4 (14.Rc1 Ne7 15.0–0 0–0–+) 14...Be6 (14...Qf3 15.Ng3 Qd1 16.Rd1 Bg4 17.Rb1–+) 15.c5 (15.0–0 Ne7–+) 15...Bc4 (15...Qf3 16.Ng3 Qd1 17.Kd1 Bg4 18.Kc2–+) 16.0–0 (16.Nc1 Qd4–+) 16...Nd7 17.Nc1 (17.bc6 bc6 18.Rf2 Nc5–+) 17...Qd4 (better 17...Qf1 18.Qf1 Bf1 19.Kf1 Nc5 20.bc6 bc6 21.Ne4 Ne4 22.fe4–+) 18.Rf2 Nc5 19.bc6 bc6 20.a5 (20.N1e2 Qd7–+) 20...Ne7 21.Qc2 (21.N1e2 Qd7–+) 21...Nd3 (better 21...h5 22.g5 fg5–+) 22.N1e2 (22.Nd3 Bd3 23.Qb3–+) 22...Qf2 (22...Nf2?! 23.Nd4 Nh3 24.Kg2 Nf4 25.Kg3 ed4 26.Ne4–/+) 23.Kh1 Qf3 24.Kg1 Qf2 25.Kh1 Qf3 (25...Nf5 26.Qd3 Bd3 27.gf5 Be2 28.Ne2 Qf3 29.Kg1 Qe2 30.Rb1 gf5 31.Rb3 0–0–0 32.Re3 Rhg8 33.Rg3 Qd1 34.Kf2 Rd2 35.Ke3 Qe2) 26.Kg1 Nf4 (26...Nf2 27.h4 Nf5 28.Qf5 gf5 29.g5 Be2 30.Ne2 Qe2 31.Re1 Qe1 32.Kg2 Ng4 33.gf6 Qf2 34.Kh3 Qf3) 27.Nf4 ef4 28.Re1 Qg4 29.Kf2 Qh4 30.Kf3 Qe1 31.Kf4 (31.d3 Qe3 32.Kg2 f3 33.Kf1 Be6 34.Qe2 fe2 35.Ke1 Bg4 36.Na2 Rb8 37.Nc3 Rb2 38.Ne2 Qe2) 31...Qf2 32.Ke4 f5 (32...Rd8 33.Nb5 cb5 34.Qc3 g5 35.Qc4 Qf4) 33.Ke5 Qh2 (33...Rd8 34.Ne2 Qe2 35.Kf4 Qf2 36.Kg5 h6 37.Kf6 Qd4) 34.Kf6 Qd6 (34...Ng8 35.Kg5 Qg3) 35.Kg5 (35.Kg7 Rg8 36.Kh6 Qf4 37.Kh7 Qh2) 35...h6 36.Kh4 g5 (36...Qh2) 37.Kh3 Qd3 (37...Bf1) 38.Qd3–+ Bd3 39.Na4 0–0 40.Nc5 Bb5 (40...Rad8 41.Kh2 f4 42.Kg2 g4 43.Kf2 g3 44.Kf3 Be2 45.Ke2 f3 46.Ke3 g2 47.Nd7 g1Q 48.Kd3 Qc5 49.Ke4 Rd7 50.d4 Qd4) 41.Ne6 Rfe8 42.Nc7 g4 43.Kg3 Rac8 44.Ne8 Re8 45.Kf4 Nd5 46.Kf5 h5 47.Kg5 (47.a6 g3 48.Kg6 g2 49.Kh6 Re5 50.d4 Be2 51.de5 g1Q 52.e6 Qg7) 47...Re5 48.Kh4 (48.Kg6 g3 49.d4 g2 50.de5 g1Q 51.Kh5 Be2 52.Kh4 Qg4) 48...Nf4 49.Kg3 Ne2 50.Kf2 (50.Kh4 Rf5 51.d4 Kf7 52.a6 Kg6 53.d5 Rf1 54.dc6 Rh1) 50...Re6 (50...Bd3 51.a6 Rf5 52.Kg2 Be4 53.Kh2 Rf2) 51.Kg2 (51.d3 Bd3 52.a6 g3 53.Kf3 c5 54.Kg2 Rf6 55.Kh3 Rf4 56.Kg2 Bf5 57.Kh1 Be4) 51...c5 (51...Rf6 52.Kh1 Bd3 53.Kg2 Be4 54.Kh2 Rf2) 52.Kf2 c4 53.Kg2 (53.a6 g3 54.Kg2 Bc6 55.Kh3 Rg6 56.Kh4 Nf4 57.d3 Rg4) 53...c3 54.dc3 (54.Kf2 cd2 55.Kf1 d1Q 56.Kg2 Qg1) 54...Nc3 (54...Rf6 55.c4 Bc6 56.Kh2 Rf2) 55.Kg3 (55.Kf2 h4 56.Kg2 Rf6 57.Kg1 Ne2 58.Kg2 Bc6 59.Kh2 Rf2) 55...Nd1 (55...Rf6 56.Kh4 Ne4 57.Kh5 Be2 58.a6 Ra6 59.Kh4 Rh6) 56.Kh4 (56.Kf4 Re3 57.Kf5 g3 58.Kg5 g2 59.a6 g1Q 60.Kf6 Qg7 61.Kf5 Nc3 62.Kf4 Qe5) 56...Re5 (56...Re3 57.a6 g3 58.Kh3 Ba6 59.Kh4 g2 60.Kg5 g1Q 61.Kf6 Qg7 62.Kf5 Nc3 63.Kf4 Qe5) 57.Kg3 Rf5 58.Kg2 (58.Kh4 Ne3 59.Kg3 Kf7 60.Kh4 Kg6 61.Kg3 Rf3 62.Kh2 g3 63.Kh3 Kg5 64.a6 Bd7) 58...Bd7 (58...h4 59.Kg1 Rf1 60.Kg2 Ne3 61.Kh2 Bc6 62.a6 Rh1) 59.Kg3 (59.Kh2 h4 60.a6 Rf2 61.Kh1 h3 62.Kg1 h2 63.Kh1 Bc6) 59...Ne3 (59...Nc3 60.a6 Be8 61.Kh4 Rf2 62.Kg3 Ne4 63.Kh4 Rh2) 60.Kh2 (60.a6 Kf7 61.Kh4 Kg6 62.Kg3 Rf3 63.Kh2 g3 64.Kg1 Rf1) 60...Nf1 (60...h4 61.a6 g3 62.Kg1 Rf1) 61.Kg1 (61.Kg2 h4 62.a6 h3 63.Kh1 Bc6 64.Kg1 h2) 61...h4 62.Kg2 (62.a6 Ne3 63.Kh1 Rf1 64.Kh2 g3) 62...h3 63.Kg1 Ne3 (63...h2 64.Kg2 Bc6) 64.Kh2 Rf2 (64...Rf3 65.a6 g3 66.Kg1 Rf1) 65.Kg1 (65.Kg3 Rf3 66.Kh4 h2 67.a6 h1Q 68.Kg5 Rf5 69.Kg6 Qc6) 65...Rf3 (65...g3 66.a6 Rf1) 66.Kh2 (66.a6 g3 67.Kh1 Rf1) 66...Nf1 (66...g3 67.Kg1 Rf1) 67.Kg1 Ng3 (67...Rf5 68.a6 h2 69.Kg2 Bc6) 68.Kh2 (68.a6 Ne2 69.Kh1 Bc6 70.Kh2 Rf2) 68...Ne4 (68...Ne2 69.Kh1 Bc6 70.Kh2 Rf2) 69.Kg1 (69.a6 Rf2 70.Kg1 g3 71.Kh1 Rf1) 69...Rg3 70.Kh2 (70.Kh1 Nf2 71.Kh2 Rg2) 70...Rg2 71.Kh1 Bc6 (71...Ng3) 72.a6 Ra2 (72...Ng3) 73.Kg1 h2 74.Kh1 Nf2 (74...Nc5) 75.Kh2 Nh3 (75...Ne4 76.Kg1 Rf2 77.Kh1 Ng5 78.Kg1 Nh3) 76.Kg3 Bd7 77.Kh4 Ra6 (77...Ra3 78.Kh5 Kf7 79.Kh4 g3 80.Kh5 Ra4 81.Kh6 Rh4) 78.Kg3 Ng5 (78...Ra3 79.Kh4 g3 80.Kh5 g2 81.Kh4 g1Q 82.Kh5 Qg5) 79.Kg2 (79.Kf4 Rg6 80.Ke3 g3 81.Kd3 g2 82.Kc3 g1Q 83.Kc2 Rc6 84.Kb2 Qd4 85.Kb1 Qf2 86.Ka1 Rc1) 79...Rh6 (79...Rf6 80.Kg3 Ne4 81.Kh2 Rf2 82.Kg1 Bc6 83.Kh1 Ng5 84.Kg1 Nh3) 80.Kg3 (80.Kf2 Rf6 81.Ke3 g3 82.Kd4 g2 83.Kc4 g1Q 84.Kd3 Rc6 85.Ke2 Bf5 86.Kd2 Rc2) 80...a6 (80...Rf6 81.Kg2 a6 82.Kg3 Ne4 83.Kh2 Rf2 84.Kg1 Bc6 85.Kh1 Ng5 86.Kg1 Nh3) 81.Kg2 (81.Kf4 g3! 82.Ke3 Rc6 83.Ke2 g2 84.Kf2 Rc2 85.Ke3 g1Q 86.Kf4 Rc4 87.Ke5 Qd4) 81...a5 (81...Rf6 82.Kg3 Ne4 83.Kg2 g3 84.Kg1 Bh3 85.Kh1 Rf1) 82.Kg3 (82.Kf2 a4 83.Ke3 a3 84.Kd4 a2 85.Ke3 a1Q 86.Kd3 Rd6 87.Kc4 Qb2 88.Kc5 Qd4) 82...a4 83.Kf4 (83.Kf2 a3 84.Ke3 a2 85.Kd4 a1Q 86.Kc4 Rc6 87.Kb3 Rc5 88.Kb4 Qc3) 83...Nh3 84.Kg3 (84.Ke3 a3 85.Kd4 a2 86.Kd3 a1Q 87.Kc2 Bb5 88.Kb3 Rc6 89.Kb4 Qa4) 84...Ng1 (84...a3 85.Kg2 a2 86.Kf1 a1R 87.Kg2 Rg1 88.Kh2 g3) 85.Kg2 (85.Kf2 a3 86.Kg1 Rh3 87.Kf2 a2 88.Kg1 a1Q 89.Kf2 Bb5 90.Kg2 Qf1) 85...Ne2 86.Kf2 Nc3 87.Ke3 (87.Kg3 a3 88.Kf2 a2 89.Ke3 a1Q 90.Kd4 Qd1 91.Kc3 Rb6 92.Kc4 Be6 93.Kc5 Qd6) 87...a3 88.Kd3 (88.Kd2 a2 89.Kc3 a1Q 90.Kc4 Be6 91.Kd3 Rh3 92.Ke4 Qc3 93.Kf4 Qe3) 88...Nb5 89.Kc4 (89.Ke2 Rh2 90.Kd3 a2 91.Kc4 a1Q 92.Kb4 Rh3 93.Kc5 Qd4) 89...a2 90.Kb3 (90.Kd3 Rh3 91.Kd2 a1Q 92.Ke2 Rh2 93.Kd3 Qd4) 90...a1Q 91.Kb4 (91.Kc2 Rh2 92.Kb3 Qc3 93.Ka4 Ra2) 91...Qa3 (91...Qc3 92.Ka4 Ra6) 92.Kc4 Rc6 (92...Qc3 93.Kd5 Qd4) 93.Kd5 (93.Kb5 Qc3 94.Ka4 Rb6) 93...Nc3 (93...Qd3 94.Ke5 Qd4) 94.Kd4 Qc1 95.Kd3 Qd1 (95...Bf5 96.Kd4 Qf4) 96.Ke3 Qe2 97.Kf4 Rc4 (97...Rh6 98.Kg3 Qf3) 98.Kg3 (98.Kg5 Qe5 99.Kg6 Rc6) 98...Qf3 (98...Rc5 99.Kh4 Qf2) 99.Kh4 Qh3 100.Kg5 Ne2 (100...Ne4 101.Kg6 Rc6) 101.Kf6 Qf3 102.Kg5 (102.Ke7 Qf7 103.Kd6 Qe6) 102...Nd4 (102...Be8 103.Kh6 Qf6) 103.Kh5 (103.Kh4 Rc6 104.Kg5 g3 105.Kh4 Qg4) 103...Qf5 (103...Rc5 104.Kh6 Qf6) 104.Kh4 Qh7 (104...Rc2 105.Kg3 Qf2) 105.Kg3 ½–½. afsharian – reyoBonurB, lichess.org, 2018.

4.b5 Bg7 5.e3 b6 6.Qf3 c6 7.a4 Bb7 8.Qd1 c5 9.Nf3 e4 10.Nh4 (10.Ng5 Qe7 11.Nh3 a6=) 10...d6 (10...Nh6!?=+) 11.d3= f5?? (better 11...Kf7=) 12.Bg7+– Qh4 13.Bh8 Nf6 14.g3 Qh6 15.Bf6 (15.Bg2 Nbd7+–) 15...Nd7 (15...ed3 16.Rg1 Nd7 17.Qd3 Nf6 18.Qd6+–) 16.Bb2 (better 16.Bh4+–) 16...0–0–0 (16...ed3 17.Qd3 Bh1 18.Qd6 Qh2 19.Qe6 Kd8+–) 17.Bg2 (17.d4 cd4 18.Qd4 Nc5+–) 17...Qf8 (17...Ne5 18.de4 Nc4 19.Bf6+–) 18.de4 fe4 (18...Be4 19.Be4 fe4 20.Qd5+–) 19.0–0 Nf6 (19...Ne5 20.Be5 de5 21.Qc2+–) 20.Bh3 Kb8 21.Bf6 (21.a5!? Nd7+–) 21...Qf6 22.Nd2 d5 23.Qe2 (23.cd5 Rd5 24.Ne4 Qf8+–) 23...d4 (23...Qb2 24.cd5 Bd5 25.Rfd1+–) 24.ed4 cd4 (24...Qd4 25.Rad1 Re8 26.Rfe1+–) 25.Ne4 Be4 (25...Qe5 26.Bg2 d3+–) 26.Qe4 d3 27.Bg2 Kc8 28.Qb7 1–0. GuestMPBT – GuestFFHK, freechess.org, 2017.

4.b5 Bg7 5.e3 Ne7 6.Nf3 0–0 7.Be2 d5 8.Nc3 (8.d4 e4 9.Nfd2 f5=) 8...d4 9.ed4 (9.Ne4 d3 10.Bf1 f5=+) 9...ed4=+ 10.Ne4 (10.Nd5 Nd5 11.cd5 d3 12.Bd3 Re8 13.Be2 Qd5=) 10...d3–/+ 11.Bf1 Nf5 (better 11...Re8!? 12.Bf6 Nec6 13.Bd8 Re4 14.Be2 Re2 15.Kf1 Nd8=+) 12.Qb3 (12.Qb1 Nd6 13.Bd3 Bg4+–) 12...Kh8 (12...Re8!? 13.Bd3 Nd6 14.c5 Be6=) 13.Bd3+– a6 14.a4 (14.0–0 ab5 15.cb5 Nd7+–) 14...ab5 15.ab5 Ra1 16.Ba1 Be6 (16...Nd7 17.0–0+–) 17.0–0 Nd7 18.Nd4 (18.Re1 Ne5 19.Bf1 Re8+–) 18...Nd4 19.Bd4 Ne5 (19...f5 20.Nc5 Nc5 21.Bc5+–) 20.Qc3 Nd3 21.Qd3 Bg8 (21...Bf5 22.Re1+–) 22.Qc3+– c6 (22...Be6 23.d3+–) 23.Ra1 (23.Rb1 Be6+–) 23...cb5 24.cb5 Qd5 (better 24...Bd5 25.d3 Kg8+–) 25.Bf6?? (25.Nf6 Qc4 26.Qb2+– (26.Ng8? Qd4 27.Rf1 Kg8–+)) 25...Be6?? (better 25...Rf6 26.Nf6 Qb5+=) 26.Bg7+– Kg8 27.Nf6 (27.Bf8 Qd7 28.Ra8 Qc7 29.Qc7 Bf7 30.Bh6 Be8 31.Re8) 27...Rf6+– 28.Qf6 Qf5 29.Ra8 Bc8 30.Qf5 gf5 31.Bh6 Kf7 32.Rc8 Kg6 33.Bf4 h5 34.Rc7 b6 35.Rc6 Kf7 36.Rb6 Ke7 37.Rh6 Kd7 (37...Ke8 38.Rh7 Kf8 39.Bh6 Kg8 40.Rg7 Kf8 41.b6 Ke8 42.b7 Kd8 43.b8Q) 38.b6 Kc8 (38...Ke7 39.Bd6 Kd7 40.b7 f4 41.b8Q Kc6 42.Qc7 Kd5 43.d3 f3 44.Qc5) 39.Rh7 h4 (39...Kd8 40.b7 h4 41.b8Q) 40.b7 (40.b7 Kd8 41.b8Q) 1–0. GuestKKXW – GuestTFYT, freechess.org, 2017.

4.c5 c6 5.a4 (5.e3 a5=) 5...b6 (5...d6 6.cd6 Bd6 7.b5=+) 6.Qc2 (6.d4 ed4 7.Bd4 d5=) 6...Ne7 (better 6...Na6!? 7.Ba3 bc5 8.bc5 Qa5–/+) 7.d4= Qc7 (7...Nd5 8.de5 Nb4 9.Qb3 Bc5 10.ef6=+) 8.e4 d6 9.Nc3 (better 9.cd6!? Qd6 10.de5 fe5 11.Nf3 Qb4 12.Nbd2+–) 9...ed4=+ 10.Nce2? (better 10.cb6!? Qb6 11.Na2=+) 10...bc5–+ 11.bc5 Qa5 12.Kd1 Qc5 (12...dc5 13.Nc1 Be6 14.Nb3 Bb3 15.Qb3–+) 13.Qc5? (better 13.Qd2!? Qc4 14.Qd4 Qb3 15.Ke1–/+) 13...dc5–+ 14.Nf3 (14.Rc1 Na6–+) 14...Be6 15.Rc1 (15.Nd2 Bh6–+) 15...Nd7 16.Ba3 (16.Nd2 Rb8 17.Ba3 Bh6–+) 16...Bb3 17.Kd2? (17.Ke1 Ba4 18.Bc5 Nc5 19.Rc5 Nd5–+) 17...Ba4 (17...Bh6 18.Ke1 Bc1 19.Nc1 Ba4 20.Nd3–+) 18.Bc5 (18.Rc5 Nc5 19.Bc5 Bh6 20.Kd3 Bb5 21.Kd4 a5–+) 18...Nc5 (better 18...Bh6 19.Ng5 Bg5 20.f4 Nc5 21.Rc5 Bh6–+) 19.Rc5 Rb8 (better 19...Nf5! 20.Rc4 Bb5 21.Ned4 Bc4 22.Bc4 Nd4 23.Nd4–+) 20.Ned4 Bh6 (better 20...Nc8!? 21.Rc4 Bb4 22.Ke3 c5–+) 21.Kc3=+ Kf7?? (better 21...Bd1=+) 22.Bc4+– Kg7 (22...Kf8 23.Ra1 Bb5 24.Bb5 cb5 25.Nb5+–) 23.Ra1 Bb5 24.Bb5 (24.Ra7 Kf8+–) 24...cb5 25.Ra7 (25.Rb5?! Rhc8 26.Kd3 Rb5 27.Nb5 Nc6+=; 25.Nb5?! Rhc8 26.Nc7 Rb7 27.Ne6 Kg8+–) 25...b4 (25...Rhe8 26.Rb5 Rb5 27.Nb5+–) 26.Kb3 Kf8 27.Rcc7 Re8 28.Ne6 Kg8?? (28...Kf7 29.Nfd4 f5 30.Nd8 Kf6 31.Ra6 Kg7 32.ef5 Rd8 33.Re7 Kg8+–) 29.Re7 Re7 30.Re7 Bf8 31.Re8 (31.Rc7 g5 32.e5 h6 33.ef6 Rh7 34.Rh7 Kh7 35.Nf8 Kg8 36.Nd7 Kh7 37.f7 Kg6 38.Nfe5 Kf5 39.f8Q Ke6 40.Kc4 b3 41.Qf6) 31...Kf7 32.Rf8 (32.Nf8?! Ke8 33.Ne6 Kf7+–) 32...Rf8 33.Nf8 Kf8 34.Kb4 Ke7 35.Kc5 Ke6 36.Kd4 h5 37.h4 Kd6 38.Nd2 g5 (38...Ke7 39.f4+–) 39.hg5 fg5 40.Nf3 g4 41.Nh4 Ke6 42.f3 (42.f3 gf3 43.gf3+–) 1–0. afsharian – opelvivaro, lichess.org, 2018.

4.e3 Bb4 5.Nc3 a5 (5...Ne7 6.Nf3=+) 6.a3 Bf8 (6...Bc3 7.Bc3 Nc6 8.Nf3=) 7.Nf3= c5 (7...Ne7 8.d4=) 8.Be2 Bg7 (8...Nc6 9.0–0=) 9.0–0 (9.d4 cd4 10.ed4 d6+=) 9...Ne7 (9...f5 10.d4 e4 11.Nd2=) 10.Nb5 (10.d4!?+=) 10...0–0 11.Nh4 (11.d4 d6=) 11...d6 (11...d5 12.Qc2=+) 12.f4 (12.d4 Nbc6=+) 12...d5 (12...Nbc6 13.d4=+) 13.fe5 (better 13.cd5 Nd5 14.f5=) 13...Bd7?? (13...fe5 14.Rf8 Kf8 15.cd5 A) 15...Qd5? 16.Nc7 Qe4 17.Qf1 (17.Na8?! Qh4 18.Qf1 Ke8+–) 17...Nf5 18.Nf5 (18.Na8?! Qh4 19.g4 Qg5+–) 18...Bf5 19.Na8+–; B) 15...Nd5=+) 14.ef6+– Bf6 (14...Bb5 15.cb5 (15.fg7?! Rf1 16.Qf1 Bc4+–; 15.fe7?! Rf1 16.Qf1 Qe7 17.Bg7 Kg7+–) 15...Bh8 16.fe7 Rf1 17.Qf1 Qe7 18.Bh8 Kh8 19.Qf3+–) 15.Rf6 Rf6 16.Bf6 Bb5 17.cb5 b6 (17...Qd6 18.Bc3+–) 18.Qc2 (18.Bg4 Qd6 19.Qf3 Nbc6+–) 18...Nd7 (18...Qd6 19.Bb2 Nd7 20.Qc3+–) 19.Bg5 (19.Bb2 Kf7+–) 19...Qe8 (19...Ne5 20.Rf1 Rc8 21.Bf4+–) 20.Rf1 Nf5 (20...Ne5+–) 21.Nf5 gf5 22.Qf5 Qf7 (22...Ra7 23.Qd5 Kg7+–) 23.Qf7 Kh8 24.Qd7 (24.Bd3 Rf8 25.Qh7) 24...Rg8 (24...d4 25.Bf6 Kg8 26.Qg7) 25.Bf6 Rg7 26.Qg7 1–0. GuestFJQJ – Xali, freechess.org, 2016.

4.e3 Bb4 5.Nc3 Nc6 6.Nd5 Bc5 (6...Ba5 7.Nf3=+) 7.Nf3 Nce7 8.Be2 c6 9.Nf6? (better 9.Nc3 d5 10.d4 ed4 11.ed4=) 9...Nf6–+ 10.Be5 Rf8 11.d4 (11.0–0 d6 12.Bf4 Ne4–+) 11...Ba3 (11...Bb4 12.Kf1–+) 12.Qb3 (12.0–0!?–+) 12...Qa5 13.Kf1 Ne4 14.g3?? (better 14.Bd3 Rf3! 15.Be4–+) 14...Rf3! 15.Kg2 (15.Bf3 Nd2 Double attack) 15...Rf2 16.Kh3 Re2 17.Rhf1 Rf2 (better 17...d5 18.g4 h5 19.Rf4–+) 18.Rf2 Nf2 19.Kg2 Nf5 (better 19...Qd2 20.Kf3 d5 21.Qa3–+) 20.c5 Qd2 (better 20...d5 21.cd6 Bd6 22.Bd6 Qd2 23.Qg8 Kd7–+) 21.Qg8= Ke7 22.Bd6?? (better 22.Qh7 Ke8 23.Qg8 Ke7 24.Qh7 Kf8 25.Qh8 Kf7 26.Qf6 Ke8 27.Qh8 Ke7 28.Qf6 Ke8 29.Qh8 Ke7 30.Qf6 Ke8=) 22...Nd6–+ 23.cd6 Kd6 24.Qg7 (24.Qf8 Kc7 25.Qf2 Qf2 26.Kf2–+) 24...Ng4 25.Kh3 Qe3 (25...Qh2 26.Kg4 Qh5 27.Kf4 Qf5) 26.Kg4–+ Qe4 27.Kh3 Kc7 28.Qh7 (28.Rf1 Kb8 29.g4 d6–+) 28...Qd4 (better 28...Be7 29.Qe7 Qe7 30.g4 Qe3 31.Kg2–+) 29.Qg6 (29.Rf1 Kb6 30.Qg6 d5 31.Kg2 Qb2 32.Rf2 Bh3 33.Kh3 Qf2 34.Qh7–+) 29...Qa1 30.Qd3 Qa2 31.Qe3 d6 32.Kh4 (32.g4 Bg4! 33.Kg3 Rg8 34.Qe2 Be2 35.Kf4 Rg4 36.Ke3 Bc5) 32...Qc4 (32...Bd7 33.Qc3 Qh2 34.Kg5 Rg8 35.Qg7 Bc1 36.Kf6 Qf2 37.Ke7 Rg7) 33.Kh5 Qd5 (33...Qf7 34.Kh4 Qh7 35.Kg5 Qg7 36.Kh5 Bg4 37.Kh4 Rh8 38.Qh6 Rh6) 34.Kh4–+ Bd7 35.Qg5 Rh8 36.Qh5 Qh5 (36...Rh5) 0–1. Agiant – daljit1983, lichess.org, 2018.

4.e3 f5 5.Be5+– Bb4?? (better 5...Nf6 6.Nc3 Bg7+–) 6.Bh8+– Qh4 (6...Nf6 7.Qb3 c5 8.Qb2+–) 7.Nf3 Qh5 (7...Qd8 8.a3 Ba5 9.Bc3+–) 8.Be2 Nh6 9.h3 g5 (9...b6 10.a3 Bd6 11.d4+–) 10.Qb3 c5 (10...Bf8 11.Nc3 c6 12.Ne5+–) 11.a3 (better 11.Nc3 Bc3 12.Qc3 Nf7+–) 11...a5 (11...Ba5+–) 12.ab4 cb4 13.Ne5 d6 (13...g4+–) 14.Bh5 Kf8 15.Nf3 Kg8 16.Bf6 (16.Qb2 a4 17.Qg7) 16...g4 17.hg4 (17.c5 Kf8 18.Ng5 d5 19.Qd5 a4 20.Nh7) 17...fg4 18.Nh4 (18.Qd3 Bf5 19.Qd5 Kf8 20.Qd6 Kg8 21.Qd8) 18...g3 19.c5 Kf8 20.cd6 (20.Qd5 Nc6 21.Qg5 Nf5 22.Nf5 gf2 23.Kf2 Bf5 24.Qg7) 20...Nd7 21.Bg5 Nc5 (21...gf2 22.Kf1 Kg7 23.Qb2 Kg8 24.Bh6 Ne5 25.Qe5 a4 26.Qg7) 22.Qd5 (22.Bh6) 22...b6 (22...Ne6 23.Bh6 Kg8 24.Bf7 Kf7 25.Qh5 Kg8 26.Qe8 Nf8 27.Qf8) 23.Qa8 (23.Bh6) 23...Nd3 24.Ke2 (24.Kf1 Kg7 25.Qa7 Kg8 26.Bh6 Bd7 27.Qb8 Bc8 28.Qc8) 24...Nb2 (24...Kg7 25.Qa7 Bd7 26.Qd7 Kh8 27.Bf6 Kg8 28.Qg7) 25.Bh6 Kg8 26.Qc8 1–0. Markzela (1690) – ANDREka, lichess.org, 2020.

4.Nf3 Bb4 5.e3 d5 6.a3 Bd6 (6...Be7 7.cd5 Qd5 8.d4=) 7.cd5= Qe7 (7...Ne7 8.Nc3=) 8.Be2 (8.Nc3 c5+=) 8...Nd7 (8...e4 9.Nd4+=) 9.0–0 b6 (9...Nh6 10.Nc3+=) 10.Nc3 Bb7 11.d3 (11.Qa4 a6+=) 11...0–0–0 (11...c6 12.dc6 Bc6 13.Ne4+=) 12.Nb5 (12.Qc2 Kb8+–) 12...Kb8 13.a4 (13.Qa4 a6 14.Nd6 Qd6+–) 13...Bd5+= 14.a5 Bc6 (14...Bc5 15.Qa4 e4 16.de4 Qe4 17.Bd4+–) 15.d4 (15.Nd6 Qd6 16.Ba3 Qd5+–) 15...ed4 (15...Bb5 16.Bb5 e4 17.Nd2+–) 16.Na7 (better 16.Nfd4!? Be4 17.ab6 (17.Nd6?! Qd6 18.ab6 Qb6+–) 17...cb6 18.Ra7+–) 16...Ka7= 17.ab6 (better 17.Nd4 Bb7 18.ab6 Kb8 19.bc7 Bc7 20.Qa4=) 17...Kb6?? (better 17...Kb8 18.bc7 Bc7 19.Nd4 Bb7=) 18.Bd4 (18.Qd4 Bc5 19.Qc4 Nb8 20.Bf6 Kb7 21.Be7 Ne7 22.Qc5 Nc8+–) 18...Kb7 19.Ba6 Kb8 20.Qb3 Nb6? (20...Bb4 21.Bc3 Bd5 22.Qd5 Nc5+–) 21.Bb6 cb6 (21...Bb4 22.Ba5 Bd5+–) 22.Qb6 Bb7 (22...Qb7 23.Bb7 Bh2 24.Kh2 Bb7 25.Qd8 Bc8 26.Rfb1) 23.Rfb1 (23.Bb7 Ba3 24.Ra3 Qa3 25.Bd5 Kc8 26.Qb7) 23...Rd7 (23...Bc5 24.Qa5 Rd1 25.Rd1 Bb4 26.Rd8 Bc8 27.Qb6 Qb7 28.Qb7) 24.Bb5 (24.Nd4 Bh2 25.Kh1 Bg1 26.Qa7 Ka7 27.Nc6 Bc6 28.Bc4 Qa3 29.Ra3 Ba4 30.Ra4) 24...Rc7 25.Nd4?? (25.Bc6 Ba3 26.Qa6 Rc6 27.Qc6 Qc7+–) 25...Kc8?? (25...Bc5 26.Qa5 Bd4 27.ed4+–) 26.Rc1?? (26.Ba6 Qe5 27.Bb7 Kd7+–) 26...f5?? (better 26...Qe5 27.Nf3 Qe7+=) 27.Nc6 Qe4 (27...Qf8 28.Na5 Bc5 29.Qe6 Kb8 30.Nb7 Rb7+–) 28.Na7 (better 28.Ra8! Kd7 29.Rd8 Ke6 30.Rd6 Kf7 31.Qc7 Ne7 32.Qb7+–) 28...Kb8 29.f3 (29.Bc6 Bh2 30.Kh2 Qe5 31.g3+–) 29...Rc1?? (better 29...Qd5 30.Nc6 Kc8+–) 30.Rc1+– Qe5 (30...Qe3 31.Qe3 Ne7+–) 31.Rc8 1–0. GuestLBTM – GuestGYFT, freechess.org, 2017.

3.c4 e6

4.a3 a5 5.b5 b6 6.e3 Bb7 7.Nf3 d6 8.Be2 Nd7 9.0–0 Bg7 10.d4 Ne7 11.Nc3 0–0 12.d5 e5 13.e4 h6 14.Kh1 f5 15.ef5 Nf5 16.Ne4 Nf6 17.Nfd2 Nd7 18.Bg4 Qh4 19.Bf5 (19.Qe2 Nc5+=) 19...Rf5= 20.Ng3 Rf7 21.Nf3?? (21.Qc2 Kh7=) 21...Qe7?? (better is 21...Qc4 22.Rc1 Qb5 23.Rc7 Bd5–+ (23...Qb2?! 24.Rb7 Qa3 25.Qb1–/+)) 22.Bc1 Raf8 23.Ra2 Nf6 Black intends e4 24.Re2+= Ng4 25.h3 Nf6 26.Nh4 Kh7?? 27.Qc2 e4 28.Ne4 Ne4 29.Re4 Qf6 30.Re6?? Qh4+= 31.Rg6 Kh8 32.Rg4? Qh5 33.f3? Bc8–+ 34.Qg6 Bg4 35.fg4 Qg6 36.Re1 Rf1 37.Rf1 Rf1 38.Kh2 Rc1 39.g5 Be5 40.g3 Qg5 41.h4 (41.c5 Qg3#) 0–1. dtpwaldi – mitica00 (1755), playok.com, 2011.

4.e3 Bb4+= 5.a3 Bf8 6.Nf3 Bg7 7.Be2 Qe7 8.0–0 Nh6 9.d4 0–0 10.Nc3 b6 11.Nb5 d6 12.Qc2 a6 13.Nc3 Bb7 14.Rfe1 (14.d5 Nf7+=) 14...f5 15.d5 e5 16.g3 (16.e4!?+=) 16...Nf7 17.Bf1 h5 (17...Nd7 18.Reb1–/+) 18.Bg2+= Nh6 19.h3 Qf6 20.Ne2 h4 (20...g5 21.h4 gh4 22.Nh4+=) 21.Nh4 g5 22.Nf3 g4 23.Nh4 gh3 24.Bh3 f5 becomes the focus of attention 24...Qg5 25.Bg2 Ng4 26.Rf1 Nd7 27.Rac1 Ndf6 28.Qd3 Ne4 29.Be4+= fe4 30.Qe4 Bf6 31.Kg2 Qh5 32.Qg6 Qg6= 33.Ng6 Rfe8 34.Rh1+/– Kg7 35.Nh4 c6?? 36.e4 Bg5 37.Rc2 Rf8+/– 38.Rf1 Rf6 39.Nf5 Kf7? 40.Nc3 c5 41.Nd1 b5? 42.f3 Nh6 43.Nf2?? Nf5= 44.ef5 Rf5 45.g4 Rf6 46.Ne4 Rg6 47.Ng5 Rg5+= 48.cb5 ab5–/+ 49.Rcf2? Ke7 50.Rd2 Ba6 51.Rb1 Rf8 52.Rf2 Rf7 53.Kg3 Rg6 54.Bc1 Rgf6?? 55.Bg5+– e4?? 56.Bf6 Rf6 57.f4. Fournier,Frederic (1610) – freesoul, Active, 2007.

3.c4 Bg7

4.a3 e6 5.e3 Qe7 (5...Ne7 6.Nf3+=) 6.Nf3 f5 (6...Nh6 7.Be2+=) 7.Bg7+/– Qg7 8.Nc3 Nc6 9.Be2 d5 (9...e5!?+/–) 10.cd5+– ed5 11.Nd5 Be6 12.Nc3 0–0–0 13.d4 f4 14.Qa4 fe3 15.fe3 Qh6 16.b5 Qe3 (better is 16...Nce7 17.Qa7 Qe3+–) 17.bc6?? (better is 17.Nd1 Rd4 18.Ne3 Ra4 19.bc6 bc6 20.Ng5+–) 17...Qc3+= 18.Kf1?? (18.Kf2 Nf6 19.cb7 Kb8 20.d5 Bd5 21.Rhc1 Ne4 22.Kf1–/+) 18...Qa1–+ 19.Kf2 (19.Ne1 Ne7 20.cb7 Kb8–+) 19...Qh1 20.cb7 (20.Qa7 bc6 21.Qa8 Kd7 22.Ne5 Ke8 23.Qc6 Bd7 24.Nd7 Rd7 25.Bb5 Qh2 26.Qd7 Kf8 27.Qe8 Kg7 28.Qd7 Kh6 29.Kf3–+) 20...Kb8 21.Ne5 Rd6 22.Qe8 Kb7 23.Bf3 Bd5?? 24.Qb5?? Kc8–+ 25.Bd5 Rd5 26.Qd5= Nf6?? 27.Qa8 1–0. Fournier,Frederic (1855) – jorgebenitez, Active, 2008.

4.a4 b6 5.b5 a6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 e5 (8...d6 9.Nc3+=) 9.e3 (9.h4 d6+=) 9...g5 (9...d6!?+=) 10.Be2 h5 (10...d6 11.0–0+–) 11.0–0 h4 12.g3 (12.h3 d6+–) 12...hg3 (better 12...d6!?+–) 13.fg3+– d6 (better 13...Nh6 14.Nc3 Bb7+–) 14.Qc2 (14.Ng5 Nh6 (worse 14...fg5 15.Bh5 Rh5 16.Qh5 Kd7 17.Rf7 Ne7 18.Qg5+–) 15.Nf3 Bh3+–) 14...Rh6? (14...Ne7!?+=) 15.d4 (15.Ng5 f5 (15...fg5?? 16.Bh5 Kd7 17.Qf5 Re6 18.Qf7 Ne7 19.Bg4+–) 16.Nf3 Ne7+–) 15...g4 (15...Be6 16.Nc3+–) 16.Nh4+– ed4 (16...Ne7 17.e4+–) 17.ed4 (better 17.Bd4 Ne7 18.Nd2+–) 17...Qd7? (better 17...Ne7+–) 18.Nf5 Rh5 (18...Kd8 19.Nc3 Qf7+–) 19.Bg4 Rg5 (19...Rf5 20.Bf5 Qd8+–) 20.Ng7 Qg7 21.Bc8 Nh6 (21...Nd7 22.Re1 Ne7 23.Nc3+–) 22.Qe4 (better 22.Nc3 Kd8 23.Be6 Qe7+–) 22...Kf8 (22...Qe7 23.Nc3 Kd8 24.Be6+–) 23.d5 (better 23.Qa8 Qe7 24.Nc3 d5 25.Qb8 dc4 26.Be6 Kg7+–) 23...Nd7 (23...Ng8+–) 24.Bd7 Qd7 25.Bf6 (better 25.Rf6 Nf7 26.Qh7+–) 25...Rg8 (25...Rf5 26.Rf5 Nf5+–) 26.Bg5 Nf7 (26...Kg7 27.Bh6 Kh8 28.Qh4 Re8 29.Bg5 Kg8 30.Bf6 Qg7 31.Bg7 Kg7 32.Qg5 Kh8 33.Rf7 Re1 34.Kf2 Rf1 35.Kf1 c6 36.Qg7) 27.Bh6 Rg7 28.Qe6 (28.Qg6 Ke7 29.Qg7 Qe8 30.Re1 Kd7 31.Re8 Ke8 32.Qf8 Kd7 33.Qf7 Kc8 34.Qe8 Kb7 35.Bf8 Ka7 36.Qc8 c6 37.dc6 d5 38.Qb7) 28...Qe6 29.de6 Kg8 30.Bg7 (30.Bg7 Kg7 31.e7 Nh6 32.e8Q c5 33.Qe7 Kh8 34.Rf8 Ng8 35.Qf7 d5 36.Rg8) 1–0. retiponziani (1770) – Chicky100, ChessWorld.net, 2014.

4.a4 b6 5.b5 Bb7 6.e3 a6 7.Nc3 (7.d4 e6=) 7...a5 (7...ab5 8.ab5 Ra1 9.Qa1=) 8.Nf3 d6 (8...f5 9.d4+=) 9.Be2+– e6 (9...Qd7 10.0–0+–) 10.0–0 (10.Nd4 Qd7 11.Bf3 Bf3 12.Qf3 Ra7+–) 10...Qd7 (10...Ne7 11.Qb3+–) 11.d4 Ne7 12.Nd2 0–0 13.Bf3 Bf3 14.Qf3 (14.gf3?! e5=) 14...d5 (14...Ra7!?+=) 15.Rac1 (15.Ba3!? Rd8+–) 15...Ra7 16.Rfd1 Kh8 (16...Rf7 17.Ba3+–) 17.e4 (17.Ba3 dc4 18.Nc4 Rd8+–) 17...c6 (17...de4 18.Nde4 f5 19.Ng5+–) 18.bc6 (18.ed5 cd5 19.Ba3 Rc8 20.Be7 Qe7 21.cd5 Rd7+–) 18...Nbc6+– 19.cd5 Nd4 20.Qd3 (20.Qe3 e5+–) 20...e5 (20...f5 21.Nc4+=) 21.Nb5 Nb5 22.ab5 Rc8 23.Ba3 White prepares the advance d6 23...Rac7 (better 23...Rc1 24.Rc1 Bf8+–) 24.Be7?? (better 24.Rc7 Qc7 25.Nc4+–) 24...Rc1–+ 25.Rc1 Rc1 26.Nf1 Qe7 27.d6 (27.h3 Qb4 28.Qe2 Qe1 29.Qe1 Re1–+) 27...Qd7 28.Qd2 Rc5 29.Ne3 Bf8 30.h3 Qd6 (30...Qb5 31.d7 Be7 32.d8Q Bd8 33.Qd8 Kg7 34.Qe7 Kg8 35.Ng4 Qf1 36.Kf1 Rc1 37.Ke2 Rc2 38.Kd3 Rd2 39.Kd2 h6 40.Nf6 Kh8 41.Qf8; 30...Rb5 31.Qe2–+) 31.Qe2 Qd4 32.Nd5 (32.Qf3 f5! 33.Nf5 gf5 34.Qf5 Bh6 35.Qf6 Bg7–+) 32...Rd5 (32...f5 33.Kh2–+) 33.ed5 Qd5 34.Qc2 Bc5 35.Qc3 (35.Kf1–+) 35...Qd4 (35...Qd1 36.Kh2 Bf2 37.Qc8 Kg7 38.Qb7 Kh6 39.h4 Qg1 40.Kh3 f5 41.Qh7 Kh7 42.h5 Qh1) 36.Qf3 Qf2! 37.Qf2 A pinning theme 37...Bf2 38.Kf2 Kg7 (better 38...a4 39.Ke3 a3 40.Ke4–+) 39.Ke3 Kf7 40.Kd3 Ke6 41.Kc4 Kd6 42.g3 h5 43.h4 f5 44.Kd3 Kc5 45.Kc3 Kb5 46.Kb3 Kc5 47.g4 b5 (better 47...hg4 48.Kc3–+) 48.gf5 gf5 49.Kc3 f4 50.Kd3 a4 51.Ke4 a3 52.Kf5 a2 53.Kg5 a1Q 54.Kh5 Qh1 55.Kg5 f3 56.h5 (56.Kh6 Qh4 57.Kg7 f2 58.Kf7 f1Q 59.Ke8 Qff6 60.Kd7 Qc6) 56...f2 57.Kg4 (57.Kf5 f1R 58.Kg5 Qg1 59.Kh6 Rf6 60.Kh7 Rf7 61.Kh6 Qg7) 57...f1Q 58.Kg5 Qf8 (58...Qf7 59.h6 Qhh5) 59.Kg6 Qh5! 60.Kh5 Decoy to h5 60...e4 61.Kg4 e3 62.Kg3 e2 63.Kg2 e1Q 64.Kh3 (64.Kh2 Qd6 65.Kg2 Qdg3) ½–½. BeepBeepImAJeep (2600) – VISEU_Limao_Verde (1765), lichess.org, 2017.

4.a4 f5?? 5.Nc3 (better 5.Bg7 Nc6 6.Qb3+–) 5...Bc3 (5...e5 6.d4=) 6.Bc3+= Nf6 7.e3 0–0 8.b5 e5 (8...d6 9.d4+=) 9.Nf3 (9.Be5 d6 10.Bf4 Ne4+–) 9...e4 (9...d6 10.Qb3+=) 10.Nd4 d5 11.Be2 dc4 (11...Qd6!?+=) 12.Bc4+– Kh8 13.Qb3 (better 13.d3 a6 14.0–0+–) 13...Qd5?? (better 13...a6+–) 14.Bd5+– c6 15.Bc4 (better 15.bc6 bc6 16.Ne6 Be6 17.Be6 Kg7 18.Qb7 Nbd7 19.Qd7 Kh6 20.Qc6 Rad8+–) 15...cb5 16.ab5 Nbd7 17.Ne6 Nc5 18.Nc5 (18.Nf8 Kg7 19.Bf6 Kf8+–) 18...b6 19.Ne6 (better 19.Bd5 bc5 20.Ba8+–) 19...Re8 20.Bf6 Kg8 21.Ng5 Be6 (21...Re6 22.Be6 Kf8 23.Qb4 Ke8 24.Qe7) 22.Be6 Re6 23.Qe6 Kf8 24.Nh7 1–0. BeepBeepImAJeep (2550) – The_God_Of_Chess (1880), lichess.org, 2017.

4.a4 h5 5.b5 d6= 6.Nc3 a6 (6...e5 7.e3=) 7.e3 ab5 8.ab5 Ra1 9.Qa1 e5 10.Nf3 Ne7 11.Bd3 (11.Be2 g5+=) 11...0–0 (11...f5 12.0–0=) 12.Be2 f5 13.d4 e4 14.Nd2 Nd7 15.0–0 Nf6 16.f3 ef3 (16...Bh6 17.f4+=) 17.Bf3 Ng4 18.Nd1 Re8 19.h3 Nh6 (19...Nf6 20.d5 Rf8 21.e4+=) 20.e4 (20.Nc3 Qd7+=) 20...Kh7 (20...fe4 21.Be4 d5 22.cd5+=) 21.Nf2 (21.Ne3 fe4 22.Ne4 Nef5 23.Nf5 Bf5+=) 21...Neg8 (21...fe4 22.Nfe4 d5 23.Ng5 Kh8 24.h4=) 22.d5 (22.b6 Qg5 23.Bc1 c6+–) 22...Bb2+= 23.Qb2 Qf6 24.Qc2 Bd7 25.Re1 b6 26.Qd3 (26.Rf1 Ne7+=) 26...Nf7+= 27.Nf1 (27.Be2 Ngh6+=) 27...Ne5= 28.Qc3 Nf3 29.Qf3 f4 (29...Qd4 30.Re3 Nf6 31.ef5 Qc4 32.fg6 Kg7 33.Re8 Be8 34.Ne3 Qb5 35.Nd3=) 30.Nd3 (30.Nd2 Ne7+–) 30...Rf8 (better 30...Qd4!? 31.Kh2 Qc4 32.Nf4 Qb5=) 31.e5+– de5 32.Ne5 Bc8 33.Nc6 Kh6 34.Nd2 g5 (34...Bd7 35.Qf2+–) 35.Ne4 Qg6 Black plans g4 36.Qc3 Bf5 37.Nf2 g4 (37...Kh7!? 38.Ne5 Qg7 39.Qf3+–) 38.hg4+– Bg4?? (38...hg4 39.Qh8 Qh7 40.Qe5+–) 39.Ne5 (39.Qh8!? Qh7 40.Ng4 hg4 41.Re6 Rf6 42.Rf6 Nf6 43.Qf6 Kh5 44.Qe5 Kh4 45.Qf4 Kh5+–) 39...Qg5 (39...Qh7 40.Nfg4 hg4 41.Ng4 Kg5+–) 40.Ne4 (better 40.Neg4 Kh7 41.Ne5+–) 40...Qg7+– 41.Ng4 (better 41.c5+–) 41...Qg4?? (better 41...hg4 42.Qd2 Kg6+–) 42.Qf3 (better 42.Qh8 Kg6 43.Nd2+–) 42...Qf3= 43.gf3 Nf6 (43...Ne7 44.Nf2 Ng6 45.Re6+=) 44.Kf2 Ne4 (better 44...Kg6!?+=) 45.fe4+– (45.Re4?! Kg6+=) 45...Re8 (45...Ra8 46.Kf3+–) 46.Kf3 h4 47.Rh1 (47.Kf4 Kh5+–) 47...Kg5 (better 47...Kh5+–) 48.c5 (better 48.Rg1 Kf6 49.Kf4+–) 48...bc5+= 49.b6 (better 49.Rc1!? Ra8 50.Rg1 Kf6 51.Kf4=) 49...cb6–/+ 50.d6 (50.Rg1 Kh5–/+) 50...b5 (50...Rh8 51.Rd1–+) 51.d7? (51.Rb1 b4 52.Rc1–+) 51...Rd8–+ 52.Rg1 (52.Rg1 Kf6 53.Kf4 Rd7 54.Rg5–+; 52.Rd1 b4–+). BeepBeepImAJeep (2565) – VISEU_Limao_Verde (1770), lichess.org, 2017.

4.b5 e6 5.e3 b6 6.Nf3 Ne7 7.Ng5 (7.h4!?+=) 7...Bb7 8.Nf3 0–0 9.Be2 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 d5 13.0–0 Nd7 14.Nc3 Ne5 15.cd5 ed5 16.Nd4 c5? (better is 16...Qd7+=) 17.Ne6+– Qd6 18.Nf8 Kf8 19.d4 Nf7 20.dc5 bc5 21.Qc2 f5 22.Bf3 (22.Rd1 Ne5+–) 22...Ne5 23.Be2?? (23.Na4 c4+–) 23...Ng4?? (23...Nf7 24.Na4 c4+–) 24.Bg4+– fg4 25.Rd1 d4 (25...Be5 26.Ne4! Bh2 27.Kf1 de4 28.Rd6 Bd6 29.Bb2+–) 26.Ne2 (26.Na4 g3 27.Nc5 gh2 28.Kh1 Bd5 29.Bd4 Bd4 30.Rd4 Kf7+–) 26...Qd5?? (better is 26...Be5 27.Ng3 Qd5+–) 27.Nf4 Qe4 (27...Qf5 28.Qf5 Nf5 29.Ne6 Ke7 30.Nc5+– (30.Ng7?! Ng7 31.Rc1 Ne6+–)) 28.Qe4 Be4 29.Ne6 Kf7 (29...Kg8 30.Ng7 Kg7 31.ed4+–) 30.Ng7 (better is 30.Ng5 Kg8 31.Ne4 Nd5+–) 30...Kg7 31.ed4 cd4 (31...Kf7 32.dc5 Bd5 33.Re1+–) 32.Rd4 Bf5 33.Rg4 (better is 33.Rc4 Kf7 34.b6 Bd3+–) 33...Kf7 34.Rf4 Nd5 35.Rd4 Ke6 36.g4 Bc2 37.f3 h5 38.Kf2 Bb3 39.gh5 gh5 40.Re4 Kd6 41.Re5 Kc5 42.Rh5 Kb5 43.Bd4 Kc4 44.Ba7 Kd3 45.Rd5 Bd5 46.h4 Kc4 47.h5 Bg8 48.Ke3 Kd5 49.f4 Ke6 50.Bd4 Kf5 51.Be5 Bh7 52.h6 (52...Kg6 53.Bg7+/–) 1–0. MammaMia – iowegian, Live Game Caissa's Web, 2004.

4.c5 d6 5.e3 Bf5 6.Bb5 (6.d4 e5=) 6...c6 7.Bc4 Qc7 (7...Nd7 8.d4=) 8.b5 (8.Nf3 d5 9.Be2 e5=) 8...d5 (8...dc5 9.Nc3 Nd7=+) 9.b6? (better 9.Be2=) 9...ab6–/+ 10.a4?? (better 10.cb6 Qb6 11.Bb3–+) 10...dc4–+ 11.Nc3 Qe5 (11...Nd7 12.d4 cd3 13.e4–+) 12.a5 (12.Nb5 A) 12...cb5?! 13.Be5 fe5 14.ab5 (worse 14.cb6 b4–/+) 14...Ra1 15.Qa1+=; B) 12...Qb2 13.Nc7 Kd8 14.Na8 bc5–+) 12...Qc5 (worse 12...bc5 13.Nb5 Qb2 14.Nc7 Kf7 15.Na8–+) 13.ab6 (13.Ba3 Qe5 (13...Qa5?! 14.Bb2–+) 14.ab6 Bd3–+) 13...Ra1 14.Qa1 Qb6 15.Na4 (15.e4 Bd7–+) 15...Qb5 (15...Qa6 16.Qd1–+) 16.Nc3 (16.Ne2 Bd3 17.Nf4 Na6 18.Nd3 cd3–+) 16...Qc5 (better 16...Qa6 17.Qd1–+) 17.Qa8 Qd6 18.Ba3 (18.Qb7 Nd7 19.Qa8 Kf7–+) 18...c5 (18...Qc7 19.e4 Bc8 20.Nf3–+) 19.Qa4 (19.Qb7 Nd7–+) 19...Kf7 (better 19...Qc6 20.f3–+) 20.Qc4 Be6 21.Qb5 b6 22.Ne4 (22.d4 Nd7–+) 22...Qc6 23.Qd3 Nd7 24.Nf3 (24.Ne2 Ne5 25.Qc2 Bc4–+) 24...Nh6 (24...Bd5!? 25.Ng3 c4 26.Qe2 Bf3 27.Qf3 Qf3 28.gf3–+) 25.Ng3 Nf5 26.h4 (26.Bb2 Ng3 27.fg3 b5–+) 26...Ng3 27.fg3 c4 (better 27...Ra8–+) 28.Ne5 (28.Qc3–+) 28...Ne5 29.Qe2 b5 (29...Bg4 30.Qf1 Nd3 31.Qd3 cd3 32.0–0–+) 30.h5 (30.0–0 Bg4 31.Qe1–+) 30...Nd3 (30...Bg4 31.hg6 hg6 32.Rh8 Be2 33.Ke2 Qg2 34.Kd1 Qf1 35.Kc2 Bh8 36.e4 Qd3 37.Kc1 Qa3 38.Kd1 Qf3 39.Kc2 Qb3 40.Kc1 Nd3) 31.Kf1 (31.Kf1 Ra8 32.Bb2 Nb2 33.Kg1–+). MARYMARY – le_francais, ChessWorld.net, 2016.

4.d4 e5 5.de5 fe5 6.c5=.

4.d4 f5 5.Nf3 d6 6.Qb3 (6.e3 e5+=) 6...e6 (6...Nf6 7.e3+=) 7.Nbd2 (7.e3 a5+=) 7...g5= 8.g3 (8.e3 g4 9.Ng1 Nc6+=) 8...h5 (8...g4 9.Nh4=) 9.Bg2+= h4 10.Ng1 (10.gh4 g4 11.Ng5 Rh4=) 10...hg3 (10...Nc6 11.e3=) 11.hg3 Rh1 12.Bh1 g4 13.e3 Qf6 (13...Nf6 14.Ne2=) 14.Ne2 Qh6 (14...Ne7 15.Bg2=) 15.0–0–0 (15.Bg2 Ne7=) 15...a6 (15...Ne7 16.Bg2=) 16.Bg2+= Qh2 (16...e5 17.c5 Ne7 18.cd6 cd6 19.de5 de5 20.Nc4+–) 17.Rg1 (better 17.Nf4 Qh7 18.Qa4 c6 19.c5+–) 17...b6?? (better 17...e5+=) 18.Nf4 (better 18.Nf1 Qg1 19.Ng1+–) 18...Qg1–+ 19.Qd1 Qd1 20.Kd1 a5 (better 20...Ra7–+) 21.Ba8=+ ab4 22.Kc2 (22.Nd3 c5–/+) 22...c6 23.c5 (23.Kb3 Ne7 24.Nd3 c5=+) 23...bc5 (23...dc5 24.Nc4 Bd7=+) 24.dc5 (24.Nc4!? Bf8 25.dc5 dc5 26.Be5=+) 24...Bb2–+ 25.Kb2 dc5 26.Nc4 (26.Nd3 Ne7 27.Nc5 Nd7 28.Nd7 Kd7–+) 26...Kd7 (26...Ke7!?–+) 27.Nb6 Kc7 28.Nc4? (better 28.Nc8 e5 29.Ne6 Kc8 30.Nc5–/+) 28...Ne7 (better 28...Nf6 29.a4 Ne4–+) 29.Nd3 Na6 (better 29...Ba6 30.Nce5 Bd3 31.Nd3 Nd7–+) 30.Nde5 Bd7 31.a4 (31.Na5 Nb8–+) 31...Be8 (31...Nd5 32.Kb3–+) 32.a5 Kb8 33.Nd6 Ka8 (33...Nc7 34.Bb7 Nb5 35.Ne8 Kb7 36.Nd3–+) 34.Ne8 Kb7 (34...Nd5 35.Kb3 Nac7 36.Nc7 Nc7 37.Kc4=+) 35.Nd6 (35.Kb3 Ng8–/+) 35...Kc7 (35...Kb8 36.e4–/+) 36.Ndc4 (36.Ne8!? Kd8 37.Ng7–/+) 36...Nd5–+ 37.Kc2 (37.Ng6 Nc3 38.Nf8 e5–+) 37...Nc3 38.Nd3 Ne4 39.Kb3 Kd7 40.Kc2 (40.Nce5 Kd6–+) 40...Nc7 (40...Kc8 41.Nce5–+) 41.Nde5 (41.Nce5 Kd6 42.Kb3 Nb5–+) 41...Ke7 (41...Kc8 42.Nd3–+) 42.Nc6 (42.Nd3 Na6–+) 42...Kd7 (42...Ke8!? 43.N6e5–+) 43.N6e5 Kc8 44.Nd3 Na6 (44...Kb7 45.Kb3–+) 45.Kb3 Kc7 (45...Kd7–+) 46.Kc2 (46.Nf4 Kd7 47.Ne5 Kd6 48.Nc4 Ke7 49.Nd3–+) 46...Kc6 47.Kb3 Kb5 48.Nf4 (48.Nde5 Nb8 49.Nd3 Nc6–+) 48...Nf2 (48...Nc7 49.Nd3–+) 49.Ne6 (49.Nd6 Kc6 50.Nf7 e5 51.Ne5 Kb5–+) 49...Nh1 (better 49...Ne4–+) 50.Nd6 Ka5 51.Nf5 Nf2 (51...Kb5!? 52.Kc2–+) 52.Nd6–/+ Nh1 53.Nc4?? (53.Nf5 Kb5 54.Ng5–+) 53...Kb5–+ 54.Nd6 (54.Ne5 Ng3 55.Kb2 c4–+) 54...Kc6 55.Nf5 (55.Ne4 Kd5 56.N6g5 Ke5–+) 55...Kd5 56.Nf4 Ke4 57.Nh6 Kf3 (57...Ng3 58.Ng4 Nf1 59.Nf2 Kf3 60.N2d3 Nd2 61.Ka4–+) 58.Nh5? (58.Ng4 Kg4 59.Nd3 Nb8–+) 58...Ng3 59.Nf6 Ke3 60.Nhg4?! (60.Kc4–+) 60...Kd4 61.Kb2 (61.Kc2 c4 62.Nd7 Nc5 63.Nc5 Kc5–+) 61...c4 62.Nh2 (62.Nd7 Nc5 63.Nc5 Kc5–+) 62...c3 63.Kc2 (63.Kb1 b3 64.Nf3 Ke3 65.Nd5 Kf3 66.Nc3 Nc5–+) 63...Nc5 (63...Kc4 64.Nfg4 b3 65.Kd1 c2 66.Kd2 Ne4 67.Ke3 c1Q 68.Ke4 Nc5 69.Kf3 b2 70.Ne3 Kd4 71.Nf5 Kc3–+) 64.Nf3 Kc4 65.Ne5 Kb5 66.Nd5 (66.Nd3 Nd3 67.Kd3–+) 66...Na4 (better 66...Ne2 67.Nb4 Kb4 68.Nc6 Kc4 69.Ne5 Kd4 70.Nf3 Ke3–+) 67.Nd3= Ne4 68.N5b4 Kc4 69.Na2 Kd4 70.Nc3 Nac3 71.Nb2 Ne2 72.Nd1 Nf4 73.Nb2 Nc5 74.Kd2 Nb3 75.Kc2 Na5 76.Kd2 Nb3 77.Kc2 Nc5 78.Kd2 Ke4 79.Kc2 Ncd3 80.Nd3 Nd3 81.Kd2 ½–½. jaddwarrior (2060) – Chicky100, ChessWorld.net, 2016.

4.e3 (--> 3.e3 Bg7 4.c4).

4.e4 b6 5.Nf3 Bb7 6.d3 e6 (6...Nc6 7.b5 Ne5 8.Nbd2+=) 7.Be2 (7.b5 a6+=) 7...Ne7 (7...Nc6 8.b5 Ne5 9.Nbd2+=) 8.0–0 0–0 9.Re1 (9.b5 d6+=) 9...c5 10.b5 d6 11.Nc3 f5 (11...Nd7 12.h4+=) 12.Rb1 (12.Ng5!? Qd7 13.ef5 Nf5 14.Bf3 Bc3 15.Bc3+–) 12...h6+= 13.Qd2 (better 13.Bf1+=) 13...d5? (better 13...Nd7+=) 14.ed5+– ed5 (14...Qd6 15.d4 ed5 16.dc5 Qc5 17.Na4+–) 15.d4 cd4? (15...a6 16.dc5 ab5 17.cd5 Nd5 18.Nb5 Ra2+–) 16.Nd4 Nd7 (16...Qd7 17.cd5 Nd5+–) 17.Ne6 Qc8 (17...Qe8 18.cd5 Be5 19.Bc4+–) 18.Nf8 (18.Ng7!? Nf6 19.Bf3 Rf7+–) 18...Kf8 (18...Qf8 19.Nd5 Nd5 20.Bg7 Kg7 21.cd5+–) 19.cd5 Bc3 (19...Ng8 20.Rbc1 Ngf6 21.Bf3+–) 20.Qh6 Kf7 (20...Ke8 21.Rec1 Qb8 22.Rc3 Nf6+–) 21.Qh7 Ke8 (21...Kf8 22.Bc4!! Qc4 23.Qe7 Kg8 24.Qe6 Kf8 25.Bc3 Qc3 26.Qd7 Qf6+–) 22.d6 Nd5 23.Qg6 (23.Qg6 Kd8 24.Bh5 N7f6 25.Re8 Kd7 26.Qf7 Kd6 27.Ba3 Bb4 28.Bb4 Nb4 29.Qe7 Kd5 30.Rd8 Qd8 31.Bf7 Kd4 32.Qe3; 23.Bc4 Kd8 24.Bd5 Bg7 25.Qg7 Qc2 26.Qe7 Kc8 27.Qe8) 1–0. rcm06 (2150) – jrodolfo, gameknot.com, 2017.

4.e4 e5 5.Nf3=.

4.e4 e6 5.d4+= Ne7 6.b5 (6.Nf3 0–0+=) 6...0–0= 7.Nf3 Re8 (7...d5 8.Nc3=) 8.Be2+= d5 9.Nbd2 de4 10.Ne4 c6 11.a4 h6 (11...f5 12.Nc5+=) 12.0–0+/– Nf5 13.Qb3 Nd7 (13...cb5 14.ab5 a6 15.Rfe1+/–) 14.a5 (14.Rfe1 Qc7+/–) 14...Nf8 15.Rfd1 Qd7 16.d5 (better is 16.bc6 bc6 17.Rab1+/–) 16...ed5= 17.cd5 (17.Nc3 d4 18.c5 Kh8 19.g4–/+) 17...Nd6?? (better is 17...Re4 18.dc6 Qf7 19.Qf7 Kf7+=) 18.dc6 (18.Nd6 Re2 19.dc6 Qe6+–) 18...Qe6 (18...Qf7 19.Qf7 Nf7 20.Nfd2 bc6 21.bc6+–) 19.Nd6 (better is 19.Qe6!? Re6 20.Rd6 Re4 21.Bd3+–) 19...Qb3 20.Bc4 Qc4 21.Nc4 bc6 22.bc6 Bg4 23.Nd6 Bf3 (23...Re7 24.Rac1 Ne6 25.Ba3+–) 24.gf3 (24.Ne8 Bd1 25.Ng7 Bf3+–) 24…Ne6? (24...Ne6 25.Ne8 Re8+–; better is 24...Reb8+–). Mlynek,Z – NN, ZDK–Sarzyna, Poland, 1985.

4.Nf3 a6 5.e3 e6 6.a3 Ne7 7.d4 0–0 8.Be2 d6 9.Nc3 c6 10.0–0 b5 11.cb5 cb5 12.Rc1 (12.d5 e5+/–) 12...Bb7+= 13.e4 Nd7 14.d5 (14.a4 d5 15.ed5 Nd5 16.Nd5 Bd5 17.ab5 ab5 18.Bb5 Nb6+=) 14...ed5 15.Nd5 (15.Nd4 de4 16.Ne6 Qb8 17.Nf8 Kf8+=) 15...Nd5= 16.ed5 Bd5?? (better is 16...Nb6=) 17.Qd5+– Rf7 18.Qd6 Nb8 (18...f5 19.Bg7 Kg7+–) 19.Qd8 (19.Qd8 Bf8 20.Bd4+–) 1–0. Fournier,Frederic – colchonero35, Active, 2007.

4.Nf3 b6 5.d4 Bb7 6.Nc3 d5 (better is 6...Bf3!? 7.ef3 f5+=) 7.cd5+/– c6 (7...Bd5!? 8.e4 Bb7+/–) 8.dc6+– Bc6 9.e3 e5 (9...a6 10.d5 Bd7 11.Rc1+–) 10.de5 Na6?? (10...fe5 11.Nb5 Qe7+–) 11.ef6 (11.ef6 Qf6 12.Ba6+–; 11.Ba6 fe5 12.e4 Qe7+–) 1–0. Wall,Bill – TFA, Microsoft Gaming Zone, 1999.

4.Nf3 d6 5.Nc3 e5 6.e3 Ne7 7.Be2 0–0 8.h4 a6 9.h5 Bg4 10.h6 Bh8 11.0–0 Nf5 12.Qb3 Nh6 13.c5 Kg7 14.cd6 cd6 15.d4 Nc6 16.de5 de5 17.Rfd1 Qe7 18.Nd5 Qf7 19.Rac1 Rad8 20.e4 Bf3 (better is 20...Be6!?+=) 21.Qf3+/– (21.gf3?! Rd6+=) 21...Nd4 (21...Qe6!?+/–) 22.Bd4+– ed4 23.Rd4 Kg8?? (23...Rc8 24.Rdc4 Rc4 25.Bc4 Rc8+–) 24.Bc4 Qg7 (24...Kg7 25.Nf4 Rc8 26.Bf7 Rc1 27.Rd1 Rd1 28.Qd1 Nf7 29.Ne6 Kg8 30.Nf8 Kf8+–) 25.Nf6 1–0. Janek – Omer, internet, 2016.

4.Nf3 e5 5.e3 Ne7 6.Be2 0–0 7.0–0 d6 8.d3 h6 9.Nbd2 f5 10.Rc1 a5 11.b5 b6 (11...Be6 12.d4 Nd7 13.Qc2+=) 12.a4 Bb7 13.Qc2 Nd7 14.e4 (14.d4 c6+=) 14...f4 (14...Nc5 15.ef5 Nf5 16.Ne4=) 15.d4+= Nf6? (better 15...ed4 16.Nd4 Nc5+=) 16.de5+– de5 (16...Nd7 17.Rcd1+–) 17.Ne5 Qd6 18.Nef3 (better 18.c5 bc5 19.Rfd1+–) 18...Rad8? (18...Nd7 19.Bg7 Kg7 20.Rfd1+–) 19.Rfd1 (19.c5 Qc5 20.Qb3 Bd5 21.ed5 Qb4+–) 19...Ng4? (better 19...Qc5 20.e5 Ng4+–) 20.Bg7 Kg7 21.h3 Ne5 (21...Nf2 22.Kf2 Qc5 23.Kf1 Kg8+–) 22.Nb3 (better 22.Qb2+–) 22...Nf3 23.Bf3 (23.gf3?! Qf6+=) 23...Qf6?? (23...Qe5 24.c5 Bc8 25.cb6 cb6 26.Nd2+–) 24.Qe2 (better 24.e5 Rd1 25.Rd1 Qf5 26.Qf5 Rf5 (26...gf5?? 27.Bb7 Ng6 28.Rd7 Rf7 29.e6+–) 27.Bb7 Re5+–) 24...g5?? (better 24...Qe5+–) 25.Rd8 (25.e5!? Qe6 26.Bb7 c5 27.bc6 f3+–) 25...Rd8 26.Rd1 (better 26.e5 Qe6 27.Bb7+–) 26...Rd1 27.Qd1 Qc3 28.Qd4 (28.c5!? bc5 29.Qd7 Qe5+–) 28...Qd4+– 29.Nd4 Kf6 30.Nb3 (better 30.c5!?+–) 30...Ke5= 31.Nd2 c6? (31...Kd4 32.h4=) 32.Kf1 (better 32.c5!? cb5 33.ab5+=) 32...c5 33.Ke2 Kd4 34.g3 fg3 35.fg3 Kc3 36.e5 (better 36.Bg4=) 36...Bf3–/+ 37.Nf3 Kb4?? (better 37...Kc4 38.Nd2 Kd5–/+) 38.Kd3+– Ka4 39.Nd2?? (39.Kc3 Ka3+–) 39...Ka3 (better 39...Kb4–/+) 40.Kc3+= a4 41.Nb1 Ka2 42.Nd2 a3?? (42...Ka3 43.Ne4 Ka2 44.Kc2+=) 43.Kc2 (43.g4 Ng6 44.e6 Ne7+–) 43...Ka1?? (better 43...Nf5=) 44.Kc1 (44.Kb3!? Ng6 45.e6 Ne7+–) 44...a2?? (44...h5 45.g4 h4+–) 45.Nb3 1–0. e4_e5_f4 (1710) – Ysaac_JM (1700), lichess.org, 2020.

4.Nf3 e6 5.d4 Ne7 6.e3 0–0 7.Be2 b6 (7...a5 8.b5+=) 8.0–0 Bb7 9.a4 e5 (9...d6 10.Nc3+=) 10.d5 (10.de5 fe5 11.Ne5 d6+–) 10...d6 11.Nbd2 f5 12.Qc2 c6 13.e4 (13.dc6 Nbc6 14.b5 Na5+=) 13...cd5 (13...fe4!? 14.Ng5 Qd7=) 14.ed5+= Na6 (14...Qc7 15.Qb3+=) 15.Bc3 Rc8 16.Ng5 Qd7 (16...Nd5!? 17.Ne6 Nc3 18.Qc3 Qf6 19.Nf8 Qf8+=) 17.Ne6+– Rf7 18.Ng5 (18.Ng7 Nd5 19.cd5 Nb4+–) 18...Rff8+= 19.h4 (19.Qb2 Nc7+=) 19...Nd5 (19...Nb4 20.Bb4 Nd5 21.Rab1=+) 20.cd5 Nb4 21.Qb3 Nd5 22.Bc4 Qc6 23.Ne6 (23.Rfc1 Kh8 24.Bb5 Qc3 25.Rc3 Rc3+–) 23...Rfe8 (23...Nc3 24.Nd4 Qc4 25.Nc4=+) 24.Ng7 (better 24.Bb2!? Re6 25.Rfc1+=) 24...Kg7=+ 25.Bd5 Qd5 26.Qd5 Bd5 27.Bb4 Red8 28.Nf3 (better 28.Rac1!? Rc1 29.Rc1=+) 28...Bf3–+ 29.gf3 d5 (29...Rc4 30.Bd2–+) 30.Be7 (30.Rfc1 Kf7–/+) 30...Rd7–+ 31.Bg5 h6 (31...f4 32.Rfe1 h6 33.Re5 hg5 34.hg5–+) 32.Be3 (32.Bd2 Rc4 33.Rfe1 Rh4 34.Re5 Rc4–+) 32...d4 (32...Rc4 33.Rfb1–+) 33.Bd2 Rc2 34.Rfd1 e4 (better 34...f4!?–+) 35.fe4–/+ fe4 36.Bf4 d3 (36...Rc5 37.Rac1–/+) 37.Be3 (37.Rac1 Rc1 38.Rc1 Kf6=+) 37...Rf7 (37...Kh7 38.Rac1 Rdc7 39.Rc2 Rc2 40.Rb1=+) 38.a5 b5 39.a6 Rcc7 (39...Rd7!?=+) 40.Rab1= Rc6 41.Rb5 (41.Rb4 Re7 42.Ra1 Ree6=) 41...Ra6 42.Rb4 Re7 43.Rd4 (43.f3 Rae6+=) 43...Rae6 44.Kg2 a6 45.Ra1 Rb7 46.Rda4 d2? (better 46...Rd7=) 47.Bd2+– Rbb6 48.Be3 Rbd6 49.Rb4 Kf6 50.Rb7 (50.Bh6 Kf5+–) 50...Kf5 (50...g5 51.hg5 hg5 52.Bc5+–) 51.Kg3 h5? (51...g5+–) 52.Rc1 (better 52.Ra5 Re5 53.Re5 Ke5 54.Bf4 Kd5 55.Bd6 Kd6 56.Rb6 Ke5 57.Rg6 e3+–) 52…a5 (52...a5 53.Rc5 Re5 54.Re5 Ke5 55.Bf4 Kd5 56.Bd6 Kd6 57.Rb6 Kc5 58.Rg6 Kc4+–). e4_e5_f4 (1655) – cammira (1655), lichess.org, 2020.

4.Nf3 Nh6 5.e3 0–0 6.d3 d6 7.Nbd2 Nc6 8.a3 a6 9.Be2 e5 10.Qc2 Bf5 11.0–0 Kh8 12.e4 Bg4 13.h3 Be6 14.d4 ed4 15.Nd4 Nd4 16.Bd4 Qd7 17.Qc3 b6 18.Qb2 c5 (better 18...f5+=) 19.Be3?? (19.Bc3 f5+=) 19...Bh3?? (better 19...f5 20.Qb3 f4–+ (20...Ba1?! 21.Bh6 Bg7 22.Bg7 Kg7 23.Bf3–/+)) 20.gh3 (20.bc5 bc5 21.Bh6 Bh6 22.gh3 Qh3=) 20...Qh3 (20...f5!? 21.Qb3 f4=) 21.Qc1 Ng4 (21...f5 22.Bf4 Rad8 23.bc5 fe4 24.Ne4 Rf4 25.Qf4 Be5+–) 22.Bg4 (better 22.Bf4+–) 22...Qg4=+ 23.Kh2 f5 24.Rb1? (24.f3 Be5 25.f4 Ba1 26.Qa1 Kg8 27.Qd1 Qd1 28.Rd1 fe4 29.Nb1 cb4 30.ab4–/+) 24...Be5?? (better 24...fe4 25.Ne4 Qe4–+) 25.f4= Qh4 26.Kg2 Qg4 27.Kh2 Bg7 (27...Qe2!? 28.Kh1 Qe3=) 28.Qd1+= Qh4 29.Kg2 fe4 30.Rh1 (30.Ne4 Qe7 31.Qd3 Rfe8+–) 30...Qe7 31.Qg4 Rf5?? (31...Kg8 32.Rh2 Rf6 33.Rbh1+=) 32.Rh4 (better 32.Qg6! Bd4 33.Bd4 cd4 34.Qf5 Rg8 35.Kf1+–) 32...Kg8? (better 32...Bf6!? 33.Rh6 Rg8+=) 33.Rbh1+– Kf7 (33...Qf6 34.Rh7 (34.Ne4?! Qe6 35.Qf3 Re8=) 34...Re8 35.Nf1+–) 34.Rh7 Rg8 (34...Re8 35.Nf1 Rf6 36.f5+–) 35.R1h6 Rf6 36.f5?? (better 36.Kf2+–) 36...gf5= 37.Rg7?? (better 37.Qh5 Ke6 38.Rf6 Bf6 39.Kf2=) 37...Rg7–+ 38.Qg7 Kg7 39.bc5 (39.Bg5 e3 40.Nf3–+) 39…Rh6 0–1. e4_e5_f4 (1760) – erickgal (1750), lichess.org, 2020.

4.Nf3 Nh6 5.e3 Rg8 6.Nc3 f5 (6...Nf7 7.d4+–) 7.Rb1 (7.d4 a5 8.b5 d6+–) 7...b6 (7...e5 8.d4 e4 9.Nd2+–) 8.Be2 Bb7 9.0–0 d5 (9...g5!?+–) 10.cd5 Bd5 11.Bb5 (better 11.Nd5 Qd5 12.Qc2+–) 11...Nc6?? (better 11...c6 12.Nd5 Qd5+–) 12.Nd5+– Qd5 13.Bc6 (better 13.Qa4 Kd7 14.Rfc1+–) 13...Qc6+– 14.Bg7 Rg7 15.Ne5 (15.Rc1 Qd5+–) 15...Qd6 16.d4 Ng4 (16...Nf7 17.Qa4 Kf8 18.Nf7 Rf7 19.Rfc1+–) 17.Nf3 (17.Ng4!? fg4 18.Qg4 c6+–) 17...0–0–0+– 18.a3 h5 19.a4 h4 20.Nh4?? (better 20.h3 Nf6 21.Qc2+–) 20…Qh2 0–1. aravind555 – hgenius, lichess.org, 2017.

4.f4 Nh6 5.Nf3 d5 6.cd5 Qd5 7.Nc3 Qc4 8.a3 (8.Qa4 Nc6=) 8...Qf4=+ 9.g3 Qd6 10.Bg2 c6 11.0–0 Be6 (11...Bf5 12.d4=+) 12.d4 Nd7 13.b5 (13.Qd3 Rd8=) 13...c5 (13...cb5!? 14.Bc1 Bc4=+) 14.Ne4 Qb6 (14...Qd5 15.Nc5 Nc5 16.dc5 Qc5 17.Nd4=+) 15.a4 (15.dc5 Qc7 16.Nd4 Bf7+–) 15...Rd8 16.d5 Bf7 17.e3 (17.Nfg5!?=+) 17...Nf5–/+ 18.Re1 Ne5 (18...0–0 19.Qd2–/+) 19.Nc3 (19.Ne5 fe5 20.Nd2 0–0=+ (20...Rd5? 21.Bd5 Bd5 22.e4+–)) 19...Nc4–/+ 20.Bc1 Nfd6 21.e4 0–0 (21...f5 22.e5 Ne4 23.Qe2 Ne5 24.Ne5 Be5 25.a5–+) 22.h3 (22.Qe2 e6 23.Bf4 Rfe8–/+) 22...Qa5 (better 22...f5!? 23.e5 Ne4–+) 23.Qd3 e5 (23...e6 24.Bf4–/+) 24.Nd2 Nd2 25.Bd2 c4 26.Qc2 Qb6 (26...f5 27.Rad1=+) 27.Be3= Qc7 28.a5 (28.Ba7? b6 29.Bb6 Qb6 30.Kh2 Ra8–+) 28...Qe7 (28...Ra8!?=) 29.Ba7+= Rc8 30.a6 Be8 31.ab7 Qb7 Increasing the pressure on the isolated pawn on b5 32.Reb1 Rf7 33.Qa4 (better 33.Bf2!?+=) 33...Ra8= 34.Qb4 Ra7 35.Qd6 Ra1 (35...Bf8 36.Qd8 Ra1 37.Ra1 Bb5 38.Nb5 Qb5 39.Kh2=+) 36.Ra1 Bb5 (36...Bf8 37.Qa6 Bb4 38.Rc1 Bc3 39.Rc3 Bb5 40.Qa5=+) 37.Rb1 (37.Qb4 Be8 38.Qb7 Rb7=) 37...Qa7 (37...Bf8 38.Qd8 Qa7 39.Kh2–/+) 38.Kh2=+ Bd7 (38...Bf8!? 39.Nb5 Bd6 40.Na7 Ra7=+) 39.Qb8+= Qb8 40.Rb8 Rf8 41.Rf8 (41.Rb7 Rd8=) 41...Bf8 42.Bf1 Bb4 43.Na2 Bd6 44.Bc4 Kg7 45.Nc3 Kf7 46.Bb5 Bc8 47.g4 (47.Na4 Bc7=) 47...f5 48.g5 (48.Kg3 h5 49.gf5 gf5=+) 48...Bb4–/+ 49.Na4 fe4 50.Nb6 Bb7 51.Bc4 (51.Kg2!?–+) 51...Ke7 52.Bb3 (52.Kg2–+) 52...Ba6 (52...e3 53.Bc4 Bc5–+) 53.Na4?? (better 53.Bc4 Bc4 54.Nc4–/+) 53...e3–+ (53...e3 54.Bd1 e2 55.Be2 Be2–+) 0–1. zabazaba (1675) – jimdaut, gameknot.com, 2013.

4.a4 d6

5.b5 c6 6.e3 (6.e4 e5=) 6...Nd7 (6...Nh6=) 7.c5 (7.d4 e5+=) 7...cb5 (7...Nc5!? 8.d4 Nd7=+) 8.cd6= ed6 (8...ba4 9.de7 Ne7 10.Qa4=) 9.ab5 Qe7 (9...Nh6 10.Nf3+=) 10.Nf3 Nh6 11.Be2 Nf5 (11...0–0 12.0–0+=) 12.Nc3+– 0–0 (12...Nb6 13.0–0+–) 13.0–0 (13.Nd5 Qd8+–) 13...Nb6 14.Rb1 (better 14.d4+–) 14...a6?? (14...Be6 15.d4+=) 15.Rc1?? (better 15.ba6 Be6 16.Ba1+–) 15...Be6+= 16.d4 Nd5 (16...Nc4 17.d5 Nb2+=) 17.Nb1 (17.e4 Nc3 18.Rc3+–) 17...Bd7?? (better 17...Nfe3!? 18.fe3 Ne3=) 18.e4 White fights for the Initiative 18...Qe4 (better 18...Nf4 19.Bc4 d5+=) 19.Nbd2?? (better 19.Bc4 Be6 20.Re1+–) 19...Qe7 20.Re1 Qd8?? (better 20...ab5 21.Bb5 Qf7 22.Bd7 Qd7=+) 21.Bc4+– ab5 (21...Nfe7 22.Bd5 Nd5 23.Qb3+–) 22.Bd5 Kh8 23.Ne4 (23.Bb7 Rb8 24.Be4 Ne7+–) 23...Bc6 (23...Ne7 24.Bb3 d5 25.Nc5+–) 24.Bc6 bc6 25.Rc6 Qd7 (25...d5 26.Nc5+–) 26.d5 Rac8 (26...Rab8 27.Qb3+–) 27.Qc2 (27.Nd4 Nd4 28.Rd6 Qf5 29.Qd4 Rfe8+–) 27...Rc6 28.dc6 (28.Qc6 Qc6 29.dc6 Ne7+–) 28...Qc7 29.Rd1 Rc8 30.Bf6 (better 30.Rc1!? Qe7+–) 30...Bf6 31.Nf6 Qc6 32.Qb2 Qc2 (32...Qc3 33.Qc3 Rc3 34.h3+–) 33.Qa1 (33.Qc2 Rc2 34.g4 Kg7 35.Ne8 Kf8 36.gf5 Ke8 37.fg6 hg6 38.Rd6 b4+–) 33...Qc3 34.Ng5 (34.Qc3 Rc3 35.h3 Kg7+–) 34...Qa1 35.Ra1 Kg7 (35...h6 36.Nge4 d5 37.Nd5+–) 36.Nd5 (worse 36.Nfh7 Rc2+–) 36...Rc5 (36...Kf8+–) 37.Ne6 (37.Ne6 Kh6 38.Nf6+–; 37.Ra7 Ne7 38.Re7 Kh6 39.h4 Rc1 40.Kh2 Rh1 41.Kh1 Kh5 42.Nf6 Kh4 43.Nf3) 1–0. BeepBeepImAJeep (2595) – Pasha_Onegin (1910), lichess.org, 2017.

5.b5 e5 6.Nc3 Qe7 7.e3 (7.Nf3 f5=) 7...Nh6 (7...f5 8.Nd5 Qd8 9.d4=) 8.Nf3 Nf7 (8...0–0 9.d3+=) 9.Be2+= Be6 10.d4 Nd7 11.d5 (11.a5 a6+=) 11...Bf5 (11...Bg4 12.h3 Bf3 13.Bf3=) 12.Nd2 (12.Nh4 Nh6+–) 12...g5 (12...Nc5 13.a5+=) 13.e4 Bg6 14.Bg4 (14.Qc2 Nc5+=) 14...0–0 (14...Nc5 15.0–0+=) 15.Qe2 (15.h4 gh4 16.Nf3 Nc5+=) 15...h6 (15...Nc5 16.0–0+=) 16.Nd1 (16.a5 Nc5+–) 16...Nh8 (16...Nc5!?+=) 17.Ne3+– Rfe8 (17...Nc5 18.Bf5+–) 18.Bf5 Nf8 (18...a6 19.0–0+–) 19.h4 Bf5 (better 19...Nf7!?+–) 20.Nf5 (20.ef5?! a6+–) 20...Nh7?? (20...Qd7+–) 21.hg5 (21.Ne7 Re7 22.Qh5 Rf8+–) 21...fg5 (21...Qf7 22.gh6 Bf8+–) 22.Ne7 Re7 23.Nf1 Nf7 (23...Ng6 24.Ne3+–) 24.Ne3 Rf8 (24...Nf6 25.Nf5 Ree8 26.Ba3+–) 25.Nf5 Ree8 (25...Rd7 26.Qh5 Kh8 27.a5+–) 26.Qh5 Nf6 (26...Kh8+–) 27.Qg6 Nh5 28.Rh5 (28.Rh5 g4 29.Qg7) 1–0. BeepBeepImAJeep (2655) – DeusExMaster (2025), lichess.org, 2016.

5.b5 e5 6.Nc3 Ne7 7.e3 0–0 8.Nf3 f5 (8...Be6 9.d4=) 9.Be2 (9.d4 Nd7=) 9...h6 (9...a6 10.d4=) 10.d4 Kh7 (10...c5 11.de5 de5 12.Nd5=) 11.de5 (11.0–0 Nd7+=) 11...de5 12.Qd8 Rd8 13.Ba3 Ng8 14.Nd5 e4 15.Nd4 Be5 16.Rd1 c6 (16...Rd7 17.Ne6 Rf7 18.Bb2+–) 17.Ne7 (17.f4!?+–) 17...Ne7= 18.Be7 Re8 19.Ba3 (19.Bb4 a6=) 19...cb5 20.cb5 Nd7 (20...a6 21.Bb2=) 21.0–0 (21.h4 a6+=) 21...Nf6= 22.a5 a6 (22...Bd7 23.Rd2=) 23.b6 (23.ba6 b6 24.Nc6 Ba6 25.Ba6 Ra6 26.Ne5 Re5=) 23...Bd7 24.Rc1 (24.f4 ef3 25.Bf3 Rab8+=) 24...Rac8= 25.Nb3 Bc6 26.Nc5 Nd5 27.Rfd1 Nc3 28.Re1 (28.Rc3 Bc3 29.Nb7 Bb7 30.Rd7 Kg8 31.Rb7 Ba5 32.Ba6 Red8–/+) 28...Ne2 29.Re2 Red8 30.Rec2 Kg8 (30...Rd5 31.Kf1=) 31.g3 (31.Bb2 Ba4 32.Be5 Bc2 33.Nb7 Rd7+–) 31...Kf7 32.Na6 Rd3 (32...Ra8 33.Rc5 Bd6 A) worse 34.Rc6 Ba3 (34...bc6? 35.Bd6 Ra6 36.Bc7+–) 35.Rc7 Ke8=+; B) 34.Nc7+=) 33.Bb4 Rcd8 (33...Rb3 34.Be1 Rb2 35.Rc4+=) 34.Nc5 (34.Rc6 bc6 35.Rc6 R3d5+–) 34...Rd1+= 35.Kg2 Bb5 (35...Rc1 36.Rc1 g5 37.a6 ba6 38.Na6+–) 36.Rd1 (36.h3 Rc1 37.Rc1 Rc8+–) 36...Rd1= Do you see the mate threat? 37.h3 (37.Nb7?? Bf1 38.Kg1 Bh3 39.Be1 Re1) 37...Bf1 38.Kh2 h5?? (better 38...Bd6+=) 39.Bc3 (39.Nb7 Ba6 40.Nc5 Bb5+–) 39...Bd6? (39...Bc3 40.Rc3 Be2 41.Nb3+– (41.Nb7 Bf3 42.g4 h4 43.Nd6 Ke6 44.gf5 Kd6 45.Rc6 Kc6 46.fg6 Rh1)) 40.Bd4?? (40.Nb7 Be7 41.Bd4 Ba6+–) 40...h4? (better 40...Bc5 41.Rc5 Be2+–) 41.Nb3?? (better 41.Nb7 hg3 42.fg3+–) 41...hg3 (41...Ke6 42.Bc5 hg3 43.fg3=) 42.fg3+= (42.fg3 Ke6 43.Nc5 Bc5 44.Rc5 Rd2 45.Kg1+=) 1–0. BeepBeepImAJeep (2785) – JBakker (2655), lichess.org, 2020.

5.b5 e5 6.Nc3 Ne7 7.e3 Be6 8.Nf3 b6 (8...Nd7 9.d4=) 9.d4+= c5 (9...a6 10.Bd3+=) 10.Be2 (10.bc6!? e4 11.Ne4+–) 10...ed4 (10...0–0 11.d5 Bg4 12.h3 Bf3 13.Bf3+=) 11.ed4 0–0 12.0–0 d5 (12...a6 13.Re1+–) 13.dc5 dc4 (13...bc5 14.cd5 Nd5 15.Nd5 Qd5 16.Nd4 cd4 17.Bf3+–) 14.c6 (14.Nd4 Bf7 15.Bf3 Nd5+–) 14...Qc7 (14...Nbc6 15.bc6 Nc6 16.Nb5+–) 15.Re1 Nbc6 (better 15...Re8+–) 16.bc6 Nc6 17.Nd4 (better 17.Nd5!? Qf7 18.Bc4+–) 17...Nd4 18.Qd4 f5 19.Qg7?? (better 19.Qe3 Qd7 20.Bf3+–) 19...Kg7 (better 19...Qg7 20.Bf3 Rad8 21.Re6 Rd2–+) 20.Nb5 (20.Nd5 c3 21.Nc7 cb2 22.Ne6 Kf6+–) 20...c3 21.Nc7 cb2 22.Rab1 (22.Ne6 Kf6 23.Rab1 Ke6 24.Bf3 Kf6 25.Ba8 Ra8 26.Rb2 h6+–) 22...Bf7 (22...Ba2 23.Rb2 (23.Na8?! Bb1 24.Rb1 Ra8+–) 23...Rac8 24.Nb5+– (24.Ra2?! Rc7 25.Bd1 Rd8+–)) 23.Na8 Ra8 24.Rb2 Rc8 25.Bb5 Rc5 (25...Rc7 26.h4+–) 26.Rbe2 Kh6 (26...a6 27.Ba6 Bc4 28.Bc4 Rc4 29.Ra1+–) 27.h3 (27.Re7 a6 28.Ba6 Bc4 29.Bc4 Rc4+–) 27...Bc4 (27...Bd5 28.Re7 a5 29.Ra7+–) 28.Bc4 (28.Rc2 Bb5 29.Rc5 bc5 30.ab5 c4+–) 28...Rc4 29.a5 ba5 30.Ra1 a4 31.Rea2 (31.Rea2 a5 32.Ra4+–) 1–0. BeepBeepImAJeep (2580) – ShallWePlayD4 (1945), lichess.org, 2016.

4.a4 e5

5.b5 d5 6.e3 (6.cd5 Qd5 7.Nc3 Qd6=) 6...d4 (6...Ne7 7.cd5 Nd5 8.d4=) 7.ed4 ed4 8.d3 (8.Bd3 c5=) 8...Ne7 9.Nf3 0–0 (9...c5 10.Be2=) 10.Be2 (10.Bd4 Bg4 11.Bc3 Re8+=) 10...Nf5 11.0–0 Ne3?? (better 11...c5=) 12.fe3+– de3 13.d4 Qe7 (13...f5 14.Nc3+–) 14.Nc3 (14.Ba3 Qe6 15.Bf8 Bf8+–) 14...Be6 (14...Re8 15.Nd5 Qd6 16.Qb3+–) 15.d5 (15.Ba3 Qe8 16.Bf8 Bf8+–) 15...Bc8 (15...Rd8 16.Qd4 Bc8 17.Nd1+–) 16.Qd4 (16.Ba3 Qd8 17.Bf8 Qf8+–) 16...Nd7 (16...f5 17.Qd3 Nd7 18.d6 Qd6 19.Qe3+–) 17.Ne4 (better 17.Ba3 Qe8 18.Bf8 Bf8 19.d6 Bd6 20.Ne4+–) 17...f5 (17...Re8 18.Ng3+–) 18.Qg7 Qg7 19.Bg7 Kg7 20.Neg5 (better 20.Nfg5 fe4 21.Ne6 Kg8 22.Nf8 Nf8 23.Rf4+–) 20...Nf6? (better 20...Nc5 21.Nd4 h6+–) 21.Ra3 (21.Nd4!? Re8+–) 21...h6 22.Ne6 Be6 23.de6 Ne4 (23...Rfe8 24.Re3 Ng4 25.Rd3 Re6 26.Nd4+–) 24.Re3 Rae8 25.Nd4 Nc5 (25...c6 26.bc6 bc6 27.g4+–) 26.Bf3 (26.Re5 Na4 27.Ra1 Nc3+–) 26...Rf6 (26...Re7 27.Re5 Nd3 28.Rd5+–) 27.Bd5 (27.Re5 b6+–) 27...c6 (27...Kf8 28.Rf4+–) 28.bc6 bc6 29.Bc6 Ne6 (29...Ree6 30.Ne6 Re6 31.Re6 Ne6 32.Rd1+–) 30.Be8 (30.Nf5 gf5 31.Be8 f4+–) 30...Nd4 31.Rd1 g5 (31...Rd6 32.Kf2 Kf6+–) 32.Rd4 f4 33.Rd7 Kf8 34.Re4 f3 35.Bh5 fg2 (35...f2 36.Kf1 Kg8 37.Re8 Rf8 38.Rf8 Kf8 39.c5 a6 40.c6 g4 41.c7 g3 42.c8Q) 36.Re8 1–0. BeepBeepImAJeep (2550) – roque_star (1835), lichess.org, 2017.

5.b5 Ne7 6.e3 0–0 7.Nc3 Kh8 (7...d6 8.Nf3=) 8.Nf3 d5 (8...d6 9.Be2+=) 9.Be2 (9.d4 e4 10.Nd2 f5+=) 9...dc4 (9...d4 10.ed4 ed4 11.Nd5 Nd5 12.cd5 Qd5 13.Bd4=) 10.Bc4 Nd7 (10...a6 11.0–0=) 11.d4+= Nb6 (11...ed4 12.Qd4 Nf5 13.Qd2+=) 12.Be2 (12.Bb3 ed4 13.Qd4 a6+=) 12...ed4 (12...Be6 13.de5 fe5 14.Qc2+=) 13.Nd4 Nf5 (13...c5 14.Nb3 Nd7 15.Qc2+–) 14.Ne4 (14.Nf5 Bf5 15.a5 Nd7+–) 14...Nd4 (14...Qe7 15.Qc2+=) 15.Bd4 (15.Qd4 Qd4 16.Bd4 f5 17.Bg7 Kg7+–) 15...f5 (15...Nd5 16.0–0+–) 16.Bg7 Kg7 17.Nc5 Qe7 (17...Qf6 18.0–0+–) 18.Qd4 Kh6 19.0–0 (19.Rd1 Rf6+–) 19...Rd8 20.Qf4 g5 21.Qb4 (21.Qf3 g4 22.Qf4 Kg7+–) 21...Nd5 (21...Rd5 22.Rfc1+–) 22.Qc4 Nb6 (22...b6 23.Nb3 Bb7 24.Rfd1+–) 23.Qc1 (better 23.Qc2+–) 23...Be6? (23...Rd5 24.Nd3+–) 24.Bf3 (24.Nb7 Re8+–) 24...Bd5 (24...c6!? 25.Ne6 Qe6+–) 25.Bd5 (25.Nb7 Bb7 26.Bb7 Rab8+–) 25...Rd5 26.Nb3 (26.Nb7!? Kg7 27.a5+–) 26...Rad8 (26...a6 27.a5 Nc8 28.ba6 Ra6 29.Rd1 Rd1 30.Qd1+=) 27.Nd4 (27.a5 Nc8 28.Nd4 R8d6+–) 27...f4 (27...Rc5 28.Qb1 Qe5 29.a5+–) 28.Qc2 (28.a5 fe3 29.fe3 Nc4+–) 28...Qf6 (28...Qe5 29.a5 Nd7 30.a6 fe3 31.Nf3+–) 29.Nf3 (29.Qc7!? Qe5 30.Qe5 (30.Qb7 fe3 31.Nf3 Qa1 32.Ra1 Rd1 33.Ne1 ef2 34.Kf2 Rf8 35.Nf3 Ra1 36.Qc6 Kg7 37.Qc3 Kg6 38.Qa1 g4+–) 30...Re5 31.a5+–) 29...g4 30.Ne1?? (30.Nd4!?+=) 30...f3 (better 30...Qa1!? 31.Qc7 Qe5 32.Qb7 fe3 33.f4–+) 31.Qe4?? (31.Rc1 fg2 32.Ng2 a6+=) 31...Rg5 (better 31...Qa1 32.Nf3 Qg7 (32...Qa4?! 33.Qe6 Kg7 34.Qe7 Kg8 35.Qe6 Kf8 36.Qf6 Ke8 37.Qe6 Kf8 38.Qf6 Ke8 39.Qe6 Kf8=) 33.Qf4 Kh5–+) 32.Qf4 (32.Rc1!? Nd5 33.Qc2=) 32...Qf4–/+ 33.ef4 Rf5 34.g3 Rf7 (34...Rd4 35.h3 Ra4 36.Ra4 Na4 37.hg4 Rb5 38.Nf3=) 35.Nc2 (35.h3 Nc4 36.Kh2 Kh5=) 35...Rd6 (35...Nd5!?=+) 36.Ne3= Nd5 (better 36...Kh5=) 37.Ng4+– Kh5 38.Ne5 Rf5?? (38...Rg7 39.Ra3+–) 39.Nf3 (better 39.g4 Kh4 40.gf5 Nf4 41.Rfd1+–) 39...Nf4? (better 39...Kh6+–) 40.gf4 Rf4 41.Ne5 Rd5 42.Rfe1 Rf5 43.Nc4 Rd4 44.Ne3 (44.Re5 Re5 45.Ne5 Re4+–) 44...Rg4 (44...Rg5 45.Kf1 c5+–) 45.Kf1 (45.Kf1 Rf7 46.Ng4 Kg4 47.Rac1+–; 45.Ng4 Kg4 46.Re7 Rc5 47.Rh7 a6+–) 1–0. BeepBeepImAJeep (2485) – auditor2016 (2355), lichess.org, 2017.

5.b5 Ne7 6.e3 0–0 7.Nf3 d5 (7...e4 8.Nd4=) 8.Be2 (8.cd5 Nd5 9.Bc4 Be6=) 8...dc4 (8...e4!? 9.Nd4 c5=) 9.Bc4+= Kh8 10.d4 e4 11.Nfd2 Qd6? (11...f5 12.0–0+=) 12.Ne4?? (better 12.Ba3 Qd8 13.Ne4+–) 12...Qb6?? (better 12...Qb4 13.Nbd2 Qb2=) 13.0–0 (better 13.a5 Qe6 14.Be6 Be6+–) 13...Nd7?? (13...c6+–) 14.a5 Qd6 (14...f5 15.ab6 fe4 16.ba7+–) 15.Nd6 cd6 16.Ba3 Nf5 17.Nd2 (better 17.e4 Nd4 18.Bd6 f5 19.Bf8 Nf8+–) 17...b6 (17...Rd8 18.Qf3+–) 18.Bd3 (18.g4!? Nh6 19.Qf3 Rb8 20.Bd6 Bb7+–) 18...ba5 19.Bf5 Rb8 (19...gf5 20.Bd6 Rg8 21.Qf3+–) 20.Bd6 (better 20.Bd3 Rb6+–) 20...Rb6 21.Bf8 Bf8 22.Bd7 (22.Bd7 Bd7 23.Qf3 Bb5 24.Rfc1+–; better 22.Qc2 Rb8 23.Bd7 Bd7+–) 1–0. BeepBeepImAJeep (2755) – Peterlap, lichess.org, 2015.

5.e3 Ne7 6.b5 0–0 7.Nf3 c6 (7...e4 8.Nd4=) 8.Be2 d5 9.d4 e4 10.Nfd2 Be6 (10...f5 11.Qb3=) 11.Nc3 (11.cd5 cd5 (worse 11...Qd5 12.Nc3 Qg5 13.Nde4 Qg2 14.Bf3+–; worse 11...Nd5 12.Ne4 b6 13.Bc4+–) 12.Ba3 f5=) 11...Nd7 (11...f5 12.0–0=) 12.Rc1 (12.0–0 f5+=) 12...Rc8 13.Ba3 Rf7 (13...f5 14.0–0+=) 14.bc6+– bc6 15.cd5 cd5 16.Nb5 Qb6 (16...Rc1 17.Qc1 Nb6 18.Qc7+=) 17.Rc8 (17.Rb1!? Rc6 18.0–0+–) 17...Nc8+= 18.0–0 a6 19.Nc3 h6 (19...Qc6 20.Qc1 Nd6 21.Qc2+=) 20.Qa1 (20.Qb3 f5+–) 20...Kh7 (20...f5 21.Rb1 Qa7 22.Qa2+=) 21.Rb1 (21.Rc1+=) 21...Qa5 (21...Qc6 22.Rc1 Qa8 23.Qa2+=) 22.Bb4 (22.Nb3 Qd8+–) 22...Qc7 (22...Qb6 23.a5 Qc6 24.Qa4+=) 23.Rc1 (23.Ba6 Nb8 24.Be2 Nc6+–) 23...Qd8 (23...Qb7 24.Ba3+=) 24.Qa3 (24.Ba6 Qb6 25.Bc8 Qb4+–) 24...Ncb6 (24...a5!? 25.Bd6 f5+=) 25.Ba5 (25.a5 Na8+–) 25...Qb8 (better 25...f5!? 26.Qd6 Rf6 27.Bb6 Qb6 28.Qb6 Nb6 29.Ba6 Rf7+–) 26.Rb1+– Qa7?? (26...Qc7+–) 27.h3 (27.Qd6!? Bf5 28.Bb6 Nb6 29.Rb6 Rd7+–) 27...f5?? (27...Nc8 28.Qb3+–) 28.Qb3 (better 28.Qd6+–) 28...Nc4 (28...Na8 29.Nd5 f4 30.Bc4 fe3 31.fe3+–) 29.Nc4 (29.Bc4?! dc4 30.Qa3 Rf8+=) 29...dc4 30.Bc4 Bc4 31.Qc4 Nf6 (better 31...Rf8!?+–) 32.Rb6+– Qd7 33.Qa6 Nd5?? (33...Qd8+–) 34.Rd6 Qc8 (34...Qe8 35.Rd5 Qg8+–) 35.Qc8 Nc3 36.Bc3 (36.Bc3 g5 37.d5 g4 38.Rd7 Bc3 39.Rf7 Bg7 40.Qf5 Kg8 41.Qg6 gh3 42.Qg7) 1–0. BeepBeepImAJeep (2515) – Rv_loves_you (1825), lichess.org, 2017.

4.a4 Nh6

5.b5 0–0 6.e3 Nf7 (6...e5 7.d4=) 7.Nc3 e5 8.Nf3 d6 9.Be2 Nd7 10.d4 f5 11.0–0 e4 12.Nd2 g5 (12...c5 13.Nd5+=) 13.f3 ef3 14.Bf3 Nf6 (14...Re8 15.Bd5 Qe7 16.Rf5 Qe3 17.Kh1+–) 15.e4 (15.Nd5 Re8+–) 15...fe4 (15...g4 16.Be2+=) 16.Nde4 Ne4 (16...Nd7 17.Qd3+–) 17.Ne4 (17.Be4 g4+–) 17...Re8 (17...a6 18.Ng3+–) 18.Qd3 (18.Nc3 g4 19.Bd5 Re7+–) 18...g4+= 19.Bd1 Bd7 (19...Be6 20.Bb3+=) 20.Bc2 Qh4 21.Rae1 (21.Rf4 Be6+–) 21...Re7 22.g3 (22.Re2 Rae8+=) 22...Qh6 (22...Qh5 23.Nd2 Be6 24.d5 Bb2 25.Re6+–) 23.Bc1 White is in command 23...Qh5 24.Nc3 Rae8? (better 24...Re1!? 25.Re1 c6+=) 25.Re7+– Re7 26.Nd5 Re8 27.Nc7 Rf8 (27...Bd4 28.Kh1 Re5 29.Qd4+–) 28.Bf4 (28.Nd5!? Re8+–) 28...Ng5 29.Bg5 Rf1 30.Kf1 Qg5 31.Qh7 Kf7 (31...Kf8 32.Qd3+–) 32.Qe4 (32.Nd5 Be6+–) 32...Qc1 (32...Qf6 33.Kg2+–) 33.Ke2 Qg1?? (33...Qh6 34.Qh1+– (34.Qb7?! Qh2 35.Kf1 Qc2 36.Qd5 Ke7 37.Qg5 Kf7 38.Qd5 Ke7 39.Qg5 Kf7 40.Qd5=)) 34.Qf4 (34.Qd5 Kf8 35.Qd6 Kg8 36.Qd5 Kf8 37.Qd7 Qh2 38.Kd1 Qh1 39.Kd2 Qh6 40.Kc3 Qe3 41.Bd3 Bd4 42.Qd4 Qc1 43.Kb4 Qe1 44.Kc5 Qe7 45.Qd6 b6 46.Kc6 Qd6 47.Kd6+–) 34...Kg8 35.Bg6 Qh2 (35...Qd4!? 36.Bf7 Kh7 37.Qd4 Bd4 38.Be6 Be6 39.Ne6+–) 36.Kd3 (36.Kd3 Qg1 37.Kc2 Qd4 38.Qd4 Bd4 39.Kd3+–) 1–0. BeepBeepImAJeep (2710) – ssj2gohan (2555), lichess.org, 2020.

5.b5 b6 6.Nc3 (6.Nf3 0–0=) 6...Bb7 (6...0–0 7.d4=) 7.e3 0–0 8.Nf3 Nf7 (8...e5 9.a5=) 9.Be2 e5 10.0–0 c6 (10...a6 11.d4+=) 11.d4 d5 (11...a6!?+=) 12.bc6 Bc6 (12...Nc6 13.cd5 Ne7 14.de5 fe5 15.e4+–) 13.cd5+– Bd5 14.Nd5 (14.de5 Bb7 15.e6 Ne5+–) 14...Qd5+– 15.de5 fe5?? (better 15...Qd1 16.Rad1 fe5+–) 16.Qd5 (16.Qd5 Nc6 17.Qc6+–) 1–0. BeepBeepImAJeep (2465) – vladimirpetrof (2000), lichess.org, 2017.

5.b5 Nf7

6.Nc3 0–0 7.e3 c6 8.Nf3+= d5 9.d4 e5 (9...Bg4!?+=) 10.cd5+– cd5 (10...cb5 11.Ba3 Re8 12.Bb5+–) 11.de5 fe5 12.Qd5 Qe7 (better 12...Nd7!?+–) 13.Ba3 Qe6? (13...Qc7 14.Qc4 Qc4 15.Bc4+–) 14.Qe6 (better 14.Bf8!? Bf8 15.Bc4 Bb4+–) 14...Be6 15.Bf8 Bf8 16.Be2 (16.0–0–0 Ba3 17.Kc2 a6+–) 16...Nd7 17.0–0 Nb6 (17...Nf6 18.Rfc1+–) 18.Ne4 (18.Rfc1 Rc8+–) 18...Bg7 (18...a5 19.ba6 ba6 20.Rfc1+–) 19.Rfc1 (19.Nc5 e4 20.Nd4 Bd5+–) 19...Re8 (19...Bf5 20.Nc3+–) 20.Nc5 (20.a5 Na8+–) 20...Bc8 (20...e4 21.Nd4 Bd5 22.a5+–) 21.a5 Nd5 (21...e4 22.Nd4 Nd5 23.Bc4+–) 22.a6 (22.Bc4 e4 23.Ne4 Bf5+–) 22...b6 (22...ba6 23.Na6 e4 24.Nd4+–) 23.Ne4 (better 23.Bc4 e4 24.Ne4 Be6+–) 23...Nf6 (23...Bf5 24.Ng3 e4+–) 24.Nf6 Bf6 25.Nd2 (better 25.Rc7 Bg4 26.Bc4 Be6 27.Be6 Re6 28.Ra7 Nd6 29.Ra8 Kf7+–) 25...Bf5 Black intends e4 26.Rc7 e4 (26...Rd8 27.Rd1 Nd6 28.e4 Ne4 29.Ne4 Rd1 30.Bd1 Be4 31.Bb3 Kh8 32.Ra7+–) 27.Rac1 Be5 (27...Rd8 28.Rd1 Nd6 29.Ra7+–) 28.Ra7 Nd6 29.Nc4 (better 29.Rc6!? Rd8 30.g4 Bd7 31.Rb6 Kf8 32.Rd6 Bd6 33.Ne4 Be5+–) 29...Nb5 30.Rb7 Bf6 (30...Rc8 31.Rb6 Na7 32.g4+–) 31.Rb6 Na7 (31...Nc3 32.Rc3 (32.Rf6?! Ne2 33.Kh1 Nc1+=) 32...Bc3 33.a7+–) 32.Rf6 Nc8 33.Rf5 (better 33.Nb6 Kg7 34.Nc8 Rc8 35.Rc8 Bc8+–) 33...gf5 34.g4 (34.Rb1 Re6 35.Rb8 Ra6 36.Rc8 Kg7+–) 34...fg4 35.Bg4 Ne7 (35...Kh8 36.Bf5 Rg8 37.Kf1+–) 36.Be6 (better 36.Nb6!? Kh8 37.a7 Rg8+–) 36...Kg7 37.a7 (37.Nb6 Kf6 38.Bb3 h5+–) 37...Kf6 (37...Ra8 38.Ra1 Nc6 39.Ra6+–) 38.Bh3 (38.Bd7 Ra8 39.Ra1 Nd5+–) 38...Rd8 (38...Nc6 39.Ra1 Na7 40.Ra6 Kg5 41.Ra7 Rb8+–) 39.Nb6 Nd5 40.Nd5 Ke5 41.Bc8 Rd5 42.a8Q (42.a8Q Rb5 43.Qc6 Rb2 44.Qe6) 1–0. BeepBeepImAJeep (2620) – antros1 (1925), lichess.org, 2016.

6.Nc3 0–0 7.e3 d5 8.Nf3 dc4 9.Bc4 Bf5 10.0–0 Kh8 (10...Bd3 11.Bd3 Qd3 12.Ba3+=) 11.d4 e6 (11...Nd6 12.Bd3+=) 12.Qb3+– g5 (better 12...Qd7!?+–) 13.Be6 Bg6 (13...Be6 14.Qe6 Qd7 15.Qd5+–) 14.Rac1 Nd7 (14...Nd6 15.Ba3+–) 15.Nd5 (15.Ba3 Nd6 16.Nd5 Nb6 17.Nc7 Rb8+–) 15...Nd6 (15...Rc8 16.Rfd1+–) 16.Nc7 (16.Ba3 Nb6 17.Nc7 Rb8+–) 16...Rc8 17.Ba3 Rc7 18.Bd6 Rc1 19.Rc1 Nb6 (19...Re8+–) 20.Bf8 Qf8 (20...Bf8 21.a5 Nd7 22.Qd5+–) 21.a5 Nd5 (21...Qe7 22.ab6 ab6 23.Rc8 Bf8 24.Qd5+–) 22.Rc8 g4 (22...Ne7 23.Rf8 Bf8 24.d5+–) 23.Rf8 Bf8 24.Qd5 gf3 25.gf3 Kg7 26.Qd7 (better 26.Qb7 Kh6 27.b6 ab6+–) 26...Kh6 27.Bf5 (27.Qb7 Bd6+–) 27...Bg7 28.Bg6 hg6 29.Qh3 Kg5 30.Qg4 (30.f4) 30...Kh6 31.Qh4 1–0. BeepBeepImAJeep (2660) – thenextlevel (2090), lichess.org, 2017.

6.Nc3 0–0 7.e3 d6 8.Nf3 e5 9.d4 (9.Be2 f5+=) 9...Nd7 10.Be2 f5 11.0–0 e4 12.Nd2 Nf6 13.f4 ef3 14.Bf3 Rb8 (14...Bh6 15.Qe2=) 15.Re1 (15.a5 Ng5+=) 15...Bd7 (15...Ng5 16.a5=) 16.e4+= fe4 (16...Be6 17.ef5 Bf5 18.Nde4+=) 17.Nde4 Ne4 18.Ne4 (worse 18.Re4 Ng5–/+) 18...Bf5 19.Ng3 Bd7 20.Qd2 (20.Qd3 c6+=) 20...Bh6 (20...c6 21.Ne4+=) 21.Qc2 Bg7 22.d5 (22.Rf1 c6+=) 22...Ne5= 23.Be4 Qh4 24.Rf1?? (better 24.Nf1=) 24...Ng4–+ 25.Rf8 (25.h3 Qg3 26.hg4 Qe3 27.Rf2 Rf2 28.Qf2 Qf2 (28...Qe4 29.Re1 Qe1 30.Qe1 Bb2 31.Qe7 Bg4 32.Qc7 Bd4 33.Kh2 Be5 34.Kg1–+) 29.Kf2 Bb2–+) 25...Rf8 26.Nf1 (26.h3 Ne3 27.Qe2 Bb2 28.Qb2 Qg3 29.Qe2–+) 26...Ne5 (better 26...Rf1 27.Kf1 Ne3 28.Kg1 Nc2 29.Bc2 Bb2–+) 27.Ra3?? (27.a5 Re8 28.g3 Qe7=+) 27...Qf6 (better 27...Nc4 28.g3 Na3 29.gh4 Nc2 30.Bg7 Kg7 31.Bc2 c6 32.bc6 bc6–+) 28.Ng3= Bf5 (28...Qg5!? 29.Rb3 Qh4=) 29.Bf5+= gf5 30.h3 (30.Nh5 Qh4 31.Qe2 A) 31...Nc4?? 32.Bg7 Qe4 33.Qe4 fe4 34.Rc3+– (worse 34.Bf8 Na3 35.Bh6 Nc4+–); B) 31...Qc4 32.Qc4 Nc4 33.Rg3 Nb2 34.Rg7 Kh8 35.Rc7+–; C) 31...Bh8+=) 30...f4 (30...Qg6 31.Rb3=) 31.Nh5 Qg6 (31...Qf5 32.Qf5 Rf5 33.Ng7 Kg7 34.a5=) 32.Qg6 (32.Ng7?? Qc2 (32...Qg7?! 33.c5=; worse 32...Kg7 33.Qe2+=) 33.Be5 Qc1 34.Kf2 Qa3–+) 32...hg6 (32...Ng6?? 33.Ng7 (33.Bg7?! Rf5 34.g4 fg3 35.Ng3 Rf4+–) 33...Ne5 34.Be5 de5 35.Ne6+–) 33.Ng7 Kg7 34.Rf3 (34.c5 Kf6 35.Rc3 Rf7=) 34...Kh6 35.Rf1 (35.Rc3 Re8=) 35...g5 (35...Nc4 36.Bc1–/+) 36.Kh2 (36.Bd4 Rf5= (worse 36...Nc4 37.Rc1 Ne3 38.Rc7+–)) 36...Nd3 (36...Nc4!? 37.Bd4 Nb6 38.Bb6 ab6=+) 37.Bd4= Ne5 38.a5 (38.c5!?=) 38...Nc4=+ 39.a6 (39.Re1 Rf5 40.Re6 Kh7 41.Re7 Kg6 42.Rg7 Kh6 43.Rc7 Na5=+) 39...b6 (39...ba6 40.ba6 Nb6 41.Bb6 cb6 42.Re1=+) 40.Rc1=+ Ne5?? (better 40...Na3 41.Rc7 Ra8=+ (worse 41...Nb5 42.Bg7 Kg6 43.Bf8 Nc7 44.Bd6 Nd5 45.Bb8–+)) 41.Rc7+– Rf6? (better 41...Ra8+–) 42.Be5 g4 (42...de5 43.Ra7 Rd6+–) 43.Rc6 (better 43.Bf6 f3 44.gf3 gf3+–) 43...de5 (43...Rf7+–) 44.Rf6 Kg5 (44...Kg7 45.Rb6! f3 46.gf3 gf3 47.Rb7 Kg6 48.b6+–) 45.Re6 (better 45.Rf8 Kh6 46.d6 g3 47.Kg1 Kg7+–) 45...g3 (45...f3 46.d6 Kf5+–) 46.Kg1 Kf5 47.Rh6 (better 47.Re8!? e4+–) 47...f3 (47...e4+–) 48.Rh5 Ke4 49.gf3 (49.d6 Kd3+–) 49...Kf3 (49...Kd5 50.f4 Ke6 51.Re5 Kf6 52.h4 Kg6 53.Rg5 Kf7 54.h5 Ke6 55.h6 Kd7 56.h7 Ke7 57.h8Q g2 58.Qg7 Kd6 59.Qe5 Kd7 60.Rg7 Kd8 61.Qb8) 50.Kf1 e4 51.Rf5 Ke3 52.Kg2 (52.d6 Kd3 53.d7 Kc3+–) 52...Kd3 53.Kg3 (53.Kg3 e3 54.d6+–) 1–0. BeepBeepImAJeep (2690) – kahne99 (2005), lichess.org, 2017.

6.Nc3 0–0 7.e3 d6 8.Nf3 e5 9.d4 Nd7 (9...a6 10.Be2+=) 10.Be2+= f5 11.Qc2 (11.0–0 c5+=) 11...e4 12.Nd2 Nf6 (12...c5 13.bc6 bc6 14.0–0=) 13.g3 (13.0–0 Be6+=) 13...h5 (13...Ng5 14.h4 Nf7 15.h5=) 14.h4 (14.0–0 Ng5+=) 14...Ng4 (14...a6 15.0–0=) 15.Bg4 hg4 16.h5 gh5 17.Rh5 Ng5 (17...a6 18.ba6 Ra6 19.Nd5=) 18.0–0–0 (18.Nd5 Nh7+=) 18...Be6 (18...Nh3!?=+) 19.d5 Bf7 20.Rh2 Nf3 (better 20...Be5!?+=) 21.Nf3+– gf3 22.Rdh1 (better 22.g4 Be5 23.Rhh1+–) 22...Qg5?? (better 22...Bg6+–) 23.Ne4!+– fe4 24.Rh8! A classical mating theme 24...Bh8 25.Rh8 The nicest combinations are those leading to mate 1–0. BeepBeepImAJeep (2665) – Velocity_Chess (2430), lichess.org, 2016.

6.Nc3 0–0 7.e3 e5 8.Nf3 d6 (8...Re8 9.Be2+=) 9.d4 c5 10.dc5 dc5 11.Qd8 Rd8 12.Be2 (12.Nd5 Nd7+=) 12...Be6= 13.Nd2 b6?? (better 13...a6=) 14.Bf3+– Nd7 15.Ba8 Ra8 16.Nd5 Bd5 17.cd5 Nd6 18.e4 (18.Ke2 Kf7+–) 18...Re8 19.Rc1 f5 (19...Bh6 20.f3+–) 20.f3 fe4 (better 20...Bh6 21.Nc4 Bc1 22.Nd6 Bb2 23.Ne8 Kf8+–) 21.fe4 (better 21.Ne4!? Ne4 22.fe4 Nf6+–) 21...Rf8 (21...Nf6 22.Rc2+–) 22.Ke2 (22.Rc2 Rf4+–) 22...Bh6+– 23.Rhf1 Bd2 24.Kd2 Rf1 25.Rf1 Ne4 26.Ke3 (26.Kd3 Nd6+–) 26...Nd6 (26...Nef6 27.Rd1+–) 27.Bc3+– Kg7 28.Kd3 (better 28.Ke2+–) 28...Nf6?? (better 28...g5+–) 29.Be5+– Nf5 (29...c4 30.Kc2 Nde4 31.d6+–) 30.Bf6 (30.g4!? c4 31.Kc3 Kf7 32.Bf6 Nd6 33.Bg5 Kg7+–) 30...Kf6 31.g4 Ke5 32.gf5 gf5 33.d6! Kd6 Theme: Deflection from f5 34.Rf5 Ke6 35.Rh5 Kf6 (35...h6 36.Rh6 Ke5 37.Rh7+–) 36.Rh7 Ke6 37.Ra7 Kd5 38.Rd7 (38.h4 Ke6 39.h5 c4 40.Kc4 Ke5 41.h6 Kf6 42.h7 Ke5 43.h8Q Ke4 44.Qe8 Kf5 45.Qf8 Kg4 46.Rg7 Kh5 47.Qh8) 38...Ke5 39.Rd8 Kf5 40.Kc4 Ke5 41.Rd5 Ke6 42.a5 ba5 43.b6 a4 (43...Kf6 44.b7 Kf7 45.b8Q Ke7 46.Qc7 Ke6 47.Qc6 Kf7 48.Rd7 Kf8 49.Qc8) 44.b7 a3 (44...Kf6 45.b8Q Kf7 46.Qc7 Ke6 47.Qc6 Ke7 48.Rd7 Kf8 49.Qc8) 45.b8Q a2 (45...Kf6 46.Qe5 Kg6 47.Qe6 Kg7 48.Rd7 Kf8 49.Qf7) 46.Qe5 (46.Qe5 Kf7 47.Rd7 Kg6 48.Rg7 Kh6 49.Qg5) 1–0. BeepBeepImAJeep (2585) – Viareggio69 (1750), lichess.org, 2017.

6.e3 e5 7.Nc3 0–0 8.Nf3 Re8 9.Be2 c6 (9...f5 10.d4+=) 10.0–0 d5 11.d4 dc4 (11...Be6 12.Qb3+=) 12.Bc4 Nd7? (better 12...cb5 13.Nb5 a6+–) 13.Qb3+– c5?? (13...Re7 14.Ba3 ed4 15.Be7 Qe7 16.ed4 Qf8+–) 14.Bf7 Kh8 15.Be8 cd4 (15...Qe8 16.de5 Ne5 17.Ne5 Qe5 18.Qd5+–) 16.Bd7 (better 16.Ne4!? Qe8 17.Nd6 Nc5+–) 16...dc3 17.Bc3 Qd7 18.Rad1 Qe8 19.Qd5 Be6 (19...Rb8 20.Rd2+–) 20.Qd2 (better 20.Qb7!? Qc8 21.Qe7 Qe8 22.Qe8 Re8+–) 20...Qg8 (20...Bb3 21.Ra1+–) 21.Bb4 (21.Qb2 Bg4+–) 21...Rc8 (21...Bb3 22.Ra1+–) 22.Rfe1 (22.Rc1 Rd8 23.Qe2 Rc8+–) 22...b6 (22...Bb3 23.Ra1+–) 23.Rc1 Rd8 24.Qb2 f5 (24...Bg4 25.Rc7+–) 25.Red1 (25.Ne5 Bd5+–) 25...Rb8 (25...e4 26.Nd4 Rd7 27.Bc3+–) 26.Bc3 e4 (26...h6 27.Ne5 Kh7 28.Nd7+–) 27.Bg7 (better 27.Ng5 Ra8+–) 27...Qg7 28.Qg7 (28.Nd4 Kg8+–) 28...Kg7 29.Nd4 Ba2 (29...Kf6 30.Ne6 Ke6 31.Rc6 Ke7 32.Rc7 Ke6 33.Ra7+–) 30.Rc2 Bd5 (30...Bg8 31.Rc7 Kf6 32.Nc6+–) 31.Nf5! gf5 32.Rd5 Eliminates the defender d5 32...Kf6 (32...Ra8 33.Rf5 Kg6 34.Rd5+–) 33.Rc6 Kg5 (33...Ke7 34.Re5 Kf7 35.Rf5 Kg8+–) 34.h4! Kg4 (34...Kh4 A deflection 35.Rf5) 35.Rf6 Rc8 (35...h6 36.Rff5 Rf8 37.Rf8 Kh4 38.Rf4) 36.Rdf5 (36.Rff5 Rc1 37.Kh2 Rh1 38.Kh1 Kh4 39.Rf4) 36...Kh4 (36...Rg8 37.Re5 Kh4 38.Rf4 Rg4 39.g3 Kh3 40.Rh5 Rh4 41.Rfh4) 37.Kh2 (37.Rd5 Rg8 38.Rf4 Rg4 39.g3 Kh3 40.Rh5 Rh4 41.Rfh4) 37...Rc5 (37...Rd8 38.Re5 Rf8 39.Rf8 a6 40.Rf4) 38.Rc5 (38.Rh6 Kg4 39.Rf4 Kg5 40.Rfh4 Rc3 41.Kg3 Re3 42.fe3 a6 43.R4h5) 38...bc5+– 39.Rc6 c4 40.Rc4 Kg5 41.Re4 h5 42.Kh3 Kf5 43.Rh4 Kg5 44.f4 (44.a5 Kf6 45.b6 ab6 46.ab6 Kg6 47.b7 Kf6 48.b8Q Ke6 49.Rd4 Kf5 50.Qc8 Ke5 51.Qc6 Kf5 52.Rd5 Ke4 53.Qe6) 44...Kf5 45.Rh5 Ke4 46.Re5 Kd3 47.Kg4 Ke2 48.Kf5 a6 49.g4 ab5 50.g5 (50.ab5 Ke1+–) 50...b4 51.Rb5 b3 52.Rb3 Kf3 53.g6 Kg3 54.g7 Kh4 (54...Kf2 55.e4 Kg2 56.g8Q Kf2 57.Rb2 Ke3 58.Qc4 Kf3 59.Qd3) 55.g8Q (55.e4 Kh5 56.Rh3) 55...Kh5 (55...Kh3 56.Rb7 Kh4 57.Qg4) 56.Qh8 (56.Qg5) 1–0. BeepBeepImAJeep (2460) – thenextlevel (2080), lichess.org, 2017.

3.c4 Nh6

4.Nc3 Nf7 5.a4 Bg7 6.b5 0–0 7.e3 e5 8.Nf3 d6 9.Be2 c6 10.d4 Be6 (10...f5 11.0–0+=) 11.Qc2 (11.d5 cd5 12.Nd5 Nd7+=) 11...d5 12.de5 (12.bc6 bc6 13.0–0 Nd7+=) 12...fe5 13.Rd1 d4 14.Ne4 b6? (better 14...Qa5 15.Qd2 A) 15...Qa4?? 16.Nc5 (16.ed4?! Bc4 17.bc6 Nc6=+) 16...de3 17.fe3 (17.Na4 ed2 18.Nd2 cb5 19.cb5 Nd7–/+; 17.Qe3?! Qc2 18.Ne6 Qb2+–) 17...Qd1 18.Qd1+– (18.Bd1?! Bc4 19.bc6 Nc6+–; worse 18.Kd1 Rd8 19.Ne6 Rd2 20.Kd2 Nd7+–); B) 15...Qd2 16.Rd2 Bf5+=) 15.ed4+– Bf5 16.de5 Qe7 (16...Qc7 17.c5+–) 17.Bd3 (17.Nf6 Kh8 18.Qc3 Be6+–) 17...Nd7 (17...Bg4 18.e6 Qe6 19.Bg7 Bf3 20.Bf8 (20.gf3?! Kg7 21.Qc3 Ne5+=) 20...Bd1 21.Qd1 Kf8 22.0–0+–) 18.0–0 (18.e6!? Bb2 19.ed7 cb5 20.Qb2 Be4 21.Be4 Qe4 22.Qe2 Qc4 23.ab5 Qb4 24.Kf1+–) 18...Nfe5+– 19.Ne5 Ne5 20.Be5 Be5 21.Ng3 Bg3 22.hg3 (22.fg3? Qe3 23.Qf2 Qd3 24.Rd3 Bd3 25.Qf8 Rf8–+) 22...Bg4 (22...Rae8 23.Bf5 Rf5 24.Qc3+–) 23.Rde1 Qc5? (23...Qc7 24.Qb3 Qf7 25.bc6+–) 24.Be4 (better 24.Bg6 Bf5 25.Bf5 Qf5 26.Qf5 Rf5 27.Re6 cb5 28.cb5+–) 24...cb5?? (better 24...Bf5+–) 25.Ba8 Ra8 26.ab5 (26.Qe4!? Rf8 27.Qg4 Qc4+–) 26...Rc8 27.Qe4 Qc4 28.Qc4 Rc4 29.Rc1 (better 29.Re7!? Rd4+–) 29...Be2 30.Rc4 Bc4 31.Ra1 Bb5 32.Ra7 Bc4 33.Rb7 b5 34.f4 (34.g4 h6+–) 34...h5 35.Kf2 Bd3 36.Ke3 Bc4 37.Kd4 Bf1 38.Ke5 Bg2 39.Rb5 Kf7 (39...Kg7+–) 40.Rb7?? (better 40.f5 gf5 41.Kf5 Bf3+–) 40...Ke8 (40...Bb7 41.Kd6 Kf6–+) 41.Kf6 (better 41.Rg7 Bf3 42.Kf6+–) 41...Bb7–+ 42.Kg6 Bf3 43.Kg5 (43.f5 Bg4–/+) 43...Kf8 (better 43...Kf7!? 44.Kf5–+) 44.Kf6 Kg8 45.Kg6 Kf8?? (45...Be2 46.f5 Bf3 47.f6=) 46.Kf6 Bg4 47.Kg6 (47.f5 Be2–+) 47...Ke7 (47...Be2 48.f5–/+) 48.Kg7 (48.f5 Kf8–/+) 48...Ke6 (48...Ke8 49.Kg6–/+) 49.Kg6–/+ Ke7 (better 49...Kd7 50.Kf6 Kd6–+) 50.Kg5?? (50.Kg7 Kd6–+) 50...Kf8?? (50...Kf7!? 51.f5–+) 51.Kf6?? (51.Kg6 Be2 52.f5–+) 51...Kg8 (51...Be2 52.f5–+) 52.Kg6 Kf8 (52...Be2 53.f5–+) 53.Kf6 Kg8?? (better 53...Be2–+) 54.Ke5?? (54.Kg6 Be2–/+) 54...Kf8?? (better 54...Kg7 55.Kd4–+) 55.f5?? (better 55.Kf6=) 55...Kf7–+ 56.Kf4 Kf6 57.Ke4 Bf5 58.Kf4 Bg4 (better 58...Kg6 59.Ke3–+) 59.Ke4 (59.Ke3 Be6–+) 59...Kg6 (better 59...Kg5 60.Ke3–+) 60.Kf4 Kf6 (60...Bf5 61.g4 hg4 62.Kg3–+) 61.Ke4 Ke6 (61...Kg5 62.Ke3–+) 62.Ke3 (62.Kf4 Kd5–+) 62...Ke5 (better 62...Kf5–+) 63.Kf2 (63.Kd3 Bf3 64.Ke3 Bh1–+) 63...Kd5 (63...Ke4 64.Kg2 Ke3 65.Kg1 Kf3 66.Kh2 Kf2 67.Kh1 Kg3 68.Kg1 Be2 69.Kh1 h4 70.Kg1 h3 71.Kh1 Bf3 72.Kg1 h2 73.Kf1 h1Q) 64.Kg2 (64.Ke3 Be6–+) 64...Kc4 65.Kf2 (65.Kf2 Kd3 66.Kf1–+). BeepBeepImAJeep (2640) – Batil (2330), lichess.org, 2016.

4.e3 e5 5.d4 e4 (better is 5...Bb4!? 6.Bc3 Bc3 7.Nc3 ed4 8.ed4 Nf5+=) 6.a3+= Bg7 7.Nd2 f5 8.Qc2 0–0 9.d5 Bb2 10.Qb2 Qf6 11.Qf6 Rf6 12.Ne2 c6 13.dc6 bc6 14.Nc3 Na6 15.c5 Nc7 16.Bc4 Kg7 17.0–0 (17.Be2 a5 18.ba5 Ra5+/–) 17...Ba6 (17...d5 18.Bb3=) 18.Rfd1 Ng4 (better is 18...d5!? 19.Ba6 Na6+=) 19.Ba6+– Na6 20.Nc4 Nc7? (better is 20...Rf7+/–) 21.Rd7+– Rf7 22.Rad1 Rb8 (22...Nb5 23.Nb5 cb5 24.Rf7 Kf7 25.Nd6 Ke7 26.Nb5 Ne5+–) 23.Rf7 (23.Rf7 Kf7 24.Rd7 Kg8 25.Rc7+–) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.e3 Nf7 5.d4 Bg7 6.c5 0–0 (6...d5 7.Nc3=) 7.Bc4 e6 8.Nf3 d5 9.Bd3 (9.cd6 Nd6 10.Be2 a5+=) 9...e5 10.de5 fe5 11.Qb3? (11.e4=) 11...d4?? (better 11...e4 12.Bg7 Kg7–+) 12.Bc4 (12.ed4 ed4 13.0–0+=) 12...Qf6? (better 12...a5=) 13.ed4+– ed4 14.Nbd2 (14.Bd4 Re8 15.Kf1 Qf4+–) 14...Kh8? (14...Nc6!?=) 15.0–0 (15.Bd4!? Qf5+–) 15...Ne5 (better 15...Nc6+–) 16.Ne4?? (better 16.Bd4 Nbc6 17.Be5 Ne5 18.Ne5 Qe5 19.Rae1+–) 16...Nf3–/+ 17.gf3 Qf3 (better 17...Qf4–/+) 18.Bd4?? (better 18.Qf3 Rf3 19.Ng5+=) 18...Qe4 (18...Qg4!? 19.Qg3 Bd4 20.Qg4 Bg4 21.Rac1–+) 19.Bg7 Kg7 20.Qc3 Rf6 (20...Kh6 21.Rae1 Qf4 22.Bd5–+) 21.Rae1 Qf3 (21...Qg4 22.Kh1 Nc6 23.b5–+) 22.Re7 Kh6 23.Qf3 Rf3 24.Bg8 (better 24.Rc7 Nc6 25.b5–+) 24...Bh3?? (better 24...Rf4 25.Rc7 Bd7–+) 25.Rh7+= Kg5 26.Re7?? (better 26.Bd5 Rf4 27.Rh3+–) 26...Nc6–+ 27.b5 (27.Bd5 Ne7 (worse 27...Bf1 28.h4 Kh6 29.Rc7–+) 28.Bf3 Bf1 29.Kf1 c6–+) 27...Nd4 (better 27...Ne7 28.Bc4 Bf1 29.Bf1 Raf8–+) 28.Re5 (28.Bd5 Raf8 (28...Bf1?! 29.Bf3 Bb5 30.Bb7–+) 29.a4 c6 (29...Bf1?! 30.Bf3 Bb5 31.ab5 Nf3 32.Kg2–+) 30.bc6 bc6–+) 28...Nf5 (better 28...Kf6 29.Re4 Rf5–+) 29.Kh1?? (29.Bd5 Bf1 30.Bf3 Bb5 31.Bb7–+) 29...Kf6 (better 29...Bf1 30.Bd5 Rf2 31.Kg1–+) 30.Re6 Kg5 31.Rg6?? (31.Re5 Bf1 32.Bd5 Rf2 33.Kg1–+) 31...Kg6–+ 32.Rg1 (32.Bd5 Bf1 33.Bf3 Rd8–+) 32...Kf6 33.Be6 (33.Be6 Ke6 34.Re1 Kd5 35.a4 Rf2 36.b6 Nd4 37.Rg1 Nf3 38.Rd1 Kc6 39.Rd6 cd6 40.cd6 Rh2). Agiant – squarecentral, lichess.org, 2019.

4.e3 Nf7 5.Nf3 Bg7 6.Be2 0–0 7.0–0 d6 8.Nc3 Nc6 9.Qb3 (9.b5 Na5+–) 9...e5 10.d4 f5 (10...ed4 11.ed4 Ng5 12.Rad1+–) 11.d5 Ne7 12.e4 f4 (12...a5 13.a3+=) 13.c5 g5 (13...Bd7 14.h3+–) 14.Rac1 (14.h3 Bf6+–) 14...Ng6 (14...g4 15.Nd2 Ng6 16.Kh1+=) 15.Nd2 (15.h3!?+–) 15...g4+= 16.Bd3 (16.Kh1 a5+=) 16...h5 (16...f3 17.g3= (17.gf3? Qg5 18.f4 Nf4–+)) 17.cd6 (17.f3 Ng5 18.Nb5 Nh4 19.cd6 cd6=+) 17...cd6+= 18.Nb5 Kh7 (18...f3 19.g3 (19.gf3 Bh6 20.Qc3 Qh4–+) 19...Ng5 20.Nc4=) 19.Nc7 (19.g3 f3 20.Nc7 Rb8+=) 19...Rb8 20.Ne6 Be6 21.de6 Ng5 22.f3 (22.a3 f3 23.a4 fg2 24.Kg2 Nh3–+) 22...Nh4 23.Be2 (better 23.Kh1 Qe7 24.Bc4+=) 23...Rg8? (better 23...g3 24.Kh1 gh2 25.Kh2 Rf6=) 24.fg4+– hg4 (24...Bh6 25.gh5 Ne4 26.Qd3 Rg2 27.Kh1 Re2 28.Ne4 (28.Qe2?! Nd2 29.Qd2 Kh8+–) 28...Re4 29.Qe4 Kh8 30.Rcd1+–) 25.Bg4 Bh6 26.Qd5 f3 (26...Qe7 27.Rc2 Rbe8 28.Bf5 Kh8 29.Nc4+–) 27.g3 (27.gf3 Ngf3 28.Nf3 A) 28...Bc1?! 29.Ne5 (29.Bc1? Rg4 30.Kh1 Nf3 31.Rf3 Qh4–+; 29.Rc1 Rg4 30.Kf2 Rg2 31.Kf1 Rb2–+) 29...Be3 30.Kh1 de5 31.Qe5–/+; B) 28...Rg4 29.Kh1 Bc1 30.Bc1 Nf3 31.Rf3 Qh4–+) 27...Ng6 (27...Ng2 28.Bf5 (28.Bf3?! Ne3 29.Qb3 Qe7+=) 28...Kh8 29.Nc4+– (29.Nf3?! Ne3 30.Ng5 Bg5+–)) 28.Bf5 (better 28.Kh1 Ne7 29.Qd3 Qb6+–) 28...Qe7? (28...Kh8 29.Kh1 Ne7+–) 29.Rcd1 Rg7 (29...Rbe8 30.Nf3 Ne6 31.Nh4+–) 30.Nf3 Nf3 31.Rf3 Rd8 (31...Kg8 32.Qd6 Qd6 33.Rd6 Re8+–) 32.Be5! (32.Be5 de5 33.Qd8+–) 1–0. DEFFM – OdinChudak, freechess.org, 2018.

4.e3 Bg7 5.f4 b6 (5...d6 6.Nf3=) 6.Be2 Bb7 7.Bf3 Nc6 8.b5 Na5 9.Bb7 Nb7 10.Nf3 0–0 11.0–0 Nf5 12.g4 (12.Qe2!?+=) 12...Nfd6= 13.Qb3? (13.Qc2 a6=) 13...Nc5 (better 13...Na5 14.Qc2 Nac4–/+) 14.Qc2= Nde4? (14...a6 15.d4 Ncb7 16.f5=) 15.d3 (better 15.d4+–) 15...Nd6+= 16.Nbd2 (16.d4 Ncb7+=) 16...f5 17.Bg7 Kg7 18.Qc3 Kg8 19.g5 Nf7 (19...a6 20.a4+=) 20.a4 a5 21.Rf2 d5 (21...Rc8 22.d4 Ne6 23.c5+=) 22.Nd4 (22.cd5 Nd3 23.Qd3+–) 22...Qe8 (better 22...e6!?+=) 23.cd5+– Nd6 (23...e5 24.de6! Ne6 25.N2f3+–) 24.N2f3 Nf7 (24...Rc8 25.Rc2+–) 25.Nc6 (better 25.Ne6!? Ne6 26.de6 Nd6+–) 25...Nd8 (25...Qd7 26.Nfd4+–) 26.Nfe5 (26.Nce5 e6 27.de6 Nde6+–) 26...e6 27.Qc4 ed5 28.Qd5 Kh8 29.Qd4 Nde6?? (29...Kg8 30.Re2+–) 30.Qc3 (30.Nf7! Kg8 31.Nh6) 30...Kg8+– 31.Rg2 Qd8?? (better 31...Nd8+–) 32.Nd8 (32.Nd8 Rad8 33.d4+–) 1–0. GuestKHVP – FredlesB, freechess.org, 2017.

