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TESTK Release 2021-04-30
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 g5

(...)

2.a3 d5 3.d4 h6 4.e3 Nf6 5.c4 Bf5 6.cd5 Qd5+=.

2.a3 h6 3.Bb2 f6 (3...Nf6!?=) 4.e3 Do you see the mate threat? 4...Bg7 5.d4 e6 6.c4 d6 7.b5 (7.Qh5 Kd7+–) 7...a5 (7...f5 8.Qh5 Ke7 9.Qg6+=) 8.a4 (8.Qh5 Kd7+–) 8...b6 (8...f5 9.Qh5 Kf8 10.Nc3+=) 9.Nd2 (better 9.Qh5 Kd7 10.c5+–) 9...Nc6?? (9...f5 10.Qf3 Ra7 11.Qh5 Kd7 12.Rb1+=) 10.Qc2 (better 10.bc6 Ne7 11.Qh5 Kf8 12.Qf3+–) 10...Nd4?? (better 10...Nce7+=) 11.ed4 (11.ed4 f5 12.Nb3+–; 11.Qg6 Kf8 12.ed4 Bb7+–) 1–0. pat_cash87 – Rosangela12, lichess.org, 2020.

2.Ba3 Bg7 3.d4 c5 (3...d5!?=) 4.c3 (4.bc5!? Nf6 5.c3+=) 4...cd4 5.cd4 Nc6 6.e3 Qb6 7.Nf3 (7.Nc3 Nb4 8.Qb3 a5+=) 7...Nb4 (7...g4!? 8.Nfd2 Nd4= (8...Nb4? 9.Nc4 Qh6 10.Bb4+–)) 8.Bb4 Qb4 9.Qd2 Qd2–/+ 10.Nbd2 h6 11.Be2 d5 12.Bb5 Kf8 13.0–0 a6 14.Be2 Nf6 15.Ne1 b5 16.Nb3 Nd7 17.Rc1 Bf6 18.Nc5 Kg7 19.Nd7 Bd7 20.Bh5 Rhc8 21.Rc8 Rc8 22.Nd3 Rc2 23.Nb4 Rb2 24.Na6 Ra2 25.Nc5 Bf5–+ 26.g4 Bh7 27.Rc1 b4 28.Nb3? Bc2 29.Na1 b3 30.Re1 Ra3 31.Kg2?? Be4–+ 32.Kg3 b2 33.f3 Bf3! 34.Nc2 Be4 35.Na3+/– e5 36.Kf2 ed4 37.ed4 =+. pinecrest1981 – henrigrob, Live Game Caissa's Web, 2004.

2.a4 d5 3.Bb2 Nf6 4.Nf3=.

2.a4 e5 3.Nf3 (3.Bb2 Bg7=) 3...f6 4.b5 (4.e4 Bb4 5.c3 Ba5=) 4...g4+= 5.Nh4 (5.Ng1 d5+=) 5...d5 6.h3 Bg7 (6...gh3 7.g3+=) 7.e4= de4 8.hg4 Nh6 9.Be2 Be6 10.Nc3 Qd7 Pawn g4, live or die! 11.0–0 (11.Bb2 Qe7+=) 11...a5 (11...a6 12.Rb1=) 12.Rb1 (12.Ne4 Qd4 (worse is 12...Bg4 13.Bg4 Qg4 14.Qg4 Ng4 15.d3+/–; 12...Ng4 13.Nc5 Nf2 14.Rf2+–) 13.Nc3 Ng4= (worse is 13...Bg4 14.Bg4 Qg4 15.Qg4 Ng4 16.Nf5+/–)) 12...Qd4+= 13.b6 c6 14.Nf5 Nf5 15.gf5 Bf5 16.Bb2 Qb4 17.Ba1= Qc5 18.Bh5 Bg6 19.Ne4+/– Bh5?? 20.Qh5+– Kf8 21.Nc5 (21.Nc5 Na6 22.Na6 Ra6 23.f4+–) 1–0. pierre – opponent, internet, 2008.

2.a4 e6 3.b5 c6 4.Bb2 a6?? (better is 4...Nf6!?+=) 5.bc6 (better is 5.Bh8 d5 6.e3+–) 5...f6+/– 6.cd7 Nd7 7.e4 Bc5 8.a5 Ba7 9.d4 b6 10.Bd3 ba5 11.Nf3 Qb6 12.Ba3?? Bb7?? 13.0–0 h5? 14.Re1?? Ne5?? 15.de5+– Qf2 16.Kh1 Qb6 17.ef6 Nf6 18.Ng5 0–0–0 19.Nc3 Rhe8?? 20.Rb1 Qd4 21.Ne2 Qe5 22.Nf7 Rd3?? 23.Qd3 Be4 24.Qa6 Kd7 25.Qa7 (25.Qa7 Qc7 26.Red1 Nd5 27.Ne5 Kd8 28.Rb8 Qb8 29.Qb8#; 25.Ne5 Kd8 26.Nf7 Kd7 27.Qa7 Bb7 28.Qb7#) 1–0. pmcl1971 – Eries, ChessWorld.net, 2012.

2.Bb2 b6 3.Bh8 Bb7 4.e3 Bc6 (4...Nf6 5.Nf3+–) 5.Qh5 (5.Nc3 Bb7+–) 5...Na6 (5...h6 6.b5 Bb7 7.Nf3+–) 6.Ba6 (6.Ba6 Bg2 7.Qg5 Bh1 8.Qg8+–) 1–0. GuestHVWR – GuestYLDD, freechess.org, 2019.

2.Bb2 e5 (--> 1.b4 e5 2.Bb2 g5).

2.Bb2 g4 3.e3 d6?? 4.Be2 (better 4.Bh8 e5 5.h3+–) 4...e5+– 5.Bg4 Bg7 6.c4 Qg5?? (better 6...Ne7+–) 7.Bc8+– Qg2 8.Qf3 Qf3 9.Nf3 Nd7 10.Bb7 (10.Bb7 Rb8 11.Bd5+–) 1–0. GuestDPKR – GuestMKCK, freechess.org, 2017.

2.Bb2 h6 3.a3 Rh7 (3...Nf6 4.e4=) 4.d3 (4.e3 Nf6+=) 4...h5 (4...d5 5.e3=) 5.Nf3 (5.e4 d5+=) 5...g4 6.Ng5 Rg7 (6...Rh6!? 7.c4 e5=) 7.Bg7+– Bg7 8.c3 Bc3?? (better 8...d5 9.e4 d4+–) 9.Nc3+– d6 (9...d5 10.Qb3 c6 11.h4+–) 10.h3 f6 (10...e5 11.Qd2 a5 12.b5+–) 11.Qb3 e5 (11...Nh6 12.Ne6 Be6 13.Qe6 g3 14.fg3 a5+–) 12.Qf7 1–0. Janek – zandar, internet, 2017.

2.Bb2 Bh6?? 3.Bh8+– g4 (3...Nf6 4.e3 d5 5.d4+–) 4.e3 Na6 (4...d5 5.Be2+–) 5.Qg4 Nf6 (5...Kf8 6.Ba6 d5 7.Qh5 ba6 8.Nf3+–) 6.Bf6 ef6 7.Qg8 (better is 7.Ba6 d5 8.Qg8 Bf8 9.Bb5 c6+–) 7...Bf8 8.Ba6 ba6 9.Ne2 Rb8 10.c3 Rb5 11.0–0 Bb7 12.d3 Bd5?? 13.c4 Rb4 14.cd5 Qe7 15.Nbc3 Qe5 16.d4 Qh5 17.Rfb1 Rc4 18.Rb8 Ke7 19.Qf8 1–0. Trkn – joe2sa, itsyourturn.com, 2000.

2.b5 e5 3.Bb2 f6 (3...Bg7 4.e4=) 4.e3 Nh6 5.Nc3 d6 (5...d5 6.e4 de4 7.Ne4=) 6.g3 (6.Qh5 Nf7+=) 6...Bd7 (6...g4 7.Bg2=) 7.Ba3 (7.Qh5 Nf7+=) 7...Ng4 (7...Bg4 8.f3 Be6 9.Nge2=) 8.Bh3 (8.h3 Nh6+=) 8...Nh6 (8...f5!?=) 9.Qf3+= Nf7? (9...c6 10.Ne4 f5 11.Nd6 Bd6 12.Qh5 Nf7 13.Bd6 Qf6+=) 10.d3?? (Better is 10.Qb7 Bh3 11.Qa8+– (11.Nh3?! Nd7+–)) 10...Bh6?? 11.Nd5?? b6?? 12.Ne2 Bh3+= 13.e4?? g4 14.Qf5? Ng5?? 15.f4?? Nf3 16.Kd1 Bg2?? 17.Rf1 Bf1 18.Nf6 Kf8 19.Nh7 Ke8 20.Qg6 Ke7 21.fe5?? Bd2 22.Bc1?? Be1 23.Rb1?? Kd7 24.Nf6?? Kc8–+ 25.Bg5?? Rh2 26.Nf4 Rd2 27.Kc1 Nd4 28.Rb4 Nc2 29.Rc4 Na3 30.Rc3 Nb5 31.Qf7 Nc3 (32.Ne6 Na2 33.Kb1 Bd3 34.Ka1 Rf2–+) 0–1. Tiedemann,Marcel – Franziska,Franzi, remoteschach.de, 2002.

2.b5 Nf6 3.c4 c6 4.d4 Bh6 5.Bd2 a6 6.a4 Bg7 7.e4 Ne4–/+ 8.Qb3?? c5 9.d5?? Ba1 10.b6 e6 11.Nh3 Rg8 12.Bd3 Nf6 13.Bg5 Rg5 14.Ng5 Ng4 15.Nh7 Nf6 16.de6 Ng4?? 17.Qd1 Nf6 18.ed7? Qd7 19.0–0–/+ Nc6 20.Qe2 Ne7 21.Nd2 Qa4 22.Re1 Bg4?? 23.Qe7# 1–0. Jolilein – stierdame1965, mySchach.de, 2005.

2.b5 g4 3.g3 d6 4.Bg2 c6 5.a4 Bg7 6.c3 Nh6 7.Bb2 Nf5 8.Qc2 0–0 9.e3 cb5 10.ab5 Nd7 11.c4 Nc5 12.Bg7 Ng7 13.Ne2 Bf5 14.Qc3 Ne4 15.Qc1 Nd2 16.Qd2 Bb1 17.Rb1 Ne6 18.0–0 Nc5 19.Nd4 Rc8 20.Bb7 Rc7 21.Bg2 e5 22.Nf5 Qg5 23.Nd6 Rd8 24.Nf7 Qg6 25.Qd8 Kg7 26.Qc7 Qf7 27.Qf7 Kf7 28.Rfd1 Nd3 29.Rd3 Kf6 30.Rd7 a5 31.Rh7 Ke6 32.Rh6 Kd7 33.Ra6 Kc7 34.Ra5 e4 35.Be4 Kb6 36.Rba1 Kc5 37.Bd5 Kb4 38.Ra8 Kc3 39.Rg8 Kd2 40.Rg4 Ke2 41.Ra2 Kd3 42.Rd4 Kc3 43.Rad2 Kb4 44.b6 Kc5 45.b7 Kd6 46.b8Q Kc5 47.Qc7 Kb4 48.Qb6 Kc3 49.Qb2 1–0. A_VB – slibeer, lichess.org, 2019.

2.c3 e5 3.e3 (3.d4 e4=) 3...Be7 (3...d5 4.d3=) 4.Nf3 d5 (4...e4 5.Nd4=) 5.h3 (5.Ne5 Bd6 6.d4 Qe7+/–) 5...Bd7 (5...e4 6.Nd4=) 6.d3 (better is 6.Ne5!? Bd6 7.Nd7 Nd7 8.d4+/–) 6...f6= 7.Be2 Nc6 8.Bb2 a6 9.Nbd2 Nh6 10.0–0 (10.Rb1 Be6=) 10...Rg8 (10...g4 11.hg4 Bg4 12.Nh2+=) 11.e4 (11.Nh2 Nf7=) 11...de4 (11...g4 12.hg4 Bg4 13.Kh1+=) 12.de4= g4 13.hg4 Ng4 14.Nh2 Nh2 15.Kh2 Kf8 16.Kg1 b5 17.Qc2 Nb4? 18.cb4+– Rb8? 19.a3 h5 20.Nf3 h4 21.Rad1 Rh8 22.Rd2 Rb6 23.Rfd1 Rb8 24.Rd7 Qe8 25.Rc7 Bd8 26.Rc8 Rc8 27.Qc8 Rh7 28.Rd8 Qd8 29.Qd8 Kf7 30.Qb6 Kg6 31.Qa6 h3 32.g3 h2+– 33.Nh2 (33.Nh2 Rf7 34.Ng4 Kg7 35.Ne5 Rc7 36.Qd6 Re7 37.Qe7 Kh8 38.Qf7 fe5 39.Be5) 1–0. Fournier,Frederic – criw, Active Blind, 2009.

2.c3 Nf6 3.d4 Bh6 4.h4+/– g4?? 5.Bh6+– Ng8 6.Bf4 d5 7.Be5 f6 8.Bf4 Bf5 9.e3 c6 10.Qa4 b6 11.Bb8 Qb8 12.Qc6 Bd7 13.Qd5 f5 14.Bb5 Nf6 15.Bd7 Nd7 16.Qf5 g3 17.Qh5 Kd8 18.fg3 Qc7 19.Ne2 Nf6 20.Qf3 Rc8 21.0–0 Rf8 22.Nf4 Qd6 23.Nd2 Nd5 24.Qd5 Ke8 25.Qb7 Rb8 26.Qa7 Rc8 27.Ne4 Qb8 28.Qa4 b5 29.Qc2 Qb7 30.Nc5 Qc6 31.Qh7 Qf6 32.Qh5 Qf7 33.Ng6 Rh8 34.Qh8 (34...Qg8 35.Qg8) 1–0. Seimi Agus Eion – Tricky.1, ChessWorld.net, 2005.

2.Nc3 d5 3.d4=.

2.Nc3 Bg7 3.Bb2 Nc6 4.a3 d5 5.g3 Nh6 6.e3 e5 7.Bg2 e4 8.Rb1 Be6 9.Nge2 Bg4 10.0–0 Qd7 11.d3 ed3 12.cd3+= 0–0–0 13.d4 Bh3+= 14.f4 gf4?? 15.Nf4 Bg2= 16.Ng2 Qe6 17.Nf4 Qe3–/+ 18.Kh1 Bd4 19.Nce2?? Bb2–+ 20.Rb2 Qa3?? 21.Rb3+/– Qa2 22.Rb1?? Qc4–+ 23.b5 Nb4 24.b6 Qe4 25.Ng2 ab6 26.Rf4 Qe6?? 27.Rfb4+/– Qh3 28.Nef4+– Qd7 29.Ra1 c6 30.Rb6 Kc7 31.Rab1 Rb8 32.Qb3 Qc8? 33.Ne3 Rd8 34.Rc1 d4 35.Nc4 Qf5 36.Re1 c5?? 37.Rh6 b5 38.Na5 c4 39.Re7 Rd7 40.Rc6 Kd8 41.Nb7 Ke7 42.Qb4 Ke8 43.Nd6 Rd6 44.Qd6?? Rd8–+ 45.Qb4?? Qe4 46.Kg1 Qc6 47.Qe1 Kf8 48.Qb4 Ke8 49.Qe1 Kd7 50.Ne2 Qc5 51.Nf4 Re8 52.Qb1 d3 (53.Kg2 b4–+) 0–1. goatmilk – Seimi Agus Eion, ChessWorld.net, 2005.

2.d3 d6 3.Bg5 Bg7 4.c3 a5 5.d4 ab4 6.cb4 Nc6 7.e3 Nb4 8.Qb3 c5 9.Nf3 Be6 10.Bc4 Bc4 11.Qc4 Nf6 12.Nbd2 0–0 13.0–0 b6 14.a3 Nc6 15.Rfd1 Qc8 16.Qb5 Qc7 17.Nc4 Nd7 18.d5 Na5 19.Be7 Nc4 20.Bf8 Ba1 21.Qc4 Ra3 22.Bh6 Bf6 23.Qg4 Kh8 24.Nh4 Ne5 25.Qg3 Ng6 26.Nf5 Be5 27.Qg5 Qd7 28.f4 Bb2 29.Rd2 Ba1 30.Kf2 b5 31.h4 f6 32.Qh5 Kg8 0–1. zembelek1 (2005) – peyman_z (1990), lichess.org, 2017.

2.d3 f6 3.Bb2 (3.e4 Nh6+=) 3...h5 4.Nf3 (4.e4 e5+=) 4...Bh6 (4...e5 5.a3=) 5.e4+= e5 6.Ne5 (6.d4 Qe7+=) 6...fe5= 7.Qh5 Kf8 8.Be5 Qe7?? (better is 8...Bg7 9.Qf3 Nf6=) 9.Bh8+– Qh7 (9...Qb4 10.Kd1 Qe7 11.h4 gh4 12.Rh4+–) 10.Bc3 d6 11.Nd2 (11.h4 g4 12.Kd1 Be6+–) 11...Nc6 (11...Nd7 12.Qf3 Ke8 13.h4+–) 12.Be2 Be6 13.0–0 Bf7 14.Qf3 (14.Qh3 Ke8+–) 14...Ke7 (14...Bg7 15.e5!+–) 15.Nc4 (15.b5 Ne5 16.Qg3 Ng6+–) 15...Rf8 (15...Bg7 16.e5!+–) 16.Qh3 (16.Ne3!? Be6 17.Qg3 Bg7 18.Qg5 Bf6 19.Bf6 Nf6+–) 16...Bc4 17.dc4 Bg7 (17...Qe4 18.Bd3 Qf4+–) 18.Qh7 Rf7 1–0. varin123 – kenov, playok.com, 2012.

3.Bd3?? Ba1 4.Bc4 Nc6 –+.

3.Bd3?? e5 4.Nf3 (4.Bc4 Nf6 5.Nc3 Nc6=) 4...f6 (better is 4...g4!? 5.Ng1 d5+=) 5.0–0 g4 6.Ne5?? fe5–/+ 7.Qg4 Qe7 8.Ba3 Nf6 9.Qg6?? Qf7 10.Qg3 d6–+ 11.b5 Nh5 12.Qe3 Qf4 13.Qe2 Qg4 14.Qe3 b6 15.Be2–/+ Qg6 16.Nc3 Nf4–+ 17.g3 Ne6 18.Nd5 Bb7 19.Nc7?? Nc7–+ 20.Bc4 Qh6 21.Qd3? Nd7 22.Bb3? Ne6 23.Bd6 Nec5 24.Bc5 Nc5 25.Qc4 Qd2 26.Qf7+– Kd8 27.Rad1 (27.Rad1 Bh6 28.Qf6 Kd7 29.Qh6 Qd1 30.Rd1 Kc8 31.Be6 Kb8 32.Qf6 Ne6 33.Qh8 Bc8 34.Rd7+–) 1–0. interloper – marysson, ChessWorld.net, 2010.

2.d4 b6 3.Bg5+/– Nf6 4.Bf6 ef6 5.a3 Bh6 (5...a5 6.b5+–) 6.e3+– Rg8 (better is 6...Bb7+–) 7.Qd3 Nc6 (7...d5 8.Qh7 Rg6 9.Bd3+–) 8.Qh7 (8…Rg6 9.Bd3+–) 1–0. b4_player (1860) – NN, GameColony.com, 2002.

2.d4 d5 3.Bg5 Bg4 4.Bd2 (4.Nf3 Nf6+–) 4...e6 5.c3 (5.h3 Bf5+=) 5...Qd7 (5...Nf6!?+=) 6.h3+– Bh5 7.g4 Bg6 8.Rh2 (better 8.Nf3!?+–) 8...Bd6= 9.Rh1 Nf6 10.Bg5 (10.Nf3 Ne4=) 10...Ng8 (10...Ne4!? 11.Nf3 a5 12.ba5 Qc6–/+) 11.Be3 (11.Nf3 a5 12.ba5 Nc6+=) 11...h6 (11...a5 12.ba5 Qc6 13.Nf3=) 12.a4 Ne7 (12...h5 13.g5+=) 13.Nd2 e5 14.g5?? (14.Ngf3 e4 15.Nh4 Nbc6+–) 14...Qf5?? (better 14...Nf5 15.Nb3 Ne3 16.fe3 Qe7–+) 15.h4 (better 15.Ngf3!? Nbc6 16.de5 (16.gh6?! ed4 17.Nd4 Nd4 18.Bd4 Rh6+=) 16...Ne5 17.gh6+–) 15...hg5= 16.Bg5 Nec6? (better 16...ed4 17.Bh3 Qc2 18.cd4 Nbc6 19.Qc2 Bc2=) 17.Be3?? (better 17.b5 Na5 18.Bh3+–) 17...e4 (better 17...ed4 18.Bh3 Qf6 (worse 18...de3 19.Bf5 ed2 20.Qd2 Bf5 21.Qd5+=) 19.cd4 Nd4 20.Bd4 Qd4–/+) 18.Qb3 a6 (18...Nd7 19.Bh3 Qh5 20.a5+=) 19.a5 (19.Bh3 Qh5+–) 19...Nd7+= 20.b5 Na7? (better 20...Ne7+=) 21.ba6+– Rd8?? (21...b5 22.Bh3 Qh5+–) 22.Qb7 Qh5 (22...Nc8 23.Bh3 Qh5 24.c4+–) 23.Qa7 0–0 (23...Nf6 24.Bg5 e3 25.Be3+–) 24.Qb7 Ra8 (24...Nf6 25.Nh3 Qf5 26.Ng5+–) 25.Qc6 (25.a7 Nf6 26.Nh3 Qf5+–) 25...Bf5 (25...Nf6 26.Nh3 Qf5 27.Rg1+–) 26.Qd5 (better 26.Nh3 Nf6 27.Nf4 Bf4 28.Rg1 Ng4 29.Bf4 Qh4+–) 26...Kh7 (26...Nf6 27.Qc6 Bd7 28.Ne4 Bc6 29.Nf6 Kh8 30.Nh5 Bh1 31.Bg5+–) 27.Qc4 (better 27.Bh3 Bg4 28.Qh5 Bh5 29.Bd7 f5+–) 27...Be6 28.Qa4 (28.Qc6!? Nf6 29.Ne4 Ne4 30.Qe4 Qf5+–) 28...Ra6 29.c4 (better 29.Nh3 Kh8 30.Ng5 Rfa8+–) 29...Nb8 (29...Rfa8 30.c5 Ra5 31.Qa5 (31.cd6? Ra4 32.Ra4 Ra4–+) 31...Ra5 32.Ra5+–) 30.Qc2 (better 30.Ne4 f6 31.Qb5 Qb5 32.cb5 Bb4 33.Bd2 Bd2 34.Kd2 Ra7+–) 30...Ra5 31.Ra5 Qa5 32.f3 (better 32.d5 Bd7 33.Bd4 f5+–) 32...f5 33.f4 Rg8 (33...Nc6 34.Nh3 Nb4 35.Qc1+–) 34.Nh3 Nc6 (34...Kh8 35.d5 Qa1 36.Kf2+–) 35.Ng5 Kg6 (35...Kh6 36.Ne6 Nb4 37.Qb2+–) 36.Ne6 Kf6 (36...Nb4 37.Qc1+–) 37.Ng5 (better 37.c5 Nb4 38.Qc4 Qa1 39.Kf2 Qa2 40.Qb4 Qe6 41.cd6 cd6+–) 37...Rh8 (37...Nb4 38.Qb2 Qa2 39.Nde4 fe4 40.Ne4 Ke7 41.Qa2 Na2 42.c5+–) 38.c5 Nb4 39.Qc4 (39.cd6? Nc2 40.Kf2 Ne3 41.Nde4 fe4 42.Ke3 Qa3 43.Kf2 e3 44.Kf3 cd6–+) 39...Qa1 40.Kf2 Qa8 41.Qe6 (41.Qf7) 41...Kg7 42.Qf7 Kh6 1–0. patrick317 – sally18, gameknot.com, 2017.

2.d4 d6 3.h3 (3.Bg5!? h6 4.Bh4+/–) 3...e6 4.Nf3 Nf6 (4...f6!?+=) 5.Bg5+/– h6 6.Bf6 Qf6 7.e3 Nc6 8.Bb5 (8.b5 Ne7+/–) 8...a6 (8...Bd7!?+=) 9.Bc6+/– bc6 10.0–0 (10.Nbd2 Rg8 11.Rg1 d5+/–) 10...Rg8 11.Nc3 Qg6 12.Nh4 (12.Ne1 e5+=) 12...Qg7 (12...Qg5 13.Qg4 Qg4 14.hg4=) 13.Qf3 (better is 13.g3!?+=) 13...d5=+ 14.a3 (better is 14.g3!? Bb4 15.Ne2=+) 14...Be7–+ 15.Qg3 (better is 15.Nf5 ef5 16.Rfb1–/+) 15...Qg3?? (better is 15...Bh4 16.Qg7 Rg7–+) 16.fg3= Rg3 17.Nf3 Rg8 18.Ne5+= a5 19.Nf7?? Ba6 20.Rf2 Bh4? 21.Rf3+– Ke7 22.Nh6 Rg3 23.Rg3 Bg3 24.ba5 Rf8 25.Ng4 Kd7 26.e4 de4 27.Ne4 Rf1 28.Rf1 Be2 29.Rf7 Kc8 30.Ng3 e5 31.Ne5 Bd1 32.c4 Ba4 33.a6 Kb8 34.d5 Ka7 35.Rc7 (35...Ka6 36.d6 c5 37.d7 Bb5 38.d8Q Bc6 39.Rc6 Kb7 40.Rb6 Ka7 41.Nc6) 1–0. iboyd (1950) – scmorgan, net–chess.com, 2006.

2.d4 Nf6 3.Nc3 (3.Bg5 Ne4 4.Bh4 d5+/–) 3...b6? (better is 3...h6!?=) 4.Bg5+/– d5 (4...e6 5.a3+/–) 5.e3 (5.Bf6 ef6 6.a3 c5 7.dc5 d4+/–) 5...Ne4 (5...Bg7 6.Nf3+/–) 6.Ne4+– de4 7.Qh5 Bg7 (7...Qd5 8.c4 Qf5 9.Be2+/–) 8.Bb5 (better is 8.Bc4 0–0 9.c3+–) 8...Kf8? (8...c6!? 9.Bc4 0–0+–) 9.Ne2 (9.Bc4 Qe8 10.Bd5 c6 11.Be4 e5+–) 9...c6 (9...Ba6 10.Ba4+–) 10.Bc4 b5?? (10...Qe8 11.Bh6 b5+–) 11.Qf7# 1–0. pierre – poff, internet, 2010.

2.e4 a6 3.d4 a5 4.ba5 Ra5 5.Bd2 Ra4 6.c3 Ra5 7.c4 Ra8 8.Bg5 h6 9.Bf4 e6 10.Be5 f6 11.Bg3 Na6 12.c5 d6 13.Ba6 ba6 14.Nc3 d5?? (better is 14...Qd7+–) 15.ed5 (better is 15.Qh5 Ke7 16.ed5+–) 15...ed5 (15...Qd7+–) 16.Qh5 Kd7 17.Nd5 Bb7 18.Nc7 Rc8 19.Qf7 Be7?? 20.Rc1 Rc7+– 21.Bc7 Qc7 22.Kf1 Qc6 23.d5?? Qb5?? 24.Ne2+– Qb2 25.d6 Qe5 26.de7 Ne7 27.f4 Qe4 28.Rg1 Bd5 29.Qf6 Rg8 30.Qd6 Ke8 31.Nc3 Qd3 32.Ne2 Rg2?? 33.Rg2+– Bg2 34.Kg2 Qe2–/+ 35.Kg1 Qe3 36.Kg2 Qc1 37.Qe5 Qd2 38.Kg3 Qc2 39.Qh8 Kd7 40.Qh6?? Nf5–+ 41.Kg4 Nh6 42.Kg5 Qh2 43.f5 Nf7 44.Kf6 Qa2 45.Kg6 Kc6 46.f6 a5 47.Kf5 Qd5 48.Kg6 a4 49.Kg7 a3 50.Kf8 a2 51.Kg7 a1Q 52.Kf8 Qf6 53.Ke8 Qdd8# (53...Qfd8#) 0–1. dunk0104 – Eries, ChessWorld.net, 2012.

2.e4 e6 3.Nh3 (3.a3 a5+=) 3...h6 (3...e5 4.Bb2 d6 5.Ng1=) 4.f4 (4.Bb2!? Nf6 5.e5+=) 4...gf4 5.Nf4 d6 (5...Bb4 6.Bb2 Rh7 7.Be2=) 6.Bb5 c6 7.Be2 b5 (7...Nf6 8.Nc3=) 8.Nc3 (8.a4 e5 9.Nd3 ba4+=) 8...a6 (8...a5 9.Rb1=) 9.Bh5 (9.a4 d5+=) 9...Qe7 (9...Nf6 10.0–0=) 10.Rf1 (10.a4 Bg7+=) 10...Nf6 11.d3 (11.Qf3 Bg7=) 11...Nh5 (11...a5 12.Rb1=+) 12.Nh5= Nd7 13.Qg4 (13.a4 ba4 14.Qf3 f5=) 13...Bb7 (13...a5 14.ba5 Ra5 15.Ne2=) 14.Ng7 (14.Bb2 Qg5 15.Qe2 e5=) 14...Bg7 (better is 14...Kd8!? 15.Nh5 a5=+) 15.Qg7+/– 0–0–0 (15...Rf8 16.Qh6 d5 17.Rb1+=) 16.Rf7 Qe8 17.Bh6 (better is 17.Re7 Rg8 A) < 18.Bh6 Qh5 (< 18...Rg7 19.Re8 Rg2 20.Rd8 Kd8 21.Rc1=) 19.Rd7 Rg7 20.Rd8 Kd8 21.Bg7 Qg5–/+; B) 18.Re8 Rg7 19.Re6 (< 19.Bh6 Re8 20.Bg7 Rg8+=) 19...Rg2 20.Rh6+/–) 17...Rg8= 18.Qh7 Rh8 19.Qg6?? (better is 19.Qg7 Rg8 20.Re7 Rg7 21.Re8 Rg2 22.Rd8 Kd8 23.Rc1=) 19...Ne5–+ 20.Qg4 Ng4 21.Bg5 Qf7 22.Kd2 Qf2 23.Kc1 Rde8 24.Kb2 Qg2 25.h4 Ref8 26.Rd1 Rf1 27.Bd2 Rd1 28.Bg5 Rf8 (29.Nd1 e5–+; better is 28...Rd3! 29.a4–+) 0–1. crystal palace – goatmilk, ChessWorld.net, 2005.

2.e4 h5 3.Bb2 Rh7 (3...Nf6 4.Nc3+=) 4.e5 (4.Nc3 a6+–) 4...f5 (4...d6 5.Nc3+=) 5.Nf3 (5.Nh3 e6+=) 5...g4 6.Ng5 Rh6 7.h4 e6 8.a3 Be7 (8...Ne7 9.d4+–) 9.d4 Bg5 (9...a5!? 10.b5 d6 11.ed6 cd6+–) 10.hg5+– Qg5 11.Bc1 f4 (11...Qg6 12.Bh6 Nh6 13.Nc3+–) 12.g3 (12.Nc3 Ne7+–) 12...Qf5 (12...Rh8+–) 13.Bd3 Qf7 14.Bf4 Rh8 15.Nc3 Nc6 (15...Ne7 16.Ne4 Nd5 17.Bg5+–) 16.d5! Nd4? (16...ed5 17.Nd5) 17.Be4 c6 (17...c5 18.dc6! Nc6+–) 18.Qd4 cd5 (18...Ne7 19.de6 Qe6 20.0–0–0+–) 19.Nb5 Kd8 (19...Kf8 20.Nd6 Qg7+–) 20.Bg5 Nf6 21.Bf6 (21.Bf6 Qf6 22.ef6 b6 23.f7 d6 24.Qh8 Ke7 25.f8Q Kd7 26.Qd6) 1–0. DEFFM – GuestXCBG, freechess.org, 2018.

2.f3 e5 3.a3 Bg7 4.Nc3 d5 5.e3 Bf5 (5...d4 6.Ne4=+) 6.Nge2 Nh6 (6...Be6 7.Ng3=+) 7.Ng3 Be6 8.Bb5 c6 9.Bd3 e4 (9...f5!?=) 10.fe4+= de4 11.Nce4?? (11.Nge4 Bg4 12.Be2 f5 13.Bg4 Ng4+/–) 11...0–0 (better is 11...Ba1!? 12.Qh5 Nf5 13.Nf5 Bf5 14.0–0–+) 12.c3?? (better is 12.Nc3+=) 12...Qd3–+ 13.Nf2 Qc4 14.Nh5 Be5 15.Bb2 Qd5 16.e4 Qb5?? 17.c4= Qc4?? 18.Be5+– Nd7 19.Bc3?? f6+= 20.Qf3 g4?? 21.Qe3 g3?? 22.Qh6 gf2 23.Kf2 Rf7 24.Rhf1 Ne5? 25.Nf6?? Rf6!–+ 26.Qf6 Ng4 27.Kg1 Nf6 28.Bf6 Qe4 29.Rae1 Qd5 30.d4?! Bg4 31.Be5?? Re8 32.Rf4 Bh5 33.Re3 Qg2 34.Kg2+– Re6 35.Rg3 Rg6 36.Rg6 hg6 37.a4 Be2 38.Rf6 Bd3 39.Rd6 Bc2 40.a5 Be4 41.Kg3 Kh7 42.Rd7 Kg8 43.Rb7 c5 44.dc5 Bb7 45.Kf4 Kf7 46.Kg5 Ba6? 47.h4 Bb5 48.h5 Be8?? 49.hg6 Kg8 50.g7 Bd7 51.Kf6 Be8 52.Ke7 (52…Bc6 53.Kd6+–) 1–0. goatmilk – Tricky.1, ChessWorld.net, 2005.

2.Nf3 e6 3.d3 Be7 4.Bg5?? Bg5–+ 5.e4 Bf6 6.e5 Bg7 7.d4 Ne7 8.c3 d5 9.Ng5 h6 10.Nh3 Ng6 11.Qg4 Nd7 12.Bd3 Qh4 13.Qg3 Qg3 14.fg3 Nb6 15.0–0 0–0 16.Nf4 a5 17.Bg6 fg6 18.Ng6 Rf1 19.Kf1 Nc4 20.h4 Bd7 21.Ke1 Kf7 22.Nf4 Rf8 23.Nd2 Nd2 24.Kd2 ab4 25.cb4 Be8 26.Rf1 Ke7 27.g4 Kd7 28.Kc3 Bg6 29.g3 Be4 30.g5 hg5 31.hg5 Rf5 32.Nh5?? Rf1 33.Ng7 Rf3 34.Kb2 Rg3 (35.Nh5 Rg5 36.Nf6 Ke7–+) 0–1. Seimi Agus Eion – Arran, ChessWorld.net, 2005.

2.Nf3 g4 3.Bb2 f6 4.Nh4 e5 5.a3 d5 6.e3 a5 7.Be2 Nh6 8.b5 Be6 9.f3 Rg8 10.fg4 Ng4 11.0–0 Nd7 12.Nf5 Bf5 13.Rf5 Nh6 14.Bh5 Ke7 15.Rf2 Ke6 16.Nc3 f5 17.d4 e4 18.Be2 Nf6 19.Qd2 Bd6 20.Bd1?? (Better is 20.g3=) 20...Nhg4 21.Bg4 Ng4 (21...Rg4?! 22.Na4=; 21...fg4?! 22.g3=) 22.g3 Nf2 23.Qf2 Qg5 24.Rf1 c6 25.bc6 bc6 26.Na4 Rgb8 27.Kh1 Qh5 28.Qg2 Rb5 29.Kg1 Rg8 30.Bc1 Kd7 31.Nc3 Rb7 32.Na4 Rbb8 33.Qd2 Rb5 34.Nc3 Bg3 35.Kh1?? Rbb8 36.Qe2 Qh3 37.Na4 Bh2! 38.Nc5 Ke7 39.Qg4 Rg4 40.Rf5 Qg2# 0–1. Gnuchess 4 – Gnuchess 4, 2000.

2.g3 e5 3.Bb2 Qe7 4.Bg2=.

2.g3 f5 3.c4 Bg7= 4.Nc3 Bc3 5.dc3+= b6? 6.Bg5 h6 7.Bf4 d6 8.Bg2 c6 9.Nf3 Nf6 10.Nh4 Ng4 11.Nf5?? Bf5=+ 12.c5 bc5 13.e4–/+ Be4?? 14.Be4+/– Qb6?? 15.Qg4+– Nd7 16.Qg7 Rf8 17.Bg6 Kd8 18.0–0 e5 19.Be3 Kc7 20.Qh6 Rh8 21.Qg5 Qb5 22.Bf5 Rag8 23.Qe7 Rd8 24.Qf7 Rhf8 25.Qg6 Qc4 26.Bg5 Rde8 27.Bd2 Rg8 28.Qh7 Rd8 29.Bd7 Kb6 30.Bf5 Rh8 31.Qg6 Rdg8 32.Qe6 Qh4 33.bc5 dc5 34.Bh3! Qd8 35.Rab1 Kc7 36.Qe5 Qd6+– 37.Qh8 Rh8 38.Bf4 Rh3 39.Bd6 Kd6 40.Rb7 a5 41.Ra7 Rh5 42.Ra5 (42...Rd5 43.f4+–) 1–0. goatmilk – crystal palace, ChessWorld.net, 2005.

2.h3 e5 3.Bb2 Bb4 4.Be5=.

2.h3 h6 3.Bb2 f6 (3...Nf6 4.e4=) 4.b5 (4.e4 d6+/–) 4...Bg7 (4...d5 5.e4 de4 6.Qh5 Kd7 7.Bc4+=) 5.e4+/– d5 (5...h5 6.Bc4+/–) 6.ed5 (6.Qh5 Kf8+/–) 6...Qd5+= 7.Qf3 (7.Qh5 Kd8+=) 7...Qe6 (7...Qf3 8.Nf3 (worse is 8.gf3 e5–/+) 8...e5 9.Bc4+=) 8.Be2 h5 (8...a6 9.Qh5 Kd8 10.Qg6+=) 9.Nc3 Bd7?? (better is 9...a6+=) 10.Qb7+– Nh6 11.Qa8 0–0 12.Qa7 c6 13.b6 Nf5 14.Nf3 Kh7 15.Na4 Rd8 16.Rb1 Kg6 17.Qa5 h4 18.b7 Nd6 19.Qd8 Nb7 20.Qb8 Nd6 21.0–0 Ne4 22.Qb4 c5 23.Qc4 Qd6 24.Qe4 f5 25.Qc4 Bb2 26.Rb2 f4 27.Qg8 Kf6 28.Qg5 Kf7 29.Ne5 Ke8 30.Qg8# 1–0. glo1 – pieeater, ChessWorld.net, 2009.

2.a3 f6

3.Bb2 Bg7 4.d4 a5 5.Nf3 ab4 6.ab4 Na6 7.b5 c5 8.ba6 ba6 9.dc5 Qc7 10.Bd4 Bb7 11.Nc3 e6 12.e3 Ne7 13.Ba6 Ba6 14.Qe2 Be2 15.Ra8 Kf7 16.Rh8 Bf3 17.Rh7 Bg2 18.Rg1 Bf3 19.h4 gh4 20.Rgg7 Ke8 21.Re7 Kd8 22.Rd7 Kc8 23.Rc7 Kd8 24.Rcd7 Ke8 0–1. mfyyyy – EvgeniyR, lichess.org, 2018.

3.e4+= Nh6 4.c4 Bg7 5.Bb2 e5 6.Nc3 d6 7.d4 Nf7 8.Nf3 Bg4 (8...g4!? 9.Nh4 ed4 10.Qd4 Ne5+=) 9.Be2+/– Nc6 10.Ne5 Be2 ½–½. Muhren,Melissa – Ineke,Joyce I, Hengelo U16 op, 2004.

2.a3 Nf6

3.Bb2 Bg7 4.d3 e6 5.Nd2 d6 6.Ngf3 h6 7.g3 Nbd7 8.Bg2 a6 9.0–0 0–0 10.c4 Re8 11.e4 (11.Nd4 Nf8+=) 11...e5 (11...Ne4!? 12.Bg7 Nd2 13.Nd2 Kg7+=) 12.d4 Nh7 13.de5 Ne5 14.Ne5 Be5 15.Be5 Re5 16.Rc1 Bd7 17.Re1 Qc8 18.c5 Bh3? (better is 18...dc5 19.Nf3 Re7 20.Rc5 Be6+=) 19.cd6+– Bg2 20.Kg2 Qd7 (20...c6 21.Nc4 Re6 22.Nb6+–) 21.Rc7 (better is 21.Nf3 Re6 22.dc7+–) 21...Qd6 22.Rb7 Qc6 23.Nf3 Ree8 (23...Re4!? 24.Re4 Qe4+–) 24.Qd7 Qc4? (24...Qd7 25.Rd7 g4 26.Nh4+–) 25.Rc1 (25.Qf5 Qe6 26.Nd4 Qf5 27.Nf5+– (27.ef5? Re1 28.h3 Ra1–+)) 25...Qb3?? (25...Qe6 26.Rcc7 g4 27.Ne5 (27.Qf7?! Qf7 28.Rf7 gf3 29.Rf3 Re4+/–) 27...Qd7 28.Nd7+– (28.Rd7?! Re5 29.Rf7 Ng5 30.Rg7 Kf8+=)) 26.Rcc7 Rf8 27.Qd6 Rad8 28.Qh6 g4 29.Ng5 Ng5 30.Qg5 Kh8 31.Qg4 Qd3 32.Rf7 Rf7 33.Rf7 Qd4 34.Qh5 Kg8 35.Qh7# 1–0. golfx – milanio, kurnik, 2011. (=1.a3 g5 2.b4 Nf6)

3.Bb2 Bg7 4.d3 h6 5.Nd2 e6 6.g3 d6 7.Bg2 a6 8.Ngf3 Nbd7 9.h4 g4 10.Nd4 Nd5 (10...Nb6 11.c4=) 11.c3 (better is 11.Ne6!? Bb2 12.Nd8+/–) 11...N7f6 12.e4 e5 13.ed5 ed4 14.cd4 0–0 15.0–0 h5 16.Qb3 Bf5 17.Ne4 Re8 18.Rfe1 c6? (better is 18...Qd7+=) 19.dc6 Ne4? (better is 19...bc6 20.Nf6 Qf6 21.Bc6 Re1 22.Re1 Rb8+–) 20.de4 Be6 21.d5 Bc8 22.Bg7 Kg7 23.Qc3 Qf6 24.Qf6 Kf6 25.Rac1 Ke5 26.cb7 Bb7 27.Rc7 Rab8 28.Rf7 Rf8 29.Rh7 Rh8 30.Re7 Kf6 31.Re6 Kf7 32.Rd6 Rhe8 33.Rd7 Re7 34.Re7 Ke7 35.e5 Rd8 36.d6 Ke6 37.Bb7 1–0. golfx – milanio, kurnik, 2011. (=1.a3 g5 2.b4)

2.Bb2 b5??

3.a4 c6?? 4.Bh8+– f6 (4...ba4 5.Ra4 d5 6.e3+–) 5.e3 e5 (5...Nh6 6.Qh5 Nf7 7.ab5 cb5+–) 6.Qh5 Ke7 7.Qh7 Ke6 (7...Kd6 8.Qg8 Na6 9.h4+–) 8.ab5 (better 8.Qg8!? Kd6+–) 8...Bh6 (8...Be7 9.e4 d5 10.bc6+–) 9.Bc4 (better 9.b6 Na6 10.Ba6 Ba6 11.Ra6 ab6 12.Ra8 Qa8+–) 9...d5 10.Bb3 a6 (10...Qf8 11.e4 Ne7 12.bc6 Nbc6 13.ed5 Kd6 14.Nc3+–) 11.e4 Qd7 (11...Qf8 12.bc6 Kd6 13.ed5 Ne7+–) 12.Qg8 Kd6 13.Bf6 (better 13.bc6 Nc6 14.Qg6 Kc7 15.Qh6 Qg4 16.Qg7 Bd7 17.ed5 Nb4 18.Qf6 Qg2+–) 13...Kc7 14.Be5 Kb7 15.bc6 Nc6 16.Bd5 Kb6 17.c4 (better 17.Qg6 Bf8 18.b5 Bb7 19.bc6 Bc6+–) 17...Bb7 18.Qg6 Bf8 19.c5 Ka7 20.b5 Ne5 21.Ra6 (21.Qa6 Kb8 22.Qa8 Ba8 23.Ra8 Kc7 24.b6) 21...Ba6 22.Qa6 (22.Qb6) 22...Kb8 23.Qb6 (23.Qa8 Kc7 24.b6) 23...Kc8+– 24.Be6 (24.Be6 Ra1 25.Ke2 Rb1 26.Nf3 Rb5 27.Bd7 Nd7 28.Qb5+–) 1–0. DEFFM – GuestBPLK, freechess.org, 2018.

3.a4 Nf6 4.ab5 Bg7+–.

3.Bh8 f6 4.e4 Na6 5.Qh5 1–0. pierre – poqir, internet, 2010.

3.Bh8 f6 4.e4 e5 5.Qh5 Ke7 6.Qh7 Ke8 (6...Kd6 7.Qg8 Bb7 8.Nc3+–) 7.Qg8 Qe7 8.Bb5 Qf7 9.Qf7 Kf7 10.Bc4 Kg6 11.h4 Nc6 12.hg5 (better is 12.h5 Kh6 13.Bf6 Nb4+–) 12...d6 13.Bf6 Rb8 14.Nf3 Nb4 15.Nh4 Kh7 (15...Kh5 16.Nf5 Kg6 17.Ne7 Be7 18.Rh6) 16.Nf5 Kg6 17.Ne7 Be7 18.Rh6 1–0. Coleman,Michael – Kaminski,Thomas, IECC, 1998.

2.Bb2 Nc6??

3.b5 Na5?? 4.d3 (better is 4.Bh8 Nf6 5.d3+–) 4...Nf6+= 5.c4 (5.Qd2 b6+=) 5...e6 (5...a6 6.e4=) 6.Bc3 c6 7.Qd2 b6 8.Qb2 (8.e4!?+/–) 8...Bg7+= 9.g4 (9.e4 d6+=) 9...Qe7 (9...Bb7!?=) 10.Bg2 e5 11.Be4?? Bb7?? 12.Be5= Rg8 13.Nd2 0–0–0?? 14.Bc3 Ne4 15.de4 Qe6?? 16.f3?? Nc4? 17.Nc4+– Qc4 18.Kf2?? Bf8 19.e3 cb5 20.Rc1 Bc5 21.Bb4 Qd3 22.Bc5 d6?? 23.Bd4 Kb8 24.Rc3 Qd1 25.Kg2 b4 26.Rc4 a5 27.Kh3 Qf1=+ 28.Kg3 Qc4 29.Ne2 f5 30.ef5 d5 31.Rc1 Qb5 32.Be5 Ka7 33.Nd4 Qd7 34.f6?? h5?? 35.Nf5?? hg4=+ 36.Kg4? Bc8?? 37.Rd1 Qf5–+ 38.Kg3 g4 39.Bf4 gf3 40.Kf2 Rg2 41.Ke1 Rb2 42.Bc7 Qh3 43.Be5 Re2 0–1. boldeagle – Tricky.1, ChessWorld.net, 2005.

3.b5 Nf6 4.bc6 bc6 5.e3 Rb8 6.Bf6 (6.Bd4 a6+–) 6...ef6 7.Bc4 Rb4 8.d3 (better 8.Be2+–) 8...Rc4? (8...d5 9.Bb3 Qd6+–) 9.dc4 Bb4 (9...Bg7 10.Nf3+–) 10.c3 Bd6 11.Nf3 Ba6 (11...Be5 12.h4+–) 12.Nbd2 c5 13.0–0 c6 (13...Bb7 14.Rb1 Bc6 15.Qc2+–) 14.Ne4 Bf8 (14...Be7 15.Qa4 Qc8 16.Rfd1+–) 15.Rb1 Qa5 (15...d5 16.Qa4 de4 17.Qc6 Qd7 18.Rb8 Ke7 19.Qc5 Qd6 20.Qa7 Qd7 21.Qa6 Bh6 22.Qa3 Qd6 23.Rb7 Ke6 24.Nd4 Qd4 25.cd4 Kf5 26.Rf7 Bf8 27.Rf8 Rf8 28.Qf8 Ke6 29.Qg8 Kd7 30.Rb1 Kc7 31.Qb8 Kd7 32.d5 f5 33.Rb7) 16.Rb8 Ke7 17.Qd6 1–0. Agiant – MonsieurCandy, lichess.org, 2020.

3.b5 Nf6 4.bc6 dc6 +–.

3.Bh8 Nb4 4.a3 Nc6 +–.

3.Bh8+– Nb4 4.e3 f6 (4...d5+–) 5.Qh5 1–0. Taulien,Hans_Juergen – Elsner,David, remoteschach.de, 2003.

2.b5 Bg7

3.c3 a6 4.ba6 Na6 5.e3 b6 6.Bb2 Bb7 7.a4 h5 8.Nf3 g4 9.Nd4 e5 10.Nf5 Qf6 11.Ng7 Qg7 12.c4 f6 13.Rg1 Nc5 14.d4 Ne4 15.d5 Nh6 16.Bd3 Ng5 17.Nc3 0–0 18.f3 f5 19.h4 gh3 20.gh3 e4 21.Kf2 Kh7 22.f4 Nh3 23.Ke2 Ng1 24.Kd2 Qg2 25.Be2 Ne2 26.Ne2 Ba6 27.Qc2 Ng4 28.Rg1 Qf3 29.Rg3 Qf2 30.Qc3 Rg8 31.Rh3 h4 32.Rh1 Rg6 33.Re1 Rag8 34.Rh1 c6 35.dc6 dc6 36.Re1 b5 37.cb5 cb5 38.Qc7 R6g7 39.Qc6 Rg6 40.Qd7 Kh6 41.Qd4 ba4 42.Rh1 Ne3 43.Rh4 Qh4 44.Qe3 Rg3 45.Ng3 Rg3 46.Qb6 Rg6 47.Qf2 Qf2 48.Kc3 Qe3 49.Kb4 Rb6 50.Ka5 Qc5 0–1. ateistawolnyx – peersm, kurnik, 2014.

3.c3 c5 4.bc6 Nc6 5.Nf3 (5.d4 g4=) 5...h6 (5...g4 6.Nd4=+) 6.Ba3 (6.e4 d5 7.ed5 Qd5=+) 6...d5 7.d4 Bd7 8.h3 Rc8 9.Qc2 (9.e3 Nf6=) 9...Qa5 (9...Nd4 10.Nd4 Bd4–/+) 10.Nfd2? (Better is 10.e3=) 10...Nd4!–+ 11.Qc1?? (11.cd4 Rc2) 11...Nf6 (11...Ba4 12.Bb4 Qb4 13.a3–+ (13.cb4?? Rc1#)) 12.Bb4?? (Better is 12.Qb2 Nb5 13.Bb4–+) 12...Qb4!! 13.e3 (13.cb4 Rc1#) 0–1. pinecrest1981 – henrigrob, Live Game Caissa's Web, 2004.

3.d4 c5 4.Bg5 cd4 5.Qd3=.

2.c3 b5

3.d4 d5 (3...a5!?+=) 4.Bg5+– Bf5 5.Be3 (5.Nf3!? a5 6.e3+–) 5...Nf6 (5...a5 6.a3+=) 6.Nd2 (6.a4 c6+=) 6...Bg7 (6...a5 7.a3+=) 7.f3 (7.a4!? c6 8.h3+–) 7...a6 (7...a5!? 8.g4 Bd7+=) 8.g4+– (8.g4 Bd7 9.Nh3+–) 1–0. patrick317 – warrior23, gameknot.com, 2018.

3.e4 c6 4.Qh5 (4.d4!?+/–) 4...h6 5.Bb2 Nf6 6.Qf3 e6 (6...g4 7.Qe2=) 7.Na3 (better is 7.c4 Be7 8.e5+/–) 7...Qc7?? (better is 7...g4 8.Qf4 d6=) 8.Qf6+– Rg8 9.Nf3 (better is 9.Nc2+–) 9...Bg7–+ 10.Qg7 Rg7 11.c4 g4 (11...Rg8 12.cb5 g4–/+) 12.Nh4? (better is 12.Bg7 gf3 13.gf3+= (13.Bh6? Qe5 14.0–0–0 Qe4–+)) 12...Ba6?? (12...Rg5 13.cb5 Qf4 14.d3 cb5 15.Be2–+) 13.c5?? (better is 13.Bg7 bc4 14.e5+/– (14.Bc4?! Qf4 15.Ba6 Na6+=; 14.Bh6?! Qd8+=)) 13...Rg8–+ 14.Bd4 e5 15.Be3 h5 16.Be2 d5 17.ed5 e4 18.d6 Qd7 19.0–0 Qe6 20.d3? Nd7 21.d4 Qf6 22.g3 Nf8 23.Nc2+= Ng6 24.Ng6 Rg6 25.a4 h4 26.gh4 Qh4 27.ab5 Bc8?? 28.bc6+– Be6 29.c7 g3 30.fg3 Qh3?? 31.Bb5 Kf8 32.Bc6 Re8?? 33.Ra7 Rg3= 34.Kh1?? Qf1 35.Bg1 Qg2# (35...Rg1) 0–1. WirralBoy – primemover, ChessWorld.net, 2012.

2.c4 Bg7

3.Nc3 h6 (3...d6 4.a3=) 4.Qc2 (4.e3 d6=) 4...d6 5.a4 (5.e3 Nf6=) 5...Nc6+= 6.Ba3 Bg4 (6...Nf6 7.e3+=) 7.Nf3 (7.e3 a5 8.b5 Nb4=) 7...Qd7+= 8.h3 (8.Qd3 Bf5 9.e4 Qe6+=) 8...Bf5 (8...Bf3 9.ef3 0–0–0 10.Qd3+=) 9.d3 Nf6 (9...0–0–0 10.e4 g4 11.Nh2+=) 10.Qb3 (10.b5 Nd8=) 10...0–0–0 11.a5 (11.Bb2 g4 12.hg4 Bg4+=) 11...e5 (11...g4 12.hg4 Bg4 13.Bb2+=) 12.e4= Be6 (12...g4 13.hg4 Bg4 14.b5+=) 13.Be2 (13.b5 Nd4 14.Nd4 ed4+=) 13...g4 (13...Ne7 14.b5+=) 14.hg4 Ng4 15.g3 Nd4 16.Nd4 ed4 17.Nb5?? Qb5?? 18.Bg4 Qd7 19.Be6 fe6 20.b5+= e5 21.Rb1 Rdf8 22.Rb2 Rf3+= 23.Rh2 h5 24.a6 b6+= 25.Bb4 Qg4 26.Rh4+= Qe6 27.Bd2? Kd7 28.c5 dc5 29.Qd5?? Qd5–+ 30.ed5 Kd6 31.Ke2 Rf5 32.Rb1 Rh7?? 33.g4= Rf7 34.g5 Rh8–/+ 35.g6 Rf5 36.Rg1 Kd5 37.f3 c6 38.Rb1 cb5 39.Rb5 Rf6 40.f4 ef4 0–1. MissLayla – pieeater, ChessWorld.net, 2010.

3.d4 b6 4.e4 (4.Bg5 Nc6 5.Nf3 Nb4=) 4...e6 (4...c5 5.Ne2= (worse 5.Bg5 Bd4 6.Nd2 h6–/+)) 5.e5 (5.Nf3 g4 6.Ne5 Be5 7.de5+=) 5...Ne7 (5...d6 6.Nf3 g4 7.Nfd2=) 6.a3 (6.Bg5 Bb7+–) 6...Nec6 (6...d6 7.Qf3 c6 8.Qe4 de5 9.de5=) 7.f4 (7.b5!? Na5 8.h4 gh4 9.Qg4+–) 7...gf4+= 8.Bf4 f6 (8...d6 9.Qg4 Rg8 10.Nf3 de5 11.de5+=) 9.Qh5+– Ke7 10.d5 (10.Nf3!?+–) 10...ed5 (10...Ne5 11.Be5 fe5 12.de6 de6 13.Qg4=) 11.cd5 (11.Nc3 Ne5 12.Nd5 Kd6 13.Qg4+–) 11...Nd4?? (better 11...Ne5!? 12.Kf2 Qf8=+) 12.Bd3 (better 12.d6 cd6 13.ed6 Kf8 14.Bh6+–) 12...fe5?? (better 12...Qe8 13.Qg4 Kf8+=) 13.Be5+– Qf8 14.Nf3 (better 14.Qh4 Ke8 15.Bd4 Bd4 16.Qd4+–) 14...Nf3+= 15.gf3 d6 16.Qg5 Bf6 17.Bf6 Qf6 18.Qf6 Kf6 19.Nc3 Bb7 20.0–0–0 Nd7 21.f4 a5 22.b5 Nc5 23.Ne4 Ne4 24.Be4 Rhe8 25.Rde1 (25.Rhe1 Re7 26.Bg2 Rae8 27.Re7 Re7+=) 25...h5?? (better 25...Re4 26.Re4 Bd5–/+) 26.Rhg1+– Rg8 27.Rg8 (27.Kd2 Rae8 28.Rg8 Rg8+=) 27...Rg8+= 28.f5 (better 28.Kd2!?+=) 28...Rg4 (28...Re8 29.Kd2–/+) 29.Kc2 h4 (better 29...Bc8 30.Bd3 Rf4–/+ (30...Bf5? 31.Rf1+–)) 30.Kd2? (30.Kd3!?=+) 30...Bc8 (30...Bd5 31.Bd3 Bc4 32.Bc4 Rc4 33.Re8–+) 31.h3 (31.Bf3 Rc4 32.Re4 Re4 33.Be4 Bf5 34.Bg2–+) 31...Rg3–+ 32.Re3 (better 32.a4–+) 32...Bf5 33.Bf5 (33.Rg3 hg3 34.Bg2 Kg5–+) 33...Kf5 (33...Re3!? 34.Bd7 Ra3 35.Kc2–+) 34.Rg3 (34.Re7–+) 34...hg3 35.Ke1 Kg5 36.Kf1 Kh4 37.Kg2 a4 38.Kh1 Kh3 39.Kg1 Kg4 (better 39...g2 40.Kf2 Kh2 41.Kf3–+) 40.Kg2 Kf4 41.Kf1 Kf3 42.Kg1 (42.Ke1 g2 43.Kd1 g1Q 44.Kc2 Qc5 45.Kb2 Qf2 46.Kb1 Ke3 47.Ka1 Kd3 48.Kb1 Kc3 49.Kc1 Qe1) 42...g2–+ 43.Kh2 Kf2 44.Kh3 g1Q (44...g1Q 45.Kh4 Qg6 46.Kh3 Qg3) 0–1. pat_cash87 – truemove2002 (1615), lichess.org, 2020.

3.d4 Nc6 A) 4.Bg5? Bd4 (4...Nb4?! 5.Na3=+; worse 4...Nd4 5.Nc3–/+) 5.Na3 Nf6–+; B) 4.Bb2 Nb4 5.Qd2=.

2.d3 Bg7

3.c3 Nc6 4.g3 (4...g4 5.Bg2=; 4.d4 h6=). goatmilk – magne, ChessWorld.net, 2005.

3.c3 g4 4.e4 d5 5.Be2 de4 6.Bg4 ed3 7.Bc8 Qc8 8.Qd3 Nc6 9.Bf4 Qe6 10.Ne2 Nf6 11.0–0 Nd5 12.Qb5 a6 13.Qd3 Ncb4 14.Qd2 0–0–0 15.cb4 Ba1 16.Na3 Nf4 17.Nf4 Rd2 18.Ne6 Ra2 19.Nc2 Rc2 20.Nd4 Bd4 21.g4 Rg8 22.h3 h5 23.Kg2 hg4 24.hg4 Rg4 25.Kf3 f5 26.Rd1 Rf2 0–1. Seimi Agus Eion – marekt, ChessWorld.net, 2005.

3.c3 h6 4.e4=.

3.c3 h6 4.Nf3 Nc6 5.d4 d5 6.e3 g4 7.Nfd2 e5 8.Bb5 Bd7 9.Bc6 Bc6 10.Qg4 Qg5 11.Qg5 (11...hg5 12.Nf3+=). Seimi Agus Eion – jelgava, ChessWorld.net, 2005.

2.d4 Bg7

3.Bg5+/– f6 4.Bd2 d6 (4...f5 5.e3 Nf6 6.Nf3+/–) 5.e4+– h5 6.Be2 Nh6 (6...h4+–) 7.Bh5 Kf8 (7...Nf7 8.Be3+–) 8.Nf3 Qd7 (8...e5 9.c3 f5 10.Qb3+–) 9.c3 Qc6 (9...Kg8 10.Qe2+–) 10.d5 Qc4 11.Nd4 Qd3 12.Qe2 Qe2 13.Ne2 Bg4 (13...Ng4 14.Nf4 Ne5 15.Be3+–) 14.Bg4 Ng4 15.Nf4 f5 (15...Kf7+–) 16.f3 Ne5 (16...Nf6 17.Ne6 Kf7 18.Nc7+–) 17.Ne6 Kf7 18.Nc7 (worse is 18.ef5 Nbd7 19.a4 Nf6+–; 18.Ng7?! Kg7 19.ef5 Nbd7+–) 18...Nd3 (18...Nbd7 19.Na8 Ra8 20.a4+–) 19.Ke2 Nd7 (19...Nb4 20.Na3 Nd7 21.Na8+–) 20.Kd3 Rac8 (20...fe4 21.fe4 Rag8 22.g3+–) 21.Ne6 Bf6 (21...fe4 22.fe4 Ne5 23.Ke2+–) 22.ef5 Be5 (22...Nb6 23.Nf4+–) 23.f4 Rh4 (23...Bf6 24.Be3+–) 24.fe5 Ne5 25.Ke2 Rcc4 (25...Rg8 26.Nf4+–) 26.h3 Rce4 27.Be3 Nc4 28.Ng5 Kf6 29.Ne4 Re4 30.Kd3 Ne3 31.Ke4 Ng2 32.h4 e6 33.fe6 b5 34.h5 Kg7 35.h6 Kg6 36.h7 Nh4 37.h8Q Kg5 38.Qh4 Kg6 39.Rg1 1–0. kamret (2140) – Jjangeeda, GameColony.com, 2003.

3.Bg5+/– f6 4.Bh4 d5 5.a3 Bf5 6.e3 e6 7.Nf3 Qd7 8.Be2 Be4 9.0–0 Bf3 10.Bf3 (10.gf3?! Ne7+=) 10...Nc6 11.e4 f5 (11...de4 12.Be4 Nd4 13.Qh5 Qf7 14.Qc5+/–) 12.ef5 ef5 13.Re1 Nge7?? (better is 13...Nce7+–) 14.Nc3 (better is 14.b5!? 0–0 15.bc6 Nc6+–) 14...0–0–0 15.b5 Bd4 16.Qd3 Rde8 17.bc6 Nc6 18.Bd5 Bc3+/– 19.Qc3 Qd5= 20.Rad1 Re1 21.Re1 b5?? 22.Qh8+– Kb7 23.Qh7 a5 24.Qg7 Ne5 25.Qe5 Qe5 26.Re5 Kc6 27.Rf5 b4 28.ab4 a4 29.Ra5 Kb6 30.Ra4 Kb5 31.Ra8 Kb4 32.f4 c5 33.f5 c4 34.f6 Kc3 35.f7 Kc2 36.f8Q c3 37.Ra2 Kd3 38.Qf3 Kc4 39.Ra3 c2 40.Qc3 Kb5 41.Qc2 Kb6 42.Rb3 Ka5 43.Qa2 1–0. pieeater – karlsdad, ChessWorld.net, 2013.

3.Bg5 h5 4.Nc3 (4.e3 Nf6 5.Bd3 Nh7 6.Bh4 Bf6 7.Nf3 Nc6 8.a3 Bh4+/– 1.38; 4.Nf3 Nf6 A) 5.e3 a5 (5...Ne4 6.Bf4 a5 7.Bd3 d5 8.b5 c5+/– 1.30) 6.b5 Ne4 7.Bf4 d6 8.c3 Nf6+/– 1.20; B) 5.Nbd2 Rg8 6.e3 d6 7.c4 Bf5 8.Be2 a5+/– 1.28) 4...f6 (4...Nc6 5.Nf3 Nb4 6.a3+/– Nc6 7.e4 Nf6 8.Be2 d6+/– 1.03; 4...d5 5.Nf3 a5 6.b5 Nf6 7.e3 Bf5 8.Be2 Rg8+/– 1.31; 4...a5 5.b5 d5 6.e3 Nf6 7.Bd3 Nbd7 8.Nf3 Nf8+– 1.50) 5.Bh4 (better is 5.Bc1+– f5 6.Qd3 Nc6 7.Qf5 Nd4 8.Qg6 Kf8 9.Bd2+/– 0.74) 5...Rh6? (better is 5...d5+– 6.e3 Nh6 7.Qh5 Nf7 8.Qg6 Bf8+/– 1.33) 6.e4 Rg6 (6...c6+–) 7.Qh5 Kf7 8.f4 Bh6 (8...e6 9.f5 Ne7 10.fg6 Ng6 11.Bg3+–) 9.f5 e5 (9...Nc6 10.Bc4 Kf8 11.fg6 d5+–) 10.Qg6 Kf8 11.Bc4 Nc6 12.Qf7# 1–0. pierre – terewey, internet, 2010.

3.Bg5+/– h6 4.Bf4 +/–.

2.f3 Bg7=

3.c3 Nc6 4.d4 d5 5.Bg5 h6 6.Bf4 e5 7.de5 Ne5 8.Be5 Be5= 9.e3 Qg5?? 10.f4+– Bf4 11.ef4 Qf4 12.Be2 Nf6 13.Nf3 Rg8 14.0–0 Bh3 15.Rf2?? Ne4+= 16.Bb5 Ke7 17.Qf1?? Nf2–+ 18.Ne1 Rg2 19.Ng2 Rg8 20.Qf2 Qc1 21.Bf1 Rg2 22.Qg2 Bg2 23.Kg2 Qb2 (24.Kg3 Qa1–+) 0–1. goatmilk – jelgava, ChessWorld.net, 2005.

3.c3 d5 4.d4 e5 5.de5 Be5 6.e4=.

3.c3 Nf6 4.d4 d5 5.Bb2 Bf5 6.e3 Nbd7 7.Bb5 c6 8.Ba4 0–0 9.Ne2 Nb6 10.0–0 Na4–/+ 11.Bc1?? Nb6 12.Nd2 Qc7 13.Qe1 Nfd7 14.g4 Bg6 15.Ng3 e6 16.Nh5 Bh8 17.h4 h6 18.f4 Bh5 19.gh5 g4 20.Qg3 f5 21.Nf3 Nf6 22.Ne5 Nh5 23.Qe1 Bf6 24.Kg2 Kh7 25.a4 Nd7 26.Ba3 b5 27.ab5 cb5 28.Kh1 Rfc8 29.Bb2 a5 30.ba5 Be5 31.de5 Nc5 32.Qe2 Ng3 (33.Kg2 Ne2–+) 0–1. goatmilk – Arran, ChessWorld.net, 2005.

2.Nf3 Bg7=

3.c3=.

3.Nc3 (3...g4 4.Ng1=+). Seimi Agus Eion – magne, ChessWorld.net, 2005.

2.a3 Bg7

3.Ra2 d6 4.c4 Be6 5.e4 Bd4 6.Qb3 Bg4 7.Bb2 Bb2 8.Qb2 Qd7 9.Qh8 Kf8 10.Qh7 Qa4 11.Nc3 Qb3 12.f3 Be6 13.Bd3 Nd7 14.Nge2 Ndf6 15.Qh8 Ke8 16.0–0 Kd7 17.Nd4 c5 18.Nb3 cb4 19.ab4 White claimed a win on time 1–0. themuttsknutts – Carpenter Ant, ChessWorld.net, 2007. (=1.a3 g5 2.b4 Bg7)

3.Bb2?? Bb2–+ 4.Ra2 Bf6 5.d3 b6 6.Nd2 Bb7 7.Ngf3 Nc6 8.g3 (8.e3–+) 8...g4 9.Bg2 gf3 10.Nf3 Nd4 11.0–0 Nf3 12.ef3 Bd5 (12...Bc3!? 13.f4 d5 14.Qe2–+) 13.d4 (13.c4 Bb7 14.d4–+) 13…Ba2 0–1. golfx – maryjusz101, kurnik, 2011. (=1.a3 g5 2.b4)

3.c3 Nc6 4.Bb2 (4.d4 h6+=) 4...a5 (4...d5 5.e3=) 5.Qb3 (5.b5 Na7=) 5...d6 6.d3 Be6 7.Qc2 ab4 8.ab4 Ra1 9.Ba1 Nb4?? (9...Nf6=) 10.Qa4?? (better is 10.cb4 Ba1 11.Qa4 Bd7 12.Qa1+–) 10...Nc6–/+ 11.Nd2 Bd7 12.Ngf3 g4 13.Nh4 e5 14.g3 Nd4 15.Qd1–/+ Nc6 16.Bg2 Nge7 17.0–0 0–0 18.Qb3 Be6 19.Qb7+= Qd7 20.Rb1 Rb8 21.Qa6 Rf8 22.Ne4 d5 23.Ng5 e4 24.Ne6 Qe6= 25.c4 ed3 26.cd5+= Nd5 27.Qd3 Rd8 28.Bg7 Kg7 29.Qc4 Ne5 30.Qb3 Qd6?? 31.Rd1 c6 32.e4 Rb8 33.Qa2 (33.Qa2 Nc3 34.Rd6 Na2 35.h3+=) 1–0. golfx – jivko76, kurnik, 2011. (=1.a3 g5 2.b4)

3.c3 d5 4.e3 a5 5.Nf3 h6 (5...g4 6.Nd4+=) 6.Bd3 (6.d4 ab4 7.cb4 Nd7=) 6...Bg4 (6...ab4 7.Bb2–/+) 7.0–0 (7.Bb2 e5 8.Be2 e4=) 7...c6 (7...ab4 8.Be2–/+) 8.Be2 (8.b5 e5 9.Be2 e4=) 8...Bf3 9.Bf3 ab4 10.Bb2 ba3 11.Ba3 b5?? (better is 11...Nd7+=) 12.Be7!+– Ne7 13.Ra8 Nf5 14.Re1 0–0 15.d3 Qc7 16.e4 de4 17.g3?? ef3–/+ 18.Qf3 Ne7 19.d4 Nd5 20.Kg2 Nd7 21.Ra3 f6 22.h3 f5 23.Nd2 b4 24.cb4 Nb4 25.Qb3 Nd5 26.Re2 Bd4 27.Nc4 Bc5 28.Raa2 f4 29.f3?? Be7 30.g4 Rf7 31.Ra8 Rf8 32.Rf8?? Kf8–+ 33.Kh2 Nc5 34.Qb1 Nc3?? 35.Qf5= Ke8 36.Qg6 Kd8? 37.Rd2?? Kc8 38.Qg8 Kb7–/+ 39.Rb2 Ka6?? 40.Qa8 Qa7 41.Qc8 Nb7 42.Qc6 Qb6 43.Qb6# 1–0. pieeater – dunk0104, ChessWorld.net, 2012.

3.c3 d6 4.d4 h6 5.e4 Be6 (5...Nf6 6.Nd2=) 6.d5= Bd7 7.f4 (7.Nf3 Nf6 8.Nbd2 c6=) 7...g4 (7...a5 8.b5–/+) 8.g3 (8.Ne2 c6+=) 8...Nf6 (8...c6 9.Ne2 a5 10.Bb2 cd5 11.ed5 ab4 12.ab4 Ra1 13.Ba1+=) 9.Bg2 Bb5?? (better is 9...c6!?–/+) 10.a4 (10.e5 de5 11.fe5 Nd5 12.Bd5+/–) 10...Bc4? (10...Bd7!? 11.e5 Nh7+=) 11.Qd4 (better is 11.Na3 Nd5 12.ed5 Bc3 13.Bd2+–) 11...Bb3? (better is 11...b5!? 12.Nd2 Nh5+/–) 12.Nd2+– Bc2? 13.Ra2 c5 14.bc5 Qd7 15.Rc2 h5 16.Bf1 0–0 17.h3 Rc8 18.hg4 hg4 19.e5 Ne8 20.Nb3 b6 21.Qf2 dc5 22.c4 Qa4 23.Qh2 Qb3 24.Rd2 Qc3?? 25.Qh7 Kf8 26.Ne2 Rd8 27.Nc3 Na6 28.Be2 Nb4 29.Bg4 a5 30.Rf2 e6 31.Rfh2 Nc2 32.Qc2 a4 33.de6 fe6 34.Be6 a3 35.Qb3 Ke7 36.Qb6 a2 37.Na2 Rd3 38.Qb7 Ke6 39.Qa8 Rg3 40.Qe8 Kf5 41.Rh5 Ke4 42.Qc6 Kd4 43.Qd5# 1–0. Eries – Pekin Dragons, ChessWorld.net, 2012.

3.c3 Nf6 4.d4 a5 5.Bg5 ab4 6.cb4=.

3.c3 h5 4.Bb2 (4.d4 g4+=) 4...g4 5.d3 d5 6.Nd2 Bf5 7.g3 (7.e4!? Bg6 8.h3=) 7...h4+= 8.Bg2 h3 9.Bf1 e5 10.e4 de4 11.Ne4 Be4 (11...Qd5!? 12.f3 Qc6+=) 12.de4= Qd1 13.Rd1 Nd7 (13...Nf6 14.f3+=) 14.c4 Ndf6 (14...a5 15.b5=) 15.c5 (better is 15.Be5!? Kf8 16.f3 gf3 17.Bc7 Ne4 18.Nf3 Bc3 19.Ke2=) 15...Ne4= 16.Be2 Rd8 (better is 16...f5=) 17.Rd8+/– Kd8 18.Bg4 Ne7 (18...Ng5!?+/–) 19.Bh3+– (worse is 19.Nh3 f5 20.Bf3 Rh3–/+) 19...Nd5 20.Bf5 (20.Bg2 f5+–) 20...Nec3 21.Bc3 Nc3 22.Nf3 e4 (22...Ke7 23.h4+/–) 23.Ng5+– Re8 24.Nf7 (better is 24.h4!? Ke7 25.Kd2+– (25.Ne4?! Ne4 26.Be4 Kd7=; 25.Be4?! Kd7=)) 24...Ke7+/– 25.Ng5 Kf6 26.Bd7 (26.Ne6 Re6 27.Be6 Ke6+=) 26...Rd8 27.Ne4 Ne4 28.Bg4 Kg5 29.f3 Nc3 30.Kf2 Bd4 31.Kg2 Re8 32.Rc1 Re2–/+ 33.Kf1?? Rh2–+ 34.Bc8 Rf2 35.Ke1 Rf3 36.Kd2 Rg3 37.Bb7 Be3 38.Kc3 Bc1 39.Kc4 Ba3 40.Kb5 Rg4 41.Ka6 Rb4 42.Ka7 Ra4 43.Kb8 Bc5 44.Kc7 Ra7 45.Kb8 Bg1 46.Bd5 Kf6 47.Bf3 Ke7 48.Bg4 Kd8 49.Bf5 Rg7 50.Be6 Re7 51.Bf5 Ba7 52.Ka8 Bb6 53.Bg4 Kc7 54.Bc8 Re8 (54...Re1 55.Be6 Ra1 56.Ba2 Ra2) ½–½. golfx – ziga1955, kurnik, 2011. (=1.a3 g5 2.b4)

3.Nc3 h5 4.g3 (4.e4 d6+=) 4...Nh6 5.d3?? (5.e4 g4=) 5...e6 (better is 5...Bc3 6.Bd2 Ba1 7.Qa1 f6–+) 6.Bb2 0–0 (better is 6...d5!?=) 7.Bg2 ½–½. Feria Obando,Eduardo – Romero Silva,Jose Antonio, Ayamonte Iberoamericano–B, 2004. (=1.a3 g5 2.b4 Bg7)

3.d4 Nc6 4.Bg5 Nd4 5.Qd4?? (better is 5.c3 Ne6 6.Bd2=+) 5...Bd4–+ 6.e3 (6.Ra2–+) 6...Ba1 7.Ne2 a5 8.ba5 Ra5 9.f4 h6 10.Bh4 d5 11.Nec3 Bf5 12.e4 de4 13.Ne4 Qd4 (13...Be4 14.Be2 Bd4 15.c3–+) 14.Ng3 Bc2 15.Nf5 Rf5 16.a4 (16.Bb5 Rb5 17.g4 Qe3 18.Kf1 Rb1 19.Be1 Re1 20.Kg2 Be4#) 16...Rf4 (16...Qe3 17.Be2 Bd3 18.Kd1 Qe2 19.Kc1 Qc2#) 17.g3 (17.Bb5 c6 18.Ke2 Re4 19.Kf1 Qd1 20.Kf2 Bd4 21.Kg3 Qg4#) 17…Qf2# 0–1. Foehles,Thomas (1800) – Jeurissen,Carsten (1645), remoteschach.de, 2005.

3.c3 e5

4.Bb2 d5 5.e3=.

4.Bb2 f5 5.d3 Nf6 6.Nd2 0–0 7.g3 d6 8.Bg2 Be6?? (8...c6 9.Qb3 Kh8 10.h3=) 9.e4?? (better is 9.Bb7 Nbd7 10.Ngf3+–) 9...f4 (9...fe4 10.de4 a5 11.h3+=) 10.Ne2 Nfd7 (10...fg3 11.hg3 Ng4 12.Rf1=) 11.f3 g4 12.0–0 gf3 13.Bf3 Bh3 14.Rf2 Qg5 15.Bg2 Bg2 16.Kg2 h5 17.d4 h4 18.de5 Be5 19.Nf3+= h3 20.Kh1 Qg4 21.Ne5 de5 22.c4 Rf7? 23.Qf1 Nb6 24.Rc1 N8d7? 25.c5 Na4= 26.Ba1 Raf8? 27.Ng1?? fg3–+ 28.Rf7 Rf7 29.Qh3–+ Qh3 30.Nh3+= Rf3 31.Kg2 Re3 32.Ng5 Kg7 33.hg3 Nf6?? 34.Be5+– Kg6 35.Nf3 Ne4 36.Bc7 Re2 37.Kh3 Nac3 38.c6! Nf2?? 39.Kh4+– (39.Kh4 Re4 40.Bf4+–) 1–0. golfx – gala43, kurnik, 2012. (=1.a3 g5 2.b4 Bg7 3.c3 e5)

4.d4 ed4 5.Bb2 (5.cd4!? a5 6.b5+=) 5...dc3+= 6.Nc3 f6 (6...Nc6!?+=) 7.e4 a5 8.b5 c5 (8...Ne7!?+=) 9.Nd5 b6 (9...Kf8 10.Qc2 d6 11.Bc4+/–) 10.Nf3 (10.Qh5 Kf8 11.Bc4 Bb7+–) 10...d6 11.Bc4 Bb7?? (11...g4 12.Nd2+/–) 12.0–0 (better is 12.Ng5 h5 13.Ne6+–) 12...g4? (12...Ra7 13.Re1 Bd5 14.Qd5+–) 13.Nh4 (13.Ng5! Bc8 14.Nf7 Kf7 15.Nb6 Kf8 16.Na8 Ne7+–) 13...h5 14.Ng6 Rh6 15.Ngf4 (15.Ngf4 Ra7 16.Ne6 Bd5 17.Nd8 (17.ed5?! Qd7+–; 17.Bd5?! Qd7+–) 17...Bc4 18.Qd6+–) 1–0. pieeater – dunk0104, ChessWorld.net, 2012.

4.e4 Nf6 5.Nf3 d6 6.Bc4 (6.d3 g4 7.Nfd2 Be6=) 6...Ne4 7.d3 Nf6 8.d4 Bg4 (8...e4 9.Ng5 d5 10.Be2–/+) 9.Nbd2?? (9.de5 Qe7 10.0–0 de5 11.Bg5 Nbd7=) 9...a5 (9...e4 10.h3 ef3 11.hg4 fg2–/+ (worse is 11...Ng4 12.Qf3 Nf6 13.Qb7+/–)) 10.0–0 d5 11.Bb5 c6 12.Ba4? (12.Be2 ab4 13.Ne5 bc3 14.Bg4 cd2 15.Bd2 Ne4+=) 12...b5 13.Bb3 a4 14.Ba2 ed4 15.cd4 Nfd7 16.h3 Bf3 17.Qf3?? Bd4–/+ 18.Rb1 Ne5 19.Qf5 0–0 20.Nf3 Nf3 21.Qf3 f6?? 22.Qf5 Na6?? 23.Re1 Bc3 24.Rd1 Re8?? 25.Kh2?? Be5 26.g3 Nc7 27.Be3 Kg7 28.Rbc1 Ra6 29.Bb1 Bb2?? 30.Qh7 Kf8 31.Bg6 Bc1 32.Qf7# 1–0. pieeater – dunk0104, ChessWorld.net, 2012.

3.c3 e6

4.Bb2 d6 5.d3 a6 6.Nd2 Nd7 7.g3 Ne7 8.Bg2 h6 9.Ngf3 Ng6 10.0–0 0–0 11.e3 e5 12.d4 Nf6 13.de5 de5 14.Nc4 Bg4 (better is 14...Qe7!?=) 15.Qd8+/– Rad8 16.Nfe5 Ne5 17.Ne5 Be2 (17...c6 18.c4+/–) 18.Rfe1 (worse is 18.Bb7 Bf1 19.Rf1 Rfe8+=) 18...Bb5 (18...Rd2 19.Bc1 Rc2 20.Bb7+/–) 19.Bb7 (19.c4 Ba4 20.Bb7 Rd6+–) 19...Rd2 20.Rab1 Ne4 21.c4 (better is 21.Nf3 Rb2 22.Rb2+/–) 21...Ba4?? (better is 21...Nf2 22.cb5 Nh3 23.Kh1 Nf2 24.Kg2 Nd3 25.Kg1 Ne1+/–) 22.Be4+– Rfd8 (22...Rb2 23.Rb2 Be5 24.Rbb1+–) 23.Bc3 Ra2 (23...Bc2 24.Bd2 Be4 25.Bc3 Bb1 26.Rb1+–) 24.Ra1 Bb3 25.Ra2 Ba2 26.Ra1 Bc4 27.Rc1 Be6 28.Nc6 Rd6 29.Bg7 Kg7 30.a4 (30.Nd4 Kf6+–) 30...Bd5 (30...Kf6 31.a5 h5 32.Nd4+–) 31.Bd5 Rd5 32.Rc5 (32.Rc5 Rd6 33.a5+–) 1–0. golfx – milanio, kurnik, 2011. (=1.a3 g5 2.b4 Bg7 3.c3 e6)

4.Bb2 d6 5.d3 Nd7 6.Nd2 h6 7.g3 Ne7 8.Bg2 Ng6 9.e3 e5 10.Ne2 a6 11.0–0 0–0 12.e4 Nf6 13.d4 Bd7 14.de5 Ne5 15.Nf3 (15.c4!?=) 15...Nf3 16.Bf3 Bg4 (better is 16...Bc6!?+=) 17.Bg2 Be2 18.Qe2 Nd7 19.c4 (19.e5 Ne5 20.Bb7 Ra7+=) 19...Ne5 (19...Bb2 20.Qb2 g4 21.f4 gf3 22.Bf3=) 20.Qc2 (20.f4!? gf4 21.gf4+/–) 20...Qf6 21.f4 Nf3 22.Bf3 Qb2 23.Qb2 Bb2 24.Ra2 Bd4 25.Kg2 c5 26.e5 de5 27.fe5 Be5 28.bc5 Rab8 29.Rb1 f5 30.Rb7 Rb7 31.Bb7 a5 32.Bd5 Kg7+= 33.c6 Bc7 34.Rb2 Rb8? 35.Rb8 Bb8+= 36.a4 Bc7 37.Kf3 Kf6 38.g4 Bh2+= 39.gf5 Kf5 40.Be4 Kf6 41.Kg4 Bc7 42.Kh5 Kg7 43.Kg4 Kf6 44.Kh5 Kg7 45.Bd5 Bf4 46.Be6 Bc7 47.Bd7 Bf4 48.Bf5 Bc7 49.Be4 Bd6 50.Bd5 Bc7 51.Be6 Bd6 52.Bg4 Bc7 53.Bf3 Bd6 54.Bd5 Bc7 55.Kg4 Bd6?? 56.Kf5+– Bc7 57.Ke6 Bf4 58.Kd7 g4?? 59.c7 Bc7 60.Kc7 g3 61.Kd7 h5 62.c5 h4 63.c6 h3 64.c7 g2 65.Bg2! hg2 66.c8Q g1Q 67.Qc3 Kh6?? 68.Qa5 Qg7 69.Kc6 Qf6 70.Kb5?? Qe5?? 71.Ka6+– Qe7 72.Qb6 Kg5 73.a5 Kf5 74.Qb7 Qd6 75.Ka7 Qc5 76.Qb6 (76.Qb6 Qe7 77.Kb8 Qe8 78.Kb7 Qf7 79.Qc7 Qb3 80.Ka8 Qd5 81.Kb8 Qb3 82.Qb7 Qg3 83.Ka8 Qg8 84.Ka7 Qg1 85.Ka6 Qg6 86.Qb6+–) 1–0. golfx – milanio, kurnik, 2011. (=1.a3 g5 2.b4)

4.Bb2 d6 5.d4 d5=.

