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TESTA Release 2020-07-07
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4

(...)

1...b6 (--> 1.b4 b6).

1...d6 (--> 1.b4 d6).

1...g5 (--> 1.b4 g5).

1...g6 (--> 1.b4 g6).

1...a6

2.a3 a5 3.b5 Nf6 4.Nf3 d5 5.Bb2 e6 6.e3 Nbd7 7.d4 Nb6 8.Ne5 =.

2.a3 d5 (--> 1.b4 d5 2.a3 a6).

2.a3 d6 3.Bb2 Nf6 4.Nc3 g6 5.d4 Bg7 6.Nf3 0-0 7.e4 Bg4 8.Be2 Nc6 9.0-0 e5 10.de5 (10.d5 Bf3 11.Bf3 Nd4+=) 10...de5= 11.h3 Be6 (11...Bf3 12.Bf3 a5 13.b5 Qd1 14.Bd1=) 12.Ng5 (12.Qd8 Rad8 13.Bd3 h6=) 12...Bd7 13.Nf3 Be6 14.b5 (14.Qd3 Nh5=) 14...ab5+= 15.Nb5 Qe7 16.c4? (better is 16.Ne5!? Ne5 17.Be5=) 16...Ne4–/+ 17.Qc2 Nd6 (17...Nc5 18.Rad1–/+) 18.Rad1 Rfd8 0–1. Leclerc,Sophie – Inving,Yugi, FICGS, 2008.

2.a3 e6 3.Bb2 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a6).

2.a3 f5 3.g3 e6 ½–½. Cubas,Jo (2430) – Zambrana,O (2385), Bled, 2002.

2.a3 h5 3.Bb2 e5 (3...d6 4.e4=) 4.e3 (4.Be5 d6 5.Bb2 Nf6+–) 4...a5 (4...d6 5.d4 e4 6.d5=) 5.d4 (5.Be5 Nc6 6.Bb2 ab4+=) 5...ed4= 6.ed4 (6.Qd4!? ab4 7.ab4 Ra1 8.Ba1=) 6...ab4=+ 7.ab4 d5?? (better 7...Bb4 8.c3 Ra1 9.Ba1 Be7=+) 8.c4 (8.Ra8!? Nd7 9.Qe2 Be7+–) 8...dc4?? (8...Bb4!? 9.Nc3 Ra1 10.Qa1 dc4–+) 9.Bc4 (9.Ra8 Nd7 10.Qe2 Be7 11.Qc4 Ngf6+–) 9...b5?? (better 9...Bb4 10.Nc3 Ra1 11.Ba1 Nf6=+) 10.Bb5+– c6 1–0. pat_cash87 – SabriCoronel12, lichess.org, 2020.

2.a4 a5 3.b5 c6 4.Bb2 f6 (4...cb5 5.ab5 d5 6.e3=) 5.e4+= Ra6?? (better 5...e6+=) 6.ba6+– ba6 (6...Na6 7.Ba6 ba6 8.d4+–) 7.Bc4 (7.d4 e6+–) 7...e6 8.Qh5 g6 9.Qf3 (9.Qe2 d5 10.Bb3 Bg7+–) 9...d5 10.ed5 (10.Bb3 Nd7+–) 10...cd5 11.Bb3 Nc6 (11...Nd7 12.d4+–) 12.Nh3 (12.Ne2 Bd6+–) 12...Nb4 (12...Bc5 13.0-0+–) 13.0-0 (better 13.c3 Nc6 14.c4+–) 13...Nc2 (13...e5+–) 14.Bc2 Qb6 (14...e5 15.Bb3+–) 15.Bf6 Nf6 16.Qf6 Rg8 17.Ng5 Qc7 (17...Qa7 18.Rc1 Qe7 19.Bg6 Kd7 20.Qf4 Rg6 21.Rc7 Kd8 22.Nf7 Qf7 23.Qf7+–) 18.Ne6 (18.Rc1 Qe7 19.Bg6 hg6 20.Rc8 Kd7+–) 18...Qf7 (18...Qe7 19.Qe7 Ke7 20.Nf8 Rf8+–) 19.Qd8 1–0. GuestMHMG – GuestSNVZ, freechess.org, 2018.

2.a4 b5?? (--> 1.b4 b5 2.a4 a6??).

2.a4 d5 3.Nf3 Nc6 4.c3 Bg4 5.d4 Bf3 (5...Nf6!?=+) 6.ef3= h6 7.b5 ab5 8.Bb5 e6 9.0-0 Bd6 10.Re1 Qh4 11.g3 Qh5 (11...Qf6 12.Na3=) 12.Na3 Nge7 13.c4 (13.Rb1 0-0+=) 13...Bb4 14.Re3 0-0 15.c5 (15.Rb3 dc4 16.Nc4 Rfd8=) 15...Qg6 (15...Nf5 16.Rd3 Ncd4 17.Rd4–/+) 16.Bd3 (16.Nc2!? Ba5 17.Rb3+=) 16...Qf6=+ 17.Nc2 Bc3 18.Ra2 (better 18.Bh7!? Kh7 19.Rc3–/+) 18...Bd4 19.Nd4 Nd4 (19...Qd4!? 20.Rb2 Rfb8 21.Bc2–+) 20.Bb2–/+ Nec6 21.Bb5 e5 22.Raa3 Qg6 (22...Nf5 23.Re1 d4–/+) 23.Bd4? (better 23.Bc6 Nc6 24.Be5=) 23...Nd4–+ (23...ed4?! 24.Re1=+) 24.Bf1 (24.Re5 Nb5 25.Rb3 Na7 26.Rb7 Rab8 27.Rb8 Rb8 28.Qd5 Nc6–+) 24...f6 (24...Qc2 25.Qa1 Qc5 26.Re5–+) 25.Kg2? (25.Ra2 Ra5–+) 25...Ra5 (25...Qc2 26.Qd3 Qc5 27.Ra2–+) 26.Qc1 (26.Rab3 Rb8–+ (26...Ra4?! 27.Rb7 Ra2 28.Rc7–/+)) 26...Qf5 (26...Nc2!? 27.Rab3 Ne3 28.Qe3–+) 27.Bd3 Qd7 28.Qc3 Ra4 29.Bg6 (29.Ra4 Qa4 30.f4 e4 31.Re4 de4 32.Bc4 Ne6 33.Be6 Kh8–+) 29...Rc4 (better 29...Nb5 30.Qb2 Ra3 31.Ra3 Na3 32.Qa3–+) 30.Qa5 (30.Qb2 Qc6 31.Ra7 Nb5–+) 30…c6 0–1. Amun (1860) – NestorVive (1800), lichess.org, 2019.

2.a4 Nf6 (--> 1.b4 Nf6 2.a4 a6).

2.a4 g6 3.Bb2 Nf6 4.e4 Bg7 5.e5 Nh5 (better 5...Nd5!?–/+) 6.Nh3= Bh6 (6...f5!?=) 7.g4+– Nf4 8.Nf4 (8.g5!? Nh3 9.gh6+–) 8...Bf4+= 9.Qf3 Bh6 10.Bc4 0-0 11.0-0 e6 (11...Nc6 12.b5 ab5 13.ab5 Ra1 14.Ba1=) 12.d4 (12.b5 Bg7=) 12...c6 (better 12...d5!? 13.Be2 f5=) 13.Qh3 Bg7 (13...Bf4 14.Nc3 d5 15.ed6 Qd6 16.Ne4+–) 14.f4 (14.Qg3!?+–) 14...d5+= 15.Bd3 Nd7 (15...a5 16.b5+=) 16.Nd2 b5 (16...a5!? 17.b5 c5+=) 17.ab5+– cb5 18.Nb3 (18.Bb5 Qb6 19.Be2 Qb4+–) 18...Bb7 (18...Nb6!?+–) 19.Na5 Qb6 (19...Qc7 20.f5 Rfe8 21.c3+–) 20.Nb7 (20.Kg2 f5 21.gf5 ef5+–) 20...Qb7+– 21.Kh1 (21.f5 Rfc8+–) 21...Nb6 22.f5 ef5 (22...Rfe8 23.f6 Bf8 24.Bc1+–) 23.gf5 Rfe8? (better 23...Nc4 24.Bc1 Qc6+–) 24.e6+– Nc4 (24...fe6 25.f6 Qf7 26.fg7 Qg7+–) 25.ef7 Qf7 26.fg6 Qf1 1–0. DEFFM – willanazcf, freechess.org, 2019.

2.Bb2 c6 (--> 1.b4 c6 2.Bb2 a6).

2.Bb2 e5 (--> 1.b4 e5 2.Bb2 a6).

2.Bb2 f5 3.a4 c6 (3...e6!?=) 4.e3 (4.Nf3 Nf6=) 4...d5 (4...Nf6 5.Nc3=) 5.Be2 (5.Qh5 g6 6.Qh4 Nf6+=) 5...Nf6= 6.c4 (6.Nc3 e5=+) 6...Be6 (better 6...e6!?=) 7.Nf3+= dc4 8.0-0 Bf7 (8...Bd5 9.Na3+=) 9.Ne5 (9.Na3!?+–) 9...Nbd7+= 10.Nf7 (10.Nc4 e6+=) 10...Kf7 11.Bc4 Ke8? (better 11...e6+=) 12.Qb3+– Qc7 13.a5 (13.Nc3 e5+–) 13...e5 (13...Qd6 14.Bf7 Kd8 15.Nc3+–) 14.d4 (14.Nc3 Bd6+–) 14...Bd6 15.h3 (15.Nd2 e4 16.f4 Ke7+–) 15...Rf8 (15...ed4!? 16.Bd4 Bh2 17.Kh1 Be5+–) 16.Be6 (16.Nc3 ed4 17.ed4 Rh8+–) 16...g6 17.Rc1 (17.de5 Be5 18.Nc3 Ke7+–) 17...Ke7 18.d5 (18.Nd2 e4+–) 18...Rae8? (18...Rfe8 19.Nc3 Nf8 20.b5 Ne6 21.de6=) 19.dc6 (better 19.Nd2!?+–) 19...bc6+– 20.Nd2 (20.Nc3 Rb8 21.Ba3 e4+–) 20...e4 (20...Rb8 21.Bc3+–) 21.Bd4 (21.Bd7 Qd7 22.Nc4 Qe6+–) 21...Nd5?? (better 21...Rb8 22.Bd7 Nd7+–) 22.Bd5+– (22.Bd5 Ne5 23.Nc4 Nc4 24.Rc4+–) 1–0. DEFFM – GuestLDWT, freechess.org, 2020.

2.Bb2 h5 (--> 1...h5 2.Bb2 a6).

2.b5 ab5 3.Bb2 b4 4.a3 Nf6 (4...ba3 5.Ra3 Na6 6.e4–/+) 5.ab4=+ Ra1 6.Ba1 e6 7.Bf6 Qf6 8.e3 (8.c3!?=+) 8...Bb4–/+ 9.Nf3 (9.c3 Be7–/+) 9...Bd6 (9...d5 10.c3 Bd6 11.d4–/+) 10.Nc3 0-0 11.Ne4 (11.Nb5 e5=+) 11...Qe7–/+ 12.Ng3 (12.Nd6 Qd6 13.d4 b6–/+) 12...f5 (12...b6 13.Bd3–/+) 13.Bd3 (13.Bc4 f4 14.ef4 Bf4–/+) 13...f4 (13...b6 14.c3–/+) 14.Ne4 g6 (14...Ba3 15.ef4 Rf4 16.Qe2–/+) 15.Nd6 (15.h4 Bb4 16.ef4 d5=+) 15...cd6 (15...Qd6 16.h4 fe3 17.de3 Qb4 18.Kf1=) 16.ef4 (16.0-0 d5=+) 16...Rf4 17.0-0 (17.Qa1 Nc6=+) 17...Rf8 (17...Nc6 18.Qe2=+) 18.Nd4 (18.Qe2 Nc6=) 18...Nc6 (18...d5 19.Be2=+) 19.Ne2 (19.Nb3 d5=+) 19...e5 (19...Qg5 20.c3=+) 20.Ng3 (20.Bc4!? Kg7 21.c3=+) 20...d5–/+ Black plans e4 21.f3 (better 21.c3–/+) 21...e4 (better 21...Qc5!? 22.Kh1 Nb4–/+) 22.fe4= de4 (22...Nb4!?=) 23.Rf8+= Qf8 24.Be4 (better 24.Bc4 Kg7 25.Ne4=) 24...d5 (better 24...Qc5 25.Kh1 d5=) 25.Bd5+– Kg7 26.Qa1 Kh6 (better 26...Qf6 27.Qf6 Kf6+–) 27.Qa4?? (better 27.Qc3 Qd6 28.Qe3 Kg7 29.c4+–) 27...Qc5–+ 28.d4 Qd5 29.Ne2? (29.c3 b5 30.Qa8 Ne7–+) 29...Kg7 (better 29...Bg4 30.Ng3 b5–+) 30.Qb4?? (30.c3 b5 31.Qc2 Na5–+) 30...Qe6 (better 30...Nb4 31.Kf2 Bg4–+) 31.Qd2 Qf7 (31...Qc4 32.c3–+) 32.Nf4 White prepares d5 (better 32.d5 Ne7 33.c4–+) 32...Be6?? (32...b5 33.c3–+) 33.Ne6? (better 33.d5 Bf5 34.dc6 bc6 35.c3=) 33...Qe6–+ 34.d5 Qf6?? (better 34...Qd6–+) 35.Qc3?? (better 35.dc6 bc6 36.g4=) 35...Qc3 36.dc6 (36.Kf1 Qc4 37.Ke1 Nd4 38.Kd2 Qc2 39.Ke3 Nf5 40.Kf3 Qd3 41.Kf2 Qd2 42.Kf3 Qe3 43.Kg4 h5) 36…Qe1 0–1. rock303fanyoye (2325) – TwelveTeen (2430), lichess.org, 2017.

2.b5 d5 (--> 1.b4 d5 2.b5 a6).

2.c3 b6 3.a4 Bb7 4.f3 e6 5.e4 e5 6.d4 Bd6 7.d5 h6 8.Bd3 Nf6 9.Ne2 Be7 10.Ng3 d6 11.Nf5 0-0 12.0-0 Bc8 13.Nh6 gh6 14.Bh6 Re8 15.Qd2 Nh7 16.f4 ef4 17.Qf4 Bf6 18.Nd2 Nd7 19.Rf2 Ne5 20.Be2 Re7 21.Raf1 Ng6 22.Qe3 Bg5 23.Bg5 Ng5 24.Qg5 Re5 25.Qh6 Bd7 26.Bh5 Qf8 27.Qf8 Rf8 28.Bg6 fg6 29.Rf8 Kg7 30.R8f7 1–0. martenkaa91 – anakondak234, kurnik, 2012.

2.c3 e5 3.Bb2 d5 4.e3 Nc6 5.Be2 Bd7 6.Na3 Nf6 7.Nf3 Be7 8.0-0 0-0 9.Nc2 h6 10.d4 e4 11.Nd2 Nh7 12.f3 ef3 13.Nf3 Bf5 14.Nce1 Be4 15.Bd3 Ng5 16.Ng5 Bg5 17.Be4 de4 18.Qe2 b5 19.g3 Ne7 20.Ng2 Nd5 21.c4 bc4 22.Qc4 Be3 23.Kh1 Bg5 24.Bc1 Bc1 25.Rac1 e3 26.Rf5 c6 27.Nf4 Nf4 28.Rf4 Re8 29.Re1 Qe7 30.d5 e2 31.dc6 Rac8 32.a3 Qe6 33.Qc3 Qd5 34.Kg1 Rc6 35.Qd4 Qd4 36.Rd4 Rc3 37.Rd2 Ra3 38.Rde2 Re2 39.Re2 1–0. jarmuta – soloxte, kurnik, 2012.

2.c3 Nf6 3.e3 g6 4.b5 Bg7 5.Qb3 0-0 6.Nh3 e6 7.Ng5 d5 8.h4 Nbd7 9.g4 Ng4 10.Be2 Ngf6 11.h5 Nc5 12.Qb4 Nce4 13.hg6 Ng5 14.gh7 Kh8 15.Bd3? Nf3 16.Kd1 Ne4 17.Be4 de4 18.d4 Qd5 19.Nd2 Ng5 20.Ba3 ab5 21.c4 bc4 22.Nc4 b5 23.f4 Nf3 24.Ne5 Ra4 25.Qb3 Ne5 26.fe5? c5 27.Bc5?? Qb3 28.ab3 Ra1 29.Ke2 Rh1 30.Bf8 Bf8 31.Kf2 Kh7 32.Kg2 Rb1 33.Kg3 Rb3 34.Kf4 Bh6 35.Ke4 Re3# 0–1. solidsteel – swtbjgrl, Live Game Caissa's Web, 2005.

2.c3 g6 3.Bb2 Bg7 4.Nf3 e6 (4...Nf6 5.e3=) 5.e4+= Ne7 6.Bc4 (6.d4 d5 7.Bd3 Bd7+=) 6...0-0 7.0-0 b5 (7...d5 8.ed5 ed5 9.Be2=) 8.Bb3 (8.Bd3 Nbc6 9.Qc2 f5=) 8...Bb7 9.d3 (9.Qe2 a5 10.d4 ab4 11.cb4 f5=) 9...d5 (9...Nbc6 10.Qe2=) 10.e5 Nd7 (10...Nbc6 11.d4=) 11.d4 a5 12.a3 ab4 13.ab4 Ra1 14.Ba1 f6 15.ef6 Nf6 16.Re1 Bc8 17.Nbd2 c6 18.Bb2 Rf7 (18...Qd6 19.Bc1+/–) 19.Ne5 Rf8 20.Ndf3 Nd7 21.Qa1 Ne5 22.Ne5 Be5 23.Re5 Bd7 24.Bc1 Qe8 25.Bh6 Rf7 26.Qe1 Nf5 27.Bg5 Kg7 28.g4 Ne7 29.Qe3 Ng8 30.Bh4 h6 31.f4 Qf8+= 32.Bg3 Nf6 33.h3 Ne4 34.Bh2 g5 35.Re4+/– de4 36.Qe4 Exerts pressure on the isolated pawn 36...gf4 37.Qe5 Rf6 38.Bf4+= Qf7? 39.Bc2?? Kg8= 40.g5?? Rf4–+ 41.Bd3 hg5 42.Qb8 Kg7 43.Qe5 Qf6 (43...Qf6 44.Qd6 Be8 45.Qc7 Bf7 46.Qc6 Rf3–+) 0–1. bratek55 (1615) – vasilem (1645), kurnik, 2011.

2.c3 h6 3.e3 (3.e4 Nc6=) 3...d6 (3...e5 4.d4 e4 5.d5=) 4.Nf3 Bd7 (4...e5 5.d3=) 5.d4+= Nf6 6.Bd3 g5 7.h3 b5 (7...d5 8.Ne5+=) 8.Bb2 c6 (8...Bg7 9.a4 ba4 10.e4+=) 9.Nbd2 (9.a4 Bg7+=) 9...d5 (9...a5 10.ba5 Qa5 11.e4+=) 10.Qc2 (better is 10.a4+/–) 10...e5? (better is 10...a5!?+=) 11.de5+– Nh7?? (better is 11...Nh5+–) 12.Bh7 Rh7 (12...Bg7 13.a4+–) 13.Qh7 f5 (13...a5+–) 14.Qh6 Bh6–+ 15.0-0-0 Qe7 16.g4 fg4 17.hg4 Qf8 18.Rh6 Qh6 19.a3 Bg4 20.Kb1 Bf3 21.Nf3 Qh3 22.Nd4 Nd7 23.Ka1 Ne5 24.Nc2 Nf3 25.Re1 Ne1 26.Ne1 Qe3 27.fe3–/+ 0-0-0 28.Bc1 a5 29.Kb2 ab4–/+ 30.ab4 d4?? 31.ed4 Rd4?? 32.cd4+– c5 33.dc5 g4 34.Ng2 Kb8 35.Kb3 g3 36.Be3 Ka8 37.Nf4 Ka7 38.Nd3 g2 39.Nf4 g1Q 40.Bg1 Ka6 41.Ne2 1–0. Fournier,Frederic (1660) – trombondevaras (1610), Active, 2011.

2.Nc3 e5 3.e4 (3.Nf3 Nc6 4.a3 d5+=) 3...Bb4+= 4.Bc4 (4.Nd5 Nc6 5.Nb4 Nb4+=) 4...b5 (better is 4...Nf6–/+) 5.Bf7?? (better is 5.Bd5 Nc6 6.Nf3+=) 5...Kf7–+ 6.Qf3 (6.Nf3 Nc6 7.a4 Bb7–+) 6...Nf6 7.Nge2 (7.Nd5 Ba5–+) 7...Bc3 (7...d6 8.h3–+) 8.Nc3 (8.Qc3 d5 9.Bb2 Re8 (worse is 9...Ne4 10.Qe5 Nf6 11.0-0–+) 10.ed5 Nd5–+) 8...Bb7 (8...Nc6 9.0-0–+) 9.0-0 g6 (9...Nc6 10.Qh3–+) 10.d4 (10.Qe3 Kg7–+) 10...ed4 11.Nd5 Bd5 12.ed5 h6 13.Qb3 d6 14.Bb2 Kg7 15.Bd4 Kh7 16.Rae1 Rf8 17.Qe3? Nd5 18.Qd3 Nb4 19.Qb3 N4c6 20.Qc3 Nd7 21.Qg3?? Nd4–+ 22.Qe3 Nc2 23.Qh3 Ne1 24.Re1 c5 25.f4 Rf4 26.Qd3 Qh4 27.g3 Rg4 28.Re4 Qg5 29.Rg4 Qg4 30.Qd6 c4 31.Qe7 Kh8 32.Qf7 Nc5 33.Qf6 Kg8 34.Qd6 Ne4 35.Qd5 Kg7 36.Qa8 c3 37.Qa7 Kf6 38.Qa6 Kg5 39.Qb5 Qf5 40.h4 Kg4 41.Qe2 Qf3 42.Qf3 Kf3 43.Kh2 c2 44.Kh3 c1Q 45.h5 gh5 46.g4 Qh1# 0–1. interloper – Eries, ChessWorld.net, 2011.

2.Nc3 g6 3.e4= Bg7 4.Nge2 e5 5.Rb1 Nc6 6.d3 Nd4 7.Be3 d6 8.a4 b6 9.b5 ab5 10.Nb5 c5 11.c4 Ne7 12.Nec3 0-0 13.g4 Bd7 14.Bg2 Bb5 15.ab5 Qd7 16.0-0 Ra3 17.Rc1 Rfa8 18.g5 R8a5 19.Kh1 f5 20.ef5 Nef5 21.Bd5 Kh8 22.Bd4 cd4 23.Nb1 Ra2 24.Nd2 Ne7 25.Be4 d5 26.Bf3 Rb2 27.Rb1 Rba2 28.Nb3 R5a3 29.Nc1 Ra1 30.Nb3? Rb1–+ 31.Qb1 Qh3?? 32.Bg2=+ Qg4 33.cd5 Qd7 34.Qb2 Qd6 35.Qb1 Bf8?? 36.Nd2+/– Rc3? 37.Ne4+– Qb4 38.Qb4 Rd3 39.Ra1 Kg7 40.Qc4 Rc3 41.Nc3 Nf5 42.Qc7 (42...Be7 43.Qe5 Kf7 44.d6 Nd6 45.Bd5 Ke8 46.Ra8 Nc8 47.Rc8 Kd7 48.Qe6) 1–0. deepaktnj – rla, internet, 2007.

2.c4 d5 3.cd5 Qd5 4.Bb2 Nf6 5.e3 (5.Nf3 Nc6=+) 5...Bd7 (5...e5 6.Nf3 e4 7.Nd4=+) 6.Nc3 (better 6.Nf3=) 6...Qh5?? (6...Qd6 7.a3=) 7.Be2?? (better 7.Qh5 Nh5 8.Nd5+–) 7...Qg6=+ 8.Bf3 Nc6 9.a3 (9.Nge2 Nb4 10.Nf4 Qc2–/+) 9...e5 (better 9...Ne5 10.Rb1 Bf5 (worse 10...Nf3 11.Nf3 Qg2 12.Rg1–/+) 11.Bb7 Ra7–+) 10.Ne4?? (better 10.d3=) 10...Ne4–+ 11.Be4 (11.Ne2 Bd6–+) 11...Qe4 (11...Qe4 12.Nf3 Bd6–+) 0–1. GuestGDCR – GuestMXNB, freechess.org, 2016.

2.c4 d6 3.Bb2 Nd7 4.e3 e6 5.Nf3 h6 (5...Ngf6 6.Be2=) 6.Be2 Be7 (6...Ngf6 7.0-0=) 7.0-0 (better 7.Bg7 Rh7 8.Bc3+–) 7...g5?? (better 7...Ngf6+=) 8.Bh8+– Bf6 9.Bf6 Qf6 10.Nc3 b6 11.Nd4 Bb7 12.Bf3 Bf3 13.Qf3 (better 13.Nf3!? Ne7+–) 13...Qf3 14.Nf3 (worse 14.gf3 Ne5+–) 14...e5 (14...g4 15.Ne1+–) 15.d4 f6 (15...f5 16.de5 de5 17.e4+–) 16.de5 fe5 17.Nd5 0-0-0 18.a4 Rf8 (18...c6 19.Nc3+–) 19.c5 (better 19.a5 Kb7+–) 19...bc5 20.bc5 (20.b5 ab5 21.ab5 Kb7+–) 20...Nc5 21.Rfb1 g4 22.Nd2 h5 (22...Kd7 23.Ra3+–) 23.Rb4 Nh6 (23...Kd7 24.Ne4 Ne4 25.Re4+–) 24.Rab1 Nf5 (24...Kd7+–) 25.Rb8 (25.Rb8 Kd7 26.Rf8+–) 1–0. aravind555 (1800) – KottanErmittelt (1830), lichess.org, 2020.

2.d3 d5 3.Nf3 a5 4.b5 c6 5.bc6 bc6 6.Ba3 a4 7.Nc3 Nf6 8.Ne5?? Nbd7?? 9.f4 d4–/+ 10.Ne4 Ne4 (11.de4 Ne5 12.fe5 Qa5 13.Qd2 Qe5–+) 0–1. joeuno – Wildwild, internet, 2005.

2.d3 e6 3.c3 Nc6 4.Nf3 Nf6 5.g3 Be7 6.Bg2 d5 7.Bf4 Bd7 8.Nbd2 Bd6 9.Bd6= cd6 10.0-0 0-0 11.e4 de4 12.Ne4 d5 13.Nf6 Qf6 14.d4 Rac8 15.a4 Rc7 16.Qb1 Rfc8=+ 17.Qb2 Qh6 18.b5 Na5=+ 19.Ne5 Nc4 20.Nc4 Rc4 21.ba6 ba6 22.Rfc1 Qg5 23.a5 g6 24.f4 Qd8 25.Bf1 R4c6 26.Rcb1 h5 27.Ra3 h4 28.Bd3 Kg7 29.Rb3 hg3 30.hg3 Qa5 31.Ra1 Qd8 32.Ba6 Ra8 33.Bd3 Rcc8 34.Ra8 Ra8 35.c4 Qa5 36.c5 Qe1 37.Bf1 Ra4 38.Qf2 Qf2 39.Kf2 Rd4 40.Rb6 Rd2 41.Ke3 Rc2 42.Kd4 Rc1 43.Be2 Kf6 44.Ra6 Ke7 45.g4 f6 46.Ra7 Kd8 47.Ra8 Kc7 48.Ra7 Kc6 ½–½. Cirulis,Ilmars (1775) – Leclerc,Sophie, FICGS, 2008.

2.d4 b5 3.c3 Bb7 4.Nf3 (4.a4 Nf6=) 4...e6= 5.Qb3 (5.e3 Nf6=) 5...Be7 6.a4 c6 (6...Nf6 7.e3=) 7.a5 (7.e4!?+=) 7...Nf6 8.e3 0-0 9.Nbd2 Ne8 (9...d6 10.c4=) 10.Ba3 (10.Bd3 d6+=) 10...Kh8 (10...d6 11.Bd3=) 11.Rd1 Qc8 (11...d6 12.c4+=) 12.c4 f5 13.c5 f4 (13...Nf6 14.Bd3+=) 14.Be2 fe3 15.Qe3 (15.fe3 Nf6+–) 15...Nf6+= 16.Ne5 Nd5 17.Qd3 (17.Qg3 Nf4+=) 17...Bf6 (17...Nf4 18.Qe4=) 18.Ndf3 (18.Ne4!?+–) 18...Nf4= 19.Qe4 Ng2 (worse 19...Ne2 20.Qe2 Qe8 21.Bc1+–) 20.Kf1 Be5 (20...d5 21.Qg4 Be5 22.Kg2=) 21.Ne5 (better 21.Bd3 Rf5 22.Ne5+–) 21...Nf4= 22.Rg1 Qd8 (22...Rf5!?=) 23.Bc1+= Nd5?? (better 23...Ne2 24.Ke2 Qf6+=) 24.Bd3+– Rf5 (24...Nf6 25.Qh4 Qe8 26.Bg6+–) 25.Qg4 (better 25.Nf7! Kg8 26.Nd8+–) 25...Rf7 (25...Qf6 26.Bf5 ef5+–) 26.Nf7 (26.Nf7 Kg8 27.Qg7) 1–0. Aleks – Akrapovik (1625), lichess.org, 2020. (=1.d4 a6 2.b4 b5)

2.d4 Nc6 3.d5 Nb4 4.a3+/– e6 5.ab4 Bb4 6.c3 Bc5 7.de6 fe6 8.e3 Qf6?? 9.Qh5 g6 10.Qc5 c6 11.Nd2 Ne7 12.Ne4 Qf7 13.Nd6 (13...Kf8 14.Nf7 Kf7 15.Qe5+–) 1–0. pozarski (2090) – kanitha, GameColony.com, 2002.

2.d4 d5 (--> 1.b4 d5 2.d4 a6).

2.d4 d6 3.h4 (3.Nc3 Nf6=) 3...h6 4.Nf3 Nf6 5.Nc3 Nc6 6.Ne5?? (6.d5 Ne5= (6...Nb4? 7.a3+–)) 6...d5 (better is 6...de5 7.d5 Nb4–+) 7.f4 (better is 7.Bf4!?=) 7...Bf5–/+ 8.a3 Ne4 9.g3?? (better is 9.Nc6 bc6 10.Ne4 Be4 11.e3+=) 9...Nc3–+ 10.Qd3 (10.Qd2 Ne4 11.Qe3–+) 10...Bd3 11.cd3 Nd4 12.Bb2 Ndb5 (better is 12...Nc2 13.Kd2 Na1 14.Bh3–+) 13.a4 d4 (better is 13...Qd6 14.ab5 Qb4 15.Ba3–+) 14.e3 (14.ab5 Qd5 15.Kf2 Qb5 16.Bc3 dc3–+) 14...de3 (better is 14...Qd5!? 15.Rh2 Qb3 16.ab5 de3 17.Rc1–+) 15.ab5 Nb5 16.d4 Nd4 17.Bd4 Qd4 18.Rd1 Qb4 19.Ke2 e6 (better is 19...Qe4 20.Rg1 e6–+) 20.Bg2 Bc5 (better is 20...Qb2 21.Kf3 Qf2 22.Ke4–+) 21.Bb7 Ra7 (21...Qb7 22.Nf3 Qb2 23.Rd2 ed2 24.Nd2 Rd8 25.Rd1 Qc2 26.Kf3 Qd1 27.Kg2 Rd2 28.Kh3 h5 29.f5 Qg4) 22.Rb1?? (better is 22.Bc6 Ke7 23.Rd7 Kf8 24.Rd8 Ke7 25.Rd7 Kf8 26.Rd8 Ke7 27.Rd7=) 22...Qa3 (22...Qd2 23.Kf3 Rb7–+) 23.Ra1 Qb2 24.Kf1 Qf2 0–1. prakeshdesai (1785) – valerypavlovich (2140), net–chess.com, 2015.

2.e3 g6 3.Bb2 f6 4.Nf3 Bg7 5.Be2 b6 6.0-0 Bb7 7.h3 e5 8.d3 Ne7 9.c4 d5 10.cd5 Nd5 11.a3 Qe7 12.e4 Nf4 13.Bc1 Nd7 14.Bf4 ef4 15.Nc3 0-0-0 16.b5 a5 17.a4 f5 18.Re1 Bc3 19.Rf1 Ba1 20.Qa1 fe4 21.de4 Qe4 22.Re1 Qf5 23.Nd4 Qf7 24.Nc6 Rde8 25.Bf3 g5 26.Na7 Kb8 27.Nc6 Kc8 28.Na7 Kb8 29.Nc6 Bc6 30.Bc6 Re1 31.Qe1 Nc5 32.Qd1 Na4 33.Qa4 Rd8 34.Qe4 Qb3 35.Ba8 Qb5 36.Qb7 1–0. joaquimbage – jlvin, kurnik, 2012.

2.e4 c6 3.d4 e6 4.Ba3 Nf6 5.Bd3 d6 6.c3 Be7 7.h3 b5 8.Bb2 e5 9.Ne2 Bb7 10.Ng3 Nbd7 11.a3 Nb6 (11...0-0 12.Qf3=+) 12.Qc2 ed4 13.Nf5 (13.cd4 Na4=) 13...Bf8 (13...c5 14.bc5 (14.Ng7? Kf8–+; 14.cd4? c4–+) 14...dc5 15.e5=+) 14.0-0 (14.cd4 c5 15.dc5 dc5 16.bc5 Rc8+=) 14...g6 15.Nd4 (15.Ng3!? dc3 16.Nc3=) 15...c5–/+ 16.Nf3 c4 17.Be2 Be4 18.Qd2 Be7 19.Nh2 (19.Nd4 0-0–/+) 19...0-0 20.Bc1 Re8 21.Bf3 Bd3 (21...d5 22.Re1–+) 22.Re1 (22.Ba8!? Qa8 23.Re1=+) 22...d5–+ 23.Qe3 (23.Ng4 Ne4 24.Qe3 Bf8–+) 23...Bd6 24.Qd2 Bh2 (24...Qc7 25.Ng4 Ng4 26.Bg4–+) 25.Kh2 Qd6 26.g3 Nbd7 27.a4 Ne5 28.Bg2 Ne4 29.Be4 (29.Re4 de4 30.Be4 Ng4 31.hg4 Re4 32.ab5–+) 29...Be4 30.Re3 Nf3 (31.Rf3 Bf3 32.ab5 Qb6 33.ba6 Re2 (33...Ra6?! 34.Ra6 Qa6 35.Qf4–+) 34.Qe2 Be2–+) 0–1. astrop – rla, internet, 2007.

2.e4 Nc6 3.a3 g6 (3...Nf6!?=+) 4.Bb2 Nf6 5.e5 Ng8 6.Nf3 Bg7 7.d4 e6 8.c4 b6 9.d5 (9...Nce7 10.de6 fe6 11.Nbd2+/–) 1–0. miehnekort – kashee_dashing, Yahoo, 2005.

2.e4 d6 3.h3 Nf6 4.Nc3 g6 (4...e5 5.Nf3=+) 5.Nf3 Bg7 6.e5 (better is 6.d4!?=) 6...de5–/+ 7.Ne5 0-0 8.Be2 (better is 8.d4–/+) 8...b5 (better is 8...Nd5 9.Nd5 Be5–/+) 9.0-0 Nbd7 (9...Nd5!? 10.Nd5 Be5=) 10.Nc6+= Qe8 11.Rb1 (11.Bf3 Bb7+=) 11...Bb7 12.Nd4 (12.Na5!? Bd5 13.a4+/–) 12...c5=+ 13.bc5 Nc5 14.Nf3 (14.Bf3 Qd7 15.Bb7 Qb7=+) 14...e5 (better is 14...Qd7–/+) 15.d4? (15.a4 e4 16.Nh2 Qe7 17.ab5 ab5 18.Nb5 Nd5=) 15...Rd8 (better is 15...ed4 16.Nd4 Rd8–+) 16.Bd2?? (better is 16.Ba3 Ne6 17.Ne5 Nd4 18.f4=+) 16...ed4–+ 17.Nb5 ab5 18.Bb5 Qe6 19.Bb4 (19.Ba5 Ra8 20.Bb4–+) 19...Qd5 (19...Nfe4 20.Bc5 Nc5 21.a4–+) 20.c4? (better is 20.Qd4 Nfe4 21.Qe3–+) 20...Qf5 21.Nh4 (21.Ba5 Nfe4 22.Nh4 Qf6–+) 21...Qe4 22.Nf3 Rfe8 23.Be8+– Re8? 24.Bc5 Ba6 25.Re1 Qa8 26.Re8 Qe8 27.Qd4 Nh5 28.Qd6 Bc4 29.Re1 Be6 30.Ng5 Nf6 31.Ne6 fe6 32.Re6 Qf7 33.Qd8 Bf8 34.Rf6 (34...Qf6 35.Qf6 Bc5 36.Qe6 Kg7 37.Qe5 Kf7 38.Qc5+–; 34.Re7 Qe7 35.Be7 Nd7 36.Qd7 Be7 37.Qe7 g5 38.g4 h6 39.a3 Kh8 40.Qf7 h5 41.gh5 g4 42.h6 gh3 43.Qg7) 1–0. lustylady – kneelinsec, Live Game Caissa's Web, 2006.

2.e4 e6 3.a3 d5 4.e5 c5 5.bc5 Bc5 +=.

2.Nf3 Ra7 3.Bb2 Nc6 4.a3 Nd4?? (better is 4...d6=) 5.Bd4+– b6 6.g3 Bb7 7.Bg2 Be4 8.0-0 Rb7 9.d3 b5 (9...Bc6+–) 10.de4 Rb6 (10...e6 11.e5+–) 11.Bc5 (better is 11.Bb6 cb6 12.a4 ba4 13.Ra4 Qc8+–) 11...Rc6 12.Ne5 Rc5 13.bc5 c6 14.c4 d6 (14...Qc7 15.Qd4+–) 15.cd6 Qd6 16.Qd6 ed6 17.Nc6 Be7 18.cb5 Nf6 19.ba6 Ng4 20.Nd2 (better is 20.a7 Kd7 21.Nb8 Ke6+–) 20...Rg8 21.a7 Kd7 22.Nb8 Ke8 23.a8Q Bd8 24.Qc6 Kf8 25.Nd7 (better is 25.Qd6 Be7 26.Nd7 Ke8 27.Qc6+–) 25...Ke8 26.Nf6 (26.Ne5 Kf8 27.Qd6 Be7 28.Qb8 Bd8 29.Qd8) 26...Kf8 (26...Ke7 27.e5 Ne5 28.Ng8 Kf8 29.Qd6 Ke8 30.Qe5 Kd7 31.Qb5 Kc7 32.Rfc1 Kd6 33.Qd5) 27.Ng8 (27.Qe8) 27...Kg8 28.Qe8 1–0. linakip – jelon97, kurnik, 2011.

2.Nf3 b5 3.Nc3 Bb7 4.d4 e6 5.g4 Bb4 6.Bb2 Qf6 7.g5 Qf5 8.Bg2 h6 9.Nh4 Bc3 10.Bc3 Qg5 11.Bb7 Ra7 12.Nf3 Qg2 13.Rg1 Qh3 14.Be4 d5 15.Rg3 Qh5 16.Bd3 g5 17.Bb4 g4 18.Ne5 Qh2 19.Ng4 Qh1 20.Kd2 Qd1 21.Kd1 Nc6 22.Bc5 Rb7 23.Nh2 f5 24.Nf3 Nf6 25.Kd2 Ne4 26.Ke3 Ng3 27.fg3 Nd8 28.Ne5 Rg8 29.Kf3 c6 30.Rh1 Rh7 31.g4 fg4 32.Kg3 Rhg7 33.Rh6 Nf7 34.Re6 Kd8 35.Bb6 Kc8 36.Nc6 Kb7 37.Na5 Kc8 38.Bf5 Kb8 39.Re7 Nd6 40.Bc7 Ka8 41.Bd6 Re7 42.Be7 Rg7 43.Bd8 Kb8 44.Be6 b4 45.Bd5 Rd7 46.Nc6 Kc8 47.Be6 a5 48.Ba5 b3 49.ab3 Black resigned 1–0. radiomadman – themuttsknutts, ChessWorld.net, 2011. (1.Nf3 a6 2.b4 b5)

2.Nf3 b6 3.Nc3 c6 4.e4+= d6 5.Be2 e6 6.0-0 f6 7.Re1 h6 8.Nd4 c5?? 9.Bh5+– Ke7 10.Nd5! ed5 11.ed5 Kd7 12.Ne6 b5 13.Nd8 Kd8 14.Re8 (14…Kc7 15.Rf8+–) 1–0. pierre – paphik, internet, 2009.

2.Nf3 d5 (--> 1.b4 d5 2.Nf3 a6).

2.Nf3 e5 3.Ne5 Bb4 4.c3 (4.Nd3 Be7=) 4...Be7 5.Qb3 (5.e4 d6 6.Ng4 Bg5=) 5...d5 6.e4 Nf6 (6...f6 7.Nf3 de4 8.Qa4 Nc6 9.Qe4=) 7.ed5 Qd5 8.Qd5 Nd5 9.Bc4 (9.d4 Be6=) 9...Be6=+ 10.Bd5 (10.d4 Nd7=+) 10...Bd5 11.0-0 (11.d4 Nd7–/+) 11...Nd7 12.Nd7 (12.Re1 Kd8=+) 12...Kd7–/+ 13.Ba3 (13.d3 c5–/+) 13...Bf6 14.Bb2 (14.Bc5!?–/+) 14...Rae8 15.d4 (15.f3 Re2–+) 15...Re2 16.Ba3 (16.Bc1 Ba2 17.Nd2 Bd5–+) 16...a5 (16...Rhe8!? 17.h3–+) 17.Rd1 Rhe8 18.Kf1?? (18.Nd2–+) 18...Bc4 19.Kg1 (19.g3 Rd2 20.Kg1 Rd1 21.Kg2 Bf1 22.Kf3 Rd3 23.Kf4 Bh3 24.Be7 Re7 25.g4 g5 26.Kf5 Rf3) 19...Re1 20.Re1 Re1 0–1. mpopp – pcmvr, net–chess.com, 2017.

2.g3 d5 3.a3 b5 (3...Nc6 4.Nf3=+) 4.Bg2 (4.Nc3 Nc6 5.Bg2 Nf6=) 4...c6 (4...a5 5.Bb2=) 5.d4 (5.Nf3 a5+=) 5...Nf6 (5...a5 6.Nf3+=) 6.e3 (6.Nf3 a5 7.ba5 Qa5 8.Nbd2 Nbd7=) 6...Bg4= 7.Ne2 e6 (7...h5 8.Nbc3=) 8.0-0 (8.f3 Bf5=) 8...Bd6 (8...Nbd7 9.f3 Bh5 10.Nf4=) 9.f3 (9.e4 de4 (9...Ne4? 10.f3+–) 10.Nd2 Nbd7=) 9...Bh5 10.g4 (10.Nbc3!?+=) 10...Bg6=+ 11.h3 (11.Nbc3 0-0=) 11...0-0 (11...a5–/+) 12.f4 (12.h4!? h6 13.Nf4=+) 12...h6 (12...a5 13.g5 Nh5 14.ba5 Qa5 15.Bd2–/+) 13.Nbc3 (better 13.Bd2–/+) 13...Ne4 (13...a5!? 14.ba5 Ra5–/+) 14.Ne4 (14.f5 Nc3 15.Nc3 Bh7=) 14...de4 (14...Be4 15.Be4 de4 16.Ng3=+) 15.Nc3 (better 15.f5 ef5 16.gf5+=) 15...Re8?? (better 15...f5=+) 16.Ne4+– Qh4?? (better 16...Be4 17.Be4 Nd7+–) 17.Nd6+– Rd8 18.f5 (18.Nb7 Re8+–) 18...ef5 19.Nf5 Bf5 20.Rf5 Ra7 (20...Nd7 21.Bc6 Rac8 22.Bg2+–) 21.e4 (21.a4 g6 22.Rc5 Re7+–) 21...Nd7 (21...a5 22.Bb2 ab4 23.ab4+–) 22.e5 (22.g5 g6 23.Rf4 Qg5 24.Rf7 Qh4+–) 22...a5 (22...g6 23.Rf4 Ne5 24.Qe2+–) 23.Bb2 (better 23.Bd2 Nb6 24.Be1+–) 23...Ne5 (23...g6 24.Rf2 Ne5 25.ba5 Re7 26.de5 Rd1 27.Rd1 Kh7+–) 24.Re5 f6 (24...Re7 25.Qe1 Qe1 26.Rae1 Re5 27.Re5 ab4 28.ab4+–) 25.Re6 Rc7 (25...ab4 26.ab4 Ra1 27.Qa1+–) 26.ba5 c5 27.a4 (27.Qe2 Rcc8 28.d5 c4+–) 27...b4 28.Qe2 cd4 29.Rd1 (better 29.Re8 Kh7 30.Rd8 f5+–) 29...Qg3 30.Rd4 Rd4 31.Bd4 b3 32.c3 (32.Re8 Kf7 33.Qe6 Kg6 34.h4 Rc6 35.Qf5 Kf7 36.Qd7 Kg6 37.h5 Kg5 38.Qg7 Kh4 39.Bf6 Rf6 40.Qf6 Kg4 41.Rg8 Kh5 42.Rg3 bc2 43.Bf3) 32...Rb7 33.c4 (33.Re8 Kf7 34.Qe6 Kg6 35.Rf8 Qf4 36.Qe8 Rf7 37.Qf7 Kh7 38.Qe8 Qc1 39.Bf1 Qf1 40.Kf1 b2 41.Rh8) 33...Rb8 34.Rb6 (better 34.Rf6 gf6 35.Qe6 Kf8 36.Qf6 Ke8 37.Qg6 Ke7 38.Bf6 Kd6 39.Bh4 Kc5 40.Bg3 Re8 41.Qe8 Kb4 42.Bd6 Kc4 43.Qc6 Kd3 44.Bb4 b2 45.Qe4) 34...Rb6 35.ab6 (35.Qe8 Kh7 36.ab6 b2 37.Bb2 h5 38.b7 Qe3 39.Qe3 hg4 40.hg4 g6 41.Qe7 Kh6 42.Bf6 g5 43.Qg7) 35...Kh7 36.a5 (36.Qe4 Kg8 37.Qe8 Kh7 38.a5 b2 39.Bb2 h5 40.b7 Qe1 41.Qe1 Kh6 42.b8Q hg4 43.Qh4 Kg6 44.Qe8 Kf5 45.Qg4) 36...Kg6 37.b7 (37.Qe8 Kh7 38.b7 b2 39.b8Q Qe1 40.Qe1 h5 41.Qee8 b1Q 42.Qb1 f5 43.Qf5 Kh6 44.Qeh5) 37...Kf7 38.a6 b2 (38...h5 39.a7 b2 40.b8Q b1Q 41.Qb1 Qf3 42.Bf3 Kf8 43.a8Q Kf7 44.Bd5) 39.Qb2 (39.b8Q b1Q 40.Qb1 Qe3 41.Qe3 g6 42.Qb7 Kf8 43.Bf6 h5 44.Qg7) 39...h5 40.gh5 Qe1 41.Bf1 Qg3 (41...Qg3 42.Qg2 Qe1 43.Qg6 Ke7 44.Qg7 Ke6 45.b8Q Qh4 46.Qc8 Kd6 47.Qcd7; 41...g5 42.b8Q Qe7 43.a7 Qe4 44.Q2b7 Qb7 45.Qb7 Ke6 46.a8Q g4 47.hg4 Kd6 48.Qaa6) 0–1. Benreguia,Frederic – Jerez,Miriam, FICGS, 2013.

2.g4 e5 3.a3 c5 4.Nf3 (4.Nc3 Nc6–/+) 4...cb4 (4...e4 5.Ng1–/+) 5.a4? (5.ab4!? e4 6.Nd4+=) 5...Bc5 (better is 5...Nc6 6.Bb2 d6–+) 6.Ne5? (better is 6.d4 ed4 7.Nbd2–/+) 6...Ba7 (better is 6...Bd4 7.Nf7 Kf7–+) 7.Bg2? (7.e3 d6 8.Nd3 Qh4+=) 7...Qb6 (better is 7...Bd4 8.Nf7 Kf7–+) 8.Bd5?? (better is 8.e3 Ne7 9.Bb2=) 8…Qf2# 0–1. Pekin Dragons – Eries, ChessWorld.net, 2011.

2.h4 e5 3.Bb2 e4 (3...Nc6 4.a3=+) 4.c4 Bb4?? (better 4...Nf6 5.a3 a5=+) 5.Bg7+– d5 6.cd5 Qd5 7.a3 Ba5 (7...Bc5 8.Bh8 Bf5 9.Nc3+–) 8.Nc3 Qf5 (8...Bc3 9.dc3 (9.Bc3?! f6+=) 9...Ne7 10.Bh8+–) 9.Bh8 Nc6 (9...Nd7 10.Qa4 Bc3 11.Bc3+–) 10.e3 (better 10.Qb1 Bc3 11.Bc3 Qe6+–) 10...Ne5 (10...Nge7 11.Nge2 Bc3 12.dc3+–) 11.Qa4 Bd7 12.Qe4 Qe4 13.Ne4 Bd2 (13...Bc6+–) 14.Nd2 Ng6 15.Bb2 N8e7 16.Rc1 c6 (16...Bc6 17.Ngf3+–) 17.h5 Nf8 18.Ne4 Ne6 (18...Nd5 19.Bc4 Be6 20.Bd5 Bd5 21.Nf6 Kd8 22.Nd5 cd5 23.h6+–) 19.Nf6 Kd8 20.Nh7 Nc5 21.Rc5 b6 22.Rc1 b5 23.h6 Bf5 24.Nf6 Ng6 25.Rh5 Bd7 26.Rd1 Ra7 27.h7 Ke7 28.Bd3 c5 29.Bg6 c4 (29...Bc6 30.h8Q Bd7 31.Re5 Be6 32.Qd8) 30.h8Q b4 (30...fg6 31.Qg7 Kd8 32.Rd7 Rd7 33.Qd7) 31.Re5 Be6 32.Qd8 1–0. Pereira – Marekt, internet, 2020.

2.a3 b5

3.Bb2 (--> 1.b4 b5 TESTB.HTM 2.Bb2 a6 3.a3).

3.Bb2 Bb7 4.e3 Nf6 5.Be2 e6 6.Nf3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.Be2).

3.Bb2 Nc6 (--> 2.Bb2 Nc6 3.a3 b5).

3.c3 Bb7 4.e3 c5 (4...e5!?=) 5.bc5+= Nc6 6.d4 Qa5 (6...Nf6 7.Nf3+=) 7.Nf3 Nd4 (7...Nd4 8.ed4 Nf6+–). Fournier,Frederic (1905) – Frankiz, Active Blind, 2008.

3.c3 c6 4.d4 d5 5.e3 e6 6.f4 f5 7.g3 g6 8.h4 h5 9.a4 Bb7 10.Ne2 Nf6 11.Na3 (11.Bg2 a5 12.ab5 cb5 13.ba5 Ra5 14.Ra5 Qa5=) 11...Ne4 12.Bg2 Nd7 (12...a5 13.ba5 ba4 14.Qa4 Ra5 15.Qd1=+) 13.Be4 (better 13.Nc2=) 13...a5?? (better 13...fe4 14.Bb2 Bg7=+) 14.Bd3 ab4 15.cb4 Bb4 16.Bd2 Bd6 17.Nc2 (17.a5!? Bc7+–) 17...ba4+– 18.Na3 (18.0-0 0-0+–) 18...Ba6 19.Ba6 Ra6 20.Nb1 a3 21.Qb3 0-0 22.Na3 c5? (better 22...Qa8 23.Bc1 Qa7=) 23.0-0+– c4 24.Nc4 (24.Qc3 Rb6+–) 24...Ra1+– 25.Ra1 Qc7?? (better 25...dc4 26.Qc4 Re8+–) 26.Nd6+– Qd6 27.Bb4 Qb6 28.Nc3 (28.Qa4 Rf7+–) 28...Rb8 29.Rb1 Kh7 30.Qa4 Qc7 31.Qa3 Qc4 32.Kf2 (better 32.Qa7 Qc6 33.Bc5 Rb1 34.Nb1+–) 32...Rb6 (32...Kg8 33.Qa5+–) 33.Qa7 (better 33.Bf8 Nf8 34.Rb6+– (34.Qf8?! Rb1 35.Qe7 Kh6 36.Qg5 Kg7 37.Nb1 Qc2 38.Kf3 Kf7=)) 33...Qc8 34.Na4?? (better 34.Bc5 Rb1 35.Nb1+–) 34...Qc2 35.Kf3 Qe4 36.Ke2 Qg2?? (better 36...Qc2 37.Kf3 Qe4 38.Kf2 Qc2 39.Kf3=) 37.Kd3+– Qe4 38.Ke2 (better 38.Kd2 Kg8 39.Qd7 Qb1 40.Qe8 (40.Nb6?! Qb4 41.Ke2 Qb6=) 40...Kh7 41.Qf7 (41.Nb6?! Qb4 42.Kc2 Qb6+–) 41...Kh8 42.Qf8 Kh7 43.Nb6 Qb2 44.Ke1 Qc1 45.Ke2 Qb2 46.Kf3+–) 38...Qc2 39.Kf3 Qe4 40.Ke2 Qg2?? (40...Qc2 41.Kf3=) 41.Kd3 Qe4 42.Ke2 ½–½. wilfredshunk – antonio37, gameknot.com, 2018. (=1.a3 a6 2.b4 b5)

3.c3 c6 4.d4 d5 5.e3 e6 6.f4 f5 7.g3 g6 8.h4 h5 9.a4 Nf6 10.Bb2 Nbd7 (10...Ne4 11.Rh3=) 11.Ne2 (11.ab5!? cb5 12.Bb5+=) 11...Ng4 12.Qd2 (12.ab5 cb5 13.Bc1 Ndf6=) 12...Nb6–/+ 13.Nc1 (13.ab5 Nc4 (13...cb5?! 14.Na3=; 13...ab5?! 14.Ra8 Na8 15.Bg2=) 14.Qc1 cb5–/+) 13...Nc4 (13...Na4 14.Nd3–/+) 14.Qe2 (14.Bc4 bc4 15.Ne2 Bd6=+) 14...Nce3 15.Bh3 ba4 16.Bg4 Ng4 17.Nd3 Bb7 (17...Bg7 18.Ra4 0-0 19.0-0=+) 18.Ne5 (18.Qe6 Qe7 19.Qe7 Ke7 20.Ra4 Re8=) 18...Bd6 (better 18...Ne5!? 19.Qe5 Rh7 20.Ra4 Bd6–/+) 19.Ng6= Rg8?? (better 19...Rh6 20.Qe6 Qe7 21.Qe7 Be7 22.Ne7 Re6 23.Kd2 Ke7 24.Ra4 Rg8=) 20.Ne5 (20.Qe6 Be7 21.Qg8 (21.Qe7?! Qe7 22.Ne7 Ke7=) 21...Kd7 22.Qg7+–) 20...Nf6 21.c4? (better 21.Rg1=+) 21...Ne4?? (better 21...Bb4 22.Bc3 Bc3 23.Nc3 Rg3–+) 22.Qh5 Kf8 (22...Rg6 23.Qg6 Ke7 24.Qf7) 23.Qf7 1–0. wilfredshunk – alanmp, gameknot.com, 2018. (=1.a3 a6 2.b4 b5)

3.c3 c6 4.d4 d5 5.e3 e6 6.f4 f5 7.g3 g6 8.h4 h5 9.Nf3 Bb7 10.Ne5 Ne7 11.Nd2 c5 (11...Nd7 12.Nb3+=) 12.dc5 (better 12.bc5 Nbc6 13.a4 Ne5 14.fe5 (worse 14.de5 d4=+) 14...ba4 15.Qa4 Bc6 16.Qa5+–) 12...a5? (better 12...Bg7+=) 13.Bb5+– Nbc6 14.Ndf3 Qc7? (14...Bg7 15.0-0+–) 15.c4 (15.Ng5 Bc8 16.Ngf7 Rh7 17.Nd6 Kd8 18.Nef7 Kd7+–) 15...ab4? (better 15...Bg7 16.Bb2 ab4+–) 16.Qb3?? (better 16.Nd4 Rh6 17.Ne6+–) 16...Nc8?? (better 16...Bg7 17.cd5 Nd5+=) 17.Ng6 (better 17.cd5 ed5 18.Qd5+–) 17...Rg8 18.Nge5 Bc5?? (better 18...N8a7 19.Nc6 Bc6 20.ab4 Nb5 21.Ra8 Ba8 22.cb5 Rg3+–) 19.Nd3 (19.cd5 N8e7 20.dc6 Ra5+–) 19...N8e7?? (19...Qg7 20.cd5 Qa1 21.dc6 Ba6 22.Ba6 Ra6+–) 20.Nc5+– Rg3 21.Ne6 Qd6 22.Nfg5 Kd7 (22...dc4 23.Qc4 Ra3 24.Ra3 ba3 25.Ng7 Kd7 26.Nh5+–) 23.c5 Qe6 (23...Qb8 24.Rb1 Kc8 25.ab4+–) 24.Ne6 Ke6 25.Kf2 Rg4 (25...Rgg8 26.Bb2 ba3 27.Ra3+–) 26.Bb2 Ra5 (26...ba3 27.Ra3 Rag8 28.Be2+–) 27.a4 (27.Be2 Ba6 28.Bg4 Bc4 29.Bf5 Nf5+–) 27...Kf7 (27...Ba6 28.Qd3 Bc8 29.Rag1+–) 28.Rhg1 (28.Bc6!? Bc6 29.Qb4 Ra8+–) 28...Rh4 (28...Ke6 29.Rg4 hg4 30.Re1+–) 29.Bc6 Nc6 (29...Rh2 30.Kg3 Rb2 31.Qb2 Bc6+–) 30.Qd5 Ke7 (30...Ke8 31.Qe6 Kd8 32.Rg8 Kc7 33.Qd6) 31.Rg7 (31.Rg7 Ke8 32.Qg8) 1–0. alanmp – wilfredshunk, gameknot.com, 2018. (=1.a3 a6 2.b4 b5)

3.c3 c6 4.d4 d5 5.e3 e6 6.f4 f5 7.g3 g6 8.h4 h5 9.Nf3 Bd6 10.Ne5 Be5 11.de5 a5 12.Bb2 Qb6 13.Nd2 (better 13.Qd4 Nd7 14.Bg2=) 13...Qe3–/+ 14.Qe2 Qg3 15.Qf2 Qg4?? (better 15...Qf2 16.Kf2 Ne7–/+) 16.Rg1 (16.Be2!? Ne7+–) 16...Qg1 (16...Nd7 17.Qh2+–) 17.Qg1 Nd7 (17...Ne7+–) 18.Qg6 Kd8 (18...Kf8 19.Qe6 Ne7 20.Nf3+–) 19.Qe6 (better 19.Qg7 Ngf6 20.Qh8 Ne8 21.Be2+–) 19...Ne7 20.Bh3 (20.Nf3 Rg8+–) 20...Rf8 (20...Rg8 21.Qf7 Nf8 22.Nb3+–) 21.Qh6 c5 (21...Rg8 22.Qh5 Nb6 23.0-0-0+–) 22.e6 (better 22.Nb3 Ra6 23.Qh5 a4 24.Nc5 Nc5 25.bc5 Rc6+–) 22...Rg8 (22...Ra6 23.Kd1+–) 23.0-0-0 (better 23.ed7 Bd7 24.bc5+–) 23...Nf8 24.Re1 Ne6 (24...Ra6 25.Qh5 Re6 26.Re6 Ne6 27.Qf3 (worse 27.ba5 Nf4 28.Qf3 Nh3 29.Qh3 Rg1 30.Kc2 f4+–; 27.Bf5?! Rg1 28.Kc2 Nf4 29.Qh8 Rg8+–) 27...ab4 28.cb4 Rg1 29.Nf1 cb4 30.Bf6+–) 25.Qh5 (better 25.Re6 Be6 26.Qe6 cb4 27.Bf5 Ke8+–) 25...Nf4 26.Qf3 Nfg6 (26...Nh3 27.Qh3 Ra6 28.bc5+–) 27.bc5 (better 27.h5 Nh8 28.c4 Rf8 29.cd5 Bd7+–) 27...Nh4 (27...Ra6+–) 28.Qf4 Nhg6 29.Nf3 (better 29.Qd6 Bd7 30.c6 Nc6 31.Bf5+–) 29...Nf4–+ 30.Nd4 (30.Bf1–+) 30...Nd3 31.Kd2 Nb2 32.Kc2 (32.Bf1 Nc4 33.Bc4 bc4–+) 32...Nc4 33.Nb5 Bd7 (33...Rb8 34.a4–+) 34.a4 (34.Nd6 Ba4 35.Kb1 Rb8 36.Ka1 Rb3 37.Nc4 dc4–+) 34…Rc8 0–1. dejjr – wilfredshunk, gameknot.com, 2018. (=1.a3 a6 2.b4 b5)

3.c3 c6 4.d4 d5 5.e3 e6 6.f4 f5 7.g3 g6 8.h4 h5 9.Nh3 a5 10.Bb2 ab4 11.ab4 Ba6 (11...Ra1!? 12.Ba1 Nf6=) 12.Ng5= Nf6 13.Ne6 Qe7 14.Nf8 Qe3 15.Qe2 Ng4?? (better 15...Qe2 16.Be2 Rf8=) 16.Ng6 (16.Ne6 Qg3 17.Kd2 Kf7+–) 16...Rh6 17.Ne5 (better 17.Qe3 Ne3 18.Ne5 Nc2 19.Kd1 Na1 20.Ba1+–) 17...Re6?? (better 17...Qg3 18.Kd2 Qf4 19.Kc2 Re6+–) 18.Ng4 (better 18.Qe3 Ne3 19.Bd3+–) 18...Qg3 19.Nf2 Re2 20.Be2 Qe3 21.Na3 Ra7 22.Nh3?? (better 22.Nc2 Qg3 23.Bh5 Kd8 24.Rh3 Qg1 25.Ke2 Re7 26.Ne3+–) 22...Re7=+ 23.Rh2? (better 23.Ng1 Qg3 24.Kf1 Re2 25.Ne2 Qf3 26.Kg1 Qe2 27.Rh2 Qg4 28.Rg2 Qf4 29.Bc1=) 23...Qg3–+ 24.Rf2 Qh3 25.Nc2 (25.Kd1 Kd8–+) 25...Qh4 26.Bc1 Qg3 27.Kf1 h4 (better 27...Kd8–+) 28.Rg2? (28.Rf3 Qh2 29.Be3 h3–+) 28...Qh3 (28...Qg2 29.Kg2 Re2 30.Kh3 Rc2 31.Kh4 Rc3 32.Bd2–+) 29.Ne3 (29.Bh5 Kf8 30.Kg1–+) 29...Rg7 30.Kf2 (30.Rb1–+) 30...Re7 (better 30...Rg2 31.Ng2 Qg3 32.Kf1 h3 33.Bh5 Kd7–+) 31.Rg8 (31.Kf1 Re3 32.Be3 Qe3 33.Rg8 Kd7 34.Rb8 Qh3 35.Kg1 Qc3 36.Ra6 Qg3 37.Kh1 Qe1 38.Kh2 Qe2 39.Kg1 Qe3 40.Kh1 Qe4 41.Kg1 Qd4 42.Kg2 Qb4 43.Rg8–+) 31...Kf7–/+ 32.Rb8? (better 32.Rg5 Qh2 33.Rg2 Qf4 34.Bf3–/+) 32...Qg3–+ 33.Kf1 h3 (better 33...Qf4 34.Ke1 Qb8 (34...Re3?! 35.Be3 Qe3 36.Ra6 Qg3 37.Kd1 Qb8 38.Rc6–+) 35.Ra6 Qg3 36.Kd1 f4 37.Rc6 fe3 38.Bh5 Kg7 39.Rg6 Qg6 40.Bg6 Kg6–+) 34.Nd1?? (34.Bh5 Ke6 A) 35.Ra6?? h2 (35...Qf4?! 36.Ke2 Qb8 37.Rc6 Kd7 38.Rc5–+) 36.Bf7 Kf7–+; B) 35.Rd8=) 34...h2 (34...Qg2 35.Ke1 Qe2) 35.Nf2 (35.Rf8 Kf8 36.Be3 h1Q 37.Bg1 Qhg1) 35...Qc3 (35...Qg1) 36.Ra6 (36.Rh8 Qa1 37.Nd3–+) 36...Qc1 37.Kg2 (37.Bd1 Qd1!! 38.Nd1 h1Q 39.Kf2 Qh4 40.Kf1 Re1 41.Kg2 Re2 42.Nf2 Qf2 43.Kh3 Qh2) 37...Qf4 (37...Qg1 38.Kh3 Re3 39.Kh4 Qf2 40.Kg5 Qg3 41.Bg4 Qg4 42.Kh6 h1Q) 38.Rc6 (38.Bh5 Kg7 39.Raa8 Qd4 40.Rh8 Qf2 41.Kf2–+) 38...Re2 (38...Qf2 39.Kf2 h1Q 40.Bb5–+) 39.Rb7 Re7 40.Rbb6 (40.Re7 Ke7 41.Rc2–+) 40...h1Q! 41.Nh1 (41.Nh1 Re2 Mate attack; 41.Kh1 Qf3 Mate attack) 41...Re2 42.Kg1 Qh2 43.Kf1 Qg2 (43...Qh1 44.Ke2 Qe4 45.Kf1 Qf4 46.Ke2=+) 0–1. wilfredshunk – serenity69, gameknot.com, 2018. (=1.a3 a6 2.b4 b5)

3.e3 Bb7 4.Bb2 Nf6 5.d4 g6 6.Nf3 Bg7 7.c4 bc4 8.Bc4 0-0 9.Nc3 d6 10.0-0 Nbd7 11.Re1 c5 12.d5 cb4 13.ab4 Rc8 14.Ba6 Ba6 15.Ra6 Nb8 16.Ra1 Nd5 17.Qd5 Bc3 18.Bc3 Rc3 19.Nd4 Nd7 20.Nc6 Qe8 21.Ra7 Nb6 22.Qd4 Qc6 23.Re7 Rc4 24.Qf6 Nd5 0–1. varin123 – kot63 (1710), kurnik, 2012.

3.h4 Bb7 4.Rh3 d6 5.Rc3 Nd7 6.Bb2 c5 7.d4 c4 (7...cd4 8.Qd4 e5 9.Qd1–/+) 8.Rg3 e6 9.c3 (9.Nf3!?+=) 9...Qh4–/+ 10.Nf3 Qe7 11.Bc1 g6 12.Bg5 Ngf6 13.Qc2 Bg7 14.Bf6 Nf6 15.Rg5? (15.Nbd2 e5 16.de5 de5–+) 15...0-0 (15...Ne4 16.Rg4 f5 17.Rh4 Nf2 18.g3–+) 16.e3 (16.Nbd2 h6 17.Rg3 a5–+) 16...Bf3 (16...Ne4!? 17.Rg4 f5 18.Rh4–+) 17.gf3 Nh5 18.Rg4 f5 19.Rg2 e5 20.Nd2 ed4 21.cd4 d5 22.0-0-0? a5 23.Qc3 ab4 24.Qb4 Qb4 25.ab4 Ra1 26.Nb1 Rfa8 27.Rd2 R8a2 28.Ra2 Ra2 29.f4 Nf6 30.f3 Rg2 31.Bg2 h5 32.Nc3 Bh6 33.Nb5 g5?? 34.Nd6?? gf4+= 35.Nf5 Bg5 36.e4 de4 37.fe4?? f3–+ 38.Kc2 fg2 39.e5 Ne8 40.Kc3–+ g1Q 41.Kc4 Qf1 42.Kd5 Qf5 43.b5 Qb1 44.Kc6 Qc2 45.Kd7 Kf8 46.d5 Qc7 47.Ke6 Qe7 48.Kf5 Be3 49.d6 Qf7 50.Ke4–+ Bb6 51.d7 Qd7 52.Kf4 Qd4 53.Kf5 h4 54.e6 h3 55.Kg6 h2 56.e7 Ke7 (56...Ke7 57.Kf5 h1Q 58.Kg5 Qhd5 59.Kg6 Qg7#) 0–1. ciesielkaa – golfx, kurnik, 2012.

2.a3 b6

3.Bb2 c6 4.e3 d6 5.d4 e6 6.c4 f6 7.Bd3 g6 8.Qc2 Ne7 9.Nf3 Bg7 10.e4 0-0 11.0-0 d5 12.ed5 cd5 13.c5 Nbc6 14.Nbd2 Bd7 15.Nb3 b5 16.Nbd2 Qc7 17.Rfe1 Rf7 18.h3 Rb8 19.Nh2 a5 20.Qb3 a4 21.Qc2 e5 22.de5 fe5 23.Bg6 Ng6 24.Ndf3 Bf5 25.Qd2 Rd8 26.Ng5 Re7 27.g4 Bc8 28.Nhf3 d4 29.Ne4 Rf7 30.Nfg5 Rf4 31.Nd6 Rdf8 32.Re4 Rf2 33.Qf2 Rf2 34.Kf2 h6 35.Kg3 hg5 36.Rf1 Be6 0–1. varin123 – vallejos, kurnik, 2012.

3.Bb2 d6=.

3.e3 c6 4.d4 d6 5.c4 e6 6.Bb2 f6 7.Nc3 g6 8.Bd3 Bg7 9.Qc2 Ne7 10.Nf3 Kf8 11.h4 f5 12.h5 Nd7 13.Ng5 Nf6 14.hg6 hg6 15.Rh8 Bh8 16.0-0-0 a5 17.Rh1 Bg7 18.e4 ab4 19.ab4 Bd7 20.e5 de5 21.Nh7 Nh7 22.Rh7 ed4 23.Ne2 e5 24.Qd1 Be6 25.Qh1 Bg8 26.c5 bc5 27.bc5 Nd5 28.Bc4 Ra4 29.Bb3 Rb4 30.Ba2 Qa5 0–1. varin123 – vallejos, kurnik, 2012.

3.e3 Nf6 4.Bb2=.

3.e3 h5 4.a4 c6 5.Nc3 g5 6.b5 ab5= 7.h4 gh4 8.Bb2= ba4 9.Na4 b5?? 10.Nc5?? d6?? 11.Rh4 dc5?? 12.Bh8 c4?? 13.Rb1 Nf6 14.d3 cd3 15.Bd3 e5 16.Nf3 Ra3? 17.Ne5 Na6?? 18.Bf6 Ra2 19.Qh5 Qc7 20.Re4 Ra3 21.Nc6 Kd7 22.Bb5 Qc6 23.Qd5 Kc7 24.Qc6 Kb8 25.Be5 Ka7 26.Bb8! Nb8 27.Qc7 Ka8 28.Bc6 Nc6 29.Qc8 Nb8 30.Qf8 f6 31.Qb8 1–0. esko – mrspock, net–chess.com, 2001.

3.Bb2 Bb7

4.d3 d6

5.Nd2 Nd7 6.Ngf3 c6 7.g3 e6 8.Bg2 Ngf6 9.0-0 Be7 10.c4 0-0 11.Rc1 a5 12.b5 cb5 13.cb5 Bf3 (13...Rc8 14.Rc8 Qc8 15.a4=) 14.Nf3+= d5 15.a4 Nc5 16.d4 Nce4 17.Nd2 Nd6 18.Re1 Rc8 19.Rc8 Qc8 20.Qc1 Qd7 21.Qa1 Rc8 22.Rc1 Rc1 23.Qc1 Nfe8 24.e4 de4 25.Ne4 Ne4 26.Be4 Nd6 27.Bc6 Qc7 28.d5+= ed5 29.Bd5 Qc1 30.Bc1 Nf5 31.Bb2 Bc5 32.Kg2 Nd4 33.f4 Kf8 34.Bc6 f6 35.Bd4 Bd4 36.Kf3 Ke7 37.Ke4 Bc5 38.Kd5 h6 39.h3 g6 40.g4 Be3 41.f5 g5 42.Bb7 Bc5 43.Bc6 Bb4 44.Bb7 Be1 45.Bc6 Bg3 46.Bb7 Be5 47.Kc6 Bd4 48.Bc8 Bc5 49.Be6 Bg1 50.Kd5 Bf2 51.Kc6 Be3 52.Kb7 Kd6= 53.Kc8 Ke5 54.Kd8 Kf4 55.Ke8 Bd4 56.Kf7 Kg3 57.Kg6 Kh3 58.Kh6?? Kg4–+ 59.Kg6 Kf4 60.Kh5 g4 61.Kh4 g3 62.Kh3–/+ Be5 63.Bd7 Ke3 64.Bc6 Kd4 65.Bf3 Ke3 66.Bd5 Kf2–/+ 67.Bc6 Ke3 68.Bd5 Kd4 69.Bf3 Kc3 70.Bd1 Kd2 71.Bf3 Kc2 72.Bd5 Kc3 73.Bf3 Kb4 74.Bd1 Ka3 75.Kg2 Kb4 76.Bc2 Kc3+= 77.Bd1 Kd4 78.Be2 Ke3 79.Bd1 Kf4 80.Be2? Kf5–+ 81.Bd3 Kg5 82.Be2 f5 83.Bf3 f4 84.Be4 Kf6 85.Bd5 Ke7 86.Bc6 Kd6 87.Be4 Kc5 0–1. golfx – hyman, kurnik, 2011.

5.Nd2 Nd7 6.Ngf3 e6 7.g3 Ngf6 8.Bg2 Be7 9.0-0 0-0 10.c4 c5 11.bc5 dc5 12.e3 b5 13.cb5 ab5 14.Nb3 (14.a4 b4=) 14...Rc8 15.Rc1 Ba8 16.Qd2 Nb6 (16...Bd5 17.Qc2+=) 17.Rfd1 Na4 18.Ba1 Nb6 (18...Bd5 19.Rb1+=) 19.Qa5 Nbd5 (better is 19...Bc6!?=) 20.Qb5+/– Bc6 21.Qc4 Nb6 22.Qc2 Bd5 23.Qb2 Bb3 24.Qb3+/– Rb8 25.Qc2 Nbd5 26.d4 cd4+/– 27.Nd4 Rc8 28.Qd3 Rc1+/– 29.Rc1 Qd6 30.a4 Nb4 31.Qb5 Nfd5 32.Rc6?? Qb8?? 33.Qb8 Rb8 34.Rc4 Ra8 35.Bd5 ed5 36.Rc7 Bf8 37.Bc3 Ra4 38.Bb4 Rb4 39.Rd7 Rb1 40.Kg2 Rb8 41.Rd5 g6 42.Rb5 Ra8 43.Kf3 Kg7 44.h3 Ra7 45.g4 Be7 46.Nc6 Rc7 47.Ne7 Re7 48.e4 h6 49.e5 Re6 50.Rd5 g5 51.Kg3 Kg6 52.f4 gf4 53.Kf4 Ra6?? 54.h4 Ra4 55.Ke3 (55.Ke3 Rg4 56.Rd6 Kf5 57.Rh6 Ke5 58.Rh8=) 1–0. golfx – hyman, kurnik, 2011.

5.Nd2 Nd7 6.Ngf3 e6 7.g3 Ngf6 8.Bg2 Be7 9.c4 0-0 10.0-0 c5 11.bc5 dc5 12.e3 b5 13.cb5 ab5 14.Nb3 (14.a4 b4=) 14...Rb8 15.Na5?? (better is 15.Qc2=) 15...Qa5–+ 16.Qb3 c4! 17.dc4 bc4 18.Qc4 Bd5 (better is 18...Bf3!? 19.Bf6 Bg2 20.Be7 Bf1 21.Qf1–+) 19.Qc3 (19.Qe2–+) 19...Rfc8 (better is 19...Qa6 20.Nh4 Rb3–+) 20.Qa5+– Rb2 21.Rab1 Ra2 22.Qa7 Ra8 23.Qa8?? Ba8–/+ 24.Ra1 Ra1 25.Ra1+= g6 26.a4= Kg7 27.a5 Bc5 28.Nd4 Bg2 29.Kg2+/– Bd4 30.ed4 Nd5 31.a6 N5b6 32.a7 Na8 33.Rb1 Ndb6 34.Kf3 h6 35.Ke4 Kf6 36.Kd3 Ke7 37.Kc3 f6 38.Kb4+/– e5?? 39.de5 fe5?? 40.Kc5 Ke6 41.Rb6 Nb6 42.Kb6 Kf5 43.a8Q Kg4 44.Qg2 g5 45.Kc5 h5 46.Kd5 h4 47.Ke5 hg3 48.hg3 Kh5 49.Qh3 Kg6 50.Qg4 Kh6 51.Kf5 Kg7 52.Qg5 Kf7 53.Qg6 Ke7 54.Qf6 Kd7 55.Qe6 Kc7+– 56.Ke5 Kb7 57.Qd6 Ka7 58.Qc6 Kb8 59.Qd7 Ka8 60.Kd5 Kb8 61.Kc6 Ka8 62.Qb7# 1–0. golfx – hyman, kurnik, 2011.

5.Nd2 Nd7 6.Ngf3 Ngf6 7.g3 e6 8.Bg2 Be7 9.0-0 0-0 10.e3 e5 11.c4 Rc8 12.Rc1 c5 13.b5 a5 (13...ab5 14.cb5 Ra8 15.Nc4=) 14.a4 Ne8 15.Re1 f5 (better is 15...Bf6+=) 16.d4?? (16.Ng5 Bg5 17.Bb7 Rb8 18.Bd5 Kh8+/–) 16...Bf3 (better is 16...e4–/+) 17.Nf3 e4 18.Nd2 Bf6 19.dc5?? Nc5?? 20.f3?? Nd3 21.Qc2?? Ne1 22.Re1 Kh8 23.fe4+= fe4 24.Be4 g6 25.Bf6 Qf6 26.Rf1 Qg7 27.Rf8 Qf8 28.Qc3 Qg7 29.Qg7 Kg7 30.Bd5 Nf6 31.Bc6 Rf8 32.h3 h6 33.Kg2 g5 34.Nb3 Rf7 35.Nd4 Kg6 36.Ne2 Re7+= 37.Kf3 h5 38.g4 hg4 39.hg4 Kh6 40.Ng3+= Kg6 41.Nf5 Re5 42.Nd6+/– Rc5 43.Nc8 Rc4= Exerts pressure on the isolated pawn 44.Nb6 Rb4 45.e4 Rb3 46.Kf2 Rb2 47.Ke3 Rb3 48.Kd4+/– Ng4 49.e5 Rb4= 50.Kd5 Ne3 51.Kd6 Rd4 52.Kc7 Kf5=. golfx – hyman, kurnik, 2011.

5.e4 Nf6=.

5.g3?? Nd7 6.Nf3= e6 7.Bg2 Ngf6 8.0-0 Be7 9.Nbd2 0-0 10.c4 c5 11.bc5 dc5 12.Qc2 Ne8 13.Rab1 Bf6 14.Bf6 Nef6 15.e3 Rb8 16.d4 cd4 17.ed4 Bf3 18.Nf3 Qc7 19.Rfd1 b5 20.c5 Nd5 21.a4 b4 22.Qc4? a5 23.Nd2? N7f6 24.Nb3 Nc3–+ 25.Qa6 Nb1 26.Rb1–/+ Ra8?? 27.Qb5 Rfb8–/+ 28.Qc4 Ra7 29.Rd1 Rd8 30.Qb5 Nd5 31.Bd5 Rd5?? 32.Qd3 g6 33.Qe4 Ra8 34.f4 Rad8 35.Kg2 Kg7 36.Kf3? h6 37.h3? Ra8 38.g4 Qe7 39.h4? Qh4 40.Rg1 Qh3 41.Rg3 Qf1 42.Ke3 Qe1 43.Kf3 Qc3 44.Kg2 Qb2 45.Kh3 Rad8 46.c6 Rd4 47.Nd4 Rd4?? 48.Qe5= Kh7 49.Qf6 (49.Qf6 Rd2 50.Qb2 Rb2 51.Rc3 bc3 52.c7=). golfx – hyman, kurnik, 2011.

5.g3?? Bh1 6.e4 Nc6 –+.

2.a3 Nc6

3.d4 d5 4.Nf3 Nf6 5.Bf4 Bg4 6.Ne5 Ne5 7.de5 Ng8 8.f3=.

3.d4 e5 4.de5 Ne5 5.e4 b5 6.Qd5 Nc6 7.Nf3 Bb7 8.Ng5 (8.Bb2 Qe7=) 8...Qf6+= 9.Bb2 (9.Bb2 Qg6 10.Nd2+=). Roderick64 – xorb, ChessWorld.net, 2010.

3.Nf3 e6 4.Bb2 (4.e3 Nf6=) 4...f6 (4...Nf6!?=) 5.e3 (5.d4 d5+=) 5...Nge7 (5...Nh6 6.d4+=) 6.Nc3 (6.d4 g6+=) 6...a5 (6...d5!?=) 7.b5+– Ne5 8.Ne5 fe5 9.Qh5 g6 (9...Ng6!? 10.h4 d5+–) 10.Qe5+– Rg8 11.Ne4 h6?? (better 11...Bg7 12.Nf6 Bf6 13.Qf6 Nf5+–) 12.Nf6 Kf7 13.Ng8 Kg8 (13...Ng8 14.Qf4 Nf6+–) 14.h4 Bg7 (14...d5 15.h5 d4 16.Bd4 g5 17.Qh8 Kf7+–) 15.Qg7 1–0. Pierre – Waldorffy, internet, 2020.

2.a3 e5

3.Bb2 Bb4 4.Be5 d6?? 5.Bg7+– Qe7 6.Bh8 f6 7.e3 Bf5 8.c3 Bc5 9.d4 Ba7 10.Bd3 Bd3 11.Qd3 Nd7 12.Nf3 0-0-0 13.0-0 Nh6 14.Bf6! Nf6 15.c4 d5 16.Nc3 Ne4 17.Nd5 Qe6 18.Rab1 Nf5 19.Qb3 Nh4 20.Qb7 Kd7 21.Qc7 Ke8 22.Nh4 Nd2 23.Qh7 Qe4 24.Qh8 Kf7 25.Rb7 Ke6 26.Re7 (26…Kd6 27.Qd8 Kc6 28.Qc7; 26.Qf6) 1–0. gtate – baxter, net–chess.com, 2001.

3.Bb2 Nc6 (--> 2.Bb2 Nc6 3.a3 e5).

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.a3 a6).

3.Bb2 Qf6 4.Nf3= Bb4 5.Be5+/– Qg6 6.Bc7 Nc6 7.c3 Bd6 8.Bb6 Ne5 9.e3 Ne7 10.Ne5 Be5 11.d4 Qb6 12.de5 Qb2 13.Ra3 Qb6 14.Qb3 Qb3 15.Rb3+/– 0-0 16.Bd3 Rb8 17.c4+– Nc6 18.f4 Na5 19.Rb6 Re8 20.Nc3 f6 21.ef6 Re3 22.Kd2 Re6 23.Re6 de6 24.fg7 Nb3 25.Kc2 Nc5 26.h4 Bd7 27.h5 Kg7 28.a5 Kh6 29.g4+– Bc6 30.g5 Kg7 31.Re1 Bf3 32.h6+– Kg8 33.Ne4 Ne4 34.Be4+– Be4 35.Re4 Re8 36.Kc3 Kf7 37.Kd4 Kg6? 38.Re5 Rd8 39.Kc5 Kf7 40.Kb6 Rd7 41.c5 Rd5 42.Kb7 Ke7 43.Ka6 Kd7 44.Kb6 Rd4 45.c6 Kc8 46.Re6 Rd8 47.a6 Rf8 48.a7 (48…Rf4 49.a8Q) 1–0. katchum (1690) – gstevenson, net–chess.com, 2001.

2.a3 Nf6

3.Bb2 d6 4.d3 e5 5.Nd2 Nc6 6.g3 g6 (6...Be7 7.Bg2+=) 7.Bg2 Bd7 8.c4 Rb8 9.Ngf3 Bg7 10.0-0 h6 11.Re1 0-0 12.Rc1 Re8 13.e3 Ne7 14.Nb3 Bc6 15.Na5 Ba4?? (better is 15...Bd7=) 16.Qa4+– b5 17.cb5 ab5 18.Qc2 c5 19.d4 (better is 19.Nb3 cb4 20.ab4 Rc8+–) 19...c4 (19...cd4 20.ed4 e4+–) 20.de5 de5 21.Be5 Rc8 22.Qc3 Ned5 23.Qd4 Re6 24.Red1 c3 25.Rd3 c2 26.Rd2 Ne8 27.Rdc2 Be5 28.Ne5 Rc2 29.Rc2 Rd6 30.Qc5 Ndf6 31.Nac6 Rd1 32.Bf1 Qd6 33.Qd6 Nd6 34.Nd4 Nfe4 35.Nb5! Nb5 36.Kg2 Na3 37.Rc8 Kg7 38.b5 Rd2 39.Kf3?? Nf2?? 40.b6+– Rb2 41.Nd7 Nd1?? 42.Rc7 Rb3 43.b7 Ne3 44.Kf2 Nd5 (44...Nd5 45.Rc5 Rb7 46.Rd5 Rb2 47.Be2 f5+–). golfx – krzysiek7101, kurnik, 2012.

3.Nf3 d5 4.e3 Bg4 5.h3 Bh5 6.Bb2 e6 7.Be2 Bd6 8.g4 +=.

2.a3 h6

3.Bb2 b6 4.d3 Nf6 5.Nd2 e6 6.Ngf3 Bb7 7.g3 (7.e4 Be7+=) 7...d5 8.Bg2 Nbd7 9.0-0 Be7 10.e3 0-0 11.c4 c6 12.d4 Rc8 13.c5 bc5 14.bc5 Rb8 15.Bc3 e5 16.Qa4 ed4 17.Bd4 (17.ed4 Re8+=) 17...Ne4 (better is 17...Nc5 18.Qc2 Nce4–/+) 18.Ne4+= de4 19.Nd2 (19.Ne5 Nc5 20.Bc5 Bc5+/–) 19...f5 20.Rab1 (20.Qc4 Kh7 21.f3 ef3 22.Nf3 Bf6+=) 20...Bf6 21.Nb3 Bd4+= 22.Nd4 The isolani on c6 becomes a target 22...Nc5+= 23.Qc4 Qd5 24.Rfc1 Nd3 25.Qd5 cd5 26.Rc3 Rfc8?? 27.Rcb3?? Rc7= 28.a4 Nc5+= 29.Rb4 Rbc8 30.Bf1 Bc6 Attacking the isolated pawn on a4 31.Nc6 Rc6–/+ 32.a5 Ne6 33.Rb6= Rb6 34.ab6 Rb8 35.Ba6 Nc5 36.Be2 Kf7 37.f3 Ke7 38.g4 g6 39.gf5 gf5 40.fe4 fe4 41.Bg4 Kd6 42.Kg2 Kc6 43.Bh5 Rb6 44.Rb6 Kb6 45.Bf7 Kc6 46.Kg3 Nb3 47.Kf4 Nc1 48.h4 Nd3 49.Kf5 Nb4 50.h5 1–0. golfx – silas10, kurnik, 2012.

3.Bb2 d6 4.d3 Nd7 5.Nd2 Nb6 6.g3 Na4 7.Qb1 Nb2 8.Qb2 Nf6 9.Bg2 g6 10.Ngf3 Bg7 11.c3 Nd5 12.d4 Nb6 13.Qb3 0-0 14.Rc1 e6 15.0-0 d5 16.Rfd1 Nd7 17.c4 dc4 18.Qc4 c6 19.a4 Nb6 20.Qb3 Bd4?? 21.Nd4+– Qd4 22.b5 Qa4 23.Qa4 Na4 24.bc6 b5 25.c7 Ra7 26.Nb3 Nb2–/+ 27.Rd8? Nc4–+ 28.Rf8 Kf8 29.Nc5 Rc7 30.Na6 Ba6 31.Ra1 Bb7 32.Ra7 Nd6 33.Bf1 Ke7 34.e3 f6 35.f4 f5 36.Bd3 Kd7 37.Kf1 Bc6 38.Ra6 Nb7 39.Ke2 Nc5 40.Bb1 Na6 41.Ba2 Nb4 42.Bb3 Bd5 43.Bd5 ed5 44.Kf3 h5 45.h3 Rc3 46.g4 h4 47.Ke2 Rc2 48.Kf3 Rd2 49.gf5 gf5 50.e4 de4 51.Ke3 Rd3 52.Ke2 Rh3 53.Kf2 Ke6 54.Kg2 Ra3 55.Kf2 Kf6 56.Kg2 Kg6 57.Kf2 Kh5 58.Kg2 Kg4 59.Kh2 Kf4 60.Kg2 e3 61.Kh2 Kf3 62.Kh3 Kf2 63.Kh4 f4 64.Kg4 f3 65.Kf4 e2 66.Ke4 e1Q 67.Kd4 Rd3 68.Kc5 Qe5 69.Kb4 Qd4 70.Ka5 Ra3 71.Kb5 Rb3 72.Kc6 Rc3 73.Kb5 Qd5 74.Kb4 Qc4 75.Ka5 Ra3 76.Kb6 Rb3 (76...Rb3 77.Ka5 Qb5#) 0–1. golfx – murat27, kurnik, 2012.

3.Bb2 d6 4.d3 e5 5.Nd2 Nf6 6.g3 Nbd7 7.Bg2 Nb6 8.c4 Nbd7 9.Ngf3 Ng4 10.0-0 h5 11.h3 Ngf6 12.e4 g5 (12...c5+/–) 13.Qe2 (better is 13.Ng5 h4 14.g4+–) 13...g4= 14.Nh4 gh3 (14...Nb8 15.Nf5 gh3 16.Bh3=) 15.Bh3+= Nb8 16.Bc8 Qc8 17.Kg2 Ng4 18.Ndf3 Rg8 19.Nf5 Qe6 20.d4 White plans c5 20...f6 21.de5 fe5+= 22.c5 Nd7 23.cd6+= Bd6 24.Rad1 0-0-0 25.Rh1 Ndf6 26.Nd6 Rd6= 27.Rd6 Qd6 28.Rd1 Qe6 29.b5 a5 30.a4 b6 31.Rc1 Kb8 32.Nh4 Qb3 33.Qc2 Qc2+= 34.Rc2 Ne4 35.Nf3 Nef2 36.Rf2= Nf2 37.Kf2 e4 38.Nh4 e3 39.Kf3 e2 40.Bc3 Rf8 41.Ke2+/– Kb7 42.Ke3 c6 43.bc6 Kc6 44.Be5 Re8 45.Ke4 Kc5 46.Nf5 Kb4 47.Nd6 Re6 48.Nf5 Ka4–/+ 49.Ng7 Re7 50.Nh5= b5 51.Nf4 b4 52.Nd3 b3 53.g4 Ka3 54.g5= Ka2 55.g6 b2?? 56.Nb2+– Re6? 57.g7 (57.g7 Re8 58.Na4+–) 1–0. golfx – swidwin3m19, kurnik, 2012.

3.Bb2 e5 4.d3 (better is 4.Be5!? Nc6 5.Bb2+/–) 4...d6= 5.Nd2 Nc6 6.g3 Bf5 7.Bg2 Qd7 8.Ngf3 Nf6 9.c4 Be7 10.0-0 Ng4 11.e3 (11.d4 0-0+=) 11...h5 (better is 11...Bd3 12.Re1 e4–/+) 12.e4 Be6 13.h4 g5 14.d4 ed4 15.Nd4 Nd4 16.Bd4 Rg8 17.hg5 Bg5 18.Nf3 (18.f4 c5 19.bc5 dc5 20.Bc5 Rc8=) 18...h4 (18...Bc4!? 19.Re1 Qe6+=) 19.Ng5= Rg5 20.c5 (20.f3!? h3 21.Bh3=) 20...hg3+= 21.fg3 0-0-0 22.a4 dc5–+ 23.Bc5 Qd1 24.Rad1= Rd1 25.Rd1 Ne3?? 26.Be3+– Rg3 27.Kf2 Rg4 28.Bf3 Rg7 29.Bd4 Rg8 30.Bf6 c6 31.e5 Kc7 32.b5! ab5 33.ab5 cb5 34.Rc1 Kb6 35.Rb1 Kc5 36.Be7 Kb6 37.Be2 Bd7 38.Kf3 Re8 39.Bf6 Re6 40.Kf4 Rc6 41.Ke4 Rc5 42.Bg5 Rc2 43.Bd3 Rc3 44.Be3 Kc6 45.Kd4 Rc5?? 46.Be4+– Kb6 47.Kd3 Bc6 48.Bc6 Kc6 49.Bc5 Kc5 50.Ke4 b6 51.Kf5 b4 52.Kf6 Kc4 53.Kf7 b3 54.e6 Kc3 55.e7 Kc2 56.Rg1 b2 (56...b2 57.e8Q b1Q 58.Qc6 Kd2 59.Rb1 Kd3 60.Rb3 Kd2 61.Qd6 Ke1 62.Qh2 b5 63.Rb1#). golfx – lomakon, kurnik, 2012.

3.Bb2 e6 4.d3 d5 5.Nd2 Nf6 6.g3 (6.e4 a5 7.e5 Nfd7=) 6...Bd6 7.Bg2 c6 8.Ngf3 a5 9.c3 (9.e4 Be7= (worse is 9...ab4 10.e5+/–)) 9...ab4 10.cb4 c5 (10...Nbd7 11.d4=) 11.Bc3 (11.e4 Be7 (worse is 11...cb4 12.e5+–) 12.bc5 Bc5=) 11...d4 12.Bb2 cb4 13.ab4 Ra1 14.Qa1 Bb4 (14...e5 15.Nc4 Qc7 16.0-0+=) 15.Bd4 (15.Qa4 Nc6 16.Nd4 Qa5+=) 15...Bd2 (15...Nc6!?=) 16.Nd2+/– 0-0 17.0-0 Ng4? (better is 17...Nbd7+/–) 18.Bg7+– Re8 19.h3 (19.Bc3!? Nd7+–) 19...f6 (19...e5 20.hg4 Kg7 21.Nc4+/–) 20.hg4 Kg7 21.Ne4 e5 22.Rc1 Bg4+= 23.f3 Be6 24.Qb2 Qd4 25.Qd4+/– ed4 26.Nd6 Re7 27.Rb1 Bd5?? 28.Rb4?? Rd7 29.Ne4?? Be4 30.fe4 Nc6 31.Rb6 Ne5 32.Bh3 Rc7 33.Bf5 Kf7 34.Kf2 Kg7 35.g4 Kf7 36.Rd6 Re7 37.Kg3 Ng6 38.Bg6 Kg6 39.Rd4 b5 40.Rb4 Rb7 41.e3 Kf7 42.d4 Ke6 43.Kh4 Kd6 44.Kh5 Rg7? 45.Rb5 Rg5 46.Kh4 White prepares d5 46...Rb5–+ 47.Kg3 Rb3 48.Kf4 White prepares the advance e5 48...Ke6 49.d5 Kd6 50.Kf5 Ke7 51.Kf4 Rb1 52.e5 Rf1 53.Ke4 Rg1 54.Kf4 Rd1 55.e4 fe5 56.Ke5 Rg1 57.Kf5 Kd6 58.Kf6 Rg4 59.Kf5 Rg1 60.Kf6 Re1 61.Kg6 Re4 62.Kh6 Re5 63.Kg6 Rd5 (63...Rd5 64.Kf6 Kd7 65.Kf7 Rd6 66.Kg8 Ke8 67.Kg7 Ke7 68.Kg8 Kf6 69.Kh7 Kf7 70.Kh8 Rh6#) 0–1. golfx – kopeeex, kurnik, 2011.

3.Bb2 e6 4.d3 d6 5.Nd2 Nf6 6.g3 Nc6 7.Bg2 d5 8.Ngf3 Bd6 9.0-0 0-0 10.c4 d4 (better is 10...Re8!?+=) 11.Nd4+/– (11.Bd4?! Nd4 12.Nd4 Be5+=) 11...Nd4 12.Bd4 e5 13.Bb2 Be6? (better is 13...c6+/–) 14.Bb7 Rb8 15.Ba6 Qd7 16.Bb5 Bh3 (16...c6 17.Ba4 Ra8+–) 17.Bd7 Nd7 18.Re1 f5 19.Nf3 f4 20.Qd2 fg3 21.fg3 Rbe8 22.c5 Be7 23.Ne5 Ne5 24.Be5 Bg5 25.e3 Re5 26.d4 Be3 27.Re3 Ref5 28.Ree1 Rf2 29.Qf2 Rf2 30.Kf2 Bf5 31.d5 1–0. golfx – kopeeex, kurnik, 2011.

3.Bb2 Nf6 4.d3 Nc6 5.Nd2 e5 6.g3 d5 7.Bg2 d4 8.Ngf3 Bd7 9.0-0 Bd6 10.c3 dc3 11.Bc3 0-0 12.Nc4 e5 seems the pivot of the position 12...Be7? (12...Qe7 13.Rc1=) 13.d4 (13.Nfe5!? Ne5 14.Be5+/–) 13...ed4 14.Nd4 Nd4 15.Bd4 Bb5 16.Qb3?? Qd4–+ 17.Na5 Bc6! 18.Nc6 bc6 19.Bc6 Rad8 20.Rad1 Qb6 21.Bg2 c5 22.e3 cb4 23.ab4 Qb4 24.Qb4 Bb4 25.Rb1 a5 26.Rfd1 Rd1 27.Rd1 Rc8 28.Bb7 Rb8 29.Bf3 a4 30.Rb1 a3 31.Ra1 Bd6 32.Ra2 Rb2 33.Ra1 a2 34.Bc6 Rb1 35.Rb1 ab1Q 36.Kg2 Bb4 37.h3 Ne4 38.Be4 Qe4 39.Kf1 Qh1 40.Ke2 Qh3 41.Kf3 h5 42.Kf4 Qg4 43.Ke5 Qf3 44.g4 Qg4 45.f4 Qe6 46.Kd4 Bd6 47.Kd3 f5 48.Kd4 Qe4 49.Kc3 Qe3 50.Kc4 Qf4 51.Kd5 Qe5 52.Kc6 Qc5 53.Kd7 Qc7 54.Ke6 Qe7 55.Kf5 Qe5 56.Kg6 Qf6 57.Kh5 g6 58.Kg4 Qf4 59.Kh3 Qg3# 0–1. golfx – lomakon, kurnik, 2012.

3.Bb2 Nf6 4.d3 e6 5.Nd2 d5 6.g3 (6.e4 Be7=) 6...Nc6 7.Bg2 Bd6 8.Ngf3 Qe7 9.0-0 g5 (9...e5 10.c4 Qe6 11.cd5 Nd5 12.d4 ed4 13.Ne4 Qe4 14.Nd4=) 10.c4+= g4 11.Nh4 d4? (better is 11...Be5 12.Be5 Ne5+=) 12.c5+– Be5 13.Ne4?? (better is 13.Bc6 bc6 14.Nc4+–) 13...Ne4= 14.de4 Bd7 15.e3 de3+= 16.fe3?? Bb2–+ 17.Ra2 Be5 18.Qg4 0-0-0 19.Qf3 Rdg8 20.Qf7 Qf7 21.Rf7 Bg3 22.hg3+= Rg3 23.Kf2 Rhg8 24.Nf3?? Rg2–+ 25.Kf1 Ra2 26.Nh4 Ne5 27.Rf2 Ra1 28.Ke2 Ng4 29.Rf4 h5 30.Kd3 Ra3 31.Kd4 Re3 32.Rg4–+ Rg4 33.Ke3 Rh4 34.Kf3 e5 35.Ke3 Rh3 36.Kd2 Rg3 37.Ke2 h4 38.Kf2 Rg5 39.Kf3 h3 40.Ke3 h2 41.Kd3 h1Q 42.Kc4 Qe4 43.Kb3 Rg3 44.Kb2 Qe2 45.Kc1 Rg1# 0–1. golfx – lomakon, kurnik, 2012.

3.Bb2 Nf6 4.g3 d5 5.Bg2 Nc6 6.Nf3 e5 (6...Qd6 7.Bf6 Qf6 8.Nc3=) 7.0-0 (better is 7.Ne5!? Ne5 8.Be5+/–) 7...e4 8.Nd4 Nd4 9.Bd4 Bd6 10.d3 Be6 11.de4 Ne4 12.Nd2 Qd7? (better is 12...Nd2!? 13.Qd2 0-0+=) 13.Ne4 (13.Be4 de4 14.Bg7 Rh7 15.Ne4 Be7 16.Qd7 Kd7 17.Rfd1 Kc6+–) 13...de4+/– 14.Be4 c6 15.Qd3 (15.Bg7 Rg8 16.Bf6 Bh3+–) 15...Bh3 (15...f5 16.Bg2+/–) 16.Rfe1 (better is 16.Bg7!? Rg8 17.Rfd1 0-0-0+–) 16...0-0 17.Qc3 f6 18.Rad1 Rae8 19.Bf3 Bg4?? (better is 19...Qe6+/–) 20.Bc5+– Re6 21.Bg4 f5 22.Bh3 Qc7 23.e4! Re4 24.Re4 fe4 25.Bd6 Qd7 26.Bd7 Rd8 27.Qc4 Kh8 28.Qf7 Rg8 29.Be6 Kh7 30.Be5 Rh8 31.Bg7 (31.Bg7 Rd8 32.Bf5#; 31.Qg7#) 1–0. golfx – kopeeex, kurnik, 2011.

2.a4 b6

3.Bb2 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.a4 a6).

3.Bb2 d6 4.e3 Bb7 5.Nf3 Nd7 6.d4 Ngf6 7.Bd3 (7.Be2 e5=) 7...g6 (7...e5!? 8.Bf5 e4=) 8.c4 a5 (8...c5+=) 9.Qb3 (9.b5!?+=) 9...ab4= 10.Qb4 Bg7 (10...Bf3 11.gf3 e5 12.0-0=) 11.0-0 (11.Be2 c5 12.Qb3 0-0=) 11...0-0 (11...Bf3 12.gf3 Ra5 13.Bc3=) 12.Nbd2= Ra7 (12...e5 13.Be2=) 13.Qb3 (13.Rfd1 Qa8=) 13...Qa8 14.Qc2 Re8 15.h3 e5 16.de5 (16.d5 Nc5 17.e4 Nh5=+) 16...Ne5 17.Ne5 de5 (17...Bg2 18.Ng4 Bh3 19.Nf6 Bf6 20.e4 Bb2 21.Qb2 Bf1 22.Nf1 Ra4 23.Ra4 Qa4 24.Ne3–/+) 18.e4=+ Nd7 19.f4 (19.Nb3 Ra4 20.c5 Rd8=+) 19...ef4 (19...Nc5 20.a5 ba5 21.Be5 Be5 22.fe5 Re5 23.Ra3–+) 20.Rf4 (20.Bg7 Kg7 21.Rf4=+) 20...Nc5 (better 20...Ne5 21.Be2 Bh6–/+) 21.Raf1?? (better 21.Bg7 Kg7 22.Qc3 Kg8 23.Qf6=+) 21...Bb2–+ 22.Rf7 Be5 23.Nf3 (23.Qb1 Rd8 24.R7f3 Ra4–+) 23...Kf7 (23...Nd3 24.Qd3 Be4 25.Qd2 Ra4 26.Ne5=) 24.Ne5 Kg8 (24...Ke6 25.Qf2 Qd8 26.Be2 Ne4 27.Qf7 Ke5 28.Qf4 Kd4 29.Rd1 Kc5 30.Rd8 Rd8 31.Qc7 Bc6 32.Qd8+–) 25.Qc3 (25.Ng4 Rf8–+ (25...Ne4 26.Qb2 h5 27.Nh6 Kh7 28.Rf7 Kh6 29.Be4 Re4 30.Qd2 g5 31.Rf6 Kh7 32.Qd7 Kh8 33.Rh6 Kg8 34.Rg6 Kf8 35.Rf6 Kg8 36.Qf7 Kh8 37.Rh6)) 25...Rf8 (better 25...Na4 26.Qd4 c5–+) 26.Nf7 (26.Ng4 Rf1 27.Bf1 Be4 28.Nh6 Kf8 29.Qf6 Ke8 30.Be2–+) 26...Rf7 27.Rf7 Kf7 28.Qe5 (28.Bc2 Be4 29.Be4 Qe4–+) 28...Qd8 (better 28...Nd3!? 29.Qc7 Kg8 30.Qd6 Be4 31.h4–+) 29.Be2 (29.Bc2 Bc6 30.Qf4 Qf6–+) 29...Qd6 (better 29...Be4 30.Bg4–+) 30.Qh8 h5 (30...Be4 31.Qh7 Ke8 32.Qh8 Kd7 33.Bg4 Ne6 34.Qg7 Ke8 35.Qf6 Qd4 36.Qd4 Nd4 37.Bd1–+) 31.Qh7 Kf6 32.Qh8 Kg5 0–1. GuestHNYW – GuestCXKX, freechess.org, 2019.

3.Bb2 h6 4.e3 d6 5.Nf3 (5.Nc3 Nc6 6.Ba3 Nf6+=) 5...Bb7 (5...Nf6 6.Nc3+=) 6.d4 (6.a5 c5+=) 6...e6 7.Bd3 (7.Nc3 Nf6+=) 7...Ne7 (7...d5!? 8.c3 Nf6=) 8.0-0+– g5 (8...Nbc6!? 9.Qd2 d5+=) 9.d5! e5 (9...Bd5 10.Bh8 Discovered attack; 9...ed5 10.Bh8 Discovered attack; 9...Nd5 10.Bh8 Discovered attack) 10.c4 Bg7 11.h4 (11.Nc3 a5 12.ba5 Ra5+–) 11...Nd7 12.a5 (12.Nc3+–) 12...Bf6 (12...c5!? 13.dc6 Nc6+–) 13.ab6 (13.Nc3 gh4 14.ab6 Rg8+–) 13...cb6 (13...c6 14.dc6 Nc6 15.Be4 Qb6 16.Qd6+–) 14.Nfd2 (better 14.Nc3+–) 14...Nf8? (better 14...gh4 15.Nc3 h3+–) 15.Ne4 Neg6 (15...Nh7 16.f4 Bg7 17.fe5 de5+–) 16.Qa4 Nd7 (16...Ke7 17.c5 Nh7 18.Nd6 Bd5 19.Nc3+–) 17.Nd6 Ke7 (17...Kf8 18.Nb7 Qc7 19.Qc6 Qc6 20.dc6+–) 18.Nb7 Qg8 (18...Qc8 19.Be4 Qc4+–) 19.d6 Ke8 20.Qc6 gh4 21.Ra6! Rb8 (21...Ra6 22.Qc8 Mate attack) 22.Bf5 Ngf8 23.Nc3 Qg5 24.Nd5 Bd8 25.Nc7 Bc7 26.dc7 Rc8 (26...Qg2 27.Kg2 Rc8 28.Nd6 Ke7 29.Nc8 Ke8 30.Qd6 Rg8 31.Kh3 Rg3 32.fg3 hg3 33.Qe7) 27.Nd6 Ke7 28.Nc8 Ke8 29.Nb6 Rg8 (29...Ne6 30.Ra8 Qd8 31.Rd8 Nd8 32.cd8Q Kd8 33.Qd7) 30.Ra8 Ke7 31.Nd5 1–0. DEFFM (2100) – Maldoror17 (1630), lichess.org, 2020.

3.c4 Bb7 4.f3 e6–/+ 5.b5 ab5 (5...Qh4 6.g3 Qc4 7.e3–/+) 6.cb5=+ Be7 7.Bb2 Nf6 8.e4 0-0 9.Ne2 (9.Qc2 c6=+) 9...Bc5 (9...d5 10.e5 Nfd7 11.d4=+) 10.d4= Bb4 11.Bc3 Bc3 12.Nec3 c6 13.Nd2 d6 14.Bd3 Nh5 15.0-0 Qg5 (better 15...Nf4 16.Nc4 d5=) 16.Ne2?? (better 16.Nc4 Nf4 17.g3 cb5 18.Nb5+=) 16...Qe3–/+ 17.Kh1 (better 17.Rf2!? Qd3 18.f4–/+) 17...Qd3–+ 18.Nf4?? (18.Rb1 Qa3 19.g4–+) 18...Nf4 19.g3 Ng6 20.Rf2 (20.Nb3 Qc4–+) 20...Qd4 21.Qc2 (21.bc6 Bc6 22.Qe1–+) 21...Qf2 (21...Qa1 22.Kg2 Rc8 23.Qd3–+) 22.Rf1 Qc5 (better 22...Qd4 23.Nb3 Qa4 24.bc6 Nc6 25.Ra1–+) 23.Nc4 d5 (23...cb5 24.ab5 d5 25.Rc1–+) 24.ed5 ed5 0–1. afsharian (1610) – SKAlKA, lichess.org, 2019.

3.d4 e5 4.de5 Bb4 5.c3 +=.

3.d4 h5 4.e4 e6 5.e5 (5.c3 d5 6.Bd3 c5 7.bc5 bc5+=) 5...g6 (better is 5...Bb4!? 6.c3 Be7+=) 6.c3+= Bh6 7.Nf3 Bc1 8.Qc1 Qe7 9.Be2 Nh6 10.0-0 d6 11.Nbd2 f5 12.Nc4 d5 13.Ne3 Ng4 14.c4 Ne3 15.fe3 c5 16.cd5 ed5 17.b5 (better is 17.bc5!? bc5 18.Qc5 Qc5 19.dc5+–) 17...ab5+= 18.Bb5 Bd7 19.e6 Bb5 20.ab5 Ra1 21.Qa1 0-0 22.h4 (better is 22.dc5 bc5 23.Qe5+/–) 22...Qe6–/+ 23.Ng5 (23.Qc3!? c4 24.Ra1–/+) 23...Qe3–+ 24.Kh1 (24.Rf2 Nd7–+ (24...Qd4?! 25.Qa7 Qg7 26.Qb6+=)) 24...Qe7 (24...Qe7 25.Re1 Qb7=; 24...cd4?? 25.Qa7 Qg5 26.hg5+–) 0–1. Ratscales – 2buddies, ChessWorld.net, 2015.

2.a4 c6

3.Bb2 b5 4.ab5 cb5 5.e3 e5 (5...Bb7!?=) 6.Be5+– Nc6 7.Bb2 Bb4?? (better 7...Bb7 8.c3 Ne5+–) 8.Bg7+– d5 (8...Nge7 9.Bh8 Ng6 10.Bb2+–) 9.Bh8 (9.Bb5 Bb7 10.Bc6 Bc6+–) 9...d4 (9...Bf5 10.Nf3+–) 10.Bb5! Bd7 (10...ab5 11.Qh5 Double attack (11.Ra8 Pinning; 11.Ra8 Deflection; 11.Qh5 Decoy)) 11.Bd3 (better 11.Ra6 Ra6 12.Ba6 de3+–) 11...Ne5 (11...de3 12.Qe2 Bc5+–) 12.Be5 de3 13.fe3 Qh4 14.g3 Qg5 15.Bd4 (15.Qf3 Rc8 16.Bc3 a5+–) 15...Qd5 16.Nf3 Bg4 17.0-0 Bh3 18.Rf2 Nh6 19.c4 Qd7 20.Ne5 Qe6 21.Qa4 Kf8 22.Qb4 Kg8 23.Qb7 Rf8 24.Ra6 Qg4 25.Ng4 (25.Ng4 Nf5 26.Rf5 f6 27.Rg5 fg5 28.Qh7) 1–0. DEFFM – GuestTHDL, freechess.org, 2017.

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

3.Bb2 e6 4.e3 Bb4 5.Bg7 f6 (5...Nf6 6.Bh8 d6 7.Nc3+–) 6.Bh8 (better 6.Qh5 Ke7 7.Bh8+–) 6...Bd2 (6...Qe7+–) 7.Nd2 e5 8.Qh5 Ke7 9.Qh7 Kd6 10.Bc4 Kc7 11.Bg8 b5 12.ab5 (better 12.Ne4 Kb7 13.Bf6 Qa5 14.Ke2 Qc7+–) 12...cb5 13.c4 (better 13.Ne4 Kb6 14.Bf6 Qc7+–) 13...b4 14.Qf7 (better 14.Ne4 Nc6 15.Bf6 Qe8+–) 14...Nc6 15.Bf6 Ne7 16.Be7 Qe7 17.Qe7 (17.Qe7 Bb7 18.Bd5 Rg8 19.Qc5 Kd8 20.Bb7 Ke8 21.Ra6 Rg2 22.Qe5 Kf8 23.Qf6 Kg8 24.Bd5 Kh7 25.Qh6) 1–0. DEFFM – sprem, freechess.org, 2019.

3.Bb2 e6 4.Nf3 Nf6 (4...Bb4?? 5.Bg7 d5 6.Bh8+–) 5.b5 ab5 6.ab5 Ra1 7.Ba1 cb5 8.e3 Qb6 (8...b4 9.Bb5=) 9.Be2 (9.Bd4 Bc5+=) 9...Qa5 (9...d5 10.Bd4 Bc5 11.Bc5 Qc5 12.0-0=) 10.Bf6 gf6 11.Nc3 Exerts pressure on the isolated pawn (11.Nd4 b4=) 11...b4 12.Nb5 Nc6 (12...d5 13.0-0=) 13.0-0 d5 14.d4 (14.Qb1 e5=) 14...Bd7 15.Qa1 (15.Qd3 Nd8=) 15...Be7 (15...Qa1 16.Ra1 Rg8 17.Ra8 Ke7 18.Nc7=) 16.Qb2= 0-0 17.Ra1 Qb6 18.Nc3 Na5 19.Na4 Ba4 20.Ra4 Nc4 21.Qb1 (21.Qb3 Rc8=+) 21...Qc6=+ 22.Ra2 b5 23.Qa1 Na3 24.Bd3 f5 25.Ne5 Qb7 (25...Qc3 26.Qd1=+) 26.Qd1 (26.Kh1 Bd6=+) 26...Rc8 (26...f6 27.Nf3=+) 27.Qh5 Bf6 28.g4 Be5 29.de5 Nb1 (better 29...Qc7=) 30.gf5+– Nc3?? (better 30...f6 31.fe6 fe5 32.Qe5 Nd2+–) 31.f6 Ne4 32.Qh6 (32.Qh6 Nf6 33.ef6 Rc2 34.Qg7) 1–0. GuestPHTQ – dooooer, freechess.org, 2019.

3.Bb2 Nf6 4.a5=.

3.Bb2 Nf6 4.e3 d5 5.c4 Be6 (5...e6 6.Bc3=+) 6.Na3 (6.c5 b6=) 6...Nbd7 7.Nf3 b5?? (better 7...Bg4=) 8.ab5+– ab5 9.cb5 Qb6 (9...c5 10.bc5 Nc5 11.Ne5+–) 10.Be2 (10.Bd4 c5 11.bc5 Nc5+–) 10...c5 11.bc5 Qc5 (11...Nc5 12.Bd4+–) 12.Nd4 Nb6 13.Ne6 fe6 14.0-0 (14.f4 g6+–) 14...g6 (14...e5 15.d4 ed4 16.Rc1+–) 15.Qb3 Bg7 (15...Qd6 16.Rac1+–) 16.Rfc1 Nc4? (16...Qd6+–) 17.Nc4 dc4 (17...Ra1 18.Ra1 dc4 19.Bc4 0-0+–) 18.Ra8 (18.Ra8 Kf7 19.Bc4 Qc4 20.Rc4 Ra8 21.b6+–) 1–0. DEFFM – GuestGRCC, freechess.org, 2018.

3.Bb2 Nf6 4.e3 g6 5.c4 Bg7 6.Nf3 0-0 7.Qc2 (7.Nc3 d5=) 7...d6 8.Be2 (8.Nc3 a5 9.b5 cb5 10.ab5 Nbd7=) 8...e5 (8...Qb6 9.a5 Qb4 10.0-0=) 9.0-0 (9.Nc3 a5 10.b5 Nbd7=) 9...Nbd7 (9...Bf5 10.d3=) 10.d4 e4 (10...ed4 11.Nd4 Ne5 12.Nc3=) 11.Nfd2+= d5 (11...a5 12.ba5 Ra5 13.Nc3+–) 12.Nc3+– White intends b5 12...Re8 13.b5 Nf8 14.cd5 (14.h3 Ne6+–) 14...cd5 15.h3 (15.Rfc1 a5=) 15...Bd7 (15...a5!?=) 16.Qb3+= Rc8 (16...Be6 17.a5+=) 17.Nd5+– Be6 (17...Nd5!? 18.Qd5 Rc2+–) 18.Nf6 Bf6 (18...Qf6!? 19.Qb4 Bf5+–) 19.d5+– Bd5? (19...Bd7 20.Nc4 Bb2 21.Qb2 Qg5+–) 20.Bf6 Bb3 21.Bd8 Red8 (21...Ba4 22.Ra4 ab5 23.Bb5 Red8 24.Ne4+–) 22.Nb3 f5 (22...ab5 23.Bb5 Rc7+–) 23.ba6 ba6 24.Ba6 Rc2 (24...Rc6 25.Bb5 Rc3 26.Rfc1 Rc1 27.Rc1+–) 25.Nd4 Rb2 (25...Rc7 26.a5 Ra8 27.Bb5+–) 26.Bc4 Kg7 27.a5 Ra8 (27...Rc8 28.Rfc1 Rbb8 29.a6+–) 28.a6 Ra7 (28...Nd7 29.Bb5 Nb6 30.a7+–) 29.Rfb1 Rb1 (29...Rd2 30.Nb5 Ra8 31.a7+–) 30.Rb1 (30.Rb1 Nd7 31.Nc6+–) 1–0. DEFFM – GuestWWRG, freechess.org, 2018.

3.b5? ab5 4.Nc3 d5 –/+.

3.c4 b5 4.cb5 (4.ab5!? e5 5.Bb2+=) 4...ab5= 5.Nc3 (5.Nf3 Nf6=) 5...ba4 (5...e5 6.Bb2 ba4 7.Ra4 Ra4 8.Qa4=) 6.Ra4= Ra4 7.Qa4 Qb6 8.e3 Na6 Exerts pressure on the isolated pawn (8...e6 9.b5=) 9.Ba6 (9.Ba3!?=) 9...Ba6=+ 10.Nge2 e6 11.Nd4 (11.Ba3=+) 11...Nf6 (11...Bb4 12.Ndb5 Bc3 13.Nc3–/+) 12.Nb3? (better 12.b5!? cb5 13.Ndb5=) 12...Bb4–/+ 13.Na2 (13.Ba3 Bc3 14.dc3 d5–/+) 13...Bd6 14.Bb2 Be7 15.f3 (15.Ba3 Qb5 16.Qb5 Bb5–+) 15...0-0 16.Kf2 (16.Nac1 Rb8–+) 16...d5 (16...Ra8 17.Nac1–+) 17.Nd4? (better 17.Bd4!? Qb8 18.Qa6 Qb3 19.Rc1–/+) 17...c5 (17...Qb2!? 18.Qa6 c5 19.Nc6 Qd2 20.Qe2 Qe2 21.Ke2–+) 18.Nc6 Bd6 (18...Bd8 19.Nd8 Qb2 20.Qa5–+) 19.Bf6 gf6 20.Nc3 d4 21.Rb1 (21.ed4 Rc8 Decoy) 21...de3?? (better 21...Qc7 22.Qa6 dc3 23.dc3 Bh2=+) 22.Ke3 (22.de3!? Bb5 23.Qb5 Qc7+–) 22...Qc7 23.Qa6 Bf4 (23...Bh2 24.Ne4+–) 24.Ke2 Rc8?? (24...Bg5 25.g3 f5+–) 25.Rb8 (better 25.Qc8 Qc8 26.Ne7 Kg7 27.Nc8 Bh2 28.Ne4+–) 25...Qc6?? (better 25...Rb8 26.Nb8 Qb8–/+) 26.Qc8 (better 26.Rc8 Qc8 27.Qc8 Kg7 28.Qc5+–) 26...Qc8 27.Rc8 Kg7 28.g3 Be5 (28...Bd6 29.Ne4 Be5 30.Nc5+–) 29.Rc5 Bc3 (29...Bd6 30.Rb5+–) 30.dc3 1–0. afsharian (1610) – CaptainBishop, lichess.org, 2018.

2.a4 Nc6

3.Ba3 Nd4 4.e3 Nb3?? (better 4...Nf5=) 5.cb3+– Nf6. DEFFM – GuestSMLR, freechess.org, 2018.

3.Ba3 e5 4.b5= Ba3 5.Na3 ab5 6.ab5 Nb4 7.e4 Nf6?? (better 7...Qh4 8.d3 d5=) 8.c3+– 1–0. DEFFM – GuestTRSK, freechess.org, 2019.

3.Ba3 e5 4.c3 b5 (4...Nf6 5.b5 Ba3 6.Na3=+) 5.a5 (5.e4!? Rb8 6.Nf3=) 5...Nf6 6.d3 d5 7.e3 (7.g3 d4–/+) 7...Bg4 (7...d4!?–/+) 8.Be2=+ Be2 9.Ne2 Bd6 10.g3 (10.Nd2 Qd7=+) 10...Qd7 11.0-0 Qh3 12.f4?? (better 12.f3–/+) 12...Ng4–+ 13.Rf2 Nf2 14.Kf2 Qh2 15.Ke1 Qh1 16.Kd2 Qd1 (16...Qf3 17.Bb2 0-0-0 18.Qg1–+) 17.Kd1 ef4 (17...h5 18.Nd2–+) 18.gf4 (18.Nf4 Rd8–+) 18...0-0-0 19.Nd2 h5 20.Nf3 h4 21.Kc2 (21.Kd2 Rde8–+) 21...h3 (21...Rde8!? 22.Kd2–+) 22.Rh1 Ne7 (better 22...Rde8!? 23.Bc1–+) 23.Ng5 Rdf8 24.Nh3 (24.Rh3 Rh3 25.Nh3 Nf5–+) 24...Nf5 (better 24...Rh4–+) 25.Nf2? (better 25.e4 de4 26.de4–+) 25...Rh1 26.Nh1 Ne3 27.Kd2 Ng2 28.Nhg3 (28.f5 Rh8 29.Nf2 Be7–+) 28...Bf4 29.Nf4 Nf4 30.Nf5 g6 31.Ne7 (31.Ke3 Nd3 32.Ne7 Kd7 33.Nd5 Ne5–+) 31...Kd7 32.Ke3 Ke7 (32...g5!? 33.Nf5–+) 33.Kf4 Ke6 34.c4 (34.Kg3 g5–+) 34...dc4 35.dc4 bc4 36.Bb2 f6 37.Bd4 g5 38.Kg4 (38.Ke3 Rd8 39.Bb2 Rd3 40.Ke2 Rb3–+) 38...Rg8 (38...Rd8 39.Bb2–+) 39.Be3 (39.Bc3 Rd8–+) 39...c3 40.Bc1 (40.Kf3 Kd5 41.Bc1 f5–+) 40...c2 41.Kf3 Rd8 42.Ke2 Kd5 (better 42...Rd1 43.Be3–+) 43.Kd2 Kc4 44.Kc2 Kb4 45.Bd2 (45.Bb2 Rd6 46.Bc3 Ka4 47.Be1–+) 45...Rd2! 46.Kd2 Ka5 (46...c5!? 47.Ke3–+) 47.Ke3 Kb5 48.Ke4 a5 49.Kf5 a4 50.Kf6 a3 (better 50...g4–+) 51.Kg5 a2 52.Kf5 a1Q 53.Ke6 c5 54.Kd5 (54.Ke7 Qe5 55.Kf8 c4 56.Kf7 c3 57.Kg6 Qe6 58.Kg5 c2 59.Kh5 c1Q 60.Kh4 Qf4 61.Kh5 Qfg4) 54...c4 (54...Qe1 55.Kd6 c4 56.Kc7 Qe7 57.Kc8 Kb6 58.Kb8 Qd8) 55.Kd6 (55.Ke4 Qh1 56.Kf5 Qh7 57.Ke6 c3 58.Kf6 c2 59.Kg5 c1Q 60.Kg4 Qf1 61.Kg5 Qff5) 55...c3 (55...Qf6 56.Kd5 c3 57.Ke4 c2 58.Ke3 c1Q 59.Ke4 Qc4 60.Ke3 Qff4) 56.Kd5 (56.Ke5 c2 57.Ke4 Qe1 58.Kf4 c1Q 59.Kf5 Qf2 60.Ke4 Qce3 61.Kd5 Qfd2) 56...c2 57.Kd6 (57.Ke6 c1Q 58.Kf5 Qf1 59.Ke6 Qaf6 60.Kd7 Q1f5 61.Ke8 Q5e6) 57...c1Q 58.Kd7 (58.Ke6 Qc6 59.Kf5 Qaf6 60.Kg4 Qcf3) 58...Qd4 (58...Qc6 59.Ke7 Qaf6) 59.Ke6 Qce3 (59...Qce3 60.Kf5 Qde4 61.Kf6 Qe6 62.Kg7 Q3h6; 59...Qc6 60.Kf7 Qcf6 61.Ke8 Qdd8) 0–1. afsharian – Wiki1130, lichess.org, 2018.

3.Ba3 e6 4.b5 Ba3 (4...Qf6 5.Nc3 Ba3 6.Ra3=+) 5.Na3= ab5 6.ab5 Nb4 (6...Ne5 7.e3 d5 8.b6 cb6 9.Nb5=) 7.c3 Nd5 8.e4 Ndf6 (8...Nb6 9.Nf3=) 9.e5+= Nd5 10.c4 Nb6 11.d4 Ne7 (11...d6 12.Nf3+=) 12.Nf3+= d6 13.Bd3 0-0 14.0-0 c6? (14...de5 15.Ne5 Nf5+= (15...Qd4?? 16.Bh7 Kh7 17.Qd4+–)) 15.ed6+– Qd6? (15...Ng6 16.bc6 bc6+–) 16.c5 Qd8 17.cb6 Qb6 (17...Bd7 18.Ne5+–) 18.Bh7! Kh7 (18...Kh8 19.Bc2 Qd8 20.Qd3+–) 19.Qd3 g6 (19...Kg8 20.Nc4 Qd8 21.Ra8 cb5 22.Ne3+–) 20.Nc4 Qc7 21.Ng5 (21.Ra8!? cb5 22.Ne3 Qd6+–) 21...Kg7 22.Ra8 Rh8 (22...cb5 23.Ne3 b4+–) 23.Ne5 f6 24.b6! Qb6 25.Ne6! Kh6 (25...Be6 26.Rh8 Combination) 26.Qh3 1–0. DEFFM – GuestJMPT, freechess.org, 2019.

3.Ba3 Nf6 =+.

3.Ba3 h5 4.d4 d5 5.Qd3 (5.b5 Nb8=) 5...Nb8 (5...e5 6.de5 Ne5 7.Qe3=+) 6.b5 Bd7 7.ba6 Ra6 8.g3 (8.Nc3 Nf6=) 8...Bg4 (8...Ra4 9.Bg2–/+) 9.Bh3 (9.Qb5 Nc6 A) 10.Qb7?? Rb6 (10...Nd4 11.Qa6 Nc2 12.Kd2 Na1 13.Qc6 Qd7 14.Qc3=) 11.Qb6 cb6–+; B) 10.Bc5=+) 9...Bh3=+ 10.Nh3 g6 11.Ng5 Rf6 (better 11...h4!?=+) 12.Nc3 c6 13.Rg1 (13.e4 Bg7+=) 13...Bh6= 14.Nf3 g5 15.Ne5 Rf2?? (better 15...Re6=) 16.Kf2+– e6 (16...Nf6 17.e4 Bg7 18.ed5 Nd5 19.Nd5 cd5 20.Rgb1 Be5 21.de5+–) 17.Bb4 (17.e4!? Bg7+–) 17...Na6 18.Nc6! bc6?? (better 18...Qb6 19.Nb5 bc6 20.Nd6 Kd7+–) 19.Qa6 Qc7 (19...Kd7+–) 20.Ba5 Qd6 21.Qc8 Ke7 22.Qb7 (22.Rgb1 Bg7 23.Rb7 Kf6+–) 22...Kf6 (22...Qd7 23.Rgb1 Qb7 24.Rb7 Kf6 25.Bb6+–) 23.Rgf1 (better 23.Bc7 Qe7 24.Be5 Kf5+–) 23...Ne7 (23...Kg7 24.Kg2 Qf8 25.Bc7+–) 24.Kg1 (better 24.Bc7 Rb8 25.Qb8 Qd7 26.Be5 Kg6+–) 24...Nf5 25.g4! hg4 26.Bb4 (better 26.e4!? Qb8 27.Qb8 Rb8+–) 26...Rb8 27.Bd6 (better 27.Qf7! Kf7 28.Bd6 Rb2+–) 27...Rb7 28.Be5 Ke7 29.a5 Ra7 30.Bb8 (30.a6 f6 31.Rfb1 Nd6 32.Bd6 Kd6+–) 30...Rb7 (30...Ra8 31.Rfb1 Nd4+–) 31.Be5 Ra7 32.a6 Ne3 (32...Nd6 33.Rfb1 f6 34.Bd6 Kd6 35.Rb7 Rb7 36.ab7+–) 33.Rf2 (33.Rfb1 Ra8 34.a7 f6 35.Rb7 Ke8 36.Rb8 Kf7 37.Ra8 fe5+–) 33...Nc2 (33...f5 34.Ra4+–) 34.Ra2 (34.Rb1 Ra6 35.Rb7 Ke8 36.Rff7 Ra1 37.Kf2 Bf8+–) 34...Nb4 (34...g3 35.hg3 (35.Rc2?! gf2 36.Kf2 Ra6+–) 35...Ne3 36.Bf6 Kd6 37.Bd8+–) 35.Bf6 (35.Ra4!? Na6 36.e4 de4 37.Ne4 f5+–) 35...Kd7 36.h4 (better 36.Ra4 Bf8 37.Rg2+–) 36...Na2= 37.Na2? (better 37.hg5 Nc3 38.gh6 Ra6 39.h7 Ra1 40.Rf1+–) 37...Ra6?? (37...gh4 38.Nb4 Be3 39.Kg2 h3 40.Kg3 Bf2 41.Kf2–/+) 38.e4?? (better 38.hg5 Bf8 39.Nc1+–) 38...gh4–+ 39.Kg2 de4 (39...Be3 40.Re2 h3 41.Kg3–+) 40.Nb4 Rb6 41.Rb2? (41.Nc2–+) 41...Be3 42.Bh4 (42.Rb3 h3 43.Kg3 Bd2 44.Kg4 e3–+ (worse 44...Bb4 45.Rh3 Be7 46.Bg7–+)) 42...f5 (42...Bd4!? 43.Bf2 e5 44.Bd4 ed4 45.Re2 Rb4 46.Re4–+) 43.Bf2 (43.Bf6–+) 43...Bf2 44.Kf2 f4 45.Kg2 Rb5 (better 45...e5 46.de5 Ke6–+) 46.Ra2 (46.Kg1–+) 46...Rb4 47.Ra7 Kd6 48.Rg7 g3 49.Rg4 (49.Rg8–+) 49...Rb2 50.Kh3 Rh2 0–1. venaverme – bluefrog13, gameknot.com, 2018. (=1.a4 a6 2.b4 Nc6)

3.c3 e5 4.Ba3 d5 5.b5 ab5 (5...Nce7!?=+) 6.ab5= Ba3 7.bc6 bc6 (7...Qd6 8.Qb3 (8.Na3?! Ra3 9.Ra3 Qa3=) 8...Nf6 9.cb7 (9.Na3?! Qc6 10.Nf3 Nd7+–; 9.Ra3?! Ra3 10.Na3 Qc6+–) 9...Bb7 10.Qb7+– (10.Na3?! 0-0+–)) 8.Na3 Be6 (8...Nf6 9.Nf3 Qe7 10.Nc2 Ra1 11.Na1+–) 9.Nf3 Qf6 (9...f6 10.d4+–) 10.Nc2 (10.d4 Qe7 11.Qb3 e4+–) 10...Ra1 11.Qa1 Ne7 (11...Bg4 12.d4 Bf3 13.ef3+–) 12.Qa7 Kd7 (12...e4 13.Nfd4+–) 13.d4 ed4 (13...Ng6 14.de5 Ne5 15.Ne5 Qe5 16.Nd4+–) 14.cd4 (14.Qd4?! Qd4 15.cd4 Kd6+–) 14...h6 (14...Ng6 15.e3+–) 15.Ne5 Kd8 16.Nb4 Bd7 (16...Bc8 17.Qc5 Bd7 18.e3+–) 17.Qa8 Nc8 18.e3 (18.Nbc6 Bc6 19.Nc6 Kd7 20.Ne5 Kd8 21.Qd5 Nd6+–) 18...Re8 (18...Ke8 19.Nbc6 (< 19.Nec6 Qg6+–) 19...Qe6 20.Nb4+–) 19.Nbc6 (< 19.Nec6 Bc6 20.Nc6 Kd7 21.Nb8 Ke7 22.Qd5 Nb6 23.Qc5 Qd6 24.Nc6 Kf8 25.Qd6 cd6+–) 19...Bc6 20.Nc6 (< 20.Qc6 Re5 21.Qf6 gf6 22.de5 fe5+–) 20...Kd7 21.Bb5 Kd6 (21...Ke6 22.Nb4 Rd8+–) 22.Nb4 Qf5 23.Qc6 Ke7 24.Qe8 Kf6 25.Qc6 Kg5 26.h4 Kg4 27.Be2 (27...Qf3 28.Bf3 Kf5 29.g4#) 1–0. honkey7 – Talman, Live Game Caissa's We

3.c3 e5 4.Bb2 Be7 5.e3 (5.b5 Na5=+) 5...Bf6 (5...d5 6.d4=+) 6.b5 ab5 (6...Nce7 7.d4=) 7.ab5= Ra1 8.Ba1 Nb8 (8...Nce7 9.d4=) 9.c4 (9.d4 d6=) 9...c6 (9...d6 10.d4=) 10.d4 ed4 (10...d6 11.Nf3 e4 12.Nfd2+=) 11.ed4 (11.Bd4 d6+=) 11...Ne7 12.Bd3 0-0 (12...d5 13.c5=) 13.Nf3 (13.Qh5 h6=) 13...d6 (13...d5 14.c5=) 14.Qc2 (14.0-0 cb5 15.cb5 Ng6=) 14...g6 (14...Ng6 15.0-0=) 15.0-0 Bf5 (15...cb5 16.cb5 Nd5 17.Be4=) 16.Nc3 (16.Na3 Re8=) 16...Bd3 (16...Bg4 17.Ne4 Bg7 18.Ned2+=) 17.Qd3+= Re8 (17...d5 18.c5+=) 18.Ne4+– Bg7 19.d5 c5?? (better 19...cd5 20.cd5 Ba1 21.Ra1 Nd7+=) 20.Bg7+– Kg7 21.Qc3 Kh6 (21...Kf8 22.Nfg5 Ng8 23.Nh7 Ke7+–) 22.Nfg5 Rf8 (22...Qc8 23.Nf7 Kh5 24.Nf6 Kh4 25.Qg3) 23.Qh3 (23.Qh3 Kg7 24.Qh7) 1–0. DEFFM – GuestRBRM, freechess.org, 2018.

3.c3 e5 4.d3 d5 5.e3 (5.Nf3 Nf6=+) 5...g6 (5...d4!?–/+) 6.Ne2 (6.Nf3 Nf6=) 6...f5 (6...d4 7.Na3 dc3 8.b5 ab5 9.ab5–/+) 7.g3 (7.d4 Nf6=) 7...b6 (7...d4 8.ed4 ed4 9.Bg2=) 8.Bg2= Bb7 9.0-0 Qd6 (9...Nf6 10.Bb2=) 10.f4 0-0-0 (better 10...e4=) 11.e4?? (better 11.b5 Na5 12.fe5 Qe5 13.Nd4+=) 11...d4?? (better 11...de4 12.d4 ed4–+) 12.Ba3 (12.b5 Nb8 13.Ba3 Qe6 14.Bf8 Rf8 15.fe5 dc3+–) 12...b5? (12...dc3 13.b5 Nb4 14.Bb4 Qb4 15.Nbc3 ef4 16.Rf4 Bh6+=) 13.a5?? (better 13.ab5!? ab5 14.fe5 Qe5 15.Bb2+–) 13...Qe6 (13...fe4 14.Be4 Nf6 15.Bg2–/+) 14.Nd2 (better 14.ef5 gf5 15.c4=) 14...dc3–/+ 15.Nb3 Nb4 (15...Bb4 16.ef5 Qd6 17.fe5 Ne5 18.Bb7 Kb7 19.Bb4 Qb4 20.d4=) 16.Qb1? (better 16.ef5 gf5 17.Bb7 Kb7 18.Bb4 Bb4 19.fe5 Qe5 20.Nf4–/+) 16...c2–+ (16...Nd3?! 17.Bf8 Rf8 18.ef5 Rf5 19.Bb7 Kb7 20.Rd1–/+) 17.Qc1 (17.Qb2 Nd3 18.Qc2 Ba3 19.Ra3–+) 17...Qb3 18.Bb4 Bb4 19.Rf3 (19.fe5 Rd3 20.Nf4 Bd2 21.Nd3 Bc1 22.Nc1 Qe3 23.Kh1 Be4–+) 19...Rd3 (19...fe4 20.Re3 Rd3 21.Rd3 ed3 22.Bb7 Kb7 23.Qf1–+) 20.fe5 (20.Qf1 ef4 21.Rd3 Qd3 22.gf4 Qe3 23.Kh1 Be4 24.Be4 Qe4 25.Qg2–+) 20...Rf3 21.Bf3 Qf3 22.Qf1 Bc5 23.Nd4 Bd4 24.Qf2 Qf2 25.Kh1 Be4 0–1. Paul593 – Delboy Smith (1710), ChessWorld.net, 2008.

3.c3 e5 4.e3 b6 5.Bb2 a5 (better 5...Nf6!?–/+) 6.b5+= Qg5?? (better 6...Nce7+=) 7.Nf3 Qf5 8.bc6 dc6 9.Be2 (9.Na3 Nf6+–) 9...Nf6 10.d3 Bc5 (10...Bd6 11.Nbd2+–) 11.d4 ed4 12.cd4 Bb4 13.Nc3 Ne4 14.Rc1 Nc3 (14...Bc3 15.Bc3 (15.Rc3?! Nc3 16.Bc3 Ba6+–) 15...0-0 16.0-0+–) 15.Bc3 (15.Rc3?! f6+–) 15...Qe4 (15...Ba3 16.Rb1+–) 16.Bd3 Qg4 (16...Qe7 17.Ne5+–) 17.0-0 (17.h3 Qe6+–) 17...Ba3 18.Ra1 Bb4 (18...Bd6 19.Qc2+–) 19.Bb4 (19.Qc2 Bb7+–) 19...ab4 20.Qc2 0-0 21.Qc6 Ra5 (21...Ra7 22.Ne5 Qg5 23.g3+–) 22.Ne5 (better 22.Qc7 Ba6 23.Qb6 Bd3 24.Qa5 Bf1 25.Kf1 Rb8+–) 22...Qh4 (22...Qe6 23.Qc7 Ba6 24.Ba6 Ra6 25.Nc6+–) 23.Qc7 Ba6 (23...Qd8 24.Qd8 Rd8 25.Nc6+–) 24.Qb6 (24.Ba6 Ra6 25.Rfb1 Qf6+–) 24...Bd3 (24...Re5 25.Qa6 Rh5 26.h3+–) 25.Nd3 Rg5 (25...Rh5 26.Qc7+–) 26.Qc7 (26.Nf4 Rf5+–) 26...Qg4 (26...Rg2 27.Kg2 Qe4 28.Kg1 Qg6 29.Qg3 Qd3 30.Rfb1+–) 27.Nf4 Qg2 (27...Ra8+–) 28.Ng2 1–0. GuestGCPD – GuestLPWT, freechess.org, 2017.

3.c3 e6 4.Bb2 Qh4 5.Nf3= Qf4 (5...Qf6 6.d4=) 6.e3 Qe4 (6...Qf6 7.d4+=) 7.b5 (7.d4 Nf6+=) 7...ab5= 8.ab5 Ra1 9.Ba1 Na5 (9...Ne5 10.Ne5 Qe5 11.d4=) 10.d3 (10.c4 b6+= (10...Nc4? 11.Nc3 Qg4 12.h3+–)) 10...Qf5 11.Nd4 (11.c4 Nf6+=) 11...Qg5 (11...Qg6 12.Nd2+=) 12.Qa4 (12.Nd2 Nf6+=) 12...b6 13.Nd2 (13.Nf3 Qh6+=) 13...Bc5 (13...Bb7 14.N4f3 Qd8 15.Be2+=) 14.N2f3 (14.Ne4 Qe7+–) 14...Qf6 (14...Qg6 15.Ne5 Qh5 16.Ndf3=) 15.Be2 (15.c4 Qg6+–) 15...Bd4 (15...Bb7!?+=) 16.cd4+– Nh6? (16...Ne7 17.d5! Qg6 18.de6 fe6 19.0-0+–) 17.Qa3 (better 17.d5 Qg6 18.Qf4+–) 17...Bb7 (17...d5 18.0-0+–) 18.d5 Qf5?? (18...Qg6 19.Qc3 Bd5 20.e4+– (20.Qg7?! Rg8 21.Qc3 c5+=)) 19.e4 (better 19.Bg7!? Rg8 20.Bh6 Qd5+–) 19...Qg4 20.0-0 (better 20.h4 f6 21.Ne5 Qg2 22.Bf3 Qh1 23.Bh1 ed5 24.Nf3 de4 25.de4 Be4 26.Qe3+–) 20...ed5+= 21.h3 (21.ed5 Bd5 22.Rc1 c5 23.bc6 dc6+–) 21...Qg6 22.Ne5 (22.ed5 Bd5 23.Qc3 0-0=) 22...Qe6= 23.Bg4 Ng4 24.Ng4 de4?? (24...Qg6 25.ed5 Bd5 26.Rc1+=) 25.de4 (better 25.Bg7 Qe7 26.Nf6 Kd8 27.Qe7 Ke7 28.Bh8 ed3 29.Rd1+–) 25...Be4?? (25...f6 26.Qg3 A) worse 26...Be4 27.f3+–; B) worse 26...Qe4 27.Bf6 Qg2 28.Qg2 Bg2 29.Re1 (worse 29.Kg2 gf6 30.Nf6 Kf7=+) 29...Kf7 30.Re7 Kf8 31.Kg2 gf6 32.Rd7+–; C) 26...d6=+) 26.Qc3 (26.Bg7 Rg8 27.Re1 f5 28.Nf6 Kf7 29.Ng8 Kg7+–) 26...f6 (26...Kd8 27.Qg7 Re8 28.Bf6 Kc8 29.Re1+–) 27.Re1 (27.f3 Bf3 28.Qf3 0-0+–) 27...0-0 (27...c5 28.bc6! Qc6 29.f3+–) 28.f3 h5 (28...c5 29.fe4 Nc4 30.Qg3+–) 29.Re4 (29.Nf2 Qc4 30.fe4 Qc3 31.Bc3 h4+–) 29...Qa2 (29...Qb3!? 30.Ne3 Qb5+–) 30.Ne3+– Qb1 (30...c5 31.bc6! Nc6 32.Bb2+–) 31.Kh2 Qb5 32.Bb2 (32.Qc7!? Nb3 33.Bc3 Qc6 34.Qc6 dc6+–) 32...d5 (32...c6 33.Ba3 d5 34.Rb4+– (34.Bf8?! de4 35.Bd6 Qd3=)) 33.Rh4 (better 33.Re7 Nc4 34.Qd3+–) 33...g6?? (better 33...Re8+=) 34.Qc2+– Kg7 35.Rh5 (35.Qc7 Rf7 36.Bf6 Kf8 37.Qd6 Kg8+–) 35...gh5?? (35...Qc6 36.Nf5! gf5 37.Qf5 Qd6 38.g3 Rh8 39.Qg4 Kf8 40.Rh8 Ke7 41.Rh7 Ke8 42.Qg6 Kd8 43.Qg8 Qf8 44.Qf8) 36.Nf5 Kh8 (36...Kg6 37.Nd6 f5 38.Nb5 Nc4 39.Nc7 b5+–) 37.Ne7 (37.Qc7 Qd7 38.Qd7 Rf7 39.Qf7 Nc4 40.Bf6) 37...Rf7?? (37...Qb4 38.Ng6 Kg7 39.Bc3 Qd6 40.g3–+) 38.Ng6 (38.Qg6 Re7 39.Bf6 Rg7 40.Qg7) 38...Kg7 (38...Kg8 39.Nf4 Nc4 40.Qg6 Rg7 41.Qf6 Nb2–+) 39.Qf5?? (better 39.Nf4 Kf8 40.Ba3 c5 41.Nd5–+) 39...Qb2 40.Qh5 f5 (40...Nc4 41.Nf4 Qe5 42.Qg4 Kh8 43.Kg1 Qe1 44.Kh2–+) 41.f4?? (better 41.Qh8 Kg6 42.Qb2=) 41...Qf6–+ 42.Ne5 Rf8 (better 42...Re7–+) 43.Nd7 Qh6 (better 43...Qe7 44.Nf8 Kf8 45.Qf5 Qf7 46.Qc8 Kg7 47.Qg4 Kf6 48.Qg5 Ke6 49.g4–+) 44.Qh6 Kh6 45.Nf8 Nc4 0–1. DEFFM – fumaguera, freechess.org, 2016.

2.a4 d6

3.Bb2 b6 4.e3 Bb7 5.b5 a5 (5...e5 6.d4 Nd7 7.ba6 Ba6 8.Ba6 Ra6 9.d5=) 6.Nf3 Nd7 7.d4 Ngf6 8.Nbd2 g6 (8...Rc8 9.c4+=) 9.Be2 Bg7 10.c4 Ne4 11.Ne4 Be4 12.0-0 0-0 13.Ng5 Bb7 14.f4 h6 15.Bf3 Bf3 16.Nf3 e6 17.e4 f5 18.Re1 White intends e5 18...Qf6 19.Qd3 (19.e5 Qe7+–) 19...Rad8 (19...fe4 20.Re4 Qf5 21.Qe3+=) 20.Rad1 (20.e5 Qe7+–) 20...Qf7 (20...fe4 21.Qe4 Rde8 22.Rd2+=) 21.Ba3 (21.e5 Qe7+–) 21...Rfe8 (21...fe4!? 22.Qe4 Rde8+=) 22.e5+– de5 23.fe5 (23.de5 Ne5 24.Qd8 Nf3 25.gf3 Rd8 26.Rd8 Kh7=; 23.Ne5?! Ne5 24.fe5 Rd7+–) 23...g5 24.Qc3 g4 25.Nd2 Bf8 26.c5 (26.Rf1 Ba3 27.Qa3 Qe7+–) 26...Bg7 (26...Qg6 27.Rf1+–) 27.Nc4 Bf8 28.Qe3 (28.cb6 cb6 29.Bf8 Rf8+–) 28...Kh7 (28...f4 29.Qf2 f3 30.c6+–) 29.cb6 cb6 30.Bf8 Rf8 31.Nd6 Qg7 32.Rf1 Qg6 33.Rc1 Nf6 34.Rc7 Kh8 35.ef6 Rd6 36.Qe5 Rd5 (36...Rdd8 37.Rc6 (worse 37.Qe6 Qf6 38.d5 Qe6 39.de6 Rd4+–) 37...Qf6 38.Rf5 Qe5 39.Rf8 (39.de5?? Rf5 40.Rd6 Rdf8–+; 39.Re5?! Rd4 40.Rce6 Ra4=) 39...Rf8 40.de5+–) 37.Qe6 Rd4 38.Qe7 (better 38.Rc8 Rc8 39.Qc8 Qg8 40.Qf5+–) 38...Rdd8?? (better 38...Kg8+–) 39.Qg7+– Qg7 40.fg7 (40.Rg7?! Rf6 41.Rg4 Kh7=) 40...Kg8 41.gf8Q Rf8 42.Rc6 1–0. GuestLFBW – GuestJHZP, freechess.org, 2018.

3.Bb2 c6 4.e3 Nd7 5.Nf3 f6 (5...Ngf6 6.Be2=) 6.d4 (6.Nc3 Nh6+–) 6...Qb6 (6...Nh6 7.Nbd2+–) 7.b5 ab5 (7...ab5 8.ab5 Decoy; 7...cb5 8.ab5 Decoy) 8.ab5 Ra1 9.Ba1 Qa5 (9...e6 10.bc6 bc6 11.Bd3+–) 10.Bc3+– Qb6 11.Bd3 Nb8 (11.b4 Nh6!?+–) 12.0-0 e5 (12...d5 13.Nbd2+–) 13.de5 (13.Nbd2!? cb5 14.Qb1 Bd7+–) 13...fe5 14.Ng5 c5?? (better 14...Nf6+–) 15.Qh5 Kd8 (15...g6 16.Bg6! Kd8 17.Nf7 Kc7 18.Nh8+–) 16.Nf7 Kc7 17.f4 (17.Nh8 Nf6 18.Qf7 Nbd7+–) 17...Nd7 (17...c4 18.Bc4 Qe3 19.Kh1 Nf6+–) 18.fe5 g6 (18...c4 19.Bd4 Qa5 20.Bc4+–) 19.ed6 Kb8 (19...Bd6 20.Qh4 Kb8 21.Nd6 Qd6 22.Bh8+–) 20.Qg5 Bh6 (20...Ngf6 21.Bf6 Nf6 22.Rf6+–) 21.Nh6 (21.Bh8 Bg5 22.Ng5 c4–/+) 21.b4 Nh6 22.Bh8 Nf7 (22...c4 23.Qh6 cd3 24.cd3 Qb5 25.Qh7 Qd3+–) 23.Rf7 c4 24.Bc4 Qd6 25.Nc3 (25.Rd7 Bd7 26.Be5 Kc7 27.Bd6 Kd6 28.Qf6 Be6 29.Qe6 Kc5 30.Qc8 Kb6 31.Qd8 Kc5 32.Qd4 Kb4 33.c3 Ka5 34.Qa7) 25...Ne5 26.Be5 Qe5 (26...Ka7 27.Bd6 Bf5 28.Qd8 Bc2 29.b6) 27.Qe5 (27.Qe5 Ka7 28.Qc7 Bd7 29.Rd7 h6 30.Qb7) 1–0. DEFFM – GuestWWPT, freechess.org, 2018.

3.Bb2 Nc6 4.b5= Na5 5.e3 Nf6 6.c4 (6.Be2 c6=) 6...Bd7 7.Bc3 b6 (7...c5 8.Nf3=) 8.Qf3 (8.d4 c6+=) 8...Nb3 (8...Bg4 9.Qg3 e5 10.f4=) 9.Ra3 Nc5 10.d4 (10.Bf6 ef6 11.Nc3 Ne6=) 10...Nce4=+ 11.Bd3 (11.h3 ab5 12.cb5 e6=+) 11...Nc3 (better 11...Bg4!? 12.Qg4 Ng4 13.Be4 Nf6 14.Ba8 Qa8–/+) 12.Nc3= Bg4 13.Qc6 (13.Qb7 e5=) 13...Bd7 14.Qf3 g6 15.Be4 (15.Nge2 ab5 16.cb5 d5+=) 15...Ra7 (15...Ne4 16.Qe4 e6 17.Ra2=) 16.Bc6+= White intends d5 16...Bg7 17.Nge2 0-0 18.d5 (18.Bd7 Qd7 19.Qc6 e5=) 18...ab5 19.cb5 Bg4 20.Qf4 Be2 21.Ne2 Nh5 (21...e6 22.Nc3=) 22.Qg5 (22.Qc4 Nf6+=) 22...e5 (22...Nf6 23.0-0+=) 23.de6?? (better 23.Qd8 Rd8 24.Kd2+–) 23…Qg5–+ 0–1. AleksandrNekhoroshik (1695) – Pvsklaci (1735), lichess.org, 2020.

3.Bb2 Nc6 4.b5 Ne5 5.Nf3=.

3.Bb2 Bd7 4.e3 (4.Nc3 e5=) 4...e5 5.Nf3 (5.Nc3 Nf6=+) 5...h6 (5...Nf6 6.Be2=+) 6.c4 (6.Nc3 Nf6=) 6...Nf6 7.Be2 Be7 (7...e4 8.Nd4=) 8.d4 (8.0-0 0-0=) 8...e4 9.Nfd2 0-0 (9...d5 10.cd5 Bb4 11.Qb3=) 10.b5 (10.d5 a5 11.b5 Bf5+=) 10...ab5 11.ab5 Ra1 12.Ba1 d5 (12...c6 13.bc6 bc6 14.Nc3=) 13.cd5+= Bb4 (13...Bf5 14.Nc3+=) 14.Qb3 Qe7 15.0-0 Bd2 (15...Rd8 16.Nc3 Bf5 17.Bb2+=) 16.Nd2+– Bg4 (16...Bf5 17.Bb2 Rd8 18.Bc4+–) 17.Bc4 Nbd7 18.Bc3 Nb6? (better 18...Ra8 19.Bb4 Qe8+–) 19.Bb4+– Qd7 (19...Qd8 20.Bf8 Qf8 21.Ra1+–) 20.Bf8 Kf8 21.Ra1 Nc4 (21...Qd6 22.Qc2 Qe7 23.Ra7+–) 22.Qc4 (22.Ra8 Ke7 23.Qc4 Qd6+–) 22...Nd5 (22...Kg8 23.Ra7 Qd8 24.Rb7 Nd5 25.Qc6+– (25.Ne4?! Qa8 26.Rb8 Qb8 27.Qd5 Be2+–)) 23.Ra8 Ke7 24.Ne4 b6 25.Ng3 h5 26.h4 f5 27.f3 Ne3 (27...f4 28.Ne2 Bf3 29.gf3 fe3+–) 28.Qg8 Qd4 (28...Kf6 29.fg4 fg4 30.Re8 Qe8 31.Qe8 Nd5 32.Nh5 Kf5 33.Ng7 Kf6 34.Qf8 Kg6 35.h5 Kg5 36.Qf5 Kh4 37.h6 Nc3 38.Qf6 Kg3 39.Nh5) 29.Re8 (29.fg4?? Ng4 30.Kh1 Qd1 31.Nf1 Qf1) 29...Kd6 30.Rd8 (30.Rd8 Kc5 31.Rd4 (31.fg4?! Qa1 32.Kf2 Ng4 33.Ke2 Qb2 34.Kd1 Ne3 35.Ke1 Ng2 36.Kf1 Ne3 37.Ke1 Ng2 38.Kf1 Ne3 39.Ke1 Ng2=) 31...Kd4 32.Qg7 Kd3 33.fg4 fg4 34.Qd7 Kc3 35.Ne2 Kb4 36.Qe7 Kb5 37.Qe3+–; 30.fg4?? Ng4 31.Re3 Qe3 32.Kh1 Qe1 33.Nf1 Qf1) 1–0. DEFFM – happyvutter, freechess.org, 2018.

2.a4 e5

3.Ba3 Nc6 4.b5 Ba3 5.Na3 ab5 6.Nb5 Nge7 7.e4 (7.e3 0-0=+) 7...0-0 (7...d5 8.ed5 Nd5 9.Bc4–/+) 8.c3 (8.Bc4 d5 9.ed5 Nb4=+) 8...d5–/+ 9.ed5 (9.d3 d4–/+) 9...Nd5 10.Nf3 e4 11.Ng1 (11.Nfd4 Ne5–+) 11...Qe7 (11...Re8 12.Ne2–+) 12.Qb3 Be6 (12...Nf4–+) 13.Bc4 (13.Qb1!? Nf6 14.Ne2–/+) 13...Nf4 (13...Na5 14.Qa3 Nc4 15.Qe7 Ne7 16.Nc7–+) 14.Be6 Nd3 (14...Ne6 15.Kf1–+) 15.Kf1 (15.Ke2 fe6 (15...Qe6?! 16.Qe6 fe6 17.Nh3=) 16.Nh3 Qf7–+) 15...fe6 (15...Qe6?! 16.Qe6 fe6 17.Nh3=+) 16.Nd4?? (better 16.f3–+) 16…Rf2 0–1. afsharian – jona0508 (1630), lichess.org, 2018.

3.Bb2 Bb4 4.Be5 d6?? 5.Bg7+– Qe7 6.Bh8 f6 7.e3 Bf5 8.c3 Bc5 9.d4 Ba7 10.Bd3 Bd3 11.Qd3 Nd7 12.Nf3 0-0-0 13.0-0 Nh6 14.Bf6! Nf6 15.c4 d5 16.Nc3 Ne4 17.Nd5 Qe6 18.Rab1 Nf5 19.Qb3 Nh4 20.Qb7 Kd7 21.Qc7 Ke8 22.Nh4 Nd2 23.Qh7 Qe4 24.Qh8 Kf7 25.Rb7 Ke6 26.Re7 (26…Kd6 27.Qd8 Kc6 28.Qc7; 26.Qf6) 1–0. gtate – baxter, net–chess.com, 2001.

3.Bb2 Bb4 4.Be5 Nf6 5.e3 c5 6.c3= Ba5 7.Bd3 (7.Qf3 Nc6 8.Bf6 Qf6 9.Qf6 gf6=) 7...Nc6 (7...d5 8.Ne2=+) 8.Bd6= Qb6 9.Qc2 Nd8 10.Be5 Qe6 11.Nf3 d6 (11...d5 12.0-0=) 12.Bf6 Qf6 13.0-0 (13.Be4 Qe6=) 13...Bg4 (13...d5 14.e4 (14.Bh7? Bc7–+) 14...c4 15.Be2=) 14.Be4 Rb8 15.Na3 Ne6 (15...Bc7 16.d4+=) 16.Nc4 Bc7 17.a5 Ng5 18.Ng5 Qg5 19.f4 Qh5 20.h3 Be2 21.Qa4 Kd8 22.Rf2 Re8 (22...d5 23.Bd5! Qd5 24.Re2+–) 23.g4 Qh3 (23...Bg4 24.hg4 Qg4 25.Rg2+–) 24.Bf5+– Threatening mate... how? 24...Re7 25.Re2 g6 26.Rh2 Qg3 27.Rg2 Qf3 28.Bc2 h5 (28...f6 29.Rb1+–) 1–0. onur604 (2320) – RomaninDelNorte (2160), lichess.org, 2020.

3.Bb2 Nc6 4.b5 ab5 5.ab5 Ra1 6.Ba1 Nd4 7.e3 Nb5? 8.Bb5+– c6 9.Be2 Qe7 10.Nf3 d6 11.0-0 h6 12.d4 e4 13.Nfd2 d5 14.c4 Nf6 (14...Qg5 15.Qa4 Bd6 16.Qa8+–) 15.cd5 cd5 16.Qa4 Bd7 17.Qa8 Qd8 18.Qb7 Be7 (18...Bd6 19.Nc3 Qc7 20.Qc7 Bc7 21.f3 ef3 22.Bf3+–) 19.Nc3 0-0 (19...Qc8 20.Qb3 Qa8+–) 20.Nd5 Nd5 21.Qd5 Bf6 (21...Qc7 22.Ne4 Be6 23.Qh5+–) 22.Ne4 Be6 23.Nf6 Qf6 24.Qb5 Qg5 (24...Bf5 25.d5 Qg6 26.Rd1+–) 25.Qg5 hg5 26.e4 f6 27.d5 Bf7 28.d6 (28.d6 Be6 29.e5+–) 1–0. DEFFM – GuestMMZS, freechess.org, 2020.

3.Bb2 Nc6 4.b5 ab5 5.ab5 Ra1 6.Ba1 Nd4 7.e3 Ne6 8.Be5 d6 9.Bb2 b6 (9...Nf6 10.Nf3+–) 10.Nf3 h6 11.d4 Nf6 12.Bd3 Be7 13.Nbd2 Ng5 (13...0-0 14.0-0+–) 14.d5! Bg4 (14...Nd5 15.Bg7 Pinning (15.Bg7 Deflection; 15.Bg7 Clearance)) 15.c4 0-0 16.0-0 Qd7 17.Qc2 Nf3 18.Nf3 (18.gf3 Bh3 19.Ra1 Qc8+–) 18...Bf3+– 19.Bf5 Qd8 20.gf3 Nd7 21.Bh7 Kh8 22.Bd3 (22.f4 Bf6 23.Bf5 Bb2 24.Qb2 Ne5+–) 22...Bf6 23.Ba3 Ne5 24.Be4 Bh4 (24...Qe7!?+–) 25.f4 Ng4 26.Bf5 Nh2?? (better 26...h5+–) 27.Kh2 Bf2 (27...Bf6+–) 28.Rf2 Qh4 29.Kg2 Re8 30.Qc3 1–0. DEFFM – GuestPVCG, freechess.org, 2019.

3.Bb2 Nc6 4.b5 ab5 5.ab5 Ra1 6.Ba1 Nd4 7.e3 Nf5 8.Be5 d6 9.Bb2 Nf6 (9...d5 10.Nf3+–) 10.Nf3 (10.Bf6 Qf6 11.Nc3 Qd8+–) 10...Be7 (10...d5 11.Bd3+–) 11.Be2 (11.Bd3 d5+–) 11...0-0 12.0-0 g6 (12...d5!?+–) 13.c4 Ng7 (13...Re8 14.Qc2+–) 14.Ng5 (14.Qc2 Be6+–) 14...Nd7 (better 14...d5+–) 15.Nf3 Nc5?? (15...Nf6 16.Qc2 Be6+–) 16.Nc3 c6 (16...Be6 17.Qc2+–) 17.d4 Nce6 (17...Nd7 18.Qd3+–) 18.d5 Nc5 (18...cd5 19.Nd5 Nc5 20.Qd4+–) 19.dc6 bc6 20.bc6 Bf6 21.Nd4 (21.Qd2 Qb6+–) 21...Bd4 (21...Nge6 22.Ncb5+–) 22.ed4 Nce6 23.d5 Nf4 (23...Nc7 24.Ne4 Nce8 25.Qd4+–) 24.Nb5 (24.Bf3 Bf5+–) 24...Ne2 (24...Qg5 25.g3 Ne2 26.Qe2+–) 25.Qe2 Nf5 26.Qd2 f6 27.g4 (27.Qb4 Qb6+–) 27...Nh4 (27...Ng7 28.Qf4 Ne8 29.Ra1+–) 28.Qf4 g5 29.Qd6 Qb6 (29...Qe8 30.Nd4 (30.Bf6 Qe4 31.Qg3 Rf6=+) 30...Bg4 31.Qg3+–) 30.h3 (30.Ba3 Ng6+–) 30...Qa5 31.Bf6 Rf6 (31...Nf3 32.Kh1 Qa2+–) 32.Qf6 Qd2 33.Nd6 Qd3 34.Qf7 Kh8 35.Qf8 1–0. DEFFM – GuestMHLK, freechess.org, 2020.

3.Bb2 Nc6 4.b5 ab5 5.ab5 Ra1 6.Ba1 Nd4 7.e3 Nf5 8.Be5 f6 9.Bb2 Bc5 10.Bc4 (10.e4!? Qe7 11.Nc3 d5+–) 10...Nge7 11.d4 Bb4 (11...Bb6 12.Ne2+–) 12.c3 Ba5 (12...d5 13.Bd3 Bd6 14.c4+–) 13.e4 (13.Nf3 d5 14.Bd3 Nd6+–) 13...Nd6 (better 13...d5!? 14.ed5 Nd5+=) 14.Bd3 0-0 (14...b6 15.Nd2+–) 15.Ne2+– Re8 16.0-0 f5 (16...Nf7 17.c4+–) 17.Qb3 Kh8 (17...Nf7 18.e5+– (18.ef5?! Nf5 19.Bf5 Re2+–)) 18.e5 Ne4 19.f3 Ng5 20.Nd2 h6 (20...d5+–) 21.Nc4 b6 22.Ra1 Bb7 23.Na5 ba5 24.Ra5 (better 24.Nf4 d6 25.e6 d5+–) 24...d5 (24...d6 25.f4 Ne4+–) 25.Nf4 c5 (25...Qc8 26.Ra7 Qb8 27.Qa2+–) 26.bc6! Qa5 (26...Bc6 27.Ra7 Combination; 26...Nc6 27.Ng6 Double attack (27.Qb7 Discovered attack; 27.Rd5 Deflection; 27.Qb5 Decoy)) 27.cb7 Rb8 28.Ba3 Qc7 (28...Rb7 29.Qb7 Qa3 30.Qe7 Qc1 31.Kf2 Qd2 32.Ne2 Qd3+–) 29.Be7 Rb7 (29...Qb7 30.Qb7 Rb7 31.Bf5+–) 30.Qd5 Kh7 (30...Rb8 31.Ng6 Kh7 32.Nf8 Rf8 33.Bf8 Qc8+–) 31.Bf5 g6 (31...Kh8 32.Ng6 Kh7 33.Nf8 Kh8 34.Bh7 Rb1 35.Bb1 Qc6 36.Ng6 Kh7 37.Nh4 g6 38.Qc6 Nh3 39.gh3 Kh8 40.Qg6 h5 41.Qh7) 32.Bg6 Kg7 33.Nh5 Kg6 34.Qg8 Kh5 35.Qe8 Kh4 36.g3 Kh3 37.Qh5 1–0. DEFFM – GuestRXCH, freechess.org, 2019.

3.Bb2 Nc6 4.b5 ab5 5.ab5 Ra1 6.Ba1 Nd4 7.e3 Nf5 8.Be5 Nf6 9.Nf3 (9.Bd3 d5+–) 9...Bc5 10.d4 Bb6 (10...Be7 11.Bd3 d6 12.Bf6 Bf6 13.Nc3+–) 11.Bc4 (11.Nc3 Ba5 12.Qa1 b6 13.Bf6 Qf6+=) 11...d6 12.Bf6 Qf6 13.0-0 (13.Nc3 c6+–) 13...0-0 14.Nc3 Be6 (better 14...c6!?+–) 15.Nd5+– Qg6 (15...Bd5 16.Bd5 Rb8 17.Be4+–) 16.Nb6 (better 16.e4!? Bd5 17.Bd5 Ne7 18.Bb7 Rb8+–) 16...Bc4?? (better 16...cb6 17.Bd3 Qh5+–) 17.Nc4+– 1–0. DEFFM – GuestLPNR, freechess.org, 2020.

3.Bb2 d6 4.b5 a5 5.e3 b6 6.Nf3 Nf6 7.c4 Be7 8.Be2 Bb7 9.0-0 0-0 10.d4 ed4 11.ed4 Nbd7 12.Qc2 d5 (12...Re8 13.Nc3+=) 13.Nbd2 (13.Nc3 Bb4+=) 13...dc4 (13...Bb4 14.Ne5=) 14.Bc4 h6 (14...Bb4 15.Rfd1+=) 15.Qf5 (15.Ne5 Bb4+=) 15...Bc8 (15...Bb4 16.Rad1+=) 16.Rfe1 (16.Rae1 Bb4+=) 16...Nc5+= 17.Qc2 Ne6 18.Ne5 Bb7?? (better 18...Bb4+–) 19.Nf7!+– Rf7 (19...Rf7 20.Re6 Discovered attack (20.Be6 Remove defender); 19...Kf7 20.Be6 Mate attack) 20.Be6 (20.Re6?! Bd5+–) 20...Qf8 (20...Bd5 21.Bf7 Bf7+–) 21.Qc7 Rb8 (21...Bd5 22.Bf7 Kf7+–) 22.Bf7 Kf7 23.Re7! Qe7 24.Qb8 (24.Qb8 Kg6 25.Nc4+–) 1–0. DEFFM – GuestCKKF, freechess.org, 2019.

3.Bb2 f6 4.b5 (--> 1.b4 e5 2.Bb2 f6 3.b5 a6 4.a4).

3.Bb2 Qf6 4.Nf3= Bb4 5.Be5+/– Qg6 6.Bc7 Nc6 7.c3 Bd6 8.Bb6 Ne5 9.e3 Ne7 (9...Bb8 10.Bd4 (10.Ne5 Be5) 10...Nf3 11.Qf3+/–) 10.Ne5 (10.a5 0-0+= 0.50 (10...Nd5 11.Bd4 Nc6+/–); 10.d4 Nf3) 10...Be5 11.d4 (11.a5 d5+/–) 11...Qb6 12.de5 Qb2 13.Ra3 Qb6 (13...Ng6 14.f4 Nh4 15.Be2+/–) 14.Qb3 (14.Rb3 Qa5+/–) 14...Qb3 (14...Qc5!?+=) 15.Rb3+/– 0-0 (15...Nc6 16.f4+/–) 16.Bd3 (16.Nd2 Nc6 17.f4 Rd8+–) 16...Rb8 (16...Nc6!?+/–) 17.c4+– Nc6 18.f4 (18.c5 Re8 19.f4 h6+–) 18...Na5 (18...b6 19.Nc3 Na5 20.Rb4+–) 19.Rb6 Re8 (19...f6 20.ef6 Rf6 21.Rf6 gf6 22.Nc3+–) 20.Nc3 f6 21.ef6 Re3 22.Kd2 Re6 23.Re6 de6 24.fg7 Nb3 25.Kc2 Nc5 26.h4 Bd7 27.h5 Kg7 28.a5 Kh6 29.g4+– Bc6 30.g5 Kg7 31.Re1 Bf3 32.h6+– Kg8 33.Ne4 Ne4 34.Be4+– Be4 35.Re4 Re8 36.Kc3 Kf7 37.Kd4 Kg6? 38.Re5 Rd8 39.Kc5 Kf7 40.Kb6 Rd7 41.c5 Rd5 42.Kb7 Ke7 43.Ka6 Kd7 44.Kb6 Rd4 45.c6 Kc8 46.Re6 Rd8 47.a6 Rf8 48.a7 (48.a7 Rf4 49.a8Q) 1–0. katchum (1690) – gstevenson, net–chess.com, 2001.

3.c3 Nc6 4.Nf3 (4.Ba3 Nf6+= (4...d5 5.b5 Nce7 6.e3 ab5 7.ab5 Bf5 8.d3 Nf6 9.Nd2 Ng6 10.Bf8 Ra1 11.Qa1+= –0.34) 5.b5 Ne7 6.ba6 b6 7.d4 e4 8.Nd2 Ba6 9.Qc2 e3 10.fe3 Ned5 11.e4+= –0.69; 4.e4 A) 4...Nf6 5.d3 (5.Nf3 d5 6.ed5 Qd5 7.d3 Bf5 8.Bg5 Be7 9.Na3 h6 10.Be3 Ng4 11.Nc4+= –0.53) 5...d5 6.ed5 Nd5 7.Nf3 Bd6 8.Be2 0-0 9.0-0 Re8 10.Re1 Be7 11.Qc2= –0.22; B) 4...d5 5.ed5 Qd5 6.d3 Nf6 7.Qf3 Be6 8.Nd2 Qd7 9.Rb1 Bd6 10.Ne4 Ne4 11.de4+= –0.50) 4...d5 (4...e4 5.Ng1 d5 6.d3 Nf6 7.Bg5 h6 8.Bf6 Qf6 9.d4 Bd6 10.e3 Be6 11.a5–/+ –0.91) 5.e3 (5.d4 e4 6.Ne5 Nb4 7.Ba3 f6 8.e3 Nc2 9.Qc2 fe5 10.de5 Ba3 11.Ra3= –0.19; 5.d3 Nf6 6.Ba3 Bd6 7.b5 ab5 8.ab5 Ne7 9.e3 0-0 10.Be2 Bd7 11.Qb3+= –0.59) 5...e4 6.Nd4 Ne5 7.f3 (7.f4 ef3 8.Nf3 Nf3 9.Qf3 Nf6–/+ 10.Bd3 Bg4 11.Qf2+= –0.62; 7.Qb3 Qg5 8.Rg1 Nf6 9.Ba3 Qh4 10.h3 Qg5 11.b5–/+ –0.87) 7...Nd3 (7...ef3 8.Nf3 Nf3 9.Qf3–/+ Nf6 10.Bd3 a5 11.b5+= –0.50) 8.Bd3+= ed3 9.Qb3 (9.0-0 Bd6+= 10.Ba3 Qg5 11.b5= –0.03) 9...Nf6 (9...Qh4 10.g3 Qh5 11.Bb2–/+) 10.c4 (10.Ba3 Bd7+= (10...Be6 11.b5+= –0.28) 11.0-0+= –0.31) 10...Be6 (10...dc4 11.Qc4 Qd5 12.Qd3 Bb4 13.Nc3+=) 11.Ne6 (11.c5 a5=) 11...fe6 12.Qd3 Bb4 13.cd5 (13.Ba3 Qe7+=) 13...Qd5 14.Qe2 Qe5 15.Ra2 a5 16.Bb2 Qd5 17.Ra1 Qb3 18.Bf6 gf6 19.0-0 Qb2–/+ 20.Nc3? Bc3–+ 21.dc3 Qe2 22.Rae1 Qc4 23.e4 Qc5 24.Kh1 Qc3 25.Rc1 Qa3 26.Rc7 Qa4 27.Rb7 Qc4 28.Rfb1 1–0. piotrus – Thunderbird89, internet, 2010.

3.c3 d6 4.Na3 Be6 5.e4 Nf6 6.Qc2 Be7 7.d4? (7.Nf3 Bg4+=) 7...0-0 (better is 7...ed4 8.cd4 d5–/+) 8.d5= Bg4 9.Bg5 (9.Be2 c6=) 9...Bh5 (better is 9...Nd5!? 10.ed5 Bg5–/+) 10.Bd3 Qd7 11.f3 c6 12.g4 Bg6 13.h4 h6 14.h5 Bh7 15.Bh4 cd5 16.b5? a5?? 17.Kf2? de4–+ 18.Be4? Ne4 19.fe4 Qg4 20.Be7 Re8 21.Rh4 Qd7 22.Bf6–/+ gf6 23.Ke3? Kh8 24.c4 Qe6 25.Qe2 Qd7 26.Rd1?? b6 27.Nb1 Rd8 28.Nc3–/+ Qc7 29.Rd5 Rg8 30.Kd3? Nd7 31.Qf2 Nc5 32.Rc5 dc5 33.Qf6 Rg7 34.Rg4?? Be4 35.Re4 Rd8?? 36.Ke3 Kg8 37.Nge2 Qd7 38.Nd5+/– Qh3 39.Qf3?? Qe6= 40.Ng3 f6 41.Nf5 Rg5 42.Nh6 Attacks the pawn on f6 42...Kh7? 43.Ng4+– f5? 44.Re5 Qc8 45.Re7 Kh8 46.Ngf6 Re8 47.Re8 Qe8 48.Ne8 f4 49.Kf4 Rg8 50.Qc3 Kh7 51.Ndf6 Kh8 52.Ng8 Kg8 53.Qg7 1–0. xorb – stefanW, ChessWorld.net, 2011.

3.d4 Bb4 4.c3 Bd6 5.Nf3 ed4 6.cd4 Nc6 7.e4 Bb4 8.Bd2 Bd2 9.Qd2 d6 10.d5 Ne5 11.Nc3 (11.Ne5 de5 12.Qc3 f6+=) 11...Nf3–/+ 12.gf3 Bd7 13.Rb1 Qc8 14.Rg1 g6 15.Rg5 Ne7 16.h4 h6 17.Rg2 Bh3 18.Rg3 Bf1 19.Kf1 c6 20.dc6 Qc6 21.Rc1 Rc8 22.f4 Qc4 23.Rd3 Nc6?? (better is 23...f5 24.ef5 0-0 (24...Nf5? 25.Na2+–) 25.fg6 Ng6–/+ (25...Rf4? 26.Ne2 Rf2 27.Kf2 Qh4 28.Rg3 Qh2 29.Ke1 Qh1 30.Ng1 Qe4 31.Kf2 Rf8 32.Nf3+–)) 24.Nd5+– Qa4 25.Nf6 Kf8 26.Rd6 Kg7 27.e5 Rhd8?? 28.h5?? Rd6–+ 29.Qd6 Qf4 30.Rd1?? Rd8 31.Nd7 Ne5! 32.Qe7 Rd7 33.Rd7 Nd7 34.Qd7 Qc4 35.Kg2 Qc6 36.Qc6 bc6 37.hg6 fg6 38.Kf3 Kf6 39.Ke3 Ke5 40.Ke2 g5 41.f3 Kd4 42.Kf2 Kd3 43.Kg3 c5 44.Kf2 Kd2 45.Kg3 h5 46.Kh3 c4 47.Kg2 c3 48.Kf2 c2 49.Kg2 c1Q 50.Kf2 Qe1 51.Kg2 h4 52.Kh3 Qg3 0–1. dunk0104 – Mr.Oldenslo, ChessWorld.net, 2011.

2.a4 e6

3.Ba3 g6 4.c4 Bg7 5.d4 e5 6.d5 (6.de5 Be5 7.Ra2 Bg7=) 6...Nf6 (6...e4 7.Ra2=+) 7.f3 (7.d6 b6=) 7...0-0 (7...Nh5 8.g3=+) 8.e4= d6 9.g4 (9.Nc3 Nbd7=) 9...c6 (9...Nfd7 10.h4=+) 10.Nc3= a5 11.b5 cb5 (11...cb5 12.Nb5 Ne8=) 0–1. afsharian (1615) – marcosborges (1635), lichess.org, 2017.

3.Bb2 b6 4.e3 Bb7 5.b5 a5 6.Nf3 c6 7.c4 (7.Be2 Nf6=) 7...c5 (7...Nf6 8.Be2=) 8.Be2+= h6 (8...Nf6 9.0-0+=) 9.0-0+– Ne7 (9...d5 10.d4+–) 10.d4 cd4 11.Qd4 Nf5 12.Qd3 d6 13.e4 Nh4 14.Nbd2 (14.Bd4 Nd7+=) 14...Nd7+= 15.Nh4 (15.Qe3 Nf3 16.Nf3 Qc7+=) 15...Qh4 16.g3 (16.f4 Nc5 17.Qe3 Rc8+=) 16...Qd8 (16...Qh3 17.Nb3+=) 17.Qe3 (17.Nb3 Qc7+=) 17...Nc5 18.f4 White plans e5 18...Qc7 19.e5 (19.Bd4 e5 20.Bc3 Be7=) 19...d5 (19...Rg8 20.Bd4=) 20.cd5 (20.Bd4 Rc8+=) 20...Bd5 21.Rac1 (21.Nc4 Rd8 22.Nd6 Bd6 23.ed6 Qd6 24.Bg7 Rg8 25.Bh6 Qe7+–) 21...Be7 (21...Qd7 22.Nc4 Na4 23.Nb6 Nb6 24.Qb6=) 22.Bd4 (22.Ne4 0-0+=) 22...0-0 (22...Qd7 23.Nc4 Na4 24.Nb6 Nb6 25.Bb6=) 23.Nc4 (23.Ne4 Rac8 24.Bc5 bc5=) 23...Rac8= (23...Na4?? A) 24.Bb6?! Qd7= (worse 24...Nb6 25.Nb6 Qa7 26.Kf2+–); B) 24.Nb6 Qd8 25.Na4+–) 0–1. DEFFM – GuestCVDZ, freechess.org, 2018.

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

3.Bb2 Nf6 4.b5 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 b6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.c4 ab5 5.cb5 c6 6.a4 cb5 7.ab5 Ra1 8.Ba1 b6).

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

3.c3 Nf6 4.Qb3 Nc6 (4...d5 5.d4=+) 5.Ba3 (5.d4 d5=+) 5...d6 (5...e5 6.e3=+) 6.e3 e5 7.d4 Be6 8.Bc4 (8.Qc2 ed4 9.cd4 d5=+) 8...d5 9.Be2 ed4 (9...Nd7 10.b5 Na5 11.Qd1=+) 10.ed4 Bd6 11.Nf3 0-0 12.0-0 Ne7 13.b5 Ba3 14.Ra3 a5 (14...Ng6 15.Re1=) 15.c4 (15.Re1 Qd6=) 15...dc4 16.Bc4 b6?? (16...Bc4 17.Qc4 Ned5 18.Re1=) 17.Nc3 (better 17.Be6 fe6 18.Ng5+–) 17...Bc4= 18.Qc4 Ng6 (18...Qd6 19.Ra2=) 19.Ne5 (19.Re1 Qd6 20.Ra2 Rfe8+=) 19...Qd6 (19...Ne5 20.de5 Qe7=) 20.Rb3 (20.Ng6!? Ng4 21.g3=) 20...Ne5=+ 21.de5 Qe5 22.Ne2 (22.Rb2 Ng4 23.Qg4 Qc3=+) 22...Rac8 23.Re3 Qb2 (23...Qd5 24.Qd5 Nd5 25.Rd3–/+) 24.g3 (24.Nd4 Rce8=+) 24...Rfd8 25.Kg2 (25.Nc3 Qb4 26.Qc6 Qd6=+) 25...h6 (25...Rd2 26.Nc3 Qc2 27.Qc6=+) 26.Re1 (better 26.Nc3=+) 26...Nd7 (26...Qb4 27.Rc1–/+) 27.Qe4 (better 27.Nd4!? Nf6 28.Nc6+=) 27...Qf6 (27...Nc5 28.Qf3 Na4 29.Re7–+) 28.Nf4 (28.Rf3 Nc5 29.Rf6 Ne4–/+) 28...Nc5 29.Qe8?? (better 29.Qc4 Rd4 30.Qc2–/+) 29...Re8–+ 30.Re8 Re8 31.Re8 Kh7 32.Nd5 (32.Rc8 Qe7–+) 32...Qg6 (32...Qd4 33.Nf4–+) 33.Nc7 (33.Nf4 Qd6 34.Re3 Na4–+) 33...Nd3 (33...Qd6 34.Na8–+) 34.Nd5 (34.h4 Qd6 35.Re3 Ne5–+) 34...Nb2 (better 34...Qf5!? 35.Nf4 Nf4 36.gf4 Qf4 37.f3–+) 35.Nf4 (35.Re5 Na4 36.h4 Qd6–+) 35...Qc2 (35...Qf5 36.Rd8–+) 36.Re3 (36.Re2 Qb3 37.Re5 Qa4–+) 36...Qa4 (36...Nd1 37.Re2 Qa4 38.Nd5–+) 37.h4 (37.Re7 Nd1–+) 37...Qb5 38.Nd3 (38.Re7 a4 39.Re3 Qc6 40.Kg1 b5–+) 38...Qc6 (38...Nd3 39.g4–+) 39.f3 (39.Kh2 Qc2 40.Nf4 Qf2 41.Ng2 a4–+) 39...Nc4 (better 39...Qc2 40.Nf2 Nd1 41.Ra3–+) 40.Re4 (40.Re2 b5–+) 40…Qa4 0–1. afsharian – nflguru (1655), lichess.org, 2018.

3.c3 Nf6 4.d4 b6 5.Bg5 h6 6.Bf6 Qf6 7.e4 Bb7 8.Nd2 d6 9.Ngf3 Nd7 10.Bd3 e5 11.b5 a5 12.0-0 Be7 13.Bc4 c5 14.bc6+= Bc6 15.Qb3 0-0 16.Bb5 Bb5 17.Qb5 Rfd8 18.Nc4 Rab8 19.Rfe1 ed4 20.cd4 Nf8? 21.Nb6+– d5 22.Nd5 Qd6 23.Qa5 Ne6 24.Red1 f5 25.Ne7 Qe7 26.Qf5 Qd7 27.Ne5 (27...Qe8 28.d5+–) 1–0. Trkn – mikeviking, internet, 2005.

2.a4 h6

3.Bb2 b6 4.e3 Bb7 5.b5 a5 (5...ab5 6.ab5 Ra1 7.Ba1=) 6.Nf3+= Nf6 7.Be2 e6 8.0-0 Be7 9.c4 d6 10.d4 0-0 11.Nc3 d5 (11...c5 12.d5+=) 12.cd5 Nd5 13.Nd5 Bd5 14.Qc2 Nd7 15.e4 Bb7 16.Bd3 Re8 17.Qe2 Bb4 18.Rac1 Rc8 19.Rc2 Nf8 (19...f5 20.ef5 ef5 21.Ne5 Ne5 22.de5+–) 20.Ne5+– f6 (better 20...Ng6!? 21.Ng6 fg6+–) 21.Nc6+– Bc6 22.Rc6 Kh8 (22...Qe7 23.f4+–) 23.Rd1 (23.f4 Qe7+–) 23...Ng6 (23...Qe7 24.g3+–) 24.Qg4 Nf8 25.Bc4 (25.e5 fe5 26.h4 Qe7+–) 25...Bd6 (25...Qe7 26.f4+–) 26.e5 f5 27.Qh5 Qg5 (27...Bb4+–) 28.Qg5 hg5 29.ed6 cd6 30.d5 e5 31.Bb3 Rc6 (31...Nd7+–) 32.dc6 Ne6 (32...Kh7+–) 33.Be6 Re6 34.c7 (34.c7 Kg8 35.c8Q Kf7 36.Qd7 Re7 37.Qf5 Kg8 38.Qc8 Kh7 39.Rd6 g6 40.Be5 Re5 41.Rd7 Re7 42.Re7 Kh6 43.Qh3) 1–0. DEFFM – GuestTQYQ, freechess.org, 2019.

3.Bb2 c6 4.e3 d5 5.Nf3 e6 6.b5 (6.Nc3 Bb4 7.Na2 Bf8=+) 6...c5 (6...ab5!? 7.ab5 Ra1 8.Ba1 Nf6=) 7.c4 Nf6 8.Be2 (8.Nc3 ab5 9.Nb5 Be7=) 8...Ne4 (8...ab5!? 9.ab5 Ra1 10.Ba1 Nbd7=) 9.0-0 (better 9.Nc3+–) 9...g5?? (better 9...ab5 10.ab5 Ra1 11.Ba1 Nd7+–) 10.Bh8+– g4 11.Ne5 Bd7 (11...Bd6 12.d4 cd4 13.ed4 ab5 14.cd5+–) 12.Bg4 Qe7 (12...Bd6 13.Nc3 Ke7 14.Nd7 Nd7 15.cd5 Nc3 16.Bc3 ed5 17.Qf3+–) 13.Bh5 ab5 (13...Kd8 14.cd5 ed5 15.Nc3+–) 14.Bf7 Kd8 15.Bg8 (15.cd5 Ng5 16.de6 Be6 17.Be6 Qe6+–) 15...Nc6 (15...bc4 16.Qf3 Be8 17.Be6 Bg7 18.Bg7 Qg7 19.Nf7 Bf7 20.Qf7 Qf7 21.Bf7 d4 22.Bc4 Nd7+–) 16.ab5 Ra1 (16...Na5 17.Nd7 Kd7 18.cd5+–) 17.bc6 bc6 (17...Be8 18.Qb3 b5 19.cd5+–) 18.Nf7 Kc7 19.Ba1 (19.Ba1 d4 20.Qa4+–) 1–0. DEFFM – GuestHBQP, freechess.org, 2019.

3.Bb2 d5 (--> 1.b4 d5 2.Bb2 a6 3.a4 h6).

3.Bb2 d6 4.e3 (4.Nc3 d5=) 4...e6 (4...e5 5.Nf3=) 5.Nf3 Nf6 (5...e5 6.Nc3=) 6.d4 (6.Be2 d5 7.b5 Bd6=) 6...Be7 (6...d5 7.c3=) 7.Bd3 0-0 (7...d5 8.Ba3=) 8.0-0 Qe8 (8...d5 9.c3=) 9.c4 Nh7 (9...Nc6 10.Bc3+=) 10.Qc2 (10.Nc3 Nf6+=) 10...f5 (10...Nf6 11.Bc3+=) 11.b5 (11.Rd1 Qg6+=) 11...Qg6 (11...Qh5 12.a5+=) 12.Nbd2 Ng5 13.Ng5 hg5 (13...Qg5 14.Nf3 Qg4 15.a5+=) 14.e4+– f4 (14...g4 15.ef5 ef5 16.Rfe1+–) 15.e5 Qh6 16.b6! c6 (16...cb6 17.Ba3 Combination) 17.Ba3+– c5 18.ed6 Bd6 19.Ne4 Be7 20.Bc5 Bc5 21.Nc5 Nc6 22.d5 ed5 (22...Nd4 23.Qb2 Qf6 24.Rab1+–) 23.cd5 Nd4 (23...Ne5 24.a5 f3+–) 24.Qc4 Qf6 25.d6 Kh8 (25...Be6 26.Ne6 Ne6 27.Rfe1+–) 26.Qd5 (26.d7 Rd8 27.Qd5 Bd7 28.Nd7 Qe6 29.Qe6 Ne6+–) 26...Be6 (26...f3 27.d7 (27.Nb7 Ne2 28.Be2 fe2=+) 27...Ne2 28.Kh1 fg2 29.Qg2+–) 27.Ne6 Ne6 28.Qb7 Nc5 (28...Rad8 29.Qe4 (29.Ba6?! Nc5 30.Qa7 Ra8+–) 29...g6 30.Ba6+–) 29.Qd5 Nd3 30.Qd3 Rad8 (30...g4 31.b7 Rab8 32.Qa6+–) 31.Rad1 (31.Rfd1 g4+–) 31...Rf7 (31...g4 32.h3+–) 32.a5 (32.Rb1 Rb7+–) 32...Rfd7 (32...g4 33.Qa6 f3 34.Qc4+–) 33.Qa6 Rd6 (33...f3 34.Qb5+–) 34.Rd6 Qd6 35.Qb5 g4 (35...f3 36.Qg5 fg2 37.Re1+–) 36.b7 (better 36.Qh5 Kg8 37.Qg4+–) 36...Kg8 (36...g3+–) 37.a6 f3 (37...g3 38.a7 gf2 39.Rf2 Qd1 40.Qf1 Qd6+–) 38.a7 fg2 39.Kg2 Qh6 40.b8Q Qh3 41.Kg1 Rb8 (41...Qh2 42.Kh2 g3 43.fg3 g6 44.Qd7 Rb8 45.ab8Q) 42.ab8Q (42.ab8Q Kh7 43.Qf5 g6 44.Qf7 Kh6 45.Qh8 Kg5 46.Qff6) 1–0. GuestMSQW – GuestCRCM, freechess.org, 2018.

3.Bb2 e5 4.b5 ab5 5.ab5 Ra1 6.Ba1 d6 7.e3 Nf6 8.Nf3 Be7 9.Be2 0-0 10.0-0 c5 11.c4 Bg4 (11...e4 12.Ne1=) 12.d4 cd4 13.ed4 e4 14.Nfd2 Be2 (14...Bf5 15.Nc3=) 15.Qe2+= Qc7 (15...d5 16.cd5 Qd5 17.Nc3 Qd4 18.Nce4+=) 16.Ne4+– Ne4 (16...Nbd7 17.Nf6 Bf6 18.Nd2+–) 17.Qe4 d5 (better 17...Bg5!?+–) 18.Qd5+– (18.cd5?! Bd6 19.g3 Nd7+–) 18...Bd6 19.g3 White intends c5 (better 19.c5 Bh2 20.Kh1+–) 19...Nd7? (better 19...Rd8+–) 20.c5 Be7 21.c6 (21.Re1 Nf6 22.Qf3 Rd8+–) 21...Nb6 (21...bc6 22.Qc6 (worse 22.bc6 Nb8+–) 22...Qa7 23.Nd2+–) 22.Qf3 bc6 23.bc6 Ra8 24.Nc3 Ra3 25.Nd5 (25.Nb5 Rf3 26.Nc7 Rb3+–) 25...Rf3 (25...Nd5 26.Qd5 h5 27.Qc4+–) 26.Nc7 Bd6 (26...Rb3 27.Kg2+–) 27.Nb5 Bb4 (27...Nc8 28.Rb1 Bf8 29.c7+–) 28.Rb1 Nd5 (28...Bf8+–) 29.Rb4! Nb4 (29...Rf6 30.Rc4 Re6+–) 30.c7 1–0. DEFFM – egoy, freechess.org, 2019.

3.Bb2 e6 4.e3 Nf6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 d6 9.d4 d5 10.Bd3 Nbd7 (10...0-0 11.0-0=) 11.0-0 0-0 12.c4 (12.Nbd2 c6+=) 12...b6 (12...dc4 13.Bc4 Nd5 14.Nc3+=) 13.Nbd2 Bb7 14.Bb2 Qa8 (14...dc4 15.Nc4 c6 16.bc6 Bc6 17.Nfe5 Ne5 18.Ne5+=) 15.Qc2+= Bb4 16.Ra1 Qb8 17.Ne5 (17.cd5 Nd5 18.Ba3 Ba3 19.Ra3 Rc8+=) 17...Bd2 18.Nd7 Nd7 19.Qd2 dc4 20.Bc4 Nf6 21.f3 Nd5 (21...Rc8 22.Bd3+–) 22.e4 Nf6 23.Qd3 Rd8 24.Qb3 Re8 25.Bc3 Nd7 26.Be1 (26.Qb2 Nf6+–) 26...c5 27.Bg3 (27.bc6 Bc6 28.Qe3 Qd8+–) 27...Qc8+= 28.d5 ed5 29.ed5 Nf6 (29...Ne5!?+=) 30.d6+– Rf8 31.Qd3 Qd8 (31...Nd7 32.Qg6+–) 32.Bh4+– Qd7?? (better 32...Kh8+–) 33.Bf6 gf6 (33...Kh8 34.Re1 gf6 35.Re7+–) 34.Qg6 Kh8 35.Qh6 (35.Qf6 Kg8 36.Re1 Bd5 37.Bd5 Qd6 38.Qd6 Rd8 39.Bf7 Kg7 40.Qg6 Kf8 41.Qg8) 35...Kg8 36.Qf6 (better 36.Qg6 Kh8 37.Qf6 Kg8 38.Bd3+–) 36...Re8 (36...Qe8 37.Qg5 Kh8+–) 37.Qg6 Kh8 38.Bf7 (38.Bf7 Qf7 39.Qf7 c4 40.Qe8 Kg7 41.d7 Kf6 42.d8Q Kf5 43.g4 Kf4 44.Qf6) 1–0. DEFFM – GuestTYWC, freechess.org, 2018.

3.Nf3 e6 4.Ba3 d5 5.e3 Ne7 6.d4 g5 (6...Nf5 7.Bd3=) 7.Bd3+= Bg7 8.0-0 0-0 9.b5 ab5 10.ab5 Re8?? (Better is 10...Qe8–/+) 11.Be7+– Qe7 12.Ra8 Nd7 13.Be2 b6 (13...e5 14.de5 c6 15.bc6 bc6 16.Ra7+–) 14.Nc3 c5 (14...Qd6 15.Qd2+–) 15.bc6 Nf6 16.Nb5 Ne4 17.c4 dc4 18.Bc4 Nd6 19.Qa4 Nc4 20.Qc4 e5 21.Ne5 Be5 22.de5 Qe5 23.Rd1 Kg7 24.Nd6 Be6 25.Ne8 1–0. b4_player (2135) – NN, GameColony.com, 2002.

2.Bb2 a5

3.b5 c6 4.c4 cb5 5.cb5 b6 6.e3 Bb7 7.a4 (7.Nf3 Nf6+=) 7...d6 8.Nf3 Nh6 (8...e5 9.Be2+=) 9.Nc3 (9.Be2 Nd7+=) 9...e5 10.Bc4 (10.Rc1 Nd7+=) 10...Be7 (10...d5 11.Bb3 e4 12.Nd4+=) 11.Rc1 (11.Bd5 Bd5 12.Nd5 0-0+–) 11...Nd7 (11...d5 12.Bb3 d4 13.Na2+=) 12.Bd5 Rb8 (12...Bd5 13.Nd5 Rc8 14.d4 Rc1 15.Qc1+–) 13.0-0 0-0 14.d4 ed4 (14...Ng4 15.Bc6+–) 15.Nd4+– Nf6 (15...Nc5 16.Nc6 Bc6 17.bc6+–) 16.Nc6 Bc6 17.bc6 Rc8 18.Nb5 Nd5 19.Qd5 Kh8 (19...Ng4 20.c7 Qd7 21.Qc6+–) 20.h3 (20.Bd4 Ra8+–) 20...f6 (20...Qe8 21.c7+– (worse 21.Nd6 Bd6 22.Qd6 Nf5+–)) 21.c7 Qe8 (21...Qd7 22.Qc6 Qf5 23.Na7+–) 22.Bd4 (22.Nd6?! Bd6 23.Qd6 Qa4+–) 22...Qf7 (22...Qd7 23.Bb6 f5 24.Qc6+–) 23.Qb7 (23.Qf7 Nf7 (23...Rf7?? 24.Bb6 Rff8 25.Na7+–) 24.Bb6 Ne5+–) 23...Nf5 (23...Qe6 24.Na7+–) 24.Na7 (worse 24.Qb6 d5+–) 24...Qe6 (24...Qg8 25.Bb6 Rfe8 26.Rfd1+–) 25.Bb6 d5 (25...Nh4 26.Rfd1+–) 26.Nc8 Rc8 27.Rfd1 Bd6 (27...d4 28.e4 Nd6+–) 28.Qd5 Qd7 (28...Qd5 29.Rd5 g6 30.Ba5+–) 29.e4 Ne7 30.Qd6 Qd6 31.Rd6 Kg8 32.Rd7 Kf7 33.Bc5 Re8 34.Re7 Re7 35.Be7 Ke7 36.c8Q Kf7 37.Rc7 Kg6 38.Qg4 Kh6 39.Rg7 f5 40.Qg5 1–0. Barcarola (1610) – qswj9, internet free game, 2018.

3.b5 Nf6 4.e3 d5 5.Nf3 d4 (5...e6!?=) 6.Nd4 e6 7.Bc4 g6 8.0-0 h6 9.Nc3 Bg7 10.Ba3 Kd7 11.d3 Ra7 12.Qf3 b6 (12...Ra8+–) 13.Nc6 Bb7 14.Nd8 Bf3 15.Nf7 h5 16.Nh8 Ra6 17.ba6 Na6 18.gf3 c6 19.Ng6 Kc7 20.Ba6 c5 21.Nf4 e5 22.Ne6 Kb8 23.Ng7 Ka7 24.Bb5 Ne4 25.Ne4 h4 26.Bb2 h3 27.Be5 a4 28.Ba4 c4 1–0. Bonetti,Shane – Puntenet,David tramuntana (1890), ICC, 2002.

2.Bb2 Ra7

3.a4 b6 4.e3 (4.Nc3 Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nb4=) 4...Bb7 (4...Nc6 5.b5 ab5 6.ab5 Ra1 7.Ba1=) 5.Nf3 h5 (5...Nf6 6.Nc3 Nc6 7.b5 ab5 8.Nb5=) 6.Be2 (6.Nc3 Nc6 7.b5 ab5 8.Nb5 Ra8+=) 6...d5 (6...e6!?+=) 7.0-0 Nd7 8.c4 (8.a5 Ngf6+–) 8...dc4 (8...Ngf6 9.Na3+–) 9.Bc4 (9.Na3 Ngf6+–) 9...e6+= 10.b5 (10.Na3 Ngf6 11.b5 Ba3 12.Ra3 ab5 13.ab5 Ra3 14.Ba3 h4+–) 10...a5 (10...ab5 11.Bb5 Ngf6 12.Na3+=) 11.Nd4 e5?? (better 11...Ne5 12.Be2 Qh4+=) 12.Nc6+– Qg5 13.f4 ef4 14.Rf4 Ngf6 (14...Ndf6 15.Qb3 Bc6 16.bc6+–) 15.Qf1 Rh6 (15...Bd6 16.Na7 Bf4 17.ef4 Qc5 18.d4 Qe7+–) 16.Re4 Ne4 17.Bf7 (17.Qf7) 1–0. DEFFM – TiagoBastos, freechess.org, 2020.

3.a4 Nf6 4.Na3=.

3.e3 c6 4.Nf3+= b5 (4...d6 5.d4+=) 5.Be2 (5.a4 ba4 6.Ra4 d6+=) 5...d5 (5...a5 6.a4 ab4 7.ab5 Ra1 8.Ba1+=) 6.0-0 (6.a4 Rb7+–) 6...Rd7 (6...f6 7.a4+=) 7.d3 (better 7.Be5 Bb7 8.Nd4+–) 7...Rd6? (7...f6+=) 8.c4?? (8.Be5!? Nf6+–) 8...Rh6 (8...dc4!? 9.d4 Bf5=) 9.g3 (9.Be5!? Nd7 10.Bf4+–) 9...Bh3 10.Re1 Qd7 (10...Nd7 11.cb5 cb5 12.a4+–) 11.Nc3 (11.Be5 Qb7+–) 11...e6+= 12.cb5 ab5 13.a4 Bd6? (better 13...Nf6!?+=) 14.ab5 Nf6 15.bc6 Nc6 16.b5 Nd8 17.b6 (17.e4 d4 18.Nd4 Bg3 19.hg3 Qd4+–) 17...Ng4 (better 17...0-0+–) 18.Ra7 Qc6 19.d4 (better 19.Nd4 Qb6 20.Qa4 Kf8 21.Ba3 Ba3 22.Qa3 Kg8 23.Rb1 Qa7 24.Qa7+–) 19...0-0 20.Qb3 f5 21.Ng5 f4?? (better 21...Qe8+–) 22.ef4 (better 22.Nh3 fg3 23.Bg4 gf2 24.Nf2 Bh2 25.Kf1 Bg3+–) 22...Bf4 (22...Nf6 23.Nh3 Rh3 24.f5+–) 23.Bg4 (better 23.gf4 Qd6 24.Bc1 Nf6+–) 23...Bg5 24.Bh3 Rh3 (24...Bd2 25.Re5 Rh3 26.b7 Nb7 27.Qb7 Qb7 28.Rb7 Bc3 29.Bc3+–) 25.b7 Nb7 26.Rb7 (26.Qb7 Qb7 27.Rb7 Rh6+–) 26...Bd2 (26...Rh6 27.f4 Bf6 28.Na4+–) 27.Rd1 (27.Rb6!? Qd7 28.Ree6 Qf7+–) 27...Bc3 28.Bc3 e5 (28...Rh5+–) 29.Rb6 (better 29.de5!? Rh6+–) 29...Qc7 30.Qd5 Kh8 31.Rc6 Qa7 32.Rf1 (32.Bb4 Rg8 33.de5 Qa8+–) 32...Qe7 (32...Rh5 33.de5 Rhf5 34.Qd4+–) 33.de5 Qg5 (33...Rh5 34.Qd6 Qe8 35.e6+–) 34.Bd2 (better 34.Qd7 Rg3 35.hg3+–) 34...Qg6 (34...Qh5+–) 35.Rg6 hg6 36.Qe6 (better 36.e6 g5+–) 36...Rh5 37.Qg6 Rhf5 38.e6 (38.Bb4 R8f6 39.ef6 Rf6 40.Qh5 Kg8 41.Re1 Rh6 42.Qf5 Re6 43.Re6 g5 44.Qg5 Kf7 45.Qg6) 38...R5f6 39.Qg4 Re8 40.Bc3 (40.Qh5 Kg8 41.Qe8 Kh7 42.Qh5 Rh6 43.Qf5 g6 44.Qf7 Kh8 45.Bc3) 40...Kg8 41.Bf6 Re6 (41...Re7 42.Rd1 Rd7 43.Rd7 g6 44.Qg6 Kf8 45.e7) 42.Qg7 1–0. e4_e5_f4 (1745) – nekpol (1725), lichess.org, 2020.

3.e3 Nc6 4.Nf3 (4.b5!? ab5 5.Bb5=) 4...Nb4=+ 5.a3 Nd5 6.c4 a5?? (better 6...Ndf6=+) 7.cd5+– a4 (7...e6 8.Nc3 Nf6 9.de6 de6 10.Nb5+–) 8.Bc4 h5 (8...e6 9.Bd4 Ra5 10.de6 de6 11.0-0+–) 9.0-0 Rh6 (9...e6 10.Bd4 Ra5 11.Nc3+–) 10.Bd4 Rd6 (10...Ra5+–) 11.Ba7 Rc6 (11...b6+–) 12.dc6 dc6 13.Ne5 h4 14.Bf7 1–0. GuestWHFK – GuestRPXL, freechess.org, 2018.

3.Nf3 b5 4.e3 f6 5.Nh4 g6 6.a4 c6 7.ab5 cb5 8.Bb5 Qb6 9.Bd4 Qb5 10.Ba7 Nc6 11.Bd4 Nd4 12.ed4 Qb4 13.Nf3 d5 14.c3 Qb8 15.0-0 Bh6 16.Re1 g5 17.Qa4 Kf8 18.h3 Bg7 19.Qc6 Bb7 (19...Qb7 20.Qc5+–) 20.Qe6 (20.Qb6 Qa8+–) 20...h5 21.Na3 Rh6? (21...Qc8 22.Qb6 Kf7+–) 22.Rab1 f5 (22...Qa8 23.Qd7 Qc8 24.Rb7 Qd7 25.Rd7 g4+–) 23.Qd7 (23…Qc8 24.Rb7 Qd7 25.Rd7+–) 1–0. Wall,Bill – RawTale, Microsoft Gaming Zone, 2004.

2.Bb2 b5

(--> 1.b4 b5 2.Bb2 a6).

3.e3 Bb7 (--> 1.b4 b5 2.Bb2 Bb7 3.e3 a6).

3.e3 Bb7 4.Nf3 e6 5.a3 Nf6 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6).

3.e3 Bb7 4.Nf3 e6 5.Be2 Nf6 6.a3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.Be2).

3.e3 d5 (--> 1.b4 d5 2.Bb2 a6 3.e3 b5).

3.e3 Nf6 (--> 1.b4 Nf6 2.Bb2 b5 3.e3 a6).

3.Nf3 Bb7 4.e3 (--> 1.b4 b5 2.Bb2 Bb7 3.e3 a6 4.Nf3).

3.g3 Bb7 4.Nf3 (--> 1.b4 b5 2.Bb2 a6 3.Nf3 Bb7 4.g3).

2.Bb2 b6

3.a4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.a4 a6).

3.a4 c5 4.b5 (4.bc5!? bc5 5.e4+=) 4...ab5= 5.ab5 Ra1 6.Ba1 Bb7 (6...d5 7.g3=) 7.e3 (7.Nf3 d5=) 7...Nf6 (7...d5 8.f4=) 8.Nf3 Nd5 (8...d5 9.c4=) 9.Bc4 (9.e4 Nf6 10.e5 Nh5+=) 9...Nc7 (9...e6 10.0-0 Nf6 11.Bf6 gf6 12.Nc3=) 10.0-0 e6 11.Be2 d5 12.c4 dc4 (12...Nd7 13.Qc2+=) 13.Bc4 (13.Na3 Nd7+=) 13...Bd5 (13...Nd7 14.Bb2+=) 14.Bd5+– Qd5 (14...ed5 15.Be5+–) 15.Be5 Bd6? (better 15...Qb7+–) 16.Nc3+– Qb7 (16...Qd3 17.Ne1 Qf1 18.Kf1 Be5+–) 17.Bd6 Nb5 (17...f6+–) 18.Nb5 Nd7 (18...Nc6 19.Ng5 Nd8 20.Qg4+–) 19.Nc7 Kd8 20.Ng5 Kc8 21.Nf7 (21.Qa4 Rg8 22.Nb5 Nb8 23.Bb8 Rd8 24.Nf7 Qf7 25.Nd6 Rd6 26.Bd6 Kd8 27.Qa8 Kd7 28.Be5 Ke7 29.Qb7 Ke8 30.Qc8 Ke7 31.Ra1 Qf2 32.Kf2 Kf7 33.Ra7 Kg6 34.Qe6 Kg5 35.Rg7 Kh5 36.Qh3) 21...Re8 22.Ne8 1–0. DEFFM – TheMirage, freechess.org, 2019.