4.a4 Nf7

5.b5 Bg7

6.Nc3 d6 7.e3 e5 8.Nf3 Nd7 9.Be2 0–0 10.d4 f5 11.0–0 e4 12.Nd2 Nf6 13.f3 (13.a5 a6+=) 13...ef3 14.Bf3 Re8 15.Re1 (15.e4 Bh6+=) 15...Ng5= 16.Bd5 (16.Nd5 Nf3 17.Qf3 a6=) 16...Nd5 17.Nd5 c6 18.Nf4 Bd7 19.h4 (19.Rb1 Ne4=) 19...Nf7 (19...Ne4 20.Ne4 Re4 21.Qb3–/+) 20.g3 (20.h5 g5 21.Nd3 cb5 22.cb5 a6=+) 20...Nh6 (20...a6 21.ba6 Ra6 22.Qb3=+) 21.Nf1 (21.h5 g5 22.Nd3 a6=+) 21...Ng4 The backward pawn on e3 becomes a target 22.Ng2 (22.Qf3 Nf6=+) 22...Qf6 (22...d5 23.cd5 cb5 24.ab5 Bb5 25.Qb3–/+) 23.Qf3 Qf7 24.Nh2? (better 24.Nd2!?–/+) 24...Nh2–+ 25.Kh2 Re7 (better 25...Qc4!? 26.h5 cb5–+) 26.Rac1–/+ Rae8 (26...a6 27.b6–/+) 27.Ba3=+ Bh6 Increases the pressure on the backward pawn (27...Re6!?=+) 28.Bd6= Re6 (28...Re4 29.Nf4=) 29.Bf4 (29.Be5 R6e7+=) 29...Bf4 (29...Bg7!?=) 30.Nf4+– R6e7 31.d5 (31.Nd3 a6 32.ba6 ba6+–) 31...c5 (31...Re4 32.Nh3 Qe7 33.Nf2 Re3 34.Re3 Qe3 35.Qe3 Re3 36.dc6 bc6 37.Rd1+=) 32.d6 (32.Nd3 b6+–) 32...Re4 33.Rcd1 (33.Nh3!? Qf6 34.Ng5 Re3 35.Re3 Qb2 36.Qg2 Qg2 37.Kg2 Re3 38.Rd1+=) 33...Be6 (33...Qc4 34.Ra1–/+) 34.Ne6 (34.h5!?=) 34...Qe6=+ 35.d7 (35.Rd5 Rc4 36.Red1 Rd8=+ (36...Qe3?? 37.Qe3 Re3 38.d7+–)) 35...Rd8–/+ 36.Qe2 (36.h5 Rd7 37.Rd7 Qd7–/+) 36...Rd7 37.Rd7 Qd7 38.Rd1 Qe7 39.Rd3 (39.Qd3 Kg7–/+) 39...Qe6 (39...f4 40.gf4 Rf4 41.Rd8 Qd8 42.ef4 Qh4 43.Kg2 Qf4 44.Qe6 Kg7 45.Qe7 Kh6 46.Qb7 Qd2 47.Kg3 Qd3 48.Kf2 Qc2 49.Kg3 Qb3 50.Kf2 Qb2 51.Kg3 Qe5 52.Kg2 Qe2 53.Kg3 Qc4 54.Qa7 Qd3 55.Kg4 Qe4 56.Kg3 Qe5 57.Kf3=+) 40.Kg2 (40.Qd2 A) worse 40...Rc4 41.Rd8 Kf7 42.Rd7 Ke8 43.Rd6+– (43.Rb7?! Ra4 44.Rb8 Kf7 45.Rb7 Ke8 46.Rb8 Kf7 47.Rb7 Ke8=); B) worse 40...Qc4 41.Rd7 Qb3 42.Rb7 Qe3 43.Qe3 Re3 44.Ra7+–; C) 40...Qe5 41.Kh3 Rc4 42.Rd8 Kg7 43.Rd7 Kh6 44.e4 f4=+) 40...Kf7 (40...Rc4 41.Rd8 Kg7 42.a5–+) 41.Qd2 Kg7?? (better 41...Rc4 42.Rd7 Ke8 43.Rh7 Ra4–/+) 42.Rd7+– Kh6 43.Qd5 (43.Rb7 Qc4 44.Ra7 Qg8+–) 43...Re3 (43...b6 44.Ra7 Qf6 45.Qd2+=) 44.Qe6 (44.Qb7?! Re2 45.Kh1 Re1 46.Kh2 Re2 47.Kh1 Re1 48.Kh2 Re2 49.Kh1=; 44.Qc5?? Qe4 45.Kh2 Re2 46.Qf2 Rf2 47.Kh3 Qg4; 44.Rb7?! Re2 45.Kh3 Qe3=) 44...Re6 45.Rb7 Re2 46.Kf3 Rc2 47.Ra7 The passed pawn on b5 quickly leads to threats 47...Rc3 48.Kf4 (48.Kf2 Rc2 49.Ke3 Rc3 50.Ke2 Rg3+–) 48...Rc4 49.Ke5 Rg4 (49...Re4 50.Kd5 c4+–) 50.b6 Rg3 51.b7 (51.Ra5!? Rb3 52.Rb5 Re3 53.Kd5 Re8+–) 51...Rb3 52.Kd5 (52.a5 Kh5+–) 52...c4? (52...f4 53.Kc6 c4–+) 53.Kc4+– Rb1 54.a5 g5 (54...Kh5 55.a6 Rc1 56.Kd3+–) 55.a6 (better 55.Ra6 Kh5 56.Rb6 Rc1 57.Kd4 Rd1 58.Kc3 f4+–) 55...gh4 56.Ra8 h3 (56...Rc1 57.Kd3 Rb1 58.b8Q Rb8 59.Rb8 Kg5 60.a7 Kg6 61.a8Q f4 62.Qc6 Kf5 63.Rb5 Kg4 64.Qg2) 57.b8Q Rb8 58.Rb8 h2 59.Rb1 Kg5 60.a7 Kg4 (60...h1R 61.Rh1 Kg4 62.a8Q Kf4 63.Rf1 Ke5 64.Qd5 Kf6 65.Rf5 Kg7 66.Qf7 Kh6 67.Qf6) 61.a8Q f4 (61...Kf4 62.Rf1 Ke5 63.Qd5 Kf6 64.Rf5 Kg6 65.Qf7 Kh6 66.Qf6) 62.Qh1 (62.Qg2 Kf5 63.Rb5 Kf6 64.Qc6 Ke7 65.Rb7 Kd8 66.Qd7) 62...Kg3 63.Rf1 f3 (63...h5 64.Qf3 Kh4 65.Qf4 Kh3 66.Qg5 h1Q 67.Rh1) 64.Qf3 (64.Qf3 Kh4 65.Qf4 Kh5 66.Qh2 Kg6 67.Qg3 Kh5 68.Rh1) 1–0. BeepBeepImAJeep (2685) – Viareggio69 (2050), lichess.org, 2017.

6.Nc3 0–0

7.e3 e5 8.Nf3 c6 9.Be2 d5 10.d4 Be6 11.Qb3 e4 (11...dc4 12.Bc4 Bc4 13.Qc4 cb5 14.Qb5+=) 12.Nd2 f5 13.f4 (better 13.bc6!? bc6 14.Qb7+–) 13...ef3= 14.Bf3 (14.Nf3!? dc4 15.Bc4 Bc4 16.Qc4=) 14...dc4–/+ 15.Nc4 Re8 16.bc6 Nc6?? (better 16...Bc4 17.Qc4 Nc6=+) 17.Qb7?? (17.d5 Nd4 18.ed4 Bd5 19.Ne2 Bd4 20.Bd4 Bf3 21.gf3 (worse 21.Qf3 Qd4 22.Rc1 Rac8–/+) 21...Qd4 22.Rb1=) 17...Bc4–+ 18.Qc6 Rc8 19.Qb7 (19.Qc8 Qc8 20.Kf2 Ng5–+) 19...Re3 20.Kf2 (20.Ne2 Be2 21.Be2 Rb8 22.Qb8 Qb8–+) 20...Re7 (better 20...Bd4 21.g3 Re2 22.Kf1 Rb2 23.Ne2 Rb7 24.Re1–+) 21.Nb5 Rb7 22.Bb7 Bb5 23.ab5 Bd4 24.Bd4 Qd4 25.Kg3 Rc3 (25...Qe5 26.Kf3 Ng5 27.Kf2 Rc2 28.Kf1 Qa1) 26.Bf3 Qe5 27.Kf2 Qe3 (27...Rc2 28.Be2 Qe2 29.Kg3 Qg4) 28.Kg3 f4 (28...Qg5 29.Kf2 Rc2 30.Be2 Qf4 31.Ke1 Qd2 32.Kf2 Qe2 33.Kg3 Qg4) 29.Kh3 (29.Kh4 Qf2 30.Kh3 Rf3 31.g3 Rg3 32.Kh4 g5 33.Kh5 Qf3) 29...Qe6 30.Kh4 Qf6 31.Kh3 Qf5 32.Kh4 (32.g4 Rf3 33.Kg2 Qg4) 32...Qh5 (32...Qg5 33.Kh3 Qh5) 33.Bh5+– g5 (33...gh5 34.Ra7 Rb3+–) 34.Kg4 Kg7 (34...Nd6 35.Ra7 Nb5 36.Ra5+–) 35.Bf7 (35.Ra7 f3 36.Rf7 Kh6 37.gf3 Rc4 38.f4 gf4 39.Rf6 Kg7+–) 35...Kf6 (35...Kf7 36.Ra7 Kf6 37.Rh7+–) 36.Ra6 (better 36.Ra7 Rc2 37.g3 f3+–) 36...Kf7 37.Ra7 Kg6 (37...Kf6 38.Ra6 Ke5 39.Kg5+–) 38.Ra6 Kg7 39.h4 (39.b6 Rb3 40.Kg5 h6 41.Kf4 Rb4 42.Ke5 Rb5 43.Kd6 Rb2+–) 39...Rc5 (39...gh4 40.Rh4 Rb3 41.Ra7 Kg8 42.Rh5 Rg3 43.Kf4+–) 40.hg5 Rb5 41.Ra7 Kg6 (41...Kg8+–) 42.Rh6 1–0. BeepBeepImAJeep (2635) – Batil (2375), lichess.org, 2016.

7.e3 e5 8.Nf3 d6 9.d4 Be6 10.Be2+= Nd7 (10...f5 11.0–0+=) 11.h3 Nb8 12.Qc2 Bc8 13.0–0 Bf5 14.e4 Be6 15.Rad1 a5 (15...f5 16.de5 Ne5 17.Nd4+–) 16.c5 dc5 17.de5 (17.dc5 Qe7 18.Nd5 Bd5 19.ed5 Rd8+–) 17...Qe7 (17...Nd7 18.ef6 Qf6 19.Ba1+–) 18.ef6 (18.Nd5 Bd5 19.Rd5 c6 20.ef6 Bf6 21.Bf6 Qf6 22.Rc5 Nd7+–) 18...Bf6 19.Nd5 Bd5 20.ed5 (better 20.Bf6!? Qf6 21.Rd5+–) 20...Bb2+= 21.Qb2 Nd7 22.Rfe1 Qf6 (22...Nb6 23.Qc2+=) 23.Qc2 (23.Qf6 Nf6 24.b6 cb6+=) 23...b6 24.Bf1 (24.Bc4 Nd6+=) 24...Rae8 25.Re4 (25.Bc4 Nde5 26.Ne5 Re5 27.Re5 Qe5=) 25...Nd6= Black gets in control 26.Re2 Re2 27.Qe2 Re8 28.Qc2 Ne5 29.Ne5 (29.Be2 Qf5 30.Qf5 Nf5=) 29...Qe5 30.Rd2 Qe4 31.Bd3 (31.Qd1 Qe1 32.Qc2 Re7=) 31...Qe5 (31...Qd5 32.Re2 Re2 33.Be2–/+) 32.Re2 (32.Bf1!?=) 32...Qa1=+ (32...Qd5?? 33.Re8 Kf7 34.Qe2 Ne8 35.Bc4 Qc4 36.Qc4 Ke7 37.Qg8+–) 33.Kh2 Re2 34.Be2 Qe5 35.g3 Qe4 The mate threat is Qxc2 36.Qd1 Qd4 37.Qc2?? (better 37.Qd4 cd4 38.Bd3=+) 37...Qf2–+ 38.Kh1 Qg3 (better 38...Nf5 39.Qd3 Ng3 40.Qg3 Qg3–+ (40...Qe2?! 41.Qc7 Qd1 42.Kh2=+)) 39.Bf1 (39.Bg4 Nf5–+) 39...Nf5 40.Bg2 (40.Qa2 Qe1 41.Kg1 Qe3 42.Kh1 Qe4 43.Kg1 Qd4 44.Kh1 Qd1–+) 40...Ne3 41.Qe4 Qg2 (41...Ng2 42.Qg2 Qg2 43.Kg2–+) 42.Qg2 Ng2 43.Kg2 Kf7 (43...Kg7!? 44.Kf3 Kh6 45.Ke4–+) 44.Kf3 Kf6 45.Kf4 g5 46.Kg4 (46.Ke4 h5 47.d6 cd6–+) 46...Kg6 47.h4 (47.Kf3 Kh5–+) 47...h5 48.Kg3 gh4 49.Kh4 Kf5 (better 49...c4!? 50.Kg3 c3 51.Kf4–+) 50.Kh5 Ke5 (50...c4!? 51.Kh6–+) 51.d6 Kd6 (51...cd6 52.Kg4–+) 52.Kg5 c4 53.Kf4 c3 (better 53...Kc5 54.Ke3–+) 54.Ke3 c2 (better 54...Kc5 55.Kd3 Kb4 56.Kc2–+) 55.Kd2 Kc5 56.Kc2 Kb4 57.Kb2 Ka4 58.Kc3 Kb5 59.Kb3 c5 60.Kc3 c4 61.Kc2 Kc5 62.Kb2 b5 63.Kc2 b4 64.Kd2 a4 65.Kc2 a3 66.Kb1 b3 (66...Kd4 67.Kc2 Ke3 68.Kb1 b3 69.Kc1 c3 70.Kb1 Kd2 71.Ka1 Kd1 72.Kb1 c2 73.Ka1 c1Q) 67.Kc1–+ Kb4 68.Kb1 c3 Black plans b2 69.Kc1 Kc4 (69...a2 70.Kd1 a1Q 71.Ke2 Qg1 72.Kd3 b2 73.Ke4 b1Q 74.Kf4 Qd4 75.Kg5 Qbg1 76.Kf5 Qgg4) 70.Kd1–+ Kd3 71.Ke1 b2 (71...Ke3 72.Kf1 Kf3 73.Kg1 a2 74.Kh2 c2 75.Kh3 c1Q 76.Kh2 Qd2 77.Kg1 a1Q) 72.Kf2 b1Q 73.Kf3 Qb4 74.Kg3 (74.Kf2 Qf4 75.Kg1 c2 76.Kg2 c1Q 77.Kh3 Qcf1) 74...Qe4 (74...c2 75.Kg2 Qh4 76.Kf3 c1Q 77.Kg2 Qch1) 75.Kf2 (75.Kh2 Qh4 76.Kg2 c2 77.Kf3 c1Q 78.Kg2 Qch1) 75...Qg4 76.Kf1 Qe2 77.Kg1 Ke3 (77...a2 78.Kh1 a1Q) 78.Kh1 Kf3 79.Kg1 Qg2 0–1. BeepBeepImAJeep (2595) – Batil (2345), lichess.org, 2016.

7.e3 e5 8.Nf3 d6 9.d4 f5 10.Be2+= e4 11.Nd2 g5 (11...Nd7 12.0–0+=) 12.a5 Nd7 13.a6 (13.0–0+–) 13...b6? (13...ba6!? 14.0–0 ab5 15.cb5 Bb7=) 14.d5 (14.f3!?+–) 14...Nf6 (14...Nc5 15.Nb3+=) 15.Qc2+– Nd7 (15...Ne5 16.0–0+=) 16.Nb3 (16.0–0 Nc5+–) 16...Nfe5 17.Nd4 (17.0–0 Nc5+=) 17...Nc5+= 18.0–0–0 (18.0–0 Ncd3+=) 18...Ncd3 19.Bd3 ed3 (19...Nd3 20.Kb1=) 20.Rd3 (20.Qb3 f4+=) 20...Nd3= 21.Qd3 Bd7 22.Nc6 Qe8 23.Kb1 Kh8 24.Ne2 (24.h4 g4=) 24...Qg6 (24...Bc6 25.dc6 Qe4 26.Qe4 fe4 27.Rf1=) 25.Ned4 (25.h4 Bb2 26.Kb2 Bc6 27.dc6 Qg7 28.Kb1 g4+=) 25...Rae8 (25...Qe8 26.f3+=) 26.g3 (26.Na7 Qh5+=) 26...Bc6 (26...Qh5 27.Na7 Qh3 28.Qf1+=) 27.bc6 (27.Nc6!? Bb2 28.Kb2+=) 27...Bd4 28.Qd4 Re5?? (better 28...Kg8=) 29.f4+– Rfe8 30.fe5 de5 (30...f4 31.e4 de5 32.Qd3+–) 31.Qd3 Qd6 (31...Kg8 32.Rf1+–) 32.Qf5 (32.Qf5 Qg6 33.Rf1+–) 1–0. BeepBeepImAJeep (2720) – Batil (2425), lichess.org, 2019.

7.e3 e5 8.Nf3 d6 9.Be2 Be6 10.d4 Nd7 11.d5 (11.0–0 Qe7+=) 11...Bg4= 12.h3 Bf3 13.Bf3 f5 14.Be2 e4 15.Qc2 Nfe5 16.Nb1 (16.0–0 Nc5=) 16...Nc5 17.0–0 Ned3 (17...Qh4 18.Nd2=) 18.Bg7= Kg7 19.Nc3 Qf6 20.f3 (20.a5 Rae8=) 20...Qe5 (20...Qg5 21.Nd1=+) 21.fe4 (21.a5 Qg3=) 21...fe4=+ 22.Rad1 Qg3 (better 22...Nb4 23.Qb2 Na2 24.Rf8 Rf8–/+) 23.Qd2?? (23.Ne4!? Qe3 24.Kh2 Qe4 25.Bd3 Qe5 26.Kh1 Rf1 27.Rf1=+) 23...Nb3 (23...Nf2 24.Rc1–+) 24.Qc2 (24.Ne4 Nd2 25.Ng3 Nf1 26.Rf1 Rf1 27.Kf1 Rf8 28.Kg1–/+) 24...Qe3–+ 25.Kh2 Nd4 (25...Rf1 26.Rf1 Nd2 27.Ne4 Nf1 28.Bf1 Qf4 29.Kg1 Qe4 30.Qd3–+) 26.Qd2 Qd2 27.Rd2 Ne2 (better 27...Nb3!? 28.Rf8 Rf8–+) 28.Rf8=+ Rf8 29.Re2 Nc5 30.Ne4 (30.Kg3 Re8=+) 30...Re8–/+ (30...Na4?! 31.Ra2 Rf4 32.Nd6= (worse 32.Ra4 Re4 33.Kg3 Kf6–/+)) 31.Nc3 Re2 32.Ne2 Na4 33.Nf4 (33.Nd4 Nb6–+) 33...Kf6 34.Ne6 Nb6 35.Nc7 Nc4 36.Kg3 Ke5 37.Kf3 Nb6 38.Ke2? (38.Ne6–+) 38...Nd5 39.Ne8 Nf4 (better 39...Ke6!? 40.Kd3–+) 40.Kf3 Ne6 41.Ke3 a5 42.ba6 ba6 43.Kd3 (43.h4 a5–+) 43...a5 (43...Nf4 44.Kc3–+) 44.Kc3 (44.g3 Ng5 45.h4 Ne4–+) 44...d5 (44...Nf4 45.g3 Nh3 46.Nc7–+) 45.Kd3 (45.g4–+) 45...d4 46.Kc4 (46.Nd6 Kd6 47.Kc2 a4–+) 46...a4 47.g3 (47.Kb4 d3 48.Kc3 a3–+) 47...g5 (47...a3 48.Kb3 d3 49.Nd6 Kd6 50.Kc3–+) 48.h4 gh4 49.gh4 h5 50.Kd3 a3 51.Kc2 d3! 52.Kd3 a2 53.Nf6 Kf6 54.Ke4 a1Q 55.Kf3 (55.Ke3 Qd4 56.Kf3 Qd3 57.Kg2 Nf4 58.Kf2 Qe2 59.Kg3 Qe3 60.Kh2 Qf2 61.Kh1 Qg2) 55...Qh1 (55...Qd1 56.Ke4 Nc5 57.Kf4 Qf1 58.Ke3 Qd3 59.Kf2 Ne4 60.Ke1 Qe3 61.Kd1 Qd2) 56.Kg3 (56.Ke2 Qh3 57.Kd1 Qd3 58.Ke1 Qc2 59.Kf1 Nf4 60.Ke1 Qe2) 56...Qg1 (56...Qf1 57.Kh2 Nf4 58.Kg3 Ke5 59.Kh2 Qg2) 57.Kh3 (57.Kf3 Ke5 58.Ke2 Nd4 59.Kd2 Qf2 60.Kc3 Qe3 61.Kc4 Qb3 62.Kc5 Qb5) 57...Qd4 (57...Nf4) 58.Kg3 (58.Kg2 Qe4 59.Kf1 Nf4 60.Kf2 Qe2 61.Kg3 Qe3 62.Kh2 Qf2 63.Kh1 Qg2) 58...Qg4 (58...Qe3 59.Kh2 Qf3 60.Kg1 Nf4 61.Kh2 Qg2) 59.Kf2 (59.Kf2 Nd4 60.Ke3 Ke5 61.Kd3 Qd1 62.Kc3 Qb3 63.Kd2 Qc2 64.Ke3 Qe2). BeepBeepImAJeep (2580) – Batil (2355), lichess.org, 2016.

7.e3 e6 8.Nf3 d5 9.Be2 (9.Qb3 c6+=) 9...c6 (9...dc4 10.Bc4 Nd6 11.Bb3+=) 10.d4 Nd7 (10...dc4 11.Ba3 Qa5 12.Qc2+=) 11.Qb3 Nb6 12.Nd2 (12.cd5 Nd5 13.bc6 bc6+=) 12...Kh8 (12...e5 13.c5 Nd7 14.0–0=) 13.0–0 Bd7 (13...e5 14.bc6 bc6 15.a5 dc4 16.Nc4+–) 14.a5 Nc8 (14...Nc4 15.Nc4 dc4 16.Bc4 cb5 17.Nb5+–) 15.a6 (15.Ba3 Re8+–) 15...ba6 (15...Rb8 16.Ba3 Re8 17.bc6 Bc6 18.cd5 ed5 19.Bc5+–) 16.bc6 Bc6 17.Ra6 Ne7 (17...Qd7 18.cd5 ed5 19.Ba3+–) 18.Ba3+– Rb8 (18...Bd7 19.Bc5+–) 19.Qa2 Bb7? (19...Nd6+–) 20.Ra7 (20.Re6 Re8 21.Re7 Re7 22.Be7 Qe7 23.Qa7 Ra8+–) 20...Nc6 (20...Qc7 21.Rb1 Rfc8 22.cd5 Nd5 23.Nd5 ed5 24.Qb2+–) 21.Ra4 (21.Bf8 Bf8 22.Ra4 Nb4+–) 21...Re8 (21...Ne7 22.Rb1+–) 22.cd5 ed5 23.Qd5 Qd5 24.Nd5 Nd4 (24...Ra8 25.Bb5+–) 25.Rd4 (worse 25.ed4 Re2 26.Rb4 Rd2–/+) 25...f5 26.Rd3 (better 26.Bc5!? Kg8 27.Nb6 Bd4 28.Bd4 Red8+–) 26...Ne5 27.Nc7 Rec8 28.Bd6 (28.Rb3 Rc7 29.Bd6 Rbc8 30.Bc7 Rc7+–) 28...Nd3 29.Bd3 Bf8 (29...h6 30.Rd1+–) 30.Be5 (30.Bg3 Bg7 31.Nb5 Ra8+–) 30...Bg7 31.Bg3?? (31.Bg7 Kg7 32.Rc1 Kf6+–) 31...Bc6?? (better 31...Rd8 32.Nb3 Rd3+–) 32.Nc4 (better 32.Ne6 Ra8 33.Ng7 Kg7 34.Be5 Kh6 35.Rd1+–) 32...Bb5? (32...Rb3 33.Be2 h6+–) 33.Nb5 Rb5 34.Nd6 Rd8 (34...Rd5 35.Bf5! Rf8+–) 35.Nf7 (35.Nf7 Kg8 36.Nd8+–; 35.Bb5 Ra8+–) 1–0. BeepBeepImAJeep (2575) – Batil (2360), lichess.org, 2016.

4.b5 Nf7

5.a4 Bg7 6.Nc3 0–0 7.e3 d6 8.Nf3 e5 9.Be2 f5 10.d4 e4 (10...Nd7 11.0–0+=) 11.Nd2 c6 12.Qc2 (12.0–0 Qg5+=) 12...d5 (12...Qg5 13.0–0+=) 13.g3 (13.Ba3!? Re8 14.bc6 bc6 15.cd5 cd5 16.Bb5+–) 13...Be6= 14.h4 (14.bc6 Nc6 15.cd5 Bd5 16.Nd5 Qd5+=) 14...Nd7 (14...dc4 15.h5=) 15.Ba3 Re8 16.bc6 bc6 17.cd5 (17.Rb1 Nb6=) 17...cd5 18.Nb5 (18.h5 g5=) 18...Rc8 19.Qa2 (19.Nc3 h5=) 19...a6=+ 20.Nd6 Nd6 21.Bd6 Qb6 (21...Rc6 22.Qa3=+) 22.Ba3 (22.Bf4!?=) 22...Rc6 (22...Qa5 23.Bd6=+) 23.0–0 (23.Rb1 Qc7=+) 23...Rec8 (23...Qa5 24.Rfc1 Qa4 25.Rc6 Qc6 26.Rc1=+) 24.Rab1 (24.Rfc1 Rc1 25.Bc1 Rc3–/+) 24...Qa7 (24...Qa5 25.Bb4 Qd8 26.Qa3=+) 25.Rb2 (25.Rfc1 Rc1 26.Rc1 Rc1 27.Bc1 Qa8=+) 25...Nb6 (25...Qc7=+) 26.Bc5 (better 26.Qb3=+) 26...Qc7?? (better 26...Rc5!? 27.dc5 Bb2 28.cb6 Qb6 29.Ba6 Ra8–/+) 27.Bb6 (better 27.Ba6!? Ra8 28.Bb5 Rc5 29.dc5 Qc5 30.Rc2+–) 27...Rb6=+ 28.Rfb1 Rb2 29.Qb2 Bf8 (better 29...Qd6!?=) 30.Ba6+– Rd8 31.Bb5 (31.Qb6 Qe7+–) 31...Bd6 32.Nf1 (32.Nb3 Qe7+=) 32...h6 (32...Rb8 33.Qd2+=) 33.Rc1 Qb8 34.Qc3 (34.h5 g5+=) 34...g5 Black prepares f4 (34...Rc8 35.Qd2+=) 35.hg5+– hg5 36.Qa5 f4 37.Rc6 fg3 (37...Kf8 38.Ra6+=) 38.fg3+– Rf8 (38...Kf7!? 39.Rb6 Bc7 40.Rb8 Ba5 41.Rd8 Bd8+–) 39.Qb6 Bg3?? (better 39...Qb6 40.Rb6 Rd8+–) 40.Qb8 (40.Re6 Bf2 41.Kg2 Qb6 42.Rb6 Bh4+–) 40...Bb8 41.Re6 Rf1 (41...Kf7 42.Rb6 Rd8+–) 42.Kf1 Kf7 (42...Kg7 43.Re8 Ba7 44.Re7 Kg8 45.Ra7 g4 46.a5 g3 47.a6 g2 48.Kg2 Kf8 49.Rd7 Ke8 50.a7 Kf8 51.a8Q) 43.Rc6 Bg3 (43...Ke7 44.Rc8 Kd6 45.Rb8+–) 44.Ke2 Ke7 45.Rd6 (better 45.a5 Kd8 46.Rc5+–) 45...Bd6+= 46.Bc6 Kd8?? (better 46...Ke6+=) 47.Bd5+– Kc7 48.Be4 The passed pawn on e3 quickly leads to threats 48...Kb6 49.Bf3 Ka5 50.Kd3 (50.Bc6 g4+–) 50...Ka4 51.e4 Ka5 (51...Kb5 52.e5 Bf8 53.Ke4+–) 52.e5 Kb6 (52...Bf8+–) 53.ed6 Kb5 (53...g4 54.Be4 g3 55.Bg2 Kb5 56.d7 Ka5 57.d8Q Ka6 58.Qa8 Kb6 59.Qb7 Ka5 60.Kc4 Ka4 61.Qb4) 54.Ke4 (54.d7 g4 55.Bg4 Kb4 56.d8Q Kb5 57.Qd5 Kb6 58.Bc8 Kc7 59.Qb7 Kd6 60.Qd7) 54...Kc6 55.Bg4 (55.Bg4 Kd6 56.d5+–; 55.Ke5 Kd7+–) 1–0. BeepBeepImAJeep (2605) – abricot (2170), lichess.org, 2016.

5.a4 Bg7 6.Nc3 0–0 7.e3 e5 8.Nf3 d6 9.Be2 c6 (9...g5 10.0–0+=) 10.d4 Be6 (10...f5 11.0–0+=) 11.0–0 Nd7 (11...f5 12.d5 cd5 13.Nd5+=) 12.Qc2 (12.d5 Bg4 13.dc6 bc6 14.bc6 Qb6+–) 12...Nb6 13.c5 dc5 14.dc5 Nd5 15.Rad1 (15.Nd5 cd5 16.a5 a6+=) 15...Qe7 16.Bc4 (16.Nd5 cd5 17.Rc1 Rfc8+=) 16...Rfd8 (better 16...Ne3 17.fe3 Bc4–/+) 17.Qb3 Nc7 (17...Rac8 18.Nd5 cd5 19.Bd5 Rd5 20.Rd5 Bd5 21.Qd5 Rc5 22.Qb3+=) 18.Rd8 (18.e4 Bc4 19.Qc4 Ne6=) 18...Rd8= 19.Ne4 (19.Rd1 Rd1 20.Nd1 Bf8 21.bc6 bc6=) 19...Bc4 20.Qc4 Qe6 21.Qc2 (21.Qb4 f5 22.Nc3 b6=) 21...Rd5 (better 21...cb5!? 22.ab5 Nb5–/+) 22.Ba3 h6 (22...cb5 23.Nc3 Rd7 24.Nb5=) 23.Nc3+= Rd8 24.Qg6 Qb3 25.Nb1 (25.b6!? Qc3 26.bc7+–) 25...Qa4 (25...cb5 26.Nfd2 Qa4 27.Ne4=) 26.b6 Nb5 27.ba7? (27.Bc1=+) 27...Na7?? (better 27...Na3!? 28.Na3 Qa3–+) 28.g3 (28.Bc1 Rd1 29.Nfd2 Nb5=) 28...Rd1 (28...Nb5 29.Bc1=+) 29.Rd1= Qd1 30.Kg2 Nb5 31.Nh4 Qd5 32.e4 Qd7?? (better 32...Qd3 33.Bb4 Qb1=) 33.Nf5+– Threatening mate: Qxg7 33...Nh8 (33...Nd8 34.Nh6 (34.Qg7 Qg7 35.Ng7 Kg7–/+; 34.Ng7?! Qg7 35.Qf5 Na3 36.Na3 Qe7=) 34...Kh8 35.Nf5+–) 34.Nh6 (34.Qg7?! Qg7 35.Ng7 Kg7=) 34...Kf8 35.Qg4 (better 35.Qh7 Qe6 36.Bb2+–) 35...Qg4+– 36.Ng4 Bh6?? (better 36...Kf7 37.Bb2 Ng6+–) 37.Nh6+– (37.Nh6 Nd4 38.h4+–) 1–0. BeepBeepImAJeep (2760) – OngongIII (2330), lichess.org, 2016.

5.e3 Bg7 6.a4 0–0 7.Ne2 a6 8.Ng3 ab5 9.ab5 Ra1 10.Ba1 c6 11.Qc1 (11.Nc3 cb5 12.Nb5 d5+=) 11...e5 12.Nc3 d5 13.Nce4?? (13.bc6 bc6 14.h4 d4=+) 13...dc4?? (better 13...de4!? 14.Ne4 cb5 15.cb5–+) 14.Be2? (14.bc6 b5 15.d3 A) 15...cd3? 16.c7 d2 17.Nd2+– (worse 17.Qd2 Qc7 18.Bb5 f5=+); B) 15...Nc6 16.dc4 Qa5 17.Nd2 b4=+) 14...Nd7?? (better 14...cb5 15.Qb1 Bd7–+) 15.Bd3?? (15.bc6 Nb6=) 15...c5 (15...cd3!? 16.bc6 Qc7 17.Qb1 Qc6 18.0–0–+) 16.Ng5?? (better 16.Bc4 Qe7 17.h4=) 16...Nb8 (better 16...cd3 17.Ne6 Qa5 18.Nf8 Bf8–+) 17.Ke2?? (17.Ke2 Qd3 18.Ke1 fg5 19.h4–+; 17.Nh7 Qd3 18.Nf8 Kf8 19.h4–+). RichardSommer (1945) – Mnumnik (1950), lichess.org, 2020.

5.e3 Bg7 6.a4 0–0 7.Ne2 b6 8.Ng3 Bb7 9.Qc1 (9.d4 a6=) 9...d5 (9...a6 10.d4=+) 10.h3 (10.cd5 Bd5 11.e4 Bb7+=) 10...c5 (10...a6 11.cd5 ab5 12.ab5 Ra1 13.Ba1 Qd5 14.d4= (14.Qc7? Rc8 15.Nc3 Rc7 16.Nd5 Rc1 17.Ke2 Bd5–+)) 11.Nc3 (11.cd5 Bd5 12.a5=) 11...Nh6 (11...dc4 12.Bc4 Bg2 13.Rg1–/+) 12.Nd1 (12.cd5 Nd7+–) 12...g5 (12...a6 13.cd5 Bd5 14.e4=) 13.Ne2 (13.cd5 Bd5 14.a5 Nd7+=) 13...f5 (13...e5!?=) 14.f3 (better 14.h4!? g4 15.Nf4 Bb2 16.Nb2+–) 14…Re8 (14...Re8 15.cd5 Qd5 16.Bg7 Kg7+=; 14...e5!?=+). RichardSommer (2030) – Too_slow_2_weak (1905), lichess.org, 2020.

5.e3 Bg7 6.a4 0–0 7.Ne2 d6 8.Ng3 e5 9.Qc1 (9.Be2 Be6=) 9...Nd7 10.Nc3 a5 (10...f5 11.Be2=+). RichardSommer (2065) – lidongyuan (2090), lichess.org, 2020.

3.d4 b6

4.e4 Bb7 5.f3 e6 6.b5 (6.a3 c5+=) 6...d5 7.ed5 Bd5 8.c4 Bb7 9.Nh3 Bd6 10.Qc2 Nd7 11.c5 (better 11.Bd3!?+=) 11...bc5=+ 12.g3? (12.Bc4!?=+) 12...e5 (12...cd4 13.Be2 e5 14.Nd2–+) 13.Qd3? (13.de5 Ne5 14.Bg2 Bf3 15.0–0 Bg2 16.Qg2–/+) 13...Nb6?? (13...ed4 14.Nd2–+) 14.Na3? (14.de5 fe5 15.Nd2 Nf6=+) 14...Bd5?? (14...cd4 15.Bg2–+) 15.Rc1? (better 15.de5 fe5 16.Bg2=+) 15...ed4 (15...cd4 16.Bg2–+) 16.Be2 f5 17.Qd2 Qe7 (17...Ba2!? 18.0–0 Qf6 19.Nf2–+) 18.0–0 Ba2 (18...Nf6 19.Rfe1 0–0 20.Nf4–+) 19.Rfe1–/+ h6?? (better 19...Kf8–/+) 20.Bc4+– Be5? (better 20...Nc4 21.Nc4 Bc4 22.Rc4 Rb8+–) 21.Ba2 Nf6 (21...Nd7 22.Nf4 Qf6 23.Nd5+–) 22.f4 (better 22.Nf4 Qd6 23.Re5 Qe5 24.Re1+–) 22...Ne4 23.Qd3 Bg7 (23...Bd6 24.Nf2 Kd8 25.Ne4 fe4 26.Re4+–) 24.Nf2 c4 (24...Kd8 25.Ne4 fe4 26.Re4 Qf8+–) 25.Nc4 Nd5 (25...Nc4 26.Bc4 0–0–0 27.Ne4 Rhe8+–) 26.Ba3 (26.Ne4!? 0–0 27.Ne5 Rad8 28.Qd4 fe4 29.Bd5 Kh7 30.Qe4 Be5 31.Qe5 Qe5 32.Re5 Rd7+–) 26...Nb4 27.Bb4 (27.Ne4 Nd3 28.Ned6 Kf8 29.Re7 Ke7 30.Nf7 Ke8+–) 27...Qb4 28.Ne4 fe4 (28...0–0–0 29.Ne5 Rhe8+–) 29.Qe4 Kf7 (29...Be5 30.Qe5 Kd8 31.Qh8 Kd7 32.Ne5 Ke7 33.Qg7 Ke8 34.Qd7 Kf8 35.Ng6) 30.Nd6 Kf8 (30...Kf6 31.Qe6) 31.Rc7 (31.Qa8) 31...Qd6 (31...Qe1 32.Qe1 Be5 33.fe5 Rh7 34.Qf2 Rf7 35.Qf7) 32.Qa8 (32.Qa8 Qd8 33.Qd8) 1–0. patrick317 – wilfredshunk, gameknot.com, 2017.

4.Nf3 Bb7 5.Nc3 Nc6 (5...e5 6.de5 Bb4 7.a3=) 6.b5 Na5 7.e4 Nc4?? (better 7...e6+=) 8.Bc4+– a6 9.ba6 (9.a4 e6+–) 9...Ba6 10.Ba6 Ra6 11.Qd3 Qc8 (11...Ra5 12.0–0+–) 12.0–0 Bg7 (12...Ra5 13.Nd2+–) 13.a4 Qb7 (13...Ra5 14.Rfe1+–) 14.Ba3 (better 14.Rfe1 Ra5+–) 14...b5 (14...c6+–) 15.ab5 Ra3 (15...Ra8 16.Bc5 Ra1 17.Ra1+–) 16.Ra3 1–0. Pierre – Sears, internet, 2020.

3.d4 d5

4.a4 e5 5.c3 (5.b5 Nd7=) 5...e4 6.e3 Bd6 (6...Ne7 7.b5=) 7.g3 (7.Qb3!? Be6 8.c4 dc4 9.Bc4 Bc4 10.Qc4=) 7...Nh6 8.h3 (8.Nd2 Be6=) 8...Be6 9.g4? (9.Ne2 0–0=+) 9...g5 (9...f5 10.Ne2 0–0 11.g5 Qg5 12.h4–+) 10.f3 (10.Nd2 f5 11.Qb3 Qf6–/+ (11...fg4?! 12.Ne4 g3 13.Ng3=)) 10...Nc6 (10...f5 11.fe4 fe4 12.Ne2–+) 11.a5 (11.fe4 Bg3 12.Kd2 de4–/+) 11...Qe7 (11...0–0!? 12.fe4 Bg3 13.Kd2 de4 14.b5–/+) 12.b5–/+ Nd8 13.f4?? (better 13.fe4 de4 14.Ne2–/+) 13...gf4 (13...f5!? 14.Ne2 gf4 15.Nf4 Qh4 16.Kd2 Bf4 17.ef4 fg4 18.Kc2–+) 14.ef4 Bf4 15.Ba3 Bg3 16.Ke2 (16.Kd2 Bd6–+) 16...Qd7 (16...Bd6!? 17.a6 ba6 18.Bd6 cd6 19.Ra6–+) 17.Kd2 Bf4 (17...f5 18.Ne2 Bd6 19.Kc2 fg4 20.Qd2–+) 18.Kc2 Qb5?? (better 18...a6 19.Bc1 Bg5 20.ba6 ba6–+) 19.Bb5+– c6 20.Be2 (20.Qf1 Bg5 21.Be2 Bh4+–) 20...f5 21.g5! Nhf7 (21...Bg5 22.a6 Combination) 22.h4 Bd6 (22...Bc7 23.Bh5+–) 23.Bd6 Nd6 24.Bh5 (24.Nh3!? Bf7+–) 24...Bf7 25.Be2 h5?? (25...Be6 26.Nh3 Bf7+–) 26.Nh3 Ne6 27.Nd2 (27.Qd2 0–0–0+–) 27...0–0–0 (27...f4 28.a6 b6 29.Kb2+–) 28.Rf1 Bg6 (28...Kb8 29.a6 b6 30.Nf4+–) 29.Nf4 Nc7 (29...Nf4 30.Rf4 Kc7+–) 30.Ng6 Rhe8 31.Ne5 (31.a6 b6+–) 31...e3 32.Nb3 Ne4 33.Rg1 (33.a6 ba6 34.Rf5 Re6+–) 33...Nf2 34.Qc1 Nh3 35.Rf1 f4 36.Rf3 Nf2 37.Rf4 Ne6 38.Rf7 c5 39.Qe3 (39.a6 b6 40.Qe3 Ne4 41.dc5 bc5+–) 39...Ne4 40.Bh5 (better 40.a6 b6+–) 40...Rh8 41.Bg4 Rde8 42.dc5 (42.Qf4 Nf6 43.Nc6 Nd7 44.Qd6 Nd4 45.Nbd4 Re2 46.Ne2 bc6 47.Rd7 Rh4 48.Qc7) 42...Rh4 43.c6 Rh2 44.Be2 (44.Kd3 Nf2 45.Qf2 Rh3 46.Kd2 b5 47.ab6 Kb8 48.Rb7 Kc8 49.Rc7 Kb8 50.Nd7 Ka8 51.Rca7) 44...b6 45.ab6 d4 (45...Nd4 46.Nd4 Nd6 47.Rc7 Kd8 48.Nf7 Nf7 49.Rd7 Kc8 50.Qe8 Nd8 51.Qd8) 46.Qe4 (46.Rc7 Nc7 47.b7 Kd8 48.b8Q Ke7 49.Qc7 Ke6 50.Qd7 Ke5 51.cd4) 46...d3 (46...Re2 47.Qe2 d3 48.Qd3 Re7 49.Re7 Nd4 50.Qd4 ab6 51.Ra8) 47.Nd3 Nd4 (47...Re2 48.Qe2 Nd4 49.Nd4 Re2 50.Ne2 Kd8 51.c7 Ke8 52.g6 ab6 53.c8Q) 48.Qd4 (48.Nd4 Re2 49.Ne2 Rh8 50.Rfa7 Kd8 51.Ra8) 48...Rhe2 (48...Ree2 49.Kd1 Rd2 50.Nd2 Rh1 51.Kc2 Rc1 52.Rc1 ab6 53.Qh8) 49.Nd2 R8e4 (49...R2e7 50.Re7 Re7 51.Ra7 Ra7 52.Qh8) 50.b7 Kb8 51.Qd8 (51.Qa7) 1–0. patrick317 – bbhollaway, gameknot.com, 2017.

4.e3 e6 5.Ne2 (better 5.a3!?+=) 5...Bb4–/+ 6.c3 Ba5 7.Qa4 Nc6 8.Na3 Nge7 9.Nc1 a6 10.Nb3?? (better 10.Qd1–/+) 10...b5–+ 11.Nb5 (11.Nb5 ab5 12.Qb5–+). MARYMARY – VickiTee, ChessWorld.net, 2017.

3.d4 e6

4.a3 Nc6 5.Nf3 d5 6.e3 a6 7.c4 Nb4? (better is 7...Nge7+=) 8.ab4+– Bb4 9.Nbd2 c5 10.dc5 Bc5 11.Be2 Ne7 (11...dc4 12.Bc4 Bd7 13.0–0+–) 12.Bf6 Rf8 (12...0–0 13.Bc3+–) 13.Bg5 Qd6 14.Be7 Qe7 15.0–0 e5 (15...dc4 16.Bc4 Bd7 17.Ne4+–) 16.cd5 Bg4 17.h3 Bf3 18.Nf3 e4 19.Nd4 Bd4 20.Qd4 (worse is 20.ed4 Qd6+–) 20...Rd8 21.Rfd1 Qf7 (21...Rf6 22.Qc3+–) 22.Qe4 Kd7 (22...Qe7 23.Qa4 Qd7 24.Qd4+–) 23.Qe6! (23.Qe6 Qe6 24.de6 Ke6 25.Rdb1+–) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.b5 d5 5.e3 Bd7 6.Nd2 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 b6 10.c4 Bb4 11.Ngf3 Ne7 12.Be2 0–0 13.0–0 Qe8 14.Qa4 Ba5 15.Nb3 dc4 16.Bc4 Nd5? (better is 16...c6 17.bc6 Nbc6+/–) 17.Na5+– ba5 18.Qa5 Qc8 19.Bd5 ed5 20.Rc1 c6 21.b6 Qa6 22.Qa6 Na6 23.Ra1 Nb8? (23...Bc8+–) 24.Ba3 Re8 (24...c5 25.dc5 Nc6 26.Rd1+–) 25.Bd6 f5 (25...g5+–) 26.Ra8 c5 27.dc5 Bc6 28.Rb8 Rb8 29.Bb8 Kf7 (29...Bb7+–) 30.Ne5 Ke6 31.Nc6 1–0. typ48 – batez, playok.com, 2012.

3.d4 Bg7

4.c4 f5 5.Nf3 Nf6 6.Nc3 Ne4 (6...0–0 7.b5+=) 7.e3+/– 0–0 8.Bd3 Nc3 9.Bc3 d6 10.Qb3 (10.h4 e5 11.de5 de5+=) 10...Be6 (10...a5 11.b5+=) 11.Ng5 Bf7 12.Nf7 Rf7 13.c5 d5 14.0–0 (14.h4 e6+/–) 14...Kh8 15.b5 a6 16.a4 ab5 17.ab5 Ra1 18.Ra1 Nd7? 19.Qd5 Rf8 20.Ra7 e5 21.Rb7 ed4 22.Bd4 Bd4 23.ed4 Nf6 24.Qd8 Rd8 25.Rc7 Rd4 26.Bf1 Rd8 27.c6 Nd5 28.Rd7 Rd7 29.cd7 (29.cd7 Kg7 30.d8Q Nf4 31.Qd4 Kf8 32.b6 Kf7 33.Qf4 Kg7 34.b7 Kf6 35.b8Q Kg7 36.Qbe5 Kf8 37.Bc4 h6 38.Qh6#) 1–0. gtate (2555) – miodrag (1950), net–chess.com, 2007.

4.c4 Nh6 5.b5+=.

4.d5 c6 5.c4 (5.e4 d6+=) 5...Na6 (5...e6 6.d6+=) 6.a3 Nh6 7.e4 0–0 8.c5 f5 (8...b6 9.Bc4 Nf7 10.Qe2+=) 9.Ba6 (better 9.Bg7 Kg7 10.Qd4 Kg8 11.Ba6 ba6 12.Nf3+–) 9...Bb2= 10.Ra2 Bg7 11.Bc4 e6 (11...Kh8 12.Re2=) 12.dc6 (12.de6 de6 13.Nf3 b5 14.cb6 ab6=) 12...bc6 13.ef5 (13.Re2 Qg5 14.g3 fe4=+) 13...gf5 (13...Nf5 14.Nf3=+) 14.Nf3 Ng4 (14...a5 15.Qa4+=) 15.h3 (15.Qd6 a5+=) 15...Ne5 (15...Nf6 16.Nd4 Nd5 17.0–0+=) 16.Ne5 Be5 17.0–0 (17.Rd2 Qc7+=) 17...Qc7 18.f4 (18.Re1 a5=) 18...Bf4 19.Rf4?? (better 19.Kh1=) 19...Qf4–+ 20.Nd2 (20.Qd3 Qc1 21.Kh2 a5–+) 20...Rf6 (20...a5 21.Qb3–+) 21.Qe2 (21.Kh1 a5 22.Qa4 Rg6–+) 21...Rg6 (21...a5 22.Nf3–+) 22.Nf3 (22.Nb3 Rg3–+) 22...Kg7 (22...a5 23.Kh1–+) 23.Qe5 Qe5 24.Ne5 Rh6 (24...Rg3!? 25.Nd3–+) 25.Rd2 Rh4 26.Bb3 (26.Bf1 a5 27.Nd7 Bd7 28.Rd7 Kf6–/+) 26...Kf6 (26...a5 27.Nd7 ab4 28.ab4 Ra1 29.Kh2 Rb4 30.Be6–+) 27.Nd7 Bd7 28.Rd7 Rg8 (28...a5 29.ba5 Ra5 30.Rd6–+) 29.Kh2 (better 29.Rd6 Rg3 30.Be6 Ra3 31.Bg8 Kg5 32.Rc6–/+) 29...Ke5 (29...a5 30.Rd6 Re4 31.Rc6 ab4 32.ab4–+) 30.Rd6 (better 30.Ra7 Rh6 31.Ba4=) 30...f4?? (better 30...Rg6 31.Rc6 Rd4–+) 31.Re6+– Kd4?? (31...Kf5 32.Re7 Rg6+–) 32.Rc6 (better 32.Rd6 Kc3 33.Bg8 Kb2 34.Rc6 Ka3+–) 32...Ke3?? (better 32...Rg3 33.Rd6 Ke5 34.Rd5 Kf6+=) 33.Re6 (better 33.Bg8 Rh5 34.Rc7+–) 33...Kf2 34.Rf6?? (better 34.Bd5+–) 34...Rg2 35.Kh1 f3 (35...Rh3) 36.Rf3=+ Kf3 37.Bd5 Re4?? (better 37...Kg3 38.Bg2 a5 39.ba5 Ra4–+) 38.Be4+– Ke4 39.Kg2 Kd5 40.Kg3 a5 41.ba5 (better 41.Kf4 h6 42.Kg4 h5 43.Kh5 Kc6+–) 41...Kc6 (41...Kc5 42.Kg4 Kb5+–) 42.Kg4 (better 42.a6!? Kc7+–) 42...Kc5 43.a6 Kb6 44.Kg5 Ka6 45.Kh6 Ka5 46.Kh7 Ka4 47.h4 Ka3 48.h5 Kb4 49.h6 Kc5 50.Kg7 Kd6 51.h7 1–0. afsharian – padinjak, lichess.org, 2018.

4.e4 e6 5.Nf3 Ne7 6.Bd3 d5 7.0–0 de4 8.Be4 e5 (better 8...g5!?+=) 9.de5+– f5 10.Bd3 Nd5 11.Qd2 Nc6 (11...Qe7 12.a3+–) 12.b5 Ncb4? (better 12...Nce7+–) 13.Bc4 Be6 (13...a6 14.Bb3 ab5 15.c3+–) 14.a3 Nb6 (14...Nc2 15.Qc2 Qe7 16.Re1+–) 15.Be6 (15.ab4?! Bc4 16.Re1 Qd2 17.Nbd2 Bb5+–; 15.Qb4?! Nc4 16.Nbd2 Nb2 17.Qb2 Qe7+–) 15...Qd2 16.Nbd2 Nc2 (16...N4d5+–) 17.Rac1 Ke7 18.Bb3 Na3 (18...Rhd8 19.Rc2 Rac8 20.Nd4+–) 19.Rc7 (19.Rc7 Kd8 20.Rg7 Nb5 21.e6+–) 1–0. Pierre – GuestVathb, internet, 2020.

4.Nf3 d6 5.d5 (5.Nc3 f5+=) 5...e6 (5...Nh6 6.Nc3+=) 6.e3 (6.Nc3 Ne7 7.e4 0–0+=) 6...Ne7 (6...ed5 7.Qd5 Ne7+=) 7.de6 (7.Nc3!?+/–) 7...Be6= 8.Bd3 (8.Nc3 Nbc6=) 8...0–0 9.0–0 Nd7 (9...Nbc6 10.b5 Ne5 11.Nc3=) 10.Nbd2 (10.Nc3 Ne5=) 10...c5 (10...Nd5 11.a3=) 11.b5 (11.bc5 Nc5 12.Nd4 Bf7=) 11...Bg4 (11...d5 12.c4=) 12.h3 Bf3 13.Nf3+= Ne5 14.Ne5+/– fe5 15.Rb1 d5+= 16.c4 Kh8 17.cd5+/– Qd5 18.a4 Qa2?? 19.e4 Rad8 20.Qe2 Qe6 21.Bc4 Qf6 22.f4 Qh4 23.fe5+– Rf1 24.Kf1?? Qf4+= 25.Qf3 Qf3? 26.gf3+/– Rd2 27.Ba1 Rh2 28.Kg1 Rh3 29.Kg2 Rh5 30.Rd1 Rg5?? 31.Kf2 Be5 32.Be5 Re5 33.Rd8 Kg7 34.Rd7 b6 35.Ra7 Kf6 36.Rb7 h5 37.Rb6 Kg5 38.Re6 Re6 39.Be6 Kf6 40.Bc4 Nc8 41.f4 Nd6 42.e5 (42.e5 Ke7 43.ed6 Kd6 44.a5+–) 1–0. mic (2225) – miodrag (1945), net–chess.com, 2007.

4.Nf3 e6 5.e3 Ne7 6.c4 0–0 7.h4 (7.h4 d5 8.a3=). Woelfelschneider,Peter – Stoelzel, 2010.

4.Nf3 f5 5.c4 +=.

3.e3 b6

4.b5 Bb7 5.Nf3 a6 6.a4 (6.c4 Nh6+–) 6...d6 (6...ab5 7.ab5 Ra1 8.Ba1+=) 7.d4 (7.Nc3 ab5 8.ab5 Nd7+–) 7...e5 (7...ab5!? 8.Bb5 c6+–) 8.de5+– fe5 (8...de5 9.Qd8 Kd8 10.Ne5+–) 9.Ne5! de5 (9...Nf6 10.ba6 Ra6 11.Bb5 c6 12.Ba6 Na6 13.Nd3+–) 10.Be5 (10.Qd8 Kd8 11.Be5 Bb4 12.Nd2 Ke7 13.Bh8 Nf6+–) 10...Qd1 11.Kd1 Bc5? (better 11...Nf6 12.Bf6 Rg8+–) 12.Bh8 Ne7 (12...Ke7 13.Bc3+–) 13.Nd2 (13.a5 ba5 14.Ra5 Bb6+–) 13...Nd7 (13...a5 14.Ke1+–) 14.ba6 Ba6 15.Ba6 Ra6 16.Ne4 Nf5 17.Ke2 Nh4 (17...Nd6 18.Ng5+–) 18.Nf6 (18.g4!? Be7+–) 18...Nf6 19.Bf6 Ng2 (19...Nf5 20.Bc3+–) 20.Rhg1 Ne3 (20...Kf7 21.Bd8 (21.Rg2?! Kf6 22.f4 Be7+–) 21...Ra8 22.Bc7+– (22.Rg2?! Rd8 23.Rd1 Bd6+–)) 21.fe3 Kf7 (21...b5 22.Rg5 Bf8 23.a5+–) 22.Rgf1 Kg8 (22...Ke6 23.Bc3+–) 23.Rad1 (23.Rad1 Bd6 24.Rd4+–) 1–0. GuestPCMV – GuestWCCB, freechess.org, 2019.

4.b5 Bb7 5.Nf3 e5 6.Be2 Nh6 7.0–0 Nf5 8.g4 (8.d4 e4 9.Nfd2 a6+=) 8...Nh6 9.g5 d6?? (better 9...Nf7=) 10.gh6+– Bh6 11.Nc3 Nd7 12.Bc4 Qe7 (12...a6 13.a4+–) 13.Nd5 Bd5 (13...Qd8 14.d4+–) 14.Bd5 0–0–0 15.Qe2 (15.a4 f5+–) 15...Nc5 (15...f5 16.a4+–) 16.Qc4 f5 Black intends e4 17.d4 e4 (17...ed4 18.ed4 (18.Qd4?! Rhf8+–; worse 18.Bd4 Bg7+–) 18...Qf6 19.Rab1+– (worse 19.dc5 Qb2 20.Qa4 a5 21.ba6 b5+–)) 18.dc5 ef3 19.Bf3 Qg5 (19...Bg7 20.cb6 ab6 21.Bc6 Qg5 22.Kh1+–) 20.Kh1 Rhe8 21.cb6 ab6 22.Rg1 Qe7 23.Qa4 d5 (23...Kd7 24.Bc6 Ke6 25.Qb3 d5 26.Rad1+–) 24.Rad1 Rd6 (24...Kb8 25.Rd5 Rd5 26.Bd5+–) 25.Bd5 (25.Bd5 c6 26.Bc6 Rc6 27.Qa8 Kc7 28.Qc6 Kb8 29.f3+–) 1–0. DEFFM – GuestWDMQ, freechess.org, 2017.

4.b5 c6 5.a4 a6 6.Be2 ab5 (6...d5 7.Nf3=) 7.ab5+= Ra1 8.Ba1 c5 (8...d5 9.Nf3+=) 9.Nf3 e5 10.Ne5 fe5 11.Be5 Nf6 12.Bb8 d6 13.Nc3 Bd7 (13...Bb7 14.Ba7 Bg2+–) 14.Ba7+– Qa8 (14...Bg7!?+–) 15.Bb6+– Qg2 16.Bf3 Qh3 17.Nd5 Nd5 18.Bd5 Qf5 (18...Bg7 19.c4+–) 19.e4 Qe5 20.Qf3 Qe7 21.d4 cd4 22.Qa3 Bg7 (22...Be6 23.Qa8 Kf7 24.Bd4 Rg8+–) 23.Qa8 Qd8 (23...Bc8 24.Qc8 Qd8 25.Qd8) 24.Qd8 1–0. GuestQWGR – GuestQRGB, freechess.org, 2018.

4.c4 Bb7 5.Nf3 Bg7 6.c5 Nh6 (6...a5 7.cb6 ab4 8.bc7 Qc7 9.a3+=) 7.Bc4 (7.d4 d6+=) 7...e6 (better 7...a5=) 8.Ng5?? (8.d4!?+=) 8...0–0 (8...Bg2 9.Rg1 A) 9...fg5?? 10.Bg7 Rg8 11.Bh6+– (11.Rg2?! Rg7 12.d4 a5=); B) 9...Bb7–/+) 9.Be6? (9.Nf3 a5 10.a3 Nc6=) 9...de6 (better 9...Kh8!? 10.Nh7 Kh7–+ (10...de6?! 11.Nf8 Qf8 12.Qc2+=)) 10.Ne6=+ Qe7 (10...Qd5 11.Qb3 Qb3 12.ab3 Rf7–/+ (12...Bg2?! 13.Rg1=)) 11.Nf8= Kf8 12.0–0 Nd7 13.d4 (13.Qc2 bc5 14.bc5 Qe4 (14...Nc5? 15.Ba3 Kg8 16.Bc5+–) 15.Qe4 Be4+=) 13...Qe4=+ Threatening mate... how? 14.Qf3 f5 (14...Qf3!? 15.gf3 bc5 16.bc5 Bf3=+) 15.Nd2 (15.Qe4 fe4 16.cb6 cb6+=) 15...Qf3= 16.Nf3 bc5 17.bc5 c6 (17...Ke7 18.Bc3+=) 18.Rab1 Ba6 19.Rfe1 Nf6 (19...Bd3 20.Rbd1 Be4 21.Ba1+=) 20.Ne5 Bb5 21.Bc3 a6 22.Ba5 Nd5 (22...Nf7 23.Nf7 Kf7 24.Rb2+=) 23.Nd7+– Ke7 24.Nb6 Ng4?? (better 24...Nb6 25.cb6 Rb8+–) 25.Na8+– h5 (25...Kf7 26.Nb6+–) 26.Nc7 (26.Nb6 Kf7+–) 26...Ndf6 (26...Nc7 27.Bc7 Kf7 28.Bf4+–) 27.a4 Bd3 (27...Ba4 28.Rb7 Nd7 29.Na6+–) 28.Rb3 Bc4 29.Rc3 (29.Rb4 Be6+–) 29...Ba2 (29...Bd5 30.f3 Nh6 31.Na6+–) 30.Na6 (better 30.f3 Nh6 31.Na6 Ke6+–) 30...Nd5 (30...Ne4 31.Rc2 Bb3 32.Rb2+–) 31.Nb4 (better 31.Ra3 Bc4 32.Nb8+–) 31...Nc3 32.Na2 Na2 33.Ra1 Bd4 (33...f4 34.Bd2 fe3 35.fe3 Nb4 36.Bb4 Ne3+–) 34.ed4 Nc3 (34...Nc1 35.Rc1 Nf6 36.Bb6+–) 35.Bc3 Ke6 (35...Nf6 36.a5 Nd5+–) 36.a5 Kd5 37.a6 Nf6 38.a7 Nd7 39.a8Q Nf6 (39...f4 40.Qa2 Ke4 41.Re1 Kf5 42.Qf7 Kg5 43.h4 Kg4 44.Qg6 Kh4 45.g3 fg3 46.Qg3) 40.Qa2 Ke4 41.Qe6 (41.Qe2 Kd5 42.Re1 g5 43.Qe6) 41…Kf4 (41...Kd3 42.Ra3 Nd5 43.Ba1 Kc4 44.Qe2 Kb4 45.Qb2 Kc4 46.Qb3) 1–0. aravind555 (1770) – Federica1795 (1745), lichess.org, 2020.

4.c4 Bb7 5.Nf3 Bg7 6.d4 d6 7.Be2 (7.d5 Qd7+–) 7...h5? (7...Nh6!?+–) 8.0–0 (8.d5 Qd7+–) 8...c6 (8...e5 9.Nc3+–) 9.Qc2 (better 9.Nc3 Na6+–) 9...Qd7? (9...f5 10.Nc3 Qd7 11.Nh4+–) 10.Nh4 (10.Qg6!? Kf8+–) 10...f5 (10...g5 11.Qg6 Kf8 12.Nf5+–) 11.Ng6 Rh6 12.Nf4 c5 (12...Na6 13.Bh5 Kd8 14.a3+–) 13.Bh5 (13.bc5 Nc6 14.Bh5 Kd8+–) 13...Kd8 (13...Kf8 14.Ng6 Rg6 15.Bg6+–) 14.bc5 dc5 (14...Nf6 15.Bg6 Be4 16.Qe2 bc5 17.d5 Bd5 18.cd5 (18.Nd5?! Rg6 19.Nf4 Rh6+–) 18...Nd5 19.Nd5 Rg6 20.Bg7 Rg7 21.Qh5+–) 15.d5 e6 (15...Bb2 16.Qb2 Nf6+–) 16.Ne6 Re6 17.de6 Qc6 (17...Qe7 18.Bf7 Bb2 19.Qb2 Nf6+–) 18.Bf3 Qe6 19.Bb7 Bb2 20.Qb2 Qd6 21.Ba8 Nh6 22.Qh8 Kc7 23.Nc3 Ng4 24.Nb5 Kd7 1–0. DEFFM – rogry, freechess.org, 2018.

4.Bc4 d5 5.Bb3 e6 6.a3 Bd7 7.Nf3 a5 8.ba5 Ra5 9.Bc3 Ra6 10.h3 (10.d3 c5=) 10...h5 11.d4 Nc6? (11...c5 12.dc5 bc5 13.Qd3=) 12.Qe2 (better is 12.Qd3!? Ra7 13.Qg6 Ke7 14.0–0+/–) 12...Qa8 13.a4 (13.e4 de4 14.Qe4 Nce7+=) 13...Bb4 (13...Na5 14.Nbd2=) 14.Bb4+= Nb4 15.c3 Nc6 16.0–0 (16.e4 de4 17.Qe4 Nce7+=) 16...Nh6 (16...g5 17.Nfd2=) 17.Nbd2 (17.e4 Na5 18.Bc2 Kd8+/–) 17...Nf5 (17...g5 18.Ne1=) 18.e4+/– de4 19.Ne4 0–0 20.Rfd1 Na5 21.Bc2 Bc6 22.c4 Be4 (22...Nb7!?+=) 23.Be4+/– Qe8 24.c5 Ra7 25.cb6 cb6 26.d5 ed5 27.Bd5 Kg7 28.Qb2+– Qb8 29.Ng5 Kh6 30.Qd2?? fg5–+ 31.Rab1 Rc7 32.Be4 Nc4 33.Qd5 Rd8?? 34.Qe6?? Rf8?? 35.Rbc1?? Nb2 36.Rc7 Nd1?? 37.Rc6 Qe8 38.Qd5?? Ne7–+ 39.Qd1 Nc6 40.Bc6 Qc6 41.f3 Ra8 (42.Kh1 Ra4–+) 0–1. kingsknight59 – Pawno Paul, ChessWorld.net, 2005.

4.h3 Bb7 5.Nf3 e6 6.c4 Bb4 7.a3 Be7 8.Nc3 e5 9.Nd5 Bd5 10.cd5 c6 11.dc6 Nc6 12.Be2 Qc7 13.0–0 0–0–0 14.d4 ed4 15.Nd4 Nd4 16.Rc1 Bc5 17.Bd4 Kb8 18.Bc5 bc5 19.Qb3 Ka8 20.Bf3 d5 21.Bd5 Rd5 22.Qd5 Kb8 23.Rc5 Ne7 24.Rb1 Kc8 25.Rc7 Kc7 26.Qb7 1–0. riditko – pepepepe777, playok.com, 2012.

3.e3 Nc6

4.b5 Na5 5.a4 d6 6.Nf3 Bg4 7.Bc3 c6 8.Be2 Bf3 (8...e5!?+=) 9.Bf3+/– e5 10.bc6 (better is 10.d3 Ne7 11.0–0+/–) 10...Rc8? (better is 10...Nc6 11.d4 Bg7+/–) 11.cb7+– Rb8 12.0–0 (better is 12.Qe2 Nb7 13.Qb5 Ke7 14.d4+– (14.Bb7?! Qc7+–)) 12...Nc4?? (12...Nb7 13.Bd5+–) 13.d3 (better is 13.Bc6 Ke7 14.Qg4 Nb6+–) 13...Na5 14.Qd2 (14.Ba5!? Qa5 15.c4 f5+–) 14...Nb7 15.Bc6 Ke7 (15...Kf7 16.d4+–) 16.Ra2 (16.Bd5 Ke8+–) 16...Qc7 (16...Kf7 17.d4 Qc8 18.Bd5 Kg7 19.Rb2+–) 17.Bb7 (17.Bd5!? Bg7+–) 17...Rb7 18.Na3 Bh6? (18...Kf7 19.f4+–) 19.Qe1 (19.Bb4!? Bf8+–) 19...Qc6 (19...Kf7 20.Bb4 Qc6 21.f4 ef4 22.Nc4+/–) 20.Nb1 (20.Nc4 Rd7+–) 20...f5? (20...Kf7 21.Bb4+/–) 21.Qd1 (better is 21.Na3+–) 21...Nf6+= 22.Rb2 Nd5 (better is 22...Rhb8!? 23.Rb7 Rb7+=) 23.Rb7+– Qb7 24.Ba1 Be3 25.fe3 (better is 25.Qf3!? Bc5 26.Nc3+/–) 25...Ne3+= 26.Qc1?? (26.Qe2 Nf1 27.Qf1 Rb8+/–) 26...Nf1 (26...Qg2) 27.Kf1 f4 (27...Rb8 28.Nc3+=) 28.Nc3 f3 29.Qg5 (29.g3!?+/–) 29...Kf7 (29...Ke8 30.Nb5 fg2 31.Qg2 Rf8 32.Kg1 Qb6 33.d4=) 30.g3 (30.Nb5 Qc6 31.Qe3 Rf8 32.gf3 Kg7=) 30...Qb6 (better is 30...f2 31.Kf2 Qh1=) 31.Nd5?? (better is 31.Qh6+=) 31...Qb1–+ 32.Kf2 Qc2 (32...Qa1?? 33.Qf6 Kg8 34.Ne7) 33.Kf3 Qd3 34.Kg4?? (34.Ne3–+) 34...Qd5 35.Kh3 h6 36.Qc1 (36.Qg4 Qd3 37.Qd7 Kf6 38.Be5 Ke5 39.Qg7 Ke6 40.Qh8 Qf1 41.Kh4 g5 42.Kh5 Qh3 43.Kg6 Qf5 44.Kg7 Qf6 45.Kh7 Qh8 46.Kh8 g4–+) 36...Qe6 37.Kg2 Rc8 38.Qf1 Kg7 (38...Qf5 39.Qf5 gf5 40.Kf3–+) 39.Qe2 (39.Qf2 a5–+) 39...Qd5 (39...Qf5!? 40.g4 Rc2 41.gf5 Re2 42.Kf3–+) 40.Kg1 (40.Kh3–+) 40...Rc1 (41.Kf2 Ra1–+) 0–1. Familyfork – okie, Live Game Caissa's Web, 2004.

4.b5 Na5 5.Bc3 Nc4?? (better 5...c6+=) 6.Bc4+– a6 (6...d5 7.Bb3+–) 7.Nf3 (7.ba6 ba6 8.e4 e6+–) 7...ab5 8.Bb5 c6 9.Be2 e5 10.0–0 Ne7 11.d4 e4 12.Nfd2 f5 (12...d5 13.Bb4+–) 13.d5! cd5 (13...cd5 14.Bh8 Discovered attack; 13...Nd5 14.Bh8 Discovered attack) 14.Bh8 Bh6 15.Nb3 Nc6 (15...Kf7 16.Bd4+–) 16.Qd5 Ne7 17.Qd6 Bf8 18.Bc4 b6 (18...Nc6 19.Qd5 Qe7 20.Nc3+–) 19.Qf6 Ra6 (19...d5 20.Bg7 Bg7 21.Qg7 Ba6 22.Ba6 Ra6+–) 20.Qf7 1–0. DEFFM – KENR, freechess.org, 2018.

4.b5 Na5 5.d4 d5 +=.

4.b5 Nb4 5.c4 c5 (5...a6 6.a3 ab5 7.ab4 Ra1 8.Ba1 bc4 9.Bc4+–) 6.a3 Nd3?! (6...Nc6 7.bc6 dc6 8.Nf3+–) 7.Bd3 Bg7 (7...d5 8.Qf3+–) 8.Nf3 b6 (8...e5 9.Bc2+–) 9.Be4 f5 (9...Rb8+–) 10.Bg7 (10.Bg7 fe4 11.Ng1+–) 1–0. DEFFM – GuestSYLD, freechess.org, 2018.

4.b5 Nb8 5.c4 (5.e4 d5+=) 5...c6 (5...a6 6.ba6 Na6 7.d4+=) 6.a4 b6 7.Nf3 d6 (7...e5 8.Nc3+=) 8.Be2 c5 (8...e5 9.0–0+–) 9.0–0 Be6? (better 9...a6+–) 10.Ng5!!+– Bd7 (10...fg5 11.Bh8 Pinning (11.Bh8 Deflection)) 11.Bf3 e5 12.Ba8 fg5 13.d4 Bg7 14.dc5 dc5 15.a5! h5 (15...ba5 16.Bc3 Decoy) 16.Be4 Ne7 17.ab6 Qb6 18.f4 0–0 (18...gf4 19.ef4 Qe6 20.Qe2+–) 19.Be5 1–0. DEFFM – GuestXNQV, freechess.org, 2017.

4.b5 Ne5 5.f4 Nf7 6.Nf3 e6 7.Be2 Bg7 8.0–0 Ne7 9.a4 0–0 10.c4 d5 11.c5 (11.cd5 Nd5 12.Nc3 c5+=) 11...c6 12.Nc3 Nf5 (12...e5 13.Qb3=) 13.e4 Ne7 14.e5 (better 14.Qb3!?+=) 14...fe5=+ 15.Ne5 Ne5 16.fe5 Be5 17.Rf8 Kf8 (17...Qf8 18.d4 Bg7 19.Na2–/+) 18.Qf1 (18.d4 Bg7=) 18...Kg7 19.Nd1 Bb2 20.Nb2 Bd7 (20...Nf5 21.Qf2–/+) 21.Qf4 Nf5 22.Qe5 (22.Re1 Qb8 23.Qf2 e5=+) 22...Qf6 23.Qf6 (23.Qc7 Rf8 24.Rf1 Qb2 25.bc6 bc6 26.Qd7 Rf7 27.Qc6 Qd2 28.Bb5–+) 23...Kf6–/+ 24.Rf1 Ke7 25.g4 Nd4 26.Bd3? (better 26.bc6 Ne2 27.Kf2–+) 26...e5 27.bc6 (27.Kf2 Bg4 28.Re1 Kf6–+) 27...Nc6 (27...bc6!? 28.h3–+) 28.g5 (28.Be2 Rc8 29.Re1 Kf6–+) 28...e4 (28...Nd4 29.Kg2–+) 29.Bb5 a6 (29...Bh3 30.Bc6 bc6 31.Rf2–+) 30.Bc6 bc6 31.d4 (31.Re1 Be6–+) 31...Bf5 (31...Rb8 32.Rf2–+) 32.Nd1 (32.Re1 Rb8 33.Nd3 Kd7 34.Ne5 Kc7–+) 32...Rb8 33.Ne3 Ke6 34.Nf5 (34.a5 Rb4 35.Rd1 Rb3–+) 34...gf5 35.h4 (35.Rf4 Rb4 36.Rh4 Rd4 37.Rh7–+) 35...Rb4 36.Rd1 (36.h5 Rd4 37.Rb1 e3–+) 36...e3 (36...a5 37.h5–+) 37.Kf1 (37.h5 f4 38.g6 hg6–+) 37...f4 38.Ke2 Ra4 39.Kf3 (39.Rb1 Ra2 40.Kd3 Ra3 41.Ke2 Kf5–+) 39…Kf5 (39...Kf5 40.Rd3 Ra2 41.Re3 fe3 42.Ke3 Rh2–+) 0–1. Abdullaevich (1845) – ulaaser (1815), lichess.org, 2020.

3.e3 d6

4.c4 h5 5.Nc3+– Bg4 (5...Nh6 6.Nf3+–) 6.Nf3+– Nc6 (6...Nd7 7.Qc2 Bf5 8.Bd3+–) 7.d4 e5 (7...Nh6 8.b5 Na5 9.h3 Bf3 10.Qf3+–) 8.b5 (8.b5 Na5 9.h3+–) 1–0. Pierre – Ochoa, internet, 2019.

4.c4 Nh6!?+=.

4.Nf3 e5 5.Be2 h5 6.Nc3 b6 (6...d5 7.a3+=) 7.d4+– Ba6? (better 7...e4 8.Ne4 d5+–) 8.Ba6+– Na6 9.Qd3 Nb4 10.Qg6 (10.Qb5 Qd7 11.Qb4 c6+–) 10...Kd7 11.de5 Nc2? (11...de5 12.0–0–0 Bd6 13.Qg7 Ne7 14.Qf6 Nec6 15.Qf5 Ke8+–) 12.Qc2 (12.Qc2 de5 13.Rd1 Bd6 14.Ne4+–) 1–0. Janek – zandar, internet, 2017.

4.Nf3 Be6 5.Nd4 Bf7 6.Nc3 Bg7 (6...e5 7.Nb3+–) 7.Qf3+– c6 8.b5 e5 (8...Qd7 9.Bd3 Nh6+–) 9.bc6 bc6 10.Nc6 Nc6 11.Qc6 Kf8 12.Ba3 Ne7 (12...Nh6 13.Bd6 Kg8 14.Ba6+–) 13.Bd6 Rc8 14.Qa6 1–0. Sinja – Hetre, internet, 2019.

4.Nf3 Bg7 (--> 3.e3 Bg7 4.Nf3 d6).

4.Nf3 Nh6 5.Be2 Bg7 (5...e5 6.0–0+=) 6.b5 (6.0–0 d5+=) 6...0–0 7.0–0 e5 8.d4 e4 9.Nfd2 f5 10.c4 Nd7 11.Nc3 a6 12.Qb3 Kh8 13.Nd5 ab5 14.cb5 (14.Qb5? c6 15.Qb4 cd5 16.Qd6 dc4 17.Nc4 Qh4–+) 14...c6 15.Nf4 Nb6 (15...Nf6 16.Rfc1 c5 17.Bc4+=) 16.Rfc1 d5 (16...Bd7!?+–) 17.bc6+– bc6 18.Rc6 Rb8 (18...Rf6 19.Rc5+–) 19.Nd5! Bb7 (19...Nd5 20.Qb8 Pinning (20.Qb8 Deflection); 19...Qd5 20.Rb6 Deflection (20.Rb6 Overloading)) 20.Rb6 (20.Qb6?! Bc6 21.Qc6 Rb2=) 20...Bd5 21.Rb8 Bb3 (21...Qb8 22.Qd5 Qb2+–) 22.Rd8 (22.Rb3?! Qa5 23.Nc4 Qd5+–) 22...Rd8 23.ab3 1–0. Adlai – DbQbc, internet, 2019.

3.e3 e5

4.a3 b6 5.Nc3 Bb7 (5...d5 6.h4+–) 6.Nf3 (6.e4 a5 7.b5 Bc5+–) 6...d5+= 7.Be2 (7.h4 Nh6+=) 7...c6 (7...Ne7 8.h4+=) 8.0–0+– c5 (8...Ne7!?+–) 9.bc5 Bc5 (9...bc5!? 10.Rb1 Nd7+–) 10.d4+– ed4 11.Nd4 Qd6? (11...Qd7+–) 12.Ncb5 Qd7 (12...Qe5 13.Rb1 Na6 14.c4+–) 13.Bg4 f5 14.Ne6!! a6 (14...Qe6 15.Nc7 Double attack (15.Bh8 Discovered attack; 15.Nc7 Decoy)) 15.Nbc7 (15.Nbc7 Ke7 16.e4 de4 17.Qc1+–) 1–0. Pierre – Mirrimond, internet, 2020.

4.a3 Nc6 5.c4 a6 (5...d5 6.cd5 Qd5 7.Nc3+=) 6.Nc3 Nce7 (6...Nge7 7.Nf3+=) 7.Nf3 Nh6 (7...a5 8.d4+=) 8.d4+– ed4 (8...Bg7 9.Be2+–) 9.Nd4 d5 (9...Bg7!?+–) 10.Qf3+– Bg7 11.cd5 f5 12.Ne6 Be6 13.de6 Qd6?? (better 13...Qc8+–) 14.Nb5 (14.Qb7 Rd8 15.Ba6 Qd2 16.Kf1 Bc3 17.Bc3 Qc3–/+) 14...Qd8 (14...ab5 15.Bg7 0–0–0 16.Bb5 Qe6 17.Bh8 Rh8+–) 15.Bg7 c6 (15...ab5 16.Qb7 c6 17.Bb5+–) 16.Rd1 Qc8 (16...Nd5 17.Nc3 Rg8 18.Bh6 Nc3 19.Rd8 Rd8+–) 17.Nd6 (17.Nd6 Kd8 18.Nf5 Ke8 19.Nd6 Kd8 20.Qf6 Qe6 21.Qe6 Nd5 22.Rd5 cd5 23.Nb7 Kc7 24.Be5 Kb7 25.Qd7 Kb6 26.Bd4) 1–0. pcmvr – nerob, net–chess.com, 2017.

4.a3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 g6).

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bb4 8.c4 c6 (8...d6 9.Nf3 Ne7 10.Qb3+=) 9.Qb3+– Qe7 (9...Qa5 10.Bc3 c5 11.Bb2+–) 10.Nf3 cb5 (10...e4 11.Ng5 Bc5 12.Be2+–) 11.cb5+– Qc5 (better 11...d5 12.Nc3 Bc3 13.Qc3 Bf5 14.Ne5 Nh6+–) 12.Nc3 d6 13.Bc4 Ne7 (13...Bc3 14.Bc3 Nh6+–) 14.Ne4 Qc6 (14...Qa7 15.Bb2 Bc5+–) 15.bc6 (15.bc6 Nbc6 16.Nf6 Kf8 17.Ng5+–) 1–0. DEFFM – heahio, freechess.org, 2019.

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 (8.d4 ed4 9.Bd4 d5+=) 8...cb5= 9.cb5 Qa5 (9...d5 10.d4 e4 11.Bc3=) 10.Nc3 Ne7 11.Nf3 d5 12.Be2 Nf5? (12...Be6+=) 13.Kf1?? (13.Nd5 Bg7+–) 13...h5 (better 13...Be6=+) 14.Nd5+– Kf7?? (14...Bg7 15.e4 Nd6 16.d4 Ne4 17.de5 fe5 18.Be5 Be5 19.Ne5+–) 15.g3 (15.Nf6 Bd6 16.Ne5 Be5 17.Be5 Rd8+–) 15...g5?? (15...Nd7 16.d4 e4 17.Nd2+–) 16.Kg2 (better 16.Nf6 Bd6 17.Ne5 Be5 18.Be5+–) 16...g4+– 17.Nh4 (17.Ne1 Be6 18.Nc3 Nd6+–) 17...Nh4+= 18.gh4 f5? (better 18...Bf5!? 19.Nc3 Ke8+=) 19.Bc4 (better 19.Be5 Bg7 20.Bg7 Kg7 21.Qc2+–) 19...Kg6?? (19...Bd6 20.Bc3 Qd8 21.Qa1+–) 20.Qb3 (better 20.Be5 Bg7 21.Bb8 b6+–) 20...Qd8?? (better 20...Bd6+–) 21.Be5+– Qh4 (21...Bd6 22.Bh8 Qh8+–) 22.Nf4 Kg5 (22...Kh6 23.Bh8 Qe7+–) 23.Bh8 Bd6 24.Be6 (24.Qc3 Qf2 25.Kf2 Be5 26.Qe5 g3 27.hg3 h4 28.Qg7) 24...Bf4 25.ef4 (25.Qb2 Qh2 26.Rh2 Be5 27.Qe5 h4 28.Qf5 Kh6 29.Rh4) 25...Kf4 26.Qe3 1–0. GuestZVTQ – GuestGPKP, freechess.org, 2018.

4.b5 b6 5.c4 Bb7 6.Nf3 Qe7 7.Be2 d6 (7...a6 8.0–0+=) 8.0–0+– Nd7 9.d4 0–0–0 (9...a6 10.Nc3+–) 10.a4 e4 11.Nfd2 f5 12.a5 Ngf6 13.ab6 Nb6? (better 13...ab6 14.Nc3 Bh6+–) 14.Ra7 (better 14.c5 dc5 15.dc5+– (15.Ra7?! cd4 16.Bd4 Kb8+–)) 14...Kd7 (14...Kb8 15.Ra5 h5+–) 15.c5 dc5 (15...Rb8 16.cb6 cb6 17.d5+–) 16.dc5 Bd5 (16...Nbd5 17.Rb7 Ke8 18.b6+–) 17.cb6 (17.cb6 Ke8 18.bc7+–) 1–0. BeepBeepImAJeep – almekenol, lichess.org, 2018.

4.b5 c6 5.a4 b6 6.Nc3 Bb7 (6...d5 7.Nf3=) 7.Nf3 Ne7 (7...d5 8.Be2+=) 8.d4+– d6 9.Ne4 (9.de5 de5 10.Qd8 Kd8 11.Rd1 Kc7+–) 9...Nd5 10.de5 (10.a5+=) 10...fe5 (10...de5 11.c4 Bb4 12.Ke2+–) 11.Nfg5 (11.Bc4 Nf6 12.Neg5 d5 13.Ne5 Bb4 14.c3 Qe7 15.cb4 dc4+–) 11...Qe7? (better 11...h6!? 12.Ne6 Qh4+–) 12.Qf3 (better 12.Bc4 h6 13.Ba3+–) 12...h6?? (better 12...Qg7+–) 13.Nd6! Qd6 (13...Kd7 14.bc6 Nc6 A) 15.Qd5?! Qd6 16.Qf7 Qe7 17.Rd1 Kc8 18.Qe7 A1) 18...Ne7?? 19.Be5 Rg8 20.Bc4 Bg2 21.Rg1+– (21.Bg8 Bh1 22.Be6 Kb7+–); A2) 18...Be7+–; B) 15.Ngf7+–) 14.Qf7 Kd8 15.Ne6 (15.Qb7 Qb4 16.Ke2 Qb2 17.Ne6 Ke8 18.Qa8 Bd6 19.Ng7 Ke7 20.Qa7 Kf6–+) 15...Kc8 (15...Qe6 16.Qe6 Bb4 17.Ke2 cb5+–) 16.Qe8 (16.Qe8 Qd8 17.Qd8) 1–0. Janek – Gustave, internet, 2016.

4.b5 d5 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 g6).

4.b5 d6 5.Bc4 Ne7 6.d4 d5 (6...Nd7 7.Nc3+=) 7.de5+– dc4 8.ef6 Qd1 9.Kd1 Kf7 1–0. DEFFM – GuestQKVC, freechess.org, 2018.

4.b5 Qe7 5.Nc3 a6 6.a4 ab5? (better 6...Qe6!?+–) 7.ab5+– Ra1 8.Qa1 (8.Ba1?! Qe6+–) 8...Bg7?? (8...Qb4 9.Nd5 Qe4+–) 9.Qa8 Qb4 (9...Qd8 10.Qb8 Ne7+–) 10.Ba3 Qg4 11.Qb8 Ne7 (11...d6 12.b6 Ne7 13.bc7 Kf7+–) 12.Be7 Ke7 13.Qc7 Qb4 (13...e4 14.Nd5 Kf7+–) 14.Nd5 Kf7 1–0. DEFFM – GuestCSLH, freechess.org, 2019.

4.b5 Ne7 5.d4 g5?? (better is 5...Bg7=) 6.de5+– f5 7.Qh5 Ng6 8.Nf3 (8.Bd3 Qe7+–) 8...g4 (8...Bb4 9.Nbd2 Bd2 10.Kd2+–) 9.Ng5 Qe7 10.Nc3 Qb4? 11.0–0–0 d6 12.Nd5 Qa5 13.Nh7 (13.Nh7 Rg8 14.Ndf6 Kd8 15.Ng8 Qa2 16.Qg6+–) 1–0. gioco1b4 – Ruach, World Chess Microsoft, 2012.

4.b5 Bg7 5.d4 a6 6.Nc3=.

4.b5 Bg7 5.d4 d6 6.de5 fe5 7.Bc4 Nf6 (7...Qg5 8.Qd5 Qe7 9.Nc3=) 8.Ne2 (8.Nc3 a6=) 8...Qe7 (8...a6 9.ba6 Na6 10.0–0=) 9.Nbc3 Be6 10.Nd5 Nd5 11.Bd5 c6 (11...Bd5 12.Qd5 c6 13.Qb3=) 12.bc6 (12.Be6 Qe6 (12...cb5?? 13.Qd5+–) 13.e4 0–0=) 12...bc6 13.Be6 (13.Bb3 Nd7=) 13...Qe6 14.Ba3 c5 (14...d5 15.Rb1=) 15.Rb1 0–0 (15...Nc6 16.c4=) 16.0–0 (16.e4 Nd7= (16...Qa2? 17.Rb3 c4 18.Nc3 cb3 19.Na2 ba2 20.0–0+–)) 16...Nd7 (16...Nc6 17.e4=+) 17.Nc3 (17.e4 A) 17...Qa2? A1) 18.Qd6?! Nb6 (18...Qc2? 19.Qd7 Rad8 20.Qe6 Kh8 21.Qa6+–) 19.Bc5 Rfd8=; A2) 18.Rb3 Rab8 19.Qd5 Kh8 20.Rb8 Qa3 21.Rb7+–; B) 17...Nf6 18.Qd3 Rab8=) 17...Nf6 (17...e4!? 18.Nb5 Rad8=) 18.e4= Nh5 (18...Qc4 19.Qd3 Qd3 20.cd3=) 19.Nd5 (19.Qd5 Qd5 20.Nd5 Nf6 21.Nf6 Bf6=) 19...Rac8 (19...Rab8 20.Rb8 Rb8 21.c4=) 20.Rb7+= Rf7 21.Rf7 Qf7 (21...Kf7 22.Qb1 Rf8 23.Qb7 Kg8 24.Qc6=) 22.Qd3 Rb8 (22...Rf8 23.Bc1+=) 23.Qa6 Qd7 (23...Qf8 24.Rd1+– (24.Qa7? Ra8 25.Qb7 Ra3–+)) 24.Rd1+– Nf6 (24...Rf8!?+–) 25.Nf6+– Bf6 26.Bc5! (26.Qd6?? Qd6 27.Rf1 Qd4–+) 26...Be7 (26...dc5 27.Qd6 Double attack (27.Rd7 Pinning; 27.Rd7 Deflection; 27.Qd6 Decoy)) 27.Ba7 (27.Bd6 Bd6 28.Qd3 Qe7–/+; worse 27.Qa7 Qa7 28.Ba7 Ra8+–) 27...Ra8 (27...Qb5 28.Qa3 Rc8 29.Be3+–) 28.Qc4 Kg7 29.Be3 Ra4 (29...Qa4 30.Qe6 Re8 31.h3+–) 30.Qd5 Qc7 31.Rb1 (better 31.c3+–) 31...Rc4?? (better 31...Qc2 32.Rb7 Ra7+–) 32.Rb7 Qd8 (32...Rc2 33.Rc7 Rc7+–) 33.Qc4 Kf8 34.Bh6 Ke8 35.Qg8 (35.Qg8 Bf8 36.Qf8) 1–0. DEFFM – GuestKKKP, freechess.org, 2018.

4.b5 Bg7 5.d4 d6 6.Nf3 e4 7.Nfd2 d5 (7...f5 8.c4=) 8.c4+= Be6 (8...c6 9.Nc3 Be6 10.bc6 bc6 11.Qa4+–) 9.cd5+– Bd5 10.Nc3 f5 11.Nd5 Qd5 12.Bc4 Qd6 13.Qb3 Nf6?? (better 13...Ne7+–) 14.Ba3+– Qd7 15.Be6 Qe7 (15...Kd8 16.Bd7 Nbd7 17.Rc1+–) 16.Be7 Ke7 17.Rc1 c6 18.bc6 b6 (18...bc6 19.0–0 Rd8+–) 19.c7 Nbd7 20.Rc6 Rhc8 21.Bd7 Kd7 22.Qe6 1–0. DEFFM – GuestRWPZ, freechess.org, 2018.

4.c4 Bb4 5.Ne2 d5 (5...d6 6.Nbc3–/+) 6.cd5 (6.Qb3 Na6 7.Ng3 d4=+) 6...Qd5 7.Nbc3 Bc3 (7...Qa5 8.a3 Bd6 9.d4=+) 8.Nc3 Qd8 9.Bc4 Ne7 10.0–0 c6 (10...Nbc6 11.Ne4 Rf8 12.d4=) 11.Ne2 (11.Ne4 Rf8+=) 11...b5 12.Bb3 c5 13.d3 (13.f4 Nec6+=) 13...a5 14.Nc3 Ba6 (better 14...a4 15.Bc2 Qd7=+) 15.Qf3 Ra7 (15...Nd7 16.Be6+–) 16.Qf6 Rf8 17.Qe5 Nd7 (17...Nbc6 18.Qg3+–) 18.Qg3 Nf5 19.Qh3 h6 (19...a4 20.Be6 Qe7 21.Bf5 Rf5 22.Rad1+–) 20.e4 Nh4? (20...Nd4 21.Nd5 (21.Qh6?! Qf6+–) 21...Ne2 22.Kh1+–) 21.f4 (better 21.Nd5 Rf7 22.Qe6 Kf8 23.Qd6 Ke8 24.Bc1+–) 21...g5?? (21...c4 22.Nd5 Kf7 23.f5+–) 22.f5 (better 22.Nd5 Qb8 23.fg5+–) 22...b4 (better 22...a4 23.Bd1 Nf6+–) 23.Nd5 Nb6 24.Nb6 (24.f6 Bc8 25.Qg3 Ng6+–) 24...Qb6 25.Kh1 Kd8 (25...Rd7 26.Rad1 Bb5+–) 26.g3 (better 26.Rad1 Bb5 27.g3+–) 26...Nf5?? (26...Bd3 27.Bd5 c4 28.gh4 Bf1 29.Rf1 c3+–) 27.Rf5+– (27.ef5?! Bb7 28.Kg1 c4 29.d4 cb3 30.ab3 Re8+=) 27...Rf5 28.Qf5 (28.ef5 c4 29.d4 cb3 30.ab3 Re7–/+) 28...Rd7 (28...Re7+–) 29.Qf8 Kc7 30.Be5 Kb7 31.d4! c4 (31...cd4 32.Qb8 Mate attack) 32.Qb8 Kc6 33.Ba4 Bb5 (33...Qb5 34.Bb5 Bb5 35.d5 Kc5 36.Qc8 Rc7 37.Qc7 Bc6 38.Qc6) 34.d5 Kc5 35.Bd4! Kd4 36.Qb6 Ke4 37.Bb5 (37.Re1 Kd5 38.Qb5 Kd4 39.Qe5 Kd3 40.Rd1) 37...Re7 38.Re1 Kf5 (38...Kd3 39.Re7 Kc2 40.Re2 Kd1 41.Bc4 b3 42.Qg1) 39.Re7 (39.Bd7 Rd7 40.Qe6) 39...c3 (39...g4 40.Bd7 Kg5 41.Re5) 40.Qe6 1–0. dbinc007 – sokkman, gameknot.com, 2017.

4.c4 Bg7 5.b5 a6 6.Nf3 Ne7 7.Be2 ab5 8.cb5 b6 (better is 8...d5!?=) 9.d4+/– e4 10.Nfd2 d5 11.Qb3 Bd7 (11...f5!?+/–) 12.Nc3+– 0–0 13.Nd5 Kh8 (better is 13...Be6 14.Ne7 Qe7+–) 14.Nf4 (14.Ne4?! Be6 15.Nec3 Bd5 16.Nd5 Qd5= (worse is 16...Nd5 17.Bf3 c6 18.bc6+/–)) 14...f5 15.h4 Qc8 (15...Bf6+–) 16.h5 g5 (16...Qe8 17.hg6 Ng6 18.Bh5 Nf4 19.Be8 (19.ef4?! Qe6+–) 19...Nd3 20.Ke2 Be8 21.f3+–) 17.Ng6! Ng6 (17...hg6 18.hg6 Passed pawn) 18.hg6 h6 19.Qd5 Ra5 (19...Ra4 20.Rh6!! Bh6 21.Qe5 Rf6 22.Qf6 Bg7 23.Qg5+–) 20.Rh6!! Bh6 21.Qe5 Bg7 (21...Rf6 22.Qf6 Bg7 23.Qg5 Bb5 24.Ne4 Kg8 25.Nf6 Kf8+–) 22.Qh2 Bh6 23.Qh6 1–0. marektheim – peir, internet, 2015.

4.Bc4 Ne7 5.h4 d5=+ 6.Bb3 Nf5 7.a3 Nc6 (7...a5 8.d4 ed4 9.g4=) 8.h5 g5 (8...Bg7 9.Nc3 Nce7 10.Nge2=) 9.d3 (9.Nc3 Nce7=) 9...a5 (9...d4 10.e4 Nd6 11.h6=) 10.b5= Nce7 11.Nd2 b6 (11...a4 12.Ba2=) 12.c4+= d4 13.e4 (13.Ne4 Ng8 14.ed4 Nd4 15.Bd4 Qd4=) 13...Nd6= 14.g3 (14.Qf3 Ng8=) 14...h6 15.Rc1 Nb7 16.Ba2 Nc5 17.a4?? (17.Nb3 Na4 18.Ba1 Qd6=+) 17...Be6?? (better 17...Nd3 18.Kf1 Nc1 (worse 18...Nb2 19.Qc2–+) 19.Qc1 Qd6–+) 18.Qc2=+ Qd7 19.Ne2 Nc8 20.f3 Nd6 21.g4 Nf7 22.Ng3 Bd6 23.Nf5 Bf5 24.ef5 0–0–0 25.Ne4 Ne4 26.de4 (26.fe4 Bb4 27.Kf1 Bc5=) 26...Bc5 (26...Bb4 27.Kf1 Qe7 28.c5 Bc5 29.Kg2=) 27.Qd3= Qe7 (27...Nd6 28.0–0=+) 28.Bb3 (28.0–0 Kb8=) 28...Bb4 29.Kf2 Qc5 30.Ra1 Nd6 31.Rhc1 (31.Rhd1 Nb7=+) 31...Nb7–/+ 32.Rc2 (32.Bc2 Qd6–/+) 32...Qe7 33.Bc1?? (better 33.Rcc1–/+) 33...Nc5–+ 34.Qe2 (34.Qd1 Nb3 35.Rb1–+) 34...Nb3 35.Raa2 (35.Rca2 d3 36.Qd1 Qc5 37.Kg3 Qc4–+) 35...d3 36.Qe3 (36.Qf1 dc2 37.Rc2 Bc5 38.Kg3 Rd7–+) 36...dc2 (better 36...Bc5 37.Kg2 Be3 38.Be3 dc2 39.Rc2–+) 37.Rc2 (37.Qb3 Qc5 38.Kg2–+) 37…Bc5 (37...Bc5 38.Kg2 Be3 39.Be3 Qa3–+) 0–1. e4_e5_f4 (1750) – ivaynanay (1715), lichess.org, 2021.

3.e3 e6

4.a3 d5 5.h4 (5.c4 a5 6.b5 c6+=) 5...Nh6 (5...Bg7 6.c4=) 6.h5 g5 (6...e5 7.d4 Bg7 8.de5 fe5 9.c4+=) 7.c4 Bg7 (7...a5 8.b5+=) 8.Qc2 Nc6 (8...Nf7 9.Bd3 h6 10.Nf3+=) 9.cd5 (9.Bd3 dc4 10.Bh7 Ne7+=) 9...ed5 10.Nc3 (10.Bb5 Bd7+=) 10...Be6 (10...a6 11.b5 Bf5 12.Qa4 ab5 13.Qb5=) 11.Nf3 1–0. michaelbuss (2850) – Papa Lazarou (1720), ChessWorld.net, 2016.

4.b5 c6 5.a4 cb5 (5...d5 6.Nf3+–) 6.ab5 Qb6 (6...d5!?+–) 7.c4 Be7 8.d4 (8.Nc3 Nh6+–) 8...Nh6 (8...d6 9.Bd3+–) 9.c5 Qc7 (9...Qd8 10.Nc3 0–0 11.Nf3+–) 10.b6!+– Qd8 (10...ab6 11.Ra8 Pinning (11.Ra8 Deflection)) 11.Bc4 (11.Nc3 Nc6+–) 11...Nc6 (11...d5 12.Bb5 Kf7 13.Ra7 Ra7 14.ba7 Qa5 15.Nc3 Qa7 16.Nf3+–) 12.Nf3 (12.Nc3 0–0+–) 12...a6 (12...d6 13.Qb3 dc5 14.ba7+–) 13.d5 (better 13.0–0 d6 14.Nc3+–) 13...Nb4? (better 13...ed5 14.Qd5 Nb4+–) 14.d6+– Bf8 15.Nd4 Rg8 (15...Bg7 16.Qb3 Nc6 17.Nc6 bc6 18.Nd2+–) 16.Qa4 (16.Qb3 a5+–) 16...Nc6 17.Nc6 dc6 18.0–0 (18.Nc3 Bg7+–) 18...Bd7 (18...Bg7 19.Nc3+–) 19.Nd2 (19.Nc3 Bg7 20.Ne2 Kf7+–) 19...Ng4 (19...Bg7 20.Nf3+–) 20.Qb3 Ne5 (20...Kf7 21.h3 Nh6+–) 21.Be6 Qc8 (21...Rg7 22.Ne4 Bd6 23.cd6 Kf8+–) 22.Bg8 (22.Bg8 Bg4 23.Be5+–) 1–0. GuestTLWG – GuestCDRT, freechess.org, 2019.

4.c4 Bb4!? 5.Nf3 e5=+.

4.c4 c6 5.Qb3 Bg7 (5...Na6 6.a3+=) 6.a4 Ne7 7.b5 (7.d4 d6+=) 7...0–0 8.Be2 d5 9.Nf3 a6 10.0–0 dc4 (10...ab5 11.ab5 Ra1 12.Ba1 cb5 13.Qb5+=) 11.Bc4 Nd5 (11...Qd7 12.Nc3 Rd8 13.d3+–) 12.Nc3+– ab5 13.ab5 Ra1 14.Ra1 cb5 15.Nb5 Nc6 16.Nbd4 (16.e4 Nf4 17.g3 Nh3 18.Kg2 Ng5 19.Ng5 fg5 20.Be6 Be6 21.Qe6 Kh8 22.Bg7 Kg7+–) 16...Nd4 (16...Na5!? 17.Qd3 Nc4 18.Qc4 Qb6+=) 17.Bd4 (17.ed4?! Qd7=) 17...e5?? (better 17...Qd6+–) 18.Bb2 (better 18.Bd5 Kh8 19.Bc5 Re8+–) 18...Be6 19.Ra5?? (19.e4!? b5 20.Bd5 Bd5 21.ed5 Qd7+–) 19...Kh8?? (better 19...Qa5 20.e4 Rd8–+) 20.Ra1 (better 20.Rd5!? Bd5 21.Bd5 Qe7+–) 20...e4?? (20...Kg8 21.e4 b5 22.Bd5 Bd5 23.ed5 Qd7+–) 21.Ne1 (21.Nd4!? Bg8+–) 21...f5 (21...b5 22.Qb5 Nc7+–) 22.h3 (better 22.Qb7!? Qc7 23.Qc7 Nc7 24.Bg7 Kg7 25.Ra7+–) 22...Bb2= 23.Qb2 Kg8? (23...Qf6 24.Qf6 Rf6 25.Ra5=) 24.d3 (24.Qb7!? Bf7 25.Ra7+–) 24...ed3 (24...Qf6!? 25.Qb1 f4 26.de4 fe3+=) 25.Nd3+– (worse 25.Bd3 Qf6 26.Qf6 Nf6=) 25...Re8 (better 25...Qf6!? 26.Qf6 Rf6+–) 26.Nc5+– Qf6?? (better 26...Bf7 27.Qb7 Qd6+–) 27.Qf6 Nf6 28.Nb7 (better 28.Be6 Kf8 29.Ra7+–) 28...Bc4=+ 29.Nd6 Re4 (29...Bd5 30.Ne8 Ne8 31.Ra7=+) 30.Ne4 (30.f3 Re3 31.Nc4 Rc3=) 30...Ne4 31.Ra4 Bb3 32.Rb4 (32.Ra7 h6=) 32...Bf7 33.f3 Nc3 (33...Nc5 34.g4 fg4 35.Rb5=+) 34.Kf2= h5 35.Ke1 (35.e4 f4=) 35...Nd5=+ 36.Rb8 Kg7 37.Kd2 f4 38.ef4 (38.e4!? Ne3 39.g4–/+) 38...Nf4–/+ 39.g3 Nh3 40.Ke2 Ng5 41.f4 Ne6 42.Rb6 Nd4 43.Ke3 Nf5 44.Kf3 Bd5 45.Kf2 h4 46.gh4 Nh4 0–1. AhmedSultanov – kbbx, lichess.org, 2019.

3.e3 Kf7

4.c4 Kg7 5.d4=.

4.c4 Bg7 5.a4 c5 (5...a5 6.b5=) 6.b5 (6.bc5 Qa5+–) 6...a6 7.Nc3 ab5 (7...d6 8.d4 cd4 9.ed4 ab5 10.ab5 Ra1 11.Ba1+=) 8.ab5 d6?? (better 8...Ra1 9.Qa1 d6+=) 9.Ra8+– Nd7 10.Nf3 e5 11.Be2 Nb6 12.Ra1 (12.Ra7 f5+–) 12...Ne7 13.d4 cd4 14.ed4 ed4 (14...Be6 15.de5 de5 16.Ne4+–) 15.Nd4 Re8 16.0–0 Kg8 17.Qb3 Kh8 18.Rfe1 Nf5 19.Nd5 Nd5 20.cd5 Qb6 (20...Nd4 21.Bd4 Bf5 22.Bc4+–) 21.Rad1 (21.Bd3 Re1 22.Re1 Qd8+–) 21...Nh4 (21...Nd4 22.Bd4 Qd8 23.Bd3+–) 22.Ne6 (22.Bg4 Rd8 23.Bc8 Rc8+–) 22...Be6 23.de6 Nf5 24.Bg4 h5 (24...Ne7 25.Bf3+–) 25.Bf5 gf5 26.Qd3 Qc5 (26...Kg8 27.Qf5 Qd8 28.Qg6+–) 27.Qd6 (better 27.Qf3 Re7 28.Qh5 Kg8+–) 27...Qb5 (27...Qd6 28.Rd6 Kh7+–) 28.Qd7 Rg8 29.Qb5 (29.Qb5 Kh7 30.Qf5 Kh8 31.Qh5 Bh6 32.Qh6) 1–0. BeepBeepImAJeep (2615) – blindchess32 (2145), lichess.org, 2016.

4.Qf3+=.

4.Nf3 e5!?=.

4.Nf3 Ke6?? 5.d4?? (better is 5.Ng5 fg5 6.Qg4 Kf7 7.Bh8+–) 5...Kd5?? (better is 5...Kf7+/–) 6.c4 (better is 6.Ne5 fe5 7.de5 Ke6 8.Bc4 d5 9.ed6 Kd7 10.dc7 Kc7 11.Be5 Qd6 12.Qd4+–) 6...Ke6 7.c5 (better is 7.Ng5! fg5 8.d5 Kf7 9.Bh8+–) 7...Kf7 8.Nbd2 a5 9.a3 ab4 10.ab4 Ra1 11.Qa1 Nc6 (11...d5 12.Bd3+/–) 12.b5+– Nb4 13.Qa3?? (better is 13.Qa4 Nd5 14.Bc4+/–) 13…Nc2–+ (13...Nc2 14.Kd1 Na3 15.Ba3 d6–+) 0–1. Fournier,Frederic (1840) – Adeimi,Michel (1985), Match Active, 2007.

4.f4 Bg7 5.Nc3 e6 6.Nf3 Ne7 7.g4 (7.Be2 Rf8+=) 7...a6 (7...d5 8.g5=) 8.a4 (8.h4 Nbc6+=) 8...c6 (8...d5 9.g5=) 9.a5 b6 10.ab6 Qb6 11.Ne4 d5 (11...Qb4!? 12.Bd4 f5+–) 12.Nd6+– Kf8 13.g5 Qc7?? (better 13...fg5 14.Bg7 Kg7+–) 14.gf6+– (14.Nc8?! Ng8+–) 14...Bf6 15.Bf6 Qd6 16.Bh8 (16.Bh8 Qb4 17.Rb1+–) 1–0. Pereira – Valoise, internet, 2020.

3.e3 Bg7

4.a3 a5 5.b5 b6 (5...e5 6.d4+=) 6.Nf3 Bb7 7.Be2 Bf3 (7...e5 8.d4+=) 8.Bf3+– (8.gf3?! e6=) 8...d5 (8...c6 9.0–0+–) 9.d4 (9.c4 e6+–) 9...e6+– 10.Nd2 (10.c4 Ne7+–) 10...Ne7 11.c4 Nf5 (11...c6!?+–) 12.cd5 ed5 13.a4 (13.Nb1+–) 13...0–0? (13...Nh4 14.0–0+–) 14.0–0 (better 14.Qb3!? Ne7 15.Ba3+–) 14...Nh4+– 15.Be2 f5? (15...Re8 16.Rc1 Qd6 17.Rc3+–) 16.Nf3 (better 16.g3!?+–) 16...Nf3 17.Bf3 c6 (17...Qd7 18.Rc1 Rd8 19.Qb3+–) 18.bc6 (18.Qb3 Kh8+–) 18...Nc6 19.Qb3 Qg5?? Black intends f4 (better 19...Ne7+–) 20.Qd5 (20.Bd5 Kh8 21.Bc6 Rab8+–) 20...Kh8 21.Qc6 f4 22.ef4 (better 22.Ba3 Rfc8 23.Qd5 Qd5 24.Bd5+–) 22...Rf4 (22...Qf4 23.Rac1+– (23.Qb6?! Rab8 24.Bb7 Rf7+–)) 23.Bc1 (better 23.Qa8 Rf8 24.Qd5 Rf5+–) 23...Bd4 (23...Raf8 24.g3 Bd4+–) 24.Bf4 (better 24.Qa8 Kg7 25.Qb7 Rf7 26.Qf7 Kf7 27.Bg5 Ba1 28.Ra1+–) 24...Qc5 25.Qc5 (25.Qa8 Kg7 26.Bd5 Qd5 27.Qd5 Bf2 28.Kf2 g5 29.Be5 Kg6 30.g4 h5 31.Qg8 Kh6 32.Qg7) 25...Bc5 26.Ba8 Kg7 27.Be5 Kh6 28.Bf3 Kg5 29.Be4 h5 30.g3 Kg4 31.Kg2 (31.h4 Kh3 32.Bg6 Kg4 33.Kg2 Bf2 34.Rf2 b5 35.Bf5) 31...Be7 Black plans h4 32.h3 (32.Bf4 h4 33.h3 Kh5 34.g4) 32...Kg5 33.f4 (33.Bg7 h4 34.f4 Kh5 35.g4) 33...Kh6+– 34.Rad1 h4 (34...Bb4 35.Rd8 Bf8 36.Rf8 b5 37.Rh8) 35.g4 (35.Rd7 Bf8 36.Bf6 Bg7 37.Bg7 Kh7 38.Bf6 Kh6 39.Bg5 Kh5 40.g4) 35...Bc5 (35...b5 36.g5 Kh7 37.f5 Kg8 38.fg6 Bf6 39.gf6 ba4 40.Rd8) 36.Rd7 (36.Rd8 Bf8 37.Rf8 b5 38.Rh8) 36...Bb4 37.g5 Kh5 38.Bf3 1–0. Fournier,Frederic (1920) – speedygnzlz, Active, 2009.

4.a3 d6 5.Nf3 Be6 (5...e5 6.d4+=) 6.d4+= Qd7 7.c4 c6 8.Nc3 Qc7 9.Bd3 Nd7 10.0–0 0–0–0 11.a4 h5 (11...Bg4 12.b5+–) 12.b5 c5 13.d5 (13.Nd5 Bd5 14.cd5 Rh6+–) 13...Bf7 (13...Bg4!?+–) 14.a5+– e6 (14...Qb8 15.Qc2 g5 16.Ne2+–) 15.Qa4 (better 15.b6 ab6 16.Nb5+–) 15...g5?? (better 15...Ne5 16.Ne5 de5+–) 16.b6! Qb8 (16...ab6 17.Nb5 Combination) 17.ba7 (17.Nb5 ab6 18.Ng5 fg5 19.Bg7 Nh6 20.ab6 Nb6+–) 17...Qa7 18.a6 (18.Nb5!? Qa6 19.Ng5 Nh6+–) 18...Qa6 (18...Nb6 19.Nb5 Na4 20.Na7 Kb8 21.Ra4+–) 19.Qa6 (better 19.Qb3 Qb6 20.Ra8 Kc7 21.Nb5 Qb5 22.cb5 Ra8 23.de6+–) 19...ba6+– 20.Ra6 Nb8 21.Ra8 Rd7 22.Nb5 Bf8? (22...Ne7 23.de6 Be6+–) 23.Rfa1 (23.Ng5 fg5 24.Bh8 Rb7+–) 23...Rb7 (23...g4 24.Ng5!! fg5 25.Bh8+–) 24.Bc3 (better 24.Ng5 fg5 25.Bh8+–) 24...e5 (24...g4 25.Na7 Kd7 26.Ng5 fg5 27.Nc6 Nc6 28.dc6 Kc6 29.Rf8+–) 25.e4 (better 25.Bf5 Kd8 26.R1a7 Ra7 27.Rb8 Ke7 28.Na7 Bd5 29.cd5+–) 25...g4 (25...Nh6 26.Bc2 Kd7 27.R1a7 Ra7 28.Ra7 Kc8 29.Ba5+–) 26.Nd2 (26.Na7 Kd7 27.Nc6 Nc6 28.dc6 Kc6 29.Rf8 Be6+–) 26...Be8 (26...Nh6 27.Nb3+–) 27.R8a5 (27.Na7!? Kd8+–) 27...Bb5 28.Rb5 (28.cb5 h4+–) 28...Rb5 (28...Bh6!?+–) 29.cb5+– Be7? (better 29...Rh7+–) 30.Ra7 1–0. Fournier,Frederic – james68, Active, 2008.

4.a3 Kf7 5.Nf3 e5 6.d3 Ne7 7.c4 c6 (7...d5 8.cd5 Nd5 9.Nc3=) 8.Be2 d5 9.cd5 cd5 10.Nbd2 Be6 11.Rc1 Nd7 12.e4 d4 13.0–0 Rf8 14.Nc4 Nb6 (14...Kg8 15.a4=) 15.Nb6 (15.Nce5!? fe5 16.Ng5 Kf6 17.Nh7 Kf7 18.f4+–) 15...ab6 (15...Qb6 16.Nd2=) 16.Nd2 Qd6 (16...Bh6 17.Rc2=) 17.Nc4+= Bc4 18.Rc4 Rfc8 19.Qc2 Rc4 (19...b5 20.Rc8 Rc8 21.Qd1+=) 20.Qc4 (20.dc4 Kg8+–) 20...Kf8 (20...Qe6 21.Qc2+=) 21.Rc1 (21.f4 ef4 22.Qd4 Qd4 23.Bd4 f5 24.Bb6 g5+–) 21...Qd7 22.Qc7 Ke8 (22...Qc7 23.Rc7 Rc8 A) worse 24.Rb7 Rc2 25.Bd4 ed4–/+ (worse 25...Re2 26.Kf1 Ra2 27.Bb6+=); B) 24.Rc8 Nc8 25.f4+=) 23.Qd7 (23.Qb6!? Ra6 24.Qc7+–) 23...Kd7+= 24.Bg4 Kd6 25.h3 f5 26.ef5 gf5 27.Bf3 Rb8 28.a4 (28.Rc4 Nd5 29.Bd5 Kd5+=) 28...Bh6 (28...Ra8 29.Ra1=) 29.Rc2 (29.Rc4 b5 30.ab5 b6+=) 29...Bg5 (better 29...Ra8!?=+) 30.b5+= Bf6 31.g3 Nd5 32.Bd5 (32.Ba3 Ke6+=) 32...Kd5 33.Rc7 h6 34.Ba3 (34.Rh7 e4+=) 34...Bg5 (34...e4 35.Bc1=) 35.Kf1 (35.Rd7 Ke6 36.Rd6 Kf7+–) 35...Bd2 (better 35...Ke6!?+=) 36.Ke2 Ba5 37.Bc1 (37.Rd7 Ke6 38.Rd6 Kf7 39.Rh6 Rc8+–) 37...h5 38.Bd2 (38.f4 Rg8 39.Kf2 e4 40.Rd7 Ke6 41.Rd4 Rc8+–) 38...Bd2 39.Kd2 e4 (39...Ra8+=) 40.h4 (40.Rh7+–) 40...ed3?? (better 40...Ra8=) 41.Kd3+– Ke5 42.Re7 Kd6 43.Rh7 Kc5? (43...Ra8 44.Rh5 Ke6 45.Rh6 Kd5+–) 44.Rh5 Kb4 45.Rf5 Ka4 46.Kd4 Rd8 47.Rd5 Rf8 48.f4 Rf6 (48...Kb4 49.Ke4+–) 49.h5 Kb4 50.Ke4 White prepares f5 50...Re6 51.Re5 Rd6 (51...Rh6+–) 52.Rd5 (52.g4!? Rh6+–) 52...Re6 53.Re5 Rd6 54.f5 Rd2 55.g4 Re2 56.Kf4 Rg2 57.h6 Kc4 (57...Rf2 58.Kg5 Rd2 59.h7+–) 58.h7 (better 58.f6 Rh2 59.Kg5 Rf2+–) 58...Rh2 59.Re7 Kb5 (59...Kc5 60.g5 Kb5 61.Re5 Kc4 62.g6+–) 60.g5 (better 60.f6!? Kc6 61.f7 Rh7+–) 60...Rh4 61.Ke5 Rh1 62.g6 Kc6 63.Re8 (63.Re6 Kb5+–) 63...Re1 64.Kf6 Re8 65.g7 b5 66.g8Q Rg8 67.hg8Q b4 68.Qb3 Kb5 69.Ke7 Kc5 70.f6 b5 (70...Kb6 71.Qb4 Kc6 72.f7 b6 73.f8Q Kb7 74.Qd8 b5 75.Qb5 Ka7 76.Qbb6) 71.f7 Kb6 72.f8Q Ka5 (72...Kb7 73.Qd5 Ka6 74.Qd6 Ka5 75.Qa8) 73.Qa8 (73.Qb8 Ka6 74.Qa2) 73...Kb6 74.Qb8 (74.Qe6 Kc5 75.Qad5) 74...Kc5 (74...Kc6 75.Qe6 Kc5 76.Qbd6) 75.Qc8 (75.Qd6) 75...Kb6 (75...Kd4 76.Kd6 Ke4 77.Qg4) 76.Qb8 Kc5 77.Qc8 (77.Qd6) 77...Kb6= 78.Qb8 (78.Qbe6 Ka5 79.Qca6) ½–½. Fournier,Frederic – Guest459748, Partie amicale, 3m + 0s, 2007.

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 cb5 9.cb5 Qa5 10.Bc3 Qa2 11.Nf3 d6 12.d4+– Bf5 13.Bd3 Bd3 14.Qd3 f5 15.0–0 Nf6 16.Ng5 (16.Bd2 0–0+=) 16...h6 17.Nf3 Ne4 18.Nbd2 Nc3 (18...Qd5 19.Rc1+=) 19.Qc3+– Qe6 (19...Qd5 20.Qc7 Kf7 21.Nc4+–) 20.Rc1 (20.Qc7 0–0+–) 20...Qd7 (20...Kf7 21.Qc7 Qd5 22.Qc4 Qc4 23.Rc4+– (23.Nc4?! Nd7=)) 21.Nh4 (21.Qa5!? Qd8 22.Qa7 0–0 23.Qb7 Bf6+–) 21...Qb5 (21...Kf7!? 22.Qb3 e6+–) 22.Ng6+– Rg8 23.Qc8?? (better 23.Rb1 Qd7 24.Nf4+–) 23...Kf7=+ 24.Ne5 de5 25.Qf5 Bf6 26.Rc5?? (better 26.Nc4!? Kg7 27.de5=) 26...Qd7 (26...Qe2 27.Qh7 Rg7 28.Qc2 ed4 29.Qb3 Kg6 30.Nf1–+) 27.Qh5 (27.Re5 Qf5 28.Rf5 Rg5 29.Rg5 hg5–/+) 27...Rg6–+ 28.de5?? (better 28.d5–+) 28...Qd2 29.e6 (29.g3 Nd7 30.ef6 Nc5 31.Qc5 Rf6 32.Qc4 Kg7–+) 29...Kg7 (better 29...Ke6 30.g3 Rg5 31.Rg5 hg5 32.h4 gh4 33.gh4–+) 30.h3 (30.g3 Nc6–+) 30...Nc6 (better 30...Qe1 31.Kh2 Qf2–+) 31.Rd5 (31.g3 Nd4! 32.Kg2 Nc2 33.Rc2 Qc2–+) 31...Qc3 (better 31...Qe1 32.Kh2 Qf2–+) 32.f4 (32.Qe2–+) 32...Qe3 (32...Qe1 33.Kh2 Qg3 34.Kh1 Qg2) 33.Kh2 (33.Kf1 Bd4 34.Rd4 Nd4 35.Qe5 Qe5 36.fe5–+) 33...Qf4 (33...Qg3 34.Kh1 Qg2) 34.Kh1 Qf1 (34...Qf1 35.Kh2 Qg2) 0–1. AhmedSultanov (1710) – rape_whistle (1700), lichess.org, 2019.

4.b5 b6 5.Be2 Bb7 6.Bf3 d5 7.Ne2 (7.c4 a6 8.ba6 Na6 9.d4+=) 7...Nh6 (7...e5!?=) 8.Nf4+– Qd7 (8...e5 9.Ne6 Qd7 10.Ng7 Qg7 11.Nc3+=) 9.c4! e6 (9...dc4 10.Bb7 Pinning (10.Bb7 Deflection)) 10.Qb3 (better 10.Nc3 f5 11.cd5 ed5 12.Rc1+–) 10...0–0?? (10...dc4 11.Qc4 Bf3 12.Ne6 Bb7 13.Nc7 Ke7+=) 11.cd5+– e5 (11...Re8+–) 12.d6 Nf7 13.Bb7 cd6 (13...ef4 14.Ba8 c6 15.Nc3+–) 14.Ba8 ef4 15.0–0 Kh8 (15...f5 16.Nc3+–) 16.ef4 Qe7 (16...f5 17.Re1+–) 17.Nc3 Nd7 (17...Re8 18.Nd5 Qd8 19.Rfe1+–) 18.Rfe1 Qd8 19.Bc6 (19.Bd5 Nh6+–) 19...Nc5 20.Qc4 Qc8 (20...f5 21.d4 Nd7 22.Qa4+–) 21.Bd5 Nh6 22.d4 Nb7 (22...Nd7 23.Qc8 Rc8 24.Re7+–) 23.Qc8 Rc8 24.Bb7 Rc7 25.Re8 Ng8 26.Bd5 (26.Bd5 h6 27.Bg8+–) 1–0. DEFFM – GuestMSVX, freechess.org, 2018.

4.b5 b6 5.f4 Bb7 6.Nf3 d6 7.Nc3 f5 8.Be2 Nd7 9.Ng5 Nf8 10.Bc4 d5 11.Bb3 Nf6 12.0–0 h6 13.Nf3 Ne6 (13...a6 14.a4+–) 14.Ne5+– g5 (14...Rg8 15.Ng6 Nc5 16.d4 Nb3 17.ab3+–) 15.fg5 Ng5 (15...hg5 16.Rf5 Qd6 17.d4+–) 16.h4 Nge4?? (16...Ne6+–) 17.Ne4 (17.Rf5?! 0–0 18.Ne4 Ne4+–) 17...fe4 (17...de4 18.Rf5 Qc8 19.Bf7 Kd8+–) 18.Rf6! h5 (18...ef6 19.Qh5 Combination; 18...Bf6 19.Qh5 Mate attack) 19.Rg6 Bf6 (19...Be5 20.Be5 Kd7 21.Bh8 Qh8+–) 20.Rg8! (20.Rg8 Rg8 21.Qh5 Rg6 22.Qg6 Kf8 23.Qf7) 1–0. marekt – ashadrach, internet, 2012.

4.b5 c6 5.a4 cb5 6.ab5 b6 7.c4 Bb7 8.Nf3 Nh6 9.Be2 Nf7 10.0–0 0–0 11.d4 d5 (11...a6 12.Nc3+–) 12.Nc3 dc4 13.Bc4 Kh8 14.Bd5?? (better 14.Qb3 Nd6 15.Bd5+–) 14...Bd5–+ 15.Nd5 e5?? (better 15...Qd5 16.Ba3 Qb5 17.Be7 Re8–+) 16.Nb4 (16.de5 Ne5 17.Rc1 Nbd7+–) 16...ed4 (16...e4 17.Nd2 Nd6 18.f3+=) 17.Nd4+– Ne5? (better 17...Qd6+–) 18.Ne6+– Qd1 (18...Qe7 19.Nf8 Qf8 20.Qd5+–) 19.Rfd1 (19.Rad1?! Rc8 20.Be5 fe5+–) 19...Rc8 20.Nc7! Rc7 21.Rd8 Bf8 22.Rf8 Kg7 23.Be5 Rb7 (23...fe5 24.Na6 Rb7+–) 24.Rf6 Nd7 (24...Kh6 25.Rf8 a5+–) 25.Rb6 Ne5 26.Rb7 Kf6 27.Raa7 Rc8 (27...Ra7 28.Ra7 Ke6 29.Rh7+–) 28.h3 (better 28.f4 Kf5 29.fe5 Ke5 30.Rh7 Rc3+–) 28...Rc1 29.Kh2 h5 (29...Rc4 30.Ra6 Kf5 31.Nd5+–) 30.Ra6 (30.f4 Rc4 31.Rb6 Kf5+–) 30...Kf5 31.g4! hg4 32.hg4 Ng4 (32...Kg4 33.Kg2 Rc5 34.Nc6+–) 33.Kg2 Rb1 34.Nd3 Rb3 (34...Ne5 35.Ne5 Ke5 36.f4 Ke4 37.Re7 Kd5+–) 35.Rf7 Nf6 36.Rff6 (36.Rff6 Ke4 37.Nc5 Kd5 38.Nb3 Kc4 39.Rfc6 Kb5 40.Nd4 Kb4 41.Rab6 Ka4 42.Rb5 g5 43.Ra6) 1–0. AhmedSultanov (1780) – Whiplash775 (1855), lichess.org, 2019.

4.b5 c6 5.a4 d5 6.c4 e6 7.Nf3 Nd7 8.d4 e5 9.Be2 Qa5 (9...Ne7!?+=) 10.Bc3+– Qb6 11.a5 Qd8 12.Qb3 (12.cd5 cd5 13.de5 Ne5+–) 12...Ne7+= 13.c5 0–0 14.b6 ab6 15.ab6 Ra1 16.Ba1 Nf5 17.0–0 ed4 18.ed4 Ne7 (18...Re8 19.Qd1+=) 19.Nbd2 f5 20.Ng5 Nf6 21.Bf3 (21.Re1 Ne4 22.Nge4 fe4 23.Ne4 Nf5+=) 21...Bh6 (21...h6 22.Nh3=) 22.h4 Ne4 (22...f4!?=) 23.Nde4+= fe4 24.Be2 (better 24.Be4!? Nf5 25.Bf5 Rf5 26.Qe3+=) 24...Bg5 (24...Nf5 25.Bg4–/+) 25.hg5=+ Nf5 26.f4 ef3 27.Qf3 Qg5 28.g4 (better 28.Bb2!?=+) 28...Nd4?? (better 28...Re8 29.Qf2 Nh6–+) 29.Qf8 1–0. AhmedSultanov (1620) – ijasamzvezdas, lichess.org, 2019.

4.b5 e6 5.c4 c6 6.Nf3 c5 (6...Ne7!?=) 7.Be2 b6 8.0–0 Bb7 9.d4 d6 10.dc5 bc5 11.a4 Ne7 12.a5 0–0 13.a6 Bc8 14.Nbd2 Qc7 15.Ne4 d5 16.cd5 ed5 (better 16...Nd5 17.Rc1 Nd7+–) 17.Nf6?? (better 17.Nc5 Qd6 18.Ba3+–) 17...Bf6–+ (worse 17...Rf6 18.Bf6 Bf6 19.Rc1–/+) 18.Bf6 Rf6 19.Ng5 Bf5 20.e4 de4 21.Bc4 Kg7 22.h4?? (better 22.Re1 Qe5 23.f3–+) 22...h6 23.Ne6 (23.Nf7 Nd7 24.Qd2 Rf7 25.Bf7 Kf7 26.Qh6–+) 23...Be6 24.Be6 Re6 25.h5 g5 (25...Nd7 26.Re1–+) 26.Qg4 (26.Qb3 Qe5 27.Rad1–+) 26...Rf6 (better 26...Qe5–+) 27.Qe4 Qf4?? (better 27...Nbc6 28.bc6 Re8–+ (28...Rc6?! 29.Rfb1 Qd7 30.Rb7–+)) 28.Qa8= Nd7?? (better 28...Qc7=) 29.Qa7+– Qd4 (29...Rd6+–) 30.Qb7 (30.Rad1 Qe4 31.Rde1 Qd5 32.Re7 Rf7 33.Rf7 Kf7+–) 30...Ne5?? (better 30...Rf2 31.Rf2 Qa1 32.Kh2 Qe5 33.g3 Qd5+–) 31.Qe7+– Rf7 32.Qe6 (better 32.Qf7! Nf7 33.a7 c4+–) 32...Qf4 (32...Rf8+–) 33.a7 (33.a7 Rf6 34.Qe7 Rf7 35.Qc5+–) 1–0. stoker – windmill, Live Game Caissa's Web, 2004.

4.b5 e6 5.c4 Ne7 6.Nf3 0–0 7.Be2 c6 8.a4 a6 9.0–0 (9.Nc3 d5+–) 9...ab5+= 10.ab5 Ra1 11.Ba1 cb5 12.cb5 Qb6 (12...d5 13.Qb3+=) 13.d4 (13.Bd4 Qc7+–) 13...d5 14.Nbd2 (14.Qb3 Bd7+–) 14...Bd7 The isolani on b5 becomes a target 15.Qb3 Be8 (15...Rc8 16.g4+=) 16.Bb2 Nd7 17.Ba3 Rf7 18.Rc1 e5 (18...Qd8 19.Bd6+–) 19.de5+– fe5? (better 19...Ne5 20.Nd4 Bh6+–) 20.Ng5 Rf6 (20...Bf6 21.Nf7 Bf7+–) 21.Be7 Rf5 22.Qd5 Bf7 23.Rc8 Nf8 (23...Qd8 24.Qd7 Qf8 25.Bf8 h5 26.Bd6 Be8 27.Qf5 gf5 28.Bc4 Kh8 29.Re8 Bf8 30.Be5) 24.Nf7 Rf7 (24...Bh6 25.Nd6 Kh8 26.Bc4 Rf7 27.Qf7 Qd6 28.Qg8) 25.Rf8! Bf8 (25...Bf8 26.Bc4 Mate attack) 26.Bc4 (26.Bc4 Qe6 27.Qe6 Kg7 28.Qf7 Kh6 29.Qf8 Kh5 30.Be2) 1–0. DEFFM – albann, freechess.org, 2019.

4.b5 e6 5.d4 Ne7 6.Bd3 0–0 7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 cb5 12.cb5 Qa5 (12...b6 13.h4+=) 13.Nc3 Nd5 14.0–0 Nc3 15.Qd2 d5 16.Bc3 Qc7 17.Rc1 Qf7 (17...Qd8 18.Bb4 Re8 19.Qa2+–) 18.Ba5 (18.Bb4 Re8+–) 18...Nd7 (18...e5 19.Rc7 Qe8 20.de5 fe5 21.e4+–) 19.Rc7 Qe7? (better 19...Rd8!?+–) 20.Qc3+– Qd6? (20...Qe8+–) 21.Bb4 Qb6 (21...Nc5 22.Rc5 Qb8 23.Rc7+–) 22.Bf8 Bf8 23.Rc8 Qa7 (23...Kf7 24.Qc7 Ke7 25.Qb6 Nb6 26.Rc7 Nd7+–) 24.Qc7 Qa1 25.Bf1 (25.Bf1 Qf1 26.Kf1 Kg7 27.Qd7 Kh6 28.Rc7 Kh5 29.Qh7 Bh6 30.Rg7 g5 31.Qg6 Kg4 32.h3) 1–0. onur604 (2320) – Tito1987 (2105), lichess.org, 2020.

4.b5 h5 5.Nf3 Rh7 (5...e5 6.e4+=) 6.c4 d5 (6...d6 7.Qc2 Bf5 8.Bd3+–) 7.Nc3 (7.cd5 e6 8.de6 Be6+–) 7...e6 8.Qb3 c6 9.a4 (9.d4 Ne7+–) 9...Qd7 (9...Ne7 10.Be2+=) 10.Be2 g5 (10...Ne7 11.0–0+–) 11.Qc2 (11.bc6 bc6 12.cd5 cd5+–) 11...Rh6 12.0–0 h4 13.h3 (better 13.cd5 cd5 14.Rac1+–) 13...Qe7? (13...g4!? 14.hg4 h3+–) 14.Nh2 (14.cd5!? ed5 15.bc6 bc6 16.Nd5 Qd7+–) 14...f5 15.Nf3 (better 15.cd5 Bc3 16.Bc3 ed5 17.Bd3+–) 15...g4= 16.hg4 h3 (16...fg4 17.Nh2 Nf6 18.Ng4 Ng4 19.Bg4 dc4 20.Ne4+=) 17.gf5 (17.g5 hg2 18.Kg2 Rg6+=) 17...hg2+= 18.Kg2 ef5 19.Rh1 (19.cd5? Rg6 20.Kh1 Be5–+) 19...Rg6 (19...dc4!? 20.Rh6 Nh6 21.Bc4 Be6 22.Be6 Qe6+–) 20.Kf1+– Nf6 (20...dc4!? 21.Bc4 Be6 22.Be6 Qe6+–) 21.cd5+– Ne4 (21...c5 22.Bd3 Kd8 23.Bf5+–) 22.dc6 Nc3 (22...bc6 23.Ke1 Be6+–) 23.Bc3 bc6 24.Bg7 (24.Ne5 Be5 25.Bh5 Qh7 26.Be5 Kd8+–) 24...Qg7 25.Qc3 Kf7 (25...Rf6 26.Qe5 Kf8 27.Rc1+–) 26.Bc4 (better 26.Ne5!? Ke7 27.Ng6 Qg6+–) 26...Be6 27.Ne5 Ke7 (27...Ke8 28.Be6 Re6 29.Nc6 Qc3 30.dc3 Rf6+–) 28.Ng6 Qg6 29.Be6 Ke6 30.bc6 Na6 (30...Qf6 31.Qf6 Kf6+–) 31.Qc4 Kd6 32.Qa6 f4 33.Qc4 (33.c7 Ke5 34.Qg6 Rh8 35.Rh8 fe3 36.Rh5 Kd4 37.Qd6 Kc4 38.c8Q Kb3 39.Rb5) 33...Rg8 (33...Qf6 34.Rc1 fe3 35.Qc5 Ke6 36.Qe3 Kf7+–) 34.Qf4 Kc6 35.Rh6 Qh6 36.Qh6 Kd5 37.Qh5 (37.Rc1 Rd8 38.Rc6 Rd6 39.Qd6 Ke4 40.d3 Kf5 41.Qf4) 37...Ke4 38.Qh7 (38.Ke2 Rg5 39.Qg5 a5 40.d3) 38...Kd5 39.Qg8 Ke5 (39...Kd6 40.Qg6 Kd7 41.Qf7 Kd6 42.d4 a5 43.Rb1 Kc6 44.Qb7 Kd6 45.Rb6) 40.Qg6 a5 (40...Kd5 41.Rc1 a6 42.Qc6 Ke5 43.Rc5) 41.Qa6 (41.Rb1 Kd5 42.Rb5 Kc4 43.Qe4) 41...Ke4 (41...Kf5 42.f4 Kg4 43.Qg6 Kh3 44.Kf2 Kh4 45.Rh1) 42.Qa5 (42.Qb5 Kf3 43.Qf5) 42...Kd3 43.Rb1 (43.f3 Kc4 44.Qb5) 43...Kc2 44.Qb4 (44.Qf5 Kd2 45.Rb2 Kc3 46.Qc2) 44...Kd3 45.Rb3 Kc2 46.Qc3 Kd1 47.Rb1 1–0. AhmedSultanov (1635) – DmitriyT (1650), lichess.org, 2019.

4.b5 Nh6 5.c4 d6 6.h3 (6.d4 e5=) 6...c6 (6...e5 7.Nc3=) 7.a4 (7.Nf3 0–0+=) 7...cb5 (7...0–0 8.d4=) 8.ab5+= 0–0 9.Nf3 a6 10.Be2 Nd7 11.Nd4 Nc5 12.Nc3 Bd7 (12...e5 13.Nc2=) 13.0–0 ab5 (13...e5 14.Nf3+=) 14.Ncb5 (14.Ra8 Qa8 15.Ndb5 Qe8+–) 14...Bb5 (14...Ra1 15.Qa1 e5 16.Nc2+=) 15.cb5 (15.Ra8 Qa8 16.Nb5 Qa2+–) 15...Ra1+= 16.Qa1 f5?? (16...Nf7 17.Nf3+=) 17.Bc4 (better 17.Nc6 Qa8 18.Ne7 (18.Bg7?! Qa1 19.Ba1 bc6+–) 18...Kf7 19.Bc4 Ke7 20.Bg7 Qa1 21.Ra1+– (21.Ba1?! d5 22.Bd5 Rd8+–)) 17...Kh8?? (17...d5!? 18.Qa2 dc4 19.Qc4 Nf7 20.Qc5 Qd7+–) 18.Ne6 (better 18.Nc6 e5 19.Nd8 Rd8 20.d4+–) 18...Ne6 19.Be6 Bb2 (19...Bf6 20.Rc1 Kg7 21.Bf6 ef6+–) 20.Qb2+– Rf6 21.Bc4?? (better 21.g4 fg4 22.hg4 Ng4 23.Bg4+–) 21...d5+= 22.Bb3 Kg8 23.Qa2 (23.Ra1 Kg7+–) 23...e6+= 24.Rc1 Nf7 25.Qa7 Nd6 26.b6 h5 (26...Rf8 27.g3=) 27.Rc7 Nb5?? (better 27...f4+=) 28.Qb7+– Nc7 (28...Nd6 29.Rg7 Kf8+–) 29.bc7 (29.Qc7?! Qc7 30.bc7 Rf8=) 29...Qe8 30.c8Q Qc8 31.Qc8 Kg7 (31...Kf7 32.Qd7 Kf8 33.Qd8 Kg7 34.Qe7 Rf7 35.Qe6+–) 32.Ba4 (better 32.Qe8+–) 32...Kh6 (32...d4+–) 33.Qh8 Kg5 34.f4 Kh4 35.Qf6 Kg3 (35...g5 36.Qg5) 36.Qg5 1–0. AhmedSultanov – BrunoSahista, lichess.org, 2019.

4.b5 Nh6 5.Nf3 0–0 6.Be2 d5 7.c4 c6 8.a4 (8.d4 Be6+=) 8...e5= 9.cd5 cd5 10.d4 e4 11.Nfd2 Be6 12.0–0 f5 13.Qb3 g5 Black prepares the advance f4 14.Nc3 f4 (better 14...Rf6!?+–) 15.Nde4 Nf5 16.Nc5 Bf7 17.Bg4 Nh6 (17...b6 18.Bf5 bc5+–) 18.Be6 (18.Be6 f3 19.gf3+–; 18.Nb7?! Qc7 19.Bf3 Qb7 20.Qd5 Bd5 21.Bd5 Qd5 22.Nd5 Nd7+–) 1–0. onur604 (2320) – Oberlappen (2185), lichess.org, 2020.

4.c4 b6 5.Nf3 Bb7 6.Be2 Nc6 7.a3 d5 8.cd5+– Ne5? (better 8...Qd5!? 9.Nc3 Qd6+–) 9.Nc3 (9.Be5 fe5 10.Bb5 Kf8+–) 9...Qd6 (9...Nf3 10.Bf3 Qd7 11.Rc1+–) 10.e4 (better 10.Ne5 Qe5 11.d4+–) 10...0–0–0? (10...Nf3 11.Bf3 c6 12.dc6 Bc6 13.d4+–) 11.0–0 (11.Nd4 c6+–) 11...f5? (11...Nf3 12.Bf3 Kb8 13.Nb5+–) 12.d4 (better 12.Nb5 Nf3 13.Bf3 Bb2 14.Nd6 Rd6 15.Rb1+–) 12...Nf3+– 13.Bf3 fe4 14.Ne4 Nf6 1–0. DEFFM – GuestPQNK, freechess.org, 2016.

4.c4 b6 5.Nf3 e6 6.b5 (6.d4 a6+=) 6...Nh6 (6...a6 7.Be2+=) 7.Bd3 (7.d4 a6+=) 7...Bb7 8.0–0 (8.Nc3 a6+=) 8...0–0 (8...a6 9.Nc3+=) 9.Nc3 d6 (9...a6 10.Be2+=) 10.Be4 (10.Be2 Qe7+=) 10...Be4 11.Ne4 d5 (11...c5 12.d4 f5 13.Neg5+=) 12.cd5 Qd5 13.Nc3 Qb7 (13...Qd7 14.Qb3+=) 14.Qb3+– Qc8 (14...Re8 15.Rfc1+–) 15.Nd5! Qd7 (15...ed5 16.Qd5 Double attack) 16.Nf4+– Re8 17.Nd4 Nf5 (better 17...Nf7 18.Nde6 c6+–) 18.Nde6 (18.Nde6 Kh8 19.Ng7 Kg7 20.Qd5+–) 1–0. DEFFM – GuestXVFQ, freechess.org, 2018.

4.c4 c6 5.a4 Qb6 (5...a5 6.b5+=) 6.b5 cb5 (6...a6 7.a5 Qd8 8.b6+=) 7.cb5 (7.ab5 a6+=) 7...a6 (7...d5 8.Nc3 e6 9.Nf3+=) 8.Nc3 ab5 9.ab5 f5?? (better 9...Ra1 10.Qa1 Qc7+–) 10.Ra8+– e6 (10...Nf6 11.Rb8 0–0 12.Qb3 e6+–) 11.Rb8 (11.Rb8 Qc7 12.Rc8 Qc8 13.Ne4+–) 1–0. GuestPRNX – GuestHMSV, freechess.org, 2016.

4.c4 d5 5.b5 dc4 (5...e6 6.d4=) 6.Bc4+= Qd6 (6...Nd7 7.d4+=) 7.Qb3 e6 (7...Nh6 8.d4+=) 8.Ba3 (better 8.Nc3 Kf7 9.Nf3+–) 8...c5?? (better 8...Qd7+–) 9.bc6!+– Qc6 (9...bc6 10.Bd6 Combination; 9...Nc6 10.Bd6 Combination; 9...Qc6 10.Bb5 Pinning (10.Bb5 Decoy)) 10.Bb5 Ne7 11.Bc6 Nec6 (11...Nbc6 12.d4+–) 12.Nf3 (12.Nc3 Na5 13.Qb5 Nbc6+–) 12...a6 (12...g5 13.d4+–) 13.0–0 (13.Nc3 Na5 14.Qc2 Nbc6+–) 13...b5 14.d4 (better 14.Rc1+–) 14...Nd7 (14...Bd7+–) 15.Qe6 Kd8 1–0. DEFFM – GuestFYQZ, freechess.org, 2018.