4.Bb2 d6 5.g3 a6 6.Bg2 Nd7 7.d4 Ne7 8.Nd2 h6 9.e3 e5 10.de5 (10.Ne2!?=) 10...Ne5+= (worse is 10...Be5 11.Ngf3+=) 11.Qe2 Be6 (11...Bf5 12.e4 Bd7 13.0–0–0+=) 12.Ngf3 (12.Bb7 Ra7 13.Ba6 Qa8 14.Bb5 c6+/–) 12...N7g6 (better is 12...Nf3!? 13.Nf3 Qd7=) 13.Ne5+/– Ne5 14.Bb7 Rb8 (14...Bg4!? 15.f3 Ra7+/–) 15.Ba6+– (15.Qa6?! Rb7 16.Qb7 Nd3 17.Kf1 Nb2+=) 15...0–0 16.0–0 Rb6 17.Bd3 Qa8 18.Be4 Bd5 19.Bd5 Qd5 20.f4 gf4 (20...Qd3 21.Kf2 gf4 22.ef4+–) 21.gf4 (better is 21.ef4 Nd3 22.c4 Bd4 23.Bd4 Qd4 24.Kg2+–) 21...Nd3?? (better is 21...Qd3 22.Rf2 Qe2 23.Re2 Nd3+/–) 22.e4 Qb3 (22...Nf4 23.Rf4 Qc6+–) 23.Nb3 (23.Qd3?! Qb2 24.Rfc1 Rc6+–) 23...Nb2 24.Qb2 c5 25.Nd2 cb4 26.ab4 Rfb8 27.Nf3 Rb4 28.cb4 Bb2 29.Rab1 Bg7 30.b5 Kf8 31.b6 Ke8 32.Rfc1 f5 33.ef5 Bf6 34.b7 Kd7 35.Kf2 Bd8 36.Kg3 Bc7 37.Kg4 d5 38.Kh5 d4 39.Kh6 Bf4 40.Kg6 Bc1 41.Rc1 Rb7 42.Nd4 1–0. golfx – milanio, kurnik, 2012. (=1.a3 g5 2.b4 Bg7 3.c3 e6)

3.c3 h6

4.Bb2 b6 5.d3 Bb7 6.Nd2 d6 7.Ngf3 e5 8.g3?? (8.e4 g4 9.Ng1 Nf6=) 8...Nd7?? (better is 8...g4–+) 9.Bg2= Qe7 10.0–0 0–0–0 11.e4 d5 12.Qe2 de4 13.Ne4 f5 14.Ned2 e4 15.de4+= fe4 16.Nd4 Bd4 17.cd4 Ngf6 18.Rfe1 Rhe8 19.Qc4 Qd6 20.Rac1 Bd5 21.Qc6?? Bc6–+ 22.Nc4 Qe6 23.Ne5 Ne5 24.de5 Ng4 25.Be4 Be4 26.Re4 Qb3 27.Re2 Rd1 28.Rd1 Qd1 29.Kg2 Qe2 30.Bd4 Ne5 31.Be5 Qe5 32.h3 Qd5 33.Kf1 Qh1# 0–1. golfx – krzysztofkm, kurnik, 2011. (=1.a3 g5 2.b4 Bg7)

4.Bb2 d5 5.e3=.

4.Bb2 f6 5.d3 b6 (5...d5 6.e4+=) 6.Nd2 Bb7 7.Ngf3 Nc6 8.g3 (8.e4 e6+=) 8...e6 9.c4 d6 (9...g4 10.Nh4=) 10.b5 Ne5 11.Ne5?? (11.e4 Qd7+=) 11...de5 (better is 11...Bh1 12.Nc6 Bc6 13.bc6 Qe7–/+) 12.e4 f5 (12...Qd7 13.Be2=) 13.Bg2 (better is 13.Qh5!? Ke7 14.Be2+=) 13...Qd3= 14.Nb3 (14.Qh5!? Ke7 15.h4+=) 14...0–0–0–/+ 15.Qd3 Rd3 16.Nc1 Rd8 17.0–0 Ne7 18.Nb3 f4 (18...Rd3!? 19.Nc1 Rd2–/+) 19.c5 Rd3 20.c6? (better is 20.Bh3 Be4 21.Be6 Kb8 22.gf4+=) 20...Rb3–+ 21.cb7 Kb7 22.Bc1 a6 23.ba6–/+ Ka6 24.Rd1 Re8 25.Rd7 Bf8 26.Rc7 Rc8 27.Rc8 Nc8 28.Bf1 Kb7 29.a4 Bc5–+ 30.Ra2 Nd6 31.Bd2? Ne4 32.Bg2 Rb1 33.Bf1 Nd2 34.Rd2 Bd4 35.Kg2 Ra1 36.Bb5 Kc7 37.Rc2 Kd6 38.Rc8? Kd5 39.Rh8? Ra2 40.Rh6 Rf2 41.Kh3 fg3 42.hg3 Rf3 43.Kg4 Rb3 44.Rg6 Bc5 45.Rg5+= Rb5 46.ab5+/– Bd4 47.Rg6 e4= 48.Kf4 e3?? 49.Rg5 e5+= 50.Kf3 Kc5 51.Rg8 Kb5 52.g4 Kc4 53.Rc8?? Kd3–+ 54.Rb8 e4 55.Kf4 e2 56.g5 e1Q 57.g6 Qf2 58.Kg5 Qf6 59.Kh6 Be3 60.Kh7–+ Bd4 61.Kh6 e3 62.Rb7 Qg6! 63.Kg6 e2 64.Re7 e1N 65.Re1= Kc4 66.Rb1 b5 67.Kf5 b4 68.Ke4 Bc3 69.Ke3 b3 70.Ke4 Kb4 71.Kd3 Bf6 72.Rb3 Kc5 73.Rc3 Kd5 74.Rb3 Bh4 75.Rb5+= Kc6 76.Rb6 Kc5 77.Rb5 Kd6 78.Rb6 Kc7 79.Rb7 Kd8 80.Rb8 Ke7 81.Rb7 Kd6 82.Rb6 Kd5 83.Rd6 Ke5 84.Re6 Kd5 85.Rd6 Kc5 86.Rc6 Kb5 87.Rb6 Ka4 88.Rb4 Ka3?? 89.Rh4 Kb2 90.Rc4 Kb3 ½–½. golfx – slavisko, kurnik, 2012. (=1.a3 g5 2.b4 Bg7)

3.Nc3 d5

4.Bb2 d4 5.Na4 e5 6.e3 Bd7 (better 6...Qe7=) 7.Be2?? (better 7.Nc5+=) 7...Ba4–+ 8.Nf3 (8.h4–+) 8...Nf6 (better 8...g4 9.Ng1 de3 10.de3–+) 9.Ng5 (9.Ne5 de3 10.fe3 Nfd7–+) 9...0–0 10.h4 (10.0–0 Qd5 11.Bf3 Qb5–+) 10...h6 11.Nf3 Nc6 (11...d3!? 12.Bd3 e4 13.Bf6 Qf6 14.Be4 Qa1 15.Qa1 Ba1 16.Bb7–+) 12.b5 Ne7 13.Ne5 Qd5 (13...de3 14.de3 c6 15.Qd8 Rad8 16.bc6 Nc6 17.Nc6 Bc6 18.Rg1–+) 14.Bd4 c5 (14...Nf5 15.Bb2 Rfe8=+ (worse 15...Bb5 16.c4 Bc4 17.Nc4+–; 15...Qg2 16.Bf3 Qh1 17.Bh1+–)) 15.c4?? (15.bc6 Nc6 (15...Qg2?? 16.Bf3 Qh1 17.Bh1 bc6 18.Rb1+–) 16.Bf3 Qd6 17.Nc6 Bc6=+) 15...Qd6?? (better 15...Bd1 16.cd5 Be2 (16...cd4?! 17.Rd1 Nfd5 18.Nc4–/+) 17.Bc5 Nfd5 18.Ke2 Be5–+) 16.Bb2?? (better 16.Qa4 cd4 17.Nd3 de3 18.de3–/+) 16...Nf5 (16...Bd1 17.Rd1 a6 18.d4–+) 17.f4?? (better 17.Qa4 Ne4 18.Bd3 Nf2 19.Kf2 (19.Bf5 Nh1 20.d4 Be5 21.de5 Qd8–/+) 19...Be5 20.Be5 Qd3 21.Ra2+–) 17...Bd1–+ 18.Rd1 Rad8 (18...Ng3 19.Rg1–+) 19.g4 (19.Rh3 h5–+) 19...Ne3! 20.de3 Qe6 (20...Qb6 21.Bd3 Ng4 22.Rg1 Ne5 23.Be5 Qa5 24.Ke2–+) 21.g5 (21.Bf3 Nd7 22.Bd5 Qe7–+) 21...Ne4 (better 21...Rd1 22.Bd1 Ne4 23.Bg4–+) 22.gh6 (22.Rd8 Rd8 23.gh6 Be5 24.Be5 Qg6 25.h7 Kh7 26.f5 Qg2 27.Rf1 Rd2 28.Bf3 Rd1 29.Kd1 Qd2) 22...Be5 (22...Rd1 23.Bd1 Be5 24.Be5–+) 23.Be5 (23.Rd8 Rd8 24.Be5 Qg6 25.h7 Kh7 26.Bg4 Qg4 27.Bd4 cd4 28.Rf1 de3 29.Rf3 Qf3 30.h5 Rd1) 23...Kh7 (better 23...Rd1 24.Bd1 f6–+) 24.Rg1 (24.Rd8 Rd8 25.h5–+) 24...Rd1 25.Kd1 Rg8 (25...Rd8 26.Kc1 Qh3 27.Bd1 Qe3 28.Kb2 Rd2 29.Bc2 Qg1 30.Bc3 Re2 31.Bf6 Qd1 32.b6 Qc2 33.Ka1 Qd1) 26.Rg8 Kg8 (26...Qd7 27.Kc2 Qd2 28.Kb3 Kg8 29.Bf6 Qe3 30.Ka2 Qe2 31.Kb3 Nf6 32.b6–+) 27.h7 (27.Kc2 Qh3 28.b6 Qe3–+) 27...Kh7 28.Bh5 (28.Bd3 Qg4 29.Kc2 f5–+) 28...Qd7 (28...Qc4 29.b6 ab6 30.Bf7 Qf7 31.Kc1 Qc4 32.Kb2 Qe2 33.Kb1 c4 34.Bf6 Qe1 35.Kb2 Qd2 36.Ka1 c3 37.Bc3 Nc3 38.e4 Qc1) 29.Ke2 (29.Kc2 Qd2 30.Kb1–+) 29...Qd2 30.Kf3 Qf2 (30...f5 31.Bg6 Kg6 32.h5 Kh5 33.b6 Qf2) 31.Ke4–+ Qg2 (31...Qg2 32.Kd3 Qf1 33.Be2 Qb1 34.Kd2 Qa2 35.Kd3 Qa3 36.Bc3 f5–+) 0–1. alddhsfd (1980) – DAMENFRESSER (2025), lichess.org, 2020.

4.Bb2 d4 5.Ne4 Bf5 6.Ng5 e5 7.c3?? (better is 7.N5h3+=) 7...Qg5 8.cd4 ed4 9.Nf3 Qf4 (9...Qd8!?–+) 10.e3–/+ de3?? (better is 10...Qd6–/+) 11.Bg7+– ef2 12.Kf2 Nf6 13.Qe2 Ne4 14.Kg1 Rg8 15.g3?? Rg7+= 16.d3 Kf8 17.de4 Be4 18.Bg2 Bf3 19.Bf3 Nc6 20.Re1 Rg5 21.Kg2 Nd4 22.Qe7+= Kg7 23.Rhf1 h5?? 24.Re4 Qd2?? 25.Rf2+– Nf5 26.Qe5 f6 27.Qc7 Kg6 28.Rd2 1–0. tomszach – lordul7, playok.com, 2012. (=1.a3 g5 2.b4 Bg7)

4.Bb2 e5 5.e3 Ne7 6.Nce2 h5 7.c4 (7.Nf3!? Ng6 8.d4=) 7...Bf5 8.Nc3 d4 9.ed4 ed4 (worse 9...Qd4 10.Nf3 Qd7 11.Na4+=) 10.Nb5? (better 10.Nce2=+) 10...a6–+ 11.Nd4 (11.Nc7 Qc7 12.Be2 g4–+) 11…Bd4 (11...Bd4 12.Bd4 Qd4–+) 0–1. alddhsfd (1780) – abitehhhhhhh (1755), lichess.org, 2019.

2.a4 Bg7

3.Nc3 Nf6=.

3.d4 Nc6!?+=.

3.d4 e6 4.h3= Bf8 (4...Nc6 5.Nf3+=) 5.c3+= h6 6.Nf3 f6 (better is 6...Nf6!?+=) 7.Nbd2 Qe7 (7...Ne7!?+–) 8.e4 b6 (8...Nc6 9.Be2+–) 9.Bd3 Ba6 (9...Bb7 10.Nc4+–) 10.b5 Bb7 11.a5 ba5 12.Ra5 c6 (12...Qg7 13.Qa4 a6 14.ba6+–) 13.e5 1–0. pierre – fakhruddin, internet, 2008.

3.d4 h6 4.e4=.

3.d4 b6

4.Bg5+= c5 5.bc5 bc5 6.Nf3 Nc6 7.c3 cd4 8.cd4 Qb6 9.e3 e5 10.Nbd2 ed4 11.Rb1 Qc5 12.e4 Nge7 (12...Nf6 13.Rc1 Qd6 14.Bd3+/–) 13.Bb5 0–0 14.0–0 f5 (14...a6 15.Rc1 Qa3 16.Nc4+/–) 15.Re1+– Kh8 16.e5 Nd5 (16...Ng6 17.e6+–) 17.Nb3 Qb6 18.Bc6 (worse is 18.Nbd4 Ne5 19.Bc6 Qb1 20.Qb1 Nf3 21.Nf3 dc6+–) 18...dc6 19.Nbd4 (19.Nfd4?! Nc3 20.Qc2 Nb1 21.Rb1 Be5+=; 19.Qd4?! Rb8+–) 19...Qc7 (19...Qa6 20.Qc2+–) 20.Qc2 (20.Rc1 Nb4+–) 20...f4 (20...c5 21.Nb5 Qc6 22.Nfd4+–) 21.Qc6 (21.Nc6?! Bf5 22.Qc5 Bb1 23.Qd5 Bc2+/–) 21...Qc6 22.Nc6 Bg4 (22...Bd7 23.Nfd4+–) 23.Nfd4 Rae8 24.Rb7 a6 25.e6 h6 26.Bh4 Kh7 (26...Rg8+–) 27.h3 Bf5 28.Re5 (worse is 28.Nf5 Rf5 29.Ra7 f3+–) 28...Ne7 (28...Kg6 29.Rf5 Rf5 30.Nf5 Kf5 31.Rg7 Ke6 32.Rg6 Kd7 33.Rh6 Re1 34.Kh2 Kc8+–) 29.Be7 (29.Be7 Re7 30.Re7+– (30.Rf5?! Rb7 31.e7 Re8+–)) 1–0. guest1149 – guest1186, ICC, 2003.

4.Bg5 h6 5.Bf4 Nf6 6.Nc3 Nh5 7.Be5 Be5 8.de5 Rg8 9.Qd3 Rg5? (9...d5 10.Qh7 Kf8+–) 10.Qh7 e6 11.Qh8 Ke7 12.Qh6 Nf4 (12...Qg8 13.f4! Nf4 14.Qf6 Ke8 15.Qf4 Bb7+–) 13.Qg5 Ke8 14.Qf4 Nc6 15.b5 Nb4 16.Qb4 c5 17.Qf4 Qc7 18.Ne4 a6 19.Nd6 (19...Qd6 20.ed6 f5 21.Qh4 Kf7 22.Ra3 f4 23.Qf4 Ke8 24.Rf3 ab5 25.Qf8#) 1–0. guest1277 – guest784, ICC, 2003.

2.Bb2 f6

3.a3 d5 4.Nf3 (4.e4 Nh6+=) 4...h5 (better 4...g4!? 5.Nh4 a5=) 5.Ng5+– Bh6 (5...fg5 6.Bh8 Pinning (6.Bh8 Deflection)) 6.Nf3 Bf5 7.d3 e6 (7...Rh7 8.Nh4 Bd7 9.e4+–) 8.Nbd2 (8.Nh4 Bh7+–) 8...Nd7 (8...e5 9.e4 Bg4 10.Be2+–) 9.e4 Bg6 10.ed5 ed5 11.Be2 Qe7 12.0–0 0–0–0 13.Re1 Qg7 14.c4 Ne7 15.Nd4 Qf7 16.Bf3 (16.N2f3 dc4 17.dc4 Bf4+–) 16...Bd3?? (16...Ne5!? 17.Be2 Bd3 18.cd5 Nd5=) 17.cd5 (17.Ne6 dc4 18.Nd8 Rd8 19.Bh5 Qg7+–) 17...Nd5? (17...Ne5 18.Ne6 Bd2 19.Nd8 Rd8 20.Bh5+= (worse 20.Qd2 Nf3 21.gf3 Qg6 22.Kh1 Nd5+=)) 18.N2b3 (18.Ne6 Nf4 19.Nd8 Rd8+–) 18...Bc4? (18...Ne5!?+=) 19.Na5 (better 19.Ne6 Nf4 20.Nd8 Rd8 21.Na5+–) 19...N7b6? (better 19...Ne5+–) 20.Qc2+– (20.Nc4?! Nc4 21.Nf5 Bd2 22.Bd5 Rd5+=) 20...Nf4 (20...Ba6 21.b5 Bb5 22.Nb5 Kb8+–) 21.Bb7 Kd7 22.Qf5 Be6 23.Ne6 Ne6 24.Rad1 Ke7 25.Nc6 Kf8 26.Rd8 Nd8 27.Nd8 Qb3 28.Qf6 Kg8 29.Re8 (29.Qh8) 29...Bf8 (29...Kh7 30.Rh8) 30.Qg7 (30.Qh8) 1–0. pions (1660) – bigfrostgiant, gameknot.com, 2018.

3.a4 d5 4.b5 b6 5.e3 Bb7 6.Nc3 e5 7.d4 e4 8.Qh5 Kd7 9.Qg4 Ke8 10.Qe6 Qe7 11.Qf5 Nh6 12.Qh3 c6 13.bc6 Nc6 14.Nd5 Qd6 15.Nc3 Nb4 16.Rc1 f5 17.Ba3 Rc8 18.Nb5 Qb8? 19.c3+– Nd5 20.Bf8 Rf8 21.Qh6 Rc6 22.Qg5 a6 23.Na3 Nc3 24.Qh5 Kd8 25.Bc4 Na4 26.Qh7 b5 27.Qh4 Kc8 28.Be6 Kc7 29.Qe7 Kb6 30.Rc6 Bc6 31.Qb4 f4 32.Nc4 Ka7 33.Qe7 Ka8 34.d5 Re8?? 35.Qf7 bc4+= 36.dc6?? Re6 37.Qe6?? Qb1 38.Kd2 Qb2 39.Ke1 Qc1 40.Ke2 Nc3 0–1. Seimi Agus Eion – goatmilk, ChessWorld.net, 2005.

3.b5 b6 4.a4 e5 5.d4 (5.e4 Ne7+–) 5...ed4 6.Qd4 c6 (6...Bb7 7.Nf3 Bc5 8.Qc4+=) 7.e3 (7.Nf3 d5 8.Ng5 Bf5+–) 7...Bc5 (7...d5 8.Nc3+=) 8.Qe4+– Qe7 9.Qe7 Ne7 (better 9...Be7!? 10.Nf3 Bb4 11.Nbd2 g4+–) 10.Bf6+– Rg8 11.Bc4 (11.Nf3 h6+–) 11...Rf8 (11...Rg6!? 12.Bb2 d5+–) 12.Bg5 Bb4 (12...a6 13.bc6 Nbc6 14.Bd3+–) 13.c3 Bc5 14.Nf3 cb5 (14...d5 15.Bb3+–) 15.Bb5 (15.ab5 Bb7+–) 15...Ba6 (15...a6 16.Bd3 h5 17.a5+–) 16.Be7 (16.Nbd2 Nd5 17.Ne4 Be7+–) 16...Ke7 17.Nbd2 Bb5 18.ab5 a6 19.Ne4 d5 (19...Rc8 20.Ke2+–) 20.Nc5 bc5 21.0–0 Rf6 22.Rfb1 (better 22.Rfd1 Rd6 23.Ng5+–) 22...Rf8? (22...Rb6 23.e4 de4 24.Nd2+–) 23.e4 (better 23.ba6!? Ra7 24.Rb7 Rb7 25.ab7 Rf6+–) 23...de4 24.Ne5 (24.Re1 Rf4+–) 24...Nd7 (better 24...Rf5 25.Nc4 Rf6+–) 25.Nc6?? (better 25.Nd7 Kd7 26.ba6+–) 25...Kd6+– 26.Rd1 Ke6?? (26...Kc7 27.c4+=) 27.c4?? (better 27.Ra6 Ra6 28.ba6+–) 27...ab5+– 28.cb5 The passed pawn on b5 will quickly become a dangerous weapon 28...Ra1 29.Ra1 Nf6? (29...Ne5 30.Ne5 Ke5 31.Rc1+=) 30.Rc1 (30.b6 Kd6 31.b7 Kc6+–) 30...Ng4? (30...Kd6 31.Na5 Rb8 32.b6+–) 31.Rc2 (better 31.Rc5!? Nf2 32.Nd4 Kd7 33.Rd5 Kc8 34.Rh5+–) 31...Ra8+– Threatening mate... how? 32.h3?? (better 32.g3 Kd6 33.Kg2+–) 32...Ne5 (32...Ra1 33.Rc1 Rc1) 33.Rc5+– Nd3 34.Rh5 Ra1 35.Kh2 Rb1 (35...Kd6 36.Rh7 Nf2 37.Rh6 Kc5 38.Rh5 Kd6 39.g4+–) 36.Nd4 Kf6 37.Rh7 Nf2 38.Rb7 (38.Rh5 Ke7+–) 38...e3 (38...Ke5 39.Rd7+–) 39.Kg3 Re1?! (39...Ke5 40.Nc6 Kd6+–) 40.Kf3 Nd3 (40...Nd1 41.Nc2 Rf1 42.Ke2+–) 41.Ne2 Nc5 42.Rb8 Nd7 43.Rd8 Ne5 (43...Ke7 44.Rc8+–) 44.Ke3 Nc4 45.Kf2 Rb1 46.Rb8 Nd6 47.b6 (better 47.Nd4+–) 47...Nc4 (47...Ke5+–) 48.b7 Na5 (48...Kg7 49.Rc8 Rb7 50.Rc4+–) 49.Rf8 Ke7 50.b8Q Rb8 51.Rb8 (51.Rb8 Nc6 52.Rb5+–) 1–0. lindsey000 – hurricanerob3, gameknot.com, 2017.

3.b5 d5!?+=.

3.b5 h5 4.c4 Bg7 5.e3 d6 6.Be2 Be6 (6...g4 7.Qc2+=) 7.Bh5 Kf8 (7...Kd7 8.Be2+/–) 8.Be2 Nd7 9.h3 Ne5 (9...a6 10.ba6 Ra6 11.d4+/–) 10.Qc2+– c6 11.d4 Nf7 12.Nf3 cb5 13.cb5 Rc8 14.Qd3 (14.Qe4 Bc4 15.Bc4 Rc4 16.Qb7 Rc2+–) 14...b6 (14...Bc4 15.Qa3 Be2 16.Ke2+/–) 15.a4 (15.d5 Bd7+–) 15...Ngh6 (15...Bc4 16.Qd1+/–) 16.Nbd2 (16.d5 Bd7+–) 16...Bf5 17.e4 Bg6 18.0–0 (18.d5 Ke8+–) 18...e5? (18...d5!?+/–) 19.Ba3 (19.Rac1 Rc1 20.Rc1 f5+–) 19...Kg8 (19...f5 20.Rfc1 Ke8 21.de5+–) 20.d5 (20.Rac1!? f5 21.de5 Be5 22.Rc8 Qc8 23.Ne5 de5+–) 20...f5+/– 21.Rfc1 fe4 22.Ne4 g4 23.Nh2?? gh3? 24.gh3?? Qd7?? 25.Bg4 Ng4+= 26.Ng4 Ng5?? 27.Rc8 Qc8–+ 28.Nd6 Qg4! 29.hg4 Bd3 30.Rc1 Bg6?? 31.Rc8+= Kh7 32.Rc7 Nf3 33.Kg2+= Ne1 34.Kg3 Bc2 35.Ra7 1–0. chybol3 – bedri33, playok.com, 2013.

3.Nc3 Nc6 4.a3 Ne5 5.g3 Nc4 6.Rb1 (6.e4!? Nd6 7.h4+/–) 6...Nb2= 7.Rb2 b6 8.e3 Bb7?? (8...Nh6+=) 9.f3 (9.Qh5) 9...g4 10.e4 gf3 11.Qf3 Bg7 (11...Nh6!?=) 12.Bc4 (12.Bc4 e6 13.Qh5 Ke7 14.Qg4+=) 1–0. BLUEMOONIE – pumpy, ChessWorld.net, 2012.

3.Nc3 e6 4.a3+=.

3.Nc3 Bg7 4.Nf3 (4.e4 Nh6+/–) 4...d5+= 5.e3 (5.e4 g4 6.Nh4 de4 7.Ne4 Qd5=) 5...Nc6 (5...e5 6.h3=) 6.b5 (6.Bb5 Qd6+=) 6...Na5= 7.Be2 Bf5 (7...g4 8.Nd4 e5 9.Nb3 Nb3 10.ab3+=) 8.0–0 (8.Nd4 Bc8+/–) 8...Qd7 (8...e5 9.d4 e4 10.Nd2+=) 9.a4 (9.Nd4 Bg6+/–) 9...0–0–0+= 10.Nd4 (better is 10.d3+=) 10...e5?? (better is 10...Bg6=) 11.Nf5+– Qf5 (11...h5 12.Ng7 Qg7+–) 12.Bg4 Qg4 13.Qg4 Kb8 14.Qe6 Ne7 15.Qe7 Bh6 16.Qf6 Nc4 17.Bc1 d4 18.Qh6 de3 19.fe3 g4 20.d3 Rd6 21.Qg7 Rdd8 22.e4 Rdg8 23.Qe7 Re8 24.Qb4 Nd6 25.Be3 h5 26.Nd5 h4 27.Qa5 b6 28.Bb6! cb6 29.Nb6! ab6 30.Qb6 Nb7 31.a5 g3 32.a6 Re7 33.ab7 Rb7 34.Qd6 Kc8 35.Qe5 Rg8 36.Qe6 Kd8 37.Qg8 Kc7 38.Rf7 Kb6 39.Qg6 Kb5 40.Rb7 Kc5 41.Ra4 gh2 42.Kh2 h3 43.Qb6 (43.d4#) 1–0. Salvatore – pieeater, ChessWorld.net, 2009.

3.c4 a5 4.b5 c6 5.Nc3 a4 (5...e5 6.e4+–) 6.Na4 e6 (6...Qa5 7.Nc3+–) 7.e3 cb5 (7...d6 8.Qh5 Ke7 9.Nc3+–) 8.cb5 b6 (8...d6 9.Rc1 Nd7 10.Qh5 Ke7 11.Nc3+–) 9.Qh5 (better 9.Bd4!? Bc5 10.Nc5 bc5 11.Qh5 Ke7 12.Bc5 d6+–) 9...Ke7 10.Ba3 (10.Nc3 Bb7+–) 10...d6+– 11.Bd6?? (better 11.Qd1+–) 11...Kd6 12.Qf3?? (better 12.Nc3–/+) 12...Ra4–+ 13.e4 (13.Ne2 Ra7–+) 13...Ke7 14.Bd3 (14.Ne2 Bb7 15.Nc3 Rd4–+) 14...Bb7 (14...Ra3 15.Rc1–+) 15.Bc2 (15.Ne2 g4 16.Qg3 Bh6–+) 15...Rc4 16.Qa3 (16.Kd1 Qd4 17.Rc1 Be4 18.Be4 Qe4 19.Qe4 Re4–+) 16...Rc5 (better 16...Qd6!? 17.Qa7 Qd7 18.Qa3 Kf7 19.Qb3–+) 17.Ne2 Kf7 18.Bb3 (18.Qa4 Qd7 19.Bb3 Re5–+ (worse 19...Qb5 20.Qa7 Qc6 21.d4–+)) 18...Rb5 (better 18...Be4 19.Qa4 Bg2 20.Be6 Ke6 21.Qg4 Kf7 22.Qg2 Rb5 23.d4–+) 19.Qa7 Qc7 20.Be6 Ke6 Decoy theme: e6 (better 20...Ke8 21.Nc3 Ra5 22.Nd5 Ra7 23.Nc7 Kd8 24.Nd5–+) 21.Nd4 Theme: Double Attack 21...Ke5 (21...Kd7 22.Nb5 Nc6 23.Qa4–+) 22.Nb5 Qc8 (better 22...Nc6 23.Rc1 Na7 24.Rc7 Nb5 25.Rb7 Bc5–+ (worse 25...Ke4 26.Rb6 Nd4 27.a4–+)) 23.Qb6–/+ Be4?? (better 23...Qc6 24.Qd4 Ke6–/+) 24.Qd4+= Kf5 25.Nd6?? (better 25.g4 Kg4 26.Qe4 Kh5 27.h4+=) 25...Bd6–+ 26.g4 Kf4 (26...Kg4 Deflection from e4 27.Qe4) 27.Qe3?? (better 27.Qd6 Kg4 28.f3 Bf3 29.Qg3 Kh5 30.Qf3 Qg4 31.Qg4 Kg4 32.a4–/+) 27...Ke5 28.f3 The mate threat is Qxe4 28...Qc4 29.fe4 (29.Rb1–+) 29...Qf7 (better 29...Qe4 30.h4–+) 30.Qc3 (30.0–0!? Qc4 31.Rac1–+) 30...Ke6 31.Qb3 Ke7 32.Qb7 (32.Qf7 Kf7 33.Ke2 h5–+) 32...Nd7 33.0–0 (33.d3 h5–+) 33...Nh6 (33...Qe6 34.Rf5–+) 34.h3 (34.e5 Bc5 35.Kh1 Rb8 36.ef6 Kd8–+) 34...Rb8 (better 34...Qc4 35.Qd5 Qd5 36.ed5 Be5–+) 35.Qa7 (35.Qa6 Qe6 36.Qe2 Rb4–+) 35...Rb4 (35...Bc5!? 36.Qc5 Nc5 37.e5–+) 36.e5 (36.Rac1–+) 36...fe5 (better 36...Bc5 37.Qc5 Nc5 38.Rf6 Qd5–+) 37.Rf7= Nf7 38.a3? (38.Qa5 Rb2=) 38...Rb2?? (better 38...Rg4! 39.Kh1 Rg3–+) 39.d4 (39.Qa5 Bc5 40.Kg2 Rc2=) 39...e4 (better 39...Rd2!?=+) 40.Re1+= Rd2?? (better 40...Bh2 41.Kf1 Nd6=) 41.Re4+– Kf6 (41...Nfe5 42.Kf1 (42.Re5?! Be5 43.de5 Rd5+–) 42...Rd1 43.Ke2+–) 42.Qd7 Rd1 (42...Kg7 43.a4+–) 43.Kf2 Rd2 (43...Kg7 44.Ke2 Ra1 45.a4+–) 44.Kf3 (44.Ke1!? Rd3 45.Re6 Kg7 46.Rd6 Ra3+–) 44...Rd3 (44...Kg7+–) 45.Ke2 Ra3 46.Qe6 (better 46.Re6 Kg7 47.Rd6 Ra2 48.Ke3 Ra3 49.Ke4+–) 46...Kg7 47.Re3 (better 47.Qf5+–) 47...Ra2 (47...Re3 48.Ke3 Bg3 49.Ke4+–) 48.Kf3 (better 48.Qa2 Nh8 49.Qe6+–) 48...Rh2 49.Qd7 Rh3 50.Ke4 Bf4 (50...Rh1+–) 51.Rh3 Kg6 (51...Bd6 52.Rh7! Kh7 53.Qf7 Kh8 54.Kf5 Bf4 55.Kg6 Bd6 56.Qg7) 52.Qf5 Kg7 53.Qh7 (53.Rh7 Kg8 54.Qf7) 53...Kf6 (53...Kf8 54.Qf5 Ke7 55.Rh7 Bc7 56.Rf7 Kd6 57.Qf6) 54.Qf5 Kg7 (54...Ke7 55.Rh7 Kd8 56.Rf7 Be5 57.Qd7) 55.Qh7 (55.Rh7 Kg8 56.Qf7) 55...Kf8?? (55...Kf6 56.Qg8 Bd2 57.Rh7 Nd6 58.Kd5 Be3 59.Qe6) 56.Qf5 (56.Kd5 Bg3 57.Ke6 Nd8 58.Kf6 Be5 59.de5 Ne6 60.Qf7) 56...Bc7?? (56...Kg7 57.Rh7 Kg8 58.Qf7) 57.Qc8 (57.Rh7 Ke7 58.Rf7 Kd6 59.Qf6) 57...Nd8 (57...Bd8 58.Qe6 Nd6 59.Qd6 Be7 60.Rh8 Kg7 61.Qh6 Kf7 62.Kf5 Bd6 63.Qf6) 58.Qc7 Ke8 (58...Nf7 59.Rh7 Ke8 60.Qf7 Kd8 61.Qd7) 59.Rh8 1–0. MARYMARY – IGNUS, ChessWorld.net, 2013.

3.c4 b6 4.Nc3 Bb7 5.e3 Threatening mate: Qh5 5...a6?? (5...Nh6 6.a3+=) 6.d4 (6.Qh5) 6...e5? (6...Nh6!?+=) 7.Qh5+– Ke7 8.Nf3 (better 8.de5 Bg7 9.Nd5 Bd5 10.cd5 fe5 11.Nf3+–) 8...Qe8+= 9.Qg4 Nh6 10.Qg3 d6 (better 10...Kd8!? 11.de5 Qg6+=) 11.de5+– de5 12.Ne5! Nf5 (12...fe5 13.Qe5 A double attack) 13.Qg4 (13.Qh3 Ne3 14.Qe3 fe5+–) 13...Nd6 (better 13...Nh6!? 14.Qd4 Ke6+–) 14.Nd5+– Bd5 15.cd5 Bg7 16.Qe6 (16.Nf3 h6 17.Qe6 Kf8+–) 16...Kd8 17.Nc4 Qe6 18.de6 Re8 (18...Ke7 19.Nd6 cd6 20.h4+–) 19.Nd6 cd6 20.Bc4 b5? (better 20...Nc6 21.h4 g4+–) 21.Bd5 Ra7 22.0–0 (better 22.Bd4!? Rc7 23.Bb6 Kc8 24.Bc7 Kc7 25.Rc1 Kd8+–) 22...Rc7? (better 22...f5 23.Bg7 Rg7+–) 23.Rac1 Rce7 (23...Rc1 24.Rc1 (24.Bc1?! Ke7+–) 24...Bh8 25.Bd4+–) 24.Rc2 Rc7 25.Rfc1 (better 25.Rc7 Kc7 26.Rc1 Kd8+–) 25...Ree7 (25...Rc2 26.Rc2 Bh8 27.g4+–) 26.Rc7 (better 26.Bd4 Rc2 27.Rc2+–) 26...Rc7 27.Rc7 Kc7 28.Bd4 h5?? (28...Nc6 29.Bc6 Kc6 30.f4 gf4 31.ef4+–) 29.Kf1 (better 29.Bb6! Kc8 30.e7+–) 29...Kd8? (29...Nc6 30.Bc3 h4+–) 30.Ke2 (30.Ba7!? f5+–) 30...a5 31.Bb6 Ke7 32.ba5 Na6 (32...f5 33.Bb7+–) 33.a3 f5 34.f4 (better 34.Bb7 Nb8+–) 34...gf4 35.ef4 Bb2 (35...b4 36.ab4 Nb4 37.Bc4+–) 36.Kd2 (better 36.Bb7 Nb8 37.Bc7 Bc3+–) 36...Ba3 37.h3 (better 37.Bf2 Kf8 38.Bh4+–) 37...Nc5 38.Ke3 Ne6?? (better 38...h4+–) 39.Be6 Ke6 40.a6 b4 (40...Bc1 41.Kd3 Kd5 42.a7+–) 41.a7 b3 42.Bd4 (better 42.a8Q Bc1 43.Kf3 b2 44.Qc8 Kd5 45.Qf5 Kc4 46.Qc2 Kb4+–) 42...Bc5 (42...b2 43.Bb2! Bc5 44.Bd4 Ba7 45.Ba7 Kd5+–) 43.a8Q Bd4 44.Kd4 b2 45.Qb7 (45.Qb7 h4 46.Qb2 Kf7 47.Kd5 Kg8 48.Qb7 Kh8 49.Ke6 d5 50.Kf6 d4 51.Qg7) 1–0. moss42 (1900) – Delboy Smith (1785), ChessWorld.net, 2016.

3.c4 f5 4.Bh8 f4 5.e3 fe3 6.de3 Nf6 7.Bf6 ef6 8.Qh5 Ke7 9.Qh7 Kd6 10.Nc3 Ke5 11.Qe4 Kd6 12.Rd1 1–0. Evgenii_777 (1665) – Alainmdplus (1615), lichess.org, 2020.

3.d3 e5 4.a3=.

3.d3 Bg7 4.e4+= h5 (4...Nh6 5.d4+=) 5.Be2+/– d6 (5...g4 6.h3 Bh6 7.c4+=) 6.Nd2 (6.Bh5 Kd7+/–) 6...Nc6? (6...g4 7.d4+=) 7.a3 (7.Bh5 Kf8 8.b5 Ne5 9.Be5 fe5+/–) 7...Be6 8.Bh5+– Bf7 9.Bf7 Kf7 10.Ne2 Qd7 11.Rb1 Rf8 12.Ng3 Ne5 13.Nf5 c6 14.d4 Ng6 15.c3 Nf4 16.Qf3 Ke8?? 17.Ng7 Kd8 18.Nf1 b6? 19.Nf5 d5 20.h4 de4 21.Qe4 a6 22.g3 b5 23.gf4 Re8 24.Ng7 Rf8 25.Ne6 Kc8 26.Nf8 Qe8 27.Qe6 Kb8 28.Nd7 Ka7 29.Qc6 e5 (29...e5 30.Qc7 Ka8 31.Nb6#) 1–0. alexson – pieeater, ChessWorld.net, 2009.

3.d4 Nc6 4.a3 d5 5.b5 Na5 6.Nd2 e6 7.Qb1 b6 8.e4 Bb7 9.e5 h5 10.Qd1 a6 11.ba6 Ba6 12.Ndf3 Bf1–/+ 13.Kf1 Ne7 14.ef6= Nf5 15.Ne5 Qf6=+ 16.Qd3 Bd6 17.Re1 Rc8 18.Qb5+= c6 19.Qb6 Nc4 20.Qa6?? Qd8?? 21.Nc4+– dc4 22.Re6 Kf7 23.Qc4 Kg7 24.d5 Kh7 25.dc6 Rg8 26.Qe4 Rf8 27.Nf3 Rb8 28.c7 Qc7?? 29.Ng5 Kg8 30.Rg6 Ng7 31.Qe6 Rf7 32.Rg7 (32...Kf8 33.Nh7) 1–0. Tricky.1 – goatmilk, ChessWorld.net, 2005.

3.d4 d5 4.e3=.

3.d4 e6 4.Nc3 (4.a3 d5+=) 4...Be7 (better is 4...Bb4!? 5.a3 Ba5=) 5.a3+= h5 (5...Nh6 6.e4+=) 6.Qd3 (6.e4 a5 7.b5 f5+/–) 6...Nh6 7.Qg6 (7.e4 a5 8.b5 Nf7+=) 7...Nf7 8.d5 Rh6 9.Qd3 (9.Qg8 Bf8+=) 9...Ne5= 10.Qd2 (10.Qd4 d6=) 10...Nc4 11.Qc1 Nb2 12.Qb2 e5 (12...f5 13.Rd1=) 13.e4 d6 (13...a5 14.b5=) 14.Bb5 Bd7 (14...Nd7 15.Nge2+=) 15.Bd3 (15.Bd7 Qd7 16.Nge2 h4+=) 15...Bg4 (15...h4 16.h3+=) 16.f3 Bd7 17.0–0–0 (17.Nge2 h4+=) 17...g4 (17...c6 18.Qb3=) 18.Nge2 gf3 (18...gf3 19.gf3 c6=). delex – Craig485586, ChessWorld.net, 2009.

3.d4 Bg7 4.e4+= Nh6 5.Bc4 (5.Qh5 Nf7+=) 5...e6+= 6.Nf3 (6.Qh5 Nf7+=) 6...d6 (6...d5 7.Bd3+=) 7.0–0+= Nc6 (7...f5 8.e5+=) 8.a3 (8.b5 Ne7+/–) 8...Bd7 (8...g4 9.Nfd2+=) 9.Bb3 (9.d5 ed5 10.Bd5 Qe7+/–) 9...Qe7 10.c4 (10.d5 ed5 11.ed5 Ne5+=) 10...0–0–0 (10...g4 11.Ne1=) 11.d5 ed5 12.cd5 Ne5 13.Nc3 (13.Ne5 de5 14.Nc3 Kb8+=) 13...Nhg4 (13...f5 14.Re1+=) 14.Ba4 (14.Nd4 Kb8+/–) 14...Ba4 (14...f5 15.Bd7 Rd7 16.Nd4 fe4 17.Ne4+=) 15.Qa4 Kb8 (15...Nc4 16.Bc1 Kb8 17.Qb5+/–) 16.Ne5 (16.Nd4 Rc8+–) 16...de5 (16...Qe5!? 17.g3 Qe8+=) 17.Rac1 h5? (better is 17...Rd7+/–) 18.Nb5+– a6 19.Rc7 Qe8? 20.Rfc1 Qb5 21.Qb5 ab5 22.h3 Nh6 23.Rg7 h4 24.Rc5 Ka7 25.Rb5 Rb8 26.a4 f5 27.Be5 Rbc8 28.Rbb7 Ka8 29.Ra7 1–0. retiponziani – pieeater, ChessWorld.net, 2009.

3.d4 h5 4.d5 (4.e4 e6+=) 4...d6 (4...e6 5.a3=) 5.e4 Bg4 (5...e5 6.Bd3+=) 6.f3 (6.Be2 a5+–) 6...Bd7+= 7.Bc4 Nh6 8.Ne2 Nc6?? (better 8...c6+–) 9.dc6+– Bc6 10.Nd4 (better 10.h4 g4 11.Nf4+–) 10...Qd7 (10...Bd7 11.Ne6 Qc8 12.Nf8 Rf8 13.Nc3+–) 11.Be6 (better 11.b5 Bb5 12.Bb5 c6+–) 11...Qd8 12.f4 Bd7 (12...Ng4 13.Nc6 bc6 14.fg5 a5+–) 13.Qh5 Nf7 14.Qf7 (14.Bf7?!=) 1–0. MARYMARY – pieeater, ChessWorld.net, 2009.

3.d4 Nh6 4.e4+= d5 5.Qh5 Nf7 6.e5 fe5 7.de5 Bg7?? 8.Nf3 h6?? 9.c4 dc4? 10.Nd4?? Be5 11.Ne6?? Be6 12.Be5=+ Rh7 13.Bc3 Qd7?? 14.Qg6+– Qd6 15.Qg8 Kd7 16.Qh7 Nc6 17.b5 Nce5 18.Be2 Rh8 19.Qg7 Ng4 20.h3 Nf6 21.0–0 Rg8 22.Rd1?? Qd1! 23.Bf1?? Rg7 24.Nd2 Qa4 25.Be2 Qb5 26.Rd1 Kc8 27.Rb1 Qa6 28.Rb2 Qa3 29.Nb1 Qd6 30.a4 Nd5 31.Bg7 Nf4 32.Bf3 Bd5 33.Bg4 e6 34.a5 Bg2 35.Rd2 Qb4 36.Nc3 Bh3 37.Nd1 Qd2 38.Bc3 Ne2 39.Kh2 Qd1 40.Be2 Qe2 (41.Kh3 Qf3 42.Kh2 Qf2 43.Kh1 Qf3 44.Kg1 Qc3–+) 0–1. Tricky.1 – Seimi Agus Eion, ChessWorld.net, 2005.

3.e3 b6?? 4.Qh5 1–0. GuestDMQZ – lionjoshi, freechess.org, 2017.

3.e3 d6 4.h4 (4.Qh5!? Kd7 5.Nf3+–) 4...g4= 5.Ne2 (5.Bb5 c6 6.Be2 Nh6=) 5...h5 (5...e5 6.d4=) 6.Ng3 (6.Nf4 e5 7.Ng6 Rh6 8.Nf8 Kf8+=) 6...e5 7.Bd3 Ne7 8.c4 (8.0–0 f5+=) 8...f5= 9.Nc3 Nbc6 (9...Bg7 10.Qb1=) 10.a3 (10.b5 e4 11.bc6 ed3+–) 10...Be6 (10...e4 11.Nce4 Ne5 12.Be5 de5 13.Nf6 Kf7 14.Nd5+=) 11.0–0 (11.b5 Na5 12.Qa4 b6=) 11...Bg7 12.f4 (better 12.b5!? Na5 13.Qa4=) 12...e4 (12...gf3 13.b5 fg2 14.Kg2–/+) 13.Be2 Kf7 (13...Ng6 14.b5 Nd4–/+ (worse 14...Qh4 15.bc6 bc6 16.Qa4+=)) 14.Qc2 (14.b5 Nb8 15.d3 ed3 16.Bd3 Nd7+=) 14...Ng6 (better 14...Bf6+=) 15.d3?? (better 15.Nce4 fe4 16.f5 Bb2 17.fg6 Kg7 18.Qb2 Ne5 19.Ne4 Qh4 20.Rf4+–) 15...Qh4–/+ 16.Nh1?? (better 16.de4 Qg3 17.ef5 Nf4 18.fe6 Kg8 19.Rf4 Qe3 20.Kh1 Qf4 21.Nd5–/+) 16...g3–+ 17.Ng3 Qg3 18.Bc1 (18.de4 Qe3 19.Kh2–+) 18...Nh4 19.Rf2 Rhg8 (better 19...Nd4 20.Qd2 Ndf3 21.Bf3 Nf3 22.Rf3 ef3–+) 20.Bh5 Kf8 (better 20...Ke7 21.Ne2 Qf2 22.Kf2 Ba1 23.g3–+) 21.Ra2 (21.Ne2 ed3 22.Qd3 (22.Ng3?? dc2 23.Ra2 Nd4–+) 22...Qf2 23.Kf2 Ba1 24.Bf3 Nf3 25.Kf3–+) 21...Rh8 (better 21...Nd4 22.Qd1 Ndf3 23.Bf3 Nf3 24.Rf3 ef3 25.Qf3 Qf3 26.gf3 Bc3 27.Kf1–+) 22.Bd1?? (better 22.Ne2 Nd4 23.ed4 Qd3 24.d5 Qc2 25.Rc2–+) 22...Nf3! 23.Bf3 ef3 (23...Nd4 24.ed4 ef3 25.Ne2 fe2 26.Re2 Bd4 27.Be3 Be3 28.Re3 Qe3 29.Qf2 Qc1 30.Qf1 Rh1 31.Kh1 Qf1 32.Kh2–+) 24.Rf3 Qh2 (better 24...Qe1 25.Rf1 Qc3 (25...Bc3?! 26.Re1 Be1 27.Bb2=) 26.Qc3 Bc3–+) 25.Kf2 Bf7 26.Ne2 Ke7 (26...Bf6 27.Ng1–+) 27.Bb2 (27.Ng3 Be6 28.d4–+) 27...Rag8 (better 27...Bb2 28.Rb2 Rhg8–+) 28.b5?? (28.Rg3 Bb2 29.Qb2 Rg3 30.Ng3–+) 28...Bb2 29.Qb2 (29.Ke1 Qg2 30.Rf1–+) 29...Rg7 (better 29...Qg2 30.Ke1 Qf3–+) 30.Qg7+– (30.bc6? Qg2 31.Ke1 Rh1 32.Kd2 Qe2 (32...Qf3 33.Qg7 Qf1 34.Qg5 Ke8 35.Kc3 Qe1 36.Kd4–+) 33.Ke2 Rg2 34.Rf2 Bh5 35.Kd2 Rf2 36.Kc3 Rb2 37.Rb2 b6–+) 30...Rg8 (30...Qh4 31.Qg3 Na5 32.Qh4 Rh4 33.Nd4+–) 31.Qg8! Bg8 32.bc6 (better 32.Rh3 Qh3 33.gh3+–) 32...bc6 (32...Qh4 33.Rg3 b6+–) 33.Rh3 Qh3 34.gh3 d5 (34...c5 35.Rb2 d5 36.Rb8+–) 35.c5 d4 36.Rb2 de3 37.Ke3 Bd5 (37...a5 38.Rb7 Kd7 39.Ra7+–) 38.Nd4 (38.Rb7 a6+–) 38...Kd7 39.Rb8 Ke7 (39...a5 40.h4 Ke7 41.Nf5 Kf6 42.Nd4+–) 40.Rh8 (40.Nf5!? Kf6 41.Rf8 Kg6 42.Ne7 Kg7+–) 40...Kf6 41.h4 Kg7 (41...Kg6 42.Ra8 a5 43.Ra5+–) 42.Rc8 Kf6 43.Rc7 Kg6 44.Ra7 Kh5 45.Rg7 Kh4 (45...Bf7 46.Rf7 Kg6 47.Rf5 Kg7 48.Ne6 Kh7 49.Rf8 Kg6 50.f5 Kh7 51.h5 Kh6 52.Rh8) 46.Nf5 Kh5 (46...Kh3 47.Kf2 Be6 48.Ne3 Bf5 49.Rg3 Kh4 50.Nf5 Kh5 51.Rg5) 47.Rg5 1–0. FeegLood (2675) – fickle05 (2395), lichess.org, 2015.

3.e4 b6??4.Qh5 1–0. Trkn – Jan, itsyourturn.com, 2000; Arran – goatmilk, ChessWorld.net, 2005.

3.e4 Nc6?? 4.Qh5 1–0. Trkn – arisfire, itsyourturn.com, 2000.

3.e4 d6 4.Qh5 Kd7 5.Nf3 a5 6.Ng5 Nh6 7.Bc4 ab4 8.Ne6 Qe8 9.Qe8 Ke8 10.Nc7 Kd8 11.Na8 Nd7 12.a3 ba3 13.Ra3 Ng4 14.d4 Bh6 15.h3 Ne3 16.fe3 Be3 17.Re3 b6 18.Nd2 Bb7 19.Ra3 Rf8 20.Be6 h5 21.Ra7 Kc8 22.Nb6 Kc7 23.Nd7 Rd8 24.d5 Rg8 1–0. marekt – goatmilk, ChessWorld.net, 2005.

3.e4 Bh6 4.h4 gh4 5.Qh5 Kf8 6.b5 Qe8 7.Qh4 c6 8.Nc3 d5 9.ed5 Bd7 10.bc6 bc6 11.Bd3 cd5 12.Nd5 Nc6 13.Nf3 Rb8 14.Rb1 e6?? 15.Nf6 Qf7 16.Ba3 Kg7 17.Qg3 Kf6 18.Rh6! Nh6 19.Qg5 1–0. mrkt – aswin15380, Yahoo, 2005.

3.e4 Nh6 4.Qh5 Nf7 5.Nf3 Rg8 6.Bc4 (better 6.b5+–) 6...Rg7? (better 6...e6+–) 7.Ng5!+– Rg5 (7...fg5 8.Bg7 Combination; 7...Rg5 8.Qf7 Mate attack) 8.Bf7 (8.Qf7) 1–0. DEFFM – GuestWVBD, freechess.org, 2019.

3.Nf3 Na6 4.a3 d6 5.Ng5+/– e5 6.Nf3 Be6 7.e4 Qd7 8.Ba6 ba6 9.d4 Bg4 10.h3 Bf3 11.Qf3 Ne7 (12.Qf6 Rg8 13.de5 Qc6+–; 11...a5 12.Bc3+–). jelgava – Seimi Agus Eion, ChessWorld.net, 2005.

3.Nf3 Nc6 4.a3 d5 5.g3 e5 6.d3 d4 7.Bg2 Bf5 8.Nbd2 a5 9.b5 Nce7 10.c3 Nd5 11.cd4 ed4 12.Bd4 Nc3 13.Qc2 Nb5 14.0–0 Ba3 15.Bb2 Bb2 16.Qb2 1–0. paschalina – pavluchenko89, kurnik, 2014.

3.Nf3 e5 4.e4 d6 5.Ng5 fg5 6.Qh5 Kd7 7.Qg4 Ke7 8.Qg5 Nf6 9.Bc4 Bg7 10.Be5 de5 11.Qe5 Kf8 12.Qf4 Ke8 13.e5 h5 14.ef6 Bh6 15.f7 Kf8 16.Qe5 Nc6 17.Qh8 Ke7 18.Qh6 Nd4 19.0–0 Be6 20.Re1 Qf8 21.Be6 Ne6 22.Qe6 Kd8 23.Qe8 1–0. Adjailton (1840) – Shkodra (1725), lichess.org, 2020.

3.g4 Nh6 4.h3 b5 (4...e5!?=) 5.Bg2+= c6 6.e4 (6.a4!?+=) 6...e5= 7.d4 a5 (7...Bb4 8.Nd2+=) 8.a3 ab4 9.de5 fe5 10.Be5 Rg8 11.Bb8 Rb8 12.ab4 Qb6 (better is 12...Bb4!? 13.c3 Bc5=) 13.c3 Rg7 (13...c5 14.bc5 Bc5 15.Qd2+/–) 14.Nf3 c5 15.Qd5 (better is 15.bc5 Qc5 16.0–0+/–) 15...Bb7?? (better is 15...cb4 16.0–0 Qc5+=) 16.Qe5+– Re7 (16...Kf7 17.Qb8 Bd6 18.bc5 Bc5 19.0–0+–) 17.Qb8 Kf7 18.0–0 Re8 (18...Qc6 19.e5 Kg7 20.Ra7+–) 19.Ng5 Ke7 20.Qe5 (better is 20.Qa7 Qa7 21.Ra7 Bc6+–) 20...Kd8 21.Qf4 Bd6 (21...cb4 22.cb4 Bb4 23.Nh7+–) 22.Qf6 Kc8 23.Qh6 (better is 23.e5 Bg2 24.Qh6 Bf1 25.Ra8 Kb7 26.Re8 Bd3 27.ed6 Bg6 28.bc5 Qc5+–) 23...Qc7 (23...Bh2 24.Kh2 Qh6+–) 24.Nf7 Be4 25.Nd6 Kd8 26.Ne8 Ke8 27.Be4 d6 28.Ra8 Kd7 29.Qh7 Ke6 30.Re8 Kf6 31.Qg6# 1–0. 488 – dunk0104, ChessWorld.net, 2013.

3.h3 e5 4.e4 Bb4 5.Qh5 Ke7 6.h4+=.

3.h3 h5 4.Nf3 (4.e4 e5+=) 4...e6 (4...e5 5.a3=) 5.g3 (5.a3 Rh6+=) 5...d5 6.a3 c5 (6...e5 7.Bg2=) 7.bc5 Bc5 8.e3 Nc6 (8...Rh6 9.c4=) 9.d4 (9.Ng5 h4 10.Be2 Qb6=) 9...Bd6= 10.Bd3 Nge7 11.Nbd2 e5 (11...Qb6!? 12.Rb1 Qa5=) 12.de5+= fe5 (12...Ne5 13.Be5 Be5 14.Ne5 fe5 15.Be2+=) 13.e4 (13.Ng5 h4 14.Qf3 e4 15.Qf7 Kd7+=) 13...d4 14.Ng5 Ng6 15.h4 Be7 16.Ndf3 Bg4 17.Be2 Bg5 18.Ng5 Be2 19.Qe2 Qf6 (19...Qa5 20.Kd1+=) 20.0–0 0–0–0 (20...Rd8 21.Rad1+/–) 21.Qf3 Rhf8 22.Qf6 Rf6+= 23.Rad1 Na5 24.c3 Nc4 25.Ba1 d3–/+ 26.Rfe1 Nh8 27.Kg2 Nf7 28.Nf3 d2 29.Re2 Rd3 30.Nd2+= Nd2? 31.Red2+– Rd2 32.Rd2 Rd6 33.Re2 Rd1 34.Bb2 Rb1 35.Rc2 Nd6 36.c4 Ne4 37.Be5 Rb3 38.Re2 Nc5 39.Bd6 b6? 40.Bc5 bc5 41.Re5 Ra3 42.Rc5 Kb7 43.Rh5 Ra4 44.Rc5 Kb6 45.Rc8 a5 46.c5 Kb7 47.Rh8 Rc4 48.Rh5 Kc6 49.Rg5 Rc5?? 50.Rg4 Kb5 51.Rd4 a4 52.Rd8 a3 53.Ra8 Kb4= 54.Kh3 Kb3 55.f3 a2 56.Rb8?? Kc2 57.Ra8= Kb1 58.g4 a1Q 59.Ra1+= Ka1 60.Kg3 Kb2= 0–1. Fournier,Frederic (1860) – librevuelo (1615), Active, 2011.

3.h4 d5 4.hg5 Bg7 5.e3 Bf5 6.Ne2 Qd6 7.Ng3 Bg6 8.Nh5 Nd7 9.Ng7 Kd8 10.a3 a5 11.b5 Nc5 12.a4 b6 13.gf6 Nf6 14.d4 Nce4 15.Ba3 Qd7 16.Be2 Rg8 17.Nh5 Nh5 18.Bh5 Bh5 19.Qh5 Qg4 20.Qd5 Qd7 1–0. Machete99 – guest308, ICC, 2002.

3.h4 Bg7 4.hg5 e6 5.gf6 Bf6 6.Nc3 b5 7.e3 a5 8.Qh5 Ke7 9.d4 ab4 10.Ne4 h6 11.Nf6 Nf6 12.Qh4 Ke8 13.d5 ed5 14.Bf6 Qf6 15.Qf6 1–0. KIC8462852 (1655) – EvgeniyR (1605), lichess.org, 2018.

3.h4 h6? 4.hg5 Bg7 (4...Rh7 5.Nf3 Rg7 6.gh6+–) 5.gh6. GuestKVYG – GuestCCJP, freechess.org, 2017.

3.h4 Bh6? 4.e4+– e5 5.Qh5 Ke7 6.hg5 fg5?? (6...Bg5 7.Nf3 d6 8.Ng5 fg5 9.Qg5 Kd7 10.Qg7 Ne7+–) 7.Be5 Qe8 (7...Nc6 8.Bh8 Nb4 9.Na3+–) 8.Qe8 Ke8 9.Bh8 Ne7 (9...Nc6 10.Bc4 Kf8+–) 10.Rh6 d5 11.ed5 (11.Bd3!? Nbc6 12.a3 de4 13.Be4 Bf5 14.Bf5 Nf5 15.Rh7 Rc8+–) 11...Nd5 12.Bc4 (better is 12.Bd3!? Nb4 13.Be4 Nd7+–) 12...Nb4 13.Na3 Bf5 14.0–0–0 Kd8 (14...N8c6 15.Re1 Kd7 16.Bc3+–) 15.Bf6 Kd7 16.Re1 N8c6 17.Nf3 g4 18.Ne5 (better is 18.Nh4 Bc2 19.Nc2 Nc2 20.Kc2 Rf8 21.Rh7 Kc8 22.Be6 Kb8+–) 18...Ne5 19.Re5 Bg6 20.Re7 Kc6 21.Bb3 Rf8 22.Be5 Kb6 23.Bc7 (23.Reh7 Rf6 24.Bf6 Na2 25.Ba2 Ka5 26.Rg6 Ka4 27.Bb3 Kb4 28.Bc3 Ka3 29.Rg4 a5 30.Ra4) 23...Kc6 24.Ba4 b5 25.Bb5 Kd5 26.Re5 Kd4 27.c3 1–0. the horror man – karlsdad, ChessWorld.net, 2013.

3.b5 Bg7

4.a4 Kf7 5.e3 e6 6.Nf3 Ne7 7.Be2 Rf8 8.h3 Kg8 9.0–0 b6 10.Re1 Bb7 11.Nc3 d5 12.Nh2 Nd7 13.Bf3 Rc8 14.Nf1 c5 15.Bh5 Ng6 16.Bf3 Qc7 17.a5 Nge5 18.a6 Ba8 19.Ne2 Nf3 20.gf3 f5 21.Neg3 Bb2 22.Rb1 Bf6 23.Qe2 Rce8 24.Qd1 Kg7 25.Qc1 h6 26.Qa3 Kg6 27.Qd3 c4 28.Qa3 Nc5 29.Qc1 e5 30.Qd1 f4 31.Ne2 Qd6 32.d4 cd3 33.cd3 Ne6 34.Qc2 Rc8 35.Qb3 Nc5 36.Qa3 Be7 37.d4 Nd7 38.Qd3 Kf6 39.Qh7 Rh8 40.Qd3 e4 41.fe4 de4 42.Qd2 f3 43.Neg3 h5 44.Qb2 h4 45.d5 Qe5 46.Qe5 Ne5 47.Ne4 Kf5 48.d6 Bd8 49.Ned2 Rc2 50.Rbc1 Rc1 51.Rc1 1–0. ventil – seven77, kurnik, 2014.

4.c4 h6 5.d4 e6 6.e3 Ne7 7.Bd3 0–0 8.Nf3 d5 9.c5 Nf5 10.Bf5 ef5 11.0–0 Be6 12.a4 c6 13.Nc3 a6 14.b6 Nd7 15.Qb3 Qe8 16.Rfe1 Qh5 17.Na2 g4 18.Nd2 Qg5 19.f4 gf3 20.Nf3 Qg4 21.h3 Qg3 22.Nc3 f4 23.Ne2 Qg6 24.Nf4 Qf7 25.e4 Bh3? (better is 25...Rfe8 26.Ne6 Qe6 27.ed5 Qd5 28.Qd5 cd5+–) 26.Nh3 f5 (26...de4 27.Qf7 Kf7 28.Re4+–) 27.e5 f4 (27...Rfe8 28.Rf1+–) 28.Bc1 (better is 28.e6 Qe7 29.ed7 Qd7+–) 28...Qg6 29.Bf4 Rf4 30.Nf4 Rf8 31.Qd3 Qg4 32.Ng6 Rf5 33.Ne7 Kf7 34.Qf5 Qf5 35.Nf5 Bf8 36.Rf1 Nb8 37.N3h4 Ke8 38.Ng6 Nd7 39.Nf8 Nf8 40.Nd6 Ke7 41.Nb7 Ng6 42.Nd6 Nh4 43.b7 Nf5 44.Nf5 Ke6 45.b8Q a5 46.Qd6 Kf7 47.Nh6 Kg7 48.Qf6 Kh7 49.Nf5 Kg8 50.Qg7 1–0. popovicigelu – hen4daleko, kurnik, 2012.

3.c4 c6

4.c5 a5 5.a3 e5 6.g3 d6 7.Bg2 dc5 8.bc5 Bc5 9.Nc3 Ba7 10.e3 Ne7 11.Ne4 Nd5 12.Ne2 Nc7 13.Qb3 b5 14.Qc2 Bb7 15.N4c3 Nd7 16.0–0 h5 17.f4 Nc5 18.fg5 N5e6 19.Qg6 Kd7 20.gf6 Nf8 21.Qg7 Kc8 22.Qh8 Nce6 23.Qh5 Nd7 24.f7 Kc7 25.Bh3 Qe7 26.Be6 Qe6 27.Ne4 c5 28.Ng5 Qd5 29.e4 Qb3 30.Bc3 Qc4 31.Nh7 Qe4 32.Rf3 Qf3 33.Qf3 Bf3 34.Nc1 Bd5 35.h4 Bf7 36.Ng5 c4 37.Kh2 Bg6 38.Ba5 Kb7 39.Bb4 Nf6 40.Ne2 Bd4 41.Rf1 Nd5 42.Ne6 Re8 43.N6d4 ed4 44.Nd4 Kb6 45.g4 Re4 46.Nc2 Rg4 47.Kh3 Re4 48.Ne3 Nf4 49.Rf4 Rf4 50.Nd5 Kc6 51.Nf4 Bf5 52.Kg3 Bd3 53.h5 Kd7 54.Kg4 Ke8 55.Kg5 Kf7 56.Bc3 Bh7 57.Nd5 Ke6 58.Nc7 Kd6 59.Nb5 Kc5 60.Nd4 Be4 61.Nf5 Kd5 62.h6 Bf5 63.Kf5 Kd6 64.h7 Black resigned 1–0. themuttsknutts (1620) – Eries, ChessWorld.net, 2013.

4.e3 Qb6 5.b5 cb5 6.cb5 Qc5 7.Bd4 Qd5 8.a4 e5 9.Bc3 a5 10.Nf3 g4 11.Nh4 Bb4 12.Qg4 Qf7 13.Qd1 Bc3 14.Nc3 b6 15.Nf5 Qg6 16.Nd6 Kd8 17.Be2 f5 18.Nc8 Kc8 19.0–0 h5 20.Bf3 h4 21.Ba8 Ne7 22.h3 Rg8 23.Qe2 Qg2 24.Bg2 Ng6 25.Kh1 f4 26.Bd5 Rg7 27.Ne4 d6 28.Nd6 Kd7 29.Nc4 Ne7 30.Ne5 Kd6 31.Nc6 Nd5 32.Nb8 Rf7 33.ef4 Nf4 34.d4 Ne2 35.Nc6 Rf3 36.Rae1 Rh3 37.Kg2 Nf4 38.Kg1 Rf3 39.Re3 Nh3 40.Kg2 Ng5 41.Rf3 Nf3 42.Kf3 Kd5 43.Rh1 Kc4 44.Rh4 Kb3 45.d5 Kc3 46.d6 Kb3 47.Ke3 Kc3 48.Rd4 Kb3 49.Kd3 Kb2 50.Rc4 Kb3 51.d7 Ka3 52.d8Q Kb3 53.Qd4 Ka3 54.Qc3 Ka2 55.Qc2 Ka3 56.Rc3 1–0. axtur777 – muzafferbrzn, lichess.org, 2020.

3.c4 d6

4.e3 Be6 5.d3 h5 6.Nf3 Nc6 (6...g4 7.Nfd2+=) 7.b5 Ne5 8.Nd4 Bf7 9.Nf5 (9.Be2 Qd7+=) 9...Qd7= 10.Nd4 Bg7 11.g3 g4 12.Bg2 Rb8 13.0–0 f5 14.a4 h4 15.Nc3 e6 16.a5 b6?? (16...c5 17.Nb3=) 17.f4?? (better is 17.Nc6 Qc8 18.Na7+–) 17...gf3= 18.Nf3 hg3?? (18...Ng4 19.Qe1 hg3 20.Qg3 Bh5 21.ab6 ab6= (worse is 21...Rb6 22.Ra7 Rb8 23.Rfa1+/–)) 19.Ne5+– Be5 20.Bc6 gh2 (20...Qc6 21.bc6 ba5 22.Ra2 Rb2 23.Rb2 gh2 24.Kh1 Bc3 25.Rb8 Ke7 26.Rc8+–) 21.Kh1 Bh5 (21...Qc6 22.bc6 ba5 23.Qd2+–) 22.Bd7 Kd7 23.Qe1 Bg6 24.Rb1 Ne7 25.Ne2 Rbg8 26.Be5 de5 27.Rf2 (27.Qc3 Bh5 28.Rf2 Ng6+–) 27...f4 (27...Rh3 28.Qd2 Bh5 29.ab6 ab6 30.d4+–) 28.e4 (28.ef4 Bh5 29.ab6 Nf5 30.ba7 Be2 31.Re2 Ng3 32.Qg3 Rg3 33.Rh2 Ra8+–) 28...Bh5 29.Rh2 Bf3 0–1. kannisogoet – jarekl, playok.com, 2012.

4.e3 h5 5.Bd3 Bg7 (5...Rh6 6.Qc2 e6 7.h4+=) 6.Bg6+– Kf8 7.Bh5 Bf5 (7...e5 8.e4+–) 8.Nc3 (8.Bf3!? c6+–) 8...Nc6 9.g4 (9.a3 Ne5 10.Be2 Nd3 11.Bd3 Bd3+–) 9...Be6? (9...Nb4!? 10.gf5 Nd3 11.Ke2 Nb2=) 10.Nf3 (10.b5 Ne5 11.d3 Nh6+–) 10...Nb4 11.Nd4 Threatening mate: Nxe6 11...Nd3 12.Ke2 Nb2?? (better 12...Bc4 13.Qa4 Nb4 14.d3 c5 15.dc4 cd4 16.Qb4 dc3 17.Qc3 Rc8+=) 13.Ne6 1–0. MARYMARY – antibius, ChessWorld.net, 2016.

3.c4 Bg7

4.b5 h5 5.Nf3 a6 (5...e5 6.d4=) 6.Ng5 fg5 (6...e5!? 7.Nf3 ab5 8.cb5 d5+–) 7.Bg7+– Rh7 8.Bb2 Nf6 9.e3 ab5 10.cb5 d6 11.a4 (11.Bd3 Rh6+–) 11...Bf5 (11...e5 12.Qc2+–) 12.Be2 Nbd7 13.Bh5?? (better 13.0–0+–) 13...Nh5 (13...Rh5 14.f3 g4 15.e4–+) 14.g4 (better 14.Qf3 e6 15.g4 Bb1 16.Qb7–/+) 14...Bg4?? (better 14...Be4 15.0–0 Nhf6–+) 15.Qg4+– e5 16.h4 gh4? (16...Nc5 17.hg5 Ng3 18.Rh7 Nd3 19.Kd1 Nf2 20.Kc2 Ng4 21.Rh8 Kf7 22.Rd8 Rd8 23.Nc3+–) 17.Rh4 (better 17.Qg6 Rf7 18.Qh5+–) 17...Ndf6+– 18.Qg6 Rf7? (better 18...Ke7!?+–) 19.Rh5 (19.d4 e4+–) 19...Nh5 20.Qh5 Qf6 21.Qh2 0–0–0 22.f4 (better 22.d4 Rh8 23.Qg2+–) 22...ef4?? (better 22...Qg6 23.Qh3 Kb8+–) 23.Bf6+– Rf6 24.Nc3 (24.ef4 Rdf8+–) 24...Re8 (24...fe3 25.b6 ed2 26.Kd2 cb6 27.Qh4+–) 25.0–0–0 (25.b6!? cb6 26.Nd5 Rf7+–) 25...fe3 26.de3 Re3 (26...b6+–) 27.Qh8 Kd7 28.Qf6 Rc3 29.Qc3 (29.Qc3 c6 30.Qg7 Ke6 31.Qg6 Kd7 32.Qd6 Ke8 33.Qc7 cb5 34.Rd8) 1–0. RichardSommer (2015) – mauro1235 (2125), lichess.org, 2020.

4.Nc3 e6 5.d4 d6 6.Nf3 Ne7 7.g3 (7.e3 g4 8.Nd2 f5+=) 7...Ng6 8.Bg2 0–0 9.0–0 Qe7 10.e4 g4 11.Nd2 h5 (11...Nc6 12.Nb3 Nb4 13.Qg4=) 12.d5 e5 13.a4 b6 (13...a5 14.b5=) 14.Qb3 Kh8 15.a5 Nd7 16.ab6 cb6 17.Nb5 a6 18.Rfc1 (18.Nc7 Ra7 19.Ne6 Rg8+–) 18...Bb7 (18...Bh6 19.Rd1+/–) 19.Nc3 (19.Nc7 Ra7+–) 19...Rfc8 (19...Bh6 20.Ncb1+=) 20.Qd1 Bh6 21.Ne2 b5 (better is 21...Rc7!?+=) 22.cb5+– ab5 23.Ra8 Ra8 24.Rc2 Nb6 25.Qc1 (25.Nc3 Qd7+/–) 25...Na4 26.Rc7 Bd2 27.Qd2?? (better is 27.Qc2 Rc8 28.Rc8 Bc8 29.Qc8 Qf8 30.Qf5+/–) 27...Qc7–+ 28.Qh6 Qh7 29.Qh7 Kh7 30.Bc1 Rc8 31.Be3 Rc2 32.Nc1 Nc3 33.Nb3 Nd1 (better is 33...Rb2!? 34.Nd2–+) 34.Na5 Ne3 35.Nb7 (35.fe3 Ba6 36.Nc6–+) 35...Rc1 36.Bf1 Rf1 0–1. kannisogoet – irlpener, playok.com, 2012.

4.e3 h5 5.Nf3 g4 6.Nh4 d6 7.Be2 Rh6 8.f3 e5 9.Nf5 Rg6 10.Ng7 Rg7 11.fg4 hg4 12.0–0 f5 13.Nc3 c6 14.b5 Nh6 15.h3 gh3 16.Bh5 Kf8 17.Rf2 Ng4 18.Bg4 Rg4 19.Ne2 Rg2 20.Rg2 hg2 21.Kg2 Qg5 22.Ng3 f4 23.ef4 ef4 24.Qf3 Bg4 25.Qf2 f3 26.Kf1 Nd7 27.Ne4 Qf4 28.d3 Re8 29.Re1 d5 30.cd5 cd5 31.Nd2 Bh3 32.Kg1 Qg4 33.Kh2 Re1 34.Qe1 Qg2 0–1. axtur777 – Kramolnik, lichess.org, 2020.

3.e3 c6

4.c4 b5 5.cb5 Kf7 6.Bc4 Ke8 7.a4 Bg7 8.Nf3 cb5 9.ab5 Qb6 10.0–0 1–0. axtur777 – Edd2392, lichess.org, 2019.

4.Qh5 1–0. Trkn – Dennis, itsyourturn.com, 2000.

3.e3 Nc6??

4.b5 Na5 5.a4 (5.Qh5) 5...b6?? (5...Nh6!?+=) 6.Qf3 (6.Qh5) 6...c6?? (6...d5 7.Qh5 Kd7 8.Nh3+/–) 7.Bc3 e5 8.Ba5 ba5 9.bc6 Rb8 10.Bc4 dc6 11.Qc6 Bd7 12.Qa6 Ra8 13.Ne2 Ba4?? 14.Bg8 Rg8 15.Qe6 Qe7 16.Qg8 Rd8 17.Ra4 Qd7 18.Ra5 Rb8 19.0–0 Qb7 20.Qe6 Be7 21.Nec3 Rd8 22.Qg8 Bf8 23.Rb5 Qd7 24.Rd5 Qc6 25.Rd8 Kd8 26.Qf8 Kc7 27.Qf7 Kb6 28.Qh7 Qc7 29.Nd5 (29...Kb7 30.Qc7 Ka6 31.Nbc3 f5 32.Ra1) 1–0. Seimi Agus Eion – crystal palace, ChessWorld.net, 2005.

4.b5 Ne5 5.d4 Nf7 6.h4 h6 7.hg5 hg5 8.Rh8 Nh8 9.Qh5 Nf7 10.Qg6 Ngh6 11.Be2 b6 12.Bh5 Bb7 13.Nf3 d6 14.Nbd2 Bf3 15.Nf3 Qd7 16.Nh2 Qb5 17.Bc3 Qf5 18.Qf5 Nf5 19.e4 Ng7 20.Bg6 Ne6 21.g3 Bh6 22.e5 Kf8 23.ef6 ef6 24.d5 Nc5 25.Bf6 Re8 26.Kf1 Nd7 27.Bd4 Nde5 28.Bh5 Re7 29.Kg2 Nc4 30.Ng4 Re4 31.Nh6 Nh6 32.Bc3 Re2 33.Be2 1–0. JulienR26 (1710) – JUANKARODA (1750), lichess.org, 2020.

4.b5 Nh6 5.bc6 bc6 6.Qh5 Nf7 +–.

4.Qh5 1–0. Pierre – Virgil, internet, 2019.

3.e3 d5

4.Bb5 c6+= 5.Qh5 Kd7 6.Bd3 h6 (6...e5 7.b5=) 7.c4 (7.Nf3 Bg7 8.Nh4 Qe8 9.Qe8 Ke8+–) 7...Kc7 8.cd5 (8.Nf3 dc4 9.Bc4 Qd6+–) 8...Qd5 9.Bf1 Na6 (better 9...e5!?=) 10.Nc3+– Qd6 11.b5 Nb4 12.bc6 (12.Rc1 e5 13.bc6+–) 12...Nc2?? (better 12...bc6 13.Rc1 Nd3 14.Bd3 Qd3+=) 13.Kd1+– Na1 (13...Ne3 14.fe3 bc6+–) 14.Nb5 Kb8 (14...Kc6 15.Qf3 Kd7 16.Nd6 Kd6 17.Ba1 h5+–) 15.Nd6 ed6 16.cb7 (16.Qf7 Be7 17.cb7 Kb7 18.Ba1 Kc7+–) 16...Bb7 (16...Kb7 17.Qf7 Ne7 18.Bf6+–) 17.Ba1 (17.Qf7 Be7 18.Qg7 Bd5+–) 17...Be7 (17...Rh7 18.Qe8 Kc7 19.Qe6+–) 18.Qe8 (18.Qf7 Kc7+–) 18...Bc8 (18...Kc7 19.Qf7 Be4 20.Bf6+–) 19.Ba6 (better 19.Qg6 h5 20.Qg7 Be6 21.Qh8 h4+–) 19...Kc7 20.Bb5 (better 20.Bc8 Rc8 21.Qf7+–) 20...a6?? (better 20...Bg4 21.Nf3 Re8 22.Be8 a6+–) 21.Qc6+– Kd8 22.Qa8 (22.Qb6) 22...ab5+– 23.Qa5 Ke8 24.Qb5 Bd7 25.Qb8 Bd8 (25...Kf7 26.Qa7 Bc6 27.f3+–) 26.Qd6 Be7 27.Qb8 Bd8 (27...Kf7 28.h4 g4 29.f3+–) 28.Nf3 (28.h4 g4+–) 28...Rh7 29.Ke2 (29.Nd4 Rg7+–) 29...Re7 (29...Be6 30.h4 g4 31.Qb5 Bd7 32.Qh5 Kf8 33.Nd4+–) 30.Bd4 Kf7 (30...Re6 31.Rb1 Rc6 32.Rb7+–) 31.Qd8 Bb5 32.d3 Rd7 33.Qe8! (33.Qe8 Ke8 34.Rb1+–) 1–0. GuestTRBM – Guestyyyyyyyy, freechess.org, 2017.

4.c4 dc4 5.Bc4 Bf5 6.Nf3 Bb1 (better is 6...e5!?+=) 7.Rb1+– Nd7?? (better is 7...g4 8.Nd4 e5 9.Qg4 ed4 10.Bg8 Nc6 11.Qh5 Kd7+–) 8.Nd4 (better is 8.Ng5 Ne5 9.Be5 fg5 10.Qh5 Kd7 11.Rb3+–) 8...Bh6 (8...Ne5 9.Ne6 Qc8 10.Be5 fe5 11.Qh5 Kd7 12.Ng5 Nf6 13.Be6 Kd6+–) 9.Qh5 Kf8 10.Qf7# (10.Ne6#) 1–0. Valpa – Idris, playchess.de, 2005.

4.Nf3 g4 5.Nh4=.

4.Qh5 Kd7 5.c4 dc4+= 6.Bc4 c6 (6...e5 7.a3+=) 7.h4 (better 7.Nf3 Nh6 8.Ng5+–) 7...Qe8?? (7...gh4 8.Nf3 h3 9.Ne5 fe5 10.Qf5 e6 11.Qe6 Kc7 12.Qe5 Bd6 13.Qh8 hg2 14.Qg7 Nd7 15.Qg2 Ngf6+–) 8.Be6!!+– Ke6 (8...Kd8 9.Qe8 Ke8 10.Bc8 a5+–) 9.Qe8 Nd7 10.hg5 fg5 (10...Kd6+–) 11.Bh8 Ngf6 12.Bf6 Nf6 13.Qf8 Nd7 14.Qg8 Kf6 15.Rh6 Kf5 (15...Ke5 16.Qe6) 16.Qe6 1–0. GuestWMQY – GuestCPPR, freechess.org, 2018.

4.Qh5 Kd7 5.h4 e6 6.hg5 Qe7 7.Nf3 +–.

4.Qh5+/– Kd7 5.h4 Qe8 6.hg5 Qh5 7.Rh5 a6 (7...c6 8.c4+–) 8.g6! h6 (8...hg6 9.Rd5 Discovered attack (9.Rh8 Pinning; 9.Rh8 Deflection)) 9.Rd5 Ke6?? (9...Ke8+–) 10.Rd8 Bd7 (10...Nc6 11.Rf8 Nb4 12.Bc4 Kf5 13.g7+–) 11.Rf8 Kf5 (11...Bb5 12.Bb5 ab5+–) 12.Bd3 Kg5 13.f4 Kh5 14.Nc3 (better is 14.g7 Rh7 15.Bh7 b5+–) 14...f5 15.Nd5 Be6 16.Nc7 1–0. Schlaeger,Michael (2270) – Heineccius,August (1605), remoteschach.de, 2009.

4.Qh5 Kd7 5.h4 gh4 6.Qd5 Ke8 7.Qh5 Kd7 8.Rh4 Nh6?? 9.Rd4 Kc6 10.Qc5# 1–0. orane – Men64, caissa.com, 2006.

3.e3 e5

4.a3 d5 5.Qh5 Ke7 6.b5 (better is 6.h4!?+/–) 6...Bf5 7.a4 Bg6 8.Qg4 Qd6?? (better is 8...Bc2 9.d4 Qd7=) 9.Ba3+– (9.Ba3 Qa3 10.Na3+–) 1–0. nakpim – yuan2002, kurnik, 2012.

4.Bd3 d5 5.Qh5 Ke7 6.Bh7 Qe8 7.Qe8 Ke8 8.Bg6 Ke7 9.a4 1–0. aleksandras19 – farugo, kurnik, 2013.

4.h4 Bb4? 5.hg5 h5 6.Rh5 Rh5 7.Qh5 Ke7 (7...Kf8 8.Nf3 Nc6 9.gf6 Qf6 10.Ne5 (10.Be5?! Ne5 11.Ne5 d5+–) 10...Ne5 11.Be5+– (11.Qe5?! Qe5 12.Be5 d6+–)) 8.Qh7 (better is 8.a3 Bc5 9.gf6 Kf8+–) 8...Ke6 (8...Kf8 9.Nf3 Qe7 10.Qh5+–) 9.Nc3 fg5 (9...Bc3 10.dc3 b5+–) 10.Bc4 d5 11.Nd5 Nc6 (11...Kd6 12.Qd3 e4 13.Qe4 Be6+–) 12.Nc3 Kd6 13.Ne4 1–0. _chess_ (1895) – lady, gameknot.com, 2011.

4.h4 g4 5.Qg4 Qe7 +–.