3.a4 c6 4.c4 d6 5.b5 ab5 (5...Nf6 6.e3=) 6.cb5 c5 7.e3 d5 8.Nf3 e6 9.Be2 Nf6 10.0-0 Be7 11.d4 c4 12.Nc3 Bb7 13.Ne5 Nbd7 14.Bf3 (14.f4!?=) 14...Ne5=+ 15.de5 Nd7 16.Ne2 (16.e4 Ne5 17.ed5 Nf3 18.Qf3 0-0=) 16...0-0 17.Nf4 Qc7 18.Rc1 (18.Qd4!?–/+) 18...Ne5–+ 19.Be2 Bf6 (19...Rfc8–+) 20.Nh5 (better 20.Qc2–/+) 20...Be7?? (better 20...Nf3! 21.Bf3 Bb2–+) 21.f4 (21.Nf4 Rfc8–+) 21...Nd7 22.Bg7 Rfe8 (22...Rfc8 23.Rf3 f5 24.Rg3=) 23.Qe1 f5?? (better 23...f6+=) 24.Qg3+– Kf7 25.Bd4 (better 25.Be5 Rg8 26.Bc7 Rg3 27.Ng3+–) 25...Rg8=+ 26.Qh3 Rg6 (better 26...Ra4!? 27.Ng3 Nf6=+) 27.Ng3+= Rag8? (better 27...Nf6!?+=) 28.Qh7 (better 28.Bh5+–) 28...R8g7?? (better 28...Kf8+–) 29.Bg7+– Rg7 30.Bh5 Kf8 31.Qh8 Rg8 32.Qh6 Rg7 33.Rfd1 (33.Qe6 Nc5 34.Qf5 Kg8+–) 33...Bc5 (33...Nf6 34.Ne2+–) 34.Kf2 (better 34.Qe6 Re7 35.Qh6 Kg8 36.Nf5 Nf8 37.Ne7 Qe7+–) 34...Qd6 35.Ne2 (better 35.Rc4 Kg8 36.Bf3+–) 35...d4?? (35...Qe7 36.Bf3 Qf6 37.Qf6 Nf6+–) 36.Nd4 e5 (36...Bd4 37.Rd4 Bd5 38.Rcc4 Kg8 39.Rc8 Nf8 40.Rd5 Qd5 41.Rf8 Kf8 42.Qh8 Ke7 43.Qg7 Kd8+–) 37.Qd6 (better 37.Ne6 Qe6 38.Qe6 Re7 39.Qf5 Kg8 40.Rd7 Rd7 41.Qd7 Be4+–) 37...Bd6 38.Ne6 Ke7 39.Ng7 Bc5 40.Nf5 Kf6 41.Rd7 Kf5 42.Rb7 (42.Rf7!? Ke6 43.f5 Kd6 44.Rb7 e4+–) 42...ef4 43.Rc4 fe3 44.Ke2 Ke5 45.Rc5! bc5 46.Rc7 (46.b6 Ke6 47.Rf7 c4 48.b7 c3 49.b8Q c2 50.Qb6 Ke5 51.Re7 Kf5 52.Qc5 Kf4 53.g3) 46...Kd4 47.Rc5! Kc5 48.Ke3 Kb6 49.Ke4 Ka5 50.Kd5 Kb6 51.Kc4 Ka5 52.Kc5 (52.g4 Kb6 53.g5 Ka7 54.a5 Kb7 55.g6 Kb8 56.g7 Kc8 57.g8Q Kd7 58.Bg4 Ke7 59.Qg7 Ke8 60.a6 Kd8 61.Qd7) 52...Ka4 53.b6 Ka3 (53...Kb3 54.b7 Kb2 55.b8Q Kc2 56.Kc4 Kd2 57.Qb2 Ke3 58.Qd4) 54.b7 Ka2 (54...Kb3 55.b8Q Kc2 56.Kc4 Kc1 57.Kb3 Kd2 58.Qg3 Kc1 59.Qe1) 55.b8Q Ka1 56.Qb4 (56.Kd4 Ka2 57.Kc3 Ka3 58.Qb3) 56...Ka2 57.Bf7 Ka1 58.Qc3 (58.Qa3 Kb1 59.Bg6) 58...Kb1 59.Bg6 (59.Bg6 Ka2 60.Qb4 Ka1 61.Qa3; 59.Qd2 Ka1 60.Qc1) 1–0. BeepBeepImAJeep (2590) – Jessejames88 (2335), lichess.org, 2018.

3.a4 c6 4.c4 d6 5.e3 e6 6.d4 f5 (6...Nf6 7.Nf3=) 7.Nc3 (7.Nf3 Be7+=) 7...g6 (7...Nf6 8.Nf3+=) 8.Nf3 h6 (8...Nf6 9.a5+=) 9.Bd3 Bd7 (9...Bg7 10.a5+–) 10.0-0 Ra7 (10...Nf6 11.e4+–) 11.e4 Qc7 (11...Bg7 12.Qe2 Ne7 13.e5+–) 12.ef5 Kd8? (better 12...gf5 13.d5 e5+–) 13.fg6 (better 13.fe6 Be6 14.d5 Bg4+–) 13...Qc8 (13...Nf6 14.Qe2+–) 14.c5! Be7 (14...bc5 15.dc5 Combination; 14...dc5 15.dc5) 15.g7 Nf6 (15...Bf6 16.cb6 Rb7+–) 16.gh8Q Kc7 17.cd6 Kb7 18.Qg7 (better 18.Qc8 Kc8 19.de7 Ng8+–) 18...Bd8 19.Qh6 Qc7 20.dc7 Kc7 21.Ne5 Kb7 22.Qf8 Ra8 23.Qd8 Be8 24.Nc4 Nbd7 (24...Ne4 25.Ne4 Nd7 26.Ncd6 Ka7 27.Qc7) 25.Nd6 Ka7 26.Qc7 1–0. Pierre – Valdy, internet, 2020.

3.a4 c6 4.e3 d6 5.c4 e6 6.b5 ab5 7.ab5 Ra1 8.Ba1 c5 9.Nf3 Nf6 10.Be2 Be7 11.0-0 (11.0-0 0-0 12.d4=; 11.d4 cd4 12.Bd4 0-0=). BeepBeepImAJeep (2600) – Jessejames88 (2325), lichess.org, 2018.

3.c4 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.c4 a6).

3.c4 d6 4.e3 Nd7 5.Nf3 Ngf6 6.Be2 Bb7 7.0-0 g6 8.d4 e6 9.Nbd2 Bg7 10.Qc2 0-0 11.e4 Qe7 12.a4 White intends b5 (12.Rfe1 Rfd8+=) 12...a5 (12...c5 13.Bc3=) 13.b5+= e5 14.Rfe1 ed4 15.Nd4 Rae8 Pawn e4, live or die! (worse 15...Ne4 16.Bd3 f5 A) worse 17.Ne4 Be4 18.Be4 fe4+=; B) worse 17.Be4 B1) worse 17...Be4 18.Ne4 fe4 19.Nc6+= (worse 19.Qe4 Qf7 20.Qd5 Ne5=); B2) 17...fe4 18.Ne4 Rae8=+; C) 17.f3+–) 16.Bf3 Ne5 17.Be2 Qd8 (17...Nfg4 18.h3 Nf6 19.f4+=) 18.f4+= Ned7 19.Bf3 Qa8 20.e5 (20.Rad1!?+=) 20...de5= 21.Bb7 Qb7 22.Nc6 ef4 23.Re8 (23.Ba3!? Nc5 24.Bc5 bc5 25.Nb3=) 23...Re8–/+ 24.Nf3 (24.Rf1 Nc5–/+) 24...Ne4 25.Bg7 Kg7 26.Qd3 (26.Rf1 Nb8 27.Nfd4 Nc6 28.Nc6 g5–/+) 26...Ndc5 27.Qd4 f6 28.Re1 Qc8 29.h4 (29.Qa1 Nd6–+) 29...Qd7 30.Qd7 Nd7 31.Nfd4 (31.Nd2 f5 (31...Nd2?! 32.Re8 Nc5 33.Re7 Kh6 34.Rc7=) 32.Nb3 Kf6–+) 31...Ndc5 32.Rf1 (32.h5 Na4 33.Nd8 Kh6–+ (33...Rd8?! 34.Ne6 Kh6 35.Nd8–+)) 32...Na4 33.Rf4 Nac5 34.g4 (34.Rf3 Nd2 35.Rc3 Re1 36.Kf2 Re4–+) 34...Nd6 0–1. GuestBBFM – GuestMXXD, freechess.org, 2017.

3.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 a6).

3.e3 Bb7 4.Nf3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 a6).

3.e3 c5 4.bc5 bc5 5.Qf3 Nc6 6.Nc3 Bb7 7.Nge2 (7.Rb1 Rb8=) 7...Nb4 8.Qb7 Nc2 (better 8...Rb8!? 9.Qa7 Qc8=) 9.Kd1+– Na1 10.Ba1 e6 11.g3 (11.Ng3 a5+–) 11...Nf6 (11...Qb8 12.Bg2 Qb7 13.Bb7+=) 12.Bg2+– Be7?? (better 12...Rb8 13.Qa6 Be7+–) 13.Qa8+– 0-0 (13...Qa8 14.Ba8 d5 15.Bb7+–) 14.Qd8 (14.Qa6 d5+–) 14...Rd8 15.Kc2 Ng4 (15...d5 16.d3+–) 16.h3 Ne5 17.Ne4 (better 17.Rb1!? f6+–) 17...Nc6 18.a3 h6 (18...d5 19.N4c3+–) 19.Rb1 Na5 (19...d5 20.Rb7 Kf8 21.N4c3+–) 20.d3 (20.d3 d5 21.Nd2+–; 20.Rb6!? Ra8 21.Nd6 Nc6 22.Bc6 dc6 23.Rc6 Bd6 24.Rd6 Ra7+–) 1–0. aravind555 (1805) – diegodemate (1750), lichess.org, 2020.

3.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 a6).

3.Nf3 Bb7 4.e3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 a6).

3.e3 c6

4.a4 d6 5.c4 e6 6.b5 ab5 7.cb5 c5 8.Nf3 Nf6 9.Be2 Bb7 10.0-0 (10.d4 Nbd7=) 10...Nbd7 11.d4 Be7 12.Nc3 (12.dc5 Nc5 13.Bd4 0-0=+) 12...0-0 13.Qb3 (13.Rc1 Qc7=) 13...Re8 (13...Qc7 14.Rfc1=) 14.Rfd1 Bf8 (14...Rc8 15.Rac1=) 15.h3 (15.Qc2 Qc7=) 15...Qc7 16.dc5 (16.Qc2 Rec8=) 16...Nc5=+ 17.Qc2 d5 18.Nd4 (better 18.Ng5 Bd6 19.Bh5=+) 18...Nce4?? (better 18...Rec8=+) 19.Ne4+– Qc2 20.Nc2 (better 20.Nf6 gf6 21.Nc2+–) 20...Ne4=+ 21.Bd4 Nc5 22.Bc5 Bc5 23.Nd4 e5 (23...Rec8 24.g3=+) 24.Nb3 (24.Nc6!? d4 25.ed4 ed4 26.Bf3+=) 24...Bb4=+ 25.Bf3 Red8 26.Rdc1 e4 (26...Ra7 27.Rc7 Bd6 28.Rcc1=) 27.Be2 (27.Bg4 Kf8=) 27...Rac8 (27...Rdc8 28.Rc8 Bc8 29.Rc1=) 28.Nd4 (28.Rc8 Rc8 29.a5 ba5 30.Na5 Ra8=) 28...Bc3 29.Rab1 Bd4 30.ed4 Kf8 31.Bg4 (31.Ra1=) 31...Ra8 (better 31...Rc4!?–/+) 32.Rc7+= Bc8 33.Ra1 (33.Bd1 Be6+=) 33...Bg4= 34.hg4 Ke8 (34...Rdc8 35.Rd7=) 35.Rb7 (35.Rc6 Rab8=) 35...Rd6 (35...Rdb8 36.Rb8 Rb8 37.f3=) 36.Kf1 Rad8 (36...Rh6 37.Ke2=) 37.a5 (37.Rc1 R8d7 38.Rc6 Rb7 39.Rd6 Ra7+–) 37...ba5= 38.Ra5 R8d7 39.Ra8 Ke7 40.Raa7 (40.Rbb8 Rd8=) 40...Rb7 41.Rb7 Rd7 42.Rb6 Rd6 43.Ra6 Ra6?? (better 43...Rd7=) 44.ba6+– Kd7 45.a7 Kc7 46.a8Q Kd6 47.Qf8 Ke6 48.Qg7 f6 49.Qh7 f5 50.Qf5 Kd6 51.Qe5 Kc6 52.Ke2 (better 52.g5 e3+–) 52...Kb5 53.Ke3 Kc4 54.g5 Kc3 (54...Kb4 55.g6 Ka3 56.Qb8 Ka4 57.g7 Ka3 58.Qb7 Ka4 59.g8Q Ka5 60.Qga8) 55.g6 Kc2 (55...Kb4 56.Qd6 Ka4 57.Qb6 Ka3 58.g7 Ka4 59.g8Q Ka3 60.Qa8) 56.g7 Kd1 (56...Kb3 57.Qd5 Kb2 58.g8Q Kc1 59.Qc8 Kb2 60.Qb5 Ka3 61.Qca6) 57.g8Q Ke1 (57...Kc2 58.Qc7 Kd1 59.Qg4 Ke1 60.Qe2) 58.Qgd5 (58.Qh5 Kf1 59.Qh1) 58...Kf1 59.g4 (59.Qh2 Ke1 60.Qh1) 59...Kg2 (59...Ke1 60.Qee4 Kd1 61.Qb1) 60.f4! Kf1 (60...Kg3 61.Qee4 Kg4 62.Qg6 Kh4 63.Qdh5) 61.Qde4 (61.Qee4 Ke1 62.Qb1) 61...Kg1 62.Qf3 (62.f5 Kf1 63.Qh1) 62...Kh2 63.Qh5 Kg1 64.Qhh1 (64.Qf2) 1–0. BeepBeepImAJeep (2580) – Jessejames88 (2345), lichess.org, 2018.

4.a4 e6 5.Nf3 f6 (5...Bb4?? 6.Bg7 d5 7.Bh8+–) 6.Be2 Bb4 7.Nd4 d5 8.Bd3 Ne7 9.Qh5 g6 10.Qh6 (10.Qh4 Qd6 11.Qf6 Rf8=) 10...Kf7 11.0-0 (better is 11.f4!?–/+) 11...e5–+ 12.Nb3 e4 13.Be2 Nf5 14.Qf4 (14.Qh3 h5 15.Bd1–+) 14...Bd6 15.Qg4 Ne3! 16.Qh4 (16.de3 Bg4 Discovered attack; 16.fe3 Bg4 Discovered attack) 16...Nf1 17.Bf1 Nd7 18.Nd4 Ne5 19.Ne2 (19.a5 Kg7 20.h3 b5–+) 19...f5 20.Qd8 (20.Qh6 Qf6 21.Kh1 g5–+) 20...Rd8 21.d4 (21.Nc1 c5–+) 21...ed3 22.cd3 Nd3 23.Bd4 c5 24.Be3 d4 (24...f4 25.Bd2–+) 25.Bg5 Be7 26.Be7 Ke7 27.Nd2 Bb7 28.Ng3 Bc6 (better is 28...Nb4–+) 29.Bd3 Kf6 30.h4 b5 31.ab5 (31.Rc1 c4 32.Nc4 bc4 33.Rc4–+) 31...ab5 32.Rb1 c4 33.Be2 (33.Bc4 bc4 34.Rb6 Rdc8 35.Nc4 d3–+) 33...Ra2 34.Ngf1 c3 35.Nf3 (35.Bb5 Bb5 36.Rb5 cd2 37.Rb1–+) 35...Re2 36.Ng5 h6 37.Nh3 g5 38.hg5 hg5 39.f3 (39.Rc1 b4 40.Ng3 d3–+) 39...d3 40.Nf2 d2 41.Ng3 Re1 42.Re1 de1Q (42...de1Q 43.Nf1 c2 44.Ne4 fe4 45.f4 e3 46.fg5 Kg5 47.Kh2 Rh8 48.Kg1 Qf2) 0–1. wojtekkk – fawq, kurnik, 2011.

4.d3 d6 5.Be2 e5 6.Bf3 f5 7.a3 Nf6 8.Bh5 g6 9.Be2 Bg7 10.Nf3 Qe7 11.Ng5 d5 Black prepares e4 12.Nf3 Nbd7 13.Nbd2 e4 14.Nd4 Bb7 15.0-0 0-0 16.Re1 Ne5 17.Nf1 Rad8 18.Ng3 c5 19.bc5 bc5 20.Nb3 ed3 21.Bd3 Nd3 22.cd3 (22.Qd3? c4 23.Qd1 cb3 24.cb3 Qd6–+) 22...Rc8 23.Na5 Ba8 24.Bf6 Bf6 25.Rb1? (25.d4 c4 26.Rc1 f4 27.ef4 Qa3–/+) 25...Qc7 (better is 25...Bc3 26.Nb3 Be1 27.Qe1 c4 28.dc4 dc4–+) 26.Nb3–/+ Qc6 27.h3 d4 28.e4 fe4 29.Ne4 Exerts pressure on the backward pawn (worse is 29.de4 Rfd8–/+) 29...c4 (better is 29...Be7=) 30.Nf6?? (better is 30.Na5 Qd7 31.Nc4 (worse is 31.dc4 Bh4 32.g3 Rce8–/+) 31...Be4 32.Re4+/–) 30...Qf6–+ 31.dc4?? (31.f3 cb3 32.Qb3 Kg7 33.Qb6–+) 31...Qf2 32.Kh1 Qg2 0–1. wojtekkk – fawq, kurnik, 2011.

4.Be2 d6 5.Bf3 e5 6.d3 f5 7.Bh5 g6 8.Bf3 Nf6 9.g3 Bg7 10.Ne2 Qe7 11.0-0 d5 Black intends e4 12.a3 0-0 13.Nd2 e4 14.Bg2 Nbd7 15.Nf4 Ne5 16.de4 fe4 17.Be5 Qe5 18.Rb1 Bg4 19.Qc1 Rad8 20.Nb3 Bf3?? 21.Nd4 Bg2–/+ 22.Kg2 Rd6 23.c4 g5?? 24.Nfe2 c5+= 25.bc5 bc5 26.Nb3 d4 27.ed4= cd4 28.Nbd4 Rd4 29.Nd4 Qd4 30.Rd1 Qe5 31.c5 Qf5 32.Qe3 Ng4–+ 33.Qe2 Nf2 34.Rf1? Qh3 35.Kg1–/+ Ng4 36.Rf8 Bf8 37.Qg2?? Bc5–+ 38.Kh1 Nf2 39.Kg1 Qc8 40.Kf1 a5 41.Rc1 Qa6 42.Ke1 Nd3 43.Kd2 Nc1 44.Kc1 Qd3 45.Qa2 Kg7 46.Qe6 Ba3 0–1. wojtekkk – fawq, kurnik, 2011.

4.Be2 d6 5.Bf3 e6 6.Ne2 f6 7.Bh5 g6 8.Bf3 h6 9.Ng3 Ne7? (9...d5 10.a3=) 10.d3 (better is 10.Bf6!? Rg8 11.a4+/–) 10...Bg7 11.a4 Nd7 12.0-0 Bb7 13.Ne4 d5 14.Nd6 Kf8 15.Nb7 Qc7 16.Nd6 Qd6 17.Ba3 Qc7 18.Nd2 Kf7 19.e4 de4 20.Ne4 Ne5 21.b5 ab5 22.ab5 c5 23.Ng5?? hg5–+ 24.Ba8 Ra8 25.h3 Rd8 26.Bb2 Nf5 27.Be5 fe5 28.Qf3= e4 29.de4 Ba1 30.Ra1 Qf4 31.ef5 Qf3 32.fe6 Ke6 33.gf3 Kd5?? 34.Ra6 Rd6+= 35.Kf1 Kc4 36.Ra2 Kb5 37.Kg2 Kc4 38.Kg3 Rd4 39.Ra3 Rd2 40.c3 b5 41.Kg4 Rf2 42.Kg5 Rc2 43.Kg6 Rc3 44.Ra1 Rf3 45.h4 Rh3 46.h5 b4 47.Rc1 Kb5 48.h6 c4 49.Kg7 b3 50.h7 b2 51.Rd1 c3 52.h8Q Rh8 53.Kh8 c2 54.Rd5 Kc4 55.Rd8 b1Q 56.Rc8 Kd5 57.Rd8 Ke6 58.Re8 Kd7 59.Rg8 c1Q 60.Rg7 Ke6 61.Rg6 Ke5 62.Rg7 Qh6 63.Kg8 Qg7! 64.Kg7 Qb6 65.Kf7 Qe6 66.Kf8 Qd7 67.Kg8 Kf6 68.Kf8 Qf7 0–1. wojtekkk (1645) – sb01lzr, kurnik, 2011.

4.Nf3 d6 5.Be2 e6 6.0-0 f6 7.c4 g6 8.Ng5 Bg7 9.f4 Nh6 10.Bg4?? (better is 10.Nf3+=) 10...Qe7–+ (10...Ng4?! 11.Qg4 0-0 12.Ne6–/+) 11.Ne4 0-0?? (better is 11...Ng4 12.Qg4 f5 13.Bg7 Qg7 14.Nd6 Kd7–/+) 12.Bf3= d5 13.cd5 cd5 14.Ng3 f5 15.Bg7 Qg7 16.Nc3 Qe7? 17.a3?? Nd7?? 18.d3?? Bb7+= 19.e4 de4 20.de4 Nf6 21.ef5 Bf3 22.Rf3 ef5 23.Nd5 Nd5 24.Qd5 Qf7 25.Rd1 Qd5 26.Rd5 Ng4 27.Rfd3 Rac8 28.Rd7 Rc1 29.Nf1 Rfc8 30.h3 Nf6 31.Rb7 Ne4 32.Rdd7 Ra1 33.Rh7 Rcc1= 34.Rhg7 Kf8 35.Rg6?? Rf1 36.Kh2 Rh1 0–1. elsh1403 – sb01lzr, kurnik, 2011.

4.f4 d6 5.Nf3 e6 6.c4 f6 7.Nc3 g6 8.Be2 h6 9.0-0 Ne7 (9...Bg7 10.c5!+/–) 10.Nd4 (better is 10.Ne4!? Bg7 11.Bf6+– (11.Nf6?! Kf7=)) 10...Bg7+= 11.c5 bc5 (11...bc5 12.bc5 Combination; 11...dc5 12.bc5 Combination) 12.bc5 dc5 13.Nf3 Nd7 14.Rb1 0-0 15.Ba3 Nd5 16.Nd5 (16.Na4!?+=) 16...cd5= 17.d4 c4 (better is 17...Qa5!? 18.Qc1 Rf7=) 18.Bf8+= Qf8 19.Qa4 Qd6 20.Qb4 (20.Nh4 Nf8+=) 20...Qc7 (better is 20...Qb4!? 21.Rb4 Kf7=) 21.Qe7+= Qc6 22.Nh4 Bf8 23.Qd8 Bb7 24.Qa5 Kg7 25.g4 g5 26.fg5 hg5 27.Nf3 Bd6 28.Rb2 Rh8 29.Rfb1 Ba8 30.Kg2 e5 31.Bd1 e4–/+ 32.Ng5? fg5–+ 33.Ba4 Rh2 34.Kg1 Rb2 35.Bc6 Rb1 36.Kf2 Bc6 37.Qa6 Rb6 38.Qc8 c3 39.Qd8 c2 40.Qg5 Kf7 41.Qf5 Ke8 42.Qg6 Kd8 43.Qd6 c1Q 44.g5 Rb2 (44...Rb2 45.Kg3 Qg1 46.Kh3 Rg2 47.Qf6 Nf6 48.gf6 Rh2#; 44...Rb1 45.Qe7 Ke7 46.Kg3 Qe3 47.Kh4 Rh1 48.Kg4 Qf3#) 0–1. wybitnytalent (1605) – sb01lzr, kurnik, 2011.

2.Bb2 c5

3.bc5+= Nc6 4.d4 e6 5.Nd2 Be7? (5...b6 6.cb6 Qb6 7.Rb1+=) 6.e4 (6.d5 ed5 7.Bg7 Bf6 8.Bh8 Bh8+–) 6...Nf6 7.Ngf3 d6? (better is 7...b5+/–) 8.cd6+– Bf8 9.e5 Nd5 10.Bd3 f6 11.0-0 f5 12.c4 Nb6 13.Qb3 g5 14.d5 Na5 15.Qb4 g4 16.Ne1 Nc6 17.dc6 bc6 18.Bd4 Nd7 19.c5 Qg5 20.g3 h5 21.Be3 Qg6 22.Ng2 Bh6 23.Qd4 Bg5 24.Bg5 Qg5 25.Qf4 Qg7 26.f3 Nf8 27.fg4 hg4 28.Nh4 Bd7 29.Rab1 Ng6 30.Ng6 Qg6 31.Rb7 Qh5 32.Rf2 Bc8 33.Rg7 Rb8 34.Nb3 a5 35.Rg5 Qh7 36.Rg4 fg4 37.Bh7 (37.Bh7 Rh7 38.Qf8 Kd7 39.Rf7 Rf7 40.Qf7 Kd8 41.Qe7) 1–0. bratek55 – wehnstein (1605), kurnik, 2011.

3.bc5 Nc6 4.d4 e6 5.e4 d6 6.cd6 Bd6 7.c3 Nge7 8.Nd2 0-0 9.e5 Bc7 10.f4 f6 11.Ngf3 fe5 12.fe5 b5 13.Bd3 Bb7? (13...Be5 14.a4 ba4 15.Qc2+/– (worse is 15.de5 Qd3 16.Qe2 Qe2 17.Ke2 Ng6+=; 15.Ne5?! Ne5 16.Bh7 Kh7 17.Qh5 Kg8 18.Qe5 Ng6+/–)) 14.0-0?? (better is 14.Ng5 g6 15.Ne6 Ne5 16.Bf1+– (16.Nd8?! Nd3 17.Ke2 Nf4 18.Kf2 Ng2 19.Nf3 Bf3 20.Qf3 Rf3 21.Kf3 Nh4 22.Kg4 Rd8 23.Kh4 Rf8+=; 16.de5?! Qd3 17.Nc7 Rac8 18.Qb3 Kh8+–)) 14...Nf5 15.Qe2 Nce7 (15...Bb6 16.Rab1+/–) 16.Ne4 Nd5 17.Nc5 Bc8 18.Bf5 Rf5 19.Nd2 Rf1 20.Rf1 Qe7 21.Nde4 Bd7 22.Ba3 b4 23.cb4 Bb6? 24.Nd6 Nc3? 25.Qd2 Nb5 26.Bb2 Nd6 27.ed6 Qd6 28.a3 Bb5 29.Re1 Re8 30.Qg5 Qd5 31.Qd5+– ed5 32.Re8 Be8 33.Na6 Bb5 34.Nc5 Bc5 35.dc5 Kf7 36.Kf2 g6 37.Ke3 Ke6 38.Kd4 Bc6 39.Bc1 Bb5 40.Bf4 Bc6 41.h3 Bb5 42.g4 Bc6 43.Bh6 Bb5 44.Bg7 Bc6 45.Kc3 Bb5 46.Bh8 Bc6 47.Kb3 Bb5 48.a4 Bc4 49.Kc3 Bf1 50.b5 Kd7 51.h4 Bc4 52.Kd4 Kc7 53.Be5 Kb7 54.g5 1–0. amator111 (1675) – wehnstein (1745), kurnik, 2011.

3.bc5+= Nf6 4.d4 Nc6 5.Nf3 d5 6.e3 g6 (6...b6!?+=) 7.Nbd2 Bg7 8.Bd3 0-0 9.0-0 Re8 10.c4 Nb4 11.Be2 dc4 12.Bc4 b5 13.Be2 Bb7 14.a3 Nbd5 15.Ne5 Nd7? (15...Qc7 16.Rc1+–) 16.Ndf3 (16.c6 Be5 17.cb7 (17.de5?! Bc6 18.Rc1 Rc8+=; 17.cd7?! Bh2 18.Kh2 Qd7+–) 17...Bh2 18.Kh2 Qc7 19.f4+–) 16...Ne5+/– 17.Ne5 Be5 18.de5 Qc7 19.Rc1 Rad8 20.Qc2 e6 21.Bf3 Qc6 22.Bd4 Rc8 23.h4 Qc7 24.h5 Bc6 25.hg6 hg6 26.Be4 Kg7 27.Qe2 Rh8 28.Qf3 Qe7 29.Bd5 Bd5 30.Qf6 Qf6 31.ef6 Kf8 32.f3 Rh5 33.e4 Bc4 34.Rfd1 e5 35.Be3 Ke8 36.Rd6 1–0. bratek55 (1640) – anyrteb (1610), kurnik, 2011.

3.Nf3 cb4 4.d3 d6 5.Nbd2 e5 6.g3 Nc6 7.Bg2 a5 8.0-0 Bd7 9.c3 Qc8 10.Qb3 bc3 11.Bc3 d5 12.a3 Be6 13.Qb2 d4 14.Bd4 Nd4 15.Nd4 ed4 16.Rac1 Qd7 17.Nc4 Rc8 18.Nb6 Qd6?? 19.Nc8+– Qd7 20.Nb6 Qd6 21.Nc4 Qd7 22.Na5 Bh3 23.Nb7 Qg4 24.Rc8! Kf7 25.Qb3 Kg6 26.Be4 f5 27.Qb6 Kg5 Black plans f4 28.Bf3 Qf3 29.ef3 f4 30.Qb5 Kh6 31.Qc6 g6 32.g4 Bf1 33.Kf1 Ne7 34.g5! Kg5 35.Qc5 Kh6 36.Rf8! Rf8 37.Qe7 Rf5 38.Qe6 Rb5 39.Nc5! Rb1 40.Kg2 Ra1 41.Qg4 Ra3 42.Qf4 Kg7 43.Qd4 Kh6 44.Ne6 Ra8 45.Qg7 Kh5 46.Qh7# 1–0. linakip – banjoman, kurnik, 2011.

2.Bb2 Nc6

3.a3 a5 4.b5 Na7 5.e3 Nb5 6.Bb5 c6 7.Be2 b5 8.Nf3 Qc7 9.c4 e5 10.cb5 cb5 11.Bb5 a4 12.Be5 Bd6 13.Bg7 Be5 14.Be5 Qe5 15.Ne5 1–0. Adamkosh (1945) – YassineS, lichess.org, 2019.

3.a3 a5 4.c3 ab4 5.cb4 b6 6.Nf3 Nf6 7.e3 d6 8.Bb5 Bd7 9.0-0 e6 10.d3 Be7 11.Nbd2 0-0 12.Qc2 Ne5 13.Bd7 Ned7 14.Rfc1 c5 15.bc5 bc5 16.Nc4 h6 17.d4 Nh7 18.dc5 dc5 19.Nce5 Ne5 20.Ne5 Bf6 21.Nf3 Bb2 22.Qb2 Qf6 23.Qf6 Nf6 24.Rc5 Rfc8 25.Rc8 Rc8 26.h3 Ra8 27.a4 Nd5 28.Nd4 Nc3 29.a5 e5 30.Nc6 f6 31.a6 Nb5 32.Ra5 Nc7 33.a7 Kf7 34.f3 Ke6 35.Kf2 Kd6 36.Nb4 Kd7 37.e4 Kc8 38.Nd5 Kb7 39.Nc7 Kc7 40.g4 Kb7 41.Rd5 Ra7 42.Rd7 Kb6 43.Ra7 Ka7 44.Ke3 Kb6 45.f4 Kc5 46.fe5 fe5 47.Kd3 Kb4 48.h4 g6 49.h5 g5 50.Ke3 Kc3 51.Kf3 Kd3 0–1. Phomopsis (1620) – DDP7 (1625), lichess.org, 2019.

3.a3 Nd4?? 4.Bd4+– b5 5.Nc3 c6 6.Nf3 Bb7 7.e4 Nh6 8.Bd3 Ng4 9.0-0 g5 10.Bh8 Bh6 (10...e6 11.Nd4 Nh6 12.Qh5+–; 10...Qc7+–) 11.Nd4 Rc8 (11...Nf6 12.e5 Nd5 13.Qh5+–) 12.Qg4 Qb6 13.Nf5 Rc7 14.Nh6 c5 15.Nf5 Bc6 16.Nd6! Kf8 (16...ed6 17.bc5 Double attack (17.bc5 Decoy)) 17.Qg5 cb4 (17...ed6 18.Qd8) 18.Qg7 1–0. usingprogram – maeoy123, internet, 2011.

3.a3 d6 4.g3 e5+= 5.Bg2 Bd7 6.Nf3= Nh6 (6...e4 7.Nd4 Nf6 8.0-0=) 7.d3 (7.d4 e4 8.Nfd2 e3 9.fe3 Ng4=) 7...Be7 8.Nbd2 (8.0-0 0-0=) 8...0-0 9.0-0 Rc8 (9...Re8 10.c4=) 10.c4 (10.d4 ed4 11.Nd4 Bf6 12.Nc6 Bc6 13.Bf6 Qf6 14.Bc6 bc6=) 10...Be6 (10...Nf5 11.e4 Nfd4 12.Nd4 Nd4 13.f4=) 11.Ne4 (11.Re1 Nf5=) 11...f6 (11...f5 12.Nc3=) 12.Rc1 White plans c5 (12.Nc3 Nf7+=) 12...Na7 (12...d5 13.cd5 Bd5 14.Nc5 Bc5 15.Rc5+=) 13.c5 (13.Qd2 c5=) 13...Bf5 (13...Nc6 14.Qc2=) 14.Nh4 (14.cd6 cd6 15.Qb3 Nf7 16.Rc8 Nc8+=) 14...Bg4 (14...Be6 15.cd6 cd6 16.Nc3=) 15.h3 (15.Qb3 Kh8 16.cd6 cd6 17.Rc8 Qc8=) 15...Bd7 (15...Be6 16.Nf3=) 16.Kh2 (16.Qb3!? Nf7 17.Nf3+=) 16...Be6 (16...f5 17.Nd2 Bh4 18.Bd5 Nf7 19.gh4=) 17.f4 (17.f4 ef4 18.gf4+= (worse is 18.Rf4 g5–/+); 17.cd6!? cd6 18.Nc3=). cocohubert (1760) – Rickytan (1730), internet, 2007.

3.a3 f6 4.e4 Nh6 5.d4 g5 (5...e5 6.d5 Ne7 7.Nf3+=) 6.d5+/– Na7 7.Qh5 Nf7 8.e5 (8.Nf3 h6+/–) 8...fe5 (better is 8...Bg7+/–) 9.Be5+– d6 (9...Rg8 10.Qh7 Nh6+–) 10.Bh8 Nb5 (10...Bf5 11.Nf3 Bg6 12.Qh3+–) 11.c4 Nd4 (11...Bf5 12.cb5 Bg6 13.Qf3 Nh8 14.Qc3+–) 12.Bd4 b6 (12...e5 13.de6 Be6 14.Qh7+–) 13.Qh7 g4 (13...e5 14.de6 Be6 15.Qe4+–) 14.Nc3 Ng5 (14...Qd7 15.Ra2+–) 15.Qg6 Kd7 16.Qg5 Rb8 17.Qg4 e6 18.Qe6 1–0. pcmvr (2530) – jac, net–chess.com, 2006.

3.a3 h6 4.e3 e6 5.Nf3 d6 6.Be2 e5 7.0-0 Nf6 8.d4 e4 9.Nfd2 d5 10.c4 Ne7 11.Nc3 c6 12.Qb3 Be6 13.Rfc1 Rc8 14.cd5 cd5 15.Qd1 Ng6 16.Nb3 Bd6 17.Nc5 b6 18.Na6 0-0 19.Nb5 Rc1 20.Rc1 Qd7 21.Nd6 Qd6 22.a4 Bc8 23.Ba3 Qe6 24.Nc7 Qd7 25.Bb5 Qf5 26.Bc6 Ng4 27.Qd2 Qg5 28.Bd5 Ne7 29.Be4 Nh2 30.f3 f5 31.Qa2 Kh8 32.Bd5 Nd5 33.Qd5 Rf6 34.Kh2 Rg6 35.f4 Qg3 36.Kh1 Qe3 37.Qd8 Kh7 38.Qc8 Qc1 39.Bc1 Rg4 40.Qf5 Rg6 41.Ne8 b5 42.Nd6 ba4 43.Nf7 a3 44.g4 a2 45.Qe4 a1Q 46.f5 Qc1 47.Kh2 Qc2 0–1. Orang4Utan (1690) – ipavelv (1750), lichess.org, 2018.

3.a3 h6 4.e3 f6?? 5.Qh5 g6 6.Qg6 1–0. GuestBXJD – GuestSHXV, freechess.org, 2016.

3.a3 Nh6 4.e3 (4.Nf3 d6=) 4...d5 5.Nf3 Bg4 (5...Bf5 6.b5 Nb8 7.Nc3=) 6.Be2 f6 (6...f6 7.0-0 e5=; 6...Qd6 7.d4=). makaveli1982 – DARKMAN, internet, 2007.

3.a4 Nb4–/+ 4.e3 d5 5.Nf3 Bg4 6.Be2 Bf3 7.Bf3 e6 8.0-0 Nf6 9.Nc3 Be7 10.Ne2 0-0 11.c4 (11.Rb1 Bd6–/+) 11...c6 (11...dc4 12.Bf6 Bf6 13.Rb1–/+) 12.cd5 cd5 13.Qb3 a5 14.Nd4 Rc8 15.Nb5 (15.Rab1 Nd7–/+) 15...b6 (15...Ne4 16.Bc3–/+) 16.Na7 (better 16.Bf6 Bf6 17.d4–/+) 16...Rc2 (better 16...Ra8 17.Nb5 Ne4–/+) 17.Bc3+= Qc7 18.Bd1 (18.Nb5 Qc5+=) 18...Qa7 (better 18...Rc3!? 19.dc3 Qa7 20.cb4 Bb4=+) 19.Bc2+= Nc2 20.Qc2 Ne4 21.Bd4 Bc5 22.Be5 f6 23.Bc3 e5 (23...Nc3 24.Qc3 Qd7 25.Rfc1+=) 24.Qb3 (24.d4 Bd6 25.Qb3 Nc3 26.Qc3 Rd8+–) 24...Rd8 (24...Qf7!? 25.Rae1 Nc3 26.Qc3 d4+=) 25.d4+– ed4 26.Bd4 (26.ed4 Be7+–) 26...Kh8?? (26...Nd2 27.Qc3 Nf1 28.Rf1=+) 27.f3?? (better 27.Rfd1 Qc7 28.Rac1+–) 27...Nd2=+ 28.Qa2 (28.Qc3!? Nf1 29.Rf1=+) 28...Nf1–/+ 29.Kf1 Bd4 30.ed4 Qa6 31.Kf2 Qd3 32.Qb2 Re8 (32...Rc8 33.Ra2–/+) 33.Re1 The mate threat is Rxe8 33...Re1 34.Ke1 Qe3 35.Qe2? (35.Kf1 Qe6–/+) 35...Qe2 (better 35...Qg1!? 36.Kd2 Qd4 37.Qd3 Qb4 38.Qc3 Kg8–+) 36.Ke2–/+ Kg8 37.Kd3 Kf7 38.Kc3 Ke6 39.g3 g5 40.h3 f5 41.Kd3 h5 42.Ke3 Kf6 (42...Kd6 43.Kd2–+) 43.Kd3 f4 44.Kc3 (44.g4 h4 45.Kd2–+) 44…fg3 (44...fg3 45.Kd3 g2–+) 0–1. aravind555 (1615) – Odessey (1625), lichess.org, 2018.

3.c3 e6 4.Nf3 Nf6 5.d4 Be7 6.Nbd2 d5 7.e3 0-0 8.Bd3 Qd6 9.0-0 b5 10.Qc2 a5 11.a3 a4? 12.Bb5+– Ba6 13.Ba6 Ra6 14.b5 Rb6 15.bc6 Qc6 16.c4 Qb7 17.Bc3 (17…Qa8 18.Rfb1+–) 1–0. Wall,Bill – Zamadarovski, internet, 2000.

3.e3 Nb4 4.Nf3 c5 5.a3 Nc6 6.d4 (6.c4!?=) 6...cd4–/+ 7.Nd4 Qb6 8.Nb3 e5 9.Nc3 Nf6 10.Be2 Be7 11.0-0 0-0 12.g4 h6 13.h4 d6 (13...Qd8 14.g5 hg5 15.hg5–/+) 14.g5 hg5 15.hg5 Nh7 (15...Ne8 16.Nd5 Qd8 17.f4+=) 16.g6 fg6 17.Qd5 Rf7 18.Bc4 Ng5 19.Qd3 Be6 20.Be6 Ne6 21.Nd5 Qd8 22.Qg6 Bf6 (22...Nc7 23.Nb6 Rf6 24.Qg2–+) 23.Qg4 Nc7 24.Nb6 Rb8 25.Nd2 Qe7 (25...Na8 26.Nd5 Ne7 27.c4+= (27.Nf6? Rf6 28.Qc4 d5–+)) 26.Ne4= Rd8 27.a4 Qe6 28.Qe6 Ne6 29.Rfd1 Attacking the backward pawn on d6 (29.Rad1 Be7=) 29...Be7 (29...Bh4 30.Ba3–/+) 30.Ba3+= Increases the pressure on the backward pawn 30...Nc5 (30...Rf5!?+=) 31.Bc5= dc5 32.c3 Bh4 33.Kg2 Rdf8 (33...Na5 34.Rh1 Be7 35.Rad1+=) 34.Ra2+= Rd8 35.Rad2 Rd2 36.Rd2 Bd8 (36...Be7 37.Rd5+=) 37.Nd7 Be7 38.Rb2 Nd8 39.Ne5 Rf5 40.Nc4 Rd5 41.Kf3 (41.Rb1 Kh7+/–) 41...Kf7 (41...Rd7 42.Na5+=) 42.Rb6 Rf5 (42...Ke8 43.Rb1+/–) 43.Ke2 Rd5 (43...Kf8!?+/–) 44.Ncd6+– Bd6 (44...Kf8 45.Nb7 Nb7 46.Rb7+–) 45.Nd6 (45.Rd6?! Rd6 46.Nd6 Ke6=) 45...Rd6?? (45...Kf8 46.Nb7 Nb7 47.Rb7 Rh5+–) 46.Rd6 Ke7 47.Rb6 Kd7 48.Kd3 g5 (48...Kc7 49.Rg6 b5 50.Ra6 ba4 51.Kc4+–) 49.Kc4 g4 (49...Kc7 50.Kc5 Nf7 51.Rg6+–) 50.Kc5 Ne6 51.Kd5 Ng5 (51...Nc7 52.Ke5 Kc8 53.Rb4+–) 52.Rb7 Kc8 1–0. phildo (1815) – emece (1705), gameknot.com, 2013.

3.e4 Nb4 4.a3 Nc6 5.a4 e5–/+ 6.a5 Bb4 7.Nf3 d6 8.h4 Ba5 9.Nc3 Nf6 10.Bc4 Bb4 11.Ng5 0-0 12.Nd5 h6 13.Rh3? hg5 14.hg5 Ne4 15.Qh5 Bh3 16.gh3 Bd2 17.Kd1 Qg5 18.Qe2 Qg1 19.Qe1 Qe1 0–1. carosse – amtrack (1935), net–chess.com, 2004.

3.e4 Nb4 4.c4 d6 5.Qa4 Nc6 6.d4 Bd7 7.Qc2 e5 8.d5 Nce7 9.Bd3 Ng6 10.Ne2 Be7 11.h3 (11.f4 Bh4 12.g3 Bf6=+) 11...Nf6 (11...Nh4 12.Rh2–/+) 12.Nd2 0-0 13.a4 c6 14.Bc3 Qc7 15.0-0 Rfc8 16.Rfb1 Nh5 17.a5 Nhf4 18.Nf4 Nf4 (18...ef4?! 19.Qb2 cd5 20.ed5+= (worse 20.Qb7 f3=+)) 19.Rb3 Nd3 20.Qd3 Bg5 21.Nf3 cd5 22.ed5 Bf6 23.Nd2 Be7 24.Rb6 Bb5 Increases the pressure on the backward pawn (better 24...h6=) 25.cb5+– White gets deadly initiative. 25...Qc3 26.Qc3 Rc3 27.Rb7 Kf8 28.ba6 Ke8 (28...f5!?+–) 29.a7 Rcc8 (29...Bd8 30.Ne4 Rc7 31.Nd6 Kd7 32.Rc7 Bc7 33.Nf7 Ra7 34.a6+–) 30.a6 (30.Nc4 Ra7 31.Ra7 Rc4+–) 30...Kd8 (30...Bd8 31.Ne4 Be7+–) 31.Rab1 f5 (31...Bg5 32.Rf7 Ke8 33.Rg7+–) 32.Nc4!! (32.Nc4 Rc4 33.Rb8 Rc8 34.Ra8 Ra8 35.Rb8 Kc7 36.Ra8+–) 1–0. petrobbo (1900) – wasteofspace (2045), ChessWorld.net, 2010.

3.Nf3 Nb4 4.e3 Nc6 5.d4 (5.Be2 d6=+) 5...d5 6.Bd3 (6.c4 e6=+) 6...Nf6 (6...Nb4 7.Be2–/+) 7.0-0 Bg4 8.Nbd2 (better 8.Ba3–/+) 8...e5 (better 8...e6!?–/+) 9.de5= Ne5?? (better 9...Nd7=) 10.Be5+– Bb4 (10...Bd6 11.Qb1 Rb8 12.Bd6 Qd6 13.c4+–) 11.Qb1 Qe7 (11...Bd2 12.Nd2 b6 13.Ba6+–) 12.Bf6 gf6 13.a3! Bd6 (13...Ba3 14.Qa2 Double attack (14.Qb7 Pinning; 14.Qb7 Deflection; 14.Qa2 Decoy)) 14.Qb7 0-0 (14...Qd8 15.e4+–) 15.Qd5 (15.Ba6?! Rfb8 16.Qd5 Ra6+–) 15...Bh5 (15...Ba3 16.Bh7! Kh7 17.Qd3 f5 18.Ra3 Rfd8+–) 16.Qh5 f5 17.Bf5 (17.Nh4!? Rfd8 18.Nf5 Qf6+–) 17...f6 18.Nd4 (better 18.Nc4 Kh8+–) 18...Rfd8 (18...Kh8 19.Ne4 Be5 20.f4 Bd4 21.ed4+–) 19.Ne4 (19.Be4 Qf7 20.Qg4 Kh8 21.Ba8 Ra8+–) 19...Be5 20.Nc6 Qg7 21.Ne5 (better 21.Nd8 Rd8 22.Rfd1 Bd6 23.Bh7 Kf8+–) 21...fe5 22.Bh7! Qh7 23.Nf6 Kg7 24.Nh7 Rh8 25.Rfd1 Rh7 26.Rd7 Kf6 27.Rh7 Rg8 28.Qf7 Kg5 29.h4 Kg4 30.Qe6 1–0. DEFFM – theplayerjtox, freechess.org, 2018.

3.a3 b5

4.Nc3 e6 5.e4 Nf6 6.Bd3 d5 7.Qf3 d4 (7...Ne5 8.Qg3 Nd3 9.cd3=+) 8.Nce2 (8.e5 Nd5 9.Nd5 ed5+=) 8...Ne5 (better 8...e5=+) 9.Nd4?? (better 9.Qg3 Bd6 A) worse 10.Nd4 Nc4 (worse 10...Nd3 11.Qd3 Bb7 12.f3+=) 11.Ne6 Bg3 (worse 11...Nb2 12.Qg7 Be6 13.Qh8 Ke7 14.Qd8 Rd8 15.Nf3=) 12.Nd8 Nb2 13.Nf7 Bf2 14.Kf2 Rf8–+; B) 10.Bd4 Nd3 11.Qd3+=) 9...Nf3–+ 10.Ndf3 c5 11.bc5 Bc5 12.Ne2 Ng4 13.0-0 Rg8 14.h3 Bf2 (14...Nh6 15.a4 b4 16.Bd4–+) 15.Rf2 (15.Kh1 Bc5 16.hg4 Bb7–+) 15...Nf2 16.Kf2 h6 17.c4 (17.a4 ba4 18.Bd4–+) 17...Qd3 18.Bd4 Qc4 19.Bc3 (19.Rc1 Qd3–+) 19...Qe4 20.Ng3 a5 (better 20...Qd5–+) 21.Ne4= Ke7 22.d4 f5 (22...Bb7 23.Nc5 Bd5 24.Ne5=+) 23.Ng3 (better 23.Nc5+–) 23...Bb7= 24.Rb1 Rgc8 25.Ba1 (better 25.Ne2 b4 26.ab4=) 25...Rc2 26.Kg1? (26.Ne2!? b4 27.d5 Bd5 28.ab4–/+) 26...f4 27.Nf1 Bc6 (better 27...Bd5!?–+) 28.d5–/+ ed5 (28...Bd5 29.Rb5 a4–/+) 29.Ne5? (better 29.Nd4!? Rc5 30.Nc6 Rc6 31.Rb5=) 29...Bb7 (29...Be8!? 30.Nf3 Kf7 31.Be5–+) 30.Rb5 Rc7 (30...Ba6 31.Rb1–/+ (31.Rd5? Rc1 32.Bb2 Rf1 33.Kh2 Ke6–+)) 31.Kh2 (31.Ng6 Kf7 32.Be5 Rd7 33.Nf4 Re8+=) 31...Bc6 (better 31...Ba6!? 32.Rb1 Rac8=+) 32.Nc6+= Rc6 33.Bg7 (worse 33.Rd5 Rc1 34.Bg7 Rf1 35.Bh6 Ra6 36.Bg5 Ke6–/+) 33...Rc1 (33...Rc2 34.Rb7 (34.Bh6 Rg8 35.h4 Rgg2 36.Kh1 Ke6 37.Bf4 Rgf2 38.Rb6 Kf7 39.Rb7 Kg6 40.Rb6 Kh5 41.Rh6 Kg4 42.Ne3 Kh3–+) 34...Ke6 35.Rb6 Kf7 36.Bd4= (worse 36.Bh6 Rg8 37.Rb7 Kf6–/+)) 34.Rb7 Ke6 35.Bh6?? (better 35.Nd2 h5 36.Rb6 Kd7 37.Be5+–) 35...Rf1–+ 36.Rb6 Ke5 37.Bg7 Kf5 38.Rf6 Kg5 39.Rd6 Rd1 40.Bf6 Kf5 41.Bg7 (41.h4 Re8 42.Bg5 Kg4–+) 41...Rd2 (better 41...Rc8 42.Rf6 Kg5 43.h4 Kg4 44.Rg6 Kh4 45.Bf6 Kh5 46.Rg5 Kh6–+) 42.Bh6?? (42.Rf6 Kg5 43.h4 Kh4 44.Rf4 Kg5 45.Rf3–+) 42...f3 (42...Rg8 43.Kh1 Ke5 44.Rd7 Rdg2 45.Bf4 Kf4 46.h4–+) 43.Kg1?? (better 43.Bd2 f2 44.Bc3 (44.Rd5 Ke4 45.Rf5 Kf5 46.g4 Ke4–+) 44...f1N 45.Kg1+–) 43...Rg2–+ 44.Kf1 Rb8 45.Rd5 Ke4 46.Rd1 Rh2 47.Re1 Kf5 48.Re3 (48.Bg7 f2 49.Rd1 Rh1 50.Kf2 Rd1–+) 48...Rb1 49.Re1 Rbb2 (49...Rbb2 50.Re5 Kf6 51.Bg7 Kg7 52.Rg5 Kf6 53.Kg1 Rhe2 54.Kh1 Kg5 55.h4 Kh4 56.Kg1 Re1) 0–1. WarlpiriMan – Pewro (1810), ChessWorld.net, 2020.

4.e3 Bb7 5.c4 Na7 6.cb5 Nb5 7.Nf3 e6 8.d4 Bd6 9.Bd3 c6 (9...Nf6 10.0-0+=) 10.Nc3 Na7 (10...Nc3 11.Bc3 Ne7 12.e4+/–) 11.0-0 Nf6 12.Qc2 (12.e4 Be7 13.e5+/–) 12...0-0 (12...a5 13.ba5 Qa5 14.e4+/–) 13.Ne4 (13.e4 Bf4+–) 13...Qe7? (better is 13...Ne4 14.Be4 f5+=) 14.Nf6 Qf6 15.Bh7 Kh8 16.Bd3 Qh6 17.g3 (17.Ne5 Bc7+–) 17...f5 (17...c5 18.Ne5 (18.dc5?! Bf3 19.Be2 Be2 20.Qe2 Be7+=; worse is 18.bc5 Bf3 19.Rfc1 Bc7+=) 18...cb4 19.ab4+/–) 18.Rac1 (18.Ne5 Rad8+–) 18...Rac8 (18...c5 19.Ne5 (19.dc5?! Bf3 20.Be2 Be2 21.Qe2 Bc7+=; worse is 19.bc5 Bf3 20.Be2 Be4+=) 19...cb4 20.ab4+/–) 19.Qe2 g6 20.Ba6 Ba6 21.Qa6 Rc7 22.d5 e5 23.dc6 dc6 24.Ne5 Rfc8 25.Nf7 Kh7 26.Nh6 Kh6 27.Rfd1 Rd7 28.Rd6! Rd6 29.Qa7 Rd2 30.Qg7 Kh5 31.Bf6 Rd6 32.h3 Re8 33.Qh7# 1–0. Fournier,Frederic – Chicot,Patricia, Train France (FRA), 2006.

4.e3 Bb7 5.Nf3 Nf6 +=.

4.e3 Bb7 5.Nf3 g6?? 6.Bh8+– Nf6 7.c4 d6 (7...bc4 8.Bc4 e6 9.0-0+–) 8.cb5 ab5 9.Bb5 Bh6 (9...Nd7+–) 10.Nd4 Kf8 11.Bc6 (11.Bc6 Bc6 12.Nc6+–) 1–0. GuestGHCZ – GuestLGMH, freechess.org, 2019.

4.e3 e5 5.c4 bc4 6.Bc4 Qf6 7.Nc3 (7.Qf3 Rb8 8.Bc3 Bb7=) 7...Nge7 (7...Qg6 8.Qf3+=) 8.Qb3 (8.Nf3 Qg6+=) 8...d6 (8...Qg6!?=) 9.Nd5+= Nd5?? (better 9...Qg6 10.Nc7 Kd8 11.Na8 Qg2+–) 10.Bd5+– Bd7 11.Qc4 (11.Qc3 Rb8 12.Bc6 Rb6 13.Bd7 Kd7+–) 11...Qg6 (11...Na5 12.Qc7 Qd8 13.Qa5 Qa5 14.ba5+–) 12.Bc6 Be7 (12...Ra7+–) 13.Ba8 0-0 14.Bb7 (14.Qa6 Qc2 15.Bc3 Be6+–) 14...c5 (14...c6 15.g3 d5 16.Qa6+–) 15.Qe4 (15.bc5!? a5+–) 15...Bf5 16.Qf3 (16.Qc6 Bd3+–) 16...e4 (16...cb4 17.ab4 e4 18.Qg3 Qg3 19.hg3+–) 17.Qg3 Qg3 18.hg3 h6 (18...Rb8 19.Ba6 cb4 20.ab4 Rb4 21.Bc3+–) 19.Ba6 f6 (19...cb4 20.ab4 Rb8 21.b5+–) 20.Bc4 Kh8 (20...Kh7 21.b5+–) 21.b5 Rd8 22.Bd5 Rc8 23.Rc1 (23.a4 Bd7+–) 23...Rb8 24.a4 Kh7 25.Ne2 Bg4 26.f3 (26.Be4!? Kg8+–) 26...ef3 27.gf3 Bd7 28.Nc3 (28.Nf4 f5+–) 28...f5 29.Kf2 (29.Ne2 Bc8+–) 29...Kg6 30.e4 (30.Ne2 Kh7+–) 30...fe4 31.Be4 Kf7 32.Nd5 Bf6 33.Nf6 (33.Bf6 gf6 34.Rh6 Bc8 35.Rf6 Kg8+–) 33...gf6 34.Rh6 Kg7 35.Rf6 Kg8 36.Rd6 (36.Bd5 Be6 37.Be6 Kg7 38.Rf4 Kg6 39.Rg4 Kh6 40.Rh1) 1–0. jaddwarrior (2010) – Greg1982, ChessWorld.net, 2015.

4.e3 Nf6 5.c4 h5? (better 5...bc4!? 6.Bc4 Bb7+=) 6.cb5+– Ne5?? (better 6...ab5 7.Bb5 Na7+–) 7.Be5+– Ne4 (7...Ng4 8.Nf3+–) 8.ba6 Ba6 9.Ba6 Ra6 10.Nc3 (10.Qc2 Qa8+–) 10...Re6 (10...Nc3 11.Bc3 Qa8 12.Qf3+–) 11.Bd4 (11.Ne4 Re5 12.d3 Re6+–) 11...d5 (11...Nc3 12.dc3 Ra6 13.Nf3+–) 12.Ne4 de4 13.Ne2 Rhh6 14.Qa4 c6 15.b5 (15.Qc2 h4+–) 15...Qd7 (15...cb5 16.Qb5 Qd7 17.Qb8 Qd8 18.Rb1+–) 16.bc6 (better 16.b6!? c5 17.Qa8 Qd8+–) 16...Rc6 17.0-0 g5 18.Rac1 (better 18.Ng3!? f5 19.Rab1 e6 20.Rb8 Kf7+–) 18...Rc1 19.Qd7 Kd7 20.Rc1 Rg6 (20...e6 21.a4+–) 21.a4 (21.Ng3 e5 22.Be5 f5 23.Nh5 Ba3 24.Rc7 Kd8+–) 21...g4 (21...f5 22.Rb1 e6 23.Rb7 Kc6 24.Rb6 Kd7 25.Ng3+–) 22.Nf4 (better 22.Ng3!? Re6 23.Nh5 Ra6+–) 22...Rg5 23.h3 (23.Bb6!? Bg7+–) 23...e5 24.h4 Rg7 (24...Rf5 25.Bc5 ef4 26.Bf8 fe3 27.de3+–) 25.Nh5 (25.Be5 Rh7 26.Rc7 Ke8+–) 25...Ba3 (25...ed4 26.Ng7 Bg7 27.a5+–) 26.Rb1 (26.Rc4 Rg6 27.Be5 Be7+–) 26...Rh7 (26...Rg6 27.Be5 Be7 28.Rb7 Kd8 29.Ng3+–) 27.Nf6 Ke7 28.Be5 (better 28.Nh7!? ed4 29.Rb7 Ke8 30.Nf6 Kf8+–) 28...Rh4 29.Rb7 Kf8 (29...Ke6 30.Bd4+–) 30.Ne4 (30.Rb8 Kg7 31.Rg8 Kh6 32.Bf4) 30...Bc1 (30...f5 31.Ng3 Kg8+–) 31.Bf6 (31.Bf6 Kg8 32.Bh4+–; 31.Rb8 Ke7 32.Nf6 Rh1 33.Kh1 Ke6 34.Re8 Kf5 35.e4 Kg5 36.Rg8 Kh4 37.Rg4) 1–0. GuestJRTR – GuestLFQD, freechess.org, 2017.

4.e4 a5 5.ba5 (5.Bb5!? Bb7 6.ba5 Na5 7.Nc3+–) 5...Na5 (5...Ra5 6.Bc3 b4 7.ab4 Ra1 8.Ba1 Nb4 9.Nf3=) 6.Nf3 (worse 6.Bb5 Rb8 7.Bc3 Rb5=+) 6...Nc4 (6...c6 7.Be2+=) 7.Bd4 (7.Bc4 bc4 8.0-0 d6+–) 7...Nf6 (7...Bb7 8.Bc4 bc4 9.Qe2+=) 8.Nc3+– e6 The pressure on the isolated pawn grows (8...c6!? 9.Bc4 bc4+–) 9.Nb5 Nd6 10.e5 Nb5 11.Bb5 (11.ef6 Nd4 12.Nd4 Qf6–/+) 11...Nd5 12.0-0 (12.a4 c6 13.Be2 c5+–) 12...Be7 (12...Ra3 13.Ra3 Ba3 14.c4+–) 13.c4 Nb6 (13...Nf4!?+–) 14.a4+– Bb7 (14...c5 15.Bc3 Ba6 16.Qb1+–) 15.a5 Nc8 16.Qe2 (16.a6 Be4 17.Qe2 Bg6+–) 16...Ba6 (16...0-0+–) 17.Qe4 c6 18.Bc6! Rb8 (18...dc6 19.Qc6 Double attack) 19.Bb5! Bb5 20.cb5 Rb5 21.a6 Nb6 (21...d5 22.Qg4 g5+–) 22.Bb6 Rb6 (22...Qb6 23.a7 0-0+–) 23.a7 d5 (23...Rb4 24.d4 d5 25.ed6+–) 24.Qa4 Rc6 (24...Kf8 25.a8Q Rb8+–) 25.Qc6 Qd7 26.a8Q Bd8 27.Qd8! Kd8 (27...Kd8 28.Ra8 Mate attack) 28.Ra8 Ke7 (28...Qc8 29.Rc8 Ke7 30.Qd6) 29.Qc5 (29.Qc5 Qd6 30.Qd6) 1–0. Janek – yxdjango, internet, 2017.

4.e4 Bb7 5.g3 g6?? (Better is 5...Nf6=+) 6.Bh8+– e6 7.Qf3 Nd4 (7...f6 8.Qg2 Ne5+–) 8.Bd4 Ne7 9.Ne2 d5 10.Nbc3 Nc6 11.ed5 ed5 12.Bh3 Qe7 (12...Nd4 13.Nd4 Bg7+–) 13.Nd5 (Better is 13.Bf6 Qd6 14.Qd5+–) 13...Qd7?? (13...Nd4 14.Nf6 Kd8+–) 14.Nf6 (14...Ke7 15.Bd7 Nd4 16.Qb7 Nc2 17.Kd1 Kf6 18.Kc2+–) 1–0. willi_weizenkeim – Grunert, playchess.de, 2003.

4.e4 d5 5.ed5 Qd5 6.d4 e5 7.Nf3 Bg4 8.Be2 Bf3 (Better is 8...ed4 9.0-0 0-0-0=) 9.Bf3+/– Qd7 10.Bc6 (Better is 10.d5 Nd4 11.Bd4 ed4 12.Qe2 Kd8 13.0-0+–) 10...Qc6+= 11.0-0 Bd6 12.de5 Be7 13.Nc3 Nh6 14.Qg4?? (Better is 14.Nd5+–) 14...Ng4–+ (15.Rad1 Rd8–+) 0–1. chessH – Kunk, ChessWorld.net, 2003.

4.e4 Nf6 5.Nc3 e5 6.Nf3 d5 7.ed5 Nd5 8.Qe2 f6 9.0-0-0 g6 10.d4+/– a5? 11.Qb5?? Bd7?? 12.Qd5+– ed4 13.Bc4 Bh6 14.Kb1 Rf8 15.Rde1 Ne7 16.Qd4 ab4 17.Nb5 Rf7 18.Bf7 Kf7 19.Qf6 Ke8 20.Nc7! Qc7 21.Qe7# 1–0. Knight – Master1, mySchach.de, 2004.

4.Nf3 Bb7 5.e4 e5 6.c4+= bc4 7.Bc4 d6 8.0-0 Nh6 9.Bd5 (9...Ng8 10.Qb3+/–) 1–0. Decker,Dale – MacDonald,Alasdair, corr, 1996.

4.Nf3 Nf6 5.e3 d5 6.d4 e6 7.Bd3 Bd6 8.0-0 0-0 9.Nbd2 Nh5 10.Ne5+– Ne5? 11.de5 Be7 12.Qh5 (12...h6 13.Nb3+–) 1–0. Wall,Bill – KingVVI, internet, 2001.

4.e4 e5

5.c4 Bb7 6.cb5+/– ab5 (6...Nd4 7.Nf3 Nb5 8.Ne5+=) 7.Bb5 (7.Nc3 Nd4 8.Nb5 Nb5 9.Bb5 Be4+/–) 7...Nf6 (7...Nd4 8.Bd3+=) 8.Bc6 (8.Nf3 Ne4 9.Qe2 Na7+/–) 8...Bc6 9.f3 (9.d3 d5 10.Nf3 de4 11.Ne5 Ba4+/–) 9...d6 (9...Nh5 10.Ne2+= (worse is 10.Be5 Qg5 11.Bg3 Ng3 12.hg3 Qg3 13.Kf1 Bb4+=)) 10.d4+/– Ba4 11.Qd2 (11.Qd3 ed4 12.Bd4 c5 13.Bf6 Qf6+/–) 11...Nd7 (11...ed4 12.Bd4 c5 13.Bb2+/–) 12.Ne2 c6 (12...Qh4 13.Ng3+/–) 13.Nbc3 (13.0-0 Be7+/–) 13...Be7 (13...Bb3 14.0-0+/–) 14.Na4+– Ra4 15.Nc3 (15.0-0 0-0+–) 15...Ra8+/– 16.0-0 Qb6 17.Ne2 0-0 18.f4 (18.Ng3 Bf6 19.Nf5 d5+–) 18...ef4 19.Nf4 (19.Qf4 d5+/–) 19...Ne5 (19...Bg5 20.Qe2+/–) 20.Qc3+– Bf6 (20...Rfe8!?+–) 21.Nh5 Nd7 22.Nf6 Nf6 23.Rf4 d5+/– 24.Qc5 Qc7?? 25.e5 Ne4+/– 26.Qc2 Qe7 27.Qc6+– White creates threats along the open c–file 27...Qe6 28.b5?? Rab8? 29.a4?? Qc6–/+ 30.bc6 Rb2 31.Rc1 Rc8–+ 32.Rcf1 Nd2 33.Rc1 Rc6?? 34.Rc6+– The mate threat is Rc8 34...Rb1 35.Kf2 h6? 36.Rc8 Kh7 37.Rd8 Rb4?? 38.Rd5+– Ra4 39.Rf7 Ne4 40.Ke3 Ng5 41.Rb7 Ne6 42.Ke4 Rd4 43.Rd4 Nc5 44.Kf5 Nb7 45.e6 Kg8 46.Kg6 Kf8 47.Rd7 Nc5 48.Rg7 Ne6 49.Rf7 Ke8 50.Rf1 Nc5 51.h4 h5 52.Kh5 Ne4 53.Kg6 Ng3 54.Rf7 Nh5 55.Rf3 (55.Rf3 Kd7 56.g4+–) 1–0. Rine,A – Brown,D, Colorado (year?).

5.c4 Rb8 6.Nf3 +=.

5.Nf3 d5 6.ed5 Qd5 7.Nc3 +=.

5.Nf3 d6 6.c4 Rb8 +=.

5.Nf3 d6 6.c4 Nf6 7.cb5 ab5 8.Bb5 Bd7 9.Qc2 Na7 10.Bd7 Qd7 11.0-0 Be7 12.d4 ed4 13.Nd4 Nb5 (13...0-0 14.Rc1+–) 14.Nf5 0-0 (14...Rg8 15.a4 Na7 16.Rd1+–) 15.Qc1 (better is 15.Qc6 Rfe8 16.Qd7 Nd7 17.Ng7+–) 15...Ne4?? (better is 15...Bd8+–) 16.Qh6!! (16.Ng7?! d5+/–) 16...gh6 (16...Bf6 17.Bf6 gh6 18.Nh6) 17.Nh6# 1–0. Buettner,Fritz (2180) – Tortoza,Carlos, CiF, 2005.

5.Nf3 d6 6.Be2 Bb7 (6...Nf6 7.c4 bc4 8.Bc4+=) 7.0-0 (better is 7.c4+=) 7...a5? (7...Nf6!?+=) 8.d4 (8.Bb5 ab4 9.ab4 Ke7+–) 8...ab4+/– 9.d5 Na7 10.Re1 (10.ab4 Nf6 11.Nc3 c6+/–) 10...Nf6 (better is 10...ba3!? 11.Ba3 Nf6=) 11.ab4+/– c6 (11...Ne4? 12.Ra7 Ra7 13.Bb5 c6 14.dc6+–) 12.dc6 Nc6 13.Ra8 Qa8 14.Bb5 Ba6 15.Ba4 Bc4 16.Nc3 Be7 17.Bc6 Qc6+/– 18.g3 Nd7 19.Kg2 0-0 20.h3 Nf6 21.h4 g6 22.h5 Nh5= 23.Ne2? Rc8 24.Neg1 Bb5 25.c3 Bc4 26.Ne2? Qe4–+ 27.Neg1 Qb7 28.Nh3 Bd5 29.Nhg1 Rc4 Black intends e4 30.Nh3? h6 31.Kh2?? Bf3 32.Qd2 g5 Black prepares the advance e4 33.Re3 e4 34.Ng1 g4 35.Ne2 Bg5 36.Nf4 Nf4 37.gf4 Bf4 38.Kg1 Qb6 39.Qd5 Be3 40.fe3 Qe3 41.Kh2 Qe2 42.Kg1 Qg2# 0–1. pieeater – xorb, ChessWorld.net, 2010.

5.Nf3 Nf6 6.Be2 Ne4 7.Nc3 d5 8.Bd3 Nc3 9.Bc3 e4 10.Be2 ef3 11.Bf3 Bf5 12.0-0 Be4 13.Be4 de4 14.Qe2 Qd5 15.d3 Qe6 16.de4 Bd6 17.Bg7 Rg8 18.Bh6 Qh6 19.g3 Be5 20.Rad1 Rd8 21.Rc1 Nd4 22.Qd3 Bf4 23.Rfe1 Bc1 24.e5 Bb2 25.a4 Qh5 26.ab5 Nf3 27.Kf1 Rd3 28.cd3 Qh2 29.Ke2 Rg3 30.Rb1 Nd4 31.Kd2 Qf2 32.Kd1 Rg1# 0–1. pieeater – 488, ChessWorld.net, 2012.

3.a3 d5

4.d3 e5 5.e4 de4–/+ 6.de4 Qd1 7.Kd1 Nf6 8.Nc3 Bd6 9.Nf3 Bg4 10.Be2 0-0-0 (10...Rd8 11.Ke1–/+) 11.Ng5=+ Be2 12.Ke2 Rd7 13.Nd5 Nd5 (13...Nd4 14.Bd4 Nd5 15.ed5 ed4 16.Kd3=) 14.ed5 Ne7 (14...Nd4 15.Kd3+=) 15.Rad1 (15.Nf7!? Rf8 16.Nd6 cd6 17.c4+–) 15...Ng6+= 16.c4 f6 (16...Rhd8 17.Rhe1= (worse 17.Nh7 f6=+)) 17.Ne4 White prepares c5 (17.Ne6 Re8+–) 17...Nf4+= 18.Kf3 (18.Kf1 Rhd8+=) 18...f5= 19.Nd6 cd6 20.c5 (20.Rhe1 g5=) 20...Ng6 (20...Nd3 21.Rd3 e4 22.Ke3 ed3 23.c6 bc6 24.dc6 Re7 25.Kd3=+) 21.Rc1 Kb8 22.a4 (better 22.Rhd1+=) 22...dc5–/+ 23.Rc5 Rc8 (23...b6!? 24.Rc6 Rd5–/+) 24.d6 (24.Rd1 b6 25.Rc8 Kc8+=) 24...Rd6 (better 24...e4 25.Kg3 f4 26.Kg4 Rd6 27.Rc8 Kc8 28.Bg7 e3=+) 25.Re1? e5 becomes the focus of attention (better 25.Be5 Ne5 26.Re5 Rc3 27.Re3=) 25...Rc5–+ 26.bc5 Rd5 27.Rc1 Rd3 (27...Kc7 28.g4 fg4 29.Kg4–+) 28.Ke2 Nf4 29.Kf1 Rd2?? (better 29...Rd5–+) 30.Be5+– Ka7 (30...Kc8 31.Bf4 Rd4 32.Be5 Ra4 33.Bg7+–) 31.Bf4 Ra2 32.c6 (better 32.Bc7!? a5 33.Rc4 Ka6+–) 32...Ra4 (32...bc6 33.Rc6 Ra1 34.Rc1 Ra4+–) 33.c7 (33.c7 g5 34.Be3 b6 35.c8Q Rc4 36.Rc4 h5 37.Rc7) 1–0. Agiant – Rissorz, lichess.org, 2018.

4.d4 e6 5.Nd2 Nf6 6.f3 (6.e3 Bd7=) 6...Be7 7.e4 de4 8.Ne4 0-0 9.Ne2 Ne4 10.fe4 Bg5 11.c3 Ne7 (11...e5 12.Qc2=+) 12.e5 c6 (12...Nf5 13.Bc1=) 13.Ng3 Bh4 14.Bd3 Bg3 (14...Nf5 15.Qf3+=) 15.hg3+– Nd5?? (better 15...h6+–) 16.Bh7 Kh8 17.Bc2 Kg8 (17...Qh4 18.Rh4 Kg8 19.Rh8 Kh8 20.Qh5 Kg8 21.Qh7) 18.Qh5 (18.Rh8 Kh8 19.Qh5 Kg8 20.Qh7) 18...f6 (18...f5 19.Bd1 Nf6 20.ef6 Qf6+–) 19.Qh7 (19.Bg6 Nc3 20.Qh7) 19...Kf7 20.Bg6 Ke7 21.Qg7 (21.Qg7 Rf7 22.Qf7) 1–0. alt20 – freedii, lichess.org, 2015.

4.d4 Nf6 5.Nf3 e6 6.e3 b5 7.Bd3 Bd6 8.0-0 0-0 9.Re1 Re8 10.e4 e5 11.de5 Ne5 12.Ne5 Be5 13.Be5 Re5 14.ed5 Re1 15.Qe1 Qd5 16.Nc3 Qe6 17.Ne4 Ne4 18.Qe4 Qe4 19.Be4 Rb8 20.Bc6 Rb6 21.Re1 Be6 22.Rd1 g6 23.Bf3 Rb8 24.h3 Kf8 25.Kf1 Ke8 26.Ke1 Rb6 27.c3 Bc8 28.Kd2 Rd6 29.Kc2 Rd1 30.Kd1 Ke7 31.Bd5 ½–½. Zimmer – Loetzbeier, (year?).

4.e3 (--> 1.b4 d5 2.Bb2 a6 3.e3 Nc6 4.a3).

4.Nf3 (--> 1.b4 d5 2.Bb2 a6 3.Nf3 Nc6 4.a3).

4.g3 d4 5.Bg2 e5 6.Nf3 Nf6 (6...e4 7.Ng1=) 7.d3 (7.e3 Be7=) 7...Bd6 8.Nbd2 Bg4 (8...0-0 9.0-0=) 9.c4 Bf3 (9...dc3!? 10.Bc3 Nd5=) 10.Nf3 0-0 11.0-0 Be7 (11...Ng4 12.h3 Nh6 13.e3+–) 12.Nd2 (12.b5 Na5+–) 12...h6 (12...Qd7 13.Nb3=) 13.c5 Rb8 (13...a5!?+=) 14.Nc4+– Ng4 (14...Re8 15.Bc6 bc6 16.Ne5+–) 15.h3 (15.Bc6 bc6 16.e3 Qc8+–) 15...Nf6 16.Bc6 bc6 17.Ne5 Qd5 18.Nf3 (better 18.Nc4+–) 18...g5?? (18...Bc5 19.e4 de3 20.Bf6 Rfe8+=) 19.Bd4+– g4 (19...a5 20.Qd2+–) 20.hg4 Ng4 21.e4 (better 21.Qa4+–) 21...Qg5 (21...Qe6 22.Qa4+–) 22.Nh2 (better 22.Ng5 Nf2 23.Rf2 Bg5 24.Qg4+–) 22...Qh5 (22...Nh2 23.Kh2 f5+–) 23.Qg4 Qg4 24.Ng4 h5 25.Ne5 (25.Nh6!? Kh7 26.Nf5 Rbd8+–) 25...Bf6 26.Nc6 Bd4 27.Nd4 Rfd8 (27...Rbd8 28.Ne2 Rd3 29.Nf4+–) 28.Nc6 Rd3 (28...Ra8 29.Nd8 Rd8 30.Rad1+–) 29.Nb8 1–0. JUANKARODA (1795) – eutopia (1850), lichess.org, 2020.

4.h3 e5 5.g4 Bd6 6.Bg2 Be6 7.e3 Nge7 8.d3 f5 (8...Ng6 9.Nc3 Be7 10.Nf3=+) 9.gf5 Nf5 10.Ne2 (10.c4!? d4 11.Bc6 bc6 12.e4=+) 10...0-0 11.Nd2?? (better 11.Rg1!?–/+) 11...Qg5 (better 11...Ne3 12.Bd5 Bd5–+) 12.Rg1 Qe7 (12...Ne3 13.Bd5 A) 13...Nd1 A1) worse 14.Rg5 Bd5 (worse 14...Nb2 15.Be6 Kh8 16.Rb1+–) 15.Rd1 Be7=+; A2) 14.Be6 Kh8 15.Rg5 Nb2 16.Rb1+–; B) 13...Bd5?! 14.Rg5 Nd1 15.Rd1=+; C) 13...Qh4 14.Be6 Kh8–+) 13.Nb3 d4 (13...Rad8!?–/+) 14.ed4= Nfd4 15.Ned4 ed4 16.Nd4?? (16.Qe2 Qf6 17.Bc6 Bb3 18.Bb7= (worse 18.cb3 bc6 19.Rg4 Bf4=+)) 16...Bg4?? (better 16...Nd4 17.Bd4 Bg4 18.Kf1 Bd1 19.Bd5 Kh8 20.Bg7 Qg7 21.Rg7 Bc2–+) 17.Ne2+– Be2 18.Qe2 Qf7? (18...Rae8 19.Qe7 Re7 (19...Ne7? 20.Bb7 Ng6 21.Kf1+–) 20.Kf1 Rfe8+–) 19.Bd5! Rae8 (19...Qd5 20.Rg7 Double attack) 20.Rg7 Kh8 21.Rf7 Kg8 (21...Re5 22.Rf8 Kg7 23.Rf7 Kg6 24.Be5 Bb4 25.ab4 Ne5 26.Qe4 Kh6 27.Qh7 Kg5 28.f4) 22.Rf5 (22.Rg7 Kh8 23.Rg8) 22...Rf7 23.Bf7 Kf8 24.Qe8 1–0. adabriwala – Ravakshay27, lichess.org, 2019.

4.h3 e5=+ 5.g4 Be6 6.Bg2 Qd7 (6...h5 7.gh5 Rh5 8.c4=+) 7.e3 0-0-0 8.d3 (8.Nf3 f6=+) 8...f6 9.Ne2 Na7 (9...Nge7 10.f4=+) 10.Ng3 g6 11.Nc3 Bg7 12.Qf3 Ne7 13.Nce2 (13.Rg1 f5 14.gf5 Nf5 15.Nf5 gf5=+) 13...Qc6 (13...f5 14.gf5 Nf5 15.Nf5–/+) 14.Rc1 (14.c3 Rhf8=+) 14...Rhg8 (14...f5 15.e4 de4 16.Qe3=+) 15.0-0 (15.c4 dc4 16.Qc6 Nac6 (worse 16...bc6 17.dc4 f5 18.gf5 Nf5 19.Ne4+=; 16...Nec6?! 17.dc4 f5 18.Bd5 Bd5 19.cd5=) 17.dc4 f5=) 15...Rd6 (15...f5 16.gf5 Nf5 17.Nf5 gf5 18.Qh5–/+) 16.Rfd1 (16.c4 dc4 17.d4 Qf3 18.Bf3 Rd7=+) 16...Rgd8 (16...f5 17.gf5 Nf5 18.Nf5 gf5 19.d4–/+) 17.c3 Bh8 (better 17...R6d7 18.Nf1 h6=+) 18.Rc2? (better 18.e4=) 18...e4!–+ 19.de4 de4 20.Nd4?? (better 20.Rd6 ef3 21.Rc6 fe2 22.Rc7 Kc7 23.Re2–+) 20...ef3 21.Nc6 Rd1 (21...Rc6?! 22.Rd8 Kd8 23.Bf3–/+; 21...fg2?! 22.Rd6 Rd6 23.Ne7 Kd7 24.Ng6 hg6 25.c4–/+) 22.Kh2 (22.Nf1 fg2 23.Ne7 Kd7 24.Kg2 Bc4–+) 22...Nac6 23.Bf3 Bb3 (better 23...R1d2 24.Rd2 Rd2 25.Kg2–+) 24.Bd1 Rd1 (24...Bc2 25.Bc2 Rd2 26.Bb3 Rf2 27.Kg1 Rb2 28.Be6 Kd8 29.h4–+) 25.Re2 (25.Rc1 Rd2 26.Ba1 Rf2 27.Kg1 Ra2–+) 25...f5 (better 25...Bc4 26.Rc2 Ne5 27.Kg2–+) 26.gf5 (26.c4 Bb2 27.Rb2 Bc4 28.gf5 gf5–+) 26...gf5 27.a4 (27.f4 Bc4 28.Rg2 Re1–+) 27...Ne5 28.c4 White plans b5 28...Nf3 (28...Bc4 29.Be5 Be5 30.Rc2–+) 29.Kg2 Nh4 30.Kh2 Bb2 (30...Neg6!? 31.Nf5 Nf5 32.e4–+) 31.Rb2 Bc4 32.b5 (32.Ne2 Nf3 33.Kg3 Ne5–+) 32...ab5 33.ab5 b6 (33...Nf3 34.Kg2 Bd5 35.Nf1–+) 34.Nh5 (34.Ne2 Nf3 35.Kg3 Ne1–+) 34...Nf3 35.Kg3 Ne1 (better 35...Bd5 36.Nf4 Rg1 37.Ng2–+) 36.Nf6 (36.Rb4 Rc1 37.Ra4 Kb7–+) 36...h6 (36...Nd3 37.Rc2 Bb5 38.Nh7–+) 37.h4 (37.Rb4 Rc1 38.Ra4 Kb7–+) 37...Nd5 38.Nh5 (38.Nd5 Bd5 39.f4 Nd3–+) 38...Nd3 39.Ng7 (39.Rc2 Ne5 40.Rc4 Nc4–+) 39…Nb2 (39...Nb2 40.Nf5 Rg1 41.Kh2 Rf1 42.Nh6 Nd1–+) 0–1. adabriwala (1605) – dlmarche (1800), lichess.org, 2019.

4.h3 e5=+ 5.g4 f5 6.gf5=+ Bf5 7.d3 Nf6 8.e3 (8.Bg2 e4=+) 8...Be7 9.Ne2 0-0 10.Ng3 Bg6 (10...Be6 11.Bg2=+) 11.Bg2 e4 12.Qe2 (12.de4 Ne4 13.Ne4 de4 14.Qd8 Rad8=+ (worse 14...Nd8 15.Nd2+=)) 12...ed3 (12...Bd6 13.0-0–/+) 13.cd3=+ Qe8 14.Nc3 Rd8 15.h4 (15.Rg1=+) 15...Nh5 (15...d4 16.Bc6 Qc6 17.ed4 Rd4 18.Nce4 Ne4 19.de4–+) 16.0-0-0 (16.Nd5 Ng3 17.fg3 Bd6=) 16...Bf6 (better 16...Qf7!?–/+) 17.Bd5= Rd5? (better 17...Kh8 18.Nge4 Nf4 19.ef4 Bc3 20.Nc3 Qe2 21.Ne2 Rd5=) 18.Nd5+– Bb2 19.Kb2 (19.Qb2!? Ng3 20.fg3 Bf7+–) 19...Ng3 20.fg3 Nd4 (20...Qe5!? 21.Nc3 Qg3+–) 21.Qd2+– Nf3 22.Qc3 c6 23.Nf4 Bf7 (23...Qe3 24.Ng6 hg6 25.Rhf1+–) 24.Rdf1 (24.e4 Qe7+–) 24...Ne5? (24...Qe3 25.h5+–) 25.g4! b6 (25...Ng4 26.e4 Passed pawn) 26.Rh3 (26.Rhg1 c5+–) 26...c5 (26...Qe7 27.g5+–) 27.bc5 bc5 28.Nh5?? (better 28.Qc5 Qb8 29.Qb4+–) 28...Qe6=+ 29.Rf5?? (29.Kc1 Rb8 30.Rf7 Qf7 31.Nf4–+) 29...Rb8–+ 30.Kc2 (30.Kc1 Qa2 31.Qc2 Qa3 32.Kd2–+) 30...Qa2 31.Kd1 Rb1 32.Qc1 Bb3 (32...Bb3 33.Ke1 Rc1) 0–1. adabriwala (1605) – Juana1515 (1675), lichess.org, 2019.

4.h3 e5=+ 5.g4 Nf6 6.Bg2=+ Be6 7.e3 Be7 8.d3 0-0 9.Nd2 Re8 10.Nb3 b6 11.Ne2 Qd6 12.Ng3 Na7 (12...a5 13.b5 Na7 14.c4=+) 13.Nf5 Bf5 14.gf5 Nb5 (14...c5 15.bc5 bc5 16.c4=) 15.Qd2 (15.c4 Na7+=) 15...c5 Black prepares d4 16.bc5 bc5 17.Ke2 (17.c4 Na7 18.cd5 Nd5+=) 17...a5 (17...Rab8 18.a4 Nc7 19.Rab1–/+) 18.Rhg1 (18.a4!? Nc7 19.Na5=) 18...a4=+ 19.Nc1 d4 (better 19...Rab8 20.Ra2 c4=+) 20.Ba8+– Ra8 21.ed4 (21.c4 dc3 22.Bc3 e4+=) 21...ed4 (21...cd4 22.Ke1=) 22.Qg5 Qe5 23.Kf1 Nd5 24.Qg2 Nf4?? (better 24...Bf6 25.Qf3 Rb8=) 25.Qa8+– Bf8 26.Qc6 (26.Rg3!? Nd6 27.f6 Qf6+–) 26...Nh3 27.Qb5 (better 27.Rh1 Qf5 28.Rh2+–) 27...Qf4?? (better 27...Qh2 28.Rg2 Qh1 29.Ke2 Qg2=) 28.Rg2 Qd2 (28...Qf5 29.Ne2 Nf4 30.Nf4 Qf4 31.Qa4+–) 29.Ne2 1–0. adabriwala – cvetochek, lichess.org, 2019.

4.d3 Be6

5.Nd2 Qd7 6.g3 0-0-0 7.Bg2 h5 8.c4 Nh6 (8...dc4 9.Nc4 h4 10.gh4=) 9.cd5 (9.b5 ab5 10.cb5 Nb8+/–) 9...Bd5+= 10.Ngf3 Bf3 (10...f6 11.e4 Bf7 12.d4+=) 11.Nf3+/– e6 12.Qc2 Rg8 13.0-0 g6 14.Qa4 (14.Rfc1 Nf5+/–) 14...Bg7 15.b5 (better is 15.Bg7 Rg7 16.b5+/–) 15...ab5?? (better is 15...Bb2 16.Rab1 Bg7 17.bc6 Qc6 18.Qc6 bc6+=) 16.Qa8+– (16.Qb5?! Qd5 17.Qd5 ed5 18.Bg7 Rg7=) 16...Nb8 17.Bg7 Rg7 (17...Qd6 18.Bh6 Qa6 19.Qa6 ba6 20.Bg5+–) 18.Ne5 Qd5 19.Bd5 Rd5 20.Nf3 h4 21.a4 hg3 22.fg3 b4 23.Rfb1 Nf5 24.Rb4 Nd6 25.Rab1 b6 26.a5! Ra5 27.Qa5! ba5 28.Rb8 Kd7 29.Ra8 Nf5 30.Ra5 Rg8 31.Rb4 Nd6 32.e4 Ke7 33.Ne5 f6 34.Nc6 Kd7 35.Nd4 e5 36.Nf3 Ke6 37.Nh4 g5 38.Nf5! Nf7 39.Ra6 Kd7 40.Rb7 Rc8 41.Raa7 Kc6 42.Ne3 Nd6 43.Rb1 Kd7 44.Nd5 f5 45.ef5 Nf5 46.Rc1 Nd4 47.Rac7 Rc7 48.Rc7 Kd6 0–1. golfx – tylko3x3, kurnik, 2011.

5.Nd2 Qd6

6.g3 0-0-0 7.Bg2 h5 8.Ngf3 Bf5 9.c4 dc4 10.Nc4 Qg6? (better is 10...Qe6!? 11.Ne3 Bg4+/–) 11.Nh4+– Qh7? (11...Qe6 12.Nf5 Qf5 13.Bc6 bc6 14.Rc1+–) 12.Nf5 (better is 12.Bc6!? bc6 13.Qa4 Be6 14.Qa6 Kd7 15.Ne5 Ke8 16.Qc6 Bd7 17.Qc7 Nf6 18.Nf7 Rc8+–) 12...Qf5 13.Bc6 bc6 14.0-0 h4 15.e4 Qg6 16.Qf3 hg3 17.fg3 e6? 18.Qf7+– Qh6 19.Rf2 c5 20.Be5 Ne7 21.bc5 Rd3 22.Qe8 Rd8 23.Qa4 Ng6 24.Qa6 Kd7 25.Rd1 Ke7 26.Bc7 Rd1–+ 27.Kg2 Qh2 28.Kf3 Qh5 29.Ke3 Qc5 30.Kf3 Qc7 31.Qb6 Qb6 32.Nb6 Ne5 33.Kf4 Nd3 34.Ke3 Nf2 35.Kf2 Rb1 36.Nc4 Rb3 37.Kg2 Kf7 38.Ne5 Kg8 39.Ng6 Rh6 40.Ne5 Ra3 41.Ng4 Rg6 42.Kh3 Bd6 43.Kh4 Bg3 (43...Bg3 44.Kh3 Bd6 45.Kg2 Rg4 46.Kf2 Ra2 47.Kf1 Bc5 48.e5 Rg1#; 43...Rg3 44.Nf6 Rf6 45.e5 Be5 46.Kh5 Rh6#) 0–1. golfx – tylko3x3, kurnik, 2011.

6.g3 0-0-0 7.Bg2 h5 8.Ngf3 Bg4 9.c4 Bf3 10.Nf3 (10.ef3?! dc4 11.Nc4 Qd5=) 10...dc4 11.dc4 Qe6 12.Qc2 f6 13.0-0 g5? (13...Nh6!?+–) 14.b5 (14.Ng5!? fg5 15.Bh8 Nf6+–) 14...ab5 15.cb5 Na7 (15...Na5 16.Ng5! Qb3 17.Qb3 Nb3+–) 16.Nd4 (better is 16.Ng5!? fg5 17.Bh8 Nb5+–) 16...Rd4 (better is 16...Qb6+–) 17.Bd4 Nb5 18.Be3 g4 (18...h4 19.Rab1 Nd6 20.Rfc1+–) 19.Qa4 (better is 19.Rfd1 Bh6 20.Bd5+–) 19...Nd6? (19...Qa6 20.Qb3 Nd6+–) 20.Qa8 Kd7 21.Bb7 Nb7 22.Qb7 Ke8 23.Qc7 Kf7 24.Rfd1 h4 25.Rd4 hg3 26.hg3 Bh6 27.Bh6 Nh6 28.e3 Nf5 29.Rg4 Ne3 30.Qf4?? Ng4–+ 31.a4 Ne5 32.Qe3 Qh3 33.Qe4 Qh2 34.Kf1 Qh1 35.Qh1 Rh1 36.Ke2 Ra1 37.f4 Nd7 0–1. golfx – tylko3x3, kurnik, 2012.

6.g3 0-0-0 7.Bg2 h5 8.Ngf3 Nh6 9.c4 Rg8 (9...dc4!? 10.dc4 Bf5+=) 10.b5+/– dc4? (better is 10...Nb8+/–) 11.bc6+– Qc6 12.Nc4?? (better is 12.dc4 Qb6 13.Qc2+–) 12...Bc4= 13.Rc1 Ng4? (13...Qb6 14.Qd2 Ng4 15.0-0=) 14.Rc4 (better is 14.h3 Nf2 15.Kf2 Qb6 16.d4+–) 14...Qb6?? (14...Qc4 15.dc4 Rd1 16.Kd1 Nf2 17.Kc2 Nh1 18.Bh1=) 15.Qc1?? (better is 15.Bd4 Qa5 16.Bc3 Qa3 17.Qc2+–) 15...Qf2= 16.Kd1?? (better is 16.Kd2 Qg2 17.Rc7 Kb8 18.Rg1+–) 16...Ne3–+ 17.Kd2 Nc4 18.Qc4 Qg2 19.Rc1 c6 20.Qf7 Rh8 21.Qe6 Kb8 22.Ne5 Rd6 23.Qf7 g6 24.Nc4?? Bh6–+ 25.Kc3 Rf8 26.Qe7 Rdf6 27.Qe5 Ka8–+ 28.Rc2 Rf5 29.Qe7 R5f7 30.Qc5 Bg7 31.Kb3–/+ Bb2 32.Rb2 Qd5 33.Qb6? Qb5 34.Qb5–/+ ab5 35.Nd6 Rd7 36.Ne4 Rf1 37.Kb4 Ka7 38.a4 Rd4 39.Kc3 Rc1?? 40.Kd4+– c5?? 41.Nc5 Rc4 42.Kd5 Rc5 43.Kc5 b6 44.Kb5 Kb7 45.a5 Ka7 (45...Ka7 46.ab6 Kb8 47.Ra2 Kc8 48.Kc6 Kd8 49.b7 Ke7 50.b8Q Kf7 51.Ra7 Ke6 52.Qd6 Kf5 53.Ra5 Kg4 54.Qe6#). golfx – tylko3x3, kurnik, 2012.

6.g3 0-0-0 7.Bg2 h5 8.Ngf3 Nh6 9.c4 Rg8 (9...dc4 10.dc4 Ng4 11.Qc2+/–) 10.cd5 (10.b5!? Nb8 11.Be5+/–) 10...Bd5+= 11.Ne4 Be4 12.de4 Qd1 13.Rd1 Rd1 14.Kd1 g6 15.Kc2 (15.h3 Bg7 16.Bg7 Rg7+=) 15...Bg7= 16.Bg7 Rg7 17.Nh4 Ng4 18.h3 Nh6 (worse is 18...Nf2 19.Rf1 Nh3 20.Bh3 e6 21.Nf3+/–) 19.f4 (better is 19.Rd1!?=) 19...g5–/+ 20.fg5 Rg5 21.g4 hg4 22.hg4 Ng4 (worse is 22...Rg4 23.Bh3 Kd8 24.Bg4 Ng4 25.Rg1+=) 23.Bf3 Nge5 24.Nf5 e6 25.Ne3 Rg3 26.Rf1 Nf3 27.ef3 Nd4 28.Kd3 Nf3 29.Ke2 Nd4 30.Kd3 Nf3 31.Kc3?? Ne5 32.Kd2 b5 33.Nc2 Nc4 34.Kc1 Kd7 35.Rf7 Kd6 36.Rf1 Na3 37.Na3 Ra3 38.Kb2 Re3 39.Rf4 Ke5 40.Rf7 Re4 41.Rc7 Rb4 42.Kc3 Ra4 43.Rc5 Ke4 44.Kd2 e5 45.Rc3 a5 46.Re3 Kd5 47.Rd3 Rd4 48.Ke3 Rd3 49.Kd3 a4 50.Kc3 Kc5 51.Kd3 b4 52.Ke4 a3 53.Ke5 b3 54.Ke4 b2 55.Kd3 a2 56.Kc2 b1Q 57.Kc3 a1Q 58.Kd2 Qb4 59.Kd3 Qaa3 60.Kc2 Qbb2 61.Kd1 Qaa1# 0–1. golfx – tylko3x3, kurnik, 2012.

6.g3 Nf6 7.Bg2 g6 8.Ngf3 Bg7 9.0-0 0-0 10.c4 dc4 11.Nc4 Bc4 12.dc4 Rfd8 13.c5 (13.Qd6 cd6 14.Rac1 d5+=) 13...Qd1 14.Rfd1 Nd5 15.Bg7 Kg7 16.Nd4 (16.Rac1 Nf6+=) 16...Nc3 17.Rd3?? (better is 17.Bc6 bc6 18.Rdc1=) 17...Nd4–+ (17...Rd4?! 18.Rc3 Rad8 19.Bc6 bc6 20.Re3=) 18.Rc3 Ne2 19.Kf1 Nc3 20.Bb7 Ra7 21.Bc6 Rd1 22.Rd1 Nd1 23.Ke2 Nc3 24.Kd2 Nb5 25.a4 Nd4 26.Bd5 e6 27.Bc4 Ra8 28.h3 Rd8 29.Kc3 e5 30.Ba6 f5 31.Bc4 g5 32.a5 c6 33.a6 h5 34.Bd3 Kf6 35.g4 fg4 36.hg4 h4 37.Kc4 h3 38.Be4 h2 39.a7 Ra8 40.Bc6 Nc6 41.b5 Na7 42.b6 Nc6 43.Kb5 h1Q 44.b7 Rb8 45.Kb6 Rb7 46.Kb7 Nd4 47.Kb6 Qc6 48.Ka5 e4 49.Kb4 Ke5 50.Kc4 Qd5 51.Kc3 Qc5 52.Kd2 Kf4 53.Ke1 Nf3 54.Kf1 Qc1 55.Ke2 Qd2 56.Kf1 Qe1 57.Kg2 Qg1 58.Kh3 Qh2# (58...Qg4#) 0–1. golfx – lucyna545, kurnik, 2011.

4.d3 Bf5

5.Nd2 Qd6 6.Ngf3 0-0-0 7.g3 (7.c4 dc4 8.Nc4 Qe6+=) 7...f6 (7...d4 8.c4 e5 9.Bg2=) 8.c4+= e5 (better is 8...e6!?+=) 9.cd5+/– Qd5 (better is 9...Nce7+/–) 10.Nc4?? (better is 10.e4 Qd7 11.ef5+–) 10...e4= 11.de4?? (11.Ne3 Qb5 12.Nf5 Qf5+=) 11...Qe4?? 12.Qb1?? Qc4 13.Qf5+= Kb8 14.Bg2?? Qb3 15.Qb1 Nge7 16.0-0 h5 17.Bc1 Qe6 18.Be3 Nf5 19.Bc5 h4 20.Bf8 Rdf8 21.b5 Nce7 22.ba6+/– Qa6 23.Qb4 hg3= 24.hg3 Nd5 25.Qe4?? Nfe7 26.Rfb1 Nb6?? 27.a4 f5?? 28.Qf4 Ned5 29.Qd4+= Rd8 30.a5+/– Nf6?? 31.Qf4 Nbd5= 32.Qg5 Rh5 33.Qg7?? Rg8–+ 34.Qf7 Qe2?? 35.Ne5?? Qe5–/+ 36.a6 b6?? 37.a7+– Ka8 38.Bd5 Nd5 39.Qh5 Rg3?? 40.fg3 Qg3 41.Kh1 Qg8 42.Rg1 Qe8 43.Qe8 Kb7 44.a8Q# 1–0. golfx – tylko3x3, kurnik, 2012.

5.Nd2 Qd7 6.g3 0-0-0 7.Bg2= h5 8.c4 e6 9.b5 ab5 10.cb5 Na7 11.a4 Bb4? (better is 11...Nf6!?+=) 12.Bg7+– Rh7 13.Bd4 Bd2 (13...b6 14.Ngf3+–) 14.Qd2 b6 15.Nf3 Qd6 (15...Kb7 16.a5 Nb5 17.ab6 cb6 18.Qa2+–) 16.Qc2 Kd7 17.Ne5 Ke8 18.Rc1 c5 19.bc6 f6 20.Nd7 Nc6 21.Nf6 Kf7 22.Nh7 Nd4 23.Qc7 Rd7 24.Qd6 Rd6 25.Rc7 Ne7 26.Ng5 Kf6 27.Nf3 Nec6 28.Nd4 Nd4 29.Kd2 Bg4 30.f3 Bf5 31.e4 de4 32.fe4 Bg4 33.Rf1 Ke5 34.h3 Be2 35.Rf2 h4 36.Re2 Nb3 37.Ke3 Nc1 38.Rd2 Nb3 39.Rd1 Kf6 40.Rb1 Na5 41.Ra7 Nc6 42.Rb7 Ne5 43.Bf1 hg3 44.R7b6 Rd7 45.a5 g2 46.Bg2 Rd3 47.Ke2 Rg3 48.Rg1 1–0. golfx – tylko3x3, kurnik, 2012.

5.Nd2 Qd7 6.g3 0-0-0 7.Bg2 h6 8.c4+= e6 9.b5 ab5 10.cb5 Na7 11.a4 Bb4 (11...Nf6 12.Rc1+=) 12.Ngf3 (12.Bg7 Rh7 13.Bd4 b6+–) 12...Rh7 (12...Nf6 13.Rc1+/–) 13.Kf1 (13.Ne5 Qe7+/–) 13...Bd2 (13...Kb8 14.Ne5 Qe7 15.g4+=) 14.Qd2+/– Bg4?? (14...f6 15.Bd4 Kb8 16.b6 cb6 17.Bb6+/–) 15.Rc1 (15.Ne5 Be2 16.Ke2 Qe8+–) 15...Ne7?? (better is 15...f6+/–) 16.b6 (16.Ne5!? Qd6 17.Ng4 f6+–) 16...Nac6 17.bc7 Qc7 18.Nd4 Qd6? 19.Nc6?? Nc6+/– 20.a5 Kc7 21.e4 Ra8 Exerts pressure on the isolated pawn 22.f3 Bh5+= 23.f4 Ra5?? 24.Be5+– Qe5 25.fe5 Ra6 26.ed5 ed5 27.Bd5 Kd7 28.Bc6 bc6 29.d4 Rh8 30.Kg2 Rha8 31.Rc2 Bg6 32.Rhc1 Bc2 33.Rc2 g5 34.d5 c5 35.e6! fe6 36.de6 Ke7 37.Qd7 Kf6 38.Rf2 Kg6 39.Qf7# 1–0. golfx – tylko3x3, kurnik, 2012.

5.Nd2 e6 6.Ngf3 Nf6 7.g3 h6 8.Bg2 Bd6 9.0-0 Qd7 10.c4 0-0 (10...Be7 11.e4 de4 12.de4 Ne4 13.Ne4 Qd1 14.Rad1 Be4 15.Bg7+=) 11.c5 (better is 11.e4!? de4 12.de4 Ne4 13.Ne4 Be4 14.c5+/–) 11...Be7= 12.e4 de4 13.Ne4 Be4 14.de4 Qd1 15.Rad1 Ne4 16.Rd7 Rac8 17.Ne5 Ne5? (better is 17...Bf6 18.Be4 Be5 19.Bc6 Bb2 20.Bb7 Rcd8 21.Rc7 Ba3 22.Ba6 Bb4+/–) 18.Be5+– Nf6 19.Bb7 Nd7–+ 20.Bc8 Ne5 21.Ba6 Ra8 22.b5 c6 23.a4 Bc5 24.Rc1 Nd3 25.Rc3 cb5 26.ab5 Rd8 27.b6 Bf2 28.Kg2 Bb6 29.Rd3 Rd3 30.Bd3 f6 31.h4 Kf8 32.g4 Ke7 33.Kf3 Kd6 34.Ke4 Bf2 35.h5–/+ Kc5 36.Ba6 e5 37.Bc8 Kd6 38.Bf5 Ke7 39.Bg6 Ke6 40.Bh7 Ke7 41.Bg8 Bh4 42.Kf5. golfx – lucyna545, kurnik, 2011.

5.Nd2 e6 6.g3 Bd6?? (6...Nf6 7.Bg2=) 7.Bg2?? (better is 7.e4 Bg6 8.Bg7+–) 7...f6 8.Ngf3 Qe7 9.e4 de4 10.de4 Bg4 11.h3 Bf3 12.Bf3 0-0-0 13.0-0 Be5 14.Be5 Ne5 15.Qe2?? Nf3 16.Nf3+= e5 17.c4 Qe6 18.b5 a5 19.Kg2+= Ne7 20.c5 f5 21.ef5+/– Nf5 22.Qe5 Qe5 23.Ne5 Rhe8 24.f4 Rd2 25.Rf2+/– Rd5 26.Rc1 g6 27.b6+– c6 28.Rc4?? Ne3 29.Kf3 Nc4 30.Nc4–/+ Rc5 31.Nd6= Kd8?? 32.Nb7+– Kc8 33.Nc5 Rd8 34.Ke3 Re8 35.Ne4 Kb7 36.Rc2 Kb6 37.Rc5 Re4+/– 38.Ke4 Kc5 39.g4 White plans f5 39...Kc4?? 40.f5+– Kb3 41.f6 c5 42.f7 c4 43.f8Q c3 44.Kd3 c2 45.Kd2 Kb2 46.Qf6 Kb1 47.Qb6 Ka2 48.Kc2 Ka3 49.Qb3# (49.Qa5#) 1–0. golfx – tylko3x3, kurnik, 2012.

4.g3 e5

5.e3 Nf6 6.b5 ab5 7.Bb5 Bd6 8.Bc6 bc6 9.Nf3 Qe7 10.0-0? (better is 10.d4 e4 11.Ne5–/+) 10...Bg4–+ 11.Kg2?? (11.h3 Bh3 12.c4 Bf1 13.Qf1 e4–+) 11...Qe6 (better is 11...e4 12.d3 Bf3 13.Qf3 ef3 14.Kf3 0-0–+) 12.Qe1 Bh3 13.Kg1 Bf1 14.Qf1 0-0 15.d4 e4 16.Nh4 Nd7 17.Nc3 f5 18.Ne2 Rab8 19.Bc1 Rf7 20.Kg2?? c5 21.f3 c4 22.f4 Nb6 23.Ng1 Ra8 24.Nh3 h6 25.Qe2 Qe7 26.Qh5 Nd7 27.Nf5 Qf6 28.Nh4 Re8 29.g4 Re6 30.Qd5= c6 31.Qh5 g5 32.Nf5 Qg6? 33.Qg6+– Rg6 34.fg5 hg5 35.Nd6 Rd6 36.Ng5 Rg7 37.Ne4 Rg4 38.Ng3 Nf6 39.Kf3 Rg6 40.a4 Nd5? 41.a5 Rdf6 42.Ke2?? Nc3? 43.Kd2 Nd5 44.Ke1 Rh6 45.Nf1?? Rfg6?? 46.a6+– Nc7 47.a7 Rg2 48.a8Q Na8 49.Ra8 Kf7 50.Ng3 Rc2 51.Bd2 c3= 52.Ra7 Ke8 53.Ra8 Kd7 54.Ne4 cd2 55.Nd2?? Rh2–+ 56.Ra7 Kd6 57.Ne4 Kd5 58.Nf6 Ke6 59.Kd1 Rcg2 (59...Rcg2 60.d5 Kf6 61.Rf7 Kf7 62.dc6 Rh1#) 0–1. swislina – antonioag, kurnik, 2012.

5.Bg2 d4 6.d3 Bd7 7.c3 Nf6 (7...dc3 8.Nc3 Bd6 9.Nf3=) 8.cd4+= ed4 9.Nd2 Be7 10.Ngf3 Be6 11.Nb3 Will d4 fall? 11...Bb3 12.Qb3 0-0 (12...Qd6 13.Qc4 Rd8 14.Rc1+=) 13.0-0 (13.Qc4 Nd7 14.Nd4 Nd4 15.Bd4 c6+/–) 13...h6 (13...Qd6 14.Nh4 Rad8 15.Nf5+/–) 14.Rac1 (14.Qc4+/–) 14...a5? (better is 14...Qd7!?+/–) 15.b5+– Na7 16.Nd4 Rb8 17.Nf5 Re8 18.Ne7 Re7 19.Bf6 gf6 20.a4 (20.e3!? c6 21.bc6 bc6+–) 20...Re2 21.Bf3 Re7 22.Qb2 Qd6 23.Rcd1 Nc8 24.Qd2 Kg7 25.Bg2 b6 26.Qc2 Qd4 27.Rde1 Rd7 28.Rd1 Nd6 29.Bh3 Re7+= 30.Bg2 Rbe8 31.Be4 Ne4+= 32.de4 Qe4 33.Qe4 Re4 34.Rd7 Ra4–+ 35.Rc7 Rb4 36.Rb7 Rb5 37.Ra1 Re4 38.Kg2 a4 39.Ra7 Ra5 40.Rb7? b5–+ 41.Kf3 Rc4 42.Kg2 b4 43.h4 b3 44.Rb3 ab3 45.Ra5 Rb4 46.Ra1 b2 47.Rb1 f5 48.Kf3. diablo005 – nomet, kurnik, 2012.

5.Bg2 Bd6 6.e3 (6.Bd5!? Qd7 7.c4+=) 6...Nf6+= 7.Ne2 0-0 8.0-0 Be6 9.d3 Qd7 10.Nd2 Bh3 11.c4 Bg2 12.Kg2 Qg4 13.cd5 Ne7 (better is 13...Nd5!? 14.Nc3 Qd1 15.Rad1 Nc3 16.Bc3 Rad8=) 14.e4+/– Ng6 15.h3 Qg5 (better is 15...Qd7!?+/–) 16.Nf3+– Qh5 17.Nc3 (better is 17.Bc1+–) 17...Nf4?? (better is 17...Rfe8+/–) 18.gf4+– ef4 19.Kh2 Ng4 20.Kg2 Ne5?? 21.Rh1 Nf3 22.Qf3 Qg5 23.Kf1 Rfe8 24.Rg1 Qh6 25.Na4 f6 26.Nc5 Be5 27.Be5 fe5 28.Ne6 Re7 29.Ke2 c6 30.dc6 Qe6+= 31.cb7 Rb7 32.Rac1 Rd8 33.Rc3?? Qa2–+ 34.Kf1 Qa1 35.Kg2 Qc3 36.Kh2 g6 37.Rd1 Qd4 38.Qg4 Rc7 39.Qe6 Kg7 40.Qg4 Rc2 41.Qf3 Rf2 42.Qf2 Qf2 43.Kh1 Qg3 44.Rf1 f3 45.a4 Qg2# 0–1. diablo005 – jav8808, kurnik, 2012.

5.Bg2 Bd7 6.e3 (6.Bd5!? Nf6 7.Bg2+=) 6...Nf6+= 7.Ne2 Be7 8.d3 e4 (8...0-0 9.0-0=) 9.0-0 (9.de4 de4 10.Nd2 Bf5+=) 9...Bg4 10.Nd2 b5 (10...Qd6 11.de4 de4 12.Qe1+=) 11.Re1 (11.de4 0-0+–) 11...0-0 (11...ed3 12.cd3 a5 13.Qc2+=) 12.Qc1 (12.de4 Be6+/–) 12...Bd6 (12...a5 13.de4 ab4 14.ab4 Nb4 15.Ra8 Qa8 16.ed5 Nfd5 17.h3=) 13.Nd4 (better is 13.de4!? Ne4 14.Ne4 de4 15.Be4+/–) 13...Nd4= 14.Bd4 Qd7? (better is 14...Re8+=) 15.Bf6+– gf6 16.de4 de4 17.Ne4 Bh3?? 18.Nf6 (18.Nf6 Kg7 19.Qb2+–) 1–0. diablo005 – keydon, kurnik, 2012.

5.Bg2 Nf6 6.d3 Bf5 7.Nd2 Be7 8.c4 0-0 (better is 8...d4!?=) 9.cd5+= Nd5 10.Nb3 (10.e4!? Ndb4 11.ab4+/–) 10...Bg6 11.Nf3 f6 12.Nh4 Bf7 13.Nf5 Re8 14.Ne7 Re7 15.0-0 b6? (15...Ra7 16.Rc1=) 16.e3 (16.e4 Ndb4 17.ab4 Nb4+/–) 16...Qd7 (16...Re6 17.Rc1=) 17.Rc1 (17.e4 Ncb4 18.ab4 Nb4+/–) 17...Na7 18.Qe2 Nb5 19.Rfd1 Ne3? 20.Qe3 Bb3 21.Rd2?? Rd8 22.Bc6 Qd6 23.Be4 Bd5 24.Rcd1 Nd4 25.Bd4+= ed4 26.Qf3 Be4 27.de4 c5 28.bc5 bc5 29.Qb3 Kf8 30.Qc4 Qb6 31.Rd3 Re4–+ 32.Rc1 Rc8 33.Qd5 Qe6?? 34.Qh5?? Re1–+ 35.Re1 Qe1 36.Kg2 Kg8 37.Qd5 Kf8 38.Qd6?? Qe7–+ 39.Qd5? Rd8 40.Qf3 Re8 41.Rd1 Qe4 42.Qe4 Re4 43.h3 c4 44.h4 d3 45.f3 Re2 46.Kh3 d2 47.Kg4 c3 48.f4 Re1 49.Kf3 Rd1 (49...Rd1 50.Ke4 Re1 51.Kd5 d1Q 52.Kc6 Re6 53.Kc5 Qa4 54.h5 Rc6 55.Kd5 Qc4#) 0–1. diablo005 – urquelb, kurnik, 2012.

5.Bg2 Nf6 6.Nf3 Bd6 7.0-0 Be6 8.d3 h6 9.Nbd2 Qd7 10.c4 d4 11.c5 Be7 12.a4 0-0 13.b5 ab5 14.ab5 Nb4 15.Ra8 Ra8 16.Ne5 Qb5 17.Bd4 Ng4 18.Ng4 Bg4 19.Ne4 c6 20.Qd2 Bf5 21.Nc3 Qa5 22.Ne4 Be4 23.Be4 Bc5 24.Bc3 Qa2 25.Bb4 Bb4 26.Qb4 Re8 27.Qb7 c5 28.Bd5 Rf8 29.Ba2 1–0. rryy44 – asaltar30, kurnik, 2012.

5.Bg2 Nf6 6.Nf3 Bd6 7.d3 Be6 8.0-0 h6 9.Nc3 g5 10.b5 ab5 11.Nb5 g4 12.Nh4 Be7 13.e4 d4 14.Nf5 Rh7 15.Ne7 Qe7 16.a4 0-0-0 17.Ba3 Qd7 18.c4 dc3 19.Nc3 Nd4 20.Nb5 Nf3 21.Kh1 Kb8 22.Rc1 c6 23.Nd6 h5 24.Rb1 Qe8 25.Ne8 Re8 26.Bf3 gf3 27.Qf3 h4 28.Qf6 hg3 29.fg3 Rg8 30.Rb2 Rg3 31.Qe5 Ka8 32.Qg3 1–0. rryy44 – sqamosa, kurnik, 2012.

5.Bg2 Be6

6.Nc3 Nf6 7.b5 ab5 8.Nb5 Ra5 9.a4 Bd6 10.Bc3 Ra8 11.d3 0-0 12.Nf3 h6 13.0-0 d4 14.Bb2 Ne7 15.a5 Bb4 16.a6 ba6 17.Ne5 ab5 18.Ba8 Qd6 19.Nf3 Bc5 20.Nd2 c6 21.Ne4 Ne4 22.de4 Bh3 23.Re1 Nc8 24.e3 de3 25.Qd6 ef2 26.Kh1 fe1Q 27.Re1 Bd6 28.Bc6 b4 29.c4 Nb6 30.Bd5 Rc8 31.Rc1 Bg4 32.Kg2 Nd5 33.ed5 Bf5 34.Bd4 Be4 35.Kf2 Bd5 36.c5 Be7 37.Ke3 Bg5 0–1. rryy44 – victortm, kurnik, 2012.

6.e3 Bd6 7.Ne2 Nge7 8.d3 0-0 9.Nd2 f5 10.0-0 Qd7 11.Nf3 e4 12.de4 (12.Ng5!?=) 12...fe4+= 13.Ng5 Bf5 (13...Ne5 14.Ne6 Qe6 15.Nf4+=) 14.Nd4 (14.c4 dc4 15.Ne4 b5=) 14...Nd4 (better is 14...h6 15.Nf5 Qf5–/+) 15.Qd4+= Nc6? (better is 15...Rf6 16.f3 ef3 17.Bf3 c6+=) 16.Qd5+– Kh8 17.Ne4 Be4 18.Be4 Rf7?? (18...Rae8 19.Rad1+–) 19.Qd3 (better is 19.Qh5 h6 20.Qh6 Kg8 21.Qh7 Kf8 22.Qh8 Ke7 23.Qa8+–) 19...h6 20.Qe2 Raf8 21.Bd5 Rf5 22.e4 Rg5 23.Bc1?? Rg6?? 24.Qh5 Rgf6? 25.Bb2 Rf3 26.e5 Be7?? 27.Bf3 1–0. diablo005 – ednelsonam, kurnik, 2012.

6.Nf3 Bd6 7.0-0 f5 8.e3 Nf6 9.Nc3 0-0 10.b5 ab5 11.Nb5 f4 12.Nd6 Qd6 13.ef4 ef4 14.Qe2 Rae8 15.Qd3 Ne4 16.Nd4 Nd4 17.Qd4 c5 18.Qg7 1–0. chybol3 – tmks, kurnik, 2012.

6.Nf3 e4 7.Nd4 Nd4 8.Bd4 b6 9.e3 c5 10.bc5 bc5 11.Bc3 Nf6 12.0-0 Be7 13.d3 0-0 14.de4 Ne4 15.Bb2 Rb8 16.Qc1 Bf6 17.Bf6 Qf6 18.c3 Bf5 19.a4 Rfd8 20.a5 Rd6 21.f3 Ng5 22.e4 Bh3 23.f4 Bg2 24.e5 Qf5 25.ed6 Bf1 26.Qf1 Ne4 27.Qd3 c4 28.Qd4 Nd6 29.Nd2 Nb5 30.Qe5 Qe5 31.fe5 Nc3 32.Nf3 Rb1 33.Rb1 Nb1 34.Nd4 Kf8 35.Kf2 Ke7 36.Ke3 f6 37.ef6 gf6 38.g4 h6 39.h3 Na3 40.Nf5 Ke6 41.Nh6 Ke5 42.Nf7 Ke6 43.Nd8 Kd7 44.Nf7 Ke7 45.Nh6 Ke6 46.Kd4 Nc2 47.Kc3 Ne3 48.Kd4 Nc2 49.Kc3 Ne3 50.Kd2 d4 51.Nf5 c3 52.Kc1 Nf5 53.gf5 Kf5 54.Kc2 Ke4 55.h4 1–0. rryy44 – ihabz, kurnik, 2012.

6.Nf3 e4 7.Nd4 Nd4 8.Bd4 Nf6 9.0-0 c6 10.Nc3 Be7 11.Na4 0-0 12.Nb6 Rb8 13.Be5?? (13.f3 ef3 14.Bf3 Ne4+=) 13...Bd6?? (better is 13...Qb6 14.Bb8 Rb8–+) 14.Bd6 Qd6 15.Na4 Nd7 16.d3 f5 17.de4 fe4 18.Be4 Qe5 19.Bf3 Nf6 20.Nc5+= Bf7 21.e3 Bg6 22.Rc1 Rf7 23.c4 dc4 24.Bg2 Rbf8 25.Rc4+/– Bh5 26.Qd4 Qf5 27.f4?? Be2= 28.e4 Qc8 29.e5 Bc4 30.Qc4+/– Nd5 31.Bd5 cd5 32.Qd5 Rd8 33.Qe4 White prepares e6 33...b6 34.e6 Re7–/+ 35.Nb7? Rd2?? 36.Qe3?? Qc2 37.Rf2 Rf2 38.Qf2 Qf2 39.Kf2 Rb7 40.f5 Kf8 41.g4 Ke7 42.h4 h6 43.Kf3 Kf6 44.Kf4 White plans g5 44...Rc7 45.g5 hg5 46.hg5 Ke7 47.Ke5 Rc1 48.f6 gf6 49.gf6 Ke8 50.Kd6 Rd1 51.Kc7 Re1 52.Kd6 b5 53.f7 Kf8 54.Kd7 Rd1 55.Kc6 Ke7 56.Kb6 Rd6 57.Kc7 Re6 58.a4 ba4 59.Kb7 Kf7 60.Kc7 a3 (60...a3 61.b5 a2 62.Kb7 ab5 63.Kc7 a1Q 64.Kb7 b4 65.Kc8 Re7 66.Kd8 Qh8#) 0–1. rryy44 – obrad, kurnik, 2011.

3.a3 e5

4.Nc3 d5 5.e4 d4 6.Nd5 Be6 7.Qf3 (7.Bc4 Bd6=) 7...Qc8 (better 7...Nb8!? 8.Qh5 c6 (worse 8...Bd5 9.ed5 Qd5 10.Be2–/+) 9.Qe5 cd5 10.ed5 Qd5 11.Qd5 Bd5–/+) 8.Bc4= b5 9.Bb3 Bg4 (9...a5!?=) 10.Nc7+– Qc7 Theme: Deflection from g4 11.Qg4 g6 (11...Nf6 12.Qe2+=) 12.Nf3 h5 13.Qg5 (13.Qg3 h4 14.Qh3 Rh5+–) 13...Be7 14.Qg3 Qd8?? (14...h4 15.Qh3+–) 15.0-0 (15.Ne5 Ne5 16.Qe5 Nf6+–) 15...a5?? (15...h4 16.Qh3 Qc8 17.Bd5+–) 16.ba5 (16.Ne5!? Ne5 17.Qe5 Rh7+–) 16...Ra5? (16...h4 17.Qh3 Bf6 18.a4+–) 17.d3 (better 17.Ne5 Ne5 18.Qe5+–) 17...h4+– 18.Nh4?? (better 18.Qh3 Bc5 19.a4+–) 18...Bh4–/+ (18...Rh4?! 19.Bd5 Ra6 20.Bc6 Rc6 21.Qe5=+) 19.Qg4 Bf6 20.f4 Nh6 21.Qf3 ef4 22.Qf4 (22.Bd5 Ne7 23.Qf4 Nd5 24.ed5=+) 22...Ng8?? (better 22...Be5 23.Bf7 Kd7–+) 23.Rae1 g5 24.Qf2 (better 24.Qf5 Qd6 25.Qc8 Ke7 26.Bd5 Qh2 27.Kf2=) 24...Rh6?? (24...Qd6 25.h3 Ra7 26.Bd5=+) 25.h3?? (25.e5 Qc7 26.ef6 Kd8 27.g3 Rf6 28.Qe2+–) 25...Kf8 (25...Nge7 26.Qd2–/+) 26.Qf3 (better 26.e5 b4 27.ef6 ba3 28.Bc1 Rf6 29.Qe2+–) 26...Ne5 27.Qf2 g4 28.Qg3 (28.Bc1!? Rg6 29.hg4–/+) 28...Qe7 29.Re2 Bh4 (29...gh3 30.Bd4 Nf3 31.Rf3 Bd4 32.Kh1–+) 30.Qf4–/+ Bg5 (30...gh3!? 31.Bd4 h2 32.Kh1 Rf6–/+) 31.Qf5=+ Be3?? (31...Qc5 32.Bd5 Bf6–/+) 32.Kh1?? (better 32.Re3 Rd6 33.Rg3+–) 32...gh3?? (better 32...Rf6!? 33.Qc8 Kg7–/+) 33.gh3 (better 33.Re3!? de3 34.Be5+=) 33...Rf6= 34.Qc8 Qe8 35.Qc5 Kg7 (35...Qe7 36.Qc8 Qe8 37.Qc5 Qe7 38.Qc8=) 36.Rg2 (36.Rf6 Nf6 37.Re3 de3 A) worse 38.Qe5 Qe5 39.Be5 b4–/+ (worse 39...Ra3 40.Kg2+=); B) 38.Be5+–) 36...Kh7 (36...Ng6 37.Bd4 Bd4 38.Qd4 Qc8+=) 37.Bd4?? (37.Rf6 Nf6 38.Qb6=) 37…Rf1–+ (37...Rf1 38.Kh2 Nf3 39.Kg3 Qb8 40.Be5 Ne5 41.Qe3 Nc4 42.Kh4 Ne3 43.Rg4 Rf3 44.Bc4 Qd8 45.Rg5 Kh6 46.Bb5 Qg5) 0–1. WarlpiriMan – Chetter, ChessWorld.net, 2020.

4.Nc3 d5 5.e4 de4 6.Ne4= Bf5 (6...Be6 7.Nf3=) 7.d3 (7.Bd3 a5=) 7...Be7 (7...Nf6 8.Nf3 Ne4 9.de4 Be4 10.Qd8 Rd8 11.Ne5 Ne5 12.Be5=+) 8.Nf3= Nf6 (8...Qd5 9.Qe2=) 9.Qe2 (9.Ne5!? Ne5 10.Be5 Ne4 11.de4 Be4 12.Qg4+=) 9...Be4 (9...Bg4 10.Nf6 Bf6 11.Qe4 Bf3 12.Qf3=) 10.de4 Bd6 (10...Nd4 11.Nd4 ed4 12.e5=) 11.g3 (11.c4 Nb4 12.Rd1 Nc6+–) 11...0-0= 12.Bg2 (12.c4 Nb4 13.ab4 Bb4 14.Nd2 Ne4–/+) 12...Re8 (12...a5 13.b5 Nd4 14.Nd4 ed4 15.Qd3+= (worse 15.Bd4 Bb4 16.ab4 Qd4=)) 13.0-0 (13.Rd1 a5 14.b5 Nd4 15.Nd4 ed4 16.Rd4 Qe7+=) 13...Qe7 (13...Qd7 14.Rfd1+=) 14.c4+= b6 15.Rfc1 (15.Rfd1 Rad8+=) 15...Qe6 (15...a5 16.b5 Nd4 17.Nd4 ed4 18.Bd4+–) 16.Rd1 (better 16.c5 bc5 17.bc5=) 16...Ng4? (16...Qg4 17.h3 Qe4 18.Qe4 Ne4 19.Nh4 Nf2 20.Kf2+– (20.Bc6?! Nd1 21.Rd1 Rad8+–)) 17.h3 (17.Ng5!? Qc8 18.Bh3+–) 17...Nf6+= 18.Rac1 (18.Ng5 Qe7+=) 18...h5 (18...Red8 19.Ng5 Qe7 20.Qf3+=) 19.c5 (19.Ng5 Qe7+–) 19...bc5+= 20.bc5 Be7 21.Ng5 (21.Qc4 Qc4 22.Rc4 Bf8+=) 21...Qa2 (better 21...Qb3+=) 22.Rc3?? (22.Rc2 Qb3 23.Rd3 Qa4+–) 22...Rab8?? (better 22...Nd4 23.Rd4 ed4–/+) 23.Rd2 (23.Rc2 Bc5 24.Bc1 Bf2 25.Kf2+– (25.Qf2?! Qb3+–)) 23...Nd4=+ 24.Qc4 Rb2 (better 24...Qc4 25.Rc4 Nb3=+) 25.Qa2+– Ra2 26.Ra2 Nd7 (26...c6 27.f4 Nd7 28.Rd2+=) 27.Nf3 (27.c6 Nc5 28.Bf1 h4+–) 27...Bc5+= 28.Kf1 (28.Rd2 Bb6 29.Rc4 Bc5+=) 28...Nf3 (28...Rb8!? 29.Rc1 Nb3+=) 29.Bf3+– Bd4 (better 29...g6!?+–) 30.Rc7+– Nf6 31.Rac2 Bb6 (31...Re6 32.Rb7+–) 32.R7c6 Bd4 33.Ra6 g5 (33...Rd8+–) 34.Rf6 Rb8 (34...Kg7 35.Rf5 Kg6 36.a4+–) 35.Bh5 Rb1 (35...Rb7 36.Rf5+–) 36.Kg2 (better 36.Ke2 Rb7 37.Rf5+–) 36...Kg7 (36...Rb7+–) 37.Rf7 Kh6 38.Bg4 (38.Rc6 Kh5 39.Rh7) 38...Kg6 39.Be6 (39.Rcc7 Rg1 40.Kg1 Be3 41.Bf5 Kh5 42.Rh7) 39...Rb6 40.Bd5 Rd6 41.Rfc7 Bb6 (41...Ra6 42.R2c6 Rc6 43.Rc6 Kg7 44.h4 gh4 45.gh4+–) 42.R7c6 Rc6 43.Rc6 Kh5 44.Rb6 (44.Bf7) 44...g4 45.Bf7 Kg5 46.h4 1–0. Choong,Yita – Miranda,Adrian, AUS–ch U12 Sydney, 2002.

4.c4 d5 5.b5 Na5 A) worse is 6.Be5 Nc4 (6...dc4?! 7.Nc3+=) 7.Bd4 ab5–/+; B) 6.cd5 Nc4 7.Qc2 Nb2 8.e4=.

4.c4 d5 5.cd5 Qd5 6.Nc3 Qe6 7.g3 Nf6 8.Bh3 Qd6 9.Bc8 Rc8 10.e3 (10.Nf3 Be7=+) 10...Rd8 11.Qc2 Qd7 12.Rd1 Bd6 13.Ne4 (13.Nge2 Qh3=+) 13...Ne4–/+ 14.Qe4 Qe6 15.d4 (15.Nf3 Qa2 16.Bc1 0-0=+) 15...Qb3 (15...f5 16.Qc2 ed4 17.Ne2–/+) 16.Bc1 (16.Rd2!?=+) 16...0-0–/+ 17.d5 Ne7 18.Ne2 (18.Qd3 Qd3 19.Rd3 Nd5–/+) 18...c6 19.dc6?? (better 19.Qd3 Qd3 20.Rd3–+) 19...Bb4! 20.Kf1 (20.Qb4 Qd1 A double attack) 20...Rd1 21.Kg2 Rh1 22.Kh1 Nc6 (22...Bd6 23.Qf3 f5 24.Kg2–+) 23.ab4 Qd1 24.Kg2 (24.Ng1 Qc1 25.Kg2 b5–+) 24...Qe2 25.Ba3 Rd8 26.Qf5 Qa2 27.b5 (27.Bc1 g6 28.Qg5 Qd5 29.e4 Qe4 30.Kh3 Qb4–+) 27...ab5 28.Bc1 Qd5 (better 28...b4 29.e4 b3 30.Qg4–+) 29.e4 Qd7 30.Qg5 (30.Qd7 Rd7 31.Kf3 b4–+) 30...h6 31.Qh4 Qd1 32.Be3 (32.Bh6 gh6 33.Qh6 Rd6–+) 32…b4 (32...b4 33.Bh6 f6–+) 0–1. petrobbo (2075) – Mako7 (2290), ChessWorld.net, 2013.

4.c4 d5 5.cd5 Qd5 6.d3=.

4.c4 f6 5.e4 b5 6.cb5 ab5 7.Bb5 Nd4 8.Bd4 (8.Bc4!? Ba6 9.Ba6 Ra6+–) 8...ed4+– 9.Bc4 Nh6 (9...Bb7 10.Nf3 Bd6 11.0-0+– (worse 11.Nd4 Be5=+)) 10.Qh5 Nf7?? (better 10...g6 11.Qd5 Ra7 12.Qd4 c5 13.bc5 Rc7+–) 11.Qf7 1–0. DEFFM – GuestWNTZ, freechess.org, 2019.

4.d3 Be7 5.Nd2 A) 5...d6 6.Ngf3 (6.g3 Nf6 7.Bg2 0-0 8.Ngf3 Be6 9.0-0 h6 10.Nc4 Qd7 11.Qd2; 6.e4 Nf6 7.Be2 0-0 8.Ngf3 Be6 9.0-0 b5 10.c4 Qb8 11.Rc1) 6...Nf6 7.g3 0-0 8.Bg2 h6 9.Nc4 Be6 10.0-0 Qd7 11.Qd2; B) 5...d5 6.c4 Nf6 7.Ngf3 0-0 8.Ne5 Ne5 9.Be5 Re8 10.Rc1 Bf5 11.Qb3; C) 5...Nh6 6.Ngf3 f6 7.e4 d5 8.Be2 0-0 9.0-0 Be6 10.d4 ed4 11.Nd4; D) 5...h6 6.e4 (6.Ngf3 d6 7.d4 Nd4 8.Nd4 ed4 9.Bd4 Nf6 10.e3 0-0 11.Bd3; 6.g3 d6 7.Ngf3 Be6 8.Nc4 Qd7 9.Bg2 Nf6 10.0-0 0-0 11.Qd2; 6.Nc4 d6 7.Nf3 Nf6 8.g3 Be6 9.Bg2 Qd7 10.0-0 0-0 11.Qd2) 6...Nf6 7.Ngf3 d6 8.Be2 Be6 9.0-0 0-0 10.c4 Qd7 11.h3; E) 5...Nf6 6.Ngf3 d6 7.g3 0-0 8.Bg2 h6 9.Nc4 Be6 10.0-0 Qd7 11.Qd2.

4.d3 Be7 5.Nf3 d6 6.e4 (6.g3 Nf6 7.Bg2 0-0 8.0-0 Be6 9.c4 h6 10.Nc3 Qd7 11.Rc1; 6.Nbd2 h6 7.g3 Be6 8.Nc4 Nf6 9.Bg2 Qd7 10.0-0 0-0 11.Qd2) 6...Nf6 7.Be2 0-0 8.0-0 Be6 9.Nbd2 h6 10.c4 Qd7 11.d4.

4.d3 g6 5.Nf3 Bg7 6.g3 Nge7 7.Nc3 d6 8.Bg2 0-0 9.0-0 d5 10.Qd2 Bg4 11.h3 Be6 12.Ng5 Qd7 13.Ne6 Qe6 14.Rfe1 b5 15.a4 Nb4 16.ab5 ab5 17.Nb5 Ra1 18.Ra1 c5 19.c3 Nbc6 20.Qe3 d4 21.Qc1 Rb8 22.c4 Nb4 23.Ba3 Nec6 24.Qd2 Qd7 25.Bc6 Qc6 (25...Nc6!? 26.Bc5 Qh3=) 26.Bb4+= cb4 27.Qb4 Bf8 28.Qd2 e4? (better is 28...Bc5+=) 29.Qf4+– Ra8 30.Ra8 Qa8 31.Qe4 Qa1? (31...Qe4 32.de4 Bc5+–) 32.Kg2 Qe1 33.Nd4 Bc5 (33...Qa5+–) 34.Qe8 Kg7 (34...Bf8 35.Nc6 Qa1 36.Ne5+–) 35.Qe5 (35.Qe5 Kg8 36.Qc5+–) 1–0. Janek – Stephen, internet, 2016.

4.d4 ed4 5.Bd4 (5.Nf3 d5=) 5...Nd4+= 6.Qd4 Nf6 7.e3 d5 8.c4 Be7 9.Nf3 0-0 10.Bd3 (10.Bd3 dc4 11.Bc4+=). tomassic (1915) – ironbutterfly (2160), net–chess.com, 2007.

4.d4 Nd4 5.Bd4 ed4 6.Nf3 +=.

4.e3 d5 (--> 1.b4 d5 2.Bb2 a6 3.e3 Nc6 4.a3 e5).

4.e3 f5 5.c4 d6 6.Bc3 (6.d4 ed4 7.ed4 d5+=) 6...Nf6 7.f3 (7.d4 ed4 8.ed4 d5=) 7...Be6 8.h4? (8.d4 ed4 9.ed4 d5=) 8...h6 (8...Nh5 9.b5 Nb8 10.ba6 Na6 11.f4–+) 9.b5 (9.d4 ed4 10.ed4 d5=+) 9...ab5–/+ 10.cb5 Na5 11.Ba5 Ra5 12.a4 (12.Qc2 Ra8–/+) 12...c6 (12...d5 13.Ne2–/+) 13.d4 (13.bc6 bc6 14.Qc2 Qa8–/+) 13...Be7 14.g3 ed4 (14...ed4 15.ed4 Nh5–+) 0–1. Delboy Smith (1745) – theredflash06 (1910), ChessWorld.net, 2015.

4.e3 f5 5.Nf3 Nf6 6.Ne5+– Bd6 (6...Ne5 7.Be5 d6 8.Bb2+–) 7.Nc6 (7.Nf3 Be7+–) 7...dc6 8.Be2 0-0 9.0-0 (better 9.c4+–) 9...h5? (better 9...a5!?+=) 10.f4 (10.Bc4 Kh7+–) 10...Ng4 (10...Be6 11.Bh5 a5 12.ba5 Nh5 13.Qh5+–) 11.h3 Nf6 12.c4 (better 12.Bc4 Kh7 13.Bf6 Rf6 14.Qh5 Rh6 15.Qf3+–) 12...Ne4?? (better 12...h4+–) 13.c5 (13.Bh5?! Ng3 14.Re1 Nh5 15.Qh5 c5 16.bc5 Bc5+–) 13...Ng3 14.cd6 (better 14.Bc4 Kh7 15.cd6 cd6+–) 14...Nf1 (14...cd6 15.Re1+–) 15.dc7 (better 15.Bc4!? Rf7 16.Bf7 Kf7 17.dc7 Qc7 18.Qh5 Kg8 19.Qe8 Kh7 20.Kf1 a5+–) 15...Qc7 16.Qf1 (better 16.Bc4!? Rf7 17.Qh5 Ne3 18.de3 Qe7+–) 16...Be6 17.Nc3 (17.Bh5!? Qe7+–) 17...Rad8 18.Bc4 (18.d3 h4+–) 18...Bc4 19.Qc4 Kh8 (19...Qf7 20.Qe2+–) 20.d4 (20.Qe2 h4+–) 20...Qe7 21.Re1 b6 (21...Rfe8+–) 22.Qc6 Rc8 (22...Qh4 23.Re2 Rb8 24.d5+–) 23.Qb6 Rcd8 (23...Qh4 24.Rd1 Rf6 25.Qb7+–) 24.Qa6 Rd4 25.Qe2 Rdd8 26.Qh5 Kg8 27.Nd1 (27.Qg5 Qg5 28.fg5 Rd3+–) 27...Rde8 (27...Rd2 28.Bc3 Rd3 29.a4+–) 28.Be5 (28.g4 fg4 29.Qg4 Rd8+–) 28...Qe6 (28...Ra8 29.Qg6 Ra3 30.Nc3+–) 29.Nf2 g6 (29...Ra8 30.Qg5 Rf7+–) 30.Qh8 Kf7 31.Qh7 (31.Qg7) 1–0. BeepBeepImAJeep (2555) – m_erdeniz (1730), lichess.org, 2018.

4.e3 f5 5.Qh5 g6 6.Qf3 Nf6 7.Bc4 (7.Nc3 d5=) 7...e4 8.Qe2 d5 (8...Bg7 9.Nh3=) 9.Bb3 (9.Bd5 Qd5 10.Bf6 Rg8+=) 9...Bd6 (9...Bg7 10.Nh3=) 10.Nh3 (10.Bd5 Ne5 11.Bb3 a5+=) 10...0-0 (10...Be6 11.Ng5 Bg8 12.0-0=) 11.Ng5 (11.Bf6!? Qf6 12.Bd5 Kg7 13.Nc3+=) 11...h6 12.Nh3 Kh7 (12...a5 13.b5 Ne7 14.Nc3=) 13.0-0 Nh5 Black prepares f4 (13...g5 14.Ra2=+) 14.f3 f4 (14...Be6 15.Nc3=) 15.Nf4 (15.fe4 de4 16.Nf4 Nf4 17.ef4 Bf4+=) 15...Nf4 (15...Bf4!? 16.ef4 Nf4=+) 16.ef4+= Rf4 (16...ef3 A) worse 17.Rf3 Bg4=+ (17...Bf4? 18.Qf2 g5 19.g3+–); B) 17.Qf3 d4 18.g3+=) 17.Bd5+– Bf5? (17...Bc5!? 18.bc5 Qd5+–) 18.Be4 (18.fe4!? Bd7+–) 18...Be4 19.fe4 Qg5 (19...Rf1 20.Qf1 Qe7 21.Qe1+–) 20.Nc3 Rh4 (better 20...Be5 21.Rf4 Qf4+–) 21.h3?? (better 21.g3!? Be5 22.Rf7 Kh8 23.Raf1+–) 21...Qg3 (21...Rh3 22.Rf7 Kg8 23.Rf6 Bh2 24.Kh1–+) 22.Rf7 (better 22.Rf3!? Qh2 23.Kf1+–) 22...Kg8+= 23.Raf1?? (better 23.Rf3 Qh2 24.Kf2=) 23...Qh2–+ 24.Kf2 Qg3?? (better 24...Kf7 25.Nd5 Ke6–+) 25.Kg1= Rh3 (better 25...Qh2 26.Kf2 Kf7–+) 26.R7f3?? (better 26.Rf8! Bf8 27.Qc4 Kh7 28.Rf7 Bg7 29.Rg7 Kg7 30.Ne2 Kf8 31.Ng3 Rg3 32.Qf1 Ke8 33.Qf4+–) 26...Qh2 (26...Rh1! 27.Kh1 Qh2) 27.Kf2–+ Bg3 (better 27...Rf3 28.Qf3 Rf8 29.Qf8 Kf8–+) 28.Rg3–/+ Qg3 (28...Rg3 29.Qc4 Kf8 30.Ke1 Ke8 31.Qf7 Kd8 32.Nd5 Re3 33.de3 Qg3 34.Kd1+–) 29.Kg1 Qh2 30.Kf2 Qg3 31.Kg1 Rh5?? (31...Ne5 32.Nd5 Qh2 33.Kf2=+) 32.Nd5 (32.Qc4 Kh8 33.Ne2 Qe5 34.Be5 Re5+–) 32...Ne5?? (better 32...Qh2 33.Kf2 Qh4 34.Kg1 Qh1 35.Kf2 Qh4 36.Kg1 Qh2 37.Kf2 Qh4=) 33.Be5 (better 33.Nf6 Kh8 34.Nh5+–) 33...Qe5 (33...Re5 34.Qc4 Kh8 35.Qc7 Rg5 36.Qg3 Rg3+–) 34.Nf4?? (better 34.Nf6 Kg7 35.Nh5 gh5 36.Qc4+–) 34...Qd4= 35.Qe3 (35.Rf2!? Re5 36.d3=) 35...Qe3–/+ 36.de3 Re5 37.Ng6 Re4 38.Rf3 (38.Kf2–/+) 38...Kg7 (better 38...Rae8!? 39.Kf2 Rc4–+) 39.Nf4–/+ Rae8 (39...Rd8 40.Nh5 Kg6 41.Nf4 Kh7 42.Nd3–/+) 40.Kf2? (40.Nh5 Kg6 41.Nf6 Re3 42.Ne8 Re8=) 40...Kf6 (better 40...Rc4!? 41.Nh5 Kg6 42.Nf4 Kh7–/+) 41.Nh5 Kg5 (better 41...Kg6 42.Nf6 Re3 43.Re3 Re3 44.Ke3 Kf6=) 42.Ng3?? (42.Nf6 Re3 43.Nh7 Kg6 44.Re3 Re3 45.Ke3 Kh7 46.c4+=) 42...h5?? (better 42...Rc4–+) 43.Ne4+– Re4 44.Rg3 Rg4? (better 44...Kf6 45.Ke2 c5+–) 45.Rh3?? (better 45.Kf3 Rg3 46.Kg3+–) 45...h4 (better 45...Rc4=) 46.Kf3 1–0. Akrapovik – VolodyaOT, lichess.org, 2018.

4.e3 f6 5.Nc3 Nge7 6.g3 Ng6 (6...d5 7.Bg2=) 7.f4 (7.Bg2=) 7...Bd6 (7...d5 8.Bg2 Be6 9.Nge2=) 8.fe5 (8.f5!? Nge7 9.Qh5 Kf8 10.Nf3+=) 8...Nge5= 9.Nf3 b6 (9...0-0 10.Bg2+=) 10.Ne5+= Be5 11.d4 Bb7? (better 11...Bd6+=) 12.de5+– Ne5 13.Bc4?? (better 13.Nd5 0-0 14.Be2+–) 13...Bh1 (13...Nc4 14.Qg4 Nb2 15.Qg7–+) 14.Qh5 g6 15.Qh6 (15.Qe2 a5–+) 15...Qe7 (better 15...Nc4 16.0-0-0 Bf3 17.Rf1–+) 16.Nd5 (16.Be2 a5 17.0-0-0 ab4 18.Nb5–+) 16...0-0-0 (better 16...Bd5 17.Bd5 Ng4–+) 17.Ne7 (17.Ba6 Kb8 18.Ne7 d6+–) 17...Kb7 18.Qh7 (better 18.Be5 fe5 19.Qg7+–) 18...Rh7–+ 19.Ng6?? (better 19.Be5 fe5 20.Ng6 Rh2 21.Ne5–+) 19...Ng6 (better 19...Nc4 20.Bf6 Re8–+) 20.Bd5 (20.Bd3 Rh2 21.Bg6 Bf3–+) 20...c6 (20...Bd5 21.0-0-0 Kc6 22.a4–+) 21.Bf7?? (better 21.Bh1 Rh2 22.Be4–+) 21...Ne5 (21...Rf7 22.0-0-0 Bd5 23.Rf1–+) 22.Bg6 (22.Bb3 Rh2 23.0-0-0 d5–+) 22...Ng6 23.Bf6 (23.h4 f5–+) 23...Rf8 24.0-0-0 (24.Bh4 Nh4 25.gh4 Be4–+) 24...Rf6 (better 24...Bf3 25.Rd6 Kc7 26.Rd4 Rf6 27.Rd2–+) 25.Rh1 Ne5 26.Rd1 (26.h4 Rf3–+) 26...Rhf7 (26...Rh2 27.Kb1–+) 27.g4 (27.a4 d5–+) 27...Nf3 (better 27...Ng4!? 28.e4–+) 28.h3 (28.Rh1 Rh6 29.h3 Rfh7–+) 28...Ne5 (28...Rh6 29.Rh1–+) 29.g5 Rf1 (29...Rg6 30.h4–+) 30.Rf1 (30.a4 Rd1 31.Kd1 Rh7–+) 30...Rf1 31.Kd2 Ng6 (31...Rh1 32.Ke2–+) 32.Ke2 (32.Kd3 Rg1–+) 32...Rh1 33.h4 (33.Kf3 Rh3 34.Ke4 Nf8–+) 33...Rh4 34.Kf3 (34.Kd2 Ne5–+) 34...Rh1 (34...Ne5 35.Ke2–+) 35.Kg3 (35.Kg4 Rg1 36.Kf5 Ne7 37.Ke5 Nd5–+) 35...Rg1 36.Kf3 Rg5 37.e4 Ne5 38.Kf4 Rg4 (better 38...Rh5 39.c3–+) 39.Ke5 d6! 40.Ke6 (40.Kd6 Re4 Deflection) 40...d5 (better 40...Re4 41.Kd6 Rd4 42.Ke5 Rc4–+) 41.Kd6 (41.ed5 Re4 42.Kd6–+) 41...de4 42.Ke7 e3 (42...e3 43.Kd7 e2 44.b5 e1Q 45.ba6 Ka6 46.Kc6 Qe6 47.Kc7 Rg7 48.Kd8 Qd7) 0–1. Agiant – conscious_mind, lichess.org, 2019.

4.e3 g6 5.b5 ab5 6.Bb5 Na7 (6...Bg7 7.f4=) 7.Bc4 (7.Be2 Nc6=) 7...Bg7 (7...d5 8.Be2 f6 9.d4 ed4 10.Bd4=) 8.Ba2 (8.Qf3 Nh6=) 8...d6 (8...d5=) 9.g4 (9.f4 Qh4 10.g3 Qe7=) 9...Nf6 (9...h5 10.gh5 Rh5 11.d4–/+) 10.g5=+ Ne4 (10...Nd7 11.f4=+) 11.h4 (11.f4 0-0–/+) 11...Qe7 (11...h6 12.Qf3 f5 13.gf6 Nf6 14.Qg2=+) 12.f4 (12.d3 Nc5=+) 12...Be6 (12...f5 13.Nc3 Nc3 14.Bc3–/+) 13.Qf3 (13.Be6 fe6 14.fe5 0-0= (< 14...Be5 15.Be5 de5 16.Qg4=)) 13...Ba2 (13...Nc5 14.fe5 Ba2 15.ed6 Bb2 16.Ra2=+) 14.Qe4= Bb1 15.Rb1 0-0-0 (15...Nc6 16.h5=) 16.f5 (16.h5 f5 17.gf6 Bf6 18.fe5 Qe6+/–) 16...f6 (16...gf5 17.Qf5 Qe6 18.Qe6 fe6 19.h5+=) 17.fg6 hg6 18.Nf3 (18.gf6!? Bf6 19.h5+=) 18...f5= 19.Qd5 (19.Qa4 Kb8=) 19...Nc6 (19...c6 20.Qa5 Nb5 21.c4=) 20.Qb5 Qd7? (20...Rdf8!?=) 21.Bd4 (better is 21.Be5 Qe7 22.Bg7 Qg7 23.Kd1+–) 21...b6?? (better is 21...Nb4! 22.Qb4 Qc6+/–) 22.Qa6 Kb8 23.Bb6! cb6 24.Rb6 Qb7 25.Qb7 1–0. bentengutama (1845) – vslijepcevic (1840), net–chess.com, 2003.

4.e3 g6 5.d4 Bg7 6.b5 (6.d5 Nce7=) 6...ab5 7.Bb5 Nge7 8.d5 Na7 9.Bc4 (9.Be2 d6=) 9...d6 (9...b5 10.Be2=) 10.f4 (10.Nc3 0-0=) 10...0-0 (10...b5 11.Be2=+) 11.fe5 (11.Nf3 Nf5 12.Qc1 ef4 13.Bg7 Kg7 14.ef4 Qf6–/+) 11...Be5 (better is 11...c6 12.dc6 Nec6=) 12.c3? (better is 12.Be5 de5 13.e4=+) 12...Nf5–+ 13.Nf3 (13.Bd3 Qh4 14.Kd2 Ne3–+) 13...Ne3 14.Qe2 (14.Qb3 Ng2 15.Kf2 Nh4–+) 14...Re8 (14...Nc4?! 15.Qc4 b5 16.Qb3–+) 15.Ne5?? (better is 15.Kf2 Bg7 16.Kg1–+) 15...Re5 (< 15...Nc4 16.Qc4 Re5 17.Kd1–+) 16.Kd2 Qg5 17.Bd3 (17.Bc1 Nc4 18.Kd1 Qc1 19.Kc1 Re2–+) 17...Ng2 18.Kc2 Re2 19.Be2 Qd5 20.Bc1 Ne3! 21.Be3 Qh1 22.Ra2 Bf5 23.Kb3 Qb1 24.Rb2 Qe4 (better is 24...Bc2 25.Kc4 b5 26.Kd4 Nc6 27.Kd5 Be4) 25.Bg1 Qd5 26.Bc4 Qc6 27.Re2 Be6! 28.Be6 fe6 29.c4 e5 30.Rc2 Qf3 31.Kb2 Nc6 32.Rf2 Qa3 33.Kc2 Nd4 34.Kd2 Qb2 35.Ke3 Nf5 36.Ke4 Qb1 37.Kd5 Qg1 38.Rd2 Re8 39.c5 Qc5 40.Ke4 Qe3 41.Kd5 Qd2 42.Ke4 c6 43.Kf3 d5 44.h4 Qe3 45.Kg2 Nh4 46.Kh2 Rf8 47.Kh1 Qh3 48.Kg1 Rf1 0–1. bentengutama (1845) – vslijepcevic (1840), net–chess.com, 2003.

4.e3 g6 5.Nf3 Bg7 6.b5 ab5 7.Bb5 Na7 (better is 7...Nge7=) 8.Ne5 (better is 8.Ba4+=) 8...f6–/+ 9.Ng6 (better is 9.Bd7 Bd7 10.Nd7 Qd7 11.0-0–/+) 9...Nb5?? (better is 9...hg6 10.Bd3 Ne7–/+) 10.Nh8+– Bh8 11.Qh5 Kf8 12.Qb5 c6 13.Qh5 d6 14.g4 h6 15.g5! Qe8 16.Qe8 Ke8 17.h4 Bf5 18.d3 h5 19.Nd2 Kf7 20.Nc4 Ke6 21.f4 b5 22.e4 bc4 23.ef5 Kf5 24.dc4 Ne7 25.Rd1 d5 26.cd5 Nd5 27.gf6 Bf6 28.Bf6 Nf6 29.Ra1 Kf4 30.a4 Nd5 31.Rg1 Ne3 32.Ra2 Re8 33.Kd2 Nc4 34.Kc3 Nd6 35.Kb4 Nb7 36.c4 Re4 37.Rg5 Nd6 38.Rc2 Re5 39.Rf2 Ke3 40.Re5 (40.Re5 Kf2 41.Kc5 Nc4 42.Kc4+–) 1–0. bentengutama (1845) – vslijepcevic (1830), net–chess.com, 2003.

4.e3 h6 5.Ne2 Nf6 6.Ng3 (6.d4 d6=) 6...Bd6 (6...d5!?=) 7.Be2+= 0-0 8.0-0 Ne7 (8...Be7 9.c4+=) 9.f4 (9.c4 Ng6+=) 9...ef4= 10.ef4 Ng6 11.Qe1 (11.f5!? Nf4 12.Bf3=) 11...Bf4=+ 12.Bf6? (12.Bd3 Bg5 13.Bg6 fg6 14.Qe2=+) 12...gf6?? (better 12...Qf6 13.c3 Re8–+) 13.Nh5= Bg5 14.Nc3 Attacking the isolated pawn on f6 14...d6 (14...d5 15.Qf2 Re8 16.Rae1=) 15.Ne4 Increasing the pressure on the isolated pawn on f6 15...Nf4?? (15...f5 16.Ng5 hg5 17.Qf2=) 16.Nhf6 (better 16.Nf4 Re8 17.Nc3+–) 16...Bf6= 17.Qg3 Ng6?? (better 17...Bg7 18.Rf4 Kh8=) 18.Nf6+– (18.Rf6?! Qe7 19.Bc4 Qe4 20.Rg6 Kh7 21.Rg7 Kh8+–) 18...Kg7 19.Nh5 (19.Bd3!? Qe7 20.Nh5 Kh7+–) 19...Kh7 20.Nf6 Kg7 21.Bh5 (21.Bd3 Qe7 22.Nh5 Kh7+–) 21...c6 (21...Be6 22.Rae1 Ba2+–) 22.Rae1 Qb6 (22...Bd7+–) 23.Kh1 Be6 (23...Qb5 24.Bg6 Qg5 25.Qd6 Bf5 26.Bf5 Qf6 27.Qf6 Kf6 28.Bc8 Kg7 29.Bb7 Rad8+–) 24.Bg6 fg6 25.Re6 Qd4 26.Nh5 (26.Ne8 Rae8 27.Qg6 Kh8 28.Qh6 Kg8 29.Rg6 Qg7 30.Rg7) 26...Kh7 (26...Kh8 27.Rg1 Rae8 28.Rd6+–) 27.Re7 (27.Qg6 Kh8 28.Qh6 Kg8 29.Qg5 Kh7 30.Rh6) 27...Kh8+– 28.Rf8 (better 28.Rfe1 Rg8 29.R7e6+–) 28...Rf8 29.h3?? (29.Qe1 gh5 30.Rb7 h4+–) 29...gh5 (29...Rf1 30.Kh2 Qg1) 30.Qg6?? (better 30.Kh2+–) 30...Rf1–+ 31.Kh2 Qf4 32.Qg3 Rh1!! (32...Rh1 33.Kh1 Qg3–+) 0–1. Akrapovik – iperfra, lichess.org, 2019.

4.e3 h6 5.Nf3 Be7 (better 5...d6!?=) 6.Ne5+– Ne5 7.Be5 f6 (7...Nf6!?+–) 8.Bb2 d5 9.Qh5 Kf8 10.c4 (10.Be2 f5+–) 10...dc4 (10...Be6 11.c5+–) 11.Bc4+– Qe8 12.Qe2 Bd7 13.0-0 b5 14.Bb3 Qg6 15.Bd5 Re8 16.f4 Bg4 17.Qf2 f5 18.Qg3 (18.Rc1 Bd6+–) 18...Nf6 19.h3 (19.Bb7 Rb8 20.Bf3 Kf7+–) 19...Nh5? (better 19...Nd5!? 20.hg4 Rd8+=) 20.Qh2+– Be2 21.Rf2 (21.Rc1 Rd8 22.Nc3 Bd3+–) 21...Bd3 22.g4?? (22.Nc3 Rd8 23.Bb3 Bh4+=) 22...Bh4?? (better 22...fg4 23.f5 Bf5–/+) 23.Rg2+– Nf6 24.gf5 (24.Bb7!?+–) 24...Qf5= 25.Bc6?? (better 25.Ba2=) 25...Rd8 0–1. GuestKGMW – GuestSDJC, freechess.org, 2017.

4.e4 b5 5.Nf3 Bd6 6.Be2 Bb7 7.0-0 Nf6 8.d3 0-0 9.Nbd2 Ng4 10.h3 Nh6 11.c4 bc4 12.Nc4 Qe7 13.Nd6 (13.Re1 Rfe8+=) 13...Qd6 14.Qc2 Rac8 (14...Rfe8 15.Rad1+=) 15.Rac1 Nd4? (better is 15...Rfe8+=) 16.Nd4+– ed4 17.Bf3 (17.Qc4 Rfe8+–) 17...Bc6 18.Qc4 Bb5 19.Qb3 (19.Qd4 Qd4 20.Bd4 Bd3+/–) 19...Kh8 (better is 19...Qe6!? 20.Qe6 fe6 21.Bd4 Bd3+/–) 20.a4+– Bc6 21.Rc4 (21.b5 ab5 22.ab5 Bb7+–) 21...Qf4 (21...Qg6 22.Bd4 f5 23.ef5 Nf5 24.Bc6 Nd4 25.Rd4 Qc6 26.b5+–) 22.Bd4 f6 (22...Rg8 23.Re1+–) 23.Be3 Qe5 24.d4 Qe8 25.d5 Bb7 26.b5 (26.Rfc1 c6+–) 26...a5 (26...Nf7 27.Rfc1 f5+–) 27.Rfc1 Rf7 (27...c6 28.Bh6 gh6 29.bc6+–) 28.Rc7 (better is 28.Bh6 gh6 29.Bh5 d6+–) 28...Rc7 29.Rc7 d6 30.b6 Qb8 (30...Ng8 31.Qb5 Qf8 32.Bf4 Rc7 33.bc7+–) 31.Qc3 Rc7 (31...Qf8 32.Bh6 gh6 33.Qa5+–) 32.bc7 Qc8 (32...Qf8 33.Bh6 gh6 34.Bg4+–) 33.Qa5 (33...Nf7 34.Bg4+–; 33.Bh6 Qe8+–) 1–0. alaamattar (2100) – pwillows (2085), net–chess.com, 2005.

4.e4 d5 5.ed5 Qd5 6.Qf3 (6.Nc3 Qe6 7.Nf3 Be7=) 6...Be6 (6...Qe6 7.Nc3–/+) 7.Nc3 (7.Qd5 Bd5 8.Nc3 Be6=) 7...Qf3 (7...Qd7!?+=) 8.Nf3= f6 9.0-0-0 1–0. smoothoperator (2255) – pushtiu (2245), net–chess.com, 2015.

4.e4 d6 5.Nc3 Nf6 6.d3 Bg4 7.Be2= h5 (7...Be6 8.Nf3 Be7 9.0-0 Qd7 10.d4 ed4 11.Nd4+= 0.31) 8.Nf3 Be7 (8...Qd7 9.h3 Bf3 10.Bf3 Nd4 11.Nd5= 0.09) 9.h3 (9.0-0 Qd7 10.Nd5 0-0 11.c4+= 0.50) 9...Bf3 10.Bf3 Nd4 11.0-0 (11.Nd5= 0.19) 11...Nf3 12.Qf3 g5 13.Qf5 g4 (13...Qd7 14.Qd7 Kd7 15.Rad1=) 14.hg4 (14.f4 gh3 15.gh3 Rg8 16.Kh1 Qc8 17.fe5 Qf5 18.Rf5 de5+–) 14...Ng4 (14...hg4!? 15.Nd5 Nd5 16.ed5 Qc8 17.Qc8 Rc8=) 15.Nd5 Bh4? (15...c6 16.Ne3=) 16.g3?? (16.f4 c6 17.fe5 Nh6 18.Qh5 cd5+–) 16...Bg5?? (16...c6 17.Nf4= (17.gh4? Qh4 18.Kg2 cd5–+)) 17.Bc1?? Bc1+= 18.Rac1 Qd7? 19.Nf6?? Nf6= 20.Qf6 Rg8 21.Kg2 Qg4 22.Rh1 Qg5 23.Qg5 Rg5 24.Rh4 f5 25.Rch1+/– fe4 26.de4 Kd7 27.Rh5 The passed pawn on g3 will quickly become a dangerous weapon 27...Rh5 28.Rh5 Kc6 29.g4 a5 30.g5 ab4 31.ab4 Kb5 32.c3 Kc4 33.Rh3 c5 34.bc5 Kc5 35.g6+– b5 36.g7 Rg8 37.Rg3 d5 38.ed5 Kd5 39.Kf1 Ke4 40.Ke2 Kd5 41.Ke3 Kd6 42.Rg6 Kd5 43.f3 Kc4 44.Rc6 Kd5 45.Rc7 Kd6 46.Rb7 Kc6 47.Rf7 Kd5 48.Kd3 Ke6 49.Rb7 Kd6 50.Ke4 Ke6 51.Rb5 Rg7 52.Re5 Kd6 53.f4 Rg1 54.c4 Rc1 55.Rd5 Ke6 56.Re5 Kd6 57.c5 Rc5 58.Rc5 Kc5 59.Ke5 Kc6 60.Ke6 Kc7 61.Ke7 (61.Ke7 Kc8 62.f5+–) 1–0. mic (2200) – fbershadski (2260), net–chess.com, 2007.

4.e4 d6 5.Nf3 Nf6 6.Nc3 Bg4 7.h3 Bh5 8.Be2 Bg6 9.d3 d5 10.ed5=.

4.e4 d6 5.Nf3 Bg4 6.Be2 Qf6 (6...Nf6 7.0-0=) 7.Nc3+= Nge7 8.Nd5 (8.b5 Bf3 9.bc6 Be2 10.cb7 Rb8 11.Qe2 Rb7+/–) 8...Nd5 9.ed5 Bf3 (9...Ne7 10.d4 e4 11.Nd2=) 10.Bf3+= Nd4 11.Bd4 ed4 12.0-0 Be7 13.Rc1 (13.Qe2 Kd8+=) 13...0-0 14.c4 (14.Re1 Rae8+=) 14...dc3 (14...Qh6 15.d3=) 15.dc3 Qh6 16.Re1 (16.Qd3 Bf6+=) 16...Bg5 17.Rc2 Bf4 (17...Bf6 18.h3=) 18.g3+= Be5 19.c4 (19.Bg2 a5+=) 19...f5 20.Qd3 Rae8 (20...a5 21.b5=) 21.Rce2+= f4 22.Bg4 Qg5 23.Be6 Kh8= 24.Re4 fg3 25.hg3 Qf6 26.Rf1 Re7 27.Kg2 b6 28.Qe3 c5= 29.Rh4 g5 30.Rh5 Rg7 31.Qe2+= Bd4 The pressure on the backward pawn f2 grows 32.f3 Be5 33.bc5 bc5+= 34.Qe4 Rb7 35.Rf2 Qg7 36.Kh3 Rb3 37.a4 Ra3 38.Kg4 Do you see the mate threat? 38...h6 39.Bf5 Rf6 40.Kh3 Ra1 41.Kg2 Bd4 42.Re2 Be5 43.Qc2 Qb7 44.Rh1 Rh1 45.Kh1 Qb4 46.f4 Qa3 47.Kg2 gf4= 48.gf4 Bf4 49.Re8 Kg7 Black threatens strongly Rxf5 50.Re7?? Kf8–+ 51.Re2 Qg3 52.Kf1 Be3 53.Rg2 Qf3 (53...Qf3 54.Rf2 Bf2 55.Qf2 Qh5–+) 0–1. Feio,Rui – Lopes,Paulo, Torneio Int. Leiria, 2006.

4.e4 Be7 5.Nf3 d6 6.Nc3 Nf6 7.Be2 Bg4 8.Rc1 0-0 9.0-0 Qd7 10.Rb1=.

4.e4 Be7 5.Nf3 d6 6.Nc3 Nf6 7.Be2 Bg4 8.Rc1 0-0 9.0-0 Re8 10.Ng5=.

4.Nf3 f6 5.e3 Bd6 6.Be2 Qe7 (6...e4 7.Nd4+=) 7.Nh4 (7.Nc3 b5+=) 7...g6 8.Bh5?? (better 8.c4 b6 9.d4+=) 8...gh5–+ 9.Qh5 Qf7 10.Qe2 (better 10.Qf7 Kf7 11.Nc3–+) 10...Qh5?? (10...Be7 11.f4–+) 11.Nf3 (better 11.Qh5 Kf8 12.Ng6 Kg7 13.Nh8 Kh8 14.0-0+–) 11...Be7 (11...Qg6 12.c4–+) 12.0-0 (12.e4 d6–+) 12...d6 13.Ne1 (13.Nc3 Bg4–+) 13...Bg4 (better 13...Qe2 14.Nc3 Qh5–+) 14.f3 Bf5 15.Nc3 Be6 16.Ne4 (16.e4 Nd4 17.Qf2 c5–+) 16...f5 17.Ng3 Qg6 18.Nd3 (18.f4 Bh4 19.b5 Na5 (19...Bg3?! 20.bc6 Be1 21.fe5–/+) 20.ba6 ba6–+ (20...Bg3?! 21.Qb5 Kf7 22.ab7=)) 18...Bh4 (better 18...Bf6 19.a4–+) 19.Qf2? (19.Nf4 ef4 20.ef4 Bg3 21.hg3–+) 19...Bg3 (19...Nf6!? 20.Nc1–+) 20.Qg3 Qg3 21.hg3 0-0-0 (21...Bc4 22.f4 Bd3 23.cd3–+) 22.Nf2 (22.f4 Bc4–+) 22...h5 (22...Nf6 23.d3–+) 23.f4 Rh7 (23...Nge7 24.e4–+) 24.Nh3 ef4 (24...Re7 25.Ng5–+) 25.ef4 (25.Ng5 Rh6 26.gf4 h4–+) 25...h4?? (better 25...Re7–+) 26.Ng5–/+ Rh6 27.Kf2 (27.Ne6!? Re6 28.gh4–/+) 27...hg3 28.Kg3 Nge7 29.Rh1 Rh1 30.Rh1 Bd5 31.d3 Ng6 (31...b5 32.Rc1–+) 32.Rh6 Rg8 (32...Nce7 33.c4 Bg2 34.Kg2 Nf4 35.Kf1 Nd3 36.Bd4–+) 33.c4 Be6 (better 33...Bg2 34.Rg6 Rg6 35.Kg2 Ne5 36.fe5 Rg5 37.Kf3 Rg4–+) 34.Ne6= Nge5 35.Ng5 Nd3 36.Bc3 (36.Bf6 b5 37.cb5 ab5=) 36...Re8 (36...Nce5 37.fe5 Rg5 38.Kf3 de5 39.Be5 Ne5 40.Kf4=+) 37.Rf6 (37.Re6!? Re6 38.Ne6=) 37...Re3=+ 38.Nf3 Nc1?? (better 38...Nf4 39.Rf8 Kd7=+) 39.Bd2+– Ne2 40.Kf2 Re4 41.Be3 (better 41.Rf5 Ned4 42.Rf8 Kd7 43.Rf7 Ne7 44.g4+–) 41...Nf4 42.Rf5 Nd3 43.Ke2 b6?? (better 43...Nde5 44.Ne5 Ne5=+) 44.Kd3+– Re6 (44...Rg4 45.Rg5 Rg5 46.Bg5+–) 45.Ng5 (45.b5 ab5 46.cb5 Ne7+–) 45...Ne5 46.Kd4 Nc6 (46...Re8 47.Bf4 Ng6 48.Rf6 Nf4 49.Rf4+–) 47.Kd5 Re5 48.Re5 Ne5 49.Bd4 c6 (49...Ng6 50.Ne4+–) 50.Kd6 Nc4 51.Kc6 Na3 (51...b5 52.Nf7 Na3 53.Be5+–) 52.Kb6 Nc4 (52...Nb5 53.Ne6 Kd7 54.Ka6 Ke6 55.Kb5+–) 53.Ka6 Kc7 (53...Nd6 54.b5+–) 54.Kb5 (better 54.Nf7 Kc8+–) 54...Kd6 (54...Na3 55.Kc5+–) 55.Bc5 (better 55.Kc4 Kd7+–) 55...Kd5 56.Nf3 Ne3 (56...Nb2+–) 57.Be3 (57.Be3 Ke4 58.Kc5 Ke3 59.b5+–) 1–0. Akrapovik (1605) – getaldus (1630), lichess.org, 2020.

4.Nf3 f6 5.e4 b5 6.Be2 d5 7.ed5 Qd5 8.Nc3 Qe6 9.d4 Nd4 10.Nd4 ed4 11.Qd4 Bb7 12.0-0-0 Bd6 13.Rhe1 Kd8?? 14.Bf3+– Qc8 15.Ne4 Be4 16.Qe4 (16...Qd7 17.Qa8 Qc8 18.Re8 Ke8 19.Qc8 Kf7 20.Bd5 Kg6 21.Bg8 Rg8 22.Qg8+–) 1–0. labackna – dhub noire, ChessWorld.net, 2006.

4.Nf3 Qf6 5.e3 d5 6.c4 Be6 7.c5 d4 8.Be2 Bg4 9.0-0 Bf3 10.Bf3 d3 11.Bc6 bc6 12.Qb3 Qf5 13.f3 Nf6 14.e4 Qd7 15.Be5 Be7 16.Nc3 0-0 17.Bg3 Nh5 18.Bf2 Bf6 19.Rac1 Bd4 20.Qc4 Bf2 21.Rf2 Nf4 22.g3 Nh3 23.Kg2 Nf2 24.Kf2 Rfd8 25.Nd1 Qh3 26.Kg1 a5 27.Nf2 Qe6 28.Qe6 fe6 29.Rc3 ab4 30.ab4 Ra1 31.Kg2 Ra2 32.Nd3 Rd2 33.Nf2 Ra2 34.Rc1 Rdd2 35.Rf1 Rab2 36.Kg1 Rb4 37.Ng4 Rbb2 38.Rc1 h5 39.Ne3 Rh2 40.Rd1 Rhe2 41.Nc4 Rg2 42.Kf1 Rbf2 43.Ke1 Rf3 44.Nd2 Rg1 45.Ke2 Rd1 46.Nf3 Rc1 47.Kd3 Rc5 48.Kd4 Rc1 49.Ne5 c5 50.Kd3 Rg1 51.Nd7 Rg3 52.Kc4 Rg4 53.Nc5 h4 54.Kd3 Kf7 55.Ke3 g5 56.Kf3 Rg3 57.Kf2 g4 58.Nd7 Rf3 59.Kg2 h3 60.Kg1 Re3 61.Ne5 Ke7 62.Ng4 Re4 63.Nf2 Re3 0–1. mihai740609 – introvertit, kurnik, 2012.

4.g3 Nf6 5.Bg2 Nd4 (5...d5 6.c4=+) 6.e3 (6.f4 Qe7+=) 6...Nb5 (6...Nc6!?=) 7.Be5+/– Be7 (7...d5 8.Nf3+/–) 8.Nc3 (8.c4!? Nd6 9.d3+/–) 8...Nc3 9.Bc3 0-0 10.Qe2 (10.Nf3 d5+/–) 10...d5+= 11.0-0-0 (11.Nf3 Ne4+=) 11...Ne4 (11...a5 12.Bf6 Bf6 13.b5=+) 12.Bb2+= c5 13.Be4 (13.bc5 Bc5 14.f3 Nd6=) 13...de4=+ 14.Qc4 (14.bc5 Qd5 15.h3=+) 14...Bg4 (better is 14...cb4!? 15.ab4 Bg4 16.Qe4 Bd1 17.Kd1 Qd6=+) 15.Re1 (15.f3!? Be6 16.Qc3=) 15…Kh8. flaxman – shacker, net–chess.com, 2003.

4.g3 Nf6 5.Bg2 d5 6.c4 +=.

4.g4 d5–/+ 5.h3 Nge7 6.Bg2 Be6 7.e3 Ng6 8.Nf3 f6 (8...e4 9.Nh2–/+) 9.d3=+ Be7 10.Nbd2 0-0 11.Qe2 Bd6 12.Nh4?? (better 12.c4=+) 12...Nh4–+ 13.Bf1 Ne7 14.Nf3 (14.c4 dc4 15.dc4 c5–+) 14...Nf3 15.Qf3 c5 16.bc5 Bc5 17.Qe2 Qb6 (17...d4 18.c3–+) 18.Rb1 (18.c3 Ng6–+) 18...d4 19.Kd2 (19.ed4 ed4 20.Qd1 Ba2–+) 19...Qa5 (19...Ba2!? 20.Bg2 Rfc8 21.ed4 Bb1 22.Rb1 Bd4 23.Kc1 Bf2 24.c4–+) 20.Kd1 de3 21.fe3 Nd5 22.d4 Ba3 23.Ba3 (23.Qd2 Bb4 24.Qd3 ed4 25.Bd4–+) 23...Nc3 24.Ke1 Ne2 25.Ke2 ed4 (better 25...Qa3 26.Bg2 Bc4 27.Kf2 ed4 28.Rhe1–+) 26.Rb7 (26.Bf8 Kf8 27.Kf3 de3 28.Bd3–+) 26...de3 (better 26...Qa3 27.ed4 Rfc8–+) 27.Bb2 Qd2 28.Kf3 Bd5 29.Kf4 (29.Kg3 Qf2) 29...Bb7 (29...Qf2) 30.Rg1 (30.Bc4 Kh8 31.Rf1 g5 32.Kf5 Qd7 33.Be6 Qb5 34.Bd5 Qd5 35.Be5 Qe5) 30…e2 (30...e2 31.Kf5 Qd5 32.Kf4 Qf3; 30...Qf2) 0–1. adabriwala (1610) – paulyzz (1815), lichess.org, 2019.

4.g4 d6 5.h3 Be6 6.Bg2 Qd7 (6...h5 7.gh5 Nf6 8.d4–/+) 7.e3 Nge7 8.d3 f5 9.gf5 Bf5 10.Ne2 Bg6 11.Ng3 Ng8 (11...d5 12.Qg4=) 12.Nd2 Nf6 13.Qe2 Bh5?? (better 13...Be7=) 14.Nh5+– Nh5 15.Qh5 g6 16.Qg4 Qf7 (16...Bg7 17.f4+–) 17.Bc6 bc6 18.Ne4 (18.f4 Bg7 19.fe5 0-0+–) 18...a5 (18...Qe7 19.f4 Bg7 20.fe5+–) 19.ba5 (better 19.f4 h5 20.Qg2 ab4 21.Nd6 Bd6 22.Qc6 Ke7 23.fe5+–) 19...Ra5 (19...Qe7 20.f4 Bg7 21.fe5 Be5 22.Be5 Qe5 23.0-0+–) 20.Ng5 (better 20.Qc8 Ke7 21.Qc7 Ke8 22.Qa5 Qg7+–) 20...Qe7 (20...Qf5 21.Bc3 Rb5 22.a4+–) 21.Qe6 (better 21.Qc8 Qd8 22.Qd8 Kd8 23.Nf7 Ke7 24.Nh8+–) 21...h6 (21...Qe6 22.Ne6 Kd7+–) 22.Qc8 (better 22.Qg6!? Kd7 23.Qf5 Ke8 24.Qc8 Qd8 25.Qd8 Kd8 26.Nf7 Kd7 27.Nh8 Bg7+–) 22...Qd8 23.Qd8 Kd8 24.Ne6 (better 24.Nf7 Ke8 25.Nh8+–) 24...Kd7 25.Nf8 Rf8 26.Rg1 g5 27.Kd2 (27.Ke2 Rb8 28.Bc1 Rc5+–) 27...Rb8?? (better 27...Rf2 28.Kd1 Rh2+–) 28.Rab1 (28.Bc3 Ra4+–) 28...Rab5 29.Kc1 Ke6 (29...Rf8 30.Rg2+–) 30.Rg4 (30.c4 R5b6+–) 30...c5 (30...Rf8 31.Rg2+–) 31.Ra4 (31.c4 Rb3 32.Kc2 Kf5+–) 31...R8b7? (31...Rf8 32.f4!+–) 32.c3 (32.f4 ef4 33.ef4 c4 34.Rc4 Rf5+–) 32...Kf5 (32...Rb8 33.Kc2+–) 33.d4 (33.Kc2 c6+–) 33...ed4 34.ed4 cd4 35.Rd4 (35.cd4?! Rb3+–) 35...Ke5 (35...R5b6 36.Kc2+–) 36.f3 Ke6 37.c4 (37.f4 Rf5 38.fg5 c5 39.Re4 Kd5+–) 37...R5b6 (37...Rb3+–) 38.Rd5 (38.h4 Rb3 39.hg5 hg5+–) 38...c6? (better 38...Rc6 39.Rd3 Rc4 40.Kd2 Kf5+–) 39.Rd3+– d5 (39...Rb3 40.Kc2 Rd3 41.Kd3 Rb3 42.Ke2+–) 40.Re3 (40.cd5 cd5 41.Kc2 Kd6+–) 40...Kf5 41.cd5 cd5 42.Re5 Kf4 43.Rd5 Kf3 44.Rd3 Kg2 45.Kc2 Kf2 (45...h5 46.a4+–) 46.Rd2 (46.Bd4 Kg2 47.Bb6 Rb6 48.Rb6 h5 49.Rbb3 Kh1 50.Rd2 g4 51.Rb1) 46...Kf3?! (46...Kg3+–) 47.Rd3 (47.a4 Rc6 48.Kd1 Rb3+–) 47...Kg2?? (47...Kf2 48.Bd4 Kg2 49.Bb6 Re7+–) 48.Rdd1 (48.a4 h5+–) 48...Rb5 (48...Kh3 49.a4+–) 49.Bf6 (49.h4 gh4 50.Rg1 Kh3 51.Rh1 Kg4 52.Rbg1 Kh5+–) 49...Kh3? (49...Rb1 50.Rb1 Rb1 51.Kb1 Kf3+–) 50.Rb5 (50.Rh1 Kg2 51.Rbg1 Kf3 52.Rh3 Ke4 53.Rh6 R7b6 54.Re1 Kf3+–) 50...Rb5 51.Rd3 (better 51.Rh1!? Kg2 52.Rh6 g4+–) 51...Kg4 52.a4 Ra5 53.Rd4 Kf5 (53...Kh3 54.Bd8 Ra6 55.Rd3 Kg2 56.a5+–) 54.Bd8 Rc5 55.Kb3 (55.Kd3 Rc6+–) 55...h5 56.Bb6 Rc6 57.Ba5 (57.a5!? h4 58.Rd5 Kf4+–) 57...h4+– 58.Bd8 h3 (58...Rg6 59.Rd3+–) 59.Rd5+– Ke4 60.Rg5 Rh6 (60...Kf3 61.Rh5 Kg2 62.a5+–) 61.Rg1 h2 62.Rh1 Kf3 63.Bc7 Kg2?? (63...Rh7+–) 64.Rh2! Rh2 65.Bh2 Kh2 66.a5 (66.a5 Kg3 67.a6 Kf3 68.a7 Kf4 69.a8Q Ke3 70.Qc6 Kf4 71.Kc4 Ke3 72.Qe6 Kf2 73.Kd4 Kf3 74.Qe4 Kf2 75.Qf5 Ke2 76.Qh5 Kf2 77.Ke4 Kg2 78.Qf3 Kg1 79.Qe2 Kh1 80.Kf3 Kg1 81.Qg2) 1–0. adabriwala (1605) – zoxe (1820), lichess.org, 2019.

4.h3 d5=+ 5.g4 (5.Nf3 e4 6.Nd4 Nd4 7.Bd4 Ne7=+) 5...f5 (5...h5 6.gh5 Bd6 7.Bg2–/+) 6.gf5=+ Bf5 7.d3 Nf6 8.e3 (8.Bg2 Qd7=+) 8...Bd6 9.Ne2 0-0 10.Ng3 Bg6 11.Bg2 Qe7 Black prepares the advance e4 12.Nd2 Rad8 (12...e4 13.0-0=+) 13.Nb3 (13.h4!?=+) 13...e4–/+ 14.Qd2 Bg3 15.fg3 ed3 16.cd3 Ne5 17.Qc3?? (better 17.Be5 Qe5 18.0-0–/+) 17...Nd3–+ 18.Kd2 Rfe8 (better 18...Ne4 19.Be4 Rf2 20.Kd1 Bh5 21.g4 Nb2 22.Kc1 Qe4 23.Nd2 Nd3 24.Kc2–+) 19.Rae1 (19.Rhe1 Ne1 20.Re1 Be4–+) 19...Ne1 (19...Nb2?! 20.Qb2 Qd6 21.Rhg1 Qg3 22.Nd4–+) 20.Re1 Be4 21.Bf1 Bf3 (better 21...Bf5 22.Qd4 Ne4 23.Kc1 Ng3–+) 22.Be2 (22.Bd3–+) 22...Ne4 23.Kc2 Nc3 24.Bc3 (24.Bf3 Ne4–+) 24...Qe3 25.Bf3 Qf3 26.Nd4 Qg3 (26...Qf2 27.Kd3–+) 27.Ne2 Qf2 28.Kd2 d4 29.Bb2 (29.Rg1 Re2 30.Kd3 Qe3 31.Kc4 Qc3) 29...d3 30.Rh1 (30.Kc3 Qe1 31.Kb3 Qd1 32.Ka2 de2 33.a4 Qa4 34.Kb1 e1Q 35.Bc1 Qeb4 36.Bb2 Re1) 30...Qe2 31.Kc1 (31.Kc3 Qc2) 31…Qc2 0–1. adabriwala – bustomi_sobat (1770), lichess.org, 2019.

4.h3 Nf6 5.g4 h6 6.Bg2 d6 7.d3 Bd7 8.e3 Be7 9.Nd2 Rb8 10.Nb3 (10.Ngf3 Ra8=) 10...b6 (10...0-0 11.Nf3=) 11.Qd2 d5 Black prepares e4 12.Nf3 e4 (12...Bd6 13.0-0=) 13.Nfd4 (13.de4 de4 14.Ne5 Ne5 15.Be5 0-0+=) 13...Nd4 14.Nd4 (14.Bd4 ed3 15.cd3= (worse 15.Qd3 c5–/+)) 14...h5 (14...c5 15.Nb3 ed3 16.Be5= (16.Qd3? c4 17.Qc3 cb3–+; worse 16.cd3 Ba4 17.Rb1 Bb3 18.Bf6 Bf6 19.Rb3 c4=)) 15.gh5 (better 15.g5!? Nh7 16.h4+–) 15...Rh5 16.de4 de4 17.Qc3 (17.Ne2 Rd5 18.Qc1 Rg5=+) 17...c5–/+ 18.bc5 Rc5 19.Qd2 Rg5 20.Bf1 (20.f4 Rd5=+) 20...a5 (20...Qc8 21.Be2–/+) 21.Bc4 (21.Rb1 Rh5=+) 21...Bc5 (21...b5 22.Be2=+) 22.Bb5 (22.Nb5 Qe7=) 22...Bd4 (22...Bb5 23.Nb5 Qd2 24.Kd2=+) 23.Bd7 Qd7 24.Qd4 (24.Bd4 Qc6=+) 24...Qc7 25.0-0-0 (25.Rd1!?=+) 25...Rc8–/+ 26.Qa4?? (better 26.Rd2 Rc5 27.Rg1 Rc2 28.Kb1–+) 26...Kf8 (better 26...b5 27.Qb3 a4–+) 27.Rd2 (27.Bf6 gf6 28.Qe4 Rc5+=) 27...Qb7 (27...b5!? 28.Qb3 Nd7=+) 28.Rhd1 Kg8? (better 28...Ne8=) 29.Rd8+– Rd8 30.Rd8 Kh7 31.Bf6 gf6 32.Rd7 Qc8 (32...b5 33.Rb7 ba4 34.Rf7 Kg6 35.Rf8 Rg1 36.Kb2+–) 33.Rf7 Kg6 34.Re7 Rc5 35.Qe4 Kh6?? (35...Qf5+–) 36.Rh7 Kg5 37.Qg6 (37.h4) 37...Kg6 38.Rg7 (38.c3 Rc3 39.Kd1 Rc1 40.Ke2 Qc2 41.Kf3 Qf5 42.Kg2 Qe4 43.f3 Qc2 44.Kg3 Rg1 45.Kf4 Qf5) 38...Kg7 39.Kd1 (39.c3 Rc3 40.Kd1 Qc4 41.a4 Qd3 42.Ke1 Rc1) 39...Rc2 40.Ke1 (40.e4 Qc3 41.e5 Qd2) 40...Rf2! 41.Kf2 (41.Kf2 Qh3 Combination) 41...Qc3 42.Kf3 Qa3 43.Ke4 b5 44.Kd5 b4 45.Kc4 b3 (45...Qc3 46.Kd5 b3 47.Kd6 b2 48.Kd7 b1Q 49.Ke6 Qbd3 50.e4 Qe5) 46.e4 (46.Kd3 b2 47.Kd2 b1Q 48.Ke2 Qab2 49.Kf3 Qf5 50.Kg3 Qbf2) 46...b2 47.e5 (47.Kb5 b1Q 48.Kc6 Qe7 49.Kd5 Qbe4) 47...b1Q 48.ef6 Kf6 49.h4 (49.Kd5 Qb5 50.Kd4 Qad3) 49...Qad3 (49...Qbd3) 50.Kc5 a4 (50...Qbb5) 51.Kc6 a3 (51...Qbb5 52.Kc7 Qdd7) 52.h5 (52.Kc7 Qbb5 53.h5 Qdd7) 52...a2 (52...Qbb5 53.Kc7 Qdd7) 53.h6 (53.Kc7 a1Q 54.h6 Qac3) 53...a1Q 54.h7 Qac3 0–1. adabriwala (1640) – wirbelnder (1720), lichess.org, 2019.

4.c4 b5

5.cb5 ab5 6.e3 Ba6 7.Nc3 Nf6 (7...Rb8!?+=) 8.Bb5+– Bb5 9.Nb5 Be7 10.Nf3 d6 (10...Qb8!? 11.Qe2 e4+–) 11.Rc1 0-0?? (better 11...Ra6+–) 12.Rc6+– Nd5 (12...Qb8 13.Nc7 (13.Rc7?! Nd5+–) 13...Ra7 14.Qc2+–) 13.Qb3 Nf6 14.0-0 Ne4 (14...Qd7 15.Rfc1+–) 15.Nc7 Rc8 16.Rfc1 Qd7 17.Qd3 f5 (17...Nf6 18.Ne5! de5 19.Qd7 Nd7+–) 18.Ne5! Qd8 (18...de5 19.Qd5 Double attack (19.Qd7 Pinning; 19.Qd7 Deflection; 19.Qd5 Decoy)) 19.Qd5 Kh8 20.Nf7 Rf7 21.Qf7 Bf6 22.Ne8 h6 (22...Qe7 23.Rc8 Qf7 24.Nf6 Qe8 25.Re8) 23.Bf6 Qf6 (23...Qd7 24.Qd7 Rc7 25.Rc7 Nf6 26.Qg7) 24.Nf6 Nf6 25.Rc8 Kh7 26.R1c7 Nh5 (26...Nd7 27.Qf5 g6 28.Qd7) 27.Qf5 1–0. Fournier,Frederic (2450) – Bylka, echecsemail.com, 2010.

5.cb5 ab5 6.e3 d5? 7.Bb5+– Bd7 8.Bc6 Bc6 9.Be5 Bb4?? (better 9...Ne7+–) 10.ab4 (10.Bg7 Qg5 11.Bh8 Qg2 12.ab4 Ra1 13.Ba1 Bb5+–) 10...f6 (10...Ra1 11.Ba1 Ne7 12.Bg7+–) 11.Ra8 (11.Ra8 Ba8 12.Bd4+–) 1–0. GuestKMYB – GuestKBWG, freechess.org, 2018.

5.cb5 ab5 6.e4 Ba6 7.Nc3 (7.Nf3+=) 7...Bd6 (7...Nd4!?+=) 8.Bb5 Bb5 9.Nb5 Nf6 (9...Qe7 10.Ne2+–) 10.Nd6 cd6 11.b5 (11.Qf3 0-0+–) 11...Na5 (11...Qb6 12.a4 Ne4 13.Nh3+=) 12.Rc1 (12.d3!?+–) 12...Ne4+= 13.Nf3 Qb6 14.0-0 (14.Qe2!? Nf6 15.0-0+=) 14...Qb5=+ 15.d3 (15.Qc2 f5=+) 15...Qb2 (15...Nf6 16.Rb1 Qd5 17.Ng5=+) 16.de4 Qa3 17.Qd5 0-0 (17...Nc6 18.Rfd1=+) 18.Rcd1 (better 18.Rc7!?=) 18...Ra6–/+ 19.Rd3 Qb4 20.Rc1 Rb8 (better 20...Qb7–/+) 21.Ng5+– Rf8 (better 21...Qb2 22.Qf7 Kh8+–) 22.Nf7!+– Nc6?? (22...Rf7 23.Rc8) 23.Nh6 Kh8 24.Qg8!! (24.Qg8 Rg8 25.Nf7) 1–0. jaddwarrior (1755) – island.star (1860), ChessWorld.net, 2014.

5.e3 Bb7 6.Nf3 d6 7.d4 e4 8.Nfd2 (8.cb5 ef3 9.bc6 Bc6 10.gf3+–) 8...f5? (8...bc4 9.Ne4 Nb4 10.ab4 Be4 11.Nc3+–) 9.d5 (better 9.cb5!? Nb8 10.ba6 Ba6 11.Ba6 Ra6 12.d5+–) 9...Ne5+= 10.c5 (better 10.cb5 Bd5 11.ba6+–) 10...dc5?? (better 10...Bd5 11.Be5 de5=+) 11.Be5+– c4 (11...Qd5 12.Bc7 cb4 13.a4+–) 12.Nc3 (better 12.Qh5 g6 13.Qh3+–) 12...Bd5? (better 12...Nf6+–) 13.Qh5 Bf7 14.Qf5 (14.Qf5 Bg6 15.Qe6 Ne7 16.Bf4+– (16.Nce4?! Bf5 17.Nf6 gf6 18.Qf6 Rg8+–; 16.Nde4?! Bf5 17.Nf6 gf6 18.Qf6 Rg8+–)) 1–0. cjc2jz – bf591715, lichess.org, 2019.

5.e3 bc4 6.Bc4 d5 7.Bb3 d4 (7...Nge7!?=) 8.Qf3 Bb7?? (better is 8...Qf6+=) 9.Qf7 1–0. mtr – Wichtel4, internet, 2001.

5.e3 d5 6.cb5 ab5 7.Bb5 Bb7 8.Bc6 Bc6 9.Be5 Ne7 10.Qg4 (10.Nf3 Ba4 11.Qc1 f6+–) 10...Ng6 11.Bd4 Bd6 (11...Bd7 12.Qh5 Ne7 13.Nf3+–) 12.Bg7 Rg8 13.Bd4 Bd7 14.Qd1 (14.Qh5 Ne7+–) 14...Nh4 (better 14...Ne5 15.Qb3 Ba4+–) 15.Kf1 (better 15.g3 Nf5 16.Bc5+–) 15...Rg2+= 16.Qh5 Bh3?? (better 16...Bf5=) 17.Nh3+– Bb4 (17...Rg6 18.Qd5 Qc8 19.Qe4 Be7 20.Nf4+–) 18.Qh7 (18.ab4!? Ra1 19.Ba1 Qe7 20.Qd5 Rg6 21.Qb5 c6 22.Qb8 Kd7+–) 18...Bd6 (18...Bf8 19.Qh8 Rg4 20.Nf4+–) 19.Qh8 Bf8 (19...Kd7 20.Qd8 Rd8 21.Bf6 Rh2 A) 22.Bh4 Rh1 23.Kg2 Rh2 24.Kf3 Rg8–+ (24...Rh3?! 25.Kg4 Rh4 26.Kh4+=); B) 22.Rh2 Bh2 23.Nc3+–) 20.Rg1 (20.Bf6 Qd7 21.Qh4 Rg4+–) 20...Rh2 (20...Ng6 21.Qh5 Rg1 22.Kg1 c5+–) 21.Qe5 Qe7 22.Qh2 Nf3 23.Qg3 (23.Qg2 Qe4 24.Nf4 Ng1 25.Kg1 c6+–) 23...Ng1 24.Qg1 Ra6 (24...c5 25.Bc3+–) 25.Qg8 (better 25.Nf4 c6+–) 25...Rg6 26.Qh8 (better 26.Qh7 c5 27.Bc3 Qe4+–) 26...Kd7 (26...Rh6 27.Qe5 Rh3 28.Qd5 c5 29.Qc6 Qd7 30.Qd7 Kd7+–) 27.Qe5 Qh4 (27...Qe5 28.Be5 Rh6 29.Nf4+–) 28.Qd5 Ke8 29.Qb5 Kd8 (29...c6 30.Qb8 Qd8 31.Qd8 Kd8 32.d3+–) 30.Qb8 (30.Nf4 Rd6 31.Qb8 Ke7+–) 30...Ke7 (30...Kd7 31.Nf4 Bd6 32.Qb5 Ke7 33.Ng6 fg6 34.Nc3+–) 31.Qc7 Ke8 32.Qc8 Ke7 (32...Qd8 33.Qd8 Kd8+–) 33.Bc5 Kf6 34.Bf8 (better 34.Qd8 Ke6 35.Qh4 Bc5 36.Qc4 Kf6 37.Qc3 Bd4 38.Qd4 Ke7 39.Qe5 Re6 40.Qc7 Kf6+–) 34...Qh3 35.Qh3 (35.Qh3 Rg5 36.e4 Ke5 37.f4 Ke4 38.Nc3 Kf4 39.Bd6 Re5 40.Qh5 f6 41.Kg2 f5 42.Rf1) 1–0. MARYMARY – 488, ChessWorld.net, 2012.

4.c4 d6

5.e3 Bd7 6.Be2 Nf6 7.Nf3 Be7 8.0-0 0-0 9.d4 e4 10.Nfd2 Qc8 11.d5 Na7 12.Nc3 Bg4 (12...Bf5 13.Qb1+/–) 13.Nce4+– Be2 14.Qe2 Ne4 15.Ne4 Qf5 16.Ng3 Qg6 17.Qf3 f5 18.Rad1 Bg5 19.Ne2 Nc8 20.Nf4 Bf4 21.Qf4 Nb6 22.c5 Nc8 23.Qc4 Ne7 24.Rd4 Qf7 25.Rfd1 Ng6 26.a4 (26.c6 bc6 27.dc6 Rfb8+–) 26...Ne5 (26...f4 27.e4+/–) 27.Qc3 Qg6 28.Kh1 Ng4 29.R1d2 Rf7 30.h3 Ne5 31.a5 Raf8 32.f4 Nd7 33.c6 bc6 34.Qc6 Nb8 35.Qa8 Qg3 36.R4d3 Qg6 (36...Qe1!? 37.Kh2 Re8+/–) 37.Bd4+/– Re7 38.Ba7 Nd7 39.Qb7 Rfe8 40.Qa6 Nf6 41.Qc4 Ne4 42.Rb2 Qg3 43.Qc1 Nf2 44.Rf2 Qf2 45.Bd4 Qg3 (45...Rb8 46.a6 Qa2 47.a7+/–) 46.a6+/– h6 47.a7 Ra8 48.Qc6 Ree8 49.Qc7?? (better is 49.Rc3 Qg6 50.Qc7+–) 49...Rec8= 50.Qg7 (better is 50.Rc3 Rc7 51.Rc7+=) 50...Qg7–/+ 51.Bg7 Kg7 52.Ra3 Rc7 53.Ra6 Rd7 54.b5 Raa7 55.Rc6 Rab7 (better is 55...Ra3!?–+) 56.b6 Kf6 57.g4 fg4 58.hg4 Ke7 59.e4 Rd8 60.Kg2 (60.e5 de5 61.Rh6 Rbb8 62.fe5 Rd5–+) 60...Rbb8 (60...Rdb8 61.e5 Rb6 62.Rc7 Ke8 63.Rh7 Rb2 64.Kf3–+) 61.Rc7 Ke8 (better is 61...Rd7 62.Rc6 Rdb7–+) 62.b7= Rd7 63.Rc8 Rd8 64.Rc7 Rd7 65.Rc8 Rd8 66.Rc7 ½–½. mikebaldini (1620) – mrx3419, gameknot.com, 2015.

5.e3 Be7 6.b5 Nb8 7.c5 (7.Nf3 Nf6=) 7...ab5 8.Bb5 c6 9.cd6 Bd6 (worse is 9...cb5 10.de7 Ne7 11.Be5+=; 9...Qd6?! 10.Be2 Nf6 11.Nf3+=) 10.Bc4 Nf6 11.h3 (11.Nf3 Nbd7 12.Nc3 0-0–/+) 11...Ne4 (11...0-0 12.Nf3 e4 13.Ng5–+) 12.Qh5 (12.Nc3 Nc3 13.Bc3 b5=) 12...Qf6 13.Nf3 Can e5 get defended? 13...g6 14.Qh4 Qh4 15.Nh4 Nf6 16.Nf3 Nfd7 (better is 16...Nbd7!?+=) 17.0-0 0-0 18.d4 e4 19.Ng5 h6 (19...Nb6!? 20.Ba2 Be7 21.Ne4 Be6+=) 20.Ne4+/– Nb6?? (better is 20...Be7+/–) 21.Nd6+– Nc4 22.Nc4 Bf5 23.Nd6 Bd3 24.Re1 b5 25.Nc3 Nd7 26.Nb7 Nf6 27.Nc5 Bc4 28.e4 Nh5 29.d5 cd5 30.Nd5 Bd5 31.ed5 Rfd8 32.Rad1 Nf4 33.d6 Rac8 34.Bf6 Re8 35.Re8 Re8 36.d7 (36.d7 Rf8 37.d8Q Ne6 38.Ne6 fe6 39.Qe7 Rf6 40.Rd8 Rf8 41.Rf8#) 1–0. fjanusz52 – samkaz, kurnik, 2012.

5.e3 f5 6.Be2 Qf6 (6...Be6 7.Nf3=) 7.Bh5 (7.d4 f4+=) 7...g6= 8.Be2 Bg7 9.Nf3 Nge7 10.Nc3 (10.d4 e4 11.Nfd2 d5=) 10...0-0 (10...e4 11.Na4 Qf8 12.Nd4=) 11.Nd5 (11.d4 ed4 12.Nd5 Nd5 13.cd5 Ne5 14.Nd4 f4=) 11...Nd5=+ 12.cd5 Ne7 13.Bc4 Qf7 (13...b5 14.Bb3=+) 14.Ba2 b5 (14...h6 15.Qb3 g5 16.Rc1=) 15.0-0 e4 (15...h6 16.d3=) 16.Bg7 (16.Ng5 Qe8 17.Bg7 Kg7+=) 16...Qg7 (16...Kg7 17.Ng5 Qf6 18.Nh3=) 17.Ng5 (17.Nd4 Ra7+=) 17...Qh6 (17...h6 18.Nh3=) 18.Ne6 (18.Nh3 g5 19.f3 f4=) 18...Be6=+ 19.de6 g5 (19...c6 20.a4=+) 20.f3= Qf6? (better 20...d5!?=) 21.fe4+– f4 (21...Qb2 22.ef5 Rf5 23.Rf5 Nf5 24.Bd5+–) 22.ef4 gf4 23.Qg4 (23.d4 a5+–) 23...Kh8+– 24.Qf3 Ng6 (better 24...a5+–) 25.Rf2?? (better 25.Rac1 Rac8 26.Qc3+–) 25...Qa1–+ 26.Rf1 Qa2 27.Qf2 (27.Qc3 Kg8–+) 27…Qc4 0–1. alddhsfd (1930) – Chess_Insight (1945), lichess.org, 2020.

5.e3 Bf5 6.Nf3 Nf6 7.Be2 Be7 8.0-0 0-0 9.d4 ed4 (9...e4 10.Nfd2=) 10.Nd4+= Bg6 (10...Nd4 11.Qd4 Qd7 12.Nc3+=) 11.Nc6 bc6 12.Bf3 Qd7 13.Nd2 a5 14.b5 d5 (14...cb5 15.Ba8 Ra8 16.cb5 Qb5 17.Qf3+=) 15.a4 (15.bc6 Qc6 16.cd5 Nd5+/–) 15...Rad8 (15...Bd3 16.bc6 Qc6 17.Re1+=) 16.Qb3 (16.Bc3 Bd3 17.Re1 cb5 18.cb5 Ra8+/–) 16...dc4 (better is 16...Ne4!? 17.Rfd1 Qf5+=) 17.Nc4+/– Bd3 (17...Ne4 18.Ne5 (18.Na5?! Nd2 19.Qd1 cb5=) 18...Qd6 19.Nc6+/–) 18.Rfd1 Bc4 (18...Qf5 19.Na5 Bc2 20.Nc6 Bc5+– (20...Bb3?? 21.Ne7 Kh8 22.Rd8 Rd8 23.Nf5+–)) 19.Qc4+– cb5 (19...Qe6 20.Qc6 Bd6 21.Qc3+–) 20.ab5 (better is 20.Rd7!? bc4 21.Re7 Rb8 22.Bf6 gf6+–) 20...Qf5 21.Ra5 Rd1 22.Bd1 Qb1 23.Qc1 Qf5 24.Bf3 Bb4 25.Ra7 Bd6 26.Ra8 Ra8+= 27.Ba8 Ng4 28.f4 Ne3 29.Qe3+/– Bc5 30.Bd4 Qb1 31.Kf2 Qc2?? 32.Kg3+– h5 33.Bc5 (33.Bc5 Qg6 34.Kf3 Qg4 35.Kf2 Qh4 36.Ke2 Qg4 37.Bf3+–) 1–0. carocan (1735) – kltnt13 (1630), kurnik, 2011.

5.e3 g6 6.Bd3 Nf6 7.Bc2 Bg7 8.Nf3 0-0 9.0-0 b5 10.cb5 ab5 11.d4 Bg4 12.Nbd2 ed4 13.ed4 Re8 14.Re1 d5 15.Re8 Qe8 16.Qf1 Na7 17.Re1 Qc6 18.Bb3 Nd7 19.h3 Bf5= 20.g4 Bc2?? 21.Rc1+– Bd3 22.Qd3 Qd6 23.Nb1 c6 24.Bc3 Qf4 25.Bd2 Qd6 26.Re1 Nf6 27.Ne5 Rc8 28.Bf4 Qf8 29.Qf3 Ne4 30.Re4 de4 31.Qe4 Kh8 32.Nf7 (32...Kg8 33.Be5 Qf7 34.Bf7 Kf7 35.Bg7 Kg7 36.Qe7 Kg8 37.Qa7+–) 1–0. Trkn – Frank, itsyourturn.com, 2000.

5.e3 g6 6.Nf3 Bg4 7.Nc3 Nge7 8.Bd3 (8.h3 Be6=) 8...f5 9.0-0 e4 (better 9...Bg7 10.Be2 e4=) 10.Qa4?? (better 10.Be4 fe4 11.Ne4 Bf3 12.Qf3+–) 10...ed3 (10...ef3!? 11.h3 fg2 12.Kg2–+) 11.Nd4 Qd7 (better 11...Kf7 12.f3 Nd4 13.ed4 Bh5–/+) 12.Ncb5? (12.Nc6 Nc6 13.Nd5 Bg7 14.Bg7 Qg7–/+) 12...Nc8?? (better 12...Rg8 13.f3 Bh5–+ (13...ab5 14.Qa8 Nd8 15.fg4+–)) 13.Na7?? (better 13.Ne6! ab5 14.Qa8=) 13...Ra7 (13...N8a7 14.f3 Bh5 15.Nf5–+) 14.Qb3 (14.Nc6 Rg8 (14...Qc6?! 15.Qc6 bc6 16.Bh8–+; 14...bc6?! 15.Bh8 Be2 16.Rfc1–/+) 15.Bd4 Ra8–+ (15...bc6?! 16.Ba7 Na7 17.f3–+)) 14...Nd4 15.Bd4 Bg7 16.Bg7 Qg7 17.Qd3 0-0 18.Qd5 Kh8 19.f3 c6 20.Qd3 Bh5 21.g4 (21.a4 b6–+) 21...fg4 22.fg4 Rf1 23.Rf1 Bg4 24.c5 d5 25.Rf4 (25.e4 Qe5 26.ed5 Bf5–+) 25...h5 (25...Bf5!? 26.Qd4–+) 26.e4 Qe7 (26...Ne7 27.Qg3 Ra8 28.h3–+) 27.Qd4 Kg8 28.d3 g5 (28...de4!? 29.de4 a5 30.Rf6–+) 29.Rf6 Qh7 (29...a5 30.ed5 ab4 31.d6–+) 30.Qf2?? (30.Qe5 Ne7 31.Qb8 Bc8 32.Qa7 de4 33.Qb6–+) 30...Qg7 31.d4 (31.Qb2 Ne7–+) 31...de4 32.Re6 (32.Qf1–+) 32...Be6 33.Qe2 Qd4 34.Kf1 Bc4 35.Qc4 (35.Kg2 Be2 36.h3 Bf3 37.Kf1 Qd1 38.Kf2 Qe2 39.Kg3 h4) 35...Qc4 36.Kf2 (36.Kg2 Qa2 37.Kg1 e3 38.h4 Qf2 39.Kh1 e2 40.hg5 e1Q) 36...b5! 37.Ke3 (37.Kg2 Qe2 38.Kg1 Rd7 39.a4 Rd1) 37...Rf7 38.a4 (38.a4 Qd3; 38.Kd2 Rf2 39.Ke3 Re2). MARYMARY – crystal palace (1655), ChessWorld.net, 2014.

5.g3 Be6 6.e3 (better 6.d3=) 6...b5 (6...Nf6 7.Nf3=+) 7.Qc2 (better 7.cb5!? ab5 8.Bb5+–) 7...bc4= 8.Bc4 Bc4 9.Qc4 Nb8 (9...Nge7 10.d3=) 10.f4 d5 11.Qc3 ef4 12.gf4 d4 (12...d4 13.Qd4 Nd7+–; better 12...Nd7!?=). pat_cash87 – Rocky_chess, lichess.org, 2020.

5.h3 Nf6 6.Nc3 Be7 7.Nf3 0-0 8.e4 Nd4 9.Bd3 Nf3 10.Qf3 c6 11.0-0 Be6 12.a4 Nd7 13.a5 Bg5 14.Be2 (14.Rfd1 b5 15.ab6 Nb6=) 14...Bd2 15.Rfd1 Bg5 16.Qd3 Rc8 17.Qd6 (17.Bg4 Bg4 18.hg4 Rc7=) 17...Be7–/+ 18.Qd2 Bb4 19.Bg4 (19.Ba3 Ba3 20.Ra3 Qe7–/+) 19...Bg4 20.hg4 Nc5 21.Qc2 Qe7 22.Na4 Rcd8 (22...Ba5?! 23.Ba3 b6 24.Nc5 bc5 25.Bb2+=) 23.Nc5 Qc5 24.Qb3 f6 (24...Rd1 25.Rd1 Qa5 26.Rd7–+) 25.Kh2 (25.Bc3 Bc3 26.Qc3 Rd4 27.Rd4 Qd4 28.Qd4 ed4–/+) 25...Rfe8–+ (25...Ba5?! 26.Ba3 Qb6 27.Qb6 Bb6 28.Bf8 Rd1 29.Rd1 Kf8 30.Rb1 Bf2 31.Rb7+=) 26.Kh3 (26.g5!? fg5 27.Rd8 Rd8 28.Qg3–+) 26...Ba5 27.f3 Bb4 28.Rdb1 Qf2 Threatening mate: g5 29.Rf1 Qe2 30.c5 Kh8 31.Rfd1 (31.Qb4 Rd2 32.Rg1 Rb2–+) 31...Rd1 32.Rd1 Bc5 33.Rd7 Qe1 34.Rd1 Qf2 35.Ba3 b5 (35...Be3 36.Qf7 Rg8 37.Bf8=) 36.Qe6 The mate threat is Qxe8 36...Rb8 (36...Re6 Deflection from d8 37.Rd8 A beautiful mate combination) 37.Bc5 Qc5 38.Rd6 a5 39.g5 fg5 40.Rc6 Qf8 41.Qe5 b4 42.Rc5 b3 43.Rb5 Threatening mate... how? 43...Rb5 44.Qb5 a4 45.f4 (45.g3 Qc8 46.g4 Qa8–+) 0–1. pierre – Magda, internet, 2008.

5.e3 Nf6

6.d4 ed4 7.ed4 d5 8.Nf3 Bg4 9.c5 Be7 10.Nbd2 0-0 11.Bd3 Bh5 12.0-0 Bg6 13.Be2 Ne4 14.Ne5 Ne5 15.de5 Nd2 16.Qd2 f6 17.e6 Bf5 18.Qe3 Qc8 19.Rfe1 Be6 20.Bd3+– Kf7 21.Bh7 Rh8 22.Qd3 Kf8 23.Re3 Bf7 24.Rae1 Bd8 25.Bg6 Qd7 26.Qd5!! (26...Bg6 27.Qd7 Be7 28.Qe7 Kg8 29.Rd1 Re8 30.Rd8 Rh6 31.Bf6 Bf7 32.Re8 Kh7 33.Rh8 Kg6 34.Rg3 Kh5 35.Qe2#) 1–0. Djukic,Zeljko – Grigorian,Levon, URS, 1967.

6.d4 ed4 7.ed4 d5 8.Nf3 Bg4 9.c5 Be7 10.Be2 0-0 11.0-0 Ne4 12.Nbd2 f5 13.h3 Bf3 14.Bf3 Bf6 15.Nb1 a5 16.Be4 fe4 17.Re1 ab4–+ 18.ab4 Nb4 19.Ra8–/+ Qa8 20.Qb3 Nc6?? 21.Qd5+= Kh8 22.Qe4 Qa2 23.d5 Qb2= 24.dc6 Bd4 25.Re2+= Bf2 26.Kh2 Qd4 27.Qd4+– Bd4 28.cb7 Bc5 29.Rb2 Bd6 30.g3 c5 31.Kg2 Kg8 32.Rb6 Be5 33.Nd2 Rb8 34.Rb5 Bf6? 35.Nc4+– Be7 36.Ne5 Bd6 37.Nc6 Re8 38.b8Q Bb8 39.Nb8 c4 40.Nc6 Re2 41.Kf3 Rc2 42.Ne5 Kf8 43.Ke3 Rc3 44.Kf4 Rb3 45.Rc5 c3 46.Ke3 Ra3 47.Kd4 c2 48.Nd3 Ra2 49.Nc1 Ra4 50.Kd3 Ra3 51.Rc3 (51...Rc3 52.Kc3+–) 1–0. Wall,Bill – Pennell,Gary, Taylorsville, NC, 1975.