4.c4 d5 5.cd5 Qd5 6.Nc3 Qd6 7.b5 Qb4 8.Qc2 f5? (8...c6 9.a3 Qa5 10.Rc1+=) 9.a3 (better 9.Nd5 Qb2 10.Nc7 Kd7 11.Rc1 Qc2 12.Rc2+–) 9...Qd6?? (9...Qc5 10.d4 Qd6 11.Nf3+–) 10.Nf3 (better 10.Ne4 fe4 11.Bg7+–) 10...a6?? (10...e5 11.d4 e4 12.Ne5+=) 11.Ng5 (better 11.Nd5! Bb2 12.Nc7 (12.Qb2?! Nf6 13.Nf6 ef6+–) 12...Kd7 13.Qb2 Qc7 14.Qd4 Ke8 15.Qh8+–) 11...Bf6 12.Nf3 c6 (12...Bg7 13.Nd5 Bb2 14.Nc7 (14.Qb2?! Nf6 15.Nf6 ef6+=) 14...Kd7 15.Qb2 Qc7 16.Qd4 Ke8 17.Qh8+–) 13.Bc4 (13.d4 Be6+–) 13...Be6 (better 13...ab5 14.Bg8 Bc3 15.Bf7 Kf7 16.Qc3 Rg8=) 14.Qb3 (better 14.Be6 Qe6 15.bc6 Nc6 16.d4+=) 14...Bc4–/+ 15.Qc4 cb5 (better 15...ab5!? 16.Qe2 e5–/+) 16.Qc8= Qd8 (16...Kf7 17.Qb7 Qc6 18.Qc6 Nc6 19.d4=) 17.Qb7+= Nd7 18.Nd4 (18.d4 Qc8 19.Qd5 Nb6=) 18...Bd4 (18...Qc8 19.Qd5=+) 19.ed4 Qb8 20.Qc6 Qc8 (20...Ngf6 21.d5=) 21.Qf3 (21.d5 e5 22.Qe6 Kf8+=) 21...Ngf6= 22.Rc1 Qb8 (22...Nb6 23.0–0 Qd7 24.Rc2=) 23.Nd5+= Nd5 24.Qd5 Nf6 25.Qc6 Kf8 (25...Kf7 26.d5 Rc8 27.Qe6 Kf8 28.0–0 Rc1 29.Rc1+– (worse 29.Bc1 Qd6=+)) 26.0–0 Ne4 (26...Ng4 27.g3+–) 27.d5 Rg8 28.Rfe1 Nd2?? (28...Qd8 29.Be5+–) 29.Qe6 (29.Re7 Qh2 30.Kh2 Nf1 31.Rf1 Ke7 32.Re1 Kd8 33.Bf6) 29...Qd6+– 30.Qd6 ed6 31.Re6?? (31.Rc7 Nc4 32.Bf6 Re8 33.Be7 Re7 34.Ree7 Nb6+–) 31...Rd8?? (31...Nc4 32.Rf6 Ke7 33.Re1 Kd8=) 32.Rce1 (better 32.Rc7 Ne4 33.Ree7+– (33.Rh7?! Ng5 34.Rf6 Ke8+–)) 32...Kf7? (32...Ne4 33.h4 Kf7 34.f3+–) 33.Re7 (33.Rf6!? Kg7 34.Re7 Kh6+–) 33...Kf8 34.Rh7 Nc4 (34...Re8 35.Bg7!! Rg7 36.Rh8 Rg8 37.Rg8 Kg8 38.Re8 Kf7+–) 35.Bf6 Re8 36.Be7 Re7 37.Ree7 Na3 (37...Rg7 38.Reg7 Nd2 39.Rb7 Kg8 40.Rhc7 Nf3 41.gf3 b4 42.Rc8) 38.Rhf7 1–0. GuestFKKV – GuestHGFB, freechess.org, 2017.

4.c4 d5 5.cd5 Qd5 6.Nc3 Qe5? 7.Nf3 (better 7.Nb5!? Qb2 8.Nc7 Kd8 9.Na8 Qb4 10.Nf3+–) 7...Qd6+– 8.a3 Bg4 9.Nb5 (better 9.h3 Bd7 10.d4+–) 9...Qc6?? (9...Qd7 10.h3 Bf3 11.Qf3+=) 10.Nbd4 (better 10.Rc1 Bf3 11.Qf3 Qf3 12.Nc7 Kd7 13.gf3+–) 10...Qe4 (10...Qb6 11.Bc4+=) 11.Qa4 (11.Bc4!? Bd7+–) 11...c6 12.d3 (12.Qb3 Nh6+–) 12...Qd5+= 13.Be2 (13.h3 Bd7+=) 13...e5= 14.Nc2 (14.h3!? ed4 15.hg4 de3 16.fe3=) 14...Nd7=+ 15.e4 Qd6 (15...Nb6!? 16.Qa7 Ra7 17.ed5 Nd5=+) 16.Ne3 Nb6 17.Qb3 Be6 (17...Qe6 18.Qe6 Be6 19.Rb1+=) 18.Qc2 Ne7 19.0–0 0–0 20.d4 ed4 21.Nd4 Bf7 22.Rfd1 Qc7 (22...Qf4 23.g3 Qh6 24.h4+–) 23.Nc4 (23.Bg4 Qf4+–) 23...Nc4 (23...Rae8 24.Nb6 Qb6 25.Bg4+–) 24.Bc4 Rad8? (better 24...Qc8+–) 25.Bf7+– Rf7 26.Ne6 (26.Ne6 Rd1 27.Rd1+–) 1–0. GuestQJBS – GuestGJJB, freechess.org, 2017.

4.c4 h6 5.Qc2 f5?? 6.Bg7+– Rh7 7.Bb2 e6 8.Nf3 Ne7 (8...d6 9.d4+–) 9.Ne5 (9.Be2!? d6+–) 9...d6 10.Ng6! Ng6 11.Be2 h5 (11...e5 12.d4+–) 12.e4 (12.0–0 e5+–) 12...Nf4+– 13.Bf3 (13.ef5 Qg5 14.fe6 Qg2 15.Qh7 Qh1 16.Bf1 Be6 17.Qh8 Kd7 18.Qg7 Ke8=) 13...Qg5 (better 13...Nc6!? 14.0–0 Ne5 15.Be5 de5+–) 14.g3+– Nh3 15.Bg2 h4?? (better 15...Nf4 16.Bf1 Ng6+–) 16.ef5 (better 16.Bh3!? hg3 17.hg3 e5+–) 16...hg3 17.hg3 ef5 (17...Qg4 18.Nc3 Ng5 19.Rh7 Nh7 20.fe6 Qe6 21.Qe4 c6+–) 18.Bh3 Re7 19.Kf1 Qh5 (19...c6 20.Bg2+–) 20.Bf6 (20.Nc3!? c6+–) 20...Re4 (20...Re4 21.Nc3 Qg6 22.Ne4 Nc6 23.Nd6 cd6 24.Re1 Kf7+–). GuestYTZJ – GuestZLWF, freechess.org, 2018.

4.c4 h6 5.Nf3 Rh7 6.c5 (6.d4 d6+–) 6...c6 (6...d5 7.Bd3 Kf7 8.0–0+–) 7.a4 (7.Nh4 d6+–) 7...a5 (7...d6 8.Qb3 d5 9.Bd3+–) 8.b5 d5 9.cd6 Qd6 (9...Qd6 10.Bc4 Combination; 9...ed6 10.Nc3 Combination) 10.Ba3 Qd5 11.Nc3 Qd8 (11...Qe6 12.d4+–) 12.Qb3 e6 13.Bc4 Qd7?? (better 13...Ne7+–) 14.Nd4+– e5 1–0. GuestRKXG – GuestNFPH, freechess.org, 2018.

4.Bc4 b6 5.a3 Bb7 6.Nf3 d5 7.Bb3 e5 8.Nc3 c6 9.d3 a5 10.0–0 ab4 11.ab4 Ra1 12.Qa1 Ba6 (12...Na6 13.Ba3+=) 13.e4 (13.b5!? Bb5 14.Nb5 cb5 15.Qa7+/–) 13...d4+= 14.Ne2 Bf8 15.Rd1 (15.Ne5!? fe5 16.Nd4+=) 15...Bb4= 16.Nfd4 (better is 16.c3!? dc3 17.Nc3=) 16...ed4–/+ 17.Nd4 h5 (better is 17...Bc8!?–/+) 18.Qa2 Nh6 19.Bc1?? (better is 19.Nc6 Nc6 20.Qa6+=) 19...Qd4–+ 20.Bh6 Rh6 21.Bg8 Qd7 22.f4 Bc5 23.Kh1 h4 24.Be6 Qd6 25.Bg8 Qd7 26.Qb2?? Qd4 27.Qb3 Bc8 28.Bf7 Kd8 29.Be6 Be6 30.Qe6 Rh8 31.e5 Qf4 32.ef6 Rf8 33.d4 Bd6 34.Qh3 g5 35.Kg1 Rf6 36.c3 Nd7 37.Re1 c5 38.d5 b5 (39.Qf3 Qh2 40.Kf2 Bg3 41.Ke2 Rf3 42.Kf3 Be1–+; 38...Qf2 39.Kh1 Qe1) 0–1. dugmak – Pawno Paul, ChessWorld.net, 2005.

4.Bc4 d5 5.Bb3 h5 6.Nf3 Bg4 7.h3 Bf3 8.Qf3 e6 9.c4 Ne7 10.cd5 ed5 11.d4 0–0 12.0–0 f5 13.Nc3 c6 14.b5 a6 15.bc6 bc6 16.Rab1 g5 17.Qh5 g4 18.hg4 fg4 19.Qg4 Rf6 20.g3 Rg6 21.Qe4 a5 22.a4 Ra7 23.Ba3 Rb7 24.Be7 Re7 25.Qg6 Qc8 26.e4 Re6 27.Bd5 cd5 28.Rb8 Qb8 29.Qe6 Kh7 30.Kg2 Qc7 31.Rh1 Bh6 32.Rh6 Kg7 33.Rg6 Kh7 34.Qg8# 1–0. Machete99 – guest357, ICC, 2002.

4.Bc4 d5 5.Be2=.

4.Bc4 e6 5.Ne2 Ne7 6.0–0 0–0 7.d3 a6 8.Nd2 b5 9.Bb3 Bb7 10.Ng3 (10.Ne4 a5 11.ba5 Be4 12.de4 Nec6+=) 10...d5 11.f3 (11.a4 Nbc6+=) 11...Nd7 12.e4 c5 13.a3 (13.bc5 Nc5 14.d4 f5=) 13...c4 14.dc4 (14.Ba2 Qc7 15.Ne2 a5=+) 14...dc4 15.Ba2 Qb6 16.Kh1 Rad8 17.Nc4 (better 17.Qe2=+) 17...Qc7?? (better 17...bc4 18.Qe2 f5 19.Bg7 Kg7 20.ef5 Nf5 21.Nf5 ef5–/+) 18.Na5 (18.Qd6!? Qc6 19.Qc6 Bc6+–) 18...Nc6 (18...Nc5 19.Qe1 Na4 20.Nb7 Qb7 21.Be6 Kh8 22.Qc1+–) 19.Be6 Kh8 20.Nc6 Bc6 21.Qe2 Nb6 22.Rfd1 (22.Rad1 Bd7 23.Bd7 Rd7 24.Rd7 Qd7+–) 22...Rd1 (better 22...Na4!? 23.c3 Qe5+–) 23.Rd1+– (23.Qd1?! Rd8 24.Qe2 Na4+–) 23...Rd8 24.Rd8 Qd8 25.Qd3 Qd3 (25...Qe7 26.Bb3+–) 26.cd3 Na4 (26...Bd7 27.Bf7+–) 27.Bd4 Bb7 28.Ne2 h5 (28...f5 29.e5+–) 29.Nf4 (29.g4 hg4 30.fg4 f5 31.gf5 Bd4 32.Nd4 Nb2 33.fg6 Nd3+–) 29...Kh7 30.Nd5 Bd5 (30...f5 31.e5+–) 31.Bd5 (31.ed5?! f5 32.Ba7 Be5+–) 31...f5 (31...Bh6 32.Bb7 Bc1 33.Ba6 Ba3 34.Bb5+–) 32.Bg7 (better 32.e5 Bf8+–) 32...Kg7 33.Bb7 Nb2 (33...Nc3 34.Ba6 Kf6 35.f4+–) 34.d4 (34.Ba6 Nd3 35.ef5 gf5 36.Bb5 Ne1+–) 34...Nd3 (34...Nc4+–) 35.Ba6 fe4 36.fe4 Nf2 37.Kg1 Ne4 38.Bb5 Kf6 39.Bc6 Nc3 40.Kf2 Ke6 41.b5 h4 (41...Na4 42.Kg3+–) 42.b6 g5 (42...Kd6 43.d5! Ne4 44.Kf3 h3 45.gh3 Nd2 46.Kf4 Nc4+–) 43.b7 Kd6 44.d5! Ne4 (44...Nd5 45.Bd5 Combination) 45.Ke3 (45.Ke3 Ke7 46.Ke4 Kf7 47.b8Q Kg7 48.Qb7 Kh8 49.Kf5 Kg8 50.Kf6 Kf8 51.Qf7) 1–0. Abdullaevich (1785) – xjanix (1675), lichess.org, 2015.

4.d4 b6 5.Nf3 Bb7 6.Nbd2 Nh6 7.Bc4 e6 8.0–0 0–0 9.Bb3 d5 10.b5 a6 11.a4 ab5 12.ab5 Qe8 (12...Ra1!? 13.Qa1 c6+=) 13.Ra8+– Ba8 14.c4 c6 15.Qa1 Nd7 16.Qa7 (better 16.cd5 cd5 17.Qa7+–) 16...Rf7?? (better 16...cb5 17.cb5 Nf5+–) 17.Ra1+– Rf8 18.cd5 cd5 (18...ed5 19.Qa8! Qa8 20.Ra8 Ra8 21.bc6+–) 19.Ba3 Rf7 20.Bb4 Bf8 (20...Nf8 21.Qa8 Qb5 22.Ba3+–) 21.Qa8 (21.Qa8 Qa8 22.Ra8+–) 1–0. guest505 – Valen, chessclub.com, 2019.

4.d4 d6 5.Nf3 Bg4 6.Be2 Qc8 (6...e5 7.h3 Be6 8.0–0+=) 7.c4 h5 (7...e5 8.h3 Be6 9.d5+=) 8.Nbd2 Nc6 9.a3 Nh6 (9...e5 10.h3 Bf5 11.d5+–) 10.d5 Ne5 11.Ne5 de5 12.Bg4 (12.Qc2 Bf5 13.e4 Bg4+–) 12...hg4 13.Qc2 Kf7 (13...Nf5 14.e4 Nd4 15.Qd3+–) 14.0–0–0 (14.Rd1 e6+–) 14...a5 15.b5 c6 16.dc6 bc6 17.Kb1 (17.b6 c5+=) 17...Rb8 18.a4 cb5 (better 18...Qc7!?=) 19.cb5+– (19.ab5?! Qc7=) 19...Qe6 20.Qb3 (20.Qc4+–) 20...Qb3 (better 20...g3!? 21.Qe6 Ke6 22.hg3 Ng4+–) 21.Nb3+– Nf5 22.Na5 Ra8 23.Bc3 Rhc8 (23...Ra7 24.Kc2 Nd6 25.b6+–) 24.Bb4+– Bf8 (24...Nd6 25.Rc1+– (25.Bd6?! Ra5 26.Ba3 Rc4=)) 25.Rc1 Rc1 26.Rc1 g5 (26...e6 27.Bf8 Ra5 28.b6+–) 27.Kb2 (27.b6 Rb8 28.b7 Nh4+–) 27...Kg6? (27...e6 28.Kb3+–) 28.Kb3 (better 28.b6!? Ra6 29.Rc6 Rb6 30.Rb6 Nh4+–) 28...e6 29.Bf8 Rf8 30.Rc6 Ra8 (30...Ne7 31.Ra6+–) 31.Nc4 (31.b6!? Ne7 32.b7 Rb8 33.Re6 Nf5+–) 31...Kf7 32.Rc7 Kg6 33.b6 Rb8 34.b7 g3 35.hg3 Ng7 36.a5 Ne8 37.Rd7 f5 38.a6 f4 39.a7 Rb7 40.Rb7 fg3 41.fg3 (41.a8Q Nf6 42.Qh8 Ng8 43.Qh7 Kf6 44.Qf7) 41...Ng7 42.Rg7! Kg7 43.Ne5 Kf6 44.Nc4 Kf5 45.a8Q Kg4 (45...Kf6 46.Qf8 Kg6 47.Ne5 Kh7 48.Qf7 Kh6 49.Qg6) 46.Qf3 1–0. Fournier,Frederic (1935) – vitolara (1610), Active, 2009.

4.d4 e6 5.Nf3 Ne7 6.c4 0–0 7.a3 f5 (7...d6 8.Bd3+=) 8.Bd3 c6 9.Nbd2 a6 (9...d6 10.0–0+=) 10.0–0+– c5 (better 10...b5!?+–) 11.bc5+– Nec6 (11...b6 12.cb6 Qb6 13.Rb1+–) 12.Qc2 b6 (12...Qc7 13.Rfb1+–) 13.cb6 (13.d5 ed5 14.cd5 Na5 15.cb6 Qb6 16.Bg7 Kg7+–) 13...Qb6 14.Rab1 Na5 15.c5 Qc6 (15...Qc7 16.Bc3+–) 16.Nb3 (better 16.d5!? Qc7+–) 16...Nb3 17.Qb3 d6 (17...a5 18.a4+–) 18.cd6 Qd6 19.Rfc1 Nd7 20.Bc3 Nb6?? (20...a5+–) 21.Bb4 Qd8 (21...Qd5 22.Bf8 Qb3 23.Rb3 Bf8 24.Rb6+–) 22.Bf8 Bf8 23.Qb6 Qb6 24.Rb6 Bd7 (24...Be7 25.Rcb1 Bf8 26.Rb8 Rb8 27.Rb8+–) 25.Rc7 (better 25.Ba6 Be7+–) 25...Rd8 (25...Bb5 26.Rc3+–) 26.Rbb7 (better 26.Bc4 Kh8+–) 26...Ba4 (26...Bb5 27.Bb5 ab5 28.Ng5+–) 27.Ba6 (better 27.Ng5 Re8 28.Nh7 Re7 29.Re7 Be7 30.Re7 Bb3+–) 27...Ba3 (27...Rd6 28.Ng5 Rc6 29.Bc4 Rc7 30.Rc7+–) 28.Rh7 (better 28.Ng5 Bd7 29.Rd7 Rd7 30.Rd7+–) 28...e5 (28...Bf8 29.Bc4 Rd6+–) 29.Ne5 (29.Bc4 Rd5 30.Bd5 Kf8 31.Rh8) 29...Bc5 30.Rbg7 (30.Bc4 Rd5 31.Bd5 Kf8 32.Rh8) 30...Kf8 31.Ng6 Ke8 32.Rh8 Bf8 33.Rf8 1–0. Fournier,Frederic (1850) – Iger, Active, 2008.

4.d4 f5 5.Nf3+= Nc6 (5...Nf6 6.Be2+=) 6.a3 d5 7.c4 Be6 (7...Nf6 8.Nc3+=) 8.cd5 Bd5 9.Nc3 Nf6 10.Nd5 Nd5 11.Qb3 (11.Bb5 0–0+–) 11...e6 (11...a6 12.Ng5 Qd6 13.Bc4+=) 12.Bc4 (12.Bb5 a5+–) 12...0–0 13.0–0 Nce7 14.Rfe1 a6 15.Rac1 b5 16.Bd5 (16.Be2 Qd6+=) 16...Nd5 17.Nd2 (17.Qd3 Qd7+=) 17...Qd7 18.Nb1 Nb6 (18...a5 19.ba5 Ra5 20.Rc5=) 19.Nd2 Na4 (19...a5 20.Bc3=) 20.Ba1 (20.Rc2 f4+=) 20...Kh8 (20...a5 21.Qc2 ab4 22.ab4=) 21.Rc2 (better 21.Qc2 Rf7 22.Nb3+=) 21...e5? (better 21...Nb6=) 22.de5+– Nb6 (22...Rae8 23.Nf3+–) 23.Bd4 (23.e6 Qe7+–) 23...Rae8 24.Rec1 Be5 (24...Nd5 25.Nf3+–) 25.Be5 (25.Rc7 Qd5 26.Be5 Qe5+–) 25...Re5 26.Nf3 (26.Qb2 Qg7+–) 26...Rd5 (26...Re7!?+–) 27.Rc7+– Rd3?? (better 27...Qd8+–) 28.Qb2 (28.Rd7?! Rb3 29.Rd6 Rc8+–) 28...Rd4 (28...Kg8 29.Rd7 Nd7 30.Qa2 Kh8+–) 29.Rd7 Nd7 30.Qd4 Nf6 31.Rc7 Kg8 32.Ng5 h6 (32...f4 33.Qe5 fe3 34.Qe7 ef2 35.Kf1 Rf7 36.Qf7 Kh8 37.Qg7) 33.Ne6 (33.Qd6 Re8 34.Qf6 Re7 35.Rc8 Re8 36.Re8) 33...Rf7 (33...Ra8 34.Qf6 Rd8 35.Qd8) 34.Rf7 (34.Qd8 Ne8 35.Qe8 Kh7 36.Rf7) 34...Kf7+– 35.Nc7 (35.Nd8 Ke7 36.Nc6 Ke6 37.Qe5 Kd7 38.Qf6 Kc7 39.Ne5 Kb7 40.Qc6 Ka7 41.Qc7 Ka8 42.Nc6 a5 43.Qc8) 35...Kg7 36.Na6 (36.Nd5 g5 37.Qf6 Kh7 38.Ne7 h5 39.Qf7 Kh6 40.Nf5) 36...g5+– 37.Nc5 Kg6 38.f3 (better 38.Qd6 Kf7+–) 38...g4 39.e4 (39.Qd6 g3 40.Nd7 gh2 41.Kh2 Kf7 42.Qf8 Kg6 43.Ne5 Kg5 44.f4 Kh5 45.Qf7 Kh4 46.g3) 39...gf3 40.gf3 (40.ef5!? Kf5 41.Qd3 Ke5 42.gf3 Kf4+–) 40...fe4 41.Ne4 Ne4 42.Qe4 Kg5 43.Qe5 Kh4 (43...Kg6 44.Qe6 Kg7 45.f4 h5 46.f5 h4 47.Qg6 Kf8 48.f6 h3 49.Qg7 Ke8 50.Qe7) 44.Qb5 (44.Qf4 Kh5 45.Qg4) 44...h5 45.a4 Kh3 46.Qh5 1–0. Fournier,Frederic (1775) – gley, Active, 2011.

4.d4 Nh6 5.c4 d5 6.cd5 Qd5 7.Nc3 Qd8 8.Bc4 Nd7 9.Nge2 Nb6 10.Bb3 e5 (10...Nf7 11.0–0+=) 11.a4 (11.de5 fe5 12.Qd8 Kd8+–) 11...ed4 (11...Nf7 12.de5 Ne5 13.Qd8 Kd8 14.0–0–0 Bd7 15.Nf4+–) 12.Nd4 f5 (better 12...a5!? 13.Qc2 Nf7+–) 13.a5+– Nd7?? (13...Bd4 14.Qd4 Qd4 15.ed4 Nd7+–) 14.Ne6 Qf6 15.Na4 Ne5 (15...Qe6 16.Be6 Bb2 17.Nb2+–) 16.Nc7 Kf8 (16...Ke7 17.Nd5 Ke8 18.Nf6 Bf6 19.Qd5+–) 17.Be5 Qe5 18.Qd8 (18.Qd8 Qe8 19.Qe8; 18.Na8?! Qa1 19.Ke2 Qd1 20.Rd1 Be5+–) 1–0. Pereira – Marekt, internet, 2020.

4.d4 Nh6 5.Nf3 0–0 6.Bc4 d5 7.Bb3 b5 (7...Qd6 8.0–0=) 8.e4 (8.Nc3 e6+=) 8...c6 9.ed5 cd5 10.Nc3 e6 11.Nb5 Qb6 12.Qe2 (12.c4 Bd7 13.Nc3 dc4 14.Bc4 Qb4+–) 12...a6 13.Nc3 White gets the initiative 13...Qb4 14.0–0 Re8? (14...Rd8 15.Na4+=) 15.Na4?? (15.Nd5!? Qb7+–) 15...Nd7 (15...Bd7 16.Nc5+–) 16.Rab1 (16.Bd5 Rb8 17.Bb3 Nf7+–) 16...Qb7 (16...Bb7 17.Rfe1+=) 17.c4 Nf5? (better 17...dc4 18.Qc4 Nb6 19.Nb6 Qb6+–) 18.cd5+– Nb6 (18...e5 19.de5 fe5 20.d6 Kh8 21.Ng5+–) 19.Nb6 (19.Nc5 Qc7+–) 19...Qb6 20.de6 (20.Rfe1 Qd6+–) 20...Kh8? (better 20...Be6 21.Ba4 Rec8+–) 21.d5 Nd6 (21...Bb7 22.Bc4 Qc5 23.Rfd1+–) 22.Nd4 (22.Ba4 Nb5 23.Nd4 Bb7 24.Nb5 ab5 25.Bb5 Qc5+–) 22...Bb7 23.Ba3 (23.Rfd1 Qa5 24.Qd2 Qc7+–) 23...Re7? (23...Qd4 24.Bd6 Bd5 25.Rbd1+–) 24.Bd6 (better 24.Rfc1!? Ree8 25.Qd3 f5+–) 24...Qd6 25.Bc4 (better 25.Rfd1+–) 25...Bd5+– 26.Bd5 (better 26.Rfd1!?+–) 26...Qd5= 27.Rfd1 Qd6? (better 27...f5!? 28.Nb5 Qe4 (28...Qe6? 29.Qe6 Re6 30.Nc7+–) 29.Qe4 fe4=) 28.Qc4 (28.Qf3 Ree8+–) 28...Rc7 (28...f5 29.Nf5 Qe6 30.Qe6 Re6 31.Ng7 Kg7 32.Rd7 Kf6 33.Rh7+–) 29.Qa4+– Qe7 (29...Rac8 30.Qb4 Qb4 31.Rb4+–) 30.Rb6 Rca7 (30...f5 31.Nb5 (31.Ra6 Ra6 32.Qa6 Bd4–/+) 31...Qe8 32.Ra6 Ra6 33.Qa6+–) 31.Nc6 (better 31.Qb3 Qe8 32.Nc6+–) 31...Qe8?? (better 31...Qe6 32.Nd8 Qg8+–) 32.Na7 (better 32.Qf4 Re7 33.Ne7 Qe7 34.Rd7+–) 32...Ra7 (better 32...Qa4 33.Rd7 Bf8–+) 33.Qe8 Bf8 1–0. aravind555 (1765) – jinjintao (1660). lichess.org, 2020.

4.Be2 b6 5.Bf3 c6 6.c4 Bb7 7.b5 Qc7 8.a4 c5 9.d4 cd4 10.ed4 d6 11.Nd2 Nd7 12.Rc1 Nh6 13.Ne4 0–0 14.Ne2 Nf5 15.Nf4 Nh4 16.Ne6 Nf3 17.gf3 Qc8 18.Nf8 Nf8 19.Qb3 Qh3 20.c5 Kh8 21.c6 Bc8 22.d5 Bf5 23.Qe3 Qg2 24.Ng3 Re8 25.Qf4 Bd3 26.Rc3 Bb1 27.Ke2 e5 28.Qc1 Ba2 29.Qd1 e4 30.f4 Qf3 31.Rf3 ef3 32.Kf3 f5 33.Bg7 Kg7 34.Re1 Re1 35.Qe1 Bd5 36.Ke3 Ne6 37.Kd2 Nd4 38.Qe7 Kh6 39.Qf8 1–0. ArgosZgZ – hassanelmerabet, lichess.org, 2020.

4.Be2 d5 5.Bh5 gh5 6.Qh5 Kd7 7.Qd5 Ke8 8.Qh5 Kf8 9.Nf3 Nh6 10.Nd4 e5 11.Nb5 Bg4 12.Qh4 Kf7 13.h3 Bf5 14.a3 Bg6 15.Qc4 Kf8 16.Nc7 Bf7 17.Qc5 Kg8 18.Na8 Nd7 19.Qa7 Bf8 20.Qb7 Nf5 21.Qf3 Qc8 22.Nc3 Nh4 23.Qg4 Ng6 24.Nb6 Nb6 25.Qg6 Bg6 26.g4 Nc4 27.Rb1 Qd8 28.d3 Nb2 29.Rb2 Qc7 30.Ne4 Be4 31.de4 Qc6 32.g5 Qe4 33.Rg1 f5 34.g6 h6 35.Rb3 Qc2 36.g7 Bg7 37.Rg7 Kg7 38.Rc3 Qc3 39.Kf1 Kh7 40.h4 Rg8 41.h5 Qc1 42.Ke2 e4 43.f3 Rg2 0–1. AleksandrNekhoroshik – Kabarel (1625), lichess.org, 2020.

4.Be2 e5 5.Nf3 (--> 4.Nf3 e5 5.Be2).

4.Be2 Nh6 5.Nf3 Nf7 6.d3 0–0 7.c4 c6 8.Nbd2 Qb6 9.a3 d5 10.c5 Qc7 11.Qc2 Nd7 12.0–0 a5 13.e4 de4 14.Ne4 ab4 15.ab4 Ra1 16.Ra1 b6 17.Nd4 bc5 18.Ne6 Qb6 19.bc5 Qb7 20.Nf8 Nf8 21.h3 Ne6 22.Bf3 Neg5 23.Ng5 Ng5 24.Be2 Qd7 25.f4 Ne6 26.Ra8 f5 27.Bg7 Kg7 28.Kh2 Nd4 29.Qc3 Bb7 30.Ra7 Kh6 31.Bf3 Nf3 32.gf3 Qc8 33.Qe5 e6 34.h4 Ba6 35.Qg7 Kh5 36.Qh7 1–0. ArgosZgZ (1625) – Anderson_Jacobina, lichess.org, 2018.

4.Ne2 Nc6 5.b5 Ne5 6.f4 (6.Ng3 d5+=) 6...Nc4= 7.Bc3 a6 8.Ng3 ab5 9.d3?? (better 9.a4=) 9...Ne3–+ 10.Qe2 Nd5 11.Bb2 (better 11.f5–+) 11...Nf4 12.Qf3 e5 13.Be2 Rb8 (13...Qe7 14.d4–+) 14.0–0 b6 15.Ne4 (15.Qe3 Bh6 16.Qf2 Bb7–+) 15...Bb7 16.g3 (16.Qe3 Bh6 17.Qf2–+) 16...Nh3 (worse 16...Ne2 17.Qe2 d5 18.Ned2–+) 17.Kg2 Be4 (better 17...Ng5 18.Qf2 f5–+ (worse 18...Ne4 19.de4 Be4 20.Kg1–+; 18...Be4?! 19.de4 Ne4 20.Qe3–+)) 18.de4 Ng5 19.Qe3 Ne7 (19...c6 20.Rd1–+) 20.Bb5 c6 21.Bc4 d6 22.h4 (22.Nd2 d5 23.ed5 Nd5–+ (worse 23...cd5 24.Bb5 Kf7 25.Qg5+–)) 22...Nf7 23.Nd2 (23.Ba3 b5 24.Be6 Qc7–+) 23...d5 24.ed5 cd5 (24...Nd5!? 25.Qf2–+) 25.Bb5 Kf8 26.Qf2 (26.Qe2 Kg8–+) 26...d4 27.Ne4 (27.Nf3 Nf5 28.Rfe1 Ne3 29.Kg1 Qd5–+) 27...Nd5 (better 27...Qd5 28.Qe2 Rc8–+) 28.Bc4?? (28.Rae1 f5 29.Bc1 Qc7–+) 28...b5 (better 28...Ne3 29.Qe3 de3 30.Ba3 Kg8 31.Nd6–+) 29.Bd5? (better 29.Ba3 Ke8 30.Nd6 Nd6 31.Bd5–+) 29...Qd5 30.Qf3 f5 31.Ba3 (31.Nd2 Qf3 32.Nf3–+) 31...Kg8 (better 31...b4 32.Rab1 fe4 33.Bb4 Ke8–+) 32.Nf6!!+– Bf6 33.Qd5 A pinning theme 33...b4 (33...Kg7 34.Qb3+–) 34.Bb2 (better 34.Rab1!? Be7 35.Qe6 Kf8+–) 34...Kg7 35.a3 Rhd8 36.Qa2 (36.Qc4 Rdc8 37.Qe2 ba3 38.Ba3 Rc3+–) 36...Nd6 (36...Rdc8 37.Rf2 ba3 38.Qa3+–) 37.ab4 Rb4 38.Ba3 Rb6 39.Bc5 Rc6 (39...Rb7 40.Qd5 Rbd7 41.Bd6 Rd6 42.Ra7 Kh6 43.Qf7+–) 40.Qa7 (better 40.Qe6 Rdc8 41.Qd7 Nf7+–) 40...Kh6 (40...Kg8 41.Bd6 Rdd6 42.Qb8 Rd8 43.Qb3 Kf8 44.Qb7 Rc2 45.Rf2 Rf2 46.Kf2+–) 41.Bd6 (better 41.g4!? Bh8+–) 41...Rdd6?! (41...Rc2 42.Rf2 Rf2 43.Kf2 Rd6 44.Qf7+–) 42.Rf2 (42.Qf7 Rc2 43.Kh3 Rc8+–) 42...e4 (42...Re6 43.Qa8 Rc7 44.Ra6 Ra6 45.Qa6+–) 43.g4 (better 43.Qf7 Rd8 44.Ra7+–) 43...fg4?? (43...Bh4 44.Rh1 Kg5 45.Qe7 Rf6 46.Re2 Kg4 47.Re4 Kg5 48.Reh4+– (48.Rhh4?! Rc2 49.Kg1 fe4+–)) 44.Rf6 (44.Qf7 Re6 45.Ra7 Rc7 46.Rc7 Re7 47.Qf6 Rf7 48.Rf7 Kh5 49.Rh7) 44...Rf6 45.Qd4 Rfe6?? (45...Rc2 46.Kg1 Rcf2+–) 46.c4 (46.Ra7 Re7 47.Re7 Rc2 48.Kg3 Rg2 49.Kg2 g3 50.Qe3 Kh5 51.Qg5) 46...e3 (46...Rc7+–) 47.Qf4 Kg7 48.Ra7 Kh8 (48...Rc7 49.Qc7 Re7 50.Qe7 Kh6 51.Qh7) 49.Qf7 (49.Qf8) 49...Rc7 (49...Rc4 50.Qh7) 50.Qg7 (50.Qf8) 50…Kg7 (50...Kg7 51.Rc7 Kh6–+; better 50...Rg7 51.Ra1–+) 0–1. aravind555 (1740) – echess2016 (1725), lichess.org, 2020.

4.Ne2 d6 5.Ng3 e6 6.Be2+= Qe7 7.0–0 Bd7 8.c4 f5 9.Bf3?? (better 9.Bg7 Qg7 10.Nc3+–) 9...Bb2–+ 10.Bb7 Bc6 (10...Ba1 11.Ba8 Bg7 12.Qf3–+) 11.Ba8 Ba8 12.Nc3 Ba1 13.Qa1 (better 13.Qa4 Bc6 14.Qa7 Bc3 15.Qb8 Kf7 16.dc3–+) 13...h5?? (better 13...Nf6–+) 14.Nd5+= Qh7 (14...Bd5 15.Qh8 A pinning theme) 15.Nc7+– Kf8 (15...Qc7 A deflection 16.Qh8 A pinning theme) 16.Na8+– h4 17.Ne2 h3 (better 17...e5 18.f4 h3+–) 18.Nc7?? (better 18.Qd4 hg2 19.Qd6 Ne7 A) 20.Qb8 Kf7 21.Qd6 gf1R 22.Kf1 Ra8=+ (worse 22...Qh2 23.Qh2 Rh2 24.a3+=); B) 20.Kg2?! Qh3 21.Kg1 Qg4 22.Ng3 Qh3+–; C) 20.Rb1+–) 18...hg2–+ 19.Ne6 White launches an attack 19...Ke7 (better 19...Ke8 20.Qh8 gf1R (20...Qh8?! 21.Rb1–+) 21.Kf1 Qh8–+) 20.Kg2 (20.Qg7 Qg7 21.Ng7 gf1R 22.Kf1–+) 20...Qh2 Black creates threats along the open h–file (20...Qh3 21.Kg1 Qh2) 21.Kf3 Ke6 (21...Qh5 22.Kg2 Qh3 23.Kg1 Qh2) 22.Nf4=+ Kf7 23.Ke2 (23.Rg1 Ne7=+) 23...Nf6 (better 23...g5!? 24.Nd5 Nc6=+) 24.Qd4= Ne4? (better 24...Nbd7!? 25.Qa7 g5=) 25.Qd5 (better 25.Qa7 Kf6 26.Qd4 Kf7 27.Ke1+–) 25...Kf6?? (better 25...Kg7 26.Qb7 Kf6 27.Nd5 Kg5+–) 26.Qe6+– Kg5 (26...Kg7 27.Qe7 Kh6+–) 27.Qg6 Kh4 28.Rh1 (28.Ng2 Qg2 29.Qg2 Nf2 30.Kf2 f4 31.Rh1) 28...Qh1+– 29.Ng2 (29.Qf5 Rh6 30.Ng6 Rg6 31.Qg6 Nf2 32.Qf6 Kh3 33.Qf5 (worse 33.Kf2 Qg2 34.Ke1 Qg3 35.Ke2 Nd7 36.Qf5 Qg4 37.Qg4 Kg4+–) 33...Kh2 34.Qf2 (34.Kf2?! Qg2 35.Ke1 Nc6=) 34...Qg2 35.Qg2 Kg2 36.d4+–) 29...Kh3= 30.Nf4 (better 30.Ne1 Rh4 31.Qf5 Rg4 32.Qh7 Rh4 33.Qf5 Rg4 34.Qh7 Rh4 35.Qf5=) 30...Kh2–+ 31.Qf5?? (31.d3 Nc3 32.Kd2 Nb1 33.Kc2–/+) 31...Kg1 (better 31...Nc6 32.Nh5 Qg2–+) 32.Qg4 Ng3?? (32...Kh2 33.Qf5 Nc6–+) 33.Qg3 (33.fg3 Nc6 34.Qg7 Rh2 35.Kd3 Ne5 36.Kc3 Kf2 37.Nd3 Nd3–+) 33...Qg2 34.Qg2 1–0. aravind555 (1690) – VICTOR_CASTELO (1675), lichess.org, 2020.

4.Ne2 e5 5.Ng3 d5 6.c4 Ne7 7.cd5 Qd5 (7...Nd5 8.b5=) 8.Nc3 Qd8 9.Be2 c6 10.0–0 Be6 11.Nce4 f5 (11...Bd5 12.f4=) 12.Nc5+= Bf7 (12...Qd6!?+=) 13.Nb7+– Qc7 14.Nc5 Qb6 (14...Nd7!?+–) 15.a3 Na6?? (better 15...h5+–) 16.Na6 (16.Ba6 0–0+–) 16...Nd5 17.Nc5 Nb4 (17...a5+–) 18.ab4 Qb4 19.Ba3 (19.Nd3 Qb3+–) 19...Qb6 (19...Qh4 20.Nb7 Bd5 21.Nd6 Kd7 22.e4 fe4 23.Bc5+–) 20.Rb1 Qa5 (20...Qd8 21.Nb7 Qd5 22.Nd6 Kf8 23.Qa4+–) 21.Bb4 (21.Qc1 Bf8+–) 21...Qa6 (21...Qc7+–) 22.Na6 (22.Na6 Bd5 23.Nc7 Kf7 24.Qa4+–) 1–0. aravind555 – damseleve0007, lichess.org, 2019.

4.Ne2 e5 5.Ng3 Ne7 6.Bc4 d5 7.Bb3 0–0 8.c4 c6 9.cd5 cd5 (9...Nd5? 10.e4 Be6 11.ed5 cd5 12.0–0+–) 10.0–0 Be6 11.Nc3 Nd7 12.Rb1 Nb6 13.a4 (13.Nge4 Qc8 14.Nc5 a5+=) 13...Kh8 (13...Nc4 14.Ba1=+) 14.a5 (14.d3 Nc6=) 14...Nc4=+ 15.Ba1 f5 16.d3 Nd6 (16...Na3 17.Rc1 Qd6 18.Na2=) 17.Qc2 (17.f4 ef4 18.Rf4 b6+=) 17...f4= 18.ef4 ef4 19.Nge2 (better 19.Nge4 f3 20.Rfe1 Ne4 21.de4=) 19...d4?? (better 19...f3 20.Ng3 fg2–/+) 20.Nd4 Bd4 (20...Bb3 21.Nb3 f3 22.Ne4 Ba1 23.Ra1 fg2 24.Kg2+=) 21.Be6+– Rf6 (21...f3 22.g3+–) 22.Bc4 (22.Rfe1 f3+–) 22...Rc8 (22...f3 23.Ne4 fg2 24.Kg2 Ne4 25.de4 Ba1 26.Ra1 Nc6+–) 23.Ne2 (better 23.Rfd1!?+–) 23...Ba1+= 24.Ra1 b5 (24...f3!? 25.gf3 Nc6+=) 25.ab6+– ab6 (better 25...Qb6!? 26.Qc3 Nc4 27.dc4 Nd5+–) 26.Qb2+– Do you see the mate threat? 26...Nc6 (26...Qf8 27.Nf4 Qg7 28.Nd5 Nd5 29.Bd5+–) 27.Nf4 (better 27.Be6 Rc7 28.Ra8 Qa8 29.Qf6 Rg7 30.Ra1+–) 27...Ne5?? (27...Nc4 28.dc4 Qd4 29.Qd4 Nd4+–) 28.Qe5 Kg7 (28...Nc4 29.dc4 Qd6 30.Qd6 Rd6+–) 29.Ne6 Kh6 30.Nd8 (30.Nd8 Rd8 31.Qf6+–; 30.Qg5) 1–0. aravind555 (1650) – danmunyoz (1775), lichess.org, 2019.

4.Ne2 e6 5.Ng3 Ne7 6.Nc3 d5=.

4.Ne2 e6 5.Ng3 Ne7 6.Bc4 0–0 7.0–0 a6 8.a4 c6 9.Bb3 b6 10.c4 Bb7 11.Na3 f5 (11...c5 12.bc5 bc5 13.Rb1=) 12.Bg7+= White is in command 12...Kg7 13.Nc2 (13.c5 d5+=) 13...d5 (13...a5 14.d4=) 14.c5 (14.d4 a5+=) 14...b5 (14...a5 15.d4+=) 15.Nd4 Bc8 (15...Rf6 16.Nf3+–) 16.ab5 cb5 17.Nb5 Bb7 (17...Nbc6!?+–) 18.Nd4 Kf7 (18...Qd7 19.Nc2+–) 19.d3 (19.Nc2 Nbc6+–) 19...Nec6 20.Nf3 (better 20.Nc2!?+–) 20...Nb4+– 21.e4 (21.Qd2!? N8c6 22.d4+–) 21...de4+= 22.de4 Qd1 (22...fe4!? 23.Nd2 Bd5+=) 23.Rfd1+– (worse 23.Bd1 Nd7=+ (23...fe4?! 24.Ne4 Ke7 25.Nd6=; 23...Be4?! 24.Ne4 fe4 25.Ng5 Ke7 26.Ne4=)) 23...Be4 (23...f4 24.Ne2 Ke7 25.Rd6+–) 24.Ng5+– Kf6? (24...Ke7 25.Rd6 Bc6 26.Re1+–) 25.N5e4 (better 25.Nh7 Ke7 26.Nf8 Kf8 27.Ne4 fe4 28.Rd8 Ke7 29.Rd6+–) 25...fe4 26.Ne4 Kg7 (26...Kf5 27.Nd6 Kf6 28.Rd2+=) 27.Rd6 (27.Ng5 Rc8 28.Ne6 Kh8+–) 27...e5 (27...Rf5 28.Be6 Re5 29.Re1+–) 28.Re6 (better 28.Ng5!? Kh8 29.Rad1+–) 28...N8c6+– 29.Bd5 Nd5 30.Rc6 Nb4 31.Re6 Rfe8 (31...a5 32.Re7 Kg8 33.Re5+–) 32.Re8 (32.Rb6 Reb8 33.Rd1 Kf8+–) 32...Re8+= 33.Ra4 Rd8 Threatening mate: Rd1 34.g3 Rd4 35.f3 Nc6? (better 35...h6+=) 36.Ra6+– Nb4 (36...Rd1 37.Kf2 Nd4 38.Ra7 Kf8 39.Nf6+–) 37.Ra4 (37.Ra7!? Kg8+–) 37...h6 (37...Nc6 38.Ra3+–) 38.Kg2 g5 39.Kh3 Kg6 40.Ra7 (40.Ra8 Rd3 41.c6 Nc6+–) 40...h5 41.Re7 (better 41.g4!? hg4 42.Kg4+–) 41...g4+= 42.fg4 (better 42.Kg2!? Nd3 43.Re6 Kg7 44.c6+=) 42...hg4 (42...Re4 43.gh5 Kh5 44.Re8–/+) 43.Kg4=+ Re4 44.Kf3 Re1 45.c6? (45.h4 Kf6 46.Rb7 e4 47.Kg4–+) 45...Kf6–+ 46.Rh7 Rc1 47.c7 Kg6 48.Re7 Kf6?? (48...Rc3 49.Ke2 Kf6 50.Rh7–+) 49.Rh7 Rc3 50.Kg4 Kg6 (50...Nd5 51.Rh6 Kg7 52.Re6–+) 51.Re7 (51.Rd7 Rc4 52.Kf3 Kf5–+) 51...Rc4 52.Kh3 Kf6 53.Rh7 Nd5 54.Rh6 (54.g4–+) 54...Kg7?? (better 54...Kg5 55.Rh8 Rc7–+) 55.Re6= Kf7 (55...Rc7 56.Re5 Rc5 57.Kh4=) 56.Re5 Nc7 57.Rf5 (57.g4 Ne6=) 57...Kg6 (57...Ke6 58.Ra5=) 58.Rf4 Ne6?? (better 58...Rc2=) 59.Rc4+– Kf6 (59...Nd8 60.Kg4+–) 60.g4 (better 60.Rc6 Kf7 61.Re6 Ke6+–) 60...Ng5 (60...Ke5 61.Kg3+–) 61.Kg3 Ne6 (61...Kf7 62.h4 Ne6 63.g5+–) 62.h4 Ng7 (62...Ke5 63.h5+–) 63.g5 Ke6 (63...Kf5 64.Rf4 Kg6 65.Rf6 Kh7 66.Rf7+–) 64.Rc6 (64.Kg4 Ke5 65.g6 Nf5+–) 64…Kd5 (64...Kd5 65.Rc7 Ne6+–) 0–1. aravind555 (1685) – yasar46 (1640), lichess.org, 2019.

4.Ne2 e6 5.Ng3 Ne7 6.Be2 0–0 7.0–0 d6 (7...d5 8.Bc3=) 8.c4 Nd7 9.Nc3 (9.d4 f5+=) 9...c6 (9...a5 10.ba5 f5 11.d4=) 10.Rb1 e5 11.d3 b6 (11...f5 12.Qb3=) 12.Nce4 (12.Bf3 f5+=) 12...Nb8 13.Qc2 (13.f4 d5 14.fe5 fe5 (14...de4? 15.ef6 ed3 16.Bd3+–) 15.Rf8 Qf8+=) 13...d5 14.cd5 cd5 15.Nd2 Be6 16.Bf3 Nd7 17.Nb3 Rc8 18.Qd2 f5 19.a3 Qe8 (19...d4 20.Ba1=) 20.Rfe1 e4 (20...Bh6 21.Rbc1=) 21.de4 (21.Bg7 Kg7 22.Be2 Qf7+=) 21...fe4 22.Be2 (22.Bg7 Kg7 23.Be2 Qf7+=) 22...Ne5= 23.f4 (23.Nd4 Bg4=) 23...Ng4 (23...ef3 24.gf3 Nf3 25.Bf3 Rf3 26.Bg7 Kg7+=) 24.h3 (24.Bg7 Kg7 25.Nd4 Bd7+=) 24...Nh6 (24...Bb2 25.Rb2 Nh6 26.Rd1=) 25.Bg7+= Kg7 26.Qd4 (26.Ba6 Rd8+=) 26...Kg8= 27.Qe5 Nhf5?? (27...Nc6 28.Qb2=) 28.Nf5?? (better 28.Qe6 Qf7 29.Qf7 Rf7 30.Nf1+–) 28...Bf5 (28...Nf5 29.Nd4 Nd4 30.Qd4= (worse 30.ed4 Rf5 31.Qd6 Rc6–/+)) 29.g4 Bd7 30.Nd4 (30.Ba6 Rc2+=) 30...Qf7= 31.Rf1 Rfe8 32.Qd6 (32.Qg5 Qg7+=) 32...Nc6= 33.f5 (better 33.Nb3=) 33...Ne5?? (better 33...Nd4 34.ed4 gf5–/+) 34.fg6+– Qg6 35.Rf6 (35.Qd5!? Kh8 36.Rf4+–) 35...Qg5+= 36.Nf5?? (better 36.Rf4 Kh8 37.Kg2=) 36...Bf5–+ 37.Qd5 (37.Rf5 Qe3 38.Kf1 Qh3 39.Ke1 Qc3 40.Kf1 Rcd8–+) 37...Kh8 (better 37...Be6! 38.Re6 Nf3 39.Bf3 Qd5 40.Re8 Re8–+) 38.Rf5 Qe3 39.Rf2 Ng6?? (better 39...Rc2 40.Rb3 Nf3 41.Kg2 Ne1 42.Kg1 Rc1–+) 40.Rb3=+ Rf8?? (40...Rc1 41.Bf1 Nf4 42.Qe5 Re5 43.Re3 Nd5–/+) 41.Re3+– Rf2 42.Kf2 Rf8 43.Ke1 Nf4 44.Re4 (44.Qe5 Kg8 45.Bc4 Ne6 46.Be6 Rf7 47.Qf4 Kh8 48.Qf7 b5 49.Qf6) 44...Nd5+– 45.Rd4 Nc3 (45...Nf4!?+–) 46.Kd2 (46.Bd3 Rf7+–) 46…Nb5?? (46...Nb5 47.Bb5 Rf3+–; better 46...Nb1 47.Kc2 Rf2 48.Rd8 Kg7 49.Rd7 Kg8 50.Kb1 Re2 51.Ra7 Rh2+–). aravind555 (1755) – Blaz58 (1810), lichess.org, 2020.

4.Qf3 e5 5.Bc4 Ne7 6.Be5 fe5?? (better 6...d5 7.Bb5 c6 8.Bb8 Rb8+=) 7.Qf7 1–0. GuestRDTV – GuestCWMP, freechess.org, 2019.

4.Nf3 a5 5.b5 c6 6.a4 (6.Nc3 f5+–) 6...Qb6 (6...e5 7.h4+–) 7.d4 (7.Nc3 Nh6+–) 7...Nh6+– 8.Bd3 0–0 (8...Na6 9.c3+–) 9.c4+– e6 (better 9...d6!?+–) 10.c5+– Qc7 (10...Qd8 11.Nc3+–) 11.Nbd2 d6 (11...Nf7 12.Nc4+–) 12.cd6 Qd6 13.Ba3 Qc7 14.Bf8 Bf8 15.0–0 (15.Qb3 Nf5+–) 15...Bb4 (15...Nd7 16.Ne4 f5 17.bc6 bc6 18.Neg5+–) 16.Qb3 Kg7 17.Ne4 f5 (17...Nf5 18.Rfc1+–) 18.Neg5 Nf7 (18...Qe7 19.Bc4 Nf7 20.Ne6 Be6 21.Be6 cb5 22.ab5+–) 19.Ne6 Be6 20.Qe6 Nd7 21.Rfc1 (21.bc6 bc6 22.Rab1 Rd8+–) 21...c5 22.Bc4 Nf8 (22...Rf8+–) 23.Qf7 Qf7 24.Bf7 Kf7 25.d5 (better 25.dc5 Ke7+–) 25...Rc8 (25...Rd8 26.Ne5 Ke7 27.Nc4+–) 26.Ne5 Kf6 27.Nc4 Nd7 28.f4 (better 28.Rd1+–) 28...g5 (28...Rd8+–) 29.fg5 Kg5 30.Nd6 (30.Rf1!? Rd8+–) 30...Rc7 31.Rf1 f4 (31...c4 32.Nf5 c3+–) 32.Rf4 Bd2 (32...c4 33.b6 Bd6 34.bc7 Bc7+–) 33.Ne4 Kg6 34.Nd2 c4 1–0. DEFFM – albann, freechess.org, 2020.

4.Nf3 a6 5.Bc4 Nc6 6.a3 b5 7.Bg8 Rg8 8.d4 d6 9.d5 Ne5 10.Ne5 fe5 11.Nd2 (11.a4 ba4 12.Ra4 e6+=) 11...Rf8 12.Qe2 e6 13.e4 ed5 14.ed5 Bb7 15.0–0–0? (better is 15.Qd3=+) 15...Bh6 16.Kb1 Bd5 17.Rhf1 (better is 17.Ne4!? Bc4 18.Qe1–+) 17...Bg2 18.Rg1 Bd2 (18...Bc6 19.Rge1 Qe7 20.Ne4–+) 19.Rd2 (19.Rg2 Bf4–+) 19...Bf3 20.Qe3 Qd7 (better is 20...Qf6!?–+) 21.Rg3 Bc6 22.Qg5? (better is 22.Be5 0–0–0 23.Qc3–/+) 22...Rf7 23.Be5 (23.Re3 Qe7 24.h4–+) 23...Rf5 (23...de5 24.Rd7 Kd7 25.Qe5+/–) 24.Qh4 Re5 25.Qf4 Re1 26.Kb2 Qg7 27.c3 Kd7 28.Qg4 Re6 29.Re3 Rae8 30.Rde2 Bd5 31.Qd4 (31.Rd2 Kc6 32.Qg5 Re5–+) 31...Bc4 (better is 31...Qd4 32.cd4 Re3 33.fe3 Bc4–+) 32.Qg7+= (32...R8e7 33.Qe7 Ke7 34.Re6 Be6 35.h4+=) +=. lidl4 – nexx, Live Game Caissa's Web, 2004.

4.Nf3 b6 5.b5 Bb7 6.d4 Nh6 7.c4 d6 8.Nc3 Nd7 9.Bd3 0–0 10.0–0 Kh8 (10...e5 11.Qb3 Nf7 12.Nd5+=) 11.Re1 Nf7 12.Nd5 Bd5 (better 12...Ng5!?+–) 13.cd5+– Rc8 (13...f5 14.Qb3+–) 14.Qb3 Nb8 (14...Ng5 15.Nd2+–) 15.h4 Nh6 (15...Qe8 16.a4+–) 16.Rac1 f5 (16...Nd7 17.Rc4+–) 17.Ng5 Rf6 (17...Qe8 18.Ne6+–) 18.Ne6 Qd7 (18...Qg8 19.Qa4 Re6 20.de6 Qe6 21.Qa7+–) 19.Qa3 Re6 20.de6 Qe6 21.Qa7 Ng4 (21...Qd7 22.Rc2 d5 23.a4+–) 22.Rc7 Nf6 (22...Rc7 23.Qc7 Nd7 24.Bc4+–) 23.Re7 Qg8 24.Rb7 Nd5 (24...Rd8 25.Qb6 Nd5+–) 25.Rc1 Rc1 26.Bc1 Nb4 27.Rb8 Bf8 28.Bc4! d5 (28...Qc4 29.Rf8 Mate attack) 29.Ba3 Qg7 (29...dc4 30.Qa8 Kg7 31.Bb4 c3 32.Rf8 Qe6 33.Qa7 Kh6 34.Rh8 Kh5 35.Rh7 Kg4 36.f3 Kg3 37.Qc7 Qd6 38.Bd6 f4 39.Bf4) 30.Qa8 dc4 (30...h5 31.Bb4 g5 32.Bd3 Qc7 33.Rf8 Kh7 34.Rh8 Kg6 35.Rg8 Kf6 36.Qf8 Qf7 37.hg5 Ke6 38.Qd6) 31.Rf8 Qf8 32.Qf8 1–0. Ddgs – Shatri, internet, 2019.

4.Nf3 b6 5.d4 Bb7 6.Nbd2 d6 7.Bd3 Nd7 8.c4 e6 9.a4 Ne7 10.Qc2 Nc6 (10...c5 11.b5+=) 11.b5 (11.Bc3!?+–) 11...Nb4= 12.Qc3 a5 (12...Nd3 13.Qd3 0–0 14.0–0=) 13.Be2 c6 14.Ba3 (14.bc6 Nc6 15.0–0 Rc8+=) 14...c5= 15.Bb4 (15.0–0 0–0=) 15...ab4=+ 16.Qc2 0–0 17.Bd3 (17.0–0 f5=+) 17...Qe7 (17...f5 18.0–0=+) 18.h3 e5 (better 18...f5=+) 19.d5? (19.Be4 Be4 20.Qe4 f5 21.Qd5 Kh8 22.de5 Ne5=+) 19...Bc8 (19...e4 20.Be4 f5 21.Ra2 fe4 22.Qe4–+) 20.h4? (20.0–0 e4 21.Ne4 f5=+) 20...f5 (better 20...e4 21.Be4 f5–+) 21.e4–/+ fe4 22.Ne4 Nf6 23.0–0–0 (23.Nfg5 Nh5–/+) 23...Ne4 (23...Bg4 24.Rdg1–+) 24.Be4 Bf5 (24...Bg4 25.Rdg1–/+) 25.Ng5 (25.Bf5!? Bh6 26.Kb1 gf5 27.Ng5=+) 25...Bh6–+ 26.Kb2 Be4 (better 26...Bg5!? 27.Bf5 Rf5 (27...gf5?! 28.hg5 Qg5 29.Rd3=+) 28.hg5 Rf7–+) 27.Ne4=+ Rf4 28.h5 g5 29.Rde1 Bg7 30.h6 Bh8 31.Rh5 Qf7?? (better 31...Bf6=) 32.Rg5+– Kf8 33.Nd6?? (better 33.g3 Rf3 34.Nd6 e4 35.Kc1+–) 33...e4=+ 34.Kb1 (better 34.Rg7!? Bg7 35.Kb3 Ra4 36.Qc1 (36.hg7 Qg7 37.Qb2 Ra3 38.Kc2 Rf2 39.Re2 Re2 40.Kd1 Qb2 41.Ne4 Ra1) 36...Rf3 37.gf3 Ra3 38.Qa3 Qf3 39.Kc2 Qf2 40.Kd1 Qe1 41.Ke1 ba3 42.hg7 Kg8 43.Ne4–+) 34...Qf6–/+ 35.Ne4?? (better 35.Rg7 Qd6 36.Rh7–/+) 35...Re4! 36.Qe4 (36.Qe4 Qb2 Mate attack; 36.Re4 Qa1 Mate attack) 36…Qb2 0–1. Dino_Jarach (1850) – gandasaputra17 (1830), lichess.org, 2020.

4.Nf3 b6 5.Be2 Nh6 6.0–0 Rg8 (6...Bb7 7.d4+=) 7.c4 (7.d4 Bb7+–) 7...Bb7 8.d4 Nf7 9.b5 (9.Nc3 a5 10.a3 e5+–) 9...h5 (9...a6 10.Nc3+–) 10.Qc2 f5 11.Nh4 (11.Nbd2 a6+–) 11...e6 (better 11...Bf6 12.Bf3 c6=) 12.Ng6?? (12.Bf3!? Bf3 13.Nf3+=) 12...Qg5 (better 12...Bh6!? 13.g3 Rg6 14.Bh5 Rg8–/+) 13.Nf4= e5 (better 13...Bd4!? 14.Bd4 Bg2=+) 14.Nd5 (14.de5 Be5 15.Be5 Ne5+–) 14...Kd8 (14...Bd5 15.cd5 ed4 16.f4+– (16.Qc7? Be5 17.Qc8 Ke7 18.Qg8 Qg8 19.ed4 Bf4–+)) 15.Qd1 (15.f4 ef4 16.Rf2 Bd5 17.ef4 Be4 18.Qe4 fe4 19.fg5 Ng5 20.Bh5 c5+=) 15...Nd6 (15...h4 16.Kh1+–) 16.Nbc3 (better 16.f4 ef4 A) 17.Rf4? Bd5 18.Bf3 Be4–+ (18...Nc4?! 19.Bd5 Ne3 20.Qf3 Nd5 21.Qd5=+); B) 17.Bf3 fe3 18.Qe2=+) 16...Nc4?? (16...ed4 17.ed4 Bd4+=) 17.Bd3 (better 17.Bc4 ed4 18.ed4 Bd4 19.g3+–) 17...Nd6 (better 17...Nb2 18.Qc2 Nd3 19.Qd3 ed4 20.ed4 Bd5 21.Nd5 Bd4–+) 18.Be2?? (18.f4 ef4 19.Nf4 Bd4 20.ed4 Bg2=+) 18...e4?? (better 18...ed4 19.f4 Qg6 20.Bh5 Qe6 21.ed4 Bd5–+) 19.Nf4+= (worse 19.Bh5 Bd5 20.h4 Qh4 21.Nd5 Rh8–/+) 19...Bh6 (19...a6 20.Qb3 Bh6 21.Bh5 ab5 22.Ba3+=) 20.Bh5 Qg7 21.Ng6 Nc4 (21...Qf6 22.Ne5+=) 22.Qe2 Nd6 (22...Nb2!? 23.Qb2 Qh7+=) 23.Ba3+– Ne8 (23...Qf6 24.Ne5+–) 24.Be7+– Kc8 25.Qc4 d5?? (better 25...Qh7 26.Ne5 Qg7+–) 26.Nd5 a6 (26...Nd7 27.Rac1 Bd5 28.Qd5 Kb8 29.Qd7 Kb7+–) 27.Nb6 1–0. GuestRBKP – GuestZPHD, freechess.org, 2018.

4.Nf3 c6 5.c4 e6 6.d4 Ne7 7.Be2 d5 8.Nc3 Nd7 9.b5 b6 (9...dc4 10.Bc4 Nb6 11.Bd3+=) 10.0–0 Bb7 11.bc6 Bc6 12.Qb3 0–0 (12...Nf8!?+=) 13.Ba3+– a5 14.cd5 ed5 15.Be7 Qe7 16.Nd5 Bd5 17.Qd5 Kh8 18.Rac1 Ra7 19.Rc6 Rd8 20.Qc4 f5 21.a4 Nb8 (21...Rb7 22.Rc1+–) 22.Re6 (22.Rb6 Nd7 23.Rb5 Nf6+–) 22...Qf8 (22...Qb4 23.Qa2+–) 23.Rc1 (23.Rb6 Rc8 24.Qd5 Nd7+–) 23...Nd7 24.Rc6 Raa8? (24...Qe7+–) 25.Ng5 Re8 (25...Bf6 26.Nf7 Kg7 27.Nd8 Rd8+–) 26.Nf7 Kg8 27.Ne5 Kh8 28.Nd7 Qg8 29.Qb5 h5 (29...Qf7 30.Rc7 Re7+–) 30.Bc4 Kh7 (30...Qh7 31.Bf7 g5+–) 31.Bg8 Rg8 32.Rg6 Kg6 33.Rc6 Kh7 (33...Bf6 34.Rf6 Kh7 35.Qf5 Rg6 36.Rg6 b5 37.Qh5) 34.Qf5 Kh8 35.Qh5 Bh6 36.Qh6 1–0. pierred (2825) – vaingrecsky (2175), net–chess.com, 2016.

4.Nf3 Nc6 5.b5 Nb8 6.c4 c6 7.a4 d6 8.Qb3 Bg4 9.Be2 Nd7 10.h3 Be6 11.g4 (11.d4 d5+/–) 11...Nh6 12.Ng5 Bf7 13.Nf7 Nf7 14.h4 Nc5 15.Qc2 a6 16.g5 (better is 16.d4 Ne6 17.h5+=) 16...Ne5?? (16...ab5!? 17.cb5 Qa5+=) 17.f4?? (better is 17.d4+–) 17...Nf7+= 18.h5 gh5 19.Rh5 Kd7 20.Rh7+– Qg8 21.Bg4 Kc7 22.g6 Nh6 23.Bh3 e5 24.fe5 fe5 25.d4 ed4 26.Bd4 Rh7 27.b6 Kb6+= 28.gh7 Qh8 29.Qb2 Kc7 30.Ke2 Bd4–+ 31.Qd4 Qd4?? 32.ed4= Nb3 33.Ra3 Nd4 34.Kd3 Nhf5?? 35.Bf5+= Nf5 36.Ke4 Ne7 37.Rg3 Rh8 38.Rg7 Kd7 39.Nd2? d5?? 40.Ke5 Ke8?? 41.Kf6+– Kf8 42.Re7 dc4 43.Nc4 b5 44.ab5 ab5 45.Ne5 (45.Ne5 Rh7 46.Nd7 Kg8 47.Re8#; 45.Nd6 Rh7 46.Re8#) 1–0. Childs,Barry – Josse,Emanuelle, Hennebont Grand Prix, 2006.

4.Nf3 Nc6 5.b5 Ne5 6.d4 Nf3 7.Qf3 Nh6 8.Bc4 e6 9.d5 0–0 10.0–0 Kh8 (10...Nf7!?+=) 11.de6+– de6 12.Rd1 Qe7 (12...Qe8!?+–) 13.Ba3+– Bd7?? (better 13...Qf7+–) 14.Be7 (14.Be7 Rf7 15.Rd7+–) 1–0. DEFFM – GuestVLCQ, freechess.org, 2019.

4.h3 b6 5.Nf3 Bb7 6.Bd3 Nc6+= 7.b5 Na5 (7...Ne5 8.Ne5 fe5 9.0–0+=) 8.e4 (8.Nc3 e5+=) 8...e5+= 9.0–0 Ne7 10.c4 a6 11.a4 0–0 12.Qc2 Bc8 13.Be2 Nb7 14.d4 White plans c5 14...ed4 15.Bd4 a5 16.c5 c6? (better 16...bc5 17.Bc5 Nc5 18.Qc5 f5+–) 17.cb6+– f5 (17...c5 18.Bc5 Nc5 19.Qc5+–) 18.Bg7 Kg7 19.Qb2 Kg8 (19...Rf6 20.Ng5 Qb6 21.Nh7 cb5 22.Nf6 Qf6+–) 20.bc6 Nd6 (20...fe4 21.c7 Qe8 22.Ne5+–) 21.c7 Qe8 22.Rd1 Nb7 (22...Ne4 23.Bc4 Rf7 24.Bf7 Qf7 25.Rd7 Bd7 26.b7+–) 23.Ng5 Nc6 (23...d5 24.Rd5 Qc6+–) 24.Bc4 d5 25.Bd5 (25.Bd5 Rf7 26.Qf6+–) 1–0. Marekt – Catelio, gameknot.com, 2019.

4.h4 d5 5.h5 =+.

4.h4 h5 5.g4 (5.Nf3 Nc6=) 5...b6 (5...hg4 6.Qg4 Rh6 7.Qg2=) 6.g5 (6.Bd3 Rh6=) 6...Bb7 7.Rh2 (7.Nf3 Nc6 8.Bd3 Kf7 9.gf6 Bf6 10.Bf6 ef6=) 7...Na6 (7...a5 8.b5=) 8.a3 (8.Bg2 Bg2 9.Rg2 Nb4 10.gf6 Bf6 11.Bf6 ef6=) 8...e5 (8...e6 9.Bd3 Kf7 10.Nf3+=) 9.Bd3 (9.gf6 Bf6 10.e4 Nb8=) 9...Ne7 (9...e4 10.Be2=) 10.gf6 Bf6 11.Ba6 (11.Nf3 d6=) 11...Ba6 12.Qf3 (12.Nf3 d6=+) 12...Bg7 (better is 12...Nf5–/+) 13.Nh3? (13.Qg3 d6=+) 13...Nf5?? (better is 13...e4 14.Bg7 ef3 15.Bh8 Nf5–+) 14.Ng5=+ Rb8 15.e4= Bb7 16.Qb3 Qe7? 17.ef5+– gf5 18.d3 d5 19.Nd2 c6 20.0–0–0 f4 21.Re1 0–0 22.Ndf3 Kh8 23.Ne5 Qd6 24.Nef7 Rf7 25.Nf7 Kg8 26.Nd6 Ba6 27.Rg2 Kf8 28.Bg7 Kg8 29.Bf6 Kh7 30.Qc3 Bd3 31.Re7 Kh6 32.Qd3 d4 (33.Rg6; 32...Re8 33.Rg6) 1–0. xtrachess – landrover, Live Game Caissa's Web, 2006.

4.a3 e5

5.c4 d6 6.Nc3 c6 (6...f5 7.d4=) 7.d3 Ne7 8.Nf3 Bg4 9.Be2 Bf3 (9...0–0 10.d4+=) 10.Bf3 (worse 10.gf3 f5=) 10...0–0 11.0–0 f5 12.d4 e4 13.Be2 f4 (better 13...c5!?+=) 14.Ne4+– fe3 15.fe3 Nf5 16.Qd2 (16.Qd3 d5 17.cd5 cd5+–) 16...Na6 (16...Re8 17.Bf3 d5 18.cd5 cd5+–) 17.Rae1 Re8 (17...Qe7 18.Bd3+–) 18.Bf3 (better 18.Bd3+–) 18...c5? (better 18...d5!? 19.cd5 cd5+–) 19.dc5 dc5 20.Bg7 Qd2 21.Nd2 Kg7 22.b5 Nc7 23.Bb7 Rab8 24.Bc6 Re3 (24...Re5 25.Ne4+–) 25.Re3 Ne3 26.Re1 Nf5 27.Ne4 (27.g4 Rg8+–) 27...a6?! (27...Nd4 28.Nc5 Nc6 29.bc6+–) 28.a4 (better 28.Nc5!? ab5 29.cb5 Kh6+–) 28...ab5 29.ab5 Ne6 30.Nd6?? (30.Bd7 Nfd4+–) 30...Ned4? (better 30...Nd6 31.Re6 Nc4+=) 31.Nf5+– gf5 32.Re5 Kf6 (32...Nc6 33.bc6 Kf6 34.Rc5+–) 33.Rc5 f4 (33...Nb3 34.Rd5 Na5 35.Rd7 Nc4 36.Rh7+–) 34.Rd5 (34.Be4 h6+–) 34...Nf5 (34...Nc6 35.Rd6 Kf5 36.Rc6+– (36.bc6?! Rc8+–)) 35.c5 Rg8 (35...Ne7 36.Rd6 Ke5 37.Bd7+–) 36.b6 f3 (36...Ke6 37.Kf2+–) 37.g3 Ne7 (37...h6 38.Kf2 Rb8 39.Kf3+–) 38.Rd6 Ke5 39.Bf3 Rf8 (39...Nf5 40.Rd5 Kf6 41.c6+–) 40.Kg2 (40.b7 Rb8+–) 40...Nc8 (40...Nf5 41.Rd3 Nd4 42.Re3 Kf6 43.c6+–) 41.Rd5 Ke6 (41...Kf6 42.b7 Na7 43.Rd6 Ke7 44.Ra6+–) 42.b7 Na7 (42...Ne7 43.Rd6 Ke5 44.Ra6+–) 43.Rd6 Ke7 44.Ra6 Nb5 (44...Rb8 45.Ra7 Kd8 46.Ra6 Rb7 47.Bb7+–) 45.Ra8 Rf5 46.b8Q Rc5 (46...Rf3 47.Qe8 Kf6 48.Ra6 Nd6 49.Rd6 Kg7 50.Qe7 Rf7 51.Qg5 Kh8 52.Rd8 Rf8 53.Rf8) 47.Qf8 Ke6 (47...Kd7 48.Qg7 Ke6 49.Re8 Kf5 50.Be4) 48.Qc5 (48.Re8 Kd7 49.Qe7) 48...Nd6 49.Ra6 h5 (49...Kf7 50.Qd6 Kg8 51.Bd5 Kg7 52.Qf6) 50.Rd6 Kf7 51.Qc7 (51.Qc7 Ke8 52.Rd8) 1–0. Fournier,Frederic (2065) – TERESAJLD (1885), Echecs21, 2003.

5.Nf3 c6 6.d3 d5 7.c4 (7.Be2 Ne7=) 7...Ne7 (7...dc4 8.dc4 Qd1 9.Kd1=) 8.cd5 Nd5 9.Nc3 Nc3 10.Bc3 Nd7 (10...Be6 11.Be2=) 11.Be2 Bf8 (11...Nb6 12.e4=) 12.Qb3 (12.d4 Qe7+=) 12...Bd6 13.0–0 f5 14.h3 Nf6? (better 14...Qe7!?+=) 15.Ne5 Qe7 16.d4 (16.Nc4!? Bc7+–) 16...Be6+– 17.Bc4 Ne4 (17...Nd5!?+–) 18.Be6+– Be5 19.de5 (better 19.Bf5 gf5 20.de5+–) 19...Rd8?? (better 19...Nc3 20.Qc3 Qe6+–) 20.Bc4 b5 21.Be2 c5 (21...Nd2 22.Bd2 Rd2 23.Bf3 Qe5 24.Bc6 Ke7 25.a4+–) 22.Bf3 (better 22.Bb5 Kf8+–) 22...c4 23.Qc2 0–0 (23...Nc3 24.Bc6 Kf8 25.Qc3+–) 24.Be4 fe4 25.Rad1 (25.Qe4 Qe6+–) 25...Rde8 (25...Rd3 26.a4+–) 26.Qe4 a5 (26...Qe6 27.Qd5 a6 28.f4+–) 27.Qd5 Rf7 28.Qb5 ab4 29.Bb4 Qe5 (29...Qe6+–) 30.Qe5 Re5 31.Rd8 Rf8 32.Rf8 Kg7 33.Rc1 Rf5 34.Rf5 gf5 35.Rc4 (35.a4 f4+–) 35...Kg6 36.a4 Kh5 37.a5 (37.Rc6 Kg5 38.f4 Kh5 39.Bf8 Kh4 40.Kf2 h6 41.Rh6) 37...h6 38.a6 Kg5 (38...Kg6 39.a7 f4 40.a8Q Kh7 41.Qb7 Kg6 42.Rc6 Kf5 43.Qb5 Ke4 44.Re6) 39.a7 Kf6 (39...f4 40.a8Q fe3 41.Qg8 Kf6 42.Rf4 Ke5 43.Qb8 Kd5 44.Qd6) 40.a8Q Ke5 (40...f4 41.Qa6 Kf5 42.Rc5 Ke4 43.Qc4) 41.Rc5 (41.Qc6 f4 42.Rc5) 41...Kd6 (41...Ke6 42.Qa6 Kf7 43.Rc7 Ke8 44.Qc8) 42.Qa6 (42.Qc8 f4 43.Rb5) 42...Kd7 (42...Ke7 43.Rc7 Ke8 44.Qc8) 43.Rb5 (43.Qc8 Kd6 44.Rf5) 43...Kc7 (43...h5 44.Qd6 Ke8 45.Qe7) 44.Rb7 Kc8 (44...Kd8 45.Qa8) 45.Qa8 1–0. Fournier,Frederic – trancadis, Active, 2007.

5.Nf3 Ne7 6.d3 0–0 7.Be2 d5 8.c4 c6 9.Nbd2 Nd7 10.0–0 dc4 (10...a5 11.Qc2=) 11.dc4+= c5 12.b5 b6 13.a4 a5 (13...a6 14.Ne4+=) 14.Qc2 (14.Ne4 h6+=) 14...f5 15.Rfd1 e4? (better 15...Qc7+=) 16.Ng5+– Ne5 17.Nde4 Qc7 18.Ng3 (18.Nd6 h6 19.Nf3 Nf7 20.Bg7 Kg7 21.Qc3 Kh7 22.Nf7 Rf7+–) 18...f4 19.ef4 Rf4 20.Nf3 (20.Qc1 Rf8+–) 20...Bg4 (20...Be6!?+–) 21.Ne5+– Be2?? (21...Be5 22.Be5 Qe5 23.Bg4 Rg4+–) 22.Qe2 (better 22.Rd7 Be5 23.Rc7 (23.Ne2?! Qd7 24.Be5 Rf7=+) 23...Bc7 24.Qc3+–) 22...Be5 (22...Re8 23.Rd7 Qc8+–) 23.Be5 Qd8 (23...Rf2 24.Bc7 Re2 25.Ne2 Re8+–) 24.Rd8 (24.Rd8 Kf7 25.Ra8 h6 26.Bd6 Re4 27.Qe4 Nc8 28.Rc8 g5 29.Qf5 Kg7 30.Be5) 1–0. Fournier,Frederic (1905) – gilb (1645), Active, 2005.

5.Nf3 Ne7 6.d3 d6 7.c4 0–0 (7...a5 8.Be2=) 8.Be2 Nd7 9.Nbd2 b6 (9...f5 10.0–0=) 10.0–0+= Bb7 11.Qc2 Rb8 12.Rab1 Bf3 (12...a6 13.d4+=) 13.Nf3 (13.gf3?! f5=) 13...c6 14.e4 Rc8 15.Rbc1 d5 (15...c5 16.b5+=) 16.cd5+– cd5 17.Qd2 (17.Qb3 Rc1 18.Rc1 Qb8+–) 17...Rc1 18.Rc1 de4 (better 18...d4!?+=) 19.de4+– f5? (19...Nb8!?+–) 20.ef5 (better 20.Rd1!? fe4 21.Ng5 Nc6 22.Bc4 Kh8+–) 20...Nf5 21.Rd1 Re8 (21...Nd4 22.Nd4 ed4 23.Bd4+–) 22.Bf1 (better 22.Bc4!? Kh8 23.Qd7 Nd4+–) 22...Re7 (22...Nd4+–) 23.h3?? (better 23.Qd5!? Kh8 24.Bb5 e4 25.Bg7 Kg7+–) 23...e4 (23...Qf8 24.Bd3+–) 24.Bg7 (better 24.Ng5 Qf8 25.Bc4 Kh8 26.Ne6+–) 24...ef3?? (better 24...Kg7 25.Nd4 Qc7 26.Nf5 gf5 27.Qg5 Kf7 28.Qf5 Nf6+–) 25.Bf6!! Kf7 (25...Nf6 26.Qc3 Double attack (26.Qd8 Pinning; 26.Qd8 Deflection; 26.Bc4 Decoy)) 26.Be7 Ne7 (26...Qe7 27.Qd7 fg2 28.Bg2+–) 27.Qd7 Qd7 28.Rd7 Ke6 (28...fg2 29.Bc4 Kf6 30.Ra7+–) 29.Ra7 Nf5 (29...Nd5 30.Rh7 Ke5 31.Rf7+–) 30.Ra6 fg2 (30...Ke5 31.Rb6 Ne7 32.Rb7+–) 31.Rb6 Ke5 32.Bg2 Nd4 33.a4 Ne2 34.Kf1 Nd4 35.a5 Nb3 (35...Nb3+–) 0–1. Fournier,Frederic – Fc Liria berlin, Partie evaluee, 1m + 0s, 2008.

5.Nf3 Ne7 6.d4 e4 7.Nfd2=.

5.Nf3 Ne7 6.Be2 d5=.

4.b5 e5

5.c4 d5 6.Nc3 c6 (6...d4 7.ed4 ed4 8.Nd5=) 7.a4 (7.bc6 bc6 8.cd5 cd5 9.Qa4 Bd7+=) 7...Be6 8.cd5 cd5 9.Nf3 Nd7 10.Be2 e4 (10...Ne7!?=) 11.Nd4+= Bf7 12.Qb3 (12.a5 Ne7+=) 12...f5 13.0–0 (13.Nd5? Ne5–+) 13...Ne7 14.Rac1 Rc8 15.Rc2 Nc5 16.Qa3 (better 16.Qb4+=) 16...Qa5? (16...Bd4!? 17.ed4 Ne6=) 17.Rfc1 (17.Na2!? Qa4 18.Rc5 Qa3 19.Ba3 Kd7+–) 17...0–0+– 18.Nd1 Na4 (18...Nd3 19.Bd3 (worse 19.Qe7 Nc1 20.Rc1 Rc1 21.Bc1 Bd4 22.ed4 Qa4+–) 19...ed3 20.Rc8 Nc8 21.Nb3+–) 19.Qe7 (19.Nb3!? Bb2 20.Nb2 Qd8 21.Na4 Rc2 22.Rc2 Nc8+–) 19...Rc2 20.Rc2 Nb2 21.Rb2 Qa1? (21...Qb6 22.Rc2+–) 22.Qb4 (22.Qb7 Bd4 23.ed4 Qa4+–) 22...Rc8 (22...Bd4 23.Qd4 Be6 24.b6+–) 23.Rb1 (better 23.Nb3 Qd1 24.Bd1 Bb2 25.Qe7+–) 23...Qa2 24.Qb2 Qa5 (24...Qb2 25.Rb2 (25.Nb2?! Bd4 26.ed4 Rc2+–) 25...Bf6 26.Rc2 Rc2 27.Nc2+–) 25.Ra1 Qb6 26.Qa3 Bd4 27.ed4 Qd4 28.Qa7 Qd2 (28...Qa7!? 29.Ra7 d4+–) 29.Qb7 Be6?? (29...Rf8 30.Bf1 d4+–) 30.Ra7 Qh6 31.Qe7 (31.Qe7 g5 32.b6+–) 1–0. AhmedSultanov (1850) – vikasmccg (1795), lichess.org, 2019.

5.d4 Qe7 6.de5 (6.Nf3 a6 7.ba6 Na6+=) 6...fe5= 7.Nf3 e4 (7...d6 8.Nc3=) 8.Bg7 Qg7 9.Qd4 Nf6 (9...Qd4 10.Nd4 (10.ed4? ef3 11.g3 b6–+) 10...Nf6 11.Nc3=) 10.Ng5 (better 10.Nfd2 d5 11.c4+=) 10...Nh5?? (better 10...d5 11.Nc3 c6 12.bc6 Nc6=+) 11.Qg7+– Ng7 12.Nc3 a6? (better 12...c6 13.Nce4 Ke7+–) 13.Nd5 (13.Nge4?! ab5 14.Nd5 Ne6+–; 13.Nce4?! Kf8+–) 13...Ne6 (13...h6 14.Nc7 Kd8 15.Na8 hg5+–) 14.Ne6 de6 15.Nc7 (15.Nc7 Ke7 16.Na8+–) 1–0. Anonymous – Anonymous, lichess.org, 2020.

5.d4 Ne7 6.de5 fe5 7.Nf3 d6 8.Bc4 Bg4 (8...a6 9.a4+=) 9.e4 (9.Bf7 Kf7 10.Ng5 Kf6 11.Qg4 Qd7 12.Ne4 Kf7 13.Qf3 Qf5 14.Ng5 Kf6 15.Qb7 Kg5 16.f4 Kh6 (16...ef4? 17.Bg7 Nbc6 18.0–0+–) 17.Qa8 Nbc6+=) 9...Nd7 (9...a6 10.Nc3+=) 10.0–0 Nb6 11.Bf7 Kf7 12.Ng5 Kf6?? (better 12...Ke8 13.Qg4 Qc8+=) 13.Qg4+– Qd7 14.Qf3 Nf5 15.ef5 Kg5 (15...Qf5 16.Ne4 Ke7+–) 16.f6 Rhf8 (16...Qf5 17.fg7 Qf3 18.gh8Q Qf7 (18...Rh8?? 19.gf3 Na4 20.Ba3+–) 19.f4 Kh5 20.Qa8 Na8 21.fe5 Qe7 22.ed6 cd6+–) 17.Bc1 Kh4 18.Qg3 Kh5 19.Qg5 1–0. guest737 – abrantes, chessclub.com, 2019.

5.d4 Ne7 6.Nf3 d6 7.d5 (7.Bd3 Bg4+=) 7...0–0 8.e4 (8.Be2 a6=) 8...a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 b6 (11...f5 12.Nc3=+) 12.Na3 (12.Nc3 f5=) 12...Nd7 13.c4 (13.Bc4 Nc5 14.Qe2 f5 15.Ne5 Ne4=+) 13...Nc5=+ 14.Nc2 Ne4 15.Be2 Nc5 16.Nb4 f5 17.h4 (17.0–0 f4=+) 17...e4 18.Ng5 (18.Nd4 f4–/+) 18...h6 (18...Ba1 19.Qa1 h6 20.Nh3–/+) 19.Nh3 1–0. AhmedSultanov – john6737, lichess.org, 2019.

5.Nf3 d5 6.c4 Ne7 7.cd5 Nd5 8.Bc4 Nb6 9.Bb3 Qd3 10.a4 Bg4 11.Bc2 Qd5 (11...Qd7 12.h3 Nc4 13.hg4 Nb2 14.Qc1 Qg4 A) worse 15.Qb2 Qg2 16.Rh4 g5= (16...Qf3?? 17.Be4 Qe4 18.Re4+–); B) 15.Rh4 Qg2 16.Ke2+=) 12.Nc3 Bf3 (12...Qd8!?=) 13.Nd5+= (worse 13.Qf3 Qf3 14.gf3 Nc4=) 13...Bd1 14.Nc7 (better 14.Nb6!? ab6 15.Rd1+–) 14...Kd7= 15.Na8 Bc2 16.Nb6 ab6 17.0–0 Bf8 (17...Bd3 18.Rfc1=+) 18.Rfc1 Be4 (18...Bd3!?=) 19.d4+= ed4 20.Bd4 (20.ed4?! f5=) 20...Ke6? (20...Be7 21.Bb6 Bd6 22.Rc4+–) 21.Bb6 (better 21.f3!? Bd6 22.fe4+–) 21...Bd6+– 22.Rc4 (better 22.f3!? Bd5 23.a5+–) 22...Bd5= 23.Rc2 Nd7 24.Bd4 Be5 (24...Be4!? 25.Rd2 Bb4+=) 25.Be5 Ne5 26.a5 Nc4?? (26...Ra8 27.a6+–) 27.a6 (better 27.e4 Be4 28.Rc4+–) 27...ba6+– 28.ba6 Ra8?? (28...f5 29.a7 Ra8 30.Rcc1+–) 29.Kf1 (better 29.e4 Be4 30.Rc4+–) 29...Ra7 30.Ke2 (30.e4!? Bc6 31.Rac1+–) 30...Ne5 (30...Nd6 31.Ke1=) 31.f3 (31.f4!? Nc6 32.Rb2=) 31...Bc4=+ 32.Kd2 Ra6 33.Ra6 Ba6 34.f4 (34.Kc3!?=+) 34...Nc4–/+ 35.Kc3 (35.Ke1 f5–/+) 35...Kd5 (35...Ne3!? 36.Ra2 Bf1–+) 36.Ra2–/+ Bc8 (36...Bb5 37.Kb4 Bc6 38.Re2–/+) 37.Ra5?? (better 37.e4 Ke4 38.Ra4–/+) 37…Na5–+ 0–1. AhmedSultanov (1745) – Dmalekseev67 (1745), lichess.org, 2020.

5.Nf3 Ne7 6.c4 0–0 7.Nc3 c6 8.d4 e4 (8...d6 9.Be2+=) 9.Nd2 (9.Ne4 d5 10.Nc3 Be6+–) 9...d5 (9...f5 10.Qb3+=) 10.Qb3 Be6 (10...f5 11.Ba3 dc4 12.Bc4 Kh8 13.0–0+=) 11.cd5 cd5 12.a4 (12.Nde4 Bf7 13.Nc5 b6+–) 12...b6 (12...Qd7 13.Ba3 Rc8 14.Be2+=) 13.Be2 (13.Nde4 Qd7 14.Nd2 f5+–) 13...Nd7? (13...f5 14.0–0+=) 14.0–0 (better 14.Nde4!? h6 15.Ba3+–) 14...f5+= 15.Ba3 Nf6 16.h3 (16.Rfc1 Rf7+–) 16...Re8 17.f3 (17.Rac1 f4+=) 17...ef3 18.Bf3 (worse 18.gf3 f4 19.e4 Nd7–+) 18...Kh8 (18...Qd7 19.Rac1=) 19.Be2 (19.Rac1 Qd7+=) 19...Ne4 (19...Rc8 20.Rac1=) 20.Nde4 fe4 21.Nd1 (21.Bg4!? Nf5 22.Bf5 gf5 23.Ne2+=) 21...Nf5=+ 22.Nf2 (22.Rf2 Ng3=+) 22...Qh4 (22...Qg5 23.Nd1–/+) 23.Nh1 (23.Bg4!?=) 23...Bh6 (better 23...Nd4 24.ed4 Bd4 25.Nf2 e3=+) 24.Bg4? (better 24.Bc1=+) 24...Ne3 (24...Be3 25.Kh2 Bd4 26.Bb2–+) 25.g3 Qe7?? (better 25...Qd8 26.Be6 Nf1 27.Bd5 Nd2–+) 26.Be7+– Re7 (26...Ng4 27.Bb4 a5 28.Ba3+–) 27.Rf2 (better 27.Be6!? Re6 28.Rf7 Nc4+–) 27...Bg4 28.hg4 Ng4 (28...Nc4 29.Re1+–) 29.Re2 (better 29.Qd5!? Rc8 30.Re2 Ne3+–) 29...Rd8 30.Nf2 Nf6 (30...Nf2 31.Rf2 Bg7 32.Qc3+–) 31.Nd3! e3 (31...ed3 32.Re7 Pinning (32.Re7 Deflection)) 32.Ne5 Ne4 (32...Rc8 33.Rf1 Kg7 34.Qa3+–) 33.Ng4 (better 33.Nc6 Ree8 34.Nd8 Rd8 35.Kg2+–) 33...Ng3 34.Ne3?? (better 34.Rg2 Bf4 35.Rg3 Bg3 36.Ne3+–) 34...Ne2–+ 35.Kf2 Nd4 36.Qc3 Be3 37.Kf1 (37.Kg2 Kg8–+) 37...Rf8 38.Kg2 Rf2 39.Kg3 Rf3 (better 39...Rc2!? 40.Qd3 Bf2 41.Kg2–+) 40.Kg2 Ref7 41.Re1 (41.Rd1 Rf2 42.Kh1 R7f3 43.Rd4 Rh3 44.Kg1 Ra2 45.Qe3 Re3–+) 41...Rf2 (better 41...Bf2 42.Qc8 Rf8–+) 42.Kg3 (42.Kh1 Rf1 43.Rf1 Rf1 44.Kg2 Rf2 45.Kh1–+) 42...R7f3 43.Kg4 (43.Kh4 Rh2 44.Kg4 h5) 43...Rg2 44.Kh4 Bf2 0–1. AhmedSultanov (1755) – BORIS_KACARSKII (1725), lichess.org, 2019.

5.Nf3 Ne7 6.Bc4 d5 7.Bb3 0–0 (7...a6 8.a4=) 8.0–0 (8.Ba3 c6=) 8...Bg4 (8...c5 9.bc6 Nbc6 10.e4=) 9.h3 (9.Ba3 c6 10.e4 Rf7+=) 9...Bf3 (9...Be6 10.Nc3=) 10.Qf3 c6 (10...f5 11.Nc3 e4 12.Qg3+=) 11.a4 (11.e4 f5= (worse 11...cb5 12.Nc3+–)) 11...c5 (11...f5 12.d4=) 12.c4+= e4 13.Qf4 g5 (13...f5 14.Bg7 Kg7 15.f3+=) 14.Qg4+– Kh8 (14...f5 15.Qg5 d4 16.a5+–) 15.Qe6 (better 15.cd5!? Qd6 16.Qe4+–) 15...f5+– 16.Bg7 Kg7 17.cd5 Rf6 18.Qe5 Nd7 (18...Qd6 19.f4+–) 19.Qc3 Kg6 (19...Nb6 20.Qc5 Nbd5 21.f3+–) 20.Na3 (20.d3 ed3 21.Qd3 Rc8+–) 20...b6 (20...Rd6 21.d3 Nd5 22.Bd5 Rd5 23.de4 fe4 24.Qc4+=) 21.d4 (21.d3 Rd6+–) 21...Rc8 22.a5 (22.Qb2 cd4 23.Qd4 Rd6+–) 22...h5 (22...ba5 23.Qb2+=) 23.Nc2 (23.f3 ef3 24.Rf3 ba5+–) 23...Rd6 24.ab6 ab6 25.Ra6 (25.Bc4 Nd5 26.Qb3 N7f6+–) 25...Nd5 (better 25...cd4!? 26.Qb4 Nc5 27.Nd4 Na6 28.ba6 Nd5 29.Bd5 Rd5=+) 26.Bd5+= Rd5 27.dc5?? (better 27.Qb2+=) 27...Rdc5–+ (27...Nc5?! 28.Ra7 Rd7 29.Rd7 Qd7 30.Nd4+=) 28.Qb3 Rc2 29.Qe6 Kg7 30.Qf5 R2c4 (30...Qe7 31.Ra4 R8c5 32.Re4–+) 31.Rd1 (31.Ra7!? R8c7 32.Rc7 Rc7 33.Qe4–/+) 31...Rc1–+ 32.Ra1 Ra1 33.Ra1 Nc5?? (better 33...Qe7 34.Rd1 Rd8–+) 34.Ra7+– Rc7 35.Qe5 Kg8 (35...Kg6 36.Rc7 g4 37.Rc6 Kf7 38.Qh5 Ke7 39.Qe5 Kf7 40.Rc7 Nd7+–) 36.Rc7 (36.Rc7 Qc7 37.Qc7+–) 1–0. baqua – pall, Live Game Caissa's Web, 2004.

5.Nf3 Ne7 6.d4 e4 7.Nfd2 d5=.

4.c4 d6

5.b5 c6 6.a4 (6.d4 e5=) 6...e5= 7.Nf3 Be6 (7...Bg4 8.h3 Be6 9.Be2=) 8.d4 e4 9.d5 (better 9.Nfd2 f5 10.Be2+=) 9...Bf7 (9...ef3 10.de6 fg2 11.Bg2 Nh6+=) 10.Ng5!+– cd5? (10...fg5 11.Bg7 Pinning (11.Bg7 Deflection)) 11.Nf7+– Kf7 12.Qd5 Kf8 13.Ba3 (13.Ba3 f5 14.Qb7 Ba1 15.Qa8+–) 1–0. DEFFM – GuestBFDY, freechess.org, 2019.

5.b5 e5 6.d4=.

5.Nf3 e5 6.b5 b6 (6...a6!?=) 7.d4+= Nd7 8.Nc3 (8.Bd3 Bb7 9.d5 a6+=) 8...ed4 (8...a6 9.Be2+=) 9.Nd4+– Bb7? (better 9...Nc5+–) 10.Ne6+– (10.Ne6 Qc8 11.Nd5+–) 1–0. DEFFM – GuestPHNF, freechess.org, 2018.

5.Nf3 e5 6.Be2 Ne7 7.0–0 c6 8.d4 0–0 9.e4 (9.Nbd2 Nd7+=) 9...Bg4 10.Nbd2 Na6 11.a3 Nc7 12.de5 (12.Re1 ed4 13.Nd4 Be2 14.Ne2 f5 15.Bg7 Kg7+–) 12...de5 (12...fe5 13.c5 b5 14.a4+=) 13.h3 (13.Qb3 Qc8+=) 13...Bf3 (13...Be6 14.Nb3+=) 14.Nf3 (worse 14.gf3 Ne6–/+) 14...Ne6 15.Qb3 Qc7?? (15...c5 16.Rad1 Qb6 17.Rd7+=) 16.Rfd1 (better 16.c5!? Qc8 17.Bc4 Kh8 18.Be6 Qc7+–) 16...Rad8?? (better 16...c5+=) 17.c5+– Kf7 18.Bc4 Qc8 19.Rd8 (19.Be5 b5 (19...fe5?? 20.Ng5 Ke8 21.Be6+–) 20.cb6 ab6+–) 19...Rd8 20.Be5! fe5 (20...b5 21.cb6 ab6+–) 21.Ng5 (better 21.Be6 Kf6 22.Bc8 Nc8 23.Ne5 Ke5 24.Qf7+–) 21...Kf6 (21...Kf8 22.Ne6 Qe6 23.Be6+–) 22.Nh7 Kf7 23.Ng5 (23.Be6 Qe6 24.Ng5 Kf6 25.Qe6 Kg5 26.Qe7 Bf6 27.h4 Kh6 28.Qf6 Re8 29.Rd1 Re7 30.Qg5 Kg7 31.Qe7 Kh6 32.Rd7 Kh5 33.Qg5) 23...Kf6 24.Ne6 (24.Be6 Kg5 25.Bc8 Nc8+–) 24...Rh8 (24...Rd5 25.ed5 cd5 26.Qf3 Ke6 27.Bd5 Kd7 28.Qf7+–) 25.Qf3 Nf5 26.ef5 g5 27.g4 (better 27.Rd1 Rh4+–) 27...Re8 (27...Bh6+–) 28.Ng7 Kg7 29.Rd1 Rd8 30.Rd8 (30.f6 Kh6 31.Rd8 Qd8 32.Qf5 Qe8 33.f7 Qe7 34.f8Q Qf8 35.Qf8 Kg6 36.Bd3 e4 37.Be4) 30...Qd8 31.Qd3 Kf6 (31...Qd3 32.Bd3 Kf7+–) 32.Qd8 (32.Qd8 Kg7 33.Qg8 Kf6 34.Qf7) 1–0. aravind555 (1800) – smidasek (1755), lichess.org, 2020.

5.Nf3 e6 6.d4 c6 7.Bd3 b6 (7...Ne7 8.0–0+–) 8.a4 (8.Nc3 Ne7+–) 8...Bb7 9.0–0 Ne7 10.Qc2 (10.Nc3 Na6 11.Qb3 Qd7+–) 10...0–0 11.Nbd2 Nd7 (11...Na6 12.Qb3+–) 12.a5 ba5 (12...c5 13.ab6 ab6 14.Ra8 Qa8+–) 13.ba5 (13.Ra5 c5 14.Bc3 cb4 15.Bb4 Nc6+=) 13...a6 (13...c5!?+=) 14.Ne4+– Qc7 15.c5 d5 (15...dc5 16.Ba3+–) 16.Nd6 e5 17.e4 (better 17.de5 fe5 18.e4+–) 17...h6? (better 17...Rab8!?+–) 18.de5 (18.ed5!? cd5 19.Bg6 Rab8+–) 18...fe5 19.Ne5?? (19.ed5 cd5 20.Rae1+=) 19...Ne5 20.Be5 (20.Be2!? Rab8 21.f4–/+) 20...Be5–+ 21.Rab1 Bd6?? (better 21...Ra7–+) 22.cd6+– Qd6 23.Rb7 de4 (23...Rf7 24.Qb2+–) 24.Be4+– Rac8 (24...Qe6 25.Re1 Rf7 26.Qd2+–) 25.Rd1 (25.Rd1 Qf6 26.g3+–) 1–0. DEFFM – GuestQVDK, freechess.org, 2018.

5.Nf3 Bg4 6.Be2 Nh6 7.0–0 Nf5 (7...0–0 8.d4+=) 8.e4 Bf3 9.Bf3 Nh4 10.Bg4 Rg8 (10...e5!?+/–) 11.Be6 Rf8? (better is 11...f5 12.e5! Rf8+–) 12.g3 g5 (12...c5 13.gh4 cb4 14.d4+–) 13.d4 (better is 13.gh4 Qd7 14.Qh5 Kd8 15.Bd7 Nd7 16.Qh7+–) 13...Ng6 14.d5 Nd7 15.Nd2 (better is 15.Qh5 Rh8 16.f4+–) 15...Nde5? (15...c5 16.a3+–) 16.Nf3 (16.Be5 de5 17.Qa4 c6 18.dc6+–) 16...Nc4 17.Bc1 (17.Qe2 b5 18.Ng5 fg5 19.Bg7+–) 17...Nge5?? (better is 17...f5 18.Rb1 fe4 19.Ng5 Nce5+/–) 18.Nd4 (better is 18.Ne5 Ne5 19.Qh5 Nf7 20.Qh7+–) 18...Nd3?? (better is 18...g4 19.Bg4 Qb8+–) 19.Qd3 (19.Qh5 Rf7 20.Qf7) 19...Ne5+– 20.Qe2 Ng6 (20...g4 21.Bg4 f5 22.Bh5 Nf7+–) 21.Nf5 (better is 21.Qb5 c6 22.dc6+–) 21...Bh8 (21...Rh8 22.Ng7 Kf8+–) 22.Nh6 (22...c6 23.Nf5+–; better is 22.Qb5 c6 23.dc6+–) 1–0. TIROLOCO – Segato, Live Game Caissa's Web, 2004.

4.c4 e5

5.b5 a6 6.d4=.

5.b5 c6 6.a4 (6.d4 d6+=) 6...cb5 (6...d5 7.d4=) 7.ab5+= Qb6 (7...d5!?+=) 8.Nc3+– a6?? (8...Ne7 9.c5! Qd8 10.b6+–) 9.Nf3 (better 9.Nd5!? Qd8 10.b6 d6 11.Nc7 Kf7+–) 9...d5?? (better 9...Qd8+–) 10.Nd5+– Qc5 (10...Qd6 11.Ba3 Qd8+–) 11.Ba3 Qa7 (11...Qd5 12.cd5 Bg4+–) 12.b6 Qb6 13.Nb6 Ra7 14.Nc8 Kd8 15.Nb6 (better 15.Na7 Nd7+–) 15...Kc7 16.c5 (better 16.Qb3 Ne7 17.Be7 Rd8+–) 16...a5 17.Qa4 (better 17.Qb3 Nh6 18.Nd5 Kd7+–) 17...Nc6 18.d4 ed4 19.Nd4 Nd4 20.Qd4 (20.Qd7 Kb8 21.Qd6) 20...Ne7 (20...Bf8 21.Qd7 Kb8 22.Qc8) 21.Qd7 (21.Qd6) 21...Kb8 22.Qd6 1–0. GuestVLLC – GuestMDHT, freechess.org, 2016.

5.b5 d5 6.cd5 Qd5 (6...Ne7!?+=) 7.Nc3+– Qd8 8.Bc4 Ne7 (8...Nd7 9.Nge2+–) 9.Nf3+– Nd7 10.0–0 (10.d4 Nb6 11.Bb3 a5 12.ba6 Ra6+–) 10...Nb6+– 11.Bb3 a5 (11...Qd3!?+–) 12.a4+– Nd7? (better 12...Qd3 13.Ne1 Qd7+–) 13.d4 e4 (13...g5 14.Qc2+–) 14.Ne4 b6 (14...Nb6 15.Nc5 f5 16.Be6+–) 15.Qc2 Bb7 16.Ba3 Be4 (16...h6+–) 17.Qe4 Bf8 (17...f5 18.Qe6 Rf8 19.Rfe1+–) 18.Qe6 Bg7 (18...Qb8+–) 19.Qf7 1–0. GuestQBXK – GuestMGHN, freechess.org, 2019.

5.Nc3 Ne7 6.e4 c6 (6...0–0 7.Nf3=) 7.c5 (7.Nf3 Na6+=) 7...d6 8.Bc4 d5 9.ed5 (9.Bb3 a5 10.a3 Be6=) 9...cd5=+ 10.Qa4 (10.Bb3 Nbc6 11.a3 Be6=+) 10...Bd7–/+ 11.Bb5 a6 12.Bd7 Qd7 13.Nge2 Nbc6 14.0–0 0–0 15.d3 Nf5 Black plans d4 16.Rad1 d4 17.Ne4 Nh4 (17...Qd5 18.g3=+) 18.f4 (18.Qb3 Qf7 19.Qf7 Rf7=) 18...Qg4 (18...Nf5 19.Rde1=) 19.N4g3 (19.Qb3 Kh8 20.N2g3 Rae8+–) 19...Nf5 (19...Qe6 20.fe5 fe5 21.Bc1=) 20.fe5 (20.h3!? Qh4 21.Nf5 gf5 22.Rf3+–) 20...fe5+= 21.Bc1 (21.h3!? Qh4 22.Nf5 gf5 23.Rf3=) 21...Ne3=+ 22.Rf8 (22.Qb3 Kh8 23.h3 Qd7 24.Be3 de3=+) 22...Rf8 23.Be3 de3 24.a3 Nd4 25.Re1 h5 26.Nd4 ed4 27.Qb3 Kh7 28.Qd5 (28.Ne4 Be5 29.Qd1 Qf5–/+) 28...h4 (better 28...Qf4!? 29.Qf3 Qf3 30.gf3 Rf3–+) 29.Ne4=+ Qf4 30.Qb7?? (better 30.g3 Qf5 31.Qf5 (31.Qb7 e2 32.Ng5 Qg5–+) 31...gf5 32.Ng5 Kg6 33.gh4=+) 30...e2!–+ 31.h3 (31.Re2 Qf1 Mate attack) 31...Qf1 32.Rf1 ef1Q 33.Kh2 Kh6 34.Qa6 Be5 35.g3 Qe2 (35...hg3 36.Ng3 Rf2) 36.Kg1 (36.Nf2 Rf2 37.Kh1 Qd1) 36…Rf1 0–1. dbinc007 – sokkman, gameknot.com, 2017.

5.Nc3 Ne7 6.Nf3 0–0 7.Qc2 (7.h4 h5+–) 7...b6 (better 7...d6!?=) 8.h4+– Bb7 9.Be2 Nbc6 10.h5 (10.b5!? Nb4 11.Qb3+–) 10...Nb4= 11.Qb1 (11.Qb3 c5 12.a3 Nbc6=) 11...g5 (11...Re8!?=) 12.a3+= Nbc6 13.Bd3 (13.h6 Bh8+=) 13...f5 (13...h6 14.Nd5–/+) 14.Ng5 (14.h6 Bf6 15.Bf5 Nf5 16.Qf5 Na5+=) 14...e4 (better 14...h6 15.Nh3 Na5=+) 15.Be4?? (better 15.Nce4 Bb2 16.Qb2 fe4 17.Be4+–) 15...fe4–/+ 16.Qe4? (16.Nce4 Bb2 17.Qb2–+) 16...Nf5 (better 16...Rf5 17.Nf3 Ne5–+) 17.Qd5–/+ Kh8 18.Nf7? (better 18.h6 Nh6 19.Nce4–+) 18...Rf7!–+ 19.Qf7 Nh6 (19...Nd6 20.Qf4 Ne5 21.Ke2 Ndc4 22.Na4 Nb2 23.Nb2 Bg2 24.h6–+) 20.Qf4? (20.Qd5 Qe7–/+) 20...d6 (better 20...Ne5!? 21.Ke2 Bg2–+) 21.0–0–0–/+ Ne5 22.d3 Neg4 (better 22...Qd7 23.e4 Rf8=+) 23.d4? (23.Qg3 Qg5 24.f4 Qc5–/+) 23...Qf6?? (better 23...Qg8!? 24.Rd2 Rf8–+) 24.Rd2 (24.Qf6 Bf6 25.Rd2 Bg2=+) 24...Qf4 25.ef4 Nf5 (better 25...Rf8–/+) 26.f3?? (better 26.d5=) 26...Nge3–+ 27.Re1 Re8?? (better 27...Nc4 28.Rde2 Rg8–+) 28.Rde2 Nd4?? (better 28...Bh6 29.d5 Bf4=) 29.Re3+– Nb3 (29...Rg8 30.h6! Bh6 31.Nb5+–) 30.Kc2 Nd4 31.Kb1 (31.Kd3 Re3 32.Re3 Kg8+–) 31...Rf8 (31...Re3 32.Re3 Kg8 33.Re7+–) 32.Re8 (better 32.Re7 Bc8 33.Rc7 Bf5 34.Ne4 Kg8+–) 32...Kg8 33.Rf8 (33.Nb5 Nb5 34.cb5 c5+–) 33...Kf8 (33...Bf8 34.Nd5 Nb3 35.Nf6 (worse 35.Nc7 Nd2 36.Kc1 Nc4+–) 35...Kg7 36.Re8 Nd2 37.Kc2 Nc4 38.Nd7 Nb2 39.h6 Kh6 40.Nf8+– (40.Rf8?! Nc4+–; 40.Kb2?! Bg7 41.Kc2 Kg6+–)) 34.Ne4 (better 34.Nb5!? c5 35.Nd6 Bc6 36.Bd4 cd4+–) 34...Ba6 (34...h6 35.Nc3 Ba6 36.Nb5 Nb5 37.Bg7 Kg7 38.cb5 Bb5 39.Re7 Kf8 40.Rc7+–) 35.Nd2 (35.h6 Bh8 36.Rd1 c5 37.Nd6 Bf6 38.Bd4 cd4+–) 35...Nf5 (35...Bh8 36.Re4 c5 37.Re1+–) 36.Bg7 Kg7 (36...Ng7 37.g4 Kf7+–) 37.g4 Nh4 (37...Nd4 38.Re7 Kg8 39.h6+–) 38.Re7 Kh6 (38...Kf8 39.Rc7 d5 40.cd5+–) 39.Rc7 (39.Ne4 Nf5 40.Rc7 Bc4 41.Nf6 Bd3 42.Kb2 Ne7 43.Re7 d5 44.g5) 39...Ng2+– 40.Ra7 Bc8 41.f5 Ne3 42.f6 Be6 43.f7 Kg7 44.Re7 (better 44.Ne4 h6 45.Re7 Bc4 46.Nd6 Bf7 47.Rf7 Kg8+–) 44...Ng4 (44...Nc4 45.Re6 Nd2 46.Kc2 Kf7 47.Rd6 Nc4 48.Rd7 Kg8+–) 45.fg4 (45.Re6 Kf7 46.Rd6 Ne5+–) 45...Bf7 (45...Bg4 46.h6 Kf8 47.Rc7+–) 46.Rf7! Kf7 47.Ne4 Ke7 48.g5 Ke6 49.Kc2 Ke5 50.Kd3 (better 50.Nd6 Kd6 51.g6 hg6+–) 50...Kf5 51.Kd4 Ke6 52.g6 h6 53.a4 Ke7 (53...b5 54.cb5 d5 55.Nc5 Kd6 56.g7 Ke7 57.g8Q Kf6 58.Kd5 Ke7 59.Ne6 Kd7 60.Qd8) 54.Kd5 Kf8 (54...Ke8 55.Kd6 Kf8 56.Ke6 b5 57.cb5 Kg8 58.b6 Kg7 59.b7 Kf8 60.Nd6 Kg8 61.b8Q Kg7 62.Nf5) 55.Kd6 Kg7 (55...Ke8 56.c5 bc5 57.Nc5 Kf8 58.Ke6 Kg8 59.a5 Kg7 60.a6 Kf8 61.a7 Kg7 62.Kf5 Kg8 63.a8Q Kg7 64.Ne6) 56.Ke6 (56.Ke7 Kg8 57.Kf6 Kf8 58.g7 Ke8 59.g8Q Kd7 60.Qh7 Kc6 61.Qa7 b5 62.ab5) 56...Kf8 57.c5 bc5 58.Nc5 Kg8 (58...Kg7 59.a5 Kg8 60.a6 Kf8 61.a7 Kg7 62.Ke5 Kg8 63.a8Q Kg7 64.Ne6) 59.a5 Kf8 (59...Kg7 60.a6 Kf8 61.a7 Kg7 62.Nd7 Kh8 63.a8Q Kg7 64.Qf8) 60.a6 (60.a6 Kg8 61.Kf6 Kf8 62.a7 Ke8 63.a8Q) 1–0. combijack (1770) – omar7860, gameknot.com, 2016.

5.Nc3 Ne7 6.Nf3 d6+=.

5.d4 ed4 6.Bd4 Nc6 7.Bc3 a5 (7...Qe7 8.c5=) 8.b5+= Ne5 9.f4 Nf7 10.Nf3 c6 (10...Qe7 11.Bd4+=) 11.a4 (11.Bd3 Ne7+=) 11...d5 (11...Ne7 12.Bd3+=) 12.cd5 Qd5 13.Qd5 cd5 14.Be2 (14.Nbd2 Ne7+=) 14...Bf5 (14...Ne7 15.Nbd2+=) 15.Nd4 Nd6 (15...Ne7 16.Nd2+=) 16.0–0 (16.Nf5 Nf5 17.Kf2 Nge7+=) 16...Ne7 17.Nd2 Rc8 (17...Kf7!?+=) 18.Ba5+– 0–0? (18...Be4!?+–) 19.g4 (19.Bb4 Rfd8+–) 19...Bd7? (better 19...Bc2+–) 20.Bb4 f5 (20...Nc4 21.Nc4 dc4 22.Be7+–) 21.Bd6 Bd4 (21...fg4 22.a5 Rc3 23.Kf2+–) 22.ed4 (22.Be7?! Be3 23.Kg2 Rfe8+=) 22...Rfe8 (22...fg4 23.a5+–) 23.Be7 (23.g5 Rc2 24.Rfd1 Kf7+–) 23...Re7 (23...fg4 24.Bg4! Bg4 25.Bb4+–) 24.Bf3 Rc2 (24...Be6 25.gf5 gf5 26.Rfc1 Rg7 27.Kf1+–) 25.Bd5 Be6 26.Be6 Re6 27.Rf2 (27.gf5 gf5 28.Rf2 Rc7+–) 27...fg4 28.Nb3 (28.a5 Rc7+–) 28...Rc3 (28...Rf2 29.Kf2 Rf6 30.Kg3+–) 29.Nc5 Ree3 (29...Re7 30.a5 g3+–) 30.d5 (better 30.Nb7 g3 31.hg3 Rg3 32.Rg2+–) 30...g3 (30...Rc5 31.Rd1+–) 31.hg3 (31.Nb7 gf2 32.Kf2 Red3+–) 31...Rg3 32.Rg2 Rgf3?? (32...Rg2 33.Kg2 Rc5 34.d6+–) 33.Rf1 (better 33.Nb7 Rc7 34.Nd8+–) 33...Rf1+– 34.Kf1 Rc5 35.Rd2 Rc4 (35...Kf8 36.d6 Ke8 37.Re2 Kd7 38.Re7 Kd6 39.Rb7+– (39.Rh7?! Rf5=)) 36.d6+– Rf4 37.Ke2 (better 37.Kg2 Rf8 38.a5+–) 37...Kf7?? (better 37...Re4 38.Kf3 Re8+–) 38.d7 Re4 39.Kd1 Ra4 40.d8Q Ra1 41.Ke2 Re1 1–0. GuestTCKV – GuestWMGY, freechess.org, 2017.

5.d4 d6 6.Nc3 c6 (6...ed4 7.ed4 Ne7 8.Nf3+=) 7.de5 de5 (7...fe5 8.Ne4 d5 9.cd5 cd5 10.Nc5=) 8.Ne4 Nd7 (8...Qd1 9.Rd1 Bf8 10.Nd6 Bd6 11.Rd6+=) 9.Nd6+– Kf8 10.c5 Ne7? (better 10...a5+–) 11.Qb3+– Nd5 12.e4 (12.Nc8?! Qc8 13.e4 Nc7+–) 12...Qe7 (12...N7b6 13.ed5 (13.cb6?! Qd6 14.ed5 cd5+–) 13...cd5 14.b5+–) 13.ed5 h5 (13...f5 14.Rd1 e4 15.Nh3+–) 14.Nf3 (14.dc6 bc6 15.Qa4 Nb6 16.Qc6 Bd7+–) 14...Bh6 (14...Nb6 15.Nh4 Rh6 16.Bc1+–) 15.Nh4 Rg8 16.dc6 f5 (16...bc6 17.Bc4 Rg7 18.Bf7+–) 17.Bc4 Qg5 (17...Rg7 18.cd7 Bd7+–) 18.Bg8 Qd2 19.Kf1 b6 20.Qf7 1–0. DEFFM – GuestZGQZ, freechess.org, 2018.

5.d4 d6 6.de5 de5 7.Qd8 Kd8 8.Nc3 Be6 9.Nf3 Nc6 (9...Kc8 10.Rd1+=) 10.a3 (10.b5 Nce7+=) 10...a6 (10...Kc8 11.Rd1+=) 11.Be2 (11.Rd1 Kc8+=) 11...Ke7 (11...Kc8 12.Ne4+=) 12.0–0 (12.Rd1 Kf7+–) 12...Nh6 (12...Rd8 13.Rad1+–) 13.Nd5 (13.Rad1 Kf7+–) 13...Bd5 (13...Kd8 14.Rfd1 Kc8 15.Nd2+–) 14.cd5 Nd8 15.Rac1 (15.Rfd1 c6+–) 15...c6 16.Rfd1 Nhf7 17.Ne1 (17.e4 Nd6 18.Bd3 cd5 19.ed5 Kd7+=) 17...Nd6+= 18.dc6 (18.Rc5 e4+=) 18...Nc6 19.Nd3 b6?? (better 19...Rac8+=) 20.Rc6+– (20.Rc6 Rhc8 21.Ne5 Rc6 22.Nc6 Kd7 23.Nd4+–) 1–0. DEFFM – GuestMKKM, freechess.org, 2018.

5.d4 d6 6.de5 fe5 7.Qb3 (7.Nf3 a5=) 7...Be6 (7...a5 8.Nf3=) 8.Nf3 Ne7 (8...a5!?=) 9.Ng5+= Qd7 10.Ne6 (10.Nc3 Nbc6+–) 10...Qe6+= 11.Be2 Nd7 (11...a5 12.a3+=) 12.Nd2 0–0–0 (12...0–0 13.Ne4+=) 13.0–0+– Nf5 14.Ne4 h5 15.a4 Rhf8 16.a5 c6? (16...a6 17.Rad1+–) 17.b5 White intends a6 (17.a6 b6+–) 17...cb5 (better 17...Nc5!? 18.Nc5 dc5+–) 18.a6+– bc4?? (better 18...b6 19.Qb5 Kc7+–) 19.Qb7 1–0. DEFFM – GuestTWJT, freechess.org, 2019.

5.Ne2 d5 6.cd5+= Qd5 7.Ng3 (7.Nbc3 Qd6 8.Rc1 Bd7+= (8...Qb4? 9.Nd5 Qb2 10.Rc2+–)) 7...Be6 8.Nc3 Qd8 9.Bb5 Nd7 10.0–0 c6 11.Ba4 Nb6 12.Bb3 Bd7 (12...Bc4!? 13.Re1 Qd6=) 13.Nge4 f5? (better 13...Qe7+=) 14.Nd6+– Ke7 (14...Kf8 15.Nb7 Qh4 16.a3+–) 15.Nf7 (15.Nf7 Qc7 16.Qc2+–) 1–0. aravind555 – Hyousif, lichess.org, 2019.

5.Ne2 Ne7 6.Ng3 0–0 7.Bd3 d5 8.cd5 Nd5 9.Bc4 c6?? (better 9...Kh8=) 10.e4+– Be6 11.ed5 Bd5 (11...cd5 12.Be2+–) 12.Bd5 Qd5 13.0–0 Nd7 14.Qb3 (better 14.Re1!?+–) 14...Qb3+– 15.ab3 Nb6 (15...f5 16.Re1+–) 16.Nc3 (16.d4 ed4 17.Bd4 f5 18.Bg7 Kg7+–) 16...Nd5 (16...Rfd8 17.Rfd1+–) 17.Nd5 cd5 18.d4 Rac8 (18...h5 19.Rfe1+–) 19.de5 (19.Ra7 Rc2 20.Ba1 h5+–) 19...fe5 20.Ra7 Rc2 21.Ba1 Rb2?? (21...h5+–) 22.Bb2 e4 (22...Rf7 3.Ra8 Rf8 24.Rf8 Kf8 25.f4+–) 23.Bg7 Kg7 24.Rb7 Rf7 25.Rf7 Kf7 26.Rc1 (26.b5 Ke8+–) 26...Ke6 27.b5 Ke5 28.b6 d4 (28...Kf4 29.b7 Kg4 30.b8Q Kg5 31.Qd8 Kh6 32.Rc7 e3 33.Qh4) 29.b7 e3 (29...Kd5 30.b8Q e3 31.Qb7 Kd6 32.Rc6 Ke5 33.Qc7 Kd5 34.Qd6) 30.fe3 (30.b8Q Kd5 31.Qb7 Kd6 32.Rc6 Ke5 33.Qc7 Kd5 34.Qd6) 30...de3 (30...Kd6 31.b8Q Ke6 32.Qb6 Ke7 33.Rc7 Ke8 34.Qb8) 31.b8Q Kd4 (31...Kd5 32.Rd1 Ke6 33.Qd6 Kf7 34.Rf1 Ke8 35.Rf8) 32.Qd8 (32.Qd8 Ke5 33.Qe7 Kd5 34.Rc5 Kd4 35.Qd6; 32.Qd6) 1–0. aravind555 (1790) – ilazhalili (1805), lichess.org, 2020.

5.Nf3 d6 6.Be2 Be6 7.0–0 Nd7 8.d4 Ne7 9.d5 Bf7 10.Nc3 c6 (better 10...0–0!?+–) 11.Ne4+– Qc7 (11...0–0 12.dc6 Nc6+–) 12.dc6 bc6 13.Nd6 Kf8 14.Nf7 (14.Qd2 Be6+–) 14...Kf7 15.c5 Rad8? (better 15...Rhd8+–) 16.Bc4 (16.Qb3 Kf8+–) 16...Kf8 17.Qb3 (17.Qc2 Bh6+–) 17...g5 (17...a5 18.a3 Bh6 19.Rfd1+–) 18.Rad1 Bh6 (18...a5 19.Qd3 Ke8 20.a3+–) 19.Rd6 Nf5 (19...Kg7 20.Be6 Nc8 21.Rd7 Rd7 22.Bd7 Qd7 23.Ne5+–) 20.Ne5! Nd6 (20...Ne5 21.Rf6 Double attack; 20...fe5 21.Qd3 Combination) 21.cd6 Qd6 (21...Qb6 22.Nf7 Kg7 23.h4+–) 22.Nf7 Qe7 23.Nh8 Qg7 (23...Rb8 24.Nf7 Bg7+–) 24.Nf7 Rb8 25.Qd3 Rb4 26.Qd6 Ke8 27.Qb4 c5 28.Qb7 g4 (28...Qf7 29.Bf7 Ke7 30.Bh5 a5 31.Rd1 c4 32.Qd7 Kf8 33.Qf7) 29.Qc8 Ke7 30.Qd8 1–0. DEFFM – GuestRRXL, freechess.org, 2018.

5.Nf3 d6 6.Be2 Bg4 7.h3 Bf3 8.Bf3 Nc6 (better 8...c6!?+=) 9.b5+– Nce7 10.Bb7 Rb8 11.Bf3 Nh6 12.Qb3 (12.Qa4 c6+–) 12...0–0 13.c5 (13.Qa3 c6 14.bc6 f5 15.Bd5 Nd5 16.cd5 Qb6+–) 13...Nf7 14.cd6 cd6 15.Nc3 Nf5 (15...Qd7 16.Rc1+–) 16.Bd5 Ne7 17.Be6 Qe8 18.Nd5?? (18.0–0 f5+–) 18...Rb7?? (better 18...Nd5 19.Bd5 Rb5 20.Bf7 Rf7–/+) 19.a4+– a6 20.0–0 ab5 21.Ne7 (21.Rfc1!?+–) 21...Re7+– 22.Bf7 (22.Bd5 ba4 23.Ra4+–) 22...Rff7 (better 22...Qf7!? 23.Qf7 Ref7 24.ab5 Rb8=) 23.ab5+– Rb7 24.b6 Qb8 (24...Qc6 25.Ra6+–) 25.Ra6+– Qc8 (25...Kh8 26.Qd5 Rf8 27.Ba3+–) 26.Rfa1 d5?? (better 26...Qc6+–) 27.Qd5 (better 27.Ra8 Qf8 28.Qd5+–) 27...Rbd7 28.Ra8 Qa8 (28...Rd5 29.Rc8 Bf8+–) 29.Ra8 Bf8 30.Qc4 Rd2 (30...Kg7 31.d4 ed4 32.Bd4 g5+–) 31.Ba3 (31.Ra7 Rd6 32.Qf7 Kh8 33.Qf8) 31...Kg7 32.Bf8 Rf8 33.Rf8 (33.Ra7 Rd7 34.Rd7 Kh8 35.b7 h6 36.Qc8 Kg8 37.Qf8 Kf8 38.b8Q) 33...Kf8 34.Qc8 (better 34.Qb4 Kg7 35.Qd2 Kf7 36.Qd7 Kf8 37.b7 h6 38.b8Q) 34...Kg7 35.b7 Rd1 36.Kh2 Rf1 37.b8Q Rf2 (37...Rh1 38.Kh1 Kh6 39.Qg4 g5 40.Qf8 Kg6 41.e4 f5 42.ef5) 38.Qf8 1–0. GuestZLVQ – GuestZVTS, freechess.org, 2017.

5.Nf3 g5 6.d4+= e4 (6...g4!? 7.Nfd2 f5+=) 7.Nfd2+– f5 (7...Qe7 8.Nc3 Kd8 9.Nde4 Qb4 10.Rb1+–) 8.Qh5 Kf8 9.b5 (9.Nc3 Nc6 10.b5 Nb4+–) 9...d6 10.c5 (10.f3 ef3 11.Qf3 Qe7+–) 10...a6 (10...dc5 11.Bc4 Qe7 12.Ba3+–) 11.cd6 cd6 12.Ba3 (12.Bc4 d5 13.Ba3 Ne7+–) 12...ab5 (12...Nh6 13.Bc4+–) 13.Bb5+– Nf6 (13...Bf6 14.Bd6! Kg7 15.Nc4+–) 14.Qg5 Bd7?? (better 14...Kf7+–) 15.Bd6 Ke8 (15...Kf7 16.Bc4 Be6 17.Be6 Ke6 18.Bb8 Rb8 19.Qg7+–) 16.Bd7 (better 16.Be2 Kf7 17.Bc4 Be6 18.Be6 Ke6 19.Bb8 Rb8 20.Qg7+–) 16...Qd7 17.Be5 Rg8 (17...Qe7+–) 18.Bf6 h6 (18...Ra6 19.Qh5 Qf7 20.Qf7 Kf7 21.Bg7 Rg7 22.0–0+–) 19.Qh5 (19.Qg3 Kf7 20.Bg7 Rg7+–) 19...Qf7 20.Qf5 Bf6 (20...Qf6 21.Qc8 Qd8 22.Qb7+–) 21.Ne4 Nd7 (21...Ra6 22.Qc8 Bd8 23.Qb8 Rg2+–) 22.Nd6 Ke7 23.Nf7 Kf7 24.Qd7 Be7 25.0–0 Rgd8 26.Qf5 (26.Qb7 Rab8 27.Qf3 Kg7+–) 26...Bf6 27.Qh5 (27.Qh5 Kg8 28.Qh6+–) 1–0. GuestBZNP – GuestLJST, freechess.org, 2018.

5.Nf3 Nh6 6.Nc3 0–0 7.c5 (7.Be2 f5+=) 7...d6 (7...d5 8.cd6 Qd6 9.Bc4 Nf7 10.a3=) 8.cd6 (8.Bc4 Nf7+=) 8...Qd6= 9.Bc4 Be6?? (better 9...Nf7=) 10.Nb5+– Qb6 (10...Bc4 11.Nd6 cd6 12.d3+–) 11.Be6 Kh8 12.Bc4 a6 (12...e4 13.Ng1+–) 13.Nc3 Qb4 14.Qb3 Qb3 15.Bb3 (15.ab3 Nd7+–) 15...c6 (15...Nc6 16.Ba3 Rfe8 17.Bd5+–) 16.d4 ed4 (16...Nd7 17.Rd1+–) 17.Nd4 Re8 (17...Nd7 18.Ne6 Rfc8 19.0–0–0+–) 18.Ne6 Rc8 (18...Ra7 19.Ne4 Nd7 20.0–0–0+–) 19.Ne4 Nd7 20.Rd1 Ne5 21.Ng7 Kg7 22.Be5 fe5 23.Rd7 (23.Rd7 Kf8 24.Rh7+–) 1–0. pcmvr – miodrag, net–chess.com, 2017.

5.Nf3 Nh6 6.Be2 Nc6 (6...e4 7.Nd4+=) 7.b5 Ne7 8.a4 d5 9.c5 (9.d4 e4 10.Nfd2 f5+=) 9...Nef5 10.0–0 d4 (10...e4 11.Ne1+=) 11.e4 (11.Bc4 g5 12.e4 Ne7+=) 11...Ne7+= 12.Bc4 c6 13.h3 cb5 (13...Qa5 14.d3+=) 14.ab5 f5 15.d3 fe4 16.de4 Neg8 (16...Qc7 17.Qc2+–) 17.Qb3 Bf6 (17...Qf6 18.b6 a6 19.Bb5 Kf8 20.Bc1+–) 18.Nbd2 (18.b6 a6+–) 18...Qe7 (18...Ne7!?+–) 19.Rfc1+– Bh3? (better 19...g5+–) 20.gh3 0–0–0 (20...Bg5+–) 21.Ra7 g5 (21...Kd7 22.Rb7 Ke8 23.Re7 Ne7+–) 22.c6 (22.b6 Qd6 23.Be6 Qe6 24.Qe6 Kb8 25.Rca1 g4 26.Ra8) 22...Qc5 (22...Qe6 23.Be6 Rd7 24.cb7 Kd8 25.b8Q Ke7 26.Rd7) 23.Be6 Rd7 24.Rc5 (24.Bd7 Kd8 25.Ra8 Kc7 26.b6 Qb6 27.Rc8 Kd6 28.Qe6) 24...Kd8 (24...Ne7 25.Ra8 Kc7 26.b6 Kd6 27.Rd5 Nd5 28.Qd5 Ke7 29.Qd7) 25.Bd7 (25.Bd7 Ne7 26.Ra8 Kc7 27.b6 Kd6 28.Nc4 Kc5 29.Ba3; 25.cd7 Ke7 26.Rc8 Nf7 27.Ba3 Nd6 28.d8Q) 1–0. Abdullaevich (1805) – Slava333, lichess.org, 2019.

5.Nf3 Ne7

6.b5 0–0 7.Be2 d6 8.0–0 Bg4 (8...a6 9.ba6 Na6 10.d4=) 9.h3 Bf3 (9...Be6 10.d4=) 10.Bf3+= (worse 10.gf3 a6=+) 10...c6 11.a4 d5 12.Bc3 (12.bc6 bc6 13.d4 e4+=) 12...e4 (12...dc4 13.Na3=) 13.Be2 f5 14.Bg7 Kg7 15.cd5 Qd5 16.d4 Nd7 (16...ed3 17.Bd3 Rd8 18.Ra3=) 17.Nc3+= Qe6 18.Qb1 Nd5 19.Nd5 cd5 20.Rc1 Rac8 21.Qb4 Nb6 22.Rc5 Rc5 (22...Nd7 23.Rc8 Rc8 24.a5+=) 23.dc5 Nc4 (23...Nd7!?+=) 24.Rd1 Rd8?? (better 24...Rc8+–) 25.Bc4+– Qe7 (25...Rd7 26.Qd2+–) 26.Bd5 Qe5 (26...Rd7 27.Qd4 Kh6 28.c6 bc6 29.bc6+–) 27.Qc4 (27.c6 bc6 28.bc6 Re8+–) 27...b6 (27...Kh6 28.a5+–) 28.c6 Kh6 (28...Qc7 29.Rd4 Re8 30.Be4+–) 29.Rd4 (29.c7!? Rc8 30.Rc1 Qh8+–) 29...Rc8 (29...Re8 30.Bg8 Qg7 31.Be6+–) 30.Qb4 (better 30.Be6 Rc7+–) 30...Qg7 (30...Qf6 31.a5+–) 31.Be6 Rc7 (31...Re8 32.Bd7 Ra8 33.c7+–) 32.Qd6 Qe7 33.Qe7 Re7 34.Bc8 (better 34.Bd7 Rf7+–) 34...Kg7 (34...Re5 35.Be6! a6+–) 35.Rd7 Rd7 36.cd7 Kf7 37.d8Q (37.d8Q h5 38.Qd5 Kg7 39.Qe5 Kh7 40.Qe7 Kh6 41.Qf8 Kg5 42.h4 Kh4 43.Qf6 g5 44.Bf5 a6 45.g3) 1–0. Abdullaevich (1840) – ilazhalili (1845), lichess.org, 2020.

6.d4 ed4 7.Bd4 d6 8.Ng5 (8.Be2!?=) 8...0–0 (8...Nbc6 9.Nf3=+) 9.Nf3= Bg4 (9...Nbc6 10.Bc3=) 10.Be2 Nbc6 11.Bc3 Ne5 12.Ne5 (12.0–0 Qe8=) 12...Be2=+ 13.Qe2 de5 (13...fe5 14.e4=) 14.0–0 Nc6 (14...c5 15.Rd1 Qc7 16.Na3=) 15.b5 Nb8 16.c5 (16.Rd1 Qe7+=) 16...Qe8 (16...Qe7 17.Qc4 Qf7 18.Nd2=) 17.Qc4 (17.Rd1 a6 18.a4 Qe6+=) 17...Kh8 (17...Qf7 18.Nd2=) 18.Nd2 c6 19.a4 cb5 (19...f5 20.e4+=) 20.ab5+– (worse 20.Qb5 Na6=) 20...Nd7 (20...a6 21.Qe2+–) 21.Bb4 (21.Ne4 f5 22.Nd6 Qe7 23.Nb7 Nb6 24.cb6 Qb7 25.Ra7 Ra7 26.ba7 Qa7+–) 21...Qf7 (21...f5 22.Rfc1+=) 22.c6 (better 22.Rfc1+–) 22...Qc4?? (better 22...Nb6 23.Qa2 Qa2 24.Ra2 Rf7+–) 23.Nc4+– bc6 24.Bf8 Rf8 (24...Nf8 25.bc6 Ne6 26.Nb6+–) 25.bc6 Nb6 26.Nb6 ab6 27.c7 Rc8 (27...f5 28.Ra7 Rc8 29.Rb7+–) 28.Rfd1 (better 28.Ra7 f5 29.Rd1 Rc7 30.Rd8 Bf8 31.Rc7 Kg8+–) 28...e4 (28...Rc7 29.Ra8 Bf8 30.Rf8 Kg7+–) 29.Rd8 (29.Rd8 Bf8 30.Rc8 Kg7 31.Rf8 Kf8 32.c8Q Ke7 33.Ra7 Kd6 34.Rd7 Ke5 35.Qe8 Kf5 36.Rd5 Kg4 37.Qe4) 1–0. aravind555 (1790) – icanthearu (1770), lichess.org, 2020.

6.Be2 0–0 7.0–0 a6 8.a4 (8.d4 e4 9.Nfd2 f5+=) 8...Nec6 (8...Nbc6 9.b5 Nb8 10.Nc3+=) 9.b5+= ab5 10.ab5 Ra1 11.Ba1 Nb4 (11...Ne7 12.Nc3+=) 12.Qb3 (better 12.c5 d5 13.Qb3+–) 12...Qe7?? (better 12...c5+–) 13.c5+– d5 (13...Kh8 14.Qb4 e4 15.Nd4+–) 14.Qb4 (better 14.cd6 Be6 15.de7 Bb3 16.ef8R Kf8+–) 14...b6 15.Qb3 Be6 16.c6 d4 (16...Rf7 17.Bb2+–) 17.Bc4 Re8 (17...Bc4 18.Qc4 Qf7 19.Qf7 Kf7 20.ed4+–) 18.ed4 ed4 (18...e4 19.d3 ef3 20.Re1+– (20.gf3?! Bf7+–)) 19.Nd4 (better 19.Re1 Qd6 20.Re6 Re6 21.Be6 Kh8 22.Bd4+–) 19...Bc4 20.Qc4 Kh8 (20...Qf7 21.d3 Qc4 22.dc4+–) 21.Nf3 f5 (21...h6 22.d3+–) 22.Bg7 Qg7 23.Nc3 Qe7 (23...h6 24.Qf4 Rd8 25.Re1+–) 24.h4 (24.Qd4 Qg7 25.Qg7 Kg7+–) 24...Qc5 (24...Qg7 25.Nd5+–) 25.Qb3 (25.Qc5 bc5 26.Ra1 Kg7+–) 25...Rd8 (25...Qf8 26.Nd5 Qg7 27.Qc3 Qc3 28.dc3+–) 26.Re1 (26.Qf7 Rf8 27.Qc7 Qc4+–) 26...h6 (26...Qf8 27.Nd5 h6 28.Nc7+–) 27.Qf7 (27.Qf7 Nc6 28.Qf6 Kh7 29.bc6+–) 1–0. GuestGPKZ – GuestCHHG, freechess.org, 2019.

6.Be2 0–0 7.0–0 d6 8.d4 ed4 9.Nd4 Nbc6 10.Qb3 a5 11.c5 Kh8 12.cd6 cd6 13.a3 f5 14.Ne6?? (better 14.Nc6 bc6 15.Nd2+=) 14...Be6–+ 15.Bg7 Kg7 16.Qe6 ab4 (better 16...d5 17.b5 Rf6 18.Qf6 Kf6 19.bc6 bc6–+) 17.Nd2?? (17.Qb3 Qa5=+) 17...Ra3?? (better 17...d5 18.Ne4 fe4 19.ab4 Ra1 20.Ra1 Nf5–+) 18.Bc4?? (18.Ra3 d5 19.Ra8 Qa8 20.Qd6–+) 18...d5 (18...Ra1 19.Ra1 Rf6 20.Qf6 Kf6 21.Bb3–+) 19.Bb3 (19.Nb3 Rf6 20.Nc5 b6–+ (20...Re6?! 21.Ne6 Kf6 22.Nd8 Ra1 23.Ra1 dc4 24.Nb7–/+)) 19...Rf6 (19...Ra1 20.Ra1 Rf6 21.Qf6 Kf6 22.Nf3–+) 20.Ra3 (20.Qf6 Kf6 21.Rab1 d4–+) 20...Re6 (20...Re6 21.Ra4 f4 22.ef4 Nd4–+) 0–1. GuestGDVQ – GuestPSNG, freechess.org, 2017.

4.c4 e6

5.a4 Ne7 6.b5 0–0 7.Nc3 d5 (7...c5 8.d4 cd4 9.Qd4=) 8.Nf3 (8.d4 Nd7=) 8...dc4 (8...a6!?=) 9.Bc4+= Kh8 10.Qb3 (10.0–0 a6+–) 10...e5+= 11.0–0 (11.d4 Bg4+=) 11...Nd7 (11...Bg4 12.Be2+=) 12.d4+– ed4 (12...Nf5 13.Ba3 Nd6 14.a5+–) 13.Nd4 Nc5 (13...Ne5 14.Ne6 Be6 15.Be6+–) 14.Qc2 (14.Qa3 b6+–) 14...Nf5+– 15.Rad1 Nd4 16.Rd4 Qe7 (16...Bf5 17.Qd1 Qe7 18.Ba3+–) 17.Nd5 Bf5?? (better 17...Qe5 18.Rd2 Qf5+–) 18.Qf5!! (18.Qf5 gf5 19.Ne7 Na4 20.Rh4+–; 18.Ne7?! Bc2 19.Rc1 Rae8+– (19...Ba4?? 20.Rh4 Bh6 21.Rh6+–)) 1–0. BeepBeepImAJeep (2700) – Rijeka (2415), lichess.org, 2016.

5.a4 Ne7 6.b5 Kf8 7.Nc3 Kf7 8.Nf3 Rf8 9.Be2 Kg8 10.0–0 d5 11.d4 c6 12.Qb3 Kh8 (12...Qd7 13.Rfc1+–) 13.Rac1 a6 14.h3 (14.b6 a5+–) 14...Nd7 (14...ab5 15.ab5 cb5 16.Nb5+–) 15.Ba3 Re8 16.Rfd1 (16.cd5 ed5 17.bc6 bc6+–) 16...Nf8 (16...ab5 17.ab5 dc4 18.Bc4+–) 17.Nd2 (17.bc6 bc6 18.Rb1 Nd7+–) 17...g5 (17...Nd7 18.cd5 ed5 19.bc6 bc6 20.Na2+–) 18.Bh5 Nfg6 19.Qb1 (19.bc6 bc6 20.Rb1 Qd7+–) 19...Rg8 (19...ab5 20.cb5 Rg8 21.Bc5+–) 20.Bc5 (20.bc6 bc6 21.Bc5 Bd7+–) 20...Bf8 (20...cb5 21.ab5 b6 22.Bb4+–) 21.bc6 bc6 22.Qd3 Nf5 23.cd5 (23.Bf8 Qf8 24.Rb1 Qh6+–) 23...cd5 24.e4 (24.Bf8 Qf8 25.Nb3 Qd6+–) 24...de4 (better 24...Nf4!? 25.Qb1 de4 26.Qe4 Rb8 27.Bf8 Rf8=+) 25.Qe4+– (worse 25.Nde4 Nf4 26.Qf1 Nh5=+) 25...Bd7 (25...Rb8 26.Bf8 Rf8 27.d5+=) 26.Nc4 (26.Bf8 Qf8 27.Bg4 Nd6+–) 26...Rb8 (26...Nf4 27.Bg4+–) 27.g3 (27.Bg4 Ng7 28.Bf3 Nf5+–) 27...Qc7 28.Ne2 (28.Bf3!?+–) 28...Bc5 (28...Ba4?! 29.Rd3 Qc6 30.Bf3 Qe4 31.Be4=+) 29.dc5 Qc5?? (better 29...Ba4 30.Rd2 Qc5 31.Qe6 Ng7=+) 30.Rd7+– Rb4 (30...Nf8 31.Rb7 Rb7 32.Qb7 Qe7+–) 31.Qe6 Ng3 (31...Ng7 32.Rg7! Rg7+–) 32.Ng3 (32.Ng3 Qf8 33.Nd6+–; 32.Qf6 Rg7 33.Qg7) 1–0. BeepBeepImAJeep (2720) – Rijeka (2445), lichess.org, 2015.