4.Qh5+– Ke7

5.Ba3 Bg7 6.b5 d6 7.c4 b6 (7...Nh6 8.Be2=) 8.Nf3 (8.Qf3 c6 9.bc6 Qc7+/–) 8...Bb7 (8...Nh6!? 9.h3 Bf5=) 9.d4 Nd7 10.de5 Ne5 11.Ne5 fe5 12.Qg5?? (better is 12.Nc3+=) 12...Bf6–+ 13.Qf5 Nh6?? (better is 13...e4 14.Nd2 Ba1 15.Ne4 Qf8 16.Qf8 Kf8–+) 14.Qd3?? (14.Qc2 Kd7+/–) 14...Qg8 (better is 14...e4 15.Qc2 Ba1–+) 15.e4+/– Qg6 16.Nd2 Nf7 17.Rd1 Ng5 18.f3 h5 19.Rc1 h4 20.Kd1 h3 21.gh3 (21.g3!?+/–) 21...Nh3= 22.Bh3 Rh3 23.Kc2 Qg2 24.Rcg1 Qf2 25.Kc3 Qd4 26.Qd4+= ed4 27.Kc2 Rah8 28.Rg2 R8h4 29.Nf1?? Be4 30.fe4 Ra3 31.Ng3?? d3?? 32.Kb1 Bd4?? 33.Nf5+– Ke6 34.Nd4 Kd7 35.Nc6 Re4 36.Rg7 Ke6 (36...Ke6 37.Re7 Kf5 38.Rf1 Kg5 39.Re4 Ra4+–) 0–1. riditko – mariana12, kurnik, 2012.

5.d4 d6 6.de5 de5 7.c4 Nc6 8.Ba3 Ke6 9.Qh3 (9.c5!? Nh6 10.b5+/–) 9...f5 10.e4 Kf6 11.ef5 Bf5 (worse is 11...Nb4 12.Qc3 Qd6 13.g4=) 12.Qf3?? (12.Qc3!? Qd4 13.Nf3 Qc3 14.Nc3 Bb4 15.Bb4 Nb4 16.0–0–0–/+) 12...Nb4 (better is 12...Nd4 13.Qc3 Nc2 14.Ke2 Na1–+) 13.g4?? (better is 13.Bb4 Bb4 14.Nc3–+) 13...Nc2 14.Ke2 Nd4 15.Ke3 Nf3 16.Bf8 Qf8 17.gf5 Ng1 18.Rg1 Kf5 19.Bh3 Kf6 20.Nc3 Qc5 21.Kd3 Rd8 22.Kc2 Qc4 23.Rg4 Qd3 24.Kb3 Qh3 25.Rg3 Qh2 26.Ne4 Kf5 27.f3 Rd3 28.Kc4 Rd4 29.Kc5 Qc2 (29...Qc2 30.Kb5 c6 31.Ka5 Qa4#) 0–1. nakpim – ro1mi, kurnik, 2012.

5.d4 Qe8 6.Qd1 d6 7.de5 fe5 8.Nf3 h6 9.c4 Rh7 10.Bd3 Rg7 11.Nbd2 Nf6 12.c5 e4 13.Ne4 Ne4 14.Be4 Bg4 15.cd6 cd6 16.Bb7 Nd7 17.Bc6 Rb8 18.b5 a5 19.a4 Qg6 20.–0 Rf7 21.Ba3 Kd8 22.Bd7 Rd7 23.Qd4 Bg7 24.Qg4 Ba1 25.Ra1 Qf6 26.Rd1 Rb6 27.Nd4 Rg7 28.Nc6 Ke8 29.Qc8 Kf7 30.Qc7 Kg6 31.Qb6 Rf7 32.f3 g4 33.f4 h5 34.Qd4 Qf5 35.Qd3 d5 36.Qf5 Rf5 37.Nd4 Rf8 38.Kf2 Re8 39.f5 Kg5 40.g3 h4 41.b6 hg3 42.hg3 Rh8 43.Ne6 Kf5 44.Nf4 Rh2 45.Ng2 Ke5 46.b7 Rh8 47.Rb1 Rb8 48.Bb2 Kd6 49.Bd4 Kc6 50.Nf4 Rb7 51.Rb7 Kb7 52.Nd5 Kc6 53.Nf4 Kd6 54.Ke2 Ke7 55.e4 Kf7 56.e5 Ke7 57.e6 Kd6 58.Ke3 Ke7 59.Ke4 Kd6 60.Kf5 Ke7 61.Bc5 Ke8 62.Kf6 Kd8 63.Kf7 Kc7 64.e7 Kc6 65.e8Q Kb7 66.Qb5 1–0. ejdrzej – spaski2, kurnik, 2013.

5.h4 d5 6.hg5 d4? 7.gf6 Nf6 8.Qe5 Be6 9.Bc4 Qd6 10.Qd6 cd6 11.Be6 Ke6 12.Bd4 Nc6 13.Bc3 a5 (13...Bg7 14.Ne2+–) 14.b5 Nd8 (14...Nb4 15.Bb4 ab4 16.Nf3+–) 15.Nf3 d5 (15...Nf7 16.Nd4 Ke7 17.e4+–) 16.Bf6 Kf6 17.Nc3 Bg7 (17...Ke6 18.Rh5+–) 1–0. Wall,Bill – Francisco, Internet, 2003.

5.h4 Nc6

6.b5 Nb8 7.hg5 d6 +–.

6.hg5 Nb4 7.Na3 d5 +–.

6.hg5 Nb4 7.Na3 d6 +–.

6.hg5 d6 7.Bc4 Qe8 8.Qh4 Bg7 +–.

5.h4 g4

6.Be5! Nc6 7.Bc3 a5 8.Qg4?! d5 9.Qf3 ab4 +/–.

6.Be5! fe5 7.Qe5.

3.e3 e6

4.b5 d6 5.Qh5 Ke7 6.c4 Bh6 7.a4 g4 8.Qg4 e5 9.Qg3 a5 10.d4 1–0. jura1946 – juxtras, kurnik, 2014.

4.Qh5+/– Ke7 5.Bc4 (5.Nf3 Qe8 6.Qe8 Ke8 7.Ng5 Bb4+/–) 5...h6 (5...d5 6.Bd3+=) 6.Nf3 (6.Nf3 d5 7.Bb5+=; 6.h4 d5 7.Bb3 Bg7+=). Trkn – rota hoe, itsyourturn.com, 2000.

3.e3 Bg7

4.b5 Nh6!?+=.

4.Bc4 d5 5.Bb3 e6 6.Ne2 Ne7 7.0–0 b6 8.a3 Nd7 9.Ng3 0–0 10.Qh5 c5 11.bc5 Nc5 12.f4 Nb3 13.cb3 gf4 14.Rf4 Ng6 15.Rg4 e5 16.Nf5 Qd7 17.Rg6 hg6 18.Nh6 Bh6 19.Qh6 Qf5 20.Nc3 Bb7 21.Rf1 Qh5 22.Qh5 gh5 23.Nb5 Kg7 24.Nc7 Ba6 25.Rf2 Rac8 26.Na6 Rc2 27.Bc3 Kg6 28.Rf1 Rd8 29.Nb4 Rc3 30.dc3 d4 31.ed4 ed4 32.Nc6 Rd7 33.Nd4 a6 34.Rf3 b5 35.h3 Rd5 36.Kf2 a5 37.g4 hg4 38.hg4 b4 39.ab4 ab4 40.Nf5 Rd2 41.Ke3 bc3 42.Nd4 Rb2 43.Kd3 c2 44.Nc2 Rb3 45.Ke2 Rf3 46.Kf3 Kg5 47.Nd4 Kg6 48.Kf4 Kf7 49.Kf5 Kg7 50.Nc6 Kf7 51.Nb4 Kg7 52.Nd5 Kf7 53.Nf6 Kg7 54.g5 Kf7 55.g6 Kg7 56.Nh5 Kg8 57.Kf6 Kh8 58.Kf7 ½–½. Abdullaevich (1715) – levan333 (1615), lichess.org, 2015.

4.d4 Nc6 5.b5 Nb4? (better is 5...Nb8+/–) 6.c4+– e5 7.a3 ed4 8.Bd4 d5 (8...Nc6 9.Qh5 Kf8 10.bc6 dc6 11.Bc5 Ne7 12.Nc3+–) 9.ab4 dc4 10.Bc4 Bf5 11.Nc3 Qd6 12.Qb3 (worse is 12.Ra7 Ra7 13.Ba7 Qb4+–) 12...0–0–0 (12...Nh6+–) 13.Ra7 Nh6 14.Bd5 b6 (14...Kd7 15.Bc5 Bc2 16.Qc2 Qe5 17.Bb7 g4+–) 15.Bc6 Bd7 (15...Qc6 16.bc6 Kb8 17.Qa4 Rd4 18.Ra8) 16.Ra8 1–0. b4_player – story, casual, 2013.

4.h4 gh4 5.Rh4 d6 6.g3 Be6 7.Nf3 Bf7 8.g4 Nd7 9.g5 e5 10.gf6 Bf6 11.Rh1 Qe7 12.Be2 0–0–0 13.Nc3 h5 14.Ne4 h4 15.d4 Rh6 16.Nf6 Ndf6 17.Qc1 Ne4 18.de5 d5 19.a3 h3 20.Bd3 Bh5 21.Nd2 Nd2 22.Qd2 Bf3 23.Rh2 Bg2 24.0–0–0 Qe6 25.f4 Ne7 26.c3 Nf5 27.Re1 Nh4 28.Qc2 Kb8 29.Rg1 Nf3 30.Rhg2 Ng1 31.Rg1 h2 32.Rh1 Rg8 33.Qd1 Qh3 34.Qe1 Rg3 35.e4 Rd3 36.ed5 Rd5 37.e6 Re6 38.Qf2 Red6 39.Rh2 Rd1 40.Kc2 Qf5 41.Kb3 Qd5 42.Kc2 b6 43.Qg2 Qf5 44.Kb3 c6 45.Rh8 Kb7 46.Rg8 R1d2 0–1. Adamkosh (1845) – Like_That_Eh (1765), lichess.org, 2019.

4.Qh5 Kf8

5.Bc4 d5 6.Bb3+=.

5.Bc4 e6 6.Ba3 d6 7.Nc3 Qe8 8.Qf3 Nc6 9.h4?? (better 9.d4+=) 9...Ne5–/+ 10.Qe4 (better 10.Qe2 Qc6 11.Bd3 Nd3 12.cd3 Qg2 13.Qf3 Qf3 14.Nf3–+) 10...Nc4?? (better 10...f5 11.Qd4 Nf3 12.Nf3 Bd4 13.Nd4 e5–+) 11.Qc4+= Qf7 (11...Qe7 12.hg5 fg5 13.Nf3+=) 12.hg5 (12.Nb5 Bd7 13.Nc7 Rc8+–) 12...fg5+= 13.Rh3 (13.Bb2 e5 14.Qf7 Kf7=) 13...d5 (13...Nf6 14.Rh1=) 14.b5 (14.Qd3 Nf6=) 14...Ke8=+ 15.Qa4 Bd7 16.Nf3 (16.Nge2 e5 17.Rg3 Qh5=) 16...g4=+ 17.Ng5? (better 17.Qg4 e5 18.Qg3 Bh3 19.Nd5 Bg2 20.Ne5 Be5 21.Qe5 Kd8 22.Nf4=) 17...Qg6 (17...Qf5 18.Rg3 Bc3 19.dc3 Qg5 20.Rg4–+) 18.Qg4 Bf6?? (18...h6 19.Qb4 Qg5 20.Rg3–/+) 19.f4? (19.Qh5!? Qh5 20.Rh5=) 19...e5 (better 19...h6–+) 20.Nd5?? (better 20.Qe2 Bh3 21.gh3–/+) 20...Bg4–+ 21.Nc7 (21.Rg3 Rd8 22.Nc7 Kd7 23.Rg4 Qh5–+ (23...Kc7?! 24.Ne6 Kb6 25.Rg6 hg6 26.fe5 Be5 27.Bc5 Kb5 28.Rb1 Ka6 29.Rb7 Rh1 30.Ke2 Rd2 31.Kd2 Kb7 32.Nd8 Ka6 33.Nc6–+)) 21...Kd7 22.e4 (22.Na8 ef4 23.ef4 Bh3 24.0–0–0–+) 22...Bh3 23.Nh3 Qe4 24.Kf2 Kc7 25.Rc1 Bh4 26.g3 Bg3! 27.Kg1 (27.Kg3 Nf6 Combination) 27…ef4 0–1. Agiant – pgiridhar, lichess.org, 2020.

5.Bc4 e6 6.Qd1 d5+= 7.Bb3 Bd7 8.a4 a5 9.b5 c5 10.Nf3 (10.Ba3 b6+–) 10...Qe7 (10...g4!? 11.Ng1 c4+=) 11.0–0 f5 (11...Ke8 12.c4+–) 12.Ne5 Be5 (12...Nh6 13.d4+–) 13.Be5+– Nf6 14.Bb2 (better 14.c4+–) 14...c4?? (better 14...Kg7+–) 15.Ba3+– Qa3 16.Ra3 cb3 17.Rb3 Ne4 18.d3 Nc5 19.Qh5 (better 19.Ra3!? Kg7+–) 19...Nb3 20.cb3 h6 (20...g4 21.Qh6 Ke8 22.e4 de4 23.de4+–) 21.Qg6 Ke7 (21...Rg8 22.Qh6 Ke8 23.Qh5 Ke7 24.Qh7 Kf8+–) 22.Qg7 Kd6 23.Qh8 (23.Qh8 Ke7 24.Qh7 Ke8 25.f3+–) 1–0. GuestKJQG – xxmostwantedxx, freechess.org, 2017.

5.Bc4 e6 6.Ne2 d5+= 7.Bb3 Ne7 (7...Ke7 8.0–0+–) 8.f4 gf4 9.Nf4 Qe8 10.Qe2 (10.0–0+–) 10...e5 (better 10...a5!? 11.ba5 Rg8+–) 11.Nd5+– Nd5 12.Bd5 c6 13.Bb3 (13.Bc4 Qg6+–) 13...b6 (13...Qg6 14.0–0 Ke8 15.Qf2+–) 14.0–0 Ba6 (14...Ke7 15.e4+–) 15.d3 (better 15.c4+–) 15...c5? (15...Ke7 16.a4+–) 16.Rf5 (16.bc5 bc5 17.Qf3 Nc6+–) 16...cb4 (16...Ke7 17.bc5 bc5 18.Qf3+–) 17.Be5 Bc8 (17...Ke7 18.Qf3 Nc6 19.Bf6 Bf6 20.Rf6 Nd8+–) 18.Bd6 Qe7 19.Be7 (19.Qh5 Be6 20.Be6 Qd6 21.Qf7) 19...Ke7+– 20.Rd5 (better 20.Qg4 Bh6 21.Qe4 Kd8+–) 20...f5 (20...Be6 21.Qf3 f5 22.d4+–) 21.Qh5 Ba1 (21...Bf6+–) 22.Qf7 (better 22.Qg5 Bf6 23.Re5 Kd6 24.Qf6 Kc7 25.Re7 Bd7 26.Qh8+–) 22...Kf7–+ 23.Rd8 (23.Rf5 Ke8 24.Rf7 Nc6–+) 23...Kg7 (better 23...Be6 24.Rh8 Bh8–+) 24.Rd6 (24.Rh8 Kh8 25.Bd5–+) 24...Be5 (24...Be5 25.Rd5 Re8–+) 0–1. GuestKDZJ – GuestYVJBtz, freechess.org, 2017.

5.Bc4 Qe8 6.Qd1 e6 7.Nf3 d5 8.Bb3 Qe7 9.b5 Bd7?? (Better is 9...Qd7+/–) 10.Ba3+– Bb5 11.Be7 Ne7 12.d3 (12.h4 g4 13.Nd4 Bd7+–) 12...Bc6 13.0–0 f5 14.Nd4 Bd7 15.c3 c5 16.Nf3 h6 17.d4 c4 18.Ba4 Nbc6 19.Na3 a6 20.Bc2 Kf7 21.Ne5 Ne5 22.de5 Be5 23.f4 gf4 24.ef4 Bc3 25.Qh5 Ng6 26.Nb1 Ba1–+ 27.Nd2 Bf6 28.Nf3 Bc6 29.Ne5 Be5 30.fe5 Kg7 31.Qe2 Raf8 32.Qd2 b5 33.Qa5 d4?? 34.Qa6?? Bd5 35.Qb5 d3–+ 36.Ba4 Ne5 37.Qa6?? d2 38.Qb6 c3 39.Qd4–/+ Kf6 40.Qc3 Rc8 41.Qd2+= Rhg8 42.Qd4?? Rg2–+ 43.Kh1 Rd2 44.Kg1 Rg2 45.Kh1–+ Re2 46.Kg1 –+. stoker – jones662, Live Game Caissa's Web, 2004.

5.h4 Qe8 6.Qe8 Ke8 7.hg5 Kf8 8.gf6 Nf6 9.Nc3 d6 10.0–0–0 e5 (10...Nc6 11.b5 Ne5 12.Re1+–) 11.Bc4 a5 12.b5 (12.Nb5 ab4 13.f4 Ke7+–) 12...c6 (better 12...Nbd7+–) 13.Ba3 c5 (13...Ke7 14.Nf3 Nbd7 15.Rh4+–) 14.d4 ed4 (14...Nbd7 15.dc5 dc5 16.Nf3+–) 15.ed4 Nbd7 16.dc5 Nc5 (16...dc5 17.Na4 h5 18.Nc5 Bh6 19.Kb2 Kg7+–) 17.Rd6 Ng4 (17...Ke8 18.Bc5 Bf8 19.Rf6 Bc5+–) 18.Rd8 Ke7 19.Rh8 (19.Bc5?! Kd8 20.Bb6 Ke8+–) 19...Bh8 20.Rh7 Kf8 21.Bc5 (21.Bc5 Ke8 22.Rh8 Kd7 23.Ne4 b6 24.Rh7 Ke8 25.Nd6 Kf8 26.Nf5 Ke8 27.Re7 Kf8 28.Rf7 Kg8 29.Rd7 Kh8 30.Bd4 Ne5 31.Be5) 1–0. GuestQZKH – martinezro, freechess.org, 2019.

5.h4 h6 +/–.

3.e3 h5

4.a3 d5 5.c4+=.

4.Bd3 d5 5.Bg6 Kd7 6.h4 gh4 7.Rh4 +/–.

4.Bd3 Bg7 5.Bg6 Kf8 6.Bh5 Nc6 (6...f5 7.Bg7 Kg7 8.Be2+/–) 7.b5+– Ne5 8.Be5 (8.h4 gh4 9.Rh4 d5+–) 8...fe5+/– 9.Nc3 (9.Nh3 e6+/–) 9...d6 (9...Nf6 10.Be2+/–) 10.Rb1 (10.h4 gh4 11.Rh4+/–) 10...Bf5 (10...Nf6!? 11.Be2 e4+/–) 11.Qf3+– Nh6?? (better is 11...Nf6 12.Qf5 Rh5+–) 12.e4 (12.g4 d5 13.e4 e6+–) 12...e6 (12...g4 13.Bg4 Ng4 14.Qf5 Nf6+–) 13.ef5 Nf5 14.g4 Ke7 (14...Rh5 15.gh5 d5+–) 15.gf5 ef5 (15...Rf8 16.Qb7 Rf5 17.Nh3+–) 16.Qf5 Rf8 (16...Qg8 17.Bf3 Rf8 18.Qg5 Bf6 19.Qg8 Rfg8 20.Bb7 Rg7+–) 17.Nd5 1–0. ranaground – pieeater, ChessWorld.net, 2009.

4.Be2+/– a6?? 5.Bh5 Rh5 6.Qh5 1–0. marekt – Tricky.1, ChessWorld.net, 2005.

4.Be2 b6?? 5.Bh5 Rh5 6.Qh5# 1–0. marekt – DeadQueen, internet, 2005.

4.Be2 e6 5.Bh5 Ke7 6.d4 a5 7.d5 d6 8.e4 e5 9.Bf3 ab4 10.Qd3 g4 11.Be2 Bh6 12.f3 gf3 13.Bf3 Bd7 14.Ne2 Ra5 15.0–0 Bb5 16.Qb3 Be2 17.Be2 c5 18.Bg4 Qb6 19.Qg3 c4 20.Kh1 Qe3 21.Rf3 Qe4 22.Bf5 Qe2 23.Kg1 e4 24.Rf1 Rd5 25.Be4 Be3 26.Qe3 Qe3 27.Rf2 Rd1 White king mated 0–1. Crusader Rabbit (1710) – karlsdad, ChessWorld.net, 2014.

4.Be2 Nh6 +/–.

4.Nf3 d6 5.Ng5 Bh6 6.Qh5 Kd7 7.Nf7 Bg7 8.Nh8 Nh6 9.Ng6 Qg8 10.d4 Nc6 11.b5 Nb4 12.Na3 f5 13.c3 Nd5 14.Bd3 e6 15.0–0 Nf6 16.Qd1 Nhg4 17.h3 Qh7 18.Nf4 Nh6 19.Qb3 Qg8 20.c4 Ke8 21.c5 d5 22.Nc2 Nf7 23.a4 Ne4 24.Be4 fe4 25.Nb4 Bd7 26.c6 Bc8 27.cb7 Bb7 28.Rac1 Rc8 29.Nc6 Bh6 30.Ne6 Nd6 31.Qd5 Qf7 32.Nf4 Qd5 33.Nd5 Bf8 34.Nf6 Kf7 35.d5 Bg7 36.Na7 Bf6 37.Nc8 Bc8 38.Rc7 1–0. Orang4Utan (1660) – navaras50, lichess.org, 2017.

4.Nf3 e5!?=.

4.Nf3 Bg7 5.Bd3 d6 (5...e5!?+/–) 6.Ng5!+– fg5?? (better is 6...Rh6+–) 7.Bg7 Bg4 (7...Rh6 8.Bh6 Nh6 9.Bg6 Kd7 10.Qh5+–) 8.f3 (8.Bh8?! Bd1 9.Kd1 Kd7=) 8...Nc6 (8...Nf6 9.Bh8 Be6 10.h4 gh4 11.Rh4+–) 9.Bg6 (9.Bh8 Be6 10.b5 Nb4 11.Bg6 Kd7+–) 9...Kd7 10.fg4 (better is 10.Bh8 Be6 11.b5 Nb8+–) 10...h4 (10...Nf6 11.Bh8 Qh8 12.gh5 Rf8+–) 11.Bh8 Qf8 12.Qf3 Qd8 13.Bf5 e6 14.Nc3 ef5 15.Qf5 Ke8 16.Nd5 Qd7 17.Qg6 Kf8 18.0–0 Nf6 19.Rf6 Qf7 20.Qf7 1–0. TeaCzar – pieeater, ChessWorld.net, 2009.

4.Nf3 Bg7 5.Ng5! e5 (5...fg5 6.Bg7 Pinning (6.Bg7 Deflection)) 6.Nf3 Qe7 7.a3 b6 8.Be2 Bb7 9.0–0 Nc6 10.d4 ed4 11.Nd4 0–0–0 12.Bf3 Nh6 13.c4 Kb8 14.Nd2 Rhg8 15.Qa4 (15.Bd5 Rh8+–) 15...Ng4 16.h3 Ne3? (better is 16...Nge5!? 17.Bd5 Nd4 18.Bd4 Bd5 19.cd5 Qd6+/–) 17.Rfe1+– (17.Nc6 Bc6 (worse is 17...dc6 18.Rfe1 Qf7 19.Re3 Rd2 20.Bc3+=) 18.Bc6 A) 18...dc6?! 19.Rae1 Bh6 20.Qc6 (20.fe3 Rg2 21.Kg2 Rd2 22.Rf2 Qe4 23.Kg1 Be3 24.Bd4 Rf2 25.Qa7 Ka7 26.Bb6 cb6 27.Re3 Qg2) 20...Rd2 21.Bc1+=; B) 18...Nf1 19.Nf1 dc6 20.Qc6 Qe2–+) 17...Nd4 18.Re3?? (18.Bd4!? f5 19.fe3 Bd4 20.ed4 Qh4+–) 18...Qf7?? (better is 18...Nf3 19.Nf3 Qf7+=) 19.Bb7+– Nf5?? (19...Kb7 20.Bd4 f5 21.Bb6 ab6+/–) 20.Bd5 Qg6 21.Qa6 c6 22.Be4 Bh6 23.Rg3! Qf7 24.Bf5 Bd2 25.Rd1 Rg3 26.fg3 Be3 27.Kh2 h4 28.gh4 Bf4 29.Kh1 Bg3 30.b5 Qh5 31.Bg4 Qh4 32.Rd7 Rd7+– 33.Bd7 Qf4 34.Qc8 1–0. barborski (1655) – picus52, playok.com, 2012.

4.Be2 g4

5.Bg4?? hg4–+ 6.Qg4 Nh6 7.Qg6 Nf7 8.Ne2 d6 9.0–0 Rh6 (9...Nc6 10.b5 Nce5 11.Be5–+) 10.Qd3 Nc6 (10...a5 11.b5–+) 11.b5 Nce5 12.Qb3 Be6 (better 12...d5–+) 13.Qe6= Qd7?? (better 13...Ng5 14.Qd5 c6 15.bc6 bc6–/+) 14.Qd7+– Nd7 15.f4 0–0–0 (15...f5 16.Bd4+–) 16.Nd4 Rh5 17.Ne6 (17.Nc3 Re8+–) 17...Re8 18.a4 Nh6 (18...Nc5 19.Nc5 dc5 20.d3+–) 19.Bd4 b6 (19...Nf7 20.f5+–) 20.a5 Kb7 21.c4 Nc5 (21...Nf7 22.Nc3 Nd8 23.Nd8 Rd8 24.f5+–) 22.Bc5 dc5 23.Nc3 Nf5 (23...Nf7+–) 24.g4 Rh4 (24...Ne3 25.gh5 Nc4 26.ab6 ab6 27.Ra6+–) 25.gf5 Bh6 (25...Rg4 26.Kf2 Rh4 27.Rh1+–) 26.Nd5 Rg8 (26...Rh5 27.ab6 ab6 28.Ra6 Rg8 29.Kh1+–) 27.Kh1 Rg2 (27...Bf8 28.ab6 cb6 29.Nd8 Kc8 30.Ra7 Rh2 31.Kh2 Rh8 32.Kg1 Rg8 33.Kf2 Rg2 34.Kg2 Kd8 35.Ra8 Kd7 36.Rfa1 Bg7 37.R1a7 Kd6 38.Rd8) 28.Kg2 (28.Kg2 Bg7 29.ab6 cb6 30.Nd8 Kc8 31.Ra7 Kd8 32.Ra8 Kd7 33.Rfa1 Rg4 34.Kf3 Rf4 35.ef4 Bh6 36.R1a7 Kd6 37.Rd8) 1–0. DEFFM – GuestZTJT, freechess.org, 2019.

5.h3 d5 6.hg4 Bg4 7.Bg4 Qd6 8.Rh5 Rh5 9.Bh5 Kd8 10.Nf3 Nc6 11.Bf7 Bg7 12.Bg8 Kd7 13.b5 Ne5 14.Ne5 fe5 15.Bh7 Rh8 16.Bf5 e6 17.Bh3 e4 18.Qg4 Bb2 19.Nc3 Ba1 20.Qg7 Qe7 21.Qh8 Bc3 22.Qc3 b6 23.a4 Qh4 24.Qe5 Qe7 25.g4 Qa3 26.g5 Qc1 27.Ke2 Qc2 28.Qe6 Kd8 29.Qd5 Ke8 30.Qd7 Kf8 31.g6 Qc4 32.d3 ed3 33.Qd3 Qa2 34.Kf3 Kg7 35.Bf5 Qa4 36.Qd4 Kh6 37.Qa4 1–0. joseluisplaza1 (1795) – Adjailton (1830), lichess.org, 2020.

5.h3 d5 6.hg4 Bg4 7.Bg4 Bg7 8.Bh5 Rh5 9.Qh5 Kf8 10.Qg6 Nd7 11.Rh7 Ne5 12.Qg7 Ke8 13.Rh8 Kd7 14.Be5 fe5 15.Qe5 Kc6 16.a4 Qd6 17.b5 Kb6 18.Qd4 c5 19.a5 Kb5 20.Qa4 Ka6 21.Nc3 d4 22.Qb5 1–0. golik (1750) – Adjailton (1770), lichess.org, 2019.

5.h3 e5 6.hg4 Bb4 7.a3 Ba5 8.gh5+–.

5.h3 e5 6.hg4 h4 7.b5 d5 (7...Bg7 8.Nf3+–) 8.g5! Qe7 (8...fg5 9.Bh5 Double attack (9.Be5 Deflection)) 9.Bh5 (9.gf6 Nf6 10.Nf3 Nbd7+–) 9...Kd8 10.g6 (10.gf6 Nf6 11.Rh4 Bf5+–) 10...Bf5 11.c4 (11.Ba3 Qg7+=) 11...dc4 (11...Qd7!? 12.Nc3 d4+=) 12.Qf3 (12.Rh4?! Bg6 13.Qf3 e4=) 12...Bb1? (better 12...Bc8 13.Ba3 Qg7 14.Bf8 Qf8 15.Qd5 Nd7 16.Rh4 Ne7 17.Qc4 Rh6+–) 13.Qb7+– (13.Rb1?! c6+–) 13...Bd3 (13...Be4 14.Qe4 c6 15.Bf3+–) 14.Qa8 Rh5 15.Qb8 Kd7 16.Qa7 Qb4 17.Bc3 Qb5 18.Qa8 Rg5 (18...Qc6 19.Qf8 Qg2+–) 19.Qf8 Rg6 20.g3 e4 (20...hg3 21.Rh7 Kc6 22.Qe8 Kb6 23.Qb8 Ka6 24.Qc7 gf2 25.Kf2 Rg2 26.Kg2 Bh7 27.Qh7 Qb7 28.Qb7 Kb7+–) 21.Rh4 Ne7 22.Rh7 Qc5 23.Bf6 Rf6 24.Qf6 Qb4 (24...Qd6 25.Qd6 Kd6 26.a4+–) 25.Qf5 Kd8 26.Rh8 Ng8 27.Rg8 Ke7 28.Rg7 Kd8 (28...Kd6 29.Qf6 Kd5 30.Rg5) 29.Qd7 1–0. DEFFM – GuestTRSG, freechess.org, 2018.

3.e3 Nh6

4.c4 a6 5.Be2 Nc6 6.a3 d6 7.Bh5 Nf7 8.Bf7 Kf7 9.Ne2 Bg7 10.0–0 Re8 11.f4 Kg8 12.fg5 fg5 13.Nd4 (13.Bg7!? Kg7 14.d4+=) 13...Nd4= 14.Bd4 Bd4 15.ed4 e6 16.Qh5 Qe7 17.Nc3 Rf8? (17...Bd7 18.Ne4 Rf8 19.Nf6 Kh8 20.Qg5+/–) 18.Ne4 (18.Rf8 Qf8 19.Qg5 Qg7 20.Qd8 Qf8 21.Qc7 Qg7 22.Qd6 Bd7+–) 18...Rf1? (better is 18...Bd7+/–) 19.Rf1+– Qg7 (19...Bd7 20.Nf6 Kh8 21.Nd7 Qg7+–) 20.Nf6 (20.Qe8 Qf8 21.Qf8) 20...Kh8 (20...Qf6 21.Rf6 Bd7 22.Rf7 h6 23.Qg6 Kh8 24.Qg7) 21.Ne4 Qd4 22.Kh1+– Qe4?? 23.Qe8 Kg7 24.Rf7 Kh6 25.Qf8 Kh5= 26.Rf1?? Qg6?? 27.Qf3 g4–+ 28.Qe2 Bd7 29.h3 e5 30.hg4 Bg4 31.Qf2 Rg8 32.g3 Qe4 33.Kg1 Qc4 34.Qh2 Kg6 35.Qf2 Qe6 36.Qe3 h5 37.Qe4 Kg7 38.d4 d5 39.Qd3 e4 40.Qe3 Qh6 41.Qf2?? Qg6 42.Qf4 1–0. aniabielak – wern123, kurnik, 2012.

4.Bc4 d5 5.Bb3 c6 6.Nf3 g4 7.Nd4 Nf5 (better is 7...e5!? 8.Ne2 Bb4–/+) 8.Nf5 Bf5 9.a3 h6 10.c4 Rh7 11.Bc2 Qd7 12.Nc3 Na6?? (12...dc4 13.e4 Bg6 14.d3=) 13.c5 (better is 13.cd5 Bc2 14.Qc2+–) 13...h5 14.d4 g3? (better is 14...h4!?=) 15.hg3+/– Bg7 16.Rh5 Rh5?? 17.Qh5 Kd8 18.Qf5 Qf5 19.Bf5 e6 20.Be6 Ke7 21.Bh3 b5 22.0–0–0 Rh8 23.Ne2 f5 24.Nf4 Kf6 25.g4 Kg5 26.f3 1–0. mihai740609 – tranceonly, kurnik, 2011.

4.Bc4 e6 5.d4 (5.Qf3!? Be7 6.e4+=) 5...Bb4 6.c3 Be7 7.d5 Nf7 8.e4 d6 (8...c6 9.Nf3+=) 9.Bd3 (better is 9.de6 Ne5 10.Qh5 Ng6 11.Ne2+=) 9...Ne5+= 10.c4 Nd3 11.Qd3 ed5 12.cd5 c6 13.Nd2 Qb6 (13...Nd7 14.Rc1+=) 14.Bd4 c5 15.Be3 h6 16.Ngf3 Nd7 17.0–0 Ne5 18.Ne5 fe5 (worse is 18...de5 19.Rfc1+/–) 19.Nc4 Qd8 20.Bd2 Bd7 21.Qf3 Rf8 (better is 21...g4!? 22.Qe2 b5+=) 22.Qh5+= Rf7 23.Qh6 Bf8? (better is 23...Bb5 24.Rac1 Bc4 25.Rc4 b5+/–) 24.Nd6+– (24.Qg5?! Qg5 25.Bg5 b5+=) 24...Ke7 (24...Bd6 25.Qd6 g4+–) 25.Bg5 Rf6 26.Qf6 1–0. jura1946 – pilot5767, kurnik, 2012.

4.e4+=.

3.e4 d5

4.ed5 Qd5+= 5.Nc3 Qe5 6.Be2 Qd6 7.a3 Qc6?? (7...e5 8.d4 ed4 9.Ne4+/–) 8.Bf3 (better is 8.Bb5+–) 8...Qe6 9.Nge2 Nc6 10.0–0 Qe5 (10...Qd7!?+/–) 11.d4 Qd6 (11...Qf5 12.Bc6 bc6 13.Ng3+–) 12.Bh5 Kd8 13.Ne4 Qd7? 14.Nc5 Qd5 15.Bf3 Qf5?? 16.c4 Be6?? 17.Ne6 Qe6 18.d5 Qf7 19.dc6 Ke8 20.cb7 Rb8 21.Bc6 1–0. Arran – Seimi Agus Eion, ChessWorld.net, 2005.

4.Qh5+– Kd7

5.Nc3 d4 6.Nb5+–.

5.ed5 a5 6.Nf3 Na6 7.Bb5 c6 8.dc6 bc6 9.Ng5 Nb4 +–.

5.ed5 a5 6.Nf3 ab4 7.Qf7?? g4 (7...Nh6!? 8.Qe6 Ke8+/–) 8.Bb5+/– c6 9.dc6 (9.Nd4!? Kd6 10.Ne6 Be6 11.Qe6 Kc5 12.Be2 Qd5 13.Qg4+–) 9...bc6 10.Ne5 (better is 10.Ng5 Nh6 11.Qd5 Ke8 12.Bc6 Nc6 13.Qc6 Bd7 14.Qe4+=) 10...Kd6?? (better is 10...fe5 11.Be5 Nh6+= (11...cb5? 12.Bh8 Bb7 13.Qg8+–)) 11.Nc6?? (better is 11.Qc4 Be6 12.Qb4 Kc7 13.Bc4+–) 11...Nc6=+ 12.0–0 (12.Qc4 Qd7 13.0–0 Bb7 14.Bc6 Bc6–/+) 12...Nh6 (12...Be6!? 13.Qh5 Ra5–/+) 13.Qc4–/+ Ne5?? (better is 13...Bb7–/+) 14.Be5+– fe5 (14...Ke5 15.Re1 Kf5 16.Qe4 Kg5 17.Qa8 e5+–) 15.Qc6 1–0. 30qaz – kleanitt, Live Game Caissa's Web, 2004.

5.ed5 a5 6.Nf3 ab4 7.Ng5!? Qe8 8.Nf7 +–.

5.ed5 a6 6.Nf3 c6 7.Bc4 Kc7 (7...cd5 8.Bd5 e5 9.0–0+–) 8.Nc3 (8.Ng5 Nh6 9.Ne6 Be6 10.de6 Rg8+–) 8...Bf5 (8...Nh6 9.h3+–) 9.d3 (9.Nd4 Nh6+–) 9...Bg6 (9...Nh6 10.dc6 Bg4 11.Ng5 Nc6 12.Ne6 Be6 13.Be6+–) 10.Qg4 Qd6 (10...e5 11.de6 h5 12.Qd4 Qd4 13.Nd4+–) 11.dc6 h5? (11...Nc6 12.Ng5 Ne5 13.Ne6 Kb8 14.Qg3+–) 12.Qd4 Nc6 13.Qd6 ed6? 14.a3 Re8 15.Ne2 d5? 16.Bd5+– Rh7? 17.Bg8 Rhe7 18.Nfg1 Bh6 19.Bb3 f5 20.Kd1 f4 21.f3 g4 22.Nd4 Nd4 23.Bd4 Re1 24.Kd2 Ra1 25.Ba1 gf3 26.Nf3 h4 27.Re1 Re1 28.Ke1 h3 29.Kf2 Bf8 30.Be5 Bd6 31.Bd6 Kd6 32.gh3 b6 33.Bc4 b5 34.Bb3 Bf5 35.h4 Bg4 36.d4 Bf3 37.Kf3 a5 38.Kf4 ab4 39.ab4 (39...Kd7 40.Bc4+–) 1–0. Arran – Tricky.1, ChessWorld.net, 2005.

5.ed5 a6 6.Nf3 c6 7.Ng5!? Qe8 8.Nf7 Kc7 9.Be5 fe5 10.Qe5 Kb6 +–.

5.ed5 a6 6.Nf3 Qe8 7.Qe8 Ke8 8.Ng5 +–.

5.ed5 c6 +–.

5.ed5 e5 6.de6 Ke6 7.Bc4 Kd7 8.Qh3 Kc6 9.Qf3 Kd7 10.Ne2 +–.

5.ed5 h6 6.Bb5 (6.Nf3!? Qe8 7.Bb5 c6 8.Qe8 Ke8 9.dc6 bc6+–) 6...c6 7.dc6 (7...Nc6 8.h4+–) 1–0. ajeffries (1645) – scmorgan, net–chess.com, 2006.

5.h4 Kd6? 6.hg5 Bg7 (6...c6 7.Nc3 d4+–) 7.Qf7 Qf8 8.Qd5 1–0. DEFFM – GuestKZYK, freechess.org, 2019.

5.h4 de4 6.hg5 Nc6+–.

3.e4 e5

4.a3 a5 5.ba5 (5.Qh5 Ke7+/–) 5...Ra5 (5...Ne7 6.Bc4+=) 6.Nc3 (6.Qh5 Ke7+/–) 6...c5 (6...Ne7!?+=) 7.Nd5 (7.Qh5) 7...Nh6 (7...h5 8.Be2 g4 9.f3+/–) 8.Qf3 (better is 8.Qh5 Nf7 9.Bc4+–) 8...f5?? (better is 8...Be7+/–) 9.Be5+– c4 10.Bc4 g4 11.Qf4 Nc6 12.Nc7 Ke7 13.Qg5 1–0. erch – Izzy5150, ChessWorld.net, 2005.

4.a3 Na6? 5.Bc4 (5.Qh5 Ke7+–) 5...Nh6 6.d4 ed4 (6...d6 7.b5 Nb8 8.Qh5 Ke7 9.Qd1+/–) 7.Bd4 (better is 7.Qh5 Ke7 8.Bd4+–) 7...Nb4?? (better is 7...Qe7 8.Qh5 Kd8+/–) 8.Qh5+– Ke7 9.ab4 c6 (9...d5 10.Bc5 (10.ed5?! Bg4 11.Qg5 fg5 12.Bh8 Kf7=+) 10...Kd7 11.Bd5+–) 10.e5 (better is 10.Ba7 d6 11.Bb6+–) 10...Bg7 (10...d5 11.ed6 Kd6+–) 11.ef6 Bf6 12.Bf6 Kf6 13.Qh6 Kf5 14.Bd3 Kf4 (14...Ke5 15.Nf3 Kf4 16.Qd6 Kg4 17.h3 Kh5 18.g4) 15.g3 Kg4 (15...Ke5 16.Nf3 Kd5 17.Nc3) 16.h3 1–0. mickster the king – Izzy5150, ChessWorld.net, 2005.

4.a3 Ne7 5.Bc4+=.

4.Ba3 d5? (better 4...Ne7!?=) 5.Qh5+– Ke7? (better 5...Kd7 6.Qf7 Qe7 7.Qd5 Qd6+–) 6.b5+– Ke6 (6...Kd7 7.Qf7 Ne7 8.ed5 Qe8 9.Qf6 Ng6+–) 7.ed5 Kd5 (7...Kd7 8.Qf7 Ne7 9.Qf6 Rg8 10.Qe6 Ke8 11.Be7 Be6 12.Bd8 Bd5 13.Bc7 Rg7+–) 8.c4 (8.Qf7 Ke4 9.f3 Kf5 10.g4 Kf4 11.Qc4 Qd4 12.Nh3 Kf3 13.Qe2) 8...Ke6+= 9.Qh3 (9.Bf8 Qf8 10.h4 gh4+=) 9...f5 (9...Kf7 10.Qe3=) 10.c5 (10.Bf8 Qf8 11.Qe3 f4+–) 10...Qd4 Black is in command 11.Qb3 Kf6 12.Bb2 Qe4 13.Ne2 Bc5?? (better 13...Be6 14.Qa3 Nd7+=) 14.Nbc3+– Qh4 15.g3 (15.Nd5!? Kg6 16.g3 Qh6 17.Be5 Nf6 18.Bf6 Rf8+–) 15...Be6 16.Nd5 Bd5 17.Qd5 (17.gh4?! Bb3 18.hg5 Ke6 19.ab3 Ne7+=) 17...Qe4 18.Bg2 (better 18.Qc5 Nd7 19.Qc7 Qh1 20.Qd7+–) 18...Qd5=+ 19.Bd5 c6 20.Bc4 (20.Bg2 Bd6=+) 20...cb5–/+ 21.Bb5 a6 22.Bd3 (22.f4!? gf4 23.gf4=) 22...Nc6 23.0–0? (better 23.Rc1!? Bd6 24.Nc3–/+) 23...Nge7 (23...Rd8 24.Nc1–+) 24.Rac1 Bb4 (24...Rhd8 25.Rc5 Rd3 26.Rd1–+) 25.Nc3? (25.f4 gf4 26.gf4 Rhg8 27.Ng3=) 25...Rad8 26.a3? (26.Bc2 Rd2 27.Rfd1 Rhd8 28.Rd2 Rd2–+) 26...Rd3 (26...Ba3!? 27.Ba3 Rd3 28.Rc2–+) 27.ab4 Rd2 28.Ba3 b5 29.Rfe1 (29.Rfd1 Rhd8–+) 29...Rhd8 30.f3 (30.h3 R8d4 31.Ra1 R4d3–+) 30...Nd4 31.Rf1 Rd3 32.f4 (32.Kg2–+) 32...Rc3! 33.fe5 (33.Rc3 Decoy to c3 33...Ne2 A double attack) 33...Ke5 (better 33...Ke6 34.Rc3 Ne2 35.Kh1 Nc3–+) 34.Rfe1–/+ Kf6 35.Rc3 Nd5 36.Rd3 Nc2 37.Re2 (37.Red1 Ke5–/+) 37...Na3 38.Red2 Nc4 (38...Nc2! 39.Rc2 Nb4 40.Rd8 Nc2 41.Rd6 Ke5 42.Ra6 b4–/+) 39.Rd5=+ Nd2 (39...Re8!? 40.Ra2 Re1 41.Kf2 Re6=+) 40.Rd8= Nc4 (40...Ne4 41.Rh8=) 41.Ra8+= Ke5 42.Ra6 Kd4 43.Rh6 (43.Rf6 Ne3+–) 43...Kc3+= 44.Rh7 Kb4 45.Rh5 f4? (better 45...Nd2+=) 46.Rg5+– fg3 47.hg3 The passed pawn on g3 will quickly become a dangerous weapon (47.h4!? Nd6+–) 47...Ka4+– 48.Rf5 (48.Kf2 b4+–) 48...b4+= 49.Rf8 b3 50.g4 b2 51.Rb8 Ka3 52.g5 Ka2?? (better 52...Nd2 53.Rb2 Nf3 54.Kf2 Ng5+–) 53.g6+– Nd2 54.g7 Nb3 (54...b1Q 55.Rb1 Kb1+–) 55.Ra8 Kb1 56.g8Q Kc2 (56...Nd4 57.Qa2 Kc1 58.Qc4 Kd2 59.Qd4 Kc2 60.Rc8 Kb1 61.Qd3 Ka2 62.Ra8) 57.Qg2 (57.Qc4 Kd1 58.Qb3 Ke2 59.Re8 Kd2 60.Rd8 Ke2 61.Qd3 Ke1 62.Re8) 57...Nd2 (57...Kd3 58.Qd5 Nd4 59.Ra3 Kc2 60.Qc4 Kd2 61.Rd3 Ke1 62.Qc3 Ke2 63.Qd2) 58.Rc8 Kd1 (58...Kd3 59.Rd8 Kc3 60.Qd2 Kb3 61.Rd3 Ka2 62.Qa5 Kb1 63.Qa4 Kc1 64.Rd1) 59.Qg4 (59.Kf2 Nc4 60.Rc4 b1N 61.Qf3 Kd2 62.Qd5) 59...Ke1 60.Re8 (60.Qe6 Kd1 61.Kf2 Nc4 62.Rc4 b1Q 63.Qe2) 60...Ne4 61.Re4 Kd2 62.Qe2 Kc1 63.Qc4 Kd2 (63...Kd1 64.Qd3 Kc1 65.Re1) 64.Re2 Kd1 65.Qc2 1–0. Delboy Smith (1730) – Hookem (1780), ChessWorld.net, 2016.

4.b5 b6? 5.Qh5+– Ke7 6.Bc4 Qe8 7.Qe8 (better is 7.Ba3!? d6 8.Bd6 cd6 9.Qe8 Ke8 10.Bd5+–) 7...Ke8+/– 8.d4 d6 9.Bd5 c6 10.bc6 Ne7 11.c7 Nd5? (better is 11...Nbc6 12.Nc3 h5+/–) 12.cb8Q+– (12.ed5?! Na6 13.c4 Nc7=; 12.cb8R?! Rb8 13.ed5 Bf5+–) 12...Rb8 13.ed5 Bb7 14.c4 e4? 15.Nc3 f5 16.Nge2 Rg8 17.Ng3 Bc8 18.0–0 Bg7 19.a4 Ke7 20.Nb5 a6 21.Na7 Bd7 22.Nc6 Bc6 23.dc6 Rbc8 24.Nf5 Kd8 25.Ng7 Rg7 26.d5 Re7 27.Bf6 Ke8 28.Be7 Ke7 29.Rae1 b5 30.cb5 ab5 31.ab5 Rb8 32.Re4 Kd8 33.f4 Rb5 34.fg5 Rd5 35.Rf7 Rc5 36.c7! Kc8 37.Re8 Kb7 38.c8Q Kb6 39.Rb7 Ka5 40.Qc5! Ka6 41.Qb4 d5 42.g6 h5 43.g7 h4 44.g8B h3 45.Bd5 hg2 46.Kf2 g1N?? 47.Qb5 1–0. iczker – mufoun (1795), kurnik, 2011.

4.b5 Ne7!?+=.

4.Bc4 h6 5.Qh5 Ke7 6.Qf7 Kd6 7.Ba3 Qe7 8.b5 c5 9.Qd5 Kc7 10.Nc3 Qd6 11.b6 Kd8 12.ba7 Qd5 13.ab8Q Rb8 14.Nd5 d6 15.Ne2 Ra8 16.Bb2 Ne7 17.Nf6 h5 18.Nc3 Bg7 19.Nfd5 Nd5 20.Bd5 Ra5 21.0–0 g4 22.f3 Rf8 23.Bc1 gf3 24.gf3 Bh3 25.Rf2 b5 26.d3 b4 27.Ne2 Ke7 28.Bg5 Bf6 29.Bh6 Rg8 30.Ng3 Bh4 31.Bg8 Bg3 32.hg3 Be6 33.Be6 Ke6 34.Bd2 d5 35.Rh2 de4 36.de4 Ra3 37.Kf2 Ra8 38.Rh5 Rd8 39.g4 Rd2 40.Ke3 Rc2 41.Rf5 c4 42.g5 b3 43.ab3 Rc3 44.Kf2 Rb3 45.Ra6 Ke7 46.Re5 Kd7 47.g6 c3 48.Rh5 Rb2 49.Kg3 c2 50.Rh7 Kc8 51.Ra8 Rb8 52.Rh8 Kc7 53.Rhb8 c1Q 54.Rc8 Kb7 55.Rc1 Ka8 56.Rb1 Black resigned 1–0. themuttsknutts (1605) – snakepliscan, ChessWorld.net, 2013.

4.Qh5 Ke7

5.Nc3 c6 6.b5 Nh6 +–.

5.Nc3 c6 6.Bc4 d5 (6...Nh6!?+/–) 7.ed5+– Qd7?? (better is 7...Kd7+–) 8.dc6 Qe8 (8...Nc6 9.Qf7 Kd8 10.Qf8 Qe8+–) 9.Nd5 Kd8 10.c7 Kd7 11.cb8Q Rb8 12.Bb5 Kd6 13.Qe8 Kd5 14.c4 Ke4 15.f3 Kf4 (15...Kf5 16.g4 Kf4 17.Be5 fe5 18.Qf8 Nf6 19.Qf6 Bf5 20.Qf5) 16.Ne2 Kf5 17.g4# 1–0. Ahrens,Gerhard (2235) – Mix,Rolf (1735), remoteschach.de, 2006.

5.Nc3 Qe8 6.Nd5 Kd8 7.Qe8 Ke8 8.Nc7 1–0. Wall,Bill – Artes, Internet, 2001.

5.Nc3 Qe8 6.Nd5 Kd8 7.Qe8 Ke8 8.Nc7 Kd8 9.Na8 Bb4 (9...b6 10.h4 g4 11.Bc4+–) 10.Rb1 (10.h4 g4+–) 10...Ne7 (10...b6 11.Be5! fe5 12.Rb4+–) 11.Be5! d6 (11...fe5 12.Nf3 Double attack (12.Rb4 Discovered attack; 12.Nf3 Decoy)) 12.Bf6 Re8 (12...Rf8 13.Be7 Ke7 14.Rb4+–) 13.Rb4 d5 14.ed5 Nd7 15.Bg5 Ne5 16.d6 h6 17.Be7 Re7 18.de7 (18.de7 Ke7 19.c3+–) 1–0. marre – dppp, internet, 2010.

5.Bc4 Nc6?? 6.Qf7 (6.b5 Qe8 7.Ba3 d6 8.Qe8 Ke8 9.bc6 bc6+–) 6...Kd6 7.b5 Nge7 (7...Nb4 8.Bb3 a6+–) 8.Ba3 Nb4 9.Bb4 c5 10.Qf6 Kc7 11.Nc3 Rg8 (11...d6 12.Ba3 Bh6 13.Qh6 Kb8+–) 12.b6! ab6 (12...ab6 13.Nb5 Mate attack) 13.Nb5 Kb8 14.Qd6 Qc7 15.Qc7 1–0. DEFFM – GuestMJWV, freechess.org, 2019.

5.Bc4 d5 6.Bd5 Be6? (better is 6...Nh6 7.h3 Nc6+–) 7.Bb7 (7.Bb7 Nh6 8.h3+– (8.Ba8?! Bg4 9.Qg4 Ng4+/–)) 1–0. Wall,Bill – Kyliang, Microsoft Gaming Zone, 1997.

5.Bc4 Qe8 6.Qe2 h5 7.Nc3 c6 8.0–0–0 Nh6 9.b5 d5 10.ed5 Nf5 11.bc6 Nd4 12.Qe1 bc6 13.Qe4 Bf5 14.d6 Kd7 15.Qe1 Bc2 16.Ne4 Kd8 17.Bd4 Bd1 18.Nf6 Qg6 19.Qd1 Qf6 20.Be3 Qd6 21.Qb3 Nd7 22.Bg5 Kc8 23.Ba6 Kc7 24.Qb7 Black king mated 1–0. Crusader Rabbit (1715) – Ghost_I_be, ChessWorld.net, 2014.

5.Bc4 Qe8 6.Qf3 Kd8+–.

5.h4 d6 +/–.

5.h4 Qe8 6.hg5 Bg7 7.Qe8 Ke8 8.gf6 Bf6 9.Nf3 d6 10.Nc3 Nc6 11.Nd5 Nb4? (better is 11...Bd8+–) 12.Nb4 Ne7 13.d4 Bd7 (13...ed4 14.Bd4 (14.Nd4?! c5+–) 14...Bd4 15.Nd4+–) 14.de5 Bg7 15.Rb1 de5 16.Be5 Be5 17.Ne5 Be6 18.c4 c5 (18...c6 19.f4+–) 19.Nd5 Rc8 (19...Nd5 20.cd5 Bc8 21.Bb5 Ke7 22.Ng6 hg6 23.Rh8+–) 20.Rb7 (20.Rb7 Nd5 21.cd5+–) 1–0. asoka (2500) – rhometal (2070), net–chess.com, 2011.

5.h4 Qe8 6.hg5 Qh5 7.Rh5 d6 8.g6 Bh6 9.gh7 Rh7 10.Be2 Nc6 11.b5 Nb4 12.Kd1 a6? 13.a3+– f5 14.ab4 fe4 15.Nc3 Nf6 16.Rh4 Be6 17.ba6 ba6 18.Ra6 Rd8 19.Ne4 Rg8 20.Nf6 Kf6 21.f4 Rg2 22.fe5 de5 23.Nf3 Kf5 24.Bd3 Kf6 25.Bh7 Bf8 26.Be5 (26...Ke7 27.Bc7+–) 1–0. MarcosRamos – AlexKK, internet, 2007.

5.h4 Bh6 6.hg5 Bg5 7.Nf3 Bh6 (7...d6 8.Ng5 fg5 9.Qg5 Kd7 10.Qg7 Ne7 11.d4 ed4 12.Qg4 Ke8 13.Qh5 Kd7 14.Bd4+–) 8.Ne5! The mate threat is Qf7 8...Qe8 (8...fe5 9.Qe5 A double attack) 9.Qh4 (9.Qe8!? Ke8 10.Bc4 Na6+–) 9...Bg5 (9...d6 10.Nf3+–) 10.Qg3 d6 11.Nf3 Qg6 (11...Bh6 12.Rh6! Nh6 13.Qg7 Nf7 14.Bf6 Kd7 15.Ng5+–) 12.Ng5 fg5 (12...Nc6+–) 13.Bh8 Qe4 14.Be2 (14.Be2 h6 15.Nc3+–) 1–0. GuestBRYS – GuestQLZB, freechess.org, 2020.

3.e4 Bg7

4.Bc4 d6 5.Nf3 (5.Qh5 Kd7+–) 5...Bg4 (5...e5!?+=) 6.h3+– Bh5 7.g4 (7.h4 gh4 8.Rh4 Bg6+–) 7...Bg6 (7...Bf7!? 8.Bf7 Kf7+–) 8.Ng5!+– fg5?? A pinning theme (better 8...Qd7 9.Ne6 Bh6+–) 9.Bg7 Be4 10.0–0 (10.Bh8?! Bh1 11.Qe2 d5+–) 10...d5 11.Bd3 (11.Bb3!? Nf6 12.Bh8 Qd6+–) 11...Nf6 12.Bh8 Bd3 13.cd3 Nc6 (13...Qd6 14.Nc3 Nbd7 15.Re1+–) 14.Bf6 ef6 15.Re1 Ne7 (15...Kf8 16.Nc3+–) 16.Nc3 Qd6 (16...c6 17.b5+–) 17.Re3 (17.Nb5 Qd7 18.Qe2 Rb8+–) 17...0–0–0 (17...c6 18.Qb3 Kf7 19.Rae1+–) 18.Nb5 Qb6 (18...Qd7 19.Na7 Kb8 20.Nb5+–) 19.Qa4 (19.Na7 Kd7 20.Qf3 Qd6+–) 19...a6 (19...Nc6 20.Rb1+–) 20.Re7 ab5 (20...Qb5 21.Qb5 ab5 22.Rh7 Rd7+–) 21.Qa8 1–0. aravind555 – piothrol (1615), lichess.org, 2018.

4.Bc4 h5 5.Ne2 e5 6.d4 d6 7.de5 fe5 8.Qd5 Qe7 9.0–0 Nc6 10.a3 Nf6 11.Qd3 Be6 12.Nd2 Rd8 (12...Rf8 13.b5 Nd8 14.Rad1=) 13.Nc3 a6 (13...Bc4!? 14.Nc4 h4+=) 14.Nd5+/– Bd5 15.ed5 Nb8 16.Qg6 Qf7 17.Qg5 (better is 17.Qf7!? Kf7 18.Nf3+/–) 17...Bh6=+ 18.Qh4 Bd2 19.Rad1 (19.f4 Nbd7 (19...Nd5? 20.fe5 Qe7 21.Qe7 Ke7 22.Bd5+–) 20.fe5 de5 21.Be5 Ne5 22.Rf6 Qg7–/+) 19...Bh6 (19...Rg8 20.Rd2 Rg4 21.Qh3 Rc4 22.f4 Nd5 23.fe5–/+) 20.b5? (better is 20.f4 Rg8 21.fe5=) 20...Rg8–+ 21.Be5 de5 (better is 21...Bg5!? 22.Qd4 de5 23.Qe5 Qe7 24.Qe7 Ke7 25.d6 cd6 26.Rfe1 Kd7 27.Be6 Kc7 28.Bg8 Rg8–+ (28...Ng8?! 29.Rd5 Bf6 30.Rh5–/+)) 22.d6–/+ Rg2 (22...cd6 23.Bf7) 23.Kg2 Qg6?? 24.Kh1?? cd6 25.Rg1 Qe4 26.Qe4 Ne4 27.Rg2 Kd7 28.ba6 ba6 29.Bf7 h4 30.Bg6 Nf6 31.Bf5 Ke7 32.Rg6 Ng8?? 33.Rdg1 Kf7? 34.Be6+– Ke7 35.Bg8 Bf4 36.Rg7 Kf6 37.Rf7 Ke6 38.Rg6 Kd5 39.Rf8 Kd4 40.Rd8 Kc3 41.Rb8 Kc2 42.Rd6 e4 43.Rc8 Kb2 44.Rb6 Ka1 45.Rc2 (45...Bh2 46.Rc1) 1–0. reddragonx (1775) – rla, internet, 2007.

4.Qh5 Kf8 5.Bc4 e6 6.Nc3 h6 (6...Nc6 7.b5 Ne5 8.Bb3+/–) 7.Nf3 f5 8.ef5 ef5?? (8...d5 9.Bd3 Nf6+–) 9.Qf7 1–0. marus2 – whois, internet, 2001.

4.Qh5 Kf8 5.Bc4 e6 6.f4 Nc6+= 7.Nh3 (7.b5 Na5 8.Be2 gf4+=) 7...Nb4 8.0–0 (better is 8.Bb3!?+=) 8...Nc2+= 9.fg5 Na1 10.Ba1 c6 (10...Ke7 11.gf6 Nf6 12.Qh4+–) 11.gf6 Qf6?? (11...Bf6 12.e5 Qe8 13.Rf6 Ke7+–) 12.Bf6 Nf6 (12...Bf6 13.e5 Ke7 14.Qf3+–) 13.e5 (13.e5 Ke7 14.Qg5+–) 1–0. nevets101 – pieeater, ChessWorld.net, 2009.

4.Qh5 Kf8 5.Bc4 e6 6.h4 Qe7 (6...d5 7.Bb3 de4 8.Ne2+–) 7.hg5 Qb4?? (better 7...fg5 8.e5 Nh6+–) 8.Ba3+– Qa3 (8...a5 9.Nf3 f5 10.Bb4 ab4 11.d4+–) 9.Na3 1–0. DEFFM – NandoRox, freechess.org, 2019.

4.Qh5 Kf8 5.Bc4 Qe8 6.Qf3 Nc6 7.h4 Ne5? (7...g4 8.Qb3+/– (worse is 8.Qg4 d5 9.Qe2 dc4–/+)) 8.Qe2 (8.Be5 g4 9.Qf4 Bh6 10.Qg4 fe5 11.Qf3 Nf6+–) 8...d6 9.Bb3 Bg4 10.f3 Bd7 11.hg5 Bb5 12.c4 Ba4 13.d4 Ng6 14.Nc3 Bb3 15.ab3 e5 16.Nd5 Qd7 17.Nh3 c6? (better is 17...ed4 18.Bd4 fg5+–) 18.gf6 cd5 19.fg7 Qg7 20.de5 Ne5 21.Kf1 de4 22.Qe4 Nf6 23.Be5 de5 24.Qe5 Re8 25.Qd6 Kf7 26.Ra7 Re7 27.Qf4 Rd8 28.Ng5 Kg8 29.Ra2?? Rd1–+ 30.Kf2 Rh1 31.Ra8 Re8 32.Re8 Ne8 33.Ne6 Qb2 34.Kg3 ½–½. pumpkin (2275) – islanderfan (2040), net–chess.com, 2011.

4.Qh5 Kf8 5.Bd3 e5 6.Nf3 h6 7.0–0 d6 8.Nc3 g4 9.Nh4 Nc6 10.Ng6 Ke8 11.Nh8 Kd7 12.Nf7 Qe7 13.Bc4 Nd4 14.Qg4 Kc6 15.Qg7 Be6 16.Be6 Qe6 17.Nh6 Nh6 18.Qh6 Ne2 19.Ne2 Rg8 20.d4 ed4 21.Nd4 Kd7 22.Ne6 Ke6 23.Qf6 Kd7 24.Qf7 1–0. Abdullaevich (1755) – borisbickulov, lichess.org, 2019.

3.e4 h5

4.c3 Nc6 5.Bc4 (5.b5 Ne5+=) 5...d6 (5...e6 6.Be2 g4 7.b5+=) 6.Qb3 (better is 6.Bg8 e6 7.d4+/–) 6...Bg4?? (better is 6...Nh6+=) 7.Bg8 Qd7 (7...Ne5 8.h3 Bc8+–) 8.Qf7 Kd8 9.Qf8 Qe8 10.Qe8 Ke8 11.Bd5 Kd7 12.f3 Be6 13.Be6 Ke6 14.Ne2 b6 15.0–0 h4 16.d4 d5 17.c4! dc4 18.d5 Kd6 19.dc6 Kc6 20.Nd4 Kd6 21.Nc3 e5 22.Nf5 Ke6 23.Nd5 Rad8 24.Rad1 Rc8 25.Nde3 a6 26.Nc4 b5 27.Na5 c6 28.Rd6 Kf7 29.Nc6 Rhf8 30.Rd7 Kg6 31.Nfe7 Kh5 32.Nc8 Rc8 33.Rc1 Re8 34.Rcd1 Kg6 35.Ne7 Kf7 36.Nf5 Ke6 37.R1d6 1–0. master156 – pieeater, ChessWorld.net, 2009.

4.c3 d5 5.ed5 Qd5 6.Qf3 Qf3 7.Nf3=.

4.c4 Nc6 5.a3 (5.Be2 g4 6.h3 Bh6+/–) 5...d6 6.Nf3 (6.Be2 g4 7.h3+=) 6...Be6 (6...e5 7.d4+=) 7.d3 (7.Ng5 Bg4 8.Be2 Be2 9.Qe2 Qd7+–) 7...Qd7 (7...g4!? 8.Nh4 Bh6+/–) 8.Ng5! Bg4 9.Nf3 0–0–0 10.Be2 Rh7 11.h3+– Bf3 12.Bf3 e5 13.0–0 Kb8 14.d4 ed4+/– 15.Bd4 Rg7 16.Bh5?? Qh3 17.Qf3–/+ Qf3 18.Bf3? Nd4–+ 19.Bd1 Nh6 20.Nc3 b6 21.Nd5 Be7 22.g3 Rh8 23.Kg2 Kb7 24.Ne7 Re7 25.Ba4 Ne2 26.c5 dc5 27.bc5 bc5 28.Rab1 Kc8 29.Rb3? Ng4 30.Rfb1 Rh2 31.Kf3 Nd4 32.Kg4 Rg7 33.Kf4 Kd8 34.Rb8+/– Ke7 35.Re8 Kd6 36.Rbb8?? Rf2–/+ 37.Ke3 Rg2?? 38.Rbd8 Rd7 39.Rd7# 1–0. Darkseid – pieeater, ChessWorld.net, 2009.

4.c4 e5 5.a3+=.

4.Bc4 e6+= 5.Nf3 (5.Be2 g4+=) 5...Nc6 (5...g4!? 6.Nd4 Bb4=) 6.Ng5! Bb4 (6...fg5 7.Bh8 Pinning (7.Bh8 Deflection)) 7.a3 Ba5 8.0–0 (better is 8.Be2 Kf8 9.Nh3+/–) 8...fg5? (better is 8...Rh6 9.Nf3 Nge7+/–) 9.Bh8+– Qe7? (9...g4+–) 10.Qh5 Kd8 11.Nc3 (11.Qg6!? Qe8 12.Qg5 Nge7+–) 11...d6 (11...Nf6 12.Qg6 Bc3 13.dc3+–) 12.Qg6 (12.Qg6 Qf8 13.Qg5 (13.Be6?! Nge7 14.Qg5 Be6+/–) 13...Nge7 14.Bg7+–) 1–0. elcid10 – pieeater, ChessWorld.net, 2009.

4.d3 Nc6 5.Nd2 (5.b5 Nb8+/–) 5...d6 (5...Nb4!? 6.Be2 g4=) 6.a3 (6.b5 Ne5+=) 6...Be6 (6...e5 7.Be2 g4 8.b5+=) 7.h3 (7.d4 Bd7+/–) 7...Qd7 (7...Bf7 8.d4+=) 8.c4 (8.b5 Ne5+=) 8...0–0–0 (8...Bf7 9.b5 Nd8 10.d4+=) 9.Ngf3 (9.d4 Bf7+/–) 9...g4 10.hg4 Bg4 11.Be2 f5?? (better is 11...Bh6!?+=) 12.ef5 (12.Bh8 e5 13.b5 Nb8 14.ef5 Qf5+–) 12...Bf5?? (better is 12...Nf6 13.b5 Ne5+–) 13.Bh8 e5 (13...Nf6 14.d4+–) 14.Rh5 Bg4 (14...Qf7 15.Ne5! Ne5 16.Be5+–) 15.Rh1 Re8 (15...Bh6 16.Ne4+–) 16.Ne4 Nd4 (16...Bh6+–) 17.Nd4 ed4 (17...Be2 18.Ne2 Re7 19.N2g3+–) 18.Bd4 (18.Bg4 Re6 19.Qf3 Be7+–) 18...b6 (18...Bf5 19.Bh5 Re7 20.Qf3+–) 19.Rh4 Be2 20.Qe2 Bg7 21.0–0–0 Bd4 22.Qg4 Qg4 23.Rg4 Kb7 24.f3 a6 25.a4 Kc6 26.b5 ab5 27.ab5 Kb7 28.Kc2 Nh6 29.Rh4 Nf5 30.Nd6! cd6 31.Rh7 Kb8 32.Ra1?? Ba1–+ 33.g4 Nd4 34.Kb1 Re1 35.Ka2 Re3 36.Ka1 Rf3 37.Kb2 Rd3–+ 38.Rh6 Rb3 39.Kc1 Rc3 40.Kd2 Rc4 41.Rd6 Nb5?? 42.Rd8?? Kc7–+ 43.Rg8 Nd6 44.g5 Rg4 45.Ke3 Kc6 46.Kf3 Rh4 47.g6 Rh6 48.g7 Rf6 49.Ke3 Nf5 50.Kd3?? b5 51.Rc8+– Kb6 52.g8Q Rd6 53.Ke4 Ne7 54.Rb8 Kc6 55.Qe8 Kc5 56.Qh5 Rd5+– 57.Qe8 Rd4?? 58.Kf3+– Rd3 59.Ke2 Rd6 60.Qb5 Kd4 61.Qb4 Ke5 62.Rb5 (62.Rb5 Nd5 63.Kd3+–) 1–0. Gary_Seven – pieeater, ChessWorld.net, 2010.

4.d3 e5 5.a3+=.

4.d4 d6 5.d5 (5.Be2 g4+=) 5...Bg4 (5...e5 6.Bd3+=) 6.f3 (6.Be2 Bg7+/–) 6...Bd7+= 7.Bc4 (7.f4 gf4 8.Be2 Qc8+=) 7...h4 (7...Bg7 8.Ne2+=) 8.f4 (8.Ne2 c6+=) 8...g4 (8...gf4!? 9.Qf3 Bg7=) 9.f5 Nh6 10.g3 (10.Be2 Rg8+/–) 10...h3 (10...c6 11.gh4 a5 12.ba5 Qa5 13.Qd2=) 11.Nc3 (better is 11.Bc1+/–) 11...e5? (better is 11...c6+=) 12.de6+– Be6? (12...Bc8+–) 13.fe6 (13.Be6 c6+–) 13...Nc6 14.Ba3 (14.Qd5 Ng8+–) 14...Qe7 (14...Ne5 15.Bd3+–) 15.b5 (15.Nd5!? Qd8+–) 15...Ne5 16.Nd5 Qd8 17.e7! Be7 18.Ne7 Qe7 19.Rb1?? 0–0–0?? 20.b6?? cb6?? 21.Ne2?? Nf3?? 22.Kf1 Qe4 23.Kf2?? f5?? 24.Qd3 Qd3 25.Bd3 Rhe8? 26.Nf4?? Kd7? 27.Bb5+– Kc7 28.Be8 Re8 29.Rbd1 Rd8?? 30.Ne6 Kd7 31.Rd6 Kc8 32.Nd8 Kc7 33.Rhd1 a5 34.Rd7 Kc8+– 35.Nb7 a4 36.c4 Ne5 37.Re7 Nc4 38.Rd8 1–0. West Islander – pieeater, ChessWorld.net, 2009.

4.d4 e6 5.Bd3 Nh6 (5...Bb4 6.c3 Be7 7.Nf3=) 6.Nd2 Bg7 (better is 6...Bb4!? 7.Qh5 Nf7+=) 7.Qh5+/– (7.Qh5 Nf7 8.Qe2+/–) 1–0. rawat (2180) – rhometal (2070), net–chess.com, 2011.

4.d4 e6 5.Be2 g4 6.a3+=.

4.Be2 d6 5.Bh5 Kd7 6.Bg4 Kc6 7.b5 Kb6 8.a4 c5 9.Nc3 e6 10.d4 Rh4 11.dc5 dc5 (11...Kc7+–) 12.Qd8 1–0. bratek55 – dtpwaldi (1665), kurnik, 2011.

4.e5 Bg7 5.Bd3 Nc6 6.Nh3 Rh6= (worse 6...Ne5 7.Be5 g4 8.Bb2 gh3 9.gh3+–).

4.e5 Bg7 5.d4 Nh6 (5...fe5!? 6.de5 Nc6=) 6.Qh5+= Kf8 7.Bc4 (better 7.Qf3!?+–) 7...d5=+ 8.ed6 cd6 (8...Bg4 9.Qg6 cd6 10.Qd3=) 9.Qf3 Nc6 10.b5 Na5 (10...Qb6 A) worse 11.bc6 Qb2 12.Qc3 Qc1 13.Ke2 Qf4–/+ (13...bc6?? 14.Nd2 Qa1 15.Qa1+–); B) 11.Ne2 a6 12.a4+=) 11.Bd3 Bg4 12.Qg3 Bd7 13.Nd2 (13.Ne2 Nf5 14.Bf5 Bf5=) 13...Qb6 (13...Nf5 14.Qf3 Nh4 15.Qg3=) 14.c4 (14.h4 Nf5 15.Qg4 e6+–) 14...Rc8 (14...Nf5 15.Bf5 Bf5 16.Qf3=) 15.Rc1 (15.h4 Ng4+–) 15...Nf5 16.Qg4 (16.Bf5 Bf5 17.Ne2 a6+=) 16...Rh4= 17.Bf5 Bf5?? (better 17...e6 18.Qf3 ef5=) 18.Qf5+– Rf4 (18...e6 19.Qd3 a6+–) 19.Qc8 (19.Qc8 Kf7 20.Nh3+–) 1–0. cyril78 (1830) – chessgeneral1 (1695), gameknot.com, 2018.

4.e5 Bg7 5.Qe2 Kf8 (5...Nc6!?=) 6.Nf3+/– Nc6 7.b5 Ne5 8.Ne5 fe5 9.Be5 Nf6 10.g3 (10.Bd4!?+=) 10...d6= 11.Bb2 a6 (11...h4 12.h3=) 12.a4 (12.Qe3 g4=) 12...ab5= 13.ab5 Ra1 14.Ba1 Bd7 (14...h4 15.h3=) 15.Bg2+= Qa8 16.Bf6 Bf6 17.0–0 c6 (17...h4 18.Nc3 Bc3 19.dc3=) 18.bc6 (18.Nc3 Bc3 19.dc3 cb5+=) 18...Bc6 19.Bc6 bc6 20.Re1 Qa2 (20...h4 21.Qe6=) 21.c4+= d5 22.cd5 Qd5 23.Nc3 Qc5 24.Ne4 Qe5 25.Nf6 Qf6 26.Qe6 Qe6 27.Re6 Kf7 28.Rc6 Rd8 29.Rc2 Kf6 30.Kg2 e5 31.Kf3 Kf5 32.h3 g4 33.hg4 hg4 34.Ke3 Rd5 35.f3 gf3= 36.Kf3 Rd3 37.Kf2 e4 38.Kg2 Kg4 39.Kf2 Rg3 40.Rc4 Kf4 41.d4?? Rd3 42.Ke2–/+ Ra3 43.d5 Ke5?? 44.Rc5 Kd6 45.Rb5= Rd3 46.Kf2 Rd5 47.Rd5 Kd5 48.Ke3 Ke5 49.Ke2 Kd4 50.Kf2?? e3 51.Ke2 Ke4 52.Ke1 Kd3 53.Kd1 Ke4 54.Ke2 Kf4 55.Kf1?? Kf3–+ 56.Ke1 e2 57.Kd2 Kf2 58.Kd3 e1Q 59.Kd4 Qe3 60.Kd5 Kf3 61.Kc4 Qd2 62.Kc5 Ke4 63.Kc4 Qc2 64.Kb5 Kd5 65.Kb4 Qc4 66.Ka3 Qb5 67.Ka2 Kc4 68.Ka1 Kc3 69.Ka2 Qb2 0–1. joaquimbage – milanio, playok.com, 2012.

4.e5 Bg7 5.Be2 h4+=.

4.Nf3 e5 5.a3+=.

4.Nf3 g4 5.Ng5?? (better is 5.Nh4+/–) 5...Bh6 6.f4 gf3?? (better is 6...e5–/+) 7.Nf3+= e5? (7...d5 8.Bd3+=) 8.Nh4 (better is 8.Ne5!? Bg5 9.Nf3+–) 8...Bg5+/– 9.Nf5 d6 10.h4 Bf5 11.ef5 Bf4 12.Be2 (better is 12.Qf3!? Nc6 13.b5+/–) 12...Bg3= 13.Kf1 Qd7 14.Bd3 Ne7 (better is 14...d5!? 15.Qf3 e4 16.Qg3 Qf5 17.Kg1 ed3 18.Qc7 Qd7+=) 15.Qf3+/– Nf5?? (better is 15...e4 16.Qe4 d5+/–) 16.Bf5 (16.Qb7 0–0 17.Bc4 Kg7 18.Qa8 c6+–) 16...Qb5 17.Bd3 (17.d3!? Bf4 18.g3 Bh6 19.Qh5 Kd8+–) 17...Qb4 18.Ba3 (18.Qg3!? Qb2 19.Qg6 Kd7 20.Qg7 Kc6 21.Qh8 Qa1+–) 18...Qf4 19.Qf4 (19.Nc3!? Qf3 20.gf3 Nc6+–) 19...Bf4+/– 20.Bg6 Ke7 21.Be4 c6 22.Kf2 Ke6 23.g3 Bh6 24.Bc1 d5 25.Bg2 f5 26.Bh3 Nd7 27.d3 Nf6 28.Bh6 Rh6 29.Nd2 Ng4 30.Bg4 fg4 31.Kg2 Rf8 32.Rhf1 Rhf6 33.Rf6 Rf6 34.Rf1 b5 35.Rf6 Kf6 36.Nb3 a6 37.Kf2 Kf5 38.Ke2 e4 39.d4 Kf6 40.Ke3 Kg6 1–0. miscap – jackw171, kurnik, 2012.

4.Nf3 Bg7 5.Bc4 (better is 5.Ng5 e5 6.Nf3+/–) 5...d6? (5...g4 6.Nd4+=) 6.Nc3?? (better is 6.Ng5 fg5 7.Bg7+–) 6...Nc6+= 7.h3 (7.Bb5 Bd7+=) 7...e5 (7...Nb4!? 8.a3 Nc6=) 8.a3+= Bd7 9.Nd5 Nge7 10.d4 ed4 11.Nd4 f5?? 12.0–0 Nd4 13.Bd4+/– Bd4? 14.Qd4+– Rh6 15.Nf6 Rf6 16.Qf6 g4 17.Qf7 1–0. xorb – pieeater, ChessWorld.net, 2009.

4.Be2 g4

5.h3 d6 6.hg4 d5 7.gh5 (better is 7.g5!? Qd6 8.gf6 ef6 9.ed5 Qd5+–) 7...de4 8.Nc3 f5 (better is 8...Bf5+–) 9.Ne4! Rh6 (9...fe4 10.Bh8 Discovered attack) 10.Ng5 Nf6 (10...e6 11.N1h3 Be7 12.f4+–) 11.Bf6 (better is 11.N1f3 Ne4 12.Ne4 fe4 13.Ne5+–) 11...ef6 12.N5h3 Bb4 13.c3 Bd6 14.d4 Qe7 15.Qd2 f4? (better is 15...Rh5 16.Kf1 Rh8+/–) 16.Nf4 b5 (16...Nc6 17.Nf3 Bd7 18.d5+–) 17.Nd5 (better is 17.Kf1 Qh7 18.Bb5 Bd7 19.Qe3 Kf8 20.Ne6 Be6 21.Qe6+–) 17...Qe4 (17...Qg7 18.Bf3 c6 19.Ne2+–) 18.Qe3 (better is 18.Qh6 Qd5 19.Bf3 Qe6 20.Kd2+–) 18...Qe3 19.Ne3 f5 (19...a6+–) 20.Bb5 c6 21.Ba4 f4 22.Nc4 Bc7 23.Ne5 Be6 (23...Be5 24.de5 Nd7 25.Nf3+–) 24.Nc6 (24.Ne2!? f3 25.gf3 Bd5+–) 24...Nd7 (24...Bd7 25.d5+–) 25.Ne2 Bd5 (25...Kf8 26.Rh4+–) 26.Ne5 Ba5 (26...Be5 27.de5 Bg2+–) 27.Bd7 Kd8 (27...Ke7 28.0–0 f3 29.Nf4+–) 28.Rb1 Ba2 (28...Bg2 29.Rg1 f3 30.Rb7+–) 29.Ra1 Bc3 (29...Bc7 30.Bf5 Bb3 31.Be4+–) 30.Nc3 Bg8 31.Rh4 a5 32.Rf4 Kc7 33.Rc1 Rh5 34.Nb5 Kb6 (34...Kb8 35.Rf8 Kb7 36.Bc6 Ka6 37.Ra8 Kb6 38.Nd7) 35.Rf6 Kb7 (35...Be6 36.Re6 Kb7 37.Rc7 Kb8 38.Rb6) 36.Bc6 (36.Rc7 Kb8 37.Rf8) 36...Ka6 (36...Kb6 37.Be8 Be6 38.Re6 Kb7 39.Rc7 Kb8 40.Rb6) 37.Ba8 (37.Be8 Be6 38.Re6 Kb7 39.Rc7 Kb8 40.Rb6) 37...Kb5 38.Rb1 Ka4 39.Kd2 Ba2 (39...Rh1 40.Rh1 Ba2 41.Rb6 Bb1 42.Rhb1 Ka3 43.Ra1) 40.Bc6 Ka3 41.Rf3 Bb3 42.Rbb3 Ka2 43.Ra3 Kb2 44.Rfb3 1–0. rcm06 (1905) – biopsiquis, gameknot.com, 2012.

5.h3 d6 6.hg4 h4 7.g5 e5 8.Bh5 Ke7 9.Nf3 fg5 10.Ng5 Nf6 11.Nf7 Qd7 12.Nh8 Nh5 13.Qh5 Qe6 14.Ng6 Kf7 15.Nh8 Kg8 16.d4 Bd7 17.de5 Be8 18.Qg5 Bg7 19.Rh4 Bg6 20.Qd8 Be8 21.ed6 Bb2 22.dc7 Nc6 23.Qg5 Kf8 24.Rf4 Bf7 25.Nf7 Qf7 26.Rf7 Kf7 27.Qf5 Ke7 28.c8Q Rc8 29.Qc8 Ba1 30.f4 Bf6 31.g4 Nd4 32.e5 Nf3 33.Kf2 Ne5 34.fe5 Be5 35.g5 Kd6 36.g6 b5 37.g7 Bg7 38.Nd2 Bd4 39.Kf3 a6 40.c4 bc4 41.Nc4 Kd5 42.a4 Bc3 43.Qc5 Ke6 44.b5 ab5 45.ab5 Ba5 46.b6 Bb6 47.Nb6 Kf7 48.Qd6 Kg7 49.Qe6 Kh7 50.Qf6 Kg8 51.Qe7 Kh8 52.Kf4 Kg8 53.Qg7 Kg7 ½–½. iczker – spaski2, kurnik, 2014.

5.h3 d6 6.hg4 Nh6 7.g5 Ng4 8.Nh3 +–.

5.h3 Bh6!? +/–.

5.h3 Nh6 6.hg4+– hg4 7.Bg4 Bg7 8.Bh5 Kf8 9.Ne2 d6 10.Nf4 Rh7 11.Ng6 (11.Bg6!? Rh8 12.Bf5 Kg8+–) 11...Kg8 12.f4 e5 13.f5 d5 14.d3 Qd6 15.Bc1 Nf7 (better is 15...b5+–) 16.Ne5?? (better is 16.Nf4! Ng5 17.Nd5+–) 16...Ne5–/+ (16...Qe5? 17.Bf7 Kf7 18.Rh7 Bf5 19.Qh5 Bg6 20.Qe5 fe5 21.Rg7 Kg7 22.ed5+–) 17.Bb2? (better is 17.d4 de4 18.de5 Qd1 19.Kd1 Bf5 20.Ke1–+) 17...de4–+ 18.Be5 (18.d4 Nc4 (18...Qb4?! 19.Bc3 Qd6 20.de5 Qd1 21.Kd1 Bf5 22.ef6 Bf6 23.Bf6–/+) 19.Qg4 Ne3 (19...Nb2?! 20.Bf7 Kf7 21.Rh7–+) 20.Qe4 Qg3 21.Ke2 Bf5–+) 18...Qe5 19.c3 Kf8 20.Qb3 Bh6 21.d4 Qg3 22.Kf1 Be3 23.Qc2 Bf5 24.Nd2 Qf2 0–1. iczker – spaski2, kurnik, 2013.

3.Nf3 d5

4.Ng5 Nc6 5.e3 Bg7 6.Qh5 Kd7 7.Nf7 1–0. anonymouuus – francheska73, playok.com, 2012.