6.d4 ed4 7.ed4 Ne4 8.Bd3 Qe7 9.Ne2+/– Qh4 10.0-0 Ng5? 11.f4+– Bh3 12.fg5 Qg5 13.Nf4 Bg4 14.Qe1 Be7 15.Nd5 0-0 16.Bc1 Qh4 17.g3 Qh3 18.Ne7 Ne7 19.Qe7 Rae8 20.Qh4 Qh4 21.gh4 Be2 22.Be2 Re2 23.Nc3 Rc2 24.Rf3 Re8 25.Bf4 h6 26.Rc1 Rc1 27.Bc1 Re1 28.Rf1 Rf1 29.Kf1 f5 30.Nd5 Kf7 31.Nc7 Kg6 32.Ne8 Kh5 33.Nd6 (33...a5 34.c5 ab4 35.ab4+–) 1–0. marus – MasterMater69, internet, 2001.

6.Be2 h6 7.Nf3 Bd7 8.d4 ed4 9.ed4 Be7 10.d5 Nb8 11.0-0 0-0 12.Nbd2 Bf5 13.Nd4 Bg6 14.N2f3 c6 15.Bd3 c5 16.Bg6 fg6 17.Nc2 Nh7 18.Qd3 Qe8 19.Qc3 Bf6 20.Qb3 Bb2 21.Qb2 Qe4 22.Ne3 Nd7 23.Nd2 Qf4 24.g3 Qf6 25.Qb3 Ne5 26.Ne4 Qe7 27.Nd2 Nf3 28.Nf3 Rf3 29.Rae1 Qf6 30.Ng4 Rb3 31.Nf6 Nf6 32.Re7 cb4 33.Rb7 Ra3 34.Rb4 a5 35.Rb6 Rc3 36.Rd6 Rc4 37.Kg2 Rd4 38.h4 Rd5 39.Rd5 Nd5 0–1. jura1946 – erdemsb, kurnik, 2012.

6.Nf3 Bg4 7.Be2 e4 8.Nd4 Nd4 9.Bg4 Ng4 10.Bd4 Ne5 (10...Qh4 11.Qe2 c5 12.Bc3+=) 11.0-0 Qg5 12.Be5 de5 13.Qa4 c6 14.b5 Qg6 15.Nc3 Bc5 16.bc6 bc6 17.Qc2 (17.Qa5!? Bd6 18.Rfb1+=) 17...f5+= 18.Na4 Ba7 (18...Be7!?=) 19.c5+= 0-0 20.Qc4 (20.Rfd1 Kh8=) 20...Qf7 21.Rfc1 (21.Qa6!? Qd5 22.Nb6 Bb6 23.Qb6=) 21...Qc4–/+ 22.Rc4 Rfd8 23.Ra2 ½–½. Schwichtenberg,Juergen (1670) – Glaser,Heinz Alfred (1680), Wch Seniors, 2003.

6.Nf3 Bg4 7.Be2 e4 8.Nd4 Be2 9.Nc6 Bd1 10.Nd8 Rd8 11.Bf6 gf6 12.Kd1 Bg7 13.Nc3 f5 14.Kc2 c6 15.Rad1 d5 (15...Rg8=) 16.cd5 cd5 17.d4 Rg8 18.Rd2 Bf6 19.g3 Ke7 20.Kb3 Ke6 21.Na4 Be7 22.Rc1 b5 (22...Rc8!? 23.Nc5 Bc5 24.dc5 h5+=) 23.Nb6+/– Rc8?? (better is 23...h5+/–) 24.Rc8+– (24.Rc8 Rc8 25.Nc8+–) 1–0. Anonymous – tayh, internet, 2011.

6.Nf3 Bg4 7.h3 Bh5 8.d3 Be7 9.g4 Bg6 10.Nh4 d5 11.g5 Nh5 12.cd5 Qd5 13.Rg1 Qd7 14.Nd2 h6 (Better is 14...Bd6!?+=) 15.Ng6+– fg6 16.Bg2 Bg5 17.Qg4 Qd3? (Better is 17...Nf6 18.Qc4 0-0-0+–) 18.Be4 Qd6 19.h4 Nf6 20.Bg6 Kd8 21.Qh3 Nd5 (21...Ng8 22.Bf5 Nge7+–) 22.Be4 (22…Bf6 23.Nc4+–; 22.hg5?! Qg6 23.Nb3 Ke7+/–) 1–0. Luzuriaga,Norberto Horacio – Welti,Manfred, b4/03/14, 2003.

6.Nf3 h6 7.Be2 Be6 (7...e4 8.Nd4=) 8.d3 (8.d4 ed4 9.Nd4 Nd4 10.Qd4 d5+=) 8...Qe7 (8...Be7 9.0-0=) 9.Nc3 Na7 (9...g5 10.d4 ed4 11.Nd4 Nd4 12.Qd4+=) 10.0-0 g5 11.h3 (11.d4 g4 12.Nd2 Bg7+/–) 11...g4= 12.hg4 Bg4 13.Nh4 Be6 14.e4 (14.d4 Rg8=) 14...Rg8 (14...Ne4 15.de4 Qh4 16.f4–/+) 15.Nd5 (15.Nf5!? Bf5 16.ef5=) 15...Nd5–/+ 16.cd5 Bh3 (16...Bd5 17.Nf3 Bc6 18.Re1–/+) 17.g3 (better is 17.Kh2!? Bd7 18.Nf3=) 17...Bf1–/+ 18.Bf1?? (18.Kf1 c6–/+) 18...0-0-0 (18...Qh4 19.Rc1 Qe7 20.Bh3–+) 19.a4?? (better is 19.Nf5 Qf6 20.d4+=) 19...b6 20.Ng2 Qg5 21.Qe2 f5 22.ef5 Qf5 23.d4 Kb7 24.Qa6+/– Kb8 25.de5 de5 26.a5 b5 27.Bb5 Rd5?? 28.Bc6 Nc6+= 29.Qc6 e4?? 30.a6+– Rg6 31.Qb7 1–0. Fournier,Frederic (1880) – cito54, Active, 2008.

4.c4 Nf6

5.b5 ab5 6.cb5 Ne7 7.Be5 d6 (7...Ng6 8.Bc3+=) 8.Bb2 (8.Bf6 gf6 9.d4 d5+–) 8...Bd7 (8...Ng6 9.Nf3+=) 9.e3 (9.Bf6 gf6 10.e3 d5+–) 9...h6 (9...Ned5 10.Nf3+–) 10.Nf3 Ra5 (10...Ned5 11.Be2+–) 11.Nc3 (11.Bc3 Ra8+–) 11...c6 (11...d5 12.Be2+–) 12.a4 Ned5 (12...Ng6 13.d4+–) 13.Bc4 (13.Be2 Qe7+–) 13...Nc7 14.Qb3 Qa8?? (better 14...d5 15.bc6 bc6+–) 15.Bf7+– Kd8 (15...Ke7 16.Nh4 d5 17.Bd5+–) 16.b6 (better 16.Nh4!? Be8 17.Ng6 Rg8+–) 16...Ncd5 (16...Na6 17.d4+–) 17.Nd5 Nd5 18.e4 (18.Nh4 Ne7+–) 18...Nf4 19.0-0 Qa6 (19...Qc8 20.Bc3 Ra8 21.Nh4+–) 20.e5 (better 20.Bc4 Qa8+–) 20...de5? (better 20...d5+–) 21.Be5 (better 21.Ne5!? Bd6 22.Nc4 Be7 23.Na5 Qa5+–) 21...Nd5 22.Bd5 (better 22.Nh4 Ne7 23.Bd6+–) 22...cd5 (22...Rd5 23.Rfe1 h5+–) 23.Bc7 Ke8 (23...Kc8 24.Ne5 Be6+–) 24.Rfe1 Be7 (24...Kf7 25.Ne5 Kg8 26.Nd7 Qc4+–) 25.Qe3 Kf8 26.Qe7 Kg8 27.Qd7 (27.Be5 Qf1 28.Rf1 Rh7 29.Qd8 Kf7 30.Qd7 Kg6 31.Qe6 Kh5 32.g4) 27...Qd3 (27...Qf1 28.Kf1 d4 29.Re7 Rg5 30.Ng5 hg5 31.Rg7 Kf8 32.Bd6) 28.Be5 (28.Qe8 Kh7 29.Ng5 hg5 30.Qh5 Kg8 31.Re8) 28...Qg6+– 29.Bg7! Qg7 (29...Qg7 30.Re8 Mate attack) 30.Re8 Kh7 31.Re7 (31.Qf5 Qg6 32.Re7 Kg8 33.Qg6 Kf8 34.Qg7) 31...Qe7 32.Qe7 Kg6 (32...Kg8 33.Ne5 Rh7 34.Qe8 Kg7 35.Qf7 Kh8 36.Qf8) 33.Re1 (33.g4 h5 34.Ne5 Kh6 35.g5) 33...Ra4 (33...Rf8 34.Re6 Rf6 35.g4 Re6 36.Nh4) 34.Re6 Kf5 (34...Kh5 35.Qf7 Kg4 36.h3) 35.Qf6 (35.Qf7 Kg4 36.h3) 35...Kg4 36.h3 Kh5 37.Re5 (37.Qe5) 1–0. kovacic (2275) – king_slayer (1690), ChessWorld.net, 2011.

5.d3 d6 6.e3 Be7 7.h3 (7.Nf3 0-0=) 7...0-0 8.Nd2 h6 (8...Ra7 9.Ngf3=+) 9.Ne2 (9.Ngf3 Bf5=) 9...d5 10.cd5 Nd5 11.Be5?? (better 11.d4 ed4 12.Nd4 Nd4 13.Bd4=) 11...Ne5–+ 12.d4 (12.Nd4–+) 12…Nd3 0–1. petrobbo (2080) – Mako7 (2375), ChessWorld.net, 2013.

5.d3 d6 6.h3 Be7 7.e3 0-0 8.Be2 Be6 (8...Bd7 9.Nf3=) 9.Nf3= e4 (9...b6 10.0-0=) 10.de4 Ne4 11.Bd3 Bf6 12.Qc2 White plans c5 12...Bb2 13.Qb2 Ng5 14.Qe2 (14.Nbd2 f5=) 14...Re8 (14...Nf3!? 15.Qf3 Ne5–/+) 15.Nbd2 d5 16.c5 (16.Rd1 dc4 17.Nc4 Nf3 18.Qf3 Qg5=) 16...d4 17.e4 (17.Rd1 Bd5=+) 17...Nf3 (17...Qf6 18.Rb1=+) 18.Nf3= Qe7 19.0-0 Rad8 20.Rac1 Bf5 21.Rfe1 Qf6 22.Qd1 (22.Rcd1 Bg6=) 22...Bd7 (22...Bg6 23.Qc2=+) 23.Rc2 Ne5 24.Ne5 (24.Nd4?? Ba4 25.Be2 Bc2 26.Qc2 Rd4–+) 24...Re5 25.f4 (better 25.Rd2 Qg5 26.Bc4=) 25...Qf4–/+ 26.Rf2 Qg5 (26...Qg3 27.Rf3 Qg6 28.Qd2–/+) 27.Qf3 (27.Bc4 Be6 28.Be6 Re6–/+) 27...Be6–+ 28.Rc2 a5 29.Rb2 ab4 30.ab4 b6 31.c6 b5 32.Kh2 (32.Ra1 Bc4–+) 32...Qe7 (32...Bc4 33.Bc4 bc4 34.Rc2–+) 33.Qe2 (better 33.Rc1–+) 33...Bd5 34.Qc2 Qd6 35.Rc1 (35.g3 Bc6 36.Rc1 Bb7–+) 35...Re4 36.Kg1 Re6 (36...Re3 37.Qb1–+) 37.Bb5? (better 37.Bh7 Kf8 38.Bd3–+) 37...Bg2!! 38.Kg2 Decoy theme: g2 (38.Qg2 Decoy to g2 38...Rg6 A pinning theme) 38...Qd5 Theme: Double Attack 39.Kh2 Qb5 40.Qc5 (40.Qg2 Rg6 41.Qe2–+) 40...Re2 41.Re2 Qe2 42.Kg1 Rd6 43.Qc2 (43.Qd6 Qe3 44.Kg2 Qd2 45.Kf3 cd6–+) 43...Rg6 44.Kh1 (44.Qg6 hg6 45.Ra1–+) 44...Qf3 45.Kh2 Qg3 46.Kh1 0–1. petrobbo (2015) – wasteofspace (2145), ChessWorld.net, 2011.

5.d3 d6 6.h3 Be7 7.g3 0-0 8.Bg2 Be6 9.e3 e4 10.Nc3 ed3 11.Bc6 bc6 12.Qd3 Re8 (12...a5 13.b5–/+) 13.Nf3 Qd7 14.g4 d5 (14...a5 15.b5=) 15.c5 a5 (15...Reb8 16.g5 Nh5 17.Qd1=) 16.Ne5+= Qc8 17.Nc6 ab4 18.Ne7 (worse 18.Nb4 Bc5 19.Rc1 Qb7=+) 18...Re7 19.ab4 Ra1 20.Ba1 Qb7 21.Qd4 c6 22.0-0 Re8 23.Bb2 (23.g5!? Bh3 24.gf6 Bf1 25.Kf1 Qa6 26.Ne2+–) 23...Rb8+= Attacks the backward pawn on b4 24.Ba3 (24.Rb1 h5+= (worse 24...Qb4 25.Ba1 Qb1 26.Nb1 Rb1 27.Kg2+–)) 24...h5= 25.f3 Qc7 26.Ne2 Qe7 27.Bb2 Ne8 28.Qe5 (28.Qf4!? Qb7 29.Bc3+–) 28...Rb4= 29.Bd4 (29.Nf4 hg4 30.hg4 Nf6=) 29...hg4 30.fg4 f6 31.Qh5 Bf7 32.Qf5 Nc7 33.Nf4 Ne6 Attacks the isolani on c5 34.Ne6 Qe6 (34...Be6 35.Qf4=) 35.Kg2 (35.Qe6 Be6 36.Kf2 Kf7=) 35...Qf5 (better 35...Qe8!?=+) 36.Rf5 (36.gf5!? Bh5 37.Rf2=) 36…Bg6=+ ½–½. petrobbo (1960) – wasteofspace (2260), ChessWorld.net, 2012.

5.d4 ed4=+ 6.Bd4 Nd4 7.Qd4 Be7 8.Nc3 c5 9.bc5 0-0 10.e3 Qa5 The isolani on c5 becomes a target 11.Qd2 Qc5 Attacks the isolani on a3 12.Bd3 Re8 13.Nge2 d6 (13...b6 14.0-0=+) 14.Qc2 (14.0-0 Rb8=) 14...h6 (14...Be6 15.Ne4 Ne4 16.Be4=+) 15.0-0 Be6 Exerts pressure on the isolated pawn 16.Na4 Qc7 17.Nd4 Bd7 (17...Rab8 18.Qb3=) 18.Rfb1+= Ba4 19.Qa4 Nd7 20.Qc2 Bf6 21.Be4 Attacks the backward pawn on b7 21...Rab8 22.Bd5 (22.Rb4 Nc5 23.Bd5 Be5+=) 22...Nb6 (22...Bd4 23.ed4 Nf6 24.Qf5=) 23.Qd3 Nd5 (23...Rec8 24.Rb4=) 24.cd5= Qc5 (24...Rec8 25.Rd1=) 25.Nb3 Qc3 26.Qc3 Bc3 27.Ra2 Rbc8 28.g3 Re4 29.Rc2 Rec4 30.Rbc1 b5 31.Kf1 Bf6 (31...Bb2 32.Rb2 Rc1 33.Nc1 Rc1 34.Ke2=+) 32.Rc4 Rc4 33.Rc4 bc4 34.Nd4 Bd8 (34...g5 35.h3+=) 35.Nc6 (35.Ke2 g6+=) 35...Bf6 36.Nd4 (36.Ke2 Bb2+=) 36...Bd8+– 37.Ke2 Kh7 (37...g6!?+–) 38.Nc6 Bf6 39.Kd2 (39.Na5 c3 40.Nc4 Kg6+–) 39...Bb2+– 40.a4 Kg6 41.Kc2 c3 (41...Bf6!?+–) 42.Nb4 (42.Nb4 Kf5 43.Na6+–) 1–0. petrobbo (2010) – wasteofspace (2165), ChessWorld.net, 2011.

5.e3 d6 6.Be2 Be7 7.Nc3 0-0 8.Nf3 Be6 9.0-0 Qd7 10.Ng5 h6 11.Ne6 fe6 12.Qc2 b5? (better is 12...d5!?+=) 13.cb5+– ab5 14.Bb5 d5? (better is 14...Rab8+–) 15.Nd5! ed5 (15...Nd5 16.Bc6) 16.Bc6 (16.Qc6?! Qd6+–) 16...Qg4 (16...Qd6 17.Ba8 Ra8+–) 17.Ba8 Ra8 18.Qc7 Qe6 19.Qe5 Qe5 (19...Qd7 20.Qg3+–) 20.Be5 Ng4 21.f4 Rf8 (21...Kf7 22.h3 Nf6 23.Rfc1+–) 22.b5 Bd8 23.a4 Ba5 24.Ra2 Bb6 (24...Kf7 25.h3 Nf6 26.Rb1+–) 25.a5 Bc5 26.b6 Ra8 (26...g5 27.d4 Bb6 28.ab6 Ne5 29.de5+–) 27.b7 Re8 1–0. Deline,R – Kepka,V, Kirkland Lake, 1988.

5.e3 Be7 6.b5+= Na5 7.ba6 Ra6 8.Be5 d6 9.Bf6 Bf6 10.d4 c5 11.Nf3 cd4 (11...Bg4 12.h3 Bf3 13.Qf3 cd4 14.Nd2=) 12.Nd4+= Nc6 13.Nc3 (13.Nc6 bc6 14.Ra2 Qa5 15.Qd2 Bf5 16.Qa5 Ra5=) 13...Qa5 (13...Nd4 14.ed4 0-0 15.Be2=) 14.Qd2 Nd4 15.ed4 Bg5 16.Qc2 0-0 (16...Bf6 17.Qe2 Kd8 18.Qd2=) 17.Bd3 (17.Kd1 Bh4 18.f3 Bf6=) 17...Re8 (17...Bf6 18.Rd1 g6 19.Be4+=) 18.Kf1+= Bf6 19.Bh7 Kf8 20.Rd1 g6 21.Nd5 Bd4 22.Nb4 Rb6 23.Qd3? Qh5–+ 24.Qd2 Bc5 25.Bg6 Qg6 26.Qc3 Qh5 Threatening mate... how? 27.Rd2 Qh4 28.h3 Re4 29.g3 Bh3 30.Kg1 Re1 31.Kh2 0–1. b4_player – opponent, gamecolony.com, 2007.

5.e3 Be7 6.Nf3 e4= 7.Nd4 0-0 (7...Nd4 8.Bd4 a5 9.ba5=) 8.Be2 (8.d3 a5 9.ba5 Ra5 10.de4 Ne4=) 8...d5 (8...Nd4 9.Bd4 a5 10.ba5 Ra5 11.d3=+) 9.cd5 (9.Nc6 bc6 10.d3 Rb8=) 9...Qd5 10.Nc3 Qg5 11.Nc6 bc6 12.g3 Bh3 (12...c5 13.b5=) 13.Bf1 (13.Qc2 Qh6 14.Bf1 Bf1 15.Rf1 c5 16.Ne4 cb4 17.Nf6 Bf6 18.ab4 Bb2 19.Qb2 Qd6=) 13...Qh6 (13...Bf1!? 14.Rf1 c5 15.bc5 Bc5=+) 14.Qc2= Rfe8 (14...Bf1 15.Rf1 c5 16.Ne4 cb4 17.Nf6 Bf6 18.ab4 Bb2 19.Qb2=) 15.Ne4 Ne4 16.Qe4 Bf1 17.Kf1 Bf6 (17...c5 18.Bc3=) 18.Qc2+= Rad8 (18...Bb2!? 19.Qb2 c5+–) 19.Bf6 Qf6 20.Kg2 h6 (20...Qe6 21.Rhd1+–) 21.d4+– Rd5 22.Rac1 c5 23.dc5 Qc6 24.e4 Rde5 25.f3 Qb5? (better 25...f5!?+–) 26.Rhd1+– Kh8 (26...f5 27.Qc4 Kf8 28.Rd4+–) 27.Qd3 (27.Qc4 R8e7+–) 27...Qa4 28.Rd2 Qc6 (28...f5 29.ef5 Re3 30.Qc4+–) 29.Rc4 Qg6 30.Rd4 Rh5 (30...a5+–) 31.Rd8 Rd8 32.Qd8 Kh7 33.Qc7 Qe6 (33...f5 34.Qe7 f4 35.g4+–) 34.h4 (better 34.Qd7 Qd7 35.Rd7 Re5+–) 34...g5 (34...Qc4 35.Qf4 Qb3 36.c6+–) 35.Qd7 (35.Qd7 gh4 36.Qe6 fe6 37.gh4 Rh4 38.c6+–) 1–0. Hilbert,Stephan J (1800) – Gadhesariya,Divyesh (1800), FICGS, 2013.

5.Nf3 e4 6.Nd4 Bd6 7.g3=+ (7.c5 Be7 8.d3 ed3 9.Qd3 0-0 10.Nd2 Ne5 11.Qc2; 7.d3 ed3 8.Qd3 0-0 9.Nf5 Be5 10.Be5 Ne5 11.Qg3) 7...0-0 8.Bg2 a5 9.Nb5 Be5 10.Be5 Ne5 11.N1c3.

5.Nf3 e4 6.Nd4 Ne5 7.e3 (7.Qc2 d6 8.f4 ef3 9.Nf3 a5 10.Ne5 de5 11.Be5) 7...d6 8.Nc3 Be7 9.f4 ef3 10.Nf3 Be6 11.Ne5.

5.Nf3 e4 6.Nd4 Be7 7.Nf5=+ (7.e3 0-0 8.Nc3 Nd4 9.ed4 d5 10.Qc2 dc4 11.Bc4; 7.d3 ed3 8.Qd3 Ne5 9.Qb3 0-0 10.Nc3 Re8 11.e3) 7...0-0 8.d3 (8.Nc3 d6 9.Ne3 b5 (9...Be6 10.g3 d5 11.cd5) 10.cb5 ab5=+ 11.Nb5) 8...d6 (8...d5 9.Ne7 (9.de4 dc4 10.Qd8 Bd8 11.Ng3) 9...Qe7 10.cd5 Nd5 11.Nc3–/+ –1.14/9 (11.de4 Qe4 12.Nd2–/+)) 9.Ne7 (9.de4 Ne4 10.Ne7 Qe7 11.Nc3) 9...Qe7 10.e3 (better 10.Nc3 ed3 (10...Ne5 11.e3) 11.Qd3–/+; 10.de4 Ne4 11.Nc3) 10...a5 (10...Bf5!?–/+ 11.Nc3; 10...Bg4 11.Qc2) 11.b5=+ (11.Nd2–/+) 11...Ne5 (11...Bg4 12.Qc2 ed3 13.Bd3=) 12.d4= Bg4 (12...Neg4 13.Nc3 Nh6 14.Qc2=) 13.Qc2 Ned7 14.h3 Bh5 15.Nc3 h6 (15...Nb6 16.Ne2+=) 16.Ne2 Bg6 17.Nf4 Bf5 18.g4 Bh7 19.Be2 (19.Bg2 Nb6=) 19...g5 20.Ng2 Qe6 21.h4 c6 (21...d5 22.0-0-0=) 22.hg5+= hg5 23.bc6 (23.Rc1 Rfc8 24.bc6 bc6=) 23...bc6 24.a4 (24.Rh6 d5=) 24...Rfb8 (24...Rab8 25.Rh6=) 25.Bc3 c5 (25...Nb6 26.Bd2=+) 26.Qd1 Qe7 (26...Rb7 27.Kf1=) 27.Qd2 (27.Kf1 Rb7+=) 27...Qe6= 28.Rd1 Rb3 (worse 28...Ng4 29.dc5 Nge5 30.Qd6+–) 29.Rc1 (29.Ba5 Ng4 30.Bc7 Ndf6 31.dc5 dc5=) 29...Rab8 30.Ba5 (30.Qd1!?=) 30...Ng4–/+ 31.Qd1 Ndf6 32.Bc7 R8b4 33.a5 Rd3 (33...Ra3 34.dc5 Qf5 35.0-0 dc5 36.f3 Ne3 37.Qd8 Kg7 38.fe4=) 34.Bd3=+ ed3 35.0-0 (35.a6 Be4 36.d5 Qf5–+) 35...Bf5 36.Bd8 (36.dc5!? dc5 37.a6–/+) 36...Ne4 (36...Rc4? 37.Rc4 Qc4 38.f3 cd4 39.fg4 Bg4 40.Qa1+–) 37.f3 Ngf2 38.Rf2 Nf2 39.Qd2 (39.Kf2 Rb2 40.Kg3–+) 39...Nh3–/+ 40.Kh2 d5 (40...Qh6 41.Kg3–/+) 41.dc5 Rc4 42.Bc7 Qh6 43.Rc4 (better 43.Kg3!?–/+) 43...dc4–+ 44.Kg3 (44.Qb4 c3! 45.Qb8 Kh7–+) 44...g4 45.Nh4 Bc8 0–1. Sternik,Ryszard (1765) – Inving,Yugi, FICGS, 2008.

5.Nf3 e4 6.Nd4 g6 7.d3 (7.e3 Be7 8.Nc3 Nd4 9.ed4 a5 10.ba5 0-0 11.Be2; 7.g3 Ne5 8.Qb3 c5 9.Nc2 Qc7 10.Nc3 b5 11.cb5) 7...ed3 8.Qd3 Ne5 9.Qb3 Bh6 10.Nf5 gf5 11.Be5.

4.d3 d5

5.Nd2 b5 6.Ngf3= f6 (6...d4 7.c3 dc3 8.Bc3=) 7.g3 (7.e3 Bg4=) 7...d4 (7...a5 8.c3=+) 8.Bg2 Nge7 9.0-0 (9.c3 dc3 10.Bc3 Nd5=) 9...Bg4 (9...Nd5 10.Qc1=) 10.c3+= dc3 11.Bc3 Qd7 12.Re1 (12.Qc2 Nd5+=) 12...Nd5= 13.Bb2 (13.Qc2 a5=) 13...Be7 (13...a5 14.ba5 Be6 15.a4=) 14.Rc1 (14.Qc2 a5 15.h3 Bf3 16.Bf3 Nd4 17.Bd4 ed4 18.ba5 Ra5 19.Bd5 Qd5 20.Qc7 Qd8+–) 14...Qd6 (14...a5 15.ba5 Ra5 16.Qc2=) 15.Ne4 (15.Qc2 Bd7+–) 15...Qe6+= 16.Qc2 (16.Nc5 Bc5 17.Rc5 Rd8+–) 16...Nd8 17.Nc5 Bc5 18.Qc5 c6 19.Nd2 (better 19.e4 Ne7 20.d4+=) 19...Bf5?? (better 19...a5 20.ba5 Ra6+=) 20.e4+– Rc8 (20...Nb7 21.ed5 (21.ef5?! Nc5 22.fe6 Nd3+–) 21...Nc5 22.de6 Nd3 23.Bc6 Ke7 24.Ba8 Nc1 25.Bc1 Ra8 26.f4 ef4 27.gf4+–) 21.ed5 (better 21.ef5 Qe7 22.Bd5 Qc5 23.Rc5+–) 21...cd5 22.Qc8 Qc8 23.Rc8 Bc8 24.Bd5 (24.f4 Be6 25.fe5 f5+–) 24...Be6 (24...Kd7 25.Ne4+–) 25.Bg2 (25.Be6 Ne6 26.f4 Kf7 27.fe5 Rd8+–) 25...0-0 26.d4 (26.f4 ef4 27.gf4 Re8+–) 26...ed4 27.Bd4 Bc4 (27...Bf7+–) 28.Nc4 bc4 29.Bd5 Kh8 (29...Nf7 30.Bc4 g5 31.Bc5+–) 30.Bc4 (better 30.Bc5!? Rg8 31.Bg8 Kg8 32.Re8 Kf7 33.Rd8 c3+–) 30...Nc6 31.Bc5 Ne5 (31...Rb8 32.f4 h5+–) 32.Re5 Ra8 33.Re6 h6 34.Ba6 Kh7 35.a4 Kg6 36.a5 (36.Bd3 Kf7 37.Re7 Kg8+–) 36...Kf5 37.Rd6 Ke5 38.Bb7 (38.Bc4 g5 39.f3 Re8 40.Rd5 Ke6 41.Rd8 Kf5 42.Bd3 Ke6 43.Re8 Kd7 44.Re7 Kd8 45.a6 Kc8 46.a7 g4 47.a8Q) 38...Ra7 39.Rd5 Ke6 40.Ba7 Kf7 41.a6 g5 42.Be3 Kg6 (42...Ke7 43.a7 f5 44.Bc5 Ke6 45.Rd6 Kf7 46.Bd5 Kg7 47.a8Q g4 48.Qg8) 43.Bc8 h5 (43...Kg7 44.Bf5 Kh8 45.a7 h5 46.Rd7 Kg8 47.a8Q) 44.a7 (44.Bf5 Kf7 45.Rd7 Ke8 46.a7 g4 47.a8Q) 44...h4 (44...f5 45.Bf5 Kf7 46.Bg5 Kf8 47.a8Q Kf7 48.Rd7) 45.Bf5 Kh5 (45...Kh6 46.Rd7 hg3 47.Rh7) 46.g4 (46.a8Q hg3 47.Qh8) 46...Kh6 47.a8Q (47.Rd7 h3 48.Rh7) 47...Kg7 1–0. Santana,Expedito (1620) – Rosa,Jefferson Luiz, Curitiba Brazil, Regional Sul Champions, 2017.

4.d3 d6

5.Nd2 Be7 6.Ngf3 (6.g3 Nh6 7.Ngf3 0-0 8.Bg2 Nf5 9.0-0 Be6 10.c4 Qd7 11.Qc2) 6...Nf6 7.g3 0-0 8.Bg2 h6 9.0-0 Be6 10.Nc4 Qd7 11.Qd2.

5.Nd2 Nf6 6.Ngf3 Be7 7.g3 0-0 8.Bg2 h6 9.0-0 Be6 10.Nc4 Qd7 11.Qd2.

5.Nd2 Nf6 6.g3 Be7 7.Bg2 h6 8.Ngf3 Be6 9.0-0 Qd7 10.c4 Bh3 11.b5 Bg2 (better 11...ab5!? 12.Bh3 Qh3 13.cb5 Nd8=) 12.bc6+– Qc6? (better 12...Qh3!? 13.cb7 Rb8 14.Qa4 Kd8+–) 13.Kg2+– e4? (better 13...0-0+–) 14.de4 Ne4 15.Nd4 Nf2 (15...Qb6 16.Ne4 Qb2 17.Qa4 Kf8+–) 16.Kf2 (16.Nc6?! Nd1 17.Rad1 bc6 18.Bg7 Rh7+–) 16...Qd7 17.Kg2 0-0 18.Nf5 Bf6 (18...g6 19.Nh6 Kh7 20.Nf7 Qe6+–) 19.Bf6 gf6 (19...g6 20.Nh6 Kh7 21.Rf4 Qc6 22.Nf3+–) 20.e4 Kh7 21.Qh5 (21.Qh5 Qf5 22.Rf5 Rg8 23.Rf6 Rg6 24.Rf7 Kg8 25.Qg6 Kh8 26.Qg7) 1–0. fryckh – jaqufe, internet, 2017.

5.Nd2 Nf6 6.g3 Bf5 7.Bg2 g6 8.Ngf3 Bh6 9.0-0 0-0 10.c4 Qe7 11.Qc2.

5.Nf3 Bd7 6.g3 (6.Nc3 Nf6 7.g3 d5 8.Bg2 Bd6 9.0-0 0-0 10.Na4 Re8 11.Re1; 6.Nbd2 Nf6 7.e4 Be7 8.Be2 0-0 9.0-0 h6 10.h3 Be6 11.d4; 6.e4 Nf6 7.Nbd2 g6 8.g3 Bh6 9.Bg2 0-0 10.0-0 b5 11.Nb3; 6.e3 Nf6 7.Be2 g6 8.0-0 Bg7 9.c4 0-0 10.Nc3 e4 11.Ne4) 6...Be7 7.Nbd2 Nh6 8.Bg2 0-0 9.0-0 Nf5 10.c3 d5 11.c4.

5.Nf3 Be7 6.g3 (6.Nbd2 Nf6 7.g3 0-0 8.Bg2 h6 9.0-0 Bg4 10.Nc4 Be6 11.e4; 6.Nc3 Nf6 7.g3 d5 8.Bg2 0-0 9.0-0 h6 10.e4 d4 11.Nd5) 6...Nf6 7.Bg2 0-0 8.0-0 h6 9.Qd2 Bg4 10.Nc3 d5 11.Na4.

5.Nf3 Nf6 6.g3 (6.Nbd2 Be7 7.g3 0-0 8.Bg2 h6 9.0-0 Be6 10.Nc4 Qd7 11.Qd2) 6...Be7 7.Bg2 0-0 8.0-0 Be6 9.c4 Qd7 10.Nc3 h6 11.Rc1.

5.Nf3 g6 6.g3 (6.Nbd2 Nf6 7.g3 Bh6 8.Bg2 0-0 9.0-0 Bg4 10.c4 Qe7 11.Qc2) 6...Bh6 7.Nbd2 Nf6 8.Bg2 Qe7 9.0-0 0-0 10.c4 Rd8 11.Ne4.

5.Nf3 h6 6.d4 (6.g3 Nf6 7.Nc3 Be7 8.Bg2 0-0 9.0-0 Bg4 10.Qd2 d5 11.Na4; 6.Nc3 Nf6 7.d4 e4 8.d5 Ne7 9.Nd2 e3 10.Nc4 Nf5 11.Ne3; 6.Nbd2 Nf6 7.e4 Be7 8.Be2 0-0 9.0-0 Be6 10.c4 Qd7 11.d4; 6.Qd2 Nf6 7.g3 Be7 8.Bg2 0-0 9.0-0 Bg4 10.c4 e4 11.Nd4; 6.e4 Nf6 7.Be2 Be7 8.0-0 0-0 9.Nbd2 Qd7 10.Nc4 Qe6 11.Qd2) 6...e4 7.d5 ef3 8.dc6 bc6 9.ef3 Qe7 10.Qe2 Nf6 11.Bf6.

5.g3 Be6 6.Nd2 (6.Bg2 Nf6 7.Nf3 Be7 8.0-0 0-0 9.c4 Qd7 10.Nc3 h6 11.Rc1; 6.Nf3 Nf6 7.Bg2 Be7 8.0-0 0-0 9.c4 Qd7 10.Nc3 h6 11.Rc1; 6.Bh3 Bh3 7.Nh3 Be7 8.Nc3 Qd7 9.Ng1 Nf6 10.Ne4 0-0 11.Nf3; 6.Nc3 Nf6 7.Nf3 Be7 8.Bg2 0-0 9.0-0 h6 10.d4 ed4 11.Nd4) 6...Nf6 7.Ngf3 Be7 8.Bg2 Qd7 9.Ng5 Bf5 10.e4 Bg4 11.Qb1.

5.g3 Be7 6.Nd2 (6.Nf3 Nf6 7.Bg2 h6 8.Nbd2 0-0 9.0-0 Be6 10.Nc4 Qd7 11.Qd2; 6.Bg2 Nf6 7.Nf3 0-0 8.0-0 h6 9.c4 Be6 10.Nc3 Qd7 11.Rc1; 6.Nc3 d5 7.Bg2 Nf6 8.Nf3 Bg4 9.h3 Be6 10.d4 e4 11.Ne5) 6...Nf6 7.Bg2 0-0 8.Ngf3 h6 9.Nc4 Be6 10.0-0 Qd7 11.Qd2.

5.g3 Nf6 6.Nf3 (6.Nd2 Be7 7.Bg2 0-0 8.Ngf3 h6 9.0-0 Be6 10.Nc4 Qd7 11.Qd2; 6.Bg2 d5 7.Nd2 Bg4 8.Ngf3 Bd6 9.c4 0-0 10.c5 Be7 11.Ne5) 6...Be7 7.Bg2 h6 8.0-0 0-0 9.c4 Bf5 10.Nc3 Be6 11.d4.

5.g3 g6 6.Nf3 (6.Bg2 Nf6 7.Nf3 Bh6 8.0-0 0-0 9.c4 Re8 10.Nc3 Bg4 11.Nd5; 6.Nd2 Bh6 7.Bg2 Nf6 8.Ngf3 0-0 9.0-0 Bg4 10.c4 Qe7 11.Qc2; 6.Nc3 Bh6 7.Nf3 Nf6 8.Bg2 0-0 9.0-0 d5 10.Na4 Qe7 11.d4) 6...Bh6 7.Bg2 Nf6 8.0-0 0-0 9.c4 Qe7 10.Nc3 Be6 11.Qc2.

5.g3 h6 6.Nf3 (6.c4 Be6 7.Nc3 Nf6 8.Nf3 Be7 9.Bg2 0-0 10.0-0 Qd7 11.Rc1; 6.Nd2 Nf6 7.Ngf3 Be7 8.Bg2 0-0 9.0-0 Be6 10.Nc4 Qd7 11.Qd2; 6.Bg2 Be7 7.Nd2 Nf6 8.Ngf3 0-0 9.Nc4 Be6 10.0-0 Qd7 11.Qd2; 6.Nc3 Nf6 7.Nf3 Be7 8.Bg2 0-0 9.0-0 Bg4 10.Qd2 d5 11.Na4; 6.Qd2 Nf6 7.Nf3 Be7 8.Bg2 0-0 9.0-0 Bg4 10.c4 e4 11.Nd4) 6...Nf6 7.c4 Bg4 8.Bg2 Be7 9.Nc3 0-0 10.0-0 Qd7 11.Nd5.

5.Nd2 Bf5

6.c4 Qd7 7.Bc3 Nf6 8.Qb3 (8.e4 Be6=) 8...h6 (8...Be7 9.e4 Bg4 10.Be2+=) 9.Ngf3= g5 10.g3 g4 11.Nh4 Bh7 12.b5 ab5 13.cb5 Na5 (13...Nd4 14.Bd4 ed4 15.h3+=) 14.Ba5 (better is 14.Qa4!? Qd8 15.Bg2+/–) 14...Ra5+= 15.a4 b6 (15...Ra7 16.h3+=) 16.Bg2 Be7?? (better is 16...d5=) 17.Bc6+– Kf8 (17...Qc6 18.bc6 d5 19.h3+–) 18.Bd7 Nd7 19.0-0 Nc5 20.Qc4 Bh4 21.gh4 Bf5 22.Kg2 Be6 23.f3 gf3 24.Nf3 Bc4 25.dc4 Ne4 26.Kh3 Nc3 27.Rf2 Na4 28.Nd2 Nc5 29.Raf1 Rh7 30.Rf3 Ra2 31.Rd1 Ne6 32.Ne4? Re2 33.Nf6 Rg7 34.Nh5 Rg6 35.Rdf1 Nf4! 36.Nf4 ef4 37.Rf4 Re7 38.h5 Re3 39.Kh4 Rg7 40.Rf6 Re4 41.R1f4 Rf4 42.Rf4 Ke7 43.Rf5 Rg2 44.h3 Rc2 45.Rf4 1–0. golfx – lomakon, kurnik, 2012. (=1.a3 e5 2.b4 Nc6 3.Bb2 a6)

6.e4 Be6=.

6.Ngf3 Qd7 7.g3 (7.e4 Bg4=) 7...h6 8.Bg2 Nf6 9.c4 Be7 10.b5 ab5 11.cb5 Na5 12.a4 0-0 13.Rc1 c6 14.bc6 bc6 15.Nc4 Nc4 16.Rc4 c5 (16...Be6 17.Rc3–/+) 17.0-0 (17.Be5 de5 18.Ne5 Qc7 19.Ba8 Ra8–/+) 17...Rab8 (17...Be6 18.Rc1–/+) 18.Bc3? (better is 18.Qc2!?+=) 18...Be6–+ 19.a5 Bc4 20.dc4 Qa7 21.Qa4 Bd8 22.Ra1 Nd7 23.Nd2 Ra8?? 24.Ba8+– Qa8 25.f3 Nb8+= 26.Ne4 Bc7 27.a6 Nc6 28.a7 Nd4 29.Bd4+– ed4 30.Qb5 Re8?? 31.Qd7 Rc8 32.Nd6 Bd6 33.Qd6 Re8? 34.Kf2 f6? 35.Qd7 Rc8 36.Rb1 Rf8 37.Qb7 Rd8 38.Qa8 Ra8 39.Rb7 g5 40.Rb8 Rb8 41.ab8Q Kf7 42.Qd6 Kg6 43.Qc5 f5 44.Qd4 f4 45.Qf4! gf4 46.gf4 Kf5 47.e3 h5 48.Kg3 Kf6 49.h4 Ke6 50.e4 Kd6 51.f5 Kc5 52.Kf4 Kc4 53.Kg5 Kd3 54.f6 Ke3 55.Kh5 Kf3 56.e5 Kf4 57.e6 Kf5 58.f7 Ke6 59.f8Q (59.f8Q Ke5 60.Kg6 Ke6 61.h5 Kd5 62.Qf5 Kc4 63.Qe6 Kb5 64.h6 Kc5 65.h7 Kd4 66.h8Q Kd3 67.Qhh3 Kc2 68.Qhb3 Kd2 69.Qee3#) 1–0. golfx – lomakon, kurnik, 2012.

6.g3 Qd7 7.Bg2 Nf6 8.c4 Be7 9.b5 (9.Ngf3 Bh3 10.0-0 0-0=) 9...ab5+= 10.cb5 Nd4?? (better is 10...Nd8+=) 11.Bd4+– (11.Bb7 Rb8 12.Bg2 Rb5 (12...Qb5? 13.Bd4 Qa5 14.Be3+–) 13.Bd4 ed4=) 11...ed4 12.Nb3?? c6 13.Nd4 Bg6?? 14.bc6+– Qc7 15.cb7 Rb8 16.Qa4 Nd7 17.Nc6 Qb7? 18.Nf3 0-0?? 19.0-0 Nb6? 20.Nb8?? Na4–+ 21.Rab1 Qa7 22.Nc6 Qd7 23.Ne7 Qe7 24.Rb4 Nc5 25.a4? Qe2 26.a5 Nd3 27.a6 Nb4 28.a7 Qa6 29.Nh4 Qa7 30.Ng6 fg6 31.Rb1 Qf2 32.Kh1 Nd3 33.Rd1 Ne1 34.Bh3 Nf3 35.Bg2 Qe2 36.Rf1 Nd2 37.Bd5 Rf7 38.Bf7?? Kf8 (38...Kf8 39.Bc4 Qf1 (39...Nf1?! 40.Be2 Nd2 41.Kg1–+) 40.Bf1 Nf1–+) 0–1. golfx – lomakon, kurnik, 2012. (=1.a3 e5 2.b4 a6 3.Bb2 Nc6)

6.g3 Qd7 7.Bg2 Nf6 8.e4 Bg4 9.f3 Be6 10.c3 (10.f4 ef4 11.gf4 Qe7=) 10...h6 (10...d5!?+=) 11.d4= ed4 12.cd4 Na7? (better is 12...d5=) 13.d5+– Nd5 14.ed5 Bd5 15.Ne4 0-0-0?? (15...Be6 16.Ne2+–) 16.Ne2 Re8?? 17.0-0 f5? 18.N4c3 Bc6 19.a4 b6 20.b5! ab5 21.ab5 Nb5 22.Nb5 Bb5 23.Re1 Be7? 24.f4 Bf6?? 25.Ra8# 1–0. golfx – lomakon, kurnik, 2012. (=1.a3 e5 2.b4 a6 3.Bb2 Nc6)

6.g3 Qd7 7.Bg2 Nf6 8.e4 Bg4 9.f3 Bh5 10.g4 Bg6 11.Ne2 h6 12.Ng3 Be7 13.Nf5 0-0-0 (13...Bf5 14.gf5 Nh5 15.0-0–/+) 14.Ne7 Qe7 15.c4 Nd4 16.b5 ab5 17.cb5 Nb5 18.Qa4 c6 19.Kf2 (19.d4 ed4 20.Rc1 Kd7–+) 19...h5 (19...d5–/+) 20.Qb4? (better is 20.g5!? Nd7 21.f4–/+) 20...hg4–+ 21.a4 gf3 22.Bf3 Nd4! 23.a5?? Nc2 24.Qb6 Na1 25.Ba1 Qc7 26.Bc3 Qb6 27.ab6 Bh5 28.h3 Bf3 29.Nf3 Rh6 30.Ng5 Rf8 31.Kg3 Nh5 32.Kf3 Nf4 33.h4 Nd3 34.Kg4 Nf2 35.Kg3 Nh1 36.Kg2 Rh4 37.Nf3 Rh6 38.Bd2 Rh5 39.Ng5 Rfh8 40.Be3 Rh2 41.Kg1 Ng3 42.Nf7 R8h7 43.Nd6 Kd7 44.Nc4 Ne2 (44...Ne2 45.Kf1 Ke6–+) 0–1. golfx – lomakon, kurnik, 2012. (=1.a3 e5 2.b4 a6 3.Bb2 Nc6)

6.g3 Nf6 7.Bg2 Qd7 8.Ngf3 Bg4 9.0-0 h5 10.h4 Be7 11.e4 (11.c4=) 11...d5 (better is 11...0-0!?=) 12.ed5+/– Qd5 13.c4 (13.Qe1 Qd7+/–) 13...Qe6 (13...Qd3 14.Be5 0-0-0 15.Re1+=) 14.Ne4?? (14.Qe1 Qd7+/–) 14...Nd4?? (14...Ne4 15.de4 Qc4 16.Rc1+=) 15.Nf6 Qf6= 16.Bd4 ed4 17.Qb3?? Bf3–+ 18.Bf3 Qf3 19.Rfe1 Qc6 20.Re4 Qf6?? 21.Rae1+= g5 22.c5 gh4= 23.Rh4?? Rg8?? 24.Qd5?? Qh4–+ 25.Qb7 Rd8 26.Qc7?? Qf6–+ 27.Re4 h4 28.Kf1 hg3 29.f3 Qf3 30.Ke1 Qf2 31.Kd1 Qf1 32.Kc2 Rd7 33.Qc8= Rd8 34.Qc6 Rd7 35.Qc8 Rd8 36.Qc6 Kf8 37.Qc7?? Qf2 38.Kb3 Bc5 39.bc5 Re8 40.Re8 Ke8 41.Qc8?? Ke7–+ 42.Qg8 Qe3?? 43.Qg4?? Qd3 44.Kb4 Qb5# 0–1. golfx – adam2201, kurnik, 2011.

6.g3 h6 7.Bg2 f6 (7...Nf6 8.Ngf3=) 8.c4 Be7 9.b5 (9.Ngf3 Qd7+=) 9...ab5= 10.cb5 Nd4? (better is 10...Na5=) 11.Bd4+– ed4 12.Qb3 (12.Bb7 Ra7 13.Bd5 Bf8+–) 12...Rb8 13.Ndf3 (13.Bd5 Kf8+–) 13...Qd7? (better is 13...c5 14.bc6 bc6+/–) 14.Nd4+– Bg6? 15.Qe6 Rd8? 16.Qd7 Rd7 17.Ne6 Bf7 18.Ng7 Kf8 19.Nf5 h5 20.Bb7 c5 21.bc6 Rc7 22.Ne7 Re7 23.Nf3 Nh6 24.a4 Kg7 25.a5 Be8 26.a6 Nf5 27.a7 Rb7 28.cb7 Bc6 29.b8Q Rb8 30.ab8Q Bf3 31.ef3 Nd4 32.Qa7 (32.Qa7 Kh6 33.Qd4 Kg7 34.Ra7 Kg6 35.Qe4 f5 36.Qe6 Kg5 37.h4#; 32.Ra7 Kh6 33.Qg8 Nf3 34.Kd1 Nh2 35.Qg7#) 1–0. golfx – lomakon, kurnik, 2012. (=1.a3 e5 2.b4 a6 3.Bb2 Nc6)

4.d3 Nf6

5.Nd2 d5 6.Ngf3 (6.c4 d4 7.Ngf3 Bf5 8.b5 ab5 9.cb5 Na7 10.a4 Bd6 11.g3) 6...Bd6 7.g3 (7.c4 d4 8.c5 Be7 9.Nc4 Qd5 10.e4 Qe6 11.Be2) 7...Be6 (7...0-0 8.Bg2 Bg4 9.0-0 Qd7 10.c4 Rfe8 11.cd5) 8.Bg2 h6 (8...0-0 9.0-0 d4 10.Nc4 Nd5 11.e4) 9.0-0 (9.c4 d4 10.0-0 0-0 11.Qc2) 9...0-0 10.c4 b6 (10...d4 11.Qc2) 11.Qc2 (11.cd5+=) 11...d4 12.c5 (12.Ne1!? Bd7 13.Ndf3=) 12...bc5= 13.bc5 Be7 14.Rfe1 Rb8 15.e4? (better 15.e3!?=+) 15...Rb5–/+ 16.Reb1 Rc5 17.Qd1 Rb5 18.a4 Rb8 19.Ba3 Rb1 20.Qb1 Ba3 21.Ra3 Qd6 22.Nc4?? (better 22.Ra1–+) 22...Bc4 23.Ra1 Be6 24.Nd2 a5 25.Qc1 Nb4 26.f4 (26.Qf1 Qa6 27.Nf3 Nd7–+) 26...ef4 27.Qe1 (27.Nf3 Nh5–+) 27...Ng4 28.Nc4 (28.e5 Qe5 29.Nf3 Qd6–+) 28...Bc4 29.dc4 Nc2 30.Qc1 Na3! 31.c5 (31.Ra3 d3 Passed pawn; 31.Qa3 Qa3 Combination) 31...Qd8 (31...Qg6 32.Ra3 Ne3 33.Qe1–+) 32.Qa3 Ne3 33.Qa2 (33.gf4 Nc2 34.Qb2 Na1 35.Qa1 d3–+) 33...fg3 34.hg3 Ng2 (better 34...Qg5!? 35.Qf2–+) 35.Kg2 Re8 36.g4 (36.Qd5 Qd5 37.ed5 Re5–+) 36...d3 (36...Re4 37.Qb3 Rg4 38.Kf3–+) 37.Qd2 (37.Qd5–+) 37...Re4 38.Kf2 (38.Kh3–+) 38...Re2 (better 38...Qh4 39.Kg1 Rg4 40.Qg2 Rg2 41.Kg2 Qe4 42.Kh3–+) 39.Qe2 de2 40.Ke2 0–1. Dejna,Miroslaw – Koseski,Andrzej, Ferie z szachami Poland, 2010.

5.Nd2 d6 6.Ngf3 (6.g3 g6 7.Ngf3 Bh6 8.Bg2 0-0 9.0-0 Be6 10.c4 Qd7 11.d4) 6...Be7 7.g3 0-0 8.Bg2 h6 9.Nc4 Be6 10.0-0 Ng4 11.Qd2.

5.Nd2 Be7 6.Ngf3 (6.e4 0-0 7.Ngf3 d6 8.Be2 Be6 9.0-0 Qd7 10.Ng5 d5 11.f4) 6...d6 7.g3 0-0 8.Bg2 h6 9.Nc4 Be6 10.0-0 Ng4 11.Qd2.

5.Nd2 g6 6.g3 (6.Ngf3 d6 7.g3 Bh6 8.Bg2 0-0 9.0-0 Bd7 10.c4 Qe7 11.Qc2) 6...Bh6 7.Ngf3 0-0 8.c4 Re8 9.Bg2 d6 10.0-0 Be6 11.Qc2.

5.Nf3 A) 5...d6 6.g3 (6.Nbd2 Be7 7.g3 0-0 8.Bg2 Be6 9.0-0 h6 10.Nc4 Qd7 11.Qd2) 6...Be7 7.Nbd2 0-0 8.Bg2 Be6 9.0-0 h6 10.Nc4 Ng4 11.Qd2; B) 5...d5 6.Nbd2 Qd6 7.c4 d4 8.c5 Qe6 9.e3 de3 10.fe3 Ng4 11.Nc4.

4.d3 h6

5.Nd2 Nf6

6.g3 d5!? +=.

6.g3 d6 7.Bg2 Bf5 8.Ngf3 Qd7 9.c4 Be7 10.Nh4 Bh3 11.0-0 Bg2 12.Kg2 (12.Ng2!? d5 13.cd5 Qd5 14.f4=) 12...g5+= 13.Nhf3 g4 14.Ng1 h5 15.h4 (15.e3+=) 15...Nh7 (better is 15...gh3 16.Nh3 h4–/+) 16.Ne4 0-0-0 17.b5 ab5 18.cb5 Na7 (18...Nb8 19.b6+=) 19.a4 (19.b6 cb6 20.Qb3 d5 21.Rfc1 Nc6+/–) 19...Rdf8 20.Rc1 Kb8 21.Qd2 Rc8 22.d4 c5? 23.de5+– Qd8 24.Nd6 Bd6 25.Qd6 Qd6 26.ed6 Rcd8 27.Bh8 Rh8 28.Rc5 Rd8 29.Rd1 Nc8 30.d7 Ne7 31.e3 Nf6 32.Ne2 Ne4 33.Rh5 Rd7 34.Rd7 Kc8 35.Re7 Kb8 36.Re4 (36.Re4 Ka7 37.a5 f6 38.Re8 f5 39.Rhh8 f4 40.Ra8#; 36.b6 Nd6 37.Rh8 Nc8 38.Ree8 f6 39.Rc8#) 1–0. golfx – lomakon, kurnik, 2012.

6.g3 d6 7.Bg2 Bf5 8.Ngf3 Be7 9.e3 Qd7 10.c4? (10.0-0 0-0=) 10...Ng4?? (better is 10...Bd3!? 11.Qb3 e4–/+) 11.b5 (11.d4!?=) 11...ab5+= 12.cb5 Na7 13.a4 Bd3–/+ 14.e4 0-0 15.Qb3+= Nb5? 16.Qd3+– Nd4 17.Nd4 ed4 18.Qd4 Bf6 19.Qb4 c5 20.Qb3 Bb2 21.Qb2 d5 22.0-0 de4 23.Ne4 Rac8 24.Rfc1 c4 25.Qb4 Qd4 26.Qb7 f5 27.Rd1 Qe5 28.Nd6 Rb8 29.Qd5 Qd5 30.Bd5 Kh7 31.Bc4 Rb2 32.Rf1 Rd8 33.Nf5 Rdd2 34.Nh4 Nf2 35.a5 Ng4 36.Nf3 Ne3 37.Rfe1 Nc2?? 38.a6 Na1 39.Ra1 Rg2 40.Kh1 Rgf2 41.Bd5 (41.Bd5 Rfe2 42.a7+–) 1–0. golfx – lomakon, kurnik, 2012.

6.g3 d6 7.Bg2 Bg4 8.Ngf3 Qd7 9.0-0 Be7 10.c4 h5 11.Qc2 (11.d4 ed4 12.Nd4 Nd4 13.Bd4 0-0-0+=) 11...h4= 12.Nh4 Nh5 (12...Be2!? 13.Rfe1 Bg4=) 13.Nhf3+/– Bf3 14.Nf3 Nf6 15.e4 Ng4 16.h3 Nf6 17.Qe2 0-0-0 (17...Qe6 18.d4 ed4 19.Nd4 Nd4 20.Bd4+/–) 18.b5+– ab5 19.cb5 Nb8 20.a4 Rh7 (20...Rde8 21.Rfd1+–) 21.h4 Rdh8? 22.Ng5 Rh5 23.Nf7 R8h7 24.Ng5 R7h6 25.d4 ed4 26.Bd4 Ng4 27.Bg7 Rg6 28.Bd4 Bg5 29.hg5 Rgg5 30.f3 Nh2 31.g4 Rh7 32.Bf2?? Nf1+= 33.Kf1 Qf7 34.Bg3?? Nd7?? 35.Rc1 Ne5 36.Be5 Re5 37.b6 c6 38.a5 Ra5+= 39.Kf2? Ra2 (39...Ra2 40.Rc2 Rc2 41.Qc2 Qf6–/+) 0–1. golfx – lomakon, kurnik, 2012.

6.g3 Bd6 7.Bg2+= 0-0 8.Ngf3 Qe7 9.0-0 Na7 (9...Qe6 10.Nc4+=) 10.e4 (10.c4 c5 11.bc5 Bc7+/–) 10...c5 (10...Nc6 11.Nc4 Qe6 12.Nd6 Qd6 13.d4 ed4 14.Nd4+/–) 11.c3 (11.bc5 Bc7+/–) 11...cb4 12.cb4 Bc7 13.Nc4 The pressure on e5 grows 13...d6 14.Qc2 Bg4 15.Rac1 Nc6 16.h3 Be6 17.g4 (17.Rfd1 Rac8 18.d4 b5+=) 17...Qd7 (17...Rac8 18.d4 Ne4 19.Nce5 Ne5 20.Ne5=) 18.Qd2 (18.Rfd1 h5 19.d4 ed4 20.Nd4 hg4 21.hg4 Nd4 22.Rd4 Ng4+= (22...Bg4? 23.Ne5 Qe6 24.Ng4+–)) 18...h5 19.Qg5 (19.g5!? Nh7 20.Qe3=) 19...hg4–/+ 20.hg4 Ng4 21.Nh4? Nh6 22.f4 Bd8 23.Qg3+= ef4?? 24.Qg7# 1–0. golfx – lomakon, kurnik, 2012.

6.g3 Bd6 7.Bg2 Qe7 8.Ngf3 (8.c4 Qd8+/–) 8...b5 9.c4 bc4 10.dc4 Qe6 (better is 10...Rb8!?+=) 11.c5+/– Bf8 12.Qb3 Qb3 13.Nb3 Be7 (13...e4 14.Nh4 Be7+–) 14.Ne5 (worse is 14.Be5 Ne5 15.Ne5 Rb8+–) 14...Ne5 (14...Bb7 15.Nc6 Bc6 16.Bc6 dc6 17.Na5+–) 15.Ba8 c6 16.Be5 Nd5 17.b5 ab5 18.a4 ba4 19.Ra4 0-0 20.0-0 f6 21.Bd6 Bd6 22.cd6 Nc3 23.Ra7 Ne2 24.Kg2 Nc3 25.Nc5 Nb5 26.Ra5 Nd6 27.Rd1 Nc4 28.Ra7 Nb6 29.Nd7 Bd7 30.Bc6?? Bc6–/+ 31.f3 Nd5 32.Ra6?? Ne3–+ 33.Kf2 Nd1 34.Ke2 Nc3 35.Kd2 Bf3 36.Kc3 Rc8 37.Kd3 Bg2 38.Ke3 Re8 39.Kf4 Kf7 40.h4 Kg6 41.g4 Re7 42.Kg3 Bh1 43.h5 Kf7 44.Kh2 Bf3 45.Kg3 Bd1 46.Rd6 Re4 47.Rd1+= Re3 48.Kf4 Re5 49.Rd7 Kg8 50.Rd8 Kh7 51.Rd4 Rg5 52.Rd2 Rc5 53.Rg2 Rc4 54.Kg3 Rc3 55.Kh2 g6 56.hg6 (56.hg6 Kg6 57.Rg3–/+). golfx – lomakon, kurnik, 2012.

4.e3 b5

5.c4 bc4 6.Bc4 d5 7.Bb3 Qd6 8.Ba4 Bd7 9.Nf3 (9.d3 Be7=) 9...e4 10.Nd4 Nf6 (10...Ne5 11.0-0=) 11.h3 (11.Nc6 Bc6 12.Bf6 Qf6+=) 11...Nd4 (11...Ne5 12.0-0=+) 12.Bd7 (12.Bd4 a5=) 12...Qd7 13.Bd4 Be7 14.0-0 (14.Nc3 a5=) 14...0-0 15.Nc3 Ne8 (15...a5 16.Bf6 Bf6 17.d4=) 16.f3 f5 (16...Bf6 17.Bc5 Nd6 18.fe4 Bc3 19.dc3 de4 20.Qd5+=) 17.fe4 (17.Qb3!?+–) 17...de4+= (worse 17...fe4 18.Qb3 Nf6 19.Bf6 Bf6 20.Nd5+–) 18.Qb3 Kh8 19.Rf2 (19.d3 Bf6 20.de4 Bd4 21.ed4 Qd4 22.Kh1 Nd6=) 19...Nd6= 20.Nd5 Bg5 (20...Bh4 21.Rff1=) 21.Nf4 (21.d3 Rad8=) 21...Bf4 22.Rf4 Rad8 (22...a5 23.ba5 Ra5 24.Bc3=) 23.a4 Qf7 24.Qc3 Rd7 25.Raf1 Kg8 26.Rc1 (26.Be5 Qe6+=) 26...g5 (26...Rb8!?=) 27.Rf2+= h5 (27...Rb8 28.Qc5+=) 28.Rcf1 (28.Qc6 a5 29.b5 Kh7+–) 28...Kh7 (28...Qd5 29.Qc5 Nb7 30.Qf8 Kf8 31.Rf5 Ke7 32.Rd5 Rd5 33.Rc1+–) 29.g4+– Qg6 (29...Qe8 30.Qc6+–) 30.Be5 (30.Qc6 Rdf7+–) 30...Rff7 31.Bd6 (31.Qc6 fg4 32.Rf6 Rf6 33.Rf6+–) 31...cd6? (better 31...Qd6!? 32.Qc4 Rde7+=) 32.gf5 (32.Rf5!? hg4 33.hg4 Rf5 34.Rf5 Qe6+–) 32...Qf6+– 33.Qc6 (33.Rg2 Rb7+–) 33...d5+= 34.Qe6 Rd6 35.Qf6 Rdf6 36.b5 Rb6 37.Rb1 Kh6 (37...Kg7 38.f6 Kg6 39.Kg2=) 38.Kg2 (38.Rff1 g4+=) 38...Rf8 (38...Kg7 39.Kh2+=) 39.Kg3 Rfb8 40.f6 Rf8 41.f7 Kg6 42.Rb3 (42.h4 g4+–) 42...Rf7 (42...Rb7 43.b6+=) 43.Rf7+– Kf7 44.a5 (44.a5 Rg6 45.b6+–) 1–0. petrobbo (2025) – wasteofspace (2225), ChessWorld.net, 2015.

5.c4 bc4 6.Bc4 d5 7.Bb3 Qd6 8.h3 Nf6 9.Ne2 Be7 10.0-0 0-0 11.Ng3 Be6 12.d3 (12.Qc2 e4=) 12...Rab8 (12...Rfb8 13.Qc2=+) 13.Ba4 Na7 (13...a5 14.Bc6 Qc6 15.Be5=) 14.d4 (14.Nd2 Nd7=) 14...e4 15.Qc2 Nb5 16.Nc3 Nd7 17.Rac1 f5 (17...Nc3 18.Qc3 Rfc8 19.Rc2=) 18.Nge2 Nc3 19.Qc3 Exerts pressure on the backward pawn 19...Nb6 20.Bb3 Rfc8 21.Nf4 Bf7 22.g3 (22.f3 ef3 23.Rf3 Qd7+=) 22...g5 23.Ng2 Qh6 (23...Be8 24.Rfe1=+) 24.Kh2= Bd6 25.Rh1 Be6 26.Kg1 f4 (26...Bd7 27.h4=) 27.ef4 gf4 28.gf4 (28.Nf4 Bf4 29.gf4 Qf4=) 28...Bf4 (28...Kh8!?=+) 29.Nf4= Qf4 30.Qg3 (30.Qe3 Qe3 31.fe3 Kh8=) 30...Qg3 31.fg3 Rf8 32.Rc3 Rf7 33.Bc1 Nc4 34.Bc4 dc4 35.Rh2 Rd8 36.Be3 Rf3 37.Kg2 (37.g4 Rb8=+) 37...Rdf8 (37...Kf7!? 38.g4 Rg8–/+) 38.g4 Kf7 39.Bd2 (39.Rh1 h5 40.Rf1 Kg6 41.Rf3 Rf3–/+) 39...Ke7 (39...Rc3 40.Bc3 Kg6 41.Bd2–/+) 40.Be3 Kd6 41.Rh1 (41.d5 Bd5 42.Rh1 a5–/+) 41...h5 (41...Kd5–+) 42.g5? (better 42.d5 Bd5 43.g5–/+) 42...h4–+ 43.d5 Rg3 44.Kh2 Rh3 45.Kg2 Rg3 46.Kh2 Kd5 47.Rd1 Kc6 48.Rg1 (48.Rd4 Bd5 49.Rcc4 Bc4 50.Rc4 Kd5 51.Rc5 Ke6–+) 48...Rh3 49.Kg2 Rff3 50.Re1 (50.g6 Re3 51.Re3 Re3 52.Kf2–+) 50...Rfg3 51.Kf1 Rh2 (51...Rh1 52.Ke2 Bg4 53.Kd2 Rg2 54.Bf2 Rf2 55.Ke3 Rf3 56.Kd4 Re1 57.g6 Rd1 58.Ke5 Rc3 59.g7–+) 52.Re2 (52.Rec1 Bh3 53.Ke1–+) 52...Rh1 53.Kf2 Bh3 54.Rc4 Kb7 55.Bf4 (55.Rc7 Kb8 56.Ba7 Kc7 57.Re4 Rh2 58.Ke1–+) 55…Rf1 0–1. petrobbo (2020) – wasteofspace (2235), ChessWorld.net, 2013.

5.c4 bc4 6.Bc4 d5 7.Qf3?? Nf6?? (better 7...e4 8.Qe2 dc4 9.Qc4 Nge7–+) 8.Bb3= e4 9.Qe2 Bg4 (9...Bd6 10.d3 ed3 11.Qd3=) 10.f3= Be6 (10...Bh5 11.Ba4 Qd6 12.d3+=) 11.Ba4+= Qd6 12.Nc3 White plans b5 (12.Bf6!? gf6 13.Nc3+=) 12...Be7 13.b5 (13.Rc1 Bd7=) 13...ab5 (13...Ne5 14.ba6 c6 15.Bc2=+) 14.Nb5= Qd7 (14...Qd8 15.Rc1 Ra4 16.Rc6=+) 15.Qd1+= 0-0 16.Nd4 Qd6?? (16...Ra4 17.Qa4 Ne5 18.Qd7 Nd3 (worse 18...Nfd7 19.Bc3+–) 19.Ke2 Bd7= (worse 19...Nd7 20.Ne6 fe6 21.Bc3+–)) 17.Nc6+– Bd7 (17...Nd7 18.Ne7 Qe7 19.Bc6+–) 18.Ne7 Qe7 19.Bd7 (19.Bf6 gf6 20.Bd7 Qd7+–) 19...Qd7?! (19...Nd7 20.Ne2+–) 20.Ne2 (20.Bf6!? gf6 21.fe4 de4+–) 20...ef3 21.gf3 Rae8 (21...Ra6 22.Qc2+–) 22.Nf4 (better 22.Bf6 gf6 23.Qc2 Kh8+–) 22...d4 23.Kf2 de3 (23...c5 24.Qc2+–) 24.de3 Qd2 1–0. Williams,Barry – Fraser,Alistair, New Zealand Civic NZL, 1999.

5.d4 ed4 6.ed4 d5 7.Bd3 Nf6 (7...Qg5 8.Qf3=+) 8.h3 (8.Nf3 Bd6=) 8...Be7 (8...Bd6 9.Qf3=+) 9.Nd2 0-0 10.Ngf3 Re8 11.0-0 Bb7 12.Re1 h6 (12...Bd6 13.Re8 Qe8 14.Nb3=) 13.c3 Qd7 (13...Nh5 14.Bf1=) 14.Qc2 (14.a4 ba4 15.Qa4 Bd6+=) 14...Bd6 15.Bf5 Qd8 16.Re8 Qe8 17.Re1 Qf8 18.Bc1 Re8 19.Qd1 Bc8 20.Bc8 Rc8 21.Re2 Re8 22.Re8 Qe8 23.Qc2 (23.a4 Nd8=+) 23...a5 (23...Qe2!? 24.Qb2 Ne4–/+) 24.Qd3= ab4 25.ab4 Nd8 26.Qe3 (26.Nf1!?=+) 26...Qe3–/+ 27.fe3 Ne6 28.Kf2 g5 (28...Kf8 29.g4–/+) 29.g3 (better 29.g4!?=+) 29...g4–+ 30.Ng1 Ng5 31.Kg2 gh3 32.Kh2?? (better 32.Nh3 Nge4 33.Ne4 Ne4 34.Nf4 Nc3 35.Bb2–+) 32...Ng4 33.Kh1 h2 (33...Bg3?! 34.Nh3 Be1 35.Nf4 Bd2 36.Bd2–+; 33...Ne3?! 34.Ne2–+) 34.Ne2 (34.Ngf3 Bg3 35.Kg2 Ne3 36.Kh1–+) 34…Nh3 (34...Nh3 35.Ne4 de4 36.Kg2 Nhf2 37.Kf1 h1Q 38.Ng1 Nh2 39.Ke1 Qg1 40.Ke2 Qf1 41.Kd2 Qd1; 34...Ne3?! 35.Kh2 Kf8 36.Nb3 Ng4 37.Kg2–/+) 0–1. petrobbo (2075) – wasteofspace (2210), ChessWorld.net, 2014.

5.Nf3 e4!? 6.Nd4 Nd4 7.Bd4 Nf6=.

5.Nf3 Nf6 6.Ne5+/– Ne5 7.Be5 d6 (7...Bb7 8.f3+/–) 8.Bf6 (8.Qf3 d5+/–) 8...Qf6 9.Nc3 (9.d4 d5+=) 9...c5 (9...c6 10.Bd3+=) 10.Be2 (10.a4 ba4 11.b5+–) 10...cb4 (10...Bb7!? 11.Bf3 Bf3 12.gf3 Qg5+=) 11.ab4 d5? (11...Bb7 12.Bf3 Bf3 13.Qf3 Qf3 14.gf3+–) 12.0-0 (12.Nd5 Qd6 13.Bb5 Kd8+–) 12...Be6? (better is 12...Bb7 13.Bf3 Qg5+/–) 13.d3?? (better is 13.Bb5 Kd8 14.Bc6+–) 13...Bb4?? (better is 13...Qc3 14.d4 Bd7–+ (worse is 14...Qb4 15.c3 Qb2 16.Qd3–+)) 14.Na2 Bd6–/+ 15.c4 dc4 16.dc4 Be5 17.Rb1 bc4 18.Nc3?? Bc3–+ 19.Qc2 0-0 20.Rfc1 Be5 21.Bc4 Bf5 22.Bd3 Bd3 23.Qd3 Rfd8 24.Qe2 g6 25.g3 Qf5 26.Rd1 Bg7 27.Rd8 Rd8 28.Rd1 Rd1 29.Qd1 Bf6 30.Qa4 Qb5 31.Qd1 a5 32.Kg2 a4 33.Qb1 Qb1 34.Kf3 Qb7 35.Ke2 a3 36.Kf1 a2 (36...a2 37.h3 a1Q 38.Ke2 Qab2 39.Kd3 Qd5) 0–1. Fournier,Frederic (1975) – 2hd (1955), Active (1/0), 2003.

4.e3 d6

5.c4 Bd7 6.b5 ab5 7.cb5 Nce7 8.Ne2 (8.d4 ed4 9.Bd4 Nf5=) 8...Ng6 (better 8...Bb5!? 9.d4 ed4 10.Bd4 c5–/+) 9.Ng3 Nf6 10.Be2 Be7 (10...d5 11.d4 e4 12.Nc3=) 11.Nc3 (11.d4 c5=) 11...0-0 12.0-0 c6 13.a4 (13.bc6 bc6 14.d4 Qb6 15.de5 Qb2 16.ef6 Bf6 17.Qd6 Rfd8=) 13...Qb6 14.bc6 bc6 (14...Bc6 15.Ba3=) 15.Rb1 (15.Qc2 Rfb8 16.Rfb1 Qb3 17.Qb3 Rb3=) 15...Qc7 16.Ba3 c5 17.Qc2 Qa5 The pressure on the isolated pawn grows 18.Bb5 Be6 19.Rb2 Nd5 (19...Rfb8 20.Rfb1=) 20.Nd5 Bd5 21.Rfb1 f5 (better 21...Rfb8!?=) 22.Nf5+– Rf5? (better 22...Be6 23.Ne7 Ne7+–) 23.Qf5+– Rf8 24.Qd7 (24.Qc2 Kh8+–) 24...Bh4 (24...Rd8 25.Qg4 e4+–) 25.Qd6 (25.f3 Rd8 26.Qg4 Bf7+–) 25...Bf2 26.Kh1 Qa8 Threatening mate: Bxg2 27.Bf1 Nh4 (27...Bh4 28.Rb8 (28.Bc5 Be7 29.Qc7 Bc5+–) 28...Be7 29.Rf8 Kf8 30.Qc7 Qa4 31.Bc5+–) 28.Qf8! Kf8 (28...Qf8 29.Rb8) 29.Rb8 A double attack 29...Qb8 30.Rb8 Kf7 (30...Ke7 31.Bc5 Kd7 32.Bb6+–) 31.Bc5 Be1 (31...Nf5 32.a5 Kf6 33.a6+–) 32.d4 (32.Rd8!? Be4+–) 32...ed4 33.ed4 Bf2 (33...Ba5+–) 34.Rf8 Kg6 (34...Ke6 35.Rf2 Kd7 36.a5+–) 35.Rf2 Nf5 (35...Kh6+–) 36.Bd3 Be6 37.Bf5 Bf5 38.Rf5! Kf5 39.a5 Ke6 40.a6 Kd7 41.a7 Kc6 42.a8Q Kb5 43.h4 Kc4 44.h5 Kd3 45.g4 (45.Qa6 Kc3 46.d5 Kd2 47.d6 Kc2 48.d7 g6 49.Qa2 Kd3 50.d8Q Ke4 51.Qe6 Kf4 52.Bd6) 45...Ke3 46.d5 (46.Qa3 Kd2 47.Bb4 Kc2 48.Qc3 Kb1 49.Ba3 Ka2 50.Qb2) 46...Kf4 (46...Kd3 47.d6 Kc3 48.d7 Kc4 49.Qa4 Kc3 50.d8Q Kb2 51.Qdd4 Kc1 52.Qad1) 47.Qc8 (47.Qf8 Kg4 48.Kg2 Kh5 49.Qf5 g5 50.Qf7 Kg4 51.Qf3 Kh4 52.Bf2) 47...Kg5 (47...g6 48.d6 Kg3 49.hg6 hg6 50.d7 Kf3 51.d8Q Kg3 52.Qd6 Kf3 53.Qd3 Kf4 54.Qe3) 48.d6 (48.Qf5 Kh4 49.Bf2 Kh3 50.g5) 48...g6 49.d7 (49.Be3 Kf6 50.Qe8 gh5 51.d7 hg4 52.d8Q Kf5 53.Qg5) 49...gh5 50.gh5 (50.d8Q Kf4 51.Qf6 Kg3 52.Bd6 Kh3 53.gh5) 50...h6 (50...Kf5 51.d8Q Ke4 52.Qd4 Kf3 53.Qe3) 51.d8Q Kh5 (51...Kf4 52.Qf6 Ke4 53.Qcf5) 52.Qd5 (52.Qf5) 52...Kg6 53.Qcg8 Kf6 54.Qde6 (54.Qgf7) 1–0. aravind555 (1610) – shaikhmat (1695), lichess.org, 2019.

5.c4 Nf6 6.d4 ed4 7.ed4 Be7 8.Bd3 0-0 9.Nd2 h6 10.Ngf3 Bg4 11.Qc2 Bf3 12.Nf3 (worse is 12.gf3 d5+=) 12...d5 13.c5 Ne4 14.0-0 f5 15.Rfe1 Bg5 16.Ne5 (16.Be4?! A) worse is 16...de4 17.Qb3 Kh7 18.d5+/– (worse is 18.Ng5 Qg5 19.d5 Ne7+/–); B) 16...fe4 17.Ne5 Qe8=) 16...Ne5 17.de5 (17.Be4?! fe4 18.de5 Qe7=) 17...Be7 18.f3 c6 19.fe4 fe4 20.Bf1 Bg5 21.g3 Qd7 22.Rad1 Qe6 23.Bg2 Rad8 24.Qe2 Kh8 25.Bd4 Rf7 26.Rf1 Rdf8 27.Rf7 Rf7 28.Rf1 Rf1 29.Qf1 Kh7 30.Bh3 Qe7 31.Qf5 g6 32.Qd7 Qd7 33.Bd7 Bc1 34.Bc8 Ba3 35.Bb7 Bb4 36.Bc6 a5 37.Bd5 a4 38.c6 Ba5 39.Be4 a3 40.Bd5 Kg7 41.e6 Kf8 42.Bc5 Ke8 43.Ba3 Bb6 44.Kg2 (44.Kg2 h5 45.c7 Bc7 46.Bc6 Kd8 47.e7 Kc8 48.e8Q Bd8 49.Qd7 Kb8 50.Qb7#) 1–0. ferminkatcho (1875) – imerhisenaj (1845), kurnik, 2011.

5.c4 g6 6.d4 e4 7.d5 Nce7 8.Bh8 f6 9.Nd2 Bf5 10.Ne2 g5 11.Ng3 Bg6 12.Nge4 Be4 13.Ne4 Qd7 14.Nf6 Nf6 15.Bf6 0-0-0 16.Be2 Re8 17.Be7 Re7 18.Bg4 1–0. amator111 (1610) – rabbcio1, kurnik, 2012.

5.c4 h6 6.b5 ab5 7.cb5 Na7 8.a4 Nf6 9.Nf3 Bg4 10.Be2 b6 11.d4 Ne4 (better is 11...e4!? 12.Nfd2 Be2 13.Qe2 d5=) 12.de5+/– de5 13.Ne5?? (better is 13.Be5 Qd1 14.Bd1 Bb4 15.Ke2+/–) 13...Qd1 (better is 13...Bb4!? 14.Nc3 Qd1 15.Bd1 Bd1 16.Rd1 Bc3 17.Bc3 Nc3–+) 14.Kd1–/+ Nf2 15.Kd2? (15.Ke1 Nh1 16.Bg4 Rd8+=) 15...Rd8 (15...Be2 16.Ke2 Nh1 17.Nc3–+) 16.Bd4? (better is 16.Ke1 Nh1 17.Bg4–/+) 16...Bb4–+ (16...Nh1 17.Bg4 Bc5 18.Nc3+=) 17.Nc3 Bc3 18.Kc3 Be2 19.Rhe1 Ne4 20.Kb4 White prepares a5 20...c5?? 21.bc6= Ba6 22.a5 Rc8?? 23.ab6+– Nc6 24.Kb3?? Nb8 25.Ra6? Na6–+ 26.Nc4 Nac5 27.Kc2 0-0 28.Na5 Nb7 29.Kd3 Nec5 30.Bc5 Nc5 31.Ke2 Rb8 32.Nc6 Rb6 33.Ne7 Kh7 34.Nd5 Rb2 35.Kf3 Nd3 36.Re2 Ne5 37.Kf2 Re2 38.Ke2 Ng4 39.h3 Nf6 40.Ne7 Ra8 41.g4 g5 42.Nf5 Ra2 43.Kd3 Nd5 44.Ke4 Nc3 45.Ke5 Ra6 46.Kd4 Ne2 47.Kc5 Ng1 0–1. ariank – daliuss, kurnik, 2012.

5.d4 ed4 6.ed4 Qe7 (6...d5 7.Nf3=) 7.Be2 Bg4 8.Nd2 Nf6 (8...0-0-0 9.c4=) 9.Ngf3+= 0-0-0 (9...d5 10.0-0+=) 10.c4 (10.0-0 d5+=) 10...d5 (10...Re8!?=) 11.b5+/– ab5 12.cb5 Na5 (12...Nb8 13.0-0+/–) 13.0-0 Nc4 (13...Ne4 14.Re1+/–) 14.Nc4 (14.Bc4 dc4 15.Qa4 Be6+–) 14...dc4 15.Bc4 h5 (better is 15...Qe4+–) 16.Re1 Qd6 (16...Bf3 17.Qf3 (17.gf3?! Qd7+/–) 17...Qd7 18.Rac1+–) 17.Bf7 h4 (17...Qf4 18.Bc1 Qd6 19.Be3+–) 18.h3 Rd7 (18...Bh5 19.Bh5 Rh5 20.Qa4+–) 19.Bg6 (19.Qa4 Kb8 20.Ne5 Bh3 21.gh3 Re7+–) 19...Rh6 (19...Bf3 20.Qf3 (20.gf3?! Kb8+–) 20...Kb8 21.Bf5+–) 20.Bd3 (better is 20.Qa4!? Kb8 21.Ne5 Be6+–) 20...Bf3 21.Qf3 c6 22.Bf5 cb5 23.Bd7 Kd7 24.Qb7 Qc7 25.Qb5 Qc6 26.Qc6 Kc6 27.Rac1 Kb5 28.Re6 Nd5 29.Rh6 gh6 30.Rc8 Be7 31.Rh8 Ka4 32.Rh6 Kb3 33.Bc1 Kc2 34.Rc6 Kd1 35.a4 Nb4 36.Re6 Bd8 37.Be3 Nc2 38.d5 Ne1 39.d6 Ke2 40.Bg5 (40.Bg5 Kd3 41.Bd8+–) 1–0. Otto,Norbert (2075) – Doederlein,Frank (2000), remoteschach.de, 2007.

5.d4 e4 6.c4=.

5.d4 Qf6 6.de5 Qg6 (better is 6...de5!? 7.Nc3 Be6=) 7.ed6 Bd6 8.Nf3 Nf6 9.Bd3 Bf5?? (9...Qh6 10.Nbd2+/–) 10.Bf5 (better is 10.Nh4 Qg5 11.Nf5 (11.Bf5?! Qh4 12.Qf3 Rb8+/–) 11...Qg2 12.Ke2+–) 10...Qf5+= 11.0-0 0-0 12.Nd4 Nd4 13.Bd4 Ne4 14.f3 Qh5 15.g4?? (better is 15.fe4 Qh2 16.Kf2 Qg3 17.Ke2+/–) 15…Qh2 0–1. mihai740609 – niuniek89, kurnik, 2011.

5.Nf3 b5 6.c4 Bb7 (better is 6...bc4!? 7.Bc4 Nf6+=) 7.cb5+/– ab5 8.Bb5 Nf6 (better is 8...Qd7+–) 9.Qc2 Qd7 10.0-0 Be7? (10...Ke7 11.Qc4 d5+–) 11.Rc1 0-0 (11...Kd8 12.Bc6 Bc6 13.Qc6 Qc6 14.Rc6+–) 12.Bc6 Bc6 13.Qc6 Qd8 (13...Qc6 14.Rc6 Rfc8 15.d3+–) 14.Qc7 Rc8 (14...Qe8 15.d3+–) 15.Qc8 Qc8 16.Rc8 Rc8 17.Nc3 Nd7 (17...e4 18.Nd4+–) 18.Rc1 (18.a4 f5+–) 18...Bf6 (18...g5 19.g4+–) 19.Nb5 (better is 19.e4 g5+–) 19...Rb8 20.Nd6 e4 21.Bf6 ef3 22.Bd4 fg2 23.Rc8 Rc8 24.Nc8 1–0. Fournier,Frederic (1830) – RUBENORTEGA23 (1715), Active (5/0), 2004.

5.Nf3 Be7 6.Be2 f5 7.d3 Nf6 8.Nbd2 0-0 9.c4 e4 10.de4 fe4 11.Nd4 Nd4 12.Bd4 c6 13.Qc2 d5 14.cd5 cd5 15.0-0 Ng4 16.h3 Nh6 17.Qc3 Bf6 18.Qc5 Nf5 19.Bf6 Rf6 20.Bg4 Ne7 21.Bc8 Rc8 22.Qd4 Nf5 23.Qb2 Rg6 24.Qa2 Nh4 25.g3 Nf3 26.Kg2 Nh4 27.Kh2 Nf3 28.Kg2 Qd7 29.Ne4 Kh8 30.Nc5 Qf7 31.Kh1 Rh6 32.h4 Nh4 33.Qe2 Nf3 34.Kg2 Rh2 0–1. eliton – ncvd60, kurnik, 2012.

5.Nf3 Nf6 6.d4 e4 7.d5=.

4.e3 Nf6

5.b5 ab5 6.Bb5 d6 7.Nf3 Bd7 8.0-0 Ra5 9.a4 Na7 10.Bd7 Qd7 11.Nc3 d5 (11...e4 12.Nd4=) 12.d3 (12.Ne5 Qd8+/–) 12...e4 (better is 12...Nc6!?=) 13.de4+/– de4 14.Qd7 Nd7 15.Nd4 (15.Ne4 Nc6+/–) 15...Nc5 (15...Nf6 16.Ncb5 Kd7 17.f3 ef3 18.Nb3=) 16.Ncb5 (16.Ba3 Nc8+/–) 16...Nb5 17.Nb5 (17.ab5!? Ra4 18.Nb3 Ra1 19.Ra1+/– (19.Na1?! h5=; 19.Ba1?! Nb3 20.cb3 Rg8=)) 17...c6= 18.Nc3 g6?? (better is 18...Bd6=) 19.Ne4!+– Rg8?? (19...Ne4 20.Bh8 Discovered attack) 20.Nf6 Ke7 21.Ng8 Ke6 22.Bc3 Ra4 23.Nf6 Bg7 24.Ne4! Ne4 25.Bg7 Rc4 26.Rfc1 f6 27.Bf8 c5 28.Ra7 Kf7 29.Bh6 g5 30.Rb7 Kg6 31.Bf8 h5 32.Rc7 Kf5 33.f3 Nc3 34.Kf2 Na2 35.Re1 Rc2 36.Re2 Nb4 37.Rc2 Nc2 38.Rc5 (38.Rc5 Ke6 39.Rc2+–) 1–0. Fournier,Frederic (1620) – Chessfil_48 (1640), ChessOK.com, 2012.

5.b5 ab5 6.Bb5 d6 7.Nf3 Be7 8.0-0 0-0+= 9.Be2 e4 10.Nd4 Nd4 11.Bd4 d5 12.f4 b6 13.c4 c5 14.Bb2 (14.Be5 dc4 15.Bc4 Ba6 16.Ba6 Ra6+=) 14...d4 15.ed4 cd4 16.Qc1 (16.d3 Bc5–/+) 16...Bc5 17.Kh1 Re8 18.a4 (18.d3 Bf5–/+) 18...Qd6 (18...Bd7 19.Bd1–+) 19.Na3–/+ Bg4 (19...Bf5 20.Nb5 Qd7 21.Re1–/+) 20.Nb5 Qd7 21.Qd1 d3 22.Bg4 Ng4 23.Qe1 e3–+ 24.h3 ed2?? 25.Qd2?? Re2–+ 26.Qc3 f6 27.Rfd1 Nf2 28.Kh2 Nd1 29.Rd1 d2 30.Nd4 Bd4 31.Qd4 Qd4 32.Bd4 Rd8 33.Bb6 Rd7 34.Ba5 Ra7 35.Bd2? Rd7–+ 36.c5 Red2 37.Rc1 Rc7 38.c6 Rd6 39.a5 Rdc6 40.Rb1 Ra7 41.Rb8 Kf7 42.Rb5 Rca6 43.Rb2 Ra5 44.Kg3 Ra2 45.Rb5 Rd7 46.Rb3 Rdd2 47.Rb7 Kg6 0–1. Fournier,Frederic (1980) – Marcosferreira (1745), Active, 2011.

5.c4 d5 6.b5 ab5 (6...Na5 7.cd5 Qd5 8.ba6 ba6 9.Nf3=) 7.cb5 Na7 (7...Ne7 8.Be5 Ng6 9.Bd4+=) 8.Be5+= 1–0. GuestGSGR – GuestVBCV, freechess.org, 2017.

5.c4 d5 6.d4 dc4 (6...ed4 7.ed4 Qe7 8.Qe2=+) 7.Bc4 ed4 8.ed4 b5 9.d5 (better 9.Bb3=) 9...Ne5 (better 9...Nb4 10.Qe2 Qe7 11.Bf6 gf6 12.ab4 bc4=+) 10.Be5+– Be7? (10...bc4 11.Qe2 Qd5 12.Bf6 Be6=) 11.Bf6?? (better 11.Bb3+–) 11...Bf6= 12.Ra2 bc4 (12...bc4 13.Qe2 Qe7=). pat_cash87 – grishvin1030, lichess.org, 2020.

5.c4 d6 6.b5 ab5 7.cb5 Nb8 8.a4 (8.Be2 Be7=) 8...Be7=+ 9.Nf3 0-0 10.Nc3 Bg4 11.Be2 Nbd7 12.h3 Bh5 13.0-0 Nc5 (13...e4 14.Nd4 Be2 15.Qe2=) 14.d4 ed4 15.Nd4 (worse 15.Qd4 Nb3 16.Qf4 Na1 17.Ra1 Ra5–/+) 15...Be2 16.Qe2 Ne6 (16...Ra5 17.Rfd1=) 17.Nf5+= Nd7 (17...Re8 18.Rfd1+=) 18.Nd5+– Re8? (18...Bg5!?+–) 19.Qg4 (19.Nde7 Re7 20.Ne7 Qe7+–) 19...Bf6 (19...Bg5 20.a5 g6+=) 20.Nf6 (20.Nh6 Kf8 21.Qf5+– (21.Nf6?! Nf6 22.Qf5 Nc5+=)) 20...Nf6+= 21.Qg3 (21.Qf3 b6+–) 21...Ne4 22.Qg4 Nf6 23.Qg3 (23.Qf3 b6+=) 23...Ne4= 24.Qg4 (24.Nh6 Kf8 25.Qg4 N4c5=) 24...Nf6+= 25.Qf3 Ng5 (better 25...b6!?+=) 26.Qb7+– Qd7 (better 26...Nge4+–) 27.Ng3?? (better 27.Bf6!? Qf5 28.Bg5 Qg5 29.Qc7+–) 27...Rab8?? (better 27...Reb8 28.Qa8 Ra8 29.Bf6 gf6–+) 28.Qa7+– Ra8 29.Qd4 Ne6 (29...Nge4 30.Ne4 Re4 31.Qd1+–) 30.Qc3 (30.Qh4 Nd5+–) 30...Nc5 31.Rad1?? (better 31.Qc2 Qe6 32.Bd4+–) 31...Na4–/+ (31...Ra4?! 32.Nh5 Nce4 33.Nf6 gf6 34.Qc6 Qc6 35.bc6+=) 32.Qb3 Nb2 33.Qb2 Reb8 (33...Rab8 34.Rb1 Re5 35.Qd4 Reb5 36.Rb5 Rb5 37.Ra1–/+) 34.Rb1 (34.Ra1 Ra1 35.Ra1 Rb5 (35...Qb5?? 36.Qb5 Rd8 37.Nf5+–) 36.Ra8 Ne8=+) 34...Ra5–/+ Increasing the pressure on the isolated pawn on b5 35.Qc2 Rab5 36.Rb5 Rb5 (36...Qb5?! 37.Qc7 Ne8 38.Qc2+=) 37.Ne2 (37.Ra1 Qc8=+) 37...Rg5 (37...Rb8 38.Ra1–/+) 38.Ng3 (38.Ra1 g6 39.Nf4 Rc5=+) 38...h6 39.Ra1 Rg6 (39...Qc8 40.Ne4 Ne4 41.Qe4=+) 40.Ra8= Kh7 (40...Ne8 41.Nf5=) 41.Ra7 c7 becomes a target (41.Nf5 Rg5 42.g4 g6=) 41...Nd5 (41...Ne8 42.Nf5 Kh8 43.Ra8=) 42.h4 Ne3?? (better 42...h5+=) 43.fe3+– Qg4 (43...Qe8 44.Nf5 d5 45.Rc7+– (worse 45.Qc7 Qe4 46.Ng3 Qe3 47.Kh2 Rg3–/+)) 44.h5 Qg3 45.hg6 fg6 (45...Qg6 46.Rc7 Qc2 47.Rc2 Kg6+–) 46.Qc7 (better 46.Qc3+–) 46...Qe3 (46...Qe1!? 47.Kh2 Qh4 48.Kg1 Qe1 49.Kh2 Qh4 50.Kg1 Qe1=) 47.Kh2 (47.Kh2 Qe5 48.Kh3 Qe3 49.g3 Qe6 50.Kg2 Qd5 51.Kh2 Qh5 52.Kg1 Qd1 53.Kf2 Qd2 54.Kf3 Qd3 55.Kf4 Qd4 56.Kf3 Qd3 57.Kg2 Qd5 58.Kf1 Qd1 59.Kf2 Qd2 60.Kf3 Qd3=). AhmedSultanov (1770) – UDCHESS (1765), lichess.org, 2019.

5.c4 d6 6.Nf3 Bg4 7.Be2 Be7 8.0-0 0-0 (8...e4 9.Nd4 Be2 10.Qe2=) 9.d3 (9.Nc3 Bf5=) 9...h5 (9...Qd7 10.Nc3=) 10.h3 Bf5 11.Nc3 Nh7 (11...Re8 12.e4 Bg6 13.Nd5+=) 12.d4+– e4 (12...Nf6!?+–) 13.Nd2+– Nf6 14.Bh5 (14.Qc2 Kh8+–) 14...Nh5 (14...Re8!?+–) 15.Qh5+– Bg6 16.Qd5 Bf6 (16...Re8 17.Nde4 Rb8 18.f4+–) 17.Nde4 (better 17.Nce4 Bh4 18.Bc3+–) 17...Ne7? (17...Re8+–) 18.Nf6 gf6 19.Qb7 Kg7 (19...Bd3 20.Rfc1 Bc4 21.Qf3+–) 20.Qf3 Rh8 (20...Bd3 21.Ne4 d5 22.Qf6 Kg8 23.Ng3+–) 21.d5 Nf5 (21...Rh7+–) 22.Ne4 (22.Ne4 Kg8 23.Bf6+–) 1–0. Janek – Tyldum, internet, 2017.

5.c4 d6 6.Nf3 Bg4 7.Be2 Be7 8.h3 Bh5 (8...Bf3 9.Bf3 e4 10.Be2=) 9.0-0 0-0 10.Nc3 Bg6 (10...Re8 11.g4 Bg6 12.Nh4+=) 11.Nh4+= d5 (11...Bh5 12.Bh5 Nh5 13.Nf5+=) 12.Ng6+– hg6 13.cd5 Nd5 14.Bf3 Nc3 15.Bc3 Bd6 16.Bc6 bc6 17.Rc1 f5 (17...Qh4 18.d3+–) 18.Bb2 Qd7 19.Qc2 (19.d4 e4+–) 19...Rf6 (19...a5!?+–) 20.Qc6 Qe7 1–0. alddhsfd (1715) – ponraed1 (1820), lichess.org, 2019.

5.d4 Bd6 6.c4 (6.d5 Ne7 7.Nf3 a5=) 6...ed4 7.c5 (7.ed4 0-0 8.Bd3=) 7...Be5 (better 7...Be7!? 8.ed4 d6=+) 8.ed4+– Bf4 9.Qc2 (better 9.Nh3!? Qe7 10.Be2+–) 9...d6 10.Nd2 (10.Bd3 Bh6=) 10...Bd2 (better 10...dc5!? 11.bc5 0-0–/+) 11.Qd2= Ne4 (11...Be6 12.Bd3=) 12.Qc2 Bf5 (better 12...0-0 13.Bd3 Re8+=) 13.0-0-0?? (13.Bd3 Qh4 14.d5+–) 13...Qg5–+ 14.Kb1 (14.Rd2 Nf2 15.Nf3–+) 14…Nc3!! (14...Nc3 15.Bc3 Bc2 16.Kc2 0-0–+) 0–1. pat_cash87 – Karlakshmanan, lichess.org, 2020.

5.Nf3 d6 6.c4 Bg4 7.Be2 h6 8.Nc3 (8.d4 e4 9.Nfd2 Be2 10.Qe2 Qd7+=) 8...Be7 (8...e4 9.Nd4 Be2 10.Qe2= (worse 10.Nce2 Ne5–/+)) 9.h3 Bh5 10.0-0 0-0 11.Ne5 (11.d4+=) 11...Be2 (better 11...Ne5!? 12.Bh5 Nh5 13.Qh5 Nc4=) 12.Nc6+– Bd1 13.Nd8 Rad8 (13...Bb3 14.Nb7 Bc4 15.Rfc1+–) 14.Rad1 d5 15.cd5 Nd5 16.Nd5 Rd5 17.d4 Bf6 18.Rc1 c6 19.Rc5 Rd6 20.Bc3 b6 21.Rc4 b5 (21...Re8 22.Rc1+–) 22.Rc5+– Rfd8 23.Bb2 Be7 (23...Re8 24.Rfc1 Ree6 25.Kf1+–) 24.Rfc1 Re6 (better 24...Rc8+–) 25.Rc6 Rg6 (25...Kf8+–) 26.Ra6 (better 26.Rg6 fg6 27.e4+–) 26...Ra6–+ 27.Rc5?? (27.e4 Re6 28.e5 g5–+) 27...Rb8 (better 27...Bc5 28.bc5 Ra4–+) 28.Rc7 Rbb6?? (better 28...Bd6 29.Rc2 Re8–+) 29.Re7+– Rg6 (29...Rc6 30.d5 Rc2 31.Bd4+–) 30.Rb7 (30.d5 f5+–) 30...Rac6? (better 30...Rgb6 31.Rb6 Rb6+–) 31.Rb5?? (better 31.d5 Rb6 32.Rc7+–) 31...Rc2= 32.Rc5 (32.a4 Rb2 33.a5 Rc6=+) 32...Rb2=+ 33.b5 Ra2 (better 33...Rf6 34.f3 Rg6–/+) 34.b6?? (better 34.Rc8 Kh7 35.Rc3=) 34...Ra3?? (better 34...Rb6 35.Rc8 Kh7–+) 35.b7+– Rb6 36.Rc8 Kh7 37.b8Q Rb1?? (37...Rb8 38.Rb8 Kg6 39.Kh2+–) 38.Kh2 (38.Qb1 g6 39.Qb8 Ra5 40.Qc7 Ra7 41.Qd8 Ra1 42.Kh2 Rh1 43.Kh1 Kg7 44.Qh8) 38...Ra4 (38...Rb8 39.Rb8 Rd3+–) 39.Qb1 g6 40.Qc2 (40.Rc7 Kg8 41.Qb8 Kg7 42.Qe8 h5 43.Qf7 Kh6 44.Qf4 g5 45.Qd6) 40…Ra6 (40...Ra6 41.Qc7 Kg7 42.Qe5 Rf6 43.Qe8 Rf2 44.Qh8). alddhsfd (1735) – echs7 (1785), lichess.org, 2019.

5.Nf3 d6 6.d4 e4 7.Nfd2 d5 8.c4 Bd6 9.Nc3+= Be6 (9...Bf5 10.cd5 Ne7 11.Bc4+–) 10.cd5+– Nd5 11.Nde4 0-0 12.Bd3 Nc3 (12...Be7 13.0-0+–) 13.Bc3 Qh4 (better 13...f5 14.Nd6 Qd6+–) 14.Nf6?? (better 14.Nd6 cd6 15.d5 Bd5 16.Bh7 Qh7 17.Qd5+–) 14...Qf6–+ 15.Bh7?? (15.Qc2 Qh4 16.Be4–+) 15...Kh8 (better 15...Kh7 16.Qd3 Bf5–+) 16.Qh5 Threatening mate: Bg6 16...Qf2?? (better 16...Bg4! 17.Qg4 Kh7–/+) 17.Kf2+– Bg3 18.hg3 (18.hg3 Bg4 19.Qh4 g5 20.Qh6 f6 21.Bf5 Kg8 22.Qh7). FeegLood (2385) – BulletWillian (2195), lichess.org, 2016.

5.Nf3 d6 6.d4 Bg4 7.Be2 (7.de5 Ne5 8.Be2 Qe7+=) 7...ed4 (7...e4 8.Nfd2 Be2 9.Qe2=) 8.Nd4 Be2 9.Qe2 Nd4 10.Bd4 Be7 (10...c5 11.Bc3=) 11.c4 (11.0-0 c5 12.Bf6 Bf6=) 11...0-0 (11...c5 12.Bb2=) 12.0-0+= Qd7 (12...c5 13.Bc3+=) 13.Rd1 Qg4 (13...Qe6 14.Nd2+=) 14.f3 (14.Qg4 Ng4 15.h3 Nf6+=) 14...Qg6 (14...Qe6 15.e4=) 15.Nc3+= Rfe8 (15...a5 16.e4+=) 16.Rac1 Nh5 (16...a5 17.Nd5 Nd5 18.cd5 ab4 19.ab4+=) 17.Qf2 (17.Nd5 Bd8+–) 17...Bg5 (17...c5!? 18.bc5 dc5=) 18.Nd5+= Rac8 19.g4 (19.Rd2 Nf6=) 19...Nf6= 20.Nf4 (20.Bf6 Bf6 21.c5 dc5 22.Rc5 Be5=) 20...Bf4 21.ef4 Nd7 22.h4 (22.c5 dc5 23.Bg7 Kg7 24.Rd7 Qe6=) 22...f5 (22...Qh6 23.g5 Qg6 24.c5=+) 23.h5 (23.Qc2 Rf8=+) 23...Qf7 (23...Qh6 24.Qh2=+) 24.Qg3 (24.h6 fg4 25.Qg3 gh6=+) 24...Nf6 (24...c5 25.bc5 dc5 26.Ba1=+) 25.Rc2 (25.h6 fg4 26.fg4 gh6=) 25...fg4 (25...c5 26.Bb2=+) 26.fg4 Ne4 27.Qf3 Ng5 28.Qg2 (28.fg5 A pinning theme 28...Qf3) 28...Qf4–/+ Opening the f–file gets Black a lot of play 29.Rf2 Qe4 30.Qg3 (better 30.Rf5!? c5 31.Bf2–/+) 30...Rf8 31.h6? (31.Qg2 Nf3 32.Kh1 Rf5–+) 31...Rf2 (31...Rf3 32.Qg2 Nh3 33.Kh1 Nf2 34.Bf2–+) 32.Bf2 Nf3 (32...Rf8 33.Rd3 Nf3 34.Rf3 Rf3 35.Qg2–+) 33.Kf1 (33.Kg2 Ne5 34.Kg1–+) 33...Rf8 34.hg7 (34.c5 Qc2 35.Ra1 Nd2 36.Kg1 Ne4–+) 34...Kg7 (34...Rf4 35.Qh3 Qc4 36.Kg2 Rg4 37.Qg3 Rg3 38.Kg3 Qh4 39.Kg2 Qg4 40.Kf1 Nh2 41.Ke1 Qe6 42.Kd2 Qa2 43.Kd3 Qf2 44.Kc3–+) 35.c5 d5 (35...Rf4!? 36.cd6 Rg4 37.dc7 Qc4 38.Kg2–+) 36.c6 bc6 37.Qc7 Rf7 38.Qg3 Ng5 (38...Rf4 39.g5–+) 39.Qc3? (better 39.Re1 Qf4 40.Kg2–+) 39...Kg6 (39...Rf6 40.Rd4 Qe5 41.Qb2–+) 40.Qg3?? (40.Qc6 Rf6 41.Qd5 Qg4 42.Rd4 Qh3 43.Qg2–+) 40...Rf3 (better 40...Qc4 41.Kg1 Rf2 42.Qd3 Qd3 43.Rd3 Rf4–+) 41.Qg2 (41.Qb8 Rf6 42.Qg3 Qc4 43.Kg1 Rf2 44.Qd3 Qd3 45.Rd3–+) 41...Nh3 (better 41...Qc4 42.Kg1 Nh3 43.Kh1 Nf2 44.Kg1 Nh3 45.Kh1–+) 42.Rd2 (42.Rd4 Qe3 43.Rd2 Qb3–+) 42...Qc4 (42...Nf4 43.Qf3 Qf3 44.Ra2 Qd3 45.Kg1 Qb1 46.Be1 Qa2 47.Bf2 Qb1 48.Kh2 Qe4 49.Kg3 Kg5 50.Bd4 Qg2) 43.Ke1 Rf2 (better 43...Qc1 44.Rd1 A) 44...Rf2?! 45.Qh3 (45.Rc1?? Rg2 46.Rc6 Kg5–+) 45...Qf4 46.g5–/+; B) 44...Qc3 45.Kf1 Nf4–+) 44.Rf2?? (44.Qh3 Rf6 45.Qd3 Qd3 46.Rd3–+) 44...Qc1–+ 45.Ke2 Qc2 (45...Qa3 46.Qh2 Qb2 47.Kf1 Qf2 48.Qf2 Nf2 49.Kf2–+) 46.Kf3 (46.Ke1 Qb1 47.Kd2 Qb2 48.Ke1 Qa1 49.Kd2 Qa3 50.Re2–+) 46…Qd3 0–1. FeegLood (2660) – Blitzstream_twitch (2610), lichess.org, 2015.

4.e4 Nf6

5.Nc3 d5 6.ed5 Nd5 7.Bc4 Nc3 8.Bc3 (8.Qf3 Qd7 9.Qc3 Bd6=) 8...Bd6 9.Ne2 (9.Qh5 Qe7=) 9...0-0=+ 10.0-0 Bf5 (10...Qh4 11.Bd5=+) 11.Ng3= Bg6 12.Bb3 (12.Bd5 Bb4 13.Bb4 Nb4 14.Bb7 Nc2 (< 14...Bc2 15.Qg4 Nd3 16.Nh5+/–) 15.Ba8 Na1 16.Qa1 Qa8 17.Qe5 Qd8=) 12...Ne7 (12...a5!?=+) 13.d3 (13.Qf3 a5=) 13...Nf5 (13...a5!?=) 14.Nf5+/– Bf5 15.Qf3 Qd7 (15...Qg5 16.Qb7 Qf4 17.Rfd1+/–) 16.Qb7 Bh3?? (16...Rfe8 17.Rfe1+/–) 17.Qf3 (17.gh3 Qh3 18.Qe4 Qh5+–) 17...Qg4?? (better is 17...Bg4 18.Qe4 Bf5+/–) 18.Qh3 Qh3 19.gh3 Rab8 (19...Rfe8 20.Bd5 Rab8 21.Rfe1+–) 20.Rfd1 (20.Rfe1 Rfe8+–) 20…Rfe8 1–0. Parra,Alex – Abarca Grau,Pedro, Puente Alto IRT op, 2004.

5.Nc3 d5 6.ed5 Nd5 7.Bc4 Nf4 8.g3 Be6 9.Ba6 Ra6 10.gf4 ef4 11.Nf3 =+.

5.Nc3 d5 6.ed5 Nd5 7.Nd5 Qd5 8.Ne2 Be6 =+.

5.Nc3 d5 6.ed5 Nd5 7.Nf3 Nc3 8.Bc3 Bg4 (8...Bd6 9.Bd3=) 9.d3 (9.h3 Bh5+=) 9...Bf3 (9...Bd6 10.Be2=+) 10.Qf3= f6 (10...Nd4 11.Qd1=) 11.Be2 (11.Rb1 Bd6=) 11...Bd6 (11...Nd4 12.Bd4 Qd4 13.0-0=) 12.0-0+= 0-0 (12...Qd7 13.Qe4+=) 13.Qd5 Rf7 (13...Kh8 14.Bf3+=) 14.Bh5 (14.Bg4 Kf8+/–) 14...g6+= 15.Bf3 Rb8 (15...Qd7 16.Bd2+=) 16.Qb3 f5 (better is 16...Kg7!?+/–) 17.Bd5+– Qe7 (17...Qd7 18.Qc4+–) 18.Bf7 (18.Rae1 Qd7+–) 18...Qf7 19.Qf7 (19.Qb2 Rd8+–) 19...Kf7+/– 20.Bd2 (20.Rfe1 Nd4 21.Rac1 Rd8+/–) 20...Nd4 21.c4 (21.c3 Nb3 22.Ra2 Nd2 23.Rd2 Rd8+/–) 21...Ne2 (21...c5 22.Rfb1+/–) 22.Kh1 Nd4 23.c5 Be7 (23...Bf8 24.Rae1+/–) 24.Bc3 (24.Rae1 Bf6 25.f4 ef4 26.Bf4 Rc8+/–) 24...b6 (24...Rd8!?+/–) 25.Bd4 ed4 26.cb6 cb6 (26...c5 27.bc5 Bc5 28.Rfc1 Bb6 29.Rab1+–) 27.Rac1 Rb7 28.Rc4 Rd7 29.Rc6 Rd6 (29...Bd8 30.a4+–) 30.Rd6 Bd6 31.Rc1 Ke6 32.Rc6 b5 (32...a5+–) 33.Ra6 Kd5 (33...Kd7 34.Rb6+–) 34.Rb6 (34...Bf4 35.Rb5 Kc6 36.Rc5 Kd6 37.a4+–) 1–0. Wall,Bill – "Orr Bobby", internet, 2003.

5.Nc3 d6 6.Bc4 Be7 7.h3 (7.Nf3 Bg4=) 7...0-0 8.Nf3 b5 9.Bb3 Bb7 10.d3 Qd7 11.Nd5 Nd5 12.Bd5 Nd8 13.Bb7 Nb7 14.0-0 Nd8 (14...f5 15.Re1=) 15.d4 ed4 16.Bd4 Ne6 17.Be3 Bf6 18.e5 Be7 19.Qd5 c6 20.Qd3 Rad8 (20...Qc7 21.ed6 Bd6 22.c4=) 21.Rfd1 d5 22.Bb6 Rb8 23.Be3 f5 The passed pawn on e5 will quickly become a dangerous weapon 24.Nd4 (24.Re1 f4 25.Bd2 c5=) 24...f4 25.Ne6 (25.Bc1 Nd4 26.Qd4 f3=) 25...Qe6=+ 26.Bd4 f3 27.g4 (27.Qc3 fg2 28.Kg2 a5=+) 27...h5–/+ 28.gh5?? (better 28.Kh2–/+) 28...Qh3–+ 29.Qg6 Rf4 (29...Rf4 30.Be3 Rh4 31.Qh7 Kh7 32.Rd5 Qg2) 0–1. petrobbo (1995) – Entropist (2225), ChessWorld.net, 2012.

5.Nc3 Be7 6.Nf3 0-0 7.Ne2 (7.Bc4 d6=) 7...d6 8.d3 Bg4 9.Ng3 h6 10.Be2 Qd7 11.h3 Be6 12.0-0 Nh7 13.d4 Bh3? (better is 13...ed4 14.Nd4 Bf6=) 14.gh3+– Qh3 15.d5 Na7 16.Nf5 Qg4 (16...Bf6 17.Nh2 g6 18.Bg4 Qf1 19.Kf1+–) 17.Kh1 Bg5 18.Ng5 Qg5 19.Rg1 Qh4 (19...Qf6 20.Rg7 Kh8+–) 20.Nh4 Nb5 21.f4 ef4 22.Rg7 Kh8 23.Rf7 Kg8 (23...Nd4 24.Qd4 Nf6 25.Qf6 Kg8 26.Rg1) 24.Rg7 Kh8 25.Ng6 1–0. AsceticKingK9 – stefanW, ChessWorld.net, 2011.

5.d3 d5 6.ed5 Nd5 7.c4 Nf6 (7...Nf4 8.g3 Ne6 9.Bg2=+) 8.Be2 b5 (8...Be6 9.Nf3=) 9.c5 (9.Nf3 Qd6+=) 9...Bb7 10.Bf3 (10.Nf3 Qd5=) 10...Be7 11.Ne2 0-0 (11...a5 12.0-0 ab4 13.ab4 Ra1 14.Ba1=) 12.0-0 Re8 13.Ng3 Rb8 (13...a5 14.a4 Rb8 15.ab5 Nb4 16.c6=) 14.Re1 Nd7 (14...Qd7 15.Nd2= (15.Be5? Ne5 16.Re5 Bf3 17.gf3 Qd4 18.Re7 Qa1–+)) 15.Nc3 Nd4 (15...a5!? 16.Nd5 Bh4=) 16.Bb7+– Rb7 17.Nd5 c6 (17...Nc6 18.Ne7 Re7 19.Nf5+–) 18.Ne7 Re7 19.Bd4 ed4 20.Re4 (20.Nf5!? Re1 21.Qe1+–) 20...Re4 21.Ne4 Nf6 22.Nd6 Rd7 (22...Re7 23.a4+=) 23.Qf3+– Qc7 24.Re1 Re7 Do you see the mate threat? 25.Re7 Qe7 26.h3 Nd5 27.Qf5 (27.Qg4!? Qe1 28.Kh2 Qe5 29.g3+–) 27…Qe6+= ½–½. petrobbo (1980) – wasteofspace (2220), ChessWorld.net, 2012.

5.d3 d5 6.ed5 Nd5 7.Nf3 f6 8.g3 Be6 9.Bg2 Qd7 10.h4 (10.0-0 0-0-0+=) 10...Be7 11.Nbd2 Nb6 12.Rc1 (12.Ne4 0-0-0+=) 12...0-0 13.0-0 Rfd8 14.Qe2 Bg4 (14...a5 15.ba5 Na4 16.Rb1 Na5 17.Ba1 Ba3 18.d4 ed4 19.Nd4–/+) 15.Rfe1 Bf8 16.Qf1 a5 17.b5 Ne7 (17...Na7 18.Nh2 Be6 19.Bb7 Rab8–/+ (19...Nb5?! 20.Ba8 Ra8 21.Ra1=)) 18.d4= ed4 19.Nd4 Nf5 20.N2f3 Nd4 21.Nd4 Ba3 22.Ba3 Qd4 23.Bb7 Rab8 24.Bc6 Qa4 25.Be7 Rd2 26.c4 Qb3 27.Bc5 Rbd8 28.Bb6 cb6 29.Bd5 Kh8 30.Re3 Qb2 31.Qe1 Re2 32.Re2 Be2 33.Qc3 Qc3 34.Rc3 Bg4 35.Re3 h6 36.Re7 Bd7 37.Bf7 (37.Bc6 Bc6 38.bc6 Rc8+=) 37...g5 (37...a4 38.Bd5=) 38.hg5 hg5 39.Be6 Re8 40.Re8 Be8 41.c5 bc5 42.b6 Bc6 43.Bc8 c4 44.Kf1 a4 45.b7?? (better is 45.Be6 c3 46.Ke2+=) 45...Bb7!–+ 46.Bb7 a3 0–1. Ewin,Hans Peter (1950) – Hankel,Dennis (2135), Rhein Main op, 2007.

5.d3 Be7 6.Nd2 d6 7.Be2 0-0 8.Ngf3 h6 9.0-0 Bd7 10.c4 b5 11.Re1 Qc8 (11...bc4 12.dc4 Be6 13.Qc2+=) 12.Qc2 Na7 13.d4 ed4 14.Nd4 c5 15.N4f3 Qb7 16.e5 de5 17.Ne5 (17.Be5?! cb4 18.cb5 Bb5 19.Bb5 Nb5 20.ab4 Nd5=+ (< 20...Bb4 21.Bf6 gf6 22.Qc4=)) 17...Rfd8? (17...Rae8 18.cb5 Bb5 19.bc5 Be2 20.Re2 Nc6+–) 18.Bf3+– (18.Nd7?! Qd7 19.Bc3 cb4 20.ab4 Nc6+=) 18...Bc6 (18...Qc8 19.Ba8 Qa8 20.cb5 Nb5 21.bc5+–) 19.Nc6 Nc6 20.Nb3 cb4 21.Na5!! b3 (21...Na5 22.Bb7) 22.Qe2 (< 22.Nb7 bc2 23.Nd8 Bd8 24.Bc6 Rc8 25.cb5 ab5 26.Bb5 Bc7+–; 22.Nc6 bc2 23.Ne7 Qe7 24.Re7 Rac8 25.cb5 Nd5+/–) 22...Nd4 (22...Qb6 23.Nc6 (23.Bc6?! Ra7 24.Bc3 Rc8+–) 23...Bc5 24.Bf6 gf6 25.Nd8 Rd8 26.Bd5+–) 23.Bd4 (< 23.Nb7 Ne2 24.Re2 Re8 25.cb5 ab5+–; 23.Qe7?! Nf3 24.gf3 Qf3+/–) 23...Qc7 24.Qe7 (< 24.Ba8 Qa5 25.Bd5 Nd5 26.cd5 Rd5+–) 24...Qa5 25.Bf6 gf6 26.Ba8 Ra8 27.Rad1 bc4 28.Re3 c3 (28...Qh5 29.Rd8 Rd8 30.Qd8 Kh7+–) 29.Rg3 Kh8 (29...Qg5 30.Qb7 c2 31.Rg5 hg5+–) 30.Qf6 Kh7 31.Qg7 1–0. Maec,Michael – Guggenberger,Simon, remoteschach.de, 2003.

5.d3 g6 6.Nf3 d6 7.Be2 Bg7 8.0-0 0-0 9.c4 Qe7 10.Nc3 Be6 11.Nd5 Bd5 12.cd5 Na7 13.Qb3 c6 14.dc6 Nc6 15.Rac1 Rad8 16.Nd2 d5 17.f3 Rfe8 18.Rfd1 Bh6 19.Rc2 Be3 20.Kh1 Bd4 21.Nf1 Nh5 (21...Bb2 22.Qb2 Nd4 23.Rc3+=) 22.g3 (22.ed5 Nb8=) 22...de4 23.de4 Bb2 24.Rb2 Nd4 25.Qa2 (25.Qe3 Rd7+=) 25...Qd7 (better is 25...Ne2!? 26.Rd8 Neg3 (26...Rd8?! 27.Re2 Rd3 28.Re3=) 27.Ng3 Rd8 28.Nh5 Rd1 29.Kg2 gh5–/+) 26.Kg2 Qe7 27.Bc4 Qf6 28.Rf2 Rf8 29.Ne3 Qg5 30.Ng4 Ng7?? (better is 30...Kg7+=) 31.h4+– Qe7 32.Nh6 Kh8 33.Nf7 Rf7 34.Bf7 Rf8 35.Bd5 b5 36.Rc1 Qf6 37.f4 Rd8 38.fe5 Qe5 39.Rcf1 Nh5 40.Rf8 Rf8 41.Rf8 Kg7 42.Rg8 Kf6 43.Qf2 Ke7 44.Qf7 Kd6 45.Rd8 1–0. Jagura,Norbert – Baran,Mateusz, Ogolnopolska Olimpiada Mlodziezy C–12 Poland, 2014.

5.Bd3 d5 6.ed5 Nd5 7.h3 (7.Nc3 f5=) 7...Qg5 (7...Be6 8.Qf3=+) 8.g4 (8.Nf3 Qf6 (8...Qg2? 9.Rh2 Nf4 10.Be4+–) 9.0-0 Nf4+=) 8...Qh4 (8...Be6!?=+) 9.Nf3 Qe7 10.Be4 Be6 11.Ne5 (better 11.d3!?=) 11...Ne5–/+ 12.Be5 0-0-0 (12...Bg4 13.Qg4 Qe5 14.Nc3 Nc3 15.dc3 Qc3 16.Ke2=+) 13.c3 (13.Qf3 c6 14.d4 Nb6+=) 13...Nf6 (better 13...f6 14.Qf3 fe5–/+) 14.Bg2?? (14.Bf6 Qf6 15.Qf3 Qf3 16.Bf3 c5+=) 14...Nd5?? (better 14...Bd5 15.0-0 Qe5–+) 15.Qf3 (15.Qe2 h5=) 15...f6 16.Bd4 (16.c4!?=) 16...Bg4–/+ 17.Qe4 Qe4 18.Be4 Re8 19.f3?? (better 19.hg4 Re4 20.Kf1 Rg4 21.f3–/+) 19...Bf3–+ 20.Rf1 (20.0-0 Be4 (20...Re4?! 21.Rf3 Bd6 22.Bf2–+) 21.c4 Bb1 22.cd5 Be4–+) 20...Be4 21.Kd1 Bg2 22.Rg1 (22.Rf5 Ne7 23.Rf4 Bh3–+) 22...Bh3 23.d3 (23.Bf2 h5–+) 23...Nf4 24.Rg3 Bd7 25.Nd2 (25.Re3 Re3 26.Be3 Nd3–+) 25...g5 (better 25...Ba4 26.Nb3 Bb3 27.Kc1 Ne2 28.Kb2 Ng3 29.Kb3–+) 26.Kc2 (26.Bf6 Ba4 27.Kc1 Rg8–+) 26...Ne2 (26...Ba4 27.Kb2 Re2 28.Kc1–+) 27.Rf3 (27.Bf6 Ng3 28.Bh8 Ba4 29.Kb2 Re2–+) 27...Nd4 28.cd4 f5 29.a4 (29.Rf2 Bg7 30.Kc3 g4–+) 29...Bg7 (29...g4 30.Rff1 Bb4 31.Nc4–+) 30.Ra2 Bd4 31.a5 (31.Rf1 g4–+) 31...g4 32.Rf4 Be5 33.Rc4 (33.Rf1 h5–+) 33...Be6 34.Rb2 (34.Kd1 h5 35.Rac2 h4–+) 34...Bc4 35.Nc4 Bb2 36.Nb2 Re2 (36...g3 37.Nd1–+) 37.Kb3 Rb2! 38.Kb2 Rd8 0–1. alt20 – juanca_23, lichess.org, 2015.

5.Nf3 d6 6.Bc4 Bg4 7.Qe2 Be7 8.0-0 0-0 9.Nc3 b5 10.Bb3 Nd4 11.Qe3 Bf3 12.gf3 Nh5 13.Nd5 Bg5 14.Qe2?? (better is 14.Qd3 c6 15.Bd4 cd5 16.Be3–+) 14...Ne2 15.Kg2 Bd2 16.Rad1 Bf4 (better is 16...Qh4 17.Be5 Bf4 18.Rh1 Be5 19.Kf1–+) 17.h3 c6 18.Nc3 Nc3 19.Bc3–+ Qg5 20.Kh1 Ng3! 21.Kg2 Nf1 22.Kf1–+ Kh8 23.Ke2 Qg2 24.Rd6 Qh3 25.Rc6 f5 26.ef5 Bh2 27.Bb2 Rf5 28.c3 Qf3 29.Kd2 Qf2 30.Kc1–+ Bf4 31.Kb1 Qf1 32.Ka2 Bc1 33.Bc1 Qc1 34.Re6 Rf2 35.Bc2 Qc2 36.Ka1 Qb2# (36...Qd1#) 0–1. pieeater – Shikaulu, ChessWorld.net, 2012.

5.Nf3 Ne4 6.d3 Ng5 7.Ne5 Ne5 8.Be5 a5 9.ba5 Qe7 10.Qe2=.

5.Nf3 Ne4 6.Qe2 d5 7.Ne5 Qf6=.

4.Nf3 d6

5.c4 Bg4 6.e3 e4 7.h3 Bh5+= (worse is 7...ef3 8.hg4 fg2 9.Bg2 +/–.

5.c4 Bg4 6.e3 Bf3 7.Qf3+= Nf6 8.Be2 b5?? (better is 8...d5+=) 9.cb5 (better is 9.Qc6 Nd7 10.cb5 ab5 11.Nc3+–) 9...e4 (9...Na7 10.ba6 Rb8 11.0-0+–) 10.Qf4 ab5?? (10...Ne5+–) 11.Bb5 Qd7 12.Bf6 gf6 13.Qe4 Kd8 14.Bc6 Qe6 15.Qe6 fe6 16.Ba8 Kd7 17.b5 d5 18.Bc6 Kd6 19.0-0 Bg7 20.g3 f5 21.Ra2 Kc5 22.Nc3 Kb6 23.a4 Ka5 24.d4 Bf6 25.Ne2 Rg8 26.Nf4 1–0. Fournier,Frederic (2015) – cesteba (2015), Active (3/0), 2004.

5.c4 Bg4 6.e3 Nf6 7.Be2 g6 8.h3 Be6 9.d3 (9.d4 ed4 10.Nd4 Nd4 11.Bd4 Bg7+=) 9...Bg7= 10.Nbd2 0-0 11.0-0 d5 (11...Re8 12.Ng5=) 12.cd5 (better is 12.Ne5!? Ne5 13.Be5+/–) 12...Nd5 13.d4 (better is 13.Ne4!?=) 13...ed4+= 14.Nd4 Nd4 15.ed4 Qd7 (15...Nf4 16.Bf3 c6 17.Qc2–/+) 16.Nf3 Nf4 17.Ne5 Be5 (17...Ne2 18.Qe2 Qd6 19.Nc4+=) 18.de5= Qd1 19.Bd1 Nd3 20.Bc3 Rad8 21.Bc2 Nf4 22.Rad1?? (better is 22.Rfe1=) 22...Ne2–+ 23.Kh2 Nc3 24.Rd8 Rd8 25.f4 (25.Rc1–+) 25...Rd2 26.Bb1 Nb1 (better is 26...Bd5 27.Kg3 Rg2 28.Kh4–+) 27.Rb1 Ra2 0–1. Fournier,Frederic – PISCIS13, Active (8/0), 2004.

5.e3 Bd7 6.Be2 Be7 7.0-0 Nf6 8.c4 0-0 9.d3 h6 10.Nbd2 Nh7 11.e4 f5 12.Nb3 fe4 13.de4 Bg4 14.c5 Bf3 15.Bf3 Ng5 16.cd6 Qd6 17.Nc5 Nf3 18.gf3 b6 19.Qd6 Bd6 20.Nd3 Rf3 21.Rac1 Rd3 22.Rc6 a5 23.b5 Rb3 24.Rc7 Bc7 0–1. Darkseid – Mr.Oldenslo, ChessWorld.net, 2012.

5.e3 Nf6 6.c4 h6 7.Be2 Bf5 8.d3 b5 (better is 8...Be7!?=) 9.cb5+/– ab5 10.d4 ed4 (10...Rb8 11.de5 Ne5 12.Be5 de5 13.Qd8 Rd8 14.Bb5 Bd7 15.Bd7 Nd7+–) 11.Nd4 (better is 11.Bb5!? Bd7 12.ed4+/–) 11...Nd4= 12.Bd4 Bd7 13.Nc3 c6 14.0-0 Be7 15.Qc2 0-0 16.Ne4 (16.Rfd1 Be6+=) 16...Re8 17.Nf6 Bf6 18.Qc3 Bd4 19.Qd4 Be6 20.Bf3 d5 21.Rfc1 Rc8 (21...Qd6 22.Qc5 Qc5 23.Rc5= (worse is 23.bc5 Ra4–/+)) 22.Rc5 Qg5 23.Rac1 (23.Qc3 Bd7+=) 23...Bd7= 24.g3 Re6? (24...Ra8 25.Qc3=) 25.Qd1?? (better is 25.Bd5!? cd5 26.Rc8 Bc8 27.Rc8 Kh7 28.Qd3 Qg6 29.Qg6 Kg6 30.Rb8+–) 25...Ree8 (25...Qe7 26.Ra1=) 26.a4 (26.e4!?+/–) 26...ba4= 27.Qa4 Attacks the backward pawn on c6 27...Ra8 28.Qc2 Qf6 29.Bg2 Ra4?? (better is 29...Ra1=) 30.Qa4+– 1–0. Fournier,Frederic (1990) – ManuelCasado (1950), Echecs21 (5/5), 2003.

5.e3 Bg4 6.Be2 Nf6 7.0-0 Be7 8.d4 ed4 (8...e4 9.Nfd2 Bf5 10.c4+=) 9.Nd4 Be2 10.Qe2 Nd4 11.ed4 (11.Bd4 0-0+=) 11...d5 (11...0-0!?=) 12.Re1+= Kd7 (12...Qd7 13.Nd2+=) 13.c4 Re8 14.Qc2 White plans c5 (14.Qd3 dc4 15.Qc4 Bd6+–) 14...Kc8 15.Nd2 b6 (15...Kb8 16.Rac1+=) 16.c5 b5 (16...Kb7 17.Nf3+–) 17.Nf3 Ne4 (17...Qd7 18.a4 Rb8 19.ab5 Qb5 20.Ng5+–) 18.a4+– c6 (18...ba4 19.Qa4 Qd7+–) 19.ab5 cb5 20.Ne5 f6 (20...Bf6 21.Nf7 Qd7 22.Re4 Qf7 23.Re8 Qe8 24.Qf5 Qd7 25.Qh7+–) 21.Re4 de4 22.Qe4 fe5 (22...Ra7 23.Nc6 Bc5+–) 23.Qa8 Kd7 24.Qd5 Kc7 25.Qe5 Kb7 (25...Bd6 26.cd6 Kb8+–) 26.Qe4 Ka7 27.Qc6 Qc8 28.Qb6 Ka8 29.c6 Bb4 (29...Bd6 30.Ra6 Qa6 31.Qa6 Kb8 32.Qb7) 30.Ra6 Qa6 31.Qa6 Kb8 32.Qb7 1–0. GuestKHDH – GuestVNYX, freechess.org, 2018.

5.e3 Bg4 6.Be2 Nf6 7.d3 Bf3 (7...Be7 8.0-0=) 8.Bf3+= d5 9.Nd2 Bd6 (9...Be7 10.c4 Qd6 11.Qb3+–) 10.c4+– d4 (better 10...a5 11.cd5 Ne7+–) 11.e4 (better 11.Bc6 bc6 12.ed4 ed4 13.c5+–) 11...0-0= 12.c5 Be7 13.g3 (13.Qc2 Nd7=) 13...b6 (13...a5 14.Qb3=+) 14.cb6= cb6 15.Rc1 Qd7 16.Nc4 (16.Bg2 b5 17.f4 ef4 18.gf4 Ng4=) 16...Rab8 (16...Qb7–/+) 17.Rc2 (17.Bg2=+) 17...a5?? (better 17...b5 18.Nd2 Bb4 19.ab4 Nb4–/+) 18.b5= Na7 19.a4 (better 19.Ne5 Qb5 20.Nc4+=) 19...Rfc8 (better 19...Bb4 20.Kf1 Qe7=) 20.Ne5+– Qh3 (20...Qd6 21.Nc4 Qb4 22.Rd2+–) 21.Nc4 (better 21.Rc8 Rc8 22.Qb3 Bb4 23.Ke2+–) 21...Rc4? (better 21...Bc5!?+–) 22.dc4 (22.Rc4!? Bb4 23.Ke2 Bc5+–) 22...Bb4 23.Ke2 Bc5? (23...Rd8 24.Qd3+–) 24.Qd3 (24.Bd4 Qe6 25.Bc5 bc5+–) 24...Nd7 (24...Rd8 25.Rd1 Nc8+–) 25.Bd4 Bd4 26.Qd4 Nc5 (26...Rf8 27.Qd6 Nc8 28.Qf4+–) 27.Qd6 Re8 28.Qd5 (better 28.Qb6!? Ne4 29.Be4 Qg2+–) 28...Nc8 29.Rd2 h6 (29...Na4 30.Qc6 Rf8+–) 30.Qc6 Rf8 31.Ra2 (31.Rhd1 Na4 32.Ke3 Ne7+–) 31...Nb3 (31...Rd8 32.Qc7 Ne6 33.Qe5+–) 32.Qd5 (32.Rd1!? Nc5+–) 32...Ne7 33.Qd6 (better 33.Qd3 Nc5 34.Qd6+–) 33...Ng6?? (33...Nf5 34.Qb6 Nfd4 35.Ke3 f5+–) 34.Qb6 Qd7 (34...Qc8 35.Rc2 Rd8 36.Ke3+–) 35.Qe3 (35.Rd1!? Qe7 36.Kf1 Rc8+–) 35...Nd4 36.Kf1 Nf3 37.Qf3 Ne5 (37...Qh3 38.Ke2 Re8 39.c5+–) 38.Qe2 Nd3 (38...Rc8 39.Rc2 Qh3 40.Kg1+–) 39.Rd2 (better 39.Kg2 Rd8 40.Qe3+–) 39...Rd8 (39...Qh3 40.Kg1 Nc5 41.Qe3 Na4 42.Rd5+–) 40.Kg2 (better 40.c5 Qd4+–) 40...Qb7 (40...Nf4 41.gf4 Qd2 42.Qd2 Rd2+–) 41.Rhd1 1–0. Dino_Jarach (1920) – Pbom (1970), lichess.org, 2020.

5.e4 Nf6 6.Nc3 Be7 7.Be2 Bg4 8.h3 Bf3 9.Bf3 a5 10.b5=.

4.Nf3 e4

5.Nd4 Nd4 6.Bd4 d5 7.Nc3 b6 8.e3 c5 9.bc5 bc5 10.Be5 Ne7 11.f3 Ng6 12.Bg3 f5 13.fe4 de4 14.Rb1 Bd6 15.Bd6 Qd6 16.Bc4 Be6 17.Be6 Qe6 18.0-0 0-0 19.Na4 Qc6 20.Nb6 Rad8 21.Qe2 Rf7 22.Rb3 f4 23.Rf2 f3–+ 24.gf3 ef3 25.Qf1 Ne5 26.h3 Qg6 27.Kh1 Qc2 28.Rc3 Qe4 29.Nc4 Nd3 (30.Rd3 Rd3–+ (30...Qd3?! 31.Qd3 Rd3 32.Ne5 Ra3 33.Nf7 Kf7 34.Rf3 Ke6 35.Rf8–+)) 0–1. Rosner,Dirk – Suchland, DESC, 2000.

5.Nd4 Nd4 6.Bd4 Ne7=.

5.Nd4 Nd4 6.Bd4 Nf6 7.Bb2 (7.Nc3!?=) 7...d5–/+ 8.e3 Be7 (8...Bd6 9.Be2–/+) 9.g3 (9.Be2!?+=) 9...Bg4 10.Be2 Be2 (10...Bh3!?–/+) 11.Qe2+= 0-0 12.g4 (12.0-0 Qd7+=) 12...g6 (better is 12...a5–/+) 13.b5? (13.Nc3 c6+=) 13...a5 (better is 13...ab5 14.Nc3 c6–+) 14.Nc3+= Re8 (14...Qd7 15.g5 Ng4 16.Nd5 Bg5 17.c4+=) 15.0-0-0 a4 16.g5 Nh5 17.h4 b6 18.f3?? Ng3–/+ 19.Qf2 Nh1 20.Rh1 Bc5 21.fe4+= de4 22.Rf1+/– Qd7 23.h5 Qe6+= 24.hg6 fg6 25.Ne4 Be7 26.Qh4 Rf8= 27.Nf6 Attacks the backward pawn on h7 27...Bf6 28.Rf6 Qd7 29.Qc4+/– Rf7 30.Be5 Rd8 31.Rf7 Qf7= 32.Qc7 Qc7 33.Bc7 Rd5 34.c4+= Rg5 35.Bb6+/– h5?? 36.Kc2 h4?? 37.Bd8 h3?? 38.Bg5 h2–+ 39.b6 h1Q 40.Bf4 Qc6 41.Kc3 Qb6 42.Kd3 Qb3 43.Kd4 Qa3 44.Be5 Qc1 45.Kd5 Qd2 46.Ke4 a3 47.Bd4 Qb2! 0–1. ajeffries (2205) – iboyd (2185), net–chess.com, 2009.

5.Nd4 d5 6.Nc6 bc6 7.c4 d4 8.Qa4 Bb7 9.Qa5 (9.e3 d3+=) 9...Nf6 (better is 9...c5!?=+) 10.Qe5+= Be7 11.Bd4 0-0 12.Nc3 c5 (better is 12...Re8!? 13.Bc5 a5+=) 13.Bc5+/– Re8 14.Qd4 Qc8 15.Be7 Re7 16.Qc5 Qd7 17.0-0-0 (better is 17.Rd1!?+/–) 17...Re6 18.d3 e3 (18...ed3!? 19.Rd3 Rd6+=) 19.fe3+/– Rae8 20.e4 Rc6 21.Qa7 Bc8 22.Kb2 Rb6 23.h4 (23.Rc1 Qd6+/–) 23...Ng4 24.Rd2 (better is 24.Rb1!?+=) 24...Nf2= 25.Rg1?? (better is 25.Rh2 Ne4 26.Ne4 Re4 27.g3=) 25...Qd4–+ 26.Qc7 Ne4 27.de4 Qd2 (27...Qg1? 28.Rd8 Rbe6 29.Qc8+– (29.Rc8?! Qf1 30.Qd7 Kf8+/–)) 28.Kb3 Qe3 29.Qh2 (29.Rh1 Be6 30.Kc2–+) 29...a5 (29...Rc6 30.c5 Be6 31.Kc2–+) 30.g4 (30.b5 Be6 31.Kc2 Bc4–+) 30...ab4 31.ab4 Bd7 (better is 31...Be6 32.Kc2 Rb4–+) 32.b5?? (32.Qg3 Qd4 33.b5–+) 32...Ra8 (32...Bb5 33.Qe5 Bc4 34.Kc2 Bb3 35.Kb1 Bd1 36.Nb5 Re5 37.Ka2 Ra6 38.Na3 Ra3 39.Kb1 Rb5) 33.Kc2 (33.Rg3 Qc1 34.Rd3 Ra3 35.Kb4–+) 33...Ra1 34.Nb1 (34.Rg3 Qc1 35.Kd3–+) 34...Qe4 (34...Bb5 35.Qb8 Rb8 36.cb5 Rc8 37.Kb2 Qc1 38.Ka1 Ra8) 35.Kc3–+ Rb1 36.Qf2 Qe5 (36...Rc1 37.Kd2 Rd6 38.Kc1 Qc4 39.Kb2 Rd2 40.Kb1 Qb5 41.Ka1 Qb2) 37.Qd4 Rc1 38.Kd2 Qd4 (39.Kc1 Qc3 40.Kb1 Bb5 41.cb5 Rb5 42.Ka2 Qb2) 0–1. marus1 – myar24, internet, 2001.

5.Ne5 d6 6.Nc6+= bc6 7.e3 (7.d3 Nf6+=) 7...d5 (7...Nf6 8.d3=) 8.Be2 (8.d3 a5+=) 8...Qg5= 9.g3 (9.Rg1 a5 10.b5 Rb8=) 9...Bh3 (9...c5 10.c4=) 10.d4 (10.d3 a5 11.de4 Bg2=) 10...Nf6 (10...Qh6 11.Rg1=) 11.Nd2 (11.c4 a5 12.Qa4 Bd7=) 11...Qh6 12.c4 (better is 12.Rg1!?=) 12...Bg2–/+ 13.Rg1 Qh2 14.Rg2 Qg2 15.Bf1 Qg1 16.Qe2? (better is 16.Qa4 Ra7 17.Qc6 Kd8 18.cd5=) 16...Be7 17.0-0-0 Qh1 18.f4 Qh6 19.c5 0-0 20.g4 Qg6 21.g5 Nh5 22.Bh3 f5 23.Nb3 Qe8 24.Rg1 g6 25.Qc2 Ng7 26.Na5 Ra7 27.Qa4–/+ Ne6 28.Qc6= Kf7 29.Qe8 Re8 30.Nc6=+ Rb7 31.Ne5 Kg7=+ 32.Rg2 Rh8 33.Rh2 h6 34.gh6 Rh6–/+ 35.Rh1 Rb8 36.Bg2?? Rh1 37.Bh1 Rh8 (38.Be4 fe4–+ (38...de4?! 39.d5 Rh1 40.Kc2–+)) 0–1. tanto – llyon, net–chess.com, 2001.

5.Ne5 Nf6!? =+.

5.Ng1 d5 6.e3 Nf6 7.d3!? =+.

5.Ng1 d5 6.e3 Nf6 7.Bf6 Qf6 8.Nc3 Be6 9.b5 Ne5 10.ba6 –/+.

4.g3 d5

5.Nf3 Bd6 6.Bg2 h6 7.0-0 Be6 8.Nc3 Qd7 9.Nh4 Nf6 10.f3?? (better is 10.e4 de4 11.Ne4=) 10...g5–+ 11.b5 ab5 (11...gh4?! 12.bc6 Qc6 13.e3 hg3 14.hg3–+) 12.Nb5 gh4 13.Nd6 Qd6 14.f4 hg3 15.hg3 0-0-0 16.fe5 Ne5 17.Rf6 Ng4?? 18.Rf4= h5 19.Bh8+/– Rh8 20.c3 h4 21.Qe1 hg3 22.Qg3 f5 23.e3 Qb6 24.Raf1 Qb2 25.Rf5 Bf5 26.Rf5 Qc1?? 27.Rf1+– Qd2 28.Rf2 Nf2 29.Qf2 Qc3 30.Qf5 Kb8 31.Kf2 Ka7 32.Qd5 Rf8 33.Bf3 Qc2 34.Kg3 Qg6 35.Kf2 Qc2?? 36.Kg3= Qg6 37.Bg4?? Qd6 38.Qd6 cd6 39.e4 Kb6 40.Bf5 Ka5 41.Kf4 Ka4 42.Ke3 Ka3 43.Kd4 b5 44.Be6 b4 45.Kd5 Rf6 46.Kd6 Re6! 47.Ke6 b3 48.e5 b2 49.Kf7 b1Q 50.e6 Qf5 51.Ke7 Kb4 52.Kd7 Kc5 53.Kd8 Qe6 (53...Qe6 54.Kc7 Qe7 55.Kc8 Kc6 56.Kb8 Qb7#; 53...Kd6 54.Kc8 Qc2 55.Kb7 Qb3 56.Ka6 Kc6 57.e7 Qb6#) 0–1. wk1234 – miszka777, kurnik, 2011.

5.Bg2 d4 6.Nf3 Bd6 7.0-0 Bd7 8.d3 h6 9.c3 dc3 10.Nc3 Nf6 11.b5 ab5 12.Nb5 Na5 13.Nd6 cd6 14.Nh4 0-0 15.Rb1 Bc6 16.Bc3 Qd7 17.Bb4 Nd5 18.Bd5 Bd5 19.e4 Be6 20.Nf5 Bf5 21.ef5 Nc6 22.Qf3 Nb4 23.ab4 Qc6 24.Qg4 Qd7 25.Qe4 Qc6 26.Qg4 f6 27.b5 Qc2 28.Qe4 Rfb8 29.Rfc1 Qa2 30.h4 d5 31.Qe3 d4 32.Qe4 Qf7 33.b6 Rc8 34.Kg2 Rc1 35.Rc1 Qb3 36.Rc7 Qb6 37.Rb7 Qa6 38.Qd5 Kh8 39.Qf7 Rg8 40.h5 Qd3 41.g4 Qe4 42.f3 Qe2 43.Kg3 Qe1 44.Kg2 d3 45.Qd5 d2 46.Rd7 Qe2 47.Kg3 Qe3 48.Qd2 Qd2 49.Rd2 Re8 50.Re2 Kg8 51.f4 Kf7 52.fe5 fe5 53.Re4 Kf6 54.Kf3 Kg5 55.Kg3 Rb8 56.Re5 Rb3 57.Kf2 Kg4 58.Re6 Kf5 59.Rg6 Rb7 60.Kg3 Rc7 61.Kf3 Rc3 62.Ke2 Rh3 63.Rg7 Rh5 64.Kf3 Rg5 65.Rf7 Kg6 66.Rd7 h5 67.Rd1 Rg4 68.Rh1 Kg5 69.Ke3 h4 70.Kf3 Ra4 71.Rg1 Kf5 72.Kg2 Ra3 73.Kh2 Kf4 74.Rf1 Kg4 75.Rg1 Rg3 76.Rf1 h3 77.Rf8 Rg2 78.Kh1 Ra2 79.Rg8 Kh4 80.Rh8 Kg3 81.Rg8 Kf2 82.Kh2 Kf3 83.Kh3 1–0. rryy44 – cicirs, kurnik, 2012.

5.Bg2 e4 6.e3 Bd6 7.Ne2 Be5 8.Be5 Ne5 9.0-0 Qf6 10.f4 Bg4 11.Qe1 Nc4 12.Nbc3 b6 13.Nd4 c5 14.Nd5 Qd6 15.Be4 Be6 16.d3 cd4 17.dc4 Rc8 18.ed4 Rc4 19.c3 Nh6 20.Ne3 0-0 21.Nc4 Bc4 22.Rf3 Re8 23.Re3 Ng4 24.Bh7 Kh8 25.Re8 Kh7 26.Qe4 g6 27.Qa8 Kg7 28.Rae1 Bd5 29.Rg8 Kf6 30.Qd8 Qd8 31.Rd8 Bc4 32.Rd6 Kg7 33.Rb6 Kh6 34.Re8 f5 35.Rh8 Kg7 36.Rh4 Black resigned 1–0. Salvatore – 488, ChessWorld.net, 2012.

5.Bg2 Be6 6.Nf3 Bd6 7.0-0 Nf6 8.d3 0-0 9.Nbd2 h6 10.c4 d4 11.c5 Be7 12.Nc4 Bc4 13.dc4 Rb8 14.Qb3 e4 15.Nh4 Nh7 16.Nf5 Bf6 17.Be4 Qd7 18.Rad1 Rbd8 19.Bc6 bc6 20.e4 Ng5 21.Qd3 Qe6 22.f3 Kh8 23.Kg2 g6 24.Nh6 Qh3 25.Kg1 Qh6 26.h4 Ne6 27.Kg2 Bh4 28.gh4 Nf4 29.Kg3 Nd3 30.Rd3 Kg8 31.f4 Qg7 32.Rg1 Rfe8 33.Kf3 f5 34.e5 Qh6 35.Rg5 Re6 36.Rd2 Qh4 37.Rdg2 Kf7 38.R5g3 d3 39.Rd2 Qh1 40.Rgg2 Qf1 41.Rgf2 Qh3 0–1. rryy44 – robep, kurnik, 2012.

5.Bg2 Be6 6.Nf3 Bd6 7.0-0 Nf6 8.e3 0-0 9.d3 h6 10.Nbd2 Rc8 11.c4 dc4 12.dc4 Qe7 13.c5 Bc5 14.bc5 Qc5 15.a4 Qb6 16.Ba3 Rfd8 17.Qe2 e4 18.Ne1 Bf5 19.Nc4 Qb3 20.Qc2 Qc2 21.Nc2 b5 22.ab5 ab5 23.Nb2 Rd2 24.Rac1 b4 25.Nc4 Rdd8 26.Nb4 Nb4 27.Bb4 Nd5 28.Ba5 Re8 29.Nd2 c5 30.Rc4 Nf6 31.Bb6 Nd7 32.Ba5 Ne5 33.Rc3 c4 34.Ne4 Be4 35.Be4 Re7 36.Bb6 Re6 37.Bd4 g6 38.Bg2 Nd3 39.Bd5 Rd6 40.Bc4 Nb4 41.Bf7 1–0. rryy44 – tokarz52, kurnik, 2012.

5.Bg2 Be7 6.Nf3 d4 7.0-0 Bf5 8.d3 Qd7 9.c3 Bh3 10.cd4 Bg2 11.Kg2 ed4 12.Nbd2 Rd8 13.Ne4 Nf6 14.Nf6 Bf6 15.Qb3 0-0 16.Rae1 Qd5 17.Qc2 h5 18.e4 Qe6 19.e5 Ne5 20.Bd4 Rd4 21.Nd4 Qd5 22.Re4 Ng4 23.Nf3 Ne5 24.Ne5 Be5 25.Qc4 Qd6 26.Qc5 Qc5 27.bc5 Bb2 28.a4 Bc3 29.Rb1 Rb8 30.d4 f5 31.Re5 g6 32.Rd5 Kf8 33.c6 b6 34.Rd7 Rc8 35.d5 g5 36.Rb3 Be5 37.Re3 Bd6 38.Re6 f4 39.gf4 Bf4 40.f3 h4 41.h3 a5 42.Rh6 Kg8 43.Rhh7 Be5 44.Rh6 b5 45.ab5 a4 46.Rg6 Kh8 47.Rg5 Bf6 48.Rg4 Rg8 49.Rc7 a3 50.Rg8 Kg8 51.Ra7 Bb2 52.c7 Kf7 53.c8Q Kf6 1–0. rryy44 – heisann, kurnik, 2012.

3.a3 e6

4.e3 b5 5.c4 bc4 6.Nf3 d5=.

4.e3 b5 5.Nf3 Bb7 6.c4 bc4 7.Bc4 d5 8.Ba2 (8.Bb3 a5+=) 8...Nf6 9.Nc3 Bd6 10.d4 0-0 11.Na4 Qd7 (11...a5 12.Nc5 Bc8 13.Ne5=) 12.Nc5+= Bc5 13.dc5 h6 (13...Qe7 14.0-0+=) 14.Bf6+– gf6 15.Nd4 Ne5 (15...f5 16.Qf3+–) 16.Rc1 a5 (16...Bc6 17.f4 Ng6 18.Bb1+–) 17.b5 c6 18.bc6 (18.f4 Ng6+–) 18...Nc6 19.Qh5 Kh7 20.Bb1 f5?? (better 20...Kg7+–) 21.Nf5!+– ef5 (21...ef5 22.Bf5 Double attack) 22.Bf5 Kg7 (22...Qf5 23.Qf5 Kg7+–) 23.Bd7 1–0. alddhsfd (1805) – msrojas (1850), lichess.org, 2019.

4.e3 d5 5.d4 Nf6 6.c4 dc4 7.Bc4 b5 8.Bd3 Bd7 (8...Bd6 9.Nf3=) 9.Qc2 g6 (9...Ne7 10.Nf3+=) 10.Nd2 (10.Nf3 Bg7+–) 10...Bg7 11.0-0-0 (better 11.Ngf3!?+–) 11...0-0=+ 12.f3 (12.Qc5 a5 13.Bb5 Qe8 14.ba5 Nd4 15.Bd7 Nd7=+) 12...a5 13.Ne2? (better 13.ba5 Na5 14.Re1–/+) 13...ab4 14.ab4 (14.Qc5 ba3 15.Ba3 Re8–+) 14...Nb4 15.Qb1 (15.Qb3 Nd3 16.Qd3 Qe7–+) 15...Nd3 (better 15...Na2!? 16.Kc2–+) 16.Qd3 Qb8 (16...Nd5 17.e4 Nb6 18.Rdg1–+) 17.Rdg1 (17.Nb3 Qb6–+) 17...Ra7 (17...b4 18.Kd1–+) 18.g4 (18.Kd1 Qb6–+) 18...h6 (18...b4 19.Kd1–+) 19.h4 (19.g5 hg5 20.Rg5 Bh6–+) 19...c6 (better 19...b4!? 20.e4 Bb5–+) 20.g5–/+ hg5 21.hg5 Nh7 (21...Nd5 22.Ne4–/+) 22.f4 (22.Qe4 Re8 23.Qh4 Ng5 24.Rg5+–) 22...f6?? (better 22...Qc7–/+) 23.gf6 (better 23.Qg6 Ng5 24.fg5+–) 23...Nf6? (23...Rf6 24.Rg6 Rg6 25.Qg6+–) 24.Rg6?? (better 24.Qg6 Be8 25.Qh6+–) 24...Be8 (better 24...Qa8+–) 25.Kc2?? (better 25.Rg5+–) 25...Bg6–/+ 26.Qg6 Qe8 27.Qd3 Rff7 (27...Qd7 28.Qg6–/+) 28.Ng3 White prepares the advance f5 (28.Kd1 Qd7–/+) 28...Rfd7 29.Nge4 Ne4 30.Qe4 Rd5 31.Qh7 Kf7 (31...Kf8 32.Ne4 Bd4 33.Qh6 Bg7 34.Bg7 Rg7 35.Rg1+–) 32.f5 (32.Nf3!?=) 32...Rf5 (32...ef5 33.e4 fe4 34.Rg1–+) 33.e4? (better 33.d5!? Qf8 34.Rg1=+) 33...Rf2 (33...Rg5–+) 34.Qh5? (34.d5 Kf8 35.Bg7 Rg7 36.Qh8 Rg8 37.Qh6 Rg7 38.Rg1=) 34...Kf8 35.d5? (35.Qh4 Rg2 36.Rf1 Kg8 37.Rf2 Rf2 38.Qf2–+) 35...Qh5 36.Rh5 (36.Bg7 Kg7 37.Rh5 Ra2 38.Kc3 Rad2 39.dc6 Rb2–+) 36...ed5 (better 36...Ra2 37.e5 Rb2 38.Kb2 Rd2 39.Kc1 Rd5 40.Rh2–+) 37.ed5 (37.Bg7 Kg7 38.ed5 c5–+) 37...Bb2 (better 37...Ra2 38.Kd3 Rb2 39.Ke3 Rfd2 40.dc6–+) 38.Kb2 (38.dc6 Bg7 39.Rb5 Ra2 40.Kb3 Rfd2 41.Rb8 Kf7 42.Rb7 Kg6–+) 38…Rd2 (38...Rd2 39.Kb3 Rd5 40.Rh8 Kg7–+) 0–1. pat_cash87 – chesslover_1311, lichess.org, 2020.

4.e3 d5 5.Nf3 Nf6 6.c4 Be7 7.Qb3 Bd7 8.Nc3 dc4 9.Bc4 e5? (better is 9...b5 10.Be2 e5=) 10.Bf7 Kf8 11.Ng5 Ne8?? (better is 11...Nd5+–) 12.Bg6!! Nd6 (12...hg6 13.Qf7 Mate attack) 13.Nh7 Rh7 14.Bh7 Bf6 15.Nd5 Be6+– 16.Qd3 Bd5 17.Qd5 Ke7 18.0-0 Qh8 19.Bc2 Qg8 20.Qg8 Rg8 21.f4 ef4 22.Bf6 gf6 23.Rf4 Nd8 24.Raf1 Rf8 25.g4 Nb5 26.a4 Nd6 27.g5! Ne8 28.g6 Ne6 29.Re4 f5 30.Re5 N8g7 31.Bf5 Rf5 32.Rff5 Nf5 33.Rf5 Ng7 34.Rf7 Ke8 35.Rg7 (35.Rg7 Kf8 36.Rf7 Ke8 37.Rf4 c6 38.g7 Ke7 39.g8Q Kd7 40.Qh7 Ke6 41.Qf7 Kd6 42.Rf6 Ke5 43.Qe6) 1–0. cmulligan (2160) – islanderfan (2045), net–chess.com, 2011.

4.e3 Nce7 5.Nf3+= Ng6 6.h4 (6.Be2 d5=) 6...h5 (6...d5 7.h5 N6e7 8.h6+=) 7.Bd3 Nf6 (7...Rh6 8.c4+=) 8.Nc3 (8.Bg6 fg6 9.c4 d6+=) 8...d6 (8...Rh6 9.0-0=) 9.Bg6 fg6 10.Qe2 e5 11.0-0 Bg4 (11...Bf5 12.e4 Bg4 13.Qe3=) 12.Qd3 Kf7? (better 12...Bf5 13.e4 Ne4 14.Ne4 d5+=) 13.Ng5+– Kg8? (13...Ke7 14.Nd5 Nd5 15.Qd5+–) 14.f3 (14.Nd5 c6 15.Qg6 Rh6 16.Qf7 Kh8 17.Qb7 Qc8 18.Qc8 Rc8 19.Nf7 Kh7 20.Nh6 Kh6 21.Nf6 gf6+–) 14...Bf5 15.e4 Be6 (15...Bc8 16.f4 c6 17.fe5 Ng4+–) 16.Ne6 Qe7 (16...Qd7 17.Ng5+–) 17.Ng5 c6 (17...Qd7 18.f4 b5 19.a4+–) 18.Qc4 d5 19.ed5 Rh6 (19...b5 20.Qc6 Ra7+–) 20.d6 (20.d6 Kh8 21.de7 Be7 22.Nf7 Kh7 23.Rae1+–) 1–0. Janek – iocalt, internet, 2018.

4.e3 g6?? 5.Bh8+– f6 6.Nc3 (6.d4 Nh6 7.Qf3 Kf7+–) 6...b5 (6...Ne5+–) 7.Nf3 d5 8.d3 Bd6 9.Bg7 e5 10.Be2 d4? 11.ed4 Nd4 12.Nd4 ed4 13.Ne4 Qe7 14.Nd6 cd6 15.Bh6! Nh6 16.0-0 Kf7 17.h3 Kg7 18.Bf3 Bb7 19.Bb7 Qb7 20.Qf3 Qf3+/– 21.gf3 Re8 22.Kh2 Nf5 23.Rg1 d5? 24.Rge1+/– Re1 25.Re1 h5? 26.c4?? dc4 27.dc4 bc4 28.Rc1 c3 29.Rc3?? dc3 (29...dc3 30.Kh1 c2 31.h4 c1Q 32.Kg2 Nh4 33.Kh3 Qh1 34.Kg3 Qf3 35.Kh4 g5) 0–1. Fournier,Frederic (1950) – cepangele (1710), Active, 2007.

4.e4 b5 5.d4 Bb7 6.Nd2 Nf6 7.e5 Nd5 8.Ngf3 d6 9.c4 bc4 10.Nc4 de5 11.de5 Be7 12.Qc2 Bg5 13.Rd1 Qe7 14.Bd3 Nf4 15.Be4 0-0 16.Ng5 Qg5 17.g3 (< 17.Bh7 Kh8 18.g3 Ng2 19.Kf1 g6+/–) 17...Ng6 18.Ne3 Nge7 19.Rd7 Rab8 20.Bh7 Kh8 21.Be4 Rfd8 22.Rc7 Rdc8 23.f4 Qh5 24.Rc8 Rc8 25.Qg2 Rd8 26.0-0 g6 (26...Rd7 27.g4 Qh4 28.f5 ef5 29.gf5+–) 27.Nc4 Kg7 28.Nd6 Ba8 29.Rc1 Rb8 30.Bf3 (30.Rc6?! Bc6 31.Bc6 Qd1 32.Qf1 Qf1 33.Kf1 Nc6+/–) 30...Qh6 31.h4 Qh8 32.Rc6 Bc6 33.Bc6 Qd8 34.Be4 Qd7 35.Qf2 Kf8 36.Qc5 Rd8 37.Bd4 Qa4 38.Qb6 Qd1 39.Kh2 Qe2 40.Bg2 Ra8 41.Qb7 Rd8 42.Bb6 Re8 (42...Rd6 43.ed6 Nf5+–) 43.Ne8 Ke8 44.Qb8 (44...Nc8 45.Qc8 Ke7 46.Bc5#) 1–0. Krasny,Henryk Jan – Ranby,Hans, corr 3GMM½–07, 1999.

4.Nf3 Nf6 5.e3 Be7 6.c4 0-0 7.Be2 Ne4 8.0-0 Bf6 9.d4 Ne7 (9...d5!?+=) 10.Bd3+– d5 11.Qc2 Nf5 12.Be4 de4 13.Qe4 Nd6 14.Qc2 Bd7 15.e4 Bc6 (15...Nc8 16.Nbd2+–) 16.e5+– Bf3 17.gf3 (17.ef6?! Be4 18.Qe2 Qf6=) 17...Nf5 18.ef6 Nd4?? (better 18...Qf6 19.Qe4 Rfd8+–) 19.Qe4 e5 20.fg7 Qf6 (20...Re8+–) 21.gf8Q Rf8 22.Bd4 ed4 23.Kh1 c6 24.Rg1 Kh8 25.Nd2 Rd8 26.Rae1 h6 27.Qg4 Kh7 28.Ne4 Qg6 (28...Qe5 29.f4 Ra8 30.fe5 Rd8 31.Qg7) 29.Qf4 Qg1 (29...Re8 30.Nf6 Kh8 31.Re8 Kg7 32.Rg8) 30.Rg1 (30.Rg1 d3 31.Qf7 Kh8 32.Qg7) 1–0. marekt – kpoynter, net–chess.com, 2020.

4.Nf3 h6 5.d3 (5.e4 Nf6 6.e5 Nh5+=) 5...d6 6.c4 e5 7.Nc3 Bg4 (7...Nf6 8.e3=) 8.e3 Nf6 9.Be2 Be7 10.Qb3 Be6 11.Nd5 0-0 12.Nd2 Rb8 (12...a5 13.0-0+=) 13.Bf3 (13.0-0 b5+=) 13...Na7 (13...Nh7 14.0-0+=) 14.Qc2 (14.0-0 Nc6+=) 14...c6 (14...Bd5!? 15.cd5 c6+=) 15.Ne7+/– Qe7 16.0-0 Rbd8 17.h3 Nh7 (17...Qc7 18.c5+/–) 18.d4 (18.Be2 f5+/–) 18...ed4 19.ed4 (19.Rfe1 Ng5+/–) 19...d5+= 20.Rfe1 Qd7 (20...dc4 21.a4+=) 21.Re3 (21.Qc3 Rfe8+/–) 21...Bf5 (21...Ng5 22.Bh5+=) 22.Qb3 Be6 (22...Ng5 23.Bh5+=) 23.cd5 (23.c5 Ng5+/–) 23...cd5 24.Rae1 Nb5 25.Be2 Nd6 26.Bd3 (26.Nf3 Nc4 27.Ne5 Ne5 28.Re5 Rc8+/–) 26...Nf6 (26...Ng5 27.h4 Nge4 28.Ne4 Ne4 29.b5+=) 27.Nf3+/– Nde4 28.Ne5 Qd6 29.Qd1 (29.b5 Qb6+/–) 29...Rc8+= 30.Bb1 (30.b5 ab5 31.f3 Ng3+=) 30...Rc7 31.f3 Ng3 32.Bc1 (32.Kf2!? Nf5 33.R3e2+=) 32...Qb6 33.Bb2 ½–½. Amor Alcaide,Manuel (1975) – Romero Funieles,Rafael (1765), 12th Torneig Internacional Sant Marti, 2010.

3.a3 Nf6

4.c4 d6 5.b5 (5.d4 Bf5=) 5...ab5 6.cb5 Ne5 (6...Na5 7.e3=+) 7.d4 (7.e3 Bf5=) 7...Nc4=+ 8.Bc3 Nd5 9.Bd2 (9.e4 Nc3 10.Nc3 A) worse 10...Ra3 11.Ra3 (11.Bc4?! Rc3 12.Bd3 e5+=) 11...Na3 12.Qb3+–; B) 10...Na3=+) 9...Nd2 (9...Ndb6 10.e3=+) 10.Qd2 g6 (10...e5 11.e4 Nb6 12.de5 de5 13.Qd8 Kd8 14.Bd3=+) 11.e4= Nf6 12.e5 de5 13.de5 Qd2 14.Nd2 Ng4 (14...Nd5 15.Ngf3=) 15.f4 (15.Nc4 Be6 16.h3 Bc4 17.hg4 Bd5=+) 15...Bg7 (15...Ne3 16.Kf2 Nf1 17.Rf1=+) 16.h3 (16.Ngf3!?=) 16...Ne3=+ 17.Kf2 Nf1 18.Nf1 0-0 (18...g5 19.g3 f6 20.Ne2–/+) 19.Nf3 (19.Rc1 f6 20.e6 Be6 21.Rc7 Kf7 22.Rb7 Rfb8 23.Rb8 Rb8=+) 19...Ra5 (19...f6 20.ef6 Rf6 21.Re1–/+) 20.a4 (20.Rc1!?+=) 20...Be6 (20...f6 21.Ke2=+) 21.Ne3 f6 22.Rhc1? (22.Nd4 Kf7 23.ef6 Bf6 24.Ne6 Ke6 25.Ra2=) 22...Rc8?? (better 22...fe5!? 23.Nc4 Bc4 24.Rc4 Rf4–+) 23.b6 (better 23.Nc4!? Bc4 24.Rc4 fe5 25.fe5+=) 23...c6 24.g4 (24.Nc4 Ra6=+) 24...Bb3 (24...fe5 25.fe5 Rca8 26.Ra3–/+) 25.Nc4 (25.Nd2 Bf7 26.Ndc4 Bc4 27.Nc4 Rd5=) 25...Ra4 (25...Bc4 26.Rc4 fe5 27.Rd1=) 26.Ra4 Ba4 27.Ra1 Bb5 28.Ne3 (28.ef6 Bh6 29.Na5 ef6 30.Nb7 Bf4=) 28...Rd8 (28...fe5 29.fe5 Rf8 30.Ra7–+) 29.Ra7 Ba6 30.Nc2 (30.e6 Bh6 31.g5 Bf8=+) 30...c5–/+ 31.Na3 (31.Ne3 Kf7–/+) 31...fe5 (31...Kf7 32.Nb1–+) 32.fe5–/+ (32.Ne5? Be5 33.fe5 Kf7–+) 32...c4 (better 32...Rc8–/+) 33.Ke3? (better 33.Ra6 ba6 34.Nc4–/+) 33...Rd3–+ 34.Kf4 (34.Kf2 Ra3 35.Ra8 Bf8–+) 34...Ra3 35.Nd4 (35.Ra8 Bf8 36.Ng5–+) 35...Ra4 (better 35...g5 36.Kf5 Ra5 37.Ra8 Kf7 38.Nf3–+) 36.Ne6?? (better 36.Ra8 Bf8 37.Ne6=+) 36...c3–+ 37.Ke3 Be5 38.Nc5 (38.g5 Bb5 39.Ra4 Ba4 40.Nc5–+) 38...Bd4 39.Kf4 Bc5 40.Ke5 Bb6 41.Ra8 Kf7 42.g5 c2 (42...Bc7 43.Kd5 e6 44.Kc5 Rc4) 43.Rc8 Bd4 (43...Be2 44.h4 Bd4 45.Kf4 Bf2 46.Ke5 Bg3 47.Kd5 e6 48.Kc5 c1Q 49.Kb6 Qb2 50.Kc5 Qd4) 44.Kd5 (44.Kf4 Bc5 45.Kg3 Ra3 46.Kh2 c1Q 47.Rc5 Qd2 48.Kg1 Ra1 49.Rc1 Rc1) 44…Bc4! (44...Bc4 45.Ke4 c1Q 46.Rf8 Kf8 47.Kf3 Qe3 48.Kg4 Be2 49.Kh4 Qf2) 0–1. alt20 – propuh, lichess.org, 2016.

4.c4 e5 5.Nf3 d6 6.e3 Bf5 7.d3 Be7 8.Be2 0-0 9.0-0 e4 10.Nd4 Bg6 (10...Nd4!? 11.Bd4 c5=+) 11.Nc6= bc6 12.Nc3 Rb8 (12...Re8 13.d4=) 13.Qc2 (13.Ne4 Ne4 14.de4 a5+=) 13...d5 14.Rfd1 d4? (better 14...ed3 15.Bd3 Qd6+=) 15.de4+– Qd7? (better 15...c5+–) 16.Rd4 Qc8 17.c5 Nd5 (17...Qb7 18.Rb1+–) 18.Nd5 cd5 19.Bd3 (better 19.Rd5 a5+–) 19...de4 20.Be4 a5 21.Bg6 fg6 (21...hg6 22.Re4 Re8 23.ba5+–) 22.Qc4 Kh8 23.Rb1 (better 23.Re4!? Bd8+–) 23...Qf5 24.Rf1 ab4 25.ab4 c6 (25...Qf7 26.Qf7 Rf7 27.Ra1+–) 26.Rf4 Qg5 (26...Qc8 27.Be5 Rb7 28.Rf8 Qf8 29.Qe4+–) 27.Rf8 (27.Qe6 Bf6 28.h4 Qd5 29.Qd5 cd5 30.Bf6 gf6+–) 27...Bf8 28.Rd1 h5 29.Rd4 Bc5 (29...Rd8 30.Qa6 Qf6 31.Rd8 Qd8 32.Bd4+–) 30.Rd7 (better 30.h4 Qe7 31.Qc5 (31.bc5?! Rb2 32.Rd6 Qe8+–) 31...Qc5 32.bc5 Rb2 33.Rd6+–) 30...Rb4?? (30...Qf5 31.Bg7 Kh7+–) 31.Bg7 Kh7 32.Bb2 (32.Bf6 Kh6 33.Rh7 Kh7 34.Qf7 Kh6 35.Qg7) 32...Kh6 (32...Qe7 33.Re7 Be7 34.Qf7 Kh6 35.Bg7 Kg5 36.f4 Kg4 37.Qe6 Kh4 38.g3) 33.Qf7 (33.Rh7 Kh7 34.Qf7 Kh6 35.Qg7) 33...Qg4?? (better 33...Qf5 34.Bg7 Kg5+–) 34.Bg7 Kh7 35.Bf8 (35.Bf8 Kh8 36.Qg7; 35.Bf6 Kh6 36.Qh7) 1–0. skywings – universalmonsterman, gameknot.com, 2019.

4.d3 d5 5.Nf3=.

4.e3 b5 5.Nf3 Bb7 6.Be2 e6 7.0-0 d6 8.d3 g6 9.Nbd2 Bg7 10.c4 Qe7 11.cb5 ab5 12.d4 Ba6 (12...Na7 13.a4+=) 13.Rc1 (better is 13.Qc2 Nb8 14.a4+/–) 13...Rb8?? (13...Nd8 14.a4+=) 14.Qc2 (better is 14.Rc6 Bb7 15.Rc2 0-0+–) 14...Qd7?? (14...Rb6!?+/–) 15.Nb3 0-0?? 16.Rfd1 d5?? 17.Nc5 Ne7 18.Nd7 Nd7 19.Qc7 Bc8 20.Ne5 Be5 21.de5 Rb7 22.Qc2 Rb6 23.f4 Nb8 24.Qb3 Bb7 25.Bf3 Rc8 26.Rc8 Bc8 27.Rc1 Bd7 28.Bd4 h5 29.Bb6 Bc6 30.Rc6! Nbc6 31.Bd4 Kh7 32.a4 Nd4 33.ed4 ba4 34.Qa4 Nc6 35.Qc6 (35.Qc6 Kg7 36.b5+–) 1–0. Fournier,Frederic (1990) – chek (1855), Active Blind, 2007.

4.e3 d6 5.c4 e5 6.b5 ab5 7.cb5 Ne7 8.Be2 (8.Ne2 Ra5=+) 8...Bd7 9.Nf3 g6 (9...c6 10.bc6 Nc6 11.d4=) 10.Bc4 Bg7 11.Ng5 (11.d3!?=+) 11...0-0 12.Qf3 (12.Nf3!?–/+) 12...h6–+ 13.Ne4? (better is 13.Nf7 Rf7 14.Bf7 Kf7 15.Qe2–+) 13...Ne4 14.Qe4 Bf5?? (better is 14...d5!? 15.Bd5 A) 15...Bb5?! 16.a4–/+; B) 15...Nd5?! 16.Qd5 Ra5 17.a4=+ (17.Be5?? Rb5 18.Qd3 Re5–+); C) 15...Bf5 16.Bf7 Rf7 17.Qb7 Rb8–+) 15.Qb7 (15.Qh4!?–/+) 15...d5–+ 16.Bb3? (better is 16.e4 Rb8 17.Qa6–+) 16...Rb8 17.Qa6 Bd3 (better is 17...Qd7!? 18.Qa4 Qb5 19.Qb5 Rb5 20.Be5 Be5 21.d4 Bd4 22.ed4 Rb3 23.Nd2–+) 18.Nc3 (18.a4 Qd7 19.Qa7–+) 18...d4 19.ed4? (19.Nd1 Bb5 20.Qa7–+) 19...ed4 (19...Qd4?! 20.Qa4–/+) 20.Na4 (20.Ne4 Bb5 21.Qa7–+) 20...Bb5 21.Qa5 Nc6 22.Qb5 Rb5 23.Bc4 Rb2! 24.Nb2 Re8 25.Kd1 Na5 26.Bb5 Re5 27.Ba4 Qe7 28.Nd3 Nc4 29.Re1 Re1 30.Ne1 Nb2 31.Kc2 Na4 32.Nd3 Qe4 33.Re1 Qg2 34.Re8 Kh7 35.Nf4 Qf2 36.Nd3 Qh2 37.Rh8 Bh8 38.Nf2 Qf2 (39.Kb3 Qd2 40.Ka4 c6 41.Kb3 Qc3 42.Ka4 Qc4 43.Ka5 Qb5) 0–1. bambinik – paul1404, internet, 2001.

4.e3 d6 5.c4 e5 6.Be2 Be6 7.Nf3 Be7 8.d3 0-0 9.Nbd2 b6 10.h3 Kh8 11.0-0 Qd7 12.Ng5 Bf5 13.e4 (13.f4 Bg6+=) 13...Bg6= 14.f4 ef4 15.Rf4 Nd8 (15...h6 16.Ngf3=) 16.Qf1 (16.Rf2 Ne6 17.Ngf3 Rae8+=) 16...Ne6 (16...Nh5 17.Bh5 Bg5 18.Bg6 hg6 19.Rf2=+) 17.Ne6= (17.Bf6 Nf4 (17...Bf6?! 18.Rf6 gf6 19.Qf6 Kg8 20.Rf1=) 18.Bg7 Kg7 19.Qf4 f5 20.ef5 Rf5–+ (20...Bf5?! 21.Rf1–/+; 20...Qf5?! 21.Qf5 Bf5 22.Nge4–/+)) 17...Qe6 (17...fe6!? 18.Qf2 e5=) 18.Nf3 Nh5 19.Nd4 Ng3?? (better 19...Nf4 20.Ne6 fe6+–) 20.Ne6+– Nf1 21.Ng7 (better 21.Nf8 Rf8 22.Raf1+–) 21...f6 22.Ne6 (22.Kf1?! Kg7 23.Bg4 c5+–; 22.Raf1?! Kg7 23.h4 h6+–; 22.Rff1?! Kg7 23.Bg4 c5+–) 22...Ng3 23.Bg4 Rf7 (23...Rfc8 24.Bf6 Bf6 25.Rf6+–) 24.Nc7 Ra7 25.Nd5 Nh5 (25...Kg8 26.Re1 (worse 26.Nb6 f5 27.ef5 Nf5+–) 26...Kf8 27.Be6+–) 26.Bh5 Bh5 27.Ne7 Rae7 28.Rf6 Rf6 (28...Kg8 29.Rd6 Rb7 30.Be5+–) 29.Bf6 (29.Bf6 Rg7 30.c5 dc5 31.bc5 bc5 32.g4+–) 1–0. GuestNKJR – GuestVCXC, freechess.org, 2017.

4.e3 e6 5.c4 Bb4?? (better is 5...Be7=) 6.ab4+– Nb4 7.Nf3 h6 (7...d6 8.Bc3 Nc6 9.d4+–) 8.Be2 0-0 9.0-0 d5 10.cd5 Nbd5 11.Nc3 Nc3 12.Bc3 Ne4 13.Bb2 Re8 14.d4 b5? (14...Bd7 15.Qc2 Nd6 16.Ne5+–) 15.Qc2 (15.Bb5 Bd7 16.Bd3 Nd6 17.Ra6 Ra6 18.Ba6 Bc6+–) 15...Ng5? (15...Bb7+–) 16.Ng5 Qg5 (16...hg5 17.Bb5! Bd7 18.Ba6 Ra6 19.Ra6+–) 17.Qc6 e5 (17...Bb7 18.Qb7 c5+–) 18.Qe8 Kh7 19.Bd3 Bf5 (19...f5 20.Qe5 c6 21.Qc7+–) 20.Bf5 Qf5 21.Qa8 ed4 22.Bd4 b4 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.e3 e6 5.Nf3 Be7 6.d4 d5 7.Nbd2 0-0 8.c4 dc4 9.Bc4 Bd7 10.Be2 (10.0-0 Bd6+=) 10...b5 (10...a5 11.b5 Na7 12.a4=) 11.0-0 (11.Qc2 Nd5+=) 11...h6 (11...a5 12.ba5 Na5 13.Ne5=) 12.Rc1+= Be8 13.Nb3 Nd5 14.Nc5 (14.Re1 Nb6+/–) 14...Bc5 (14...a5 15.ba5 Na5 16.Qc2+=) 15.bc5 (15.Rc5 Nb6+/–) 15...Nce7 16.Bd3 c6 (16...b4 17.a4+=) 17.Qc2 a5 Black plans b4 18.h3 (18.Qd2 f5+/–) 18...b4 (18...f6 19.Bh7 Kh8 20.Be4+=) 19.ab4 (19.Qd2 ba3 20.Ba3 f6+=) 19...ab4 (19...Nb4!? 20.Qe2 Nd3 21.Qd3 f6+=) 20.Rb1 Bd7 21.Qb3 Qc7 22.Bc4 Ra7 23.Rfe1 Rfa8 24.e4+– Nf6 25.Bc1 Ng6 26.Bd2 e5?? 27.Bf7+– Kh7 28.Bg6 Kg6 29.d5 cd5+/– 30.ed5 Kh7? 31.Bb4 Kh8? 32.Qc3 Ra4? 33.d6 Qc6 34.Ba5 R8a5?? 35.Qa5?? Ra5–+ 36.Red1 Rc5 37.Ne5 Re5 38.Rbc1 Qa6 39.Rc7 Re6 40.Rdc1 Kh7 41.g3 Ne8 42.h4 Rd6 43.Kh2 Nc7 (43...Nc7 44.Kg1 Qa3 45.Rf1 Bh3 46.Rb1 Qf3 47.h5 Qg2) 0–1. Fournier,Frederic (1975) – chamu (1885), Active Blind, 2007.

4.Nf3 d6 5.d4 d5 6.e3 b5 (6...Bf5 7.Ne5=) 7.a4 (7.Bd3 Bg4+=) 7...Nb4 (7...Bf5 8.c3 Na7 9.Ne5+=) 8.c3+– Nc6 9.ab5 Na7 (9...Rb8 10.bc6 Rb2 11.Ba6 Ba6 12.Ra6+–) 10.ba6 c6 (10...Bf5 11.c4+–) 11.c4 g6 (11...Rb8 12.Bc3+–) 12.Bd3+– Ne4 (12...Rb8 13.Ra2+–) 13.cd5 Qd5 (13...cd5 14.Be4 de4 15.Ne5+–) 14.Qc2 f6?? (14...Bf5+–) 15.Be4 Qb5 (15...Bf5 16.Nc3 Qd7 17.Bf5 gf5 18.Na4+–) 16.Nc3 (16.Na3 Qa5 17.Nd2 Rb8+–) 16...Qc4 (16...Qb6 17.Bd3+–) 17.Nd2 Ba6 (17...Qe6+–) 18.Nc4 f5 19.Ra6 fe4 20.Qe4 Bg7 21.Qe6 Rf8 22.Ra7! Ra7 (22...Ra7 23.Nd6 Mate attack) 23.Nd6 Kd8 24.Qc8 1–0. michaelbuss (2840) – Ewell, ChessWorld.net, 2014.

4.Nf3 d6 5.e3 Bf5 6.Nc3 e5 7.Bc4 Be7 8.0-0 0-0. septika – stefanW, ChessWorld.net, 2011.

4.Nf3 d6 5.Bf6 gf6 6.d4 Bg7 7.e3 e5 8.d5 Ne7 9.Bc4 Bg4 10.h3=.

4.Nf3 g6 5.c4 Bg7=+ 6.e3 (6.Nc3 0-0=+) 6...d6 (6...0-0 7.Nc3=+) 7.d4= 0-0 (7...d5 8.Bd3=) 8.d5 Nb8 (8...Na7 9.Nc3=) 9.Be2+= c6 10.0-0 cd5 11.cd5 Nbd7 12.Bd4 Nb6 (12...b5 13.Nc3+=) 13.Nc3 Bf5 14.Qb3 Rc8 15.Rac1 Ne4 (15...Re8 16.h4+=) 16.Ne4 Rc1 17.Rc1 Be4 18.Nd2 Bd5?? (better 18...Bf5 19.Bg7 Kg7+–) 19.Bb6+– Bb3 (19...Qb6 20.Qd5 Rb8 21.Ne4+–) 20.Bd8 Rd8 (20...Bd1 21.Bd1 Rd8 22.Rc7+–) 21.Nb3 Bb2 22.Rc7 Ba3 (22...b5 23.Nd4 d5 24.Re7 Ba3 25.Ra7 Bb4 26.Ra6+–) 23.Rb7 Rc8 24.Ba6 Rc3 25.Nd2 Rc1 (25...Rc2 26.Nf3+–) 26.Bf1 e6 (26...d5+–) 27.Nc4 Rb1 (27...Ra1 28.Nd6 Rb1 29.Nf7 Rb4+–) 28.Na3 (28.Na3 Rc1 29.Nc4+–) 1–0. GuestSDVS – GuestVPLW, freechess.org, 2020.

4.e3 e5

5.c4 d6 6.d3 Ng4 (6...Be7 7.Nf3=) 7.h3 Nf6 8.Nf3 Nh5 (8...Be7 9.d4 e4 10.d5 ef3 11.dc6 fg2 12.Bg2=) 9.Be2 (9.Ne5 de5 10.Qh5 g6+/–) 9...Nf6= 10.Nbd2 g6 (10...Be7 11.0-0+=) 11.0-0 Bg7 12.e4 (12.d4 ed4 13.ed4 0-0+=) 12...0-0 13.Nh2 (13.Bc3 Re8=) 13...b6 14.Ng4 Ng4 15.Bg4 Bg4 16.Qg4 Ne7 (16...Bh6 17.Rad1=) 17.f4 ef4 (17...f5!? 18.ef5 Nf5 19.fe5 Be5=) 18.Bg7+/– Kg7 19.Rf4 Ng8 (19...f5 20.ef5 Nf5 21.Raf1+=) 20.Raf1+/– f6 21.Qe6 c6 22.Qg4 Ra7 23.Qe2 Raf7 24.Nf3 Nh6 25.Nd4 c5?? 26.Ne6+– Kh8 27.Nd8 Rd8 28.Rf6 Rdd7 29.Rf7 Nf7 30.Qg4 Re7 31.Qc8 Kg7 32.Qa6 cb4 33.ab4 Ne5 34.Rd1 Kh6 35.Qb6 Rf7 36.Qd6 Nf3 37.gf3 Rf3 38.Kg2 Rf4 39.Qf4 g5 40.Qf6 Kh5 41.e5 h6 42.e6 g4 43.e7 gh3 44.Kh2 Kg4 45.Rg1 Kh5 46.Qf5 Kh4 47.Qg4 (47.Qh3) 1–0. Fournier,Frederic (1910) – Scotch, Active (5/0), 2005.

5.Bc4 d5 6.Bb3 Bd6 7.Ne2 0-0 8.0-0 Bg4 9.Nbc3 Re8 (better is 9...d4!? 10.Nd5 Re8=+) 10.Nd5+= (< 10.Bd5 Nd5 11.Nd5 e4=) 10...Ne4?? (better is 10...Be6 11.Nf6 Qf6 12.Be6 Qe6+=) 11.f3+– Bf5 12.fe4 Be4 13.Ndc3 Rf8 (13...Bg6+–) 14.Ne4 Qh4 15.Nd6 cd6 16.Ng3 g6 17.Qf3 Qe7 18.Ne4 Kg7 19.Qf6 Qf6 20.Rf6 d5 (20...Rad8 21.Raf1 d5 22.Nc5+–) 21.Bd5 Rad8 22.Bc6 bc6 23.Be5 Rd5 24.Bc3 h6 25.Rc6 Kg8 26.Nf6 Kg7 27.Nd5 Kg8 28.Nf6 Kg7 29.Nd7 Kg8 30.Nf8 Kf8 31.Rf1 (31.Bf6 Ke8 32.Rd6 g5 33.Rd8) 31...h5 32.Ra6 (32.Bf6 Ke8 33.Rd6 h4 34.Rd8) 32...Kg8 33.b5 (33.Ra8 Kh7 34.Rh8) 33...Kh7 1–0. Mutley – Sincerely Sam, ChessWorld.net, 2003.

5.Bc4 d5 6.Bb3 Bd6 7.Ne2 Be6 8.0-0 0-0 9.f4 Qd7 10.fe5 Ne5 11.Nbc3 Bg4 (better 11...c6!?=+) 12.Rf6 (worse 12.Bd5 Nd5 13.Nd5 Nc4=+) 12...gf6 13.Nd5 Be7 (13...Qd8 14.Qf1 Kg7 15.e4+=) 14.Qf1 Be2 (14...Rae8 15.Ng3 Qc6 16.Qf4+–) 15.Qe2 Kg7 16.Rf1 Qd6 (16...a5 17.Qh5 ab4 18.Nf6 Bf6 19.Rf6+– (19.Be5?! Be5 20.Qg5 Kh8 21.Qe5 f6 22.Rf6 Rf6 23.Qf6 Qg7 24.Qg7 Kg7 25.ab4 b5+–)) 17.Qh5 1–0. Trokenheim,Marek (1815) – Leclerc,Sophie, FICGS, 2008.

5.Nf3 d6 6.h3 Be6 (6...Be7 7.Be2+=) 7.c4 (7.Be2 Be7+=) 7...b6 (7...e4 8.Ng5=) 8.Nc3 h6 (8...Qe7 9.Be2=) 9.d4 ed4 10.ed4 Be7?? (better is 10...Qe7=) 11.d5+– Bd5 (11...Bd7 12.dc6 Bc6 13.Bd3+–) 12.cd5 Nb8 13.Bd3 0-0 14.0-0 Nbd7 15.Re1 b5 16.Re3 Nh5 17.Nd4 Nf4 18.Nc6 Qe8 19.Ne7 Kh8 20.Ng6! Ng6 21.Re8 Rae8 22.Qd2 Re7 23.Re1 Re1 24.Qe1 Nge5 25.Bf5 Nf6 26.Ne4 Nd5 27.Be5 de5 28.Nc5 f6 29.Na6 c6 30.Qc1 Ne7 31.Bd7 Rd8 32.Bc6 Nc6 33.Qc6 1–0. mgriffin – valerypavlovich, net–chess.com, 2001. (=1.a3 Nc6 2.b4 a6 3.Bb2 Nf6)

5.Nf3 e4 6.Nd4 Nd4 7.Bd4 d5 8.c4 dc4 9.Bc4 b5 10.Be2 Be7 11.Nc3 0-0 12.0-0 c6 (12...Bf5 13.f3 Qd7 14.Rc1+=) 13.d3 ed3 14.Bd3 Bg4 (14...a5 15.Qc2+=) 15.Qc2+/– h6 16.f3 Bh5 (16...Bd7 17.Ne4+/–) 17.Rad1 Nd5 (17...Qe8 18.Qb3+/–) 18.Nd5 (18.Bh7 Kh8+–) 18...cd5+/– 19.Qb2 (19.g4 Bg6 20.Bg6 fg6 21.Qg6 Bf6+–) 19...f6 20.Rc1 Qd6 21.Bc5 (21.Bf5 Rfe8+/–) 21...Qe6+= 22.Be7 (22.Qd4 Rae8+=) 22...Qe7 (22...Qe3 23.Qf2 Qe7 24.Rfe1=) 23.Rfe1 Qe5 24.Qe5 fe5 25.Rc5 Rad8 26.Rec1 Rfe8 (26...e4 27.fe4 Bg6 28.Bb5 ab5 29.ed5=) 27.Bf1 (27.Rc6 e4 28.fe4 de4+=) 27...d4 (27...Bf7!?=) 28.ed4+/– 1–0. Fournier,Frederic (1820) – espadaajedrez (1645), Active (5/0), 2005.

4.Nf3 d5

5.e3 e6 6.d4 Bd6 7.Bd3 0-0 8.0-0 b5 9.Ne5 Qe8 10.Nd2=.

5.e3 Bg4

6.c4 e6 7.d4 Be7 8.Nbd2 0-0 9.Bd3 Bf5 10.Bf5 ef5 11.Qc2 Ne4 12.cd5 Qd5 13.0-0 Rac8 14.Rac1 Rfd8 15.Nc4 Bf6 16.Rfd1 g5 17.Nce5 Rd6 18.Qc4 (better is 18.Qa4+=) 18...Rcd8?? (better is 18...Ne5 19.Ne5 Be5 20.Qd5 Bh2 (worse is 20...Rd5 21.de5 Rd2 22.Rd2 Nd2 23.Rc2+=) 21.Kh2 Rd5+=) 19.Qd5+– Rd5 20.Nc6 bc6 21.Rc6 g4 22.Nd2 Nd6 23.Rdc1 Re8 24.Rc7 f4 25.e4! Ne4 26.Ne4 Re4+/– 27.Rd1 Re2 28.Bc3 Ra2 29.Rc6 Ra3 30.Rf6 Rc3 31.Ra6 Rd4–/+ 32.Rb1 Rb4! 33.Rf1 Kg7 34.h3 h5 35.hg4 hg4 36.Ra5 Kg6 37.Kh2 Rb2 0–1. ferminkatcho (1775) – ojciecubu, kurnik, 2011.

6.Be2 Qd6 7.h3 Bf3 8.Bf3 e5 9.d3 Be7 10.Nd2=.

6.h3 Bf3 7.Qf3 e5 8.b5 ab5 9.Bb5 e4 10.Bf6=.

6.Be2 e6

7.0-0 Bd6 8.d3 Qe7 9.Nbd2 e5 10.c4=.

7.c4 dc4 8.Bc4 Bd6 9.0-0 0-0 10.d4=.

7.c4 dc4 8.Bc4 Bd6 9.d4 0-0 10.0-0=.

7.c4 Bd6 8.0-0 dc4 9.Bc4 a5 (9...0-0 10.d4=) 10.b5 Ne7 (10...Ne5 11.Be2 Ned7 12.d3=) 11.h3+= Bh5 12.Nc3 (12.Bf6 gf6 13.d4 f5+=) 12...0-0= 13.g4 Bg6 14.Nh4 Qd7 15.Ng6 Ng6 (< 15...fg6 16.Qb3 Nfd5 17.Nd5 Nd5 18.Bd5 ed5 19.Qd5 Kh8 20.Be5+/–) 16.d4 e5 17.Ne2 (17.Qf3 ed4 18.ed4 Nh4=+) 17...e4 18.Ng3 Nh4 19.Be2 Rfe8 20.Rc1 (20.Qc2 Nf3 21.Kg2 h5=+) 20...Nd5 21.Qb3 Bg3 22.fg3 a4 23.Qa2 Nf3 (23...Ne3?! 24.gh4 Nf1 25.Rf1=) 24.Kg2?? (24.Bf3!? ef3 25.Rf3 Ne3 26.Rc5=+) 24...Ng5 (better is 24...Ne3 25.Kf2 Nf1 26.Kf1 h5–+) 25.Rh1 (25.Rc3!?–/+) 25…Re6?? (26.Rc5 Rd6=+; better is 25...Ne3 26.Kf2 Nd5–+) 0–1. Everett – Wochnik,Manfred, corr 3GMM–48, 1995.

7.c4 Bd6 8.c5 Be7 9.0-0 0-0 10.d3=.

7.d3 Bd6 8.0-0 Qe7 9.Nbd2 e5 10.c4=.

4.Nf3 e6

5.Nc3 b5 A) 6.e4 Bb7 (6...Be7 7.Bd3 0-0 8.0-0 d6 9.Qe2 Bb7 10.h3 Qd7) 7.Bd3 Bd6 8.0-0 Ne5 9.a4 Nd3 10.cd3 0-0; B) 6.h3 Bb7 (6...Bd6 7.e4 0-0 8.d4 Nh5 9.Bd3 Nf4 10.e5 Be7; 6...a5 7.Nb5 ab4 8.ab4 Ra1 9.Qa1 Bb4 10.e3 0-0; 6...h6 7.e4 Bb7 8.Be2 Nh5 9.g3 Be7 10.0-0 0-0) 7.e4 a5 8.ba5 Ra5 9.Bd3 Bc5 10.e5 Nh5; C) 6.g3 Bb7 (6...Bd6 7.Bg2 Bb7 8.0-0 h6 9.d4 0-0 10.e4 e5; 6...Be7 7.Bg2 0-0 8.0-0 Bb7 9.e4 a5 10.e5 Ng4; 6...h6 7.Bg2 Bb7 8.0-0 Be7 9.d4 d5 10.Qd2 0-0; 6...d5 7.Bg2 Bb7 8.0-0 Bd6 9.e3 0-0 10.Qe2 h6; 6...a5 7.Nb5 ab4 8.ab4 Ba6 9.e3 Nb4 10.Be5 Bb5) 7.Bg2 Bd6 8.0-0 0-0 9.d4 h5 10.Qd3 Ng4; D) 6.d4 a5 (6...Bb7 7.e4 d5 8.e5 Ne4 9.Bd3 Nb4 10.ab4 Bb4) 7.ba5 Na5 8.e4 Ba6 9.e5 Nd5 10.Qd2 Nb6; E) 6.e3 Bd6 (6...Bb7 7.Bd3 Bd6 8.0-0 0-0 9.Qe2 Qe7 10.Rfe1 Rab8) 7.Bd3 0-0 8.Qe2 Bb7 9.0-0 Qe7 10.Rfe1 Rab8.

5.Nc3 d5 A) 6.h3 Bd6 (6...e5 7.e3 Bd6 8.Be2 0-0 9.0-0 Bf5 10.d3 h6; 6...Be7 7.e3 e5 8.Na4 Qd6 9.Be2 0-0 10.0-0 h6; 6...d4 7.Na4 b5 8.Nc5 Bc5 9.bc5 0-0 10.e3 e5; 6...Bd7 7.d4 Bd6 8.e3 0-0 9.Be2 Ne4 10.0-0 f5; 6...h6 7.d4 Bd6 8.e3 0-0 9.Be2 b6 10.0-0 Bb7) 7.e3 0-0 8.d4 e5 9.de5 Ne5 10.Be2 c6; B) 6.d4 h6 (6...Bd7 7.g3 Bd6 8.Bg2 0-0 9.0-0 a5 10.b5 Ne7; 6...Bd6 7.e3 Bd7 8.Be2 h6 9.0-0 0-0 10.Qd2 Qe7; 6...h5 7.e3 Bd6 8.Bd3 Bd7 9.0-0 0-0 10.h3 Qe7; 6...b6 7.g3 Bb7 8.Qd3 Bd6 9.Bg2 0-0 10.0-0 h6; 6...g6 7.g3 Bg7 8.Bg2 0-0 9.0-0 Bd7 10.Qd3 Qe7; 6...Be7 7.e3 0-0 8.Bd3 Bd7 9.0-0 Bd6 10.e4 de4) 7.e3 Bd6 8.Bd3 Bd7 9.0-0 0-0 10.e4 Ne4; C) 6.g3 d4 (6...e5 7.d4 Bd6 8.de5 Ne5 9.Ne5 Be5 10.f4 Bc3; 6...Bd6 7.Bg2 e5 8.d3 0-0 9.0-0 h6 10.Qd2 Be6; 6...h6 7.Bg2 Bd6 8.0-0 e5 9.Ne1 d4 10.Na4 0-0) 7.Na4 e5 8.c3 dc3 9.Nc3 Be7 10.Bg2 0-0; D) 6.Rb1 e5 (6...Bd6 7.e3 e5 8.Be2 0-0 9.0-0 Bf5 10.h3 Qd7; 6...Be7 7.e3 0-0 8.d4 Bd7 9.Bd3 Bd6 10.0-0 a5) 7.e3 e4 8.Nd4 Nd4 9.ed4 a5 10.ba5 Ra5; E) 6.e3 Bd6 (6...e5 7.d4 e4 8.Ne5 Bd6 9.Nc6 bc6 10.Be2 a5; 6...Be7 7.d4 0-0 8.Bd3 Bd6 9.0-0 Bd7 10.h3 a5) 7.d4 0-0 8.Be2 Qe7 9.0-0 Bd7 10.h3 Kh8.

5.Nc3 Bd6 A) 6.g3 0-0 (6...b6 7.Bg2 Bb7 8.0-0 0-0 9.d4 Nd5 10.Qd3 Nc3; 6...b5 7.Bg2 0-0 8.0-0 Bb7 9.d4 Ng4 10.e4 e5; 6...Qe7 7.d4 0-0 8.e4 e5 9.d5 Nd4 10.Bg2 Nf3; 6...h6 7.Bg2 0-0 8.0-0 Be7 9.e4 d5 10.e5 Ne4) 7.d4 b6 8.e4 Be7 9.Bd3 Bb7 10.0-0 d5; B) 6.e4 0-0 7.d4 Nh5 8.g3 b5 9.Bd3 f6 10.0-0 g6; C) 6.h3 b5 (6...Qe7 7.e4 0-0 8.d4 Bf4 9.g3 Bh6 10.Bd3 e5; 6...0-0 7.e3 b6 8.Bc4 Bb7 9.0-0 b5 10.Bd3 Qe7; 6...b6 7.e3 0-0 8.Bc4 Bb7 9.0-0 b5 10.Bb3 Ne5) 7.e4 0-0 8.d4 Nh5 9.Bd3 Nf4 10.e5 Be7; D) 6.e3 b6 (6...0-0 7.Bd3 b5 8.Qe2 Bb7 9.0-0 Qe7 10.Rfe1 Rab8; 6...b5 7.Bd3 0-0 8.Qe2 Bb7 9.0-0 Qe7 10.Rfe1 Rab8) 7.Bd3 Bb7 8.0-0 0-0 9.g3 h6 10.Qe2 a5.

5.Nc3 Be7 A) 6.g3 d5 (6...0-0 7.Bg2 e5 8.e4 d5 9.ed5 Nd5 10.0-0 Be6; 6...h6 7.Bg2 0-0 8.0-0 d5 9.d4 Re8 10.Re1 b6; 6...Ng4 7.d4 0-0 8.Bg2 d5 9.0-0 f5 10.h3 Nf6; 6...b5 7.Bg2 0-0 8.0-0 d5 9.d4 Bb7 10.Qd3 Qd6; 6...g6 7.Bg2 d5 8.0-0 0-0 9.d4 b6 10.Ne5 Bb7; 6...b6 7.Bg2 0-0 8.0-0 d5 9.d4 Bb7 10.Qd3 Qd7) 7.Bg2 0-0 8.0-0 d4 9.Na4 e5 10.c3 d3; B) 6.e3 d5 (6...0-0 7.d4 d5 8.Bd3 b6 9.0-0 Bb7 10.Qd2 h6; 6...e5 7.d4 e4 8.d5 ef3 9.dc6 fg2 10.cd7 Bd7; 6...h6 7.Bd3 0-0 8.0-0 e5 9.e4 d6 10.Bc4 Bg4; 6...g6 7.d4 0-0 8.Bd3 d5 9.0-0 Bd7 10.Qd2 Bd6) 7.d4 0-0 8.Bd3 Bd6 9.0-0 Bd7 10.h3 a5; C) 6.d4 0-0 (6...d5 7.e3 h6 8.Bd3 0-0 9.0-0 Bd7 10.Qe2 Ra7; 6...g6 7.e4 d5 8.e5 Nh5 9.Qd2 0-0 10.Be2 Bd7; 6...h6 7.e4 d5 8.Bd3 de4 9.Ne4 0-0 10.0-0 b6; 6...h5 7.e4 d5 8.Bd3 0-0 9.0-0 Ne4 10.Ne4 de4) 7.e3 d5 8.Bd3 Qd6 9.0-0 h6 10.Qe2 e5; D) 6.e4 0-0 (6...d5 7.ed5 ed5 8.Bd3 0-0 9.0-0 Re8 10.Re1 h6; 6...b6 7.Bd3 0-0 8.0-0 d6 9.Ne2 e5 10.h3 g6; 6...d6 7.Bd3 0-0 8.0-0 b6 9.Ne2 e5 10.h3 g6) 7.Bd3 d5 8.0-0 d4 9.Na4 e5 10.Re1 h6.

5.Nc3 g6 A) 6.h3 d5 (6...Bg7 7.e3 d5 8.Be2 0-0 9.d4 Qd6 10.0-0 Bd7; 6...Be7 7.e4 0-0 8.Bd3 d5 9.0-0 d4 10.Na4 e5; 6...Bd6 7.e3 0-0 8.Bd3 b5 9.0-0 Bb7 10.Qe2 Qe7; 6...Qe7 7.e3 Bg7 8.Bd3 0-0 9.0-0 d5 10.Qe2 Bd7) 7.e3 e5 8.d4 e4 9.Ne5 Bd6 10.Nc6 bc6; B) 6.e3 d5 (6...Be7 7.d4 d5 8.Bd3 Qd6 9.0-0 0-0 10.h3 e5; 6...Bg7 7.Bd3 d5 8.0-0 0-0 9.h3 Bd7 10.Qe2 Qe7; 6...b6 7.Bd3 Bg7 8.0-0 0-0 9.Qe2 Bb7 10.Rad1 d5; 6...d6 7.Bd3 Bg7 8.0-0 0-0 9.h3 Bd7 10.Qe2 Nd5) 7.Bd3 Bd6 8.0-0 0-0 9.Re1 Bd7 10.h3 Re8; C) 6.g3 d5 (6...Bg7 7.Bg2 0-0 8.0-0 d5 9.d4 Bd7 10.Qd3 Qe7; 6...Bh6 7.Bg2 0-0 8.0-0 d5 9.d4 Qd6 10.Qd3 Bd7; 6...Be7 7.Bg2 0-0 8.0-0 d5 9.d4 b6 10.Qd3 Bb7; 6...Qe7 7.b5 Na5 8.e3 Bg7 9.Bd3 0-0 10.0-0 e5; 6...b6 7.Bg2 d5 8.0-0 Bg7 9.d4 0-0 10.Qd3 Bb7; 6...d6 7.Bg2 Bh6 8.d4 0-0 9.0-0 Bd7 10.e4 Qe7) 7.Bg2 Bd6 8.0-0 e5 9.Ne1 Be6 10.e4 de4; D) 6.Rb1 d5 (6...Bd6 7.e3 0-0 8.Bd3 b6 9.0-0 Bb7 10.h3 Ne5; 6...Bg7 7.e4 0-0 8.Bd3 d5 9.0-0 d4 10.Na4 Qd6) 7.e3 Bg7 8.Be2 0-0 9.0-0 e5 10.d4 e4; E) 6.e4 Bg7 7.Bd3 d5 8.ed5 Nd5 9.0-0 0-0 10.g3 Nc3.

5.e3= b5 6.c4 (6.Nc3 Bd6 (6...Bb7 7.Bd3 Bd6 8.0-0 0-0 9.h4 Qe7 10.Qe2 Ne5) 7.Bd3 Bb7 8.0-0 0-0 9.Qe2 Qe7 10.Rab1 h6; 6.Bd3 Bb7 (6...Bd6 7.e4 Ng4 8.Bg7 Rg8 9.Bb2 Nge5 10.Ne5 Ne5) 7.0-0 Bd6 8.h3 0-0 9.e4 Nh5 10.e5 Be7) 6...bc4 7.Bc4 d5 (7...Bb7 8.Nc3+= Bd6 9.0-0 0-0 10.Qc2 a5) 8.Bb3+= (8.Bd3 Bd6 9.Nc3 e5 10.e4 d4) 8...Bd7 (8...Bd6 9.Nc3+= 0-0 10.0-0 Bb7) 9.Qc2 (9.0-0 Bd6+= 10.Qc2 0-0; 9.Nc3 Bd6 10.Qc2 0-0) 9...Bd6= 10.Nc3 (10.0-0 0-0) 10...Ne7 (10...0-0 11.d4=) 11.Na4 a5 (11...Nf5 12.Nc5 0-0 13.Nd7 Nd7 14.0-0+–) 12.Nc5 ab4 (12...0-0 13.0-0+=) 13.ab4 Ra1 14.Ba1 Qb8 (14...0-0+=) 15.Qc3 (15.Nd7!? Nd7 16.Ba4+–) 15...Bb5 (15...Bc5 16.bc5 Ne4 17.Qg7=+) 16.d3 (16.Nd4 Be5=) 16...Rg8 (16...0-0!?=) 17.Nd4 (17.0-0 Nc6+–) 17...c6 (17...Nc6 18.Nc6 Bc6 19.0-0+=) 18.h3 (18.g3 g5+–) 18...Nd7+= 19.0-0 g5 20.Nb5 Qb5 21.Ba4 Qb6 22.Rc1 (22.d4 g4 23.hg4 Rg4+–) 22...g4 (22...h5 23.Qc2+=) 23.hg4 Rg4 24.Qh8 (better 24.d4+=) 24...Rg8? (better 24...Nf8!? 25.Bc3 Rg8+=) 25.Nd7+– (25.Qh7?! Nf8 (worse 25...Bc5 26.bc5 Qa6 27.Bc2+–) 26.Qh4 Nfg6=) 25...Kd7 26.Qh7 (better 26.Rc6 Rg2 27.Kg2 Nc6 28.Qh7+–) 26...Qb8? (better 26...Ra8 27.Bd1 Qb4=) 27.Qf7+– Qb4 (27...Rc8 28.Bc3 d4 29.ed4 Rf8+–) 28.Bc6 Kd8 (28...Kc7 29.Qe6 Nc6 30.Qg8+–) 29.Qe6 Nc6 30.Qg8 Kd7 31.Qd5 (31.Qd5 Ne7 32.Qg5+–) 1–0. Zahn,Richard (2025) – Feldhaus,Sebastian (1765), Niederrhein–ch, 2005.

5.e3= d5 A) 6.Nc3 e5 (6...Bd6 7.Bd3 0-0 8.0-0 e5 9.e4 d4 10.Nd5 Be6) 7.d4 e4 8.Ne5 Bd6 9.Nc6 bc6 10.Be2 a5; B) 6.Bd3 Bd6 (6...Bd7 7.c4 Be7 8.Nc3 0-0 9.0-0 dc4 10.Bc4 e5; 6...h6 7.Nc3 Bd6 8.0-0 0-0 9.Qe2 e5 10.e4 d4) 7.c4 dc4 8.Bc4 0-0 9.Nc3 b5 10.Bb3 Bb7; C) 6.Be2 Bd6 (6...Bd7 7.c4 Bd6 8.c5 Be7 9.Nc3 0-0 10.0-0 e5; 6...Be7 7.Nc3 0-0 8.0-0 Bd6 9.b5 ab5 10.Nb5 e5; 6...h6 7.c4 Be7 8.Nc3 0-0 9.Qc2 dc4 10.Bc4 e5) 7.c4 0-0 8.Nc3 a5 9.b5 Ne5 10.Ne5 Be5; D) 6.h3 Be7 (6...Bd6 7.c4 0-0 8.Nc3 Bd7 9.c5 Be7 10.d4 b5) 7.Bd3 Bd6 8.Nc3 e5 9.e4 d4 10.Ne2 Bd7; E) 6.g3 Bd6 (6...h5 7.Nc3 Bd6 8.Bd3 e5 9.e4 d4 10.Na4 0-0) 7.c4 0-0 8.Nc3 Bd7 9.Be2 a5 10.b5 Ne5; F) 6.c4= Be7 (6...Bd6 7.Nc3 0-0 8.Qb3 a5 9.b5 Ne5 10.cd5 ed5; 6...h6 7.Nc3 Bd6 8.c5 Be7 9.d4 0-0 10.Bd3 b6; 6...h5 7.Nc3 Be7 8.cd5 ed5 9.d4 Bf5 10.Bd3 Qc8) 7.cd5 ed5 8.Bd3 0-0 9.0-0 Bg4 10.h3 Bh5.

5.e3 Be7 6.Bc4 0-0 7.Qe2 d5 8.Bb3 Ne4 9.Nc3 Bf6 10.0-0 Nc3 11.Bc3 Bc3 12.dc3 Qf6 13.Nd4 Ne5 14.Rfe1 Ng6 15.a4 Nh4 16.g3 Qg6 17.Nf3 Qg4?? (better 17...Nf3 18.Qf3 a5=+) 18.Nh4+– Qg5 19.f4 Qf6 20.Rab1 h6 (20...Qc3 21.Nf3 Rd8+–) 21.Qd3 Bd7 22.e4 e5 (22...c6 23.a5+–) 23.f5 (23.fe5!? Qe5 24.Bd5 Rfd8+–) 23...c6 24.ed5 cd5 25.Bd5 Kh8 (25...Ba4 26.Ra1 Bc6 27.Bc6 Qc6 28.Re5 Rac8+–) 26.Bb7 (better 26.a5 Bc6 27.Bc6 Qc6 28.Re5+–) 26...Qb6 27.Kf1 Qb7 28.Re5?? (better 28.Qe4 Bc6 29.Qe5 Ba4 30.Kg1+–) 28...Qh1–/+ 29.Ke2 Qb1 30.Qd7 Qc2 31.Kf3 (better 31.Qd2!? Qa4 32.f6=+) 31...Qc3–+ 32.Kg4?? (better 32.Re3 Qc1 33.Kf2 Qb2 34.Kf3–+) 32...Qe5 33.h3 (33.Kh3–+) 33...Qe4 34.Kh5 Qe3 35.g4 Qg5 mate 0–1. pieeater – stefanW, ChessWorld.net, 2012.