5.b5 Ne7 6.Nf3 0–0 7.Be2 c6 8.a4 cb5 9.ab5 d5 10.d4 Nd7 11.Nbd2 Nb6 (11...dc4 12.0–0+=) 12.c5+– Nd7 13.Qb3 Nf5 14.0–0 Bh6 15.g4 (15.Bd3 a6+–) 15...Ne7 16.e4 b6 (16...Nb8 17.Rfe1+–) 17.ed5 Nd5 18.Ne4 (better 18.Bc4 Nb8 19.Ne4+–) 18...Bb7? (18...bc5!? 19.Bc4 N7b6 20.dc5 Nc4 21.Qc4 Qc7+=) 19.Nd6 (19.c6 Bc8 20.cd7 Bb7+–) 19...Qc7 (19...Nf4 20.Nb7 Ne2 21.Kh1 Qe8+–) 20.Nb7+– Qb7 21.c6 Qc7 22.cd7 Qd7 23.Bc4 Rfc8 24.Bd5 ed5 25.Rfe1 (25.h3 Rc4+–) 25...Re8 (better 25...Qg4!? 26.Kh1 Qd7+–) 26.h3 Bd2?? (26...Re1 27.Re1 a6+–) 27.Nd2 Re1 28.Re1 Rf8 (28...Kh8 29.Ba3 Rc8 30.Re7+–) 29.Qe3 (better 29.Nf1 Ra8+–) 29...Qb5 30.Qe6 Rf7 31.Ba3 Qa5 (31...Kg7 32.Qd6 Qd7 33.Re6 Qd6 34.Rd6+–) 32.Nb1 (32.Qe8 Kg7 33.Re7 Qc3 34.Qf7 Kh6 35.Qg7 Kg5 36.Re5 fe5 37.Be7 Kf4 38.Qf8) 32...Kg7 (32...Qa4+–) 33.Qe8 h5 (33...Qe1 34.Qe1 Rc7+–) 34.Re7 (34.Bf8! Kg8 35.Bh6 Kh7 36.Qf7 Kh6 37.Qf8 Kg5 38.f4 Kh4 39.Qf6 Kh3 40.Re3 Kg4 41.Qg5) 34...Re7+– 35.Qe7 Kh6 36.Qf8 Kg5 37.h4! Kg4 (37...Kh4 38.Qf6 Deflection) 38.Qc8 (38.Qf6 Qc3 39.Qg6 Kf3 40.Nc3 Kf4 41.Bd6 Kf3 42.Qh5) 38...Kh4 39.Kg2 (39.Qe6 Qa4 40.Qf6 Kg4 41.Qe6 Kh4 42.Qg6 Qd1 43.Kh2 Qh1 44.Kh1 a5 45.Qg3) 39...Qe1 40.Qh3 (better 40.Nc3 Qd2 41.Qh3 Kg5 42.Ne2+–) 40...Kg5 41.Qg3 Kh6 (41...Kf5 42.Nc3 g5 43.Qd3 Ke6 44.Nd5 Qf2 45.Kf2 Kd5 46.Qb3 Kc6 47.d5 Kb7+–) 42.Bf8 Kh7 43.Qc7 Kg8 (43...Qe7 44.Qe7 Kg8 45.Qg7) 44.Qg7 1–0. GuestWNPZ – GuestJBXQ, freechess.org, 2017.

5.Qc2 Ne7 6.Nf3 0–0 7.Be2 c6 8.0–0 d6 9.Nc3 d5 10.d4 Nd7 11.a4 Nb6 (11...dc4 12.Ba3+=) 12.c5+– Nd7 13.e4 Qc7 14.a5 e5 (14...Rd8!?+–) 15.Qb3+– ed4 (15...Kh8 16.ed5 cd5 17.Nd5 Nd5 18.Qd5+–) 16.ed5 cd5 17.Nd5 Nd5 18.Qd5 Kh8 19.Nd4 Ne5 20.a6 Rd8 (better 20...Rb8+–) 21.Nb5 Qc6 (21...Qe7 22.Nd6 Rb8 23.Be5 Be6+–) 22.Qd8 (22.Qd8 Qe8 23.Qe8 Bf8 24.Qf8) 1–0. GuestNZWM – GuestFDQP, freechess.org, 2017.

5.d4 Ne7 6.Nf3 c6 7.Nc3 d5 8.c5 Qc7 9.b5 e5 10.de5 (10.bc6!? bc6 11.Be2+=) 10...fe5= 11.Be2 0–0 12.0–0 Nd7 13.Rc1 a6 (13...Bf6 14.Qc2=) 14.b6 Qd8 15.Re1 (15.e4 d4 16.Na4 Kh8+=) 15...Re8 (15...Nc5 16.Ba3 Ne6 17.e4=+) 16.Ng5 (16.Na4 e4 17.Nd2 Ne5=) 16...Nf8 (16...Nc5!? 17.Ba3 Ne6 (worse 17...Qb6 18.Bc5 Qc5 19.Nd5+–) 18.Ne6 Be6–/+) 17.Bg4 (17.Na4 Nf5 18.Nf3 Nh4=) 17...Bg4 18.Qg4 Qd7 (18...Nf5 19.Nh3=+) 19.Qh4 (19.Qd7 Nd7 20.Ne6 Kf7 21.Ng7 Kg7=) 19...h6 20.Nf3 Nf5 21.Qa4 Ne6 22.e4 (better 22.Ne2 e4 23.Nfd4=+) 22...Ne7?? (better 22...Nc5 23.Qd1 de4 24.Ne4 Qd1 25.Rcd1 Na4–/+) 23.ed5+– Nc5 (better 23...Nd5!? 24.Nd5 Qd5+=) 24.Qc4+– Qd6? (better 24...cd5 25.Qc5 e4+–) 25.dc6 Kh7 (25...Ne6 26.cb7 Rad8 27.Ne4+– (worse 27.Qa6 Nd4+–)) 26.cb7 (better 26.Ba3 Qe6 27.Qc5 Nc6+–) 26...Nb7 27.Rcd1 (27.Ne4 Qb6 28.Rb1 Qc6 29.Neg5 hg5 30.Ng5 Kh8 31.Qh4 Kg8 32.Qh7 Kf8 33.Be5 Rec8 34.Bg7 Ke8 35.Rbd1 Nd6 36.Qh8 Kd7 37.Re7 Ke7 38.Bf6 Kd7 39.Qg7 Ke8 40.Qe7) 27...Qc6? (better 27...Qb6 28.Na4 Qb5+–) 28.Qc6+– Nc6 29.Nd5 e4? (29...Rad8+–) 30.Bg7 Kg7 31.Nd4 (better 31.Nc7!? Kf8 32.Nh4 g5 33.Na8 Ra8+–) 31...Nd4 32.Rd4 (32.Nc7 Nc2 33.Re2 Na3 34.Na8 Ra8 35.Rd7 Kf6 36.Rb7 Rd8+–) 32...Re5? (32...Rad8 33.Red1 Re6 34.Kf1+–) 33.Nc7 (33.f4 Rf5 34.g4 Rf7+–) 33...Rb8 (33...Rd8 34.Rd8 (34.Ree4?? Re4 35.f3 Red4 36.Ne6 Kf6 37.Nd4 Rd4–+; 34.Rde4?? Re4 35.Kf1 Re1 36.Ke1 Nc5–+) 34...Nd8 35.f4+–) 34.Rde4 Re4 35.Re4 Nc5 36.Re7?? (36.Ne6 Ne6 37.Re6 Rd8+–) 36...Kf6?? (36...Kf8!? 37.Re5 Rb6+–) 37.Rh7 (better 37.Nd5 Kf5 38.f4+–) 37...Rb6?? (better 37...Ke5 38.Rh6 Rb6+–) 38.Nd5 Kg5 Threatening mate... how? 39.Nb6 a5 (39...h5 40.Nd5+–) 40.Ra7 a4 (40...Nd3 41.Ra5 Kf6 42.Nd7 Kf7 43.Ne5 Ke6 44.Nd3+–) 41.Na4 (better 41.Ra5 a3+–) 41...Na4 (41...Nd3 42.Ra5 Kf6 43.Nc5+–) 42.Ra4 h5 43.Re4 Kf5 44.a3 (better 44.Rc4+–) 44...Ke4 45.a4 Kd5 46.a5 Kc6 47.a6 (better 47.h4!? Kb5 48.Kh2 Ka5+–) 47...Kb6 48.a7 (better 48.f3 Ka6 49.Kf2 Kb5+–) 48...Ka7 49.f3 (49.g4!? Kb6+–) 49...Kb6 50.Kf2 Kc6 51.Ke3 Kd6 52.Kf4 Ke6 53.Kg5 Kf7 54.f4 Kg7 55.g3 Kf7 56.g4 (better 56.Kh6+–) 56...hg4+– 57.Kg4 Kf6 58.h4 Kg7 59.h5 Kh6 60.hg6 Kg6 61.f5 Kf6 62.Kf4 Kf7 63.Ke5 Kf8?? (63...Ke7 64.f6 Kf8 65.f7=) 64.Kf4 (64.Ke6 Ke8 65.f6 Kf8 66.f7 Kg7 67.Ke7 Kh6 68.f8Q Kg5 69.Qf3 Kh4 70.Ke6 Kg5 71.Qg3 Kh5 72.Kf5 Kh6 73.Qg6) 64...Kf7 65.Kg4 Kf8 66.Kg5 Kf7 ½–½. Markzela (1750) – ateist44 (1740), lichess.org, 2020.

5.Nf3 d6 6.d4 Qe7 7.Be2 Nc6 8.a3 Bd7 9.0–0 0–0–0 (9...Nh6 10.Nc3+–) 10.b5 Na5 (10...Nb8!?+–) 11.Qa4 b6 12.c5 (12.Bc3 Kb8 13.Ba5 ba5 14.Qa5 f5+–) 12...c6 (better 12...dc5!? 13.Bc3 cd4 14.Ba5 ba5 15.Qa5 Qc5 16.ed4 Qb6+–) 13.cb6+– ab6 14.Rc1 c5 (14...Kb7 15.bc6 Bc6 16.Qc2+–) 15.dc5 dc5 16.Nd4 (16.Bc3 Be8+–) 16...f5 (16...e5 17.Nc6 Bc6 18.bc6+–) 17.Bf3 (better 17.Bc3 Be8 18.Ba5+–) 17...Qd6?? (better 17...e5 18.Nb3 e4 19.Bg7 Qg7 20.Nc5 Kb8 21.Na6 Ka7 22.Rc7 Ka8+–) 18.Nc6 (better 18.Nf5 gf5 19.Bg7+–) 18...Bb2–/+ 19.Rd1? (19.Nd8 Bc1 (19...Ba1?! 20.Nf7 Qe7 21.Nh8=+) 20.Nf7 Qd3–+) 19...Qc7?? (19...Qd1 20.Bd1 Bc6 21.Ra2 Bb5 22.Qc2–+) 20.Ra2? (20.Nd8 Kd8 21.Ra2=) 20...Bc6–+ 21.bc6 (21.Rd8 Qd8 22.Bc6 Bf6–+ (22...Nc6 23.bc6 Bc1 24.Qa8 Kc7 25.Qb7 Kd6 26.Nd2+–)) 21...Rd1 22.Qd1 Be5 23.Rd2 Ne7?? (better 23...Nf6 24.h3 g5–+) 24.Rd7–/+ Bh2 25.Kh1 (better 25.Kf1 Nec6 26.Rc7 Bc7 27.Qa4–/+) 25...Qd8?? (better 25...Nec6 26.Rc7 Bc7–/+) 26.Kh2+– (26.Rd8 Rd8 27.Qe2 Bc7–/+) 26...Nac6 (26...Nec6 27.Bc6 Nc6 28.Rd8 Rd8 29.Qb3+–) 27.Rd8 Rd8 28.Qa4 (better 28.Qb3 Kc7 29.Qe6+–) 28...g5?? (28...Kc7+–) 29.Bc6 Nc6 1–0. GuestTXZF – GuestTSQC, freechess.org, 2017.

5.Nf3 Ne7 6.d3 0–0 7.Nc3 c6 8.Be2 Qc7 9.0–0 d6 10.h3 Nd7 11.Re1 (11.d4 a5 12.b5 c5+=) 11...b6 12.Rc1 Bb7 13.a3 Rad8 14.e4 c5 15.bc5 (15.d4!?+=) 15...dc5= (worse 15...Qc5 16.Nb5 e5 17.d4+–) 16.d4 (16.Qd2 a6=) 16...cd4=+ 17.Nd4 Be4?? (17...Nc5 18.Qc2 f5–/+ (worse 18...Rd4 19.Nb5 Qf4 20.Bd4+=)) 18.Ne6+– Qb7 (18...Qe5 19.Bg4 f5 20.Nd8 Rd8 21.Re4 fe4 22.Bd7 Kh8+–) 19.Bf3 (better 19.Ne4 Qc6 20.Bg4+–) 19...Bf3+– 20.Qf3 (20.gf3 Nc6+–) 20...Qf3 21.gf3 Rc8 (21...Ne5!? 22.Nd8 Rd8+–) 22.Nf8 Kf8 23.Rcd1 (better 23.Nb5!? a6 24.Nd6+–) 23...Ne5+= 24.f4?? (better 24.Re2+=) 24...Nf3–/+ 25.Kf1 Ne1 26.Ke1 Rc4 (26...f5 27.Rd7 Rc4 28.Nd1 Bb2 29.Nb2 Rf4 30.Ra7–+) 27.Rd8 Kf7 28.Rd7 (better 28.f5–/+) 28...Rf4?? (28...f5 29.Nd1 Bb2 30.Nb2–+) 29.Nd5?? (better 29.Re7 Ke7 30.Nd5 Kf7 31.Nf4+–) 29...Re4–/+ 30.Kf1 g5 (better 30...Ke8 31.Ra7 Nd5 32.Rg7 Rh4–/+) 31.Ne7?? (better 31.Ra7 h5 32.a4+=) 31...Re7–+ 32.Re7 Ke7 33.Ke2 Kf7 34.Kd3 (34.Bc1 b5–+) 34...f5 35.Bg7 (35.Bc1 g4 36.hg4 fg4–+) 35...Kg7 36.Kc4 (36.Ke2 g4 37.hg4 fg4–+) 36...Kf6 (better 36...Kg6 37.a4 a6 38.Kd5–+) 37.Kb5 (37.Kd3 g4 38.h4 Kg6–+) 37...h6 (37...g4 38.hg4 fg4 39.Ka6–+) 38.Ka6 (38.Kc4 Kg6–+) 38...g4 39.Ka7 (39.hg4 fg4 40.a4–+) 39...gh3 40.Kb6 h2 41.a4 h1Q 42.a5 Qa1 43.a6 Qa6! 44.Ka6 h5 45.Kb5 h4 46.Kc4 h3 47.Kd3 h2 48.Ke2 h1Q 49.Ke3 Kg6 (49...Qe1 50.Kd3 Qf2 51.Kc4 Qc2 52.Kb4 f4 53.Kb5 f3 54.Kb6 f2 55.Kb7 f1Q 56.Kb6 Qfb1 57.Ka5 Qca2) 50.Ke2 Kg5 51.Ke3 Qh2 52.Ke2 f4 53.Kf3 Kf5 (53...Qh3 54.Ke4 Qf1 55.f3 Qe2 56.Kd5 Qf3 57.Kd6 Qd3 58.Kc5 f3 59.Kc6 f2 60.Kb7 Qd7 61.Kb6 f1Q 62.Kc5 Qfb5) 54.Ke2 Qh3 55.Ke1 (55.f3 Qg2 56.Kd1 Qf3 57.Kd2 Qe3 58.Kc2 f3 59.Kb2 f2 60.Kc2 f1Q 61.Kb2 Qfe2 62.Kb1 Qg1) 55...Qf3 (55...Ke4 56.f3 Kd3 57.Kf2 Qh2 58.Kf1 Ke3 59.Ke1 Qe2) 56.Kd2 Ke5 57.Ke1 Kd4 58.Kf1 (58.Kd2 Qf2 59.Kd1 Kd3 60.Kc1 Qc2) 58...Kd3 59.Kg1 Qe2 (59...Qg4 60.Kf1 f3 61.Ke1 Qg1) 60.Kh2 (60.Kg2 Qg4 61.Kf1 f3 62.Ke1 Qg1) 60...f3 (60...Qf2 61.Kh1 Qe2 62.Kg1 f3 63.Kh1 Qg2) 61.Kh3 Qf2 (61...Qe6 62.Kh4 Ke4 63.Kg5 Qf7 64.Kg4 Qg6 65.Kh4 Kf4 66.Kh3 Qh5) 62.Kg4 Qg2 (62...Qe3 63.Kh4 f2 64.Kg4 f1Q 65.Kh5 Qf5 66.Kh4 Qfg5) 63.Kf5 (63.Kf4 f2 64.Kf5 f1Q 65.Ke5 Qg6 66.Kd5 Qff5) 63...f2 64.Ke6 f1Q 65.Kd6 Qc1 (65...Qf6 66.Kc5 Qgc6 67.Kb4 Qfc3) 66.Ke6 (66.Ke7 Qb7 67.Kd6 Qf4 68.Ke6 Qbf7) 66...Qgd2 (66...Qe4 67.Kd7 Qcc6 68.Kd8 Qee8) 67.Kf5 (67.Kd7 Ke4 68.Ke8 Qc7 69.Kf8 Qdd8) 67...Qce1 (67...Qh6 68.Ke5 Qc5) 68.Kf6 (68.Kg4 Qe4 69.Kh5 Qf5 70.Kh4 Qdf4) 68...Qdf2 (68...Qh6 69.Kf5 Qe4) 69.Kg7 (69.Kg6 Qeg1 70.Kh5 Qfh2) 69…Qeg1 (69...Qeg1 70.Kh6 Qh4) 0–1. Markzela (1645) – Dehadoctors (1660), lichess.org, 2020.

4.c4 Nh6

5.a4 Nf7 6.Nc3 0–0 7.b5 (7.Nf3 e5=) 7...d6 8.Nf3 c5 (8...a6 9.Be2+=) 9.Be2+= Nd7 (9...f5 10.Qc2=) 10.d4 cd4 11.Nd4 Qe8? (better 11...Nc5+=) 12.Ne6 Nc5 13.Nc7 Qd7? (13...Qd8 14.Na8 Be6+–) 14.Na8 b6 15.0–0 (better 15.Nd5!? Bb7 16.Nab6 ab6 17.Nb6 Qd8+–) 15...Bb7 16.Nb6 ab6 17.Bf3 (better 17.a5!? ba5 18.Ra5 Ne5+–) 17...Bf3 18.Qf3 Nb3 (18...Ne5 19.Qe2+–) 19.Rad1 Ne5 20.Qd5 (20.Qe2 Na5+–) 20...Kh8? (better 20...e6 21.Qe4 Nc5+–) 21.f4 (21.Ne4 Qa7+–) 21...Nf7 (21...e6 22.Qe4 Nc5 23.Qd4+–) 22.Ne2 (22.e4 e6 23.Qd3 Qc8+–) 22...Nc5 (22...e6 23.Qe4+–) 23.Nd4 (23.Ra1 e6 24.Qf3 Nb3+–) 23...Bh6 (23...e6 24.Qc6 Qc6 25.bc6+–) 24.Ba1 (24.a5 ba5 25.Nc6 Nb3+–) 24...e6 25.Qc6 Qd8 26.a5 (better 26.Bb2 e5 27.Nc2+–) 26...Qb8 (26...ba5 27.b6 Qc8+–) 27.Qb6 Qe8 (27...Qb6 28.ab6 Bg7 29.Nc6+–) 28.Nc6 White prepares a6 28...Na4 (28...Bg7 29.Bd4 Nd7 30.Qb7+–) 29.Qb7 (better 29.Bf6 Bg7 30.Bg7 Kg7 31.Qd4 e5 32.fe5 de5+–) 29...Nd8 (29...Bg7 30.Qe7 Qe7 31.Ne7+–) 30.Nd8 Qd8 31.a6 Qb8 (31...Bg7 32.Qc6 Qa5 33.Rd6+–) 32.Qb8 (32.Bf6 Kg8 33.Qb8 Rb8 34.Rd6 Bf8 35.Re6 Rc8+–) 32...Rb8 33.Bc3 (better 33.Rd6 Kg8+–) 33...Nc3 34.Rd6 (34.Rd6 Bf8 35.Re6+–; 34.a7 Rg8 35.Rd6 e5+–) 1–0. BeepBeepImAJeep (2570) – Pasttime (1850), lichess.org, 2018.

5.b5 0–0 6.Nf3 b6 7.Bd3 Bb7= 8.0–0 c6 (8...a6 9.Be2=) 9.a4 (9.Be2 a6+=) 9...c5 (9...a6 10.Nc3+=) 10.Nc3+= d6 (10...a6 11.Be2+=) 11.a5 (better 11.Be4 Be4 12.Ne4+=) 11...Bf3 (better 11...ba5 12.Qa4 Bf3 13.gf3 f5+=) 12.Qf3+– (12.gf3?! A) 12...ba5? 13.Be4 Nd7 14.Ba8 Qa8 15.Nd5+– (15.Ra5?! Ne5+=); B) 12...f5+=) 12...Nd7 13.Be4 Rc8 (13...Rb8 14.ab6 Qb6 15.Ra6 Qa6 16.ba6 Rb2 17.Bd5 Nf7 18.d4+–) 14.Bb7 (14.ab6 Ne5 15.Qh3 ab6 16.Qe6 Kh8+–) 14...Rc7 15.ab6 ab6 (15...Nb6 16.Bc6+–) 16.Ra8 Nb8 17.Bd5 Nf7 18.Na4 Qd7 (18...f5 19.Rb1+–) 19.Nb6 Qf5?! (19...Qe8 20.Qh3 f5 21.Bg7 Kg7+–) 20.Qf5 gf5 21.Rfa1 Nd7 (21...f4+–) 22.Nd7 Rd7 23.b6 Rdd8 (23...e6 24.b7 Rb7 25.Bb7 Nd8+–) 24.b7 Rb8 25.Rb8 Rb8 26.Ra8 Ra8 27.ba8Q Bf8 28.Qf8! Kf8 29.Be6 Ng5 (29...f4 30.ef4 Kg7 31.d4+–) 30.Bf5 h5 (30...h6 31.f4 Nf7 32.d4+–) 31.h4 Nf7 32.Bg6 Nd8 (32...Ne5 33.Be5 de5 34.d3+–) 33.Bh5 Nc6 34.Bf3 Nb4 (34...Nb8 35.h5+–) 35.d3! Nd3 36.Bc3 Kf7 37.h5 Kg7 (37...Nc1 38.Kf1+–) 38.g4 Kh6 39.Bd5 (39.Kg2 Nb4+–) 39...f5 (39...Nb4 40.e4+–) 40.gf5 Kh5 41.f6 ef6 42.Bf6 Kg4 (42...Kh6 43.Be7+–) 43.Be7 Ne1 (43...Kf5 44.Bd6 Kg5 45.e4+–) 44.Kf1 Nd3 45.f3 Kg3 (45...Kh5 46.Bd6 Nc1 47.e4+–) 46.Bd6 Kh3 47.Ke2 Nc1 (47...Nb4 48.Bc5 Na2 49.Kd2+–) 48.Kd2 Nb3 49.Kc2 Na1 (49...Na5+–) 50.Kb2 Kg2 51.Ka1 Kf2 52.Kb2 Ke3 53.f4 Kd4 (53...Kd2 54.Bc5 Kd1 55.f5 Ke1 56.f6 Kd2 57.f7 Kd3 58.f8Q Kd2 59.Qf2 Kd3 60.Qe3) 54.Kc2 (54.Kc2 Ke3 55.f5 Kf2 56.f6 Ke3 57.f7 Kf2 58.f8Q Kg1 59.Bc5 Kh2 60.Qf2 Kh3 61.Be6; 54.f5 Kd3 55.f6 Kd2 56.f7 Ke2 57.f8Q Kd2 58.Qf2 Kd3 59.Be6 Ke4 60.Bf5) 1–0. DEFFM – GuestBHDX, freechess.org, 2018.

6.Nc3 d6 7.Be2 (7.Nf3 0–0+=) 7...e6 (7...a5 8.Qa4 Nd7 9.Nf3=) 8.Nf3+= 0–0 9.0–0 c6 10.d4 Qe7 11.Rc1 Na6 12.a3 Nc7 13.Re1 e5 14.de5 (14.d5 f5+=) 14...de5 (14...fe5 15.Ne4=) 15.Qc2 Be6 16.c5 (16.Rcd1 a5 17.b5 cb5 18.cb5 Rad8=) 16...Rfd8 17.Rcd1 Rd1 18.Rd1 Rd8 (18...a5 19.Bc1=) 19.Rd8 Qd8 20.Ne4 f5 21.Nc3 e4 22.Nd2 (22.Nd4 Bd4 23.ed4 Nd5+= (worse 23...Qd4 24.Nb5 Qd7 25.Nc7 Qc7 26.Qc3+–)) 22...Qd7 23.Nf1 h5 (23...Ne5 24.Nd1=) 24.a4 White intends b5 (24.Nd1 Ne5=) 24...a6 (24...Ne5 25.Nd2=+) 25.b5 (25.Nd1 Ne5=) 25...ab5 26.ab5 Nb5 (better 26...cb5 27.Nb5 Bb2 28.Qb2 Na6=) 27.Bb5?? (better 27.Nb5 Bb2 28.Qb2 cb5 29.Bb5+=) 27...cb5–/+ 28.Qe2 (28.Nd2 Qd3 29.Qc1 Ne5–/+) 28...b4 29.Nd1 Qc6 (better 29...Ne5–+) 30.Bg7= Kg7 31.Qb2 Kh7 32.Qb4 Ne5 33.Nc3 (33.Nb2 Nd7 34.Na4 Nb8=+) 33...Nd7 (33...Nd3 34.Qb1–/+) 34.Nb5 (better 34.Na4!?=+) 34...Qc5–/+ 35.Qc5 (35.Qb1 Qb6–/+) 35...Nc5–+ 36.Nd6 (36.Nd2 Kg7–+) 36...Bd5 37.Nd2 Kg7 38.f3 ef3 39.Nf3 (39.gf3 Kf6–+) 39...Kf6 40.Ne8 Ke7 41.Nc7 Bc6 42.Ne5 (42.Nd4 h4–+) 42...g5 (42...Kd6 43.Nc6 Kc6 44.Ne8–+) 43.Nc6 bc6 44.Kf2 (44.Na8 Ne4–+) 44...Kd7 45.Na8 Na4 46.Ke2 Kc8 47.Kd3 Kb7 48.Kc4 (48.Kd4 Nb2–+) 48...Ka8 49.Kb4 (49.Kd4 Nb6–+) 49...Nb2 50.Kc5 Kb7 51.g3 (51.e4 Na4 52.Kd4 c5 53.Kd5 fe4 54.Ke4 Kc6–+) 51...Nd1 52.Kd4 Kb6 53.Ke5 (53.Kd3 Nf2 54.Ke2 Nh3–+) 53...Ne3 54.Kf6 (54.Kd4 Nf1 55.Kc3 Ng3–+) 54...g4 (better 54...f4 55.gf4 gf4 56.Ke5–+) 55.Kg5 (55.hg4 h4! 56.gh4 fg4 57.Ke5–+) 55...gh3 56.Kh5 h2 57.Kg5 h1Q 58.g4 fg4 59.Kf4 (59.Kf6 Qf3 60.Ke7 Nd5 61.Kd7 Qf7 62.Kd8 Qe7 63.Kc8 Qe8) 59...Qf1 (59...Qf3 60.Kg5 g3 61.Kg6 g2 62.Kh6 g1Q 63.Kh7 Qh5) 60.Kg5 (60.Ke4 Qf3 61.Kd3 Nd1 62.Kd2 g3 63.Kc1 g2 64.Kd2 Qc3 65.Ke2 Qe3 66.Kd1 g1Q 67.Kc2 Qgc1) 60...Nc4 (60...g3 61.Kh4 g2 62.Kh5 g1Q 63.Kh4 Qg4) 61.Kg4 Nb2 (61...Ne3 62.Kg3 Qf6 63.Kh2 Qf3 64.Kg1 Qg2) 62.Kh5 (62.Kg3 Nd3 63.Kg4 Ne5 64.Kg3 Qf3 65.Kh2 Ng4 66.Kg1 Qf2 67.Kh1 Qf1) 62...Kc5 (62...Qf4 63.Kg6 Nd3 64.Kg7 Ne5 65.Kh8 Qf6 66.Kh7 Qf7 67.Kh6 Qg6) 63.Kg6 Kd6 (63...Nd3 64.Kg5 Qf4 65.Kh5 Qg3 66.Kh6 Ne5 67.Kh5 Qg4 68.Kh6 Qg6) 64.Kh6 Qg1 65.Kh5 (65.Kh7 Ke5 66.Kh6 Kf6 67.Kh5 Qg5) 65...Ke6 (65...Ke5 66.Kh4 Kf4 67.Kh5 Qg5) 66.Kh4 Kf5 67.Kh3 Kf4 68.Kh4 Qh1 (68...Qg4) 0–1. Markzela (1685) – Smuelli (2405), lichess.org, 2020.

5.c5 Nf7 6.d4 c6 (6...0–0 7.Nc3=) 7.Bc4 (7.Nf3 d5+=) 7...e6 (7...d5 8.cd6 Nd6 9.Bb3=) 8.Nf3 0–0 9.0–0 d5 10.cd6 Nd6 11.Bb3 Na6 12.a3 Nc7 13.a4 (13.Qc2 a5+=) 13...Nd5 14.Ba3 f5 15.Ne5 (15.b5 cb5 16.ab5 Rf7+=) 15...Be5 (15...f4!? 16.ef4 Rf4=) 16.de5+= Nf7 17.Qd4 Qc7 18.f4 Rd8 19.Rf3 (19.Nc3 Ne7 20.Qc5 b6+=) 19...Nf6 (19...a5 20.Bd5 Rd5 21.Qc4=) 20.Qb2 (20.ef6? Rd4 21.ed4 Qd6–+) 20...Ng4 (20...Nd5 21.Nc3+–) 21.h3+– Ngh6 22.Nc3 White prepares b5 22...Qb6 23.a5 Qc7 24.Qa2 Re8 (24...b6 25.b5+–) 25.Rd1 b6 26.b5 ba5 (26...Bd7 27.Rf2 ba5 28.Rc2+–) 27.Bd6 Nd6 28.Rd6 (28.ed6 Qg7 29.bc6 Qc3+–) 28...cb5 29.Nb5 Qc1 (29...Qe7 30.Nd4+–) 30.Kh2 (30.Rd1 Qc5 31.Nd6 Re7+–) 30...Rb8 31.Be6 Be6 32.Re6 Re6 33.Qe6 Nf7 (33...Kg7 34.Rg3 (34.Na7?! Rb1+–) 34...Nf7 35.Qf6 Kg8 36.e6+– (36.Na7 Rb1 37.Rg6 hg6 38.Qg6 Kf8–+)) 34.Nd6+– (34.Na7?! Rb1 35.Qc8 Qc8 36.Nc8 a4+=) 34...Qc7 35.Qd5 (35.Rg3 Rd8 36.Nf5 Kf8+–) 35...Kg7 (35...Rd8 36.Qa2+–) 36.Rf2 (36.Nf5!? gf5 37.Rg3 Kf8 38.e6+–) 36...Rd8 37.Qd4 (better 37.Rd2+–) 37...Kh6?? (better 37...Qb6!? 38.Qb6 ab6+=) 38.Rd2 (better 38.Nf7 Qf7 39.Qd8+–) 38...Nd6+– 39.ed6 Qg7 40.Qg7 (40.Qd5!? Qf6 41.Qe5+–) 40...Kg7+= 41.Ra2 (41.Rd5!?+=) 41...Rd6= 42.Ra5 a6 43.Kg3 (43.g4 Kf6=) 43...Kf7 44.Kf3 Ke7 (44...Kf6 45.g4=) 45.g4 fg4 (45...Ke6!?=) 46.hg4+= Kf6 47.Ke4 (47.g5 Ke7+–) 47...Re6 (47...h6 48.Kf3+=) 48.Kd4+– h5 (48...Rd6 49.Kc4+=) 49.g5 (better 49.gh5 gh5 50.Rh5 Rd6 51.Kc5+–) 49...Ke7+= 50.e4 h4 (50...Rd6 51.Ke3+=) 51.Ke3 (51.Ra3 Rb6+–) 51...h3 52.Kf3 h2 53.Ra1 Rd6 54.e5?? (better 54.Kg2!?+–) 54...Rd3 (54...Rd2 55.Rh1–/+) 55.Ke2? (55.Kg2 Rd2 56.Kh1+–) 55...Rg3 56.Rh1 Rh3 57.Kf2 Ke6 58.Kg2 Rh4 59.Kg3 Rh7 60.Kg4 a5 61.Kg3 (61.f5 gf5 62.Kf3 Rh5–+ (62...Ke5?! 63.g6 Rh3 64.Kg2–+)) 61...a4 62.Kg2 Kf5 (62...a3 63.f5 Kf5 64.Rf1 Kg5 65.Kh1–+) 63.e6 Ke6 64.Re1 Kf5 65.Kh1 Kf4 (65...a3 66.Re3 Ra7 67.Re1–+) 66.Ra1 Kg5 (66...Ra7 67.Ra3–+) 67.Ra4 Kf5 (better 67...Rh6–+) 68.Ra5 Kf4 (68...Kf4 69.Ra4 Ke3 70.Ra3 Ke2 71.Ra2 Kf3 72.Ra3 Ke4 73.Ra4 Kd3 74.Ra3 Kd4 75.Ra4 Kc3 76.Ra3 Kd2 77.Ra2 Kd1 78.Ra1 Kc2 79.Ra2 Kc1–/+) 0–1. GuestMHHR – GuestFVPN, freechess.org, 2017.

5.d4 Nf7 6.Nf3 0–0 7.Be2 e6 8.Nbd2 Qe7 9.0–0 (9.Qa4 e5+=) 9...d6 (9...Qb4!? 10.Qc2 Qe7=) 10.a4 c6 11.Qb3 Nd7 12.c5 d5 13.b5 e5 14.Rfe1 (14.Qc2 e4 15.Ne1 f5=) 14...e4= 15.Nh4 f5 16.g3 Bf6 17.Ng2 Ng5 18.h4 Ne6 19.a5 Bg7 20.a6 ba6 21.bc6 Rb8 (21...Nf6 22.Qa4=) 22.Qd5 (22.cd7 Rb3 23.dc8N Rc8 24.Nb3 Rb8+–) 22...Nf6 (22...Ne5! 23.Bc3 Rd8+/–) 23.Qa2+/– Kh8 24.Bc3 g5 (24...Nc7 25.Nf4+–) 25.Ba6 f4? (better is 25...Ba6 26.Qa6 Nd5+–) 26.Bc8 Rbc8 27.Qa7 (better is 27.ef4!? gf4 28.Ne4 Nd4 29.Bd4 Ne4+–) 27...Rc7 28.Qb6 (28.Qa4 fg3 29.fg3 Rfc8+–) 28...fg3 (28...Nd5 29.Qb3 Nc3 30.Qc3 f3 31.Ne4 fg2 32.hg5 Ng5 33.Ng5 Qg5+=) 29.fg3+– gh4 30.Nh4 Ng4? (30...Qe8 31.Rf1+–) 31.Nf1 Bf6? 32.Nf5 Qf7 33.Ra2?? Bg5?? 34.Rae2 Qf5+/– 35.d5 Bf6 36.Bf6 Rf6 37.de6+– Rg7 38.c7 Ne5?? 39.c8Q Rf8 40.Qf8! Qf8 41.Rf2 Nf3 42.Rf3! Qf3 43.Qb8 Rg8 44.Qe5 Rg7 45.e7 h5 46.e8Q Kh7 47.Q5h5 Qh5 48.Qh5 Kg8 49.Qd5 Kh8 50.Qe4 Rg3 51.Qg2 Rg2 52.Kg2 Kg7 53.c6 Kf6 54.c7 Ke5 55.c8Q Ke4 56.Qc4 Ke5 57.Rd1 Kf6 58.Rd5 (58.Rd5 Ke7 59.Qc7 Ke6 60.Qc6 Ke7 61.Rd7 Kf8 62.Qc8; 58.Qc6 Kf5 59.Rd5 Kg4 60.Qc4) 1–0. Toll,Anatoly – MacBobs,Luke, Dos Hermanas Internet qual–D, 2009.

5.Nf3 e5 6.d4 e4 (6...a5 7.de5 ab4 8.ef6 Bf6 9.Bf6 Qf6 10.Qd4=) 7.Nfd2 f5 (7...Qe7 8.Qc2+=) 8.Be2 Qe7 9.Qb3 Nc6 10.b5 Nd8 11.Nc3 c6 (11...0–0 12.c5 Ne6 13.0–0+=) 12.a4 Ndf7 13.a5 0–0 14.Ba3 (14.0–0 d6+/–) 14...d6+= 15.a6 (15.0–0 Be6+=) 15...c5 (15...cb5 16.ab7 Bb7 17.Nb5 Rfd8+=) 16.Nd5 (16.dc5 dc5 17.Bb2 ba6=) 16...Qd8 (better is 16...Qg5!? 17.Rg1 ba6+=) 17.Bb2+= cd4 18.ed4 (18.Bd4 Bd4 19.ed4 ba6 20.ba6 Be6+=) 18...ba6= 19.ba6 Be6 20.0–0 (20.Nf4 Bd7+=) 20...Bd5 21.cd5 Rb8 22.Qa3 Qb6 The isolani on d4 becomes a target 23.Nc4 Qb5+= 24.Qa5 Rfc8 25.Qb5 Rb5 26.Ra2 f4 27.Nd2 Rb4 28.Rc1= Rc1 29.Bc1 e3 30.fe3 fe3 31.Nf3 Nf5 The pressure on the isolated pawn grows 32.g4 Nd4 33.Be3 Ne2 34.Re2 Rg4 35.Kf2 Ra4 36.Ba7 Ra6 37.Re8 Bf8 38.Nd4 Ng5?? 39.Nc6= Ra4 40.Bd4 Ra2 41.Kg3 h5 42.h4 Ra3 43.Kf4 Rf3?? 44.Kg5+– Kh7 Threatening mate: Bh6 45.Rf8 Rf8 Threatening mate... how? 46.Bf6 Ra8 47.Kf4 Ra4?? 48.Ke3 Kg8 49.Ne7 Kf7+/– 50.Bg5 Ra5 51.Kd4 Ra4 52.Kc3 Ra5 53.Kc4 Rc5 54.Kb4 Rc7 55.Nc6+– Ke8 56.Bf4 Rb7 57.Kc4 Kd7 58.Bg5 Ke8 59.Nd8 Rb8 60.Ne6 Rb7 61.Nf4 Kf7 62.Ne2 Ke8 63.Nc3 Kd7+/– 64.Ne4 Rb1 65.Bf4 Rh1 66.Bg3 Rc1 67.Kd4 Rd1 68.Kc4 Rc1+– 69.Kd3 Rd1 70.Ke2 Rd4+/– 71.Ke3 Rd1 72.Kf4 Ke7 73.Nc3 (73.Kg5 Rd4 74.Nf6 Rd3+/–) ½–½. Schoenwaelder,Bernd – Schwarz,Ingo, Dortmund op–A, 2003.

5.Nf3 Rg8 6.Be2 (6.d4 d6+–) 6...Nc6 (6...a5 7.b5+–) 7.b5+– Nb4?? (better 7...Ne5+–) 8.a3+– f5 (8...Nc6 9.bc6 dc6 10.d4+–) 9.Bg7 (9.ab4?! Bb2 10.Ra2 Bg7+=) 9...Rg7 10.ab4 d6 (10...g5 11.d4+–) 11.0–0 (11.d4 g5+–) 11...e6 (11...g5 12.d4+–) 12.Qb3 (12.d4 g5+–) 12...Qf6 (12...g5 13.d4+–) 13.Nc3 e5 14.Nd5 Qd8 15.c5 dc5 16.bc5 e4 17.Nd4 Be6 (17...a6+–) 18.Ne6 Rd7 1–0. DEFFM – GuestMCSz, freechess.org, 2018.

4.Nf3 d5

5.c4 c6 6.b5 Nh6 7.Nc3 e6 (7...0–0 8.Ba3+–) 8.Be2 (8.bc6 Nc6 9.cd5 ed5+–) 8...0–0 9.Qb3 Nf7 10.0–0 Nd6 (10...Nd7 11.d4+–) 11.bc6 (11.cd5 cd5 12.Ba3 Re8+–) 11...bc6 (11...dc4 12.cb7 Bb7 13.Bc4 Nc4 14.Qc4+=) 12.cd5 cd5 13.Nd5 ed5 14.Qd5 Nf7?? (better 14...Rf7 15.Ba3 Bf8 16.Bd6 Bb7+=) 15.Qa8+– Qd2 (15...Qd6+–) 16.Nd2 (16.Nd2 Be6 17.Bc4 Bc4 18.Nc4+–) 1–0. GuestWVGP – GuestDNNN, freechess.org, 2019.

5.c4 Be6 6.cd5 Bd5 7.Nc3 Bf7 8.Ne4 b6 (better 8...Nh6!? 9.Qa4 Kf8+–) 9.Qc2+– Bd5 10.Bc4 e6 (10...Qd7 11.Neg5! e5 12.Bd5 Qd5 13.Ne4+–) 11.Rc1 c6 (11...Nh6 12.Neg5! Qe7 13.Bd5 ed5 14.Qc7 Qc7 15.Rc7+–) 12.b5 c5 (12...Qd7 13.0–0+–) 13.d4 f5?! (13...Nd7+–) 14.Neg5 Bf3 (14...Nf6+–) 15.Ne6 (15.gf3?! Qg5 16.Be6 Nd7 17.dc5 Bb2 18.Qb2 Qf6 19.Bd7 Kd7 20.c6 Ke7=; 15.Nf3 Nd7 16.Be6 Qe7 17.Bd7 Qd7 18.dc5 Nf6+–) 15...Qe7 16.gf3 cd4 (16...Nd7+–) 17.Bd5 Nh6 (17...Nd7 18.Nc7 Kf8 19.Ne6 Kf7 20.Nd4 Ke8 21.Ba8 Nc5+–) 18.Qc8 Kf7 19.Nd4 Kf6 20.Ne6 Kf7 21.Ng5 1–0. Jan Ek – Saxxa, freechess.org, 2019.

5.c4 Bg4 6.cd5 Qd5 7.Nc3 Qd6 8.b5 Bf3 (8...e5!?+=) 9.Qf3+– (worse 9.gf3 e5=) 9...c6 10.Ne4 Qd5 11.Rc1 (11.bc6 bc6 12.Be2 Nd7+–) 11...Nh6 (better 11...Qa2 12.Bd4 Nh6+=) 12.bc6+– Nc6?? (better 12...bc6 13.Bc4 Qf5+–) 13.Nf6! Bf6 (13...ef6 14.Qd5 Discovered attack; 13...Bf6 14.Qd5 Discovered attack) 14.Qd5 Bb2 15.Rb1 Bf6 (15...Rd8 16.Qe4 Bf6 17.Rb7+–) 16.Rb7 Rd8 (16...Nd8 17.Rb1 Nb7 18.Rb7+–) 17.Qc6 Kf8 18.d4 Nf5 (18...Kg7 19.Ra7 Rb8 20.Bd3+–) 19.g4 Nd6 (19...Nh6 20.Qe6 Rd6 21.Qe4+–) 20.Ra7 Rc8 21.Qd5 Rc1 (21...h6 22.h4 Rc1 23.Kd2+–) 22.Kd2 Rc8 23.Bd3 Rd8 24.h4 White plans g5 24...Kg7 25.g5 Nb5 26.gf6 Kh6 (26...Kf8 27.Qd8 Kf7 28.Qe7 Kg8 29.Bc4) 27.Qg5 1–0. Janek – Lfwbmt, internet, 2019.

5.c4 Nh6 6.cd5 Qd5 7.Nc3 Qd8 8.Be2 0–0 9.Qb3 Kh8 10.0–0 Nf7 11.Rac1 c6 (11...a6!?+/–) 12.d4+– White prepares the advance b5 12...e6 13.b5 cb5 14.Nb5 Na6 (14...Nc6 15.Rfd1+–) 15.a4 Nd6 (15...Bd7 16.h4+–) 16.Nd6 Qd6 17.Ba3 Qd7 18.Bf8 Bf8 19.Rc3 Qe7 (19...Nb4 20.e4+–) 20.Rfc1 Qd7 (20...Qd8+–) 21.Ba6 ba6 22.Qc2 Bb7 23.Rc7 Qd5 24.Rb1 Rb8 (24...Qe4 25.Rbb7 Qc2 26.Rc2+–) 25.e4! Qe4 (25...Qd8 26.Rbb7 Rb7 27.Rb7 g5+–) 26.Qe4 Be4 27.Rb8 Kg8 28.Rcc8 Bd5 29.Rf8 Kg7 30.Rfc8 Kh6 31.Rc7 1–0. pierred – anony, internet, 2015.

5.Be2 e5 6.0–0 Nc6 7.b5 Nb8 (7...Nce7 8.d4 e4 9.Nfd2+=) 8.a4 Bd7 (8...Ne7 9.d4+=) 9.Ne1 (9.c4 Be6+–) 9...Ne7 10.f4 ef4 (10...e4 11.Nc3+=) 11.Rf4+= 0–0 12.Rf1 (12.Nd3 a6 13.Nc3 f5+=) 12...c6 13.Na3 cb5 (13...a6 14.c4+=) 14.ab5 f5 (14...a6 15.c4+=) 15.Bg7+– Kg7 16.Rb1 b6 17.c4 (better 17.Nd3+–) 17...dc4? (17...Be6 18.Bf3+=) 18.Bc4?? (18.Bf3 Nbc6 19.bc6 Bc6 20.Nc4 Rf6+–) 18...Ng8?? (18...a5 19.Qf3 Ra7 20.Nec2+–) 19.Qb3 (19.Qf3 Qe7 20.Nec2 Bb5 21.Nb5 Nd7+–) 19...Qf6? (19...Nf6 20.Bd5 Bb5 21.Ba8 Bf1 22.Kf1 Qd2 23.Rb2+–) 20.Nf3?? (20.Bd5 Nc6 21.bc6 Bc6 22.Bc6 Qc6+–) 20...Be8? (better 20...a5+–) 21.Nd4+– Bf7 (21...Nd7 22.Ne6 Kh8 23.Nf8 Qf8+–) 22.Ne6 (better 22.Bf7 Nd7 23.Bd5+–) 22...Be6+– 23.Be6 Ne7 (better 23...a5 24.ba6! Ne7+–) 24.e4?? (better 24.Bd5 Nd7 25.Ba8 Ra8 26.Nc4+–) 24...Qd4+= 25.Qe3 (25.Kh1 fe4 (worse 25...Qe4 26.Rfe1 Qb7 27.Bc4+–; 25...Qd2 26.ef5 a5 27.f6 Rf6 28.Rf6 Kf6 29.Qf3 Nf5 30.Qa8 Ke6 31.Qb8+–) 26.Nc2 Qe5+–) 25...Qe3= 26.de3 Kf6 (26...Rf6 27.Bd5 Nd5 28.ed5=) 27.Bb3 (27.ef5!? gf5 28.Bf5 Nf5 29.Rf5 Kf5 30.Rf1 Ke4 31.Rf8+–) 27...Nd7 28.ef5 gf5 29.Rbd1 Ne5 30.Rd6 Kg5 31.h4 (31.Nc2!? Rfd8 32.Rd8 Rd8 33.Nd4+–) 31...Kh4= 32.Rh6 Kg5 33.Rh7 Rh8?? (better 33...Rfe8=) 34.Re7+– Rh6 (34...Rhe8 35.Rg7 Kf6+–) 35.Re5 Rah8 (35...Rf6 36.Bd5 Rc8 37.e4+–) 36.Bd5 (36.Ref5 Kg6 37.Rf6 Kg5 38.R1f5 Kh4 39.Rh6 Rh6 40.Bd1 Rh7 41.Kh2 a5 42.g3) 36...Rh1 37.Kf2 Rf1 38.Kf1 Rh1 (38...Kf6 39.Re6 Kg5 40.Nc4+–) 39.Kf2 Ra1 (39...Kf6 40.Re6 Kg5 41.Nc4+–) 40.Nc2 (40.Nc2 Rd1 41.Ke2+–) 1–0. Akrapovik (1690) – lasha_tbilisi (1755), lichess.org, 2021.

5.Be2 e5 6.0–0 e4 7.Nd4+= b6 (7...f5 8.Bb5 Kf7 9.f3+=) 8.Bb5 (better 8.c4+–) 8...c6? (better 8...Kf7+–) 9.Nc6+– Nc6 10.Bc6 Ke7 (10...Bd7 11.Ba8 Qa8+–) 11.Ba8 Ba6 12.b5! Bb5 13.Ba3 Ke6 (13...Kf7 14.Nc3 Bc4 15.d3 Qa8 16.dc4+–) 14.Nc3 Bf1 (14...Qa8 15.Nb5 Kd7+–) 15.Bd5 (15.Qf1?! Qa8 16.Qb5 Nh6+–; 15.Kf1?! Qa8 16.Nb5 Qb8+=) 15...Kd7 16.Qf1 f5 (16...Qc8 17.Qb5 Kd8 18.Bg8 Qd7+–) 17.Qb5 Kc8 18.Qc6 Qc7 19.Be6 Kb8 20.Bd6 Qd6 (20...Be5 21.Qc7 Ka8 22.Bd5) 21.Qc8 1–0. Pierre – VerianM, internet, 2020.

4.Nf3 d6

5.a3 Nc6 6.Be2 Be6 (6...e5 7.0–0+=) 7.c4 (7.d4 d5+/–) 7...Qd7 (7...d5 8.cd5 Bd5 9.Nc3+=) 8.d3 (8.d4 Bg4+/–) 8...Nh6 9.Nbd2 Nf7 10.d4 b6?? (better is 10...Bg4+/–) 11.d5+– Nce5 12.de6 Qe6 13.Ne5 (13.Nd4 Qc8 14.f4 c5 15.fe5 cd4 16.ef6 Bf6 17.ed4 0–0+–) 13...Ne5 14.Nf3 Nf3 (14...Nc4 15.Nd4 Nb2 16.Ne6 Nd1 17.Nc7 (17.Ng7?! Kf7+–; 17.Kd1?! Kf7 18.Nc7 Rad8+–; 17.Rd1?! Rc8+–; 17.Bd1?! Rc8+–) 17...Kd8 18.Na8+– (18.Rd1 Kc7 19.Rc1 Kd7+=)) 15.Bf3 Rb8 16.0–0 (16.Qa4 Kf8+–) 16...Qc4 (16...Qd7 17.b5 0–0 18.Bc6+–) 17.Rc1 Qe6 18.Rc7 0–0 (18...a5+–) 19.Bd5 Qd5 20.Qd5 Rf7 21.Re7 Rbf8 22.Rf7 Rf7 23.Rc1 h5 (23...h6 24.Rc7 Kh7 25.Qf7 d5 26.Qg7) 24.Rc8 (24.Rc7 Kh8 25.Qf7 d5 26.Qg7) 24...Kh7 (24...Bf8 25.Bf6 a5 26.Rf8 Kf8 27.Qa8) 25.Qf7 Kh6 26.Rg8 Kg5 27.Rg7 Kh4 (27...Kf5 28.Qg6 Ke6 29.Qe4) 28.Qf6 g5 29.Qg5 1–0. Fournier,Frederic (2070) – Delacour,Charles (1795), Active (5/0), 2004.

5.Nc3 Bg4 6.Be2 e6 7.0–0 Ne7 8.h3 Bf3 9.Bf3 a6 (better 9...Nbc6!?+=) 10.Bb7+– Ra7 11.Bf3 d5 12.Ne2 0–0 13.Nf4 Qd7 14.c4! Nbc6 (14...dc4 15.Bd4 Combination) 15.cd5 ed5 16.Qb3 Kh8 (16...Rd8 17.d4+–) 17.Rfc1 Rb8 18.Nd5 (18.Bd5?! Rb4 19.Bc6 Nc6+–) 18...Nd5 19.Qd5 (worse 19.Bd5 Rb4 20.Bc6 Rb3 21.Bd7 Rb2+–) 19...Qd5 20.Bd5 Nb4 21.Bd4 Nd5 (21...c5 22.Bc5 Rd7 23.Be6+–) 22.Ba7 Rd8 23.Rab1 f5 (23...Bf8 24.e4 Nb4 25.a3+–) 24.Rb8 Rf8 (24...Rb8 25.Bb8 Bf8 26.Bc7+–) 25.Rc5 Nb6 (25...Rb8 26.Bb8 (26.Rd5?! Rb1 27.Kh2 h5+–) 26...Nb4 27.Bc7+–) 26.Rf8 Bf8 27.Rc7 Nd5 28.Rd7 Nb4 29.Rd8 Kg7 30.Rf8! Kf8 31.Bc5 Kf7 32.Bb4 Ke6 33.Kh2 Kd5 34.Kg3 Kc4 35.Bc3 Kb5 36.d3 a5 (36...Ka4 37.d4 Kb5 38.f3+–) 37.Kf4 a4 (37...Ka4 38.d4 h6 39.d5+–) 38.Kg5 a3 39.Kh6 g5 40.Kg5 f4 41.ef4 h6 42.Kh6 Kc5 43.f5 Kd5 44.Kg7 Kd6 45.f6 Ke6 46.f7 Ke7 (46...Kd7 47.f8Q Kc6 48.Qc8 Kb6 49.Bd4 Kb5 50.Qc5 Ka4 51.Qc6 Kb4 52.Bc3) 47.f8Q Ke6 48.Qd8 Kf5 49.Qf6 1–0. pcmvr – vaingrecsky (2175), net–chess.com, 2016.

5.c4 c6 6.Qb3 e6 (6...Bg4 7.e4+=) 7.Be2 Ne7 8.Nc3 0–0 9.0–0 d5 (9...a5 10.b5+=) 10.d4 dc4 11.Bc4 Nd5 12.b5 Bd7 13.bc6 (13.e4 Nc7 14.a4+–) 13...Bc6+– 14.e4 Nc3 15.Be6 (worse 15.Qc3 Qd7 16.d5 ed5 17.ed5 Bb5+–) 15...Kh8 16.Qc3 Be4 17.Ba3 Re8 18.Bf7 Bf3 (18...Nc6 19.Be8 Qe8 20.Rfe1+–) 19.Qf3 (19.Be8?! Bg2 20.Kg2 Qe8+–) 1–0. GuestGMLC – GuestHNZX, freechess.org, 2018.

5.c4 c6 6.Be2 e5 7.0–0 Ne7 8.Nc3 Be6 9.d4 Nd7 (9...0–0 10.d5 cd5 11.cd5+=) 10.h3 (10.Ne4 Nc8+–) 10...Qc7 11.Rc1 (11.d5 Bf7 12.Qd2+=) 11...d5 (11...0–0 12.d5 Bf7 13.dc6 bc6 14.Ne4+=) 12.cd5 (12.de5 dc4 13.Qd6 Qd6 14.ed6 Nf5+–) 12...Nd5+= 13.a3 (13.Nd5 Bd5 14.de5 Ba2 15.ef6 Bf6+–) 13...Qb8 14.de5 Ne5 15.Qb3?? (15.Nd4 Nc3 16.Bc3 Bd5+–) 15...Nc7?? (better 15...Nf4! 16.Qc2 Ne2 17.Ne2 Nf3 18.gf3 Bh3–/+) 16.Qc2+= Nf7 (16...0–0 17.Nd4+=) 17.Rfd1 (17.Ne4 Qd8+–) 17...0–0 18.Nd4 Nd8 19.Ne6 Nde6 20.Bc4 Re8 (20...f5 21.Rd6 Re8 22.Rd7+–) 21.Qb3 (21.Ne4 Nd5+–) 21...Kf7 (21...f5 22.Rd7 Kf8 23.Ne4+–) 22.Ne4 Re7 23.Nc5 Qc8 24.Rd6 a5 (24...Qe8+–) 25.Rcd1 b5 (25...a4 26.Qa2 Ke8 27.Ne6 Bh8+–) 26.Be6 Ne6 27.Ne6 Kg8 28.Rd8 Re8 29.Rc8 (29.Ng5 Kh8 30.Nf7 Kg8 31.Nh6 Kh8 32.Qg8 Rg8 33.Nf7) 29...Rac8 (29...Kh8 30.Ng7 Rf8 31.Bf6 Rac8 32.Be5 Rf6 33.Bf6 Rf8 34.Ne6 Rf6 35.Rd8 Rf8 36.Rf8) 30.Nc7 (30.Nd8 Kh8 31.Nf7 Kg8 32.Nh6 Kh8 33.Qg8 Rg8 34.Nf7) 30...Kh8 31.Ne8 (31.Ne8 a4 32.Qf7 Rc7 33.Qc7 Bf8 34.Qf7 h6 35.Qf8 Kh7 36.Nf6) 1–0. zabazaba (1660) – jevgeni, gameknot.com, 2014.

5.c4 Bg4 6.d4 Nh6 7.Be2 0–0 8.h3 Be6 9.0–0 Bf7 10.Nbd2 Nd7 11.d5 c6 12.dc6 bc6 13.a3 a6 14.Qc2 c5 15.b5 ab5 16.cb5 Qb6 (16...d5 17.a4+=) 17.Rfb1 f5 (17...d5 18.a4+=) 18.Bg7 (18.Nc4 Qb8+/–) 18...Kg7 19.a4 Ng8 (19...e5!?+/–) 20.a5+– Ra5?? (better is 20...Qb7+–) 21.Ra5 (better is 21.Qc3 e5 22.Ra5+–) 21...Qa5= 22.Nc4 Bc4 23.Bc4 Ngf6 0–1. Fournier,Frederic (1835) – misgaubel (1725), Active (5/0), 2004.

5.c4 Bg4 6.h3 Bf3 7.Qf3 c6 8.b5 e5 9.a4 Ne7 10.d4 0–0 11.d5 (11.Be2 a6+=) 11...cb5 12.cb5 f5 13.e4 (better 13.Qd1=) 13...Nd5?? (better 13...Nd7=+) 14.ed5 (14.Bc4!? Nd7+–) 14...e4 15.Qb3 Bb2 16.Qb2 Nd7 17.Be2 Ne5 (17...f4 18.Bg4 Nc5 19.0–0+–) 18.0–0 (18.Nc3 Rc8 19.a5 Rc5+–) 18...Qg5 (18...f4 19.f3 Qb6 20.Kh2+–) 19.Nd2 Rae8 (19...Rac8 20.f4 ef3 21.Nf3 (21.Bf3?! Qe3 22.Kh1 Nd3=) 21...Qe3 22.Rf2+–) 20.Rfc1 (better 20.Rac1 Rc8+–) 20...Nd3? (20...e3 21.Nf3 Nf3 22.Bf3 f4+–) 21.Bd3 ed3 22.Rc7 Rf7 23.Nf3 Qf6 (23...Qf4 24.Rac1+–) 24.Qf6 Rf6 25.Rd1 (25.Rb7 Rf7 26.Rf7 Kf7+–) 25...Rf7 26.Rf7 Kf7 27.Rd3 (better 27.Ng5 Kg7 28.Ne6 Kf6 29.Rd3+–) 27...Re4 (27...Kf6+–) 28.Ng5 Kf6 29.Ne4 fe4 30.Rc3 Ke5 (30...b6 31.Rc7 Ke5 32.Ra7 Kd5 33.Rh7+–) 31.Rc7 Kd5 (31...b6 32.Rh7 Kd5 33.Ra7+–) 32.Rb7 Kc5 33.Ra7 d5 34.Rh7 d4 35.Kf1 d3 36.Ke1 Kb6 37.Kd2 (37.Kd2+–) 1–0. Abdullaevich (1825) – jaimeTorres (1885), lichess.org, 2020.

5.c4 Nh6 6.h3 (6.d4 0–0+=) 6...0–0= 7.Be2 Nc6 8.b5 Nb8 9.0–0 e5 10.Nh2 (10.d4 Nd7+=) 10...f5 11.f4 e4 12.Bg7 Kg7 13.d4 Nd7 14.d5 (14.Nc3 a6=) 14...Nc5 15.Qd4 Kg8 16.Nd2 g5 (16...a6 17.Nb3=) 17.g3 (17.fg5 Qg5 18.Nb3 f4 19.ef4 Nb3 20.Qe4 Qg7 21.ab3 Bh3+=) 17...Nf7 (17...g4 18.h4=) 18.Bh5 (18.Nb3 b6+=) 18...h6 19.Nb3 Nd3 (19...gf4 20.ef4 (worse 20.Rf4 Nd3=+) 20...b6 21.Nc5 dc5 22.Bf7 Rf7 23.Qc3=) 20.a3 (20.Be2 Qe7+–) 20...gf4 (20...a5 21.ba6 b6 22.Be2=) 21.ef4+= Nh8 (better 21...b6!?+=) 22.Be2+– Qf6 23.Bd3 ed3 24.Qd3 Ng6 25.Rae1 Bd7 26.Nf3 h5 (26...a6 27.Nbd4+–) 27.h4 (27.Nfd4 Rae8+–) 27...Ne7 (27...a6 28.Nbd4+–) 28.Ng5 Rae8 (28...a6 29.Qe2 Nc8 30.Qh5+–) 29.Nd4 Qg7? (29...Rc8+–) 30.Nde6 Qf6 31.Nf8 Rf8 (31...Qf8 32.Qf3+–) 32.Ne6 (32.Qe2 Nc8+–) 32...Be6 33.Re6 Ng6 (33...Qg7+–) 34.Rf6 Rf6 35.Re1 1–0. Abdullaevich (1945) – genb66 (1650), lichess.org, 2019.

5.d4 Nd7 6.c4 a6 7.Nbd2 c6 (7...e5 8.Be2+=) 8.Bd3+– b5 (8...f5 9.0–0+–) 9.c5 (9.Qc2!?+–) 9...dc5+= 10.bc5 (10.Be4 cb4 11.Bc6+=) 10...a5 (10...Nc5 11.Bc2 Ne6 12.0–0=) 11.a4 (11.Qc2 Nh6+–) 11...b4 (11...Nc5 12.Bb5 cb5 13.dc5+=) 12.0–0 (12.Qb3 Nh6+–) 12...Ba6 (12...Nc5 13.Be2 Nb7 14.Rc1=) 13.Qe2 (13.Ba6!? Ra6 14.Rb1+–) 13...Bd3+= 14.Qd3 e5? (14...Nc5 15.Qc4 Nb7 16.Qc6 Qd7 17.Qb6+=) 15.Qe4 (better 15.Ne4!?+–) 15...Ne7+= 16.de5 f5 (16...fe5!? 17.Ne5 Nc5+=) 17.Qc2+– Nd5 18.e6 N7f6 19.Nc4 0–0 20.Nd6 Ne8 21.Bg7 Kg7 22.Rfd1 (better 22.Nc4!?+–) 22...Nd6+= 23.cd6 Qd6 24.Nd4 c5 25.Nb5 (25.Nb3 Qe6 26.Nc5 Qc6=) 25...Qe6 26.Qc5 Rfc8?? (better 26...Rfd8=) 27.Qd5+– Qd5 28.Rd5 b3 (28...Rd8 29.Rd4+–) 29.Rb1 (29.Rd2 Rc2 30.Rc2 bc2+–) 29...b2 30.Rdd1 Rc2 (30...Rc4 31.Rb2 Ra4 32.Nd4+–) 31.Nd4 Rc4 32.Rb2 Ra4 33.Nc6 (better 33.Rb7!? Kf6+–) 33...Rc4 34.Ne5 Rc5 (34...Rc7 35.Ra2+–) 35.Nd3 (better 35.Rb7 Kg8 36.f4 Re5 37.fe5+–) 35...Rc3 36.Ne5 a4?? (better 36...Rc5=) 37.Ra1 (37.Rb7 Kg8 38.Kf1 Rb3+–) 37...a3 (37...Ra7 38.Kf1+–) 38.Rba2 Kf6 39.Nf3 h6 (39...f4 40.ef4 h6 41.Nd4+–) 40.Nd4 g5 41.g3 (41.Kf1 f4 42.Ke2 fe3 43.fe3 g4+–) 41...Ke5 42.Nb5 Rb3 43.Na3 f4 (43...Ke4+–) 44.Nc4 Kd5 45.Ra8 Kc4 46.gf4 gf4 47.ef4 (47.R1a4 Rb4+–) 47...Kd5 48.Kg2 Ke4 (48...Rb7 49.Rd8 Ke4 50.Ra4 Kf5 51.Rd6+–) 49.R8a4 Kf5 50.Rc1 (50.Ra5 Kg6+–) 50...Kg4 (50...Rb6 51.Rc5 Kf6 52.Kf3+–) 51.Rc8 (better 51.h3 Kf5+–) 51...h5 (51...Rb7 52.Rc5 Rg7 53.h3 Kh4 54.Kf3+–) 52.Rg8 (better 52.Rf8 Rb7+–) 52...Kf5 53.Ra5 (53.Rg5 Kf6+–) 53...Kf4 54.Rh5 Ke4 (54...Rb6 55.h3 Ke4 56.Rg4 Kd3 57.Rd5 Kc3 58.h4+–) 55.Rg4 Kd3 56.Rh3 Kc2 57.Rb3 Kb3 58.Re4 Kc3 59.h4 Kd3 60.h5 (60.f3 Kc2 61.h5 Kc1 62.h6 Kb2 63.h7 Kc3 64.h8Q Kb3 65.Qe5 Kc2 66.Rc4 Kd3 67.Qd5 Ke3 68.Re4) 60...Ke4 61.h6 Kf5 62.h7 Kg6 63.h8Q Kf5 64.Kg3 Ke4 If Black now would get f4 in, he might survive 65.Qf6 Kd5 66.Qe7 Kc6 67.f4 Kd5 (67...Kb5 68.f5 Kc6 69.Qe6 Kb5 70.f6 Kc5 71.f7 Kb4 72.f8Q Kc3 73.Qc5 Kd2 74.Qed6 Ke2 75.Qf2) 68.f5 Kc6 69.f6 Kd5 70.f7 Kc6 (70...Kc4 71.f8Q Kd3 72.Qa3 Ke4 73.Qf4 Kd5 74.Qad6) 71.f8Q Kd5 72.Qf4 (72.Qc5 Ke4 73.Qff5) 72...Kc6 73.Qee5 (73.Qc4 Kb6 74.Qec7) 73...Kd7 74.Qff6 (74.Qd6 Ke8 75.Qff8) 74...Kc8 75.Qee7 Kb8 76.Qff8 1–0. Dino_Jarach (1795) – ravi_s_goldstein (1785), lichess.org, 2019.

5.d4 Nd7 6.Nbd2 e5 7.Bc4 Ne7 8.de5 fe5? (better is 8...Ne5!? 9.Ne5 fe5=) 9.Ng5+– Nb6 10.Nf7 Qd7 11.Nh8 Nc4 12.Nc4 Qb5 13.Nd2 Qb4 14.Rb1 Bh8? (better is 14...Qa4+/–) 15.Be5!+– Qg4 (15...de5 16.Rb4; 15...Be5 16.Rb4) 16.Qg4 (worse is 16.Bh8 Qg2 17.Qf3 Qf3 18.Nf3 Be6+–) 16...Bg4 17.Bh8 1–0. Fuchs,Klaus Dieter – Schlagner,Andreas, Karl Mala mem op, 2006.

5.Be2 Bd7 6.c4 e5 7.Nc3 (7.0–0 Ne7+=) 7...Ne7 8.h4 (8.0–0 a5 9.b5 Be6+–) 8...0–0 (8...a5 9.b5+=) 9.h5 g5 (9...Be6 10.a3+–) 10.h6 (10.Qb3 Be6 11.h6 Bh8+–) 10...Bh8+– 11.a3 (11.Qc2 Bf5 12.d3 a6+–) 11...Be8 (11...Nbc6 12.Qb3+–) 12.Bd3 (12.Qb3 Bg6+–) 12...Bg6 13.Bg6 Ng6 14.g4 (14.c5 Nc6+–) 14...Qd7+– 15.Rg1 Nc6 (15...a5 16.Qb3+–) 16.Qc2+– Nce7 (16...Rfe8 17.Kd1+–) 17.Ne4 a6 18.Rc1 (18.a4 d5 19.cd5 Nd5+–) 18...Qe6 19.d3 (19.Qd1 b6+–) 19...b6 20.Ke2 (20.a4 Rfd8+–) 20...c5 (20...d5 21.cd5 Nd5 22.Bc3+–) 21.Bc3 (21.bc5 dc5 22.Qb3 Rfd8+–) 21...Rfd8 (21...cb4!? 22.Bb4 Rfd8+–) 22.bc5+– dc5 23.Rb1 (23.Qb1 Qc6+–) 23...Rd7 24.Qb3 (24.Qa4 Nc8+–) 24...Nc8 25.a4 (25.Qa4 Nge7+–) 25...a5 26.Qb5 (26.Bb2 Nge7 27.Ba3 Rd8+–) 26...Raa7+– 27.Rbd1 (27.Be1 Nge7+–) 27...Nge7 28.Nfd2 (28.Ra1 Rd8+–) 28...Qc6 (28...Rd8 29.f3+–) 29.Qb3 Rd8 30.Ng3 Rad7 (30...Nd6 31.Nde4+–) 31.Nde4 Kf7 (31...Nd6 32.f3+–) 32.Qc2 1–0. Janek – Guttesman, internet, 2017.

5.Be2 e5 6.0–0 Ne7 7.d3 0–0 8.b5 (8.d4 e4 9.Nfd2 f5=) 8...c6 (8...a6 9.a4=) 9.c4 cb5 10.cb5 Qb6? (better 10...Be6!?+=) 11.Qb3+– Kh8 12.d4 e4 (12...a6!?+–) 13.Nfd2+– d5 (13...f5 14.Nc3+–) 14.Nc3 Be6 15.Ba3 Re8 16.Be7 Re7 17.Nd5 Bd5 18.Qd5 f5 (18...Nd7 19.Rac1+–) 19.Rfc1 (19.Rac1 Nd7 20.Nc4 Qc7+–) 19...Nd7 20.Nc4 Qe6 (20...Qc7 21.Nd6 Nf6 22.Rc7 Nd5 23.Re7 Ne7 24.g4+–) 21.Qb7 Nb6 (21...Rb8 22.Qa7 Rb5 23.a4+–) 22.Qc6 Qc6 23.bc6 Nc4 24.Rc4 Rc7 25.Rb1 Rac8 (25...Bf8 26.f4+–) 26.d5 (26.f4 Kg8 27.d5 Bf8+–) 26...Be5 27.f4 Bd6 (27...ef3 28.gf3 Re7 29.f4+–) 28.g4 a5 29.Ra4 Bc5 (29...Ra7 30.Rb5+–) 30.Kf2 fg4 (30...Ra8 31.Rb5 Be7 32.Raa5 Ra5 33.Ra5+–) 31.Ra5 g3 (31...Bd6 32.Bg4 Rf8 33.Rb7+–) 32.hg3 Bb6 (32...Bd6+–) 33.Rb6 (33.Rb6 Kg7 34.d6 Rc6 35.Ra7 Kg8 36.d7 Rd8 37.Rc6 Kf7 38.Bg4 g5 39.Rc8 Kg6 40.Rd8 h6 41.Rg8 Kf6 42.d8Q) 1–0. Janek – loser, internet, 2016.

5.Be2 Be6 6.Nd4 Bf7+= 7.0–0 e5 8.Nb3 Ne7 9.Nc3 0–0 10.d4 (10.f4 Nd7=) 10...Nd7 11.Qd2 e4? (better 11...Nb6=) 12.Ne4+– Bh6 (12...Nb6 13.Na5+–) 13.Nc3 (13.Ng3 f5+–) 13...Nd5 (13...Nb6!?+–) 14.Nd5+– Bd5 15.c4 Bf7 16.d5 Re8 17.Na5 Ne5 (better 17...Qb8+–) 18.f4 Nc4 (18...Nd7 19.Nb7 Qe7+–) 19.Bc4 Qd7 (19...Qe7 20.Rfe1+–) 20.Nb7 Re7 (20...Qe7 21.Rae1+–) 21.Bf6 Ree8 22.Rac1 Qf5 23.Bb2 Re7 (23...Bg7 24.Bg7 Kg7 25.Bd3 Qd5 26.Rc7+–) 24.Qd4 Kf8 25.Bd3 Qg4 (25...Qh5 26.Qh8 Bg8 27.e4+–) 26.Qf6 a6 27.Bd4 Re3 (27...Qh5+–) 28.Rc7 Bg7 (28...Qe6 29.de6 Rd3 30.Qf7) 29.Qf7 (29.Be3?! Bf6 30.Bc4 Be7+–; 29.Qg7 Ke8 30.Qf7; worse 29.Rf7 Kg8 30.Qg7) 1–0. Janek – Henry, internet, 2016.

5.Be2 Nh6 6.0–0 0–0 7.d4 Nd7 (7...Nf7 8.c4+=) 8.Nc3 (8.c4 Nf7+=) 8...b6 (8...Nb6 9.Qd3+=) 9.Bc4 (9.Qd3 a6+–) 9...Kh8 (9...Nf7 10.Bd5 Rb8 11.Qd3+–) 10.Qd3 (10.Bd5 Rb8+–) 10...c6+= 11.b5 d5 (11...Bb7 12.a4+=) 12.Bb3+– Bb7 (12...Nb8!?+–) 13.bc6+– Bc6 14.Bd5 (14.Nd5 f5+–) 14...Bd5 (14...Rc8 15.Rab1+–) 15.Nd5+– Re8 16.Rfd1 e5 (16...e6 17.Nf4+–) 17.de5 Ne5 18.Ne5 (18.Be5 fe5 19.e4 Rf8+–) 18...fe5 19.a4 (19.Rd2 Qh4+–) 19...Qg5 (19...Qh4 20.f3+–) 20.a5 (20.e4 Red8+–) 20...Rad8 (20...ba5 21.e4+–) 21.f3 (21.ab6 ab6 22.e4 Qh4+–) 21...e4 (21...Rf8 22.ab6 ab6 23.e4+–) 22.Bg7 Kg7 23.Qd4 Kg8 (23...Qe5 24.ab6 ab6 25.Ra7 Nf7 26.fe4 Qd4 27.Rd4+–) 24.fe4 (better 24.f4 Qd5 25.Qd5 Rd5 26.Rd5+–) 24...Re5 (24...Rd6+–) 25.Nf6! Qf6 26.Qd8 Kg7 (26...Qd8 27.Rd8 Kf7 28.ab6 ab6 29.Ra7 Re7+–) 27.Rd7 Nf7 28.Qf6 Kf6 29.Rf1 Ke6 30.Rff7 ba5 (30...Ra5 31.Ra7 Ra7 32.Ra7+–) 31.Ra7 (31.Rh7 Rb5+–) 31...Re4 (31...Rc5+–) 32.Rfe7 (32.Rfe7 Kd5 33.Ra5 Kc6 34.Re4+–) 1–0. Janek – bitsky, internet, 2017.

4.Nf3 e5

5.b5 Ne7 6.c4 0–0 7.Be2 c5 (7...a6 8.ba6 Na6 9.Nc3=) 8.Nc3 a6 9.a4 (9.d4 d6+=) 9...ab5 (9...f5 10.d3=) 10.ab5+= Ra1 11.Qa1 d5 (11...d6 12.d4+=) 12.cd5+– b6 13.Qa7 Nd7 14.d6 Nf5 15.Bc4 Kh8 16.Ne4 Nh6 17.Rg1 (17.d3 Nf7 18.Qc7 f5 19.Qd8 Nd8+–) 17...f5 (better 17...Nf7!? 18.Qc7 Qe8+–) 18.Neg5+– Qf6 19.Ne6 (19.Be6 Nf7 20.Nf7 Rf7+–) 19...Re8 20.Nfg5 (20.Qc7 Nf7+–) 20...f4 21.g4 (worse 21.Ng7 Kg7 22.h4 fe3 23.de3 Ng4+–) 21...fg3 22.Rg3 (worse 22.fg3 Nf5 23.Rf1 h6+–) 22...Nf5 23.Rh3 h6 (23...h5 24.Rf3 Rg8+–) 24.Qc7 (24.Ng7?! Kg7 25.Ne4 Qf8+–) 24...Nf8 (24...h5 25.e4 Nd6 26.Qd6 Qe7+–) 25.Nf7 Kh7 (25...Kg8 26.Ng7 Kg7 27.Be5 Re5 28.Ne5 Bd7 29.Nd7 Qd6 30.Nf8 Qc7 31.Ne6 Kh7 32.Nc7 Nd6+–) 26.Neg5 Qg5 27.Ng5 Kh8 28.Qf7 (28.Qf7 Be6 29.Ne6 Ne6 30.Qe8 Nf8 31.Qf7 Ne6 32.Be6 Ne7 33.Rh6 Bh6 34.Be5 Bg7 35.Qg7) 1–0. Janek – Gustave, internet, 2016.

5.c4 d5 6.cd5 Qd5 7.Nc3 Qd8 8.d4 e4 (better is 8...Nc6!?+=) 9.Ne4+– f5 (9...Bf5 10.Qa4 c6 11.Bd3+–) 10.Nc5 b6 11.Nb3 c5? (better is 11...a6+–) 12.bc5 bc5 13.Nc5 Ne7 14.Bc4 Nd7 (14...Qa5 15.Qd2 Qd2 16.Nd2+–) 15.Nd7 (better is 15.Ne6 Qa5 16.Qd2 Qd2 17.Kd2+–) 15...Bd7 16.0–0 Rc8 17.Qb3 a6 18.Bf7 Kf8 19.Bc4 Bb5 20.Bb5 ab5 21.Rfc1 Rc1 22.Rc1 Nd5 23.Ba3 Kf7 24.Rc5 Ke6 25.Ng5 Kf6 26.Rd5 Qa5 27.Bb4 Qa6 28.Nf3 Rc8+– 29.Rd6 Qd6+/– 30.g3 Rc1 31.Kg2+/– Qc6 32.Bc5 Rc5 33.dc5+– Qc5?? 34.Nd4 Qd6 35.Qb5 Kg5 36.h4 Kh6 37.Qc6 Qb4 38.Ne6 Qe4?? 39.Qe4 fe4 40.Ng7 Kg7 41.a4 Kf7 42.a5 Ke7 43.a6 Kd7 44.a7 1–0. Fournier,Frederic (1840) – ELCLOWN (1710), Active (5/0), 2005.

5.c4 d6 6.Be2 Ne7 7.0–0 0–0 8.h3 (8.d4 a5 9.b5 Be6+=) 8...c6 (8...e4 9.Ne1=) 9.a4 (9.d4 e4 10.Nfd2 f5=) 9...d5 10.b5 Bf5 (10...Be6 11.cd5 cd5 12.d4=) 11.cd5 cd5 12.Qb3 Kh8 13.d3 Qd7 (13...Nd7 14.Rc1+=) 14.Nbd2 a6 15.e4 (15.d4 e4 16.Nh2 Be6+=) 15...de4 (15...Be6 16.Qb4=) 16.Ne4 (16.de4!? Be6 17.Qe3+=) 16...Be6= 17.Qb4 ab5 (17...Nd5 18.Qd2=) 18.ab5 Ra1 19.Ra1 b6 20.d4 ed4 21.Bd4 Bd5 (21...Nd5!? 22.Qd6 Kg8+=) 22.Bb6 Be4 23.Ra7?? (better 23.Qe4 f5 24.Qa4+–) 23...Bb7–/+ 24.Bc5 (24.Qd4 Nc8 25.Qd7 Nd7 26.Rb7 Ncb6–+) 24...Nd5–+ 25.Qa5 (25.Qd2 Rc8 26.Bd4 Kg8–+) 25...Re8 (25...Rc8 26.Bf1–+) 26.Bc4 (26.Qd2 Qc8–+) 26...Nf4 (26...Rc8 27.Qa3–+) 27.Qb6 (better 27.Be3!? Qc8 28.Bf4 Qc4 29.Rb7 Qf4 30.Qa7–/+) 27...Qd1–+ 28.Kh2 Bf3 29.gf3 (29.Qc7 Nh5 30.Qf7 Rc8=+) 29...Qf3 (29...Nd7 30.Qc6 Re1 31.Qc8 Bf8 32.Qd7 Rh1 33.Kg3 Nh5 34.Kh4 Qd7 35.Rd7 Bc5 36.f4 Rg1 37.Rd8 Kg7 38.Rg8 Kh6 39.Rg6 hg6 40.b6 Bf2) 30.Bf1 Nd5?? (better 30...Ne6 31.Re7 Qf4 32.Kg1 Re7 33.Be7 Nf8–+) 31.Qb7–/+ Ne7?? (better 31...Qf4 32.Kh1 Ne7 33.Be7 Qf2=+) 32.Qf3+– (32.Qf3 f5 33.Re7 Re7 34.Be7 Be5 35.Kg2 Nc6 36.Qc6 Kg7 37.Qc5 Bd6 38.Qd6 Kh6 39.Bf8 Kh5 40.Be2 Kg5 41.Qe7 Kf4 42.Qe3) 1–0. Abdullaevich (1820) – Cavemansmoon (1835), lichess.org, 2019.

5.c4 Ne7 6.Be2 0–0 7.0–0 c6 8.b5 d5 9.a4 Be6 10.c5 Nd7 11.Qc2 Rc8 12.bc6 (12.d4 b6=) 12...Rc6=+ 13.d4 b6 14.Ba3 bc5 15.dc5 Qc8 (15...a6 16.Rc1=+) 16.Bb5= Rc7 17.Bd7 (17.c6 Nb8 18.Bd6 Rc6 19.Bc6 Qc6 20.Qc6 Nbc6=) 17...Bd7 (17...Qd7 18.Nc3=+) 18.Rc1 Bc6 19.Nbd2 f5 (19...Qa6 20.Bb2=+) 20.Rab1 Qa6 Attacking the isolated pawn on a4 21.Rb4 Rfc8 22.Qb3 Kh8 (22...Bd7=+) 23.Rb8?? (23.Bb2 d4 24.ed4 Bd5=) 23...Ng8 (23...Ba4 24.Rc8 Rc8–/+ (24...Nc8?! 25.Qd5 Rd7 26.Qc4=)) 24.Rb4 (24.Bb2 Re7= (worse 24...Ba4 25.Rc8 Rc8 26.Ne5+–)) 24...Nf6 (24...e4 25.Nd4 Be8 26.Nb5 (26.Qd5? Bf7 27.Qd6 Qd6 28.cd6 Rc1 29.Bc1 Rc1 30.Nf1 a5–+) 26...Rc5 27.Rc5 Rc5 28.Re4 de4 29.Bc5=) 25.h3 (better 25.Ne5!? Be8 26.Bb2 Rc5 27.Rc5 Rc5 28.Nd3+=) 25...Nd7=+ 26.Rh4 (26.Qc2 Kg8=+) 26...Ba8 (26...Rb7 27.Rb4 Rb4 28.Bb4 Qa4 29.Qa4 Ba4 30.Ra1–/+) 27.Ng5 h6 28.Nf7 Kh7 29.Ng5 Kg8 30.Ngf3 (30.c6 Nf6 31.Ne6 Rc6 32.Rc6 Qc6 (worse 32...Rc6 33.Ng7 Qc8 34.Nf5 gf5 35.Rh6+–) 33.Ng7 Kg7–/+) 30...Nc5 (30...e4 31.Nd4 g5 32.Nf5 gh4 33.Ne7 Kh7 34.Nc8 Qc8 35.Qc2–+) 31.Bc5 Rc5 32.Rc5 Rc5 33.Qb8? (better 33.Rb4!? Rc1 34.Kh2–/+) 33...Rc8 34.Qb4 (34.Qb5 Qb5 35.ab5 d4 36.ed4 g5–+) 34...Qe6 (34...e4 35.Nd4 g5 36.Rh5 Rc1 37.Kh2 Be5 38.g3 Bd4 39.ed4–+) 35.Qb3 (35.Qa5 e4 36.Nd4 Bd4 37.ed4 g5–+) 35...Qb6 (better 35...e4!? 36.Nd4 Qe7 37.Rf4–+) 36.Rb4 (36.Qb6 ab6 37.Rb4 Rb8–/+) 36...Qd6 37.a5 (37.Qb1 Bc6–+) 37...Bf8 38.Rh4 Kg7 (38...Rc1!? 39.Nf1 e4 40.N3d2–+) 39.Qb2 Kf6 (39...Be7 40.Ra4 Bf6 41.Ra1–+) 40.Nb3 (40.Ra4 Qc7 41.Nf1 Bd6–+) 40...Re8 (40...Bc6 41.a6–+) 41.Nbd2 (41.Ra4!?–/+) 41...Bc6–+ 42.Rb4?? (better 42.g4–+) 42...Qb4 43.Qb4 (43.Qc1 Ba4–+) 43...Bb4 44.Nb3 Ba4 (44...Ba4 45.Nc1 Ba5–+) 0–1. Abdullaevich (1905) – chessblitzsky (1930), lichess.org, 2020.

5.Bc4 d5 6.Bb3 Nc6 7.a3 e4 8.Nd4 Nd4 9.Bd4 Nh6 10.c4 (better is 10.Nc3 Nf5 11.Bc5=) 10...Be6 (10...Nf5 11.Bc3 d4 12.Bb2=) 11.Nc3 (better is 11.cd5!? Bd5 12.Nc3 Bb3 13.Qb3+/–) 11...dc4= 12.Bc2 (12.Ba4 c6 13.Ne4=) 12...Qd7 (better is 12...Nf5!? 13.Bc5 b6 14.Be4 bc5 15.Bc6 Bd7 16.Ba8 Qa8–/+) 13.Ne4+= 0–0–0 14.Nc5 (14.Nf6?! Qe7 15.Ne4 Bd4 16.ed4 Bd5+=) 14...Qc6 15.Be4 (better is 15.Ne6 Qe6 16.0–0+=) 15...Qe8?? (15...Bd5 16.Qf3 Be4 17.Qe4 Qe4 18.Ne4 Rd4 19.ed4 Re8–+) 16.Bb7+– (worse is 16.Nb7 Rd4 17.ed4 f5+=) 16...Kb8 17.Qf3 Bd5 18.Bd5 Rd5 19.Qd5 Qd8 20.Qb7 1–0. Fournier,Frederic (1690) – gigabyte, Active (5/0), 2005.

5.Bc4 d5 6.Bb3 Ne7 7.c4 Be6 8.Nc3 (8.cd5 Bd5 9.0–0 Qd6=) 8...c6 (better 8...dc4!? 9.Bc2 0–0–/+) 9.cd5 cd5 10.0–0 0–0 11.e4 Qd7 (11...Kh8 12.Rc1+=) 12.ed5 (12.d4!? ed4 13.Nd4+– (13.Qd4 f5 14.Qd2 fe4+–)) 12...Nd5+= 13.Nd5 (13.d4 Nb4 14.de5 Qf7+=) 13...Bd5= 14.Rc1 Nc6 15.a3 a6 (15...e4 16.Nd4=) 16.Qc2 (16.d4 e4 17.Rc5 Ne7=) 16...Rad8 17.Rfd1 Qf7 (17...e4 18.Ne1 Bh6 19.Bd5 Qd5 20.Qb1=+) 18.Bd5 Rd5 (18...Qd5 19.Qb1=) 19.Qc3 (19.d4!?=) 19...Rfd8=+ 20.d4? (better 20.Qc2!?=+) 20...e4 (20...Bh6 21.Rb1–+) 21.Ne1 (21.Nd2 Nd4 (21...Rd4?! 22.Qc2=) 22.Qe3 f5–+) 21...f5 22.Qc4 Nd4 23.Bd4 Bd4 24.Kf1 Kg7 25.Qc7 (25.Qe2 Be5–+) 25...R8d7 26.Qc4 h5 (26...Be5 27.Qe2–+) 27.Nc2 (27.Qe2!?–/+) 27...Bb2 28.Rd5 Qd5 (28...Qd5 29.Qd5 Rd5–+; 28...Bc1?? 29.Qd4 Kh6 30.Rd7+–) 0–1. GuestRQJW – GuestCYGR, freechess.org, 2018.

5.d4 d6 6.Be2 Be6 7.0–0 Nd7 8.d5 Bf7 9.c4 Qe7 10.a4 b6 11.Nbd2 a5 12.b5 c5? (12...0–0–0 13.Qc2+=) 13.Nb3?? (better is 13.bc6!? Nc5 14.Nb3+–) 13...e4 14.Nfd2 Ne5 15.Re1 Nh6 (15...f5 16.Rb1+=) 16.f3 (better is 16.Ne4!? Nc4 17.Nf6 Bf6 18.Bf6 Qf6 19.Bc4+/–) 16...ef3+= 17.Bf3 (better is 17.Nf3!? 0–0–0 18.Ne5 fe5 19.Rf1+=) 17...Nd3–/+ 18.Re2 Nb2 19.Qc2 Nc4 (better is 19...f5!? 20.Ra2 Qe5–/+) 20.Nc4= f5 21.Rae1 0–0 22.Nb6 Rae8 23.Na5 Ng4 24.Nc6 Qc7 25.a5 Ne5 26.Ne5 Be5 27.Nc4 Rb8 28.b6 Qb7 29.Qd3 Be8 30.Ra2 Bb5 31.Ne5?? (better is 31.Qb3 Bc4 32.Qc4+–) 31...Bd3–/+ (32.Nd3 Qa6–/+) 0–1. valpa – Idris, playchess.de, 2003.

5.d4 d6 6.de5 fe5 7.c4 Ne7 (7...Nf6 8.c5=) 8.Qc2 (8.c5 Bg4=) 8...0–0 9.Nbd2 Nd7 (9...Be6 10.e4=) 10.Be2 Nf6 11.0–0 Bf5 (11...Be6 12.e4=) 12.Bd3 (12.e4 Be6+=) 12...Bd7 13.Ne4 Ne4 14.Be4 Rb8 15.a3 Nf5 16.Bd3 (16.Rad1 Nh4 17.Nd2 Qg5+=) 16...Qe7 17.e4 Nh6 18.Bc1 Bg4 19.Be2 Nf7 20.h3 Bf3 21.Bf3 b6 22.Be3 Nd8 23.Rad1 Ne6 24.Bg4 c5 25.Be6+/– Qe6 26.Qd3 Rfd8 27.b5 Bf8 28.a4 Qc8 29.Qd5+– Kg7 30.Qd2 a6 31.Bh6+– Kg8 32.Qd5 Kh8 33.Bg5 Rd7 34.Qe6 Qe8 35.Bf6 Bg7+/– 36.Bg7 Kg7 37.Qe8 Re8+= 38.Rd5 Ra8 39.Rfd1 ab5 40.ab5 Rad8 41.f3 Kf6 42.Kf2 Ke6 43.Ke3 Ra7 44.R1d2 Ra3 45.Ke2 Rc3–/+ 46.R5d3 Rc4–+ 47.Rb3. Fournier,Frederic (1625) – 69cents, Active, 2008.

5.Be2 d5 6.0–0 Be6 7.a3 c6 8.c4 Ne7 9.Nc3 Nd7 10.cd5= Nd5 11.Qc2 Nc3 (11...a5 12.e4 Nf4 13.d4=) 12.Bc3+= 0–0 13.d4 ed4 (13...Qe7 14.Rad1+=) 14.Nd4 Bf7 15.Rad1 (15.Rfd1 Qe7+=) 15...Qc7 (15...Qe7 16.Rd2+=) 16.e4 (16.Bb2 Rad8+–) 16...Rac8 (16...Rfe8 17.Bb2 a6 18.b5+–) 17.f4 (17.Bg4 Rce8+=) 17...c5 (17...Rfe8 18.f5+=) 18.Nb5 Qb6 19.Rf2 (19.Kh1 cb4 20.ab4 a6+–) 19...cb4+= 20.ab4 (worse 20.Rd7 bc3 21.Nd6 Rc7 22.Rc7 Qc7=+) 20...a6 (20...Rfd8 21.Qb2+=) 21.Nd6 Qc6? (better 21...Rc7+=) 22.Nc8+– Rc8 23.Rc1 (23.Qd3 Qc3 24.Qc3 Rc3 25.Rd7 b5+–) 23...f5 (23...Nb6 24.Qd3+–) 24.e5 Bd5 (24...Bf8 25.Bf3 Qb6 26.Qb2+–) 25.Qd1 Qe6 26.Bd4 (26.Bf3 Nb6+–) 26...Bf8?? (better 26...Rc1 27.Qc1 Bf8+–) 27.Rc8 1–0. Janek – Murad, internet free game, 2017.

5.Be2 d5 6.0–0 Ne7 7.a4 a6 8.c4 c6 (8...e4 9.Ne1=) 9.cd5 (9.d4 e4 10.Nfd2 Be6+=) 9...cd5 (9...Nd5 10.d4 e4 11.Nfd2=) 10.Qb3 (10.d4 e4 11.Nfd2 Be6+=) 10...Be6 (10...Bg4 11.Rc1=) 11.b5 (11.d4 Nec6+=) 11...a5 (11...ab5 12.Bb5 Nbc6 13.d4=) 12.d4+= e4 13.Nfd2 Nd7? (13...Qd7 14.Ba3+=) 14.f3 (14.Ne4 Qb6 15.Nec3 Qd8+–) 14...f5 (better 14...ef3!? 15.Bf3 Rc8+=) 15.fe4+– fe4 16.Qd1?? (better 16.Ne4 Qb6 17.Nc5+–) 16...Nf5= 17.Bg4? (better 17.Qb3!? Qb6 18.Bg4=) 17...Qg5–/+ 18.Rf4?? (18.Bf5 Qe3 19.Kh1 Bf5–/+) 18...0–0 (better 18...Ne3 19.Qc1 h6–+) 19.Qe2–/+ Rae8 20.Ba3?? (20.Ra3 Bd4! 21.Bf5 Bb2 22.Ne4 Qf4 (22...de4?! 23.Be6 Re6 24.Rf8 Kf8 25.Qb2=) 23.Be6 Re6 24.ef4 Ba3–/+) 20...Rf7 (better 20...Nd4 21.Be6 Re6 22.Rf8 Nf8 23.ed4 Bd4 24.Kh1 Ba1 25.Nb3–+) 21.Nc3?? (21.Bf5 Rf5 22.Rf5 Bf5 23.Nc3=+) 21...h5 (better 21...Nd4 22.Qf1 Bg4 23.Rf7 Qe3 24.Qf2 Qc3–+) 22.Bh3?? (22.Bf5 Rf5 23.Rf5 Bf5=) 22...Qh6?? (22...Bd4 23.Bf5 Qf4 24.ed4 gf5 25.Nb3–+) 23.Raf1?? (better 23.Bf5 Rf5 24.Rf5 gf5 25.Bd6+=) 23...Nd4!–+ 24.ed4 Rf4 25.Rf4 (25.Be6 Re6 26.Nd5 Bd4 27.Kh1 Rf1 28.Nf1 Kh8–+) 25...Qf4 26.Be6 Re6 27.Nd5 (27.Nb3 Nf6 28.Bc1 Qc7–+) 27...Bd4 28.Kh1 Qf7 (better 28...Qf2 29.Qf2 Bf2 30.Nf4–+) 29.Nc4 (29.Nb3 Bb6 30.Nb6 Nb6 31.Na5 Na4–+) 29...Nc5 (29...e3 30.Nde3 Nb6 31.Bb2 Bb2 32.Nb2–+) 30.Nce3 (30.Bc5 Bc5 31.Nde3 Qf6–+) 30...Re5 (better 30...Rd6 31.Nc3 Be3 32.Qe3–+) 31.h3 (31.Bc5 Bc5 32.Qd1–+) 31...Rd5 32.Nd5 Qd5 33.Bc1 (33.Qc2 Qb3 34.Qb3 Nb3–+) 33...Na4 34.Bf4 (34.Bd2 Nc3 35.Qe1 Nb5 36.Ba5 Qc4–+) 34...Be5 (better 34...Nc3 35.Qd2 Bb6 36.Qd5 Nd5–+) 35.Be5 Qe5 36.Qc4 Kg7 37.Qa4 b6 38.Qc4 (38.Qd1 e3 39.Qd7 Kh6 40.Kg1–+) 38...Qc5 (better 38...e3 39.Qe2 a4–+) 39.Qc5+– bc5 40.b6 e3 41.b7 (better 41.Kg1 Kf6 42.b7+–) 41...e2–+ 42.b8Q e1Q 43.Kh2 Qe7 44.Qb2 Kh7 45.Qc3 a4 46.Qc4 (46.Kg1 Qd6 47.Qa3 Qd4 48.Kf1 Kg7–+) 46...Qe5 47.Kh1 Qe1 (better 47...a3 48.Qa2 Qc3 49.Qf7 Kh6 50.Qf4 Kg7 51.Qc7 Kg8 52.Qd6–+) 48.Kh2 Qe5 49.Kh1 Qe1 (better 49...a3 50.Qf7 Kh6–+) 50.Kh2= Qe5 ½–½. Akrapovik (1675) – Vyacheslav1941 (1735), lichess.org, 2021.

5.Be2 d6 6.d4 e4 7.Nfd2 d5 (7...f5 8.0–0+=) 8.c4 c6 9.0–0 Ne7 10.cd5 cd5 11.Qa4 Bd7 12.Qb3 a6 13.Nc3 Be6 (13...Bf5!?+–) 14.Nce4! de4 (14...b6 15.Rfc1+–) 15.Qe6 f5 16.Bc4 (16.Nc4 Qd5 17.Nd6 Kf8 18.Qd5 Nd5 19.Nb7 Ke7+–) 16...Rf8 17.a4 (17.Bb3 Nbc6 18.a3 Qd7+–) 17...Qd7 (17...Rf6!? 18.Qe5 Nbc6+–) 18.Rfb1 Qe6 19.Be6 Nbc6 20.Nc4 Nb4 (20...Rd8 21.b5 Na7 22.Na5+–) 21.Nd6 Kd8 22.Nb7 Kc7 23.Bc3 (better 23.Ba3 Rf6 24.Bc4+–) 23...Nd3?? (23...Rf6 24.Bc4 Nbd5 25.Ba5 Kd7 26.Nc5 Ke8+–) 24.Ba5 Kc6 25.Rb6 Kc7 26.Rb3 (26.Rb3 Kc6 27.Rc3 Nc5 28.Rc5 Kb7 29.Rb1 Ka7 30.Rc7) 1–0. GuestSBKR – GuestNHRS, freechess.org, 2018.

5.Be2 Ne7 6.0–0 0–0 7.a4 d5 8.b5 b6 (8...Be6 9.h3=) 9.Nc3 (9.d4 a6+=) 9...c6 (9...Be6 10.a5+=) 10.e4 (10.h4 Be6+=) 10...d4 (10...Bb7 11.Ba3+=) 11.Bc4 Kh8 12.Ne2 c5 (12...Qc7 13.d3+=) 13.Ng3+– a6 (13...a5 14.Qe2+–) 14.h4 (14.Qe2 Bb7+–) 14...Bb7 15.Qe2 f5 (15...Qd6!?+–) 16.Ng5+– ab5 (16...f4 17.Ne6 Qe8 18.Nf8 Qf8 19.Nh1+–) 17.ab5 fe4 (17...f4 18.Ne6 Qc8 19.Nf8 Ra1 20.Ra1 (20.Ba1?! Qf8 21.Nh1 Nc8+–) 20...Qf8 21.Ra7+–) 18.Ne6 Qe8 (18...Qc8 19.Nf8 Qf8 20.Ra8 Ba8 21.Ra1+–) 19.Ra8 Ba8 20.Nc7 d3 (20...Qc8 21.Na8 Nd7+–) 21.cd3 ed3 (21...Qc8 22.Na8 Nd7+–) 22.Qe5 Be5 23.Be5 Rf6 24.Bf6 1–0. Vendelo – Bedlal, internet free game, 2018.

5.Be2 Ne7 6.0–0 0–0 7.d3 Nec6 8.b5 Ne7 9.d4 ed4 (9...e4 10.Nfd2+=) 10.Qd4 Nf5 (10...a6 11.a4+=) 11.Qa4 c6 12.Nc3 cb5 (12...d5 13.Rfd1 Be6 14.e4+–) 13.Nb5 d6 (13...d5!?+–) 14.Rfd1 (worse 14.Na7 d5 15.Nd4 Bd7+–) 14...Bd7 (14...Qe7 15.e4 (15.Na7?! Be6 16.Nd4 Nd4 17.Qd4 d5+–) 15...Nh6 16.Ba3+– (16.Rd6?! Nf7 17.Bc4 Bd7+–)) 15.e4 Nh6 16.Qb3 Kh8 17.Nd6 Qe7? (17...b6+–) 18.Qb7 Bc6 (18...Nc6 19.Nf7! Nf7 20.Rd7 Qe6+–) 19.Qe7 1–0. Adlai – Bcbuub, internet, 2019.

5.Be2 Ne7 6.0–0 d5 7.a3 0–0 8.d3 Be6 9.c4 e4 (better 9...a6!?=) 10.Nd4+– Bf7 11.cd5 Nd5? (better 11...ed3!? 12.Qd3 Nd5+–) 12.de4+– Nb6 13.Qc2 Qc8 (13...N8d7 14.Rd1+–) 14.Nd2 c6 15.a4 a5 (15...Na6 16.Ba6 ba6 17.Rfc1+–) 16.ba5 Ra5 17.Bc3 Rc5 18.N2b3 Rg5 (18...Rc4 19.a5 c5 20.Nb5+–) 19.f4 Rh5 (19...c5 20.fg5 cd4 21.ed4+–) 20.Bh5 gh5 (20...c5 21.Nf5! gf5 22.Bf7 Rf7 23.a5+–) 21.Nf5 Nc4 (21...Qc7+–) 22.Ne7 Kh8 23.Nc8 Ne3 24.Qb2 Rc8 25.Bf6 Bf6 26.Qf6 Kg8 27.Qg5 Kf8 28.Qc5 Kg7 29.Qe3 b6 30.Qc3 Kg8 31.Nd4 c5 32.Nf5 Kf8 33.Qh8 Bg8 34.Qg7 Ke8 35.Qe7 1–0. Janek – Freeday, internet, 2018.

5.e4 b5? 6.Bb5 a6 (6...Nc6 7.d4+–) 7.Bc4 Nc6 8.0–0 Nb4 9.d4 ed4 10.Bd4 Nh6 (10...Ne7 11.Nc3+–) 11.e5 Ng4? (11...fe5 12.Ne5 d5+–) 12.Re1 Nc6 (12...f5 13.h3 Qe7+–) 13.ef6 Nce5 14.fg7 d6 15.gh8Q Kd7 16.Ne5 Ke7 (16...Ne5 17.Be6! Kc6 18.Bd5 Kd5 19.Re5 de5 20.Qe5 Kc6 21.Qf3 Qd5 22.Qed5) 17.Qg7 Ke8 18.Qf7 1–0. GuestYZBW – milashov, freechess.org, 2019.

5.e4 Ne7 6.Nc3=.

5.e4 Nh6 6.Bc4 Nf7 (6...Nc6 7.a3+=) 7.0–0 (7.Nc3 Nc6 8.a3 f5+=) 7...0–0 (7...Nd6 8.Bd3+=) 8.d4 Re8 (better 8...Qe7!?+=) 9.de5+– fe5 10.Qd5 Qe7 (10...Re6 11.Qd3 d6 12.Be6 Be6 13.Nc3+–) 11.Ng5 Rf8 12.Nf7 Rf7 13.b5 (13.f4 Nc6 14.Qf7 Qf7 15.Bf7 Kf7+–) 13...d6 14.f4 Nd7?? (better 14...c6 15.Qf7 Qf7 16.Bf7 Kf7+–) 15.fe5 (15.Qf7?! Qf7 16.Bf7 Kf7+–) 15...de5 (15...Ne5 16.Be5 Be5 17.Rf7 Qe6 18.Rc7 Kh8+–) 16.Rf7 Qf7 (16...Qc5 17.Qc5 Nc5 18.Rc7 Be6 19.Rc5 Bc4 20.Rc4 Rb8+–) 17.Qf7 Kh8 18.Qg8 1–0. DEFFM – GuestMSVX, freechess.org, 2018.

4.Nf3 e6

5.c4 b6 6.b5 Bb7 7.g3 d6 8.Bg2 c6 9.Nc3 c5 10.0–0 Ke7 (10...d5 11.cd5 ed5 12.d4+–) 11.d4 Nh6 12.dc5 dc5 13.Qc2 Nd7 14.Ne4 e5 15.Rfd1 Qc7 (15...Nf7 16.Nc3 Nd6 17.Qd3+–) 16.Nd6+– Rab8 17.Nb7 Rb7 18.Bh3 f5 19.e4 Rd8 20.ef5 gf5 21.Bf5 Nf5 22.Qf5 Rf8 23.Qh7 Rf7 (23...Rf3 24.Qg7 Rf7 25.Qg5 Kf8+–) 24.Ng5 Nf6 (24...Nf8 25.Qe4 Ne6 26.Nf7 Kf7+–) 25.Qf5 Kf8 (25...Qb8 26.Be5 Qe8 27.Bf6 Bf6 28.Re1 Kf8 29.Re8 Ke8 30.Qc8 Bd8 31.Nf7 Kf7 32.Qb7 Be7 33.Re1 Kg7 34.Qe7 Kg8 35.Qd7 a6 36.Re8) 26.Ne6 (26.Ne6 Kg8 27.Nc7+–) 1–0. Gwda – Terezja, internet, 2017.

5.c4 b6 6.Nc3 a6 7.Be2 Ne7 8.0–0 c6 9.d4 Bb7 (9...d6 10.c5+–) 10.Qc2 (10.c5 d6+–) 10...0–0 11.Bd3 d6 12.Qd2 (12.c5 Nd5 13.Qb3 Nd7+–) 12...e5 (better 12...c5 13.bc5 dc5+=) 13.Ne4 (better 13.c5!?+=) 13...d5=+ 14.cd5 Nd5?? (better 14...cd5 15.Nf6 Rf6 16.de5 Rf8=+) 15.de5+– Bc8? (better 15...fe5!? 16.Be5 Be5 17.Ne5 Qe7+–) 16.ef6+– Nf6 17.Nf6 (17.Bc4!? Nd5 18.Nd4 Bd7+–) 17...Bf6 18.Bf6 Qf6 19.Bc4 Be6 20.Be6 Qe6 21.Rfd1 Re8 22.Qd6 Ra7?? (22...Qd6 23.Rd6 a5 24.b5 cb5 25.Rb6+–) 23.Qd4 (better 23.Qe6 Re6 24.Rd8 Kg7 25.Rb8+–) 23...Rb7 (23...c5 24.bc5 Rd7 25.Qb4 bc5 26.Qc5 Qa2 27.Qc1 (27.Ra2?? Rd1 28.Ne1 Re1) 27...Rd1 28.Qd1+–) 24.a4 Qd5? (better 24...a5!?+–) 25.Qd5+– cd5 26.Rd5 Nc6 27.Rb1 Re4 (27...Ne7 28.Rd2 b5+–) 28.Rd6 (better 28.b5 ab5 29.ab5+– (worse 29.Rdb5 Ra4 30.Nd2 Na5+–)) 28...Nb4?? (28...Rb4 29.Rb4 Nb4 30.e4+–) 29.Nd4 (better 29.Nd2 Rbe7 30.Ne4 Re4 31.Rb6+–) 29...a5 30.Kf1 Kf8 31.Ke2 Ke7 32.f3 (32.Nb5 Rh4+–) 32...Rh4 (better 32...Re3 33.Ke3 Kd6 34.Nb5 Kd5 35.Rd1 Kc5 36.Rc1 Kd5=) 33.Nf5?? (better 33.Nb5+–) 33...gf5–+ 34.Rd2 (34.Rbd1 Nc2–+) 34...Nc6 (34...Rh2 35.Kf2–+) 35.h3 (35.Rc2 Na7 36.f4 Rh2–+) 35...Ra4 36.Rd5 (36.Rb5–+) 36...Kf6 (36...Ra2 37.Kf1 Ke6 38.Rdb5–+) 37.Rdb5?? (better 37.Rd6 Kf7 38.Rc6 Ra2 39.Kd1=+) 37...Ra2–+ 38.Kf1 Ke7 (38...Nb4!? 39.g4–+) 39.Rf5 Ke6 40.Rfb5 Nb4 41.e4 h5! 42.Rh5 Nd3 (42...Rg7 43.g4 Rf7 44.Rh6 Ke5 45.Rh5 Kf4 46.Kg1–+) 43.Rh6 (43.Rb6 Rb6 44.Rh6 Ke5 45.Rb6 a4–+) 43...Ke5–+ 44.Rhb6 (44.Rd1 Rc7 45.Rh5 Kf4–+) 44...Rd7 (44...Rg7 45.g4 Rh7 46.R6b5 Kf4 47.Rh5–+) 45.R6b5? (45.Rd1 Kd4–/+) 45...Kd4 (45...Kf4 46.Rd5 Rd5 47.ed5 Kg3 48.Rb8 Kh2 49.Rb2 Rb2 50.d6 Rf2) 46.Rd1–/+ Kc4 47.Rd5 (47.Rb8!?–/+) 47...Rd5–+ 48.ed5 Nc5?? (better 48...Nf2 49.Rb1 Kd5–+) 49.d6 (49.h4 Rb2 50.h5 Rb7=) 49...Nd7= 50.h4 a4 51.h5 a3 (51...Rb2 52.h6+–) 52.h6+– Rb2 53.Ra1 Kb3?? (better 53...Kc5+–) 54.h7 Rc2 (54...a2 55.h8Q Rb1 56.Ke2 Ra1 57.Qa1+–) 55.h8Q a2 56.Qg8 Kc3 57.Qg7 Kd2 58.Qd7 (58.Qd4) 58...Rb2 59.Ra2! Ra2 (59...Ra2 60.Qg4 Combination) 60.Qc7 (60.Qb5 Kc1 61.Qc4 Kb1 62.Qd3 Kc1 63.Qe3 Kb2+–) 60...Ra1 61.Kf2 Re1 62.Qa5 Kd1 (62...Kc1 63.Qe1 Kb2 64.Qb4 Kc1 65.d7 Kc2 66.d8Q Kc1 67.Qdd2) 63.Qe1 Kc2 64.d7 Kb3 65.d8Q Kc4 66.Qe4 (66.Qda5 Kd4 67.Qec3) 66...Kc5 (66...Kc3 67.Qdd3 Kb2 68.Qee2 Kc1 69.Qed2) 67.Qdd5 (67.Qed5 Kb4 68.Q8a5) 67...Kb6 68.Qee6 (68.Qc6 Ka5 69.Qea4) 68...Ka7 (68...Kc7 69.Qed6 Kc8 70.Q5c6) 69.Qdd7 Kb8 70.Qee8 1–0. smoothoperator – samantho, net–chess.com, 2018.

5.c4 b6 6.d4 Bb7+=.

5.c4 Qe7 6.b5 f5 7.Bg7 Qg7 8.Nc3 Ne7 9.Be2 d5 (9...d6!?+–) 10.Rc1+– dc4 (10...0–0 11.Qb3 c6 12.0–0+–) 11.Qa4 (11.Bc4 Nd7+–) 11...0–0 12.0–0 Kh8 (12...Qf6 13.Qc4 c6 14.a4+–) 13.Qc4 c6 14.d4 (14.a4 e5+–) 14...cb5 (14...a6 15.a4+–) 15.Nb5 Nbc6 (15...Nec6 16.Qc3+–) 16.Nc7 Rb8 17.Ne6 Be6 18.Qe6 Rfe8 (18...Qf7 19.Bc4 Qf6 20.Rfd1+–) 19.Qb3 h5 (19...Rbd8 20.Rfd1 Qg8 21.Bc4+–) 20.d5 (20.Rfd1 f4 21.d5 fe3 22.dc6 ef2 23.Kf2 Nc6+–) 20...Nd8 (20...Ne5 21.Nd4+–) 21.Rfd1 (21.d6 Nec6 22.Rfd1 Re4+–) 21...g5 (21...Rc8 22.Bc4 Ng8 23.Qa4+–) 22.d6 (22.Nd4 Rf8+–) 22...Nec6 23.Rc5 (better 23.Rd5 Rf8+–) 23...g4 (23...Rf8 24.h4 b6 25.Rcd5+–) 24.Rf5 gf3 (24...Re6 25.Nh4 Rh6+–) 25.Rh5 Qh7 26.Rh7 Kh7 27.Bf3 a6 (27...Rf8+–) 28.Bc6 Nc6 29.Qf7 Kh6 30.d7 Red8 (30...Re6 31.Qe6 Kg7 32.Rd5 Ne5 33.Re5 Rh8 34.Qe7 Kg6 35.Rg5 Kh6 36.Qg7) 31.Rd6 Kg5 32.Qf4 Kh5 33.Rh6 1–0. ggo7801 – xrpnbca, internet private game online, 2018.

5.c4 Ne7 6.b5 0–0 7.Be2 f5 (7...a6 8.ba6 b6 9.a7 Ra7 10.0–0=) 8.Qb3 a6 9.Bg7 Kg7 10.Qb2 Kg8 11.a4 d6 12.0–0 ab5 13.ab5 Ra1 14.Qa1 b6 15.Qa7 Nd7 16.d4 Nf6 17.Nc3 c6 18.Rb1 cb5 19.Rb5 Bd7 20.Rb1 (20.Rb6? Nc8 21.Qa3 Qb6–+ (21...Nb6?! 22.Qd6 Qb8 23.Qb8 Rb8 24.Ne5–+)) 20...Ne4 (20...Nc8!? 21.Qb7 Qe8+–) 21.Ne4+– fe4 22.Nd2 d5 (22...Nc6 23.Qb7 d5 24.Qb6+– (24.Rb6?! Qf6 25.f3 Nd4 26.Qd7 Rf7 27.Rb8 Kg7+=)) 23.Qb6 (23.Rb6? Nc8 24.Qa2 Nb6 (worse 24...Qb6 25.cd5 Ne7 26.Bc4–+) 25.cd5 ed5 26.Ne4 Qa8–+) 23...Qb6 24.Rb6 dc4 (24...Kf7 25.Rd6 Rd8 26.h3+–) 25.Bc4 Rf4 (25...Bc6+–) 26.ef4 (26.ef4 Bc6 27.Be6 Kg7 28.Bb3+–) 1–0. GuestWRSB – GuestWTPJ, freechess.org, 2018.

5.c4 Ne7 6.Be2 0–0 7.0–0 a6 8.Nc3 Nbc6 9.Qb3 a5 (9...b6 10.d4+–) 10.b5+– Na7 (10...Ne5 11.Nd4+–) 11.c5 (11.d4 b6+–) 11...b6 12.cb6 (12.Ne4 Bb7 13.c6 a4+=) 12...cb6+– 13.Nd4 (13.h4 Bb7+–) 13...Bb7 14.Rac1 (14.f4+–) 14...Nd5 (better 14...Rc8!?+–) 15.Bf3+– Rb8? (15...a4 16.Qc4 (worse 16.Qa4 Nc6 17.Nc6 dc6+–) 16...Rc8 17.Qa4 (17.Bd5?! Rc4 18.Bc4 d5=+) 17...Nc3 18.Bc3 (18.Qa7?! Bf3 19.Rc3 Ra8=) 18...Bf3 19.Nf3+– (19.Qa7 Ra8 20.Qa6 Bd5–+)) 16.Nd5 (16.Bd5?! ed5 17.Nd5 Kh8+–) 16...ed5 17.Bd5 (17.h3 Kh8+–) 17...Kh8 (17...Bd5 18.Qd5 Rf7 19.Ba3+–) 18.Bb7 Rb7 19.Qd5 Rc7 (19...Qa8 20.h4+–) 20.Rc7 (20.Ba3 Rg8 21.Rc7 Qc7+–) 20...Qc7 21.Rc1 Qd8 (21...Qb8 22.Qd7 Rd8 23.Qc7+–) 22.Ba3 Re8 (22...Rg8 23.Qb7 Nc8 24.Rc7+–) 23.Qb7 Qa8 (23...Nc8 24.Rc7 f5 25.Rd7+–) 24.Qd7 Rd8 (24...Rg8 25.Rc7 Nb5 26.Qb5+–) 25.Qf7 Nb5 (25...Rg8 26.Rc7 Qd8 27.Ra7+–) 26.Nb5 Rd2 (26...Rc8 27.Nc7 Qb8 28.Be7+–) 27.Nd6 Ra2 (27...Qg8 28.Qd7 h5 29.Nf7 Kh7 30.Qd2 Qf7+–) 28.Nc8 h5 (28...Qc6 29.Rc6 Ra1 30.Bc1 h5 31.Ne7 Rc1 32.Rc1 Kh7 33.Rc8 Kh6 34.Qg6) 29.Bf8 Bf8 (29...Qg2 30.Kg2 Bh6 31.Bh6 Rf2 32.Kf2 a4 33.Qg7) 30.Qf8 Kh7 31.Rc7 1–0. Adlai – Banta, corr, 2018.

5.Bd3 Nh6 6.0–0 d6 7.c4 e5 8.Qc2 0–0 9.Nc3 Re8 (better 9...Nc6 10.a3 f5=) 10.Bg6?? (better 10.Be2+=) 10...f5?? (better 10...hg6 11.Qg6 Bf5–+) 11.Be8+– Qe8 12.h3 (12.d4 Be6 13.Nb5 Qd7+–) 12...Nd7 (12...Be6 13.d3+–) 13.Nd5 c6 (13...Qd8 14.d4+–) 14.Nc3 (better 14.Nc7 Qd8 15.Na8+–) 14...Nf6 Black intends e4 (14...e4 15.Ne1+–) 15.Ne2 Be6 (15...e4 16.Nfd4+–) 16.d4 e4 17.Ng5 Bd7 18.d5! cd5 19.cd5 Nd5 (19...Nf7 20.Nf7 Qf7 21.Rfd1+–) 20.Bg7 Kg7 21.Rad1 Nb4?? (21...Qe5+–) 22.Qb2 Kg6 (22...Kg8 23.Qb4 Bc6 24.Rd6 Nf7+–) 23.Rd6 Kg5 (23...Be6 24.Nf4 Kg5 25.Qg7 Qg6 26.Qe7 Qf6 27.Ne6 Kh4 28.Qf6 Kh5 29.Qg5) 24.Qf6 (24.Qf6 Kh5 25.Qh6) 1–0. Abdullaevich (1775) – p_I_E_R_RE, lichess.org, 2019.

5.d4 Ne7 6.a4 Rg8 (6...d5 7.Be2+=) 7.Nbd2 f5 (7...d5 8.e4+=) 8.Bc4 (8.c4 d6+–) 8...Nec6 (8...Nd5 9.b5+=) 9.b5+– Nb4 10.c3 Nd5 11.Bd5 (11.Be2 g5+–) 11...ed5 12.Qb3 Qe7 (12...c6!?+–) 13.Qd5 d6?? (13...Rf8 14.0–0+–) 14.Ba3 (14.Qg8 Bf8+–) 14...a6?? (better 14...Rf8+–) 15.Qg8+– Kd7 (15...Bf8 16.b6! c5 17.Qc4+–) 16.Qc4 (better 16.Nc4 Qf8 17.Qh7 Qf6+–) 16...Qe6 (16...ab5 17.ab5 Qe8 18.0–0+–) 17.0–0 (17.Qe6!? Ke6 18.Ng5 Kd7 19.Nh7 ab5 20.ab5 Ra5+–) 17...Qc4 18.Nc4 Ke7 (18...d5 19.Nce5 Ke8 20.Rfc1+–) 19.Nce5 (19.b6!? c5 20.dc5 Nc6 21.cd6 Kd8+–) 19...Be5 (19...Be6 20.b6! Nd7 21.bc7+–) 20.Ne5 (better 20.de5!? Nd7+–) 20...Ke6 (20...Be6 21.b6! Kd8 22.d5+–) 21.Nf3 d5 (21...h6 22.b6! c6 23.c4+–) 22.Rab1 (better 22.Ng5 Kf6 23.Nh7 Kg7+–) 22...ab5 23.Rb5 c6 24.Rbb1 (24.Rb3 h6+–) 24...Ra4 25.Bc5 (25.Ng5!? Kd7 26.Rb3 h5+–) 25...Na6 26.Bb4 Nb4 27.Rb4 Ra3 28.Rc1 h5 29.h4 Kf6 30.Nd2 (30.Ne5 Ra6+–) 30...f4 (30...Ra2 31.Nb3+–) 31.Rb3 (31.c4 Ra2 32.cd5 Rd2 33.dc6 b6+–) 31...Ra2 32.Nf3 fe3 33.fe3 Kf5 (33...Ra7 34.Ng5+–) 34.Rf1 (better 34.Ne5+–) 34...Kg4 (34...Ke4 35.Ne5 g5 36.hg5+–) 35.Rf2 (35.Kh2 Bf5 36.Rb7 Rb2 37.Rb2 Be6 38.g3 Kf5 39.Ng5 Kg4 40.Rf4) 35...Ra1 (35...Rf2 36.Kf2 Kf5+–) 36.Kh2 Kf5 37.Ne5 (37.Ng5 Kg4 38.Rf4) 37...Ke4 (37...Ke6 38.Rf8 Ra8 39.Ng6+–) 38.Ng6 (38.Rf4 Ke3 39.Rf3 Kd2 40.Rb2 Kc1 41.Nd3 Kd1 42.Rf1) 38...Ke3+– 39.c4 (better 39.Rf3 Ke4 40.Rb2+–) 39...Kf2+= 40.cd5 Rg1?? The backward pawn on g2 becomes a target (40...cd5 41.Nf4+–) 41.Rg3 (better 41.Rf3 Ke1 42.Kg1 cd5+–) 41...Bh3?? (better 41...Rd1 42.Rf3 Ke1 43.dc6 bc6+–) 42.Nf4 (42.Rf3 Ke1 43.Kg1+– (43.gh3?! Rg6 44.dc6 bc6+=)) 42...Bg2 43.Ng2 (43.Rg2?! Rg2 44.Ng2 cd5+–) 43...cd5 44.Rg5 b5 (44...Rd1 45.Rh5 Rd4 46.Rf5 Ke2 47.h5+–) 45.Nf4 (45.Rf5 Ke2 46.Kg1 Kd3+–) 45...Rg5 (45...Rg4 46.Rg4 hg4 47.Nd3 Ke3+–) 46.hg5 b4 47.Nd3 Ke3 48.Nb4 Kd4 49.g6 Kc4 50.Nd5! Kd5 51.g7 Ke4 52.g8Q Kf4 53.Qg3 Kf5 54.Kh3 Kf6 55.Kh4 Kf5 56.Qg5 Ke4 57.Kg3 Kd3 58.Qf4 Kc3 59.Kf3 Kc2 (59...Kd3 60.Qe4 Kc3 61.Ke3 Kb2 62.Kd3 Kc1 63.Qe2 Kb1 64.Kc3 h4 65.Qb2) 60.Qe3 h4 61.Ke2 Kb2 (61...h3 62.Qd3 Kb2 63.Kd2 h2 64.Qb5 Ka3 65.Kc3 h1Q 66.Qb3) 62.Qd3 Ka2 (62...h3 63.Kd2 h2 64.Qb5 Ka3 65.Kc3 h1Q 66.Qb3) 63.Qb5 h3 64.Kd2 h2 65.Kc2 h1Q 66.Qb2 (66.Qa4) 1–0. lightln2 (1850) – Agesan, lichess.org, 2020.

5.d4 Ne7 6.c4 b6 7.Bd3 Bb7 8.Nbd2 d5 9.c5 Nd7 10.a3 (10.0–0 0–0+=) 10...bc5 11.dc5 c6 (11...e5 12.Be2=) 12.0–0 0–0 (12...e5 13.e4+=) 13.Qc2 (13.Nd4 Kf7+/–) 13...e5+= 14.Rfe1 (14.Be2 Qc8+=) 14...e4= 15.Ne4 de4 16.Be4 Ne5 17.Rad1 Qc7 18.Ne5 (18.Nd4!? Bc8 19.Nb5=) 18...fe5+= 19.f3 a5 20.Rd2 ab4 21.ab4 Ra2?? (better is 21...Kh8+=) 22.Red1 (22.Qc4 Kh8 23.Qa2 Nd5+–) 22...Ba6?? (better is 22...Nd5 23.Qb3 Rb2 24.Rb2 Kh8+/–) 23.Qb3+– Kh8 24.Qa2 Nf5 25.Bf5 gf5 26.Qa6 e4 27.Bg7 Kg7 28.Rd7 Qd7 29.Rd7 Kg6 30.Qc6 Kg5 31.Rg7 Kh5 32.Rh7 Kg5 33.Rg7 Kh5 34.Qg6 Kh4 35.Qh6 (35.Rh7) 1–0. Fournier,Frederic – SUSGANOATOS, Active, 2009.

4.Nf3 Nh6

5.b5 0–0 6.c4 c5 (6...d6 7.Nc3+=) 7.Bd3 e5 (7...d6 8.Nc3+=) 8.Qc2 (8.Nc3 f5 9.e4 d6+=) 8...f5 (8...d6 9.Nc3+=) 9.Be5 Be5 10.Ne5 Qe8 (10...Qf6!? 11.Qc3 d6+–) 11.Nf3+– d6 12.0–0 (12.Nc3 Be6+–) 12...Nd7 13.Nc3 Nf6 14.Rae1 Be6 15.e4 fe4 (15...Qd7 16.Ng5 Rae8 17.Qa4+–) 16.Ne4 (16.Be4 Qd7 17.Bb7 Bf5+–) 16...Ne4 (16...Qd7 17.Qc3 Ne4 18.Be4+– (worse 18.Re4 Bf5+–)) 17.Be4 (17.Re4?! Qd7+–) 17...Qf7 (17...Qd7 18.Bb7! Qb7 19.Re6 Nf5+–) 18.Ng5 Qf6 19.Ne6 Qe6 (19...Rf7 20.Bd5 Kh8 21.h3+–) 20.Bd5 Qd5 21.cd5 Nf5 22.Re6 Nd4 (22...Rad8 23.Qa4 a6 24.ba6 ba6 25.Rb1+–) 23.Qe4 Ne6 (23...Nf5 24.g4 Nd4 25.Re7+–) 24.Qe6 Kh8 (24...Rf7 25.Qd6 a6 26.b6+–) 25.Qd6 Rad8 (25...Kg8 26.Qc5 Rae8 27.Qa7+–) 26.Qc5 b6 (26...a6+–) 27.Qd4 Kg8 28.d6 Rf5 29.Re1 Rb5 30.Qc4 (30.Qc4 Kf8 31.Qb5 h5 32.Qg5 Rd6 33.Qf4 Kg8 34.Re8 Kh7 35.Re7 Kg8 36.Qd6 b5 37.Qd8) 1–0. DEFFM – GuestXLSF, freechess.org, 2019.

5.b5 b6 6.c4 0–0 7.Nc3 Bb7 8.Be2 d6 (8...a6 9.d4+=) 9.0–0 Nd7 (9...a6 10.Nd4 Qc8 11.Bf3+–) 10.d4 (10.Nd4 Nc5+–) 10...e5+= 11.Qb3 Rf7 12.Rfd1 Qe7 (12...a6 13.Rab1+=) 13.Nd5+– Bd5 (13...Qd8 14.Rac1+–) 14.cd5 ed4 (14...e4 15.Nd2+–) 15.ed4 (15.Nd4 Nc5 16.Qc4 f5+–) 15...Raf8 (15...Re8 16.Re1+–) 16.Rac1 Rc8 (16...Qd8 17.Bd3+–) 17.Bd3 f5 18.Re1 Qg5?? (better 18...Qd8+–) 19.Ng5+– Rf6 20.Re7 Nf8 21.Rcc7 Rd8 22.Rg7 Kh8 23.Qc3 Re8 24.Rh7 Nh7 25.Rh7 Kg8 26.Qc7 (26.Qc7 Re1 27.Bf1 Re7 28.Qe7 Rf7 29.Qe8 Rf8 30.Qg6) 1–0. DEFFM – GuestQSRY, freechess.org, 2019.

5.c4 b6 6.b5 Bb7 7.Be2 0–0 8.a4 e5 9.h3 (9.d4 a6+=) 9...d5 (9...a6 10.0–0=) 10.0–0 d4 (10...c5 11.d4+=) 11.ed4 ed4 (better 11...e4!? 12.Ne1 f5+=) 12.Nd4+– f5?? (better 12...Qd6+–) 13.Ne6 Qe7 (13...Bb2 14.Nd8 Rd8 15.Ra2+–) 14.Bg7 (worse 14.Ng7 Nd7 15.c5 Nf6+–) 14...Rf6 (14...Qe6 15.Bh6 Re8+–) 15.Bf6 Qf6 (15...Qe6 16.Bc3+–) 16.Nc7 Qa1 17.Na8 (better 17.Bf3 Nd7 18.Na8 Bf3 19.Qf3 Qd4+–) 17...Ba8 18.Nc3 Qa3 (18...Qd1 19.Rd1 Nd7 20.d4+–) 19.Qc2 (19.Bf3!? Bf3 20.Qf3 Qd6+–) 19...Qc5 20.Rd1 Nd7 21.d4 Qc7 22.d5 (22.Qb3 Kg7+–) 22...Nc5 (22...Nf7 23.Qd3+–) 23.d6 Qb7 (23...Qd7 24.a5! Be4 25.Qd2+–) 24.Bf3 Qb8 25.Ba8 (better 25.d7!? Ne6 26.Re1 Ng7 27.Ba8 Qa8+–) 25...Qa8 26.d7 Qd8 27.Qd2 Nf7 28.Qd5 Kg7 29.Qe6 (29.Qd4 Kf8+–) 29...h5 (better 29...Ne6 30.a5 ba5–+) 30.Qe8 Ne6 (30...h4 31.Ne2 Nb7 32.Nf4+–) 31.Nd5 (better 31.Qe6 f4 32.Nd5+–) 31...Nd6 (31...Nc5 32.Nf4 Qf6+–) 32.Qe6 Nc4 33.Qf6! Qf6 34.Nf6 Kf6 (34...f4 35.d8Q Ne5 36.Rd7 Nf7 37.Qh8 Kh8 38.Rf7 a6 39.Rh7) 35.d8Q Kg7 (35...Kf7 36.Rd7 Ke6 37.Qe7) 36.Qd4 (36.Rd7 Kh6 37.h4 g5 38.Qg5) 36...Ne5 (36...Kf8 37.Qf6 Kg8 38.Rd8 Kh7 39.Qh8) 37.Qc4! Nc4 38.Rd7 Kf6 39.Ra7 g5 (39...Ke6 40.Rg7 Kf6 41.Rc7+–) 40.g3 (40.a5 ba5 41.b6 Nb6+–) 40...f4 (40...h4 41.gh4 gh4 42.a5 ba5 43.b6+–) 41.Kg2 (better 41.gf4 gf4 42.Rh7+–) 41...Nd2 (41...fg3 42.fg3 g4+–) 42.a5 f3 43.Kg1 g4 (43...Ne4 44.ab6 Nd6+–) 44.ab6 gh3 45.b7 h2 46.Kh2 Nf1 47.Kg1 Nd2 48.b8Q Ne4 49.Ra6 Kf5 (49...Nd6 50.Qd6 Kf7 51.Ra7 Ke8 52.Qe7) 50.Qf4 1–0. Abdullaevich (1825) – KRUGUER0001 (1765), lichess.org, 2019.

5.c4 b6 6.b5 Bb7 7.Be2 c6 8.a4 c5 9.0–0 d5 10.cd5 Bd5 11.Nc3 Bb7 12.Qb3 Nd7 13.Qe6 Bc8 14.Nd5 Ne5 15.Be5 Be6 16.Nc7 Kf7 17.Na8 fe5 18.Nb6 ab6 19.Ng5 Kf6 20.Ne6 Ke6 21.d4 cd4 22.Rfd1 Nf5 23.ed4 Nd4 24.Bc4 Kf6 25.a5 ba5 26.Ra5 Qa5 0–1. Abdullaevich (1825) – KRUGUER0001 (1630), lichess.org, 2019.

5.c4 d5 6.cd5 Qd5 7.Nc3 Qd6 8.Bc4 (better 8.Qa4 Bd7 9.b5+=) 8...Be6?? (8...Qb4!? 9.Qb3 Qb3 10.ab3 c6=) 9.Qb3 (better 9.Nb5!? Qd7 10.Nc7 Qc7 11.Be6+–) 9...Bc4+= 10.Qc4 a6 (10...Nc6 11.a3 Nf5 12.b5+–) 11.Ne4 (11.Nd4 Nc6 12.Ne6 Ne5 13.Ng7 Kf8 14.Ne6 Kf7 15.Ng5 Ke8+–) 11...Qc6+= 12.Qb3?? (12.Rc1 Qc4 13.Rc4 Nc6+=) 12...Nf7?? (12...Qe4 13.d3 Qg4 14.0–0–+) 13.Rc1?? (13.Neg5 0–0 14.Ne6+–) 13...Qd7?? (better 13...Qe4 14.Rc7 Nc6–+) 14.Nc5+– Qc8 (14...Qd6 15.Ne6 (15.Nb7?! Qb6 16.Nc5 0–0+–) 15...Nc6 16.Ng7 Kf8 17.Ne6 Ke8 18.Ba3+–) 15.Ne6 Bh6 (15...Nc6 16.Ng7 Kf8 17.Ne6 Ke8+–) 16.Rc7 (better 16.Nc7 Kd8 17.Na8 Nc6 18.Qf7 Qa8+–) ½–½. aravind555 (1630) – Serega63, lichess.org, 2019.

5.c4 Nf7 6.Be2 0–0 7.0–0 d6 8.b5 Nd7 9.h3 e5 10.a4 c5 11.d4 b6 12.dc5 Nc5 13.Nc3 Bb7 14.Nd5 Bd5 (14...e4 15.Nd4+=) 15.Qd5 f5 16.Nh2 (16.Rfd1 a6+=) 16...Qe7 17.Rfd1 Kh8 18.a5 Nb3 19.ab6 Na1 20.Ra1 Rfb8 21.ba7 (better 21.Ra6+=) 21...Rb7?? (21...Ra7 22.Nf3=) 22.Nf3?? (22.b6 e4 23.Bg7 Kg7+–) 22...Rba7? (22...Raa7 23.e4=) 23.Ra7 (better 23.Qa8 Ra8 24.Ra8 Nd8 25.b6+–) 23...Ra7= 24.g3 (better 24.Bc3=) 24...Ng5?? (better 24...Ra2 25.Qd2 Kg8=+) 25.Ng5+– Qg5 (25...h6 26.Nf3 Ra2 27.Qd2+–) 26.Qd6 (26.b6 Rd7 27.Qa8 Rd8+–) 26...Qe7 (26...Ra8 27.Be5 Qh6 28.Bf3+–) 27.Qb8 Bf8 28.b6 Rb7 29.Be5 Kg8 30.Qd6 (better 30.Bf3 Rb8 31.Bd5 Qf7 32.Bb8+–) 30...Qd6–+ 31.Bd6 Bd6 32.c5 (32.Kg2 Rb6 33.Kf3 Kf7–+) 32...Bc5 33.Bc4 Kf8 0–1. Abdullaevich (1870) – creeatig (1880), lichess.org, 2020.

5.Bc4 e6 6.0–0 0–0 7.Nc3 c6 8.d4 f5 9.Rb1 b5 10.Bb3 a5 11.ba5 Ra5 12.a4 ba4 13.Na4 Ba6 (13...d6 14.Bc3 Ra6 15.Nb2+=) 14.Re1 Bb5 15.Nc5 Na6?? (15...Ba6+–) 16.Be6 (better 16.Nb7 Qc7 17.Na5 Qa5 18.c4+–) 16...de6+= 17.Ne6 Qe7 (17...Qd5 18.Nf8 Bf8 19.Nd2+=) 18.Nf8 (18.Ng7 Kg7 19.d5 Kf7+–) 18...Qf8 (18...Bf8 19.Ne5 Qe6 20.Qd2+=) 19.Qd2 (19.d5 Bb2 20.Rb2 Ba4+–) 19...Ra2+= 20.Bc3 Bf6 21.Ne5 Nf7 22.Nd7 Qe7 23.Nf6 Qf6 24.d5 Qd6 25.dc6 (25.Qd4!? Qf8 26.dc6+–) 25...Qd2+– 26.Bd2 Bc6 27.Rb6 (27.Ra1 Ra1 28.Ra1 Bb7+–) 27...Be4 28.Reb1 (28.f3 Ne5 29.fe4 Nc4+–) 28...Kg7 (better 28...Rc2 29.R1b2 Rb2 30.Rb2 Ne5=+) 29.Bc3 Kh6 30.Rf6 (30.R6b2 Ra3 31.Bd4+–) 30...Ng5?? (30...Rc2 31.f3 (worse 31.Ra6 Rc3 32.Rba1 Rc2=+) 31...Bd5 32.Bd4=) 31.Rbb6?? (better 31.h4 Rc2 32.Bd4+–) 31...Rc2 (better 31...Nc7 32.h4 Nh3 33.gh3 Nd5=) 32.Be1?? (better 32.h4 Nc5 33.hg5 Kg5 34.Bd4=) 32...Nc5 33.f3 (33.h4 Nh3! 34.gh3 Rc1–+) 33...Bf3! 34.gf3 Nf3 A double attack 35.Kh1 (35.Kf1 Nh2 36.Kg1 Nf3 37.Kf1 Kg5–+) 35...Ne1 (35...Rh2) 36.Rbc6 (36.Rf5 Nd7 37.Re6–+) 36…Ne4 (36...Ne4 37.Rc2 Nc2–+ (worse 37...Nf6 38.Rb2–+); 36...Nf3 37.Rg6 hg6 38.Rg6 Kg6 39.h4 Rh2) 0–1. aravind555 – nikolay231992 (1625), lichess.org, 2017.

5.Bc4 e6 6.0–0 d5 7.Bb5 c6 8.Be2 0–0 9.c4 Nd7 10.cd5 cd5 11.Nc3 a6 12.e4 b5 (12...Nb6!? 13.Qb3 de4 14.Ne4 Nd5+=) 13.ed5+– ed5 (13...Nb6 14.a4 ed5 15.ab5 ab5 16.Ra8 Na8 17.Re1+–) 14.Nd5 Bb7 15.Nf4 f5?? (better 15...Qe7 16.Qb3 Rf7+–) 16.Ne6 (better 16.Bg7 Nf7 17.Bf8 Qf8+–) 16...Qe7 17.Bg7 (17.Ng7?! Nf6+–) 17...Rfe8 18.Nfg5 (better 18.Bh6 Qe6 19.Re1+–) 18...Nf7 19.Nf7 Qf7? (better 19...Qe6 20.Bc3 Qf7+–) 20.Nc7+– Qg7 21.Na8 Ba8 22.Bf3 (22.a4 Bc6+–) 22...Bf3 23.Qf3 (23.gf3?! Ne5+–) 23...Ne5 24.Qd5 (better 24.Qb3 Kh8+–) 24...Kf8? (24...Qf7 25.Qf7 Kf7+–) 25.Rfe1 Nd7 (25...Qf6 26.d4 Nf7+–) 26.Re8 Ke8 Do you see the mate threat? 27.Qa8 (27.Re1 Kd8 28.Qa8 Kc7 29.Rc1 Kd6 30.Qa6 Ke7 31.Re1 Qe5 32.Re5 Ne5 33.Qb5+–) 27...Kf7 28.Re1 Kf6 (28...Qd4 29.Qd8 Kg7 30.Re7 Kh6+–) 29.Qa6 (29.Qd8 Kf7 30.Re7 Kf6 31.Re8 Kf7 32.Qe7) 29...Kg5+– 30.Qb5 (30.Qd6 Kh5 31.Qd3 Qf8 32.Qh3 Kg5 33.f4 Kf6 34.Qc3 Kf7+–) 30...Nf6 (30...Qd4 31.d3+–) 31.a4 Ne4 (31...Qf7 32.Qc5+–) 32.d3 (better 32.Re4!? Qa1 33.Qf1 Qa4+–) 32...Nc3 (32...Qc3 33.Rf1 Nd6 34.Qd7 Qb4 35.a5+–) 33.Qe5 (better 33.Qb6 Kh5 34.Qe3 Qf6+–) 33...Qe5 34.Re5 Na4 35.d4 Kf6 36.b5 Nb6 (36...f4 37.Rc5 Nc5 38.dc5+–) 37.Kf1 (37.Rc5 Ke7 38.Rc6 Nd5+–) 37...Nc4 (37...Kf7+–) 38.Ke2 (better 38.Rc5 Nd6 39.b6+–) 38...Ne5 39.de5 Ke5 40.b6 (40.Kf3 Kd5 41.g4 fg4 42.Kg4+–) 40...Kd6 41.b7 (better 41.Ke3 Kc6 42.Kf4 Kb6 43.Kg5+–) 41...Kc6?? (better 41...Kc7+–) 42.b8 (better 42.b8Q Kd5 43.Qg8 Ke5 44.Qh7+–) 42...Kb7 (42...Kd6 43.h3+–) 43.Nd7 Kc7 44.Nf8 Kd6 45.Nh7 Ke5 (45...Ke7 46.Ng5+–) 46.Nf8 (46.Nf8 g5 47.h4 gh4 48.Ng6 Kf6 49.Nh4+–; better 46.Ke3!? f4 47.Kf3 Kf5+–) 1–0. aravind555 – arashfx, lichess.org, 2018.

5.d4 0–0 6.Bd3 b6 7.b5 c6 8.bc6 White gets the initiative 8...Nc6 9.0–0 d5 10.c4 Bg4 11.Nc3 e6 12.h3 Bh5 (12...Bf5 13.cd5 ed5 14.Rc1+=) 13.g4 Bg4? (better is 13...Ng4 14.hg4 Bg4+/–) 14.hg4+– Ng4 (14...Qd7 15.cd5 ed5 16.Nd2+–) 15.cd5 ed5 16.Qb3 Rb8 17.Qd5 Qd5 18.Nd5 Rbd8 (18...Rfd8 19.e4+–) 19.Nf4 a5 (19...Rf7 20.Bc4+–) 20.Rfc1 (20.Bc4 Rf7+–) 20...Nb4 (20...Rd6 21.Ba3 Nb4 22.Rc7+–) 21.Bc4 Rf7 (21...Kh8 22.a3 Nc6+–) 22.Bf7 Kf7 23.Rc7 (23.Rc7 Kg8 24.Ne6+–) 1–0. Simon Wasum – Jay bravo, itsyourturn.com, 2001.