4.Ng5 e5!? 5.e4 Bb4? 6.Qh5 Kd7 7.Nf7 +–.

4.Ng5 e5!? 5.e4 fg5 6.Qh5 Ke7 7.Qg5 Nf6 8.Be5 Kf7=.

4.Ng5 e5 5.e4 h5 6.Bb5 c6=.

4.Ng5 Bh6 5.Nf3+/– Bg4 6.e3 Bf3 (7.Qf3 Qd6+–; 6...e5!?+/–). magne – crystal palace, ChessWorld.net, 2005.

4.Ng5 Nh6 5.e4 de4? 6.Qh5+– Kd7 7.Ne4 Nc6 8.g3 Nb4 9.Nc5 Kc6? 10.Bg2+– Nd5 11.Qd5?? Qd5=+ 12.Bd5 Kc5 13.Nc3+= Bf5? 14.Ba3+– Kb6?? 15.Rb1 Ka5 16.Rb5 Ka6 17.Bb7 1–0. jelgava – crystal palace, ChessWorld.net, 2005.

4.Ng5 Nh6 5.e4 e5 6.Qh5 Kd7 +/–.

3.Nf3 d6

4.Ng5 b5 5.e3 fg5 6.Bh8 e5 7.Qh5 Kd7 8.Qh7 Be7 9.Qd3 Nc6 10.Qb5 a6 11.Qa4 Nf6 12.Bf6 Bf6 13.Bd3 a5 14.Bf5 Ke7 15.Bc8 Nb4 16.Bf5 Qb8 17.Qd7 Kf8 18.Bg6 Be7 19.Qf5 Kg7 20.Qf7 Kh6 21.Qh7 1–0. Crusader Rabbit (1775) – Islander539, ChessWorld.net, 2019.

(4.Ng5 e5+=). magne – goatmilk, ChessWorld.net, 2005.

4.Ng5+/– h6 5.Nf3 e5 6.e3 Bg4 7.Be2 Nc6 8.b5 Na5 9.h3 Bf3 10.Bf3 Qd7 11.Bh5 Kd8 12.a4 Nc4 13.Bc3 d5 14.d3 Nd6 15.Bb4 Qg7 16.0–0 Nf5 17.Qg4 (17.Bf8 Qf8 18.e4 de4 19.de4 Nd6+–) 17...Nge7 (17...Qg4!? 18.Bg4 Bb4 19.Bf5 Ne7+/–) 18.c4+– d4 (18...Qg5 19.Nc3+–) 19.e4 (19.Qe4 Rb8 20.Be7 Ne7 21.ed4 Qg5+–) 19...Nd6 (19...Qg4 20.Bg4 Ng7 21.c5+/–) 20.f4 Qg4 21.hg4 ef4? (21...Ndc8 22.a5+/–) 22.Rf4 (22.Bc5 a6 23.Bd4 Ng8+–) 22...Bg7 (22...Ne8+–) 23.Nd2 a6 24.Nb3 ab5 25.ab5 Ra1 26.Na1 b6 27.Bd6 cd6 28.Nb3 Kd7 29.Nd4 Ra8 30.Nf5 Nf5 31.Rf5 Ra3 32.Rf3 Kc7 33.Bf7 Kd7 34.Bg6 Ke7 35.Bf5 Kf7 36.Kh2 Ke7 37.Kg3 Kf7 38.Kh4 Ke7 39.Kh5 Kf7 40.Bd7 Ra2 41.Rg3 Ke7 42.Bc6 Kf7 43.Bd5 Ke7 44.Kg6 Kf8 45.Be6 Ra1 46.Kf5 Rg1 47.Bd5 Rd1 48.Ke6 Ra1 49.Kd6 Ra7 50.Kc6 Ra2 51.Kb6 Rb2 52.Kc6 Ke7 53.b6 Kd8 54.Be6 Ke7 55.Bf5 Rb4 56.Kc7 Rb1 57.b7 h5 58.b8Q Rb8 59.Kb8 hg4 60.Rg4 Bf8 61.c5 Kd8 62.Rg8 Ke7 63.c6 Kf7 64.Rf8! Kf8 65.c7 Ke8 66.c8Q Ke7 67.d4 Kd6 68.d5 Ke5 69.Qe6 Kf4 70.g4 Kg5 71.d6 Kf4 72.d7 Ke3 73.d8Q Kf4 74.Qef6 Kg3 75.e5 Kf4 76.e6 Kg3 77.e7 Kf4 78.e8Q Kg3 79.g5 Kh2 80.g6 Kg2 81.g7 Kh2 82.g8Q Kh1 83.Bh3 Kh2 84.Qg2 1–0. mete61 – keks21, kurnik, 2013.

3.Nf3 g4

4.Ng5 h5 5.d4?? d6?? (better is 5...fg5 6.e4 e5–+) 6.d5+= Bh6 7.Ne4 Qd7 8.e3 a6 9.Bd3 b6 10.Ng3 Bb7 11.Bg6 Kd8 12.Bf5 Qb5+= 13.c3 Bd5 14.Nd2 Bg2 15.Rg1 Bf3?? 16.Qc2 Nd7 17.a4 Qc6 18.Nh5 Be3?? 19.Ng7?? Bd2–+ 20.Kd2 Rh2 21.Ne6 Kc8 22.Qd3? Rf2 23.Kc1 Nh6 24.Nd4 Qd5 25.Be6 Qe5 26.Re1 Qg3 27.Nc6 Rc2! 28.Kc2 Be4?? 29.Re4 Qf2 30.Re2 Qf4 31.Ne7 Kd8 32.Qh7 g3 33.Nc6 Kc8 34.Qd7 Kb7 35.Bd5 Qf5+– 36.Qf5 Nf5 37.Ne7 (37.Ne7 c6 38.Bc6 Kc7 39.Ba8 Kd7 40.Nf5 g2 41.Re7 Kd8 42.Bg2 a5 43.Rh1 ab4 44.Rh8) 1–0. captainevans – radpo, playok.com, 2012.

4.Ng5 h5 5.h4 gh3 (5...e5!? 6.Ne4 d5–/+) 6.Rh3 Rh6 7.Ne4 d5 8.Ng3? (better is 8.Rd3=) 8...Bh3 9.gh3 Qd6 (9...e6 10.e3–+) 10.e3? (10.Nf5 Qb4 11.Ba3 Qf4 12.Nh6 Nh6+=) 10...h4?? (better is 10...Qb4 11.Ba3 Qa5–+) 11.Nf5= Qh2?? (better is 11...Qb4 12.Nh6 Qb2 (worse is 12...Bh6 13.Qh5 Kf8 14.Ba3+/–) 13.Qh5 Kd8 14.Qd5 Nd7 15.Nf7 Ke8=) 12.Nh6+– Bh6 13.Qh5 Kf8 14.Qh4 Nd7 15.Nc3 c6 16.0–0–0 Qd6 17.a3 a5 18.Be2 ab4 19.ab4 Qb4?? (better is 19...e5+/–) 20.d3 Qh4–+ (20...Qh4 21.Rf1 Qh3–+) 0–1. arti000 – radpo, kurnik, 2012.

3.Nf3 Bg7

4.e4 h6 5.Bc4 e6 6.d3 c6 7.Bb3 Ne7 8.Nbd2 0–0 9.Nc4 d5 10.Na5 b6 11.Nc4 dc4 12.Bc4 b5 13.Bb3 Kh8 14.0–0 e5 15.Qe2 Nd7 16.Rfd1 Nb6 17.c3 Bg4 18.Qe3 Qd7 19.d4 Bf3 20.Qf3 g4 21.Qe3 ed4 22.cd4 f5 23.e5 Ned5 24.Qe1 Nf4 25.Rac1 Nbd5 26.Rc5 Ne6 27.Rcc1 Qe7 28.a3 Rac8 29.Qe2 Qg5 30.g3 h5 31.Bd5 cd5 32.Qb5 Rc1 33.Bc1 Qg6 34.Qd5 Ng5 35.Bf4 Nf3 36.Kg2 h4 37.Rc1 h3 38.Kf1 Qa6 39.Rc4 1–0. alessandrocarvalhaes (1790) – Adjailton (1755), lichess.org, 2019.

4.Ng5 d6 5.e3 e5? (5...Nh6+–) 6.Nf3 (better 6.Qh5 Kd7 7.Nf7+– (7.Nh7?! Qe7+–)) 6...Be6 (6...Ne7 7.d4+–) 7.c4 Nd7 8.c5 (8.d4!?+–) 8...dc5+= 9.bc5 Nc5 10.Bb5 (better 10.d4!? Nd7 11.Bd3+=) 10...c6=+ 11.Bd3?? (better 11.Qc2 Qb6 12.Ba3 Qb5 13.Bc5=+) 11...Nd3–+ 12.Ke2 (12.Kf1 Nb2 13.Qc2 Qd3 14.Qd3 Nd3–+) 12...Nb2 (better 12...Bc4 13.Qc2 Nb2 14.Ke1 Qd3 15.Qd3 Nd3 16.Ke2 Nb4 17.Kd1 e4–+) 13.Nc3 (13.Qc2 Bc4 14.Ke1–+) 13...Nd1 (13...Qd3 14.Ke1 Nd1 15.Rd1–+) 14.Rhd1 Ne7 15.Rdb1 Qc7 (better 15...Bc4 16.Kd1 Qd7 17.Ne4–+) 16.Rb7 Qb7 17.Nd5 Bd5 18.Rb1 Bf3 19.Kf3 Qb1 20.Kg4 Qa2 (20...h5 21.Kf3 Qd1 22.Ke4 Rd8 23.g4 Qg4 24.f4 f5) 21.Kh5 (21.g3 Qd2 22.Kf3 e4 23.Kg2 Nd5 24.g4 Qe2 25.h3 Ne3 26.Kg3 Qf3 27.Kh4 Ng2 28.Kh5 Qh3) 21...Qd2 22.f4 (22.Kg4 Qe2 23.f3 Qg2 24.Kh4 Qh2 25.Kg4 h5) 22...Kf7 (22...Qe2 23.Kh4 Nf5 24.Kh3 Qh5) 23.g4 (23.g3 Qh2 24.Kg4 f5 25.Kf3 e4) 23...ef4 (23...Qh2) 24.h4 (24.g5 Qh2 25.Kg4 Qg3 26.Kh5 Qg5) 24...fe3 25.g5 e2 (25...Qe2) 26.gf6 (26.g6 hg6 27.Kg4 e1N 28.h5 Qg5 29.Kh3 Rh5) 26...Bf6 (26...e1Q 27.Kg4 Qg2 28.Kh5 Qee2) 27.Kg4 e1Q 28.Kh5 (28.h5 Rhg8 29.Kh3 Qg2) 28...Qd5 (28...Qh4) 29.Kh6 Qh4 0–1. Agiant – TESTIngforyou, lichess.org, 2019.

4.Ng5!+/– fg5 5.Bg7.

4.Ng5!+/– h6 5.Nf3 Nc6 6.a3 d5 7.e3 e5 8.Be2 d4 (better is 8...Be6!?+/–) 9.ed4+– ed4 10.0–0 d3? (better is 10...a6+–) 11.Bd3 Ne5 12.Qe1 Ne7 13.Ne5 fe5 14.Be5 Be5 15.Qe5 Rf8 16.c4 Rg8?? 17.Bc2 Bh3 18.Qh5 Kf8 19.Qh3 Qd2 20.Nd2 Nf5 21.Qf5 Ke8 (21...Kg7 22.Qg6 Kf8 23.Qf6 Ke8 24.Rae1 Kd7 25.Bf5#) 1–0. ourang – waldemarija, kurnik, 2012.

4.Ng5 h6 5.Nf3 d6 6.e3 Bg4 7.Be2 Nd7 8.d4 e5 9.c4 Ne7 10.Nbd2 Nc6 11.a3 a5 12.b5 Ne7 13.0–0 c6 14.h3 Bh5 15.bc6 bc6 16.de5 fe5 17.Ne4 0–0 18.Nd6 Nf5 19.Nf5 Bf3 20.Bf3 Rf5 21.Bc6 Ra7 22.Qc2 Qf6 23.Rad1 Nc5 24.Be4 Ne4 25.Qe4 Qf7 26.Rd5 a4 27.Be5 Re7 28.Rd8 Kh7 29.f4 Be5 30.fe5 Ree5 31.Rf5 Rf5 32.Rd5 Kg6 33.g4 1–0. ourang – er1c, kurnik, 2013.

3.Nf3 h5

4.Ng5 fg5 5.Bh8.

4.Ng5 Bg7 5.Nf3 e5 6.d3 d5 7.e3 Bg4 8.Be2 a5 9.a3 b6 10.h3 Be6 11.c4 ab4 12.ab4 Ra1 13.Ba1 c5 Black prepares the advance d4 14.0–0 (14.bc5 bc5 15.Nh4 Bf7+–) 14...d4 15.ed4 cd4 16.Qa4 Bd7 17.Qa7 (better is 17.b5!?+/–) 17...Nc6= 18.Qb7 Nb4 19.Nbd2 Ne7 20.Rb1 Nbc6 21.Qb6 (21.Rb6? Bc8 22.Qc6 Nc6 23.Rc6 Bh3 24.gh3 Qa8–+) 21...0–0 22.Ne4 Qe8 23.Qc7 Bf5 24.Nd6 Qg6?? (better is 24...Qd8 25.Qd8 Rd8 26.Nf5 Nf5+–) 25.Nh4 (25.Nh4 Qg5 26.Nhf5 Nf5 27.Ne4+–; 25.Nf5?! Qf5 26.Nh4 Qe6+/–) 1–0. donaldzikzpo – dziara89 (1645), kurnik, 2012.

4.h3 a5 5.b5 b6 6.Ng5 Bb7 7.Nf3 d5 8.a4 Nh6 9.e3 Rg8 10.Nh4 Qd6 11.Qh5 Kd8 12.Nc3 Nd7 13.Ne2 Ne5 14.Nd4 Kc8 15.Be2 Kb8 16.0–0 Ka7 17.f4 Nc4 18.Bc4 dc4 19.Nhf3 e5 20.fe5 fe5 21.Nf5 Nf5 22.Qf5 Bg7 23.d3 cd3 24.cd3 Raf8 25.Be5 Be5 26.Qe5 Qe5 27.Ne5 Rg2 28.Kh1 Rg5 29.Nc6 Bc6 30.bc6 Rh8 31.Kh2 Rc5 32.Rac1 Rch5 33.Rf3 Rh4 34.d4 b5 35.Rc5 b4 36.Ra5 Kb6 37.Rb5 Kc6 38.Rb4 Kd5 39.a5 Ke4 40.Rg3 Ra8 41.Rb5 c6 42.Re5 Kd3 43.Rg6 Ra6 44.Kg3 c5 45.Kh4 cd4 46.Ra6 de3 47.Rd6 Ke2 48.Rde6 Kf2 49.Re3 Kf1 50.Rf6 Kg2 51.Rg3 Kh2 52.Rf2 Kh1 53.Ra3 1–0. Abdullaevich (1835) – khinela (1980), lichess.org, 2018.

4.h4 g4 5.Ng5 Rh6N 6.Ne4 d5 7.Ng3 e5 8.e3 Bb4 9.a3 Bd6 10.c4 dc4 11.Bc4 Ne7 12.Qb3 Nd7 13.Bf7 Kf8 14.Bh5 (14.Nh5?? Nc5 15.Qc4 b5–+) 14...Rh7 (better is 14...Ng6!?+=) 15.Bg4+/– Nc5 16.Qc4 (better is 16.Qc2 Rh8 17.Bc8 Rc8 18.d4 ed4 19.Bd4+–) 16...Bg4–/+ 17.Qg4 Nb3 (better is 17...Nd3 18.Ke2 f5 19.Nf5 Nb2+=) 18.Ra2+/– Qe8 19.Nf5 (19.Qf3 Rh6+–) 19...Nf5 20.Qf5 Qf7 21.0–0?? (better is 21.Nc3+/–) 21...Ke7 22.g3 Rg8 23.Qc2? (better is 23.d4 Rh4 24.de5 fe5 25.Qf7 Kf7 26.Kg2–/+) 23...Rh4–+ 24.Nc3 Rgh8 25.Ne4 Rh1 26.Kg2 R8h2 27.Kf3 Qh5 28.g4 Qh3 29.Ke2 Nc5 30.Nd6 Qf1 31.Kf3 Rh3 (31...Qf2) 0–1. arti000 – radpo, kurnik, 2012.

3.Nf3 h6

4.e3 g4 5.Ng1 (better is 5.Bd3!? d5 6.Nh4+/–) 5...h5 6.d4 b6 7.c4 Bb7 8.Nc3 e6 9.Qc2 (9.a3 a5 10.b5 f5+=) 9...Qe7 (9...Bb4!? 10.h3 gh3 11.Qg6 Kf8 12.Rh3 h4=) 10.a3+= Nc6 11.0–0–0 0–0–0 12.d5 ed5 (12...Ne5!?+=) 13.cd5+/– (13.Rd5?! Qe6=; 13.Nd5?! Qf7+=) 13...Ne5 14.f4 (14.Nb5 d6 15.Na7 Kb8+/–) 14...Ng6? (14...gf3 15.d6 Qh7+=) 15.Nb5 Qe3? (better is 15...Kb8 16.Qg6 Qe3 17.Kb1 a6+/–) 16.Kb1+– a6 (16...c6 17.dc6 Bc6 18.Na7 Kc7+–) 17.Qc7 (17.Qg6 ab5 18.Bb5 Qf4+=) 1–0. captainevans – radpo, playok.com, 2012.

4.e3 e5 5.a3=.

4.e4+= e5 (5.Bc4 d5 6.Bd5 c6+=). magne – Tricky.1, ChessWorld.net, 2005.

4.h4 Bg7 5.hg5 hg5 6.Rh8 Bh8 7.Ng5 b6 8.e3 fg5 9.Qh5 Kf8 10.Qh8 Kf7 11.Qg7 Ke6 12.Bc4 d5 13.Qe5 Kd7 14.Qd5 Ke8 15.Qg8 Kd7 16.Qd5 Ke8 17.Qa8 c6 18.Qb8 b5 19.Be6 Be6 20.Qd8 Kd8 21.d3 Kc7 22.Nd2 Kb6 23.Ne4 a5 24.ba5 Ka5 25.Ng5 Bd5 26.e4 Bg8 27.0–0–0 e6 28.Rh1 e5 29.Kb1 c5 30.Be5 c4 31.Rh8 cd3 32.Rg8 d2 33.Rd8 Ka4 34.Rd2 b4 35.Bb2 b3 36.cb3 Kb4 37.e5 Kc5 38.e6 1–0. bungo – rryy44, kurnik, 2013.

3.Nf3 Bh6

4.e4 e5 5.Bc4 Ne7 (5...Qe7 6.a3+/–) 6.c3 (6.Ne5 fe5 7.Qh5 Ng6 8.Qh6 d6+–) 6...d6 (6...g4 7.Ng1 d5 8.ed5 Nd5 9.h3+=) 7.d4 (7.Ne5 de5 8.Qh5 Ng6 9.Qh6 Qe7+/–) 7...Bg4 (7...g4 8.Nfd2+=) 8.h3+/– Bf3 9.Qf3 (9.gf3?! Ng6=) 9...Bg7 10.Nd2 ed4 11.cd4 Nbc6 12.a3 a6 13.d5 (better is 13.Qh5 Ng6 14.0–0+–) 13...Ng6?? (better is 13...Ne5 14.Be5 fe5+/–) 14.dc6+– Nh4 15.Qb3 Ng2 16.Kf1 Nf4 17.Bf7 Ke7 18.cb7 Rb8 19.Bd5 Qd7 20.Rc1 h5 21.f3 Qb5 22.Nc4 h4?? 23.a4 Qd7 24.Na5 Nd5 25.Qd5 c5 26.Nc6 Ke8 27.Nb8 Qd8 28.Na6 Qe7 29.b8Q Qd8 30.Qe6 Kf8 31.Qd8 1–0. Bandy 1 – karlsdad, ChessWorld.net, 2013.

4.h4 e6 5.hg5+/– Bg5?? 6.Ng5+– fg5 7.Bh8 Nf6 8.e3 b6 9.Bf6 Qf6 10.Qh5 Ke7 11.Qh7 Kd6 12.Nc3 Nc6 13.Ne4 Kd5 14.Nf6 Kd6 15.Ne4 Kd5 16.c4 Ke5 17.f4! gf4 18.Rh5 1–0. jelgava – goatmilk, ChessWorld.net, 2005.

4.h4 g4!? 5.Nh2 d6+=.

3.Nf3 Nh6

4.e4 g4 5.Ng1 e5+=.

4.g3 g4 5.Nh4=.

4.g3 Bg7 5.d3 (5.Ng5!? e5 6.Nf3+=) 5...0–0 6.Bg2 d6 7.0–0 Bg4 (7...e5 8.c4=) 8.a3 Nd7 9.Qc1 Ne5 (9...e5 10.Nc3=) 10.Nbd2 (10.Ne5 fe5 11.Nc3 c6+/–) 10...Qd7 11.d4 Nf3 12.ef3 Bh3 13.c4 Bg2 14.Kg2 f5 15.Nb3 g4 16.f4 Nf7 17.d5 e5 18.de6 Qe6 19.Bg7 Kg7 20.Qc3 Kg8 21.Rae1 Qd7 22.Nd4 Rae8 23.Qd3 Nh6 24.Re3 c5 (24...Re3!? 25.Qe3 Re8=) 25.Nb5+/– Re3 26.fe3 (26.Qe3?! a6 27.Nc3 cb4 28.ab4 Qc6 29.Nd5 Qc4 30.Qe6 Kg7 31.Qd6 Qe4 32.Kg1 Rf7+=) 1–0. giorgo – zijo2000, kurnik, 2013.

4.Ng5 Bg7 5.e3 0–0 6.Nh3 e5 7.c3 Nc6 8.Na3 b5? (better is 8...d5!?+=) 9.Nb5 d5 10.a4 Bg4 11.Qc2 f5 12.Ng1 f4 13.h3 Bf5 14.Qb3 fe3 15.de3 a5 16.Nf3 e4 17.Nfd4 Bd4 18.Nd4 Nd4 19.cd4 ab4 20.a5 Nf7 21.Bc1 Nd6? 22.Qd5 Kg7 23.Bd2 Ra6 24.Ba6 Re8 25.Bb4 Be6 26.Qe5 Kf7 27.Qh5 Kg8 28.Qd1 Qb8 29.Rb1 Qa8 30.Be2 Qd5 31.a6 Ra8 32.Bc5 Nc8 33.Ra1 Qg5 34.g3 Na7 35.h4 Qd5 36.Qc1 Qb3 37.Ra3 Qb8. nakpim – lemaunguyen, kurnik, 2012.

3.g3 Bg7

4.d3 e5 5.Nd2 Ne7 6.Bg2 Ng6 7.Ngf3 0–0 8.a3 c6 9.c4 d5 10.0–0 d4 11.Ne4 Bf5 (11...g4!? 12.Nfd2 f5=) 12.Nfd2 Nd7 (12...Be4 13.de4 Qd7 14.c5+=) 13.Qb3 (13.Nd6 Ne7+/–) 13...Kh8 (13...Be6 14.Qc2=) 14.Rfe1 (better is 14.Nd6!? Bg4 15.h3+/–) 14...Be6+= 15.Qc2 a6 16.Nb3 h6 17.Na5 Qc8 (better is 17...Qc7!?+=) 18.Nd6+– Qc7 19.Ndb7 (19.Nab7?! Rfb8+=) 19...Nb6? (19...Ne7 20.c5+–) 20.Nd6! Qd6 21.c5 Qc7 22.cb6 Qb6 23.Nc6 Rac8 24.Qa4 (24.Rac1 Ne7 25.Qc5 Qc5 26.Rc5 Nc6 27.Bc6 Rc7+/–) 24...Rf7 (better is 24...Bd7!? 25.Rac1 Ne7 26.Ne7 Ba4 27.Rc8 Rc8 28.Nc8 Qe6–+) 25.Rac1+/– Rfc7 26.Rc5 Bd7 27.Rec1 Bf8 28.R5c2 Ne7 29.b5?? ab5–+ 30.Qa5 Qa5 31.Na5 Rc2 32.Rc2 Rc2 33.Bd4 Nf5 34.Bb6–+ Ba3 35.Be4 b4 36.Nc4 Rc4! 37.dc4 b3 38.Kg2 Nd6 39.Bb1 Nc4 40.Ba7 Nd2 41.Bd3 e4 42.Bc4 b2 43.Ba2 Be6! 44.Be6 b1Q (44...b1Q 45.h4 Qf1 46.Kh2 Qe2–+) 0–1. linakip – paszko1957, kurnik, 2012.

4.e4 h5 +/–.

4.Bg2 c6 5.e4 e5 6.a3 d5 7.ed5 cd5 8.d3 (8.Qh5!? Ke7 9.f4 gf4 10.gf4+=) 8...Be6= 9.Nd2 Ne7 10.Ne2 Nd7 11.0–0 0–0 12.c4 Rc8 13.Qb3 d4 (13...dc4!? 14.dc4 Nb6+=) 14.Rac1 (14.Bb7 Rb8 15.Bg2 a5+/–) 14...b6 15.Qa2 h5 (15...g4 16.Rce1 Bh6 17.Nb3=) 16.Qa1 Ng6 17.Ne4 h4 18.Nd6 Rc7 (18...Rb8 19.Rfe1 h3 20.Bh1+–) 19.Nb5+/– Rc8 20.Na7 Rc7 21.Nb5 Rc8 22.Nd6 Rc7 23.Ne4 (23.Rfe1 h3 24.Bh1 Re8+–) 23...hg3 24.hg3 (24.N2g3?! Nf4 25.Qb1 Qe7=) 24...f5 25.Nd2 f4 26.Be4 f3? (better is 26...Qf6+/–) 27.Nd4+– (27.Bg6? fe2 28.Rfe1 Qf6 29.Re2 Qg6–+; 27.Nf3?! Bg4 28.Bd5 Kh7+/–; 27.Bf3?! g4 28.Bg2 Nf6+–) 27...ed4 28.Bg6 Qf6 29.Be4 g4 30.Rce1 Qh6 31.Nf3 gf3 32.Qd1?? (32.Bd4 Qh3 33.Bf3 Rf3 34.Bg7–+) 32...Bg4 (32...Ne5 33.Bh7 Qh7 34.Re5 Be5 35.Re1 Bg3 36.fg3 f2 37.Kf1 Qh3 38.Ke2 f1N 39.Rf1 Qg2 40.Ke1 Rf1) 33.Bd5 Kh8 34.Bf3 (34.Re8 Re8 35.Bf3 Bf3 36.Qf3–+) 34...Bf3 35.Qf3 Rf3 36.Re4 Nf6 (better is 36...Qd2 37.Bd4 Bd4 38.Rd4 Rd3 39.Rh4 Kg7 40.Rg4 Kf6 41.Rf4 Ke5 42.Rh4–+) 37.Rh4 Nh5 0–1. sacaniev – tamikan, kurnik, 2013.

4.Bg2 e5= 5.d3 Ne7 6.Nf3 0–0 7.Nbd2 c6 8.0–0 d5 9.a3 Bg4 10.c4 Bf3 11.ef3 dc4 (11...a5 12.Qe2=) 12.Nc4 Nd7 13.Qb3 Kh8 (13...Nd5!?+=) 14.Nd6+/– Nd5 15.f4 (15.Nb7 Qc7 16.Na5 Rab8+–) 15...N7b6 (better is 15...Qc7 16.Nb5 A) worse is 16...cb5 17.Qd5 (17.Bd5?! gf4 18.gf4 Nb6=) 17...Nb6 18.Qb5+/–; B) 16...Qb6 17.Bd5 Qb5+=) 16.Ne4?? (better is 16.Nb7 Qc8 17.Nd6+–) 16...ef4 17.Rfd1 (17.Nc5 Rf7=) 17...fg3 18.hg3 Ne7 (18...Qe7!?+=) 19.Nc5= Qc8 20.a4 Nbd5 21.b5 Nb6 22.a5 Nd7 23.Ne6 Rg8 24.Re1 Nd5? 25.Rac1 Ne5 26.Bd5 h5 27.bc6 bc6 28.Be5 fe5 29.Bc6 Rb8 30.Qd5 Qa6 31.Ng7 Rg7 32.Qe5 Qd3 33.Be4 Qd8 34.Red1 Qe8+– 35.Qe8 (35.Qe8 Re8 36.f3+–) 1–0. giorgo – teodozz, kurnik, 2013.

4.Bg2 e6 5.d3 Ne7 6.Nd2 0–0 7.Ngf3 c6 8.0–0 d5 9.c4 dc4 10.Nc4 h6 11.a3 f5 12.Qb3 Bb2 13.Qb2 Rf7 14.Nce5 Rg7 15.Nd4 Nd7?? (15...Ng6 16.Ng6 Rg6 17.b5+/–) 16.Nd7 (better is 16.Ne6 Qe8 17.Ng7+–) 16...Qd7 17.Rfd1 a5 18.b5 cb5 19.Nb5 Nd5 20.Nc3 Nc3 21.Qc3 f4 22.Rdc1 h5 23.Be4 fg3 24.hg3 Re7 25.Qf6 Rg7 26.Qh6 Rb8 27.Qh5 e5 28.Rc3 Qf7 29.Qf7 Rf7 30.Rac1 Be6 31.Rc5 b6 32.Re5 Bd7 33.Rg5 Kf8 34.Kg2 b5 35.Rh5 b4 36.Rh8 Ke7 37.Rb8 ba3 38.Ra8 a4 39.Ra1 Rf6 40.Ra3 Rb6 41.Kf3 Be8 42.Ra7 Kd6 43.Ke3 Ke5 44.f4 Kd6 45.g4 Kc5 46.f5 Kb4 47.Ra1 Kc3 48.g5 Rb5 49.g6 Rf5 50.Bf5 (50.Bf5 Kb2 51.g7 Bf7 52.R1a4 Bd5 53.Rb4 Kc1 54.Rc7 Bc6 55.Rc6 Kd1 56.Rb1#) 1–0. linakip – darccol, kurnik, 2011.

4.Bg2 h5 5.d3 d6 6.e4 h4 7.Nd2 hg3 8.fg3 Nh6 9.Ngf3 Ng4 10.0–0 Ne3 11.Qe2 Nf1 12.Rf1 Bh3 13.c3 Bg2 14.Qg2 Qd7 15.Nc4 Nc6 16.a3 Ne5 17.Nce5 de5 (17...fe5?! 18.Ng5 a5 19.Bc1+=) 18.Rd1 b6 19.Qe2 g4 20.Nh4 Bh6 21.Nf5 e6 22.Ne3 f5 23.ef5 ef5 24.Nc4 Rc8 25.Qe5 Qe7?? (25...Kf7 26.Qh8 Be3 27.Kf1 Rh8 28.Ne5 Ke7 29.Nd7 Rh2 30.Nb6 Rf2 31.Ke1 Bb6 32.Bc1+=) 26.Qe7 (better is 26.Qh8 Bf8 27.Ne5+–) 26...Ke7= 27.Re1 Kd7 28.Ne5 Ke8 29.Nc6 Kf7 30.Ne5 Kf6 31.Nd7 Kg6 32.Ne5 Kh5 33.c4 Rhe8 34.d4 1–0. linakip – kano56, kurnik, 2011.

4.Bg2 h6 5.d3 c6 6.Nd2 b5 (6...d6 7.e4+=) 7.a3 Bb7 8.Ngf3 d6 9.0–0 Nd7 (9...a5 10.Nd4 Qd7 11.e4+=) 10.c4 Qc7 (10...Qb6 11.Nd4 f5 12.e3+/–) 11.cb5 (better is 11.Nd4!? Qb6 12.Ne6+–) 11...cb5+/– 12.Nb3 e5 13.Na5 Ne7? (better is 13...d5+/–) 14.Rc1+– Qb6 15.Qb3?? (better is 15.Nb7 Qb7 16.Ng5+–) 15...Bd5= 16.Qc2 0–0 17.Ne1 Rac8?? 18.Qd2?? Nf5?? 19.Bd5+– Kh8 20.Bg2 h5 21.Be4 Nd4 22.Bd4 Qd4 23.e3 Qb6 24.Qa2 Rc1+= 25.Nc2 Rf1 26.Kf1 f5 27.Bd5 h4 28.Kg2 hg3 29.hg3 f4 30.ef4 gf4–+ 31.Be4?? fg3 32.f3 Nf6 33.Ne1–+ Ne4 34.de4 Qd4 35.Nc6 Qc3 36.Qe2 Qc6 37.Nd3 Qc3 38.Ne1 Qa3 39.Qb5 Qb2 40.Kg3 Rg8 41.Qf1 Bh6 42.Kh3 Bf4 43.Ng2 d5 44.ed5 e4 45.fe4 Qc3 46.Kh4 Qh3 47.Kh3+– Be5 48.Qf5 Bg7 49.Qg5 Rf8+– 50.Qh5 Kg8 51.Qg4 Rf3 52.Qf3 Kh8 53.Qh5 Kg8 (53...Kg8 54.d6 Bd4 55.Qg6 Kf8 56.Nf4 Bg7 57.Ne6 Kg8 58.Qg7) 0–1. giorgo – zastupca, kurnik, 2013.

4.Bg2 Nh6 5.d3 0–0 6.Nf3 c6 7.Qc1 b5 8.Nbd2 Ba6 9.a3 d6 10.0–0 Nd7 11.c4 bc4 12.Nc4 (12.dc4?! e5+=) 12...d5 13.Na5 Ne5 14.Nc6 Nc6 15.Qc6 Bb7?? (15...Qd6 16.Qd6 ed6+–) 16.Qb7 Nf5 17.Qb5 Rb8 18.Qa4 Nd6 19.Rfc1 f5 20.Bg7 Rc8 (20...Kg7 21.Ng5 Rf6 22.Bd5 Nb5+–) 21.Bf8 Kf8 22.Ng5 Rc1 23.Rc1 Nf7 24.Ne6 Kg8 25.Nd8 Nd8 26.Qe8 Kg7 27.Qe7 Kg6 (27...Nf7 28.Rc7 Kg6 29.Qf7 Kg5 30.Qg7 Kh5 31.Bf3#) 28.Qd6 (28.Rc7 Nf7 29.Qf7 Kg5 30.Qg7 Kh5 31.Bf3#) 28...Kf7 (28...Kg7 29.Rc7 Nf7 30.Qe6 Kh8 31.Qf7 f4 32.Qh7#) 29.Rc7 Ke8 30.Qd7 (30.Qe7#) 30...Kf8 31.Qd8# 1–0. linakip (1610) – party001, kurnik, 2011.

3.g3 h5

4.Bg2 c6 5.a3 d5 6.c3 e5 7.f4 gf4 8.gf4 ef4 9.Nf3 Bd6 10.Qc2 Ne7 11.h4 Bf5 12.d3 c5 13.Nbd2 c4 14.Nd4 cd3 15.ed3 Bg4 16.N2f3 Nf5 17.Nf5 Bf5 18.0–0–0 Nc6 19.Kb1 Kd7 20.Qd2 Qc7 21.Nd4 Nd4 22.cd4 Be6 23.Rc1 Qb6 24.Qc3 Rac8 25.Qd2 Rc1 26.Rc1 Rc8 27.Bf3 Rc1 28.Qc1 Qc6 29.Bh5 Qc1 30.Kc1 Bf5 31.Bf3 Bd3 32.Bd5 f5 33.Bb7 Be4 34.Ba6 f3 35.Bf1 Bg3 36.Kd2 Bh4 37.Ke3 Bg5 38.Kf2 Kd6 39.b5 Bf6 40.a4 Kd5 41.Ke3 Bg5 42.Kf2 f4 43.a5 Bf6 44.b6 ab6 45.ab6 Bd4 46.Bd4 Kd4 47.Bh3 Kc5 0–1. anonimalk – divaka1, kurnik, 2014.

4.Bg2 Nc6 5.a3 d6 6.Nf3 Bd7 7.d3 (7.Ng5!? e5 8.Nf3+/–) 7...e5+= 8.Nbd2 Qe7 9.0–0 Bg7 10.e4 Nh6 11.Nb3 0–0 (11...0–0–0 12.Bc1=) 12.b5 Nd8 13.a4 Kh7 14.c4 g4 15.Nh4 f5 16.ef5 Bf5 17.Nf5 Nf5 18.Be4 Kh8 19.Bc1 Nd4 (19...Bh6 20.Bh6 Nh6 21.f4+/–) 20.Nd4 ed4 21.Bd2 Ne6 (better is 21...a6+/–) 22.Qc1?? (22.Bb7 Rab8 23.Bd5 Ng5+–) 22...h4?? (22...Nc5 23.Qc2=) 23.Re1 (23.Bb7 Rab8 24.Bd5 Nc5+–) 23...h3?? (23...Qf7 24.Re2 (24.gh4? Qf2 25.Kh1 Be5–+) 24...Nc5 A) 25.gh4? Ne4 26.Re4 Qf2 27.Kh1 Be5 (27...Qh4?! 28.Qg1=) 28.Re5 de5–+; B) 25.Qf1=) 24.Bh1 (24.Bb7 Qf6 25.Rf1+– (25.Ba8?? Qf2 26.Kh1 Ra8–+)) 24...Qf6 25.Qd1?? (better is 25.Rf1 Nc5 26.Ra3=) 25…Qf2 0–1. giorgo – pawerulerule, kurnik, 2013.

4.Bg2 Nc6 5.a3 d6 6.Nf3 e5 7.h4=.

4.Bg2 Nc6 5.a3 d6 6.Nf3 g4 7.Nd4 Nd4 8.Bd4 c6 9.0–0 Bf5 10.d3 Qd7 11.c4 0–0–0 12.Nd2 h4 13.e4 Be6 14.Ba7 hg3 15.hg3 Bg7 16.Bb6 Rf8?? (16...Qe8 17.Qa4 Kd7 18.Bd8+–) 17.d4 (17.Qa4 Qc7 18.Bc7 Kc7+–) 17...f5?? (17...Qe8 18.Qa4 Kd7 19.d5+–) 18.Qc2 Bd4 19.Bd4 Nf6 20.Rae1 Qe8 21.Bf6 Rf6 22.ef5 Qh5 23.f3 Bf5 24.Qd1?? Qh2= 25.Kf2 gf3 26.Nf3 Bh3 27.Rg1 e5 28.Qd2 e4 29.Qg5 (29.Qg5 Rf3 30.Ke2 Rg3 31.Qg3 Qg3 32.Be4 Bg4 33.Kd2 Qf2 34.Kc1–+) 1–0. linakip – radpo, kurnik, 2012.

4.Bg2 d5 5.a3 Nc6 6.d3 b6 (6...e5!?=) 7.Nd2 (7.c4 e6+/–) 7...Bb7 8.c4 Ne5 (8...e6 9.h4 g4 10.Qa4+=) 9.cd5 Bd5 10.Be5?? (better is 10.Be4 Be4 11.Ne4+/–) 10...Bg2–+ 11.Bd4 (11.Qc2 Rc8 (11...fe5?! 12.Ngf3 Rh6 13.Rg1 Bf3 14.Nf3–+) 12.Ne4 Bh1–+ (12...fe5?! 13.Qc6 Qd7 14.Qg6 Kd8 15.Ng5–/+)) 11...Bh1 (worse is 11...Qd4 12.Ngf3 Qc3 13.Rg1 Bf3 14.ef3–+) 12.Qb3 (12.Qa4 Qd7 13.Qd7 Kd7–+) 12...Bb7 (12...Qd4!? 13.Rc1–+) 13.Rc1 (13.Qc3 h4 14.gh4 Rh4–+) 13...Qd5 (better is 13...Qd4 14.Rc7 Rc8 15.Rc8 Bc8 16.Ngf3 Qa1 17.Nb1–+) 14.Qc3 (14.Qd5 Bd5 15.e4–+) 14...0–0–0 (better is 14...e5 15.Be3 Qg2 16.f3–+) 15.Ngf3 (15.Qc7) 15...e5 (15...c6 16.Nc4 Qb5 17.a4–+) 16.Be3 (16.Qc7) 16...Ne7 (better is 16...Rh7–+) 17.Qc7 1–0. giorgo – dodo99, kurnik, 2013.

4.Bg2 d5 5.e3 Nc6+= 6.b5 Ne5 7.Nf3 (7.Nc3 e6+=) 7...Bg4 (7...Nc4 8.Bc1 e5=) 8.0–0 (8.h3 Nf3 9.Bf3 Bf3 10.Qf3 h4+=) 8...Qd7 (8...h4 9.Be5 h3 10.Bf6 Nf6 11.Bh1=+) 9.a4 (9.Ne5!? fe5 10.f3+–) 9...Qf5 (9...Nc4 10.Bc1=) 10.Be5 (10.Nd4!? Bd1 11.Nf5 Nf3 12.Kh1 Bc2 13.Ne7 Be7 14.Bf3+=) 10...fe5= 11.d3 h4 12.Nbd2 (12.e4 de4 13.de4 Qf6=) 12...hg3 (12...h3!? 13.Bh1 0–0–0=+) 13.fg3= (worse 13.hg3 Qh7 14.Re1 e4 15.de4 de4 16.Ne4 Qe4 17.Ng5 A) 17...Bd1? 18.Be4 (worse 18.Ne4 Bg4–/+) 18...Bh5 19.Bb7+–; B) 17...Qf5–/+) 13...Qh7? (better 13...Nf6 14.e4 de4 15.Ne4 e6 16.Nf6 Qf6+=) 14.Ng5?? (14.h3 Bf3 15.Nf3+– (15.Rf3?! Nf6+=; worse 15.Bf3 Qh3 16.Kf2 Qe6=+)) 14...Bd1 (better 14...Qh2 15.Kf2 Bd1 16.Rad1 Qh6 17.Bd5 Qg5–+) 15.Nh7+– Rh7 16.Rad1 (16.Bd5!? Bg4 17.Bg8 Rh8 18.Bf7 Kd7+–) 16...e6 (16...Nf6 17.Rf5+–) 17.c4+– Bc5 (17...Rd8 18.Nf3 Bh6 19.Rfe1+–) 18.Rf3 (18.cd5 Be3 19.Kh1 ed5 20.Bd5 0–0–0 21.Be6 Kb8+–) 18...e4? (better 18...a6+–) 19.de4+– de4 (19...dc4 20.Nc4 a6 21.Na5+–) 20.Ne4 Be7 21.Nc3 (21.Rff1 Rd8+–) 21...Bd6 (21...Nf6+–) 22.Ne4 Ke7?? (22...Be7 23.Rff1 Rd8+–) 23.Nd6 cd6 24.Rdf1 (better 24.Rf4!? e5 25.Rf2 Rc8 26.Bb7 Rc4+–) 24...Rc8 25.Rc1 (25.Rf4 b6+–) 25...d5 (25...Nf6 26.Rf4 b6 27.Bc6+–) 26.Rf4 (better 26.Rff1 dc4 27.Be4+–) 26...Rf7? (26...Nh6+–) 27.Rf7 Kf7 28.Rf1 Ke7 29.cd5 b6 (29...Rc7 30.h4+–) 30.de6 (better 30.Bh3!? Rc4 31.Be6 Nf6+–) 30...Ke6 (30...Nf6+–) 31.Bh3 (31.Bh3 Kd5 32.Bc8+–) 1–0. retiponziani (1940) – Castlegrande, ChessWorld.net, 2015.

4.Bg2 Nh6 5.Nc3 c6 6.a3 Qb6 7.Na4 Qa6 8.c3 d6 9.Bc1 Nf5 10.Nf3 g4 11.Ng1 Nd7 12.d3 Nb6 13.Nb2 Nd5 (better is 13...e5=) 14.e4+/– Nc3 15.Qc2 Ne4 16.de4 (16.Be4?! d5 17.Bf5 Bf5+=) 16...Nd4 17.Qd3?? (17.Qd1!? Nb5 18.a4 Nc3+–) 17...e5 (better is 17...Qd3 18.Nd3 Nc2 19.Ke2 Na1–+) 18.Qa6+/– ba6 19.Kd2?? (better is 19.Rb1+/–) 19...Nb3–+ 20.Kc2? (20.Kc3 Na1 21.Nc4–+) 20...Na1 21.Kc3 a5! 22.Nd3 (22.ba5 Rb8 Combination) 22...ab4 (22...Be6 23.h3 ab4 24.ab4–+) 23.Nb4 (23.Kb2 ba3 24.Ka1 h4 25.gh4 Rb8–+) 23...c5 24.Nd5 Kd7 (better is 24...Rb8 25.f4 ef4 26.gf4 f5–+) 25.Kb2 Rb8 26.Ka1 Ba6 27.Bb2? (better is 27.Nf6!? Ke6 28.Nd5+=) 27...Bd3 28.f3 Bg7 29.Nc3 Bh6 30.h3 Bd2 31.fg4?? (better is 31.Nd5 Rb7 32.Rh2–/+) 31...Bc3–+ 32.Bc3 Rb1 33.Ka2 hg4 34.h4 Kc6 35.Bb2 Kb5 36.Ne2–+ Rh1 37.Nc3 Kc4 38.Bh1 Rb8 39.Bg2 1–0. giorgo – radpo, kurnik, 2012.

3.h4 g4

4.e4 d5 5.ed5 Qd5+=.

4.h5 Bg7 5.e3 d6 6.Be2 Nc6 (better is 6...Nh6!?=) 7.b5+/– Ne5 8.Be5 fe5 9.Bg4 Bg4 (9...e4!? 10.Bc8 Qc8+=) 10.Qg4+/– Bf6 11.e4 Qd7 12.Qd7 Kd7 13.Nc3 e6 14.a4 b6 15.a5 Ne7 16.ab6 ab6 17.Ra8 Ra8 18.Nge2 (18.Rh3!?+/–) 18...Ra1= 19.Nd1 Rb1 (better is 19...Ra2!?=) 20.c4+/– Ra1 21.0–0 (21.Nec3 c6+/–) 21...Bg5 (21...Ra2 22.Ndc3 Rd2 23.Ra1+=) 22.Ne3 Rf1 23.Kf1 Be3 24.fe3 d5 25.d3 (25.cd5 ed5 26.Kf2 de4+/–) 25...c6 (25...dc4!? 26.dc4 Kd6=) 26.bc6 Kc6 27.ed5 ed5 28.cd5 Nd5 29.e4 Nf6 30.Kf2 Nh5 31.Kf3 Nf6 32.g4 h6 33.Ng3 b5–/+ 34.Ne2 Kc5–+ 35.Kg3 b4 36.Nc1 Kd4 37.Kh4 Ke3 38.g5 hg5 39.Kg5 Nd7 40.Kf5 Kd2 41.Nb3 Kc3 42.Na5 Kd3 43.Ke6 Nc5 44.Ke5 Ne4 45.Kd5 Nd2 46.Kc5 Kc3 47.Kb5 Nb3?? 48.Nc4?? Nd4–+ 49.Kc5 b3 50.Kd5 Nf3 51.Kc5?? Nd2 52.Na3 b2 53.Kb5 Kb3 0–1. swislina – fjanusz52, kurnik, 2013.

4.h5 Nh6 5.a4 (5.e4 e6=) 5...Nc6 (Better is 5...d5!?=+) 6.b5+= Nb4? (6...Na5 7.e4=) 7.Ba3 (Better is 7.e4!? g3 8.Nh3+–) 7...c5 8.c3 Nd5 9.Bc5 e6 (9...Qc7 10.Ba3=) 10.Bd4 e5 11.Be3 Ne3–/+ 12.de3 Qa5 13.Qd5 a6 14.g3 Bb4?? 15.Nd2?? Bc3–/+ 16.Rd1 Qa4 17.ba6 Ra6 18.Bg2 Ra5 19.Rc1?? Rd5–+ 20.Rc3 0–0 21.Bd5–+ Nf7 22.Kf1?? Qd1 23.Kg2 Qd2 24.Rb3 Qd5 25.Kh2 Qb3 26.e4 b5 27.Kg2 b4 28.Rh4 d6 29.Rg4 Bg4 30.f3 Bh5 31.g4 Bg6 32.Nh3 Qc2 33.f4 b3 34.fe5 b2 35.ef6 b1Q 36.Nf4 Qe4 37.Kh3 Qf4 38.e3 Qf6 0–1. Balzamo – dragonslayer12, Live Game Caissa's Web, 2004.

3.h4 gh4

4.e3 Nc6 5.Qh5# 1–0. guest111 – guest180, ICC, 2002.

4.e4 Nh6 +/–.

4.Rh4 d6 5.e3 Bf5 6.Bc4 Nc6+= 7.a3 Ne5 8.Bb3 Qd7 9.f4 Ng6= 10.Rh5?? 0–0–0 11.Nf3=+ Bg4 12.Rh2 h5 13.Qe2 Bg7 14.Nc3 Nh6 15.0–0–0 Rhg8 16.Bg8+/– Rg8 17.Qd3 Bf5 18.Qc4 Nf8? 19.Rh5+– Be6 20.Qb5 c6 21.Qe2 Nf5 22.g4?? Ng3+= 23.Qh2 Nh5 24.gh5 Bg4 25.Rf1 Rh8 26.Ne4 Rh5 27.Qg3 Rh3=+ 28.Qg2 f5 29.Neg5 Bb2= 30.Kb2 Rh6 31.Nd4 e5 32.Nb3?? ef4 33.Rf4 Ne6?? 34.Ne6= Qe6 35.Kb1 Qd5 36.Qd5+/– cd5 37.Nd4 Rf6 38.Kb2 Kd7 39.Kc3 a6 40.a4 Rf8 41.b5 ab5 42.ab5 Rc8 43.Kb4 b6 44.c3 Re8 45.Nf5+– Re4 46.Re4 de4+= 47.Ng3 Bf3? 48.Kc4+– Ke6 49.Kd4 d5 50.c4 dc4 51.Ne4 Be2 52.Nc3 Bd3 53.Na4 Kd7 54.Nb6 Kc7 55.Nc4 Be2 56.d3 Kb7 57.e4 Kc7 58.e5 Kd7 59.Ke4 Ke6 60.Kd4 Kd7 61.Nd6 Kc7 62.Ne4 Kb6 63.e6 Kb5 64.Nc3 Kc6 65.Ne2 Kd6 66.Nf4 Ke7 67.Ke5 (67...Ke8 68.Nd5 Kf8 69.e7 Kf7 70.Kd6 Ke8 71.Nc7 Kf7 72.e8Q Kf6 73.Qg8 Kf5 74.Ne6 Kf6 75.Qg7 Kf5 76.Qg5#) 1–0. Eralos (2025) – jorgeaurelio (1925), ajedrez21.com, 2003.

4.Rh4 Nh6 5.e4 Nf7 6.a3+=.

2.Bb2 Nf6

3.a3 Bh6 4.g3 (4.Nf3 d6+=) 4...g4 (4...d5 5.Bg2=) 5.Bg2 (5.h3 gh3 6.Bf6 ef6 7.Bh3 f5+/–) 5...Rg8 (5...Bg7 6.h3=) 6.e3 (6.Bf6 ef6 7.h3 f5 8.hg4 Bg7+/–) 6...Rg5 (6...Bg7 7.Ne2=) 7.Ne2 (7.Bf6 ef6 8.h3 f5+/–) 7...Nd5? (7...Bg7!?=) 8.c4 (better is 8.h3 Nb6 9.hg4+/–) 8...Rf5?? (better is 8...Nb6 9.Qc2 d5 10.Qh7 Bf8 11.cd5 Nd5+/–) 9.cd5 b5 (9...d6 10.Qc2+–) 10.Qc2 Rd5 11.Qh7 Rh5 12.Qh8 Bf8 13.Qh5 Bb7 14.Bb7 Nc6 15.Qg4 e5 16.Bc6 dc6 17.Be5 f6 18.Qe6 Be7 19.Qc6 Kf7 20.Bb2 Rb8 21.0–0 Qd2 22.Nd2 Rd8 23.Ne4 f5 24.Nc5 Rd2 25.Qe6 Ke8 26.Bf6 Re2 27.Qd7 Kf7 28.Qe7 Kg8 29.Qg7 1–0. Trkn – Kazza, itsyourturn.com, 2000.

3.a4 e6 4.e3 (4.b5 d6=) 4...a6 (4...Bb4!? 5.Nf3 Rg8+=) 5.Nf3 h6 6.h4 g4 (6...Bb4? 7.hg5 Be7 8.gf6 Bf6 9.Bf6 Qf6 10.d4+–) 7.Ng1 (7.Ne5 A) 7...Bb4? 8.Ng4 Be7 9.Qf3 Ng4 10.Bh8+– (10.Qg4?! Bf6 11.Bf6 Qf6=); B) 7...Rg8=) 7...h5 (7...Bb4 8.e4 d6 9.Bf6 Qf6 10.c3–/+) 8.g3 (8.b5 d5+=) 8...Bg7 (8...Bb4!? 9.Ne2 d5–/+) 9.Bg2 0–0 10.d3 (10.Ne2 d5=) 10...d6 11.Nd2 (11.Ne2 Nc6=) 11...Nbd7 (11...Nc6!?+=) 12.Ne2= e5 13.0–0 c6 14.c4 Nb6 (14...d5 15.a5+=) 15.Qc2 d5? (15...a5 16.b5 cb5 17.ab5+=) 16.a5 (better is 16.Be5!? Re8 17.Bc3+/–) 16...Nbd7+= 17.c5 Re8 18.e4 d4 19.Nc4 Bf8 20.Bc1 Be7 21.Bg5 Nf8 22.Qd2 N8h7 23.Bf6 Bf6 24.Qh6 Bg7 25.Qh5 Re6 26.Qg4?? Rg6–+ 27.Qf3? Bg4 28.Qg4 Rg4 29.Bh3 Rg6 30.Nd6 Rd6 31.cd6 Qd6 32.Rab1 Rf8 33.Bf5 Nf6 0–1. rom49szachy – milanio, playok.com, 2012.

3.b5 d6 4.c4 e5 5.Nf3 h6 6.e3 Bg4 7.Be2 Bg7 8.h3 Bh5 9.d4 e4 10.Nfd2 Be2 11.Qe2 d5 (11...a6!?=) 12.cd5+/– Qd5 13.Nc3 Qf5 14.0–0 0–0 15.f4 g4 (15...Re8+=) 16.h4 (better is 16.hg4!? Ng4 17.Nce4+/– (worse is 17.Nde4 Qh5 18.g3 f5+=)) 16...Re8 17.g3 (17.Nc4 Qh5 18.Qf2 a6=) 17...Nbd7+= 18.a4 Nb6 19.Ba3 (19.a5 Nbd5=) 19...Nbd5 20.Nd5 Nd5 21.Qc4?? (better is 21.Nc4+=) 21...Ne3–+ 22.Qc7 Nf1 23.Kf1 (23.Rf1 e3 24.Nb1–+) 23...e3 24.Nc4 e2 (24...Qc2 25.Kg1 e2 26.Ne5 Qc7 27.Bc5–+) 25.Ke1 Bd4 26.Nd6 Ba1 27.Nf5+– Rad8 28.Nh6 Kg7? 29.Qf7 Kh6 30.Bf8?? Rf8–+ 31.Qe6 Kh7 32.Qg4 Rd1 33.Kf2?? e1Q (33...e1Q 34.Kf3 Qf1 35.Ke3 Re8 36.Qe6 Re6) 0–1. olawoj – ap47, playok.com, 2012.

3.d3 e6 4.a3 Nc6 (4...Bg7 5.e3=) 5.b5+= Nb8 6.Nd2 Bc5 (6...Bg7 7.e4+=) 7.e4 Be7 8.e5 Nd5 9.Ne4 Rg8 (9...a6 10.c4 Nf4 11.Ne2+=) 10.Qh5+/– Rh8 (10...c6 11.Qh7 Rf8 12.Qg7+/–) 11.g3 (11.Nh3 Nf4 12.Nf4 gf4+/–) 11...h6 12.Nf3 Kf8 (12...Rg8 13.h3 Rg6 14.h4+/–) 13.h4 (13.c4 Nb6+–) 13...gh4 14.Bc1 (14.c4 Nb6 15.gh4 a6+–) 14...hg3 (14...Ke8 15.c4 Nb6+–) 15.Bh6 Ke8 16.fg3 (16.Nfg5 gf2 17.Kf2 Bg5 18.Bg5 Rh5 19.Rh5 Qg5 20.Rh8 Ke7 21.Ng5 Nb6+–) 16...Bf8 17.Bg5 Rh5 18.Rh5 Ne3 19.Ke2 Nf1 20.Bd8 d5 21.Nf6 Kd8 22.Rf1 c5 23.Rh8 b6 24.Rf8 Kc7 25.Ne8 Kd7 26.Nd6 a6 27.Rc8 ab5 28.Rh1 (28.Rh1 Ra7 29.Rh7 Nc6 30.Rf7 Ne7 31.Nh4 Rc7 32.Ng6 Rc8 33.Re7 Kc6 34.Nc8 c4 35.d4 b4 36.Na7; 28.Ng5 f6 29.Rf6 Nc6 30.Rf7 Ne7 31.Re7 Ke7 32.Rc7 Kf8 33.Ne6 Kg8 34.Rg7 Kh8 35.Nf7) 1–0. Kosik,J – Dominiak,W, corr, 1996.

3.d4 d5 4.Nf3 b5 (4...g4!? 5.Ne5 Bf5=) 5.Ng5+= Bh6 6.Bc1+/– Rg8? 7.Nf7!+– Kf7 8.Bh6 Rg6 9.Bf4 Nc6 10.c3 Rg4 11.e3 a5 12.f3 Rg7 13.Bb5 Na7 14.Bf1 1–0. Wall,Bill – Guest7649, Internet, 2004.

3.d4 Bg7 4.d5 d6 5.Nf3 g4 6.Nd4 Nd5–/+ 7.Qd2 0–0 8.h3 g3 9.f3? c5–+ 10.bc5 dc5 11.Qg5 cd4 12.Bd4 e5 13.Bb2 Qg5 (14.Na3 Qe3–+) 0–1. Tricky.1 – marekt, ChessWorld.net, 2005.

3.e3 a5 4.b5 c6 (4...Bg7 5.Nf3+=) 5.a4 (5.Be2 Bg7+=) 5...cb5 (5...Bg7 6.Be2=) 6.ab5 (6.Bb5 Nc6+–) 6...b6 (6...Bg7 7.Be2=) 7.Be2 (7.Nf3 h6+–) 7...Bb7 (7...Bg7 8.Nf3+=) 8.Nf3 g4 9.Nh4 Ne4?? (better 9...h5+=) 10.Bh8+– e6 11.g3 Ng3 12.hg3 Bh1 13.Bg4 d5 14.Kf1 (14.Nf3 Bd6+–) 14...Be7 15.Nf3 Bf6 (15...a4 16.Kg1 Bf3 17.Bf3+–) 16.Bf6 Qf6 17.Nd4 Be4 18.d3 Bg6 19.Kg2 (19.Nc3 Nd7+–) 19...Nd7 20.f4 Rc8 21.Nd2 Kf8 22.Qh1 Kg8 (22...Ke8 23.Bf3+–) 23.N2f3 (23.Rf1 Ra8+–) 23...Ra8 24.Ng5 (24.Nh4 h6+–) 24...Nc5 25.Ngf3 (25.Bh5 a4+–) 25...Nd7 26.Ng5 (26.Nh4 h6+–) 26...Nc5 27.Bh5 e5 28.Bg6 Qg6 29.Nc6 Re8 30.Kf2 (30.Ne5?! Re5 31.fe5 Qg5+–) 30...Nd7 (30...e4 31.d4 Nd7 32.Qh3+–) 31.Qd5 Nf6 32.Qf3 h5 33.e4 Ng4 34.Kg2 Qf6 35.Rh1 Qg6 36.Nh3 f5 (36...Qg7 37.Nf2 ef4 38.Qf4+–) 37.Re1 ef4 38.Nf4 Qf7 (38...Qg5 39.e5 h4 40.gh4+–) 39.e5 h4 40.gh4 a4 (40...Kh7 41.Nd5+–) 41.Nd5 a3 42.d4 Ra8 (42...a2 43.Ra1 Kg7 44.c4+–) 43.Nb6 a2 (43...Re8+–) 44.Na8 1–0. DEFFM – GuestHPJL, freechess.org, 2018.

3.e3 Nc6 4.b5 Nb4? (4...Nb8 5.h4 gh4 6.Bf6 ef6 7.Nf3+=) 5.a3 (Better is 5.e4+–) 5...Nbd5+= 6.c4 d6?? (Better is 6...Nb6+=) 7.cd5+– Nd5 8.Bh8 f6 9.Nc3 Be6 10.Be2 Nc3 11.dc3 Qd7 12.Bf3 0–0–0 13.a4 Bh6 14.Bf6 ef6 15.Qd4 Kb8 16.Ne2 c6 17.bc6 bc6 18.Rb1 Kc8 19.Qb4 Qc7 20.0–0 Bf5 21.Rb2 d5 22.Bg4 Bd7 23.Bd7 Rd7 24.Nd4 c5 25.Qa3 cd4 26.cd4 Kd8 27.Rbb1 Ke8 28.Rfc1 Qd8 29.Rc2 Kf7 30.Rcb2 Bf8 31.Qd3 Bd6 32.Qh7 Ke6 33.Qh3 f5 34.g3 Qf6 35.Rb7 Qg7 36.Rd7 Qd7 37.Qh6 Kf7 38.Qh7 Ke8 39.Qd7 Kd7 40.h4 gh4 41.gh4 Bf8 42.Rb7 Kc6 43.Ra7 Bd6 44.h5 (44...Bf8 45.Rf7+–) 1–0. valpa – waller, playchess.de, 2003.

3.e3 Bh6 4.Nc3 (4.h4 gh4 5.Bf6 ef6 6.Rh4 Bf8+= 7.Nf3+=) 4...e5 (4...d6 5.Bb5 c6 6.Be2 Bg7 7.h3=; 4...d5 5.Nf3 a5 6.ba5 Ra5 7.Be2+=) 5.Nf3 d6 (5...Qe7 6.Rb1 d6 7.h3=) 6.h4 (better is 6.h3= 0–0 7.e4=; 6.Bb5 c6 7.Be2=) 6...Qe7?? (6...g4 7.Ng5 Bg7 8.Bb5 c6–/+) 7.hg5+– Bg7 (7...Bg5 8.Ng5 c6 9.d4+–) 8.gf6 Qf6 9.Nd5 Qd8 10.c4 c6 11.Nf4 ef4 12.Bg7 Rg8 13.Bc3 Qd7 14.Rh6 d5 15.Ne5 Qf5 16.Bd3 Qg5 17.Rh7 Qg2 18.Qh5 Bg4 19.Qf7 Kd8 20.Qg8 1–0. pierre – nails7696, internet, 2008.

3.e4 b5? 4.e5+– Ne4?? (better is 4...Nd5 5.e6 Nf6 6.ef7 Kf7+–) 5.Qf3 (5.Bb5?! c6 6.Qe2 Bg7 7.Qe4 d5+–) 5...Bg7 6.Qe4 Bb7 7.Qb7 Na6 8.Qa6 Rb8 9.Qa7 c5 10.bc5 b4 11.Nh3 Bh6 12.e6! Rg8 13.ed7 Kf8 14.c6 Ra8 15.c7 Ra7 16.cd8Q# (16.cd8R#) 1–0. pierre – poqupi, internet, 2010.

3.Nf3 Rg8 4.Nc3 (4.h3 d5=) 4...g4 5.Ne5 b6 (5...Bg7 6.e4=) 6.e4+= Bb7 7.Bc4 (7.Bd3 Rg5 8.Nc4 e6=) 7...e6 8.0–0 (8.b5!?=) 8...Bb4–/+ (8...Ne4?! 9.Ne4 Be4 10.Re1=; worse is 8...Be4 9.Ne4 Ne4 10.Re1=) 9.Re1 (9.Be2 Bc3 10.Bc3 Ne4–/+) 9...h5 (9...d6!? 10.Nd3 Bc3 11.Bc3 Ne4–+) 10.f3+= Nc6 11.Nc6 (11.Nb5 Bc5 12.Kh1 Na5–/+) 11...dc6–/+ 12.Nb1 gf3 (12...Qe7 13.f4–/+) 13.Qf3+= Ng4 14.Rf1 Threatening mate... how? 14...Bc5 15.Kh1 Qe7 16.h3 Rg6 17.hg4?? hg4–+ 18.Qf4 Qh4 19.Qh2 Rh6 20.Be5 Qh2 (20...Qh2 21.Bh2 g3 22.d4 Bd4 23.Rf2 Bf2 24.Be6 Rh2) 0–1. Ziolkowski,T (1800) – Kosik,J, corr, 1996.

3.Nh3 h6 4.f4 (4.e4 d6=) 4...g4 (4...Rg8 5.e3+=) 5.Nf2= d5 6.e4 Bg7 (6...Rg8 7.Qe2 Bg7 8.e5=) 7.e5+= Nh5 8.Ng4 (8.g3 f5+=) 8...Nf4= 9.d4 c6 10.Qf3 Ne6 11.c3 (11.Bd3 Qb6 12.c3 a5=) 11...Ng5 12.Qf4 a5 13.Bd3 Ne6 (13...Qb6 14.a3=) 14.Qf2 ab4 15.cb4 Qb6 16.a3 Ng5 (16...h5 17.Ne3=) 17.Qg3 (17.Ne3 Rf8+=) 17...Rg8 (17...Na6 18.Ne3=) 18.h4 Bg4 (18...h5 19.Ne3 Ne4 20.Be4 de4 21.Qg5+/–) 19.Qg4 Ne6 20.Bh7 (20.Rf1 Rf8+=) 20...Rf8+= 21.Bf5 h5 22.Qd1 (worse is 22.Qh5 Nd4 23.Qg4 Be5–/+) 22...Rh8 23.g4 (23.Be6 fe6 24.Rf1 Kd8+/–) 23...Nf4 (23...Nf8!?+=) 24.Qf3+/– Ra3?? (better is 24...Ng6+/–) 25.Ra3+– (25.Ba3?! Qd4 26.Ra2 hg4 27.Qg4 Be5+/–; 25.Qf4?! Qb4 26.Qd2 Qd2 27.Nd2 Ra1 28.Ba1 e6+=) 25...Qa7 (25...Ne6 26.Ra8 Qd8+–) 26.Ra7 Be5 27.de5 Rh7 28.Bh7 Na6 29.Qf4 f5 30.e6 Nb4 31.Ra8 (31.Qb8) 1–0. Bonetti,Shane – Arcanum (2160), ICC, 2002.

3.a3 Bg7

4.d4 d5 5.e3 Bg4 6.Be2 Be2 7.Ne2 Ne4 8.f3 Nd6 9.Nbc3 e6 10.f4 Nc4–/+ 11.Bc1 g4 12.g3 a6 13.Rb1 c6 14.Na4 Nd7 15.Nc5 Rb8 16.h3 gh3 17.Rh3 Nd6 18.a4 Nc5 19.bc5 Ne4 20.Bd2 Qd7 21.g4 h6 22.Ng3 Ng3 23.Rg3 Qe7 24.Kf2 Qh4 25.c4 0–0 26.cd5 ed5= 27.Qh1 Qh1 28.Rh1 f5 29.gf5+/– Kh7 30.Rh5 Rf6 31.Rg1 Rbf8 32.Rb1 R8f7 33.Bc3 Rf5? 34.Rf5 Rf5 35.Rb7 Rh5 36.Rb6 Rh2 37.Ke1?? Rc2 38.Bd2 Bf6 39.Rc6 Bh4 40.Kd1 Ra2 41.Ra6 Ra1 42.Ke2 Ra2 43.a5 Bd8 44.Ra8 Bc7 45.Ra7 h5 46.Rc7 Kg6 47.Rc6 Kf5 48.Rd6 Ra5 49.Ba5 Kg4 50.c6 (50...h4 51.c7 Kg3 52.c8Q Kg2 53.Qg4 Kh2 54.Qh4 Kg2 55.Rg6) 1–0. tonycally – jimmyjf, ChessWorld.net, 2004.

4.e3 d6 5.d3 (5.d4 a5=) 5...e5 6.c4 Bf5 7.Nd2 0–0 8.Be2 Nbd7 (8...a5 9.b5=) 9.e4 Bg6 10.g4 Re8 (10...a5 11.h4 gh4 12.g5+=) 11.h3 (11.h4 h6+–) 11...Nf8 12.Ngf3 Ne6 13.h4 h6 14.h5 (better 14.Nb3!?+=) 14...Bh7=+ 15.Rg1 Nf4 16.Bf1 Qc8 17.Nh2 (17.Be2 a5=+) 17...c6 18.Rg3 d5 19.cd5 cd5 20.Rc1 Qd7 (20...Qe6 21.Qb3–/+) 21.f3 (21.Nhf3 de4 (21...Ng4?! 22.Ng5 Nf6 23.Nh7 Kh7 24.Qf3=) 22.Ne4 a5 23.ba5 Ra5–/+) 21...a6 22.Nb3 b6 23.Rc2 Qa7 (23...Rac8 24.Rc8 Qc8 25.Qd2–+) 24.Bc1 (24.Qc1 Re7–/+) 24...Rad8–+ 25.Bd2 de4 (25...Qa8 26.Rc3–/+) 26.de4–/+ Qb7 27.Qc1 (27.Rc3 Re7–/+) 27...Rc8 (27...Ne4 28.Rc7 Qc7 29.Qc7 Ng3 30.Qb6 Bc2–+ (30...Nf1?! 31.Nf1 Nd3 32.Ke2–+)) 28.Bf4? (better 28.Be3–/+) 28...ef4–+ (28...gf4?! 29.Rgg2 Ne4 A) 30.fe4?? Qe4 31.Rge2 Rc2 32.Re4 Rc1 (32...Be4?! 33.Qd1 Rh2 34.Qd7–+) 33.Nc1 Be4–+; B) 30.Rc8 Rc8 31.Rc2 Rc2 32.Qc2–+) 29.Rgg2 (29.Rh3 Be4! 30.Rc8 Rc8 31.Qd2–+) 29...Ne4! 30.Rc8 (30.fe4 Qe4 Decoy to e4) 30...Rc8 31.Rc2 Nc3 (better 31...Rc2!? 32.Qc2 Bc3 33.Kd1 Qd5 34.Kc1–+) 32.Na1 (32.Rd2 Nb1 33.Qd1 Bc3–+) 32...Bc2 33.Nc2 Re8 (better 33...Rd8 34.a4–+) 34.Kf2 Qd5 35.Ne1 (35.Kg2 Ne2 36.Qe1–+) 35...Nd1 (35...Qd4 36.Kg2 Ne2 37.Qe3 Qe3 38.Be2 Qe2 39.Kg1 Qe1 40.Nf1 Bd4 41.Kh1 Qf1 42.Kh2 Re2) 36.Kg1 Re1 (36...Qd4 37.Qe3 Qe3 38.Kg2 Qf2 39.Kh1 Bd4 40.Ba6 Qg1) 37.Qc8–+ Bf8 38.Qa6 Qd4 39.Kh1 Qf2 (39...Nf2 40.Kg1 Nh3 41.Kg2 Qf2 42.Kh3 Qg3) 40.Qd3 (40.Qb6 Qb6 41.Kg2 Qf2 42.Kh1 Qg3 43.a4 Nf2) 40...Ne3 41.a4 (41.Qe3 fe3 42.b5 e2 43.f4 ef1Q 44.Nf1 Rf1) 41…Qg2 0–1. petrobbo (1995) – vv_ali_baba (2055), ChessWorld.net, 2017.

4.e3 Rg8 5.c4 g4 6.Be2 (6.d4 d6=) 6...d5 7.cd5 Qd5 8.f3 gf3 9.Bf3 (9.Nf3 c6=) 9...Qb5 10.Qe2 Qb6 11.Nc3 Be6? (11...Nbd7 12.d4=) 12.Qb5?? (12.Na4 Qa6 13.Qa6 Na6 (13...ba6?? 14.Ba8 Bd5 15.Bd5 Nd5 16.Bg7 Rg7 17.g3+–) 14.Bb7 Bd5 15.Ba8 Ba8+–) 12...Qb5?? (better is 12...c6 13.Qb6 ab6=) 13.Nb5+– c6?! 14.Nc7 Kd8 15.Na8 Nbd7 16.Ne2 Kc8 17.Kf2 Kb8 18.Nb6! ab6 19.Nd4 Nd5 20.Rab1 Ne5 21.Ne6 fe6 22.Rhg1?? Nd3+= 23.Ke2 Nb2 24.Bd5 ed5–+ 25.d4 Nc4 26.Rb3 b5 27.Kd3 e5 28.g3 ed4 29.ed4 Re8 30.Rg2 Re3 31.Kc2 Rb3 32.Kb3 Bd4 33.Re2 Kc7 34.Re7 Kd6 35.Rh7 Bg1 36.h4 Ne5 37.Rb7 Ng4 38.Rg7= Ne3 39.h5 Nf5 40.Rg6 Ke7 41.g4 Nd6?? 42.h6+– Bd4 43.h7 Nf7 44.Rc6 1–0. Fournier,Frederic (1820) – neoshams (1675), Active (5/0), 2005.

4.e3 h6 5.c4 d6 6.Nf3 e6 7.d4 Nc6 8.Nbd2 g4 9.Nh4 Nd5?? (9...a6 10.Bd3+=) 10.g3 (Better is 10.Qg4 Qg5 11.Qg5 hg5 12.cd5 ed5 13.Nhf3+–) 10...Nf6+/– 11.Be2 h5 12.0–0 d5 13.c5 Ne4 14.Ne4 de4 15.Qc2 Bd7 16.Qe4+/– Qe7 17.b5 Na5 18.Qc2 0–0–0 19.Bc3 b6 20.c6 Bc6 21.bc6 Nc6 22.a4 Bf6 23.a5 Bh4 24.gh4 Qh4 25.ab6 cb6 26.Ba6 Kb8 27.Qe4 Rd5 28.Rfb1 f5 29.Qe6 Rhd8 30.Qc6 R5d7 31.Rb6! ab6 32.Qb6 Ka8 33.Bb5 Ra7 34.Qa7# 1–0. maxum – DOORMAN, Live Game Caissa's Web, 2004.

4.e3 h6 5.g3 d6 6.Bg2 e5 7.d4 e4 8.Ne2 d5 9.0–0 Bg4 10.Nd2 Nbd7 11.h3 Bh5 12.g4 Ng4 (Better is 12...Bg6=+) 13.hg4+/– Bg4 14.c4 dc4? (14...c6!?+/–) 15.Nc4 Qe7 16.Nd2 f5 17.f3 Bh5?? 18.fe4 fe4 19.Ne4 0–0–0 20.Nc5?? Nc5 21.bc5 Qe3 22.Rf2 Rhf8 23.Qf1 Be2?? 24.Qe2+/– Qg3? 25.Rf8+– Rf8 26.Rf1 Rf1 27.Qf1 Qf4 28.Qe2?? Kd7? 29.c6 bc6 30.Bh3 Kd8 31.Bg2?? h5?? 32.Qc4 Qe3 33.Kh1 Qe1 34.Kh2 Qd2?? 35.Qg8+– Kd7 36.Qg7 1–0. maxum – DOORMAN, Live Game Caissa's Web, 2004.

3.b5 Bg7

4.a4 Nh5 5.Bg7 Ng7 6.e3 0–0 7.d4 f5 8.h4 g4 9.h5 Ne6 10.h6 d6 11.Bc4 d5 12.Bb3 Qd6 13.Ne2 Ng5 14.Nd2 Nf7 15.c4 dc4 16.Bc4 Kh8 17.Bf7 Rf7 18.Qb3 e6 19.Nc4 Qe7 20.Ne5 Rf6 21.Nf4 a6 22.Nh5 Rh6 23.Ke2 Kg8 24.Nf4 Rh1 25.Rh1 ab5 26.ab5 c6 27.f3 Qa3 28.Qa3 Ra3 29.fg4 cb5 30.gf5 ef5 31.Rb1 b6 32.Kf3 (32.Rb5?? Ba6–+) 32...Ra5 33.Nd5?? (better is 33.d5 Bb7 34.Rd1+=) 33...Bb7–+ 34.Kf4 Bd5 35.Kf5 Bg2 36.Rg1 Ra2 37.Ng4 Kg7 38.e4 (38.Ne5–+) 38...Nc6 39.d5 (39.Rd1 h5 40.Ne3 Rf2 41.Kg5 Be4 42.d5–+) 39...Nd4 40.Kg5 Nf3 (40...Nf3 41.Kf5 Ng1–+) 0–1. popovicigelu – gararag, kurnik, 2012.

4.c4 0–0 5.a4 d6 6.Nc3=.

4.c4 0–0 5.e4 Ne4 6.Nc3 (better 6.Bg7!? Kg7 7.h4=) 6...Nc3 7.Bc3 f5 8.Nh3 (8.Qh5 e5=+) 8...g4 9.Bg7 Kg7 10.Bd3?? (10.Ng1 e5=+) 10...d6?? (10...gh3 11.Qf3–+) 11.Qc2?? (11.Ng1 e5–/+) 11...e5 (11...gh3 12.gh3 Kh8 13.Rg1–+) 12.Kd1?? (12.Ng1 Qf6 13.Rb1 e4–+) 12...c5 (12...gh3 13.g3–+) 13.Nf4?? (13.Ng1–+) 13...Qg5 (13...ef4 14.f3–+) 14.f3?? (better 14.Nd5 Rf7 15.Qa4–/+) 14...Rd8 (better 14...Qf4 15.Be2 Qd4–+) 15.Ne6?? (15.Ne6 Be6 16.Rf1–+; better 15.Nd5 gf3 16.gf3+=). RichardSommer (2020) – schnurrr (1990), lichess.org, 2020.

4.c4 0–0 5.a4 h5 6.e3 (6.d3 d6=) 6...d6= 7.Nc3 (7.Bf6 Bf6 8.Nc3 h4=) 7...e5 8.Nf3 (better 8.h3=) 8...c6 (better 8...g4!? 9.Ng5 Nfd7=) 9.Ng5+– Ng4 10.h4 Qf6 (10...f6 11.Nf3+–) 11.Nce4 (11.f3 Nh6+–) 11...Qg6 12.Ng3 (12.f3 d5 13.cd5 cd5+–) 12...Bf5 (12...f6 13.Nf3+–) 13.Be2 (better 13.Nf5 Qf5 14.f3+–) 13...Nd7? (13...Bd7!?+–) 14.Nf5 (14.e4!? Be6 15.Nh5 Qh5 16.Ne6 fe6 17.Bg4 Qf7+–) 14...Qf5 Threatening mate... how? 15.f3 Ne3?? (better 15...Ngf6+–) 16.de3 Nc5 (16...Qg6 17.f4+–) 17.Kf2 (17.bc6 bc6 18.Qd6 Qc2 19.Qc5 Qb2+–) 17...Bh6 (17...Qg6 18.Ra3+–) 18.e4 (18.Qd6 Bg5 19.Qc5 Bf6+–) 18...Qf4 (18...Qg6 19.a5+–) 19.Bc1 (better 19.Qd6!? Bg5 20.Qc5 Bh4 21.Kf1 Rfe8+–) 19...Qf6 20.Be3 Nb3 (20...Rad8+–) 21.Qb3 Qg5 (21...a6+–) 22.hg5 Bg5 23.Bg5 Kh7 24.Qe3 (better 24.Rh5 Kg7 25.bc6+–) 24...Rg8 25.Rh5 Kg6 (25...Kg7 26.Qd2 Rge8 27.Be7 f6 28.Qh6 Kf7 29.Qf6 Kg8 30.Rh8) 26.Rah1 (26.Bd8 f6 27.Qh6 Kf7 28.Qf6 Ke8 29.Qe7) 26...Kg7 27.Bh6 (27.Be7 f6 28.Rh7 Kg6 29.R1h6) 27...Kf6+– 28.Rf5 Ke6 29.c5 Kd7 30.cd6 (30.cd6 Kc8 31.Qb3 Rd8 32.bc6 Rb8 33.Rf7 Rd6 34.cb7 Kd8 35.Bg5 Ke8 36.Rh8) 1–0. BeepBeepImAJeep (2520) – Homem_Conan, lichess.org, 2018.

4.c4 0–0 5.Qc2 d6 6.f3 Bf5?? (6...Nbd7 7.g4 e5 8.h4 gh4 9.Rh4=) 7.e4 (better is 7.Qf5 h6 8.h4+–) 7...Bg6 8.Nh3 Nh5 9.Ng5 Bb2 10.Qb2 e5 11.Be2?? (better is 11.Nh3+=) 11...Qg5–+ 12.0–0 (12.g3–+) 12...Nf4 13.Rf2 Ne2 (better is 13...Nh3! 14.Kf1 Nf2 15.Kf2 f5 16.ef5 Qh4 17.Kg1 Rf5–+) 14.Re2 Bh5 15.Rf2 Nd7 16.d4 Nf6 17.de5 de5 18.Nd2 Rad8 19.Nb3 Nd7 20.Raf1 b6 21.f4 Qe7 22.fe5 Ne5 23.Rf5 Be2?? 24.Qe2 Kh8 25.Qb2 f6 26.Qe2 Ng6 27.Nd2 Qc5?? 28.Kh1 Rd6?? 29.Rc5 bc5 30.Nf3 Re6 31.e5! f5 32.Ng5 Ra6 33.e6 Ra4 34.Qh5 Ra2 35.Qh7 1–0. chybol3 – lanos910, kurnik, 2012.

4.c4 0–0 5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nf3 cb5 10.cb5 Qa5 (10...g4!? 11.Ng1 d5=) 11.Bc3+/– Qc7 12.Ng5 d5 13.Be2 Bh6 (13...Bf5 14.Nf3+/–) 14.Nf3 Bg4 (14...Nbd7 15.0–0+/–) 15.h3 (15.Bf6!? ef6 16.Nc3 Be6+–) 15...Bf3+/– 16.Bf3 e5 17.d3 d4 (17...Nbd7!?+/–) 18.ed4+– ed4 19.Bd2 (better is 19.Bd4!? Re8 20.Kf1+–) 19...Re8 20.Kf1 Bg7 21.g3 Nbd7 22.Na3 (22.Kg2!?+/–) 22...Ne5= 23.Bf4 Qc3 24.Nc4?? (better is 24.Be5 Re5 25.Qa4+=) 24...Nd3–+ (24...Nc4?! 25.dc4 Qc4 26.Be2+=) 25.Be2? (better is 25.Nd2 Re1 26.Qe1 Ne1 27.Ke1–+) 25...Re2 (25...Qc4?! 26.Bd3 Qd5 27.Kg1=) 26.Qe2 Qc4 27.Bg5 Qb5 28.Bf6 Bf6 29.Kg2 Nf4! 30.Kf3 Qe2 31.Kf4 Qf2 (31...Qf2 32.Ke4 Qe3 33.Kd5 d3 34.Kc4 Qe4 35.Kb3 b5 36.Ka2 Qc4 37.Kb1 Qc2#; 31...h6 32.Re1 Bg5 33.Kf5 Qf3 34.Ke5 Bf6 35.Kd6 Qc6#) 0–1. olawoj – milmost, kurnik, 2012.