5.e3= g6 A) 6.Bd3 Bg7 (6...d5 7.Ne5 Ne5 8.Be5 Bd6 9.Bd6 Qd6 10.Nc3 e5; 6...Be7 7.0-0 0-0 8.h3 d5 9.Qe2 Qd6 10.Nc3 e5) 7.c4 0-0 8.Nc3 d5 9.0-0 e5 10.cd5 Nd5; B) 6.h3 Bg7 (6...d5 7.Nc3 Bg7 8.d4 0-0 9.Bd3 Bd7 10.0-0 Qe7; 6...Be7 7.Bd3 0-0 8.Nc3 d5 9.0-0 e5 10.e4 d4; 6...b6 7.Nc3 Bb7 8.Bd3 Bg7 9.0-0 0-0 10.Qb1 d5) 7.Nc3 0-0 8.Be2 e5 9.0-0 d5 10.d4 ed4; C) 6.g3 d5 (6...Be7 7.Bd3 0-0 8.0-0 d5 9.Qe2 Bd7 10.Re1 Re8; 6...Bg7 7.Nc3 0-0 8.d4 d5 9.Bd3 Bd7 10.0-0 Qe7; 6...d6 7.Nc3 e5 8.d4 ed4 9.Nd4 Ne5 10.h3 Bd7; 6...b6 7.Bg2 Bb7 8.0-0 Bg7 9.Nc3 0-0 10.Re1 d5; 6...Bd6 7.Bd3 0-0 8.Nc3 b5 9.0-0 Bb7 10.Qe2 Qe7) 7.Nc3 Bd6 8.d4 0-0 9.Bg2 b6 10.0-0 Bb7; D) 6.c4 Bg7 (6...b6 7.Nc3 Bg7 8.Bd3 Bb7 9.0-0 0-0 10.Qc2 Qe7; 6...d6 7.Nc3 Bg7 8.Bd3 Bd7 9.0-0 0-0 10.Qe2 e5; 6...Qe7 7.Nc3 Bg7 8.Bd3 0-0 9.0-0 b6 10.h3 Bb7; 6...Bd6 7.Nc3 0-0 8.Bd3 b6 9.0-0 Bb7 10.Ne4 Ne4; 6...Be7 7.Nc3 0-0 8.Be2 b6 9.0-0 Bb7 10.d4 d5) 7.Nc3 0-0 8.Bd3 Ng4 9.0-0 Nge5 10.Be2 Nf3; E) 6.Be2 Bg7 (6...d5 7.0-0 Bg7 8.Ne5 Qd6 9.Nc6 Qc6 10.Bd4 0-0; 6...Qe7 7.g4 h6 8.Nc3 d5 9.0-0 Bg7 10.h3 e5; 6...d6 7.Nc3 Bg7 8.0-0 0-0 9.d4 d5 10.Qd3 b6; 6...Be7 7.0-0 0-0 8.c4 d5 9.Nc3 e5 10.cd5 Nd5; 6...b6 7.Nc3 Bg7 8.0-0 0-0 9.d4 d5 10.Bd3 Qd6; 6...Bd6 7.e4 Be7 8.e5 Nd5 9.Nc3 0-0 10.0-0 d6) 7.c4 0-0 8.Nc3 d6 9.0-0 e5 10.Qc2 Bf5; F) 6.Nc3 d5 (6...Bg7 7.Bd3 0-0 8.0-0 d5 9.h3 Bd7 10.Re1 Ne4; 6...Be7 7.Bd3 0-0 8.0-0 e5 9.Qe2 d5 10.e4 d4; 6...d6 7.Bd3 Bg7 8.0-0 0-0 9.h3 Bd7 10.Qe2 Nd5; 6...b6 7.Bd3 Bg7 8.0-0 0-0 9.Qe2 Bb7 10.h3 d5) 7.Bd3 Bd6 8.0-0 0-0 9.Re1 b6 10.h3 Bb7.

5.e3= h6 A) 6.Nc3 d5 7.Bd3 Bd6 8.0-0 0-0 9.Qe2 Bd7 10.e4 d4; B) 6.Bd3 d5 (6...Be7 7.0-0 0-0 8.Nc3 d5 9.Ne2 Bd7 10.c4 dc4) 7.Nc3 Bd6 8.0-0 0-0 9.Qe2 e5 10.e4 d4; C) 6.Be2 Be7 (6...d5 7.c4 Bd6 8.c5 Be7 9.0-0 0-0 10.Qb3 b6; 6...b6 7.Nc3 Bd6 8.0-0 Bb7 9.e4 a5 10.b5 Na7; 6...Bd6 7.Nc3 0-0 8.Bd3 b5 9.0-0 Bb7 10.Qe2 Qe7; 6...d6 7.0-0 Be7 8.Nc3 0-0 9.d4 d5 10.Bd3 b6) 7.c4 0-0 8.Nc3 e5 9.0-0 d6 10.d4 ed4; D) 6.h3 d5 (6...Be7 7.Bd3 d5 8.0-0 0-0 9.Re1 Bd7 10.Nc3 Bd6; 6...d6 7.Nc3 d5 8.Bd3 Bd6 9.0-0 0-0 10.Re1 Bd7) 7.Bd3 Bd6 8.0-0 0-0 9.c4 dc4 10.Bc4 e5; E) 6.c4 Bd6 (6...b6 7.Nc3 Bd6 8.Bd3 Bb7 9.0-0 0-0 10.Qb3 Qe7; 6...Be7 7.Nc3 0-0 8.Qc2 d6 9.Bd3 e5 10.0-0 Be6; 6...d5 7.Nc3 Be7 8.Be2 0-0 9.Qc2 dc4 10.Bc4 e5) 7.Nc3 0-0 8.Bd3 b6 9.0-0 Bb7 10.Qb3 Qe7.

3.b5 ab5

4.e3 Na7 5.Nf3 c5 (5...Nf6 6.a3=+) 6.c4 (better 6.Nc3!?+=) 6...bc4–/+ 7.Bc4 d5 8.Be2 Nc6 9.Bb5 (9.0-0 Nf6–/+) 9...Bd7 10.0-0 Ra5 (10...Nf6 11.Nc3–/+) 11.a4 Nf6 12.Nc3 (12.d3 e6–/+) 12...Bg4 (12...e6 13.Qb1–/+) 13.Re1 (13.h3 Bd7=+) 13...e6 14.h3 Bh5 15.g4 Bg6 16.Ne5 (16.d3!?–/+) 16...Qc7–+ 17.Ng6 hg6 (17...fg6?! 18.g5 Nd7 19.Qg4+=) 18.Qf3 Bd6 (18...Kd8–/+) 19.g5 (19.e4 d4 20.Nd5–/+) 19...Nd7–+ 20.Bc6 (20.Be2!? Qd8 21.Qg2 0-0–+) 20...bc6 21.Ne2 f6 (21...0-0 22.Bc3 Ra6 23.d4–+) 22.gf6 gf6 23.Qg4 (23.Bc3 Ra8–+) 23...Kf7 24.Kh1 (24.Nf4 Nf8 25.Ng2–+) 24...g5 25.f4 (25.Kg2–+) 25...gf4 (better 25...Rh4 26.Qg2 g4–+) 26.Nf4=+ Bf4 27.ef4 f5?? (better 27...Qd6=+) 28.Qg7 Ke8 29.Re6 Kd8 30.Qh8 (30.Qh8 Nf8 31.Qf8 Kd7 32.Qe8) 1–0. DEFFM – noelsvillanueva, freechess.org, 2019.

4.e3 b4 5.Nf3 e6 6.d4 (6.Bb5 Nf6=+) 6...d5 (6...Nf6 7.a3–/+) 7.Bb5 (7.c4 Nf6–/+) 7...Bd7 8.0-0 Bd6 9.c4 bc3! 10.Nc3 (10.Nc3 Nf6 Combination; 10.Bc3 Nf6 Combination) 10...Na5 (10...Nf6 11.a4–/+) 11.Bd7 (11.Bd3 Nf6=+) 11...Qd7 12.e4 de4 (12...Ne7 13.ed5 ed5 14.Ne5 Be5 15.de5–/+) 13.Ne4 Be7 (13...Ne7 14.d5 Nd5 15.Bg7–/+) 14.Ne5 (14.d5 Nf6 (worse 14...Qd5 15.Bg7 Qe4 16.Bh8+–; 14...ed5?! 15.Nc5 Qg4 16.h3=) 15.Nf6 gf6 16.de6 fe6=+) 14...Qd5 15.Nc3 Qd6 (better 15...Qd8=) 16.Nb5+– Qb6 17.Nc7! Qc7 18.Qa4 Kf8 19.Nd7 Ke8 20.Nb6 Qc6 21.Qc6 Nc6 22.Na8 Bd8?? (better 22...Nf6 23.Nb6 Bd8+–) 23.d5!+– ed5 (23...f6 24.dc6 bc6 25.Rab1+–) 24.Bg7 Kd7 (24...Bf6 25.Bh8 Bh8+–) 25.Bh8 Kc8 (25...Bf6 26.Bf6 Nf6 27.Rfc1+–) 26.Rab1 1–0. DEFFM – theplayerjtox, freechess.org, 2018.

4.e4 Na7 5.d4 e6 6.Nf3 d5 7.Nbd2 c6 (7...de4 8.Ne4 Nf6 9.Nf6 Qf6 10.Bd3=+) 8.Be2 (8.Bd3 de4 9.Ne4 Nf6=+) 8...Bb4 (8...de4 9.Ne4 Nf6 10.Bd3=+) 9.0-0= Nf6 10.c3 Ba5 (10...de4 11.Ne4 Ne4 12.cb4=+) 11.e5= Ng8 12.Nb3 Bb6 13.Ne1 f5 14.Nc5 Bc5 15.dc5 Bd7 16.f4 (16.a4 ba4 17.Ra4 Ne7=) 16...Qe7 17.Nd3 0-0-0 (better is 17...Nh6=) 18.a4+/– Kc7 19.a5 (19.Qb3 g5+/–) 19...g5 20.a6 g4 (20...gf4 21.Rf4 Ra8 22.ab7 Kb7 23.Ra3+=) 21.Nb4 (21.Qd2!?+/–) 21...Qc5= 22.Qd4 (better is 22.Kh1!?=) 22...Qd4–/+ 23.cd4 b6 24.Rfc1= Ne7 25.Ba3 Nec8 26.Nd3 27.Be7?? Ne7–+ (28.Kf2 h4–+) 0–1. gtate (2060) – zekota (2105), net–chess.com, 2006.

4.e4 Na7 5.d4 e6 6.Nf3 d5 7.Bd3 de4–/+ 8.Be4 Nf6 9.Bd3 Bd6 10.Nbd2 0-0 11.0-0 Nd5 12.Ne4 Nf4 13.Nd6=+ Qd6 14.a4 Bd7 (15.ab5 Nb5=+ (< 15...Bb5 16.c4 Qb4 17.Ba3+/–; 15...Nd3?! 16.Qd3 Nb5 17.c4=)). Sonara Valdes,Rouget – Wochnik,Manfred, corr 3GMM–48, 1995.

4.Nf3 b4 5.e3=+.

4.Nf3 d6 5.e4 (5.e3=+) 5...e5 (5...b4!?=+) 6.Bb5= Bd7 7.0-0 Nf6 8.d4 Ne4 (8...Ra5 9.Nc3=) 9.de5 Ne5 (9...de5 10.Qe2 Nc5 11.Bc6 Bc6 12.Ne5+–) 10.Ne5 Bb5 (10...de5!? 11.Qd5 Nc5 12.Qe5 Ne6+=) 11.Qd5+– Qe7?? (better 11...de5 12.Qb5 Qd7 13.Qb7 Ra4 14.Qb8 Qd8 15.Qb5 Qd7 16.Qe5 Qe7+–) 12.Qb5 (12.Qb7 Ra5 13.Qc8 Qd8 14.Qd8 Kd8 15.Nf7 Kd7 16.Nh8 Bf1 17.Kf1 Rb5+–) 12...c6 13.Nc6! Qd7 (13...bc6 14.Qc6 Double attack) 14.Nd4 Qb5 15.Nb5 0-0-0 (15...Kd7 16.f3 Nc5 17.Rd1+–) 16.Re1 (16.Rd1 Kd7+–) 16...d5 17.N1c3 Nd6 (17...Nc3 18.Bc3 Kd7 19.Re5+–) 18.Rad1 (18.Nd6 Rd6 19.Rad1 Rb6+–) 18...Nb5 19.Nb5 f6 20.Bd4 Bb4 (20...Kd7 21.Be3 Bb4 22.c3+–) 21.c3 Ba5 22.Re7 Rd7 23.Na7 Kc7 24.Re6 (24.Rd7 Kd7 25.c4 Bc7 26.cd5 Re8+–) 24...Kb8 25.Nb5 h6 (25...Rhd8 26.Rde1+–) 26.Ba7 Ka8 27.Rd4 Bc7 28.Ra4 Rc8 29.Nc7 Rdc7 30.Be3 Kb8 31.Bf4 g5 32.Bd6 b6 (32...Rd8 33.Bc7 Kc7 34.Rf6+–) 33.Kf1 (33.Bc7 Kc7 34.Rf6 Kb7+–) 33...Kb7 34.Bc7 Rc7 35.Ra3 f5 36.Rh6 Rc4 (36...Rc6 37.Ra7! Ka7 38.Rc6+–) 37.Rb3 Rc6 1–0. DEFFM – GuestXVNF, freechess.org, 2018.

2.Bb2 d5

(--> 1.b4 d5 2.Bb2 a6).

3.a3 Nc6 (--> 2.Bb2 Nc6 3.a3 d5).

3.e3 e6 4.Nf3 Nf6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.Nf3).

3.e3 Nf6 4.c4 e6 5.a3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.c4).

3.Nf3 e6 4.e3 Nf6 5.a3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Be7 5.e3 0-0 6.Be2 a6).

3.Nf3 Bf5 (--> 1.b4 d5 2.Bb2 Bf5 3.Nf3 a6).

3.Nf3 Bf5 4.e3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 e6 4.Nf3 a6).

2.Bb2 d6

(--> 1.b4 d6 2.Bb2 a6).

3.a3 e5 (--> 1.b4 e5 2.Bb2 d6 3.a3 a6).

3.a4 e5 (--> 1.b4 e5 2.Bb2 d6 3.a4 a6).

3.c4 e5 (--> 1.b4 e5 2.Bb2 d6 3.c4 a6).

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

3.c4 e5 4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 a6).

3.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 a6).

3.e3 e5 4.c4 Be6 5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 a6).

3.e3 e6 (--> 1.b4 e6 2.Bb2 d6 3.e3 a6).

2.Bb2 e6

(--> 1.b4 e6 2.Bb2 a6).

3.a3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a6).

3.a4 b6 4.e3 Nf6 5.b5 ab5 6.ab5 Ra1 7.Ba1 d6 8.Nf3 Bb7 9.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 d6 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1).

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

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

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

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

3.e3 d6 (--> 1.b4 e6 2.Bb2 d6 3.e3 a6).

3.e3 f5 (--> 1.b4 f5 2.Bb2 e6 3.e3 a6).

3.e3 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.e3 a6).

3.e3 Nf6 4.a3 b5 5.c4 Bb7 6.Nf3 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6 6.c4).

3.e3 Nf6 4.a3 b5 5.Nf3 Bb7 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6).

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

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

3.e3 Nf6 4.b5 b6 5.a4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 b6).

3.Nf3 b5 4.a3 Bb7 5.e3 Nf6 (--> 1.b4 b5 2.Bb2 Nf6 3.e3 Bb7 4.Nf3 e6 5.a3 a6).

2.Bb2 f5

3.e4 fe4 4.Nc3 Nf6 5.Ne4 Nc6 6.Bc4 Nb4 (6...Ne4? 7.Bg7 d5 8.Bh8+–) 7.Nf6 (7.Qe2 Ne4 8.Bg7 d5 9.Qh5 Kd7 10.Bh8 Nc2 11.Kd1 Na1 12.Qd5 Nd6 13.Ba1 c6+=) 7...ef6+= 8.Qh5 (8.Bb3 h5 9.Ne2 d5) 8...g6 9.Qe2 Be7 10.Bf6 Nc2 11.Kd1 Na1 12.Bh8 d5 13.Bd3 d4 14.Nf3 Bg4 15.Bf6 Qd7 16.Be7 Qe7 17.Re1 Qe2 18.Re2 Kf8+= 19.Kc1 Bf3 20.gf3 c5 21.Kb2 b5 22.Re6+/– Kf7 23.Rc6 c4 24.Rc7 Kg8 25.Be4+/– Rb8 26.Ka1+– c3? 27.dc3 dc3 28.Bd5 Kh8 29.Rc3 Kg7 30.Rc7 Kh6 31.Bb7 a5 32.Bd5 Re8 33.h3 Re1 34.Kb2 Re2 35.Kc3 Rf2 36.Ra7 b4 37.Kb3 Rh2 38.Be6 1–0. Tiedemann,Joern (1940) – Brosmann,Peter, remoteschach.de, 2009.

3.g3 e6 4.Bg2 Nf6 (4...Bb4?? 5.Bg7 d5 6.Bh8+–) 5.a3 d5 6.d3 Bd6 7.Nd2 0-0 8.Ngf3 c6 9.Qc1 Nbd7 10.c4 Qe7 11.0-0 Ng4 12.c5 Bc7 13.h3 Ngf6 14.Bc3 e5 15.Bb2 e4 16.Nd4 ed3 17.Nf5 Qe2 18.Re1 Qh5 19.Ne7 Kh8 20.Qd1 Qd1 21.Rad1 Rf7 22.Nf5 Ne4?? 23.g4 Ndf6 24.Bf6 Rf6?? 25.Ne4+/– de4 26.Be4 Bd7 27.Rd3 Rd8 28.Red1 Rf7 29.Nd6 Bd6 30.Rd6 Kg8 31.Kg2 Re7?? 32.f3 Kf8? 33.Kg3 Ke8? 34.R1d4 h6? 35.f4 Re6 36.f5 Rd6 37.Rd6 Bc8 38.Kf4 Rd6 39.cd6 Kd7 40.Ke5 1–0. linakip – pijany1mistrz, kurnik, 2012.

2.Bb2 f6

3.a4 d6 4.c4 (4.e4 e5=) 4...Nd7 5.d4 Nh6 (5...e5 6.e3=) 6.e4 g6 (6...e5 7.Nd2=) 7.f3 (7.Nf3 e5+=) 7...Bg7 8.g4 (8.Bd3 e5=) 8...0-0 (8...e5 9.h4=) 9.h4 e5 10.d5 (10.h5 g5=) 10...c6 (10...f5 11.g5 Nf7 12.ef5 gf5 13.Bd3=) 11.Bc1 (11.dc6 bc6 12.h5 Nf7 13.hg6 hg6+=) 11...cd5 (11...c5 12.Be3=) 12.cd5 (12.h5 g5 13.Qd5 Nf7+=) 12...b6 13.g5 fg5 (13...Nf7 14.h5=) 14.hg5 Nf7 15.Nh3 (15.Qd2 Re8+=) 15...Bb7 (15...a5 16.ba5 ba5 17.Qd3=+) 16.Be3+= a5 17.Qb3 (17.ba5 Ra5 18.Bb5 Nc5+=) 17...Qe7 (17...ab4 18.Qb4 Nc5 19.Qb2=) 18.ba5 Nc5 (better 18...Ra5 19.Nc3 Rfa8+=) 19.Bc5 (better 19.Qb6 Bc8 20.Bc5 dc5 21.Nd2+–) 19...bc5=+ 20.Qc3 (20.Na3 Bc8=+) 20...Ng5 21.Nd2 (21.Ng5 Qg5 22.Ra3 Rf4–/+) 21...Nh3 (21...Bd5 22.Ng5 Qg5 23.Rb1–/+) 22.Rh3 (22.Bh3 Bh6=+) 22...Bc8 (22...Bd5 23.Rb1 Bf7 24.Bc4–/+) 23.Rh2 (23.Rh1 Qg5–/+) 23...Bf6 (23...Qg5 24.Nc4 Qg3 25.Rf2–/+) 24.Nc4 Bh4 25.Kd1 Ba6 (better 25...Bg3 26.Rb2 Qh4–/+) 26.Nb6? (26.Rb1 Bg3 27.Rg2 Qh4–/+) 26...Ra7?? (better 26...Bf1 27.Na8 Bg3–+) 27.Ba6=+ Ra6 28.Rb1 Bg5 (28...Bg3 29.Rh1=+) 29.Qc4 (29.Nc4 Qd7=) 29...Ra7 (29...Ra5 30.Qc3 Ra7 31.a5–/+) 30.a6 Bf4 (30...Rf3 31.Nc8 Qf7 32.Na7 (32.Nd6 Qf8 33.Qc5 Ra6–+) 32...Rf1 33.Kc2 Rb1 34.Kb1 Qa7 35.Qb5+–) 31.Rh1 Be3 32.Qf1 Qg5 (better 32...Bd4!?=+) 33.Qh3+= Qe7?? (33...h6 34.Rb2 Qf6 35.Nc4=) 34.Nc4 (better 34.Nc8 Qe8 35.Na7+–) 34...Bd4 (34...Bf4 35.Rb6 Rd8 36.Na5+–) 35.Rb6 Qg5? (35...Qe8 36.Rc6 (36.Nd6 Qa4 37.Kc1 Qa1 38.Kc2 Qc3 39.Kb1 Qd3 40.Kc1 c4–+) 36...Qf7 37.Ke2+–) 36.Rd6?? (better 36.Rb7 Rb7 37.ab7+–) 36...h5 (36...Qf4 37.Ke2+–) 37.Qe6 (better 37.Rb6+–) 37...Raf7?? (37...Kg7 38.Rd7 Rd7 39.Qd7 Rf7 40.Qh3+=) 38.a7?? (better 38.Qg6 Rg7 39.Qg5 (39.Qh5?! Qh5 40.Rh5 Rg1 41.Kc2 Rg2 42.Nd2 Rb8+=) 39...Rg5 40.Rh6+–) 38...Qg3?? (38...Kg7 39.Qh3+=) 39.Qh3 (better 39.Qg6 Qg6 40.Rg6 Rg7 41.Rg7 Kg7 42.Nb6+–) 39...Qh3 (39...Qg5 40.Rd7 Rd7 41.Qd7=) 40.Rh3 Ra7 (40...Kh7!?+–) 41.a5 (41.a5 Kg7 42.Rb6+=) 1–0. afsharian (1615) – siyervijay, lichess.org, 2017.

3.e3 e5 4.a3 (--> 1.b4 e5 2.Bb2 f6 3.a3 a6 4.e3).

3.e3 e5 4.Bd3 Bb4 5.Qh5 Kf8 6.Bh7 Qe8 (6...d5 7.a3 Bd6 8.Nf3=+) 7.Qe8= Ke8 8.Bg8 (8.Bg6 Kd8=) 8...Rg8=+ 9.Ne2 (9.a3 Ba5=+) 9...d5 10.c3 Bd6 11.0-0 (11.d4 b6–/+) 11...Rh8 12.h3 Nc6 (12...Bf5 13.Re1–/+) 13.d3 Bf5 14.d4 (14.Rd1 Ne7–/+) 14...Na5 15.Ng3 Bg6 (15...Bd3 16.Rd1 e4 17.Nf5–/+) 16.Nd2 (16.de5 fe5 17.Ba3 Nc4 18.Bd6 Nd6–/+) 16...Kd7 17.a4 (17.de5 fe5 18.e4 c6–/+) 17...b6 (17...ed4 18.cd4 b5 19.ab5 ab5 20.f4–+) 18.Ba3 (18.de5 Be5 19.f4 Bd6–/+) 18...Ba3 (18...ed4!? 19.ed4 Bf4–+) 19.Ra3 Kd6 (19...Bd3 20.Rc1–/+) 20.Rc1 (better 20.de5 fe5 21.e4=+) 20...b5?? (better 20...c5–/+) 21.ab5+– ab5 22.Nb3?? (better 22.Rca1+–) 22...Nb3–/+ 23.Rb3 c6 24.de5 fe5 25.Rd1? (25.e4 Kc5–/+) 25...Kc5?? (better 25...Bc2 26.Rbb1 Bb1 27.Rb1 Ra3–+) 26.Rb4 Ra2 (26...Ra4 27.Rc1–/+) 27.Rc1 (27.Rg4 Rh6–/+) 27…e4 0–1. Abdullaevich (1830) – dinasor (1995), lichess.org, 2020.

3.e3 e5 4.Bd3 Nc6 5.Qh5+– g6 6.Bg6 Ke7 (6...hg6 7.Qh8 Nh6 8.Qh7+–) 7.Bh7 Nh6 8.Bg6 d5 9.a3 (9...Bg7 10.Qf3+–) 1–0. Wall,Bill – Sonik, internet, 2003.

3.e3 g6 4.Be2 e5 5.Bf3 (5.a3 d5+=) 5...d6 (5...Bb4 6.Nc3=+) 6.a4 (6.c4 Ne7=) 6...Ne7 (6...d5 7.Ba3=+) 7.c4 (7.d4=) 7...Bd7 (better 7...d5!? 8.d4 e4=+) 8.Bb7+– Ra7 9.Bd5 (9.Bf3 Be6+–) 9...Nbc6 10.b5 ab5 (10...Nb4 11.Be4+=) 11.ab5+– Ra1 12.Ba1 (worse 12.bc6 Bg4 13.f3 Ra2=+) 12...Bf5?? (12...Nb4 13.Bf3 Bf5 14.e4 Nd3 15.Ke2 Nf4 16.Kf1+=) 13.d3?? (13.bc6 Nd5 14.cd5 Be4+–) 13...Qa8?? (better 13...Nd5 14.cd5 Na7+–) 14.Nd2 (better 14.Nc3!? Bd3 15.Bb2 Bf5 16.bc6 Bg7+–) 14...Qa2?? (better 14...Nd5 15.cd5 Nb4–/+) 15.bc6 (15.Bc6 Nc6 16.bc6 Bd3+–) 15...Nd5 16.cd5 Bd3 17.Ngf3 (17.f3 Qd5 18.Qb3 Qb3 19.Nb3 d5+–) 17...Qd5+– 18.e4 (better 18.Nb1!?+–) 18...Qc6+= 19.Nb3?? (better 19.Bb2+=) 19...Qe4–+ 20.Kd2 d5 (20...Bh6 21.Kc3 Be2–+) 21.Nc5?? (21.Ne1 Bh6 22.Kc3 Qc4 23.Kb2–+) 21...Bc5 22.Re1 Bb4 (better 22...Qc4!? 23.Qc1 Bb4 24.Bc3–+) 23.Bc3 Qc4 (better 23...Qf4 24.Kd3 Qc4 25.Kc2 Qc3 26.Kb1 Ba3–+) 24.Qa4=+ Qb5 (24...Kf7 25.Qb4 Qb4 26.Bb4=+) 25.Qb4 (25.Qa8!? Kf7 26.Qh8 Bc3 27.Kc3 Qc4 28.Kd2 Qc2 29.Ke3=) 25...Qb4=+ 26.Bb4 Bc4 27.Ra1 Kf7 (better 27...Kd7!?=+) 28.Ra7= Rc8 29.Ba5 e4 (29...Ke6!? 30.Bc7 d4+=) 30.Nd4+– h5 (30...f5!?+–) 31.Bc7+– (31.Rc7?! Rc7 32.Bc7 Bf1+–) 31...Bf1? (better 31...g5+–) 32.Be5 Ke8 (32...Kg8 33.Bf6 Re8+–) 33.Bf6 Bg2 (33...Bb5 34.Re7 Kf8 35.Ne6 Kg8 36.Rg7 Kh8 37.Ng5 Rc2 38.Kc2 Bd3 39.Kc1 e3 40.Rg6) 34.Re7 (34.Ne6 e3 35.fe3 Rc2 36.Kc2 Be4 37.Kd2 g5 38.Re7) 34...Kf8 35.Ne6 Kg8 36.Rg7 Kh8 37.Rc7 (37.Ng5 e3 38.fe3 Rc2 39.Kc2 Be4 40.Kd2 h4 41.Rg6) 37...Kg8+– 38.Rc8 (38.Rc8 Kf7 39.Nf4 Kf6 40.Ng2+–) 1–0. Akrapovik – jovicicdragi, lichess.org, 2019.

3.e3 Nh6 4.c4 Nf5 5.Nf3 Nc6 6.a3 e6 7.d4 Na7 8.Nc3 Be7 (8...d5 9.e4 de4 10.Ne4+=) 9.Bd3 Nh6 10.0-0 0-0 11.Qc2 f5 12.d5 c6 13.de6 de6 14.Rad1 Qc7 15.c5 Bd7 16.Na4 b5?? (better is 16...Bf6+/–) 17.cb6+– Qd8 18.ba7 Ra7 19.Bc4 Qc7 (19...Qe8 20.Bd4 Rb7 21.Nc5 Bc5 22.Bc5+–) 20.Be5 Qc8 (20...Qd8+–) 21.Nb6 Qe8 22.Nd7 Rd7 (22...Bb4 23.Ng5 Rf7 24.Be6+–) 23.Be6 Kh8 24.Rd7 Ng4 25.Bf5 Nh6 26.Bh7 Bf6 27.Bf6 gf6 28.Rfd1 Qc8 29.Qg6 (29.Qg6 Nf5 30.Bg8 Qd7 31.Rd7 Rf7 32.Bf7 Ne3 33.Qg8#) 1–0. Fournier,Frederic (1930) – Josephina, Chess.com (Tournoi ferme), 2012.

3.e4 Nc6 4.a3+= b5 (4...e5 5.Bc4=) 5.Nf3 (5.c4 Rb8+=) 5...e5 (5...d5 6.ed5 Qd5 7.d4+=) 6.c4 Nce7 (6...Rb8!?+=) 7.d4 (7.cb5 d5 8.ed5 Nd5+–) 7...d6 (7...ed4!? 8.cb5 a5+–) 8.cb5+– ab5 (8...f5 9.Nc3 fe4 10.Ne4+–) 9.Bb5 c6 10.Bc4 (10.Bd3 Ng6+–) 10...Bb7 (10...d5 11.ed5 e4 12.dc6 ef3 13.Qf3+–) 11.Nc3 (11.0-0 Ba6 12.Ba6 Ra6+–) 11...Ng6 12.Qb3 (12.0-0 d5 13.Bb3 N8e7+–) 12...d5 (12...Nh6 13.Bc1 ed4 14.Nd4+–) 13.ed5 Be7 (13...cd5 14.Nd5 Bd6+–) 14.dc6 Bc6 15.Bg8 Qd7 (15...Nf4 16.0-0-0 e4 17.Qf7 Kd7 18.d5+–) 16.0-0-0 (16.Qf7 Kd8 17.d5 Qe8 18.dc6 Qg8 19.Qg8 Rg8+–) 16...Bd6 (16...e4 17.Qf7 Kd8 18.Ne5 fe5 19.de5 Bg5 20.Kc2 Qd3 21.Rd3 ed3 22.Kb1+–) 17.de5 Ne5 18.Ne5 fe5 19.Rd6! Qd6 20.Qf7 Kd8 21.Rd1 Rg8 22.Rd6 (22.Rd6 Kc8 23.Rc6 Kd8 24.Rc7 Ra3 25.Qd7) 1–0. michaelbuss (2775) – johnhg57, ChessWorld.net, 2011.

3.e4 e5 4.a3 b5 5.d3 d6 6.Nf3 Nh6 7.Nbd2 Be7 8.Be2 0-0 9.0-0 (9.c4 f5+=) 9...Nc6 (9...f5 10.c4=) 10.c4 Be6 (10...f5 11.d4 fe4 12.Ne4+=) 11.cb5 (11.d4 Na7+–) 11...ab5+= 12.Nh4 (12.d4!? Na7 13.Qc2+–) 12...f5 (12...Nd4 13.Nhf3 Ne2 14.Qe2=+) 13.Nhf3 fe4 14.de4 Bg4?? (14...Qb8!?=) 15.Qc2 (better 15.Bb5!? Nb8 16.Qc2+–) 15...Na7+= 16.Qd3 (16.Bb5 Nb5 17.Qc4 Nf7 18.Qb5 Ng5 19.Ng5 Bg5 20.Qc4 Rf7+=) 16...Bg5 (16...Qd7 17.Bd1=) 17.h3 (17.Qd5 Nf7+=) 17...Bf3 (17...Bd2 18.Qd5 Nf7 19.hg4+=) 18.Nf3+– Bf4 (better 18...Nf7+–) 19.a4+– c6 20.ab5 Nb5 21.Ra8 Qa8 22.Ra1 (22.g3 Qe8+–) 22...Qb7 (better 22...Qc8 23.g3 Bg3 24.fg3 Qh3+–) 23.Nh4?? (better 23.g3+–) 23...Bg5 24.Nf5 (24.Qb3!? Nf7 25.Nf3+=) 24...Nf5= 25.ef5 Bf4 (25...Bf6 26.Qg3=) 26.Bg4 (26.Qc4!? Kh8 27.Qe6+=) 26...d5 27.Qe2 d4 (better 27...e4=+) 28.g3+– Bg5 29.Qe5 Bf6 30.Qe6 Kh8 31.Rc1 (31.Bf3 Nc3+–) 31...Rc8 (better 31...Nc3!?+=) 32.Bf3+– d3?? (better 32...Qb8+–) 33.Bc6 (worse 33.Bf6 gf6 34.Rc6 Rf8+–) 33…Qb6 (33...Qb6 34.Qc8 Qd8 35.Qd8 Bd8 36.Bb5 d2+–). alt20 – dragus, lichess.org, 2015.

3.e4 e5 4.a3 b5 5.Be5 fe5?? (better 5...d5 6.Bf4 de4+=) 6.Qh5+– g6 7.Qe5 Ne7 (7...Qe7 8.Qh8 Nf6 9.d3+–) 8.Qh8 c6 (8...d5 9.Bd3+–) 9.Nf3 d6 (9...d5 10.ed5 Qd5 11.Be2+–) 10.a4 ba4 11.Qh7 Be6 12.Nc3 c5 (12...a3 13.Ra3 Qb6 14.Ra4+–) 13.bc5 dc5 14.Ra4 Qd7 (14...Qd6 15.Bb5! Nd7 16.Qh8+–) 15.Ne5 (better 15.Bb5 ab5 16.Ra8+–) 15...c4 (15...Qd6 16.f4 Bg8+–) 16.Nd7 Kd7 17.Bc4 Bc4 18.Rc4 Nbc6 19.Nd5 g5 20.Nb6 Kd6 21.Na8 Ne5 22.Rd4 Kc5 23.Qh3 Kd4 24.Qe3 Kc4 25.Ke2 N7c6 (25...Nc8 26.Qc3 Kb5 27.Rb1 Ka4 28.Ra1 Ba3 29.Ra3 Kb5 30.Ra5) 26.Qb3 Kc5 27.Qd5 Kb4 28.Rb1 Ka4 29.Nb6 Ka3 30.Qb3 1–0. pcmvr – valerypavlovich, net–chess.com, 2018.

3.e4 e5 4.c4 Bb4–/+ 5.Bc3 Bc5 6.d4 ed4 7.Bd4 Ba7 8.Qd3 c5 (better is 8...Bd4!? 9.Qd4 Nc6–/+) 9.Bc3 Nc6 10.Qd6 Nge7 11.Na3 Qb6 12.Be2 Bb8 13.Qd1 d6 14.e5? (14.Bh5 g6 A) 15.Bf6? Qb4 16.Kf1 Rf8 (16...Qa3?! 17.Bh8 gh5 18.Qh5 Ng6 19.Qh7 Qd3 20.Ne2–/+; 16...gh5?! 17.Bh8 Qa3 18.Qh5 Ng6 19.Qh7 Qd3 20.Ne2–/+) 17.Be7 Ke7–+; B) 15.Rb1+=) 14...de5–+ 15.Rb1 Qc7 16.Nf3 Bf5 17.Bd3? (17.Rb2–+) 17...e4 18.Be4 (18.Bc2 ef3 19.Qf3 Bc2 20.Nc2 0-0–+) 18...Be4 19.0-0 (19.Rb3–+) 19...Bf3 20.Qf3 Qh2 0–1. MARYMARY – Eries, ChessWorld.net, 2011.

3.e4 e5 4.d4 Bb4 5.Bc3 Bc3 6.Nc3 d6 7.Bc4 Nc6 8.Bg8 Rg8 9.Nf3 Bg4 10.Qd3 Qd7 11.Nh4 Nd4 12.f3 Be6 13.0-0 Qc6 14.Rfc1 Ne2 15.Ne2 0-0-0 16.f4 Qc5 17.Kh1 Bc4 18.Qf3 Be6 19.f5 Bc4 20.Ng3 d5 21.ed5 Bd5 22.Qf1 Bc4 23.Qf3 Bd5 24.Qe2 Qc6 25.c4 Bf7 26.Qf3 Rd4 27.Qc6 bc6 28.Nf3 Rc4 29.Rd1 g5 30.Nd2 Rf4 31.Nge4 Rf5 32.a3 g4 33.Rf1 Rf1 34.Rf1 Bg6 35.Nc5 Rd8 36.Ndb3 Rd6 37.Na6 h5 38.g3 Bd3 39.Rc1 Ba6 40.Nc5 Be2 41.Ne4 Bf3 0–1. 488 – Jimbo628859, ChessWorld.net, 2012.

3.g3 c6 4.Bg2 e6 5.a3 Ne7 (5...a5 6.ba5 d5 7.e4=) 6.d3 (6.e4 d5=) 6...Ng6 7.Nd2 Be7 8.c4 0-0 9.Bf3 (9.h4 d5=) 9...d6 (9...a5 10.Qa4=+) 10.Bg2 Kh8 (10...a5 11.h4=) 11.Ngf3 Kg8 12.0-0 Kh8 (12...e5 13.d4=) 13.h4 (13.d4 e5+=) 13...Kg8 14.h5 Kh8?? (better 14...Ne5+=) 15.hg6+– Kg8 (15...hg6 16.Kh2+–) 16.gh7 Kh8 (16...Kh7 17.d4+–) 17.Bh3 b6 (17...Kh7 18.e4 c5 19.Kg2+–) 18.Kg2 (better 18.Nd4 f5+–) 18...Bb7 (18...Kh7 19.e4 c5+–) 19.Be6 Bc8 (19...Qe8 20.Nh4 f5 21.Nf5+–) 20.Bc8 Nd7 (20...Qc8 21.Rh1 f5+–) 21.Bd7 (better 21.Bb7 Ra7 22.Bc6 f5+–) 21...Rb8 (21...Qd7 22.Rh1 a5+–) 22.Bc6 Ra8 23.Ba8 (better 23.Nh4 g5 24.Ng6 Kh7 25.Nf8 Qf8+–) 23...Qe8 24.Rh1 (better 24.Bd5 f5+–) 24...Qd8 25.Bc6 (better 25.Nh4 Qe8 26.Qa4+–) 25...Qe8 26.Be8 b5 27.cb5 (27.Nh4 g5 28.Ng6 Kg7 29.Nf8 Kh8 30.Ng6 Kg7 31.h8Q) 27...d5 (27...Re8 28.Qb3 Rb8 29.Qf7 Rc8 30.Nh4 ab5 31.Ng6) 28.ba6 (28.Nh4 g5 29.Ng6 Kg7 30.Nf8 Kh8 31.Ng6 Kg7 32.h8Q) 28...Bd6 29.a7 (29.Nh4 g6 30.Ng6 Kg7 31.Nf8 Kf8 32.h8Q Ke7 33.Qf6 Ke8 34.Qa4) 29...Rf7 30.Bf7 f5 (30...Bf8 31.a8Q d4 32.Qf8) 31.a8Q Bb8 32.Qb8 1–0. JUANKARODA (1770) – dvblack (1730), lichess.org, 2020.

3.g3 d6 4.Bg2= c6 5.Nf3 Nd7 6.d3 e5 7.Nbd2 (7...d5 8.a3=; 7.0-0 d5 8.a3 a5=). coloplayah (2155) – viling (1615), net–chess.com, 2006.

2.Bb2 Nf6

(--> 1.b4 Nf6 2.Bb2 a6).

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

3.a3 e6 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 a6).

3.c4 e5 4.Be5 Bb4 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c4 a6).

3.e3 b5 (--> 1.b4 Nf6 2.Bb2 b5 3.e3 a6).

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

3.e3 e6 4.a3 d5 5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 Nbd7 5.e3 a6).

3.Nf3 g6 4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 a6).

3.Nf3 g6 4.e3 Bg7 5.Be2 0-0 6.0-0 d5 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 d5 5.Be2 0-0 6.0-0 a6).

2.Bb2 h5

3.c4 Rh6 4.d4 g5 (4...d5 5.e3=) 5.e3 f5 (5...e5 6.a3+=) 6.Nf3 e6 7.Be2 (7.a3!?+=) 7...Bb4= 8.Bc3 Be7 9.Ne5 g4 10.h3 d6 11.hg4 (better is 11.Nd3!?+=) 11...de5–/+ 12.gf5 ef5 13.Bh5 Kd7 (better is 13...Kf8!?–/+) 14.de5+= Ke6 15.Qd8 Bd8 16.Bf7?? (better is 16.e4+=) 16...Kf7–+ 17.Rh6 Nh6 18.f4 Be6 19.Nd2 Be7 20.Ke2 Ng4 21.Rb1 b6 22.a4 Nd7 23.Kd3 Rc8 24.a5 Bc5 25.ab6 cb6 26.Bd4 Nf2 27.Ke2 Bd4 28.ed4 Ng4 29.d5 Bd5! 30.cd5 Rc3 31.e6+= Ke7 32.ed7 Kd7 33.Rb6+= Re3 34.Kd1 Ra3 35.Nc4 Ne3 36.Ne3+/– Re3 37.Ra6 Rd3 38.Ke2 Rd5 39.Ke3 Rb5 40.Kd4 Rb2 41.Ke5+– Rg2 42.Kf5 Rf2 43.Ra7 Ke8 44.Ke5 Re2 45.Kf6 Rf2 46.f5 Rg2 47.Ra5 Rg8?? 48.Ra8 Kd7 49.Rg8 Kc6 50.Kg7 Kd5 51.f6 Ke5 52.f7 Ke4 53.f8Q Ke5 54.Qf7 Kd4 55.Re8 Kd3 56.Qd7 Kc4 57.Rc8 Kb4 58.Qb7 Ka3 59.Ra8# 1–0. ludice (1715) – madmusikus, kurnik, 2011.

3.e4 h4 4.Bc4 Rh6 5.Qf3 f6?? 6.Bg8+– (6...e6 7.Nh3+–) 1–0. Wall,Bill – Darry, internet, 2005.

3.h3 d6 4.c4 Nf6 5.a4 c5 6.b5 a5 7.e3 Nbd7 8.Nc3 Ne5 9.Nf3 Qd7 10.Ne5 de5 11.Be2 Ng8? (better is 11...b6!?+=) 12.Bh5 g6 13.Bg4?? (13.Bf3 Nf6+–) 13...Qd6?? (better is 13...Qg4! 14.Qg4 Bg4+=) 14.Bc8 Rc8 15.Qf3 Rb8?? (15...Rd8 16.Rd1 Rd7 17.d3+/–) 16.Qd5 (better is 16.Ne4 Qe6 17.Nc5 Qc4 18.Be5 Qc5 19.Bh8+–) 16...e6 (16...Nf6!? 17.Qd6 ed6+/–) 17.Qd6+– Bd6 18.Ne4 Bc7? (18...Ke7 19.f4! f6 20.fe5 fe5 21.Ra3+–) 19.Nc5 (19.b6 Bd8 20.Be5 Rh4 21.Bb8 Re4+–) 19...Ke7 20.Nd3 f6 21.0-0 Nh6 22.f4 Nf5? 23.fe5 fe5 24.Ne5 Rhg8 25.Rf3 g5 26.c5 g4 27.hg4 Be5 28.Be5 Rg4 29.Bb8 Nh4 30.Bd6 Kd7 31.Rf7 Ke8 32.Rf8 Kd7 33.Rf2 Nf5 34.Rf5! ef5 35.Rf1 Ke6 36.g3 Ra4 37.Rf4 Ra3 38.Kf2 Ra2 39.Ke2 a4 40.Rd4 a3 41.c6 bc6 42.bc6 Rc2 43.Ba3 Rc6 44.Rd6! Rd6 45.Bd6 Kd6 46.Kf3 Ke5 47.d3 Kd5 48.Kf4 Ke6 49.e4 fe4 50.Ke4 Kf6 51.d4 Kg5 52.Ke5 Kg4 53.Ke6 Kg3 54.Ke7 Kf4 55.d5 Ke5 56.d6 Kd5 57.d7 Kc6 58.d8Q Kc5 59.Ke6 Kc4 60.Ke5 Kc3 61.Qd4 Kc2 62.Kd5 Kc1 63.Qd3 Kb2 64.Qc4 Ka3 65.Qc5 Ka4 66.Qb6 Ka3 67.Kc4 Ka2 68.Kc3 Ka3 69.Qb3# 1–0. aleksandras19 – mmm999, kurnik, 2011.

2.Bb2 h6

3.a3 Nf6 4.e3 Nc6 5.d4 d5 6.Nf3 e6 (6...Bf5 7.Ne5=) 7.c4 Bd7 8.Nc3 Be7 9.cd5 Nd5 10.Nd5 ed5 11.Bd3 Bg4 12.Be2 (12.0-0 0-0=) 12...Qd7 13.0-0 g5 (13...0-0 14.Rc1=) 14.Ne5 Ne5 15.de5 Be6 16.Bh5 (16.Bd3 0-0-0+=) 16...0-0-0 17.Bd4 Rhg8 Black prepares g4 18.h3 (better is 18.Be2!?+=) 18...g4+= 19.hg4 Bg4 20.Bg4 Rg4 21.g3 h5–/+ 22.Kg2 h4 23.Rh1 hg3 24.fg3 Rdg8–+ 25.Rh3 Bg5 26.Qf3? Qe6 27.Rc1? c6 28.Rf1 Rf8?? 29.Bc5+= Rg8 30.Qf7+/– Qf7 31.Rf7 Be3?? 32.Be3+– Re4 33.Bf4 Re2 34.Kf3 Ra2 35.Rhh7 Ra3 36.Kg2 Ra2 37.Kh3 Kd8 38.Rb7 Ra4 39.Rb8 1–0. Fournier,Frederic – quirantov(C), Active, 2008.

3.a3 Nf6 4.e3 Nc6 5.Nf3 e6 6.c4 Be7 7.Be2 0-0 8.0-0 Re8 9.d4 d5 10.Qc2 dc4 11.Bc4 Bd6 12.e4 Nd7 13.e5 Bf8 14.Qe4 Nb6 15.Bd3 Threatening mate: Qh7 15...g6 16.Nc3 Bg7 17.h4 h5 18.Rfd1 Ne7 19.g4 Nbd5 20.gh5 f5 21.Qe1 Nf4 22.Bc4 b5 23.Bb3 c6 (23...gh5 24.Bc1 Nfd5 25.Bg5+=) 24.Qe3 Nh5 25.Ng5 Nd5 26.Nd5 cd5 27.Kh1 Bd7 28.Rg1 Qe7 29.Bd1 White terminates the opponent with strong threats 29...Rec8 30.Rg2 Kh8 31.Bh5 gh5 32.Rag1 Rg8 33.Qe2 The mate threat is Qxh5 33...Be8 34.Nf3 Bd7 (34...Bf7!?+=) 35.Bc1+– Raf8 36.Bg5 Qf7 37.Bf4 (37.Bf4 Qe7 38.Qe3+–) 1–0. pcmvr – marekt, net–chess.com, 2020.

3.a4 a5 4.b5= c6 (4...Nf6!?=) 5.e3 c5 (5...Nf6 6.Nf3+=) 6.Nf3 d6 7.Bc4 (7.d4 Nd7+–) 7...e6 (7...Nf6 8.0-0+=) 8.0-0 (8.e4 Nf6 9.Nc3 Be7+=) 8...b6 (8...Nf6 9.Qe2+–) 9.d4 Nd7 10.e4 Bb7 11.d5 e5 12.Nc3 Be7 13.Qe2 Bf6 14.Nd2 (14.Nd1 Ne7+–) 14...Bc8 (14...Ne7 15.g3+–) 15.Bb3 Nf8 16.Nc4 (16.g3 Ng6+–) 16...Ng6 17.g3 Be7 18.f4 (better 18.Nd1 Nf6 19.Nde3+–) 18...Bh3 (18...Nf6 19.f5 Nf8 20.Nd1+–) 19.Rfe1 (19.fe5 Bf1 20.Rf1 (20.Kf1?! Ne5 21.Ne5 de5=) 20...Ne5 21.Ne5 de5 22.d6+–) 19...Bf6?? (better 19...Nf6+–) 20.f5+– Nf8 (20...h5 21.fg6 fg6 22.Nd1+–) 21.Qh5 Bg5 22.Qh3 1–0. DEFFM – GuestTHPM, freechess.org, 2019.

3.a4 b6 4.b5 a5 5.e3 d6 (5...Bb7 6.Nf3+=) 6.Nf3 (6.Bc4 d5 7.Be2 Nf6+=) 6...e6 (6...e5 7.Bc4 Nf6 8.e4+=) 7.Be2 (7.d4 Nf6+=) 7...Rh7 (7...Nf6 8.0-0+=) 8.c4 (8.d4 Bb7+–) 8...Nd7 (8...e5 9.Nc3+–) 9.Qc2 (9.0-0 Bb7+–) 9...g6 10.d4 (10.Qe4 Rb8+–) 10...Ne7 (10...Bb7 11.0-0+=) 11.e4 (11.Nc3 Bb7+–) 11...Bb7 (11...c5 12.bc6 Nc6 13.0-0+–) 12.Nbd2 (12.0-0 Bg7+–) 12...Bg7 (12...c5 13.bc6 Nc6 14.Qb3+–) 13.0-0 Nf8 (13...c6 14.bc6 Nc6 15.Rab1+–) 14.Rad1 Nd7 15.Rfe1 Nf8 (15...c5 16.bc6 Nc6 17.Qb3+–) 16.e5 (16.c5 d5+–) 16...d5 (16...Nd7 17.Bd3 de5 18.Ne5+–) 17.c5+– Nf5 18.c6 (18.Ba3 Rh8+–) 18...Bc8 19.Ba3 (19.Bd3 Qe7+–) 19...Ne7 (19...g5 20.Nb3 g4 21.Nfd2+–) 20.Bf1 (20.Bd3 Nf5+–) 20...Nf5 21.Bd3 Rh8 22.Nf1 Nh7 23.Ne3 (23.Qe2 Ng5 24.N1d2 Nf3 25.Nf3 Nh4+–) 23...Ne3 (23...Ng5 24.Be2+–) 24.Re3+– Bf8 (24...Nf8 25.Re2+–) 25.Bg6 (25.Bg6 Ba3 26.Bh7+– (26.Ra3?! Qe7+=)) 1–0. DEFFM – GuestCFXM, freechess.org, 2016.

3.a4 b6 4.b5 Bb7 5.e3 Nf6 6.Nf3 d6 7.d4 e6 8.Bd3 Be7 9.Nbd2 d5 10.0-0 0-0 11.c4 ab5 12.ab5 Ra1 13.Qa1 Nbd7 14.Rc1 Bd6 15.Qb1 (15.cd5 Nd5 (15...Bd5? 16.e4+–) 16.Ba3 Qe7 17.Bd6 cd6+=) 15...Qe7 (15...dc4 16.Bc4 Qe7 17.e4+=) 16.Qc2 Ra8 17.Ne5 Ra2 18.Ra1 Ra1 19.Ba1 Qd8 20.Nd7 Nd7 (20...Qd7? 21.c5+–) 21.e4 (21.cd5 ed5 22.Nf3 Nf6+=) 21...de4= 22.Ne4 Qa8 23.Bc3 Bf8 24.f3 c6 25.bc6 Bc6 26.Qd1 Bb7 27.Qc2 (27.Qb1 Qd8+=) 27...h5 (27...Bc6 28.Qb1=) 28.Ng5 (28.Qe2 Qa4+=) 28...Be7+= 29.Bh7 Kf8 30.Nf7 Kf7 31.Qg6 Kf8 32.Qe6 Threatening mate: Qg8 (32.Qh5?? Nf6 33.Qg6 Qa3–+ (33...Nh7?! 34.Qh7 Qa4 35.Qh8 Kf7 36.Qh5 Kg8 37.Qb5 Qb5 38.cb5–+)) 32...Ke8 33.Bg6 Kd8 34.Bh5 Qa4 35.Qe2 Qb3 36.Bb2 Ba6 37.Bf7 Qa2 38.Kf2 Qb1 39.Bc3 Qh1 40.Kg3 (better 40.h3!?=) 40...Bd6–/+ 41.f4 Qb1 42.Bd2 (42.Kf3 Nf6 43.d5 Qb3–+) 42...Nf6 43.Kf3 Qb3 44.Kf2 Qc2 45.Kf1 Qc1?? (better 45...Qb1 46.Qe1 Qe1 47.Ke1 Ke7–+) 1–0. DEFFM – GuestZNWM, freechess.org, 2020.

3.a4 b6 4.e3 d6 5.c4 (5.a5 e5+=) 5...Nd7 (5...Nf6 6.a5=) 6.Nf3 (6.d4 c5=) 6...e6 (6...e5 7.d4=) 7.d4 (7.Be2 Ngf6+=) 7...g6 (7...d5 8.Bc3=) 8.d5+= e5 9.Be2 (9.a5 Ne7+–) 9...Bg7 (9...a5 10.ba5 Ra5 11.Bc3+=) 10.Qc2 (10.a5 Ne7+=) 10...Ne7 (10...a5 11.b5+=) 11.e4 (11.0-0 a5+=) 11...Bb7 (11...f5 12.Nbd2+=) 12.0-0 Bc8 (12...0-0 13.Nc3+=) 13.Nbd2 Bb7 (13...0-0 14.Rfb1+=) 14.a5+– Bc8 (14...c5 15.Ba3+–) 15.Ne1 1–0. DEFFM – GuestSVTP, freechess.org, 2016.

3.a4 d6 4.b5 ab5 5.ab5 Ra1 6.Ba1 e5 7.e3 Be7 8.Nf3 Nf6 9.c4 0-0 10.d4 e4 11.Nfd2 c6 12.Nc3 d5 13.cd5 (13.Be2 Bf5=) 13...cd5 14.Qb3 Nbd7 (14...Bg4 15.f3 ef3 16.gf3=+) 15.Be2 (15.Nd5 Nd5 16.Qd5 Qa5–/+) 15...Nb6 16.0-0 Bg4 17.Bg4 Ng4 18.h3 Nf6 19.Bb2 Bd6 20.Ra1 Qd7 21.Na4 (21.Ra2 Ra8=) 21...Na4 22.Ra4 b6 (22...Rc8 23.Ba3=) 23.Ra6 Rb8 24.Nb1 Bc7 25.Nc3 Qd6 26.g3 Nh5?? (26...Qd7 27.Ba3 Rc8=+) 27.Ba3 Qd7 (27...Qe6 28.Qd5 Nf6 29.Qe6 fe6 30.Ra4+–) 28.Nd5 (28.Nd5 Bd8 29.Kg2+–) 1–0. AhmedSultanov – cozy2345, lichess.org, 2019.

3.a4 d6 4.e3 e5 5.b5 (5.Nf3 e4 6.Nd4 d5=) 5...Nf6 6.Nf3 (6.d4 e4=) 6...Be7 (6...e4 7.Nd4=) 7.Be2 0-0 (7...Be6 8.0-0=) 8.0-0 Nbd7 (8...Be6 9.Nc3=) 9.d4 e4 10.Nfd2 d5 11.c4 c6 (11...ab5 12.ab5 Ra1 13.Ba1 dc4 14.Nc3=) 12.Nc3 dc4 (better 12...ab5!? 13.ab5 Ra1 14.Qa1 Qc7+=) 13.bc6+– (worse 13.Nc4 ab5 14.ab5 Ra1 15.Qa1 cb5+=) 13...bc6 14.Nce4 Ne4 15.Ne4 Nb6 (15...c5 16.Bc4 Rb8 17.Qc2+–) 16.a5 Nd5 17.Bc4 f5 (17...Bb4 18.Qa4+–) 18.Nc5+– Bc5 19.dc5 Be6 20.Be5 Qg5 (20...Re8 21.Qf3+–) 21.f4 (21.Qa4 Rfc8+–) 21...Qg4 (21...Qd8 22.Qd3+–) 22.Rf3 (better 22.Qg4 fg4 23.Ra4 Rf7+–) 22...Kh8? (better 22...Ra7+–) 23.Qa4 Bd7 (23...Ra7+–) 24.Rg3 Qh5 (24...Qg3 25.hg3 Ne3+–) 25.Rg7 Nf6 26.Rd7 Qe8 (26...Rae8 27.Bd4 Qg6 28.Qc6 Rc8 29.Qa6 Ra8+–) 27.Qc6 Rc8 28.Bf6 Rf6 29.Qf6 1–0. DEFFM – GuestYQZS, freechess.org, 2018.

3.a4 d6 4.e3 e6 5.Nf3 (5.Nc3 Nf6=) 5...Ne7 (5...d5 6.c4=) 6.b5 (6.Nc3 Nbc6 7.b5 Nb4+=) 6...ab5 7.ab5 (7.Bb5 Nd7+=) 7...Ra1 8.Ba1 Nd7 9.d4 d5 10.c4 dc4 11.Bc4 Nd5 (11...Nb6 12.Bd3+=) 12.0-0 Bd6 13.e4 N7b6 14.ed5 (14.Bb3 Nf4+–) 14...Nc4 15.de6 0-0 16.d5 Nb6 (worse 16...fe6 17.Qd4 Qf6 18.Qc4 Qa1 19.de6+–) 17.Qd4 (17.Re1 Nd5 18.Qd4 Nf6 19.ef7 Rf7=) 17...Qf6= 18.Qb6 Qa1 19.ef7 (19.Qe3 Qf6=) 19...Rf7 20.Qe3 Qa5 21.Nc3 Bd7 22.Qd3 Rf4 23.Nd4 Qa3 (23...Qb4 24.Nce2 Rf8 25.g3=) 24.b6 (24.g3 Rf7=) 24...cb6= 25.h3 (25.g3 Rf8=) 25...Be5=+ 26.Nde2 Rf8 27.Qd2 Qc5 28.Ne4 Qa5 29.Rb1 (29.f4 Qd2 30.Nd2 Bb8=+) 29...Bf5 30.Qd3 Rd8 Attacks the isolani on d5 31.Rd1 Qa4 32.f3 b5 33.Rb1 Qc4 (33...b4 34.f4 Be4 35.Qe4=+) 34.Qc4 bc4 35.Rb5 Bg6 (35...b6 36.Kf2=) 36.Kf2 Be8 37.Rb7 Rd5 38.Rb4 Rb5 39.Rc4 Rb2 40.Ke3 Bb5 41.Rc8 Kh7 (41...Kf7 42.Nd2=) 42.Nd2 Bf6 43.f4 (43.Rc1 g5=) 43...Ba6 44.Rc5 Be7 45.Rc7 (45.Rc1 Bd8 46.Nc4 Rb3 47.Kd2 Be7=) 45...Bd8 46.Rd7 Ba5 47.g4 Ra2 48.f5 Kg8 49.Nf4 (better 49.Nc1!? Rc2 50.Ne2=) 49...Bb5–/+ 50.Rd6 Bc7 51.Ne4 Ra3 52.Kf2 Bd6 (52...Ba6 53.h4–/+) 53.Nd6 Bc6 54.Ng6 Rf3 55.Ke2 Ba8 56.h4 Rg3 57.Ne5 Bh1 58.Kd2 (58.Kf2 Rh3=+) 58...Bd5–/+ 59.Ke2 Rh3 60.h5 (60.Nc8 Kf8–/+) 60...Ra3 61.Kd2 (61.Kf2 Ra6 62.Nb5 Be4–/+) 61...Ra6 62.Nb5 (62.Nc8 Kf8 63.Nb6 Bg2–/+ (worse 63...Rb6 64.Nd7 Ke7 65.Nb6=+)) 62...Ra5 63.Nd4 (63.Nc3 Bb7 64.Nc4 Rc5–+) 63...Bg2 64.Nc4 Ra4 65.Kc3 Kf7 66.Kb3 Ra1 67.Kc3? (better 67.Ne3 Bb7 68.Kc3–+) 67...Rc1–+ 68.Nc2 Kf6 69.Kd2?! (69.Nd2–+) 69...Rg1 70.Ke2 (70.Nd6 Bf3 71.Nd4 Bg4–+) 70...Bf1 71.Kf2 Rg4 (71...Bc4?! 72.Kg1 Be2 73.Ne3–+) 72.N4e3 Rf4 73.Kg3 (73.Ke1 Bc4–+) 73...Kg5 74.Nf1 (74.f6 Rf6 75.Nd5 Rf5–+) 74...Rf1 75.Ne3 (75.Nd4 Rd1 76.Nc6 Kf5–+) 75...Rf4 76.f6 Rf6 77.Nd5 Rf7 0–1. DEFFM – GuestQZNY, freechess.org, 2020.

3.a4 e6 4.b5 a5 5.e3 b6 6.Nf3 d6 7.c4 Ne7 (7...Nf6 8.d4+=) 8.Be2+– Bb7 9.0-0 Nd7 10.d4 Nb8 (10...c5 11.bc6 Nc6 12.Nc3+=) 11.Nc3 g6 (11...Nd7 12.e4+–) 12.d5 (12.c5 bc5 13.dc5 Bg7+–) 12...e5 13.Ne4 (13.e4 Bg7+=) 13...Nd7 14.Nfd2 Bg7 15.f4 Ng8 (15...f5 16.Nf2+=) 16.Nf3 Ngf6 17.fe5?? (better 17.Nf6 Bf6 18.fe5 Ne5 19.Bd3+–) 17...Ne4–/+ 18.Qd3? (better 18.Qc2 Ndc5 19.ed6 Bb2 20.Qb2–/+) 18...Nec5–+ 19.Qc2 de5 20.Bd3 (20.Rad1 f5–+) 20...Qe7 21.Be4 (21.e4 0-0-0–+) 21...Qd6 (21...f5!? 22.Bf5 gf5 23.Qf5–+) 22.h4 (22.Nd2 f5 23.Bf3 0-0-0–+) 22...Rf8 23.Nh2 (23.Bd3 f5 24.e4 Nd3 25.Qd3 Nc5–+) 23...0-0-0 24.g4 (24.Bf3 Qe7–+) 24...Kb8 (24...Qe7 25.Rf2–+) 25.h5 (25.Bg2 Qe7 26.Nf3 f5 27.gf5 gf5–+) 25...gh5 26.gh5 Rg8 (26...Nf6 27.Bf3 e4 28.Bd1–+) 27.Rf2 (27.Bh7–+) 27...Nf6 (27...Ne4 28.Qe4 Nf6 29.Qc2–+) 28.Bf5 (28.Bg2 e4 29.Raf1 Nh5 30.Bg7 Rg7 31.Rf7 Rg6–+) 28...Nh5 (28...e4 29.Rg2 Nh5 30.Bg4–+) 29.Rg2 (29.Bh7 Rh8 30.Ng4 e4 31.Bg7 Ng7 32.Be4 Ne4 33.Qe4 f5–+) 29…Nf6 0–1. AhmedSultanov (1630) – depoy, lichess.org, 2019.

3.a4 e6 4.Nf3 Bb4 (4...Nf6 5.b5=) 5.Bg7 Rh7 6.Bb2 (6.Bc3 Bc3 7.Nc3 d6=) 6...Ba5 (6...Nf6 7.Nc3=) 7.e3 c6 (7...Nf6 8.Be2=) 8.c4 (8.Ne5 h5+–) 8...Qb6 (8...Nf6!?=) 9.Qc2+– Bb4?? (better 9...f5+–) 10.Qh7+– Bd2 (10...Bf8 11.Bh8 d6 12.Qg8 e5+–) 11.Nbd2 Qb2 12.Qg8 Ke7 13.Rb1 Qa2 14.Ne5 (better 14.Qc8 Qa4 15.Qb7 c5 16.Qa8 Nc6+–) 14...b5 15.Qc8 f6 16.Ng6 Kd6 (16...Kf7 17.Qf8 Kg6 18.Qg8 Kf5 19.Bd3 Ke5 20.Qg3) 17.Ne4 1–0. DEFFM – GuestDLQJ, freechess.org, 2018.

3.a4 Nf6=+.

3.a4 g5?? 4.Bh8+– f5 (4...Nf6 5.Nc3+–) 5.e3 (5.e4 Nf6 6.Bf6 ef6 7.Qh5 Ke7+–) 5...Ra7 (5...Nf6 6.Bf6 ef6 7.Qh5 Ke7+–) 6.Qh5 1–0. DEFFM – Paulfivens, freechess.org, 2019.

3.a4 g6?? 4.Bh8+– f6 (4...Nf6 5.Nc3+–) 5.e3 e5 (5...Nc6 6.Nf3 e6 7.Nh4+–) 6.Qg4 (better 6.Bd3 Kf7 7.Nc3+–) 6...Bb4 (6...Kf7 7.Nc3 d5+–) 7.Qb4 Nc6 8.Qg4 (8.Qh4 d5 9.Nc3 Kf8+–) 8...d5 (8...Kf7 9.Qh4 d6 10.Nc3+–) 9.Qg6 (9.Qg6 Ke7 10.Nc3+–) 1–0. DEFFM – GuestCCSP, freechess.org, 2019.

3.c4 d6 4.d4 Nf6 5.d5 e6 6.e3 ed5 7.cd5 Nd5?? (better 7...Be7=) 8.Bc4?? (better 8.Qd5 Nc6 9.Nf3+–) 8...Nf6 (8...Nb4 9.a3 N4c6 10.Nf3–/+) 9.Ne2 (9.a3 d5 10.Bd3 Bd6=+) 9...Be7 (9...d5!? 10.Bd3 Bb4 11.Nbc3–+) 10.0-0 Nc6 11.a3 0-0 12.Nbc3 Bg4 13.h3 Bh5 14.g4 (14.f3 a5=+) 14...Bg6 15.Nf4 Bh7 16.h4 (16.Ncd5 Rc8–/+) 16...Ne5 17.g5? (better 17.Be2–/+) 17...hg5 (17...Nc4 18.gf6 Bf6 19.Qe2 Nb2 20.Qb2 Bh4 21.Qd2–+) 18.hg5 Nfd7 (better 18...Nc4!? 19.Qe2 Nb2 20.gf6 Bf6 21.Qb2–+) 19.Qh5 (19.g6 Ng6 20.Ng6 Bg6–+) 19...Bg5 20.Bd3?? (20.Be2–+) 20...Bd3 21.Rfd1 (21.Nd3 Nd3 22.Ne4 Bf6–+) 21...Bh7 22.Kg2 (22.Nce2 Be4 23.Qh3 Re8–+) 22...Bf4 23.ef4 Qf6 (23...Nc4 24.Ra2–+) 24.Rh1 (24.fe5 Qe5 25.Qe5 Ne5 26.Nd5 Be4 27.Kg3 Bd5 28.Rd5–+) 24...Qg6 25.Qg6 Ng6 (25...fg6?! 26.fe5 Ne5 27.Nd5–+) 26.Kf3 Ne7 27.Ne4 Nf6! 28.Rh2?? (28.Bf6 Be4 Double attack (28...Be4 Decoy; 28...d5 Passed pawn); 28.Nf6 gf6 Combination) 28...Ne4 (better 28...Be4 29.Ke2–+) 29.Rah1 Nf6 (better 29...f6!? 30.Rh7 d5 31.Kg2–+) 30.Bf6 gf6 31.Rh7 Ng6 (31...Rfe8 32.R1h6 Nd5 33.Rh4–+) 32.R7h6?? (better 32.f5 Rac8 33.R1h6–+) 32...Rfe8 33.Rg1 (33.f5 Ne5 34.Kg3 Kf8–+) 33...Kf8 34.f5 Ne5 35.Ke4 (35.Kg3–+) 35...Ke7 (better 35...Ng4! 36.Kf4 Nh6–+) 36.Kd5 1–0. Agiant – rafiswcc (1645), lichess.org, 2019.

3.e3 b5 4.c4 Rh7? 5.cb5+– ab5 6.Bb5 Ba6 7.Ba6 Ra6 (7...Na6 8.Qc2 g6 9.a3+–) 8.Nf3 g5 (8...Rb6 9.a3+–) 9.0-0 Nf6 10.d4 (10.b5!? Rb6 11.Qc2 Rg7+–) 10...d6 11.Nc3 e5? (11...c6+–) 12.b5 Ra7 (12...Ra5 13.de5 de5 14.Qc2+–) 13.de5 Nfd7 (13...de5 14.Qc2 Nbd7 15.Rfd1+–) 14.ed6 cd6 (14...Bd6 15.Qc2 Rg7 16.Rfd1+–) 15.Nd5 1–0. Wall,Bill – Neko Toni, internet, 2004.

3.e3 c6 4.c4 d6 5.Nf3 (5.d4 d5+=) 5...Qb6 (5...e5 6.d4=) 6.a3 a5 7.Qb3 a4 (7...ab4 8.d4=) 8.Qc2+– Na6 (8...Bg4 9.Be2+–) 9.Be2 Nc7 10.d4 Ne6 (10...c5 11.bc5 dc5 12.0-0+–) 11.0-0 Qd8 (11...Nf6 12.Nc3+–) 12.Nc3+– Nc7 (12...Ng5 13.Nd2+–) 13.Na4 b5 (13...Bg4 14.Nb6 Ra6 15.c5+–) 14.cb5 (14.Nb6 Rb8 15.Nc8 Rc8+–) 14...cb5 15.Nb6 Rb8 16.Nc8 Qc8 17.Rfc1 (17.Rfc1 Kd8 18.d5+–) 1–0. DEFFM – GuestKMJP, freechess.org, 2018.

3.e3 Nc6 4.a3=.

3.e3 d5 (--> 1.b4 d5 2.Bb2 a6 3.e3 h6).

3.e4 Nc6 4.a3 d6 5.d3 Nf6 6.Be2 e5 7.Nf3 Be7 8.0-0 0-0 9.Nc3 d5 10.b5 (10.ed5 Nd5 11.Nd5 Qd5=) 10...ab5 11.Nb5 de4 12.Ne5 (12.de4!? Ne4 13.Ne5 Ne5 14.Be5=) 12...Ne5–/+ 13.Be5 c6 14.Nc3 (14.Nd4!?–/+) 14...Qa5 15.Bd4 Rd8 16.Be5?? (better 16.Bf6 Bf6 17.Ne4 Ba1 18.Qa1 Qa3 19.Qb1–+) 16...Qe5 17.Qd2 Bd6 18.g3 Bc5 19.Na2 (19.Qe1 Bh3 20.Rd1 Re8–+) 19...e3 20.Qc1 (20.Qd1 ef2 21.Kh1 Ra3–+) 20...ef2 21.Rf2 Bh3 (better 21...Qe2 22.Qf1 Qc2–+) 22.Bf1 (22.c3 Be3 23.Qe1–+) 22...Bf2 23.Kf2 Ng4 24.Kg1 (24.Kf3 Re8 25.Bh3 Qe2 26.Kf4 g5 27.Kf5 Re5) 24...Qd4 25.Kh1 Qf2 26.Qf4 (26.Qd2 Qd2 27.Be2 Qe2 28.Re1 Qe1) 26…Qh2 0–1. rimazu – marekt, net–chess.com, 2020.

3.e4 d5 4.ed5 Qd5 5.Nc3 Qe6 6.Nce2 (6.Nge2 Nf6=) 6...Qc4 (6...Bd7 7.d4=) 7.a3+= Bg4 8.f3 Bd7 9.Ng3 (9.Be5 Nf6=) 9...Qe6 10.N1e2 (10.Qe2 Qe2 11.Be2 Nc6+=) 10...Ba4 (10...Nf6 11.Kf2=) 11.Ne4 Nc6?? (Better is 11...Nd7+=) 12.Nc5+– (12...Qg6 13.Na4+–) 1–0. Wall,Bill – Tasau, internet, 2003.

3.e4 Nf6 4.e5 Nd5 5.a3=.

3.Nf3 Nf6 4.c4 d5 5.cd5 Qd5 (5...Nd5 6.a3=) 6.Nc3 (6.a3 Nc6=) 6...Qc4 (6...Qd6 7.a3=) 7.a3+= e6 (7...Bg4 8.d4+=) 8.e3 (8.e4 Qc6 9.e5 Nd5+=) 8...Qc6 (8...Qg4 9.d4+=) 9.Ne5 (9.Ne5 Qd6 10.d4+=) 1–0. michaelbuss (2775) – charlie bird, ChessWorld.net, 2011.

3.e3 e6

4.a3 d5 5.Nf3 Nf6 6.Be2 Be7 (6...Nbd7 7.0-0=) 7.0-0 Nbd7 (7...0-0 8.Ne5=) 8.d3 c5 9.bc5 Nc5 10.Nbd2 Bd7 (10...0-0 11.Bd4=) 11.Be5 (11.Bf6 Bf6 12.d4 Na4=) 11...Bc6 (11...0-0 12.d4 Na4 13.c4=) 12.c3 (12.Nd4 Ncd7 13.Nc6 bc6+=) 12...0-0 13.Qc2 (13.Bd4 Rc8=) 13...Ba4 (13...Ncd7 14.Rfb1=) 14.Qb2 Bc6 (14...b5 15.Rfc1=) 15.Nd4 Na4 (15...Ncd7 16.Bg3+=) 16.Nc6 bc6 (worse 16...Nb2 17.Nd8 Rfd8 18.Rfb1+–) 17.Qc2 Nb6 18.c4 (18.Rfb1 Nfd7 19.Bg3 Bh4+=) 18...Nbd7 19.Bg3 e5 (19...Re8 20.Rfc1+=) 20.Nf3 (20.d4 Bd6+=) 20...Bd6 21.Nd4 Qc7 22.Nf5 dc4 (22...Rfe8 23.Rfc1 (23.Nd6?! Qd6 24.Rfc1 d4=) 23...Ra7 24.cd5 Nd5 25.Qc6 Qc6 26.Rc6+–) 23.d4 e4?? (better 23...c5+–) 24.Bd6+– (24.Bd6 Qd8 25.Bf8 Qf8 26.Bc4+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

3.e3 Nf6

4.c4 Nc6 5.a3 e6 6.Nf3 Bd6 (6...d5 7.Nc3+=) 7.Nc3 e5 (7...b6 8.d4 0-0 9.Bd3+=) 8.Bd3 Be7 (8...b6 9.0-0+=) 9.b5+/– ab5 (9...Na5 10.Ne5 0-0 11.ba6 Ra6 12.0-0+/–) 10.cb5 Nb8 11.Ne5 d6 12.Nf3 Bg4 (12...Nbd7!?+/–) 13.h3+– Bh5? (better is 13...Bc8+–) 14.g4 Bg6 15.Bg6 fg6 16.Nh4 g5 17.Ng6 Rg8 18.Qb3 Nbd7 (18...d5 19.e4! Kf7 20.Ne5 Kf8+–) 19.Nd5 Nc5 (19...Nd5 20.Qd5 Rf8 21.Nf8 Kf8 22.Qb7 Nc5 23.Qf3 Kg8 24.Qd5 Kh8+–) 20.Nf6 Bf6 (20...gf6 21.Qg8 Kd7 22.Ne7 Qg8 23.Ng8 Rg8 24.Bf6+–) 21.Qg8 Kd7 22.Qf7 Kc8 23.Bf6 Qf6 (23...gf6 24.d4 Na4+–) 24.Qe8 Qd8 25.Ne7 1–0. Fritz 11 – anony, internet, 2014.

4.c4 e6 5.b5 a5 6.a4 b6 7.d4 d6 8.Nf3 Bb7 9.Be2 Nbd7 10.0-0 Qe7 11.Nbd2 0-0-0 12.Rc1 Kb8 13.Nb3 g5 14.Ba3 Qe8 15.c5 dc5 16.dc5 Nc5 17.Qc2 Nb3 18.Qc7 Ka8 19.Qb6 Nc1 20.Rc1 Ba3 21.Qa5 Kb8 22.Qc7 Ka8 23.Rf1 Qd7 24.Qc3 Qd6 25.Qf6 Qe7 26.Qc3 Rc8 27.Qa5 Kb8 28.b6 Qc5 29.Qa7 1–0. rom49szachy – swidwin3m19, kurnik, 2012.

3.Nf3 e6

4.g3 b5 5.Bg2 Bb7 6.0-0 Bf3 7.ef3 Nc6 8.a3 a5 9.c3 ab4 10.cb4 Bb4? (better is 10...Nf6=) 11.ab4+– Ra1 12.Ba1 Nb4 13.Bg7 Rh7 14.Bc3 Nd5 15.Bb2 b4 16.Qc2 f5 17.Re1 Qe7 18.Be5 d6 19.Bd4 Ngf6 20.f4 h5 21.h4 Ng4 22.Bd5 Kf8 23.Be6 Qd8 24.Bf5 d5 25.Bh7 Qd7 26.Qf5 Qf5+– 27.Bf5 (27.Bf5 Kf7 28.Be6 Kf8 29.Bd5+–) 1–0. linakip – infiltrator2, kurnik, 2012.

4.g3 d5 5.d3 Nf6 6.a3 Nc6 7.Bg2 Na7 8.Nbd2 c6 9.c4 Bd7 10.0-0 Qc7 11.Qb3 0-0-0 12.Rac1 dc4 13.Rc4 Qd6 14.Rcc1 Kb8?? (better is 14...Qe7+–) 15.Be5 1–0. linakip – swidwin3m19, kurnik, 2011.

4.g3 d5 5.Bg2 Nf6 6.a3 c6 7.d3 Bd7 8.Nbd2 Qe7 9.0-0 Bc8 10.Qc1 Nbd7 11.c4 dc4 12.Nc4 Nb6?? (12...c5 13.bc5 Qc5 14.Bd4+/–) 13.Na5 (better is 13.Nb6 Bd7 14.Na8+–) 13...Qc7 14.Qc2 Nfd5 15.Bd4 f6 16.e4 e5? 17.Bb2 Ne7+/– 18.Nd2 Ng6 19.Ndc4 Be7 20.Rac1 Be6 21.Nb6 Qb6 22.Nc4 Qc7 23.Na5 0-0 24.Nb3 Qd8 25.Nc5 Bc8 26.Rfd1 b6 27.Nb3 c5 28.bc5 bc5 29.Nc5 Bc5 30.Qc5 Kh8 31.a4 Bd7 32.a5 Rc8 33.Qa3 Bb5 34.Bf1 Rc1 35.Rc1 Ne7 36.Bc3 Nc6 Attacks the isolani on a5 37.Rd1 Nd4 38.Bd4 ed4 39.Rc1 Rg8 40.Qc5 Qa5 41.Be2 Qd8 42.Kf1 Qd7 43.f3 Qh3 44.Kg1 Qe6 45.Qd4 Qa2 46.Kf2 Qa3 47.Qc3 Qe7 48.d4 Kh7 49.Bb5 (49.Bb5 ab5 50.Kg2+/–) 1–0. linakip – swidwin3m19, kurnik, 2012.

4.g3 Nf6 5.a3 d5 6.d3 Nc6 7.Nbd2 Na7 8.c4 dc4 9.Nc4 Bd7 10.Bg2 Qe7 11.0-0 0-0-0 12.Nfe5 Be8 13.Na5 c6 14.Nac4 Kb8?? (14...h5+/–) 15.Bc3 (15.Ng6 fg6 16.Be5 Qd6+–) 15...h5?? (15...Nb5 16.Bd2+=) 16.a4 h4?? 17.b5 cb5 18.ab5?? Nb5= 19.Ba5 Rc8 20.Nb6 Rd8 21.Qb3 Nd5 22.Nd5+/– Rd5 23.Bd5 ed5 24.Qd5 f6 25.Nf3 h3? 26.Rfe1 Bc6 27.Qf5 g5 28.e4 Qd6? 29.Rad1 Nd4? 30.Nd4+– Qd4 31.Qf3 Bc5 32.Bd2 Rf8 33.Be3 Qd6 34.Bc5 Qc5 35.Qe3 Qd6? 36.d4 Re8 37.Qc3 Be4 38.Re3 g4 39.Rde1 f5 40.Qc5 Qd8?? 41.Rc1+/– Re7 42.Rec3 Rd7 43.Qc8?? Ka7 44.Qd8 Rd8 45.Rd1 Bf3 46.Rd2 Bd5 47.Rc5 Be4 48.d5? b6 49.Rc7 Kb8 50.Rc6 Kb7 (50...Rd5?! 51.Rd5 Bd5 52.Rb6 Ka7 53.Rf6=). linakip – swidwin3m19, kurnik, 2011.

4.g3 Nf6 5.a3 d6 6.Bg2 c5 7.c3 c4 8.d3 cd3 9.Qd3 Be7 10.0-0 0-0 11.Qc2 Nc6 12.Nbd2 Rb8 13.Nb3 b5 14.c4 bc4 15.Qc4 Bd7 16.Qa6 d5 17.Qd3 Bd6 18.Nbd4 Nd4 19.Bd4 Qc7 20.Rfc1 Qb7 21.Qc3 Rbc8 22.Qb2 Rc1 23.Rc1 Qb8 24.Rc2 Ba4 25.Rc3 e5 26.Bc5 Bc5 27.Rc5 e4 28.Nd4 Qe5 29.e3 Ng4 30.Qc1 f5 31.Ne2 Nf6 32.Qd2 Rd8 33.Nd4 Kh8 34.Bh3 Ng4 35.Qe2 Kh7 36.Bg4 fg4 37.Qg4 Kh8 38.Qf5 Qf5 39.Nf5 Bd7 40.Nd4 Bg4 41.Kg2 h5 42.h3 Bc8 43.b5 Kh7 44.a4 Kh6 45.h4 g6 46.a5 Rd6 47.a6 Rb6 48.f3 ef3 49.Kf3 Bd7 50.Kf4 Rf6 51.Ke5 Rf5 52.Kd6 Rf7 53.Rd5 (53.Rd5 Bc8 54.e4+–) 1–0. linakip – swidwin3m19, kurnik, 2011.

4.g3 Nf6 5.Bg2 Bb4 6.0-0 Be7 7.d3 d5 8.Nbd2 Nc6 9.c4 dc4 10.Nc4 Bd7 11.Qb3 Qc8 12.a4 0-0 13.Ba3 Ba3 14.Qa3 Nd5 15.Rab1 b5 16.Nce5 (16.ab5 ab5 Passed pawn) 16...Ne5 17.Ne5 Be8 18.Rfc1 b4 19.Qb2 a5 20.e4 Nc3 21.Ra1 Rb8 22.Nc4 Qa6?? (22...Na4 23.Qd2–+) 23.Bf1?? (better is 23.Rc3 f6 24.Rc2+–) 23...Ba4–+ 24.d4 Bb5?? 25.Qb3? Bc4 26.Bc4 Qa7 27.Re1? Qd4 28.Ra5 c5 29.Raa1 Ne4 30.Rf1 Nd2 31.Rad1 Nb3 32.Rd4 Nd4 33.Kg2 Rfd8 Black plans b3 34.f4 b3 35.Rb1 b2 36.Kf2 Nc6 37.Ke3 Na5 38.Bd3 c4 39.Bc2 c3 40.Re1 Rd2 41.Be4 Rh2 42.Kd4 Rc8 43.g4 f5! 44.gf5 ef5 45.Bf5 Rc7 46.Re8 Kf7 47.Ra8 c2 48.Ra5 c1Q 49.Rd5 Qd2 50.Ke4 Re7 51.Re5 Re2 52.Kf3 (52.Kf3 Rf2 53.Kg4 Qf4 54.Kh3 Rh2#). linakip – swidwin3m19, kurnik, 2011.

2.Bb2 Nh6

3.e3 Nc6 4.a3 Nf5 5.e4 Nfd4 6.c3 Ne6 7.d4 d5 8.c4 Nf4 9.cd5 Nd5 10.ed5 Qd5 11.Nc3 Qd4 12.Nd5 Qd1 13.Rd1 Kd8 14.Nb6 1–0. Bonetti,Shane – esmith, ICC, 2002.

3.e3 d5 4.Nf3 Nc6 5.a3 e5 6.Ne5 Ne5 7.Be5 Bd6 8.Bg7 Rg8 9.Bh6 Qf6 10.Nc3 Qh6 11.Nd5 Be6 12.Qh5 Qh5 13.Nf6 Ke7 14.Nh5 Rg5 15.Ng3 Rag8 16.Ne4 Be5 17.d4 Bf6 18.Ng5 Bg5 19.Bd3 b5 20.Bh7 Rg7 21.Be4 f5 22.Bb7 Kd6 23.Ba6 c6 24.a4 Bc4 25.ab5 cb5 26.Bc8 f4 27.e4 Bh6 28.Ra6 Kc7 29.Bf5 Bg5 30.Ra7 1–0. Machete99 – guest246, ICC, 2002.

3.e4 e6 4.Nf3+= Nc6 5.a3 Ng4 6.d4 Qe7 7.c4 f6 8.Nc3 Qf7 9.h3 Nh6 10.d5 Ne5 11.Nd2 Be7 12.Be2 0-0 13.0-0 c6 14.f4+/– Ng6 15.g4 Nh4 16.Qe1+– g5? 17.fg5 (17.fg5 Qg6 18.gh6 Qh6 19.c5+–) 1–0. Wall,Bill – Nicaraguan, internet, 2005.

3.g3 Nf5 4.Bg2 Nd6 5.Nf3 Nc4 6.Bc3 b5 7.d3 Nb6 8.Nd4 c6 9.0-0 Na4 10.Bd2 Bb7 11.a3 e6 12.Nc3 Nb6 13.Ne4 h6 14.c3 d5 15.Nc5 Bc5 16.bc5 Na4 17.e3 (17.Nb3!?=) 17...Nd7 18.Nb3 Nf6 19.d4 Qd7 20.Na5 Nb2 21.Qc2 Nc4 22.Nc4 dc4 23.e4 0-0 24.e5 Nd5 25.Qe4 Kh8 26.Qg4 Ne7 27.Qh3 Kg8 28.Be4 Nf5 29.Bc2 Qe7 30.Bf5 ef5 31.Qf5 Qe6 32.Qf3 Rad8 33.Rab1 Rde8 34.a4 Qd5?? 35.Qg4?? Qe6 36.Qf3 Qd5 37.Qd5 cd5 38.ab5 Re7 39.ba6 Ba6 40.Rb6 Re6 41.Rfb1 Ra8 42.Rb8 Rb8 43.Rb8 Kh7 44.h4 Kg6 45.Rb6 Rb6 46.cb6 Bb7 47.f4 f6? 48.ef6 Kf6 49.Kf2 Kf5 50.Kf3 g6? 51.g4 Kf6 52.f5 Kg7 53.fg6 Kg6 54.Kf4 h5 55.g5 Bc6 56.Ke5 Bb7 57.Bc1 Bc6 58.Ba3 Bb7 59.Be7 Kf7 60.Bd8 Ke8 61.Bc7 Kf7 62.Bd6 Bc6 63.Bb8 Bb7 64.Kf4 Kg6 65.Be5 Bc6 66.Bf6 Bb7 67.Ke5 Kf7 68.Kd6 Kg6 69.Kc7 Ba6 70.b7 Bb7 71.Kb7 Kf5 72.Kc6 Kg4 73.Kd5 Kh4 74.g6 (74.g6 Kg3 75.g7 Kf3 76.g8Q h4 77.Bh4 Ke2 78.Qg2 Kd1 79.Bg5 Ke1 80.Be3 Kd1 81.Qd2#) 1–0. rryy44 – kundel10c, kurnik, 2012.

2.c3 b5

3.a4 Bb7 4.ab5 ab5 5.Ra8 Ba8 6.e3 c6 7.Nf3 d6 8.g3 Nd7 9.Bg2 Ngf6 10.h3 g6 11.Bb2 Bg7 12.c4 0-0 13.Qc2 bc4+= 14.Qc4 c5 15.bc5 Nc5 16.0-0 Bd5 17.Qc2 Qa8 18.d4 Ne6 19.Nh4 Bg2+= 20.Ng2 Qf3 21.Nd2 Qh5 22.h4 Qd5 23.Qd3 Nh5 24.Rc1 Rb8 25.Bc3 Qb5 26.Qe4 Nc7?? 27.Qe7+/– Nd5 28.Qe4 Nc3 29.Rc3 Qb4? 30.Rc2?? Nf6+/– 31.Qd3 d5 32.Kh2 Qd6 33.Nf3 Ne4 34.Nf4 f5 35.Rc1?? Bf8 36.Rf1 Qb4? 37.Ne5 Bd6 38.Qa6 Be5? 39.Qe6+– Kf8 40.Qe5 Qe7 41.Qh8 Kf7 42.Qb8 Qa3 43.Qc7 Kf6 44.Qe5 Kf7 45.Qd5 Kg7 46.Ne6 Kh6 47.Ng5! (47.Ng5 Qa6 48.Qf7+–) 1–0. martin78ns – golfx, kurnik, 2012.

3.a4 Bb7 4.ab5 ab5 5.Ra8 Ba8 6.e3 d6 (better is 6...e5!?=) 7.Bb5+/– Nd7 8.Qa4?? (better is 8.Nf3+/–) 8...Bg2–+ 9.Bc6 d5?? (better is 9...Bh1 10.Bh1 Ngf6–+) 10.Bd5?? (better is 10.Bd7 Qd7 11.Qa8 Qd8 12.Qc6 Qd7 13.Qa8 Qd8 14.Qc6 Qd7 15.Qa8=) 10...Bd5–+ 11.f3 Ngf6 (11...e5 12.d3–+) 12.e4 (12.d3 e5–+) 12...Ba8 (12...Ne4 13.c4 Bb7 14.Qa7–+) 13.Ne2?! (13.d3 e5–+) 13...g6 14.Nf4? Bg7 15.Qb5? 0-0 16.d3 Qb8 17.Qc4? Ne5 18.Qd4 Nf3 19.Ke2 Nd4 20.cd4 c5 21.bc5 Ne4 22.Nd2 Nd2 23.Bd2 Bh6 24.h4 Bf4 25.Bf4 Qf4 26.Rf1 Qd4 27.Kd2 Qc5 28.Rf4 e5 29.Rc4 Qc4! 30.dc4 f5 31.Kc3 e4 32.c5 Rd8 33.Kc4 e3 34.Kb5 e2 35.c6 Bc6! 36.Kc6 e1R 37.Kc7 Rde8 38.Kd7–+ f4 39.h5 g5 40.h6 g4 (40...g4 41.Kd6 Rd1 42.Kc6 Rc8 43.Kb7 Rc2 44.Ka7 Rb2 45.Ka6 Ra1#; 40...R8e2 41.Kd6 Rd1 42.Kc5 Rc2 43.Kb4 Rb1 44.Ka3 g4 45.Ka4 Ra2#) 0–1. martin78ns – golfx, kurnik, 2012.

3.a4 c6 4.a5 d5 5.d4 e6 6.e3 f5 7.Bd3 Nf6 8.Nf3 Be7 9.Ne5 0-0 10.f4 1–0. martenkaa91 – elpollo, kurnik, 2012.

3.a4 c6 4.ab5 cb5 5.e3 Nc6 6.Bb5 e6 7.Bc6 dc6 8.Ne2 Nf6 9.0-0 Bb7 10.Bb2 Be7 11.Na3 0-0 12.Nc4 Qd3 13.Ne5 Qf5 14.Nf3 Rfd8 15.Ned4+= Qd5 16.Nb3 Ne4 17.d4 h6 18.Nc5 Bc5 19.bc5 g5 20.Nd2 f5? 21.Ne4 Qe4 22.Qh5 Kg7 23.Rfc1 Rd7 24.c4+– Kh7 25.Qe2 Kg6 26.f3 Qh4 27.Bc3 g4 28.Be1 Qg5 29.fg4 fg4 30.Qd3 Qf5 31.e4 Qf7 32.d5 e5 33.Qg3 Qf4 34.Qf4 ef4 35.d6 h5? 36.Bc3 h4 37.e5 Kf7? 38.Bd2 f3 39.Re1 Ke6 40.gf3 Rg8 41.f4 h3? 42.Kf2 Rdg7 43.Kg3 Ra8 44.Reb1 Kf5 45.Bc3 Ke4 46.e6 Kd3 47.Bg7 Kc4 48.Rb7 Kc5 49.d7 Kd6 50.f5 c5 51.Rd1 Kc6 52.Rdb1 c4 53.Rb8! Rb8 54.Rb8 a5 55.d8Q a4 56.Bd4 a3 57.Qd7 1–0. tomy (2260) – valerypavlovich (2120), net–chess.com, 2006.

3.Bb2 Bb7 4.d3 d6 5.e3 Nd7 6.f3 c5 7.g3 (7.a4 e5=) 7...cb4 8.cb4 Ngf6 9.Bg2 g6 (9...e5 10.Qd2+=) 10.Ne2 Bg7 11.0-0 0-0 12.Nd2? (12.a4 ba4 13.Qa4 Qb6=) 12...Ne5 (better is 12...Nd5 13.Bg7 Ne3–+) 13.d4 Nc4 14.Nc4 bc4 15.a3 d5 16.Rb1 e6 17.Nc3 Bc6 18.Kh1 Qd7 19.e4 a5 20.ed5 (better is 20.Bc1!?=) 20...Nd5–/+ 21.Nd5 Bd5 22.ba5 Ra5 23.Qd2 Rb8?? (better is 23...Rfa8–/+) 24.Qa5+– Ra8 25.Qb6 Qb7 26.Qb7 Bb7 27.Ra1 Bd5 28.a4 Bf8 29.Bc3 White intends a5 29...Bd6 30.a5 Bc7 31.a6 Bb6 32.Rfb1 Ba7 33.f4 Bg2 34.Kg2 Kg7 35.Rb4 Kf6 36.Rc4 Kf5 37.Rc7 Ke4 38.Rf7 Kd3 39.Bb2 Kc2 40.Rb7 h6 41.Rc1 Kd3 42.Rcc7 Bd4 43.Bd4 Kd4 44.a7 e5 45.Rb8 Ra7 46.Ra7 ef4 47.Re8 fg3 48.Rd7 Kc5 49.Rc8 Kb6 50.Rd1 Kb7 51.Rc2 Kb6 52.Rb1 Ka5 53.Ra2# 1–0. fkrantic – golfx, kurnik, 2012.

3.Bb2 Bb7 4.e3 d6 5.a4 c6 6.ab5 cb5 7.Nf3 Nd7 8.Be2 e6 9.d4 Ngf6 10.h3 Be7 11.0-0 0-0 12.Qd3 Be4 13.Qd2 Bb7 14.Qd3 g6 15.Nh2 Ne8 16.Bf3 Bf3 17.Nf3 d5 18.Nbd2 Ng7 19.e4 de4 20.Ne4 Nf6 21.Nf6 Bf6 22.Nh2 Ne8 23.Bc1 Bg7 24.Ng4 Qc7 25.Nh6 Kh8 26.Qf3 Nf6 27.Bg5 Nd5 28.Rae1 Qc3 29.Qe4 Qc7 30.Ng4 h5 31.Ne3 Ne3 32.Re3 Kg8 33.Bf4 Qd7 34.Bg3 Qd4 35.Qc6 Qb4 36.Bd6 Rfc8 37.Qc8 Rc8 38.Bb4 Bd4 39.Rd3 Bf6 40.Rd6 Rc4 41.Ba5 1–0. martin78ns – hyman, kurnik, 2012.

3.d4 a5 4.e4 Bb7 5.f3=.

3.d4 e6 4.Qd3 (4.a4 ba4 5.Nf3 Bb7+=) 4...Bb7 5.f3 (5.Nf3 f5=) 5...Nf6 (5...a5 6.Qb5 Bc6 7.Qg5 Qg5 8.Bg5 ab4 9.e4=) 6.h4 (6.e4!?=) 6...d5 7.Bf4 Bd6 8.g3 Bf4 9.gf4 Nc6 10.Bh3 Nh5–/+ 11.Bg4? Nf4–+ 12.Qe3?? Ng2 13.Kf2 Ne3 14.Ke3 0-0 15.f4 f5 16.Bh5 Rf6 17.Nf3 17...Rh6 18.Bf7 Kf7 19.Ng5 Kg8 20.Nd2 Bc8 21.Rag1 Rg6 22.h5 Rf6 23.h6 g6 24.Nh3 a5 25.Nf3 ab4 26.Nh4 bc3 27.Rg2 Ra2 28.Ng5 c2 29.Nh7 Kh7 30.Ng6 Rg6 31.Rhg1 Rg2 32.Rg2 Kh6 33.Rh2–+ Kg6 34.Rh1 Nb4 35.Rg1 Kf6 0–1. Aldeeek – guest1142_jjirous, ICC, 1999.

3.e3 Bb7

4.a4 d6 5.ab5 ab5 6.Ra8 Ba8 7.Bb5 Nd7 8.Nf3 Ngf6 9.0-0 g6 10.Qa4 (10.d3 Bg7+/–) 10...Bg7 11.Nd4 0-0 12.Nc6 Bc6 13.Bc6 Nb6 14.Qb5 Qb8 15.Qd3 e6 16.Bb2 d5 17.b5 Nc4 18.Bc1 (18.Qc2 Na5+=) 18...Qb6 (18...Ne5 19.Qc2+=) 19.Na3 (better is 19.Ba3 Rb8 20.Qd4=) 19...Qc5?? (better is 19...Ne5 20.Qe2 Nc6 21.bc6 Qc6=) 20.Nc4+/– Qc4 21.Qc2 Ne4 22.f3 Nd6 23.d4 Nb5 24.Bb5 Qb5 25.Bd2 c5 26.Rb1 Qc4 27.dc5 Qc5 28.h3 Rc8 29.Rb3 h6 30.Qd3 Kh7 31.f4 e5 32.fe5 Be5 33.Qe2 Bf6 34.Kh1 Bg5 35.Qf3 Kg7 36.Rb7 Rf8 37.Rb4 Bf6 38.e4+= de4 39.Qe4 Bc3?? 40.Bc3?? Qc3–/+ 41.Kh2 f6 42.Rc4 Qe5 43.Kg1 Qe4 44.Re4 g5 45.Re7 Kg6 46.Kf2 h5 47.g3 f5 Black prepares g4 48.Kf3 Rf6 49.Re8 Rd6 50.Re3 g4 51.hg4 hg4 52.Kg2 Rd2 53.Kg1 Kg5 54.Ra3 Rd5 55.Kg2 f4 56.gf4 Kf4 57.Rg3?? Kg5 58.Ra3 Rd2 59.Kf1 1–0. martin78ns – golfx, kurnik, 2012.

4.a4 d6 5.ab5 ab5 6.Bb5 Nd7 7.Ra8 Qa8 8.Nf3 c6 9.Be2 Ngf6 10.0-0 g6 11.h3 Bg7 12.Na3 0-0 13.Nc4 c5 14.bc5 Nc5 15.Nb6 (15.d4!? Nce4 16.Bd2+=) 15...Qa7 16.Nc4 Ba6 (better is 16...Qa8=) 17.Ba3?? (17.Nb2 Be2 18.Qe2 Rb8=) 17...Rc8?? (better is 17...Bc4 18.Bc4 Qa3–+) 18.Bb4 Ne6 19.d3 Bc4 20.dc4 Nd7 21.Qd3 Ne5 The isolani on c4 becomes a target 22.Ne5 Be5 23.Bf3 Ng5 24.Bg4 f5 25.Be2 Ne4+= Attacks the isolani on c3 26.Qd5 Kg7 27.Rc1 Qa2 28.Qe6?? Rc7 29.Bf3?? Qf2–+ 30.Kh1 Ng3 31.Kh2 Ne2 32.Kh1 Nc1 33.Bd5 Qf1# (33...Qe1#) 0–1. martin78ns – golfx, kurnik, 2012.

4.Nf3 d6 5.Be2 Nd7 6.a4 Ngf6 7.ab5 ab5 8.Ra8 Qa8 9.Bb5 Bf3 10.gf3 g6 11.Bb2 Bg7 12.c4 0-0 13.Bd7 Nd7 14.Bg7 Kg7 15.0-0 (15.d3 Ne5=) 15...Ne5 16.f4? (16.e4 Nc4 17.Qb3 d5=) 16...Nc4?? (better is 16...Nf3 17.Kh1 Nd2 18.Kg1 Nf1 19.Qf1 Qf3–+) 17.Qe2 Qd5 (17...Nb6 18.Rc1=) 18.Nc3 (better is 18.Rc1 Nb6 19.Rc7+=) 18...Qb7?? (better is 18...Qe6=) 19.Qc4+– Rb8 20.Qd4 f6 21.Nd5 e5 22.fe5 de5 23.Qc5 Rd8 24.Qe7 Kh6 25.Qd8 c6 26.Nf6 Qb4 27.Ng4 Kh5?? 28.Nf6 Kh6 29.Qe8 Kg5 30.Qe5 Kh6 31.d4 g5 32.Kh1 Qf8 33.Rg1 Qg7 34.Ng4 Kh5 35.Qg7 Kh4 36.Qg5! Kh3 37.Ne5 h6 38.Qg3# (38.Qh6#) 1–0. martin78ns – golfx, kurnik, 2012.

4.Nf3 d6 5.g3 Nd7 6.Bg2 Ngf6 7.Qe2 g6 (7...e5 8.d3+=) 8.d4 Bg7 9.Nh4 (better is 9.a4=) 9...0-0?? (better is 9...Bg2 10.Ng2 c5+=) 10.Bb7+– Ra7 11.Bg2 c5 12.bc5 dc5 13.dc5 (13.0-0!? Qb6+–) 13...Nc5 14.0-0 Qd3 15.Qd3 Nd3 16.Ba3 Re8 17.Nf3 e6 18.Nd4 Ne5 19.Bc5 Rc7 20.Bd6 Rcc8 21.Be5 Nd5 22.Bg7 Kg7 23.Bd5 ed5 24.Nd2 f5 25.N2f3 Rc3 26.Rac1 Rec8 27.Rc3 Rc3 28.Ne5 Ra3 29.Ra1 b4 30.Nc2 Ra4 31.Nc6 a5 32.Kf1 Ra3 33.Na3 ba3 34.Rb1 a4 35.Rb4 d4 36.Nd4 f4 37.gf4 g5 38.fg5 h6 39.gh6 Kh6 40.Ra4 Kg5 41.Ra3 Kg4 42.Rd3 Kh3 43.a4 Kh2 44.a5 Kh3+– 45.a6 Kg4 46.a7 Kg5 47.a8Q Kf6 48.Nb5 Ke5 49.Qa4 Ke6 50.Rd4 Ke5 51.Rh4 Kd5 52.Nc3 Ke5 53.Qa5 Kf6 54.Rb4 Ke6 55.Rb6 Kd7 56.Qa7 Kc8 57.Rb8# 1–0. martin78ns – golfx, kurnik, 2012.

4.Nf3 d6 5.g3 Nd7 6.Bg2 g6 7.Nh4 (better is 7.0-0=) 7...Bg7?? (better is 7...Bg2 8.Ng2 Bg7+=) 8.Bb7+– Ra7 9.Bg2 Ngf6 10.Nf3 0-0 11.Bb2 c5 12.bc5 Nc5 13.Ba3 Nd3 14.Kf1 (better is 14.Ke2 Ng4 15.Qc2+–) 14...a5?? (better is 14...Ne4+/–) 15.Qe2+– b4 16.cb4 (better is 16.Qd3!? ba3 17.Na3 Rb7+–) 16...Nb4 (16...Nf2 17.Rg1 (17.Qf2?! Ng4 18.Qe2 Ba1+/–) 17...N2g4 18.Nd4 ab4 19.Nc6+–) 17.Nc3 Nc2 18.Bb2 (better is 18.Nb5 Na1 19.Na7+–) 18...Na1+/– 19.Ba1 Qc7 20.a4 Qc5 21.Nb5 Rb7 22.Nfd4 Qb4?? 23.Bb7+– Qa4 24.Kg2 Rb8 25.Bf3 Rb5 26.Nb5 Qb4 27.Nc3 a4 28.Rb1 Qa5 29.Qb5 Qb5 30.Rb5 Nd7 31.Ra5 Nc5 32.d4 Nb3 33.Ra4 Na1 34.Ra1 h5 35.Nd5 e6 36.Ne7 Kh7 37.Ra7 Bf6 38.Nc6 Kg7 39.e4 e5 40.de5 de5 41.h3 Kf8 42.g4 h4 43.g5! Bg5 44.Ne5 Kg7 45.Nf7 Bf6 46.Nd6 Kh6 47.Bg4 Kg5 48.Kf3 Be5 49.Nf7 Kf6 50.Ne5 Ke5 51.Re7 Kf6 52.Re6 Kg5 53.Ke3+– Kh6 54.f4 Kg7+– 55.f5 gf5 56.ef5 Kf7 57.Rh6 Kg7+– 58.Rh4 Kf6 59.Kf4 Kg7 60.Rh5 Kf6 61.h4 Kg7 62.Kg5 Kf7 63.Rh6 White prepares the advance f6 63...Kg7 64.Ra6 Kh7 65.f6 Kg8 66.Kf5 Kf7 67.Bh5 Kg8 68.Ra7 Kf8 69.Ke6 White intends f7 69...Kg8 70.f7 Kg7 71.f8Q! Kf8 72.Bg6 (72.Bg6 Kg8 73.Kf6 Kh8 74.Ra8#; 72.Kf6 Kg8 73.Bg6 Kh8 74.Ra8#) 1–0. martin78ns – golfx, kurnik, 2012.

2.c4 b5

3.c5 Nc6 4.Nf3 Nb4 5.d4 Bb7 6.a3 Nd5 7.e4= Ndf6 8.e5 Ne4 9.Bd3+= Nf2?? 10.Kf2+– e6 11.Nc3 h6 12.Bf4 Ne7 13.Rf1 Nd5 14.Nd5 Bd5 15.Kg1 Be7 16.Qe1 g5 17.Bd2 f6?? 18.Bg6+– Kf8 19.Ng5! hg5 20.Bg5 Rg8?? 21.Bh6 Rg7 22.Qh4 f5 23.Bg7 (23...Kg7 24.Qh7 Kf8 25.Qf7#) 1–0. alaamattar (2120) – kecker (2090), net–chess.com, 2007.

3.e3 bc4 4.Bc4 d5 5.Be2 Bb7 (5...e5!?=) 6.Nf3+= Nd7 7.0-0 (7.Bb2 Ngf6=) 7...e6 (7...e5 8.Bb2 Bd6 9.Qa4=) 8.Bb2 (8.d4 Bd6+= (8...Bb4? 9.Qb3+–)) 8...Ngf6 (8...Bb4?? 9.Bg7 c5 10.Bh8+–) 9.Qb3 (9.Qa4 Be7=) 9...Be7 (9...c5 10.bc5 Nc5 11.Qc2=) 10.d4 0-0 (10...a5 11.Ba3+=) 11.Nbd2 (11.Rc1 Rb8+=) 11...Rb8 (11...a5 12.a3=) 12.a4 White plans b5 (12.Rfc1 Ba8 13.a3 a5+=) 12...Bc6 (12...Bd6 13.Rfc1=) 13.b5 (better 13.Ba3!? Bb7 14.Rfc1+=) 13...ab5=+ 14.a5 Ra8 (14...b4!?=+) 15.Rfc1+= (15.Bb5? Bb5 16.Qb5 Rb8–+) 15...Bb7 (15...Nb8 16.Bb5 Bb5 17.Qb5+=) 16.Bb5 (worse 16.Qb5 Ba6 17.Qa6 Ra6 18.Ba6 Qa8=+) 16...Ba6 (16...c6 17.Bf1 Ba6 18.Ba3 Bf1 19.Nf1=) 17.Ba6 (17.Bc6 Ra7+–) 17...Ra6+= 18.Qb7 Attacks the backward pawn on c7 18...Ra8 19.Bc3 White intends a6 (19.Qc7 Qc7 20.Rc7 Bd8+=) 19...Qb8 (19...c5 20.dc5 Nc5 21.Qb5+=) 20.Rcb1 Bd6 (20...Ra7 21.Qb8 Rb8 22.Rb8 Nb8 23.Kf1+=) 21.h3 (21.Qb8 Rfb8 22.Ne5 Rb1 23.Rb1 Kf8+=) 21...h6 (21...Qd8 22.a6+=) 22.Qc6 Qc8 23.a6 Nb8?? (better 23...Ra7 24.Rb7 Rb7 25.Qb7 Qb7 26.ab7 Rb8+–) 24.Qa8+– Nfd7 (24...Nbd7 25.Qc8 Rc8 26.Bb4+–) 25.a7 Nb6 26.ab8Q Qb8 (26...Na8?? 27.Ra8 Qd7 28.Ne5+–) 27.Qc6 Qd8 (27...Qc8 28.Ra7+–) 28.Ba5 (28.Bb4 Bb4 29.Rb4 Qe7+–) 28...Kh7 (28...Nd7 29.e4 de4 30.Ne4+–) 29.Bb6 cb6 30.Rb6 Bc7 (30...Be7 31.Ne5 Bf6 32.Nd7+–) 31.Rb7 Bd6 32.Rd7 Qb8 33.Qd6 Qb2 34.Rb1 (34.Qf8 Qb4 35.Qf7 Qf8 36.Qf8 Kg6 37.Qg7 Kf5 38.g4) 34...Qc3 35.Qf8 (35.Qf8 Qd3 36.Rb8 Qb3 37.Qg8 Kg6 38.Qf7 Kh7 39.Qg7) 1–0. DEFFM – theplayerjtox, freechess.org, 2018.

3.e3 e5 4.Bb2 Nc6 5.a3 d6? 6.cb5+/– ab5 7.Bb5 Bb7 8.Qc2 Nge7 9.Nf3 g6? 10.0-0 Bg7 11.d4 0-0 12.Nbd2 ed4 13.ed4 Qd7 14.Rfe1+– d5? 15.Rac1 Qg4?! 16.Bc6 Nc6 17.Qd3 Rae8? 18.h3 Qf4 19.Nb3 Re6 20.Nc5 Re1 21.Re1 Bc8 22.Bc1 Qd6 23.h4 Bf5 24.Qc3 Be4 25.Ne4+– de4 26.Re4 Ne7? 27.Bf4 Qd7 28.Qc7 Rd8 29.Re7 Qd5 30.Be5 Bf8 31.Ng5 Be7 32.Qe7 h6 33.Qf6 Kf8 34.Qh8 Ke7 35.Bf6 Kd7 36.Qd8 Kc6 37.Qa8 Kd6 38.Be5 (38…Qe5 39.Nf7 Ke7 40.Qb7 Ke6 41.Ne5 Kf5 42.g4 Ke6 43.Qd7 Kf6 44.Qf7) 1–0. wlittle (2135) – kingtipper (1960), net–chess.com, 2004.

3.e4 Bb7 4.Nc3 e6 5.a3 Qe7 6.cb5+/– ab5 7.Nb5 Na6 8.d3 Nf6 9.Nf3 c5? 10.e5+– Nd5?? 11.Nd6 Kd8 12.Nb7 (12...Kc7 13.Nd6+–) 1–0. Wall,Bill – Chopin,Fred, internet, 2000.

3.e4 bc4 4.Bc4 e6 5.a3 Bb7 6.f3 d5 7.ed5?? ed5?? 8.Bb3= Be7 9.Ne2 c5 10.bc5 Bc5 11.d4 Bd6 12.Nbc3 Nf6 13.0-0 0-0 14.Bg5 Nbd7 15.Bd5 Bd5 (15...Nd5 16.Bd8). Hartur – super knight, internet, 2006.

3.cb5 ab5

4.Bb2 Bb7 5.e3 c6 6.Nf3 d6 7.d4 Nd7 8.Bd3 Ra7 9.Nbd2 Qa8 10.a3 Nb6 11.Qc2 Na4 12.Nb3 Nb2 13.Qb2 Nf6 14.Na5 g6 15.0-0 Bg7 16.Rfc1 c5 17.Ne1 c4 18.Be2 0-0 19.Bf3 d5 20.g3 e6 21.Bg2 Nd7 22.Nf3 Nb6 23.Rab1 Na4 24.Qa1 Ba6 25.h4 Qb8 26.Nc6 Qb7 27.Na7 Qa7 28.Nd2 Qe7 29.e4 Qd7 30.ed5 ed5 31.Nf3 Re8 32.Ne5 Be5 33.de5 Qf5 34.Bd5 Re5 35.Bc6 Re2 36.Rf1 Qc2 37.Rbe1 Nc3 38.Rc1 Qa2 39.Qc3 Qd2 40.Qd2 Rd2 41.Rfd1 Ra2 0–1. barborski (1635) – golfx, kurnik, 2012.

4.e3 Bb7 5.Nf3 c6 6.a4 ba4 7.Ra4 Ra4 8.Qa4 e6 9.Bb2 Ne7 10.Be2 Nd5 11.b5 cb5 12.Bb5 Bc6 13.0-0 Bb5 14.Qb5 Nc6 15.Nc3 Nc3 16.Bc3 f6 17.Nd4 Nd4 18.Bd4 Be7 19.Bb6 Qc8 20.Qh5 g6 21.Qh6 Bf8 22.Qf4 Bg7 23.Ra1 0-0 24.Bc5 Qc5 25.d4 0–1. thecat74 – karnobat, kurnik, 2012.

4.e3 Bb7 5.Nf3 c6 6.Bb2 e6 7.Bd3 (7.a3 Nf6 8.Bd3 Be7 9.0-0 d6 10.Nc3= –0.03) 7...Nf6 (7...Bb4?? 8.Bg7 f5 9.Bh8+–) 8.Qb3 (8.a3 Be7 9.0-0 d6 10.Nc3= –0.03) 8...Na6 (8...Bd6 9.a4 ba4 10.Ra4= –0.06) 9.a3 d5 (9...Be7 10.0-0= –0.03) 10.0-0 Ne4 11.Nc3 f5 12.Rac1 h5 13.Rfd1 Ng5 14.Ne5 Bd6 15.Nb5 cb5 16.Bb5 Ke7 17.Ng6 Kf7 18.Nh8 Qh8 19.Bc6 Bc6 20.Rc6 Qb8 21.Qc3 e5? (21...Bf8 22.Rc1+–) 22.Qb3 (better is 22.f4 Ne4 23.Qd3+–) 22...Ke6 23.Be5! Ke5 24.f4 Ke6 25.fg5 Nc7 26.Qc3 Ne8 27.Rc1 Qb7 28.e4 fe4 29.Qh3 Ke7 30.Qh5 Qa7 31.Kh1 Qa3 32.Rf1 Qa1 33.Qf7 Kd8 34.g3 Ra7?? 35.Rc8! Kc8 36.Qe8 Kb7? 37.Ra1 Ra1 38.Kg2 Bb4 39.Qb5 Kc7 40.Qb4 Kc6 41.Qc3 (41.Qc3 Kb5 42.Qa1+–) 1–0. Koper,Konrad (1660) – Piasecki,Andrzej, Poznan Poland, 2010.

4.e3 c6 5.Bb2 d5 6.Nf3 Nd7 7.a3 Nb6 8.Be2 Na4 9.Bd4 Nf6 10.0-0 g6 11.Nc3 Bg7 12.Na4 Ra4 13.Qb3 0-0 14.Rfc1 Qd7 15.Bd1 Bb7 16.Qb2 Ra6 17.h3 Rfa8 18.Ne5 Qd6 19.Bc5 Qe6 20.f4 Ne4 21.Qc2 Nc5 22.Qc5 Ra3 23.Ra3 Ra3 24.Nc6 Bc6 25.Qc6 Ra2 26.Qe8 Bf8 27.Bg4 Qf6 28.Rc8 Qg7 29.Qe7 Rd2 30.Bd7 h6 31.Bb5 Rd1 32.Kh2 g5 33.fg5 hg5 34.Be2 Rb1 35.Bf3 Rf1 36.Bd5 Rf5 37.e4 Re5 38.Rf8 Qf8 39.Qe5 Qb4 40.Qg5 Kf8 41.Qd8 Kg7 42.Qe8 Qd6 43.g3 Qf6 44.Qf7 Qf7 45.Bf7 Kf7 46.g4 Kf6 47.Kg3 Ke5 48.h4 Ke4 49.h5 Ke5 50.Kh4 Kf6 51.g5 Kg7 52.Kg4 Kf7 53.Kf5 Kg7 54.h6 Kh7 55.Kf6 Kg8 56.g6 Kh8 57.g7 Kh7 58.Kf7 Kh6 59.g8R Kh5 60.Kf6 Kh4 61.Kf5 1–0. barborski (1620) – golfx, kurnik, 2012.

4.e3 c6 5.Nf3 Bb7 6.d4 d6 7.Bb2 Nd7 8.Nbd2 Qb6 9.Qb3 Ngf6 10.Be2 g6 11.0-0 Bg7 12.a3 0-0 13.Rfc1 Rfc8 14.Ng5 e6 15.Ne6 fe6 16.Qe6 Kh8 17.Qd6 Rf8 18.Bf3 Rf7 19.Bc6 Bc6 20.Qc6 Qc6 21.Rc6 Raf8 22.Rac1 Nd5 23.f3 Ne3 24.Ne4 Nc4 25.R1c4 bc4 26.Rc4 Nb6 27.Rc6 Na4 28.Ba1 Ra8 29.b5 Rb7 30.Nd6 Rb6 31.Kf2 Rd8 32.Nf7 Kg8 33.Nd8 Rc6 34.bc6 Nb6 35.Ne6 Bf6 36.g4 Kf7 37.Nc5 Ke7 38.Ne4 Bg7 39.Ke3 Nc4 40.Kd3 Na3 41.Nc3 Kd6 42.Bb2 Nb5 43.Nb5 Kc6 44.Nc3 h5 45.Kc4 hg4 46.fg4 Bf6 47.h3 Be7 48.Nd5 Bh4 49.Ba3 Bg3 50.Be7 Kd7 51.Bg5 Kd6 0–1. barborski – golfx, kurnik, 2012.

2.c4 b6

3.Bb2 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.c4 a6).

3.Bb2 Bb7 4.e3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.c4 a6).

3.Bb2 Nc6 4.a3 Na7 5.Nc3 Nh6 (5...Bb7 6.e4+=) 6.e3 Nf5 (6...Bb7!?+=) 7.Qf3+– d5 8.cd5 Qd5?? (better 8...Nd6+–) 9.Nd5+– Nd6 10.Nc7 Kd8 11.Na8 (better 11.Qa8 Kc7 12.Qa7 Kd8+–) 11...Nc4 12.Qd5 (12.Bc4 Bd7 13.Qb7 e5 14.Qc7 Ke8 15.Nb6 Bc5 16.Qd7 Kf8 17.Qf7) 12...Ke8 13.Nc7 1–0. GuestJCSP – GuestVNHP, freechess.org, 2017.

3.Bb2 Nc6 4.a3 e5 5.e3 d5 6.cd5 Qd5 7.Nc3 Qe6 8.Nf3 Bd6 9.Be2 b5 (9...Nf6 10.Qc2=) 10.0-0 Bd7 (10...Qg6 11.a4 ba4 12.Qa4+=) 11.Ne4 (11.d4 ed4 12.ed4 Qh6+–) 11...Be7 (11...Nf6 12.Nfg5 Qf5 13.Nf6 (13.Nd6?! cd6 14.f4 Qg6=) 13...gf6 14.f4 ef4 15.Nh3+–) 12.Qc2 Nf6 (12...f5 13.Nc5 Bc5 14.Qc5+–) 13.Nc5 (better 13.Nfg5 Qf5 14.f4 Ne4 15.Ne4+–) 13...Qf5? (better 13...Bc5 14.Qc5 Ne4+–) 14.Nd7?? (better 14.Bd3 e4 15.Ne4+–) 14...Qc2–+ (14...Qc2 15.Nde5 Qb2 16.Nc6 Ne4 17.Ne7 Ke7–+) 0–1. GuestBTYG – GuestJBCD, freechess.org, 2017.

2.c4 c6

3.a4 a5 4.b5 cb5 (4...d5 5.e3=) 5.ab5 b6 (5...d5 6.cd5 Nf6 7.Nf3=) 6.d4 e6 7.e4 Bb7 (7...d5 8.ed5 ed5 9.Nf3=) 8.d5 (8.Bd3 Nf6 9.Qe2 Qc7+=) 8...ed5 (8...Bc5 9.Nf3=) 9.ed5+= Bc5 10.Qe2 (10.Nf3 Nf6+=) 10...Ne7= 11.Ba3 d6 (11...0-0 12.Bc5 bc5 13.Qc2=) 12.Bb2 (12.Bc5!? bc5 13.Qc2+=) 12...0-0=+ 13.Qg4 Ng6 14.Bd3 Re8 (14...Re8 15.Ne2 Bb4 16.Bc3 Ne5=). afsharian – Jonilyn1960, lichess.org, 2017.

3.Bb2 d5 4.e3 Bf5 5.Nf3 Nd7 6.cd5 cd5 7.Be2 e6 8.a3 Ngf6 9.0-0 Bd6 10.d4 0-0 11.Ne5 Nb6 12.Qb3 Rc8 13.Nd2 Ne4 14.Ne4 Be4 15.Rfc1 Be5 16.de5 Qg5 17.g3 Qh6 18.Bf1 Qh5 19.Bg2 Bf3 20.Bf3 Qf3 21.Rc2 Nc4 22.Bd4 Qe4 23.Rac1 b5 24.a4 h5 25.ab5 ab5 26.Qa2 Ra8 27.Qb1 h4 28.Rc3 Qf3 29.Qd3 h3 30.Qf1 Qh5 31.f3 Ra2 32.R3c2 Rfa8 33.g4 Qh7 34.Ra2 Ra2 35.Ra1 Ra4 36.Ra4 ba4 37.b5 Kf8 38.b6 Ke7 39.b7 Qh8 40.Ba7 Ne3 41.Be3 Qb8 42.Qb5 Qe5 43.Bc5 Kf6 44.b8Q Qe1 45.Qf1 Qf1 46.Kf1 e5 47.Qd8 Kg6 48.Qd5 f6 49.Kf2 Kh6 50.Kg3 g6 51.Bf8 Kh7 52.Qf7 Kh8 53.Qg7 Black king mated 1–0. retiponziani (1870) – Taino my Bishop (1855), ChessWorld.net, 2011.

3.Bb2 d6 4.e3 e5 5.Nf3 Bg4 6.h3 Bf3 7.Qf3 Nf6 8.Nc3 Be7 9.d4 ed4 10.ed4 0-0 11.Bd3 Re8 12.0-0 Nbd7 13.Rfe1 b5 (13...Qb6 14.Rab1+=) 14.c5 (14.Qc6!? bc4 15.Qc4+–) 14...d5 15.Re2 (15.a4 Nf8+–) 15...Bf8 (15...a5 16.a3+=) 16.Rae1 (16.Re8 Qe8 17.a4 g6+–) 16...Re2+= 17.Re2 Qc7 (17...a5 18.a3+=) 18.Bc1 Re8 (18...a5 19.a3+=) 19.Bf4 Qd8 20.Qg3 Re2 21.Be2 a5 (21...Qe7 22.Be3+=) 22.a3 (better 22.Bc7!? Qe7 23.Ba5+– (worse 23.ba5 b4–+)) 22...ab4 23.ab4 Be7 24.Bh6 Bf8 25.Nd1?? (better 25.Bd3+=) 25...Ne4–/+ 26.Qg4 Ndf6 27.Bg5 Be7 (better 27...h6 28.Bf6 Qf6–/+ (28...Nf6?! 29.Qf5=)) 28.Bf6= Bf6 29.Ne3? (better 29.Bd3!?=) 29...Bd4–/+ 30.Bd3 Nf6?? (better 30...Be3 31.fe3 Nf6–/+) 31.Qd4+– 1–0. GuestFHRH – Tumarey, freechess.org, 2017.

3.d4 g6 4.c5 Bg7 5.Bb2 d5 6.Nc3 Nd7 7.e3 Ngf6 8.Bd3 0-0 9.Nf3 Qc7 10.0-0 e5 11.de5 Ne5 12.Ne5 Qe5 13.Na4 Qe6 14.Nb6 Rb8 15.a4 Qg4 16.Be2 Qg5 17.f4 Qh4 18.g3 Qh3 19.Rf2 Bf5 20.Bf1 Qh6 21.Be5 Rbe8 22.Raa2 Ne4 23.Rg2 Bh3 24.Bg7 Qg7 25.Nd7 Bg2 26.Bg2 Nc3 27.Qc2 Na2 28.Qa2 Qc3 29.Nf8 Kf8 30.Kf2 Qe3 31.Kf1 Qe1 0–1. fracton (1705) – mark19116 (1780), lichess.org, 2016.

2.c4 Nc6

3.a3 e5 4.Bb2 d6 5.e3 Bf5 6.Nf3 Nf6 7.d4 e4 8.Nfd2 d5 9.Nc3 Be7 (9...Ne7 10.Be2=) 10.Qb3 (10.cd5 Nd5 11.Nce4 0-0+/–) 10...Be6 (10...dc4 11.Bc4 0-0 12.d5=) 11.cd5+/– Nd5 12.Nd5 (12.Nce4?! Ndb4 13.Bc4 Bc4 14.Qc4 Nd5=) 12...Bd5 13.Bc4 Bc4 14.Qc4 (14.Nc4?! Qd5=) 14...0-0 (14...Qd6 15.Ne4 Qg6 16.d5+–) 15.Ne4 Qd7 (15...Bd6 16.d5 Ne5 17.Qd4+/–) 16.Qc3 (16.d5 Nd8+–) 16...Qg4 (16...Qd5 17.f3+/–) 17.Ng3 (17.d5 Na7 18.0-0 Nb5+–) 17...Bf6 18.h3 Qg5 (18...Qe6 19.0-0+/–) 19.Ne4 Qg6 (19...Qg2 20.Nf6 gf6 21.0-0-0 Qf2 22.d5+/–) 20.Nf6+– Qf6 21.0-0 Rac8 22.e4 Qg6 23.f4 f6 24.e5 fe5 25.fe5 Ne7 26.Rf8+– Rf8 27.Qc7 Nd5 28.Qb7 Ne3 29.Re1?? Qg3= 30.Bc3 Nc2 31.Qd5+/– Kh8 32.Qc5 Qf2 33.Kh1 Ne1–/+ 34.Be1 Qe1 35.Kh2 Qf2 36.e6 Qf4 37.Kh1 Qf1 ½–½. Fournier,Frederic – Duregne,Olivier, Match Active, 1999.

3.a3 e5 4.e4 Nf6 5.d3 Be7 6.Nf3 0-0 7.Bb2 b6 8.Be2 Bb7 9.Ne5+/– Ne5 10.Be5 Ne8 11.0-0 d6 12.Bb2 Qd7 13.Bf3 c5 14.Nd2 Nc7 15.d4 cd4 16.Bd4+– b5 17.Rc1 Ne6 18.Bb2 Bg5 19.Rc2 Rfc8 20.cb5 Rc2 21.Qc2 Rc8 22.Qd3 ab5 23.Rc1 Rc1 24.Bc1 Qc6 25.Bb2 Nf4 26.Qc3 Qc3 27.Bc3 f5 28.Kf1 fe4 29.Ne4+/– Be4 30.Be4+– d5 31.Bf3 Nd3 32.Bd5 Kf8 33.Bc6 Bc1 34.Bb5 Nf4 35.a4 Nd5 36.Be1 Ba3 37.Bd3 g6 38.b5 Ke7 39.g4 Kd6 40.Ke2 Kc5?? 41.Bd2 Bb2 42.h4 Nf6 43.f3 Be5 44.a5 Bb8 45.Bg5 Nd7 46.f4 Kb4 47.a6 Ba7 48.h5 Nc5 49.Be7 Ka5 50.Bc5 Bc5 51.hg6 hg6 52.Bg6 Kb5 53.Bd3 Kb6 54.Kf3 Kc7 55.Ke4 Kd6 56.Kf5 Ke7 57.Kg6 Bd4 58.f5 Kf8 59.Kh7 Kf7 60.g5 Kf8 61.g6 (61...Ke7 62.f6 Kf6 63.g7+–) 1–0. Istvanny (1625) – inaldo, internet, 2007.

3.a3 e6 4.Bb2 Nf6 5.f3 (5.Nf3 d5=) 5...b5 (5...d5 6.e3+=) 6.e3 e5 (6...bc4 7.Bc4 d5 8.Be2=) 7.Bd3 (7.cb5 ab5 8.Bb5 Bd6+/–) 7...d5 (better is 7...bc4 8.Bc4 d5+=) 8.cb5+/– ab5 9.Bb5 Bd7 10.h3 (better is 10.Bc6!? Bc6 11.Be5+/–) 10...Bd6+= 11.Qc1 Ne7 12.Bd3 e4 (12...0-0 13.Ne2=) 13.Bf6 gf6? (better is 13...ed3!? 14.Bh4 f6=) 14.fe4+/– de4 (14...Rg8!? 15.Nc3+–) 15.Be4+– Rb8 (15...Bg3 16.Kf1 Bb5 17.Ne2+–) 16.Qc3 (16.Ne2 Bb5+–) 16...Be5 17.d4 Bg3 18.Kd1 Ba4 19.Ke2 f5 20.Bf3 f4 21.d5 Rg8 22.Qf6 Bb5= 23.Kd1 fe3 24.Nc3+= Bc4 The pressure on the isolated pawn grows 25.Bh5?? Attacking the backward pawn on f7 25...Ng6?? 26.Nf3 Qf6–+ 27.Rc1 e2! 28.Ne2 Qb2 29.Ng3 Bb3 30.Rc2 Qc2 31.Ke1 Nf4 32.Ne5 Ng2 33.Kf1–+ Ne3 34.Kg1 Qg2# (34...Rg3#) 0–1. karlsdad – navajobob, ChessWorld.net, 2011.

3.b5 Na7 4.a4 ab5 5.ab5 (worse is 5.cb5 Nb5 6.e4 Nd6–/+) 5...b6 6.Bb2 Bb7 7.Nc3 Nf6 8.f3 d6 9.e4 e5 10.Nge2 Qd7 11.d4 g6 12.Qc2 ed4 13.Nd4 Bg7 14.Bd3 0-0 15.0-0 c5 16.Nde2 Nh5 17.f4 Qg4 18.h3 Qh4 19.Kh2 Nc8 20.g4 Nf6 21.Rg1 White plans g5 (21.Kg2 Re8=) 21...h5 (better is 21...Ra1 22.Ba1 Qf2 23.Rg2 Ng4 24.hg4 Qh4 25.Kg1 Qe1 26.Kh2 Qa1–/+) 22.g5?? (22.gh5 Ra1 23.Ba1 Nh5=) 22...Qf2?? (better is 22...Ra1 23.gf6 Rg1 24.Kg1 Bf6–+) 23.Rg2+= Qh4?? (better is 23...Ng4! 24.hg4 Qh4 25.Kg1 Ra1 26.Ba1 Qe1 27.Kh2 Qh4 (worse is 27...Qa1 28.Rg1 Qa3 29.gh5+/–) 28.Kg1 Qe1 29.Kh2 Qh4 (worse is 29...Qa1 30.Rg1 Qa3 31.gh5+/–) 30.Kg1=) 24.gf6+– Qf6 25.Nd5?? White intends e5 25...Qb2= 26.Qb2 Bb2 27.Ra8 Ba8 28.Nf6?? Bf6–+ 29.e5 Bg2 30.Kg2 de5 31.fe5 Be5 32.Ng3 Bg3 33.Kg3 Rd8 34.Be2 Nd6 35.Kf4 Re8 36.Bf3 Nc4 37.Bc6 Rc8 38.Kg5 Kg7 39.h4 Nd6 40.Kf4 Nf5 41.Kg5 Rd8 42.Kf4 Rd4 43.Ke5 Rh4 44.Kd5 Rd4 45.Ke5 h4 46.Be8 Rd8 47.Bc6–+ h3 48.Bb7 f6 49.Kf4–+ Rd4 50.Kf3 c4 51.Kf2 c3 52.Be4 Re4 53.Kg1 Re3 54.Kh2 c2 55.Kg1 c1Q 56.Kh2 Qd2 57.Kg1 Re1# 0–1. captainevans – tonyy, kurnik, 2012.

3.b5 ab5=

4.cb5 Na7 5.b6 cb6 6.Nc3 g6 7.Rb1 Bg7 8.Na4 b5 9.Bb2 Bb2 10.Nb2 f5 11.Qb3= d5 12.e3 Nf6 13.Bb5 Nb5 14.Qb5 Kf7 15.Ra1 Ne4 16.Nf3 Qd6 17.0-0 b6 18.Rfc1 Nc5 19.d4+/– Nd7 20.Nd3 Ba6 21.Qd7+– Qd7 22.Nde5 Ke8 23.Nd7 Kd7 24.Ne5 Ke8 25.Rc7 Rf8 26.Rb1 b5 27.Nd7 Rf7 28.Nb6 Rb8 29.Nd5 Kd8 30.Rc6 Ra8 31.Rc5 e6 32.Nc3 Rc7 33.Rc7 Kc7 34.f4 Kc6 35.h4 Rb8 36.a3 h5 37.Kf2 Bc8 38.a4 b4 39.Nb5 Kb6 40.Rb4 Ka5 41.Rc4 Bd7 42.Rc7 Bb5 43.ab5 Rb5 44.Ra7 Kb4 45.Ra6 Rb7 46.Re6 Rg7 47.e4 fe4 48.Ke3 Kc3 49.Ke4 Kc4 50.d5 Kc5 51.Rc6 Kb5 52.g3 Rf7 53.Kd4 Rg7 54.Rc3 Rd7 55.Rb3 Ka4 56.Rb6 Rg7 57.d6 Ka5 58.Kc5 Rf7 59.Kc6 (59...Rf8 60.d7+–) 1–0. Wall,Bill – Pennell,Gary, Taylorsville, NC, 1975.

4.cb5 Na7 5.b6 cb6 6.Nc3 g6 7.Rb1 Bg7 8.Na4 b5=+ 9.Bb2 Bb2 10.Nb2=+ f5 11.Qb3 d5 12.e3= Nf6 13.Bb5 Nb5 14.Qb5 Kf7 15.Ra1 Ne4 16.Nf3 Qd6 17.0-0 b6 18.Rfc1 Nc5 19.d4+/– Nd7 20.Nd3 Ba6 21.Qd7 Qd7 22.Nde5 Ke8 23.Nd7 Kd7 24.Ne5 Ke8 25.Rc7 Rf8+/– 26.Rc6 Rf6+= 27.Rf6 ef6= 28.Nc6 Bc4 29.Nb4 Kd7 30.f4 h5 31.h4 ½–½. Dotlacil,Ladislav – Walker,M, Stary Smokovec, 1975.

4.cb5 Na7 5.e3 d5 6.a4 Bd7 7.Bb2 e6 8.f4 Bb4 9.Nf3 h6 10.Bd3 Ne7 11.0-0 0-0 12.Ne5 Bd6 13.Nd7 Qd7 14.Qg4 Ng6 15.Bg6 fg6 16.Qg6 Rf6 17.Bf6 Kh8 18.Bd4 Rg8 19.Qh6 1–0. jura1946 – erdemsb, kurnik, 2012.

4.cb5 Nb4 5.a3 Nf6 6.Bb2 Nbd5 7.e4 (better is 7.Qc2!?=) 7...Ne4–/+ 8.Qf3 Ndf6 9.Bc4 (9.Nc3 d5–/+) 9...d5–+ 10.Bd3 g6 11.Nc3 Bh6 12.Ne4?? (better is 12.Be4 Bd2! 13.Kf1 Bc3 14.Qc3 de4 15.Ke1–+) 12…de4 (12...de4 13.Qg3 Qd3 14.Qd3 ed3–+) 0–1. Koh,Lucas – Wall,Bill, chess.com, 2011.

4.cb5 Nb4 5.a4 d6 6.Ba3 Nd5 7.e4 Nf4 8.g3 Ne6 9.Bc4 Nf6 10.d3 Nd4 11.Bb2 e5 12.Bd4 ed4 13.Nf3 Bg4 14.h3 Bh5 15.g4 Bg6 16.Nbd2 h6 17.Nd4 d5 18.ed5 Nd5 19.Qb3 Nf4 20.0-0-0 Qd4 21.Rde1 Be7 22.Nf3 Qf2 23.Rhf1 Qc5 24.Ne5 Ne6 25.Ng6 fg6 26.Re6 Rf8 27.Rfe1 Rf7 28.Rg6 Kf8 29.Kb1 Bf6 30.Bf7 Qf2 31.Rc1 Qd4 32.Qa2 Qd3 33.Qc2 Qd4 34.Qc5 Kf7 35.Qd4 Bd4 36.Rd1 Kg6 37.Rd4 Rc8 38.Rd7 Kf6 39.Kb2 g6 40.Kc3 Kg5 0–1. jura1946 – wpwpwp50, kurnik, 2012.

4.cb5 Nd4 5.e3 Nf5 6.e4 Nd4 7.Bb2 (7.Nf3 e5 8.Nc3= (worse 8.Ne5 Qe7 9.Nc4 Nf6=+)) 7...e5=+ 8.Bd4 ed4 9.Qa4?? (better 9.Nf3 Bc5 10.Bc4=+) 9...Ra4–+ 10.a3 Bc5 (10...Nf6 11.Be2 Ne4 12.Nf3–+) 11.d3 Bb4! 12.Ke2 (12.ab4 Ra1 Pinning (12...Ra1 Deflection)) 12...d6 (12...d5 13.e5–+) 13.h3 Ba5 (better 13...Qg5!? 14.Nf3 Qc1 15.Nbd2 Qa1 16.ab4 Rb4 17.g3–+) 14.Nf3 Bc3 (14...Bd7 15.b6–+) 15.Ra2 Qf6 16.Kd1 Be6 17.e5 Qh6 18.Rc2 Ne7 (18...Bb3!? 19.b6 cb6 20.Nfd2 Bc2 21.Kc2 Bd2 22.Nd2 Ra3 23.Ne4–+) 19.ed6 cd6 20.Rc3 dc3 21.Nc3 Ra3 22.Kc2 Ra2! 23.Na2 Ba2 24.g4 Bd5 (24...Qf4 25.Bg2 Bd5 26.Rg1 Bf3 27.Re1 Bg2 28.Ra1 0-0 29.h4 Rc8 30.Kd1 Bf3 31.Ke1 Rc1 32.Rc1 Qc1) 25.Bg2 Qf4 26.Re1 Bf3 27.Bf3 Qf3 28.Ra1 Qf2 29.Kc3 Qc5 (29...Nd5 30.Kb3 Qd4 31.Ka2 Qb4 32.Re1 Kd7 33.Re7 Ke7 34.d4 Ra8) 30.Kd2–+ Qb5 (30...Qb4 31.Kd1 Qb3 32.Ke1 Qc3 33.Kf2 Qa1 34.d4 Qd4 35.Kf3 Kd7 36.Ke2 Rc8 37.b6 Qb2 38.Kf3 Rc3 39.Kf4 Rh3 40.Kg5 Qe5) 31.Ra8 Kd7 32.Ra7 Qg5 33.Kc2 (33.Kd1 Rc8 34.Rb7 Ke6 35.Rb8 Rc1 36.Ke2 Rc2 37.Kf3 Qf6 38.Ke3 Nd5 39.Ke4 Re2) 33...Rc8 34.Kb3 (34.Kb1 Qb5 35.Ka2 Rc2 36.Ka3 Qd3 37.Kb4 Nc6 38.Ka4 Ra2) 34...Qe3 (34...Qb5 35.Ka2 Rc2 36.Ka3 Qd3 37.Kb4 Nc6 38.Ka4 Ra2) 35.Rb7 Rc7 36.Rc7 Kc7 37.g5 (37.Kc2 Qe2 38.Kc3 Nd5 39.Kb3 Qd3 40.Kb2 Qc3 41.Kb1 Nb4 42.h4 Qc2 43.Ka1 Qa2) 37...Qd3 38.Kb4 (38.Kb2 Nf5 39.Ka2 Qc2 40.Ka3 Nd4 41.Kb4 Kb6 42.g6 Qb3) 38...Nc6 39.Ka4 Qc3 40.h4 (40.Kb5 d5 41.g6 Qc4) 40…Qb4 0–1. venaverme – edrspecialty, gameknot.com, 2019.

2.c4 d6

3.a4 Nd7 4.b5 a5 5.Bb2 b6 6.e3 Bb7 7.f4 c6 8.Nf3 cb5 9.cb5 Nc5 10.Nc3 e6 11.Be2 Be7 12.0-0 Nf6 13.h3 h6 14.g4 Nfe4 15.Qc2 Bh4 16.d4 Nc3 17.Bc3 Ne4 18.Bd3 d5 19.Ne5 0-0 20.Be4 de4 21.Bb2 Bd5 22.Qd2 Bf6 23.Nc6 Qd7 24.Rac1 Rfc8 25.Ne5 Be5 26.fe5 Rc1 27.Rc1 Rc8 28.Ba3 Rc4 29.Rc4 Bc4 30.Bd6 Bd5 31.Qc3 g6 32.Qc7 Qc7 33.Bc7 Bb3 34.Bb6 Ba4 35.Ba5 Bb5 36.Kf2 Bc6 37.Kg3 Kg7 38.Kf4 g5 39.Kg3 Kg6 40.Bd8 h5 41.h4 gh4 42.Kh4 hg4 43.Kg4 Bd5 44.Bf6 Bc6 45.Kf4 Bd5 46.Kg4 Bc6 47.Kf4 Bd5 48.Kg4 ½–½. jura1946 – nautilus2009, kurnik, 2012.

3.a4 e5 4.Bb2 Nf6 5.b5 Be7 6.Nf3 0-0 7.e3 ab5 8.ab5 Ra1 9.Ba1 Nbd7 10.Nc3 c6 11.Be2 Nc5 12.0-0 Bf5 13.d4 ed4 14.Nd4 Bd7 15.Bf3 Qc8 16.Qc2 Re8 17.Nde2 Bf8 18.Ng3 Bg4 19.bc6 bc6 20.Bg4 Qg4 21.h3 Qe6 22.Nce2 Ra8 23.Nf4 Qe7 24.Nf5 Qd8 25.Qc3 Nce4 26.Qd4 c5 27.Qd3 Qd7 28.Ng3 Ng3 29.fg3 Ne8 30.Nh5 g6 31.Qc3 Ra1 32.Qa1 gh5 33.Qd1 Qe6 34.Qh5 Qe3 35.Kh2 Qe6 36.Qg5 Bg7 37.Qf4 h6 38.h4 Nf6 39.Qf3 Ng4 40.Kg1 Bd4 41.Kh1 Ne5 42.Qf5 Qf5 43.Rf5 Nc4 44.g4 Kg7 45.g3 Ne5 46.Rf4 Be3 47.Re4 Bd4 48.Kg2 d5 49.Rf4 f6 50.Kh3 Be3 51.Rf1 c4 52.Ra1 d4 53.Ra7 Nf7 54.Kg2 c3 55.Rc7 Bd2 56.Kf2 Kf8 57.Ke2 Ne5 0–1. avinoam (1645) – 1fcpetrzka (1835), kurnik, 2012.

3.Bb2 Nd7 4.e3 b6 5.Nf3 Bb7 6.d4 Ngf6 7.Be2 g6 8.Nbd2 Bg7 9.0-0 0-0 10.Qc2 c5 11.dc5 dc5 12.b5 ab5 13.cb5 Qe8 14.a4 e5 15.Rfd1 e4 16.Ng5 h6 17.Nh3 Ne5 18.Nc4 Nc4 19.Bc4 Rd8 20.Nf4 Rd1 21.Rd1 Qe7 22.Ng6 Qc7 23.Nf8 Kf8 24.g3 h5 25.h4 Qe7 26.Qd2 Ng4 27.Qd8 Qd8 28.Rd8 Ke7 29.Rd2 Bb2 30.Rb2 f5 31.Rd2 Bc8 32.Bd5 Ne5 33.Bc6 Nf3 34.Kf1 Nd2 35.Ke2 Nc4 36.f3 ef3 37.Kf3 Nb2 38.e4 Na4 39.ef5 Bf5 40.Kf4 Bg4 41.Bf3 Bf3 42.Kf3 c4 43.g4 hg4 44.Kg4 c3 45.h5 Kf7 46.h6 c2 47.Kf3 c1Q 48.Ke4 Qh6 0–1. barborski (1635) – golfx, kurnik, 2012.

2.c4 e5

3.a3 Nf6 =+.

3.Bb2 Nc6 4.b5 ab5 5.cb5 Nd4 6.e3 Ne6 7.Be5 d6 8.Bb2 h6 (8...Be7 9.Nf3+=) 9.Nf3+– Nf6 10.Be2 Be7 11.h3 (11.Nc3 d5+–) 11...Bd7 (11...0-0 12.0-0+–) 12.Nc3 0-0 13.0-0 Nc5 (13...d5 14.d4+–) 14.d4 (14.Qc2 d5+–) 14...Ne6 (14...Nce4 15.Ne4 Ne4 16.Qb3+–) 15.a4 b6 (15...Ra5 16.d5 Nc5 17.Qc2+–) 16.Qc2 (16.d5 Nc5+–) 16...Re8 (16...c6 17.Qd2 Ra5 18.Ba3+–) 17.Rfe1 (17.d5 Nc5+–) 17...Nh7 (17...c6 18.Rac1+–) 18.Ne4 (18.Rac1 Nhg5+–) 18...Nf6 (18...d5 19.Nc3 Nf6 20.Ne5+–) 19.Bd3 (19.Nf6 Bf6 20.Bc4 Qe7+–) 19...Nf8 (19...d5 20.Nf6 Bf6 21.Ba3+–) 20.Nc3 (20.Nf6 Bf6 21.e4 Ra7+–) 20...N8h7 (20...d5 21.Ba3+–) 21.e4 Nf8 22.e5 de5 23.Ne5 (23.de5!? Nh5+–) 23...Be6 (23...Ne6 24.Bc4+– (worse 24.Nd7 Qd7 25.Ne2 Bb4+–)) 24.Nc6 Qc8?? (24...Qd7 25.d5! (worse 25.Ne7 Re7 26.Re3 Nd5+–) 25...Nd5 26.Be4+– (26.Ne7?! Ne7 27.Rad1 Qc8+–)) 25.Rad1 (better 25.d5+–) 25...Bd6 26.Re3 (26.Re2 Qd7+–) 26...Nd5 27.Nd5 Bd5 28.Rde1 Re3 29.Re3 Bf4?? (better 29...Qd7+–) 30.Ne7 Kh8 31.Nc8 Rc8 32.Re7 (32.Re2 Bd6+–) 32...Bd6 33.Re3 Be6?? (33...Bf4 34.Re2 Rd8+–) 34.Be4+– Nd7 (34...Bd7 35.Bc6+–) 35.d5 1–0. DEFFM – GuestZQQW, freechess.org, 2016.

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.c4 a6).

3.b5 (--> 1.b4 e5 2.b5 a6 3.c4).

3.c5 c6 4.e4 d6 5.Bc4 (5.d4 dc5 6.de5 Qd1 7.Kd1 cb4–/+) 5...d5 (5...dc5 6.Qh5 Qe7 7.bc5–/+) 6.Bb3 (6.ed5 cd5 7.Be2 Nc6+=) 6...Nf6 (6...de4 7.Qh5 Qe7 8.Nc3–/+) 7.d3 (7.ed5!? Nd5 8.Qh5+=) 7...de4–/+ 8.Bb2 Bg4 9.Bf7? (better is 9.f3 ef3 10.Nf3–/+) 9...Kf7–+ 10.Qb3 (10.f3 ef3 11.Nf3 Nbd7–+) 10...Be6 11.Qd1 ed3 (better is 11...b6!? 12.Be5 bc5 13.bc5 Qd3 14.Bf6 Qd1 15.Kd1 gf6 16.Nd2–+) 12.Nf3 e4 13.Ne5 Ke7 14.Nd2 Nbd7 15.0-0 Qc7 16.Ne4 Ne5 17.Be5 Qe5 18.Qd3 Ne4 19.Rae1 Bf5 20.f4 Qe6 21.g4 Qg6 22.h3 h5 23.Qd6 Kf7 24.Qc7 Be7 25.g5 Bh3 26.Rf3 Rac8 27.f5 Qg5 28.Kh2 Qg2 0–1. MARYMARY – donny60, ChessWorld.net, 2011.

3.c5 Nc6!? –/+.

3.c5 g6 4.Bb2 Bg7 5.f4 Nh6 6.fe5 0-0 7.d4 d5 8.Nf3 Ng4 9.g3 Ne3 10.Qd2 Nc4 11.Qc3 Bg4 12.Bg2 Re8 13.Bc1 Nc6 14.Ng5?? f6 15.Nf3? fe5–+ 16.de5? Bf3 17.Bf3 Be5 18.Qd3 Ba1 19.Na3?? N6e5 20.Nc2?? Nd3 21.Kd1 Nf2 22.Ke1 Nh1 23.Na1 Ng3! 24.Nc2 Nf5 25.a3 Nfe3 26.Ne3 Ne3 27.Kf2 Nc4 28.Bf4 Na3 29.e4 de4 30.Bg4 Qh4 (31.Kf1 Qg4 32.Bg3 Rf8 33.Kg1 e3 34.c6 Rf2 35.cb7 Qd1) 0–1. alarconconsult – rla, internet, 2007.

2.c4 e6

3.a3 b6 4.Bb2 c5 5.Qb3 (5.bc5 bc5 6.e4 Qb6=) 5...Nf6 6.b5 d5 7.d3 d4 8.a4 a5 9.Nd2 Bb7 10.Qd1 Qc7 11.Ndf3 Bd6 12.Nh3 Nbd7 13.g3 h6 14.Bg2 Nh7 (14...g5 15.Nhg1–/+) 15.Bc1 (15.e3 g5 16.Nhg1 g4–/+) 15...Ndf6 (15...g5 16.Nhg1–/+) 16.Bd2 (16.0-0 g5 17.Ne1 Bg2 18.Kg2 g4+=) 16...0-0 (16...g5 17.Nhg1–/+) 17.Qc2 Rae8 18.0-0-0 Bc8 19.Qb2 Bd7 20.Nf4 Ra8 (20...e5 21.Nh3–/+) 21.e3+= Rfc8 22.e4 e5 23.Nd5 Nd5 24.ed5 Bf5 25.Qc2 Nf6 26.Nh4 Bh7 27.Rhe1 Ng4 28.Re2= Re8 29.h3 Nf6 30.g4 Re7 31.Nf5 Bf5 32.gf5 Rae8 33.f3 Nh5 34.h4 Ng3 35.Rf2 h5?? 36.Bh3 f6 37.Rg1 e4 38.fe4+– Ne4 39.de4 Re4 40.Qd1 Rh4 41.Bf1 Bg3 42.Rfg2 Bh2 43.Rh1 Ree4 44.Bd3 (44.Bd3 Re7 45.Be2+–) 1–0. huno – ivan67, kurnik, 2012.

3.a3 b6 4.Bb2 Nf6 5.Nf3 Be7 6.Nc3 0-0 7.e3 c6 8.Be2 a5 9.b5 c5 (9...Bb7 10.0-0=) 10.a4 Bb7 11.d3 Qc7 12.h3 Rd8 13.Qc2 d5 14.cd5 Nd5 15.Nd5 Bd5 16.e4 Bb7 17.0-0 Nd7 18.Rac1 Bf6 19.d4 Qf4 20.Bd3? (20.e5!? Be7 21.Rfd1=) 20...Rac8 (20...cd4!? 21.Nd4 Be5–+) 21.Qb1+= cd4 22.Rc8 Rc8 23.Nd4 (23.Bd4 Bd4 24.Nd4 Nc5–/+) 23...Nc5 24.Ne2 Qg5 25.Bc1 Qe5 26.Bf4 Qh5 27.e5 Nd3 (worse is 27...Be5 28.Ng3 Qh4 29.Be5 Na4 30.Rd1+–) 28.Qd3 Be5? (better is 28...Rd8 29.Qe3 Be7 30.Qb6 Bg2 31.Kg2 Qe2=) 29.Ng3+– Qh4 30.Be5 Qa4? (30...Bd5+–) 31.Qd7 Ba6 (31...Rf8 32.Bd6 Bg2 33.Rc1 Bh3 34.Bf8+–) 32.Rd1 h6 (32...Qd1 33.Qd1 Bb5 34.Qd4+–) 33.ba6 (33.ba6 Qd7 34.Rd7+–) 1–0. Rodriguez,Jean Pierre (1690) – David,Gerard (1610), Cap d'Agde Avenir op, 2008. (=1.c4 a6 2.b4 e6)

3.a3 d5 4.c5=.

3.a3 d6 4.Bb2 Nd7 5.e3 e5 6.Nf3 Ngf6 (6...e4 7.Nd4=) 7.Be2 (7.Nc3 Qe7=) 7...h6 (7...a5 8.0-0=) 8.0-0 b6 (8...a5 9.Nc3+=) 9.d4+– Bb7 (9...e4 10.Nfd2+–) 10.de5 de5 11.Nc3 (better 11.Ne5!? Ne5 12.Be5+–) 11...Bd6 12.Qc2 (12.Nh4 g6+=) 12...0-0 (12...c5 13.Rfd1 Qc7 14.e4 cb4 15.ab4 Bb4 16.Nd5 Nd5 17.ed5=+) 13.e4 Nh7 (13...a5 14.Rfd1+=) 14.Nd5 Bd5 (14...Nhf6 15.Rfd1+=) 15.cd5+– Ng5 16.Ng5 Qg5 17.Bf3 (17.Bd3 Rfd8+–) 17...Nf6 18.Rac1 Rac8 19.Qc6 Nh7 (19...Qg6 20.Rfe1+–) 20.g3 (20.Be2 Ra8+–) 20...Qf6 (20...Nf6 21.Bg2+–) 21.Bg2 (better 21.Be2+–) 21...Ng5?? (better 21...Qg5+–) 22.f4!+– Qe7 (22...ef4 23.Bf6 Pinning (23.Bf6 Deflection)) 23.fg5 Qg5 24.Bc3 h5 (24...Rcd8 25.Kh1+–) 25.Be1 (better 25.Rce1!? h4 26.Rf5 Qe7+–) 25...Qe3 26.Bf2 Qg5 (26...Qa3 27.Ra1 Qb4 28.Ra6+–) 27.Rc3 Qe7 28.Be3 h4 29.gh4 Qh4 30.Bf2 Qe7 31.Bg3 (31.Rg3 Rcd8+–) 31...f6 (31...a5 32.ba5 ba5 33.Qa4+–) 32.Rcf3 (32.Bh3 Rb8+–) 32...Rf7 (32...Qe8 33.Rc1+–) 33.Bh4 (33.Bh3 Rd8+–) 33...Rcf8 (33...Qe8 34.Rc1 Rd8 35.Qc4+–) 34.Bh3 Qe8 35.Be6 Qc6 36.dc6 Re8 1–0. pereira – bk1282, lichess.org, 2020.

3.a3 Qf6 4.Nc3 d5 5.cd5+= ed5 6.Bb2 Bd6 7.Nf3 c6?? 8.g3 Bg4 9.Bg2 Be5?? 10.0-0?? d4 11.Ne4+/– Qe6 12.Ne5 Qe5 13.d3 Nd7 14.Nd2?? Be2= 15.Qc1 Bf1–+ 16.Kf1 0-0-0 17.Nc4 Qh5?? 18.Bd4 Ndf6?? 19.Bf6 Nf6= 20.Kg1?? Rd3–+ 21.Ne3? Ng4 22.h3?? Ne3 23.fe3 Qg5 24.Kh2 Qe3 25.Qe3 Re3 26.Rf1 f6 27.Ra1 Rhe8 28.Kg1 Rg3 29.Kf2 Ree3 30.Ra2 Ra3 31.Ra3 Ra3 (32.Be4 g6–+) 0–1. guerino (2100) – nwishn (1900), net–chess.com, 2006.

3.Bb2 (--> 1.b4 e6 2.Bb2 a6 3.c4).

3.b5 ab5 4.cb5 c5 5.a4 d5 6.e3 Be7 7.Bb2 Bf6 8.d4 c4 9.Bc3 Ne7 10.Nf3 0-0 11.Be2 b6 12.0-0 Ng6 13.Nbd2 Re8 14.h3 Nd7 15.Ne1 Bb7 16.Nc2 e5 17.de5 Be5 18.Be5 Nde5 19.Nd4 Ne7 20.f4 N5g6 21.N2f3 Qd7 22.g3 Nf5 23.Nf5 Qf5 24.Kg2 Re3 25.Nd4 Qf6 26.Bf3 Ne7 27.Nc2 Rf3 28.Kf3 d4 29.Kf2 d3 30.Ne3 Qd4 31.Re1 Nf5 32.g4 Ne3 33.Re3 Re8 34.Qd2 Re3 35.Qe3 Qb2 36.Kg3 g6 37.Qe8 Kg7 38.Qe5 Qe5 39.fe5 c3 40.Kf2 c2 41.Ke3 Be4 42.Kd2 f5 43.a5 ba5 44.Ra5 Kf7 45.Ra6 fg4 46.hg4 h5 47.gh5 gh5 48.Rh6 Bg6 49.e6 Kg7 50.Rg6 Kg6 51.b6 Kf6 52.b7 h4 53.b8Q h3 54.Qh8 Ke6 55.Qh3 Kd5 56.Qd3 Ke5 57.Qc2 Kd5 58.Qd3 Ke5 59.Ke3 Ke6 60.Qd4 Kf5 61.Qe4 Kf6 62.Kf4 Kf7 63.Qe5 Kg6 64.Qf5 Kg7 65.Kg5 Kg8 66.Qf6 Kh7 ½–½. popovicigelu – cieciura, kurnik, 2012.

3.b5 ab5 4.cb5 d5 5.Bb2 Bd7 6.a4 Nf6 7.e3 c6 8.f4 Nh5 9.Nf3 Nf4 10.ef4 Qc7 11.Be5 Qb6 12.Nc3 f6 13.Bd4 c5 14.Bf2 d4 15.Ne4 f5 16.Neg5 h6 17.Nh3 Be7 18.Ne5 Bf6 19.Qh5 Ke7 20.Ng6 Kd8 21.Nh8 Be8 22.Qf3 Ke7 23.Bc4 Kf8 24.Qe2 d3 25.Qd3 Ba1 26.0-0 Bd4 27.Bd4 cd4 28.Re1 Kg8 29.Re6 Qd8 30.Rh6 1–0. jura1946 – beginner123, kurnik, 2012.

3.b5 ab5 4.cb5 Qf6 5.Nc3 Bc5 6.Nf3 d5 7.Bb2 Qe7 8.Qc2 Nf6 9.e3 0-0 10.d4 Bb4 11.Bd3 Re8 12.0-0 Bc3 13.Bc3 c5 14.dc5 Qc5 15.Bf6 Qc2 16.Bc2 gf6 17.a4 Kf8 18.a5 h6 19.Nd4 Bd7 20.Bd3 Ke7 21.Rfc1 e5 22.Nf5 Bf5 23.Bf5 Nd7 24.Rc7 Red8 25.Rb7 Ke8 26.Bd7 Rd7 27.Rd7 Kd7 28.b6 Kc6 29.Kf1 f5 30.Ke2 Kb7 31.Kf3 f6 32.Kg3 Rg8 33.Kh3 h5 34.Kh4 Rg2 35.a6 Kb6 36.a7 Rh2 37.Kg3 Rh1 38.a8Q Ra1 39.Qa1 Kc6 40.f4 e4 41.Qf6 Kc5 42.Qf5 Kc4 43.Qh5 d4 44.Qf7 Kd3 45.Qb3 Kd2 46.ed4 e3 47.d5 e2 48.Qb2 Kd1 49.Qe2 Ke2 50.d6 1–0. popovicigelu – profutm, kurnik, 2012.

3.b5 ab5 4.cb5 h6 5.Bb2 Ne7 6.e3 d6 7.Nf3 Rg8 8.Be2 g5 9.h3 Ng6 10.0-0 Bg7 11.Bg7 Rg7 12.d4 h5 13.Nh2 g4 14.hg4 hg4 15.Bg4 Qh4 16.Bh3 Rh7 17.Nf3 Qh6 18.Nbd2 e5 19.Re1 Bh3 20.g3 Bg4 21.Kf1 Qh1 22.Ke2 Qf3 23.Nf3 e4 24.Kd2 Bf3 25.Qc2 Kd8 26.Rac1 c6 27.Qb3 Ne7 28.bc6 Nbc6 29.Qb7 Rb8 30.Qa6 Rb2 31.Rc2 Rc2 32.Kc2 Nb4 33.Kb3 Na6 34.Rc1 Rh2 35.Rc2 Bd1 0–1. avinoam (1655) – 88robinho88, kurnik, 2012.

3.Nf3 Nc6 4.a3= Nf6 5.Nc3 Ng4 6.Ne4 d5+= 7.Neg5 Qf6 8.Bb2?? Nf2 9.Kf2?? Qf5?? 10.e3 h6 11.Nh3 e5 12.Be2 a5?? 13.Re1 e4 14.Nf4?? ab4? 15.Nh4 Qf6?? 16.Bf6 gf6 17.Nd5 Bd6 18.Nf6 Kf8 19.Ne4 Be5 20.d4 Bh2 21.Nf3 Bd6 22.Nfd2 ba3 23.Nc3 Bb4 24.Nd5 Ba5 25.Ra3 Rg8 26.Rh1 Rg6 27.Bh5 Rg5 28.Bf3 Rf5 29.Rh6 Nb4 30.Ne4 Ra6 31.Rh8 Kg7 32.Qh1 Nc2 33.Qh7# 1–0. Mphilliber – cubs_fan_1, ChessWorld.net, 2011.

2.c4 Nf6

3.d4 g6 4.Bb2 Bg7 5.e3 0-0 6.Nf3 d6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 a6).

3.Nf3=.

2.c4 g6

3.a4 Bg7 4.d4 (better 4.Nc3=) 4...c5?? (better 4...Nc6=+) 5.bc5+– Qa5 6.Bd2 Qc7 7.Bc3 (7.Nf3 Nc6 8.e3 e5+–) 7...Nh6 (7...d6 8.cd6 Qc4 9.de7 Ne7 10.e4+–) 8.e4 Nc6 9.d5 (better 9.Nf3+–) 9...Ne5?? (better 9...Bc3 10.Nc3 Nb4+–) 10.f4+– Nf3 (10...Rg8 11.Be5 Be5 12.fe5 Qe5 13.Ra2+–) 11.gf3 (11.Qf3 Bc3 12.Qc3 f6+–) 11...f6 (11...Bc3 12.Nc3 Qc5 13.d6+–) 12.Bd4 Qf4 13.Ne2 (better 13.Nd2!? Qh4 14.Bf2 Qh5+–) 13...Qf3 14.Bg2?? (better 14.Ng3 Qd1 15.Kd1+–) 14...Qg2–/+ 15.Rg1? (15.Ng3 e5 16.Bf2 0-0–/+) 15...Qh2 (15...Qe4!? 16.Nbc3 Qh4 17.Bf2 Qh2 18.Bg3–+) 16.Nd2 Qh4 17.Ng3 0-0 (17...e5 18.Bf2 Ng4 19.Nh1 Nf2 20.Nf2–/+) 18.Bf2 (18.Qb3 Nf5! 19.Bf2 Ng3 20.Bg3 Qh3–/+) 18...Qg4 (better 18...Ng4 19.Nf3 Qh3–/+) 19.Nf5?? (better 19.Qb3 Qf4 20.Bd4–/+) 19...Qd1–+ (19...gf5?! 20.Rg4 fg4 21.Bd4=) 20.Kd1 (20.Rd1 gf5 21.Be3–+) 20...d6 (better 20...gf5 21.Ra3 fe4–+) 21.Ne7+= Kh8 22.cd6 f5 23.Ra3 (23.Rb1!? fe4 24.Bc5+=) 23...fe4= 24.Be3 (24.Bc5 Nf7=) 24...Bg4 (24...Ng4 25.Nc8 Ne3 26.Re3=) 25.Kc1 (25.Ke1 Bf3=) 25...Bf5 26.Nf5 (26.Rb3 Ng4 27.Nf5 gf5=+) 26...Nf5–/+ 27.Bg5 (27.Re1–/+) 27...Nd4 (27...e3 28.Be3 Ne3 29.Re3–/+) 28.Re3 (better 28.Rg4 Nf3 29.Be3 (worse 29.Ne4 Ne5 30.Rf4 Rf4 31.Bf4 Nc4=) 29...Nd2 30.Kd2=) 28...Rae8?? (28...b5 29.ab5 ab5–/+) 29.d7+– (29.Ne4 Rf7 30.Rh1 Nb3 31.Kd1 Bd4+=) 29...Ra8 30.Re4 h6? (better 30...Nf5+–) 31.Be7 Rg8 32.Rg6 Kh7 (32...Nf5 33.Rb6 Ne7 34.Re7+–) 33.Rd6 White plans d8 (33.Rg7!? Rg7 34.d8Q Rd8 35.Bd8 Nf5+–) 33...Nf5 34.d8Q Rad8 35.Rd8 (worse 35.Bd8 Nd6 36.Bb6 Ne4 37.Ne4 Kg6–/+) 35...Ne7 36.Rg8 (36.Re7?! Rd8 37.Rb7 h5+–) 36...Ng8 37.Re7 (37.d6 Bf6+–) 37...Nf6?? (better 37...Ne7 38.Ne4 h5–+) 38.Nf3 (38.d6 Kg6 39.Rb7 Bf8+–) 38...Ng4 (38...b5+–) 39.d6 Kg6 (39...Nf6 40.Rb7 Kg8+–) 40.Rg7! Kg7 41.d7 Nf6 42.d8Q h5 43.Qf6! (43.Qf6 Kf6 44.Kd2+–) 1–0. afsharian – RX_Indonesia, lichess.org, 2018.

3.Bb2 Nf6 4.b5 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5 a6).

2.e3 b5

3.d4 Bb7 4.Nf3 d6 5.c4 c6 6.c5 d5 7.a4 Nd7 8.Qc2 g6 9.ab5 ab5 10.Ra8 Qa8 11.Bd3 Bg7 12.Bd2 Ngf6 13.0-0 0-0 14.Ne5 Qc8 15.Nc3 Qc7 16.f4 Ra8 17.Bb5 cb5 18.Nb5 Qc8 19.Nc3 Ne5 20.fe5 Ne4 21.Ne4 de4 22.b5 Bd5 23.c6 e6 24.Bb4 Rb8 25.Qe2 Qc7 26.Bd6 Qb6 27.Bb8 Qb8 28.Rc1 Qc7 29.Qb2 h6 30.b6 Qc6 31.Rc6 Bc6 32.Qc3 Bb7 33.Qc7 Bd5 34.b7 Bb7 35.Qb7 Bf8 36.Qc8 Kg7 37.Qd7 Kg8 38.d5 ed5 39.Qd5 Kg7 40.Qd8 Kg8 41.Qf6 Bg7 42.Qe7 Bf8 43.Qe8 Kg7 44.e6 fe6 45.Qe6 h5 0–1. varin123 – piernodoyuna, kurnik, 2012.

3.d4 Bb7 4.Nf3 Nf6 5.c4 e6 6.c5 d6 7.a3 dc5 8.bc5 Be7 9.Bd3 0-0 10.Bb2 Nbd7 11.Nbd2 Nc5 12.Bc2 Nce4 13.0-0 Nd2 14.Qd2 Bf3 15.gf3 Qd5 16.e4 Qh5 17.Qe2 Rfd8 18.Kh1 Ne8 19.Rg1 Bf6 20.e5 Be7 21.Rg4 c5 22.Rag1 g6 23.Qe4 c4 24.Bc3 Ng7 25.Bb4 Bb4 26.ab4 Qh6 27.Rh4 Qd2 28.Rh7 Kh7 29.Rg6 fg6 30.Qg6 Kg8 31.Qh7 Kf8 32.Qh8 Kf7 33.Bg6 Kg6 0–1. varin123 – roman2371, kurnik, 2012.

2.e3 e5

3.Bb2 Nc6 4.a3 Nf6 5.c4 b5 6.cb5+– ab5 7.d4 (7.Bb5 Bb7 8.Nf3+–) 7...h5? (better 7...ed4 8.Bb5 de3 9.Bc6 ef2 10.Kf2 dc6 11.Qd8 Kd8=+) 8.de5+– Ng4 9.Nf3 Be7 (better 9...Na7+–) 10.h3 Nh6 11.Bb5 Nb8 (11...Bb7 12.0-0+–) 12.Nc3 c6 13.Bc4 Bb7 (13...Ba6 14.Ba6 Ra6 15.Ne4+–) 14.Qc2 g6 (14...c5 15.Bd5 cb4 16.Bb7+–) 15.Rd1 c5 16.e6! fe6 Theme: Deflection from g6 (16...de6 A pinning theme 17.Rd8 A double attack) 17.Qg6 Nf7 18.Ne5 Rf8 19.Be6! Qc7 (19...de6 Exploits the pin 20.Rd8 Eliminates the defender d8) 20.Nb5 Qe5 (20...Qe5 21.Be5 Kd8 22.Bd7 Bd5 23.Rd5 Nd6 24.Nd6 Bd6 25.Qd6 Rf7 26.Qb6 Ke7 27.Qc5 Kd8 28.Bc7) 0–1. MiserableBoris – gordiemac, ChessWorld.net, 2006.

3.Bb2 d6 (--> 1.b4 e5 2.Bb2 d6 3.e3 a6).

3.g3 Bb4–/+ 4.Qg4 (4.a3 Be7–/+) 4...Bf8 5.Nf3 (5.Bb2 d5 6.Qa4 Nc6–/+) 5...d6–+ 6.Qh5 (6.Qa4 c6–+) 6...Nf6 (6...Be7 7.Nh4–+) 7.Qh4 (7.Qg5 Nc6 8.d3 Nb4–+) 7...Be7 8.Bh3?? (8.Qa4 c6–+) 8...Nd5 (8...Ng4 9.Qg4 Bg4 10.Bg4–+) 9.Qh5? (9.Qa4 b5 10.Qb3 Bh3 11.Qd5 c6–+) 9...0-0 (9...g6 10.Qh6 Bf8 11.Qg5 Bh3 12.Qd8 Kd8 13.Ng5–+) 10.Bf5?? (10.Bc8 Nf6 11.Qh3 Qc8 12.Qc8 Rc8–/+) 10...Bf5 11.Qf5 c5 12.h4 Bf6 13.g4?? Ne7–+ 14.Qd3 g6 15.g5?? Bg7 16.h5?? Nbc6 17.hg6 Ng6 18.Nh4?? Nb4 19.Qe2?? Qg5 20.Nf3 Qf6 21.Bb2 Nc2 22.Kf1 Na1 23.Ba1 Qe6 24.Ng5 Qa2 25.Rh7 Qa1 26.Qh5 Qb1 27.Kg2 Qf5 28.Rh8 Bh8 29.Qh7 1–0. steelballs – gera, Caissa.com, 2004.

2.e4 b5

3.a4 ba4 4.c4 (4.Ra4 e6+=) 4...Bb7 5.d3 d6 (5...e5 6.Ra4 Bc6 7.b5 ab5 8.cb5 Ra4 9.Qa4=) 6.Qa4+= Nd7 7.Be2 g6 8.Bb2 Ngf6 9.g4 h6 10.h4 g5?? (better is 10...Bg7=) 11.hg5+– Bg7 (11...Ne4 12.de4 e5 13.Nc3 Qg5 14.Nd5+–) 12.gf6 Bf6 13.f4 Bb2= 14.Ra2 Bg7 15.Nf3 White plans g5 15...e5 16.g5 hg5 17.Rh8= Bh8 18.fg5 c6 19.Bf1 f6 20.Bh3 fg5+= 21.Rg2 Bf6 22.Qd1 Qe7 23.Ke2 0-0-0 24.b5 Rh8 25.Bf5 Kc7 26.ba6 Ba6 27.Qa4 Nc5 28.Qa5 Kb7 29.Nc3 Ra8 30.Ke3 Qc7?? 31.Rb2+– Ka7?? 32.Qc7 Bb7 33.Bd7 g4 34.Bc6 Rb8 35.Bb7 Rb7 36.Rb7 Nb7+– 37.Nb5 Ka6 38.Ne1 g3 39.Kf3 Bg5 40.Nd6 Nd6+– 41.Qd6 Ka7 42.Qe5 Bd2 43.Ng2 Bb4 44.Qc7 Ka6 45.c5 Bc3 46.Qb6# 1–0. kotwielki – golfx, kurnik, 2012. (=1.e4 a6 2.b4)

3.a4 Bb7 4.Nc3 e6 5.ab5 Bb4 6.ba6 Na6 7.Bb2 Qh4 8.Nf3 Qh6 (8...Qg4 9.Ra4 c5 10.h3+–) 9.Nb5 (9.Ra4!?+/–) 9...Kd8 10.Ne5 Nf6?? (better is 10...Qf4 11.Bd3 Nh6+=) 11.Nf7+– Kc8 (11...Ke7 12.Nh6 gh6 13.Bf6 Kf6 14.e5 Ke5 15.Qh5 Kf6 16.Qh6 Kf7 17.Qf4 Kg8 18.Nc7 Nc7 19.Ra8 Ba8 20.Qc7+–) 12.Nh6 Rf8 13.f3 (better is 13.Bf6 Rf6 14.Qh5 Rf8+–) 13...gh6 14.Nd4 1–0. Nasikan,Nikolai – Butsenko,Leonid, Kurass Memorial op, 2003. (=1.e4 a6 2.b4 b5)

3.a4 c6 4.ab5+= cb5 5.Bb2 (5.Bb5!? Qb6 6.Qe2+=) 5...Bb7= 6.d3 d6 7.Qg4 Nf6 8.Qg3 Nbd7 9.Nf3 g6 10.e5 (10.Be2 Bg7 11.c3 d5+=) 10...de5 11.Ne5 Ne5 12.Be5 Bg7 13.Be2 Rc8 14.c3 0-0 15.0-0 Nh5 (15...Qd7 16.Re1+=) 16.Qe3 (16.Bh5!? Be5 17.Qe5 gh5 18.d4+/–) 16...Nf6+= 17.f4 e6 18.g4 Qd7 19.g5 Nd5 20.Qd4 Be5 21.Qe5 Qe7 22.Bf3= Rfd8 23.h4 f6 24.gf6+/– Qf6?? 25.Qf6+– Nf6 26.Be4 Be4 27.de4 Rd3 28.e5= Ne4 The pressure on the backward pawn c3 grows 29.Re1 Nc3+= 30.Nc3 Rcc3 31.Rac1 Rc1–+ 32.Rc1 Rd4 33.Rc8 Kg7 34.Rc7 Kh6 35.Rf7 Rb4 36.Rf6 a5 37.Re6 Rf4 38.Ra6 a4 39.Ra5 Rh4 40.Rb5 Re4 41.Ra5 a3! 42.Kf2 a2! 43.Kf3 Re1 44.Ra2 Re5 45.Kf4 Rf5 46.Kg4 Rc5 47.Rh2 Kg7 48.Rf2 Rc4 49.Kg3 h5 50.Rf1 g5 Black intends h4 51.Rf5 Kg6 52.Rd5 Rc3 53.Kg2 h4 54.Rd6 Kh5 55.Rd8 Rc2 56.Kf3 g4 57.Kf4 Rc4 58.Kf5–/+ Rc5 59.Kf4 g3 60.Rh8 Kg6 61.Rh4 Rc4 62.Kg3 Rc3 63.Kf2 Rc2 64.Ke3 Rc3 65.Kd4 Rg3 66.Rh8 Kg7 67.Rh1 Kg6 68.Rf1 Kg5 69.Ke4 Kg6 70.Rf4 Kg5 71.Rf5 Kg4 72.Rf4 Kg5 73.Rf8 Rg4 74.Ke5 Ra4 75.Rg8 Kh6 76.Kf6 Ra6 77.Kf5 Ra5 78.Ke4 Ra4 79.Kd3 Ra3 80.Kc2 Ra2 81.Kb3 Rf2 82.Kc3 Rf3 83.Kd4 Rf4 84.Ke5 Rf2 85.Rh8 Kg7 86.Rh3 Re2 87.Kf4 Rb2 88.Rg3 Kf7 89.Re3 Rb4 90.Kf3 Rb5 91.Ke2 Rb2 92.Kd3 Rb3 93.Kd2 Rb2 94.Kc3 Rg2 95.Rf3 Ke6 96.Re3 Kd6 97.Rh3 Ke6 98.Rh6 Kf5 99.Rh5 Kg6 100.Rh8 Kg7 101.Re8 1–0. miras62 – golfx, kurnik, 2012.

3.a4 c6 4.ab5+= cb5 5.Bb5 Bb7 6.Be2 Be4 7.Nc3?? (better is 7.Nf3+=) 7...Bg2–+ 8.Bf3 Bh1 9.Bh1 Nc6 10.b5 (10.Bc6 dc6 11.Qf3 Qc8–+) 10...ab5 11.Ra8 Qa8 12.Nb5 Qb7 (better is 12...Qb8!? 13.Bc6 dc6 14.Nd4 Qe5 15.Nde2 Qh2 16.Bb2–+) 13.c4 Nf6 14.Bb2 Qb6 15.Qf3 Qc5 16.Qd3 (16.Qe2 e6–+) 16...e6 (16...Ne5 17.Qf5 Nfg4 18.d4 Qc4 19.de5 Qb5 20.Qc2 Qa5 21.Bc3–+) 17.Ne2?! (17.Bc6 Qc6 (17...dc6?? 18.Nc7 Ke7 19.Ba3 Qa3 20.Qa3 Kd8 21.Qa5+–) 18.Bf6 gf6–+) 17...Be7 (17...Ne5!? 18.Qg3 Nfg4 19.Be5 Qe5 20.d4 Bb4 21.Kf1 Nh2 22.Kg2 Qe2 23.Kh2–+) 18.Nc7 Kf8 (18...Kd8 19.Nb5 Nb4 20.Qg3–+) 19.Nb5 (19.Bf6 gf6 (worse is 19...Bf6 20.Qd7 g6 21.Qc6 Qc6 22.Bc6+=) 20.f4 Rg8–+) 19...d5 20.cd5 (20.Na3 Nb4 21.Qc3 Qd6–+) 20...Nd5 (better is 20...Nb4 21.Qg3 Qb5–+) 21.Qg3 Kg8?? (better is 21...Nf6 22.Qc7 Nb4 23.Qb8 Ne8–+) 22.Qg7# 1–0. golemxiv – golfx, kurnik, 2011.

3.a4 e5 4.h4 (4.c3 Bb7=) 4...c5 (4...Bb4 5.ab5 Nf6+=) 5.a5 (better is 5.ab5 cb4 6.Bb2+=) 5...cb4–/+ 6.Nh3 Bc5 7.Ng5 d5 8.d3 (8.ed5 Nf6–/+) 8...Ba7 (8...f6!? 9.Nh3 Bd4 10.Ra2–+) 9.Nd2 h6 10.Ngf3 f6 11.g4 (11.ed5 Ne7–/+) 11...Qc7 12.ed5 Qc5 13.g5?? (better is 13.Ne4 Qd5 14.Nfd2–/+) 13…Qf2 0–1. redferarri – Eries, ChessWorld.net, 2011.

3.Bb2 (--> 1.b4 b5 2.Bb2 a6 3.e4).

3.c4 Bb7 4.cb5 ab5 5.f3 c6 6.a4 ba4 7.Ra4 Ra4 8.Qa4 Nf6 9.b5 cb5 10.Bb5 g6 11.Ne2 Bg7 12.0-0 0-0 13.d4 Qb6 14.Be3 Bc6 15.Bc6 dc6 16.Nd2 Qb5 (16...Qa6!? 17.Qa6 Na6+/–) 17.Qb5+– cb5 18.Nb3 (18.Rb1!?+–) 18...Rd8 19.Nc3 White plans d5 (better is 19.Rb1 Ne8 20.d5+/–) 19...Nh5? (better is 19...b4 20.Nb5 e6+=) 20.Nb5+– Nc6 21.d5 Ne5 22.Bd4 e6 23.d6 Nc4 24.Bg7 Kg7 25.Rd1 Nf6 26.Kf2 Ne8 27.d7 Nf6 28.Nc5 Nb6 29.Ke3?? Nbd7 30.Nd7 Rd7 31.Rd7 Nd7 32.f4 f5 33.e5 Nb6 34.Kd4 Nd5 35.g3 h6 36.Kc5 g5 37.fg5 hg5 38.Kd6 Kf7 39.Nd4 Ne3 40.Ne6 g4?? 41.Nf4 Nf1?? 42.e6 Ke8 43.Nh5 Nh2 44.Ng7 Kf8 45.Nf5 Nf1 46.e7 Ke8 47.Ng7 Kf7+– 48.e8Q Kg7 49.Qe5 Kg6 50.Qf4 Nh2 51.Qe4 Kg5 52.Qf4 Kg6 53.Ke5 Kh5 54.Kf6 Nf3 55.Qf5 Kh6 56.Qg6# 1–0. rybaktr – golfx, kurnik, 2012.

3.c4 Bb7 4.c5 Be4 5.d3 Bb7 6.d4 g6 7.d5?? (better is 7.a4+=) 7...Bg7–+ 8.c6 (8.Ne2 Ba1 9.Nbc3 e5–+) 8...dc6 9.dc6 Nc6 10.Qd8 Rd8 11.Nf3 Ba1 12.Nbd2 Nb4 13.Be2 Nc2 14.Kd1 Bf3 15.Kc2 Bg2 16.Rg1 Bc6 17.Ba3 Bf6 18.Nb3 Be4 19.Kc1 Nh6 20.Nc5 Bc6 21.Na6 0-0 22.Nc7 Rc8 23.Nb5 Bb5 24.Kd1 Be2 25.Ke2 Ra8 26.Bc5 Ra2 27.Kf3 Rc8 28.Be3 Rc3 29.Rd1 Nf5 30.Rd8 Kg7 31.h3 e6 32.Kg4 Ne3 33.fe3 Bd8 34.e4 Rg2 35.Kf4 Rh3 36.e5 Bc7 37.Ke4 Rh4 38.Kf3 Ra2 39.Kg3 Rb4 40.Kf3 Ra3 41.Ke2 Rb2 42.Kd1 Ra1# 0–1. zatyczka28 – wk1234, kurnik, 2012.

3.c4 Bb7 4.f3 d6 (4...e6!? 5.cb5 Be4 6.ba6 Na6 7.Ba6 Bb1=) 5.d4 (5.cb5 e5+/–) 5...c6 6.Bf4 (6.Nc3 Nf6+=) 6...Nd7 7.Bg3 g6 8.Nh3 Bg7 9.Nf2 (9.Bf2 Ngf6=) 9...Ngf6 (9...c5!? 10.Nd2 Bd4–/+) 10.Nd2= 0-0 11.Rb1 e5 12.d5 cd5 13.cd5 Nb6 14.Bd3 Na4 15.Qc2 Rc8+= 16.Qd1? Nc3–+ 17.Qc1 Nb1 18.Qb1 Qb6 19.0-0 Qe3 20.Nb3 Rc7 21.Re1 Qb6 22.h3 Rfc8 23.Kh2 Rc3?? 24.Be2?? Nh5–+ 25.Ng4? Ng3 26.Kg3 f5! 27.ef5 gf5 28.Na5?? fg4 29.Nb7 Qb7 30.Qf5 Qf7 31.Qg4 Rc1 32.Bd3 Re1 33.Qc8 Qf8 34.Qg4 Qf4! 35.Qf4 ef4 36.Kf4 Be5 37.Kf5 Kg7 38.f4 Bc3 39.a3 Bb2 0–1. bigiel52 – golfx, kurnik, 2011.

3.c4 bc4 4.Bc4 e6 5.Nf3 Bb7 6.Nc3 h6 (better 6...Bb4 7.Rb1 Nc6=) 7.d4?? (7.a3+=) 7...g5?? (7...Bb4 8.Bd2 Bc3 9.Bc3 Be4 10.d5–/+) 8.h3?? (8.a3 Ne7+–) 8...Bg7 (better 8...Bb4 9.Bd2 Bc3 10.Bc3 Be4=+) 9.0-0+= d6 10.Rb1 Nd7 11.Bb2 Nb6 12.Bb3 Nf6 (12...h5 13.d5 g4 14.Nd4 ed5 15.Nf5 (worse 15.ed5 gh3 16.Nf5 Qg5+=; worse 15.hg4 hg4 16.Nf5 Be5=) 15...Bc3 16.Bc3+–) 13.e5 (13.d5 ed5 14.Nd5 Rb8+–) 13...Nfd5 (13...de5 14.Ne5 (worse 14.de5 Qd1 15.Nd1 Nfd5–/+) 14...0-0 15.a3=) 14.a4 (14.Nd5 Nd5 15.Ba4 Ke7+=) 14...Nc3 15.Bc3 Nd5 (15...h5 16.Nh2=) 16.Bd2 f5 (16...de5 17.de5 Ne7 18.Qe2=) 17.ef6 (17.Qe2 Qe7+=) 17...Bf6 (17...Qf6 18.Re1=) 18.Re1 Qd7 19.Qc2 0-0-0 (19...Kd8!?+=) 20.Bc4+– Rdg8 21.b5 g4 22.ba6 Ba8 (22...gf3 23.Qb3 Rg2 24.Kh1+–) 23.hg4 (23.a7 Qf7 24.Rec1 c5 25.Rb8 Kc7 26.hg4 Rb8 27.ab8R Rb8 28.Bd5 Bd5 29.dc5 Rb7+–) 23...Rg4+– 24.a7 Nb6?? (24...Qg7 25.Rec1 c5 26.Rb8 Kd7 27.Bd5 Rg2 28.Kf1 Rf2 29.Kf2 Bd4 30.Kf1 Bd5+–) 25.Be6 Bf3 26.Bd7 Kd7 (26...Nd7 27.Qd3 Bg2+–) 27.Qf5 Kd8 28.Qf6 Kd7 (28...Kc8 29.Qh8 Rg8 30.Qg8 Kd7 31.Qe8) 29.Re7 Kc6 30.Qf3 (30.Qf3 d5 31.Qf6 Kb7 32.Qb6 Ka8 33.Qb7) 1–0. UthredofBB (1755) – adabriwala, lichess.org, 2019. (=1.e4 a6 2.b4 b5)

3.c4 c6 4.c5 e5 5.d4 d6 6.d5 (better is 6.de5 dc5 7.Qd8 Kd8 8.a4=) 6...dc5–/+ 7.Nc3 (better is 7.Bb2!?–/+) 7...cb4–+ 8.Nce2 Nf6 9.Nf3 Ne4 10.Ne5 b3 (10...b3 11.Qd4 cd5–+; worse is 10...cd5 11.Be3–+) 0–1. benjaminhaskins – ecperreault (2295), net–chess.com, 2011.

3.Ne2 Bb7 4.Ng3 e6 5.c3 (5.a4 Nf6=) 5...c5 (5...d5!?=) 6.bc5+= Bc5 7.d4 Be7 8.Nd2 d5 9.e5 Nh6 (9...Qc7 10.Qf3=) 10.Be2 (10.a4 b4+=) 10...0-0 11.h3 (11.a4 Qc7 12.Nb1 f6 13.Bh6 gh6 14.ef6 Bf6 15.ab5 e5+=) 11...f5 12.Nf3 Nf7 13.0-0 Nc6 14.a3 Na5=+ 15.Rb1 Nc4 16.a4 Bc6 17.ab5 Bb5 18.Ra1 Qc7 19.Nd2 Ng5 20.Nc4= Bc4 21.Bc4 Qc4 22.Bg5 Bg5 23.Qh5 Bh6 24.Rab1 Ra7 25.Rb6 Qc3 26.Re6=. guest1207 – guest744_jjirous, ICC, 2000.

3.Nf3 Bb7 4.Nc3 d6 5.d4 Nd7 6.a3 c5 7.Be2 cd4 8.Qd4 Ngf6 9.Bb2 g6 10.Qd3 Bg7 11.Nd5 0-0 12.Nf6 Nf6 13.0-0 (better is 13.Nd2!?+=) 13...Be4–/+ 14.Qd2 Bb7 15.Rfd1 (15.Bd4 Qc7–/+) 15...Rc8 (15...Ne4 16.Qc1 Qb6 17.Rf1–+) 16.Bd3 Qd7 17.Ne1 e5 18.Qe2? (18.Rac1 Qe6–/+) 18...Rc7 (18...e4 19.a4 ed3 20.Qd3–+) 19.Rab1? (19.f3 Nd5 20.Qd2 f5–/+) 19...Rfc8 (better is 19...e4–+) 20.f3 Qe6 Black prepares e4 21.Kh1 d5 22.Qf2? e4 23.fe4 de4 24.Bf6? Qf6 25.Qf6 Bf6 26.Bf1 e3 27.Rd7 Rd7 28.Nf3 Rc2 29.Re1 Bf3 30.gf3 Rdd2 31.Re3 Rh2 32.Kg1 Bd4 33.a4 Be3# 0–1. obrad – golfx, kurnik, 2012.

3.Nf3 Bb7 4.Nc3 d6 5.d4 Nd7 6.Bd3 c5 7.bc5 dc5 8.d5 c4 9.Be2 Ngf6 10.a3 g6 (10...e6 11.de6 fe6 12.Nd4+=) 11.0-0 Bg7 12.Rb1 0-0 13.Bb2 Nc5 14.Na2 (better is 14.Re1!?+=) 14...Nce4–/+ 15.Qd4 (better is 15.Bc4!? Rc8 16.Bb3–/+) 15...Qd5–+ 16.Qb6 Qc6 17.Qe3 e6 18.Rbd1? (18.Ne5 Qc7 19.Bf3 Rad8–+) 18...Rfd8 (better is 18...Ng4!? 19.Qf4 Bb2 20.Qg4–+) 19.Ne5 Qc5 20.Qh3?? (20.Bd4 Rd4! 21.Qd4 Qa3 22.Qb6–+) 20...c3! 21.Ba1 Qe5 22.f3 Qc5 23.Kh1 Nf2 24.Rf2 Qf2 25.Bd3 Nh5 26.Bc3 Nf4 27.Qg3 Qg3 28.hg3 Nd3 29.cd3 Rd7 30.Bg7 Kg7 31.Nc1 Rad8 32.Kh2 a5 33.Rd2 b4 34.ab4 ab4 35.Rb2 Ba6 36.Rb4 Bd3 37.Nd3 Rd3 38.Rb2 Rd2 39.Rb7 Ra2 40.Rb1 Rdd2 41.Rg1 f5 42.Kh3 e5 43.Kh2 h5 44.Kh3 g5 45.Kh2 e4 46.fe4 fe4 47.Kh3 g4 48.Kh4 Kg6 49.Rf1 Rg2 50.Rf6 Kg7 51.Re6 Rh2 52.Kg5 Ra5 53.Kf4 Ra4 0–1. obrad – golfx, kurnik, 2012.

3.Nf3 Bb7 4.Nc3 e6 5.a3 h6 (5...Nf6 6.e5 Nd5 7.Nd5 Bd5 8.d4=) 6.d4+= Bc6 7.d5 Bb7 8.de6 de6 9.Qd8 Kd8 10.Bd3 f6 (10...c5!? 11.Rb1 Nf6 12.bc5 Bc5+=) 11.Be3+/– e5 12.0-0 f5? (better is 12...c5 13.bc5 Nd7+/–) 13.Ne5+– Ke8 14.ef5 Nf6 15.f3 (15.Ng6 Rh7+–) 15...Bd6 16.Ng4 (16.Ng6 Rg8+–) 16...h5 17.Nf6 gf6 18.Bd4 Kf7 19.Ne4 Nc6 20.Nd6 cd6 21.Bc3 Ne5 22.Be5 de5 23.c4 Bc6 24.c5 Rag8 25.g3 Rg5 26.Be4 Be4 27.fe4 h4 28.Rf3 hg3 29.hg3 Rh4 30.Kf2 Re4+/– 31.Rd1 a5 32.ba5+– Ra4 33.Rd7 Ke8 34.c6 Ra5 35.Rfd3 Rf5 36.Ke2 Ra8 37.c7 (37.c7 e4 38.Rd8 Ke7 39.R3d7 Ke6 40.Ra8+–) 1–0. larniletter – xorb, ChessWorld.net, 2010.

2.e4 d5

3.ed5 Qd5 4.Nc3 Qe6 5.Be2 b5 6.Nf3+= Bb7 7.0-0 Nf6 8.Ng5 Qc8 9.Bf3 c6 10.d4 h6 11.Nge4+/– Ne4 12.Be4 e6+= 13.Bf4 Bb4=+ 14.Ne2 Nd7 15.c3 Ba5 16.a4 Bb6 17.a5 Ba7 18.Bd6 Bb8 19.Bb4 Qc7 20.Ng3 Nf6 21.Bf3 Ba7 22.Re1 Rd8 23.Qb3 Rd7 24.Rad1 Bc8 25.c4 Bd4=+ 26.cb5 ab5 27.Rc1 c5 28.Bc3 Ba6 29.Ne2? c4 30.Qa3 Bc5 31.Bb4 Bb4 32.Qb4 e5?? 33.Nc3+= Re7 34.Bd5?? 0-0–/+ 35.h3 Rd8 36.Rcd1 Red7–+ 37.Bf3 e4! 38.Be2? Qc6 39.Rd7 Rd7 40.Rd1 Bb7?? 41.Rd7=+ Nd7 42.Bg4? e3! 43.Bf3 ef2 44.Kf2 Qf6 45.Qb5 Bf3 46.gf3 Qc3 47.Qd7–/+ Qa5 48.Qe8 Kh7 49.Qe4 g6 50.Qc4 Qa7 51.Kg3 f5 52.Qc1 Qb8 53.Kg2 g5 54.Qc2 Kg6 55.Qc6–/+ Kh5 56.Qf6 Qf4 57.Qf7? Kh4 (58.Qd5 Qg3 59.Kf1 Qh3 60.Kg1 Kg3–+) 0–1. chess55555 – inaldo, internet, 2007.

3.ed5 Nf6 4.Nc3 Nd5=+ 5.Nd5 Qd5 6.Bb2 e5 7.c4 Qe6=+ 8.a3 a5 9.b5 c5 10.Qe2 Bd6 11.Nf3 Nd7 12.g3 0-0 13.Bg2 Re8 14.0-0 Rb8 15.Ng5 Qe7 16.Ne4 b6 17.Nd6 Qd6 18.f4 Bb7 19.Bb7 Rb7 20.Rad1 f6 21.d3 Kh8 22.fe5 fe5 23.Rf7+/– Qe6 24.Rdf1 Rbb8 25.Qe3 h6 26.Qe4+= Re7? 27.Re7?? Qe7+= 28.Qd5 Rd8 29.Rf7 Qe8 30.Qf3 Kg8 31.Rf5 Qe6 32.Qe4 Re8 33.a4 Rf8 34.Rf8 Kf8 35.Kg2 h5 36.Qf3 Qf7 37.Qf7 (37.Qa8 Ke7=). Krueger,Erich – Roever, corr SOK–87–10, 1987.

2.e4 e5

3.a3 d6 4.h3 (4.Nc3 Nf6=) 4...Nf6 5.Bb2 (5.Nc3 Be7=) 5...Be7 (5...Ne4 6.Qe2 f5 7.Nf3–/+) 6.d3 (6.Nc3 0-0=) 6...Bd7 (6...0-0 7.Nf3+=) 7.Nf3 Ba4 (7...0-0 8.Be2=) 8.Nc3= Qd7 (8...Bc6 9.Be2=) 9.Na4 (9.d4 ed4 10.Nd4 0-0+=) 9...Qa4 10.c4 Qd7 (10...Qd1 11.Rd1 0-0 12.Nh4+=) 11.Be2 Nc6 12.0-0 h6 (12...0-0 13.d4 ed4 14.Bd3+= (worse is 14.Bd4 Ne4 15.Re1 Bf6+=)) 13.Rc1 (13.Re1 0-0+=) 13...0-0 14.Re1 (14.d4+=) 14...b5 (better is 14...Qe6!?+=) 15.cb5 ab5 16.Bf1 Bd8 17.d4+/– Re8?? 18.d5 Na7+/– 19.Nh2 Be7+= 20.Qc2 Rec8 21.Be2 c6 22.dc6 Rc6 23.Qb1 Rac8 24.Bf3 Qc7 25.Rc6 Qc6 26.Rc1 Qb7 27.Rc8 Nc8 28.Ng4 Nb6 29.Nf6 Bf6 30.Bc1 Nc4 31.Be2 d5= 32.ed5 Qd5 33.Bf3 Qd8 34.Qb3 Bg5 35.Bg5+= Qg5 36.a4 Qc1= 37.Qd1 Qd1 38.Bd1 ba4 39.Ba4 Nb6 40.Bc6 f6 41.b5 Kf8 42.f3 Ke7 43.Kf2 Kd6 44.Ke3 f5 45.Kd3 g5 46.g3 Kc5 47.Ke3 Nc4+= 48.Kd3 Nd6 The isolani on b5 becomes a target 49.Bd7 Nb5 50.Bf5= Nd6 51.Bg6 Kd5 52.Be4 Ke6 53.g4 Kf6 54.Ke3 Nc4 55.Kd3 Nb6 56.Ke3 Na4 57.Kd3 Nb6 58.Bc6 Nc8 59.Bd7 Ne7+= 60.Bb5 Ng6 61.Ke4 Nf4 62.Bf1 h5 63.gh5 Nh5 64.Bg2 Ng3 65.Ke3 Kf5–/+ 66.Kf2 Kf4–+ 67.Kg1 Ne2?? 68.Kf1? Ke3–+ 69.Ke1 Ng3 70.Kd1 Kf2 71.h4 gh4 72.f4 ef4 73.Bd5 f3 74.Bc6 h3 75.Bf3 Kf3 76.Ke1 h2 (76...h2 77.Kd2 Ne4 78.Kc1 h1Q 79.Kb2 Qh8 80.Kb3 Qc3 81.Ka4 Qc4 82.Ka5 Nc3 83.Kb6 Nd5 84.Ka5 Qc5 85.Ka4 Qb4#) 0–1. pillsbury (2030) – zekota (2235), net–chess.com, 2010.

3.a3 h5 4.Bb2 d6 5.Bc4 g6 6.d4 Qe7 7.de5 de5 8.Nf3 f6 9.0-0 Bg4 10.Nc3 c6 11.Qd3 Nh6 12.Nh4 Qh7 13.f3 (13.h3 g5 14.Nf3 Bd7+/–) 13...Bd7+= 14.f4 g5 (better is 14...ef4!? 15.Rae1 g5+=) 15.fg5+– fg5 16.Nf5 Bf5 17.ef5 Nd7 18.Ne4 Nf5 (18...0-0-0 19.Rad1 Ng4+–) 19.Ng5 Qg6 (19...Qe7 20.Qf5 0-0-0+–) 20.Bf7 (20.Bf7 Qf7 21.Nf7+– (21.Qf5?! Qf5 22.Rf5 Bh6+/–)) 1–0. Creatchy – 2buddies, ChessWorld.net, 2015.

3.Bb2 Nc6 4.b5 (4.Nf3 d6=) 4...ab5 5.Bb5 d6 (5...Nf6 6.Nf3=) 6.Nc3 (6.d4 Nf6=) 6...Bd7 (6...Qg5 7.Nd5 Qg2 8.Bc6 Kd8 9.Qf3 Qf3 10.Nf3 bc6 11.Nb4=+) 7.Nf3 (7.Nge2 Nf6=) 7...h6 (7...Nf6 8.0-0=) 8.0-0+= Nf6 9.d3 (9.d4 Be7+=) 9...Be7= 10.Nd5 (10.d4 0-0=) 10...Nd5 11.ed5 Nb4 12.Bd7 Qd7 13.c4 Qf5 (13...Qa4 14.Qd2=) 14.Qb3 (14.Ne1 0-0=+ (14...Na2? 15.Qb3+–)) 14...Nd3 15.Rad1? (better is 15.Qb7!? 0-0 16.Bc3=) 15...Nc5–/+ 16.Qb5 Kf8 (16...Qd7 17.a3–/+) 17.Nd2 (17.a3 Kg8–/+) 17...Qc2 18.Nf3 (18.a3 Qa4–/+) 18...Qa4 19.Ne5 (19.Bc3–+) 19...Qb5 20.cb5 de5 21.Be5 Bd6 (< 21...Ra2 22.Ra1 Ra1 23.Ra1–+) 22.Rfe1 (22.Bd6 cd6 23.Rd2 Ra5–+) 22...Ra2 23.Bd6 (23.b6 Be5 24.Re5 cb6–+) 23...cd6 24.Re3 (24.Ra1 Ra1 25.Ra1 Ke7–+) 24...Rb2 25.Rde1 g6 26.g4 (26.h4 Rb5 27.g4 Kg7–+) 26...Rb5 27.h4 Rb4 (28.f4 Rf4–+) 0–1. dale3 – bamboo, Live Game Caissa's Web, 2005.

3.Bb2 Nf6 4.Nf3=.

3.b5 (--> 1.b4 e5 2.b5 a6 3.e4).

3.c3 d5 4.ed5 Qd5 5.Nf3 =+.

3.c3 d6 4.Bc4 Nf6 5.Qc2 (5.d3 c6=) 5...Be7 6.d4 (6.d3 b5 7.Bb3 a5 8.ba5 Ra5=) 6...ed4=+ 7.cd4 (7.Nf3 dc3 8.0-0 Nc6–/+) 7...0-0 (7...d5 8.ed5 b5 9.Bb3 Bb4 10.Bd2 Bd2 11.Nd2–/+) 8.Nf3 (8.a3 d5 9.ed5 Re8=+) 8...h6 (8...d5 9.ed5 Bb4 10.Bd2 Re8 11.Ne5 Bc5–/+) 9.Nh4?? (better 9.Nc3!?=) 9...Ne4 (9...d5 10.ed5 Bb4 11.Bd2 Re8 12.Kf1 Bd2 13.Nd2 Nd5 14.Bd5 Qd5 15.Nhf3–+) 10.Ng6 Bf5 (better 10...Re8 11.Qe4 Bg5–+) 11.Ne7?? (better 11.Nf8 d5 12.Bd3 Bb4 13.Bd2–/+) 11...Qe7–+ 12.0-0 c6?? (better 12...Ng3! 13.Qc3 Nf1 14.Bf1–+) 13.Re1 (better 13.Bd3!? Bg6 14.f3=+) 13...d5–+ 14.Bd3 Nd7 (better 14...Qb4 15.Nc3 Qd4–+) 15.f3? (better 15.a3 Qf6 16.Be3–/+) 15...Qb4–+ 16.Re3 Qd4 17.fe4 de4 18.Be2?? (18.Bf1–+) 18...c5 (better 18...Qa1 19.Nd2 Rfe8–+) 19.Qc3 (19.a4 b5 (worse 19...Qa1 20.Bb2 Qa2 21.Bc4 Qb2 22.Qb2+–) 20.Raa3 c4–/+) 19...Qc3 (better 19...Nf6!? 20.Bb2 Nd5 21.Qd4 cd4 22.Bd4 Ne3 23.Be3 Be6–+) 20.Nc3=+ Nf6 21.Ba3 b6 22.Rd1 (better 22.Rb1 Rfb8 23.Bd1=+) 22...b5?? (better 22...Rfd8–/+) 23.Bc5+– Rfc8 24.Be7 (24.Bd4!? Be6 25.a3+–) 24...Ng4+= 25.Bg4 Bg4 26.Rd5 Re8 27.Re4 (better 27.Bc5 Be6 28.Rd6=) 27...f5?? (better 27...Be6 28.Re6 fe6–/+) 28.Ree5+– b4? (28...Rac8 29.Bb4 Re5 30.Re5+–) 29.Ne2 (better 29.Bb4!? f4 30.Re8 Re8 31.Rd4+–) 29...Be2 30.Re2 Ra7 31.Rde5 g6 (31...a5 32.Bc5 Re5 33.Re5+–) 32.Bb4 Rb8 (32...Re5 33.Re5 Kf7 34.Kf2+–) 33.Bc3 (33.Bc5 Rc7+–) 33...Rf8 (33...Rc7 34.Bd2 g5 35.Be1+–) 34.Re6 Kh7 (34...Rc8 35.Bb2 Kh7+–) 35.Re7 Re7 36.Re7 Kg8 37.Rg7 Kh8 38.Rg6 Kh7 39.Ra6 (39.Rg7 Kh8+–) 39...Rc8 40.Bd2 (40.Bd2 h5 41.Rh6 Kg8 42.a3+–) 1–0. kirklandlake (1685) – Greg1982, ChessWorld.net, 2011.

3.c3 Nf6 4.Qe2 (4.Nf3 Nc6=+) 4...d6 (4...Nc6 5.Nf3=+) 5.h3 (5.Nf3 Be7=+) 5...b5 (5...Be7 6.Nf3=+) 6.d4 (6.a4 ba4 7.Nf3 Bd7=) 6...Be7 (6...ed4 7.cd4 Qe7 8.Nc3=) 7.d5 (7.de5 de5 8.a4 c5=) 7...Bb7 (7...c6 8.dc6 Qc7 9.a4 ba4 10.Qc2=) 8.h4 (8.a4 c6=) 8...h6 (8...c6 9.dc6 Bc6 10.Nd2=+) 9.h5 (9.a4 c6=) 9...Qd7 (9...c6 10.dc6 Nc6 11.a4=+) 10.Rh3 (10.a4 ba4 11.c4 0-0=+) 10...c6 11.a4 ba4 (11...cd5 12.ed5 0-0 13.Rg3–/+) 12.c4=+ cd5 13.cd5 Qc7 (better is 13...0-0=+) 14.Be3?? (better is 14.Rc3 Qd7 15.Rg3=) 14...Ne4–/+ 15.Qg4 (15.Qd3 Nf6 16.Nc3 0-0–+) 15...Ng5–+ 16.Bg5 Bg5 17.Nd2 (better is 17.Rc3 Qd7 18.Qd1–+) 17...Qc3?? (better is 17...Bd5 18.Rd3 Be6–+) 18.Rc3+– Nd7 (18...0-0 19.Bc4+–) 19.b5 (better is 19.Ne4 Bd5 20.Nd6 Ke7 21.Nf5 Kf8 22.Ra4 Nf6 23.Ra6 Rb8+– (23...Ng4?? 24.Ra8 Ba8 25.Rc8 Bd8 26.Rd8)) 19...ab5 (19...Nf6 20.Qa4 0-0 21.ba6 Bd2 22.Kd2 Bd5 23.Ke1+–) 20.Bb5 Rd8 (20...0-0 21.Bd7 Bd5 22.Rd3+–) 21.Rc7 Bc8 22.Rac1 0-0 23.Ngf3 Nf6 24.Qa4 Nd5 25.Ra7 Nf4 26.Ba6 Ng2 27.Kd1 Nf4 28.Ne4 Bg4 29.Rc3 Bh5 30.Bb7 d5 31.Neg5 hg5 32.Ra8 e4? 33.Rcc8 Bf3 34.Kc1 Nd3 35.Kd2 Rc8 36.Bc8 Nc5? 37.Qc2 Nd3 38.Ra5 Rd8? 39.Bb7 Nf4? 40.Bc6 Rc8 41.Qc3 f6?? 42.Qc1 Nd3?? 43.Bd5 Kh7 44.Qc8 Nf2 (45.Qf5 Kh6 46.Ra8 e3 47.Kc3 Nd1 48.Kd4 g6 49.Rh8 Kg7 50.Rg8 Kh6 51.Qg6#) 1–0. Bogdan – crca108, mySchach.de, 2005.

3.d4 Bb4 4.c3 Be7 5.d5 c6 6.dc6 Nc6 7.Nf3 Bc5 8.Be3 Be3 9.fe3 Qb6 10.Bc4 Qe3 11.Qe2 Qc1 12.Qd1 Qe3 13.Be2 Qe4 14.Nbd2 Qg6 15.Nh4 Qf6 16.g3 d5 17.Rf1 Qe6 18.Rf5 Qh6 19.Re5 Ne5 20.Bf1 Nf6 21.Nhf3 Bg4 22.Qa4 b5 23.Qa3 Bf3 24.Qd6 Nfg4 25.Qc5 Nh2 26.Nf3 Nef3 27.Kf2 Qd2 28.Be2 Qb2 29.Qc6 Kf8 30.Qa8 Ke7 31.Qb7 Kf6 32.Qb6 Kg5 33.Rh1 Qc3 34.Rh2 Nh2 35.Qd8 0–1. wee harv – Eries, ChessWorld.net, 2012.

3.d4 ed4 4.Qd4 Nc6 5.Qb2 Bb4 6.Bd2 Bd2 7.Nd2 Qf6 8.c3 (8.Rb1 Qb2 9.Rb2 Nge7–/+) 8...b5 9.Ngf3 Nge7 10.h3 0-0 11.Be2 d5 12.0-0 de4 13.Ne4 Qg6 14.Ng3 Nf5 15.Bd3 Re8?? (better is 15...Qf6=+) 16.Nh4! Qd6 (16...Nh4 17.Bg6) 17.Bf5 b4 (17...Qf6 18.Rfe1 Ne5 19.Be4+–) 18.Bc8 Rac8 19.cb4 Nb4? (19...Qb4 20.Qc1+–) 20.Ngf5 (better is 20.Nhf5 Qf8 21.Nh5+–) 20...Qf6 (20...Qf8+–) 21.Qb4 g5 22.Qg4 (better is 22.Rae1 gh4 23.Ne7 Kh8 24.Nc8 Rc8 25.Rc1+–) 22...Re5 (22...h5 23.Qh5 gh4 24.Qg4 Kf8+–) 23.f4 (better is 23.Nh6 Qh6 24.Qc8 Qf8+–) 23...h5 (23...Ree8 24.fg5 Qb6 25.Rf2+–) 24.Nh6! Kh8 25.Qc8 (25...Kh7 26.Qg8 Kh6 27.fg5 Rg5 28.Rf6 Rg6 29.Rg6 fg6 30.Qg6#) 1–0. pinecrest1981 – Oswaldo, Live Game Caissa's Web, 2004.