5.d4 a5 6.b5 +=.

5.d4 d6 6.Bd3 Nc6 7.a3 Be6 8.c4 Bf7 9.b5 Na5 10.Qa4 b6 11.Bc3 0–0 12.Ba5 ba5 13.Be4 Rb8 14.0–0 Rb6 (14...f5 15.Bc6 e5 16.Nc3 ed4 17.ed4+=) 15.Nbd2 (15.Nc3+–) 15...Be8 (better 15...f5!? 16.Bc6 e5+–) 16.Qa5+– a6?? (16...Bf7+–) 17.ba6 Bc6 (17...Bd7 18.Rab1 f5+–) 18.Bc6 Rc6 (18...Nf7 19.Bb7 c5 20.dc5 Rb7 21.Qd8 (21.ab7? Qa5 22.c6 Rb8–+) 21...Nd8 22.ab7 Nb7 23.cd6 ed6 24.Nd4+–) 19.Qd5 Rf7 (19...Nf7 20.Qc6 Qa8 21.Qc7 Qa6 22.Qe7+–) 20.Qc6 e5 21.a7 Rf8 22.Rab1 Qa8 23.Qa8 Ra8 24.Rb8 (24.Rb8 Rb8 25.ab8Q Bf8 26.Qc7 Ng4 27.Rb1 Nh6 28.Rb7 Nf7 29.Qf7 Kh8 30.Qf8) 1–0. DEFFM – GuestZCJN, freechess.org, 2019.

5.d4 Rg8 6.c4 e6 7.Bd3 Qe7 8.a3 d5 9.cd5 ed5 10.Nbd2 (10.Nc3 c6+/–) 10...Nc6 (10...Bf5 11.Be2+=) 11.Qa4 Bd7 12.Bb5 (12.b5 Nd8+/–) 12...Nf7 (12...a6 13.0–0=) 13.0–0 (13.Qb3 a6 14.Bd3 Be6+=) 13...Nd6 14.Bc6 Bc6 15.Qb3 a5 16.Bc3 (16.e4 a4 (16...Ne4? 17.Ne4 a4 18.Qa2+–) 17.Qa2 Qf7+= (17...Ne4? 18.Ne4 0–0–0 19.Nc5+–)) 16...a4 17.Qb2 Bb5 18.Rfe1 c6 19.Nf1 Ne4 20.Rac1 Kf7 21.N1d2 Ng5 22.Ng5+= fg5 23.Nf3 Rge8 24.e4 Qd6 25.e5 Qe6?? 26.Ng5+– Kg8 27.Ne6 Re6 28.Re3 Rf8 29.Qe2! Rf4?? 30.Rf3 Rh4?? 31.g3 Be2–+ 32.gh4 Bf3 33.Re1 Bh6 34.Bb2 Bd2 35.Rf1 g5 36.hg5 Bg5 37.Bc1 Bh4 38.h3 Rg6 39.Kh2 Kf7 40.Bf4 Re6 41.Bg3 Bg5 42.h4 Rh6 43.Kh3 Kg6 44.Rg1 Kf5 45.Re1 Ke6 46.Rb1 Kf5 47.Rb2?? Bg4 48.Kh2 Bh4 49.Bh4 Rh4 50.Kg3 Kg5 51.Kg2 Be6 52.Kg3 Rd4 0–1. Fournier,Frederic – Dumpfbacke, ICC, 2005.

5.Be2 0–0 6.0–0 Re8 7.Nc3 c6 8.b5 (8.h4 Na6 9.b5 Nc7+–) 8...f5 (8...cb5 9.Bb5 Nc6 10.e4+=) 9.a4+– e6 10.h3 (10.d3 d5+=) 10...cb5 (10...d5!?+–) 11.ab5+– (11.Bb5?! Nf7+=) 11...Bc3 (11...d6 12.Qb1+–) 12.Bc3 Qb6 (12...d6 13.Ra3+–) 13.Bd4 Qc7 (13...Qd8+–) 14.b6! Qc6 (14...ab6 15.Ra8 Pinning (15.Ra8 Deflection)) 15.Ra7 Ra7 (15...Qa4 16.Qa1 Qa1 17.Rfa1 Nc6 18.Ra8 Nf7+–) 16.ba7 b6 17.ab8Q e5 18.Ne5 Qg2 19.Kg2 (19.Kg2 Nf7 20.Bc4 Kf8 21.Nf7 h6 22.Qd6 Re7 23.Ne5 Bb7 24.Kg1 Bd5 25.Bd5 f4 26.Ng6 Ke8 27.Qe7) 1–0. Pierre – Vajdafedy, internet, 2020.

5.Be2 0–0 6.0–0 f5 7.Bg7 Kg7 8.h3 d6 9.Nc3 (9.d4 Nd7+–) 9...e5+= 10.Bc4 e4 11.Nd4 c6 (11...Nc6 12.Nde2+=) 12.Be6 (12.Nce2 c5 13.bc5 dc5+–) 12...d5 (12...c5 13.Bc8 Qc8 14.bc5 dc5 15.Nde2+–) 13.Nce2+– Rf6 14.Nf4 Ng8 (better 14...Na6!?+–) 15.c4 dc4 16.Bc4 b5 17.Be6 Ne7 (17...Na6 18.d3 Qe8 19.Bc8 Rc8 20.de4 fe4 21.a4+–) 18.d3 Nd5 (18...Kh8 19.de4 fe4 20.Qb1 Rf4 21.Bc8 (21.ef4?! Qd4 22.Rd1 Qf6 23.Bc8 Nc8+=) 21...Nc8 22.Ne6+– (22.ef4?! Qd4 23.Rd1 Qf6+=)) 19.de4 fe4 20.Bd5 cd5 21.Rc1 Be6 (21...Na6 22.Nc6 Qd6 23.Nd5 Rf8+–) 22.Nde6 Re6 23.Ne6 Kh6 (23...Kg8 24.Nd8 Kf8 25.Qd5 Kg7 26.Rc7 Nd7 27.Rd7 Kh6 28.Ne6 Rc8 29.Qg5) 24.Nd8 Na6 (24...Nd7 25.Qg4 Nf6 26.Qf4 Kg7 27.Rc7 Nd7 28.Rd7 Kg8 29.Qe5 Rd8 30.Qg7) 25.Qd5 Nb4 (25...Rd8 26.Qd8 Kg7 27.Rfd1 Kh6 28.Rd7 g5 29.Rc6 Kh5 30.Rh7) 26.Qe5 Na2 (26...Rd8 27.Qf4 Kg7 28.Rc7 Rd7 29.Rd7 Kg8 30.Qb8) 27.Nf7 1–0. Pierre – Ares, internet, 2019.

5.Be2+= d5 6.0–0 +=.

5.Be2 Nf5 6.d4 b6 7.e4 Nd6 8.e5 fe5 9.de5 Nf5 10.Qc1 (10.a3 Bb7+=) 10...e6 11.Qg5 (11.Nbd2 Bb7=) 11...Qg5= 12.Ng5 Bb7 13.Bb5 (13.Bf3 Bf3 14.Nf3 0–0=) 13...c6 (better 13...Bg2!? 14.Rg1 Nh4–/+) 14.Bd3= c5 15.bc5 bc5 16.0–0 h6 17.Ne4 d5?? (better 17...c4 18.Nf6 Bf6 19.Bf5 gf5 (worse 19...ef5 20.ef6 0–0 21.Na3+=) 20.ef6 Rg8=) 18.Nd6?? (better 18.Nc5 Bc8 19.Nd2+–) 18...Kd7?? (better 18...Nd6 19.Bg6 Kd8–+) 19.Nb7+– Nc6 (19...c4 20.Bf5 gf5 21.Nc5 Ke7+–) 20.Nc5 Kc7 (20...Ke7 21.f4 Nb4+–) 21.Ne6 Kd7 (21...Kb6 22.Bf5 Be5 23.Be5 Ne5 24.Re1 Nf3 25.gf3 gf5 26.Nc3+–) 22.Ng7 (better 22.Bf5 Be5 23.Be5 Ne5+–) 22...Ng7 23.e6! Ke6 (23...Ne6 A pinning theme 24.Bh8) 24.Bg7 Rhg8 (24...Rh7 25.Bc3+–) 25.Bb2 (25.Bh6 Nb4+–) 25...Kd6 (25...Rab8 26.Bc1 g5 27.Nc3+–) 26.Ba3 Kc7 27.Nc3 d4 (27...Rad8 28.Rab1 a5 29.Rb5+–) 28.Nd5 Kd7 29.Nf6 Kc7 30.Ng8 Rg8 31.Rfe1 a5 32.h3 g5 33.Re6 h5 34.Be4 Nd8 35.Re7 Kc8 36.Bf5 Kb8 37.Rb1 Ka8 38.Be4 Nb7 39.Bb7 (39.Rbb7 Rc8 40.Ra7 Kb8 41.Reb7) 39...Ka7 (39...Kb8 40.Bd5 Kc8 41.Be6 Kd8 42.Rb8) 40.Bc5 (40.Be4 Ka6 41.Bd3) 40...Kb8 41.Bd5 (41.Ba6 Ka8 42.Ra7) 41...Kc8 42.Bg8 (42.Be6 Kd8 43.Rb8) 42...Kd8 (42...g4 43.Be6 Kd8 44.Rb8) 43.Rb8 1–0. sdfkgfkftk – zombien_5, lichess.org, 2020.

5.Be2 Nf7 6.0–0 0–0 7.c4 d6 8.d4 Re8 9.Nc3 Nd7 10.h4 (10.Qd3 e5+=) 10...a6 (10...e5 11.h5=) 11.h5+= Rf8 (11...gh5 12.Bd3+=) 12.Qc2 Nh8 (12...f5 13.hg6 hg6 14.Nh4+=) 13.c5 (13.hg6 hg6 14.c5 e6+–) 13...Re8 (13...e6 14.Qe4 Re8 15.cd6 cd6 16.Rac1+–) 14.cd6 cd6 (better 14...ed6!? 15.Bc4 Kf8 16.hg6 hg6+–) 15.Nd5+– Rb8 (15...Nb6 16.Nc7+–) 16.Nc7 Nf8 17.hg6 hg6 18.Rfc1 e6 (18...Kf7 19.d5+–) 19.Ne8 Qe8 20.Qc7 Bd7 21.Qd6 Nf7 22.Qh2 Bc6 23.Rc2 g5 (23...Be4 24.Rc5+–) 24.Rac1 Ng6 (24...Rd8 25.a3+–) 25.Ba6! Bf3 (25...ba6 26.Rc6 Deflection (26.Rc6 Overloading)) 26.Bd3 (26.gf3?! ba6 27.a3 e5+–) 26...Nh4 27.Qb8!! Qb8 28.Rc8 Qc8 29.Rc8 Bf8 30.gf3 Nf3 31.Kh1 Kg7 (31...Nd6 32.Rc7+–) 32.Bc3 (32.Rc7 Bb4 33.Rb7 Be1+–) 32...Bd6 (32...Nd6 33.Rc7 Kg8 34.Kg2+–) 33.Be4 Nh4 (33...g4 34.Bb7 Bf8 35.Bf3 gf3 36.b5+–) 34.Bb7 e5 (34...Nf5 35.a4 Ne7 36.Re8+–) 35.b5 ed4 36.ed4 1–0. Janek – Kpmbspcdjp, internet, 2019.

5.Be2+= Nf7 6.0–0 0–0 7.d4 d5 (7...e5 8.c4+=) 8.c4 dc4 9.Bc4 Nc6 (9...Qd6 10.b5+=) 10.a3 (10.b5 Na5 11.Bd3 c6+=) 10...Bf5 (10...e6 11.Qc2+=) 11.d5 (11.Nbd2 Bg4+/–) 11...Nce5+= 12.Bb3 (12.Ne5 fe5 13.f3 Nd6+=) 12...Qd6 (12...Bg4 13.Nbd2=) 13.Nbd2 (13.Ne5 Ne5 14.Bd4 Bd3+/–) 13...Bg4 (13...Bd3 14.Ne5 Ne5+=) 14.e4 (14.h3!? Bf3 15.Nf3+=) 14...f5 15.ef5? (better is 15.Nc4!? Nc4 16.Bg7 Bf3 17.Qf3+=) 15...Nf3 16.gf3 Bb2 (worse 16...Bf5 17.Bg7 Kg7 18.Qe2–/+) 17.Ra2? (17.fg4 Ba1 18.fg6 hg6 19.Qa1–/+) 17...Bh3 18.Rb2 (18.Ne4 Qe5 19.Re1 Bf5–+) 18...Qf6 (18...Bf1?! 19.fg6 Bh3 20.gf7 Rf7 21.Ne4 Rg7 22.Ng3–+) 19.Ne4 Qb2 20.Re1 (20.fg6 hg6 21.Re1 Rad8–+) 20...gf5 21.Ng3 f4 22.Nh5 Ne5 (22...Qa3 23.Qd4 Ne5 24.Qe5=) 23.Ba4 (23.d6 e6 24.dc7–+) 23...Rf5 24.Qe2 (24.Kh1 Rh5 25.Rg1 Kh8 26.Bc2–+) 24...Qe2 25.Re2 (25.Nf6 ef6 26.Re2 Rg5 27.Kh1 Bg2 28.Kg1 Nf3) 25...Rh5 26.Rc2 (26.Bd7 Rg5 27.Bg4 Nf3 28.Kh1 Rg4 29.Re7 Bg2) 26...Rg5 27.Kh1 Bg2 28.Kg1 Nf3 0–1. Zaichenko,Andrey (1800) – Schwarz,Ingo (1625), FICGS, 2007.

5.Be2+= Nf7 6.0–0 d5 7.d4+=.

5.Be2 Nf7 6.h3 0–0 7.c4 c6 8.Nc3 d6 9.0–0 Nd7 10.d4 Qc7 11.c5 b6 12.cd6 ed6 13.b5 Bb7 14.bc6 Bc6 15.Qb3 d5 (better 15...Rac8!?+–) 16.Nd5+– Bd5 17.Qd5 Rad8 18.Rfc1 Qb8 19.Qb3 Kh8?! (19...Qb7+–) 20.Ba3 Ng5 21.Ng5 fg5 22.Bf8 Rf8 23.Bf3 Nf6 (23...Qd8 24.Rc3+–) 24.Rc6 h5 25.Rac1 g4 26.hg4 hg4 27.Qe6 gf3 (27...Qe8 28.Bg4 Kh7 29.Qe8 Ne8 30.Be6+–) 28.Rc8 (28.gf3?! Qb7+–) 28...Rc8 (28...Qb7 29.R1c7 Rc8 30.Rb7 (30.Qc8?! Qc8 31.Rc8 Kh7+–; 30.Rc8?! Kh7+=) 30...Rc1 31.Kh2+–) 29.Rc8 (29.Qc8?! Qc8 30.Rc8 Kh7 31.gf3 Nd5+–) 29...Qc8 30.Qc8 Kh7 31.Qh3 Kg8 32.Qf3 1–0. Elce4 – Obujt2009, internet, 2019.

3.e3 Nh6

4.c4 d6 5.Nf3 (5.Nc3 Bg7+=) 5...Nf7 (5...Bg7 6.Nc3+–) 6.Be2+– Bg7 7.0–0 0–0 8.d4 c6 (8...e5 9.b5+–) 9.Nbd2 (9.Nc3 Na6 10.Qb3 Nc7+–) 9...e5 10.Qc2 (10.Qb3 Qe7+–) 10...Qe7 11.Rfe1 (11.b5 Be6+–) 11...Na6+= 12.a3 (12.b5 Nc7+=) 12...f5 (12...Nc7 13.h3+=) 13.de5 de5 14.c5 Be6 15.e4 f4 (15...Nc7!?+=) 16.Nc4+– Rad8 (16...Bg4 17.Rad1+–) 17.Nce5+– (17.Be5 Ne5 18.Nce5 Bc8 19.Ba6 Be5 20.Bc4 Kg7+–) 17...g5? (better 17...Ne5 18.Be5 Be5 19.Ne5 Nc7+–) 18.Ba6 ba6 (18...g4 19.Nf7 Rf7 20.Bg7 Rg7+–) 19.Nc6 Qd7 (19...Qc7 20.Nd8 Rd8 21.Bg7 Kg7 22.Qc3 Kg6 23.Rad1+–) 20.Nd8 Qd8 (20...Rd8 21.Bg7 Kg7 22.Rad1+–) 21.Rad1 Qe7 (21...Qc7 22.Bg7 Kg7 23.Qc3 Kg6 24.e5+–) 22.Bg7 Kg7 23.Nd4 Bc8 (23...Ne5+–) 24.Nf5 Bf5 25.ef5 Qc7 26.f6! Kg8 (26...Kf6 27.Qh7 Discovered attack (27.Qh7 Deflection)) 27.Re7 Qc8 28.Qc4 Qf5 (28...Qe8 29.c6 Qa8 30.c7 g4 31.Rf7 Re8 32.Re7 Kh8 33.Re8 Qe8 34.c8Q h6 35.Qe8 Kh7 36.Rd7) 29.Qf7! Rf7 (29...Rf7 30.Rd8 Mate attack) 30.Rd8 Rf8 31.Rg7 Kh8 32.Rf8 1–0. Pierre – Dersuum, internet, 2020.

4.c4 Nf7 5.a4 Bg7 6.b5 0–0 7.Nc3 e5 8.Nf3 d6 9.Be2 Bf5 10.d4 Nd7 (10...Bd7 11.0–0+=) 11.0–0 (11.Nh4 Nh6+–) 11...c6 (11...c5 12.Nh4+–) 12.Rc1 (12.Nh4 Nh6+–) 12...Nb6 13.Ba3 White prepares the advance c5 (13.a5 Nc8 14.Ra1 a6+–) 13...Re8 (13...Bg4 14.Ne4 f5 15.Nd6 Nd6 16.Bd6 Qd6 17.c5+–) 14.c5 (14.a5 Nc8 15.a6 ba6 16.bc6 Qa5+–) 14...Nd5 (14...dc5 15.de5 Qe7 16.bc6+–) 15.Nd5 (15.bc6!? Nc3 16.Rc3 bc6 17.cd6 Nd6 18.de5+–) 15...cd5+= 16.cd6 Nd6 (16...e4 17.Nd2+=) 17.de5+– fe5? (better 17...Nc4 18.ef6 Bf6+–) 18.Qd5+– Nf7 19.Qd8 (better 19.Qb7!? Rb8 20.Qa7 Ra8+–) 19...Rad8 20.Rfd1 e4 (20...h6 21.Bb2+–) 21.Nd4+– Bd4 22.ed4 e3 23.Bf3 (23.a5 Nd6 24.Bd6 Rd6 25.fe3 Re3+–) 23...ef2? (better 23...e2 24.Re1 Rd4 25.Be2 Ra4+=) 24.Kf2+– Ng5 (24...Rd7 25.Bc5+–) 25.Bb7 Ne4 (25...Bg4 26.Rd2+–) 26.Be4 Re4 27.Bc5 Rd5 (27...Rd7+–) 28.Ba7 Bg4 (28...Rf4 29.Ke3 Re4 30.Kf3+–) 29.Re1 Rf5 30.Kg1 Ref4 (30...Re2 31.Re2 Be2 32.Bc5+–) 31.b6 Rd4 (31...Rf7 32.a5 R4f6 33.Rb1+–) 32.b7 (32.b7 Rb4 33.Rb1 Rb1 34.Rb1+–) 1–0. BeepBeepImAJeep (2755) – is_er_nog_hoop (2610), lichess.org, 2020.

4.c4 Nf7 5.b5 Bg7 6.a4 e5 7.Nf3 d6 8.Be2 0–0 9.0–0 Nd7 10.Nc3 f5 11.h3 (11.d4 a6+=) 11...Nc5 (11...e4 12.Nd4 Nc5 13.f3=) 12.d4+= Nd7 13.de5 Nde5 14.Ne5 Ne5 15.f4 (15.Qd5!? Kh8 16.c5+=) 15...Nd7= 16.Bf3 Nc5 17.Qc2 Re8 (17...Be6 18.Nd5=) 18.Rfe1 (18.Nd5!?=) 18...Be6=+ 19.Nd5 (19.Ba3 Ne4 20.Ne4 fe4 21.Be4 Ba1 22.Ra1+=) 19...Ne4?? (better 19...Bb2 20.Qb2 Nd3=+) 20.Bg7 Kg7 21.Be4 fe4 22.Qe4 Bd5 (22...c6 23.Qd4 Kf7 24.Nc3+–) 23.Qd5+– b6 24.a5 Qf6 (24...Qh4 25.Rf1 Qe7 26.Qd4 Qf6 27.f5+–) 25.ab6 ab6?? (better 25...cb6 26.Ra3 Qe7+–) 26.Ra8 Ra8 27.Qa8 (27.Qa8 Qh4 28.Ra1+–) 1–0. RichardSommer (2200) – Pinoy1996 (2175), lichess.org, 2020.

4.d4 Nf7 5.c4 Bg7 6.Bd3 0–0 7.Qc2 e6 8.Bg6?? (better is 8.Ne2+=) 8...hg6–+ 9.Qg6 Qe8 10.h4 Nh6 11.Qe4 f5 12.Qf3 Nc6 13.a3 Ne7 (13...f4!? 14.Qe2–+) 14.Nd2 c6 15.Nh3 b5 16.Ng5 (16.cb5!? Bb7 17.Nf4=+) 16...Bb7 17.Qe2 a5 18.0–0 (18.cb5!? cb5 19.Qb5 Bg2 20.Rg1–/+) 18...Ba6 19.c5 a4 20.Ndf3 Nd5 21.g3 f4 (21...Qh5 22.Rae1–+) 22.ef4 Ng4 23.Rfe1 Qg6 24.Ne5 Ne5 25.de5 Rad8 26.Rad1 Bh6 27.h5 Qg7 28.Bc1 Bg5 29.fg5 Rf5 (29...Nc3 30.Qc2 Nd1 31.Rd1=+) 30.g4 Nf4 (30...Rg5 31.Bg5 Qg5 32.Rd3=) 31.Bf4 Rf4 32.g6 Rdf8 33.Rf1 Qe7 34.Qe3?? (34.f3 Bc8=) 34...Bc8 (34...Rg4 35.Qg3 Qh4 36.Rd3–+) 35.h6?? (better is 35.f3=) 35...Rg4–+ 36.Kh2 Rg6 37.Rg1 Qh4 38.Qh3 Qf4 39.Kh1–+ Qf2?? (better is 39...Rg1 40.Rg1 Kh8–+) 40.h7 (40...Kg7 41.Rg6 Kg6 42.Rg1 Qg1 43.Kg1+–; better is 40.Rg6 Kh7 41.Rg7 Kh8+–) 1–0. slavisa10 – windmill, Live Game Caissa's Web, 2004.

4.Nf3 Nc6 5.a3 d6 6.d4 Bg4 7.Be2 a5 8.b5 Nb8 9.0–0 e5 10.de5 fe5 11.Nbd2 (better is 11.h3 Bf3 12.Bf3+/– (12.gf3?! Nf6=)) 11...c6? (11...Nf6!?+=) 12.c4 (12.Nc4 Bf3 13.Bf3 Bf8 14.Ne5 de5 15.Qd8 Kd8 16.Be5 cb5 17.Bh8 Nd7+–) 12...cb5 13.cb5 Nd7? (better is 13...Nf6!?+/–) 14.Ne4+– Ngf6?! (14...Bf8 15.Nd6 Bd6 16.Qd6 Qe7+–) 15.Nd6 Kf8 16.Ne5 Be2 17.Qe2 Ne5 18.Be5 (18.Nb7?! Qe7+/–) 18...Qe7 19.Qb2 (19.Qb2 Bg7 20.Rad1+–) 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.Nf3 Nf7 5.c4 Bg7 6.b5 0–0 (6...a6 7.d4=) 7.a4 e6 8.Be2 b6 9.0–0 c6 (9...a6 10.d4+=) 10.Qb3 d5 11.cd5 ed5 12.Nd4 c5 13.Nf3 (13.Bf3 c4 14.Qd1+–) 13...Nd7? (13...a6 14.Nc3 Be6 15.d4=) 14.d4 (better 14.Qd5!? Rb8 15.d4+–) 14...c4+= 15.Qc2 Nd6 (15...Re8!?+=) 16.Ba3 Nb8 17.Nc3 Re8? (better 17...Bf5!? 18.Qb2 Be6+–) 18.Nd5+– Bf5 19.Qc3 Be4 20.Nf4 g5 (20...Bh6 21.Bc4 Nc4 22.Qc4 Kh8 23.Ne6+–) 21.Nh5 a6 22.Bd6 Qd6 23.Qc4 Bd5 24.Qc3 Nd7 (24...Qe6 25.Rfc1+–) 25.Ng7 (25.ba6 Nb8+–) 25...Kg7 26.ba6 Rec8 (26...Nb8 27.Rfc1 Na6 28.Rab1+–) 27.Qb2 Nf8 (27...Nb8 28.Rab1+–) 28.Nd2 Ne6 29.Bb5 h5 (29...f5 30.Qb1 Rf8 31.a5 ba5 32.Ra5+–) 30.Rac1 (30.e4 Bc6 31.d5 Bb5 32.ab5 Nf4+–) 30...h4 (30...f5 31.Rc8 Rc8 32.Bd3+–) 31.Rc8 (better 31.e4!? h3 32.gh3 Nf4 33.ed5 Nh3 34.Kg2 Nf4 35.Kh1 Nd5 36.Rc8 Rc8+–) 31...Rc8 32.Rc1 Ra8 (32...Rc7 33.Rc7 Qc7 34.e4+–) 33.h3 (33.e4!? Be4 34.Ne4 Qd4 35.Qd4 Nd4+–) 33...g4 (33...Ra7 34.Bc4 Nc7 35.e4 Bc4 36.Nc4+–) 34.hg4 Ng5 35.f3 (35.Bc4!? h3 36.f4 Ne4 37.Bd5 h2 38.Kh2 Rh8 39.Kg1 Qd5 40.Rc7 Kh6 41.Qb6 Qd6 42.g5 Kh5 43.Qd6 Nd6 44.gf6 Ra8+–) 35...h3?? (better 35...Qg3 36.Kf1 h3 37.gh3 Nh3+–) 36.e4 (36.Qc2 Nf7+–) 36...Bf7?? (36...Qg3 37.Bf1 hg2 38.Rc7 Kg6–+ (38...Qc7?! 39.Bg2 Bf7 40.e5 Ra6 41.f4–+)) 37.e5+– Qd5 (37...Qd8+–) 38.ef6 Kf6 (38...Kg8 39.Bc6 Qd8 40.Ba8 Qa8 41.Qb5+–) 39.Bc6 Qd6 40.Ba8 Qg3 (40...h2 41.Kh1 Kg7 42.a7+–) 41.d5 (41.Ne4 Ne4 42.Be4 Qb8 43.Rc6 Ke7 44.Qb4 Ke8+–) 41...Kg6 42.Qc2 (42.Qb6 Be6 43.Qf2 h2 44.Kh1 Qf2 45.de6 Qd2=+) 42...Kg7 43.Ne4 (better 43.Nf1 Nf3 44.Kh1 hg2 45.Qg2 Qh4 46.Nh2 Nh2 47.Qb2 Kf8 48.Qh2+–) 43...Nf3 44.Kf1 Nh2?? (44...hg2 45.Qg2 Nh2 46.Qh2 Qh2+–) 45.Ke2 Qg2 46.Kd3 Qf3 47.Kc4 Qg4 (47...Qf4 48.Kb3 Nf3 49.Qc3 Kg6 50.a7 Qe4 51.Bc6 Nd4 52.Kb2 Qg2 53.Ka1 Bd5 54.Qd3 Kg5 55.Qe3 Kh4 56.Qh6 Kg4 57.Bd5 Qd5 58.Rg1 Kf3 59.Qh3 Ke2 60.Rg2 Qg2 61.Qg2 Ke1 62.a8Q Nb3 63.Kb2 Nc5 64.Qe8 Ne4 65.Qee4 Kd1 66.Qge2) 48.Qc3 (better 48.Bc6 Nf3 49.Qc3 Kg8+–) 48...Kf8 (48...Kg8 49.Qg3 Qg3 50.Ng3 b5 51.Kb5 Nf1 52.Rf1 Bg6+–) 49.Qh8 Ke7 50.Qe5 Kf8 (50...Kf8 51.Kb3 Qf3 52.Kb4 Qe4 53.Qe4 Nf1 54.Rc7 Ne3 55.Qe7 Kg7 56.Qf7 Kh6 57.Rc6 Kg5 58.Rg6 Kh4 59.Qh7). Abdullaevich (1825) – Shpatii (1845), lichess.org, 2019.

4.Nf3 Nf7 5.Bd3 Bg7 (5...Nc6 6.b5 Nce5 7.0–0+=) 6.0–0 (6.b5 d6+=) 6...0–0 (6...Nc6 7.b5 Nce5 8.Ne5 Ne5 9.Be2+=) 7.c4 (7.b5 a6+=) 7...e6 (7...Nc6 8.Qb3+=) 8.Nc3 Nc6 9.Qb3 Ne7 (9...a6 10.Be2+=) 10.Ne4 (10.c5 f5+–) 10...e5 (better 10...Nc6+=) 11.b5 (better 11.Rac1+–) 11...f5=+ 12.Neg5 e4 13.Bg7 Kg7 14.Nf7 Rf7 15.Ng5 ed3 16.Qb2 Kg8 (16...Rf6 17.Nh7 Nd5 18.Nf6 Nf6 19.Qc3=+) 17.Qh8= Kh8 18.Nf7 Kg8 (18...Kg7 19.Nd8 Kf8 20.Nb7 Bb7 21.Rfb1=) 19.Nd8 Kf8 20.a4 Ke8 21.Nb7 Bb7 22.Rfb1 a6 23.Ra3 (23.f3 Nc8=) 23...ab5 (23...Nc8 24.f3= (24.Rd3? Be4 25.Rdb3 Bb1 26.Rb1 Nb6–+)) 24.cb5 Nc8 25.a5 c6?? (better 25...Nd6=) 26.a6+– (26.a6 Ra7 27.ab7 Rb7 28.Rab3+– (28.Rd3?! cb5 29.Kf1 Ke7+–)) 1–0. DEFFM – GuestXGBV, freechess.org, 2020.

3.e4 b6

4.a3 Bb7 5.Nc3 Bg7 (5...a5 6.b5+=) 6.d4 (6.Nf3 e6+=) 6...e6 7.d5 ed5 (7...f5 8.ef5 ed5 9.fg6 hg6 10.Bd3 Qe7 11.Qe2+=) 8.Nd5 Nc6 (8...a5 9.Bd3+=) 9.Nf3+/– Nh6 (9...Nce7 10.c4+=) 10.Bc4 Ng4 (10...Nf7 11.0–0+/–) 11.0–0 Nge5 12.Ba2 Ne7 (12...a6!?+/–) 13.Nf6!+– Bf6 14.Be5 Be5 (14...Nc6 15.Bf6 Qf6 16.Bd5+–) 15.Ne5 Qc8? (better is 15...Rf8+–) 16.Qf3 Rf8 (16...Nf5 17.Qc3 Ne7 18.Nd7 Kd7 19.Rad1 Bd5 20.Bd5 Qf8 21.Ba8 Kc8+–) 17.Bf7 Kd8 18.Rad1 d6 (18...Bd5 19.ed5 Nf5+–) 19.Qf6 Be4 20.Rd6!! cd6 (20...Qd7 21.Rd7 Kc8 22.Qe7 Bd3 23.Rc7 Kb8 24.Nc6) 21.Qd6 (21.Qd6 Qd7 22.Qd7#) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.Nf3 Bb7 5.Nc3 Bg7 6.b5 d6 (6...a6!?+=) 7.Nd4+/– f5?? (better is 7...Bc8 8.Bc4 a6+/–) 8.Ne6+– Qc8 9.Ng7 Kf8 10.Nd5 e5 11.d4 Kg7 (11...Bd5 12.de5 (12.ed5?! Kg7 13.de5 de5+–) 12...Kg7 13.Qd5+– (13.ed5?! Qe8+–)) 12.de5 de5 (12...Bd5 13.Qd5 Nd7+–) 13.Be5 Nf6 14.Nf6 Rd8 15.Qf3 Nd7 (15...Rd6 16.Qc3 Kf8 17.Nh7 Ke7+–) 16.Nd7 Kf7 17.Qb3 Ke7 18.Bf6 Kd7 19.Qf7 Kd6 20.Qe7# 1–0. pierre – tyngp, internet, 2009.

3.e4 c6

4.c4 Qb6 5.Qb3 e5 (5...Na6 6.Bc3+=) 6.c5 Qc7 7.Bc4 Nh6 8.Nf3 a5 (8...d6 9.d4+=) 9.a3 (9.d4 d6 10.ba5 ed4 11.Bd4 Nd7 12.cd6 Bd6+–) 9...b5 (9...d6!? 10.d4 dc5 11.bc5 ed4 12.Bd4 Nd7+=) 10.cb6+– Qb6 11.Ne5 a4 (11...d5!? 12.ed5 fe5 13.Be5 Rg8 14.dc6 Nc6 15.Bg8 Ne5+–) 12.Qf3 fe5? (better 12...Bg7 13.Nd3 d6+–) 13.Qf6 (13.Be5?! Rg8+–) 13...Rg8 (13...d6 14.Qh8 Qb7 15.d4+–) 14.Qe5 (14.Bg8?! Ng8 15.Qh8 Ne7 16.Be5 d5+–) 14...Be7 15.Bg8 Ng8 16.Qh8 c5 (16...d5 17.Qg8 Kd7 18.Nc3+–) 17.Qg8 Bf8 18.Bg7 Qd6 19.Nc3 Qe7 20.Bf8 Qf8 21.Qh7 d6 (21...cb4 22.Qg6 Qf7 23.Qf7 Kf7 24.ab4+–) 22.Nd5 Nd7 (22...Na6 23.Qg6 Kd8 24.Qg5 Ke8+–) 23.Nc7 Kd8 24.Ne6 Ke8 25.Nf8 Nf8 26.Qc7 Ra6 27.Qc8 Kf7 28.Qa6 d5 29.Qa7 Ke6 30.Qc5 de4 31.Qf8 g5 32.Qe8 (32.Rc1 e3 33.Rc6 Kd7 34.Qc8 Ke7 35.Qb7 Kd8 36.Rc8) 32...Kf5 (32...Kd6 33.Rc1 Kd5 34.Qc6 Ke5 35.Rc5 Kf4 36.Qf6 Kg4 37.Qg5) 33.Rc1 g4 (33...Kf6 34.Rc6 Kf5 35.Qf7 Kg4 36.h3 Kh4 37.Qh7) 34.Rc5 Kf4 (34...Kf6 35.Rc6 Kf5 36.Qh5 Kf4 37.Rf6) 35.Qf7 (35.Qe5) 1–0. DEFFM – Guestqueenn, freechess.org, 2019.

4.c4 e5 5.Qb3=.

4.Bc4 d5!? 5.ed5 cd5=.

4.Bc4 Nh6 5.Nc3 b5 6.Bb3 a5 7.a3 a4 8.Ba2 Bb7 9.Nf3 e5 10.0–0 Qe7 11.d4 ed4 12.Qd4 Qd6?? (better is 12...Bg7+/–) 13.Qb6+– Bc8 14.Rad1 (better is 14.e5 fe5 15.Ne4+–) 14...Ra6 15.Rd6 (better is 15.Nb5!? Rb6 16.Nd6 Bd6 17.Rd6 Ba6+–) 15...Rb6 16.Rf6 Ke7?? (16...d6+–) 17.Nd5! (17...Kd8 18.Nb6+–) 1–0. Wall,Bill – DML, internet, 2004.

4.d4 Qb6 5.a3 a6 6.c4 Nh6 7.Nf3 a5 8.b5 Bg7 9.Bd3 c5 10.dc5 Qc5 11.Bd4 Qd6 12.c5 Qc7 13.Nc3 e5 14.Nd5 Qd8 15.Be3 0–0 16.Nb6 Ra7 17.c6 bc6 18.Nc8 Rb7 19.Nd6 Rb6 20.Rb1 Ng4 21.Bb6 Qb6 22.Bc4 Kh8 23.0–0 cb5 24.Rb5 Qc7 25.Rb7 Qc5 26.Nf7 Kg8 27.Qd3 h5 28.N7e5 Kh7 29.Nd7 Nd7 30.Qd7 Rf7 31.Qf7 1–0. marekt (2480) – Athony Wills, ChessWorld.net, 2003.

3.e4 d6

4.Nf3 Nc6 5.Bb5 Bd7 6.0–0 Nb4 7.Bd7 Kd7 8.Ng5 h6 9.Nf7 1–0. Trkn – cameron.t, itsyourturn.com, 2000.

4.Nf3 e5 5.Bc4 a6 6.a3 Bd7 (6...Bg7 7.d4+/–) 7.h3 (7.d4 Nc6+/–) 7...b5 8.Ba2 Nc6 9.c3 Be7 (9...Bg7 10.d4+=) 10.Qb3 (10.d4 Nh6+/–) 10...Nh6+= 11.d3 Rf8 12.Bc1 Nf7 13.h4 (13.Qc2 f5+=) 13...Qc8 (13...f5 14.Nbd2=) 14.h5 g5 15.d4 (15.Nbd2 f5=) 15...ed4 (15...g4 16.Nh4 ed4 17.Ng6+=) 16.cd4 Na7 (16...g4 17.d5 gf3 18.dc6 Bc6 19.Qf3+=) 17.e5 (better is 17.Nc3+/–) 17...de5 18.de5 fe5 19.Bb2 Qb7 20.0–0 Qe4 (20...Bc6!?=+) 21.Nbd2 (21.Nc3 Qf5+=) 21...Qb7 (21...Qf4 22.Qc3 c5 23.Bf7 Rf7 24.Ne5 cb4 25.ab4 Qb4+–) 22.Ne5 Ne5 23.Be5 Qc6? (better is 23...0–0–0+–) 24.Bg7 0–0–0 25.Bf8 (25.Qe3 Rfe8 26.Qa7 Qb7 27.Qb7 Kb7+–) 25...Rf8 (25...Bf8 26.Rac1 Qh6 27.Qf7+–) 26.Nf3 (26.Qe3 Bf6 27.Rac1 Qb7+–) 26...h6 (26...Qf6 27.Rae1 Nc6+–) 27.Ne5 Qd6 28.Nd7 (better is 28.Qe3 Bf5 29.Qa7 Qe5 30.Qa8 Kd7 31.Rfd1 Bd6 32.Qf8 Qh2 33.Kf1 Qh1 34.Ke2 Qh5 35.f3 Qe8 36.Qe8 Ke8+–) 28...Qd7 29.Rad1 Qc6 (29...Bd6 30.Qc2+–) 30.Rfe1 (better is 30.Qe3!? Kb8 31.Qe7 Re8 32.Rd8 Rd8 33.Qd8 Nc8+–) 30...Bd8 (30...Bd6 31.Rc1 Qb6 32.Rc2+–) 31.Qe3 (better is 31.Re6 Qb7 32.Qg3 c6+–) 31...Kb8 32.Bd5 Qf6 33.Rf1 (33.Qc5!? Qd6 34.Qc2 Qf4+–) 33...Be7 34.Qe4 (34.Bf3 Bd6+–) 34...Bd6 (34...Nc8+–) 35.Ba8?? (better is 35.Bb7+–) 35...c6= 36.Bc6 Nc6 37.g3 Rh8?? (better is 37...Ne5 38.f4 gf4 39.Rf4 Qg5 40.Rf8 Bf8=) 38.Qc6+– Rd8 (38...Be5 39.Qe4 Rf8+–) 39.Qa6 (better is 39.Qb6 Kc8 40.Rc1 Kd7 41.Rfe1+–) 39...Qe6 (39...Be7 40.Qb5 Ka8+–) 40.Qb5 (40.Qb6 Kc8+–) 40...Ka8 (40...Kc8 41.Qc6 Kb8 42.Qb6 Kc8 43.Rc1 Kd7 44.Rfe1 Qe1 45.Re1+–) 41.Kg2 (better is 41.Qa5 Kb7 42.Qd8+–) 41...Rb8 (41...Qe4 42.f3 Qc2 43.Kh1 Qc8+–) 42.Qa6# 1–0. PoPer – worldwide123qwe, Live Game Caissa's Web, 2004.

4.Nf3 e5 5.d4 Be7 (5...ed4 6.Qd4 Bd7 7.Bc4 Nc6 8.Qd2) 6.Nc3 Bg4 7.h3 Be6 (7...Bf3 8.Qf3 ed4 9.Nd5+–) 8.Bb5 Bd7 9.Bc4 ed4 10.Nd4 (worse is 10.Qd4 Nc6 11.Qd2 Ne5+–) 10...Qc8 11.Nd5 Bd8 12.Nf4 a6 (12...Nc6 13.Nde6 Ne5 14.Ng7 Kf8 15.Nge6 Ke8 16.Be5 fe5 17.Ng7 (17.Nd8?! Qd8 18.Qd5 Nh6+/–) 17...Kf8 18.Nfe6 Be6 A) 19.Be6?! Qb8 20.Nh5 Nf6 (worse is 20...gh5 21.Qh5 Kg7 22.Qf7 Kh6 23.Qf8 Kg6 24.Bf7 Kf6 25.Be8 Kg5 26.h4 Kg4 27.Qf5) 21.Nf6 Bf6+=; B) 19.Ne6 Ke8 20.Ng7 Kf8 21.Qd5+–) 13.Nf5! Bf5 (13...Bf5 14.ef5 Combination; 13...gf5 14.Qh5 Mate attack) 14.ef5 Qf5 (14...Ne7 15.Be6 Nd7+–) 15.Qe2 Ne7 16.Ne6 Nbc6 (16...b5 17.g4 Qe5 18.Be5 fe5 19.Bb3+–) 17.Ng7 (17.Ng7 Kf8 18.Nf5 Nf5 19.Qe6+–) 1–0. pcmvr – axxle (2330), net–chess.com, 2014.

4.f4 e5 5.Ne2=.

4.f4 Bg7 5.Nf3 (5.d4 f5+=) 5...a6 (5...e5 6.Bc4+=) 6.Bc4 (6.d4 f5 7.Nbd2 Nf6 8.ef5 Bf5=) 6...Nh6 (6...Nc6 7.a3+=) 7.0–0+/– e6 8.e5 (8.Nd4 f5+/–) 8...d5 (better is 8...Nc6=) 9.ef6?? (better is 9.Be2+=) 9...Bf6–+ 10.Bf6 Qf6 11.Bd5 (11.Na3 dc4 12.Nc4 Qf4–+) 11...ed5 12.Re1 Be6 13.Ne5 0–0 14.Nc3 Nc6 15.Nc6 bc6 16.g3 Bg4 17.Qc1 Qd4 18.Kh1 Bf3# 0–1. grain – 4thehellofit, Live Game Caissa's Web, 2005.

3.e4 e6

4.a3 d5 5.e5 +=.

4.a3 Bg7 5.Bc4 (5.Nf3 Ne7+=) 5...Ne7 6.Nc3 c6 (6...f5 7.ef5 Nf5 8.Nf3=) 7.d3 (7.Nf3 d5 8.Bb3 f5 9.ed5 ed5=) 7...d5 8.Ba2 (8.Bb3 e5=) 8...0–0 (8...a5 9.b5=) 9.f4 (9.Nf3 Bd7=) 9...de4 (9...a5 10.Qf3+=) 10.de4 Qd1 (10...a5!?=) 11.Rd1+/– (worse is 11.Kd1 a5=) 11...Kh8 12.Nf3 White prepares e5 12...f5 (12...Na6 13.Ne2+/–) 13.e5 Nd5 (13...a5!?+/–) 14.Nd5+– (14.Bd5?! ed5 15.b5 Re8+=) 14...cd5 15.c4 dc4 16.Bc4 h6 17.h4 b6 18.Rd6 Re8 19.Nd4 Bb7 20.0–0 Bd5 21.Bd5 ed5 22.Rd5 g5 23.Nf5 gh4 24.Ng7 Kg7 25.e6 Kf8 26.f5 Nc6 27.Rd7 Re7 28.Rfd1 Ke8 29.Bf6 Rd8 30.Be7 Rd7 31.Rd7 Ne7 32.f6 (32.f6 Nc6 33.f7 Kf8 34.b5 h3 35.bc6 h2 36.Kh2 b5 37.c7 b4 38.c8Q Kg7 39.f8Q Kg6 40.Qf4 ba3 41.Qe8) 1–0. Mlynek,Zbigniew – NN, ZDK–Sarzyna Poland, 1985.

3.e4 Bg7

4.a3 e6 5.d4 Ne7 6.Nd2 0–0 7.Bd3 d6 8.Ne2 c6 (8...f5 9.0–0+=) 9.0–0+= Nd7 10.c4 (10.Re1 f5+=) 10...b6 (10...f5 11.Re1+=) 11.c5 (11.Nf3 e5+=) 11...d5 (11...bc5 12.Nf4 Nb6 13.Qb3+=) 12.ed5 (12.Nf4 Nb8+=) 12...cd5 (12...Nd5 13.Nc3+=) 13.Re1 (13.Nf4!? Nb8 14.Qe2+–) 13...bc5+= 14.dc5 Nc6 (14...Rb8 15.Nb3+=) 15.Nd4 (15.Rc1 Nde5 16.Bc2 Qc7+–) 15...Nd4+= 16.Bd4 e5 17.Bb2 d4 (better 17...Qc7!?+=) 18.Qb3 Kh8 19.Nc4 (better 19.Qd5 Nb6 20.Qd8 Rd8 21.cb6 ab6 22.Nc4+–) 19...Nb8?? (better 19...Ba6+–) 20.Nd6 (better 20.Be4 Nc6 21.Bc6 Rb8+–) 20...Nc6 (20...a6 21.Nf7 Rf7 22.Qf7+–) 21.Be4 Qd7? (21...Bd7+–) 22.Bc6 (better 22.Qf3 Nb4 23.ab4+– (23.Ba8?! Nc2+–)) 22...Qc6+– 23.Nf7 (23.f4 Bb7 24.Qg3 ef4+–) 23...Rf7+= 24.Qf7 Bb7 (better 24...Be6!? 25.Qe7 Bd5+=) 25.f3+– Rf8 26.Qc4 a6 27.Bd4 (better 27.a4!?+–) 27...ed4= 28.Re7 (28.Re6 Qc8=) 28...f5 29.Rae1 Bc8 30.Ra7 Qf6 31.Ree7 Rg8 (31...d3 32.Qd3 Qa1 33.Kf2 Bd4 34.Ke2=) 32.Rf7 (32.Rac7 Qf8 33.Qd5+–) 32...d3?? (32...Be6 33.Qa6 Qe5 34.Rg7 Rg7 35.Ra8 Bg8=+) 33.Rf6+– Bf6 34.Qd3 Bg5 (34...Rd8 35.Qc4 Bg7+–) 35.Qd4 Bf6 36.Qf6 Rg7 37.Qg7 1–0. BeepBeepImAJeep (2565) – yak777 (1695), lichess.org, 2017.

4.a3 Nh6 5.d3 (5.Nf3 0–0+=) 5...0–0 (5...e5 6.Nf3=) 6.Nd2 (6.d4 f5 7.Bc4 Nf7 8.ef5 gf5+=) 6...f5 (6...d6 7.Ngf3+=) 7.Bg7+= Kg7 8.Ngf3 fe4 9.de4 e6 (9...d6 10.Bc4+=) 10.Be2 (10.Nc4 Nf7+=) 10...Qf6 (10...d6 11.e5+=) 11.0–0 (11.e5 Qf4 12.g3+=) 11...c6 (11...Nf7!?+=) 12.e5+– Qe7 (12...Qf4 13.Nc4+–) 13.Ne4 Nf5 14.g4 (14.c4 b6+–) 14...Nh6 (14...Nh4 15.Nh4 Qh4 16.Qd6+–) 15.Nfg5 Na6 (15...b6 16.f4+–) 16.f4 (16.Qd6 Qd6 17.Nd6 Nc7+–) 16...Nc7+– 17.Qd2 (17.Nf6 Rh8+–) 17...Nd5 (17...b5!?+–) 18.c4+– Nb6 (18...Nc7 19.Qd6 Qd6 20.Nd6+–) 19.a4 Rb8 (19...Ng4 20.Nd6 Nh6 21.a5+–) 20.Nd6 a6 21.Qe3 Na8?? (21...Qd8+–) 22.Qa7 1–0. Janek – zifort, internet, 2016.

4.b5 c6 5.c4 cb5 6.cb5 Qa5 (6...d5 7.ed5 Qd5 8.Nc3+=) 7.Qc2 a6?? (better is 7...Kd8+=) 8.Qc8+– Kf7 9.a4 (better is 9.Bc4!? e6 10.Qb7 ab5 11.Qb5 Qb5 12.Bb5 Ne7+–) 9...Qd8 (9...Qb6+–) 10.Qd8 (10...ab5 11.Bb5+–) 1–0. Taulien,Hans_Juergen – Reichelt,Ben, remoteschach.de, 2002.

4.b5 d6 5.Bc4 Nd7 6.a4 (6.Nf3 e5+=) 6...Nc5 7.Qf3 (7.Qe2 e5+=) 7...h5 (7...e5 8.d4 ed4 9.Bd4=) 8.d4+= Bg4 9.Qe3 Bh6 10.f4 (better 10.Qg3 Ne4 11.Qb3+–) 10...Nd7? (better 10...Be6 11.Bd5 Bd5 12.ed5 Nd7+–) 11.h3+– Nb6 12.Bg8 (12.hg4 Nc4 13.Qb3 Nb2=+) 12...Rg8 (12...Bh3 13.a5 Bg2 14.Rh2+– (14.ab6?! Bh1 15.Bd5 ab6+–)) 13.hg4 Nc4 14.Qb3 Nb2 (14...d5 15.Ne2 Nb2 16.ed5 Qd6+–) 15.Qg8 (15.Qg8 Kd7 16.Qg6+–) 1–0. GuestRDZZ – GuestFHVQ, freechess.org, 2019.

4.b5 e5 5.Bc4 Ne7 6.d4 d6 (6...f5 7.de5 fe4 8.Nc3 Be5 9.Rb1=) 7.Ne2 (7.Nf3!? a6 8.de5 fe5 9.Nc3 ab5 10.Nb5+–) 7...a6+= 8.a4 ab5 (8...f5 9.0–0 fe4 10.de5=) 9.ab5+– Ra1 10.Ba1 Nd7 11.0–0 Nb6 (11...c6 12.Ba2+–) 12.Bb3 Bg4 (12...d5 13.ed5 Ned5 14.c4+–) 13.Qd3 (13.h3 Bd7 14.Qd3 Qc8+–) 13...Qa8 (13...Qd7 14.f4+–) 14.Nbc3 (better 14.Nd2+–) 14...ed4? (better 14...Qc8+–) 15.Nd4+– d5? (15...Kf8+–) 16.f3 (16.Qg3 h5 17.Qc7 Qd8 18.Qb7 0–0+–) 16...de4 (16...Bd7 17.Nd5 (17.ed5?! f5+–) 17...Nbd5 18.ed5+– (18.Bd5?! Nd5 19.ed5 0–0+–)) 17.Qe4 (better 17.Ne4 Bc8 18.Nc5 Nbd5+–) 17...Bd7 (17...Bc8 18.Re1 Qa3+–) 18.Re1 Nbc8 (18...Qd8 19.Nd5 Nbd5 20.Qd5+–) 19.Nd5 f5 (19...Kd8 20.Ne7 Qa7+–) 20.Nc7 Kd8 21.Nde6 Be6 22.Ne6 Kd7 23.Rd1 (23.Bg7?! fe4 24.Nc5 Ke8 25.Bh8 Qa7=) 23...Nd6 24.Rd6 Kd6 (24...Kc8 25.Qc4 Nc6 26.Bg7 Qa7 27.Bd4 Qd4 28.Nd4 Re8 29.bc6 b5 30.Qb5 Re1 31.Kf2 Rf1 32.Kf1 Kc7 33.Rd7 Kc8 34.Qb7) 25.Qd3 Nd5 (25...Bd4 26.Qd4 Nd5 27.Qd5 Ke7 28.Qc5 Kd7 29.Qc7 Ke8 30.Ng7 Kf8 31.Qd6) 26.Qd5 (26.Ng7 Qa1 27.Kf2 Qe5=+) 26...Ke7 27.Qc5 Ke8 (27...Kd7 28.Qc7 Ke8 29.Ng7 Kf8 30.Qd6) 28.Ng7 (28.Ng7 Kd7 29.Be6 Kd8 30.Bf6) 1–0. GuestZQRW – GuestJBKG, freechess.org, 2020.

4.c4 e5 5.Nf3 b6 6.d4 (6.Nc3 Bb7+=) 6...ed4= 7.Nd4 (7.Qd4 Nc6 8.Qd5 Bb7=) 7...Bb7 (7...Qe7 8.Nc3 Qb4 9.Ndb5=) 8.Bd3 (8.f3 Qe7 9.Nc2 Nc6+=) 8...Ne7 (8...Qe7!?=) 9.0–0+= 0–0 (9...Nbc6 10.b5 Ne5 11.Nc3+=) 10.Qb3 (10.c5 Nbc6+=) 10...Kh8 11.b5 d6? (better 11...f5 12.ef5 Nf5 13.Nf5 gf5 14.Bg7 Kg7+=) 12.Ne6+– Qd7?! (12...Qc8 13.Nf8 Qf8+–) 13.Nf8 Bf8 14.Bf6 Bg7 15.Qb2 (better 15.Bg7 Kg7 16.Nc3+–) 15...Nec6 (15...Ng8 16.Bg7 Qg7+–) 16.bc6 Nc6 17.Bg7 Qg7 18.Nc3 Na5 (18...Rf8 19.Rab1+–) 19.Rac1 (19.Rab1 Re8+–) 19...Kg8 (19...Nc6 20.Rb1+–) 20.Qb5 (20.Rb1 c6+–) 20...Rd8 (20...h6 21.Rfd1+–) 21.Qg5 Re8 (21...Nc6 22.Nd5+–) 22.Nd5 Re5 (22...Rf8 23.Rcd1+–) 23.Qd8 Qf8 24.Qc7 Bd5 (24...Re8 25.f4 Kh8 26.f5 gf5 27.Rf5+–) 25.cd5 Rh5 (25...Re7 26.Qd6 Nb7+–) 26.Qa7 Qf4 27.Rc8 (27.Rc8 Qf8 28.Rfc1 Re5 29.Qd7 Qd8 30.Rd8 Re8 31.Re8) 1–0. GuestKYJB – GuestLQRL, freechess.org, 2020.

4.c4 e5 5.Nf3 d6 6.d4 ed4 7.Nd4 Nh6 (7...Ne7 8.Bd3+=) 8.Qb3 (8.Bd3 0–0+=) 8...Bd7 (8...Qe7 9.Nc3+=) 9.c5 (9.Bd3 a5+=) 9...dc5 (9...Qe7 10.Nc3+=) 10.Ne6 Be6 11.Qe6 Qe7 (better 11...Kf8!? 12.bc5 Nc6+=) 12.Qc8+– Qd8 13.Bb5 Nd7 14.Bd7 Kf8?? (better 14...Ke7 15.Qd8 Rhd8+–) 15.Qb7+– Rb8 16.Qc6 (16.Qa7 Ke7 17.Bc6 cb4+–) 16...Rb4 (16...cb4 17.0–0+–) 17.Ba3 (17.Qc5 Qe7 18.Qe7 Ke7+–) 17...Rb1 (17...Qe7 18.Nd2 Qd6+–) 18.Rb1 (18.Rb1 Nf7 19.Bc5 Kg8 20.Qe6+–) 1–0. GuestWMQY – GuestRDZX, freechess.org, 2018.

4.Bc4 b6 5.b5 Bb7 6.d3 (6.a4 Be4 7.Nf3 Bb7+=) 6...a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 (9...e6 10.Nf3+=) 10.Nc3 e5 (better 10...Nh6!?+=) 11.Nf3+– Ne7 (11...Nh6 12.0–0+–) 12.0–0 (12.d4!? d5 13.bc6 Bc6 14.ed5 Nd5+–) 12...cb5+– 13.Nb5 Na6?? (better 13...d5 14.ed5 Bd5 15.Bd5 Nd5+–) 14.Nd6+– Kf8 15.Nb7 Nc5 1–0. DEFFM – GuestQLSM, freechess.org, 2019.

4.Bc4 b6 5.Ne2!?+/–.

4.Bc4 b6 5.e5 e6 6.d4 (6.Qf3 c6 7.Qf4 fe5 8.Be5 Nf6=+) 6...fe5 7.de5. Maradona (1750) – Ramiz, internet, 2006.

4.Bc4 Nc6 5.a3 Nh6 6.Ne2 e6 7.h3 (7.0–0 0–0+=) 7...Ne7 (7...0–0 8.d4=) 8.0–0+= 0–0 9.f4 (9.d4 d5 10.Bd3 de4 11.Be4 Nf7+=) 9...d5= 10.e5?? (better 10.Bd3=) 10...dc4–+ 11.ef6 Bf6 12.Bf6 Rf6 13.Nbc3 Nef5 (better 13...Nd5–+) 14.g4–/+ Nd4 15.g5 Ne2 (15...Rf7!? 16.gh6 e5 17.Rf2–+) 16.Qe2 Qd4 (better 16...Rf4! 17.gh6 Qg5 18.Qg2 Qg2 19.Kg2 Rd4–/+) 17.Qe3= Qe3 18.de3 Rf5 19.gh6 e5 (19...Rh5 20.Rf3=) 20.e4 (20.Nd5!?+=) 20...Rh5= 21.fe5 (21.Nd5 Rh6 22.Nc7 Rb8 23.fe5 Bh3=) 21...Re5 (21...Bh3 22.Rf2=+) 22.Rf3 Rh5 (22...Be6 23.Rd1=) 23.Raf1 (better 23.Nd5!? Rh6 24.Nc7+=) 23...Be6 (23...Bh3 24.R1f2 Rg5 25.Kh1=+) 24.Rf6 (24.Kg2 Rd8=) 24...Bh3 25.R1f3 (25.R1f2 Rh6 26.Rf7 Be6 27.Rc7 Rh3=) 25...Rg5 (better 25...Rh6!? 26.Rf7 Bg4–/+) 26.Kh2= Bg2? (better 26...Bg4 27.R3f4 c6+=) 27.Rf2+– Rd8 (27...Be4 28.Ne4 Rh5 29.Kg3 Rh6 30.Nc5+–) 28.Rg2 Rg2 (28...Rh5 29.Kg3+–) 29.Kg2 Rd2 30.Kf3 (better 30.Kg1 c6 31.e5+–) 30...Rc2 (30...Rh2 31.Nd5 Rh6 32.Nc7 Rh3 33.Kf4 Kg7 34.Ne8 Kg8+–) 31.Nd5 Rd2 (31...Rc3 32.Kg4 Rg3 33.Kg3 c6 34.Ne7 Kh8 35.Rf8) 32.Ne7 Kh8 33.Rf8 1–0. AhmedSultanov – Manrad, lichess.org, 2019.

4.Bc4 Nh6 5.Nf3 e6 6.0–0 0–0 7.b5 b6 (7...a6 8.Nc3 ab5 9.Nb5+=) 8.a4 (8.Nc3 a6+–) 8...Bb7 (8...f5 9.Bg7 Kg7 10.d3+=) 9.Re1 d5 10.Ba2 c6 (10...Nd7!? 11.Nc3 Ne5+–) 11.Nd4 Qd7 (11...Re8 12.ed5 ed5+–) 12.Ne6! Qe6? (12...Re8 13.Nf4 Nf7 14.ed5 Re1 15.Qe1 cb5 16.ab5 Qb5+–) 13.ed5 Qf5 (13...Qc8 14.dc6 Kh8+–) 14.dc6 Kh8 15.cb7 Ng4 16.Qg4 (16.ba8N?! Qf2 17.Kh1 Qh4+–) 16...Qg4 17.ba8Q Nc6 18.Qf8! Bf8 (18...Bf8 19.Bf6 Mate attack) 19.Bf6 Bg7 20.Re8 1–0. DEFFM – GuestRSFM, freechess.org, 2019.

4.d4 e6 5.Nf3 Qe7 6.a3 b6 7.Bd3 Ba6 8.c4 Bb7 9.Nc3 d6 (9...f5 10.e5+/–) 10.0–0 e5 11.Nd5 Bd5 (11...Qf7 12.Rb1+–) 12.cd5 ed4 (12...Bh6 13.Qa4 Kf7 14.b5+–) 13.Qa4 Kd8 (13...Kf7+–) 14.Nd4 (14.Bd4?! Nh6+–) 14...Nh6 (14...a6+–) 15.Ne6 Kc8 16.Ba6 Na6 17.Qa6 Kb8 (17...Kd7 18.Rfc1 c5 19.Qb7 Ke8 20.Qa8 Kf7+–) 18.Nd4 Qe4 19.Nc6 1–0. b4_player (2050) – thecorm, GameColony.com, 2002.

4.d4 e6 5.Nf3 Ne7 6.Bd3 0–0 7.0–0 b6 8.c4 Bb7 9.Nbd2 c6 (9...f5 10.e5+=) 10.Qe2 d5 11.Rae1 de4 12.Ne4 Qc7 13.Nc3 Nd7? (better is 13...Bc8!?+/–) 14.Qe6+– Rf7 15.Ne4 Nf8 16.Qd6 Rc8? (better is 16...Qd8+–) 17.Qc7 Rc7 18.Nd6 Nf5 (18...Rd7 19.Nf7 Kf7 20.Re3+–) 19.Nf7 (< 19.Nf5 gf5 20.Bf5 Rfe7+–) 19...Kf7 20.Bf5 gf5 21.Nh4 Bc8 22.d5 cd5 23.cd5 Ng6 (23...Rc4 24.Rc1 Rh4 25.Rc8 Rb4 26.Rc7 Kg6 27.Rc2+–) 24.Rc1 Rc1 25.Rc1 (25.Bc1?! Nh4 26.Be3 Bb7+=) 25...Bd7 26.Rc7 Ke8 27.Nf5 Bf5 (27...Bf8 28.Ne3+–) 28.Rg7 (28...Nf4 29.d6+–) 1–0. kamret (2200) – burlak (1840), GameColony.com, 2003.

4.e5 b6 5.ef6 Nf6 6.Nf3 Bb7 7.d3 d6 (7...0–0 8.d4=+) 8.Be2 (8.Qe2 e5=+) 8...Nbd7 (8...e5 9.d4 ed4 10.0–0=) 9.0–0 (9.Ng5 Bg2 10.Ne6 Bh1 11.Nd8 Rd8=) 9...e5 10.Nbd2 (10.d4 e4 11.Ng5 Qe7=) 10...Qe7 11.Ne4 (11.a3 0–0=) 11...0–0–0 (11...Ne4 12.de4 Be4 13.Re1–/+) 12.Re1 (12.Nf6 Qf6 13.a4 h5=) 12...Kb8 (12...Ne4 13.de4 Be4 14.Ba6 Bb7 15.Qe2=+) 13.Nf6 Bf6 (13...Qf6 14.Qd2=) 14.h3 (14.a4 d5 15.c3 a6=) 14...c5 (14...h5!?=) 15.bc5+= Nc5 16.c4 (16.a4 e4 17.Bf6 Qf6 18.de4 Rhe8+= (worse 18...Be4 19.a5+–)) 16...Rc8 (16...Rhe8 17.d4 ed4 18.Bd4 Bd4 19.Qd4 Bf3 20.Bf3 Qe1 21.Re1 Re1 22.Kh2=) 17.a4 Rhd8 (17...e4!? 18.Bf6 Qf6 19.de4 Ne4+=) 18.a5+– ba5 19.Ra5 d5 20.Rc5 (better 20.cd5!? Rd5 21.Qb1+–) 20...Rc5= 21.Qa1 (21.Ba3 dc4 22.Bc5 Qc5=) 21...dc4=+ 22.dc4 e4?? (better 22...Qc7=+) 23.Nh4 (better 23.Bf6 Qe8 24.Be5 (24.Bd8?! ef3 25.Bf3 Qd8+–) 24...Ka8 25.Bd4 Rd4 26.Nd4+–) 23...Bb2–+ 24.Qb2 Rdc8 (better 24...Qh4 25.Rb1 Rc7–+) 25.Bg4 (better 25.g3–/+) 25...Rc4?? (better 25...Qh4 26.Bc8 Rc8–+) 26.Bc8= Rc8 (better 26...Kc8 27.Nf3 Rc7=) 27.Rc1?? (better 27.Nf3!=) 27...Rc1–+ (27...Qh4?! 28.Ra1–+) 28.Qc1 Qc7 (better 28...Qh4 29.Qb2 a6–+) 29.Qc7 (better 29.Qa1–+) 29...Kc7 30.f3?? (30.Kf1–+) 30...a5 31.g4 (31.fe4 Be4 32.Kf2 a4–+) 31...ef3 32.Nf3 (32.Kf2 a4 33.Nf3 Bf3 34.Kf3 a3–+) 32...Bf3 33.Kf2 a4 34.Kf3 a3 35.Ke2 (35.Kf4 a2 36.Kg5 a1Q 37.h4 Qg7 38.Kf4 Qh6 39.Kg3 Qe3 40.Kg2 Qf4 41.g5 Qh4 42.Kf1 Qc4 43.Ke1 Qc1 44.Ke2 Qc3 45.Kf2 Qd2 46.Kf3 Kd6 47.Ke4 Qc3 48.Kf4 Qd3 49.Kg4 Ke5 50.Kh4 h5 51.gh6 Kf4 52.h7 Qg3) 35...a2 36.Kd2 a1Q 37.Kc2 Qa4 (37...Qh1 38.g5–+) 38.Kc3 Kc6 39.Kd3 Kd5 40.Ke2 (40.Kc3 Qc4 41.Kb2 Qb4 42.Kc1 Qc3 43.Kb1 Kc4 44.Ka2 Qd2 45.Kb1 Kc3 46.g5 Qb2) 40...Qd4 (40...Qe4 41.Kf2 Qf4 42.Ke1 Qe3 43.Kf1 Ke4 44.Kg2 Qf3 45.Kh2 Qf2 46.Kh1 Kf3 47.g5 Qg2) 41.Kf1 (41.Kf3 Qe4 42.Kf2 Qf4 43.Ke2 Ke4 44.Kd1 Kd3 45.Ke1 Qf3 46.g5 Qe2) 41...Ke4 (41...Qd2 42.Kg1 Ke4 43.Kf1 Kf3 44.g5 Qd1) 42.Kg2 Qd3 (42...Qd3 43.h4 Qf3 44.Kh2 Qf2 45.Kh3 Kf4 46.g5 Qg3) 0–1. SieStein – Bobbba3x, lichess.org, 2019.

4.e5 fe5 5.Nf3 d6 6.d4 Bg4 7.Be2 (7.h3 Bf3 8.Qf3 ed4=) 7...Bf3 (7...ed4 8.Nd4 Be2 9.Qe2=+) 8.Bf3 c6 9.de5 Be5 (9...Nd7!?=+) 10.Be5= de5 11.Qd8 Kd8 12.b5 (12.Nd2 a5=) 12...Nf6 (12...cb5?? 13.Bb7 Nf6 14.Ba8+–) 13.bc6 (13.Nc3 Kc8=) 13...bc6 (13...Nc6 14.Bc6 bc6 15.Nc3=+) 14.Nc3= Kc7 15.Nb5 Kb7 16.Rb1 Kc8 17.Nc3 Rd8 18.0–0 h5 19.Ne4 (19.Rfe1 Rd2 20.Rb2 g5=) 19...Ne4 20.Be4 g5 21.Bf5 Kc7 22.Rfe1 Rd5 23.c4 Ra5 24.Re5?? (better 24.a3=) 24...Re5–+ 25.Bc2 (25.Bg6 Nd7–+) 25...a6 26.g3 (26.Kf1 Nd7–+) 26...Nd7 27.Kg2 (27.Bg6 g4 28.Kf1 Nb6–+) 27...Rb8 (27...Re2 28.Bg6 Rf8 29.Rf1–+) 28.Rd1 (28.Rb8 Kb8 29.Bd1 g4–+) 28...Rb2 29.Bb3 (29.Bd3 Ra5 30.Bb1 Ne5–+) 29...a5 (better 29...Nf6 30.Rf1–+) 30.Kf3 (30.Rf1 Nc5 31.Bd1 g4–+) 30...Rf5 31.Ke4 Rff2 32.h4 (32.Kd4 c5 33.Kc3 Rbe2–+) 32...gh4 (32...Rbe2 33.Kd4 e5 34.Kd3 Nc5 35.Kc3 Rf3 36.Rd3 Rd3) 33.gh4 (33.Rd7 Kd7 34.gh4–+) 33...Rbe2 34.Kd3 (34.Kd4 e5 35.Kd3 Nc5 36.Kc3 Rf3 37.Rd3 Rd3) 34...Nc5 35.Kc3 (35.Kd4 Kb6 36.Rd2 e5 37.Kc3 Rd2 38.Bc2 Rc2) 35...Nb3 (35...Rf3 36.Kd4 Ne6) 36.ab3–+ Re3 (36...c5 37.Rd5 Kc6 38.Rd1 e5 39.Rd8 e4 40.Rc8 Kd6 41.Rd8 Ke7 42.Re8 Ke8 43.b4 Rf3) 37.Kd4 Rh3 (37...Rb3 38.Re1–+) 38.Re1 Rf7 (38...Rh4 39.Ke5–+) 39.Re4 (39.Re5 Rf4 40.Kc5 Kd7–+) 39...Kd6 40.c5 Kd7 41.Kc4 (41.Re3 Rf4 42.Kd3 Rfh4 43.Rh3 Rh3 44.Kc2 h4–+) 41...e6 (41...e5 42.b4 ab4 43.Kb4 Rf8 44.Rc4 Rb8 45.Ka4 Ra8 46.Kb4 Rha3 47.Rd4 ed4 48.Kc4 R8a4) 42.Kd4 (42.b4 ab4 43.Kb4 Rf8 44.Rd4 Kc7 45.Re4 e5 46.Re3 Re3 47.Ka5 Rf4 48.Ka6 Ra3) 42...Rg7 (42...Rb3!? 43.Re1–+) 43.Kc4 (43.Rf4 Rb3 44.Ke5 Rc3–+) 43…Rg4 (43...Rg4 44.Kd4 Rhh4 45.Rg4 Rg4 46.Kd3 h4 47.Kc3 h3 48.Kd3 h2 49.Kc2 e5 50.Kc3 h1Q 51.Kc2 Rg2 52.Kd3 Qh3 53.Ke4 Re2) 0–1. aravind555 (1860) – smidasek (1840), lichess.org, 2020.

4.Qf3 b6 5.Bc4 e5 (5...Ba6 6.Ba6 Na6 7.Qa3+=) 6.Be5+– d6 (6...Bb7 7.Bg3+–) 7.Bb2 Qe7 8.Nh3 (8.Ne2 Bb7 9.d3 Nd7+–) 8...Be6? (better 8...Bh3!? 9.Qh3 Qe4 10.Qe3 Qe3 11.fe3 c6+=) 9.Be6+– Qe6 10.Nc3 Ne7 11.0–0 Nd7 12.Rfe1 (12.Nd5 Nd5 13.ed5 Qg8 14.Rae1 Kd8+–) 12...0–0 (12...Ne5 13.Qg3+–) 13.Nd5 Rac8 14.Qb3 c6?? (better 14...Nd5 15.ed5 Qg4+–) 15.Ne7 (better 15.Nhf4 Qd5 16.ed5 Nd5+–) 15...Kf7 16.Nc8 Rc8 17.Nf4 (17.Qa3 Bh6+–) 17...Qb3 18.ab3 Re8 (18...Bh6 19.Nd3 Ra8 20.f4+–) 19.Ra7 Ke7 (19...Rd8 20.b5! cb5 21.Bd4+–) 20.b5! Kf7 (20...cb5 21.Nd5 Double attack) 21.Rd7 Re7 22.Re7 Ke7 23.bc6 Kd8 24.Ne6 White intends e5 24...Kc8 (24...Ke8 25.Ra1 Kf7 26.c7 g5 27.c8Q b5 28.Qd7 Kg6 29.Qg7 Kh5 30.Qh7 Kg4 31.h3) 25.Ng7 (25.Ra1 Kb8 26.c7 Kb7 27.Ra8 Ka8 28.c8Q Ka7 29.Nc7 d5 30.Qa8) 25...Kc7+– 26.Bf6 Kc6 27.e5 d5 28.e6 h5 (28...Kb5 29.e7 Kc6 30.e8Q Kd6 31.Re6 Kc5 32.Be7 Kd4 33.Qa4) 29.e7 Kc5 (29...b5 30.e8Q Kc7 31.Bd8 Kc8 32.Re7 g5 33.Bb6) 30.e8Q b5 (30...Kd6 31.Be5 Kc5 32.Ne6 Kb4 33.Qa4) 31.b4! Kb4 (31...Kb4 32.Bc3 Mate attack) 32.Qc6 d4 (32...Ka5 33.Ra1 Kb4 34.Bc3) 33.Rb1 Ka5 (33...Ka4 34.Qa8) 34.Qb5 1–0. rimazu – samantho, net–chess.com, 2018.

4.Nf3 a5 5.b5 +=.

4.Nf3 a6 5.Bc4 b5 6.Bb3 e6 7.a4 c6 (7...Bb7 8.Qe2+=) 8.0–0+– Ne7 9.d4 0–0 (9...d5 10.Nc3+–) 10.ab5 cb5 11.d5 e5? (better 11...Kh8+–) 12.d6+– Kh8 13.de7 Qe7 14.Nc3 Bb7 15.Nd5 Bd5 16.Bd5 Ra7 17.c4 Qb4 (17...Nc6+–) 18.Ba3 Qa3 (18...Qc3 19.Qb1 Rc8 20.Bb4 Qa1 21.Qa1 bc4 22.Rc1+–) 19.Ra3 b4 20.Ra5 (20.Ra4 a5+–) 20...Nc6 (20...Rc8 21.Qb3 Bf8 22.Rd1+–) 21.Bc6 dc6 22.Qd6 Rc8 (22...b3 23.Qc6 Rb8 24.Ra6+–) 23.Qb4 Raa8 (23...h6 24.Qb6 Rd7 25.Qa6+–) 24.Qa4 Bf8 25.Ra6 (25.Ra6 Ra6 26.Qa6+–) 1–0. DEFFM – GuestKDVP, freechess.org, 2020.

4.Nf3 b6 5.d4+/– Bb7 6.Bd3 Nh6 7.0–0 0–0 8.Nbd2 d6 9.d5 c6 (9...c5 10.a3+/–) 10.Nd4 Qd7 11.Ne6 Rc8 12.c4 Na6 13.Qa4 (13.Ng7?! Nb4 14.Nb3 Kg7=) 13...Nc7 14.Nd4 b5 15.dc6 Bc6 16.cb5 Bb7 17.Nc6 a6 18.Na5 Rcb8 19.Qb3 e6 20.b6 Ne8 21.Nb7 Rb7 22.Bc4 Kf7 23.Bd4 Ng8 (23...Ng4+–) 24.Qd3 Ne7 (24...Rbb8 25.Ba6 d5 26.ed5 ed5 27.Bb5+–) 25.Ba6 Rbb8 26.b5 (26.b5 f5 27.b7 Rb7 28.Bb7 Qb7 29.Bg7 Kg7 30.a4+–) 1–0. Luzuriaga,Norberto Horacio – Dubleumortier,Alain, corr SOK–98–132, 2000.

4.Nf3 c6 5.Nc3 Qb6 6.a3 d6 7.Bc4 Nh6 8.0–0 Bg4 9.h3 Bf3 10.Qf3 (< 10.gf3 a5=) 10...c5 (better is 10...Nd7!?+/–) 11.Nd5+– Qc6?? (better is 11...Qd8+–) 12.Bb5!! Qb5 13.Nc7 Kf7 (13...Kd8 14.Nb5 (14.Na8?! a5+/–) 14...Kc8 15.d4+–) 14.Nb5 (14.Na8?! Na6 15.c4 Qc4+=) 14...Nc6 15.Qb3 e6 (15...Kf8 16.bc5 dc5 17.Nc7+–) 16.Nd6 Ke7 17.Nb7 Rab8 (17...cb4 18.Nc5 Nd8 19.ab4+–) 18.Nc5 Rhd8 19.Qe6 Kf8 20.Qc6 (better is 20.Bf6 Bf6 21.Qf6 Kg8 22.Qc6 Rbc8 23.Qe6 Nf7+–) 20...Rbc8 21.Ne6 Ke7 22.Qa6 Rd2 23.Qc8 Rd6 24.Ng7 (24.Rad1 Kf7 25.Qc7 Ke8 26.Rd6 f5 27.Rd8) 24...Kf7 (24...Rd7 25.Rfd1 Rd2 26.Rd2 Nf5 27.Rd7) 25.Qc7 Kg8 (25...Rd7 26.Qd7 Kg8 27.Ne6 Nf5 28.Qe8) 26.Qd6 Kg7 (26...Nf7 27.Qf6 Kf8 28.Rad1 Kg8 29.Ne6 Ne5 30.Rd8) 27.Qf6 Kg8 28.Qg7# 1–0. market (2165) – LOUDNEGRO, GameColony.com, 2002.

4.Nf3 c6 5.d4 e6 6.e5 d5 7.ed6 Qd6 8.Ba3 (8.a3 Ne7+=) 8...Qd8 9.Be2 Ne7 10.0–0 0–0 11.Nbd2 (11.Re1 Nd5+=) 11...b5 (11...Nd5 12.Ne4=) 12.c4 a6 13.d5 (better 13.Bc1!?=) 13...ed5 14.cd5 Nd5 15.Qb3 Kh8 16.Ne4 (16.Rfe1 Re8–/+) 16...f5 17.Neg5? (17.Nc5!?–/+) 17...Ba1 (17...h6 18.Nh3 g5 19.Bb2–+) 18.Ra1 Qe7 (better 18...Kg8!? 19.Rd1 Re8 20.Bf1–+) 19.Re1 Qc7 (19...Qd6 20.Ne5 Kg8 21.Bf3–/+) 20.Qc2 (20.Rd1 Nf6–/+) 20...h6 21.Bb2 (21.Ne5 hg5 (21...Qe5 22.Bb2 Qg7 23.Bg7 Kg7 24.Bf3 hg5 25.Bd5+–) 22.Ng6 Kg8 23.Nf8 Qf7–/+ (23...Kf8 24.Bh5 Nf6 25.Qc5 Kg8 26.Re7+–)) 21...Kg8 22.Nh3 Qf7 (22...Qd6!?–+) 23.Ne5–/+ Qh7 (23...Qe6 24.Bf3 Re8 25.Re2=) 24.Nc6 (24.Bf3!? Re8 25.Qb3=) 24...Nc6–/+ 25.Qc6 Bb7 26.Qe6 Qf7 27.Qe5 Threatening mate... how? 27...Nf6 (27...Kh7 28.a3–/+) 28.Nf4 Rae8 29.Qd4 (29.Qd6 Kh7–/+) 29...Re4 (29...g5 30.Nd3–+) 30.Qd6 (better 30.Qd2–/+) 30...Rf4?? (better 30...Qd7 31.Qd7 Nd7–+) 31.Qf4+= Qa2? (better 31...Kh7+=) 32.Bf6+– Rf6 33.Qh6?? (better 33.Qb8 Kg7 34.Qb7 Qf7 35.Qf3+–) 33...Re6= 34.Rd1 The mate threat is Rd8 34...Qe2 (worse 34...Re2 35.Qg6 Kf8 36.Rd8 Ke7 37.Qd6 Kf7 38.Rf8 Kg7 39.Qf6 Kh7 40.Rh8) 35.Rd8 Kf7?? (better 35...Re8 36.Qg6 Kf8 37.Qf6 Kg8 38.Qg6 Kf8 39.Qf6 Kg8 40.Qg6=) 36.Qf8 1–0. aravind555 (1815) – malondra (1915), lichess.org, 2020.

4.Nf3 Nc6 5.b5 Ne5 6.Nc3 d6 7.Nd5 Be6 (7...Bg4 8.Be5 fe5 9.Bc4=) 8.d4 Nf3 9.Qf3 Qd7 10.a4 c6 11.Nc3 (11.Ne3 f5+–) 11...Nh6 12.Bd3 0–0 13.0–0 Bg4 14.Qe3 cb5 (14...f5 15.Bc4 e6 16.f3+=) 15.ab5+– Be6 (15...f5!?+–) 16.d5 Bf7 17.Ra7 Ra7 18.Qa7 e6 (18...f5 19.Re1+–) 19.Bc4 (19.de6 Be6 20.Ne2 Bf7+–) 19...ed5 (19...f5 20.Qa2 e5 21.Re1+–) 20.Bd5 (20.Nd5!? Ng4+–) 20...Bd5+– 21.Nd5 Qb5 22.Ba3 (22.Rb1 Qe2 23.Qb7 Ng4+–) 22...Rd8 23.Rd1 (23.Bc1 Nf7+=) 23...Qa6 (23...f5 24.Qe3 Qc4 25.Ne7 Kf7 26.ef5 gf5+–) 24.Qa6 ba6 25.Nc7 (25.Ne7 Kf7 26.Nc6 Rd7+–) 25...Kh8 (25...Nf7!?+=) 26.Rd6 (worse 26.Bd6 Nf7 27.Na6 Rd6 28.Rd6 Nd6–/+; 26.Na6?! Ra8 27.Rd6 Bf8 28.Rf6 Ba3=) 26...Rd6 27.Bd6 f5 (27...a5 28.c4 Nf7 29.c5+–) 28.c4 (better 28.Na6!? Nf7 29.Bb8+–) 28...fe4+– 29.c5 Bd4 (29...Nf5 30.Ne8 e3 A) 31.Ng7?? e2 (31...Kg7?! 32.Be5 Kf7 33.fe3=) 32.g3 e1Q (32...Kg7?! 33.Be5 Kf7 34.Bc3=+) 33.Kg2 Qe4 34.Kf1 Qd3 35.Kg2 Kg7–+; B) 31.fe3 Ne3 32.c6+– (32.Ng7?! Kg7 33.c6 Nd5+=)) 30.Na6 (30.Ne6 Bc3+–) 30...Nf5 Black prepares e3 31.c6?? (better 31.g4 e3 32.Kf1 (32.gf5?? e2 33.Kg2 e1Q–+) 32...Nd6 33.cd6 ef2 34.d7+–) 31...Nd6–+ 32.c7 (32.Nc7 Kg8–+) 32...Nc8 (32...Kg7 33.Kf1–+) 33.Kf1 e3 (better 33...Kg7!? 34.Ke2–+) 34.fe3 Be3 35.Ke2 Bb6 (35...Bg1 36.h3–+) 36.Kd3? (36.Kf3 Nd6 37.Kf4 Bd4–+) 36...Kg7 (better 36...Nd6!?–+) 37.Kc4 Bc7 (better 37...Kf6 38.Kd5 Bg1–/+) 38.Nc7= Ne7 39.Ne6 Kf6 40.Nd4 Nf5 41.Nf5 (better 41.Nc2=) 41...Ke5?? (better 41...Kf5 42.Kd3 Kf4=+) 42.Ng7 Kf6 (42...Kf6 43.Ne8 Ke5+–). AhmedSultanov – pili007, lichess.org, 2019.

4.Nf3 d6 5.Bc4 e6 6.0–0 c6 7.Re1 Bd7 8.d4 Qb6 9.a3 Na6 10.d5 Nh6 11.de6 Bc8 12.Qd6 Qc7 13.Qc7 Nc7 14.Nd4 c5 15.Nb5 Nb5 16.Bb5 Ke7 17.Bc4 Be6 18.Be6 Ke6 19.Nd2 Rhd8 20.Nc4 cb4 21.ab4 b6 22.Rad1 Rd1 23.Rd1 Kf7 24.Rd7 Kg8 25.f4 Nf7 26.g4 h6 27.Nd6 Nd6 28.Rd6 Rc8 29.Bf6 Bf6 30.Rf6 Rc2 31.Rg6 Kf7 32.f5 Rc1 33.Kg2 Rc2 34.Kg3 Rc3 35.Kf4 Rc4 36.Rh6 Rb4 37.Rh7 Kf6 38.g5 1–0. TriAngel – JJMcKay, ICC 1999.

4.Nf3 e6 5.d4 Ne7 6.Nbd2 d5 7.Be2 b6 8.0–0 0–0 9.Re1 Bb7 10.Bd3 Nd7 11.c4 de4 12.Be4 c6 13.Bc2 Kf7 (13...Bc8!?+–) 14.Qe2+– e5 15.de5 fe5 (15...Ne5 16.Rad1 Kg8 17.Ne5 (17.Be5?! fe5 18.Ne5 Qc7+–) 17...fe5 18.Be5+–) 16.Ng5 (16.Be5?! Ne5 17.Ne5 Kg8+–; 16.Ne5?! Ne5 17.Be5 Be5 18.Qe5 Qd2 19.Qe7 Kg8+–) 16...Kg8 17.Ne6 Qc8 (17...Qb8 18.Nf8 Qf8 19.Rad1+–) 18.Ng7 Kg7 19.Be5 Kg8 20.Bd6 Nf5 21.Bf8 Qf8 22.Nf3 c5 23.Qe6 Kh8 (23...Qf7 24.Qf7 Kf7 25.Ng5 Kf6 26.Nh7 Kf7 27.Ng5 Kf6 28.Bf5 Kf5 29.Nf7+–) 24.Qd7 Bf3 25.Bf5 Bg2 (25...Qf5 26.Qf5 gf5 27.gf3 cb4+–) 26.Re7 gf5 27.Rh7 Kg8 28.Rh5 Qg7 29.Qe6 Kf8 30.Rf5 Qf6 31.Rf6 Kg7 32.Qf7 Kh8 33.Rh6 1–0. aperturaf (1800) – vaingrecsky (2175), net–chess.com, 2016.

4.Nf3 e6 5.e5 f5 (5...a5!?=) 6.d4 c6 (6...d6 7.Bc4+=) 7.a4 Nh6 8.Bc4 0–0 9.0–0 d5 10.ed6 Qd6 11.Ba3 Qd8 (11...Nd7 12.b5 c5 13.c3+–) 12.Re1 Re8 13.Nbd2 (13.c3 Nf7+–) 13...b5 (better 13...Bd4!? 14.Nd4 Qd4+=) 14.ab5+– cb5 (14...Bd4!? 15.Nd4 Qd4 16.bc6 Nc6+–) 15.Bb5 Nd7 16.Bc4 (16.Bc6 Rb8 17.b5 Nf7+–) 16...Nb6 17.c3 Ng4 (17...Nc4 18.Nc4 Qc7 19.Nce5+–) 18.Bb3 Qc7 19.h3 Nf6 20.c4 Bb7 21.Bb2 Rad8 (21...Bf3 22.Qf3 (22.gf3?! Qf4+=) 22...Rac8 23.c5+–) 22.Rb1 (22.Ra7!? Nc8 23.Ra2 Ne4+–) 22...Qf4 (22...Bf3 23.Nf3 (23.gf3?! Nh5=) 23...Ne4 24.Qe2+–) 23.Re2 (23.Qe2!? a6+–) 23...Ne4 24.Qe1 Nd2 25.Nd2 (25.Rd2?! Bf3 26.gf3 Qg5 27.Kf1 Qh4=; 25.Qd2?! Qd2 26.Nd2 Bd4+–) 25...Qg5? (25...Bd4 A) 26.Re6 Qf2 27.Qf2 Bf2 28.Kf2 Re6–/+ (28...Rd2 29.Ke1 Re6 30.Kd2 Bg2 31.c5+–); B) 26.Bd4 Qd4 27.Re6+–) 26.f3 (better 26.d5 Bc8 27.Nf3+–) 26...Bf3?? (better 26...Qf4+–) 27.Nf3+– Qf4 (27...Qe7 28.d5! Bb2 29.Rbb2+–) 28.Re6 Re6 29.Qe6 Kh8 30.c5 Nc8 (30...Nd7 31.Ra1 Nf6 32.Ne5+–) 31.c6 (31.Ne5 Be5 32.de5 h5 33.Qf6 Kh7 34.Qd8 Qe3 35.Kh1 Qb3 36.Qc7 Kh6 37.Bc1 g5 38.Rb3 Kg6 39.Qc8 f4 40.Qg8 Kf5 41.Qf7 Ke4 42.Qg6 Ke5 43.Bb2 Kd5 44.Qd6 Ke4 45.Qe6) 31...Rf8 (31...Nd6 32.c7 Re8 33.Qe8 Ne8 34.c8Q Qe3 35.Kh1 Qb3 36.Qe8 Qg8 37.Re1+–) 32.Ne5 h6 (32...Be5 33.Qe5 Qe5 34.de5 Kg7+–) 33.Ng6 (33.Ng6 Kh7 34.Nf8 Bf8 35.Qg8) 1–0. aravind555 – Albinovic, lichess.org, 2018.

4.Nf3 g5 5.Ng5! fg5?? (5...Nh6 6.Qh5 Kf8+–) 6.Bg7 (6...g4 7.Nc3+–) 1–0. Wall,Bill – Guest130, Internet, 2003.

4.Nf3 Nh6 5.Bc4 e6 6.0–0 0–0 7.d4 Nc6 8.b5 Ne7 9.Nbd2 d5 10.ed5 (10.Bd3 Nf7+–) 10...ed5 11.Bb3 Kh8 12.c4 dc4 13.Nc4 (13.Bc4 Re8+=) 13...c6 (13...a6 14.a4+=) 14.bc6+– Nc6 (14...bc6 15.Re1 Re8 16.Ba3+–) 15.Rb1 (15.Ba3 Re8 16.Nd6 Bf8 17.Ne8 Ba3+–) 15...Bg4 16.Ncd2 (16.Ne3 Bh5+=) 16...Bf3 (16...Re8 17.h3 Bf5 18.Rc1=) 17.Nf3+– f5 (better 17...Qd6!?+–) 18.d5+– Bb2 (18...Na5 19.Bg7 Kg7 20.Nd4+–) 19.Rb2 (better 19.dc6 Bf6 20.Qd8 Rfd8 21.cb7+–) 19...a5?? (better 19...Na5+–) 20.dc6 (20.Qc1 a4 21.dc6 bc6 22.Ba4 Ra4 23.Qh6 Re8+–) 20...Qd1 21.Rd1 bc6 22.Rc2 Rac8 (22...a4 23.Be6+–) 23.g3 (23.Ne5 c5+–) 23...Ng4 24.h3 Nf6 25.Rd6 c5 26.Ne5 (26.Ra6 Ne4+–) 26...Ne4 27.Kg2 (better 27.Rd7 Ng5 28.h4+–) 27...Nd6–+ 28.Nc4 (better 28.Nd7 Rfd8 29.Nc5–+) 28...Nc4 29.Rc4 Rfd8 30.Kf3 (30.Ra4 Rd2–+) 30...Rd3 31.Ke2 Rd4 32.Rd4 cd4 33.Kd3 Rc1 (better 33...Rd8!? 34.Bc4–+) 34.Kd4 Rh1 35.h4 h6 36.Bd5 Rf1 37.Ke3 Ra1 38.f3 (38.h5 gh5 39.Kf4 Rd1–+) 38...Kg7 39.g4 Kf6 40.gf5 (40.Kf4 g5 41.hg5 hg5 42.Kg3 Ke5–+) 40...gf5 41.h5 Rh1 42.f4 Rh5 43.Bf3 (43.Bg2–+) 43...Rh3 44.Ke2 (44.Kf2 h5 45.Bd5 h4–+) 44...h5 (better 44...Rh2!? 45.Kd3 Ra2 46.Bc6–+) 45.Bd5 h4 46.Bf3 (46.Kf2 Rh2 47.Kg1 Rd2–+) 46...Rh2 47.Ke3 0–1. aravind555 – determinanta, lichess.org, 2018.

4.Nf3 Nh6 5.e5 Nf7 6.ef6 Bf6 7.Bf6 ef6 8.Bc4 0–0 9.Nc3 d5 (9...Re8 10.Kf1=+) 10.Bd5+= c6 (10...Re8 11.Kf1+=) 11.Bb3 (11.Bf7 Rf7 12.0–0 Bg4+–) 11...Re8+= 12.Ne2 Kg7 (12...Bg4 13.Nfg1+=) 13.0–0 Bg4 (better 13...Qe7 14.Re1 Qb4+=) 14.Nc3 (14.Nfd4 Be2 15.Ne2 Ng5+–) 14...Nd7 (better 14...Ne5=+) 15.Bf7+– Kf7 16.h3 (16.Ng5 fg5 17.Qg4 Ne5+–) 16...Bf3 17.Qf3 Ne5 18.Qf4 Kg7 19.Ne4 Rf8 (19...f5!? 20.Nc5 b6+–) 20.Nc5+– Qe7 21.Qc4?? (better 21.d4 b6 22.Na6+– (22.de5?! fe5 23.Qe3 bc5+–)) 21…Nc4–+ (21...Nc4 22.Rfe1 Qd6 23.Ne6 Kf7 24.Nf8 Kf8–+) 0–1. aravind555 – creeatig (1650), lichess.org, 2018.

4.f4 d5 5.Nc3 e6 6.Nf3=.

4.f4 d6 5.d4 (5.Nf3 e6+=) 5...Nc6 (5...f5 6.e5=) 6.b5 Na5 (6...Nb8 7.Nf3+=) 7.Bc3+/– b6 8.Qd2 (8.Nf3 a6+/–) 8...Bb7 9.Bd3 Nh6 (9...a6 10.ba6 Ba6 11.Ba6 Ra6 12.Qd3+/–) 10.h3 (10.Nf3 d5 11.Qe2 Qd6+/–) 10...Qd7 (10...0–0 11.Nf3+=) 11.Ba5 ba5 12.Qa5 (better is 12.Nf3+=) 12...f5–/+ 13.Nd2 (13.Ne2 fe4 14.Bc4 Nf5–/+) 13...Bd4 (13...fe4!? 14.Bf1–+) 14.c3 (14.0–0–0 fe4 15.Be4 Be4 16.Ne4 Be3 17.Kb1 Rb8–/+) 14...Bb6 15.Qb4 0–0–0 (15...fe4 16.Be4 d5 17.Bf3–/+) 16.a4 (16.Ngf3 Be3 17.Nf1 Bf4 18.ef5 e5 19.fe6 Qe6 20.Kf2 Rhf8=+) 16...c5 (better is 16...e5!?–/+) 17.bc6= Qc6 18.a5 Bc5 19.Qb5 (better is 19.Qb3=) 19...Qb5–+ 20.Bb5 a6 (20...fe4 21.a6 Bd5 22.c4–+) 21.Bc4 d5 22.ed5+= Bd5 23.Ba6 Kb8 24.Nc4 Bc4?? 25.Bc4+– Rd7 26.Ne2 Rhd8 27.a6 Ka7 28.g4 fg4 29.hg4 Ng4= 30.Rh7 Ne3 31.Bb5?? Nc2–+ 32.Kf1 Na1 33.Bd7 Rd7 34.Nd4 Bd4 35.cd4 Ka6 36.d5 Kb6 37.Rg7 Kc5 38.Rg6 Kd5 39.f5 Ke5 40.Re6 Kf5 41.Re1 Nc2 42.Rc1 Ne3 43.Ke2 Ng4 44.Rf1 Kg5 45.Rg1 e5 46.Kf3 Rd3 (47.Ke2 e4–+) 0–1. MasterofDisaster – BadTeenWitch, Live Game Caissa's Web, 2005.

4.f4 d6 5.Nf3 Bg4 6.h3 Bf3 7.Qf3 c6 8.Bc4 Nh6 9.d3 Nf7 10.Nd2 e5 (10...b5 11.Bf7 Kf7 12.a4+/–) 11.Bf7 Kf7 12.fe5 de5 13.Be5 Kg8 (13...Re8 14.Nc4 Kg8 15.Bc3+/–) 14.Bb2 (14.0–0 f5 15.Qf4 Be5 16.Qe5 Nd7+–) 14...Nd7 15.Nc4 Ne5 (15...f5!? 16.Bg7 fe4 17.de4 Kg7 18.Qg3+–) 16.Ne5+– fe5 17.0–0 Qe7 18.a3 Rf8 19.Qe2 Rf1 20.Rf1 Bh6 (20...h6 21.Qf2+–) 21.Qg4 (better is 21.Qf2 Bg7 22.Qa7+–) 21...Kg7?? (21...Be3 22.Kh2 Kg7 23.Qg3+–) 22.Kh2 Rf8 23.Rf8 Kf8 24.Qf3 Ke8+/– 25.g4 Bg7 26.c4 Bh6 27.Kg2 Bf4 28.d4 h6 29.d5 cd5 30.cd5 h5 31.Qf2?? b6? 32.b5 h4 33.Qc2 Qc5 34.Qc5 bc5 35.a4 Kd7 36.Bc3 c4 37.Kf3 Bh2 38.g5 Kd6 39.Bb4 Kc7 40.a5 Bg1 41.Ke2 Bd4 42.Kd2 Ba1?? 43.Kc2 Kd7? 44.Bc3 Bc3 45.Kc3 Kd6 46.Kc4 a6 47.ba6 (47...Kd7 48.a7 Kd6 49.a8Q Ke7 50.Qc6 Kf7 51.Qf6 Kg8 52.d6 Kh7 53.d7 Kg8 54.d8Q Kh7 55.Qfe7) 1–0. coloplayah (1950) – miodrag (1890), net–chess.com, 2005.

4.f4 e6 5.Nf3 Ne7 6.Nc3 (6.Be2 0–0+=) 6...d6 (6...0–0 7.Bd3=) 7.d4 (7.Be2 f5 8.e5 0–0=) 7...b6 (7...0–0 8.Be2=) 8.Bc4 (8.Bb5 c6 9.Bd3 f5+=) 8...Bd7 (8...d5!? 9.Bd3 0–0+=) 9.0–0 c6 (9...f5 10.ef5 Nf5 11.Re1+/–) 10.Qe2 (10.d5 cd5 11.ed5 e5+/–) 10...b5 (10...d5 11.Bd3+=) 11.Bb3+/– a5 12.a3 (12.ba5 Qa5 13.Nd1 d5+/–) 12...0–0 (12...d5 13.f5 gf5 14.ed5 cd5 15.Nb5+=) 13.f5 gf5 14.ef5 Qc8 (better is 14...Nf5!? 15.Be6 Kh8+/–) 15.fe6+– Be8 16.Nh4 (16.Ne4 Qc7+–) 16...Kh8 (16...f5 17.Qe3+–) 17.Nf5 Qc7 18.Ng7 Kg7 19.Ne4 d5 20.Nc5 Qd6 21.Nb7 Qc7 22.Na5 Bg6 23.Bc1 Kh8 24.Bh6 Rg8 25.Rf6 Na6 26.Qf2 (26...Qb6 27.Bf4+–) 1–0. Wall,Bill – Azul, Internet, 2005.

4.f4 Nh6 5.Nf3=.

4.Bc4 e6

5.d4 Qe7 6.Bc3 e5 (6...d5 7.Bd3=) 7.d5 (7.de5 fe5 8.Nf3 d6+=) 7...d6= 8.Nf3 Bg4 (8...f5 9.ef5 Bf5 10.0–0=) 9.h3+= Bf3 (9...Bd7+=) 10.gf3 (10.Qf3 Nh6+=) 10...a5 (10...Nd7 11.a4=) 11.ba5+= Na6 (11...f5 12.Nd2+=) 12.Nd2 b6? (better 12...Nc5+=) 13.ab6+– cb6 14.Rb1 (better 14.Qb1 Qc7 15.Qb5 Kf8 16.Rb1+–) 14...Qb7? (better 14...Qc7+–) 15.Bb5+– Ke7 (15...Kf7 16.Bc6 Qc7 17.Ba8 Qc3 18.Rb6+–) 16.Bc6 Qb8 (16...Qc7 17.Ba8 Qc3 18.Rb6+–) 17.Ba8 Qa8 18.Rb6 Kf7 (18...Nh6 19.f4!+–) 19.Rd6 Ne7 20.Qa1 Nc8 (20...Rd8 21.Rd8 Qd8 22.Qb2+–) 21.Rd7 Kf8 (21...Kg8 22.f4! Nc5 23.Rd8 Kf7 24.Rh8 Bh8 25.fe5 fe5 26.0–0+–) 22.Rd8 (better 22.Qb2 Kg8 23.d6 Nc5+–) 22...Kf7 23.Rh8 Bh8 24.Nc4 Bg7 25.Rf1 (25.Qb2 Bf8+–) 25...Bf8 26.Ne5! fe5 27.Be5 Qb7 (27...Nb6 28.Kd1+–) 28.c3 (28.Rg1 Qd7+–) 28...Nb6 (28...Nc5 29.Bd4+–) 29.Bd4 (29.Qb1 Nc5 30.Rg1 Qa6+–) 29...Nc4 30.a4 (30.Rg1 Nc5+–) 30...Ba3?! (30...Nc5 31.Qd1 Nb2+–) 31.Qa2 Qc7 32.Kd1 (32.e5 Qc8+–) 32...h5 (32...Bd6+–) 33.Rg1 Nb8 (33...Bd6 34.e5! Be5 35.d6 Bd6 36.Qb1+–) 34.Re1 (better 34.e5!? Ne5 35.Qa3 Nf3+–) 34...Nd7 35.h4 (better 35.e5 Ke8 36.f4+–) 35...Ndb6 (35...Bd6+–) 36.Bb6 Nb6 37.d6 (better 37.Qa3 Qf4 38.Qc5+–) 37...Ke8 (37...Qc4 38.Qc4 Nc4+–) 38.dc7 Bd6 39.Qe6 Kf8 40.Qd6 Kg8 (40...Kg7 41.Qd4 Kg8 42.Qb6 Kg7 43.c8Q Kh7 44.Qbc7 Kh6 45.Qf8) 41.Qg6 Kf8 42.Qb6 Ke7 (42...Kf7 43.c8Q Kg7 44.Qd7 Kf8 45.Qbd8) 43.c8Q Kf7 44.Qcc7 Ke8 45.Qbb8 1–0. ry2000 – Agesan, lichess.org, 2020.

5.Ne2 Ne7 6.0–0 0–0 7.Nbc3 f5 8.ef5 (8.d3 d5 9.Bb3 a5=) 8...Nf5 9.Ng3 (9.Na4=) 9...Bc3 (better 9...Qh4!? 10.Nf5 Rf5=+) 10.Bc3+= d5 (10...Ng3 11.fg3 Rf1 12.Qf1+–) 11.Bb3 Ng3 12.fg3 Nc6 (12...Rf1 13.Qf1 a5 14.ba5+=) 13.b5+– Rf1 14.Qf1 Ne7? (better 14...d4 15.bc6 dc3 16.cb7 Qd4 17.Kh1 Bb7 18.Be6 Kh8+–) 15.Qf6+– Bd7 (15...Qf8 16.Qh8 Kf7 17.Rf1 Nf5 18.Qh7 Ke8+–) 16.Qg7 1–0. DEFFM – GuestGRDG, freechess.org, 2018.

5.Nf3 d5 6.ed5 ed5 7.Be2 Nh6 8.0–0 0–0 9.b5 b6 10.d3 Bb7 11.Nbd2 a5 12.a4 c5 13.c3 Nd7 14.Re1 Qc7 15.Qb3 Nf7 16.Rac1 Rae8 17.Bf1 Nde5 18.Ba3 Re6 (18...Ng5 19.Be2=) 19.d4= Nf3 20.Nf3 c4 21.Qb1 Rfe8 22.Re6 Re6 23.Re1 Re4 (23...Bc8 24.Be2=) 24.Nd2 (24.Re4!? de4 25.Nd2+/–) 24...Re1= 25.Qe1 Nd6?? (better is 25...Qd7=) 26.Qe6+– Nf7 (26...Kh8 27.Bd6 Qc8+–) 27.Qe8 (27.Qe8 Bf8 28.Qf8) 1–0. Poschmann,Hans – Farin,Friedrich, Wch Seniors, 1998.

5.Nf3 Ne7 6.0–0 0–0 7.b5 a6!?=.

5.Nf3 Ne7 6.0–0 0–0 7.b5 b6? 8.a4 (8.Nc3 a6 9.a4 f5+–) 8...Kh8 (8...d5 9.ed5 ed5 10.Bb3+=) 9.Bb3 (9.Nc3 d5 10.ed5 ed5+–) 9...Bb7 (9...f5 10.Bg7 Kg7 11.d3+–) 10.d3 (10.Nc3 c5 11.d4 f5+–) 10...e5 11.Nc3 d6 12.a5 Nd7 13.a6 Bc8 14.Qe2 (14.d4 ed4 15.Nd4 Nc5+–) 14...Nc5 15.Bc4 Bd7 (15...Be6 16.Nd5+=) 16.Rfd1 c6 (16...Rb8 17.d4 ed4 18.Rd4+–) 17.d4 Ne6 (17...ed4 18.Rd4 f5 19.e5+–) 18.Be6+– Be6 19.bc6 Nc6 20.d5 Bd5?? (better 20...Nd4 21.Nd4 ed4+–) 21.Nd5 (21.Rd5 Nb4 22.Rdd1 Qc8+–) 21...Ne7 (21...Rc8 22.Nc3 Rf7 23.Nb5+–) 22.Nc3 Nc8 23.Nb5 Rf7 24.Rd5 Bf8 (24...Rd7 25.Rad1+–) 25.Rad1 Rd7 26.Qc4 Ne7 (26...Bh6+–) 27.Rd6 Rd6 (27...Qc8 28.Qc8 (28.Rd7 Qc4 29.Ba3 Qc2–/+) 28...Rd6 29.Qf8 Rf8 30.Rd6+–) 28.Nd6 Kg7 29.Ne5! fe5 (29...fe5 30.Be5 Mate attack) 30.Be5 (30.Be5 Kh6 31.Nf7 Kh5 32.Qe2 Kh4 33.Bg3) 1–0. DEFFM – GuestVKBY, freechess.org, 2019.

5.Nf3 Ne7 6.0–0 0–0 7.b5 d5 8.ed5 ed5 9.Bb3 (9.Be2 a6=) 9...a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 c6 13.c4 dc4 14.Bc4 Kh8 15.Nc3 cb5 16.Nb5 Bg4 17.h3 Bf5 18.Re1 Nec6 19.Nfd4 (19.d3 Na6+–) 19...Nd4 (19...Bc8 20.Ne6 Be6 21.Re6+=) 20.Nd4+– Nc6 (20...Bc8!?+–) 21.Nf5+– gf5 22.Be6 Ne7 (22...f4 23.Bf5 h6 24.d4+–) 23.Bc3 Bh6 24.Qb3 Bd2?? (better 24...Qc7+–) 25.Rd1 1–0. GuestFJPK – GuestQNYG, freechess.org, 2019.

5.f4 Nh6 6.Nf3 0–0 7.0–0 d5 8.ed5 ed5 9.Bb3 Be6 (9...c6 10.c4=) 10.Qe2 Bf7 (10...Qd6 11.Nd4 Bf7 12.a3=) 11.Qb5+= b6 12.Nc3 Increases the pressure on d5 12...Qd7? (better is 12...c6!? 13.Qd3 a6+=) 13.Qd7+– Nd7 14.Nd5 c6 (14...c5+–) 15.Ne7 Kh8 16.Nc6 Bb3 (16...Rfc8 17.Nfd4+–) 17.ab3 Rac8 (17...Rfc8 18.Nfd4+–) 18.Nfd4 Nf5 (18...Ra8 19.Ra2+–) 19.Ra7 Nd4 20.Nd4 (20.Bd4?! Rc6 21.Rd7 Rc2 22.Bb6 Rb8+–; 20.Rd7?! Nc6 21.c3 Rfd8 22.Rd8 Rd8=) 20...Nb8 (20...Rf7 21.Rfa1+–) 21.Ne6 Rg8 (21...Rc2 22.Bc3+– (22.Ng7 Rb2 23.Rc1 Na6+–; 22.Rg7?! Rb2 23.Rf3 Rd8+–)) 22.Ng7 (22.Ng7 Rc6 23.Rb7+–) 1–0. Fournier,Frederic (2205) – sabater (2105), Active (5/0), 2002.

4.Nf3 e5

5.Nc3 a6 6.Bc4 b5 7.Bb3 Bb7 8.d4 (8.0–0 Nc6 9.a3 Nge7+–) 8...Nc6 (8...ed4 9.Qd4 Nc6 10.Qc5=) 9.a4 (9.d5 Nb8+–) 9...ed4 (9...Nb4 10.ab5 ab5 11.de5 fe5 12.0–0+=) 10.Nd4 Nb4 (10...Qe7 11.ab5 Nb4 12.0–0+–) 11.ab5+– f5 (11...ab5 12.Ra8 Qa8 13.Ndb5+–) 12.Nf5! gf5?? (better 12...Be5 13.ba6 Ra6 14.Ra6 Na6+–) 13.Qh5+– Ke7 14.Qf7 Kd6 15.Rd1 Kc5 (15...Bd4 16.Rd4 Bd5 17.Rd5 Nd5 18.Qd5 Ke7 19.Ba3 c5 20.bc6 Kf6 21.Qf5 Kg7 22.Bf8 Qf8 23.Qg5) 16.Na4 (16.Na4 Kb5 17.Qc4 Ka5 18.Qc5) 1–0. pcmvr – vitorcosta, net–chess.com, 2018.

5.Nc3 c6 6.d4 ed4 (6...d6 7.de5 fe5 8.Bc4+=) 7.Qd4+– (worse 7.Nd4 Qe7=) 7...Qe7 8.b5 (8.Be2 f5 9.e5 g5+–) 8...f5= 9.e5 Nh6 (9...d5 10.Bd3+=) 10.0–0–0 c5? (better 10...Ng4+=) 11.Qc4+– Ng4? (11...Qd8+–) 12.Nd5 Qd8 13.Qc5 b6 (13...Nc6+–) 14.Nc7 Qc7 15.Qc7 Na6 16.ba6 Nf2 17.Bc4 Nh1 18.Bf7! Kf7 (18...Kf7 19.Rd7 Mate attack) 19.Rd7 Bd7 20.Qd7 Kg8 (20...Kf8 21.Ba3 Kg8 22.Qe6) 21.Qe6 Kf8 22.Ba3 1–0. pcmvr – grahamtrue, net–chess.com, 2017.

5.Nc3 d6 6.Bc4+=.

5.Bc4 Ne7 6.d4 Nec6 (6...ed4 7.Nd4 Nbc6 8.0–0+–) 7.0–0 a6 (7...Nd4 8.Nd4 ed4 9.Qd4+–) 8.de5 (8.d5 Na7+–) 8...fe5 (8...Ne5 9.Ne5 fe5 10.Nc3+–) 9.a4 (better 9.Nc3+–) 9...b6? (9...Nb4 10.Qd2 Qe7 11.a5+–) 10.b5 (10.Na3 Nb4 11.Be5 Be5 12.Ne5 Rf8+–) 10...Ne7? (better 10...ab5 11.ab5 Ra1 12.Ba1 Na5 13.Be5 Be5 14.Ne5 Nc4 15.Nc4 d6+–) 11.Ne5 (better 11.Be5 Be5 12.Ne5 Rf8+–) 11...Be5 (11...Rf8 12.Na3+–) 12.Be5 Rf8 13.Nc3 ab5 (13...d6 14.Bg7 ab5 15.ab5 Ra1 16.Qa1 Rf7+–) 14.Nb5 d6 15.Bd6! cd6 (15...Na6 16.Qd4 Nc6+–) 16.Nd6 Kd7 17.Nf7 (17.Nf7 Kc7 18.Nd8 (18.Qd8?! Rd8 19.Nd8 Kd8+–) 18...Rd8 19.Qf3+–) 1–0. GuestXFHR – GuestFWQS, freechess.org, 2020.

5.d4 Nc6 6.de5 Nb4 7.ef6 Nf6 8.a3 Nc6 9.Bc4 Ne4?? (better 9...Qe7 10.Qe2 Kd8=) 10.Bg7+– Qe7 11.0–0?? (better 11.Qe2 Qg7 12.Qe4 Ne7 13.Ra2+–) 11...Qg7= 12.Nbd2 (12.c3 Kd8=) 12...Nd2 (12...Nc3!? 13.Qe1 Kd8=) 13.Qd2+= Ne7 (13...d6 14.Rae1 Kd8 15.Re3=) 14.Rfe1 (14.Rae1 d6 15.Re2+–) 14...b5?? (14...d6!?+=) 15.Bb3 (15.Re7 Qe7 16.Re1 Rf8 17.Re7 Ke7 18.Qb4 d6 19.Bb5 Bf5+–) 15...c5?? (15...Qf6 16.a4+–) 16.c4 (16.Qd5 Rb8 17.Re7 Ke7 18.Qg5 Kd6 19.Qf4 Kc6 20.Bd5 Kd5 21.Rd1 Kc6 22.Qb8+–) 16...Bb7+– 17.Qe3 (better 17.Ne5 d5 18.cd5+–) 17...0–0–0?? (better 17...bc4 18.Bc4 Rc8+–) 18.Qc5+– (18.Qe7?! Qe7 19.Re7 Bf3 20.gf3 a6+–) 18...Nc6 (18...Kb8 19.Qe7 Qe7 20.Re7 Bf3 21.gf3 bc4 22.Bc4 Kc7+–) 19.cb5 d6 (19...Qf8 20.Qc3 Qd6 21.bc6 dc6 22.Ne5+–) 20.Qc2 Qc7 21.bc6 (better 21.Be6 Kb8 22.Rac1 Rhe8+–) 21...Bc6 (21...Qc6 22.Qd3 Kb8+–) 22.Rac1 Kb7 (22...Rde8 23.Red1 Re7 24.Qd3+–) 23.Bd5! Rc8 (23...Bd5 Exploits the pin 24.Qc7) 24.Bc6 (24.Re7 Bd5 25.Rc7 Rc7 26.Qc7 Ka8 27.Nd4 Rf8 28.Nc6 Bc6 29.Qc6 Kb8 30.Rb1) 24...Qc6 25.Rb1 (better 25.Re7 Kb8 26.Qc6 Rc6 27.Rc6+–) 25...Ka8 26.Qb2 Rb8 (26...Rhe8 27.Re8 Re8 28.Nd4+–) 27.Qf6 (27.Qg7 Qc2 28.Rbc1 Qb2+–) 27...Rb1 (27...Rhe8 28.Rb8 Kb8 29.Re8 Qe8 30.Qd6 Kb7 31.Ne5+–) 28.Qh8 Rb8 29.Qh7 g5 (29...d5 30.Qe7+–) 30.Ng5 d5 31.Nf3 d4 (31...Qd6 32.Qd3+–) 32.Nd4 Qd6 (32...Qb7 33.Qb7 Kb7 34.Rb1 Kc8 35.Rb8 Kb8+–) 33.Qe4 Rb7 34.Rb1 (34.Nc6 Rd7 35.Na5 Kb8 36.Qe8 Rd8 37.Nc6 Kc7 38.Nd8 Qd5 39.Qe7 Kb6 40.Rb1 Ka6 41.Qf6 Ka5 42.Nc6 Qc6 43.Qc6 a6 44.Qc5 Ka4 45.Qb4) 34...Qc7 35.Qe8 (35.Nf5 a6 36.Nd6 Qe7 37.Qf3 Qg7 38.Rb7 Qg2 39.Kg2 a5 40.Qf8) 35...Rb8 36.Rb8 Qb8 37.Qc6 (37.Qb8 Kb8 38.h4 Kc7+–) 37...Qb7 38.Qb7 Kb7 39.h4 (39.h4 Kc7 40.h5+–) 1–0. aravind555 – glenice7777, lichess.org, 2018.

5.d4 d6 6.de5 fe5 7.Be2 Nc6 8.b5 Nce7 9.0–0 Nf6 10.Nbd2 Be6 11.c4 c6 12.a4 a6 13.a5 b6 14.bc6 Nc6 15.ab6 Qb6 16.Ba3 0–0 (better is 16...Nd4+/–) 17.Bd6+– Rfd8 18.c5 Qb7 19.Nc4?? (19.Ng5!? Nd4+–) 19...h6? (19...Ne4 20.Qc2 Nd4 21.Nd4 ed4 22.Na5+–) 20.Nce5 (20.Rb1!? Qa7 21.Nce5 Ne5 22.Ne5 Ne4+–) 20...Ne5 21.Ne5 Ne4 22.Bf3 Be5 23.Be4 Qe4 24.Re1 Qc4?? 25.Re5+– Rd7 26.Qe1 Re8 27.Rb1 Kg7 28.Rb8?? Rb8= 29.Bb8 Re7?? 30.Bd6 Rd7?? 31.Re6 a5 32.Re7 Kf6 33.Rd7 a4 34.h4! a3 35.Re7 Qd4 36.Be5 Kf5 37.Bd4 g5 38.Qe4 1–0. chevin – 4thehellofit, Live Game Caissa's Web, 2004.

3.e4 Bh6

4.Bc4 Nc6 5.a3 b6 (5...e5 6.Nf3+=) 6.Qe2 Nb8 (6...Bb7 7.Nf3+–) 7.d4 Bb7 8.f3 e6 9.d5 c6 (9...ed5 10.ed5 Kf8 11.Nh3+–) 10.de6 d5 (10...Qe7 11.ed7 Nd7 12.Nh3+–) 11.ed5 cd5 12.Bb5 Bc6 (12...Ke7+–) 13.a4 (13.Bd3 Bb7+–) 13...Qe7 (13...Qd6 14.c3+=) 14.Nh3 (14.Bc6!? Nc6 15.b5+–) 14...Qb4= 15.Bc3 Qc5 16.Qd3 (16.Nf2!?+=) 16...a6= 17.Bc6 Nc6 18.Bd2 (18.f4!?=+) 18...Bd2–/+ 19.Nd2?? (better 19.Qd2 Nd4 20.Na3–/+) 19...Nd4 (better 19...Nb4 20.Qb3 Nc2 21.Kd1 Na1–+) 20.Ra2 (better 20.Nb3!? Nb3 21.cb3=) 20...Ne6–/+ 21.Nb3 Qc4 22.Qc4 dc4 23.Nd2 Rc8 24.c3 Ne7 25.0–0 0–0 26.Re1 Kf7 27.Re4 (27.a5 ba5 28.Ra5 Rc6–/+) 27...b5 (27...Rfd8 28.Rb2–/+) 28.ab5 ab5 29.Ra5 (29.Re1 Rfd8–/+) 29...Nc7 (29...Rfd8 30.Nf1 Nd5 31.Rb5–+) 30.Re1 (30.Rh4 Nc6 31.Ra2 h5–+) 30...Nc6 31.Raa1 Rfd8 32.Red1 (32.Ne4 Nd5–+) 32...Rd3 (32...Nd5 33.Ne4–+) 33.Ne4 (33.Nf4 Rd7 (33...Rc3 34.Ne4+–) 34.Ne4 Rcd8 35.Rd7 Rd7–/+) 33...Rcd8–+ 34.Rd3 (34.Re1 b4 35.Ra4 Rd1 (35...bc3 36.Rc4 R8d6 37.Nhf2+–) 36.Rd1 Rd1 37.Kf2 f5 38.Neg5 Ke7–+) 34...cd3 35.Rd1 f5 (35...Ne6!? 36.Rb1–+) 36.Nc5–/+ b4 (36...d2 37.Nb3 Rd3 38.Ng5 Ke7 39.Nh7–+) 37.Ng5? (better 37.cb4 Nb4 38.Nf2=+) 37...Kg8–+ 38.cb4 Nb4 39.Nge6 Ne6 40.Ne6 Rc8 (better 40...Rd6!? 41.Nc5 Rd5–+) 41.Nf4=+ Rd8 (41...Rc3 42.h4–/+) 42.Kf2 (42.Ne6 Rd7 43.Nc5–+) 42...g5 (42...Rd4 43.g3–/+) 43.Ne6=+ Re8 44.Ng5 Re2 45.Kg3? (better 45.Kf1 Rc2 46.Ne6=) 45...d2–+ 46.Nh3 Nd3 47.Nf4 Nf4?? (better 47...Nb2 48.Ne2 Nd1–+) 48.Kf4=+ Rg2 49.Kf5 (49.h4 Kg7 50.Kf5 h6=) 49...Rh2 50.Ke4? (better 50.Kf4=+) 50...h5–+ 51.Kf4 h4 52.Kg4 h3?? (better 52...Kf7–+) 53.f4 Kf7 54.Kg3 Re2 55.Kh3 Kf6 56.Kg3 Kf5 57.Kf3 Rh2 58.Ke3 Rg2 59.Rd2 Rd2 60.Kd2 Kf4 ½–½. lindsey000 – hortog, gameknot.com, 2018.

4.Nf3+= e5 5.Bc4 Ne7 6.0–0 Rf8 (6...d5 7.ed5 Qd6 8.Qe2+–) 7.d4+– ed4 8.Bd4 (8.Nd4 Nbc6 9.b5 Ne5+–) 8...Nec6 9.Nc3 Nb4 (better 9...Nd4!? 10.Nd4 Nc6+=) 10.Bc5+– N4c6 11.Bf8 Kf8? (better 11...Bf8 12.Bg8 Ne7 13.Bh7 Kf7+–) 12.Qd5 Ne7 (12...Kg7 13.Qf7 Kh8+–) 13.Qf7 1–0. DEFFM – GuestWDMW, freechess.org, 2018.

3.e4 Nh6

4.Nc3 e5 5.Nd5 c6 =+.

4.Nc3 Ng4?? 5.Qg4+– d5 (5...e5 6.Nd5+–) 6.Qh4 Qd6 (6...d4 7.Nd5 c6 8.Nf4+–) 7.ed5 (< 7.Nd5 c6 8.Ne3 Qb4+–) 7...Bg7 8.Qc4 f5 (8...Qd7 9.Nf3+–) 9.Nf3 (9.Nb5 Bb2 10.Nd6 ed6+–) 9...a5 (9...Qd8+–) 10.Nb5 Qd7 (10...Bb2 11.Nd6 ed6 12.Rb1+–) 11.Bg7 Rg8 (11...c6 12.dc6 Nc6 13.Bh8+–) 12.Nc7 Kd8 13.Ne6 Ke8 14.Ne5 b5 15.Nc7 Qc7 16.Qc7 Na6 17.Bb5 (17...Bd7 18.Qd7) 1–0. Tiedemann,Joern – Reichelt,Ben, remoteschach.de, 2002.

4.Bc4 Nf7 5.Nf3 +=.

4.Bc4 Bg7 5.Nf3 Nc6 +=.

4.Bc4 Bg7 5.f4 e6 6.Nf3 (6.Nc3 f5 7.Rb1 0–0=) 6...Nf7 (6...d5!? 7.Bd3 Qe7=) 7.0–0+= Nc6 8.b5 Ne7 9.d3 (9.Nc3 d5 10.Bb3 0–0+=) 9...d5 10.Bb3 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qd6 14.Ng5 (14.Nc3!?+=) 14...Qc5= 15.Kh1 Nd6 16.ed5 ed5 17.Qe2 Nb5 (< 17...Qb5 18.Nc3 Qc6 19.Nd5+/–) 18.Re1 c6 (18...d4 19.Ne6 Be6 20.Qe6+= (20.Be6?! Kd8=)) 19.c4 Nc7 20.Bb2 (20.Bd4 Qb4=) 20...b5 (20...fg5? 21.Ba3 (21.Bg7?! Rg8 22.Bd4 Qb4+/–) 21...Qa3 22.Na3+–) 21.Ba3 (21.cd5 cd5 22.Bd4 Qb4=+) 21...b4=+ 22.Bb2 Kf8 (22...Qd6 23.Nd2=) 23.Bd4= Qd6 (23...Qd4 24.Qe7) 24.cd5 (24.Qe3!? Na6 25.c5=) 24...Ncd5=+ (< 24...Ned5 25.Ne4 Qd8 26.Bc5 Kg8 27.Bb4+=; 24...cd5 25.Qe3 Na6 26.Bd5+/–) 25.Ne4 Qf4 26.Bc5 (26.Bd5 Nd5 27.Nd6+/–) 26...Bg4 (26...Bd7 27.Qf2 g5 28.Qd4=) 27.Qa2 (27.Qd2!? Ke8 28.Nf2 Qd2 29.Nd2+=) 27...Qe5 (27...f5 28.Bd5 cd5 29.Qd5 fe4 30.Qd8 Kf7 31.Qe7 Kg8 32.Qe8 Bf8 33.de4 Qf7+/–) 28.Qa8+/– Kf7 29.Qb7 Bc8 (better is 29...Kf8+=) 30.Bd5+– cd5 31.Nd6 Kg8 32.Qb4 (< 32.Qe7 Qe7 33.Re7 Ba6+–) 32...Nc6 33.Qh4 (33.Nc8?! Nb4 34.Re5 fe5 35.Bb4 Kf7 36.Nd6 Ke6=+) 33...g5 (33...Bd7 34.Re5 fe5 35.Nc3+–) 34.Re5 gh4 35.Re8 Bf8 36.Rc8 Ne5 37.d4 Nd3 38.Nc3 (38...Nc5 39.dc5+– (39.Rc5?! Bd6 40.Rc6 Ba3+/–)) 1–0. Ahrens,Wolfgang – Crawford,Gary, compuserve, 1995.

4.Nf3 Nf7 5.Bc4 e6 6.b5 (6.a3 Bg7+=) 6...Bg7 7.0–0 0–0 8.d4 d6 (8...d5 9.Bd3+=) 9.a4 a6 (9...d5 10.Bd3+=) 10.Nc3 ab5 (10...Ng5 11.Ng5 fg5 12.Qd3+=) 11.ab5 Ra1 12.Qa1 c6 13.Qa2 d5 14.Bb3 (worse 14.ed5 ed5 15.Be2 Re8=) 14...Nd7 (14...f5 15.ef5 gf5 16.Qa7+=) 15.Ba3 Re8 16.bc6 bc6 17.ed5 ed5 (17...cd5!? 18.Nd5! g5+– (18...ed5? 19.Bd5 Kh8 20.Bf7+–)) 18.Nd5!+– cd5 19.Bd5 Rf8? (19...Kh8 20.Bf7 Re2+–) 20.Bf8 Qf8 21.Rb1 Bh6 22.Qc4 Kg7 23.Bf7 Qf7 (23...Bf4+–) 24.Qc8 1–0. Anonymous – Anonymous, lichess.org, 2020.

3.Nf3 Nc6

4.b5!? Na5 5.e4 +=.

4.b5+/– Nb4? 5.c4+– d6 (5...a6 6.Qb3 e5 7.a3 ab5 8.cb5+–) 6.a3 (6...d5 7.ab4+–) 1–0. Wall,Bill – Nebsite, Internet, 2003.

4.e4 Nb4= 5.Bc4 d5 6.ed5 Nd5 7.0–0 Bg4 8.h3 Be6 9.d3 g5?? (better is 9...Bf7=) 10.Ng5!+– fg5 Exploits the pin 11.Bh8 c5?? (11...Ngf6+–) 12.Nc3 (better is 12.Bb5 Qd7 13.Qh5 Kd8 14.Bd7+–) 12...Nf4 (12...Nc3 13.Qh5 Kd7 14.Be6 Ke6 15.Bc3 Qd5+–) 13.g3 (better is 13.Be6 Ne6 14.Qh5 Kd7 15.Qh7 Nh6+–) 13...Bh3?? (better is 13...Nh3 14.Kg2 Bc4 15.dc4 Qd1 16.Rad1 g4+/–) 14.gf4 Bf1 (14...g4 15.Bg8 Bf1 16.Qg4 Bd3 17.Bh7 Qd7 18.Bg6 Kd8 19.Qd7 Kd7+–) 15.Qh5 (better is 15.Bb5 Qd7 16.Kf1 0–0–0 17.Bd7 Rd7 18.fg5 e6+–) 15...Kd7 16.Qg4 Kc7 17.Be5 (17.Nb5 Kb6 18.Qe6 Qd6 19.Nd6 Bg7 20.Rb1 Bb2 21.Rb2 Ka5 22.Nb7 Ka4 23.Qa6) 17...Kb6 18.Rb1 Kc6 (18...Ka5 19.Rb5 Ka6 20.Na4 Qd4 21.Qe6 b6 22.Rb6 Ka5 23.Rb5 Ka4 24.Qa6) 19.Qf3 (19.Bb5 Kb6 20.Na4 Ka5 21.Bc3) 19...Kd7 20.Bb5 (20.Rb7 Qc7 21.Rc7 Kd8 22.Qa8) 20...Ke6+– 21.Qg4 Kf7 22.Qh5 Ke6 White now must not overlook the idea Nf6 23.Bc4 Kf5 (23...Kd7 24.Rb7 Qc7 25.Rc7 Kd8 26.Qf7 Bg7 27.Qg8 Bf8 28.Qf8) 24.Qg5# 1–0. guest1168 – guest885, ICC, 1999.

3.Nf3 d5

4.e3 a6 5.c4 e6 (5...dc4 6.Bc4 b5 7.Bb3+=) 6.Be2 (6.cd5 ed5 7.a3 Bd6+=) 6...Bb4= 7.Qa4 Nc6 8.Nd4 Qd6 (8...Nge7 9.cd5 ed5 10.Nc6 Nc6 11.Bb5=+) 9.0–0 (better 9.Nc6 bc6 10.a3+=) 9...Bd7?? (9...Bc5 10.cd5 ed5 11.Rc1 Bd4 12.Bd4=) 10.Nc6?? (better 10.Nb5 Qf8 11.Nc7 Kf7 12.Na8 Qa8 13.cd5 ed5 14.Nc3+–) 10...Bc6=+ 11.Qc2 Ne7 (11...dc4!? 12.Bc4 Nh6=+) 12.Bf6 (12.a3 Ba5 13.c5 Qd7 14.Bf6 0–0=) 12...Rf8 13.Bc3 0–0–0 (13...e5 14.d4 ed4 15.Bd4=) 14.Bb4 Qb4 15.Nc3 1–0. tsodikovich (1780) – paelscrit, gameknot.com, 2016.

4.e3 Qd6 5.b5+= Qb4 (5...e5 6.Ba3 Qd7 7.Bf8 Kf8 8.d4+=) 6.Bc3 (6.Ba3 Qa5+=) 6...Qd6 7.d4 Qb6 8.a4 a6 9.Bd3 (9.a5 Qd6+=) 9...Bg4 (9...ab5 10.ab5 Ra1 11.Ba1+=) 10.h3 Be6 11.Nbd2 Nh6 12.Nb3 White prepares a5 (12.e4 f5 13.a5 Qa7 14.ed5 Bd5+–) 12...Nd7 13.Bb4 c6 (13...Bf5 14.a5 Qe6 15.Rc1+=) 14.a5 Qd8 15.ba6 ba6 16.Nc5 (16.Qe2 Bf5+–) 16...Nc5 17.Bc5 Bg7 (17...Bf5 18.0–0+–) 18.Qe2 0–0 (18...Bc8 19.e4+–) 19.Ba6+– Qb8 (19...Re8 20.0–0+–) 20.0–0 Qc7 21.Bd3 (21.Rfb1!? Bc8 22.Bc8 Rfc8+–) 21...Ra5+– 22.Ra5 Qa5 23.Be7 Re8 24.Bc5 Bf8 25.Bf8 Rf8 26.Rb1 Nf5 27.c4 c5 (better 27...dc4 28.Bc4 Bc4 29.Qc4 Qd5+–) 28.cd5 Bd5 29.dc5 (better 29.e4!? Re8 30.Bc4 cd4+–) 29...Qc5 30.Bf5 gf5 31.Nd4 Be4 32.Qb5 (32.Rb5 Qc1 33.Kh2 Qc7 34.g3 Kh8+–) 32...Qc8 (32...Qe5 33.Rc1+–) 33.Ra1 Rd8 (33...Rf7 34.Rd1 f4 35.ef4+–) 34.Qb6 Kg7?? (34...Rf8+–) 35.Ra6 (35.Ne6 Kg8 36.Nd8 Bg2 37.Kg2 Qc4 38.Qf6 h6 39.Ne6 Qd5 40.Kg1 Qe6 41.Ra8 Qe8 42.Re8 Kh7 43.Rh8) 35...Kg8?? (better 35...Rd4 36.Qf6 Kg8 37.ed4 Qc1 38.Kh2 Qf4 39.Kh1 Qc1 40.Kh2 Qf4 41.Kg1 Qc1 42.Kh2=) 36.Ra7+– (36.Qf6?! Rd4 37.ed4 Qc1 38.Kh2 Qf4 39.Kh1 Qc1 40.Kh2 Qf4 41.Kg1 Qc1 42.Kh2=) 36...Rf8 37.Rc7 Qa8 (37...Qe8 38.f3 Bd5 39.Nf5 Kh8+–) 38.Qe6 Kh8 39.Qe7 Qa1 40.Kh2 f4 (40...Qh1 41.Kh1 Bg2 42.Kh2 Rf7 43.Qf7 Bh3 44.Qh7) 41.Qg7 (41.Qf8) 1–0. yodamo – Granada, ChessWorld.net, 2007. (=1.Nf3 d5 2.b4 g6 3.Bb2 f6)

4.e3 e5 5.a3 e4 (5...a5 6.b5=) 6.Nh4 (6.Nd4 a5 7.b5 Bd6+=) 6...Ne7 (better is 6...Be6!? 7.f4 Bg7=) 7.Bf6+/– Rg8 8.Bb5 c6 9.Ba4 (better is 9.Be2!?+=) 9...Qd6+= 10.Bd4 (10.Be7 Be7 11.g3–/+) 10...b5 11.Bb3 h5?? (better is 11...g5 12.Qh5 Kd8–/+) 12.g3+= Bg4 13.Qc1 Na6 (13...g5 14.Ng2=) 14.Qb2 (14.h3 Be6+=) 14...c5 (better is 14...g5!? 15.h3 Be6=) 15.bc5+/– Nc5 16.Be5 (16.Nc3!? g5 17.Nd5 (worse is 17.Nb5 Qc6 18.h3 Qb5 19.hg4 Nb3 20.Qb3 Qb3 21.cb3 gh4–/+) 17...Nd5 18.Bc5 Qc5 19.Qe5 Kd7 20.Qd5 Qd5 21.Bd5+/–) 16...Qc6 17.Ba2 (17.f4 g5 18.fg5 Rg5+=) 17...g5 18.Ng2 Bf3 19.Rg1 Nd7 20.Bd4 h4 21.Nc3 Nf5?? (21...h3 22.Qb5 Qb5 (worse is 22...hg2 23.Qc6 Nc6 24.Bd5+=) 23.Nb5 Kd8+=) 22.Bd5+– Qd6 (22...Qh6 23.Bg8 hg3 24.hg3 (24.Qb5?! Nd4 25.ed4 gh2+–; 24.fg3 Qh2 25.Ne2 Ng3+–; 24.Nb5?! gh2 25.Rh1 Bg2 26.Nc7 Kd8 27.Ne6 Ke8+–) 24...Nd4 25.ed4 Bg2 26.Qb5+–) 23.Ba8 Nd4 24.Ne4 (better is 24.ed4 Qd4 25.Qb5 hg3 26.hg3 Bc5+–) 24...Be4 (24...Qb8 25.Bd5 Ne2 26.Rf1+–) 25.Be4 (25.Qd4 Ba8 26.Qa7 Bc6=; 25.ed4?! Ba8 26.Ne3 a6+/–) 25...Ne6 26.Qb5 (better is 26.Bh7 Rg7 27.Bf5 h3+–) 26...Nc7 (26...h3+–) 27.Qc4 Nf6 (27...Rg7 28.gh4 gh4 29.h3+–) 28.Bc6 Kd8 29.Rb1 (29.gh4 Qh2 30.Qd4 Nfd5+–) 29...Ke7 (29...h3 30.Qf7 Kc8 31.Bb7 Kd8 32.Bf3+–) 30.Rb7 (30.gh4 gh4 31.h3 Qa3+–) 30...Kd8 (30...h3 31.Be4 Kd8 32.Rb8 Ke7 33.Rc8+–) 31.Ra7 (better is 31.gh4 gh4 32.h3 a5+–) 31...Ke7 (31...h3+–) 32.Ke2 Bg7 (32...hg3 33.hg3 Bg7 34.Qb4 Qb4 35.ab4+–) 33.Rb1 Rd8 (33...Rc8 34.gh4 g4 35.Qb4+–) 34.Rc7! Nd7 (34...Qc7 35.Qb4 Double attack) 35.Qe4 (35.Rbb7 hg3 36.Rd7 Rd7 37.Rd7 Qd7 38.Bd7 Kd7 39.Qf7 Kc6 40.Qg6 Kb5 41.Qg5 Kc6 42.Qg6 Kb5 43.Qg7 gf2 44.Qd7 Kb6 45.Kf2 Kc5 46.d4 Kb6 47.c4 Ka6 48.e4 Kb6 49.a4 Ka6 50.c5 Ka5 51.Qb5#) 35...Be5 36.Rbb7 Ke8 37.d4 black resigned.. . . (37.d4 Kf8 38.Rd7 Rd7 39.Rd7 Qd7 40.Bd7 Kg7 41.Qe5 Kf7 42.Qe8 Kg7 43.Qe7 Kg6 44.Be8 Kh6 45.Qf7 hg3 46.Qg6#) 1–0. acaudron (2225) – sgrant (2045), net–chess.com, 2012.

4.e3 Bg4 5.Be2 (5.Be2 e5 6.a3=). yodamo – iainb, ChessWorld.net, 2007. (=1.Nf3 d5 2.b4 g6 3.Bb2 f6)

3.Nf3 d6

4.e3 Bg7 5.Be2 e5 6.0–0 Bg4 7.c4 Nd7 8.h3 Bf3 9.Bf3 c6 10.Nc3 Ne7 11.Ne4 Qc7 12.d4 f5 13.de5 Be5 14.Nd6 Bd6 15.Bh8 Be5 16.Be5 Ne5 17.Qe2 0–0–0 18.a4 a6 19.Rfd1 Nd7 20.b5 ab5 21.ab5 Kb8 22.Qa2 Nb6 23.Qa7 Kc8 24.Qa8 Na8 25.Ra8 Qb8 26.Rb8 Kb8 27.Rd8 Nc8 28.b6 g5 29.Bh5 h6 30.Bf7 1–0. Bonetti,Shane – edurgomes, ICC, 2002.

4.e4 b6 5.Bc4+– Bb7 (5...e5!?+–) 6.Ng5! d5 (6...fg5 7.Bh8 Pinning (7.Bh8 Deflection)) 7.Ne6+– Qd6 8.Bd5 (8.ed5 Qb4 9.Bb3 Qd6+–) 8...Bd5 9.ed5 Qd5?? (better 9...c6+–) 10.Nc7 Kf7 11.Nd5 e6 12.Nc7 Nc6 13.Na8 Bb4 14.Qf3 Nge7 15.Qf6 Ke8 16.Qh8 Kd7 17.Na3 Bd6 18.Nb5 Nb4 19.Nd6 Nc2 20.Kd1 Na1 21.Be5 Nc6 (21...Ng8 22.Qg8 Kc6 23.Qe8 Kd5 24.Qb5) 22.Qe8 1–0. Janek – wazzabet, internet, 2017.

4.e4 Bg7 5.Bc4 e5 6.h3 (6.0–0 f5 7.Re1 fe4 8.Re4 Nc6=) 6...a6 (6...Nc6 7.a3=) 7.0–0 (7.d4 ed4 8.Qd4 Nc6+=) 7...Ne7 (7...f5 8.d3+=) 8.d4 b5 (8...Nbc6 9.d5 Nb8 10.Nc3+=) 9.Bb3 Bh6 (9...ed4 10.a4 c5 11.ab5+/–) 10.de5 (10.a4 Bb7+/–) 10...fe5 11.Nc3 Bf4 (11...a5 12.Nb5 Ba6 13.a4 ab4 14.Ne5 de5 15.Be5 Bb5 16.Bh8 Qd1 17.Rfd1+– (worse is 17.Rad1 Bf1 18.Kf1 Nd7+=)) 12.Nd5 Nbc6?? (12...Rf8 13.Nf4 Rf4 14.Bc1 Re4 15.Bd5+/–) 13.Nf6 (better is 13.Nf4 Nb4 14.Ng5+–) 13...Kf8+/– 14.Ne1 (14.Nd5 Nd5 15.Bd5+=) 14...Nd4? (better is 14...Nb4 15.Qf3 a5+=) 15.Bd4+– Nc6 (15...ed4 16.Qf3 Kg7 17.Qf4 Rf8 18.Nh5 gh5 19.Qg5 Ng6+–) 16.Be5 (better is 16.Be3!? Qf6 17.Bd5+–) 16...Be5+/– 17.Qd5 Qf6 (17...Be6 18.Nh7 Kg7 19.Qc6 Bb3 20.Nf3 Ba1 21.cb3+=) 18.Qc6 Ra7 19.Rd1 (better is 19.Rb1+=) 19...Qg5?? (19...Bh3 20.gh3 Qf4=) 20.Nf3 (better is 20.f4 Bf4 21.Qc3+–) 20...Qf4 (20...Qe7 21.Ne5 Qe5 22.f4+–) 21.Ne5 Qe5 22.f4 Qe7 (22...Qb2 23.c3 Qe2 24.Rfe1+–) 23.Qc3 Rg8 (23...Qg7 24.e5 c5 25.Rd6+–) 24.Rde1 White prepares the advance e5 (better is 24.Qd4!? Rb7 25.f5 gf5 26.ef5 Qg7 27.Bg8 Kg8+–) 24...Rg7 25.e5 Bf5 26.Qd4 (better is 26.g4 Bd7 27.Re3+–) 26...c6?? (better is 26...c5 27.ed6 cd4 28.de7 Rge7+/–) 27.ed6+– (27.Qd6?! Qd6 28.ed6 h5+–) 27...Qd7 (27...Qd8+–) 28.Qf6 Rf7 (28...Qf7 29.Qd8 Qe8 30.Re8) 29.Qh8 1–0. gtate – bar, net–chess.com, 2001. (=1.Nf3 d6 2.b4 g6 3.Bb2 f6)

3.Nf3 e5=

4.a3 d5 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.Nf3 g6).