4.c4 b6 5.a4 a5 (5...a6 6.e3=) 6.e3 h6 7.Nf3 g4 8.Ng1 h5 9.h3 d5 (9...d6 10.d4=) 10.hg4 Bg4 11.Be2 (11.Nf3 c6=) 11...dc4= 12.Bg4 (12.Na3!?=) 12...hg4=+ 13.Rh8 Bh8 14.Qe2 Qd3 15.Qd3 cd3 16.f3 (16.Ra3 c6=+) 16...g3 (16...Nbd7 17.Ra3 Nc5 18.Bd4–/+) 17.Na3 (better 17.Ra3!?=) 17...Nbd7–/+ 18.Nc4 0–0–0 19.0–0–0 (better 19.Ba3!?–/+) 19...Nc5–+ 20.Bf6 (better 20.Ne5 Na4 21.Nf7–+) 20...Bf6 (20...ef6?! 21.Nh3–+) 21.Nb2 (21.Nh3 Na4 22.Nf4 e5–+) 21...Bb2 (21...c6 22.Nh3–+) 22.Kb2 Na4 23.Ka3 Nc5 24.Rc1 (24.f4 Rd5–+) 24...e5 25.Nh3 f6 (25...f5 26.Ng5–+) 26.f4 (26.Rc4–+) 26...Ne4 27.fe5 fe5 28.Rc4 (28.Rd1–+) 28...Nd2 29.Rc3 (29.Rc1 Nc4! 30.Kb3 d2–+) 29...Ne4 (29...Nb1 30.Ka2 Nc3 31.Kb2 d2 32.Kc3 d1Q 33.Nf2 Qd2 34.Kb3 Qb4 35.Ka2 Rd2 36.Ka1 Qb2) 30.Rc1 d2 31.Rd1 Nf2 32.Nf2 gf2 33.Kb2 f1Q! 34.Rf1 (34.Rf1 d1N Double attack) 34...d1Q 35.Rd1 Rd1 36.Kc2 Rg1 37.Kd3 Rg2 38.Ke4 Rg5 39.Kd5 Kd7 (better 39...e4 40.Ke4 a4 41.Kd4–+) 40.e4 a4 41.Kc4 a3 42.Kb3 Rg4 43.Ka3 Re4 44.Kb3 White threatens to counter with Rd4 44...Rd4 45.Kc3 (45.Ka2 Rd2 46.Ka3 e4 47.Ka4 e3 48.Kb3 e2 49.Ka3 e1Q 50.Ka4 Rb2 51.Ka3 Qb4) 45...c5 (45...Rd6 46.Kb2 e4 47.Kb3 e3 48.Kb2 e2 49.Kb3 e1Q 50.Ka3 Qc3 51.Ka2 Rd2 52.Kb1 Qb2) 46.bc6–+ Kc6 47.Kc2 Kd5 48.Kc3 (48.Kb2 e4 49.Ka2 e3 50.Kb3 e2 51.Kb2 Rd2 52.Kb3 e1Q 53.Kc3 Qc1 54.Kb4 Qc4 55.Ka3 Ra2) 48...Ke4 (48...e4 49.Kb3 e3 50.Kb2 e2 51.Ka3 e1Q 52.Kb2 Qd2 53.Ka1 Re4 54.Kb1 Re1) 49.Kc2 Kf3 (49...Ke3 50.Kc3 b5 51.Kc2 Rc4 52.Kb1 Kd2 53.Kb2 Rb4 54.Ka3 Kc3 55.Ka2 Kc2 56.Ka3 Ra4) 50.Kc3 (50.Kb2 b5 51.Kc3 Rc4 52.Kb2 e4 53.Ka2 e3 54.Ka3 e2 55.Kb3 e1Q 56.Kb2 Qb4 57.Ka1 Qa3 58.Kb1 Rc1) 50...b5 51.Kc2 (51.Kb2 e4 52.Kb3 e3 53.Kb2 Rc4 54.Ka2 e2 55.Kb1 e1Q 56.Kb2 Qb4 57.Ka1 Qa3 58.Kb1 Rc1) 51...e4 (51...Rc4 52.Kb2 e4 53.Ka2 e3 54.Ka3 e2 55.Kb3 e1Q 56.Kb2 Qb4 57.Ka1 Qa3 58.Kb1 Rc1) 52.Kc3 (52.Kc1 e3 53.Kb2 e2 54.Kc2 e1Q 55.Kb2 Qd2 56.Ka1 Re4 57.Kb1 Re1) 52...Rd3 (52...Rc4 53.Kb2 e3 54.Ka2 e2 55.Kb1 e1Q 56.Kb2 Qb4 57.Ka1 Qa3 58.Kb1 Rc1) 53.Kb4 e3 54.Kb5 (54.Ka5 e2 55.Kb4 e1Q 56.Kc5 Qe5 57.Kb6 Rd6 58.Ka5 Qd4 59.Kb5 Rb6 60.Ka5 Qb4) 54...e2 55.Kc5 (55.Kc6 e1Q 56.Kc5 Qe5 57.Kb4 Qd5 58.Ka4 Rd4 59.Ka3 Qb5 60.Ka2 Ra4) 55...e1Q 56.Kc4 Qc3 57.Kb5 Rd2 58.Ka4 Rd8 59.Kb5 Rb8 60.Ka6 (60.Ka4 Qb4) 60…Qa3 (60...Qa1) 0–1. afsharian (1640) – princekaka, lichess.org, 2018.

4.c4 b6 5.Nf3 e6 (5...g4 6.Nh4=) 6.d4 (6.Ng5 Bb7+/–) 6...Bb7 (6...g4 7.Nfd2 d5 8.e3=) 7.Nc3 (7.Ng5 a6+/–) 7...Qe7 (7...h6 8.e3+=) 8.e3 (8.Ng5 a6+/–) 8...d6 (8...g4 9.Ne5 h5 10.Nd3=) 9.Be2 (9.Ng5 c5+/–) 9...Nbd7 (9...g4 10.Nd2+=) 10.0–0 0–0–0 (10...h6 11.Re1+=) 11.a4 h6 12.a5 Ne4 13.ab6 ab6 14.Ne4 Be4 15.Nd2 Bb7 16.Bf3 d5 17.Qb3 Nb8 (17...Nf6 18.Ra7+–) 18.Rfc1 c5? (18...h5 19.Ba3 Qf6 20.Qc3+–) 19.cd5 (19.bc6!? Nc6 20.cd5 ed5 21.Bd5 Rd5 22.Qd5 Qd7+–) 19...ed5 (19...Bd5 20.Nc4 Bc4 21.Rc4 Qf8+–) 20.Ra7 Rd7 21.dc5 bc5 (21...Bb2 22.Qb2 Re8 23.c6 Bc6 24.Bg4+– (24.bc6?! Ra7 25.Qb6 Qc7+–)) 22.Bg7 c4 (22...Rh7 23.Qc3 f5+–) 23.Bh8 Kd8 24.Qc3 Rc7 25.Bf6 1–0. trutmo – jimaraslarisa, kurnik, 2013.

4.c4 d5 5.e3 Bg4 6.Be2 (6.Nf3 Rg8=) 6...Be2 7.Qe2 0–0 (7...a6 8.Nf3=) 8.Nf3 dc4 (8...g4 9.Ne5 dc4 10.Ng4+= (10.Nc4?! Qd5=; 10.Qc4?! Qd5=)) 9.Qc4+= (worse 9.Ng5 Qd5 10.f4 Qb5 11.Bf6 ef6=+) 9...a6 10.Ng5 ab5 11.Qb5 Qd5 (11...c6 12.Qc4+= (worse 12.Qb7 Ra5 13.Nh7 Kh7=)) 12.Qd5 Nd5 13.Bg7 Kg7 14.Nc3 (14.Ke2 Nc6+–) 14...Nc3+= 15.dc3 Ra3 16.Kd2 Nd7 17.Ne4 (17.Rhb1 Nc5 18.Kc2 Rfa8=) 17...Ne5 (17...Rfa8 18.Rhd1=) 18.f4 (18.Rhb1!? b6 19.f4+=) 18...Nc4= 19.Kd3 (19.Ke2 Rfa8=) 19...b5 20.Rhc1 (20.Rhb1 c6 21.g4 Rd8 22.Ke2 Rda8=+) 20...Rd8 21.Ke2 f5 22.h3?? (better 22.Nc5 Rd2 23.Kf3=+) 22…fe4–+ 0–1. afsharian – SCRUM, lichess.org, 2019.

4.c4 h6 5.Nf3 d6 6.e3 e5 7.Be2 (7.d4 g4 8.Nfd2 Bf5=) 7...Bg4 (7...g4 8.Ng1=+) 8.0–0= Nbd7 9.d4 e4 10.Nfd2 Be2 11.Qe2 Qe7 12.Nc3 0–0 (Better is 12...g4+=) 13.Nd5 Nd5=+ 14.cd5 c6?? 15.bc6 bc6 16.dc6 Nf6 17.a4 Rab8+/– 18.Ba3 Rfc8 19.Rfc1 Rb6 20.a5 Rbc6+= 21.Rc6 Rc6 22.Qb5 Qc7 23.g3 a6=+ 24.Qb3 Rc3 25.Qa4 Ng4?? 26.Ne4+– Rc2 27.Nd6 Rf2 28.Bc5 Rh2?? 29.Qc4 Rf2?? 30.Rf1?? Rf1 31.Kf1?? Ne3–+ 32.Kf2 Nc4 33.Nc4 Bd4! 34.Bd4 Qc4 35.Bb6 Qb5 0–1. stoker – DOORMAN, Live Game Caissa's Web, 2004.

4.e3 0–0 5.d4 a6 6.c4 c6 7.a4 ab5 8.cb5 d5 9.Nd2 Bf5 10.h3 Nbd7 11.Ngf3 c5 12.Ng5 c4 13.g4 Bg6 14.Bg2 e6 15.0–0 Nb6 16.Bc3 h6 17.Ngf3 Nc8 18.Ne5 Nd6 19.Ng6 fg6 20.Qc2 Kf7 21.Rfb1 Re8 22.f4 Rc8 23.a5 Qd7 24.a6 Nb5 25.ab7 Rb8 26.Ra5 Nc3 27.Qc3 Rb7 28.Rb7 Qb7 29.Nc4 Qb1 30.Kh2 dc4 31.Qc4 Re7 32.f5 gf5 33.gf5 Qe1 34.fe6 Kg8 35.Ra8 Bf8 36.Qd3 Kg7 37.d5 Nd5 38.Bd5 Qb4 39.Qf5 Qd6 40.Qf4 Qf4 41.ef4 1–0. monitorist (1810) – peyman_z (1900), lichess.org, 2017.

4.e3 0–0 5.h4+= Ne4 (better is 5...gh4!? 6.Bd3 h6+=) 6.Bg7+– Kg7 7.hg5 Ng5?? (better is 7...d5+–) 8.Qh5 e6 (8...f6 9.f4 Qe8 10.Qh6 Kg8 11.Bc4 e6 12.Bd3+–) 9.f4 (better is 9.Qh6 Kh8 10.Nf3+–) 9...Ne4 (9...Qf6 10.fg5 Qg6+–) 10.Qh7 (10.Qh6 Kg8 11.Qh7) 10...Kf6 11.Qe4 (11.Qh4 Kg6 12.Qh6 Kf5 13.g4 Kg4 14.Qh3) 11...Ke7+– 12.f5 Ke8 13.Bc4 (13.Qh4 d6+–) 13...a6? (13...d5 14.Bd5! Qd5 15.Qd5 ed5 16.g4+–) 14.a4 (14.fe6 de6 15.Nc3 ab5 16.Nb5 c6+–) 14...ab5?? (better is 14...d5 15.Bd5! Qd5 16.Qd5 ed5+–) 15.Bb5 c6 16.Bc4 b5? 17.Bb5! Bb7 18.fe6 (18.fe6 de6 19.Bc4+–) 1–0. jura1946 – mrcoke, kurnik, 2012.

4.e3 b6 5.Nf3 Bb7 6.Ng5 h6 7.Nh3 d6 8.d3 e5 9.Nd2 Nbd7 10.Be2 Qe7 11.0–0 0–0–0 (11...Rg8+/–) 12.Ne4 (12.a4!?+–) 12...Rdg8 (12...Ne4 13.de4 Be4 14.Bd3=) 13.Nf6 Bf6 14.Bf3 Bf3 (14...Qe6 15.Bb7 Kb7 16.Kh1+=) 15.Qf3+/– Kb8 16.c3 Rg7 17.d4 (17.Kh1!?+/–) 17...Rhg8+= 18.de5 (better is 18.g3+=) 18...Ne5–+ 19.Qe4 Rg4?? (better is 19...Rg2 20.Qg2 Rg2 21.Kg2 Nc4–+) 20.Qf5?? (better is 20.Nf4+=) 20...Rg2 (20...Qe6 21.Qh5 Rg2 22.Kh1–+) 21.Kh1 R2g6 22.f4? Ng4 23.e4? Ne3 24.Rf2 Nf5 25.ef5 Rg4 26.Raf1 Qe4 27.Rf3 Qe2 28.Bc1 Rg2 29.R3f2 Rf2 30.Rf2 Qe1 31.Rf1 Qf1 32.Ng1 Qg1# 0–1. poganinbezdom – varcolac, kurnik, 2012.

4.e3 c6 5.a4 d6 6.c4 Bf5 7.d4 Bb1 8.Rb1 cb5 9.ab5 a6 10.Qa4 0–0 11.Bc3 (11.Bd3 Qc7+/–) 11...Nbd7 12.Nf3 Ne4 13.Ba1 ab5 14.Qb5 Qa5 15.Qa5 Ra5 16.Bd3 Ndf6 17.0–0 (17.h4 h6+=) 17...d5 (17...Rfa8!?=) 18.cd5+= Rd5? (18...Rfa8 19.Rfc1+/–) 19.Ne5 (better is 19.Rb7 e6 20.Ra7+–) 19...Nd2+= 20.Rb7 Nf1 21.Kf1 Ra5 22.Bc3 Ra3 23.Bb4 Ra1 (23...Rb3!? 24.Ke2 Nd5=) 24.Ke2+/– Nd5 25.Be7 Ne7 26.Re7 Be5 27.Re5 f6 28.Re7 Ra5 (better is 28...h5!?+/–) 29.Bh7+– Kh8 30.Be4 f5 31.Bd3 f4 32.Re5 Re5? 33.de5 fe3 34.Ke3 Kg7 35.g3 Kh6 36.f4 gf4 37.gf4 Kg7 38.Ke4 Rh8 39.f5 Rh2 40.f6 Kf7 41.Bc4 Kf8 42.Kf5 Rh5 43.Ke6 Rh6 44.Kd7 Rh7?? 45.f7+– Rh4 46.Bd5 Rd4 47.Ke6 Rd5 48.Kd5 Kf7 49.Kd6 Ke8 ½–½. jura1946 – grywam, kurnik, 2012.

4.e3 d5!?=.

4.e3 d6 5.Nf3 g4 6.Nd4 e5 7.Ne2 (7.Nb3 Be6=) 7...Bd7 8.Ng3 h5 9.c4 (9.Bd3 a6=) 9...h4=+ 10.Ne2 c6 11.a4 cb5 (11...Be6 12.d4=+) 12.ab5= Be6 13.Ng1 Nbd7 14.h3 (14.d4 Qc7=+) 14...g3 15.fg3 (15.d3 d5 16.Nd2 dc4 17.dc4 gf2 18.Kf2 Qc7=+) 15...hg3 (15...Ne4 16.Ne2 Qf6 17.Nf4–/+) 16.Qf3 (16.Nc3 Nb6 17.Qf3 Bc4 18.Qb7 Bf1 19.Kf1 d5=) 16...Nh5 (better 16...e4 17.Qd1 Ne5 18.Be5 de5–/+) 17.Ne2?? (better 17.Qb7 Nc5 18.Qc6 Bd7 19.Qd5=) 17...Qg5?? (better 17...e4 18.Qe4 Bb2–+) 18.Qb7+– Rc8?? (better 18...Qd8+–) 19.Qc8+– Ke7 20.Qc6 Nc5 21.Ra7 Kf6 (21...Bd7 22.Nc1 Nf6 23.Nd3+–) 22.Qf3 (better 22.Qd6 Qf5 23.Qe5 Qe5 24.Be5 Ke5 25.d4 Kd6 26.dc5 Kc5+–) 22...Kg6 23.h4 (better 23.e4+–) 23...Nd3 24.Kd1 Nb2 25.Kc2 Qd8 (25...e4 26.Qf7! Bf7 27.hg5 Nd3+–) 26.Ng3 Nc4 (26...Ng3 27.Qg3 Kh7 28.Kb2+–) 27.Nh5 (27.Bd3 e4 28.Be4 f5 29.Bf5 Kf6 30.Be4 Nf4 31.Qf4 Bf5 32.Qf5) 27...Rh5+– 28.g4 Rh8 (28...Ne3 29.de3 Rh4 30.Bd3 Kg5+–) 29.Bd3 f5 (29...e4 30.Be4 f5 31.Bf5 Kf6 32.g5 Ke5 33.d4) 30.gf5 (30.Bf5 Kh6 31.g5 Qg5 32.hg5 Kg5 33.Qg4 Kf6 34.Qg6) 30...Kf6 31.fe6 Ke6 32.Qf7 1–0. AhmedSultanov (1795) – lory06 (1755), lichess.org, 2019.

4.e3 h6 5.h3 b6 6.Qf3 c6 7.a4 (7.Nc3 a6=) 7...Bb7 8.Qd1 0–0 (8...a6 9.Nf3=) 9.Nf3 (9.h4 gh4 10.Rh4 Re8+=) 9...cb5 (9...a6 10.Be2=) 10.ab5 d6 11.c4 Nbd7 12.Be2 Nc5 13.d4 Nce4 14.0–0 Rc8 (14...a6 15.ba6 Ba6 16.Nbd2+=) 15.Nbd2 (15.Ra7 Qc7 16.Nc3+–) 15...Kh8 (15...Ra8!?+–) 16.Ra7+– Rb8 (16...Qc7 17.Ne4 Ne4 18.Qc2+–) 17.Ra2 (17.Qc2 Qc8+–) 17...g4 (17...Qc7 18.Qc2+–) 18.hg4 Nd2 19.Nd2 Bg2?? (19...Qd7+–) 20.Kg2 Rg8 21.Rh1 Nd7 (21...d5 22.Kf1 Bf8 23.Ke1+–) 22.Kf1 Qc7 (22...e6 23.Nf3+–) 23.Nf3 (23.g5 Ra8 24.Ra8 Ra8 25.gh6 Bf6+–) 23...Qb7 (23...d5 24.Qd3 Rgc8 25.cd5+–) 24.d5 (better 24.g5 Ra8 25.Ra8 Ra8 26.gh6 Bf6+–) 24...Bb2 25.Rb2 Rg4 26.Ne5! Ne5 (26...de5 27.Rh6 Double attack (27.Bg4 Discovered attack); 26...Ne5 27.Rh6 Double attack (27.Bg4 Discovered attack)) 27.Bg4 Nc4 (27...Qc7+–) 28.Qd4 Ne5 29.f4 Rg8 (29...Qc7 30.Rg2 Rg8 31.fe5 Qc1 32.Bd1 Rg2 33.Kg2+–) 30.fe5 e6 31.ed6 Kh7 (31...Rg7 32.Rh6 Kg8 33.Rbh2 Rh7 34.Rh7 f6 35.Qf6 Qh7 36.Be6 Qf7 37.Qf7) 32.Rbh2 (32.Rh6 Kh6 33.Qf6 Kh7 34.Rh2) 32...Rg6 33.de6 (33.Qf4 Kh8 34.Rh6 Kg7 35.Rg6 fg6 36.Qe5 Kf7 37.de6 Ke8 38.Rh8) 33...fe6 34.Be6! Qf3 (34...Re6) 35.Ke1 Re6 36.Qd3 Kg7 37.Rg1 Kf7 38.Rf2 Re3 (38...Rd6 39.Rf3 Ke7 40.Rg7 Ke8 41.Qe4 Kd8 42.Rf8) 39.Qe3 (39.Qe3 Qf2 40.Kf2 Kf6 41.d7 Kf5 42.d8Q h5 43.Rg5) 1–0. AhmedSultanov (1640) – protrader1234, lichess.org, 2019.

4.Nf3 g4 5.Ne5 d6 6.Nd3 =+.

4.Nf3 h6 5.e3 0–0 6.c4 d6 7.d4 Nbd7 (7...c5 8.Bd3=) 8.Bd3+= Nb6 ½–½. Fournier,Frederic – Morel,Jennifer, Partie Libre, 1996.

4.Nf3 h6 5.e3 c5 6.c4 d6 7.h4 (7.Be2 g4 8.Nh4 a6=) 7...g4=+ 8.Nh2 h5 (Better is 8...a6=+) 9.f3?? (Better is 9.Bd3=) 9...g3–+ 10.Nc3 Nbd7 11.Be2 gh2 12.Rh2 Ne5 13.Qc2 Bd7 14.0–0–0 Qa5 15.Kb1 a6 16.Qa4 Qa4 17.Na4 ab5 18.Nb6 Rb8 19.Nd7 Kd7 20.cb5 Ra8 21.d4 cd4 22.ed4 Ng6 23.Bc4 d5 24.Bb3 Nf4 25.Rhh1 Rhg8 26.g3 Ne6 27.g4 hg4 28.fg4 Ng4 29.Rhg1? Ne3 30.Rde1 Nc4 31.h5?? Nb2 32.Kb2 Bd4 33.Kc2 Rg1 34.Rg1 Rh8 35.Rf1 f6 36.Bd5 Rh5 37.Bb7 Rb5 38.Kd3 Rb7 39.Rd1 Rb6 40.Kc4 Rc6 41.Kb5 Rc5 42.Kb4 Rc6 43.a4?? Kc7–+ 44.Kb5 Bb6 45.Rh1 Rc5 46.Kb4 –+. stoker – henrigrob, Live Game Caissa's Web, 2004.

4.h3 0–0 5.e3 d6 6.c4 e5 7.a4 Be6 8.Nc3 Nbd7 9.h4 (9.Nf3 h6=) 9...gh4 (9...g4!?+=) 10.Rh4= c6 11.Qc2 d5 12.Ba3 Re8 13.cd5 cd5 14.Nf3 Rc8 15.Ng5 (15.Be2 Bg4+=) 15...Ne4 (better is 15...d4 16.Bd3 e4 (16...dc3 17.Bh7 Kh8 18.dc3+/–) 17.Be4 Ne4 (17...dc3 18.Bh7 Kh8 19.dc3+/–) 18.Qe4 f5 19.Ne6 A) 19...dc3 20.Qd5 cd2 21.Kd1 Re6 22.Qe6 Kh8 23.Rd4 (23.Qf5?? Qh4 24.Qd7 Qa4 25.Kd2 Qc2 26.Ke1 Ba1–+) 23...Bd4 24.ed4+=; B) 19...fe4 20.Nd8 dc3 21.Nb7 cd2 22.Kd2 Ba1–/+) 16.f4?? (better is 16.Nge4 Qh4 17.Nd6+=) 16...h6 (better is 16...ef4 17.ef4 Ng5–+) 17.Ne6 (17.Nge4 Qh4 18.g3–+) 17...Qh4 (17...fe6?! 18.Rh3 ef4 19.ef4–+) 18.Kd1 Nf2 (18...fe6 19.f5–+) 19.Kc1 Re6 (19...Re6 20.fe5 Be5–+) 0–1. jura1946 – viator, kurnik, 2013.

3.Nc3 d5

4.Nf3 g4 5.Ne5 a5 6.a3 ab4 7.ab4 Ra1 8.Qa1 Bg7 9.e3 0–0 10.f3 Be6 11.fg4 Ng4 12.Ng4 Bg4 13.d4 e5 14.de5 Nc6 15.Qa4 Re8 16.Qb5 Be5 17.Qb7 Qh4 18.g3 Qh6 19.Nd5 Bb2 20.Kf2 Bd4! 21.h3 (21.ed4 Qd2) 21...Re3! 22.Kg2 (22.Ne3 Qe3) 22...Bf3 23.Kh2 Re1 24.Qc8 Kg7 25.Nf4 Bh1 26.Bg2 Bg1 27.Kh1 Be3 28.Kh2 Qf4! 29.h4 Bg1 30.Kh3 Re3 31.Qg4 Qg4 32.Kg4 Nd4 33.Bd5 f5 34.Kh3 Bf2 35.Kg2 Bg3 36.c4 c6 37.Bc6 Nc6 38.b5 Ne5 39.h5 f4 40.h6 Kh6 41.c5 Re2 42.Kf1 f3 43.b6 Re1# 0–1. MacChess 5.0 – MacChess 5.0, 2000.

4.Nf3 g4 5.Ne5 Bg7 6.e3 c6=.

3.Nc3 Bg7

4.a3 A) 4...0–0 A1) 5.e3 Nc6 (5...d6 6.h3 a5 7.Nf3 h6 8.d4 ab4 9.ab4 Ra1=; 5...a5 6.Nf3 g4 7.Ne5 d6 8.Nd3 ab4 9.ab4 Ra1=) 6.b5 Nb8 7.Bd3 d5 8.Nce2 a6 9.Ng3 Re8=; A2) 5.d4 d5 (5...a5 6.e4 d5 7.e5 Ng4 8.Nf3 f6 9.h3 Nh6=; 5...d6 6.Qd2 h6 7.e4 c5 8.Nge2 d5 9.bc5 de4+=) 6.Nf3 a5 7.b5 Nbd7 8.e3 g4 9.Ne5 Nb6=; B) 4...d6 B1) 5.Ne4 e5 (5...Nbd7 6.e3 0–0 7.Ng5 h6 8.N5f3 Nb6 9.c4 Bd7=) 6.Ng5 0–0 7.e3 Nc6 8.Be2 Nd5 9.N1h3 h6=; B2) 5.e3 e5 (5...0–0 6.h3 a5 7.Nf3 ab4 8.ab4 Ra1 9.Qa1 h6=; 5...a5 6.d3 0–0 7.b5 e5 8.Be2 Be6 9.Nf3 h6=) 6.h3 0–0 7.Nf3 h6 8.Be2 Be6 9.d4 e4=; B3) 5.d4 0–0 (5...Nbd7 6.e4 e5 7.Nf3 0–0 8.de5 Ne8 9.ed6 Nd6+=; 5...a5 6.e4 0–0 7.Qd2 h6 8.b5 c5 9.bc6 Nc6=) 6.Qd2 h6 7.e4 c5 8.bc5 dc5 9.Rd1 cd4+=; B4) 5.d3 Nc6 (5...0–0 6.e3 e5 7.Be2 Nfd7 8.h4 g4 9.Bg4 f5+=; 5...Nbd7 6.e4 0–0 7.Nf3 h6 8.Qd2 a5 9.Be2 ab4=) 6.Ne4 0–0 7.Ng5 h6 8.N5f3 e5 9.e4 Be6=; C) 4...Nc6 C1) 5.Nd5 e5 (5...Nd5 6.Bg7 Rg8 7.Bb2 d6 8.c4 Nb6 9.Qc2 e5+=; 5...0–0 6.Nf6 ef6 7.Nf3 d6 8.e3 Be6 9.d4 f5=) 6.e4 d6 7.Qf3 Nd5 8.ed5 Ne7 9.d4 g4=; C2) 5.e3 0–0 (5...d5 6.Bb5 Qd6 7.Nf3 0–0 8.Ng5 a5 9.Bc6 bc6=; 5...d6 6.b5 Ne5 7.d4 Ng6 8.Bd3 Nh4 9.g3 Ng6=) 6.b5 Nb8 7.Bd3 d5 8.Nce2 a6 9.Ng3 Re8=; C3) 5.b5 Ne5 6.e4 d5 7.d4 Ng6 8.e5 Ng4 9.Bc1 f6=; C4) 5.Ne4 e5 (5...Ne4 6.Bg7 Rg8 7.Bb2 d6 8.e3 Nf6 9.Bb5 Bd7+=; 5...0–0 6.Nf6 ef6 7.e3 d6 8.d4 f5 9.Qh5 Qf6+=) 6.Ng5 d6 7.e3 0–0 8.Be2 Nd5 9.N1h3 h6=; D) 4...a5 D1) 5.Nd5 e6 (5...d6 6.Nf6 Bf6 7.Bf6 ef6 8.e3 h5 9.b5 Qe7=; 5...0–0 6.Nf6 Bf6 7.Bf6 ef6 8.e3 d6 9.b5 f5+=) 6.Nf6 Bf6 7.d4 ab4 8.ab4 Ra1 9.Ba1 Qe7=; D2) 5.e3 d5 (5...0–0 6.Nf3 g4 7.Ne5 d6 8.Nd3 ab4 9.ab4 Ra1=; 5...d6 6.d3 0–0 7.b5 e5 8.Be2 Qe7 9.g4 Be6=) 6.Nf3 g4 7.Ne5 0–0 8.Be2 ab4 9.ab4 Ra1=; D3) 5.Nf3 g4 (5...d5 6.Ng5 0–0 7.e3 ab4 8.ab4 Ra1 9.Ba1 Nc6=; 5...0–0 6.Ng5 d5 7.e3 ab4 8.ab4 Ra1 9.Ba1 Nc6=) 6.Ne5 d6 7.Nd3 Bf5 8.e3 e5 9.Be2 Nbd7=; D4) 5.Ne4 ab4 (5...0–0 6.Nf6 Bf6 7.Bf6 ef6 8.e3 d6 9.b5 f5+=; 5...d6 6.Nf6 Bf6 7.Bf6 ef6 8.e3 Be6 9.Nf3 Nd7+=) 6.ab4 Ra1 7.Qa1 0–0 8.Ng5 d5 9.e3 Bf5=; E) 4...d5 E1) 5.Nf3 g4 6.Ne5 d4 7.Na4 Qd5 8.Nd3 Nc6 9.c4 Qc4+=; E2) 5.e3 g4 (5...Nc6 6.Bb5 Qd6 7.Nf3 0–0 8.Ng5 a5 9.Bc6 bc6=; 5...0–0 6.Nf3 g4 7.Ne5 a5 8.Be2 ab4 9.ab4 Ra1=) 6.Nge2 Nc6 7.d4 h5 8.Nf4 h4 9.Na4 Bh6=; E3) 5.Na4 Nc6 (5...Qd6 6.e3 Nc6 7.d4 0–0 8.Nf3 g4 9.Ne5 Ne4=; 5...0–0 6.Nf3 g4 7.Ne5 Ne4 8.e3 Qe8 9.f3 Qa4+=) 6.Nf3 g4 7.Nd4 Nd4 8.Bd4 Qd6 9.Nc3 c6+=; E4) 5.d4 0–0 (5...a5 6.b5 0–0 7.Nf3 g4 8.Ne5 Bf5 9.e3 Nbd7=; 5...Nbd7 6.Nf3 0–0 7.e3 g4 8.Ne5 c6 9.Ng4 Ne8+=) 6.Nf3 a5 7.b5 g4 8.Ne5 Bf5 9.e3 Nbd7=.

4.Nd5 A) 4...e6 5.Nf6 (5.Bf6 Bf6 6.Nf6 Qf6 7.d4 Nc6 8.c3 e5 9.b5 Ne7=) 5...Bf6 6.d4 d5 7.e3 Nc6 8.a3 Qd6 9.b5 Ne7+=; B) 4...d6 B1) 5.e4 0–0 (5...e5 6.Nf6 Qf6 7.Bc4 Nc6 8.b5 Nd4 9.Ne2 Be6=; 5...Nd5 6.Bg7 Rg8 7.Bb2 Nb4 8.a3 N4c6 9.Qh5 e5+=) 6.Bc4 Nbd7 7.Nf6 Nf6 8.Qf3 c6 9.Ne2 d5+=; B2) 5.e3 Nbd7 (5...Nd5 6.Bg7 Rg8 7.Bb2 Nb4 8.a3 N4c6 9.d4 Bf5=; 5...e5 6.Nf6 Bf6 7.Ne2 Bg7 8.Ng3 0–0 9.d4 Qe7=) 6.Nf6 Nf6 7.d3 0–0 8.Nf3 g4 9.Nd2 e5=; B3) 5.Nf6 Bf6 (5...ef6 6.e3 0–0 7.a3 Nc6 8.d4 Re8 9.b5 Ne7+=) 6.Bf6 ef6 7.d4 Nc6 8.b5 Ne7 9.e3 Be6+=; C) 4...0–0 5.Nf6 ef6 (5...Bf6 6.Bf6 ef6 7.e3 d5 8.Bd3 f5 9.Nh3 Qf6+=) 6.e3 d5 7.Nf3 Re8 8.Be2 Qd6 9.a3 Nc6+=; D) 4...Nc6 5.b5 Nb8 (5...Nd5 6.Bg7 Rg8 7.Bb2 Na5 8.e3 d6 9.c4 Nf6+/– 1.00; 5...Na5 6.e4 d6 7.d3 h6 8.Nf3 0–0 9.Nf6 ef6+/–) 6.Nf3 e6 7.Nf6 Bf6 8.d4 c5 9.bc6 Nc6+=; E) 4...Nd5 5.Bg7 Rg8 6.Bb2 Nb4 7.a3 N4c6 8.e4 e5 9.Ne2 d6=.

4.e3 0–0 A) 5.Rb1 d6 (5...a5 6.b5 d5 7.Nf3 g4 8.Ne5 a4 9.d4 Qd6=; 5...d5 6.Nf3 a5 7.b5 g4 8.Ne5 a4 9.d4 Qd6=) 6.a3 e5 7.Be2 h6 8.d3 Be6 9.Nf3 Nfd7=; B) 5.Be2 d5 (5...a5 6.b5 d5 7.Nf3 g4 8.Ne5 Qd6 9.d4 Nbd7=; 5...d6 6.h3 e5 7.Nf3 h6 8.a3 Nc6 9.b5 Na5=) 6.Nf3 g4 7.Ne5 a5 8.a3 ab4 9.ab4 Ra1=; C) 5.Nf3 g4 (5...a5 6.b5 g4 7.Ne5 d6 8.Nd3 Nbd7 9.Be2 Nb6=; 5...d5 6.Ng5 a5 7.ba5 Ra5 8.Nf3 Nc6 9.Nb5 Bg4=) 6.Ne5 d6 7.Nd3 e5 8.h3 gh3 9.gh3 e4=; D) 5.a3 Nc6 (5...a5 6.Nf3 g4 7.Ne5 d6 8.Nd3 e5 9.Be2 c6=; 5...d6 6.h3 e5 7.Nf3 a5 8.Ng5 d5 9.Nf3 d4=) 6.b5 Nb8 7.Bd3 d5 8.Nce2 a6 9.Ng3 Re8=.

4.e3 a5 A) 5.b5 0–0 (5...d5 6.Nf3 0–0 7.Ng5 Nbd7 8.Be2 a4 9.a3 Nb6+=; 5...d6 6.d4 0–0 7.Bd3 a4 8.a3 Re8 9.Qd2 d5+=) 6.Qf3 d5 7.Qg3 h6 8.0–0–0 Nh5 9.Qf3 Nf6=; B) 5.ba5 0–0 (5...d5 6.Nf3 Ra5 7.Ng5 0–0 8.Nb5 Bg4 9.Nf3 Nc6=; 5...d6 6.Rb1 Ra5 7.Nf3 0–0 8.d4 Nc6 9.Bb5 Nb4=) 6.Bd3 Ra5 7.Ne4 Ne4 8.Bg7 Kg7 9.Be4 d5=; C) 5.Nd5 ab4 6.Nb4 Nc6 7.a3 0–0 8.Be2 Re8 9.d4 Na5=; D) 5.a3 d5 (5...d6 6.d3 0–0 7.b5 e5 8.Be2 Ne8 9.h4 g4=; 5...0–0 6.Nf3 g4 7.Ne5 d6 8.Nd3 Bf5 9.h3 g3=) 6.Nf3 ab4 7.ab4 Ra1 8.Ba1 Nc6 9.Bb5 Qd6=.

4.e3 c6 5.Nf3+/– (5.Ne4 d6 (5...d5 6.Nf6 Bf6 7.Bf6 ef6 8.Be2 Qe7 9.c3 h5+=; 5...h5 6.Ng5 d6 7.N1f3 Rg8 8.Bc4 Nd5 9.Qb1 Bg4+/–) 6.Nf6 Bf6 7.Bf6 ef6 8.Be2 Qb6 9.c3 Be6+=; 5.Bd3 d5 (5...d6 6.Nf3 e5 7.Ng5 d5 8.e4 Ng4 9.Nh3 Nf6+=; 5...0–0 6.g4 Nd5 7.a3 Nc3 8.Bc3 Bc3 9.dc3 e5=) 6.Nce2 Qd6 7.Nf3 g4 8.Nfd4 h5 9.Ng3 e6=; 5.d4 d5 (5...0–0 6.Bd3 d6 7.Nf3 g4 8.Nd2 c5 9.bc5 dc5+=; 5...b6 6.e4 d5 7.e5 Ng4 8.Nf3 f6 9.h4 fe5=) 6.Bd3 Qd6 7.a3 Bg4 8.Nge2 Nbd7 9.f3 Bh5=; 5.Be2 d5 (5...d6 6.Nf3 g4 7.Nd4 h5 8.Nb3 h4 9.0–0 d5=; 5...0–0 6.Nf3 g4 7.Nd4 d5 8.Nb3 Qd6 9.a3 Rd8=) 6.Nf3 g4 7.Ne5 Qd6 8.Rb1 h5 9.Nd3 h4=) 5...d6 (5...g4 6.Nd4 d5 7.Nb3 h5 8.Na4 b6 9.d3 h4=; 5...d5 6.Ng5 0–0 7.Be2 e5 8.0–0 e4 9.f3 h6=; 5...0–0 6.Ng5 d5 7.Be2 e5 8.Nf3 Qd6 9.a3 Ng4+=) 6.Ng5 h6 (6...0–0 7.d4 d5 8.Bd3 b6 9.a3 Qc7+/–) 7.Nf3 Bg4 (7...0–0 8.d4 Qb6 9.a3 a5+/–) 8.h3 Bh5 9.Be2 (9.b5 Bg6+/–) 9...Bg6 (9...Qb6+/–) 10.0–0 Nbd7 11.b5 Qb6 12.Rb1 0–0–0 (12...c5+–) 13.bc6 Qc6 14.Nd4 Qc5 15.Ncb5 a6? (15...Kb8+–) 16.Ba3 Qd5 (16...Qg5 17.f4 Qg3 18.Na7 Kb8 19.Nac6 Ka8 20.Ba6+–) 17.Na7 (better is 17.c4!? Qg5 18.f4 Qg3 19.Na7 Kc7+–) 17...Kc7 18.d3 (18.Bf3 Be4 19.c4 Bf3+–) 18...Ra8 (18...Qa5 19.Bf3 Nd5 20.Nab5 ab5 21.Nb5 Kb8 22.Bd5 Rc8+–) 19.Bf3 Qa5 (19...Ne4 20.de4 Qg5+–) 20.Rb7 Kd8 21.Nac6 (21.Nac6 Ke8 22.Na5+–) 1–0. oliver – game10, internet, 2011.

4.e3 Nc6 5.h4 (5.b5 Ne5 6.d4 Ng6 7.Nf3 g4 8.Nd2 h5 9.Bd3 h4=) 5...gh4 (5...g4 6.b5 Nb8 7.Nd5 e6 8.Nf6 Bf6 9.Bf6 Qf6=) 6.Rh4 d5 7.Nf3 Bg4 8.Na4 Rg8 9.b5 Na5=.

4.e3 d5 A) 5.Rb1 g4 (5...Nc6 6.b5 Ne5 7.d4 Ng6 8.Nf3 g4 9.Ne5 Qd6=; 5...0–0 6.Nf3 a5 7.b5 g4 8.Ne5 a4 9.d4 Qd6=) 6.Nce2 h5 7.Nf4 Qd6 8.Nd3 a5 9.b5 Nbd7=; B) 5.a3 g4 (5...Nc6 6.Bb5 Qd6 7.Nf3 0–0 8.Ng5 a5 9.Bc6 bc6=; 5...0–0 6.Nf3 a5 7.Ng5 ab4 8.ab4 Ra1 9.Ba1 Nc6=) 6.Nge2 Nc6 7.b5 Ne5 8.Ng3 h5 9.d4 Ng6+=; C) 5.Nce2 a5 (5...0–0 6.a3 Qd6 7.h3 a5 8.Nf3 ab4 9.Be5 Qb6=; 5...g4 6.Nf4 0–0 7.a3 Qd6 8.Nd3 a6 9.Be5 Qd8=) 6.a3 0–0 7.Nf3 ab4 8.ab4 Ra1 9.Qa1 g4+=; D) 5.Nf3 a5 (5...0–0 6.Ng5 a5 7.ba5 Ra5 8.Nf3 Nc6 9.Nb5 Bg4=; 5...a6 6.Ng5 e5 7.Be2 Nc6 8.b5 ab5 9.Nb5 0–0=) 6.a3 0–0 7.Ng5 ab4 8.ab4 Ra1 9.Ba1 Nc6=.

4.e3 d6!?= A) 5.d3 g4 (5...e5 6.Nf3 h6 7.Be2 0–0 8.0–0 Be6 9.a4 Re8=; 5...0–0 6.Nf3 g4 7.Nd2 e5 8.Be2 Be6 9.0–0 c6=) 6.Nge2 e5 7.Qd2 Nc6 8.b5 Ne7 9.d4 0–0=; B) 5.d4 0–0 (5...a5 6.b5 0–0 7.Bd3 a4 8.a3 g4 9.Nge2 d5+=; 5...d5 6.Bd3 0–0 7.Nf3 Nc6 8.a3 g4 9.Ne5 Ne5+=) 6.Nf3 g4 7.Nd2 d5 8.Bd3 Nc6 9.a3 e5=; C) 5.Nf3 g4 (5...a5 6.b5 g4 7.Nh4 e6 8.d4 Bh6 9.g3 Bg5=) 6.Nd4 e5 7.Nb3 0–0 8.Be2 Bf5 9.h3 gh3=; D) 5.Ne4 Nbd7 (5...e5 6.Ng5 0–0 7.a3 a5 8.b5 Ng4 9.N1h3 f6=) 6.Ng5 0–0 7.Ne2 h6 8.Nf3 Nb6 9.Ng3 e5=.

4.Ne4 Nc6 A) 5.Nf6 Bf6 (5...ef6 6.b5 Ne5 7.e3 f5 8.Qh5 d6 9.d4 Ng6+=) 6.Bf6 ef6 7.b5 Ne7 8.e3 h5 9.Bd3 h4+=; B) 5.b5 Nb8 (5...Nb4 6.Nf6 Bf6 7.Bf6 ef6 8.c4 Qe7 9.Qb3 a6+–; 5...Ne4 6.Bg7 Rg8 7.Bb2 Nb8 8.e3 d5 9.d3 Nd6+=) 6.e3 Ne4 7.Bg7 Rg8 8.Bb2 d5 9.d3 Nd6+=.

4.Ne4 d5 A) 5.Ng5 a5 (5...0–0 6.e3 Qd6 7.a3 Nc6 8.N1f3 h6 9.b5 Na5=; 5...Qd6 6.a3 Nbd7 7.e3 h6 8.N5f3 0–0 9.Ne2 Rd8+=) 6.b5 Nbd7 7.e3 a4 8.N1f3 a3 9.Bd4 h6=; B) 5.Nf6 Bf6 (5...ef6 6.Nf3 0–0 7.e3 Re8 8.Be2 Qe7 9.a3 Nc6+=) 6.Bf6 ef6 7.e3 Qe7 8.b5 h5 9.Nf3 h4+=.

4.Ne4 d6 A) 5.e3 e5 (5...Nbd7 6.Ng5 0–0 7.Ne2 Nb6 8.Ng3 a5 9.Nh5 Na4+=; 5...Nc6 6.b5 Ne5 7.Ng5 Rg8 8.N1f3 h6 9.Ne5 de5=) 6.Ng5 0–0 7.a3 Nc6 8.Ne2 Nd5 9.h4 h6=; B) 5.Ng5 0–0 (5...a5 6.b5 Nbd7 7.e4 h6 8.N5f3 Rg8 9.d3 Nc5+=; 5...Rg8 6.e3 h6 7.N5f3 Nc6 8.b5 Nb8 9.d4 Nbd7+=) 6.e3 e5 7.a3 Nc6 8.Bb5 a5 9.Bc6 bc6=; C) 5.a3 e5 (5...Nbd7 6.e3 0–0 7.Ng5 h6 8.N5f3 Nb6 9.c4 Bd7=; 5...e6 6.Nf6 Bf6 7.d4 Qe7 8.e4 e5 9.d5 0–0+=) 6.Ng5 Nc6 7.e3 0–0 8.Be2 Nd5 9.h4 h6=; D) 5.Nf6 Bf6 (5...ef6 6.a3 Nc6 7.d4 f5 8.e3 Be6 9.Rb1 Ne7+=) 6.Bf6 ef6 7.e3 Qe7 8.d4 h5 9.Nf3 h4+=.

4.Ne4 Ne4 5.Bg7 Rg8 6.Bb2 d5 7.e3 Bf5 8.Nf3 Nd6 9.a4 g4+=.

4.Ne4 e6 A) 5.e3 d6 (5...Nc6 6.b5 Nb4 7.c4 d5 8.Nf6 Bf6 9.Bf6 Qf6+–) 6.Qf3 e5 7.Ng5 h6 8.Ne4 Ne4 9.Qe4 d5=; B) 5.Ng5 0–0 (5...d6 6.e3 0–0 7.Qf3 e5 8.Bd3 Nc6 9.a3 d5+=; 5...Rg8 6.e3 d6 7.d4 h6 8.N5f3 Nc6 9.a3 a5+=) 6.e3 h6 7.Ne4 Ne4 8.Bg7 Nf2 9.Kf2 Kg7+=; C) 5.Rb1 d6 (5...d5 6.Ng5 a5 7.b5 Nbd7 8.e3 0–0 9.N1f3 h6+=; 5...Ne4 6.Bg7 Rg8 7.Bb2 d6 8.e3 Nf6 9.Bc4 Nbd7+=) 6.e3 e5 7.Ng5 0–0 8.d4 Qe7 9.a3 Rd8=; D) 5.a3 d6 (5...d5 6.Ng5 Nbd7 7.e3 Rg8 8.N1f3 Bf8 9.d3 e5+=; 5...Ne4 6.Bg7 Rg8 7.Bb2 d6 8.e3 g4 9.d3 Nf6+/–) 6.Nf6 Bf6 7.d4 a5 8.e4 ab4 9.ab4 Ra1+=.

4.Ne4 h6 5.Nf3 0–0 6.Nf6 ef6 7.e4 (7.e3 d5+=) 7...d6 (7...Re8 8.Be2+=) 8.Bc4 (8.Bd3 f5 9.Bg7 Kg7+=) 8...Be6 (8...g4 9.Nd4=) 9.Be2 (9.Be6 fe6 10.h4 Qd7 11.hg5 fg5 12.Bg7 Qg7+=) 9...Nd7 10.0–0 Ne5 11.Nd4 Qe7 (11...c5!? 12.bc5 dc5 13.Ne6 fe6 14.Be5 fe5+/–) 12.f4+/– Nc4 13.Bc1 (13.Bc4 Bc4 14.d3 Be6+/–) 13...c5 14.bc5 dc5 15.Ne6 Qe6 16.Rb1 (16.d3 Rfd8 17.f5 Qe5+/–) 16...b6 (16...Qe4 17.Bf3 Qf4 18.Kh1=) 17.d4 (17.d3!? Nd6 18.a3+/–) 17...cd4+= 18.Qd4 Nd6 19.Ba3 Rfd8 20.Rfd1 (20.Bd6 Qd6 21.Qd6 Rd6=) 20...Nb7 (20...Ne4!? 21.Qd8 Rd8 22.Rd8 Kh7–/+) 21.Qc4= Na5 22.Qe6 fe6 23.f5 ef5 24.ef5 Rac8 25.Rd8 Rd8 26.Bd3 Nc6 27.Re1 Ne5 28.Be4 Bf8 29.Bb2 Bc5 (29...Bb4 30.Rc1+=) 30.Kh1 Ng4 31.h3 Nf2 32.Kh2 Bd4 (better is 32...Ne4!? 33.Re4 Rd2 34.Bf6 Rc2+=) 33.Ba3 1–0. mapaj – gabrie2010, kurnik, 2013.

4.Ne4 h6 5.Nf6 ef6 6.c4 0–0 7.d3 f5 8.g3?? (better is 8.Bg7 Kg7 9.d4+=) 8...Bb2–+ 9.Rb1 (9.Bg2 Bc3 10.Kf1 Ba1 (worse is 10...Bb4 11.Rb1 c5 12.Qc1–+) 11.Qa1 Re8–+) 9...Bg7 (better is 9...Bc3 10.Qd2 Bd2 11.Kd2 a5–+) 10.Qc2 d5 11.h4 g4 12.Bg2 dc4 13.Qc4 c6 14.b5 (14.e3 Be6 15.Qc2 a5–+) 14...Be6 15.Qc2 (15.Qa4 Qb6–+) 15...Bd5 (better is 15...Qa5!? 16.Kf1–+) 16.Bd5 Qd5 17.Rh2 Re8 18.Kf1 Nd7 19.bc6 Qc6 20.Qc6 bc6 21.e3 (21.Rb7 Nc5 22.Rb4 Rad8–+) 21...Rab8 22.Rc1 c5 23.Kg2 (23.Ne2 Rb2–+) 23...h5 (23...Rb2 24.Re1 Ra2 25.Re2–+) 24.Ne2 (24.Rc2 Ne5 25.Rc5 Nd3–+) 24...Rec8 (better is 24...Rb2 25.Kf1 Ra2 26.Rh1–+) 25.Nf4 Ne5 26.Rhh1 Rb2 27.d4 Nf3 28.dc5 Ra2 29.Nh5 Rc6 30.Nf4 Ra5 31.Nd3 Nd2 32.Rhd1 Nb3 33.Rb1 Nc5 34.Rdc1 Bf8 35.Rb8 Kg7 36.Rc4 Rb6 37.Rb6 ab6 38.Nf4 Ne6 39.Nd3 b5 40.Rc2 b4 41.Rb2 Rb5 42.Rb3 Nc5 43.Nc5? Bc5 44.f3 Kf6 45.e4 Ke5 46.ef5 Kf5 47.fg4 Kg4 48.h5 f5 49.h6 Rb6 50.h7 Rh6 51.h8B Rh8 52.Rb2 Rb8 53.Rc2 Bf8 54.Kf2 b3 55.Rb2 Bg7 56.Rb1 b2 57.Kg2 Rc8 58.Kf2 Rc2 59.Ke3 Rc1 (59...Rc1 60.Rb2 Bb2–+) 0–1. tyop (1750) – thekillergrob (1660), playok.com, 2012.

4.Nf3 A) 4...a5 A1) 5.b5 g4 (5...d5 6.b6 c6 7.Na4 Nbd7 8.Rb1 0–0 9.e3 Re8=) 6.Ne5 d6 7.Nd3 Bf5 8.b6 cb6 9.Rb1 Nc6=; A2) 5.a3 d5 (5...0–0 6.Ng5 d5 7.e3 ab4 8.ab4 Ra1 9.Ba1 Nc6=; 5...g4 6.Ne5 d6 7.Nd3 Bf5 8.e3 e5 9.Be2 Nbd7=) 6.e3 g4 7.Ne5 0–0 8.Be2 ab4 9.ab4 Ra1=; A3) 5.Nd5 ab4 (5...g4 6.Nf6 Bf6 7.Bf6 ef6 8.Nd4 ab4 9.e3 d5=; 5...Nd5 6.Bg7 Rg8 7.Bb2 g4 8.Nd4 ab4 9.e4 Nf4=) 6.e4 0–0 7.Ng5 c6 8.Ne3 h6 9.Nf5 d6=; A4) 5.ba5 g4 (5...d6 6.Ng5 0–0 7.f4 h6 8.Nf3 Ra5 9.e3 Nbd7+=; 5...0–0 6.g4 Nc6 7.h4 gh4 8.g5 Ne4 9.Rh4 d5=) 6.Nd4 d6 7.e4 0–0 8.Rb1 e5 9.Nb3 Be6=; B) 4...d5 B1) 5.e3 a5 (5...0–0 6.Ng5 a5 7.b5 Nbd7 8.Be2 a4 9.a3 Nb6+=; 5...g4 6.Ne5 0–0 7.a3 Nbd7 8.Ng4 Ne8 9.f4 f5+=) 6.ba5 g4 7.Ne5 0–0 8.Rb1 Ra5 9.d4 c5=; B2) 5.Ng5 a5 (5...Nc6 6.b5 Na5 7.e3 Bg4 8.Nf3 Qd6 9.h3 Bh5+=; 5...0–0 6.e3 a5 7.b5 Nbd7 8.Be2 a4 9.a3 Nb6+=) 6.ba5 0–0 7.e3 Ra5 8.Nb5 Bg4 9.Nf3 Nc6=; C) 4...d6 5.Ng5 0–0 (5...h6 6.Nf3 0–0 7.e3 e5 8.Be2 Bf5 9.0–0 Qe7+=; 5...a5 6.b5 0–0 7.e3 a4 8.a3 d5 9.Qe2 Nbd7+=) 6.a3 Nc6 7.e3 e5 8.Be2 Nd7 9.Nge4 Nb6+=; D) 4...g4 D1) 5.Nd4 d6 (5...d5 6.e3 a5 7.ba5 e5 8.Nb3 0–0 9.Be2 Nc6=) 6.e4 0–0 7.Qe2 e5 8.Nb3 Nc6 9.b5 Nd4+=; D2) 5.Nh4 d5 (5...d6 6.e3 0–0 7.h3 g3 8.fg3 a5 9.ba5 Ne4=) 6.Nb5 0–0 7.e3 a6 8.Nd4 Ne4 9.f3 Nd6–/+; D3) 5.Ne5 0–0 (5...d6 6.Nd3 Bf5 7.g3 c6 8.Bg2 Nbd7 9.b5 Rb8=; 5...a5 6.b5 d6 7.Nd3 Bf5 8.Rb1 Nbd7 9.e4 Ne4=) 6.e4 d5 7.Qe2 d4 8.Nb5 Nfd7 9.Nd3 Nb6=.

3.c4 c5

4.b5 Bg7 A) 5.d4 Qc7 (5...Ne4 6.Nd2 Qa5 7.e3 a6 8.ba6 Na6 9.Ngf3 g4 10.Qc2 f5+=; 5...cd4 6.Bd4 d6 7.Nd2 Nbd7 8.e3 e5 9.Bc3 Nc5 10.Nb3 Nfe4=) 6.e3 cd4 7.Bd4 d6 8.Bd3 0–0 9.Bf6 Bf6 10.Qh5 Re8–+; B) 5.h3 a6 (5...d5 6.cd5 Qd5 7.Nc3 Qf5 8.Nf3 0–0 9.g4 Qg6 10.Bg2 Rd8+=; 5...d6 6.Nf3 h6 7.Nc3 a6 8.Qa4 Nbd7 9.Rb1 Nb6 10.Qb3 ab5=; 5...h6 6.Nc3 0–0 7.Qc2 d6 8.Nf3 a6 9.e4 Nh5 10.a3 ab5=; 5...0–0 6.Nf3 h6 7.Qc2 a6 8.e4 d6 9.Be2 ab5 10.cb5 Be6=) 6.ba6 Na6 7.Nc3 Ne4 8.Ne4 Bb2 9.Rb1 Bg7 10.Ng5 Nb4+=; C) 5.Nc3 0–0 6.e3 d6 7.d4 cd4 8.ed4 a6 9.Bd3 d5 10.c5 ab5=; D) 5.e3 d6 6.d4 cd4 7.ed4 0–0 8.Bd3 d5 9.Nf3 dc4 10.Bc4 g4=.

4.bc5!? Qa5 A) 5.Nf3 g4 (5...Qc5 6.e3 g4 7.Bf6 ef6 8.d4 Qc6 9.Nfd2 d5 10.cd5 Qd5+/–; 5...Rg8 6.e3 g4 7.Ne5 Qc5 8.d4 Qb6 9.Qb3 Qb3 10.ab3 d6+=) 6.Ne5 Qc5 7.e3 d6 8.Bd4 Qc7 9.Qa4 Nc6 10.Nc6 Qc6=; B) 5.e3 Bg7 (5...Qc5 6.Bf6 ef6 7.Nc3 Na6 8.Nf3 Nc7 9.Be2 d5 10.Qb3 dc4+/–) 6.Nf3 h6 7.Be2 Na6 8.0–0 Nc5 9.d4 Nce4 10.Qc2 d6+/–; C) 5.e4+= Na6 (5...Nc6 6.e5 Ne4 7.e6 Qc5 8.ef7 Kf7 9.Qh5 Kg8 10.Nh3 d6+/–; 5...Bg7 6.Qe2 Qc5 7.e5 Ng8 8.d4 Qc6 9.d5 Qc7 10.Qe3 h6+/–; 5...Qc5 6.Nc3 Bg7 7.d4 Qa5 8.e5 Ng8 9.Qd2 f6 10.Bd3 Nc6+/–) 6.Qf3 Nc5 7.Bf6 ef6 8.Qf6 Rg8 9.Qe5 Be7 10.Qd4 Bf8=; D) 5.h4 Qc5 6.hg5 Qg5 7.Nf3 Qf5 8.Nc3 Bg7 9.Nd5 Na6 10.g4 Qg4+–.

4.bc5 Bg7 +/–.

4.h4 A) 4...gh4 5.bc5 Bg7 (5...Qa5 6.e4 Nc6 7.e5 Ne4 8.Rh4 Nc5 9.e6 f6 10.Bc3 Nb4+/–) 6.d4 b6 7.cb6 Qb6 8.Bc3 d5 9.e3 Qc6 10.Nf3 h3+/–; B) 4...g4 5.bc5 d6 (5...Bg7 6.e4 d6 7.cd6 ed6 8.d3 0–0 9.Nd2 g3 10.fg3 Ne4+/–) 6.cd6 Qd6 7.e3 Bg7 8.d4 g3 9.f3 0–0 10.Ne2 Nc6+=.

4.b5 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bg7 8.Nc3 (8.h3 d5 9.cd5 Qd5 10.Nc3 Qf5=) 8...0–0 9.e3 (9.e4 d6 10.Be2 b6=) 9...e6 (9...d6 10.Be2= (10.d4 cd4=) 10...Qa5=) 10.Nge2 (10.Nf3 h6+= (10...Ne8+=)) 10...d5= 11.Ng3 d4 12.Na4 b6 (12...Qd6 13.ed4 cd4 14.Bd3=) 13.Bd3 e5 14.0–0 Re8 15.Bf5 Nbd7 16.d3 Bb7 17.e4 Nf8 18.Bb2 Ng6 19.Bc1 Nf4 20.Ne2 Qc7 21.g3 Kh8? (better is 21...Ne2 22.Qe2 Ra8+=) 22.gf4+– ef4 (22...gf4 23.Qc2+–) 23.f3 (23.h4 f3 24.Nd4 cd4 25.hg5 Ng8+–) 23...Rg8 (23...Ng8 24.h4! f6 25.Re1+–) 24.Kh1 Bf8 25.Rg1 Bd6 26.Qf1 Rg7 27.h4! h6 28.hg5 hg5 29.Qh3 Kg8 30.Kg2 g4 31.fg4 Be5 32.Rh1 Kf8 33.Kf3 Bc8 34.g5 Rg5 35.Qh6 Rg7 36.Bf4 Bf5 37.Qf6!! Bg4 38.Kf2 Bf6 39.Bc7 Be2 40.Ke2 Rg2 41.Kf1 Ra2 42.Bd6 Kg7 43.Rg1 Kh6 44.Nb6 Bh4 45.Rh1 Ra1 46.Kg2 Ra2 47.Kf3 Rf2 48.Kg4 Rf6 49.Rh4 Kg6 50.Bf4 (50.Bf4 Re6 51.Nd5+–; 50.Bf8 Rf4 51.Kf4 f6 52.Nc8 Kf7 53.Rh8 Ke8 54.Nd6 Kd7 55.Rh7 Ke6 56.Ne8 f5 57.ef5) 1–0. Welling,Gerard (2360) – Haukenfrers,Dale, Western Canadian Open, Richmond CAN, 2004.

5.a4 Bg7 6.e3 ab5 7.ab5 Ra1 8.Ba1 d5 9.cd5 Qd5 10.Nc3 Qf5=.

5.Qa4 d6 6.Bf6 ef6 7.Nc3 Nd7 8.Nd5 Nb6 9.Nb6 Qb6 10.ba6 Bd7=.

5.Qa4 Bg7 6.Nf3 g4 7.Ng5 Rg8 8.Qc2 d6 9.Nc3 ab5 10.cb5 h6=.

5.Qa4 h6 6.d4 cd4 7.Bd4 d6 8.Bf6 ef6 9.Nc3 Nd7 10.Nd5 Nc5=.

5.ba6 Ra6 6.e4 d6= 7.Bf6 ef6 8.Nc3 f5 9.Bd3 fe4 10.Be4 Nc6=.

5.ba6 Na6 6.Nf3 g4 7.Ne5 Rg8 8.e3 Bg7 9.Be2 d6 10.Nd3 d5=.

5.e4 d6 6.ba6 Na6 7.Bf6 ef6 8.Nc3 f5 9.Bd3 fe4 10.Be4 Bg7=.

5.Nf3 g4 6.Ng5 ab5 7.cb5 Bg7=.

3.c4 d6

4.d4 c6 5.Qc2 Na6 6.a3 Nc7 7.Nd2 Bg4 8.e4 Bg7 9.Bd3 Bh5 10.f3 Bg6 11.Ne2 Ne6 12.d5 Nf8 13.h4 gh4 14.Rh4 e5 15.de6 Ne6 16.0–0–0 a5 17.g3 ab4 18.ab4 Qb6 19.Qb3 0–0 20.Nf4 c5 21.Ng6 fg6 22.b5 Nd4?? 23.Bd4+– cd4 24.f4 Nd7?? 25.c5+– Rf7 26.cb6 Nc5 27.Qd5 Nd3 28.Kb1 Nc5 29.Nc4 d3 30.e5 Na4 31.Rd3 Raf8 32.Nd6 h6 33.Nf7 Rf7 34.e6 Rf6 35.e7 Kh7 36.e8Q Rf8 37.Qf8! Bf8 38.Qf7 Bg7 39.Rd7 Nc3 40.Kc2 Ne4 41.Qg7# 1–0. ferminkatcho (1720) – viktor1111 (1915), kurnik, 2011.

4.Nf3 g4 5.Bf6 ef6 6.Nd4=.

4.Nf3 Bh6 5.Bf6 ef6= 6.Nc3 g4 7.Nd4 c6 8.d3 Rg8 9.e3 Be6 10.Be2+= Bd7 11.0–0+/– Na6 12.b5 Nb4 13.a3+– (13...Qe7 14.ab4 Be3 15.bc6 (15.fe3?! Qe3 16.Kh1 Qd4+–) 15...bc6 16.Nc6 (16.fe3?! Qe3 17.Kh1 Qd4+–) 16...Bc6 17.fe3 Qe3 18.Kh1+–) 1–0. Wall,Bill – Forest Liz, Internet, 2003.

4.Bf6 ef6 5.e3 h5 6.Be2 h4 7.Bg4 Nc6 8.Bc8 Qc8 9.b5 Ne5 10.Qc2 (10.d3!?=) 10...Qe6 11.d3 0–0–0 12.Nd2 Kb8 (12...d5!? 13.d4 Nc4 14.Nc4 dc4–/+) 13.Ne2 f5 14.Nd4 Qd7 15.N2f3 Bg7 16.Ng5 h3 17.Nh3 Rh3 (17...Nf3 18.Nf3 Ba1+–) 18.gh3+– Re8 19.0–0–0 f4 20.ef4 Ng6 21.Nb3 Nf4 22.Rhe1 Rc8 23.h4 Bf6 24.Qd2 Ng2 25.Rg1 Nh4 26.Qh6 (26.Qf4 Nf5+–) 26...Ng6 27.Rde1 Qf5 28.Qe3 Ne5 29.Kc2?? (better is 29.Rg3+–) 29...Nf3+= 30.Nd2 Nd4? (better is 30...Ng1!? 31.Rg1 d5+=) 31.Kb1 Qc5 32.Nb3 Nb3 33.ab3 Qa3 34.Kc2 Qb2+= 35.Kd1 Bd4 36.Qd2 Qb3 37.Qc2 Qc2 38.Kc2 Bf2 39.Ref1 Bg1 40.Rg1 a6 41.Rf1 Rh8 42.Rf7 Rh2 43.Kc3 ab5 44.cb5 Rh5 45.Kb4 Rc5 46.d4 Rc1 47.Rf8 Ka7 48.Rf7 Kb6 49.Rf5 c6 50.bc6 bc6 51.d5 c5 52.Ka4 Rc4 53.Kb3 Rd4 0–1. kaasparov – viktor1111 (1895), kurnik, 2012.

3.c4 e6

4.a3 d5=.

4.a3 d6 5.e3 a6 6.h3 Bg7 7.d4 h6 8.Bd3 Nbd7 9.Nd2 0–0 10.Ngf3 Re8 11.0–0 e5 12.de5 Ne5 13.Be2 Be6 14.Rc1 Nf3 15.Bf3 c6 16.Qc2 Qc8 17.Ne4 Ne4 18.Bg7 (worse is 18.Be4 Bb2 19.Qb2 Bh3+=) 18...Kg7 19.Be4 f5 20.Bf3 Qd7 21.Rfd1 Qf7 (better is 21...g4!? 22.hg4 fg4+=) 22.Rd6+– Rad8 23.c5 Rd6 24.cd6 Qd7 25.Rd1 Rf8 26.e4 f4 (26...fe4 27.Qe4 Rf7 28.Qe5 Rf6 29.Be4+–) 27.e5 Qf7 28.Qe2 Bb3 29.Rd2 Bc4 30.Qd1 Rd8 31.Bg4 Be6 32.Be6 Qe6 33.Qg4 (better is 33.Qe2+–) 33...Qe5+= 34.Rd1 (better is 34.Qd1+=) 34...Rd6–/+ 35.Rd6 Qd6 36.h4 Kg6 37.hg5 hg5 38.Qc8 Qd1 (better is 38...Qe7–/+) 39.Kh2= Qh5 40.Kg1 Qd1 41.Kh2 Qh5 42.Kg1 Qd1 ½–½. kaasparov – milanio, kurnik, 2013.

4.e3 Bb4!? 5.Nf3 Rg8+=.

4.e3 d6 5.d4+= h6 6.b5 Bg7 7.Nd2 a6 8.a4 Nbd7 9.Ngf3 0–0 (9...g4 10.Nh4=) 10.Be2+= Re8 11.0–0 Nf8 (11...e5 12.Nb3+=) 12.e4 Ng6 13.g3 (13.ba6 ba6 14.Rb1 Rb8+=) 13...e5 14.d5 (14.de5 de5 15.Ne1 Bh3=) 14...Bg4 (14...Bh3!?+=) 15.Ne1 Bh3 16.Ng2 Qc8 17.Bc3 Rf8 18.Nf3?? (better is 18.ba6 ba6 19.Qc2=) 18...Ne4–+ 19.Qc2 (better is 19.Bb2!?–+) 19...Nc3 20.Qc3 Bg2 21.Kg2 Qg4 22.Rad1 Nf4 23.Kh1 Ne2 24.Qe3 Nd4 25.Ng1 f5 26.h3 Qh5 27.Kg2 f4 28.Qe4 fg3 29.fg3 Rf1 30.Rf1 Rf8 31.Rf8 Bf8 32.c5 Qf7 33.cd6 cd6 34.ba6 ba6 35.Qg4 Qd5 36.Kh2 Kg7 37.Qd7 Qf7 38.Qg4 Qf2 39.Kh1 e4! 40.Qd7 Qf7 41.Qg4 Nf3 42.Kg2 Ng1 43.Kg1 d5 44.Qe2 Bc5 45.Kh2 Qf2 (45...Qf2 46.Qf2 Bf2–+) 0–1. rom49szachy (1610) – milanio, playok.com, 2012.

3.c4 Bg7

4.a4 0–0 5.d4 d5 6.c5 c6 7.e3 Nbd7 8.h3 Ne4 9.Nd2 Nd2 10.Qd2 Nf6 11.f3 Nh5 12.Ne2 f5 Black claimed a win on time 0–1. themuttsknutts – laffin (2040), ChessWorld.net, 2013.

4.b5 d5 5.e3 c5 6.a4 (6.d4 cd4 7.Bd4 0–0=) 6...d4 7.Be2 (7.ed4 cd4 8.a5 g4=) 7...e5 8.d3 0–0 (8...g4 9.h3=) 9.Nf3 a6 (9...Ng4 10.ed4 ed4 11.Bc1=) 10.Ne5 White fights for the Initiative 10...ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nd2 de3 (13...Nd5! 14.ed4 Nc3 15.Bc3 Qc3+=) 14.fe3+– Nfd7 (14...Qc7 15.0–0+–) 15.Nd7 Nd7 16.Bg7 Kg7 17.0–0 Ne5 (17...f5 18.Qc2+–) 18.Ne4 h6 (18...Rd8 19.Ng5 f5 20.Qc2+–) 19.Nc5 b6 20.Ne4 Be6 (20...Qa3 21.Nf2+–) 21.d4 Nc4 (21...Qa3 22.de5 Qe3 23.Nf2 Qe5+–) 22.Bc4 (better 22.d5 Ne3 23.Qd4 f6 24.de6 Nf1 25.Nf6+–) 22...Bc4+– 23.Rf2 Qa8? (better 23...Ra8+=) 24.Qf3?? (better 24.Nd6 Bd5 25.Nf5 Kg6 26.Ne7 Kg7 27.e4 Be4 28.d5+–) 24...f5 (24...Qa1 25.Rf1 Qf1 26.Qf1 Bf1 27.Kf1–/+) 25.Nd6 (better 25.Ng3 f4 26.Qa8 Ra8 27.ef4 Ra1 28.Nf1 gf4 29.Rf4 Bb5 30.g4=) 25...Qf3?? (better 25...Qa1 26.Rf1 Qf1 27.Qf1 Bf1 28.Kf1 Kg6–/+) 26.Rf3 (26.gf3!? Be6 27.e4 Kf6+–) 26...Be6+– 27.Kf2 (27.Rf2 Bd7 28.Rb2 Rf6+–) 27...g4 (27...Bd7 28.g4 f4 29.e4+–) 28.Rf4 Kg6 (better 28...Bd7!? 29.e4 fe4+–) 29.e4+– (29.e4 Rf6 30.ef5 Bf5 31.Nf5 (31.Rf5?! Rd6 32.Rf4 h5+–) 31...Rf5 32.Rf5 Kf5 33.Ke3+–) 1–0. RichardSommer (1990) – Arcana_Night_Joker (1900), lichess.org, 2020.

4.Qc2 d6 5.f3 (5.e4 e5=) 5...c5 6.b5 a6 7.e4 ab5 8.cb5 0–0 9.a4 b6 10.g4 Nbd7 (10...e6 11.h4 gh4 12.Be2=) 11.d3 (11.h4 gh4 12.Rh4 h6+=) 11...Bb7 (11...e6 12.h4 gh4 13.Qf2=) 12.Bg2 (12.h4 gh4 13.g5 Ne8 14.Bg7 Ng7=) 12...Ne5 13.h4 gh4 14.Rh4 e6 15.g5 (better 15.Rh3=) 15...Ne4 (better 15...Nd5!? 16.ed5 Qg5=+) 16.fe4+= (16.de4? Qg5 17.Rg4 Ng4 18.fg4 Bb2 19.Qb2 f5–+; worse 16.Re4 Nd3! 17.Qd3 Be4 18.fe4 Bb2–+) 16...Qg5 17.Rh3 f5 18.Qd2?? (better 18.Ra2+–) 18...Qd2–/+ 19.Kd2? (better 19.Nd2 Nd3 20.Rd3 Bb2 21.Ra2=+) 19...fe4–+ 20.Rg3 (20.Ke1 Nd3 21.Rd3 Bb2 22.Rg3 Kh8–+) 20...Rf2 21.Ne2 ed3 22.Bb7 Re2 23.Kc1 (23.Kd1 Rf8 24.Nd2–+) 23...Rf8 24.Rg1 (24.Bg2 Rff2 25.Kd1 Rb2–+) 24...Rc2 25.Kd1 Rb2 (25...Ng4 26.Nd2 Rf2 27.Nc4 Rc4 28.Bf3 Ne3 29.Ke1 Rcc2 30.Rg7 Kf8 31.Rg8 Kg8 32.a5 Rf1) 26.Nc3 Nc4 27.Rc1 (27.Ra2 Ne3 28.Kc1 Ra2 29.Rg7 Kg7 30.Na2–+) 27...Ne3 28.Ke1 Rf1! 29.Rf1 Bc3 Annihilates a defender: c3 30.Rc3 Re2 0–1. Delboy Smith (1825) – despair (2085), ChessWorld.net, 2009.

4.Qc2 Rg8 5.d3 d6 6.Nd2 e5 7.Rd1 Qd7 8.Ngf3 Qf5 9.e4 Qf4 10.g3 Qg4 11.Bg2 Qd7 12.0–0 g4 13.Nh4 Nh5 14.Nf5 Bf6 15.Rfe1 Ng7 16.Ng7 Rg7 17.Nf1 h5 18.d4 h4?? (better is 18...ed4 19.Bd4 Bd4 20.Rd4 Nc6+=) 19.de5+– Bg5 20.ed6 Rg6 21.e5 hg3 22.fg3 (worse is 22.Ng3 Nc6+–) 22...Nc6 (22...Rh6+–) 23.e6! Re6 (23...fe6 24.Qg6 Double attack (24.Qg6 Deflection; 24.Qe4 Decoy); 23...Re6 24.Qf5 Double attack (24.Qf5 Decoy)) 24.Qh7 cd6 25.Qg8 Ke7 26.Qg5 Ke8 27.Re6 (better is 27.Bc6 Qc6 28.Bf6 Qb6 29.c5 Qa6 30.Qg4 Kd7+–) 27…Qe6. sagonek – amtiredof, kurnik, 2011.

4.Nc3 0–0 5.Qc2 Nc6 6.a3 Nd4 7.Qd3 Ne6 8.g3 a5 9.Bg2 d6 10.Nf3 g4 11.Nd4 Nd4 12.Qd4 ab4 13.ab4 Ra1 14.Ba1 e5 15.Qd3 c6 16.0–0 Be6 17.Rc1 d5 18.cd5 Nd5 19.Nd5 Bd5 20.Bd5 Qd5 21.Qd5 cd5 22.Rc7 Ra8 23.Bb2 h5 24.Rb7 Ra2 25.Bc1 Rc2 26.Ba3 Bf8 27.Ra7 Rd2 28.Kf1 f5 29.Ra5 f4 30.gf4 ef4 31.Ke1 Ra2 32.Ra8?? Ra3!–+ 33.Ra3 Bb4 (34.Kd1 Ba3–+) 0–1. Arran – marekt, ChessWorld.net, 2005.

4.Nc3 Nh5 5.d4 f5 (5...d6 6.e4 Nf6 7.Be2+=) 6.Nf3 (6.e4 Nf6 7.ef5 0–0+/–) 6...e6 (6...g4 7.Ng1=) 7.g3 (7.e3 g4 8.Nd2 d6+=) 7...0–0 8.Bg2 Nc6 9.b5 Ne7 10.0–0 (10.Ng5!? Nf6 11.0–0+/–) 10...Ng6 11.a4 c5 (better is 11...g4!? 12.Ne1 f4+=) 12.dc5+/– a6 13.e3 ab5 14.cb5 Qa5 (14...g4 15.Nd4+–) 15.Qb3 (15.Ng5 Nf6+–) 15...Kh8? (15...g4 16.Nd2+–) 16.Qc2 (better is 16.Ng5!? Qd8 17.Nh3 Nf6+–) 16...Qb4 17.Nd4! e5? (17...Bd4 18.Qd1) 18.Nb3 (better is 18.Nd5 Qa5 19.Nf5+–) 18...f4?? (18...Qc4+–) 19.Ba3 Qa4 (19...Qc4 20.Bd5 Qf1 21.Rf1 fe3 22.fe3 Rf1 23.Kf1+–) 20.Na4 Ra4 21.Bb2 Ra1 22.Ra1 fe3 23.fe3 Ne7 24.Ra8 Nf6 25.Be5 Nfd5 26.Bg7 Kg7 27.Qb2 Kg8 28.Bd5 Nd5 29.Qd4 Nc7 30.Ra5 Ne6 31.Qd5 Kg7 32.Nd4 Rf6 33.Nf5 Kg6 34.Ne7 Kh5 35.Nc8 d6 36.Qd1 Kg6 37.Nd6 Nc5 38.Ra8 Kg7 39.Ne8 Kf7 40.Nf6 Kf6 41.Qd4 Kg6 42.Qc5 Kh5 43.Rh8 (43.Rh8 Kg6 44.Qd6 Kf5 45.Rf8 Kg4 46.Qd1 Kh3 47.Qh5#; 43.Rg8 Kg4 44.Kg2 h6 45.Qc8 Kh5 46.Qh3#) 1–0. kannisogoet – katarovi, kurnik, 2012.

4.d3 d6 5.e4 Nc6 6.a3 Bd7 7.Nf3 g4 8.Nfd2 0–0 9.Be2 e5 10.0–0 Nd4 11.Bd4 (11...ed4 12.f3=) =. hal1958 – waller, playchess.de, 2003.

4.d4 d5 5.e3 c6 (5...Bf5!?=+) 6.h3 (6.Nc3 g4=) 6...0–0 (6...a5 7.b5=) 7.Nf3+= h6 8.Be2 (8.Nc3 Be6=) 8...Bf5 (8...Be6 9.Nbd2=) 9.Nbd2 Nbd7 (9...a5 10.b5=) 10.0–0 (10.g4 Be4+=) 10...Re8 (10...a5 11.b5+=) 11.Nb3 (11.a4 Qc7+=) 11...Qb8 (11...Ne4 12.cd5 cd5 13.Nbd2=) 12.Rc1 e5? (better 12...Ne4!?=) 13.de5+– dc4?? (better 13...Ne5 14.Ne5 Re5 15.Be5 Qe5+–) 14.ef6+– cb3 (14...Bf6 15.Bf6 cb3+–) 15.fg7 ba2 16.Nd4 (better 16.Bc4!? Qd8 17.Ba2 Be6+–) 16...Be4 17.f3 (17.Bc4 Qe5 18.Qb3 Qe7+–) 17...Bd5 (17...Bg6 18.e4 Qf4+–) 18.e4 1–0. mal10s (1640) – chessgeneral1 (1695), gameknot.com, 2018.

4.d4 h5 5.e3 h4 6.Be2 h3 (better is 6...d5!?=) 7.Nh3+/– g4 (7...Bh6 8.Qa4+/–) 8.Nf4 (8.Bg4 Ng4 9.Qg4 Bf6+–) 8...g3 (8...d6!?+/–) 9.fg3+– Ne4 (9...d6 10.Nc3+–) 10.0–0 d5 (10...d6 11.Nc3 Nc3 12.Bc3+–) 11.Nd5 Qd5 (11...c6 12.Nf4 Qd6+–) 12.cd5 Nc6 (12...Nf6 13.Nc3 a5+–) 13.dc6 e5 14.de5 (better is 14.Qc2 Ng3 15.cb7 Bb7 16.Bb5 c6 17.Bc6 Kf8 18.Bb7 Nf1 19.Ba8 Ne3 20.Qc5 Kg8 21.de5 Rh4+–) 14...Be6 15.cb7 Rh2 16.Kh2 (16.Kh2 Rb8 17.Qa4 Ke7 18.Qa7 Rh8 19.Kg1+–; 16.ba8Q Bc8 17.Qc8 Ke7 18.Qdd7#) 1–0. bluepiramid2 – markos0410, kurnik, 2012.

4.e3 d5 5.cd5 Qd5 6.Nf3 Qd8 (6...g4 7.Ne5=) 7.Be2 (7.Ng5 Nc6+–) 7...h6 (7...g4 8.Ne5+=) 8.0–0 Nc6 (8...0–0 9.d4+=) 9.b5 Nb8 10.a4 (10.d4 Bf5+–) 10...c6 (10...a6 11.d4+=) 11.Nc3+– cb5 12.Nb5 0–0 13.Rc1 Nc6 14.d4 Bg4 15.Nd2 (15.Ne5 Be2 16.Qe2 a6 17.Nc6 bc6+–) 15...Be2 16.Qe2 a6 17.Nc3 Rc8 18.Nce4 Ne4 19.Ne4 Nb4 (19...Qd5 20.Nc5+=) 20.Rfd1 (20.Rc8!? Qc8 21.Ba3+–) 20...Qa5+= 21.Rc8 Rc8 22.Nc5 (22.Nc3!?=) 22...b6=+ 23.Nb3 (23.Nd7 Rd8 24.Bc3 Rd7=+) 23...Qa4–/+ 24.Nd2 (24.Na1 Qa2–/+) 24...Qc2 (24...Rc2 25.Ba1–/+) 25.Ba3 a5 (25...Na2 26.Ra1 a5 27.Be7 Re8–+) 26.Kf1? (26.Bb4 ab4 27.Kh1 b3–/+) 26...e6?? (26...Nd5 27.Ra1 e5 28.Qa6–+) 27.Nf3? (27.Bb4 ab4 28.Qe1 b3–/+) 27...Qc4 (better 27...Qe2!? 28.Ke2 Nd5–+) 28.Qc4=+ Rc4 29.Bb4 (better 29.Nd2!? Rc2 30.Bb4 ab4 31.Ke2=+) 29...Rb4–+ (29...ab4?! 30.Rb1=+) 30.Rb1?? (better 30.Ra1–+) 30...Rb1 31.Ke2 b5 (31...a4 32.Nd2 Rb2 33.Kd3–+) 32.Kd2 (32.Nd2 Rg1 33.e4 Rg2–+) 32...b4 (32...Rb2 33.Kd3–+) 33.Kc2 (33.h4 g4 34.Ne1 Rb2 35.Kd3 Rf2–+) 33...Rh1 (better 33...Rf1!? 34.Kd3 Rf2 35.Nd2–+) 34.Kb3 Rf1 35.Ka4 (35.Nd2 Rf2 36.Nc4 Rg2 37.Na5 Rh2 38.Kb4 g4–+) 35...Rf2 36.Ka5 Rg2 (36...b3 37.Nd2 Rd2 38.Kb6 Rc2 39.Kb5 b2 40.Ka4 b1Q 41.d5 Ra2) 37.Kb4 Rf2 (37...g4 38.Ne1 Rh2 39.Kc3–+) 38.Ne1 Rh2 39.Nd3 Re2 40.Kc4 Re3 41.Nc5 g4 42.d5 ed5 43.Kd5 g3 44.Nd7 g2 45.Kc4 (45.Kd6 g1Q 46.Kc6 Rc3 47.Kb7 Qg2 48.Ka7 Rc7 49.Ka6 Qb7 50.Ka5 Bc3 51.Ka4 Qb4) 45...g1Q 46.Kc5 (46.Nf6 Bf6 47.Kc5 Rc3 48.Kb5 Qf1 49.Ka5 Bd8 50.Kb4 Qc4) 46...Qd1 (46...Rc3 47.Kb4 Qb1 48.Ka4 Rc4 49.Ka5 Bc3 50.Ka6 Ra4) 47.Kc6 Rc3 48.Nc5 Rc5! 49.Kc5 Decoy theme: c5 49...h5 (49...Qd4 50.Kc6 Qc4 51.Kb7 Qb5 52.Kc7 Be5 53.Kd8 Qc6 54.Ke7 Bf6) 50.Kc6 h4 51.Kc5 h3 52.Kc6 (52.Kb5 h2 53.Kb4 Qd4 54.Ka5 Qc3 55.Kb5 h1Q 56.Kb6 Bd4 57.Kb5 Qhc6) 52…h2 (52...h2 53.Kb6 Qd4 54.Ka5 Qc5 55.Ka4 h1Q 56.Kb3 Qf3 57.Ka4 Qd1) 0–1. Markzela (1815) – Frederic_Schmidt, lichess.org, 2020.

4.e3 g4 5.d4 d5 6.Nc3 c6 7.b5 Nbd7 8.Nge2 Nb6 9.bc6 Nc4 10.cb7 Bb7 11.Rb1 0–0 12.Ng3 Rb8 13.Nf5 Ba6 14.Qc2 Ne4?? 15.Ne4+– de4 16.Bc4 Bc4 17.Bc3 Qd7 18.Qe4 Qe6 19.Qc2 Bf6 20.e4 Rb1 21.Qb1 Ba2 22.Qc2 Rc8 23.0–0 Bb3 24.Qb2 Qe4 25.Ne7 Be7 26.Qb3 Qd3 27.Qb7 Qc3 28.Qe7 Qd4 29.Qg5 Qg7 30.Qd5 Rc2 (30...Rb8 31.Qa5=) ½–½. Milde,Lars (1970) – Osthus,Reinhard (1700), TT–04.41 TSC, 2002.