3.Nf3 Bb4 4.Bb2 Nc6 5.a3 Bc5 6.Be2 Nh6 7.0-0 d6 8.Bc4 0-0 9.d3 b5 10.Bd5 Bb7 11.Bc1 Rb8 12.Bg5 Ne7 13.Qd2 Bd5 14.ed5 Nhf5 15.h3 f6 16.Bh4 Nd5 17.Bg3 Bd4 18.Nd4 Nd4 19.Qd1 c5 20.Nd2 Nc3 21.Qg4 f5 22.Qh5 Qe8 23.Qe8 Rbe8 24.Kh1 g5 25.Bh2 f4 26.f3 c4 27.dc4 bc4 28.Nc4 Ndb5 29.Bg1 Rb8 30.Rfe1 Rfe8 31.Nd2 d5 32.Nb3 e4 33.fe4 Ne4 34.Kh2 Rbc8 35.Rac1 Na3 36.Bd4 Nc4 37.Ra1 Ra8 38.c3 Re6 39.Ra2 Ne3 40.Be3 fe3 41.Re3 Rc6 42.Nd4 Rc4 43.Ra1 Nc3 44.Ne6 Re4 45.Re4 Ne4 46.Nc7 Ra7 47.Nd5 Kg7 48.Re1 Nd6 49.Re6 Nf5 50.Re5 Rf7 51.g4 Nd6 52.Re6 Rd7 53.Kg3 a5 54.Re5 h6 55.Nb6 Ra7 56.Na4 Nc4 57.Rc5 Nd6 58.Rd5 Ne4 59.Kf3 Nf6 60.Rf5 Kg6 61.Rb5 h5 62.gh5 Nh5 63.Kg4 1–0. stefanW – 488, ChessWorld.net, 2012.

3.Nf3 Bb4 4.c3 Bc5 5.Bc4 d6 6.Bd5 (6.d4 ed4 7.cd4 Bb4 8.Nbd2 Nc6=) 6...h6 (6...Nf6!?–/+) 7.0-0 (7.Qb3 Qf6 8.Bb7 Be6=) 7...Bg4 (better is 7...c6!? 8.Bc4 d5 9.ed5 cd5–/+) 8.d4+= ed4 9.cd4 (worse is 9.Bb7 Ra7 10.Bd5 c6+=) 9...Bf3? (better is 9...Bb6 10.Bb7 Ra7=) 10.Qf3+– Nf6 11.dc5 Nd5 12.ed5 0-0 13.Bh6 gh6 14.cd6 Qd6 15.Nc3 Nd7 16.Rae1 Ne5 17.Qe3 Rae8 18.Ne4 Qd5?? 19.Nf6+– (19.Nf6 Kg7 20.Nd5+–) 1–0. interloper – Eries, ChessWorld.net, 2011.

3.h4 Nf6 4.f3 Nc6 5.a3 b5 6.c4 bc4 7.g4 d5 8.ed5 Qd5 9.g5 Nh5 10.f4 Nf4 11.Rh2 e4 12.Nc3 Qd4 13.Nge2 Nd3# 0–1. dunk0104 – wee harv, ChessWorld.net, 2012.

2.Nf3 Nc6

3.a3 b5 4.Bb2 Bb7 5.e3 Nh6 6.Be2 e6 7.0-0 Ne7 8.d4 Bf3 9.Bf3 Rb8 10.Qd3 Nef5 11.g4 Qg5 12.Kh1 Nh4 13.Be2 Bd6 14.Rg1 0-0 15.f4 Qd5 16.e4 Qc6 17.d5 ed5 18.ed5 Qb7 19.Qd4 f6 20.g5 c5 21.dc6 Qc6 22.Bf3 Qf3 23.Rg2 Qg2 0–1. Adjailton (1900) – LaverGota (1720), lichess.org, 2019.

3.a3 d5 4.d4 (4.Bb2 Bg4=) 4...Bg4 (4...Nf6 5.e3=) 5.Nbd2 e6 6.e3 Nf6 7.c4 (7.Be2 Bd6=) 7...Be7 8.h3 Bf5 9.Be2 (9.cd5 ed5 (< 9...Nd5 10.e4+/–) 10.Be2 0-0=) 9...dc4 10.Bc4 (10.Nc4 Ne4=) 10...0-0 (10...b5 11.Be2=) 11.Bb2 (11.Nh4 b5 12.Nf5 ef5+=) 11...b5 12.Be2 Qd5 13.Rc1 (13.Ne5 Ne5 (13...Qg2? 14.Bf3 Ne5 15.Bg2 Nd3 16.Ke2 Nb2 17.Qb3+–) 14.de5 Ne4 (14...Qg2? 15.Bf3 Qg6 16.Ba8 Ra8 17.ef6 Bf6 18.Bf6 Qf6 19.Rc1+–) 15.Ne4 Be4= (< 15...Qe4 16.Bf3 Qh4 17.Ba8 Ra8 18.Qd7+/–)) 13...Rfc8 (13...Rfd8 14.Ne5 Ne5 15.de5=) 14.Nh4 Be4 15.0-0 Qa2 (better is 15...Nd8!?=) 16.Ne4+/– Ne4 17.Bf3 Nd6 (17...f5 18.Be4 fe4 19.Rc6 Qb2 20.Qg4+/–) 18.Bc6 (18.Rc2!? Nb4 19.ab4 Bh4+/–) 18...Qb2+/– 19.Ba8 Ra8 20.Qd3 (20.Nf3 Nc4+/–) 20...Nc4+= (20...Bh4?? 21.Rc2 (21.Rc7?! Qa2=) 21...Qc2 22.Qc2+–) 21.Nf3 Qa3 22.Qa3 (22.Qe4 Rb8 23.Ra1 Qb4 24.Ra6 Bf8+/–) 22...Na3+= 23.Rc7 Bb4 24.Ng5 (24.Ne5 f6 25.Nd3 Bd6+=) 24...Rf8 25.Rfc1 Nc4 (25...a5 26.Rb7 h6 27.Nf3+/–) 26.Kf1 a5 27.Ke2 h6 28.Ne4 Rd8 29.Kd3 Kh7 30.f4 Kg6 (30...Kg8 31.g4+=) 31.g4+/– Nb2 (31...e5 32.f5 Kh7 A) 33.Rf7?! ed4 34.Rb7 A1) 34...Ne3? 35.Rcc7 (35.Rb5?! Nd5+=) 35...Bf8 36.Rb5+–; A2) < 34...de3 35.Ke2+=; A3) 34...Ne5 35.Ke2 d3 36.Kf2 Nc4=; B) 33.R1c4 bc4 34.Kc4 ed4 35.ed4+/–) 32.Ke2 Nc4 33.Rb7 Rd5 34.h4 Ba3 35.Rc2 Bb4 36.h5 Kh7 37.Rf7 Kg8 38.Rb7 Rd8 39.g5 Kf8 40.Kd3 Be7 41.Ra2 hg5 42.Rb5 Nd6 43.Nd6 Bd6 44.fg5 Bb4 45.Rb7 e5 46.h6 gh6 47.gh6 Kg8 48.Rg2 Kh8 49.Rgg7 Bf8 50.Rgd7 (50…Rd7 51.Rd7 Bh6 52.de5+–) 1–0. Kusmierek,Jozef – Wochnik,Manfred, corr 3GMM½–01, 1999.

3.a3 d6 4.Nc3 e5 5.d4 ed4 6.Nd4 Be7 7.Nc6 bc6 8.e4 Bf6 9.Bb2 Be6 10.Be2 Ne7. pierre (2140) – vpatil, internet, 2010.

3.a3 e5 4.e4=.

3.a3 e6 4.Nc3 (4.g3 Nf6=) 4...d5 5.g3 (5.d4 Nf6=) 5...Nf6 (5...d4 6.Na4+=) 6.d4 Bd6 (6...Ne4 7.Bb2=) 7.Bg2 0-0 (7...Ne4 8.Ne4 de4 9.Nd2=) 8.0-0 Bd7 (8...Ne4 9.Ne4 de4 10.Ng5=) 9.Qd3+= Qe7 (9...h6 10.Bd2+=) 10.Bd2 Ra7 (10...h6 11.Rfe1+=) 11.Rfe1 Rfa8 (11...h6 12.e4 Ne4 13.Ne4 de4 14.Re4+/–) 12.e4+/– de4 13.Ne4 Ne4 14.Re4 a5 (better is 14...Qf6!?+/–) 15.b5+– Nd8 16.c4 c6 (16...Qe8 17.Ne5+–) 17.Rh4 (17.c5 Bb8+–) 17...h6 (17...f5 18.c5 Bb8 19.b6+–) 18.b6 (18.c5 Bb8 19.b6 Ra6+–) 18...Ra6 19.c5 Bb8 20.Bf1 f5 21.Qc2 Nf7 22.Re1 e5 (22...a4+–) 23.de5 Ne5 (23...Be6+–) 24.Ne5 Be5 25.Bc3 Re8 (25...Qc5 26.Re5 Qf8 27.Rd4+–) 26.Re5 Qe5 27.Be5 Re5 28.Ba6 ba6 29.Rd4 Be6 30.b7 Rd5 31.Rd5 Bd5 (31...cd5 32.b8Q Kh7 33.Qe8 a4 34.Qe6 h5 35.Qcf5 g6 36.Qfg6 Kh8 37.Qe5) 32.b8Q Kh7 33.Qf5 (33.Qf5 g6 34.Qd7 Bf7 35.Qf7) 1–0. pierre – pelo, internet, 2010.

3.a3 Nf6 4.Bb2 d5 5.e3 Bg4 6.h3 Bf5 7.Be2 Qd6 8.0-0 e5 9.d4 ed4 10.Nd4 Bg6 11.Nd2 Nd4 12.Bd4 0-0-0 (12...Be7 13.Nf3=) 13.Rc1 Be7 14.c4 Ne4 (14...dc4 15.Bc4 b5 16.Ba2+–) 15.cd5 Kb8 (15...Qd5 16.Bg4 Kb8 17.Ne4 Be4 18.f3+–) 16.Bf3 Ng5 17.e4 Qf4 18.Rc4 (18.Bg7 Rhg8 19.Bd4 Nh3 20.Kh1 Qh6–/+) 18...b5 19.Be3 Qe5 20.Rc6 Nf3 (20...Ne4 21.Ne4 Be4 22.Qe2+–) 21.gf3 (21.Nf3?! Qe4 22.Qc1 Bd6+–) 21...Rd6 22.Qc1 (22.Qc1 Rc6 23.Qc6+– (23.dc6?! Rd8+=)) 1–0. Pech,Jaroslav – Leclerc,Sophie, FICGS, 2008.

3.a3 h6 4.e4= e5 5.Bb2 d6 6.d4 Bg4 (6...ed4 7.Nd4 Qg5 8.Nc3+=) 7.Be2 (7.d5!? Nce7 8.Nc3+/–) 7...Bf3+= 8.Bf3 Nf6 (8...Nd4 9.Bd4 ed4 10.Qd4+=) 9.c3 b5 (9...ed4!? 10.cd4 Be7+/–) 10.0-0+– ed4? (better is 10...Be7+–) 11.cd4 d5 (11...Ne7 12.Re1 c6 13.Nc3+–) 12.e5 (better is 12.Nc3!? Ne7+–) 12...Ne4 13.Be4 Be7 (13...de4 14.d5 Ne7+–) 14.Bf3 a5 (14...Na7 15.Nc3 c6 16.Ne2+–) 15.Qb3 a4 16.Qd5 Qd7 (16...Qd5 17.Bd5 Ra6+–) 17.Qc6 Rd8 18.Nc3 0-0 19.Nb5 f6 20.Nc7 (20.Qc4 Kh8 21.e6 Qe8+–) 20...Qf5 21.Qe6 Qe6 22.Ne6 fe5 23.Nd8 Bd8 24.Bd5 Kh8 25.de5 Bb6 26.e6 Rf5 27.Rad1 Bd8 28.Bc6 Bc7 29.e7 Rh5 30.e8Q Kh7 31.Be4 (31.Be4 Rf5 32.Bf5 g6 33.Qg6) 1–0. Tiedemann,Joern (2125) – Witt,Monika (1605), remoteschach.de, 2007.

3.c3 d5 4.Nd4 b5 5.Nc6 Qd6 6.Na5 e6 7.Nb3 Nf6 8.e3 Bb7 9.d4 Be7 10.Be2 0-0 11.Nc5 Bc6 12.f4 Ne4 13.0-0 a5 14.Bd3 f5 15.a4 ab4 16.cb4 Bf6 17.Qh5 Be8 18.Qe2 Bc6 19.Rf3 ba4 20.Rh3 Be7 21.Qh5 Nf6 22.Qh4 Be8 23.Nd2 Bg6 24.Nf3 Ng4 25.Ng5 Nh6 26.Nce6 Rfe8 27.Ba3 Qe6 28.Ne6 Bh4 29.Nc7 Bf6 30.Na8 Ra8 31.Be2 Be8 32.b5 Rb8 33.Rb1 Nf7 34.b6 Nd8 35.Bd3 Bd7 36.Bd6 Rb7 37.Bb5 Rb6 38.Bc7 Rb5 39.Rb5 Bb5 40.Be5 Be7 41.Rf3 Bc4 42.Rf2 a3 43.Rf1 Nc6 44.Ra1 Na5 45.h3 a2 46.Bc7 Nc6 47.g4 Ba3 48.Kf2 Bb2 49.gf5 Ba1 50.Kg3 Bc3 51.Be5 a1Q 52.f6 Qg1 53.Kh4 Be1 54.Kh5 Qg6 White king mated 0–1. Atticus Philipus Platypus – Crusader Rabbit (1605), ChessWorld.net, 2007. (=1.Nf3 Nc6 2.b4 a6)

3.d4 d5 4.c3 a5 (4...Nf6 5.Bf4=) 5.b5 Na7 6.e4 de4 7.Ne5 Be6 8.Be2. Kalapos,Karol (1720) – Mathakiya,Azaz, FICGS, 2013.

3.d4 Nf6 4.a3 b6 5.d5 Na7 6.c4 Bb7 7.Nc3 g6 8.e4+/– Bg7 9.e5 Ng4 10.Qd4 0-0?? 11.Qg4 +–. miehnekort – kashee_dashing, Yahoo, 2005.

2.Nf3 d6

3.d4 b5 4.a4+= ba4 5.e3 Bd7 6.Bd3 Bb5 7.Nc3 c6 8.0-0 g6 9.Na4 Ba4 10.Ra4 Bg7 11.b5! cb5 12.Bb5! Nd7 13.Bc6 Ngf6 14.Ba8+– Qa8 15.Qd3 0-0 16.Bd2 e5 17.Qa6 Qe4?? 18.de5 Ne5 19.Re4 Ne4 20.Bb4 Nf3 21.gf3 Ng5 22.Kg2 h5 23.Bd6 Re8 24.Qb5 Re6 25.Qb8 Kh7 26.h4 1–0. pierre – dorin gipsi 66, internet, 2011.

3.d4 Nf6 4.Bb2 Bg4 5.c4 Nc6 6.d5+= Bf3 7.ef3 Ne5 8.f4 Ned7 9.Bd3 e6 10.de6+/– fe6 11.0-0 Be7 12.Re1 Kf7 13.Nd2 Re8 14.Nf3 h6 15.Qc2 Nf8 16.Bd4 b6 17.b5 ab5 18.cb5 Nd5 19.Bc4+– Bf6 20.f5 Bd4 21.Nd4 Nb4 22.fe6 Ne6 23.Be6 Re6 24.Qb3 d5 25.Ne6 Qe7 26.Qc3 Kg8 27.Nc7 Rc8 1–0. MT – guest576, ICC, 2004.

3.d4 h6 4.Nc3 e6 5.e4 f6 6.d5 e5 7.Nh4 h5 8.Be2+– c6 9.Ng6 Rh6? 10.Bh5 Ne7 11.Bh6 gh6 12.Ne5 Ng6 13.Bg6 Ke7 14.dc6 bc6 15.Nc6 Nc6 16.Nd5 Ke6 17.Qg4 Ke5 18.Qg3 Kd4 19.Qc3# 1–0. wiking – faelgalodoido, internet, 2009.

3.d4 h6 4.Nc3 Nf6 5.e4 Bg4 6.Be2 Bf3 (6...e6 7.d5+=) 7.Bf3+/– (worse is 7.gf3 g6=) 7...e6 8.0-0 Be7 9.e5 de5 10.de5 (worse is 10.Bb7 Ra7 11.de5 Rb7 12.ef6 Bf6+=) 10...Qd1 11.Rd1 Nd5 (11...Bb4!? 12.ef6 Bc3+=) 12.Bd5+– ed5 13.Nd5 Kd8?? (better is 13...Bd8+–) 14.Nb6 Ke8 (14...Nd7 15.Rd7 Ke8 16.Rc7+– (16.Na8?! Kd7 17.Nc7 Kc7+–)) 15.Na8 Bd8 16.Rd2 c6 17.Bb2 Ke7 18.Rad1 Re8 19.Bd4 Nd7 20.Be3 Ne5 21.Bc5 Ke6 22.Rd8 Rd8 23.Rd8 Nc4 24.Nb6 Nb6 25.Bb6 1–0. pierre – ojohn, internet, 2010.

2.Nf3 e6

3.a3 d5 4.Bb2 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.a3 a6).

3.a3 d5 4.Bb2 Nf6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 a6 5.Nf3).

3.Bb2 f6 4.a3 b5 5.e3 c5 6.bc5 Bc5 7.d4 Bb6 8.Nbd2 d5 9.Be2 Nc6 10.0-0 Nge7 11.Rc1 0-0 12.e4 h6 13.c3 Bb7 14.a4 b4 15.cb4 Nb4 16.ed5 Nbd5 17.Nc4 Nf5 18.Nb6 Qb6 19.Re1 Rac8 20.h3 Nf4 21.Bf1 Nd5 22.Ba3 Rfe8 23.Bc5 Qd8 24.Rb1 Bc6 25.Qb3 Qa5 26.Bd3 Rb8 27.Qc2 Rb1 28.Rb1 Ba4 29.Qb2 Qc7 30.Qa3 Bb5 31.Bb5 ab5 32.Rb5 Rb8 33.Rb8 Qb8 34.g4 Qb1 35.Kg2 Qe4 36.Qc1 Nf4 37.Kf1 Qf3 38.Qe3 Ne3 0–1. ursus11 – tiki, kurnik, 2012. (=1.Nf3 a6 2.b4)

3.c3 g6 4.d4 (4.e4 a5 5.b5 d5+/–) 4...Bg7 (4...d5 5.e3=) 5.e4+= Ne7 6.Bd3 b6 7.0-0 d6 (7...0-0 8.a4+=) 8.Bg5 c5 9.bc5 bc5 10.dc5 dc5 11.Qa4 (11.Qe2 Bb7+=) 11...Bd7+= 12.Qa3 0-0 (12...Bc6!? 13.Rd1 h6+=) 13.Qc5+/– Nbc6 14.Nbd2 f6 15.Be3 Rf7 (15...f5 16.Rab1+/–) 16.Rab1+– Bf8 17.Qb6 Qe8 18.Nc4 Nc8 19.Qc7 e5 (19...N6a7 20.Qg3+–) 20.Qb7 N8a7 21.Nb6 Be6?? (21...Rb8 22.Qa6 Be6+–) 22.Qa8 Qa8 23.Na8 Ba3 24.Ba6 Ba2 25.Ra1 Bc4 26.Bc4 Be7 27.Ba7 Na7 28.Ra7 Kf8 29.Nc7 (29.Nc7 Kg7 30.Bf7+–) 1–0. pierre – pobij, internet, 2010.

3.c3 h6 4.e4+= d6 5.d4 Be7 6.Bd3 Nf6 7.0-0 0-0 8.e5 de5 9.de5 Nd5 10.a3 Nc3?? 11.Nc3+– b5 12.Be4 c6 13.Qb3 Nd7 14.Bc6 Rb8 15.Bf4 Bb7 16.Be4 Be4 17.Ne4 Nb6 18.Rfd1 Qc7 19.Nfd2 Rbd8 20.Rac1 Qb7 21.Qg3 Nd5 22.Bh6 g6 23.Bf8 Bf8 24.Nb3 Rc8 25.Rd5! ed5 26.Nf6 Kg7 27.Rc8 Qc8 28.Qh4 Qf5 29.Qh7# 1–0. kamret (2215) – sotos26, GameColony.com, 2003.

3.Nc3 Bb4–/+ 4.Bb2 (4.e4 d6 5.Ne2 Nf6 6.c3 Ba5 7.Qa4 c6 8.Qc2 b5 9.d4 Bb7 10.Bg5 h6 11.Bf6–/+ –1.09) 4...Nc6 (4...Nf6 5.a3 Bc3 6.Bc3–/+ d6 7.Bf6 Qf6 8.e3 e5 9.d4 0-0 10.Rb1 Re8 11.de5–/+ –1.06) 5.e3 (5.Nd5 Bf8 (5...ed5? 6.Bg7 Nf6 7.Bh8+–) 6.Nf4 d6–/+ (6...Nf6 7.e3 d6 8.d4 d5 9.Bd3 Bb4 10.c3 Bd6 11.0-0–/+ –0.97) 7.d4 d5 8.e3 Bb4 9.c3 Bd6 10.Bd3 Nf6 11.0-0–/+ –0.97; 5.e4 Nf6 6.e5 Bc3 7.Bc3 Nd5 8.Bb2 0-0 9.c4 Nf4 10.d4 f6 11.g3+= –0.59; 5.a3 Be7 6.e4 Nf6 7.d4 d5 8.e5 Nd7 9.Bd3 0-0 10.Qe2 b5 11.0-0–/+ –0.87) 5...Nf6 6.Bd3 (6.a3 Be7 7.Be2 0-0 8.d3 d5 9.0-0 Re8 10.Na2 Bd6 11.Qd2–/+ –1.31) 6...0-0 7.0-0 (7.a3 Be7 8.0-0 d6 9.Ne4 Ne4 10.Be4 d5 11.Bd3–/+ –1.12) 7...h6 (7...d5 8.a3 (8.Ne2–/+ Bd6 9.Ned4 Nb4 10.Be2 c5 11.Nb3–/+ –1.34) 8...Bd6 9.Re1 e5 10.e4 d4 11.Nd5–/+ –1.31) 8.a3 (8.Ne4 Ne4 9.Be4 d5 10.Bd3 Bd6 11.e4–/+ –1.03) 8...Bd6 (8...Be7 9.e4 e5 10.Nd5 d6 11.Qe2–/+ –0.87) 9.Ne4 (9.Ne2 b5 10.a4 ba4 11.Ra4–/+ –0.84) 9...Be7 10.Rb1 (10.Re1 d6 (10...Ne4 11.Be4 d5–/+) 11.Qb1–/+ –0.84; 10.Ra2 Ne4 11.Be4–/+ –1.09) 10...d5 (10...Ne4 11.Be4 d5 12.Bd3–/+) 11.Ng3 Ng4 12.h3 Nf6–/+ 13.Ne5 Ne5–+ 14.Be5 Bd6 15.Bb2 e5 16.Nf5 e4 17.Nd6 ed3 18.Nc8 dc2 19.Qc2 Rc8 20.Bd4 b6+= 21.Rfc1 c5–/+ 22.Ba1 a5 23.a4 Ne4 24.Qb2= Nf6 25.Qb6+/– Qb6 26.Rb6 c4 27.Bd4 Ne4+= 28.Rc2 Rb8= 29.f3 Ng3 30.Kf2 Nh1 31.Kg1 Ng3+= 32.Rcb2 Ne2 33.Kf1+/– (33.Kf1 Rb6 34.Bb6+/–) 1–0. silver lining – Thunderbird89, internet, 2010.

3.g3 Bb4 4.Bb2 Nf6 5.Bg2 d5 6.0-0 Nc6 7.c3 Be7 8.d4 Ne4 9.a4 Na5 10.h4 0-0 11.Ne5 Bh4 12.Be4 de4 13.Qc2 f5 14.Kg2 Bf6 15.Rh1 Be5 16.de5 b6 17.c4 Bb7 18.e3 Qg5 19.Rh4 Rfd8 20.Nd2 Rd3 21.Rah1 h6 22.Rh5 Qg4 23.R1h4 Rd2 24.Qd2 Qf3 25.Kg1 Nb3 26.Qd7 Bc8 27.Qd8 Kh7 28.Rh6 gh6 29.Qe7 1–0. vallejos – varin123, kurnik, 2012.

2.Nf3 Nf6

3.Bb2 b5 4.a3 Bb7 5.g3 e6 6.Bg2 Qc8 (6...c5 7.c3=) 7.d3 Be7 8.Nbd2 c5 9.0-0 cb4 10.ab4 0-0 11.c4 (11.c3 Nc6+=) 11...Bb4= 12.cb5 Be7? (12...ab5 13.Ra8 Ba8 14.Qa1 Bd2 15.Qa8=) 13.ba6 (better 13.b6+–) 13...Na6+= 14.Nc4 Nd5 (better 14...Qc7!?+=) 15.e4+– Nf6 (better 15...Ndb4!? 16.Nb6 Qc2 17.Na8 Qb2+–) 16.Nb6+– Qc6 17.Na8 Ba8 18.Qa4 (better 18.Ne5 Qb7 19.Qe2+–) 18...Qc5?? (better 18...Qa4 19.Ra4 Nc5+–) 19.Qa6 Bc6 (19...Qc6 20.Qa5 Qc2 21.Ba3 Ba3 22.Qa3+–) 20.Bd4 (20.Ba3!? Bb5 21.Bc5 Ba6 22.Be7 Bd3 23.Bf8 Kf8+–) 20...Qh5 (20...Qb5 21.Ne5+–) 21.Ra5 Ra8 (21...Nd5 22.ed5 Bd5+–) 22.Rh5 (better 22.Qa8 Ba8 23.Rh5 Nh5 24.Rb1+–) 22...Ra6 23.Bf6 Bf6 24.Rc5 g6 25.d4 (25.Rb1 Ra3 26.e5 Be7+–) 25...Be7 (25...d6 26.Rc4 Be4 27.Re1+–) 26.Rcc1 Be4 27.Ra1 (27.Rc7 Rd6+–) 27...Rb6 (27...Rd6 28.Ra7+–) 28.Ne5 Bg2 29.Kg2 Rd6 (29...d6 30.Nf3+–) 30.Rfc1 (30.Ra7 Bf6+–) 30...Rd4 31.Rc8 Kg7 32.Ra7 Bc5 (32...Rd5 33.Rd7 Rd7 34.Nd7 g5+–) 33.Nd7 (better 33.Rc5 h5 34.h4+–) 33...Ba7= 34.Rc7 Ra4 35.Ne5 Ra2 36.Rf7 Kh6?? (36...Kg8 37.Rd7=) 37.h4?? (37.Ng4 Kh5 38.Nf6 Kh6 39.Ng8 (39.Nh7?! Bf2 40.Rf2 Rf2 41.Kf2 Kh7=) 39...Kh5 40.Kh3+–) 37...g5= 38.hg5 Kg5 39.Nd3 h6 40.Kf3 Ra3 41.Ke4 Ra4 42.Ke5 Ra6?? (42...Kg4 43.Ke6 Ra6 44.Ke5 Ra5 45.Ke4 Ra4 46.Kd5 Ra5 47.Kc4 Bf2 48.Nf2 Kg3 49.Ne4 Kg4 50.Rg7 Kf3 51.Kb4=) 43.f4 (43.Rg7 Kh5 44.Nf4) 43...Kg4= 44.Rg7 Kf3 45.Nb4 Ra5 46.Ke6 Bd4 47.Rg6 Bc5?? (47...Rc5 48.Ke7=) 48.Nd5?? (better 48.Nc6 Ra3 49.f5+–) 48...Ke4 (48...Ra6 49.Kf5 Rg6 50.Kg6 Kg3 51.f5=) 49.f5 (49.Nf6!? Kf3 50.f5 Ra6 51.Kd5+=) 49...Ra6= 50.Kf7 Rg6?? (better 50...Ra7 51.Ke6 Ra6 52.Kd7 Ra7 53.Kc6 Kf5 54.Rf6 Kg5 55.Kc5 Ra5 56.Kd4 Rd5 57.Kd5 Kf6=) 51.fg6+– (51.Kg6?! Kd5 52.f6 Ke6=) 51...Kd5 52.g7 Bf2 (52...Be3 53.g4+–) 53.g4 Be3 54.g8Q Bg5 55.Kg6 Ke4 56.Qe6 Kf3 (56...Kd4 57.Kf5 Bd2 58.Qd6 Ke3 59.Qh6 Kd3 60.Qd6 Ke3 61.g5+–) 57.Qf5 (57.Qf5 Kg3 58.Qe4+–) 1–0. ProbablyGareth (1780) – Amun (1835), lichess.org, 2018. (=1.Nf3 a6 2.b4 Nf6)

3.d4 e6 4.a3 d5 5.Bg5 Be7 6.e3 0-0 (6...h6 7.Bf4=) 7.Bd3 h6 8.Bf4 Nbd7 9.Ne5 Ne5 10.de5 Ne4 11.Be4 de4 12.Nc3 (12.Qg4 f5 13.Qg6 Qe8 14.Qe8 Re8=) 12...f5 13.Qe2 c5 14.Rd1 Qc7 15.Na2 b6 16.0-0 Bb7 17.c3 Rad8 18.a4 g5 19.Bg3 Kh7 20.Rd8 Bd8 21.Qd2 h5 22.h3= Rf7 23.Rd1 Bd5 24.bc5 Ba2 25.cb6 Qb6–/+ 26.Qa2 h4? 27.Rd6+– Qc7 28.Qe6 hg3 29.Qg6 Kh8 30.fg3 Bf6 31.Rf6 Rf6 32.ef6 Qh7 33.Qe8 1–0. market (2260) – Cerati (2095), GameColony.com, 2002.

2.Nf3 h6

3.e4 Nc6 4.b5 ab5 5.Bb5 Na7 6.Bd3+= d6 7.0-0 e6 8.Na3 Nf6 9.Bb2 Be7 10.Nc4 0-0 11.e5 Nd5 12.Qe1 Nc6 13.Qe4 f5 14.ef6 Nf6 15.Bf6 Bf6 16.c3 d5 17.Qh7+= Kf7 18.Qg6 Ke7 19.Ne3 Qe8 20.Qg3 Qd8 21.Rfe1 Qd6?? 22.Nf5+– (22…Kd7 23.Nd6 cd6 24.a4+–) 1–0. wiking – habqad, internet, 2010.

3.e4 Nc6 4.b5 ab5 5.Bb5 Nb4 6.Ba3 e6 7.0-0 c6 8.c3 Nd3? (Better is 8...Nc2! 9.Qc2 Ba3 10.Na3 Ra3+=) 9.Bf8+– (9.Bd3?! Ba3 10.Na3 Ra3+=) 9...Kf8? (Better is 9...Nb2 10.Qb3 Kf8 11.Qb2 cb5+–) 10.Bd3 Nf6 11.e5 Ng4 12.h3 Nf2 (12...h5+–) 13.Rf2 Qb6 (13...d5 14.ed6 Qd6 15.Bc2+–) 14.Nd4 (14.Nh4 Ke8 15.Qf3 Rf8+–) 14...Qb2 (14...Qc5 15.Bg6 f6 16.ef6+–) 15.Qh5 Qa1 (15...f5 16.Bf5 Ke7+–) 16.Qf7 1–0. b4_player (2135) – chale68, GameColony.com, 2002.

3.e4 d5 4.e5 d4 5.Bb2 Bg4 6.h3 Bf3 7.Qf3 Nc6 8.b5 Ne5+= 9.Qb7 e6 10.Bd4!+– Bd6 11.Nc3 Nf6 12.Ne4 0-0 13.ba6 Nc4?? 14.Nf6 gf6 15.Bc4 c5 16.Be3 Qa5 17.Bh6 Rfb8 18.Qc6 Rb6 19.Qa8 Bb8 20.Bf4 (20...Qb4 21.a7 Qc4 22.ab8Q Rb8 23.Qb8 Kh7 24.Be3 Qc2 25.Qf8+–) 1–0. Fritz 8 – NN, 2006.

3.e4 e6 4.a3 Nc6 5.d4 d5 6.e5 Nge7 7.Bd3 g5 8.c3+/– g4 9.Nfd2 Rg8 10.Nb3 b6 11.0-0 h5 12.Bh7 Rh8 13.Qc2 Bg7 14.Bg5+/– Kd7 15.a4 Bb7 16.b5 ab5 17.ab5 (17...Na7 18.Na3+/–) 1–0. miehnekort – tuttledonald, Yahoo, 2005.

3.e4 e6 4.a3 d5 5.e5 Ne7 6.d4 b5 (6...a5 7.b5+=) 7.Bd3+/– Bb7 8.0-0 Nd7 9.Nbd2 g5 10.Nb3 Bg7 11.a4 ba4 12.Ra4 0-0 13.Na5 Bc8 14.Qe2 Nb6 15.Ra3 Bd7 16.Ba6 Nc4 17.Bc4 dc4 18.Qc4 Qc8 19.Qc5 Nd5 20.c4 c6?? 21.cd5 1–0. b4_player (2185) – bryner, GameColony.com, 2003.

3.e4 e6 4.a3 d6 5.d4 Bd7 6.Bd3 Be7 7.0-0 c6 8.Bd2 f6 (8...c5!?–/+) 9.Nh4 g5? (9...h5+–) 10.Qh5 Kf8 11.Ng6 (11...Kg7 12.Nh8 Kh8 13.c4+–) 1–0. wesolyPolak (1800) – NN, GameColony.com, 2002.

1...Na6

2.a3 b6 3.e3 c5 4.b5 Nc7 5.c4 Ne6 (5...d5 6.cd5 Nf6 7.d4=) 6.Qf3 Rb8 7.Bb2 f6 (7...Nf6 8.Qd1=) 8.Qh5 (8.Bd3 Nh6+=) 8...g6 9.Qg4 (better 9.Qd1+=) 9...f5?? (9...Bg7 10.Qg3 Bb7 11.Nf3+=) 10.Qd1 (better 10.Qg3!? f4 11.ef4+–) 10...Bg7 11.Nc3 (11.Bg7 Ng7 12.Nf3 a6+=) 11.b4 Nh6 12.Nf3 Rf8 Black plans f4 (12...0-0 13.Be2+=) 13.Be2 f4 14.0-0 Rg8 (14...Bb7 15.Qc2+=) 15.h3 (15.Re1 Bb7+–) 15...Bb7 16.Qc2 Bf3 (16...Nf7 17.Nd5+–) 17.Bf3 (17.gf3?! Nf5=) 17...Bc3 (17...Ng5 18.Bd5 e6 19.ef4 Nh3 20.gh3 ed5 21.Nd5+–) 18.Bc3 (18.Qc3 fe3 19.fe3 Ng5+–) 18...Ng5+– 19.Be2 (19.Qd1+–) 19...Nf5 (19...f3!? 20.Bf3 Nf3 21.gf3 d5+–) 20.ef4+– Ne6 21.g3 Ned4 22.Qe4 d5 23.cd5 Ne2 (23...Nd6 24.Qe3 N6b5 25.Bb5 Nb5 26.Qe6+–) 24.Qe2 Nd4? (24...Qd5 25.Rfe1+–) 25.Qe4 (better 25.Bd4 cd4 26.Qe6+–) 25...Nb5+– 26.Be5 Rc8 27.Rfe1 Nd6 28.Bd6 Qd6 29.Qa4 Kd8? (better 29...Kf7+–) 30.Qa7+– Rc7 31.Qa8 Rc8 32.Qb7 Rc7 33.Qa6 Ke8 (33...Rf8 34.Re6 Qd5 35.Qb6+–) 34.Re5 (34.Rab1!? Qd5 35.Qb6 Qd7+–) 34...Kf7 35.Rae1 Re8 (35...Rb8 36.f5 c4 37.fg6 hg6 38.Rg5+–) 36.Qc4 Rb7 37.Re6 Qd7 (37...Qb8+–) 38.d6 b5 (38...Kf8 39.Re7 Qe7 40.de7 Rbe7 41.Re7 Re7+–) 39.Re7 Kf8 40.Qf7 1–0. GuestPLHL – GuestRDTD, freechess.org, 2018.

2.a3 Rb8 3.Bb2 Nh6 4.e3 Rg8 (4...d6 5.Nf3+=) 5.c4 b5?? (better 5...c5+–) 6.cb5+– d5 (6...Nb4 7.ab4 Rb7 8.Qc2+–) 7.ba6 Rb6 (7...e6 8.Qc2+–) 8.Nc3 (better 8.Bd4 Rd6+–) 8...Rc6 (8...e5+–) 9.Bb5 Bd7 10.Bc6 Bc6 11.Nge2 Ba4 (11...e5 12.d4 Bd6+–) 12.Qa4 c6 13.Nd4 (13.Qc6 Qd7 14.Qa8 Qd8 15.Qa7 e6+–) 13...g5 14.Nc6 Qc8 15.Ne5 (better 15.Na7 Qd7 16.Nc6 f6+–) 15...Kd8 16.Nd5 Bg7 17.Rc1 (17.Nc6 Ke8 18.Bg7 Rg7 19.Nce7 Qd7 20.Nf6 Ke7 21.Qd7 Kf6 22.Qa7+–) 17...Qe6 18.Nc6 (18.Qa5 Qb6 19.Nb6 ab6 20.Qb6 Ke8 21.Rc8) 18...Ke8 (18...Qc6 19.Qc6 Bc3 20.Qc7 Ke8 21.Qe7) 19.Nc7 (19.Bg7 f5 20.Ne5 Kd8 21.Qa5 Qb6 22.Nb6 ab6 23.Qb6 Ke8 24.Rc8) 19...Kf8+– 20.Ne6 fe6 21.Bg7 Rg7 22.Ne5 g4 (22...Rg8 23.Qe8! Kg7 24.Qe7 Kh8 25.Qf6 Rg7 26.Rc8 Ng8 27.Nf7) 23.Rc8 1–0. Williams,Barry – Blackman,Daniel, Wanganui Chess Club Summer Handicap NZL, 2000.

2.a3 d6 3.e4+= d5 4.ed5 Bf5 (better is 4...Qd5!? 5.Nc3 Qe6 6.Qe2 Qd6+=) 5.Bb5+/– c6? (better is 5...Bd7 6.Qe2 Nb8+/–) 6.dc6+– bc6 (6...Nc7 7.cb7 Nb5 8.ba8R Qa8 9.Kf1+–) 7.Ba6 (7...Qd5 8.Nf3+–) 1–0. Wall,Bill – Sumi, internet, 2002.

2.b5 Nb4 (--> 1.b4 Nc6 2.b5 Nb4?).

2.b5 c6?? 3.ba6+– ba6 4.e4 (4.Nc3 Rb8+–) 4...Rb8 (4...d5 5.ed5 cd5 6.Nf3+–) 5.d4 (5.Nc3 Nf6+–) 5...c5 6.c3 a5 7.Nf3 cd4 8.cd4 Rb4 9.Be3 e5 10.Ne5 Bd6 11.Be2 f6 12.Nd3 Rb8 13.0-0 f5 14.ef5 g6 15.Nc3 gf5 16.Bh5 Ke7 17.Bg5 Ke6 18.Qe2 Be5 19.Qe5# 1–0. einaar (2175) – rvollaerts, net–chess.com, 2007.

2.c3 c6 3.e4 e5 (3...Nf6 4.e5 Nd5 5.Nf3=) 4.Nf3 Bd6 (4...Nf6 5.Ba6 ba6 6.0-0=) 5.Bc4 b5 6.Bb3 Qb6 (better is 6...Nf6!?+=) 7.0-0+/– Nf6 8.d3 (8.d4 Qb8 9.Ng5 ed4 10.f4+–) 8...Ng4? (better is 8...0-0+/–) 9.Ng5+– h5?? (9...Nh6 10.Be3 Qc7+–) 10.Nf7 Rf8 11.Nd6 Kd8 12.Nf5 g6 13.Nd6 Qc7 14.h3 Nf6 15.Nc8 Qc8 16.Bg5 Ke7 17.d4 ed4 18.Qd4 Nc7 19.e5 Ne6 20.Qe3 Ng5 21.ef6 Kf6 22.Nd2 Re8 23.Qf4 Kg7 24.Qg5 Rf8 25.Bc2 Rf6 26.Ne4 Re6 27.Rfe1 Qf8 28.Rad1 d5 29.Nc5 Rf6 30.Re6 Qc8 31.Rf6 Qe8 32.Ne6 Kh7 33.Bg6 Qg6 34.Qg6 Kh8 35.Qg7# 1–0. 488 – kiwi phill, ChessWorld.net, 2012.

2.c3 d5 3.e3 c6 4.d4 Nf6 5.Nf3 Ne4 (5...Qb6 6.a4+=) 6.Bd3 e6 7.Be4 (7.0-0!?+=) 7...de4= 8.Ne5 f6?? (better is 8...Qg5 9.0-0 f6=) 9.Qh5+– Ke7 10.Ng6! hg6 11.Qh8 e5 12.Qh7 Bf5 13.0-0 Qe8 14.Nd2 Kd8 15.Nc4 b6? 16.Nd6?? Qd7?? 17.Nc4?? g5?? 18.Qg8 Kc7 19.Rb1?? Be6–/+ 20.Ne5 fe5 21.Qh7=+ Qd5 22.Rb2 Nb8 23.Qg6 Nd7 24.Qg5 ed4 25.Qd5 Bd5 26.ed4 Be7 27.Bf4 Bd6 28.Bg5 Rh8 29.g3 Nf6 30.Re1 Ng4 31.Kg2?? e3–+ 32.Kf1 Bf3 33.fe3 Nh2–+ 34.Kf2 Rh3 35.e4? Bg3 36.Ke3 Be1 37.Kf4?? Bh5 38.b5 Rf3 39.Ke5 Kd7 40.bc6–+ Kc7 41.d5 Bc3 42.Ke6 Bb2 43.d6 Kc6 44.d7 Rd3 45.Be7 Rd7 46.a4 Bf6! 47.Kf5 Re7 48.Kf4 Bg6 49.Ke3 Re4 50.Kd3 Rd4 51.Kc3 Rd3 52.Kc4 a6 53.Kb4 Bf7 54.a5 Be7 55.Ka4 Ra3 (55...b5) 0–1. poyntman – sirius1259, internet, 2007.

2.c3 e5 3.Bb2 Qe7 4.e3 Qf6 5.Nf3 d6 6.a3 Qg6 7.d4 e4= 8.Nfd2 d5 9.c4+= Qe6? 10.cd5+– Qd5 11.Bc4 Qf5 12.0-0 Nh6? 13.Nc3+– b6?? 14.Nde4 Bb7 15.Ng3 Qe6?? 16.Be6 fe6 17.Nce4 Nf7 18.Rc1 Be7 19.Qg4 Bc8 20.Qg7 Rf8 21.Nf6 Kd8 22.Nh7 Ke8 23.Nf8 Bf8 24.Qg8 Bd7 25.Ne4 Ke7 26.d5! e5 27.Qh7 Re8 28.Be5 c6 29.Bf6# 1–0. Fournier,Frederic (1810) – Jucacu, Active, 2011.

2.e4 e6 3.Nf3 c6 4.c3 Bb4? 5.cb4+– Nb4 6.Ba3 a5 7.Bc4 Nf6 8.Qa4?? b5–/+ 9.Qb3? Ne4?? 10.Be2+= Qf6 11.d3?? Nc5–+ 12.Qb2 Nbd3 13.Bd3 Nd3 14.Kd2 Nb2 15.Kc2 Nc4 16.Bc5 Qb2 17.Kd3 Qa1 18.Bd4 Qa2 19.Bg7 Qb3 20.Nc3 Rg8 21.Bh6 b4 22.Ng5 Qc3 23.Ke4 d5 24.Kf4 e5 0–1. bouffant – dbuckley, net–chess.com, 2002.

2.a3 b5

3.e3 Nb8 4.Bb5+– c6 (4...c6 5.Be2 a5+–). GuestCNPQ – GuestPVLP, freechess.org, 2017.

3.e3 c6 4.Bb2 Nf6 5.Nf3 h6 6.d4 d5 7.Nbd2 Bf5 8.Ne5 Qd6 (8...e6 9.Bd3+=) 9.Bd3 Bd7 (better is 9...g6!?+/–) 10.0-0 Nc7 11.Nb3 Rc8 (better is 11...Ne6+–) 12.Nc5 Ne6 13.Ncd7 (13.a4!? ba4 14.Bc3 Nc5 15.bc5 Qe6+–) 13...Nd7 14.f4 h5 15.Qe2 a6 16.Rf2 (16.c3 h4+–) 16...Rh6 17.Raf1 Nf6 18.h3 (18.Rf3 Nd7+–) 18...Ne4 (18...g6!?+/–) 19.Be4+– de4 20.g4 (better is 20.f5!? Ng5 21.Rf4+–) 20...f6+= 21.g5 fg5?? (better is 21...Rh7 22.Ng6 Qd5+=) 22.fg5+– Rh8 (22...Rh7 23.g6 Rh8+–) 23.Nf7 Qg3 (23...Qd5 24.c4 Qc4 25.Qc4 bc4 26.Nh8+–) 24.Rg2 Qh3 25.Nh8 Kd7 (25...Rd8 26.Ng6 h4 27.d5 Rd5 28.Be5+–) 26.Ng6 Kc7 27.Nf4 (better is 27.d5 cd5 28.Be5 Kb7+–) 27...Nf4 28.ef4 (28.Rf4 Rd8+–) 28...Qf5 29.Qh5 (29.Re1 Qf4 30.Rf1 Qd6+–) 29...g6 (29...e6 30.Re1 Bd6 31.Qe2 Bf4 32.Qe4+–) 30.Qg4 e6 31.Qf5 ef5 32.Rh2 Bd6 (32...Kd7 33.Kf2 Re8 34.Rh7 Ke6 35.Rh8+–) 33.Rh7 Kb8 34.Rg7 e3 (34...Rf8 35.Rg6 Kc7 36.Rg7 Kb6 37.Kg2+–) 35.Bc1 e2 (35...Re8 36.Kg2 e2 37.Re1+–) 36.Re1 Re8 (36...a5 37.Rg6 Rd8 38.c3+–) 37.Kf2 Re4 (37...Bc7 38.Re2 Rd8 39.Ree7+–) 38.Re2 (38.Re2 Kc8 39.Re4 fe4 40.Rg6+–) 1–0. ecluschei (2600) – acaudron (2295), net–chess.com, 2015.

3.e3 h6 4.Bb5+– Nc5?? (better 4...c5+–) 5.bc5+– c6 (5...c6 6.Qf3 Nf6+–) 0–1. GuestCNPQ – GuestPVLP, freechess.org, 2017.

3.e4 c6 4.c4 f6 (better is 4...bc4!? 5.Bc4 Nc7+=) 5.cb5+/– cb5 6.Bb5 Nb4 7.ab4 a6 8.Bc4 Nh6 (8...Bb7 9.Nc3+–) 9.d4 e6 10.Bh6 gh6 11.Qh5 Ke7 12.Nf3 Bb7 13.Nbd2 Bc6 (13...d5 14.Bd3 Qc7+–) 14.d5 Bd5 (14...Qe8 15.Qe8 Ke8 16.dc6 Bb4 17.cd7 Kd7 18.Ba6+–) 15.ed5 ed5 (15...Qb6 16.de6 de6+–) 16.Qd5 Rb8 17.Qe4 Kd6 18.Ra6 Kc7 19.Ra7 Kc8 (19...Kb6 20.Qd4 Kc6 21.Bd5 Kb5 22.Qc4 Kb6 23.Qa6) 20.Ba6 Rb7 21.Qb7 1–0. b4_player (2240) – EPLAYER01, GameColony.com, 2003.

2.a3 Nb8

3.Bb2 a5 4.b5 c6 5.e3 cb5 6.Bb5 Qb6 7.a4 Nc6 8.Nf3 d6 9.0-0 Bd7 10.c4 Qc7 11.d4 h6 12.Nc3 Na7 13.Nd5 Qc8 14.Nb6 Qb8 15.Nd7 Nb5 16.Nb8 Rb8 17.ab5 a4 18.Ra4 Ra8 19.Ra8 Kd7 20.Rf8 g6 21.d5 Nf6 22.Rh8 Nd5 23.Qd5 e5 24.Qb7 Ke6 25.Qc8 Ke7 26.Re8 Kf6 27.Ne5 de5 28.Be5 Kg5 29.h3 f5 30.Qd8 Kh5 31.g4 fg4 32.hg4 Kg4 33.Qf6 g5 34.Qf3 Kf3 35.Bg7 g4 36.Rf8 Ke2 37.Bh6 g3 38.fg3 Kd3 39.c5 Ke4 40.c6 Ke5 41.c7 Kd6 42.c8Q Kd5 43.Re8 Kd6 44.Rd1 1–0. kaasparov (1605) – lydnils, kurnik, 2012.

3.Bb2 Na6 4.g3 (4.e4!?+=) 4...Nb8 5.Bg2 e6 6.Nf3 d6 7.0-0 Nd7 8.d3 Ngf6 9.Nbd2 g6 10.e3 Bg7 11.c4 0-0 12.d4 a6 13.c5 Re8 14.cd6 cd6 15.Nc4 Nf8 16.a4 Nh5 17.b5 ab5 18.ab5 Ra1 19.Qa1 d5 20.Nce5 Be5 (20...Qb6 21.g4 Nf6 22.Ng5=) 21.Ne5 (21.de5 Qb6+/–) 21...Nd7 22.Rc1+/– Ne5 23.de5 Qb6 24.Bd4 Qb5 25.Rc7 b6 26.Qc1 Ba6+= 27.Rc6 Attacks the isolani on b6 27...Ng7 28.Rb6+= Qc4 29.Bf1?? Qf1 30.Qf1+= Bf1 31.Kf1 Nf5 32.Kg2 Nd4 33.ed4 Ra8 34.Rb4 Ra2 35.h4 Kg7 36.g4 h5 37.gh5 gh5 38.Kg3 Ra3 39.f3 Kg6 40.Kf4 Ra1 41.Rb8 Kg7 42.Rb4 Rg1 43.Ke3 Rh1–/+ 44.f4 Rh4 45.f5 ef5 46.Kf3? Re4–+ 47.Kg3 h4 48.Kh3 Kg6 49.Rb3 Kg5 50.Rg3 hg3 51.Kg3 Rd4 52.Kf3 Re4 53.Kg3 Re5 54.Kf3 Re4 55.Kg3 d4 56.Kf3 d3 57.Kg3 d2 58.Kf3 d1Q 59.Kg3 Qd3 60.Kf2 Re2 61.Kf1 Qd1# 0–1. golfx – milanio, kurnik, 2011. (=1.a3 Na6 2.b4)

3.Bb2 Nf6 4.e3=.

2.a3 c5

3.Bb2 cb4+= 4.e4 e5 (better is 4...ba3!? 5.Ra3 Nc7+=) 5.Ba6+= ba6 6.ab4 Rb8 7.Be5 Qh4?? (better is 7...Rb4 8.d3 d5+=) 8.Bb8+– Bb4 (8...Qe4 9.Ne2+–) 9.Ba7 (9.Qe2!? Bb7 10.c3 Be7+–) 9...Qe4 10.Qe2 Bd2 (10...Qe2 11.Ke2 Ne7+–) 11.Nd2 Bb7 (11...Qe2 12.Ne2 Bb7+–) 12.Ne4 f5 13.Nd6 Kf8 (13...Kd8 14.Bb6) 14.Qe8 1–0. Cavanagh,Philip – adolpholivernipple75, Yahoo! Chess, 2001.

3.b5 Nb8 4.c4 g6 5.Bb2 Nf6 6.e3 Bg7 7.Nf3 0-0 8.d4 cd4 9.Bd4 d6 10.Nbd2 Nbd7 11.Be2 Nc5 12.0-0 b6 13.Qc2 Bb7 14.Rfe1 Qc7 15.Rac1 e5 16.Bb2 Rad8 17.Nb3 Nb3 18.Qb3 Nd7 19.a4 Nc5 20.Qc2 Be4 21.Qd1 f5 22.Nd2 Bb7 23.Bf3 e4 24.Be2 Bb2 0–1. barborski – btmachine7 (1660), kurnik, 2012.

3.c3 d5 4.e3=.

3.c3 e5 4.d3 d5 5.Nf3 Bd6 6.Nbd2 Nf6 7.e3 0-0 8.Be2 b5 9.0-0 Qc7 10.h3 Rd8 (worse is 10...cb4 11.cb4 Be6 12.Bb2+=) 11.d4 e4 12.Ne1 c4 13.f4 (13.a4!? Qb7 14.f3 ef3 15.Nef3=) 13...ef3!–/+ 14.Bf3 (14.Ndf3 Ne4 Combination; 14.Nef3 Qe7 Combination; 14.Bf3 Qe7 Combination; 14.Rf3 Bd7 Combination; 14.gf3 Bh3 Deflection) 14...Qe7 15.Nc2 Bf5 16.Re1 Bg3 (16...Bg3 17.Rf1 Bd3–+) 0–1. ecluschei (2600) – pierred (2825), net–chess.com, 2015.

3.c3 Nf6 4.e3 b6 5.d4 (5.Nf3 Nc7=) 5...e6 (5...Nc7 6.Bd3=) 6.Bb2 (6.Nf3 Nc7+=) 6...Be7 (6...Nc7 7.Bd3=) 7.Nd2 (7.Nf3 0-0=) 7...0-0 8.Ngf3 Bb7 (8...d5 9.Be2=) 9.Bd3 d6 (9...d5 10.dc5 bc5 11.0-0=) 10.0-0 Rc8 (10...d5 11.dc5 bc5 12.b5=) 11.Qe2 (11.Qa4!? cd4 12.Nd4+/– (12.Ba6?! Ba6 13.Qa6 dc3=; 12.cd4?! b5 13.Qb5 Qb6+/–)) 11...Nc7+= 12.Rfd1 (12.c4 d5=) 12...cd4= 13.cd4 Nfd5 14.g3 (14.Rdc1 f5=) 14...f5 15.Rac1 Qe8 16.b5 Qh5 (16...Qg6 17.Rc2=) 17.Ne1 (17.Rc2 g5=) 17...Qh6 (17...Qe2 18.Be2 Kh8 19.Rc2=) 18.Rc2= Rf6 19.Rdc1 Nb4 20.d5 (20.ab4 Qh2) 20...Nc2 21.Bf6 Qf6 (21...Bf6 22.Rc2 Nd5 23.Rc8 Bc8 24.Nc4–/+) 22.Rc2–/+ Nd5 23.Rc8 Bc8 24.e4 Nc3 25.Qe3 fe4 (25...Bd7!?–/+) 26.Ne4 Ne4 27.Qe4 g6 28.Qa8 (28.Qc6 Qf8–/+) 28...Qc3 29.Ng2 Qc7 (29...d5 30.a4–/+) 30.Nf4 Kf7 31.Qf3 Kg7 32.Qe3 Qd7 33.h4 Bf6 34.Qf3 d5 (34...Qc7!?–/+) 35.h5= e5 (35...Qe7 36.hg6 hg6 37.Bg6=) 36.h6 (36.Nd5 Bd8 37.h6 Kh6 38.Qf8 Qg7 39.Qd8+–) 36...Kh6= 37.Nd5 Bg7?? (better is 37...Be7 38.Qe3 Bg5 39.Qe5 Qe6 40.Qe6 Be6+=) 38.Qe3+– g5 39.Qe4 Bf8 (39...Qf5 40.Qf5 Bf5 41.Bf5 Bf8+–) 40.Nf6 (better is 40.Ne7! Qd3 41.Ng8 Kg7 42.Qd3+–) 40...Qe7?? (better is 40...Qf7=) 41.Ng8 (41...Kh5 42.Qf3 g4 43.Qh1 Qh4 44.Qh4#) 1–0. Wolff,Armel David (2260) – Beck,Thomas, Geneve op, 1996.

3.bc5 Nc5 4.d4 Ne4 5.Bb2 (5.f3!? Qa5 6.c3+=) 5...d5 6.Nf3 (6.e3 Ngf6+=) 6...Qb6 7.Ra2 Ngf6 8.h3 (8.Nfd2 Bf5+=) 8...Qa5 9.c3 e6 10.e3 Bd7 11.Bd3 Ba4 12.Bc2 (12.Qe2 Bd6+=) 12...Bc2–/+ 13.Qc2 Rc8 14.0-0 Bd6 15.Nfd2 0-0 16.Re1 b5 17.Ne4 Ne4 (worse is 17...de4 18.Rc1+=) 18.f3 Nf6 19.Nd2 Bg3 (19...Rfd8 20.e4 Bf4 21.a4–/+) 20.Rf1 (20.Rb1 Qc7–/+) 20...Qc7 (20...Rc6 21.Qd3–/+) 21.f4 (21.a4 b4 22.Qd3 Bh2 23.Kh1 Nh5+=) 21...a5 (21...Rfe8 22.Qd1–/+) 22.Rf3 (22.a4!? b4 23.Qd3+=) 22...Be1–/+ 23.Nb1 b4 24.ab4–/+ ab4 25.Qd1 Bc3–+ 26.Bc3 bc3 27.Rc2 Ne4 28.h4 Rb8 29.Qc1 Rb3 30.Nd2 Nd2 (30...Nd2 31.Rd2 cd2 32.Qd2 Rfb8–+) 0–1. JAY2PLAY – Gorgol, ChessWorld.net, 2005.

3.bc5 Nc5 4.Nf3 Qa5 (4...Nf6 5.Bb2=) 5.Nc3 f5 (5...Nf6 6.Bb2=) 6.e3+= e6 7.Bc4 (7.Bb2 Nf6+=) 7...d5= 8.Bb5 Bd7 9.Bd7 Nd7 10.0-0 Bc5 (10...Ngf6 11.Rb1=) 11.a4 (11.Rb1 Rb8+=) 11...Ngf6= 12.Rb1 Rb8 13.Bb2 a6 (13...0-0 14.Nd4 Bd4 15.ed4=) 14.d4 (better is 14.Ng5!? Nf8 15.Ne2=) 14...Bb4+= 15.Qd3 0-0 16.Ng5 Rbe8 (16...Rfe8 17.Ra1+=) 17.Ra1 (17.Na2 Bd6 (worse is 17...Qa4 18.Nb4 h6 19.Nf3+/–) 18.Ba3 Ba3 19.Qa3 h6+=) 17...h6 (17...Qc7 18.Rab1+=) 18.Nf3 Ne4 19.Nh4?? (better is 19.Ne2+=) 19...Bc3 20.Bc3 Qc3 (20...Nc3 21.Ng6 Rf6 22.Nf4–+) 21.Ng6 (21.Rfb1 Qc6–+) 21...Rf6 22.Qc3 Nc3 23.Ra3 Ne2 24.Kh1 Rg6 25.Re1 Nd4! (25...Nd4 26.ed4 e5–+) 0–1. Lausten – Meggy, ChessWorld.net, 2009.

3.e4+= b5 4.Bb5+/– cb4 5.Nf3 e6 6.Ba6 Ba6 7.ab4 Bb5 8.d3 Bb4+= 9.Bd2 Bd2 10.Nbd2 f6 11.Qb1 Ba6?? 12.Ra6+– (12...Ne7 13.0-0+–) 1–0. dugmak – Izzy5150, ChessWorld.net, 2005.

3.e4+= Qb6 4.b5 Nc7 5.Nc3 +=.

3.e4 Qb6 4.c3 Nf6 +=.

3.e4 Nf6 +=.

3.b5 Nc7

4.c4 a6 5.a4 ab5 6.cb5 Nb5 7.Bb2 Nc7 8.e3 b6 9.Nf3 e6 10.Qb3 Na6 11.Bb5 Nf6 12.0-0 Be7 13.Nc3 0-0 14.Rac1 d5 15.d3 Bb7 16.Ne5 1–0. elsh1403 – mickeymouser, kurnik, 2012.

4.c4 a6 5.a4 ab5 6.cb5 Nb5 7.Bb2 Nd6 8.e3 Nf6 9.Nf3 e6 10.Nc3 Be7 11.Qc2 0-0 12.e4 Nfe8 13.e5 Nf5 14.Bd3 Nd4 (better is 14...d6–/+) 15.Nd4+= cd4 16.Nb5 (16.Bh7?! Kh8 17.Nb5 g6 18.Bg6 fg6 19.Qg6 Ng7=) 16...Bc5?? (better is 16...f5+/–) 17.Qc5+– d5 (17...f5+–) 18.Ba3 Nf6 19.ef6 gf6 20.0-0 Kg7 (20...Bd7 21.Qd4 e5 22.Qd5 Bb5 23.Qb5+–) 21.Qd4 e5 22.Bf8 Qf8 (22...Kf8 23.Qc5 Kg8 24.Nc7+–) 23.Qd5 Be6 24.Qe4 f5 25.Qe5 Kg8 26.Nc7 Rc8 27.Ne6 fe6 28.Qe6 Kh8 29.Rfe1 1–0. usingprogram (2000) – lydnils, kurnik, 2013.

4.c4 d5 5.cd5 Nf6=.

4.c4 d5 5.e3 d4 6.Bb2 d3 (better is 6...e5!?+=) 7.e4 Nf6 8.Qf3 Be6 9.Bd3 Bg4 10.Qe3 Ne6 11.f3 Bh5 12.Ne2 g5 13.g4 (better is 13.e5!? Nd7 14.Bf5+–) 13...Bg6+/– 14.Nbc3 h5 15.gh5 Rh5 16.Nd5 Bh6 17.0-0-0 g4 18.f4 (better is 18.Qf2!? Nd5 19.ed5 Bd3 20.de6+=) 18...Rh3= 19.Ng3 Nd5 20.ed5 Nf4 (worse is 20...Bf4 21.Qe2 Bd3 22.Qg4=) 21.Bg6 Ng6 22.Qc5 Rc8 23.Qb4?? (better is 23.Qd4!?+=) 23...Nf4 (better is 23...Qd5! 24.Qb3 Rc4 25.Kb1 Rc1 26.Ka2 Qb3 27.Kb3 Rd1 28.Rd1 Rh2–+) 24.Kb1 Nd3 25.Qc3 Nb2 (better is 25...Nf2–+) 26.Kb2+= Kf8?? (better is 26...Qc7 27.d3 a6=) 27.Qh8# 1–0. typ48 – fiction, kurnik, 2012.

4.c4 d5 5.e3 e5 6.Bb2 d4 7.d3 Bf5 8.Nf3 Bd6 9.Be2 Nf6 10.0-0 0-0 11.Nbd2 Ng4 12.h3 de3 13.hg4 ef2 14.Rf2 Bg4 15.Ne5 Be5 16.Be5 Be6 17.Ne4 f6 18.Bd6 Rf7 19.Bc5 b6 20.Be3 Ne8 21.d4 Nd6 22.Nd6 Qd6 23.c5 bc5 24.dc5 Qe5 25.Qd4 Qd4 26.Bd4 Rd8 27.Bc3 Rfd7 28.c6 Rd5 29.a4 Rc5 30.Bb4 Rc2 31.Bf3 Rc4 32.Ba5 Rdd4 33.Raa2 Rc1 34.Kh2 Ba2 35.Ra2 g5 36.c7 g4 37.Bc6 1–0. barborski – fiction (1625), kurnik, 2012.

4.c4 d5 5.e3 e5+= 6.cd5 Nd5 (6...Nf6 7.Bc4+=) 7.Bb2 Bd6 8.Nf3 Bg4 (8...Qf6 9.Nc3 Nc3 10.Bc3=) 9.Be2 (9.h3 Bf3 10.Qf3 Ngf6=) 9...Qe7 10.0-0 Ngf6 11.d3 0-0 12.Nbd2 Bc7 (12...a6 13.ba6 Ra6 14.d4 Bf3 15.Nf3=) 13.Nc4 e5 becomes the focus of attention (13.Qc2 Rfd8=) 13...e4 14.Nfe5 Be2 15.Qe2 a6 16.de4 ab5 17.ed5 bc4 18.Nc4 Nd5 19.Rfd1 Rfd8 20.e4 (20.Qh5 Qe6 21.a4 Qe4=) 20...Qe6 (20...b5 21.Qf3 Nf4 22.Ne3+=) 21.Qc2 Nb6 (21...Nf6 22.e5 Nd5 23.a4=) 22.Nb6 Bb6 23.Qc3 (23.a4 c4=) 23...f6 24.Qf3 (24.Rab1 c4 25.Qb4 Rac8=) 24...Bc7 (24...c4 25.Rd5=) 25.Rd5 (25.e5 Be5 26.Be5 Qe5 27.Qb3 Kh8 28.Qb7 c4=) 25...Rd5 26.ed5 Qb6 (26...Qd7 27.Rd1=) 27.Qe2 Qd6 Threatening mate: Qxh2 28.Qe6 Qe6+= 29.de6 Kf8 30.Rc1 b6 31.Rd1 Be5 32.Be5 fe5 33.Rd7 Ra3 Do you see the mate threat? 34.Kf1 b5 35.Rf7 Ke8 36.Rg7 b4 37.Rh7= b3 With the idea Ra4 (37...b3 38.Rb7 c4–+) 0–1. Nebe,Lutz – Klein,Andreas, corr, 1998.

4.e3 d5 5.a4 e5 6.Bb2 Bd6 7.d3 Nf6 8.Nf3 Qe7 9.Be2 0-0 10.0-0 e4 11.de4 de4 12.Nfd2 Bf5 13.c4 Rad8 14.Qc2 b6 15.Nc3 Be5 16.Rfd1 Bc3 17.Bc3 Rd7 18.Nf1 Rfd8 19.Rd7 Rd7 (19...Qd7? 20.Bf6 gf6 21.Rd1+–) 20.Rd1 Ne6? (20...Rd1 21.Qd1 a5 22.ba6 Na6 23.Ng3+/–) 21.Rd7 (21.Bf6 gf6 22.Rd7 Qd7+–) 21...Qd7? (21...Nd7 22.Ng3 Bg6+=) 22.h3?? (22.Ng3 Bg6 23.Bf6 gf6 24.Ne4 Kg7+–) 22...Nf8? 23.Ng3 Bg6 24.Bf6+– gf6 25.Ne4 Qe6 26.Bd3 Nd7 27.Ng3 Ne5 28.Bg6 fg6 29.Ne4 f5 30.Ng5 Qc4+= 31.Qc4 Nc4 32.Ne6 Nb2 33.Nd8 c4 34.Kf1 c3 35.Ke1 Na4 36.Kd1 Nc5 37.Nc6 a6 38.ba6 Na6 39.Kc2 Nc5 40.Kc3 Ne4 41.Kb4 Nf2 42.Nd4 Nd1 43.Nc2 Kf7 44.Kb5 Ke6 45.Kb6 Ke5 46.Kc5 Ke4 47.Kd6? Ne3 48.Ne3 Ke3 49.Ke5 Kf2 50.g4 fg4 51.hg4 Kg3 52.g5 Kg4 53.Kf6 Kf4 54.Kg7 Kg5 55.Kh7 Kf5 56.Kh6 g5 57.Kh5 Kf4 (57...Kf4 58.Kg6 g4 59.Kf6 g3 60.Ke6 g2 61.Kd6 Ke4 62.Ke6 g1Q 63.Kd6 Qb6 64.Ke7 Ke5 65.Kf7 Qf6 66.Kg8 Qe7 67.Kh8 Kf6 68.Kg8 Qg7#) 0–1. exp2005 – etkaspar (1650), kurnik, 2012.

4.e3 d5 5.Bb2 Nf6 6.Nf3 Bg4 7.a4 a6 8.b6 Ne6 9.a5 Ng5 10.Be2 Nge4 11.c4 g6? (11...dc4!? 12.Bc4 Nd6+=) 12.cd5 (12.d3!? Nd6 13.Bf6 ef6 14.cd5+/–) 12...Qd5+/– 13.d3 Nd6 14.e4 Nde4 15.de4 Qe4 16.Qa4 (16.Nbd2 Qc6+–) 16...Qa4 17.Ra4 Bd7 18.Ra1 Bg7 19.0-0 (19.Nbd2 Rc8+–) 19...0-0 20.Ne5 Bc6? (better is 20...Bb5!? 21.Nc4 Bc4 22.Bc4 Rfd8+/–) 21.Nc3 (21.Nc6 bc6 22.Rc1 Nd7 23.Bg7 Kg7+–) 21...Rac8? (21...Bd5+–) 22.Bf3 (22.Nc6 Rc6 23.Bf3 Rfc8+–) 22...Rb8?? (22...Bf3 23.Nf3 Rfd8 24.Rad1+/–) 23.Rad1 (23.Bc6 bc6 24.Nc6 Rb7+–) 23...Rfc8?? (23...Bf3 24.Nf3 Rfc8 25.Na4+–) 24.Rd2 Bh6? 25.Rdd1 Bf4?? 26.Nd5 Nd5 27.Bd5 Bd5 28.Rd5 c4 29.Nd7 Rd8?? 30.Bc3 Rbc8 31.Rfd1 Re8 32.g3 Bh6 33.f4 Bg7 34.Ne5 f6 35.Nd7 e6 36.Rc5 Kf7 37.Rc7 Rc7 38.bc7 Rc8 39.Nb6 Rc7 40.Rd7 Rd7+= 41.Nd7 Ke7 42.Nb6+/– Kd6 43.Nc4 Kc6 44.Nb6 e5 45.fe5 fe5 46.Kf1 Kb5 47.Ke2 Bf8 48.Nd7 Bb4 49.Bb4 Kb4 50.Ne5 Ka5 51.Kd3 Kb4+/– 52.Kc2 a5 53.g4 a4 54.Kb2 b5 55.h4 a3 56.Ka2 Ka4 57.Nc6 b4 58.Nd4+– h6 59.Nb3 Kb5= 60.Kb1 Kc4 61.Kc2 Kd5 62.Nc1 Ke4–+ 63.Na2 Kf4 64.h5 g5 (64...Kg4?? 65.hg6 Kf3 66.g7 b3 67.Kb3+–) 0–1. Bernhard,Alfred (1835) – Brandhorst,Dieter (2100), Ruhrgebiet VK3, 2008.

4.e4 d5 5.ed5 Nd5=.

4.e4 d5 5.e5 Bf5 6.Bb2 e6 7.d4 h5 8.dc5 Bc5 9.Nf3 g5 10.Bd3 g4 11.Nd4 Bd3 12.Qd3 Ne7 13.0-0 Ng6 14.Nb3 Be7 15.g3 h4 16.c4 hg3 17.hg3 dc4 18.Qd8? (better is 18.Qc4 Qd7 19.a4+=) 18...Rd8–+ 19.Na5 Nb5 20.Nc4 Nd4 21.Bd4 Rd4 22.Ne3 Ne5 23.Rd1 (23.Kg2–+) 23...Nf3 24.Kf1 Rh1 25.Ke2 Rdd1 26.Nd1 Re1 27.Kd3 Rd1 28.Kc2 Rf1 29.Ra2 Bf6 (better is 29...Rf2 30.Kb3 Nd4 31.Kc3 Ra2 32.Kd4–+) 30.Kb3 Rb1 (30...Rb1 31.Kc2 Rf1–+) 0–1. typ48 – wozlew, kurnik, 2012.

4.e4 e6=.

4.a4 d5

5.Bb2 Nf6 6.h3 (6.Nf3 Bf5=) 6...a6 (6...e6!?=+) 7.b6= Ne6 8.a5 Nd4 (8...g6 9.c4=) 9.c3 (9.Bd4 cd4 10.Nf3 Ne4=) 9...Nf5 10.Nf3 Nh5?? (10...e6 11.c4=) 11.Ne5?? (11.g4 Nhg3 12.fg3 Ng3+–) 11...f6?? (better 11...Nf6!?=) 12.e4 (12.Qa4 Bd7 13.Nd7 Qd7+–) 12...de4 (better 12...fe5 13.Qh5 g6+–) 13.Qb3?? (better 13.Qh5 g6 14.Ng6+–) 13...fe5–+ 14.Bc4? (better 14.g4 Nf4 15.gf5–+) 14...e3?? (better 14...Nd6 15.Bf1 Nf4–+) 15.Bf7 Kd7 16.Qe6 (16.Bh5?! ef2 17.Kf2 e6 18.Qa4 Kd6+=) 1–0. MARYMARY – The Historian, ChessWorld.net, 2011.

5.d3 d4 6.Bb2 (6.Nf3 e6=) 6...Nd5 (6...e5 7.Nd2+=) 7.g3 (7.Nf3 Bg4+=) 7...Nb4 (7...Ngf6!?+=) 8.Bg2 (8.Nf3 a6=) 8...e5 9.e4 (9.c3 Nd5=) 9...Be6 10.c3? (better is 10.Nf3 Bd6 11.0-0+=) 10...Nd3?? (better is 10...dc3 11.Bc3 Nd3 12.Kf1 Nf6–+) 11.Qd3+– Bb3?? (11...c4!? 12.Qd2 d3+–) 12.Nd2 (better is 12.c4 Bc4 13.Qc4+–) 12...Be6 13.c4 a6 14.ba6 ba6 15.Ngf3 f6 16.0-0 Bd6 17.Nb3 Qb6 18.Nfd2 h5 19.f4 ef4? 20.gf4 Nh6 21.e5 fe5 22.Ba8 ef4 23.Qg6 Bf7 24.Qe4 Kd7 25.Rae1 Re8 26.Qb7 Qb7 27.Bb7 Kc7 28.Re8 Be8 29.Ba6 d3 30.Bb5 Bf7 31.Bg7 Nf5 32.Bb2 Ne3 33.Rf3 Nd1 34.Bc1 h4 35.Ne4 Be7 36.Bf4 Kd8 37.Rd3 Kc8 38.Rd1 Bg6 39.Nec5 Bc2 40.Bd7 Kd8 41.Nb7 (41.Ne6) 1–0. chestnut_1 – Meggy, ChessWorld.net, 2009.

5.d3 e5 6.Nf3+=.

5.e3 Nf6 6.c4 (6.Bb2 Bf5=+) 6...g6 (6...e5 7.Bb2 Bd6 8.Nf3–/+) 7.Bb2 Bg7 8.Nf3 0-0 9.Be2 b6 (9...dc4 10.0-0=+) 10.d3 (10.0-0 a6=) 10...dc4 11.dc4 Bb7 12.Nbd2 Ne4 (12...a6 13.0-0=) 13.Bg7+= Kg7 14.Ra2 (14.Ne4 Be4 15.a5 Qd1 16.Rd1 Rfd8+=) 14...Ne8 (14...a6 15.Ne4 Be4 16.Rd2+=) 15.0-0 Qc7 16.a5 Nd2 (16...Rd8 17.Qa1 Kg8 18.Rd1+=) 17.Rd2 Nd6 18.a6 Bf3 19.Bf3 (< 19.gf3 Rad8=) 19...Rad8 20.Qc2 Nf5 21.Rfd1 Rd6 22.Be4 (22.Rd6 Nd6 23.Qc3 Kg8+/–) 22...Rfd8 23.Bf5 gf5 24.g3 (24.Qc3 Kg8+/–) 24...Rd2+= 25.Rd2 Rd2 26.Qd2 Qe5? (better is 26...e5+/–) 27.Qd7+– Qe4 28.Qa7 Qb1 29.Kg2 Qe4 30.f3 Qe3 31.Qb7?? Qd2 32.Kh3 Qh6 33.Kg2 Qd2 34.Kf1 Qd1 ½–½. Sternik,Ryszard – Svensson,Jan, corr 3GMM–13, 1995.

5.Nf3 Nf6 =+.

4.c4 Nf6

5.Bb2 d5 6.cd5 Nb5 7.e3 =+.

5.Bb2 e5 6.Be5 d6 7.Bc3 Ne4 8.Bb2 d5 9.e3 Bf5 10.f3 Nd6 11.Nc3 dc4 12.e4 Bg6 13.Qe2 Qf6 14.e5 Qf4 15.ed6 Kd7 16.dc7 Qc7 17.Qc4 Re8 18.Be2 a6 19.ba6 ba6 20.Nd5 Qa5 21.Bc3 Qd8 22.Qa6 f5 23.Qc6 Kc6 24.Nf4 Kb6 25.a4 Re7 26.a5 Kc6 27.Ngh3 Be8 28.0-0 g5 29.Bh8 gf4 30.Bf6 Re2 31.Bd8 Kd7 32.Bb6 Kc8 33.Nf4 Bb5 34.Ne2 c4 35.Nd4 Ba4 36.Ra4 Kb7 37.Rc4 Ka6 38.Rc6 Kb7 39.Bc5 Bg7 40.Rb1 Ka8 41.a6 1–0. alt20 – veelox, lichess.org, 2015.

5.Bb2 e6 6.Qa4 Be7=.

5.Bb2 e6 6.e3 d5 7.cd5 Ncd5 8.d4 =+.

5.Bb2 e6 6.e3 Be7 7.Nf3 0-0 8.Bd3 d5 9.0-0 a6 10.a4 (10.b6 dc4 11.Bc4 Ncd5=+) 10...ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 b6 14.d4 Qd6 (15.dc5 Qc5=). Garcia – Bendig,Frank, corr SOK–91–75, 1992.

5.Bb2 e6 6.e3 Be7 7.Nf3=+ 0-0 8.Be2 d5 9.0-0 a6 (9...dc4 10.Bc4 a6 11.a4=) 10.a4 (10.b6 Nce8=) 10...ab5 11.ab5 Ra1 12.Ba1 dc4 13.Bc4 b6 14.d4 Qd6 15.dc5 Qc5 16.Qe2 Bb7 17.Nbd2 Qh5 18.Bd4 Nd7 19.Ra1 Ra8 20.Ra8 Ba8 21.Ne5 Qe2 22.Be2 Ne5 ½–½. Dopper,Johan – Bendig,Frank, corr SOK–92–91, 1992.

5.e3 e5 6.Bb2 d6 7.Be2 Be7 8.Nc3 0-0 9.Nf3 Bf5 (9...a6 10.ba6 ba6 11.Rb1=) 10.0-0 e4 11.Ne1 a6 (11...d5 12.f3=) 12.a4 (12.b6 Nce8=) 12...d5 13.d3 (13.f3 ef3 14.Bf3 ab5 15.Nb5 Be6=) 13...dc4 14.de4 Ne4 15.Ne4 (15.Bc4? Nd2 16.Qe2 Nf1–+) 15...Be4 16.Bc4 Qd1 17.Rd1 ab5 18.ab5 Ra4 19.Rd7 (19.Rc1!?=+) 19...Rc4–/+ 20.Rc7 Bd8 21.Rc8 Bf5 22.Rb8 (22.Ra8 Rb4 23.Bc3 Rb3–+) 22...Rb4 23.Be5 Rb5 24.Nf3 f6 25.Bd6 Be7 26.Rf8 Kf8 27.Be7 Ke7 28.Rc1 (28.h3 Bd3 29.Rc1 Rb1 30.Rb1 Bb1–+) 28...Rb1 29.Rb1 Bb1 30.Kf1 b5 31.Ke2 Kd6 32.Nd2 Bg6 33.f3 c4 34.Kd1 Bd3 35.Kc1 b4 (35...Kc5 36.g4–+) 36.g3 (36.h4 c3–+) 36...b3 (better is 36...c3–+) 37.Kb2 Kc5 38.Kc3 Kb5 39.e4 Kc5 40.f4 (better is 40.h4–+) 40...Kd6?? (40...Be2 41.g4–+) 41.h4? (41.Nb3 cb3 42.Kd3–/+) 41...Ke6 (41...Kc5 42.h5–+) 42.g4 (42.Nb3 Be4 43.Nd4 Kd5 44.f5–/+) 42...Kd6 (42...h6 43.h5 Be2 44.Kd4–+) 43.g5 (43.Nb3 cb3 44.Kd3–+) 43...Ke6 44.Nb3 (44.gf6 gf6 45.Nb3 A) 45...cb3?! 46.Kd3 (46.Kb3?? Be4 47.Kc3 Kf5–+) 46...Kd6 47.Kc3=; B) 45...Be4 46.Nd4 Kd5–+) 44...Be4 (better is 44...cb3!? 45.gf6 Bc2 46.fg7–+) 45.Nd4–/+ Kd5 46.Ne2 (46.Nb5 Bg6–/+) 46...Bd3 47.Ng3 f5 (better is 47...fg5 48.hg5 g6–+) 48.Nh5? (better is 48.h5–+) 48...Ke4 49.Ng7 Kf4 50.Nh5 (50.Ne6 Kg4 51.h5 Kh5 52.Kd4–+) 50...Kg4 51.Nf6 Kh4 52.Nh7 f4 53.Nf8 Kg5 (53...f3!? 54.g6 Bg6 55.Ng6 Kg3 56.Kc4–+) 54.Ne6 Kg4 55.Kd2 f3 56.Ke3 Kg3 57.Nf4 f2 58.Nh5 Kg4 59.Nf6 Kf5 60.Kf2 Kf6 61.Ke3 (61.Ke1 Ke5 62.Kf2–+) 61…Ke5 (62.Kf2 Kd4 63.Ke1 Ke3 64.Kd1 c3 65.Ke1 Bc2 66.Kf1 Be4 67.Kg1 c2 68.Kh2 c1Q 69.Kg3 Qg1 70.Kh4 Kf4 71.Kh5 Qg5) 0–1. Frenzel,Lothar – Bendig,Frank, corr SOK–92–83, 1992.

2.a3 c6

3.Bb2 h5 4.Nf3 Rh6 5.g3 Nc7 6.Bg2 Nd5 7.c4 Ndf6 8.d3 Rg6 9.Nh4 Rg5 10.Qd2 Re5?? (better is 10...Rg4+–) 11.Be5 b5 12.cb5 cb5 (12...Bb7+–) 13.Ba8 d6 14.Bc3 Bd7 15.Bg2 1–0. linakip – lukasz4, kurnik, 2012.

3.e3 b5 4.a4 (4.Nc3 Nf6+=) 4...Nb4 5.a5?? (better is 5.ab5!? Bb7 6.Nf3+=) 5...d5 (5...Nf6!?–/+) 6.c3+= Na6 7.d3 e6 8.h4 Qf6 9.d4–/+ Nh6 10.g4 Ng8 11.g5 Qf5?? 12.f4 Qe4?? 13.Nf3+– Ne7 14.Qe2 Nf5 15.Rh3 Nd6 16.Bg2 e5 17.h5?? Bh3–+ 18.Bh3 ef4 19.Bg2? Qf5 20.ef4 Ne4 21.Na3? Be7 22.Ne5 Nc3 23.Qe3 Bb4 24.Nc6 Kd7?? 25.Bd2?? Rae8 26.Ne5= Kc7? 27.Bc3+– Bd6?? 28.Nb5 Kb8 29.Nd6 Qe6 30.Ndf7 Rhg8 31.Bh3 Qe7 32.Nc6 Kb7 33.Ne7 Nc7 34.Nd6 Kb8 35.Ne8 Re8 36.Bd7 Rf8 37.Rb1 Ka8 38.Bc6# 1–0. Eries – kiwi phill, ChessWorld.net, 2012.

3.e3 Nf6 4.Nc3=.

3.e4 Nc7 4.Qf3 Nf6 5.d3 Nb5 6.c3 h6 7.a4 Nc7 8.Qg3 Nh5 9.Qh4 Nf6 10.Bb2 g5 11.Qh5?? (better is 11.Qg3=) 11...Nh5–+ 12.Be2 Nf4 13.Bf3 (13.c4 Rg8 14.g3 Ne2 15.Ne2–+) 13...Nd3 14.Kd2 Nb2 15.Ra2 Nc4 16.Kd1 Ne6 17.Be2 Ne5 18.h3 Qb6 19.a5 Qf2 20.Nd2 Qg2 21.Bf3 Nf3 22.Ngf3 Qh1 23.Kc2 Qh3 24.c4 g4 25.Ne5 g3 26.Nef3 g2 27.Ra1 Bg7 28.Re1 Bf6 29.e5 Bh4 30.Re4 Bg3 31.b5 Nc5 32.Rd4 Bf2 33.Kd1 Bd4 34.bc6 Qh1 35.Kc2 Qa1 36.cd7 Bd7 (36...Bd7 37.Nh2 Qe1 38.e6 Ba4 39.Nb3 Bb3) 0–1. Pekin Dragons – kiwi phill, ChessWorld.net, 2011.

2.a3 d5

3.Bb2 e6 4.e3 Bd6?? (better 4...Nb8=) 5.Bg7+– Be5 6.Be5 f6 7.Qh5 Kf8 8.Bb2 e5 9.c4 dc4 10.Bc4 Ne7 (10...Qe8 11.Qf3 e4+–) 11.Qf7 1–0. GuestPDWZ – GuestHLXW, freechess.org, 2017.

3.Bb2 Nf6 4.Nf3 e6 5.Ne5 (5.e3 Nb8=) 5...Qe7 (5...Nb8 6.e3=) 6.e3+= c5 (6...Nb8 7.c4+=) 7.Bb5 (7.Ba6 ba6 8.bc5 Qc5+=) 7...Bd7 (7...Nd7+=) 8.Nc3 (8.Ba6 ba6 9.0-0 Rc8+=) 8...Nc7 (8...Bb5 9.Nb5 cb4 10.0-0=+) 9.Ba4 (9.Nd7 Nd7 10.0-0 a6 11.Bd7 Qd7=) 9...b5 (better is 9...Ba4 10.Na4 cb4=+) 10.Nb5? (better is 10.Bb3!?=) 10...Nb5 (better is 10...Bb5!? 11.Bb5 Nb5–+) 11.Nd7–/+ Qd7 12.Be5 (better is 12.Bf6 gf6 13.bc5 Bc5 14.Qf3–/+) 12...Ne4?? (better is 12...Rc8–+) 13.d3= f6 (13...Nf6 14.c4 a6 15.bc5 Bc5 16.Bf6 gf6 17.Rb1 (< 17.cb5 ab5 18.Bc2 Ba3=+) 17...dc4 18.dc4 Qd1 19.Rd1=) 14.Bb2 (better is 14.de4 a6 15.Bc3+=) 14...Nec3 (better is 14...Ned6 15.bc5 Nb7+=) 15.Qh5?? (better is 15.Bc3 Rb8 16.Bd2+–) 15...g6 16.Qh4?? Na4 17.Bc1 cb4 18.c4 dc4 19.Qc4 Qd5 20.Qb4 Bb4 21.ab4 Nbc3 22.Bd2 Qg2 23.Rf1 Rc8 24.h4 Qf3 25.Bc3 Nc3 26.Kd2 Qe2 27.Kc1 Qf1 28.Kb2 Qf2 29.Kb3 Qe3 (30.Ra5 Qd3 31.Rc5 Nd5 32.Kb2 Qd2 33.Kb3 Qb4 34.Kc2 Qc5 35.Kd1 Qe3 36.h5 Rc1#; 29...Nd5 30.Rc1 Rc1 31.Ka3 Ra1 32.Kb3 Qa2#) 0–1. Gregor123 – Turm87@, mySchach.de, 2004.

3.e4 de4–/+ 4.f3 Nf6 5.d3 (5.Nc3 Bf5+=) 5...ed3. JPKN3 – steveberkley, ChessWorld.net, 2016.

2.a3 e5

3.Bb2 d6 4.e4=.

3.Bb2 Bd6 4.Nf3+= Nf6 (4...Qe7 5.e4+=) 5.Ne5+/– 0-0 6.e3 Re8 7.Nf3 Nh5 (7...Be7 8.Bd3+/–) 8.Be2 Kh8 (9.Ng1 Nf6+/–; better is 8...b6!?+/–). marcosr – edonaghy, net–chess.com, 2005.

3.e4+= Nf6 4.Nf3 Bd6 (4...Nb8 5.Nc3+=) 5.Ba6 Ne4?? (better is 5...ba6 6.d3 a5+=) 6.Bc4+– f5 (6...Ng5 7.0-0+–) 7.0-0 Qf6 8.Re1 Rf8 (8...Ng5 9.Ng5 Qg5+–) 9.d3 Rf7 (9...b5 10.Bb5 Bb7+–) 10.Bf7 Kf7 11.de4 fe4 (11...f4 12.Bb2 Kf8 13.Nbd2+–) 12.Ng5 Kg6 (12...Ke7 13.Ne4 Qg6 14.f4+–) 13.Nc3 b6 14.Nce4 h6 15.Nf6 Kf6 16.Qf3 Kg6 (16...Ke7 17.Qf7 Kd8 18.Qg8 Ke7 19.Qg7 Kd8 20.Qf6 Ke8 21.Re5 Be5 22.Qf7 Kd8 23.Qf8) 17.Qf7 1–0. marekt – Scotty_Bro, ChessWorld.net, 2003.

2.a3 e6

3.Bb2 Nb8 4.e4 Qh4 5.d3 f6 6.Nf3 Qf4 7.Bc1 Qd6 8.Be2 h5 9.Nc3 Qc6 10.Bb2 Nh6 11.Qd2 Bd6 12.0-0 b5 (12...Qb6 13.d4+/–) 13.a4 (better is 13.Nd4!? Bh2 14.Kh2 Qd6 15.Kg1 Qd4 16.Nb5+/–) 13...Bb4+/– 14.d4 (14.Nd4!? Qb7 15.Bh5 Kd8 16.ab5+/–) 14...Bc3 15.Bc3 Qe4 (15...ba4 16.d5 Qd6 17.Ra4 ed5 18.ed5+/–) 16.Bb5 a6 17.Rfe1 Qf5?? (better is 17...Qd5 18.Bd3 Qc6+/–) 18.Nh4 (better is 18.Bd3 Qd5 19.Bg6 Kd8 20.Be4+–) 18...Qg4–+ 19.Nf3? ab5 20.a5 Bb7 21.Qe3 Nf5 22.Qe2 Ba6 23.d5 b4 24.Qe3 Ne3 25.Re3 Qf5 26.Bd4 Qd5 27.g3 Qc4 28.Rae1 Qc2 29.Nh4 Nc6 30.Kg2 Nd4 31.Re4 c5 32.Ng6 Rh6 33.Nf4 Bb7 34.Nd5 Bd5 35.Kg1 Be4 36.h4 Nf3 37.Kf1 Ne1 38.Ke1 Ra5 39.f3 Ra1# 0–1. pieeater – kiwi phill, ChessWorld.net, 2011.

3.Bb2 c5 4.b5 (4.e4!?+=) 4...Nc7= 5.e3 Nf6 6.c4 (6.Nf3 d5=) 6...Be7 (6...d5 7.Nf3=) 7.Nf3 0-0 (7...d5 8.Be5=) 8.Be2 d6 (8...d5 9.cd5 ed5 10.0-0=) 9.0-0 b6 (9...e5 10.Nc3=) 10.d3 (10.Nc3 Bb7=) 10...Bb7 11.Nbd2 Nd7 (11...a6 12.ba6 Ra6 13.Qb3=) 12.Qc2 f5 13.d4 (13.Rab1 Bf6=) 13...Bf6 (13...a6 14.ba6 Ra6 15.Rfb1=) 14.e4 (14.Rfd1 a6=) 14...cd4 15.Nd4 Bd4 (15...fe4 16.Ne4 Be5 17.Bd3=) 16.Bd4 e5 17.Bc3 Rc8 (17...Nc5 18.ef5 Bc8 19.f4 Bf5 20.Qd1=) 18.ef5 d5 (18...Qg5 19.Ne4 Qf5 20.Bd3+=) 19.Bb4 (19.f4 e4+=) 19...Nb5 (19...Rf7 20.Qa4+=) 20.Bf8 (20.cb5?? Rc2 21.Bd3 Rb2–+) 20...Nd4 21.Qd1 Qf8 22.Nf3 Ne2= 23.Qe2 e4 24.Nd2 Nc5 25.cd5 Ba6 26.Qg4 Bf1 27.Rf1 Re8 28.Re1 Qf6 29.Nf1 Qe5 30.Ne3+/– Nd3 31.Rd1 Qd6 32.Qg3 Ne5 33.Rc1 Qa3+= 34.Rc7 Nf7 35.h4 a5 36.Nc4 Qg3=+ 37.fg3 e3 38.Ne3+= Re3 39.Rc8 Nd8 40.Rd8 Kf7 41.Rb8 Kf6 42.g4+/– Rd3 43.Rb6 Ke5 44.Rb7 Rd5 45.Rg7+– a4 46.Re7 Kf4 47.f6 Kg3? 48.Re3 Kg4 49.f7 (49...Rf5 50.Rf3 Rf7 51.Rf7+–) 1–0. Bulcourf,Carlos (2295) – Riveiro,Jorge, Buenos Aires op3, 1993.

3.Bb2 d5 4.e3=.

3.e4 d5 +=.

2.a3 Nf6

3.e3 e5 4.Bb2 Bd6 5.c4 (better is 5.Nf3 e4 6.Nd4+=) 5...b5? (better is 5...c5 6.d4 ed4 7.bc5 Bc5 8.ed4 Be7=) 6.c5+/– Be7 7.Bb5 Nb8 8.Be5+– Nd5 9.Nf3 Rg8?! 10.Bc4 c6 11.Nc3 a6 12.Nd5 cd5 13.Bd5 Ra7 14.Bb8 Rh8 15.Ba7 Rf8 16.Bb6 Rh8 17.Bd8 Kf8 18.Ne5 d6 19.Be7 Ke7 20.Nf7 Kd7 21.cd6 Re8 22.Qa4# 1–0. Fournier,Frederic (1610) – elanonimo16, Active, 2008.

3.e3 e6 4.Bb2 Ne4 5.d3 (better 5.Ba6 ba6 6.d3+=) 5...Ng5?? (better 5...Nf6=) 6.h4+– Bb4 (6...c5+–) 7.ab4 Nb4 (7...0-0 8.b5 Nb8 9.Qg4 Nf3 10.Nf3+–) 8.hg5 (better 8.Bg7 Rg8 9.Bc3 Nd5+–) 8...d5 (8...Qg5 9.Rh5 Qg6 10.Rh4+–) 9.Nf3 (9.Bg7 Rg8 10.Bf6 Qd6+–) 9...Bd7 (9...0-0 10.d4 Re8 11.Qd2+–) 10.Ne5 (better 10.Bg7!? Rg8 11.Bf6 Qc8+–) 10...Bb5 (10...Qg5 11.Rh3 Qe7 12.Nd7 Kd7 13.Bg7+–) 11.Nc3 (11.Na3 Ba4 12.g6 fg6 13.Ng6 Rg8 14.Rh7 Qg5+–) 11...a6 (11...Bc6 12.Na2 Na2 13.Nc6+–) 12.Nb5 ab5 13.Ra8 (13.g6 fg6 14.Ra8 Qa8+–) 13...Qa8 14.Be2 (better 14.g6!? f6 15.Qg4 Nc2 16.Kd2 f5 17.Rh7 A) 17...fg4?? 18.Rh8 (18.Kc2 Qa4 19.Kd2 Rf8–/+) 18...Ke7 19.Ra8+– (19.Kc2 Qh8 20.Be2 g3 21.Ba3 Kf6–/+); B) 17...Qa5 18.Bc3 B1) 18...fg4 19.Rh8 (19.Kc2 Qa2 20.Bb2 Rf8–/+) 19...Ke7 20.Ba5+–; B2) 18...Rf8 19.Ba5 fg4 20.Bc7 g3 21.Rg7 Rf2 22.Be2 Rf5+–) 14...Qa2 (14...Qa5 15.Bc3 Qa3 16.Bb4 Qb4 17.Kf1+–) 15.Qc1 c6 (15...Qa5 16.Bc3 Qa4 17.g6 fg6 18.Ng6 Nc2 19.Kd2+–) 16.0-0 (better 16.c3 Na6 17.g6 fg6 18.Ng6 Rg8 19.Rh7 Nc5+–) 16...Qa4 (16...c5 17.c4 bc4 18.dc4+–) 17.Bd1 Na2 18.Qa1 h5 (18...Nb4 19.Ba3+–) 19.c3 Qh4 (19...Qa6 20.Bb3+–) 20.Qa2 Qg5 (20...0-0 21.g6 f6+–) 21.Qa8 Qd8 22.Qb7 (better 22.Qd8 Kd8 23.Nf7 Kd7 24.Nh8+–) 22...Qd7 (22...0-0 23.Ba3 Qc8+–) 23.Qd7 Kf8 24.Qe7! (24.Qf7?!= mate) 24...Kg8 (24...Ke7 25.Ba3 Double attack (25.Ba3 Decoy)) 25.Qf7 Kh7 26.Bh5 (26.Nd7 h4 27.Nf6 Kh6 28.Qh5) 26...c5 (26...Rc8 27.Bg6 Kh8 28.Qe6 Ra8 29.Nf7 Kg8 30.Nd8 Kf8 31.Qf7) 27.Bg6 Kh6 28.Ng4 (28.Qf4) 28...Kg5 29.f4 Kh4 (29...Kg4 30.Qe6 Kg3 31.Rf3 Kh4 32.Rh3) 30.Nh2 Rh6 (30...Re8 31.Rf3 b4 32.Rh3) 31.Rf3 Rh8 (31...Rg6 32.Rh3) 32.Rh3 1–0. GuestNYSY – GuestZCVT, freechess.org, 2017.

2.Bb2 Nb4

3.a3 Nc6 4.c4 Na5 5.a4 Nc4 6.Qb3 Nb2 7.Qb2 Nf6 8.e3 e6 9.g4 Ng4 10.Be2 Qf6 11.Nc3 Qf2 12.Kd1 Nf6 13.Nf3 Qg2 14.Rg1 Qh3 15.Nb5 Kd8 16.Ra3 c6 17.Nbd4 d5 18.Rb3 Qh6 19.h4 Ne4 20.Rb7 e5 21.Qb5 cb5 0–1. xtom – wozlew (1620), kurnik, 2012.

3.c3 Nc6 4.Nf3 –/+.

3.c3 Nd5 4.c4 Nb4 5.a3 b5?? 6.ab4+– bc4 7.g4 (7.e4 Bb7 8.Qc2 d5 9.ed5 Qd5+–) 7...Rb8 (7...Bb7 8.Nf3+/–) 8.Ra7+– Rb4 9.Ba3 Rb3 10.e4 d5 11.ed5 (better is 11.Ra8+–) 11...Qd5+= 12.Rc7?? (12.f3 Bg4 13.Bc4 Qc4 14.Ra8 Kd7 15.Rf8–+) 12...Qe5–+ 13.Qe2 (13.Ne2 Qc7 14.Nec3–+) 13...Rb1 14.Bc1 Rc1 0–1. bouffant – wonderhorse, net–chess.com, 2006.

3.c3 Nd5 4.c4 Nb4 5.a3 Nc6 6.d4 e6 7.g4 Nh6 8.h3 b6 9.Bg2 Bb7 10.d5 Na5 11.Nd2 Rb8 12.Qc2 Qg5 13.Ne4 Qe7 14.f4 Rc8 15.0-0-0 Qh4?? 16.Nf3?? Qe7 17.Qc3?? c6?? 18.Qd4?? Nb3–+ 19.Kc2 Nd4 20.Rd4 g6 21.d6 Qd8 22.Rd3 Rg8?? 23.Bf6 Be7?? 24.Be7 Qe7 25.de7 c5 26.Nd6 Ke7 27.Nb7 a5 28.Rhd1 Rc7 29.Nd6 f6 30.Ne4 f5 31.Nfg5 fe4 32.Be4 Rf8 33.f5 ef5 34.gf5 gf5 35.Nh7?? Rg8?? 36.h4 Rg4?? 37.Rf3?? Re4–+ 38.Ng5? Rc4 39.Kb2 Rh4 40.e4? Rh2 41.Kc3 Kf6 42.Rg3 b5 43.Nh7 Ke5 44.Rd5 Ke4 45.Nf6 Kf4 46.Rgd3 b4 47.ab4 cb4 48.Kb3 Rh1 49.R3d4 Kg5 50.Nd7 Rb1 51.Ka4 Ra1 52.Kb5 b3 53.Rb4 ab4 54.Kb4 b2 55.Ne5 b1Q 0–1. dsais – gperez, net–chess.com, 2002.

3.e3 e6 4.a3 (4.Be2 Nf6=+) 4...Nc6 5.Nf3 Nf6 6.c4 d5 7.Be2 (7.cd5 ed5 8.Bb5 Bd7–/+) 7...Be7 (7...Bd6 8.d4–/+) 8.0-0 0-0 9.d4 b6 (9...a6 10.Ne5–/+) 10.Nbd2 Bb7 11.Rc1 (11.cd5 Nd5 12.Bd3 a6=+) 11...Na5 (11...a6 12.Qc2=+) 12.cd5 Nd5 13.a4 Rc8 14.Ne5 (14.Re1 c5–/+) 14...Bf6 15.Ndf3 Qe7 (15...c5 16.dc5 bc5 17.Qc2–/+) 16.Ra1 (16.Qc2 Nb4 17.Qb1 Nb3=+) 16...Rfd8 17.Qc1? (17.Ng4 c5–/+) 17...a6 (better 17...Be5 18.Ne5 f6–+) 18.Ba3 Qe8 (18...c5 19.Qc2–/+) 19.Qc2 c5 20.dc5 bc5 21.Rad1 Nb4 22.Qb1 (22.Rd8 Bd8 (22...Nc2?! 23.Re8 Re8 24.Bc5=; 22...Qd8?! 23.Qb1–/+) 23.Qd1 Be7–/+) 22...Qa4 23.Bb2 Nb3 (23...Rd1 24.Rd1 Qc2 25.Qc2 Nc2 26.Bc3–+) 24.Bc3 (24.Rd8 Rd8 25.Rd1 Rd1 26.Bd1 Bf3 27.Nf3 c4–+) 24...Qa2 (24...Bf3 25.Bf3 Be5 26.Rd8 Rd8 27.Be5–+) 25.Qa2 (25.Rd8 Rd8 26.Bb4 Qe2–+) 25...Na2 26.Bb2 Nb4 (26...Bf3 27.Rd8 Rd8 28.Bf3–+) 27.Bc4 (27.Rd8 Rd8 28.Rd1 Rd1 29.Bd1 Bf3 30.Nf3 c4–+) 27...Bf3 28.gf3 (28.Nf3 Bb2 29.Bb3–+) 28...Nd2 29.Rd2 (29.Kg2 Nf1 30.Rd8 Rd8 31.Bf1 Rd2–+) 29...Rd2 30.Bc1 (30.Ba1 Rcd8–+) 30...Rc2 31.Bb3 (31.Nd7 Rc4 32.Nb6 Rc1 33.Rc1 Rc6–+) 31...Be5 (31...Rc3 32.Ba4 Be5 33.Bb2 Re3 34.fe3 Bb2 35.Rb1–+) 32.Bc2 Nc2 33.Bd2 c4 34.Rc1 Na3 35.Bb4 Nb5 Black intends c3 36.f4 Bb2 37.Rc2 c3 38.Kf1 Ba3 (better 38...Rc4 39.Be7–+) 39.Ba5 Kf8 (39...f6 40.Ke2–+) 40.Ke2 Ke7 41.Kd3 Kd6 (41...Bb2 42.e4–+) 42.Re2 (42.Bc3 Nc3 43.Rc3 Rc3 44.Kc3 Kc5–+) 42...c2 (better 42...Bb2 43.Rc2–+) 43.Rc2 Rc2 44.Kc2 Bc5 45.Kb3 (45.Kd3 h5–+) 45...Kd5 46.Bd2 (46.Bb4 Bb4 47.Kb4 Nd6–+) 46...Ke4 47.Kc4 Bb6 48.f5 (48.Be1 Kf3 49.Kd3 Kg4–+) 48...Nd6 49.Kb3 Nf5 50.Bc1 (50.Kc2 Kf3 51.Kd3 Kf2–+) 50...Kf3 51.e4 (51.Bb2 Kf2 52.e4 Nd4 53.Kb4 Ke3–+) 51...Ke4 52.Bb2 (52.f4 Ne3–+) 52...Kf3 53.Bg7 (53.Bc3–+) 53...Ng7 54.Kc4 Nf5 55.h4 Bf2 56.Kd3 a5 57.Kc3 a4 58.h5 a3 59.Kb3 a2! 60.Ka2 e5 61.h6 e4 62.Kb3 e3 63.Kc4 (63.Kb4 e2 64.Kb5 e1Q 65.Kc6 Nd4 66.Kd5 Qe6 67.Kc5 Qc6 68.Kb4 Qb5 69.Kc3 Qb3 70.Kd2 Qc2) 63...e2 64.Kd3 (64.Kb3 e1Q 65.Kb2 Qb4 66.Ka2 Qc3 67.Kb1 Qb3 68.Kc1 Be3) 64...e1Q 65.Kc4 (65.Kc2 Qb4 66.Kd3 Qb3 67.Kd2 Be3 68.Ke1 Qb1) 65...Qe5 (65...Nd6 66.Kb3 Qb1 67.Kc3 f6 68.Kd2 Ne4) 66.Kd3 (66.Kb3 Nd4 67.Kb2 Qb5 68.Ka1 Qa4 69.Kb2 Qb3 70.Kc1 Be3) 66...Qe4 (66...Qb2 67.Kc4 Nd6 68.Kd3 Qb3 69.Kd2 Ne4 70.Kc1 Be3) 67.Kc3 Qd4 (67...Qb1 68.Kc4 Nd6 69.Kd5 Qb6 70.Ke5 Qd4) 68.Kb3 Ne3 69.Ka3 Qc4 70.Kb2 Qc2 (70...Nd1 71.Kb1 Qb3 72.Kc1 Be3) 71.Ka1 (71.Ka3 Qc5 72.Kb3 Qb5 73.Ka2 Nc4 74.Ka1 Qb2) 71…Qd2 (71...Qd2 72.Kb1 Nd1 73.Ka1 Qb2) 0–1. BeepBeepImAJeep (2770) – likewater (2755), lichess.org, 2020.

2.b5 Nb8

(--> 1.b4 Nc6 2.b5 Nb8).

3.Bb2 d5 (-->1.b4 d5 2.Bb2 Nc6 3.b5 Nb8).

3.Bb2 Nf6 (--> 1.b4 Nf6 2.Bb2 Nc6 3.b5 Nb8).

2.b5 Nc5

3.Ba3 Ne4 4.f3 Ng5 5.Nh3 (5.e4 Nf6=) 5...Ne6 (better is 5...Nh3 6.gh3 e5–/+) 6.e3 Nf6 7.g4 Nd5 8.c4 Nf6 9.d4 c5 10.d5 (10.dc5?! Qc7 11.Nc3 Nc5+=) 10...Nc7 11.Bc5 d6 12.Bb4 a5 13.Bc3 Nd7 14.Bd4 b6 15.f4 f6 16.g5 f5?? (16...e5 17.de6! Ne6 18.Bg2+–) 17.Nc3 (better is 17.Qh5 g6 18.Qh4+–) 17...e5 18.fe5?? de5–/+ 19.Bb6 Nb6 20.d6 Ne6 21.Bg2 e4 22.Na4? Nc4 23.Qd5 Ne3 24.Qa8 Nc2 25.Ke2 Na1 26.Ra1 Bd6 27.Rc1? Nc7 28.Qa5 Bh2 29.b6?? Nd5 30.Kf2 Bd7?? 31.Qd5+– Qb8 32.Rc7?? Bc7–/+ 33.Nc5? Bb5?? 34.Qe6 Kd8 35.bc7 Qc7 36.Qd5 (36.Qd5 Ke7 37.Qf5 e3 38.Ke3 Qg3 39.Kd4 Qg2 40.Qe5 Kf7 41.g6 Qg6 42.Ng5 Qg5 43.Qg5+–) 1–0. pjc49 – kiwi phill, ChessWorld.net, 2012.

3.Bb2 a6 4.a4 c6 (4...d5 5.ba6 Ra6 6.e3=) 5.e3 (better is 5.Nc3=) 5...g5?? (better is 5...Nf6=) 6.Bh8+– f6 (6...ab5 7.ab5 Ra1 8.Ba1 d6+–) 7.Qh5# 1–0. Taulien,Christian (2110) – Wier,Daniel (2000), remoteschach.de, 2002.

3.Bb2 a6 4.ba6 Ra6 5.d4 Na4 6.Bc1 e6 7.e4 Rb6 8.c4 Bb4 (better is 8...Rb1!? 9.Rb1 Nc3=) 9.Bd2+/– Bd2 10.Nd2 Rb2?? (better is 10...Ra6+/–) 11.Qa4+– Rd2 12.Kd2 Qg5 13.Kc2 Nf6 14.f3 Ne4 (14...0-0+–) 15.fe4 Qe3 16.Nf3 Qe4 17.Kb2 0-0 18.Re1 Qf4 19.Qb5 c6 (19...f6 20.Bd3+–) 20.Qe5 Qh6 21.c5 f6 22.Qc7 e5 (22...Qh5+–) 23.Bc4 Kh8 24.Qd6 g5 25.Ne5! b5 (25...fe5 26.Qh6) 26.Nf7 Rf7 (26...Kg7 27.Nh6 bc4 28.Nf5 Kg6 29.Qf8 c3 30.Kc3 Kf5 31.Rhf1 Kg4 32.Re4 Kh5 33.Qf7 Kh6 34.Rf6#) 27.Bf7 (27.Re8 Kg7 28.Bf7 Kf7 29.Qe7 Kg6 30.Rg8 Kh5 31.Qe2 Kh4 32.Qf2 Kh5 33.Qf3 g4 34.Qg4#) 27...Qh4 (27...Kg7 28.Re8 Kf7 29.Qe7 Kg6 30.Rg8 Kh5 31.Qe2 Kh4 32.Qf2 Kh5 33.Qf3 g4 34.Qg4#) 28.Qf6# 1–0. Trkn – guest2875, ICC, 2004.

3.Bb2 d5 4.e3 Qd6 5.Nf3 Ne4 6.Be2 Ngf6 7.0-0 Ng4 8.h3 Ngf6 9.d3 e6?? (better is 9...Nc5+=) 10.de4+– Bd7 (10...Ne4 11.c4 f6+–) 11.e5 Qb6 12.ef6 gf6 13.Bd4 Qd6 14.Bf6 Rg8 15.Qd3 e5 (15...Rg6 16.Be5 Qb6 17.Bd4+–) 16.Be5 Qb6 (16...Qh6 17.Qd5 Qh3 18.Bg3+–) 17.Nc3 0-0-0 18.Nd5 Qe6 19.Qh7 Bc5 20.Nf4 f6 (20...Qe8+–) 21.Ne6 Be6 22.Qc7 1–0. Brennecke,Willi – Grimm,Wolfgang, D0103 DESC, 2001.

3.Bb2 Nf6 4.Nf3 g6 5.e3 Bg7 6.d4 Nce4 7.Nbd2 b6 8.Ne4 Ne4 9.Nd2 Nd6 10.Bd3 0-0 11.0-0 Bb7 12.c4 a6 13.Qc2 Ra7 (13...ab5 14.c5 Nc8 15.Bb5+=) 14.a4 Qa8 15.f3 f5 16.c5 Nc8 17.e4 e6 18.Rfc1 ab5 19.ab5 Bh6 20.Ra7 Na7 21.ef5 gf5 22.Re1 Bd5 23.Nc4 Nc8 (23...bc5!? 24.dc5 Nb5+=) 24.Ne5 d6 (better is 24...Rd8!?+/–) 25.Ra1+– Na7 26.Nd7 Rf7 27.cb6 Be3 28.Kh1 (better is 28.Kf1 Rd7 29.Ra7+–) 28...Rd7? (28...cb6 29.Nb6 Qb7 30.Nd5 ed5 31.Bf5 Re7+–) 29.Ra7 (29.ba7 c5 30.bc6 Rc7+–) 29...Qb8 (29...Qc8 30.Bf5! ef5 31.Qf5+– (31.bc7?! Re7+/–)) 30.Rc7 (30.bc7 Rc7 31.Rc7 Qb6 32.Bf5 ef5+–) 30...Rd8 (30...Qe8+–) 31.Bf5! Qb6 32.Bh7 Kh8+– 33.Bd3 Qa5 34.Rh7 Kg8 35.Bf1 Qe1 36.Qg6 (36.Qg6 Kf8 37.Qf7) 1–0. Klein,Andreas (1980) – Tonndorf,Matthias (2115), Wilhelm Werner Memorial–M, 2004.

3.c4 d6 4.d4= Ne6 (4...Nd7 5.e3=) 5.Bb2 (5.Nf3 Nf6+=) 5...c5 (5...Ng5 6.e3=) 6.Nf3 (6.d5 Nc7+=) 6...cd4= 7.Nd4 Nc5 (7...Nd4 8.Qd4 Nf6 9.e4=) 8.Nb3 (8.e3 e5 9.Nb3 Na4=) 8...Bf5 (8...Na4 9.Ba3=) 9.Nc3 (9.f3 Na4 10.Bd4 e5=) 9...Nb3 (9...Nf6!?=) 10.ab3+= e5 (10...Nf6 11.e4 Bg6 12.Bd3+=) 11.e4 Bd7 (11...Bg6 12.Bc1+=) 12.Qd5 (better 12.Be2+–) 12...Be6? (better 12...Qc7+=) 13.Qb7+– Rb8 (13...Be7 14.Ra7 Ra7 15.Qa7+–) 14.Qa7 d5? (14...Nf6+–) 15.ed5 (15.cd5?! Bd7+–) 15...Rc8 (15...Bg4+–) 16.de6 fe6 17.Rd1 Bc5 1–0. GuestDNDP – GuestRZZM, freechess.org, 2018.

3.c4 g6 4.Bb2 Nf6 5.e3 Bg7 6.d4 Ne6 7.Bd3 0-0 8.Nc3 b6 (8...a6 9.Nf3=) 9.Nf3 Bb7 10.a4 d5 11.cd5 Nd5 12.Rc1 (12.Nd5 Bd5 13.Qc2 Nc5+=) 12...Nb4 (12...c5 13.Nd5 Bd5 14.0-0=) 13.Be2 Rc8 14.Qb3 (14.0-0 c5=) 14...a5 (14...Bf3 15.gf3 (< 15.Qb4 c5 16.dc5 Bg2=+) 15...c5 16.bc6 Nc6 17.Qb5=) 15.ba6 Na6 16.0-0 c5 (16...Qd6+=) 17.Rfd1 (17.d5 Nec7 18.e4 Nb4+/–) 17...Qc7 (better is 17...cd4 18.Nd4 Bd4 19.ed4 Nd4=+) 18.d5+/– c4 19.Qb5 Nec5 20.Bc4 (20.Qc4 Rfd8+/–) 20...Rfd8 (20...Nb8 21.Nd2+/–) 21.Ba3 (21.e4 Qf4+–) 21...Bc3+/– 22.Rc3 Ne4 (22...e6 23.Qb1+/–) 23.Rc2 (23.Rcc1 Nd6 24.Bd6 Rd6+–) 23...e6 (better is 23...Nac5 24.Bc5 Qc5+–) 24.Bd3 (24.Nd4 e5 25.Bd3 Nc3+=) 24...Nec5 (better is 24...Nc3!? 25.d6 Qb8 26.Rc3 Rc3=) 25.de6+/– fe6 (25...Bf3 26.gf3 fe6 27.Rdc1+/–) 26.Be2 (26.Nd4!? Bc6 27.Nc6 (27.Bc5 Bb5 28.Nb5 Rd3 29.Rd3 Qe5–+) 27...Qc6 28.Rdc1+–) 26...Rd1 27.Bd1 Rd8 28.Be2 (28...Bc6 29.Qb1 Ba4 30.Rb2+/–) 1–0. Starosta,W – Morrison,Robert, Arlington CC, 1990.

3.d4 Na4 4.c4+/– Nb6 5.c5 Nc4 6.e4 d5 7.ed5 Qd5? (better is 7...Na5+/–) 8.Nc3+– Qe6 9.Be2 b6 10.Nf3 bc5 (10...Na5+–) 11.Ng5 Nb2 (11...Qd7 12.Bc4 e6 13.d5+–) 12.Bb2 Qg6 (12...Qf5 13.Bf3 Qg5 14.Ba8+–) 13.Nd5 Bb7 (13...Qg5 14.dc5 f6 15.Nc7 Kf7 16.Na8 Qg2+–) 14.Nc7 Kd7 15.dc5 Kc7 16.Be5 Kc8 17.c6 Bc6 (17...Nf6 18.cb7 Kb7 19.Bf3 Nd5 20.Qd5 Kb6 21.a4 Qb1 22.Rb1 Rc8 23.Qb7 Kc5 24.Qc8 Kb6 25.Qc7) 18.bc6 Qc6 (18...Qd6 19.Bd6 a6 20.Qb3 ed6 21.Qb7 Kd8 22.Qd7) 19.Rc1 Qc1 (19...Kb7 20.Rc6 Rb8 21.Rc7 Ka8 22.Qd5 Rb7 23.Qb7) 20.Ba6 1–0. pierred (2825) – acaudron (2295), net–chess.com, 2015.

3.e3 d5 4.a4 (4.Nf3 Nf6=) 4...a6 (4...e5 5.Bb2 Bd6 6.Nf3=) 5.Bb2 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.Nf3 g6 (8...e6 9.Be2=) 9.Be2 Bg7 10.0-0 0-0 11.c4 (11.Bd4 Nce4=) 11...dc4 12.Bc4 Bf5 13.d4 Nce4 14.Nbd2 Nd6 15.Be2 Nd5 16.Qb3 Nb6 (16...e6 17.Ne5=) 17.Ne5 Be6 (17...Ne4 18.Ne4 Be4 19.Rc1+=) 18.Qb1 Qa8 (18...f6 19.Nd3=) 19.Bc3 (19.Rc1 Nd5+=) 19...Bf5 (19...f6 20.Nef3+=) 20.Qb4 Nd5 21.Qb3 Nc3 (21...e6 22.Ra1 Qd8 23.Ba5+=) 22.Qc3 Rc8 (22...Qa2 23.Ra1 Qd5 24.Ra5+=) 23.Ndf3 (23.e4 Be5 24.de5 Ne4 25.Ne4 Be4+=) 23...Ne4 (23...Qa2 24.Re1=) 24.Qb3+= Be6 25.Bc4 Bc4 26.Qc4 Nd6 27.Qb3 Qa5 Exerts pressure on the isolated pawn 28.h3 (better 28.Rb1!?=) 28...Qb5=+ 29.Qc2 (29.Qb5 Nb5 30.Rb1 c6–/+) 29...Be5 (29...c5 30.Rb1 Qa5 31.Rc1–/+) 30.Ne5 (30.de5 Nc4 31.Qe4 Qa6=+) 30...c6 (30...c5 31.Rb1 Qa5 32.Qd3–/+) 31.Rb1=+ Qd5 32.Nd3 f6 (32...Ra8 33.Qd1=+) 33.Nc5 b5 (33...Nb5 34.Rc1 (worse 34.Nb7 Na3 35.e4 Nc2 36.ed5 cd5–+) 34...Rb8 35.Qa4=) 34.Nd3 (34.Qd3 Rd8=+) 34...Ra8 (34...Nc4 35.Rd1–/+) 35.Nb4=+ Qc4 36.Qc4 bc4 (worse 36...Nc4 37.Nc6 Na3 38.Rb3= (38.Ne7? Kf7 39.Rc1 Ke7–+)) 37.Nc6 Ra2 (37...Kf7 38.Kf1=+) 38.Rc1 (38.Ne7 Kf7 39.Nd5 Ke6 40.Nf4 Kd7+=) 38...Kf7 (38...Kf8 39.d5=+) 39.Nd8= Ke8 40.Ne6 Kf7 (40...f5 41.g3=+) 41.Nc5 (41.Nd8 Kg7=) 41...e5=+ 42.de5 fe5 43.Rd1 (43.Nd7 Ra5=+) 43...Ke7 44.Rc1? (better 44.Rd5 Nf7 45.Rd7 Ke8 46.Rc7=+) 44...Ra5–+ 45.Ne4 (45.Nb7 Nb7 46.Rc4–+) 45...Ne4 46.Rc4 Ra1 47.Kh2 Nf2 48.Rc7 (48.Kg3 Nd1 49.Re4 Kd6–+) 48...Kf6 (48...Kd6 49.Rb7–+) 49.Rh7 Ne4 (49...Nd1 50.g4–+) 50.Rh8 (50.Rh4 Kf5–+) 50...Re1 51.h4 Kf5 52.h5 (52.Rc8 Re3 53.Rf8 Kg4–+) 52...gh5 (52...Kg4!? 53.Rg8 Kh5 54.Rg7–+) 53.Rh5 Ng5 (53...Kg4 54.Rh8–+) 54.Rh8 (54.Kg3 Re3 55.Kh4 Re4 56.Kg3 Rg4 57.Kf2 Ra4–+) 54...Re3 55.Rf8 (55.Kg1 Ra3–+) 55...Kg4 56.Kg1 e4 57.Kf2 Rd3 58.Re8 (58.Ra8 Rd2 59.Kf1 e3–+) 58...Rd2 59.Ke3 Rd3 (59...Rg2 60.Rg8–+) 60.Ke2?? (60.Kf2 Rb3 61.Ke1–+) 60...Rg3 61.Kf2 (61.Kf1 Rc3–+) 61...Rb3 62.Kg1 Rb2 63.Rg8 Rb1 (63...e3 64.Kf1–+) 64.Kf2 Rb2 (64...Ra1 65.Rd8–+) 65.Ke3?? (65.Kg1 Kf4 66.Kf1 Ne6–+) 65...Rb1 (65...Rg2 66.Re8–+) 66.Ke2?? (66.Kf2 Rc1 67.Re8–+) 66...Rb3 67.Kd2 (67.Rc8–+) 67...Rb2 (67...Rg3 68.Re8–+) 68.Ke3 Rb3 (68...Rg2 69.Re8–+) 69.Kd4?? (69.Kd2 Rg3–+) 69...Rb2 (69...Rd3 70.Kc5–+) 70.Kc3?? (70.Ke3 Rg2 71.Rd8–+) 70...Rg2–+ 71.Kd4 Kg3 (71...Kf3!? 72.Rf8 Ke2 73.Ra8–+) 72.Ke3?? (72.Rg5 Kf2 73.Rf5 Ke2 74.Ke4 Kd2=) 72...Re2 (better 72...Kh4–+) 73.Ke2= Kf4 74.Kf2 Kg4 (74...Nh7 75.Re8=) 75.Ke3 (75.Ke3 Kf5 76.Ra8=) 1–0. BeepBeepImAJeep (2760) – Federtiu (2630), lichess.org, 2020.

3.e3 Nf6 4.a4 d5 5.Nf3 Bf5 6.Bb2 e6 7.Be2 Be7 (7...Bd6 8.0-0=) 8.0-0 0-0 (better 8...Bg4=) 9.c4 (9.Nh4!?=) 9...dc4 (better 9...Nd3!? 10.Bd4 dc4–/+) 10.Bc4= Bd3 (10...a6 11.ba6 Na6 12.d3=) 11.Bd3 Qd3 (11...Nd3 12.Bd4=) 12.Ra3 Qd7 (12...Qf5 13.Bf6 Qf6 14.d4=) 13.d4 (13.Bf6!? gf6 14.Qc2+–) 13...Nce4= 14.Ra1 (14.Ne5 Qd8 15.Rb3 Nd6=) 14...a6 15.Ne5 Qd8 16.Nd2 Nd2 17.Qd2 Bd6 (17...Qd5 18.Qe2=) 18.Nc4 (18.Qe2 Nd5=) 18...ab5 19.ab5 Qd7 20.b6 (20.Nd6 cd6 21.Qd3 Nd5=) 20...c6 (20...Nd5 21.bc7 Bc7 22.Ne5=) 21.Qc2 Be7 22.Qb3 Qd5 23.Nd2 (23.Ra7!? Ra7 24.ba7+=) 23...Qb3=+ 24.Nb3 Rfc8 (24...Nd7!?=+) 25.Nc5 (25.Ra7 Bd8 26.Rb7 Rab8+=) 25...Bc5= 26.dc5 Kf8? (26...Nd7 27.Ra7 Ra7 28.ba7 Nc5+–) 27.Rfd1 (27.Bf6 gf6 28.Ra7 Rab8+–) 27...Ke8 (27...Ra1 28.Ra1 Nd7 29.Ra7+=) 28.Bf6 gf6 29.Kf1 Rd8 30.Ke2 (30.Rd8 Rd8 31.Ra7 Rd7+–) 30...Ke7 (30...Ra1 31.Ra1 f5 32.Ra7+–) 31.g4 e5 (31...Ra1 32.Ra1 f5 33.gf5 ef5 34.Kf3+–) 32.h3 Ke6 33.e4 Rab8 (33...Ra1 34.Rd8 Ra4 35.Kd3 Ra3 36.Kc4 Ra4 37.Kc3+–) 34.f3 Rd1 35.Kd1 Rd8 36.Ke2 Rd7 (36...h6 37.Ra7 Rd7 38.Ra8+–) 37.Ra7 Ke7 38.Ke3 Kd8 (38...Ke8 39.Ra8 Rd8 40.Rd8 Kd8 41.f4+–) 39.f4 (39.Ra8 Ke7+–) 39...Kc8?? (better 39...Ke8+–) 40.Ra8 1–0. BeepBeepImAJeep (2750) – MishaAndguladze (2640), lichess.org, 2020.

3.d4 Ne4

4.Bb2 c6 5.c4 (5.Qd3 Qa5 6.Nd2 Qd2 7.Qd2 Nd2 8.Kd2 cb5+=) 5...Ngf6 (5...Qa5 6.Bc3 Nc3 7.Qd2–/+) 6.Nd2 (6.Qb3 cb5 7.Qb5 Qc7=) 6...e6 (6...cb5 7.cb5 Qa5 8.e3+=) 7.Ngf3 (7.Qa4 Nd2 8.Kd2 Ne4 9.Ke3 Nd6+=) 7...a6 (7...cb5 8.c5–/+) 8.a4 (8.bc6 bc6 9.c5 Rb8=) 8...d5 (8...Bb4 9.bc6 Nd2 10.Nd2–+) 9.e3 (9.bc6 bc6 10.e3 Bb4=) 9...Bd6 (9...Bb4 10.bc6 Ng4 11.cb7 Bb7 12.a5–/+) 10.c5 Bc7 (10...Be7 11.b6+=) 11.Ne4 (11.b6 Bb8+=) 11...de4 12.Nd2 e5? (better is 12...ab5 13.ab5 Ra1 14.Qa1 cb5 15.Bb5 Bd7+=) 13.b6+– Bg4? (better is 13...Bb8 14.de5 Bg4+–) 14.bc7 Qc7 15.Be2 Bh5 16.Bh5 b5 17.ab5 cb5 18.Be2 b4 19.Ra6 Qc8 20.Qa4 Nd7 21.Ra8 0-0 22.Rc8 Rc8 23.Qd7 Rb8 24.c6 h5 25.Ne4 b3 26.Bc4 Rb4 27.Qf7 Kh7 28.Qh5 1–0. Trkn – Homer_Simpson, itsyourturn.com, 2000.

4.c4 d5 5.c5 b6 6.f3 Nef6 7.c6 a6 8.e3 ab5 9.Bb5 Ba6 10.Ba6 Ra6 11.a4 e6 12.Bd2 Qa8 13.Qc2 Ne7 14.Nc3 Qc6 15.Nge2 Nf5 16.0-0 Be7 17.Rfc1 Kd7 18.g4 Nd6 19.Qb3 Nc4 20.Qb5 Qb5 21.Nb5 c6 22.Rc4 dc4 23.Nbc3 Rha8 24.e4 Bb4 25.Kf2 b5 26.Rb1 Bc3 27.ab5 cb5 28.Bc3 Rb8 29.Bb4 Ra2 30.Ke3 Ne8 31.e5 Nc7 32.h4 Nd5 0–1. blackiwhite (1640) – bordelar (1860), kurnik, 2012.

4.c4 e6 5.Bb2?? (5.e3 d5=) 5...c6?? (5...Bb4 6.Nc3 Qh4 7.g3 Nc3 A) 8.gh4?? Ne4 (8...Nd1?! 9.Kd1 Nf6 10.a3+=) 9.Qd2 Bd2 10.Kd1 Ba5–+ (worse is 10...Nf2 11.Kd2 Nh1 12.Ke1–+); B) 8.Qd2–+) 6.a4?? (better is 6.Qa4=) 6...Qa5 7.Nd2 Bb4 8.Ngf3+= Ngf6 9.e3 Nd2 10.Nd2+= Ne4 11.Bc1 Nd2 12.Bd2+= Bd2 13.Qd2 Qd2 14.Kd2 cb5 15.ab5 b6 16.Bd3 Bb7 17.f3 0-0 18.e4 d5 19.cd5 ed5 20.e5 f6 21.e6 Rfe8 22.Rhe1 Re7 23.f4+– g6 24.g4 Bc8 25.f5 gf5 26.Bf5 Kg7 27.h4 Kh6 28.Ra3 a6 29.Rea1 a5 30.Rc3 Be6 31.Rc6 Bf5= 32.gf5 Kg7 33.Rb6+= h5 34.Rg1+– Kf7 35.Rg6 a4?? 36.Rgf6 Ke8? 37.Ra6 Rea7? 38.Kc3 Rc7 39.Kb2 Ra6 40.Ra6 Rc4 41.Rh6 Rb4 42.Ka3 Rb5 43.Ka4 Rb1 44.Rh5 Kf7 45.f6! Kf6 46.Rd5 Rf1? 47.Kb5 Rf4 48.h5 Ke6 49.Kc5 Rh4 50.Re5 Kf6 51.Kd5 Kf7 52.Rf5 Kg7 53.Ke5 Kh6 54.d5 Kg7 55.d6 Rh1 56.Ke6 Rd1 57.d7 Rh1 58.d8Q Rh5 59.Rh5 (59.Rh5 Kg6 60.Qg5#; 59.Rf7 Kg6 60.Qf6#) 1–0. olawoj – bentwhistle, kurnik, 2012.

4.Qd3 d5 5.g3 (5.f3!? Nd6 6.Nc3=) 5...Bf5–/+ 6.Bh3 Bh3 7.Nh3 Ngf6 8.f3 Nd6 9.0-0 (9.Bf4 e6+=) 9...Qd7–/+ 10.Nf4 Qb5 11.Nc3 Qd3 12.cd3 e6 13.e4 de4 14.de4 Nc4 15.Nb5 Kd7 16.Nd3 c6 17.Nc3 Bb4?? (17...Rd8 18.Bg5 Ke8 19.Ne2–/+) 18.Ne2?? (better is 18.Nb4 Ke7 19.Rb1+–) 18...Kc7?? (better is 18...Be7–/+) 19.Nb4+– 1–0. mikebaldini (1660) – chris_jz0pkr (1695), gameknot.com, 2015.

4.e3 b6 5.Bd3 Bb7 6.f3 Nd6 7.e4 e6 8.Ne2 f5 9.e5 Nf7 10.Be3 g5 11.Nd2 Ne7 12.h4 gh4 13.Rh4?? (better is 13.Nf4=) 13...Nd5–+ 14.Bf2 Ne3! 15.Be3 Qh4 16.g3 Qh1 17.Kf2 Qh2 18.Kf1 Bh6 19.Bh6 Nh6 20.Qe1 a6 21.ba6 Ba6 22.Ba6 Ra6 23.Qf2 Qf2 24.Kf2 Nf7 25.Nc3 Ke7 26.Rh1 Ra3 27.Ndb1 Ra5 28.f4 b5 29.a3 c6 30.Ke3 Raa8 31.Ne2 h5 32.Kf3 Nd8 33.Ke3 Nb7 34.Kd3 d5 35.Kc3 Na5 36.Kb4 Nc4 37.Kb3 Ra4 38.Nec3? (38.Rh4–+) 38…Na5 (38...Na5 39.Kb2 Rd4–+) 0–1. Ramme,C (2090) – Welling,G (2320), Bad Wiessee GER, 2011.

4.e3 d5 5.Nd2 Bf5 6.Ne4 Be4 7.Bd3 Nf6 8.Be4 Ne4 9.Nf3 e6 10.0-0 Bd6 11.Nd2 Nc3 12.Qe1 Nb5 13.c4 dc4 14.Nc4 c6 15.a4 Nc7 16.Nd6 Qd6 17.Qd1 Nd5 18.Ba3 Qd7 19.Rb1 Nc3 20.Qb3 Nb1 21.Rb1 b6 22.a5 Rb8 23.Qc4 Qd5 24.Qa4 b5 25.Qb4 Qd7 26.Rc1 Rc8 27.f4 f6 28.Kf2 Kf7 29.g4 h5 30.g5 fg5 31.fg5 Kg6 32.h4 Rhf8 33.Kg3 Qf7 34.Qb1 Qf5 35.Qf5 Rf5 36.Bd6 Rd5 37.Bc5 a6 38.e4 Rd7 39.Kf4 e5 40.Ke5 Re8 41.Kf4 Rf7 42.Ke3 Re6 43.e5 Rf5 44.Bd6 Rf7 45.Rc6 Rb7 46.Ra6 b4 47.Rb6 Rb6 48.ab6 b3 49.b7 Re8 50.Kd3 Kf5 51.Kc3 Ke4 52.b8Q Rb8 53.Bb8 b2 54.Kb2 Kd4 55.e6 1–0. carocan (1625) – anman (1780), kurnik, 2012.

4.e3 d5= 5.Bd3 Bd7 6.a4 (6.Nf3 Bf5=) 6...Ngf6 (6...e5 7.Nf3 Bb4 8.Nfd2 ed4 9.ed4=) 7.Qe2 (7.Ne2 Nd6=) 7...e6 8.Nf3 Be7 (8...Bb4 9.Bd2 Bd6 10.0-0=) 9.0-0 0-0 10.Ba3 (10.Ne5 c5+=) 10...Bd6 (10...Ba3 11.Ra3 c5 12.c4=) 11.Bd6 (11.Ne5 Ba3 12.Ra3 Rc8+=) 11...Nd6 (11...cd6 12.a5+=) 12.c4 (12.Nbd2 Qe8+=) 12...b6 (12...dc4 13.Bc4 Nc4 14.Qc4+=) 13.Qc2 (13.cd5 ed5 14.Rc1 a6 15.ba6 Re8+/–) 13...h6 (13...dc4!? 14.Bc4 c6+=) 14.Nbd2 (14.c5 bc5 15.dc5 Nde4+/–) 14...Qe7 (14...c6 15.c5 bc5 16.dc5+/–) 15.cd5 (15.Ne5 a6+/–) 15...ed5 16.Rfe1 (16.Ne5 Rfc8+/–) 16...Rac8 (16...c6 17.bc6 Bc6 18.Ne5+= (worse is 18.Qc6 Rac8 19.Ne5 Rc6 20.Nc6 Qb7–/+)) 17.e4 (17.Ne5 a6+/–) 17...de4+= 18.Ne4 Be6 (18...c5 19.dc5 Nfe4 20.cd6+/–) 19.Nd6 (19.Nc3 Qd8+/–) 19...Qd6 (19...cd6 20.Qd2+=) 20.h3 (20.Rac1 Rfe8+=) 20...c5 (20...c6 21.Qe2=) 21.dc5 Rc5 22.Qe2 Rfc8 23.Nd2 (23.Rad1 Rd5=) 23...Rc3 Black begins to deal mighty blows 24.Be4 (24.Bb1 Bd5=) 24...Ra3 (24...Qf4 25.Bb1=) 25.Bc6= Ra1 26.Ra1 Qd4 27.Qe1 Bd5 28.Bd5 Qd5 29.Rc1?? (better is 29.Nf3=) 0–1. Wartig,Wolfgang – Andre,Karl, corr (year?).

4.e3 d5 5.Bd3 Ngf6 6.Nf3 e6 7.0-0 Bd6 8.Bb2 0-0 9.c4 c6 10.c5 Bc7 11.a4 Bd7 12.Nc3 Nc3 13.Bc3 b6 14.Bb4 Re8 15.Qc2 Rc8 16.Rfc1 Bb8 17.Ng5 h6 18.Nf3 e5 19.de5 Be5 20.Ne5 Re5 21.Bc3 Re8 22.Bd4 Ne4 23.Be4 Re4 24.cb6 cb5 25.Qb3 ab6 26.Qd5 Re8 27.ab5 Qe7 28.Bb6 Qg5 29.Qg5 hg5 30.Rcb1 Rb8 31.Bc7 Rb5 32.Rb5 Bb5 33.Rb1 Rc8 34.Rb5 Rc7 35.g3 f6 36.Kg2 Rc4 37.Kf3 Kf7 38.Rb7 Kg6 39.h3 Ra4 40.g4 Rc4 41.Re7 Ra4 42.e4 Rb4 43.Kg3 Rb3 44.f3 Rc3 0–1. popovicigelu – pajac500 (1640), kurnik, 2012.

4.f3 Nd6 5.Nc3 c6 6.bc6 dc6 7.e4 e6 8.Be2 Be7 9.a4 Bh4 10.g3 Bg5 11.Bg5 Qg5 12.e5 Nf5 13.f4 Qd8 14.Nf3 Ngh6 15.Ne4 0-0 16.c3 Ng4 17.Qd3 Nge3 18.Rg1 Nd5 19.Ra3 h6 20.a5 Qe7 21.Nc5 Rd8 22.Qb1 Rb8 23.Qb3 Bd7 24.Bd3 b6= 25.ab6 ab6 26.Nd7 Rd7 27.Rg2 c5 28.Bf5 ef5 29.Rga2 Rc8 30.Ra1 cd4 31.Ra8 Ra8 32.Ra8 Kh7 33.cd4 Qb4 34.Qb4+/– Nb4 35.Rc8 Ra7 36.Rc4 Ra1 37.Ke2 Ra2 38.Nd2 Rb2 39.Rc7+/– Kg6 40.h4 Ra2 41.Rb7 Nd5 42.Rd7 Nc3 43.Kd3 Na4 44.Ke3 Ra3+= 45.Kf2 b5 46.h5 Kh5 47.Rf7 Ra2 48.Ke2 g6 49.Rc7 Ra3 50.e6 Nc3 51.Ke1 Nd5 52.Rc5 Nf6 53.Nf1 Rd3 54.Rb5+/– Rd4 ½–½. Psion – Psion, 4 Min/Zug, 1990.

4.f3 Nd6 5.e4 e6 6.c4 Be7? (better is 6...a6+=) 7.c5+– Ne4 8.fe4 Bh4 9.g3 Bg5 10.Nf3 Bc1 11.Qc1 Nf6 12.Bd3 h5 13.0-0 Ng4 14.Qg5 Qg5 15.Ng5 0-0 16.Nd2 d6 17.c6 bc6 18.bc6 e5 19.d5 a5 20.a4 Ba6 (20...f6 21.Ne6 Be6 22.de6+–) 21.Bb5 (21.Ba6 Ra6 22.Rfb1 Rc8+–) 21...Ne3 22.Rfb1 Nc2 23.Ra2 Nd4 24.Ngf3 Nb5 25.ab5 Bc8 26.Rba1 f5 27.Ng5 f4 28.Ra5 Rb8 29.Ne6 Be6 30.de6 fg3 31.hg3 Rf6 32.e7 Re6 33.Ra8 Ra8 34.Ra8 Kh7 35.e8R Re8 36.Re8 (36.Re8 Kg6 37.b6 Kh6 38.bc7 h4 39.c8Q g5 40.Qe6 Kg7 41.Re7 Kf8 42.Qf7#) 1–0. elsh1403 – fiction, kurnik, 2012.

4.f3 Nef6 5.e4=.

4.f3 Nef6 5.g4 c6 6.bc6= dc6 7.e4 (7.Nh3=) 7...b6 (better is 7...e5!? 8.Ne2 Be6=) 8.Ne2+= Bb7 9.Nbc3 Rc8 (9...e6 10.Kf2+=) 10.Bg2 Rc7 (10...e6 11.g5 Nh5 12.0-0+/–) 11.0-0 (11.a4 Rd7 12.g5 Nh5+/–) 11...Rd7 12.g5 Nh5 13.f4 c5 (13...h6 14.g6 e6 15.gf7 Rf7 16.Qd3+–) 14.d5 e6 (14...h6 15.Qd3 hg5 16.fg5+–) 15.Qd3 (15.Bf3 g6 16.f5 Bg7+–) 15...c4 (15...g6 16.f5 c4 17.Qf3 Bc5 18.Kh1 ef5 19.ef5+–) 16.Qh3 (16.Qc4?! Bc5 17.Kh1 ed5 18.ed5 Ne7+/–) 16...Nf4 (16...Bc5 17.Kh1 ed5 18.Qh5 d4+–) 17.Nf4 e5 (17...Bc5 18.Kh1 e5 19.Nh5+–) 18.Ne6! fe6 19.Qe6 Ne7 (19...Re7 20.Qf5 Nf6 21.gf6 gf6 22.Qf6 Rg7 23.Qe5 Qe7 24.Qh5 Rg6+–) 20.Qf7# 1–0. pierre – xadgab, internet, 2009.

4.f3 Nef6 5.g4 d5 6.g5 (6.e4 de4 7.g5 Nd7=) 6...Nh5 (6...Nd7 7.e4=) 7.e3 (7.e4 h6 8.Bg2 e6=) 7...h6+= 8.f4? (better is 8.g6+=) 8...c6?? (8...hg5 9.Qf3 (9.fg5? Ng3 10.g6 fg6 11.hg3 Rh1–+) 9...gf4 10.ef4–+) 9.a4?? (better is 9.Qh5 Bf5+–) 9...f6?? (better is 9...hg5 10.Ne2 gf4 11.ef4 e5–+) 10.Qh5+– Kd7 11.Bh3 (11.Nf3 a6 12.bc6 bc6 13.Bh3 Kc7+–) 11...e6 12.Nf3 fg5 13.fg5 Qa5 14.Bd2 Qc7 15.gh6 gh6 16.Ne5 Ke7 17.Qf7 Kd6 18.Bb4 c5 19.Qf8 Qe7 20.Bc5 Kc7 21.Be7 Kb6 22.Qd8# (22.Bd8#) 1–0. doune – agock, internet, 2007.

4.f3 Ng5?? 5.e4 Nf6?? (better 5...e5 6.de5 Bc5+=) 6.Bg5+– h6 (6...d5 7.Nc3+–) 7.Be3 g5 (7...e6 8.Bd3+–) 8.Bd3 g4 9.Nd2 (9.Nc3 e6+–) 9...d5 (9...Rg8 10.f4+–) 10.e5 Nh5 (10...Nd7 11.Ne2 gf3 12.Nf3+–) 11.Ne2 (11.fg4!? Ng7+–) 11...gf3 (11...Ng7 12.0-0 Nf5 13.Bf4+–) 12.Nf3 f5 (12...Rg8 13.0-0+–) 13.0-0 (better 13.ef6 Rg8 14.f7 Kf7 15.Ne5 Ke8 16.Nf4+–) 13...f4 (13...e6+–) 14.Bg6 Kd7 15.Bh5 (better 15.e6 Kd6 16.Nf4 c6+–) 15...fe3 16.Qd3 (better 16.e6!? Kd6 17.Qe1 Be6+–) 16...e6 (16...c6 17.bc6 bc6 18.e6 Kc7 19.Ne5+–) 17.Nf4 Rg8 (17...c6 18.Bg4 Kc7 19.bc6 bc6 20.Be6+–) 18.Bf7 (18.Nd5 Be7 19.Qh7 Rg2 20.Kg2+–) 18...Ba3 19.Be6 Ke7 20.Qh7 Kf8 (20...Rg7 21.Qg7 Ke8 22.Qf7) 21.Qf7 1–0. UncleBulgaria (2405) – flyingscotsman39, ChessWorld.net, 2015.

4.f3 Ng5?? 5.Bg5+– f6 6.Bc1 d5 7.e4 +–.

4.f3 Ng5?? 5.Bg5+– f6 6.Bc1 g5 7.e4 c6 8.f4 cb5 (8...h5+–) 9.Qh5# 1–0. Fritz 8 – NN, 2003.

4.f3 Ng5?? 5.Bg5+– f6 6.Bf4 g5 (6...d5 7.Nd2+–) 7.Bg3 a6 (7...d6 8.e4+–) 8.e4 (8.ba6 b6+–) 8...d5 (8...ab5 9.Bb5 h5 10.h4+–) 9.ba6 b6 (9...ba6 10.ed5 Qd5 11.Bc7+–) 10.Bb5 Bd7 11.Bd7 Qd7 12.ed5 Qd5 13.Bc7 Ra6 14.Qe2 Ra7 15.Bb6 Ra2 16.Ra2 Qa2 17.Nc3 Qa1 18.Nd1 Qb1 19.Bc5 Qc1 20.Qb5 Kf7 21.Qb3 Kg7 22.Ne2 Qa1 23.Ng3 Kh6 24.Qf7 Qa5 25.c3 e6 26.Bf8 1–0. Rosner,Dirk – Klink, Riepe–Einladungsturnier, 1999.

3.d4 Ne6

4.Bb2 c6 5.a4 b6 (5...Nf6!?=) 6.e3 Bb7 (6...Nf6 7.Nf3+=) 7.Nf3+– Nc7 (7...cb5 8.ab5 Nf6 9.c4+=) 8.Bd3 e6 9.0-0 d5 (9...Nf6 10.c4+–) 10.bc6+– Bc6 11.Ne5 Bd7 12.c4 (12.Nd2 Nf6+–) 12...dc4 13.Be4 (13.Nc4!? Nf6+–) 13...f6?? (better 13...Nd5 14.Qf3 Ngf6+–) 14.Qh5 (14.Qh5 g6 15.Bg6 hg6 16.Qg6 Ke7 17.Ba3) 1–0. Massudy (2205) – GranAL (2185), lichess.org Rated Rapid game, 2020.

4.Nc3 Nd4? (better is 4...d5=) 5.Qd4+– Nh6?? (5...d6+–) 6.Bh6 Rg8 7.Bd2 g5 8.0-0-0 (8.Qd3 h6+–) 8...Bg7 (8...a6 9.ba6 Ra6 10.e4+–) 9.Qd3 Rb8 10.Qh7 Bf8 11.Qg8 b6 12.Bg5 c5 13.Bh6 e6 14.Qf8 1–0. Trkn – Sage Dreamsbane, Casual Game, 2001.

4.c4 c6 5.Nc3 Nf6 6.e4 d6 7.Bd3 (7.bc6 bc6 8.Nf3 Rb8+=) 7...g6 (7...Nd4 8.Nge2 Ne2 9.Ne2+=) 8.Bb2 (8.Nf3 Bg7+=) 8...Bg7 (8...Nd4 9.Nge2 Ne2 10.Ne2 Bg7+=) 9.f4 (better is 9.Nge2+=) 9...Nf4–/+ 10.Bc2? (10.Qd2 Nd3 11.Qd3 cb5 12.Nb5 a6–/+) 10...0-0?? (better is 10...Ng2 11.Kd2 Bh6 12.Kd3 Ng4–+) 11.Qd2–/+ e5 12.g3 (12.Nf3 ed4 13.Nd4 Ne6–/+) 12...N4h5 (12...Ne6 13.de5 de5 14.Nf3–/+) 13.Nf3 ed4 14.Nd4 Re8 15.0-0 c5 16.Nf3 Be6 17.Nd5 Bd5 18.ed5+= Qd7 19.Ng5 Ng4 20.Bg7 Ng7 21.Rf7 Re7 22.Re7 Qe7 23.Re1 Qf6 24.Rf1 Qe5 25.Re1 Qd4 26.Qd4+= cd4 27.Re7 Ne3 28.Bd3+/– h6 29.Ne4 Ngf5 30.Nf6 Kf8 31.Rb7 Ne7 32.Nd7 Kf7 0–1. Djakov,Joao – Redgrave,John (1790), internet Section, 2004.

4.c4 Nf6 5.Nf3=.

4.c4 g6 5.Nf3 Bg7 6.Bb2 (6.e4 c5 7.bc6 dc6=) 6...c5 (6...a6 7.Qa4=) 7.e3 b6 (7...d6 8.Bd3=) 8.Qd2 (8.Be2 d5+=) 8...cd4 9.Nd4 Nd4 10.Bd4 Bd4 (10...e5 11.Bc3 d6 12.Qd5+=) 11.Qd4 (11.ed4 Bb7+=) 11...Nf6 12.Nc3 Bb7 13.Nd5 Bd5 14.cd5 Qc7 15.Bd3 0-0 (15...Qd6 16.e4+=) 16.d6 Qd6 17.Qd6 ed6 18.Kd2 (18.h3 Rac8+=) 18...Rfc8 19.a4 (19.Rhc1 d5+=) 19...Kf8 (19...d5 20.Ke2=) 20.a5+= Ke7 (20...d5 21.Ke2+=) 21.Ra4 Rab8 22.ab6 ab6 23.g4 (23.Rha1 Rc5+=) 23...Rc5 24.h4 h6 25.Rg1 d5 26.f3 (26.g5 Ng8+=) 26...Ne8 27.e4 (better is 27.Rh1!?=) 27...Nc7–/+ 28.g5 (28.Re1 Nb5 29.ed5 Kd8 30.Bb5 Rb5–/+) 28...hg5 29.Rg5 de4 (29...Rh8 30.ed5 Nd5 31.Re4 Kd6 32.Bc4–/+) 30.Re4 (30.fe4 Rg5 31.hg5 Ne6–/+) 30...Ne6–/+ 31.Rg1 (31.Re2!?–/+) 31...Ra8–+ 32.Rb1 (32.Rgg4 f5 33.Ra4 fg4 34.Ra8 gf3–+) 32...d5 (32...Ra2 33.Ke1–+) 33.Reb4 Kd6 34.R1b2 d4 (34...Ra3 35.Rg4–+) 35.Bc4 Ke5 36.Rb1 Rd8 37.Re1 Kf6 38.Re4 Re5 (38...Ng7 39.Ra4–/+) 39.Rb1 (39.Rg4 Ng7–+) 39...Re4–+ 40.fe4 Ke5 41.Rf1 Rd7 42.h5 (42.Be6 Ke6 43.Kd3 f6–/+) 42...Ng5 43.Kd3 Ra7 44.Bb3? (better is 44.h6–/+) 44...Ra3–+ (44...Ne4?! 45.Re1 f5 46.hg6–/+) 45.Kc2 d3 (better is 45...Ne4!? 46.Rh1 gh5 47.Rh5 f5 48.Rh3–+) 46.Kb2 Ra5 47.Bf7 Nf7 48.Rf7 gh5 49.Rf5 Ke4 50.Rh5 Ra8 (better is 50...d2!? 51.Kc2 Ra2 52.Kd1 Kd3 53.Rh3 Kc4–+) 51.Rh6–/+ Ke3 (51...Rd8 52.Rb6 d2 53.Re6 Kf5 54.Rc6–+) 52.Re6=+ Kd2 53.Rb6 Kd1 54.Re6 d2 ½–½. Andersson,Lars H – Korning,Peter, corr SSKK M–195, 1995.

4.c4 g6 5.Nf3 Bg7 6.Bb2 (6.e4 c5 7.bc6 dc6=) 6...c5 (6...a6 7.Qa4=) 7.e3 b6 (7...d6 8.Bd3=) 8.Qd2 (8.Be2 d5+=) 8...cd4 9.Nd4 Nd4 10.Bd4 Bd4 (10...e5 11.Bc3 d6 12.Qd5+=) 11.Qd4 (11.ed4 Bb7+=) 11...Nf6 12.Nc3 Bb7 13.Nd5 Bd5 14.cd5 Qc7 15.Bd3 0-0 (15...Qd6 16.e4+=) 16.d6 Qd6 17.Qd6 ed6 18.Kd2 (18.h3 Rac8+=) 18...Rfc8 19.a4 (19.Rhc1 d5+=) 19...Kf8 (19...d5 20.Ke2=) 20.a5+= Ke7 (20...d5 21.Ke2+=) 21.Ra4 Rab8 22.ab6 ab6 23.g4 (23.Rha1 Rc5+=) 23...Rc5 24.h4 h6 25.Rg1 d5 26.f3 (26.g5 Ng8+=) 26...Ne8 27.e4 (better is 27.Rh1!?=) 27...Nc7–/+ 28.g5 (28.Re1 Nb5 29.ed5 Kd8 30.Bb5 Rb5–/+) 28...hg5 29.Rg5 de4 (29...Rh8 30.ed5 Nd5 31.Re4 Kd6 32.Bc4–/+) 30.Re4 (30.fe4 Rg5 31.hg5 Ne6–/+) 30...Ne6–/+ 31.Rg1 (31.Re2!?–/+) 31...Ra8–+ 32.Rb1 (32.Rgg4 f5 33.Ra4 fg4 34.Ra8 gf3–+) 32...d5 (32...Ra2 33.Ke1–+) 33.Reb4 Kd6 34.R1b2 d4 (34...Ra3 35.Rg4–+) 35.Bc4 Ke5 36.Rb1 Rd8 37.Re1 Kf6 38.Re4 Re5 (38...Ng7 39.Ra4–/+) 39.Rb1 (39.Rg4 Ng7–+) 39...Re4–+ 40.fe4 Ke5 41.Rf1 Rd7 42.h5 (42.Be6 Ke6 43.Kd3 f6–/+) 42...Ng5 43.Kd3 Ra7 44.Bb3? (better is 44.h6–/+) 44...Ra3–+ (44...Ne4?! 45.Re1 f5 46.hg6–/+) 45.Kc2 d3 (better is 45...Ne4!? 46.Rh1 gh5 47.Rh5 f5 48.Rh3–+) 46.Kb2 Ra5 47.Bf7 Nf7 48.Rf7 gh5 49.Rf5 Ke4 50.Rh5 Ra8 (better is 50...d2!? 51.Kc2 Ra2 52.Kd1 Kd3 53.Rh3 Kc4–+) 51.Rh6–/+ Ke3 (51...Rd8 52.Rb6 d2 53.Re6 Kf5 54.Rc6–+) 52.Re6=+ Kd2 53.Rb6 Kd1 54.Re6 d2 ½–½. Andersson,Lars H – Korning,Peter, corr SSKK M–195, 1995.

4.d5 Nc5 5.Be3 b6 (5...e6 6.Nc3+=) 6.g3 Bb7 7.c4 e6 8.Bg2 Nf6 9.Nh3 d6 (9...ed5!? 10.cd5 a6+=) 10.0-0 Be7 (10...ed5 11.cd5 a6 12.ba6 Ra6 13.Nc3=) 11.de6 (better is 11.Bc5!? dc5 12.de6 Bg2 13.ef7 Kf7 14.Kg2+/–) 11...fe6= 12.Bc5 Bg2 13.Kg2 bc5 14.Nc3 0-0 15.e3 a6 16.a4 ab5 17.ab5 Qd7 18.Qf3?? (18.Ra8 Ra8 19.e4 Qc8=) 18...Rab8 (18...Ra1 19.Ra1 Nd5 20.Qf8 Kf8 21.cd5 ed5 22.Nd5 Qb5 23.Ra7–+) 19.Ra7 Nd5–/+ 20.Qe2? Nc3–+ 21.Qc2? Nb5! 22.cb5 Rb5 23.Rfa1 Bf6 24.R1a2 d5 25.Qa4 Rfb8 26.Ra8 Qe8 27.Nf4 Ra8 28.Qa8 Qa8 29.Ra8 Kf7 30.Ra7 Be5 31.Nd3 Bd6 32.f4 c4 33.Ne5 Ke7 34.Nc6 Kd7 35.Nd4 Rb2 36.Kf3 c3 37.Ra1 Bc5 38.Rc1 Bd4 39.ed4 c2 40.Ke2 Kd6 41.Kd3 c5 42.dc5 Kc5 43.Rc2 Rc2 44.Kc2 Kd4 45.Kd2 h6 46.h3 g5 47.fg5 hg5 48.Ke2 Ke4 (48...Ke4 49.Kf2 Kd3–+) 0–1. mete61 – bentwhistle, kurnik, 2012.

4.d5 Nc5 5.Nf3 e6=.

4.d5 Ng5?? 5.Bg5+– c6 6.bc6 bc6 7.dc6 dc6 8.Qd8 Kd8 9.Nc3 f6 10.0-0-0 Kc7 11.Bf4 Kb6 12.e4 g6 13.Be3 Kb7 14.Nf3 Bh6 15.Bh6 Nh6 16.Nd4 Rd8 17.Be2 c5 18.Ndb5 Rd1 19.Rd1 Be6 20.Na4 Ka6 21.Nc5 Ka5 22.Nb3 Kb4 23.c3 Ka4 24.Rd4 Bc4 25.Bc4 Rb8 26.Nc5 Ka5+– 27.Nb3 (27.Nb3 Ka4 28.Bd3#) 1–0. iczker – karpiak, kurnik, 2012.

4.e3 d6 5.Nc3 Nf6 6.Bd3 g6 7.f4 c5 8.bc6 bc6 9.Rb1 Bg7 10.Nf3 0-0 11.0-0 Nc7 12.e4 Nd7 (12...Bg4 13.Be3+=) 13.Be3 Ba6 14.a3 c5 15.f5 cd4 16.Bd4 Nc5 17.Bg7 Kg7 18.Ba6 N7a6 19.Nd5 Ne4 20.Qd4 Nf6 21.Rb7 (21.Rb7 Qc8 22.Re7+/–) 1–0. pierred (2825) – ecluschei (2600), net–chess.com, 2015.

4.e3 Nf6 5.Nf3 g6 6.c4 d6 7.Nc3 Bg7 8.Rb1 0-0 9.Be2 (9.Bd3 a6=) 9...Nd7 (9...a6 10.0-0=) 10.Bb2 (10.0-0 a6+=) 10...f5 (10...a6 11.ba6 Ra6 12.0-0+=) 11.g3 (11.0-0 a6+=) 11...Nf6 12.Qb3 c5 13.d5 Nc7 14.0-0 b6 15.Rfd1 Qe8 (15...Qd7 16.a4+=) 16.Rd2 (16.a3 Bd7+=) 16...Bb7 17.Rbd1 (17.a4 Qd7=) 17...Rb8 (17...a6 18.ba6 Ra6 19.h3=) 18.h4 a6 19.a4 a5 20.Ng5 (20.Qc2 Ne4 21.Ne4 fe4 22.Bg7 Kg7+/–) 20...Bc8 (20...h6 21.Nf3=) 21.Bf3 (21.Bd3 h6 22.Nf3 Qf7=) 21...h6 (21...Qd7 22.Qc2+=) 22.Nh3+= Qf7 23.Qc2 (23.Nf4 Bd7+=) 23...Bd7 (23...Ne4 24.Rd3=) 24.Kg2 (24.Nf4 Rbe8+=) 24...Rbd8 25.Ne2 Ng4 (25...Ne4 26.Bg7 Qg7 27.Rd3+=) 26.Bg7+= Qg7 27.Bg4 (27.Kg1!?+=) 27...fg4= 28.Nhf4 Rf5 (28...Rf6 29.h5=) 29.Nc3 Rdf8 30.e4 Re5 31.Re1 g5 (31...Qf6 32.Qd3=+) 32.Nd3+= gh4 33.Ne5 h3 34.Kh2 Qe5 35.Nd1 Rf3 36.Rd3 Ne8 (better is 36...Rf8!?+=) 37.Rf3+– gf3 38.Qc3 (38.Qd3 Bg4+–) 38...Bg4 (better is 38...Qc3!? 39.Nc3 Nf6+/–) 39.Qe5 de5 40.Ne3 (40.Nb2 Nd6+/–) 40...h5 41.Nf1 Nd6 42.Nd2 Nf7 (42...e6!?+/–) 43.Re3+– Ng5 44.Rd3 Kf8 45.d6 Ke8 46.de7 (46.Rd5!? Nf7 47.d7 Kd8 48.Rd3+–) 46...Ke7+= 47.Rd5 (47…Nf7 48.Nb3+=; 47.Kh1 Be6+=) Diener,Rudolf – Dege, corr ICCF WT–M–742, 1998.

4.e4 c5 5.d5 Nc7 6.c4 (6.Nc3 g6+=) 6...d6 7.Bd3 e5 (7...g6 8.Bb2 Nf6 9.Bf6 ef6 10.Ne2+=) 8.de6 Ne6 9.Bb2 (9.Nc3 Be7+=) 9...Be7 (9...Nf4 10.Bf1+=) 10.Nc3 (10.Nf3 Bf6 11.Nc3 Nf4+=) 10...Bf6 (10...Nf4 11.Nd5 Bf6 12.Bf6 Nd3 13.Qd3 Nf6 14.Nf3+=) 11.Nge2 (11.Nf3 Ne7+=) 11...Ne7 12.0-0 Nd4 (12...0-0 13.Qd2+=) 13.Nf4 (13.Nd4 Bd4 14.a4 0-0+=) 13...g6 (13...0-0 14.Nfd5 Nd5 15.Nd5+=) 14.Kh1 (14.Ncd5 Be5+/–) 14...Ne6 (14...0-0 15.Nfd5 Be5 16.f4+=) 15.Nfe2 (15.Nfd5 Nd5 16.ed5 Nf4+=) 15...0-0+= 16.f4 (16.Qd2+=) 16...Ng7 (16...a6!?+=) 17.e5+/– de5 18.Ne4 Nef5 19.Nf6 (19.fe5 Bg5 20.Nf6 Kh8+/–) 19...Qf6 20.fe5 Qh4 (20...Qg5 21.Rf3+/–) 21.Rf3 (21.Qa4 Be6 22.Kg1 Ne3+=) 21...Be6+= 22.Qc2 Rfd8 23.Be4 Rd7 24.Raf1 Rad8 25.Bc1 b6 26.Rf4 Qe7 27.Qa4 Nd4 28.Nc3 Bf5 29.Bf5 Ndf5 30.Nd5 Qe5 31.Re4 Qa1 32.Rfe1+– Ne6 33.Bg5 Ng5 34.Ra1 Ne4 35.Re1 Nf2? 36.Kg1+– Nd3 37.Re4 Nb2? 38.Qc2 Nc4 39.Nf6 Kg7 40.Nd7 (40...Rd7 41.Rc4+–) 1–0. West,Guy (2370) – Mortensen,Henrik (2085), Canberra Australian Open, 2001.

4.e4 c6+=.

4.e4 d5 5.Be3 c6 6.bc6 bc6 (6...de4?? 7.cb7 Rb8 8.bc8N Qc8 9.c4+–) 7.ed5 (7.Bd3 de4 8.Be4 Qd6+=) 7...cd5 8.Bb5 (8.c4 Nf6+=) 8...Bd7= 9.Bd7 (9.Bd3 Rb8=) 9...Qd7 10.Nf3 Qb5 (10...Rc8 11.Qd3=) 11.a4 (11.Nbd2 Nf6+=) 11...Qa6 (11...Qb4 12.Nbd2=) 12.Nc3 (12.Ne5 Nf6+=) 12...Nf6= 13.Nb5 Qc8 (13...Qb6 14.0-0=) 14.0-0 a6 15.Na3 g6 16.c4 Bg7 (16...dc4 17.Rc1+=) 17.c5 (17.Rc1 Qb7+=) 17...0-0 18.Rb1 Rd8 (18...Rb8 19.Qd3+=) 19.Qb3 Rb8 20.Qb8 Qb8 21.Rb8 Rb8 22.Rb1 Rb1 23.Nb1 Ne4 24.c6 Kf8 (24...f5 25.g3=) 25.Na3 (25.Kf1 Ke8=) 25...Ke8 26.Nc2 Nc3 27.Nb4 Bd4 (27...a5 28.Nc2=) 28.Nd4 (< 28.Na6 Be3 29.fe3 Na4=+) 28...Nd4 29.Bd4 Ne2 30.Kf1 Nd4 ½–½. pcmvr – marekt, internet, 2005.

4.e4 d5 5.e5 g6 +=.

4.e4 d6 5.f4 c5 (5...g6 6.Bc4= Nf6 7.d5 Nc5 8.e5 Nfd7 9.Qe2 Nb6 10.Bb2 Bg7 11.Bd4 g5=) 6.d5 (6.bc6 bc6 7.Nf3 Nf6 8.Bd3 g6 9.0-0 Bh6 10.g3 Bg7 11.e5 Nd7=; 6.f5 Nc7 7.dc5 e6 8.Nf3 ef5 9.b6 Ne6 10.ef5 Nc5 11.Bb5 Bd7=) 6...Nc7 7.Bb2 (7.Nc3 g6+= 8.Nf3 Bg7 9.Bb2 Nf6 10.Bd3 0-0 11.Rb1 e6+=; 7.Nf3 e6 8.de6 Be6 9.f5 Bc8 10.Bc4 d5 11.ed5 Bf5+=) 7...Nf6 (7...e5 A) worse is 8.fe5 Qh4 9.Kd2 Qf4 10.Kd3 (10.Ke1 Qe4 11.Qe2 Qe2 12.Be2 de5–/+) 10...c4 11.Kc4 Qe4–/+; B) 8.Qf3= ef4 9.Qf4 Bd7 10.Nc3 a6 11.ba6 Na6+=) 8.Nd2 (8.Nc3 e5+= (8...g6 9.Bd3 Bg7 10.Nf3 0-0 11.Rb1 e6+=) 9.de6 Be6 10.f5 Bd7 11.Qe2 Be7=) 8...e6 9.de6 (9.c4 ed5 10.ed5 Be7 11.Bd3 Ng4=) 9...Ne6 10.Qf3 (10.f5 Nc7+= 11.c4 Be7+=) 10...Qe7 (10...d5 11.0-0-0 d4 12.Bc4=) 11.c4 (11.0-0-0 Nd4 12.Qd3 d5=) 11...Nd4 (11...a6!?=; 11...g6=) 12.Bd4+= cd4 13.Bd3 (13.Ne2 g6+=) 13...g6 (13...Bg4 14.Qg3=) 14.Ne2+= Bg7 15.h3 Nd7 16.0-0 Nc5 17.Rae1 0-0 18.Ng3 a6 19.b6 Qd8 20.f5 Be5 21.Bb1?? Qg5–+ 22.fg6 hg6 23.Nf5 Bf5 24.ef5 Qd2 25.fg6 fg6 26.Qg4 Qh6 27.Bg6 Bg7 28.Qg3 Rf1 29.Rf1 Qe3 30.Qe3 de3 31.g4? Rf8 32.Re1 Nd7 33.h4 Nb6 34.g5 Nc4 35.h5 Bd4 36.Be4 b5 37.g6 e2 38.Kh2 Rf2 39.Kh3 Kg7 (39...Kg7 40.Kg3 Nd2–+) 0–1. Larsen,Andreas – Mortensen,H (2015), Politiken Cup, Copenhagen DEN, 2004.

4.e4 g6 5.Be3 (5.d5 Bg7) 5...Bg7 6.c3 b6 (6..d6) 7.d5 Nc5 (7...Nf8) 8.Bd4 e5 (8...Nf6 9.e5 Nh5!? 10.Ne2 f5!) 9.Bc5 +=.

4.e4+= g6 5.Nf3 Bg7 6.Nc3 (6.Bc4 d6+=) 6...d6 (6...c5 7.bc6 dc6 8.e5=) 7.Bb2 (7.Bc4 Nf6 8.Qd3 c5+=) 7...Nf6= 8.Bc4 (8.Bd3 Nf4 9.0-0 Qd7=) 8...0-0 (8...Ne4 9.Be6 Nc3 10.Bf7 Kf7 11.Bc3=) 9.0-0 (9.e5 Nd7=) 9...Nf4 (9...Ne4 10.Ne4 d5 11.Bd3 de4 12.Be4=) 10.Ne2 (10.Bc1 N6h5+=) 10...Ne6 (10...d5 11.Nf4 dc4 12.Qe2=) 11.Qd3 d5 12.ed5 Nd5 13.Bd5 (13.Ne5 Nb6+=) 13...Qd5= 14.c4 Qd6 15.Qe3 (15.Ba3 Qd7+=) 15...Qb4= 16.Qc3 Qc3 17.Bc3 c6 18.a4 Rd8 Will d4 fall? 19.Rfd1 Bd7 20.Rab1 Rac8 21.bc6 (better is 21.b6!? a6 22.a5=) 21...Bc6+= (worse is 21...bc6 22.Ba5 Re8 23.Rb7+/–; 21...Rc6? 22.d5 (22.Rb7?! Rc4 23.Ra7 Ra4 24.Ra4 Ba4+=) 22...Rcc8 23.de6 Be6 24.Rd8 Rd8 25.Bg7 Kg7 26.c5+–) 22.d5 Ba4 23.Rd2 Nc5–/+ 24.Bg7 Kg7 25.Rd4 Kf8 26.Nd2 e5 27.Rh4 Bc2 28.Rb2 Bd3 29.Nc3 h5–/+ 30.f3 a5 31.Nce4–/+ Ne4 32.fe4 a4 33.Rh3 Bc4 34.Rb7 Ba6 35.Rb2 Rc1 36.Kf2 Rdc8 37.Ra3 R8c2 38.Rc2 Rc2 39.Ke1 Rc1 40.Kf2 Bb5 41.h3 Ke7 42.g3 Rh1 43.h4 f5 44.Kg2 Rd1 45.Ra2 fe4 46.Ne4 Rd5 47.Nc3 Bc6 48.Kf2 Rd4 49.Ke3 Ke6 50.Ne2 Rb4 51.Nc1 e4 52.Kf4 Bd5 53.Ra3 Kf6 54.Ne2 Bc6 55.Nc1 Rb2 56.Ke3 Rg2 (56...Rg2 57.Kd4 Kf5–+; 56...Ke5 57.Rc3 Bd5 58.Ne2–+) 0–1. Szytko,J – Ziolkowski,T (1800), corr, 1996.

4.Nf3 c5 5.d5 Nc7 6.c4 d6 7.e4 e5 8.de6 Be6 9.Nc3 Nf6 10.Be2 Be7 11.0-0 0-0 12.h3 (12.Qd3 Re8+=) 12...Nd7 (12...Re8 13.Qd3+=) 13.Bf4 (13.Nd5 Bf6 14.Nf6 Qf6+/–) 13...Nb6 (13...Bf6 14.Qc2 Ne5 15.Be5 de5 16.Rfd1+=) 14.Qb3 (14.Nd5 Bd5 15.cd5=) 14...f5= 15.ef5 Rf5 16.Bg3 Rf3 17.gf3 Bh3 18.Rfd1 h5? (better is 18...Qf8!?=) 19.Ne4+/– Qe8 20.Nd6 (20.Qe3!?+/–) 20...Bd6+= 21.Bd6 Qg6 22.Bg3 h4 23.Rd6 Ne6 (23...Qe8 24.Re1 hg3–+) 24.Qd3?? (24.Bd3 Qh5 25.Be4 hg3 26.Rd2–+) 24...Qd3 (24...Bf5 25.Re6 Qe6–+ (25...Bd3?! 26.Rg6 Bg6 27.Bh4+=)) 25.Bd3= (25.Rd3? hg3 26.fg3 Nd4–/+) 25...hg3 26.fg3 Nd4 27.Be4 (27.Kh2 Be6 28.Kg2–+) 27...Be6 (27...Re8 28.Bb7 Re2 29.Rd8 Kf7 30.Rh8–/+) 28.Bb7 Rf8 (28...Re8 29.Rd1–/+) 29.Bd5 (29.Re1 Bc4 30.Re7–/+) ½–½. Windelboe,Werner – Mortensen, Horsens, 1994.

4.Nf3 c5 5.d5 Nc7 6.c4 d6 7.e4 Nf6 8.Bd3 Bg4 9.0-0 e5 10.de6 Ne6 11.h3 Bf3 12.Qf3 (< 12.gf3 Nh5 13.b6 ab6–/+ (< 13...Qb6 14.Nc3+=)) 12...d5 (better is 12...Nd4 13.Qe3 Qe7+/–) 13.ed5+– Nd4 14.Re1 Be7 15.Qe3 0-0?? (better is 15...Kf8+–) 16.Qe7 Qe7 17.Re7 Rae8 18.Re8 Re8 19.Nc3 Re1 20.Kh2 g5 (20...Nd7 21.Bb2 Re7 22.Ne4+–) 21.Bb2 Ra1 22.Ba1 g4 (22...Nd7 23.Ne4 Kf8 24.Ng5+–) 23.Ne4 Ne4 24.Be4 gh3 25.Bh7! Kh7 26.Bd4 cd4 27.d6 d3 28.d7 d2 29.d8Q d1Q 30.Qd1 a5 31.gh3 f5 32.Qd7 Kg6 33.Qb7 f4 34.Qe4 Kg5 35.b6 a4 36.b7 a3 37.b8Q f3 38.Qg8 Kf6 39.Qgg6# 1–0. miehnekort – kdolla22, Yahoo, 2005.

4.Nf3 c5 5.d5 Nc7 6.c4 Nf6 7.e3 +=.

4.Nf3 d6 5.e4 c5 6.d5 Nc7 7.c4 e5 8.Bg5 Be7 9.Be7 Qe7 10.Qd2 Nf6 11.Nc3 0-0 12.Qg5 (12.Be2!?+=) 12...Bg4+= 13.Be2 Bf3 14.Bf3 Nfd5 15.Qe7 Ne7 16.Nd5 (16.0-0-0 Rad8–/+) 16...Ned5 17.ed5 f5 18.0-0 Ne8 19.a4 Nf6 20.h3 g5 21.a5 h5 Black prepares g4 22.Ra3 g4 23.Be2 f4 24.Bd1 Rae8 25.f3 gh3 26.Ra2 (26.gh3!? e4 27.fe4 Re4 28.a6–+) 26...hg2–+ 27.Rg2 Kf7 28.Kh2 Rg8 29.Rfg1 (29.Bc2 h4–+) 29...Rg2 30.Rg2 Rg8 31.Bc2 b6 32.ab6 ab6 33.Bf5 (33.Rf2–+) 33...Rg2 34.Kg2 Ne8 35.Kh3 (35.Kf2 Ng7 36.Bh3 Kf6–+) 35...Ng7 (35...Kf6 36.Bd3–+) 36.Bh7? (36.Bd3 Ke7 37.Kg2–+) 36...Kf6 37.Kh4 (37.Bd3 Nf5–+) 37...Nf5 38.Kh5 Ne3 39.Bd3 Nf5 (better is 39...e4 40.fe4 Ke5–+) 40.Kg4 Ne3 41.Kh4?? (41.Kh5 e4 42.fe4 Ke5–+) 41...Nf5 (better is 41...e4 42.Be4 Nc4–+) 42.Kh5?? (42.Kg4 Ng3 43.Kh3–+) 42...Ne3 ½–½. acaudron (2295) – ecluschei (2600), net–chess.com, 2015.

4.Nf3 Nf6 5.e3=.

4.Nf3 g6 5.d5 Nc5?? (5...Bg7 6.c3 Nc5 7.e3=) 6.Bb2?? (better is 6.Qd4 Nf6 7.Qc5+–) 6...Nf6= 7.c4 Bg7 8.g3 0-0 9.Bg2 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 c6 (12...d6 13.Bd4=) 13.0-0 (13.dc6!? bc6 14.bc6+=) 13...cd5= 14.cd5 d6 15.Nc3 b6 16.Qc2 Bb7 17.e4 Qa8 18.Bb2 Qb8 19.Nd2 Nfd7 20.Nc4 Ba8 21.Ra1 Bc3 22.Qc3+/– Nf6 23.Qe3 e5 24.f3 Qc7 25.Bf1 Nfd7 26.Qc3 f5+= 27.Nd2 fe4 28.Ne4 Bd5 29.Bc4 Ne4?? 30.Bd5+– (30.Bd5 Kg7 31.Qc7+–) 1–0. mete61 – bentwhistle, kurnik, 2012.

3.e3 e5

4.a4 b6 5.d4 ed4 6.ed4 Ne6 7.Ba3 Ba3 8.Ra3 d5 9.Nf3 Nf6 10.Ne5 Bb7 11.Be2 Qd6 12.Bh5 (12.0-0 0-0+=) 12...g6 (12...Nh5 13.Qh5 Qb4 14.Nd2–/+) 13.Bf3 0-0 14.0-0 Rfe8 15.c4 (better is 15.Re3!?+=) 15...Nd4+= (15...Nd4 16.Qd4 Re5=). Myrberg,Johnny – Goeransson, Haessleholm Sweden, 1989.

4.a4 d5 5.Bb2 e4 6.d4 +=.

4.Bb2 e4 5.Ne2=+.

4.c4 f5 5.Bb2 e4 6.Nh3 Nf6 7.Nf4 d6 8.h4 (8.d4 ed3 9.Bd3 Be7=) 8...Be7 9.Be2 (9.d4 ed3 10.h5 0-0=) 9...0-0 10.0-0 Bd7 (10...Ne6 11.Nd5=+) 11.a4 (11.d4 ed3 12.Nd3 Nfe4=+) 11...Ne6=+ 12.Ne6 Be6 13.g3 (13.d4 d5=+) 13...c6 (13...d5 14.d3–/+) 14.d3 ed3 (14...Rc8 15.h5=+) 15.Bd3 Ng4 16.Nd2 Bf6 17.Bf6 Qf6 18.Nf3 Rad8 (18...Ne5 19.Nd4=+) 19.Qe2 c5 (19...Ne5 20.Ng5=+) 20.Rad1 (20.Ng5 Ne5=) 20...Kh8 (20...Ne5 21.Ng5=) 21.Ng5 Bg8 (21...Ne5 22.Ne6 Qe6 23.a5=+) 22.Nh3 (22.Rd2 Ne5=) 22...d5 23.cd5 Bd5 24.Bc4 (24.Nf4 Bb3 25.Bc2 Qf7=) 24...Bc4 25.Qc4 b6 (25...Rc8 26.Qd5 b6 27.Qb7=) 26.Nf4 Ne5 (26...Rfe8 27.Qc2=) 27.Qe2 (27.Qe6 Nf3 28.Kg2 Nd2=) 27...c4 28.Kg2 (28.Rd4 Rc8=) 28...g6 (28...Qf7 29.Rd4=+) 29.Rd4= Qf7 30.Rfd1 Rc8 31.Rd5 Rfe8 (31...Nd3 32.Qc2=) 32.Qc2 (32.Qb2 Qb7+=) 32...Qg7 (32...Nd3 33.Rd4 Nf4 34.Rf4+=) 33.Qc3+= Rc7? (33...Kg8 34.Rd6=) 34.R1d4 (better 34.Ne6! Re6 35.Rd8 Qg8 36.Rg8 Kg8 37.Rd8 Kf7 38.f4+–) 34...Rce7 35.Rd6 h6? (35...Nf7 36.Rc6 Ne5 37.Ne6+–) 36.Nd5 (better 36.h5!? g5 37.Ng6 Kh7 38.Ne7 Qe7 39.Qc2+–) 36...Rf7 (36...Re6 37.Re6 Re6 38.h5+–) 37.Rd2 (37.f4 Ng4+–) 37...g5 (37...Kh7 38.h5 gh5 39.Rd4+=) 38.hg5+– hg5 39.Qd4 (39.f4 Ng4 40.Qc4+–) 39...Ng4? (39...Kg8 40.Rc2+=) 40.Qg7 (better 40.Qc4!? Ne5 41.Qb4+–) 40...Kg7+= 41.Nc3 (41.Rd4 Re4+=) 41...f4 (41...Ne5!?=) 42.ef4 gf4 43.gf4 Rf4 (better 43...Kf8!?+–) 44.Kg3+– Ref8 45.Ne4?? (45.Ne2 Rf2 46.Kg4+–) 45...Ne5–+ The mate threat is Rg4 (45...Re4?! 46.f3 Re3 47.Rd7 Kg6 48.Kg4 Rff3 49.Ra7=+) 46.Rd7? (better 46.f3 Rf3 47.Kg2–+) 46...Nd7 47.Rd7 R8f7 (better 47...Kg6 48.Rd4 c3–+) 48.Nd6?? (48.Rf7 Rf7 49.Kg4–+) 48...Rd7 49.Kf4 Rd6 50.Ke5 Rc6 (50...Rd1 51.a5–+) 51.f4 (better 51.bc6 c3 52.c7+–) 51...Rc5–+ 52.Ke6 c3 53.f5 (53.a5 c2 54.Ke7 c1Q 55.f5 Qe3 56.Kd7 Qd4 57.Ke7 Re5) 53...c2 54.f6 (54.Ke7 c1Q 55.f6 Kg6 56.f7 Qe3 57.Kd6 Kf7 58.a5 Qd3) 54...Kf8 55.f7 (55.a5 c1Q 56.ab6 Qc4 57.Kd6 Qd5) 55...c1Q 56.Kd6 Qc4 57.Kd7 (57.a5 Qd5) 57...Qd4 (57...Qd5) 58.Ke6 Re5 59.Kf6 Qf4 (59...Qd6) 60.Kg6 Rg5 61.Kh6 (61.Kh7 Qh4) 61…Qh4 0–1. BeepBeepImAJeep (2540) – opperwezen (2465), lichess.org, 2017.

4.d4 ed4 5.ed4 Ne4=.

4.Bb2 d6

5.a4 Nf6 6.Nf3 Be7 7.Be2=.

5.a4 Nf6 6.Nf3 Bg4 7.Be2 Be7 8.0-0 0-0 9.d4 ed4 10.Nd4 Be2 11.Qe2 Qd7 12.Nd2 a6 (12...Rfe8 13.Qf3=) 13.e4 (13.Qf3 d5+=) 13...ab5 14.ab5 Na4 15.Rab1 (15.Ba3 Rfe8=) 15...Nb2 16.Rb2 Ra4 17.Nf5 Re8 18.Qd3 (18.c4 Qe6=) 18...Bf8 (18...Ne4 19.Nh6 gh6 20.Ne4=+) 19.c4= Ne4 (19...g6 20.Ne3=) 20.Ne4 (better is 20.Nh6! gh6 21.Ne4=) 20...Qf5–/+ 21.Re2 Rea8 22.Qd4? (22.Re3 Ra3 23.Qd2 Re3 24.Qe3 d5–/+) 22...Qe5 (22...Qb5 23.Nd2–+) 23.Qe5 (23.Qd5 Qd5 24.cd5 R4a5–/+) 23...de5–+ 24.Rc2 Rd8 (24...c6 25.bc6 bc6 26.g4–/+) 25.Rd2 (25.Rb1 Rd4 26.Nd2 f6–/+) 25...Rd2 26.Nd2 Bc5 (27.Rd1 f5–+; 26...g6 27.Rd1–+) 0–1. Curado – Wiker, corr S–P, 1992.

5.c3 e4 6.c4 =+.

5.c3 Nf6 6.d4 Ncd7 7.de5 (7.c4 Be7=+) 7...de5 (7...Ne5 8.Be2=+) 8.Nf3 e4 9.Nfd2 (9.Nd4 Nc5=) 9...Ne5 (9...Nc5 10.c4–/+) 10.c4=+ Bd6?? (10...Bg4 11.Qb3 Ned7 12.Bd4=+) 11.Nc3?? (better is 11.c5+–) 11...Bb4 (11...Bg4 12.Qa4 Nd3 13.Bd3 ed3 14.Nd5=) 12.Be2 (12.Nde4 Ne4 13.Qd8 Kd8 14.0-0-0 Nd6=+) 12...Nd3 (12...Bg4 13.0-0 Nd3 14.Bg4 Nb2 15.Qb1 Bc3 16.Ne4 Ng4 17.Nc3–+) 13.Bd3=+ ed3 (13...Qd3 14.Qb3 Qd6 15.0-0-0=) 14.0-0 (14.a3 Be7=) 14...0-0=+ 15.Nce4 Ne4 16.Ne4 Re8 17.Qb3 Re4 18.Qb4 Be6 (18...Qg5 19.Rfd1 Be6 20.Bd4=) 19.Bd4= Rg4 (19...Rd4 20.ed4 Qd4 21.Qa5=+) 20.Rad1 (20.Rfd1 Bf5=) 20...Bf5 (20...Rd4 21.ed4 Qd4 22.a4=) 21.Rd2+= a6 22.ba6 ba6 (22...Ra6 23.f3 (23.Qb7?? Be4 24.f3 Bb7 25.fg4 Be4–+) 23...Rd4 24.ed4 Qd4 25.Kh1+=) 23.Qc3+= c5 (23...Rg6 24.f3+=) 24.Bc5+/– Qc7 25.Bd4 Rc8 (25...f6 26.f3 Rh4 27.g3+–) 26.f3 Rg6 (26...Rh4 27.g4 Bg6 28.c5+/–) 27.Rc1 (27.c5 Re8+–) 27...Rh6 28.g3 Rg6 (28...Rc6 29.c5+– (29.Bg7?! Rc4 30.Qc4 Qc4 31.Rc4 Rc4=)) 29.c5 Bh3 (29...Rc6 30.e4 (30.Bg7?! Rc5 31.Qc5 Qc5 32.Rc5 Rc5+=) 30...Be6 31.Qd3+–) 30.Be5 (30.Qd3 Rc6+–) 30...Qc6 (30...Qe7 31.e4+–) 31.e4 (31.Rd3?! Qf3 32.Rd2 Rgc6+/–) 31...f6 (31...f5 32.Qc4 Re6 33.Rd3+–) 32.Bd6 Be6 33.Rd3 (33.Qd3 Qa4+–) 33...f5 34.ef5 Bf5 35.Re3 (35.Rd2 Re6+–) 35...Be6 36.Rc2 Rf6 (37.Qd4 Bd5+–; 36...Bd5 37.Qd3+–). Friberger,Torbjoern – Bendig,Frank, corr 3GMM–36, 1997.

5.Nc3 Nf6=.

5.d4 Na4 6.Ba3 e4 =+.

2.c3 c5

3.a3 d6 4.b5 Nc7 5.c4 a6 6.b6 Ne6+= 7.Qa4 Bd7–/+ 8.Qb3 Nd4 9.Qb2 Ba4–+ 10.Ra2? Bb3 11.e3 Ba2 12.Qa2 Qb6?? 13.ed4= cd4 14.Bd3 e5 15.Nf3 Be7 16.0-0 Nf6 17.Re1 Ng4 18.Rf1 a5 19.Bf5 Nh6 20.Bd3 0-0 21.Re1 Rfe8 22.Be4 f5?? 23.Bd5 Kh8+= 24.d3 Ng4 25.Qb2 Qb2= 26.Bb2 Rab8 27.Be6 g6 28.Nbd2 Bf8 29.Bd5 Nf6–/+ 30.Rc1 Bh6 31.a4 Re7 32.Ba3+= Rd8 33.Rb1 e4 34.de4 Bd2 35.Nd2+/– fe4 36.Bb7 e3? 37.fe3+– de3 38.Nf3?? Rb8= 39.Bd6?? Reb7 40.Re1 Re8 41.Ne5?? Ne4–+ 42.Re3 Nd6 43.c5–+ Rb1 44.Kf2 Rf8 45.Rf3 Ne4 46.Ke2 Rf3 47.Kf3 Nc5 48.Nc4 Nb7 49.Nd2 Rb4 50.Ke3 Ra4 51.Kd3 Nc5 52.Kc3 Ne4 53.Kb3 Rb4 54.Ka3 Nd2 55.g3 Nc4 (55...Nc4 56.Ka2 Rb2 57.Ka1 a4 58.h3 a3 59.g4 Na5 60.g5 Nb3#; 55...Nb1 56.Ka2 a4 57.Ka1 Nc3 58.h3 Rb1#) 0–1. novice1234 – Meggy, ChessWorld.net, 2009.

3.Qa4?! b5! 4.Qb5 Rb8.

3.bc5!? Nc5 4.d4 +=.

3.e4 cb4 4.Ba6 ba6 5.cb4 a5=.

3.b5 Nc7

4.a4 b6 5.c4 (5.e4 Bb7=) 5...e5 (5...d5 6.cd5 Nd5 7.e4=+) 6.Bb2 d6 7.Nc3 f5 8.e3 Bb7 9.d4 Qe7 10.d5+= Nf6 11.a5 Qd8 12.ab6 ab6+= 13.Ra8 Qa8 14.Qa4 Qa4 15.Na4 Nd7 16.Bd3 g6 17.Ne2 Bg7 18.Nec3 0-0 19.e4+= ½–½. Nielsen,Poul Steen – Mortensen,Henrik (2095), Obro Nytaar op, 1996.

4.a4 e5 5.d4 ed4 6.cd4 cd4 7.Qd4 =+.

4.e3 d5 5.Bb2 e5 6.d4 e4 7.c4 Nf6 8.Nc3 Be6 9.Qb3 Be7 10.cd5 Ncd5 11.Nd5 Bd5 12.Bc4 0-0 13.Ne2 a6 14.Bd5 Nd5 15.0-0 Rc8 16.dc5 Rc5 17.ba6 ba6 18.a4 Qb8–/+ 19.Qb8 Rb8 20.Ba3 Rc2 21.Be7 Re2–/+ 22.Rab1 Rb1 23.Rb1 h6 24.Kf1 Ra2 25.Bd6 Ra4 26.Rc1 Ra2 27.Rc8 Kh7 28.Rc5 Nf6 29.h3 a5 30.Rc4 Kg6 31.Be5 Nh7 32.Re4 Kf5 33.Rf4 Ke5 34.Rf7 a4 35.Rg7 Nf6 36.g4 a3 37.g5 hg5 38.Rg5 Ke4 39.Ra5 Nd5 40.Kg2? Ne3 41.Kg3 Nf5 42.Kg4 Nd4 43.Kg3 Ra1 44.Kg2 Kd3 45.h4 Ne6 46.h5 Nf4 47.Kf3 Ne6?? 48.Kg2 a2 49.h6 Nf8 50.Ra8 Nh7 51.Ra7 Ke2?? 52.Re7 Kd3?? 53.Rd7?? Kc4–+ 54.Rc7 Kd5 55.Rh7 Re1 56.Rd7 Ke6 57.h7?? a1Q 58.Ra7 Rg1 (59.Kf3 Qc3 60.Kf4 Qf6 61.Ke3 Re1 62.Kd2 Qf2 63.Kc3 Qe3 64.Kb4 Qd4 65.Kb3 Rb1 66.Kc2 Rb2 67.Kc1 Qd2#) 0–1. Zimmer,Georg – Bendig,Frank, corr SOK–91–75, 1991.

4.e3 d5 5.d4 c4 =+.

4.e4 d5=.

1...f6

2.a3 b5 3.e4 e5 4.Bb5 c6 5.Bd3 Qb6 (5...Ne7 6.Bb2+/–) 6.Nc3 c5 (better is 6...a5!? 7.b5 cb5 8.Bb5 Bc5 9.Qh5 g6+–) 7.Nd5 Qc6 8.b5 Qb7 9.Bc4 Bd6 (9...d6 10.Qh5 g6 11.Qf3+–) 10.Ne2 Ne7 (10...Bf8+–) 11.Ne7 Qe4 (11...Be7 12.Bd5 Nc6 13.bc6 dc6+–) 12.Bd5 Qg2 13.Bg2 (13...Be7 14.Ba8+–) 1–0. Marre – mcdog, zagraj.pl, 2003.

2.a3 c6 3.c3 (3.e4 e5+=) 3...e6 4.Bb2 Bd6 (4...d5 5.e3=) 5.e3 Qc7 (5...Bc7 6.Bd3=) 6.Nf3 Bf4?? (better is 6...Be7+=) 7.ef4+– Qf4 8.Be2 Qb4 (8...d6+–) 9.ab4 c5 10.bc5 d6 11.cd6 Ne7 12.de7 Ke7 13.0-0 Rd8 14.g3 Bd7 15.d4 Nc6 16.Re1 e5 17.de5 fe5 18.Ne5! Ne5 19.c4 Be6 20.Qc1 Rd3 21.Be5 Bc4 22.Bd3 Bd3 23.Nc3 Rf8 24.Ne4 Be4 25.Re4 Rf2 26.Bd4 (26.Bd4 Kf7 27.Qc7 Kg6 28.Qg7 Kf5 29.Qg4; 26.Qc7 Ke6 27.Bd4 Kf5 28.Qe5 Kg6 29.Qg7 Kf5 30.Qg4) 1–0. Fournier,Frederic (1920) – Borromeo, Active Blind, 2008.

2.a3 d5 (--> 1.b4 d5 2.a3 f6).

2.Ba3 d5 3.e3 c6 (3...e5 4.Nc3=+) 4.Qf3 (4.b5 Nh6=) 4...e5=+ 5.d3 d4 (5...Bd6 6.c4=+) 6.ed4= Bd7?? (better is 6...Qd4 7.c3 Qd8=) 7.de5+/– Na6 (7...a5 8.Qe3 Qe7 9.b5 Qe5 10.Qe5 fe5 11.Bf8 Kf8 12.Nf3+/–) 8.ef6 (better is 8.c3+–) 8...gf6?? (better is 8...Qf6 9.c3 0-0-0+/–) 9.Qh5+– Ke7 10.b5 Ke6 11.ba6 b6 12.Qg4 f5 13.Qe2 Kf7 14.Qh5 Ke6 15.Bb2 Nf6 16.Qe2 Kf7 17.Nh3 Bd6 18.Kd1 (18...Re8 19.Qf3+–) 1–0. nwishn (1900) – scmorgan, net–chess.com, 2006.

2.a4 d5 3.b5 (3.e4 e6+=) 3...e5 4.a5 (4.d4 Bd6+=) 4...Bd6 (4...a6 5.ba6 Na6 6.Nf3+=) 5.g3 (5.Nc3 Ne7+=) 5...Ne7 6.e3 Nd7 (6...0-0 7.Nc3–/+) 7.Qh5 (7.Ba3 Ba3 8.Na3 0-0–/+) 7...g6–/+ 8.Qh6 (8.Qe2 c6–/+) 8...Nf5 9.Qh3 b6 (9...Nc5 10.g4 Ne7 11.d4–/+) 10.c4 (10.Bg2 e4+=) 10...d4 (10...dc4 11.Qg2 Rb8 12.Bc4 ba5 13.Ra5–/+) 11.Bg2= Rb8 12.Bd5 Bb7 13.e4 Ne7 14.Qh6 Bd5–/+ 15.Qg7?? Rg8–+ 16.Qh7 Be4 17.f3 Bb1 18.Rb1 ba5 19.d3 Bb4 20.Ke2 Nf8 21.Qh4 Nf5 22.Qe4 Qd7 23.f4 Nd6 24.Qd5 Rg7 25.Bd2 ef4 26.Qd4 Re7 27.Kf3 Bd2 28.Qa7 Rb7 29.Qa8 Qd8 30.Qd8 Kd8 31.Rd1 Be3 32.Ra1 Bg1 33.Rhg1 fg3 34.hg3 Ra7 35.Kf4 g5 36.Kg4 Rh7 37.c5 Nb5 38.Kf5 Rh6 39.Rge1 Nd4 40.Ke4 Nc2 41.Kd5 Na1 42.Ra1 Rh3 43.g4 Rd3 44.Kc4 Rg3 45.Kb5 Rg4 46.Rd1 Kc8 47.Kc6 Ra6 48.Kd5 Re6 49.Rd4 c6 50.Kc4 Rd4 51.Kd4 g4 52.Kc4 Re4 53.Kd3 f5 54.Kd2 Ne6 55.Kd1 Nc5 (55...Nc5 56.Kc2 g3 57.Kd1 g2 58.Kc2 g1Q 59.Kb2 Qg2 60.Kc3 Na4 61.Kd3 Qe2) 0–1. ifairclough – quikeagle, net–chess.com, 2002.

2.Bb2 b5 (--> 1.b4 b5 2.Bb2 f6).

2.Bb2 c6 (--> 1.b4 c6 2.Bb2 f6).

2.Bb2 d5 3.Nf3 e5 4.b5 Be6 5.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3).

2.Bb2 e6 (--> 1.b4 e6 2.Bb2 f6).

2.Bb2 f5 3.e3 e5 (3...Nf6 4.Nc3+=) 4.Be5 (better 4.b5+–) 4...Kf7? (4...Nc6 5.Bb2+–) 5.Qh5 (better 5.Nc3 d5 6.Nb5+–) 5...Ke7?? (5...g6!? 6.Bc4 d5+–) 6.Qf5 (better 6.Nc3 c6 7.Nf3+– (7.Qf5?! d6 8.Qg5 Ke8 9.Qd8 Kd8+–)) 6...Ke8?? (6...d6 7.Qg5 Ke8 8.Qd8 Kd8 9.Bb2+–) 7.Bc4 (better 7.Qh5 Ke7 8.Nc3+–) 7...Ne7?? (7...Nf6 8.Qg5 Nc6+–) 8.Qf7 1–0. GuestWDHM – GuestNLGV, freechess.org, 2020.

2.Bb2 g5 (--> 1.b4 g5 2.Bb2 f6).

2.Bb2 g6 (--> 1.b4 g6 2.Bb2 f6).

2.Bb2 h6 3.e3+/– g6 (better is 3...d6!?+/–) 4.Bd3+– Kf7 5.Qg4 e6 (5...e5 6.Bg6 Ke7 7.Qh4+–) 6.Bg6 Ke7 7.Nf3 f5?? (7...d6+–) 8.Qh4 Kd6 9.Be5 Kc6 (9...Kd5 10.Nc3 Kc6 11.Qc4 Kb6 12.Qb5) 10.Qc4 Kb6 11.Nc3 d5 (11...a5 12.Bd4 c5 13.Bc5 Kc7 14.Nb5 Kc6 15.Ne5) 12.Qb5# 1–0. mtr – carld, internet, 2010.

2.b5 d6 3.Bb2 b6 (3...a6!? 4.a4 ab5 5.ab5 Ra1 6.Ba1 e5=) 4.e3 a6 5.a4 (5.Nc3 ab5 6.Bb5 c6+–) 5...ab5+= 6.ab5 (6.Bb5 c6 7.Be2 e5+=) 6...Ra1 7.Ba1 c5 (7...e5 8.Nc3+=) 8.e4 (8.Nc3 Nd7+–) 8...Bb7 (8...f5 9.Bd3 fe4 10.Be4+=) 9.Nc3 e6 (9...Nd7 10.Nh3 Qa8 11.f3+–) 10.Bc4 (better 10.Nh3 Qe7 11.Be2+–) 10...e5? (10...d5!? 11.ed5 Ne7+–) 11.Qh5 (11.Nf3 Ne7+–) 11...g6 12.Qh3 g5?? (better 12...f5 13.ef5 Qf6+–) 13.Bg8 Rg8 (13...h5 14.Be6+–) 14.Qe6 Qe7 15.Qg8 Kd7 (15...Qf7 16.Qf7 Kf7 17.f3+–) 16.Nge2 (better 16.Nd5 Qg7 17.Nb6 Kd8 18.Qe6+–) 16...Bh6 (16...Qg7 17.Qc4 Ke8+–) 17.Qb8 Bc8 18.Nd5 Qd8 19.Nb6 Ke8 20.Nc8 Bf8 21.b6 1–0. Anonymous – Anonymous, lichess.org, 2020.

2.b5 g5 3.e4+= e5 (3...Nh6 4.Qh5 Nf7 5.Nf3+=) 4.a4 (4.Qh5 Ke7+–) 4...b6 (better 4...Ne7!?+=) 5.Qh5+– Ke7 6.Ba3 (6.Nc3!? Bb7 7.Bc4+–) 6...d6+– 7.Nc3 Be6 8.Nge2 (8.Nd5 Kd7+–) 8...Bf7 (8...Nh6 9.Nd5 Kd7 10.Qf3+–) 9.Qh3 (9.Nd5 Ke8 10.Qf3 a6+–) 9...h5 10.Qd3 Bg7 (10...a6 11.Nd5 Ke8 12.Nec3+–) 11.Ng3+– Nh6 12.Nd5 Kf8?? (12...Kd7 13.Be2 g4 14.Ne3+–) 13.Ne3 (better 13.Nc7 Ke7 14.Na8+–) 13...Kg8 (13...a6 14.Ngf5+–) 14.Be2 (14.Nh5!? a6 15.h4+–) 14...h4+– 15.Ngf5 Bf8 (15...Nf5 16.Nf5 Nd7 17.Qf3+–) 16.h3 (16.Bh5 Be6+–) 16...Be6 (16...Nf5 17.Nf5 a6 18.0-0+–) 17.g3 (17.Nh6 Bh6 18.Qc3 a6+–) 17...hg3+– 18.fg3 Nf7 (18...c5 19.a5+–) 19.0-0-0 (19.Bg4 Nd7+–) 19...c6 (19...a6 20.h4+–) 20.h4 gh4 (20...cb5!? 21.Qb5 Nd7+–) 21.gh4+– a6 (21...Kh7+–) 22.Nd5 (22.Rdg1 Kh7 23.bc6 Nc6 24.Bh5+–) 22...Nh6? (22...cd5 23.Qg3 Ng5 24.hg5 Rh1 25.gf6 Kf7 26.Nd6 Qd6 27.Bd6 Rd1 28.Kd1 Bd6 29.Bh5 Kf6 30.Qh4 Kg7 31.Qg5 Kf8 32.Qf6 Kg8 33.Qe6 Kg7 34.Qf7 Kh8 35.Qf6 Kg8 36.Bf7 Kf8 37.Bg6 Kg8 38.Qf7 Kh8 39.Qh7) 23.Nh6?? (23.Rdg1 Kh7 24.Nh6 Bh6 25.Bd6 Nd7 26.bc6 Nc5+–) 23...Bh6? (better 23...Rh6 24.bc6 Nc6 25.Rdg1 Kf7+–) 24.Rdg1+– Kf8 (24...Bg7 25.Nb6!! Ra7 (25...Qb6 26.Qd6 Kh7 27.Qe6+–) 26.Qd6 Qd6 27.Bd6 cb5 28.ab5 ab5 29.Bb5 Kh7+–) 25.Nf6 (25.Nb6 Ra7 26.Qd6 Qd6 27.Bd6 Ke8 28.Bb8 Rb7 29.ba6 Rb6+–) 25...Bg7?? (25...Ke7 26.Rg6 ab5 27.ab5 Ra4 28.Ng8 Bg8 29.Bd6 Ke8+–) 26.Bd6+– Kf7 27.Bh5 (27.Bh5 Rh5 28.Nh5+–) 1–0. Bushwacker (1825) – Delboy Smith (1740), ChessWorld.net, 2013.

2.c3 e6 3.Bb2 (--> 1.b4 e6 2.Bb2 f6 3.c3).

2.c4 c6 3.d4 d5 4.e3 Nd7 (4...e5 5.a3=) 5.c5 (5.cd5 cd5 6.Qh5 g6 7.Qd5 e5+/–) 5...e5= 6.Be2 b6 7.de5 (7.Nc3 Ne7=) 7...Ne5=+ 8.cb6 (8.f4 Ng6 9.b5 Bc5 10.bc6 N8e7–/+) 8...ab6 (8...Bb4 9.Bd2 Bd2 10.Nd2 ab6 11.Ngf3–/+) 9.Nf3? (better is 9.b5!?=) 9...Bb4–/+ 10.Bd2 c5 (better is 10...Bd6!?–/+) 11.Ne5 (11.Bb4 cb4 12.Bb5 Kf7=) 11...fe5 12.Nc3? (better is 12.Bb4!? cb4 13.Bb5 Ke7 14.f4=) 12...Nf6–/+ 13.0-0 0-0 14.h3 (14.a3 Ra3 (< 14...Ba3 15.Nb5+=) 15.Ra3 Ba3–/+) 14...d4 (14...Bf5 15.a4–+) 15.ed4–/+ Qd4 16.Qc2 Ne4?? (16...Be6 17.a4–/+) 17.Qe4?? Ra3?? 18.Bc4 Kh8 19.Qd4 ed4 20.Ne4 Ra7? 21.Bb4 Ra4 22.Bc5 Rf4 23.Nd6 Bd7 24.Bb6 Ra8 25.Nf7 Kg8 26.Ne5 Kh8 27.Nd7 Ra3 28.Rfe1 Rc3 29.Re8 (29...Rf8 30.Rf8) 1–0. gdraper (2035) – scmorgan, net–chess.com, 2006.

2.c4 Kf7 3.b5 (3.Nc3 e5 4.b5 Bb4+=) 3...e6 (3...e5 4.Nc3+=) 4.Bb2 d5 5.e3 c6 (5...Ne7 6.Nc3+=) 6.Qh5 (6.cd5 ed5 (6...Qd5? 7.Nc3 Qd6 8.Ne4+–) 7.Nh3 Bd6+=) 6...g6 7.Qf3 Bg7 (7...Nh6 8.Nh3 Kg7 9.cd5 ed5 10.Nf4=) 8.g4 (8.Nh3!?+/–) 8...dc4 (8...Nh6 9.Nc3=) 9.Bc4 (9.a4 Nh6 10.Nc3 Nd7–/+) 9...cb5 10.Bb5 Qb6 (better is 10...Nc6!?=) 11.Na3+/– a6 (11...Bf8 12.Rb1 Qa5+/–) 12.Bd4?? (12.Nc4 Qd8 13.Ne5 Kf8 14.Ba4+/–) 12...Qc7+= 13.Bd3 Nc6 14.Bc3 Qd6–/+ 15.Nc4?? Qd3–+ 16.Nb6 Rb8 17.Nc8 Rc8 18.g5 h6 19.gf6 Nf6 20.Ne2 e5 21.Rg1 Rhd8 22.Qg3 b5 23.Nc1 Qc2 24.a3 Ne7 25.Qe5 Nh5 26.Qh5 gh5 27.Rg7 Kf8 28.Rh7 Rc3 29.Rh6 Qd2 (29...Qd2 30.Kf1 Qd1 31.Kg2 Qg4 32.Kf1 Rd1#) 0–1. mic (2195) – chessbrasil (2135), net–chess.com, 2008.

2.d4 a5 3.c3 (3.b5 d5=) 3...ab4=+ 4.cb4 e5 5.d5 (5.b5!?=) 5...Bb4–/+ 6.Bd2 Bf8 (6...Bd2 7.Nd2 Ne7 8.e4–/+) 7.Nf3 c6 8.dc6 (8.e4 Bc5 9.Nc3 b5=+) 8...bc6 9.Bb4?? (better is 9.e4=+) 9...Bb4–+ 10.Nbd2 Nh6 (10...d5 11.e3–+) 11.e4 0-0 (better is 11...d5 12.Qb3 Ba3–+) 12.Bc4?? (better is 12.Qb3 Kh8 13.Qb4–/+) 12...Kh8 (13.Rb1 Ba5–+; 12...d5!? 13.Bb3–+) 0–1. BIGAL 1971 – crazy 8, ChessWorld.net, 2005.

2.d4 c6 3.c4 (3.e4 e6+=) 3...e5 4.a3 d5 5.c5 (5.de5 fe5 6.e4 Nf6+=) 5...e4 (5...a5 6.Bb2 ab4 7.ab4 Ra1 8.Ba1=) 6.e3 Ne7 7.h3 a5 (7...Nf5 8.Nd2=) 8.Nc3 (8.b5 Be6=) 8...f5 (8...ab4 9.Na4–/+) 9.Nge2 (better is 9.b5!?+=) 9...ab4=+ 10.Na4 Ng6 11.ab4 b5 (better is 11...Be7=+) 12.Bb2?? (12.cb6 Nd7=) 12...Na6?? (12...ba4 13.Ra4 Ra4 14.Qa4–+) 13.Qb3?? Nh4?? 14.Nf4?? g6?? 15.Be2?? Qg5?? 16.g3 Nf3 17.Bf3= ef3 18.Nb6 Rb8 19.Nc8 Rc8 20.Ra6 Rd8 21.Ne6 Qe7 22.Nd8 Kd8 23.Rc6 Bg7 24.Qd5 Qd7 25.Rd6 Re8 26.Rd7 (26...Kc8 27.Qb7) 1–0. losertoo (1860) – scmorgan, net–chess.com, 2006.

2.d4 d5 3.e3 (3.a3 a5=) 3...e6 (3...e5 4.de5 Bb4 5.c3=) 4.c3 Bd6 5.b5 (5.Bd3 Ne7=) 5...Nd7 (5...Ne7 6.Bd3+=) 6.a4 (6.c4 dc4 7.Bc4 Nb6=) 6...Ne7 7.a5 c6 (7...0-0 8.Ba3+=) 8.a6 (8.Qg4 Kf7=) 8...b6 (8...cb5 9.ab7 Bb7 10.Qg4+=) 9.bc6 Nc6 10.Qh5 g6 11.Qh6 Qe7 12.Bd3 f5 (12...Rf8 13.Ba3 Ba3 14.Ra3=) 13.Ne2 (13.Nf3 Na5 14.Ba3 Ba3 15.Ra3 Nb8=) 13...e5= 14.Bb5 Na5 (14...Nd8 15.Ba3 Nf7 16.Qg7 Ba3 17.Ra3+=) 15.0-0 (15.Nd2 Qf8 16.Qf8 Rf8 17.de5 Be5+=) 15...e4 (15...Nb3 16.Ra2+=) 16.Ba3+/– Nc4 (16...Ba3 17.Na3 Nb3 18.Ra2+/–) 17.Bd6 Nd6 18.Bc6+– Rb8 19.Nf4 Qf8 20.Qh3 Qe7?? 21.Nd5 Qd8?? 22.Qg3 Nf7 23.Qb8 0-0 24.Qa7 Nd6 25.Nc7 Nc4 26.Ne6 (26.Ne6 Qh4 27.Bd7+–) 1–0. ifairclough – quikeagle, net–chess.com, 2002.