4.Bc3 d5 5.e3 Qe7 6.a3 d4 7.Bb2 e4? (better is 7...de3 8.fe3 Be6=) 8.Nd4+/– f5?? (better is 8...Bd7!?+/–) 9.Nc6! Nc6 (9...bc6 10.Bh8 Discovered attack; 9...Nc6 10.Bh8 Discovered attack) 10.Bh8 a5 11.c3 ab4 12.cb4 Nf6 13.Nc3 Ng4 14.Nd5 Qd7 15.Nf6 Nf6 16.Bf6 Qe6 17.Bc3 Qf7 18.Qe2 Bg7 19.a4 Bc3 20.dc3 Qb3 21.Qc4 Qb2? 22.Qg8 Kd7 23.Qd5 Ke8+– 24.Qg8?? Kd7 25.Rd1 Ke7+– 26.Qh7 Ke8 27.Qg6 Ke7 28.Qg5 Ke6 29.Bc4 Ke5 30.Rd5 Ke6 31.Rd2 Ke5 32.Rb2 Be6 33.Qg7 Kd6 34.Rd2 Bd5 35.Rd5 Ke6 36.Ra5 Kd6 37.Ra8 Ne5 38.Qf6 Kd7 39.Qf5 Kd6 40.Qe6# 1–0. nakpim – spidermans2, playok.com, 2012.

4.d3 d5 5.a3 d4 6.Nbd2 Ne7 7.g3 Nd5 8.Bg2 Nc3 9.Qc1 a5 10.Ne4 ab4 11.a4 Bd7 12.Bc3 bc3 13.0–0 Ra4 14.Nh4 f5 15.Nc3 dc3 16.Bb7 Ra1 17.Qa1 Bc5 18.Qc3 Bd6 19.Qc4 c5 20.Bd5 Qf6 21.Nf3 e4 22.Ne1 ed3 23.cd3 Nc6 24.Nf3 Ne5 25.Qa6 Nf3 26.Bf3 Ke7 27.Qc4 Rc8 28.Rc1 Be6 29.Bd5 Bd5 30.Qd5 Qd4 31.Qf3 f4 32.Re1 fg3 33.hg3 Rf8 34.Qe3 Qe3 35.fe3 Bg3 36.Rc1 Bf2 37.Kf1 Be3 38.Kg2 Bc1 0–1. giorgo – damianzgierz, playok.com, 2012.

3.Nf3 Bg7

4.c3 d5 5.d4 Bg4 6.e3 e6 7.Be2 Nc6 8.h3 Bf3 9.Bf3 Nge7 10.g4 (10.e4 f5 11.ed5 ed5+=) 10...Qd7 11.Na3 a6 12.Rb1 0–0 13.0–0 (13.h4 e5=) 13...Rae8 14.Kg2 e5 15.b5 ab5 16.Nb5 f5 17.g5 f4 18.Qb3? (18.e4 ed4 19.Nd4 Ne5=) 18...Na5 (18...fe3 19.fe3 Na5 20.Bg4–+) 19.Qa4 (19.Qb4!? Nc4 20.Bg4–/+) 19...Nc4 20.de5 (20.Bg4 Qc6 21.ef4 Rf4–/+) 20...Nd2 (better 20...Ne5 21.ef4 Nf3 22.Kf3 Qh3 23.Ke2 Qg4 24.Kd2 Rf4–+) 21.Bd5?? (21.ef4 Nf3 22.Kf3 Be5 23.Ke2 Bf4 24.Kd1–+) 21...Qd5–+ 22.Kg1 fe3 23.Nc7 (23.f4 Qd3 24.Qd4 Qb5–+) 23...Qe5 (23...Nf3 24.Kh1 Qe5 25.Qc4 Kh8 26.Qf4 Qf4 27.Ne8 Qh2) 24.Ne8 (24.Kg2 Qc7 25.Rbd1–+) 24...Nf3 25.Kg2 Qh2 0–1. mickeyd – vaingrecsky (2175), net–chess.com, 2016.

4.Nc3 f5 +=.

4.c4 d5 5.d3 (5.cd5!? Qd5 6.d4+=) 5...dc4=+ 6.dc4 Qd1 7.Kd1 Be6 (7...Bg4 8.Nbd2=) 8.e3 (8.Nbd2 Bg4=) 8...Nd7 (8...Bg4 9.Be2=) 9.c5 (9.Ke1 0–0–0=) 9...b6 (9...Bg4 10.Nbd2=) 10.Bd4 (10.c6 Nb8 11.b5 a6+=) 10...0–0–0 (10...Bg4 11.c6 Nf8 12.Bc3=) 11.cb6 (11.Nbd2 Kb8=) 11...Nb6 (11...ab6 12.Nbd2+=) 12.Ba6+= Kb8 13.Ke2 Nd5 (13...Bd7 14.Nc3+=) 14.Nbd2 Nb4?? (better 14...Bg4+=) 15.Bb5 (better 15.Rhb1 Bd5 16.Rb4 Ka8 17.e4+–) 15...a6= (worse 15...Ba2 16.Bc3 Rd5 17.Ba4+–) 16.Rab1 (16.Rhb1 ab5 17.Rb4 Bd7=) 16...ab5=+ 17.Rb4 c6 (better 17...Bd7=) 18.Nb3 (18.a4!? Bd7 19.Bc5=) 18...Bb3 (18...Bc4 19.Rc4 bc4 20.Na5–/+) 19.ab3 e5 20.Bc5 Rd7 (20...Rd5 21.Rc1–/+) 21.Ra1 (better 21.e4=+) 21...Ra7?? (21...Ne7 22.e4=+) 22.Rd1 (better 22.Ba7 Kc8 23.Bc5+–) 22...Rb7 (22...Ra2 23.Rd2 Rd2 24.Nd2–/+) 23.Rd6 (23.e4 Kc8=+) 23...Ne7=+ 24.Nd2 (24.e4!?=+) 24...Nd5–/+ 25.Rb5?? (better 25.Rh4 Kc7 26.Re6–/+) 25...Rb5–+ (25...cb5?! 26.Rd5 Kc7 27.b4–/+) 26.Rc6 (26.b4 Kc7 27.Re6 Rd8–+) 26...Nc3 (better 26...Kb7 27.Rd6 Nc3 28.Kd3 Rc5 29.Rd7 Kc6 30.Rg7 Rd8 31.Kc2 Ne4 32.Nc4 Rd2 33.Kb1 Rf2 34.Rg8–+) 27.Kf3 (27.Kd3 Kb7 28.Rb6 Rb6 29.Bb6 Nd1–+) 27...Rc8 (better 27...Kb7 28.Rd6 Rc5 29.e4–+) 28.Bd6 (28.Rc8 Kc8 29.b4 f5–+) 28...Kb7 29.Ra6 (29.Rc8 Kc8 30.g4 Kd7–+) 29...Rc6 (better 29...Ka6 30.g4 Rd5–+) 30.Nc4 (30.Rc6 Kc6 31.Be5 fe5 32.g4–+) 30...Ra6 (30...e4 31.Kg4 Rg5 32.Kf4 Rg2 33.Na5 Ka6 34.Bf8 Re6 35.Bg7 Nd5) 31.Na5 Kb6 (31...Rba5 32.Be5 Re5 33.b4 Rf5 34.Kg4 Rf2 35.Kg3 Raa2 36.e4 Ne4 37.Kh4 g5 38.Kh3 Rf4 39.g3 g4 40.Kh4 Rh2) 32.Bc5 Kc5 33.Nc4 Ra2 34.Nd6 Kd6 35.g4 Ke7 (35...Rb3 36.Kg3 Ne4 37.Kf3 Rf2 38.Ke4 f5 39.gf5 gf5) 36.g5 fg5 (36...e4 37.Kg3 Rg5 38.Kh4 Rf2 39.Kh3 Rf3 40.Kh4 Rh5 41.Kg4 f5) 37.h4 (37.h3 e4 38.Kg3 Nd1 39.h4 Be5 40.Kg4 Nf2 41.Kg5 Bd6 42.Kh6 Kf7 43.Kh7 Rh5) 37…e4 (37...e4 38.Kg2 Rf5 39.hg5 Rff2 40.Kg3 Be5 41.Kg4 Rh2 42.b4 Rag2) 0–1. Agiant – gvenc, lichess.org, 2019.

4.c4 e6 5.e4 e5 (5...d5 6.Bd3+=) 6.Qb3 (6.Be2 d6+=) 6...d6 7.c5 Qe7 (7...dc5 8.Bc4 Nh6 9.bc5+=) 8.Bc4 (8.Bb5 Nc6+=) 8...Nh6 9.cd6 cd6 (9...Qd6 10.b5+=) 10.Nc3+– Nc6 (10...f5 11.Rc1 Nc6 12.d3+–) 11.0–0 a6 (11...f5 12.Rac1+–) 12.b5 (12.d4 b5 13.Bd5 Bd7+–) 12...Na5+= 13.Qb4 (13.Qa4 Nc4 14.ba6 Qd7 15.Qc4 Ra6+=) 13...Nc4 14.Qc4 Be6 (14...Qe6 15.Nd5 0–0 16.Qb4+–) 15.Nd5 Bd5 (15...f5 A) worse 16.Ne7 Bc4 17.Rfc1 ab5–/+ (worse 17...Bb5 18.Nd5=+; worse 17...fe4 18.Rc4 ef3 19.Rc7=+); B) 16.Nc7 Kd7 17.Ne6 (17.Qe6?! Qe6 18.Ne6 Ke6=) 17...Qe6 18.Qa4+=) 16.Qd5 (16.ed5?! ab5 17.Qb5 Qd7=) 16...a5 (16...f5 17.Rfe1 Ng4 18.Ba3+=) 17.Ba3 (17.Rfc1 Bf8+–) 17...Nf7 18.Rac1 (18.d4 Rc8+–) 18...0–0 19.Bd6?? (better 19.d4+–) 19...Qd8?? (better 19...Qd6 20.Qb7 Rab8–+) 20.Bf8+– Qd5 21.ed5 Bf8 22.a4 (22.d4 e4 23.Nd2 Bh6+–) 22...Bb4 (22...Rd8 23.d4 Rd5 24.de5 fe5 25.Rfd1 Rd1 26.Rd1+–) 23.Rc7 b6 (23...Rb8 24.Rfc1+–) 24.Rfc1 Nd6 (24...Kg7 25.R1c6 Bc5 26.d3+–) 25.d3 (25.Rd7 Ne8+–) 25...Bc5 (25...Rd8 26.R1c6+–) 26.Nd2 Rc8 (26...Rd8 27.Ne4 Ne8 28.Rb7+–) 27.Rc8 Nc8 28.Ne4 Nd6 (28...Kf7 29.Nc5 bc5 30.Rc5+–) 29.Nf6 (better 29.Rc5 Ne4 30.de4 Kf8+–) 29...Kg7 (29...Kf7 30.Nd7 Bd4 31.Rc7+–) 30.Nd7 (better 30.Ne4 Nb7+–) 30...Kf7 (30...Nb7+–) 31.Nc5 bc5 32.Rc5 e4 (32...Ke8 33.b6 Kd7 34.Ra5+–) 33.de4 Ne4 34.Rc6 h5 35.b6 Ke7 36.b7 Nd6 (36...g5 37.b8Q Nf6 38.Qe5 Kd8 39.Qf6 Kd7 40.Qe6 Kd8 41.Rc8) 37.b8Q Nf7 (37...Kf6 38.Qd6 Kg7 39.Qg6 Kf8 40.Rc8 Ke7 41.Qe6) 38.Qg8 (38.Qg8 Nd6 39.Qg7 Kd8 40.Qc7 Ke8 41.Rd6 g5 42.Rd8; 38.Re6 Kd7 39.Qe8 Kc7 40.Qf7 Kd8 41.Re8) 1–0. princeflash – grahamtrue, net–chess.com, 2017.

4.d3 Nc6 5.a3 (5.b5 Ne5+=) 5...e6 6.e4 f5?? (better is 6...d5+=) 7.Be2 (better is 7.Bg7 fe4 8.de4+–) 7...Bb2–+ 8.Ra2 Qf6 (8...Bg7 9.ef5 gf5 10.d4–+) 9.Nbd2 (9.Qd2 Be5–+) 9...Bc3 (9...Nge7 10.c4–+) 10.0–0 Bd2 (10...Nge7 11.Nb1–+) 11.Qd2 Nd4 (11...Nge7 12.b5 Ne5 13.d4 Nf3 14.Bf3 fe4 15.Be4–+) 12.c3 (12.Nd4 Qd4 13.c3 Qf6–+) 12...Nf3 13.Bf3 b6?? (better is 13...fe4 14.Be4 Ne7–+) 14.e5!+– Qe5 Decoy to e5 15.Ba8 Ba6 (15...c6 16.c4 Nf6 17.Qb2 Qb2 18.Rb2=) 16.Bf3 (16.Re1 Qd6 17.b5 Bc8+–) 16...c5 (16...Nf6 17.c4+–) 17.d4 (17.a4 Qc7+–) 17...cd4 18.cd4 Qf6 (18...Qd6 19.Rb1+–) 19.Rc1 Ne7 20.Be2 (better is 20.a4!?+–) 20...Be2+/– 21.Qe2 Qd4 22.Qa6 (22.Rac2 a5+/–) 22...Qd5 (22...0–0+/–) 23.Qc4 (23.Raa1!? Rf8+–) 23...a5 (23...Qc4 24.Rc4 Kd8 25.Rac2+=) 24.Qc3 (24.Qd5 ed5 25.ba5 ba5 26.Rc5+/–) 24...Qa2? (better is 24...0–0 25.Rd2 Qb5=) 25.Qh8+– Kf7 26.Qh7 Kf6 27.Qh4 g5 (27...Kf7 28.ba5 ba5 29.Qh7 Ke8 30.Qh8 Kf7 31.Qc3+/–) 28.Qh8 (better is 28.Qd4 e5 29.Qb6 Nc6 30.b5+–) 28...Kg6? (better is 28...Kf7 29.ba5 ba5 30.Qh7 Kf6+–) 29.Qe8 (29.Ra1 Qd2 30.Qe8 Kf6 31.Qf8 Kg6 32.Qe7 Qd4+–) 29...Kf6 30.Rd1 (30.Qf8!? Kg6 31.Qe7 Qa3 32.Qe8 Kf6 33.Qf8 Kg6 34.Qg8 Kf6 35.Qh8 Kf7+–) 30...Qa3 (30...ab4 31.Qf8 Kg6 32.Qe7 ba3+–) 31.h3?? (better is 31.Qf8 Kg6 32.Qe7 ab4 33.Qd7+–) 31...Qb4+= 32.Rd7 (better is 32.Qh8 Kf7 33.Rd7+=) 32...a4?? (better is 32...Qe1 33.Kh2 Qe5 34.g3 Qc5+=) 33.Qf8+– Ke5 34.Qh8 (34.Re7?! Qe1 35.Kh2 Qf2 36.Qg7 Kd5 37.Rd7 Ke4+–; 34.Qe7?! Qe7 35.Re7 Kd6+–) 34...Ke4 35.f3 Ke3 36.Qe5 1–0. bambinik – LoZioFoster, gameon.it, 2001.

4.d3 d5 5.d4=.

4.e3 (--> 3.e3 Bg7 4.Nf3).

4.e4 e5 5.Bc4 a6 6.d4 b5 (6...ed4 7.a3+=) 7.Bd5+/– c6 8.Bb3 Ne7 (better is 8...d5!? 9.de5 a5 10.ba5 Qa5 11.Nfd2 Be6+/–) 9.de5+– Rg8?? (better is 9...fe5 10.Ne5 Rf8 11.Nc6 Qb6+–) 10.ef6 d5 (10...Bf6 11.Bf6 d5 12.0–0+–) 11.fg7 Be6 (11...a5 12.a3+–) 12.Ng5 Bf7 (12...Qd6 13.0–0 Kd7 14.Re1+–) 13.Qf3 h6 (13...Nf5 14.Nf7 Qe7 15.Ne5 de4 16.Qc3 Rg7 17.g4+–) 14.Qf7 (14.Nf7 Qd7 15.Nh6 Qe6+–) 14...Kd7 15.ed5 hg5 16.Qe6 Kc7 17.d6! Kb6 (17...Qd6 18.Be5 Pinning (18.Be5 Decoy)) 18.Bd4 (better is 18.de7 Qd7 19.Qg8 Qe7 20.Kd1 c5+–) 18...Kb7 19.Qe7 Nd7 20.Bg8 Qe8 21.Bf7 Qf7 22.Qf7 Rd8 (22...Re8 23.Qe8 a5 24.Qd7 Kb8 25.g8Q#) 23.g8Q Rg8 (23...Kc8 24.Qge8! Re8 25.Qe8 Kb7 26.Qd7 Kb8 27.Qc7 Ka8 28.Qc8#) 24.Qd7 Kb8 25.Qc7 Ka8 26.Qa7# 1–0. ziggyblitz (2325) – samantho (1805), net–chess.com, 2012.

4.e4 e5 5.Bc4 a6 6.Bg8 Rg8= 7.d4 (7.0–0 d5 8.ed5 Qd5=) 7...d6 (7...Qe7 8.a3=) 8.de5 (8.0–0 ed4 9.a3 Bg4=) 8...fe5= 9.c4 Bg4 (9...Nc6 10.b5 Na5 11.Qd5=) 10.Nbd2 (10.Qd5 Rf8 11.Qb7 Nd7+=) 10...Nc6= 11.b5 (11.a3 Rf8=) 11...ab5 (11...Na5 12.h3 Be6 13.Qc2=) 12.cb5 Na5 (12...Nd4 13.Bd4 ed4 14.Qb3=) 13.a4 (13.0–0 Rf8=) 13...b6 (13...Bh6 14.Qc2=) 14.Qc2 (14.0–0 Rf8=) 14...Rf8= 15.h3 Be6 16.0–0 (16.Bc3 Bh6=) 16...Rc8 (16...Rf7 17.Ra3=) 17.h4 (17.Bc3 Nb7+=) 17...Bg4 (17...Bh6 18.Bc3=) 18.Ba3 (18.Bc3 Bf3 19.Nf3 Rf3 20.gf3 Qh4+=) 18...h6 (18...Bh6 19.Bb4=) 19.Rac1 (19.Bb4 Ra8+=) 19...Bf6 20.Nh2 (20.Bb4 Bh4 21.Ba5 ba5 22.Nh4 Qh4=) 20...Bd7 21.Nc4 (21.h5!?=) 21...Nc4–/+ (21...Bh4?! 22.Bd6 cd6 23.Nd6 Ke7 24.Nc8 Qc8 25.Qd2=) 22.Qc4 Bh4 23.g3 (23.Nf3 Qf6–/+) 23...Bg5 (better 23...Bf6–/+) 24.Qd3? (better 24.Rc3–/+) 24...Bc1–+ 25.Rc1 (25.Bc1 g5–+) 25...Qg5 (25...h5 26.Rc3–+) 26.Re1 (26.Rc3 Be6–+) 26...h5 (26...Qf6 27.Re2–+) 27.Re3 h4 28.Kh1 (28.Nf3 Qf6 29.gh4–+) 28...Rf2 29.g4 (29.Kg1 Rf8 30.Qc3–+) 29...Bg4 30.Ng4 Qg4 31.Rg3 (31.Qf1 Rf1 32.Kh2 Rf2 33.Kh1 Qg2) 31...Qg3 (31...hg3 32.Kg1 Qh3 33.Bd6 Qg2) 32.Qg3–+ hg3 (32...hg3 33.Bb4 c6–+) 0–1. mpopp – grahamtrue, net–chess.com, 2017.

4.e4 e6 5.Nc3 (5.Be2 Ne7+=) 5...Ne7 6.b5 (6.Bd3 a6+=) 6...0–0+= 7.Bd3 b6 (7...d5 8.h4+=) 8.0–0 Bb7 9.Qe2 h6 (9...a6 10.a4+/–) 10.e5 f5 (10...a6 11.a4 ab5 12.ab5 Ra1 13.Ra1 Bf3 14.Qf3 (worse is 14.gf3 fe5 15.Ra8 Nf5+=) 14...fe5 15.Qe2+/–) 11.a4 (11.Rfe1 g5 12.h3 a6+=) 11...g5 (11...a6 12.Rfe1+–) 12.h3 (12.Ba3!?+–) 12...Ng6 13.Ba3 (13.g3 h5 14.Ne1 h4=) 13...Rf7 14.Qe3 d6 (14...a5!?+=) 15.ed6+/– cd6 16.a5 (16.Bc4 d5 17.Ba2 e5+=) 16...ba5+= 17.Nd4 (17.Bc4 d5 18.Bb3=) 17...e5?? (better is 17...Be5 18.Ne6 Qc8+=) 18.Nf5+– Nf4 (18...Rf5 19.Bf5 Nf4 20.Ne4 Be4 21.Be4+–) 19.Nd6 Bg2 (19...Nd3 20.Qd3 Rd7+–) 20.Bc4 Bh3 (20...Qc7+–) 21.Nf7 Qf6 22.Nd5 Qg6 23.Ne7 Kh7 24.Ng6 Kg6 25.Qe4 Bf5 26.Qa8 Nd7 27.Ne5 Ne5 28.Qe8 Kh7 29.Bg8 Kh8 30.Bf7 Kh7 31.Qg8 1–0. pierre – fyas, internet, 2010.

4.e4 Nh6 5.Bc4 e6 6.0–0 f5?? 7.Bg7+– Rg8 (7...Nf7 8.e5 Qe7 9.Bh8 Qb4 10.Be6 de6 11.Bf6+–) 8.Bh6 Nc6 (8...Qe7 9.Nc3 Qb4 10.Qe2+–) 9.Bg5 Ne7 10.Nc3 c6 (10...a6 11.Re1 h6 12.Bh6+–) 11.b5 cb5 (11...d5 12.ed5 ed5 13.Re1+–) 12.Nb5 a6 (12...d6 13.Bf4 e5 14.Bg8 Ng8 15.Ne5 de5 16.Be5+–) 13.Nd6 Kf8 14.Bh6 Rg7 15.Ng5 Ng8 (15...Kg8 16.Bg7 Kg7 17.Qf3+–) 16.Nh7 Ke7 17.Bg5 Kd6 18.Bd8 Rh7 19.d4 Nh6 20.e5 (20.Qb1 b5 21.Qb4 Kc6 22.Qc5 Kb7 23.Qc7) 20...Kc6 21.d5 Kc5 22.Rb1 b5 23.de6 (23.c3 Kc4 24.Qd4) 23...de6 24.Qd6 Kc4 25.Rb4 (25.Rfd1 Bb7 26.Qb4) 25...Kc3 26.Qd4 Kc2 27.Rb2 1–0. tsodikovich (1805) – jayknt, gameknot.com, 2017.

4.g3 b6 5.Bg2 Bb7 6.0–0 e5 7.d3 d5 8.c4 dc4 (8...Ne7 9.Qc2+=) 9.Qa4 (9.dc4 Nd7+=) 9...Bc6 (9...Qd7 10.b5 a6 11.Ne5 fe5 12.Bb7=) 10.b5+– Bb7 11.Qc4 Ne7 (11...Bd5 12.Qc2+=) 12.Nc3 (12.Ne5 Bd5 13.Bd5 Qd5+–) 12...Nd7? (better 12...c6+=) 13.Ng5!+– fg5 (13...fg5 14.Bb7 Discovered attack) 14.Bb7 Rb8 15.Bf3 (15.Ne4 Nf5 16.Bc6 Qe7+–) 15...Nf5 16.Bc6 (better 16.Bg2+–) 16...Nd6?? (better 16...Nd4+–) 17.Qe6 Qe7 18.Bd7 Kd8 19.Qe7 Ke7 20.Bc6 Rhf8 (20...Ke6 21.Ne4 g4 22.f4 gf3 23.Ng5 (worse 23.Rf3 h6+–) 23...Ke7 24.Nf3+–) 21.Nd5 Kd8 (21...Ke6 22.Nc7 Ke7 23.Bd5+–) 22.f4 gf4 23.gf4 Nf7 (23...Nc8+–) 24.fe5 Ne5 (24...Kc8 25.Ba3 Ne5 26.Bf8 Nc6 27.Bg7 Nd8+–) 25.Be5 Rf1 (25...Rf5 26.Bg7 Rg5 27.Kh1 Rd5 28.Bd5 Ke7 29.Rac1 c5 30.bc6 Rg8 31.Rf7 Kd8 32.c7 Kc8 33.Be6 Kb7 34.c8Q) 26.Rf1 Be5 (26...Bh6 27.Rf7 Be3 28.Kg2 Bc5 29.Bf6 Kc8 30.Rc7) 27.Rf8 1–0. Janek – wazzabet, internet, 2017.

4.g3 Nh6

5.d3 Nf7

6.Bg2 0–0 7.0–0 A) 7...e5 8.a3 d5 (8...c6 9.c4 d5 10.cd5 cd5 11.Nc3= 0.06/9) 9.c4 c6 10.cd5 cd5 11.Nc3= 0.06; B) 7...a5 8.b5 c6 (8...d6 9.c4 Nd7 10.Qd2 e5 11.Nc3= 0.19; 8...e5 9.c4 d6 10.Nc3 Be6 11.Ne1+= 0.44; 8...d5 9.c4 c6 10.Nc3 d4 11.Na4+= 0.28; 8...e6 9.c4 d5 10.Nc3 dc4 11.dc4+= 0.50; 8...a4 9.c4 d5 10.Nc3 dc4 11.dc4+= 0.41; 8...Qe8 9.Nc3 Qd8 10.e4 a4 11.d4+= 0.38) 9.Na3 d5 10.c4 e5 11.Rc1= 0.13; C) 7...d5 8.c4 c6 (8...dc4 9.dc4 e5 10.Qa4 Qd7 11.Qb3+= 0.28; 8...a5 9.b5 c6 10.Nc3 d4 11.Na4+= 0.28; 8...e6 9.Nbd2 c6 10.Qc2 e5 11.b5= 0.16) 9.Qb3 e5 10.b5 Be6 11.Ba3= 0.09; D) 7...a6 8.c4 Nc6 (8...a5 9.b5 e5 10.Nbd2 a4 11.Rb1+= 0.38; 8...d6 9.a3 e5 10.Nc3 f5 11.Qd2= 0.16; 8...e5 9.Nc3 d6 10.a3 f5 11.Qd2= 0.19; 8...d5 9.Qb3 e6 10.Nbd2 Nc6 11.a4+= 0.44; 8...b6 9.d4 Bb7 10.Qb3 Nc6 11.d5+= 0.38; 8...e6 9.a3 d5 10.Nbd2 Nc6 11.Qc2+= 0.44) 9.a3 e5 10.Nbd2 f5 11.e3= 0.16; E) 7...c6 8.a3 d6 (8...d5 9.c4 e5 10.cd5 cd5 11.Nc3= 0.06; 8...e5 9.c4 d5 10.cd5 cd5 11.Nc3= 0.06) 9.c4 e5 10.Nbd2 Be6 11.Qc2= 0.03.

6.Bg2 a6 7.c4 A) 7...Nc6 8.a3 b6 (8...e5 9.Nc3 d6 10.0–0 0–0 11.d4+= 0.28; 8...d6 9.Nc3 e5 10.0–0 0–0 11.d4+= 0.28; 8...0–0 9.0–0 e5 10.Nc3 f5 11.Qc2+= 0.28; 8...e6 9.0–0 0–0 10.d4 e5 11.Nbd2+= 0.44) 9.0–0 0–0 10.Nd4 Bb7 11.Nc6= 0.19; B) 7...0–0 8.0–0 Nc6 (8...a5 9.b5 d6 10.Nbd2 e5 11.Rb1+= 0.31; 8...d6 9.Nc3 Nc6 10.a3 e5 11.d4+= 0.28; 8...e5 9.a3 c6 10.Qb3 d5 11.cd5= 0.25; 8...b6 9.d4 Bb7 10.Qb3 Nc6 11.d5+= 0.38; 8...e6 9.Nbd2 Nc6 10.Qa4 d6 11.d4+= 0.31) 9.a3 e5 10.Nc3 f5 11.Nd5= 0.25; C) 7...e5 8.0–0 f5 (8...d6 9.Nc3 0–0 10.a3 Be6 11.Nd2+= 0.31; 8...0–0 9.Nc3 d6 10.d4 Be6 11.Qb3+= 0.28; 8...Nc6 9.a3 d6 10.Nc3 0–0 11.d4+= 0.28) 9.Qd2 d6 10.Nc3 0–0 11.e3= 0.19; D) 7...d5 8.0–0 c6 (8...0–0 9.Qb3 c6 10.e4 de4 11.de4+= 0.38; 8...e6 9.Qa4 Nc6 10.a3 0–0 11.Nbd2+= 0.41; 8...dc4 9.dc4 Nc6 10.Qd8 Nfd8 11.a3+= 0.56) 9.e4 0–0 10.cd5 cd5 11.Qb3+= 0.28; E) 7...d6 8.0–0 c6 (8...e5 9.Nc3 0–0 10.d4 Be6 11.Qb3= 0.25; 8...Nc6 9.d4 0–0 10.a3 e5 11.Nbd2+= 0.31; 8...0–0 9.Nc3 Nc6 10.a3 e5 11.d4+= 0.28; 8...e6 9.Nc3 0–0 10.d4 a5 11.b5+= 0.53) 9.a3 e5 10.Re1 0–0 11.Nbd2= 0.13.

6.Bg2 d5 7.0–0 A) 7...c6 8.a3 e5 (8...0–0 9.c4 e5 10.cd5 cd5 11.Nc3= 0.06) 9.c4 0–0 10.cd5 cd5 11.Nc3= 0.06; B) 7...0–0 8.c4 c6 (8...dc4 9.dc4 e5 10.Qa4 Qd7 11.Qb3+= 0.28; 8...e6 9.Nc3 c6 10.e3 Qe7 11.Qb3+= 0.31) 9.Qb3 e5 10.b5 Be6 11.Ba3= 0.09; C) 7...e5 8.c4 c6 9.cd5 cd5 10.a3 0–0 11.Nc3= 0.06; D) 7...Qd6 8.a3 e5 (8...c6 9.c4 e5 10.Nc3 0–0 11.Rc1= 0.19; 8...0–0 9.c4 c6 10.c5 Qc7 11.Nbd2= 0.03) 9.c4 c6 10.Nbd2 0–0 11.cd5= 0.03.

6.Bg2 e5

7.c4 0–0 8.0–0 d6 (8...f5 9.Qd2 d6 10.Nc3 Be6 11.a3+= 0.28; 8...c6 9.Nc3 f5 10.Rc1 d6 11.b5= 0.16; 8...Qe7 9.a3 d6 10.Nc3 c6 11.b5= 0.19; 8...Nc6 9.b5 Ne7 10.a4 d6 11.Nc3= 0.16) 9.Nc3 f5 10.a4 Na6 11.Qb3= 0.13.

7.c4 Na6 A) 8.a3+– 0–0 (8...c6 9.Nbd2 d5 10.cd5 cd5 11.Rc1= 0.16; 8...d6 9.Nbd2 0–0 10.h4 f5 11.Qc2= 0.00; 8...f5 9.h3 0–0 10.Qc2 d6 11.Nbd2= 0.16; 8...d5 9.cd5 Qd5 10.Qc2 c6 11.0–0+= 0.38) 9.h4 d6 10.Bc3 f5 11.Qc2= –0.09; B) 8.b5 Nc5 9.0–0 d6 10.d4 ed4 11.Bd4= 0.22.

7.c4 c6 8.0–0 d6 (8...0–0 9.Qb3 d5 10.b5 Be6 11.Ba3= 0.09; 8...d5 9.cd5 cd5 10.Nc3 Be6 11.Nd2= 0.19; 8...f5 9.Qe1 d5 10.Nbd2 0–0 11.Nb3= 0.03) 9.a4 Be6 10.Na3 0–0 11.b5= 0.00.

7.c4 d6 8.0–0 0–0 (8...f5 9.Nc3 0–0 10.Qd2 Be6 11.Ne5= 0.16; 8...c6 9.Qb3 0–0 10.Nbd2 f5 11.c5= 0.16; 8...Nc6 9.a3 0–0 10.Nc3 f5 11.b5= 0.22; 8...Nd7 9.a3 0–0 10.Nbd2 f5 11.Qc2+= 0.34) 9.Nbd2 f5 10.Rb1 Be6 11.d4= 0.09.

7.c4 Qe7 8.b5 (8.a3 f5 (8...0–0 9.Nc3 c6 10.b5 Qe6 11.h4= 0.25; 8...d6 9.0–0 0–0 10.Qc2 c6 11.Nc3= 0.19; 8...Qe6 9.Nbd2 d6 10.0–0 0–0 11.d4+= 0.34; 8...c6 9.Nc3 0–0 10.Rb1 d6 11.b5= 0.19) 9.Qc2 d6 10.0–0 0–0 11.Nc3= 0.16) 8...c6 (8...d5 9.cd5 Qb4 10.Qd2 Qb5 11.Nc3+= 0.28; 8...0–0 9.Nc3 d6 10.0–0 Be6 11.Nd2= 0.25; 8...d6 9.Nc3 0–0 10.0–0 Be6 11.Nd2= 0.25; 8...Qe6 9.Nc3 c6 10.Qa4 0–0 11.0–0+= 0.38; 8...a6 9.Qa4 d6 10.Nc3 0–0 11.0–0= 0.25) 9.Nc3 0–0 10.h4 (10.0–0 Qe6 11.Ba3+= 0.34) 10...Rd8 (10...d6 11.bc6= 0.13 (11.h5 g5 12.Nd2+–)) 11.Nd2 (11.Qc2+= 0.28) 11...f5 12.h5 g5 13.Qa4 h6 14.Rb1 Qf6 15.Nf1 a5 16.Ne3 Re8 (16...Qe6 17.Qa3+–) 17.g4 Nd6? (17...fg4 18.Ng4 Qf4+–) 18.gf5 Nf5 19.Ne4 Qf7 20.Nf5 Qf5 21.Nd6 Qg4 (21...Qe6 22.Ne8 Qe8+–) 22.Bh3 (worse 22.Ne8 Qg2 23.Kd2 Qg4+–) 22...Qh5 23.Nc8 Rc8 (23...Qg6 24.Nb6 Ra7+–) 24.Be6!! de6 25.Rh5 cb5 (25...Nd7 26.bc6 Rc6 27.Ba3+–) 26.Qb5 Rc6 (26...Nc6 27.f4 gf4 28.Be5 Ne5 29.Re5 Re8+–) 27.Be5 Nd7 28.Qb7 Ne5 29.Qa8 Kh7 30.f4 gf4 31.Rb7 Rd6 (31...Nf3 32.ef3 Rb6 33.Rb6 a4 34.Qe4 Kg8 35.Qe6 Kh7 36.Qf7 Kh8 37.Rhh6 Bh6 38.Rh6) 32.Re5 Kg6 (32...Rb6 33.Rb6 f3 34.Qe4 Kg8 35.Qg6 f2 36.Kf2 Kf8 37.Rbe6 Be5 38.Re8) 33.Qe8 (33.Qg8 Rd7 34.Rd7 f3 35.Qg7) 33...Kf6 (33...Kh7 34.Qf8 Rd7 35.Rd7 f3 36.Rg7) 34.d4 (34.d4 Rd4 35.Qe6) 1–0. Pierre – CyMMr, internet, 2019.

7.c4 f5 8.0–0 0–0 (8...d6 9.Nbd2 0–0 10.Rb1 Be6 11.d4= 0.06; 8...c6 9.Qe1 d5 10.cd5 cd5 11.e3= 0.03; 8...a6 9.a3 0–0 10.Nc3 c6 11.Nd2= 0.25) 9.a3 d6 10.Re1 c6 11.Nc3= 0.00.

3.Nf3 h5

4.a3 e5 +=.

4.Nc3 Nc6 5.a3 (5.b5 Na5+/–) 5...d6 (5...d5 6.e4 d4 7.Nd5+=) 6.e3 Bg4 (6...e5 7.d4+=) 7.h3+/– Bf3 8.Qf3 Qd7 (8...e5 9.Ba6! Qc8 10.0–0+/–) 9.Bb5 (9.b5 Nd8+/–) 9...0–0–0 10.0–0 g5 (10...Bg7 11.Nd5+=) 11.Ne4 (11.Bc6!? Qc6 12.Qc6 bc6 13.f4 gf4 14.ef4+/–) 11...g4+= 12.d4?? (better is 12.Qg3+=) 12...gf3–+ 0–1. ZBicyclist – pieeater, ChessWorld.net, 2010.

4.Nc3 e5 5.d4 Bb4 6.Qd3 +=.

4.d4 Nc6 5.a3 d6 6.e3 Bf5 7.Be2 Qd7 8.0–0 0–0–0 9.c4 g5 10.d5 Ne5 11.Nbd2 g4 12.Ne5 (12.Nd4!?+/–) 12...fe5+= 13.e4 Bg6 14.a4 (14.c5 e6+/–) 14...Nf6 15.c5 dc5 (worse is 15...Be4 16.Ne4 Ne4 17.Qc2+–) 16.bc5 Bg7?? (better is 16...Ne4!? 17.Be5 Qd5 18.Bh8 Nd2+=) 17.Bb5 (17.c6 Qe8 18.Qb3+–) 17...c6+/– 18.dc6 (18.Be5 cb5 19.ab5 Qb5 20.Ra7 Ne4 21.Bg7 Rd5 22.Ra8 Kc7 23.Be5 Kc6 24.Bh8 Nd2 25.Rc8 Kd7–/+) 18...bc6 (better is 18...Qd2!? 19.Qb3 Ne4 20.Qe6 Kb8 21.Be5 Be5 22.Qe5 Nd6 23.c7 Kc7+–) 19.Ba6+– Kb8 20.Be5 Ka8 21.Rb1 e6?? (21...Ne4 22.Bg7 Nc5 23.Bh8 Qd2+–) 22.Qb3 h4 (22...Be4 23.Bb7 Qb7 24.Qb7) 23.Bb7 Qb7 24.Qb7 1–0. retired58 – pieeater, ChessWorld.net, 2011.

4.d4 e6 5.a3 +=.

4.d4 Bh6 5.Qd3 Kf7? (better is 5...f5+/–) 6.Nh4+– f5 7.Qg3 g5 8.Nf5 d6 9.Nh6 Nh6 (9...Rh6 10.Qg5 Nc6 11.d5+–) 10.Qg5 Nd7 (10...Ng4 11.d5 Nf6 12.e4+–) 11.e4 e5 12.Bc4 Ke8 13.Qh5 Kf8 14.de5 (14.Na3!? Qe7+–) 14...Ne5 15.Be5 de5 (15...Bg4 16.Bd6 (16.Bh8?! Bh5 17.Nc3 Qg5+–) 16...Qd6 17.Qd5+–) 16.Qe5 Nf7 (16...Rh7 17.Nd2+–) 17.Bf7 Kf7 18.Nc3 (18.Nd2 Rh7+–) 18...Re8 (18...c6 19.Rd1 Qf6 20.Qf6 Kf6 21.f4+–) 19.Qh5 Kf8 20.Qh8 Ke7 21.Qg7 Ke6 22.Qg6 Ke7 23.Rd1 Bd7 24.Qg7 Ke6 25.Ne2 Rg8 26.Nf4 1–0. guest3672 – MurphysLaw, ICC, 2005.

4.e4 d6 5.h3 Nc6 6.a3 Be6 (6...e5 7.d4+=) 7.Bd3 (7.d4!? Bc8 8.Nh4+/–) 7...Qd7+= 8.c4 (8.Bb5 a6 9.Ba4 b5+=) 8...0–0–0 9.b5 Na5? (9...Ne5 10.Qe2=) 10.Bc3?? (better is 10.Qa4 b6 11.Nd4+–) 10...Nc4= 11.a4 g5 (11...Bg7 12.0–0+=) 12.Nd4 (12.Ng5!? Ne5 A) worse is 13.Ne6 Nd3 (worse is 13...Qe6 14.Bc2+=) 14.Ke2 Qe6 15.Kd3 d5–+; B) 13.Be5 de5 14.Ne6 Qe6 15.Qc2+=) 12...Bg7 13.Ne6 Qe6 14.a5 d5 15.Bc4 dc4 16.Qc2 (16.Qe2!?+=) 16...g4 17.d3? (better is 17.hg4!? hg4 18.Rh8 Bh8 19.Bb2+=) 17...cd3–+ 18.Qa4 Nh6 19.f3 (19.b6 a6–+) 19...Rhg8 (19...Qd6!? 20.Qa2–+) 20.a6 b6 21.Nd2 f5 (21...Qd6 22.0–0–0–+) 22.Bg7 Rg7 23.Rc1 (23.hg4 hg4 24.Qc4 Qd6–+) 23...Qe5 (better is 23...gf3 24.gf3 Qg8–+) 24.Nf1?? (better is 24.Qc4 fe4 25.Qe4 Qe4 26.fe4 gh3 27.gh3–+) 24...Qb2 25.Rc7 (25.Qd1 Qg2 26.Rh2 d2 27.Qd2 Rd2 28.Rg2 Rg2 29.fg4 fg4–+) 25...Kc7 26.Qc4 (26.Qd1 gf3 27.Ne3–+) 26...Kb8 27.Nd2 fe4 (better is 27...Qa1 28.Kf2 g3 29.Ke3 f4 30.Kf4 e5 31.Ke3 Qh1–+) 28.Qc6 (28.Qb3 Qd4 29.hg4 Qe3 30.Kd1 Qe2 31.Kc1–+) 28...Qa1 29.Kf2 (29.Nb1 d2 30.Kf2 Qd4 31.Ke2 d1B 32.Kf1 Qd3 33.Kg1 Qe3 34.Kf1 Be2 35.Ke1 Bb5) 29...e3! 30.Kg3 (30.Ke3 Qd4 Mate attack) 30...gf3 (30...h4 31.Kh4 Nf5 32.Kh5 Rh8 33.Qh6 Rh6) 31.Kf3–+ Rf8 (31...Rf7 32.Kg3 Qe5 33.Kh4 Nf5 34.Kh5 Ng3 35.Kh4 Qf4) 32.Ke3 (32.Ke4 Rf4! 33.Kf4 e5 34.Kf3 Rf7 (34...Qh1?! 35.Qd6 Rc7 36.Qd8 Rc8 37.Qd6 Rc7 38.Qd8 Rc8 39.Qd6 Rc7=) 35.Kg3 Qh1 36.Qe8 Kc7 37.Qe5 Kd8 38.Qd4 Rd7 39.Qh8 Ke7 40.Qh7 Nf7 41.Qe4 Kf8 42.Qe3 h4 43.Kf2 Re7–+) 32...Rg3 (better is 32...Nf5 33.Kf2 Nd6 34.Ke3 Rg3 35.Qf3 Rff3 36.gf3 Qh1 37.Kd4 Qd1 38.Nb3 Nb5 39.Kd5 Qf3 40.Kc4 Qe4 41.Nd4 Qd4 42.Kb3 Rg2 43.h4 Rb2) 33.Ke4 Qa4 (better is 33...Re3! 34.Ke3 Nf5 35.Kf2 Nd6 36.Ke3 Qh1 37.Qd5–+) 34.Nc4 Re3 35.Ke3 Nf5 36.Ke4 Ng3 (better is 36...Nd6 37.Kd3 Rc8 38.Nb6 Qb3 (38...Rc6 39.Na4 Rc4 40.Nc3+/–; worse is 38...ab6 39.Qb6 Ka8 40.Qc6 Rc6 41.bc6–+) 39.Kd4 Qb2 (39...ab6 40.a7 Ka7 41.Ra1 Qa4 42.Ra4 Kb8 43.Ra8) 40.Kd3 Rc6 41.Nd7 Kc7 42.bc6 Kc6–+) 37.Ke5?? (37.Kd5 Rf5 38.Kd4 Qc4 39.Kc4 Rc5 40.Qc5 bc5 41.Rd1+–) 37...Qb5!–/+ 38.Qb5 Rf5 39.Kd4 Rb5 40.Ra1 (40.Rd1 e5! 41.Kd3 Rd5 42.Kc2 Rc5–+) 40...h4 41.Kd3 e5 42.Nd6?? (better is 42.Re1 Rd5 43.Ke3–/+) 42...Rd5 43.Kc4 Rd6 44.Re1 (44.Ra2 Ne4–+) 44...Re6 (better is 44...e4–+) 45.Re4 (45.Kd5 Re7 46.Re5 Re5 47.Ke5–+) 45...Ne4 46.Kd5 0–1. larniletter – pieeater, ChessWorld.net, 2010.

4.e4 d6 5.h3 Nc6 6.Bb5 Be6 7.0–0 Qd7 8.Nc3 0–0–0 9.Nd4! g5? (9...Nd4 10.Bd7 Pinning (10.Bd7 Deflection)) 10.a4 (10.Qe2 Bh3 11.Bc6 Qg4+–) 10...f5 (10...Bf7 11.Qe2 Kb8 12.Bc6+–) 11.Re1 (11.ef5 Bf5 12.Bc6 bc6+–) 11...f4? (11...Bg7 12.Nc6 bc6 13.Bc6 Qc6 14.Nb5+–) 12.Qf3 (better is 12.Bc6!? bc6 13.Ncb5 cb5 14.Ne6 Nf6 15.Nd8 Kd8 16.ab5 Qb5 17.Bf6 ef6+–) 12...Nf6 Black prepares the advance g4 13.d3 (13.Qd3 Kb8 14.Bc6+–) 13...g4+/– 14.Qf4 gh3 15.g3 h4 16.gh4 (16.Bc6 bc6 17.Ne6 Qe6=) 16...Rg8 (16...Bh6 17.Qh2 Bd2–/+) 17.Kh2?? (better is 17.Kh1 Rh8 18.Bc6 bc6 19.Ne6 Qe6 20.e5+=) 17...Rg2 (17...Bh6! 18.Qf3 Rg2 19.Qg2 hg2 20.Bc6 bc6 21.b5 Bf4 22.Kg1–+) 18.Kh1 Ng4 (better is 18...Bh6 19.Qf3 Bg4 20.Bc6 bc6 21.Qg2 hg2 22.Kg1 e5–+) 19.Rg1?? (19.Bc6 bc6 20.Nd1–+) 19...Bh6 20.Qf3 (20.Bc6 bc6 21.Qg4 Bg4 22.Rg2 hg2 23.Kg1–+) 20...Rh2 0–1. gordiemac – pieeater, ChessWorld.net, 2011.

4.e4 d6 5.h3 e5 6.Nc3 +=.

4.e4 e5 5.a3 a5 +=.

4.e4 Bg7 5.Nc3 e5 6.b5 a6 7.a4 a5 8.d4 ed4 9.Qd4 Ne7 10.Bc4 d6 11.0–0 c5 12.Qe3 Bh6 13.Qd3 Nd7 (better is 13...Bf4+–) 14.Qd6 g5? (14...Nb6 15.Qc5 Nc4 16.Qc4 Bg4+–) 15.Qe6 Nf8 (15...Rh7 16.Nd5 g4 17.Bf6 gf3 18.Be7 Re7 19.Qh6 Rf7 20.Qe6 Kf8 21.Qd6 Kg7+–) 16.Qf7 Kd7 17.Rfd1 (17.Rfd1 Kc7 18.b6 Kb6 19.Rd8+–) 1–0. b4_player – jensen, internet, 2013.

3.Nf3 Nh6

4.a3 Nf7 5.e3 Bg7 6.Be2 e6 7.0–0 Nc6 8.d4 b6 (8...d5 9.Nbd2+=) 9.b5 Ne7 10.c4 0–0 11.Nbd2 Bb7 12.e4 c6 13.a4 a6 14.bc6 dc6 15.Qc2 (15.c5 bc5 16.dc5 Qc7+/–) 15...Rc8 (15...c5 16.a5 Nc6 17.Nb3 Na5 18.Na5 (< 18.dc5 Be4 19.Qe4 Nb3–/+) 18...ba5 19.Rfd1+=) 16.Rad1 b5 (16...c5 17.Nb3+=) 17.ab5 (17.Nb3!? Rb8 18.Nc5+/–) 17...cb5+= 18.c5 Nc6 19.Bc3 (19.Qb3 Re8+=) 19...b4 (better is 19...f5=) 20.Qb2?? (better is 20.Bb2+=) 20...a5 (better is 20...Rb8!?–+) 21.Nc4=+ Rb8 (< 21...bc3 22.Qb7 f5 23.e5+=) 22.Bd2 f5 23.e5 h6 (23...a4!?=) 24.Nb6 g5 25.h3?? (better is 25.Bc1=) 25...g4–+ 26.hg4 fg4 27.Nh2 Qd4 28.Qd4 Nd4 29.Bc4 (29.Bg4 Ne5 (29...Be5?! 30.Nd7–/+) 30.Bh6 Ng4 (30...Bh6?! 31.Rd4 Rbe8 32.Re1–/+) 31.Ng4 Ne2 32.Kh2 Bh6 33.Nh6 Kg7–+) 29...Ne5 30.Be3 (30.Bh6 Nc4 (30...Bh6?! 31.Rd4 Nc4 32.Rg4 Bg7 33.Nc4–+) 31.Bg7 Ne2 32.Kh1 Kg7 33.Rd7 Kf6 34.Nc4 Rh8–+) 30...Nc4 31.Bd4 Nb6 32.Bg7 Rf7 (33.Be5 Nd7 34.Rd7 Rd7 35.Bb8 h5=+; better is 32...Kg7 33.cb6 Bd5–+) 0–1. revrevrevrev – Lustochliv, Live Game Caissa's Web, 2004.

4.Nc3 a6+–.

4.c4 c6 5.e4 (5.Nc3 Bg7+–) 5...Qb6 (5...Na6 6.a3+–) 6.a3 Ng4 (6...a5!?+–) 7.c5+– Qc7 8.d4 b5 (8...f5 9.e5+–) 9.Be2 (9.h3 Nh6 10.a4 ba4 11.Qa4 Nf7+–) 9...Bg7 (9...a5 10.ba5 Qa5 11.Nbd2+–) 10.0–0 (better 10.h3 Nh6 11.a4+–) 10...d5? (10...a5 11.h3 Nh6 12.ba5 Qa5 13.Nbd2+–) 11.h3 (11.ed5 cd5 12.h3 Nh6+–) 11...Nh6? (better 11...de4 12.hg4 ef3 13.Bf3 a5+–) 12.ed5 cd5 13.Nc3 Ba6 (13...Qb7 14.Bb5 (14.Nb5?! a6 15.Nc3 0–0+–) 14...Bd7 15.Qe2 Bb5 16.Nb5+– (16.Qb5?! Qb5 17.Nb5 Na6+–)) 14.Nb5 (14.Nd5 Qd7 15.Nc3 Nf5+–) 14...Qc6 (14...Qd7 15.Nc3 0–0 16.b5+–) 15.a4 (15.Nc3 Be2 16.Qe2 Qd7+–) 15...0–0 (15...Qb7 16.Nc3 Qb4 17.Bb5 Kf8 18.Qe2+–) 16.Nc3 Bc8 (16...Bb7 17.Qb3 e6 18.b5+–) 17.Rc1 (17.b5 Qb7+–) 17...Bf5 (17...e6 18.b5 Qc7 19.Qb3+–) 18.Nh4 (18.Nh4 Be6 19.b5+–) 1–0. rcm06 (2105) – akekka, gameknot.com, 2017.

4.c4 Bg7 5.b5+=.

4.e4 e6 5.b5 b6 6.Nc3 Bg7 7.d4 Bb7 8.Bd3 0–0 9.0–0 d5 (9...a6 10.a4+=) 10.a4 de4 11.Be4 Be4 12.Ne4 a6 13.Qd3 Qe7? (better is 13...c6+=) 14.Ba3+– Qd8 15.Bf8 Qf8 16.Nc3 (16.a5 Qc8+–) 16...Qb4? (16...Qd6+–) 17.Qe4 (17.Qe4 Ra7 18.Qe6 Kh8 19.a5 ba5 20.Nd5+–) 1–0. R_REZAEI (1925) – helmisflorin, Tuebingen internet, 2012.

3.g3 Bg7

4.Bg2 c6 5.d3 a6 6.c4 e6 7.a4 (7.Nf3 d5+=) 7...Ne7 (7...d5 8.Nd2=) 8.b5 (8.Nf3!?=) 8...ab5=+ 9.ab5 Ra1 10.Ba1 0–0 11.bc6 Nbc6 12.Nf3 e5 (12...d5 13.cd5 Nd5 14.0–0=) 13.0–0 d5 14.cd5 Nd5 15.Nbd2 (15.Qb3 Na5 16.Qb5 Be6 17.Be5 fe5+=) 15...Bg4 (15...Be6 16.Qb1=) 16.Nc4 (16.Qb3!? Na5 17.Qb5+–) 16...b5= 17.Ne3 (17.Ncd2 Be6=) 17...Ne3=+ 18.fe3 Ne7 (18...Be6 19.Qb1 Qb6 20.Kh1–/+) 19.d4 (19.Qb3!? Qd5 20.Qd5 Nd5 21.Ne5 Ne3 22.Ng4 Ng4 23.Bc6+=) 19...e4=+ 20.Nd2 f5 21.Rf2 (21.h3 Bh5=+) 21...Nd5 (better 21...Bh6 22.Nf1 Qd5–/+) 22.Qc2? (better 22.h3!? Bh6 23.hg4 Be3 24.gf5 Bf2 25.Kf2 e3 26.Kg1 ed2 27.fg6=+) 22...Qa5 (better 22...Qa8 23.Bb2 Qa4 (23...Ne3?! 24.Qb3 Nd5 25.Nf1=+) 24.Qa4 ba4–+) 23.Nb3? (23.Qc1 Qa2 (23...Ne3 24.Nb3 Qb4 25.Qe3+–) 24.Nf1 Ra8–/+) 23...Qa8?? (23...Qe1!? 24.Rf1 Ne3 25.Qc1 Qe2 26.Rf2 Qd1 27.Qd1 Bd1 28.Nc5–+) 24.Bb2? (better 24.h3 Ne3 25.Qc1 Ng2 26.hg4–+) 24...Ne3–+ 25.Qc5 (25.Qd2 Ng2 26.Rg2 Qa4–+) 25...Ng2 (better 25...Qa2 26.Qc3 Nd1–+) 26.Kg2?? (26.Rg2 Qa2 27.Qc3 Qb1 28.Bc1 f4 29.gf4 Be6–+) 26...Qa2 (better 26...e3 27.d5 Bh3 28.Kh3 ef2–+ (28...Bb2?! 29.Rf3=+)) 27.Qc3 (27.Qc2 e3 28.Rf1 Qa8 29.Kg1 Bh3–+) 27...b4! 28.Qc4 (28.Qb4 Qb2 Deflection) 28...Kh8 29.Bc1 Ra8 30.Qb4 (30.h3 Bh5–/+) 30...Be2–+ 31.Nc5?? (31.Qb7 Rf8 32.Be3 Bf3 33.Kh3 Qb1–+) 31...Bf3 (better 31...e3 32.Ne4 ef2 33.Nf2 Qd5 34.Kg1 Bb5–+) 32.Kg1 Qa1 33.Rf1?? (33.Nb3 Qa4 34.Qa4 Ra4 35.Rc2–+) 33...Qd4 (33...Bd4 34.Qd4 Qd4 35.Rf2 Ra2 36.Nd3 ed3 37.Bb2 Rb2 38.Kf1 Qf2) 34.Qd4–+ Bd4 35.Rf2 Bf2 (better 35...Ra2! 36.Nb3 Bf2 37.Kf1 Bg4–+) 36.Kf2 Rc8 (better 36...Ra2 37.Ke3 Rc2 38.Ne4 fe4 39.Bd2–+) 37.Bb2 Kg8 38.Ne6 (38.Bd4–+) 38...Rc2 39.Ke3 Rb2 40.Ng5 (40.Nd4 Bg4 41.h4 Ra2–+) 40...Rh2 (better 40...Rb3 41.Kf4–+) 41.Ne6 (41.Nf3 ef3 42.Kf3 g5–+) 41...Kf7 (better 41...Rg2 42.Nf4 Rg3 43.Kf2–+) 42.Nd8 (42.Ng5 Kf6 43.Nf3 ef3 44.Kf3 g5–+) 42...Kf6 43.Nc6 g5 44.Nd4 h5 45.Nf3 ef3 46.Kf3 g4 47.Kf4 Rf2 (47...Rf2 48.Ke3 Rf3 49.Kd4 h4 50.Kc4 hg3 51.Kc5 g2 52.Kd4 g1Q 53.Kc4 Qb1 54.Kd4 Qc2 55.Kd5 Rd3; 47...h4 48.Ke3 hg3 49.Kd3 g2 50.Kd4 g1Q 51.Kd3 Qc1 52.Kd4 Rc2 53.Kd3 Qd2) 0–1. JUANKARODA (1745) – smidasek (1735), lichess.org, 2020.

4.Bg2 c6 5.d3 a6 6.Nd2 d5 7.c4 e6 8.cd5 ed5 9.Ngf3 Ne7 10.Nd4 0–0 11.0–0 Nf5 12.Nf5 Bf5 13.Nf3 (13.e4 Be6=) 13...Be6 14.Nd4 Bf7 15.Re1 Re8 16.e4 de4 17.Re4 (17.Be4? f5 18.Bc6 bc6 (18...Bd4? 19.Be8 Nc6 20.Bf7 Kf7 21.Rc1+–) 19.Re8 Qe8–+; 17.de4?! Nd7=) 17...Re4 18.Be4?? (18.de4 Nd7=) 18...Nd7?? (better 18...f5 19.Nf5 Bb2 (19...gf5?! 20.Bg7 Kg7 21.Bf5–+) 20.Nh6 Kg7 21.Nf7 Qf6–+) 19.Nb3 Bb3 (19...Qb6 20.a3=+) 20.Qb3= Kh8 21.Qf7 (21.Re1 Qg8 22.Qg8 Rg8=) 21...Qe8 22.Qc4 f5 23.Bg7 Kg7 24.Qd4 Nf6 25.Bg2 Qd7 26.Qe3 (26.Qc3 Re8=) 26...Re8=+ 27.Qd2 Qd4 28.a3?? (better 28.Re1=+) 28...Qa1–+ 29.Bf1 Qa3 (better 29...Re1 30.Kg2 Rf1 31.Qe3–+) 30.d4 (30.Kg2 Nd5–+) 30...Nd5 31.Bg2 (31.b5 ab5 32.Kg2 Qc3–+) 31...Qb4 32.Bd5 (32.Qd3–+) 32...Qd2 33.Bc6 (33.h4 Qe1 34.Kg2 Re2 35.Kh3 Qf2 36.Bc6 Qh2) 33...bc6 (33...Re2 34.h4 Qe1 35.Kg2 Qf2 36.Kh3 Qh2) 34.d5 (34.Kg2 Re2 35.Kh3 Rf2 36.g4 Rh2 37.Kg3 Qf2) 34…Qd5 (34...Qd5 35.h3 Re1 36.Kh2 Qh1) 0–1. JUANKARODA (1750) – smidasek (1730), lichess.org, 2020.

4.Bg2 c6 5.d3 d5 6.Nd2 e5 7.c4 d4 8.a3 Ne7 9.Ngf3 0–0 10.0–0 a5 11.Qc2 ab4 12.ab4 Ra1 13.Ra1 Nd7 14.Ra8 Qc7 15.Qb3 White prepares the advance b5 15...Kh8 16.b5 cb5 17.Qb5 Nc5 (17...Nb6 18.Ra7 Bd7 19.Qb3+=) 18.Ba3+– Na6 19.Ne4 Bd7 20.Qb2?? (better 20.Rf8 Bf8 21.Qb3+–) 20...Ra8–/+ 21.Be7 f5 (21...Bc6 22.Bf6 Be4 23.Bg7 Qg7 24.de4–/+) 22.Neg5 (22.Bd6 Qc8 23.Neg5 e4 24.Nd4 Nc5=) 22...Bc6 (22...Be6 23.Ne6 Qe7 24.Ng7 Qg7–/+) 23.Ba3? (23.Bd6 Qa5 24.Ne5 Qc3=) 23...Bf6?? (23...Qd7 24.Bd6 Re8 25.Qa3–+) 24.Qb3?? (better 24.Bd6! Qa5 25.Be5 Be5 26.Ne5+=) 24...h6 25.Ne6 Qd7 26.Nc5 Nc5 27.Bc5 e4 (27...Ra1 28.Bf1–+) 28.de4 (28.Ne1 Ra1 29.Bb4 Qe8–+) 28...fe4 (28...Ra1 29.Bf1 fe4 30.Qb2 Rf1 31.Kf1 ef3 32.Ke1 fe2 33.Qe2–+) 29.Nd2 (29.Ne1–+) 29...e3! 30.Bc6 (30.fe3 Ra1 Pinning) 30...bc6 (better 30...Qc6 31.fe3 Ra1 32.Nf1 Qc5 33.Qb7 Qc4–+) 31.Nf3? (31.fe3!? de3 32.Nf1 Bg7–+) 31...ef2 (31...Qf5!? 32.Bd6–+) 32.Kf2 Re8 (32...Rd8!? 33.Qd3 Qg4 34.Kg2–+) 33.Qd3–/+ Kg7 (33...Kh7 34.Bd4 Bd4 35.Qd4–/+) 34.Nd4 (34.Bd4 Bd4 35.Qd4 Qd4 36.Nd4 c5–/+) 34...Bd4 (34...Kh7 35.Nf3 Qe6 36.Qe3–/+) 35.Bd4 (35.Qd4 Qd4 36.Bd4 Kf7–/+) 35...Kh7–/+ 36.e3? (36.Be3 Qh3–/+) 36...Qh3 (36...c5 37.h4–+) 37.c5?? (better 37.Kg1–/+) 37...Qh2–+ 38.Kf3 (38.Ke1–+) 38...Rf8 39.Ke4 (39.Bf6 Rf6 40.Ke4–+) 39...Qh1 40.Ke5 Qd5 0–1. JUANKARODA (1815) – ratepm (1770), lichess.org, 2020.

4.Bg2 d6 5.e3 c6 6.Ne2 Qc7 7.d3 b6 (7...a5 8.ba5 Qa5 9.Nd2=) 8.Nd2 Bb7 9.c4 Nd7 10.a4 e5 11.Rc1 Ne7 12.Nb3 (12.0–0!?=) 12...c5+= 13.Bb7 Qb7 14.0–0 Rc8 (better is 14...cb4!? 15.d4 0–0–/+) 15.b5= 0–0 16.Nc3 Kh8 17.a5 Rfd8 18.a6 Qc7 19.Ne4 (19.f4 ef4 20.ef4 d5+=) 19...f5 (19...d5!? 20.cd5 Nd5=) 20.Ng5+/– Kg8? (better is 20...Re8!?+/–) 21.Ne6+– Qb8 22.Nd8 Rd8 23.Nd2 d5 (23...Nf6 24.e4+–) 24.cd5 Nd5 25.Nc4 Re8 26.Qb3 Kh8 27.e4 Nb4 28.ef5 gf5 29.Ne3 Rf8 30.Nd5 Qd6 31.Ne3 Bh6?? The isolani on d3 becomes a target 32.Rcd1 Nf6?? 33.Nf5 Bg5 34.Nd6 1–0. diablo005 – trifid, playok.com, 2012.

4.Bg2 e5 5.d3 Ne7 6.Nd2 0–0 7.Ngf3 d6 8.0–0 Be6 9.c4 c6 10.a3 Nd7 11.Ne4 Nb6 (11...d5 12.Nd6 Qc7 13.c5=) 12.c5 d5 13.Nd6 (13.Nf6 Bf6 14.cb6=) 13...Nd7 (better 13...Qc7!?=) 14.Nb7+– Qc7 15.Na5 (15.Nd6 Nc8 16.Nc8 Rfc8+–) 15...d4 (15...Nc5 16.Nc6 (worse 16.bc5 Qa5 17.d4 Rab8=+) 16...Qc6 17.Rc1+=) 16.Nb3 (16.Qc2 g5+–) 16...f5 (16...Nd5 17.Re1+–) 17.Qc2 (17.Ng5 Bf7+–) 17...Bd5 18.e4 Be6 (18...fe4 19.de4 Bf7 20.Ng5+–) 19.Nbd2 (19.Ng5 Bf7 20.Nf7 Rf7 21.f4 fe4 22.Be4 ef4 23.Rf4 Rf4 24.gf4 Qf4 25.Nd4+–) 19...f4? (better 19...Bf6!?+–) 20.Ng5+– Bf7 21.Nf7 (21.gf4!? ef4 22.Ndf3 Ne5 23.Nd4 Qd7+–) 21...Rf7 22.g4 (22.Nc4 Rf6+–) 22...g5 23.f3 (23.Nf3 Bf6+–) 23...Ng6 24.Nc4 Bf8 25.Qb3 Kh8 (25...Qb7 26.Qa4+–) 26.Rac1 (26.Nd6 Re7+–) 26...Nh4 (26...Kg7 27.Qa4+–) 27.Rf2 (27.Nd6!? Rf6 28.Nf7 Kg7 29.Ng5 Ng2 30.Kg2 Re8+–) 27...Rg7 28.a4 White prepares the advance b5 (better 28.Bh1!?+–) 28...Rb8= 29.b5 (29.Qa3 Ng2 30.Kg2 Rg6+=) 29...h5 (better 29...Nc5!? 30.Qd1 cb5 31.ab5 Rb5–/+) 30.b6= ab6 31.cb6 Nb6 32.Nb6 Rb6 33.Qc2 (33.Qe6 Rg6 34.Qc4 hg4 35.fg4 Ng2 36.Kg2 Rh6=+) 33...hg4=+ 34.fg4 f3?? (better 34...Ng2 35.Rg2 Qc8=+) 35.Bf3+– Qd7 36.Qd1?? (36.Be2 Bd6+–) 36...Qf7?? (better 36...Rf7 37.Ba1 Ba3–+) 37.Ba1 (37.Bh1!? Qg8+–) 37...Rg6 38.h3?? (better 38.Be2 Rf6 39.Qf1+–) 38...Rf6–+ 39.a5 (39.Qe2 Nf3 40.Kh1 Nh4–+) 39...Rb5 40.a6 Nf3 41.Rf3 (41.Kh1 Ba3 42.Rcc2–+) 41...Rf3 42.a7 (42.Rc2 Rg3 43.Rg2 Rg2 44.Kg2 Qa2 45.Kf3–+) 42...Rg3 43.Kh1 Qa7 (43...Rh3 44.Kg2 Rh2 45.Kh2 Qf2 46.Kh1 Rb7 47.Rc6 Rh7 48.Rh6 Rh6) 44.Rc6 (44.Kh2 Re3 45.Qf1–+) 44...Rh3 45.Kg2 Rh4 (45...Qh7 46.Kf2 Qh4 47.Kf1 Rh1 48.Kg2 Rh2 49.Kg1 Qf2) 46.Kg3 Qa2 (46...Qf7 47.Qc1 Rb1–+) 47.Qf1 (47.Rc2 Qf7 48.Rf2 Rh3 49.Kh3 Qf2 50.Qc1–+) 47...Qh2 48.Kf3 Rh3 (48...Qf4 49.Ke2 Rh2 50.Qg2 Rg2 51.Ke1 Rb1 52.Rc1 Rc1) 49.Qh3 Qh3 50.Ke2 (50.Kf2 Rb1 51.Rh6 Bh6 52.Bd4 Rf1 53.Ke2 Qg2 54.Ke3 Qf2) 50...Qe3 51.Kd1 (51.Kf1 Rb1 52.Rc1 Rc1 53.Kg2 Rc2 54.Kf1 Qf2) 51...Qc1 (51...Rb1 52.Kc2 Qc1) 52.Rc1 1–0. JUANKARODA (1780) – Tomo1112 (1810), lichess.org, 2020.

4.Bg2 e5 5.e3 Ne7 6.Ne2 d5 7.d3 Qd6 8.a3 c6 9.Nd2 Be6 10.Rc1 Nd7 11.c4 d4 (better is 11...Rd8!?=) 12.ed4 ed4 (12...f5 13.0–0+/–) 13.c5 Qc7 14.Bd4 (14.Nd4 Bf7+–) 14...0–0 15.0–0 Qc8 16.Nf4 Bf7 17.Ne4 Nf5 18.Bb2 Ne5 19.Bh3 Rd8 20.d4 (20.Nd6 Rd6 21.cd6 Qd7+–) 20...g5 (20...Nc4!? 21.Qe2 Nb2 22.Qb2 g5+–) 21.Nh5 Bh5 22.Qh5 Ng6 23.Nd6! Qd7 24.Qe2 Qe7 25.Qd3 Nh6? 26.Rce1 Qc7 27.Be6 Kh8 28.Re2 Rd6 29.cd6 Qd6 30.Bc4 b5 31.Bb3 Ng8 32.Re6 Qd7 33.Rc1 Rc8 34.Ree1 Qh3 35.Be6 Qe6 36.Re6 Rd8 37.Re4 Ne5 38.Qe3 g4 39.de5 fe5 40.Be5 Be5 41.Re5 Nf6 42.Qf4 (42.Qf4 Ng8 43.Rg5 Rd5 44.Rd5 h6 45.Qe5 Nf6 46.Qf6 Kh7 47.Rd7 Kg8 48.Qd8#; 42.Qg5 Ne4 43.Qd8 Kg7 44.Rc6 Nd6 45.Rd6 a5 46.Re7) 1–0. diablo005 – marek2604, playok.com, 2012.

4.Bg2 e6 5.a4 Ne7 6.e3 c6 7.d4 d5 8.Nd2 Nd7 9.e4 0–0 10.ed5 ed5 11.Nh3 Nf5 12.0–0 Qb6 13.Nf3 Re8 14.Bc3 Nf8 15.Re1 Bd7 16.Re8 Re8 17.a5 Qc7 18.Qd2 b6 19.ab6 ab6 20.Re1 Re1 21.Ne1 c5?? 22.bc5 bc5 23.dc5 Qc5 24.Bb4 Qc6?? 25.Bd5+– Qd5 26.Qd5 (26.Qd5 Be6 27.Qd8+–) 1–0. lietuvis11111 – dzikikonik, playok.com, 2011.

4.Bg2 Nh6 5.d3 Nc6 6.b5 Nb8 7.Nd2 0–0 8.c4 c6 9.bc6 Nc6 10.Ngf3 d5 11.cd5 Qd5 12.0–0 Qd8 (12...Qf7 13.Ne4+=) 13.Nc4 (13.Qb3 e6+=) 13...Be6 14.Qc2 (14.Qa4 Rc8+=) 14...Rc8= 15.Qb3 (15.Qa4 Nf7=) 15...Na5 16.Qa4 Nc4 17.dc4 Bc4 18.Rfc1 Be2 19.Rc8 Qc8 20.Rc1 Qf5 (better 20...Qb8!? 21.Nd4 Ba6=+) 21.Nd4+= Qe5?? (better 21...Qd3+=) 22.Re1+– (22.Qa7?! Ba6+=; 22.Bb7?! Bg4+=) 22...Bb5 (22...Qb8 23.Qb3 Nf7 24.Ne2 e5+–) 23.Re5 (better 23.Qb3 Nf7 24.Re5 fe5 25.Nb5+–) 23...Ba4+– 24.Re7 b6 (better 24...Rb8 25.Bd5 Kh8+–) 25.Ra7+– b5 (25...Be8 26.Ne6 Bf7 27.Nf8 Bf8 28.Bf6 b5+–) 26.Bf1 (better 26.Ne6 Rf7 27.Ra8 Bf8 28.Bd5+– (28.Rf8?! Rf8 29.Nf8 Kf8+–; 28.Nf8?! Rf8 29.Bd5 Kg7+–)) 26...Rc8 (26...Nf7 27.Bb5 Bb5 28.Nb5+–) 27.Nb5+– Rc2? (better 27...Bb5 28.Bb5 Nf7+–) 28.Ra8 Kf7 29.Bc4!! Rc4 30.Nd6 Ke6 31.Nc4 Bc6 (31...Bb5 32.Ne3 Nf7+–) 32.Ra6 Kd5 33.Ne3 Kc5 34.Ba3 Kb5 35.Ra7 f5 36.Rg7 Ng4 37.Ng4 fg4 38.Rh7 Be4 39.Rg7 1–0. JUANKARODA (1780) – Jibss (1695), lichess.org, 2020.

4.Bg2 Nh6 5.e3 0–0 6.Ne2 f5 (6...c6!?=) 7.Bg7+= Kg7 8.d4 e6 9.c4 d5 10.cd5 ed5 11.Nbc3 Qf6 (11...c6!?+/–) 12.Nd5+– Qf7 13.a3 Be6 14.Ndc3 c6 15.Nf4 g5 16.Ne6 Qe6 17.0–0 Nd7 (17...Rd8 18.d5 Qf6 19.Qc2+–) 18.Rc1 Nf6 19.Na4 Ne4 20.Be4 (20.Nc5 Qe7+–) 20...Qe4 (20...fe4 21.Nc5 Qh3 22.f3 (22.Ne4?? Ng4 23.Qg4 Qg4–+; worse is 22.Nb7 Ng4 23.Qg4 Qg4–+) 22...ef3 23.Rf3+/–) 21.Nc5+– Qd5 22.Qe2 Ng4? 23.f3 Nf6 24.Qd3 g4? 25.Qf5?? Qf5–+ (25...Qf5 26.e4 Qc8 27.fg4 Qg4–+) 0–1. diablo005 – wprzytula, playok.com, 2012.

4.g4 d5 5.h3=+.

4.g4 e6 5.g5 (better 5.Bg2=) 5...Ne7?? (better 5...d6=+) 6.gf6+– (6.Bf6?! Bf6 7.gf6 Nd5 8.f7 Kf7=) 6...Bf6 7.Bf6 0–0 8.c4 (better 8.Bg5+–) 8...Rf6= 9.Qc2 Qf8 (9...e5 10.Nf3=) 10.Nc3 (10.Nf3 Nec6=) 10...Rf5 (10...Rf4 11.Qb3=) 11.e3 (11.Nf3 d5=) 11...Qf6 (11...Rf2 12.Nh3 Rf7 13.Ng5=+) 12.Bd3 (12.d4 Qh4+=) 12...Rg5 (better 12...Rf2 13.Nh3 Rf3–/+) 13.Nf3?? (better 13.Rb1 d5 14.f4+=) 13...Nf5?? (better 13...Qf3 14.Be4 Qh3–+) 14.0–0–0?? (better 14.Ng5 Qg5 15.Bf5 ef5 16.Nd5+–) 14...Rh5 (14...Ne3 15.fe3 Qf3 16.h4+–) 15.Rdg1 (15.Ne4 Qa1 16.Qb1 Qg7+=) 15...Nc6= 16.Ne4 Qf7 (16...Qe7 17.Qb2 Nb4 18.Bb1+=) 17.Neg5 (better 17.Qc3!? Kf8 18.Nf6+–) 17...Qe7 18.h4 White prepares the advance c5 (18.Bf5 ef5 19.c5 b5 20.cb6 ab6 21.Qc4 Kg7=) 18...d6 (18...Nb4 19.Qb3 Nd3 20.Qd3–/+) 19.e4 (19.Qb3 e5=) 19...Nfd4 (19...Nb4 20.Qb3 Nd3 21.Qd3–/+) 20.Nd4= Nd4 21.Qc3 (21.Qd1!? e5 22.Be2 Ne2 23.Qe2=+) 21...e5=+ 22.c5 Be6 (22...Kh8 23.Bf1–/+) 23.cd6 cd6 24.b5?? (better 24.Ne6 Ne6 25.Be2 Rh4 26.Rh4 Qh4 27.Qb3=+) 24...Rc8–+ (24...Ba2?! 25.Kb2 Bf7 26.f4–+) 25.Qc8 (25.Kb2 Rc3 26.dc3–+) 25...Bc8 26.Nf3 (26.Rg3–+) 26...Nf3 27.Rg3 Nd4 (27...Rh4 28.Rf1 Rf4 29.Be2–+) 28.Rhg1 (28.Bc4 Be6 29.Be6 Qe6–+) 28...a6 (better 28...Qf7 29.Kb2–+) 29.f4 (29.Kb1 Rh4 30.ba6 ba6–+) 29...ab5 (29...ef4 30.R3g2 d5 31.Kb1–+) 30.fe5 (30.f5 Rh4 31.fg6 Be6–+) 30...de5 31.Rf1 Kg7 (better 31...Qa3 32.Kb1 Be6 33.Bc4 Qg3 34.Be6 Ne6 35.Kb2–+) 32.Bb5 Qc5 33.Kd1 Qb5 34.Rg2 Qf1 0–1. Agiant (1665) – zjhost (1770), lichess.org, 2019.

3.g4 e5

4.a3 d5 5.Bg2 c6 6.h3 d4 (6...a5 7.b5=+) 7.d3 (7.c3 d3=) 7...a5=+ 8.ba5 Qa5 9.Nd2 (9.Qd2 Bc5=+) 9...Be6 10.e3 (10.Qc1 Ra6=+) 10...Qb6 11.Rb1 de3 12.fe3 Qe3 13.Ne2 (better 13.Qe2 Qe2 14.Ne2–/+) 13...Bh6 (13...Ba2 14.Ra1 Bd5 15.Ne4–/+) 14.Rf1 (14.Ne4 Qa7=) 14...Ra6 (better 14...Ba2 15.Ne4 Bb1 16.Qb1 Qb6 17.Nd6 Kf8–/+) 15.Ne4+– Rb6? (15...Bf8 16.d4 Ba3 17.de5 Bb2 18.Rb2 b6+– (18...fe5 19.Nd6 Ke7 20.Rb7 Nd7 21.Rf7 Bf7 22.Nf5 Kf6 23.Qd6 Be6 24.Ne3+–)) 16.Nf6?? (better 16.Rf3 Rb2 17.Re3 (17.Rb2?! Qa7+–) 17...Rb1 18.Qb1 Be3 19.Qb7+–) 16...Nf6–/+ 17.Rf6 Ba2 (better 17...Bg5 18.Re6 Kd7–+) 18.Bc1? (better 18.Rf3 Qg5 19.Ng3–+) 18...Rb1–+ 19.Be3 Rd1 20.Kd1 Be3 21.Nc3 Bf7 22.Ne4 (22.Rf3 Bf4–+) 22...Ke7 23.Rf3 (23.Rf1 Nd7–+) 23...Bf4 24.c3 (24.Ke2 Nd7 25.Rf1 Ra8–+) 24...Bd5 (24...Nd7 25.Kc2–+) 25.c4 (25.Rf1 Nd7 26.Kc2 Ra8–+) 25...Be4 26.de4 Rf8 (better 26...Rd8!? 27.Ke1 Na6 28.Rb3–+) 27.Rb3 b5! 28.cb5 cb5 29.Rb5 Rd8 30.Ke1 Nd7 (30...Nc6 31.Rb7 Ke6 32.Rb6–+) 31.Rb7 (31.Ra5 Rc8–+) 31...Rb8 (better 31...Ra8!? 32.Bf1 Kd8 33.Bb5–+) 32.Rb8 Nb8 33.Kd1 (33.Ke2 Kd6 34.Kd3 Kc5–+) 33...Nc6 (33...Kd6 34.Kc2–+) 34.Kc2 Kd6 35.Kb3 (35.Bf1 Nd4 36.Kc3 Ne6–+) 35...Kc5 36.Bf1 (36.Kc3 Bg3–+) 36...Na5 (36...Kd4 37.Ka4–+) 37.Kc3 Be3 38.a4 (38.Ba6 Bd4 39.Kd3 Bb2–+) 38...Bd4 39.Kd3 (39.Kc2 Nc4 40.Bc4 Kc4–+) 39...Nc4 40.Ke2 Kb4 (40...g5 41.a5–+) 41.Ke1 Ne3 42.Bb5 Nc2 43.Kd2 Ne3 44.Ke2?? (44.Ke1 g5 45.Ke2–+) 44...Nc4 (better 44...h6 45.Bc6–+) 45.Kf3 (45.g5 Nb2–+) 45...Nb2 (better 45...Nd2 46.Ke2 Ne4 47.Bc6–+) 46.h4 (46.g5 Bc3–+) 46...Na4 47.Ba4 Ka4 48.h5 g5 49.Kg3 (49.h6 Kb4 50.Ke2 Kc3–+) 49...Kb4 50.Kf3 Kc3 51.Ke2 Kc2 52.h6 Bc5 53.Kf3 Bf8 (53...Kd3 54.Kg2 Ke4 55.Kf1 Kd3 56.Ke1 e4 57.Kd1 e3 58.Ke1 Bb4 59.Kf1 e2 60.Kg1 e1Q 61.Kg2 Qe2 62.Kg1 Bc5 63.Kh1 Qf1 64.Kh2 Bd6) 54.Ke2 Bh6 55.Kf3 (55.Ke3 Kc3–+) 55...Bf8 (better 55...Kd3 56.Kf2 Ke4–+) 56.Ke2 Bc5 57.Kf3 Kd3 58.Kg3 (58.Kg2 Ke4 59.Kg3 Kd3 60.Kf3 e4 61.Kg3 e3 62.Kg2 e2 63.Kg3 e1Q 64.Kg2 Qf2 65.Kh3 Qf1 66.Kg3 Bd6) 58...Ke4 59.Kg2 Kd3 60.Kf3 (60.Kh3 e4 61.Kh2 e3 62.Kg1 e2 63.Kh1 e1Q 64.Kg2 Qf2 65.Kh3 Qf1 66.Kg3 Bd6) 60...e4 61.Kg2 (61.Kg3 e3 62.Kg2 e2 63.Kg3 e1Q 64.Kg2 Qf2 65.Kh3 Qf1 66.Kg3 Bd6) 61...e3 62.Kf1 (62.Kg1 e2 63.Kh1 e1Q 64.Kg2 Qf2 65.Kh3 Qf1 66.Kg3 Bd6) 62...Kd2 (62...e2 63.Kg2 e1Q 64.Kh2 Qf1 65.Kg3 Bd6) 63.Kg2 (63.Kg1 e2 64.Kh1 e1Q 65.Kg2 Qf2 66.Kh3 Qf1 67.Kg3 Bd6) 63...e2 64.Kf3 (64.Kg3 e1Q 65.Kf3 Qe2 66.Kg3 Bd6 67.Kh3 Qf3) 64...e1Q 65.Kg2 Qf2 66.Kh3 Qf3 (66...Qf1 67.Kg3 Bd6) 67.Kh2 Qg4 68.Kh1 Qh3 0–1. adabriwala – mehdi3718 (1715), lichess.org, 2019.

4.a3 d5 5.h3 a6 (5...c5 6.c3=+) 6.Bg2= Be6 7.e3 (7.d4 Nc6=) 7...Nd7 8.d3 (8.c4 Nb6 9.d3 c5=) 8...Bd6 (8...c6 9.d4=+) 9.Nd2 (9.c4 c6=) 9...Qe7 (9...a5 10.b5=+) 10.Ne2 (10.c4 c6=) 10...c5 (10...a5 11.c3=+) 11.bc5 Nc5 12.Nc3 Nh6 (better 12...Qf7!?=) 13.Nd5+– Qf7 (13...Bd5 14.Bd5 Na4 15.Qb1+–) 14.Nc3 (better 14.Qf3 Bd5 15.Qd5 Qd5 16.Bd5+–) 14...0–0? (14...Rd8 15.Qf3 Qe7 16.Rg1+–) 15.Nde4?? (better 15.d4+–) 15...Ne4 16.Ne4 Bb8 (16...Be7 17.Rf1+–) 17.Nc5 (17.Qd2 Ra7+–) 17...Bd5+– 18.Bd5 (18.e4 Bc6+–) 18...Qd5 19.Ne4 f5 (19...Bc7 20.Bc3+–) 20.gf5 gf5 (20...Nf5 21.c4 Qf7 22.Qf3+–) 21.Ng3 (21.Rg1 Kh8 22.c4 Rg8+–) 21...f4 (better 21...Qa5 22.c3 Bc7+–) 22.Qh5?? (better 22.Ne4 fe3 23.fe3+–) 22...fg3–/+ 23.0–0–0 (23.Qg5 Kh8 24.0–0–0 Qe6 (24...gf2?! 25.Qh6 Bd6 26.Rhf1=) 25.Qg3 Nf5–/+) 23...Qc6 24.Rdg1?? (better 24.fg3 Rf5 25.Qe2–/+) 24...Rf2–+ 25.Rg3 Kh8 (better 25...Kf8 26.Qd1 Nf5–+) 26.Be5=+ Be5 27.Qe5 Qf6 28.Qh5?? (better 28.Qf6 Rf6 29.e4=+) 28…Qa1 0–1. adabriwala – djordje_1994 (1755), lichess.org, 2019.

4.Bg2 Bd6 5.h4 Ne7 6.g5 f5 7.Nf3 b6 8.Ne5 Nec6 9.Nc6 Nc6 10.Bh8 Bb7 11.b5 Na5 12.Bb7 Nb7 13.Nc3 Qe7 14.Bf6 Qe6 15.0–0 Be7 16.Be7 Qe7 17.Nd5 Qd6 18.Nf6 Kf7 19.c3 Nc5 20.d4 Ne6 21.Qb3 Qf4 22.Qd5 Rd8 23.e3 Qh4 24.Qg2 Ng5 25.Nd5 Nh3 26.Kh1 Nf2 27.Kg1 Nh3 28.Kh1 Nf2 29.Kg1 Nh3 30.Kh2 Nf4 31.Kg1 Ng2 32.Kg2 Qe4 33.Kf2 Qd5 34.a4 Re8 35.Ke2 Qe4 36.Rf3 g5 37.Raf1 f4 38.Kd2 Qd5 39.Kd3 c5 40.e4 c4 41.Kd2 Qe4 42.Kc1 Qe2 43.d5 Qa2 44.R1f2 1–0. wk1234 – henrichas, playok.com, 2012.

4.g5 Bg7 5.gf6 Bf6 6.Nf3 Ne7 7.c4 (7.Be5!? Nec6 8.Bf6 Qf6 9.Nc3+=) 7...Nbc6 8.b5 Nd4 9.e4 Nf3 10.Qf3 0–0 11.Qf6?? (better 11.Qg3=) 11...Rf6–+ 12.Bd3 (12.Bg2 d6–+) 12...Rf3 (better 12...d6 13.c5–+) 13.Ke2 (13.Be2 Rf4–+) 13...Qf8 14.Be5 (14.Rg1 Rf2 15.Kd1 Qf3 16.Kc2 d6–+) 14...Rf2 (better 14...d6 15.Bd6 cd6 16.Rf1–+) 15.Kd1 (15.Ke1–+) 15...Qf3 16.Kc2 Qg2 (16...Qh1 17.Bc7 d5 18.cd5–+) 17.Bc7 (17.Re1 d6 18.Bg3–+) 17...Rd2 (better 17...Qh1 18.Bd6 Kf8–+) 18.Nd2= b6?? (18...Kf8=) 19.Raf1?? (better 19.Bd6+–) 19...Bb7 (19...a6 20.Rhg1 Qh3 21.Bd6=+) 20.Rhg1= Qh2?? (better 20...Qh3 21.Rg3 Qe6=) 21.e5 (better 21.Bh2 Re8 22.c5 bc5 23.Bd6+–) 21...Rf8 (21...a6 22.a3 ab5 23.Bd6–+) 22.Rf8 Kf8 23.e6?? (better 23.Rf1 Ke8 24.Rf6–/+) 23...Qg1 (better 23...Qc7 24.ed7 Qd7–+) 24.Ne4?? (better 24.ed7 Qd4 25.d8Q Qd8 26.Bd8+–) 24...Be4–+ 25.Be4 de6 (25...Qc5 26.Bd3 Qc7 27.ed7 Qd7 28.a3–+) 26.Bd6 (26.Bb8 Qd4 27.Bd3 Nf5 28.Bf5 Qc4 29.Kd2 ef5–+) 26...Qd4 27.Be5 Qc4 (27...Qe4 28.Kb3 Qe5 29.Kc2 Qe2 30.Kc3 Qa2 31.Kd4 Qa3 32.Ke5 Qc3 33.Kd6 Nf5 34.Kc7 Qg7 35.Kc6 Ke8 36.c5 Qd7) 28.Bc3 Qe4 29.Kb3 Nd5 30.Bb2 (30.Bg7 Kg7 31.Kb2 Qe2 32.Kb3 Qd1 33.Kc4 Qc2 34.Kd4 Qc3 35.Ke4 Qe3) 30...Qd3 31.Ka4 Qc4 32.Ka3 Qb4 0–1. Agiant (1635) – caitnota (1640), lichess.org, 2019.

3.g4 Bg7

4.e4 b6 5.Bc4 (5.Nf3 Bb7=) 5...Bb7 (5...Nc6 6.b5 Na5 7.Bd3=) 6.Qf3 (6.Nf3 Nc6 7.b5 Na5=) 6...e6 (6...Nc6 7.b5 Na5 8.Bd3=+) 7.Ne2 (7.b5 Nh6 8.Ne2 0–0=+) 7...Nh6 (7...Nc6 8.0–0=+) 8.h4 (8.g5 Nf5 9.gf6 Bf6 10.Bf6 Qf6 11.Qc3–/+) 8...Nf7 9.d4 f5 (9...Nc6!?=+) 10.gf5= ef5 11.Bf7 (11.Nbc3 Nd6 12.Bd5 Bd5 13.ed5 b5+=) 11...Kf7 12.Qb3 Ke8 (12...Kf8!? 13.Nbc3 fe4=) 13.d5 Qe7 (13...Bb2 14.Qb2 Kf7 15.h5+=) 14.ef5 (14.Bg7 Qg7 15.Nbc3 fe4+–) 14...Rf8 (14...a5 15.Bg7 Qg7 16.Nbc3 ab4 17.Qb4+=) 15.Rh3 (15.Bg7 Qg7 16.Nbc3 Rf5+–) 15...Bb2 16.Qb2 Qf7 (16...Kd8 17.h5 Qf7 18.hg6 Qf5 19.Rh2 hg6 20.c4=) 17.Re3+– Kd8 18.c4 (18.Nd4 gf5 19.Nc3 f4+–) 18...Qf5 19.Nd4 (19.Ng3 Qf4 20.Re4=) 19...Qf7 (better 19...Qf6!?=) 20.Nc3+= Re8 (20...Na6 21.Ne4 Qf4 22.Ne2+–) 21.Qd2 (21.0–0–0 a5 22.Ne6 Kc8 23.Nc7 A) 23...Kc7 24.Nb5 Kd8 25.Nd6 Bd5 26.Rd5 Qd5 A1) worse 27.Ne8 Qc4 28.Kd1 Qf1 (28...ab4 29.Qf6 Kc8 30.Nd6 Kc7 31.Nc4 Nc6 32.Qd6 Kb7 33.Qd7 Ka6 34.Qc6 Rd8 35.Kc2 b3 36.Rb3 Rd2 37.Kd2 Ka7 38.Nb6 h6 39.Nc8) 29.Re1 Qd3 30.Kc1 ab4 31.Qf6 Kc8–/+; A2) 27.Re8 Kc7 28.cd5 h5 29.Qf6 Nc6 30.Ra8 b5 31.dc6 ab4 32.Nc8 b3 33.Qd6 Kd8 34.Qd7; B) 23...Re3 24.fe3 Qf6+– (24...Kc7 25.Nb5 Kd8 26.Qh8 Qe8 27.Qf6 Qe7 28.Qb6 Ke8 29.Rf1 Nc6 30.Nc7 Kd8 31.Na8 Ke8 32.Nc7 Kd8 33.dc6 Qe3 34.Qe3 Bc6 35.Qb6 Bf3 36.Nd5 Ke8 37.Qf6 Bd5 38.Qf8)) 21...Re3 22.fe3 Qf6 (22...Qe7 23.0–0–0+–) 23.0–0–0 a6 (23...Qh4 24.Rf1 Qe7 25.e4+–) 24.Qd3 (24.h5 a5 25.hg6 hg6 26.b5+–) 24...c5? (better 24...Qh4 25.Rf1 Qe7+–) 25.dc6 (25.bc5 bc5 26.Rf1 Qe5+–) 25...Nc6 26.Nc6?? (26.Nd5 Qd6 27.Nc7 Qe7 (27...Kc7 28.Nb5 ab5 29.Qd6 Kc8 30.Rf1 Nd8 31.Rf8 Bc6 32.cb5 h5 33.bc6 Ra7 34.Qe7 Kc7 35.Qd7 Kb8 36.Rd8; 27...Qc7?? 28.Ne6 Kc8 29.Nc7 Kc7 30.Qd7 Kb8 31.Rd6+–) 28.Nc6 Bc6 29.Na8 Ba8+–) 26...Qc6?? (26...Bc6!? 27.Kb2 Rc8+=) 27.Rf1 (better 27.Nd5 Rc8 28.Nb6+–) 27...Qe6?? (better 27...b5 28.c5 Qe6+–) 28.Qd4 (better 28.Nd5 Qe8 29.Nb6+–) 28...Rc8 (28...Qe7 29.Qb6 Kc8+–) 29.Rf8 Kc7 (29...Ke7 30.Qg7 Kd6 31.Rf6 Rc4 32.Re6 de6 33.Qb7 Rc3 34.Kd2+–) 30.Qf4 (30.Qf4 d6 31.Rf6+=) 1–0. Piron,Jean_Marie – Jacobs,Hein, LIC, 2012.

4.e4 d5 5.Nc3 de4 6.Ne4=+.

4.g5 d5 5.gf6 ef6 6.e3 Ne7 7.c4 (7.Nf3 Nbc6=+) 7...Be6 8.Qc2 Qd6 (8...Qd7 9.cd5 Nd5 10.a3=+) 9.c5 Qc6 (9...Qd7 10.b5=+) 10.Bg2 (10.b5 Qd7=) 10...Nd7 11.d4 Bf5 (11...a6 12.Nc3=) 12.Qb3= Be6?? (better 12...Qe6=) 13.b5+– Nc5 14.bc6 (14.dc5?! Qc5 15.Ne2 Qd6+–) 14...Nb3 15.ab3 (better 15.cb7!? Rb8 16.ab3 Rb7+–) 15...Nc6 16.Bc3 (16.Ba3 Bf8+–) 16...0–0 (16...Bf8 17.Ne2 Bd6 18.Na3+–) 17.Nd2 Bf5? (better 17...a5!?+–) 18.Ne2 (18.Bd5 Kh8+–) 18...Be6 (18...Ne7 19.Bb4 Kf7 20.Be7 Ke7 21.Bd5+–) 19.Nf4 Bf7 20.Nd5 Rac8 (20...Rfd8 21.Nc7 Rac8 22.Nb5+–) 21.Nf4 (21.Nb4 Nd8 22.Ra7 Re8+–) 21...Be8 (21...Ra8 22.Nd3+–) 22.d5 (22.Ne6 Rf7+–) 22...Ne7 (22...Nd8 23.Ra7 f5 24.Bg7 Kg7 25.Rg1+–) 23.e4 (23.Ra7 Rb8+–) 23...Bb5 (23...Bd7 24.Ra7 Rb8 25.Nc4+–) 24.Ne6 (24.Ra7 Ba6+–) 24...Rfe8 (24...a6 25.Nf8 Kf8 26.Rg1+–) 25.Ra7 Ba6 (25...Bd7 26.Ng7 (worse 26.Rb7 Be6 27.de6 Nc6+–) 26...Kg7 27.e5+–) 26.Bh3 (better 26.Bf1 Bf1 27.Rf1 Rb8 28.Nc7 Rec8+–) 26...Rb8 (26...Bh8+–) 27.Nc7 Rf8 (27...f5 28.Bg7 Kg7 29.Bf1 Bf1 30.Ne8 Re8 31.Kf1+–) 28.Na6 ba6 29.Re7 Ra8 0–1. afsharian – monsur4r, lichess.org, 2018.

4.g5 e6 5.gf6 Nf6 6.Nc3 (6.Nf3 d6=) 6...0–0=+ 7.Bg2 (7.Nf3 d5=+) 7...Nc6 8.b5 Nd4 9.Ne4?? (9.e3!? Nf5 10.Nf3=+) 9...Nb5?? (better 9...Ne4 10.Be4 Qh4–+ (10...Nb5?! 11.Bg7 Kg7 12.Nf3–/+)) 10.Bf6 Bf6 (10...Rf6?! 11.Nf6 Qf6 12.Rb1+=) 11.Nf6 Qf6 12.c4?? (better 12.Nf3–/+) 12...Nd4 (12...Qf2) 13.e3 (13.f3 Nc2!! 14.Qc2 Qa1 15.Kf2–+) 13...Nc6 (13...Qf2) 14.Ne2?? (better 14.Nh3–+) 14…Qf2 0–1. Agiant – vivekg342, lichess.org, 2019.

4.g5 Kf7 5.e3 f5 (5...fg5!? 6.d4 d6=+) 6.Bg7 Kg7 7.c4 (7.Nf3 e5 8.Ne5 Qg5+=) 7...Kf8 (7...e5!?=) 8.Qc2 e6?? (better 8...h6 9.Qc3 Rh7+=) 9.Qc3+– Qg5 (9...Nf6+–) 10.Qh8 Nc6 (10...Qf6 11.Qf6 Nf6 12.d4+–) 11.Nf3 (better 11.b5 Nce7 12.Qh7+–) 11...Nb4 (11...Qh5 12.Nd4 Nb4+–) 12.Ng5 Nc2 13.Ke2 (better 13.Kd1 h6 14.Nh7 Kf7+–) 13...Na1 14.Qh7 d6 (14...Nh6 15.Qh6 Ke8 16.Qg6 Ke7 17.Qg7 Kd6 18.Nf7 Kc6 19.Nd8 Kb6 20.Qb2 Nb3 21.Qb3 Kc5 22.d4 Kd6 23.Qb4 c5 24.Qc5) 15.Qf7 1–0. Agiant (1665) – OliverSiryes (1730), lichess.org, 2021.

4.g5 d6

5.c4 Be6 6.Qb3 Nc6 (6...c6 7.Bg2=) 7.d3 (7.Bg2 h6=) 7...Qd7 (7...Bc8 8.b5 Ne5 9.Bg2=) 8.Bg2 0–0–0 (8...h6 9.b5 Nd8 10.Nf3=) 9.h4 (9.b5 Ne5 10.Qa4 Kb8+= (10...fg5?? 11.Qa7 c6 12.b6+–)) 9...Ne5 (9...Kb8 10.b5 Ne5 11.Nd2=) 10.Qa3 Kb8 11.b5 (11.Bd4 b6=) 11...fg5 (11...h6 12.f4 Ng4 13.Bd4=) 12.Bd4 (better 12.hg5!? Rf8 13.Rh4+=) 12...b6= 13.Qa6 (13.hg5 Rf8 14.Rh4 Bf5+–) 13...Qc8 (13...d5 14.Kd1 Qd6 15.hg5 Bc8=) 14.Qa4?? (14.Qc8 Bc8 15.Kd1=+ (15.hg5?? Nd3 16.ed3 Bd4–+)) 14...Bf6 (better 14...Nd3 15.ed3 Bd4 16.hg5 Ba1–+) 15.Nd2 (better 15.Bc3 gh4 16.d4–/+) 15...Ng4?? (better 15...Nd3 16.ed3 Bd4–+) 16.Nb3 Bd4 (16...gh4 17.Na5 Ne5 18.Rh4=) 17.Nd4+= d5?? (17...Bd7 18.Bc6 Bf5+–) 18.Nc6 Kb7 (18...Ka8 19.Qa7) 19.Qa7 1–0. Agiant – ItsJud, lichess.org, 2019.

5.e3 c6 6.c4 (6.f4 e5=+) 6...Qb6 (6...e5 7.d4=+) 7.Bg2 (7.a3!?=+) 7...Qb4–/+ 8.Qc2 Bf5 9.Nc3?? (better 9.e4 Be6 10.Na3–/+) 9...Bc2–+ 10.Kf1 Qb2 11.Ke2 Qa1 12.Nf3 Qb2 13.Nd4 fg5 14.Ne6 Bc3 15.Re1 Nf6 (better 15...Bf5 16.Nc7 Kd8–+) 16.d4 Ne4 (16...Be4 17.Kf1 Ng4 18.Nc7 Kf7 19.Kg1 Qf2 20.Kh1 Qe1) 17.d5 (17.Nc7 Kf7 18.Be4 Be4 19.Kf1 Be1 20.Ke1 Bf3 21.Na8 Qe2) 17...Nc5 (17...Bd1 18.Kd1 Nf2) 18.dc6 bc6 (18...Be4 19.Kf1 Nd3 20.Nc7 Kf7 21.Kg1 Qf2 22.Kh1 Qe1) 19.Bc6 Nc6 20.Nc7 Kd7 21.Nd5 (21.Kf3 Be1 22.Kg2 Be4 23.Kh3 Qe2 24.Na8 Qf3) 21...Bd3 (21...Be4 22.Kf1 Nd3 23.Nf6 Bf6 24.Re2 Qc1 25.Re1 Qe1) 22.Kf3 Be1 23.e4 (23.Nb4 Qf2 24.Kg4 Qg2) 23...Qf2 24.Kg4 h5 (24...Qg2) 25.Kg5 Bd2 (25...Ne4 26.Kg6 Rag8) 26.Kg6 (26.Nf4 Qf4 27.Kg6 Rag8) 26...Qf6! 27.Nf6 (27.Nf6 Ke6 Mate attack) 27...ef6 (27...Ke6 28.Kg7 ef6 29.e5 Rhg8) 28.Kf6 (28.h4 Rhg8 29.Kf5 Be4 30.Kf6 Raf8) 28...Ne4 29.Kg7 (29.Kg6 Rag8 30.Kf7 Bc4) 29...Rhg8 30.Kh7 (30.Kf7 Bc4) 30...Raf8 (30...Nc5) 31.c5 (31.a3 Nc5) 31…Nf6 (31...Nc5) 0–1. Agiant – PleaseDontQuit, lichess.org, 2019.

5.e3 e5 6.gf6 Nf6 7.d4=+.

5.e4 b6 6.gf6 (6.Nf3 e5 7.Rg1 c6=) 6...ef6 (6...Nf6 7.Bg2 e5 8.d4=+) 7.Bc4 Bb7 8.d3 Nd7 9.f4 (9.Nf3 Qe7 10.Nc3 f5=) 9...Qe7 10.Nd2 (10.Qe2 f5 11.Bg7 Qg7–/+) 10...0–0–0 (better 10...d5 11.Bb3 de4 12.de4 0–0–0–/+ (worse 12...Be4 13.Ne4 Qe4 14.Qe2 Qe2 15.Ne2=+)) 11.Qg4?? (11.Ne2 f5 12.Bg7 Qg7–/+) 11...Nh6 (11...d5!? 12.Bb3 f5 13.Qg5 Bb2 14.Qe7 Ne7 15.Rb1–+) 12.Qg3? (12.Qe6!? Qe6 13.Be6–/+) 12...f5 (12...d5 13.Bb3 de4 14.de4 Be4 15.Ne4 Qe4 (15...Qb4 16.Nd2+=) 16.Kf2 Ne5 (16...Qh1?! 17.Nf3 Nf5 18.Qh3 Qa1 19.Ba1–+; 16...Qb4?! 17.Ne2–+) 17.Be6 Kb8–+) 13.Bg7 Qg7 14.0–0–0 (14.c3 Nf6–/+) 14...Qa1–+ 15.Nb1 fe4 16.de4 Qg7?? (better 16...Be4!? 17.Nf3 Nf5–+) 17.Ne2 (17.Nc3=+) 17...Rhf8 (17...Rhe8!?–/+) 18.Qd3 (18.Nd4!? Be4 19.Ne6+=) 18...Rde8 19.Ba6 Ng4 (19...Qa1 20.Qc4 Qf6 21.Nbc3=) 20.Bb7 Kb7 21.a4?? (better 21.Qf3 Nde5 22.Qc3=+) 21...Nf2–+ 22.Qd5 Kb8 23.Nd4 Re4?? (better 23...Nf6 24.Nc6 Ka8–+) 24.Nc6= Kc8 25.Na7 Kd8 (better 25...Kb8 26.Nc6 Kc8 27.Na7 Kb8 28.Nc6 Kc8 29.Na7=) 26.Qa8 (26.Qb7 Ke8 27.Rhf1 Ref4 28.Rfe1 Ne5 29.Rd6+–) 26...Ke7–/+ 27.Nc6 (27.Qb7 Rff4 (worse 27...Ref4 28.Qc7 Nd1 29.Rd1+=) 28.Nc6 Kf8 29.Qc8 Re8 30.Qc7 Rf6–/+) 27...Kf6 28.Qa6? (better 28.Qb7 Qh6 29.Qc7 Qf4 30.Nd2 Nh1 31.Rh1–/+) 28...Nh1–+ 29.a5 (29.Qf1 Qh6 30.Nd2 Rf4 (30...Qf4 31.Qh1 Rb4 32.Rf1 Ra4 33.Rf4 Rf4 34.Qe1=) 31.Qh1 Qh3–+) 29...Qh6 (better 29...Nf2 30.Nc3 Ke6 31.Rd3 Nd3 32.Qd3 Ref4 33.Qd5 Kf6 34.Ne4 Re4 35.Qe4 Qh6 36.Kb2–+) 30.Nd2 (30.Rh1 Rf4 31.Nd2 ba5 32.Qa5 Rf2–+) 30...Qf4 (better 30...Nf2 31.Ne4 Ne4–+) 31.Rf1 (31.Rh1 Rfe8 32.Rf1 Re1 33.Kb2 Rf1 34.Qf1 Qf1 35.Nf1 ba5 36.ba5–+) 31...Nf2 32.Kb1 (32.ab6 Nb6 33.Qa1 Kf7 34.Qc3–+) 32...Qd2 33.ab6 Nb6 34.Qa1 Kg5 35.Rg1 Kh6 36.Rg6 hg6 37.b5 (37.Qb2 Re1 38.Ka2 Ra8 39.Na5 Nc4 40.Kb3 Na5 41.ba5 Rb8 42.Ka2 Qa5 43.Qa3 Qa3 44.Ka3 Ra1) 37...Re1 38.Ka2 (38.Kb2 Rf3 39.Qe1 Nc4 40.Kb1 Qe1 41.Ka2 Ra3) 38…Qd5 (38...Qd5 39.c4 Qc4 40.Ka3 Ra8 41.Na7 Ra7 42.Kb2 Nd3; 38...Qc2 39.Ka3 Ra1 40.Kb4 Nd3) 0–1. Agiant – Vijay289, lichess.org, 2020.

5.e4 e5 6.Bh3=+.

5.gf6 Bf6 6.Nc3 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Nc6 10.Bb2 (better 10.b5!? Nb4 11.Bg2=) 10...Nb4–/+ 11.e3 Bd7 12.d4 (12.Bg2 Bc6 13.Bc6 Nc6–/+) 12...Qa8 (better 12...Bc6 13.f3 Nh6–/+) 13.Bc4?? (better 13.Bg2–/+) 13...b5–+ 14.Bb3 (14.e4 bc4 15.Nge2–+) 14...Qh1 15.Nce2 Qa8 (15...Qh2!? 16.Qa1 Bc6 17.Bc3–+) 16.Qd2 Na2 (16...c5 17.dc5 Bb2 18.Qb4 Qa1 19.Kd2–+) 17.Qd3 (17.Nf4 c6–+) 17...e5 (17...c5 18.Bg8 Rg8 19.dc5 Bb2 20.Qb3 Qa5 21.Kf1–+) 18.c4 (18.c3 Ke7–+) 18...bc4 (better 18...e4 19.Qb1 Nb4 20.Nf4–+) 19.Qc4 c5 (better 19...Qa5 20.Kf1 d5 21.Qd5 Qd5 22.Bd5 Nb4 23.de5 Nd5 24.ef6 Ndf6–+ (worse 24...Ngf6 25.e4–+)) 20.Qf7= Kd8 21.Qf8 Be8 22.Bc3?? (better 22.Qd6 Bd7 23.Bg8 Qa5 24.Kf1=) 22...Nc3 (22...Be7 23.Qg7 Nc3 24.Nc3 Qa1 25.Ke2 Qc3 26.Bg8 cd4 27.Kf1 Bb5 28.Kg2 Qc6 29.Nf3–+) 23.Nc3 (23.Qd6 Kc8 24.Be6 Kb7 25.Nc3 Qa1 26.Kd2 Qb2 27.Kd3–+) 23...Qa1 24.Ke2 Qb2 (24...Be7 25.Qg7 Qc3 26.Bg8 cd4 27.Kf1–+) 25.Kd3 (25.Kf1 Be7 26.Qg7 Bh4–+) 25...Qb3 (better 25...Be7 26.Qg7 ed4 27.ed4 cd4 28.Nge2 dc3 29.Qc3 Qc3 30.Nc3–+) 26.Qd6 Kc8 27.Qa6 (27.Qc5 Kd7 28.de5 Be7–+) 27...Kd7 28.Qa7 Ke6 29.Qb6 (29.d5 Kd6 30.Qa6 Ke7 31.Qa7 Bd7 32.Qc5 Kf7 33.Qc7 e4 34.Ke2–+) 29...Kf7 (better 29...Qb6 30.d5 Kd6 31.Nge2 Bb5 32.Kd2 Be2 33.Ne2 Qb4 34.Kd1 Qb1 35.Kd2–+) 30.Qf6?? (better 30.Qb3 Kg7 31.dc5+–) 30...Nf6–+ 31.de5 Nd5 (31...Bb5 32.Kd2 Rd8 33.Kc1 Qc3 34.Kb1 Bd3 35.Ka2 Ra8) 32.e4 Qc3 33.Ke2 Qc4 (33...Nf4 34.Kd1 Ba4) 34.Ke1 Nc3 (34...Nc3 35.f4 Qe4 36.Kf2 Nd1 37.Kg3 Qe3 38.Nf3 Qf2 39.Kg4 Ne3 40.Kh3 Qf3 41.Kh4 Qg4; 34...Qe4 35.Ne2 Bb5 36.Kd2 Qe2 37.Kc1 Bd3 38.e6 Ke6 39.h3 Qc2) 0–1. Agiant – GALA47 (1655), lichess.org, 2019.

2.Bb2 Nf6

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

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

3.b5 b6 4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 b6).

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

3.c4 d5 4.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d5).

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

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

3.e3 b6 4.b5 Bb7 5.Nf3 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 Nf6 4.Nf3 g6 5.b5).

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

3.Nf3 e6 4.a3 Bg7 5.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.e3 Bg7 5.Nf3).

3.Nf3 Rg8 4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 Rg8).

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

3.g4 Bg7 4.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.g4).

3.a3 Bg7

4.c4 0–0 5.e3 d5 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d5 6.a3).

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

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

4.e3 0–0 5.Nf3 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.a3).

4.e3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 d6).

4.e3 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.e3 Bg7).

4.e3 e6 5.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 g6 5.Nf3 Bg7).

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

3.b5 Bg7

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

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

4.c4 0–0 5.e3 d6 6.d4 c5 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 c5 7.b5).

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

4.c4 a5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 g6 4.c4 Bg7).

4.c4 d6 5.e3 0–0 6.Be2 e5 7.Nf3 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).

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

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

4.e3 0–0 5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5 0–0 5.e3).

4.e3 0–0 5.c4 d6 6.Nf3 e5 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).

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

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

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

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

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

4.Nf3 0–0 5.e3 d6 6.Be2 c5 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.0–0 c5 7.b5).

4.g3 0–0 5.Bg2 (--> 1.b4 Nf6 2.Bb2 g6 3.g3 Bg7 4.Bg2 0–0 5.b5).

3.Nc3 Bg7

4.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.Nc3).

4.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.Nc3).

3.c4 d6

4.d4 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.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6).

4.e3 Bg7 5.Nf3 0–0 6.d4 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5).

4.Nf3 Bg7 5.d4 0–0 6.e3 e5 7.Nc3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0–0 7.d4).

3.c4 Bg7

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

4.a3 (--> 1.b4 Nf6 2.Bb2 g6 3.a3 Bg7 4.c4).

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

4.a4 0–0 5.e3 a5 6.b5 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 a5).

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

4.a4 a5 5.b5 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 a5).

4.a4 d6 5.b5 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6).

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

4.b5 0–0 5.a4 d6 6.Nc3 e5 7.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 e5 7.Nc3).

4.b5 0–0 5.e3 c6 6.a4 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 c6).

4.b5 0–0 5.e3 d6 6.a4 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 Nbd7).

4.b5 0–0 5.e3 d6 6.a4 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 e5).

4.b5 d6 5.a4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6).

4.Qc2 0–0 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.Qc2).

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.d4 c6 6.e3 e6 7.Nf3 d5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nc3 e6).

4.Nc3 0–0 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.Nc3).

4.Nc3 d6 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.Nc3).

4.d3 0–0 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.d3).

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

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

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

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

4.e3 d5 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.c4). 4.e3 d6 5.d4 0–0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

4.e3 d6 5.d4 0–0 6.Nf3 b6 7.Nbd2 Bb7 8.Be2 Nbd7 9.0–0 (--> 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 Nbd7 9.Nbd2).

4.e3 d6 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3).

4.e3 d6 5.Nf3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

4.e3 d6 5.Nf3 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.e3 d6 5.Nf3 Nbd7 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 Nbd7).

4.e3 d6 5.Nf3 Nbd7 6.Be2 e5 7.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0 Nbd7).

4.e3 d6 5.Nf3 e5 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

4.e3 d6 5.h3 0–0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.h3).

4.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4).

4.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6).

4.Nf3 d6 5.e3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

4.Nf3 d6 5.e3 0–0 6.Nc3 e5 7.Be2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0 Nbd7 8.Nc3).

4.g3 0–0 5.Nf3 c6 6.Na3 d5 7.Bg2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 c6 6.Bg2 d5 7.Na3).

4.g3 0–0 5.Bg2 (--> 1.b4 Nf6 2.Bb2 g6 3.g3 Bg7 4.Bg2 0–0 5.c4).

4.d4 0–0

5.e3 b6 6.Nd2 Bb7 7.Ngf3 d6 8.Be2 Nbd7 9.0–0 (--> 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 Nbd7 9.Nbd2).

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

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

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

5.e3 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.d4).

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

5.Nf3 d6 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

4.d4 d6

5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6 5.d4).

5.e3 0–0 6.Be2 Nbd7 7.Nf3 c6 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

5.e3 0–0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.e3 0–0 6.Nf3 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0–0 7.c4).

5.e3 0–0 6.Nf3 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).

5.e3 Nbd7 6.Nf3 0–0 7.Be2 c6 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.d4).

5.Nf3 0–0 6.Nc3 Bg4 7.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Bg4 7.Nc3).

4.e3 0–0

5.b5 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5 0–0 5.e3).

5.Nc3 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Nc3).

5.Nc3 e5 6.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0–0).

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

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

5.d4 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 d6 6.Nf3 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0–0 7.c4).

5.d4 e6 6.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e6).

5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3).

5.Nf3 b6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6).

5.Nf3 b6 6.d4 Bb7 7.Be2 d6 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).

5.Nf3 c6 6.Be2 d5 7.0–0 Bg4 8.d4 Nbd7 9.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 Bg4 8.Be2 Nbd7 9.0–0).

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

5.Nf3 d5 6.d4 Bf5 7.Nc3 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nc3 Bf5).

5.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

5.Nf3 d6 6.d4 c6 7.Be2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

5.Nf3 d6 6.Be2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6).

5.Nf3 d6 6.Be2 c6 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 c6 7.Be2).

5.Nf3 d6 6.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

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

5.Nf3 d6 6.Be2 e5 7.d4 Nbd7 8.0–0 Re8 9.Nc3 e4 10.Nd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0–0 e4 9.Nfd2 Re8 10.Nc3).

5.Nf3 e6 6.d4 c6 7.Nbd2 d5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 e6).

5.h3 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.h3).

4.Nf3 0–0

(--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0).

5.Nc3 d6 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Nc3).

5.e3 b6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6).

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

5.e3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

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

5.e3 d6 6.Be2 b6 7.0–0 Bb7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2 Bb7 7.0–0 d6).

5.e3 d6 6.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

5.g3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6).

5.g3 d6 6.Bg2 Nbd7 7.0–0 e5 8.d3 Re8 9.Nc3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5 7.0–0 Nbd7 8.Nc3 Re8 9.d3).

3.d3 Bg7

4.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.d3).

4.c4 0–0 5.e3 d6 6.Nf3 e5 7.Be2 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.d3).

4.c4 d6 5.Nf3 0–0 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d3).

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

3.d4 Bg7

4.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.d4).

4.e3 0–0 5.c4 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

3.e3 d5

4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d5).

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

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

3.e3 d6

4.a3 e5 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 g6).

4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6).

4.d4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 d6).

4.Nf3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 g6).

4.Nf3 Bg7 5.d4 0–0 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

4.Nf3 Bg7 5.d4 0–0 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d4).

3.e3 e6

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.e3).

4.a3 Bg7 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 g6 4.e3 Bg7).

4.b5 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 e6).

3.e3 Bg7

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

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

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

4.d3 0–0 5.Nf3 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d3).

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

4.d4 d6 5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6 5.d4).

4.d4 d6 5.Nf3 b6 6.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 b6).

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

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

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

4.Be2 d5 5.Nf3 0–0 6.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.d3 0–0 6.Be2).

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

4.f4 0–0 5.Nf3 d6 6.b5 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0–0 5.f4 d6 6.Nf3).

4.f4 0–0 5.Nf3 e6 6.Be2 d5 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0–0 5.Nf3 d5 6.Be2 e6).

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

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

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

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

4.f4 d6 5.Nf3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0–0 5.Nf3 d6).

4.f4 e6 5.Nf3 d5 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0–0 5.Nf3 d5 6.Be2 e6).

4.g4 0–0 5.g5 Nh5 6.c3 (--> 1.b4 Nf6 2.Bb2 g6 3.g4 Bg7 4.g5 Nh5 5.c3 0–0 6.e3).

4.h3 0–0 5.c4 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.h3).

4.h3 d6 5.c4 0–0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.h3).

4.h3 d6 5.Nf3 0–0 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.h3).

4.c4

4.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3).

4.c4 b6 5.Nf3 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.c4 b6 5.Nf3 Bb7 6.Be2 d6 7.d4 Nbd7 8.0–0 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 Nbd7).

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

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

4.c4 d6 5.b5 e5 6.a4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 e5).

4.c4 d6 5.d4 0–0 6.Nf3 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0–0 7.c4).

4.c4 d6 5.d4 0–0 6.Nf3 c6 7.Be2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

4.c4 d6 5.d4 c6 6.Be2 0–0 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 c6 7.Be2).

4.c4 d6 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3).

4.c4 d6 5.Nf3 Bg4 6.Be2 Nbd7 7.0–0 0–0 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Bg4 7.Be2 Nbd7 8.0–0).

4.c4 e5 5.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

4.c4 0–0

5.b5 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5 0–0 5.e3).

5.b5 d6 6.a4 e5 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 0–0 5.c4 d6 6.e3 e5 7.Nf3).

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

5.Nc3 d6 6.Nf3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0–0).

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

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

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

5.d4 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 d6 6.Nf3 c6 7.Be2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

5.Be2 d6 6.Nf3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3).

5.Nf3 b6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6).

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

5.Nf3 c6 6.d4 d5 7.Nbd2 Bg4 8.Be2 e6 9.0–0 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 Bg4 8.Be2 Nbd7 9.0–0 e6).

5.Nf3 c6 6.Be2 d6 7.0–0 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0 c6).

5.Nf3 d6 6.Be2 b6 7.0–0 Bb7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2 Bb7 7.0–0 d6).

5.Nf3 d6 6.Be2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6).

5.Nf3 d6 6.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

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

5.h3 d6 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.h3).

4.d4 0–0

5.c4 d6 6.Bd3 Nbd7 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Nbd7 7.Bd3).

5.Nd2 d5 6.Ngf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d4 0–0 5.Nbd2 d5 6.e3).

5.Nf3 b6 6.c4 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 b6).

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

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

5.Nf3 d5 6.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d4 0–0 5.Nbd2 d5 6.e3).

5.Nf3 d6 6.c4 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Nbd7).

5.Nf3 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d4).

5.Nf3 d6 6.Be2 Nbd7 7.0–0 c6 8.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

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

4.Nf3

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

4.Nf3 a5 5.b5 c6 6.c4 0–0 7.d4 d5 8.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 a5 8.b5).

4.Nf3 b6 5.c4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 Nf6 4.Nf3 g6 5.c4 Bg7).

4.Nf3 b6 5.Be2 Bb7 6.0–0 0–0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2 Bb7 7.0–0).

4.Nf3 c6 5.c4 d5 6.d4 Bg4 7.Nbd2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 Bg4).

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

4.Nf3 c6 5.Be2 d5 6.0–0 0–0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d5 7.0–0).

4.Nf3 c6 5.Be2 d6 6.0–0 0–0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0).

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

4.Nf3 d5 5.d4 c6 6.Nbd2 Nbd7 7.c4 0–0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 Nbd7 8.Be2).

4.Nf3 d5 5.Be2 0–0 6.0–0 b6 7.c4 Bb7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2 Bb7 7.0–0 d5).

4.Nf3 0–0

5.a3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 0–0 5.Nf3).

5.a3 d5 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d5 6.a3).

5.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e3).

5.d3 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d3).

5.d4 a6 6.c4 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 a6).

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

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

5.d4 d5 6.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d4 0–0 5.Nbd2 d5 6.e3).

5.d4 d6 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 d6 6.Nbd2 Nbd7 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Nbd7 7.Nbd2).

5.d4 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d4).

5.Be2 b6 6.0–0 Bb7 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2 Bb7 7.0–0).

5.Be2 b6 6.0–0 Bb7 7.d4 d6 8.Nbd2 Nbd7 9.c4 (--> 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 Nbd7 9.Nbd2).

5.Be2 b6 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2).

5.Be2 c5 6.b5 d6 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.0–0 c5 7.b5).

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

5.Be2 c6 6.0–0 d5 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d5 7.0–0).

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

5.Be2 c6 6.c4 d5 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.0–0).

5.Be2 c6 6.c4 d6 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 c6 7.Be2).

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

5.Be2 d5 6.0–0 c6 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d5 7.0–0).

5.Be2 d5 6.0–0 Bg4 7.c4 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d5 7.0–0 Bg4).

5.Be2 d5 6.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.d3 0–0 6.Be2).

5.Be2 e6 6.0–0 d5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.Be2 0–0 6.0–0 e6).

5.c4

5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3).

5.c4 b6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6).

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

5.c4 d5 6.d4 Bg4 7.Nbd2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nbd2 Bg4).

5.c4 d6 6.d4 Nbd7 7.Nbd2 b6 8.Be2 Bb7 9.0–0 (--> 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 Nbd7 9.Nbd2).

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

5.c4 d6 6.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

5.c4 d6 6.Be2 e5 7.d3 Nbd7 8.0–0 Re8 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.d3 Re8 8.0–0 Nbd7).

5.c4 e6 6.d4 c6 7.Nc3 d5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.Nc3 e6).

5.Be2 d6

6.0–0 b6 7.d4 Bb7 8.Nbd2 Nbd7 9.c4 (--> 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 Nbd7 9.Nbd2).

6.0–0 Nbd7 7.c4 e5 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0–0).

6.0–0 e5 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0).

6.b5 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0–0 5.Nf3 d6 6.Be2).

6.c4 b6 7.d4 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).

6.c4 c6 7.d4 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

6.d4 Nbd7 7.0–0 c6 8.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

4.Nf3 d6

(--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d6).

5.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

5.c4 b6 6.d4 0–0 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).

5.c4 c6 6.d4 0–0 7.Be2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0 Nbd7 8.d4).

5.c4 e5 6.d3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d3 e5).

5.c4 Bg4 6.Be2 0–0 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Bg4 7.Be2).

5.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 d6 5.Nf3).

5.d4 0–0 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 0–0 6.Be2 b6 7.c4 Bb7 8.Nbd2 Nbd7 9.0–0 (--> 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 Nbd7 9.Nbd2).

5.d4 Nbd7 6.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Nbd7).

5.Be2 0–0 6.0–0 c6 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6 7.0–0).

5.Be2 e5 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.0–0 e5).

3.e4 d6

4.b5 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 Bg7 4.b5 d6).

4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e4 d6).

4.d3 Bg7 5.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 d6 5.e4).

4.Nf3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e4 d6).

4.Nf3 Bg7 5.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 d6 5.e4).

4.Nf3 Bg7 5.d3 e5 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 e5).

3.e4 Bg7

4.a3 (--> 1.b4 Nf6 2.Bb2 g6 3.a3 Bg7 4.e4).

4.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e4).

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

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

3.Nf3 b6

4.d3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 Nf6 4.d3 g6).

4.g3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 b6).

3.Nf3 d5

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 g6).

4.e3 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 g6).

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

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

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

3.Nf3 d6

4.d4 Bg7 5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 d6 5.Nf3).

4.e3 e5 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 g6 5.Nf3).

4.e3 e5 5.c4 Be6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 g6).

4.e3 Bg7 5.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

4.e3 Bg7 5.c4 0–0 6.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

4.e4 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 d6 4.Nf3).

4.e4 Nbd7 5.Be2 Bg7 6.0–0 0–0 7.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 Nbd7 7.0–0).

3.Nf3 Bg7

4.c4 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.c4 c6 5.g3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 c6 5.c4).

4.c4 d5 5.c5 c6 6.e3 0–0 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.d4 d5 7.c5).

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

4.d3 b6 5.e4 Bb7 6.Be2 0–0 7.0–0 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 b6 7.0–0 Bb7).

4.d3 c6 5.e4 d6 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 c6).

4.d3 d5 5.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.d3).

4.d3 d6 5.Nbd2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.Nbd2 d6).

4.d3 d6 5.Nbd2 e5 6.g3 0–0 7.Bg2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 Nbd7 8.Nbd2).

4.d3 d6 5.e4 Bg4 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 Bg4).

4.d3 d6 5.g3 0–0 6.Bg2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.d3).

4.d4 0–0 5.e3 d6 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d4).

4.e3 b6 5.c4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 Nf6 4.Nf3 g6 5.c4 Bg7).

4.e3 b6 5.Be2 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 Nf6 4.Nf3 g6 5.Be2 Bg7).

4.e3 b6 5.Be2 Bb7 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 b6 6.0–0 Bb7).

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

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

4.e3 d5 5.Be2 0–0 6.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.d3 0–0 6.Be2).

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

4.g3 c6 5.Bg2 d5 6.0–0 0–0 7.d3 a5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d5 6.0–0 c6 7.d3 a5).

4.g3 d6 5.Bg2 c6 6.0–0 0–0 7.d3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 c6).

4.g3 d6 5.Bg2 e5 6.d3 0–0 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3).

4.c4 0–0

(--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0).

5.d3 Re8 6.e3 d6 7.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.d3 Re8).

5.d4 d6 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.g3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6).

5.e3 d6

(--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

6.Nc3 Nbd7 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Nbd7 7.Nbc3).

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

6.Be2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

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

4.c4 d6

5.Nc3 0–0 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Nc3).

5.d4 0–0 6.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 Bg4 6.e3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 Bg4).

5.e3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

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

5.g3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6).

4.d3 0–0

5.Nbd2 c6 6.g3 d5 7.Bg2 Bg4 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d5 6.0–0 c6 7.d3 Bg4 8.Nbd2).

5.e4 a6 6.Be2 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 a6).

5.e4 b6 6.Be2 Bb7 7.0–0 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 b6 7.0–0 Bb7).

5.e4 b6 6.Be2 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 b6).

5.e4 c6 6.Be2 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 c6).

5.e4 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6).

5.e4 d6 6.Be2 e5 7.0–0 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 Nbd7 7.0–0 e5).

5.g3 d6 6.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.Nbd2 d6 6.g3).

5.g3 d6 6.Bg2 e5 7.Nbd2 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 Nbd7 8.Nbd2).

4.e3 0–0

5.a3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.a3 0–0 5.Nf3).

5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3).

5.c4 b6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6).

5.c4 b6 6.Be2 Bb7 7.d4 d6 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).

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

5.c4 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

5.c4 d6 6.d4 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).

5.c4 d6 6.Be2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6).

5.c4 d6 6.Be2 c6 7.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 c6 7.Be2).

5.d4 b6 6.c4 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 b6).

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

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

5.d4 d6 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 d6 6.c4 a5 7.b5 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0–0 7.c4).

5.d4 d6 6.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d4 0–0 5.Nbd2 d6 6.e3).

5.Be2 b6 6.0–0 Bb7 7.d4 d6 8.c4 (--> 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).

5.Be2 b6 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2).

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

5.Be2 d6 6.0–0 b6 7.c4 Bb7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 b6 6.Be2 Bb7 7.0–0 d6).

5.Be2 d6 6.0–0 b6 7.d4 Bb7 8.Nbd2 Nbd7 9.c4 (--> 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 Nbd7 9.Nbd2).

5.Be2 d6 6.0–0 Nbd7 7.c4 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0 Nbd7).

5.Be2 d6 6.0–0 e5 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0).

4.e3 d6

5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3).

5.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6).

5.c4 0–0 6.Be2 c6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 c6 6.Be2 d6).

5.c4 e5 6.d4 ed4 7.Nd4 0–0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.Nd4).

5.c4 Bg4 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 Bg4).

5.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.d4 d6 5.Nf3).

5.d4 0–0 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4).

5.d4 0–0 6.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.d4).

5.d4 c6 6.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 c6).

5.Be2 e5 6.d3 0–0 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.0–0 e5 7.d3).

4.g3 0–0

(--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0).

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

5.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3).

5.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.g3).

5.d3 d6 6.Nbd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.Nbd2 d6 6.g3).

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

5.Bg2 c6 6.0–0 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 c6).

5.Bg2 c6 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 c6 6.Bg2).

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

5.Bg2 d6 6.0–0 Nbd7 7.d3 Re8 8.Nbd2 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 Nbd7 8.Nbd2 Re8).

5.Bg2 d6 6.0–0 e5 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5 7.0–0).

5.Bg2 Re8 6.0–0 d6 7.c4 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5 7.0–0 Re8).

3.f4 Bg7

4.e3 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4).

4.e3 d5 5.Nf3 e6 6.Be2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.f4 0–0 5.Nf3 d5 6.Be2 e6).

4.e4 (--> 1.b4 Nf6 2.Bb2 g6 3.e4 Bg7 4.f4).

3.g3 Bg7

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

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

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

4.Bg2 d6 5.d3 0–0 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.d3).

4.Bg2 d6 5.Nf3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6).

4.Bg2 d6 5.Nf3 0–0 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2).

4.Bg2 d6 5.Nf3 c6 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 c6).

4.Bg2 d6 5.Nf3 e5 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5).

4.Bg2 0–0

5.c4 d6 6.Nf3 e5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5).

5.d3 c6 6.Nf3 d5 7.Nbd2 Bg4 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d5 6.0–0 c6 7.d3 Bg4 8.Nbd2).

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

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

5.Nf3 c6 6.0–0 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 c6).

5.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6).

5.Nf3 d6 6.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2).

4.Bg2 c6

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

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

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

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

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

2.Bb2 Bg7??

3.b5?? Bb2 4.c3 Ba1 (4...d5 5.a4 Ba1 6.Qc1–+) 5.Qc2 (5.Na3 Bc3! 6.dc3 a6–+) 5...Nf6 (5...a6 6.a3–+) 6.Na3 (6.a3 a6 7.ba6 Na6–+) 6...0–0 (6...c6 7.Qb3–+) 7.e3 a6 8.Nf3 (8.Qb1 Bc3! 9.dc3 ab5 10.Nb5 c6–+) 8...ab5 9.Nb5 (9.Qb3 b4! 10.Nc2 bc3 11.dc3 Bc3 12.Qc3 d5–+) 9...c6 10.Nbd4 d6 (better 10...Qa5!? 11.Bc4 d5 12.Bb3–+) 11.Nb3 Bc3! 12.Qc3 (12.Qc3 Ra2 Combination; 12.dc3 Bf5 Combination) 12...Ra2 13.Be2 Ra3 (13...e5 14.Nc1 Nd5 15.Qb3–+) 14.Qb2 Ra8 15.0–0 Be6 16.Nbd4 (16.d4 Qb6 17.Nfd2 Ne4 18.Ne4 Qb3–+) 16...b5 (16...Bd5!? 17.Nc2–+) 17.Ne6 fe6 18.Nd4 (18.Qb3 Qc8–+) 18...e5 (better 18...Qd7 19.Qb3 Rf7 20.Nf3–+) 19.Ne6 Qe8 (better 19...Qc8 20.Nf8 Qf8 21.d3–+) 20.d3 (20.Nc7 Qf7 21.Na8 Na6–+) 20...Rf7 (20...Qf7 21.Nf8 Ra2 22.Qb4 Re2 23.Nh7 Kh7 24.Qh4 Kg7 25.Qb4–+) 21.Bf3?? (21.Nc7 Qd8 22.Na8–+) 21...Qd7 22.Qb3 d5 23.Ng5 Rf8 24.e4 (24.Ne4 e6 25.Nf6 Rf6–+) 24...Na6 (24...e6 25.Qb2 Qd6 26.Re1–+) 25.ed5 cd5 26.Re1 (26.Be2 Nc7–+) 26...Nc5 27.Qb1 (27.Qc3 Rfc8 28.Qd2 Qf5–+) 27...e4! 28.de4 de4 29.Ne4 (29.Be2 Qd2 30.Nh3 Nd5–+) 29...Nfe4 30.Be4 Ne4 31.Qe4 (31.Re4 Qd2 32.Qb3 Kg7–+) 31...Qf5 (31...Ra2!? 32.Qe3 Rff2 33.Qf2 Rf2 34.Kf2–+) 32.Qe3 (32.Qe2 Qf6–+) 32...Rae8 (32...Ra2!? 33.Rf1–+) 33.f3 Kg7 (33...e6 34.Qb6–+) 34.Kf2 (34.Qc3 Rf6–+) 34...b4 (34...e5 35.Kg1–+) 35.Qc1 (35.Qd4 e5 36.Qb4 e4 37.Qd4 Kg8 38.Qc4 Rf7–+) 35...e5 36.Qb2 Rf7 (better 36...Qf4!? 37.Kf1–+) 37.Qb4 Rfe7 38.Re4 Qf6 39.Qd2 h6 40.h3 Qh4 (better 40...Rb8–+) 41.Rh4+– e4 (41...g5 42.Re4 Kf6+–) 42.Qh6 Kf6 43.fe4 (43.Rf4 Ke6 44.Re4 Kd7 45.Qd2 Kc8 46.Qc3 Rc7 47.Re8 Kd7 48.Qe5 Rc2 49.Ke3 Rc3 50.Kd4 Rc2 51.Qe6 Kc7 52.Re7 Kb8 53.Qb3 Kc8 54.Qg8) 43...Ke5 (43...Re4 44.Re4 Re4 45.Qf8 Ke5 46.Qe8 Kd5 47.Qg6 Re6 48.Qd3 Kc5+–) 44.Qg5 Kd4 45.e5 Kc3 46.Qe3 Kc2 (46...Kb2 47.Rb4 Kc2 48.Qc5 Kd3 49.Rd4) 47.Re4 (47.Qc5 Kb3 48.Rb4 Ka2 49.Qa5) 47...Rf8 48.Kg3 Rd7 (48...Rc8 49.Qe2 Kc3 50.Qf3 Kb2 51.Rb4 Kc1 52.Qe3 Kc2 53.Qb3 Kd2 54.Rd4 Ke2 55.Qd3 Ke1 56.Re4) 49.Rc4 Kd1 (49...Kb2 50.Qc1 Kb3 51.Qc2 Ka3 52.Ra4) 50.e6 (50.Rc1) 50...Rd2 51.e7 (51.Qb3 Ke1 52.Re4 Re2 53.Qc3 Kd1 54.Rd4 Rd2 55.Qd2) 51...Rf1 (51...Rff2 52.Qb3 Rc2 53.Qb1 Kd2 54.Qc2 Ke1 55.e8Q Re2 56.Qee2) 52.e8Q (52.Qb3 Ke1 53.Rc1 Ke2 54.e8Q) 52...Rg1 (52...Rg2 53.Kg2 Rf2 54.Kf2 g5 55.Qd7) 53.Qf3 (53.Qg1) 53...Re2 54.Qfe2 (54.Qee2) 1–0. KLINGON09 (1765) – zajim66 (1695), lichess.org, 2019.

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

3.Bg7+– a5 4.ba5 Nf6 5.Bh8 +–.

3.Bg7+– b6 4.Bh8 Bb7 5.e3 Nc6 6.b5 Na5 7.Qg4 (7.Nf3 a6+–) 7...c6 8.Nf3 Qc7 9.Nc3 Nh6 10.Qh3 0–0–0 (10...Nf5+–) 11.Be5 f6 12.Bc7 (12...Kc7 13.Qh6+–) 1–0. Taulien,Hans_Juergen – Pieleck,Kerstin, remoteschach.de, 2002.

3.Bg7+– Nc6 4.Bh8 Nb4 5.Bc3 +–.

3.Bg7+– d5 4.Bh8 f6 5.Bg7 (better is 5.d4 Nh6 6.Qd2 Nf5+–) 5...e5 (5...Kf7 6.Bf6 Nf6 7.Nf3+–) 6.e4 (better is 6.Bh8 Kf7+–) 6...d4 (6...Kf7 7.Bh8 Ne7 8.Bf6 Kf6+–) 7.Bh8 Be6 8.Qf3 Qd7 9.c3 a6 10.h3 Qf7 11.a3 a5 12.cd4 ab4 (12...ed4 13.b5+–) 13.de5 b3 14.Qc3 Ne7 (14...f5 15.ef5 Qf5 16.Bb5 c6 17.Bd3+–) 15.ef6 Nc8 16.Nf3 Nc6 17.d4 Qd7 18.d5 Bd5 19.ed5 Qd5 20.Bc4 Qd7 21.f7 Ke7 22.Qf6 Kf8 23.Bg7 1–0. PassedPawn – boldeagle, ChessWorld.net, 2005.

3.Bg7+– e6 4.Bh8 f6 5.e4 Ne7 (5...Kf7 6.e5 d6 7.Nh3+–) 6.Bf6 Ng8 7.Bd8 (7.Bd8 Kd8 8.Nh3+–) 1–0. DEFFM – GuesrtTPVD, freechess.org, 2019.

3.Bg7+– f6

4.Bh8 b6 5.e3 e5 6.d4 ed4 7.ed4 d5 8.c4 Nh6 9.Qf3 Nd7 10.Qd5 c6 (10...Qe7 11.Ne2 Rb8 12.c5 bc5 13.dc5 Rb4 14.Nbc3+–) 11.Qc6 Bb7 (11...Qe7 12.Kd1 Rb8 13.Nd2+–) 12.Qb7 Rb8 13.Qe4 Kf8 14.c5 bc5 15.bc5 Qc7 16.Qh4 Re8 17.Kd1 Kg8 18.Bf6 Nf5 19.Bc4 Kf8 20.Qh7 Nf6 21.Qc7 Nh6 22.f3 g5 23.h4 (23…g4 24.Qf4+–) 1–0. Bonetti,Shane – rennick, ICC, 2002.

4.Bh8 Nc6 5.b5 Ne5 6.Nf3 Nf7 (6...Nf3 7.ef3 Nh6 8.Bc4+–) 7.Bg7 e6 (7...Nd6 8.c4! Kf7 9.c5+–) 8.e4 (8.Nc3 Qe7 9.b6 Nd6+–) 8...Qe7 9.h4 (9.e5 Ne5 10.Ne5 Qg7+–) 9...h5 (9...Nd8 10.Bf6! Nf6 11.e5+–) 10.c4 (10.e5 Ne5 11.Ne5 Qg7+–) 10...Ne5 (10...Nd8 11.Bf6! Qf6 12.e5+–) 11.Ne5 Qg7 12.Ng6! Qg6 13.Be2 (13.Nc3 f5 14.ef5 Qf5+–) 13...Qg2 (13...Qe4 14.Nc3 Qg2 15.Bh5 Kd8 16.Bf3+–) 14.Bf3 (better 14.Bh5 Kd8 15.Qf3+–) 14...Qg6 (14...Qg7+–) 15.Bh5 Ne7 16.Bg6 Ng6 17.Qh5 Kf7 18.Qh7 (18.Qh7 Ke8 19.Qg6 Ke7 20.Qg7 Kd6 21.Qf8 Ke5 22.Qc5 d5 23.Rg1 a6 24.Rg4 f5 25.d4 Kf6 26.Qf8) 1–0. DEFFM – TheMirage, freechess.org, 2018.

4.Bh8 Kf7 5.c3 Nh6 6.Qb3 d5 7.Bf6 ef6 8.e4 c6 (8...Be6 9.ed5 Qd5 10.Qd5 Bd5 11.c4+–) 9.ed5 cd5 10.Be2 Qd6 11.Na3 Bg4 12.Nb5 (12.Nf3 Nc6 13.0–0 Re8+–) 12...Qd7 13.a4 (13.Nf3 Kg7 14.a4 Nc6+–) 13...a6 14.Nd4 Nc6 15.Ngf3 (15.Nc6 bc6 16.h3 Be2 17.Ne2 Re8+–) 15...Re8 16.Kf1 Nd4 17.Nd4 Be2 18.Ne2 Qe6 (18...Nf5 19.h4+–) 19.Re1 (better 19.Nf4!? Qe7+–) 19...Nf5 0–1. Madsen,John (1735) – Kepinski,Janusz (1605), FICGS, 2008.