4.e3 h5 5.Nf3 d6 (5...g4!? 6.Nh4 d6=) 6.Ng5+– e5 7.Nf3 h4 8.b5 h3 9.gh3 Bg4?? (9...Rg8 10.d4 ed4 11.Bd4+–) 10.Be2 (better 10.hg4 Nbd7 11.g5+–) 10...Bh3+– 11.Rg1 Kf8 (11...Rg8 12.d4 e4 13.Nfd2+–) 12.Nc3 Nbd7 13.Ng5 (13.d4 Qe7+–) 13...Bf5+– 14.h3 Qe7 15.Bf3 (15.e4 Bg6+–) 15...Rb8 (15...Nc5!? 16.Ba3 Nd3 17.Ke2 e4+=) 16.Bd5 (16.Nd5 Qd8+–) 16...Bg6 17.Qf3 (17.d3 Nc5 18.Nce4 Nfe4 19.Ne4 c6 20.Nc5 cd5=) 17...c6 (better 17...Nc5 18.Kf1 Qd7=) 18.bc6?? (better 18.Be4 Ne4 19.Nge4+–) 18...bc6–/+ 19.Bc6 Rb2 20.Bd5 (20.Nge4 Nb8 21.Bd5–/+) 20...Rh4 (20...Nc5 21.Qg2 Rg8 22.Qf1–+) 21.Qg3–/+ Rh5 (21...Rh6!?–/+) 22.Nf7=+ Nh7?? (better 22...Bf7 23.Qg7 Ke8 24.Bf7 Qf7–/+) 23.Qg6+– Qf6 (23...Nhf6 24.Qg7 Ke8+–) 24.Qh5 Rd2 25.Kd2 Qf2 26.Ne2 Ndf6 27.Qf3 (better 27.Qg6 Ke7 28.Qg7+–) 27...Ke7 (27...Qf3 28.Bf3 Kf7+–) 28.Qf2 Kd7 29.Qf5 Kc7 (29...Ke7 30.Qe6 Kf8 31.Ne5 Ne4 32.Ke1 Be5 33.Rg8) 30.Nc3 (30.Rab1 Nd5 31.cd5 e4 32.Rgc1 Bc3 33.Rc3) 30...Nf8 (30...Nd5 31.Nd5 Kb7 32.Qd7 Kb8 33.Rab1 Ka8 34.Qc6) 31.Nb5 (31.Qb1 Nd5 32.Nd5 Kc8 33.Nd6 Kd7 34.Qb7 Kd6 35.Qe7 Kc6 36.Qc7) 31...Kb6 32.Qc8 N8d7 (32...Ne6 33.Qb7 Ka5 34.Qa7 Kb4 35.Rab1) 33.Qb7 (33.Qc7 Ka6 34.Qa7) 33...Kc5 34.a4 (34.Qa7 Nb6 35.Qa3) 34...Kb4 (34...Ne4 35.Be4 Nb6 36.Qc7 Kb4 37.Rab1 Ka4 38.Qa7) 35.Ne5! a6 (35...de5 36.Rgb1 A classical mating theme) 36.Nd3 (36.Rgb1 Ka5 37.Nc6) 36...Kb3 (36...Ka5 37.Qc7 Nb6 38.Qb6 Kb6 39.a5) 37.Nd6 (37.Nd6 Nb6 38.Qb6; 37.Rgb1) 1–0. RichardSommer (2045) – hrairb (2020), lichess.org, 2020.

4.Nf3=.

4.g3 d6 5.Bg2 e5 6.d3 h5 7.h4 g4 8.Nc3 Bf5?? (8...0–0 9.Qd2+=) 9.Qb3?? (9.Bb7 Nbd7 10.Ba8 Qa8+–) 9...0–0?? (9...c6 10.e4 Be6 11.Nge2=) 10.e4?? Bg6 11.Nge2 Nc6 12.a3 a5 13.b5 Nd4 14.Nd4 ed4 15.Ne2 Nd7 16.Bd4 Nc5 Black plans a4 17.Qc3 Bd4 18.Nd4 Qf6 19.0–0 a4 20.Rac1 Rae8 21.Rfd1 Qe5 22.Ne2 Nb3 23.Qe5 de5 24.Rc3 Rd8 25.Nc1 Nc5 26.Rc2 b6 27.Rcd2 Rd6 28.d4 ed4 29.e5 Re6 30.Rd4 Re5 31.Rf4?? Rfe8 32.Bd5?? Kg7 33.Kg2+= Re1 34.Rfd4 Rd1 35.Rd1= Re5 36.f3 Bf5 37.fg4 Bg4 38.Rd2 Re3 39.Rf2 f6 40.Bf3 Ra3 41.Bg4 hg4 42.Re2 Kf7 43.Rd2 Ra1 (43...Ra1 44.Ne2 a3–+) 0–1. ferminkatcho (1770) – viktor1111 (1830), kurnik, 2011.

3.e3 a6

4.a4 e6 5.b5 d6 6.Nf3 h6 7.Bd3 Bg7 8.0–0 0–0 9.c4 Nbd7 10.Nc3 Nc5 11.Bc2 e5 12.d4 e4 (12...ed4!? 13.ed4 Ne6+=) 13.Nd2 Nd3 14.Bd3 (14.Nde4 Nb2 15.Qe2 ab5 16.ab5 Be6 17.Nf6 Qf6+=) 14...ed3 15.Nf3 Bg4 16.Qd3 Bf3 17.gf3 Nd7 18.Ne4 f5 19.Ng3 f4 20.Nh5 Qe8 21.Ng7 Kg7 22.d5 Ne5 23.Be5 Qe5 24.e4 Rf6 25.ba6 ba6 26.c5! Qe8 (26...dc5 27.Rac1 Decoy) 27.c6+– Qc8 28.Kg2 g4 29.Rg1 Kh8 (better is 29...h5+–) 30.Qd4 Qf8 31.fg4 Qg7 32.f3 h5 33.h3 hg4 34.hg4 Rh6 35.Qg7 Kg7 36.Rh1 Rh1 37.Rh1 Rb8 38.Rh5 Rb2 39.Kh3 Rb3 40.Kg2 Rb2 41.Kf1 Ra2 42.Rf5 Ra4 43.Rf4 Rd4 44.Ke2 a5 45.Ke3 Rc4 (45...Rd1 46.Rf5+–) 46.g5 (better is 46.e5 Rc5 47.Kd4 Rc1 48.ed6 cd6+–) 46...a4 47.Rh4 a3 48.Rh2 Rb4 49.Ra2 Rb3 50.Kf4 Kg6 51.Kg4 Rc3 52.f4 1–0. avinoam – milanio, kurnik, 2012.

4.Be2 e6 5.a3 h6 6.d4 Bg7 7.Nf3 d6 8.Nbd2 Nbd7 9.c4 Nf8 10.Qc2 Ng6 (10...g4 11.Ng1+=) 11.h3 0–0 12.0–0 Nd7 13.Nh2 e5 14.Bd3 c5 (14...ed4 15.Bd4 Nde5 16.Be4+=) 15.dc5 dc5 16.Bg6 fg6 17.Qg6 Nf6 (better is 17...Qb6 18.Qb6 Nb6+/–) 18.Be5?? (better is 18.Nhf3+–) 18...Qd2+= 19.Rad1 Qe2 20.Bf6 (better is 20.Rd6 Ne8 A) 21.bc5?? Bf5 (21...Qc4?! 22.Bg7 Ng7 23.Qh6=) 22.Bg7 Bg6 (22...Ng7?! 23.Qh6 Qc4 24.Qg5+=) 23.Bf8 Nd6 (23...Kf8?! 24.Rg6 Qc4 25.f4–+) 24.Bd6 Bd3–+; B) 21.Bg7 Ng7 22.Qh6 cb4 23.Rg6=) 20...Rf7?? (better is 20...Rf6 21.Rd8 Rf8 22.Rf8 Kf8 23.bc5 a5+=) 21.Bg7 (21.Rd8 Rf8 22.Qg7) 21...Rg7 (21...Bf5 22.Qh6 Rg7+–) 22.Rd8 1–0. mihai740609 – milanio, kurnik, 2013.

3.e3 d5

4.Na3 A) 4...g4 A1) 5.Ne2 Nbd7 (5...Rg8 6.Nf4 Nc6 7.Bf6 ef6 8.c3 Bh6 9.Bd3 a5; 5...Nc6 6.b5 Na5 7.Bc3 e5 8.Qc1 c6 9.Be5 Ba3; 5...Bg7 6.Nf4 0–0 7.h3 e5 8.Be5 Nc6 9.Bf6 Qf6) 6.c4 e5 7.Nc3 a5 8.Nd5 ab4 9.Nc2 Nd5; A2) 5.h3 Bg7 (5...Na6 6.Bf6 ef6 7.c3 f5 8.hg4 fg4 9.Rh5 Be6) 6.hg4 Bg4 7.Be2 h5 8.Nf3 Nc6 9.b5 Nb4; B) 4...a6 5.Nf3 Nc6 (5...Rg8 6.Bf6 ef6 7.c3 Nc6 8.Bd3 Bg4 9.Qa4 Bf3) 6.c4 Rg8 7.Nc2 e6 8.b5 ab5 9.cb5 Na5; C) 4...a5 5.b5 Nbd7 (5...Rg8 6.Nf3 g4 7.Ne5 Nbd7 8.Bd3 e6 9.Nd7 Bd7) 6.Be2 Bg7 7.Nf3 g4 8.Ne5 Ne5 9.Be5 Rg8.

4.c4 A) 4...Nc6 5.b5 Na5 6.cd5 Bg7 7.Qa4 b6 8.Nf3 g4 9.Bf6 Bf6; B) 4...Bg4 5.Qb3 (5.Nf3 Nc6 6.b5 Na5 7.cd5 Qd5 8.Qa4 Bf3 9.Nc3 Qd7) 5...e5 (5...d4 6.h3 Bh5 7.ed4 a5 8.b5 Nbd7 9.Qe3 Nb6) 6.h3 Bh5 7.Nf3 Bf3 8.gf3 d4 9.h4 Rg8; C) 4...Bg7= C1) 5.h4 g4 6.cd5 c6 7.Qa4 Bd7 8.d6 ed6 9.Nc3 Na6; C2) 5.Nc3 0–0 (5...Nc6 6.Nf3 g4 7.cd5 Nd5 8.b5 gf3 9.bc6 fg2) 6.cd5 Nd5 7.Nf3 Nb4 8.Ng5 Nd3 9.Bd3 Qd3; C3) 5.cd5 0–0 6.h4 g4 7.Bf6 Bf6 8.Nc3 c6 9.Nge2 Na6.

4.Be2 Qd6 5.a3 Bg7 6.Nf3 g4 7.Ne5=.

4.Be2 Bg7 5.Nf3 Nc6 6.b5 g4 7.bc6=.

4.Nf3 a6 5.Be2 (5.Ng5 Nc6+/– 6.a3 Bf5 7.Bd3 Bd3 8.cd3 Qd6 9.Nf3 Rg8; 5.a3 Bh6 (5...Nc6 6.Ng5 Bf5 7.Bd3 Bd3 8.cd3 Qd6 9.Nf3 0–0–0; 5...g4 6.Bf6 ef6 7.Nd4 c5 8.bc5 Bc5 9.Nb3 Be7) 6.h4 g4 7.Bf6 ef6 8.Nd4 Nc6 9.Nc6 bc6; 5.c4 Nc6 (5...g4 6.Ne5 Nc6 7.Qa4 Qd6 8.c5 Qe6 9.Na3 Kd8) 6.cd5 Qd5 7.Nc3 Qf5 8.Qa4 Bd7 9.b5 Ne5) 5...h6 (5...Qd6 6.a3= (6.Be5 Qb4 7.Nc3 Qa5 8.Nd4 c6 9.h4 Nbd7) 6...Nc6 7.h3 Bf5 8.Nc3 d4 9.Nd4 Nd4; 5...Nc6 6.Ng5 Rg8 7.h4 h6 8.Bf6 ef6 9.Nh3 Bb4; 5...Rg8 6.Ne5 Bg7 7.0–0 Nc6 8.Nc6 bc6 9.Bd4 a5) 6.0–0 (6.Bf6 ef6 7.c3 (7.a3 Nc6 8.Nc3 Be7 9.0–0 0–0) 7...Nc6= 8.Na3 Bd6 9.Nc2 0–0; 6.c4 Nc6 7.cd5 Qd5 8.Nc3 Qd8 9.Ne4 Bf5) 6...b5 (6...Bg7 7.c4= dc4 8.Bc4 Nc6 9.Ne5 0–0; 6...Nc6 7.a3 Bg7 8.Nc3 Bf5 9.Na4 Qd6) 7.a3 (7.a4 ba4 8.c4 Bd7+= (8...Bg7 9.Qa4 Nbd7) 9.cd5 Bg7) 7...Nc6 (7...e6 8.d3+= (8.Ne5 Bd6 9.f4 0–0) 8...Nc6 9.Nbd2 a5) 8.Nc3 (8.a4 ba4 (worse is 8...Nb4 9.ab5 Bf5 10.Nd4+–; 8...Bd7 9.Nc3 Nb4) 9.Bf6 (9.Ne5 Qd6) 9...ef6+=; 8.Ne5 Bb7 9.Nc6 Bc6) 8...e6 (8...g4 9.Ne1= (9.Nh4 Qd7) 9...Qd6; 8...Qd6 9.a4 g4) 9.d4 (9.a4 ba4+/– (9...g4 10.Nd4 Nd4 11.ed4 ba4 12.Ra4 Rb8=)) 9...Bd6 10.g3 (better is 10.Bd3=) 10...e5?? (better is 10...Bb7=) 11.de5+– Be5 12.Ne5 Ne5 13.f4 Nc4 (13...gf4 14.ef4 Ng6 15.Nb5 ab5 16.Bb5 Kf8+/–) 14.Bc1?? (14.Bc4 bc4 15.fg5 hg5 16.Nd5 Nd5 17.Bh8 Be6+–) 14...Bf5?? (14...Bh3 15.Rf2 Rb8 16.Qd4 gf4 17.Qf4+/–) 15.a4 (better is 15.fg5!? Bc2 16.Qd4 hg5 17.Rf6 Be4+–) 15...0–0? (better is 15...Bh3 16.Rf2 Nd6+/–) 16.ab5 ab5 (16...Bh3 17.Bc4 dc4 18.fg5 Bf1 19.Qf1+– (worse is 19.Kf1 Qd1 20.Nd1 ab5 21.Ra8 Ra8+=; 19.gf6 Qd1 20.Nd1 ab5 21.Ra8 Ra8+=)) 17.Ra8 Qa8 18.Nb5 c6? 19.Nd4 Bd7? 20.fg5 Nh7 21.gh6 Qe8 22.Qd3 Ne3 23.Be3 Qe5 24.Nf3 Qd6 25.Bc5 Qg6 26.Qg6 fg6 27.Bf8 Kf8 28.Ne5 Ke8 29.Ng6 Bh3 30.Rf4 Be6 31.Bh5 Kd7 32.Nf8 Nf8 33.Rf8 Ke7 34.Re8 Kd6 35.h7 (35.h7 Bd7 36.Rb8 c5 37.h8Q cb4 38.Qf8 Kc7 39.Qf4 Kc6 40.Qb4 Be6 41.Be8 Kc7 42.Qb6) 1–0. Neumann,Frank (1635) – Korn,Lothar, remoteschach.de, 2010.

4.Nf3 g4 5.Ne5= Nc6 6.Bb5 Qd6 7.Bd4 a6 8.Bc6 bc6 9.a3 a5.

4.Nf3 g4 5.Ne5 Qd6 6.a3 Bg7 7.d4+=.

4.Nf3 g4 5.Ne5= Bg7 6.Bd4 a5 7.b5 Qd6 8.Bd3 h5 9.Nc3 Nbd7.

3.e3 e5

4.Be5 Nc6!? 5.Bc3 Bb4=.

4.Be5 d6 5.Bb2 Bg4 6.Be2 h5 7.Nf3 Rg8 8.0–0 Be7 9.d3 b5 10.a4 ba4 11.h3 (11.c4 Bd7+–) 11...Bf5 (11...Bd7 12.Nd4+/–) 12.Nd4 Bg6 (12...Bd7 13.Bh5 g4 14.hg4+/–) 13.Ra4 Qd7 14.Ra5 Nh7? (better is 14...g4!? 15.h4 c5 16.bc5 dc5+/–) 15.Bf3 c6 16.b5 (16.b5 g4 17.hg4 (17.bc6?! Qc7 18.Bd5 Qa5+/–) 17...hg4 18.Bc6 (18.bc6 Qc7 19.Nb5 Qa5+=) 18...Nc6 19.Nc6+–) 1–0. Wall,Bill – Hamilton,Howard, North Wilkesboro, NC, 1976.

3.e3 e6

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 (7...d5 8.h3=) 8.h4+= g4 9.Bd3 (9.Bf6 Qf6 10.Qg4 h5+–) 9...h5= 10.Ne2 Be7 (10...d5 11.Nbc3=) 11.Nf4 (11.Bd4 d5 12.c4 Nbd7=) 11...d6 12.0–0 e5 13.Ne2 Nd5 (13...Nbd7 14.Ng3=) 14.e4 Nb4 15.Bc4 Bh4 (15...Qa5 16.Nbc3=) 16.Na3 Be6?? (better 16...cb5 17.Nb5 Be6 18.Be6 fe6+=) 17.Be6+– fe6 18.Qb1 Qa5? (better 18...c5 19.c3 Qa5+–) 19.Nc4 (19.Nc4 Qc7 20.Qb4+–) 1–0. GuestBRJM – GuestLMLM, freechess.org, 2020.

4.d4 Bb4!? 5.c3 Be7+=.

4.Qf3 Bg7 5.d3 0–0 (5...Nc6 6.b5 g4 7.Qd1=) 6.Nd2 d5 7.Qd1 (7.Rb1 a5 8.b5 Re8=) 7...Nc6 8.b5 e5?? (better is 8...Ne7=) 9.bc6+– Ng4 (9...d4 10.Ngf3 Nd5 11.Nc4+–) 10.Ngf3 (better is 10.cb7 Bb7 11.Qg4+–) 10...bc6 (10...d4 11.ed4 ed4 12.h4+–) 11.Be2 (11.h3!? Rb8 12.Ba3 e4 13.Bf8 Ba1 14.Qa1 Qf8 15.de4 Nh6+–) 11...f6 12.Ng5 (12.h4 Rb8 13.Rb1 gh4+–) 12...fg5? (better is 12...Nf2 13.Kf2 fg5 14.Ke1 g4+–) 13.Bg4 Bg4 14.Qg4 Qf6 15.Nf3 Qg6 16.Qg5 e4 17.Qg6 hg6 18.Bg7 Kg7 19.Ne5 ed3 20.cd3 Rf6 21.0–0 Re6 22.d4 Re5 23.de5 Re8 24.Rfc1 Re6 25.f4 g5 26.Rab1 g4 27.Rb7 Kg6 28.Rc7 Kf5 29.R7c6 Rc6 30.Rc6 Ke4 31.e6 Ke3 32.f5 d4 33.e7 d3 34.e8Q Kf4 35.Rc4 Kg5 36.Qg6 (36.Qg6 Kh4 37.Qg4) 1–0. Trkn – Harry N., itsyourturn.com, 2001.

4.h3 Bb4!? 5.Nf3 Rg8+=.

3.e3 Bg7

4.a3 d5 (4...d6 5.d4 a5 6.b5 c6 7.c4=; 4...Rg8 5.d4 a5 6.Bd3 ab4 7.ab4+=) 5.Nf3 g4 6.Ne5 Bf5 7.Be2=.

4.a4 Nc6 5.b5 Na5 6.Be2 d6 7.d4=.

4.b5 c5 5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qa5 (8...d6 9.Be2=) 9.Nc3 d5 (better 9...d6!?=) 10.Nd5+– Nbd7 11.Nf6 (11.Nf3 h6+–) 11...Bf6 12.Bf6 Nf6 13.Nf3 g4 14.Ne5 Ne4 15.Ng4 (15.Bd3 Nd2 16.Ke2 f6+–) 15...Bg4+= 16.f3 Rg8 (16...Bh5 17.g4 Bg4 18.fg4+–) 17.fg4+– Rg4 18.Bd3 Ng5?? (better 18...Nf6 19.0–0 Rg5+–) 19.Qg4+– Qa1 (19...h6 20.Rf1 Qc7 21.h4+–) 20.Qd1 (better 20.Ke2 Qa5 21.Ra1 Qd8 22.Qg5 h6+–) 20...Qf6 (20...Qa3 21.Bb1 h6 22.0–0+–) 21.Be2 (21.Qa4 Kf8+–) 21...Qb2 22.0–0 Qg7 (22...Ne4 23.Bh5 Nd6 24.Qg4 Qd2 25.Qe6+–) 23.Bf3 (better 23.Qa4!? b6+–) 23...Nh3 24.Kh1 Nf2 (24...Qg6 25.gh3 Qb6 26.Qa1+–) 25.Rf2 (25.Rf2 Qe5 26.Bb7+–) 1–0. RichardSommer (1950) – maerc420 (1895), lichess.org, 2020.

4.Bb5 Nc6 5.a3 a5 6.Nf3 g4 7.Nd4=.

4.Nc3= Rg8 (4...0–0 5.Nf3 g4 6.Ne5 d6 7.Nd3=; 4...d6 5.Ne4 Nc6 6.Nf6 Bf6 7.Bf6+=; 4...d5 5.Nf3 g4 6.Ne5 a6 7.Be2=; 4...a5 5.ba5 0–0 6.g4 d5 7.h4=) 5.Nf3 g4 6.Nd4 d5 7.Be2=.

4.c4 a5 5.b5=.

4.c4 e5 5.Nf3 (5.Be5 Nc6 6.Bc3 d5+–) 5...e4 (5...Qe7 6.a3+= (worse 6.Be5 g4–/+)) 6.Ng5 0–0? (better 6...d5!?+=) 7.Ne4!+– Ne4 8.Bg7 Kg7 (8...Nf2 9.Kf2 Kg7 10.Qg4 Kh8 11.Qf4+–) 9.Qg4 Ng5 10.h4 d5 (10...h6 11.Nc3+–) 11.Qd4 (11.Qg5 Qg5 12.hg5 dc4 13.Bc4 Be6+–) 11...Qf6 12.Qf6 (12.hg5?! Qd4 13.ed4 Nc6+–) 12...Kf6 13.hg5 Kg5 14.cd5 h5 (14...a5 15.b5+–) 15.Nc3 f5 (15...a5 16.b5+–) 16.Be2 Rh8 17.Nb5 Na6 (17...Rh7 18.Rc1 c6 19.Nd6+–) 18.Rc1 Bd7 (18...Rh7 19.a3 h4 20.Nd4+–) 19.Nc7 Nc7 (19...Rac8 20.f4 Kf6 21.Ba6 ba6 22.Kf2+–) 20.Rc7 Bc8 21.f4 Kf6 (21...Kg6+–) 22.Rh5 Rh5 23.Bh5 a5 (23...Be6 24.de6 Ke6 25.Rb7 a5+–) 24.Rf7 1–0. DEFFM – GuestWLBV, freechess.org, 2018.

4.c4 Nh5 5.Nc3 (5.Qh5?? Bb2 6.Nf3 e6–+ (6...Ba1?! 7.Ng5 Rf8 8.Nh7–+)) 5...Nf6 6.b5 c6 7.a4 d6 8.h3 Bf5 9.Nf3 Bg6 (9...Ne4!?=) 10.Ng5+– h6 11.Nf3 0–0 (11...Rg8 12.d4+–) 12.Be2 e5 13.0–0 Nh5 (13...e4 14.Nd4+–) 14.Ne5 (14.d4 Qa5+–) 14...de5+– 15.Bh5 Bd3 (15...Bh5 16.Qh5 Qd2 17.Ba3+–) 16.Be2 e4 (16...Qd7 17.Ra3+–) 17.Bd3 (17.f3 Be2 18.Qe2 Qd3+–) 17...ed3 (17...Qd3 18.f3 Rd8 19.Rf2+–) 18.Qf3 Nd7 19.bc6 bc6 20.Qc6 The passed pawn on c4 quickly leads to threats 20...Ne5 21.Qd5 Qg5?? (better 21...Qc8 22.Rfc1 Rd8+–) 22.f4 Nf3 (22...Qh5 23.fe5 Rfd8 24.Qe4 Qe5 25.Ra2+–) 23.Qf3 Qe7 (23...Qh4 24.Nd1+–) 24.Ba3 Qe6 25.Bf8 Rf8 26.Rac1 White prepares the advance f5 (26.f5 Qd6 27.f6 Qf6 28.Qf6 Bf6 29.Rf6 Kg7+–) 26...Rc8 (26...Qc4 27.f5 Re8 28.Qb7+–) 27.Nd5 Kf8 (27...Kh8 28.f5 Qd7 29.f6+–) 28.f5 Qe7 (28...Qe5 29.f6 Bh8 30.Qf4 Qf4 31.Rf4+–) 29.f6 (better 29.Ne7 Rd8 30.f6+–) 29...Qe6 30.fg7 Kg8 31.Qg4 (31.Qg3 f5 32.Rf5 Qf5 33.Ne7 Kf7 34.Nf5 Rd8 35.Qc7 Ke6 36.Rf1 Kf6 37.Qd8 Kg6 38.g8Q Kh5 39.Qh4) 31...Qg6 32.Qg6 (32.Ne7 Kh7 33.Ng6 f5 34.Qf5 Re8 35.Nf8 Kg7 36.Qh7) 32...fg6+– 33.Ne7 (33.Rb1 Rc6 34.Rb7 Kh7 35.Rf8 Rc4 36.g8Q) 33...Kg7 34.Nc8 h5 35.Na7 Kh6 (35...h4 36.c5 Kh7 37.c6 Kg7 38.c7 Kg8 39.c8Q Kh7 40.Rf7 Kh6 41.Qh8 Kg5 42.Rc5) 36.c5 g5 (36...Kg7 37.c6 Kh8 38.c7 Kg8 39.c8Q Kh7 40.Rc7 Kh6 41.Qf8 Kg5 42.Qf4) 37.c6 (37.Rf6 Kg7 38.Rcf1 Kh7 39.Rf7 Kg8 40.c6 h4 41.c7 g4 42.c8Q) 37...h4 (37...Kg6 38.c7 Kh7 39.c8Q h4 40.Rf7 Kg6 41.Qe6 Kh5 42.Rh7) 38.c7 Kh5 (38...Kg7 39.c8Q Kh7 40.Rf7 Kg6 41.Qe6 Kh5 42.Rh7) 39.Rc5 (39.Rc6 g4 40.Rf5) 39...Kg6 (39...Kh6 40.c8Q Kh7 41.Qd7 Kh6 42.Rf6 Kh5 43.Qe8) 40.Rff5 (40.c8Q Kg7 41.Qf8 Kh7 42.Qf7 Kh6 43.Rf6) 40...Kh5 (40...Kh6 41.c8Q Kh7 42.Qd7 Kh6 43.Rf6 Kh5 44.Qe8) 41.Rg5 Kh6 42.Rg4 Kh7 43.Rh5 1–0. RichardSommer (1970) – VershSud (1925), lichess.org, 2020.

4.c4 h6 5.Nc3 b6 6.b5 (6.Qf3 c6+=) 6...Bb7 (6...a6 7.d4=) 7.Nf3 a6 8.a4 c6 (8...Ra7 9.d4+=) 9.Be2 ab5 10.ab5 Ra1 11.Ba1 c5 12.0–0 0–0 13.d4 d6 14.dc5 dc5 15.Qa4 Nbd7 16.Rd1 Qc7 17.Bb2 Ne4 (17...g4 18.Nd2+=) 18.Qc2 (18.Nd5 Bd5 19.Bg7 Kg7 20.cd5 Ndf6+=) 18...Nc3 19.Bc3 Bc3 20.Qc3 f6? (20...Bf3 21.Bf3 (worse 21.gf3 Rd8=) 21...Ne5 22.Be2+=) 21.Ra1?? (better 21.Qd3 Rd8 22.Qg6 Kh8 23.Qh6 Kg8 24.Qg6 Kh8 25.h3+–) 21...Kg7 22.Nd2 Ra8 23.Bf3 (23.Ra8 Ba8 24.Nf1 Ne5+–) 23...Ra1 (23...Qe5 24.Qe5 Ne5 25.Ra8 Nf3 26.Nf3 Ba8 27.Nd2=) 24.Qa1 Bc8 (24...Bf3 25.Nf3 Qd6 26.h3+=) 25.Qa8 Ne5 26.Bd5 e6 27.Bf3 Qd7 28.Ne4 (28.Nf1 Nc4 29.Ng3 Nd6=) 28...Nf3 (28...g4 29.Be2 Bb7 30.Nf6 Ba8 31.Nd7 Nd7 32.Bg4 Ne5 33.Be6 Kf6–+) 29.gf3= Bb7 (29...f5 30.Nc3=) 30.Qa7 (30.Qg8! Kg8 31.Nf6 Kf8 32.Nd7 Ke7 33.Nb6 Bf3 34.Na4+–) 30...f5 31.Nc5?? (better 31.Nd6! Qd6 32.Qb7 Kg6 33.Qc6 Qd1 34.Kg2+=) 31...bc5 (31...Qd1 32.Kg2 Qf3 33.Kg1 Qg2) 32.Qc5 (32.e4–+) 32...Kg6 (32...Qd1 33.Kg2 Qf3 34.Kf1 Qd1) 33.e4?? (better 33.Qd4 Qd4 34.ed4 Bf3 35.Kf1–+) 33...fe4 (33...Qd1 34.Kg2 fe4 35.Qa7 ef3 36.Kg3 Qg1 37.Kh3 Qg2) 34.fe4 (34.h3–+) 34...Be4 (34...Qd1 35.Kg2 Be4 36.f3 Qf3 37.Kg1 Qg2) 35.Qe3 (35.f3 Qd1 36.Kf2 Qf3 37.Ke1 Qc3 38.Ke2 Bd3 39.Kf3–+) 35…Qd1 (35...Qd1 36.Qe1 Qe1) 0–1. RichardSommer (2070) – izdebny (2090), lichess.org, 2020.

4.c4 h6 5.Nf3 d6 6.Be2 Nc6 7.b5 Na5 8.0–0 Be6 (8...Bg4 9.Bf6 Bf6 10.d4+=) 9.Qc2 a6 10.d3 ab5 11.cb5 0–0 12.a4 (12.Bf6 Bf6 13.d4 Nb3–/+) 12...c6 (12...Bb3 13.Qd2=) 13.Nc3 cb5 14.ab5+= Rc8 15.Qd2?? b6?? 16.Na4?? Nb3–/+ 17.Qb4 Na1 18.Ba1 Nd5 19.Qa3 Ba1 20.Qa1 Nf6 21.Nd4 Bd5 22.Nc3 Bb7 23.Bf3 Bf3 24.Nf3 e5 25.d4 Qc7 26.Na4 ed4 27.Nd4 Ne4 28.Nc6 d5= 29.Nc3 Nd2?? 30.Rc1?? Nb3 31.Qb2 Nc1 32.Qc1 f5?? 33.g3?? f4?? 34.Nd5=+ Qf7 35.Qc4?? fg3–/+ 36.Nde7 Kg7–+ 37.Qd4 –+. TIROLOCO – DOORMAN, Live Game Caissa's Web, 2004.

4.Bd3 h6 5.g4 d6 6.f3 h5 7.c4 hg4 8.f4 gf4 9.e4 Nc6 10.b5 Ne5 11.Be2 f3 12.Bf1 Ne4 13.d4 f2 14.Ke2 Rh2 15.Nh3 Ng3 16.Kd2 Rh1 17.de5 gh3 18.Qf3 Rf1 19.Nc3 de5 20.Kc2 Bf5 21.Kb3 Qd2 22.Rf1 Bc2 23.Kb4 a5 24.Ka3 Qd6 0–1. Tricky.1 – jelgava, ChessWorld.net, 2005.

4.d4 0–0 5.c4 d6 6.h3 c5 7.bc5=.

4.d4 0–0 5.d5 d6 6.Bd3 c6 7.dc6 Nc6 8.b5 Ne5 9.Nf3 Nd3 10.cd3 Qa5=+ 11.Nc3 Nd5 12.0–0?? Nc3–+ 13.Qd2 b6 14.d4? Nb5 15.Qc1 h6 16.Rb1?? Be6 17.a3 Nc7 18.Qc7–/+ Rfe8 19.Rfd1 Qa6 20.Bc1?? Rac8–+ 21.Qc8 Rc8 22.e4 Bg4 23.h3 Bf3 24.gf3 Rc2 25.Rb2 Qe2 26.Rd2 Rd2 27.Bd2 Bd4 28.Be3 Qb2 29.Bd4 Qd4 30.Kg2 h5 31.a4 h4 32.a5 Qd1 33.ab6 ab6 34.Kh2 b5 35.e5 de5 36.f4 ef4 37.f3 Qf3 38.Kg1 b4 39.Kh2 b3 40.Kg1 b2 (41.Kh2 Qe2 42.Kg1 b1Q) 0–1. Tricky.1 – Arran, ChessWorld.net, 2005.

4.d4 a5 5.b5 d6 6.Bd3 Nbd7 7.Nf3+=.

4.d4 d5 5.c4 Bg4 6.Nf3 Nc6 7.b5+=.

4.d4 d5 5.Nf3 g4 6.Ne5 Bf5=.

4.d4 d6 5.c4 0–0 6.h3 a5 7.b5=.

4.d4 g4 5.Be2 d5 6.Nd2 0–0 7.c4 c6 8.Qc2 Be6 9.a3 Nbd7 10.cd5 Nd5 11.Bd3 f5 12.e4 (better is 12.Ne2!?+=) 12...fe4 13.Ne4 N7f6 (13...Nf4 14.Ng5 Nd3 15.Qd3=) 14.0–0–0 (better is 14.Ng5 Nf4 15.Bh7 Kh8 16.Ne6 Ne6 17.Bf5 Nd4 18.Bd4 Qd4 19.Rd1 Qe5 20.Ne2+=) 14...Ne4–/+ 15.Be4 Nf6 16.Bf5 Bf5 17.Qf5 Qd5 18.Qd5 Nd5 19.Ne2? (19.f3!?–/+) 19...a5 (19...Rf2 20.Kd2–+) 20.ba5 Ra5 (better is 20...Rf2 21.Kd2 Nf4–+) 21.Rhf1–/+ Nb6 22.Nc3 (22.Rd3 Nc4 23.Kc2 e5–/+) 22...Nc4 23.a4 Nb2 24.Kb2 b5 25.ab5= cb5 26.f3 b4+= 27.Ne4 Rfa8 28.Kb3= Rb8 29.fg4 Ra3 30.Kb2 Re3 31.Nc5 b3 32.Rf3 Rf3?? 33.gf3+– Rd8 34.Nb3 Rb8? 35.Kc3 e5 36.d5 e4 37.Kc4 ef3 38.d6 1–0. mihai740609 – 62viorel, playok.com, 2012.

4.d4 h6 5.Bd3 d5 6.Ne2 a5 7.b5+=.

4.Be2 a6 5.Nf3 Rg8 6.0–0 g4 7.Ne1=.

4.Be2 d5 5.Nf3 Nc6 6.b5 g4 7.bc6=.

4.Be2 d6 5.d4 0–0 6.Nf3 g4 7.Nfd2=.

4.Be2 e6 5.a3 Nc6 6.d3 d5 7.Nf3 h6 8.Nbd2 Ne7 9.c4 Bd7 10.cd5 Ned5 11.0–0 Qe7 12.Ne5 0–0–0 13.Nec4 Ne8 14.Bg7 Ng7 15.a4 Nc3 16.Qe1 Qb4 17.Bf3 Nf5 18.Ne4 Bc6 19.Nc3 Bf3 20.gf3 Rd3 21.Ne5 Rc3 22.Rb1 Qc5 23.Rb5 Qa3 24.Qb1 b6 25.a5 Nd6 26.Rb6 ab6 27.ab6 Rb3 28.b7 Rb7 29.Qd1 Rd8 30.Qc2 Qb4 31.Rc1 f6 32.Ng6 Qb6 33.Ne7 Kb8 34.Nc6 Kc8 35.Nd8 Kd8 36.Qh7 c5 37.Qh8 Ne8 38.Rd1 Rd7 39.Ra1 Qb7 40.Qh6 Qf3 41.Qh8 Rd1 42.Rd1 Qd1 43.Kg2 Qd5 44.Kf1 c4 45.Qh7 c3 46.Qa7 c2 47.Qb8 Ke7 48.Qb7 Qd7 49.Qb4 Kf7 50.Qc3 Qd1 51.Kg2 c1Q 52.Qc1 Qc1 53.h3 Qc6 54.Kf1 Qf3 55.Ke1 e5 56.Kf1 Nd6 57.Kg1 Ne4 58.Kf1 Qf2 0–1. romiche (1695) – martillaco (1630), lichess.org, 2018.

4.Be2 Rg8 5.Nc3 d6 6.a3 e5 7.e4=.

4.Be2 h5 5.Nf3 g4 6.Ng5 Nc6 (6...Rg8 7.a3=) 7.b5+= Na5 8.0–0 (8.Ne4 e6+=) 8...d5= 9.f3 (9.Bc3 c5=) 9...Bh6 (9...Rg8 10.f4=) 10.f4+= Rg8 11.d3 (11.Bc3 c5=) 11...c6 12.a4 Bg5 13.fg5 Rg5 14.Qd2 Rg6 15.Bc3 b6 16.Ba5 ba5 17.bc6 Qb6 18.Nc3 Qc6 19.d4 Bd7 20.Bd3 Rg7 21.Ne2 h4 Black prepares g3 22.Nf4 g3 23.h3 Rc8 24.Qa5 Qc7 25.Qb4 a5 26.Qb3 (26.Qd2 Rg5+=) 26...Rg5 27.Rab1 (27.Ra3 Qd6=) 27...Qc6 28.Bb5 (28.Qb8 Rb8 29.Rb8 Qc8 30.Rc8 Bc8=) 28...Qc2=+ 29.Bd7 Nd7 30.Qc2 Rc2 31.Rb5 Rf5 (31...e6 32.Ra5 Nb6 33.Ra7=) 32.Ra5 (32.e4 Rf6 33.Ra5 Nb6 34.Nd5 Nd5 35.ed5 Rf1 36.Kf1 Rf2 37.Kg1 Rf4–/+) 32...Nb6 33.e4 Rf6 34.e5 (34.ed5? Rf2 35.Rf2 gf2 36.Kf2 Rf4 37.Ke3 Rf5–+) 34...Rf5 35.Nd5 Rf1 36.Kf1 Rf2 37.Kg1 Nc4 (37...Nd5 38.Rd5 Ra2 39.Kf1=+) 38.Ra8 Kd7 39.a5 Ke6 40.Nc7 Kf5 41.Re8 (41.Rf8 Ke4 42.Ne6–+) 41...Ne3 (41...Ne3 42.Re7 Rf1) 0–1. DEFFM – GuestBMST, freechess.org, 2017.

4.Be2 Nh5 5.Bh5?? (better 5.Bg7 Ng7 6.d4+=) 5...Bb2–+ 6.Qf3?? (better 6.Na3–+) 6...0–0 (6...Rf8 7.Qe4 Ba1 8.Qh7–+) 7.Qg4 (7.h4 Ba1 8.hg5 e6–+) 7...f6 8.Qc4 (8.h4 d5 9.Qg3 Ba1 10.hg5 Qd6 11.Qd6 cd6 12.gf6 Rf6–+) 8...d5 9.Qb3 Ba1 10.c3 Nc6 (better 10...g4!? 11.a4 Qd6 12.h3–+) 11.Na3 (11.a3 a5 12.b5 Ne5–+) 11...Ne5 12.Ne2 (12.Nf3 g4 13.Ne5 fe5 14.Ke2–+) 12...Nd3 13.Kd1 (13.Kf1 Bb2–+) 13...Be6 (better 13...Nf2 14.Ke1 Nh1 15.Nc2–+) 14.Nd4 Bf7 (14...Nf2 15.Ke2 Nh1 16.Ne6–+) 15.Kc2 (15.Bf7 Rf7 16.Ke2 c5 17.Ra1 c4 18.Nc4 dc4 19.Qc4 Ne5–+) 15...Nf2 (better 15...Bh5 16.Kd3 e5 17.Nf5–+) 16.Bf7 Rf7 17.Ra1 Qd7 18.Rf1 Ne4 (18...Ng4 19.h3 Nh6 20.Kb1–+) 19.h4? (better 19.Nf5 Kh8 20.d3–+) 19...f5 (better 19...Ng3!? 20.Rf3 gh4 21.Kd1–+) 20.hg5 f4 (better 20...Ng5!? 21.Nf3 Rg7–+) 21.ef4–/+ e5 (21...Raf8 22.f5 Ng3–/+) 22.Ne2 (22.Nf3 Ng3 (22...Rf4?! 23.Ne5 Qe6 24.Rf4 Qe5 25.Rf3=+) 23.Re1 Rf4 24.Re5 c6–/+) 22...Qf5 (better 22...Ng5 23.g3 Qg4–+) 23.d3–/+ ef4 (23...Qg4 24.Re1 Ng3 25.Qd5 Ne2 26.Nc4=+) 24.Rf4=+ (worse 24.de4 Qe4 25.Kd1 Qg2–/+) 24...Qg5 25.Rf7?? (better 25.de4 Rf4 26.Nf4 Qf4 27.Qd5 Qf7 28.Nb5 Qd5 29.ed5=+) 25...Qd2–+ 26.Kb1 Qe2 (26...Qd3!? 27.Qc2 Qc2 28.Nc2 Kf7 29.Ne3–+) 27.de4? (better 27.Ka1 c6 28.Rb7 Qd3 29.Nb1=+) 27...Qe4–+ (27...Kf7?! 28.Qd5 (worse 28.ed5 Rd8–/+) 28...Kf6 29.Qb7=) 28.Nc2 Kf7 29.Kb2 (29.Qa4 Ke6–+) 29...c6 (29...Rg8 30.g4 Rg4 31.Nd4 Rg2 32.Ka3–+) 30.Nd4 (30.b5 Re8 (worse 30...Qg2 31.bc6 b6 32.c4–+) 31.bc6 bc6 32.Qb7 Re7 33.Qc6 Qg2–+) 30...Qg2 31.Ka3 h5 (better 31...Qd2 32.b5 Ke8–+) 32.Qc2 (32.Qd1 Qg6 33.Kb2–+) 32...Qc2 33.Nc2 h4 34.Ne3 Kg6 35.Ng4 (35.Ng2 Rh8 36.b5 h3 37.Nf4 Kg5 38.Nh3 Rh3–+) 35...Kg5 36.Nh2 Kf4 (better 36...Rf8 37.Kb3–+) 37.Kb3 (37.b5 Re8 38.Kb4 cb5 39.Kb5 Re2–+) 37…Kg3 (37...Kg3 38.Nf1 Kf2–+) 0–1. aravind555 (1760) – heiderpreciado (1785), lichess.org, 2020.

4.Be2 h6 5.c4 d6 6.Nf3 Nc6 7.b5 Na5 8.a4 (8.Bc3 c6+=) 8...Bd7 (8...Bg4 9.Bf6 Bf6 10.d4=) 9.Kf1 (9.0–0 Bg4+=) 9...e6 (9...Bg4 10.Bf6 Bf6 11.d4=+) 10.g3 (10.Bc3 c5=) 10...c6 11.Nd4 cb5 12.ab5= a6 13.Nc3 ab5 14.Ncb5= Bb5 15.Nb5 0–0 16.Qc2 b6 17.d3 Rc8 18.Kg2+/– d5 19.Be5 dc4 20.dc4 Nd7 21.Rhd1?? Be5–+ 22.Ra5? ba5 23.f4 Bf6 24.Nd6 Rc7 25.Bh5 Qe7 26.Ne4 Bg7 27.Qa4 Nc5 28.Nc5 Rc5 29.Rd7 Qf6 30.e4 gf4 31.e5 Qe5 32.Bf7 Kh8 33.Be6 fg3 34.hg3 Qe2 35.Kh3 –+. TIROLOCO – DOORMAN, Live Game Caissa's Web, 2004.

4.Nf3 Nc6 5.b5+= Na5 6.Ng5 d6 (6...d5 7.Bc3 c5 8.Bd3+=) 7.Be2 h6 8.Nf3 Bf5 9.0–0 Qd7 (9...Rg8!?+/–) 10.Bc3+– b6 11.Ba5 0–0–0?? (better is 11...ba5 12.Nd4 a6+–) 12.Bc3 e5 (12...Rhg8 13.a4+–) 13.a4 h5 14.Bc4 (14.a5 Rdg8+–) 14...Ne4 (14...e4 15.Nd4+–) 15.Bb2 (15.a5 d5 16.ab6 cb6+–) 15...Rdf8 (15...Bg4 16.h3 Bh3 17.gh3 Qh3 18.Nh2+– (18.Bf7?! Rdg8 19.Be6 Qe6+/–)) 16.d3 f6 (16...Nc5+–) 17.de4 Be4 18.Bd3 (18.a5 d5 19.Bb3 h4+–) 18...f5 (18...Bb7 19.Nbd2 f5 20.Bc4+–) 19.Be4 fe4 20.Ng5 h4 21.Qd5 Bf6 22.Qa8 1–0. bridlingtonbrummie – pieeater, ChessWorld.net, 2010.

4.Nf3 Nc6 5.Ng5 Nb4 6.a3 Nc6 7.Bc4 e6 8.0–0 b6 9.Ne4 Bb7 10.Nf6 Bf6 11.Bf6 Qf6 12.c3 0–0–0 13.Be2 h5 14.Bf3 h4 15.g3 hg3 16.fg3 Qh6 17.Qe2 f5 18.Qg2 Rdg8 19.d4 Na5 20.Ra2 Bf3 21.Qf3 Kb8 22.Rg2 Nb7 23.Nd2 Nd6 24.Rff2 Rg4 25.d5 Ne4 26.Ne4 Re4 27.de6 de6 28.Re2 Rd8 29.Qf1 Re3 30.Qe1 Re2 31.Re2 Rd6 32.Re5 a5 33.c4 Qf6 34.c5 bc5 35.Rc5 a4 36.Re5 Kc8 37.Qe2 Kd8 38.Kg2 Qe7 39.Qb5 Rd2 40.Re2 Re2 41.Qe2 Kd7 42.Qb5 c6 43.Qa4 Qc5 44.Qb4 Qd5 45.Kh3 e5 46.Qb7 Kd6 47.Qb8 Kd7 48.Qb7 Ke6 49.Qc8 Kf6 50.Qf8 Ke6 51.Qg8 Kf6 52.Qh8 Ke6 53.Qh6 Kf7 54.Qh7 Kf6 55.Qh6 Kf7 56.Qh5 Kf6 57.Qh4 Kf7 58.Qh5 Kf6 59.Qh6 Kf7 ½–½. Chess4Win (1740) – DanniDK (1745), lichess.org, 2020.

4.Nf3 Nc6 5.Ng5 h6 6.Nf3 d6 7.b5 Ne5 8.Ne5 de5 9.Be5 Qd5 10.Bb2 Bf5 11.c4 Qc5 12.d4 Qb4 13.Bc3 Qd6 14.Bd3 Ne4 15.0–0 Nc3 16.Nc3 Bd3 17.Qd3 Rg8 18.Ne4 Qg6 19.g3 Bf6 20.Nc5 Qh5 21.Qe4 Bh4 22.Nd3 f5 23.Nf4 Qf7 24.Qg2 Bg5 25.d5 Bf4 26.ef4 h5 27.Rfe1 h4 28.Re6 hg3 29.fg3 Rg6 30.Rae1 0–0–0 31.Re7 Qf6 32.Qe2 Rgg8 33.Qe6 Qe6 34.R1e6 c6 35.bc6 bc6 36.Rc6 Kb8 37.Rcc7 Rge8 38.Rb7 Ka8 39.Ra7 Kb8 40.Reb7 Kc8 41.Re7 Kb8 42.Rad7 Rd7 43.Re8 Kc7 44.Rf8 Kd6 45.Rf5 Kc5 46.h4 Kc4 47.h5 Kd4 48.Re5 Ra7 49.h6 Rh7 50.Rh5 Ke4 51.Kg2 Kd4 52.a4 Kc5 53.a5 Kb5 54.d6 Kc6 55.a6 Kb6 56.a7 Ka7 57.d7 Rd7 58.h7 Rh7 59.Rh7 Kb6 60.f5 Kc6 61.g4 Kd6 62.Kg3 Ke5 63.Kh4 Kf6 64.g5 Kf5 65.Kh5 Ke5 66.g6 Kf6 67.g7 Kf7 68.Kh6 Kg8 69.Rh8 Kf7 ½–½. Chess4Win (1705) – dishwasher_2 (1725), lichess.org, 2020.

4.Nf3 d6 5.Ng5+= e5 6.c4 Bg4 7.Be2 Be2 8.Qe2 Nc6 9.a3 Ne7 10.0–0 Ng6 11.Nc3 c6 12.d4 Nd7 (12...Rg8 13.Rad1 Qe7 14.Nce4 Ne4 15.Ne4 ed4 16.Ng3+/–) 13.Nge4 Ndf8? (13...Qe7!?+–) 14.Rad1 (better is 14.de5 Be5 15.f4 Bc3 16.Bc3+– (16.Nc3?! Qe7+–)) 14...Qh4?? (14...f5 15.de5 fe4 16.Ne4 Kf7+–) 15.Nd6 Ke7 (15...Kd7 16.de5 Kc7 17.Ncb5 Kb8 18.Nf5+–) 16.Nb7 (better is 16.Nf5 Ke8 17.de5 Be5 18.Nh4 Nh4 19.Ne4+–) 16...Ne6 17.Na4 e4 18.d5 Bb2 19.Qb2 Ng5 20.dc6 Nf3 21.gf3 ef3 22.Rd7 Kf8 23.Qe5 Ne5 24.Rd4 Qg5 (24...Qg5 25.Rg4 Qg4 26.Kh1 Qg2) 0–1. brozal – ap47, playok.com, 2012.

4.Nf3 g4 5.Nd4 d5 6.Bd3 Bf8 7.Nb3=.

4.Nf3 g4 5.Nd4 d6 6.Nc3=.

4.Nf3 g4 5.Nd4 h5 6.Be2 (6.Nf5!? Kf8 7.c4+=) 6...d6= 7.0–0 (7.Nc3 Nc6 8.Nc6 bc6+=) 7...Bd7 (7...h4 8.Nc3=+) 8.f3= e5 9.Nb3 Nc6 (9...a6!?=) 10.b5+= Nb4 11.a3 Nbd5 12.c4 Nb6 13.a4 (13.Na5 Qe7+=) 13...a5 (13...gf3 14.Rf3 Bg4 15.c5=) 14.c5+= dc5 (14...Nbd5!?+=) 15.Nc5+– h4? (better 15...Qe7 16.Nb7 Nfd5+–) 16.fg4+– Bg4 (16...h3 17.gh3 Rh3 18.Nb7 Qc8+–) 17.Bg4 Qd5 (17...Nc4 18.Ba3 e4 19.Bh3 (worse 19.Nb7 Qd5 20.Na5 Ra5+–) 19...Na3 20.Ra3+–) 18.Rf5 0–0–0 (18...Ng4 19.Qg4 Qc5 20.Qg7 0–0–0 21.Qe5 Qe5 22.Be5 Rh7+–) 19.Re5 (19.Re5 Kb8 20.Rd5 Rd5 21.Qc2 Ng4 22.Bg7+–) 1–0. GuestRBPC – GuestWMCJ, freechess.org, 2019.

4.Nf3 g4 5.Ne5 d6 6.Nc4 Be6 (6...Bf5 7.Nc3=) 7.Be2 Nbd7 (7...a6 8.Bf6 Bf6 9.d4=) 8.d4 (8.0–0 Bf5=) 8...Bd5 (8...c6 9.0–0=) 9.0–0+= h5 (9...c5 10.bc5 dc5 11.Nc3 Bc4 12.Bc4 cd4 13.ed4+=) 10.Nc3 Bc4 11.Bc4 Nb6 12.Bb5 c6 13.Ba4 (13.Bd3 d5+=) 13...a5 (13...Nfd5 14.Bb3 Nb4 15.Ne4=) 14.b5 (14.a3!?=) 14...Na4+= 15.Na4 cb5 16.Nc3 b4 17.Ne2 (17.Nb5 h4–/+) 17...Rc8 (17...h4 18.c4–/+) 18.c4 (18.c3 bc3 19.Nc3 h4–/+) 18...Rc4–/+ 19.Qa4 Nd7 20.Qb5 Rc2 21.Rab1 0–0 22.Nf4= Nf6 23.Qb7 Qc7 24.Qa6 Rc8 25.Qd3? e5 26.de5–/+ de5 27.Nd5 Nd5 28.Qd5 Rd8 29.Qe4 Rdd2 30.Ba1? Ra2 31.Rfc1 Rac2 32.Rc2 Qc2 33.Qa8 Kh7 (33...Kh7 34.Rf1 Qd3–+) 0–1. gtate (1820) – supertimchan (1745), net–chess.com, 2002.

4.Nf3 g4 5.Nd4 d6 6.Be2 h5 7.f3 gf3 8.Bf3 Rg8 9.Bh5 Nh5 10.Qh5 Nd7 11.g3 Nf6 12.Qe2 Bd7 13.b5 e5 14.Nf3 Qe7 15.c4 0–0–0 16.Nc3 Bg4 17.h3 Be6 18.e4 Nd7 19.Nd5 Bd5 20.ed5 Nc5 21.d3 Qf6 22.Rf1 Qg6 23.d4 Nd3 24.Kd1 Nb2 25.Qb2 Qg3 26.de5 Qh3 27.Qe2 de5 28.Ne5 Be5 29.Rc1 Rge8 30.Rc2 Bf4 0–1. axtur777 – Saarwarrior, lichess.org, 2020.

4.Nf3 h6 5.Be2 d6 6.Nc3 a6 7.d4 Nbd7 8.0–0+= 0–0 9.a3 c5 10.Rb1 Qc7 11.bc5 dc5 12.a4 g4 13.Nd2 cd4 14.ed4 Rd8 15.Bg4 Ng4 16.Qg4 Nf6 17.Qh4 Bf5 18.Nd1 Qc2 19.Ne3 Qd3 20.Rbd1 Nd5 21.Nd5+= Rd5 22.Qe7 (22...b5 23.a5+=). marekt – jelgava, ChessWorld.net, 2005.

4.Nf3 h6 5.h3 d5 6.c4 dc4 7.Bc4 Bf5 8.d4 Bg6 (8...Nbd7 9.Qb3 e6 10.Nc3=) 9.Bd3 (9.Ne5!? Qd6 10.Ng6 fg6 11.Qc2+/–) 9...Bd3= 10.Qd3 Nc6 11.a3 a6 12.Nc3 Na7 13.0–0 Nb5? (better is 13...Nc6+=) 14.Nb5+– ab5 15.Qb5 Kf8 (15...Nd7 16.Qb7 c5 17.Qe4+– (17.bc5?! Rb8 18.Qc6 Rb2+/–)) 16.Qb7 Ne4 (16...Qc8 17.Qc8 Rc8+–) 17.Qe4 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.Nf3 h6 5.h3 d6 6.Be2 Nbd7 7.a3 a5 8.b5 c5 9.a4 b6 10.Nc3 Bb7 11.0–0 Qc7 12.Nh2 h5 13.Bf3 d5 14.Nd5 Bd5 15.Bd5 Rd8 16.Bc6 0–0 17.f4 g4 18.hg4 hg4 19.Ng4 e5 20.Bd7 Nd7 21.f5 f6 22.e4 Kf7 23.d3 Rh8 24.Kf2 Bf8 25.Rh1 Kg8 26.Rh8 Kh8 27.Qh1 Kg8 28.Qh5 Bg7 29.Qg6 Nf8 30.Nf6 Kh8 31.Qh5 Bh6 32.Qh6 Qh7 33.Nh7 Nh7 34.Be5 Kg8 35.Qg7 1–0. Abdullaevich (1655) – villaoibos (1910), lichess.org, 2018.

4.h3 a6 5.Nf3 h6 6.Bc4 d5 7.Bb3 Nc6 8.a3 0–0 9.Nh2 Bh3 10.gh3 Qd7 11.Nf3 d4 12.Nd4 Ne4 13.c3 Ne5 14.Bc2 Nd6 15.Qh5 Ndc4 16.Ra2 Qd5 17.e4 Qd7 18.d3 Nd6 19.Nd2 Ng6 20.Bb3 Nf4 21.Qf3 Nb5 22.Nb5 Nd3 23.Kf1 ab5 24.Nb1 Nb2 25.Rb2 e6 26.h4 f5 27.hg5 fe4 28.Qe4 Rae8 29.gh6 Bf6 30.Re2 Kh8 31.h7 c5 32.bc5 1–0. Abdullaevich (1855) – larrybaby (1740), lichess.org, 2017.

3.e3 Rg8

4.d4 g4 5.Be2 h5 6.h3 g3 7.fg3 Rg3 8.Nd2 Re3 9.Ngf3 Ne4 (9...d5+=) 10.Nc4?? (10.Ne4!? Re4 11.0–0+/–) 10...Ng3 (better is 10...Re2!? 11.Ke2 Ng3 12.Kf2 Nh1 13.Qh1 d5–/+) 11.Ne3= Nh1 12.Nf1 (12.d5 e5 13.de6 fe6= (13...de6? 14.Qd8 Kd8 15.0–0–0 Nd7 16.Rh1+–)) 12...e6 13.a3 h4 14.Kd2 Nc6 15.c3 Bh6 16.Kc2 Nf2 17.Qe1= Ne4 18.N1d2 d5 19.Ne4= de4 20.Nd2 Qf6 21.Rd1 e5 22.Ne4+= Qf5? 23.Bd3 Qg6 24.d5 Ne7+= 25.Nc5 Qg2–/+ 26.Rd2?? Qh3 27.Qe5= Bd2 28.Kd2?? Qg2–+ 29.Be2? Qd5 30.Qd5 Nd5 31.Bf3 Be6 32.Nb7 h3 33.Nc5 0–0–0 34.Ke2 h2 35.Kf2 Nf4 36.Ne4 Bf5 37.Bc1 Nd3 38.Kg3 Be4 39.Be4 Nc1 40.Kh2 Rd2 41.Kg3 Ra2 42.Kf3 Ra3 43.Ke3 Rc3 (43...Rc3 44.Kd2 Na2–+) 0–1. mihai740609 – charlin, playok.com, 2012.

4.Nf3 d6 5.c4 e5 6.h3 e4 7.Nh2 Nc6 8.a3 h5 9.Be2 Rh8 10.0–0 Bg7 11.f3 Ne5 12.f4 gf4 13.Rf4 Bh6 14.Rf1 Rg8 0–1. Abdullaevich – UncleS, lichess.org, 2018.

4.h4 gh4 5.Rh4 h6 6.Nf3 e6 7.Rh1 d5 8.a3 Nc6 9.b5 Na5 10.d3 b6 11.Bc3 Nb7 12.Ne5 Nd7 13.Nc6 Qg5 14.f4 Qg4 15.Qd2 Nbc5 16.a4 Bb7 17.Ne5 Ne5 18.Be5 Qg3 19.Qf2 Qf2 20.Kf2 0–0–0 21.Nc3 Rg6 22.Be2 Nd7 23.Bd4 Bc5 24.Bh5 Bd4 25.ed4 Rg7 26.a5 Rdg8 27.g4 Nf6 28.a6 Ba8 29.g5 hg5 30.fg5 Rg5 31.Bf7 Rg2 32.Kf1 Rc2 33.Be6 Kd8 34.Bg8 Ng8 35.Ne2 Ke7 36.Rh7 Kf8 37.Rc7 Rd2 38.Rc8 Kg7 39.Ra8 Rd3 40.Kf2 Rb3 41.Rg1 Kf6 42.Rf8 Ke7 43.Rgg8 Rb5 44.Re8 Kf7 45.Rgf8 Kg7 46.Nf4 Ra5 47.Ne6 Kh7 48.Re7 Kg6 49.Nf4 Kh6 50.Rf6 Kg5 51.Rg6 Kf5 52.Rf7 Ke4 53.Re6 Kd4 54.Ra7 b5 55.Rb7 Kc4 56.a7 b4 57.Rc6 Kb3 58.Rc8 d4 59.a8Q Ra8 60.Ra8 Kc3 61.Rab8 d3 62.Rb4 d2 63.Rb3 Kc2 64.Rb2 Kc1 65.Rb1 Kc2 66.R8b2 Kc3 67.Ne2 Kd3 68.Rb3 Kc2 69.R1b2 Kd1 70.Nc3 Kc1 71.Rb1 Kc2 72.Ne2 d1Q 73.R1b2 1–0. Adamkosh (1870) – Vadim86 (1860), lichess.org, 2019.

3.e3 h5

4.c4 Bg7 5.Be2 g4 6.h3 Rg8 (6...d5!?=) 7.hg4+/– hg4 8.Bg4 Nc6 9.b5 Nb4? (better is 9...Nb8+/–) 10.Be2+– d5 11.a3 dc4 12.ab4 Bd7 (12...Qd5 13.Qc2 Qg2 14.Bf3+–) 13.Bc4 e6 (13...Bg4 14.Qa4 Qd7 15.d4+–) 14.Nf3 Qe7 15.Qa4 b6 (15...Bf8 16.Bd4+–) 16.Nd4 Rc8 17.Nc6 Qd6 18.Be5 Qf8 19.Qa7 Bc6 20.bc6 Qb4 21.Qb7 Ke7 22.Be2 Ne4 23.Bg7 Rg7 24.0–0 Rcg8?? 25.Bf3 Nd2 26.Qc7 Kf6 27.Nd2 Qd2 28.Qf4 Kg6 29.Rad1 Qa5 30.Be4 f5 31.Bf3 e5 32.Qg3 Kf6 33.Qh4 Rg5 34.Rd6 Ke7 35.Rd7 Ke6 36.Rfd1 e4 37.R1d6 Ke5 38.Qh2 Rg3+– 39.Qg3 Rg3 (39...Rg3 40.c7 Rg8+–). alfons78 – spaski2, kurnik, 2011.

4.Be2 g4 5.h3 d6? (better is 5...gh3!? 6.Nh3 Bg7+=) 6.hg4+– Bg4? (6...Rg8 7.gh5 Rg2 8.Bf3+–) 7.Bf6 (better is 7.Bg4 Bg7 8.Bf3+–) 7...Be2 8.Qe2 (worse is 8.Ke2 ef6 9.Ke1 d5+=) 8...ef6 9.Rh5 Rh5 10.Qh5 Qe7 11.Nf3 Nc6 12.a3 0–0–0 13.d4 Qe4 14.Kd2 f5 15.Nc3 Qg4 16.Qg4 (16.Qf7!? Bg7+–) 16...fg4+/– 17.Ng5 f5 (better is 17...Be7!? 18.Nge4 d5+/–) 18.Rh1+– Be7 19.Ne6 Re8 20.Nd5 Nd8?? (20...Bd8 21.Ndf4 Ne7+–) 21.Nec7 (better is 21.Ng7 c6 22.Ne8 cd5 23.Ng7+–) 21...Rg8 (21...Rf8+–) 22.Ne7 Kc7 23.Ng8 1–0. barborski – sailstudiopl, kurnik, 2012.

4.Nf3 g4 5.Nd4 d6 6.a3 e5 7.Nb3 Nc6 8.b5 Nb8 9.d4 b6? (better is 9...e4!?=) 10.de5+/– de5 11.Qd8 Kd8 12.Be5 Bg7 13.Nc3 Nbd7 14.0–0–0 Bb7 15.Bd4 Kc8 16.Rg1 Rg8 (16...a6 17.a4+/–) 17.f3 (better is 17.Bc4 Rf8 18.Nd5+/–) 17...Nd5?? (better is 17...Bf8 18.Bc4 Ba3 19.Kd2 Rf8+=) 18.Nd5 (better is 18.Bg7!? Ne3 19.Re1 Nf1 20.Rgf1 Kd8+–) 18...Bd5 19.e4 Be6 20.Bg7 Rg7 21.f4 f5 22.Nd4 Bf7 23.ef5 Kb7 24.Ne6 Be6 25.fe6 Nc5 26.f5 Rf8 27.Rd5 Rg5 28.e7 Re8 29.Re5 Nd7 30.Rd5 Kc8?? 31.Bd3 Re7 32.Rf1 Re5 33.Re5 Ne5 34.f6 Rg8 35.Rf5 Nd3 36.cd3 Rf8 37.Kd2 Kd7 38.Ke3 Ke6 39.Ke4 Rf6 40.Rh5 Kd6 41.Rg5 c6 42.bc6 Kc6 43.Rg4 Re6 44.Kd4 Rd6 45.Kc4 b5 46.Kc3 a5 47.h4 Kd7 48.h5 Rd5 49.h6 Rh5 50.Rg7 (50.Rg7 Ke6 51.Ra7+–) 1–0. mihai740609 – karthik, kurnik, 2013.

4.Nf3 g4 5.Nh4 d5 6.g3 e6 7.a3 c5 8.bc5 Bc5 9.Bg2 Nc6 10.0–0 b5 11.d4 Bb6 12.Nd2 a5 13.Nb3 Bb7 14.Nc5 Bc8 15.Qd3 Na7 16.e4 Bc5 17.dc5 Bb7 18.ed5 Rb8 19.de6 Qd3 20.ef7 Kf7 21.cd3 Rhd8 22.d4 Nc6 23.Rad1 Ne7 24.Nf5 Nf5 25.Rfe1 Bg2 26.Kg2 h4 27.Re5 Rd5 28.Rde1 Nd4 29.Bd4 h3 30.Kf1 Rd4 31.Re7 Kg6 32.R7e6 b4 33.ab4 Rbb4 34.c6 Rbc4 35.Ra1 a4 36.Ke2 Rc3 37.c7 Rc7 38.Ra6 Rcc4 39.Ra3 Kf5 40.Ra5 Nd5 41.Ra2 Ke4 42.Ra3 Nc3 43.Rc3 Rc3 44.Ra8 Rc2 45.Ke1 Kd3 46.Ra7 Rc1 0–1. ejdrzej (1605) – spaski2, kurnik, 2014.

3.e4 Nc6

4.b5+/– Na5 5.e5 Nd5 6.e6! de6?? 7.Bh8+– f6 8.Qh5 Kd7 9.c4 Nb4 10.Qh7 Nc2 11.Qc2 Bh6 12.Qd3 Ke8 13.Qg6 Kd7 14.Qh6 Nc4 15.Bc4 e5 16.Qh7 b6 17.Nc3 Bb7 18.Qf5 Kd6 19.Qd3 Kc5 20.Na4 Kb4 21.Qc3 Ka4 22.Qb3 Ka5 23.Qa3 1–0. marekt – Seimi Agus Eion, ChessWorld.net, 2005.

3.e4 d5

4.e5 Nfd7 5.e6 Nf6 6.ef7 Kf7 7.Nf3 +/–.

4.e5 Ne4? 5.e6 f6?? (5...Be6 6.Bh8 Discovered attack; 5...fe6 6.Qh5 Double attack (6.Bh8 Discovered attack)) 6.Qh5 1–0. iczker – petrawitt, kurnik, 2011.

4.e5 Ne4? 5.f3 Nf6 6.ef6 ef6 7.h4 gh4 8.Qe2 Be7 9.Bf6 Nc6 10.Bh8 Nb4 11.d3 Bf5 12.a3 Nc6 13.f4 b5 14.Nf3 b4 15.ab4 Nb4 16.Nd4 c5 17.Nf5 c4 18.Bf6 cd3 19.cd3 Rc8 20.Be7 Qe7 21.Qe7 1–0. miehnekort – gamble2525, Yahoo, 2005.

4.e5 Ng4+=.

3.e4 d6

4.Bb5 c6 5.Ba4 Bg7 6.Nf3 g4 7.Nd4 Qb6 8.a3 Ne4–+ 9.c3 Nf2 10.c4?? Nd1 11.Kd1 Bd4 12.Bd4 Qd4 13.Ra2 Qf2 14.Nc3 Qg2 15.Re1 Qh2 16.d3 Qh3 17.Rd2 Nd7 (18.b5 Nc5–+) 0–1. crystal palace – marekt, ChessWorld.net, 2004.

4.Nc3 Bg7 5.d4 Nbd7 6.Nge2 Nb6 7.Ng3 h5 8.h4 g4 9.a4 a5 10.b5 Be6 11.Bd3 Nc4 12.Bc1 Nb6 13.0–0 Bc4 14.Bc4 Nc4 15.Bg5 Qd7 16.Nf5 Rg8 17.Ng7 Rg7 18.Bf6 ef6 19.Nd5 Rg6 20.f4 0–0–0 21.f5 Rh6 22.Qd3 Nb6 23.Qd2 Rdh8 24.Qa5 Kb8 25.Nb6 cb6 26.Qb6 Rc8 27.Qa5 Rc2 28.Rac1 Qc7 29.b6 Qc6 30.Qa7 Kc8 31.Rc2 Qc2 32.Qa8 Kd7 1–0. marekt – Arran, ChessWorld.net, 2005.

4.Bc4 e5 5.d3 Nc6 6.b5 Na5=+ 7.Nd2 Nc4 8.Nc4 b6 9.Ne2 Rg8 10.Ng3 Qd7 11.Nf5 Qb5=+ 12.Rb1 Qd7 13.Qe2 Bb7 14.0–0 0–0–0 15.Bc1 Re8 16.Bd2 d5–+ 17.Nce3 de4 18.de4 Be4 19.Ng3 Bb7 20.Rfd1 Qe6 21.a4 h5 22.a5 g4 23.a6 Ba8–+ 24.Ngf5? h4 25.Nh4 Nd5 26.Nhf5? Ne3–/+ 27.Ne3 f5 28.c4? f4 29.Nc2? Bg2! 30.Bf4 Bf3 31.Qe3 Bd1 32.Rd1 ef4 33.Qf4 g3 34.fg3 Bc5 35.Nd4 Qc4 (36.Qf5 Kb8–+) 0–1. coloplayah (1985) – skelly (2055), net–chess.com, 2006.

4.Bc4 Rg8 5.Bf6 ef6 6.Qh5 Rg7 7.Nc3 Nc6 8.Bb5 a6 9.Bc6 bc6 10.Nge2 g4 (10...d5!?+=) 11.Nd4+/– Bd7 12.Nf5 (12.0–0 Be7+/–) 12...Bf5 13.Qf5 d5 14.ed5 Qe7 (14...Rg5!? 15.Qh7 cd5+/–) 15.Kd1 Rg5 16.Qf4 (16.Qd3 Qb4 17.Rb1+– (17.dc6?! Rd8 18.a3 Qc5 19.Re1 Re5+=)) 16...Rd8? (better is 16...cd5!? 17.Re1 Re5 18.Re5 fe5 19.Qg4 c6+/–) 17.dc6 (better is 17.Ne4 Bg7 18.dc6+–) 17...Qb4?? (17...Qe6 18.b5 Bd6+/–) 18.Qf6 (better is 18.Re1 Re5 19.Ne4 Be7 20.Nf6 Bf6 21.Re5 Be5 22.Qb4 Ba1 23.Qg4 Bd4+–) 18...Rd2 19.Kd2 Rd5 20.Ke1 Rd6 21.Rb1?? Rf6–+ 22.Rb4 Bb4 23.Ke2 Bc3 24.Kd3 Rc6 25.h3 g3! 26.fg3 Bh8 27.Re1 Re6 28.Rb1 Rd6 29.Kc4 Be5 30.Re1 f6 31.Re2 Kf7 32.g4 Kg6 33.h4 Rd4 34.Kc5 Rg4 35.Kc6 Rh4 36.Kb7 ½–½. Hedlerfog,Robert (1710) – Valembois,Pierre, Helsingor DEN, Politiken Cup, 2012.

4.d3 Bg7 5.Nd2 Be6 6.Ngf3 h6 7.Nd4 Qd7 8.Ne6 Qe6 9.Be2 0–0 10.0–0 Nh7? (10...a5 11.a3+=) 11.Bg7 (11.Bg4!? f5 12.Bf5+–) 11...Kg7+/– 12.f4 Nc6 13.f5 Qf6 14.Rb1 a6 15.a3 Qd4 16.Kh1 Qa7 17.Nf3 e5 18.f6 (18.fe6!? fe6 19.c3+=) 18...Nf6+= 19.c3 (19.Qd2 Ng4 20.Nd4 Ne3 21.Qe3 Nd4=) 19...Rad8 (19...Ng4 20.Nd4 ed4 21.Bg4 dc3 22.Qc2+=) 20.d4? (better is 20.Qc1!? Ng4 21.d4 ed4 22.cd4=) 20...ed4 21.cd4 d5 (21...Ne4!? 22.Rc1 Rfe8–/+) 22.e5+= Ne4 23.Bd3 (23.Rc1 f6 24.ef6 Rf6–/+) 23...Nd4 24.Be4 (24.Qe1!? Nf3 25.gf3–/+) 24...de4–+ 25.Nd4 (25.Nh4 Nf3 26.Nf5 Kh7 27.Qc2–/+) 25...Qd4 (25...Rd4?! 26.Qh5 e3 27.e6 fe6 28.Rf8 Kf8 29.Qh6 Ke7 30.Qg5 Ke8 31.Re1=) 26.Qd4 Rd4 27.Rbc1 c6 28.Rfe1 (28.h4 gh4 29.Rf4 f5 30.ef6 Rf6 31.Rh4 Re6–+) 28...Re8 29.Rc5 f6 (29...Rd5!? 30.g4 Ree5 31.Rc4–+) 30.ef6 Kf6 0–1. Zaytsev,Boris – Terskiy,Sergey, Gornozavodsk op, 2007.

4.d4 Ne4 5.d5 Nf6+=.

4.d4 Bg7 5.e5 (better is 5.Bd3!?=) 5...de5–/+ 6.de5 Qd1 7.Kd1 Ng4 8.Ke1 Ne5 9.Nc3 Nec6 10.b5 Nb4 11.Kd2 Be6 (better is 11...Bf5!? 12.Na4 0–0 13.Bg7 Kg7–/+) 12.a3= Nd5 13.Nd5 Bb2 14.Nc7 Kd7 15.Na8 Ba1 16.Bd3 b6 (16...Bf6 17.Ne2+=) 17.Nf3= Bd5? (better is 17...Bf6 18.Rd1 g4=) 18.Ra1+– Ba8 19.Ne5 (19.Ng5 Bg2 20.c4 Bb7+/–) 19...Ke6 (19...Ke8!? 20.f3 f6+=) 20.Re1+/– Kf6 21.Bc4 (better is 21.Ng4!? Kg7 22.Re7 Bg2 23.Ra7+–) 21...Rd8= 22.Kc1 e6 23.Ng4 Kg7 24.f3 h6 25.h3 Rd4 26.Bb3 a6 27.a4 ab5 28.ab5 Nd7 29.Ne5 (better is 29.c3!? Rd6 30.Ne3=) 29...Ne5–/+ 30.Re5 Rb4 31.Kb2 Kf6 32.Re2 Rb5 33.Rd2 Bd5 34.Kc3 Bb3 35.cb3 Ke5 36.b4 f5 37.Kc4 Rd5 38.Ra2 b5 39.Kc3 Kf4 40.Ra6 e5 41.Rh6–/+ Kg3 42.Rg6+= Kg2 43.Rg5 Kf3 44.Rf5 Ke4 45.Rh5 Rd3 46.Kc2 Rg3 47.h4 Rh3 48.Rh8 Ke3 49.h5 e4 50.h6+= Rh2 51.Kc3 Kf3 52.h7 Ke2 53.Kd4 e3 54.Kc5 Rh5 55.Kd4?? Rh4 56.Kc5= Rh5 57.Kb6 1–0. j1a9n55 – milanio, kurnik, 2012.

4.f4 gf4 5.Bf6 ef6 6.Nf3 f5 7.Qe2 Bg7 8.d4 0–0 9.e5 Re8 10.Na3 de5–+ 11.de5 Be5! 12.Ne5 Qd4 13.Rd1 Qb4 14.Qd2 Qa3 15.Be2 Re5 16.Qd8 Kg7 17.Qg5 Kf8 18.Rd8 Re8 19.Re8 Ke8 20.0–0 Qe3 21.Rf2 Be6 22.Qg8 Kd7 23.a4 c5 24.Qg5 Nc6 25.a5 Na5 26.Qf6 Nc6 27.Qb2 Kc7 28.Kf1 Nd4 29.Ba6 ba6 30.Qa1 f3 31.Qa5 Kb7 32.Qd2 fg2 33.Rg2 Bc4 34.Qd3 Re8 35.Re2 Bd3 36.h4 Rg8 37.cd3 Qe2# 0–1. Pierred (2105) – SirGraves, Rated game, 1m + 2s, 2005.

4.h3 Bg7 5.Nf3 0–0 6.d4 Ne4=+ 7.Bd3 d5 8.Be4 de4 9.Ng5 Qd5 10.h4 Nc6 11.Qh5 h6–+ 12.Nc3 Qf5 13.g4 Qg4 14.Qg4 Bg4 15.Nge4 Nb4 16.Kd2 f5 17.Nc5 Bd4 18.Ne6 Rfd8! 19.f4 Rd6 20.Nd4 Rd4 21.Kc1 Rf4 22.a3 Nc6 23.Nd5 Re4 24.Nc7 Rd8 25.a4 f4 26.Bc3 Rd7 27.Nb5 e5 28.Rg1 h5 29.a5 f3 30.Be1 Re2 31.Nc3 Nd4 32.Rg4 hg4 33.Ne2 Ne2 (34.Kb2 g3–+) 0–1. hardgamer – pierre (1955), internet, 2006.

4.h4 Rg8 5.Bf6+= ef6 6.Nc3 (6.hg5!? fg5 7.Rh7+=) 6...g4= 7.Nge2 h5 (7...Nc6 8.Nd5=) 8.Nf4 Rh8 9.d4 Bh6 (better 9...Bg7!?+=) 10.Nh5+– Nc6 (10...Bf8!? 11.Ng3 d5+–) 11.b5+– Ne7 (better 11...Nb8+–) 12.Nf6 Kf8 13.Bc4 Ng6 14.Ng4 Nh4 15.Nh6 Rh6 16.g3 Ng2 17.Kd2 Qg5 18.Kd3 Bg4 (18...Bh3+–) 19.Qd2 Qe3 (19...Qd2 20.Kd2 Rh1 21.Rh1 Kg7+–) 20.fe3 (20.fe3 Rh1 21.Rh1+–) 1–0. Speedy – Macho, internet, 2017.

4.Nf3 g4

5.Bf6 ef6 6.Nd4 a5 7.b5+=.

5.Bf6 ef6 6.Nd4 a5 7.g3 ab4 8.Bb5 c6 9.Be2 h5 10.Bc4 Bg7 11.Nf5 Bf5 12.ef5 d5 13.Be2 Qc8 14.Bd3 c5 15.Qe2 Kd8 16.0–0 Re8 17.Qd1 c4 18.Be2 Qf5 19.c3? b3! 20.a3 Qe4 21.Re1 Qc2 22.Kf1 Qb2 23.d4 Bh6 24.Nd2 Bd2 25.Qb1 Qc3 26.Rd1 Re4 27.Bc4 Qc4 28.Kg2 Bc3 29.Rc1 b2 30.Rc3 Qc3 31.Ra2 Qf3 32.Kg1 Re2 (33.Qf1 b1Q 34.Re2 Qf1 35.Kf1 Qh1) 0–1. coolerdude – nitousche, ChessWorld.net, 2004.

3.e4 e5

4.Nf3 Rg8 5.Ne5+– (worse 5.Be5 g4 6.Nd4 Ne4=) 5...d6 6.Nd3 Ne4? (better 6...Bg7 7.Nc3 Qe7+=) 7.Qe2+– f5 8.f3 Qf6?? (8...Qe7+–) 9.Bf6 Rg6 (9...Kf7 10.Bb2 Nf6 11.h4+–) 10.fe4 (better 10.Bd4!? Nc6 11.Bf2 Kd8 12.fe4 fe4+–) 10...Rf6 11.ef5 Be7 (11...Kd8 12.g4+–) 12.Qh5 Rg6 13.fg6 Bf6 14.g7 Ke7 (14...Kd7 15.g8Q Kc6 16.Ne5 Kb6 17.Nc4 Kb5 18.Na5 Kb6 19.Qc8 Ba1 20.Qb7) 15.g8Q Kd7 (15...d5 16.Qhe8 Kd6 17.Qgf8 Be7 18.Qfe7) 16.Qge8 (16.Qhe8) 1–0. Orkide – 5hty4u, internet, 2017.

4.Be5 Bb4

5.Nc3 d6 6.Bb5 Nbd7 (6...c6 7.Bf6 Qf6 8.Nd5+=) 7.Bf6 Qf6 8.Nd5 Qe5 9.Nc7 (9.Nb4?! Qb5 10.Nd5 Qa5=) 9...Kd8 10.Na8 Re8 (10...Qb5 11.Nf3 Re8+/–) 11.Bd3 d5 12.Rb1 Ba5 13.Nf3 Qb8 14.Ng5 Qa8 15.Qh5 de4 16.Nf7 Ke7 17.Bc4 Nf6 18.Qc5 Kd7 19.Qd6# 1–0. Taulien,Hans_Juergen – Ferreira,Fernando, remoteschach.de, 2002.

5.Qf3 Be7+=.

4.Be5 Nc6

5.Bb2 Bb4 6.Qf3 Be7 7.e5 Ng8 8.Bc4 Nh6 9.Qh5 d5 10.ed6 Qd6 11.Bg7 Rg8 12.Bh6 Qg6 13.Be2 Nd4 14.Qg6 Rg6 15.Bd3 Rh6 16.Ne2 Ne2 17.Ke2 Bd6 18.Nc3 Bh2 19.Rab1 c6 20.Ne4 g4 21.Ng5 f5 22.Bc4 Kf8 23.Nf7 Rh4 24.g3 Rh5 25.Nd6 b5 26.Bd3 a6 27.c4 bc4 28.Bc4 Bd7 29.Rb7 Rd8 30.Kf1 Be6 31.Be6 Rd6 32.Rf7 Ke8 33.Rf5 Rh3 34.Bf7 Ke7 35.Kg2 Rdh6 36.Re1 Kd7 37.Re4 Bg3 38.fg3 Rh2 39.Kg1 Rh1 40.Kf2 R6h2 41.Ke3 Re1 42.Kf4 Re4 43.Ke4 Rd2 44.Kf4 Rd4 45.Ke3 Rd1 46.Bc4 Kd6 47.Ba6 Rg1 48.Kf4 Ra1 49.Bc4 Rb1 50.Bb3 Re1 51.Kg4 c5 52.Rf6 Kd7 53.Kg5 Rg1 54.g4 Rh1 55.Rh6 Rc1 56.a4 c4 57.Rh7 Kd6 58.Ba2 c3 59.Bb3 Kc6 60.Rh6 Kc5 61.Rf6 Rb1 62.Bc2 Rb2 63.Rf2 Rb8 64.Kh6 Rd8 65.g5 Rh8 66.Kg7 Rd8 67.g6 Rd6 68.Kh7 Kb4 69.g7 Rd7 70.Rf4 Ka3 71.Kh8 Rg7 1–0. COMP – COMP, blitz, 2002.

5.Bb2 Bb4 6.Nh3 Rg8 7.Qf3 Be7 8.Qe2 d5 9.ed5 Nd5 10.Ng1 Rg6 11.Qc4 Re6 12.Ne2 Bf6 13.Qb3 Na5 14.Qd3 Nb4 15.Qd8 Kd8 16.Bf6 Rf6 17.Kd1 Rf2 18.Nbc3 Bf5 19.d3 Bg4 20.Rb1 Nbc6 21.Rb5 Rf5 22.Kc1 Rb5 23.Nb5 Be2 24.Be2 a6 25.Nc3 Nd4 26.Rf1 Ke7 27.Bg4 Nac6 28.Re1 Kf8 29.Nd5 Rd8 30.Nc7 Nb4 31.Re5 Na2 32.Kd2 Nb4 33.Rg5 Ndc2 34.Bf5 h6 35.Rh5 Rd6 36.Be4 b5 37.Kc3 Ke7 38.Rf5 f6 39.Rf2 Kd8 40.Na8 a5 41.Rc2 f5 42.Rd2 fe4 43.de4 Rd2 44.Kd2 Kc8 45.Nb6 Kc7 46.Nd5 Nd5 47.ed5 Kd6 48.Kc3 Kd5 49.Kb3 b4 50.g4 Ke4 51.h4 Kf4 52.g5 hg5 53.hg5 Kg5 54.Ka4 Kf5 55.Kb3 Ke5 56.Ka4 Kd5 57.Kb3 Kc5 58.Ka4 Kc4 59.Ka5 b3 60.Kb6 0–1. COMP – COMP, blitz, 2002.