2.d4 g6 3.c4 Nc6 4.Nf3 Nb4 5.d5 d6?? (better is 5...Nh6= 6.Nc3 Bg7 7.Rb1 Na6 8.h4 b6 9.Nd4 Nc5) 6.Qa4+– Bd7 7.Qb4 e6 (7...Nh6 8.Nc3+–) 8.Bb2 (8.Nc3 Ne7 9.Qb7 Bg7 10.de6 Be6+–) 8...Bg7 9.e4 (9.Ng5 ed5 10.cd5 Nh6+–) 9...e5 (9...Ne7+–) 10.Nh4 (10.Be2 f5 11.Nc3 Nf6 12.ef5 Bf5+–) 10...Bg4? (better is 10...f5 11.g3 fe4+–) 11.Bd3 (11.Nc3 a5 12.Qb3 a4+–) 11...Bh5 (11...a5 12.Qb3 (12.Qb7?! Rb8 13.Qa7 Rb2=) 12...f5 13.Nf3 (13.Qb7? fe4 14.Be4 Rb8–/+) 13...fe4 14.Be4+–) 12.f3 b6 13.g4 Bg4 14.fg4 Qd7 15.Rg1 Ne7 16.Nc3 Bh6 17.Qa3 Be3 18.Rg3 Bc5 19.Qa6 0-0 20.Nb5 Kg7 21.h3 Bb4 22.Ke2 Ba5 23.Rf1 Ng8 24.Qb7 Kh6 25.Ng2 g5 26.Nc7 Rab8 27.Qa7 Qa4 28.Nb5 Qb4 29.Bc3 Qc5 30.Bb2 Rfe8?? 31.Nc7 Rec8 32.Ne6 Qb4 33.Qg7# 1–0. cubs_fan_1 – Mphilliber, ChessWorld.net, 2011.

2.e3 Kf7 3.Bd3 Nh6= 4.Bb2 (4.Nc3 Nc6 5.b5 Ne5+=) 4...d5 (4...Nc6 5.b5 Nb4 6.Bf1+=) 5.f4 (5.Nc3 e5=) 5...Bf5 (5...Nc6 6.a3 e5 7.fe5 Ne5 8.Ne2=+) 6.Bf5 (6.Nf3 e6 7.b5 a6=) 6...Nf5=+ 7.Nf3 e6 8.b5 (8.a3 Nd7=+) 8...a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 (11...Bc5 12.0-0=+) 12.0-0 (12.g4 Nd6 13.g5 Qa5= (worse 13...Nb5 14.gf6 gf6 15.Ng5 Ke7 16.Nf7+–)) 12...cb5=+ 13.Nc3 b4 14.Nb5 Bc5 (14...Nc6 15.Nfd4=+) 15.g4 Nd6 16.Nd6 Bd6 17.Nd4 Nc6 18.Nb5 (18.g5 h5=+) 18...h6 (18...Bc5 19.Qe2=+) 19.Qe2 Bb8 (19...Qd7 20.Kg2=+) 20.Bb2 (20.Qd3 Qd7–/+) 20...Qd7–/+ 21.Ra1 Rc8 22.h3 (22.g5 hg5 23.Qh5 Kg8 24.fg5 fg5 25.Qg5 e5–+) 22...e5 23.fe5 fe5 (23...Ne5 24.Nd4–/+) 24.e4 (24.Qd3 Kg8 25.Qb3 Rd8–/+) 24...Rd8 (24...Kg8 25.d3–+) 25.Qf3? (better 25.d3!?–/+) 25...Kg8–+ 26.d3 (26.Qb3 Kh8 27.Re1 de4–+) 26...Rf8 27.Qe2 (27.Qg2 Ne7 28.c4 dc4 29.dc4 Qd3–+) 27...d4 28.Rf1 (28.Qd2 Qe7–+) 28...Rf1 29.Qf1 (29.Kf1 Ne7 30.Nd4 ed4–+) 29...Ne7 30.Nd4 ed4 0–1. DEFFM – GuestPYRT, freechess.org, 2020.

2.e4 c6 3.Nc3 d6 4.Bc4 d5? (4...e6 5.Qe2=) 5.Bb3 (better is 5.ed5 e5 6.de6 Bb4 7.Qg4+/–) 5...e5= 6.ed5 Ne7 (6...Bb4!? 7.Qh5 g6=) 7.dc6+/– Nbc6 8.Nge2 (8.a3 a5 9.ba5 Na5+/–) 8...Nf5 (8...Nb4 9.d4=) 9.d3 (9.a3!?+/–) 9...Nb4 (better is 9...Bb4 10.0-0 Ncd4=) 10.g4 (10.0-0!?+=) 10...Nh4 (better is 10...Nd4 11.Ba4 Nbc6–/+) 11.Ba3? (better is 11.Ng3=+) 11...Nf3 12.Kf1 Bg4 13.Bb4?? (better is 13.h3 Bd7 14.Bb4–+) 13...Bb4 14.a4 Qc7 15.h3–+ Bh5 16.Na2 Bd6 17.Bd5 Rc8 18.Bf3? Bf3 19.Rg1 Rg8 20.Nac3 Qf7 21.Rb1?? Qh5 22.Qd2 f5 23.Rb7?? Bb7 24.d4 Qh3 25.Ke1 e4 26.Nb5 Be7 27.d5 (27...e3 28.fe3 Qh4 29.Kd1 Qa4 30.Nbd4 Bd5 31.Nf5 Qa1 32.Qc1 Qc1 33.Kc1–+; 27.Na7 Ra8 28.Qa5 Bc6–+) 0–1. oracleinshadows (1725) – scmorgan, net–chess.com, 2006.

2.e4 d5 3.Bd3 (3.Qh5 g6 4.Qd5 Qd5 5.ed5 e6+=) 3...de4 4.Be4 Qd4 (better is 4...f5 5.Bf3 e5=) 5.Bf3?? (better is 5.Nc3+=) 5...Qa1–+ 6.Ne2 (6.Nc3–+) 6...Qb1 7.d4 (7.a3 e5–+) 7...Qb4 8.c3 Qd6 9.Be3 Nc6 10.0-0 e5 11.Ng3 Nge7 (11...ed4 12.cd4 Nge7 13.Re1–+) 12.Be4 (12.d5 Nd8–+) 12...f5 (13.Bc6 Nc6 14.de5 Ne5–+) 0–1. scmorgan – nay (2190), net–chess.com, 2006.

2.e4 e6 3.a3 c6 (3...d5 4.Qh5 g6 5.Qe2=) 4.Bb2 (4.d4 d5 5.ed5 ed5+=) 4...a6 (4...d5 5.e5=) 5.f4 Ne7 (5...b5 6.Nf3+=) 6.f5 (6.Bd3 d6+=) 6...e5 (6...ef5 7.Qh5 g6 8.Qh4=) 7.Bc4 (7.Qh5 g6 8.fg6 Ng6+=) 7...b5 (7...d5 8.Qh5 Kd7 9.Bd3=) 8.Bb3 g5?? (better 8...Qc7+=) 9.Qh5+– Ng6 10.fg6 Ke7 11.gh7 (better 11.g7 Bg7 12.Qf7 Kd6 13.Qg7 Qf8 14.Qf8 Rf8+–) 11...d6 (11...Qe8 12.Qe8 Ke8+–) 12.Qf7 1–0. alaindubleu (1655) – angelsword12, lichess.org, 2016.

2.e4 g5?? 3.Bc4 (3.Qh5) 3...e6+/– 4.Ba3 (4.Qh5 Ke7+/–) 4...Bg7 (4...Nh6!?=) 5.Qh5+/– Ke7 6.b5 (6.d4 Qe8 7.Qe2 Kd8+/–) 6...d6+= 7.c3 (7.Nf3 a6+/–) 7...c6 (7...a6 8.ba6 Na6 9.h4 gh4 10.d4+=) 8.bc6 Nc6 9.d4 a6 10.d5 (10.Nf3 b5 11.Bb3 Nh6+/–) 10...b5 (10...Ne5 11.de6 Qc7+=) 11.Bf1 (11.dc6 bc4 12.Nd2+–) 11...e5?? (better is 11...ed5 12.ed5 Ne5=) 12.dc6+– Qc7 13.Nd2 Qc6 14.c4 bc4 15.Nc4 Be6 16.Bd6 Kd7 17.Rd1 a5 18.Be5 Ke7 19.Bd6 Kd7 20.Bf8 Kc7 21.Bg7 Bc4 22.Rc1 Qe4 23.Be2 Qg2 24.Rc4 Kd6 25.Rd4 Ke5 26.Nf3 Ke6 27.Bc4 Ke7 28.Qf7# 1–0. wee harv – Pekin Dragons, ChessWorld.net, 2011.

2.Nf3 f5 3.e3 Nf6 4.Bb2 b6 5.Bc4 e6 6.0-0 Bb7 7.d3 Be7 8.b5 0-0 9.Nbd2 Nd5 10.Qe2 c5 11.bc6 Nc6 12.Bd5 ed5 13.Nb3 Bf6 14.Bf6 Qf6 15.Nbd4 Rae8 16.Rab1 f4 17.Rb5 Ne5 18.Ne5 Re5 19.Nf3 Ree8 20.Rb4 fe3 21.fe3 Qd6 22.Qd2 a5 23.Rd4 Qh6 24.Re1 Rf7 25.Qc3 Re3 26.Re3 Qe3 27.Kf1 Re7 28.Qd2 Qe6 29.c4 dc4 30.dc4 Qf5 31.Rf4 Qb1 32.Kf2 Bc6 33.Nd4 Bb7 34.Nf5 Re8 35.Nd6 Rb8 36.Nb7 Rb7 37.Qd5 1–0. TriAngel – flyfisher, ICC 1999.

2.f4 c6 3.g4? (3.e4 d5=) 3...g5 (3...e5 4.c3–/+) 4.Kf2? (4.fg5!? e5 5.gf6 Nf6 6.g5=) 4...a5 (4...gf4 5.e3–/+) 5.a4 (5.fg5 ab4 6.Bb2 e5+=) 5...b5 (better is 5...gf4!? 6.d4 d6–+) 6.ab5= cb5 (6...gf4 7.d4=) 7.ba5 (7.fg5 Bb7 8.Bg2 Qb6 9.d4 a4=) 7...Ra5 8.Ra2 ½–½. Georgiev,Lukas – Owens,Johnny (1940), IECC Swiss email, 2000.

2.f4 d5 3.e3 +=.

2.g3 d5 3.d3 Nc6 4.b5 Nd4 5.a4 Bg4 (5...e5!?=+) 6.c3= Nf5? (better is 6...Ne6=) 7.h3 Be2 (7...Ng3 8.fg3 Bf5 9.a5+–) 8.Ne2 h5 (8...e5 9.Bg2+–) 9.Bg2 c6 (9...e5 10.0-0+–) 10.Nf4 Qd6 11.d4 (11.0-0 0-0-0+–) 11...h4 (11...g5 12.Ng6 Rh6 13.Nf8 Kf8 14.h4 Qe6 15.Qe2 Qe2 16.Ke2+–) 12.g4 Nfh6 13.Ng6 (13.Qc2 f5 14.g5 Nf7 15.Qf5 e6 16.Qe6 Qe6 17.Ne6 Kd7 18.Nf8 Rf8+–) 13...Rh7 14.Nf8 Kf8 15.Qf3 g5 16.Bg5 Nf7 17.Bf4 Qe6 18.Qe2 Qe2 19.Ke2 Nd8 20.Nd2 Ne6 21.Be3 cb5 22.ab5 Nc7 23.b6 ab6 24.Ra8 Na8 25.Bd5 Nc7 26.Bb7 Nb5 27.Kd3 e5 28.Be4 Rc7 29.c4 Na3 30.Ra1 Nc4 31.Nc4 ed4 32.Bd4 b5 33.Nd6 b4 34.Ra8 Kg7 35.Ne8 Kf8 36.Nc7 Kg7 37.Ne6 Kf7 38.Bf5 b3 39.Bc5 b2 40.Rf8 1–0. touchdown – JimDog, ChessWorld.net, 2005.

2.g3 e5 3.c3 +=.

2.g3 e6 3.a3= Bd6 (3...a5 4.b5=) 4.Nf3 Nc6 5.Nc3 Ne5 6.Bg2 Nf3 7.Bf3 Be5 (7...Nh6 8.d4 Nf7 9.Ne4=) 8.d4+/– Bd6 9.0-0 e5 (9...Be7 10.Bh5 g6 11.Bf3+/–) 10.Nb5 Be7 (10...Bf8 11.de5 fe5 12.Qd3+/–) 11.d5 (11.de5 a6 12.ef6 Nf6+/–) 11...c6 (11...a6 12.Nc3+=) 12.Nc3+/– c5?? (better is 12...Qc7+/–) 13.d6+– Bf8 (13...Qb6 14.de7 Ne7 15.bc5 Qc5 16.Ne4+–) 14.Nb5 (14.bc5?! g6+–) 14...Qb6 15.a4 (better is 15.Nc7 Kd8 16.bc5 Qc5 17.Na8 Qd6+–) 15...a6 (15...Kd8 16.Be3 Qa6 17.Bc5 b6+–) 16.bc5 Qc5 17.Ba3 Qd4 (17...Qc4 18.Nc7 Kd8+–) 18.Nd4 1–0. pierre – otac, internet, 2009.

2.g3 Kf7 3.Nf3 (3.e4 e6=) 3...g6 (3...e5 4.Ba3=) 4.Bg2 (4.d4 d5+=) 4...e6 (4...e5 5.c3=) 5.a3+= Bg7 (5...a5 6.b5+=) 6.Bb2 (6.0-0 d5+=) 6...a6 (6...d5 7.0-0+=) 7.0-0 Ne7 8.c4 Nbc6 9.Nc3 d5 10.c5 (10.Qb3 Qd6+=) 10...Rb8 (10...e5 11.d4+=) 11.e4 (11.d4 Re8+=) 11...d4= 12.Ne2 e5 13.Nh4 (13.Ne1 Bh6=) 13...b6 (13...d3 14.Nc3=) 14.cb6 cb6 15.Rc1 Be6 16.Nf3 (16.d3 Rf8=) 16...Qd7 17.d3 a5 (17...Rhc8 18.Nd2=) 18.b5 Na7 19.a4 Rhc8 20.Rc8 (20.Nd2 Rc1 21.Bc1 Rc8=) 20...Rc8 21.Qb1 Qd6+= 22.Rc1 Qb4–/+ 23.Qa1 Bb3 24.Bh3 Rc5?? 25.Ba3+/– Rc1 26.Qc1 Qa4 27.Bd7?? Nb5–+ 28.Be7 Ke7 29.Qc8 Bf7 30.Bc6 Bh6 31.Qd7 Kf8 32.Nf4 Qa1 33.Kg2 ef4 34.Bb5 fg3 35.hg3 Qa3 36.Qd8= Kg7 37.Qd4 Qc5+= 38.Qd7 Kg8 39.d4 White intends e5 39...Qc2 40.e5 fe5 41.Ne5 Qe4 42.f3 Qc2 43.Kh3 Qf5–/+ 44.Qf5 gf5 45.f4 Bg7 46.Nf7 Kf7 47.d5 Bf6 48.d6 Ke6 49.d7 h5 50.Kg2 Kd5 51.Kf3 Kc5 52.Bd3 a4 53.Bf5 b5 54.g4? hg4–+ 55.Kg4 Kd6 56.Bd3 a3 57.Bb1 Kd7 58.Kf5 Ke7 59.Ba2 b4 60.Kg6 Bd4 61.f5 Bf6 62.Bb3 Bh4 63.Ba2 ½–½. mroets (2050) – mburden (2305), net–chess.com, 2003.

2.a3 e5

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

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

2.a3 g6

(--> 1.b4 g6 2.a3 f6).

3.Bb2 (--> 1.b4 g6 2.Bb2 f6 3.a3).

2.a4 e5

3.Ba3 d5 4.d4 (4.e3 Bd6+=) 4...e4 (4...Bd6 5.b5+=) 5.e3= Bd7?? (better is 5...Be6=) 6.Qh5+– g6 7.Qd5 Bc6 (7...Ne7 8.Qb7 Bc6 9.Bb5+–) 8.Qe6 Qe7 9.Bc4 (9.Qc8 Kf7 10.b5+–) 9...Qe6+/– 10.Be6 Ba4 11.c4 Nd7 12.d5?? b5 13.c5 Ne7 14.Nc3+/– f5? 15.Nge2 a6?? 16.c6 Nb6 17.Nd4?? Bg7 18.Bb2 Bd4+= 19.Na4? Bb2–+ 20.Nb2 Ned5 21.Bd7 Nd7 22.cd7 Kd7 23.0-0-0 Ke6 24.Rd4 a5 25.Rhd1 ab4 26.Rd5–/+ Ra1 27.Kc2 Rd1 28.Rd1 Ra8 29.Kb3 c5–+ 30.Kc2 Ra2 31.Rd8 c4 32.Kb1 b3 33.Rb8?? c3–+ 34.Rb6 Kf7 35.Rb7 Kg8 36.Rb8 Kg7 37.Rb7 Kh6 (37...Kh6 38.Rc7 Rb2 39.Kc1 b4–+) 0–1. ifairclough – quikeagle, net–chess.com, 2001.

3.c3 d5 4.a5 d4 5.Qb3 Qe7 (5...Bf5 6.e3=) 6.Ba3 Qe6 (6...Be6 7.Qa4 c6 8.Nf3+=) 7.c4 (7.Qe6 Be6 8.cd4 Nc6+=) 7...Ne7 8.e3 Nec6 9.e4 (9.Qb2 Nd7+=) 9...b5 (9...Be7+=) 10.d3 (10.ab6 ab6 11.b5 Nb4=) 10...bc4 (10...Na6 11.Qb2 bc4+=) 11.Qc4? (better is 11.dc4!? Be7 12.Qa4+=) 11...Qc4–+ 12.dc4 Bb4 13.Bb4 Nb4 14.Kd2 Be6 15.Na3 N8c6 16.Nb5 0-0-0 17.Bd3 Nd3 18.Rb1 Nf2 19.Nf3 Nh1 20.Rh1 Bc4 21.Na3 Na5 22.Nc4 Nc4 23.Kd3 Nb2 24.Kc2 Nc4 25.Kb3?? Nd6 26.Kb4 Ne4 27.Kb5 Rd6 28.Ra1 Kb7 29.Ra5 Nc3 30.Kc5 Rc6 31.Kb4 Rb8 32.Ra1 Kc8 33.Ka5 Rb5 0–1. ifairclough – quikeagle, net–chess.com, 2002.

2.Bb2 a5

3.b5 a4 4.a3 e5 (4...d5 5.e3=) 5.c4 (5.e4 Bc5=) 5...Ne7 6.e3 (6.e4 Ng6+=) 6...Ng6 (6...d5 7.cd5 Nd5 8.d4 ed4 9.Qd4+=) 7.Nf3 (7.Nc3 Be7+=) 7...d5 (7...e4 8.Ng1+=) 8.cd5 Qd5 9.Nc3 Qd8 (9...Qd6 10.Qc2+=) 10.Na4 Bd6 (10...Bg4 11.Qc2+=) 11.Nc3 (11.d4 ed4 12.Bd4 Qe7+=) 11...0-0 (11...Bg4 12.Be2+–) 12.a4 (12.Bc4 Kh8+–) 12...Be6 13.Be2 Nd7 (13...f5 14.0-0+=) 14.d4+– Nb6 (14...Ra5 15.0-0+–) 15.0-0 (15.d5 Bc8 16.a5 Nd7+–) 15...ed4 (15...Bf7 16.Qc2+–) 16.Nd4 (worse 16.ed4 Nf4+=) 16...Bf7 17.Ne4 Be7 (better 17...Bb4+–) 18.Rc1 (better 18.Qc2!?+–) 18...Ne5 (18...Na4 19.Ba1=) 19.Nc5 (19.Nc3!?+=) 19...Bc5= 20.Rc5 Na4 21.Rc2 Nb2 22.Rb2 Qe7 23.Qc2 Rfc8 24.Rc1 h5 (24...Bg6 25.Qb3 Bf7 26.Qd1=) 25.h3 (25.Qe4 c6 26.Nf5 Qd7 27.bc6 bc6+–) 25...c6 (25...Bg6 26.Qb3 Bf7 27.Qd1+=) 26.bc6+– bc6 27.Qc5 (27.Nf5 Qd7+–) 27...Qc5+= 28.Rc5 Ra6?? (better 28...Bd5+=) 29.Ba6+– Ra8 1–0. BeepBeepImAJeep (2640) – Kaza30 (2215), lichess.org, 2017.

3.b5 c6 4.a4 cb5 5.ab5 Qb6 6.e4 (6.Nc3 e6+–) 6...d6 (6...Na6 7.Nf3 Nh6 8.Be2+– (8.ba6?! Qb2 9.Nc3 ba6+–)) 7.Bc4 (7.Nc3 Nd7+–) 7...e6 (7...Nc6!?+–) 8.Nf3 (8.Nc3 Ne7+–) 8...Ne7 9.0-0 Bd7 (9...Nbc6!?+–) 10.Qe2 (10.Nc3 Ng6+–) 10...d5 (10...Ng6 11.Nc3+–) 11.ed5 Nd5 (11...ed5 12.Bd3 Bg4+–) 12.Bd5 Be7 (12...Qb5 13.Qb5 Bb5 14.Re1+–) 13.Bd4 (better 13.Nc3 a4 14.Ba3+–) 13...Qd8 (13...Qb5 14.Qb5 Bb5 15.Bb7 Bf1 16.Kf1 Ra6 17.Ba6 Na6 18.Ra5 Nb8+–) 14.Bb7 Ra6 15.ba6 Na6 16.Qa6 0-0 17.Ra5 Bc8 18.Rb5 Bb7 19.Qe6 Kh8 20.Rb7 Qd6 21.Qe7 Qe7 22.Re7 (22.Re7 Kg8 23.Nc3 Rc8 24.Rb1 Re8 25.Re8 Kf7 26.Rh8 h6 27.Rb7 Kg6 28.g4 h5 29.Rh5 f5 30.Rg7) 1–0. DEFFM – GuestVVVH, freechess.org, 2019.

2.Bb2 a6

3.a4 Nc6 4.b5 ab5 5.ab5 Na7 (5...Ra1 6.Ba1 Ne5 7.e4+=) 6.e4 e5 7.Bc4 b6?? (7...Bc5 8.d4 Bb4 9.Kf1+–) 8.Qh5?? (better 8.Bd5 c6 9.bc6 dc6 10.Bc6 Nc6 11.Ra8+–) 8...g6+– 9.Qf3 Bb7 10.Ne2 f5 (10...Qe7!? 11.Qb3 Nh6+–) 11.Be5 fe4?? (better 11...Nf6 12.Nbc3 Qe7+–) 12.Qf7 1–0. GuestVRKP – GuestRTVP, freechess.org, 2019.

3.e3 b5 4.a4 ba4 5.Ra4 d6 6.Nf3 Bd7 7.Ra1 Bc6 8.c4 Nd7 9.d4 Bb7 10.Nbd2 e5 11.d5 c5 12.bc5 Nc5 13.Be2 Qb6 14.Rb1 Qc7 15.0-0 a5 16.e4 a4 17.Ba3 Nb3? (better is 17...Bc8+=) 18.Nb3+– ab3 19.Qb3 Ra7 20.Rb2 Ne7 21.Rfb1 Ba6 22.Qb8 Qb8 23.Rb8 Kf7 (23...Kd7+–) 24.Bd6 g6 (24...Ng6 25.Bf8 Rf8 26.Rf8 Kf8+–) 25.Ra1 Bg7 26.Rb6 (better is 26.Rh8 Bh8 27.c5+–) 26...Rha8 27.Bb8 Bf8 (27...Rb7 28.Rb7 Bb7 29.Ra8 Ba8+–) 28.Ba7 Ra7 29.Rba6 Rb7 30.Ra7 Rb2 31.Bf1 Kg7 (31...Kg8 32.Rc7 Rb8 33.c5+–) 32.d6 Kf7 33.de7 Be7 34.Rc7 Rc2 35.Raa7 (35...Kf8 36.Re7+–) 1–0. chevin – rutcho, Live Game Caissa's Web, 2004.

3.e4 d5 (3...e5 4.a3=) 4.ed5 (4.Qh5 g6 5.Qd5 Qd5 6.ed5 e5 7.de6 Bb4+=) 4...e5 (4...Qd5 5.Nc3 Qe6 6.Be2=) 5.Nf3 (5.de6!? Be6 6.Qh5 Bf7 7.Qe2 Qe7 8.a3+–) 5...Qd5 6.Nc3 Qd6 7.d4 (7.a3 Bf5=) 7...e4 (7...ed4 8.Nd4 Qb4 9.Qh5 g6 10.Qe2 Ne7 11.0-0-0=) 8.Ne4= Qe6 (8...Qb4 9.Bc3 Qe7 10.Qe2=) 9.Qe2 Be7 (9...Bb4!? 10.c3 Be7+=) 10.Nc5+– Qc6 11.Qe3 (11.c4 Nd7+–) 11...b6+– 12.Ne4 Qc2 13.Ba3 (13.Bc3 Qa4+–) 13...Qc6 (better 13...Qa4!?=) 14.Rc1+– Qd7 15.Bc4 Kd8? (15...Nc6+–) 16.Rd1?? (better 16.Neg5 fg5 17.Ne5+–) 16...Qa4+= 17.Rd3 (17.Rb1 Qc6 18.Bb3 a5+=) 17...Nh6 (17...Bb4 18.Bb4 Qb4 19.Nfd2=) 18.Bd5 (18.Rb3!?+=) 18...c6=+ 19.Bc4 c5?? (better 19...Bb4 20.Bb4 Qb4 21.Nfd2 b5=+) 20.dc5+– Ke8 (20...Nd7 21.c6! (21.cb6?! Bb4 22.Bb4 Qb4 23.Nfd2 Rb8+–) 21...Bb4 22.Bb4 Qb4 23.Ned2+–) 21.cb6 (21.Nd6!? Kf8 22.Nc8 Qe8 23.Ne7 b5+–) 21...Nf7 (21...Nf5 22.Qf4 Bb4 23.Ned2 Ba3 24.Bf7 Kf7 25.Qa4 Bd6+–) 22.0-0 Nd7 (22...Kf8 23.Bd5 Nc6 24.b5 ab5 25.Nc5+–) 23.Bf7 (better 23.Nc3 Qc2 24.Nd4 Qd3 25.Bd3 Nfe5+–) 23...Kf7 24.Rfd1 (better 24.Re1!? Rf8 25.Neg5 Kg8 26.Qe7 fg5+–) 24...Rd8 (24...Rb8 25.b5 Nb6 26.Be7+–) 25.Qd2 (25.Nc3 Qa3 26.Nd5 Bc5 27.Ng5 fg5 28.Qf3 Nf6 29.Ra3 Bg4+–) 25...Qc6? (25...Rb8 26.Re1+–) 26.Rd4 (26.Nd6!? Bd6 27.Rd6 Qb7+–) 26...Qb6 27.h3 (27.Nd6 Bd6 28.Rd6 Qb7+–) 27...Bb7? (27...Kg8+–) 28.Rd7 (better 28.Nd6 Kf8 29.Nb7 Qb7 30.Rd7 Rd7 31.Qd7 Qd7 32.Rd7+–) 28...Be4 29.Rd8 (29.Qf4!? Bf3 30.Qf3+– (30.gf3?! Qe6 31.Rd8 Rd8 32.Rd8 Bd8=)) 29...Rd8+= 30.Qe2 (30.Nd4 f5+=) 30...Bf3 (30...Qb5 31.Qe1 Bf3 32.gf3 Rd1 33.Qd1=+) 31.gf3 (31.Qf3 Rd1 32.Qd1 Qe6=) 31...g6 (31...Qb5!? 32.Qc2 Rd1 33.Qd1 a5=+) 32.Rd8= Bd8 33.Qc4 Kg7 34.Kg2 g5 (34...Be7!?=) 35.Qd4?? (better 35.Bb2+–) 35…Qd4–+ (35...Qd4 36.Bc1 Qb4–+) 0–1. WarlpiriMan – johnhg57, ChessWorld.net, 2011.

2.Bb2 b6

(--> 1.b4 b6 2.Bb2 f6).

3.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 f6).

3.Nf3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.Nf3 f6).

2.Bb2 c5

3.bc5 Nc6 4.e3 e5 5.d4 d5 6.cd6 Bd6 7.de5 Ne5 8.Be5 fe5 9.Bd3 Qf6 10.Ne2 Bf5?? (10...Be6 11.Nec3+/–) 11.0-0 (better is 11.Bf5 Ne7 12.Be4+–) 11...0-0-0 12.Bf5 Qf5 13.Qc1 e4 14.Ng3 Bg3 15.fg3 Rd6?? (better is 15...Qc5+=) 16.Rf5+– Rf6 17.Rf6 gf6 18.Qa3 1–0. swislina – banjoman, kurnik, 2011.

3.bc5 d5 4.Bc3 (better is 4.cd6!? e5 5.e4+/–) 4...e5 5.d4 Nc6 6.e3 ed4 7.ed4 h5 8.Bd3 a6 9.Bg6 Kd7 10.Bh5 g6? (better is 10...Nge7+–) 11.Bg6 Nge7 (11...Qe7 12.Qe2+–) 12.Bd3 Bh6 13.Nd2 Qg8 14.g3 Kc7 15.Nb3 Bg4 16.f3 Bd7 17.Ba5 Na5 18.Na5 b6 19.cb6 Kb6 20.Qd2 (better is 20.Nb3+–) 20…Bd2–+ (20...Bd2 21.Kd2 Ka5–+) 0–1. swislina – banjoman, kurnik, 2011.

2.Bb2 Nc6

3.b5 Nb4 4.e4 e5 5.a3 d5 6.ab4 Bb4 7.Qh5 g6 8.Qh4+–.

3.b5 Nb4 4.e4 e5 5.a3 Nd5 6.ed5 d6 7.Bc4 Ne7 8.Ne2 b6 9.0-0 Bb7 10.Nbc3 Ng6 11.f4 Be7 12.f5 Nh4 13.Ng3 c6 14.dc6 Bc8 15.Qh5 g6 16.Qh4 Kf8 17.Qh6 Ke8 18.fg6 d5 19.g7 Rg8 20.Qh5 1–0. Rachow,Thomas (1620) – Goertz,Hans_Georg, DESC (year?).

3.b5 Nb4 4.e4 e5 5.a3 g6 6.ab4 Bb4 7.Ra4 Bc5 8.Nc3 Nh6 (8...c6 9.Nf3+–) 9.Nf3 Ng4 (9...0-0 10.Bc4 Kg7 11.0-0+–) 10.d4 0-0 (10...ed4 11.Nd4 Ne5+–) 11.dc5 Qe7 (11...Kg7 12.Bc4+–) 12.h3 Nh6 13.b6! a6 (13...ab6 14.Nd5 Double attack (14.Ra8 Pinning; 14.Ra8 Deflection; 14.Nd5 Decoy); 13...cb6 14.Bc4 Double attack) 14.Nd5 Qc5 15.Ba3 Qc6 16.Ne7 Kh8 17.Nc6 dc6 18.Bf8 cb6 19.Qd8 b5 (19...Ng8 20.Be7 h6 21.Bf6 Kh7 22.Qc7 Bd7 23.Qd7 Ne7 24.Qe7 Kg8 25.Bc4) 20.Bh6 1–0. Pierre – Promyphol, internet, 2019.

3.b5 Nb8 4.e3 (4.Nc3 a6 5.a4 e6+–) 4...e5 (4...a6 5.c4+–) 5.Nf3 d5 6.c4 dc4 (6...Ne7!?+–) 7.Bc4+– Ne7? (better 7...Nd7 8.0-0 Nb6+–) 8.Qb3 Nf5 (8...Qd6 9.d4 Ng6 10.Bf7 Kd8 11.0-0+–) 9.Bf7 Kd7 (9...Ke7 10.Ba3 Nd6+–) 10.Qe6 1–0. DEFFM – abdulsathar, freechess.org, 2019.

3.b5 Ne5 4.e3 b6 5.Be5+/– fe5 6.Nf3 (6.Qf3 Rb8 7.Qh5 g6 8.Qe5 Nf6+/–) 6...d6 (6...e4 7.Ne5 Nf6 8.Nc3=) 7.c4 Bb7 8.Be2 Qd7 9.d3 0-0-0 (9...a6 10.Nc3+=) 10.a4+/– Kb8 (10...Nf6 11.a5+/–) 11.Nc3 a5? (better is 11...Nf6+/–) 12.ba6!+– Ba6 13.Qb3 e6 14.a5 Bb7 15.ab6 cb6 16.Nb5 Qc6 17.Qa4 Rd7?? 18.0-0 Nf6 19.Ra2 Be7 20.Rfa1 Rdd8 21.Na7?? Qa4+/– 22.Ra4 Nd7 23.d4 d5 24.cd5+/– Bd5 25.Nb5 ed4 26.Nbd4 Bc5 27.Bc4 Bc4 28.Rc4 e5 29.Ne6 Rc8+/– 30.Ng7 Rhe8? 31.Nf5?? e4 32.N3d4 Bd4 33.Rc8 Rc8 34.Nd4 Nc5 35.g3 Kb7 36.Nb5 Nd3? 37.Nd6+– Kc7 38.Nc8 Kc8 39.Ra7 h5 40.Rh7 h4 41.gh4 b5 42.Rh5 b4 43.Rb5 Kd7 44.h5 Kc6 45.Rb8 Kc7 46.Rb4! Nb4 47.h6 Nd5 48.h7 Nf6 49.h8Q (49.h8Q Nd7 50.h4+–) 1–0. Fournier,Frederic (1975) – jachachau (1810), Active (5/0), 2006.

3.b5+= Ne5 4.e3 d5 5.Nc3 Nc4 (5...Nh6 6.d4 Ng6 7.Bd3+=) 6.Bc4+/– dc4 7.Qe2 Be6 (7...a6 8.Qc4 ab5 9.Qb5 Qd7 10.Nf3+/–) 8.Qf3 (better is 8.Nf3+/–) 8...g5? (better is 8...Rb8+/–) 9.Qb7+– Bf5 (9...Nh6 10.h4 gh4 11.Nf3+–) 10.Qc6 Bd7 11.Qc4 Rb8 (11...Rc8 12.a4+–) 12.Nge2 e5 (12...Qc8 13.Nd4+–) 13.f4 gf4 14.ef4 ef4 15.a4 Ne7 16.Ne4 Bg7 17.Nf4 Bf5 18.Nh5 Bh6 19.Nhf6 Kf8 20.0-0 a6 21.Qc5 Bd7 22.Nd7 Ke8 23.Nef6 Kf7 24.Qh5 Kg7 25.Nd5 Kg8 26.Qf7# 1–0. marekt – arac, internet, 2010.

2.Bb2 d6

(--> 1.b4 d6 2.Bb2 f6).

3.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 f6).

2.Bb2 e5

(--> 1.b4 e5 2.Bb2 f6).

3.a3 a5 4.b5 d5 5.e3 (--> 1.b4 e5 2.Bb2 f6 3.a3 d5 4.e3 a5 5.b5).

3.b5 c6 4.e4 (--> 1.b4 e5 2.Bb2 f6 3.e4 c6 4.b5).

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

3.b5 d5 4.a4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.a4).

3.b5 d5 4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3).

3.e4 Bb4 4.Bc4 c6 (--> 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 c6).

2.Bb2 Kf7

3.a3 e6 4.c4 d5 5.e3 c5 (5...dc4 6.Bc4 Bd6+=) 6.Nf3 (better 6.bc5!? Bc5 7.d4+=) 6...cb4=+ 7.ab4 Bb4 8.Qb3 (8.cd5 Qd5 9.Nc3=+) 8...Bd6 (8...Nc6 9.cd5 ed5 10.Bb5=+) 9.Nc3 (9.cd5 e5+=) 9...Ne7 (9...dc4!? 10.Bc4 Nc6=) 10.cd5+= ed5 (10...Na6 11.de6 Be6 12.Bc4 (12.Qb7? Nc5 13.Qb5 Rb8–+) 12...Bc4 13.Qc4 Ke8 14.Ne4+–) 11.Nd5+– Be6 (11...Nd5!? 12.Qd5 Ke7+–) 12.Bc4+– Nbc6 (12...b5 13.Qb5 Nbc6 14.Ne7 Ne7+–) 13.Ne7?? (better 13.Nf4 Bc4 14.Qc4 Ke8 15.Ne6+–) 13...Qe7 (13...Bc4 14.Qc4 Ke7 15.0-0+–) 14.Be6+– Qe6 15.Qb7 Ne7 16.Nd4 (16.Ra7 Rab8 17.Qd7 Qd7 18.Rd7 Rb2–/+) 16...Qc4 (16...Qd5 17.Qd5 (17.Ra7?! Ra7 18.Qa7 Ra8=) 17...Nd5 18.Ra5+–) 17.Rc1 (17.Nf5 Qe6 18.Nd6 Qd6+–) 17...Rab8 (17...Rhb8 18.Qe7 (worse 18.Rc4 Rb7 19.Rc2 Rab8=) 18...Be7 19.Rc4 Rb2 20.Ke2+–) 18.Qb8 (better 18.Qe7 Ke7 19.Rc4 Rb2 20.Ke2+–) 18...Rb8?? (better 18...Qc1! 19.Bc1 Rb8=) 19.Rc4+– Rb2 20.0-0 (20.Ke2 a5+–) 20...Be5 (20...Rd2 21.Ra4+–) 21.Ra4 (21.Nf3 a5+–) 21...Rb7 (21...Bd4 22.ed4 Rb7 23.Rfa1+–) 22.Nf3 Bc7 23.d4 Bb6 (23...Nd5 24.Rc4+–) 24.Rfa1 Nd5 25.h3 Nc3 (25...Rc7 26.R4a2+–) 26.Ra6 (26.Rc4 Ne4+–) 26...Ne2 (26...Ke6 27.Kf1+–) 27.Kf1 Nc3 28.Nd2 Nd5 (28...Rc7 29.Ke1+–) 29.Nc4 Nb4 (29...Rd7+–) 30.Nd6 Kg6 (30...Ke6 31.Nb7 Na6 32.Ra6+–) 31.Nb7 Na6 32.Ra6 h5 33.Rb6 (better 33.Nd6 Kg5+–) 33...ab6 34.Nd6 (34.d5 Kf7 35.Nd6 Kf8+–) 34...f5 35.Nb5 (35.Ke2 Kf6+–) 35...Kf6 36.Ke2 g5 (36...Ke6 37.f3+–) 37.Kd3 Ke6 (37...Ke7 38.d5+–) 38.Kc4 Kd7 (38...Ke7 39.Kd5 f4 40.ef4+–) 39.f4 Kc6 (39...gf4 40.ef4 Ke7+–) 40.d5 Kb7 41.fg5 h4 42.g6 f4 (42...Kb8 43.g7 Kc8 44.g8Q Kd7 45.d6 f4 46.ef4 Kc6 47.Qc8) 43.ef4 (43.g7 Kc8 44.g8Q Kd7 45.Qf7 Kd8 46.ef4 Kc8 47.Qc7) 43...Ka6 (43...Kb8 44.g7 Kc8 45.g8Q Kd7 46.d6 Kc6 47.Qc8) 44.g7 Ka5 (44...Kb7 45.f5 Kc8 46.g8Q Kd7 47.d6 Kc6 48.Qc8) 45.g8Q Ka4 (45...Ka6 46.Qa8) 46.Qf8 (46.Qa8) 46...Ka5 47.Qa3 1–0. BeepBeepImAJeep (2585) – MNquiri (1815), lichess.org, 2018.

3.b5 e6 4.e4 a6 5.a4 (5.Nc3 ab5 6.Bb5 c6+=) 5...ab5 6.ab5 Ra1 7.Ba1 Bd6 (7...d5 8.e5+=) 8.Nf3 (8.Qh5 g6 9.Qh4 Bf8+=) 8...Ne7 9.d4 Ng6 10.g3 Re8 11.Bg2 Kg8 12.0-0 c6 13.c4 Bf8 14.Qb3 d5 15.ed5 (15.Nbd2 dc4 16.Nc4 Bd7+=) 15...ed5= 16.cd5 cd5 (16...Qd5 17.Qd5 cd5 18.Nc3+=) 17.Nfd2 Be6 18.Re1 Qd6? (better 18...Kf7+–) 19.Re6!+– Re6 (19...Qe6 20.Bd5 Double attack (20.Bd5 Decoy); 19...Re6 20.Bd5 Double attack (20.Bd5 Decoy)) 20.Bd5 (20.Qd5?! Ne7 21.Qb3 Kh8 22.Bb7 Qd7+=) 20...Kf7 21.Nc3 (better 21.Ne4!? Qd7 22.f4 Ke7+–) 21...Ke7 (21...Qd7 22.Nde4 (22.Be6?! Qe6 23.f4 Ne7+–) 22...Ke7 23.Bb2 Re4 24.Ne4+–) 22.Nde4 (worse 22.Be6 Qe6 23.Qa3 Kf7+–) 22…Qd7 1–0. onur604 (2285) – JARANDujo (2240), lichess.org, 2020.

3.e3 Ke6 4.c4 Kf7 5.d4 e6 6.Qb3 a5 7.b5 a4 8.Qc2 d5 9.Nf3 c6 10.cd5 ed5 11.a3 Ne7 12.Nc3 Bf5 13.e4 (13.Bd3 Bd3 14.Qd3 Nc8+=) 13...de4 14.Bc4 Nd5 15.bc6 bc6 16.0-0 g6 (16...ef3 17.Qf5 Ra5 18.Qf3+–) 17.Ne4+= Bh6 18.Rfe1 Re8 19.Bd3 Nf4 20.Bf1 Kg7 21.Nh4 Be4 22.Re4 Re4 23.Qe4 Ra6?? (better 23...Nd5+=) 24.Ba6+– Na6 25.Qc6 Nc7 26.g3 Nh3 (26...Nfd5 27.Qa4 Kg8 28.Nf3+–) 27.Kg2 Ng5 28.Rc1 Nd5 29.Rc4 Ne7 30.Qb7 Qd5 (30...Ne6 31.Ra4 Nc7 32.Bc3+–) 31.Qd5 Nd5 32.Ra4 1–0. Janek – Palusca, internet, 2018.

3.e3 g6 4.c4 Kg7 5.b5 d6 (5...a6 6.Nc3+=) 6.Nf3 e5 7.Be2 Be6 8.0-0 h5 (8...Nd7 9.Nc3+–) 9.d4 e4? (better 9...Nd7!?+–) 10.Nfd2+– d5 (10...Nd7 11.Ne4 Nh6 12.Nbc3+–) 11.cd5 Bd5 12.Nc3 c6 (12...Ne7 13.Nde4 Nd7 14.Nd5 Nd5 15.Qb3+–) 13.Nde4 (13.Nce4?! f5 14.Nc3 Nf6+–) 13...Bb4 (13...Nd7 14.bc6 bc6 15.Rb1+–) 14.Nd5 cd5 15.Nc5 (15.Qb3 de4 16.Qb4 Qe7+–) 15...Bc5 16.dc5 Ne7 17.Bf3 g5 (17...Qc7+–) 18.Bh5 Qc7 (18...Rh6+–) 19.f4 Nd7 (19...Rh5 20.Qh5 g4 21.Qg4 Kf7 22.Qh5 Kf8 23.Rf3+–) 20.fg5 Rh5 21.Qh5 Rh8 22.gf6 (22.gf6 Nf6 23.Bf6 Kf8 24.Be5 Nf5 25.Rf5 Ke7 26.Qf7 Kd8 27.Qc7 Ke8 28.Bg7 Rh2 29.Rf8) 1–0. GuestJYTV – GuestVKHG, freechess.org, 2019.

3.e3 g6 4.Nf3 d5 (4...e5 5.b5+–) 5.c4+– e6 6.cd5 ed5 7.Qb3 a5 8.ba5 (8.b5 a4 9.Qc2 a3+=) 8...Nc6+= 9.a6 (9.Nc3!? Nge7 10.Nb5+=) 9...ba6= 10.Be2 Rb8 11.Qc3 Rb6 12.0-0 Bf5 13.d3 Kg7 (13...Qb8 14.Ba3 Ba3 15.Qa3=) 14.Nbd2+= Bb4 15.Qc2 Nh6 16.a3 Bd6 (16...Bd2 17.Qd2 Qd6 18.h3=) 17.e4+= Be6 18.Ng5 (18.Rab1 Qd7+=) 18...Bg8= 19.Rfe1 Rb2 20.Qb2 Be5 21.Qc1 Ba1 22.Qa1 (22.Qc6 Bd4 23.Ngf3 Bb6=) 22...de4 23.Nge4 (worse 23.Nde4 Nd4 24.Nh3 Nc2–+) 23...Nd4 24.Qc3 Bf7 25.Bf1 Re8 26.Rc1 Re7 27.Nc5 Qd6 28.Nde4 Qe5 29.h3 a5 30.Qa5 Bd5 (30...f5 31.Nd2=) 31.Qd2+= g5 32.a4 g4 33.hg4 (33.Kh1!?=) 33...Be4=+ 34.g5? (better 34.Ne4 Nb3 35.Qd1 Nc1 36.g5 Ne2 37.Be2 fg5 38.Qc1=+) 34...Ng4–+ 35.f4 Qd6 36.Ne4 (36.gf6 Kf6 37.Ne4 Re4 38.de4 Nf3 39.gf3 Qd2 40.Rc6 Ke7 41.fg4 Qe3 42.Kh1 Qe4 43.Bg2 Qf4–+) 36...Re4 37.de4 (37.Qa5 Ne6 38.g3 Rf4–+) 37...Nf3 38.gf3 Qd2 39.Rc7 Kg6 40.fg4 (40.f5 Kg5 41.Rg7 Kf4 42.Rg4 Kf3–+) 40...Qe3 (40...Qf4?! 41.Rc2 Qe4 42.Rg2 Kg5 43.Bb5–+) 41.Kg2 Qf4 42.Rc4 (42.Re7 Qg4 43.Kf2 Qf4 (43...Qg5?! 44.Re8 Qc5 45.Kg2–+) 44.Kg2 fg5–+) 42…Qg4 (42...Qg4 43.Kh1 fg5–+) 0–1. DEFFM – GuestTBVC, freechess.org, 2019.

3.e4 e6 4.b5 Ke7 5.c4 (5.Nc3 Ke8+–) 5...Qe8 (5...a6 6.d4+=) 6.a4 (6.d4 d5+–) 6...Kd8 7.Nf3 g5 (7...d5 8.e5+=) 8.h3 h5 9.Nh2 (9.d4 a6+–) 9...e5 10.Be2 Bc5 (10...Qg6 11.Nc3+=) 11.0-0 (11.d4!? ed4 12.Bd4 Bd4 13.Qd4+–) 11...g4= 12.hg4 hg4 13.Bg4 (13.Ng4?? Qh5 14.Nh6 Qh6–+) 13...d6 14.Nc3 Bg4 15.Qg4 (15.Ng4?? Qh5 16.Nh6 Qh6 17.Qh5 Qh5 18.d4 Qh2) 15...Nh6 (15...Qf7 16.a5=) 16.Qg3 (16.Qg7 f5+–) 16...Rg8 17.Qf3 Nd7 18.Nd5 Qg6 19.Kh1 (19.d4!? ed4 20.Rad1+=) 19...Rh8 20.Kg1 Rg8 (20...Nf7 21.d3=) 21.Kh1 (21.d4!? ed4 22.Rad1+=) 21...Rh8 22.d3?? (better 22.Kg1=) 22...Ng4–+ 23.Kg1 (23.Qh3 Rh3 24.gh3 Nf2 25.Rf2 Bf2 26.Ng4–+) 23...Nh2 24.Rfe1 Nf3 (24...Nf3 25.Kf1 Ne1–+) 0–1. Abdullaevich (1820) – LeandroHuizinga, lichess.org, 2020.

3.e4 g6 4.b5 Bg7 (4...Kg7 5.Nf3+=) 5.Qf3 e6 6.Nh3 d6 1–0. onur604 (2320) – freechess2018 (2015), lichess.org, 2020.

3.Nf3 d5 4.d3 e5 5.e3 (5.a3!?=) 5...Bb4–/+ 6.Nbd2 e4 (better 6...Ne7!?–/+) 7.de4= de4 8.Nd4 c5 9.N4b3 a5? (9...Bd2 10.Nd2 Bf5 11.Bc4 Ke8 12.Qh5 g6 13.Qh4=) 10.a3 (better 10.c3!? a4 11.cb4 ab3 12.Bc4 Kg6 13.bc5 Ra2 14.Ra2 ba2 15.Ne4+–) 10...Bd2= 11.Nd2 b5? (better 11...Bf5!?+=) 12.Bb5 (12.Qh5 g6 13.Qc5 Na6 14.Qb5 Rb8 15.Qc4 Be6+–) 12...Ba6 (12...Bf5 13.Qe2+–) 13.Ba6 (13.Qh5!? Kf8+–) 13...Na6 14.0-0 (14.Qh5 g6 15.Qh4 Rb8+–) 14...Ne7 (14...Qd5+–) 15.Nb3 (better 15.Qh5!? Kf8 16.Ne4+–) 15...a4 16.Nd2 Qd5 17.Qe2 (17.c4 Qd2+=) 17...Rhd8 18.Rfd1 Qf5 (18...Qe6!?=) 19.Qc4+– Kf8? (better 19...Qd5!?+–) 20.Ne4+– (worse 20.Qe4 Qe4 21.Ne4 Nd5+–) 20...Rdb8 21.Bc3 Rc8?? (better 21...Qg4+–) 22.Nd6 (22.Qa4?! Nb4 23.Qb3 Qe4 24.ab4 Ra1 25.Ra1 Nf5+–) 22...Qc2 (22...Qg6 23.Nc8 Rc8 24.Qa6 Qc2+–) 23.Qf7 1–0. amirgloo (1920) – monatica (1895), lichess.org, 2021.

3.e3 e6

4.a3 d5 5.c4 Bd6 6.Nf3 (6.cd5 ed5 7.Qh5 Ke6+=) 6...dc4 7.Bc4 Ne7 (7...a5 8.b5+=) 8.0-0 Nbc6 (8...a5 9.b5+=) 9.Qb3 h5 (9...a6 10.d4+=) 10.d4+– a5 (10...h4 11.e4 Rh5 12.Rd1+–) 11.b5 Na7 (11...a4 12.Qc2 Na5 13.Qa4 Nc4 14.Qc4+– (14.Qa8?! Nb2 15.e4 Qd7=)) 12.Nc3 White plans d5 12...c6 13.a4 cb5 (13...Nd5 14.Bd5 cd5 15.e4 de4 16.Ne4+–) 14.ab5+– Bd7 (14...b6 15.Rfc1+–) 15.d5 (15.Ne4!? Nac8+–) 15...e5+– 16.Ne4 Qb6?? (better 16...Nac8+–) 17.Nd6+– Qd6 18.Ba3 (18.Ra5?! b6 19.Ra4 Bb5 20.Bb5 Nb5 21.Ra8 Ra8 22.Qb5 Ra5+–) 18...Qa3 (18...a4 19.Qc2 Bf5+–) 19.Qa3 (better 19.Ra3 Ke8 20.Ra5 b6+–) 19...Kg6 (19...Rhc8 20.b6 Rc4 21.Qa5 Nec8+–) 20.Qe7 Bf5 21.Nh4 (21.Nh4 Kg5 22.Qg7 Bg6 23.Qg6 Kh4 24.Qg3) 1–0. BeepBeepImAJeep (2490) – leondequiri (1935), lichess.org, 2017.

4.a3 d5 5.c4 Ne7 6.Nf3 (6.Qh5 Kg8+=) 6...Nbc6 (6...Nd7 7.d4+=) 7.Be2 h5 (7...e5 8.d4 ed4 9.Nd4 Nd4 10.Bd4+=) 8.cd5 (8.c5 h4+–) 8...ed5 (8...Nd5 9.0-0+=) 9.0-0 Be6 (9...h4 10.h3+–) 10.d4 (10.b5 Na5+–) 10...Qd7 (10...a6 11.Nc3+–) 11.Nc3 Nf5 12.Na4 Bb4?? (better 12...h4+–) 13.ab4+– b5 (13...Nb4 14.Nc5 Qc8+–) 14.Nc5 Nb4 (14...Qe8 15.Bb5 Nd6+–) 15.Nd7 Bd7 16.Qb3 (16.Qc1 Rhc8+–) 16...a5 17.Bc3 Nd6 (17...Ne7 18.Rac1 Nbc6 19.Bb5+–) 18.Bb4 ab4 19.Qb4 (better 19.Ra8 Ra8 20.Qd5 Ke7 21.Qa8 g5+–) 19...Be6 (19...Ra1 20.Ra1 g5 21.Qc5+–) 20.Rac1 (20.Qc5 Rac8+–) 20...Nc4 (20...Ra7 21.Rc5+–) 21.Qb5 Rhb8 22.Qc6 Rc8 23.Bc4 (23.Nh4 Nd6+–) 23...dc4 24.d5 Bg4 25.Nd4 Rd8 26.Ne6 (better 26.d6 cd6 27.Qd5 Kg6 28.Rc4+–) 26...Rd7 27.Qd7 Kg6 28.Qg7 (28.Qg7 Kf5 29.Rc4 Bf3 30.Qh7 Ke5 31.Qc7 Kf5 32.Rf4 Kg6 33.Qg7) 1–0. BeepBeepImAJeep (2545) – leondequiri (1865), lichess.org, 2017.

4.a3 g6 5.d4 Bg7 (5...Kg7 6.Bd3+=) 6.Nd2 Ne7 7.c4 d6 8.Bd3 Nbc6 9.Ne2 e5 10.d5 e4 (10...Nb8!?+–) 11.Be4 (11.dc6?! ed3 12.cb7 Bb7+=; worse 11.Ne4 Ne5+–) 11...Ne5 12.f4 f5? (better 12...Ng4+–) 13.fe5 fe4 14.e6 Kf8 15.0-0 Nf5 16.Bg7 Kg7 17.Ne4 c6 (17...Re8 18.Qd3 Be6 19.de6 Re6 20.Nd4+–) 18.g4 cd5 19.cd5 Ne3 (19...Qb6 20.gf5 Qe3 21.Nf2 gf5+–) 20.Qd4 Kg8 (20...Kh6 21.Qe3 Qg5 22.Qg5 Kg7 23.Rf7 Kg8 24.Nf6) 21.Rf7 Qe8 (21...Nf5 22.gf5 Qg5 23.Ng5 Be6 24.Qg7) 22.Qg7 1–0. Pereira – Trainee, internet, 2020.

4.b5 Bd6 5.c4 (better 5.Nc3+–) 5...Ne7? (5...a6+–) 6.d4?? (better 6.c5 Be5 7.d4 Bd4 8.ed4+–) 6...c6+= 7.a4 (7.Nc3 cb5 8.cb5 a6+=) 7...Bc7 (7...Bb4 8.Nc3 Qa5 9.Qc2+=) 8.Nf3 d5 9.c5 (9.Nc3 Nd7+=) 9...Re8 (9...Nd7 10.Be2+=) 10.Qc2 (10.Bd3 Nd7 11.Nbd2 Kg8+–) 10...f5 (10...Nd7+–) 11.g4 (better 11.Nbd2!?+–) 11...Nd7 (worse 11...fg4 12.Ng5 Kf6 13.Nh7 Kf7 14.Ng5 Kf6 15.h4+–) 12.Ng5 (12.g5 Kg8+=) 12...Kf6=+ 13.f4 (13.bc6 bc6 14.h4–/+) 13...Nf8?? (13...h6 14.Nh3 fg4 15.Nf2–/+) 14.h4?? (14.h3 h6 15.Nf3 Kf7+–) 14...Neg6?? (better 14...fg4!? 15.Nh7 Nh7 16.Qh7 Rh8–/+) 15.Nd2 (15.Qg2!?+–) 15...h6= 16.Ngf3 fg4 17.Ne5 h5?? (better 17...Be5 18.de5 Kf7+=) 18.bc6+– Be5 19.cb7 (better 19.fe5!? Kf7 20.Bb5+–) 19...Bb7+– 20.fe5 Ke7?? (better 20...Kf7 21.Bb5 Rc8+–) 21.Bd3+– Nh8 (21...Kf7 22.Bg6 Ng6 23.Rf1 Nf4 24.Rf4 (24.ef4?! Qh4 25.Kd1 Ba6+–) 24...Kg8 25.Rf6+–) 22.Bb5 (22.c6!? Bc6 23.Qc6 Rc8+–) 22...Qc7 (22...Kf7 23.c6 Qc8 24.c7+–) 23.Be8 (better 23.c6!? Kf7 24.Ba3 Kg8+–) 23...Re8 (23...Ke8 24.Nf1+–) 24.Ba3 (better 24.Nf1!? g6 25.Ng3 Kf7+–) 24...Bc6 25.Rb1 Nf7 (25...Nfg6 26.0-0+–) 26.Kf2 (26.Rf1!? Rc8+–) 26...Nh6 27.Nf1 Kd8 (better 27...Nf5 28.Ng3 g6+–) 28.Ke1 (better 28.Ng3!? g6 29.Bb4+–) 28...Nf5+– 29.Bb4 (29.Qf2 Ng6 30.Ng3 Ng3 31.Qg3 Rf8+–) 29...Qd7 (29...Ng6 30.Kd1=) 30.a5 (30.Qf2 Ng6 31.Ng3+–) 30...Bb5?? (better 30...Ng6!? 31.a6 Ngh4=+) 31.c6!+– Bc6?? (31...Bc6 32.Bf8 Decoy; 31...Qc6 32.Qc6 Combination) 32.Bf8+– Rf8 (32...Bb5 33.Bc5 a6 34.Kf2+–) 33.Rb8 Ke7 (33...Kc7 34.Rf8 Qe7 35.Rh8+–) 34.Qc5 (34.Qc5 Kf7 35.Qf8 Kg6 36.Kf2+–) 1–0. Knight,Timothy – Pattni,Kishan (1650), The Four Nations Chess League, 2011.

4.c4 d5 5.b5 c5 6.Nf3 (6.Bd3 Ne7=) 6...Bd6 (6...a6 7.cd5 ed5 8.Nc3=) 7.Be2 Ne7 8.0-0 h5 (8...e5 9.d4 cd4 10.cd5 de3 11.fe3=) 9.d4+– cd4 10.Nd4 Bd7 (10...dc4 11.Qc1+= (11.Bc4?! Bh2 12.Kh1 Bc7=)) 11.cd5 (11.Bh5 g6 12.c5 Bh2 13.Kh2 Rh5 14.Kg1 Qh8–+) 11...ed5 (11...Nd5 12.h3+– (worse 12.Bh5 g6–/+)) 12.Nc3 (12.Bh5 g6 13.Ba3 Qc7 14.Bd6 Qd6 15.Bg6 Ng6–/+) 12...Be6 (12...Bg4 13.f3 Bc8 14.Rc1+–) 13.Ne6+– (13.Bh5?! g6 14.Ne6 Bh2 15.Kh2 Rh5 16.Kg1 Qh8 17.Qh5 gh5+–) 13...Ke6 14.Bf3 Bb4? (14...Bc7 15.e4 (15.Bh5?! Bh2 16.Kh2 g6+=) 15...Qd6 16.g3+–) 15.Qb3 (15.Nd5!? Nd5 16.Qb3 a5+–) 15...Bc3 16.Bc3 Qb6 (16...Nd7 17.e4 Nc5 18.ed5 Kf7 19.Qa3+–) 17.Rad1 Rd8 (17...Qd6 18.Bb4 Qd7 19.Be7 Ke7 20.Bd5+–) 18.a4 Nd7 (18...a6 19.e4 Kd7 20.ed5+–) 19.Bb4 (better 19.Rd5 Nc5 20.Rc5 Kd7 21.Rh5+–) 19...Ne5 (19...Nc5 20.Bc5 Qc5 21.e4+–) 20.Be2 (better 20.e4+–) 20...Nf5? (better 20...a5 21.Ba3 Nf5+–) 21.a5 (21.Bh5?! g6 22.e4 Nd4 23.Qh3 Kf7+–) 21...Qc7 22.e4 (22.Bh5?! Qc4 23.Rb1 Qb3 24.Rb3 d4+–) 22...Ne3 (22...Ne7 23.f4 g6 24.fe5 Qe5 25.ed5 Kf7 26.d6 Kg7 27.de7+–) 23.Qe3 (better 23.fe3 Kf7 24.ed5 Kg8+–) 23...de4 (23...Kf7 24.ed5 Kg8 25.Qh3+–) 24.Qe4 (better 24.Qb3 Nc4+–) 24...f5 25.Qe3 Rd1 (25...f4 26.Qf4 Rd1 27.Rd1+–) 26.Rd1 Rd8 27.Re1 (27.Rc1 Qd7 28.Bc3 Qd6 29.Bc4 Kf6+–) 27...Kf6 (27...g5 28.Bc4! Kf6 29.h4+–) 28.Bc3 (28.f4 Kg6 29.fe5 Kh7+–) 28...Re8 (28...g5 29.h4 f4 30.hg5 Kg5 31.Qe5 Qe5 32.Be5+–) 29.f4 Kg6 30.Be5 Qc4 (30...Re5 31.Qe5 Qe5 32.Bh5 Kf6 33.fe5 Ke7+–) 31.Bc4 (31.Bc4 Re7 32.Qg3 Kh7 33.Qg5 Rf7 34.Bf7 h4 35.Qh4; 31.Qg3 Kf7 32.Qg7 Ke6 33.Bc4) 1–0. BeepBeepImAJeep (2540) – leondequiri (1915), lichess.org, 2017.

2.Bb2 Nh6

3.a3 Nf7 4.e3 e5 5.h4 h6 (5...a5 6.b5=+) 6.h5 (6.d4 ed4 7.Bd4 a5=) 6...Nc6 (6...d5 7.d4=) 7.Bd3 (7.Nf3 d5=) 7...d5 8.c4 (8.Ne2 Be7=) 8...e4=+ 9.Bc2 Be6 (9...Nfe5 10.cd5 Qd5 11.Be5 Ne5 12.Nc3 Nd3 13.Kf1=) 10.cd5= Bd5 11.Nc3 f5 (11...Nce5 12.Ne4 (12.Be4? Be4 13.Ne4 Nd3 14.Ke2 Nb2–+) 12...a5 13.d4=) 12.Nd5 (12.g4 a5 13.ba5 Nce5 14.gf5 Ng5+=) 12...Qd5= 13.Bb3 (13.Ne2 a5 14.Nf4 Qd7+=) 13...Qd7 14.Nh3 0-0-0 (14...Nfe5 15.Nf4 Nd3 16.Nd3 Qd3+=) 15.Nf4+= Kb8 (15...Ng5!?+=) 16.Be6+– Qe8 17.Bf5 Nfe5 (17...Ng5 18.Qc2+–) 18.Be5 (18.Rc1 Nd3 19.Nd3 ed3+–) 18...Ne5 (better 18...Qe5!? 19.Bg6 Be7+–) 19.Be4+– Bd6 20.d3 (20.Rc1 Nf7 21.Qc2 Bf4 22.ef4 Nd6+–) 20...Rf8? (better 20...Nd3!? 21.Qd3 Bf4+–) 21.0-0+– Nd7 (21...Qd7 22.Qb3 Rfe8 23.b5+–) 22.Ng6 Rf6 (22...Rf7 23.Qc2+–) 23.Qg4 (23.Rc1 Rf7+–) 23...Ne5 (23...Rf7 24.Bd5 Rf6 25.d4+–) 24.Qh3 (24.Ne5 Qe5 25.f4 Qe7+–) 24...Ng6 25.Bg6 Qe5 (25...Qa4 26.Rfc1+–) 26.d4 Qe7 (26...Qd5 27.Rad1 Qb3 28.Rd3+–) 27.Rac1 c6 28.Rc4 a6 29.Rc2 Bc7 30.Rb1 Rdf8 (30...Bd6 31.Qg4+–) 31.a4 Qd6 (31...Qe6 32.Qh4+–) 32.b5 cb5 33.ab5 ab5 (33...a5 34.Rbc1 Bb6 35.Qg4+–) 34.Rb5 b6 (34...Re6 35.Rbc5 Re7 36.R5c4+–) 35.Rb1 Qd5 (35...Qe6 36.Qh4+–) 36.Rbc1 Qd6 (36...Rc8 37.Bd3+–) 37.Rc7 Rf2 (37...Qc7 38.Rc7 Kc7 39.Qg3 Kc8+–) 38.Rc8 (38.Rd7 Rf1 39.Rf1 Rf1 40.Kf1 Qc6 41.Qg3 Kc8 42.Ra7 Qc4 43.Kg1 Qc6 44.Bf5 Kd8 45.Qb8 Qc8 46.Qc8) 38...Kb7 39.Be4 Ka6 40.Rf8 Rf8 41.Ra1 Kb5 42.Qg4 Qb4 43.Qe2 (43.Qe2 Qc4 44.Rb1 Ka6 45.Qc4 b5 46.Qb5 Ka7 47.Qb6; 43.Bd3 Kc6 44.Qe4 Kd6 45.Qe5 Kc6 46.Be4 Kd7 47.Ra7 Kd8 48.Qb8) 1–0. FeegLood (2795) – pashpash (2410), lichess.org, 2016.

3.a3 Nf7 4.e4 g6 5.Nf3 Bg7 6.Bc4 0-0 (6...Nd6 7.Bd3+=) 7.Qe2 d6 8.d4 Bg4 9.h3 Bf3 10.Qf3 Nd7 11.Nd2 (11.h4 Nb6 12.Bb3 e5+–) 11...c6 (11...e5 12.c3+=) 12.g4 (12.Be6!?+–) 12...e5+= 13.d5 c5 (13...Nb6 14.dc6 Nc4 15.Nc4=) 14.h4+= Rc8 15.Bb3 (15.h5 g5+–) 15...cb4 (15...Bh6 16.c4+=) 16.ab4+– Qb6 17.Ra4 a6 18.h5 g5 19.c3 h6 20.Nc4 Qc7 21.b5?? (better 21.Ne3+–) 21...ab5–+ 22.Qf5?? (22.Rb4 bc4 23.Bc4–+) 22...ba4 23.Ba4 Rcd8 (23...Nb6!? 24.Nb6 Qb6 25.Bc1–+) 24.Bb3 (24.0-0 Qc4 25.Bd7 Rd7 26.Qd7 Qe4–+) 24...Nc5 25.Ba2 (25.Bc2 Ra8 26.0-0 Na4 27.Ba4 Qc4–+) 25...Nd3 (better 25...Ra8 26.Ba3–+) 26.Kd2 Nf4 27.Ba3 (27.Rb1 b5 28.Ne3 Ra8–+) 27...Ra8 (better 27...b5 28.Ne3 Qa5–+) 28.Bd6 (28.Rb1–+) 28...Nd6 (28...Ra2 29.Ke1 Qc4 30.Qh7 Kh7 31.Kd1 Qd3 32.Ke1 Qe2) 29.Nd6 Qd6 (29...Ra2 30.Kc1 Qc3 31.Kd1 Qd2) 30.Bc4 Rfc8 (better 30...Qc5 31.Qf4 ef4 32.Rc1 Qf2 33.Kd3–+) 31.Bb3 Ra3 (31...Qc5 32.d6 Kf8 33.Qc8 Rc8 34.Kd1 Qc3 35.Bc2 Qc2 36.Ke1 Qe2) 32.Qc8 Kh7 (32...Bf8 33.Rb1 Qb6 34.d6 Rb3 35.Qc4 Kh8 36.Rb3 Qf2 37.Kd1 Qg1 38.Kc2 Qg4 39.Rb7 Qg2 40.Kb1 Qg1 41.Kc2 Qf2 42.Kb3–/+) 33.Qf5 Kg8?? (33...Kh8 34.Qc8 Bf8 35.Rb1–+) 34.Qc8 Kh7?? (34...Bf8!? 35.Qb7 Qc5 36.Rf1–+) 35.Qf5 Kg8?? (better 35...Kh8 36.Qc8 Bf8–+) 36.Qc8= ½–½. sirgeshdb – StefanSBerlin (1755), lichess.org, 2020.

3.b5 b6 4.a4 c5 5.c4 d6 (5...e5 6.e4=) 6.e3+= Nd7 (6...a6 7.d4=) 7.Nf3 (7.d4 a6+=) 7...Nb8 (7...e5 8.d4+=) 8.Be2 Qc7 (8...e5 9.0-0+=) 9.0-0 Bd7 (9...a6 10.Nc3+–) 10.d4 Bc8 (10...a6 11.Nc3+–) 11.dc5 bc5 12.Nc3 Bb7 (12...e6 13.Bd3+–) 13.a5 Bc8 (13...e6 14.a6 Bc8 15.Nd2+–) 14.a6 (better 14.Re1+–) 14...Nf7?? (better 14...e6!?+–) 15.Nd5 (better 15.Qd5 Nc6 16.Qc6 Qc6 17.bc6+–) 15...Qd8 16.Nd2 (better 16.Ne7 Be7 17.Qd5+–) 16...Ne5? (better 16...Nd7+–) 17.Be5 (17.f4 Nf7 18.Bf3 Na6+–) 17...fe5 18.Bf3 g6 (18...Be6+–) 19.Nc3 Qc7 (19...Bg4 20.Bg4 Nd7 21.Be6+–) 20.Ba8 Bd7 (20...Qd7 21.Nd5 Bg7 22.b6 Na6 23.Qa4 Qa4 24.Ra4 ab6 25.Nb6+–) 21.Be4 (21.Nd5!? Qd8+–) 21...Bg7 (21...e6 22.Qb3 Qb6 23.Na4+–) 22.Nd5 Qd8 (22...Qc8 23.b6 Nc6 24.Nf3+–) 23.Qc2 (23.b6!? 0-0 24.ba7 Nc6+–) 23...Qc8 (23...e6 24.Nc3+–) 24.Bg6 (better 24.b6 Nc6+–) 24...Kd8 (24...hg6 25.Qg6 Kf8 26.Ne7+–) 25.Be4 e6 (25...Bg4 26.b6 Qd7 27.f3+–) 26.Nc3 (better 26.Nb6! ab6 27.a7 d5+–) 26...Qc7 (26...Ke7 27.Rfb1+–) 27.Rfb1 Bf6 (27...Qb6 28.Na4 Qc7 29.b6 ab6 30.Nb6+–) 28.Na4 White plans b6 (better 28.b6 Qc8 29.Bb7 Qb7 30.ab7 ab6 31.Rb6 Kc7+–) 28...Rg8 (28...Bc8+–) 29.b6 ab6 30.Nb6 Qa7 31.Nd7 Kd7 32.Rb7 Qb7 33.Bb7 Kc7 34.a7 Kb7 35.a8Q Kc8 36.Qb3 Kd7 (36...Rg2 37.Kg2 Kd7 38.Qbb8 e4 39.Qab7) 37.Qbb7 (37.Ra7 Ke8 38.Qbb8 Bd8 39.Qd8) 37...Ke8 38.Qab8 Bd8 39.Q7c7 (39.Qd8 Kd8 40.Ra8) 39...Kf8 (39...Rg2 40.Kg2 e4 41.Qbd8) 40.Qbd8 1–0. BeepBeepImAJeep (2685) – BFischer94 (1660), lichess.org, 2015.

3.b5 b6 4.a4 c5 5.Nf3 a5 (5...d5 6.c4=) 6.e3 (6.e4 e6+=) 6...Bb7 (6...d5 7.d4+=) 7.c4 (7.d4 e6+=) 7...d6 (7...e5!?=) 8.Be2+= Qd7 (8...e5 9.0-0+=) 9.0-0 (9.d4 e5+=) 9...e5 (9...e6 10.Nc3+=) 10.d4 Be7 11.dc5 dc5 12.Nc3 Qd1 (12...0-0 13.Qc2+–) 13.Rfd1 Nd7 14.Nd2 Rd8 15.Bf3 (15.Nd5 Bd6+–) 15...Bf3+= 16.Nf3 g5 (16...Nf5 17.Nd5+=) 17.Nd5+– Nf7? (better 17...Nf5+–) 18.Nc7+– Kf8 19.Ne6 Ke8 20.Nd8 Kd8 21.Rd2 (better 21.Rd5 Kc7 22.Nd2+–) 21...Re8? (better 21...Kc7+–) 22.Rad1 Kc8 (22...Bd6 23.Rd6 Nd6 24.Rd6 Ke7+–) 23.Rd7 Rd8 24.Rd8 Bd8 25.Nd2 Nh6 (25...h5 26.Ne4+–) 26.Ne4 Nf5 (26...g4 27.Nd6 Kc7 28.Ne8 Kc8 29.Rd6+–) 27.Nd6 Kc7 (27...Nd6 28.Rd6 g4+–) 28.Nf5 h5 (28...h6 29.Nh6 Be7 30.Ng8+–) 29.e4 g4 (29...h4 30.g3 hg3 31.fg3+–) 30.g3 Kb7 31.Bc1 (31.Rd8 Kc7 32.Rd6 Kc8 33.Rf6 Kc7 34.Be5 Kc8 35.Rf7 h4 36.gh4 g3 37.hg3 Kd8 38.Bc7 Ke8 39.Nd6) 31...Bc7 32.Bh6 Bd8 33.Rd8 Kc7 34.Rd6 Kb7 35.Bf8 Kc7 (35...Kc8 36.Ne7 Kc7 37.Nd5 Kc8 38.Nb6 Kb7 39.Rd7 Kb6 40.Be7 f5 41.Bd8) 36.Be7 (36.Rc6 Kb8 37.Bd6 Kb7 38.Rc7 Kb8 39.Ne7 Ka8 40.Nc6 f5 41.Ra7) 36...Kb7 (36...h4 37.Ne3 Kb7 38.Nd5 Ka8 39.Nb6 Kb8 40.Rd7 hg3 41.Bd6) 37.Bf6 Kc7 (37...h4 38.Ne3 Kc7 39.Rd8 hg3 40.Nd5 Kb7 41.Rd7 Kc8 42.Nb6 Kb8 43.Be5) 38.Bh4 (38.Bd8 Kc8 39.Ne7 Kb7 40.Rb6 Ka8 41.Nc6 h4 42.Rb8) 38...Kb7 (38...Kc8 39.Bd8 h4 40.Ne7 Kb7 41.Rb6 Ka8 42.Nc6 hg3 43.Rb8) 39.Kf1 (39.Bd8 h4 40.Rc6 Ka8 41.Bb6 hg3 42.Nd6 gh2 43.Kh1 g3 44.Rc8) 39...Kc7 40.Ke2 (40.Bd8 Kc8 41.Ne7 Kb7 42.Rb6 Ka8 43.Nc6 h4 44.Rb8) 40...Kb7 (40...Kc8 41.Bd8 Kb7 42.Rc6 h4 43.Nd6 Ka8 44.Bb6 hg3 45.Rc8) 41.f3 (41.Bd8 Kb8 42.Ne7 Ka7 43.Nc6 Ka8 44.Rd7 h4 45.Ra7) 41...Kc7 42.fg4 (42.Bd8 Kc8 43.Ne7 Kb7 44.Rb6 Ka8 45.Nc6 gf3 46.Kf3 h4 47.Rb8) 42...Kb7 (42...Kb8 43.gh5 Ka8 44.h6 Kb8 45.h7 Kb7 46.h8Q Kc7 47.Qd8 Kb7 48.Rd7) 43.Kf2 (43.g5 Kb8 44.g6 Ka8 45.g7 Kb7 46.g8Q Kc7 47.Qf7 Kc8 48.Rd8) 43...Kc7 (43...Kb8 44.gh5 Kb7 45.h6 Kb8 46.h7 Kb7 47.h8Q Kc7 48.Qd8 Kb7 49.Rd7) 44.g5 Kb7 (44...Kb8 45.g6 Ka7 46.g7 Kb7 47.g8Q Kc7 48.Qf7 Kc8 49.Rd8) 45.g6 Kc7 (45...Kb8 46.g7 Kb7 47.g8Q Kc7 48.Qf7 Kc8 49.Rd8) 46.g7 Kb7 47.g8Q Kc7 48.Qf7 Kc8 49.Rd8 1–0. BeepBeepImAJeep (2685) – BFischer94 (1685), lichess.org, 2015.

3.b5 d6 4.e3 (4.Nc3 a6 5.a4 Nd7+=) 4...Nf7 (4...e5 5.Nc3+=) 5.Nf3 e5 6.a4 (6.d4 Be7 7.Nc3 0-0+=) 6...Bg4 (6...Be7 7.Nc3+=) 7.Be2 Bh5 (7...Be7 8.Nc3+–) 8.Ne5 (8.Nc3!?+–) 8...Be2+= 9.Nf7 Bd1 10.Nd8 Bc2 11.Nb7 Bb1? (better 11...Be4!? 12.Na5 Bg2+=) 12.Rb1+– Be7 13.Rc1 (better 13.Ke2+–) 13...a6? (better 13...Kd7+–) 14.Rc7 ab5 (14...Nd7 15.ba6 Nf8+–) 15.Rc8 Kf7 (15...Kd7 16.Rh8 ba4 17.Ke2+–) 16.Rh8 ba4 17.Ba3 d5 18.Nd8 Kg6 19.Be7 a3 (19...Nc6 20.Nc6 Rh8 21.Ke2+–) 20.Nc6! a2 (20...Nc6 21.Ra8 Pinning (21.Ra8 Deflection; 21.Ra8 Clearance)) 21.Ke2 (21.Rb8? Rb8 22.Ke2 Rb1–+) 21...Nc6 (21...a1Q 22.Ra1 (22.Rb8 Qa6 23.Kf3 Qc6 24.Ra8 Qa8–/+) 22...Ra1 23.Rb8+–) 22.Ra8 Ne7 23.Ra2 Nc6 24.Rc1 Nb4 25.Ra4 1–0. DEFFM – GuestMKFY, freechess.org, 2019.

3.b5 Nf7 4.e3 e5 5.d4 Bd6 6.Nf3+– e4 7.Nfd2 Bb4 (7...f5 8.Nc3+–) 8.c3 Ba5 (8...Be7 9.c4+–) 9.Ne4 d5 10.Nc5 c6 (10...0-0 11.Nd2+–) 11.Bd3 cb5 12.Qc2 b6 (12...Nc6 13.Nd2+–) 13.Bb5+– Bd7?? (better 13...Kf8 14.Nb3 Nd6+–) 14.Nd7 Nd7 15.Qf5 Nh6 (15...Nd6 16.Qe6 Qe7 17.Bd7 Kd8 18.Qe7 Ke7+–) 16.Qe6 Qe7 (16...Kf8 17.Bd7 Nf7 18.Ba3 Kg8 19.Be7+–) 17.Bd7 Kd8 18.Qd5 Rb8 (18...Qd7 19.Qa8 Qc8 20.Qa7+–) 19.Bb5 (better 19.Be6 Ke8 20.Qc6 Kd8+–) 19...Kc7 (19...Kc8 20.Ba3 Qb7 21.Qc4 Kd8 22.0-0+–) 20.Ba3 Bc3 21.Nc3 Qa3 (21...Rb7 22.Be7 Nf5 23.Ba6 Ne7 24.Nb5 Kc8 25.Qd6 Nc6 26.Qc7) 22.Qd7 1–0. DEFFM – GuestBPNR, freechess.org, 2019.

3.d4 e5 4.a3 (4.b5 a6=) 4...ed4 5.Nf3 a5 (5...c5 6.bc5 Nc6 7.Nd4 Bc5 8.Nb3=) 6.b5+= (worse 6.Qd4 ab4 7.ab4 Ra1 8.Ba1 Nc6 9.Qe4 Qe7 10.Qe7 Be7=+) 6...c5 7.c3 dc3 8.Nc3 d6 9.e4 Be6 10.Nd5 Nd7 (10...Be7 11.Nf4 (worse 11.Ne7 Qe7 12.Be2 Nd7=+) 11...Bf7 12.Qc2+=) 11.Bc4+– Bf7 12.0-0 Nb6 13.Nb6 Qb6 14.Bf7 Nf7 15.a4 Qc7 16.Rc1 Ne5 17.Nh4 Qf7 18.Nf5 Rd8 (18...Nc4 19.Ba1+=) 19.Ne3+– Be7 20.f4 Nd7 21.Nf5 0-0 22.Qd5 (22.Bc3!?+–) 22...Rfe8+= 23.Qb7 Bf8 24.Bc3 (24.Rf3 Rb8 25.Qc6 Nb6+=) 24...Rb8= 25.Qc6 Nb6 26.Nd6 (26.e5 Na4 27.Nd6 Bd6 28.ed6 Rec8=) 26...Bd6= 27.Qd6 Na4 28.Ba5 Rb5 29.Qa6 Qd7 30.e5 Re6 ½–½. tomrules99 (1940) – Panza (2325), ChessWorld.net, 2004.

3.d4 e6 4.e4 (4.a3!?=) 4...Bb4+= 5.c3 Bf8 (5...Be7 6.Qh5 Nf7 7.Ba3+=) 6.Nh3 (6.Nf3 d5 7.Bd3 Bd6+=) 6...Nf7 (6...d5 7.Qh5 g6 8.Qe2–/+) 7.Bd3 Qe7 (7...d5 8.Qh5+=) 8.0-0= g6 9.Qa4 (9.Nf4 Nc6=) 9...Bg7 (9...c6 10.c4+=) 10.Ba3 Qd8 11.Nd2 c6 12.Qb3 (12.f4 d6+=) 12...d6 13.f4 0-0 (13...b5 14.Nf3+=) 14.f5 e5 (14...gf5 15.ef5 ef5 16.Rae1+=) 15.de5 (15.fg6 hg6 16.de5 fe5 17.Bc4+=) 15...de5 (15...fe5 16.fg6 hg6+=) 16.Bf8+/– Bf8 (16...Qd3!? 17.Bg7 Kg7+/–) 17.fg6 (17.Ng5 Qb6 (worse is 17...fg5 18.fg6 Qb6 19.Qb6 ab6 20.gf7 Kg7 21.Bc4+–) 18.Qb6 ab6+–) 17...hg6 18.Ng5! Do you see the mate threat? 18...Qe8?? 19.Rf6 Nd7 20.Rg6 Bg7 21.Rf1 Nc5 22.Rf7 Nb3 23.Rfg7 Kh8 24.Rh7 1–0. b4_player – opponent, gamecolony.com, 2007.

3.e3 d6 4.Bd3 Nf7 (4...Nc6!?=) 5.Nf3+= Nc6 (5...d5 6.0-0+=) 6.b5+– Nb4 7.Bc4 d5 (7...Bf5!? 8.Bb3 c6+–) 8.Bb3+– c5? (better 8...d4 9.ed4 a6+–) 9.a3 c4 10.Ba4 (10.ab4?! cb3 11.cb3 e5=) 10...Nd3 (10...Nc2 11.Qc2 e6 12.0-0+–) 11.cd3 cd3 (11...Nd6 12.Nc3 e6 13.0-0+–) 12.Nc3 (12.Qb3 e6+–) 12...e6 13.0-0 Be7 (13...Nd6 14.Qb1+–) 14.Qb1 0-0 15.Qd3 b6 (15...Nd6 16.Bc2 g6 17.e4+–) 16.e4 de4 17.Qe4 Rb8 18.d4 Nd6 19.Qd3 Bb7 (19...Qe8 20.Rac1+–) 20.Bb3 1–0. DEFFM – GuestVPQW, freechess.org, 2019.

3.e3 e5 4.a3=.

3.e3 Nf5 4.Nc3 g6 (4...d5 5.Qh5 g6 6.Qf3=) 5.Nf3 (5.e4 Nd4+=) 5...Bg7 (5...d5 6.d4=) 6.e4+= Nd6 7.b5 0-0 8.h4 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 b6 12.h5 Qe8? (better 12...g5!?+=) 13.Ba3 (13.Qa7 Bb7+–) 13...Nf7 (better 13...c5!? 14.d4 Bb7+–) 14.hg6+– hg6 15.Nh4 Nh6 16.Nd5 f5 17.Qa2 (better 17.e5 Kh7 18.Be7+–) 17...d6?? (17...Kh7 18.Qc4 c6 19.Ne7 cb5+–) 18.Nf6 Kh8 19.Ne8 Re8 20.Ng6 Kh7 21.Qf7 Bd7 22.Nf4 Kh8 (22...fe4 23.Rh6! Kh6 24.Qg6) 23.Rh6! Bh6 (23...Bh6 24.Ng6) 24.Ng6 1–0. Janek – Nicolas, internet, 2016.

3.e4 c6 4.Bc4 (4.Nc3 e5+=) 4...Na6 5.a3 Nc7 6.Nc3 e6 (6...e5 7.Nf3 d5 8.Bb3=) 7.Nf3 (7.Qh5 g6 8.Qe2 d5+=) 7...d5 8.Bb3 Be7 9.d4 (9.0-0 0-0+=) 9...0-0 10.Qd3 (10.0-0 a5=) 10...b6 11.h3 (11.Ne2 a5 12.0-0 Ba6=) 11...Nf7 12.Ne2 a5 (12...Ba6 13.c4=+) 13.c3 (13.ed5 ed5 (worse 13...Nd5 14.c4+–) 14.0-0 Re8=+) 13...Nd6 14.ed5 ed5 (worse 14...Nd5 15.c4 Nc7 16.0-0+=) 15.0-0 Ba6 16.Qc2 Re8 17.Rfe1 (17.ba5 ba5 18.Rfe1 Rb8=+) 17...Bc4 18.Ng3 Bb3 19.Qb3 Nc4 20.Nf5 Bf8 21.Re8 Qe8 (21...Ne8 22.Re1=+) 22.Re1 Qd7 23.Ne3 b5 24.Bc1 Ne8 25.Nc4 bc4 26.Qc2 ab4 27.ab4 Bd6 28.Bd2 Nc7 29.Nh4 g6 30.Qb2 Nb5 31.Ra1 (31.Qc2 Kf7=+) 31...Qb7 (31...Ra1 32.Qa1 Kg7 33.Qe1=+) 32.Nf3 Kf7 33.Ne1 Re8 34.Nf3 Ra8 35.Ne1 Ra6 36.Nc2 Bb8 37.g3 h5 38.Kg2 h4 (38...Ra1 39.Qa1 Qe7 40.Qe1=+) 39.Ra6= Qa6 40.Be1 (40.gh4!? Qb7 41.Ne3=) 40...hg3=+ 41.fg3 Qa4 (41...Qc8 42.Ne3=+) 42.Ne3 Qb3 43.Qc1 Qa2 44.Qc2 Qa7 45.h4 Qe7 46.Bf2 (46.Qe2 Nd6 47.Qf3 Qe6=) 46...Na3 (46...f5 47.h5 Qe6 48.hg6 Kg6 49.Kf1=+) 47.Qa4 (47.Qe2!?=) 47...Qe4–/+ 48.Kg1 Nb5 49.Qa8 (49.Nf1–/+) 49...Qe8 (better 49...Bg3!? 50.Qb7 Kf8 51.Qc8 Ke7 52.Qb7 Kd8 53.Bg3 Qe3 54.Kh2 Qe2 55.Kg1 Qd1 (worse 55...Nc3 56.Qc7 Ke8 57.Qc6 Kf7 58.b5–/+) 56.Kg2 Qc2 (56...Nc3?! 57.Qc7 Ke8 58.Qc6 Kf7 59.Qc7 Kg8 60.Qd8 Kg7 61.Qe7 Kg8 62.Qd8 Kh7 63.Qe7 Kg8 64.Qd8=) 57.Kh3 Qf5 (57...Qc3?! 58.Qc6 Qf3 59.Qb5=) 58.Kh2 Qe6–+ (58...Nc3?! 59.Qc7 Ke8 60.Qc6 Kf8 61.Qd6 Kg8 62.Qd8 Kf7 63.Qc7 Ke6 64.Qd6 Kf7 65.Qc7 Kg8 66.Qd8 Kg7 67.Qe7 Kh8 68.Qe8 Kh7 69.Qe7 Kg8 70.Qd8=)) 50.Qb7 (50.Nd5 cd5 51.Qd5 Kf8 52.Qc4 Nd6=+) 50...Ke6 51.Nd1 (51.Be1 Bc7 52.Kf2 Kd6=+) 51...Nd6 (51...Bc7!? 52.Ne3 f5–+) 52.Qh7= Qf7 (52...Ne4 53.g4=) 53.Qf7 Nf7 54.Kg2 Nd6 55.Kf3 Ne4 56.Be1 Bd6 (56...g5 57.hg5 Ng5 58.Kg4=) 57.Ne3 f5 58.g4 fg4 59.Ng4 Bc7 60.Ne3 Nd6 61.Kg4 Nf7 62.Bd2 Bd8 63.Ng2 Nd6 64.Nf4 White prepares the advance h5 64...Kf7 65.h5 gh5 66.Nh5 Ne4 67.Be1 Bc7 68.Kf5 Bd6 69.Nf4 Bf4 70.Kf4 Ke6 71.Kg4 Ke7 72.Kf5 Kd6 73.Kf4 Kc7 74.Ke5 Kb6 75.Ke6 Ka6 76.Kd7 Kb6 77.Ke6 Kb5 78.Kd7 Ng5 79.Kc7 Nf3 80.Bf2 Nd2 81.Kb7 Nb1 (81...Ne4 82.Be1=) 82.Be1 Na3 83.Bd2 (83.Kc7 Nb1=) 83...Nc2 (83...Nb1 84.Be1=) 84.Bc1 (84.Kc7 Na3=) 84...Nd4 85.cd4 c3 86.Kc7 Kb4 87.Kc6 Kc4 88.Bf4 c2 89.Bd2 Kd3 90.Bg5 Kd4 91.Kb5?? (better 91.Kd6=) 91...Kc3–+ 92.Ka4 d4 93.Ka3 d3 94.Bf6 Kd2 95.Bg5 Kd1 96.Kb2 d2 (96...d2 97.Bd8 c1Q 98.Kb3 Ke2 99.Ba5 d1Q 100.Kb4 Qd3 101.Bc7 Qca3) 0–1. Herzog,Ferdinand – Hadjieff,Dieter, AUT–ChT2O, 1995.

3.e4 e5=.

3.e4 Nf7 4.Nf3 e6 5.a3 Be7 6.Be2 d5 7.ed5 ed5 8.0-0 0-0 9.c4 dc4 10.Bc4 Bg4 11.h3 Bf3 (11...Bh5 12.Qb3=) 12.Qf3+= c6 13.Qb3 Nd7 14.Re1 Nb6 15.Be6 Nc8 16.Nc3 Ncd6 17.Ne4 Kh8 18.Nc5 Ng5 19.f4 b6 20.fg5 bc5 21.bc5 Nb5 22.a4 (better is 22.Qe3!? fg5 23.Bc4+/–) 22...Bc5= 23.Kh1 Nd4 24.Qc4 Qd6 (24...Rb8!? 25.Bc3 Qd6=) 25.Rac1+= Bb6 (25...Ne6? 26.Re6 (26.Qe6?! Qd2 27.gf6 Qb2 28.fg7 Qg7 29.Rc5 Rf6+=) 26...Qd2 27.Re2 (27.Qc5?! Qb2 28.Rf1 f5+=) 27...Qg5 28.Qc5 Qc5 29.Rc5+–) 26.gf6 gf6 (26...Rf6!? 27.Bd4 Bd4 28.Qc6 Qf8+=) 27.Bd4+/– Bd4 28.Qc6 Qf4 29.Rf1 (29.Qe4!? Qe4 30.Re4+–) 29...Qd2+/– 30.Rcd1 Qc3 31.Qe4 Be5 (better is 31...Rad8!?+/–) 32.Rd7+– f5 33.Bf5 Bg7 34.Qg4 Rae8?? (better is 34...Qf6+–) 35.Qh5 (35.Ra7 Re1 36.Qf3 Qf3 37.gf3 Rf1 38.Kg2 Rc1–+ (38...Rf5?! 39.Ra8 Bf8 40.Kf1–/+)) 35…h6 1–0. Mamuzic,Mirko (2265) – Szabados,Karoly (2075), Subotica City–ch, 2008.

3.d4 Nf7

4.e3 c6 5.Nf3 Na6 6.a3+= Nc7 7.Bd3 b5 8.0-0 a6 9.Nbd2 d5 10.e4 e6 11.e5 f5 12.Nb3 Bb7 13.Qd2 Be7 14.Nc5 Rb8 15.a4 Bc5 16.bc5 h6 17.h4 g5+= 18.g3 g4 19.Ne1 h5 20.Ng2+/– Ke7 21.Nf4 Qg8 22.Qb4 Rh7 23.ab5 Nb5 24.c4 Nc7 25.cd5 Nd5 26.Nd5 ed5 27.Bf5 Rg7 28.Bc1 Qc8 29.Bc8 Rc8 30.Qb7 Kd8 31.e6 Nh6 32.Bg5 Ke8 33.Qc8# 1–0. mtr – guest, internet, 2009.

4.e3 e5 5.a3=.

4.e3 e6 5.a3 d5=.

4.e3 e6 5.b5 a6 6.c4 c6 7.Nc3 Bb4 (7...ab5 8.cb5 Ba3 9.Ba3 Ra3 10.Qd2=) 8.Nf3 d5 9.a3 Ba5 10.bc6 bc6 (10...Nc6 11.cd5 ed5 12.Bd3+=) 11.Bd3+– 0-0 12.Qc2 f5 13.0-0 Bc3 (13...Nd7 14.a4+–) 14.Qc3 (14.Bc3 a5 15.c5 Ba6+–) 14...g6 (14...Nd7 15.Rfb1+–) 15.Rab1 (15.h4 Nd7+–) 15...a5 16.a4 Nd7 (16...Re8 17.Rfc1+–) 17.cd5 cd5 18.Qc6 Rb8 19.Qc2 (19.Qe6 Nde5 20.Qe5 Ne5 21.Ne5 Rf6–/+) 19...Kg7 20.Rfc1 (20.h3 Rh8+–) 20...Qe7 (20...Re8 21.h3+–) 21.Qc3 (21.Qc7!? Re8+–) 21...Qd8 22.Ba3 Re8 23.Nd2 Bb7?? (better 23...Ra8+–) 24.Qc7 Nf6 (24...Bc8 25.Rb8 Qc7 26.Rc7 Nb8+–) 25.Rb7 Rb7 26.Qb7 Ng8 (26...Qb8 27.Qa6 Qa8+–) 27.Rc7 Ne7 (27...Ngh6 28.Bb5 Rh8+–) 28.Be7 Re7 29.Re7 (29.Re7 Qf8 30.Qd7+–) 1–0. Janek – fixiq, internet, 2017.

4.e3 e6 5.b5 Be7 6.Nf3 d5 7.c4 0-0 8.Bd3 dc4 9.Bc4 a6 10.a4 ab5 (10...Nd6 11.Bd3=) 11.ab5 Ra1 12.Ba1 Qd6 (12...Qd7 13.Bd3+=) 13.0-0 Nd7 14.Qb3 (14.Bb2 Nb6 15.Bd3 Qd7+/–) 14...Nb6 15.Bd3 Nd5 (15...Bd7 16.Nc3+=) 16.Qc2 (16.Bb2 Qd7+=) 16...f5 17.Bc4 Nb6 18.Bb3 Bd7 19.Nc3 g5 (19...Nd5 20.Ne5+=) 20.h3 h5 (20...Nd5 21.Ne5+=) 21.e4+/– g4 22.hg4 hg4 23.Ne5! f4 (23...Qe5 24.de5) 24.Ng6+– (24.Nd7?! Qd7 25.e5 Kg7+/–) 24...Ng5? (24...Bg5 25.Nf8 Kf8+–) 25.e5 (25.Nf8?! Kf8 26.Rd1 f3+–) 25...Qb4 26.Na2 (26.Nf8?! Kf8 27.d5 ed5 28.Bd5 Nd5 29.Nd5 Qb5 30.Nf4 Qc6+–) 26...Qb5 27.Ne7 Kf7 28.Qg6 (better is 28.Ng6 Nd5 29.Nc3 Nc3 30.Bc3 Ne4+–) 28...Ke7 29.Qg5 Ke8 30.Bc2 (30.Bc2 Bc6 31.Bg6 Kd7 32.Nc3+–) 1–0. Sergeeva,Tatyana (2245) – Paehtz,Elisabeth (2230), Elista ol, 1998.

3.e3 Nf7

4.a3 e6 5.f4 (5.Nf3 d5=) 5...d5 6.Nf3 Nc6 (6...c5 7.bc5 Bc5 8.c4=) 7.c4 Be7 8.cd5 ed5 (8...Qd5 9.Nc3 Qh5 10.Be2+=) 9.Bd3+= Nd6 (9...a5 10.b5 Nb8 11.Qc2+=) 10.Qc2 Kf8 (10...Nc4 11.Bc4 dc4 12.Qc4+–) 11.Nc3 (11.0-0 a6+–) 11...Nc4+= 12.0-0 (12.Bc1 Be6+=) 12...Nb2 13.Qb2 d4 14.Ng5?? (better 14.Ne2!? de3 15.Be4 ed2 16.Rad1=) 14...dc3 (better 14...fg5 15.fg5 Ke8–+) 15.Qb3=+ Qe8 (better 15...fg5!? 16.fg5 Bf6 17.Qc3 Kf7=+) 16.Nh7+= Rh7 17.Qg8?? (17.Bh7 Qf7 18.Qf7 Kf7 19.dc3–/+) 17...Kg8–+ 18.Bh7 (18.Bh7 Kh7 19.dc3–+). FeegLood (2320) – pashpash (2070), lichess.org, 2017.

4.c4 e5 5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 b6 (8...d5 9.d4 Be6 10.de5 fe5 11.cd5 Bd5 12.Bc3=) 9.Ne2 Bb7 10.Ng3 c5 11.d3 d5 12.cd5 (12.e4 d4=) 12...Qd5 13.Nd2 Be7 (13...Qd7 14.Qa4=+) 14.Nf3 (14.Qa4!? Qd8 15.Be2=) 14...0-0 15.Be2 Rd8 16.0-0 Ng5 (16...Qd7 17.Qa4=+) 17.h3 (17.Qc2 Ne6=) 17...Nf3 (17...Nf7!?=+) 18.Bf3= Qd7 19.Bb7 Qb7 20.Qg4 Rd3 21.Nf5 (better 21.Nh5 Bd8 22.Ng7+–) 21...g6?? (better 21...Bf8 22.f4 e4 23.Bf6 Qd7=) 22.Qc4 (better 22.Ne7 Kg7 23.Qe6+–) 22...Rd5 (22...Kf8 23.Ne7 Rd7+–) 23.Ne7 (better 23.Qd5! Qd5 24.Ne7 Kf7 25.Nd5 Nd7+–) 23...Qe7 24.Qd5 Kf8 25.Rd1 Ke8 (25...Kg7 26.Qd8 Qa7 27.Bc3+–) 26.Qa8 (better 26.Qg8 Qf8 27.Rd8 Kd8 28.Qf8 Kc7 29.Qf6+–) 26...Qc7 27.f4! ef4 Exploits the pin (27...Ke7 28.fe5 f5 29.e6 Ke6 30.Qd5 Ke7 31.Qg8+–) 28.ef4 (28.Bf6 fe3 29.Qe4 Kf8 30.Qe3 Kf7+–) 28...Qf4 (28...Ke7 29.Qe4 Kf7 30.Qd5 Kg7 31.Qd8 Qd8 32.Rd8+–) 29.Re1 Kd7 (29...Kf8 30.Bf6! Qf6+–) 30.Qb7 Qc7 (30...Kd8 31.Qb6 Kd7 32.Qb7 Qc7 33.Rd1 Ke8 34.Qc7 Nd7 35.Rd7 c4 36.Qd8) 31.Re7! (31.Re7 Ke7 32.Qc7 Nd7 33.Bf6 Kf6 34.Qd7+–) 1–0. aravind555 – MisterDuke, lichess.org, 2019.

4.c4 e6 5.b5 a6 6.a4 d5 (6...ab5 7.ab5 Ra1 8.Ba1+=) 7.Nf3 (7.cd5 ed5 8.Nc3 Bb4+–) 7...ab5 8.ab5 Ra1 9.Ba1 Be7 10.cd5 ed5 11.Be2 (11.Qb3 c5+=) 11...0-0 12.0-0 c5 13.Qc2 (13.bc6 Nc6 14.Qb3 Be6+–) 13...Nd7 (13...Be6 14.Nc3 Nd7 15.Bd3=) 14.Bd3 (14.Nc3 Nb6=) 14...g6 15.Bg6 hg6 16.Qg6 Kh8 17.Qh5 Kg7 18.Ng5 (18.Qg4!? Kh6 19.Qh3 Kg7 20.Qg4 Kh7 21.Qf5 Kg8 22.Qg6 Kh8 23.Qh5 Kg8 24.Qg6=) 18...Ng5=+ 19.Qg5 Kh7 (19...Kf7 20.Qd5 Kg6 21.f4=+) 20.Qd5 (20.Qh5 Kg7 21.Qg5 Kf7 22.Qd5 Kg6=+) 20...Nb6 (20...Kh6 21.d4=+) 21.Qh5 Kg7 22.Qg5 Kh7 23.Qh4 (23.Qh5 Kg8 24.Qg6 Kh8 25.Qh5 Kg8 26.Qg6 Kh8 27.Qh5 Kg8=) 23...Kg7 (23...Kg8 24.Nc3–/+) 24.Qg5=+ Kf7 25.Qh5 Kg7 (better 25...Ke6=+) 26.Nc3 (better 26.Qg5! Kh8 27.Qh6 Kg8 28.Qg6 Kh8 29.Qh6 Kg8 30.Qg6 Kh8 31.Qh6=) 26...Qd3 27.Rd1 Qg6 28.Qf3 Bg4 29.Qb7 Bd1 30.Qe7 Rf7 31.Qe4 (31.Qc5 Bf3 32.g3 Qc2 33.Qc4 Nc4 34.h4 Qc1 35.Nd1 Qd1 36.Kh2 Qh1) 31...Qe4 32.Ne4 c4 (32...Be2 33.Nc5 Bb5 34.f3–/+) 33.Bd4=+ Nd7 (33...Bc2 34.Nc3 Na4 35.b6=+) 34.Nd6 Rf8 35.b6 Bb3 36.b7 Rb8 (36...Ba4 37.e4 Bc6 38.f4=) 37.Ba7 Kf8?? (better 37...Rd8=) 38.Bb8+– Nb8 39.h4 Ke7 40.Ne4 (40.Nf5 Kd8 41.h5 c3 42.dc3 Bf7+–) 40...Bc2 (40...Ba4 41.h5 Bc6 42.Nc5+–) 41.f3 Kf7 (41...Ba4 42.h5 Be8 43.h6+–) 42.Nd6 (42.Nd6 Ke7 43.Nc4+–) 1–0. DEFFM – GuestSLPX, freechess.org, 2019.

4.d4 e5 5.a3 Bd6 (5...ed4 6.Bd4 Nc6 7.Nc3+=) 6.c4 (6.Nf3 Nc6+=) 6...c6 (better 6...ed4!? 7.c5 Be7 8.Bd4 Nc6=) 7.c5 (7.Nf3 0-0+–) 7...Bc7 8.Nf3 0-0 (8...e4 9.Nfd2 f5 10.Nc3+–) 9.Bd3 Re8 (9...d5 10.cd6 Bd6 11.Qc2+–) 10.Qc2 (10.de5 Ne5 11.Ne5 fe5+–) 10...a5 (10...g6!?+–) 11.Bh7+– Kf8 (11...Kh8 12.0-0 ab4 13.Nbd2+–) 12.Nh4 Ng5 (12...g5 13.Ng6 Kg7 14.de5 fe5+–) 13.de5 ab4 (13...Be5 14.Ng6 Kf7 15.Ne5 fe5 16.Bg6 Kg8 17.Be8 Qe8+–) 14.ef6 Be5 (14...d5 15.Qg6 Re3 16.fe3 Be6 17.fg7 Ke7+–) 15.Ng6 Kf7 16.Ne5 Re5 17.Qg6 Kf8 (17...Ke6 18.Bg8! Qg8 19.f7 Kd5 20.Qd6 Ke4 21.Qe5 Kd3 22.Qd4 Kc2 23.Qc4 Kb2 24.Ra2 Kb1 25.0-0) 18.Qg7 Ke8 19.Qg8 1–0. DEFFM – GuestFBCS, freechess.org, 2018.

4.Nf3 c6 5.c4 (5.d4 d5=) 5...Na6 (5...e5 6.a3=) 6.b5 (6.a3 Nc7+=) 6...Nc7= 7.a4 e6 8.Nc3 Be7 9.Be2 0-0 10.0-0 d5 11.cd5 cd5 12.h3 (12.a5 e5 13.d4 Be6+=) 12...e5 13.Nh2 (13.d4 Be6=) 13...f5 (13...d4 14.ed4 ed4 15.Ne4=) 14.f4 (14.d4!? e4 15.a5=) 14...d4=+ 15.Nb1 (15.ed4 ed4 16.Na2=+) 15...Bc5 (better 15...d3!? 16.Bh5 g6 17.fe5 gh5 18.Qh5 Ng5–+) 16.fe5= Ne5 (worse 16...de3 17.d4 Be7 18.Qb3+=) 17.Kh1 de3?? (better 17...Ne6=+) 18.Be5+– ed2 19.Bc7 (19.Qd2 Qd2 20.Nd2 Nd5+–) 19...Qc7 20.Qd2 (20.Bc4 Kh8 21.Nd2 a6+–) 20...Bd6 (20...Be6 21.Nf3+–) 21.Nf3 Be6 22.Nc3 (22.Ng5 Qe7+–) 22...Rad8 23.Qb2 (23.Ng5 Bb3 24.Qb2 Bc4+–) 23...Rc8 (23...Qc5 24.b6!+–) 24.Rfc1 (24.Rad1 Qc5+–) 24...Qe7 25.Nd4 (25.a5 Rfd8+–) 25...Bd7 (25...Be5 26.Ne6 Qe6+–) 26.Bf3 Qf6 27.Nce2 Be5 (27...b6 28.a5+–) 28.Bb7 Rc1 (28...Rcd8 29.Qb3 Kh8 30.Qb4+–) 29.Rc1 f4 (29...Rb8 30.Qb3 Kh8 31.Bc6 Bd4 32.Bd7+–) 30.Qd2 Qh4 (30...Rd8 31.Bd5 Kh8+–) 31.Nf3 Qf2 (31...Qe7 32.Qd5 Be6 33.Qe5 Qf6+–) 32.Ne5 Bh3 33.gh3 (33.Qd5 Be6 34.Qe6 Kh8 35.Nf7 Kg8 36.Nh6 Kh8 37.Qg8 Rg8 38.Nf7) 33...Re8 34.Qd5 Kh8 35.Nf7 Kg8 36.Nh6 Kf8 (36...Kh8 37.Qg8! Rg8 38.Nf7) 37.Qd6 (37.Qf7) 7...Re7 38.Qd8 (38.Rc8) 38...Re8 39.Qd6 Re7 40.Qf4 (40.Rc8) 40...Qf4+– 41.Nf4 (41.Rc8 Re8 42.Nf4 gh6+–) 41...gh6 42.Rc8 Kg7 43.Bc6 Rf7 (43...h5 44.Nd5 Rf7 45.a5 Rf1 46.Kg2+–) 44.Ng2 (44.Nh5 Kg6 45.Be8 Kh5 46.Bf7 Kg5+–) 44...Re7 (44...Rf1 45.Kh2 Ra1 46.Rc7 Kf6 47.Ra7+–) 45.a5 Rf7 46.Rd8 (46.b6 ab6 47.ab6 Rf1 48.Kh2 Rb1+–) 46...Rc7 47.Rd7 Rd7 48.Bd7 Kf6 49.b6 Ke7 50.ba7 (50.ba7 Kf7 51.a8Q Kg7 52.Qe4 Kf6 53.Qe6 Kg7 54.Qe7 Kg8 55.Be6 Kh8 56.Qf6) 1–0. Abdullaevich (1800) – rand2020 (1825), lichess.org, 2019.

4.f4 d6 5.Nf3 e5 6.Bc4 d5–/+ 7.Bb3 e4 8.Nh4 (8.Nd4 Bb4 9.Nc3 c6–/+) 8...Bb4 9.c4 (9.a3 Be7–/+) 9...0-0 (9...f5 10.g3 Be7 11.Qh5–/+) 10.cd5 (10.Qh5–/+) 10...Nd6 (10...g5 11.a3 Be7–+) 11.Nc3? (better 11.0-0=+) 11...g5–+ 12.fg5 fg5 13.Ne4 Qe8 (13...gh4!? 14.Qh5 Qe7 15.Qg5 Qg5 16.Ng5 Bf5–/+) 14.Nd6–/+ Qe3 (14...cd6 15.Nf3 g4 16.Nd4 Qe3 17.Qe2 Bd2 18.Kd1–/+) 15.Qe2=+ Qe2 16.Ke2 Bd6 17.Nf3 Na6 (17...Re8 18.Kf1 h6 19.Rc1=+) 18.Bd4 (18.Ng5 Bg4 19.Kd3 Nc5 20.Kc3 Rf5=+) 18...h6 (18...Bg4 19.Raf1–/+) 19.Be3 Bg4 20.h3 Bh5 21.g4 Bg6 22.h4 Nc5 (22...Be4 23.Raf1 Nb4 24.Bc4=+) 23.Bc5= Bc5 (23...Be4 24.Raf1 Bc5 25.hg5=) 24.d6 Kg7 25.d7 (25.hg5 Rae8 26.Kd1 Be4 27.gh6 Kh8=+) 25...Rad8 (25...gh4 26.Rh4 Be4 27.Rf1=) 26.Rac1 (26.hg5 Rd7 27.gh6 Kh8 28.Rac1 Re7 29.Kd1=) 26...Bd6 (better 26...Be4!? 27.Rh3 Bf3 28.Rf3 Rf3 29.Kf3 Bb6=) 27.Nd4 (27.hg5 Rd7 28.gh6 Kh8+–) 27...Rd7 28.Ne6 Kg8 (28...Kf7 29.h5 Bh7 30.Rhf1 Ke8 31.Rf8 Bf8 32.Nc7 Rc7 33.Rc7 Be4+–) 29.Nc5+– Rdf7 30.h5 Bh7 31.Nb7 (31.Bf7?! Rf7 32.Rhe1 b6=) 31...Bf4 32.Rhf1 Kh8 33.Bf7 Rf7 34.Nc5 Rf6 (34...Re7 35.Kd1+–) 35.Rc4 Rc6 (35...Bg8 36.Ra4+–) 36.d3 (36.d4!? Rb6 37.Rf2 Bg8+–) 36...Bg8+– 37.Rc2 a5 (37...Bd6 38.d4 Bc5 39.dc5+– (worse 39.Rc5 Rc5 40.dc5 Bc4 41.Kf2 Bf1 42.Kf1 Kg7–+)) 38.Rb1 (38.d4 Rd6 39.Rd1 Rd8+–) 38...Bd6 (38...Ba2!? 39.Ra2 Rc5+–) 39.Rbc1 (39.Rb5 Be6 40.Kf3 Bd5 41.Ke3 Ba2 42.Ra2 Bc5 43.d4 Bb4+–) 39...Bf4 40.Rb1 Bd6 41.Rb5 a4 (41...Be6 42.Kf3+–) 42.Ra5 (42.d4 Be6 43.Kf3 Bd5 44.Ke3 Bf4 45.Kf2 Kg7+–) 42...a3 (42...Be6 43.Kf3+–) 43.d4 Bh7? (43...Be6 44.Kf3+–) 44.Rc3 (44.Ra8 Bg8+–) 44...Bg8 (44...Rb6 45.Kf3+–) 45.Raa3 (45.Rca3 Rb6 46.R3a4 Bd5+–) 45...Bd5 (45...Rb6 46.Rc2+–) 46.Ra5 Rb6 (46...Be6 47.Kf3 Bd5 48.Kf2+–) 47.Nb3 (better 47.Na4 Rb4 48.Rd5 Ra4 49.Rc2+–) 47...Rb4?? (better 47...Be6 48.Kf3 Rb8+–) 48.Rd5 1–0. FeegLood (2720) – FMBressac (2710), lichess.org, 2016.

4.f4 e5 5.a3=.

4.f4 e6 5.b5 d5 6.Nf3 Be7 7.Be2 0-0 8.0-0 a6 9.a4 c5 10.c4 b6 11.h3 (11.d3 Bb7=) 11...Qd6 (11...dc4 12.Bc4 Nd6 13.Be2=+) 12.Nh4 (12.Nc3 dc4 13.Bc4 Qd7=) 12...ab5 13.ab5 Ra1 14.Ba1 d4 (14...Rd8 15.d3=+) 15.Qc2= Rd8 16.Bh5 Nh8 (16...d3 17.Qc3=) 17.f5 (17.ed4 cd4 18.Nf3 d3–+ (18...Qf4?! 19.Bg4–/+)) 17...e5 (17...d3 18.Qd1=) 18.Bf3 Bd7 (18...Rd7 19.Bd5 Nf7 20.Ng6=) 19.Bd5+= Kf8 20.Qe4 (better is 20.e4!?+=) 20...Bb5=+ 21.Rf3 (21.ed4!? cd4 22.Ng6 hg6 23.Qh4=+) 21...Bc6–/+ 22.Qg4 (22.Bc6!? Nc6 23.Rg3–/+) 22...Bd5–+ 23.Rg3 g5 24.fg6 hg6 25.cd5 Qd5 26.Ng6 Ng6 27.Qg6 Qf7 28.Qf5 Nd7 29.Rg6 Ke8 30.Rh6 Nf8 (31.Qf3 Qa2 32.Qh5 Kd7 33.Qf5 Ne6–+) 0–1. Micheel – Roever, corr SOK–89–34, 1989.

2.b5 a6

3.c4 ab5 4.cb5 e5 5.e3 d5 6.Bb2 Bd6 7.Nc3 Be6 8.Nf3 Ne7 9.Be2 c5 10.d3 0-0 11.a4 h6 12.0-0 Nd7 13.Ba3 Nb6 Black plans c4 14.Qc2 Qd7 15.Nd2 (15.Bc1!?=+) 15...f5–/+ 16.Nb3 (16.Bf3 Rfc8–/+) 16...Rfc8–+ Black intends c4 17.a5 c4 (17...d4!? 18.ab6 dc3–+) 18.dc4 dc4 19.Nc5 Bc5 (worse 19...Rc5 20.Bc5 (20.ab6?! Rcc8 21.Rfd1 Rd8+–) 20...Bc5 21.ab6 Ra1 22.Ra1+–) 20.Bc5 Rc5 21.ab6 Ra1 22.Ra1 Nc8 (22...Nd5!? 23.Ra8 Rc8 24.Rc8 Qc8 25.Nd5 Bd5=+) 23.Rd1= Qf7 24.Rd8 Kh7 25.Qd1 Qe7 (worse 25...Nb6 26.Qd6 Nd5 27.Qc5 Nc3 28.Bf1+–) 26.Bf3 e4 27.Bh5 Nb6 28.Re8 Qd7 29.Qd4 Na4 30.g3 (worse 30.Na4 Rd5 31.Qa1 Bf7 32.Re4 fe4–+) 30...f4 31.Qe4 (worse 31.Na4 Rh5 32.Qd7 Bd7 33.Re4 Bb5–/+) 31...Bf5 32.Qd4 fe3 33.Qe3 Bh3 34.Re7 Qd3 35.Qe4 Rf5 36.Rg7 Kg7 37.Qe7 Kh8 38.Qe8 ½–½. Silent Move (2115) – ZEV (2060), redhotpawn.com, 2015.

3.c4 c6 4.e4 d6 5.Nf3 Bg4 (5...ab5 6.cb5 d5 7.ed5 cd5 8.d4+=) 6.h3+= Be6 (6...Bf3 7.Qf3 e5 8.bc6 Nc6 9.Bb2+=) 7.Qa4 g6 (7...cb5 8.cb5 Bd7 9.d4+/–) 8.d4+/– Nd7 9.bc6 bc6 (better is 9...Nb6!? 10.c7 Na4 11.cd8R Rd8+/–) 10.Qc6+– Qb8 (10...Bh6 11.Bh6 Nh6 12.c5+–) 11.Nbd2 (11.c5 Qd8+–) 11...Bh6 (11...Qc8 12.Qc8 Rc8 13.Rb1+–) 12.c5 Qb4 (12...Bd2 13.Bd2 Qa7+–) 13.Qa8 Kf7 14.d5 Nf8 (14...Bh3 15.Rh3 Bd2 16.Nd2 Nc5 17.Rb1+–) 15.c6 (15.de6 Ne6 16.cd6 Qd6 17.Qa6 Qd7+–) 15...f5 (15...Qc3 16.de6 Ne6 17.Rb1+–) 16.de6 Ke6 (16...Ne6 17.ef5 Nc7 18.fg6 hg6 19.Qb7+–) 17.Rb1 Qa4 18.Bc4 Kf6 19.Bb2 e5 20.Be5! Ke7 (20...de5 21.Qd8) 21.Rb7 Nd7 22.Rd7 1–0. Taulien,Hans_Juergen – Tiedemann,Marcel, remoteschach.de, 2002.

3.c4 e5 4.Nf3 =+.

3.e4 e5=.

2.b5 b6

3.Bb2 a5 4.a4 d6 5.e3 e5 6.Nf3 c5 7.c4 Nd7 8.Be2 Bb7 9.0-0 g5 10.d4 cd4 11.ed4 e4 12.Nfd2 Bg7 13.d5 Nc5 14.Nc3 Qe7 15.Bg4 h5 16.Bf5 e3 17.Nde4 Nh6 18.Nc5 bc5 19.Bg6 Nf7 20.Re1 0-0-0 21.Re3 Qd7 22.Bh5 Ne5 23.b6 Nc4 24.Re2 Rh7 25.Bf3 Rdh8 26.h3 Ne5 27.Re5 Rh3 28.g3 fe5 29.Bg4 Rh1 30.Kg2 R8h2 31.Kf3 e4 32.Ne4 Rd1 33.Bd7 Kd7 34.Rd1 Bb2 35.Ng5 Bd4 36.Rd2 Bd5 37.Kg4 Rf2 38.Rf2 Bf2 39.Nh3 Bd4 40.Nf4 Bb7 41.Nd3 c4 42.Ne1 c3 43.Nc2 Bb6 44.Kf5 d5 45.g4 d4 46.g5 d3 47.Na3 d2 48.g6 d1Q 49.Nc4 Qf3 50.Kg5 Be3 51.Kh4 Qf4 0–1. avinoam – geomuntean (1625), kurnik, 2012.

3.Bb2 d5 4.e3 Bb7 5.Nf3 e5 6.Nh4 Nd7 7.Qh5 g6 8.Ng6 hg6 9.Qh8 Ne7 10.Qh3 Nc5 11.d4 ed4 12.Bd4 Bc8 13.Bf6 Bh3 0–1. chybol3 – polish95, kurnik, 2012.

3.c4 c6 4.a4 (4.d4 cb5 5.cb5 Bb7+=) 4...a6 5.Qb3 (5.e4 e5=) 5...a5 (5...e5 6.Nc3=) 6.Bb2 e6 7.e3 d6 (7...Bb7 8.Nf3=) 8.Bd3 (8.Nf3 cb5 9.Qb5 Bd7 10.Qh5 g6+=) 8...Bd7 (8...Bb7 9.Nf3=) 9.Ne2 (9.Nf3 f5+=) 9...g6 (9...f5 10.0-0+=) 10.0-0+– Bg7 11.f3 (11.Nbc3 Nh6+–) 11...e5 (11...Ne7+=) 12.g3 (12.f4 Ne7+=) 12...c5 (12...Ne7 13.f4=) 13.g4 (13.Be4 Ra7+=) 13...Qe7 (13...Ra7 14.Nbc3=) 14.h3 (14.Nbc3 Ra7+=) 14...g5 (better 14...f5!?=) 15.Ng3 h5 (15...Be6 16.Be4 Ra7 17.Nc3+–) 16.Nf5 (16.Bg6!? Kd8 17.Nh5+–) 16...Bf5+= 17.Bf5 hg4 18.fg4 (18.hg4 Qc7+=) 18...Qf7 (18...Rh3!? 19.Nc3 Nh6=) 19.e4 (19.Be4 Ra7 20.Rf3 Ne7+–) 19...Nh6 20.Na3 (20.Qd3!?+=) 20...Nf5 (20...Nd7 21.Bd7 Qd7 22.Qf3=) 21.ef5 1–0. afsharian – gacavara, lichess.org, 2018.

3.e4+= a6 4.d4 ab5 5.Bb5 c6 6.Bd3 g5?? (better is 6...d5+=) 7.Qh5 1–0. Taulien,Hans_Juergen – Fritz,Marco, remoteschach.de, 2001.

2.b5 c6

3.a4 Qa5 4.c4 (4.e4 e5+=) 4...cb5 5.cb5 a6 (5...d5 6.Ba3=) 6.e3 ab5 7.Bb5 Nh6 (7...e5 8.Ba3=) 8.Bb2 (8.Nf3 Nf7+=) 8...Nf7 9.Qb3 Nd6 10.Ne2 Ne4 (10...Nc6 11.Nbc3+=) 11.Bc3 (11.Qc2 Nd6+–) 11...Nc3+= 12.Nbc3 e6 (12...Nc6 13.0-0+=) 13.0-0 (13.Qe6 Kd8 14.Qb3 Na6+–) 13...Bd6? (13...Nc6 14.d4+=) 14.Qc4?? (better 14.Qe6! Be7 15.Nd5+–) 14...0-0 15.Rfb1 Be5 (15...Be7 16.Qh4=) 16.Nd4 (16.Qh4!?+=) 16...d5= 17.Qb4 Qc7 18.g3 (18.Bd3 Rf7 19.f4 Bd4 20.Qd4 Nc6=) 18...Bd6 (18...Na6 19.Ba6 ba6 20.f4=) 19.Qb3= Bc5 (19...Qf7 20.Be2=) 20.Nc2 (20.Nd5!? Qd6 21.Nf4 Bd4 22.ed4+=) 20...Rd8 21.d4 Bd6 22.Rb2 Bd7 (22...Nc6 23.Bd3=) 23.Rba2 (better 23.Bd7 Rd7 24.e4+–) 23...e5?? (better 23...Nc6=+) 24.Nd5+– (24.Qd5?! Kh8+–) 24...Qc8 (24...Qa5 25.Nb6 Kh8 26.Bd7 Nd7 27.Na8 Qa8+–) 25.Bd7 Nd7 26.a5 (26.Nb6 Kh8 27.Nc8 Rac8 28.Qb7 Rc7+–) 26...b5?? (better 26...Kh8+–) 27.ab6 (better 27.Ne7! Kh8 28.Nc8 Rac8 29.Qb5+–) 27...Ra2 28.Ra2 (better 28.Ne7! Kh8 29.Nc8 Ra1 30.Na1 Rc8+–) 28...Qb7 (28...Kh8+–) 29.Ra7 (29.Ra7 Qa7 30.ba7+–) 1–0. afsharian – Rhoads, lichess.org, 2019.

3.a4 e6 4.c4 Bb4 5.e4 (5.Qb3 Ba5+=) 5...c5 (5...d5 6.Nc3=) 6.Bb2 b6 (6...Ne7 7.Nf3=) 7.Nc3 Bb7 (7...Ne7+=) 8.d3 (better is 8.Qh5 g6 9.Qh4+/–) 8...d5= 9.ed5 (9.ed5 ed5 10.d4=). Baer,Cy (1895) – Nackas,Hans Juergen (1650), RSS4D basic–5, 2008.

2.b5 e5

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

3.Bb2 d5 4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 f6 3.b5 d5 4.e3 Be6 5.Nf3).

3.e3 a6 4.c4 ab5 5.cb5 c6 6.Bc4 cb5 7.Bg8 Rg8 8.Qh5 g6 9.Qh7 Rg7 10.Qh3 d6 11.Qf3 Nc6 12.Ne2 f5 13.e4 f4 14.Bb2 g5 15.Qh5 Kd7 16.Nbc3 Kc7 17.Nb5 Kb8 18.Nec3 Be6 19.Qe2 g4 20.Nd5 f3 21.gf3 gf3 22.Qf3 Bg4 23.Qb3 Rf7 24.a4 Bf3 25.Rf1 Be4 26.Ndc3 Bg2 27.0-0-0 Bf1 28.Rf1 Qe7 29.Nd5 Qd7 30.Nb6 Qe7 31.Na8 Ka8 32.Ba3 Qd8 33.Qc3 Rd7 34.Kc2 d5 35.Rb1 d4 36.Qb3 Ba3 37.Qa3 Qc8 38.Kd1 d3 39.Qc5 Rg7 40.f3 Qg8 41.Kc1 Rg1 42.Kb2 Rb1 43.Kb1 Qb3 44.Kc1 Qa4 0–1. jura1946 – wney, kurnik, 2012.

3.e3 d5 4.c4 d4 5.a4 c5 6.Qh5 g6 7.Qf3 Be6 8.ed4 cd4 9.d3 Nd7 10.Be2 Qc7 11.Nd2 0-0-0 12.a5 Kb8 13.a6 b6 14.Ne4 f5 15.Ng5 Bb4 16.Bd2 Bd2 17.Kd2 Bc4 18.dc4 Qc4 19.Qb7 1–0. jura1946 – fausto2dailha, kurnik, 2012.

2.b5 e6

3.a4 c6 4.c4 g6 5.e4 Bg7 (5...d5 6.ed5 ed5 7.cd5 cd5 8.Nf3=) 6.Bb2 (better 6.d4+=) 6...f5?? (better 6...d5=) 7.Bg7+– Kf7 (7...Nf6 8.Bh8 Ne4 9.Nc3+–) 8.Bh8 Nh6 (8...fe4 9.Nc3 d5 10.f3+–) 9.Bc3 Ng4 (9...fe4 10.d3 ed3 11.Qd3+–) 10.ef5 gf5 (10...ef5 11.Nf3+–) 11.h3 (better 11.Be2 Nf6+–) 11...Nf2 (11...Nf6 12.g4 Kf8 13.c5+–) 12.Qh5 Ke7 13.Qh7 Kd6 14.Kf2 Qb6 15.d4 a5 16.c5 Qc5 17.dc5 Kc5 (17...Kc7 18.Be5 Kd8 19.Bf6 Kc7 20.b6) 18.Nf3 (18.Qe7 Kd5 19.Be5 Ke5 20.Nf3 Ke4 21.Nc3 Kf4 22.g3) 18...cb5 (18...Kb6 19.Qe7 cb5 20.Qd6 Ka7 21.Bd4 b6 22.Qb6) 19.ab5 (19.Qe7 Kb6 20.Qd6 Ka7 21.Bd4 b6 22.Qb6) 19...a4 20.Ne5 (20.Qe7 d6 21.Bd4 Kb4 22.Qd6 Kb3 23.Ra3 Kc2 24.Bd3) 20...b6 (20...Ra6 21.Qe7 Kb6 22.Bd4 Kc7 23.Nf7 b6 24.Qd8 Kb7 25.ba6 Ka8 26.Qc8 Ka7 27.Qb7) 21.Qe7 d6 (21...Kd5 22.Bc4 Ke4 23.Nd2 Kf4 24.Qh4) 22.Qc7 Kd5 23.Qc4 1–0. afsharian – Mikavds, lichess.org, 2018.

3.c4 a6 4.a4 (4.e4 ab5 5.cb5 d5=) 4...ab5 5.cb5 c6 6.Bb2 cb5 7.ab5 Ra1 8.Ba1 e5 9.e4 Qa5 (9...d5 10.ed5 Qd5 11.Nc3=) 10.Nc3 Bb4 11.Nge2 (11.Bc4 d6+=) 11...d6= 12.g3 (12.Ng3 Be6=) 12...Nh6 (12...Bg4 13.Bg2=+) 13.Bg2 Bc3 (13...Bd7 14.0-0=) 14.Bc3 (14.Nc3!? Be6 15.0-0=) 14...Qb5=+ 15.0-0 (15.d4 Nf7=+) 15...0-0 (15...Bg4 16.Re1=+) 16.d4=+ Kh8 17.d5 (17.Bd2 Nf7=+) 17...Bg4 (17...f5 18.Bd2=+) 18.f3 Bd7 19.Bd2 Qd3 (19...Qc5!? 20.Rf2 Nf7=+) 20.Bh6= Qd1 (20...Bb5!? 21.Kf2 gh6 22.Qd3 Bd3+=) 21.Rd1+– gh6 22.f4 (22.Rb1!? b5 23.Nc3+–) 22...Bb5 (22...Na6 23.Ra1=) 23.Nc3 Bc4 (23...Ba6 24.Rb1+=) 24.f5 (24.Rb1!? Ba6 25.Rb6+–) 24...Na6 25.Bf1 Bf1 26.Kf1 Rb8 (26...Nc5!?=) 27.Nb5+= Nc5 (27...Rd8 28.Rc1+=) 28.Re1 (28.Nd6 Kg8+–) 28...Nd3 (better 28...Rd8!?=) 29.Re3+– (29.Nd6 Ne1 30.Ke1 b5–/+) 29...Nc5 30.Nd6 b5? (better 30...Kg8!?+–) 31.Rc3+– Na4 32.Rb3?? (better 32.Nf7 Kg8 33.Rc7+–) 32...b4+– 33.Nf7 (better 33.Ke2!?+–) 33...Kg7 34.Nd6 Nc3 (34...Nc5 35.Rb1=+) 35.Nc4 (35.Kg2 Ne2+=) 35...h5 (better 35...Ne4!? 36.d6 Nc5=+) 36.Nd2+= h6 37.Kf2 Rb7 38.Nb1?? (better 38.Ke3+–) 38...Ne4–+ 39.Kf3 Nd2?? (better 39...Nd6–+) 40.Ke3 (better 40.Nd2 Rb8 41.Ke4+–) 40...Nb3–+ 41.Kd3 Nc5 42.Kc2 (42.Kc4 Ne4–+) 42...Ne4 43.Kd3 Nd6 44.Kc2 Kf7 45.Kb3 (45.Kd2 Rb5 46.Ke1 Rd5–+) 45...Ke8 (better 45...Rb5!? 46.Kc2–+) 46.Nd2 Kd7 47.Nf3 (47.Ka4 e4 48.Kb3 e3–+) 47...Kc7 (47...Nf5!? 48.Nd2–+) 48.Nh4 Kb6 (better 48...Ne4 49.Nf3–+) 49.Ng6 (49.Kb4 Kc7 50.Kc3–+) 49...Kc5 50.Nh4 Kd4 51.Nf3 Kd5 52.Nd2 (52.Nh4 Nc4 53.Ng2 Nd2 54.Kb2 Ke4–+) 52...Kd4 Black plans e4 53.Nf3 Ke4 54.Nh4 (54.Ne1 Nf5 55.Nc2 Nd4 56.Kb2 Nc2 57.Kc2 Kf3–+) 54...Ke3 (better 54...Nc4! 55.Ng2–+) 55.Ng6 e4 (better 55...Nf5 56.h3 Nd4 57.Kb2 Kf3–+) 56.Ne7 (56.Nf4 Kd2 57.Nh5 e3–+) 56...Kf3 (56...Re7 57.Kb4 Kd4 58.Kb3 e3 59.Kb2 Rb7 60.Kc2 e2 61.Kd2 Rb2 62.Ke1 Ke3 63.g4 Rb1) 57.Nd5 e3 58.Ne3 Ke3 59.h3 Kf2 (59...Nc4 60.g4 Nd2 61.Kc2 b3 62.Kb2 Nc4 63.Kc3 b2 64.Kc4 b1Q 65.Kc5 Qb5 66.Kd6 Rd7 67.Ke6 Qc6) 60.g4 Kg3 61.gh5 Kh3 62.Kb2 (62.Kc2 b3 63.Kc3 b2 64.Kd3 b1Q 65.Kd4 Qb2 66.Kd5 Rc7 67.Kd6 Qe5) 62...Kh4 (62...b3 63.Ka1 Nc4 64.Kb1 Re7 65.Kc1 Re1) 63.Kb3–+ Kh5 64.Kb2 (64.Kc2 b3 65.Kd2 b2 66.Ke1 b1Q 67.Kd2 Qb2 68.Kd1 Ra7 69.Ke1 Ra1) 64...Nf5 (64...b3 65.Kc3 b2 66.Kd4 Nf5 67.Kd3 b1Q 68.Ke2 Rb2 69.Kf3 Qd3 70.Kf4 Rb4) 65.Kb3–+ Kg4 66.Kb2 (66.Kc2 b3 67.Kc1 b2 68.Kc2 b1Q 69.Kc3 Rb3 70.Kd2 Rb2 71.Kc3 Qc2) 66...h5 (66...b3 67.Kc1 b2 68.Kb1 h5 69.Kc2 b1Q 70.Kc3 Rb3 71.Kd2 Rb2 72.Kc3 Qc2) 67.Kb3 h4 68.Kb2 (68.Kc2 b3 69.Kd2 b2 70.Kd3 b1Q 71.Kc3 Qc1 72.Kd3 Rd7 73.Ke4 Qe3) 68...h3 (68...b3 69.Kc1 b2 70.Kb1 h3 71.Kc2 b1Q 72.Kc3 Qc1 73.Kd3 Rd7 74.Ke4 Qe3) 69.Kb3 (69.Ka2 b3 70.Ka1 b2 71.Kb1 h2 72.Kc2 b1Q 73.Kc3 h1Q 74.Kc4 Qc6) 69...h2 70.Kb2 (70.Kc2 h1Q 71.Kb2 b3 72.Kc3 Qc1 73.Kd3 Qc2) 70...h1Q 71.Kb3 (71.Kc2 Ne3 72.Kd3 Rd7 73.Ke2 Qf3 74.Ke1 Rd1) 71...Qh2 (71...Qd1 72.Kb2 b3 73.Kc3 Qd4) 72.Ka4 (72.Kc4 Qe2 73.Kb3 Nd4 74.Ka4 Qb5) 72...Rd7 (72...Qa2) 73.Ka5 (73.Kb3 Nd4 74.Kb4 Qb2 75.Kc4 Qb3 76.Kc5 Rd5) 73...Qb8 74.Ka4 Ra7 (74...Nd4 75.Ka5 Qb5) 75.Kb3 ½–½. afsharian – pellyalsek, lichess.org, 2019.

2.c3 c6

3.e4 d5 4.f3 (4.ed5 Qd5 5.d4 a5=) 4...e5=+ 5.d4 (5.ed5 cd5 6.d4 Nc6=) 5...Nd7 (5...de4 6.de5 Qd1 7.Kd1 fe5 8.fe4=+) 6.Be3 Ne7 7.Bd3 g6 (7...ed4 8.cd4 de4 9.fe4= (< 9.Be4 f5 10.Bc2 Nd5–/+)) 8.Ne2 f5 9.ef5 (9.0-0 Bg7=) 9...gf5 (9...Nf5 10.Bf5 gf5 11.de5 Ne5 12.0-0=) 10.de5 Ne5 11.Bd4 N7g6 12.f4 Qc7?? (better is 12...Nd3!? 13.Qd3 Rg8=) 13.0-0?? (13.fe5 Bg7+–) 13...Be7?? 14.fe5+– Be6 15.Bf5 Bf5 16.Rf5 Rf8 17.Rf8 Bf8 18.Ng3 b5 19.Nd2 Qf7 20.Qg4 a5 21.ba5 Ra5 22.Qc8 Ke7 23.Bc5 1–0. rodnel – scmorgan, net–chess.com, 2006.

3.Nf3 d5 4.e3 e5 5.Be2 e4 6.Nd4 f5 7.0-0 Be7 8.d3 ed3 (8...Nf6!?=) 9.Bd3+= Qd6 (9...g6 10.Bb2+/–) 10.Nf5+/– Qd8? (better is 10...Bf5 11.Bf5 Nf6+/–) 11.Ng7+– Kf8 12.Nh5 Nd7 13.Qf3 Ngf6 14.Bb2 Ne5 15.Qe2?? (better is 15.Qg3 Neg4 16.Nf4+–) 15...Nd3 16.Qd3 Nh5–/+ 17.c4 dc4?? 18.Qc4?? Rg8–/+ 19.Nc3? (19...Bh3 20.g3 Bf1 21.Rf1–+; better is 19.Be5–/+) 1–0. kostaspetidis (2105) – scmorgan, net–chess.com, 2006.

2.c3 e5

3.Bb2 (--> 1.b4 e5 2.Bb2 f6 3.c3).

3.e3 Nc6 4.a4 Nh6 5.h3 Bd6 6.Qh5 Ke7 7.Na3 Qe8 8.Qd1 Qg6 9.Nc4 Kf7 10.Qb3 Ke7 11.b5 Nd8 12.Ne2 b6 13.Ng3 Bc5 14.d4 ed4 15.cd4 Bd6 16.Bd3 f5 17.e4 Bg3 18.ef5 Nf5 19.Be3 Bh4 20.Ne5 Qd6 21.Bf5 Rf8 22.Bh7 c6 23.Ng6 Ke8 24.Nh4 cb5 25.Qb5 Bb7 26.Qh5 Nf7 27.Nf5 Qb4 28.Bd2 Qb2 29.Rd1 Kd8 30.Qh4 Kc8 31.Ne7 Kc7 32.Bf4 d6 33.0-0 Rae8 34.d5 Qf6 0–1. nakpim – boissimon, kurnik, 2012.

3.e3 d5 4.d4 Nd7 5.Nf3 +=.

3.e3 d5 4.Qh5 g6 5.Qd1 Nh6 6.h3 Nf5 7.b5 Be6 8.a4 Bd6 9.Na3 0-0 10.Nc2 Nd7 11.Be2 Nc5 12.d4 Ne4 13.Bb2 c6 14.Nf3 Qa5 15.Qd3 ed4 16.Nfd4 Nd4 17.Nd4 Bf7 18.0-0 c5 19.Nb3 c4 20.Na5 cd3 21.Bd3 Nc5 22.Be2 b6 23.Nb7 Nb7 24.Kh1 Nc5 25.f3 Bg3 0–1. nakpim – jackw171, kurnik, 2012.

3.e3 Ke7 4.Nf3 Nh6 (4...Kf7 5.d3=) 5.d3 (5.e4 d5 6.ed5 Qd5+=) 5...Ke8 6.Be2 Bb4?? (better is 6...a5 7.b5 d5+=) 7.cb4+– Nc6 8.Bd2 b6 (8...a6 9.0-0+–) 9.a3 a5 10.0-0 (10.ba5!? Na5 11.e4 Nf7+–) 10...ab4 11.Bb4?? (better is 11.Qb3+–) 11...Ra3?? (better is 11...Nb4 12.Nc3 Nc6=) 12.Ba3+– 1–0. Fournier,Frederic (1900) – lajamu (1700), Active blind, 2011.

3.e4 c6 4.d3 Ne7 5.a3 d5 6.ed5 Nd5 7.Nf3 (7...a5 8.Bb2=+). sbderkach (1680) – scmorgan, net–chess.com, 2006.

3.e4 d5 4.ed5 Qd5 5.d3=.

2.c3 g6

3.Bb2 (--> 1.b4 g6 2.Bb2 f6 3.c3).

3.e3 c6 4.Nf3 b6 (4...e5 5.Be2=) 5.Bb2 (5.e4 e5+=) 5...Bb7 (5...e5 6.Be2=) 6.a3 Bg7 (6...e5 7.d3+=) 7.d4 d6 8.Bd3 Nd7 9.Nbd2 e6 10.0-0 Ne7 11.Re1 Qc7 12.e4 0-0-0 (better is 12...a6+/–) 13.e5 (13.a4 Rhe8+–) 13...fe5? (13...de5 14.Qb3=) 14.de5 (14.Ng5!? Nf8 15.Nf7+/–) 14...de5 (14...Ne5 15.Ne5 de5 16.Ne4=) 15.Rc1 Kb8 16.Ne4 Ka8? 17.Ng3?? Nf6 18.c4+= Rd7? 19.Qc2 Rhd8 20.Be4 Ne4+= 21.Ne4 c5 22.bc5 Be4 23.Qe4 Qb7 24.Qb7+– Kb7 25.cb6 ab6 26.Ba1 h5 27.Re2 Nf5 28.Rb2?? e4 29.Ne1 Bb2 30.Bb2 g5 31.Nc2?? g4 32.Nd4?? Nd4 33.Bd4 Rd4 34.c5 Kb8 35.cb6 Kb7 36.Rb1 R8d6 37.g3 Rb6 38.Rb6 Kb6 39.h4 Kc6 40.Kg2 Kd6 41.Kf1 Kd5 42.Ke2 e5 0–1. Fournier,Frederic (2005) – manupetro (1775), Active Blind, 2008.

3.e3 d5 4.d4=.

3.e3 Kf7 4.Nf3 Nh6 (4...e5 5.d3=) 5.d4 Kg7 (5...d5 6.Be2+=) 6.Bb2 (6.e4 a5+/–) 6...Rg8 (6...d5 7.c4=) 7.Bd3 Qe8 (7...d5 8.e4+=) 8.Nbd2 Qf7 9.Qc2 Kh8 10.0-0 Bg7 11.a3 d5 12.Rfe1 Be6 13.e4 Nd7 14.ed5 Bd5 15.c4 Bf3 16.Nf3 Ne5?? 17.de5+– fe5 18.Be5 Be5 19.Re5 Raf8 20.Ree1 Nf5 21.Bf5 Qf5 22.Qf5 Rf5 23.Rad1 Rgf8 24.Kh1 g5 25.Nd4 Rf2 26.Ne6 Re2 27.Re2 Rf6 28.Rde1 h5 29.Nc7 h4 30.h3 g4 31.Ne6 gh3 32.gh3 Rg6 33.Kh2 Rg3 34.Re3 Re3 35.Re3 (35.Re3 a6 36.Nd8+–) 1–0. Fournier,Frederic (1860) – yuyo6, Active blind, 2011.

2.c4 d5

3.Na3 dc4 4.Qa4 c6 5.b5 +=.

3.Na3 e6 4.Qb3 c5 5.Nc2 Nc6 6.Ba3 (better is 6.bc5 Bc5 7.Nf3+=) 6...a5 (better is 6...cb4!? 7.Nb4 Nd4+=) 7.bc5+= dc4 (7...a4 8.Qc3+=) 8.Qc4+/– Ne5 (8...Nge7 9.Nf3+/–) 9.Qe4 Qd5 10.Qd5 ed5 11.d4 Nc4 12.Bc1 Bf5 (12...b6 13.Ne3 Ne3 14.Be3 bc5 15.dc5+/–) 13.Ne3 Ne3 14.Be3 (14.fe3 b6 15.e4 Be4+=) 14...Ne7 15.Bf4 Nc6 16.Rb1?? (better is 16.e3+–) 16...Bb1–+ 17.e3 Ba2 18.Bc7 a4 19.Bb5 a3 20.Ne2 Bc4 21.Bc6 bc6 22.Nc3 a2 23.Na2 Ra2 0–1. ifairclough – quikeagle, net–chess.com, 2002.

3.cd5 Qd5 4.Nc3 Qd6=.

3.e3 d4 4.d3 (4.ed4 Qd4 5.Nc3 e5=) 4...e5 5.c5 (5.a3 c5=) 5...Nd7 (5...a5 6.Qa4 Bd7–/+) 6.e4? (6.ed4 Nc5 7.dc5 Qd4=) 6...b6 (6...a5 7.b5–/+) 7.Ba3 (7.Nf3 bc5 8.b5 c6 9.bc6 Nb6+=) 7...bc5–/+ 8.bc5 Bc5 9.Qa4 Ba3 10.Na3 Ne7 11.Nc4 0-0–+ 12.h4 Bb7 13.g4 Bc6 14.Qc2 Bb5 15.Na5 c5?? 16.Qb3+= c4 17.Qb5 a6? 18.Qc4+– Rf7 19.Nc6 Nc6 20.Qc6 Qa5 21.Kd1 Qc3?? 22.Qc3 dc3 23.Ne2 Rc8 24.d4 c2 25.Kd2 ed4 26.Rc1 d3? 27.Nf4 Ne5 28.Rh3 Nc4 29.Kd3 Ne5 30.Kd2 Rd7 31.Nd5 Rc4 32.Bc4 Nc4 33.Kc2 Ne5 34.Rb3 Ng4 35.f3 Kf7 36.fg4 h5 37.g5 f5 38.Rf1 Ke6 39.Rf5 Rf7 40.Rb6 (40.Rb6 Kd7 41.Rf7 Ke8 42.Re7 Kd8 43.Rb8) 1–0. ifairclough – quikeagle, net–chess.com, 2001.

2.c4 d6

3.d4 e5=.

3.d4 Be6 4.d5 Bf7 5.e4 Nd7 6.f4 a6 (6...a5 7.b5=) 7.a4 (7.f5 c5+=) 7...Qb8 (7...e5 8.Nf3=) 8.a5 Qa7 (8...e5 9.Nf3+=) 9.Qd3 (9.Ra3 e5+=) 9...0-0-0 (9...e5 10.Be3 Qb8 11.f5+=) 10.Be3 Qa8 11.b5 Nc5 (11...e5 12.ba6 Qa6 13.Qd1+=) 12.Bc5+– dc5 13.b6 (13.Qh3 Kb8+–) 13...c6 (13...e5 14.fe5 fe5 15.Qg3+–) 14.Nc3 (14.Qh3 Kb8+–) 14...e6 15.Nf3 (15.Qh3!? Bd6 16.de6+–) 15...ed5 16.ed5 cd5 17.cd5 Ne7 18.Rd1 Ng6 19.Qf5 (19.f5 Re8 20.Ne4 Ne5 21.Ne5 Re5+=) 19...Rd7 (19...Kb8 20.Bc4=) 20.Bc4 (20.Ne4 Kd8 21.d6 Qc8+–) 20...Bd6+= 21.g3 Re8 22.Kf2 Qb8 (22...Ree7 23.Ne4 Kb8 24.Rhe1+–) 23.Rhe1 (23.Bb3 Ne7 24.Qh3 Red8+–) 23...Red8 (23...Re1 24.Re1 Kd8 25.Kg1+–) 24.Ne2 (24.Bb3!?+–) 24...Nf8 (24...h5 25.Bb3 Ne7 26.Qh3+–) 25.Qg4 (25.Bb3 Bg6 26.Qh3 c4+–) 25...g6 (25...h5 26.Qh3+–) 26.h4 (26.Nc3 h5 27.Qh4 Nh7+–) 26...h5 (26...f5 27.Qh3=) 27.Qh3+= f5 (27...Qa8 28.Nc3 Nh7 29.Kg2+–) 28.Ng5 (28.Nc3 Re8+–) 28...Bg8+= 29.Nc3 (29.Rc1+=) 29...Be7?? (29...Bf4 30.Nf3 Bd6 31.Kg2=+) 30.Re5 (better 30.Nf3+–) 30...Qd6?? (30...Bf6 31.Nf3=) 31.Qg2?? (31.Nge4 fe4 32.Ne4 Qe5 33.fe5 Be6+–) 31...Kb8?? (31...Bf6 32.Rde1 Be5 33.fe5 Qe7+=) 32.Bb5?? (better 32.Nge4 fe4 33.Ne4 Bd5 34.Bd5 (34.Red5?! Qc6 35.Nc3 Qc8+=; 34.Rdd5?! Qc6+–) 34...Qe5 35.fe5 Rd5 36.Nd6 R5d6 37.ed6+– (worse 37.Rd6 Bd6 38.Qd5 Bc7 39.bc7 Kc7 40.Qc5 Kd7+–)) 32...Bg5?? (32...ab5!? 33.Nb5 Qf6 34.Nc7–+) 33.Bd7 (better 33.hg5!? Rh7 34.Bc6=+) 33...Nd7–/+ 34.hg5 Ne5 35.fe5 Qe5 36.Qf3 Rd6 (36...Ka8 37.Qe3 Qd6 38.Re1=) 37.Re1 (37.Qe3 Qe3 38.Ke3 Rd7=) 37...Qd4–/+ 38.Kg2 (38.Qe3 Rd8–/+ (38...Bd5?? 39.Qd4 Kc8 40.Qc5 Bc6 41.Qd6 h4 42.Qc7)) 38...Bd5?? (better 38...Kc8–+) 39.Re8 (39.Re8 Rd8 40.Rd8) 1–0. afsharian – AlejandroPinglo, lichess.org, 2018.

3.f4 c6 (3...e5 4.e3+=) 4.e4 g6 (4...e5 5.f5=) 5.Nf3 (5.d4 e5+=) 5...Na6 (5...e5 6.d4=) 6.a3+= Qb6 (6...e5 7.d4+=) 7.Bb2 (7.d4 c5+/–) 7...Bh6+= 8.g3 e5 (8...Bg7 9.d4+=) 9.fe5+/– de5 10.Ne5 1–0. mluka (2225) – tpaoloca, net–chess.com, 2001.

2.c4 e5

3.a3 c6 4.Bb2 h5 5.d4 d6 (5...e4 6.d5+=) 6.e4 b5? (better is 6...h4!?+=) 7.cb5+– cb5 (7...ed4 8.Bd4 c5 9.Be3 cb4 10.Qd5+– (10.ab4?! d5+–)) 8.Bb5 Nd7 9.Nf3 Bb7 10.d5 (10.Nc3 a6 11.Bc4 Rc8+–) 10...a6 (10...f5 11.Bc6 Bc6 12.dc6+–) 11.Be2 (11.Ba4 Ne7+–) 11...g5 (11...f5 12.ef5 Ngf6 13.Nc3+–) 12.Nfd2 g4 13.h3 gh3 (better is 13...f5+–) 14.Bh5 Ke7 15.Qg4 hg2 (15...Qc8 16.Qe6 Kd8 17.Rh3 Ne7+–) 16.Qe6 1–0. wlittle (2295) – mancity (1615), net–chess.com, 2003.

3.Qb3 b6 4.Bb2 Bb7 5.c5 (5.Nf3 a5 6.ba5 Ra5=+) 5...c6 (5...bc5!? 6.bc5 Nc6=+) 6.d4= d6 7.Nd2 d5 (7...ed4 8.cb6 ab6 9.Bd4=) 8.e4 (8.de5 Na6 9.e4 bc5 10.ed5 Nb4+/–) 8...Nd7 9.Be2 (9.Ngf3 Qe7 10.de5 bc5 (10...Ne5? 11.Ne5 fe5 12.ed5+–) 11.ed5 cd5 12.bc5 Nc5 (12...Ne5? 13.Ne5 fe5 14.Bb5 Kf7 15.c6+–) 13.Qb5 Kf7+=) 9...Ne7 (9...ed4!? 10.Rc1 bc5 11.bc5 Nc5 12.Rc5 Bc5 13.Qb7 Ne7=+) 10.Ngf3+= ed4 11.ed5 (11.Nd4!? bc5 12.Ne6+/–) 11...Nd5 (11...bc5 12.Rc1 Rb8 13.d6+= (< 13.bc5 Ba6 14.Qa3 Be2 15.Ke2 d3 16.Kd1 Nd5=+)) 12.Nd4 (12.Bd4 a5 13.Bc4=) 12...Qc7 (12...bc5 13.Ne6 Qe7 14.Bh5 g6–+) 13.Ne6+/– Ne5?? (better is 13...Qb8 14.Rc1 bc5 15.bc5 Bc8+=) 14.Nc7+– (14...Nc7 15.Be5 fe5 16.Qe3+–) 1–0. wlittle (2155) – arsigen (1950), net–chess.com, 2005.

3.Qb3 Nc6 4.a3 =+.

3.b5 c5 4.Nc3 Ne7 5.e4 b6 (5...Ng6 6.Nd5+=) 6.a4 (6.Nf3 Bb7+=) 6...a5 (6...a6 7.Nf3+=) 7.ba6 (7.Be2 Kf7+=) 7...Ra6 8.Nb5 (8.Be2 Bb7=) 8...Nec6 9.Nf3 Nb4 (9...Be7 10.Nh4 g6 11.Nf3=) 10.g4 (10.Be2 Be7=) 10...Bb7 (10...d5 11.cd5 Bg4 12.Ra3=) 11.d3= Be7 12.h4 h5 (12...0-0 13.Rb1=) 13.Nh2 (better is 13.gh5 Rh5 14.Bh3+=) 13...g5?? (13...hg4 14.Ng4 f5 15.Ne5 fe4 16.Bg5 ed3 A) worse is 17.Bd3 Bg5 (17...Bh1?? 18.Nd6 Kf8 19.Ng6 Kg8 20.Ne7 Qe7 21.Be7+–; 17...Nd3?! 18.Qd3 0-0 19.Rh3+=) 18.Nd6 Kf8 19.Ng6 Kg8 20.Nb7 Qe8 21.Kf1 A1) 21...Nd3 22.Qd3 (worse is 22.Nh8 Qe4 23.Rg1 Bf6+=) 22...Rh6 23.h5=; A2) 21...Rh6=; B) 17.Ng6 Nc2 18.Kd2 Bh1 19.Be7 Qe7 20.Ne7 Ke7 21.Qg4+–) 14.Be2 (better is 14.hg5 fg5 15.gh5+–) 14...hg4 (14...gh4 15.Nf1 hg4 16.Bg4+=) 15.hg5 fg5 16.Bg4+/– Bc6 17.Bh5+– Kf8 18.Qf3 Bf6 19.Kd1 Nd3+/– 20.Nd6 Nf2 Attacking the isolated pawn on a4 21.Kc2?? Ba4 22.Kc3? Nh1 23.Bg5 Kg7 24.Bf6 Qf6 25.Rg1 (25.Rg1 Ng3 26.Rg3 Kh7 27.Qf6 Rg8 28.Qf7 Rg7 29.Qg7) 1–0. ifairclough – quikeagle, net–chess.com, 2002.

3.b5 Bc5 4.Nc3 (4.e3 d5=) 4...c6 (4...Ne7 5.Nf3=) 5.e3 a6 6.Nf3 ab5 7.cb5 Ne7 (7...d5 8.d4 Bb4 9.Qb3=) 8.Be2 (8.d4 ed4 9.Nd4 d5=) 8...d6 (8...d5 9.d4 Bb4 10.Qb3=) 9.0-0 Be6 10.d4 ed4 (10...Bb4 11.Qc2=) 11.Nd4+= Bd4 12.Qd4 0-0 13.Rd1 c5 (better is 13...Bb3! 14.Rd2 Nf5+/–) 14.Qd6+– Qd6 15.Rd6 Nd7?? (better is 15...Bd7+–) 16.Re6 Rfe8 17.Bc4 Kf8 18.Ne4 (18.e4 f5+–) 18...Ne5 (18...Red8 19.Bb2+–) 19.Bb3 (better is 19.Re5 fe5 20.Nc5 Rec8 21.Nd7 Ke8 22.Ne5 Ng6 23.Bf7 Ke7 24.Ng6 Kf7 25.Ne5 Ke8+–) 19...N7g6 20.Nc5 Rab8 21.Bb2 b6 22.Ne4 Re6 23.Be6 Rd8 24.Be5 Ne5 25.f4 Rd3 26.Kf2 Ke7 27.fe5 Ke6 28.ef6 gf6 29.a4 h6 30.a5 f5 31.a6 fe4 32.a7 Rd2 33.Kg3 Rd8 34.a8Q Ra8 35.Ra8 Kd5 36.Rc8 h5 37.Rc6 h4 38.Kh4 Ke5 39.Rb6 Kd5 40.g4 Kc5 41.Rb8 (41.Rb8 Kc4 42.b6+–) 1–0. gtate – bar, net–chess.com, 2001.

3.b5 d5 4.e3 d4 5.ed4 Qd4 6.Nc3 Bg4 (better 6...Bc5 7.Qh5 Kd8=+) 7.Be2?? (better 7.Nf3 Qd8 8.Be2=) 7...Bc5–+ 8.Nh3 Bh3 9.0-0 Bf5 (9...Be6 10.Qb3–+) 10.Bf3 (10.Bb2 Qd7 11.Re1–+) 10...Be6 (better 10...c6 11.Bh5 Kd8–+) 11.Bb7+= Ne7 12.Ba8 0-0 (better 12...Bc4 13.Re1 Qf2 14.Kh1 Nd7+=) 13.Nd5?? (better 13.Bb2 Nd7 14.Be4+–) 13...Qa1–+ (13...Bd5?! 14.cd5 Qa1 15.Qb3 Bf2 16.Kf2 Qd4 17.Qe3=) 14.Qf3 (14.Qb3 Qd4 15.d3 Bd5 16.Bd5 Nd5 17.cd5 Qb4 18.Qb4 Bb4–+) 14...Qa2 15.d3 Nd7 (15...Bd6!? 16.Ne7 Be7 17.Bd5 Bd5 18.Qd5 Kh8 19.Qb7–+) 16.Nc7 Bf7 17.Be4 f5! 18.Bf5? (18.Bd5 Nd5 19.Nd5 Nb6 20.Nb6 ab6–+) 18...Bg6 (better 18...Nf5 19.Qc6 Rd8 20.Bg5–+) 19.Be6 Kh8 20.Qg3 Bd3 21.Bd7?? (21.Qd3 Rf2 Combination) 21...Bf1 (21...Bf1 22.Be3 Qb1–+) 0–1. GuestYYLH – bernardoA, freechess.org, 2017.

3.b5 Ne7 4.a4 (4.e4 a6=) 4...Ng6 (4...d5 5.e3=+) 5.Bb2 Bc5 6.e3 0-0 (6...d6 7.d4 ed4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3=) 7.Qb3 (7.d4 ed4 8.Bd4 Bb4 9.Bc3 Qe7=) 7...Kh8 8.Nc3 b6 9.Ne4 (9.Be2 Bb7 10.Bf3 Qc8=) 9...Be7=+ 10.d4 Bb7 11.d5 c6?? (11...f5 12.Ng3=) 12.Ne2?? (better 12.bc6 Nc6 13.dc6 dc6 14.Rd1+–) 12...cd5 13.cd5 d6 14.N2c3 Nd7 15.Ba3 Nc5 16.Bc5 bc5 (16...dc5? 17.d6+–) 17.Bc4 a6 (17...f5 18.Nd2=) 18.0-0 ab5 19.ab5 (19.Nb5 Rb8=) 19...Qb6 (19...f5 20.Nd2=) 20.Ra8 Ra8 21.Na4 (21.Ng3 Bd8+=) 21...Qd8 22.Nec3 White prepares b6 22...Nf8 (22...f5 23.Rb1=) 23.b6 Nd7 24.Rb1 f5 25.f3 (25.Qc2 e4+=) 25...f4 (25...Bg5 26.Nd1=) 26.e4+= g5 (26...Kg8 27.Qc2=) 27.g3 (27.Qd1 Rb8+=) 27...h5 28.Ne2 Qg8 Black plans g4 29.Kg2 (29.Bb5 Nb8+=) 29...g4= 30.gf4 (better 30.Rf1=) 30...gf3–/+ 31.Kf3 ef4 32.Rg1 (32.Kf2 Qg4 33.h3 Bh4 34.Kf1 Qg6–+) 32...Qf7 (32...Ne5 33.Kf2 Ng4 34.Kf1–+) 33.Nf4 (better 33.Kf2–/+) 33...Ne5–+ 34.Ke3 Nc4?? (better 34...Rf8 35.Rf1 Bg5–+) 35.Qc4+= Ba6? (35...Bf6 36.Ne6+=) 36.Qb3 (better 36.Qc2 Bf8 37.Rg6+–) 36...c4?? (36...Rf8 37.Ng6 Kh7 38.Nf8 Bf8=+) 37.Qb2 (37.Qd1!? Kh7 38.Qh5 Qh5 39.Nh5 Bd8+–) 37...Kh7 38.Ne6 (38.Qb1 Rg8 39.Rg8 Qg8+–) 38...Bf6? (38...Rg8 39.Qb1+–) 39.b7?? (39.Qf2 Rg8 40.Qf5 Kh8+–) 39...Rb8? (better 39...Bb7 40.Qb4 Kh6 41.Qd6 Be7+– (41...Ra4 42.Qf4 Bg5 43.Qg5 Kh7 44.Nf8 Qf8 45.Qg6 Kh8 46.Qh5 Qh6 47.Qh6)) 40.Qg2 (better 40.Qf2 Rb7 41.Qf5 Kh8 42.Rg6 Bg5 43.Ng5 (43.Qg5?! Rb3 44.Nc3 Rc3 45.Kd2 Rd3 46.Ke1 Rd1 47.Kd1 Qf1 48.Kd2 Qf2 49.Kc1 Qf1 50.Kb2 Qe2 51.Ka1 Qd1 52.Ka2 Qb3 53.Ka1 Qd1 54.Ka2 Qb3 55.Ka1 Qd1=) 43...Qf5 44.ef5+–) 40...Bb7? (40...Rb7 41.e5 Rb3 42.Ke2 de5 43.Nf8 Kh8 44.Ng6 Kh7 45.Nf8 Kh8 46.Ng6 Kh7 47.Nf8=) 41.Nb6 (41.Qf3 Ra8 42.Ke2 Rg8+–) 41...Rg8? (better 41...Bd5 42.ed5 Rb6 43.Qc2 Kh8 44.Qc4 Rb8=) 42.Qg8+– Qg8 43.Rg8 Kg8 44.Nf4?? (better 44.Nc4 Ba6 45.Nd6+–) 44...c3= 45.Kd3 (45.Nh5 Bd4 46.Kd3 Ba6 47.Kc2 Bb6 48.Kc3 Bg1–+) 45...h4 46.Nc4?? (better 46.Kc2=) 46...Ba6–+ 47.Ne2 Kg7?? (better 47...c2 48.h3 Bb2–+) 48.Nc3= Kg6 (better 48...Be5 49.h3 Kf6=) 49.e5?? (better 49.h3+–) 49...Be5–+ (49...de5?! 50.Ne4+=) 50.Ne4 Bh2 51.Ned2 (51.Kd4 Bg1 52.Ne3 h3–+) 51...h3 52.Ke2 (52.Ne4 Bg1 53.Ng3–+) 52...Bg3 (52...Bf4 53.Kf3–+) 53.Kf1 (53.Kf3 Be1–+) 53...Bb7 (better 53...Bf4 54.Kf2–+) 54.Ne3 Kg5 (better 54...Be5–+) 55.Nf3?? (better 55.Ne4 Kf4 56.Ng3 Kg3 57.Nf5 Kf3 58.Kg1 Bd5 59.Kh2–/+) 55...Kf4 56.Ng1 Ba6 57.Nc4 h2 (57...Bc4 58.Ne2 Kg4 59.Kg1 h2 60.Kg2 Be2 61.Kh1 Bf3) 58.Kg2 Bc4 59.Nh3 Kg4 60.Nf2 Bf2 61.Kh2 Bd5 (61...Kf3 62.Kh3 Bf1 63.Kh2 Be3 64.Kh1 Kf2 65.Kh2 Bf4 66.Kh1 Bg2) ½–½. afsharian – Kumnick (1665), lichess.org, 2019.

2.e3 d5

3.Bb2 (--> 1.b4 d5 2.Bb2 f6 3.e3).

3.c4 c6 4.Bb2 e6 (4...e5 5.a3=) 5.a3 a5 6.b5 a4 (6...Bd6 7.d4+=) 7.cd5 cd5 8.Nc3 b6 (8...Bd6 9.Na4 Ne7 10.Nf3+=) 9.Na4 Bd7 (9...Bd6 10.Be2+–) 10.Nc3 (10.Bd4!? Bd6 11.Bb6 Qe7+–) 10...Ra5 11.a4 Qe7 (11...Bd6 12.Qh5 g6 13.Qh4+–) 12.Be2 g6 (12...Qf7 13.Nf3+–) 13.Nf3+– Nh6 (13...Qf7 14.d4+–) 14.0-0 Nf5 (14...Qf7 15.e4 Bc5 16.d4+–) 15.d3 (15.e4 Nd6 16.ed5 e5+–) 15...Bh6 (15...Qf7 16.e4 Ne7 17.Qd2+–) 16.e4 de4 (16...Nd6 17.ed5 0-0 18.de6 Be6 19.Nd4+–) 17.de4 (17.Ne4 0-0 18.Ba3 Qd8+–) 17...Nd6?? (17...Ng7+–) 18.Ba3 1–0. GuestPHCG – GuestJersey, freechess.org, 2017.

2.e3 e5

3.a3 c6 (3...a5 4.ba5 d5 5.d4=) 4.Be2 (4.d4 e4=) 4...Ne7 (4...d5 5.d4=) 5.Nf3 d5 6.Bb2 Ng6 7.0-0 Bd6 8.c4 0-0 9.cd5 cd5 10.Qb3 Be6 11.e4? (11.Nc3!?=) 11...Nf4–/+ 12.Nc3 (better 12.Re1–/+) 12...d4 (better 12...de4 13.Bc4 ef3 14.Be6 Kh8–/+) 13.Nd5?? (13.Bc4!? Qd7 14.Be6 Ne6 15.Nd5=) 13...Nd5 (better 13...Ne2 14.Kh1 Nf4–+) 14.ed5=+ Bf7 15.Bc4 (15.Rac1 Nd7=+) 15...Nd7–/+ 16.d3 a6 17.Nh4? (better 17.a4–/+) 17...b5–+ 18.Nf5 Nb6 (worse 18...bc4 19.dc4 Bc7 20.d6–+) 19.Nd6 Qd6 (19...bc4?! 20.Nc4 Qd5 21.Qd1 Nc4 22.dc4 Qc4 23.f4–+) 20.Rfc1 bc4 (20...Nc4?! 21.dc4 bc4 22.Qc4 Qd5 23.Qe2–+) 21.dc4 Qd7 (21...Rfc8!? 22.f4–+) 22.a4 Nd5 (22...Nd5 23.cd5 Bd5–+; better 22...Rac8!? 23.Qd3–+) 0–1. Trkn – Hammock, itsyourturn.com, 2000.

3.Bb2 (--> 1.b4 e5 2.Bb2 f6 3.e3).

3.b5 a6 4.c4 (4.d4 ab5 5.Bb5 Qe7=) 4...ab5=+ 5.cb5 c6 (5...d5 6.d4 Bd6 7.Nc3=+) 6.Bb2 (6.d4 ed4 7.ed4 Qe7 8.Be3 Qe6 9.Qh5 g6=) 6...cb5 (6...d5 7.d4 e4 8.Nc3=) 7.Bb5 (7.d4 Qa5 8.Nd2 Nc6=) 7...Ne7 (7...Nc6 8.Nf3=) 8.Nf3 (8.Qh5 g6 9.Qf3 Bg7=) 8...b6 (8...Nbc6 9.0-0=) 9.a4 (9.d4 e4 10.Nfd2 f5+=) 9...Ba6 (9...Nbc6 10.d4 e4 11.Nfd2+=) 10.Nc3 Bb5 11.Nb5 Nf5?? (11...d5 12.d4 e4 13.Nd2+=) 12.Rc1 (12.Qc2 Ne3 13.Nc7 Kf7 14.Qb3 d5 15.fe3 Ra7 16.Nd5 Ke8+–) 12...Nd6?? (better 12...Na6+–) 13.Nc7+– Kf7 (13...Ke7 14.Na8 Nc6+–) 14.Qb3 Kg6 15.Na8 Nc6 16.Nb6 Na5 (16...e4 17.Nh4 Kh6 18.Nc4+–) 17.Qc2 e4 18.Nd5 (18.Nh4 Kh6 19.Qc7 Be7 20.Qd8 Rd8+–) 18...Kf7 (18...Nac4 19.Nd4+–) 19.Nd4 f5 (19...Nac4 20.Nc3 Qa8 21.0-0+–) 20.0-0 g6 (20...Qa8 21.Qc5 Nab7 22.Qc7+–) 21.f3 (21.Nf5 Nf5 22.Bh8 Ba3+–) 21...ef3 (21...Bg7 22.fe4 Nc6 23.ef5 Bd4 24.fg6 Kg8 25.Bd4 Nd4 26.ed4+–) 22.Rf3 Ne4 (22...Kg8 23.Nf5! Nf5+–) 23.Nf5 Nf6 24.Bf6 Be7 25.Nh6 Ke6 (25...Kf8 26.Be7 Ke8 27.Qe4 Qb6 28.Rc8 Qd8 29.Bd8) 26.Qe4 Kd6 27.Qe5 (27.Nf7) 1–0. DEFFM – GuestGQMC, freechess.org, 2016.

3.b5 c6 4.a4 cb5 5.ab5 a6 6.Bb2 Bd6 (6...d5 7.d4 Bb4 8.Bc3=) 7.Qh5 (7.Bc4 Bc7+=) 7...g6 8.Qd1 (8.Qf3 Qc7 9.Nc3 Be7+=) 8...Ne7 (8...Bc7 9.d4+=) 9.Bc4 (9.d4 Bb4 10.c3 Ba5+=) 9...Qb6 (9...Bb4 10.ba6 ba6 11.Qf3=) 10.Nc3 Ra7 (10...Bb4 11.Qf3+=) 11.Na4 (11.Ra4 Bc7 12.Nf3 Nbc6+–) 11...Qc5?? (better 11...Qd8+–) 12.Nc5 (12.Nc5 Bc5 13.Qf3+–) 1–0. GuestFMLP – GuestSCDP, freechess.org, 2016.

3.b5 d6 4.Bc4 (4.Nc3!?+=) 4...Ne7 5.Qh5 (5.Nc3 a6=) 5...g6 6.Qf3 Nd7 (6...Bg7 7.Nh3=+) 7.Nc3+= f5 (7...Bg7 8.Nge2=) 8.e4 (8.Nge2 Nb6 9.Bb3 a6 10.ba6 Ra6+=) 8...f4 (8...Bg7 9.Nh3 Nb6 10.Bb3=+) 9.Nh3 (9.Nge2+–) 9...Nf6? (better 9...Bh6+=) 10.Ng5+– d5 11.ed5 (11.Nd5 Ned5 12.ed5 Bg4+–) 11...Bg4 (11...Nf5 12.0-0+–) 12.Nce4 Bf3?? (better 12...Ne4 13.Qe4 Bg7+–) 13.Nf6 1–0. DEFFM – GuestDNSV, freechess.org, 2019.

3.c4 Bb4–/+ 4.a3 Bd6 (4...Ba5 5.Bb2–/+) 5.d4=+ ed4 6.Qd4 (better 6.ed4!? Qe7 7.Be2=) 6...Be5–/+ 7.Qg4?? (7.Qe4 d6 8.Bb2–/+) 7...Ba1 (better 7...f5 8.Qf5 Ba1–+) 8.Qg7=+ f5 9.Qa1 Nf6 10.Be2 (10.Qe5 Kf7=+) 10...Rf8 (10...d6 11.Bh5 Ke7 12.Bb2–/+) 11.Bb2 (11.Qe5 Qe7 12.Qc7=+) 11...Ne4 (better 11...d6–/+) 12.Bh5+= Ke7 13.Bg7 Rg8?? (better 13...d6=) 14.Qe5 1–0. GuestQHHD – GuestWDMW, freechess.org, 2017.

3.Be2 Bb4 4.a3 Ba5 5.Bd3–/+.

3.Be2 Nh6 4.Bh5 (4.a3 d5=) 4...Nf7 (4...g6 5.Bf3–/+) 5.Bf7 Kf7 6.Qh5 g6 7.Qg4 (7.Qh4 d5=+) 7...d6 (7...d5 8.Qh4–/+) 8.Qc4 d5 9.Qe2 (9.Qc3 d4 10.Qd3 Kg7=+) 9...Nc6 (9...Bb4!? 10.Nf3 e4–/+) 10.b5=+ Nb4 (better 10...Ne7=+) 11.a3?? (better 11.d3 d4 12.a3=) 11...Nc2–+ 12.Kf1 Na1 13.Qd1 Bf5 14.Nc3 (14.d3 Qd7 15.a4 d4–+) 14...Bd3 15.Nge2 Qd7 16.Bb2 Nc2 17.g3 (17.a4 a6 18.Kg1 ab5–+) 17...Qh3 (better 17...d4 18.ed4 ed4 19.Kg2–+) 18.Kg1 Na3 (better 18...Qh5 19.a4 d4 20.ed4 ed4 21.Nd4 Nd4 22.Qh5 gh5 23.Kg2–+) 19.Ba3 Ba3 20.Nd5 (20.Qb3 Qd7 21.Qa3 d4–+) 20...Bd6 (better 20...Be4!? 21.Nef4 ef4 22.Nf4–+) 21.Qb3 Be2 (better 21...Bf5–+) 22.Nf4 Kg7 23.Nh3 Bf3 24.e4 Be4 (24...Bh1!? 25.Kh1 Rhd8 26.f4–+) 25.f3 Bc5 (25...Bf5 26.Kg2–+) 26.Kg2–/+ Bf5 27.Rc1 b6 (27...Bb6 28.g4 Bc8 29.g5–+) 28.Qd5 (better 28.g4!? Bd7 29.Nf2–/+) 28...Rhd8–+ 29.Qc6?? (29.Qa2 a5–+) 29...Bd7 (better 29...Rd2 30.Kf1 Bh3 31.Ke1 Bb4–+) 30.Qc7–/+ Rac8 (better 30...Kh6!? 31.Rc4 g5–+) 31.Qa7= Kh6 32.g4 (32.Rc5 bc5 33.Nf2 c4=) 32...Bb5=+ 33.Qa2 (33.Rc5 bc5 34.Qe7+=) 33…Bc6 (33...Bc6 34.Qe6 A) worse 34...Rd2 35.Kg3 Rd3 36.Rc5 (36.Qc8 Rf3 37.Kg2 Rf2 38.Kg3 Rg2 39.Kh4 Rh2=) 36...Rf3 37.Kg2 Rc3 38.Kf2+=; B) 34...Rf8=+) 0–1. Akrapovik (1665) – Pkh123456789 (1605), lichess.org, 2020.

3.b5 d5

4.c4 d4 5.Bd3 de3 6.de3 Bb4 7.Ke2 =+.

4.c4 Be6 5.cd5= Bd5 (5...Qd5 6.d4=) 6.Nc3 Be6 7.Nf3 Ne7 (7...c5 8.Be2=) 8.d4 Nd7 (8...Ng6 9.Bd3+=) 9.Be2 (9.Bd3 Nd5 10.Nd5 Bd5+=) 9...Ng6 (9...Nd5 10.Bd2=) 10.0-0 (10.de5 fe5 11.0-0 Nc5+=) 10...Bb4 11.Bb2 Bc3 (11...0-0 12.Qc2+=) 12.Bc3+= e4 13.Nd2 f5 14.d5 (14.Qc2 Qg5+=) 14...Bd5= 15.Bg7 Rg8 16.Bd4 Qg5 17.g3 f4 (better is 17...Nb6+=) 18.Bc4 (18.Qc2 Qe7+=) 18...0-0-0 (better is 18...Bc4!? 19.Nc4 Qb5=+) 19.Bd5= Qd5 20.Qb3 (20.Qa4 Nde5+=) 20...Qg5 (20...Qf5!?=) 21.Ne4+/– Qf5 (21...Qe7 22.Qc2+/–) 22.Nd2 Qh3 23.Nf3 Nh4 24.Nh4 fg3 25.fg3+– Rg3?? 26.hg3 Qg3 27.Ng2 h5 28.e4 h4 29.Qg3 hg3 1–0. uno (1895) – PeaceMoves (1880), ICC, 2003.

4.d4 Ne7=.

2.e3 g5??

3.Bb2?? (--> 1.b4 g5 2.Bb2 f6 3.e3).

3.Qh5 1–0. GuestCPYG – GuestSTVG, freechess.org, 2016.

2.e3 g6

3.Bb2 (--> 1.b4 g6 2.Bb2 f6 3.e3).

3.c4 Nc6 4.b5+= Nb4?? (better 4...Nb8+=) 5.a3+– Nd3 (5...e5 6.Nc3+–) 6.Bd3 b6 (6...e5 7.Be2+–) 7.Qc2 Bb7 (7...f5+–) 8.Bg6! hg6 (8...hg6 9.Qg6) 9.Qg6 1–0. GuestFWPX – HARMONIUS, freechess.org, 2017.

2.e3 Nh6

3.Bb2 g6 4.c4 Nf7 5.d4 Bg7 6.Nf3 e6 7.Bd3 d6 8.Qc2 0-0 9.Nbd2 a5 10.b5 a4 11.a3 f5 12.h4 e5 13.c5 e4 14.Bc4 d5 15.Bd5 Qd5 16.Ng5 Ra5 17.Nf7 Rf7 18.Bc3 Rb5 19.Qa4 c6 20.h5 Na6 21.hg6 hg6 22.Nc4 Nc5 23.Qa8 Rf8 24.Ne5 Be5 25.de5 Nd3 26.Ke2 Rb3 27.Qa5 b5 28.e6 Be6 29.Rh8 Kf7 30.Rf8 Kf8 31.Qa8 Ke7 32.Qh8 Rc3 33.Qc3 Qc4 34.Qg7 Bf7 0–1. ferminkatcho (1740) – vladislav22 (1800), kurnik, 2012.

3.c4 e5 4.a3 d6 5.Nf3 Be6 6.d4 e4 7.Nfd2 f5 8.Nc3 c6 9.Bb2 Rg8 10.Qb3 b5 11.Qc2 bc4 12.Bc4 d5 13.Be2 g6 14.h4 Nf7 15.Na4 h6 16.Nc5 Bc5 17.dc5 Nd7 18.Nb3 Nde5 19.Nd4 Bd7 20.Rc1 a6 21.a4 Rb8 22.b5 ab5 23.ab5 Qa5 24.Bc3 Qa3 25.bc6 Bc6 26.Nc6 Nc6 27.0-0 Qb3 28.Qd2 Ke7 29.Rb1 Qb1 30.Rb1 Rb1 31.Kh2 Ke6 32.f3 Rgb8 33.fe4 fe4 34.Bg4 Ke7 35.Qd5 Ncd8 36.Qe4 1–0. ferminkatcho (1705) – vladislav22 (1795), kurnik, 2012.

2.e4 b6

3.Bb5 c6 4.Bc4 (4.Be2 e5 5.a3 a5=) 4...b5 (4...e6!?=) 5.Bg8+= Rg8 6.Nf3 (6.Qh5!? g6 7.Qh7+=) 6...e5= 7.h3 (7.a3 a5=) 7...d6 (7...Bb4!? 8.c3 Ba5–/+) 8.d4= a6 (8...d5 9.ed5 Qd5 10.a3 ed4 11.Qd4 Qd4 12.Nd4+=) 9.0-0 g5 10.g4 (10.a4 g4 11.hg4 Bg4 12.ab5 cb5=) 10...h6 (10...h5 11.Nh2–/+) 11.a4 h5 12.Nh2 hg4 13.hg4 Rh8 14.ab5 cb5 15.Qf3 (15.d5 Ra7 16.Kg2 Rah7+=) 15...Nc6 16.c3 Qe7 (16...Ra7 17.d5 Rah7 18.dc6 Rh2–+) 17.Kg2? (17.d5 Qh7 18.Qg2 Ne7+=) 17...Rh4 (17...ed4 18.Rh1–+) 18.Qg3? (better is 18.d5!? Nd8 19.Rh1=) 18...Qh7 19.Nd2–/+ f5 20.Ndf3?? f4–+ 21.Nh4 fg3 22.Bg5 gh2 23.Kh2 Qe4 24.Rae1 Qg4 25.Rg1 Qh3# 0–1. Eries – jerb, ChessWorld.net, 2010.

3.Nc3 Bb7 4.Nf3 g6 (4...e6 5.a3+=) 5.d4 (5.a3 Bg7+–) 5...Bg7 (5...e5 6.a3+= (worse 6.de5 Bb4 7.Bd2 fe5=)) 6.Bc4+– g5?? (better 6...Nc6 7.a3 e6+–) 7.Ng5!+– (7.Ng5 Nh6 8.Qh5 Kf8 9.Nh7 Rh7 10.Qg6+–) 1–0. michaelbuss (2800) – knowlesey (1785), ChessWorld.net, 2012.

3.Bc4 e6 4.c3 Bb7 5.Qh5 g6=.

2.e4 d6

3.Bc4 a6 4.Ne2 b5 (4...f5 5.Bb2 Nc6 6.Nf4+–) 5.Bb3 e6 (5...Bg4!?+–) 6.Nf4 (6.a4 ba4 7.Ra4 Bd7+–) 6...Qe7 7.Qh5 Kd8 8.0-0 (8.a4 Nc6+–) 8...Nh6 (8...g5 9.Ne2 a5 10.ba5+–) 9.a4 Bd7? (better 9...Nc6 10.Bb2 Nb4 11.ab5 g5+–) 10.ab5 g5 11.Nd3 (11.Ne2 Bb5 12.Nbc3 Be8+–) 11...Be8? (11...Bb5 12.Bb2 Nc6+–) 12.Qf3 Bb5 (12...g4 13.Qe3 Bb5 14.Nf4+–) 13.e5 (13.Bb2 g4 14.Qf6 Rg8 15.Qe6 Qe6 16.Be6 Bd3 17.cd3 Rg6+–) 13...d5 (13...Bc6 14.ef6 Qe8 15.Qe2+–) 14.ef6 Qd6 15.Nc5 Qc6 16.f7 (better 16.d3 Nd7 17.f7+–) 16...Bc5 (16...Nd7 17.Nd7 Kd7+–) 17.Qf6 Kc8 (17...Kd7 18.bc5 Nf7 19.Qf7 Kc8 20.Re1+–) 18.Qh8 Kb7 19.bc5 Qc5 (19...Nf7 20.Qb2 Qc5+–) 20.f8Q Qc2 1–0. DEFFM – GuestFNKF, freechess.org, 2018.

3.Bc4 f5 4.Nc3 Nf6 5.d3+=.

3.d4 e5 4.d5 Qe7 5.b5 (5.Nf3 f5 6.ef5 Nf6+=) 5...Bd7 6.Bb2 (6.Nf3 f5 7.ef5 Bf5+=) 6...g6 7.a4 c6 (7...f5 8.ef5 gf5 9.Nf3=) 8.c4 (8.Nc3 Qd8+=) 8...c5 9.Be2 a6 10.Nc3 f5 11.Nf3 f4 (11...Bg7 12.0-0+=) 12.a5 (12...Nf6 13.0-0+/–) 1–0. nay (2190) – scmorgan, net–chess.com, 2006.

3.d4 Be6 4.Qh5+/– Bf7 5.Qb5 Nd7 6.Qb7 Rb8 7.Qa7 Rb4 8.Nf3 c5 (8...e5 9.Qa5 Rb6 10.d5+/–) 9.c3 (9.Nc3!? Bc4+–) 9...Rb8+/– 10.a4 cd4 (10...Ra8 11.Qb7+/–) 11.Bb5+– (11.cd4 Qc8 12.Be3 Ra8–+) 11...Be6? (better is 11...Rc8 12.Nd4 Rc7+–) 12.Nd4 (12.Qd4?! Bg4+–; 12.cd4?! Ra8 13.Qb7 Rb8 14.Bd7 Bd7+/–) 12...Ra8 13.Qb7 (13.Ne6?! Ra7 14.Nd8 Kd8+–) 13...Kf7 (13...Rb8 14.Qa6 Bf7+–) 14.Ne6 Ke6 (14...Qa5 15.Qd5 Ke8+–) 15.Qd5 1–0. pozarski (2075) – bobadom2, GameColony.com, 2002.

2.e4 e5

3.a3 a5 4.b5 Bc5 5.Bc4 Ne7 6.Nc3 c6 7.Qh5 g6 8.Qf3 Rf8 9.d3 Ng8 10.Nge2 d6 11.Na4 Nd7 12.Nc5 Nc5 13.Be3 Ne6 14.0-0 c5 (14...f5 15.bc6 bc6 16.ef5+=) 15.Ng3 Nd4 16.Qd1 Qe7 17.c3 Ne6 18.b6 Nd8 (18...f5 19.ef5 gf5 20.Qh5 Qf7 21.Qf7 Rf7 22.f4+/–) 19.d4+– Nc6 (19...Ne6+–) 20.dc5 dc5 21.Qd5 Nd4?! (21...Qg7+–) 22.cd4 (22.Bd4?! cd4 23.Rfd1 Qd8 24.Qd8 Kd8 25.cd4 Ke7+–) 22...cd4 23.Bd2 Bg4 (23...Qd8+–) 24.Bb5 Bd7 25.Qb7 Bb5 (25...Rd8 26.Bd3 Be6 27.Qc6 Kf7+–) 26.Qa8 Kf7 (26...Qd8 27.b7 Kd7 28.Qd8 Rd8 29.Rfb1+–) 27.Qd5 Kg7 28.Qb5 Rb8 29.Rfc1 Kh8 30.Qa5 Qe6 31.Rab1 Ne7 32.Qa7 Nc6 33.Rc6! (33…Qg8 34.Bh6 Re8 35.b7 Ra8 36.ba8Q Qa8 37.Qa8) 1–0. b4_player (2050) – zouzou (2155), GameColony.com, 2002.

3.a3 a5 4.b5 c6 5.Nc3 d5 6.bc6 bc6 7.ed5 cd5 8.d4 ed4 9.Bb5 Bd7 10.Qh5 g6 11.Qe2 Kf7 12.Nd5 Bb5 13.Qb5 Qd7 14.Qc4 Qe6 15.Ne2 Ne7 16.Nb6 Qc4 17.Nc4 ½–½. Woschkat,Karl_Heinz – Rosner,Dirk, Tiger SC, 2000.

3.a3 Bd6 4.Bc4 c5 5.Bg8 Rg8 6.Qh5 g6 7.Qh7 Kf8 8.d4 cb4 9.Bh6 Ke8 10.Qg8 Ke7 11.Qg7 Ke8 12.Qg6 Ke7 13.Qg7 Ke8 14.de5 fe5 15.Qg8 1–0. Rosner – Krahl, Tiger SC 2000.

3.a3 Bd6 4.Bc4 Ne7 5.Qh5 Ng6 (5...g6!? 6.Qf3 Nec6+=) 6.Nf3+/– Nc6 (6...Qe7 7.Nh4 Kd8 8.Nf5+/–) 7.Nh4+– b6?? (better is 7...Ke7+–) 8.Ng6 b5 9.Bf7! Kf7 10.Ne5 Kg8 (10...Ke6 11.Qf7 Ke5 12.Qd5 Kf4 13.Qf5) 11.Qf7 1–0. Woschkat,Karl_Heinz – Pieleck,Kerstin, remoteschach.de, 2003.

3.a3 Ne7 4.Bc4 d5 5.ed5 Nd5 6.Qf3 (6.Nf3 Nb6 7.Bb3 c5=) 6...c6 7.Ne2 (7.Nc3 Be6 8.Rb1 a5=) 7...Be6 8.Nbc3 (8.0-0!?=) 8...Nb4–/+ 9.ab4 Bc4 10.d3 Be6 11.Rb1 (11.b5 Bb4–/+) 11...Na6 12.Ba3 (12.b5 Nb4 13.bc6 bc6–/+) 12...Nc7 13.Na2?? (better 13.d4 ed4 14.Rd1–+) 13...Ba2 14.Rb2 (14.Ra1 Bd5 15.Qh5 g6–+) 14...Bd5 15.Qh3 Nb5 (15...Be6 16.Qg3 Nb5 17.d4–+) 16.c4 Bg2 17.Rg1 (17.Qe6 Be7 18.Rg1–+) 17...Bh3 (17...Bh3 18.cb5 a5–+) 0–1. cervejarj – pcmvr, net–chess.com, 2017.

3.a3 g6 4.Nf3 c6 (4...a5 5.b5+=) 5.Bd3 (5.d4 ed4 6.Qd4 d5+=) 5...Qb6 (5...Ne7 6.0-0=) 6.Nc3+/– c5 (6...d6 7.Bc4+=) 7.Nd5 Qc6 (7...Qd6 8.bc5 Qc5 9.Be2+/–) 8.b5 (8.Bb5! Qd6+–) 8...Qd6+/– 9.0-0 Ne7 10.Bc4 b6? (better is 10...Nd5 11.Bd5 a6+/–) 11.Ne7+– Be7 12.Bd5 Nc6 13.Bb2 Nd4? 14.Ba8 Nb5 15.Bd5 f5 16.Be5 Nc3 17.dc3 Qd5 18.Qd5 (18...Rf8 19.ef5 gf5 20.Qa8+–) 1–0. color1972 – Tricky.1, ChessWorld.net, 2005.

3.b5 a6 4.Nc3 ab5 5.Bb5 Bb4 6.Bb2 (6.Nd5 Bc5 7.Qg4 g6+=) 6...c6 7.Bd3 Nh6 8.a3 Bc3 (8...Bc5 9.Qh5 Nf7 10.Bc4=) 9.Bc3 0-0 10.Nf3 d5 11.0-0 de4 12.Be4 f5 (12...b5!? 13.Bd3 Bf5 14.Bf5 Nf5+=) 13.Bd3+= e4 14.Bc4 Kh8 15.Ne5 Nd7 16.Nd7 Bd7 17.Qh5 Qe8?? (better is 17...Ng4=) 18.Qh6+– Qg6 (18...Qe7 19.a4+–) 19.Qg6 (19.Qg6 hg6 20.a4+–) 1–0. Anna_Goldberg (1845) – Clyde Barrow (1710), internet, 2007.

3.b5 b6 4.Bc4 g6 5.Nc3 Bb4 6.Rb1 Bc5 7.Nge2 d6 8.Bd5 c6 9.bc6 Ne7 10.c7 Qc7 11.Ba8 Na6 12.d4 ed4 13.Nd4 Bb7 14.Ndb5 Qb8 15.Bb7 0-0 16.Ba6 f5 17.Bh6 Rf6 18.0-0 fe4 19.Ne4 Bf2 20.Rf2 Rf2 21.Nbd6 Rf5 22.Bc4 Nd5 23.Bd5 1–0. Rosner – Krahl, Tiger–SC 1999.

3.b5 Bc5 4.Bb2 d5 5.ed5 Qd5 6.Nc3 Qd4 7.Qe2 Bg4 8.Nf3 Bf3 9.Qf3 e4 10.Qe4 Ne7 11.Qd4 Bd4 12.Bc4 Nd7 13.f4 Nb6 14.Be6 Bc3 15.Bc3 Nbd5 16.0-0 Nc3 17.dc3 a6 18.c4 ab5 19.Rad1 bc4 0–1. Ferrier,Roxana – Goertz,Hans_Georg, DESC (year?).

3.b5 Bc5 4.Bb2 d6 5.Bc4 Qe7 (5...f5 6.Nf3=) 6.Nc3 c6 7.Nf3 Be6 8.Be6 Qe6 9.0-0 a6 10.bc6 bc6 (10...Nc6 11.Nd5 Rc8 12.d4 ed4 13.Nd4 Nd4 14.Bd4+=) 11.d4+/– Bb4 12.d5 Qc8 13.Rb1 c5 (13...f5!? 14.Na4 fe4+=) 14.Ne2+/– Ne7? (better is 14...Qd7+/–) 15.c3+– 0-0 (15...a5 16.cb4 ab4 17.Qb3+–) 16.cb4 cb4 17.Rc1 Qd7 (17...Qb7 18.Nd2+–) 18.Qd3 (18.Qd2 a5+–) 18...a5 19.Nd2 Na6 20.f4 Nc5 21.Qe3 Na4 22.Ba1 Rfc8 23.Nb3 Qb5 24.fe5 Rc1 25.Rc1 (25.Qc1?! Qe2 26.ef6 Qa2+/–) 25...fe5 26.Ng3 (26.Rc7 Ng6+–) 26...Nb6 27.Nd4 Qd7 1–0. Malmstroem,Jan – Hansen,Carsten, corr 3GMM½–09, 1999.

3.Bc4 Bb4 4.Nf3 Nc6 (4...c6=+) 5.Nh4 (better 5.c3 Ba5 6.d4=+) 5...d6?? (better 5...Nge7–/+) 6.Qh5+– g6 7.Ng6! Nd4 (7...hg6 8.Qh8 Pinning (8.Qh8 Deflection)) 8.Nf8!! Ke7 (8...Kf8 9.Qf7 Mate attack) 9.Qf7 1–0. Anonymous – Anonymous, lichess.org, 2020.

3.Bc4 Bb4 4.Qh5 g6 5.Qf3 Nc6 6.a3 (6.Ne2 Na5 7.Bb3 c6=+) 6...Ba5 (6...Bc5 7.Ne2=+) 7.Ne2 Qe7 (7...d6 8.0-0=+) 8.0-0 (8.Nbc3 Bc3 9.Qc3 f5=) 8...d6=+ 9.Nbc3 (9.Qb3 Qg7 10.d3=+) 9...Nd4 (9...f5!?=+) 10.Nd4= ed4 11.Nd5 (11.Nb5 Qe5 12.Bb2 a6 13.Bd4 Qe7+–) 11...Qd8 (11...Qg7 12.Qd3=) 12.Bb2 (12.Nf4 Nh6+=) 12...c5 (12...c6!? 13.Nf4 Bd2 14.Bd4 Qe7=) 13.c3+– Ne7?? (better 13...dc3 14.Bc3 Bc3 15.dc3 a6+–) 14.Nf6+– Kf8 15.cd4 h5 (15...Nf5 16.dc5 d5 17.Bd5+–) 16.dc5 dc5 (16...Bf5+–) 17.Nh7 Ke8 18.Qf7 Kd7 19.Qe6 Kc7 (19...Ke8 20.Nf6 Kf8 21.Qf7) 20.Be5 Qd6 21.Qd6 1–0. DEFFM – GuestDMZK, freechess.org, 2018.

3.Bc4 Bb4 4.Qh5 g6 5.Qf3 Qe7 6.Ne2= d6 (better 6...Nc6=) 7.Qb3+– Nc6 (better 7...d5!? 8.Bd5 Nh6+–) 8.Bg8+– Bg4 (8...Bc5 9.Bd5+–) 9.f3 (better 9.Bd5 Be2 10.Bc6 bc6 11.Qb4+–) 9...Bh5?? (9...Bd7+–) 10.Bd5 0-0-0 (10...a5 11.a3 Nd8 12.Qa4 c6 13.ab4+–) 11.Bc6 bc6 12.Qb4 f5 13.0-0 f4 (13...Kd7 14.d3+–) 14.Qa4 Kb8 (14...Kd7 15.d4+–) 15.Nbc3 Ka8 (15...Qd7+–) 16.Qc6 Kb8 17.Rb1 Kc8 18.Nb5 Qd7 (18...Rde8 19.Na7 Kd8 20.Rb8) 19.Na7 1–0. DEFFM – GuestDMZK, freechess.org, 2018.

3.Bc4 Ne7 4.a3 g6 (4...d5 5.ed5 Nd5 6.d3= (6.Nf3 Nc6 7.0-0 Be6 8.d4 Qe7 9.b5 Nd4 10.Nd4 ed4 11.Qd4) 6...Nb6 7.Bb3 a5 8.ba5 Nd5 9.Ne2 Bg4 10.f3 Be6 11.c4) 5.Ba2 (5.Nc3 f5+= (5...a5 6.b5 d5 7.ed5 Nd7 8.Qf3 Nf5 9.Nge2 Nc5 10.h4 Bd7 11.d3) 6.d3 Bg7 7.Nf3 c6 8.0-0 d5 9.Bb3 Qd6 10.Re1 Nd7 11.h3) 5...Nec6 (5...d6 6.Nf3+= (6.Nc3 Nbc6 7.Nf3 Bg7 8.0-0 Bg4 9.h3 Bf3 10.Qf3 Nd4 11.Qd3) 6...Nbc6 7.0-0 Bh6 8.Nc3 Kf8 9.d3 Bc1 10.Qc1 Kg7 11.Qe3; 5...d5 6.Nc3 d4 7.Na4 Qd6 8.Qe2 b6 9.Nf3 Ba6 10.d3 Nbc6 11.0-0) 6.c3 (6.Nc3 Nd4 7.Bb2 Bh6 8.Nge2 Ne6 9.0-0 Nc6 10.Nd5 Ncd4 11.Nd4) 6...Bh6 7.g4 (7.Nf3 d6+= (7...f5 8.d3 Bc1 9.Qc1 fe4 10.de4 Qf6 11.0-0) 8.0-0 Kf8 9.d4 Bc1 10.Qc1 Kg7 11.Qe3) 7...d6= 8.Qb3 (8.h3 Ne7 9.Qb3 Rf8 10.Nf3 f5 11.ef5) 8...Bg4?? (better is 8...Rf8 9.Qd1 f5 10.gf5 Qf6+= (10...Qh4 11.d3) 11.d3) 9.Qf7# 1–0. Eries – Pekin Dragons, ChessWorld.net, 2011.

3.Bc4 Ne7 4.Nc3 Ng6 5.Nf3 (5.a3 c6+=) 5...c6 (5...Bb4 6.Nd5 Bc5 7.0-0=+) 6.0-0 (6.b5 a6 7.bc6 dc6=) 6...d5 (6...Bb4!? 7.a3 Bc3 8.dc3 d6=+) 7.ed5= cd5 (7...Bb4 8.dc6 Nc6 9.Nd5=) 8.Nd5+= Bb4?? (better 8...Be6 9.Nc7 Qc7 10.Be6 Nf4+=) 9.Nb4+– 1–0. DEFFM – GuestVVBH, freechess.org, 2020.

2.e4 Kf7

3.Nc3 e6 4.a3 Ne7 5.d4 d6 6.Bd3 Nd7 7.Nf3 b6 (7...a5 8.Be3+/–) 8.0-0 Bb7 9.Be3 g6 10.Qd2 Bg7 11.Ne2 Rf8 12.c4 e5 13.Rad1 (13.Rfd1 Kg8+/–) 13...Kg8 14.d5 a5 15.Ng3 f5 16.ef5 Nf5 17.Nf5 gf5 18.Bg5 Qe8 19.Rfe1 Qh5 20.Be2 Qf7 21.b5 Nc5 22.Be3 Rae8 23.Bc5 dc5 24.Qe3 Bf6 25.Rd2 (25.h3 Qg6=) 25...Kh8 (25...Qg6 26.Ra2 e4 27.Nd2–/+) 26.h3 (better is 26.Red1!?+=) 26...Qg6 27.Qb3 Rg8 28.Bf1 e4 29.Nh2 Be5 (29...Bc8 30.Kh1=+) 30.Kh1 Qd6 31.g3 f4 (31...Bd4 32.Rde2=+) 32.Re4= fg3 33.Ng4 a4 (33...gf2 34.Rde2 Bc8 35.Ne5 Rg1 36.Kh2 Rf1 37.Qf3=+) 34.Qe3+= gf2 35.Re5 Re5 36.Ne5 Rg1 37.Kh2 Rf1 38.Kg2 Rg1 39.Kf2 Rg7 40.Ke1 Bc8 41.Rf2 Qe7 42.Rf3 Kg8 43.Nc6 Qe3 44.Re3 Bd7 45.Ne5 Bc8 (46.h4 Rg2+/–) +/–. guest1723 – guest1950, ICC, 2003.

3.Bc4 e6 4.Nh3 (4.b5 c6+=) 4...g6 5.0-0 (5.Nf4 Bb4 6.a3 Be7=) 5...d5 6.Bb3 Bb4 7.Qf3 de4 (7...c6 8.d4=) 8.Qe4 (8.Ng5 Kg7 9.Qe4 Nc6 10.Ne6 Be6 11.Qe6 Nh6=) 8...Nc6 9.Bb2 Nge7 (9...Bd2? 10.Rd1 Kg7 11.Rd2+– (worse 11.Nd2 e5+–)) 10.Nf4 e6 seems the pivot of the position 10...Nd5?? (better 10...Qd6=) 11.Nd5+– (11.Bd5?! ed5 12.Nd5 Be7+=) 11...ed5 12.Bd5 Kg7 13.Bc6 1–0. onur604 (2320) – freechess2018 (2015), lichess.org, 2020.

2.e4 g6

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

3.Nc3 e5 4.a3 Nh6 (4...d6 5.Nf3+=) 5.Nf3+– d6 6.d4 Bg4 7.de5 fe5 8.Bg5 Qd7 9.Nd5 Qc6?? (better 9...Ng8+–) 10.Bb5!!+– Bf3 (10...Qb5 Deflection from c7 11.Nc7 Theme: Double Attack) 11.Qf3 Qb5 12.Nc7 Kd7 13.Nb5 Nc6 14.Qh3 Ke8 15.Nc7 Kf7 16.Qe6 (16.Qe6 Kg7 17.Bf6) 1–0. Johannes,Jan – Krahl,Wolfgang, corr TKM/A006, 1999.

3.Bc4 e6= 4.b5 Bg7 (4...d5 5.ed5 ed5 6.Be2=) 5.Nf3+= Ne7 6.0-0 0-0 (6...d5 7.ed5 ed5 8.Be2=) 7.Nc3 d5 8.ed5 ed5 9.Bb3 c6 10.a4 (10.Ba3 Re8+=) 10...Bg4 11.Ba3 Re8 12.Re1 Nf5? (better 12...Kh8+=) 13.Re8+– Qe8 14.bc6 bc6 (better 14...Bf3 15.gf3 Nc6 16.Nd5 Qd8 17.Nc7 Kh8 18.Na8 Qa8+–) 15.Nd5! cd5 16.Bd5 (16.Bd5 Kh8 17.Ba8+–) 1–0. GuestWKWG – GuestZBQH, freechess.org, 2019.

3.e5?? fe5 4.Bb2 Nf6 5.Be5 Nc6 –/+.

3.e5?? f5?? 4.Nf3+= e6 5.b5 (5.a3 Ne7+/–) 5...b6 (5...a6 6.Nc3+=) 6.Nc3 (6.c4 d6 7.Nc3 de5 8.Ne5 Bb7+/–) 6...Bb7 7.d4 Bb4 8.Bd2 a6 9.a4 Bc3 10.Bc3 ab5 11.ab5 Ra1 12.Ba1 Ne7 13.Ke2 0-0 14.h4 Nd5 15.Qd2+/– Kf7? 16.h5+– Rg8 17.c4 Ne7 18.Ng5 Kg7 19.h6 Kf8 20.Nh7 Ke8 21.Nf6 Kf8 22.Ng8 Kg8 23.Qg5 Kh7 24.Qf6 (24.Qf6 Qg8 25.Qe7 Kh8 26.h7 Bf3 27.Kf3 Nc6 28.bc6 dc6 29.Qf6 Qg7 30.Qd8 Qf8 31.Qf8#) 1–0. mtr – oppo, internet, 2009.

2.e4 Nh6

3.Bc4 e6 4.b5 Nf7 5.Nf3 Bc5 (5...a6!? 6.Nc3 Nd6=) 6.d4+– Bb4 (6...Bb6 7.a4 c6 8.0-0+–) 7.c3 Ba5 8.Ba3 (8.0-0 c6+–) 8...c6 (8...a6 9.Qb3+–) 9.0-0 d5 (9...a6 10.bc6 Nc6 11.Bb3+–) 10.Bd3 (10.ed5 cd5 11.Bd3 a6 12.ba6 Na6+–) 10...Bc7 (10...de4!? 11.Be4 Nd6 12.Bd6 Qd6+–) 11.ed5 cd5 12.Qc2 g6 (12...Nd6 13.Nbd2 a6 14.ba6 (14.Bh7?! ab5 15.Bc5 b6 16.Bd6 Qd6=) 14...Na6 15.Bh7+–) 13.c4 Bd6 (13...dc4 14.Bc4 Bd6 15.Re1+–) 14.cd5 Ba3 (14...0-0 15.Bd6 Qd6 16.Bg6 hg6 17.Qg6 Kh8 18.Qf6 Kh7 19.de6 Qe6 20.Ng5 Ng5 21.Qf8+– (21.Qg5?! Qf6 22.Qf6 Rf6+=)) 15.de6 Be6? (15...Bd6 16.Re1 0-0+–) 16.Re1 (16.Na3?! 0-0+–) 16...Qe7 (16...0-0 17.Re6 Qd7+–) 17.Na3 Qa3 (17...Nd7 18.d5! Nde5 19.de6 Nf3 20.gf3 Ne5+–) 18.Qc8 Nd8 19.Re6 Qe7 20.Re7 Ke7 21.Re1 Kf7 (21...Ne6 22.Qe6 Kd8 23.Qd6 Nd7 24.Re7 Kc8 25.Qd7 Kb8 26.Qb7) 22.Bc4 (22.Qc7 Kf8 23.Qe7 Kg8 24.Bc4 Ne6 25.Be6) 22...Kg7 (22...Ne6 23.Qe6 Kg7 24.Qe7 Kh6 25.Re4 g5 26.Qf6 Kh5 27.Qg5) 23.Re7 Kh6 (23...Nf7 24.Rf7 Kh6 25.Qh3) 24.Qh3 1–0. DEFFM – GuestBSLX, freechess.org, 2019.

3.d4 Nf7 4.Nf3 d6 (4...e5!?+=) 5.Bc4 (5.Nc3 e5+–) 5...Bg4 (5...e6 6.Qe2+–) 6.0-0 Bh5 (6...e5 7.Nbd2+–) 7.Be6 Bf3? (better 7...c6+–) 8.Qf3 (8.gf3?! c6+–) 8...Ng5 (8...c6+–) 9.Bg5 Nc6 (9...c6 10.Bd2+–) 10.Qh5 (better 10.Be3 Qb8+–) 10...g6 11.Qd1 fg5 12.b5 Nb8 (12...Na5 13.Qf3 Qb8+–) 13.Qf3 Qc8 1–0. DEFFM – GuestRVGX, freechess.org, 2019.

1...h5

2.a3 b5 3.Bb2 Nf6 4.f3 (4.e3 c6+=) 4...d5 (4...a5 5.e4=) 5.e3 (5.e4 a6+=) 5...a6= 6.Ne2 (6.Be2 e6=) 6...Bf5 (6...Nbd7 7.f4=) 7.Nbc3 (7.Nd4 Bd7=) 7...e6 8.d4 (8.Nd4 Bg6=) 8...Nbd7 (8...Bd6 9.Kf2=+) 9.Ng3 (9.Nc1 Bd6=) 9...Bg6 10.h4 (10.Bd3 Bd3 11.cd3 a5=+) 10...Nb6 (10...Bd6 11.f4=+) 11.Qd2 (11.e4 Be7=+) 11...Kd7 (11...Bd6 12.Rh3–/+) 12.0-0-0 (12.e4 Be7=) 12...Kc8 (12...c6 13.e4–/+) 13.Qe1 (13.e4 c6=) 13...Kb7 (13...Nc4 14.Bc4 bc4 15.e4=) 14.e4 Nc4 15.Bc4 bc4 16.e5 (16.Nce2 de4 17.Nf4 Bf5 18.fe4 Bg4=) 16...Nd7 17.Na4 (17.Nce2 Be7 18.Nf1 a5=) 17...a5 (17...Be7 18.Ne2=+) 18.Nc5 (18.b5 Rb8=) 18...Nc5 (18...Kc8 19.Ne2=+) 19.bc5= Kc6 ½–½. Letov,Petr (2225) – Kozenkov,Valery (2110), St. Petersburg RUS, Blockade Open, 2011. (=1.a3 h5 2.b4 b5)

2.a3 g6 (--> 1.b4 g6 2.a3 h5).

2.Ba3 g6 3.Nf3 Bg7 4.d4 Nc6 5.c3 d6 6.e4 Bg4 7.Bc4 Nf6 8.h3 Be6? (better is 8...Bc8 9.b5 Na5+=) 9.d5+– Bd5 (9...Bd7 10.dc6 Bc6 11.Nbd2+–) 10.ed5 Nb8 11.0-0 Qd7 12.Nbd2 0-0 13.Nd4 c6 14.Re1 cd5 15.Bb5 Qd8 16.Re3 a6 17.Bd3 e5 18.N4f3 e4= 19.Ne4 de4 20.Be4 Nc6 21.Rd3?? Ne4–+ 22.b5 ab5 23.Rb1 Ra3 24.Qc1 Ra2 25.Rb5 Nf2 26.Rb7 Nd3 27.Qb1 Re2 28.h4 Bc3 29.Qd3 Bd4! 30.Nd4 Re1 31.Kf2 Rfe8 32.Rb2 Qf6 33.Nf3–+ Nd4! 34.Kg3 Nf5 35.Kf2 Qb2 36.Nd2 R8e2! 37.Qe2 Re2 38.Ke2 Nd4 39.Kd3 Qc2 40.Kd4 Qd2 41.Ke4 Qg2 42.Kf4 Qg4 43.Ke3 d5 44.Kd3 Qe4 45.Kd2 d4 46.Kd1 d3 47.Kd2 Qe2 48.Kc1 Qc2# 0–1. pikelet – pieeater, ChessWorld.net, 2011.