4.Bh8 Kf7 5.e4 Nh6 6.Bf6! ef6 (6...ef6 7.Bc4 Decoy; 6...Kf6 7.Qf3 Decoy) 7.d4 (7.Nc3!? Kg7+–) 7...d5 8.Nc3 c6 (8...de4 9.Bc4 Kg7 10.Nge2+–) 9.Bd3 Qe7 (9...de4 10.Be4 Bf5 11.Qd2+–) 10.Qe2 Qb4 11.Qd2 Kg7 12.Rb1 Qd4 13.Nf3 Qc5 14.ed5 cd5 15.0–0 Nc6 16.Rb5 Qf8 17.Nd5 a6 18.Rb2 Bf5 (18...Qf7 19.Nb6 Rb8+–) 19.Bf5 Nf5 20.Rb7 Kg8 21.Rb6 (21.Qc3 Nce7 22.Nf6 Kh8 23.Nd5 Qg7 24.Qg7 Kg7 25.Ne7 Ne7 26.Re7 Kf8 27.Rh7 Re8+–) 21...Qc5 (21...Rc8+–) 22.Rb7 Rd8?? (22...Qf8 23.Qc3 Ne5 24.Ne5 fe5 25.Qe5 Qd6 26.Ne7 Qe7 27.Qd5 Kg7 28.Re7 Ne7 29.Qa8 Nf5+–) 23.Nf6+– Kf8 24.Nh7 Kg8 25.Nf6 Kh8 26.Rh7 1–0. rcm06 (1905) – ollie, gameknot.com, 2012.

4.Bh8 Nh6 5.e4 Kf7 (5...Kf8 6.Nc3+–) 6.Bf6! ef6 (6...ef6 7.Bc4; 6...Kf6 7.Qf3) 7.Bc4 Ke8 (7...Kg7 8.Nc3+–) 8.Nf3 d6 (8...Qe7 9.Nc3+–) 9.d4 (9.0–0 Bg4+–) 9...Qe7 (9...Kf8 10.0–0+–) 10.Qe2 (10.Qd2 Nf7 11.Nc3 Kf8+–) 1–0. dusterstar – jordan2delta, internet, 2006.

4.Bh8 Nh6 5.Bg7 Nf5 6.Bf6! ef6 7.e4 Nd6 8.Nc3 Nc6 (8...b6 9.Nf3 Bb7 10.Bd3+–) 9.a3 (9.b5 Na5+–) 9...Qe7 10.d3 b6 11.Nd5 Qd8 12.c3 Bb7 13.Nf3 Ne7 (13...Ne5 14.Be2+–) 14.Nf6 Kf7 15.Nh7 Qh8 16.Nhg5 Ke8 17.Be2 (better 17.Qc1 Kf8+–) 17...Qc3 18.Kf1 c6 (18...Bc6 19.h4 a5 20.Rc1+–) 19.Qc1 (19.h4 Qb2+–) 19...Qg7 (19...Qc1 20.Rc1 a5 21.h4 ab4 22.ab4+–) 20.h4 (20.d4 Nf7 21.Qf4 c5+–) 20...Kd8 (20...Nf7 21.h5 gh5 22.Rh5 Ng5 23.Ng5+–) 21.e5 (21.h5 gh5 22.Rh5 Ng6+–) 21...Ndf5 (21...Nf7 22.Nd4 Kc8 23.h5 gh5 24.Nf7 Qf7 25.Rh5+–) 22.e6 (22.h5 Kc8+–) 22...d6 (22...Kc7 23.d4! d6 24.Qd2+–) 23.Nf7 Kc7 24.Ra2 (better 24.g4 Qf6 25.gf5 Nf5+–) 24...Bc8 (24...Qf6 25.N7g5+–) 25.N7g5 Qg8 26.Rc2 Be6 27.Ne6 (27.g4!? Ng7 28.Nd4 Bd5+–) 27...Qe6 28.Ng5 (28.g4!? Ng7+–) 28...Qd5 29.Nf3 Rh8?? (29...Qe6 30.g4 Ng7+–) 30.Qb2 g5 (30...Re8+–) 31.Qh8 Qb3 32.Qc3 (better 32.Rc3 Qg8 33.Qg8 Ng8 34.hg5 Nfe7+–) 32...Qc3 33.Rc3 gh4 34.Nh4 Nd4 35.Nf3 Nb5 36.Rb3 (better 36.Rc1 a5 37.d4 Na3 38.ba5 ba5+–) 36...Nf5 37.a4 Nbd4 38.Rh7 Kb8 39.Nd4 Nd4 40.Rc3 c5 41.bc5 dc5 (41...bc5 42.Rc1 Kc8 43.Bg4 Kd8 44.Rb1 Nc6 45.Rbb7 Ne7 46.Rh8 Ng8 47.Rg8) 42.g4 (42.Bg4 Ka8 43.Rc1 Nf5 44.Bf5 a5 45.Re1 b5 46.Re8) 42...Nc6 43.g5 Ne5 44.f4 (44.f4 Ng6 45.d4 Nf8 46.g6 Kc8 47.Bg4 Kb8 48.g7 Nd7 49.g8Q Kb7 50.Rd7 Ka6 51.Qc4 Ka5 52.Ra7) 1–0. mic – pvhameren, net–chess.com, 2019.

4.Bh8 Nh6 5.Bg7 Nf5 6.Bh8 +–.

3.Bg7+– Nf6

4.Bh8 d5 5.Nf3 Bg4+–.

4.Bh8 d5 5.Bf6 ef6 6.d4 Nc6 (6...Qd6 7.Nc3+–) 7.c3 Be6 8.e3 a6 (8...Kf8 9.Nd2+–) 9.Nf3 Qd6 1–0. dbinc007 – norwegian_warior (1615), gameknot.com, 2018.

4.Bh8 d5 5.Bf6 ef6 6.e3 Nc6 (6...Be6 7.Nf3+–) 7.b5 Bf5 (7...Ne7 8.Be2+–) 8.bc6 bc6 9.Nf3 Qe7 10.Nd4 (better is 10.c4 Be6+–) 10...Qe5 11.Nc6 (better is 11.f4 Qe7 12.Nf5 gf5 13.Qh5+–) 11...Qa1 12.Bb5 Kf8 13.Nd4 Qa2 14.0–0 Rb8 15.Nf5 gf5 16.Nc3 Qa5 17.Qe2 a6 18.Bd3 Re8 19.Bf5 d4 20.Qf3 dc3 21.dc3 Qc3 22.Qh5 Qe5 23.Qh7 Ke7 24.Qh3 Rd8 25.Re1 Rd2 26.f4 Qd6 27.Qf3 Rd1 28.Rd1 Qc5 29.Rd7 Kf8 30.h3 c6 31.Kh2 Qc3 32.Qh5 Qc4 (33.Qh8#; 32...Kg7 33.Qf7 Kh8 34.Qg7#) 1–0. Onkel_Luis – megaflower, ICC, 2003.

4.Bh8 Kf8 5.Nc3 +–.

4.Bh8 Kf8 5.e3 Kg8 6.Bf6 ef6 7.Qf3 f5 8.Nc3 Nc6 9.b5 Nb4 (9...Ne5 10.Qg3 d6 11.Nf3+–) 10.Rc1 d6 (10...c6 11.a3 Nd5 12.Nd5 cd5 13.Qd5+–) 11.a3 f6 12.ab4 (12...Kg7 13.Bc4+–) 1–0. Taulien,Hans_Juergen – Wosu,Jim, remoteschach.de, 2003.

2.b5 Bg7

3.a4?? Ba1–+ 4.c3 Nf6 (4...a6!? 5.ba6 Ra6 6.Qb3–+) 5.Na3 (5.Qb3 a6 6.ba6 Na6–+) 5...0–0 (better 5...a6 6.Qc2–+) 6.Nc4 (6.Nc2 a6 7.ba6 Bc3 8.ab7 Bd2 9.Bd2 Bb7 10.Na3–+) 6...d5 (better 6...a6 7.b6 cb6 8.Ne3–+) 7.Ba3 (7.Ne3 a6 8.b6 Ne4–+) 7...dc4 8.Qa1 Nbd7 (8...a6 9.Qb2–+) 9.e3 (9.Qa2 a6 10.Qc4 Nb6–+) 9...e5 (better 9...a6 10.Bc4 Nb6 11.Qa2–+) 10.Bc4 (10.Bf8 Nf8 11.Bc4 e4–+) 10...Re8 (10...Nb6 11.Bb3 Ne4 12.Nf3–+) 11.Nf3 (11.Qa2 Kg7–+) 11...c6 (better 11...e4 12.Nd4–+) 12.bc6 (12.Qa2 Kg7 13.Bf7 Rh8–+) 12...bc6 (better 12...Nb6 13.Bb5 Re6–+) 13.Bb3? (13.Qa2 Kg7 14.Bf7–+) 13...Rb8 (13...e4!? 14.Nd4 c5 15.Qa2–+) 14.Qa2 c5 (better 14...Nd5–+) 15.Bf7 Kf8 (15...Kg7 16.Be8 Qe8 17.0–0–+) 16.Be8–/+ Qe8 17.Bc5?? (better 17.d3–/+) 17...Nc5–+ 18.Qa3 (18.0–0 e4 19.Qa3 Qe7–+) 18...Qe7 (better 18...Rb1 19.Ke2 Ba6 20.c4 Bc4 21.d3 Bd3 22.Qd3 Rb2 23.Qd2 Rd2 24.Nd2 Qa4 25.Rc1 Qa6 26.Kd1–+) 19.0–0 Kg7 (better 19...Ba6 20.Ra1 Nd3 21.Qe7 Ke7–+) 20.d4 ed4 (better 20...Nfe4!? 21.dc5 Bg4–+ (21...Nc5?! 22.Nd4 Bd7 23.a5–+; 21...Qc5?! 22.Qc5 Nc5 23.Ne5–/+)) 21.cd4–/+ Rb3 (21...Nfe4 22.Rc1–/+) 22.Qc5 Qc5 23.dc5 Rc3 24.Nd4 Rc5 25.Rd1 (25.Ra1 Bd7–/+) 25...Rc4 (25...Ra5 26.Ra1 Bd7 27.f3–+) 26.Nb5 (better 26.Ra1!?–/+) 26...Ra4–+ 27.Nd6 (27.f3 a5–+) 27...Be6 28.h3 Ra2 29.f4 (29.e4 a5–+) 29...a5 (better 29...Nd5 30.Re1 a5–+) 30.f5 (30.e4–+) 30...gf5 31.e4 (31.Kf1 Kg6–+) 31...fe4 32.Rf1 (32.Re1 Bd5–+) 32...e3 33.Rf6 (33.Re1 Nd5 34.Kf1–+) 33...Kf6 34.Ne4 Kg7 35.Ng3 Bd5 (better 35...Kg6 36.h4–+) 36.Kf1 (36.Nf5 Kg6 37.Ne3 Bg2 38.Kh2–+) 36...Bg2 37.Ke1 Kf6 38.h4 Ke5 (38...Bf3 39.Ne4 Ke5 40.Nc3 Ra1 41.Nd1 Rd1) 39.h5 Kd4 (39...Bf3 40.Ne2 Ra1 41.Nc1 Rc1) 40.Nf5 (40.Ne2 Kc4 41.Kd1 Bf3 42.Kc1 Re2 43.h6 Kb3 44.Kd1 Rd2 45.Ke1 Rd1) 40...Kd3 41.Ne3 Ke3 42.h6 (42.Kd1 Be4 43.Kc1 a4 44.h6 a3 45.Kd1 Ra1) 42…Ra1 0–1. afsharian – estevaoluiz (1840), lichess.org, 2018.

3.c3 b6 4.Bb2 Bb7 (4...Nf6 5.e3=+) 5.a4 d6 (5...Nf6 6.e3=) 6.f3 (6.Nf3 Nf6=) 6...Nd7 (6...Nf6 7.e4=+) 7.e4= Ngf6 8.d4 e5 (8...c5 9.Bd3=) 9.d5 (9.a5 ba5 10.Nd2 d5 11.de5 Ne5=) 9...0–0 10.Bd3 Ne8 (10...a6 11.Ne2=) 11.Ne2 f5 12.0–0 fe4 13.Qc2?? (better 13.fe4 Rf1 14.Qf1=) 13...ed3–+ 14.Qd3 e4! 15.fe4 (15.Qe4 Ndf6 Double attack (15...Ndf6 Decoy); 15.fe4 Rf1 Combination) 15...Rf1 16.Kf1 Qf6 (16...Nc5 17.Qf3–+) 17.Qf3 (17.Kg1 a6–+) 17...Ne5 18.Qf6 Bf6 (18...Nf6 19.Ng3–+) 19.c4? (19.Nd2 Nd3 20.Ba3 a6–+) 19...Ng7 (better 19...Nc4!? 20.Bf6 Nf6 21.Ng3–+) 20.Be5 (20.Nd2 a6–+) 20...Be5 21.Ra2 Rf8 (21...Nh5 22.g3–+) 22.Kg1 Bd4?? (better 22...a5–+) 23.Kh1?? (better 23.Nd4 a5 24.Nc3+–) 23...Bc5 (23...Rf1 24.Ng1 Rg1) 24.Ng3 (24.Nd2 Rf2 25.Ng3 Nh5–+) 24...Nh5 25.Nd2 (25.Rb2 Bc8 26.Rb3 Ng3 27.hg3 Rf1 28.Kh2 Re1–+) 25...Ng3 26.hg3 Rf1 (26...Rf2 27.Kh2–+) 27.Kh2?? (better 27.Nf1 a5 28.g4+–) 27...Rd1 (better 27...Rf2 28.g4–+) 28.Nf1 (28.Nb3–+) 28...Rf1 29.Kh3 (29.Rc2 Re1–+) 29...Rf8 (better 29...Rh1 30.Kg4 Bc8 31.Kf3 Rf1 32.Ke2 Rf2 33.Kd3 Ra2 34.Kc3–+) 30.Kg4 (30.g4 Bc8 31.Kg3 Bd4–+) 30...Bc8 31.Kh4 h6 (31...Bf2 32.Rf2 Rf2 33.g4 Rg2 34.Kh3 Rg4 35.Kh2–+) 32.g4 Bf2 (better 32...g5!? 33.Kg3–+) 33.Kh3 Bd4 34.Kh2 (34.a5 ba5 35.Ra5 Rf4–+) 34...Rf2 (better 34...Be5 35.Kg1 Bg4–+) 35.Kh3 (35.Rf2 Bf2 36.g5–+) 35...Ra2 36.Kh2 (36.Kg3 Ra3 37.Kh2 Be5 38.g3 Ra2 39.Kg1 Bg4 40.a5 Bh3 41.a6 Bg3 42.e5 Ra1) 36...Ra1 (36...Be5 37.Kh3 g5 38.g3 h5 39.c5 Bg4) 37.Kh3 (37.a5 Bg1 38.Kh1 Bg4 39.ab6 Bd4 40.Kh2 Be5 41.g3 Bf3 42.ba7 Rh1) 37…Rh1 (37...Rh1 38.Kg3 Rf1 39.Kh2 Bg4 40.Kg3 Be2 41.Kh2 Be5 42.g3 Bf3 43.c5 Rh1; 37...Be5 38.g3 Ra2 39.a5 h5 40.Kh4 Bf6 41.g5 Rh2) 0–1. afsharian – HarukaMirai13579, lichess.org, 2019.

3.c3 e6 4.Bb2 Ne7 5.d4 0–0 (5...d5 6.Nf3=) 6.e4 f6 (better 6...d5=) 7.e5 (better 7.Nf3!?=) 7...fe5–/+ 8.de5 Be5 9.Nf3 Bd6 (9...Bf6 10.Be2–/+) 10.Bd3 c6 (10...a6 11.c4 Bb4 12.Nbd2 ab5 13.cb5=+) 11.a4 (11.Bg6 A) worse 11...cb5 12.Bh7 (12.Qd6?! Ng6 13.Bc1 Nc6=+) 12...Kh7 13.Qd6+–; B) 11...Ng6 12.Qd6 cb5=) 11...cb5 (11...Bf4 12.h4=+) 12.ab5 b6?? (12...Bc5 13.Nbd2=+) 13.0–0 (better 13.Be4+–) 13...Bc5 (13...Bb7 14.Nbd2=+) 14.Nbd2 (14.c4 Bb7 15.Nbd2 a6=) 14...d6 (14...Bb7 15.Qe2=) 15.Bc4 (15.Ne4 a6=) 15...Kg7 (15...a6 16.Re1=) 16.Bb3 (16.Qe2 d5 17.Bd3 Bd6+–) 16...Kg8 (16...e5!?=+) 17.c4 (17.Re1 d5+=) 17…d5 0–1. afsharian – Sudharshanv, lichess.org, 2020.

3.c3 Nf6 4.a4 0–0 5.e3 a6 6.Qb3 (6.Nf3 d5=+) 6...ab5 7.Qb5 (7.Bb5 Nc6=+) 7...Nc6 8.Bb2 b6 9.Qb3 Ba6 (9...d5 10.Nf3–/+) 10.c4 (10.Ba6 Ra6 11.d3 Qa8=+) 10...e6 (10...d5 11.cd5 Na5 12.Qc2 Bf1 13.Kf1 Qd5 14.Nf3–/+ (14.Qc7?? Qd3 15.Ne2 Nd5–+)) 11.Bf6 (11.Nf3 d5=+) 11...Bf6 12.Ra2 b5?? (12...Re8–/+) 13.Nc3?? (better 13.ab5 Qb8 14.Qd1+–) 13...ba4 (better 13...bc4 14.Qa3 Ne5–+) 14.Ra4=+ d5 (better 14...Qe7=+) 15.Ra6?? (better 15.d4=) 15...Ra6–+ 16.cd5 Ra1 (16...Rb6 17.Qd1 Bc3 18.dc3 Qd5 19.Qd5 ed5 20.f4–+) 17.Ke2 Ne5 (17...ed5 18.Nd5 Bg7 19.Nf3–+) 18.f3 (18.d4 Ng4 19.h3 Nh6–/+) 18...Ra6 (18...Qa8 19.Kf2 Rb8 20.Qc2–+) 19.g3 (19.d4 Rb6 20.Qa4 Nd7–/+) 19...Rd6 (19...Rb6 20.Qa2–+) 20.Bg2 (20.d4!? Rb6 21.Qa4–/+) 20...Nd7 (20...ed5 21.f4 Nc4 22.Nf3–+) 21.f4 Nc5 (21...Bc3!? 22.Qc3 ed5 23.Nf3–+) 22.Qc2 Nb7 (22...Bc3 23.Qc3 Na4–/+ (worse 23...Rd5 24.Bd5 Qd5 25.Nf3=)) 23.d4?? (better 23.de6 Bc3 24.Qc3=) 23...c6?? (23...ed5 24.Nd5 Rd5 25.Qb3–+) 24.Na4?? (better 24.dc6 Na5 25.Nb5 Rc6 26.Bc6+–) 24...cd5–+ 25.Nc5 (25.Nf3 Qd7–+) 25...Qa5 (better 25...Qc7!? 26.Nf3–+) 26.Nb7 Qa6 27.Kd2 (27.Kf2 Qb7 28.Ne2 Rb6–+) 27...Qb7 28.Ne2 (28.Ke1 Rc8 29.Qd3 Rb6–+) 28...Rb8 (better 28...Rc8!? 29.Qd3 Qb4 30.Nc3 Qb2 31.Qc2 Qc2 32.Kc2–+) 29.Nc3 (29.Rc1–+) 29...Qb4 (better 29...Rb6 30.Nd1 Rc8–+) 30.Bf1?? (better 30.Rb1 Qb1 31.Nb1=) 30…e5! (30...e5 31.fe5 Rc6–+) 0–1. afsharian – bretasker, lichess.org, 2018.

3.c4?? Ba1–+ 4.a4 (4.e4 a6–+) 4...Nf6 (4...a6 5.Nc3–+) 5.Qb3 c6 6.Nc3 Bc3 (6...cb5 7.cb5 d5 8.Nf3–+) 7.dc3 (7.Qc3 d5–+) 7...cb5 (7...d6 8.Nf3–+) 8.ab5 (8.cb5 d5–+) 8...d6 9.e3 Be6 (9...Nbd7 10.Ba3–+) 10.Nf3 Nbd7 11.Nd4 Nc5 12.Ne6 (12.Qc2 a6–+) 12...Nb3 13.Nd8 Rd8 (better 13...Kd8 14.Ba3 a6–+) 14.Bd2 (14.Ba3 a6–+) 14...Nd2 (better 14...Ne4 15.Bd3 Ned2 16.Ke2–+) 15.Kd2 Ne4 16.Kd3 (16.Ke1–+) 16...Nf2 17.Ke2 Nh1 18.g3 Rc8 (18...a5 19.ba6 ba6 20.Bg2 Ng3 21.hg3–+) 19.Kf3 (19.Bg2 Ng3! 20.hg3 Rc4 21.Bb7 f5–+) 19...Ng3! 20.hg3 (20.Kg3 f5 Combination; 20.hg3 f5 Combination) 20...e6 (20...h5 21.Bd3–+) 21.e4 (21.Ke4 a5–+) 21...Ke7 22.g4 (22.Be2 a5 23.ba6 ba6–+) 22...Rc5 23.Bd3 Rhc8 (23...a5 24.ba6 ba6 25.Kf4–+) 24.Ke3 Rc4 25.Bc4 Rc4 26.Kd3 Rc7 27.c4 a6 (27...Rc4 28.e5 Rg4 29.ed6 Kd6 30.Ke2–+) 28.ba6 ba6 29.Kc3 Rb7 (better 29...Rc4! 30.Kd3 Re4 31.g5–+) 30.Kc2 a5 31.Kd3 a4 32.Kd4 a3 33.c5 dc5 34.Kc5 (34.Kc4 a2 35.Kc5 a1Q 36.Kc4 Qa3 37.Kd4 Rb4 38.Ke5 Qg3) 34...a2 35.Kc6 (35.g5 a1Q 36.Kc4 Qa3 37.Kd4 Rb4 38.Ke5 Qg3) 35...Rb1 (35...Rb3 36.g5 a1Q 37.Kc5 Qc3) 36.Kc7 (36.Kc5 a1Q 37.Kc4 Qa3 38.Kd4 Rb4 39.Ke5 Qg3) 36...a1Q 37.Kc8 (37.g5 Qc3) 37...Qd4 (37...Qc3) 38.Kc7 (38.g5 Qc3) 38...Rc1 (38...Qc3) 39.Kb7 (39.Kb8 Qb6 40.Ka8 Ra1) 39...Qb2 40.Ka7 (40.Ka6 Ra1) 40..Ra1 0–1. afsharian – ramendra (1695), lichess.org, 2018.

3.c4?? Nf6 4.Nc3 (4.d4 0–0=) 4...e6 (4...d6 5.d4=+) 5.Bb2 (5.d4 d5=) 5...0–0 6.a4 (6.d4 a6=) 6...d6 (6...d5 7.e3=) 7.e3 (7.Nf3 a6=) 7...Nbd7 (7...e5 8.Be2=) 8.Qb3 (8.Nf3 e5=) 8...d5 (8...e5 9.e4=+) 9.cd5= ed5 (9...Nd5!? 10.Nd5 Nc5+=) 10.Nd5+= Nc5 (10...c5 11.bc6 bc6 12.Nf6 Nf6 13.Rc1+–) 11.Nf6+– Bf6 12.Qc2 (12.Bf6 Nb3 13.Bd8 Na1 14.Bc7 Be6+=) 12...Bb2 (12...Bf5 13.Bf6 Qf6 14.Qc3 Qc3 15.dc3+=) 13.Qb2 Re8 (13...Bf5 14.d4 Ne4 15.Nf3+–) 14.Nf3 Nd3 (14...Bg4 15.Ne5 Be6 16.d4+–) 15.Bd3 Qd3 16.Qb1 (16.Rc1 Bg4+–) 16...Qb1 (16...Qd6 17.0–0+–) 17.Rb1 Bf5 18.Rc1 a6 19.0–0 (19.Nd4 ab5 20.Nf5 gf5 21.ab5 Ra2+–) 19...ab5 20.ab5 (20.Rc7?! ba4 21.Ng5 b5 22.Nf7 Rec8 23.Nh6 Kh8=) 20...Ra5 (20...Rec8 21.Rc3+–) 21.Rc7+– Bd3 (better 21...Rb5 22.Nd4 Rb2+–) 22.Rb1?? (better 22.Rb7 Bf1 23.Kf1+–) 22...Bb1–+ 23.Rb7 (23.Nd4–+) 23...Ra1 24.g3 (24.h3 Be4 25.Kh2 Bb7–+) 24...Be4 25.Kg2 Bb7 26.Kh3 (26.g4 Ra2–+) 26...Rd8 (26...Bf3 27.g4 Rg1 28.g5 Re5 29.b6 Reg5 30.d4 Rh5) 27.Nh4 (27.Nd4–+) 27...Rd2 28.Ng2 Rf2 29.Nf4 Rf4! 30.ef4 (30.ef4 Rb1 Combination; 30.gf4 Bc8 Decoy) 30...Ra4 31.Kg4 (31.Kh4 Rb4 32.b6 h6 33.Kg4 f5 34.Kh4 g5 35.Kh5 Kh7 36.fg5 Bf3 37.g4 Rg4 38.gh6 Bd5 39.b7 Bf7) 31...g5! 32.h4 (32.Kg5 Kg7 Combination) 32...gf4 33.gf4 f6 34.Kf5 (34.b6 h5! 35.Kf5 Kg7–+) 34...Bd5 (better 34...Kf7 35.Kg4–+) 35.Kf6 Ra5 36.Ke5 (36.b6 Rb5–+) 36...Rb5 37.Kd6 (37.Kd4 Be6–+) 37...Bc4 38.f5 Rb1 (38...Rf5 39.Ke7–+) 39.Kc5 (39.Ke5 Rh1–+) 39...Rf1 (better 39...Bd3 40.f6–+) 40.Kc4 Rf5 41.Kd4 Rh5 42.Ke4 Rh4 43.Kf3 h6 (43...h5 44.Kg3 Rc4 45.Kg2–+) 44.Kg3 h5 (better 44...Rc4–+) 45.Kh4= Kg7 46.Kh5 ½–½. afsharian – Erishah, lichess.org, 2018.

3.d4 d5 4.Bb2 Nf6 5.f3 (5.e3 a6=+) 5...c6 (5...a6 6.e3–/+) 6.a4 Bf5 (6...0–0 7.Nd2=+) 7.Nd2 (7.e3 0–0=+) 7...Qd6 8.Ba3 (8.e3 Qb4 9.Ra2 0–0=+) 8...Qf4–/+ 9.g3? (9.e4 de4 10.Ne2 Qc7–/+) 9...Qc7?? (better is 9...Qd4 10.Ra2 h6–+) 10.Bg2 (10.g4 Bc8 11.e3 g5=+) 10...e5 (10...Qa5 11.g4 Bd7 12.g5–/+) 11.e4 de4 (11...Be6 12.Ne2 de4 13.de5 (< 13.fe4 Ng4–/+) 13...Qe5 A) 14.fe4? Ng4 (14...cb5?! 15.Rb1 a6 16.Bb2=) 15.0–0 Ne3–+; B) 14.f4=+) 12.fe4 (12.Nc4!? ef3 13.Nf3+/–) 12...Bg4 (12...Be6 13.Qe2 ed4 14.e5=+) 13.Ngf3 Nbd7 14.0–0 ed4 15.Qe1 c5 16.e5 Bf3?? (better is 16...Nd5 17.Nd4 Ne7= (< 17...cd4 18.Bd6 Qc3 19.Bd5 Qe3 20.Qe3 de3 21.Nc4+/–)) 17.ef6+– (17.Nf3?! Ng4 18.e6 0–0 19.ed7 Ne3+/–) 17...Kf8 (17...Qe5 18.Qe5 Ne5 19.fg7+–) 18.fg7 (better is 18.Qe7 Kg8 19.fg7 Kg7 20.Rf3 Raf8+–) 18...Kg7 19.Nf3 Rad8 (19...Rae8 20.Qd1+–) 20.Ng5 Rhe8 (20...Nf6 21.Qf2 Rd6+–) 21.Rf7 Kh6 22.Qd2 Kh5 23.Bf3 Kh6 24.Ne6 (24.Rh7) 24...g5 25.Qg5 1–0. MasterofDisaster – jackflanders, Caissa's Web, 2004.

3.d4 e6 4.Bb2 Ne7 5.e3 d5 6.c4 b6 (6...0–0 7.Nf3=) 7.a4 (7.Nf3 a6=) 7...Bb7 8.Nf3 Nd7 (8...c5 9.Ra2=) 9.Ne5 (9.a5 ba5 10.Bc3 a6=) 9...Ne5= 10.de5 dc4 (10...c5=) 11.Bc4 (11.Na3!?=) 11...Bg2 12.Rg1 Bb7 13.Qd8 Rd8 14.Bd4 (14.Nd2 h6=+) 14...0–0 (better 14...c5 15.Bb2 Nf5–/+) 15.Nc3 (15.a5 c5 16.Bb2 Rd7–/+) 15...Nf5 (better 15...c5!? 16.bc6 Nc6–+) 16.0–0–0–/+ Bf3 17.Rd2? (17.Rd3 Rc8–/+) 17...Bh6?? (17...Nd4 18.Rd4 Be5 19.Rd8 Rd8 20.Be2–+) 18.Rg3? (18.Kb2 Nd4 19.Rd4 Rd4 20.ed4 Bf4–/+) 18...Bb7?? (18...Nd4 19.Kb2 c5 20.Rd3–+) 19.Rg1? (better 19.Rg4–/+) 19...Nd4–+ 20.Rd4 (20.Rgd1 c5 21.f4–+) 20...Rd4 21.Kc2 (21.Bf1–+) 21...Rc4 22.Kb3 (22.f4 c6 23.Kb3 cb5 24.Nb5 Re4–+) 22...Rh4 23.Rg2 Rd8 (better 23...Bg2 24.h3–+) 24.Rg1 Bd5 (better 24...Rh2 25.Rf1–+) 25.Nd5 Rd5 26.Rc1 Bf8 27.Rc7 Rb4 28.Kc3 Ra4 29.e4 Rb5 30.Rc8 Kg7 (30...Ra3 31.Kd2–+) 31.Rc7 Re5 32.Kd3 Rh5 (better 32...Bc5 33.f3–+) 33.f4 Bc5 (33...Rh3 34.Kc2 Rh2 35.Kd3 Ra3 36.Rc3 Rh3 37.Kd2 Bb4 38.Kc1 Rac3 39.Kb1 Rh1 40.Kb2 Rh2 41.Kb1 Ba3 42.e5 Rc1) 34.Rc5 bc5 35.e5 Rf4 (35...Rh2 36.Kc3 a6 37.Kb3 Rf4 38.Kc3 Rf3 39.Kc4 Rc2) 36.Ke3–+ Ra4 37.Kd3 (37.Kf2 Rh2 38.Kg3 Rd2 39.Kf3 Ra3 40.Kf4 Rd4 41.Kg5 h6) 37...Rh3 38.Kc2 (38.Kd2 Ra2 39.Kc1 Rhh2 40.Kb1 Rae2 41.Kc1 Rh1) 38...Ra2 39.Kb1 (39.Kd1 Rhh2 40.Kc1 Rh1) 39...Rf2 40.Kc1 Rhh2 41.Kd1 Rh1 0–1. afsharian (1695) – achavnd (1635), lichess.org, 2018.

3.d4 f6 4.e3 (4.e4 d6+=) 4...Nh6 (4...e5 5.de5 fe5 6.e4=) 5.Bb2 (5.Nf3!?+=) 5...Nf7 6.a4 0–0 7.c4 c6 (7...d6 8.Nf3+=) 8.Nf3+= d5 (8...e5 9.Nc3=) 9.Be2 (9.Nc3 Bg4+=) 9...dc4 (9...e5 10.bc6 bc6 11.Nc3=) 10.Bc4 cb5 11.ab5 Re8 (11...Kh8 12.0–0+=) 12.Nbd2 e5? (better 12...e6+–) 13.Qb3+– ed4?? (better 13...Qe7 14.Ba3 Qc7+–) 14.Bf7 Kf8 (14...Kh8 15.Be8 Qe8 16.Bd4+–) 15.Be8 Qe8 (15...Ke8 16.Qg8 Bf8 17.Ba3+–) 16.Nd4 (better 16.Ba3 Qe7 17.Be7 Ke7+–) 16...f5 (16...Bh8 17.Nc4 Be6 18.Qb4 Kg8 19.Nb6+–) 17.0–0 (17.Ba3 Qe7 18.Ne6 Ke8 19.Nc7 Kf8+–) 17...Nd7 (17...Qf7 18.Qc4 Bd7+–) 18.Ne6 (better 18.Ba3 Qe7 19.Ne6 Kg8 20.Be7 Kh8+–) 18...Kg8 (18...Qe6 19.Qe6 Bb2 20.Ra2+–) 19.Ng7 Kh8 20.Ne8 (20.Ne8 Ne5 21.Be5) 1–0. BeepBeepImAJeep (2605) – nevrTry (1720), lichess.org, 2017.

3.c3 a6

4.Na3 Nf6 5.Qc2 0–0 6.Rb1 d5 7.e3 Ne4 8.f3 Nc5 9.d4 (9.ba6!? Nba6 10.Bb5–/+) 9...Bf5–/+ 10.Qd2 (better is 10.e4!? de4 11.g4 Nd3 12.Kd1–+) 10...Bb1–+ 11.dc5 Bf5 12.Ne2 (12.c4 Be6 13.b6 cb6 14.cb6 dc4 15.Bc4 Qb6 16.Be6 Qe6–+) 12...e5 13.Ng3 Be6 14.c4 dc4 15.Qc2 (15.Qb4 c3!–+) 15...ab5 16.Nb5 Nc6 (16...c6!? 17.Nd6 b5 18.Qd2–+) 17.Bc4 Nb4 18.Qb3 Bc4 19.Qc4 Nd3 20.Ke2 e4! 21.Ne4 (21.Qe4 Nc1 Double attack (21...Ra2 Deflection); 21.fe4 Nc1 Double attack; 21.Ne4 Nc1 Double attack) 21...Ne5 22.Qb3 Ra2 (22...Qe7–+) 23.Nd2? (better is 23.Qa2!? Qd3 24.Kf2 Qb5 25.Rd1+=) 23...Re8 (23...Ra1 24.Ne4–+) 24.Nc7? (better is 24.Qa2 Qd3 25.Kd1 Qb5 26.Qb3 Qc5 27.Bb2–+) 24...Rd2! (24...Qc7?! 25.Qa2 Qc5 26.Qb3–/+) 25.Bd2 Qc7 26.Rc1 Nc6 27.g3 Nd4 (27...Nd4 28.Kf2 Nb3–+) 0–1. Garcia Sanchez Navarro,M – Sanchez Millan,E (2015), Madrid ESP, 2nd Gonzalez Mem, 2011.

4.ba6 Ra6 5.e3 b5 (5...Ra7!?=+) 6.Bb5+= Rb6 7.Bc4 Rc6 (7...d5 8.Be2=) 8.Bb3 d5 (8...Nf6 9.d3+/–) 9.d4 (9.Ba4 Nf6+–) 9...e5 (9...Rb6!?+/–) 10.de5 Be5 11.Qd5 (better is 11.Nf3 Bf6 12.Ba4+– (12.Qd5?! Qd5 13.Bd5 Rc3=)) 11...Rd6?? (better is 11...Qd5 12.Bd5 Rc3+=) 12.Qf7 1–0. MasterofDisaster – jackflanders, Live Game Caissa's Web, 2004.

3.Nc3 Nf6

4.a4 0–0 5.g3 (5.Nf3!?+=) 5...d5–/+ 6.d4 (6.Nf3 d4 7.Na2 Ne4–/+) 6...Ne4 (better is 6...c5 7.Be3 Ng4–/+) 7.Qd3?? (better is 7.Ne4 de4 8.Be3–/+) 7...c5 (better is 7...Bf5!? 8.Qe3 c5 9.Ne4 Be4 10.Nf3 Bd4 11.Qa3 Ba1 12.Qa1–+) 8.Ne4 de4 9.Qe4 cd4 10.c3? dc3–+ 11.Ra2 Bf5 12.Qe3 Qa5 13.Bg2 Rd8 14.Ra1 c2 15.Bd2–+ Ba1 16.Ba5 Rd1# 0–1. yeatond – dyeaton (1665), net–chess.com, 2007.

4.a4 d5 +=.

4.Bb2 d5 +=.

4.Nf3 0–0 5.Rb1 d6 6.e4 e5 7.Bc4 Nbd7 8.d3 Nb6 9.Bb3 Be6 10.0–0 a5 11.Be6 fe6 12.Ne2 Qd7 13.Be3 Na4 14.c4 Ng4? (better is 14...Nc5+/–) 15.Qa4+– Ne3 16.fe3 d5 (16...Bh6+–) 17.cd5 ed5 18.Nc3 c6 19.ed5 cd5 20.Qb3 Rad8 21.e4 Kh8 22.Nd5 Qg4 (22...Qd6 23.Rbc1+–) 23.Qa3 b6 (23...Qd7 24.Qa5 Rc8 25.Qd2+–) 24.Nb6 Bh6 (24...Qe6 25.Nd5 Qd7 26.Qa5+–) 25.Ne5 Be3 (25...Qe6 26.Nbd7 Kg8 27.Rf8 Bf8+–) 26.Kh1 Qe2 27.Rf8 Kg7 28.Qe7 (28...Kh6 29.Qh4 Qh5 30.Ng4 Kg7 31.Qf6) 1–0. marekt – guest2179, ICC, 2003.

3.d4 a6

4.ba6 Ra6 5.e3 Ra8 6.Bb2 b6 7.Nd2 Ba6 8.Ba6 Na6 9.Ngf3 Nf6 10.c4 0–0 11.0–0 c6 12.a3 d5 13.c5 (better is 13.Ne5!? Qd6 14.Qf3=) 13...bc5–/+ 14.dc5 Nc5 15.Nb3 Nb3 16.Qb3 Rb8 (16...c5 17.Rfb1–/+) 17.Qc2 Ne4 (17...c5!?–/+) 18.Bg7= Kg7 19.Ne5 (19.Nd4!?=) 19...Qd6–/+ 20.f4 (20.Nd3 Rfc8–/+) 20...f6 21.Ng4 (21.Nc6?? Rfc8–+) 21...h5 22.Nf2 Nf2 23.Qf2 Ra8 24.a4 Qb4 25.Qc2 White prepares the advance f5 25...Rfc8 26.f5 g5 27.Rfb1 Qe4 28.Qc5? Qf5?? 29.h3?? Kf7 30.Rb7 Re8 31.Qc6–/+ Rac8 32.Qb6 Rc2 33.Rf1 Qe4?? 34.Qf6 Kg8 35.Qg5 Kh8 36.Qh5 Kg7 37.Qg5 Qg6 38.Re7 Re7 39.Qe7 Kh6 40.Qh4 Kg7 41.Qd4 Kg8 42.Qd5 Kh7 43.Qd7 Kh6 44.Qg4 Qg4 45.hg4 Kg5 46.a5 Kg4 47.Ra1 Kg3 1–0. huno – iuliua, playok.com, 2012.

4.ba6 Na6 5.e3 Nf6 6.Nf3 0–0 7.Be2 b6 (7...c5 8.0–0=+) 8.0–0= Bb7 9.c4 d6 (9...c5 10.Bb2=) 10.Nc3 Nd7 (10...e5 11.Rb1=) 11.Bb2 e5 12.a4 ed4 13.Nd4 (13.ed4 Re8=) 13...Re8 14.Bf3 (14.a5 Nac5=+) 14...Qc8 (14...Bf3 15.Nf3 Nac5 16.Qc2=+) 15.Nc6 Nac5 16.Bd5 Ne5 17.Ne5 Be5 18.Qc2 (better 18.Qf3 Rf8 19.Bb7 Qb7 20.Qb7 Nb7 21.Rfb1=+) 18...h5?? (18...c6 19.Bf3=+) 19.h3 (better 19.Qg6! Kh8 20.Bf7+–) 19...Kg7 (19...Qf5 20.Qf5 gf5 21.Bb7 Nb7 22.Nd5 Bb2 23.Ra2=+) 20.Rfb1 Ra7 (20...f6 21.Nb5=) 21.Nb5 (21.Bb7 Rb7 22.Nd5 Ra7=) 21...Ra8 22.Be5 Re5 23.Qc3 (23.Qd1 Ra5=) 23...Kg8 (23...f6 24.a5 Bd5 25.cd5 Rd5 26.ab6 cb6 27.Ra8 Qa8 28.Ra1+=) 24.Bb7 Qb7 25.a5 Qc6 (better 25...Ra5!? 26.Ra5 ba5 27.Qa5 Rg5=) 26.ab6+– Ra1 27.Ra1 (27.Qa1 cb6 28.Nd4 Qb7+–) 27...Qb6+= 28.Qd4 (28.Qa3 Kg7+=) 28...Qb8 29.Rd1 (29.Qd1 Ne4+=) 29...Qc8 (29...Qb7 30.Nc3+=) 30.Nc3 Qe6 (better 30...Ne6!? 31.Qh4 Qa8+=) 31.Nd5+– c6 32.Nf4 Qf5 (32...Qe8!? 33.Qd6 Kh7+–) 33.Qd6 Ne6 (33...Qc2 34.Rd2 Qb1 35.Kh2 Ne4 36.Qd8 Kg7+–) 34.Qc6 (better 34.Nd3!? Ra5 35.Qc6+–) 34...Nf4+– 35.ef4 Qf4 36.Qd6?? (better 36.g3 Qf5 37.Kg2+–) 36...Re1!!–+ 37.Re1 A deflection. Do you see the mate threat? 37...Qd6 38.Rc1 Qc5 (38...Qd2 39.Rb1–+) 39.g3 Kg7 40.h4 g5 (40...Qa3 41.Rc2–+) 41.Kg2 (41.hg5 Qg5 42.Re1 h4–+) 41...g4 (41...gh4 42.gh4 Qd4 43.Kf3–+) 42.Re1 (42.Kg1 Kg6–+) 42...Kg6 (better 42...Qc4 43.Re3 Qd5 44.Kg1 f5–+) 43.Re4 (43.Rc1 Qa3 44.Re1 Qc3–+) 43...f6 (better 43...Qc6 44.c5 Qe4 45.Kg1 Qc4–+) 44.Rf4 Qe5 45.f3 (45.Kf1–+) 45...Qc3 (better 45...Qe2 46.Kg1 gf3 47.Rf3 Qf3–+) 46.fg4 hg4 (46...Qc2 47.Kh3–+) 47.Rg4 Kf5 Threatening mate: Kxg4 48.Rf4 Ke5 49.Kh3 (49.Kf2 Qd2 50.Kg1 Qe2–+) 49...f5 (49...Qb2 50.h5 Qc1 51.Kg2 Qc2 52.Kf3 Qd1 53.Ke3 Qh5 54.Re4 Kd6 55.Rd4 Kc6 56.Rh4–+) 50.h5? (50.Kg2–+) 50...Qc1 51.Kg2 Qd2 52.Kh3 Qe1 53.Kg2 Qe2 54.Kh3 Qd1 55.Kg2 Qh5 56.Kg1 (56.Rf2 Qg4 57.Rf4 Qe2 58.Kh1 Ke6–+) 56...Qe2 (56...Qh3 57.Kf2 Qh2 58.Kf3–+) 57.Rf2 (57.Kh1 Ke6–+) 57...Qe1 58.Kg2 Qe4 59.Kh2 (59.Kf1 Qc4 60.Re2 Kf6 61.Ke1–+) 59...f4 (better 59...Qc4 60.Rb2 Kd4–+) 60.Rf4 Qe3 61.Kg2 Qd2 62.Rf2 Qd7 63.Re2 Kd4?? (better 63...Kf5 64.Rf2 Kg5–+) 64.Rd2+– Kc3 (64...Kc5 65.Rd7 Kc4+–) 65.Rd7 Kc4 66.Rd4 (better 66.g4 Kc5+–) 66...Kd4 67.Kf3 Ke5 68.g4 (better 68.Kg4+–) 68...Ke6= 69.Kg3 Kf6 70.Kf4 Kf7?? (70...Kg6 71.g5=) 71.g5 (better 71.Kf5 Kg7 72.Kg5+–) 71...Kg7 72.Kg4 Kf7 ½–½. BeepBeepImAJeep (2765) – Sviridov_Valery (2635), lichess.org, 2019.

3.d4 c6

4.a4 d5=.

4.a4 Nf6=.

4.Bb2 Qa5 5.Bc3 Qb5 6.e4=+.

4.Bb2 cb5 5.a4 (5.e4 b4=+) 5...ba4–/+ 6.Ra4 d6 (6...d5 7.e3–/+) 7.c3 (7.e4 Qb6 8.Ba1 Nf6–/+) 7...e6 (7...Bd7 8.Ra3–/+) 8.e3 Bd7 9.Bb5?? (better 9.Ra3–/+) 9...Bb5–+ 10.Rb4 (10.Ra1 Nf6–+) 10...Bd7 (10...Bc6 11.d5 ed5 12.Nf3–+) 11.Qb3 (11.c4 Bc6 12.d5 Bb2 13.dc6 Qa5–+) 11...Nc6 12.Rb7 Rb8 (better 12...Na5 13.Rd7 Nb3 14.Rd8 Kd8 15.Na3–+) 13.Rb8 Qb8 14.Qb8 Nb8 15.Ne2 Ne7 16.0–0 (16.Ba3 d5–+) 16...Nbc6 (16...Bb5 17.Re1–+) 17.Ba3 d5 18.Be7 (18.Nd2 a5–+) 18...Ke7 19.Na3 Rb8 20.Rb1 (20.c4 dc4 21.Nc4 e5–+) 20...Rb1 21.Nb1 Na5 22.Nd2 (22.Na3 Bf8–+) 22...Nc4 (better 22...Bb5 23.Ng3 Nc4–+) 23.g3 (23.Nc4 dc4 24.e4–+) 23...Nd2 24.Kg2 (24.f4 a5–+) 24...a5 25.h4 a4 26.Nc1 a3 27.f3 Ba4 28.g4 (28.Kf2 Nb1–+) 28...Bb3 (28...Bd1 29.Kg3–+) 29.f4 a2 30.Na2 Ba2 31.g5 Nc4 (31...Bc4 32.Kf2–+) 32.Kf2 f6 33.Ke2 fg5 34.hg5 h6 35.Kd3 hg5 36.fg5 Nb6 (36...Nd6!? 37.Ke2–+) 37.Kc2 Bc4 38.Kd2 Nc8 39.Kc2 Nd6 40.Kd2 Ne4 41.Ke1 Bf8 (41...e5 42.Kd1–+) 42.Kd1 Kd6 43.Kc2 e5 (better 43...Be7 44.Kc1–+) 44.de5 Ke5 45.Kd1 Kf5 46.Kc2 Kg5 47.Kd1 Kh4 48.Kc2 Kh3 49.Kb2 Kh2 50.Ka1 g5 51.Kb2 g4 52.Kc1 g3 53.Kc2 (53.Kb2 g2 54.Kb1 g1Q 55.Kb2 Qf2 56.Kb1 Nc3 57.Kc1 Ba3) 53...g2 54.Kc1 (54.Kb1 g1Q 55.Kb2 Qf2 56.Kb1 Nc3 57.Kc1 Ba3) 54...g1Q 55.Kc2 (55.Kb2 Qf2 56.Kb1 Nc3 57.Kc1 Ba3) 55...Qg3 (55...Ba2 56.c4 Qb1) 56.Kb2 (56.Kd1 Bb3 57.Ke2 Qf2 58.Kd3 Qd2) 56...Qe3 57.Kc2 (57.Kb1 Ba3 58.Kc2 Qd3) 57...Qc3 58.Kb1 (58.Kd1 Qd2) 58...Bd3 (58...Nd2) 59.Ka2 Bc4 (59...Qa3) 60.Kb1= Nd2 0–1. afsharian – DrTocino_27, lichess.org, 2018.

4.Bb2 cb5 5.e3 (5.e4 b4=+) 5...a6–/+ 6.c4 (better 6.Nf3–/+) 6...e6 (better 6...bc4!? 7.Bc4 d5–/+) 7.cb5= ab5 (7...Nf6 8.Nf3=) 8.Bb5+= Ne7 9.Qb3 (9.Nf3 0–0+=) 9...Nbc6 (9...0–0 10.Nf3=) 10.Bc6 (better 10.d5!? Na5 11.Qc2 Bb2 12.Qb2=) 10...bc6=+ 11.d5 (better 11.Nc3=+) 11...cd5?? (better 11...f6 12.de6 de6=) 12.Bg7+– Rg8 13.Bf6 Ba6 14.Qb4 (14.Qc3 d6+–) 14...Rb8 (14...d6 15.Nf3+–) 15.Qe7 (better 15.Qd2!? d6+–) 15...Qe7 16.Be7 Ke7 17.Nd2 (17.Nc3 Rgc8 18.Nd1 Rc2+–) 17...Rb2 18.Ngf3 (18.a4 Rc8+–) 18...Rgb8 (18...Rc8 19.Kd1 Rcc2+–) 19.Rc1 (better 19.Kd1+–) 19...Ra2+= 20.g3 (20.g4 Rbb2=) 20...Rbb2 21.h4 Bb7 22.Rh2 d4 (22...h5 23.Rb1=) 23.e4 (23.ed4 h5+=) 23...Be4 (23...e5 24.h5=+) 24.Ne4 Re2 25.Kd1 (25.Kf1 Re4 26.Rd1 Ree2 27.Rd4 h5=) 25...Re4 26.Nd2 (better 26.Rc2 Ra1 27.Kd2=) 26...Re2?? (26...Re5 27.f3=) 27.Rc2 (better 27.Ke2 e5 28.h5+–) 27...Rc2 (27...Re1 28.Ke1 Rc2 29.Nf3=) 28.Kc2+= (worse 28.Ke2 e5=+) 28...d3 (28...Re5!?+=) 29.Kd3+– Re1 30.f3 (30.h5 d5+–) 30...Ra1 (30...d5+=) 31.Re2 (31.Nb3 Rb1 32.Kc2 Rf1+=) 31...Ra3 (31...Rg1 32.g4=) 32.Ke4 (32.Kd4 d5 33.Re3 Re3 34.Ke3 f6+=) 32...Ra4 (32...d5!? 33.Kf4 f6=) 33.Ke3+= Ra3 (33...d5 34.Re1+=) 34.Kf2+– d5 35.Re3 (35.g4 Ra4+=) 35...Ra2 (better 35...Re3 36.Ke3 f6+=) 36.Rc3?? (better 36.Rd3+–) 36...Rd2–+ 37.Ke3 (37.Ke1 Ra2–+) 37...Rd1 (37...Rg2 38.Kf4–+) 38.Kf4 (38.Ke2 Ra1–+) 38...d4 (better 38...Kd6–+) 39.Kg4?? (39.Rc7 Kf6 40.Ke4–+) 39...dc3 40.f4 c2 41.Kg5 (41.f5 ef5 42.Kf3 c1Q 43.h5 Qc3 44.Kg2 Qd2 45.Kf3 Rf1) 41...c1Q (41...Rd5 42.Kh6 Rh5 43.Kg7 c1Q 44.g4 Qc3 45.Kg8 Qc8 46.Kg7 Qf8) 42.Kh6 (42.h5 Rd5 43.Kh6 Rh5 44.Kg7 Qc8 45.g4 Qf8) 42...Rd6 (42...Rd5 43.g4 Qf4 44.Kh7 Rd8 45.h5 Qf6 46.hg6 Qg6) 43.Kg7 (43.h5 Rd5 44.g4 Qf4 45.g5 Qg5 46.Kh7 gh5 47.Kh8 Rd8 48.Kh7 Qg6) 43...e5! 44.g4 (44.fe5 Qe3 Double attack (44...Qe3 Decoy)) 44...ef4 45.g5 (45.Kh6 g5! 46.Kg5 f3 47.Kf5 Rd4 48.g5 Qf4) 45...Rd5 (45...Qb2 46.Kh7 Kf8 47.h5 Qg7) 46.Kg8 (46.h5 Qb2 47.Kh6 Kf8 48.Kh7 Qg7) 46...Rg5! 47.Kg7 (47.hg5 Qb2 Mate attack) 47...Rg4 48.Kh8 (48.Kh6 Kf8 49.h5 Qc3 50.hg6 Qh3) 48...Rh4 (48...Qc8 49.Kh7 Rh4 50.Kg7 Qh8) 49.Kg7 g5 (49...g5 50.Kg8 Qc8 51.Kg7 Qf8; 49...Qc3 50.Kg8 Qc8 51.Kg7 Qf8) 0–1. afsharian – samer9898, lichess.org, 2018.

4.e4 cb5 5.Nf3=.

4.e4 d5 5.e5 Bd7 (5...a6 6.ba6 Na6 7.Nf3=) 6.a4 a6 7.c4 (7.ba6 Na6 8.Nf3 f6=) 7...cb5 (7...ab5 8.c5–/+) 8.cb5 (8.ab5 f6 9.Bf4 fe5 10.Be5 Nf6+=) 8...a5?? (better 8...ab5 9.Qb3 Nc6–/+) 9.Nc3+= b6 (9...Be6!?+=) 10.Nd5+– e6 (10...Ra7 11.Ne3+–) 11.Nf4 (11.Bg5 f6 12.ef6 Nf6 13.Nf6 Bf6+–) 11...Ne7 12.Bc4 (12.Nf3 0–0+–) 12...Nf5 (12...0–0 13.Nf3+–) 13.Nf3 0–0 14.0–0 Be8? (14...Ra7 15.Qe2+–) 15.Nd3 (15.Ba3!? Ne7 16.d5 Nd7 17.de6 Nc5+–) 15...Nd4 (15...Bd7+–) 16.Nf4?? (better 16.Ba3+–) 16...Nf3=+ 17.gf3? (17.Qf3 Nd7 (worse 17...Be5 18.Ba3+–) 18.Be2 Ne5=+) 17...Qd1 (17...Qc7 18.Be6 Be5–+ (worse 18...fe6 19.Ne6 Qe5 20.Nf8=+)) 18.Rd1=+ Be5 19.Nd3?? (better 19.Ra2 Bd7 20.Be3=+) 19...Ba1–+ 20.Bb2 (20.Be3 Bg7 21.Bb6 Nd7–+) 20...Bb2 21.Nb2 Nd7 22.f4 (22.Ba2 Rc8 23.Nc4 Rc5–+) 22...Nc5 (22...Rc8 23.Rd6–+) 23.Rd4 (23.Rd6 Rb8–+) 23...Ra7 24.f3 (24.Be2 Rd7 25.Rd1 Rd5–+) 24...Rd7 25.Rd7 Bd7 26.Kf2 Re8 (26...Bc8 27.Ke3–+) 27.h4 (27.Ke3 Bc8–+) 27...e5 (27...Bc8 28.Ke3–+) 28.fe5 Re5 29.f4 Re7 (29...Re4 30.Kf3–+) 30.Kf3 (30.Bd5 Be6 31.Bg2 Bb3–+) 30...Bf5 31.Kg3 (31.Kf2 Bc2 32.Kf3 Na4 33.Na4 Ba4–+) 31...Be6 (better 31...Re3 32.Kf2 Rc3 33.Be2–+) 32.Be6 (32.Be2 Bb3 33.Bc4 Re3 34.Kf2 Rc3 35.Bb3 Rb3–+) 32...Re6 33.Kf3 Kg7 (33...Re4 34.Nd1–+) 34.Kg3 (34.h5 gh5 35.Nd1 Na4–+) 34...Rd6 (34...Re4 35.Kf3–+) 35.Kf3 (35.Nc4 Rd3 36.Kf2 Na4–+) 35...Nd3 (better 35...Rd4!? 36.Ke3 Rb4 37.Nd1–+) 36.Nc4 Re6 (36...Rf6 37.Nd2–+) 37.Kg3 Nc5 38.Kf3?? (38.Nb2 Re4 39.Nd1–+) 38...Na4–+ 39.Ne5 (39.Na3 Nc3 40.Kf2 Nd1 41.Kf1 Re4–+) 39...f6 (39...Nc3 40.h5–+) 40.Nd7 (40.Nc6 Nc3 41.Nd4 Re4–+) 40...Re7 (40...Nc3 41.h5–+) 41.Nb8 Nc5 (better 41...Nc3!? 42.Nc6 a4 43.Nd4–+) 42.Nc6 a4 43.Ne7 (43.Nb4 a3–+) 43...a3 44.Nd5 a2 45.Nb6 a1Q 46.Nd7 (46.Na8 Qf1 47.Ke3 Qd3 48.Kf2 Ne4 49.Ke1 Qe3 50.Kd1 Qd2) 46...Qa3 (46...Qf1 47.Ke3 Qd3 48.Kf2 Ne4 49.Kg2 Qg3 50.Kf1 Qf2) 47.Ke2 (47.Kf2 Qb2 48.Ke3 Qc3 49.Kf2 Ne4 50.Ke2 Qd2 51.Kf3 f5 52.b6 Qf2) 47...Qd3 48.Kf2 (48.Ke1 Ne4 49.b6 Qe3 50.Kd1 Qd2) 48...Ne4 49.Kg2 Qg3 50.Kh1 (50.Kf1 Qf2) 50…Nf2 0–1. afsharian – fischerkenya, lichess.org, 2018.

3.d4 Nf6

4.c3 0–0 5.a4 (5.Nf3 a6=+) 5...Re8 (5...d5 6.Bf4=+) 6.e3 e5 7.Bb2 (7.de5 Re5 8.Nf3 Re8=) 7...ed4 (7...e4 8.c4=) 8.cd4= Nd5 (8...a6 9.Nf3=) 9.Qb3 c6 10.Bc4 Qa5 (10...Qg5 11.Kf1=) 11.Bc3 (11.Nd2 d6+–) 11...Nc3 12.Qc3 (better 12.Bf7 Kf8 13.Nc3=) 12...Qc3–/+ 13.Nc3 cb5?? (13...Bd4 14.Rc1–/+) 14.ab5?? (14.Nb5!? Na6 15.Nd6+–) 14...d6 (better 14...Bd4 15.Kd2 Be5=) 15.Nge2+– Nd7 (better 15...Be6 16.Be6 fe6+–) 16.0–0?? (better 16.Nd5 a5 17.Nc7+–) 16...Nb6+= 17.Bb3 (17.Bd3 Be6+=) 17...Be6 18.Be6 fe6 19.Nf4 (19.Ne4 d5 20.Nc5 Re7=) 19...g5 (19...e5 20.Nfe2=) 20.Nh5 (better 20.Nd3=) 20...Bh8 (20...d5 21.Na4=) 21.f4 (21.Ne4 Rf8+–) 21...Rf8 (better 21...gf4!? 22.Rf4 Nc4=) 22.fg5+– Rf1 (22...Nc4 23.Rf8 Kf8 24.Kf2+–) 23.Rf1 (23.Kf1 a5+–) 23...Nc4 24.Ne4 (24.Nf6!? Kg7 25.Rf3+–) 24...Ne3+= 25.Nef6 (25.Nhf6 Kg7 26.Rf3 Nf5+=) 25...Bf6 (25...Kf7 26.Rf4=+) 26.Rf6 Rf8 27.Rf8 Kf8 28.Kf2 (28.Nf6 d5=+) 28...Nf5 (28...Nd5 29.g4 Ke7 30.h4–/+) 29.Nf6 (29.d5 ed5 30.Nf6 Kg7=+) 29...Nd4–/+ 30.Nh7 (30.b6 a5 31.Ke3 e5–/+) 30...Kg7 31.g6? (better 31.Nf6 Nb5 32.h4–/+) 31...Kg6–+ 32.Nf8 Kf7 33.Nd7 Nb5 34.h4 a5 (better 34...Nc3 35.Ke1 Ne4–+) 35.g4 (35.Nb6–+) 35...a4 36.Nb6 (36.Nf6 a3 37.Ne4 a2–+) 36...a3 37.Nc4 a2 38.Nd6 Nd6 39.g5 a1Q 40.Kf3 e5 41.Kg4 (41.Kg2 Qa2 42.Kf3 e4 43.Kf4 Qd2 44.Ke5 Nc4 45.Kf5 Qf2 46.Ke4 Qe3 47.Kd5 Nb6 48.Kd6 Qe7) 41...Qg1 42.Kh5 (42.Kf3 Qf1 43.Kg4 Qg2 44.Kh5 Kg7 45.g6 Qg6) 42...Nf5 43.g6 Qg6 0–1. afsharian – fssuri, lichess.org, 2019.

4.e3 0–0 5.c4 Re8 (5...e5 6.Bb2 d6 7.Be2=) 6.a4 d6 7.Bb2 e5 8.Qb3 (8.de5 Ng4=+ (worse 8...de5 9.Qd8 Rd8 10.Be5+=)) 8...Nbd7 9.Be2 a5 (9...c5 10.de5 de5 11.Nc3=) 10.Nf3= b6 (10...ed4 11.Bd4 Nc5 12.Qd1=) 11.d5 (better 11.0–0=) 11...c5 (11...Nc5!? 12.Qd1 e4=) 12.Nfd2 (better 12.dc6 Nc5 13.Qd1+–) 12...Ne4?? (12...Qc7+=) 13.Nc3 (better 13.Ne4 Nf6 14.Nf6 Qf6 15.0–0+–) 13...Nd2=+ 14.Kd2 Qg5 (14...Nf6 15.e4=) 15.g3 (15.h4 Qf5= (15...Qg2?? 16.Rag1 Qf2 17.Ne4 Qg1 18.Rg1+–)) 15...Nf6 16.h4 Qh6 (16...Qf5 17.f3=) 17.Rad1 (17.Rag1 Ng4 18.Ne4+=) 17...Bg4 (17...Bf5 18.Rdf1 Rad8 19.Qd1+–) 18.Bg4 (better 18.f3!? Bd7 19.g4+–) 18...Ng4= 19.Ke2 (better 19.Rdf1=) 19...Ne3?? (better 19...e4 20.h5 Qg5=+) 20.fe3+– g5 (20...Qh5 21.Kd2+–) 21.Ne4 f5 (21...g4 22.Rhf1+–) 22.hg5 (22.Ng5 Qg6+–) 22...Qg6 23.Nf2 Qg5 24.Rh4 (24.Rh3 Rf8+–) 24...f4 (24...Qg3 25.Rhh1 f4 26.Rdg1 Qe3 27.Qe3 fe3 28.Ne4+–) 25.ef4 (25.Qc2!? h6 26.Ne4 Qe7+–) 25...ef4 26.Kf3?? (26.Kf1 Qg3 27.Qg3 fg3 28.Bg7 gf2+–) 26...fg3 (26...Qg3) 27.Kg2?? (better 27.Rg4 Qf5 28.Kg3+–) 27...Qh4–+ 28.Ng4 (28.Rh1 Qf4 29.Qg3 Qg3 30.Kg3 Bb2 31.Rg1–+) 28...Qg4 (28...Re2 29.Kg1 g2 30.Nf6 Kh8 31.Qh3 Qf2 32.Kh2 g1Q) 29.Qf3 Bd4 (29...Re2 30.Kf1 Qf3 31.Kg1 Qg2) 30.Qg4+– Bg7 31.Qg3 (31.Qg7) 31...Re2 (31...Ra7 32.Kh3 Kh8 33.Bg7 Rg7 34.Qd6 Rg6+–) 32.Kf1 (better 32.Kh1 Rb2 33.Rg1+–) 32...Rb2 33.Rd2 (33.Rd2 Rd2 34.Ke1–+). afsharian – dramakomedia, lichess.org, 2018.

2.c3 Bg7

3.a3 Nf6 4.Bb2 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.a3 Bg7 4.c3 0–0).

3.Na3 c5 4.bc5= Nf6 5.d3 (5.Nf3 0–0=) 5...0–0 6.Nc4 Nd5 (6...d5 7.cd6 ed6=+) 7.Bd2 (better 7.Bb2!?=) 7...Nc3–/+ 8.Qb3 Nd5 (better 8...Ne2!? 9.Be2 Ba1–+) 9.Rc1=+ Nc6 (9...Na6 10.Na3 Ndc7 11.Nf3=) 10.a3 (10.Nf3 Rb8=) 10...e6 (10...Nd4!? 11.Qb1 Ne6=+) 11.Nf3= b6 12.Nd6 (12.e4 Nde7 13.cb6 d5=) 12...Qc7 (12...bc5 13.e4 Nb6 14.Qb5=+ (14.Rc5? Qe7 15.e5 Ne5 16.Re5 Qd6–+)) 13.Nc8 (13.e4 Nde7 14.Qc4 bc5 15.Qc5 Ba6=) 13...Rac8 (13...Rfc8 14.e4 Nf6 15.Qb5–/+) 14.cb6 (14.e4 Nde7 15.cb6 Qb6 16.Qb6 ab6=) 14...Qb6 15.Qb6 ab6 16.g3 (16.e4!? Nc7 17.Rb1=) 16...Ne5 17.Rc8 (17.Ne5 Be5 18.Kd1 Nc3 19.Ke1 d5=+) 17...Rc8 (17...Nf3!? 18.ef3 Rc8–+) 18.Ne5=+ d6?? (better 18...Be5 19.e4 Nc3=+) 19.Nc4+– Rc6 (19...Ra8 20.e3+– (worse 20.Nd6 Ra3 21.e4 Nc3 22.Bc3 Bc3 23.Ke2 Bb4+–)) 20.Bg2 b5 (20...Be5 21.0–0+–) 21.Na5 (better 21.Ne3 Kf8+–) 21...Rc8 22.0–0 (22.Nb7 Ra8 23.Bd5 Ra3+–) 22...Nc3 (22...Rc2 23.Bd5 Rd2 24.Bf3+–) 23.Kh1 (23.Bf3 Na2 24.Nc6 Bf6+–) 23...d5 (23...Ne2 24.Nc6 Bf6 25.Re1+–) 24.Nb7 (24.Rc1 Ra8 25.Rc3 Bc3 26.Bc3 Rc8+–) 24...Na4? (better 24...Ne2 25.Nd6 Rc2+–) 25.Nd6 (25.Rc1 Rc1 26.Bc1 Kf8+–) 25...Rc2 26.Bb4 Nc3 27.e4 de4 28.Bc3 (28.de4!? Na2+–) 28...Rc3 29.Nb5 (29.de4 Ra3 30.Nb5 Ra2+–) 29...Rd3? (29...Rb3 30.a4 ed3 31.Rd1+–) 30.a4 (30.Be4 Rd2+–) 30...Bf8 (30...f5+–) 31.Be4 Rd2 32.Nc3 Bc5 33.f4 f5 34.Bc6 Rc2 35.Rf3 (better 35.Nb5 Kf7 36.Rd1+–) 35...Rc1+= 36.Kg2 Kf7?? (better 36...Rc2 37.Kf1 Bb4+=) 37.Ne2+– Rc2 38.Kf1 Kf6 0–1. megarex – mayor, gameknot.com, 2012. (=1.c3 g6 2.b4 Bg7)

3.Na3 Nf6!?–/+.

3.a4 d5 4.Bb2 b6 (4...Nc6 5.d4=+) 5.d4 Bb7 (5...Nf6 6.Nf3=+) 6.e3= Nf6 7.Nd2 Nc6 (7...0–0 8.Ngf3=) 8.Bd3 0–0 9.Ne2 Re8 10.0–0 e5 (10...a6 11.Ba3=) 11.de5 (better 11.b5!? Na5 12.de5=) 11...Ne5=+ (worse 11...Re5 12.b5 Na5 13.c4+=) 12.Bc2 Ned7 (12...Ne4 13.Ne4 de4 14.Qb1=+) 13.Ng3 c6 14.Re1 Nb8 (14...a5 15.Rb1=) 15.f4 (15.a5 c5=) 15...Na6 (15...Qd6 16.Qf3 a5 17.ba5 Ra5 18.Nb3=) 16.Nf3 (16.Qf3 c5 17.b5 Nc7=) 16...Ng4=+ Attacks the backward pawn on e3 17.Nf1? (better 17.Qc1=+) 17...Nb4!–+ 18.h3 (18.cb4 Bb2 Pinning (18...Bb2 Deflection)) 18...Nc2 19.Qc2 Nf6 20.Rad1 Qc7 21.g4 (21.c4 Qe7–+) 21...Qc8 (21...Ne4 22.c4 Bb2 23.Qb2 dc4 24.Ne5–+) 22.Ng3? (22.c4 dc4 23.Qc4 b5–/+) 22...Ne4 (better 22...h5!? 23.f5 hg4 24.hg4–+) 23.Ne4 Re4 (23...de4 24.Nd2 c5 25.c4–/+) 24.Ng5 (24.Nd2 Re8 25.c4 Bb2 26.Qb2 h5–+) 24...Re8 (24...Rc4 25.Nf3 b5 26.Ra1–+) 25.Rd2 (25.c4 Bb2 26.Qb2 h6–+) 25...f6 (25...h6 26.Nf3 Re4 27.c4 Rc4 28.Qd1–+) 26.Nf3 c5 27.Rde2 Qc6 28.Rf2 (28.f5 gf5 29.gf5 Rad8–+) 28...Qd6 (28...Re4 29.a5–+) 29.Qd3 (29.c4 d4! 30.Qd2 f5 31.gf5 gf5 32.ed4 Re1 33.Qe1 cd4–+) 29...Re7 30.Rfe2 (30.c4 Rae8–+) 30...a5 (30...Qc6 31.a5–+) 31.c4 d4 (better 31...Qe6!? 32.Nd2 Rd8–+) 32.ed4–/+ Re2 33.Qe2 Qf4 34.d5 Ba6 35.Kg2 Bc4 (35...Qc4 36.Qe6 Kh8 37.Bf6 Qc2 38.Kg1 Qa4+–) 36.Qe6+– Kh8 37.Qf7?? (37.Re4 Bf1 38.Kf2+–) 37...Rf8?? (better 37...Qd6 38.Re7 Rg8–/+) 38.Re8+– Qd6 (38...Qf3 39.Kf3 Bd5 40.Qd5 Re8+–) 39.Bf6! Qf6 (39...Qf6 40.Rf8 Combination; 39...Bf6 40.Rf8 Mate attack) 40.Rf8 (40.Rf8 Bf8 41.Qf6 Kg8 42.Qe6 Kh8 43.Ng5 Be7 44.Qe7 Bd5 45.Kg3 Kg8 46.Qd8 Kg7 47.Qd5 Kf6 48.Qd6 Kg7 49.Qe7 Kh6 50.Qh7 Kg5 51.Qh4) 1–0. giraira – klule2k, gameknot.com, 2017. (=1.c3 g6 2.b4 Bg7)

3.a4 d6 4.e3 c6 5.g3 (5.d4 Nf6=) 5...e5 6.Bg2 Ne7 7.Bb2 0–0 8.h3 d5 9.d4 e4 10.Nd2 Nf5 11.Ne2 Bh6 (11...Be6 12.0–0=+) 12.0–0= Nd7 13.Re1 g5 (better 13...Bg7=) 14.f4?? (better 14.c4!?=) 14...ef3 (14...Ne3!? 15.Qc1 Ng2 16.Kg2 gf4 17.Nf4 Bf4 18.gf4 Qh4–+) 15.Nf3–/+ Ne3 16.Qd3 g4 17.hg4 Ng2 (17...Nb6 18.Nf4 Ng4 19.Bc1–/+) 18.Kg2=+ f5 (better 18...Re8!?=+) 19.gf5+= Nf6 20.Rh1 (better 20.Ne5+=) 20...Ng4–/+ 21.Rh6? (better 21.Nh4!? Rf5! 22.Bc1 Rf2 23.Kg1=+) 21...Nh6–+ 22.Rh1 (22.Nf4 Bf5 23.Qe2 Be4–+) 22...Bf5 (22...Nf5?! 23.g4 Qe7 24.gf5 Bf5 25.Qd2=+) 23.Qe3 Ng4 24.Qd2 Be4 25.Nf4 Rf7 26.Rh4 Nf6 27.Ne6?? (27.Qe2–+) 27...Bf3 28.Kh3 (28.Kh2 Qd7 29.Ng5–+) 28...Qd7 29.Qg5 Kh8 30.Qe5 (30.Qf5 Be4 31.Qe5–+) 30...Rg7 (better 30...Re8 31.Kh2 Re6 32.Qb8 Ng8–+) 31.Qf6=+ Qf7 (31...Re8 32.Qg7 Qg7 33.Ng7 Kg7 34.Rf4=+) 32.Qg7 (32.Rh7 Kh7 33.Ng5 Kg8 34.Nf7 (34.Qf7?? Rf7 35.Nf7 Kf7–+) 34...Rf7 35.Qg6 Rg7 36.Qe6 Kh8 37.Qf6 Bg4 38.Kg2=) 32...Qg7= 33.Ng7 Kg7 34.Rf4 Be2 35.g4 (35.Rf2 Bd3=) 35...a5=+ 36.Rf2 Bc4 37.Ba3 ab4 38.Bb4 Ra4 39.Rf5 Kg6 (39...Ra1 40.Re5=+) 40.Rf8 (40.Re5 Ra1=) 40...Kg5 (40...Ra1 41.Rg8 Kf6 42.Rf8 Kg7 43.Re8=+) 41.Rf7= Ra1 42.Rb7 h6 43.Rc7 Kf4 44.Bd6 Kf3 45.Rf7 (45.Rc6?? Rh1 46.Bh2 Bf1 47.Kh4 Rh2) 45...Ke4 46.Rf4 (46.Rf6 Rc1 47.Bb4 Rg1=) 46...Ke3 (46...Kd3 47.Bb4=) 47.Rf6 Kd3 48.Rf3 Kc2 49.Kg3 (49.Bb4 Be2 50.Rf6 Rg1=) 49...Rg1=+ 50.Kf4 Rf1 (50...Be2 51.Rg3 Rg3 52.Kg3 Kc3 53.Bc5=+) 51.Rf1 Bf1 52.Bb4 Bd3 53.Kg3 Be2 54.Kh4 Kd3 55.g5 hg5 56.Kg5 Kc4 57.Kf6 Kb5 58.Ke6 Bd3 59.Kd6 Bc4 60.Kc7 ½–½. giraira – mcpo, gameknot.com, 2017. (=1.c3 g6 2.b4 Bg7)

3.a4 Nf6 4.Bb2 0–0 5.e3 e5 6.h3 (6.d4 d6=+) 6...d5 7.Be2 Nbd7 8.d3 b6 (8...e4 9.Nd2=+) 9.Nd2 Ba6 10.b5 Bb7 11.d4 Re8 12.de5 Ne5 13.Ngf3 Ne4 14.Ne5 Be5 15.Ne4 de4 16.Qd8 Rad8 17.Bc4 Rd6 (17...c6 18.Ke2=+) 18.0–0 (18.Ke2!?=) 18...Red8 19.Rab1 c6 20.f4 (20.Be2 Rd2 21.Rfd1 h6=+) 20...Bg7 (20...ef3 21.gf3 cb5 22.ab5–/+) 21.f5=+ c5?? (better 21...g5=+) 22.fg6+– hg6 23.Rf7 Bd5 (better 23...Bc8 24.Ra7 Kh8+–) 24.Bd5 Rd5 25.Rg7! (25.Ra7 Rd1 26.Rd1 Rd1 27.Kf2 Rd2 28.Kf1 Rb2–/+) 25...Kf8 (25...Kg7 26.c4 Double attack) 26.Ra7 (worse 26.Rg6 Rd1 27.Rd1 Rd1 28.Kh2 Rd2+–) 26...Rd2 (26...R8d7 27.Rd7 Rd7 28.a5 ba5 29.Ba3+–) 27.Rh7 (27.c4 Ke8 28.Bf6 R8d7 29.Ra8 Kf7+–) 27...Kg8 (27...Rd1 28.Rd1 Rd1 29.Kh2+–) 28.Rh4 (28.Rb7 R2d6+–) 28...Re2 29.Re4 Rdd2 30.Rg4 Kh7 31.Ba1 Re3 (31...Ra2 32.c4 g5 33.Rg5 Re3 34.Rd1+–) 32.Rf1 (better 32.c4 g5+–) 32...Rde2 (32...Re5 33.c4 Rf5 34.Rh4 Rh5 35.Re4+–) 33.c4 (better 33.Rh4 Kg8 34.c4+–) 33...Re7 (33...Re4 34.Rf7 Kg8 35.Rg7 Kf8 36.R7g6 Rg4 37.Bg7 Ke7 38.Rg4 Ke6+–) 34.Rh4 Kg8 35.Rh8 1–0. giraira – nrgball, gameknot.com, 2018. (=1.c3 g6 2.b4 Bg7)

3.Bb2 f5 4.e3 f4 (4...e5 5.d4=) 5.a3 (5.ef4 Nf6+=) 5...fe3= 6.de3 Nf6 7.Nf3 0–0 8.Bd3 Nd5 (8...d5 9.c4=) 9.0–0 (better is 9.Bg6 Ne3 10.Bh7 Kh7 11.fe3+/–) 9...Nc3?? (better is 9...Nf6+=) 10.Nc3 Bc3 (10...d5+–) 11.Bc3 Rf7 12.Bb2 Kf8 13.Rc1 Ke8 14.Qc2 d6 15.Rfd1 Be6 16.Qc3 Kd7 17.Be2 c5 18.bc5 1–0. Fournier,Frederic (1865) – enzosss (1690), Active Blind, 2008.

3.Bb2 Nh6 4.e3= Nc6 5.Nf3 (5.b5 Na5=) 5...b6 (5...Nb4 6.d4 Nc6 7.c4+=) 6.d3 (6.d4 0–0+=) 6...Bb7 (6...Nb4 7.d4 Nc6 8.Bd3+=) 7.Be2 (7.d4 a6=) 7...e6 (7...Nb4 8.d4 Nc6 9.0–0+=) 8.Nbd2 (8.d4 a6+=) 8...Qe7 (8...Nb4 9.Rb1 Nd5 10.d4+=) 9.a4 (9.d4 a6+=) 9...Qf8 (9...Nb4 10.a5+=) 10.0–0 (10.b5 Na5+=) 10...0–0–0 (better is 10...Nb4 11.a5 Nd5=) 11.d4+/– Re8 (11...a5 12.ba5 Na5 13.c4+/–) 12.Ba3 Kb8 (12...d6 13.a5+/–) 13.Qc2 (13.b5 Ne7+–) 13...d5 (13...d6 14.a5+–) 14.c4 (14.a5 Ne7+–) 14...f5? (14...Nb4!? 15.Bb4 Qb4+/–) 15.cd5 (15.b5 Ne7+–) 15...ed5 (15...Nb4 16.Qb2 a5 17.Bb5+–) 16.b5 Nb4? (16...Ne7+–) 17.Qb2 a5 18.Nb3 Qf7 19.Na5?? ba5= 20.Bb4 ab4 21.Rab1 c6?? 22.bc6+– Bc6 23.Qb4 Qb7 24.Qb7 1–0. Fournier,Frederic (1880) – cisterciense (1760), Active blind, 2011.

3.d4 b6 4.Bf4 (4.e4 Bb7 5.Bd3 Nf6+=) 4...Bb7 5.b5 (5.f3 a5=) 5...a6 6.e3 a5 (better is 6...ab5 7.Nf3 c6=) 7.Bc4?? (better is 7.Nf3+=) 7...Bg2–+ 8.f3 (8.Bd5 Bd5 9.f3 Nf6–+) 8...Bh1 9.Bg5 (9.Kf2 d5 10.Bd3 g5 11.Bg5 Qd6–+) 9...d5 10.Bd3 f6 11.Bf4 g5 12.Bg3 g4 13.Kf2 Bf3 14.Qf1 Be4 15.a4 Bd3 16.Qd3 Nd7 17.Ne2 e5 18.Nd2 e4 19.Qb1 f5 20.Nf4 Qf6 21.Nd5 Qd8 22.Nc7 Kf7 23.Nd5 Ra7 24.Nc4 Bf8 25.h4 h5 26.Be5 Qh4 27.Ke2 Ne5 28.Ne5 Kg7 29.Nb6 Ne7 30.Qg1 g3 31.Qg2 Ng6 32.Rh1 Qg5 33.Qf3 ef3 34.Nf3 Qg4 35.Nd5 Nh4 36.Rh4 Qg6 37.Nf4 Qf7 38.Ng5 Qa2 39.Kf3 Qf2 0–1. arian1230 – Pawno Paul, ChessWorld.net, 2005.

3.d4 e5 4.e3 d5 5.de5 Be5 6.h3 (6.Nf3 Bg7=) 6...Ne7 7.f4 (7.Nf3!? Bg7 8.Be2=) 7...Bg7–/+ 8.Bb5 c6 9.Ba4 0–0 10.Bd2 (10.Nf3 Nf5–/+) 10...Nf5 11.Qf3 Qh4 12.Qf2 Qf2 13.Kf2 Nd7 14.Nf3 Bf6 (14...Nf6 15.Bc2–+) 15.g4 (15.e4 de4 16.Ng5 Nb6–/+) 15...Nh4 (15...Nd6 16.Bc2–/+) 16.Na3 (16.g5 Nf3 17.Kf3 Bg7–/+) 16...Nb6 17.Bb3 Re8 18.Nh4 Bh4 19.Kf3 g5 (19...Bf6!?–/+) 20.Nc2 (20.Be1 Be1 21.Rae1 h6=) 20...h6 21.Nd4 White intends f5 21...Nc4 Attacks the backward pawn on e3 (21...gf4 22.ef4 a5 23.a4=) 22.Bc4+= dc4 23.f5 (23.e4 Bd7+–) 23...Bd7 (23...a5 24.Rhd1=) 24.e4 (24.Be1 Be1 25.Rhe1 a5+=) 24...f6 (24...b6 25.a4=) 25.a4 a6 26.Be1 Be1 27.Rhe1 Re5 28.Rab1 b5 29.a5 Kf7 30.Rbd1 Ke7? (30...c5 31.bc5 Rc5 32.Nc2+–) 31.Rd2 (31.Kf2 c5+–) 31...Re8 (31...c5 32.Kf2+–) 32.Rh2 (32.Kf2!? c5 33.Nf3 cb4 34.Ne5 fe5+–) 32...Kf7 (32...Kd6!?+=) 33.h4+– Kg7 (33...Rg8 34.hg5 hg5 35.Kg3+–) 34.hg5+– hg5?? (better 34...fg5 35.Rhh1 c5 36.bc5 Rc5+–) 35.Reh1 Kf8 36.Rh8 (better 36.Rh7 c5 37.bc5 Re4 38.Rh8 Ke7 39.Ke4 Rh8 40.Rh8+–) 36...Ke7 37.R1h7 Kd8 38.Re8 Re8 39.Rf7 Rh8 40.Kg3 (40.Rf6!? Rh3 41.Kf2 Rc3 42.Nc6 Bc6 43.Rc6 Rb3 44.Ra6 Rb4+–) 40...Rh6+– 41.Ne6 (better 41.e5!? fe5 42.Nf3+–) 41...Ke8+= 42.Rg7 Rh1?? (better 42...Be6 43.fe6 Rh1+=) 43.Nc7 Kd8 44.Na6 Rg1 (44...Rc1 45.Nc5 Rc3 46.Kf2 Rc2 47.Ke3+–) 45.Kf3 (45.Kf2!? Rc1 46.Nc5 Rc2 47.Ke3 Bc8+–) 45...Rc1 46.Nc5 Rc3 47.Ke2 Rg3?? (47...Bc8+–) 48.Rd7 Ke8 (48...Kc8 49.a6 Rg4 50.a7 Rg2 51.Kf3+–) 49.a6 (49.e5 Rg2 50.Kf3 Rh2 51.ef6 Rh7 52.Rh7 Kd8 53.Rd7 Kc8 54.f7 c3 55.f8Q) 49...Ra3 (49...Rg4 50.e5! Rg2 51.Kf1 Rc2 52.ef6 Rc1 53.Ke2 Rc2 54.Kd1 Rd2 55.Kd2 c3 56.Kc3 Kf8 57.a7 g4 58.a8Q) 50.Ra7 (50.a7 Ra2 51.Kd1 Ra1 52.Kc2 Ra2 53.Kb1 Ra7 54.Ra7 c3 55.e5 c2 56.Kc1 Kf8 57.Ne6 Kg8 58.ef6 Kh8 59.f7 Kh7 60.f8Q) 50...Kd8 (50...Ra2 51.Ke3 Ra3 52.Kd4+–) 51.Ne6 Kc8 52.Ra8 (52.Rc7 Kb8 53.Rc6 Ra4+–) 52...Kd7 53.a7 Ke7 (53...c5 54.Rd8 Ke7 55.a8Q Ra8 56.Ra8 cb4 57.e5 fe5 58.Ra7 Kd6 59.Ng5 Kc6 60.f6 Kb6 61.Re7 Ka5 62.f7 e4 63.f8Q Ka4 64.Qf1 c3 65.Ra7 Kb3 66.Qf7 Kc2 67.Ra2 Kb1 68.Qb3 Kc1 69.Rc2) 54.Nc7 (better 54.Rh8 Kd6 55.a8R Ra8 56.Ra8 c3+–) 54...Kd7 (54...Kd6 55.e5! Ke5 56.Re8 Kf4+–) 55.Ne6 Ke7 56.Kd2 (56.Rh8!? Ra2 57.Ke3 c5 58.bc5 Ra3 59.Kd2 b4+–) 56...Ra2 57.Kc3 Ra3 (57...Kd6 58.Kd4 Rd2 59.Ke3 Rd3 60.Ke2+–) 58.Kb2 Ra4 59.Nd4 (better 59.Nc5 c3 60.Kc3 Ra2+–) 59...Rb4 60.Kc3 Ra4 61.Nc6 Kd7 62.Rd8 (better 62.Nd4!? Kc7 63.Nb5 Kc6+–) 62...Kc6 63.a8Q Ra8 64.Ra8 Kd6 65.Re8 Kd7 (65...Kc6+–) 66.Re6 Kc7 67.Rf6 Kd7 68.e5 Ke7 69.Rb6 Kd7 70.Rd6 Ke7 71.f6 Kf7 72.Rd7 Ke6 73.Re7 Kd5 74.f7 Kc5 75.f8Q b4 76.Kb2 (76.Kc2 Kc6 77.Qf3 Kc5 78.Rc7 Kd4 79.Rd7 Kc5 80.Qd5 Kb6 81.Rb7 Ka6 82.Qb5) 76...Kd4 77.Qf2 (77.Rd7 Ke3 78.Rd1 Ke2 79.Qf1 Ke3 80.Re1 Kd4 81.Qf8 c3 82.Kb3 Kd3 83.Qd6) 77...Kd5 (77...Ke4 78.Rd7 c3 79.Kc2 b3 80.Kc3 b2 81.Rd4 Ke5 82.Qf5) 78.Qf3 Kd4 (78...Kc5 79.Rc7 Kd4 80.Rd7 Kc5 81.Qd5 Kb6 82.Rb7 Ka6 83.Qb5) 79.Rd7 Ke5 (79...Kc5 80.Qd5 Kb6 81.Rb7 Ka6 82.Qb5) 80.Qf5 1–0. giraira – bharathiraja, gameknot.com, 2017. (=1.c3 g6 2.b4 Bg7)

3.d4 Nf6 4.Bf4=.

3.e3 Nc6 4.a4 Nb4–/+ 5.d4 (5.cb4 Ba1 Pinning (5...Ba1 Deflection)) 5...Nd5 (5...Nc6 6.e4–/+) 6.e4 Ndf6 7.e5 Nd5 8.Bc4 c6 9.Qf3 e6 (9...d6 10.ed6 Qd6 11.Ba3–/+) 10.h4 (10.Ba3 Qa5=) 10...f5 (10...d6 11.ed6 Qd6 12.Ne2–/+) 11.ef6 (11.h5 Nge7=) 11...Bf6 (11...Ngf6 12.Ba3–/+) 12.g4 (12.h5 Nge7=+) 12...Qa5 (12...Bh4 13.Bd3 d6 14.a5–/+) 13.Bd5 (13.Qd3 Nge7=+) 13...cd5–/+ 14.Bd2 b5 (14...Qb6!? 15.Bc1 d6–/+) 15.g5=+ Bg7 16.Ne2 (16.h5 Ne7=+ (worse 16...ba4 17.hg6 hg6 18.Rh8 Bh8 19.Qh1=)) 16...Qa6 (16...Ne7 17.h5–/+) 17.h5=+ Ne7 18.h6 Rf8 (18...Bf8=+) 19.Qg4? (better 19.Qd3 Bh8 20.Qb5=) 19...d6?? (better 19...Bh8–/+) 20.hg7+– Rg8 21.Rh7 e5 22.Qg2 e4 23.Rh8 Be6 24.Nf4 Bf7 (24...Kd7 25.Qh1+–) 25.Qh3 (better 25.f3 Kd7 26.Qh3 Nf5 27.fe4 de4 28.Nh5 gh5 29.Qf5 Be6 30.Qb5 Qc6 31.Rh5 Rg7 32.Rh4+–) 25...Nf5 (25...Rc8 26.Rg8 Bg8 27.Qh6+–) 26.Rg8 (better 26.Ng6!? Qc8 27.ab5 Kd8+–) 26...Bg8 27.Qh8 (better 27.Ng6 Ng7 28.Qh8 Kf7+–) 27...Kd7 (27...Kf7 28.Nd5 ba4 29.Ne3 Ne3 30.Be3+–) 28.Nd5! Bd5 29.Qh7 (better 29.Qa8! Ba8 30.g8Q+–) 29...Rg8=+ 30.Qg6 Ng7?? (30...Nh4 31.Qh7 Nf3 32.Kd1 b4 33.Qf5 Kc6–+) 31.Bf4+– ba4 (31...Be6 32.Qe4 Re8 33.Be3+–) 32.Nd2 Ne8 33.Qf5 Kc6?? (33...Be6 34.Qe4 Rf8 35.Be3+–) 34.Rc1 (better 34.c4 Bc4 35.Rc1+–) 34...Ng7 35.Qf6 Kd7 36.c4 Be6?? (36...Ne8 37.Qf5 Be6 38.Qe4 Rf8+–) 37.d5 (37.Ne4 Nh5 38.Qh6 Nf4 39.Nf6 Kc7 40.Ng8 Qa5 41.Kf1 Qd2 42.Qh7 Bd7=) 37...Bh3 (37...Qc8 38.Ne4 Qf8+–) 38.Qf7 Kd8 39.Qg8 Ne8 40.Ne4 a3 41.Nd6 Bd7 42.Ne8 Be8 43.Qe6 (43.Rb1 Qa5 44.Kf1 Qb6 45.Rb6 a6 46.Rb8 Kd7 47.Qe8) 43...Qe6 44.de6 Ke7 45.Ra1 Ke6 46.Ra3 Kf5 47.Be3 Bf7 48.c5 Bd5 49.Ra7 Bc6 50.f4 Bd5 51.Kd2 Kg6 52.Rc7 Kf5 53.c6 Kg6 54.Rc8 Kf5 55.c7 Ke6 56.Re8 Kf5 (56...Kd7 57.c8Q Kd6 58.Bc5) 57.c8Q Kg6 58.f5 (58.Rh8 Bg8 59.f5 Kf7 60.Qg8 Ke7 61.Qe6) 58...Kh5 59.f6 (59.Rh8 Kg4 60.Qb8 Kf5 61.Rh6 Ke4 62.Qf4) 59...Bf7 (59...Bc6 60.Rh8 Kg6 61.Rg8 Kf7 62.Rg7) 60.Rh8 Kg6 61.Qc2 1–0. giraira – reversetrick, gameknot.com, 2018. (=1.c3 g6 2.b4 Bg7)

3.e3 e6 4.Nf3 Ne7 (4...e5 5.d3=) 5.Bb2 (5.d4 a5+=) 5...c6 (5...e5 6.Be2=) 6.d4 d5 7.Bd3 (7.Be2 0–0=) 7...b6 (7...Nd7 8.0–0=) 8.0–0 Bb7 (8...Ba6 9.a3=) 9.Nbd2+= Nd7 10.Qc2 Qc7 11.Rfe1 0–0–0 (11...e5 12.Ne5 Ne5 13.de5 Qe5 14.Rab1+/–) 12.a3 (12.c4 f6+/–) 12...f6 (12...e5 13.de5 Ne5 14.Ne5 Qe5 15.Rab1+/–) 13.Rac1 Rhe8 (13...e5 14.de5 Ne5 15.Ne5 fe5 16.c4+/–) 14.Qb1 (14.c4!?+/–) 14...e5+= 15.de5 fe5 16.e4 Kb8 17.ed5 c5? 18.Ne4?? cb4?? 19.cb4+– Qd6 20.Nd6 Nf5 21.Ne8 Re8 22.Bf5 gf5 23.Qf5 Nf6 24.Ne5 Ka8 25.Nc6 Rd8 26.Nd8 Nd5 27.Bg7 (27.Bg7 Nc3 28.Qd7 Ne2 29.Re2 Ba6 30.Rc8 Bc8 31.Qc8; 27.Rc8 Bc8 28.Qc8) 1–0. Fournier,Frederic (1910) – arbitroeduardo (1795), Active blind, 2011.

3.e4 d6 4.d4 Nf6 5.Bd3 0–0 6.Nf3 Bg4 7.0–0 e5 8.de5 de5 9.h3 Bf3 10.Qf3 (< 10.gf3 Nh5–/+) 10...c5 11.b5 Qc7 12.Rd1 c4 13.Be2 Nbd7 14.Be3 Nc5 15.Nd2 Na4 16.Bg5 (16.Bc4?! Nb2 17.Bg5 Nd1 18.Rd1 Ne8=) 16...Nd7 17.Nc4 f6 18.Bc1 Ndc5 19.Ba3 Rfd8 20.Rac1 Bh6 21.Rd8 Rd8 22.Rd1 Kg7 23.Rd8 Qd8 24.Ne3 (better is 24.Bb4!?+–) 24...Qd2+= 25.Nd5 Bf4?? (better is 25...f5+=) 26.g3+– (26.Nf4?! Qf4 27.Qf4 ef4+/–) 26...Qe1?! (26...f5 27.ef5 Qa2 28.f6 Kf8 29.Nf4 Kf7+–) 27.Kg2 Ne6 (27...Bg5 28.h4 f5 29.hg5 Ne4+–) 28.gf4 (28.Nf4?! ef4 29.e5 fe5+–) 28...Nf4 (28...ef4 29.Qg4 Kf7+–) 29.Nf4 ef4 (29...Qd2 30.Ne6 Kf7+–) 30.Qd3 g5 31.Qd7 Kg6 (31...Kh8 32.Qe8 Kg7 33.Bf8 Kh8 34.Bh6) 32.Bh5! (32...Kh6 33.Bf8 Kh5 34.Qh7) 1–0. Marre – Vit_Old, zagraj.pl, 2003.

3.e4 Nf6 4.e5 Nd5=.

3.Nf3 Nf6 4.h3 0–0 5.d3 Re8 (5...d6 6.Nbd2–/+) 6.g4 (6.Nbd2 d5–/+) 6...e5 7.e4 (7.Nbd2 d5 8.Bg2 e4 9.de4 de4–+) 7...c6 (7...d5 8.Nbd2–/+) 8.Qc2 (8.Nbd2 d5–/+) 8...d5 9.Bg5 (9.Nbd2 a5–/+) 9...Nbd7 (9...a5 10.ba5 Na6 11.Nbd2–+) 10.Bf6 (10.Bg2 a5–/+) 10...Bf6 11.Nbd2 b6 (11...a5 12.ba5 Qa5 13.g5–+) 12.d4 (12.Bg2 a5–+) 12...c5 (better 12...a5!?–+) 13.dc5–/+ bc5 14.Bd3 c4 (14...Bb7!?–/+) 15.Be2=+ d4 (better 15...Bb7 16.0–0 Nb6–/+) 16.h4?? (16.Nc4 Ba6 17.g5 Bg5 18.Rd1=+) 16...Bh4?? (better 16...d3 17.Bd3 cd3 18.Qd3 Bg7–+) 17.Nh4 (17.Rh4!? d3 18.Bd3 cd3 19.Qd3+–) 17...d3= 18.Bd3 cd3 19.Qd1?? (better 19.Qd3 a5 20.Nhf3=) 19...Nf6 20.f3 (better 20.g5 Nh5 21.Nhf3–+) 20...Bb7?? (20...a5 21.b5 Be6 22.Nf1–+) 21.Kf2? (better 21.Nb3!?–/+) 21...Rc8–+ 22.Kg3? (better 22.Qb3–+) 22...g5 (better 22...Rc3 23.Rc1 Ra3–+) 23.Nf5–/+ Rc6 (23...Rc3!? 24.Qg1 h5 25.Qa7 h4 26.Kh3 Bc8 27.Nh6 Kg7 28.Nf7 Re7 29.Nd8 Ra7–+) 24.Nh6 (24.Qb3 Qc7 25.c4 Rd8+–) 24...Kg7 (24...Kf8 25.Qb3 Rc7 26.c4+=) 25.Nf5 Kf8 (25...Kg8=) 26.Rh6 (better 26.Qb3+=) 26...Bc8–/+ (26...Rc3?! 27.Rc1 Rc1 28.Qc1=) 27.c4 (better 27.Qa4 Rc3 28.Qa7 Bf5 29.gf5–/+) 27...Ba6?? (better 27...Bf5 28.ef5 e4 29.Rf6 Qf6 (29...Rf6?! 30.Ne4 Qb8 31.Kg2–+) 30.Ne4 Qe5 31.Kg2 Rc4–+) 28.b5+– Rb6 (28...Bb5 29.cb5 Rc2 30.Qg1 Rd2 31.Qc5 Kg8 32.Qe3 Ng4 33.fg4+–) 29.ba6 Ra6 30.c5 Ng8 (30...Ree6+–) 31.Rh7 (better 31.Ra6 Re6 32.Rd6 Rd6 33.cd6 Nf6+–) 31...Rc6 (31...Ree6 32.Qb3 Qc7 33.Nc4+–) 32.Qb3 (32.Nc4 Qf6 33.Ncd6 Rd8+–) 32...Rc7 (32...Ree6 33.Nc4 Rc5 34.Rc1+–) 33.Rah1 f6 (33...Qf6+–) 34.Rh8 Rg7 (34...Re6 35.Rg8! Kg8 36.Qe6 Rf7 37.Nh6 Kh8 38.Qf7 Qf8 39.Qf8 Kh7 40.Qg8) 35.Ng7 Re7 (35...Qc8 36.R1h7 Qg4 37.fg4 f5 38.Qg8 Ke7 39.Qe8 Kf6 40.Rf8) 36.Qg8 (36.Rg8) 1–0. bleeddry – cheecharito, gameknot.com, 2018. (=1.c3 g6 2.b4 Bg7)

3.a4 a6

4.a5 Nf6 5.Bb2 b6 6.ab6 cb6 7.Na3 Nc6 8.d4 0–0 9.e4 d6 10.Bd3 Ra7 11.Nf3 Rc7 12.0–0 Qd7 13.Ba6 Ba6 14.Nc2 Bf1 15.Kf1 Qe6 16.Qd3 Ne4 17.Re1 Qd5 18.Re4 f5 19.Re1 e5 20.Ne3 Qf7 21.d5 e4 22.Qb5 Na7 23.Qb6 ef3 24.gf3 Be5 25.Nc4 Bf4 26.Na5 Re7 27.Ra1 Nc8 28.Qc6 Rc7 29.Qb5 Na7 30.Qb6 Qd7 31.Qd4 Be5 32.Qe3 Bc3 33.Bc3 Qb5 34.Kg2 Re8 35.Qd4 Qd7 36.Qh8 Kf7 37.Qh7 Kf8 38.Qg6 Qf7 39.Qd6 Rce7 0–1. martenkaa91 – ptysioali, playok.com, 2012.

4.e3 b6 5.d4 Bb7 6.Ba3 d6 7.Nf3 Nd7 8.Be2 e6 9.0–0 Ne7 10.Nbd2 0–0 11.Nc4 b5 12.Na5 Be4 13.Bd3 Bd3 14.Qd3 c6 15.ab5 ab5 16.Nb3 Qc7 17.Bb2 Nb6 18.Ra8 Ra8 19.Ra1 Ra7 20.Ra7 Qa7 21.h3?? Nc4?? 22.Qc2?? Qa2–+ 23.Nc1 Qb2 24.Qb2 Nb2 25.Kh2 Na4 26.Ne2 Nd5 27.e4 Ndc3 28.Nc3 Nc3 29.e5 de5 30.de5 Nd5 31.Nd4 Nb4 32.f4 Kf8 33.g4 Ke7 34.h4 h6 35.Kg3 f6 36.g5 hg5 37.hg5 fe5 38.Nf3 ef4 39.Kf4 Kd6 40.Nh4 c5 41.Ng6 c4 42.Nh4 c3 43.Ke4 Nd5 44.Nf3 b4 45.Kd3 b3 46.Ne1 If White now only could play c2... 46...b2 47.Kc2 Nb4 48.Kb1 Kd5 49.g6 Black now must not overlook the idea e5 49...Kc4 50.Nc2 Nc2 51.Kc2 e5 52.Kb1 e4 53.Kc2 e3 54.Kd1 b1Q 55.Ke2 Bh6 56.Kf3 Qf1 57.Ke4 e2 58.g7 Bg7 (58...Bg7 59.Ke3 e1Q#; 58...e1Q#) 0–1. fmanea – miziii, playok.com, 2012.

3.Bb2 b6

4.Qc1 Bb7 5.Qc2 e6 6.c4 Bb2 7.Qb2 Qf6 8.Qf6 Nf6 9.e3 0–0 10.f3 Nc6 11.b5 (11.a3 a5 12.b5 Nd8=) 11...Nb4+= 12.Na3 a6 13.Rb1 Na2 14.ba6 Ra6 15.Nb5 c6 16.Nd6 Ra7 (better is 16...Rb8!?+=) 17.Bd3 (17.Rb6 Rb8+=) 17...Ne8 18.Ne4 (18.Nb7 Rb7 19.Rb2+/–) 18...Ra6 19.c5 b5 20.Ne2 f5 21.N4c3 Nc3 22.Nc3 Nc7 23.0–0 Rfa8 24.Ne2 (24.Be2 Ra3–/+) 24...Nd5 25.e4 fe4 26.fe4 Nf6?? 27.e5?? Nd5 28.Be4 Ne7 29.d4 Ra2 30.Nc3 Rd2 31.Rbd1 Rd1+= 32.Rd1 Ra3 33.Ne2 b4–/+ 34.Nf4 Nf5 35.Nh3 Ne3 36.Re1 Nc4 37.Rc1 Ba6 38.Nf4? b3 39.Nd3?? Nd2 40.Nb2 Ne4 41.Nc4 Ra2 (41...Ra2 42.h4 Ng3–+) 0–1. martin78ns – inxhinieri, playok.com, 2011. (=1.c3 g6 2.b4)

4.e3 Bb7 5.Nf3 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 Na6 (8...Nf6 9.Be2=) 9.d4 Nh6 (9...Nf6 10.b5 Nb8 11.c4+=) 10.Bd3 0–0 11.0–0 d6 (11...c5 12.e4+=) 12.Nbd2 c5 13.bc5 bc5 14.Re1 (14.Qe2 Nc7+=) 14...cd4 15.cd4 d5 (15...Nb4 16.Bc4+=) 16.Ba6 (16.Qb3!? Bc8 17.Bc3+=) 16...Ba6= 17.Qc1 Bc8 18.Bb2 Bf5 19.Qc3 Qd7 20.Ra1 Rc8 21.Qa3 Qe8 22.h3 Rb8 23.Ne5 f6+= 24.Nef3 Rb5 25.Nf1 Qc8 26.Bc1 Rb7 27.Bd2 Rc7 28.Bb4 e5 29.de5 fe5 30.Bc3?? Be6 31.Ng3?? Nf5 32.Nf5+/– gf5 33.Qc1?? d4 34.ed4 ed4 35.Bd4 Rc1 36.Rc1 Qc1 37.Kh2 Bd4 38.Nd4 Qc8 39.Ne6 Qe6 40.g3 Qf7 41.Kg2 h5 42.h4 f4 43.gf4 Qg7 44.Kf3 Qa7 0–1. Fournier,Frederic (1745) – dgil55, Active blind, 2011.

3.Bb2 Nc6

4.a3 a5 5.b5 Nb8 6.a4 c5 7.d3 b6 8.Nd2 d5 9.Rb1 e6 10.c4 Bb2 11.Rb2 Ne7 12.cd5 Nd5 13.g3 0–0 14.Bg2 Nd7 15.Ngf3 Bb7 16.0–0 Nb4 17.Nc4 Qc7 18.e4 Rad8 19.Qb1 Nf6 20.Rd2 Rd7 21.Nfe5 Rd4 22.Rfd1 Rfd8 23.h4 h6 24.Rf1 Kg7 25.Qe1 Nd7 26.Nd7 R8d7 27.Qe3 Rd3 28.Rd3 Rd3 29.Qc1 Rd4 30.Qc3 Qd7 31.Ne5 Qd6 32.Nf3 Kh7 33.Nd4 cd4 34.Qd2 e5 35.f4 f6 36.fe5 Qe5 37.Rd1 Be4 38.Qd4 Qd4 39.Rd4 Bg2 40.Kg2 Kg7 41.Rd6 Kf7 42.Rb6 Na2 43.Ra6 Nc3 44.Ra5 f5 45.Ra7 Ke6 46.b6 Kd6 47.b7 Kd7 48.b8Q 1–0. mzs78 – fakazer, playok.com, 2012. (=1.c3 g6 2.b4)

4.a3 a6 5.d3 b6 6.Nd2 Bb7 7.Rb1 d5 8.Ngf3 e6 9.g3 Nf6 10.Bg2 0–0 11.0–0 Rc8 12.c4 Qe7 13.cd5 Nd5 14.Bg7 Kg7 15.Qb3 b5 16.e4 Nb6 17.Rbc1 Na4 18.Nb1 Rfd8 19.Rcd1 Nd4 20.Nd4 Rd4 21.Nc3 Nb6 22.Qb2 Rcd8 23.Ne2 e5 24.Nd4 Rd4 25.Qb3 Qd6 26.Rd2 Na4 27.Rfd1 c5 28.bc5 Nc5 29.Qb4 Rb4 30.ab4 Nb3 31.Rb2 Nd4 32.h4 Qf6 33.Rdd2 Bc8 34.Ra2 Bg4 35.Kh2 Bf3 36.Rab2 Bg2 37.Kg2 Qf3 38.Kg1 Qg4 39.Kg2 f5 40.ef5 gf5 41.Ra2 Qf3 42.Kg1 Qc6 43.Rdb2 e4 44.de4 fe4 0–1. mzs78 – fakazer, playok.com, 2012. (=1.c3 g6 2.b4)

3.Bb2 e6

4.Qc2 Ne7 5.c4 0–0 6.Bg7 Kg7 7.Qc3 f6 8.Nf3 c6 9.Ng5 (9.d4 d6=) 9...d5 10.Nf3 e5 11.e3 Nd7 12.c5 e4 13.Nd4 Nb8 14.Na3 Nf5 15.Nac2 Nd4 16.Nd4 Na6? (16...a5 17.b5+=) 17.g3?? (better is 17.Ba6 ba6 18.Nc6+–) 17...Nc7= 18.h4 Ne6 19.Ne2 h6 20.Bh3 Re8 21.Be6 Be6 22.Nd4 Bf7 23.Qc1 f5 24.Qd1 Qf6 25.0–0 g5 26.hg5 hg5 27.Kg2 Rh8 28.Rh1 Rh1+= 29.Qh1 Rh8 30.Qg1 Bh5 31.Kf1? Bf3–+ 32.Nf3? Qa1 33.Kg2 Qg1 34.Ng1–+ Kg6 35.Nh3 b6 36.Ng1 bc5 37.bc5 Rb8 38.Ne2 Rb5 39.Nd4 Rc5 40.f3 ef3 41.Kf3 Ra5 42.Nc6 Ra2 43.Ne7 Kf6 44.Nd5 Ke5 45.Nc3 Rd2 46.Nb5 a6 47.Nc7 Rb2 48.Na6 g4# 0–1. martin78ns – aptekarz3min, playok.com, 2011. (=1.c3 g6 2.b4)

4.e3 c6 5.Nf3 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 b5 9.Bb2 Ne7 10.d4 d6 11.Bd3 h5 (11...0–0!?=) 12.0–0+= 0–0 13.Nbd2 Bb7 (13...Nd5 14.Qe2+=) 14.Qc2 (14.e4 Qd7+/–) 14...Nd7 (14...Nd5 15.Ra1+=) 15.Ra1 Qc7 16.h3 (16.e4 Rc8+/–) 16...Rc8 17.e4 Qd8 18.d5 (better is 18.Nb3+/–) 18...ed5+= 19.ed5 (19.Nd4 Ne5–/+) 19...Nd5–/+ 20.Nd4 (20.Re1 Ra8–/+) 20...c5 (better is 20...Bd4!? 21.cd4 Nb4–+) 21.bc5 dc5 22.N4f3? N7b6 Black plans c4 23.Bf1?? c4 24.Ba3? Rc7 25.Bb4?? Nb4 26.cb4 Ba1 27.Ne4 Bg7 28.Nc5 Bf3 29.gf3 Re7 30.Bg2 Nd5 31.Ne4–+ Qd7 32.Nc3 Nc3 (32...Nc3 33.Bf1 Re1–+) 0–1. Fournier,Frederic (2005) – silverwyrm, Active Blind, 2008.

4.e3 d6 5.Nf3 c6 (5...e5 6.d3=) 6.d4+= Ne7 7.Bd3 Nd7 8.Nbd2 b6 9.0–0 Qc7 10.Qc2 Bb7 11.a4 0–0 12.a5 b5 13.a6 Bc8 14.Rfb1 (14.Ra2 Rb8+=) 14...Nb6 (14...Nb8 15.c4 Na6 16.Bc3= (worse is 16.cb5 Nb4 17.Qc4 Nd3 18.Qd3 cb5–/+)) 15.c4 bc4 16.Bc4 (16.Nc4 Rb8+=) 16...Nc4= 17.Nc4 Rb8 18.Qe2 (18.Bc3 d5 19.Ncd2 Rb5=) 18...f5 (18...Nd5 19.Ra4–/+) 19.Ncd2 (better is 19.Bc3!?=) 19...Nd5–/+ 20.Ba3? (better is 20.Nc4–/+) 20...Nb6?? (better is 20...Nc3 21.Qc4 Nb1 22.Nb1 Qb6–+) 21.b5= cb5 22.Rb5?? Bd7?? 23.Rbb1 Rbc8 24.Rc1 Qb8 25.Rc8 Rc8 26.Rb1 Nd5?? 27.Rb8+– Rb8 28.h3 Nb4 29.Bb4 Rb4 30.g3 Rb8 31.Kh2 Bb5 32.Qe1 d5 33.Qa1 Bf8 34.Qa2 Bd6 35.Nb3 Bc4 36.Na5 Ba2–+ 37.Nb7 Be7 38.Ne5 Rc8 39.Nc5 Bc5 40.dc5 Rc5 41.Nd3 Rb5 42.Nf4 Rb1 43.Kg2 Bc4 (43...Bc4 44.Ne6 Ba6–+) 0–1. Fournier,Frederic (2000) – RoberDeNiro (1895), Active, 2009.

4.e3 Ne7 5.Nf3 0–0 6.a3 c6 7.d4 b5 (7...d5 8.Be2=) 8.Bd3 (8.a4 ba4 9.Qa4 d5+=) 8...a5 9.Nbd2 ab4 10.ab4 Ra1 11.Qa1 Bb7 12.0–0 d5 13.h3 (13.Qa7 Qd7+=) 13...Nd7= 14.Re1 (14.Qa5 Nb6=) 14...Qc7 15.Qb1 Ra8 16.e4 Nb6 (16...de4 17.Ne4 Nd5 18.Nc5=) 17.ed5 (17.Qc2 de4 18.Ne4 Ned5+=) 17...Nbd5 (17...Ned5 18.Ne4=) 18.Ne5 Be5 (18...Nf4 19.Ne4+=) 19.de5 Nf5 (19...Nf4 20.Ne4+=) 20.Bf5 (20.Ne4!?+/–) 20...ef5 21.f4?? (better is 21.Nb3+=) 21...Rd8 22.Kh1 Nb6?? 23.Nf3 Nc4 24.Qc1 Rd2?? 25.Nd2+– Nd2 26.Rd1 Nc4 27.Rd4 Nb2? 28.Qb2+– Qe5 29.fe5 c5 30.bc5 Bg2 31.Kg2 Kg7 32.Rd6 h5 33.e6 fe6 34.Re6 Kh6 35.Rd6 h4 36.c6 Kh5 37.c7 g5 38.c8Q f4 39.Qc7 (39.Qc7 f3 40.Kf1 g4 41.Qb5; 39.Qg4) 1–0. Fournier,Frederic (2010) – demonocrazy (1720), Active Blind, 2008.

4.e3 Ne7 5.Nf3 0–0 6.d4 c6 7.Bd3 a5 8.a4 (8.0–0 d5=) 8...ab4 (8...d6 9.b5+=) 9.cb4 b5 (9...d5!?=) 10.ab5+/– Ra1 11.Ba1 cb5 12.Bc3 (12.Bb5 Nd5+=) 12...d5 (12...Ba6 13.Qe2+=) 13.0–0 Bb7 (13...Bd7 14.Na3+/–) 14.Nbd2 (14.Bb5 Nf5+/–) 14...Nbc6 (14...Qc7 15.Qc2+=) 15.Qc2 (15.Bb5 Qb6 16.Qe2 Rc8+/–) 15...Nc8 (15...Qb6 16.Nb3+=) 16.Ra1 (16.Bb5 Qb6 17.Bc6 Bc6+/–) 16...Nb6 (16...Nd6 17.Nb3+=) 17.Nb3 (17.Bb5 Qc7 18.Be2+/–) 17...Re8? (17...Nc4 18.Nc5 Qe7 19.Nd2+=) 18.Be2 (18.Nc5 Qc7 19.Bb5 Nd7+–) 18...Bf8? The isolani on b4 becomes a target (better is 18...Nc4+=) 19.Nc5 Qe7 20.Nb7 Qb7+/– 21.Qb2?? Bd6?? 22.Be1?? Qe7?? 23.Ra3 Nb4 24.Bb4 Bb4 25.Qb4?? Qb4–+ (25...Qb4 26.Ra6 Qb1 27.Bf1 Nc4–+) 0–1. Fournier,Frederic (1960) – alexmcalishter (2125), Active, 2008.

4.e3 Ne7 5.Nf3 0–0 6.d4 d5 7.Bd3 b6 8.Nbd2 Bb7 (8...c5 9.0–0=) 9.Qc2 a5 10.a3 Nbc6 (10...ab4 11.cb4 c6 12.a4+=) 11.0–0+= ab4 12.ab4 Ra1 (12...Qd7 13.b5 Na7 14.Qb3+=) 13.Ra1+/– Qd7 14.e4 Nd4? (better is 14...de4 15.Ne4 Rd8+=) 15.Nd4 (15.cd4 Nc6 16.Bc3 Bd4 17.Nd4 Nd4+–) 15...Bd4 16.cd4 de4 17.Be4 Be4 18.Ne4 Nd5 19.Ng3 Qd6 20.Rd1 h5 21.Ba1 h4 22.Nf1 h3 23.f3 Nf4? 24.Qd2 hg2 25.Ng3 Nh3 26.Kg2 Nf4 27.Kh1 Qd5?? 28.Rf1 Qh5?? 29.Nh5 Nh5 30.Rg1 Ng3 31.Rg3 Kg7 32.Kg1 Rh8 33.Rg2 Rh5 34.Qb2 Rf5 35.d5 (35.d5 e5 36.Qc1+–) 1–0. Fournier,Frederic (1895) – toperdio (1725), Active Blind, 2008.

4.e3 Nf6 5.Nf3 b6 (5...0–0 6.Be2=) 6.d4 Bb7 7.Bd3 Nc6 8.0–0 d5 9.Nbd2 Qd7 (9...a6 10.a4+=) 10.a3 0–0–0 (10...a6 11.a4+=) 11.Qc2 (11.a4 Kb8+/–) 11...Kb8 (11...e5 12.de5 Ng4 13.c4 dc4 A) 14.Qc4? Nge5 15.Ne5 Ne5 (15...Be5?! 16.Bd4–+) 16.Be5 Be5–+; B) 14.Bc4 Nce5 15.Rfd1+/–) 12.Rfe1 (12.c4 dc4 13.Qc4 a6+/–) 12...Rhe8 (12...e5 13.Ne5 Ne5 14.de5+/–) 13.e4 (13.b5!? Na5 14.Ne5+/–) 13...de4= 14.Ne4 Ne4 15.Be4 f5 16.Bd3 (16.Bc6 Qc6 17.c4 Qd6+=) 16...e5= 17.de5?? (17.Be2 ed4 18.Rad1 Ne5 19.Nd4 Qe7=) 17...Be5?? (better is 17...Qd3 18.Qd3 Rd3–+) 18.Ne5 Ne5= 19.Rad1?? Nd3–+ 20.Re8 Re8 21.Qd3 Qd3 22.Rd3 Re1 0–1. Fournier,Frederic (1980) – manzanas (1915), Active Blind, 2008.

3.Bb2 Nf6

4.Qc2 0–0 5.e3 d6 6.Nf3 e5 7.Be2 Re8 8.h3 Nbd7 9.g4 (9.d4 c5+=) 9...c5 10.g5 Nd5 11.bc5 (11.Qb3 N5b6 12.e4 d5+=) 11...dc5 (11...e4 12.Bc4 Nf4 13.Nh2 Nd3 14.Bd3 ed3 15.Qd3 Nc5 16.Qe2–+) 12.Bc4 (12.Qb3 Nc7 13.d3 a5+=) 12...N7b6 13.Be2? (better is 13.Bd5!? Nd5 14.d3–/+) 13...e4–+ 14.Ng1 Qg5 15.h4?? (15.Bf1 Qh4–+) 15...Qf6 (15...Qg2 16.Na3 Qh1 17.0–0–0 Qh4 18.f3–+) 16.c4?? (16.Bb5 Bd7 17.a4–+) 16...Nb4 17.Bf6 Nc2 18.Kf1 Na1 19.Bg7 Kg7 20.Nc3 Nc2 21.h5 Nb4 22.a3 Nc6 23.hg6 fg6 24.Nh3 Bh3 25.Rh3 Nd7 26.Nd5 Rac8 27.Rg3 Nf6 28.Nf4 Ne5 29.Bd1 Rcd8 30.Ke2 Nd3 31.Nh3 Rd6 32.Bb3 Red8 33.f3 Nc1 34.Kd1 Nb3 35.Kc2 Nd2 36.fe4 Nde4 37.Rf3 Rd2 38.Kb3 b6 39.Nf4–+ a6 40.Ne6 Kf7 41.Nd8 Rd8 42.a4 a5 43.Kc2 h5 44.Rh3 Ng4 45.Rf3 Ke6 46.Rf4 Nd6 47.e4 Nf6 48.Kd3 Nde4 49.Ke3 Nd6 50.Rf1 Nf7 51.Kf4 Rd4 52.Kg3 Rc4 53.Re1 Re4 54.Rd1 Ra4 55.Rb1 Rb4 56.Re1 Ne5 57.Rd1 a4 58.Rd8 a3 59.Re8 Kf5 60.Ra8 Rb3 61.Kf2 c4 62.Ke2 b5 63.Kd2 b4 64.Kc2 Rb2 65.Kc1 c3 66.Ra5 a2 67.Ra4 b3 68.Ra3 Rb1# 0–1. martin78ns – popissldwon, playok.com, 2011. (=1.c3 g6 2.b4)

4.Qc2 0–0 5.e3 d6 6.Nf3 Bf5 7.h3?? (better is 7.Bd3 Bd3 8.Qd3+=) 7...Bc2–+ 8.Na3 Bf5 9.g4 Be6 10.Bg2 Nc6 11.0–0 h5 12.g5 Nh7 13.h4 Ne5 14.d4 Nf3 15.Bf3 c6 16.Nc2 Bh3 17.Bg2 Bg2 18.Kg2 Qd7 19.f3 f6 20.e4 fg5 21.hg5 Ng5 22.Ne3 h4 23.Ng4 Ne4! 24.fe4 Qg4 25.Kh2 Qg3 26.Kh1 h3 27.Rg1 Qf3 28.Kh2 Qe4 29.Rae1 Qc2 30.Kh1 Qb2 31.Re7 h2 32.Rg2 Rf1 33.Kh2 Rf2 34.Rf2 Qf2 35.Kh3 Qf5 36.Kh2–+ Rf8 37.Re2 Qf2! 38.Rf2 Rf2 39.Kh3 Ra2 40.Kg3 Rc2 41.Kf4 Rc3 42.Ke4 Rc4 43.Kd3 Rd4 44.Kc3 g5 45.Kb3 g4 46.Kc2 g3 47.b5 g2 48.bc6 bc6 49.Kc3 g1Q 50.Kb2 Qg3 51.Kc2 Rh4 52.Kd2 Rh2 53.Kc1 Qg1# (53...Qe1#) 0–1. martin78ns – jerzyslowik, playok.com, 2012. (=1.c3 g6 2.b4)

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

3.e3 d6

4.Bc4 Nf6 5.Qb3 e6 (5...0–0 6.Nf3–/+) 6.Ne2 (6.Nf3 Nc6+=) 6...a6 (6...d5 7.Bd3 Nbd7–/+) 7.b5? (better is 7.d4+=) 7...ab5–+ 8.Bb5 c6 9.Bd3 0–0 10.a4 1–0. maddoxdb – ajayuk1, gameknot.com, 2012. (=1.c3 g6 2.b4 Bg7)

4.Nf3 c5 5.bc5 dc5 6.Be2 a6 (6...Nf6 7.d4=) 7.0–0 Ra7 (7...Nf6 8.d4=) 8.d4+= b6 9.Bb2 cd4 10.ed4 (10.cd4 Nf6+=) 10...b5 (10...Nf6 11.Re1=) 11.Re1 a5? (11...Nc6 12.a4 b4 13.d5+=) 12.Bd3 (12.Bb5!? Bd7 13.a4+–) 12...b4 13.cb4 ab4 14.Qc2 Nc6?? The pressure on the isolated pawn grows (14...Nd7 15.Ne5 Ne5 16.de5+/–) 15.Nbd2 (15.Qc6 Bd7 16.Qc4 Rb7+–) 15...b3?? (better is 15...Rc7!?+/–) 16.ab3 (better is 16.Qc6 Bd7 17.Qc4 ba2 18.Ra2+–) 16...Ra1 17.Ra1 (17.Qc6 Bd7 18.Qc5 Re1 19.Ne1 Nf6+=) 17...Bd4?? (17...Nb4 18.Bb5 Kf8+–) 18.Nd4 Nd4 19.Bd4 Qd4 20.Nf3 f6 21.Nd4 e5 22.Nf3 Bb7 23.Be4 Be4 24.Qe4 f5 25.Qe5 Kf8 26.Qh8 f4 27.Ra8 (27.Ra8 Ke7 28.Qg7 Kd6 29.Ra6 Kc5 30.Qd4 Kb5 31.Qb6; 27.Ra7 h6 28.Qg7 Ke8 29.Qg8) 1–0. Fournier,Frederic (1815) – magnate5050, Active blind, 2011.

4.Nf3 e5 5.d3=.

3.e3 Nf6

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

4.Nf3 0–0 5.Bb2 d6 6.d4 e5 (6...a5 7.b5=) 7.de5 de5 8.Qd8 Rd8 9.Be2 (9.Ne5 Nd5 10.Nc4 Bf5=) 9...Nc6 (9...Nbd7 10.Nbd2+=) 10.0–0 (10.b5 Na5+=) 10...Be6 (10...a6 11.a4+=) 11.Nbd2 (better is 11.b5 Na5 12.Ne5+=) 11...Nd4?? (better is 11...Bg4 12.Rfe1 e4+=) 12.cd4+– (12.Nd4?! ed4 13.cd4 c6+/–) 12...ed4 13.Nd4 c5 14.bc5 Rd4 15.ed4 Rd8 16.Rfe1 Nd5 17.Bf3 Nf4 18.g3 Bd4 19.Bd4 Rd4 20.gf4 Rd2 21.Red1 Ra2 22.Ra2 Ba2 23.Ra1 Kg7 24.Ra2 a6 25.Bb7 a5 26.Ra5 h5 27.c6 Kh6 28.Ra8 g5 29.fg5 Kg5 30.Ra5 (30.Ra5 f5 31.c7 h4 32.c8Q Kh6 33.Qf8 Kg6 34.Ra6 Kg5 35.Qg7 Kf4 36.Ra4) 1–0. Fournier,Frederic (1885) – LEO8911, Active blind, 2011.

4.Nf3 d5 5.Bb2 0–0 6.a3 b6 (6...Nbd7 7.Be2=) 7.d4 Bb7 (7...a5 8.c4=) 8.Bd3 (8.c4 a5=) 8...c5 9.bc5 bc5 10.Qc2 (10.Nbd2 c4 11.Bc2 Nc6=) 10...cd4 (10...c4 11.Be2+=) 11.cd4= Nbd7 (11...Ba6 12.Nc3=) 12.Nbd2 (12.Nc3 Qa5=) 12...a6 (12...Rc8 13.Qb3 Nb6 14.0–0+=) 13.0–0 Rc8 14.Qb1 Nb6 15.Rc1 Rc1 16.Qc1 Qd7 17.Qd1 Rc8 18.Rb1 Ne4 19.Ne4 de4–/+ 20.Be4? Be4–+ 21.Nd2 Bb1 22.Qb1 Bd4! 23.Bd4 Rc6 24.Nf3 Nd5 25.Ba1 Nf6 26.Qb2?? Ng4 27.Qh8 (27.Qg7) 1–0. Fournier,Frederic – viliukas, Active Blind, 2009.

3.e3 Nh6

4.Bb2 Nc6 5.Nf3 (5.b5 Na5=) 5...b6 (better is 5...Nb4!? 6.d4 Nc6+=) 6.d4+= Ba6?? (better is 6...a6+=) 7.Ba6+– e6 8.Bd3 (8.0–0 0–0+–) 8...Qe7 (8...0–0 9.0–0+–) 9.Nbd2 0–0 10.0–0 Nf5 (10...Nd8 11.Qa4+–) 11.Bf5 (11.b5!? Na5+–) 11...ef5 12.g3 (12.a4 a6+–) 12...d6 (12...Rfe8 13.a3+–) 13.Re1 Rfe8 14.e4 (14.Qa4 Qd7+–) 14...Qf8 (14...Qd7 15.ef5 Qf5 16.Qb3+–) 15.ef5 Re1 16.Qe1 gf5 17.a3 Re8 18.Qf1 Re7 19.Re1 Re1 20.Qe1 Qa8 21.Kg2 h6 22.c4 Kh7 23.Qa1 Nd8 24.d5 Bb2 25.Qb2 c5 26.b5 f6 27.Nf1 Nf7 28.Ne3 Ne5 29.Ne5 fe5 30.Qc2 Qg8 31.Nf5 Kh8 32.Ne3 Qg7 33.a4 h5 34.Qf5 h4 35.h3 Kg8 36.g4 Qf8 1–0. Fournier,Frederic (1760) – cisterciense (1650), Active blind, 2011.

4.Nf3 0–0 5.Bb2 (5.d4 d5=) 5...e6 (5...a5 6.a3=) 6.d4 Qe7 7.Bd3 c5 (better is 7...d5!?+=) 8.bc5+/– b6 (8...Nc6 9.0–0+/–) 9.cb6 (9.Ba3 Nc6 10.cb6 d6 11.ba7 f5+–) 9...ab6 10.Qc2 (10.c4 d5 11.cd5 ed5+/–) 10...Nc6 (10...Bb7 11.Qb3 Bf3 12.gf3+/–) 11.Nbd2 (11.Qb3 Ba6 12.Ba3 d6 13.Ba6 Ra6+/–) 11...e5 (11...Ba6 12.c4+/–) 12.de5 (12.Qb3 Bb7+/–) 12...Ne5 13.Ne5 (13.Be4 d5 14.Bd5 Ra5+/–) 13...Qe5 14.Nf3 Qc3?? (better is 14...Qc5+/–) 15.Bc3+– Bc3 16.Qc3 d5 17.0–0 Ba6 18.Ba6 Ra6 19.Rfd1 Rfa8 20.Qd2 Ra2 21.Ra2 Ra2 22.Qa2 Kg7 23.Ra1 Nf5 24.Qa8 Ne3 25.fe3 d4 26.ed4 Kf6 27.Ra7 Kg7 28.d5 (28.d5 Kh6 29.Qf8 Kh5 30.h3 g5 31.Qf7 Kh6 32.Qh7; 28.Qd5 Kh6 29.Rf7 b5 30.Qg5) 1–0. Fournier,Frederic (1800) – kramnin02 (1680), Active blind, 2011.

2.c4 Bg7

3.Nc3 a5 4.b5 b6 5.Rb1 d6 6.g3 Bb7 7.Nf3 Nd7 8.Qc2 Ne5 9.Bg2 Nc4 10.0–0 e6 (10...d5!?=) 11.d3+= Ne5 12.Nd4 (better is 12.Ne5!? Bg2 13.Nf7 Kf7 14.Kg2+=) 12...Bg2+= 13.Kg2 Ne7 14.f4 Ng4 15.Nf3 0–0 16.h3 Nh6 17.e4 Rc8 18.Qb3 Qd7 19.d4 White plans e5 19...d5 (19...c5 20.dc5 bc5 21.Rd1–/+) 20.e5 (20.Ne5 Qd8 21.f5 ef5 22.ed5 a4=) 20...Rb8 21.Ba3 Rfc8 22.g4 Rb7 23.Rfc1 Bf8 24.Ne1 Kg7 25.Nd3 Neg8 26.Bf8= Rf8 27.a4 Ne7 28.Kg3 Kh8 29.Kf3 Nhg8 30.Qc2 Rc8 31.Qd2 Rcb8 32.h4 c6 33.bc6 Nc6 34.Nb5 Nge7 35.Ke3 Kg7 36.Nd6 Rc7 37.Nb5 Rcc8 38.Nd6 Rh8 39.Nb5 h5–/+ 40.Kf3 hg4–+ 41.Kg4 Nf5 42.Rc6?! Rh4 43.Kf3 Qc6 44.Rc1 Qe8 45.Rc7 Qh8 46.Nf2 Qh5 47.Kg2 Rh2 48.Kf1 Ng3 49.Ke1 Ne4 50.Ne4–+ Rd2 51.Rf7 Kf7 (51...Kf7 52.Nd2 Rh8–+) 0–1. McGinniss,M – Brown,Doug, Westland SE MI opB, 1985. (=1.c4 g6 2.b4)

3.Nc3 b6 4.b5 Bb7 5.Nf3 d5 6.e3 d4 7.ed4 Bd4 8.Bb2 Qd7 9.Nd4 Qd4 10.f3 Qh4 11.g3 Qd4?? (better is 11...Qf6 12.Bg2 Nd7+/–) 12.Na4+– Qd6 13.Bh8 Qe6 14.Kf2 f6 15.Qc2 Qf7 16.Re1 Nd7 17.Bh3 (better is 17.c5 Bd5+–) 17...0–0–0 (17...Ne5 18.Qc3 a6 19.ba6 Bf3+–) 18.c5 bc5 (18...Kb8 19.c6 Ne5 20.cb7 Nd3 21.Kg2 Ne1 22.Re1+–) 19.Nc5 (better is 19.Be6 Qe6 20.Re6+–) 19...Bd5 (19...Qd5 20.Re3 f5 21.Ne6+–) 20.Qa4 (better is 20.Ne6 Be6 21.Be6 Qe6 22.Re6 Kb8+–) 20...f5 21.Nd7 Rd7 22.Bc3 Kb8 (22...g5 23.Qa7 g4 24.Bg2+–) 23.Bd4 c5 (23...Bb7+–) 24.bc6 Rc7 25.Be5 (25.Rb1 Kc8 26.Qa6 Rb7 27.Qb7 Kd8 28.Qd7) 25...Bc6 26.Qc6 (26.Qc6 e6 27.Rb1 Kc8 28.Bc7 Qc7 29.Qe8 Qd8 30.Rhc1) 1–0. Hoelldorfer,August – Ruthsatz,Albert, Bayern–ch Seniors, 1998. (=1.c4 g6 2.b4 Bg7)

3.d4 c6 4.Nf3 d5 5.c5 Bg4 6.Bb2 Nf6 7.Ne5 (7.Nc3 a5 8.a3 0–0+=) 7...Be6 8.e3 Nbd7 9.Be2 Ne5 10.de5 Nd7 11.Bd4 f6 (11...0–0 12.f4 a5 13.b5+=) 12.f4? (better is 12.ef6 Bf6 13.Nc3=) 12...fe5–+ 13.Bb2 0–0 14.Nd2 ef4 15.Bg7 Kg7 16.Qc2 (16.Nf3 Qc7–+) 16...fe3 17.Qc3 Kg8 18.Nf3 Nf6 19.Ng5? (19.0–0 Bf5–+) 19...Bf5 (better is 19...d4 20.Ne6 dc3 21.Nd8 Rad8 22.Rc1–+) 20.h3 (20.Qe3 e6! 21.0–0–+) 20...d4 21.Qb3 (21.Qc4 Qd5 22.Qd5 Nd5–+) 21...Nd5 22.g4 (22.0–0 e5 23.Nf3 Qe7–+) 22...Bc8 23.Bc4 (23.0–0–0 e5 24.Ne4 a5–+) 23...e6 (better is 23...e5 24.Rf1 Kg7 25.Bd5 cd5 26.Rf8 Qf8 27.0–0–0–+) 24.Bd5 (24.h4 e5 25.0–0–0 Bg4 26.Rdg1–+) 24...ed5 25.Ne4 (25.Rf1 Qg5 26.Rf8 Kf8–+) 25...Qh4 26.Ke2 Bg4! 27.Kd3 (27.hg4 Qg4 Double attack (27...Rf4 Decoy)) 27...Bf5 28.Rh2 Be4 29.Ke2 Rf2 0–1. mi (2285) – truss (2325), net–chess.com, 2015. (=1.c4 g6 2.b4 Bg7)

3.d4 Nc6 4.d5?? (better is 4.Nf3 Nb4 5.a3+=) 4...Nb4 (better is 4...Nb8–+) 5.a3 Nd5 (5...Ba1 6.ab4 Bg7 7.e4–+) 6.cd5? (better is 6.Ra2 Ndf6 7.Nc3–+) 6...Ba1 7.e4 Bg7 8.Qd3 c6 9.Nf3 cd5 10.e5 e6 11.g3 Ne7 12.Bg5 Qa5 13.Nfd2 Be5 14.Be2 Nf5 15.0–0 0–0 16.g4 Nd4 17.Be7 Ne2 18.Qe2 Bh2! 19.Kh2 Re8 20.Bf6 b6 21.Rc1 h6 22.Rc3 d6?? 23.Rc7 b5 24.Rc6 Qa4 25.Qf3 b4 26.Rc7 Qa5?? 27.Re7?? Re7–+ 28.Be7 Qc7 29.Bf6 a5 30.a4 Bd7 31.Qb3 Qc6 32.Nf3 Qa4 33.Nbd2 Qb3 34.Nb3 a4 35.Na1 e5 36.Kh3 b3 37.Nb3 ab3 38.Nd2 b2 39.Be7 Ra6 40.Bd8 Ra1 41.Bc7 0–1. dhub noire – jammboy, ChessWorld.net, 2006.

3.Nc3 Nc6

4.b5 Na5 5.Qa4 b6 6.e3 Bb7 7.Ba3 (7.d4 a6=) 7...Nf6 8.f3 e5 (8...a6 9.d4=+) 9.c5= d6 10.c6 (10.Rb1 dc5 11.Bc5 Nd7=) 10...Bc8 11.g4 (11.Bb4 a6=+) 11...h5 (11...a6 12.ba6 h6 13.Bb4 Ba6 14.Ba6 Ra6 15.Qb5=+) 12.g5 Ng8 13.Bb4 Nc4?? (better 13...a6 14.ba6 Ba6 15.Ba6 Ra6=) 14.Bc4+– Qg5 15.Ne4 Qg2 (15...Qh4 16.Kd1 f5 17.Qb3+–) 16.Ng3 Bh3 (16...e4 17.0–0–0 d5+–) 17.Bf1 Qh1 18.Nh1 (18.Nh3 Qh2 19.Ne2 e4=+) 18...Bf1 19.Kf1 Nf6 (19...a5 20.ba6 Nf6 21.Nf2+–) 20.Ne2 (20.Qa6 Nd5 21.Rb1 0–0+–) 20...Nd5 (20...a6 21.Bc3+–) 21.Bc3 0–0 (21...a6 22.e4 Nf6 23.f4 ef4 24.Nf4+–) 22.Bb2 (better 22.Qa6 h4+–) 22...f5 (22...a6 23.ba6 Nf6 24.Rb1+–) 23.Qc2 (better 23.Qb3 Kh7 24.Qd5 a6+–) 23...e4 (23...Kh7 24.Qb3 Nf6 25.d4+–) 24.f4 (24.Bg7 Kg7 25.Nd4 Rf7+–) 24...Bb2 25.Qb2 Nf6 26.h3 (better 26.Nd4 Kf7+–) 26...Nd5 (26...a6 27.Nd4 Kf7 28.a4+–) 27.Kf2 (27.Qb3 Rf7 28.Qd5 a6+–) 27...a5 (27...Nf6 28.Nd4 Kf7 29.a4+–) 28.a3 (better 28.Qb3 Kh7 29.Qd5 Rf6+–) 28...Rf7 (28...Nf6 29.Rg1 Kh7 30.Kg2+–) 29.Kg3 (29.Nd4 Rc8+–) 29...Nf6 30.Nf2 Kh7 31.Nd4 Nd5 (31...Re8 32.Rg1+–) 32.Ne6 (better 32.Qb3 Re8+–) 32...Rg8 (32...Kh6 33.Qd4 Ne7 34.Nc7 Nc6 35.Qb6 Rc8+–) 33.Ng5 (33.Ng5 Kh6 34.Nf7 Kh7 35.Qb3+–) 1–0. rhometal – mi, net–chess.com, 2018. (=1.c4 g6 2.b4 Bg7)

4.b5 Nb4 5.Ba3 a5 6.Rb1 e6 7.e3 Ne7 8.Nf3 0–0 9.Be2 c5 10.0–0 b6 11.e4 Bb7 12.d4 cd4 13.Nd4 Bd4 14.Qd4 Nc2 15.Be7 Qe7 16.Qd2 Na3 17.Rb3 a4 18.Rb2 Qc5 19.Rfb1 Nc4 20.Qd7 Nb2 21.Qb7 Qc3 22.Qb6 Rac8 23.h3 Nd3 24.Bf3 Nf4 25.Qe3 Qe3 26.fe3 Rc2 27.a3 Ne2 28.Be2 Re2 29.Rb4 Re3 30.Ra4 Rb8 31.Rb4 Ra3 32.b6 Re3 33.b7 Rc3 34.Kf2 Rc7 35.Kf3 Rcb7 36.Rb7 Rb7 37.g4 f5 38.ef5 ef5 39.gf5 gf5 40.Kf4 Rf7 41.h4 Kg7 42.Kf3 Kg6 43.Kf4 h5 44.Kf3 Ra7 45.Kf4 Ra4 46.Kg3 f4 47.Kf3 Kf5 48.Kg2 Kg4 49.Kf2 Kh4 50.Kg2 Kg4 51.Kh2 h4 52.Kg2 h3 53.Kh2 Ra8 54.Kg1 Rg8 55.Kh2 Kg5 56.Kh3 Kf5 57.Kh2 f3 58.Kh1 f2 59.Kh2 f1Q ½–½. axtur777 – aleksefim, lichess.org, 2019.

3.Nc3 d6

4.Bb2 Nf6 5.d4 0–0 6.g3 (6.Nf3 a5 7.b5 Bg4=) 6...e5 (6...d5 7.e3+=) 7.de5= de5 8.Bg2 (8.Qd8 Rd8 9.Rd1 Nbd7=) 8...Qe7+= 9.a3 Rd8 10.Qc2 (10.Qa4 c6+=) 10...Nc6 (10...c5 11.b5+=) 11.Rd1 (11.Bc6 bc6 12.e4 Rd4+=) 11...Nd4 (11...Bf5 12.e4 Nd4 13.Qc1+=) 12.Qa4 (12.Qc1 a5 13.b5 Be6 14.Bb7 Rab8+=) 12...Bd7 13.Qa5 c6 14.Nf3 Be6 (14...b6 15.Qa6 Bc8 16.Qa4+=) 15.Nd2 (15.Ne5 Bc4 16.Qc5 Nc2 17.Kf1 Rd1 18.Nd1 Rd8–/+) 15...e4 16.0–0 Bg4 17.f3 (17.Rfe1 e3 18.Nf1 Ne2 19.Re2 ef2 20.Rf2 Bd1 (worse is 20...Rd1 21.Nd1 Bd1 22.Qg5+–) 21.Nd1 Rd1–+) 17...Ne2! 18.Kh1 (18.Ne2 ef3 Theme: Double Attack) 18...Nc3 19.Bc3 ef3 20.Nf3 Opening the e–file gets Black a lot of play 20...Rd1 21.Rd1 Bf3 22.Bf3 Qe3 23.Rd8 Rd8 24.Qd8 Ne8 (24...Ne8 25.Bg7 Qf3 (25...Kg7?! 26.Kg2–+) 26.Kg1 Qe3 (26...Kg7?! 27.Qe8 Qd1 28.Kf2–/+) 27.Kg2 Kg7–+) 0–1. Hombergs – Romischke, (year?).