3.e4 Bg7

4.c4 d6 5.Qc2 a6 6.Nf3 h6 7.d4 g4 8.Nfd2 0–0 9.Nc3 Nc6=+ 10.d5 Nb4 (11.Qb1 a5=+). Arran – jelgava, ChessWorld.net, 2005.

4.Bc4 Nc6=.

4.d3 Nc6 5.c3 0–0 6.Be2 d5 7.ed5 Nd5 8.b5 Bf5?? (better 8...Ne5 9.d4 Ng6=) 9.bc6+– bc6 10.Nf3 Bh6? (better 10...Nf4!? 11.Ng5 Bd3+–) 11.0–0 Nf4 12.Ne5?? (better 12.Nd4 Bd7 13.Ba3+–) 12...Qd5= Threatening mate... how? 13.Nf3 Rab8 14.c4 Qc5?? (14...Qe6 15.Be5 g4–/+) 15.d4 (better 15.Bd4 Qd6 16.c5+– (16.Ba7?! Bg7+–)) 15...Qb6 16.Ba3 Rfe8? (16...Bb1 17.Re1+= (worse 17.Qb1 Ne2 18.Kh1 g4=+)) 17.Bc5 (better 17.g3!? Ne2 18.Qe2+–) 17...Qb2+– 18.Nbd2 Bg7? (18...g4 19.Nh4 Bc2=) 19.Nb3?? (19.Ba7 Rb7 20.Bc5 e5 21.Ne5 Re5 22.de5 Qe5+–) 19...h6?? (better 19...Ne2 20.Kh1 Nc3=+) 20.Re1+– e5 21.de5 (21.Ba7 Ra8 22.Bc5 ed4 23.Nfd4 Ne2 24.Re2 Re2 25.Nf5 Qc2 26.Qc2 Rc2 27.Ng7 Kg7+–) 21...Be5 22.Ne5 (22.Ba7?! Rbd8 23.Bd4 Bd4 24.Nfd4 c5+=) 22...Ne2 (22...Qe5 23.Be3 Rbd8 24.Bf4 Qf4+–) 23.Re2 Rbd8 (23...Bc2 24.Qe1 Rbd8 25.Nd7 Re2 26.Qe2 Rd7 27.Qe8 Kh7 28.Qd7+–) 24.Qd8! Rd8 (24...Qa1 25.Na1 Rd8+–) 25.Rb2 f6 26.Nc6 Rd7 27.Ne7 Kf7 28.Nf5 Kg6 29.Nbd4 a5 30.g4 h5 31.Ne7 Kf7 32.gh5 Kg7 33.Ndf5 Kh8 (33...Kf7 34.Rb8 g4 35.Re1 Rd1 36.Nh6 Kg7 37.Nef5 Kh7 38.Rd1 g3 39.Rd7) 34.Ng6 (34.Rb8 Kh7 35.Ng6 Rd8 36.Rd8 g4 37.Rh8) 34...Kg8 35.Nh6 (35.Rb8 Kf7 36.Re1 Rd8 37.Re7 Kg8 38.Rd8) 35...Kg7 36.Bf8 Kh7 37.Re1 (37.Ng4 Kg8 38.Re1 Rf7 39.Bh6 Kh7 40.Rb8 Rf8 41.Re7 Rf7 42.Rf7) 37...c5 (37...g4 38.Ng4 Kg8 39.Nf6 Kf7 40.Nd7 Kg8 41.Re7 c5 42.Nf6) 38.Rbe2 (38.Re7 Re7 39.Ne7 a4 40.Rb7 f5 41.Ng6) 38...Rb7 (38...Rg7 39.Bg7 Kg7 40.Nf5 Kg8 41.Re8 Kh7 42.R1e7) 39.Re7 Re7 40.Re7 1–0. Crusader Rabbit (1745) – WarlpiriMan, ChessWorld.net, 2013.

4.e5 Nh5 5.Qh5 d6 6.Qg5 de5 7.Qg7 Rf8 8.Qe5 Nc6 9.Qg3 Bf5 10.Bb5 e6 11.Bc6 bc6 12.Nf3 Bc2 13.0–0 Bd3 14.Re1 Qd7 15.Ne5 Qd6 16.Nd3 Qg3 17.hg3 0–0–0 18.Nc5 h5 19.Nc3 h4 20.gh4 Rh8 21.g3 Rdg8 22.N3e4 Rh4 23.Re3 Rh3 24.Kf1 Rh1 25.Ke2 Rh2 26.Bf6 Kb8 27.Bh4 a6 28.Na6 Kb7 29.Nac5 Kb6 30.a4 f5 31.Nf6 Rg6 32.Re6 f4 33.Nfd7 Ka7 34.Rg6 fg3 35.Bg3 Rh3 1–0. badboy1221 – DOORMAN, Live Game Caissa's Web, 2006.

4.Nf3 h6 5.h4 g4= 6.Nh2 Ne4?? 7.Bg7+– Rh7 8.Qg4?? d5+= 9.Bb2?? Bg4–+ 10.Ng4 Nc6 11.a3 d4 12.b5 Ne5?? 13.Ne5=+ Rc8?? 14.Nf3+/– c5 15.bc6+– Rc6 16.Bb5 Kf8? 17.Bc6 bc6 18.Bd4 Qd6 19.d3 Nf6 20.0–0 Ng4 21.Nbd2 f5 22.Nc4 Qd5 23.Rab1 Kf7 24.Rfe1 c5 25.Bc3 Kg6 26.Nfe5 Kh5 27.Ng4 Kg4 28.Ne3 (28...Kh4 29.Nd5+–) 1–0. jelgava – Tricky.1, ChessWorld.net, 2005.

4.h4 gh4 5.e5 Nd5 6.Qg4 Kf8 7.Qe4 Nb6 8.Rh4 d5 9.Qf4 Na4 10.e6 f6 11.Be5 Be6 12.Bc7 Qc8 13.b5 Nb2 14.Nf3 Bf7 15.Nc3 Nd7 16.Qg3 e5 17.Bd6 Kg8 18.Nd5 Bd5 19.Rg4 Kf7 20.Rg7 Ke8 21.Re7 Kd8 22.Qg7 Rg8 23.Qh7 Nc4 24.Bc4 Rf8 25.Bd5 Rb8 26.Be6 Nc5 27.Bc8 Nd3 28.cd3 f5 29.Rd7 Kc8 30.Rc1 1–0. COMP – COMP, blitz, 2002.

4.e5 Nd5

5.a3 d6 6.Bc4 Nb6 7.Be2 =+.

5.a3 d6 6.Bc4 de5 7.Qe2 Nf4 8.Qf1 Nc6 9.Nf3 Nd4 (9...Bf5 10.d3–/+) 10.Bd4 ed4 11.d3 (better is 11.Ng5!? e6 12.Ne4+=) 11...h6 12.c3? (better is 12.Nbd2–+) 12...dc3 13.Nc3 (13.Ra2–+) 13…Bc3 (13...Bc3 14.Nd2 Ba1–+) 0–1. PoPer – henrigrob, Live Game Caissa's Web, 2004.

5.a3 d6 6.Bc4 de5 7.Qh5!? e6 8.Nh3 =+.

5.a3 d6 6.d4 Bf5=.

5.b5 0–0 6.c4 (6.h4 f6+/–) 6...Nf4+= 7.g3 (7.h4!? d6 8.hg5 de5 9.Qf3+=) 7...Ng6= 8.d4 d6 9.Bg2 (9.h4!? gh4 10.Qh5=) 9...de5–/+ 10.d5 Bf5 (10...Nd7 11.Nc3–/+) 11.Nf3 (11.Qh5 Bd3 12.Nd2 a6+=) 11...Nd7 (11...g4 12.Nfd2–/+) 12.Ng5+= Nc5 13.Nc3? (better is 13.0–0 h6 14.Ba3+=) 13...Nd3–+ 14.Kf1 (14.Ke2 Nb2 15.Qb3 Bd3 16.Kd2 e6 17.Qb2 Bc4–+ (17...Qg5?! 18.Kd3 e4 19.Be4–/+)) 14...Nb2 15.Qb3 Bd3 16.Kg1 Nc4 17.Nce4 (17.Rd1 e4! 18.Be4 Be4 19.Nge4 Nd6–+) 17...Be4 18.Qc4 (18.Ne4 Nd6 19.h4–+) 18...Qd5! 19.Qd5 Bd5 20.Bd5 e6 (20...h6!? 21.Nf7 Rf7–/+) 21.Bb7+= Rab8 22.Bc6 (22.Ba6 Rfd8+=) 22...Rfd8 23.Kg2 Rd2 (23...Ne7!?–/+) 24.Rhd1+= Rbd8 (24...Rd4 25.Rac1+=) 25.Rd2= Rd2 26.Be8 Nh8 27.a4 Kf8 28.Bc6 h6 29.Nf3 Rc2 (29...Rd6 30.Rc1=) 30.Re1 (30.Rd1 Bf6+=) 30...Ng6= 31.Nh4 (31.Be4!? Rc5 32.Bg6 fg6 33.Re4=) 31...Nh4+= 32.gh4 Rc4 33.a5 Rh4 34.Kg3 Rb4 35.a6 f5 36.h4 Bf6 37.h5 Bg5 38.Rd1 e4 39.Rd8?? Bd8–+ 0–1. iczker – alibikometa, kurnik, 2012.

5.b5 c6 6.c4 Nc7 7.Qh5 h6 8.Nf3 cb5 9.cb5 Nb5?? (Better is 9...d6=) 10.Bb5 Nc6 (10...Qa5 11.Nc3 Qb4 12.Rb1+–) 11.Bc4 (Better is 11.e6 0–0 12.Bg7 Kg7 13.h4+–) 11...d6 (11...0–0 12.h4 Qb6 13.Bb3+–) 12.0–0 e6 13.Ba3 de5 14.Nc3 Qa5 15.Nb5 a6 16.Nd6 Kd7 17.Qf7 Ne7 18.Be6 Kd8 19.Nb7! Bb7 20.Qe7 1–0. bashful – henrybird, Live Game Caissa's Web, 2004.

5.b5 c6 6.Qh5 Nf4 7.Qg5 Ne6+=.

5.b5 d6 6.ed6?? (better is 6.Qh5 Be5 7.Be5 de5 8.Qg5=) 6…Bb2–+ (6...Bb2 7.c4 Ba1 8.cd5 Qd6–+) 0–1. Raver – Wall,Bill, internet, 2003.

5.b5 e6 6.c4 Nf4 7.g3 Ng6 8.d4 b6 9.Bg2 c6 10.a4 Bb7 11.Nc3 0–0 12.a5 d5 13.a6 Bc8 14.cd5 cd5 15.Nge2 Nd7 16.0–0 h6 17.Ba3 Re8 18.Bd6 f6 19.f4 f5 20.Qb3 gf4 21.Nd5 ed5 22.Bd5 Kh7 23.Ba8 fg3 24.Ng3 Qg5 25.e6 f4 26.ed7 Bd7 27.Bf4 Nf4 28.Qd1 Ra8 29.Qc2 Bf5 30.Qc1 Ne2 31.Kf2 Nc1 32.Rac1 Qf4 33.Kg2 Qd4 34.Nf5 Qg4 35.Ng3 Rg8 36.Rf7 Kh8 37.Ra7 Be5 38.Rf1 Bg3 39.Rff7 Bb8 40.Kf2 Ba7 41.Ra7 Qf4 42.Ke2 Re8 43.Kd3 Qd6 44.Kc4 Rc8 45.Kb3 Qd3 46.Kb2 Rc2 47.Kb1 Qd1 0–1. StevieTaylor54 (1735) – JUANKARODA (1750), lichess.org, 2020.

5.Qg4 h6 6.Qe4 c6=.

5.Qh5 e6 6.Nh3 h6=.

3.e4 Rg8

4.Bc4 Bg7? (better 4...d5 5.ed5 Nd5=) 5.e5+– Ne4 6.d3 (better 6.Bd5 Nd6 A) 7.ed6 Bb2 8.Qf3 e6 9.Bb7 g4–+ (9...Ba1 10.Ba8 cd6 11.Qd3+=); B) 7.Qh5+–) 6...Nf2? (better 6...Nd6 7.Bb3 Nc6+=) 7.Kf2+– Nc6 (7...d5 8.Bb3+–) 8.Qf3 (better 8.Qh5 e6 9.Qh7+–) 8...e6 9.d4 a6 (9...Nb4 10.Qb3 Nc6 11.Qh3+–) 10.Nd2 (10.Qh5 h6 11.a3 d6+–) 10...Nb4 11.Bb3 Rf8 (better 11...d6 12.Ne4 Nc6+–) 12.Ba3 a5 13.c3 Nc6 (13...f6 14.Qh5 (14.cb4 fe5 15.Qf8 Bf8–/+) 14...Rf7 15.cb4+–) 14.Bf8 Bf8 15.Ne2 b5 Black intends a4 (15...d6 16.Ba4+–) 16.Nf1 (16.Rhf1 Qe7+–) 16...Ra7 17.Ne3 a4 (17...Bb7 18.Qh5 a4 19.Bc2+–) 18.Bc2 Bb7 19.Bh7 (better 19.Be4!? h5+–) 19...Nd4 20.Qh5 (20.cd4 Bf3) 20...Ne2 (20...Nc6 21.Ng4 Bg7+–) 21.Ke2 d5 (21...Qe7 22.Raf1 d6 23.Rf7 Qf7 24.Bg6 Qg6 25.Qg6 Kd7 26.Rf1+–) 22.Rhf1 Qe7 (22...Kd7 23.Bd3 Bc5 24.Rf7 Be7 25.Raf1+–) 23.Ng4 c5 (23...b4 24.Rf7! Ba6 25.Ke1 Qf7 26.Bg6+–) 24.Nf6 (better 24.Bg8 Ba6 25.Rf7 b4 26.Kf2+–) 24...Kd8 25.Ng8 Qc7 26.Qg5 (worse 26.Qf7 Qe5 27.Kd1 Bd6+–) 26...Be7 (26...Kc8+–) 27.Qg7 Ba6 (27...Qa5 28.Rf7 Kc7 29.Ne7+–) 28.Rf7 b4 29.Kf3 Qb7 (29...Bb5 30.Ne7 Be8 31.Nc6 Bc6 32.Qf8 Be8 33.Rc7 Rc7 34.Bg6+–) 30.Re7 Qe7 31.Ne7 Re7 32.Qf8 Kd7 33.Bg8 (better 33.Bg6 Bc4 34.Qb8 bc3 35.Qd6 Kc8 36.Qe7+–) 33...bc3 34.Qb8 (34.Rb1 c2 35.Rb8 Kc6 36.Qe7 Be2 37.Kf2 c1Q 38.Qb7) 34...Bd3+– 35.Qd6 Ke8 36.Be6 Be4 37.Ke2 (37.Ke2 Rb7 38.Rf1 Bf3 39.Rf3 Rb2 40.Ke3 d4 41.Kf4 Rb7 42.Ke4 d3 43.Rf8) 1–0. Crusader Rabbit (1650) – WarlpiriMan, ChessWorld.net, 2013.

4.Qe2 d5 5.Bf6 ef6 6.ed5 Qe7 7.a3 Qe2 8.Ne2 Bg7 9.c4 f5 10.d4 Nd7 11.Nbc3 Nb6 12.c5 Nd7 13.Nb5 Kd8 14.d6 cd6 15.Nd6 Rf8 16.Nf5 Bh8 17.Rd1 Nf6 18.Nd6 Kd7 19.Nc3 Ne8 20.Bb5 Kd8 21.Be8 (21...Re8 22.Ne8 Ke8 23.Nb5+–) 1–0. Trkn – guest6747, ICC, 2004.

4.Bf6 ef6 5.Bc4 d5 6.ed5 Bf5 7.Nc3 Nd7 8.a3 Ne5 9.Qe2 Qe7 10.Kd1 0–0–0 11.Bb3 c6 12.dc6 Nc6 13.Qe7 Be7 14.h3 h5 15.Bf7 Rgf8 16.Bh5 Rh8 17.Bf3 Nd4 18.d3 Nf3 19.Nf3 Bd3 20.cd3 Rd3 21.Kc2 Rdd8 22.Rhe1 Bd6 23.Ne4 Rhf8 24.Kb3 Kb8 25.Rac1 f5 26.Neg5 Bf4 27.Rc2 Rd3 28.Ka2 a6 29.Ne6 Rf3 30.gf3 Re8 31.Ree2 Black resigned 1–0. themuttsknutts (1605) – Castlegrande, ChessWorld.net, 2013.

3.Nf3 g4

4.Ne5 d6 5.Nc4 b5 6.Na5 c6 7.g3 Qb6 8.Bg2 d5 9.0–0 Bg7 10.Nc3 e5 11.e3 0–0 12.Ne2 c5 (12...Re8 13.d4+=) 13.a3 (13.Be5!? Rd8 14.a3+/–) 13...e4 14.d4 (14.d3!? Rd8 15.Nb3=) 14...c4+= 15.Nf4 Be6 16.Ne6 fe6 17.a4 Nbd7 18.ab5 Qb5 19.c3 a6 20.Qa4 Qa4 21.Ra4 Rfc8 22.Rfa1 h5 23.Nb7 Rcb8 24.Nc5 Nc5 25.dc5 a5 (better is 25...Nd7!? 26.Ra5 Ne5 27.Ra6 Ra6 28.Ra6 Nd3=) 26.Ra5+/– Ra5 27.Ra5 Nd7 28.Ra7 Ne5 29.Bf1 Nd3 30.Bd3 ed3 31.Kf1 e5? 32.Rd7 d4 33.cd4 Rb4 34.Ba3?? Rb1–+ 35.Kg2 d2 36.de5 d1Q 37.Rd1 Rd1 38.e6 Rd8 39.c6 c3 40.e7 Re8 41.c7 c2 42.Bc1 Be5 43.f4 Bc7 44.h3 Re7 45.hg4 hg4 46.Kf2 Re4 47.Ke2 Ba5 48.Kd3 Re8 49.Kc2 Kf7 50.Kd3 Ke6 51.e4 Rd8 52.Kc4 Rc8 53.Kb5 Rc1 54.Ka5 Rg1 55.f5 Ke5 56.f6 Kf6 57.Kb5 Ke5 58.Kc5 Ke4 59.Kd6 Rg3 (59...Rg3 60.Kc5 Rd3 61.Kb4 g3 62.Kb5 g2 63.Kc5 g1Q 64.Kc4 Qb1 65.Kc5 Qc2 66.Kb5 Rb3 67.Ka5 Qa2) 0–1. rryy44 – ficherschi01, kurnik, 2012.

4.Ne5 d6 5.Nc4 b5 6.Ne3 d5+= 7.Bf6 (7.c3 a5+=) 7...ef6 8.c3 (better is 8.d4+=) 8...g3?? (better is 8...a5 9.Na3 c6–/+) 9.hg3+/– h5? (9...a5 10.ba5 Be6 11.Qc2+/–) 10.Qb3 (10.a4 ba4 11.Qa4 c6+–) 10...d4 (better is 10...Be6!? 11.Nc2 Nc6+/–) 11.cd4+– Qd4 12.Nc3 Bb4?? 13.Nc2 Qg4 14.Nb4 Be6 15.Qb2 Qg7 16.Ne4 (16.Ne4 Kf8 17.Nd3+–) 1–0. mic (2115) – jdaly, net–chess.com, 2008.

4.Ne5 d6 5.Nc4 d5 6.Ne5 Bf5 7.e3 e6 8.a3 Bd6 9.d4 Be5 10.de5 Ne4 11.Nd2 Qh4 12.g3 Qg5 13.Bb5 Nd7 14.Ne4 Be4 15.Bd7 Kd7 16.0–0 h5 17.c4 h4 18.cd5?? (Better is 18.Qd2–/+) 18...hg3–+ (18...Bd5 19.e4 hg3 20.ed5+=; < 18...ed5 19.e6 fe6 20.Bh8 hg3 21.Be5 gf2 22.Rf2 Qe5 23.Qd4 Qd4 24.ed4=+) 19.de6 Ke6 20.fg3 (20.Qb3 Bd5 21.Qd5 Kd5 22.Rfd1 Kc4 23.Rac1 Kb3–+) 20...Qe3 21.Rf2 Qg3!! 22.Kf1 Bd3 23.Ke1 Qg1 24.Kd2 Qf2 25.Kc1 Qe3 26.Qd2 Qd2 27.Kd2 Rad8 28.h4 Rh4 29.Rg1 Rh3 30.Ke1 Bb5 31.Rg4 Rh1 32.Kf2 Rh2 33.Kg3 Rb2 34.Rf4 Rb3 35.Rf3 Rf3 36.Kf3 Ke5 37.Kf2 f5 38.Ke1 Rd3 39.a4 Ba4 40.Ke2 Kd4 41.Kf2 f4 42.Kg1 f3 43.Kf2 c5 44.bc5 a5 45.Kf1 Ke3 46.Kg1 f2 47.Kg2 Bc6 48.Kg3 f1Q 49.Kh4 Qf4 50.Kh3 Kf2# 0–1. Sigma Chess – Sigma Chess, 2000.

4.Ne5 d6 5.Nd3 Bg7 6.c4 h5 (6...Bf5 7.Nc3=+) 7.a3 (7.e4 e5 8.Nc3 Nc6=+) 7...a5 (7...Bf5 8.Nc3=+) 8.Nc3 (8.e4 e5 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Nc6=) 8...ab4 (8...Bf5 9.Qa4 Qd7 10.b5=+) 9.ab4 Ra1 10.Qa1 Nc6 (10...e5 11.Qa4 Bd7 12.Qa8=) 11.Nd5 (11.Qa4=) 11...0–0 (11...e5!?=) 12.Nf6 (12.b5 Ne5 13.Ne5 Nd5 14.Ng4 Bb2 15.Qb2 Bg4 16.cd5 Bf5+–) 12...Bf6 (12...ef6 13.h3+=) 13.Bf6+– ef6 14.e3 (14.Nf4 h4+–) 14...Ne5 (14...h4 15.h3 g3 16.fg3 hg3 17.Be2+–) 15.Nf4+– h4 16.Be2 Qd7 (16...Re8 17.h3+–) 17.Nd5 (17.h3 gh3 18.Rh3 Qd8 19.Rh4 Ng6 20.Ng6 fg6+–) 17...Kg7 (17...Qd8 18.f4 gf3 19.gf3+– (19.Bf3?! c6 20.Nf4 Nc4+=)) 18.f4 (18.h3 f5+–) 18...gf3 19.gf3 c6 (19...Qd8 20.Rg1 Ng6 21.Bd3+–) 20.Rg1 Kh8?? (20...Kh6 21.Qd4 Ng6 22.Nf4+–) 21.Nf6 (better 21.Qd4 Ng6 22.Bd3+–) 21...Qf5 (21...Qe7 22.Nh5 f6 23.Qd4+–) 22.Ng4 (22.Ne4!? f6 23.Qd4 d5 24.cd5 cd5+–) 22...f6 23.Qd4 Nf3 (23...Rg8 24.Rf1 Ng4 25.fg4+–) 24.Bf3 Qf3 25.Nf2 (25.Qd6?! Rg8 26.h3 b6+–) 25...Qg3?? (25...Qh5+–) 26.hg3 hg3 27.Rg3 Bf5 (27...Bg4 28.Qg4 Ra8 29.Qh5) 28.Qh4 Bh7 29.Ng4 (29.Ne4 Rf7 30.Nf6 Rg7 31.Qh6 Rg3 32.Qh7) 29...Rf7 (29...Rg8 30.Nf6 Rg7 31.Qh6 Rg3 32.Qh7) 30.Nf6 Rg7 31.Qh7! Rh7 (31...Rh7 32.Rg8 Mate attack) 32.Rg8 1–0. FeegLood (2755) – HenryGrob (2490), lichess.org, 2016.

4.Ne5 d6 5.Nd3 Bg7 6.e4 e6 (6...Nc6 7.Be2=) 7.Be2 h5 8.0–0 e5 9.f4 Ne4 10.fe5 Be6 11.Rf4 d5 12.Nc3 Ng5 (12...Nc3!? 13.Bc3 Qg5=) 13.Na4+= b6 14.Rb1 (14.a3 g3 15.hg3 Ne4=) 14...Qd7= 15.Ndc5 (better is 15.Nc3=) 15...bc5–/+ 16.Nc5 Qe7 17.Bb5 (17.a3 a5–/+) 17...c6–+ 18.Ba4 Ne4 19.d4 (19.Ne4 de4 20.Qe1 Bd5–+) 19...Bh6 20.Ne4 (20.Re4 de4 21.d5 Be3 22.Kh1 Bf5–+) 20...Bf4 21.Nd6 (21.Nf6 Kd8 22.Bc1 Bc1 23.Qc1 a6–+) 21...Kd8 22.Qd3 a6 23.Rf1 Bh2 24.Kh2–/+ Qh4 25.Kg1 g3 Do you see the# threat? 26.Rf7 Qh2 27.Kf1 Qh1 28.Ke2 Qg2 29.Kd1 Qh1 30.Kd2 (30.Kd2 Qh2 31.Kc3 Bf7 32.Qf5–/+). Ziolkowski,T (1800) – Dominiak,W, corr, 1996.

4.Ne5 d6 5.Ng4 Bg4 6.f3 Be6 7.e4 Bg7 8.Bc4 Bc4 9.d3 Be6 10.Nd2 Nc6 11.b5 Na5 12.0–0 Qd7 13.a4 0–0–0 14.c4 Rhg8 15.Qe1 Nh5 16.f4 Bb2 17.Rb1 Bc3 18.Qe2 Bh3 19.g3 Bf1 20.Rf1 Bd2 21.Qd2 Nb3 22.Qc3 Ng3 23.h3 Qh3 0–1. Adjailton (1655) – Fernando12 (1615), lichess.org, 2018.

3.Nf3 Bg7

4.Ng5 0–0 5.e3 Nc6 (5...d5 6.c4+=) 6.b5 Na5 7.c4 (7.Bf6 ef6 8.Nf3 f5+–) 7...e5 (7...h6 8.Nf3+–) 8.Nf3 (8.Be5 Re8 9.Bc3 c5+–) 8...Qe7? (8...e4 9.Nd4 d6 10.d3+–) 9.a4 (better 9.Be5 a6 10.d4+–) 9...Qb4?? (better 9...d6+–) 10.Ba3 (10.Bc3!? Qb3 11.Ba5 Qd1 12.Kd1 e4+–) 10...Qb3 11.Bf8 Qb2?? (11...Qd1 12.Kd1 Kf8 13.d4+– (13.Ne5?! Ne4 14.Ke2 d6+=)) 12.Nc3 (better 12.Bg7 Kg7 13.Nc3 d6+–) 12...Bf8 (12...Kf8 13.Ne5 Qb4 14.Qb1 Qb1 15.Rb1+– (15.Nb1?! Ng4 16.d4 Ne5 17.de5 Be5+–)) 13.Ne5 Bb4 (13...d6 14.Nd3 Qb3 15.Nf4+–) 14.Nd3 Bc3 (14...Qb3 15.Nb4 Qb4+–) 15.Nb2 (15.dc3?! Qc3 16.Ke2 Nc4+–) 15...Bb2 16.Rb1 Be5 (16...Ba3 17.Qf3 Be7 18.Qg3 Kf8 19.Qc7+–) 17.d4 Bd6 18.Bd3 (better 18.Qf3 Be7 19.Qg3 Kf8 20.Qc7 b6+–) 18...Kh8 (18...Be7 19.g4 d6 20.Qf3+–) 19.0–0 (better 19.e4 Be7 20.e5 Ng8+–) 19...b6 (19...Be7 20.e4 d5 21.cd5+–) 20.Qc2 (better 20.Qf3 Kg7 21.Qa8 Bb7 22.Qa7 Be4 23.Be4 Nc4+–) 20...Bb7 21.f3 (21.e4!? Rg8+–) 21...c5 22.d5 Be5 (22...Re8 23.e4 Be5 24.f4 Bd4 25.Kh1+–) 23.f4 Bb8 (23...Bc7 24.e4 Rg8 25.e5+–) 24.e4 (24.Qc3 Kg7 25.Rf3 Bd5 26.Rg3 Kf8 27.Qf6 Bf4 28.ef4 Nc4 29.Bh7 Bg2 30.Rg8) 24...d6 (24...Bc7 25.e5 Ne8 26.Qe2+–) 25.Rbe1 White prepares e5 (25.Qc3 Kg7 26.Rf3 Bc7 27.Rg3 Kf8 28.Qf6 Bd8 29.Qh6 Ke7 30.Rg7 Ba6 31.Qe6 Kf8 32.Qf7) 25...Bc7 (25...Nd7 26.Qf2 Nf8 27.Qh4+–) 26.e5 de5 (26...Ng8+–) 27.fe5 Be5 28.Re5 Rg8 29.Re7 (29.Qf2 Ng4 30.Qf7 Nf6 31.Qf6 Rg7 32.Re8) 29...Rg7 30.Rf6 Bc8 (30...Rg5 31.Rff7 Kg8 32.Bh7 Kh8 33.Qc3 Rg7 34.Qg7) 31.Rff7 (31.Rff7 Rf7 32.Rf7 Nb3 33.Qe2 Bd7 34.Qe5 Kg8 35.Qg7; 31.Re8 Rg8 32.Qc3 Re8 33.Re6 f6 34.Qf6 Kg8 35.Re8) 1–0. Abdullaevich (1865) – misha3333333333, lichess.org, 2019.

4.Ng5+= Rg8 5.Nf3 e6 6.g3 Ng4 (6...d6 7.Bg2+=) 7.Bg7+/– Rg7 8.Bg2 Qf6 9.c3 Nc6 10.a3 Nce5 11.0–0 (11.d4!? Nf3 12.Bf3+/–) 11...Nf3 12.ef3 Ne5 13.f4 Nd3 14.Qc2 (better is 14.Qf3 Qf5 15.c4+/–) 14...Nf4? (better is 14...Qg6+=) 15.gf4+– Qf4 16.f3 d5 17.d4 e5 18.de5 Qe5? (18...Bh3 19.Rf2+=) 19.Nd2 (better is 19.f4 Qe4 20.Qe4 de4 21.f5+–) 19...d4?? (better is 19...Bh3 20.Rf2 0–0–0+/–) 20.Rae1 Rg5 21.Re5 Re5 22.cd4 Re2 23.h3 Be6 24.Qc7 Rc8 25.Qb7 Rc2 26.f4 Rcd2 27.f5 Bc4 28.Qc8 Ke7 29.f6 Kd6 30.Qc6# (30.Qc4?? Rg2 31.Kh1 Rh2 32.Kg1 Rdg2#) 1–0. rryy44 – zd1953, kurnik, 2012.

4.Ng5+= Rg8 5.Nf3 Nh5 6.c3 e6 7.a4 a5 8.b5 c6 9.e3 cb5 10.ab5 b6 11.Nd4 d5?? (better is 11...Nf6+/–) 12.Qh5+– Bd4 13.ed4 Qf6 (13...Rg7 14.Ba3+–) 14.Qh3 (14.Qh7!? Rh8 15.Qd3 Rh4+–) 14...Rg7 15.Be2 h6 16.Bf3 Bd7 17.0–0 (17.c4 Rg6 18.d3 a4+–) 17...e5 18.de5 Bh3 (18...Qf4 19.Qh5 Rg5+–) 19.ef6 Rg6 20.Bd5 Be6 (20...Ra7 21.Re1 Kd8+–) 21.Ba8 Nd7 22.Bc6 Kd8 23.c4! Bc4 24.d3! Bd3 25.Rd1 Ne5 26.Be5 Kc8 27.Rd3 Rg5 28.Bd7 Kb7 29.f4 Rg8 30.Nc3 Ka7 31.Na4 h5 32.Rc1 h4 33.Rc7 Ka8 34.Bc6 Kb8 35.Rb7 Kc8 36.Nb6 1–0. jura1946 – szeryf99, kurnik, 2012.

3.Nf3 h6

4.e3 c6 5.c4 Na6 6.b5 Nc5 7.Bd4 Ne6 8.Bb2 a6 9.a4 b6 10.Nc3 Nh5 11.Ne4 g4 12.Bh8 Neg7 13.Bg7 Bg7 14.Nh4 Qc7 15.Qg4 Nf6 16.Qg7 Nh5 17.Qg8 1–0. axtur777 – Ichiocha, lichess.org, 2019.

4.e3 Nc6 5.Bf6 (5.b5 Na5+=) 5...ef6 6.b5 Ne5 7.Nd4 (7.Be2 d5+=) 7...d6 (7...c5 8.bc6 dc6 9.Be2=) 8.Be2+= f5 9.f4 (better 9.Nb3+=) 9...g4? (better 9...Ng6=) 10.fe5+– de5 11.Nb3 Qd5 (11...Be6 12.0–0+–) 12.0–0 h5 (12...Be6 13.c4 Qd8 14.c5+–) 13.Nc3 (13.c4 Qe6+–) 13...Qd8 (13...Qd6 14.Bd3 e4 15.Bc4+–) 14.d4 (14.Bc4 Be6 15.Qe2 Bb4+–) 14...ed4 (14...h4 15.Bd3 Bb4 16.Qd2+–) 15.Nd4 1–0. GuestTGGC – GuestFVKV, freechess.org, 2018.

4.e3 Bg7 5.Be2 0–0 6.0–0 d5 7.d4+=.

4.e4 d6 5.e5 de5 6.Ne5 Nbd7 7.Ng4 (7.Bc4 Ne5 8.Be5 Bg7+=) 7...e6 (7...Bg7 8.Ne3=) 8.Bb5 c6 9.Be2 (9.Qf3!? Bg7 10.Be2=) 9...Bb4+= 10.a3 Be7 (10...Bd6 11.Nf6 Nf6 12.0–0–/+) 11.Nc3 (11.0–0 h5 12.Nf6 Nf6+=) 11...h5 (11...Ng4 12.Bg4 Nf6 13.Ne4+=) 12.Nf6 Nf6 13.Na4 (13.Ne4 g4+=) 13...Bd7 14.0–0 Qa5 15.c4 0–0–0 16.Bc3 Qf5 (better is 16...Qc7–/+) 17.Bd3?? (17.Qb3 b6 18.Rfb1+–) 17...Qd3–+ 18.Bb4 (18.Qb3 Be8–+) 18...Bb4 19.ab4 Qc4 20.Nc5 Qb4 (20...a6 21.d3 Qc3 22.Rc1 Qb4 23.d4–+) 21.Nd7 Rd7 22.Rb1 Qd2 23.Qa4 a6 24.Rfd1 Qf4 25.Rd7 Qa4 26.Rdb7 Qb5 27.R7b5 ab5 28.Rc1 Kc7 29.g3 Rd8 30.h4 g4 31.Kg2 Rd2 32.Kg1 Ne4 33.f3 gf3 34.Kf1 Ng3 35.Kg1 Rg2 0–1. Nautiluschess – Drale, ICS blitz, 2001.

4.e4 Bg7 5.e5 Nd5 6.a3 d6 7.c4 Nb6 8.d4 de5 9.Ne5 Be5 10.de5 Qd1 11.Kd1 e6? (Better is 11...Na4!? 12.Bc1 Nc6=+) 12.Bd3 Nc6 13.Ke2 (13.Kc2 Na4 14.Be4 Nb2 15.Bc6 bc6 16.Kb2 c5+/–) 13...Bd7 14.Nd2?? 0–0?? 15.Ne4 Rad8 16.Nf6 Kg7 17.Nh5 Kh8 18.f4 Bc8 19.f5?? ef5 20.e6 Nd4–/+ 21.Bd4 Rd4 22.ef7 Rf7 23.Rhe1 Na4 24.Kd2 Bd7 25.Rad1 Nb2 26.Kc3 Rd3 27.Rd3 Nd3 28.Kd3 Bc6 29.g3? Bf3–+ 30.Re8 Kh7 31.g4 Bg4 32.Ng3 f4 33.Ne4 Bf5 34.Kd4 Bg6 35.Nc5 b6 36.Ne6 –+. bashful – henrybird, Live Game Caissa's Web, 2004.

4.h4 g4!? 5.Ne5 d6=.

3.Bf6 ef6

4.a3 a5 5.b5 d5=.

4.a3 d5 5.d4 Bg7 6.e3 f5 7.c3 (7.c4 Be6=) 7...a5 8.Nd2 ab4 9.ab4 Ra1 10.Qa1 b6 (10...0–0 11.Bd3=) 11.Qa4 Bd7 12.Bb5 Bb5 (12...c6!? 13.Bd3 c5=) 13.Qb5+= Qd7 14.Qd7 Nd7 15.Ne2 c5 (15...Ke7!?+=) 16.bc5+/– bc5 17.0–0 (17.Ng3 f4 18.Nf5 Rg8+/–) 17...0–0 18.g3 (18.Nf3!? h6 19.dc5 Nc5 20.Nfd4 Bd4 21.Nd4+=) 18...Ra8 19.Rd1 Ra2 20.Kg2 (20.h4 h6=+) 20...cd4 (20...c4 21.f3=+) 21.ed4 (21.cd4 Nf6=) 21...Nb6 22.Kf3 g4 23.Ke3 Bh6 24.Nf4 (24.f4 gf3 25.Nf4 Na4 26.Nf3 Nc3=+) 24...Bf4 (24...Na4 25.Rc1–/+) 25.gf4 (25.Kf4 Na4 26.Ke5 f4=+) 25...h5 (25...Ra3 26.Rc1–/+) 26.Kd3 (better is 26.Rb1 Na4 27.Rb3=+) 26...Nc4 (26...Na4 27.Rb1 Nb2 28.Ke3 Kg7–/+) 27.Ke2?? (better is 27.Nc4!? dc4 28.Kc4 Rf2 29.Rh1=) 27...Nd2 (better is 27...h4–+) 28.Rd2=+ Rd2 (28...Ra6 29.Rb2=+) 29.Kd2= Kf8 30.Kd3 Ke7 31.c4 dc4 32.Kc4 Kd6 33.d5 h4 34.Kd4 f6 35.Kc4 Kd7 36.Kc5 Kc7 37.d6 Kd7?? (better is 37...Kd8=) 38.Kd5+– Kd8 (38...h3 39.Kc5 Kd8 40.Kc4+–) 39.Ke6 Ke8 40.Kf6 Kd7 41.Kf5 (better is 41.Ke5 h3 42.Kd5 Kd8+–) 41...g3 (41...Kd6 42.Kf6+–) 42.fg3 hg3 43.hg3 Kd6 44.Kf6 Kd7 45.f5 Ke8 46.g4 Kf8 47.g5 Kg8 48.g6 Kf8 49.Ke6 (better is 49.Kg5+–) 49...Kg8 50.f6 Kf8 51.g7 Kg8 52.Ke7 Kh7 53.Kf8 1–0. PoPer – henrigrob, Live Game Caissa's Web, 2004.

4.a3 f5 5.d4 (5.e3 d5=) 5...Bg7 (5...f4 6.g3=) 6.e3 a5 (6...d5 7.c4=) 7.Nd2 (7.b5 d6+=) 7...ab4 (7...f4 8.c3=) 8.ab4+= Ra1 9.Qa1 Nc6 (9...0–0+=) 10.Nh3 (10.b5 Ne7+=) 10...Nb4 (10...Qe7 11.c3 f4 12.e4=+) 11.Qb1 (11.Qa5 Nc2 12.Kd1 b6 13.Qf5 Nb4 14.Ng5 Qf6=) 11...Nd5 (11...Nc6!?=) 12.c4+= Nb6 (12...g4 13.cd5 gh3 14.g3+– (worse 14.gh3 Qe7=)) 13.Qf5 (better 13.c5!? Nd5 14.Qf5+–) 13...h6+= 14.Qb1 (14.Qe4 Qe7+=) 14...d6= 15.Ng1 (15.Bd3=) 15...Bd7 (15...c5 16.dc5 dc5 17.Qb5 Nd7 18.Bd3=) 16.Bd3 (16.Qe4 Qe7 17.Qb7 Bd4 18.Qc7 0–0+=) 16...0–0 (16...c5 17.Ne2+=) 17.Ne2 f5 18.0–0 Nc8? (18...Be6 19.Ng3 Qc8 20.f4+=) 19.f4 (better 19.Qb7!? Ne7 20.Ra1+–) 19...b6 (19...Qe7 20.Rf3 g4 21.Rg3=) 20.Ng3 (20.Qe1 Re8 21.Qf2 Qe7+=) 20...Ne7 (20...Qe7!? 21.Qe1 g4+=) 21.fg5+– hg5 (21...Qe8 22.gh6 Bh6 23.Rf3+=) 22.Nf5+– (22.Bf5?! Nf5 23.Nf5 Qe8 24.Ng7 Qe3 25.Kh1 Qd2=) 22...Nf5 23.Bf5 (23.Rf5?! Bf5 24.Bf5 Qf6=) 23...Bf5 24.Rf5 Qe7 (24...Re8 25.Qd3+–) 25.Rf8 (25.Qe4 Qe4 26.Rf8 Bf8 27.Ne4 Be7+–) 25...Kf8 (25...Qf8 26.Qe4 Qf7 27.Qg4+–) 26.Qe4 (26.Qf5 Bf6 27.Ne4 Kg7+–) 26...Qf7 (26...Kf7 27.Kf2+–) 27.Qf3 (27.Qa8 Ke7+–) 27...Kg8 (27...Ke8 28.Qg4 Bf6 29.Ne4+–) 28.Qf7 (28.Qg4 Qe7 29.Kf2 Kh7+–) 28...Kf7 29.Kf2 Bf6 (29...Kg6 30.Kf3+–) 30.Kf3 (30.Ne4 Be7+–) 30...Ke6 31.Kg4 (31.Ne4 Bd8+–) 31...d5 32.cd5 Kd5 33.Nf3 (33.Kf5 Be7 34.Nf3 b5+–) 33...Bd8 (33...Ke4 34.Ng5 Bg5 35.Kg5+=) 34.Ng5 (better 34.Kf5 b5 35.g3+–) 34...Kc4?? (better 34...Bg5 35.Kg5 b5+–) 35.Kf3 (better 35.Ne6 Be7 36.Nc7 Bd6+–) 35...b5?? (better 35...Bg5 36.g3 Kd3–+) 36.Ne4 (36.Ne6 b4 37.Ke2 Kc3+–) 36...b4 37.g4 (37.Ke2 b3 38.Kd2 Be7+–) 37...b3 38.Nd2 Kc3 39.Nb3 Kb3 40.Kf4 Kc4 41.g5 Kd5 42.Kf5 Kd6 43.g6 Ke7 44.h4 Kf8 45.h5 Kg7 46.e4 Be7 (46...c6 47.d5 c5 48.e5+–) 47.e5 Bd8 (47...c5 48.d5 Bh4+–) 48.Ke6 Be7 (48...Bg5 49.Kd7 Be3+–) 49.Kd7 (better 49.Ke7 Kh6+–) 49...Bd6 (49...c5 50.d5 c4 51.Ke7 c3+–) 50.ed6 cd6 51.Kd6 Kf6 52.d5 Kg7 (52...Kg5 53.g7 Kf4 54.h6 Kg3 55.g8Q Kf3 56.h7 Ke2 57.h8Q Kd3 58.Qg3 Kc4 59.Qhc3 Kb5 60.Qc6 Kb4 61.Qgc3) 53.Kc6 (53.Ke6 Kh6 54.Kf5 Kg7 55.d6 Kf8 56.Ke6 Kg7 57.d7 Kh6 58.Kf5 Kg7 59.Kg5 Kg8 60.d8Q Kg7 61.h6) 53...Kf6 54.d6 Kg7 (54...Ke5 55.d7 Kd4 56.d8Q Kc3 57.g7 Kb2 58.Qd2 Ka3 59.g8Q Ka4 60.Qga2) 55.d7 Kh6 (55...Kf6 56.d8Q Kg7 57.Qg5 Kf8 58.Qf6 Kg8 59.Qf7 Kh8 60.Qf8) 56.d8Q (56.d8Q Kg7 57.Qg5 Kf8 58.Qf6 Kg8 59.Qf7 Kh8 60.Qf8) 1–0. FeegLood (2760) – HenryGrob (2490), Time forfeit, 2016.

4.a3 g4 5.c4 h5 (5...a5 6.b5=) 6.Nc3 h4 (6...a5 7.b5+=) 7.e3 a5 (7...d6 8.h3 f5 9.d4+=) 8.b5 c6 (8...d6!?+=) 9.Qg4+– d5 10.Qd4 Be6 (10...dc4 11.Qd8 Kd8 12.Bc4+–) 11.cd5+– cd5 12.Nge2 (better 12.Nf3!?+–) 12...Nd7 13.Nf4 Bc5 14.Qd3 Qe7? (better 14...Ne5!? 15.Qb1 d4+–) 15.Ncd5+– Qf8?? (15...Qd6+–) 16.Nc7 (16.Nc7 Ke7 17.Nce6+–) 1–0. FeegLood (2750) – Seppo (2395), lichess.org, 2015.

4.a3 Bg7 5.e3 0–0 6.d4 d6 7.Be2 h6 8.Bh5 Re8 9.Ne2 f5 10.0–0 c5 11.bc5 dc5 12.c3 cd4 13.ed4 Qe7 14.Ng3 Nc6 15.Qd3 Qf6 16.Nf5 Bf5 17.Qf3 Re7 18.Nd2 Rae8 19.h3 b6 20.Nc4 Be6 21.Ne5 Qf3 22.Nf3 Bd5 23.Ne5 Ne5 24.de5 Re5 25.Bg4 Bc4 26.Rfd1 b5 27.Bd7 R8e7 28.Bc6 a5 29.a4 ba4 30.Ba4 Bf6 31.Rd8 Kg7 32.Rd6 Re1 33.Re1 Re1 34.Kh2 Be5 35.g3 Bd6 36.Kg2 f5 37.Bc6 Bf1 38.Kf3 g4 39.hg4 Be2 40.Kg2 Bg4 41.Bd5 h5 42.c4 Kf6 43.Bf3 Bf3 44.Kf3 a4 45.Kg2 a3 46.f4 a2 47.Kf2 Re4 48.Kf3 Rc4 49.Kg2 Rf4 50.gf4 Bf4 51.Kf3 Ke5 52.Ke2 a1Q 53.Kd3 Qd4 0–1. tuulevalja – milanio, kurnik, 2014.

4.b5 d5 5.Nf3 =+.

4.b5 Bg7 5.e3 f5 6.c3 (6.d4 c5=) 6...h6 7.d4 Qe7 8.Bd3 c6 9.a4 cb5 10.ab5 a6 11.c4?? ab5?? 12.Ra8+– 0–0 13.cb5 Qd6 14.Ne2 Qb4 15.Nd2 Qd6 16.0–0 b6 17.Nc4 Qc7 18.e4 f4 19.d5 Bb7 20.d6 Qc8 21.Nb6 Qe8 22.Ra7 Be4 23.Be4 Qe4 24.Nc3 Bc3 25.Nd7 Nd7 26.Rd7 Re8 27.h3 Bb4 28.Rc7 f3 29.g3 Qe6 30.d7 Rd8 31.Rc8 Rc8 32.dc8Q Qc8 33.Qb1?? Bc5 34.b6?? Qh3–+ (35.Qg6 fg6 36.Rb1 Qg2#) 0–1. umji5 – DOORMAN, Live Game Caissa's Web, 2004.

4.b5 Bg7 5.e3 h6 6.c3 a6 7.d4 ab5 8.Bb5 c6 9.Be2 d5 10.Nf3 Bg4 11.Nbd2 Nd7 12.0–0 Nb6 13.h3 Bf3 14.Bf3 (14.gf3?! Qd7 15.Qb3 Nc8=) 14...Nc4 (14...f5!?+/–) 15.Nc4 dc4 16.a4 0–0 17.Qb1 (better is 17.Qe2+–) 17...b5? (better is 17...Qe7!?+/–) 18.ab5 (better is 18.Bc6 Ra4 19.Qb5 (19.Ra4?! ba4 20.Qb4 a3+–) 19...Ra1 20.Ra1+–) 18...cb5?? (18...Ra1 19.Qa1 cb5+–) 19.Ra8 Qb6 20.Rf8 Bf8 21.Qa2 Bd6 22.Rb1 Bb8 23.Qc4! Qd6 24.Qb4 Qh2 25.Kf1 Qh1 26.Ke2 Qh2 27.Qb5 Kg7 28.Qb8 Qb8 29.Rb8 f5 30.Re8 Kg6 31.Re5 f6 32.Re6 Kf7 33.d5 Kg6 34.g3 f4 35.ef4 h5 36.fg5 Kg5 37.c4 f5 38.c5 f4 39.c6 fg3 40.fg3 h4 41.Kf2 hg3 42.Kg3 Kf5 43.c7 (43.c7 Kg5 44.h4 Kf5 45.Be4; 43.Bg4 Kg5 44.h4) 1–0. joaquimbage – milanio, kurnik, 2013.

4.b5 Bg7 5.e4 0–0 6.Nc3 d6 (6...f5 7.f3=+) 7.Nf3 (7.Qh5 f5 8.h4 h6=) 7...Bh6 (7...f5!? 8.ef5 Re8 9.Be2 g4–/+) 8.h3 (8.Nd4 c5 9.bc6 Nc6 10.Nc6 bc6+=) 8...Kg7 (8...f5 9.ef5 Re8 10.Be2 Bf5 11.0–0=) 9.Bc4 Be6 (9...f5 10.d3=) 10.Nd5 (10.Be6!? fe6 11.h4+–) 10...Bd5 11.Bd5 a5?? (11...c6 12.bc6 bc6 13.Bc4+=) 12.a4?? (12.Bb7 Ra7 13.Bd5 f5+–) 12...Ra7?? (12...c6 13.Bc4 f5 14.ef5 Re8 15.Be2+=) 13.c4?? (better 13.Nd4 c6 14.bc6 bc6 15.Bc6+– (15.Nc6?! Nc6 16.Bc6 f5+–)) 13...c6+= 14.bc6 (better 14.Nd4 cd5 15.Qh5+=) 14...Nc6?? (better 14...bc6 15.Nd4 cd5=) 15.Bc6+– bc6 16.0–0 Rd7 17.Re1 c5 18.Rb1 Qc7 (18...Re8 19.Nh2 Kg8 20.Ng4+–) 19.d4 Rfd8 20.d5 Qa7 21.Kh2 (21.Nh2 Kh8+–) 21...Kg6 (21...Re7 22.Nd2+–) 22.h4 g4? (22...g4 23.Nd4! g3 24.Kg3 Bf4 25.Kf4 cd4 26.Qg4 Kh6+–; better 22...Re8!?+–). arpinee – WarlpiriMan, ChessWorld.net, 2014.

4.c3 a5 5.b5 d5 6.h4 (6.Nf3 Nd7 7.e3 Bd6 8.h4 g4 9.Nd4 Ne5 10.Be2 f5; 6.e3 Nd7 7.Nf3 Bd6 8.c4 Nb6 9.cd5 Nd5 10.Nc3 Nc3; 6.g3 Be7 7.Nf3 0–0 8.Bg2 Qd6 9.0–0 Nd7 10.d3 Ne5; 6.Qc2 Be6 7.Nf3 Nd7 8.Nd4 Bd6 9.e3 Ne5 10.Ne6 fe6) 6...Nd7 7.d4 g4 8.Nd2 Nb6 9.Qc2 Bd6 10.e3 f5.

4.c3 Nc6 A) 5.e3 A1) 5...Be7 6.Qc2 (6.Nf3 a5 7.b5 Ne5 8.h4 g4 9.Ne5 fe5 10.Qg4 d5; 6.b5 Ne5 7.d4 Ng6 8.Nd2 d5 9.Bd3 Be6 10.Ne2 0–0; 6.h4 d6 7.Nf3 Bf5 8.Nd4 Be4 9.Qg4 d5 10.Nc6 bc6) 6...Ne5 7.d4 Ng6 8.Nd2 0–0 9.Bd3 d5 10.h4 gh4; A2) 5...Bg7 6.Nf3 (6.Na3 0–0 7.h4 d5 8.hg5 fg5 9.Bd3 h6 10.Nf3 Bg4; 6.h4 d5 7.Nf3 Bd7 8.Qb3 Be6 9.Bb5 0–0 10.Bc6 bc6; 6.b5 Ne5 7.d4 Ng6 8.Nd2 0–0 9.Bd3 Re8 10.Ne2 d5; 6.Qh5 d5 7.Nf3 a5 8.b5 Ne5 9.Ne5 fe5 10.h4 h6) 6...d5 7.Nd4 Qd6 8.Bb5 0–0 9.Bc6 bc6 10.Na3 a5; A3) 5...d5 6.Nf3 (6.b5 Ne5 7.d4 Ng6 8.Nd2 Bd6 9.c4 Be6 10.Qb3 c6) 6...Bd6 7.Bd3 a5 8.b5 Ne5 9.Ne5 fe5 10.c4 Be6; B) 5.b5 B1) 5...Ne7 6.Nf3 (6.e3 d5 7.Nf3 c5 8.bc6 Nc6 9.Qb3 Be7 10.Na3 0–0; 6.h4 Nf5 7.hg5 fg5 8.e4 Qe7 9.Qe2 Nh4 10.g3 Ng6) 6...d5 7.e3 c5 8.Bd3 Ng6 9.0–0 Bd6 10.c4 g4; B2) 5...Ne5 6.e3 (6.d4 Ng6 7.e3 d5 8.Nd2 Be6 9.Bd3 Bd6 10.Ne2 0–0) 6...Be7 7.d4 Ng6 8.Nd2 0–0 9.Bd3 d5 10.h3 b6.

4.c3 d5 5.d4 a5 6.b5 c5 7.bc6 Nc6 8.e3 h5 9.h4 g4 10.Bd3 f5 11.g3 Bd6 12.Qc2 Qf6 13.Ne2 b6 (13...Be6 14.Nd2+=) 14.a4 (14.Qb3 Qe6+=) 14...Ne7 15.Na3 Ba3 16.Ra3 Ba6 17.Rb3 Bd3 18.Qd3 0–0 (18...Rc8!?+=) 19.Nf4+/– Qc6 20.Nh5 Qa4 21.Qb1 (better is 21.Rb6 Rfb8 22.Rb8 Rb8 23.0–0+/–) 21...Nc6?? (21...Rfc8!?+=) 22.0–0 (22.Nf6!? Kg7 23.Nd5 Ra6 24.Nb6 Rb6 25.Rb6 Ne7+–) 22...Rab8? (better is 22...Ne7+/–) 23.Nf6+– Kg7 24.Nd5 1–0. orangutandu – kpivaradluxo, kurnik, 2012.

4.c3 d5 5.e3 A) 5...c5 6.bc5 (6.Bd3 cb4 7.cb4 Nc6 8.a3 a5 9.ba5 Ra5 10.Nf3 g4; 6.Bb5 Nc6 7.Ne2 Qb6 8.Qa4 a6 9.Na3 Bd7 10.Bc6 Qc6; 6.Nf3 g4 7.Nh4 f5 8.g3 cb4 9.a3 Nc6 10.ab4 Be7; 6.b5 Nd7 7.h4 Bd6 8.Qf3 Nb6 9.hg5 fg5 10.Qh5 Bf5) 6...Bc5 7.h4 Nc6 8.hg5 fg5 9.Nf3 Bf5 10.Nd4 Bg6; B) 5...Bd6 6.Nf3 (6.Bd3 a5 7.b5 Nd7 8.Nf3 Qe7 9.0–0 Nc5 10.Qc2 Bg4; 6.h4 Nc6 7.Nf3 Bd7 8.Bb5 g4 9.Bc6 bc6 10.Nd4 a5; 6.Qb3 Be6 7.Nf3 Nc6 8.Bb5 0–0 9.Bc6 bc6 10.Nd4 Bd7) 6...Nc6 7.Bb5 0–0 8.h4 g4 9.Bc6 bc6 10.Nd4 Bd7; C) 5...a5 6.b5 (6.Qa4 Bd7 7.b5 Na6 8.d4 c5 9.Nf3 c4 10.Nbd2 Bd6) 6...Be6 7.h4 Nd7 8.Nf3 Nc5 9.Nd4 Qd6 10.Qc2 0–0–0; D) 5...Nc6 6.b5 (6.Nf3 Bd6 7.Bb5 0–0 8.h4 g4 9.Bc6 bc6 10.Nd4 Bd7) 6...Ne5 7.d4 Ng6 8.Nd2 Bg7 9.Bd3 0–0 10.Ne2 Qd6.

4.c3 d5 5.Nf3 A) 5...c5 6.e3 (6.Qc2 g4 7.Nh4 Be6 8.bc5 Bc5 9.d4 Bd6 10.h3 gh3; 6.bc5 Bc5 7.e3 Nc6 8.Bd3 0–0 9.Qc2 h5 10.h4 g4; 6.g3 g4 7.Nh4 Nc6 8.Bg2 Be6 9.b5 Ne5 10.Qa4 c4; 6.b5 Nd7 7.d4 Bd6 8.Nbd2 0–0 9.e3 f5 10.Bd3 g4) 6...g4 7.Nh4 Nc6 8.b5 Ne5 9.d4 Ng6 10.Ng6 hg6; B) 5...a5 6.b5 Be7 7.e3 Nd7 8.c4 Nb6 9.cd5 Nd5 10.Nc3 Nc3; C) 5...Nc6 6.e3 (6.Na3 a5 7.Qa4 Bd7 8.b5 Ne5 9.Nc2 Bc5 10.d4 Nf3) 6...Bd6 7.Bb5 0–0 8.h4 g4 9.Bc6 bc6 10.Nd4 Bd7.

4.c3 d6 5.e3 Bd7 6.d4 Bg7 7.Nd2 0–0 8.Bd3 c5 (8...Re8 9.Qh5 h6 10.Ne2+/–) 9.a3 (9.Qb1 h6+/–) 9...cd4 10.cd4 b6 (10...a5 11.b5+/–) 11.Ne2 (11.Qc2 f5 12.Bf5 Bf5 13.Qf5 Re8+–) 11...Bc6 12.0–0 h5? (12...a6 13.Ng3+–) 13.h4! gh4 (13...Qd7!?+–) 14.Nf4 f5 15.Qh5 (15.Nh5?! Qg5 16.Nf4 Bd4+/–) 15...Qf6 16.Rac1 Be4?? (16...Re8+–) 17.Ne4 fe4 18.Be4 Qh6 19.Qh6 (19.Ba8 Qh5 20.Nh5 a5+–) 19...Bh6 20.Ba8 Nd7 (20...Bf4 21.ef4 Kg7 22.Rfe1+–) 21.Bc6 Nf6 22.Nd5 Ng4 (22...Bg5 23.Ne7 Kh7 24.f4+–) 23.Ne7 (better is 23.Bd7!? f5 24.Rc7 a6+–) 23...Kg7 24.Bf3 (24.Nf5 Kf6 25.Nd6 Ke6+–) 24...Nf6 (24...Ne3 25.fe3 Be3 26.Kh2 Bc1 27.Rc1+–) 25.Nf5 Kg6 26.Nh6 (26.Nd6!? Rd8 27.Nc8 Rd7+–) 26...Kh6 27.Rc6 Ne8 28.Kh2 (28.Rc8 Kg7+–) 28...Rg8 29.Kh3 Kg5 30.Rc8 1–0. orangutandu – bani49, kurnik, 2012.

4.c3 Be7 A) 5.e3 A1) 5...Nc6 6.Nf3 (6.h4 d5 7.Nf3 g4 8.Nd4 Ne5 9.Qc2 a5 10.b5 0–0; 6.Qc2 d5 7.Nf3 Bg4 8.Bb5 a5 9.h4 ab4 10.hg5 Bf3) 6...d5 7.h4 g4 8.Nd4 Ne5 9.Qc2 a5 10.b5 0–0; A2) 5...a5 6.b5 d5 7.Nf3 Nd7 8.c4 Nb6 9.cd5 Nd5 10.Nc3 Nc3; A3) 5...d5 6.Qc2 (6.Nf3 Nc6 7.Qc2 0–0 8.Bd3 h5 9.0–0 Bg4 10.Nd4 Nd4; 6.h4 Nc6 7.Nf3 Bg4 8.hg5 fg5 9.Qc2 h5 10.b5 Na5; 6.Bd3 Nc6 7.Qc2 a5 8.b5 Ne5 9.Ne2 Qd6 10.Bh7 Bd7; 6.Qa4 Nc6 7.Nf3 0–0 8.h4 g4 9.Nd4 Ne5 10.f4 gf3) 6...Nc6 7.Nf3 0–0 8.Bd3 h6 9.0–0 a5 10.b5 Ne5; B) 5.h4 B1) 5...g4 6.e3 d5 7.Ne2 a5 8.b5 Nd7 9.d4 Nb6 10.Nf4 f5; B2) 5...Nc6 6.Nf3 (6.b5 Ne5 7.d4 Ng6 8.hg5 fg5 9.Nd2 d5 10.Qc2 g4; 6.e3 d5 7.Nf3 g4 8.Nd4 Ne5 9.Qc2 Bd7 10.Bd3 h5) 6...g4 7.Nd4 a5 8.b5 Ne5 9.e3 d5 10.Qc2 0–0; B3) 5...a6 6.Nf3 (6.hg5 fg5 7.d4 Nc6 8.Nd2 d5 9.Qc2 h5 10.e4 de4; 6.e3 Nc6 7.Nf3 d5 8.Nd4 Qd6 9.Qa4 0–0 10.hg5 fg5; 6.d4 g4 7.e3 f5 8.Bd3 d5 9.Ne2 Bh4 10.Nd2 Nc6; 6.Na3 Nc6 7.hg5 fg5 8.e3 d5 9.Nf3 g4 10.Nd4 Nd4) 6...Nc6 7.e3 d5 8.Bd3 Bg4 9.Qa4 Bd7 10.Qb3 g4; B4) 5...a5 6.b5 (6.hg5 fg5 7.b5 d5 8.Nf3 Nd7 9.Qc2 h5 10.d3 g4) 6...d5 7.e3 Nd7 8.Nf3 g4 9.Nd4 Ne5 10.Qc2 0–0; B5) 5...d5 6.hg5 (6.Nf3 g4 7.Nd4 a5 8.Qa4 Bd7 9.b5 c5 10.Nc2 Na6; 6.e3 a5 7.b5 Nd7 8.Nf3 g4 9.Nd4 Ne5 10.Qc2 0–0) 6...fg5 7.Nf3 g4 8.Nd4 a5 9.e3 ab4 10.cb4 Bb4; C) 5.Na3 C1) 5...d5 6.Nb5 (6.Nf3 Nc6 7.Nc2 a5 8.b5 Ne5 9.Ncd4 0–0 10.e3 g4; 6.Nc2 0–0 7.Nf3 a5 8.b5 Nd7 9.Ncd4 Nc5 10.e3 Bd7; 6.h4 a5 7.Qa4 Bd7 8.b5 Na6 9.Qd4 Nc5 10.Qd5 g4; 6.Qb3 Nc6 7.Nf3 0–0 8.h4 g4 9.Nd4 Nd4 10.cd4 a5) 6...0–0 7.h4 g4 8.e3 Nc6 9.Ne2 a5 10.a3 f5; C2) 5...0–0 6.h4 (6.Nf3 Nc6 7.Nc2 Re8 8.e3 d5 9.Ncd4 Qd6 10.h4 a5; 6.Nb5 a5 7.a3 d5 8.Nd4 Re8 9.e3 Bd6 10.Bd3 Nc6; 6.Nc2 a5 7.b5 d5 8.e3 Nd7 9.Nd4 Nc5 10.Ngf3 Bd7; 6.e3 a5 7.Bd3 d5 8.h4 g4 9.Nb5 ab4 10.Qc2 Nc6) 6...Nc6 7.hg5 fg5 8.e4 Kg7 9.Qh5 Rh8 10.Bc4 Qe8; C3) 5...Nc6 6.Nf3 (6.Nc2 0–0 7.Nf3 d5 8.Ncd4 Re8 9.Nc6 bc6 10.e3 c5; 6.h4 g4 7.e3 a5 8.Qa4 d5 9.b5 Ne5 10.d4 Nd7) 6...a5 7.Qa4 g4 8.Nd4 Nd4 9.cd4 0–0 10.h3 d5; D) 5.Qc2 D1) 5...a5 6.b5 d5 7.h4 g4 8.e3 Nd7 9.Ne2 0–0 10.Ng3 Nc5; D2) 5...h6 6.Nf3 (6.e3 0–0 7.Nf3 Nc6 8.Be2 d5 9.0–0 Qd7 10.Na3 g4; 6.d4 0–0 7.Nd2 d5 8.h4 g4 9.e3 a5 10.b5 f5) 6...Nc6 7.e3 0–0 8.Be2 d5 9.0–0 a5 10.b5 Ne5; D3) 5...Nc6 6.e3 (6.Nf3 0–0 7.e3 a5 8.b5 Ne5 9.h4 g4 10.Ne5 fe5; 6.b5 Ne5 7.d4 Ng6 8.c4 a6 9.Nc3 ab5 10.cb5 0–0; 6.h4 g4 7.e3 d5 8.b5 Ne5 9.d4 Nc4 10.Ne2 Bd6) 6...d5 7.Nf3 0–0 8.Bd3 h6 9.0–0 a5 10.b5 Ne5; D4) 5...0–0 6.h4 (6.e3 Nc6 7.h4 gh4 8.Bd3 d5 9.Nf3 Kg7 10.Rh4 Rh8; 6.Nf3 Nc6 7.e3 d5 8.Bd3 h6 9.0–0 a5 10.b5 Ne5) 6...g4 7.e3 h6 8.Ne2 d5 9.Nd4 a5 10.b5 Nd7; D5) 5...d5 6.e3 (6.Nf3 a5 7.b5 Nd7 8.e3 Ne5 9.h4 Nf3 10.gf3 h5; 6.h4 g4 7.e3 a5 8.b5 Nd7 9.Ne2 Nc5 10.Nd4 g3) 6...Nc6 7.Nf3 0–0 8.Bd3 h6 9.0–0 a5 10.b5 Ne5; E) 5.Nf3 E1) 5...d5 6.h4 (6.e3 Nc6 7.Bb5 0–0 8.Bc6 bc6 9.h4 g4 10.Nd4 c5) 6...g4 7.Nd4 a5 8.Qa4 Bd7 9.b5 c5 10.Nc2 Na6; E2) 5...0–0 6.h4 (6.e3 Nc6 7.h4 g4 8.Nd4 d5 9.Nc6 bc6 10.Bd3 f5) 6...g4 7.Nd4 Nc6 8.e3 d5 9.Nc6 bc6 10.Bd3 f5; E3) 5...Nc6 6.e3 (6.b5 Ne5 7.Ne5 fe5 8.c4 a6 9.Nc3 ab5 10.cb5 d5; 6.h4 g4 7.Nd4 a5 8.b5 Ne5 9.e3 d5 10.Qc2 Qd6; 6.Na3 d5 7.e3 0–0 8.Nb5 a5 9.a3 Bf5 10.Nfd4 Bg6; 6.Qc2 d5 7.e3 Bd7 8.d4 g4 9.Nh4 a5 10.b5 Na7) 6...d5 7.Bb5 a5 8.h4 ab4 9.cb4 Bb4 10.Qb3 Be7; E4) 5...d6 6.Na3 (6.e3 Nc6 7.b5 Ne5 8.d4 g4 9.Nfd2 Ng6 10.Be2 f5; 6.h4 g4 7.Nd4 c5 8.bc5 dc5 9.Nb3 Nc6 10.Na3 Bf5; 6.e4 0–0 7.Bc4 f5 8.Qc2 Nc6 9.b5 fe4 10.Qe4 Bf6) 6...0–0 7.Nb5 a5 8.a3 g4 9.Nh4 f5 10.g3 Nc6; E5) 5...a5 6.b5 d5 7.e3 Nd7 8.c4 Nb6 9.cd5 Nd5 10.Nc3 Nc3.

4.c3 Bg7 5.d4+= 0–0 6.g3 (6.e3 a5+=) 6...d6 7.Bg2 Bf5?? (better is 7...Re8=) 8.Bb7+– Nd7 9.Ba8 Qa8 10.Nf3 (better is 10.f3+–) 10...g4+= 11.0–0 (11.Nbd2 gf3 12.Nf3 Re8+=) 11...gf3= 12.ef3 Bg6 (12...Re8 13.Kg2=) 13.Nd2 Bh5 (13...f5 14.f4+=) 14.Ne4 (14.Re1!?+=) 14...f5= 15.Ng5 h6 16.Nh3 (16.g4!?+=) 16...Bf3–/+ 17.Qd3 Be4 18.Qe3 (18.Qb5 Bg2 19.Nf4 Bf1 20.Qd7–/+) 18...Nf6 (18...Bg2 19.Nf4 Bf1 20.Rf1–+) 19.a4? (better is 19.f3!? Bd5 20.Nf4+=) 19...Ng4 (better is 19...Nd5 20.Qd2 Bg2–+) 20.Qf4? (better is 20.Qd2 Bg2 21.Nf4 Bf1 22.Rf1–/+) 20...Nf6 (better is 20...Bg2 21.f3 Bh3–+) 21.a5 (21.Qe3!?=) 21...Nh5 (21...Nd5!? 22.Qd2 Bg2–+) 22.Qh4+= Nf6 23.Nf4 Re8 24.Nh5 Nh5–/+ 25.Qh5 c5 26.bc5 dc5 27.dc5 Qc6 28.Rac1 Qc5 29.a6 Bd3 30.Rfd1 Ba6 31.c4 Bb7 32.Kf1 Qc6 33.f3 Qf3 34.Qf3 Bf3 35.Rd4?? Bd4 36.c5 Rc8 37.c6 Rc6 38.Rc6 Bc6 39.Ke2 a5 40.Kd3 Bg7 41.Kc4 a4 42.Kb4 Bd7 43.h3 Kh7 44.h4 Kg6 45.Ka3 h5 46.Kb4 Be5 47.Ka3 Bg3 (47...Bg3 48.Kb2 f4 49.Kc3 f3 50.Kd3 f2 51.Ke2 Bb5 52.Kd2 Bf4 53.Kc2 f1Q 54.Kc3 Qc4 55.Kb2 Qb3 56.Ka1 Be5) 0–1. joaquimbage – jerzyslowik, playok.com, 2012.

4.c3 Bg7 5.e3 A) 5...d5 6.Nf3 (6.Qc2 Nc6 7.Nf3 Bd7 8.h4 a6 9.Be2 Qe7 10.Nd4 0–0–0; 6.Bb5 Bd7 7.Bd7 Qd7 8.Nf3 Nc6 9.Na3 0–0 10.0–0 a5; 6.Ne2 0–0 7.Nd4 Nd7 8.h4 Ne5 9.Qc2 h6 10.Bd3 a5) 6...Nc6 7.Nd4 0–0 8.Nc6 bc6 9.Bd3 a5 10.Qa4 Bd7; B) 5...a5 6.Nf3 (6.Qa4 0–0 7.h4 Nc6 8.Nf3 g4 9.Nd4 Re8 10.Be2 Qe7; 6.b5 d5 7.Nf3 Nd7 8.Qc2 Ne5 9.h4 g4 10.Nd4 Qd6) 6...Nc6 7.b5 Ne5 8.d4 Ng6 9.h3 0–0 10.Bd3 d5; C) 5...Nc6 6.Nf3 (6.Na3 0–0 7.h4 d5 8.hg5 fg5 9.Bd3 h6 10.Nf3 Bg4; 6.b5 Ne5 7.d4 Ng6 8.Nd2 d5 9.Bd3 0–0 10.Ne2 Qd6) 6...d5 7.Bb5 0–0 8.Bc6 bc6 9.Na3 Bd7 10.0–0 a5.

4.c3 Bg7 5.Nf3 A) 5...d5 6.Na3 (6.e3 Nc6 7.Na3 a5 8.b5 Ne5 9.h4 Qe7 10.Ne5 fe5; 6.Qc2 Nc6 7.e3 a5 8.b5 Ne5 9.h4 h5 10.c4 Nf3; 6.Nd4 0–0 7.e3 Nd7 8.Qc2 Ne5 9.h4 h6 10.Bd3 a5; 6.h4 Nc6 7.Na3 0–0 8.hg5 fg5 9.Qb1 f5 10.Nb5 a5) 6...Nc6 7.e3 a5 8.b5 Ne5 9.Nc2 0–0 10.Be2 Bf5; B) 5...0–0 6.e3 (6.Qc2 Nc6 7.e3 f5 8.Qf5 d5 9.Qg5 Qg5 10.Ng5 Nb4) 6...Nc6 7.h4 g4 8.Nd4 a5 9.Nf5 d5 10.Qg4 Bf5; C) 5...a5 6.e3 (6.b5 d5 7.Qc2 Nd7 8.e3 Ne5 9.h4 g4 10.Nd4 Qd6; 6.Qc2 ab4 7.cb4 f5 8.Nc3 g4 9.Ng1 Nc6 10.Qf5 Nb4) 6...d5 7.Qa4 Nc6 8.Nd4 Bd7 9.Nc6 Bc6 10.Bb5 Bd7; D) 5...d6 6.e3 (6.Na3 0–0 7.e3 c5 8.bc5 dc5 9.Qb1 f5 10.h3 Nc6; 6.h4 Nc6 7.Na3 Bf5 8.Qa4 a6 9.Nd4 Be4 10.f3 Bd5; 6.Qc2 Nc6 7.e3 f5 8.Bd3 Nb4 9.Qa4 Nc6 10.Nd4 0–0) 6...a5 7.Bb5 Nd7 8.Qc2 c6 9.Bd3 Ne5 10.b5 d5; E) 5...Nc6 6.e3 d5 7.Bd3 a5 8.ba5 Ra5 9.Qc2 Ne5 10.Bh7 Bd7.

4.c3 h5 5.Qc2 (5.Nf3 A) 5...d5 6.e3 (6.d4 a5 7.b5 Be7 8.Qd3 0–0 9.Nbd2 Be6 10.e3 Qd7; 6.Nd4 a5 7.b5 c5 8.bc6 Nc6 9.e3 Bd6 10.Qb3 Be5; 6.Na3 a5 7.Qa4 Nc6 8.e3 Bd7 9.b5 Ne5 10.Be2 Bd6; 6.Qa4 Qd7 7.b5 Na6 8.d4 g4 9.Nfd2 c5 10.h3 g3) 6...a5 7.b5 Nd7 8.d4 f5 9.c4 Bb4 10.Nfd2 Nf6; B) 5...a5 6.b5 (6.Qa4 Nc6 7.Na3 d5 8.e3 Bg4 9.b5 Ne5 10.Be2 Qd7) 6...d5 7.e3 Nd7 8.c4 dc4 9.Bc4 Nb6 10.Qe2 Nc4; C) 5...g4 6.Nd4 (6.Nh4 d5 7.d4 Bd6 8.Nd2 Be6 9.g3 a5 10.b5 c6) 6...Nc6 7.e3 Nd4 8.cd4 Bb4 9.Qb3 Be7 10.Nc3 c6; D) 5...Nc6 6.e3 (6.d4 g4 7.Nh4 d5 8.Nd2 Be6 9.g3 Qd6 10.e3 0–0–0; 6.Qc2 d5 7.d4 h4 8.h3 Bd6 9.e3 Be6 10.Be2 Qd7) 6...a5 7.b5 Ne5 8.c4 Bc5 9.d4 Nf3 10.Qf3 Qe7; 5.e3 A) 5...d5 6.Nf3 (6.Qa4 Nc6 7.Nf3 Bd7 8.Qb3 Qe7 9.Qd5 0–0–0 10.Qb3 g4; 6.Na3 a5 7.Qa4 Bd7 8.b5 Bf5 9.Nf3 Nd7 10.Nd4 Bg6; 6.h4 Nc6 7.Nf3 a6 8.Bd3 Ne5 9.Qc2 Bg4 10.Be2 Nf3; 6.Bd3 a5 7.b5 Nd7 8.Be2 Ne5 9.d4 Ng6 10.Nd2 Be6) 6...a5 7.b5 Nd7 8.c4 dc4 9.Bc4 g4 10.Nd4 Ne5; B) 5...a5 6.b5 d5 7.Nf3 Nd7 8.c4 dc4 9.Qc2 g4 10.Nd4 Ne5; C) 5...Nc6 6.Nf3 (6.h4 a5 7.b5 Ne5 8.hg5 fg5 9.Rh5 Rh5 10.Qh5 d5; 6.Qc2 a6 7.Nf3 d5 8.d4 Bd6 9.Nbd2 Be6 10.Bd3 Qd7; 6.Na3 a5 7.Qa4 d5 8.Nf3 Bg4 9.b5 Ne5 10.Be2 Qd7; 6.Qa4 a5 7.Na3 d5 8.Nf3 Bd7 9.b5 Ne5 10.Be2 Bd6) 6...Be7 7.Na3 a5 8.Qa4 d5 9.Bb5 Bd7 10.Bc6 bc6; D) 5...Be7 6.h4 (6.Nf3 Nc6 7.Na3 a5 8.Qa4 d5 9.Nd4 Bd7 10.b5 Nd4) 6...g4 7.Ne2 Nc6 8.Nf4 a5 9.b5 Ne5 10.d4 Ng6; E) 5...c5 6.b5 d5 7.h4 g4 8.Ne2 Nd7 9.Nf4 Ne5 10.d4 Ng6; 5.Qb3 A) 5...d6 6.Na3 (6.d4 a5 7.Qa4 Bd7 8.b5 d5 9.Nd2 Bf5 10.Ngf3 Nd7; 6.Nf3 Be6 7.Qb2 Nc6 8.Na3 Qd7 9.e3 0–0–0 10.Nb5 Kb8; 6.e3 Be6 7.Qb2 Nc6 8.Nf3 Ne5 9.Na3 c6 10.Be2 h4) 6...Be6 7.Qa4 Nc6 8.Nf3 Qd7 9.e3 g4 10.b5 Ne5; B) 5...Nc6 6.b5 (6.e3 a5 7.b5 Ne5 8.d4 a4 9.Qc2 Ng4 10.Nf3 d5) 6...Na5 7.Qa4 c6 8.e3 d5 9.Nf3 Bd7 10.Bd3 Bc5; C) 5...a6 6.Na3 (6.Nf3 Nc6 7.Na3 d5 8.Nc2 Bf5 9.Ncd4 Nd4 10.Nd4 Qd7; 6.e3 d5 7.Nf3 Nc6 8.Na3 Bf5 9.Nc2 Qd7 10.Ncd4 Nd4; 6.e4 Nc6 7.Nf3 Qe7 8.Qd5 d6 9.Nd4 Nd4 10.Qd4 c5) 6...Nc6 7.Nf3 d5 8.Nc2 Qd6 9.Ncd4 Bd7 10.e3 0–0–0; D) 5...a5 6.b5 (6.Nf3 Nc6 7.b5 Ne5 8.d4 Nf3 9.gf3 d5 10.Nd2 Bf5) 6...d5 7.Nf3 Be6 8.d4 Nd7 9.Nbd2 Bd6 10.h3 0–0; E) 5...d5 6.Na3 (6.Nf3 a5 7.e3 Nc6 8.Bb5 Qd6 9.Nd4 ab4 10.cb4 Bg7) 6...Nc6 7.Nf3 a5 8.Nc2 Qd6 9.b5 a4 10.Qb2 a3; 5.d4 A) 5...d5 6.Nf3 (6.e3 a5 7.b5 Be6 8.Nd2 Qd6 9.Ngf3 Nd7 10.Bd3 h4; 6.Nd2 a5 7.b5 Bf5 8.Ngf3 Nd7 9.e3 h4 10.h3 Qe7) 6...Nc6 7.Nbd2 Bg7 8.e3 g4 9.Nh4 f5 10.g3 Qg5; B) 5...a5 6.b5 d5 7.e3 c6 8.Nd2 Bf5 9.Ngf3 Nd7 10.c4 Bb4; C) 5...Be7 6.e3 (6.d5 a5 7.b5 d6 8.Nf3 Nd7 9.Nbd2 Nb6 10.c4 f5; 6.Nd2 d5 7.e4 de4 8.Ne4 a5 9.b5 f5 10.Nd2 c5; 6.e4 d5 7.Nd2 a5 8.b5 de4 9.Ne4 f5 10.Nd2 c5) 6...d5 7.Bd3 a5 8.b5 c6 9.Nd2 cb5 10.Bb5 Nc6; D) 5...Bg7 6.e4 (6.e3 d5 7.Bd3 a5 8.b5 Qd6 9.Nd2 Be6 10.Ne2 h4; 6.Na3 d5 7.Nf3 0–0 8.e3 a5 9.Qa4 Bf5 10.Be2 Nd7; 6.Nd2 d5 7.e3 a5 8.b5 Bf5 9.c4 c6 10.cd5 cd5; 6.Nf3 d5 7.Nbd2 0–0 8.e3 a5 9.b5 g4 10.Nh4 f5) 6...Nc6 7.Nd2 d5 8.b5 Na5 9.Bd3 Qe7 10.Ne2 de4; E) 5...Nc6 6.Nf3 (6.Nd2 d5 7.Ngf3 h4 8.b5 Ne7 9.Nb3 Nf5 10.Qd3 Nd6; 6.e3 d5 7.Bd3 Bd6 8.Nd2 Be6 9.Ngf3 g4 10.Nh4 Qd7; 6.b5 Ne7 7.Nd2 d5 8.Qc2 Be6 9.e3 Qd7 10.Ngf3 g4; 6.Qc2 d5 7.Nd2 Bd6 8.Ngf3 0–0 9.e3 h4 10.h3 f5) 6...d5 7.Nbd2 Bd6 8.b5 Ne7 9.Qb3 a5 10.c4 dc4) 5...d5 (5...a5 6.b5 d5 7.c4 dc4 8.e3 Nd7 9.Bc4 Nb6 10.Be2 Nd5; 5...Be7 6.d4 (6.Nf3 d5 7.e3 Nc6 8.Bb5 Bd7 9.Qd3 g4 10.Bc6 bc6; 6.e3 Nc6 7.Nf3 d5 8.Bb5 Bd7 9.Qb3 Ne5 10.Na3 c6; 6.e4 Nc6 7.b5 Ne5 8.d4 Ng6 9.c4 a6 10.Nc3 ab5) 6...Nc6 7.Nd2 d5 8.e3 Qd6 9.Ngf3 Be6 10.Nb3 0–0–0; 5...Nc6 6.b5 (6.Nf3 d5 7.d4 Bd6 8.Nbd2 Be6 9.e3 Qd7 10.Bd3 0–0–0; 6.e4 d5 7.b5 Na5 8.Ne2 de4 9.Qe4 Qe7 10.Qe7 Be7; 6.d4 d5 7.Nd2 h4 8.b5 Na5 9.e4 de4 10.Qe4 Be7; 6.e3 d5 7.b5 Na5 8.Nf3 Bd6 9.Be2 h4 10.Qa4 c5) 6...Ne5 7.d4 Ng6 8.Nd2 d5 9.e3 Bd6 10.Bd3 Qe7) 6.e3 (6.Nf3 Nc6 7.e3 a5 8.b5 Ne5 9.c4 Nf3 10.gf3 Be6; 6.d4 Bd6 7.Nf3 0–0 8.Nbd2 Re8 9.0–0–0 a5 10.b5 c6; 6.d3 Nc6 7.Nd2 d4 8.a3 g4 9.g3 dc3 10.Qc3 a5) 6...h4 (6...a5 7.b5 Nd7 8.c4 dc4 9.Bc4 Ne5 10.Nf3 Nc4) 7.Bd3 (7.Nf3 Nc6 8.Bb5 Bd7 9.Bc6 bc6 10.Nd4 c5) 7...h3 (7...a5 8.b5 Nd7 9.Bf5 Ne5 10.Ne2 Bd7) 8.Nh3 Bh3 (8...Bh3 9.gh3 Bd6= (9...Nc6 10.Bf5 a5) 10.Bf5 Nc6; 8...a5 9.b5 Nd7 10.Bf5 Nb6) 9.gh3 Be7 10.Bf5 a5. Nokarookoff – Clay56, ChessWorld.net, 2010.