2.a4 g6 3.Bb2 f6 4.e4 Bg7 (4...e6 5.b5+=) 5.Bc4 (5.Nf3 h4+=) 5...d6 (5...e6 6.d4+=) 6.f3 (6.Nf3 e5+/–) 6...Nc6 7.Bg8 (7.b5 Na5 8.Ba2 e5+=) 7...Rg8= 8.Ne2 (8.b5!? Na5 9.Bc3=) 8...Nb4+= 9.d3 (9.0-0 h4+=) 9...Be6 (9...Nc6 10.0-0–/+) 10.0-0+= Qd7 11.c3 Nc6 12.Nd2 0-0-0 13.Ba3 g5 14.c4 g4 15.g3? Bh6 16.f4–/+ Rh8 17.Nb3 Bg7 18.Rb1 h4 19.f5 Bf7 20.Nbd4 Nd4 21.Nd4 hg3 22.hg3 Bh5 23.Ne6+= Rdg8 24.c5 dc5?? 25.Bc5?? b6= 26.Ba3 Bf8 27.Qd2 Bf7–/+ 28.Nd4?? Rh3 29.Qg2?? Rgh8 30.Nb5 Kb8 31.Rb2 a6 32.Nd4 Qd4 33.Rff2 Qd3 34.Bb4 Qd1 35.Rf1 Qd4 36.Rff2 a5! 37.Be1 Ka7 38.Rbd2 Qa4 39.Kf1 Rh1 40.Ke2 Bc4 41.Rd3 Bd3 42.Kd3–+ Re1 43.Rd2 Qb3 44.Kd4 c5# 0–1. Mphilliber – pieeater, ChessWorld.net, 2010.

2.Bb2 b5 3.e3 Nc6+= 4.a3 a5 (4...Nf6 5.Nf3+=) 5.Bb5 (5.c4 bc4 6.b5 Na7 7.Bc4 Bb7+–) 5...ab4 6.Bc6 dc6 7.ab4 Bb7 (7...Ra1 8.Ba1 Nf6 9.Nf3+=) 8.Nf3 Qd5? (better 8...Ra1 9.Ba1 Nf6+=) 9.Ra8 (9.Nc3 Qd8 10.Ne4 e6+–) 9...Ba8 10.Nc3 Qc4? (better 10...Qd8+–) 11.Qa1 Bb7 12.Qa7 Qb4 (12...Qa6 13.Qb8 Bc8 14.Qc7 Qb7 15.Qb7 Bb7+–) 13.Qb8 Kd7 14.Ne5 Ke6 15.Nd3 Qb6 16.Qf8 c5 17.Qg7 Rh6 18.Qg8 (18.Na4 Rf6 19.Ndc5 Kd5 20.e4 Kc4 21.Nb6 Kc5 22.Nd7 Kc6 23.Nf6 ef6 24.Qf7 Kd6 25.Ba3 c5 26.Qb7 Ne7 27.d4 Ke6 28.Bc5 Kf7 29.Qe7 Kg6 30.h4 f5 31.Qg5 Kf7 32.ef5 Ke8 33.Qe7) 18...Rg6 19.Nf4 (better 19.Qe8!? Rg4 20.f3 Qc6 21.Qc6 Bc6 22.fg4 hg4 23.Nc5 Kd6 24.N3e4 Be4 25.Ne4 Kd7+–) 19...Kf6 20.Ne4 (20.Ne4 Kf5 21.Qf7 Qf6 22.Bf6 Rf6 23.Qh5 Ke4 24.d3) 1–0. GuestNTFH – GuestNQZV, freechess.org, 2020.

2.Bb2 c5 3.b5 Qa5 4.e3 a6 5.a4 ab5 1–0. GuestNSXV – GuestZGZW, freechess.org, 2017.

2.Bb2 e5 3.Be5 Qe7 4.Bc7+/– Qb4 5.e3 Qc5+/– 6.Bf4 Qa5 7.Bc4 Qf5 8.Nc3 Nc6 9.Nd5 Nb4? 10.Nc7 Kd8 11.Na8 Nc2 12.Kf1 Na1 13.Qa1 (13...b5 14.Bb3+–) 1–0. Wall,Bill – Canadian, internet, 2003.

2.Bb2 Nf6 (--> 1.b4 Nf6 2.Bb2 h5).

2.b5 b6 3.c4 (3.Nf3 Nf6=) 3...Bb7 (3...Nf6 4.Nc3+=) 4.Nc3 (4.Nf3 a6+=) 4...h4 (4...Nf6 5.Nf3+=) 5.Nf3 (5.d4 Nf6+=) 5...h3 (5...Nf6 6.d4+=) 6.gh3+/– e5 (6...Nf6 7.d4+/–) 7.Rg1 Nf6 (7...d6!?+/–) 8.Ne5+– Qe7 (8...d6 9.Nf3+–) 9.d4 Ne4 (9...d6 10.Nd3+–) 10.Ne4 Be4 11.Rg4 Bf5?! (11...d5 12.cd5 Bd5 13.e4+–) 12.Rf4 Be6 13.Bg2 c6 14.Qc2 f6 15.Ng6 Qb4 16.Bd2 Qc4 17.Qc4 Bc4 18.Nh8 Be2 19.Re4 Kd8 20.Nf7 Kc7 21.Ke2 Bb4 22.Bb4 (22.Bb4 a5 23.Bd6 Kb7 24.a4 Na6 25.bc6 Ka7 26.cd7 f5 27.Re8 Re8 28.de8Q b5 29.Qc8 ba4 30.Qb7#) 1–0. pierre – poppofas, internet, 2010.

2.b5 d6 3.a4 Bg4 4.c4 (4.f3 Bd7=) 4...Bc8 (4...e5 5.g3=) 5.Bb2 Bg4 (5...e5 6.d4=) 6.Qb3 (6.d4 g6+=) 6...Bc8 (6...e5 7.d4=) 7.f3 (7.d4 Nf6+=) 7...f6 (7...e5 8.e4=) 8.g3 (8.d4 e5+=) 8...g6 (8...e5 9.e4=) 9.e4 Bg7 10.d4 Be6 (10...h4 11.Bh3=) 11.d5 Bf7 (11...Bd7 12.Bh3=) 12.Bd3 (12.Bh3 h4+=) 12...e5 13.Ne2 Ne7 14.0-0 0-0 (14...h4!?=) 15.Nd2 c6 16.f4 cd5 17.cd5 f5 18.ef5 (18.a5 Nd7 19.Qa3 Nc5+=) 18...Nf5 (18...gf5 19.Bc4+=) 19.Bf5 gf5 20.fe5 (better 20.Rad1 Nd7 21.fe5 de5 22.Ba3+–) 20...Bg6?? (better 20...de5 21.Nc3 Qb6 22.Kh1 Qg6+=) 21.ed6 (21.e6!? Bb2 22.Qb2 h4+–) 21...Bb2 22.Qb2 Qd6 23.Nd4 (23.Qd4 Nd7+–) 23...Nd7 (23...Qd5 24.Rae1 Nd7 25.Re7+–) 24.N2f3 (24.Ne6 Rf7+–) 24...Nc5 (24...Qd5 25.Rad1+–) 25.Qa3 (25.Nh4 Ne4+–) 25...b6 (25...Qd5 26.Rad1 Rad8 27.Qc1 Na4 28.Nc6 bc6 29.Rd5 Rd5 30.Qg5+–) 26.Nb3 (better 26.Ne6!?+–) 26...Rac8 (26...Qd5 27.Nc5 Qc5 28.Qc5 bc5 29.Ne5+–) 27.Nc5 Rc5 28.Rac1 (28.Rad1 f4 29.Ng5 Bc2+–) 28...Qd5 (28...f4 29.Rc5 bc5 30.Nh4+=) 29.Rc5 bc5 30.Nd2?? (better 30.Qe3!?+–) 30...f4 (better 30...Qd2!? 31.Qc5 Rf7–+) 31.Qb3 Qb3 32.Nb3 Bd3 (better 32...c4 33.Na5 Bc2=) 33.Nc5?? (better 33.Rf4 c4 34.Nc1+–) 33...Bf1–+ 34.Kf1 fg3 35.Kg2 h4 (better 35...gh2 36.Kh2 Rf4–+) 36.hg3–/+ Rf5 37.gh4?? (better 37.Nd7 Rg5 38.Nf6 Kg7 39.Ne4–+) 37...Rc5–+ 38.Kg3 Kf7 39.Kf3 Kg6 40.Kg4 (40.Ke4 Rc4 41.Kd5 Ra4–+) 40...Rc4 41.Kh3 Ra4 42.h5 (42.Kg3 Ra5 43.b6 ab6–+) 42...Kh5 43.Kg3 Rb4 44.Kf3 Rb5 45.Ke3 a5 46.Kd3 a4 47.Kc3 Rb8 48.Kc4 (48.Kd4 a3 49.Kc3 a2 50.Kd3 a1Q 51.Kc4 Qa4 52.Kc5 Rb5 53.Kc6 Qa6 54.Kd7 Rb7 55.Kd8 Qa8) 48...a3 49.Kc5 (49.Kc3 a2 50.Kd4 a1Q 51.Kc4 Qa4 52.Kc5 Rb5 53.Kd6 Qa6 54.Kd7 Rb7 55.Kd8 Qa8) 49...a2 50.Kc6 (50.Kd4 a1Q 51.Ke4 Rb4 52.Kf5 Qa5 53.Kf6 Rb6 54.Ke7 Qa7 55.Ke8 Rb8) 50...a1Q 51.Kc7 Qb1 (51...Qe5 52.Kc6 Rc8 53.Kb7 Qb8 54.Ka6 Rc1 55.Ka5 Ra1) 52.Kc6 Rc8 (52...Qb5 53.Kd6 Rd8 54.Ke7 Rd7 55.Kf6 Kg4 56.Ke6 Qf5) 53.Kd7 Qb7 54.Kd6 Rc6 (54...Rd8 55.Ke6 Qe4 56.Kf7 Re8 57.Kf6 Qg6) 55.Kd5 (55.Ke5 Qb5 56.Ke4 Rc4 57.Ke3 Qb3 58.Ke2 Rc2 59.Ke1 Qb1) 55...Qb5 56.Kd4 (56.Ke4 Rc4 57.Ke3 Qb3 58.Ke2 Rc2 59.Ke1 Qb1) 56...Rc4 57.Kd3 (57.Ke3 Qb3 58.Ke2 Rc2 59.Ke1 Qb1) 57...Qb3 58.Kd2 (58.Ke2 Rc2 59.Ke1 Qb1) 58...Rc2 59.Kd1 (59.Ke1 Qb1) 59…Qb1 0–1. afsharian – gabi1970 (1835), lichess.org, 2018.

2.b5 f6 3.e4 d6 4.Be2+/– g6 5.d4 Nh6 6.Nf3+/– Nf7 7.Nh4 Rg8 8.f4 c6 9.0-0+– Bd7 10.f5 g5 11.Bh5 gh4 12.Bf7 Kf7 13.Qh5 Kg7 14.Bh6 (14...Kh8 15.Bf8#) 1–0. pierre (2040) – juanpacio (1645), internet, 2006.

2.b5 Nf6 3.Bb2=.

2.b5 g6 3.Bb2 f6 (--> 1.b4 g6 2.Bb2 f6 3.b5 h5).

2.b5 Rh6 3.d4+= Rb6 4.e4 g6 (4...d5 5.ed5 Qd5 6.c4 Qe4 7.Ne2+=) 5.Nc3 Bg7 6.Nf3 a6 (6...Nf6!?+/–) 7.Nd5+– Rb5 8.Bb5 ab5 9.0-0 c6 10.Ne3 b6 11.Bb2 c5 12.Rb1 (12.Re1!? Bb7 13.e5 b4+–) 12...Ra2+/– 13.c4 bc4 14.Nc4 Nf6 15.dc5+– Ne4? 16.Bg7 d5 17.cd6 Ra4 18.Qa4 Nd7 19.de7 Qe7 20.Nb6 Nec5 21.Qa8 Qd8 22.Nd7 Kd7 23.Rfd1 Ke8 24.Rd8 Kd8 25.Ne5 Nb7 26.Rb7 Ke8 27.Qc8# 1–0. Taulien,Hans_Juergen – Olsfelder,Nils, remoteschach.de, 2002.

2.Nc3 g6 3.e4 Bg7 4.Nf3 d6 5.d4 Nc6 6.Bf4 Bg4 7.Be2 Nf6 8.Nh4 Be2 9.Qe2 Qd7 10.0-0 Nd4 11.Qd3 0-0-0 12.Qd4 Kb8 13.b5 Bh6 14.a4 Bf4 15.Ne2 Be5 16.Qe3 Ba1 17.Ra1 Ng4 18.Qb3 e6 19.Rd1 g5 20.Nf3 f6 21.h3 Ne5 22.a5 g4 23.c4 gf3 24.Ng3 fg2 25.Kg2 h4 26.Nf1 Qg7 27.Kh2 Rhg8 28.Ne3 Nf3 29.Kh1 Qg1 30.Rg1 Rg1# 0–1. calchess10 – pieeater, ChessWorld.net, 2012.

2.c4 e5 3.a3 f6 (3...Nf6 4.e3=) 4.Nc3 a5 (4...Nc6 5.e3+=) 5.b5 c6 (5...Ne7 6.e4+=) 6.d4 cb5 (6...h4+–) 7.Qd3 (better 7.Nb5 Nc6 8.Nf3+–) 7...b4?? (better 7...bc4 8.Qg6 Ke7+=) 8.Qg6+– Ke7 9.Nd5 Kd6 10.Nf3 Ne7 (10...Rh6 11.de5 Kc6 12.Bh6 Nh6 13.ab4+–) 11.de5 Kc5 (11...Kc6 12.Nd4 Kc5 13.ab4 ab4 14.Nb3 Kc6 15.Ne7 Qe7 16.Nd4 Kb6 17.Ra8 Qe5+–) 12.Be3 Kc4 (12...Kc6 13.Nd4 Kc5 14.Ne6 Kc4 15.Qd3) 13.Qd3 1–0. Janek – bwbor, internet, 2016.

2.c4 f5 3.Nf3+= a5 4.b5 c6 5.Nc3 cb5 6.Nb5 d6 7.d3 d5 (Better is 7...Nf6!?+=) 8.cd5 Qd5?? (Better is 8...Nf6+–) 9.Nc7 Kd8 10.Nd5 a4 11.Be3 e6 12.Bb6 Ke8 13.Nc7 Ke7 14.Qc1 g6 15.Qc5 Kf6 (15...Kf7 16.Ne5 Kg7 17.Ne8 Kh6 18.Qf8 Kg5 19.Be3 f4 20.Qf4) 16.Qf8# 1–0. Baumann,Heinz – Bruestl,Sabrina, remoteschach.de, 2003.

2.c4 f6 3.Nc3 c6 (3...e5 4.b5+=) 4.e4 (4.Qc2 Nh6+–) 4...g6 (4...e5 5.Rb1+–) 5.d4 (5.Nf3 Na6+–) 5...Nh6 (5...e5!? 6.b5 Bb4+–) 6.Nf3+– Qc7 (6...Na6 7.b5 Nc7 8.Bd3+–) 7.Bd3 (7.Qb3 a5 8.b5 d6+–) 7...e6 (7...e5 8.c5 ed4 9.Ne2+– (9.Nd4?! a5+–)) 8.a3 Nf7 (8...Bg7 9.0-0+–) 9.Be3 (9.0-0 Be7+–) 9...d6 10.0-0 Nd7 11.Nh4 (11.Qb3 e5+–) 11...Rg8 12.f4 a5 (12...Bh6 13.e5 f5 14.Re1+–) 13.d5 (better 13.Qf3+–) 13...Nb6?? (13...e5 14.f5 Bh6+–) 14.c5 dc5 15.bc5 cd5 (15...Nd7 16.de6 Nc5 17.ef7 Qf7 18.f5+–) 16.Nb5 Qc6 17.cb6 de4 (17...Bc5 18.Nc7 Ke7 19.Bc5 Qc5 20.Rf2 g5+–) 18.Rc1 Qd7 19.Nc7 Ke7 20.Bb5 Qd1 21.Rfd1 Nd6 22.Rd6 Rb8 23.Be8 Bh6 24.Re6! Kf8 (24...Be6 25.Bc5 Deflection (25.Bc5 Decoy)) 25.Rf6 Kg7 26.Rg6 Kh7 27.Nd5 Rg6 (27...Rf8 28.Rc7 Bd7 29.Rd7 Kh8 30.Rh6 Kg8 31.Rg6 Kh8 32.Bd4 Rf6 33.Bf6) 28.Bg6 Kg7 (28...Kh8 29.Bd4 Bg7 30.Bg7 Kg8 31.Rc7 Bd7 32.Nf5 Bf5 33.Nf6) 29.Rc7 Kh8 (29...Bd7 30.Rd7 Kf8 31.Nf6 Bf4 32.Rf7) 30.Rh7 Kg8 31.Nf6 Kf8 32.Bc5 1–0. rcm06 (2110) – bigfrostgiant, gameknot.com, 2018.

2.d3 b6 3.Nc3 Bb7 4.e4 e6 5.Be2 h4 6.Nf3 h3 7.0-0 hg2–/+ 8.Kg2 d5 9.e5? Nd7 10.d4 Bb4–/+ 11.Bg5 f6–+ 12.ef6 gf6 (13.Bd2 e5–+; < 12...Ngf6 13.Qd3–/+) 0–1. stardom (2130) – threefingers, net–chess.com, 2005.

2.d3 Nf6 3.Nf3=.

2.d3 g6 3.Bb2 f6 4.Nf3 d6 5.g3 Nc6 6.a3 Bf5 7.Bg2 Qd7 8.0-0 Bh3 9.Nbd2 g5 10.Ng5 Bg4 11.Ngf3 0-0-0 12.b5 Ne5 13.a4 f5 14.Ne5 de5 15.Be5 Nf6 16.c4 h4 17.h3 Bh5 18.a5 Bg7 19.Qa4 Be2 20.Rfe1 Bd3 21.Nf3 hg3 22.Bg3 Ne4 23.Rad1 e6 24.Bf1 Ng3 25.fg3 f4 26.Bd3 Rh3 27.Bf1 Rg3 28.Bg2 Qe7 29.Kh2 Rh8 30.Kg1 Qc5 31.Kf1 e5 32.Qc2 Kb8 33.Qd3 Bf6 34.Rd2 Qb4 35.a6 b6 36.Qe4 Rf3 37.Bf3 Bh4 38.Qa8# 1–0. The Word – pieeater, ChessWorld.net, 2012.

2.d4 e5=.

2.d4 Rh6? 3.Bh6+– gh6 4.e3 Nf6 5.Nd2 d5 6.Be2 Nc6 7.b5 Nb4?? 8.a3 Nc2 9.Qc2 Qd6 10.Ngf3 Bd7 11.Ne5 0-0-0 12.Nf7 Re8 13.Nd6 (13.Nd6 ed6 14.Rc1+–) 1–0. mtrold1 – opponent, internet, 2001.

2.e3 d6 3.Be2 h4 4.c4 Nf6 5.Nc3 Nc6 6.b5 Ne5 7.d4 Ng6 8.Nf3 a6 9.ba6 Ra6 10.0-0 Bg4 11.h3+/– Bf5 12.Ng5 e5 13.e4 Bd7 14.c5!+– Ra8 15.Qb3 d5 16.ed5 Qe7 17.Bc4 Nh5 18.d6! cd6 19.Bf7 Kd8 20.Qb7 Ngf4 21.Qa8 Bc8 22.Nd5 Nd5 23.Ne6 Kd7 24.Qa4# 1–0. luciano59 (2105) – juanpacio (1735), internet, 2006.

2.e4 a5 3.ba5 Nc6 4.Nf3 e5 5.Bb2 (5.Bc4 Ra5 6.Nc3 Bc5=) 5...Ra5= 6.a4 h4 (better 6...Nf6=) 7.Bd4?? (better 7.Bb5=) 7...Rd5 (better 7...ed4 8.Bb5 h3–+) 8.Ba7 (better 8.ed5 Nd4 9.Nc3+– (9.Ne5?! Qe7 10.f4 d6=)) 8...Qg5?? (better 8...Rd6 9.Be3 Rg6=) 9.Bc4 (better 9.Ng5 Ra5 10.Be3 f6+–) 9...d6?? (9...Qf4 10.Bd5 Na7 11.Nc3+–) 10.d3 (10.Ng5!? Ra5 11.Nf7 Rh7+–) 10...Be6?? (10...Qg6 11.Bd5 Na7+–) 11.Bb8! Rd3 (11...Nb8 12.Ng5) 12.Nfd2?? (12.cd3 Qd8 13.Be6 fe6 14.Bc7 Qc7+–) 12...Nd8 (better 12...Qg2 13.Rf1 Qe4 (13...Nb8?! 14.cd3 d5 15.ed5 Bd5 16.Nc3 Bc4 17.dc4=+) 14.Qe2 Qe2 15.Ke2 Rh3 (15...Nb8?! 16.Bd3 d5 17.c4–+) 16.Bc7 Nd4 17.Kd1 Nf6–+) 13.Na3?? (better 13.cd3 Qg2 14.Rf1 Bc4 15.dc4+–) 13...Rd2 (better 13...Qg2 14.Bd3 Qh1 15.Nf1 c6–+) 14.Ba2?? (better 14.Qd2 Qg2 15.Rf1–+) 14...Nc6 (better 14...Rd1 15.Kd1 Qg2 16.Kd2 Ba2 17.Nb5–+) 15.Ba7 (15.Qd2 Qg2 16.0-0-0 Ba2 (worse 16...Nb8 17.Be6 fe6 18.Qa5–+) 17.Bc7 Nf6–+) 15...Ke7 (15...Rd1 16.Kd1 Qg2 17.Kd2 Na7 18.Be6 Qf2 19.Kc1 fe6 20.Nb5 Nb5 21.ab5–+) 16.a5 (16.Qd2 Qg2 17.Rf1 Na7–+) 16...Nb4 (16...Rd1 17.Rd1 Qg2 18.Rf1 Qe4 19.Be3 Ba2 20.c3–+) 17.Nb1 (17.Qb1 Rf2 18.Qb4 Qg2 19.0-0-0 Ba2 20.Bf2 Qf2 21.Qb7–+) 17...Nc6 (better 17...Nc2 18.Qc2 Rc2–+) 18.Qd2?? (18.Na3 Rd1 19.Rd1 Qg2 20.Rf1 Qe4 21.Be3 Ba2 22.c3–+) 18...Bd5 (better 18...Qg2 19.Rf1 Bh3–+) 19.Na3 (better 19.Qg5 f6 20.Qe3 Ba2 21.Ra2+–) 19...Bb3?? (better 19...Qd2 20.Kd2 Be4=+) 20.Qd3 (20.Qd3 Ba2 21.0-0–+; better 20.Qg5 f6 21.Qe3 Ba2 22.Ra2+–) 1–0. Pereira – Paliester, internet, 2021.

2.e4 Nc6 3.a3 e5 4.Nf3= f6 5.Bc4 Nh6 6.Ng5 fg5?? 7.Qh5+– g6 8.Qg6 Ke7 9.Qg5 Kd6 10.Qg6 Ke7 11.d3 Rg8 12.Bg5# 1–0. guest945 – guest640, ICC, 1999.

2.e4 d6 3.d4 g6 4.Nf3 a6 5.Bd3 Bg4 6.h3 Bf3 7.Qf3 e6 8.c3 Qf6 9.Nd2 Qf3 10.Nf3+/– Nd7 11.Rb1 b6 12.0-0 Bh6+= 13.Ng5 Bg5 14.Bg5 e5 15.Be3 Nh6 16.f4 c6 17.fe5 de5 18.de5 Ne5 19.Bd4+– 0-0?? 20.Be5 Rfd8 21.Rbd1 c5 22.Bc7 Rd7 23.Bb6 cb4 24.cb4 Rb8 25.Ba5 Kg7 26.Ba6 Rd1 27.Rd1 Re8 28.b5 Re4 29.b6 Nf5 30.b7 Re8 31.Rd8 Rd8 32.Bd8 (32.Bd8 Nd4 33.b8Q Nf5 34.Qe5 Kg8 35.Bf6 Kh7 36.Qe8 g5 37.Qh8 Kg6 38.Bd3 h4 39.Qg7 Kh5 40.Qg5#) 1–0. b4_player – opponent, gamecolony.com, 2007.

2.e4 f5 3.ef5+/– d6 4.Ne2 d5 5.Nbc3 1–0. marr3396 – agust03, internet, 2010.

2.e4 f6 3.c4 (3.Nc3 e5 4.b5 Bb4+–) 3...d6 (3...e5 4.b5+=) 4.Bb2 (4.Be2 Kf7 5.d4 e5 6.de5 Be7 7.e6 Be6+–) 4...g5 (4...Bg4 5.Nf3+–) 5.Nf3 (5.Nc3 Nc6+–) 5...Rh7 (5...Nc6 6.Ng5 e5 7.Nf3+–) 6.Be2 (6.Nc3 Nh6+–) 6...g4 7.Nh4 e5 (7...Bg7 8.0-0+–) 8.0-0 (8.Nc3 Nc6+–) 8...Nh6 (8...Ne7 9.Nc3+–) 9.d4 (9.Nc3 Nc6+–) 9...f5 10.de5?? (10.Nf5 Nf5 11.ef5 Bf5 12.Bd3+– (12.de5?! de5 13.Nc3 Qd1 14.Rfd1 Nc6=)) 10...Be6?? (better 10...Qh4 11.ed6 Bd6–/+) 11.c5?? (11.ef5 Nf5 12.Nf5 Bf5+–) 11...d5?? (better 11...Qh4 12.ed6 cd6 13.cd6 Rd7=) 12.ef5+– Bf5 (12...Nf5 13.Nf5 Bf5+–) 13.Nf5 Nf5 14.Bb5 (14.Bd3 Rf7 15.e6 Rf6 16.Bf5 Nc6+–) 14...c6 (14...Nc6 15.Nc3 Nfe7 16.Ne2+–) 15.Ba4 (15.Bd3 Qg5 16.Qc2 Na6+–) 15...d4 (15...Re7 16.h3 Rg7+–) 16.Qd3 Rf7 17.Nd2 (better 17.Bb3 Qe7 18.Bd4 Nd4 19.Bf7 Kf7 20.Qd4+–) 17...Nd7 (17...Na6 18.a3 Nc7+–) 18.Ne4 (better 18.Bb3 Qg5 19.f4+–) 18...Ne5+– 19.Qc4?? (19.Rfe1 Bg7 20.Nd6 Nd6 A) 21.cd6?! Kf8 22.Qh7 Qg5= (worse 22...Qd6 23.Bb3+=); B) 21.Qd4+–) 19...Nc4–+ (19...Nc4 20.Rfe1 Be7–+ (20...Nb2?? 21.Nf6)) 0–1. fgn7700g – canelo, internet, 2018.

2.e4 Nf6 A) 3.Nc3 A1) 3...d5 4.e5 Ne4 5.Nce2 e6 6.c3+=; A2) 3...e6 4.a3 a5 5.b5 d5 6.e5+=; A3) 3...e5 4.a3 d5 5.ed5 Nd5 6.Bb2=; B) 3.Qe2 B1) 3...Nc6 4.e5 Ng4 5.c3 d6 6.d4=; B2) 3...d6 4.d4 e5 5.d5 c6 6.Nc3=; B3) 3...e5 4.c3 Qe7 5.Nf3 d6 6.d3=; C) 3.e5 Nd5 4.a3 d6 5.d4 a5 6.b5+=.

2.f3 g6 3.Bb2 f6 4.e4 Nc6 5.c3 d6 6.b5 Ne5 7.d4 Nc4 8.Bc4 Bd7 9.Qb3 g5 10.Bf7# 1–0. primemover – pieeater, ChessWorld.net, 2012.

2.Nf3 a5 3.b5 h4 4.Bb2 e6 (4...Nf6 5.c4+=) 5.e4 Be7 (5...Nf6!? 6.e5 Nh5+=) 6.Bg7+– Rh7 7.Bb2 Bf6 (7...d6+–) 8.e5 Be7 9.Bd3 Rg7 10.g3 d6 11.ed6 Bf6 12.dc7 Qc7 13.Bf6 Nf6 14.Nh4?? (better 14.Nc3+–) 14...Qe5–/+ 15.Qe2 Qa1 16.c3? (better 16.0-0!? Qa2 17.Nf5–/+) 16...Qa2 17.Nf5 Rg5 18.h4?? (18.Nd6 Kf8 19.Nc4 Bd7–+) 18...Rg8 (better 18...Rf5 19.Bf5 Qd5–+) 19.0-0 Nbd7?? (better 19...a4 20.Qe3 Qd5–+) 20.Re1?? (better 20.Bc4 Qc2 21.Be6 fe6 22.Qe6 Kd8 23.Qe7 Kc7 24.Qd6 Kd8 25.Qe7 Kc7 26.Qd6 Kd8 27.Qe7=) 20...Qd5–+ 21.Bc4?? (21.c4 Qc5 22.Bc2–+) 21...Qf5 22.d4 Nb6 23.Ba2 (23.Nd2 Qh3 24.Bd3 Qh4–+) 23...Nbd5 (better 23...a4 24.c4–+) 24.c4 (24.Bd5 Qd5 25.Qd3 a4–+) 24...Nf4 (better 24...Nh5 25.Qe5 Ng3 26.Qf5 Nf5 27.Kf1 Nb4–+) 25.Qe5 (25.Qf3–+) 25...Nh3 26.Kg2 (26.Kh1 Qf3 27.Kh2 Nf2 28.Kg1 N6g4 29.Qe6 fe6 30.Re6 Be6 31.Kf1 Qd1 32.Kg2 Qh1) 26...Nf4 (26...Qf2 27.Kh1 Qf3 28.Kh2 Ng4 29.Kh3 Ne5 30.Rg1 Rg3 31.Rg3 Qh1) 27.Kf1 0–1. yodamo – jamespond, ChessWorld.net, 2007. (=1.Nf3 h5 2.b4 a5)

2.Nf3= e5 3.Ne5 Bb4 4.e3 Rh6 5.a3 Ba5 (5...Be7 6.Bb2+=) 6.Nc4 Bb6 7.d4 g5 8.Nc3 d5 9.Nb6 ab6 10.Bd3 c5 (10...Nc6!?+=) 11.dc5+– bc5 12.Nd5! Nc6 (12...Qd5 Decoy to d5 13.Bb5 Discovered attack) 13.e4 Re6 14.0-0 g4 15.f3 (15.Bf4!? Ne5+–) 15...Ne5 16.Be2 Qh4?? (better is 16...gf3 17.Bf3 h4+–) 17.Nc7 Ke7 18.Qd5 Nf6 (18...gf3 19.Qc5 Kf6 20.Ne6 Be6+–) 19.Qc5 (19.Na8 Nd5 20.g3 Qh3 (worse is 20...Nf3 21.Bf3 Qf6 22.ed5+=) 21.ed5 gf3 22.Bg5 Kd6 23.Rf3 Nf3 24.Bf3 Rg6 25.Bf4 Kd7–/+) 19...Kd8 Plans Nfd7 20.Rd1 (better is 20.Ne6 Be6 21.Qe5 gf3+–) 20...Bd7 (20...Ned7 21.Ne6 fe6+–) 21.Ne6 fe6 22.Qe5 Ra6 23.Bg5 (23.Bg5 Qg5 24.Qg5+–) 1–0. Woelfelschneider,Peter – Lenhart, 2009.

2.Nf3 f6 3.e4 Nh6 4.d4 Nf7 5.c4 c6 6.Nc3 g5 7.Bb2 d6 8.Bd3 Na6 (9.a3 g4+/–). Hartur – juanpacio (1720), internet, 2006.

2.Nf3 h4 3.h3 Nc6 (3...d5 4.a3=) 4.b5+= Na5 5.Bb2 b6 6.e4 Bb7 7.d3 Nh6 8.Ng5 (8.Nh4!? c6 9.a4+/–) 8...e6+= 9.Qf3?? (better is 9.Nf3+=) 9...Qg5–+ 10.Be2 (10.d4 d5 11.e5 0-0-0–+) 10...Qc5 (better is 10...Qb5 11.Bc3 d5–+) 11.Na3 (11.c4–+) 11...Qg5 (better is 11...Qb4 12.c3 Qb2–+) 12.Bc1?? (12.Nb1 Qb5 13.Bc3 Bb4–+) 12...Qc5 13.Be3?? Qa3 14.Bc1 Qb4 15.Bd2 Qb2 16.0-0 Qc2 17.Bc1 Qc6 18.bc6+– Bc6 19.Bb2 Nb7 20.Rfc1 Nc5 21.d4 Na4? 22.d5 ed5 23.ed5 Bb7 24.Qe4 Kd8 25.Be5 d6 26.Bf4 Nc5 27.Qc4 Ba6 28.Qc2 g5?? 29.Be3 Bg7 30.Rab1 Be2 31.Qe2 Nf5 32.Bg5 f6 33.Bf4 Re8 34.Qg4 Nd3 35.Rc6 Nf4 36.Qf4 Ne7 37.Rc4 Nd5 38.Qf5 Re5 39.Qg6 Rg5 40.Qf7 Kc8 41.Qd5 Rd5–+ 42.Rbc1 Rc5 43.Rc5 dc5 44.Re1 Kb7 45.Re7 Bf8 46.Rd7 c4 47.Kf1 c3 48.Ke1 c2 49.Kd2 Bc5 50.Kc2 Bf2 51.a4 Rg8 52.Kd3 Rg2 53.Ke4 Rg3 54.Rf7 Rh3 55.Rf6 Bc5 56.Rf3 Rh1 57.Kd5 h3 58.Kc4 h2 59.Kb5 Rb1 60.Kc4 Rb4 (60...Rb4 61.Kd3 h1Q 62.Rf1 Qf1 63.Kc3 Qc4 64.Kd2 Rb2 65.Kd1 Qf1; 60...h1Q 61.a5 Rc1 62.Kd5 Qf3 63.Ke6 Re1 64.Kd7 Qd3) 0–1. Sowell,Anthony – Adams,Duane, internet Section, 2004. (=1.Nf3 h5 2.b4 h4)

2.g3 e5 3.a3 (3.Bb2 h4=) 3...d5 4.Bg2 (4.Bb2 Bd6+=) 4...Nf6 (4...h4 5.Nf3 e4 6.Nd4+=) 5.d3 (5.d4 ed4 6.Nf3 c5+=) 5...c6 (5...h4 6.Bg5 h3 7.Bf3+=) 6.Nf3= Bd6 (6...Nbd7 7.c4=) 7.Bb2 d4 (7...Qe7 8.c4=) 8.c3+= Bg4 9.cd4 (better is 9.Nbd2 dc3 10.Bc3=) 9...e4 (better is 9...Bf3!? 10.ef3 ed4=) 10.de4+/– Ne4 11.Qd3 Bf5? (better is 11...Qe7+/–) 12.Nh4+– Nf2 13.Qe3 (13.Qf5?! Nh1 14.Qe4 Kd7 15.Bh1 g6+–) 13...Qe7 14.Qf2 Bh7 15.Nc3 0-0 16.e4 f5 17.e5 Bc7 18.0-0 Nd7 19.b5 Bb6 20.bc6 bc6 21.Bc6 Rad8 22.Rae1 Ne5 23.Nd5 Qd6 24.Re5 Qe5 25.de5 Bf2 26.Rf2 g5 27.e6 gh4 28.Ne7 1–0. pierre – zeyaminswe, internet, 2012. (=1.g3 h5 2.b4)

2.g3 e6 3.a3 Qf6 (3...h4 4.Bh3=) 4.Nc3+= d5 (4...h4 5.d4+=) 5.Nf3 c6 (5...Bd6 6.d4+=) 6.d4 g6 (6...Qd8 7.Qd3+/–) 7.e4 Qd8 8.Bd3 a6 (8...Nd7 9.0-0+–) 9.0-0 a5 (9...Nd7 10.Bf4+–) 10.Bg5 Qb6 (10...Be7 11.Qd2+–) 11.b5 Bd7 (11...Be7 12.bc6 bc6 13.Rb1+–) 12.bc6 bc6 13.Rb1 Qa7 (13...Qc7+–) 14.ed5 ed5 15.Re1 Ne7 (15...Be7 16.Qe2 Bf5 17.Bf5 gf5 18.Nh4+–) 16.Na4 Na6 (16...Bc8 17.Qe2 Bg4 18.Nc5+–) 17.Ba6 Qa6 18.Nc5 Qc8 19.Nb7 a4 20.Nd6 Kd8 21.Nf7 (21.Nf7 Ke8 22.Nd6 Kd8 23.Nc8 Kc8 24.Be7+–) 1–0. pierre – Enael, internet, 2012. (=1.g3 h5 2.b4)

2.g3 f6 3.Nf3 e6 (3...e5 4.c3=) 4.a3 d5 5.Bb2 Ne7 6.Nc3 a6 (6...e5 7.Bg2=) 7.e4 Nbc6 (7...d4 8.Na2 e5 9.c3=) 8.ed5 ed5 9.Bg2 1–0. pierre (2090) – helmisflorin, Lasker simul special, 2012. (=1.g3 h5 2.b4)

2.h3 g6 3.e4 Bg7 4.c3 Nc6 5.Nf3 d6 6.a4 Be6 7.d4 d5 8.Qd3 de4 9.Qe4 Qd7 10.Bd3 Nf6 11.Qe3 0-0-0 12.Ne5 Ne5 13.Qe5 Rhg8 14.Bb5 c6 15.Bd3 Ng4 (better is 15...Nd5!? 16.Qe4 Nc3 17.Nc3 Bd4–+) 16.Qa5 Kb8?? (16...Bd4 17.cd4 Qd4–/+) 17.hg4+– Bg4 18.Bf4 Ka8 19.0-0 h4 20.b5 (better is 20.Bc7 h3 21.Bb6+– (21.Bd8 Rd8 22.b5 hg2+/–)) 20...h3?? (better is 20...Qd5 21.Re1 Bf5+–) 21.b6 a6 22.Ba6! ba6 (22...ba6 23.Qa6 Mate attack) 23.Qa6 Qa7 24.Qa7# 1–0. Petra Vreeswijk – pieeater, ChessWorld.net, 2011.

2.h4 a5 3.a4 (3.b5!?=) 3...ab4–/+ 4.c3 (4.Bb2 d6–/+) 4...bc3 5.Nc3 Rh6 (5...Nf6 6.Nf3–/+) 6.d4 Nc6 (better 6...Rc6 7.Bd2 Nf6=+) 7.Bh6+= Nh6 8.e4 e5 9.d5 (9.de5 Ng4+=) 9...Nd4= 10.Qh5?? (better 10.Be2=) 10...c6?? (better 10...Nc2 11.Kd2 Na1–+) 11.Qe5+– Be7 (11...Ne6 12.de6 de6 13.Rc1+–) 12.Qd4 cd5 (12...Bf6 13.e5 Qe7 14.Nf3+–) 13.Qg7 (better 13.Nd5 Kf8+–) 13...Bf8 (13...Bf6 14.Qg3 de4+–) 14.Qe5 Be7 (14...Qe7 15.Qe7 Ke7 16.Nd5 Kd8 17.Rc1+–) 15.Qh8 Bf8 16.Qe5 (16.Nd5 Qa5 17.Kd1 Ng4+–) 16...Qe7?? (16...Be7 17.Nd5 Kf8+–) 17.Qd5 (17.Qe7 Ke7 18.Nd5 Kd8+–) 17...Qb4 (17...Ng4 18.Nge2+–) 18.Qe5 Be7 (18...Kd8 19.Qf6 Be7 20.Qh8 (20.Qh6?! Qc3 21.Ke2 Qa1+–) 20...Bf8 21.Rb1+–) 19.Qh8 (19.Rb1 Qd6 20.Qd6 Bd6+–) 19...Bf8 20.Nge2 (better 20.Rb1 Qe7+–) 20...b5 (20...Ng4 21.h5+–) 21.Qe5 (21.Rb1 Qd6 22.Nb5 Qb6+–) 21...Kd8 (21...Qe7 22.Qe7 Ke7 23.Nb5+–) 22.Rd1 (better 22.Rb1 Qc4 23.Qg5 Ke8 24.Nb5 Bb4 25.Rb4 Qb4 26.Nec3 Ra4 27.Nc7 Kf8 28.Qh6 Kg8+–) 22...Ra4 (22...ba4 23.Rd4 Qe7 24.Qe7 Be7 25.Ra4 Ra4 26.Na4+–) 23.Rb1 Qa5 (23...Qd6 24.Qd6 Bd6 25.Na4 ba4+–) 24.Nd4 (better 24.Qf6 Ke8 25.Rb5 Ra1 26.Kd2 Ra2 27.Kd1 Ra1 28.Nc1 Rc1 29.Kc1 Qa3 30.Kc2+–) 24...Qc3–+ 25.Ke2 (25.Kd1 Rd4 26.Qd4 Qd4 27.Kc2 Qf2 28.Kb3 Qe3 29.Kc2 Qe4 30.Bd3 Qg2 31.Kb3–+) 25...Rd4 (25...Ra2 26.Rb2 Rb2 27.Nc2 Rc2 28.Kd1 Qd2) 26.Qf6 (26.Qg5 Be7 27.Qe3 Qc2 28.Kf3–+) 26...Kc7 (26...Be7 27.Qh8 Kc7 28.Qe5 Bd6 29.Qd4 Qd4 30.Rc1 Kb7 31.Rd1 Qe4 32.Kd2 Qf4 33.Ke2 Qe5 34.Kd3–+) 27.Qe5?? (27.Qf4 d6 28.Rc1 Re4 29.Qe4 Qc1 30.Qe3–+) 27...Bd6–+ 28.Rc1 (28.Qd4 Qd4 29.Rc1 Kb7 30.Rd1 Qe4 31.Kd2–+) 28...Qc1 (28...Rd2 29.Ke1 Qc1) 29.Qd4–+ Qc2 (better 29...Ng4!? 30.Kf3 Ne5 31.Ke2 Ba6–+) 30.Kf3=+ f5 (better 30...Bc5 31.Bd3 Bd4 32.Bc2 d6=+) 31.Qa7?? (better 31.Bd3 fe4 32.Be4= (worse 32.Qe4 Qc3 33.Ke2 Bb7–/+; 32.Ke4?? Qd2 33.Rc1 Qc1 34.Bb5 Qb1 35.Kf3 Bb7 36.Ke2 Qb5 37.Qd3 Qa4 38.Qc3 Kb8–+)) 31...Bb7 32.Bb5 (32.Qa5 Kc8 33.Qc3 Qc3 34.Ke2 Qc2 35.Ke3 Ng4 36.Kd4 Be5) 32...fe4 (32...Qe4) 33.Ke3 Bc5 (33...Nf5) 34.Qc5–+ Qc5 35.Kf4 Qb5 36.Rc1 Kd8 37.Kg3 e3! 38.fe3 Blocks the square `8 38...Nf5 (38...Qe5 39.Kf2 Qb2 40.Ke1 Qc1 41.Kf2 Qd2 42.Kg3 Qe3 43.Kh2 Ng4 44.Kh1 Qe1) 39.Kg4 Ne3 40.Kh3 (40.Kf4 Ng2 41.Kg4 Qb4 42.Kh5 Qh4 43.Kg6 Be4 44.Kg7 Qg5 45.Kf8 Qh6 46.Kf7 Bd5) 40...Bg2 (40...Qf5 41.Kg3 Qe5 42.Kf2 Ng4 43.Kf1 Ba6 44.Rc4 Bc4 45.Kg1 Qe1) 41.Kg3 (41.Kh2 Qe5 42.Kg1 Qg3 43.Rc8 Kc8 44.h5 Bd5) 41...Qe5 (41...Qf5 42.Rg1 Qf3 43.Kh2 Qf4) 42.Kf2–+ Qf4 43.Ke2 Bf3 44.Kd2 (44.Kd3 Qe4 45.Kc3 Qc4 46.Kb2 Qb4 47.Ka2 Bd5 48.Ka1 Qa3 49.Kb1 Qa2) 44...Nf5 (44...Nd1 45.Kc2 Qc4 46.Kb1 Qb3 47.Ka1 Qb2) 45.Kc2 Nh4 (45...Nd4 46.Kc3 Qe3 47.Kc4 Be2 48.Kd5 Nf3 49.Rc8 Kc8 50.h5 Qd4) 46.Rb1 Ng2 47.Ra1 Qc4 (47...Ne3 48.Kb2 Qb4 49.Kc1 Qc3 50.Kb1 Qc2) 48.Kb2 Ne3 49.Rc1 (49.Rd1 Nd1 50.Ka3 Qc3 51.Ka4 Bc6) 49...Qb4 50.Ka1 (50.Ka2 Bd5 51.Ka1 Qa3 52.Kb1 Qa2) 50...d5 (50...Qa3 51.Kb1 Be4 52.Rc2 Bc2) 51.Rb1 (51.Rc8 Kc8 52.Ka2 Nc4 53.Ka1 Qb2) 51...Qc3 (51...Qa3) 52.Ka2 Nc4 53.Rb8 Kc7 54.Rb3 Qb3! 55.Kb3 Bd1 56.Kc3 Ne5 (56...Kc6 57.Kd4 Be2 58.Kc3–+) 57.Kd4 (57.Kd4 Kd6 58.Kc3–+). MARYMARY – Anthony Harvel, ChessWorld.net, 2012.

2.h4 d5 3.d4 Nf6 4.Nc3 Nc6 5.e3 Bf5 6.a3 Qd7 7.Nf3 0-0-0 8.b5 Na5 9.a4 e6 10.Ne5 Qe7 11.Ba3 Qe8 12.Bf8 Rf8 13.Bd3 Bd3 14.Qd3 g6 15.Na2 Kb8 16.Qc3 b6 17.Nb4 Ne4 18.Qd3 Nc4 19.Nbc6 Ka8 20.Nd8 Qd8 21.Nc6 Qd7 22.0-0 f5 23.Ne5 Qd6 24.Nc4 Qe7 25.Ne5 Rg8 26.g3 Kb7 27.Qa3 Qe8 28.a5 g5 29.ab6 cb6 30.Qa6 Ka8 31.Qa7# 1–0. Daz101 – pieeater, ChessWorld.net, 2012.

2.h4 Rh6 3.Bb2 Rb6 4.Bc3 f5 5.a3 a5 6.Nh3 1–0. esko – bartman, net–chess.com, 2001.

2.a3 a5

3.Bb2 f6 (3...d5 4.e3=) 4.e3 ab4 5.ab4 Ra1 6.Ba1 e5 7.c4 (7.Bc3!?=) 7...Bb4=+ 8.Qa4 (8.Bc3 Nc6=+) 8...Nc6–/+ 9.c5 (better 9.Bc3!? Bc3 10.Nc3–/+) 9...Bc5 10.Bb5 Nge7 11.d4 ed4 12.ed4 Bb4 13.Nc3 (13.Nd2 h4–+) 13...Nd5 (better 13...Nd4 14.Nge2 Nb5 15.Qb4 Nc3 16.Qc3 d5–+) 14.Qa8?? (better 14.Nge2 Nd4 15.0-0 Ne2 16.Ne2–+) 14...Bc3 (14...Nd4!? 15.Bd3 Nc3 16.Kf1–+) 15.Bc3 Nc3 16.Bc6 Qe7 (better 16...dc6 17.Nf3 Qe7 18.Kd2 Ne4 19.Ke2 Ng3 20.Kd1 Qe2 21.Kc1 Kf7 22.hg3 Bf5–+) 17.Ne2 (17.Kf1 0-0 18.Bf3–+) 17…Qe2 0–1. pat_cash87 – Lord_Black208 (1740), lichess.org, 2020.

3.b5 h4 (3...Nf6 4.Bb2=) 4.h3 b6 5.c4 c5 (5...Nf6 6.d3=) 6.Bb2 a4 (6...Nf6 7.Nf3+=) 7.e3 g5?? (7...Bb7 8.Nc3+–) 8.d4 (better 8.Bh8 d5 9.cd5+–) 8...cd4 (8...Bg7 9.Nf3+–) 9.ed4 (9.Bd4 Rh6+–) 9...g4 (better 9...d5!?+–) 10.hg4 Nf6 (10...d5 11.Nc3 dc4 12.Bc4+–) 11.Bd3 (better 11.g5 Ne4 12.d5+–) 11...Ng4?? (11...d5 12.g5 dc4 13.Bc4+– (13.gf6?! cd3 14.Qd3 e6+=)) 12.Nd2 (better 12.Qg4 d5 13.Qf3 e6+–) 12...Nf2? (better 12...d5+–) 13.Kf2+– h3 (13...d5 14.Qf3+–) 14.gh3 (better 14.Qf3 d5 15.Nh3+–) 14...Rh3 (14...Bb7 15.d5 Rh6+–) 15.Rh3 f5 (15...d5 16.Rh7 e6 17.Qf3+–) 16.c5 (16.Qh5) 16...bc5 17.dc5 (17.Qh5) 17...Ra5 18.Rh8 (18.Qh5) 18...Rb5 19.Bg7 (19.Qh5) 19...Rb1 (19...e5 20.Qh5 Ke7 21.Qg5 Ke6 22.Rh6 Kf7 23.Qg6 Ke7 24.Qf6 Ke8 25.Qf8) 20.Bf5 (20.Rf8) 20...Rd1 (20...e6 21.Qh5 Ke7 22.Qg5 Kf7 23.Qg6 Ke7 24.Bf6) 21.Bg6 (21.Rf8) 1–0. pat_cash87 – Alumnosarap_2010, lichess.org, 2020.

2.a3 d5

3.Bb2 h4 4.h3 Qd6 5.Nf3=.

3.Nf3 Nf6 4.Bb2 h4 5.h3=.

2.a3 e5

3.Bb2 d6 4.e3 h4 5.d4=.

3.e4 Nf6 4.Bb2 Ne4 5.Qe2=.

2.a3 Nf6

3.c4 e5 4.Bb2 d6 5.Nf3=.

3.Nf3 d5 4.d3 h4 5.h3=.

2.Bb2 a5

3.b5 a4 4.a3 e6 5.c4 Nf6 (5...d5 6.e3+=) 6.e3 b6 (6...d6 7.Nc3+=) 7.Nc3 Bb7 8.Nf3 Be7 9.Be2 Rg8 (9...h4 10.h3+–) 10.0-0 g5 11.Nd4 g4 12.Na4 h4 13.f4 h3 14.g3 d6 15.d3 Nbd7 16.e4 Nc5 17.Nc5 dc5 18.Nb3 Nd7 (18...c6 19.a4+–) 19.a4 (19.Bg4 Bf6 20.Bf6 Qf6 21.Bh3 Rh8+–) 19...Bf6 20.Qd2 White prepares a5 (better 20.e5!? Be7+–) 20...Bb2 21.Qb2 Nf6 (better 21...c6+–) 22.a5 Qe7 (22...ba5 23.Nc5 Bc8 24.Nb3+–) 23.a6 Bc8 24.Qe5 (24.e5 Nd7+–) 24...Qd8 (24...Ra7 25.Qb2+–) 25.Rad1 (25.Qc3 c6+–) 25...Nd7 26.Qc3 Nf6 (26...c6 27.e5+–) 27.Qc2 (27.e5 Nd7+–) 27...Qe7 (27...e5 28.fe5 Nd7 29.d4+–) 28.d4 cd4 29.Rd4 (29.e5!? Nd7 30.Nd4 f5+–) 29...e5 30.Rdd1 ef4 31.Rf4 Nd7 (31...Be6 32.e5 Nd7 33.Qe4+–) 32.Rdf1 (better 32.Bg4!? c6+–) 32...Ne5 33.Nd4 (33.c5 Be6 34.cb6 cb6+–) 33...Be6 (33...Qc5 34.Rd1+–) 34.Nf5 (34.Ne6!? fe6 35.Qc3 Qd6+–) 34...Qc5 35.Kh1 0-0-0 (35...c6 36.Qd1+–) 36.Qc3 (36.Rd1 Rd1 37.Qd1 Rd8+–) 36...Kb8 37.Rd1?? (better 37.Ra1+–) 37...Rd1 (37...Bc4 38.Qc2 Rd1 A) 39.Bd1? Qb4 (39...Qb5?! 40.a7 Ka7 41.Ne3–+; 39...Bb5?! 40.Qc5 bc5 41.Kg1–/+) 40.Qf2 Rd8–+; B) 39.Qd1 Be2 40.Qe2–+) 38.Bd1 Rd8 The mate threat is Rxd1 39.Be2 (39.Bg4 Ng4 40.Qe1 Qc4 41.a7 Ka7–+) 39...Bc4 40.Bc4?? (better 40.Qb2 Be2 41.Qe2–+) 40…Rd1 (40...Rd1 41.Bf1 Qc3 42.Ne3 Qe3 43.a7 Ka8 44.Rf2 Qe2 45.Kg1 Rf1 46.Rf1 Qg2) 0–1. BeepBeepImAJeep (2645) – JSammour (2670), lichess.org, 2019.

3.b5 c6 4.a4 cb5 5.ab5 a4 6.c4 Qa5 (6...d5 7.cd5 Qa5 8.Nc3+–) 7.Bc3 (better 7.Nc3!? Qd8 8.Nf3+–) 7...Qa7+– 8.e3 e6 9.Nf3 a3 (9...Nf6 10.Bd3+–) 10.Qb3 (10.Bb2 Qa4+–) 10...Qc5 (10...a2 11.Be5 Qa4 12.Qa4 ab1Q 13.Rb1 Ra4 14.Bb8+–) 11.d4+– Qa7 (11...Qe7 12.c5 b6 13.Bb4+–) 12.c5 (12.Na3 Qa4 13.Qa4 Ra4+–) 12...a2 13.Nbd2 (13.b6!? Qa4 14.Qb2 Nc6+–) 13...b6 (13...d5 14.cd6! Nf6 15.e4+–) 14.cb6 Qa3 (14...Qb6 15.Ra2 Ra2 16.Qa2+–) 15.Qa3 (15.Bc4 Qb3 16.Bb3 d5+–) 15...Ra3 (15...Ba3?? 16.Ra2 Bb7 17.Nb1+–) 16.Bb2 Ra8 17.Bc4 d5 18.Ba2 Nd7 19.0-0 (19.Bb1 Ra1 20.Ba1 Nb6+–) 19...Nb6 (19...Ra5 20.Rfc1 Ne7 21.b7 Bb7 22.Bb3 Ra1 23.Ba1+–) 20.Bb3+– Ra1 21.Ra1 Bb7 (21...h4 22.Ba3+–) 22.Ne5 (better 22.Ra7 Bc8 23.Ne5+–) 22...Bb4? (22...Be7 23.Ra7 Bc8 24.Bc3+–) 23.Ndf3 (better 23.Ra7!? Bc8 24.Nf7 Rh7+–) 23...Nf6? (23...Ne7+–) 24.Ra7 Bc8 25.Ng5 (25.Rf7 Rg8+–) 25...Be7 (25...Nfd7+–) 26.Ngf7 Rf8 (26...Rg8 27.Bc2 g5 28.Bg6 Rg6 29.Ng6 Kf7 30.Ne7+– (30.Re7?! Kg6 31.Ba3 Bd7=+)) 27.Ng5 (better 27.Re7 Ke7 28.Ba3 Ke8 29.Nd6 Kd8 30.Nc8+–) 27...Ng4 28.Ngf3 Ne5 29.Ne5 Bd6 30.Ng6 (better 30.Bd1!? Rh8+–) 30...Rf6 (30...Rf7 31.Rf7 Kf7 32.Ne5 Ke7 33.Bd1+–) 31.Rg7 Rf7 (31...Bd7 32.Ne5 Bb5 33.Rb7+–) 32.Rf7 (32.Rg8 Kd7 33.Rh8 Kc7 34.Rh5 Bd7+–) 32...Kf7 33.Ne5 Be5 (33...Ke7 34.Bd1 h4 35.Be2+–) 34.de5 Bd7 (34...Nc4 35.Bd4+–) 35.Bd4 1–0. AhmedSultanov (1675) – esereseres (1685), lichess.org, 2019.

3.b5 c6 4.a4 cb5 5.ab5 b6 6.e3 (6.e4 Nf6 7.e5 Ne4+=) 6...Bb7 (6...d5 7.Be2+=) 7.Nf3 f6 (7...Nf6 8.Be2+=) 8.Be2 (better 8.d4+–) 8...g5?? (8...g6 9.Nh4 Kf7 10.Bd3+–) 9.h3 (better 9.Ng5 Bg7 10.Bh5 Kf8 11.Nf7+–) 9...Bg7 (9...e5 10.d4 d6 11.Nbd2+–) 10.0-0 (better 10.Ng5 Qc8 11.Ra4 (11.Bh5?! Kf8+–) 11...fg5 12.Bg7 Bg2 13.Bh8 Bh1 14.Bh5 Kd8 15.Bf3 Bf3 16.Qf3+–) 10...g4+= 11.hg4 (11.Nh4 Qc7+=) 11...hg4 12.Ng5?? (12.Nh2 g3 13.Bh5 Kf8 14.fg3 Qc7+=) 12...fg5?? (better 12...e5 13.f4 fg5 14.fe5 Qe7–+) 13.Bg7+– Rh7 (better 13...Rh4+–) 14.Bb2?? (better 14.Be5+–) 14...Qc7–+ 15.g3 (15.f4 gf3! 16.Bf3 Qh2 17.Kf2 Bf3 18.Qf3–+) 15...Nc6 (15...Rh1) 16.Bg4 (16.Bd3 Rh3 17.Bg6 Kf8+=) 16...Ne5 17.Bh5 Rh5?? (better 17...Kd8 18.f4 Nc4=) 18.Qh5+– Kd8? (18...Nf7 19.Qg6 Ngh6+–) 19.f4 Nf3 20.Rf3 Bf3 (20...Qc2 21.Bd4 Qd1 22.Kf2 Qf3 23.Qf3 Bf3 24.Bb6 Ke8 25.Kf3+–) 21.Qf3 Nf6 (21...Rc8 22.Qd5 Nf6 23.Qg5 Qd6+–) 22.Qa8 Qc8 1–0. DEFFM – GuestMPTX, freechess.org, 2016.

3.b5 c6 4.a4 cb5 5.ab5 Qb6 6.e3 d6 7.Be2 (7.Na3 Nd7+=) 7...Bd7 (7...e5 8.Nf3+=) 8.c4 (8.Bd4 Qd8+–) 8...Qc5 (8...Nf6 9.Nf3+–) 9.Bd4 Qg5 (9...Qc7 10.Nc3 Be6 11.b6+–) 10.Nf3 (10.Bf3 Bg4+–) 10...Qg2 11.Rg1 Qh3 12.Nc3 Qe6?? (12...Nf6 13.Na4 Be6+–) 13.Nd5+– (13.Bg7 Bg7 14.Nd5 Qd5 15.cd5 Ba1 16.Qa1 Nf6+–) 13...Kd8 (13...Qh3 14.Nc7 Kd8 15.Bb6+–) 14.Bb6 Kc8 15.Nc7 (15.Ra5?! Ra5 16.Ba5 h4+–) 15...Qf6 16.Na8 Nh6 (16...Bg4 17.Ba5 Qf5 18.Nb6 Kd8 19.Nd5 Kc8 20.Nd4 Be2 21.Qe2+–) 17.Ba5 b6 (17...Qf5 18.Nb6 Kc7 19.Rg7 Ng4+–) 18.Nb6 Kb7 19.Bc3 e5 20.Qa4 Kb6 (20...Kc7 21.Qa7 Kd8 22.Qb8 Ke7 23.Nd5 Ke6 24.Nc7 Ke7 25.Ra8 Bc8 26.Qc8 Qf3 27.Qd8) 21.Qa7 1–0. guest691 – anniejoycejohny, chessclub.com, 2018.

3.b5 Rh7 4.e3 (4.e4 h4+=) 4...g6 (4...d5 5.Bd3 g6 6.Nf3+=) 5.Nf3 Bg7 (5...Nf6 6.Be2+=) 6.d4 (6.Bg7 Rg7 7.d4 Nf6+–) 6...c5 (6...d5 7.c4+=) 7.Ng5 (7.Bc3 cd4 8.Bd4 d6+=) 7...Rh8 8.Qf3 (8.Nc3 a4+=) 8...Nh6 9.Bd3 (better 9.c3+=) 9...Qb6?? (better 9...d5=) 10.dc5+– Qc5 (10...Bb2 11.cb6 d5+–) 11.Bg7 Qb5 (11...Qg5 12.Bh8 d6+–) 12.Bb5 Rg8 13.Bh6 Kd8 14.Qf7 Kc7 15.Qg8 b6 16.Nc3 Nc6 17.0-0-0 (17.Nd5 Kb7 18.Bc6 dc6 19.Nb6 Bf5 20.Qa8 Kb6 21.Rb1 Kc5 22.Qa5 Kc4 23.Rb4 Kc3 24.Qc5) 17...Ba6 18.Qa8 (18.Rd7 Kd7 19.Rd1 Kc7 20.Ne6 Kb7 21.Rd7) 18...Bb5 (18...Bc8 19.Nf7 Nb4 20.Qa7 Bb7 21.Rd7 Kc8 22.Qb7) 19.Nb5 1–0. guest691 – anniejoycejohny, chessclub.com, 2018.

2.Bb2 a6

3.a3 b5 4.e3 Bb7 5.Nf3 Nf6 6.Be2 d6 7.0-0 Nbd7 8.Nd4 Nd5 9.Bh5 (9.Ne6 Qb8 10.Nf8 Kf8 11.Bh5 e5+/–) 9...Ne5?? (better is 9...e5 10.Qg4 ed4 11.Qe6 Qe7 12.Bf7 Kd8 13.Bd4 c5 14.bc5 Qh4–/+ (14...Nc5?! 15.Qe7 Ke7 16.Bd5 Bd5 17.Nc3+=)) 10.f4+/– Ng6 11.Bf3 Qd7 12.Nc3 Nc3 13.Bc3 Bf3 14.Nf3 Rd8 15.d4 Qg4 16.Ng5 Qd1 17.Rad1 f6? 18.Ne6+– Rd7 19.f5 Nh4 20.e4 g6 21.d5 gf5 22.ef5 Bh6 23.g3 Be3 24.Kh1 Nf5 25.Rf5 Kf7 26.Re1 Bb6 27.Bd4 Bd4 28.Nd4 Kg6 29.g4 Rh3 30.Kg2 Ra3 31.Ne6 Ra2 32.Re2 a5 (32...a5 33.Nf8 Kf7 34.Nd7 ab4+–). cogit – jpedrolex, kurnik, 2012.

3.a3 h4 4.e3 b5 5.h3 Bb7 6.a4 Nf6 (6...Nc6 7.ab5 ab5 8.Ra8 Qa8 9.Nc3=) 7.ab5+= ab5 8.Ra8 Ba8 9.Nf3 e6 10.Ba3 (10.Bb5 Bb4 11.0-0 Kf8+=) 10...Nc6 (10...Bf3 11.Qf3 c6 12.Be2=) 11.c3 (11.Bb5 Nb4 12.Be2 Bf3 13.Bf3 d5+=) 11...Qb8= 12.Bb2 Be7 (12...e5 13.Na3=) 13.Na3+= Na7 14.Nd4 Can b5 get defended? (14.Be2 Bf3 15.Bf3 0-0+=) 14...c6 (14...c5 15.bc5 Bc5 16.Nf3=) 15.Rg1 (15.Nf3!?=) 15...e5 16.Nf3 (16.Nf5 Bf8 17.g3 hg3 18.Ng3 d5=+) 16...e4 17.Nd4 Qh2 18.Ne2 Nc8 19.Nc2 (19.Qa1 Qb8=+) 19...Nd6 20.d3 (20.Na3=+) 20...Nf5 (20...ed3 21.Qd3 Nc4 22.Ba1–/+) 21.Ncd4 (21.de4 Ne4 22.Ncd4 Qe5=+) 21...Nd4=+ 22.ed4 0-0 23.Bc1 (better 23.g3=+) 23...d5?? (better 23...Nd5 24.Qc2 ed3 25.Qd3 Re8–/+) 24.Bf4+– Qf4 (24...Qg1 25.Ng1 Re8 26.Bg5 ed3 27.Bf6 Bf6 28.Kd2+–) 25.Nf4 Bd6 (25...ed3 26.Bd3 Re8+–) 26.Be2 (better 26.Nh5 Be7 27.g3+–) 26...Bf4 27.g3 hg3 28.fg3 Be3 29.Rf1 Re8 (29...Bb7 30.h4+–) 30.Rf5 Bb7 31.Kf1 (better 31.Re5 Ra8 32.Bg4+–) 31...Bc8+– 32.g4 (32.Re5!? Bh3 33.Ke1+–) 32...Bf5+= 33.gf5 ed3 (33...Ra8 34.Qb1+=) 34.Qd3 (34.Bd3 Bg5 35.Kf2=) 34...Bg5 (better 34...Bf4!? 35.Qf3 Bd2=) 35.Qg3+– Ne4 (35...Bd2 36.Qc7+–) 36.Qc7 Nc3 (36...Re7!? 37.Qc8 Kh7+–) 37.Qc6+– Re3 (37...Re2 38.Qc3 Rd2 39.Qc5+–) 38.Bb5 (38.Bh5 Bh4+–) 38...Rh3 (better 38...Kh7+–) 39.Qe8 Kh7 40.Qf7 Ne4 (40...Bf6 41.Bd7 Bd4+–) 41.Qd5?? (better 41.Bc6 Rf3 42.Kg2 Rf2 43.Kg1+–) 41...Rf3= 42.Kg2 Rg3 43.Kh2 Bf4?? (better 43...Rg4 44.Qa2 Bf4 45.Kh1 Bd2=) 44.Qe4+– Rg4 (44...Bc7 45.Qh4 Kg8 46.Bc4 Kf8 47.Kh1+–) 45.Kh3 Rg3 46.Kh4 g5 47.fg6! (47.fg6 Rg6 48.Kh5 Bd6 49.Qg6 Kh8 50.Qh6 Kg8 51.Bc4) 1–0. FeegLood (2640) – Sadistika (2435), lichess.org, time forfeit, 2015.

3.a3 h4 4.e3 b5 5.h3+= Bb7 6.Nf3 Nf6 7.Be2 e6 8.0-0 c5 9.c4 (9.a4 ba4 10.bc5 Bc5+=) 9...cb4= 10.cb5 ba3 (10...ab5 11.Bb5 ba3 12.Na3+=) 11.Na3 ab5 (11...Be7 12.Qb3+=) 12.Nb5+– Nc6 (better 12...Ra1 13.Qa1 Bf3 14.Bf3 d5+–) 13.Ra7?? (better 13.Ra8 Ba8 14.Qa4+–) 13...Ra7 (better 13...Na7 14.Nbd4 Nc6–+) 14.Na7 Na7 15.Qa1 (15.Qa4 Nc6–+) 15...Nc6 16.Rb1 Be7 17.Bf6 (17.Bc3 Qc7–+) 17...Bf6 18.Qa4 (18.d4 Ba8–+) 18...Qc7 19.Qb3 (19.Qb5 Nd8–+) 19...Bc8 (19...Nd8 20.d4–+) 20.d4 (20.Rc1 0-0–+) 20...0-0 21.Rc1 (21.Bd3 d5–+) 21...Qb8 (better 21...Nd4!? 22.Rc7 Nb3 23.Bc4–+) 22.Qd1 (22.Qb8 Nb8 23.Rb1 Nc6–+) 22...Ne7 (22...Bb7 23.Rb1–+) 23.Bd3 (23.Nh2 Nd5–+) 23...Bb7 24.Nh4 (24.Rb1 Qa8 25.Ne1–+) 24...Bh4 25.Qh5 Ng6! 26.Bg6 (26.Rb1 Qa8 27.Qg4–+) 26...fg6 (better 26...Bf2 27.Kh1 fg6–+) 27.Qh4–/+ Ba8 (27...Bd5 28.f3–/+) 28.Qg5 (28.f3 Qb5–/+) 28...Rf6 (28...Qb2 29.Rf1–+) 29.Qe5 (29.f3 Bc6–/+) 29...Qe5 (29...d6 30.Qg3–+) 30.de5 Rf8 31.Rd1 (31.f3 Bc6–/+) 31...Bc6 32.f3 (32.Rc1 Kf7–/+) 32...Kf7 (32...Rb8 33.Rc1–+) 33.Rd2 (33.Ra1 Rb8 34.Ra5 Rb2–+) 33...Rb8 34.e4 (34.Kf2 Rb5–+) 34...Rb5 35.Kf2 Re5 36.Ke3 (36.Rc2 Rb5–+) 36...Rb5 37.Kf4 (37.Rc2 e5–+) 37...Rb3 (37...Kf6 38.Rc2–+) 38.Rf2 (38.Rc2 Rb6–+) 38...Kf6 (38...d5 39.Rc2 Rb6 40.e5–+) 39.h4 (39.e5 Ke7–+) 39...g5! 40.Kg4 (40.hg5 Kg6 Decoy) 40...gh4 41.Kh4 Kg6 (41...d5 42.ed5 ed5 43.Rd2–+) 42.Kg4 (42.Rc2 Rb4–+) 42...e5 (better 42...Rb4–+) 43.Rb2 (43.Rd2–+) 43...d6 (better 43...Rb2 44.Kh4 Rg2–+) 44.Rb3+– Bd7 (44...Kf6 45.g3+–) 45.Kg3 (45.Kh4 Kf6+–) 45...Be6 (45...Kf6 46.Rb6 Ke6 47.f4+–) 46.Rc3 (better 46.Rb6+–) 46...Bb3?? (46...Kf6+–) 47.Rc6 (better 47.Rb3 Kf7 48.Kg4+–) 47...Kf6 48.Rd6 Ke7 (48...Kg5 49.Kf2+–) 49.Rd3 (49.Rb6!? Be6+–) 49...Be6 50.Re3 (50.f4 ef4 51.Kf4 Kf6+–) 50...Kf6 51.f4 (better 51.Ra3 Bc4+–) 51...g5 (51...ef4 52.Kf4 g5 53.Kf3+–) 52.fe5 (better 52.f5!? Bc4+–) 52...Ke5 53.Kf2 (53.Re2 Bc4 54.Rb2 Bd3+–) 53...g4 54.g3 (better 54.Kg3!?+–) 54...Kd4? (better 54...Bd7+–) 55.Re1 1–0. FeegLood (2765) – AvatarOfBigotry (2400), lichess.org, time forfeit, 2016.

3.a4 h4 4.b5 (4.e4 Nf6 5.e5 Nd5=) 4...b6 (4...Nf6 5.Nf3=) 5.h3 ab5 (5...Bb7 6.Nf3=) 6.ab5+= Ra1 7.Ba1 Bb7 8.c4 Nf6 9.e3 e6 (9...c6 10.Nf3+=) 10.Nf3 d6 (10...Bb4 11.Be2+=) 11.Be2+= Nbd7 12.0-0 Nc5 (12...Be7 13.Bf6 Bf6 14.d4=) 13.d4 (13.Nc3 Be7+–) 13...Nce4 14.Nbd2 Be7 15.Ne4 Ne4 16.Nd2 f5 (better 16...Nd2!? 17.Qd2 Qa8+–) 17.Ne4+– Be4 (17...fe4 18.Bh5 Kf8 19.Qg4+–) 18.Bh5 (better 18.d5!? Bg5 19.Kh1+–) 18...Kf8+– 19.Bf3 (19.d5 ed5 20.f3 Bd3 21.Qd3 Rh5 22.cd5 Rg5+–) 19...Qa8 (19...Bf3 20.Qf3 d5+–) 20.Bb2 (20.d5 Bf3 21.Qf3 Rh6+–) 20...g5? (20...Bf3!? 21.gf3 d5=) 21.Be4 (better 21.d5!? Bf3 22.Qf3+– (22.gf3?! Rh6+–)) 21...Qe4+= 22.Qd2 Kf7 Black intends f4 (22...g4 23.f3 gf3 24.gf3 Rg8 25.Kh2+=) 23.f3 Qb7 24.e4 White plans d5 24...f4 25.d5 e5 26.Ra1 Ra8 27.Qd1 Ra7 28.Ra4 Qa8 29.Ra7 Qa7 30.Qb3 Kg6 31.Bc3 Kf7 32.Kf2 Kg6 33.Ke2 Kf7 34.Kd2 Ke8 35.Kc2 Kd7 36.Kb2 (36.Kd3 Kc8+=) 36...Kc8= 37.Bb4 Kb7 38.Qc3 (38.Qa2 Qa2 39.Ka2 Kc8+=) 38...Kb8 (38...Qa4 39.Qb3 Qa7 40.Qa3=) 39.Kb3 (39.Qa3 Qa3 40.Ba3 Kc8+=) 39...Kb7 (39...Bf8 40.Qb2+=) 40.Qc2 (40.Qc1 Kc8+=) 40...Kb8 (40...Qa1!?=+) 41.Bc3 Kb7 42.Qd2 Kb8 43.Qe1 Kb7 44.Qf1 Kb8 45.g3?? (45.Qa1 Qb7+=) 45...Kb7?? (better 45...hg3 46.Qg2 Qa8–+) 46.gh4 gh4 47.Qg2 Qb8 48.Qg7 Qf8 (48...Qd8 49.Kc2=) 49.Qh7 (49.Qf8 Bf8 50.Bb4 Be7+=) 49...Qf6 (49...Bf6 50.Qf5=) 50.Qh5 (50.Qf5 Qg7=) 50...Qg5 (50...Qf8 51.Qg4=) 51.Qe8 (51.Qg5 Bg5 52.Be1 Kc8+=) 51...Bd8 52.Qc6 Kb8 (52...Kc8 53.Qa8 Kd7 54.Qc6 Ke7 55.Be1=) 53.Qd7 Bf6 54.Qg4 Bd8 (54...Qg4 55.fg4 (55.hg4?? h3–+) 55...Bg5 56.Kc2+=) 55.Be1 The isolani on h4 becomes a target 55...Qg4 56.fg4 (56.hg4?? h3 57.g5 Bg5–+) 56...Bg5 57.Kc2 f3? (better 57...Kc8+=) 58.Kd3 Bf4 (58...Kc8 59.Bf2+–) 59.Bf2 (59.Bh4 Kc8+–) 59...Bg3?! (59...Kc8+–) 60.Ke3 Bf4 61.Kf3 c6 (61...Bg5+–) 62.dc6 Kc7 (62...Bg5 63.Bb6 Bf6 64.Be3+–) 63.Bh4 (63.Be3 Bg5 64.Bg5 Kc8 65.Be7 Kb8 66.Bd6 Ka8 67.g5 Ka7 68.g6 Ka8 69.g7 Ka7 70.c7 Kb7 71.g8Q Ka7 72.Qb8) 63...d5 (63...Bh6 64.Bf6 Bd2 65.g5+–) 64.ed5 Kd6 (64...Bd2 65.Be7 Kb8 66.Ke4 Kc8 67.d6 Be3 68.d7 Kb8 69.d8Q Ka7 70.Qd7 Kb8 71.Qb7) 65.Bg3 Kc5 66.Bf4 ef4 67.Kf4 Kc4 68.c7 Kb5 69.c8Q Ka5 70.d6 b5 71.d7 Kb4 72.d8Q Ka3 (72...Kb3 73.Qd3 Kb4 74.Qcc3 Ka4 75.Qdc2) 73.Qd3 Ka4 (73...Kb4 74.Qcc3 Ka4 75.Qdc2) 74.Qa6 Kb4 75.Qab5 1–0. BeepBeepImAJeep (2520) – Sadistika (2320), lichess.org, 2015.

3.c4 b6 4.Nf3 Bb7 5.e3 e6 6.a3 c5 7.bc5 Bc5 8.Bg7+/– Rh7 9.Bc3 b5 10.cb5+– ab5 11.Bb5 Nf6 12.d4 Bd6 13.0-0 Ne4 14.Bb2 Qb6 15.a4 h4 16.Na3 Bc6 17.Nc4 Qb7 18.Nd6 Nd6 19.Bc6 Nc6 20.d5 Ne7 21.Qc2 Rh5 22.de6 Rha5? 23.ef7 Nf7 24.Nh4 1–0. Wall,Bill – Delmundo Sammy, internet, 2005.

3.c4 Nf6 4.Nf3=.

3.e3 g5 4.a4 f5?? (better 4...Nf6=) 5.Bh8+– Bg7 (5...g4+–) 6.Qh5 (6.Bg7 g4+–) 6...Kf8 7.Bg7 Kg7 8.Qg5 Kh8 (8...Kf8 9.Qf5 Nf6 10.Nf3+–) 9.Bc4 (9.Qf5 Nc6+–) 9...Nf6 (9...d5 10.Qh4 Kg7 11.Ba2+–) 10.Qh6 (10.Nf3!? Nh7 11.Qf5 Nc6+–) 10...Nh7 11.Nf3 Qf8 (11...e6 12.c3+–) 12.Qh5 Qf6 13.Nh4 (better 13.h4 Nc6 14.c3+–) 13...Qa1 (13...Nc6+–) 14.Qe8 Kg7 (14...Nf8 15.Qf8 Kh7 16.Qg8 Kh6 17.Qg6) 15.Qg6 Kf8 (15...Kh8 16.Qg8) 16.Qg8 1–0. BeepBeepImAJeep (2630) – SickBrain, lichess.org, 2016.

3.e3 h4 4.h3 (4.a3 Nf6=) 4...b5 (4...e5!?=) 5.a4 Bb7 (5...ba4 6.Ra4 e6 7.Nf3+=) 6.ab5+– ab5 7.Ra8 Ba8 8.Nf3 c6 9.Nc3 (9.Be2 d6+–) 9...Nf6+= 10.Ne2 (10.Bd3 Na6+=) 10...e6= 11.Qa1 Bb7 12.Qa7 Qc8 (12...Qc7 13.Be5 d6 14.Bf6 gf6 15.Ned4+=) 13.Be5 (13.Bf6 gf6 14.Qd4 Na6+=) 13...d6 (13...Na6 14.c3=) 14.Bb2 (14.Bf6 gf6 15.Qd4 e5=) 14...Nbd7 (14...e5 15.Qa3=) 15.Nf4 (15.Nc3 Qa8 16.Qa5 Be7=) 15...d5 (15...Be7 16.Ne2=+) 16.Nd3= Bd6 (16...Qa8 17.Qa5=) 17.Be2 (17.Qa1=) 17...0-0 (17...Qa8!? 18.Qa8 Ba8+=) 18.Nh4 (18.Qd4 Re8 19.Nfe5 c5 20.bc5 Nc5 21.Nc5 Qc5 22.Qc5 Bc5 23.Bb5 Rb8+=) 18...Qc7+= 19.Qa1 (19.Nf3 Ra8 20.Qd4 Ra4=) 19...e5 (19...Ra8 20.Qb1+=) 20.Nf5 Re8 (20...Ra8 21.Qb1+=) 21.Nd6+– Qd6 22.f4 (22.Qa7 Qc7 23.Qa5 Qd6+=) 22...ef4 23.Nf4 (23.Qa7 Bc8 24.ef4=) 23...Ne5 (better 23...Qb4!? 24.Bc3 Qe7=) 24.0-0+– Nfd7 (better 24...Ne4 25.Qe1 Nc4 26.Bc4 bc4+–) 25.Nh5 (25.Qa7 Bc8 26.Qd4 f6+–) 25...f6? (25...Qb4 26.Bc3 Qe4 27.Qd1+=) 26.Ng3 (26.Qa7 Bc8 27.Qd4 Ng6+–) 26...Nb6? (better 26...Qb4!? 27.Bc3 Qa4+=) 27.Bd4 Nbc4 28.Qc3 Ng4 (28...Qe6 29.Nf5+–) 29.Bg4 (29.Rf4 Nge5+–) 29...Qg3 30.Bf3 (30.Qd3 Ne5 31.Be5 Re5+–) 30...Bc8 (30...Ra8!? 31.Qd3 Bc8+–) 31.d3+– Nd6? (31...Ne5 32.Be5 Qe5 33.Qc6 Qe3 34.Kh1+–) 32.Qe1 (better 32.Qc6 Bb7 33.Qd7+–) 32...Qe1 (32...Qg6 33.g4+–) 33.Re1 Nf5 (33...Kf7 34.Ra1+–) 34.Kf2 (34.Bc5 Nh4 35.Be2 Ng6+–) 34...Nd6 (34...Nd4 35.ed4 Re1 36.Ke1+–) 35.Bc5 (35.Ra1 Kf7+–) 35...Nb7 36.Ra1 (36.Bb6 Nd6+–) 36...Nc5+– 37.bc5 Bd7 (37...Kf8 38.Ra7 Bf5 39.g4+–) 38.d4 (38.Ra7 Rd8+–) 38...Re7 39.Ra7 Kf7 40.Bh5 (40.e4 de4 41.Be4 Re4 42.Rd7 Kg6+–) 40...g6 41.Bg4 Be8 (41...Bg4 42.Re7 Ke7 43.hg4+–) 42.Re7+– Ke7 43.Bf3 f5 44.g4 Bd7 45.gf5 (45.g5 Be8+–) 45...Bf5 46.c3 Kf6 (46...g5 47.Kg3+–) 47.Kg3 (47.Bg4 Ke6+–) 47...Bd3+– 48.h4 Bc4? (better 48...g5+–) 49.Kf4 Bd3 50.e4 de4 (50...Bc4 51.ed5 cd5 52.Bg4+–) 51.Be4 Bc4 52.Bc6 b4 (52...Be2+–) 53.cb4 Ke7 54.b5 Kd8 55.b6 Kc8 56.Be4 Kd8 57.Bg6 Bd3 58.Bf5 (58.Bd3 Ke7 59.b7 Kf7 60.b8Q Kg7 61.Qc7 Kf6 62.c6 Ke6 63.Bc4 Kf6 64.Qf7) 58...Bc4 59.b7 (better 59.h5 Bd5 60.h6+–) 59...Bb5 (59...Kc7 60.c6! Bf7+–) 60.c6! Ba6 (60...Bc6 61.b8Q Combination) 61.b8Q Ke7 62.Qe5 (62.Qe5 Kf7 63.Be6 Ke7 64.Bc4 Kd8 65.Qd6 Ke8 66.Qe6 Kd8 67.Qd7) 1–0. FeegLood (2685) – fickle05 (2385), lichess.org, time forfeit, 2015.

3.e3 h4 4.h3 (4.a3 d5=) 4...b5 (4...e5!?=) 5.Nf3+= Bb7 6.a4 (6.a3 Nf6+=) 6...e6 (6...Nc6 7.ab5 ab5 8.Bb5 Ra1 9.Ba1 Nb4 10.Be2+=) 7.ab5+– Bb4 (7...Nf6 8.c3+–) 8.Bg7 Rh7 9.Bb2 ab5 (9...Qe7 10.Nc3+–) 10.Ra8+– Ba8 11.Bb5 Nf6 12.Bd3 Rg7 (12...Ne4 13.0-0+–) 13.Nh4 Rg8 (13...d6 14.c3 Bc5 15.Bb5 Nbd7 16.d4+–) 14.Rg1 (14.Bf1 d6+–) 14...Ne4 (14...Rh8 15.Nf3+–) 15.Nf3 f5 (15...Bd5 16.c3 Be7 17.c4+–) 16.Nc3 (16.g4 Bd5+–) 16...Nc3 (16...Bc3 17.dc3 Nc6 18.Nd2+–) 17.dc3 Bd6 18.c4 (18.g4 Bf3 19.Qf3 Nc6+–) 18...Nc6 19.c5! Bc5 20.Nd4 (20.Bc3 Qe7+–) 20...Qb8 (20...Qh4 21.Bf1+=) 21.Qh5 Kd8 (21...Kf8 22.Nb3+–) 22.Nb3 (22.Nc6 Bc6 23.Bf6 Be7+–) 22...Bb4 (22...Be7 23.Qh7 Re8 24.Qg7+–) 23.Ke2 Ne7 (23...Be7 24.g4 Qb4 25.Qh7+–) 24.Qf7+– Re8 25.Bf6 Bd6 (better 25...Bd5+–) 26.Ra1 (26.g4 Be4 27.gf5 Bd3 28.cd3 c5+–) 26...Bd5? (26...Bg2 27.h4 Qb4 28.Rg1 Qg4 29.Ke1+–) 27.Rb1 (27.Bf5!? Bc4 28.Kd1 ef5 29.Qc4 Rf8+–) 27...Qa8 (27...Bg2 28.h4 Qa8 29.Nd2+–) 28.f3 (28.g3 e5 29.Be7 Be7 30.Qf5 e4+–) 28...c5 (28...e5 29.Be7 Be7 30.Qf5+–) 29.Nd2 (29.c4 Bc6+–) 29...Kc7 (29...e5 30.Qh7 f4 31.Ne4 Be4 32.Be4 Qa6 33.Bd3+–) 30.Bc3 (30.Ra1 Qc8 31.g4 Rf8+–) 30...Nc6 (30...Kd8 31.Kd1+–) 31.Qh5 (31.Ra1 Re7 32.Qg6 Qf8+–) 31...Rg8 (31...Be5 32.Be5 Ne5 33.e4+–) 32.Kf1 (32.g4 Be5 33.Be5 Ne5+–) 32...Nb4 (32...Qf8 33.e4 fe4 34.Be4+–) 33.Bb4 (better 33.Qh7!?+–) 33...cb4+= 34.Qh4 Qa2 (34...Rh8 35.Qf6+–) 35.Qd4 (35.Qh7 Rf8+–) 35...Ra8 (35...e5 36.Qh4+–) 36.Ke2 (36.e4 fe4 37.fe4+–) 36...Ra3? (36...Rg8 37.g4 fg4 38.fg4+–) 37.Rb4 (better 37.e4!? Bc6 38.Nc4 (38.ef5?! e5 39.Qc4 Be7+–) 38...Rd3 39.Kd3 (39.Qd3?! Qb1 40.Qd6 Kc8+–) 39...fe4 40.fe4+–) 37...Bb4+– 38.Qb4 Ra4 39.Qc5 Bc6 40.Qe5 Kb7 41.Qg7 (41.Nb3 Ra3 42.Nc5 Kc8 43.Qh8 Kc7+–) 41...Ra5 (41...Qa1 42.Qg3+–) 42.Qc3 (42.Nc4 Ra4 43.Nd6 Kc7+–) 42...Ra3 (42...Bb5 43.g3+–) 43.Qb4+– Kc7 44.Nc4 Ra4?? (better 44...Ra6+–) 45.Qb6 Kc8 46.Nd6 1–0. FeegLood (2545) – Sadistika (2355), lichess.org, 2015.

3.e4 Nf6 4.e5 Nd5 5.Nc3 g6?? 6.Nd5+– c6 7.Ne3 Bg7 8.f4 d5 9.Nf3 Bh6 10.e6! fe6 11.Bh8 Bf4 12.Bd3 Nd7 13.Bg6 Kf8 14.0-0 Nb6 15.Ne5 Qd6 16.Rf4 Kg8 17.Qh5 Qb4 18.Qh7# 1–0. pierre – motas5405, internet, 2008.

3.e4 g6?? 4.Bh8+– Nh6 5.Nf3 c6 6.Bd3 Ng8 7.0-0 d6 8.e5 de5 9.Ne5 f6 10.Bg6# 1–0. usingprogram (2020) – maoxlin, kurnik, 2012.

3.e4 h4 4.Bc4 Rh6 5.Qf3 f6? 6.Bg8+– 1–0. Wall,Bill – Darryl66, internet, 2005.

3.h3 Nf6 4.a3 b6 5.Nf3 a5 6.b5 Ne4 7.d3 Nd6 8.c4 Nf5 9.e4 Nh6 10.Nbd2 Ng8 11.Be2 Bb7 12.Nd4 e6 13.0-0 Nf6 14.N4b3 Ng8 15.Bh5 Nf6 16.Bf3 e5 17.Be5 c6 18.Nd4 c5 19.Nf5 d6 20.Bc3 Bc8 21.Ne3 Nh5 22.Bh5 Qg5 23.Bg4 Rh4 24.Bc8 Nd7 25.Bb7 Rb8 26.Bc6 1–0. cogit – sebs1, kurnik, 2012.

2.Bb2 b6

3.b5 Bb7 4.a4 e6 5.e3 d6 (5...a6 6.Nf3=) 6.Nf3+= Nd7 7.Be2 f5 (7...a6!?+=) 8.0-0 (8.Nd4 Ke7 9.0-0 Ngf6+–) 8...Ngf6 9.c4 (9.Nd4 Nc5+–) 9...Be7 (9...a6 10.Nc3+–) 10.d4 (10.Ng5 Nf8+–) 10...Ne4 (10...a6 11.Ng5 Nf8 12.Nc3+–) 11.Nc3 (11.d5 Bf6 12.Nd4 Bd4 13.Bd4 e5+–) 11...g5 (11...h4 12.d5 Bf6 13.Nd4 Bd4 14.Qd4+–) 12.Ne4 fe4 13.Nd2 g4 14.d5 (better 14.Qc2+–) 14...e5? (better 14...Bf6!? 15.Bf6 Nf6+–) 15.Ne4+– Nc5 (15...Nf6 16.Bd3+–) 16.Nc5 bc5 17.Qd3 (17.f4 gf3 18.Bf3 Kd7+–) 17...Rh6 (17...Qd7 18.f4 gf3 19.Bf3+–) 18.f4 Bc8? (18...gf3 19.Bf3 Bf6+–) 19.fe5 Bg5 (19...Bf8+–) 20.e6 h4 (20...Be6 21.de6 Re6+–) 21.Rf5 (21.Rf5 Be6 22.Qe4+–; better 21.Bg7 Qe7 22.Bh6 Be6 23.Rf8 Qf8 24.Bf8 0-0-0 25.de6 Rf8+–) 1–0. BeepBeepImAJeep – Equalizer2016 (1755), lichess.org, 2016.

3.e3 Bb7 4.Nf3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 h5).

3.e3 Bb7 4.Nf3 h4 5.Be2 h3 6.g3 Nc6 7.b5 Na5 8.0-0 e6 9.c4 Bd6 10.Bg7 Rh7 11.Bc3 c6 12.a4 Qc7 13.d4 c5 14.Ne5 Nf6 15.Bd3 Rg7 16.Ba5 ba5 17.f4 Ne4 18.Nd2 Ng3 19.hg3 Rg3 20.Kf2 Rg2 21.Ke1 cd4 22.ed4 0-0-0 23.c5 Be7 24.Be4 Bh4 25.Rf2 Rf2 26.Bb7 Qb7 27.c6 dc6 28.bc6 Qc7 29.Ndf3 Rf3 30.Ke2 Rf2 31.Ke3 Qd6 32.Rb1 Qa3 33.Qd3 Qd3 34.Kd3 Rf4 35.Rb7 Rdd4 36.Ke3 Rb4 37.Ra7 Rfe4 38.Kd3 Re5 0–1. lllllll21 – rohu, kurnik, 2012.

3.Nf3+= Bb7 4.e3 e6 5.a3 h4 6.h3 Nc6 7.c4 Nf6 (8.Be2 Qe7+=; 7...a5 8.b5 Nce7 9.Be2+/–). wlittle (2100) – threefingers (1670), net–chess.com, 2005.

3.Nf3 f6 4.e3 d6 5.g3 Bg4 6.Bg2 h4 7.Qc1 hg3 8.hg3 Rh1 9.Bh1 Bh3 10.Nd4 e5 11.Ba8 ed4 12.Bd4 c6 13.b5 c5 14.Bc3 Qe7 15.Bf3 Nd7 16.Qa3 Ne5 17.Be5 Qe5 18.c3 Qf5 19.Bc6 Kf7 20.Qa7 Be7 21.Qb7 Qd3 22.Bg2 Be6 23.Bf1 Qc2 24.Na3 Qb2 25.Rd1 Qa3 26.Qb6 Qa2 27.Qa6 Qb2 28.b6 Bb3 29.Ra1 d5 30.b7 Bc4 31.Bc4 dc4 32.Qc4 Kg6 33.Qa6 Bd6 34.Qd3 Kh6 35.Rb1 Qa2 36.b8Q 1–0. rryy44 – dabrox, kurnik, 2012.

2.Bb2 c6

3.d3 a5 4.ba5 Qa5 5.Bc3 Qb6 6.Nd2 Nf6 7.Ngf3 Qc5 8.Bd4 Qd5 9.e4 Qe6 10.Be2 d6 11.0-0 Nfd7 12.Bb2 Rg8 13.h3 g5 14.Ng5 Rg5 15.Nf3 Rg8 16.Nh2 Nf6 17.Kh1 Nbd7 18.Bf3 h4 19.Ng4 Rb8 20.Bf6 ef6 21.Re1 Be7 22.d4 Nb6 23.Qd3 Qd7 24.c3 Qc7 25.Nh6 Rh8 26.Nf5 Be6 27.Be2 Na4 28.Reb1 b5 29.Bg4 c5 30.d5 Bd7 31.Ng7 Kd8 32.Qf3 Rg8 33.Nf5 Rg4 34.hg4 h3 35.gh3 Kc8 36.Kg2 Bf8 37.Rb3 Kb7 38.Rab1 Ka8 39.Qd3 c4 40.Qc2 cb3 41.ab3 Nc3 42.Rc1 b4 43.Nd4 Qb6 44.Ra1 Kb7 45.Qd2 Bg7 46.Nf5 Bf5 47.gf5 Ne4 48.Qe3 Qe3 49.fe3 Ng5 50.Kg3 Ne4 51.Kf3 Nc3 52.h4 Re8 53.h5 Bh6 54.e4 Ne4 55.Re1 Ng5 56.Kf2 Nh3 57.Kf1 Re1 58.Ke1 Nf4 59.Kf2 1–0. linakip – playok117, kurnik, 2012.

3.e3 a5 4.b5 cb5 5.Bb5 Nc6 6.Nf3 Qb6 7.a4 Na7 8.Bd4 Qg6 9.Bf1 e6 10.g3 Nc6 11.Nh4 Qe4 12.Bg2 Qh7 13.Bb2 Nb4 14.d3 d5 15.Nc3 Nc6 16.Nb5 Bb4 17.c3 Nge7 18.cb4 Nb4 19.Nd6 Kd7 20.Nf7 Nd3 21.Kf1 Nb2 22.Nh8 Nd1 23.Rd1 Qh8 24.Bh3 Qd8 25.Ng6 Qb6 26.Ne5 Ke8 27.Kg2 Bd7 28.Nd7 Kd7 29.e4 d4 30.Rd3 Nc6 31.e5 Ne5 32.Rd2 Qc6 33.Kg1 Nf3 34.Kf1 Nd2 35.Ke2 Qc2 36.Rc1 d3 37.Ke3 Qc1 38.Be6 Ke6 39.f4 Qe1 40.Kd3 Rd8 0–1. karoo54 – hajro56, kurnik, 2012.

3.Nf3 b6 4.g3 Bb7 5.Bg2 Qc7 6.0-0 Na6 7.a3 0-0-0 8.d3 Nf6 9.Nbd2 g5 10.Ng5 Rg8 11.h4 Nd5 12.c4 f6 13.Nf7 Re8 14.cd5 cd5 15.e4 Rg7 16.Rc1 Bc6 17.ed5 Rf7 18.dc6 Kb8 19.cd7 Qd7 20.Nc4 e5 21.b5 Nc5 22.a4 Rd8 23.Bc6 Qc7 24.d4 ed4 25.Bd4 Ne6 26.Qf3 Nd4 27.Qg2 Ne2 28.Kh1 Nc1 29.Rc1 Bc5 30.Ba8 f5 31.Bf3 f4 32.Nb2 fg3 33.fg3 Rdf8 34.Rf1 Rg8 35.Nd3 Rg3 36.Qe2 Rh3 37.Kg2 Qg3 0–1. giorgo – grzegorz102, playok.com, 2012.

2.Bb2 Nc6

3.b5 Nb8 4.e3 Nf6 5.Nf3 d6 6.a4 Bg4 7.h3 Bd7 8.c4 e5 9.d4 e4 10.Nh2 (10.Nfd2 Bf5+=) 10...Bf5 11.d5 Nbd7 12.Be2 Bg6 (12...Nc5 13.0-0=) 13.0-0+= Be7 14.Nd2 Nc5 15.Qc2 a5 16.Rfd1 b6 17.Nhf1 Qd7 18.Ng3 h4 19.Bf6 (19.Nh1 Bf5=) 19...hg3 (19...Bf6 20.Nge4 Ba1 21.Ra1=+) 20.Be7 (better 20.Bg7!? gf2 21.Kf2 Qf5 22.Kg1=) 20...gf2=+ 21.Kf2 Qe7 22.Qc3 Qh4 23.Kg1 0-0-0 24.Rf1 (24.Qg7? Rdg8 25.Bg4 Kb8–+) 24...Qg3 (24...Qg5 25.Rf4 f5 26.Kf2–/+) 25.Bg4 (better 25.Rf4!?=) 25...Kb8–/+ 26.Rf4? (better 26.Ra2–/+) 26...f5?? (better 26...Nd3 27.Nf1 Qh4–+) 27.Nf1+– (27.Bf5? Bf5 28.Rf5 Rh3–+) 27...Qf4 28.ef4 fg4 29.hg4 (worse 29.Qg7 Rdg8 30.Qf6 gh3=+) 29...Rdg8 30.f5 Be8 31.Ng3 (31.Re1 g6+–) 31...Rh4+– 32.g5 Rg4 (32...Bd7 33.g6+–) 33.g6 (33.Qe3!? Bf7+–) 33...Bd7+– 34.Rf1 (better 34.Ra3+–) 34...Rf8?? (better 34...Na4 35.Qe3 Nb2+–) 35.Qc2 (better 35.Qg7 Rc8 36.Ne2+–) 35...Rg3–+ 36.Qf2 (36.Kh2 Rg5 37.Qc3 Rf6–+) 36...Rg5 (better 36...Rg4!? 37.Qb2 Rf6 38.Qe2 Rf5 39.Rf5 Bf5 40.Kh2–+) 37.Qh4 Rgf5 38.Rf5 Rf5 39.Qe7 Re5 40.Qg7 e3 (better 40...Re8 41.Qf7 e3–+) 41.Qf8?? (better 41.Qe5! de5 42.g7+–) 41...Kb7–+ 42.g7 e2 43.g8Q e1Q 44.Kh2 (44.Qf1 Qe3 45.Qf2 Qc1 46.Qf1–+) 44…Rh5 0–1. Abdullaevich (1895) – Juan_Mollo (1870), lichess.org, 2020.

3.b5 Nb8 4.e4 a6 5.Nc3 ab5 6.Bb5 c6 7.Be2 b5 (7...d5 8.ed5 cd5 9.Nf3+= (worse 9.Bh5 Qb6 10.Bc1 d4=+)) 8.a3+– (8.Bh5?! b4 9.Nb1 Nf6=) 8...h4 (8...d6 9.Nf3+–) 9.h3 Qb6 (9...Nf6 10.e5 Nd5 11.Nd5 cd5 12.Bb5+–) 10.Nf3 Nf6 11.0-0 (11.e5 Nh5+–) 11...d6 (11...Na6 12.e5 Nh5 13.a4+– (13.Nh4?! Ng3 14.Nf3 Nf1=)) 12.d4 Nfd7 (12...Nbd7!? 13.e5 Nd5+–) 13.e5+– d5? (better 13...de5 14.de5 Nc5+–) 14.Ng5 e6 (14...g6 15.e6 fe6 16.Bd3+– (16.Ne6?! Nf6 17.Bg4 Na6+–)) 15.Bh5 g6 16.Qf3 gh5 (16...Ne5 17.de5 Qc7+–) 17.Qf7 Kd8 18.Ne6 1–0. Barcarola (1685) – evc75 (1620), internet free game, 2018.

2.Bb2 d5

3.d3 e6 4.a3 Nc6 5.g3 Nf6 6.Bg2 Bd7 7.Nd2 Qe7 8.e3 0-0-0 9.Ne2 Rh7 10.c4 dc4 11.Nc4 g5 12.0-0 g4 13.b5 Nb8 14.a4 h4 15.Ba3 Qe8 16.Nd4 e5 17.Nb3 hg3 18.fg3 Be7 19.Nca5 c6 20.bc6 Nc6 21.Be7 Qe7 22.Nc6 Bc6 23.Rc1 Nd5 24.Qg4 Kb8 25.Bd5 Bd5 26.Nc5 Rdh8 27.Nd7 Ka8 28.Rc7 Qb4 29.Rfc1 Bc6 30.Qb4 Rh2 31.R1c6 Rh1 32.Kg2 R8h2 33.Kf3 Rf1 34.Kg4 f5 35.Kg5 f4 36.Rc8# 1–0. Mr.Oldenslo – pieeater, ChessWorld.net, 2012.

3.d4 Bf5 4.e3=.

3.d4 g6 4.e3 Bg7 (4...Bf5 5.c4=) 5.Nd2 Nc6 (5...h4 6.c4=) 6.b5+= (6.b5 Na5 7.c4+=). sturgav – pieeater, ChessWorld.net, 2011.

3.d4 g6 4.Nf3 Bg7 5.e3 Nc6 6.c3 Bf5 7.Nbd2 Qd7 8.b5 Na5 9.Qa4 Nf6 10.Qa5 0-0 11.Be2 b6 12.Qb4 Ne4 13.Ne4 Be4 14.Nh4 Bf6 15.Nf3 Kg7 16.Nd2 Bg2 17.Rg1 Bh3 18.0-0-0 e6 19.Nb3 Be7 20.Qa4 Bf5 21.Bh5 Qd6 22.f4 Bf6 23.Ba3 Qd8 24.Bf8 Qf8 25.Rde1 Bh4 26.Ref1 Qe7 27.Qa6 f6 28.Qb7 Qa3 29.Kd2 Qa2 30.Kc1 Qc2# 0–1. gordiemac – pieeater, ChessWorld.net, 2011.

3.d4 g6 4.h3 Nc6 5.c3 Bf5 6.f3 (6.e3 Nf6=) 6...Qd7 (6...e5 7.e4 de4 8.b5 Qh4 9.Ke2 ed4 10.cd4–+) 7.Nd2=+ 0-0-0?? (7...Nf6=+) 8.g3?? (better 8.e4!? de4 9.fe4+–) 8...e5 (8...Qd6 9.f4 h4 10.b5–/+) 9.Bg2 (9.e4!? Be6 10.ed5 Qd5 11.b5=) 9...f6 (9...ed4 10.b5 dc3 11.Bc3–+) 10.e4 de4 (better 10...Be6!? 11.b5 Nce7=+) 11.fe4= Be6 (better 11...ed4 12.ef5 Re8 13.Kf1 dc3 14.Bc3 Qf5 15.Qf3 Qb5 16.Ne2 Bb4+–) 12.Ne2?? (12.d5 Bh6 13.Nb3 Bf7 14.dc6 Qc6+–) 12...f5?? (12...ed4 13.cd4 Nb4 14.Nb3–/+) 13.Qc2?? (better 13.d5!? Bh6 14.Bc1 fe4 15.dc6 (worse 15.de6 Qd3=+) 15...Qc6 16.Qc2+–) 13...Nf6 (13...ed4 14.Nd4 Bd6=) 14.d5= Nd5 15.ed5 Bd5 16.Rg1 (16.Nf3 Be4 17.Qd1 Qe8=+) 16...e4 (16...Bg2!? 17.Rg2 Bb4 18.cb4 Nb4=) 17.0-0-0 Ba2 (17...Bh6 18.Nf4 Qe8+=) 18.Ba3 (18.Ne4 Bh6 19.Nf4 Qe7+–) 18...Be6 (better 18...Qd3!? 19.Ne4 Qc2 20.Kc2 fe4 21.Rd8 Nd8 22.Be4 Bf7=+) 19.Ne4!+– Qf7 (19...fe4 20.Rd7) 20.Nd2 Bg7 (20...Bd5 21.Bd5 Rd5 22.Nf4+–) 21.h4 (better 21.Bc6 bc6 22.Nf4+–) 21...Rd5? (better 21...Ne5+=) 22.Bd5+– Bd5 23.c4 (23.b5 Ne5+–) 23...Be6 24.Nb3 (better 24.b5 Nd4 25.Nd4 Bd4 26.Rge1+–) 24...Bc4+– 25.Nd2?? (25.Nbd4 Nd4 26.Nd4 Rd8+–) 25...Ba2 (better 25...Be2 26.Nb3 Bd1 27.Rd1 Re8–+) 26.Nc3 (better 26.Rge1 Kb8 27.b5+–) 26...Rd8?? (better 26...Be6+–) 27.Na2 (27.Qa2 Qf6 28.Bb2 Kb8+–) 27...Bd4 (27...Nd4 28.Qc4 Qc4 29.Nc4+–) 28.Kb1 (better 28.Rgf1+–) 28...Ba1?? (28...Bg1 29.Rg1 Qe6+–) 29.Ka1 Nd4 30.Qc4 Qf6 (30...Qd5 31.Qd5 Rd5 32.Nc3+–) 31.Bb2 b6 (31...Qb6 32.Rge1 a6 33.Nf3+–) 32.Nf3! Nc2 (32...Nf3 A pinning theme 33.Bf6) 33.Qc2 Qf8 34.Rd8 Qd8 35.Rd1 (35.Qc6 Kb8 36.Be5 Qd7 37.Qd7 Kb7 38.Qc7 Ka6 39.Nc3 f4 40.Qc8) 35...Qe8 36.Be5 Qe7 37.Qc6 a5 (37...Kb8 38.Rc1 a5 39.Bc7 Qc7 40.Qc7 Ka8 41.Qc8 Ka7 42.Rc7) 38.Bf6 (38.Qa8) 38...Qf7 (38...Kb8 39.Be7 Ka7 40.Rd8 ab4 41.Ra8) 39.Rd8 1–0. gordiemac – pieeater, ChessWorld.net, 2010.

3.e3 Nc6 4.b5 Nb8 5.c4 Nf6 6.Bf6 ef6 7.h3 Bc5 8.Nc3 Nd7 9.cd5 Qe7 10.a3 Ne5 11.Nf3 Bd7 12.Ne4 0-0-0 13.Qc2 g5 14.Nc5 Nf3 15.gf3 f5 16.e4 fe4 17.fe4 Bf5 18.0-0-0 Bg6 19.Re1 f5 20.Bd3 fe4 21.Be4 Be4 22.Re4 Qf7 23.Ne6 Rde8 24.Rhe1 Qf2 25.Qc7# 1–0. 488 – pieeater, ChessWorld.net, 2012.

3.e3 Nc6 4.Bb5 Bd7 5.Bc6 Bc6 6.Nf3 Nf6 7.d3 Qd7 8.0-0 0-0-0 9.Ne5 Qe6 10.Nc6 Qc6 11.a3 e6 12.Nd2 g5 13.Bf6 Bd6 14.Bh8 Rh8 15.c4 dc4 16.Nc4 f5 17.Nd6 Qd6 18.Rc1 g4 19.g3 h4 20.Qc2 hg3 21.fg3 b6 22.d4 Rh3 23.Qg2 Rh5 24.Rc6 Qd7 25.Rfc1 Qd5 26.Qd5 ed5 27.Rc7 Kb8 28.Rd7 Rh6 29.Rd5 Kb7 30.Rf5 a6 31.a4 Rd6 32.Rf7 Kb8 33.Rcc7 Re6 34.Kf2 a5 35.ba5 ba5 36.Rce7 Rb6 37.Rf8# 1–0. Mr.Oldenslo – pieeater, ChessWorld.net, 2012.

3.e3 e6 4.a3 Nc6 5.c4 Bd7 6.cd5 ed5 7.Be2 Nf6 8.d3 Qe7 9.Nf3 g6 10.0-0 0-0-0 11.Re1 Bh6 12.Nc3 g5 13.Nd5 Qe6 14.Nf6 Rhf8 15.Nd7 Qd7 16.b5 Ne7 17.Bf6 Rde8 18.Bg5 Bg5 19.Ng5 Nf5 20.Bh5 Nh4 21.Bg4 Qg4 22.Qg4 Kb8 23.Qh4 b6 24.Qh5 Rh8 25.Qf7 Ref8 26.Qf8 Rf8 27.Rac1 Kb7 28.Ne6 Rh8 29.Rc7 Kb8 30.d4 Rh5 31.Rec1 Rf5 32.Rc8 Kb7 33.R1c7# 1–0. Darkseid – pieeater, ChessWorld.net, 2012.

3.e3 e6 4.b5 Nf6 5.c4 Bc5 6.d4 Bb4 7.Bc3 Bc3 8.Nc3 Bd7 9.Nf3+= Qe7 10.Bd3 g6 11.Ne5 (11.0-0+–) 11...0-0 12.Bg6?? (better is 12.0-0+/–) 12...Ng4?? (better is 12...fg6 13.Ng6 Qg7 14.Nf8 Qg2+=) 13.Bh5+– Nf2?? (13...Ne5 14.de5 Qb4 15.Qg4 Kh7+–) 14.Kf2 Qh4 15.g3 Qg5 16.Qg4 Qg4 17.Bg4 f6 18.Nd7 Nd7 19.Be6 Kg7 20.Bd7 b6 21.Nd5 Rad8 22.Nc7 Rd7 23.Ne6 Kf7 24.Nf8 Kf8 25.a4 Ke7 26.h4 Ke6 27.h5 Kf7 28.a5 Rc7 29.ab6 ab6 30.h6 Kg8 31.h7! Kh8 32.Ra8 Kg7 33.Rg8 Kf7 34.h8Q Ke6 35.Rh6 Rc4 36.Qf6 Kd5 37.Qe6# (37.Qf5#) 1–0. Darkseid – pieeater, ChessWorld.net, 2011.

3.e3 Bf5 4.Nf3 Nd7 5.Be2 e6 6.0-0 Ngf6 7.a3 Bd6 8.c4 dc4 9.Bc4 h4 10.h3 c6 11.d3 Qc7 12.e4 Bg6 13.Re1 Ne5 14.Ne5 Be5 15.Be5 Qe5 16.Nd2 b5 17.Nf3 Qc7 18.Bb3 Rd8 19.Qc2 Qb6 (Better is 19...Bh5 20.Nh4 Bg4+=) 20.Qc5?? (Better is 20.Ne5+–) 20...Qc5–+ 21.bc5 Nd7 22.d4= e5 23.Ne5 Ne5 24.de5 Rd3 25.Bc2 Rc3 26.Re2 Rc5 27.f4 f6 28.f5 Bh5–/+ 29.Rd2 fe5 30.Bb3 Bf7 31.Bf7= Kf7 32.Rd7 Kf6 33.Ra7 Rd8–/+ 34.Rc7 Rd4 35.Re1 Ra4 36.Re3 Rcc4 37.Kh2 c5 38.Rb3 b4 39.ab4= Rcb4 40.Rc6 Kg5 41.Rc3 Re4–+ 42.R6c5 Kf5 43.Rf3 Rf4 44.Re3 Rae4 45.Rf3 Rf3 46.gf3 Re2 47.Kg1 g5 48.Kf1? Rh2 (49.Kg1 Rh3–+) 0–1. chevin – berto, Live Game Caissa's Web, 2004.

3.e3 Nf6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 h5).

3.e3 Bg4 4.Be2 Be2 (4...e6 5.Nf3=) 5.Ne2 (5.Qe2 a6=) 5...Qd7 (5...e6 6.0-0=) 6.0-0 Qd6 (6...a5 7.ba5 Nc6 8.Nf4+=) 7.b5 (7.a3 Nc6+=) 7...Qc5 (7...Nd7!?+=) 8.a4 Nd7 (8...Nf6 9.Nbc3+–) 9.Nf4 (9.Ba3 Qb6 10.Nbc3 Ngf6+–) 9...Qb4? (better 9...Qd6+–) 10.Nd5+– Qb2 (10...Qd6 11.Nbc3 e6 12.Nf4+–) 11.Nbc3 Kd8 (11...0-0-0 12.Ra2 Qa2 13.Na2+–) 12.Ra2 (12.Ra2 Qa2 13.Na2+–) 1–0. GuestQVST – GuestGPZR, freechess.org, 2020.

3.e3 h4 4.c4 Nf6 5.a3=.

3.e3 h4 4.Nf3 a6 5.c4 (5.Be2 h3+=) 5...Bg4 (5...e6 6.c5=) 6.Be2 (6.Qa4 Bd7 7.Qb3 Be6+=) 6...Nc6 (6...h3 7.cd5 Qd5 8.Rg1=) 7.cd5+= Qd5 8.Nc3 (8.h3 Bh5+=) 8...Qd6 (8...Qd7 9.h3 Bf3 10.Bf3 Nb4 11.d4=) 9.a3 (9.b5 ab5 10.Nb5 Qd7+=) 9...0-0-0 (9...h3 10.gh3 Bh3 11.Ne4+=) 10.Ne4 (10.b5 ab5 11.Nb5 Qd5+=) 10...Qd5 (10...Qg6 11.Qc2=) 11.Neg5 (better 11.h3 Bf5 12.Nc3+=) 11...f6?? (better 11...Bf3 12.Nf3 h3=) 12.e4+– Qd7 13.Nf7 Rh6 14.Nd8 Qd8 (14...Kd8 15.d4 h3 16.gh3 Bf3 17.Bf3+–) 15.0-0 (better 15.Qb3 Rh8 16.Ng5+–) 15...Ne5? (15...h3 16.g3 e5+–) 16.Ne5 Be2 17.Qe2 fe5 18.Be5 e6 19.Rac1 (19.b5 a5+–) 19...Bd6 20.Bd6 Qd6 21.Rc3 (21.h3 Ne7+–) 21...e5 (21...h3 22.Rfc1 (worse 22.Rh3 Rh3 23.gh3 Ne7+–) 22...c6 23.g3+–) 22.Rd3 (22.Rfc1 Nf6+–) 22...Qg6 23.Qf3 Nf6 24.Qf5 (better 24.Qh3!? Qg4 25.Qg4 Ng4+–) 24...Qf5 25.ef5 e4 (25...Rh5 26.Rh3+–) 26.Re3 Rh5 27.g4 (27.f3 ef3 28.Rff3 Nd5+–) 27...hg3 (27...Ng4 28.Re4 Nh6 29.f6 gf6 30.Rc1+–) 28.Rg3 (28.fg3 c6+–) 28...Rf5 29.Rg7 Nh5 (29...c6+–) 30.Re1?? (better 30.Rg8 Kd7 31.Re1+–) 30...Ng7–+ 31.Re4 b5 (31...Rd5!? 32.Kg2–+) 32.Rg4 Ne6 33.Rg6 (33.Kf1 Rd5 34.Ke1 Nd4 35.Rg8 Kd7–/+) 33...Nf4 (33...Kd7 34.Kf1–+) 34.Ra6 Nd3 35.Rg6 Nf2 (35...Rf2 36.Rg5–+) 36.h4 Ne4 37.d3 Nc3 38.Kg2 Nd5 (38...Rh5 39.Rg8 Kd7 40.Rg7 Kd6 41.Rg6 Ke5 42.Kg3–+) 39.Kg3–/+ Rh5 (39...Rf1!? 40.h5 Kd7–+) 40.Kg4=+ Rh8 41.h5 Kd8 (41...Ne3 42.Kg5=+) 42.h6 (42.Kg5 Ke7=+) 42...Ke8 43.Kg5 Kf8 44.h7? (better 44.Rc6=+) 44…Rh7–+ (44...Rh7 45.Rc6 Rg7 46.Kh4 Ne7–+) 0–1. aravind555 (1755) – mobile5757 (1745), lichess.org, 2020.

3.Nf3 Nc6 4.a3 Bf5 5.e3 Nf6 6.Bb5 Bd7 7.Nc3 Qc8 8.h3 a6 9.Ba4 e6 10.0-0 Bd6 11.Ne2 e5 12.Bc6 Bc6 13.Ne5 Be5 14.Be5 Qe6 15.Bd4 0-0-0 16.Nf4 Qd7 17.Bf6 gf6 18.Nh5 Rdg8 19.Kh1 d4 20.Nf6 Rh3 21.Kg1 Rg2# 0–1. Spidy – pieeater, ChessWorld.net, 2012.

3.Nf3 Nc6 4.d4 Nf6 5.e3 Bg4 6.Nbd2 Qd7 7.Be2 0-0-0 8.h3 Bf5 9.a3 g6 10.c4 dc4 11.Bc4 Ne4 12.0-0 f6 13.Nb3 g5 14.Bd3 g4 15.hg4 hg4 16.Nc5 Nc5 17.bc5 Bg7 18.Ne1 Rh4 19.f3 Rdh8 20.Bf5 Qf5 21.Kf2 e6 22.a4 Rh2 23.Bc3 gf3 24.Qf3 Qf3 25.Nf3 R2h5 26.a5 e5 27.d5 Nd8 28.c6 bc6 29.dc6 Nc6 30.Rac1 f5 31.a6 e4 32.Bg7 Rg8 33.Rc6 Rg7 34.Ne5 Rgg5 35.Rf6 Rh8 36.Nf7 Rgg8 37.Nh8 Rh8 38.Rf5 Kd7 39.Rd1 Kc8 40.Re5 Rf8 41.Kg1 Rf6 42.Re4 Ra6 43.Re8 Kb7 44.e4 c6 45.Re7 Kb6 46.e5 Black resigned 1–0. Tonyone – pieeater, ChessWorld.net, 2011.

3.Nf3 e6 (--> 1.b4 d5 2.Bb2 e6 3.Nf3 h5).

3.Nf3 Nf6 4.a3 Nbd7 5.Bd4=.

3.Nf3 h4 4.e3 Nf6 5.c4 (5.Be2 e6=) 5...e6 (5...h3 6.Ne5=) 6.c5 Qd7 (6...b6 7.Bd4=) 7.Ne5 (7.Nc3 h3+=) 7...Qe7 (7...Qd8 8.Be2+=) 8.Bb5 (8.Bd3 h3 9.g3 Nfd7+=) 8...Nc6?? (better is 8...c6 9.Be2 b6+=) 9.Nc6+– (9.Nc6 Qd7 10.Na7+–) 1–0. Wall,Bill – Calvin247, internet, 1999.

3.Nf3 h4 4.h3 Nf6 5.e3 Nc6 6.b5 Na5 7.Be2 Nc4 8.Bc1 (better 8.Bc4 dc4 9.0-0+=) 8...Ne4?? (better 8...Bf5=) 9.d3+– Nf2 10.Kf2 Nd6 11.a4 e5 12.Ne5?? (12.Nc3 e4 13.Nd4+–) 12...Qg5?? (better 12...Qf6 13.Kg1 Qe5=+) 13.Nf3+– Qg3 14.Kf1 Nf5 15.Qe1 (15.a5 Bb4+–) 15...Qd6 16.Ba3 (better 16.Rg1!?+–) 16...Qf6 17.Qc3?? (better 17.Ra2 Ba3 18.Na3 (18.Ra3?! Ne3 19.Kf2 Nc2=) 18...Ng3 19.Kg1 Nh1 20.Kh1+–) 17...Ng3=+ 18.Kf2 (18.Ke1!? Nh1 19.Qf6 gf6 20.Bf8 Kf8 21.Nc3=+) 18...Nh1–/+ 19.Ke1 Qg6 20.Bf1? (better 20.Qe5 Qe6 21.Bf8 Qe5 22.Ne5 Rf8 23.Bf3–/+) 20...Qg3–+ 21.Kd1 Ba3 22.Na3 0-0 (22...Bh3 23.Qe5 Be6 24.Qg3 Ng3 25.Kd2–+) 23.Qe5 (23.Qb4 Bh3! 24.Qh4 Rae8–+) 23...Qe5 (better 23...Qf2!? 24.Nd2–+) 24.Ne5 Ng3 25.Ke1 Re8 26.d4 (26.Nf3 Nf5–+) 26...f6 27.Nf3 Re3 28.Kf2 Re7 (28...Nf1 29.Kf1 g5 30.Kf2–+) 29.Bd3 (29.Nh4 Nf1 30.Kf1 a6–+) 29...c6 (29...g5 30.Re1 Re1 31.Ne1–+) 30.c4 (30.Nh4 Ne4 31.Kg1 g5–+) 30...dc4 (better 30...Ne4!? 31.Kg1 g5 32.Re1–+) 31.Bc4 Kh8 (31...Be6 32.Nh4 Ne4 33.Kg1–+) 32.Nh4 Ne4 33.Kg1 Kh7 34.Bd3 g6 (34...Bd7 35.bc6 bc6 36.Nc4–+) 35.Re1–/+ f5 36.Nc4 Rd7 37.bc6? (better 37.Nf3!? cb5 38.Nce5–/+) 37…bc6 (37...bc6 38.Be4 fe4 39.Re4 Rb8=) 0–1. amirgloo (1925) – SerggZerg (1905), lichess.org, 2021.

2.Bb2 d6

3.a4 b6 4.b5 a5 (4...a6 5.e4=) 5.e3 g6?? (better 5...e5+=) 6.Bh8+– Nf6 7.Bf6 ef6 8.c4 Bf5 9.Nf3 Nd7 (9...Bc8 10.d4+–) 10.Be2 Nc5 11.Nc3 (11.0-0 Qd7+–) 11...Ne4 (11...Nd3 12.Kf1 Nb4 13.Nd4+–) 12.Ne4 (12.Nd5 Bg7+–) 12...Be4 13.0-0 Be7 (13...Qd7 14.Nd4+–) 14.d3 Bb7 15.Nd4 d5 16.Bf3 Bc5 17.Nc6 (better 17.Ne2!? Qe7+–) 17...Bc6 18.bc6 Qd6 (18...dc4 19.d4 Bb4 20.Rc1+–) 19.d4 Bb4 20.Bd5 0-0-0 (20...Qe7 21.Qf3+–) 21.Qd3 Qf8 (21...Rf8 22.Rad1 f5 23.Bf3+–) 22.c5 b5 (22...Rd5 23.cb6 Kd8 24.Qe4 cb6 25.Qd5 Qd6 26.Qf7+–) 23.Qb5 (better 23.ab5 Rd5 24.Qc4 Qe8 25.Qb4 Kd8 (25...ab4?? 26.Ra8) 26.Ra5 Ke7+–) 23...Rd5 24.Qb7 Kd8 25.Qb8 Ke7 26.Qc7 Ke6 27.Rad1 (better 27.Qb6 Bc5 28.Qb7+–) 27...Qa8 (27...f5+–) 28.e4 Qf8 29.ed5 Kf5 30.Qd7 Kf4 31.h4 Bc5 (31...Qb8 32.Qh3 Bc5 33.Qf3) 32.g3 (32.Rfe1 f5 33.dc5 Qe7 34.Re7 g5 35.Rd4) 32...Kf3 33.Rd3 (33.Rfe1 f5 34.Re3 Kg4 35.Kg2 Qd6 36.f3) 33...Ke2 (33...Ke4 34.Re3 Kd4 35.c7 Qe8 36.Rd1 Kc4 37.Qe8 Be3 38.Qb5 Kc3 39.c8Q Bc5 40.Qcc5) 34.Re3 Kd2 35.dc5 (35.Qb7 Qb8 36.Qa6 Qg3 37.Rg3 Bd4 38.Qd3) 35...g5 36.Qb7 (36.Qf5 Qc5 37.Qd3) 36...Qc5 (36...Qb8 37.Qb8 Kc2 38.Qb3 Kd2 39.Rd1) 37.Qb2 Qc2 38.Re2! (38.Re2 Ke2 39.Qc2 Kf3 40.c7 gh4 41.Qd1 Ke4 42.Re1 Kf5 43.Qh5) 1–0. BeepBeepImAJeep (2570) – meegnorvm (1865), lichess.org, 2017.

3.c4 Nc6 4.b5 Ne5 5.e3 g6 6.f4 e6 7.fe5 d5 8.Nf3 Bg7 9.Bd3 Bd7 10.0-0 Qe7 11.Nd4 0-0-0 12.Qb3 Be5 13.Nc3 Nf6 14.Ba3 Qe8 15.Nc6 Bc6 16.bc6 Qc6 17.cd5 ed5 18.Rac1 Ne4 19.Ne4 Qe8 20.Nc5 b6 21.Ba6 Kb8 22.Bb5 Qf8 23.Na6 Kc8 24.Bf8 Rhf8 25.Rc7 Bc7 26.Rc1 f5 27.Rc7 1–0. AsceticKingK9 – pieeater, ChessWorld.net, 2012.

3.c4 e5 4.d4 e4 5.e3 Bg4 6.Be2 Be6 7.Nd2 Qg5 8.Ne4 Qg2 9.Bf3 Bg4 10.Bg4 hg4 11.Ng3 Nc6 12.N1e2 Nb4 13.Nf4 Qf3 14.Qa4 Nc6 15.d5 b5 16.Qb5 Rd8 17.Qc6 Rd7 18.Qa8 Ke7 19.Nf5 1–0. zielonoxd – playok117, kurnik, 2012.

3.e3 Bg4 4.Nf3 f5 (4...e5!?=) 5.Be2 Na6 6.b5 Nc5 7.0-0 a6 8.c4 ab5 9.cb5 Ra5 10.Nd4 g6? (better is 10...e5 11.Bc3 Ra8+=) 11.Bg4 fg4 12.Nb3 (better is 12.Nc6 bc6 13.Bh8 cb5 14.Qc2+–) 12...Rb5?? (better is 12...Nb3 13.Qb3 e5+/–) 13.Bh8+– c6 14.d4 Ne4 15.a4 Rb3 16.Qb3 Qb8 17.Qg8 Kd7 18.Qg6 b5 19.Qe4 Qa8 20.Qf5 Kd8 21.Nc3 b4 22.Ne4 d5 23.Nc5 Qa7 24.Ne6 Ke8 25.Qh5 Kd7 26.Nf8 Kc7 27.Ne6 Kb6 28.a5 Kb5 29.Qg4 Qa8 30.Nc7 Kc4 31.Na8 b3 32.Qe2 Kc3 33.Rfc1 Kb4 34.Qb2 c5 35.dc5 d4 36.Qd4 Kb5 37.Qc4 Kc6 38.Qb3 e6 39.Qb6 Kd5 40.Rd1 Ke4 41.Rd4 Kf5 42.Rf4 Kg5 43.Bf6 Kg6 44.Qe6 Kh5 45.Qg4 Kh6 46.Qg7 Kh5 47.g4# 1–0. ariank – illuminium123, kurnik, 2011.

3.e4 Nf6 4.Nc3 e5 5.b5=.

3.Nf3 Nc6 4.b5 Na5 5.e4 Bd7 6.d4 g6 7.Bc3 b6 8.Bd3 Nf6 (8...Bg7 9.0-0+/– Nf6 10.e5 de5) 9.0-0 (9.e5 Nd5 10.Ba5 (10.0-0 de5) 10...ba5+–) 9...Qc8 (9...Nb7 10.e5 (10.Bb2 c6) 10...Nd5 11.Bd2 de5 12.c4+–; 9...Bg7 10.e5 de5) 10.Re1 (10.e5 Nd5) 10...Qb7 (10...Bg7+/– 1.08) 11.e5 de5?? (better is 11...Nd5+–) 12.de5 (12.Ne5?! Bg4 13.Ng4 hg4+/–; 12.Re5?! Bg4 13.Nbd2 Bg7+/–) 12...Nd5 13.e6 Nc3 14.ed7 Kd7 15.Nc3 Qb8 16.Bf5 Ke8 17.Qd7# 1–0. Raffzahn – pieeater, ChessWorld.net, 2010.

3.Nf3 e5 4.e3 f5 5.d4 e4 6.Nfd2 Nf6 7.Be2 d5 8.c4 c6 (8...Bb4 9.a3 Be7 10.Nc3+=) 9.b5 Be6 10.a4 Bb4 11.cd5 Bd5 12.Nc3 Bc3 13.Bc3 Nbd7 14.Nc4 cb5 15.Nd6 Ke7 16.Nf5 Ke6 (better is 16...Kf7!? 17.ab5 Kg6 18.Nh4 Kh7+/–) 17.Ng7 Kf7 18.Nh5 Qc7 19.Rc1 Qd6 20.Nf6 Nf6 21.ab5 Rh2 22.Rh2 Qh2 23.g3 (better is 23.Bf1!?+–) 23...Qg1+/– 24.Bf1?? Bc4+= 25.Kd2 Qf2 26.Be2 Nd5?? 27.Qf1+– Qf1 28.Rf1 Ke6 29.Bc4 Rc8 30.Bd5 Kd5 31.Rf5 Ke6 32.Re5 Kd6 33.Re4 Rc4 1–0. typ48 – katon111, kurnik, 2012.

3.Nf3 Nf6 4.d4 d5 5.e3=.

2.Bb2 e6

(--> 1.b4 e6 2.Bb2 h5).

3.b5 Nf6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 h5).

2.Bb2 f5

3.e3 d6 4.Be2 Nf6 (4...h4 5.Bh5 Kd7 6.Nh3+–) 5.Bf6+– ef6 6.Bh5 Kd7 7.Qf3 c6 (7...Qe7 8.d4+– (8.Qf5 Kd8 9.Qg6 Qe5–/+)) 8.Qf5 (8.Bg6 d5 9.Bf5 Ke8 10.Bg6 Ke7+–) 8...Kc7+– 9.Qa5?? (better 9.Qg6+–) 9...b6–+ 10.Qa4 Rh5 11.Qb3 Bf5?? (better 11...Rg5 12.g3 Qe7–+) 12.Qf7+– Nd7 13.Qh5 g6 (13...Bc2 14.d4+–) 14.Qh7 (14.Qd1 Ne5+–) 14...Qe8 (14...Bc2 15.Nf3 Qe7 16.Qe7 Be7 17.Nc3+–) 15.Nf3 Qe4 (15...Bc2 16.Nc3 Bd3 17.Rc1+–) 16.0-0 (16.Nc3!? g5 17.Qh5 Bg6 18.Ne4 Bh5+–) 16...g5 17.Qf7 (17.Qg8 Be6 18.d3 Bg8 19.de4 d5 20.ed5 Bd5+–) 17...Be6 18.Nc3 (18.d3 Qg4 19.Qh7 Bf5+–) 18...Qg4 (18...Bf7 19.Ne4 g4 20.Nd4+–) 19.h3 (19.Qh7 Bf5 20.Qh8 Bc2+–) 19...Qc4 (19...Qg2 20.Kg2 Bf7 21.Nd4+–) 20.d3 (better 20.Qg6!? Bf7 21.Qf5 Be6+–) 20...Bf7 21.dc4 Bc4 22.Ne4?? (better 22.Rfd1+–) 22...Bf1 23.Kf1 d5 24.Nc3 Bb4 25.Ne2 Ne5 26.Ne5 fe5 27.Rb1 c5 (27...Bd6 28.e4=+) 28.c3 Ba5 29.Ng3? (29.a3 Rf8=+) 29...Re8 (better 29...Bc3!? 30.Rb3 Ba5–+) 30.Ne2 d4 (better 30...Kd6=+) 31.cd4 ed4 32.ed4 cd4 (32...Rd8 33.Rc1 Kc6 34.g3+–) 33.Nd4 Re4 34.Nb5 (34.Rc1 Kb7 35.Nf3 g4 36.hg4 Rg4+–) 34...Kc6 (34...Kb8!?+–) 35.Na7+– Kc5 36.Nb5 Rb4 37.Rb4 Bb4 38.Nc7 (38.Na7 Bc3+–) 38...Kc4 (38...Kd6 39.Ne8 Ke7 40.Ng7+–) 39.Ne6 Kc3?! (39...Be7+–) 40.Ng5 Kb2 41.a4 Kb3 42.Ne4 Ka4 43.h4 Bc5 (43...Kb5+–) 44.Nc5 bc5 45.Ke2 c4 46.Kd2 (better 46.h5 Kb5+–) 46...Kb3 47.h5 (better 47.Kc1+–) 47...c3 (47...Kb2 48.h6 c3 49.Ke2 c2+–) 48.Kc1 (48.Kc1 Kc4 49.Kc2+–) 1–0. aravind555 – litchesshichem, lichess.org, 2018.

3.Nf3 d5 4.e3 b5? 5.Bb5+– Bd7 6.Bd7 Nd7 7.0-0 Rh6 8.d3 Re6 9.e4 Nh6? 10.ed5 Rg6 (11.Nd4 Nf6+–). marcosr – doubleattack, net–chess.com, 2005.

2.Bb2 f6

3.c4 e5= 4.a3 a5 5.b5 c6 6.e3 cb5 7.cb5 b6 (7...d5 8.d4 e4 9.Nc3+=) 8.Nf3 (8.d4 ed4 9.Bd4 Bb7+/–) 8...Bb7 9.Be2 Bf3? (better is 9...g5!?+=) 10.Bf3+– (10.gf3?! g6+/–) 10...d5 11.Nc3 (better is 11.d4 e4 12.Bh5 Ke7 13.Nc3+–) 11...e4? (better is 11...Ne7+/–) 12.Bh5+– Ke7 13.h3 Nc6?? 14.bc6 Rc8 15.Bg4 Rc6 16.0-0 Nh6 17.Be2 f5 18.Bb5 Rg6 19.f4 Ng4 20.hg4 fg4 21.Kf2 g3 22.Ke2 d4 23.Ne4 Re6 24.Ng5 Rd6 25.Bd4 Rh2 26.Kf3 g6 27.Ne4 Re6 28.d3 g5 29.Ng5 Rg6 30.Ne4 Bh6 31.Qb3 Qa8 32.Qc4 Kf8 33.Qc7 Re6 34.Bb6 Rg2 35.Kg2 Bg7 36.Rac1 (36.Rac1+–) 1–0. Fournier,Frederic – FilomenoCorrale, Active, 2007.

3.c4 g5 4.c5 (4.e4 e5 5.Be2 Bb4 6.Bh5 Ke7+=) 4...b5 (4...d5 5.d4=) 5.e3 (5.Qc2 Rh6+–) 5...c6 (5...Bb7 6.f3+= (6.Bb5 Bg2 7.Be2 g4 8.Bg4 hg4 9.Qg4 Bd5–/+)) 6.Qc2 (6.Be2 g4 7.h3 a5+–) 6...Kf7 (6...Rh6 7.Be2 g4 8.Bd3+–) 7.Qb3 (7.a4 ba4 8.Nf3 e5+–) 7...e6 8.Bd3 (8.a4 ba4 9.Ra4 d5+–) 8...d5 (8...a5 9.Nf3 Rh6 10.a3+=) 9.Bc2 (9.a4 ba4 10.Ra4 e5+–) 9...a5+= 10.Qd3 (better 10.d4+=) 10...Nh6?? (better 10...ab4 11.Qg6 Ke7=) 11.Qg6+– Ke7 12.Bf6 Kd7 13.Bd8 Be7 14.Be7 Na6 15.Bg5 Kc7 16.Bh6 (16.Bf4 Kd8 17.Qf6 Ke8 18.Bg6 Kd7 19.Qg7 Nf7 20.Qf7 Kd8 21.Bg5) 16...Rd8 17.Qg7 Rd7 18.Qe5 Kb7 19.Qe6 (19.ba5 Nb4 20.Bg6 d4 21.ed4 Rd5+–) 19...Nc7 20.Qe5 (20.Qg6 ab4 21.Nf3 Rd8+–) 20...ab4 21.a4! Na6 (21...Ra4 22.Ba4) 22.ab5 cb5 23.c6! Kc6 24.Qe6 (24.Bf4!? Kb7+–) 24...Rd6 25.Ra6 (better 25.Qe8 Kb6 26.Qh5 Nc7 27.Ra8 Na8+–) 25...Ba6 26.Qe5 b3 27.Qc3 (better 27.Bb3 Rad8 28.Bf4 b4 29.Qh5 Bc4 30.Bd6 Rd6 31.Qe8 Kc7 32.Qe7 Rd7 33.Qc5 Kd8+–) 27...Kb6 28.Qd4 Ka5 29.Qc3 (better 29.Bb3 Rh6 30.Nc3 Bb7+–) 29...Kb6 30.Bf4 (better 30.Bb3 d4 31.ed4 Rc8+–) 30...Rc6 31.Qb3 Rac8 32.Nc3 Rc4 33.Nd5 Ka7 34.Be4 (better 34.Bd1 Rd8+–) 34...Re4 35.Nc3 Rec4 36.Nb5 Ka8 37.Ne2 R4c5 38.Nc7! R8c7 (38...R5c7 39.Bc7) 39.0-0 (39.Bc7!? Rc7 40.Qb6 Ra7+–) 39...Rb7 40.Qa4 Ra7 41.Bd6 (41.Rb1 Rc1 42.Nc1 Bb5 43.Qb5 Ra2 44.Qb7) 41...Rd5 42.Qe8 (42.Qc6 Rb7 43.Qa6 Ra7 44.Qc8) 42...Kb7 43.Rb1 Bb5 44.Qb8 (44.Nd4 Ra3 45.Rb5 Ka7 46.Qe7 Ka6 47.Qb7) 44...Ka6 (44...Kc6 45.Rc1 Kd7 46.Rc7 Rc7 47.Qc7 Ke6 48.Nf4 Kf5 49.Qf7 Kg4 50.f3 Kh4 51.Qf6 Rg5 52.g3) 45.Ra1 Ba4 46.Ra4 Ra5 47.Nc3 (47.Nd4 Rd7 48.Ra5 Ka5 49.Qb5) 47...Ra4 (47...Rb7 48.Ra5 Ka5 49.Qb7 h4 50.Qb5) 48.Qb5 1–0. MARYMARY – Darrell, ChessWorld.net, 2013.

3.c4 g5 4.c5 (4.e4 e5+=) 4...d5= 5.e3 e5 6.Qa4 (6.d4 a5+=) 6...c6 7.b5 (7.d4 Nd7=) 7...Bd7 (7...Bc5 8.d4 Bd6 9.de5 fe5 10.Nf3–/+) 8.b6 (8.d4 cb5 9.Bb5 Nc6=) 8...a6?? (better 8...Bc5 9.ba7 Ra7–/+) 9.Ba6?? (better 9.d4=) 9...ba6 (9...Na6!? 10.Qc2 Nc5 11.d4 ed4 12.Bd4–+) 10.b7? (better 10.d4–+) 10...Ra7 11.Qb3 (11.Qc2 Rb7 12.d4 Nh6–+) 11...Qc7 (11...Bc5 12.d4 ed4 13.Bd4 Bd4 14.ed4 Qe7 15.Ne2–+) 12.Nc3 (12.d4 Rb7 13.Qc2 Ne7–+) 12...e4 (12...Bc5 13.Qc2–+) 13.Nd5 (13.Qa3 Rb7 14.h4 gh4 15.Rh4 Bc8–+) 13...cd5 14.Qd5 Rb7 (better 14...Qb7!? 15.Qb7 Rb7 16.Bd4–+) 15.Qe4 Ne7 (15...Kf7!? 16.Qc2 Qc5 17.Bc3–+) 16.Bf6 Bc6 17.Qe6 (17.Qe5 Qe5 18.Be5 Bg2 19.Bh8 Bh1 20.Rc1–+) 17...Rb2 (better 17...Rh6 18.h4 gh4–+) 18.Bb2 (18.Bh8 Rc2 19.Qh3 h4+–) 18...Bg2 (better 18...Rh6 19.Qe5 Qe5 20.Be5 Bg2 21.Bb8 Nc6=+) 19.Bh8+– Bh1 20.Bf6 (20.Be5 Qc6 21.Qh3 Nd7 22.Qh5 Kd8+–) 20...Bd5 (better 20...Qh2 21.Be7 Be7+= (21...Qg1? 22.Ke2 Qg4 23.Qg4 hg4 24.Rh1 Ke7 25.Rh7 Kd8 26.d4+–)) 21.Qb6?? (21.Qh3 Bf7 22.Qg3 Qg3 23.hg3 Nd5 24.Bg5 Nb4+–) 21...Qb6?? (better 21...Qh2 22.Ke2 g4=+) 22.cb6+– Nf5 (better 22...g4!? 23.a4 Nd7 24.Be7 Be7+–) 23.Bg5+– Bb4 (23...Nd7 24.Rb1+–) 24.a3 (24.Kf1 Nd6 25.Bf4 Kd7+–) 24...Bc5 (24...Bd6+–) 25.e4?? (better 25.Rb1+–) 25...Be4+= 26.Bf4 (26.d3 Bb7+=) 26...Nd7= 27.Bc7 (27.d3 Bd5=) 27...Bd4 (27...Nd4!? 28.Rc1 Ba3=+ (worse 28...Bb6 29.Bb6 Nb6 30.Rc5+=)) 28.Rc1 Bb6 29.Bb6 Nb6 30.f3 Bd5 31.Rc5 Nd4 Attacks the isolani on f3 32.Ne2 (better 32.Ra5+=) 32...Bf7?? (better 32...Nf3 33.Kf2 Nh2–/+) 33.Nd4+– Nd7 (33...Nc4 34.Rc8 Ke7 35.Rc7 Kf6 36.Rc6 Ke5 37.Nc2+–) 34.Rc8 (34.Rc6 Ne5 35.Ra6 Bd5+–) 34...Ke7 35.Ra8 (35.Rc6 a5 36.Ra6 Ne5+–) 35...Nc5 36.Nf5 (36.Nc6!? Kd6 37.Nb4 Bc4+–) 36...Kf6 37.Nh6 (37.Ne3 Ke5+–) 37...Nd3 38.Ke2 Nf4 (38...Bc4+–) 39.Ke3 Nd5 40.Ke4 Nc7 41.Rf8 Ne8 (41...Nb5 42.Nf7 Ke7 43.Rb8 Na3 44.Ne5+–) 42.Rf7 Kg6 43.Rf8 (43.Re7 Nd6 44.Kd3 Kh6 45.Re6 Kh7 46.Rd6 a5+–) 43...Ng7 (43...Nf6 44.Kf4+–) 44.Nf5 h4 (44...Ne6 45.Rc8 Ng5 46.Kf4+–) 45.Nh4 (better 45.Rg8 Kf7 46.Rg7 Kf8+–) 45...Kh7 46.Ra8 Kh6 47.Ra6 Kh5 48.Nf5 Nf5 (48...Ne6 49.Re6 Kg5 50.h4 Kh5 51.Rh6) 49.Kf5 Kh4 50.d4 (50.Rh6) 50...Kh3+– 51.Rh6 (51.d5 Kg2 52.f4 Kf2 53.d6 Ke2 54.d7 Kd2 55.d8Q Ke3 56.Re6 Kf3 57.Qd3 Kf2 58.Re2 Kg1 59.Qd1) 51...Kg2 52.f4 Kf3 53.d5 Ke3 54.d6 Kd4 (54...Kd2 55.d7 Kc2 56.d8Q Kc3 57.Qc7 Kd3 58.Rd6 Ke3 59.Qc2 Kf3 60.Rd3) 55.d7 Kc5 (55...Kd3 56.d8Q Kc2 57.Qc7 Kd3 58.Rd6 Ke3 59.Qc2 Kf3 60.Rd3) 56.d8Q Kb5 (56...Kc4 57.Rc6 Kb3 58.Qd3 Kb2 59.Rc2 Ka1 60.Qd1) 57.Qb6 (57.Qd5 Ka4 58.Ra6) 57...Kc4 58.Rd6 Kc3 59.a4 (59.Qb4 Kc2 60.Rd2 Kc1 61.Qb2) 59...Kc2 (59...Kc4 60.Qd4 Kb3 61.Rb6 Kc2 62.Rb2 Kc1 63.Qd2) 60.a5 (60.Qc5 Kb3 61.Rb6 Ka2 62.Qc2 Ka3 63.Qb3) 60...Kc3 61.a6 (61.Rc6 Kd3 62.Qb3 Kd4 63.Qc3 Kd5 64.Qc5) 61...Kc4 (61...Kc2 62.Qc5 Kb3 63.Rb6 Ka4 64.Qb4) 62.Qc6 (62.a7 Kc3 63.a8Q Kc4 64.Qac6) 62...Kb4 63.Rd5 Kb3 64.Rb5 Ka3 65.a7 Ka2 (65...Ka4 66.a8Q) 66.Qa6 (66.a8Q) 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.c4 g5 4.e3 h4 5.Be2 Threatening mate: Bh5 5...d6 6.Qa4 (6.Bh5 Kd7+–) 6...c6 7.b5 Bd7 8.Bd3 The mate threat is Bg6 8...a6?? (better 8...Rh6+=) 9.b6 (9.Bg6) 9...c5?? (better 9...Qb6 10.Nc3 A) worse 10...Qb2 11.Rb1 c5 12.Nb5 (12.Rb2?! Ba4 13.Na4 Ra7=) 12...Qb1 13.Bb1+–; B) 10...e5=+) 10.Bg6 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.c4 g5 4.e3 h4 5.Ne2 d6 6.Qa4 c6 7.b5 Bd7 8.Nbc3 Bg7 9.b6 (9.Qc2!?+=) 9...c5 (9...Qb6 10.Qc2=+) 10.Nb5 a6?? (better 10...Qb6 11.Nec3 e6=+) 11.Nc7+– Qc7?? (11...Kf8 12.Qc2 Nc6 13.Na8 Qa8+–) 12.bc7 Nc6 13.Nc3 Rc8 14.Bd3 (14.Qb3 Rc7 15.Nd5 Rc8+–) 14...Rc7 (14...Ne5 15.Qc2+–) 15.Bg6 (15.Nd5!? Rc8 16.Bg6 Kd8+–) 15...Kd8 16.Nd5 Rc8 (16...Nb4 17.Qa5 Nd5 18.cd5+–) 17.Nb6 (17.Bc3 Rb8 18.Ba5 Kc8 19.Nb6 Kd8+–) 17...Rb8 (17...h3 18.Nc8 hg2 19.Rg1 Kc8 20.Rg2+–) 18.d4 Rh6 (18...h3 19.Nd7 hg2 20.Rg1 Kd7 21.d5 Rh2 22.dc6 bc6 23.Qa6+–) 19.Nd7 Kd7 20.Bf5 e6 21.Be4 b5 (21...cd4 22.Bc6 bc6 23.Qa6 Rc8 24.Qa7 Rc7 25.Qd4 Ne7+–) 22.Bc6 Kc6 23.cb5 (better 23.Qa6 Kc7 24.dc5+–) 23...Kb6 (23...Kc7 24.dc5 Rb5 25.cd6 Kd8+–) 24.Qa6 Kc7 25.Qc6 Kd8 26.Qd6 Kc8 27.Qc5 (27.dc5 Rb7 28.Rd1 Re7 29.Qc6 Kb8 30.Rd8 Ka7 31.Qb6) 27...Kb7 28.Qe7 (28.Qc6 Ka7 29.Qa6) 28...Ka8?? (better 28...Ne7 29.a4 Ka8+=) 29.Qg7 (29.Qa3 Kb7 30.Rc1 Ra8 31.Qd6 Ra3 32.Rc7 Ka8 33.Qd8) 29...Rc8 30.Qd7 (30.b6 Rc7 31.Qc7 h3 32.Qc8) 30...Rb8 31.Qc6 (31.Ba3 Rh7 32.Qc6 Rhb7 33.b6 Rd8 34.Bd6 Rd6 35.Qc8 Rb8 36.Qa6) 31...Rb7 32.Qe6 (32.b6 Ne7 33.Qe8 Rb8 34.Qa4 Kb7 35.Qa7 Kc6 36.Rc1 Kd5 37.Qd7 Ke4 38.Qe6 Kd3 39.Rc3) 32...Ne7+– 33.b6 (better 33.Ba3 Rh7+–) 33...Kb8 34.Qd6 (34.Ba3 Rh8 35.Be7 Rc8 36.Bd6 Rbc7 37.Rb1 Ka8 38.Qd5 Kb8 39.bc7 Ka7 40.Qb7) 34...Ka8 35.Qa3 (better 35.Qd8!? Rb8 36.Qe7 Rb6+–) 35...Kb8 36.Qd6 (36.Rc1 Rh8 37.Qd6 Ka8 38.Rc7 h3 39.Qe7 g4 40.Qe4 Rhb8 41.Qd5 hg2 42.Qa5 Ra7 43.Qa7) 36...Kc8?? (36...Ka8 37.Qd8 Rb8 38.Qe7 Rb6 39.Qf8 Kb7 40.Qh6 Rb2 41.Qf6 h3+–) 37.Rc1 Rc7 (37...Nc6 38.Rc6 Rc7 39.Qc7) 38.Qc7 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.c4 Nh6 4.Qc2 Nf7 5.e3 d6 6.Nf3 g5 7.Be2 c6 8.0-0 Na6 9.a3 Nc7 10.Nc3 Bg7 11.d4 h4 12.h3 g4+= 13.hg4 Bg4 14.Nh2 Be2=+ 15.Ne2 Qd7 16.Nf4= 0-0-0 17.d5 Rdg8 18.Nf3 Bh6 19.dc6 Qc6 20.Qf5 Kb8+= 21.Ne1?? Bf4–+ 22.Qf4 h3 (23.Qg3 Rg3 24.fg3 Ng5–+) 0–1. StephenHilton (1605) – juanpacio (1680), internet, 2006.

3.c4 Nh6 4.e4 e5 +=.

3.c4 Nh6 4.Nf3 Nf7 5.e4 d6 6.Be2 c6 7.h3 g5 8.d3 Bg7 9.Nbd2 Na6 10.a3 Nc7 11.0-0 Ne6 12.Nb3 Nf4 13.Rc1 Qd7 14.Qd2?? Ne2 15.Qe2=+ g4 16.Nh4 gh3–/+ 17.g3 h2 18.Kh1 Ng5 19.f4= Ne6 20.f5+= Ng5 21.Kh2 b6 22.d4 Bb7 23.d5 0-0-0 24.c5 dc5 25.bc5 cd5? 26.cb6 Kb8 27.ba7 Ka8 28.Nc5 Qd6 29.Qb5?? Bc6+/– 30.Qb6 Rc8 31.a4 Ne4 32.Ne4 de4 33.Ba3 Bh6?? 34.Bd6+– (34...Bc1 35.Rc1 ed6 36.Rc6+–) 1–0. kolokwium – juanpacio (1715), internet, 2006.

3.e3 e5 4.a3 Ne7 5.Be2 Nbc6 (5...h4 6.d4 d6 7.de5 de5 8.Nc3=) 6.d4 ed4 7.b5 Ne5 8.Bd4 d6 9.f4 c5 (9...N5g6 10.Nf3+=) 10.bc6 (10.fe5 cd4 11.ef6 Qa5 12.c3 dc3 13.Bh5 g6 14.Qd6 c2 15.Nd2 Qc3 16.fe7 Qa1 17.Kf2 Bf5 18.Bg6 Bg6 19.Qg6 Kd7 20.Qc2 Be7+/–) 10...N5c6+= 11.Nf3 (11.Bh5 g6 12.Bf3 Nf5+=) 11...Nd4 (11...Nf5 12.Qd3+=) 12.Nd4 Qa5 13.Qd2 Qd2 14.Kd2 g6 15.Nc3 Bd7 16.Ne4+/– Nd5 17.Bc4+– g5?? 18.Bd5 gf4 19.ef4 Ke7 20.Rab1 Bh6 21.Rb7 Bf4 22.Ke2 Rhc8 23.Rf1 Be5 24.Nc6 Rc6 25.Bc6 Rd8 26.Ra7 Ke6 27.Bd7 Rd7 28.Rd7 Kd7 29.Nf6 Kc6 30.Nh5 Bh2 31.g3 Kb5 32.Rh1 Bg3 33.Ng3 Ka4 34.Rh4 Ka3 35.Kd2 d5 36.Kc1 d4 37.Rd4 Ka2 38.Ra4 1–0. Fournier,Frederic (2075) – athena(C) (2080), Active (1/3), 2005.

3.e3 e5 4.Be2 g6 5.Nf3 (5.a3 d5+=) 5...d5 (5...Bb4 6.Nh4 Kf7 7.f4 ef4 8.ef4=) 6.Nh4 (better 6.a3+=) 6...Bg4?? (better 6...Ne7=) 7.Ng6 (7.Bg4 hg4 8.Ng6 Rh6 9.Qg4 Ne7 10.Ne7 Ke7+–) 7...Rh6 (7...Be2 8.Qe2 Rh7 9.e4+–) 8.Bg4 hg4 9.Qg4 Bb4 1–0. DEFFM – GuestLCHJ, freechess.org, 2016.

3.e4 e5 4.a3 a5 +=.

3.e4 e5 4.a3 Ne7 +=.

3.e4 g5 4.h4 d6? (4...g4 5.a3+=) 5.Nc3 (5.hg5!? h4 6.Be2 e5 7.Bh5 Ke7+–) 5...c6 (5...g4 6.Bc4+=) 6.d4 (6.hg5 fg5 7.Rh5 Bg4 8.Qg4 Nf6 9.Rh8 Ng4+–) 6...Bg4 7.Be2 Qb6 (7...Be2 8.Nge2 d5 9.Ng3+–) 8.Bg4 hg4 9.Qg4 Qc7 (9...Na6!?+–) 10.Nf3 b5 (10...Nh6 11.Qe6 g4 12.Nh2+–) 11.d5 a5 (better 11.b4 Nh6 12.Qe6 Nf7+–) 12.0-0?? (better 12.Ng5 fg5 13.Nb5 cb5 14.Bh8+–) 12...ab4+= 13.Ne2 Nd7 (13...Nh6 14.Qe6 Nd7 15.Ng5+=) 14.Nfd4 (14.Ng5!? Nc5 15.Nf4+–) 14...Rh4 (14...cd5 15.ed5 Rh4 16.Qe6+=) 15.Qe6 (better 15.Qf5!? Nh6 16.Qg6 Nf7 17.Ne6=) 15...Nh6=+ 16.Nc6?? (better 16.dc6 Nc5 17.Qd5=+) 16...Ng4 (better 16...Nc5 17.Ned4 Ne6 18.Ne6 Qc8–+) 17.Ng3?? (better 17.g3 Nc5 18.Qf5+–) 17...Ra4?? (17...Nh6 18.Bd4 (18.Nb4?? Nc5–+) 18...Nc5 19.Bc5 dc5 20.Rfb1+=) 18.f3 (better 18.Nf5!? Rh7 19.Ncd4+–) 18...Ne3+– 19.Rfe1 White prepares e5 (19.Qg8 Ne5 20.Be5 fe5 21.Qg5 Nf1 22.Qh4 Ng3 23.Qg3+–) 19...Nc2= 20.Bf6?? (20.Qg8 Ne5 21.Rac1 Qb6 22.Kf1 Nf3 23.Qg6 Kd7 24.Qf5 Kc7 25.gf3+– (25.Qf3 Ne1 26.Ke1 Qg1 27.Nf1 b3 28.Nd4 Kb8+–)) 20...Ne1?? (20...Nc5 21.Qg8 ef6 22.e5 Ne1 23.ed6 Nf3 24.gf3+–) 21.Re1 (21.Be7 Nc5 22.Qg6 Kd7 23.Qf5 Ke8 24.Qf8 (24.Bf8 Nf3 25.gf3 Rf4 26.Qg5 Rf8+–) 24...Kd7 25.Bd6 Qc6 26.dc6 Kc6 27.Qc8 Kd6 28.Nf5 Ke5 29.Qc7 Kf6 30.Qg7 Ke6 31.Qe7) 21...Nf6–+ 22.Nf5 Rf4?? (better 22...Qd7 23.Qd7 Kd7 24.Nh4 gh4–+) 23.e5–/+ Nd7?? (23...Rf5 24.ef6 Qd7 25.Qd7 Kd7 26.fe7 Ke8 27.ef8N Kf8–+) 24.Nd6 (24.Qg6) 24...Qd6+– 25.ed6 Ra2 26.Qg6 (26.Qg8 Ne5 27.de7 Rg2 28.Kg2 Kd7 29.e8Q Kd6 30.Qb8 Kc5 31.Rc1 Nc4 32.Qa7 Kd6 33.Qe6) 26...Rf7 27.de7 Be7 (27...Ra8 28.Qg8 Ne5 29.ef8Q Kd7 30.Qd8 Rd8 31.Qd8) 28.d6 (28.Re7 Kf8 29.Qf7) 28...Kf8 (28...Re2 29.Re2 Kf8 30.Re7 Ne5 31.Qh6 Kg8 32.Re8 Rf8 33.Rf8) 29.de7 Ke8 30.Qg8 Nf8 31.ef8Q Kd7 32.Qff7 (32.Ne5 Ke6 33.Qgf7) 32...Kc6 33.Rc1 (33.Qc8 Kd6 34.Qfe6) 33...Kb6 (33...Rc2 34.Qd5 Kb6 35.Qb8 Ka6 36.Qdb5) 34.Qb8 Ka6 35.Qfa7 (35.Qa2) 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.h4 g6 4.e4 d6 (4...e5 5.a3=) 5.Bb5 (5.Nf3 e5+=) 5...c6= 6.Bc4 e6 (6...e5 7.Nc3=) 7.d4 (7.Nf3 e5+=) 7...b5 (7...d5 8.ed5 ed5 9.Bd3 Bb4 10.c3 Qe7 11.Ne2=) 8.Bb3 Ne7 (8...d5 9.a3=) 9.Nf3 e5? (9...d5 10.Nbd2+=) 10.d5?? (better 10.de5 Ng8 11.ef6 Nf6 12.0-0+–) 10...Bb7 (10...Na6 11.a3 cd5 12.Nc3+=) 11.dc6 Bc6 12.c4 (12.Nc3 a5 13.a3 Na6+=) 12...Be4 (12...bc4 13.Bc4 Be4 14.Be5 fe5 15.Ng5=) 13.0-0 (13.Nc3 d5 14.cd5 Bf3 15.Qf3 Nf5+–) 13...Qb6 (13...bc4 14.Bc4 Bb7=+) 14.c5?? (better 14.Nc3 Bc6 15.cb5+–) 14...dc5–/+ 15.Nc3 Bf3 (better 15...Bc6 16.bc5 Qb7–/+) 16.Qf3+= Qc6 17.Bd5 (better 17.Ne4!? Bg7 18.bc5+–) 17...Nd5= 18.Nd5 Bg7 (18...cb4 19.Nf6 Kd8 20.Rfd1 Kc8 21.Rac1+–) 19.Rfe1 (better 19.bc5 Kf7 20.Be5+=) 19...Nd7?? (better 19...a5 20.Rac1 ab4 21.Rc5 Qc5 22.Nf6 Bf6 23.Qf6 Nd7 24.Qh8 Qf8 25.Re5 Ne5 26.Qe5 Qe7 27.Qh8 Qf8 28.Qe5 Qe7 29.Qh8 Qf8 30.Qe5=) 20.Bc1?? (20.Nf6 Qf6 21.Qa8 Qd8 22.Qa7 cb4 23.Rad1+–) 20...cb4?? (20...Nb6 21.Nb6 Qf3 22.gf3 ab6 23.f4–+) 21.Nb4?? (better 21.Nf6 Qf6 22.Qa8 Qd8 23.Qe4+–) 21...Qf3–+ 22.gf3 f5 (22...Rc8 23.f4–+) 23.Bg5 (23.Bb2 Rg8–+) 23...e4 (23...Rc8 24.Rac1 Kf7 25.Nc6–+) 24.fe4 (24.Rab1 Ne5 25.Rb3 a5–+ (25...ef3? 26.Nc6+–)) 24...Ba1 25.Ra1 (25.ef5 Ne5 26.Nc6 0-0 27.Ne7 Kg7 28.f6 Rf6 29.Bf6 Kf6 30.Nd5 Ke6 31.Nc7 Kd7 32.Na8 Nf3 33.Kf1 Ne1 34.Ke1 Kc6–+) 25...a5 (25...fe4 26.Re1 0-0 27.Re4–+) 26.Nd5 Rc8 (26...fe4 27.Nc7 Kf7 28.Nb5–+) 27.Ne7 (27.Re1!? Kf7 28.ef5–/+) 27...Rc5–+ 28.Ng6 Rg8 29.ef5 Rf5 30.Re1 Ne5?? (better 30...Kf7 31.Re7 Kg6 32.Rd7 Rc5–+) 31.Ne5+– (31.Re5?! Re5 32.Ne5 b4+–) 31...Rgf8? (31...Rg7+–) 32.Ng6 Kf7 33.Ne7 (better 33.Nf8 Kf8 34.f4+–) 33...Rf3 (33...Re8 34.Kg2 b4 35.Nf5 Re1 36.Nd6 Ke6 37.Nb7+=) 34.Re5 (34.Nc6 Ra3 35.Re7 Kg8+–) 34...Kg7 (better 34...Ra3!?+–) 35.Be3+– (35.Rb5?! Rf2 36.Be3 Ra2 37.Bd4 Kf7 38.Rf5 Ke8 39.Rh5 a4+–) 35...Rh3? (35...Kf6 36.Rb5 Ke7 37.Bc5 Ke6 38.Bf8 Rf8 39.Ra5+–) 36.Rg5 (36.Rh5!? Kf7 37.Kg2 Re3 38.Rh7 Kf6 39.fe3 Rd8+–) 36...Kf7 37.Ng6 (37.Nf5 Ke6 38.Kg2 Rf5 39.Kh3 b4+–) 37...Rc8 (37...Re8 38.Kg2 Rhe3 39.fe3 Re3 40.Nf4+–) 38.Ne5 (38.Kg2 Re3 39.fe3 Rc2 40.Kf3 Ra2 41.Ne5 Ke7 42.Rh5 Ke6+–) 38...Kf8? (38...Ke6 39.Nd3 Rh4 40.Nf4 Kd6 41.Rb5 Rg8 42.Kf1 Rgg4+–) 39.Rf5 (39.Kg2 Re3 40.fe3 Rc2 41.Kf3 Ra2 42.Ng6 Kf7 43.Nh8 Kf6 44.Rb5 a4 45.Rb6 Kg7+–) 39...Ke7 40.Bg5?? (better 40.Nf3 Rf3 41.Rf3+–) 40...Ke6+= 41.Rf3 Rf3 42.Nf3 Rf8? (better 42...Kd5=) 43.Nd4+– Kd5 44.Nb5 Kc5? (44...Rc8+–) 45.Be7 Kb5 46.Bf8 a4 (46...Kc4 47.Kg2+–) 47.a3 (47.Kg2!? Kb6+–) 47...Kc4 48.f4 (better 48.Kg2 Kd5 49.Kf3 Ke5+–) 48...Kd5 49.Kg2 Ke4 50.Bh6 Kf5 51.Kf3 Kg6 52.Bg5 (52.Ke4 Kh7 53.Bg5 Kg7 54.f5 Kg8 55.Ke5 Kg7 56.Ke6 Kh7 57.f6 Kg8 58.f7 Kg7 59.Bf6 Kf8 60.Be7 Kg7 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 52...Kg7 53.Ke3 Kg6 54.Ke4 Kf7 (54...Kg7 55.Ke5 Kg8 56.Ke6 Kf8 57.f5 Kg8 58.f6 Kh8 59.f7 Kg7 60.Be7 Kg6 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 55.Ke5 (55.Kd5 Kg6 56.Ke6 Kh7 57.f5 Kg7 58.f6 Kg8 59.f7 Kg7 60.Be7 Kg6 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 55...Kg7 (55...Ke8 56.Ke6 Kf8 57.f5 Kg7 58.f6 Kg8 59.f7 Kg7 60.Be7 Kg6 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 56.f5 Kf7 (56...Kg8 57.Ke6 Kg7 58.f6 Kg8 59.f7 Kg7 60.Be7 Kg6 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 57.f6 Kg8 58.Ke6 Kf8 (58...Kh8 59.f7 Kg7 60.Be7 Kg6 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 59.Kd7 (59.f7 Kg7 60.Be7 Kg6 61.f8Q Kh7 62.Qf7 Kh6 63.Bg5) 59...Kf7+– 60.Kc6 Kg6 61.Kb5 (61.Kd6 Kf7 62.Kd5 Ke8 63.Bd2 Kd8 64.Bh6 Kc7 65.f7 Kb6 66.Be3 Kb7 67.f8Q Kc7 68.Qf7 Kc8 69.Kc6 Kd8 70.Qd7) 61...Kf7 62.Ka4 Ke6 63.Kb4 Kf7 64.a4 Ke6 (64...Kf8 65.a5 Kf7 66.a6 Kg8 67.a7 Kf8 68.a8Q Kf7 69.Qd5 Kg6 70.f7 Kg7 71.Qf5 Kf8 72.Be7 Ke7 73.f8Q) 65.Kb5 Kf5 (65...Kf7 66.a5 Kf8 67.a6 Kg8 68.a7 Kf8 69.a8Q Kf7 70.Qd5 Kg6 71.f7 Kg7 72.Qf5 Kf8 73.Be7 Ke7 74.f8Q) 66.a5 (66.f7 Ke6 67.f8Q Kd5 68.Qf3 Kd6 69.Qf7 Ke5 70.Kc5 Ke4 71.Qd5) 66...Kg6 (66...Ke5 67.f7 Kf5 68.f8Q Kg4 69.Qf2 Kh3 70.Bf4 Kg4 71.Be5 Kh3 72.Qg3) 67.a6 (67.a6 Kf5 68.f7 Ke4 69.f8Q Kd3 70.Qf3 Kc2 71.Kc4 Kb2 72.Qb3 Ka1 73.Bf6) 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.e3 d6

4.Bb5 c6 5.Be2 h4 +=.

4.c4 Bg4 5.Nf3 Nh6 6.h3+/– Bd7 7.Be2 Nf7 8.a3 g5 9.0-0 c6 10.Nd4 e5= 11.Nb3 Na6 12.d3 Nc7 13.Bh5+/– Qc8 14.g4 Rh5= 15.gh5 Bh3 16.Re1 Nh6 17.f3 g4 18.N1d2 Qf5=+ 19.fg4 Ng4 20.Qf3+= Qh5 21.Ne4 0-0-0?? 22.Re2?? Bh6 23.Ng3 Qg5 24.Qf5+= Qf5 25.Nf5 Bg5 26.Nd2 d5 27.Nf3 Ne6 28.cd5 cd5 29.Ng5 Ng5=+ 30.Ne7? Kd7–+ 31.Nd5 Rh8 32.Rc1?? Nf3 (33.Kh1 Bf1 34.Rh2 Rh2#) 0–1. kostovist (1670) – juanpacio (1740), internet, 2006.

4.Bc4 d5 5.Be2 g6 6.f4=.

4.Bc4 Bg4 5.Nf3 Nh6 6.h3+= Bc8 7.Nd4 Nf7 8.Ne6 Qd7 9.c3 c6 10.e4+/– Na6 11.f4 d5 12.ed5 cd5 13.Ba6 ba6 14.Nd4 e5 15.fe5 Ne5 16.d3 a5=+ 17.b5 Bc5 18.a4= a6 19.Na3 Rb8 20.Qb3? Nd3–/+ 21.Kd2 Nf2 22.Rhe1–/+ Ne4 23.Kc2 Bd4 24.cd4 0-0?? 25.Re4+= Qf5 26.Rae1+/– Kh8 27.g4 Qe4? 28.Re4+– de4 29.Qe3 Bb7 30.Kb1 Bd5 31.gh5 Rfc8?! 32.h6 g5 33.Qf2 Rf8 34.Qf5 Rbd8 35.Qg6 Rd7 36.Nc2 Rdf7 37.Ne3 Be6 38.d5 (38...Rg8 39.Bf6 Rf6 40.Qf6 Kh7 41.de6 g4 42.Qf7 Kh8 43.e7 gh3 44.e8Q Re8 45.Qg7#) 1–0. kostovist (1605) – juanpacio (1690), internet, 2006.

4.Be2 g6 5.Nc3 Nh6 6.Nh3 c6 7.Nf4+/– Kf7 8.Bd3 f5 9.Nce2 e5 10.Bc4 Kf6 11.d4+/– Qb6 12.de5 de5 13.0-0 Nd7 14.Nc3 Kg7 15.Ne6 Kh7 16.Na4 Qb4 17.Qd7! Bd7 18.Ng5 (18...Kg7 19.Be5#) 1–0. Garfield85 (1740) – juanpacio (1735), internet, 2006.

2.Bb2 g5

3.c4 f6 (3...Nf6 4.e4=) 4.e3 d6 5.Qa4 (5.d4 e6+=) 5...c6 (5...Bd7 6.Qc2 Nh6 7.d4+=) 6.Bd4 (6.d4 Bf5+=) 6...b6 (6...e5 7.Bc3= (7.Ba7? Qd7–+)) 7.b5 (7.Bc3 e5+=) 7...c5 (7...Bb7 8.Bc3=) 8.Bc3 g4 (8...Bb7 9.d4+=) 9.Bd3 (better 9.Qc2 Bb7 10.Qg6 Kd7 11.h3+–) 9...Bg7?? (better 9...Bb7 10.f3 e5+=) 10.Bg6+– Kd7 (10...Kf8 11.Be4 Nc6 12.Bc6 Bd7 13.Ba8 Qa8+–) 11.Qc2 (11.Be4!? Qc7 12.Ba8 h4+–) 11...e6?? (11...Bb7 12.Ne2 e5 13.Ng3+–) 12.h3 (better 12.Be4!? Kc7 13.Ba8 Nd7+–) 12...f5?? (better 12...d5+–) 13.Bg7+– Ne7 14.Bh8 (better 14.hg4!? Rg8 15.gf5 Rg7+–) 14...Qh8 15.d4 (better 15.Nc3!? g3 16.Bf5 gf2 17.Kf2 ef5+–) 15...Ng6 16.g3?? (16.hg4!? cd4 17.Rh5 d3 18.Rh8 dc2 19.Rh7 Ne7+–) 16...h4? (better 16...cd4 17.Qb2 Bb7+=) 17.f4?? (17.Qc3+–) 17...hg3?? (better 17...Bb7 18.hg4 Bh1 19.gf5 Nf8=+) 18.Qg2+– d5 19.cd5 Bb7 20.hg4 Qg7 (20...Bd5 21.Nf3 Nh4 22.Rh4 Qh4 23.Nh4 Bg2 24.Ng2 fg4 25.Nc3+–) 21.de6 Kc7 (21...Ke8 22.Qh3 cd4 23.gf5 g2+–) 22.Nf3 (22.Qg3 cd4 23.gf5 Bh1 24.Qg6 Qh8+–) 22...Ne7?? (better 22...fg4 23.Qg3 Bf3 24.f5 Kc8+–) 23.Qg3 (better 23.g5 cd4 24.ed4 Bf3 25.Qf3 Qd4 26.Qa8 Qa1 27.Qa7 Kc8+–) 23...Nd5 (23...fg4 24.Nbd2 Nf5 25.Qg1 Bf3 26.Nf3 gf3 27.Qg7 Ng7 28.Rh7+–) 24.Ne5 (better 24.Ng5 Nf6 25.Rh4+–) 24...fg4 (24...Ne3 25.Qe3 Bh1 26.gf5 cd4 27.Qd4 Qg3 28.Kd1 Qh4+–) 25.f5 Qg5 (25...Kc8 26.Nf7 Qg8+–) 26.Nf7 Kc8 27.Ng5 (27.Rh8 Qd8 28.Rd8) 27...Nb4 28.Rh8 1–0. MARYMARY – Darrell, ChessWorld.net, 2012.

3.Bh8 f6 4.e3 d5 (4...g4 5.Bd3 Kf7 6.h3+–) 5.Qh5 Kd7 6.Qg4 (better 6.Qf7!? Nh6 7.Qd5 Ke8 8.Qd8 Kd8+–) 6...e6 7.c4 (7.h4 Nh6 8.Qh5 gh4 9.Qh4 f5+–) 7...dc4 (7...Nh6 8.Qh5 Nc6 9.Qg6+–) 8.Bc4 Qe7 9.Be6 (better 9.Nf3 Kd8 10.Nd4+–) 9...Qe6 10.Qe6 Ke6 11.Nf3 (11.a3 a5 12.b5 Nh6+–) 11...Be7 (11...Bb4 12.h4 gh4 13.Nd4 Kd6 14.Nc3+–) 12.Nc3 (12.h4 gh4 13.a3 a5+–) 12...Bf8 (12...Bb4 13.h4 gh4 14.Nd4 Kd7 15.Rh4+–) 13.0-0 (13.h4 gh4 14.Rh4 c6+–) 13...Ke7 (13...Bb4 14.Nd4 Kf7 15.Ne4+–) 14.Nd4 (14.Nd5 Kd6 15.Nf6 Nf6 16.Bf6 g4+–) 14...Kf7 (14...c6 15.Rfc1 Nd7 16.b5+–) 15.f3 (15.Nd5 Na6 16.b5 c5+–) 15...Kg6 (15...Bb4 16.Ne4+–) 16.Nd5 Kh7 (16...Na6 17.b5 c5+–) 17.Bf6 (17.Nc7 Bb4 18.Bf6 Nf6+–) 17...Nf6 (17...c6 18.Nc7 Nf6 19.a3+–) 18.Nf6 (18.Nc7 Bb4 19.Rfd1 Nc6 20.Nc6 bc6 21.Na8 Nd5+–) 18...Kh8 19.Ne4 (19.Nd5 Bd6 20.Nb5 Na6+–) 19...c6 (19...Bb4 20.f4 gf4 21.Rf4+–) 20.Ng5 (20.b5 Bg7+–) 20...a5 (20...Bb4 21.Ne4+–) 21.Rac1 (better 21.b5!? Bg7+–) 21...ab4 22.Nde6 (22.Rc2 Be7 23.f4 Kg8+–) 22...Ra2 23.Nf7 (better 23.Nf8 Kg7 24.Ra1 Ra1 25.Ra1+–) 23...Kg8 24.Nfg5?? (24.Nfd8 Rd2 25.Rfd1 Rd1 26.Rd1 Be7+–) 24...Bh6?? (24...Kh8 25.Nf8 Kg7+–) 25.h4 (25.Rcd1 c5+–) 25...Bg5 (25...Be6 26.Ne6 Rd2 27.f4+–) 26.Ng5 (26.hg5?! Be6 27.d4 b5+=) 26...Nd7 (26...Rd2 27.Rcd1 Rd7 28.Ne4+–) 27.g3 (27.d4 Nb6+–) 27...Nf8 (27...Rd2 28.f4+–) 28.Rc4 (28.d4 Ra3+–) 28...Rd2 29.Rb4 Rd5 (29...b5 30.Ra1+–) 30.e4 Rg5 (30...Ra5+–) 31.Rfb1 (better 31.hg5 b5 32.f4+–) 31...Rg7? (31...Rg3 32.Kf2 Rh3 33.Ra4+=) 32.e5 (better 32.Kf2!?+–) 32...Rg3+= 33.Kh2?? (better 33.Kf2 Rg7 34.Ra1+=) 33...Rf3–/+ 34.Rg4?? (34.Ra1 b5 35.Ra7 Rh3 36.Kg1 Re3–/+) 34...Kf7 (34...Bg4 35.Rb7 Ng6 36.Kg1–+) 35.h5?? (better 35.Re4–+) 35...Bg4 36.h6 (36.Rb7 Bd7 37.Kg2–+) 36...Rf2 (better 36...Rh3 37.Kg2 Rh6 38.Rb7 Ke6–+) 37.Kg3 Rg2 (better 37...Re2 38.Kg4 Re5 39.Rb7 Kg6–+) 38.Kg2–/+ Bf3?? (better 38...Be6 39.Rb7 Kg6–/+) 39.Kf3+– c5 (39...Kg6+–) 40.Rb7 Ke8 (40...Kg6+–) 41.Ke4 c4 42.Kd4 (42.Kd5 Ng6 43.e6 Ne7 44.Re7 Ke7 45.h7 Kf6 46.h8Q Kf5 47.e7 Kg4 48.e8Q Kf4 49.Qh4 Kf3 50.Qee4) 42...c3 43.Kc3 Kd8 44.Kd4 Kc8 45.Rf7 Kb8 46.Rf8 Ka7 (46...Kc7 47.h7 Kb6 48.Rf6 Kb5 49.h8Q Ka4 50.Qb8 Ka5 51.Qa7 Kb5 52.Rb6) 47.h7 (47.Kc5 Ka6 48.h7 Kb7 49.Kb5 Kc7 50.Rf7 Kd8 51.h8Q) 47...Ka6 (47...Kb7 48.Rf7 Kb6 49.h8Q Kc6 50.Qc8 Kb5 51.Rb7 Ka4 52.Qa8) 48.h8Q Ka5 (48...Kb5 49.Rb8 Ka4 50.Qg7 Ka5 51.Qa7) 49.Qh4 (49.Rb8 Ka4 50.Qg7 Ka5 51.Qa7) 49...Ka4 (49...Kb4 50.Rb8 Ka4 51.Qe7 Ka5 52.Qa3) 50.Ke3 (50.Kc5 Kb3 51.Rf2 Kc3 52.Qg3) 50...Ka3 (50...Kb5 51.Rb8 Kc6 52.Qd4 Kc7 53.Qd6) 51.Rb8 Ka2 52.Qa4 1–0. sirgeshdb (1685) – Sallymoon, lichess.org, 2020.

2.Bb2 g6??

3.Nf3 Rh7 4.Nc3 Bg7 5.e4 e6 6.b5 b6 (6...g5 7.h3+=) 7.Bd3 a6 8.a4 ab5 9.ab5 Ra1 10.Qa1 Bb7 11.Qa7 Qc8 12.0-0 Ne7 13.Qa3 Bf8 14.Ng5 Rg7 (14...Rh6 15.Qb3+–) 15.Na4+– Rg8 16.Nh7 Bg7 17.Bg7 Rg7 18.Nf6 Kf8 19.e5 c6?? (better 19...h4+–) 20.Qd6 cb5 (20...Qd8 21.Qb8!! Qb8 22.Nd7 Kg8 23.Nb8 cb5 24.Bb5 Nd5+–) 21.Nb6 Qc6 22.Qb8 Nc8 23.Nbd7 Qd7 24.Nd7 (24.Nd7 Ke7 25.Qc7 Rh7 26.Nf6 Kf8 27.Qd8 Kg7 28.Qg8 Kh6 29.h4 Rg7 30.Qh8 Rh7 31.Qh7) 1–0. Janek – Vesely, internet, 2016.

3.Bh8+– f6 4.e3 e5 5.c4 1–0. GuestSLTM – GuestBQWD, freechess.org, 2017.

3.Bh8 f6 4.e3 Nh6 5.Bd3 f5 6.Nf3 Nc6 (6...Nf7 7.Bb2 e5 8.e4+–) 7.Nh4 (7.b5!? Nf7 8.Bb2 Nb4+–) 7...Kf7 8.b5 Nb4 9.Bc4 e6 10.Ng6! Kg6 11.Be2 Qg5 (11...Kh7 12.Bb2 a6 13.ba6+–) 12.h4 Qg2 (12...Qe7 13.Bh5 Kh7+–) 13.Bf3 Nc2 14.Ke2 Qh1 15.Qh1 (15.Qc2 Qh4 16.Be5 Bd6 17.Bd6 cd6–/+) 15...Na1 (15...d5 16.Qc1 Na1 17.Qc7+–) 16.Bb7 Bb7 (16...Rb8 17.Bc8 Bd6 18.Ba1 Rc8 19.Qg1 Ng4 20.f3+–) 17.Qb7 Re8 18.Qc7 Re7 (18...e5 19.Be5 Nc2 20.d4 Ne3 21.Qd7+–) 19.Ba1 d5 20.Qg3 Kf7 (20...Kh7 21.Bd4+–) 21.Qg5 Ke8 22.Qh5 Kd7 23.Qg6 Kc7 24.Bf6 Rf7 25.Bg5 Kb6 26.Qe6 Kb5 (26...Bd6 27.Qd6 Ka5 28.Bd8 Kb5 29.Na3 Ka4 30.Qa6 Kb4 31.Qa5) 27.Nc3 Kb4 28.Qd5 Rc7 (28...Rb7 29.Qb7 Kc5 30.Qd5 Kb4 31.Qb5 Ka3 32.Qb3) 29.Qb5 Ka3 30.Qb3 1–0. DEFFM – GuestLSJN, freechess.org, 2020.

3.Bh8+– f6 4.g3 Kf7 5.h4 e5 6.Bg2 Bb4 7.f4 Ne7 8.c4 Qh8+= 9.e3 d6 10.Qb3 Nec6 11.c5 Be6 12.Qc2 Bc5 13.Qb2 b6 14.Qb5 a6–/+ 15.Qd3 Nb4–+ 16.Qc3 Bd5?? 17.Bd5+/– Nd5 18.Qb3 c6 19.Nf3 Ke7 20.e4 Nc7=+ 21.d3 ef4 22.gf4= f5 23.Ng5?? Qa1–+ 24.Ke2 Qd4 25.Qc3 Qf2 26.Kd1 Qf4 27.Qg7 Ke8 28.Qg6 Kd8 29.Qh5?? Qg4 30.Qg4 fg4 31.h5 Ke8 32.h6 Bd4 33.h7 Nb5?? 34.Nd2 Ke7 35.Nb3? Bg7 36.h8Q Bh8 37.Rh8 Nc3 38.Kc2 Kf6 39.Nh7? Ke7?? 40.Kc3+– g3 41.Rg8 Ra7?? 42.Rb8 b5 43.Na5 Rc7 44.Rg8 Ke6 45.Rg3 Rh7 46.Rg6 Kd7 47.Rg8 c5 48.Ra8 Rh3 49.Ra6 c4 50.Kd4?? cd3 51.Nb3+– Kc7 52.e5 Rh6?? 53.Kd3 Re6 54.Ke4 Re5?? 55.Kd4 Kd7 56.Nd2 Kc7?! 57.Nf3 Rc5 58.Nd2 Rc2?? 59.Kd3 Rc6? 60.Ra3 d5? 61.Kd4 Kd6 62.Rb3?? Rc2= 63.Kd3 Rc5?? 64.Rb4+– Kc6 65.Nb3 Rc4 66.Na5 Kc5 67.Nb3?? Kb4–+ 68.Nd2 Rc3 69.Kd4 Rc5 70.a3= Ka3 71.Kc5 b4 72.Kd5 b3 73.Kc4 b2 74.Kc3 Ka2 75.Kc2 Ka1 76.Nb1 Ka2 77.Nc3 Ka3 78.Nb1 Ka2 79.Kc3?? Kb1–+ 80.Kd2 Ka2 81.Kc2 b1Q 82.Kd2 Kb2 83.Ke2 Qc2 84.Ke3 Kc3 85.Kf3 Qd3 86.Kf4 Kd4 87.Kg4 Qe4 88.Kg5 Ke5 89.Kh5 Kf6 90.Kh6 Qg6# 0–1. yeatond – dwitman (1610), net–chess.com, 2007.

2.Bb2 h4

3.b5 b6 4.e3 Bb7 5.Nf3 Rh5 (5...h3 6.g3=) 6.a4 (6.Be2 h3+=) 6...e6 (6...a6 7.Ne5 Rh6 8.Bc4+=) 7.h3 (7.Be2 a6+=) 7...Nf6 (7...a6 8.Bd3+=) 8.Be2 Nd5 (8...a6 9.0-0+=) 9.0-0+– Ne7 (9...a6 10.d3+–) 10.c4 (10.Nc3 a6+–) 10...Nf5 (10...a6 11.d3+–) 11.d3 (11.Nd4 Qg5 12.Bf3 Bf3 13.Nf3 Qh6+–) 11...g6 (11...a6 12.Nd4 Rg5 13.Bf3+–) 12.e4 (12.a5 ba5 13.Nc3 a6+–) 12...Ng7 13.Nh2 (13.Ne5 Rh7 14.a5+–) 13...Rg5 (13...Rh7 14.Ng4 Be7 15.a5+–) 14.f4 (14.Ng4!? f5 15.Nf6 Kf7+–) 14...Rg3 15.Rf2 Qe7 (15...d5 16.Nd2 de4 17.Ne4 Be4 18.de4 Qd1 19.Rd1 c6+–) 16.Nf1 Qc5 (16...f5 17.Nbd2+–) 17.d4 (17.Bf6 a6+–) 17...Qc4 1–0. GuestJRJJ – GuestBTJJ, freechess.org, 2018.

3.c4 d5 4.Qa4 (4.cd5 Qd5 5.Nc3 Qd6+=) 4...Bd7= 5.b5 b6 (5...e6=) 6.c5?? (better 6.cd5!? a6 7.Nc3+–) 6...Nf6 (better 6...bc5!? 7.e4 c6–/+) 7.c6= Bf5 8.Bf6 (8.Nf3 h3=) 8...ef6 9.e4 (9.Nf3!?=) 9...Be4–/+ 10.h3 (10.Nc3 Bf5–/+) 10...Qd6 11.Ne2 f5 12.f3 Bd3 13.f4 (13.Kd1 Kd8–/+) 13...Qe6 (13...Bc4 14.Nbc3–/+) 14.Nbc3 (better 14.Kd1 Be4 15.Nd4=+) 14...d4?? (better 14...Bc5 15.0-0-0 Qd6–/+) 15.Qd4= Bc4?? (better 15...Be2 16.Be2 a6+=) 16.0-0-0?? (16.d3!? Nc6 17.Qc4 Nb4+–) 16...Bc5?? (better 16...a6 17.Qf2 ab5–/+ (17...Ba2?! 18.Nd4 Qf6 19.Na2=)) 17.Qg7+– Ba3? (better 17...Rh6 18.Qg8 Ke7 19.Qg5 Ke8+–) 18.Kc2 Rf8 (18...Qh6 19.Qe5 Be6 20.Qc7 0-0+–) 19.Nd4 Qg6 (19...Ba2 20.Ne6 Be6 21.d4+–) 20.Re1 Be7 (20...Kd8 21.Qg6 fg6 22.Bc4+–) 21.Qe5 (better 21.Qg6 fg6 22.Bc4 Na6+–) 21...Be6 22.Qc7 Qf6 (22...Na6 23.Qb7 Nc7 24.Qc7 Rd8 25.Ne6 fe6+–) 23.Bd3 (23.Nd5 Rh8 24.Nf6 Kf8 25.Re6 Nc6 26.Nd7 Kg8 27.Qc6 Rh6 28.Qa8 Kh7 29.Rh6 Kh6 30.Qh8 Kg6 31.Ne5) 23...Qd4 24.Qb7 f6 (24...Bd6 25.Bf5 Kd8 26.Be6 fe6 27.Re6 Bc7+–) 25.Qa8 (better 25.Re6 Nd7 26.cd7 Qd7 27.Qa8 Kf7 28.Qf3 Qe6 29.Qh5 Kg7 30.Bf5 Qf5 31.Qf5+–) 25...Kf7 26.c7 (better 26.Qb7 Qd6 27.Kd1+–) 26...Nc6 (26...Na6 27.Qf3 Nb4 28.Kd1 Nd3 29.Qh5 Kg7 30.Re6 Bd6+–) 27.Qc6 Kg6 28.Qe6 Bb4 29.Qf5 Kf7 (29...Kg7 30.Qh7) 30.Qg6 1–0. MARYMARY – jerb, ChessWorld.net, 2019.

3.c4 h3 4.Nh3 d5 5.cd5 Bh3 6.gh3 Qd5 7.Rg1 e5 (7...Qd6!?+=) 8.Bg2+– Qb5 9.Qb3 (9.Na3 Qb4 10.Bc3 Qb6+–) 9...Nc6 (9...c6 10.Bc3 Nd7 11.Na3+–) 10.a4 Qb6 (10...Qb4 11.Bc6 bc6 12.Qb4 Bb4 13.Be5+–) 11.Bc6 (11.a5 Qb5 12.Qa4 Qa4 13.Ra4 Nd4+–) 11...Qc6+– 12.Be5 0-0-0 (better 12...f6 13.Bb2 Ne7+–) 13.Bg7?? (better 13.Nc3 Qd7 14.Nb5 Qd2 15.Kf1+–) 13...Bg7–+ 14.Rg7?? (better 14.Ra2 Rd6 15.d3–+) 14...Nf6 (14...Qh1 15.Rg1 Qg1) 15.e3 (15.f3 Qc1 16.Qd1 Qc4=) 15...Ne4 (15...Rh3 16.Qf7 Rh2=+) 16.Qf7 (better 16.d4+–) 16...Rhf8–/+ 17.Qe7?? (17.Qc7 Qc7 18.Rc7 Kc7–/+) 17...Rf2 (17...Qc1 18.Ke2 Rf2) 18.Rf7?? (better 18.Nc3 Nc3 19.Qc7 Qc7 20.Rc7 Kc7 21.Kf2 Rd2 22.Kf3–/+) 18...Rh2 (18...Qc1) 19.Rf8 (19.Qc7 Qc7 20.Rc7 Kc7 21.Ra2 Rh1 22.Ke2 Rb1 23.Rc2 Kd6 24.b5–+) 19...Rhd2 (19...Qc1) 20.Rd8 (better 20.Nd2 Qd7 21.Qd7 (21.Qe4 Qd2 22.Kf1 Rf8 23.Kg1 Rg8 24.Kh1 Qd7=+) 21...Kd7 22.Rd8 Kd8 23.Ne4+–) 20...Rd8–+ 21.Na3 (21.Nd2 Nd2 22.Qd8 Kd8 23.Kd2 Qg2 24.Kd3 Qh3 25.b5–+) 21...Qc3 22.Ke2 Qa1 23.Kf3 (23.Qe6 Kb8 24.Qe4 Qd1 25.Kf2 Rf8 26.Qf4 Rf4 27.ef4 Qa4 28.Nc4 Qc2 29.Kg3 Qc4 30.Kg4–+) 23...Qa3 (better 23...Nd2 24.Kf4 Qf1 25.Ke5–+) 24.Qe6 (24.Qe4 Qa4 25.Qf5 Kb8–+) 24...Kb8 25.Qe4 (25.Ke4 Qb4 26.Kf3 Rf8 27.Ke2 Qa4–+) 25...Rc8 (better 25...Rf8 26.Kg4–+) 26.Kg4 (26.Qe7 a5–+) 26...Qa4 27.h4 (27.Qe7 Re8 28.Qf7 Qb4 29.Qf4 Rg8 30.Kf3 Rf8–+) 27...Qc6 (better 27...Qd1 28.Kg5 Rg8 29.Kf6 Qd6 30.Qe6 Rf8 31.Kg7 Qe6 32.Kf8 Qf6 33.Ke8 Qh4–+) 28.h5 (28.Qc6 bc6 29.Kf5–+) 28…Qe4 (28...Qe4 29.Kg5 Qf3 30.e4 Rg8 31.Kh6 Qf6 32.Kh7 Rh8) 0–1. RichardSommer (2080) – ildar_80 (2080), lichess.org, 2020.

3.e3 b6 4.b5 Bb7 5.c4 d5 (5...a6!?=) 6.cd5+= Qd5 7.Nc3 Qg5 (7...Qd6 8.Qb3+=) 8.Nf3 Qg6 9.Ne2 (9.Ne5 Qf6 10.d4 h3+–) 9...Nd7 10.Nf4 Qf5 (10...Qd6 11.d4+=) 11.Bd3 (11.Rc1 e5 12.Rc7 Be4+–) 11...Qc5 12.Qb3 Bf3?? (better 12...e6+=) 13.Qf7+– (13.gf3?! Qd6 14.Be4 Nc5+–) 13...Kf7 (13...Kd8 14.Ne6 Kc8 15.Qf3 Rb8 16.Nc5 bc5+–) 14.Bg6 1–0. DEFFM – jamique, freechess.org, 2018.

3.e3 d6 4.c4 e5 5.b5 b6 (5...Nf6 6.d4 e4 7.d5=) 6.a4 (6.d4 ed4 7.Qf3 c6 8.Bd4 Ne7+=) 6...a5 (6...a6 7.d4 e4 8.Nc3=) 7.Nf3 h3 8.gh3 Bh3 9.Bh3 Rh3 10.Nc3 Qc8 (10...Nf6!?=) 11.Ng5+– Qb7 12.Nd5 Rh6 13.Qf3 Threatening mate: Qxf7 13...c6 14.Qf7?? (14.bc6 Nc6 15.Nf7+=) 14...Qf7=+ 15.Nf7 Kf7 16.Nc7?? (better 16.Nb6 Ra7 17.Bc3=+) 16…Ra7–+ (16...Ra7 17.Na6 Na6 18.ba6 Ra6–+) 0–1. RichardSommer (2155) – mircogc (2115), lichess.org, 2020.

3.e3 d6 4.c4 Nf6 5.b5 b6 (5...e5!?=) 6.Qf3+= d5 (6...c6!? 7.Bf6 ef6 8.bc6 Qc7+–) 7.Bf6+– gf6 (7...ef6 8.Nc3 a6 9.cd5+–) 8.cd5 Bb7 9.Nc3 e6 10.Bc4 Bb4 (10...Nd7 11.d4+–) 11.Nge2 (11.Rb1 Bc3 12.dc3 Nd7+=) 11...Nd7 12.d4 Qe7 13.a3 (13.Rc1 h3+–) 13...Ba5 (13...Ba3!? 14.0-0 Qb4+–) 14.0-0+– 0-0-0 15.e4 (15.Rfc1 h3 16.g3 Kb8+–) 15...Rhg8 (15...h3 16.g3+–) 16.Rfc1 Rg6? (better 16...f5 17.ef5 Nf6+–) 17.de6 fe6 18.Nf4 Rg7 (18...Rdg8 19.Ng6 Rg6+–) 19.Ne6 (worse 19.Be6 Kb8+–) 19...f5 (19...h3 20.g3+–) 20.Qf5 (20.Qf4 Nf6 21.Qf5 Rg2 22.Kg2 Bc3+–) 20...Rf7 (20...h3 21.g3 Re8 22.Ng7 Qg7 23.e5+–) 21.Nd5 Bd5 22.Qd5 Nb8 (22...Rf6+–) 23.Nd8 Qd8 (23...Rf6 24.Qb7 Kd7 25.Nf7+–) 24.Qf7 1–0. GuestWYKK – jamique, freechess.org, 2019.

3.e3 e6 4.b5 Qg5 (4...d5 5.Nf3=) 5.Nf3+= Qg4 (5...Qe7 6.Be2+=) 6.h3+– Qb4 7.Ba3 (better 7.Bc3 Qa4 8.Bd4+=) 7...Qa3?? (better 7...Qa5 8.Bf8 Kf8+=) 8.Na3+– Ba3 9.c4 b6 10.Bd3 (10.Qb3 Bd6+–) 10...Bb7 11.Qb3 Bd6 12.0-0-0 (12.Be2!? a6+–) 12...Bf3 (12...a6 13.Rdg1+–) 13.gf3 a6 14.Be4 Ra7 15.a4 (15.Rdg1 ab5 16.cb5 Bf8+–) 15...ab5 16.cb5 Nf6 17.Bc2 Rh5 18.f4 (18.d4 c6+–) 18...Nd5 (18...c6 19.bc6 Nc6 20.Rdg1+–) 19.Rhg1 (better 19.Rdg1 Bf8+–) 19...g6?! (19...Bf8+–) 20.Rg6! Ke7 (20...fg6 21.Bg6 Double attack) 21.Rg7 (21.Rg5 Rg5 22.fg5 c6+–) 21...Nb4 22.Bg6 Rc5 23.Kb1 Kf6 24.Rf7 (24.Qb2 e5 25.d4 Kg7 26.dc5 bc5 27.fe5 Be7+–) 24...Kg6 25.Rd7!! Nd7 (25...Nd7 26.Rg1 Double attack) 26.Qe6 (26.Qb4?? Rc1!? 27.Rc1 Bb4–+) 26...Nf6 (26...Kg7 27.Rg1 Rg5 28.Rg5 Kh7 29.Qf7 Kh6 30.Qg6) 27.Rg1 Kh7 (27...Rg5 28.Rg5 Kh7 29.Qf7 Kh6 30.Qg6) 28.Qf7 (28.Qf7 Kh8 29.Qg7) 1–0. GuestPJFV – GuestJWQX, freechess.org, 2019.

3.e3 e6 4.h3 Rh6 5.b5 Rg6 (5...d5!?+=) 6.Bd3 Rg2 7.Nf3 (7.Nc3+–) 7...Nh6 (7...f5!?+–) 8.Kf1+– Rg5 (8...Rg6 9.Bg6 fg6 10.Ke2+–) 9.Ng5 Qg5 10.Rg1 Qe7 (10...Qc5 11.a4+–) 11.Qf3 a6?! (11...f6+–) 12.Bg7 ab5 13.Nc3 (better 13.Qf4 Ng8 14.Nc3+–) 13...Ra5 (13...c6 14.Ne4 Bg7 15.Rg7+–) 14.Nb5 (14.Qf4 d6 15.Qh6 Nd7+–) 14...Na6 (14...d6+–) 15.Na7 Bg7 (15...Rg5 16.Bf6 Rg1 17.Kg1+–) 16.Rg7 (16.Nc8?! Qf8 17.Rb1 Nc5+–) 16...Qf8 (16...Rf5 A) 17.Nc8?! Qf6 (17...Rf3? 18.Ne7 Ke7 19.Be4+–) 18.Bf5 Qa1 19.Ke2 Qg7+=; B) worse 17.Bf5 Qf6 18.Rh7 d5 19.Rh6 Qh6 20.Nc8 ef5 21.Qf5 Qe6 22.Qe6 fe6+–; C) 17.Qg2 Qf8 18.Nc8+–) 17.Rh7 (17.Nc8?! Qg7 18.Rb1 Nc5=) 17...Nc5 (17...Nf5 18.Nc8 Qg8 19.Rh5+–) 18.Nc8 Nd3 (18...Ng8 19.Rh8 Nd3 20.Qg2+–) 19.cd3 Rb5 (19...Rg5 20.Rc1 Nf5 21.Qf4+–) 20.Qf4 Kd8 21.Qh4 Kc8 22.Rh6 Qh6 23.Qh6 c5 24.Qf8 Kc7 25.Qf7 (25.Rc1 b6 26.d4 Kc6+–) 25...Rb1 26.Rb1 (26.Rb1 Kc6 27.Qf3 d5 28.Qf7 b5 29.Qe6 Kb7 30.Qd7 Kb6 31.Rb5 Ka6 32.Qb7) 1–0. DEFFM – GuestQVPJ, freechess.org, 2019.

3.e3 e6 4.Nh3 Nf6 5.b5 (5.a3 d6=) 5...g6 (5...d6 6.d4=) 6.Bd3 (6.Be2 d6+=) 6...Rh5 (6...Bg7 7.0-0=) 7.Be2 Rf5 8.Bd3 (8.e4 Ne4 9.Bd3 d5+=) 8...Rd5 (8...Rh5!?=) 9.0-0 (better 9.e4 Rh5 10.e5+–) 9...b6?? (better 9...Rh5+=) 10.Qf3+– Be7 (10...Bg7 11.c4 g5 12.Ng5 Rd3 13.Qa8+–) 11.c4 Rd3 (11...g5 12.Ng5 (worse 12.cd5 g4 13.Qf4 gh3+–) 12...Rd3 13.Qa8+–) 12.Qa8 a5 (12...Na6+–) 13.Qb8 Ne4 (13...e5 14.f3 d5 15.Nf2+–) 14.Nf4 Rd2 15.Nd2 Nd2 16.Rfc1 g5 (16...Ne4 17.Qa7+–) 17.Nd3 (17.Nh5 Ne4+–) 17...g4 (17...d6 18.Rc2 Ne4 19.Qa8+–) 18.c5 (18.Qa8 f5 19.c5 bc5 20.Nc5 d5 21.Qc6 Bd7 22.Nd7 Qd7 23.Qa8 Qd8+–) 18...bc5 19.Nc5 Bc5 (19...g3 20.fg3 hg3 21.b6 gh2 22.Kh1+–) 20.Rc5 c6 (20...d5+–) 21.Rh5 Ke7 22.Bf6! Kf6 23.Qf4 Ke7 24.Qg5 Kd6 (24...f6 25.Qc5 Ke8 26.Rh8 Kf7 27.Rh7 Kg8 28.Qh5 Nf3 29.gf3 Qe8 30.Rh8 Kg7 31.Qh7) 25.Qe5 Ke7 26.Qc5 d6 27.Qg5 Kd7 28.bc6 Kc7 29.Qa5 (29.Qa5 Kc6 30.Qb5 Kc7 31.Rc1 Nc4 32.Rc4) 1–0. DEFFM – GuestNNLR, freechess.org, 2018.

3.e3 f6 4.b5 g5 (4...d5 5.c4=) 5.Be2 (5.Bd3 Nh6+=) 5...d6 (5...Nh6 6.Nc3+=) 6.Bh5+– Rh5?? (better 6...Kd7+–) 7.Qh5+– Kd7 8.Qg6 (better 8.Qh7 Bh6 9.Bf6+–) 8...e5?? (better 8...Nh6+–) 9.Qg8 Qe7 (9...a6 10.ba6 Na6 11.Nc3+–) 10.Nc3 (better 10.d4 Ke8+–) 10...a6 (10...Kd8 11.Qd5+–) 11.Nd5 Qe8 (11...Qg7 12.Qg7 Bg7+–) 12.Nf6 Ke7 13.Ne8 Ke8 14.Nf3 d5 15.Ne5 Nd7 (15...c5 16.b6 Bd7 17.Qf7 Kd8 18.Qf8 Be8 19.Nf7 Kd7 20.Qd6 Kc8 21.Qc7) 16.Qf7 (16.Qe6 Be7 17.Ng6 ab5 18.Qe7) 16...Kd8 17.Ng6 (17.Nd7 Bd6 18.Bf6 Be7 19.Qe7) 17...Ne5 18.Qf8 Kd7 19.Qe7 1–0. DEFFM – GuestTKFT, freechess.org, 2016.

3.e3 h3 4.Nh3 d5 5.Nf4 a5 (5...Nf6 6.c4+–) 6.b5 Nf6 7.a4 (7.c4 e6+–) 7...c5 (7...Nbd7 8.Bd3 Rh6 9.Bf5+=) 8.c4 d4 9.d3 (better 9.Nd3!?+–) 9...e5= 10.Nd5 (10.Nh3 Be7=) 10...Nd5 11.cd5 Qd5 12.Be2? (better 12.Nd2=) 12...b6?? (better 12...Qg2 13.Bf3 Qg6–/+) 13.Bf3+– Qd7 (13...Qd6 14.Ba8 Bf5 15.e4+–) 14.Ba8 Bb7 (14...Qd8 15.Qf3+–) 15.Bb7 Qb7 16.0-0 Nd7 17.Qg4 (17.Nd2 Qd5 18.Nc4 Kd8+–) 17...Nf6 Black plans e4 (17...Qd5 18.ed4 ed4 19.Na3+–) 18.Qf5 (18.Qg3 Qd5+–) 18...Bd6 (18...Rh5 19.Qf3 Qf3 20.gf3+–) 19.Re1 (19.Nd2 Qd7 20.Ne4 Ke7 (20...Qf5?? 21.Nd6 Kf8 22.Nf5+–) 21.Nd6 Kd6+–) 19...e4 (19...Rh5 20.Qf3 Qf3 21.gf3+–) 20.g3 (better 20.ed4 Bh2 21.Kf1 Bc7 22.de4 g6+–) 20...ed3?? (20...Rh5 21.Qh5 Nh5 22.ed4 Kd7 23.de4 c4+–) 21.Qd3 (better 21.ed4!? Kf8 22.dc5 Bc5 23.Bf6 gf6 24.Qf6 Rh5 25.Qd8 Kg7 26.Qd3 Rd5+–) 21...Ng4 22.ed4 Kf8 (22...Be7 23.dc5 Qh1 24.Kh1 Nf2 25.Kg1 Nd3 26.Bg7 Ne1 27.Bh8 Bc5 28.Kf1+–) 23.Qe4 (better 23.dc5 Qh1 24.Kh1 Nf2 25.Kg2 Nd3 26.Rd1 Nb2 27.Rd6+–) 23...Qd7 (23...Qe4 24.Re4 Nf2+–) 24.dc5 (24.Qa8 Bb8 25.Qb8 Qd8 26.Qd8) 24...Bc5 (24...Bc7 25.cb6 Bb6 26.Qa8 Bd8 27.Nc3 Nf2 28.Rad1 Nh3 29.Kf1 Qf5 30.Kg2 Nf4 31.Kh1 Rh2 32.Kh2 Qh3 33.Kg1 Qg3 34.Kf1 Qh3 35.Kf2 Qh2 36.Ke3 Ng2 37.Kd3 Ne1 38.Re1 Qd6 39.Kc2+–) 25.Nc3 (25.Qa8 Qe8 26.Qe8) 25...Bf2 (25...Qc8 26.Ba3 Ba3 27.Ra3 Rh6 28.Qe7 Kg8 29.Qe8 Qe8 30.Re8 Kh7+–) 26.Kg2 (better 26.Kf1 Qc8 27.Qe7 Kg8 28.Qe8 Qe8 29.Re8 Kh7 30.Rh8 Kh8 31.h3+–) 26...Rh2 27.Kf3 (27.Kf1 Ne3 28.Re3 Qh3 29.Ke2 Be3 30.Kd3 Qd7 31.Nd5 Bc5+–) 27...Be1?? (27...f5 28.Qa8 Kf7=) 28.Re1?? (28.Qa8 Ke7 29.Re1 Kf6 30.Nd5 Kg5 31.Bc1 Kg6 32.Ne7 Kf6 33.Qc6 Qc6 34.bc6 Ne5 35.Re5 Ke5 36.c7+–) 28…Rf2 0–1. RichardSommer (1970) – ildar_80 (1960), lichess.org, 2020.

3.e4 d6 4.Nf3 e5 5.d4 Nc6 (5...ed4 6.Nd4 Nc6 7.h3+=) 6.b5 (6.de5 Ne5 7.Ne5 de5 8.Qd8 Kd8 9.Be5 Bb4 10.c3 Bf8+=) 6...Nd4+= 7.Nd4 ed4 8.Bd4 Qg5 (8...Nf6 9.Nc3+=) 9.Nc3 Nf6 10.Be3 (10.Qd2 Qd2 11.Kd2 Be6+=) 10...Qg6= 11.f3 Be6 (11...Be7 12.Qd2=) 12.Qd2 0-0-0 (12...Be7 13.Ne2 Nh5 14.Nd4=) 13.Bd3 (13.Ne2 Nd7+=) 13...Qh5= 14.Ne2 (better 14.Bd4!?=) 14...d5=+ 15.e5 d4 (better 15...Qe5 16.Bd4 Qd6=+) 16.ef6? (better 16.Bd4 Rd4 17.Nd4 Qe5 18.Be2=+) 16...de3–+ 17.Qe3 Bb4 (17...Bc5 18.Qf4 g6 19.Rd1–+) 18.Kf1? (better 18.c3!? Bc5 19.Nd4 gf6 20.0-0–/+) 18...Bc5–+ 19.Qf4 g5 20.Qe5 Rd5 21.Qc3 Re8 (better 21...h3 22.g4 Qh4–+) 22.Re1?? (better 22.h3 Bd6 23.Qa5–/+) 22...Qf3!! 23.gf3 (23.gf3 Bh3) 23...Bh3 0–1. Xiong,Jeffery (2650) – Vachier_Lagrave,Maxime (2795), chess.com Speed 1m+1spm, 2017.

3.e4 e6 4.a3=.

3.e4 e6 4.Nf3=.

3.e4 Nf6 4.e5 Nd5 5.b5 c5 6.c4 Nf4 7.g3 Nd3?? 8.Bd3+– d5 9.cd5 Qd5 10.Qf3 Qf3 11.Nf3 hg3 12.fg3 Bg4 13.Be2 Bh3 14.Bf1 Bg4 15.Bg2 e6 16.0-0 Nd7 17.d4 cd4 18.Bd4 Bc5 19.Bc5 Nc5 20.Nbd2 0-0 21.Ne4 Ne4+= 22.Nh4 Nd2 23.Rf2+/– Nc4 24.a4 Rfd8 25.h3+= Bf5 (26.Nf5 ef5+/–; 25...Bd1 26.Bb7 Rab8 27.Bf3=). sculp – EastCoastAustin, Live Game Caissa's Web, 2006.

3.e4 h3 4.g4 a5 5.b5 c6 6.a4 d5=+ 7.Bh3 de4 8.Be5? Nd7–/+ 9.Bg3 Qb6 10.g5= cb5 11.Bd7 Bd7–/+ 12.ab5 Bb5 13.Qg4? e6 14.Qe4?? Bc6 15.Qd3 Qb2 16.Qb3 Qc1 17.Ke2 Bh1 18.Qb7 Bb7 19.Ra5 0-0-0 20.Rc5 Kd7 21.Rc3 Qb1 22.Rd3 Ke8 23.Rd8 Kd8 24.Nf3 Ba6 25.Ke3 Qc2 26.Ne5 Bc5 27.Kf3 Bb7 28.Kg4 Qf5# 0–1. riverborne – mareld, Live Game Caissa's Web, 2006.

3.Nf3 b6 4.Nc3+= Bb7 5.e3 e6 6.b5 g5 7.Ne4+= Rh7 8.Nfg5+/– Be4 9.Ne4 f5 10.Nc3+– Bg7 11.e4 fe4 12.Qg4 Qe7?? 13.Qg6+– Kd8 14.Qh7 Nf6 15.Qh4 Nd5 16.Qe4 Bc3 17.Bc3 c6 18.Bd4 c5 19.Bb2 a6 20.c4 Kc7 21.cd5 ab5 22.d6! Qd6 23.Be5 Qe5 24.Qe5 Kb7 25.Bb5 Nc6 26.Qd6 Rd8 27.Bc6 dc6 28.Qd8 b5 29.a4 e5 30.a5 c4 31.a6 Ka7 32.Qc7 Ka8 33.Qb7 1–0. pereira – opponent, internet, 2009.