4.Bb2 Nf6 5.g3 0–0 6.Bg2 e5 7.Nf3 a5 8.a3 h6 9.0–0 Be6 10.d3 Qc8 11.c5 dc5 12.bc5 Nc6 13.Nb5 Nd5 14.e4 Nde7 15.Qa4 Rd8 16.d4 ed4 17.Nbd4 Nd4 18.Bd4 Qd7 19.Qd7 Rd7 20.Bg7 Kg7 21.Ne5 Rd2 22.f4 Bb3 23.Nf3 Rdd8 24.Rf2 a4 25.Bf1 (25.Rb1 Ra5 26.Rc1 Rd1 27.Rf1 Rd3=) 25...Nc6 26.f5 (26.Rc1 Nd4=) 26...Nd4 (better is 26...gf5!? 27.ef5 Ra5–/+) 27.Nd4 Rd4 28.Rc1 Rad8 29.e5 gf5 30.Bh3 Rd1 31.Rf1 Rc1 32.Rc1 Kg6 33.Rf1 Kg7 34.Bf5 (34.Rc1 Rd5–/+) 34...Rd2 (34...Rd5 35.c6 bc6 36.Re1–/+) 35.Rf2 Rd1 36.Rf1 Rd5 37.c6 b6 38.e6 Re5 39.ef7 Bf7 40.g4 Bb3 41.Kf2= Rc5 42.Be4 Bc2 43.Bf3 Bg6 44.Rd1 Be8 45.Rd7!+/– Kf6 46.Rc7 Rc3 47.Rh7+– Bg6 48.Rb7 Ke5 49.Rb6 Be4 50.Be4 Ke4 51.Rb4 Ke5 52.Ra4 Rc6 53.Kg3 Kf6 54.Kh4 Kg6 55.Ra5 Rd6 56.a4 Rc6 57.Rb5 Rc2 58.h3 Rc3 59.a5 Ra3 60.Rb6 Kg7 61.a6 Kh7 62.g5 hg5 63.Kg5 Rh3 64.Rb7 Kg8 65.a7 (65.a7 Ra3 66.Kf6 Ra6 67.Ke5 Ra5 68.Ke6 Ra6 69.Kd5 Ra5 70.Kc4 Ra4 71.Kb5+–) 1–0. Schieferstein,Michael – Koscielski,Janusch (2235), Bad Zwesten op 2nd, 1998. (=1.c4 g6 2.b4 Bg7)

4.Nf3 Bg4=.

3.Nc3 e5

4.Rb1 Nf6=.

4.Bb2 Nc6 5.a3 (5.b5 Nce7=) 5...Nd4 (5...d6 6.e3=) 6.e3 Ne6 (6...Nf5 7.Qc2=) 7.Bd3 (7.h4 b6=) 7...f5 (7...d6 8.Be2=) 8.Nge2 (8.c5 b6=) 8...Qh4 (8...b6 9.Qb1=) 9.Qb3 (9.Nc1 b6=) 9...Nh6 (9...Qg5 10.–0=) 10.h3 (10.Nc1 Qg5 11.Bf1 Qe7=) 10...0–0 (10...d6 11.g3 Qe7 12.Kd1=) 11.c5 (11.g3 Qf6=) 11...Kh8 (11...b6 12.cb6 ab6 13.Nb5=) 12.g3 Qe7 13.Bc4 (13.Nd5 Qd8 14.f4 c6=) 13...Ng5 (13...d6 14.Nd5 Qd7 15.d4 ed4 16.Bd4+=) 14.0–0–0 (14.Ng1!?+=) 14...c6 15.f4 Nf3 (15...Ngf7 16.Bf7 Rf7 17.h4+=) 16.Rhf1 (16.g4!?+=) 16...e4+= 17.Ng1 b5 18.Be2 (18.Nf3? bc4 (18...ef3?! 19.Bd3=) 19.Qc4 ef3 20.Rf3 a5–+) 18...Ng1 19.Rg1 d6 20.cd6 Qd6 21.d4 (21.d3 Be6 22.de4 Qe7+= (worse is 22...Bb3 23.Rd6 Rac8 24.e5+/–)) 21...a6 22.Nb1 Be6 23.Qc2 (23.Qc3 Qd7+=) 23...Bd5 (23...Qe7 24.Qc5 (24.Qc6?? Rfc8 25.Qc5 Ng8–+) 24...Qb7 25.Ba1+=) 24.Kd2 (24.g4 fg4 25.Bg4 A) worse is 25...Ng4 26.hg4 (worse is 26.Rg4 Qe6 27.Qd2 Bb3=) 26...g5 27.f5+=; B) 25...Nf5 26.Bf5 Rf5–/+) 24...Qe6 25.Rc1 (25.Qc3 Bf6+=) 25...Nf7 (25...a5 26.ba5 Ra5 27.g4=) 26.Ke1 (26.h4 Rfd8=) 26...Nd6 (26...Bf6 27.h4=) 27.Nd2 (27.g4 g5 28.fg5 f4 29.ef4 Rf4+=) 27...Rfd8 (27...a5 28.ba5 Ra5 29.g4=) 28.Kf2 Bf8 29.Qc3 Rd7 30.Nb3 Rg7 31.Na5 Rc8 32.h4 Be7 33.Rc2 Bd8 34.Nb3 Qf7 35.Nc5 Qa7 36.Ra1 Bf6 37.a4= Qe7 38.ab5 Nb5 39.Bb5 ab5+= 40.Kg1 Rgg8 41.Ra6 Ra8 42.Qa3 Ra6–/+ 43.Qa6 Bh4 44.gh4? Qh4–+ 45.Qa3?? g5 46.Rg2 Qe1 47.Kh2 g4 48.Qa1 Qe3 49.Qc1 Qh3 50.Kg1 e3 51.Qc2 Rg6 52.Rh2 Qg3 53.Kf1 Bc4 54.Nd3 Bd3 55.Qd3 Qh2 56.Qe3 Qh3 57.Kf2 Qe3 58.Ke3 g3 (58...g3 59.d5 Kg8–+) 0–1. Muehlbauer,Wolfgang (1900) – Ponnath,Lorenz (2050), Landesliga Nord, 2001.

4.Bb2 d6 5.g3=.

4.Bb2 Ne7 5.Nf3 d6 6.e4 0–0 7.Be2 Nbc6 8.b5 Nd4 9.0–0 f5 10.d3 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Ne2 14.Ne2 fe4 15.de4 Bg4 16.Ne1 Qa8 17.Nc2 Qa7 18.Ne3 Be6 19.Bb2 Bh6 20.Nd5 Nd5 21.ed5 Bg4 22.Qc2 Be3 23.Ng3 Bb6 24.Bc1 Bd4 25.Bh6 Rf7 26.Qd2 Bd7 27.Ne4 Qa8 28.Be3 Be3 29.Qe3 Qa5 30.Qh6 Bf5 31.Ng5 Rd7 32.h3 Qa8 33.Re1 Qf8 34.Qf8 Kf8 35.Ra1 Bd3 36.Ra4 h6 37.Ne6 Kf7 38.g4 Kf6 39.f3 Re7 40.h4 c6 41.bc6 bc6 42.Ra8 cd5 43.cd5 e4 44.f4 Bc4 45.Rd8 Rb7 46.Nd4 Rb6 47.Nc6 e3 48.Rd6 Kg7 49.Rd7 Kf8 ½–½. Scholbach,Tillmann Dr (1960) – Monasterio,Manuel (1915), IECG, 1999. (=1.c4 g6 2.b4)

4.Bb2 Ne7 5.g3 0–0 6.Bg2 c6 7.Qb3 d6 8.Nf3 h6 9.0–0 Be6 10.d3 Nd7 11.Nd2 f5 12.b5 Nf6 13.Rab1 Qd7 14.bc6 bc6 15.Ba3 Rac8 16.Qb4 Rfd8 17.f4 Ng4 18.Nd1 ef4 19.gf4 g5 (19...c5!? 20.Qb3 d5+=) 20.fg5+= hg5 21.Nf3 Bf6 22.Qd2 f4 23.Bb2 Ne5 24.Nf2 Nf3 25.Bf3 Bb2 26.Qb2 g4 (26...d5!?+=) 27.Ne4+/– Rf8 28.Bg2 Qd8 29.Nf6 Kf7 30.Nh7 Kg6?! (30...Ng6 31.Nf8 Kf8+–) 31.Nf8 Qf8 32.Qd4 Kg5 33.Qd6 Qf6 34.Rf4! Nf5 (34...Qf4 35.Qc5 Double attack) 35.Rbf1 Qh6 (35...Nd6 36.Rf6 Re8 37.Bc6 Re7+–) 36.Rf5! (36.Rf5 Bf5 37.Rf5 Kf5 38.Qh6+–) 1–0. McCambridge,Vincent (2495) – Paragua,Mark (2200), National op Las Vegas, 1997. (=1.c4 g6 2.b4 Bg7 3.Nc3 e5)

4.g3 d6 5.Bg2 f5 6.Ba3 Nf6 7.Rc1 0–0 8.Qb3 Kh8 9.d3 Nc6 10.e3 f4 11.Nf3 fe3 12.fe3 Ng4 13.Kd2? (better is 13.Nd1+=) 13...Bh6–+ 14.Rce1? (14.Nd5 Rf3! 15.Bf3–+) 14...Rf3! 15.Bf3 Nd4 16.Qd1 Nf2 17.Qb1 Nf3 18.Ke2 Nh1 (worse is 18...Ne1 19.Re1 Ng4 20.Bc1 Nh2 21.Rh1 Bg4 22.Kd2 Nf3 23.Kc2–+) 19.Kf3 (19.Rh1 Bg4 20.Nd5–+) 19...Qf6 20.Kg2 (20.Ke2 Qf2 21.Kd1 Bg4 22.Ne2 Qe3 23.Bc1 Nf2 24.Kc2 Qd3 25.Kb2 Bc1 26.Qc1 Be2 27.Qc3–+) 20...Qf2 21.Kh1 Bg4 (21...Bg4 22.Qd1 Bd1 23.Nd1 Qe1 24.Kg2 Rf8 25.h4 Qd1 26.Kh2 Qe2 27.Kh3 Qf1 28.Kg4 Qf5#; 21...Bh3 22.Rg1 Qf3 23.Rg2 Qg2#) 0–1. Neumann,Manfred – Danker,Frank, Schleswig Holstein–ch, 1993. (=1.c4 g6 2.b4)

3.Nc3 Nf6

4.Bb2 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.Nc3).

4.d4 0–0 5.e4 d6 6.Nge2 c5 7.bc5 dc5 8.Bb2 (worse 8.dc5 Ne4 9.Bb2 Nc5 10.Qd8 Rd8–+) 8...cd4 9.Nd4 Nbd7 10.Qc2 Nc5 11.Rd1 Qb6 12.Bd3 Rd8 13.Nd5 (13.Nb3 Nd3 14.Rd3 Be6=+) 13...Nd3 (13...Nd5 14.cd5 Bd7 15.Rb1=+) 14.Rd3–/+ Nd5 15.cd5 (worse 15.ed5 e5 16.Rb3 Qa5 17.Bc3 Qc7–+) 15...Bd7 (15...e6!? 16.0–0 ed5–/+) 16.0–0 Rac8 17.Qd2 Rc4 18.Bc3 (no result). Coghini,Phil – Watts,Duncan, NZCCA Shirov's CT NZL, 2004. (=1.c4 g6 2.b4 Bg7 3.Nc3 Nf6)

3.d4 d6

4.Bb2 c5 5.bc5 (5.bc5 Qa5 Double attack (5...Qa5 Decoy); 5.dc5 Bb2 Pinning (5...Bb2 Deflection)) 5...dc5 6.Nf3 Nc6 7.e3 Bf5 8.Bd3 Qb6 9.Bc3 Bd3 10.Qd3 Nf6 11.0–0 0–0 12.d5 Nb4 13.Bb4 Qb4 14.Nbd2 Qa5 15.Nb3 Qc7 16.Rab1 Rfd8 17.e4 Nd7 18.Qe3 b6 19.g3 Rab8 20.a4 Re8 21.Qd2 e6 22.Rfe1 ed5 23.ed5 Qd6 24.Kg2 Ne5 25.Ne5 Re5 26.Re5 Be5 27.f4 Bg7 28.Re1 Kf8 29.Qe2 Qd7 30.Kf3 (better is 30.a5!?=) 30...Qa4–/+ 31.Qe7 Kg8 32.Nd2 Bc3 33.Ne4? (better is 33.Re2 Bd2 34.Qe5–+) 33...Be1 34.Nf6 Kg7 35.Qe1 Qb3 (35...Qc4 36.Qe5 Qd3 37.Kg2 Qc2 38.Kg1 Qb1 39.Kg2 Qa2 40.Kg1=) 36.Kg4 Qb2 37.Nd7 Rd8 38.Qe7 Rd7! 39.Qd7 Qe2 40.Kh3 Qc4 41.d6 ½–½. Ertekin,Oguzhan – Garcia Herrera,Enrique Ric (1650), Kocaeli TUR, World Ch U20 (b), 2013. (=1.c4 g6 2.b4 Bg7)

4.e4 Nf6 5.Bd3 0–0 6.h3 (6.Nf3 c5=) 6...Re8 (6...Nc6 7.a3 Nd4 8.Bb2–/+) 7.f3? (7.Nf3 c5=) 7...e5 (7...Nc6 8.Ne2 Nb4 9.0–0–/+) 8.Bb2 (8.d5!?=+) 8...Nc6 9.a3 (9.Qd2 Nd4 10.Bd4 ed4–/+) 9...Nd4 10.Bd4 ed4 11.Ne2 c5 12.0–0 Nh5 13.g4 Nf6 14.b5 (14.Nd2 Be6–/+) 14...h5 15.g5 (15.Kg2 hg4 16.hg4 Bg4 17.fg4 Ng4–+ (17...Ne4?! 18.Nf4=+)) 15...Nh7 16.f4 (better 16.h4–+) 16...Ng5! 17.fg5 Qg5 18.Kh2 Be5 19.Kh1 Bh3 20.Rg1 Qe3 21.Nd4 cd4 22.Ra2 Bg4 23.Rg4 (23.Qf1–+) 23...hg4 24.Rg2 (24.Qd2 Qf3 25.Qg2 Qd3 26.Nd2–+) 24...Kg7 25.Qe2 (25.Qf3 Rh8 26.Qh3 Rh3 27.Rh2 Rh2) 25...Rh8 (25...Rh8 26.Rh2 Qg3 27.Rh8 Rh8 28.Qh2 Rh2) 0–1. nay (2100) – constantine, net–chess.com, 2016. (=1.c4 g6 2.b4 Bg7)

2.d4 Bg7

3.Bb2 c6 4.Nd2 d5 5.e3 Qb6 (5...a5 6.b5=) 6.c3 (6.a3 a5=) 6...Nd7 7.Qb3 e5 (7...a5 8.Ngf3=) 8.Ngf3 (8.c4!? ed4 9.Ngf3+=) 8...e4= 9.Ng1 Ne7 10.a4 0–0 11.Ba3 Re8 12.c4 Nf5 (12...Nf6 13.b5+=) 13.Rc1 (13.a5 Qd8 14.cd5 Nb8+=) 13...Nd4 (13...dc4 14.Bc4 Nd6 15.b5 cb5 16.Be2=) 14.ed4+= Qd4 (14...e3 15.fe3 Bd4 16.a5+=) 15.Ne2 Qf6 (better is 15...Qe5!?+=) 16.cd5+– Ne5 (better is 16...cd5 17.Qd5 Nb6+–) 17.Bb2?? (better is 17.Ne4 Qd8 18.Rd1 cd5 19.Qd5 Qd5 20.Rd5+–) 17...Nd3 18.Qd3 ed3 19.Bf6 Bf6 20.dc6 de2 21.Be2 bc6 22.Rc6 Bg7 23.Kd1 Rd8 24.Bf3 Bh6 25.Rc2+= Rb8 26.b5 Bf5 27.Rb2 Rd4 28.g4 Be6 29.Ke2?? Ra4?? 30.Bc6 Rg4 31.Ra1 Bg7–+ 32.Rba2 Ba2 33.Ra2 Bd4 34.Kd3? Rd8 35.Ne4? f5 36.Nc3 Bb6 37.Ke2 Rgd4 38.Na4 Ba5 39.Kf3 Rd2 40.Ra1 Kh8 41.Nc5 0–1. Bender,Zdenko (2175) – Mrdja,Milan (2365), Velika Gorica CRO, 2012. (=1.d4 g6 2.b4)

3.Bb2 d6 4.e4 c6 5.h3 Nd7 6.Nf3 Qc7 7.Bc4 Ngf6 8.Nbd2 0–0 9.0–0 e5 10.de5 de5 11.a4 b6 12.Re1 h6 13.Rc1 Re8 14.Nb3 Bb7 15.b5 (15.Qd3 a6 16.Qc3 c5=) 15...c5 (15...cb5 16.Bb5 Red8 17.Bd3=+) 16.Nfd2 (16.Qd3 Red8+=) 16...Rad8 (16...a6 17.Ra1=) 17.f3 Nh5 18.Qe2 Nf8 19.Nf1 Nf4 20.Qf2 N8e6 21.Nbd2 Ng5 22.Ne3?? (better 22.Qe3=) 22...Nfh3! 23.gh3 Nh3 24.Kf1 (24.Kg2 Nf2 25.Re2 Ne4 26.fe4 Kh7–+) 24...Nf2 25.Kf2 Qe7 (better 25...Rd2 26.Re2 Qd8 27.Rh1–+) 26.Nb3 Qh4 27.Ke2 (27.Kg2–+) 27...Qh2 28.Kf1 Rd6 (better 28...Bc8 29.Ng4 Bg4 30.fg4–+) 29.Bd5 (29.Re2 Qh3 30.Kf2 Rf6–+) 29...Bc8 (better 29...Rf6 30.Nf5 Bd5 31.Na5 ba5 32.Re2–+) 30.Ng2 (30.Red1 Bf6 31.Rd2 Bh3 32.Ke1 Bh4 33.Kd1–+) 30...Bh3 31.Re2 Qh1 (31...Bf6 32.Rf2–+) 32.Kf2 Qg2 (32...Bg2?! 33.Rh1 Bh1 34.Re1 Bf3 35.Kf3–/+) 33.Ke3 Qg5 34.Kf2 (34.Kd3 Rd5! 35.ed5 c4 36.Kc4 Qf4 37.Nd4 Rc8 38.Kb3 ed4–+) 34...Rf6 (better 34...Qh4 35.Ke3 Rd5 36.ed5 Qf4 37.Kf2–+) 35.Nd2 h5 36.Rg1 Qh4 37.Ke3 Bh6 38.Kd3 Bd2 39.Kd2 Rf3 40.Kc1 Qf4 (better 40...Bf1 41.Bc6 Be2 42.Kb1–+) 41.Kb1 Rf1 42.Re1 Re1 43.Re1 Be6 44.Bc6 Rd8 45.Bc3 Kf8 46.Rg1 Qf2 (46...Qe3 47.Kb2 Qg1 48.Be5 Rd1 49.Bg7 Kg7 50.Bd5 Rb1 51.Ka2 Qc1 52.Be6 Qb2) 47.Rc1 Qe2 (47...f6 48.a5–+) 48.Kb2 Qc4 49.Be1 Qa2 50.Kc3 Qa3 0–1. pillsbury (2165) – wstanevans (2540), net–chess.com, 2016.

3.c3 d5 4.Bg5 Bd7 5.Nf3 a5 6.Qc1 (6.e3 h6 7.Bf4 ab4 8.cb4 Nf6=) 6...Nf6 7.h3 ab4 8.Qd2? (8.cb4 Nc6 9.b5 Na7+=) 8...0–0 (8...Ne4 9.Qc1–+) 9.Bh6 (better is 9.Bf6!? Bf6 10.cb4+=) 9...Ne4–/+ 10.Qe3 (10.Qc1!? Bh6 11.Qh6–/+) 10...bc3–+ 11.Bg7 Kg7 12.Qc1 (12.a3 c2 13.Nc3 c5 14.Ne4 de4–+) 12...c5 13.dc5 Qa5 14.Na3 (14.e3–+) 14...Qa3 15.Qd1 (15.Qa3 Ra3 16.Nd4 Ba4–+) 15...Qc5 16.e3 (16.Qd4 Qd4 17.Nd4 Rc8–+) 16...c2 17.Qc1 (17.Qd4 Qd4 18.Nd4 Ra2 19.Rc1–+) 17...Qc3 18.Nd2 Nd2 white resigned. (18...Nd2 19.Bd3 Nb3 20.Ke2 Nc1 21.Rhc1 Rc8–+) 0–1. capacuba (2300) – hgrayson (2250), net–chess.com, 2012. (=1.d4 g6 2.b4)

3.c3 d6 4.Bg5 Nd7 (4...h6 5.Bh4=) 5.e4 h6 6.Be3 e6 (6...Ngf6 7.Bd3=) 7.Bd3 b6 8.Nf3 Bb7 9.Qc1 1–0. axxle – lubo, net–chess.com, 2018. (=1.d4 g6 2.b4 Bg7)

3.e3 a6 4.Nf3 (4.Nc3 Nc6 5.Nf3 d5 6.a3 Nh6 7.Bd3 e5 8.de5) 4...Nf6 5.Nc3 Nc6 6.a3 0–0 7.Bd3 d5 8.0–0.

3.e3 b6 4.a4 (4.Nc3 Nf6 5.Nf3 0–0 6.Bd3 Nc6 7.a3 d5 8.0–0; 4.Nf3 Nf6 5.Nc3 0–0 6.Bd3 d5 7.0–0 Nc6 8.a3) 4...c5 (4...Nf6 5.Nc3+= (5.b5 d5 6.Nc3 c5 7.Nf3 0–0 8.Bd3) 5...0–0 6.b5 d5 7.Nf3 c5 8.Bd3) 5.c3 (5.Qf3 d5 6.Bb5 (6.bc5 bc5 7.Nc3 Nf6 8.Bb5) 6...Kf8+= 7.bc5 bc5 8.Nc3) 5...d5 (5...Nf6 6.Nf3+= 0–0 7.Ba3 Nc6 8.Nbd2) 6.Ba3 (6.bc5 Nf6 7.Bb5 Bd7 8.Nf3) 6...c4 (6...Nf6 7.Nf3 0–0 8.bc5) 7.b5 (7.Bc4 dc4 8.Nd2) 7...Nf6 8.Nd2 (8.Nf3+=) 8...0–0 9.f3 (better is 9.Ngf3!?+=) 9...Re8–/+ 10.f4 Ng4 (10...a6 11.Be2–/+) 11.Qe2 (11.Qf3 Be6+=) 11...f6 (11...a6!? 12.Ngf3 ab5–/+) 12.h3+= Nh6 13.Qf3 a6 (better is 13...e5 14.Bc4 Be6 15.de5 fe5+=) 14.Bc4!+/– Bb7 15.ba6 Bc6 (15...Na6!? 16.Ne2 e5+=) 16.Bb5+/– Qd7 17.Ne2 e5 18.0–0 Na6 19.Rfb1 Nc7 20.Bc6 Qc6 21.de5 fe5 22.c4?? (better is 22.fe5 Re5 23.Nb3 Ra4 24.Nbd4=) 22...e4–+ 23.Qf1 Ba1 24.Ra1 Nf5 25.g4?? Ne3 26.Qf2 Nc2 27.Bb2 Na1 28.Qd4 Qc5 29.Ba1 Ra4 30.Kg2 Qd4 31.Bd4 Ra2 32.Be3 dc4 33.Nc3 Rc2 (33...Rc2 34.f5 Rc3–+) 0–1. Seslavin,Maxim – Kuzmichev,Alexander, Novokuznetsk RUS, Winter Open, 2013. (=1.d4 g6 2.b4 Bg7)

3.e3 d5 4.Nf3 (4.Nc3 Nf6 5.Nf3 0–0 6.Bd3 Nc6 7.Rb1 a5 8.ba5) 4...Nf6 5.Nc3 0–0 6.Bd3 Nc6 7.Rb1 a5 8.ba5.

3.e3 d6 4.Nf3 Nd7 5.c3 (5.Nc3 Ngf6+=) 5...Ngf6=+ 6.a4 (6.Nbd2 a5=) 6...0–0 7.Ba3 (7.Nbd2 e5=+) 7...e5 8.b5 (8.Nbd2 Qe7–/+) 8...Re8 9.a5 (9.Be2 Ne4–/+) 9...Ne4 (9...e4 10.Nfd2–/+) 10.Qb3 (10.Bc4 c5 11.0–0 ed4 12.cd4 Ndf6–/+) 10...ed4–+ 11.cd4 Ndc5! 12.Bc5 (12.dc5 b6 Double attack (12...Ba1 Pinning; 12...Ba1 Deflection; 12...b6 Decoy)) 12...dc5 13.Bc4 Be6 14.Be6 Re6 (14...fe6?! 15.Qc2 Qd5 16.0–0=+) 15.0–0 cd4 16.Nd4 Bd4 17.ed4 Qd4 18.Ra4 Qe5 (18...Qd7 19.Qd1 Qe7 20.a6–+) 19.Qc2 (19.Rc4 Rae8–+) 19...Rae8 20.Re1?? (better 20.Rc4–+) 20...Qc5 21.Rc4 (21.Ra2 Ng3!! 22.Re6 Re6–+) 21...Nd6 (21...Nd6 22.Rf1 Qc4 23.Qc4 Nc4–+) 0–1. Kivimaki,Jaakko – Seeman,Tarvo, 26th Heart of Finland Open, 2016. (=1.d4 g6 2.b4 Bg7)

3.e3 Nf6 4.Nc3+= (4.Nf3 0–0 5.Nc3 d5 6.h3 Ne4 7.Ne4 de4 8.Nd2) 4...d5 5.Nf3 0–0 6.Ba3 Qd6 7.Bd3 a5 8.Nb5.

3.e4 b6 4.Nf3 Bb7 5.Nbd2 e6 6.Bd3 Ne7 7.b5 (7.h4 f5+=) 7...d6 (7...a6 8.c4=) 8.Qe2 (8.0–0 0–0+=) 8...Nd7 (8...0–0 9.c3+=) 9.0–0 f5 (9...0–0!?+=) 10.ef5 Nf5 (10...ef5!? 11.Re1 Nc5+/–) 11.Qe6+– Qe7 12.Qc4 0–0–0 13.Re1 Qf6 14.c3 d5 15.Qa4 Nh4? (better is 15...Kb8+–) 16.Qa7 Nf3 (16...Rhe8 17.Re8 Re8 18.a4+–) 17.Nf3 (17.gf3?! Rhe8 18.Re8 Re8+=) 17...Qd6 (17...Rde8 18.Re8 Re8 19.a4+–) 18.a4 Nb8 19.a5 ba5 20.Qa5 Qb6 21.Qa4 Rhf8 22.Ba3 Rf6 23.Bc5 Rf3 24.Bb6 Rd3 25.Qc2 Rd4 26.cd4 Nd7 27.Qc7 1–0. Trkn – CharlieByrdNY, ICC, 2005.

3.e4 d5 4.e5 e6 (4...f6 5.Nf3=) 5.Nf3+= a5 6.ba5 (6.b5 c5+=) 6...c5 7.Be2 (7.a6 Na6 8.Be3 Ne7=) 7...cd4= 8.0–0 Ra5 (8...Nc6 9.Bb5=) 9.Qd4 Nc6 10.Qb2 d4 (10...Qc7 11.Bb5=) 11.Bf4 Ne5 12.Ne5 (< 12.Nd4 Nc6 13.c3 Nd4 14.cd4 Qd4 15.Qd4 Bd4–/+) 12...Be5 13.Be5 Re5 14.Rd1 Re2 (better is 14...Qf6!?+=) 15.Qb5+– Bd7 16.Qe2 Bc6 17.Qe5 Nf6?? (better is 17...Qf6 18.Qd4 Qd4 19.Rd4 e5+–) 18.Rd4 Nd5 (18...Bd5 19.Rf4 0–0 20.Rf6 Qb6+–) 19.Qh8 Kd7 20.Qd8 Kd8 21.c4 (21...Ke7 22.cd5 Bd5 23.Nc3+–) 1–0. guest1758 – guest2899, ICC, 2006.

3.e4 e5 4.Nf3=.

3.Nf3 d6 4.e3 c6 5.a4 Bg4 6.Be2 Nf6 7.Ra3 0–0 8.0–0 Nbd7 9.c4 Qc7 10.Nc3 e5 11.h3 Bf3 12.Bf3 (worse is 12.gf3 a5 13.b5 Rae8+=) 12...Rfe8 13.de5 de5 14.Qc2 Bf8 15.Rb3 Re6 (15...a5 16.b5=) 16.g4 (16.Rd1 a5 17.b5 e4+=) 16...Rae8 (16...a5 17.Ba3=) 17.e4 (17.g5 Nh5+/–) 17...Rd8 18.Be3 Ne8 19.Ne2 (19.g5 b6+=) 19...Ng7 20.Ng3 (20.Rd1!?+=) 20...Ree8 21.Rfb1 (worse is 21.Ba7 b6 22.Bb6 Qb6–/+) 21...Ne6 22.Ne2 (worse is 22.Ba7 b6 23.Bb6 Qb6–/+) 22...b6 23.Qa2 (23.Bd2 c5+=) 23...Nb8 (23...c5!?–/+) 24.a5= Rd7 25.Bg2 (25.g5 Nd4 26.Bd4 ed4=) 25...Red8= 26.ab6 ab6 27.Nc3 Be7 (27...Nd4 28.Ra3=) 28.Bf1 (28.b5!? c5 29.Nd5+=) 28...Bg5 29.Bg5 Ng5 30.Qe2 Ne6 31.Qe3 Nd4 32.R3b2 Re7 (32...Qd6 33.c5 Qf6 34.cb6=) 33.b5 Nd7 34.bc6 Qc6 35.Nd5 Re6 36.Qa3 (36.Nb6 Nb6 37.Rb6 Qb6 38.Rb6 Rb6+=) 36...Qc5 37.Qc5 bc5 (worse is 37...Nc5 38.Bg2+/–) 38.Kg2 Ra6 39.Rb7 Kg7 40.R1b2 Raa8 41.g5 Rdb8 (41...h6 42.h4=) 42.Nc7 Rb7 43.Rb7 (43.Na8?? Rb2 44.Nc7 f5–+) 43...Rd8 44.h4 Nf8 45.Nd5 Rd7 46.Rb8 Nde6 47.Kg3 h6 48.Bh3 Rd8 (48...hg5 49.hg5 Ng5 50.Bd7 Nd7 51.Rc8+/–) 49.gh6 Kh6 50.Rb7 Kg7 51.Bg4 Rd7 (51...Ra8!?=) 52.Rd7+= Nd7 53.Be6 fe6 54.Ne3 Nb6 55.Kg4 ½–½. Stephan,Gunther – Tannebaum,Guenter, Werther Schloss op–A 5th, 1999. (=1.d4 g6 2.b4 Bg7)

3.Bb2 d5

4.e3 a6 5.Nf3 Nc6 6.c4 Nb4 7.Nc3 Bf5 8.e4?? de4–+ 9.Nd5?? Nd5 10.cd5 Qd5 11.Nd2 0–0–0 12.Nb3 a5 13.Rc1 a4 14.Nc5 b6?? 15.Ba6 Kb8–/+ 16.Nb7 Rd7 17.Qa4 c6 18.Rc6 Rb7 19.0–0?? Rc7 20.Rb6+– Rb7 21.Bb7 Qb7 22.Rb7 Kb7 23.Rc1 Nf6 24.Qb5 Ka7 25.Rc7 (25...Ka8 26.Qb7) 1–0. theeagle (1700) – chily (1685), net–chess.com, 2005.

4.e3 Nh6 5.c4 c6 6.Nc3 0–0 7.Nf3 Bg4 8.Qb3 Bf3 9.gf3 e6 10.h4 Nd7 11.h5 Qf6 12.Be2 Nf5 13.Rd1 Qg5 14.hg6 fg6 15.cd5 cd5 16.Nd5 ed5 (better is 16...Nd4!? 17.Bd4 ed5 18.Bg7 Kg7 19.Rd5 Qe7+/–) 17.Qd5+– Rf7 18.Bc4 Qe7 19.Qb7 Raf8 20.Ke2 Kh8 21.Bf7 Qf7 22.Rc1 (better is 22.Qa7 Nd6 23.f4+–) 22...Qa2 23.Rc2 (worse is 23.Qd7 Qb2 24.Kd3 Qf2–/+) 23...Nb6 24.Rhc1 Qa4 25.f4 Nd6 26.Qf3 Qb4+= 27.Kf1 Nbc4 28.Bc3 Qb5 29.Kg1 Re8 30.Ba1 a5 31.e4 Qb7 32.d5? Re4–+ 33.Bg7 Qg7 34.Qe4 Ne4 35.Rc4 Qb2 36.R1c2 Qb1 37.Rc1 Qd3 38.Rc7 Qd5 39.Rb1 Qd8 40.Rcb7 Qd2 41.R1b2 Qd1 42.Kg2 Nf6 43.Ra7 Qd5 44.Kg1 g5 45.Rb8 Ng8 46.Rbb7 Qf5 47.fg5 Qg5 48.Kh2 Qf5 49.Kg3 h5 50.f3 a4! 51.Kh4? Qf4 52.Kh5 Qf3 53.Kg5 Qe4 54.Rf7 a3! 55.Rf4 Qe5 56.Kg4 a2! 57.Kf3 Nf6 58.Rfa4 Qd5 59.Kf4 Qd6 60.Kf5 Nd7 61.Ra2 Qe5 62.Kg4 Qe6 63.Kf4 Kg7 64.R2a6 Qe5 65.Kf3 Kf8 66.Ra5 Nc5 67.Kg4 Qe4 68.Kg5 Nb7 69.Rf5 Kg7 70.Ra8 Nd6 71.Ra7 Kg8 72.Rfa5 Nf7 73.Kf6 Qc6 74.Kf5 Kg7 75.R5a6 Qf3 76.Ke6 Qe4 77.Kd7 Qd5 78.Kc7 Kf8 79.Rb7 Nd8 80.Rbb6 Ke7 81.Kb8 Qe5 82.Kc8 Qc5 83.Kb8 Nf7 84.Rf6 Ne5 85.Rfe6 Kd8 86.Rad6 Nd7 87.Kb7 Qb5 88.Ka7 Qa5 89.Kb7 Qb4 90.Ka6 Qc5 91.Kb7 Qa5 92.Rh6 Qb5 93.Ka7 Ke7 94.Rde6 Kf7 95.Rc6 Nc5 96.Rc7 Kg8 97.Rg6 ½–½. Simonyi,Z (2225) – Frick,C (2245), FSIMA April, Budapest HUN, 2009. (=1.d4 g6 2.b4)

3.e4 d6

4.Be3 Nf6 5.f3 c6 6.Qd2 h5 7.c4 a5 8.b5 c5 9.Nc3 (worse is 9.dc5 Ne4 10.fe4 Ba1 11.cd6 Qd6–/+) 9...cd4 10.Bd4 Nbd7 11.Na4 b6 12.Rd1 Qc7 13.Nh3 Nc5 14.Nc5 bc5 15.Be3 Bh3 16.gh3 a4 17.Qd3 a3 18.Rb1 Nd7 19.Rb3 0–0 (19...Ra4=) 20.Ra3 (better is 20.f4=) 20...Ne5–/+ 21.Qb3 Nf3 22.Kd1 Ra3 23.Qa3 Qb7 24.Bd3 Ra8 25.Qb3 Ne5 26.Bc2 f5 (26...Qd7!? 27.Bf4 Qe6 28.Be5 Qe5–/+ (28...de5?! 29.Ke2=)) 27.Re1 fe4 28.Bc1? (28.Bd2 d5 29.cd5 c4+=) 28...Nd3 29.Re2 (29.Bd3 ed3 Passed pawn) 29...Rf8 30.Bd3 ed3 31.Qd3 Rf1 32.Kc2 Qa7 33.Qa3 Qd7 34.b6?? Qf5–+ 35.Qd3 Rc1! 36.Kc1 Qd3 37.Re7 Qc3 38.Kd1 Qa1 39.Kc2 Qa2 40.Kd3 Qb3 41.Kd2 Qb6 0–1. Bezukladov,OD – Nesterov,Aleksandar (2205), Moscow op2, 1995. (=1.d4 g6 2.b4 Bg7)

4.Nf3+= c5 5.c3 Bg4 6.dc5 Bf3 7.Qf3+/– dc5 8.bc5 Nc6 9.Bc4 e6 10.0–0 Nge7 11.Rd1 Qa5 12.Qe3 0–0 13.Nd2 Rfd8 14.Bb2 Rd7 15.Nf3 Rad8 16.Rd7 Rd7 17.Rb1 Ne5 18.Ne5 Be5 19.h3 Rc7= 20.Bd3 Qc5 21.Qc5 Rc5 22.c4 Bb2 23.Rb2 Rc7 24.e5 Nc6 25.f4 f5 26.ef6+= Kf7 27.g4 Kf6 28.g5 Ke7 29.Kf2 e5 30.Ke3 ef4 31.Kf4 Rd7 32.Be4+= Na5 33.c5 Nc6 34.Bc6 bc6 35.Re2 Kf7 36.Re4 Rd5 37.Ra4 Rd7 38.Ra6+/– Rc7 39.Ke5 Ke7 40.a3 Ke8 41.Kd6+– Kd8 42.Rc6 Rc6?? 43.Kc6 Kc8 44.a4 (44...a6 45.a5+–) 1–0. marekt (2385) – lzw (1750), ICC, 2003.

2.e4 Nf6

3.Bd3 e5 4.b5 Bg7 5.Nf3 d5 6.Qe2 Nh5 7.Bb2 Nf4 8.Qd1 Ng2–+ 9.Kf1 Nf4 10.Ne5? Bh3 11.Ke1 Ng2 12.Ke2 Nf4?? 13.Ke3?? d4!–+ 14.Bd4 Ng2 15.Kf3 Qd4 (16.Bf1 Qa1–+) 0–1. Taulien,Christian (1945) – Kunz,Paul (2125), RST4–6D–1 remoteschach.de, 2004.

3.Bb2

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

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

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

2.e4 Bg7

3.c3 a5 4.a3 (4.b5!?=) 4...ab4+= 5.ab4?? (better is 5.d4+=) 5...Ra1–+ 6.Bb2 Ra8 7.d4 e6 8.e5 d6 9.d5 (9.Nf3 de5 10.Ne5 Nd7–+) 9...de5 10.de6 Qd1 11.Kd1 Be6 12.Na3 Nh6 13.Nb5 0–0 (better is 13...Kd7!? 14.Na3–+) 14.Nc7 Ra2 (14...Bb3 15.Kc1 Ra2 16.Be2–+) 15.Ne6 (15.Kc2 Bf5 16.Kb3 Ra7–+) 15...fe6 16.Bc1 Rff2 17.Nh3 Rf8 18.Ng5 Rd8 19.Bd2 Ra1 20.Kc2 e4! 21.Ne6 Ra2 22.Kb3 Rad2 23.Nd8 Rd8 24.Bc4 Kh8 25.Rf1 Nf5 26.g4 Ne3 27.Rf7 Nc4 28.Kc4 Rc8 29.Kb5 Nc6 30.Kb6 Ne5 31.Re7 h5 32.Kb7 Rf8 33.Kc7 hg4 34.Kd6 Nc4 35.Kd7 e3 36.Re6 Ne5 (36...Ne5 37.Re5 Be5–+) 0–1. josueaurelino – valy999, playok.com, 2012. (=1.e4 g6 2.b4)

3.c3 a6 4.Bb2 (4.d4 d5 5.Nd2 a5+=) 4...e5 (4...Nc6 5.Nf3–/+) 5.Qf3 (5.d4 ed4 6.Nf3 dc3 7.Nc3 Nf6+=) 5...d6 6.Bc4 Nf6 7.a4 (7.Ne2 Nc6–/+) 7...0–0 8.h3 (8.Ne2 a5–/+) 8...Be6 (8...d5 9.ed5 e4 10.Qg3 Nd5 11.Bd5 Qd5 12.c4 Qc4 13.Bg7 Qc1 14.Ke2 Kg7 15.Qc3 Qc3 16.Nc3–+) 9.Ba2 (9.Be6!? fe6 10.Qe3–/+) 9...Nc6 10.Na3 Na7 (better is 10...d5!? 11.d3 d4–+) 11.Be6–/+ fe6 12.Ne2 Nh5 13.Qg4 Qf6 14.0–0 Qe7 15.c4 Nf6 16.Qf3 Nd7 17.Qd3 c6 (17...Nc6!? 18.Nc2 a5+=) 18.f4 (18.a5 Rac8+=) 18...Kh8 19.fe5 de5 20.Ng3 (better is 20.Bc3+=) 20...Qb4+= 21.Qc2 (21.Bc3 Qb6 22.Qe3 Qe3 23.de3 Rf1 24.Rf1 Nc5–/+) 21...Nc5 22.Rab1? (better is 22.Rf8!? Rf8 23.Bc3–/+) 22...Qa4–+ 23.Bc1 Qa5 24.Rf8 Rf8 25.Ne2 (25.Qc3 Qc3 26.dc3 Rf7–+) 25...Qc7 (25...Nc8!? 26.Qc3 Qc3 27.Nc3–+) 26.d3 Nc8 27.Be3 Nd7 (27...Qd6 28.Rd1–+) 28.Qb3 c5 (better is 28...Qd6–+) 29.Qb7+= Qa5?? (29...Qd6!? 30.Rb3 Kg8+=) 30.Nc2 (better is 30.Qd7 Qd8 31.Rb7 Qd7 32.Rd7+–) 30...Nf6? (better is 30...Qa4 31.Na1 Ne7+=) 31.Kf1?? (better is 31.Ra1 Qd8 32.Bc5+–) 31...Nd6 (better is 31...Ng4 32.Bf4 Qd2 (32...ef4?! 33.hg4 f3 34.gf3–+) 33.hg4 Qc2–+ (33...ef4?! 34.Ne1=)) 32.Rb6?? Attacks the isolani on a6 (better is 32.Qb2+=) 32...Nb7–+ 33.Rb7 Ne8 (better is 33...Ng4! 34.Bf4 Qd2 35.hg4 Qc2 36.g3–+) 34.Kg1 Qa2 35.Bc5 Rg8 36.Ncd4 a5 (better is 36...ed4 37.Nf4 Qd2 38.g3–+) 37.Ne6 (37.Nc1 Qd2 38.Nde2 Bf8 39.Bf8 Rf8–+) 37...Qe2 38.d4 (38.Ng5 Nd6! 39.Bd6 Qe3 40.Kh2 Qg5–+) 38...Qe4 (better is 38...ed4 39.Rg7 Ng7 40.Nd4 Qc4 41.Ba7–+) 39.d5 Qc4 40.Re7 Qd5 41.Ba3 Bf6 42.Nc7 Be7 (42...Qd4 43.Kh1 Be7 44.Be7 Nc7 45.Bf6 Rg7 46.Bg5 a4 47.Bf6 a3 48.g4 a2 49.Bg7 Kg7 50.Kg2 a1Q 51.Kf3 Qe1 52.Kg2 Qdf2) 43.Nd5 Ba3 44.Ne7 Be7 0–1. pillsbury (2215) – samantho (1955), net–chess.com, 2015.

3.c3 Nc6 4.Bb2 (better is 4.b5!? Na5 5.d4+=) 4...Nb4=+ 5.cb4? (better is 5.d4 Nc6 6.d5=+) 5...Bb2–+ 6.Nc3 Ba1 7.Qa1 d6 8.Bb5 c6 9.Bd3 Nf6 10.Nf3 Qb6 11.Na4 (11.b5 Bg4–+) 11...Qb4 12.Nc3 0–0 13.0–0 Qa5 14.e5 (14.Be2 d5 15.e5 Ne4–+) 14...de5 15.a4 (15.Re1 Nd7–+) 15...Qc7 16.Bc4 Bg4 17.Qa2 Bf3 18.gf3 e6 19.Re1 Nd5 20.Nd5 ed5 21.Bd3 Rae8 22.Re3 f5 23.Bf1 e4 24.fe4 Re4 25.Re4 fe4 26.Bh3 Qf4 27.Be6 Kg7 28.Qb3 Qf2 29.Kh1 Qf1 0–1. perkinsguitar – bschardein (2605), net–chess.com, 2006.

3.c3? d5 4.d3 (4.ed5 Nf6–/+) 4...de4 (4...a5 5.b5–/+) 5.de4 Qd1 6.Kd1 Nc6 (6...Nf6 7.f3 Nc6–/+) 7.Bb5? (7.b5 Na5=+) 7...e5 (better 7...Bd7–+) 8.Bc6 bc6 9.Na3 (9.Nf3 Be6=) 9...a6 (9...Nf6 10.f3–/+) 10.Be3 (10.Nf3!?=) 10...Be6–/+ 11.c4 (11.Nf3 a5 12.Nb1 Nf6=+) 11...0–0–0 (11...Nf6!? 12.f3–/+) 12.Ke2 (12.Kc2 Nf6 13.f3 Bf8=+) 12...h6 (12...f5 13.Nf3=) 13.Nf3=+ Ne7 (13...Nf6!? 14.Nd2 Nh5=+) 14.Bc5= Ng8 15.b5 (better 15.Be3=) 15...Bc4?? (better 15...Nf6 16.Be7 ab5–/+) 16.Nc4+– ab5 (16...cb5 17.Nce5 Nf6 18.Nf7 Ne4 19.Be3+–) 17.Nce5 (17.Na5 Re8+–) 17...Re8 18.Nf7 Rh7 (18...Ba1 19.Ra1 (19.Nh8?! Bh8 20.Kd3 Nf6=) 19...Rh7 20.N7e5+–) 19.e5 Bf8 20.Bf8 Rf7 (20...Rf8 21.e6 Re8 22.N7e5 Re6 23.Rhe1+–) 21.Bc5 (21.Bb4 Rf4 22.Bc5 Ra4+–) 21...Nf6 22.Rhd1 Nd5 23.a4 (better 23.Kf1 Rf3 24.gf3 Re5 25.Rd4+–) 23...Nc3 24.Kf1 (24.Ke3 Nd1 25.Rd1 g5+–) 24...Nd1 25.Rd1 ba4 26.Ra1 (better 26.Be3 Rf3 27.gf3 Re5 28.Bh6+–) 26...Kd7? (better 26...Rf4 27.Be3 Rc4 28.Bh6 c5+–) 27.Ra4 Ke6 (27...Rf3 28.gf3 Re5 29.Be3+–) 28.Ra6 (28.Be3 g5+–) 28...Kd5 (28...g5 29.h3+– (29.Rc6?! Kd5 30.Nd4 Rf4+–)) 29.Ra5 (29.Be3 Rb8 30.Bh6 Rb6+–) 29...g5 (29...Rb8 30.Bb6 Kc4 31.Be3+–) 30.Bf8 Ke6 (30...Kc4 31.Bh6 Kb4 32.Ra1+– (32.Ng5?! Rfe7 33.Ra6 Kb5+–)) 31.Bh6 Rf3 (31...Rf4 32.Bg5 Rc4 33.Ra7+–) 32.gf3 Rh8 (32...Rg8 33.Rc5+–) 33.Bg5 Rh2 34.f4 Rh1 (34...Rh8 35.Ke2 Rb8 36.Ra7+–) 35.Kg2 Rb1 (35...Rh8 36.Kf3 Rg8 37.Ke4+–) 36.Ra7 Kd7 (36...Rb6 37.Rc7 c5 38.Rc5+–) 37.f5 Kc8 38.e6 Rb7 39.Rb7 (39.Rb7 Kb7 40.e7 c5 41.e8Q Kb6 42.f6 c6 43.Qb8 Ka5 44.Bd2 Ka6 45.f7 c4 46.f8Q c3 47.Qa3) 1–0. pumpkin516 – edmund10, gameknot.com, 2017. (=1.e4 g6 2.b4 Bg7)

3.c3 d6 4.d4 f6 5.Nf3 e5 (5...f5 6.Nbd2+=) 6.Bc4+– a6 (6...Nc6 7.0–0+–) 7.Bg8 (7.0–0!?+–) 7...Rg8+= 8.Be3 (8.0–0 f5 9.de5 de5+=) 8...b5 (8...f5 9.de5 de5 10.Qb3+=) 9.0–0 ed4 (9...f5 10.de5 de5 11.Qb3+=) 10.cd4+– Bd7 11.Nc3 a5 12.ba5 Ra5 13.Qb3 Na6?? (better 13...Rh8+–) 14.Qg8+– Ke7 (14...Bf8 15.Nd5 Bg4+–) 15.Qg7 (15.Nd5) 15...Ke8 16.Qg8 Ke7 17.Qd8 (17.Nd5) 17...Kd8+– 18.Nd5 1–0. Agiant – janelyan, lichess.org, 2018.

3.c3 e6 4.Nf3 Ne7 5.Be2 a6 6.d4 d6 7.Bd2 c6 (7...e5 8.0–0+=) 8.0–0 0–0 9.Bd3 Bd7 (9...f5 10.Qe2+=) 10.Be3 f6 11.a4 Kh8 (11...a5 12.b5+–) 12.c4 Nc8 (12...e5 13.a5+–) 13.Nc3 White prepares b5 13...Ne7 (13...f5 14.ef5 gf5 15.Ng5+–) 14.c5 d5 15.ed5 ed5 16.Qd2 Qe8 17.b5! cb5 (17...ab5 18.ab5 Combination; 17...cb5 18.ab5 Combination) 18.Bh6 (18.ab5 Bg4+–) 18...Rg8 (better 18...Bh6 19.Qh6 b4=) 19.Bg7 Kg7 20.ab5 a5 (20...Qf7 21.Ra5+–) 21.Ne2 (better 21.Qf4!?+–) 21...Bb5+– 22.Bb5 Qc8?? (better 22...Qb5 23.Rfb1 Qd7 24.Ra5 Nbc6+–) 23.Ra5+– Na6 24.Rfa1 Nc6 25.Ba6 (25.R5a4 Nc7+–) 25...ba6? (25...Na5 26.Bb5 Nb3 27.Ra8 Nd2 28.Rc8 Nf3 29.gf3 Rc8+–) 26.R5a4 Qb7 (26...a5 27.Nc3 Qd7 28.Nb5+–) 27.Nf4 Rge8 (27...Qd7 28.Qa2 Rad8 29.Re1+–) 28.Nd5 Ra7 29.Qd3 Qb5 (29...a5+–) 30.Qb5 ab5 31.Ra7 Kh6 32.Rc7 (32.Nf6 Re7 33.Ng8 Kg7 34.Ne7 Na7 35.Ra7 g5 36.c6 Kf6 37.c7 Kg7 38.Nf5 Kg6 39.g4 Kf6 40.c8Q b4 41.Qc6) 32...Nd8 33.Nf6 Rh8 (33...g5 34.Ne8 Ne6 35.Ra6 Kh5 36.Re6 Kg4 37.h3 Kf5 38.Ng7 Kf4 39.Rf7) 34.Ra8 (34.Raa7 g5 35.Ne5 g4 36.Rg7 Nf7 37.Raf7 Re8 38.Neg4) 34...b4 (34...Nf7 35.Ng4 Kg7 36.Ng5 Ra8 37.Rf7 Kh8 38.Rh7 Kg8 39.Nf6 Kf8 40.Ne6) 35.Rh7! Rh7 36.Nh7 Nc6 37.Nf6 Kg7 38.Nd5 b3 39.Nd2 (39.Ra6 b2 40.Rb6 Kf7+–) 39...Nd4 40.Nb3! Nb3 (40...Nb3 41.c6 Passed pawn) 41.c6 Nd4 42.c7 g5 (42...Nb5 43.c8Q g5 44.Qd7 Kg6 45.Rg8 Kh5 46.Qh3) 43.c8Q Nf5 (43...Ne2 44.Kf1 Ng3 45.hg3 Kh7 46.Qd7 Kg6 47.Ra6 Kh5 48.Qh3) 44.Ra6 (44.Qd7 Ne7 45.Qe7 Kg6 46.g4 Kh6 47.Ra6) 44...Nh6 (44...Nh4 45.Qd7 Kf8 46.Ra8) 45.Rf6 (45.Qc6 Ng8 46.Qg6 Kh8 47.Ra8 g4 48.Qg8) 45...g4 (45...Ng8 46.Qd7 Kh8 47.Rg6 Nf6 48.Qg7) 46.Qf8 Kh7 47.Qh6 (47.Rh6) 47...Kg8 48.Ne7 (48.Rf8) 1–0. mpopp – samantho, net–chess.com, 2018.

3.Nc3 d5 4.ed5 Nf6 5.Bc4 c6 (5...Nbd7 6.Qe2+=) 6.dc6= Nc6 7.Rb1 0–0 8.Nge2 b6 (8...Bf5 9.0–0=) 9.0–0 Bb7 10.d4 Rc8 11.Bb3 (11.Qd3 e5 12.de5 Qd3 13.Bd3 Ne5=) 11...Nb4+= 12.Ba3 Nbd5 13.Qd3 (13.Nd5 Nd5 14.c4 Nc7+=) 13...Rc3–/+ 14.Nc3 Nf4 15.Qe3 (15.Qd2 Bh6 16.Qe3 Bg2 17.Be7 Qa8–+) 15...Ng2–/+ 16.Qe7 Qc8 17.Nb5?? (better is 17.f4+=) 17...Nf4–+ 18.f3 (18.Qb7 Qb7 19.f3–+) 18...Qg4!! 19.Kf2 (19.fg4 Nh3 Mate attack) 19...Qf3 20.Ke1 Ng2 21.Kd2 Bh6 (21...Bh6 22.Qe3 Qe3 23.Kd1 Qd2) 0–1. Karttunen,M (2445) – Virtanen,A (2330), FIN, SM–Liiga, 2014. (=1.e4 g6 2.b4 Bg7)

3.Nc3 e6 4.Ba3 (4.Nf3 Ne7+=) 4...Ne7 5.Nd5?? (better is 5.Nf3=) 5...Nd5 (better is 5...ed5 6.e5 Be5–+) 6.ed5 0–0 7.b5 Re8 8.d6–/+ Ba1 9.Qa1 c6 10.Qc3 Qg5 11.Bb2 f6 12.Nf3+= Qf5 13.Bd3 Qd5?? 14.Ba3 Qa2 15.0–0 Qd5 16.Bb2? e5?? 17.Bf5 Qd6 18.Be4 Qc7 19.Bd5 Kg7 20.Re1 d6 21.Re4 Qe7 22.Nh4 cd5 23.Nf5 Bf5 24.Rh4 d4 25.Qg3 Nd7 26.c4 Nc5 27.f3 Qe6 28.d3 Nd3 29.Ba3 Qc4 30.Bd6 Qc1 31.Qe1 Qe1# 0–1. sonrisante (1900) – eddieteijeiro (2325), net–chess.com, 2010. (=1.e4 g6 2.b4)

3.d4 c6 4.Nf3 Qb6 5.c3 Nf6 6.e5 Ne4 7.Ng1 Nc3?? 8.Nc3 Qb4 9.Qd3 Na6 10.Bd2 d6 11.Qf3 de5 1–0. themonkey – diener2, GameColony.com, 2002.

3.d4 e6 4.Nf3 Nc6 5.b5 Nce7 6.Be2 c6 7.0–0 Nf6 8.e5 Nfd5 9.c4 Nc7 10.Nc3 cb5 11.cb5 Ned5 12.Ne4 0–0 13.Ba3 Re8 14.Nd6 a6 15.Ne8 Qe8 16.ba6 ba6 17.Qd2 Nb5 18.Bc5 Bb7 19.Rfc1 Ndc7 20.a4 Nd4 21.Bd4 Nd5 22.Rab1 Bc6 23.a5 h5 24.Rc2 Kh7 25.Ng5 Kg8 26.Ne4 Kh7 27.Bc4 Bh6 28.Qd3 Nf4 29.Nf6 Kh8 30.Ne8 Nd3 31.Nc7 Rc8 32.Ba6 Rc7 33.Rb8 Kh7 34.Bd3 Rb7 35.Rb7 Bb7 36.a6 Bc6 37.Rc6 dc6 38.a7 1–0. themonkey (2100) – sbach (1690), GameColony.com, 2002.

3.Nc3 Nc6

4.Ba3 b6 5.Bc4 Bb7 6.b5 Na5 7.Bf7 Kf7 8.Qf3 Nf6 9.Nd5 Rf8 10.Be7 Qe8 11.Bf8 Bf8 12.Nf6 Qe6 13.Nh7 Ke7 14.Ng5 Qe5 15.Qf7 Kd8 16.Qf8 Qe8 17.Nf7 (17...Kc8 18.Qe8#) 1–0. Dorkus – wsx, ICS game chess.net, 1998.

4.Ba3 d6 5.Nge2 Nf6 6.b5 Ne5 7.d4 Nc4 8.Bc1 Nb6 9.Ng3 0–0 10.Be2 Nbd7 11.f4 b6 (better is 11...c5!? 12.bc6 bc6=) 12.e5+/– Ne8 13.Bf3 Rb8 14.0–0 de5 (14...f5!?+/–) 15.fe5+– e6 (better is 15...a6+–) 16.Ba3 Bb7 (16...f6 17.Bg4 f5 18.Bf8 Bf8+–) 17.Bb7 Rb7 18.Qf3 (18...Nd6 19.Nce2+– (< 19.ed6 Bd4 20.Kh1 Qa8+–); < 18.Bf8 Nf8 19.Qd3 f6+–) 1–0. MT – guest401, ICC, 2004.

4.Ba3 Nf6 5.d4 d6 6.Nf3 0–0 7.d5 Ne4 8.Ne4 Ne5 9.Rc1 Bg4 10.Be2 Bh6 11.Rb1 f5 12.Neg5 Nf3 13.Nf3 Re8 14.0–0 Bf4 15.Bb2 Bf3 16.Bf3 e6 17.de6 Qh4 18.g3 Qg5 19.Bb7 Rab8 20.Bc6 Re6 21.Bd5 Rbe8 22.Re1 h5 23.Qd4 Be5 24.Re5 de5 25.Qe5 Qh6 26.Be6 Kh7 27.Qc7 1–0. aspasio – Lazaro7, ICC, 1999.

3.Nc3 d6

4.Bb2 c6 5.Nf3 Nf6 6.Bd3 0–0 7.Qe2 (7.0–0 Qb6 8.a3 a5=) 7...Nh5 8.0–0–0 (better 8.Qe3!?=) 8...Nf4 (8...b5 9.a3–/+) 9.Qf1 (9.Qe3 Nd3 (worse 9...Ng2 10.Qg5+=) 10.Qd3 Qb6–/+) 9...Nd3 (9...b5 10.a3–+) 10.Qd3–/+ a5 (10...Qb6!?–/+) 11.b5=+ Nd7 (11...Qb6 12.Qe3 Qe3 13.fe3 Bc3 14.Bc3 cb5 15.a3=+) 12.bc6 (12.Na4!?=) 12...bc6–/+ 13.h4 (13.Na4 Nf6–/+) 13...Nc5 (13...Rb8 14.Qe3–/+) 14.Qe2 (14.Qe3!?=+) 14...Rb8–/+ 15.Ba3 Ba6 (15...Qb6 16.Qe3–/+) 16.Qe1 (16.Qe3 Ne6–/+) 16...Qb6 17.Qe3 Rb7 (17...Nd7!?–/+) 18.e5=+ Rfb8 19.d4 Ne6 (19...Nd7 20.ed6 ed6 21.h5=+) 20.Kd2? (20.ed6 ed6 21.Bd6=+) 20...c5 (better 20...de5 21.de5 Rd8 22.Kc1 Qe3 23.fe3 Rdb8–/+) 21.Rb1?? (better 21.dc5 dc5 22.Ke1=+) 21...cd4–+ 22.Nd4 Qd4 23.Qd4 Nd4 24.ed6 (24.Rb7 Bh6 (worse 24...Rb7 25.ed6 ed6 26.h5–+) 25.Kd1 Bb7–+ (worse 25...Rb7 26.ed6 ed6 27.h5–+)) 24...ed6 (better 24...Bh6 25.f4 Bf4 26.Ke1 Rb1 27.Kf2 Rh1 28.Nb5 Bb5 29.c4 Bc4 30.g3 Rh2 31.Ke1 Rb1 32.Bc1 Rc1) 25.Bd6 (25.Rb7 Bh6 (worse 25...Bb7 26.Rb1–+) 26.Kd1 Bb7–+ (worse 26...Rb7 27.Re1–+)) 25...Rb1 (better 25...Rd8!? 26.Rb7 Bb7 27.Bc7–+) 26.Nb1 (26.Rb1 Nf3! 27.Kc1 Rb1 28.Nb1 Nh4–+) 26...Rc8 (26...Rd8 27.Be7 Rd7 28.Bg5–+) 27.c3 Nb5 28.Bf4 Nc3 (28...Rc4 29.Be3 Nc3 30.Nc3 Bc3 31.Kd1–+) 29.Nc3 Bc3 30.Kc2 (30.Kd1–+) 30...Be5 (30...Be5 31.Kb3 Bf4–+) 0–1. fishmooney – wvmaniac, net–chess.com, 2017.

4.Bb2 Nc6 5.a3 (5.b5 Nd4=) 5...Nh6 (5...Nf6 6.Bd3+=) 6.Bc4 f5 (6...0–0 7.Nf3=) 7.Qb1 (7.Nf3!?+=) 7...e6+= 8.Nge2 0–0 9.Qa2 Qe7 10.Nf4 (10.b5 Na5 11.Nf4 Nc4 12.Qc4 fe4 13.Qe4 d5 14.Nfd5 Qf7–/+) 10...Nd4–/+ 11.0–0–0 (11.0–0 fe4 12.Nfe2 Ne2 13.Be2–+) 11...fe4–+ 12.g3 Kh8 13.Qa1 e5 (better is 13...d5 14.Ncd5 ed5 15.Nd5 Qe5–+) 14.Nfd5?? (better is 14.Ne4 Bg4 15.Rde1–/+) 14...Qd8–+ 15.Ne3 c6 16.Bf1 (16.Bb3 d5 17.Kb1 Ng4 18.Ng4 Bg4–+) 16...d5 17.Ne2 Ne2 (17...Rf2?! 18.Nd4 ed4 19.Bd4–+) 18.Be2 d4 19.Nc4 (19.Rhf1 de3 20.Be5 ed2 21.Rd2 Qe7–+) 19...Rf2 20.Rde1 Be6 (20...Qd5!? 21.Rhg1 Bg4 22.Bg4 Ng4 23.d3 ed3 24.cd3–+) 21.Na5 Qd7 22.Rhf1 Raf8 23.h4 (23.Rf2 Rf2 24.Nb3 Bb3 25.cb3 e3–+) 23...b6 24.Nc4 (24.Rf2 Rf2 (24...ba5?! 25.Rf8 Bf8 26.Bd1–/+) 25.Nb3 Nf5–+) 24...Rf1 25.Rf1 (25.Bf1 Qf7 26.Kb1–+) 25...Rf1 26.Bf1 Qf7 (26...Qf7 27.Be2 Qf2–+) 0–1. Logvinov,K (2105) – Sargissyan,S (2290), 75th EGU Yelets B, 2014. (=1.e4 g6 2.b4 Bg7 3.Nc3 d6)

4.d4 c5=.

4.d4 Nc6 5.b5 (better is 5.Bb5!?=) 5...Nd4–/+ (< 5...Bd4 6.Qd2 Bc3 7.Qc3+/–) 6.Rb1 c6 7.e5 (better is 7.Bc4!?–/+) 7...Be5–+ 8.bc6 bc6 9.Nf3 (9...Bg4 10.Bb2–+). barry – alexanderthegreat (2000), net–chess.com, 2004.

4.Nge2 Nf6 5.d4 0–0 6.Bb2 c5 7.bc5 Qa5 (better is 7...dc5!? 8.f3 Nc6=+) 8.cd6+= Ne4 9.de7 Re8 10.Qd3 Bf5 (10...Nd6!?+=) 11.Qb5+/– Qb5 12.Nb5 Re7 13.f3 Ng5 (13...Nf6 14.Ba3 Rd7 15.g4+=) 14.Rc1 Nc6 15.h4 Ne6 (15...a6 16.Nd6 Ne6 17.Ba3 Ned4 18.Nf5 Re2 19.Be2+/–) 16.g4 Bc2 17.Rc2 Nb4? (better is 17...a6 18.Nd6 Ned4 19.Bd4 Nd4 20.Rc8 Rc8 21.Nc8 Rc7+/–) 18.Rd2+– a6 (18...Nd5 19.Ba3 Rd7 20.h5+–) 19.Ba3 a5 20.d5 Nf4 (20...Nc5 21.d6 Rd7 22.Kd1+–) 21.Bb4 (21.d6 Nbd3 22.Rd3 Nd3 23.Kd2 Re2 24.Be2 Nb4+–) 21...ab4 22.d6 Re3 (22...Re5 23.g5+–) 23.Kf2 Rd3 24.Rc2 (24.Nf4?! Rd2 25.Ke3 Rd1+–) 24...Rd5 (24...Nd5+–) 25.Nf4 Bd4 (25...Rd1 26.Nd3 Rd8 27.Rc7+–) 26.Kg2 Rb5 (26...Rd6 27.Nd6 Be5 28.Nf7 Bf4 29.Bc4+–) 27.Bb5 Be5 28.d7 Bf4 29.Rc8 (29...Kg7 30.d8Q Rc8 31.Qc8+–) 1–0. Trkn – nestor5 (1915), ICC, 2004.

3.d4 d5

4.e5 f6 5.Nf3 Bg4 6.Bf4 Nc6 (6...Nd7 7.ef6 Ngf6 8.Nc3=) 7.Bb5 Nh6 (7...Qd7 8.h3 Bf3 9.Qf3= (< 9.gf3 0–0–0–/+)) 8.ef6 ef6 9.Bc6 bc6 10.0–0 0–0 11.h3 Bf3 12.Qf3 (< 12.gf3 f5–/+) 12...Nf5 13.Qc3 Qd7 14.Nd2 Nd6 15.Rae1 f5 16.Nb3 Ne4 17.Qd3 Rae8 18.f3 Nf6 (18...Nd6 19.Qa6+=) 19.Nc5+/– Qf7 20.Qa6 Nh5 21.Be5 Be5 (21...f4 22.Qc6 Ng3 23.Rf2+/–) 22.de5 Ng3 23.Rf2 f4 (23...Qg7!? 24.Nd3 Qd7+–) 24.Qc6+– Qe7 (24...d4 25.e6 Qe7 26.Nd7 Qb4 27.c3 Qc3 28.Qc3 dc3 29.Nf8 Kf8 30.Rc2+–) 25.Rd2 Rf5 (25...Nf5 26.Qd5 Kh8 27.e6+–) 26.Rd5 Qh4 (26...Kh8+–) 27.Qe8 Kg7 (27...Rf8 28.Qe6 Kh8+–) 28.Rd7 Kh6 29.Qh8 Ne2 (29...Qe7 30.Re7 Kg5 31.Rh7 Nh5 32.Qd8 Rf6 33.Ne6 Kf5 34.Qd3 Ke6 35.Qd7) 30.Re2 Rh5 (30...Rf6 31.Rh7 Kg5 32.Qf6) 31.Rh7 Kg5 32.Qf6 1–0. lucya (2140) – il_conte (1695), GameColony.com, 2002.

3.d4 d6

4.c3 Nf6 5.Bd3 0–0 6.Nf3 Nc6 7.0–0 e5 8.b5 Na5 9.h3 (9.Nbd2 Re8=) 9...b6 (9...c5 10.bc6 Nc6 11.Bg5=) 10.Bg5+= h6 11.Be3 Ne8 (11...Qe7!?+=) 12.Qd2+/– g5 13.Qe2 f5 14.ef5 Bf5 15.Bf5 Rf5 16.Nbd2 (16.Qd3 Rf8 17.Nbd2 Nf6+/–) 16...Qe7 17.de5 de5 18.Nb3 Nb7 (18...Nd6 19.Na5 ba5 20.c4+/–) 19.Rfd1 Nbd6 20.c4 (20.Rac1 Rf7+/–) 20...a6+/– 21.Rac1 (better is 21.a4+/–) 21...ab5= 22.cb5 Nf6? (better is 22...Qd7 23.Rc6 e4=) 23.g4+/– Rf3 24.Qf3 Rf8? (24...Ra2 25.Qc6 Bf8 26.Nd2+/–) 25.a4 (25.Qc6 Qf7+–) 25...Nfe8? (better is 25...Qe6!? 26.Na1 Rf7+/–) 26.Qd5 Qf7 27.Qf7 Rf7 28.Rd5 (28.Rc6 Re7+–) 28...Kf8 (28...Nf6 29.Rd3 Bf8 30.Kg2+–) 29.a5 ba5 30.Na5 Nf6 (30...Rd7+–) 31.Rd6! (31.Re5?! Ng4 32.Rec5 Ne3 33.fe3 Kg8+–) 31...cd6 32.b6 Re7 (32...Nd7 33.b7 Ke7 34.Rc7+–) 33.b7 Re8 (33...Rb7 34.Nb7 d5+–) 34.Rc7 1–0. drengur1 (2055) – lletram22 (1935), gameknot.com, 2014.

4.c3 Nf6 5.Bd3 0–0 6.Nf3 Bg4 7.0–0 e5 (7...c5 8.bc5 dc5 9.Be3=) 8.de5 de5 9.Qe2 (9.h3 Bc8+=) 9...Nbd7 10.h3 Be6 11.Ng5 Re8 12.Be3 Nh5 13.Ne6 Re6 14.g3 Bf8 15.Nd2 a5 16.a3 Nb6 17.Nb3 ab4 18.ab4 Ra1 19.Ra1 (worse 19.Na1 Rd6 20.Rd1 Na4=) 19...Nd7 20.Bc4 Re7 21.Qf3 Nb6 22.Bb5 c6 23.Be2 Rd7 24.Nc5 (24.Ra5 Bd6+–) 24...Bc5 25.bc5 Nc8 26.Ra8 Kg7 (26...Ng7!?+–) 27.g4+– Nf4 28.Bf4 ef4 29.Qf4 Qc7 30.e5 Rd8 (30...h6 31.Qf6 Kh7+–) 31.Qf6 Kg8 32.Bc4 (32.Bc4 Qe7 33.Qe7 Ne7 34.Rd8 Kg7 35.g5+–) 1–0. marekt – Melendez, ChessWorld.net, 2004.

4.Be2 c5 5.Nf3 +=.

4.Be2 Nf6 5.Nc3 e5 (better is 5...d5!? 6.f3 0–0=) 6.de5+= de5 (6...Nfd7 7.Qd2 Ne5 8.f4=) 7.Qd8+/– Kd8 8.Be3 b6 9.Nf3 Nbd7 (9...Bb7 10.0–0–0 Ke7 11.Bc4+/–) 10.Ng5 (10.Bc4 Ke7 11.Ng5 Bb7 12.Nf7 Rhc8+–) 10...Ke7 (10...Rf8 11.Bc4 Ke7 12.Nd5 Nd5 13.Bd5+/– (worse is 13.ed5 h6 14.Nf3 e4+=)) 11.Bc4 Bb7 12.Nf7 (worse is 12.Bf7 h6–/+) 12...Rhf8 13.Ng5 h6 (13...c5 14.b5 a6+–) 14.Ne6 Ne4 (14...Rg8 15.f3+–) 15.Ne4 (15.Ng7?! Nc3 16.Bh6 Bg2=) 15...Be4 16.f3 Bc2 (16...b5 17.Nf8 (17.fe4?! bc4 18.Nf8 Bf8+–; 17.Ng7?! bc4 18.fe4 Rh8+–) 17...Bf8 18.Bb5+– (18.fe4?! bc4 19.Ke2 Ke6+–)) 17.Ng7 b5 (17...Rh8 18.Rc1 Ba4 19.0–0+–) 18.Bb5 Rf7 (18...Rab8 19.a4 Bb3 20.Bh6+–) 19.Rc1 a6 (19...Rb8 20.Bd7 Kd7 21.Rc2 Rg7 22.Bh6+–) 20.Bc6 Rd8 (20...Rb8 21.Rc2 Rg7 22.Kf2+–) 21.Bh6 Bd3 (21...Rh8 22.Bg5 Kd6 23.Rc2 Rg7 24.Kf2+–) 22.Bd5 Rg7 (22...c5 23.bc5 Nf6 24.Bf7 Kf7 25.c6+–) 23.Bg7 1–0. chpot (1935) – marinscrofan (1740), gameknot.com, 2014.

4.Nf3 c5 5.c3 cb4 6.Qa4 Bd7 7.Qb4 Nf6 8.Qb7 Bc6 9.Bb5 Qb6?? (Better is 9...Bb5 10.Qb5 Nbd7+/–) 10.Qc8+– Qd8 11.Bc6 Nc6 12.Qc6 Kf8 13.e5 de5 14.Ne5 Nd5 (14...Rc8 15.Qf3 Qd5+–) 15.Nd7 Kg8 16.Qd5 e6 17.Qb7 h5 18.Bf4 Kh7 19.Nd2 e5 20.Be5 Be5 21.Ne5 Qe8 22.Ne4 Rf8 23.Nf6 1–0. Trkn – guest559, ICC, 2004.

4.Nf3+= c5 5.c3 cd4 6.cd4 Nc6 (6...Nf6 7.Nc3+=) 7.b5 Nb8 (7...Na5 8.Nc3+=) 8.Nc3 (8.Bc4 Nf6 9.Nbd2 d5 10.ed5 Nd5+=) 8...e6 (8...Nf6 9.Bd3+=) 9.Bd3+/– Nd7 10.0–0 Ne7 11.a4 (11.Bf4 Nb6+/–) 11...e5 (11...0–0 12.Bg5+/–) 12.Be3 (12.Bg5 ed4 13.Nd5 f6+=) 12...0–0 13.de5 (13.Rc1 f5+/–) 13...Ne5 14.Ne5 Be5 15.Rc1 d5 16.Bc5 d4 (16...de4 17.Be4 Qd1 18.Rfd1+/– (18.Rcd1?! Bc3 19.Be7 Re8=)) 17.Ne2 (17.f4 Bd6 18.Bd4 Bf4 19.Rf4 Qd4 20.Kh1+=) 17...Bd6 (better is 17...b6!? 18.f4 Bg7+/–) 18.Bd4+– Bg4 19.Qd2 Be2 20.Be2 (20.Qe2?! Bh2 21.Kh2 Qd4+/–) 20...Be5 21.Rfd1 Qd4 22.Qd4 Bd4 23.Rd4 b6 24.Rc7 Rfe8 25.Rdd7 Kf8 26.f4 Rad8 27.Ra7 Rd7 28.Rd7 Ra8 29.Bd1 Rc8 30.Bf3 Ra8 31.Rb7 f5 32.Rb6 Ra4 33.Rb8 Kf7 34.ef5 Nf5 35.b6 Ra1 36.Kf2 Rb1 37.b7 Rb2 38.Ke1 Nd6 39.Rh8 Nb7 40.Rh7 Kf6 41.Rb7 Rb7 42.Bb7 Kf5 (42...g5 43.fg5 Kg5 44.h3+–) 1–0. Woelfelschneider,Peter – Nittschalk,Karl, T4–32.06 ETC, 2003.

4.Nf3+= c5 5.bc5 dc5 6.c3 cd4 7.Nd4 Nf6 8.Bb5 Bd7=.

4.Nf3+= Nf6 5.Bd3=.

4.Nf3 Bg4 5.Bc4 Nc6 6.Bf7 (better is 6.c3+=) 6...Kd7?? (better is 6...Kf7 7.Ng5 Ke8 8.Qg4 Nd4+=) 7.c3+– Nf6 (7...Kc8+–) 8.e5 Nh5 9.d5 Ne5 (9...Nb8 10.h3 Bf3 11.Qf3 Kc8+–) 10.Ne5 (10.Ne5 Kc8 11.Qg4 Kb8 12.Nd7 Kc8 13.Nf6 Kb8 14.Nh5 Bc3 15.Nc3+–) 1–0. slihuatamanio – seba2602, playok.com, 2012.

2.Nf3 Bg7

3.c3 a5 4.b5 b6 (4...d5 5.e3=) 5.Bb2 Bb7 6.e3 c6 7.d4 cb5 8.Bb5 Nf6 9.0–0 0–0 10.Nbd2 Ne4 11.Be2 a4 12.Ne4 Be4 13.a3 Qc7 14.Rc1 Ra5 15.c4 Rh5 16.g3 d6?? (better is 16...Ra5+=) 17.Nd2+– (17.Qa4?! Ra5 18.Qb3 Nd7+/–) 17...Ba8 18.Bh5 gh5 19.Qh5 Qd7 20.Bc3 f5 21.d5 Rf6 22.Bf6 ef6 23.Nf3 Na6 24.Nh4 f4 25.ef4 Nc5 26.Nf5 Bb7 27.Qg4 Bc8 28.Rce1 Qf5 29.Qf5 Bf5 30.Re7 Bf8 31.Ra7 Bd3 32.Re1 Bc4+/– 33.Re8 Bd5 34.h4 Bf7 35.Rd8 d5 36.Raa8 Kg7? 37.Rf8 d4 38.Rfd8 d3 39.Kh2 Kg6 40.Rab8 Be6 41.Rb6 Bg4 42.Rdd6 Kf5 43.Rf6 Ke4 44.Rbc6 Kf3 45.Rc5 Kf2 46.Rd6 d2 47.Rd2 (47.Rd2 Ke3 48.Rd8 Kf3 49.f5 Ke4 50.Rc4 Kf5 51.Rf4 Ke6 52.Rg4 Ke7 53.Rh8 Ke6 54.Rh7 Kd6 55.Rg6 Kd5 56.Rg5 Kd6 57.Rh6 Ke7 58.Rg7 Kf8 59.Ra7 Kg8 60.g4 Kf8 61.Rh8#) 1–0. decembernight – motlajs, playok.com, 2011. (=1.Nf3 g6 2.b4)

3.c3 Nc6 4.h3 (4.b5!? Nb8 5.e4=) 4...Nb4=+ 5.Ba3 (5.d4 Nc6=+) 5...Nc6–/+ 6.e3 a6 7.d4 b6 (7...Nf6 8.Bd3–/+) 8.Nbd2 Bb7 9.Bc4 (9.e4 Nf6=+) 9...d5 10.Bd3 (10.Bb3 e5=+) 10...Nf6 (10...e5 11.Be2–/+) 11.0–0 0–0 12.g4 (12.Rb1 Re8–/+) 12...Re8 13.Ne5 (better 13.g5!? Nh5 14.Qc2–/+) 13...Ne5–+ 14.de5 Ne4 15.Ne4 (15.f4 Nc3 16.Qb3 Nb5–+) 15...de4 16.Be4? (16.Be2 Be5 17.Bb2–+) 16...Be4 17.c4 (17.Qd4 Bf3–+) 17...Be5 18.Rc1 c5 19.Qd8 Red8 20.Rfd1 (20.f3 Rd3 21.Bc5 bc5 22.fe4 Re3–+) 20...Kg7 (better 20...Bf3 21.Rd8 Rd8 22.Rf1–+) 21.f4 Bc7 22.Kf2 Rd3 23.Rd3 Bd3 24.h4 Rd8 25.Bb2 f6 26.h5 (26.Kf3 h5 27.gh5 gh5–+) 26...gh5 27.gh5 Kh6 28.Kf3 Kh5 29.e4 e5 (better 29...f5 30.ef5 Bf5 31.Rh1 Kg6 32.Rg1 Kf7–+) 30.f5 Be4! 31.Ke4 Rd2 32.Rb1 (32.Rh1 Kg4 33.Rg1 Kh4 34.Rh1 Kg3 35.Rh7 Bd8–+) 32...Kg4 (32...Rg2 33.Kd5–+) 33.a4 (33.Rg1 Kh3 34.Rg7 Bd8–+) 33...h5 (better 33...Re2 34.Kd3 Rg2–+) 34.Bc1 (34.Rg1 Kh3 35.Rg7 Rb2 36.Rc7–+) 34...Rd1 (34...Rd4!? 35.Ke3 Rc4 36.a5–+) 35.a5 ba5 36.Rb7 Re1 (better 36...Rc1 37.Rc7 Rc4 38.Kd5 Rf4–+) 37.Be3 Bd6 38.Rb6 Bf8 (better 38...Rd1 39.Ra6 h4–+) 39.Rf6–/+ Be7 40.Rg6 Kh4 (better 40...Kh3–+) 41.Re6?? (41.f6 Bf8 42.Kf3=) 41...Bg5–+ 42.Ke5 (42.Ra6 Be3 43.Ke5 Bd2 44.Kd5–+) 42...Re3 43.Kd6 Re6 44.Kc5 Re5 45.Kb6 Rf5 46.Ka6 Rc5 47.Kb6 (47.Kb7 a4 48.Kb6 Be3 49.Ka6 a3 50.Kb6 a2 51.Kb7 a1Q 52.Kb6 Rc4 53.Kb5 Qa4) 47...Rc4 (47...Be3 48.Kb7 a4 49.Ka6 a3 50.Kb6 a2 51.Kb7 a1Q 52.Kb6 Rc4 53.Kb5 Qa4) 48.Ka5 Kg4 49.Kb5 Rc1 50.Kb4 h4 51.Kb3 h3 52.Kb2 h2 53.Kb3 (53.Ka3 h1Q 54.Kb3 Qb7 55.Ka2 Bf6 56.Ka3 Ra1) 53...h1Q 54.Kb2 (54.Ka3 Qf3 55.Ka4 Rb1 56.Ka5 Qa8) 54...Qb7 55.Ka2 Rc8 56.Ka3 Ra8 0–1. valerypavlovich – vitorcosta, net–chess.com, 2018.

3.c3 d5 4.Bb2 Bg4 5.e3 Nf6 6.Be2 Nc6 7.d4 Bh6 8.0–0 Ne4 9.h3 Bf3 10.Bf3 Ng5 11.Be2 0–0 12.Nd2 Qd7 13.Nf3 Ne4 14.Bd3 f5 (14...Qe6 15.b5 Na5 16.Qa4+=) 15.b5 Nd8 16.Ne5 Qd6 17.a4 Bg7 18.Ba3 Qe6 19.Nf3 Nc3 (19...c5!?=) 20.Qc2+/– Ne4 21.Qc7 Rc8 (21...Bf6+/–) 22.Qf4 (better is 22.Qe7!? Re8 23.Qe6 Ne6 24.Rfc1+/–) 22...Rc3 23.Be4 (23.Rfd1!?=) 23...fe4+= (worse is 23...de4 24.Ne5+=; worse is 23...Qe4 24.Qb8 Bf6 25.Qa7+/–) 24.Ng5 Rf4 25.Ne6 Ne6 26.Be7? (better is 26.ef4 Nf4 27.Bc5+=) 26...Rf7–+ 27.Bb4 Rb3 28.Ba3 Rc7 29.Rfc1 Rc4 30.Rc4 dc4 31.a5 Rc3 32.Bc5? Rc2 33.Ba7 Nc7?? 34.b6?? Nb5?? 35.Bb8?? Nc3 36.a6 ba6 37.Ra6 Rb2 38.Bc7? Nd5 39.Ra8 Kf7 40.Ra7 Ke6 41.b7 Nc7 42.b8Q Rb8 43.Rc7 Bf6 44.Rc4 Kd5 45.Rc5–/+ Kd6 46.g3 Rb1 47.Kg2 Rb2 48.h4 g5 49.hg5= Be7 50.Re5+= Bd8 51.Re4 Bg5 52.Re8 Kd7 53.Re5 Bf6? 54.Re4?? Bg5 55.Kf3 Kd6 56.Kg4 h6 57.f4+– Bf6 58.Kf5 Bd8 59.Re6 Kd5 60.Rh6 Rg2 61.g4 Rg3 62.e4 Kd4 63.Rd6 Ke3 64.Rd8 Rf3 65.g5 Rf4 66.Kg6 Re4 67.Kg7 Rg4 68.g6 Ke4 69.Rf8 Ke5 70.Rf7 Ke6 71.Rf1 Ke7 72.Rf7 Ke8?? 73.Rf5 Ke7 74.Kh6 Ke6 75.Rf1 Rh4 76.Kg5 Rh2 77.g7 Rg2 78.Kh6 Rh2 79.Kg6 Rg2 80.Kh7 Rh2 81.Kg8 Rg2 82.Kf8 Rg7 83.Kg7 Ke5 84.Kg6 Ke4 85.Kg5 Ke3 86.Kg4 Ke2 87.Rf3 Ke1 88.Ra3 Kd2 89.Kf3 Kc2 90.Ke3 Kb2 91.Rd3 Kc2 92.Ke2 Kc1 93.Rd2 Kb1 94.Kd3 Kc1 95.Kc3 Kb1 96.Kb3 Kc1 97.Kc3 Kb1 98.Rd4 Ka2 99.Kc2 Ka3 100.Kc3 Ka2 101.Rb4 Ka3 102.Rb8 Ka4 103.Kc4 Ka5 104.Kc5 Ka6 105.Rb5 Ka7 106.Kc6 Ka8 107.Kc7 Ka7 108.Ra5 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013. (=1.Nf3 g6 2.b4 Bg7)

3.c3 e6 4.Bb2 (4.e4 Nf6 5.e5 Nd5+=) 4...Ne7 5.d3 d5 6.Nbd2 a6 7.e3 Nbc6 8.Be2 (8.Rb1 e5=) 8...Bd7 (8...Nb4 9.d4 Nbc6 10.0–0+=) 9.0–0 0–0 10.Rc1 (10.Rb1 e5=) 10...b5 (10...Nb4!? 11.Qb3 Nbc6+=) 11.Qc2= e5 12.a4 Na7 (12...ba4 13.Ra1=) 13.ab5 ab5 14.c4 bc4 15.dc4 c6? (15...Bf5 16.Qc3+=) 16.cd5 (16.Be5 Be5 17.Ne5 Bf5+–) 16...cd5 (16...Nd5!? 17.Be5 Nb4+/–) 17.Ne5 Rc8 18.Qb1 Rc1 19.Rc1 Bf5 20.Qa1 Nb5?? 21.Ndf3 d4 22.Bb5 Be5 23.Ne5 de3 24.fe3 f6 25.Nd7! Bd7 26.Rd1 Qb6 27.Bd7 Qe3 28.Kh1 f5 29.b5 Qb6 30.Bh8 Rf7 31.Re1 Kf8 32.Be6 Qb5 33.Bf7 Kf7 34.Qf6 Ke8 35.Qe7# 1–0. decembernight – lenkahb2, playok.com, 2011. (=1.Nf3 g6 2.b4).

3.Nc3 c6 4.Bb2 d5 5.a4 e5 6.Ra3 Nh6 7.Qa1 d4 8.Nd1 a5 9.b5 c5 10.d3 0–0 11.c3 Bg4 12.cd4 ed4 13.e3 Bf3 14.gf3 Nf5 15.Bh3 (15.Ke2 Re8 16.Bh3 Nh4–/+) 15...Nh4 (better is 15...Ne3 16.fe3 Qh4 17.Ke2 Qh3–+) 16.f4? (better is 16.Ke2–/+) 16...Qd5–+ 17.e4 (17.Rg1 Nf3 18.Kf1 Nh2 19.Ke1 Nf3 20.Kf1 Ng1 21.Kg1–+) 17...Qh5 18.0–0 (18.Ne3 Qf3 19.Rf1 Qh3 20.Nd5–+) 18...Qf3 19.Ne3 Qh3 20.Kh1 de3 21.Rg1 Qf3 22.Rg2 Qg2 0–1. Feldstein,Robert – Hahn,David, Monroe ch–MI op, 1986. (=1.Nf3 g6 2.b4)

3.Nc3 Nc6 4.b5 Na5 5.e3 b6 6.d4 a6 7.a4 e6 8.Bd3 Bb7 9.0–0 e5? (better is 9...Nf6+=) 10.ba6 Bf3 11.Qf3 ed4?! (11...Ne7 12.Rb1 0–0+–) 12.Nb5 de3 (12...Ra6 13.ed4 Ne7+–) 13.Nc7! Qc7 14.Qa8 Ke7 15.Ba3 d6 16.Rae1 Nc6 (16...Kd7 17.a7 Nc6 18.Re3 Nge7 19.Qh8 Bh8+–) 17.Re3 Be5 18.f4 Nh6 19.Qh8 (19.Qh8 Qd8 20.Qh7+–) 1–0. BlackDemon (2605) – WhiteDrago, FICS rated standard game, 2013.

3.Nc3 f5 4.Bb2 Nf6 5.g3 (5.e3 0–0=) 5...0–0 6.Bg2 c6 (6...Nc6 7.b5 Na5 8.d3=) 7.0–0+= d6 8.d3 (8.Ng5 e5+=) 8...Nh5 (8...Na6 9.a3=) 9.e4 (9.Qd2 Na6 10.b5 cb5+=) 9...Na6+= 10.Qe2 (10.a3!?+=) 10...Nb4= 11.a3 (11.Rab1 c5=) 11...Na6 12.Rae1 (12.d4 Nc7=) 12...b5 (12...e5 13.ef5 Bf5 14.Ne4+=) 13.ef5= Bf5 14.Qe7 (14.Nh4 Bd7=) 14...Qe7 15.Re7 b4 16.ab4 Nb4 (better is 16...Bf6 17.Re2 Nb4=) 17.Rc1?? (17.Nh4!?+=) 17...a5?? (better is 17...Bc3 18.Bc3 Nd5–+) 18.Na4 Bb2 19.Nb2 Nd5 20.Rb7 Nc3 21.Re1 Rae8 22.Ree7 Re7+= 23.Re7 Ng7 24.Nd4 c5 25.Nf5 Nf5+= 26.Ra7 a4 27.Na4+= Na4 28.Ra4 Nd4 29.Bd5 Kg7 30.Ra7 Kh6 31.Rd7 Nc2 32.Rd6 Nd4 33.Be4 Nf3 34.Bf3 Rf3+/– 35.Kg2 Rf5 36.Rc6 Rd5+= 37.h4 Kh5 38.Rc7 h6?? 39.Kh3 g5+= 40.Rg7 Rd3= 41.hg5 hg5 42.Rh7 Kg6 43.Rc7 Rd5 44.Kg4 Rd4 45.f4 gf4 46.gf4 c4 47.Rc6 Kg7 48.Kg5 Kf7 49.f5 1–0. gbsrao (2125) – miodrag (2125), net–chess.com, 2007. (=1.Nf3 g6 2.b4)

3.d4 b6 4.e4 c5 5.c3 Bb7 6.bc5 bc5 7.Nbd2 cd4 8.cd4 Nf6 9.Bd3 0–0 10.Rb1 Qc8 11.Ba3 Ba6 12.Qe2 Bd3 13.Qd3 d5 (13...d6!?+/–) 14.Be7+– de4 15.Ne4 Re8 16.Bf6 (16.Nf6? Bf6 17.0–0 Re7–+) 16...Bf6 17.0–0 Qe6 18.Rfe1 Nd7 19.Qb5 Red8 20.d5 Qf5 21.Nd6 Qc2 22.Nb7 Rab8 23.Qc6 Qa2?! (23...Qf5 24.Rb3 Rbc8+–) 24.Nd8 Qb1 25.Qd7 Bd8 26.Qd8! Rd8 27.Rb1 Rd5 28.h4 h6 29.g4 a5 30.Rb8 Kg7 31.Kg2 g5 32.Kg3 gh4 (32...Kg6 33.Rb6 Kg7 34.Ra6+–) 33.Nh4 h5 34.Nf5 Kh7 35.Rb7 Rd3 36.Ne3 hg4 37.Rf7 Kg6 38.Ra7 Ra3 39.Kg4 Kf6 40.Ra6 Kf7 41.Nd5 Ra1 42.Kf5 a4 43.f4 a3 44.Nc3 Kg7 45.Nb5 a2 46.Nc3 1–0. Teske,Henrik (2475) – Danner,Georg (2385), AUT–chT, 1998. (=1.Nf3 g6 2.b4 Bg7)

3.d4 c6 4.Bf4 a5 5.a3 (5.ba5 Nf6=) 5...ab4=+ 6.Bb8 Rb8 (6...d6 7.c3=+) 7.ab4= Qb6 8.c3 Nf6 9.Nbd2 0–0 10.e4 d6 11.Be2 Qc7 12.0–0 b6 13.Qa4 Bb7 14.Qb3 e6 15.Ra7 Ra8 16.Rfa1 Ra7 17.Ra7 Ra8 18.Ra8 Ba8 19.Qa2 Qb8 20.c4 Bb7 21.Bd3 Nd7 22.d5 (better 22.Nb3!?=) 22...cd5–/+ 23.cd5 ed5 24.ed5 Nf6 25.Bc4 Qa8 26.b5 Qa2 27.Ba2 Bd5 28.Bd5 Nd5 29.Nc4 Bf8 30.Nd4 Be7 (30...Nc3 31.Nb6 Bg7 32.Nc6 Nb5 33.g4–/+) 31.g3 (31.Nc6!? Kf8 32.Na7=+) 31...Kf8 32.Kf1 Ke8 33.Ke2 Kd7 34.Kd3 Bd8 35.Ne3 Nc7 (35...Ne3 36.fe3 Bf6 37.Nc6–/+) 36.Kc4 Bf6 37.Ne2 (37.Nc6=+) 37...Bd8 38.Nd5 (38.Nd4 h6=+) 38...Ne8 (38...Nd5!? 39.Kd5 Bf6=+) 39.Nd4= h6 40.Nc6 Bc7 41.g4 Ng7 42.f4 Ne6 (42...Ne8!?=) 43.f5+– gf5 44.gf5 (44.Nf6!? Kc8 45.Ne7 Kb7 46.Nf5 d5 47.Kd5 Bh2 48.Nh6 Nc7 49.Kc4+–) 44...Ng7= 45.Nf6 Kc8 46.Ne7 Kd8 (46...Kb7 47.Ne4=) 47.Nfd5+= Kd7 48.f6 Ne8 49.Ng8 (49.Nf5 Bd8 50.Nh6 Ke6+=) 49...Bd8 (49...h5=) 50.h3 (50.Nh6 Ke6+=) 50...Ke6 (50...h5!?–/+) 51.Nh6= Nf6 52.Nf4 Ke5 53.Nf7 (better 53.Ne2!? d5 54.Kd3=) 53...Kf4–/+ 54.Nd8 Ke4 (54...Ke3 55.Nc6 d5 56.Kc3 Ne4 57.Kc2=+) 55.Nf7 (55.Nc6 d5 56.Kc3 Ke3=+) 55...d5 56.Kb3 (56.Kc3 d4 57.Kd2 Kd5=) 56...Kd4 57.h4 Kc5 58.Ka4 Kc4 (58...d4 59.Ne5–/+) 59.Nd6 Kc3 60.Ka3 d4 61.Nc8 Nd7 62.h5 d3 63.Nd6?? (63.h6 d2 64.h7 d1Q 65.h8Q Kc4=) 63...Kd4 (better 63...Nf6 64.Nf5 Nh5–+) 64.Kb2=+ Kc5 (better 64...Ne5 65.Nf5 Ke4=) 65.h6+– Nf8 66.Ne4 Kb5 67.Kc3 Kc6 68.Kd3 Kd5 69.Ke3 Ke5 70.Kf3 Kf5 ½–½. Bulcourf,C (1970) – Acosta,Ra (2055), Buenos Aires ARG (8), 2018. (=1.Nf3 g6 2.b4 Bg7)

3.d4 Nc6 4.d5?? Nb4?? (better 4...Ba1 5.dc6 dc6 6.Qd8 Kd8–+) 5.Bf4?? (better 5.c3=+) 5...Ba1–+ 6.Na3 (6.c3 Na6–+) 6...Bc3 (6...Bg7!? 7.Qd2 Na2 8.Be5 Be5 9.Ne5–+) 7.Bd2 Nd5 (better 7...Bd2 8.Qd2 c5 9.c3–+) 8.e4 (8.Bc3 Nc3 9.Qd4–+) 8...Bd2 9.Qd2 Ndf6 10.Bd3 d5 (10...d6 11.0–0–+) 11.e5 Ne4 (11...Nh5 12.Be2–+) 12.Qe3 (12.Be4 de4 13.Qd8 Kd8–+) 12...f5 (12...c6 13.0–0 Qb6 14.Qc1–+) 13.Nb5 (13.0–0 c5–+) 13...c6 14.Nd6 (14.Nbd4 Qa5 15.Nd2 Qc3–+) 14...ed6 15.0–0 de5 16.a4 (16.Ne5 Ngf6–+) 16...f4 (16...Qe7!? 17.c4–+) 17.Qe2 (17.Qc1–+) 17...Nc3 (better 17...Ngf6 18.Ne5 0–0–+) 18.Qe5 Ne7 (better 18...Be6! 19.Qh8 Qf6 (worse 19...Na4 20.Re1 Kd7 21.Qh7 Qe7 22.Qg6–+) 20.Qh7 Ne7–+ (20...Na4?! 21.Qb7 Nb6 22.Qc6 Kd8 23.Re1–+)) 19.Qh8=+ Kd7 20.Qc3 Qc7 (20...Kc7!?=+) 21.Re1 a6? (better 21...Qd6+=) 22.Ne5 Kd6?? (22...Ke8 23.Bg6 hg6 24.Ng6 Kf7 25.Re7 Qe7 26.Ne7 Ke7 27.Qe5 Kd8+–) 23.Qb4 (23.Nf7 Kd7 24.Qf6 Ke8 25.Nd6 Qd6 26.Qd6 Be6 27.Qe6 Kf8 28.Qf6 Kg8 29.Re7 Re8 30.Re8) 23...c5 24.Qf4 c4 (24...Be6 25.Qf6 c4 26.Nc4 Kc5 27.Qe6+–) 25.Nc4 (better 25.Ng6 Kc5 26.Qc7 (26.Re7?! Qf4 27.Nf4 cd3 28.Nd3 Kd4+–) 26...Nc6 27.Ne7+–) 25...Kc5 (25...Kc6 26.Qf6 Kc5 27.Re7 Qc6+–) 26.Qc7 Kd4 27.Re4! Kc3 (27...de4 28.Qe5 Mate attack) 28.Re7 (28.Qa5) 28...Kb4 (28...dc4 29.Qc4 Kb2 30.Qb4 Ka2 31.Bc4 Ka1 32.Re1) 1–0. inprpe007 – lucifer_666, gameknot.com, 2018. (=1.Nf3 g6 2.b4 Bg7)

3.d4 e6 4.c4 Ne7 5.Bb2 0–0 6.e3 b6 7.Be2 Bb7 8.0–0 c5 9.Qb3 cb4 10.Qb4 Nbc6 11.Qd2 d5 12.cd5 Nd5 13.Nc3 Na5 14.Nd5 Bd5 15.Bc3 Nc6 16.Rfc1 Rc8 17.a4 a5 18.Rab1 Re8 19.Bb5 Bf8 20.Bc6 Rc6 21.Ne5 Rc8 22.Nd3 Bc6 23.Qa2 Qd7 24.Ne5 Qe7 25.Nc6 Rc6 26.Bd2 Qc7 27.Rc6 Qc6 28.Qb3 Rc8 29.h4 Be7 30.Qb6 Qa4= 31.Qa5 Qa5 32.Ba5 Bh4 33.g3 Be7 34.Kg2 Ra8 35.Bc7 Ra2 36.Be5 f6 37.Bf4 Kf7 38.Rb7 g5?? 39.Bd6+– Kg6 40.Be7 f5 41.Bd8 h5 42.Re7 f4 43.Re6 Kf7 44.Rf6 Ke8 45.gf4 Kd8 46.fg5 Ra5 47.f4 Ra2 48.Kf3 Ke7 49.Rh6 Rh2 50.Rh5! (50.Rh5 Rh5 51.e4+–) 1–0. bluepiramid2 (1685) – fakazer (1630), playok.com, 2012. (=1.Nf3 g6 2.b4)

3.c3 b6

4.a4 Bb7 5.Ra2 c6 (5...a5 6.b5=) 6.Bb2 Qc7 7.d4 d6 8.Nbd2 Nd7 9.e3 b5? (better is 9...Ngf6!?=) 10.ab5+/– cb5 11.Be2 (11.Bb5 Ngf6+/–) 11...Nb6? (11...a6 12.c4+=) 12.0–0 Na4?? The backward pawn on c3 becomes a target 13.Ba1 a5?? 14.Rc2 ab4 15.cb4 Qd7+/– 16.Nb3 Bd5+= 17.Na5 Ra5?? 18.ba5+– Bb3 19.Qd2 Bc2 20.Qc2 e6 21.Qb3 Ne7 22.Bb5 Nc6 23.Rc1 0–0 24.Ba4 Qc7 25.Rc6 Qa5 26.Bc3 Qa8 27.h3 Rb8 28.Qc4 Bf8 29.d5 ed5 30.Qd5 Qa4 31.Ng5 Rb5 32.Qf7# 1–0. decembernight – wieslaw2325, playok.com, 2011. (=1.Nf3 g6 2.b4)

4.d4 Bb7 (4...Nf6 5.Bf4=) 5.Bg5 Nf6 (5...a5 6.b5=) 6.Bf6 (6.Nbd2 Bf3 7.Bf6 Bf6 8.Nf3 d5=) 6...Bf6 7.Nbd2 d5 8.e3 c5 (8...Nd7 9.Be2=) 9.Bb5 (9.bc5 bc5 10.Rb1 Qc7+=) 9...Nd7 (9...Bc6 10.Bc6 Nc6 11.b5=) 10.Qa4 (10.bc5 bc5 11.Rb1 cd4 12.cd4 0–0+=) 10...a6= 11.Bc6 (11.Bd7 Qd7 12.Qd7 Kd7 13.bc5 bc5=) 11...b5 12.Bd7 Qd7 13.Qc2 cb4 (13...cd4 14.cd4 Rc8 15.Qb2=) 14.cb4 Rc8 15.Qd3 Qd6 16.a3 0–0 17.Nb3 Rc4 (17...Rc7 18.Nc5=) 18.Nc5+= Bc8 (18...Qc6 19.Rd1= (worse 19.Nb7 Qb7 20.h4 Rfc8=+)) 19.Nd2 Bf5 (19...e5 20.Nc4 bc4+=) 20.Qe2 (20.Nc4 dc4 21.Qd2 Qd5+–) 20...Rc2 (20...Rc3 21.0–0=) 21.Rd1 (21.g4 Bc8+=) 21...e5 (21...Ra2!?=+) 22.g4+= Bc8 23.g5 (23.Qd3 Rd2 24.Rd2 Bg4+=) 23...Bg7 (23...Bg5 24.h4 Bh6–/+) 24.Rg1?? (better 24.Qd3 Rc4 25.Nc4 dc4 26.Qe4=) 24...ed4–+ 25.Qd3 (25.Rg2–+) 25...Rc3 (25...Qh2 26.Rg3 de3 27.Re3 Qg1 28.Qf1 Qg5 29.Re2–+) 26.Qe2 Qh2 (better 26...Ra3 27.Rg3 de3 28.Re3 Ra2–+) 27.Nf3–/+ Qd6 (better 27...Qh3 28.Nd4 Re8–+) 28.Kd2?? (better 28.Nd4 Re8 29.Rg2–/+) 28...Ra3–+ 29.ed4 (29.Ke1 de3 30.fe3 Bc3 31.Kf2 Re8–+) 29...Bf5 (29...Ra2 30.Ke1 Re2 31.Ke2 Re8 32.Ne5 Be5 33.Kf3–+) 30.Ne5 (30.Ke1–+) 30...Ra2 31.Ke3 Ra3 32.Kf4?? (32.Kd2 f6 33.Ra1 Ra1 34.Ra1 fe5 35.Ra6–+) 32...f6–+ 33.Qe3 fe5 34.de5 Be5 (34...Bc8 35.Kg3 Re3 36.Kg2 Qe5 37.Rd4 Qf5 38.Rh4 Qf2 39.Kh1 Qh4 40.Kg2 Rf2) 35.Qe5 Be4 (35...Be6) 36.Kg4 Qe5 (36...Qe5 37.Rg3 Bf5 38.Kh4 Qf4 39.Rg4 Qg4) 0–1. mordor1 (2275) – FeegLood (2455), Time forfeit, 2015. (=1.Nf3 g6 2.b4 Bg7)

3.c3 d6

4.e3 Nf6 5.Be2 0–0 6.0–0 Nbd7 7.Bb2 Nb6 8.a4 e5 9.a5 Nbd5 10.Na3 Nd7 11.Qc2 f5 12.Rac1 e4 13.Nd4 Kh8 14.Rfd1 Qe7 15.Nab5 N7f6 16.Bf1 a6 17.Na3 Ng4 18.h3 Ne5 19.Ne2 f4 20.ef4 Nf4 21.Nf4 Rf4 22.d4 Nf3 23.Kh1 Ng5 24.Qd2 Nh3 25.gh3 Bh6 26.Qe2 Bh3 27.Bh3 Qh4 28.Kg2 Rf3 Black intends e3 29.Rh1 Raf8 30.Rcf1?? e3 31.fe3 Qg3# 0–1. ricardow71 – pizecik, playok.com, 2012. (=1.Nf3 g6 2.b4)

4.e3 Nf6 5.Be2 0–0 6.0–0 e5 7.d3 a5 8.Nbd2 (better is 8.b5!?=) 8...ab4–/+ 9.cb4 Bg4 (9...e4!? 10.Nd4 c5–/+) 10.d4 e4 11.Ne1 Be2 12.Qe2 Nc6 13.a3 (13.Nc2 Re8=) 13...Nd5 (13...Nb4!? 14.Qb5 c5+=) 14.Ne4 Re8 15.Nd3?? (better is 15.Qf3 Ndb4 16.Nc3=) 15...Re4–+ 16.Bd2? Re8 17.Rfc1?? Nd4! 18.ed4 Re2 (18...Re2 19.Rd1 Qh4–+) 0–1. decembernight – riz, playok.com, 2012. (=1.Nf3 g6 2.b4)

3.c3 Nf6

4.Bb2 0–0 5.e3 d6 6.Bc4 c6 7.0–0 d5 8.Bb3 Bg4 9.d4 a6 10.Nbd2 Nbd7 11.Qc2 Bf3 12.Nf3 Qc7 13.Rac1 Rab8 14.a3 Qc8 15.c4 dc4 16.Bc4 e6 17.Qd3 Qd8 18.Rfd1 Nb6 19.Bb3 Nbd5 20.Ne5 Nd7 21.e4 N5f6 22.Qf3 Qe7 23.d5 Ne5 24.Be5+– Rbd8?? 25.d6 Qd7 26.Bf6 Bf6 27.Qf6 h5 28.e5 Rc8 29.Bc2 c5 30.Be4 b5 31.bc5 Qd8 32.Qf4 Qa5 33.c6 Qa3 34.d7 Rcd8 35.c7 Rd7 36.Rd7 Rc8 37.Rd8 Rd8 38.cd8Q (38.cd8Q Qf8 39.Rc7 f5 40.Qh6 Qd8 41.Qg7#) 1–0. ursus11 – czarny555, playok.com, 2012. (=1.Nf3 g6 2.b4)

4.d3 0–0 5.g3 (5.e4 a5 6.e5 Nd5=) 5...d6 6.Bg2 a5 7.ba5 Ra5 8.c4 (8.Qc2 Nbd7=) 8...Ne4+= 9.d4 (9.de4 Ba1 Discovered attack) 9...c5 10.Bb2 Nc6 11.e3 Be6 12.Bc3? (better is 12.Qc2!? d5 13.0–0+=) 12...Nc3–+ 13.Nc3 cd4 14.ed4 Bc4 15.Bf1 Be6 16.Qd2 (better is 16.Be2–+) 16...Bg4 17.Bg2 (17.Be2 Bf3 18.Bf3 Nd4–+) 17...Bf3 18.Bf3 Nd4 (18...Bd4?! 19.Bc6 Bc3 20.Qc3–+) 19.Bd1 Re5 (better is 19...Rc5 20.Na4 Rc2 21.Qd3 Qa5 22.Kf1–+) 20.Ne2 Nf3 (20...Nf3 21.Kf1 Nd2 22.Kg2 Qa8–+) 0–1. Kaytazki,Lyubomir (1945) – Pooley,Dr. Mark C (1925), WS/O/207 ICCF, 2008. (=1.Nf3 g6 2.b4)

4.h3 d5=+ 5.d4 0–0 (5...a5 6.Bf4=+) 6.Bg5 (6.Bf4 Nbd7=) 6...h6 (6...Ne4 7.Bf4=+) 7.Bh4 (7.Bf6 Bf6 8.Qd2 Bg7=+) 7...c6 (7...a5 8.e3=+) 8.e3 a5 9.Qb3 (9.Bd3 Ne4=+) 9...a4 (9...Ne4 10.Nfd2 Nd6 11.Bg3=+) 10.Qc2 Nbd7 (10...Ne4 11.Bd3 g5 12.Bg3 Ng3 13.fg3=+) 11.g4 (11.Bd3 b6=) 11...Ne4 12.a3 (12.g5 hg5 13.Ng5 e5=+) 12...Re8 (12...g5 13.Bg3 Ng3 14.fg3–/+) 13.c4 (13.g5!?=+) 13...g5–/+ 14.Bg3 (14.cd5 cd5 15.Bg3 Ng3 16.fg3=+) 14...e5 (14...Ng3 15.fg3 e5 16.Be2–/+) 15.cd5? (better 15.Be5 Be5 16.Ne5 Ne5 17.de5 Re5 18.Nc3=) 15...Ng3 16.fg3 ed4 (16...cd5?! 17.Be2–/+) 17.Ra2? (17.dc6 bc6 18.Bd3 Re3 19.Kd1 Rf3 20.Bh7 Kh8 21.Qc6–+) 17...Re3 18.Kf2 Qf6 (18...Ne5 19.Ne5 Qd5 20.Bc4 Qe5 21.Rg1–+) 19.Be2? (19.Qd1–+) 19...d3 (19...cd5?! 20.Nbd2–+) 20.Bd3 (20.Qc1 Re2 21.Re2 de2 22.Qe3 cd5 23.Re1–+) 20...Qf3 21.Kg1 Qg3 (21...Re1 22.Bf1 Qf1 23.Kh2 Qh1) 22.Kf1 (22.Qg2 Re1 23.Bf1 Bd4 24.Rf2 Bf2) 22...Re1 0–1. valerypavlovich – bluewolf, net–chess.com, 2017.

3.Nc3 Bc3

4.dc3+= b6 5.e4+/– Bb7 6.Bd3 e6 7.0–0 Nc6 8.e5 f6 9.ef6 Qf6+= 10.Bd2 h6 11.b5 Nce7 12.c4 Bf3=+ 13.gf3 e5 14.Be4 c6 15.bc6 dc6 16.Bb4 a5 17.Be7 Ne7–/+ 18.Rb1 Ra6 19.Qd3 Qg5 20.Kh1 0–0 21.c5 b5 22.Qe3 Qf4 23.Qf4 Rf4 24.Kg2 h5 25.Bd3 g5 26.c4 bc4 27.Be4 Rf8 28.Rbc1 g4 29.fg4= hg4 30.Rc4 Rf4 31.Kg3 Nd5?? 32.Bd5+– cd5 33.Rf4 ef4 34.Kf4 Rc6 35.Kg4 Rc5+/– 36.f4 Rc2 37.h4 Rc4 38.h5 d4 39.h6 d3 40.Rh1 d2+/– 41.Rd1 Rc2 42.a4 Kh7+= 43.Kg5 Rc5 44.f5 Rd5 45.Kf4 Kh6 46.f6 Kg6 47.Ke4 Rd8 48.Ke3 Kf6 49.Rd2 Re8 50.Kd3 Ke7 51.Kc4 Rb8 52.Rd3 Rb4 53.Kc5 Ra4 54.Re3 Kf6 55.Kd5? Rb4 56.Kc5= Rb8 57.Re4 Kf5 58.Ra4 Ra8 59.Kb5 Ke6 60.Ra5 ½–½. maz_manchester – Pawno Paul, ChessWorld.net, 2005.

4.dc3 Nf6 5.c4 a5 (5...d6 6.Bb2=) 6.c3 b6 (6...d6 7.Bh6=) 7.e3 Ba6 (7...Na6 8.Bd2+=) 8.b5 (8.Be2 Bb7+=) 8...Bb7 9.a4 (9.Be2 e5=) 9...c5 (9...Ne4 10.Qc2=) 10.Bd3 d6 11.0–0 e5 (11...Nbd7!?=) 12.Qc2?? (better is 12.Nd2+=) 12…e4–+ 0–1. gonso (2300) – cwhite (2200), net–chess.com, 2003. (=1.Nf3 g6 2.b4)

4.dc3 Nf6 5.e3 d5 +=.

4.dc3 Nf6 5.e3 d6 +=.

4.dc3 Nf6 5.Bf4 d6= 6.e3 (6.Bh6 Bg4=) 6...0–0 (6...e5 7.Bg5=) 7.Bc4 Bg4 8.0–0 Bf3 (8...Qd7 9.Bg5+=) 9.Qf3+/– (9.gf3?! Nbd7=) 9...c6 10.Rad1 e5? (10...Nbd7!?+=) 11.Bg5 (better is 11.Be5!? Ne8 12.Bd6 Nd6 13.Qf4+–) 11...Kg7+/– 12.h4 (better is 12.Bf6 Qf6 13.Qf6 Kf6 14.Rd6 Ke7 15.Rfd1+/–) 12...Nbd7?? (12...d5 13.e4 h6 14.ed5 cd5 15.Rd5 Qe7 16.Bf6 Qf6 17.Qf6 Kf6+–) 13.h5 (13.Rd6 e4 14.Qf4 b5 15.Rd7 Nd7 16.Bd8 Rad8+–) 13...gh5?? (13...h6 14.Bh4 d5 15.Bb3=) 14.Bd3 (better is 14.Rd6 Qe7 15.Rd7 Qd7 16.Bf6 Kh6 17.Be5+–) 14...h6 (14...a5 15.Bf5 Nb6 16.Qg3=) 15.Bh4+= Qe8 (15...Rg8!?+=) 16.Qf5 (better is 16.Bf5+/–) 16…Qe6=. gonso (2400) – eduardobandeira (1755), net–chess.com, 2002. (=1.Nf3 g6 2.b4)

3.Nc3 d5

4.Bb2 e5 5.e3 Ne7 6.Ne2 Qd6 7.a3 0–0 8.Qc1 Bg4 9.h3 Bf3 10.gf3 Nd7 11.h4 c5 12.Bh3 Nb6 13.f4 cb4 14.fe5 Be5 15.Be5 Qe5 16.ab4 Nc4 17.d3 Nd6 18.Ra5 (better is 18.c3!?=) 18...Nc6+= 19.d4 (19.Ra3 Nb4 20.Qb1 Nc6+=) 19...Qf6 20.Bg2 (20.Ra1!? Ne4 21.Nf4 Nb4 22.Qb2 Qh4 23.Nd3–/+) 20...Na5–+ 21.ba5 Ne4 22.f3 Nd6 23.e4 Nc4 24.e5 Qa6 25.Qh6 Qa5 26.c3 Qc7 27.h5 Qe7 (27...Qb6 28.hg6 Qb1 29.Kf2 Qg6 30.Nf4 Qh6 31.Rh6–+) 28.Kf2 (28.Nf4 Rfd8 29.hg6 fg6+=) 28...a5 (28...Nb6 29.hg6 fg6 30.Nf4–+) 29.f4 Rfd8 (29...Rad8!?–+) 30.f5–/+ Qf8 (better is 30...g5–/+) 31.Qc1? (better is 31.Qf8 Kf8 32.hg6 hg6 33.fg6=) 31...a4–+ 32.Nf4 Ra5 33.hg6 fg6 34.f6 (better is 34.fg6 hg6 35.Ke2–/+) 34...Qa3?? (better is 34...Qf7–+) 35.Qa3+/– Na3 36.Bh3 (better is 36.e6 Rb8 37.Bd5 (37.Nd5?! h5+–) 37...Rd5 38.Nd5+–) 36...h5?? (better is 36...Ra6+=) 37.Be6 Kh7 1–0. Ivanets,Vladimir (2265) – Batsanin,Dmitry (2245), Moscow IM1, 1996. (=1.Nf3 g6 2.b4 Bg7 3.Nc3 d5)

4.Bb2 e5 5.e4 d4 6.Na4 Nf6 7.Bd3 Nh5 8.g3 Bh3 9.Bf1 Bf1 10.Kf1 0–0 11.c3 d3 12.Qb3 Nd7 (12...Qd7 13.h3+=) 13.Kg2 (13.c4 Qe7=) 13...b5+= 14.Nc5 Nc5 15.bc5 Re8 16.a4 (16.Qb5? Rb8 17.Qa6 Rb2–+) 16...Qd7 17.h3 Rab8 18.ab5 Rb5 19.Qa4 c6 20.Ba3 Nf6 21.Qc4 a5 22.Rhe1 Bh6 23.Reb1 Reb8 24.Rd1 Re8 25.Rac1 Kg7 26.Re1 Ng8 27.Rb1 f6 28.Rb3 Kh8 29.Qa4 f5 30.c4 Rb3 31.Qb3 Bg7 32.Bb2 fe4 33.Ng5 Nf6 34.Ne4 Ne4 35.Re4 Kg8 36.f3 Ra8 37.Qa4 Rf8 38.Qa3 h5 39.Qb3 h4= 40.g4 Qd8 41.Bc3 Rf4 42.Qb7 Re4 43.fe4+= Qf6 44.Qb8 Kh7 45.Qd6 a4 46.Bb4 Qf7 47.Qd3 Bh6 48.Bc3 Bf4 49.Ba1 Bg3 50.Qf1 Qe7 51.Qd3 Qc5 ½–½. Ruiz Romero,Zenon – Alonso Gonzalez,Carlos, AEAC W/M/010, 2007. (=1.Nf3 g6 2.b4)

4.e3 e5 5.d4 ed4 6.Nd4 a5 7.b5 c5 8.bc6 bc6 9.Na4 Ne7 10.Rb1 Nd7 11.Ba3 Qc7 12.Be2 Rb8 13.Rb8 Nb8 14.0–0 0–0 15.c4 Rd8 16.Qb3 (16.Bc5 Re8+=) 16...Nf5 17.Bc5 (17.Nf5!? Bf5 18.cd5 Rd5 19.Bc4+=) 17...Nd4 18.ed4 dc4 19.Bc4 Bd4 20.Bf7 Qf7 21.Qb8 Bc5 (21...Bf6 22.Qa8+=) 22.Nc5= Qa2 23.Qc7 Qd5 24.Qa5 Rf8 25.Qa3 Rf5 26.Qb3 Qb3 27.Nb3 Be6 (better is 27...Rb5!? 28.Nd4 Rb6=) 28.Nd4+= Rg5?? (better is 28...Rf6 29.Nc6 Bc4 30.Ne7 Kf8+/–) 29.Ne6 (29.Ne6 Rd5 30.f4+–) 1–0. Grosse_Gehling,Thomas (1810) – Schneider,Wladimir, Bonn–Bad Godesberg, 2013. (=1.Nf3 g6 2.b4 Bg7)

3.Nc3 Nf6

4.d4 d6 5.e3 a5 6.b5 b6 7.Bd3 c5 8.bc6 Nc6 9.0–0 0–0 10.a3 Bb7 11.e4 Nd7 12.Be3 e5 13.d5 Nc5?? (better is 13...Nd4+=) 14.dc6+– Bc6 15.Bc5 bc5 16.Rb1 Rb8 17.Bb5 Ba8 18.Qd2 f5 (18...Qe7 19.Bc4+–) 19.Bc4 Kh8 20.Rb8 Qb8 21.Rb1 Qc7 (21...Qd8 22.Bd5 Rf6 23.h3+–) 22.Nb5 Qb7 23.Ba2 fe4 (23...d5 24.ed5 Qd7 25.Ng5+–) 24.Nd6 Qe7 (24...Qb1 25.Bb1 ef3 26.gf3 Bf3 27.Qa5 h6+–) 25.Ng5 e3 26.Ndf7 Rf7 27.Qd8!! Qd8 1–0. BlackDemon (2605) – ericviolette, FICS rated standard game, 2013.

4.g3 0–0 5.Bb2 d5 6.Bg2 Nc6 7.0–0 Nb4 8.a3 Nc6 9.d4 Bg4 (9...Bf5 10.Ne5–/+) 10.h3 (10.Ne5 Be6–/+) 10...Bf3 11.Bf3 e6 (11...Qd7 12.g4–/+) 12.Re1 (12.Rb1 Qd7–/+) 12...e5 (12...Nd7!? 13.e3 Nb6–/+) 13.de5+= Ne5 14.Bg2? d5 seems the pivot of the position (better is 14.Bd5 c6 15.Bb3=) 14...Nc4–+ 15.Bc1 c6 16.Bg5? Qd6 17.Rb1 Qd7 18.Na4 Na3 19.Rb3–/+ Nc4 20.Nc5 Qf5 21.Bf6 Bf6?? 22.Rb7?? Bc3–+ 23.Rf1 Nd2 24.g4 Qf4 25.e3 Qc4 26.Nd7 Rfd8 27.Re1 a5 28.Nb6? Qb5 29.Re2? Nc4 30.Nc4 Qb7 31.Nd2 a4 32.Nb1 Bg7 33.Qd3 Qb1 34.Kh2 a3 (34...a3 35.Rd2 a2–+) 0–1. gbsrao (2165) – ghorn (2140), net–chess.com, 2007. (=1.Nf3 g6 2.b4)

4.g3 d5 5.Bg2 0–0 6.0–0 b6 7.d4 Bb7 (7...c6 8.Bf4=) 8.Bf4 Nbd7 9.Rc1 e6 10.Qd2 Rc8 11.Rfd1 (11.Rb1 Re8=) 11...Nh5 (11...Qe7 12.Rb1+=) 12.Bg5 Bf6 (12...Nhf6 13.Rb1+=) 13.Bh6 Bg7 14.Rb1 Re8 15.a4 a6 16.Bg5 (16.a5 Bh8+=) 16...Nhf6 17.Ne5 c5? (better 17...Qe7+=) 18.bc5+– Qc7 19.Bf6 Bf6 20.Nd7 Qd7 (20...Qd7 21.Rb6 Bd8+–) 0–1. Rivenburg,John (1800) – Kepinski,Janusz (1620), FICGS, 2009.

3.d4 d5

4.Bb2 b6 5.e3 Bb7 6.c4 e6 7.cd5 ed5 8.Nbd2 Nf6 9.Bd3 Nbd7 10.0–0 0–0 11.Rc1 Ne4 12.Be4 (12.Qc2!? Nd2 13.Qd2+=) 12...de4= 13.Ne1 f5 14.Qc2 c6 15.g3 (15.f3 Nf6=) 15...h5 (15...Nf6!?+=) 16.Ng2= Nf6 (16...Kh7!?=) 17.Nf4+= Nd5 (17...Qe8 18.Nc4 Ba6 19.Ba3+=) 18.Ne6+/– Qf6 19.Nf8 Bf8 20.a3 h4 21.Nc4 hg3 22.hg3 Qg5 23.Ne5 Rc8 24.Kg2 Kg7 (24...Bg7 25.Qb3 Qe7 26.Qa4+– (worse is 26.Ng6 Qe6+=)) 25.Rh1 f4 26.ef4 Nf4 27.Kf1 Nd3? 28.Nd3+– ed3 29.Qd3 c5?? 30.dc5 Kf7 31.Qc4 Ke8 32.Re1 Be7 33.Rh8 Kd7 34.Qd4 Qd5 35.Qd5 Bd5 36.Rc8 Kc8 37.Re7 1–0. bluepiramid2 (1810) – ppal (1725), playok.com, 2012. (=1.Nf3 g6 2.b4)

4.e3 Nf6 5.c4 0–0 (5...Bf5 6.Nc3=+) 6.Be2 (6.Nc3 Be6=+) 6...c6 (6...Be6 7.Nbd2=+) 7.Nbd2 dc4 8.Nc4 Nd5 9.a3 (9.0–0 Bf5=) 9...Nd7 (9...Nc3 10.Qc2 Ne2 11.Qe2=) 10.0–0 Nc3 11.Qc2 Ne2 12.Qe2 b6 (12...Nb6 13.Na5=) 13.Bb2 Bb7 14.Rfd1 Qc7 15.Rac1 Rad8 16.e4 Qb8 (16...Qf4 17.Re1+=) 17.Nce5 (17.Rc2 Rfe8+=) 17...Ne5= 18.Ne5 Rd6 (18...Qd6 19.f3=) 19.Nc4 Rd7 20.Ne5 Rc7 (20...Rd6!?=) 21.Qc4+= White prepares d5 21...e6 (better 21...Be5!? 22.de5 Bc8+=) 22.d5+– ed5 23.ed5 Re7 (23...Qe8!? 24.f4 Rc8+–) 24.Nc6+– Bc6 25.Bg7 Bd5 26.Bf8 (better 26.Qh4!? Rd7 27.Bf8 Qf8 28.Rd3+–) 26...Bc4+– 27.Be7 Qe5 28.Rc4 (28.Bd6 Qe6+–) 28...Qe7+= 29.Rcd4 Qe6 30.h3 Qb3 31.R4d3 Qb2 (31...Qc2 32.Rd7+=) 32.R1d2 (better 32.Rf3!? a5 33.Rd8 Kg7 34.Rd7+–) 32...Qa1 33.Kh2 h5 34.Re2 Kf8 (34...Qc1 35.Rf3 Qc7 36.g3=) 35.Rd8 Kg7 36.Re3 Qf6 37.Rd2 (37.Rd7 h4+=) 37...h4 38.g3 hg3 39.fg3 b5 40.Kg2 Qc6 41.Kh2 a6 42.Red3 Kh6 43.Rf2 f5 44.Re3 Kg5 45.Ref3 Qe4 46.Rc3 Qd4 47.Rcf3 Qb6 48.Kg2 Qc6 49.Kh2 Qc1 50.Kg2 Kh6 51.Kh2 Kg7 52.Kg2 Qc4 53.Re3 Kf6 54.Rfe2 Qc6 55.Kh2 Qd5 56.Kg1 Kg5 57.Rf2 Qd4 58.Ref3 Kf6 59.Kg2 Ke5 60.Rf4 Qd1 61.g4 fg4 62.Rg4 Qd3 63.Rf3 Qc2 64.Kg3 Qb1 (64...Qd2 65.Rg6 Qe1 66.Kg2 Qe2 67.Kg3 Qe1 68.Kg2 Qe2 69.Kg3 Qe1=) 65.Re3 (65.Kh4 Qd1 66.Rgf4 Qd2+=) 65...Kd5 (65...Kf6!?=) 66.Kh4+= Qc2 67.Reg3 (67.Rgg3 Qc7 68.Kg5 Qh7+=) 67...Qf2 68.Rg6 Ke5 69.Kh5 Qf7 70.Kh6 (70.h4 Qh7 71.Kg5 Qe7 72.Kg4 Qd7 73.Kf3 Qd5 74.Kf2 Qd2 75.Kf1 Qf4 76.Kg2 Qh4 77.Re3 Kf4=) 70...Qf8= 71.Kh5 Qf7 72.R3g5 Kf4 73.Kh6 Qf8 74.Rg7 Qh8 75.Kg6 Qh3 76.Kf6 Qc3 (76...Qa3 77.Rg4 Kf3 78.Rg3 Kf2 79.Ra3 Kf1 80.Ra2 a5 81.Rc7 ab4 82.Rc1) 77.Ke6 Qb3 (77...Qa3 78.Rg4 Ke3 79.Rg3 Ke2 80.Ra3 Kf2 81.Rc7 Ke2 82.Rc2 Kd1 83.Rg2 a5 84.Ra1) 78.Kd6 Qd3 79.Kc6 Qa3 80.Rg4 Kf5 81.R7g5 Kf6 82.Rg6 Ke5 83.R6g5 Ke6 84.Rg6 Kf5 85.R6g5 ½–½. Shabanov,Nurlan – Rasulov,Vugar, Aydin Guseinov Memorial – Rapid, 2016. (=1.Nf3 g6 2.b4 Bg7 3.d4 d5)

4.e3 Nf6 5.Be2 0–0 6.0–0 Nc6 7.a3 e6 (7...Bf5 8.Nbd2=) 8.Bb2 Ne7 9.Nbd2 c6 10.c4 Nf5 11.Ne5 Nd6 12.c5 Nde4 13.Ne4 Ne4 14.f3 Nf6 15.Qc2 Nd7 16.Nd3 Qg5 17.f4 Qf5 18.Rac1 Qe4 19.Kf2 Nf6 20.g4 h5 21.h3 hg4 22.hg4 g5 23.Ne5 gf4= 24.Qe4? Ne4–+ 25.Kg2 fe3 26.Bd3 Be5 27.Be4 Bc7 28.Bd3 Kg7 29.Kf3–/+ Bd7 30.Ke3 Rh8 31.Rh1 Rh1 32.Rh1 Rh8 33.Rh8 Kh8 34.a4 White prepares b5 34...Kg7 35.b5 Bd8 36.Kf3 Kh6 37.Bc1= Bg5 38.Bf4 Bf4 39.Kf4 f6 40.b6 a5 41.Ba6 Bc8 42.Bd3 Kg7 43.g5 fg5 44.Kg5 Kf7 45.Bg6 Ke7 46.Bd3 Bd7 47.Ba6 Bc8 48.Bd3 Kd8 49.Kf6+= Bd7 50.Kf7 Bc8 51.Kf8 Kd7 52.Kf7 Kd8 53.Be2 Bd7 54.Kf6 Ke8 55.Bh5 Kd8 56.Bg4 The backward pawn on e6 becomes a target 56...Ke8 57.Be6 Be6 58.Ke6+= Kd8 59.Kd6 Kc8 60.Ke7 Kb8 61.Kd7 Ka8 62.Ke6 Kb8 63.Ke7 Ka8 64.Ke8 Kb8 65.Kf8 Ka8 66.Kg8 Kb8 67.Kg7 Ka8 68.Kh6 Kb8 69.Kh5 Ka8 70.Kh4 Kb8 71.Kh3 Ka8 72.Kh2 Kb8 73.Kg1 Ka8 74.Kf2 Kb8 75.Kf3 Ka8 76.Kf4 Kb8 77.Ke5 Ka8 78.Kd6 Kb8 79.Ke6 Ka8 80.Kf7 Kb8 81.Kg8 Ka8 82.Kh8 Kb8 83.Kh7 Ka8 84.Kh6 Kb8 85.Kh5 Ka8 86.Kh4 Kb8 87.Kh3 Ka8 88.Kh2 Kb8 89.Kh1 Ka8 90.Kg1 Kb8 91.Kf1 Ka8 92.Ke1 1–0. gslabek (1975) – vuirweirv (2010), playok.com, 2011. (=1.Nf3 g6 2.b4)

3.d4 d6

4.Bb2 b6 5.g3 Bb7 6.Bg2 Nd7 7.0–0 c5 8.bc5 dc5 9.c3 e6 10.Nbd2 Ngf6 11.Re1 0–0 12.e4 cd4 13.cd4 Rc8 14.Rc1 Rc1 15.Qc1 Qc8 16.Qc8 Rc8=+ 17.e5 Nd5 18.Ne4 Rc2 19.Ba3? Ba6 20.Rc1 Rc1 21.Bc1= Bd3 22.Nd6 Bf8 23.Ba3 Nc3 24.Ne1 Bb1 25.Bc6 Nb8 26.Be8 Ne2 27.Kf1 Nd4 28.Bf7 Kg7 29.Be8 Ba2 30.Bb2 Nf5 31.Nb5 Bc4–/+ 32.Kg2 a5 33.Na3 Bd5–+ 34.Kh3 Na6 35.Nb5 Bb4 36.Nd3 Bd2 37.Nd6–/+ Nb4 38.Nf4? Bf4–+ 39.gf4 Nd3 40.Nf5 gf5 41.Bd4 Nf4 42.Kh4 Ng6 43.Bg6 hg6 44.Bb6 a4 45.Kg5 a3–/+ 46.Bd4 a2 47.f4 Bf3 ½–½. gbsrao (2185) – bumeyou (2220), net–chess.com, 2006.

4.Bb2 c5 5.bc5 dc5 6.e3 Qb6 7.Bc3 Nf6 8.Nbd2 0–0 9.Rb1 Qc7 10.Bc4 b6 11.0–0 Bb7 12.dc5 Qc5 13.a4 Ne4 14.Bg7 Kg7 15.Rb5 Qc8 16.Ne4 Qc4 17.Qa1 f6 18.Nfd2 Qc8 19.c4 (19.Qa3 A) 19...Qc2? A1) 20.Qe7 Rf7 21.Qe6 Nc6+= (worse is 21...Qa4 22.Nd6 Rd7 23.Ne8 Kf8 24.Qf6 Kg8 25.Qe6 Kf8 26.Nd6+/–); A2) 20.Rc1 Be4 21.Rc2 Bc2 22.Rb2+–; B) 19...Qd7 20.Rb3 Rc8=) 19...Ba6 (19...Be4 20.Ne4 Qc4 21.Nd2+=) 20.Rg5 Kg8 (20...Bc4? 21.Rc1+– (worse is 21.Nc4 Qc4 22.Rg4 Qe6+=)) 21.Rg3 Nc6 (21...Bc4? 22.Rc1+– (worse is 22.Nc4 Qc4 23.Nd2 Qe6–/+)) 22.f4 Qf5 23.Rc1 Rfd8 24.c5 Bd3 25.Nf2 bc5 (25...Nb4 26.c6 Rac8+=) 26.Qc3?? (better is 26.e4 Qf4 27.Qa2 (27.Rd3 Rd3 28.Qa2 Kf8 29.Nd3 Qe3 30.Nf2 Rd8–+) 27...Kh8 28.Nd3+/– (worse is 28.Rd3 Rd3 29.Nd3 Qe3 30.Nf2 Nb4+=)) 26...Be2 27.Re1 Ba6 28.Rf3 Rac8 29.e4 Qd7 30.Nf1 Nd4–+ 31.Rfe3 Qa4 32.Ra1 Qc6 33.Qa5 Bf1 34.Rf1 Qb6 35.Qa3 Kg7 36.Rc1 Rd7 37.e5 fe5 38.Re5 Qb3 39.Qa6 Rdc7 40.Rce1 Qf7 41.R5e4 Qf6 42.Qa1 e6 43.Ng4 Qd8 44.Re6 Qh4 45.h3 Rf8 46.R6e4 Rff7 47.Qc3 Rfe7 48.Kh2 Re4 49.Re4 Qd8 50.Qe3 Nf5 51.Qb3 h5 52.Ne5 Qd6 53.Nc4 Qd5 54.Qc3 Nd4 55.Re5 Qd7 56.f5 gf5–/+ 57.Qg3 Kf7?? 58.Qg5+= Qa4?? 59.Nd6+– Kf8 60.Qd8 Kg7 61.Qc7 Kf6 62.Ne8 Kg5 63.Qg7 (63.Qg7 Kh4 64.g3) 1–0. Machala,Vladislav – Malecek,Jiri, CZE–chT1a, 1997. (=1.Nf3 g6 2.b4 Bg7)

3.d4 Nf6

4.c4 b6 5.Bb2 Ne4 6.Nbd2 Bb7 7.Ne4 Be4 8.e3 c5 9.bc5 bc5 10.Bd3 Bd3 11.Qd3 Qa5 12.Bc3 Qa3 13.0–0 Nc6 14.Rfc1 0–0 15.d5 Nb4 16.Qd2 Rab8 17.Bg7 Kg7 18.h4 h6 19.Rc3 Qa6 20.a3 e6 21.Rd1 ed5 22.ab4 cb4 23.Rcc1 dc4 24.Qd4 Kh7 25.Rc4 d5 26.Rc5 b3 27.Rd5 b2 28.Rb1 Qa2 29.Qd1 Rfc8 30.Rd2 Qb1 31.Qb1 Rc1 32.Rd1 Rd1 33.Qd1 b1Q 34.Qb1 Rb1 35.Kh2 a5 36.Ne5 a4 37.Nf7 a3 38.h5 gh5 39.Nd6 a2 40.g3 a1Q 41.Ne4 Qa8 42.Nf6 Kg6 43.e4 0–1. bobifaker (1810) – jojopa (1740), playok.com, 2012. (=1.Nf3 g6 2.b4)

4.e3 0–0 5.Be2 e6 (5...d5 6.c4=) 6.0–0+= d5 7.Nbd2 Qe7 8.Rb1 Nc6 (8...Nbd7 9.c4=) 9.b5+= Nd8 10.c4 c6 (10...Re8 11.Qc2+=) 11.Qb3 cb5 (Better is 11...b6–/+) 12.Ba3 (12.cb5 Re8 13.Ba3–/+) 12...Qc7?? (Better is 12...bc4 13.Qc3 Qe8=) 13.cd5+– Re8 14.Rfc1 Qb6 15.Bb5 Bd7 16.Bd7 Nd7?? 17.Qa4 Qa6 18.Qd7 Rf8 19.Bf8 Bf8 20.de6 fe6 21.Rc7 Qd6 22.Qh7 1–0. tromar – Almisty, GameColony.com, 2002.

2.h4 Bg7=+

3.c3 Nc6 4.b5 Ne5 5.Bb2 (5.d4!? Nc4 6.e4=) 5...Nc4 6.Ba3 Na3 7.Na3 c6 (7...Nf6 8.Nf3–/+) 8.bc6 bc6 9.Nc4 d5 10.Nb2 Nf6 11.c4? (11.Nf3 Ng4=+) 11...dc4?? 12.Nc4–/+ Qd5 13.e3 Ba6 14.Rc1 0–0 15.Qa4 Bb5 16.Qb3 Rfd8 17.Nf3 Ne4 18.Be2 Rab8 19.d3? Nc5 20.Qc2 Ba4 21.Qd2 e5 22.h5 e4 23.hg6? ef3–+ 24.gh7 Kh8 25.gf3 Nd3 26.Bd3 Qd3 27.Qd3 Rd3 28.Nd2?? Bc3 29.Rc3 Rc3 30.Nb3 Bb3 31.Kd2 Rc2 32.Kd3 0–1. pinecrest1981 – anto44, Live Game Caissa's Web, 2004.

3.c3 Nf6 4.Nf3 =+.

3.d4 c5 4.bc5+= Qa5 5.Bd2 Qc7 6.c3 Nc6 7.h5 b6 8.cb6 ab6 9.hg6 hg6 10.Rh8 Bh8 11.e4 Ba6 (11...Nd4 12.cd4 Bd4+=) 12.Ba6+/– Ra6 13.Nf3 Na5 14.Na3 Nc4 15.Nb5 (15.Nc4!? Qc4 16.Qe2+/–) 15...Qc6+/– 16.Qb3 (better is 16.Qb1+/–) 16...Ra5+= (worse is 16...Qe4 17.Kd1 Qc6 18.Bf4=) 17.d5? (better is 17.a4 Qe4 18.Kd1+=) 17...Qb5–+ 18.Qb5 Rb5 19.Bf4?? (19.Nd4 Bd4 20.cd4 Nd2 21.Kd2–+) 19...Bc3 20.Ke2 (20.Nd2 Nd2 21.Rc1 Ne4 22.Ke2 Rc5–+) 20...Ba1 21.Kd3 Nd6 (better is 21...Rb4 22.Nd2 Nd2 23.Bd2 Rd4 24.Ke3–+) 22.e5 (22.Bd6 ed6 23.Nd2 Ra5–+) 22...Rd5 23.Kc2 Nf5 24.Kb3 d6 25.ed6 Nd6 26.a4 Nf6 27.g3 (27.Be3 Nd7–+) 27...Bd4 (better is 27...Rd3 28.Ka2 Rf3 29.Ka1 Rf2 30.Be3 Rf1 31.Ka2–+) 28.Nd4 Rd4 29.Be3 Rd3 30.Kb4 Nd5# 0–1. michalakmarek (1625) – superpolitist, playok.com, 2012.

3.d4 Nf6 4.Nf3 d6 5.e3 Bd7 6.Bd3 Nc6 7.c3 e5 8.e4 ed4 9.b5 Ne5 10.cd4 Nd3 11.Qd3 0–0 12.Bg5 Qe8 13.Nc3 h6 (Better is 13...Ne4!? 14.Qe4 Qe4 15.Ne4 Rfe8–/+) 14.Bf6= Bf6 15.h5 Bg7 16.Rc1 Bg4 (16...f5!? 17.Kd1 fe4 18.Ne4 Bb5 19.Qb3 d5=) 17.Nd5+= Bf3 18.gf3+/– Rc8 19.Rc7 Rc7 20.Nc7 Qd7 21.Nd5+/– Qd8 22.hg6+– fg6 23.Qc3 Rf7 24.a3 Rc7?? 1–0. guest2458 – guest403, ICC, 2003.

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    Available lines:
  • 1.b4 (4 players, 1 day/move)
  • 1.b4 (4 players, 10 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 (4 players, 3 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.f4 ef4 4.Bg7 Qh4 5.g3 fg3 6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 (Kucharkowski-Meybohm gambit, 6 players, 10 days move)
  • 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 (Sokolski gambit, 4 players, 3 days/move)
  • 1.c4 Nf6 2.b4 (English orangutan, 4 players, 3 days/move)
  • 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
  • 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 (French: Wing gambit, 4 players, 3 days/move)

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