4.e3 Bb4!? 5.a3 Be7+=.

4.e3 Bb4+= 5.c3 Bf8 6.h4 Bg7 7.Qc2 h6 8.Be2 d6 9.Bh5 Be6 10.Nf3 Nc6 11.c4 (11.d4 Qe7–/+) 11...Qd7 (11...g4!? 12.Ng1 d5–+) 12.d4–/+ Bg4 (12...Bf5 13.Qa4–/+) 13.Bg4 Qg4 14.hg5 (14.Rh3 0–0–0+= (worse is 14...Qg2 15.Qe4 Kf8 16.Rh2+=)) 14...fg5 (14...Qg2 15.Qe4 Ne5 16.Nfd2 Qe4 17.Ne4–/+) 15.0–0 0–0–0 16.Nbd2 h5 17.Rab1 h4 18.Nh2 (18.Rb5!? f6 19.Nh2+=) 18...Qd7–/+ 19.d5 Ne5 20.Qb3 b6 21.f4 gf4 22.ef4 Ng4 23.Ndf3 (23.Ng4 Qg4 24.Qh3 Qh3 25.gh3 Rhg8–/+) 23...Nh2 24.Kh2 h3 25.g3 Rde8 26.Rbe1 Rhg8 27.Ng5 Bd4 28.Qd1 Bc5 29.Qh5 f6 30.Ne4 Qg7?? 31.Qf5 Kb7 32.Qf6 Re4?? 33.Qg7+– Rg7? 34.Re4 a5 35.f5 Rg5 36.f6 a4 37.f7 Re5 (37...Re5 38.Rh4 b5+–) 0–1. typ48 – okulew, kurnik, 2013.

4.e3 Bg7 5.d4+= 0–0 6.h3 (6.Qh5 d5+=) 6...h6 (6...f5 7.Bd3+=) 7.Bd3 d6 8.Ne2 Nc6 9.b5 Nb4 10.0–0 Nd3 11.c3?? (better is 11.Qd3!? Re8 12.Ng3+=) 11...Nf2 12.Rf2 (12.Rf2 Re8 Combination; 12.Kf2 Re8 Combination) 12...f5 13.Nd2 (13.Ng3 Re8 14.Qd3 g4 15.Nf5 gh3 16.Ng7 Kg7+=) 13...Be6 (13...Qe8 14.Nf1–/+) 14.a4 b6 (14...a6 15.ba6 Ra6 16.Ng3+=) 15.Rc1 (15.Ng3 Re8=) 15...Qd7 16.c4 f6 (16...d5!?=) 17.d5+= Bf7 18.Nd4 Bg6 19.N2b3 Kh7 (19...Rfe8 20.Ne6 Re6 21.de6 Qe6+/–) 20.Ne6+/– Rfe8 21.Nbd4 Bf7 (21...f4 22.ef4 (22.Ng7?! fe3 23.Re2 Kg7=) 22...a6 23.Qg4+/–) 22.Rf5 Be6 23.Ne6 Re6 24.de6 Qe6 25.Qd3 Kh8 26.Rcf1 Re8 27.R1f3 h5 28.g4 h4 29.Qd5 Re7 30.Qe6 Re6 31.Rd5 Re4 32.Rd4 f5?? 33.Re4+– fe4 34.Rf7 1–0. tyop (1695) – milanio, kurnik, 2013.

4.g3 Bb4 5.a3 Ba5 6.Bg2 c5 7.e3 d5 8.Ne2 Nc6 9.0–0 Bg4 10.Nbc3 Bc3 11.dc3 Be2 (Better is 11...Ne5!?–/+) 12.Qe2= 0–0 13.Rad1 Ne7 14.c4 Qa5 15.Qd3 Rad8 16.cd5 Rd6 17.Qb3 Qc7 18.a4 Rfd8 19.Qc4 a6 20.Rd3 Ng6 21.Qa2 Ne5 22.Rd2 b5 23.ab5 ab5 24.e4 h5 25.Re2 (25...Nc4 26.Qb3+=) +=. baudrey – henrybyrd, Live Game Caissa's Web, 2004.

4.g3 Bb4 5.Bg2 d5 6.a3 Bf8 7.d3 Bg7 8.Nd2 c5 9.Rb1 Nc6 10.e3 b6 11.Ne2 Bg4 12.0–0 0–0 13.h3 Be6 14.c3 f5 15.f3 h5 16.Nb3 g4 17.fg4 fg4 18.h4 Be5 19.Nf4 Bc3 20.Nh5 f5 21.d4 cd4 22.ed4 b5?? (22...Rc8 23.Nf4 Qf6 24.Nd5 Bd5 25.Bd5 Kg7 26.Bc6 Qc6 27.Rf4=) 23.Nf4?? (Better is 23.Rc1 Bb2 24.Rc6+–) 23...Bc8?? (Better is 23...Qd6=) 24.Qd3 Ba5 25.Ng6 Rf6 26.h5 Bc7? 27.Nc5 Bd7? 28.Nf4 Be8? 29.Rbe1?? Bf4+= 30.Rf4 Bh5 31.Re6 Re6 32.Ne6 Qf6 33.Bd5 (33...Ne7 34.Ba8 Qe6 35.Qb5 Qe3 36.Kg2 Qd2 37.Kh1 Qc1 38.Rf1 Qa3 39.Qb8 Kf7 40.Qc7+–; Better is 33.Rf5 Qh6 34.Bd5+–) 1–0. baudrey – henrybyrd, Live Game Caissa's Web, 2004.

3.g3 e6

4.a3 a6 5.Bg2 h6 6.e3 d6 7.Ne2 Nbd7 8.d3 Bg7 9.Nd2 0–0 10.Nc4 e5 11.0–0 Re8 12.Nd2 Nf8 13.c4 Ng6 14.d4 e4 (better is 14...ed4!? 15.Bd4 a5+=) 15.Nc3+/– Bf5 16.Qc2 (16.f3 ef3 17.Qf3 Bd3+/–) 16...Qc8 (16...Qe7!?+=) 17.Nde4+/– Ne4 18.Ne4 Be4? (18...g4 19.Rac1 Qd8+=) 19.Be4+– Kh7 20.Bd3 c6 21.Qd2 Qd7 22.Qc2 Rf8?? 23.Bf5 Qe7 24.d5 Bb2 25.Qb2 Qe5 26.Bg6 fg6 27.dc6?? Qb2–+ 0–1. diablo005 – milanio, kurnik, 2012.

4.a3 d5=.

4.a3 d6 5.Bg2 a6 6.e3 Nbd7 7.Ne2 Bg7 8.d3 h6 9.Nd2 0–0 10.c4 e5 11.0–0 Re8 12.Nb3 Nf8 13.d4 Ng6 14.de5 Ne5 15.Qc2 Be6? (15...g4 16.Rfd1+=) 16.c5 (better is 16.Be5 de5 17.Bb7+–) 16...Qc8 17.cd6 cd6 18.Qc8 (18.Qd1!?=) 18...Rac8+= 19.Nbd4 Nc6 (19...Bd5 20.Rac1 Rc1 21.Bc1 (worse is 21.Rc1 Bg2 22.Kg2 Nd3–/+) 21...Bg2 22.Kg2+=) 20.Ne6 fe6 21.Nc3 Ne5 22.Na4 b5 23.Nc3?? Nc4–/+ 24.Bc1? d5 25.Ne2–/+ e5 26.Bh3 Rcd8 27.Nc3? d4–+ 28.ed4 ed4 29.Nd1 d3 30.Nb2? d2 31.Bd2 Nb2 32.Bc3 Nc4 33.Bg2 Ne4 34.Bg7 Kg7 35.Rfe1 Ncd2 36.Re3 Nf6 37.Rc3 Nc4 38.Bc6 Re2 39.Bf3 Rb2 40.Bb7 Rdd2 41.Rf3 Nd5 42.Bd5 Rd5 43.Kg2 Re5 44.Rf1 Ne3 45.Kg1 Nf1 46.Kf1 Rb1 47.Kg2 Ree1 48.Rf5 Rg1 49.Kh3–+ Kg6 50.Rf3 h5 51.Rd3 1–0. diablo005 – milanio, playok.com, 2013.

4.a3 d6 5.Bg2 a6 6.e3 h6 7.Ne2 Bg7 8.d3 e5 9.c4 0–0 10.0–0 Nbd7 11.Nd2 Re8 12.Nb3 Nf8 13.Qc2 Ng6 14.Rad1 Bd7 (better is 14...Qe7=) 15.Bb7+/– Rb8 16.Bg2 (16.Ba6 Rb6 17.b5 Qa8+–) 16...Qc8 17.d4 Nh5 (17...Bh3 18.f3+/–) 18.de5 de5 (18...Ne5!? 19.c5 Bf5+–) 19.Nc5 Bh3 (19...Nf6+–) 20.Ne4 (better is 20.Bh3 Qh3 21.Na6+–) 20...Bg2+/– 21.Kg2 Qg4 22.h3 (better is 22.Ng1+/–) 22...Nh4= 23.Kh2 Nf3 24.Kg2 Nh4 25.Kh2 Nf3 26.Kg2 Nh4 ½–½. diablo005 – milanio, kurnik, 2012.

4.a3 d6 5.Bg2 Bg7 6.e3 a6 7.Ne2 h6 8.d3 Nbd7 9.Nd2 e5 10.c4 0–0 11.Nb3 Re8 12.Na5 c6 13.d4 ed4 14.Nd4 d5 (14...Ne5!?=) 15.cd5+= Nd5 16.0–0 (16.Ndc6!? bc6 17.Bg7 Kg7 18.Nc6 Ne3 19.fe3=) 16...N7b6 17.Rb1 Na4?? (better is 17...g4+=) 18.Qa4+– Nb6 19.Qc2 Bd4 (19...g4 20.Rbd1 Qf6 21.Rd3+–) 20.Bd4 (worse is 20.ed4 Rb8+–) 20...Nd5 21.Nc4 Be6 22.Ne5 1–0. diablo005 – milanio, kurnik, 2012.

4.a3 d6 5.Bg2 h6 6.e3 a6 7.d3 Bg7 8.Nd2 Nbd7 9.Ne2 e5 10.c4 0–0 11.0–0 Re8 12.Nc3 Nf8 13.Nde4 Ng6 14.Nf6 Qf6 15.Ne4 Qd8 16.Nc3 c6 17.Qe2 Be6 18.Qc2 b5? (18...f5 19.Qe2=) 19.c5?? (better is 19.Bc6 bc4 20.dc4 Bc4 21.Rfd1+–) 19...d5= 20.Rfd1 Bf5 21.e4 d4? 22.ef5+/– dc3 23.Bc3 Nf8?? 24.Bc6+– Re7 25.Ba8 Qa8 26.d4 Nd7 27.d5 Nf6 28.d6 Rd7 29.Re1 Nd5 30.Qe4 f6 31.Rac1 Qc6 32.Bb2 Kh7 33.Rcd1 Nb4 34.Qc6 Nc6 35.Bc3 a5 36.Rb1 b4 37.ab4 ab4 38.Bb4 Nd4 39.Bc3 Nf3 40.Kg2 Ne1 41.Re1 Bf8 42.Bb4 Rb7 43.Rb1 (43.Rb1 Bd6 44.cd6+–) 1–0. diablo005 – milanio, kurnik, 2013.

4.Nf3 h6 5.a3 d6 6.d3 a6 7.Nbd2 Nbd7 8.Bg2 Bg7 9.0–0 0–0 10.Qc1 e5 11.c4 Re8 12.Nb3 Nf8 13.c5 Ng6 14.cd6 cd6 15.Na5 Be6 (15...d5!?=) 16.Nb7+= Qd7 17.Na5 Rec8 18.Qb1 Nh5 19.Nd2 Ra7 20.Ndc4 Bh3? (20...Rcc7 21.e4+/–) 21.Qa2?? (better is 21.Nb6 Bg2 22.Nd7 (22.Kg2?! Ngf4 23.Kh1 Qg4 24.Nc8 Ne2+–) 22...Bf1 23.Nb6+– (23.Kf1?! Rd7 24.d4 Rdc7+–; 23.Qf1?! Rd7 24.Nc4 Rc6+–)) 21...Bg2+/– 22.Kg2 Qg4 23.Bc3?? (better is 23.f3 Qe6 24.e4+/–) 23...Nhf4 (better is 23...Ngf4 24.Kh1 Ne2–+) 24.Kh1–/+ Ne2 25.Qd2?? Qf3 0–1. giorgo – milanio, playok.com, 2012.

4.Bg2 Bb4!? 5.Nf3 Rg8+=.

4.Bg2 d6 5.a3 a6 6.c4 h6 7.d4 Bg7 8.e4 0–0 9.Ne2 Nbd7 10.0–0 Re8 11.Nd2 e5 12.d5 Nf8 13.Nb3 Ng6 14.Nc3 Bd7 15.a4 Qc8 16.Na5 Bg4 17.Qd2 Bd7 18.Nb3 Nh5 19.c5 Bh3 20.cd6 (better is 20.Qe3!?+/–) 20...Bg2= 21.Kg2?? (21.d7 Qd7 22.Rfc1–+) 21...Qg4?? (better is 21...Nh4 22.Kh1 Qh3–+) 22.h3?? (better is 22.Qd1 Qd1 23.Rad1 cd6 24.Na5+=) 22...Nhf4–+ 23.Kh2 (23.Kg1 Qf3 24.Qf4 ef4 25.Nd2–+) 23...Qh3 24.Kg1 Qg2# 0–1. diablo005 – milanio, kurnik, 2012.

4.Bg2 d6 5.a3 a6 6.d3 Bg7 7.Qc1 h6 8.Nf3 Nbd7 9.0–0 0–0 10.e4 Re8 11.Nbd2 Nf8 (11...e5 12.Re1=) 12.c4 (12.e5 N6d7 13.ed6 cd6 14.Bg7 Kg7+=) 12...Ng6 13.Qc2 e5 14.Nb3 Bd7 15.c5 Qc8 16.Na5 Nh5 (16...b6!? 17.Nb3 Ba4=) 17.c6+= Bh3?? (better is 17...bc6 18.Nc6 Ne7 19.Ne7 Re7+=) 18.cb7+– (18.Nb7?! Bg2 19.Kg2 Nhf4 20.Kh1 Qh3+/–) 18...Qd7 19.ba8Q Ra8 20.Qc6 Qg4 21.Qa8 Kh7 22.Qd5 Bg2 23.Kg2 Nhf4 24.Kg1 Nd5 25.ed5 Qf3+= 26.Nc6? Qd5–+ 27.b5?? ab5 28.Nb4 Qb3 29.Rab1 c5 30.Be5 Qa3 31.Bg7 cb4 32.Bh6?? Kh6 33.Kg2 Qd3 34.Rfd1 Qe4 35.Kg1 b3! 36.Rb3 b4 37.Re3 Qc4 38.Rde1 Ne5 39.Re4 Nf3 40.Kg2 Ne1 41.Re1 b3 42.Re2 Qe2 (42...Qe2 43.g4 b2 44.h4 Qg4 45.Kh2 gh4 46.f4 Qg3 47.Kh1 b1Q) 0–1. giorgo – milanio, kurnik, 2013.

4.Bg2 d6 5.e3 h6 6.Ne2 Bg7 7.d3 a6 8.Nd2 Nbd7 9.c4 0–0 10.0–0 Re8 11.a4 e5 12.d4 Kh8 13.Ne4 (13.a5 c5+=) 13...Ne4= 14.Be4 Rf8 (better is 14...ed4!? 15.Bd5 de3 16.Bg7 Kg7 17.fe3 Nf6+=) 15.de5 Ne5 16.Qc2 f5 17.Bg2 c6 (17...a5 18.f4 Nc6 19.Bg7 Kg7 20.b5+=) 18.Nd4 (18.f4 Ng4 19.Bg7 Kg7+/–) 18...Qf6 (18...c5 19.Nb3 cb4 20.f4=) 19.Rad1 (better is 19.f4 Ng4 20.Rae1+/–) 19...d5? (better is 19...f4=) 20.cd5+– cd5 21.Nf3?? (better is 21.Bd5 Rd8 22.Ne2+–) 21...Nf3–+ 22.Bf3 Qb2 23.Qc5 Qf6 24.Bd5 Be6 25.Bb7–/+ Rab8 26.Bg2? Rfc8–+ 27.Qa5 Qe5 28.Qa6 Rb4 29.Bb7?? Rb8 30.Bg2 Bd5 31.a5?? Bg2 32.Kg2 Qe4 33.Kg1 f4 34.ef4 gf4 35.Rde1 Qf3 36.Qa7 fg3–+ 37.hg3? Rf8 38.Re3 Qb7?? 39.Qb7= Rb7 40.Re2 Ra7 41.Ra2 Rfa8 42.a6 Ra6 43.Rc2 Ra1 44.Rc4 Rf1 45.Kf1 Ra1 46.Kg2 Kh7 47.Rh4 Ra3 48.Rc4 Kg6 49.Rc6 Kh5?? 50.Rc5= Kg6 51.Rc6 Kh7 52.Rc7?? Ra2–+ 53.Kf3 Rb2 54.Kg2 Rb3 55.f3 Rc3 56.g4?? Rc7 0–1. diablo005 – milanio, playok.com, 2012.

4.Bg2 h6 5.a3= a6 6.e3 d6 7.Ne2 Bg7 8.d3 Nbd7 9.Nd2 0–0 10.c4 e5 11.0–0 Re8 12.Nc3 Nf8 13.Nde4 N6d7 14.a4 f5 15.Nd2 Nf6 16.Nb3 Ne6 17.Ne2 Kh8 18.d4 e4 19.d5 Nf8 20.c5 (20.Qc2 Ng6=) 20...Ng6 (20...dc5 21.bc5 Nd5 22.Bg7 Kg7 23.Qd2+=) 21.Ned4 (21.c6!?=) 21...Nd5–/+ 22.cd6 cd6 (22...Qd6 23.Qh5 Kh7 24.b5–/+) 23.Rb1 Nb4 (23...Qd7–/+) 24.Qd2? (better is 24.Nf5 Bf5 25.Bg7 Kg7 26.Qd4 Qf6 27.Qb4=) 24...Nd3–+ 25.Bc3 Kh7 26.Rfd1 Be6 27.Bf1 Bc4 28.Ba1? Bb3 29.Rb3–/+ Bd4 30.Bd4 Nge5 31.Rb7 Re7 32.Re7 Qe7 33.Rb1?? Nf3–+ 34.Kg2 Nd2 35.Rd1 Nf1 36.Rf1 d5 37.Rb1 1–0. diablo005 – milanio, kurnik, 2013.

3.g3 Bg7

4.Bg2 0–0 5.d3 Ng4 6.Qc1 e5 7.Nf3 Qf6 8.0–0 Qh6 9.h3 Nf6 10.Ng5 Qg6 11.Be5 d6 12.Bb2 Bf5 13.Nf3 Bh6 14.Qd1 Qh5 15.Bc1 Bh3 16.Bh6 Qh6 17.Nh4 Bg2 18.Kg2 Ng4 19.Rh1 Qf6 20.Nf3 Qa1 21.Qd2 Qg7 22.Nc3 Nc6 23.a3 Rae8 24.Ne4 d5 25.Neg5 f6 26.Nh7 Rf7 27.Rh4 Nh6 28.Nhg5 fg5 29.Qg5 Qg5 30.Ng5 Rg7 31.Nf3 Nf5 32.Rh5 Nd6 33.c3 Re2 34.Nd4 Rd2 35.Nc6 bc6 36.c4 Rf7 37.Rg5 Kh7 38.cd5 Rff2 39.Kh3 Rf1 40.dc6 Rd3 41.Re5 Rd4 42.Re7 1–0. paschalina – sportowiec45, kurnik, 2014.

4.Bg2 a6 5.d3 0–0 6.Nf3 h6 7.0–0 Nc6 8.a3 d5 9.Nbd2 e6 10.c4 d4 11.Nb3 e5 12.b5 ab5 13.cb5 Na5 14.a4 Nb3 15.Qb3 Be6 16.Qc2 Qd7 17.Ne5 Qc8 18.Bd4 Bd5 19.e4 c5 20.Bb2 Be6 21.Nc4 Bc4 22.Qc4 b6 23.Rfd1 Ra7 24.Bc3 Rd7 25.a5 ba5 26.Ra5 Nh5 27.Rda1 Bc3 28.Qc3 Rd4 29.b6 Rfd8 30.Bf1 Nf6 31.Rb1 Qc6 32.b7 Rb8 33.Rab5 Nd7 34.Bg2 Ne5 35.f4 Nd7 36.e5 Qa6 37.Be4 Kg7 38.Qb3 1–0. paschalina – leango, kurnik, 2014.

4.Bg2 Nc6 5.a3 d5 6.e3 Bd7 (6...Bf5 7.h3=) 7.Ne2 (7.Bd5 Nd5 8.Bg7 Rg8+=) 7...a6 (7...Bf5 8.0–0=) 8.d3 (8.Bd5 e5 9.Bg2 Qe7+=) 8...h6 (8...e5 9.Nd2=) 9.Nd2 (9.Bd5 Nd5 10.Bg7 Rg8+=) 9...Na7 (9...Bf5 10.c4 dc4 11.Bc6 bc6 12.dc4=) 10.c4 (10.Bd5!? Bc6 11.Bc6 Nc6 12.Ne4+/–) 10...dc4= 11.Nc4 Bb5? (11...Bc6 12.e4+=) 12.Rc1 (12.Bb7 Rb8 13.Bg2 Bc6+–) 12...0–0 (12...Bc6 13.0–0+=) 13.0–0 (13.Bb7!? Rb8 14.Bg2 Bc6+–) 13...Rb8 14.Nd4 Bc4 15.Rc4 Nd5 (15...Nb5!?+/–) 16.Rc1 1–0. diablo005 – mykolas, kurnik, 2013.

4.Bg2 h5 5.h4 g4 6.c4 Rg8 7.Nc3 e6 8.d3 Qe7 9.a3 Nc6 10.e3 b6? (10...d6 11.Nge2+=) 11.Nge2?? (better is 11.b5 Bb7 12.bc6 dc6 13.Rc1+–) 11...Bb7+= 12.0–0 0–0–0 13.Qb3 Ne5 14.Ne4?? (better is 14.Rfd1=) 14...Ne4–+ 15.de4 Nf3 16.Kh1 Be4 (16...Nd2!? 17.Qc2 Nf1 18.Rf1 Bb2 19.Qb2 e5–+) 17.Rad1 d5 18.Bg7 Rg7 19.c5 b5 (19...bc5!? 20.Qa4 cb4 21.ab4 f5–/+) 20.a4= c6 21.ab5 cb5 22.Qa3 Ne5?? 23.Qa5 Bg2= 24.Kg2 Nc4 25.Qb5 Qb7 26.Qa4 Nb2 27.Qb3 Nd1 28.Rd1 Kc7 29.b5 Rb8 30.Nd4 e5? 31.Nf5 Rg6+/– 32.b6 ab6 33.Rd5 bc5 (33...bc5 34.Qc4 Rd8 35.Qc5 Kb8=) 0–1. sacaniev – grzekot, kurnik, 2012.

3.g3 h5

4.d3 b6 5.Nd2 Bb7 6.f3 g4 7.Bg2 Rg8 8.Ne4 (8.e4 Bg7=) 8...Ne4+= 9.de4 d5 (9...h4 10.a3+= (worse is 10.gh4 e5–/+)) 10.a3 (10.ed5 Qd5 11.Qd5 Bd5=) 10...Qd6 (10...de4 11.Qd8 Kd8 12.Rd1 Nd7 13.fe4+=) 11.e5 (better is 11.fg4!? de4 12.gh5+=) 11...Qe6 12.Qd4 (12.f4!?=) 12...Nc6–/+ 13.Qe3 0–0–0 14.f4 Bh6 15.Qd3 Kb8 16.e3 f6 17.ef6 ef6 18.Ne2 Rde8 19.Nd4 (19.Rd1!? Ne7 20.Nd4=) 19...Nd4+= 20.Bd4 Bg7 21.0–0 Qe7 22.Rfe1 h4 23.c4? (better is 23.b5!?+=) 23...dc4–/+ 24.Qc4 hg3 25.hg3 (better is 25.Bb7 gh2 26.Kh2 Kb7 27.Rac1–+) 25...Rh8?? (25...Bg2 26.Bb6 cb6 27.Kg2–+) 26.Rac1?? (better is 26.e4=) 26...Bf8?? 27.Bb7 Kb7 28.Qd5 Kb8= 29.Rc6 Qh7 30.Kf2 Qh2 31.Kf1?? Bd6 32.Qg2= Qh7 33.Rc2 Qg7 34.Kf2 Qf7 35.Rec1 Qb3 36.Rc3 Qa4 37.R1c2 Qd7 38.e4 Rh6 39.e5?? Reh8?? 40.ed6+/– Rh2 41.dc7?? Kc8–+ 42.Bf6 Rg2 43.Kg2 Qh7 44.Kf2 Qh2+= 45.Ke3 Qg1 46.Ke4 Re8? 47.Kf5 Rg8?? 48.Bg5 Qd4 49.Kg4 Qd7?? 50.Kf3+– Qd5 51.Kf2 Re8 52.a4?? Qd4 53.Kf3 (53.Kf3=) 1–0. giorgo – radpo, playok.com, 2012.

4.Bg2 g4 5.d3 d6 6.Nd2 Nc6 7.a3 Ne5 8.c4 c6 9.h3 Bf5 (9...Bg7 10.Be5 de5 11.hg4 hg4 12.Rh8 Bh8 13.Rb1=) 10.h4 (better is 10.b5 cb5 11.Be5 de5 12.Bb7+/–) 10...Bd3?? (10...Bh6=) 11.Qb3?? (better is 11.Be5 de5 12.ed3 Qd3 13.b5+/–) 11...Bf5–/+ 12.e4 Be6 13.Ne2 b5 14.Rc1? bc4 15.Nc4 Rb8 16.Nd4? Bc4–+ 17.Rc4 Nc4 18.Qc4–/+ Rc8 19.0–0 e5 20.Nf5 Qb6 21.Rd1 a5?? 22.Bc3?? ab4 23.ab4 Rd8 24.Bd2 d5–+ 25.ed5 cd5 26.Qa2 Bb4?? 27.Qa4+– Kf8 28.Bb4 Kg8 29.Be7 Rb8 30.Bd6 (30.Bd5 Nd5 31.Bd6 Nc3 32.Ne7 Kf8=) 1–0. sacaniev (1635) – ptmb, kurnik, 2013.

3.h3 Bg7

4.a3 b6 5.Nf3 Bb7 (5...h6 6.e4+=) 6.Ng5+= e6 7.Nf3 d6 8.e3 Nbd7 9.Be2 Nh5 (9...Rg8 10.Nc3+/–) 10.Bg7 Ng7 11.d4 Rg8 12.Nbd2 Nh5 13.g4 Nhf6 14.c4 c5 15.dc5 dc5 16.b5 (16.Rg1 h6+/–) 16...Ne5 17.Rg1 Nf3 (17...Nd3 18.Bd3 Qd3 19.Qb1+=) 18.Nf3 (18.Bf3 Qe7+/–) 18...Qd1 19.Rd1 Ne4 20.Nd2 Nc3 21.Rc1 Ne2 22.Ke2 Rd8 (22...a6 23.Rb1+/–) 23.Nf3 (23.Rcd1 f6+/–) 23...Bf3 (23...Ke7 24.Rcd1+/–) 24.Kf3 Rd2 25.Rgd1 Rd1 26.Rd1 Ke7 27.Kg3 Rd8? (better is 27...a6+/–) 28.Rd8+– Kd8 29.Kf4 Ke7 30.Ke5 (30.e4 Kf6+–) 30...f6 31.Ke4 (31.Kf4 Kd7+–) 31...Kd6 32.f4 h6 33.h4 Ke7 34.g5 (34.f5 e5 35.Kd5+–) 34...f5 (34...Kf7+–) 35.Ke5 hg5 36.hg5 Kf7 37.Kd6 (37.Kd6 Kg6 38.Ke6+–) 1–0. Fournier,Frederic (1620) – yingyang, Active, 2007.

4.a3 d5 5.Nf3=.

4.e4 d6 5.Nf3 h6 6.Bc4 c6 7.Qe2 d5 8.ed5 cd5 9.Bb5 Nc6 10.Ba4 0–0 11.b5 Na5 12.d3 e5 13.0–0 Re8 14.Qd2 e4 15.Nd4 g4 16.Bc3 b6 17.h4 Nh5 18.Ne2 d4 19.Ba5= ba5 20.b6 e3=+ 21.Qe1 ef2 22.Qf2 Re2 23.Qe2 Ng3–/+ 24.Qe8 Qe8 25.Be8 Nf1 (26.Bc6 Ne3–/+) 0–1. jelgava – marekt, ChessWorld.net, 2005.

4.Nf3 h6 5.e3 Nc6 6.b5 Nb4 7.Bc4 e6 8.a3 Nbd5 9.0–0 Nb6 10.Ba2 d5 11.d3 Na4 12.Bd4 b6 13.c3 Qd6 14.Qa4 Qc5 15.Bc5 Rf8 16.Bf8 Ne4 17.de4 Bd7 18.ed5 Bc6 19.dc6 Rd8 20.Nd4 Rd6 21.Bd6 Be5 22.Be5 Ke7 23.Qb4 Ke8 24.Bf6 e5 25.Qe7 1–0. Phomopsis – ISMLYLMZ, lichess.org, 2018.

4.Nf3 h6 5.e4 d5 6.ed5 Qd5=.

4.Nf3 h6 5.h4 d6 (better is 5...g4!? 6.Ne5 d6=+) 6.hg5+= hg5 7.Rh8 Bh8 8.Ng5 Nc6 9.a3 Bf5 10.e3 Qd7 11.Nc3 Bg6 12.d4 0–0–0 13.b5 Nb8 14.a4 Qf5 15.f4 Nbd7? (15...Qd7!?+=) 16.Be2 (16.Bd3 Qg4 17.Qg4 Ng4 18.Bg6 fg6+–) 16...Nd5 (16...Ng8 17.g4 Qf6 18.a5+–) 17.g4+– Qc2?? (better is 17...Nc3 18.gf5 Nd1 19.Kd1 f6 20.fg6 fg5+–) 18.Qc2 (18.Nd5?! Qb2 19.Qc1 Qc1 20.Rc1 Bf6+–) 18…Bc2 1–0. jelgava – Arran, ChessWorld.net, 2005.

3.h4 g4

4.e3 d5 5.c4 =+.

4.e3 g3 5.fg3 Rg8 (5...Bg7 6.g4=) 6.Bf6+= ef6 7.a3 (7.Qh5 Rg7+=) 7...d5 8.Ne2 Bd6 9.Nbc3 (9.c3 Bg4 10.Qc2 f5+=) 9...Bg4 (9...c6 10.Nf4 Rg3 11.Qh5=) 10.Qb1+= c6 11.Nf4 (11.b5 Qe7+=) 11...Qc7 (11...Qe7 12.Nce2 f5 13.Nd4+=) 12.Qb3+= Nd7 13.Bd3 Ne5 (13...f5 14.0–0+=) 14.Rf1 (14.Bh7!? Rh8 15.Bd3+–) 14...h5 (14...Nd3 15.cd3 d4 16.Ne4=) 15.Be2+= a5? (15...Ng6 16.Nfd5 Bg3 17.Kd1 Be2 18.Ke2 cd5 19.Nd5+–) 16.b5 (16.Nfd5!? cd5 17.Nd5 Qd8 18.Nf6 Ke7 19.Bg4 hg4 20.Ng8 Qg8 21.ba5 Ra7+–) 16...a4 (16...Nd7 17.0–0–0+–) 17.Qa2 (17.Na4 Be2 18.Ne2 Nc4+–) 17...Be2 (17...Rh8 18.Rf2+–) 18.Nce2 (18.Nfe2 Nc4 19.e4 Bg3 (worse 19...Na3 20.bc6 bc6 21.ed5 Bg3 22.Ng3 Qg3 23.Rf2 Qh4 24.Qa3 Rg2 25.Qc5 Rg1 26.Ke2 Qg4 27.Rf3 Rg2 28.Ke3 Qg5 29.Ke4 f5 30.Ke5=) 20.Kd1 Be5 21.bc6 bc6 22.ed5 cd5=+) 18...c5?? (better 18...Rh8+=) 19.Nd5+– (19.Qd5?! Rh8+–) 19...Qd8 (19...Qa5 20.Nf6 Ke7 21.Qd5+–) 20.Nf6 Kf8 (20...Ke7 21.d4 cd4 22.ed4+–) 21.Ng8 Kg8 22.d4 c4 (22...Qa5 23.c3 cd4 24.ed4+–) 23.de5 Qa5 (23...Be5 24.Qc4 Qd7 25.Rd1+–) 24.c3 Be5 25.Qc4 Rf8 (25...Qc7 26.Qc7 Bc7 27.Rd1+–) 26.Rf5 Bg7 27.Rh5 (better 27.Rg5+–) 27...Qc7 (27...Qb6 28.Qe4 Rd8+–) 28.Qc7 f5 29.Rg5 (29.Qc4 Rf7 30.Rf5 Be5 31.Qf7 Kh8 32.Rh5) 29...Rf7 30.Qc8 Rf8 (30...Kh7 31.Rh5 Bh6 32.Rh6 Kh6 33.Qh8 Rh7 34.Qf6 Kh5 35.Qg5) 31.Qe6 Rf7 32.Rd1 (32.Rd1 Kh7 33.Qf7 Kh6 34.Qg7) 1–0. FeegLood (2770) – HenryGrob (2495), Time forfeit, 2016.

4.e3 h5 5.c4 Bg7=.

4.e3 h5 5.Ne2 Bg7 6.c4 e6 7.Qc2 Qe7 8.a3 d6 9.Ng3 Nc6 10.d4 Bd7 11.b5 Na5 12.Bc3 b6 13.Ba5 ba5 14.a4 0–0 15.Nd2 e5 16.d5 a6 17.Rb1 ab5 18.cb5 Rac8 19.Bc4 Rfe8 20.Nde4 Ne4 21.Qe4 (21.Ne4?! Bf5+=) 21...Rf8 22.Bd3 (better is 22.Nh5 f5 23.Qd3+–) 22...f5+= 23.Qc4 e4 24.Be2 (worse is 24.Nh5 ed3 25.Ng7 Qg7 26.Qd3 f4–/+) 24...f4 (24...Qf7 25.0–0=) 25.ef4 (better is 25.Nh5 fe3 26.fe3+/–) 25...Rf4? (better is 25...e3!? 26.fe3 Qe3+=) 26.Nh5+– Rf5 (better is 26...Rff8 27.Ng7 Qg7+–) 27.Bg4 (27.Ng7?! Qg7 28.h5 g3+/–) 27...Re5 28.Bd7 (28.Ng7?! Bg4 29.Ne6 Be6 30.de6 d5+–) 28...Qd7 29.Ng7 Kg7 30.Rh3 Rf8 31.Rbb3 Kh7 32.Rbc3 Rf7 33.Rhe3 Qf5 34.Qe2 Rd5 35.g4 Qf6 36.g5 Qg6 37.Re4 Kg7 38.Re6 Qb1 (38...Qb1 39.Rc1 Qc1 40.Qd1 Qd1) 0–1. typ48 – okulew, kurnik, 2013.

4.e3 h5 5.f3 d6 6.fg4 Bg4–/+ 7.Be2 Bg7 8.Bg4= hg4 9.g3 e5 10.Ne2 Nbd7 11.0–0 Qe7 12.d4 Ne4 13.Nd2?? Ng3! 14.Ng3 Qh4 15.Qe2 Qg3 16.Qg2 Qe3 17.Rf2 g3 (18.Raf1 ed4 19.Qb7 Rb8 20.Qe4 Qe4 21.Ne4 gf2 22.Nf2 Rb4–+) 0–1. volkerkoch – henrigrob30, Live Game Caissa's Web, 2005.

4.e4 d6 5.Nc3=.

4.e4 d6 5.Bf6 ef6 6.Nc3=.

4.e4 e5 5.Be5 Bb4 6.Nc3 (6.c3 Be7 7.Bf6 Bf6 8.Qg4 d5+=) 6...d6 (6...Nc6 7.Bf6 Qf6 8.Nd5=) 7.Bf6 Qf6 8.Nd5 Bd2?? (better is 8...Qd4 9.Rb1 Qe4 10.Qe2 Qe2 11.Be2 Ba5=) 9.Ke2+– Qd4 10.Qd2 Qa1 11.Nc7 Kd7 12.Na8 b6 13.Qd5 Ba6 14.Kd2 Qf1 15.Qf7 Kc6 16.Qc7 Kb5 17.Ne2 (17.Qa7?! Qf2 18.Ne2 Ka5+/–) 17...Qh1 (17...Rc8 18.Rf1 Rc7 19.Nc7 Kc6 20.Na6 Na6+–) 18.Nc3 Ka5 19.Qd6 b5 20.Qa3 1–0. Rosner,Dirk – Reichel, Tiger–SC, 1999.

4.e4 e6 5.a3 (5.e5 Nd5+=) 5...Rg8 6.e5 Nh5 7.d4 f5 8.Nd2 b6 9.Nc4 Bb7 10.Qd2 g3 11.0–0–0 (11.f3 d5 12.ed6 cd6=) 11...gf2+= 12.Qf2 a5 13.Qd2? (better is 13.b5+=) 13...Ng3–+ 14.Rh2 ab4 15.ab4 Ra4 16.Bd3 Rb4 (16...Ne4 17.Be4 Be4 18.c3–+) 17.c3 (better is 17.Nd6!? cd6 18.Qb4 de5 19.Qb3–/+) 17...Ra4–+ 18.Nf3 Ba6 19.Ne3 Bh6 20.Kc2 Ne4 (20...Bf4 21.Rh3–+) 21.Be4 fe4 22.Ng5 Bd3 23.Kc1 Qe7 (better is 23...Nc6!? 24.Re1 Qa8–+ (24...Bg5?! 25.hg5 Qa8 26.Kd1–+)) 24.Ng4–/+ Bg5 (24...Rg5 25.hg5 Bg5 26.Nf6 Qf6 27.ef6 Bd2 28.Rd2=) 25.hg5+= Kd8 26.Nf2 (26.Nf6 Rg7 27.g6 Rg6 28.Rh7+–) 26...Nc6 27.Nd3 ed3 28.Qd3 Qg5 (28...Rg5?! 29.Rh7 Qe8 30.Qc2=) 29.Qd2 Qg6 30.Qd3 Qg5 (30...Qg4!? 31.Qh7 Qf4 32.Kc2 Ne7+=) 31.Qd2= Qg6 (31...Qg6 32.Qd3 Qg7–/+; better is 31...Qf5!? 32.Qh6 Rg6 33.Qh7 Ne7+=).

4.e4 Rg8 5.e5 Nd5 6.a3 d6 7.c4 Nf4 8.g3 Ne6 9.Bd3 (9.Qa4!? Bd7 10.Qc2 de5 11.Qh7=+) 9...de5–/+ 10.Bh7 Rg7 11.Be4 Nd4 12.Ne2 Nf3 13.Bf3 gf3 14.Ng1 Qd3 (14...Rg4 15.d3=) 15.Nc3= Bg4 16.Nd5 Qe4 17.Ne3+/– Nc6 18.d3 Qg6 19.Ng4 Qg4 20.Nf3 f6 21.h5 e6 22.h6 Rh7+= 23.b5 Ne7 24.Rh4 Qg6 25.Be5 fe5–/+ 26.Ne5 Qg5 27.d4 Bh6 28.Qe2 0–0–0 29.Rd1 Nf5 30.Rg4 Qh5 31.Qe4 Bg7 32.Nf3 Kb8 33.Rf4 Nd6 34.Qd3 Rhh8 35.Rh4 Qe8 36.Rh8 Qh8 37.Ng5 Qh1 38.Qf1 Qh5 39.f4 Nf5 40.Qf3 Qg6 41.Qe4 Bd4 42.Rd3 Qh5 43.Qe2 Qh1 44.Kd2 Qa1 45.Kc2 Ng3! 46.Qf3 Qb2 47.Kd1 Rh8 48.Nh3 Qb1 49.Kd2 Rh3 50.Qg3 Qa2 51.Kd1 Rh1 52.Qe1 Qb1 53.Kd2 Qe1 54.Kc2 Qb1 55.Kd2 Qd1# 0–1. Caissa (1760) – orane (1925), Live Game Caissa's Web, 2003.

4.e4 Rg8 5.e5 Nd5 6.Bd3 e6 (6...Nf4 7.Bh7 Ng2 8.Kf1=) 7.Bh7 (7.Nc3 Nb4 8.Bh7+–) 7...Rg7 (better 7...Rh8 8.Be4 Rh4 9.Rh4 Qh4 10.Bd5 ed5=+) 8.Be4+– Bb4 9.h5 Rg5?? (better 9...Qg5 10.h6 Rg8+–) 10.h6+– Re5 (10...Ke7 11.Bd5 Qh8+–) 11.Be5 f6 (11...Nf6 12.Bf6 Qf6+–) 12.h7 (better 12.Qg4 fe5 13.Bd5 Qf6+–) 12...fe5 13.Qg4 (13.h8Q Bf8 14.Qg4 Qf6 15.Bd5 Qf4 16.Qg6 Ke7 17.Rh4 c5 18.Rf4 Bg7 19.Qgg7 Kd6 20.Qe5 Ke7 21.Qf8) 13...Qf6 14.Qg8 Ke7 15.h8Q Bd2 16.Nd2 Qf2 17.Kf2 (17.Kf2 Kd6 18.Qe5 Kc6 19.Qd5 ed5 20.Qd5 Kb6 21.Nc4 Ka6 22.Qa5) 1–0. DEFFM – GuestJYCX, freechess.org, 2019.

4.g3 d6 5.Bg2 e5 6.d3 Nc6 7.a3 a5 8.b5 Nd4 9.a4 c5 10.bc6 bc6 11.Bd4 ed4 12.Bc6 Bd7 13.Ba8 Qa8 14.f3 Be6 15.Nd2 Nd5 16.Ne4 Ne3 17.Qb1 d5 18.Qb5 Ke7 19.Qc5 Kd7 20.Nf6 Kd8 21.Qb6 Ke7 22.Qc5 Kf6 23.Qd4 Kg6 24.Qe3 Bh6 25.h5 Kg7 26.Qe5 Kg8 27.Qd6 Bg7 28.Rc1 Bc3 29.Kf1 d4 30.h6 Qc8 31.Qe7 Qd7 32.Qg5 Kf8 33.Qg7 Ke7 34.Qh8 Bf5 35.Qe5 Qe6 36.Qc5 Kf6 37.Rh5 Bg6 38.Qg5 1–0. Adamkosh (1770) – ferrazferraz (1650), lichess.org, 2019.

3.h4 gh4

4.Rh4 e6 5.e3 Nd5 6.g3 (6.Qh5 Rg8 7.Qh7 Nf6 8.Bf6 Qf6 9.Qg8 Qh4+–) 6...Rg8 7.Qf3 White gets in control 7...Bb4 (7...h6 8.a3+=) 8.Rh7+– Do you see the mate threat? 8...Qe7 9.a3 Ba5 10.c4 Nb6 11.Bf6 Qd6?? (better 11...Qf8+–) 12.Qh5 Rf8 (12...Qf8 13.Qa5 d6 14.Nc3+–) 13.Qa5 (13.Bg7 Nc6+–) 13...Nc4 (13...c5 14.Nc3 Na6 15.Bg7+–) 14.Bc4 Nc6 15.Qh5 e5 (15...Ne7 16.Bg7 Ng6 17.Bf8 Kf8+–) 16.Bf7 Rf7 17.Qf7 1–0. onur604 (2320) – GOD_Io_oI (2565), lichess.org, 2020.

4.Rh4 e6 5.e3 Bg7 6.Rh1 Nh5 7.Bg7 (7.Qh5?? Bb2 8.d4 Ba1–+; 7.Rh5 Bb2 8.Nc3 Ba1 9.Qa1 Qf6–/+) 7...Ng7 8.Nc3 d6 9.a4 a6 10.b5 Nd7 11.Qg4 Kf8 (11...Nf5 12.ba6 ba6 13.Bd3+=) 12.Nf3 Nf6 13.Qg3 Nf5 14.Qg5 (14.Qh3 Ke8+=) 14...Bd7 15.g4 (15.ba6 ba6 16.Qf4+=) 15...Ng7 (15...Rg8!? 16.gf5 Rg5 17.Ng5 ab5 (17...ef5?! 18.ba6 ba6 19.Nh7 Nh7 20.Rh7=) 18.Bb5 Ke7–/+) 16.Bg2 (better is 16.ba6 ba6 17.d4+=) 16...d5?? (better is 16...ab5 17.Nd4 b4 (worse is 17...ba4 18.Bb7 Ng8 19.Qd8 Rd8 20.Nc6 Bc6 21.Bc6+=) 18.Bb7 bc3 19.Ba8 Qa8–/+) 17.Ne5+– Ne4? (17...Kg8+–) 18.Qd8 Rd8 19.Ne4 de4 20.Be4 c6 21.bc6 Bc6 22.Bc6 bc6 23.Nc6 Rc8 24.Nb4 a5 25.Nd3 Rc2 26.Kd1 Rc6 27.Ke2 Ke7 28.Ne5 Rc7 29.d3 Ne8 30.Nc4 Nd6 31.Na5 Ra8 32.Nb3 Rc3 33.Nd4 Rac8 34.Rh7 e5 35.Nf5 Nf5 36.gf5 Rc2 37.Kf3 Rd2 38.a5 Rd3 39.a6 Ra8 40.a7 Rd7 41.Rh4 Rda7+/– 42.Ra7 Ra7 43.Re4 f6 44.Rc4 Kd6 45.Rc8 Rf7 46.Ke4 Kd7 47.Ra8 Rf8?? 48.Ra7 Kc6 49.Ra6 Kb5 50.Re6 Kc5 51.f4 ef4 52.Kf4 Rf7 53.e4 Kd4 54.e5 fe5 55.Re5 Rf6 56.Re4 Kd5 57.Re5 Kd6?? 58.Ra5 Kc7 59.Kg5 Rb6 60.Rc5 (60.Rc5 Kd6 61.Rc1+–) 1–0. wk1234 – milanio, kurnik, 2012.

4.Rh4 Bg7 5.e3 d5 6.Bd3 (6.Nf3 Rg8+–) 6...Qd6 (6...e5!? 7.Nc3 Nc6=) 7.Nf3+= e5? (7...Nc6 8.b5 Nb4+–) 8.Be5+– Qb4?? (8...Qd8+–) 9.Rb4 c5 10.Bb5 Bd7 11.Bd7 Nbd7 12.Rb7 Ne5 13.Ne5 Rf8 14.c4 d4 (14...Rh8 15.Rf7 0–0–0 16.Qa4 Rd6 17.Qa7 Nd7 18.Nd7 Rd7 19.Qd7 Kb8 20.Qb7) 15.Qa4 Kd8 16.Qc6 Rc8 (16...de3 17.Rd7! Nd7 18.Qd7) 17.Rd7! Ke8 (17...Nd7 18.Qd7 Mate attack) 18.Qc8 1–0. DEFFM – GuestCNRL, freechess.org, 2019.

4.Rh4 Bg7 5.Nf3 Nc6 6.b5 Na5 7.Bc3 b6 8.g3 Bb7 9.Bg2 0–0 10.Ba5 ba5 11.Nc3 Nd5 (11...a6+=) 12.Rc4?? (better is 12.Nd5 Bd5 13.c4+/–) 12...Nc3 13.dc3 d5 14.Rc5?? (better is 14.Rg4=) 14...Qd6–+ 15.Rd5 (15.Rc6 Bc6 16.bc6 Bc3 17.Nd2 Ba1 18.Qa1 Rab8–+) 15...Bd5 (worse is 15...Qd5 16.Qd5 Bd5 17.0–0–0–+) 16.Rb1 (16.Qd3 Qc5 17.Kf1 Bc3–+) 16...Bc3 17.Kf1 Bf3 (better is 17...Ba2 18.Qd6 cd6 19.Rd1–+) 18.Qd6 (18.Bf3 Rab8 19.Qd3–+) 18...Bg2 19.Kg2 ed6 20.Rb3 Be5 21.f4 Bf6 22.e4 a6 23.b6 cb6 24.Rb6 Be7 25.Rb7 Rfe8 26.f5 Bf6 27.Rb6 Re4 28.Rd6 Bc3 29.Kf3 Ra4 30.Rc6 Bb4 31.c3 Bf8 32.c4 Ra2 33.c5 (33.f6 a4 34.Rb6 Ra3 35.Kg2 Rb3–+) 33...Rc2 34.Rc7 Rc5 35.Rd7 a4 36.Rd3 Rf5 37.Kg4 Ra5 38.Rd2 a3 39.Ra2 Rb8 40.Kf4 Rb2 41.Ra1 a2 42.Rg1 Rb1 43.Rb1 ab1Q (43...ab1Q 44.Ke3 Ra3 45.Kd4 Qd3 46.Ke5 Bd6 47.Kf6 Qg6#) 0–1. wk1234 – szuetam13, kurnik, 2012.

4.Rh4 Bg7 5.Nf3 d6 6.g3 Nbd7 7.Bg2 e6 8.a4 a6 9.Nc3 Nd5 10.Rb1 Nc3 11.Bc3 Bc3 12.dc3 Ne5? (better is 12...e5!?=) 13.Ne5+/– de5 14.Qd8 Kd8 15.Rd1 Ke7 16.Re4 c6 17.Re5 Bd7 18.Rh5 Rad8 19.c4 Be8 20.Rd8 Kd8 21.b5 ab5 22.cb5 f5 23.bc6?? (better is 23.Rh6 Kd7 24.bc6 bc6 25.Rh4+–) 23...Bh5–/+ 24.cb7 Kc7 25.a5 Kb8 26.a6 Be8 27.a7? Ka7–+ 28.c4 Kb8 29.Kd2 Bd7 30.Kc3 Kc7 31.Kb4 Rb8 32.c5?? Bc6 33.Bc6 Kc6 34.e4 Rb7 35.Kc4 fe4 36.f4 Rb5 37.Kd4 Rc5 38.Ke4 Kd6 39.g4 Rc4 40.Kf3 h6 41.Kg3 Kd5 42.g5 hg5 43.fg5 Ke5 44.g6 Kf6 0–1. wk1234 – milanio, kurnik, 2012.

2.Bb2 Bg7??

3.Bg7 c6 4.Bh8 Na6 5.a3 d6 6.c4 (6.e4 Nc7+–) 6...Qb6 7.Nf3 Bd7 (7...g4 8.Ng5+–) 8.Bd4 (better is 8.Ng5 h6 9.Nf3+–) 8...0–0–0 (8...c5 9.bc5 dc5+–) 9.Bb6 ab6 10.e3 (better is 10.Ng5 f5+–) 10...c5 11.Qb3 (11.Ng5 f6 12.Nh7 Bf5+–) 11...cb4 12.ab4 (12.Ng5 ba3 13.Qa3 Nh6+–) 12...Bc6 13.Be2 (13.Ng5!? Nh6+–) 13...Nh6 14.0–0 f6 15.b5 Bb5 16.cb5 (better is 16.Qb5 Nc7 17.Qb6 Kd7+–) 16...Nb8 17.Ra8 (17.Qe6 Rd7 18.Ra8 Kc7+–) 17...Nf7 18.Nc3 e6 19.Rfa1 e5 20.Qf7 h6 21.Qf6 Rd7 22.Qh6 d5 23.Qg5 d4 24.ed4 ed4 25.Ne4 Rc7 26.h4 Rc6 27.bc6 bc6 28.Nd6 Kd7 29.Nf7 c5 30.N3e5 Kc8 31.Ba6 Kc7 32.Qe7 Nd7 33.Qd7 1–0. edfdo – TORA, Live Game Caissa's Web, 2004.

3.Bg7 Nc6 4.Bh8 (4.b5 Ne5 5.Bh8 f6+–) 4...Nb4 5.Be5 1–0. markjburden – seanscott, net–chess.com, 2009.

3.Bg7 f5 4.Bh8 Nc6 (4...Nf6 5.e4+–) 5.a3 (5.b5!? Nb8+–) 5...Nd4 (5...Nf6 6.e3 e6 7.d4+–) 6.e3 (6...Ne6 7.Qh5 Kf8 8.Qh7+–; better is 6.Bd4!? g4+–) 1–0. IroniteNC – lachezar, internet, 2005.

3.Bg7 f6 4.e3 h6 (4...Nh6 5.Qh5 Nf7 6.Bh8 d5 7.Qh7 Be6+–) 5.Qh5 1–0. Pierre – Hulaiko, internet, 2020.

3.h4 Bb2–+ 4.Nc3 Ba1 5.Qa1 e6 (better 5...gh4 6.Nf3–+) 6.Ne4 f6 7.hg5 d5 (better 7...d6!? 8.gf6 e5 9.f7 Kf7 10.Qc3–+) 8.gf6 de4?? (better 8...d4 9.f7 Kf7–+) 9.f7= Kf7 10.Qh8 Qf6 11.Rh7 Kg6?? (better 11...Kf8=+) 12.Qg8 (12.Qg8 Qg7 13.Qg7 Kf5 14.g4 Kf4 15.Nh3) 1–0. afsharian – medaglia, lichess.org, 2018.

3.Bg7 Nf6

4.Bh8 Nc6 5.Bf6 ef6 6.b5 Ne7 7.e3 c6 8.c4 b6 9.bc6 dc6 10.Nc3 Bb7 11.Nf3 Qd7 12.Be2 0–0–0 13.0–0 Kb8 14.d4 Ka8 15.Qb3 g4 16.Nd2 h5 17.Nde4 f5 18.Nf6 Qd6 19.Nh5 Ng6 20.d5 c5 21.a4 Re8 22.Nb5 Qc7 23.Nc7 Kb8 24.Ne8 Bd5 25.cd5 f4 26.Qb5 f3 27.Qd7 a5 28.Qc7 Ka8 29.Qc8 Ka7 30.Nd6 fe2 31.Qb7 1–0. Adamkosh (1945) – Teepu, lichess.org, 2020.

4.Bh8 e6 5.Bf6 Qf6 6.Nc3 b6 7.e3 Bb7 8.d4 Nc6 9.b5 0–0–0 10.bc6 Bc6 11.Ba6 Bb7 12.Bb7 Kb7 13.Qe2 e5 14.Nd5 ed4 15.Nf6 d3 16.Qf3 Kb8 17.cd3 Rf8 18.Rc1 d5 19.Nd7 Ka8 20.Nf8 f6 21.Qd5 Kb8 22.Nd7 Kc8 23.Qc6 Kd8 24.Qc7 Ke8 25.Nf6 Kf8 26.Qh7 g4 27.Rc8 1–0. Adamkosh (1930) – Lagardeduroi_Dario, lichess.org, 2020.

4.Bh8 Kf8 5.h4 gh4 6.Bf6 ef6 7.Rh4 Qe8 8.Rh7 f5 9.Rh8 Kg7 10.Re8 Kf6 11.Rc8 c5 12.Qc1 Na6 13.Ra8 Nc7 14.Ra7 Kg5 15.Rb7 Kh4 16.Rc7 f4 17.Nf3 Kh5 18.Rc5 Kg4 19.Rg5# 1–0. Machete99 – guest812, ICC, 2002.

4.Bh8 h6 5.e3 e6 (5...d6 6.Bf6 ef6 7.Nc3+–) 6.Bf6 (6.Bf6 Qf6 7.Nc3+–) 1–0. bambinik – guest, gameon.it, 2001.

3.Bg7 g4

4.Bh8 d6 5.Bb2 (5.e4 Nf6 6.Nc3 Nbd7+–) 5...Nc6 (5...e5 6.d4 Nc6 7.de5 Ne5 8.e4+–) 6.a3 (6.b5 Ne5+–) 6...Bd7 7.e3 a6 8.Be2 Nb4 (8...Nh6 9.Bd3+–) 9.ab4 d5 10.Bg4 Bg4 11.Qg4 Nf6 12.Bf6 ef6 13.Qg8 Ke7 14.Qd8 (14.Qh7 c6+–) 14...Kd8 15.Nc3 b6 16.Nd5 c6 17.Nb6 Rb8 18.Ra6 Rb6 19.Rb6 f5 20.Rc6 Kd7 21.b5 Ke7 22.b6 f6 23.b7 f4 24.b8Q f3 (24...Kf7 25.Rc7 Ke6 26.Qe8 Kf5 27.Rc5 Kg4 28.Qh5) 25.Qb7 Ke8 (25...Kd8 26.Rc8) 26.Rc8 1–0. Fournier,Frederic (1990) – NN, Active, 2004.

4.Bh8 g3 5.hg3 f5 (5...h6 6.e4 d6 7.Nf3+–) 6.e3 f4 7.ef4 (7.Qh5 Kf8 8.Qh7 d5+–) 7...e5 8.f5 (8.Qh5 Kf8 9.Qf5 Nf6 10.Rh7 b6 11.Bg7 Kg8 12.Qg6 Nh7 13.Bh6 Kh8 14.Qg7) 8...e4 9.g4 (better 9.Qh5 Kf8 10.Nh3 Qe7+–) 9...e3 10.de3 (10.Qe2 Qe7 11.Qe3 Qe3 12.de3 Nc6+–) 10...d5 11.Bb5 (11.Rh7 Qd6+–) 11...Bd7 12.Qd5 Bb5 13.Qg8 Kd7 (13...Ke7 14.Rh7 Kd6 15.Qe6) 14.Qd5 (14.Qe6) 14...Ke8 15.Qb5 Ke7 16.f6 (16.Qe5 Kf8 17.Qg7 Ke8 18.Qg8 Ke7 19.Rh7 Kd6 20.Qe6) 16...Kf7 17.Rh7 Ke6 (17...Kf8 18.Bg7 Kf7 19.Qc4 Kg6 20.Rh6 Kg5 21.Nf3) 18.Qf5 Kd6 19.f7 (19.Nc3 Qg8 20.0–0–0 Kc6 21.Qc5) 19...Qh8 (19...Qf8 20.Nc3 a6 21.Rh6 Qh6 22.Qe5 Kd7 23.0–0–0 Kc8 24.Qe8) 20.Rh8 (20.f8Q Qf8 21.Qf8 Ke5 22.Re7 Kd5 23.Qf5 Kc6 24.Qc5) 20...Kc6 (20...Nd7 21.Rh6 Ke7 22.Qe6 Kf8 23.Rh8 Kg7 24.Rg8 Rg8 25.fg8Q) 21.f8Q (21.f8Q Kb6 22.Q8c5 Ka6 23.Qb5; 21.Rh6) 1–0. pereira – jamestaggart4, lichess.org, 2020.

2.d4 e5

3.a3 ed4!? 4.Nf3 d5=.

3.c3 e4 4.d5 f5 (4...Bg7 5.f3=) 5.Qd4 (5.Nh3 h6 6.Na3 Nf6+=) 5...Qf6= 6.Qc4 (6.Be3 Bd6 7.Qd2+=) 6...c6.

3.de5 Bg7 4.e3 Nc6 5.f4 Nb4 6.c3 gf4 7.ef4+= Nc6 8.Bc4 d6 9.Nf3= de5 10.Qd8 Nd8 11.fe5 Bg4 12.Nbd2 Ne6 13.0–0+= 0–0–0 14.h3 Bh5 15.Ne4 Re8 16.Be3 Bg6 17.Nc5 Nd8 18.Rae1 Ne7+= 19.Bg5 Ndc6 20.Bf6+/– Bf6 21.ef6 Nf5 22.Bb5 Ng3 23.Re8+= Re8 24.Rf2 Ne4 25.Bc6 bc6 26.Re2 Nf6 27.Re8 Ne8 28.Ne5 Bb1 29.a4+/– Nd6 30.Nc6 a6 31.Na6 Ne4 32.c4 Bd3 33.Ne5 Be2 34.Nb4 f6 35.Nec6 ½–½. Woelfelschneider,Peter – Osthus,Reinhard, TT–04.11 TSC, 2002.

3.a3 d5

4.de5 Bg7 5.Bb2 Nc6 6.Nc3 Be5 7.b5 Na5 8.Nf3+= Bg7 9.e3 g4 10.Nd4 Ne7 11.Bd3 Ng6 12.Rb1 Ne5 13.Nde2 h5 14.Nf4 c6 15.Nce2 h4 16.0–0 c5 17.Nc3 Nac4 18.Bc4 Nc4 19.Ba1 d5 h3= 20.Qd5 Qd5 21.Ncd5+= Ba1 22.Ra1 hg2 23.Rfd1 Rb8 24.Kg2 Bf5+= 25.Nf6 Ke7 26.N6d5 Kf8 27.Nc3 Bc2=+ 28.Rdc1 Bb3 29.Ne4 b6 30.Rc3 Na5 31.Rb1 c4 32.Nd2 Re8 33.Ne2 Re5 34.Nd4 Kg7 35.Kg3 Reh5 36.Kg4 Rh2 37.N2b3 cb3 38.Kf3 R8h5 39.Ke2 R2h4 40.Kd3 Rh2 41.Rc7 Rf2 42.Ra7 b2 43.Rd7 Kf8 ½–½. Schulz,Hans_Juergen – Osthus,Reinhard, TT–04 TSC, 2003.

4.de5 Bg7 5.Bb2 Nc6 6.c4 Be6 7.cd5 Bd5 8.Nc3+=.

4.de5 Bg7 5.Bb2 Nc6 6.c4 Nge7 7.Nf3 g4 8.cd5 Qd5 9.Qd5 Nd5 10.b5 Na5 11.Nfd2+/– Be6 12.e4 Nb6 13.Bc3 Na4= 14.Ba5 Be5 15.Nc3 Nc3 16.Rc1 Na4 17.Nc4 Bf4 18.Rc2 0–0–0= 19.g3 Bg5 20.h3 b6 21.Bb4 h5 22.Rh2 h4 23.hg4 hg3 24.Rh8 gf2 25.Kf2 Rh8 26.Kg3 Rh1 27.Kg2 Rh4+= 28.Be2 Bg4 29.Nd6+/– ½–½. Poschmann,Hans – Osthus,Reinhard, TT–04 TSC, 2002.

4.de5 Bg7 5.Bb2 Nc6 6.Nf3!?+=.

4.de5 Bg7 5.Bb2 f5+=.

4.de5 Bg7 5.Nf3 f6 6.ef6 Qf6 +/–.

3.a3 e4

4.c4 h6 5.Nc3 Nf6 6.Qc2 Qe7+=.

3.de5 Bb4

4.c3 Be7 5.e4=.

2.d4 e6

3.a3 b5 4.e4 h5 (better is 4...Bb7!?+=) 5.Bb5+– a6 6.Bd3 d6 7.Ne2 Bg7 8.0–0 Bb7 9.Be3 Nd7 10.Nd2 f5 (better is 10...c5+–) 11.ef5 ef5 12.Bf5 Qf6 13.Ng3 h4 (13...g4 14.Nde4 Qf8 15.Ng5+–) 14.Nh5 Qh6 15.Ng7 Qg7 16.c4 0–0–0 17.b5 a5 18.c5 dc5 19.dc5 Ne7 20.Bg4 Kb8 (20...Rhe8 21.c6 Nc6 22.bc6 Bc6 23.Rc1+–) 21.c6 Bc6 (21...h3 22.cb7 hg2 23.Re1+–) 22.bc6 Nc6 (22...Nb6 23.Rb1 Nc6 24.Bb6 cb6 25.Rb6 Ka7 26.Rc6+–) 23.Rb1 Ka8 (23...Nb6 24.Bb6 cb6 25.Rb6 Kc7+–) 24.Qe2 Nb6 25.Qa6 Na7 26.Bf3 c6 (26...Rd5 27.Bd5 c6 28.Bc6 Kb8 29.Qb6 Qb7 30.Qb7) 27.Bc6 Kb8 28.Qb6 Qb7 29.Qb7 1–0. Baumann,Heinz – Krueger,Ulf, remoteschach.de, 2003.

3.a3 Nf6 4.Bg5 h6 5.Bh4 (5...Be7 6.e3+/–) 1–0. Taulien,Hans_Juergen (2225) – Von Reinbaben,Markus (1820), remoteschach.de, 2004.

3.b5 d5 4.Nf3 Be7 5.e3 a6 6.ba6 Na6+=.

3.a3 d5

4.e3 h5 5.Be2 g4 6.g3 (6.h3 g3 7.Nf3 Nf6=) 6...f5 (6...Nf6 7.Nc3=) 7.h3= Nf6 (7...Bg7 8.Nc3=) 8.Nc3 a6 (better 8...Bh6=) 9.f4?? (better 9.hg4 fg4 10.Bd3+=) 9...gf3 10.Bf3 Nc6 11.Nge2 b5 (11...Ne4!?=+) 12.Nf4+= Rg8 (12...Bd6 13.Bb2+=) 13.Nh5 (13.Bh5 Ke7 14.Rg1 Bh6+–) 13...a5 (better 13...Bd6=) 14.0–0?? (better 14.Nb5 Nh5 15.Bh5 Kd7 16.c4+–) 14...ab4–/+ 15.Nb5 Ba6?? (15...Nh5!? 16.Bh5 Kd7–/+) 16.Nc7 Qc7 17.Nf6 Kf7 18.Ng8 Kg8?? (18...Qg3 19.Bg2 Bf1 20.Qf1 Kg8=) 19.Bd2?? (better 19.Rf2!? Bc4 20.a4+–) 19...Qg7?? (better 19...Qg3!? 20.Bg2 Bf1 21.Kf1 Ra3=+ (worse 21...ba3 22.c4=)) 20.Be1 (20.Rf2!? ba3 21.g4 Bc4+–) 20...ba3 21.Ra3?? (better 21.Be2+–) 21...Ba3–+ 22.g4? (22.Be2 Be2 23.Qe2 Bd6–+) 22...Rf8 (better 22...Bf1 23.Kf1 Qh6–+) 23.Kh1?? (23.Be2 fg4 24.Rf8 Bf8 (24...Qf8?! 25.Ba6 gh3 26.Qg4 Qg7 27.Qg7 Kg7 28.Kh2+=) 25.Bg4 Ne7–+) 23...fg4 (better 23...Bf1 24.Bg2 fg4 25.Qg4 Qg4 26.hg4–+) 24.hg4?? (24.Rg1 Qh6 25.Rg4 Kf7 26.Kg2–+) 24...Bf1 25.Bf2 Bc4 (better 25...Bd6 26.Kg1 Bh3–+) 26.Qg1 Rf3 27.g5 Bd6 28.Bh4 (28.Qg4 Qh7 29.Qh4 Rh3 30.Kg1 Qf5 31.Qf4 Bf4 32.Bg3 Bg3 33.e4 Qf2) 28...Rh3 (28...Qh7 29.Qg2 Qh4 30.Qh3 Qh3 31.Kg1 Qh2) 29.Kg2 Rh4 30.Kf2 Qf7 31.Ke1 Qh7 (31...Bb4 32.c3 Bc3 33.Kd1 Qb7 34.Kc1 Bd3 35.Kd1 Qb1) 32.g6 Qh6 33.Kd2 (33.Qf2 Bb4 34.c3 Rh1 35.Kd2 Qg6 36.Qe2 Be2 37.Ke2 Qg2 38.Kd3 Rd1) 33...Bb4 34.c3 Rh2 35.Kc1 (35.Ke1 Bc3 36.Kd1 Qh5 37.Kc1 Bb2 38.Kb1 Qf5 39.e4 Qe4) 35…Rh1 (35...Rh1 36.Qh1 Qh1 37.Kc2 Ba3 38.e4 Qc1) 0–1. garabrut – 17jk39, gameknot.com, 2019.

4.Nf3 a5 5.ba5 g4+=.

4.Nf3 f6 5.e3+=.

4.Nf3 h6 5.e3 Nd7 6.c4 Ngf6+=.

2.d4 h6

3.h4 g4 4.e4 d5 5.ed5 Qd5 6.Bf4 (6.Nc3!? Qd6 7.Nge2+=) 6...Nc6=.

3.e4 d5

4.e5 Bg7 5.Nf3 g4 6.Nh4 a5+=.

3.e4 Bg7

4.Bb2 d6 5.c4 (5.Nf3 Nf6 6.Nbd2 g4=) 5...e6 (5...c5 6.Bc3 cd4 7.Bd4 Bd4 8.Qd4+=) 6.Be2 (6.Nc3 Ne7+=) 6...Nc6 (6...c5 7.b5=) 7.b5+= Nb4?? (better is 7...Nce7+=) 8.a3+– Bd7 (8...Nd5 9.ed5 ed5 10.Nf3+–) 9.ab4 Qe7 10.Nf3 (better is 10.Nc3+–) 10...0–0–0 (10...d5+–) 11.Ra7 Nf6 (11...Be8+–) 12.Ra8# 1–0. ashleysworld – pieeater, ChessWorld.net, 2009.

4.c3 d6 5.Nf3+=.

4.c3 e5 5.Be3 Nf6 6.de5+/– Ne4 7.f3 Nc3 8.Nc3 Be5 9.Rc1 c6 10.Kf2 d5 11.Bd4 Bf6? 12.Bf6 Qf6 13.Nd5! Qd6 14.Qe1 Kd8 15.Qc3 Rf8 16.Ne3 Bd7 17.Ne2 Re8 18.a3 b6 19.Nc4 Qe6 20.g3 Qd5 21.Qf6 Kc7 22.Nc3 Qe6 23.Qd4 b5 24.Nd6! Kd8 25.Bd3 c5 26.Nb7 Kc8 27.Nc5 Qb6 28.Nd5 Qd8 29.Nd7 Kd7 30.Nf4 Ke7 31.Rhe1 Kf8 32.Qh8# 1–0. nordlicht – Blacky, internet, 2003.

4.Ne2 d6 5.Nbc3+= c6 (5...Nf6 6.h4+=) 6.Rb1 (6.h4 gh4 7.Rh4 Na6+=) 6...Nf6 (6...a5 7.b5+=) 7.Ng3+/– Be6 8.Be2 Qc7 9.0–0 0–0 (9...Nbd7 10.f4 gf4 11.Rf4+/–) 10.f4 Nh7? (10...gf4!? 11.Bf4 Nbd7+/–) 11.Be3 (11.Nh5 f6+–) 11...f6? (better is 11...gf4 12.Rf4 a5+–) 12.d5 cd5 13.Nd5 Bd5 14.ed5 (14.Qd5 Kh8+–) 14...Nd7 15.Nf5 Nb6 (15...gf4 16.Bf4 (16.Ne7?! Kf7+=) 16...Ne5 17.Nh6 Bh6 18.Bh6+–) 16.Qd3 Rac8 (16...Kh8 17.c4 Rfd8 18.Rbc1+–) 17.Qe4 Rf7 (17...Rfe8 18.Qe6 Kh8 19.fg5 hg5 20.Bb5+–) 18.Bh5 Rcf8 (18...gf4 19.Bf4 Rcf8 20.Bh6+–) 19.Bb6 Qb6 20.Kh1 Qc7 (20...Qd8 21.Rbe1+–) 21.Rbe1 e5 (21...gf4 22.h4 e5 23.de6 Re7+–) 22.de6 Re7 23.Bg6 Bh8 (23...Kh8+–) 24.Nh6 Kg7 25.Bh7 f5 26.Nf5 Rf5 27.Qf5 1–0. forsetinn (2220) – marinscrofan (1810), gameknot.com, 2014.

4.Ne2 Nf6 5.Nbc3 d5 6.e5+=.

4.Nf3 a6 5.Bb2 b5 6.a3 Bb7 7.Ra2 Be4 8.Bd3 Bf3 9.Qf3 c6 10.d5 Bb2 11.Rb2 Nf6 12.0–0 Nd5 13.Bf5 e6 14.Bg4 Qf6 15.Qf6 Nf6 16.f3 h5 17.Bh3 Ke7 18.Rb3 Nd5 19.g3 f5 20.f4 gf4 21.gf4 a5 22.Re1 ab4 23.Bf5 ba3 24.Na3 Nf4 25.Nb1 Kf6 26.Be4 Na6 27.Rf1 e5 28.Nc3 d5 29.Bd3 h4 30.Be2 h3 31.Kf2 Ne2 32.Ke2 Ke6 33.Nd1 Nc5 34.Rbf3 d4 35.Rf6 Kd5 36.c3 Ra2 37.Ke1 Nd3 White king mated 0–1. salsa7 – DaTruth123 (1665), ChessWorld.net, 2015. (=1.d4 h6 2.e4 g5 3.b4 Bg7)

2.e3 e5

3.Bb2 d6 4.d4 Bg7 5.de5 Nc6 6.Nf3 Nb4=.

3.Nf3 e4 4.Bb2 Nf6 5.Ng5 d5 6.a3 h6 (6...h6 7.Nh3 Bd6+=).

2.e3 Nf6

3.Bb2 Bg7 4.d4 d5 5.Nf3 g4 6.Ne5 Bf5=.

3.d4 Rg8 4.Bd3 d6 5.e4 c5 6.c3 (6.bc5!? dc5 7.Ne2 cd4 8.Nd4=) 6...cd4.

2.e3 Bg7

3.Nc3 d5 4.d4 g4 5.Rb1 Nf6 6.Bd3 Nbd7=.

3.d4 d6

4.Bb2 Nf6 5.Nc3 0–0 6.Nge2 c5 7.dc5 dc5 8.Qd8 Rd8 9.g3 cb4 10.Rd1 Bd7 11.Nb1 Nc6 12.Nd2 Be6 13.h4 g4 14.h5 Ba2 15.h6 Bh8 16.Nf4 Nd5 17.Bh8 Kh8 18.Ra1 Nc3 19.Bd3 Ne5 20.Rh5 f6 21.f3 b3 22.Ne6 Nd3 23.cd3 Rd3 24.Nc4 b5 25.Nd2 Re3 26.Kf2 Re2 27.Kf1 Rd2 28.fg4 b2 29.Re1 Bc4 30.Kg1 Ne2 31.Kf2 Nc1 32.Ke3 b1Q 33.Kd2 Nb3 34.Kc3 Qe1 35.Kb2 Qc1 36.Ka2 Nd4 0–1. goatmilk – marekt, ChessWorld.net, 2005.

4.c3 e5 5.de5= Be5 6.Nf3 Bg4.

4.c3 Nf6!?+=.

2.e4 e5

3.a3 Bg7 4.c3 (4.Bc4 c6+=) 4...Nf6 5.Nf3 (5.d3 g4=) 5...Ne4 6.Qe2 Nd6 (6...d5 7.d3 g4 8.Ne5 Be5 9.de4=) 7.Ne5 (better is 7.d4 h6 8.de5+=) 7...f6?? (better is 7...0–0 8.d4 Re8=) 8.Nc6+– Qe7 (8...Kf7 9.Qh5 Ke6 10.Nd8 Ke7 11.Nb7 Bb7+–) 9.Qe7 1–0. crystal palace – Seimi Agus Eion, ChessWorld.net, 2005.

3.Bb2 d6 4.d4 Bg7 5.de5 Nd7 6.Nf3 g4 7.Nd4 Be5=.

3.a3 Nc6

4.Nc3=.

4.Bc4 Nf6 5.Nc3 h6 6.Nge2 a6+=.

2.e4 Nf6

3.Bb2 (--> 2.Bb2 Nf6 3.e4).

3.e5 Nd5

4.d4 d6 5.Bg5 Rg8 6.Nf3 Bg4=.

2.e4 Bg7

3.c3 a5 4.Qa4=.

3.c3 Na6 4.Bb2 (better is 4.d4!?+/–) 4...Nb4+= 5.Ba3 c5 (5...Nc6!?–/+) 6.d4= d5 7.cb4 cd4 (better is 7...Bd4 8.Nd2 Ba1 9.Qa1 Nf6+/–) 8.Nd2+/– de4 9.Qb1 (better is 9.Ne4 Qd5 10.Qd3+/–) 9...e3= 10.fe3? (better is 10.Ne4 ef2 11.Nf2+=) 10...de3–+ 11.Bb2?? (better is 11.Nb3 Bc3 12.Ke2–/+) 11…Qd2# 0–1. dolek9201 – josueaurelino, kurnik, 2012. (=1.e4 g5 2.b4 Bg7)

3.c3 d6 4.Bb5 Nd7 5.Bd7 Bd7= 6.Nf3 h6 7.g4 Bg4 8.h3 Bh5 9.Qe2 Qd7 10.Qe3 Nf6 11.d4 0–0–0 12.d5 Kb8 13.a4 e6 14.de6 fe6 15.Nd4 Bg6 16.f3 Rde8 17.Rg1 Rhf8 18.h4 Nd5 19.ed5?? ed5 20.Qe8 Re8 21.Kf2 Bb1 22.Rb1 Bd4 23.cd4 Qa4 24.hg5 hg5 25.Bg5 Qc2 26.Kg3 b6 27.Rgc1 Qf5 28.Bd2 Rg8 29.Kf2 Qh3 30.Ke3 Rg2 31.Rh1 Qg3 32.Rhf1 Qh2 33.Rh1 Re2 34.Kd3 Rd2 35.Ke3 Qf2 36.Kf4 Rd4 37.Kg5–+ Qg3 38.Kh5 Rf4 39.Rbg1 Qf3 40.Kh6–+ Rg4 41.Rf1 Qe3 42.Kh5 Qg5 0–1. crystal palace – Arran, ChessWorld.net, 2005.

3.c3 e6 4.Nf3 g4= 5.Nd4 h5 6.g3 b6 7.d3 (7...Bd4 8.cd4=). crystal palace – magne, ChessWorld.net, 2005.

3.c3 Nf6 4.f3 g4 5.fg4 Ne4=+ 6.Bd3 Ng5 7.h4 Ne6 8.Bf5 Nf4 9.Qf3 e6 10.Qf4+= ef5 11.gf5 Qe7 12.Ne2 d5 13.Rh3 0–0 14.Rg3 f6 15.Ba3 b5 16.h5 Re8 17.Re3 Qf7 18.Qg4 Kh8 19.Re8 Qe8 20.d3 Qe5= 21.d4 Qe7 22.Nd2 Bd7 23.Nb3 Na6+= 24.Nc5 Nc5=+ 25.bc5 Re8 26.Kd1 c6 27.Kc2?? Bh6 28.Re1? Qe3–+ 29.Bc1 Qf2 30.Bh6 Rg8 31.Qh4?? Qh4–+ 32.g3 Qh5 33.Bd2 Bf5 34.Kb3 a5 35.a4 Rb8 36.Nf4 ba4 37.Ka4 Bc2 38.Ka5 Qf7 39.Ka6 Qb7 40.Ka5 Ra8 0–1. crystal palace – Tricky.1, ChessWorld.net, 2005.

3.Bd3?? Ba1 4.Bc4 Nc6 –+.

3.Bd3?? e5 4.Nf3 (4.Bc4 Nf6 5.Nc3 Nc6=) 4...f6 (better is 4...g4!? 5.Ng1 d5+=) 5.0–0 g4 6.Ne5?? (better is 6.Nh4 d6 7.Be2+=) 6...fe5–/+ 7.Qg4 Qe7 8.Ba3 (8.Qh5 Kd8–/+) 8...Nf6 9.Qg6?? (9.Qe2–/+) 9...Qf7 (better is 9...hg6 10.Bb2 Bh6–+) 10.Qg3 (better is 10.Qf7!? Kf7 11.Bb2–/+) 10...d6–+ 11.b5 (11.Bb2 Rf8–+) 11...Nh5 12.Qe3 Qf4 (12...Nf4 13.Rc1–+) 13.Qe2 (13.Bc4 Qe3 14.fe3 Nf6–/+) 13...Qg4 (13...Qg5 14.Bc4–+) 14.Qe3 (14.Qg4 Bg4 15.Bc4 Nf4–/+) 14...b6 (better is 14...Nf4!? 15.Qg3 Qg3 16.hg3 Nd3 17.cd3 Be6–+) 15.Be2–/+ Qg6 16.Nc3 (16.Bh5!? Qh5 17.Qc3–/+) 16...Nf4–+ 17.g3 Ne6 (17...Bh6 18.Kh1 Bh3 19.Rg1 Ne2 20.Qe2–+) 18.Nd5 Bb7 19.Nc7?? (better is 19.Rae1–/+) 19...Nc7–+ 20.Bc4 Qh6 21.Qd3? Nd7 22.Bb3? Ne6 23.Bd6 Nec5 24.Bc5 Nc5 25.Qc4 Qd2 26.Qf7+– Kd8 27.Rad1 (27.Rad1 Bh6 28.Qf6 Kd7 29.Qh6 Qd1 30.Rd1 Kc8 31.Be6 Kb8 32.Qf6 Ne6 33.Qh8 Bc8 34.Rd7+–) 1–0. interloper – marysson, ChessWorld.net, 2010.

3.d4 Nc6 4.c3 h6 5.b5 Na5 6.h4 gh4 7.Rh4 c6 8.Qf3 d6 9.Qg3 Bf6 10.Rh5 cb5 11.e5 de5 12.de5 Nc4 13.ef6 Nf6 14.Rb5 Rg8 15.Qh4 Be6 16.Rb4 Nd6 17.Qh6 Nf5 18.Qh2 Qd5 19.Nf3 Rc8 20.Be2 Nd6 21.Ra4 Nde4 22.c4 Qd7 23.Ra7 Ng4 24.Qh7 Ngf6 25.Qh1 Ng4 26.Nbd2 Nef2 27.Qh7 Nf6 28.Qb1 Rg2 29.Qb7 Qb7 30.Rb7 N2g4 31.Bf1 Rg3 32.Nd4 Bd7 33.a4 Ne3 34.Bb2 Nfg4 35.Ke2 Ne5 36.a5 Nf1 37.Kf1 Bh3 38.Kf2 Rg2 39.Ke3 Rg3 40.N4f3 Nf3 41.Kf4 Nd2 42.Kg3 Bd7 43.Rh1 Kd8 44.Rh8 Be8 45.Ba3 Ne4 46.Kf3 Nd6 47.Bd6 ed6 48.Rf7 Ra8 49.Rff8 Kd7 50.Re8 Ra5 51.Rd8 Kc7 1–0. COMP – COMP, blitz, 2002.

3.d4 h6 4.Bc4 d6 5.c3 Nf6 6.Nd2 d5+=.

3.c3 d5

4.Bb5 c6 5.Bd3 de4 6.Be4 Na6 7.Nf3 h6 8.Na3 Nb4 9.Qb3 Nd3 10.Bd3 Qd3 11.Bb2 g4 12.Nh4 Bf6 13.g3 Qe4 14.Kd1 Qh1 15.Kc2 Qe4 16.Kd1 Bh4 17.c4 Bf6 18.Bf6 Nf6 19.Rc1 Nd7 20.c5 Ne5 21.Rc3 1–0. crystal palace – jelgava, ChessWorld.net, 2005.

4.d4 de4 5.Bg5 h6=.

4.d4 h6 5.ed5 Qd5 6.Be3 Bf5=.

3.d4 d5

4.e5 h6+=.

4.Bg5 de4

5.c3 h6 6.Bf4 Nf6+=.

5.c3 h6 6.Bh4 a5 7.Qa4 Bd7 8.b5=.

5.c3 h6 6.Bh4 Bf5 7.Ne2+= Bf6 8.Ng3 Bg6 9.Bf6 Nf6 10.Nd2 Rg8 11.Nc4 Nbd7 12.Qd2 h5= 13.Qg5 e6 14.Rc1 Qe7= 15.Be2 0–0–0 16.h3 Rh8 17.Qa5 Kb8 18.Bd1 h4 19.Nf1 Nd5 20.Nfe3 Qg5 21.Bb3 Rhg8 22.Rc2=+ f5 23.Nd5 ed5 24.Qd5 Qg2 25.Rf1 Nf6 26.Qe5 Rgf8 27.Na5 Be8 28.f3 Qh3–+ 29.Qh2 Qg3 30.Qg3 hg3 31.f4 Bb5 32.c4 Bd7 33.d5 b6 34.Nc6 Bc6 35.dc6 Rd3 36.Rg2 Rfd8 37.Bc2 Re3 38.Re2 Rf3 39.Rh1 Rf4 (40.Rh6 Ng4–+) 0–1. Baer,Werner – Osthus,Reinhard, TT–04 TSC, 2002.

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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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