3.Nf3 d6 4.h3 e5 5.e3 f5 (5...e4 6.Nd4+=) 6.d4 (6.Nc3!?+–) 6...e4+= 7.Nfd2 g5 (7...Nf6 8.Be2+=) 8.d5+– Nf6 9.c4 (9.Nc3!?+–) 9...Bg7= 10.Nc3 (10.Be2 Nbd7+=) 10...Nbd7 11.Qc2 (11.Be2 Ne5=) 11...Ne5 12.0-0-0 (12.Be2 Qe7=) 12...0-0 (12...a5 13.ba5 Ra5 14.Nb3=) 13.f3 (13.Nb3!?=) 13...a5 (13...Nh5–/+) 14.a3 (14.b5!?–/+) 14...ab4 15.ab4 c5 (15...Nh5 16.Rg1–/+) 16.dc6 (16.bc5 dc5 17.fe4 Nh5=+) 16...Nc6 (better 16...bc6!? 17.fe4 Nh5–/+) 17.Qb3= Be6 (17...Kh8 18.fe4 Nh5 19.ef5 Bf5 20.Nf3=) 18.fe4 Qb6 (better 18...f4 19.Nf3 Nh5 (19...fe3 20.Ng5 Qe7 21.Ne6 Qe6 22.Rd6+=) 20.ef4 Rf4=) 19.Nd5 (19.ef5 Qe3 (19...Bf5?? 20.c5 d5 21.cb6+–) 20.Nb5 Qb3 21.Nb3 Bf5 22.Nd6 Ne4 23.Bg7 Kg7 24.Nf5 Rf5=) 19...Bd5= 20.ed5? (20.cd5 Nb4 21.ef5–/+) 20...Nb4–/+ 21.Kb1? (21.Ba3 Ra3 22.Qa3 Qc5–+) 21...Ne4 (21...Nd7 22.Bg7 Kg7 23.c5 dc5 24.Qb2 Kh6 25.Bc4–+) 22.Ne4? (22.Bg7 Kg7 23.Ne4 fe4–+) 22...fe4?? (better 22...Bb2 23.Qb2 fe4–+) 23.Bg7 Kg7 24.Be2?? (better 24.Rd2–/+) 24...Ra2–+ 25.Rde1 (25.Qc3 Kg8 26.Qd4–+) 25...Rfa8 26.Rhf1 (26.Rhg1 R8a3 27.Qb2 Rb2 28.Kb2 Nd3 29.Ka3 Qb2 30.Ka4 Qb4) 26...Ra1 27.Kb2 R8a2 28.Kc3 Rc2 (28...Nd5 29.cd5 Qe3 30.Bd3 Qd3 31.Kb4 Qd4 32.Qc4 Rb2) 29.Qc2 Ra3 (29...Ra3 30.Kb2 Nc2 31.Kc1 Ra1 32.Kd2 Qe3 33.Kc2 Ra2 34.Kb1 Qb3 35.Kc1 Qc2) 0–1. Xiong,Jeffery (2650) – Vachier_Lagrave,Maxime (2795), chess.com Speed 1m+1spm, 2017.

3.Nf3 Nf6 4.Nc3 d5=.

3.Nf3 Nf6 4.e3 e6 5.h3 (5.a3 h3=) 5...Be7 (5...Bb4!? 6.a3 Be7=+) 6.b5= b6 7.c4 (7.Be2 a6+=) 7...Bb7 8.Be2 d5 9.d4 dc4 10.Bc4 Nbd7 11.a4 Ne4 12.Nbd2 (12.0-0 0-0+=) 12...Bb4 13.Bd3 (13.0-0 Nd2 14.Nd2 c5+=) 13...Ndf6 (13...Nd2 14.Nd2 Bg2 15.Rg1 Bh3 16.Be4=+) 14.Qc2 (better 14.0-0!?+=) 14...Nd2=+ 15.Nd2 Bg2 16.Rg1 Bh3 17.Rg7 Rg8 (better 17...Qd6!?=+) 18.Qc6 Ke7 19.Rg8 Qg8 20.Qc7 Nd7 21.Ba3 (21.Be4!? Rc8 22.Qh2= (22.Qa7? Qg1 23.Ke2 Bg4 24.Nf3 Qg2–+)) 21...Ba3 22.Ra3 Rc8 23.Qh2 (23.Qa7 Rc1 24.Ke2 Bf1 25.Kf3 Qg2 26.Kf4 Qf2 27.Kg5 Qg2 28.Kh5 Be2 29.Kh6 Bd3 30.Qd7 Kd7 31.Kh5 Qg6 32.Kh4 Rh1) 23...Rc1 (better 23...Qg2 24.Qg2 Rc1 (24...Bg2?! 25.Ra1=+) 25.Ke2 Bg2–+) 24.Ke2–+ Bg4?? (better 24...Qg2 25.Qg2 Bg2–+) 25.f3+– Bh5 26.Qh4 Ke8 27.Qf2 Bg6 28.Bg6 (28.Ne4 Be4 29.Be4 f5=+) 28...Qg6+= 29.e4 Qg5 30.Rd3 White prepares d5 (30.e5!?+=) 30...Nf6= 31.d5?? (better 31.Qe3 Qh4 32.Qf2=) 31...Nh5–+ (31...ed5?! 32.Qe3 Qh4 33.Qf2= (worse 33.ed5 Kd7 34.Qf2 Qa4–/+)) 32.Nf1 Nf4 (32...Nf4 33.Kd2 Ra1–+) 0–1. Abdullaevich (1865) – abidara (2085), lichess.org, 2019.

3.Nf3 Nf6 4.Bf6 ef6 5.b5 b6 6.h3 Bb7 7.d3 Qe7 8.e4 Nc6?? 9.Nbd2?? Qb4?? 10.c4?? Qc3?? 11.Rc1 Qa3 12.Qb3?? Qb3 13.ab3= Bc5?? 14.Be2?? Nd4= 15.Nd4 Bd4 16.Nf3 Be5 17.d4 Bf4=+ 18.Ra1 Be4 19.0-0 0-0 20.Ne1 Bd2 21.f3 Bb7 22.Nd3 Bc3 23.Rad1 Bd4 24.Kh1 c5 25.Nf4 Be5 26.Nd3 Bg3 27.Rc1 Rfe8 28.Bd1 Re3 29.Nf2 Rae8 30.Rc2 Re1 31.Kg1 Bf2 32.Kf2 R1e7 33.Re2 Re2 34.Be2 a6 35.Ra1 ab5–+ 36.Ra7 Bc8 37.cb5 Kf8 38.Ra3 Re7?? 39.Bd3?? d6 40.Ra2? Be6–+ (41.Ra4 g5–+) 0–1. sculp – EastCoastAustin, Live Game Caissa's Web, 2006.

3.Nf3 h3 4.g3 d6 5.Ng5 f6 6.Ne4 Bf5 7.d3 Be4 8.de4 e5 9.e3 Nc6 10.b5 Na5 11.Be2 Qd7 12.Bh5 Ke7 13.Bg4 (better 13.Be2+–) 13...Qb5= 14.Bc3 Qc4?? (better 14...Nc4=) 15.Ba5+– Qe4 16.Bf3 Qa4 17.Bc7 (17.Bb7 Qa5 18.Nd2 Rb8=+) 17...Rc8?? (17...Qb4 18.Qd2 Qd2 19.Kd2+–) 18.Qd6 (better 18.Bd6!? Kf7 19.Qd5 Kg6 20.Qb7 Rd8 21.Be4 Kh6+–) 18...Kf7 (18...Ke8 19.Qe6 Ne7+–) 19.Bd5 (better 19.Qd5 Kg6 20.Qb7 Qb4 21.Qb4 Bb4 22.c3 Bc3 23.Nc3 Rc7 24.Nd5+–) 19...Kg6= 20.Qd7?? (better 20.Qe6 Rc7 21.0-0=) 20…Qd7–+ (20...Qd7 21.c4 Bb4 22.Ke2 Ne7 23.Be4 f5–+) 0–1. aravind555 – embreys, lichess.org, 2018.

3.g3 hg3 4.fg3 d6 5.Bg2 e5 6.d3 Nc6 7.b5 Nce7 8.Nd2 Nf5 9.Ngf3?? (better 9.Nc4=+) 9...Ng3?? (better 9...Ne3 10.Qb1 Ng2 11.Kf2 Bh3–+) 10.hg3+– Rh1 11.Bh1 Bd7 (11...Qd7 12.c4+–) 12.a4 Qf6 13.Ne4 Qh6 14.Bg2 f5 15.Neg5 Be7 16.Nh3 (16.Bc1 Qh5+–) 16...g5 (16...Qg6 17.Kf2+–) 17.Nf2 Nf6 (17...g4 18.Nd2 0-0-0 19.Nf1+–) 18.Qd2+– f4 19.gf4 gf4 20.0-0-0 0-0-0 (20...a6 21.Rh1 Qg7 22.Rg1+–) 21.c4 Bf5 (21...Rg8 22.Rh1 Qf8 23.Ne1+–) 22.Ne1 (22.Rg1!? Rg8+–) 22...Nd7 (22...Rg8 23.Bf3+–) 23.Be4 Be6 24.a5 (better 24.Nf3!?+–) 24...Nc5 (better 24...Bh4 25.Nh1 Nc5=) 25.Qc2+– f3 26.Kb1 fe2 27.Qe2 Rf8 28.Nc2 (28.Bf3 Qg6+–) 28...Qh2 (28...Qf4 29.Rf1 Bh4=+) 29.Rf1 (29.Bf3 Qf4 30.Ne1 Nb3+–) 29...Bh4? (29...Ne4 30.de4 Bh4=+) 30.Rh1?? (better 30.Bf3+–) 30...Qf2–/+ 31.Qf2 Bf2 32.a6?? (better 32.Bg6!?–/+) 32...ba6 (32...Ne4 33.de4 Bc4 34.ab7 Kb7 35.Rh3–+) 33.ba6 (33.Bg6 Kb7–+) 33...Ne4 34.de4 Bc4 35.Nb4 Bc5 36.Nd5 (36.Bc3 Bb4 37.Bb4 Ba6–+) 36...Ba6 (36...Bd3 37.Ka1 Be4 38.Rd1–+) 37.Rh7 (37.Kc2 Rf2 38.Kb3 Bd3–+) 37...Bb6 (37...Bd3!? 38.Kc1 Be4 39.Rc7 Kd8 40.Rc5 Rf1 41.Kd2 dc5 42.Nc3–+) 38.Bc1 (38.Rh3 Rf2–+) 38...Bd3 39.Kb2 (39.Ka2 Be4 40.Nb6 ab6–+) 39...Be4 (39...Bd4 40.Nc3 Be4 41.Rh3–+) 40.Ne7 (40.Nb6 ab6 41.Rh4 d5–+) 40...Kb7 41.Rh4 (41.Rh3 Bd4 42.Kb3 Rf7–+) 41...Bd4 42.Kb3 Rf3 43.Kc4 (43.Ka2 Rf2 44.Ka3 d5–+) 43...Bd3 (better 43...Rc3 44.Kb4 c5 45.Ka5–+) 44.Kd5 Bb5 45.Rh5 (45.Rd4 ed4 46.Kd4 a5–+) 45...c6 46.Ke6 Bc4 (better 46...Kc7 47.Nf5 Bc4 48.Ke7 Bc5–+) 47.Kd6 (47.Kd7 Be2 48.Rh2–+) 47...Rf6 48.Kd7 Be6 49.Ke8 Bg4 (better 49...Bf7 50.Kd7 Bh5–+) 50.Rh7 Re6 51.Bg5 Bc5 (51...c5 52.Rh4 Bd1 53.Kd7–+) 52.Kf7 Re7! 53.Be7 Be7 (53...Kb6 54.Bc5 Kc5 55.Kf6–+) 54.Ke7 (54.Kg6 Bf3 55.Re7 Kb6 56.Re5 a5–+) 54...Bf3 (better 54...e4–+) 55.Kd6 Kb6 56.Ke5 Bd5 (better 56...a6–+) 57.Kd4= a5 58.Kc3 Kb5 59.Kb2 a4 60.Rh5 a3 61.Ka1 a2 62.Rh3 Kb4 63.Rg3 Bc4 64.Rh3 c5 65.Rg3 Bb3 66.Rh3 c4 67.Rh4 Ka3 68.Rh3 c3 69.Rh2 c2 70.Rc2 Bc2 ½–½. JUANKARODA (1800) – sphxphx (1900), lichess.org, 2020.

3.h3 a5 4.b5 a4 5.a3 d5 6.e3 Nf6 7.Nf3 Nbd7 8.Nc3 e6 (8...e5 9.Be2=) 9.Ne2 (9.Be2 e5=) 9...Bd6 10.Ned4 (10.Nc1 c5=) 10...Ke7 (10...Nb6 11.d3=+) 11.Ng5= Rh5 (11...Nb6 12.f4=) 12.f4 e5 (12...Rg5!? 13.fg5 Bg3 14.Ke2 Ne4=) 13.Nf5 Kf8 14.Be2 ef4?? (better 14...Rh8+–) 15.Bh5+– Nh5 (15...fe3 16.0-0 ed2 17.Bf7 Ne5+–) 16.Qh5 (16.Qh5 Kg8 17.Qf7 Kh8 18.Qg7) 1–0. FeegLood (2600) – bitwizardry (2325), lichess.org, 2015.

3.h3 a5 4.b5 c5 5.a3 d5= 6.c4 d4 7.e3 e5 8.Nf3 (8.ed4 cd4 9.Qe2 Qe7=) 8...e4=+ 9.Ng1 (9.Nh2 d3=+) 9...d3 10.Nc3 f5 11.f4 (11.Qa4 Nf6=+) 11...Nf6 12.Qb3 (12.Qc1 Be6–/+) 12...Be6 13.0-0-0 (13.Rc1 Be7–/+) 13...Nbd7–+ 14.a4? (better 14.Na4–+) 14...Nb6 15.Qa2 Bc4 16.Qa1 (16.Qa3 Be7–+) 16...Nfd5 (16...Bb3 17.Re1–+) 17.g3 (17.Nd5 Qd5 (17...Nd5?! 18.Bg7 Rg8 19.Bf8 Rf8 20.Qa3–+; 17...Bd5?! 18.Bg7 Bg7 19.Qg7–+) 18.Bg7 Bg7 19.Qg7 Rg8 20.Qe5 Qe5 21.fe5 Bb3–+) 17...hg3 18.Bg2 Bb3 19.Rf1 (19.Ne4 fe4 (worse 19...Bd1 20.Bg7 fe4 21.Bh8–+) 20.Be4 Qe7 21.Bd3 Ba4–+) 19...Nc3 (better 19...Ne3!? 20.Ne4 fe4 21.Bg7–+) 20.Bc3 Na4 (better 20...Qd5 21.Re1–+) 21.Bg7 Rh7 22.Be5 (22.Bf8 Qd5 23.Bg7 Rg7 24.Qe5 Kf7 25.Qd5 Bd5–+) 22...c4 (better 22...Qd5 23.Kb1 Qc4–+) 23.Qd4 (23.Bf6 Qd6 24.Be5 Qa3 25.Qa3 Ba3 26.Kb1 Bb4–+) 23...Ba3 (better 23...Qe7 24.Qa1 Bc2 25.Bb2–+) 24.Kb1 Qd4 25.Bd4 c3 26.Bc3 Nc3 27.dc3 Rc8 28.h4 Rc3 29.Nh3 (29.Nf3 ef3 30.Bf3 Rc2–+) 29...Bc2 (29...Rc2 30.Nf2 gf2 31.Rd1 Bb4 32.Rd3 ed3 33.Bc6 bc6 34.b6 Ba2 35.Ka1 Bc3) 30.Ka2 Rhc7 31.Ng5 (31.Be4 fe4 32.Rhg1–+) 31...R7c4 32.Ne4 (32.Rd1 Ra4 33.Rd3 Bc1) 32...fe4 33.Be4 (33.Rd1 Ra4 34.Rd3 Bc1) 33...Re4 (33...Bc1 34.Bg6 Ke7 35.Rc1 Ra4 36.Kb2 Rb3) 34.f5 (34.Rd1 Ra4 35.Rd3 Bc1) 34...Ra4 (34...Bc1 35.Rc1 Ra4 36.Kb2 Rb3) 35.Rf4 Rf4 (35...Bb4 36.Kb2 Rb3 37.Kc1 Ra1) 36.ef4 g2 (36...d2 37.Rd1 Bc1 38.Re1 de1Q 39.h5 Ra3) 37.h5 0–1. BeepBeepImAJeep (2775) – phenomen54 (2770). lichess.org, 2020.

3.h3 c6 4.c3 (4.Nf3 d5+=) 4...d5 5.e3 (5.Nf3 Rh5=) 5...Nf6 6.c4 (6.Nf3 Nbd7=) 6...e5 (6...dc4 7.Bc4 e6 8.Qb3=) 7.Be5 Bb4 8.Nf3 Bf5 (8...Nbd7 9.Bd4=) 9.Be2 (9.Qb3!? Qe7 10.a3+–) 9...Nbd7= 10.Bb2 Bd6 (10...dc4 11.Bc4 b5 12.Be2=) 11.cd5 Nd5 12.Nc3 Nb4 (12...Nc3 13.Bc3 Nc5 14.0-0=) 13.0-0 (13.e4 Bg6 14.a3 Na6+–) 13...Bd3 (better 13...Bc2!? 14.Qc1 Nc5=) 14.a3+– Be2 15.Qe2 Nd5 (15...Na6 16.Ne4 Bf8 17.d3+–) 16.Ne4 (16.Nd5 cd5 17.Qb5 Qb6 18.Qd5 Qb2 19.Qd6 Qf6+–) 16...Be7 (16...Bf8+–) 17.d4 (17.Bg7!? Rg8 18.Bd4+–) 17...Qb6 (17...0-0 18.Nc3=) 18.Rab1 Qc7 (18...0-0 19.Qc2+=) 19.Ne5 (19.Qc2 Rd8+=) 19...Ne5 (19...Rd8 20.Nd7 Qd7 21.Nc5 Bc5 22.dc5+–) 20.de5 0-0-0 (20...Qd7 21.Rfd1+=) 21.Rfd1 g5? (21...Kb8 22.Bd4+–) 22.Rbc1?? (better 22.Nd6!? Bd6 23.ed6 Qd7 24.Bh8 Rh8+–) 22...Kb8 (22...Rhg8 23.Qh5+–) 23.Qg4 (23.Nd6 Bd6 24.ed6 Qd6 25.Bh8 Rh8+–) 23...Qb6 (23...Rhg8!? 24.Qh5 Qa5+–) 24.Bd4+– Qa5 25.e6 (25.Ng5?! Rdg8 26.f4 c5=+) 25...fe6? (better 25...f6!?+–) 26.Bh8 Rh8 27.Qe6 Qa3 (27...Rd8 28.Ng5 Qa3 29.Nf7+–) 28.Ra1 (better 28.Qe5 Kc8 29.Qh8 Bd8 30.Qe5+–) 28...Qb2 29.Rab1 Qc2 (29...Qg7 30.Rd5 cd5+–) 30.Qe5 (30.Qe5 Bd6 31.Qh8 Kc7 32.Nd6 Kd6 33.Qf6 Kc7 34.Qe5 Kc8 35.e4+–) 1–0. BeepBeepImAJeep (2565) – NicolaiJorgensen (2530), lichess.org, 2017.

3.h3 e6 4.b5 b6 5.e3 Bb7 (5...a6 6.Nf3=) 6.Nf3+= Rh5 (6...a6 7.Nc3+=) 7.Be2 (7.Bd3 a6+=) 7...Nh6 (7...a6 8.c4+=) 8.0-0 Nf5 (8...a6 9.c4+=) 9.c4 (9.Nd4 Rg5 10.Bf3 c6 11.Nf5 Rf5+–) 9...g6 (9...a6 10.Ne5 Rg5 11.Bf3+=) 10.Ne5 Rg5 (10...Rh7 11.Bf3 c6 12.d4+–) 11.Bf3 (11.Bg4 Nh6+–) 11...c6+– 12.d4 (12.Bg4 Nd6+–) 12...f6 (12...Nd6 13.Nd2+–) 13.Ng4 Qe7 (13...Nd6 14.Nd2+–) 14.Nd2 d5 15.e4 Nd6 (15...cb5 16.ed5 bc4 17.de6+–) 16.bc6 Bc6 17.ed5 ed5 (17...f5 18.dc6 fg4+–) 18.Re1 Nc4 (18...Kd8 19.Re7 Be7 20.Qe2 dc4 21.Re1+–) 19.Nc4 dc4 20.Re7 Be7 21.d5 Bb7 (21...Rg4 22.hg4 Bb7 23.d6+–) 22.Qe1 Kf7 (22...Nd7 23.Nf6 Kd8+–) 23.Qe6 Kf8 24.Nf6 Bd5 (24...Rg2 25.Kg2 Bf6 26.Qf6 Ke8 27.Re1 Kd7 28.Re7 Kc8 29.Qf8) 25.Bd5 Rd5 (25...Rg2 26.Kg2 Kg7 27.Ng4 c3 28.Qg8) 26.Qg8 1–0. DEFFM – GuestSTZD, freechess.org, 2018.

3.h3 e6 4.c4 Nf6 5.d4 (5.Qa4 Be7=) 5...d6 (5...Bb4!? 6.Bc3 Be7–/+) 6.b5 (6.e3 d5 7.a3 a5+=) 6...Nbd7 (6...a6 7.e3=) 7.e3 e5 8.Bd3 ed4 (8...e4 9.Bc2=) 9.ed4 c5 (9...d5 10.c5=) 10.d5 (10.Nf3 Qe7 11.Be2 a6+–) 10...b6 (10...Ne5 11.Qe2 Qe7 12.Be5 de5 13.Nc3+=) 11.Nd2 (11.Nf3 Qe7 12.Be2 a6 13.ba6 Ne5+–) 11...g6 (11...Ne5 12.Be5 de5 13.Ngf3+=) 12.Ne4 (12.Qe2 Qe7 13.Ne4+–) 12...Bg7 (12...Be7 13.Nf3+–) 13.Qe2 (better 13.Nd6 Kf8 14.Nc8 Qc8 15.Ne2+–) 13...Ne4?? (better 13...0-0 14.Nd6 Qc7 15.Nc8 Rfc8+–) 14.Qe4 (better 14.Bg7 Rh7 15.Qe4 (15.Be4?! Rg7 16.Nf3 Qe7+=) 15...Qe7 16.Qe7 Ke7 17.Bc3+–) 14...Ne5 (14...Kf8 15.Qe2 Ne5=+) 15.f4 (15.Be5!? de5 16.Rd1=) 15...Bf5–/+ 16.Qe3 Bd3 17.fe5 (better 17.Be5 Be5 18.fe5 Bc4 19.ed6 Kd7 20.Nf3–/+) 17...Qe7?? (better 17...Bc4 18.ed6 Kf8 19.Qe7 Kg8–/+) 18.Qd3+– Be5 19.Qe2?? (better 19.Be5 Qe5 20.Qe2+–) 19...Bb2–/+ 20.Qe7 (20.Rb1 Bc3 21.Kd1 Be5–/+) 20...Ke7 21.Rb1 Bd4 (21...Bc3 22.Kd1–/+) 22.Nf3 Bf6 23.0-0 Kd7 24.Rfe1 Rae8 25.Rb3 (25.Kf2 Be5 26.Ne5 de5–/+) 25...Re1 26.Kf2?? (better 26.Ne1 Re8 27.Nf3–/+) 26...Re7 (26...Rc1 27.Ra3 a5 28.ba6 Rc4 29.a7–+) 27.Ra3 Rhe8 (27...Kc8 28.g3–+) 28.Ra7 Kd8 (28...Kc8 29.Ra8 Kb7 30.Re8 Re8 31.g4–+) 29.Ra8 (29.Ra6 Kc7 30.a4–+) 29...Kd7 30.Ra7 Kc8 31.Ra8 (31.Ra6 Re2 32.Kf1 Kb7–+) 31...Kb7 32.Ra7 (32.Re8 Re8 33.a3–+) 32...Ka7 33.Nd4 Kb7 (33...Bd4 34.Kf3 Re3 35.Kf4 Bf6 36.g3 R8e4) 34.Nc6 Kc7 (34...Re2 35.Kg1 Ra2 36.Kf1 Ree2 37.Nd8 Kc8 38.Nc6 Rf2 39.Kg1 Rg2 40.Kh1 Rge2 41.Na7 Ra7 42.Kg1 Ra1) 35.Na5 Ra8 (35...Bd4 36.Kf3 Re3 37.Kf4 Bf6 38.Nc6 R8e4) 36.Nb7 (36.Kf3 Ra5 37.a4 Ra4 38.g3 Ra3 39.Kf2 Bd4 40.Kf1 Rf3 41.Kg2 Rf2 42.Kh1 Re1) 36...Ra2 37.Kf3 Kb7 (37...Ra3 38.Kf4 Rg3 39.Nd6 Bg5) 38.Kg4 (38.g3 Ra3 39.Kf2 Bd4 40.Kf1 Rf3 41.Kg2 Rf2 42.Kh1 Re1) 38...Re4 (38...Rf2 39.g3 Re4) 39.Kf3 Rg2! 40.Ke4 (40.Kg2 Rc4 Combination) 40...Re2 (40...Rg3 41.Kf4 Be5 42.Ke4 f5) 41.Kd3 Rh2 42.Ke4 Rh3 43.Kf4 Rd3 44.Kg4 (44.Ke4 Rg3 45.Kf4 Be5 46.Ke4 f5) 44…Ra3 (44...Ra3 45.Kf4 h3 46.Ke4 h2 47.Kf4 h1Q 48.Kg4 Qf3; 44...Rg3 45.Kf4 Be5 46.Ke4 f5) 0–1. Agiant – Xelore, lichess.org, 2019.

3.h3 f6 4.e3 b6 (4...e5 5.a3=) 5.b5 (5.Bd3 e5 6.Bg6 Ke7+=) 5...Bb7 6.c4 (6.Bd3 e5+=) 6...e6 (6...e5 7.Nf3=) 7.Nf3+= Qe7 (7...a6 8.Bd3+=) 8.Be2+– Qf7 9.Qc2 Ne7 10.0-0 Qg6 11.Qg6 Ng6 1–0. GuestRTFM – GuestCBBD, freechess.org, 2018.

3.h3 f6 4.g4 g5 (4...hg3 5.fg3 d5 6.a3–/+) 5.f4 (5.Bg2=) 5...Nc6 (better 5...gf4!? 6.c4 e5–/+) 6.fg5 (better 6.b5 Na5 7.fg5+–) 6...fg5?? (better 6...Nb4 7.Nf3 Bg7+=) 7.Bh8+– Nb4 8.c3 Nc6 (8...Nd5 9.Nf3 Nh6 10.Ng5+–) 9.Nf3 (9.Qc2 d5 10.Qg6 Kd7 11.Qg8 e6+–) 9...Nf6 (9...d5 10.Qc2 Qd6 11.Ng5+–) 10.Ng5 (10.Qc2 d5 11.Qg6 Kd7 12.Qg5 Kd6+–) 10...e5 (10...Ne5 11.Qc2 c5 12.Nh7+–) 11.d3 (better 11.Qc2 e4 12.Ne4 Ne4 13.Qe4 Qe7+–) 11...d6 (11...Ng4 12.Ne6 de6 13.hg4+–) 12.Nd2 (12.Qb3 Qe7+–) 12...Be7 (12...Ng4 13.Nde4 Be7 14.hg4 Bg5 15.Qb3+– (worse 15.Ng5 Qg5 16.Qd2 Qg4+–)) 13.Nde4 (better 13.Qb3 d5 14.Bg2 Ng4 15.hg4 Bg5 16.Bd5+–) 13...Ne4 14.Ne4 (14.de4 Bg5 15.Qb3 Ke7–+) 14...d5 (14...Kf7 15.Qb3 Kg6 16.Be5 Ne5+–) 15.Nc5! Bc5 16.d4 (better 16.Qd2!? Be6 17.Qh6+–) 16...ed4+= 17.Bd4 (17.Qd3 Qd6 18.Bg2 dc3 A) 19.Qd5? Qg3 20.Kd1 c2 21.Kc1 Ba3 22.Kd2 Qf4 23.Kc3 c1Q 24.Rac1 Qe3 (24...Bc1?! 25.Qh5 Ke7 26.Qh7 Ke6 27.Qg6 Ke7 28.Qh7 Ke8 29.Qg6 Ke7 30.Qh7=) 25.Qd3 Bc1 26.Qe3 Be3–+; B) 19.Bc3?! Be6+=; C) 19.Qc3?? Bb4 20.Kd1 Bc3 21.Bc3 Ne5–+; D) 19.Bd5+=) 17...Bd4?? (better 17...Nd4 18.cd4 Bb4 19.Kf2 Qf6 20.Kg2 Bc3=+) 18.cd4+– Be6 (18...Qe7 19.Bg2 Qe3 20.Qb3 (20.Bd5?! Nd4 21.Qd3 Qd3 22.ed3 Nc2 23.Kd2 Na1+–) 20...Qb3 21.ab3 Nd4 22.Rd1 (22.Bd5?! Nc2 23.Kf2 Na1 24.Ra1 c6+=) 22...Nb3 23.Bd5+–) 19.Bg2 Qf6 20.Bf3 (better 20.Rb1+–) 20...Nd4+= 21.0-0 Nf3 (21...Qe5 22.Rb1 0-0-0 23.Qd3+=) 22.Rf3 Qe7 (22...Qe5!?+=) 23.Qd4+– 0-0-0 (better 23...Kd7!?+–) 24.Qa7+– Kd7 (24...c6 25.Rb1 Qc7 26.Ra3+–) 25.Rb1 (25.Qb7!? Qc5 26.e3 Rf8 27.Rf8 Qf8 28.Qb5 Kd8+–) 25...b6 26.Qa4 Kc8 27.Qa8 (27.Rc1 Qd6+–) 27...Kd7 28.Qa4 Kc8 29.Rc1 Bd7?? (29...Qd6+–) 30.Qa8 1–0. Agiant – checkmate255, lichess.org, 2018.

3.h3 Rh5 4.a3 (4.e4 Rh6+=) 4...Rg5 (4...Nf6 5.e4 e5 6.Be2+=) 5.Nf3+= White gets in control 5...Rg6 (5...Rh5 6.e3+–) 6.Nh4+– Rh6 7.Nf5 Rh5 (7...Rh7 8.e4+–) 8.e4 (8.Ng7 Bg7 9.Bg7 f6+=) 8...g6 9.Ng3 Re5?? (better 9...Rh4+–) 10.Be5 d6 11.Bb2 d5 (11...Nf6 12.d4+–) 12.ed5 Qd5 13.Nc3 Qe6 14.Be2 Bd7 (14...Nf6 15.0-0+–) 15.0-0 Qd6 (15...Nf6 16.Re1+–) 16.Nce4 (16.Nge4 Qe6+–) 16...Qe6 (16...Qf4 17.Bf3+–) 17.Nc5 Qc6 (17...Qb6 18.Bd4 Qd6 19.Be3+–) 18.Bf3 Qb6 19.Bb7 Bb5 (19...Bc6 20.Ba8 Ba8 21.Qg4+–) 20.c4! Bc4 (20...Bc6 21.Ba8 Ba8 22.Qg4+–) 21.d3 Bd5 22.Bd5 Nc6 23.Qf3 Rd8 24.Bc6 (24.Qf7) 24...Rd7 25.Bd7 Kd8 26.Qa8 Qb8 27.Qb8 1–0. BeepBeepImAJeep – Terminator_800, lichess.org, 2016.

3.h3 d5

4.b5 c5 5.e3 Nf6 6.c4 g5 (6...Bf5 7.Nf3=) 7.cd5 Qd5 8.Nc3 Qd6 (8...Qf5 9.Nf3+=) 9.Nf3 (9.Ne4 Qb6 10.Nf3 g4 11.Nf6 ef6 12.hg4 Bg4+–) 9...g4 (9...Rg8!?+=) 10.hg4+– Bg4 11.Be2 (11.Ne4 Qb6 12.Nf6 ef6+–) 11...h3 (11...Bg7 12.Rh4 Rh4 13.Nh4 Be2 14.Qe2+– (14.Ne2?! Qh2 15.Nf3 Qh1 16.Neg1 Qg2=)) 12.gh3 Rh3 (12...Bh3? 13.Ng5 Qd7 14.Bf3+– (14.Nh3?! Rh3 15.Bf3 Rh1 16.Bh1 a6+–; 14.Rh3?! Rh3 15.Nh3 Qh3+–)) 13.Rh3 Bh3 14.Ng5 Bg2 (14...Be6+–) 15.Bf3 (15.Bh5 Nh5 16.Qh5 Bd5+–) 15...Bf3 (better 15...Qh2!?=) 16.Qf3+– (16.Nf3?! Nbd7=) 16...Qc7?? (better 16...Nbd7 17.Qb7 Rd8+–) 17.Nd5+– Nd5 18.Qd5 (better 18.Qf7 Kd7 19.Qd5 Kc8 20.Qf7+–) 18...e6+– 19.Qf3 Bh6? (better 19...Qd7+–) 20.Bf6?? (better 20.Be5! Qe7 21.Nh7+–) 20...Bg5= 21.Bg5 Nd7 22.Bf4 Qb6 (22...e5 23.Bg5=) 23.a4 e5 24.Bg5 (24.Bg3 a6 25.Qh1 Ke7 26.Qh4 f6 27.ba6 Qa6=) 24...f6 (24...Qg6 25.Qg3=+) 25.Bh6 (25.a5!? Qe6 26.Bh4=) 25...0-0-0=+ 26.0-0-0 (26.Qd5 Rh8 27.Bg7 Rh4=+) 26...Qa5 (26...Qe6 27.d3–/+) 27.Qe4 Qb4 (better 27...c4!? 28.Qc4 Kb8–/+) 28.Qb4= cb4 29.Kb2 (29.d4!?=) 29...Nc5=+ 30.a5 (30.Bg7 Nd3 31.Kb3 f5=+) 30...Nd3 31.Kb3 Nf2 32.Rf1 (32.Rc1 Kd7–/+) 32...Ne4 (32...Rd2 33.Kb4 Ne4 34.Kc4–/+) 33.Kb4 (33.Rc1 Kd7=+) 33...Rd2 34.Bg7 (34.Kc4 Kd7–/+) 34...Rb2–+ 35.Ka3 (35.Kc4 Nd6 36.Kd3 Rb5 37.Rf6–+) 35...Rb5 36.Bf6 Nf6 (36...Ra5 37.Kb4 Rd5 38.Kc4 Rc5 39.Kd3 Nf6 40.Rf6–+) 37.Rf6 (better 37.Ka4 Rd5 38.Rf6–/+) 37...Rc5?? (better 37...Ra5 38.Kb4 b6–+) 38.Kb4= Rc6 39.Rf5 (39.Rf8 Kd7 40.Rf7 Kd6 41.Rb7 a6=) 39...Re6 40.e4 Kc7 41.Kc5 b6 42.ab6 ab6 43.Kd5 Attacks the isolani on e5 43...Rd6 44.Ke5 b5 45.Rf1 Rb6 46.Rb1 b4 47.Kf5 Kd6 48.e5 Ke7 49.e6 b3 50.Rb2 Rb5 51.Kg6?? (better 51.Ke4=) 51...Ke6–+ 52.Kg7 Kd5 53.Kf6 Kc4 54.Ke6 Kc3 55.Rb1 Kc2 Black plans b2 56.Rh1 b2 57.Rh2 Kc1 58.Rh1 Kc2 59.Rh2 Kb3 60.Rh3 Ka2 61.Rh2 Rb3 62.Kd5 Rd3 63.Kc4 Rd1 64.Kc3 Rc1 65.Kd2 (65.Kd3–+) 65...b1Q 66.Ke3 Rc2 (better 66...Kb3 67.Rd2–+) 67.Rc2 Qc2 (67...Qc2 68.Kf3 Qd3 69.Kg4 Kb3–+) 0–1. AleksandrNekhoroshik (1660) – BennyBoy2020 (1675), lichess.org, 2020.

4.e3 f6 5.c4+/– e5 6.cd5 Qd5 (6...Ne7 7.Qa4 c6 8.dc6 Nec6 9.Nf3+/–) 7.b5 (7.Nc3 Qf7 8.b5 Be6+/–) 7...c6 (7...Bf5!? 8.Nc3 Qe6+/–) 8.Nc3+– Qc5 (8...Qe6 9.Nf3 Ne7 10.Rc1+–) 9.Nf3 a6 (9...Ne7 10.Qb3 Nf5 11.Bd3+–) 10.Na4 Qb4 11.Bc3 Qa3 12.Nb6 Be6?? (12...ab5 13.Qc2 Ne7 14.Na8 Nd5+–) 13.Na8 Nd7 (13...Bd6 14.bc6 Nc6+–) 14.Nc7 (14.bc6 bc6 15.Nc7 Kf7 16.Ne6 Ke6 17.Bc4 Ke7+–) 14...Ke7 15.Ne6 Ke6 16.bc6 bc6 17.Bc4 Ke7 (17...Kd6 18.Rb1 Kc7 19.Rb3+–) 18.Rb1 Nc5 (18...Kd8 19.Qc2 a5+–) 19.Bb4 Qa4 20.Bc5 Kd7 (20...Kd8 21.Qa4 Bc5 22.Qa5 Bb6 23.Qb6 Kd7 24.Qb8 c5 25.Rb7 Kc6 26.Qc7) 21.Rb7 Kc8 22.Qa4 Kb7 23.Qa6 Kc7 24.Qa7 Kd8 25.Bb6 Ke8 (25...Kc8 26.Be6) 26.Qf7 1–0. pierred – anony, internet, 2015.

4.e3 Nf6 5.d4 Bf5 6.c4 c6 7.Nc3 g6 (7...e6 8.c5=) 8.Nf3 Ne4 (8...Nbd7 9.a3+=) 9.Ne5 (9.cd5 Nc3 10.Bc3 Qd5+=) 9...Bg7 (9...e6 10.c5=) 10.c5 (10.cd5 Nc3 11.Bc3 Qd5+=) 10...f6 (10...Nd7 11.Nd7 Qd7 12.Be2=) 11.Nf3+= a5 12.ba5 (12.Qa4 Na6 13.b5 Nb4+=) 12...Na6 (12...Qa5 13.Qb3=) 13.Be2 (13.Ne4!? Be4 14.Bc3+=) 13...Qa5= 14.Qb3 Kf7 (better 14...Nb4!? 15.a3 Nc2 16.Qc2 Nf2 17.Qf5 gf5 18.Kf2 Qc7=+) 15.0-0 Rhb8 (15...Qb4 16.Na4+=) 16.Nh4 (better 16.Rfc1!?+–) 16...Nd2= 17.Qd1 Nf1 18.Qf1 (18.Nf5 gf5 19.Bf1 b6 20.cb6 Rb6=) 18...Qb4 (18...Bd7 19.Qb1 f5 20.Qc2=) 19.Qc1 (worse 19.Nf5 Qb2 20.Na4 Qc2=+) 19...Nc5? (better 19...Bc8=) 20.dc5?? (better 20.Nf5 gf5 21.dc5 Qc5 22.Qc2+–) 20...Qh4–+ 21.f3 (21.Bf3 Rh8–+) 21...Bh3! 22.gh3 Qh3 (22...Qg3 23.Kf1 Rh8 24.Bd1 Rh3 25.Ke2 Qf3 26.Ke1 Qg3 27.Ke2–+) 23.Kf2 Qh2 (23...Qh4!? 24.Kg2–+) 24.Ke1–/+ Bh6 (24...Qh1 25.Kd2 Qc1 26.Rc1–/+) 25.Nd1=+ Qg1 26.Kd2 Ra5 (26...e5!?–/+) 27.f4 g5 (27...Qg2 28.Qc3 Rba8 29.Qb3=+) 28.fg5 (28.Qc3 Rba8 29.f5 Qh2=+ (worse 29...Ra2 30.Ra2 Ra2 31.Qb3+–)) 28...Bg5=+ 29.Qc3 Rba8 30.a3 (30.Qb3 R5a7=+) 30...Qg4?? (better 30...Bh4 31.Bh5 Ke6–/+) 31.Bg4+– 1–0. e4_e5_f4 (1715) – Catweazle67 (1655), lichess.org, 2020.

4.Nf3 Bf5 5.e3 e6 6.b5 (6.Nd4 Nf6+=) 6...c5 7.Be2 (7.Bd3 Bd3 8.cd3 Nf6=) 7...Nf6 8.0-0 Nbd7 9.d3 a6 (9...Bd6 10.Nbd2=) 10.a4 (10.Nc3 Be7+=) 10...Bd6 11.c4 (11.Nc3 Qc7+=) 11...Qe7 (11...dc4 12.dc4 Qc7 13.Qb3=) 12.Nbd2 Bg6 (12...Kf8 13.Re1 Rh5 14.cd5 ed5 15.Nd4+/–) 13.Qb3 a5 14.Rfe1 (better is 14.d4+=) 14...b6? (better is 14...Kf8!?+=) 15.cd5+– ed5 16.e4 de4 (16...c4!? 17.Qa2 cd3 18.Bd3 de4+/–) 17.de4+– Ne5? (better is 17...Kf8 18.e5! Ne5 19.Ne5 Be5 20.Be5 Qe5+–) 18.Be5 Be5 19.Ne5 Qe5 20.Nc4 Qc7 (20...Qg5 21.e5 Nh5 22.Bh5 Bh5 23.Nb6+–) 21.e5 Nh5 (21...Nh7 22.Bg4 0-0 23.f4+–) 22.Nd6 (22.Bg4!? Kf8+–) 22...Kf8 23.Qf3 (23.Rad1 Rd8 24.Bc4 Rd7+–) 23...Rb8 (23...Rd8 24.Rad1 Kg8 25.Bc4+–) 24.Rad1 Rd8 (24...Bc2 25.Rd2 Bg6 26.Bc4+–) 25.Qc6 Qb8 (25...Qe7 26.Qb6 Rd7 27.Bg4+–) 26.Nb7 (better is 26.Bc4!? Kg8 27.e6 Kh7+–) 26...Rc8 (26...Rd4 27.Qb6 Kg8 28.Rd4 cd4 29.Bf3+–) 27.Qb6 Kg8 (27...Rh6 28.Bc4 Bf5 29.Rd6+–) 28.Bg4 Kh7 (28...Re8 29.e6 fe6 30.Re6+–) 29.Bc8 Rc8 30.Rd6 c4 (30...Nf4 31.Na5 Qb6 32.Rb6+–) 31.Na5 Qa8 (31...Qb6 32.Rb6 Bc2 33.Rc6 Rc6 34.bc6 Ba4 35.Re4 Bc6 36.Nc6+–) 32.Qa6 (32.Nc6 Qa4 33.Rg6 fg6+–) 32...c3 (32...Nf4 33.Qa8 Ra8 34.b6+–) 33.Qa8 Ra8 34.Ra6 (better is 34.b6 Bf5 35.b7 Rb8+–) 34...Re8 (34...Rd8 35.Nb3 c2 36.Rd6+–) 35.Nc6 c2 36.Nd4 (better is 36.b6 Nf4 37.b7 Be4+–) 36...Re5 (36...Nf4 37.Rc6 Nd3 38.Ra1 c1Q 39.Rac1 Nc1 40.Rc1+–) 37.Nc2 (37.Re5?? c1Q 38.Kh2 Qf4 39.Kg1 Qe5–+) 37...Rg5 (37...Rc5 38.Ne3 Be4 39.Ra7+–) 38.Ne3 (better is 38.b6 Nf4 39.b7 Bc2+–) 38...Nf4 39.Kh2 Be4 (39...Nd3 40.Rf1+–) 40.g3 (40.Rd1!? Ng2 41.Rg1 Ne3 42.Rg5 Nf1 43.Kg1 Nd2 44.Rh5 Kg8+–) 40...Nd3 (40...hg3 41.fg3 Nd3 42.Rf1+–) 41.gh4 Rc5 (41...Rh5 42.Rd1 Nc5 43.Ra7 Rh4 44.Rc1+–) 42.Re2 (42.Rf1!? f5+–) 42...Rc1 43.Ng2 Nc5 (43...f5 44.a5+–) 44.Ra7 Rb1 (44...Kg6 45.Rc7 Bf3 46.Re3+–) 45.Rc7 Bf3 (45...Bg2 46.Rc5 Bf1 47.Re7+–) 46.Re3 (better is 46.Re1 Rb4 47.Rc5 Ra4+–) 46...Bg2 47.Rc5 Ba8 (47...Bf1 48.Rc7 Rb4 49.Rc1 Bb5 50.ab5 Rb5 51.Rc7+–) 48.Rcc3 (better is 48.a5 Kg6+–) 48...f5 (48...Rb4 49.Rb3 Rh4 50.b6+–) 49.Rc4 (49.Re8 Bb7 50.Re7 Ba8+–) 49...Kg6 (49...f4 50.Ree4! (50.Rf4?! Rh1 51.Kg3 Rg1 52.Kh2 Rh1 53.Kg3 Rg1 54.Kh2 Rh1=) 50...Kg6 51.Re6 (51.Rf4?! Rh1 52.Kg3 Rg1 53.Kh2 Rh1 54.Kg3 Rg1 55.Kh2 Rh1=) 51...Kf5 52.Rec6+–) 50.Kg3 Kf6 (50...Rd1 51.a5 Rg1 52.Kf4+–) 51.Kf4 (51.Rd4 Be4 52.Kf4 Kg6+–) 51...Rb2 (51...Rd1 52.a5+–) 52.f3 g6 (52...Rd2 53.Re8 Bd5 54.Rd8+–) 53.Rd4 (better is 53.Rd3 Rf2 54.Rc8 Bf3 55.Rf3+–) 53...Kf7 (53...Bd5+–) 54.Rd7 Kf6 55.Red3 Rb4 56.R3d4 (56.R3d4 Ke6 57.a5+–) 1–0. Taus,Martin (2115) – Krajina,Ales (2185), CZE–ChT2F, 2011.

2.Bb2 Rh6

3.a3 g5 4.e3 d6 5.Be2 g4 6.f3 (6.h3 e5+=) 6...Re6 (better is 6...e5!?=) 7.fg4+/– hg4 8.Bg4 Rf6? (better is 8...Rg6 9.Bc8 Qc8+/–) 9.Bf6 ef6?! (9...Bg4 10.Qg4 Nf6+–) 10.Bc8 Qc8 11.Qf3 c6 12.Nc3 d5 13.Nge2 Bd6 14.0-0 f5 15.Qf5 Qc7 16.g3 f6 17.Qe6 Kd8 18.Qg8 Kd7 19.Rf6 Be5 20.Rf7 Kd6 21.Qg6 Bf6 22.Qf6 1–0. Fournier,Frederic (1960) – cybermobile1, Owl21.com, 2009.

3.b5 f6 4.e3 (4.e4 e6+=) 4...b6 (4...e5 5.d4 e4 6.d5+=) 5.Be2 g6 6.Bf3 c6 7.Ne2 d5 8.bc6 Nc6 9.c4 e6 10.cd5 ed5 11.Nf4 Nge7 (11...Nce7 12.Nc3 Bb7 13.Qb3+–) 12.Bf6+– Qd6 13.Bg5 Rh7 (13...Qe5!? 14.Be7 Ne7 15.Nc3+–) 14.Nc3 Bg7 (14...Ne5 15.Nfd5 Nf3 16.Qf3+–) 15.Nfd5 Nd5 16.Bd5 Bd7 (16...Bc3 17.dc3 Rd7 18.Be4+–) 17.Nb5 Qb8 (17...Qe5 18.Qf3 Qg5 19.Qf7 (19.Bc6?! Ba1 20.Nc7 Ke7 21.Nd5 Ke8 22.Ba8 Rf7 23.Qe4 Kf8+–) 19...Kd8 20.Bc6+–) 18.Qc2 (better 18.Rc1 Ne7 19.Nc7 Qc7 20.Rc7 Nd5 21.Qb3 Nc7 22.Qg8 Bf8 23.Qh7+–) 18...Ne5 (18...Ne7 19.Nc7 Kf8 20.Be7 Ke7+–) 19.Nc7 Kf8 20.Rc1 Bf5 (20...Bc6 21.Qe4 Qc7 22.Rc6+– (worse 22.Bc6 Nc6 23.Qg6 Rh8 24.Rc6 Qf7+–)) 21.e4 (21.e4 Bg4 22.Na8+–; 21.Na8 Bc2 22.Rc2 Nd3 23.Kd1 Nb4=; 21.Ba8?! Bc2 22.Rc2 Nd3 23.Ke2 Be5 24.Ne6 Kf7+–) 1–0. DEFFM – GuestPVQG, freechess.org, 2018.

3.b5 Nf6 4.Nf3=.

3.e3 a6 4.Nf3 e6 5.a3 Nc6 6.d4 d5 7.Bd3 b5 8.Nbd2 g5 9.Ne5 Bb7 10.Nb3 f6? 11.Bg6+– Ke7 12.Nf7 Qc8 13.Nh6 Bh6 14.Qh5 f5 15.Nc5 Kf6 16.Bf7 Nce7 17.h4 g4 18.e4! Kg7 19.Ne6 Kh8 20.Bc1 Kh7 21.ef5 Nf5 22.Qf5 Kh8 23.Qe5 Kh7 24.Ng5 Bg5 25.hg5 Nh6 26.Rh6# 1–0. pierre (2125) – michael709, internet, 2007.

3.e3 Rb6 4.a3 Nf6 5.Be2 Nc6 6.b5 Na5?? 7.Bc3+– c6 8.Ba5 cb5 9.Bb5! a6 10.Bb6 Qb6 11.Be2 g6 12.Nf3 Bh6 13.0-0 a5 14.Nc3 a4 15.Qb1 Qc5 16.Qb5 Qb5 17.Bb5 e5 (17...Ra5 18.Rfb1+–) 1–0. Trkn – CHESS_MASTER_BLASTER_awaits, itsyourturn.com, 2000.

3.e3 d5 4.a3 h4 5.Nf3 h3 6.g3 f6 7.d4 Bf5 8.c4 a5 9.cd5 Qd5 10.Nc3 Qd7 +–.

3.e3 d5 4.Nf3 Nf6 5.a3 Bg4 6.h3 Bf5 7.Be2 e6 8.0-0 Nbd7 9.Nc3 e5 10.Ng5 a5 =.

3.e3 d6 4.Be2 e5 (4...Nf6 5.Nf3+=) 5.Bh5 (5.Nc3!?+–) 5...Nf6 6.Be2 Nc6 (6...e4 7.Nc3+=) 7.b5 Nb4 8.a3 Nbd5 9.c4 Nb6 10.Nc3 d5 (10...Rg6 11.g3+=) 11.cd5+– Bc5 (11...Nbd5 12.Qa4+–) 12.Nf3+– e4 13.Ne5 Qd6 (better 13...Bd6 14.d4 Qe7+–) 14.0-0?? (better 14.d4 ed3 15.Nd3+–) 14...Qe5–+ 15.Ne4 (15.g3–+) 15...Qh2 (15...Qb2?! 16.Nc5 Nfd5 17.f4–+) 0–1. GuestGQWV – GuestTXZD, freechess.org, 2017.

3.e3 f6 4.Nf3 g5 (4...e5 5.a3+=) 5.Be2 (5.d4 d5+=) 5...d6 (5...e5 6.d4=) 6.Nd4 e5 (6...g4!?+=) 7.Bh5+– Rh5?? (better 7...Ke7 8.Nb3 f5+–) 8.Qh5+– Kd7 9.Qf7 Be7 (9...Qe7 10.Qg8 ed4+–) 10.Qe6 Ke8 11.Qg8 Kd7 12.Qd8 Kd8 13.Nb5 (13.Nb3 Be6+–) 13...Bd7 (13...a5 14.ba5 Ra5 15.N5c3+–) 14.N5a3 a6 15.h4 g4 (15...gh4 16.Rh4 d5 17.Rh8 Be8 18.b5+–) 16.h5 f5 (16...Bf5 17.h6 Bh7 18.Nc3+–) 17.h6 Nc6 (17...Bf6 18.c4+–) 18.h7 Bf6 19.h8Q Bh8 20.Rh8 Ke7 (20...Be8+–) 21.Ra8 Nb4 22.Nc3 Nd3 23.cd3 Bb5 24.Nd5 Ke6 25.Nc7 Kf7 26.Nab5 Kg7 27.Nd6 Kh6 (27...Kg6 28.Nd5 Kg7 29.Be5 Kh6 30.Rg8 b5 31.Nf5 Kh5 32.Nf6) 28.Nf5 (28.0-0-0 Kg7 29.Be5 Kg6 30.Rh1 b5 31.Rg8) 28...Kg5 (28...Kg6 29.Rf8 g3 30.Ne7 Kh6 31.Ne6 gf2 32.Kf2 Kh5 33.Rh1 Kg4 34.Rg8) 29.e4 (29.Rf8 g3 30.Ne6 Kg6 31.Ne7 Kh7 32.Ke2 gf2 33.Rh1) 29...g3 (29...a5 30.Rg8 Kf6 31.Rg7 b5 32.Nd5 Ke6 33.Re7) 30.0-0-0 (30.Rg8 Kf6 31.f4 b5 32.Rg7 b4 33.Be5) 30...gf2 31.Rf1 (31.Rg8 Kf6 32.Rg7 b5 33.Nd5 Ke6 34.Re7) 31...b5 (31...Kg6 32.Rg8 Kf7 33.Rg7 Kf6 34.Nd5 Ke6 35.Re7) 32.Rf2 (32.Be5 Kg6 33.Rg8 Kf7 34.Rg7 Kf8 35.Bd6) 32...a5 (32...b4 33.Rg8 Kf6 34.Nd4 Ke7 35.Rg7 Kd6 36.Rf6 Kc5 37.Na6) 33.Ra5 (33.Rg8 Kf6 34.Be5 Ke5 35.Rg6 b4 36.Re6) 33...b4 (33...Kg6 34.Ra6 Kf7 35.Nh6 Ke7 36.Rf7 Kd8 37.Ra8) 34.Be5 b3 35.Ne6 Kg4 36.Rf4 Kh5 37.Rh4 (37.ab3 Kg6 38.Ne7 Kh6 39.Rh4) 37...Kg6 38.Rh6 Kf7 39.Ra7 Kg8 (39...Ke8 40.Rh8) 40.Rh8 1–0. sirgeshdb – bernhard84, lichess.org, 2020.

3.e3 Nf6 4.Nf3 e6 5.a3 h4 6.Be2 d5 7.h3 c5 8.bc5 Bc5 9.Nc3 Nc6 10.0-0 Kf8 +=.

3.Nf3 c5 4.bc5+/– Nc6 5.d4 e6 6.e4+– Qf6 7.Nc3 Nb4 8.Nb5 Kd8 9.Bc1 a6 10.Bg5 (10...ab5 11.a3+–) 1–0. Wall,Bill – RedLevel, internet, 2000.

3.Nf3 d5 4.a3 h4 5.e3 h3 6.g3 f6 7.d4 a5 8.Be2 ab4 9.ab4 Ra1 10.Ba1 Bf5 +=.

3.Nf3 d5 4.e3 Nf6 5.Bb5 c6 6.Be2 Bg4 7.a3 e6 8.Nc3 Bd6 9.h3 Bf3 10.Bf3 b5 =.

3.Nf3 e6 4.a3 Nf6 5.e3 d5 6.Be2 Bd6 7.0-0 a5 8.b5 Nbd7 9.d3 c6 10.c4 cb5 +=.

3.Nf3 e6 4.e3 Nf6 5.a3 d5 6.Bd3 Bd6 7.0-0 Nbd7 8.c4 dc4 9.Bc4 Nb6 10.Be2 h4 +=.

3.Nf3 Nf6 4.e3 d5 5.Be2 e6 6.a3 Bd6 7.0-0 Nbd7 8.Nc3 a6 9.Nd4 c5 10.bc5 Nc5 +=.

3.Nf3 h4 4.Nc3 h3 5.g4 d5 6.Rg1 e5 7.Ne5 Bb4 8.Rg3 Be6 9.e3 a6 10.f4 Bd6 +=.

3.Nf3 h4 4.e4 h3 5.g3 d5 6.Nc3 de4 7.Ne4 Nf6 8.Bd3 Nc6 9.a3 Bg4 10.Nf6 gf6 =.

3.f4 Rb6 4.a3+= Nc6 (4...d5 5.Nf3+=) 5.e3 a5 (5...g6 6.Nc3 Bg7 7.Rb1 Bc3 8.Bc3+/–) 6.b5+/– d5 7.Qh5 (7.bc6?! Rb2 8.cb7 Bb7=) 7...Na7 (7...e6 8.Qh8 Nf6 9.Ra2+– (9.bc6?! Rb2 10.Nc3 bc6=)) 8.c4 (8.Qh8 Nf6 9.Bd4 Rd6+/–) 8...Rh6 (8...Nf6!? 9.Bf6 ef6+/–) 9.Qd5+– Rd6 (9...Qd5 10.cd5 Bd7 11.Nc3+–) 10.Qe4 (10.Qf3 Rd7+–) 10...Re6 (10...Nf6 11.Qc2+–) 11.Qc2 c6 (11...Rh6 12.Nf3+–) 12.bc6 (12.Nf3 Rh6+–) 12...bc6 13.Nf3 Qb6 (13...c5 14.Nc3+–) 14.c5 Qc7 15.Bc4 (better is 15.Be5 Qd8 16.Nc3+–) 15...Rg6 (15...Rh6+–) 16.Bf7! Kf7 17.Ne5 (17.Ne5 Qe5 18.fe5+–) 1–0. Wall,Bill – Zagor, internet, 2006.

3.f4 e5 4.Be5 Nc6 5.c3=.

3.h3 d6 4.e4 e5 5.a3 Rf6 6.d4 Rf2?? 7.Kf2+– Qh4 8.g3 Qe4 9.Bd3 Qh1–+ 10.Nd2 Qh2 11.Kf1 Bh3 12.Ke1?? Qg1 13.Nf1 Bf1 14.Bf1 Qg3 15.Kd2 Qf4 16.Kc3 Qe3 17.Kc4 d5! 18.Kd5 c6 19.Kc4 b5# 0–1. badboy1221 – MochaH, Live Game Caissa's Web, 2006.

2.Bb2 Nh6

3.c4 d5 4.cd5 Qd5 5.Nc3 Qf5 (5...Qd6 6.Rc1 Bd7 7.Nf3+=) 6.Nf3 e5 7.e3 (7.e4 Qe6+/–) 7...Bb4 (better is 7...c6+=) 8.Be2 (8.Qa4 Nc6 9.Bb5 Bc3 10.Bc6 bc6 11.Bc3 0-0 12.Ne5 Ng4+/–) 8...e4 (8...Nc6 9.Nb5 Kd8 10.Bc3 Bc3 11.dc3 Bd7 12.Rb1–/+) 9.Nd4 (better is 9.Qa4!? Nd7 10.Nh4+/–) 9...Qg6+= 10.0-0? (better is 10.Qa4 Nd7 11.Qb4 Qg2 12.Rf1+/–) 10...Bh3–+ 11.g3 Bf1 12.Qf1 h4 13.Qg2 hg3 14.fg3 Kf8?? 15.Ne4–/+ Be7 16.Nf2 Bf6?? 17.Bd3 Qg5 18.Qb7 Kg8 19.Qa8 Bd8 20.Qb8 g6 21.Nf3 Qe7 22.Bh8 Kh8 23.Kg2 Kg7 24.Qb2 Kh7 25.Qe5 Qa3 26.Ng5 Bg5 27.Qg5 Qc3 28.dc3 c5 29.Ng4 Ng4 30.Qg4 Kg7 31.h4 a5+– 32.Rf1 Kf8 33.Qc8 Ke7 34.Bc4 Kd6 35.Rf7 Ke5 36.Qe6 1–0. Fournier,Frederic (1930) – tama27(C), Active (5/0), 2005.

3.c4 d6 4.d4=.

3.c4 f6 4.e3 e5 5.a3 Nc6 (5...a5 6.b5+=) 6.Nf3 (6.Qh5 Nf7 7.Qe2 d5+/–) 6...Bd6 (6...d6 7.d4+=) 7.c5 Be7 8.Nc3 (8.d4 ed4 9.Nd4 Nd4 10.ed4 h4+/–) 8...d6+= 9.d4 ed4 10.ed4 dc5 11.dc5 Qd1 12.Rd1 Bg4 13.Be2 (13.Nd5 Rc8+/–) 13...Rd8 14.0-0 Rd1 15.Rd1 Nf5 (15...a6 16.Nd5 Bd8 17.h3+–) 16.h3 Bf3 17.Bf3 (17.gf3?! Nfd4+=) 17...Nfd4 18.Bc6 (18.Bd5 a6+–) 18...Nc6 19.Nb5 0-0 20.Nc7+– Kh7 21.Nd5 Rd8 22.Kf1 Ne5 23.Be5 fe5 24.Ke1 Bg5 25.Nc3 Rd4 26.Rd4 ed4 27.Ne2 Bc1?? 28.a4 Ba3+/– 29.Nd4 Bb4+= 30.Ke2 Bc5 31.Ne6 Bb6 32.f3 Kg6 33.Nf4 Kg5 34.Nd5 Bd4 35.Nb4 a5 36.Nc2 Ba7 37.Na3 Kh4 38.Nc4+= Bb6?? 39.Nd6 Kg3+= 40.Kf1 (worse is 40.Nb7 Kg2 41.f4 g6–+) 1–0. Fournier,Frederic (1785) – cocoroco2 (1905), Active (5/0), 2004.

3.e3 d5 4.Qh5 Bf5 5.Nh3 (5.Qd1 f6+=) 5...Bg6 (5...Bc2!? 6.Nf4 Bf5=) 6.Qd1+= e6 7.Bb5 c6 8.Ba4 (8.Be2 Nd7+=) 8...Bb4 (8...Bf5 9.Nf4=) 9.Bg7 Rh7 10.Bh6 (10.Bc3 Bd6 11.f4 Nf5=) 10...Rh6= 11.Nf4 Bd6 (11...Qg5 A) worse 12.Ng6 Qg2 (12...fg6?! 13.g3=; 12...Qg6?! 13.Qf3=; worse 12...Rg6 13.g3+=) 13.Rf1 fg6–+; B) 12.c3 Bd6 B1) worse 13.Ng6 Qg2 (worse 13...Rg6 14.g3+=; 13...Qg6?! 14.Qf3=; 13...fg6?! 14.g3=) 14.Rf1 Qg6–/+; B2) 13.g3 Bf4 14.ef4=+ (14.gf4?? Qg2 15.d3 Qh1 16.Kd2 Qg2–+)) 12.Ng6 Rg6 (12...fg6 13.Nc3=) 13.g3+= Qf6 14.f4?? (better 14.c3+=) 14...Qa1–+ 15.Bb3 (15.Nc3 Qd1 16.Kd1 Nd7–+) 15...Qg7 16.Qh5 (16.d4 Rh6 17.Qe2 Qh7–+) 16...Nd7 17.Nc3 (17.d4 Nf6 18.Qf3 Rh6–+) 17...0-0-0 18.a4 (18.Qf3 Rh8–+) 18...Rh8 19.Qf3 e5 (19...Rh3 20.e4–+) 20.f5 (20.Kd1 e4 21.Qf1 Rgh6–+) 20...Rf6 (20...e4 21.Qg2 Rh2 22.Rh2 Rg3 23.Qf1–+) 21.g4 (21.e4 d4 22.Nd1 Rfh6–+) 21...d4 (better 21...e4 22.Qg2 Rf5–+) 22.Ne4 de3 (better 22...Nc5 23.Nf6 Qf6 24.e4–+) 23.de3?? (23.g5 ed2 24.Ke2 Bb4 25.gf6 Nf6 26.Nf6 Qf6–+) 23...Bb4 (better 23...Rfh6 24.f6 Bb4 25.c3 Rf6 26.Nf6 Bc3 (26...Nf6?! 27.Qf5 Nd7 28.cb4–/+) 27.Ke2 Nf6–+) 24.c3 Ba5?? (better 24...Ba3 25.g5 Rd6–+) 25.Kd2?? (better 25.g5=+) 25...Rd8 (better 25...Rfh6!? 26.h3 Kb8 27.g5–+) 26.Kc2 Rh6 27.g5 Rhh8 (27...Rh4 28.Nd6 Kb8 29.Nf7–+) 28.h4? (better 28.Nd6 Kb8 29.Nf7–+) 28...Nb6 29.f6 Qg6 (29...Qh7 30.Kc1–+) 30.Qg4 (30.h5 Qh7–+) 30...Kb8 31.h5 Qh7 32.Kb2 Nd5 33.Bd5 (33.Qf3 Nc3! 34.g6 fg6 35.Nc3 Bc3 36.Kc3 gh5–+) 33...cd5 (worse 33...Rd5 34.Rf1–+) 34.Nc5 (34.Nf2 Rc8 35.Qd7–+) 34...d4! 35.ed4 (35.cd4 Rd6 Decoy; 35.ed4 Rd6 Decoy) 35...ed4 36.cd4 (36.Qg2 Bc3 37.Kb3=) 36...Rd4?? (better 36...Bb4 37.Nd7 Ka8–+) 37.Qd4+– Rd8? (37...Qf5 38.Rc1 Rd8 39.Qe4 Qe4 40.Ne4+–) 38.Qe5 (38.Qf4 Bc7 39.Qf3 Rd2 40.Ka3 Ra2 41.Ka2 Qc2 42.Ka3 Qc5 43.Kb3 Bd6+–) 38...Ka8 (38...Bc7 39.Qe4 Qe4 40.Ne4 Be5 41.Ka2+–) 39.Kb3 (39.Qe4 Qe4 40.Ne4 Kb8+–) 39...Qg8 (39...Rb8 40.Rc1 a6 41.h6+–) 40.Qe4 (40.h6!? Bb6 41.h7 Qh8+–) 40...Rb8 41.Nd7 (41.h6 Qg5 42.h7 Qc5+–) 41...Rd8 (better 41...Re8 42.Qf5 Re3 43.Ka2 Re2 44.Kb1 Bc3+–) 42.Rd1 (better 42.Qd5 Qe8 43.Rd1 Qe3 44.Qd3 Qe6 45.Qc4+–) 42...a6?? (better 42...Qg5 43.Rd5 Qc1+=) 43.Qd5 (better 43.Rd6 Rd7 44.Rd7+–) 43...Ka7 (43...Qe8 44.Qa5 Rd7 45.Rd7 Qd7+–) 44.Qa5 Qe8 45.Qd5 (better 45.Qc5 Ka8 46.Nb6 Ka7 47.Nc8 Kb8 48.Qa7 Kc8 49.Rc1 Qc6 50.Rc6 bc6 51.Qa6 Kc7 52.Qa7 Kc8 53.Qf7 Rd1+–) 45...Qe3 46.Rd3 Qc1 (46...Qg1 47.Qc5 Qc5 48.Nc5 Rc8+–) 47.Rc3 (47.Qd4 Ka8 48.Nb6 Ka7 49.Qd8 Qb1 50.Kc4 Qc1 51.Rc3 Qf1 52.Kb4 a5 53.Kc5 Qf5 54.Nd5+–) 47...Qa1 (47...Qb1 48.Ka3 Qa1 49.Kb4 Qb1 50.Kc5+–) 48.Qd2 (48.Qd4 Ka8 49.Nb6 Kb8 50.Qd8 Ka7 51.Nc8 Ka8 52.Ne7 Ka7 53.Qd4 b6 54.Qd7 Ka8 55.Rc8) 48...Qb1+– 49.Qb2 (49.Ka3 Qa1 50.Kb4 Qb1 51.Rb3 a5 52.Ka5 Qb3 53.Qd4 b6 54.Qb6 Qb6 55.Nb6=) 49...Qd1 50.Ka3 Qd7 51.Qf2 Kb8 52.Qc2 (better 52.Qf4!? Ka7 53.h6+–) 52...Qd6+= 53.Kb2 1–0. Dino_Jarach (1785) – percagar (1740), lichess.org, 2018.

3.e3 d6 4.c4 (4.Qh5 Nc6+=) 4...e5= 5.d3 (5.Qh5?? Bg4 6.Qh3 Bh3 7.Nh3 Nc6–+) 5...g6 6.Be2 Bg7 7.Nf3 0-0 (7...g5 8.0-0+=) 8.Nc3 a6 9.0-0 Nc6 10.a3 Ne7 (10...Nf5 11.Qc2+=) 11.b5 (11.d4 ed4 12.Nd4 Re8+–) 11...ab5 12.cb5 Bd7 13.a4 c5 14.d4 ed4 15.ed4 cd4 16.Nd4 Re8 17.Bf3 Rb8 (17...Bg4 18.Re1+=) 18.Ba3 (18.Re1 Bg4+–) 18...Nef5+= 19.Nf5 Bf5 20.Bb2 Qf6 21.Qd2 Rec8 (21...Qd4 22.Qd4 Bd4 23.Rfd1=) 22.Rac1 (22.Nd1 Qe6+–) 22...Rc5 (22...Qd4 23.Qg5+=) 23.Rfd1 (better 23.Nd1 Qe7 24.Re1+–) 23...Rbc8? (better 23...Bg4 24.Bg4 Ng4+–) 24.Bb7+– R8c7 (24...Rb8 25.Ba6 Ng4 26.Qd6 Qd6 27.Rd6 Be5+–) 25.Bc6 Bd7 (25...Rc8 26.a5 Qh4 27.Qd6 R5c6 28.bc6 Ng4+–) 26.Rc2 (better 26.Bd7 Rd7 27.Ne4 Qb2 28.Nc5 dc5 29.Qd7+–) 26...Bc6 27.bc6 (better 27.Ne4! Be4 28.Rc5 (28.Bf6?! Rc2 29.Qd6 Bf6 30.Qf6 Rd7=) 28...Qb2 29.Rc7+–) 27...R7c6+– 28.Rdc1 (28.Ne4!? Rc2 29.Nf6 (29.Bf6?? Rd2 30.Nd2 Bf6–+) 29...Bf6 30.Qh6 (worse 30.Bf6 Rd2 31.Rb1 Kh7–+) 30...Bb2 31.Qe3+=) 28...Qe6 29.Ba3 Rc4 30.Qe2?? (better 30.Ne2=) 30...Qe2–+ (30...Rc3?! 31.Qe6 fe6 32.Rc3 Rc3 33.Rc3 Bc3 34.Bd6–+; 30...Bc3?! 31.Qe6 fe6 32.Bb2 Ra4 33.Rc3 Rc3 34.Rc3–+) 31.Ne2 (31.Re2 Bc3 32.Kf1–+) 31...Rc2 32.Rc2 (32.Kf1 Rc1 33.Bc1 Ra6–+) 32...Rc2 33.Kf1 Ra2 34.Bd6 (34.Bc1 Nf5–+) 34...Ra4 (better 34...Ra1 35.Nc1 Rc1 36.Ke2–+) 35.f3 (35.Nf4 Nf5 36.Bc7 Bd4–+) 35...Ra1 36.Kf2 Ra2 37.Ke3 (37.Bc5–+) 37...Nf5 38.Kd3 Nd6 0–1. e4_e5_f4 (1675) – Johncat (1650), lichess.org, 2021.

3.e3 g5 4.Qh5 g4 5.Bd3 Rg8 6.g3 d5 7.Ne2 c6 8.Nf4 Nd7 9.b5 Nf6 10.Qe5 Qd6 11.Qd6 ed6 12.Bf6 Bf5 13.bc6 bc6 14.Bf5 Nf5 15.0-0 a5 16.a4 Ra7 17.Na3 Be7 18.Be7 Ne7 19.c4 Rg5 20.cd5 cd5 21.Rab1 Nc6 22.Rfc1 Rc7 23.Nb5 Kd7 24.Nc7 Kc7 25.Rb2 Rg8 26.Rbc2 Re8 27.Nd5 Kd7 28.Nf6 Ke7 29.Ne8 Ke8 30.Rc6 1–0. riditko – ciesielkaa, kurnik, 2012.

3.e4 d5 +=.

3.Nf3 Na6 4.b5 Nb4 5.c4 a5 6.a3 d5 7.ab4 dc4 8.ba5 Qd5 9.Nc3 Qc5 10.e3 Ng4 11.h3 Nf6 12.Be2 e5 13.0-0 e4 14.Nh2 Bd6 15.g3 g5 16.Ba3 Qe5 17.Bd6 Qd6 18.Qa4 Bh3 19.Rfd1 Ng4 20.Qc4 Nh2 21.Qe4 Kd7 22.Kh2 h4 23.Qd5 hg3 24.fg3 Be6 25.Kg1 Bd5 26.e4 Qg3 27.Kf1 Rh1 0–1. bratek55 (1675) – ionel5507, kurnik, 2012.

2.Bb2 Rh7

3.Nc3+= e6 4.a3+/– Qf6 5.e3+– g5 6.Nf3 g4 7.Nd4 a6 8.Bd3 Rh6 9.f3 gf3 10.0-0 Qg5 11.Qf3 Ra7?? 12.Qf7 Kd8 13.Qf8# 1–0. pierre – kargyl, internet, 2009.

3.g3 g6 4.Nf3 Bg7 5.Qc1 f6 6.Bg2 b6 7.0-0 Bb7 8.d3 h4 9.Nh4 Bg2 10.Ng2 d5 11.Nd2 f5 Black prepares the advance d4 12.e4 d4 13.Nf3 Nf6 14.ef5 gf5 15.c3 Ng4 16.cd4 Bd4 17.Bd4 e5 18.Be5 Ne5 19.Ne5 Nd7 20.Qe3 Kf8 21.Qf4 Ne5 22.Qe5 Rf7 23.f4 Qd3 24.Qh8 Ke7 25.Qa8 Rh7 26.Qc6 Qd4 27.Kh1 Qh8 28.Rae1 Kd8 29.Rd1 Kc8 30.Qa8# 1–0. linakip – jicara, kurnik, 2012.

2.b5 d5

3.e3 e5 4.Nf3 e4 5.Ne5 Bd6 6.Bb2 f6 7.Ng6= Rh6 8.Nf4 g5 9.Nd5+/– c6 10.Ndc3 cb5? 11.Bb5+– Bd7 12.Bc4 Qb6 13.Qc1 Ne7 14.Ne4 Nf5 15.Bf6 Qc7 16.Bd5 Bh2 17.Bg5 Rg6 18.Qd1 Qe5 19.Qh5 Ne7 20.Nbc3 Bf5 21.Nf6 Kd8 22.Qh8 Kc7 23.Rb1 (23.Rb1 Bc8 24.Rh2+–) 1–0. coby – amtex, internet, 2009.

3.e3 Rh6 4.Ba3 Nc6?? (4...Nf6 5.Nf3=) 5.c3?? (5.bc6 bc6 6.d4 Nf6+–) 5...Nf6?? (5...Ne5 6.d4 Bg4 7.f3 Nf3 8.gf3+–) 6.Qa4?? (6.bc6 bc6 7.Nf3 h4+–) 6...Ne4?? (Better is 6...Ne5=) 7.bc6+– bc6 8.d4 Rf6 9.f4 Bb7 10.Be2 a6 11.Bh5 g6 12.Be2 Bh6 13.g3 a5 14.Nf3 g5 15.Ne5 gf4 16.gf4 Qd6 17.Bd6 cd6 18.Ng4 Re6 19.Qb4 ab4 20.cb4 c5? 21.dc5?? Nc5?? 22.bc5+– Ra4 23.Bb5 Kf8 24.Ba4 Rg6 25.h3 Ba6 26.Nc3 dc5 27.Nd5 Bd3 28.Kd2 Bf5 29.Nh6 Rg2 30.Ke1 Be4 31.Nc3 Re2 32.Ke2 Bd3 33.Kd3 e6 34.Rhg1 Ke7 35.Ng8 Kd6 36.Ne4 Kd5 37.Rg5 e5 38.Re5# 1–0. Franziska,Franzi – Henkel,Diana, remoteschach.de, 2002.

2.b5 g5

3.c4 Bg7= 4.d4 c5 5.Bb2 Qa5 6.Bc3+= Qc7 7.e3 g4 (7...cd4 8.ed4 Nf6 9.d5=) 8.Qb3 (8.dc5 Bc3 9.Nc3 Qc5+=) 8...d6 (8...Nf6 9.Bd3=) 9.a4 (better 9.dc5 Nf6 10.cd6 ed6 11.Ne2+–) 9...Be6?? (9...cd4 10.ed4 Bf5 11.a5=) 10.Nd2?? (10.d5 Bc3 11.Qc3 Nf6 12.de6 fe6+–) 10...Nd7?? (10...cd4 11.Bd4 Nf6 12.Ba7=) 11.Bd3?? (better 11.d5 Bc3 12.Qc3+–) 11.b4 Nh6 12.Ne2 Nf5 (12...Bf5 13.d5 Ne5 14.Bf5 Nf5 15.0-0+=) 13.Bf5 (better 13.d5 Ne5 14.Be5 (14.de6?! Nd3 15.Kf1 Bc3 16.ef7 Kf7 17.Qc3 Ne5+=) 14...Be5 15.de6 Ba1 16.ef7 Kf7 17.Bf5+–) 13...Bf5= 14.e4 Bg6 (better 14...cd4 15.Bd4 Bd4 16.Nd4 Bg6=) 15.Nf4 (better 15.d5 Nf6 16.Nf4+=) 15...cd4–/+ 16.Ng6? (better 16.Bb2–/+) 16...dc3–+ (16...fg6?! 17.Bb4–/+) 17.Nh8 cd2 (17...Bh8?! 18.Nf1=+) 18.Kd2 Ba1 (18...Bh8 19.Ra2–+) 19.Ra1 Ne5 (19...Qc5 20.Qe3 Qc4 21.Ke1–+) 20.Rc1 (20.f4 gf3 21.gf3 Nc4 22.Kd3–+) 20...0-0-0 21.Nf7 Nf7 22.Qe3 Kb8 23.f3 (23.b6 ab6 24.f4 gf3 25.gf3 Ne5–+) 23...Ne5 24.f4 (24.b6 ab6 25.Ke2–+) 24...Nc4 25.Ke2 Ne3 26.Rc7 Kc7 27.Ke3 Rf8 (27...Kb6 28.f5–+) 28.f5 (28.a5 a6 29.ba6 ba6–+) 28...Kd7 (better 28...Kb6!? 29.Kd4–+) 29.Kf4 e6 30.h3 (30.Kg5 Ke7–+) 30...gh3 31.gh3 ef5 32.ef5 Ke7 33.Kg5 (33.a5 Kf6 34.Ke3 Kg5–+) 33...Rf6 (33...Rg8 34.Kf4–+) 34.h4 (34.Kf4 d5–+) 34...d5 35.Kf4 Kd6 36.a5 d4 37.Ke4 d3! 38.Kd3 Rf5 39.Kc4 Rf4 40.Kb3 Kc5 41.b6 a6 42.Kc3 Rh4 43.Kd3 Kb5 44.Ke3 Ka5 (44...Rg4 45.Kf3 Rg1 46.Ke4 h4 47.Kf3 h3 48.Kf4 h2 49.Ke3 Re1 50.Kd3 h1Q 51.Kd2 Qe4 52.Kc3 Re2 53.Kb3 Qd3) 45.Kf3 Kb6 46.Kg3 Plans a5 46...Rg4 47.Kf3 Kb5 48.Ke3 White threatens to counter with Rg6 48...Kb4 49.Kd3 a5 50.Kc2 a4 (50...Rd4 51.Kb2 Rd2 52.Kc1 Kc3 53.Kb1 Rd1 54.Ka2 b5 55.Ka3 Ra1) 51.Kb2 (51.Kd2 a3 52.Kd3 a2 53.Kd2 Rd4 54.Ke2 a1Q 55.Kf2 Qb2 56.Ke3 Qc3 57.Ke2 Rd2 58.Kf1 Qc1) 51...a3 (51...Rg2 52.Kc1 a3 53.Kb1 b5 54.Ka1 Kb3 55.Kb1 Rg1) 52.Ka2 (52.Kc2 a2 53.Kb2 a1Q 54.Kc2 Qc3 55.Kd1 Qb2 56.Ke1 Rg1) 52...h4 53.Kb1 Kb3 54.Ka1 (54.Kc1 Rd4 55.Kb1 Rd1) 54…Rg1 0–1. afsharian – TcMariano (1700), lichess.org, 2018.

3.c4 Bg7= 4.d4 c5 5.Bb2 cd4 A) 6.Bd4?? Qa5 7.Nc3 Qc3 8.Bc3 Bc3 9.Qd2 Bd2 (9...Ba1?! 10.Qg5 d6 11.Qc1–/+) 10.Kd2 Nf6–+; B) 6.e3=.

2.b5 h4

3.a4 a6 4.c4 (4.e4 ab5 5.Bb5 c6=) 4...ab5 5.cb5 c6 6.e4 cb5 (6...d5 7.ed5 cd5 8.d4=) 7.Bb5 e6 (7...Nc6 8.d4=) 8.Ba3 (8.Nf3 Nc6+=) 8...Ba3 9.Ra3 Qe7 (9...Nc6 10.Nf3+=) 10.Qb3 Nf6 11.e5 Nd5 12.Nf3 0-0 13.0-0 (13.Nc3 Nc3 14.dc3 d5+=) 13...b6 (13...h3 14.gh3 d6 15.d4=) 14.Nc3 (14.Bc4 Bb7+=) 14...Nc3 15.Qc3 Ba6 (15...h3 16.Rb1+=) 16.Nd4 (16.Ba6 Na6 17.Rb3 Rfc8+=) 16...f6= 17.ef6 (17.f4 Bb5 18.Nb5 Nc6+=) 17...Rf6 (17...Qf6 18.Ba6 Na6 19.Nf3=) 18.Ba6 Na6 19.Nb5 (19.a5 Nc7=) 19...Nc5 (better 19...Nb4=) 20.Rfa1 (20.d4 Ne4 (20...Na4? 21.Qb3+–) 21.Qe3 Nd6 22.Nd6 Qd6=) 20...Ne4 (20...Rf2! 21.d4 Qg5–/+) 21.Qe3 Nf2 22.Qb6 e5 23.Qb7 Rff8 (23...Raf8 24.Qd5 Kh7 25.a5=) 24.Rf3 Ng4 (24...Rf3 25.Qa8 Rf8 26.Qd5 Kh7 27.a5=) 25.Rf8 Rf8 26.a5 (better 26.Qd5 Kh8 27.h3+–) 26...Qc5–/+ 27.d4 Qb4?? (27...Qc2 28.Qd5 Kh8–+) 28.Qd5+– Kh8 (better 28...Kh7 29.Qe4 Kg8+=) 29.a6?? (better 29.Qc5 Qc5 30.dc5+–) 29...Qb2 (29...Qd2 30.Qa2 Qf4 31.Qf7 Rf7 32.g3 Qf2 33.Kh1 Qh2) 30.Qa2 Qc3?? (better 30...Qb5 31.Qa3 Rb8–+) 31.Nc3+– 1–0. afsharian – chakalito, lichess.org, 2018.

3.Bb2 d6 4.e3 e5 5.c4 (5.d4 e4=) 5...h3 (5...Nf6 6.d4 e4 7.Nd2=) 6.Nh3+= a6 (6...Bh3 7.gh3 Nf6 8.Bg2+=) 7.a4 (7.Ng1 ab5 8.cb5 Be6+=) 7...b6 (7...Bh3 8.gh3 Nf6 9.Bg2+=) 8.Nc3 (8.Ng1 Nf6+=) 8...g6 (8...Be7 9.d4+–) 9.Qf3 (9.Ng1+–) 9...c6 (9...Ra7!?+=) 10.bc6+– Qc7 (10...Ra7 11.d4+–) 11.Nd5 Qc6 12.Ng5 (better 12.a5 ba5 13.d4 Bh3 14.gh3+–) 12...Bg7?? (better 12...Ra7+–) 13.Qf7 Kd8 14.Qg7 Rh5 15.Nf7 Ke8 16.Qg8 (16.Qg8 Kd7 17.Qd8 Ke6 18.Qf6 Kd7 19.Qe7) 1–0. DEFFM – GuestTYDR, freechess.org, 2018.

3.e4 b6 4.Bb2 Bb7 5.Nc3 a6 A) 6.a4 ab5 7.ab5 Ra1 8.Qa1 Nf6 9.f3 e6; B) 6.a3 Nf6 7.Qf3 e5 8.Nd5 ab5 9.Bb5 Nd5; C) 6.Nh3 e5 7.ba6 Na6 8.Bc4 Nf6 9.Ng5 d5; D) 6.Nf3= e6 7.Be2 h3 8.g3 ab5 9.Bb5 Nf6.

3.e4 b6 4.Bb2 Bb7 5.Nc3 e6 6.Nf3 Nf6 7.e5 Nd5 8.Nd5 Bd5 9.c4 Bb7 10.h3 d5 11.ed6 cd6 12.Bd3 Nd7 13.0-0 Nf6 14.Re1 Be7 15.Rc1 Rc8 16.Qe2 e5 17.Bf5+/– Rc7 18.d4 e4 19.Ng5 d5 20.cd5 Rc1 21.Bc1 Qd5 22.Be4 Ne4 23.Qe4 Qe4 24.Ne4 0-0 25.Nc5+– Bc5 26.dc5 bc5 27.Re7 Rd8 28.Be3 Bd5 29.Ra7 Ra8? 30.Ra8 Ba8 31.Bc5 1–0. marre – hfvy, internet, 2010.

3.e4 b6 4.Bb2 Bb7 5.f3 A) 5...e6 A1) 6.a4 a6 7.Nh3 d5 8.Bd3 Nf6 9.e5 Nfd7; A2) 6.Nc3 a6 7.Nh3 ab5 8.Bb5 Nc6 9.d4 Ra5; A3) 6.a3 a6 7.Nh3 d5 8.ed5 ed5 9.Nc3 Nf6; A4) 6.d4 a6 7.Nd2 Nf6 8.Nh3 ab5 9.Bb5 Nc6; B) 5...a6= B1) 6.d4 e6 7.Nd2 d5 8.Nh3 de4 9.Ne4 Nf6; B2) 6.Nh3 e6 7.Nc3 ab5 8.Bb5 Nc6 9.d4 Qf6.

3.e4 b6 4.Bb2 Rh5?? 5.Qh5+– g6 6.Qh4 c5 (6...a6 7.Nf3+–) 7.Qh7 Bb7 (7...Nh6 8.Bg7 Bg7 9.Qg7+–) 8.Qg8 Be4 (8...d5 9.ed5 Qd5 10.Nc3+–) 9.Bg7 a5 10.Qf8# 1–0. Taulien,Hans_Juergen – Franziska,Franzi, remoteschach.de, 2001.

3.e4 e5 4.Nf3=.

3.h3 d5 4.Bb2 Bf5 5.e3 Nd7 6.a4 (6.Nf3 Ngf6=) 6...Ndf6 (6...e5 7.Nf3 Qf6 8.a5=) 7.c4 (7.Nf3 e6=) 7...e6 8.cd5 ed5 (8...Nd5 9.Nc3=+) 9.Nf3+= Bd6 10.Be2 Qe7 (10...Qd7 11.0-0+=) 11.0-0 0-0-0 (11...c5 12.bc6 bc6 13.d4+=) 12.d4 (12.a5 Bg6+–) 12...Ne4+= 13.Bd3 (13.a5 Ngf6+=) 13...Qd7 (13...Qe6 14.Ne5 f6=) 14.Be4 (better 14.Ba3!?+=) 14...de4=+ (worse 14...Be4 15.Ba3+=) 15.Ng5? (better 15.Nfd2=+) 15...f6 16.Ne4 Be4 17.Nd2 Bf5 18.Qf3 g5 (18...Bb4 19.Nc4–+) 19.Nc4 (19.e4 Bb4 20.Nc4 Bg6–+) 19...g4 20.hg4 (20.Nd6 cd6 21.Rfc1 Kb8 22.hg4 Bg4–+) 20...Bg4 21.Qf6?? (21.Nd6 cd6 22.Qf4–+) 21...Nf6 22.Nd6 Qd6 23.f3 Bd7 (23...h3 24.Ba3 Qg3 25.Rf2 hg2 26.Rg2 Rh1 27.Kh1 Bf3 28.Raa2 Rh8 29.Kg1 Qe1) 24.e4 Qg3 Black prepares h3 25.Ra2 Rhg8 (25...h3 26.Bc1 Rdg8 27.Bf4 Qf4 28.Re1 Ne4 29.Rc2 Rg2 30.Rg2 h2 31.Kh1 Qf3 32.Re4 Qf1 33.Rg1 hg1Q) 26.Ba3 h3 27.Rff2 hg2 28.Rg2 (28.Ra1 Ne4! 29.Bd6 Qf2 30.Kh2 g1Q) 28...Qe1 29.Kh2 Rh8 0–1. AleksandrNekhoroshik (1660) – Catweazle67 (1655), lichess.org, 2020.

2.c4 g6

3.Bb2 f6 4.d4 Nc6 5.a3 d6 6.e4 Bd7 7.d5 Ne5 8.Be5 fe5 9.Nf3 Qc8 10.c5 Bg4 11.Be2 Nf6 12.Nc3 Bh6 13.a4 Qd7 14.0-0 g5 15.a5 0-0-0 16.Na4 h4 17.b5 Bf3 18.c6 bc6 19.bc6 Qe8 20.Rb1 Be2 21.Qb3 Bf1 22.Qb7# 1–0. diggerdogwoofwoof – pieeater, ChessWorld.net, 2012.

3.Nf3 Bg7 4.d4 d6 5.e4 Nc6 (5...c5!?+=) 6.b5+= Nb4?? (better is 6...Na5+=) 7.a3+– Nc6 8.bc6 bc6 9.Be2 Nf6 10.Nc3 Bg4 (10...c5 11.e5 Ng4 12.ed6 cd6 13.0-0+–) 11.0-0 0-0 (11...c5 12.e5 Nd7 13.ed6 cd6 14.Be3+–) 12.h3 Bf3 13.Bf3 (13.gf3?! c5 14.dc5 Nd7+–) 13...e6 14.Bg5 Qd7 15.e5 de5 16.de5 Nh7 (16...Qd1 17.Rad1 Nh7+–) 17.Qd7 Ng5 18.Bc6 Rab8 (18...Be5 19.Ba8 Bc3 20.Rac1+–) 19.f4 Nh7 20.Qc7 Rbc8 21.Qd7 Rfd8 22.Qb7 Kh8 23.Rad1 Rb8 24.Qf7 Rd1 25.Rd1 (25.Rd1 Rg8 26.Qg6+–) 1–0. toolman – pieeater, ChessWorld.net, 2011.

2.d4 g6

3.Bb2 Bg7 4.e4 d6 5.e5 de5 6.de5 Nc6 7.Qd8 Nd8 8.Nf3 Bf5 9.Bd3 Bd3 10.cd3 Nh6 11.0-0 0-0 12.Nc3 Nf5 13.Nd5 c6 14.Nf4 e6 15.a3 b5 16.Rac1 a6 17.Rfe1 a5 18.ba5 Ra5 19.d4 Ra4 20.h3 Re8 21.g4 hg4 22.hg4 Nh6 23.g5 Nf5 24.Nd3 Bf8 25.Nb4 Bb4 26.ab4 Rb4 27.Ba1 Nb7 28.Rc6 Kg7 29.Nh2 Nd4 30.Bd4 Rd4 31.Rb6 Nc5 32.Rb5 Ne4 33.Nf3 Rc4 34.Kg2 Rd8 35.Rb7 Ng5 36.Nh2 Ne4 37.Re2 Ng5 38.f3 Rc3 39.Kg3 Rdd3 40.Kg2 Nf3 41.Rf2 Ne5 42.Nf1 Kh6 43.Re2 Ng4 44.Rf7 e5 45.Re4 Rc2 46.Kg1 Rd1 47.Rg4 Rcc1 48.Rf6 e4 49.Re4 Kh5 50.Ree6 g5 51.Rh6 Kg4 52.Ref6 Rc2 53.Rf2 Rc3 54.Kh2 Re3 55.Ne3# 1–0. irish paddy – pieeater, ChessWorld.net, 2012.

3.c4 Bg7 4.e4 d6 5.Bb2 Nc6 6.Nf3 Bg4 7.Be2 Qd7 8.a3 0-0-0 9.0-0 f6 10.h3 Bf3 11.Bf3 g5 12.Bh5 e6 13.d5 ed5 14.Bg4 f5 15.Bf5 Bb2 16.Ra2 Be5 17.Bd7 Rd7 18.b5 Nd4 19.ed5 Nf6 20.Nc3 g4 21.a4 gh3 22.g3 Ne4 23.Ne4 Rf7 24.Ng5 Rff8 25.a5 Rfg8 26.Nf7 Rh7 27.Ne5 Kb8 28.Nd3 Rf8 29.Kh2 Nf3 30.Kh1 Ka8 31.Nf4 Kb8 32.Qf3 Rfh8 33.Kh2 Kc8 34.Ng6 Rg8 35.Nf8 Kb8 36.Nh7 Rh8 37.Qf5 b6 38.ab6 cb6 39.Qd7 Rg8 40.Ra7 Rh8 41.Qb7# 1–0. calchess10 – pieeater, ChessWorld.net, 2011.

3.e3 Bg7 4.Be2 d5 5.Nf3 Nf6 6.Ne5 Nc6 7.Nf7 Kf7 8.0-0 Bf5 9.h3 Qd7 10.Bf3 Nb4 11.Nc3 Ke8 12.Ba3 Qd6 13.Qd2 g5 14.Rfe1 Kd7 15.Rab1 a5 16.Nb5 Qb6 17.Nc3 g4 18.Be2 gh3 19.g3 h4 20.g4 Ng4 21.f3 Nf6 22.Bb5 Kd8 23.Kf2 Kc8 24.Rg1 Bh6 25.Qe2 e6 26.Na4 Qa7 27.Rb2 e5 28.Bd3 Bd3 29.cd3 Nc6 30.Qf1 ed4 31.Qh3 Kb8 32.Qh2 Be3 33.Kf1 Qa6 34.Nc5 Qa7 35.Rg7 h3 36.Qc7# 1–0. stefanW – pieeater, ChessWorld.net, 2012.

2.e4 d5

3.ed5 a5 4.b5 Qd5 5.Nc3 Qc5 6.Nf3 +=.

3.ed5 Qd5 4.Nc3 Qd6 5.Nb5 Qe5 6.Qe2?? Qa1–+ 7.Nc7 Kd8 8.Qc4 Qe5 9.Be2 Qc7 10.Qf7 Nh6 11.Qh5 Qc2 12.Ba3 Qb1 13.Bd1 Qe4 14.Ne2 Qg2 15.Rg1 Bg4 16.Qb5 Be2 17.Ke2 Qg1 18.Qb7 Qg4 19.Ke1 Qe6 20.Be2 Qc6 21.Bf3 Qb7 22.Bb7 e6 23.Ba8 Na6 24.Bb2 Nb4 25.a3 Nc2 26.Kd1 Na3 27.h4 Nf5 28.f4 Rh4 29.Be5 Nc4 (30.Bb8 Bd6 31.Ba7 Rh2–+) 0–1. nwishn (1900) – nay (2190), net–chess.com, 2006.

3.ed5 Qd5 4.Nc3 Qe5 5.Be2+/– Bd7 6.Nf3 Qe6 7.0-0 h4 8.Ng5 Qg6+/– 9.Nd5 Na6? 10.Ba6+– ba6 11.Nc7 Kd8 12.Qf3 Kc7 13.Qa8 Qg5 14.d4 Nf6 15.Qa7 Kd8 16.Qb6 Kc8 17.Qa6 Kc7 18.Bg5 (18.Bg5 Ne8 19.b5 Bb5 20.Qa5 Kd6 21.Qb5+–) 1–0. pierre – goalzip, internet, 2009.

3.ed5 Qd5 4.Nc3 Qe6 5.Nge2 Nf6 6.d4 +=.

3.ed5 Qd5 4.Ne2 e5 5.a3 Nf6 6.Nec3=.

3.ed5 Qd6 4.Nc3 Nf6 5.Bc4 Qb4 6.Qe2 +=.

3.ed5 Nf6 A) 4.Nc3 Nd5 5.Nd5 (5.Nf3= Nb4 6.Rb1=+) 5...Qd5 6.Ne2=; B) 4.Bb5 Bd7 5.Bc4 c6 6.dc6+=.

3.Qf3 de4 4.Qe4 Nf6 5.Qc4 e6 6.Bd3 Nc6 7.b5 Ne5–+ 8.Qa4 Nd3 9.cd3 Bd7 10.Ba3 a6 11.Bf8 Rf8 12.Qc4 Bb5 13.Qc5 Bd3 14.Nc3 Qd7 15.Rc1 b6 16.Qe3 c5 17.Qf3 Nd5?? 18.Nd5?? Qd5–+ 19.Rc3 Be4 20.Qe3 Bg2 21.Rd3 Qa2 22.Ke2 Bh1 23.Qf4 c4 24.Rd4 Bd5 25.Qc7 f6 26.Nf3 Rf7 27.Nh4 Rc7 28.Ng6 Kf7 29.Nf4 e5 30.Nd5 ed4 31.Nc7 Ra7 32.Nd5 d3 33.Ke3 c3! 34.Nb6 Qd2 35.Kd4 c2 36.Nd5 c1Q (37.f4 Qf2 38.Ne3 Qfe3 39.Kd5 Rd7#) 0–1. manofsteel5 – DigitalKnight, Live Game Caissa's Web, 2005.

2.e4 e5

3.a3 A) 3...a5 4.b5 Nf6 5.Nc3 Bc5 6.Bc4=; B) 3...Ne7 4.Bb2 d6 5.Nf3 h4 6.h3+=; C) 3...Nf6 4.Nc3 d5 5.ed5 Nd5 6.Bb2=.

3.Ba3 Nf6 4.Nf3 a5 5.b5 Ba3 6.Na3=.

3.Bb2 A) 3...Nf6 4.Nf3 Ne4 5.Ne5 d5 6.Qe2=; B) 3...a5 4.b5 Nf6 5.Be5 Ne4 6.Qe2+=; C) 3...Bb4 4.Be5 Nf6 5.Qf3 Be7 6.Bc4=.

3.Nf3=.

2.e4 g6

3.Bb2 f6 4.d4 d6 5.Bc4 Nc6 6.b5 Nb4 7.Nf3 Bg4 8.c3 Bf3 9.Qf3 Nc2 10.Ke2 Na1 11.Ba1 Qd7 Black claimed a win on time. neruda – pieeater, ChessWorld.net, 2012.

3.Bb2 f6 4.Nf3 d6 5.b5 Bd7 6.a4 e5 7.Bc4 Qe7 8.Nc3 Bg4 9.Nd5 Qd8 10.0-0 Nd7 11.h3 Be6 12.d4 Ne7 13.de5 de5 14.Nc7 Qc7 15.Be6 0-0-0 16.Qe2 g5 17.c4 Kb8 18.Rfc1 g4 19.Nh4 gh3 20.Bh3 Bh6 21.Rc2 Nc5 22.Rc3 Rhg8 23.Qh5 Ne4 24.Rc2 Bg5 25.Nf5 Nf5 26.Bf5 Nc5 27.a5 Rh8 28.Qf3 Rh4 29.g3 Rh6 30.Bc3 Rdh8 31.b6 ab6 32.ab6 Qb6 33.Rb2 Qc7 34.Rb5 Rh2 35.Rab1 Rh1 36.Qh1 Rh1 37.Kh1 Qc6 38.Kg1 Kc7 39.Ba5 Kb8 40.Bb6 Ne4 41.Be4 Qe4 42.Be3 Be3 43.Rb7 Kc8 44.Rb8 Kd7 45.R1b7 Ke6 46.Re8 Kf5 47.Reb8 Bd2 48.c5 Ba5 49.Rb3 Qe1 50.Kg2 Qe4 51.Rf3 Ke6 52.Rf8 f5 53.R8f5 Kd5 54.Kh3 Kc5 55.Rf6 Bd2 56.Kg2 Kd5 57.Kh3 Qh7 58.Kg2 e4 59.R3f5 Kd4 60.Rd6 Kc3 61.Rc5 Kb4 62.Rdd5 e3 63.fe3 Qe4 64.Kh3 Qh1 Draw agreed ½–½. katabla – pieeater, ChessWorld.net, 2012.

3.Bb2 Nf6 4.Nf3 Bg7 5.Bc4 (5.e5 Nd5 6.Nc3 Nb4= 7.Bc4 N8c6 8.a3 Na5 9.Bf7 Kf7 10.ab4 Nc4) 5...d6 (5...Nc6 6.0-0 Nb4 7.Re1 0-0 8.Nc3 d6 9.h3 Be6 10.Be6 fe6) 6.Nc3 (6.Ng5 0-0= 7.0-0 Nc6 8.Nc3 Nb4 9.a3 Nc6 10.Qf3 Ne5; 6.0-0 Nc6 7.b5 Na5 8.Bd3 Be6 9.Ng5 0-0 10.Nc3 Ng4) 6...Bg4 (6...Ne4!? 7.Qe2 (7.0-0 Nc6 8.b5 Na5 9.Bd5 Nc3 10.Bc3 Bc3) 7...Nc3 8.Bc3 Bc3 9.dc3 Nc6+= 10.0-0 0-0) 7.h3+= Bd7 (7...Bf3!? 8.Qf3 Nc6+= 9.Nd5 0-0 10.0-0 Nd5) 8.e5 de5 (8...Nh7 9.b5 0-0 10.Qe2 de5) 9.Ne5 Be6 (9...e6!? 10.b5 Bc8+/–; 9...Rf8 10.0-0 Nc6) 10.Be6+– fe6 11.Ng6 Rh6 (11...Rg8 12.0-0+–) 12.Nf4 e5 (12...Qd6 13.Qf3 Na6 14.0-0+– (14.Qb7?! Rb8 15.Qa7 Nd7+–)) 13.Ne6 Qd6 (13...Qd7 14.Ng7 Kf7 15.Nh5 Rh5+–) 14.Ng7 Kf7 15.Nf5 Qc6 (15...Qb4 16.Nh6 Kg6 17.Nf5 Kf5 18.Ba3+–) 16.Nh6 Kg6 17.Qe2 (better is 17.d4 ed4 18.Qd4 Qe6 19.Kf1+–) 17...Qg2 (17...Kh6 18.Qe5 Qg2+–) 18.0-0-0 Kh6 19.Rdg1 Qc6 20.Qe5 Nbd7 21.Qg5 (21.Qg5 Kh7 22.Qg7#) 1–0. mrkt – baronszu, internet, 2011.

3.Bb2 Rh7 4.d4 Bg7 5.Nf3 Nf6 6.Ng5 Rh8+= 7.Bd3 Ng4 8.0-0 b5? 9.Qf3 Kf8?? 10.Qf7# 1–0. Trkn – IrishPrincess, itsyourturn.com, 2001.

3.c3 Bg7 4.a3 d6 5.Bc4 Nc6 6.Ba2 Be6 7.Be6 fe6 8.g4 h4 9.Nf3 Qd7 10.Ng5 Nh6 11.Qf3 0-0-0 12.d4 Rhf8 13.Qd3 Ng4 14.Be3 e5 15.Bd2 Nf2 16.Qf1 ed4 17.Rg1 dc3 18.Bc3 Ne4 19.Qd3 Nf2 20.Qg6 Bc3 21.Nc3 Nd4 22.Ra2 e5 23.Rf2 Rf2 24.Kf2 Rf8 25.Kg2 Qg4 26.Kh1 Qf4 27.Nd5 Qf2 28.Ne4 Qf3 29.Qg2 Ne2 30.Qf3 Rf3 31.Rg8 Kd7 32.Rg7 Kc6 33.Nc7 Re3 34.Nf2 Ra3 35.h3 Ra1 36.Kg2 Rg1 37.Kf3 Rg7 38.Ne6 Nd4 39.Ke4 Ne6 40.Kf5 Nd4 41.Kf6 Rg3 42.Ke7 Nc2 43.Ne4 Rh3 44.Nd6 Nb4 45.Ke6 a5 46.Ke5 a4 47.Nc4 b5 48.Na3 Ra3 White resigned 0–1. Eries – pieeater, ChessWorld.net, 2012.

3.d4 Bg7 4.e5 d6 5.Nf3 Nc6 6.Bf4 Bf5 7.Bb5 a6 8.a4 ab5 9.Qc1 e6 10.ed6 cd6 11.Nc3 Nb4 12.Qd2 Nf6 13.Nb5 Nbd5 14.c4 Nf4 15.Qf4 e5 16.de5 de5 17.Qe5 Be6 18.Rd1 Qa5 19.Kf1 0-0 20.Ng5 Qa4 21.Ne6 Qc4 22.Kg1 fe6 23.h3 Kf7 24.Nd6 Ke7 25.Nc4 Rac8 26.Qd6 Kf7 27.Ne5 Kg8 28.Ng6 Rf7 29.Qe6 Re8 30.Qb3 Ne4 31.Re1 Bd4 32.Re4 Bf2 33.Kf1 Re4 34.Nf4 Ref4 35.Ke2 Re4 36.Kd1 Rd4 37.Kc2 Kg7 38.Rd1 Rc7 39.Kb2 Rd1 40.Qd1 b5 41.Qh5 Bd4 42.Kb1 b4 43.Qg4 Kh7 44.Qd4 Black resigned 1–0. wee harv – pieeater, ChessWorld.net, 2012.

3.d4 Bg7 4.Nf3 d6 5.Bd3 Nc6 6.Bb5 Bd7 7.a3 Qc8 (7...a6 8.Bc4+=) 8.Bb2 (8.0-0 a5+=) 8...e6 (8...a5 9.ba5 Na5 10.Bd3+=) 9.Nbd2. icreatefun – pieeater, ChessWorld.net, 2011.

3.g4 Bg7 4.c3 b6 (better 4...hg4!? 5.Qg4 d5–/+) 5.g5= Bb7 6.Bg2 d5 7.f3 (7.Qa4 Bc6 8.Qc2 de4 9.Be4 Be4 10.Qe4 Nd7=) 7...de4 (7...e5 8.d3=) 8.fe4 f6 (8...Qd3 9.Nh3=) 9.h4 (9.d3 a5 10.b5 Nd7=) 9...fg5 (9...Qd6 10.Ne2 e5 11.d4=) 10.hg5 Nc6 (better 10...a5 11.ba5 Ra5=) 11.d4 (11.b5 Na5=) 11...e6 (better 11...Nd4 12.Rh3 Nc6–/+) 12.e5 Nce7?? (better 12...Qd7+=) 13.Bb7+– Rb8 14.Qf3 (14.Qa4 c6 15.Bc6 Nc6 16.Qc6 Qd7 17.Qd7 Kd7+–) 14...Nf5 Black prepares the advance h4 (14...Qd7 15.Be4 c5 16.Ne2+–) 15.Bc6 Ke7 (15...Kf7 16.Ne2+–) 16.b5 h4 (16...Kf7 17.Nh3+–) 17.Ba3 Kf7 18.Nh3 (18.Qg4 Nge7 19.Be7 Qe7+–) 18...Nge7 19.Nd2 (19.Be4!? Qe8 20.Nf4 Rc8+–) 19...Nc6 20.bc6 Ke8 (20...a5 21.Ne4+–) 21.0-0-0 (21.Nf4 Kf7+–) 21...Ng3 (21...Qc8 22.Nf4 Qa6 23.c4 Nd4 24.Qd3 Be5 25.Ne6 Qa3 26.Qa3 Nc6 27.Rhe1+–) 22.Rhe1 (better 22.Rdf1 Nf5 23.Nf4 Kf7+–) 22...Rf8 (22...Bf8 23.Bf8 Rf8 24.Qg4+–) 23.Qg2 (23.Bf8 Bf8 24.Ne4 Nf5+–) 23...Qc8 (23...Rf7+–) 24.Bf8 Bf8 25.Nf4 Ba3 26.Kb1 Qa6 (26...b5 27.Ng6 b4 28.c4+–) 27.Nb3 (27.Qf3 Nf5 28.Ne6 Rc8+–) 27...Qb5 (27...Qc4 28.Qf3 Rd8 29.Ng6+–) 28.Ng6 (28.Ne6 Rc8+–) 28...a5 (28...Nf5 29.Qf3 Rd8 30.Nh4+–) 29.Nh4 (29.Qf3 a4 30.Nh8 Nf5 31.Qh5 Kd8+–) 29...a4 30.Qc2 (30.c4 Qc4 31.Qg3 Qc6+–) 30...ab3 (30...Nf5 31.Nf5 ab3 32.Ng7 Ke7 33.ab3 Qc6 34.Qg6+–) 31.Qb3 (31.Qg6 Kf8 32.Qf6 Kg8 33.Qe6 Kg7 34.Qg6 Kf8 35.Rf1 Qf1 36.Rf1 Nf1 37.Qf6 Ke8 38.Qe6 Be7 39.Ng6 Nd2 40.Kc1 b2 41.Kb2 Nc4 42.Kc1 Ne5 43.Qe7) 31...Qb3 32.ab3 Ra8 (32...b5 33.Re3 Nh5 34.b4+–) 33.Re3 Nh5 (33...Nf5 34.Nf5 ef5 35.Rf3+–) 34.Rf3 Ke7 (34...Ra6 35.Rh1 b5 36.Ng2+–) 35.g6 (35.Ng6 Ke8 36.Rdf1 Nf4 37.Rf4 b5 38.Rf8 Bf8 39.Rf8) 35...Rg8 (35...Rf8 36.Rdf1 Ke8 37.b4 Rf3 38.Nf3+–) 36.Rf7 Ke8 (36...Kd8 37.Rd7 Kc8 38.Kc2+–) 37.Rc7 Nf4 (37...Kd8 38.Ra7 Rg7 39.Ra3+–) 38.g7 (better 38.Rc8 Ke7 39.Rg8 Nh5 40.Rf1 Nf4 41.Rf4 Bb2 42.Rf7) 38...Rg7 39.Rg7 (39.Rg7 Kd8 40.Rf1 Nh5 41.Rd7 Ke8 42.Rff7 Nf6 43.ef6 Bd6 44.c7 Bc7 45.Rde7 Kd8 46.Rf8) 1–0. afsharian – pie70, lichess.org, 2018.

2.e4 h4

3.a3 A) 3...d5 4.ed5 Qd5 5.Nc3 Qe6 6.Be2+=; B) 3...d6 4.Nc3 e5 5.Nf3 h3 6.g3=; C) 3...e5 4.Nc3 d6 5.Bc4 Nd7 6.Nf3=.

3.b5 a5 4.Nc3+– e6 5.Nf3 Bb4 (5...d5 6.ed5 ed5 7.Bd3 Qe7 8.Qe2 Qe2 9.Ne2+=) 6.a3 Bc3 7.dc3 Nf6 (7...d5!?+–) 8.e5+– Ne4 (8...Nd5 9.c4 Ne7 10.Bg5+–) 9.Qd4 d5 (9...f5 10.Bd3 c5 11.Qe3+–) 10.ed6 Qd6? (10...Nf6 11.dc7 Qc7+–) 11.Qe4 Nd7 12.Bf4 (12.Nh4?! Nf6 13.Qf4 Qc5+–) 12...Qc5 13.Qd4 (better 13.c4 Rh5+–) 13...Qf5 (13...f6 14.Bc4 g5 15.Qc5 Nc5 16.Bc7 e5+–) 14.Qg7 Rf8 (14...Rh5 15.Bc7 Qc2 16.c4+–) 15.Bc7 Qe4 (15...Qc5 16.Bf4 e5 17.Be5 Ne5 18.Qe5 (worse 18.Ne5 Qc3 19.Ke2 Qa1=+) 18...Qe5 19.Ne5+–) 16.Be2 Qc2 (16...Qg6 17.Qg6 fg6 18.0-0-0+–) 17.Bd6 Nf6 (17...Qg6 18.Bf8 Nf8+–) 18.Qf8 Kd7 19.Ne5 1–0. Leonco – Secter, internet corr, 2018.

3.b5 a6 4.Nf3=.

3.b5 d6 4.Nc3 h3 (better 4...Nf6!?=) 5.Nh3+– Bh3 6.gh3 Nf6 7.Bg2 c6 8.Rb1 d5 (8...Nbd7!?+–) 9.bc6+– bc6 10.d4 Qa5 11.Bd2 Ne4?? (better 11...de4 12.0-0 Nbd7+–) 12.Ne4 Qa2 (12...Qc7 13.Nc5 e5 14.Rb7+–) 13.Nc3 Qc4 14.Qg4 Nd7 (14...Qa6 15.Nd5! cd5 16.Bd5 Nd7 17.Ba8 e6+–) 15.Bf1 Nf6 (15...Ne5 16.de5 Qg4 17.hg4 e6+–) 16.Qf4 e5 17.Qe5 (17.Qe5 Be7 18.Bc4+–) 1–0. Janek – terfig, internet, 2017.

3.b5 h3 4.Nh3+– d6 (better 4...d5!? 5.d4 de4+=) 5.Ng5+– Nd7 (5...e6 6.d4+–) 6.d4 (6.Nc3 d5 7.d4 Nb6+–) 6...Ndf6 (6...e6 7.Nc3+–) 7.Nc3 Bg4 8.f3 Bh5 9.h4 Qd7 (9...Bg6 10.g4+–) 10.g4 Bg6 11.h5 Bh7 12.e5 de5 13.de5 Qd1 14.Kd1 0-0-0 (14...Rd8 15.Bd2 Nd7+–) 15.Bd2 Nd5 (15...Ng4 16.fg4 Nh6 17.e6+–) 16.Nd5 Rd5 (16...Nh6 17.Nf4 e6 18.Nh7 Rh7 19.Bd3+–) 17.Nf7 Nh6 (17...Nf6 18.Nh8 Re5 19.Ng6 Bg6 20.hg6+–) 18.Nh8 g5 (18...e6 19.Bc4 Re5+–) 19.hg6 Bg7 20.gh7 Bh8 21.Rh6 Be5 22.Rh5 Rd2 23.Kd2 Ba1 24.c3 Bc3 (24...c6 25.h8Q Kc7 26.Qe5 Kd7 27.Rh8 Bc3 28.Kc3 b6 29.bc6 Kc6 30.Bb5 Kb7 31.Qe7) 25.Kc3 (25.Kc3 c6 26.h8Q Kd7 27.Qb8 a5 28.Rf5 cb5 29.Bb5 Ke6 30.Qe5) 1–0. Faygan – Inferno, internet private, 2018.

3.Nc3 c6 4.Nf3 h3 5.gh3 d5 6.Bb2 de4 7.Ne4 Nf6 8.Neg5+–.

3.Nc3 c6 4.Nf3 h3 5.gh3 d5 6.Bb2 f6 7.Rg1 (7.ed5 cd5 8.Qe2 e6+–) 7...Bh3 8.Qe2 (8.ed5 cd5 9.Bh3 Rh3+=) 8...d4+= 9.Nd1 (9.Na4 Bf1 10.Qf1 e5+=) 9...Bf1 10.Qf1 e5 11.Qc4 b5 12.Qe6 Ne7 13.a4 Qd7 14.Qd7 Nd7 15.ab5 cb5 16.c3 d3 17.Ne3 Nb6 18.Rg4 (18.Kf1 Kf7=) 18...g5 (18...Kf7 19.Kd1=+) 19.0-0-0 (19.h4 gh4 20.Rh4 Rh4 21.Nh4 Bh6=) 19...Nc4 20.h4 gh4 21.Nh4 a5 22.Nc4 bc4 23.f4 Kd7 24.fe5 fe5 25.Nf3 Rh5 26.Rf1 Bh6 27.Rgg1 Ke6 28.Ba3 ab4 29.Bb4 Ra1 30.Kb2 Rf1 31.Rf1 Nc6 (31...Ng8 32.Ra1=) 32.Ka3 Rh3 (32...Nb8 33.Ka4 Nd7 34.Kb5+=) 33.Ka4+= Nb4 (better 33...Rg3!?+=) 34.Kb4+– (34.cb4?? Rf3 35.Rf3 Bd2–+) 34...Bf4 35.Kc4 Rh8 36.Kd3 Rd8 37.Kc2 Ra8 38.Rg1 Kf6 39.Rg4 Ra2 (39...Bh6 40.d4 ed4 41.cd4+–) 40.Kb3 Ra8 (40...Ra1 41.d4+–) 41.d4 Rc8 42.Rh4 Kg6 (42...Rf8 43.Kc4+–) 43.Ne5 (43.Ne5 Be5 44.de5+–) 1–0. Dalia – Rebford, internet, 2019.

3.Nc3 c6 4.Nf3 h3 5.gh3 d5 6.Bb2 Bh3 7.Bh3 Rh3 8.Ng5 Rh8 (8...Rh4 9.Qf3 Nh6 10.h3 de4 11.Nce4=) 9.Qf3 f6? (better 9...Nh6+–) 10.Ne6+– Qd6 (10...Qd7 11.ed5 cd5 12.Qd5+–) 11.ed5 Nd7 (11...cd5 12.Qd5 Na6+–) 12.Ne4 Ne5 (12...Qb8 13.0-0-0 Nh6+–) 13.Nd6 (13.Nd6 ed6 14.Be5 de5 15.dc6+–) 1–0. Pierre (2250) – Phoenix (2030), internet, 2018.

3.Nc3 e6 4.a3=.

3.Nc3 g5 4.Bb2 (4.d4 e5 5.a3 ed4 6.Qd4 f6+=) 4...Bg7 5.Nh3 a5 (5...Bf6 6.Bc4=) 6.b5 (< 6.Ng5 Bf6 7.Na4 ab4=+) 6...d6 (better is 6...e5!?=) 7.Ng5+/– e5 8.Nd5?? (better is 8.Nf3+/–) 8...c6–/+ 9.bc6 (9.Qf3 Nh6 10.bc6 bc6–/+) 9...bc6 10.Nf7 Kf7 11.Bc4 cd5?? (better is 11...Ke8 12.Ne3 h3–/+) 12.Bd5+/– Be6 13.Ba8 Nd7 14.Bd5 Nc5 15.0-0 Bd5+/– 16.ed5 Qg5 17.f4 ef4 18.d4 Ne4 19.Qf3 Ngf6 20.Qf4 Qf4= 21.Rf4 Bh6 22.Rf3 Rg8 23.Re1+= Nd2 24.Rf2 Kg7? 25.Bc1+– Nfe4 26.Bd2 Bd2?? 27.Re4 Rf8 28.Rg4 (28.Rg4 Bg5 29.Rg5 Kh6 30.Rg4 Rf2 31.Rh4 Kg7 32.Kf2+–) 1–0. marre – eaww, internet, 2010.

3.d4 c6 4.Nf3 h3 5.g3 Nf6 6.Bd3 +=.

3.d4 d5 4.ed5 Qd5 5.Nc3 Qd8 6.Be3=.

3.d4 e5 4.a3 ed4 5.Nf3 Qe7 6.Qd4=.

3.d4 e5 4.de5 Bb4 5.c3 Bc5 6.Ba3=.

3.d4 e5 4.Nf3 ed4 5.a3 Qe7 6.Qd4=.

3.Nf3 A) 3...e6 4.c3 d5 5.e5 Be7 6.d4+=; B) 3...d5 4.Nc3 Nf6 5.e5 Ne4 6.Nb1+=; C) 3...h3 4.d4 Nf6 5.e5 Ne4 6.g3+=.

3.h3 e5 4.Nf3 Qf6 5.Bc4 Bb4 6.c3 Bc5 7.d3 Nc6 8.d4 ed4 9.cd4 Nd4 10.Bb2 Nf3 11.gf3 Qb2 12.Nd2 Bd4 13.Rb1 Qa3 14.Nf1 d6 15.Qd4 Qa5 16.Qd2 Qc5 17.Rc1 Qh5 18.Be2 g5 19.f4 Qh6 20.fg5 Qg6 21.f4 Qe4 22.Rh2 f6 23.Rc4 Qb1 24.Bd1 Qb6 25.Qe2 Kd8 26.gf6 Nf6 27.Rf2 Bd7 28.Rf3 Qa5 29.Kf2 c5 30.Qc2 Nd5 31.Ne3 Bc6 32.Nd5 Bd5 33.Ra4 Qb6 34.Re3 c4 35.Qd2 Rh5 36.Bh5 Kc7 37.Qd5 Qb2 38.Re2 Qc3 39.Re7 Kb6 40.Rb7# 1–0. dunk0104 – pmcl1971, ChessWorld.net, 2012.

2.e4 Rh6

3.b5 Rb6 4.d4 Rb5?? (Better is 4...d5 5.ed5 Qd5+=) 5.Bb5+– Nf6 6.f3 g6 7.Nh3 Bh6 8.Bh6 e5 9.de5 Qe7 10.ef6 Qf6 11.c3 Qc3 12.Nc3 a6 13.Ba4 b6 14.Nd5 c6 15.Nf6 Ke7 16.Ng8 Kd8 17.Ng5 Kc7 18.Nf7 b5 19.Bb3 a5 20.Qd6 Kb6 21.Ne7 Ra7 22.Nc8 Ka6 23.Qb8 a4 24.Bc2 Ka5 25.Qa7 Kb4 26.Bd2 Ka3 27.Bc1 Kb4 28.Qd7 Kc3 29.Bd1 Kc4 30.Qc6 Kd4 31.Qb5 Kc3 32.Qa4 h4 33.Qa3 Kd4 34.Ncd6 g5 35.Ng5 h3 36.Nh3 Ke5 37.Qc5 Kf6 38.Ne8 Kg6 39.f4 Kh6 40.f5 Kh7 41.Qc7 Kh8 42.Qg7# 1–0. Franziska,Franzi – Bia,Bianca, remoteschach.de, 2002.

3.b5 Re6 4.Nc3 Nf6 5.d3=.

3.d3 d5 4.Bh6+– Nh6 5.ed5 (5.Qh5 de4 6.de4 Qd4+–) 5...Qd5 6.Nc3 (6.c3 Bg4 7.Qb3 Qb3 8.ab3 e5+–) 6...Qd8 (6...Qd4 7.Qd2+–) 7.d4 (7.Qh5 Nc6 8.a3 a5+–) 7...Nc6 (7...e5!? 8.de5 Bb4 9.Qd8 Kd8 10.0-0-0 Nd7+–) 8.d5+– Nb4 9.a3 Na6 10.Ba6 ba6 11.Rb1 (11.Qh5!? e6+–) 11...Bg4 (11...e6 12.Qf3+–) 12.Nge2 (12.Qd3 e6+–) 12...e5 (12...e6 13.Qd4+–) 13.h3 Be2 (13...Bd7!?+–) 14.Qe2+– (worse 14.Ke2 Ba3 15.Re1 Qh4+–) 14...Ba3 15.0-0 f6 (15...Qd6 16.Rfe1 g6 17.Rb3+–) 16.Rb7 (16.Qh5 Nf7+–) 16...Rb8 (16...Bc5 17.Qh5 Nf7 18.Rd1+–) 17.Rb8 Qb8 18.Qa6 Bd6 19.Rb1 Bb4 (19...Qd8+–) 20.Qa4 Kf7 21.Rb4 Qb4 (21...Qd8+–) 22.Qb4 Ng4 23.hg4 f5 24.Qb8 Kf6 25.Qf8 Kg6 (25...Kg5 26.Qf5 Kh4 27.Qh5) 26.Qf5 Kh6 27.Qh5 1–0. Intruder – snc9830g, internet free game, 2018.

3.d3 Re6 4.g3 Nf6 5.Bg2 b5 6.Nf3 Na6? 7.0-0 Nb4 8.Ng5 Rc6 9.e5 Rc2?? 10.Ba8 Ra2 11.Qb3 e6 12.Ra2 Na2 13.Qa2 d5 14.ef6 gf6 15.Nh7 Bg7 16.Nc3 Bd7 17.Qa7 f5 18.Bg5 Qc8 19.Bb7 Bc3 20.Bc8 Bc8 21.Qc7 e5 22.Qd8# (22.Qc8#) 1–0. Cavanagh,Philip – diesel3us, Yahoo! Chess, 2001.

3.d3 Rh8!?+=.

3.d4 Rb6 4.c3+=.

2.Nf3 d5

3.a3 Nf6 4.d4 h4 5.h3=.

3.Bb2 f6 4.Nd4 (4.d4 e5 5.de5 Bb4 6.Bc3 c5=) 4...Kd7 (better is 4...e5!? 5.Nf3 Bb4–/+) 5.Nf3 h4 6.a3 h3 7.Bf6?? (better is 7.d4+=) 7…gf6 0–1. Peters,Charles William – Dobrin,Doron (1870), IECC, 2000. (=1.Nf3 h5 2.b4 d5)

3.Bb2 Nf6 4.a3 h4 5.h3=.

3.d4=.

2.Nf3 e6

3.a3 d5 4.d4 Nd7 5.Nbd2=.

3.Bb2 Nf6 4.a3 Be7 5.Nc3=.

3.Bb2 Nf6 4.b5 b6 5.e3 Bb7 6.Bf6 (6.Be2!?+=) 6...Qf6+= 7.d4 Bf3 8.Qf3 Qf3 9.gf3 Bb4 (9...a6 10.Rg1+=) 10.c3= Be7 11.f4 g5 (11...a6!?=) 12.fg5+= Bg5 13.Bg2 c6 14.Nd2 d5 (14...Be7 15.Rg1+=) 15.bc6 (15.c4!? Kd7 16.bc6 Kd6 17.Nf3+/–) 15...Nc6+= 16.c4 Nb4 17.0-0 (17.cd5 Nd5 18.Bd5 ed5+=) 17...Rd8 18.a3 (18.Rfc1 a6+=) 18...Nc6 (better is 18...Nc2!? 19.Ra2 Ne3 20.fe3 Be3 21.Kh1 dc4 (worse is 21...Bd4 22.cd5 h4 23.Nb3+/–) 22.Nc4 Bd4=) 19.cd5+/– ed5 20.Rac1 (better is 20.Ra2!?+=) 20...Nd4+= 21.ed4 Bd2 22.Rc7 Ba5 23.Ra7+= Rg8 24.Kh1 Kf8 25.Rc1 Kg7 26.Rcc7 Rdf8? 27.Bd5+– Kh8 28.Bf7 Rg7 29.d5 Rd8 30.Be6 Rc7 31.Rc7 Be1 32.Kg2 Rf8 33.f3 h4 34.d6 h3 35.Bh3 Rg8 36.Bg4 Bd2 37.d7 Bg5 38.Rc8 1–0. bluepiramid2 (1700) – oponent, kurnik, 2012. (=1.Nf3 h5 2.b4)

2.Nf3 Nf6

3.Bb2 d5 4.a3 h4 5.h3=.

3.c4 e6 4.a3 Be7 5.d4=.

2.Nf3 g6

3.Bb2 f6 (--> 1.b4 g6 2.Bb2 f6 3.Nf3 h5).

3.c4 Bg7 4.d4 Nc6 5.Bb2 (5.b5 Na5 6.e3 c5+=) 5...d6 (5...Nb4 6.e4+=) 6.e4 (6.b5 Nb8+=) 6...Bg4 7.Be2 Qd7 (7...Nb4!? 8.0-0 Rb8=) 8.a3 0-0-0 9.Nc3 (9.b5 Nb8 10.Qa4+/–) 9...f6?? (better is 9...Bf3 10.Bf3 Nd4+=) 10.d5+/– Ne5 11.Ne5 de5? (better is 11...Be2!? 12.Qd4 fe5 13.Qa7 Qg4 14.Ne2 Qg2+–) 12.f3+– Bf3 13.Bf3 g5 14.g4 h4 15.h3 Re8 16.0-0 e6 17.a4 ed5 18.ed5 Ne7 19.c5 f5 20.d6 Nc6 21.dc7 Qc7 22.Nb5 Kb8 23.Nc7 Kc7 24.b5 Nb4 25.Bc3 fg4 26.Bg4 Rhg8 27.Bb4 e4 28.Qd6# 1–0. Haroldlee123 – pieeater, ChessWorld.net, 2012.

2.h4 g6

3.Bb2 f6 4.e4 Nc6 5.a3 d6 6.Nf3 Bg4 7.Be2 Qd7 8.Nh2 Be2 9.Qe2 (worse 9.Ke2 d5=+) 9...0-0-0 10.Nc3 (10.b5 Ne5+=) 10...f5 (10...e6 11.Nf3=) 11.Qe3 (11.Nf3 Bg7=) 11...Bh6 12.Qd3 e5 13.Nd5 f4 (13...Nce7 14.Nf3=+) 14.0-0-0 (14.Nf3 Nce7+=) 14...Nge7 15.Nf6 Qe6 16.Nd5 Rhf8 17.Qc4 (better 17.Rhg1=) 17...g5?? (better 17...Nd5 18.Qd5 Qd5 19.ed5 Ne7=+) 18.Nb6!+– cb6 A pinning theme (18...ab6 19.Qe6 A double attack) 19.Qe6 Theme: Double Attack 19...Kc7 (19...Kb8 20.Qh6 gh4 21.b5+–) 20.Qh6 Nd4 21.Bd4 ed4 22.Nf3 g4 23.Ng5 (better 23.Nd4 Kc8+–) 23...Rfe8 24.Ne6 Kd7 25.Nd8 Kd8 26.Qd6 Kc8 27.Qf4 a6 28.Qe5 b5 29.Qe6 Kc7 30.Qh6 (better 30.e5 g3+–) 30...Nc6 31.Rde1 (31.Rde1 Re5 32.f4 gf3 33.gf3+–) 1–0. gordiemac – pieeater, ChessWorld.net, 2012.

3.d4 d6 4.e4 Nc6 5.c3 Nf6 6.f3 d5 7.e5 Nd7 8.Bb5 a6 9.Bc6 bc6 10.Ne2 Bg7 11.Bg5 0-0 12.g4 Rb8 13.gh5 a5 14.ba5 Rb2 15.hg6 fg6 16.f4 c5 17.Ng3 cd4 18.Qd4 c6 19.h5 Kh8 20.hg6 Kg8 21.c4 dc4 22.Nh5 Rg2 23.Ng7 c5 24.Qe4 Rg3 25.Ne6 Qe8 26.g7 Rf7 27.Qh7# 1–0. pmcl1971 – pieeater, ChessWorld.net, 2012.

3.e4 Bg7 4.c3 d5 5.Qf3 e6 (5...de4 6.Qe4 Nf6 7.Qf3=+) 6.Bb2 (6.d4 de4 7.Qe4 Nf6=) 6...Nc6 7.b5 Ne5 8.Qg3 (8.Qe2 de4 9.Qe4 Ng4=+) 8...Bd7 (better 8...de4!? 9.Rh3 Ng4–/+) 9.d4= Nc4 10.Bc4 dc4 11.Nd2 (11.Na3 Nf6 12.e5 Nd5=) 11...Nf6 (11...Bb5 12.a4 Bc6 13.f3=+) 12.0-0-0 (better 12.a4!?=) 12...Bb5=+ 13.Ngf3 a5 14.Rde1 a4 15.Ba3 Bf8 (15...Nd7 16.e5=+) 16.Bc5 (better 16.Bf8!? Rf8 17.d5=) 16...Bc5–/+ 17.dc5 Qd7 18.Rd1 Qd3 (18...Qe7 19.Nd4 e5 20.Nb5 Qc5 21.Nc4=) 19.Nb1 (19.Qe5 Ke7 20.Qc7 Nd7 21.Nb1 (21.Qb7?? Qc3 22.Kb1 Rab8–+) 21...Qe4 22.Nd4+=) 19...Qe2?? (19...Qe4!? 20.Rhe1 Qg4–/+) 20.Rhe1 (better 20.Nd4!? Qa2 21.Ne6+–) 20...Qa2= 21.Rd2 Qb3?? Black prepares a3 (21...Qa1 22.Ree2 Ne4 23.Re4 a3 24.Re6 Kf8+–) 22.Rb2 (22.Nd4 a3 23.Nb3 cb3 24.Na3 Ra3+–) 22...Ne4? (better 22...a3 23.Rb3 cb3 24.Na3 Ra3+–) 23.Re4+– Qb2 (23...Bc6 24.Rb3 Be4+–) 24.Kb2 a3 (24...Bc6 25.Re6! Kd8 26.Rf6+–) 25.Na3 Bc6 (25...Ba4 26.Re6! Kd8 27.Rf6+–) 26.Rc4 (26.Re6! Kf8 27.Ng5 Bd5+–) 26...0-0 27.Qc7 (27.Ne5 Kh7+–) 27...Bd5 28.Rd4 Rfc8 (28...Rac8 29.Qf4 Rc5 30.Ne5 Bg2 31.Rd7 Re5 32.Qe5+–) 29.Qe5 (29.Qe7 Rf8+–) 29...Rc5 (29...Rf8 30.Qf6 Rac8 31.Ne5+–) 30.c4 Bc4 (30...Bf3 31.Qc5 Bg2 32.Qe7+–) 31.Qc5 Be2 32.Rf4 (32.Ne5 Bb5 33.Nb5 f6 34.Qe7 fe5 35.Rd7 Ra2 36.Ka2 g5 37.Qd8) 32...Kg7 33.Qe5 (33.Qe5 f6 34.Qf6 Kh6 35.Qg5 Kg7 36.Qe7 Kh6 37.Rf7 Bf3 38.Rh7) 1–0. gordiemac – pieeater, ChessWorld.net, 2011.

1...h6

2.a3 a6 3.Bb2 b6 4.e3 Bb7 5.Nf3 d6 6.Nc3 (6.Be2 Nf6+=) 6...e6 (6...e5 7.Be2=) 7.Be2 (7.Bc4 c5=) 7...Nd7 (7...Nf6 8.d3=) 8.d3 Ne7 9.Qd2 g6 10.Ne4 Rg8 (10...e5 11.0-0=) 11.Nf6 Nf6 12.Bf6 Bg7 13.Bg7 Rg7 14.Qc3 (14.e4 g5=) 14...Rh7 (14...e5 15.0-0+=) 15.0-0+= Qb8 (15...Qd7 16.Qb3+=) 16.Qf6 (16.d4 g5+=) 16...Qd8 (16...e5 17.c4=) 17.c4 (17.Qb2 g5+=) 17...Qd7 (17...e5 18.d4 Nc6 19.de5 Ne5 20.Qf4+=) 18.Rac1 (18.Rfd1 e5=) 18...c5 (18...e5 19.Qh4=) 19.d4 (19.Rb1 cb4 20.Rb4 Nc8+=) 19...0-0-0 (19...cb4!? 20.ab4 g5+–) 20.dc5+– dc5 21.Ne5 Qc7 (21...Qe8 22.Bf3 Nf5 23.Bb7 Kb7 24.Rfd1+–) 22.Rfd1 (22.Nf7 Rd2 23.Rcd1 Re2+–) 22...Ng8 (22...Rd1 23.Rd1 Ng8 24.Qf4+–) 23.Qd8 (23.Rd8 Qd8 24.Qd8 Kd8 25.bc5 bc5+–) 23...Qd8 24.Rd8 Kd8 25.bc5 bc5 26.Rd1 (26.Nd3 Nf6 27.Nc5 Kc7+–) 26...Kc8 27.Nd7 Ne7 (27...a5 28.Nc5 Bc6 29.Rb1+–) 28.Nc5 Bc6 29.Na6 Rh8 30.Nb4 (30.f4 Kb7 31.Nb4 Ra8 32.Nc6 Nc6 33.Rd7 Kb6 34.Rf7 Ra3+–) 30...Bb7 (30...Kc7 31.f3+–) 31.c5 Kc7 (31...Rd8 32.Rd8 Kd8 33.f4+–) 32.Bf3 (32.Bb5!? Nd5+–) 32...Bf3 33.gf3 Ra8 34.Rd3 Ra4 (better 34...Nc6 35.f4 Na7+–) 35.e4 (35.f4 Nc6 36.Rb3 Na5+–) 35...Ra5 (35...Nc6 36.Nc2+–) 36.Kf1 Nc8 (36...Nc6 37.Rc3+–) 37.c6 (37.f4 Na7+–) 37...Nb6 (37...Nd6 38.h3+–) 38.Kg2 (better 38.f4+–) 38...Nc4? (better 38...g5+–) 39.Rd7 Kc8 40.Rf7 Ra3 41.c7 (41.Re7!? Ra4 42.Nd3 Ra2+–) 41...Ra7 (better 41...Ne5 42.Rf6 Kc7+–) 42.Rf6 Rc7 (42...Ra4 43.Nd3 Kc7 44.Re6+–) 43.Rg6 (43.Re6 Nd2+–) 43...Na3? (43...Ne5 44.Re6 Rg7 45.Kf1 Nf3 46.Rh6 Nd2 47.Ke2 Ne4 48.Ke3+–) 44.Na6 (44.Re6 Rg7 45.Kf1 Rf7+–) 44...Rc4? (better 44...Rc6 45.Rg8 Kb7+–) 45.Re6 Rc2 (45...h5 46.Re5 Rc6 47.Nc5+–) 46.Rh6 Kd7 (46...Nc4 47.f4+–) 47.Nb4 (better 47.f4+–) 47...Nc4 (47...Re2 48.Nd5+–) 48.Nd5 (better 48.Nc2 Ke7+–) 48...Ne3 (48...Ne5+–) 49.Ne3 Rc1 (49...Rc5 50.Rh7 Ke8 51.f4+–) 50.Rh7 Ke6 51.Rh3 (51.f4 Kf6+–) 51...Ra1 52.Rg3 Ke7 (52...Kf7 53.f4+–) 53.f4 Ke8 (53...Kf8 54.e5+–) 54.f5 (54.h4 Ra4 55.Kf3 Ra1+–) 54...Ra2 (54...Ra5 55.h4+–) 55.e5 Kf7 (55...Ra5 56.e6 Kf8 57.f6+–) 56.e6 Kf8 57.Rf3 (57.Nd5 Re2 58.Re3 Re3 59.fe3 Kg7 60.f6 Kf8 61.Nc7 Kg8 62.e7 Kf7 63.e8Q Kf6 64.Qf8 Kg5 65.Ne6 Kg6 66.Nf4 Kg5 67.h3 Kh4 68.Qf6) 57...Ke7 58.f6 (better 58.Nd5 Kd6+–) 58...Ke6 59.f7 Ra7 60.f8Q Rg7 61.Qg7 Kd6 62.Qd4 (62.Rf6 Ke5 63.Rh6 Ke4 64.Rd6 Kf4 65.Rd4) 62...Ke7 63.Qe5 (63.Qd5 Ke8 64.Qe4 Kd8 65.Rf7 Kc8 66.Qe8) 63...Kd7 64.Rf4 Kd8 (64...Kc6 65.Rb4 Kd7 66.Rb7 Kc6 67.Qd5) 65.Rd4 (65.Qg7 Ke8 66.Rf8) 65...Kc8 66.Qc5 (66.Qe7 Kb8 67.Rd8) 66...Kb7 67.Rb4 Ka6 68.Qc4 (68.Qb6) 68...Ka5 69.Qb5 1–0. TwelveTeen (2435) – Lucuix21 (2420), lichess.org, 2016.

2.a3 f6 3.Bb2 g6 4.e3 e6 5.d4 f5 6.c4 g5?? (6...Nf6 7.Nf3+–) 7.b5 (better 7.Qh5 Ke7 8.d5+–) 7...h5 (7...Nf6 8.Bd3+=) 8.Qc2 (8.Nh3 g4 9.Nf4 Bd6+–) 8...Rh6 9.Nd2 Nf6 10.0-0-0 (10.Bd3!?+=) 10...Be7 (10...a6 11.Nb1=+) 11.Bd3 Kf7 (11...a6!?=) 12.Ne2 d6 (12...a6 13.Qa4+=) 13.g3 (13.d5 ed5 14.Bf5 dc4 15.Nc4 Bd7+–) 13...Qd7 (13...a6 14.Qa4=) 14.f4 (better 14.Nf3 Ne4 15.Be4 fe4 16.Qe4+=) 14...c6?? (better 14...Ng4 15.Rde1 Ne3=) 15.fg5+– e5 (15...Rh8 16.gf6 Bf6 17.d5 Bb2 18.Qb2+–) 16.gh6 (better 16.de5 de5 17.Nf3 Ng4 18.gh6 Bf6+–) 16...Bd8 (16...e4 17.Be4 fe4 18.Ne4 Ke8+–) 17.h7 (better 17.de5 de5 18.Rhf1+–) 17...Na6 (17...Kg7 18.de5 de5 19.Be5 a6+–) 18.h8Q Ke6 19.Rdf1 (19.Bf5 Kf7 20.Bg6 Ke7 21.Qg7 Ke6 22.Bf5) 19...Rb8 20.Bf5 Ke7 21.Bd7 (21.Qg7 Ke8 22.Bg6 Qf7 23.Qf7) 21...Kd7+– 22.Rf6 Kc7 23.c5 dc5 24.dc5 (24.b6 ab6 25.Rf7 Bd7 26.Rd7 Kd7 27.Qf5 Ke7 28.Qhe5) 24...cb5 (24...b6 25.Rf7 Bd7 26.Rd7 Kd7 27.Qf5 Kc7 28.Qg7 Be7 29.Qe7) 25.c6 (25.Be5 Kd7 26.Qd3 Ke7 27.Qhd8) 25...bc6 (25...Bf5 26.cb7 Kd7 27.Qc6 Ke7 28.Qg7) 26.Qc6 1–0. pat_cash87 – SILVERVASQUEZ_1B57, lichess.org, 2020.

2.a3 Rh7 3.Bb2 g5 4.e3 Bg7 5.d4 f6? (5...Rh8!?+=) 6.c4 (6.Bd3 Rh8+–) 6...Kf7 (6...h5 7.Be2 h4 8.Bh5 Kf8 9.Qf3+–) 7.c5 (7.Qh5 Kf8+–) 7...e6 8.Qc2 (better 8.h4+–) 8...Ne7?? (8...f5 9.Bd3+–) 9.Bd3 (9.Qh7 d5+–) 9...d6?? (9...f5 10.Nf3+–) 10.Nd2 (10.Bh7!? f5 11.cd6 cd6+–) 10...Nd7?? (10...f5 11.Ne2+–) 11.0-0-0 (11.Bh7 f5 12.cd6 cd6+–) 11...c6?? (11...f5!?+=) 12.Ne2 (12.Bh7 d5 13.h4 g4+–) 12...Qc7?? (12...f5 13.g4 dc5 14.bc5+–) 13.Rdg1 (13.Bh7 d5 14.h4 g4+–) 13...b6?? (13...Rh8 14.Nc4 dc5 15.bc5+–) 14.g4 (14.cd6 Qd6 15.Bh7 Ba6+–) 14...Bb7?? (14...Rh8 15.cd6 Qd6 16.h4+–) 15.f4 (15.Bh7 dc5 16.bc5 Ba6 17.cb6 ab6+–) 15...a6?? (15...Rhh8 16.cd6 Qd6 17.h4+=) 16.f5 (16.Bh7 bc5 17.bc5 dc5 18.dc5 Nd5+–) 16...Ra7?? (better 16...ef5 17.Ng3 Rhh8 18.Nf5 Nf5 19.Bf5 bc5 20.bc5 dc5 21.dc5 Ke7+–) 17.fe6+– Ke6 18.Bf5 (18.Bh7 d5+–) 18...Kf7 19.h4 (better 19.Bh7 d5+–) 19...h5?? (19...Rh8 20.cd6 Qd6+–) 20.hg5 (20.Bh7 dc5 21.bc5 hg4+–) 20...fg5 (20...Rh8 21.gh5 Bc8+–) 21.Bh7 Bf6 (21...dc5 22.Rf1 Ke8 23.dc5 Bb2 24.Qb2+–) 22.gh5 Ke6 (22...a5 23.Bg6 Kg7 24.Ne4+–) 23.d5 (better 23.cd6 Qd6 24.e4 a5 25.Qb3 Nd5 26.ed5 Ke7 27.ba5 cd5 28.ab6 Nb6+–) 23...cd5 24.cd6 (24.Bf6 Nf6 25.Nd4 Kd7 26.Bf5 Ke8 27.cb6 Qb6+–) 24...Qd6 (24...Kd6 25.Qc7 Kc7 26.Bc2+–) 25.e4 (25.Nd4 Kf7 26.N2f3 Ne5 27.Ng5 Ke8+–) 25...b5 (25...Ne5 26.h6+–) 26.ed5 (better 26.Bf6 Kf6 27.Qc3 Qe5 28.Qe3+–) 26...Kd5 (26...Bd5 27.Ne4 Be4 28.Qe4 Kf7 29.Bg6 Kg8 30.Bf6 Nf6 31.Qe3 Rc7 32.Kb1+–) 27.Be4 (27.Qe4) 27...Ke6+– 28.h6 (better 28.Bf6 Nf6 29.Bb7 Rb7+–) 28...g4 (28...Bb2 29.Kb2 Qe5 30.Nc3+–) 29.h7 Kf7 (29...Be4 30.Ne4 Bb2 31.Qb2 Rc7 32.Kb1 Qd3 33.Ka1+–) 30.h8Q (30.Bf6 Nf6 31.h8Q Qe5 32.Bb7 Rb7 33.Rh7 Nh7 34.Qe5 a5 35.Rf1 Nf6 36.Rf6 Kg7 37.Qg5 Ng6 38.Qcg6 Kh8 39.Rf8) 30...Bh8 31.Rh8 Ke6 32.Rh6 Kf7 33.Rd6 Nf6 34.Rf6 (34.Bg6 Ng6 35.Rf6 Ke8 36.Qg6 Kd8 37.Rf8 Ke7 38.Rf7 Kd8 39.Qg8) 34...Kg7 (34...Ke8 35.Qc7 Bd5 36.Qb8 Nc8 37.Qc8 Ke7 38.Qf8 Kd7 39.Qd6 Kc8 40.Rf8 Kb7 41.Bd5) 35.Rg6 (35.Rg4 Ng6 36.Rgg6 Kh7 37.Rf7) 35...Kf7 36.R1g4 (36.Rg7 Ke8 37.Qc7 Be4 38.Re7 Kf8 39.Qd8) 36...Be4 (36...Bc6 37.Rf4 Ke8 38.Bc6 Rd7 39.Qd3 Nc6 40.Rg8 Ke7 41.Rg7 Ke6 42.Qd7) 37.Rg7 (37.Rf6 Ke8 38.Rg8 Kd7 39.Qc5 Ng8 40.Qd6 Kc8 41.Rf8 Kb7 42.Rb8) 37...Ke6 (37...Ke8 38.Re7! Ke7 39.Qc5 Kd8 40.Rg8 Kd7 41.Rg7 Ke6 42.Nf4) 38.Qe4 Kd7 (38...Kd6 39.R4g6! Ng6 40.Qg6 Kd5 41.Nf4) 39.Re7 Kd6 40.Ra7 (40.Qe6) 40...a5 41.Ra5 (41.Rg6) 41...Kc7 (41...Kd7 42.Rg7 Kd6 43.Ra6) 42.Rb5 (42.Rg7 Kd6 43.Ra6) 42...Kd6 (42...Kd8 43.Rg7 Kc8 44.Qe8) 43.Be5 (43.Be5 Kd7 44.Rg7 Ke6 45.Nd4; 43.Qe8 Kc7 44.Be5) 1–0. pat_cash87 – AnLuMG, lichess.org, 2020.

2.Ba3 Nc6 3.e4 a5 (3...e5!?=) 4.b5+= Ne5 5.d4 Ng6 6.Bc1 b6 (6...e5 7.Nf3 Nf6 8.Bd3+=) 7.Bd3 e5 8.Nf3 ed4 9.Nd4 Ne5 10.0-0 Nd3 11.Qd3 Nf6 12.e5 Nd5 (12...Nh7 13.Nf5+/–) 13.a3 (13.Qf3 c6 14.bc6+–) 13...Bc5? (13...Bb7 14.c4 Ne7 15.Rd1+=) 14.Nf3 (better is 14.Nf5 Ne7 15.Ng7 Kf8 16.Nh5+–) 14...Ne7 15.Qe4 Ra7 16.a4 (16.Qe2 Ng6+=) 16...Bb7= 17.c4?? (better is 17.Qg4=) 17...Be4–+ 18.Nfd2 (18.Nbd2 Bd3 19.Re1 Nf5–+) 18...Bb1 (better is 18...Bd3 19.Rd1 Nf5 20.Nb3 Bf2 21.Kf2–+) 19.Rb1 0-0 0–1. sgrant (2045) – mduerr (1700), net–chess.com, 2010.

2.Ba3 d6 3.e3 (3.e4 Nf6=) 3...e5=+ 4.Nc3 Ne7 (4...a5 5.Bb5 c6 6.Bc4=) 5.Ne4 (5.Nf3 Be6=) 5...b6 (5...Nd7 6.Nf3=+) 6.b5 (6.Nf3 d5 7.Nc3 Nd7=) 6...Bb7 (6...a6 7.Nf3=) 7.Ng3 (7.Nc3 a6=) 7...g6 (7...a6 8.Nf3=) 8.e4 (8.d4 Bg7=) 8...Bg7 (8...a6 9.Bb2=) 9.Bc4 (9.Qg4 Nd7=) 9...0-0 10.Bc1 (10.Qf3 a6=) 10...a6–/+ 11.Nf3 (11.ba6 Na6 12.Ba3 c5=+) 11...ab5 (11...d5 12.ed5 ab5 13.d6 bc4 14.de7 Qe7 15.Bb2–+) 12.Bb5=+ Na6 (12...f5 13.Qe2=+) 13.d3 (13.0-0 f5 14.Re1 Nc5=+) 13...Nc5 (13...c6 14.Bc4 d5=+) 14.h4 (14.Be3 f5 15.Bc5 dc5 16.Bc4 Kh7 17.ef5 Nf5–/+) 14...Kh7 (14...d5!? 15.Qe2 c6–+) 15.h5 (15.Be3 f5=+) 15...d5 (15...g5 16.0-0=+) 16.hg6–/+ fg6 17.Rh6?? (17.ed5 Bd5 18.Bg5=) 17...Bh6–+ 18.Bh6 Kh6 19.Qd2 Kg7 20.Qg5 Ng8 21.Nh5 Kf7 22.Ne5 Ke6 23.Ng7 Kd6 24.Qg6 Qf6 25.Nf5?? Ke6 26.Ng7?? Ke5–+ 27.Qh5 Kd6 28.Nf5 Ke6 29.Nd4 Qd4 30.Qf5 Rf5 (31.ef5 Kf5–+) 0–1. manofsteel3 – GrandPawn, Live Game Caissa's Web, 2005.

2.Ba3 e5 3.e4 a5 4.b5 Ba3 5.Na3 Nf6 6.Bd3 (6.Qf3 0-0+=) 6...d5 7.Nf3? (better is 7.ed5 Qd5 8.f3+=) 7...de4–+ 8.Be4 Ne4 9.Qe2 Ng5 (9...Bf5 10.0-0 Qe7 11.Nc4–+) 10.Qe5 Qe7 11.Qe7 Ke7 12.Nd4 (12.Ng5 hg5 13.d4 Be6–+) 12...Rd8 13.c3 c5 14.Nb3 Nd7 15.0-0 b6 16.Rae1 Ne6 17.Re3 Bb7 18.Nc4 Bd5 19.Ne5 Ne5 20.Re5 Bb3 21.ab3 Rd2 22.f4 Kf6 23.g3 Rad8 24.g4 R8d3 25.g5 hg5 26.b4 Nf4 27.Re8 Rh3 28.Rf2 Rf2 29.Kf2 Rc3 0–1. sgrant (2045) – smurfchess (2135), net–chess.com, 2010.

2.Ba3 Nf6 3.Nf3=.

2.a4 c5 3.Ra2?? (better is 3.bc5 Nf6 4.Nc3+=) 3...Qa5?? (3...cb4 4.Bb2–/+) 4.Ra1 (4.ba5 Nc6+–) 4...Nc6?? (4...cb4 5.Nf3–/+) 5.c3 (better is 5.ba5 e6 6.Nc3+–) 5...Qb6 (5...cb4 6.cb4 Nb4 7.Nf3–/+) 6.Ra2? (6.a5 Qc7 7.bc5 Nf6=) 6...Nb8 (better is 6...cb4!? 7.cb4 Nb4–+) 7.Bb2 Qa5?? (better is 7...cb4 8.cb4 Nc6+=) 8.b5 ½–½. Sokolov,Ivan – Khalifman,Alexander, Parnu, 1996.

2.a4 g6 3.a5 Rh7 4.a6 (4.Nf3 d5=) 4...Rg7 (4...Na6 5.b5 Bg7 6.d4+=) 5.b5 (5.e4 e5=) 5...Nf6 (better is 5...ba6!? 6.Bb2 ab5 7.Bg7 Bg7+=) 6.b6 (better is 6.e4=) 6…Nh7 ½–½. Sislian,Hanno – Meyer,Thorsten, Schleswig Holstein–chD, 1989.

2.Bb2 b5 3.a4 c6 (3...ba4 4.Nf3+=) 4.Nf3 ba4 5.Ra4 Nf6 6.e3 a6 7.Nc3 e6 8.Qa1 Bd6 (8...d5 9.Ne5+=) 9.e4+/– e5 10.Be2 Qe7 (10...Bc7 11.d4 d5 12.Ne5 Ne4 13.Ne4 de4 14.0-0+/–) 11.b5! cb5 (11...ab5 12.Ra8 Pinning (12.Ra8 Deflection); 11...cb5 12.Nb5) 12.Nb5!+– Bb7 13.Nd6 Qd6 14.Be5 Qc6? 15.Bb8 Rb8 16.Qe5 Kd8 17.Qb8 Bc8 18.Qb3 Ne4 19.Ne5 Nd6 20.Nc6 dc6 21.Qb8 Nb5 22.Bb5 ab5 23.Rd4 Ke7 24.Qd6 Ke8 25.Qd8# 1–0. pierred – valerypavlovic, internet, 2010.

2.Bb2 e5 (--> 1.b4 e5 2.Bb2 h6).

2.Bb2 e6 (--> 1.b4 e6 2.Bb2 h6).

2.Bb2 f5? 3.e3 (better is 3.e4 e6 4.Qh5 Ke7 5.ef5+/–) 3...b6?? (3...e6 4.Qh5 Ke7 5.Nf3+=) 4.Nf3 (4.Qh5 g6 5.Qg6) 4...Bb7 (4...e6 5.Ne5 Nf6 6.Be2+/–) 5.Be2 (5.Nh4!? Bd5 6.Ng6 Rh7+–) 5...Nf6+/– 6.c4 (6.Ne5 h5+/–) 6...d6 (6...e6 7.Ne5 Rg8 8.Bh5 g6 9.Bg6 Ke7 10.e4=) 7.d4 Nbd7 (7...e6 8.Nc3+=) 8.Nbd2 (8.d5!?+/–) 8...e6+= 9.0-0 Be7 10.a3 0-0 11.Rc1 Ne4 12.Ne4 fe4 13.Nd2 Bg5 14.c5 dc5 15.dc5 bc5 16.bc5 Nf6 17.Qb3?? Bd5?? 18.Bc4 Rb8 19.Qc3 Qe7= 20.Ba6 Nd7–/+ 21.c6? Bf6–+ 22.Qc2?? Ne5 23.Be5 Be5 24.Bb7 Qd6 25.g3 Qa3 26.Nc4 Bc4 27.Qc4 Qe7 28.Qa6 h5 29.Qa7 h4 30.Qc5 Qf6 31.f4?? Bd6?? 32.Qc3 Qg6 33.Qe1 e5= 34.Rc4 ef4–/+ 35.ef4 Rbe8 36.Qe3+= Qe6 37.Ba6 hg3 38.hg3 Qf5 39.Kg2 Kf7 40.Re1 Rh8 41.Rh1?? Rh1–/+ 42.Kh1 Rh8 43.Kg1 Qh3 44.Re4?? Qh1 45.Kf2 Rh2 1–0. Fournier,Frederic (1995) – kalex1v (1860), Chess21, 2002.

2.Bb2 g5?? 3.Bh8 f6 4.c4 e5 5.Qc2 Qe7 6.Qg6 (6.Nc3 Qf7 7.a3 d6+–) 6...Qf7 7.Qf7 Kf7 8.Bf6! Nf6 (8...Kf6 9.b5 Combination; 8...Nf6 9.a3 Combination) 9.e3 (better 9.a3!?+–) 9...Bb4+– 10.Bd3 e4 11.Bc2 a5 (11...d6 12.a3 Ba5 13.Ne2+–) 12.a3+– Bd6 13.Nc3 c6? (better 13...Be5+–) 14.Ne4 Ne4 (14...Bc7 15.d4+–) 15.Be4 Be5 (15...Be7+–) 16.Nf3 (better 16.d4 Bc7 17.Ne2+–) 16...Ba1–+ 17.0-0 Bg7 18.Rc1? (18.d4 d6–+) 18...Na6 (better 18...Bb2!? 19.Rb1 Ba3 20.d4–+) 19.h4 (19.d4 d6–+) 19...g4 20.Nh2 Nc5 (better 20...Bb2 21.Rc2 Ba3 22.Ng4 Bf8–+) 21.Bd3?? (21.Bc2 Bb2 22.Rb1 Ba3 23.d4–+) 21...h5 (better 21...Nd3 22.Rb1 d6–+) 22.Bc2 (22.Be2 Bb2 23.Rb1 Ba3–+) 22...a4 (better 22...Bb2!? 23.Rb1 Ba3 24.d4–+) 23.f3 (23.Rb1 Bf6–+) 23...d5 (23...Nb3 24.Rd1–+) 24.fg4 hg4 25.Rf1 Kg8 26.Bg6 (26.cd5 cd5 27.Rf4 Nb3 28.Ng4 Nd2–+) 26...dc4 27.Rf4 (27.Bf7 Kh8 28.Bc4 g3–+) 27...b5 28.Rd4 (28.Be8 Ra6 29.Bf7 Kh8–+) 28...Be6 (better 28...Bd4!? 29.ed4 Nb3 30.Kf2–+) 29.Rd6 Bf7 (better 29...Bb2 30.Rc6 Ba3 31.d4–+) 30.Ng4 Bg6 31.Rg6 Ne4 (better 31...b4 32.Nf6 Kf7 33.Rg7 Kg7 34.ab4 Kf6 35.bc5 a3–+) 32.Nf6 (32.h5 Kh8 33.Rc6–+) 32...Nf6 33.h5 (33.Rg5 b4! 34.Rg3 Ne4–+) 33...Kf7 34.h6 (34.Rg3 Bf8 35.e4 Ne4–+) 34...Bh8 (34...Kg6!? 35.hg7 b4 36.ab4–+) 35.Rf6 (35.Rg3–+) 35...Kf6 36.g4 Kg6 37.g5 Kg5 38.e4 Kh6 39.Kf2 Kg6 (39...b4 40.ab4 a3 41.Ke3 a2 42.d3 a1Q 43.e5 Qe1 44.Kf3 Rf8 45.Kg4 Be5 46.dc4 Qg3) 40.Ke3 Be5 41.d4 Rd8 42.de5 Re8 (42...c3 43.Kf2 c2 44.Kg3 Rd3 45.Kf2 c1Q 46.Ke2 Qc2 47.Ke1 Rd1) 43.e6 (43.e6 b4 44.Kd2–+). Agiant – bubilik (1615), lichess.org, 2019.

2.b5 b6 3.a4 (3.e4 Bb7=) 3...Bb7 (3...a6 4.Bb2=) 4.c4 (4.Nf3 a6 5.Bb2 e6=) 4...e6 5.Qc2 (5.Nf3 a6=) 5...a6 6.e4 ab5 (6...Bb4 7.Qb3 Bc5 8.Nc3=+) 7.cb5 c6 (7...Nf6 8.Nc3=+) 8.Bb2 (8.Nf3 Bb4=) 8...cb5 (8...Nf6 9.Nc3=) 9.ab5 (9.Bb5 Qg5 10.g3 Qg6=) 9...Ra1 10.Ba1 Nf6 (10...d5 11.Nc3=) 11.Bd3 (11.Bf6 Qf6 12.Qc7+–) 11...g6?? (11...Bc5 12.Nf3=+) 12.h3?? (better is 12.Bf6!? Qf6 13.Qc7 Nc6 14.Qb7 Ne5 15.Qb8 Ke7+–) 12...d5? (12...Bc5 13.Qc3 Be7 14.Nf3=) 13.e5?? Nfd7 14.Nf3 Nc5 15.h4 Nd3 16.Qd3= h5 17.Bc3 Bg7 18.Bd4 Nd7 19.Ng5 Nc5 20.Bc5 bc5=+ 21.Qf3 Qe7 22.Rh3? Be5–+ 23.Nc3? d4 24.Nce4? f6 25.Qa3 fg5 26.Ng5 Bg2 27.Rb3 Qb7 (28.Qc5 Bd5–+; better is 27...0-0 28.d3–+) 0–1. riverborne – ConMan, Live Game Caissa's Web, 2005.

2.b5 Nf6 3.Nf3=.

2.Nc3 e6 3.a3 Nf6 4.e4 d5 5.e5 d4 6.Na4 Nfd7 7.f4 a6 8.Nf3 Nc6 9.Nb2 (9.c4!?= g5) 9...g5 (9...Nb6+=) 10.g3 gf4 11.gf4 Rg8 12.c3 Nb6 13.c4 Bd7 14.Be2 Rg4 15.d3 Rg7 16.Qb3 Ne7 17.Nd4 Bc6 18.Nc6 Nc6 19.Qc3 Nd4 20.Be3 Qh4 21.Bf2 Ne2 22.Ke2 (22.Bh4? Nc3 23.Kd2 Rg4–+) 22...Qf4 23.Qd4 Qg5 24.Qe4 a5 25.Rag1 Qh5 26.Kd2 ab4 27.ab4 Rg1 28.Rg1 Nd7 29.Qb7 Ra2–/+ 30.Qc8 Ke7 31.Bg3 Rb2 32.Kc3 Re2 33.Qc7 Bg7 34.Qd6 Ke8 35.Kb3 Rd2 36.Bf4 Bf8 37.Qd4 Bc5 38.Qc3 Bg1 39.Qd2 Ne5 40.Be5 Qe5 41.Qh6 Be3 42.Qh4 Bd2 43.c5 Qc3 44.Ka4 Qd3 45.Qh8 Ke7 46.Qe5 f6 47.Qc7 Qd7 48.Qd7 Kd7 49.b5 f5 50.Kb3 Bg5 51.Kc3 f4 52.c6 Kc7 (52...Kc7 53.Kd2 f3 54.Kd1 Bh4–+) 0–1. Al_Deeb – marekt, ChessWorld.net, 2011.

2.c4 e6 3.a3 Qf6 4.Nc3 a6 5.Bb2 Ne7? (5...Qg6 6.Nf3+=) 6.Rb1?? (6.Nb5 Qb2 7.Nc7 Kd8 8.Na8 g6+–) 6...b6?? (better is 6...e5+=) 7.Nd5+– Qh4 8.Nc7 Kd8 9.Na8 b5 10.cb5 ab5 11.Nb6 Nbc6 12.Nc8 Nc8 13.Nf3 Qf4 14.e3 Qc7 15.Bb5 N8a7 16.Ba4 Be7 17.Rc1 f6 18.Nd4 Bd6 19.Nb5 Nb5 20.Bb5 Ke7 21.Qa4 Qb7 22.Bc6 dc6 23.Qc6 Qc6 24.Rc6 Rd8 25.0-0 h5 26.d4 Kd7 27.Rfc1 g5 28.b5 h4 29.Rd1 Rb8 30.a4 Ra8 31.Ra6 (31.Ra6 Rb8 32.Rc1+–) 1–0. grahamtrue (2125) – kecker (2125), net–chess.com, 2011. (=1.c4 h6 2.b4)

2.d4 e5 3.a3 ed4 4.Nf3=.

2.d4 e6 3.Bd2 (3.a3 Nf6=) 3...Nc6 4.c3 Nf6 (4...d5 5.Bf4=) 5.f3 (5.Bf4!?=) 5...d5+= 6.Qa4 (6.Qc2 Bd6+=) 6...Bd7 (6...Bd6 7.b5 Nb8 8.e3+=) 7.b5 Ne7 8.c4 (8.e3!?+=) 8...a6–/+ 9.Qb3 (better is 9.Qc2!? ab5 10.cd5 ed5 11.e4–/+) 9...dc4–+ 10.Qc4 Bb5 11.Qc2 Qd4 12.Bc3 Qa7 (12...Ba4 13.Qc1 Qc5 14.Qf4–+) 13.Bf6 (13.a4 Bc6–+) 13...gf6 14.Nc3 Nf5 15.Nb5 ab5 16.e4 Bb4 17.Kd1 0-0-0 18.Kc1 Ba3 19.Kb1 Qa5 20.Be2 Qe1 (20...Qe1 21.Qd1 Rd1 22.Bd1 Qd1#) 0–1. nnstudios – marekt, internet, 2010.

2.d4 Nf6 3.c3 c5 (better 3...d5!?=) 4.bc5 Nc6 5.d5 Ne5 6.Bf4 (6.e4 Qc7 7.Qd4+–) 6...Nc4? (6...Ng6 7.Be3+=) 7.Bc1 d6?? (7...Ne5 8.f4 Ng6 9.f5+–) 8.Qb3?? (better 8.Qa4 Bd7 9.Qc4 dc5 10.e4+–) 8...Ne5 (8...Na5 9.Qc2=) 9.f4 (9.cd6 Qa5+–) 9...Ng6 (9...Ned7 10.cd6 ed6 11.Nf3=) 10.cd6 (10.e4 dc5 11.Nf3 Qc7+–) 10...Qd6 11.e3 (better 11.e4 Nf4 12.Nf3=) 11...Nh5?? (better 11...Qd5!? 12.Qd5 Nd5=) 12.g3 (12.Ba3 Qf6 13.Nf3 a6+–) 12...e5 13.Ba3 Qd7?? (better 13...Qc7+–) 14.Bb5+– Qb5 (14...b6 15.Bf8 Rf8 16.Bd7 Bd7 17.Nf3+–) 15.Qb5 Bd7 (15...Kd8 16.d6 Nf6 17.Bb4+–) 16.Qb7 Rd8 (16...Rc8 17.Bf8 Rf8 18.Nf3 ef4 19.ef4+–) 17.Bf8 Rf8 18.Qa7 ef4 19.gf4 (19.ef4 Rc8 20.Qe3 Kd8 21.Qb6 Ke8+–) 19...f5 (19...Nf6 20.c4+–) 20.Nd2 Rf7 21.Nc4 (21.Ne2 Nf6 22.Qd4 Re7+–) 21...Rf6 (21...Bb5 22.Nd6! Rd6 23.Qb8 Ke7 24.Qb5+–) 22.Na5 Rd6 1–0. patrick317 – warrior23, gameknot.com, 2018.

2.e4 d6 3.d4 g6 4.Bc4 Bg7 5.Nf3 a6 6.Nc3 b5 7.Bb3 Nc6 8.Bd5 Bb7 9.a4 ba4 10.Ra4 Rb8 11.Bc6 Bc6 12.Ra6 Qd7 13.Ba3 e6 14.0-0 Ne7 15.Ra7 0-0 16.g3 Kh7 17.Qe2 Nc8 18.Ra6 Bb7 19.Ra5 Nb6 20.Bc1 Ra8 21.Bf4 Ra5 22.ba5 Na4 23.Na4 Qa4 24.Rb1 Bc6 25.c4 Qa5 26.d5 ed5 27.cd5 Bd7 28.Bd2 Qa8 29.Rc1 Qd8 30.Ba5 Bg4 31.Qe3 Qf6 32.Nd2 h5 33.Bc3 Qe7 34.Bg7 Kg7 35.Qc3 Kh7 36.Qc7 Qc7 37.Rc7 Kg7 38.f3 Bh3 39.Nc4 Ra8 40.Nd6 Ra1 41.Kf2 1–0. marus1 – BabyFace, internet, 2001.

2.f3 d5+= 3.g4? (3.Bb2 Nd7+=) 3...g5 (better is 3...e5!? 4.Nh3 Bb4–+) 4.h4 gh4 5.b5 f6 6.Bh3 (6.d4 h5 7.Rh4 Qd6+=) 6...f5 (better is 6...h5–/+) 7.Bf1?? (better is 7.Bb2 Nf6 8.gf5=) 7…Qd7 ½–½. Hermans,Marcel M (1900) – Cross,Andrew (1605), IECC, 2000.

2.Nf3 a5 3.b5 Nf6 4.Bb2 d5 5.e3 e6 6.c4 Nbd7 7.Nc3 b6 (7...Nb6 8.cd5 ed5 9.Be2=) 8.cd5+= ed5 9.Be2 Bd6 10.Qc2 0-0 11.Rc1 Nc5 12.Nd4 Re8 13.Bf3 Bb7 14.0-0 g6 15.d3 Rc8 16.Nc6 Bc6 17.bc6 Be7 (17...Na6 18.a3+/– (worse is 18.Nd5 Nd5 19.Bd5 Nb4 20.Bf7 Kf7 21.Qc4 Kf8+=; worse is 18.Bd5 Nb4 19.Bf7 Kf7 20.Qb3 Kg7–/+)) 18.Nb5 (18.d4 Na6+/–) 18...Ne6 19.Rfd1 Ng5 20.Be2 Nfh7 21.e4 Bf6 22.Bg4 Ne6 23.Re1 Bb2 24.Qb2 de4 25.de4 Qg5 26.Be6 Re6 27.Rcd1 Nf6 (27...Rc6?? 28.Na7+–) 28.e5 (28.f3 Qc5 (28...Rc6? 29.Na7 Qc5 30.Kh1+–) 29.Kh1 Qg5+= (worse is 29...Qc6 30.Na7 Qe8 31.Nc8 Qc8 32.Re3+/–)) 28...Ng4= 29.Nd4 (29.Rd5!?=) 29...Re5+= 30.Nf3 Re1 31.Re1 Qf4 32.h3 Nf6 33.Qb3 Re8 34.Rd1 Qe4 35.Qc3 Nd5 36.Qd2+= Nf6 37.Qc3 Re6 38.Qa3 Qc6 39.Rd8 Re8 40.Ne5 Qe6 41.Re8 Ne8 42.f4 Nd6 43.Qc3 c5 44.Ng4 Nb5 45.Qf3? Nd4 46.Qa8 Kg7 47.Qb8 h5 48.Nh6 Qf6 49.g4 Qf4! 50.Qg8 Kh6 51.Qh8 Kg5 52.Qd8 f6 (52...f6 53.Qe8 Qg3 54.Kf1 Qh3 55.Ke1 Qc3 56.Kf2 Qd2 57.Kf1 Qf4 58.Ke1 hg4–+) 0–1. Verhoeven,Tom – Bernink,Henk, NED–chT, 1995. (=1.Nf3 h6 2.b4 a5)

2.Nf3 a6 3.e4 d6 4.d4 Bg4 5.h3 Bh5 6.Bd3 Nf6 (6...e5 7.d5+=) 7.0-0 e5 8.d5 c6 9.Nc3 cd5 10.ed5 Be7 11.Re1 0-0 12.Bd2 b5 (12...Nfd7!?+=) 13.a4 Nbd7 14.ab5 ab5 15.Ra8 Qa8 16.Bb5 Nb6 17.Bc6 Qa3 18.Qa1 Qb4? 19.Rb1+– Qc5 20.Be3 Qc4 21.Nd2 Qh4 22.Rb6 Bg6 23.Rb7 Nh5 24.Qa4 1–0. market (2175) – Not_today, GameColony.com, 2002.

2.Nf3 b6 3.Bb2 Bb7 4.e3 e6 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 e6 4.Nf3 h6).

2.Nf3 e6 3.a3 Nf6 4.Bb2 Be7 5.e3 0-0 6.c4 (6.Be2 d6=) 6...c5 (6...a5 7.b5=) 7.b5 (7.bc5 Bc5 8.d4 Be7+=) 7...a6 8.a4 (8.d4 cd4 9.Bd4 d6=) 8...ab5 (8...d5 9.Be2=) 9.ab5 Ra1 10.Ba1 d5 11.Qc2 (11.d4 Nbd7=) 11...b6 (11...Nbd7 12.d4=) 12.d3 Bb7 (12...Bd6 13.Be2=) 13.Be2 Nh7 (13...dc4 14.dc4 Be4 15.Qb3=) 14.0-0+= Ng5 (14...Bf6 15.Nbd2+=) 15.Nbd2 (15.Ng5 Bg5 16.Nd2 Bf6+=) 15...Bf6 (15...Nf3 16.Bf3 Bd6 17.cd5 ed5 18.Bc3=) 16.Ng5 Bg5 17.f4 (17.Bf3 Nd7+=) 17...Bf6 18.Bb2 (18.Bf3 Nd7+=) 18...Bb2 19.Qb2 f6 (19...dc4 20.Nc4 Nd7 21.Qc3=) 20.Bf3 (20.Ra1 dc4 21.Nc4 Bd5+=) 20...Qc7 (20...Rf7 21.Qc3+=) 21.Ra1+– Nd7 (21...Rd8 22.Ra7+–) 22.Ra7 Ra8 (22...Qb8!? 23.Qa2 Kh7+–) 23.Ra8+– Ba8 24.Qa2 Qb8? (better 24...Qb7+–) 25.cd5 Nf8 (25...Kh7 26.de6 Bf3 27.Nf3 Qg8+–) 26.de6 Bf3 (26...Ne6 27.Ba8 Kh8 28.Qe6 Qa8 29.Qb6 Qa3+–) 27.e7 Kh8 (27...c4 28.Qc4 Kh7+–) 28.Qf7 Qd6 29.ef8Q Qf8 30.Qf8 Kh7 31.Nf3 Kg6 (31...h5 32.Nh4 c4 33.Nf5 Kg6 34.Ne7 Kh7 35.Qg8 Kh6 36.Qh8) 32.Nh4 Kh5 33.g3 (33.Qg7 c4 34.Nf5 cd3 35.g4) 33...g5 (33...g6 34.Qe8 Kg4 35.Qg6 Kh3 36.Qf5) 34.Qf6 (34.h3 gf4 35.Qe8 Kg5 36.ef4) 34...gh4 (34...Kg4 35.Qe6 Kh5 36.Nf3 gf4 37.g4) 35.Qf5 1–0. jaddwarrior (1950) – tsingorin (1960), ChessWorld.net, 2013. (=1.Nf3 h6 2.b4 e6)

2.Nf3 g5 3.Bb2 Nf6 4.e3 Bg7 5.c4 (5.Be2 d6=) 5...a6 (5...g4 6.Nd4=) 6.Nc3 d6 7.d4 Nbd7 (7...g4 8.Nd2+=) 8.h3 (8.Bd3 a5 9.b5 0-0+=) 8...e6 (8...e5 9.de5 de5 10.Bd3+=) 9.Be2 (9.Bd3 c5+=) 9...Nb6 (9...Qe7 10.Qa4+=) 10.0-0 (10.e4 a5 11.b5 a4+–) 10...Bd7 (10...g4 11.hg4 Ng4 12.Bd3+=) 11.e4 (11.Nd2 Qe7+=) 11...Nh5 (11...g4 12.hg4 Ng4 13.Re1+=) 12.g3 (12.c5 Nc8+–) 12...Nf6 (12...e5 13.Kg2 g4 14.hg4 Bg4 15.de5 de5 16.Qd8 Rd8 17.c5+–) 13.e5+– de5 (13...Nh7 14.c5 Nd5 15.cd6 Nc3 16.Bc3 cd6 17.Rc1+=) 14.de5 Ng8 (14...Nh7 15.Qb3+–) 15.Qc2 (15.Qb3 Bc6+–) 15...Ne7 (15...Qe7 16.Qb3+=) 16.a4 c6 (better 16...Nc6!? 17.a5 Nc8+= (17...Nb4? 18.Qb3+–)) 17.Ne4+– Nf5 (17...0-0 18.a5 Nbc8 19.Rfd1+–) 18.g4 Nh4 (18...Ne7 19.Rad1 Ng6 20.Nd6 Ke7 21.Bd4+–) 19.Nh4 gh4 20.a5 (20.Nd6 Kf8 21.a5 Nc8 22.Nb7 Qe7+–) 20...Nc8 21.Rfd1 b5 (21...b6 22.ab6 Nb6 23.Nd6 Kf8 24.Ra3+–) 22.Ra3 Ne7 (22...bc4 23.Bc4 h5 24.Rad3 hg4 25.Ba6+– (worse 25.Rd7 Qd7 26.Rd7 Kd7+–)) 23.Rf3 (better 23.Rad3 Ra7 24.Nd6 Kf8 25.Rf3+–) 23...Ng6 (23...0-0 24.Nf6 Bf6 25.ef6 Re8+–) 24.Nd6 Kf8 25.Qg6 Be8 (25...Qf6 26.ef6 fg6 27.fg7 Kg8 28.gh8Q) 26.Rf7 Bf7 27.Qf7 1–0. michaelbuss (2810) – Gabbydog, ChessWorld.net, 2013.

2.h4 Nf6 3.Nc3 (3.Nf3 d5+=) 3...e5–/+ 4.e4 (4.a3!?–/+) 4...Bb4–+ 5.a3 (5.Nge2 Nc6–+) 5...Bc3 6.dc3 Nc6 7.Nf3 (7.Bb5–+) 7...Ne4 8.Qd3 Nc5 9.Qc4 d6 10.Be3 Be6 11.Qb5 a6 12.Qb2 b6 13.c4 0-0 14.Be2 Na4 15.Qb3 b5! 16.0-0 Na5 17.Qb4 c5 18.Qd2 e4 19.Nh2 Bc4 20.g3 f5 21.Bf4 Be2 22.Qe2 d5 23.f3 Nc4 24.fe4 de4 25.Rfd1 Nc3 26.Rd8 Ne2 27.Kf2 Rad8 28.Nf1 Nc3 29.Ne3 Rd2 30.Kf1 Ne3 31.Ke1 Re2# 0–1. valerypavlovich (2115) – acidtest, net–chess.com, 2010.

2.a3 Nf6

3.c4 d5 4.cd5 Nd5 (4...e6 5.e3=) 5.e3 Consolidates f4 5...f5?? throwing away the advantage (5...Bf5!?= is worth consideration) 6.d4?? ignoring the path to victory (better is 6.Qh5 seems even better 6...Kd7 7.Nf3+–) 6...g5? (6...g6 7.Bc4+=) 7.Nf3 (7.Qh5 Kd7 8.Qf7 Kd6+–) 7...f4? Black gains space (better is 7...g4 and Black has air to breath 8.Ne5 Nd7+=) 8.Ne5+– c6?? sad, but how else could Black save the game? (better is 8...g4 9.e4 Nb6 10.Bf4 Bg7 11.Bb5 c6+–) 9.Ng6 White threatens to win material: Ng6xh8 (9.Qh5) 9...Rg8+– 10.Nf8 (10.Ne5 Qc7 11.Bd3 Kd8+/–) 10...fe3 (10...Rf8 11.Qh5 Kd7 12.ef4+=) 11.Nh7 (11.Qh5 Kf8 12.Qh6 Rg7 13.fe3 Qd6 14.Qd6 ed6+/–) 11...Rh8? (better is 11...ef2 12.Kf2 Rg7+/–) 12.Bd3 ½–½. Reiss,Stephanie – Reiss,Konstanze, GER–ch op (Women), 2000.

3.e3 e5=.

3.Nf3 d5=.

3.h3 e5+= 4.e4 (4.Bb2 d6+=) 4...Ne4 5.Bc4 (5.Qe2!? d5 6.d3+=) 5...d5–/+ 6.Ba2 (6.Bb3 c6–/+) 6...a5 7.b5?? (better is 7.Qe2–/+) 7...Bc5–+ 8.Qf3 Bf2 (8...Nf2?! 9.Rh2 Ne4 10.Ne2–+) 9.Kf1 Bh4 10.Ne2 Ng5 11.Qe3 Qf6 12.Nf4 d4 13.Qe2 d3 14.Qe3 0-0 15.Qd3 Qf4 16.Ke2 Bg4! 17.hg4 Qg4 18.Qf3 Nf3 19.Kf1 Nd2! 20.Nd2 Qd1# 0–1. nwalker08 – marekt, internet, 2010.

2.a3 g5

3.Bb2 f6 4.d3 (4.e4 h5+/–) 4...e6 5.Nd2 Bg7 6.g3 (6.e4 Qe7+/–) 6...Ne7 7.Bg2 Nbc6 8.Ngf3 d6 9.0-0 Bd7 10.e4 Ng6 11.c4 Qe7 12.d4 Qf7 13.e5 (13.b5 Nce7+=) 13...0-0-0?? (better is 13...fe5 14.b5 Nd4 15.Nd4 ed4 16.Bb7 Rb8+=) 14.ed6 cd6 15.Qb3 (15.Ne4 Bf8+/–) 15...h5 (15...g4!? 16.Ne1 f5=) 16.d5 Nce5 17.de6 Be6 18.Rac1 Kb8 19.Qe3 h4 20.Ne5 Ne5 21.Qe4 hg3 22.fg3 d5?? 23.Qe3?? Nc4 24.Nc4 dc4 25.Bd4 a6 26.Bb6 Rd3+= 27.Qf2 Qh5 28.Ba7 Ka8 29.Bb7? Kb7–+ 30.Qb6 Kc8?? 31.Qc6?? Attacking the isolated pawn on c4 31...Kd8–+ 32.Bb6 Ke7 33.Rf2 Rd1 34.Rd1 Qd1 35.Rf1 Qd7 36.Bc5 Kf7 37.Qa6 f5 38.Qd6 Qd6 39.Bd6 Bd4 40.Rf2 Bf2 41.Kf2 Rh2 42.Kf3 c3 43.Bc5 c2 44.Be3 Bd5# 0–1. golfx – 100problemas, kurnik, 2012. (=1.a3 h6 2.b4)

3.Bb2 Nf6 4.e4=.

3.Bb2 Nf6 4.Bf6 ef6 5.Nc3 Bg7 6.e4 0-0 7.Bc4 d6 8.Nge2 f5 9.ef5 Bf5 10.0-0 c6 11.Ng3 Bg6 12.f4 d5 13.Be2 d4 14.Na4 (14.f5 dc3 15.fg6 Qd4 16.Kh1 fg6 17.dc3 Rf1 18.Qf1 Qc3 19.Rd1=) 14...d3–+ 15.cd3 Ba1 (better is 15...Qd4!? 16.Kh1 Qa1 17.Qa1 Ba1 18.Ra1 gf4–+) 16.Qa1–/+ gf4 (16...Bd3 17.Nh5 f6 18.Bd3 Qd3 19.Nf6 Kf7 20.Nc5+–) 17.Ne4 Be4 18.de4 Qd2 19.Bh5 Nd7 20.Nc3 Nf6 21.Bf3 Rad8 22.Kh1 Kg7 (22...Qd4 23.Qe1–+) 23.Ne2 Qd3 24.Nf4 Qd4 25.Qe1 Qe5 26.Ne2 Qg5 27.Ng3 Rde8 28.Qa1 Kg6 29.Nf5 Nd7?? 30.h4 Qf6–/+ 31.Qc1 Ne5?? 32.Qh6# 1–0. studentemeryt (1695) – biged, kurnik, 2012. (=1.a3 h6 2.b4)

2.Bb2 a5

3.b5 d5 4.e3 c6 (4...Bf5 5.Nf3=) 5.c4 cb5 6.cb5 Bd7 7.a4 e6 8.Nf3 f6 (8...Nf6 9.Be2+=) 9.Qb3 (9.Nh4!? Qc7 10.Ng6+–) 9...Ne7+= 10.d4 Nf5 11.Bd3 Bb4 12.Nbd2 0-0 (12...Qe7 13.Rc1+/–) 13.0-0 (13.Bf5!? ef5 14.Qd5 Rf7+–) 13...Qe7 14.Rac1 g6 15.g4 Nd6 16.Bg6 (16.Bc3 Bc3 17.Rc3 Kg7+/–) 16...Qg7 17.Qd3 f5 18.Ne5 Bd2 19.Qd2 Rf6 20.Bh5+– Ne4 21.Qe2 Ng5 22.f4 Nh3 23.Kh1 Bc8 24.Rc8 Rf8 25.Rf8 Kf8 26.gf5 Nd7 27.Nd7 Qd7 28.Ba3 Kg8 29.Qg2 Qg7 30.Qh3 Kh8 31.Bd6 Rc8 32.Be5 (32.Be5 Kh7 33.Bg7 Rc2 34.Be2 Kg8 35.Qh6 ef5 36.Bf8 Kf7 37.Qg7 Ke6 38.Qe7#) 1–0. agostinhoarruda (2510) – sgrant (2045), net–chess.com, 2010.

3.c3 ab4 4.cb4 d6 5.Nf3= Be6 (5...Nf6 6.Nc3=) 6.Nc3+= Nf6 7.d4 Nd5 (7...Nbd7 8.e4+=) 8.e4 Nc3 9.Bc3 d5 (9...Ra2?? 10.Ra2 Ba2 11.Qa4 Nd7 12.Qa2+–) 10.e5 Nd7 11.Bd3 c6 (11...Nb6 12.a4+–) 12.0-0 b5 (12...g5!?+–) 13.a4+– Ra4 (better 13...ba4 14.Ra4 Nb6 15.Ra8 Qa8+–) 14.Ra4 ba4 15.Qa4 g5 (15...Qc8 16.b5 cb5 17.Bb5+–) 16.Qc6 Bg7 17.b5 0-0 18.Bb4 Nb6 (18...Qb8 19.Be7 Rc8+–) 19.Ba5 Qc8 (19...Bd7 20.Qb6 (worse 20.Bb6 Bc6 21.Bd8 Bb5 22.Bb5 Rd8+–) 20...Qb6 21.Bb6 Bb5 22.Bb5+–) 20.Bb6 Qc6 21.bc6 Rc8 (21...Ra8 22.Rb1 f6 23.Bc5+–) 22.c7 f6 (22...Ra8 23.Rb1 f6 24.ef6 Bf6 25.Bb5+–) 23.ef6 Bf6 24.Ba6 Ra8 (24...Re8 25.Bb7+–) 25.Bb7 Re8 (25...Rf8 26.Re1 Kf7 27.Re6 Ke6 28.c8R Rc8 29.Bc8 Kd6 30.Bc5 Kc7 31.Bf5+–) 26.Rc1 Bc8 27.Bd5 Kg7 28.Ne5 Be5 (28...g4 29.Ra1 Bf5 30.Bb7+–) 29.de5 e6 (29...Rf8 30.Bc5+–) 30.Bc6 Rf8 31.Rd1 h5 32.Rd8 g4 33.Bc5 Rg8 34.Bd7 Bb7 35.Be6 Rh8 (35...Re8 36.Re8 Kg6 37.Rf8 Bg2 38.Rg8 Kh7 39.c8Q Bf3 40.Be3 Bd5 41.Qc7) 36.Bf5 Rg8 (36...Bc8 37.Bc8 Kg6 38.Rh8 Kg5 39.Be3 Kg6 40.Be6 g3 41.c8Q gf2 42.Kf2 h4 43.Qg8) 37.Rd7 Kh6 38.Be3 Rg5 39.Rh7 1–0. Karl – Tynls, internet private, 2018.

2.Bb2 a6

3.a4 d6 4.e3 e6 5.Nf3 Nf6 6.b5 a5 7.d4 b6 8.Bd3 Bb7 9.Nbd2 Be7 10.0-0 Nd5 11.Re1 Nb4 (11...0-0 12.g3+=) 12.Bc4 (better 12.Be2 Nd5 13.e4+=) 12...Bd5? (12...0-0!?+=) 13.c3 (13.Be2!? Bf3 14.Bf3 c6+–) 13...Bc4+– 14.cb4 Bd5 15.ba5 ba5 16.e4 Bb7 17.Bc3 (17.Nb3 d5 18.Nc5 de4 19.Nb7 Qd5+–) 17...Nd7 (17...d5!?+–) 18.Nb3+– 0-0 (18...d5 19.Na5 Qb8 20.e5+–) 19.Na5 Nb6?? (better 19...Qb8+–) 20.Nb7 Qc8 (20...Qd7 21.Na5+–) 21.Na5 Rd8 (21...Re8 22.Nc6+–) 22.Nc6 Rd7 (22...Re8 23.a5 Nd7 24.a6+–) 23.a5 Nc4 (23...Bf6 24.ab6 cb6 25.Qd3+–) 24.Qd3 d5 (24...Na5 25.Ba5 g6 26.Bd2+–) 25.ed5 ed5 26.Ne7 Re7 27.Re7 Qd8 28.Rae1 Kf8 29.Qh7 Qe7 (29...Ne3 30.R1e3 Qe7 31.Qh8) 30.Qh8 1–0. DEFFM – GuestRJDF, freechess.org, 2019.

3.a4 d6 4.e3 e6 5.Nf3 Nf6 6.c4 Be7 7.Be2 0-0 8.0-0 Qe8 (8...d5 9.Qb3=) 9.d4+= Nh7 (9...Nbd7 10.Bd3+=) 10.Qb3 Kh8 11.Nbd2 f6 (11...Nf6 12.Bd3+=) 12.Rfe1 e5 13.Bd3 Nd7 (13...Qh5 14.a5+–) 14.Qc2 (14.Nh4 f5 15.Nf5 a5+–) 14...Ng5 15.Nh4 Kg8 (15...f5 16.Nf5 a5 17.b5+–) 16.f4 (16.Bg6 Nf7 17.Bh7 Kh8 18.Ng6 Kh7 19.Nf8 Kg8+–) 16...e4 (16...f5 17.Nf5 (17.fg5?! e4 18.Ne4 fe4 19.Be4 Bg5 20.Bd5 Rf7+–) 17...Nf7 18.a5+–) 17.Ne4 (17.fg5?! ed3 18.Qd3 fg5+=) 17...Ne4 18.Be4 Nb8 (18...f5 19.Bd5 Kh8 20.Nf5 Nf6 21.Ne7 Qe7+–) 19.Bd5 Rf7 20.Qg6 Bd8 (20...Nc6 21.Bc3+– (21.Qf7?! Qf7 22.Bf7 Kf7+–; 21.Bf7?! Qf7 22.b5 Na5+–)) 21.Be4 (better 21.e4 Nc6 22.e5 (worse 22.Qf7 Qf7 23.Bf7 Kf7+–; worse 22.Bf7 Qf7 23.Qf7 Kf7+–) 22...de5 23.fe5+– (23.Bf7?! Qf7 24.fe5 Nb4+–; 23.Qf7?! Qf7 24.Bf7 Kf7+–)) 21...Kf8 (21...f5 22.Nf5 Kf8+–) 22.Qh7 Ke7 23.Ng6 Kd7 24.Bf5 Kc6 25.d5 Kb6 26.Bd4 (better 26.a5 Ka7 27.Bd4 b6 28.Bc8 Be7+–) 26...c5 27.bc5 dc5 28.Reb1 (better 28.Bc8 Kc7 29.Bg4+–) 28...Ka5 (28...Kc7 29.Bc8 Kc8 30.Bc5 Ba5+–) 29.Bc3 1–0. DEFFM – GuestCJKZ, freechess.org, 2017.

3.a4 d6 4.e3 e6 5.Nf3 Nf6 6.Be2 d5 7.b5 Bd6=.

3.a4 e6 4.e3 c6 5.c4 d6 (5...Nf6 6.Qb3=) 6.Nf3 Be7 (better 6...e5!?=) 7.Bg7+– Rh7 8.Bb2 Bf6 (8...e5 9.a5+–) 9.d4+– a5 10.b5 c5 11.Bd3 Rh8 12.0-0 b6 13.Nc3 Ra7 14.Ne4 Bb7 15.Qe2 Be4 16.Be4 d5 17.cd5 ed5 18.Bc2 c4 19.e4 Re7 20.e5 Bg7 21.Qe3 (21.Ba3 Rb7+–) 21...Qd7 (21...Rc7 22.e6 Ne7 23.ef7 Kf7 24.Ne5 Kg8 25.Ng6+–) 22.Ba3 Re6 23.Bf5 Ne7 24.Be6 Qe6 25.Bd6 (25.Be7 Ke7 26.Rac1 Rc8+–) 25...Nd7 (25...Nf5 26.Qf4 (26.Bb8 Ne3 27.fe3 Bf8–/+) 26...Nd7 27.Bc7+–) 26.Rfe1 Nf5 27.Qf4 Bf8 28.h3 Bg7 29.g4 Ne7 30.Re3 (better 30.Nh4 Ng6 31.Ng6 fg6 32.Rac1+–) 30...f5 (30...Ng6 31.Qg3 Bf8+–) 31.ef6 Bf6 1–0. DEFFM – GuestPVQG, freechess.org, 2018.

3.c4 d6 4.e4 Nf6 5.Bd3 e5 6.Nf3 Bg4 7.0-0 Be7 8.h3 Bf3 9.Qf3 (9.gf3 Nh5 10.f4 Nf4–+) 9...Nc6 10.b5 ab5 11.cb5 Nd4 12.Bd4 ed4 13.a4 b6 14.Re1 Qd7?? (better is 14...Nd7=) 15.e5+– Ng8 (15...0-0 16.ef6 Bf6+–) 16.Qa8 Bd8 17.ed6 Kf8 18.a5 Qd6 19.ab6 Nf6 20.bc7 Qc7 21.Ra7 Qb6 22.Bc4 Kg8 (22...Ne4 23.Rf7 Kg8 24.Rf6 Qe6 25.Be6 Kh7 26.Qe4 g6 27.Qg6) 23.Bf7 (23.Rf7 Kh7 24.Bd3 Kg8 25.Qa2 Ne4 26.Rf6 Qe6 27.Qe6 Kh7 28.Be4 g6 29.Qf7) 23...Kh7+– 24.Bc4 Qc5 25.Bd3 Kg8 26.Qd8 Qf8 27.Qf8 Kf8 28.Ra8 (28.Bg6 Ne4 29.Re4 h5 30.Re8) 28...Kf7 29.Rh8 1–0. rcm06 (1905) – chesster0097, gameknot.com, 2012.

3.c4 e6 4.a4 Bb4 5.Bg7= Rh7 6.Bb2 (6.Bc3 Bc3 7.Nc3 d5=) 6...Bf8 (6...Nf6 7.Qb3 Nc6 8.Nf3=) 7.e3 (7.e4 d6=) 7...Nf6= 8.Bd3 (8.Qf3 Be7=) 8...Rh8 (8...Rg7 9.Qf3 Be7 10.Ne2=) 9.Nf3 Bg7 (9...Rg8 10.0-0=) 10.0-0 Nc6 11.Nc3 d6 12.Bc2 Ne5 (12...Rg8 13.d4+=) 13.Ne5+= de5 14.Ne4 Ne4 15.Be4 c6 (15...f5 16.Bf3+=) 16.d3 (16.f4 f5 17.Be5 Rg8 18.Qh5 Kf8+–) 16...Bd7 (16...f5 17.Bf3+–) 17.Qh5 (17.f4 Qb6 18.Qc1+–) 17...Qe7? (better 17...Qg5 18.Qe2 Rg8+=) 18.Be5+– Be5 19.Qe5 Rf8 (19...0-0-0 20.Rfb1 f6 21.Qd4+–) 20.Rab1 (better 20.Qc7+–) 20...f6? (20...f5 21.Bf3 Bc8+–) 21.Qc7 (21.Qh5!? Kd8 22.Rb7 c5+–) 21...Qd8 22.Qb7 Rc8 (22...Qc8 23.Qc8 Rc8 24.a5+–) 23.Qa6 Rf7 (23...f5 24.Bf3+–) 24.Rb6 (24.Bg6!? Ra8 25.Qb6 Qb6 26.Rb6 Ke7 27.Bf7 Kf7+–) 24...f5 (24...Ra8 25.Qb7+–) 25.Bc6 Bc6 26.Rc6 Rc6 27.Qc6 Qd7 28.Qd7 Kd7 (28...Rd7 29.d4+–) 29.d4 Ke7 30.c5 Rf8 31.Rb1 (31.a5 Ra8 32.Ra1 Kd7+–) 31...Rc8 (31...Ra8 32.Rb4+–) 32.Rb5 Kf6 (32...Ra8 33.a5+–) 33.f4 Kg6 (33...Kf7 34.Kf2+–) 34.Kf2 Kh5 (34...Kf7 35.a5 Ke8 36.Kf3+–) 35.Kf3 (35.Rb6 Ra8+–) 35...Kg6 36.Rb6 Kf6 37.Rb7 (37.a5!? h5+–) 37...Rc6 (37...Ra8 38.Rb4+–) 38.a5 Ra6 39.Rb5 Ke7 40.h3 Kd7 (40...h5 41.g4+–) 41.g4 Kc6 (41...Ra8+–) 42.Rb6 Rb6 43.ab6 Kb7 44.g5 hg5 45.fg5 Kc8 46.g6 Kd7 47.g7 Ke7 48.g8Q Kf6 (48...Kd7 49.b7 e5 50.b8Q e4 51.Kf4 Ke7 52.Qd6) 49.h4 (49.b7 e5 50.de5 Ke7 51.b8Q f4 52.Qd6) 49...Ke7 (49...e5 50.de5 Ke7 51.c6 f4 52.Qh7 Ke6 53.Ke4 fe3 54.Qd7) 50.Qg7 Kd8 (50...Ke8 51.b7 Kd8 52.b8Q) 51.Kf4 (51.b7 e5 52.b8Q) 51...Kc8 (51...e5 52.de5 Ke8 53.c6 Kd8 54.Qd7) 52.h5 (52.Qc7) 52...e5 (52...Kd8 53.b7 e5 54.Ke5 f4 55.b8Q) 53.de5 Kb8 (53...Kd8 54.b7 Ke8 55.b8Q) 54.h6 Ka8 (54...Kc8 55.Qc7) 55.h7 (55.h7 Kb8 56.h8Q; 55.Qa7) 1–0. BeepBeepImAJeep (2615) – karalyte (1635), lichess.org, 2017.

3.e3 Nc6 4.a3 d6 5.Nf3 f6 (5...Nf6!?=) 6.d4 (6.Nh4 g5 7.Ng6 Rh7+/–) 6...Na7 (6...Bg4!?+/–) 7.Nh4+– e5?? (better is 7...h5+–) 8.Qh5 Kd7 9.Bd3 (better is 9.Ng6 Qe8 10.Be2+– (10.de5?! fe5 11.Qh3 Kd8+–)) 9...Ne7+/– 10.de5 Qe8? 11.Qe8+– Ke8 12.ef6 gf6 13.Bf6 Rg8 14.g3 Nac6 15.f3 Kf7 16.Bb2 b5 17.Bh7 Rg5 18.Nd2 Bf5? 19.Nf5 Nf5 20.Bf5 Rf5 21.0-0 Re8 22.e4 Rg5 23.f4 Rg4 24.Kg2 Re6 25.h3 Rg8 26.f5 Re8 27.Rae1 Be7 28.h4! Bh4 29.Rf3 Rg4?? 30.Kh3+– Reg8 31.gh4 Nb8 32.Ree3 h5 33.Rg3 Rf4 34.Rg8 Kg8 35.Rf3 Rg4 36.Bd4 Nd7 37.Rg3 c5 38.Bc5! dc5 (38...dc5 39.Rg4 Combination; 38...Nc5 39.Rg4 Double attack (39.Rg4 Decoy)) 1–0. Fournier,Frederic – vesperon, Active, 2005.

3.e3 Nc6 4.a3 e5 5.c4 d6 6.b5 ab5 7.cb5 Nb8 8.Nf3 Nf6 9.Nc3 Be7 10.d4 ed4 (10...e4 11.Nd2 d5 12.Be2=) 11.ed4 0-0 12.Bd3 Bg4 13.0-0 Nbd7 14.Re1 Re8 15.h3 Bh5 16.g4 Bg6 17.Bg6 fg6 18.Qb3 Kh7 19.Qf7 Bf8 (better is 19...Ng8!?+=) 20.g5+/– Re7? (better is 20...Ng8+/–) 21.Re7+– Qe7 22.Qe7 Be7 23.gf6 Bf6 24.Kg2 Nb6 25.a4 1–0. Janek – Andrew, internet, 2016.

3.e3 Nc6 4.c4 Nb4 5.a3 Nc6 6.d4 e6 7.Nf3 Bd6?? (7...d5 8.Nbd2=) 8.g3 (better is 8.d5 Nce7 9.c5 Bc5 A) 10.Bg7?! Rh7 11.Bb2 d6= (11...Nd5? 12.Qc2+–; 11...ed5? 12.Qc2+–); B) 10.Qc2+/–) 8...Nf6=+ 9.Bg2 Ne4 (9...b5 10.c5 Be7 11.0-0=+) 10.0-0 0-0 11.Nbd2 Qf6?? (better is 11...Nd2 12.Nd2 b6=) 12.Ne4+– Qg6 13.Nd6 cd6 14.Rc1 f5 15.Nh4 Qf6 16.d5 (better is 16.Qb3 Ne7+–) 16...Qb2 17.dc6 dc6 18.Qd6 Qa3 (18...Qf6+–) 19.Qa3 Bd7 20.Rcd1 Rad8 21.Rd6 (21.Qa5 Kh7+–) 21...Rf6 22.Rc1 (better is 22.Rfd1 Rf7+–) 22...e5 23.Rd7 Rd7 24.Qb3 (24.Qc5 g5 25.Qe5 Rdf7+–) 24...e4 25.Rd1 Re7 26.Rd8 Kh7 27.c5 g5 28.Qg8 1–0. slavisa10 – AbrahamLinbloom, Live Game Caissa's Web, 2004.

3.e3 d6 4.c4 e5 5.a4 Nc6 (5...Nf6 6.d4=+) 6.b5= ab5 (6...Nb4 7.Bc3 a5 8.d4=) 7.ab5 Na7 (7...Ra1 8.Ba1 Nce7 9.d4 ed4 10.Bd4=) 8.Nf3 (8.d4 e4+=) 8...b6 (8...Nf6 9.Nc3 Bg4 10.Be2+=) 9.Nc3 Bb7 (9...Nf6 10.Be2+=) 10.d4+– Nc8 (10...ed4 11.ed4 d5 12.Ne5+–) 11.Ra8 Ba8 12.de5 Bf3 13.Qf3 de5 14.Nd5 Nf6 (14...Bd6!?+–) 15.Be5+– Bd6 (better 15...Nd5 16.Qd5 Qd7+–) 16.Bf6 gf6 17.Nf6 Kf8 18.Nd5 Ne7 (18...Rg8 19.Qh3 Kg7 20.Bd3+–) 19.Qf6 Rg8 (19...Kg8 20.Qh4+–) 20.Qh6 Ke8 (20...Rg7 21.Qf6 Qa8 22.Ne7 Be7+–) 21.Nf6 1–0. GuestKMYB – GuestVHBW, freechess.org, 2018.

3.e3 d6 4.c4 e6 5.c5 Be7 (better 5...Nf6!? 6.d4 Be7=) 6.Bg7+– Rh7 7.Bb2 e5 8.cd6 Rh8?? (better 8...Bd6 9.Qa4 Bd7+=) 9.de7 (9.Be5!? Bd6 10.Bh8 Bb4 11.Qa4 Nc6+–) 9...Qd5 (9...Qe7 10.Nf3 Nc6 11.a3+–) 10.Nc3 Qb5 (10...Qe6+–) 11.Nb5 ab5 12.Be5 c6 13.Qb3 (better 13.Bh8 Na6+–) 13...Be6 14.Bh8 (better 14.Qd3 Na6 15.Bh8 Nb4+–) 14...Bb3 15.Bd3 (better 15.ab3 Ra1 16.Ba1 Na6+–) 15...Ra2 16.Ra2 Ba2 17.Ne2 f6 (17...Na6 18.Bc3+–) 18.0-0 (better 18.Bh7 Ke7 19.Ng3 Na6+–) 18...Kf7 (18...Na6 19.Bh7 Ne7 20.Bf6 Nb4 21.Ra1+–) 19.Bg6! Kg6 (19...Ke7 20.Ra1 Bf7+–) 20.e8Q Bf7 (20...Kh7 21.Nf4 Ne7 22.Bf6 Bg8 23.Qe7 Bf7 24.Qf7) 21.Qe4 (21.Nf4 Kf5 22.Qf7 Na6 23.Qh5 Ke4 24.d3) 21...f5 22.Nf4 Kh7 23.Qf5 (23.Qe5 Nf6 24.Qf6 Bd5 25.Qg7) 23...Kh8 24.Qf7 Na6 (24...Ne7 25.Nh5 Nf5 26.Nf6 Ne3 27.Qf8) 25.Ng6 1–0. Agiant – chessboy2800, lichess.org, 2019.

3.e3 e6 4.a3 Nf6 5.Nf3 d5 6.d3 Nbd7 7.Be2 c5 8.bc5 Bc5 9.0-0 b5 10.Nbd2 Bb7 11.a4 ba4 12.Ra4 Bc6 13.Ra2 Qc7 14.Qa1 0-0 15.Ne5 (15.Ra6?? Ra6 16.Qa6 Ra8 17.Qa8 Ba8–+) 15...Bb7 (better is 15...Ne5!? 16.Be5 Bd6 17.Bd6 Qd6+=) 16.Nd7+– Nd7 17.Bg7 Rfe8 18.Bh6 e5 19.Bg4 Nf6 20.Bf5 Qc6 21.Nb3 Bf8? (better is 21...Bb4+–) 22.Na5 Qc7 23.Bf8 (23.Nb7?! Bh6 24.Na5 Red8+–) 23...Kf8 24.f4 e4 (24...Bc8 25.fe5 Bf5 26.Rf5 Ng4+–) 25.Qf6 Rad8 (25...Ra7 26.Nb7 Qb7 27.de4+–) 26.Qh6 (better is 26.Nb7 Qb7 27.Ra6 ed3 28.Qh8 Ke7 29.Qh4 Kf8+–) 26...Ke7 27.Nb7 Qb7 28.Ra6 ed3 29.Qh4 Kf8 30.Rh6 (30...Qb2 31.Rh8 Qh8 32.Qh8 Ke7 33.Qh4 Kf8 34.Rb1+–) 1–0. b4_player (2150) – DurianD8, GameColony.com, 2004.

3.e3 e6 4.a4 Bb4 (4...Nf6 5.b5=) 5.Bg7 Rh7 6.Bb2 (6.Bc3 Bc3 7.Nc3 d6=) 6...Nf6 7.c4 (better 7.Qf3 Be7 8.Bd3=) 7...b6?? (7...Nc6 8.Na3=) 8.Qc2?? (better 8.Qf3 Nc6 9.Bf6+–) 8...Bb7=+ 9.Nf3 (9.Bc3 Nc6=+) 9...Be4 (9...Rg7 10.Qd1=+) 10.Qd1 (10.Bd3 Bd3 11.Qd3 Rg7=) 10...Rg7 (10...d5 11.Nc3=) 11.Nc3 Bc3 (11...Bb7 12.Na2 Ba5 13.Bc3=) 12.Bc3+= Rg8 (12...d6 13.a5+=) 13.d3 Bb7 14.g3 (14.e4 Nc6+=) 14...Ng4 (14...Nc6 15.Rb1+=) 15.Bg2+= d6 16.e4 (16.0-0 Nd7+=) 16...Nc6 17.0-0 Ne7 (17...e5!?+=) 18.h3+– Nf6?? (better 18...Ne5+–) 19.Bf6+– Qd7 (19...Rb8 20.Nh4+–) 20.a5 b5 (20...ba5 21.d4+–) 21.Be7 (21.cb5 ab5 22.Qe2 c5+–) 21...Ke7 22.cb5 ab5 23.Nd4 (23.Qd2 c5+–) 23...e5 (23...c5 24.Nb3+–) 24.Nf5 Kd8 (24...Ke8 25.Nh6 Rg6 26.Qh5+–) 25.Nh6 (25.d4 ed4 26.Qd4 Qe6+–) 25...Rg6 (25...Rh8 26.Qh5 Ke8 27.Qg5+–) 26.Ng4 (26.Qh5 Qe6 27.Ng4 Qb3+–) 26...Qc6 (26...c5 27.f4+–) 27.Qb3 (better 27.d4 ed4 28.Qd4 Qe8+–) 27...f5 (27...Qe8 28.f4 Bc8 29.f5+–) 28.Rfc1 (better 28.Qf7 Qe8 29.Qe8 Ke8 30.ef5 Bg2 31.fg6 Bf1 32.Kf1 b4+–) 28...Qd7 (28...Ra5 29.Rc6 Ra1 30.Kh2 Bc6 31.ef5 Rg4 32.Bc6 Rc1+–) 29.ef5 Qf5 (29...Bg2 30.fg6 Bf3 31.Qg8 Qe8 32.Qh7+–) 30.Bb7 Rb8 31.Be4 (31.a6 Qe6 32.Qe6 Re6+–) 31...Qg5 32.Bg6 (32.Qf7 c5 33.Bg6 Qe7 34.Ne5 Qf7 35.Nf7 Kc7+–) 32...Qg6 33.a6 Ra8 34.a7 Ra7 35.Ra7 c5 (35...Kd7 36.Rac7 Kd8 37.Rc8 Kd7 38.R1c7) 36.Ra8 (36.Qb5 Qf5 37.Qb6 Ke8 38.Qb8 Qc8 39.Qc8) 36...Kd7 37.Qb5 (37.Qd5 Ke7 38.Ra7 Kf8 39.Qf3 Kg8 40.Qa8 Qe8 41.Qe8) 37...Kc7 (37...Ke7 38.Ra7 Ke6 39.Qd7 Kd5 40.Ne3 Kd4 41.Qa4 Kd3 42.Qd1 Ke4 43.Rc4) 38.Ra7 Kc8 39.Qb7 Kd8 40.Ra8 (40.Qd7) 1–0. GuestLHZS – GuestTHNN, freechess.org, 2016.

3.e3 e6 4.c4 d6 5.Nf3 Nd7 6.Be2 Ne7 (6...Ngf6 7.0-0+=) 7.0-0 e5 8.d3 Nf6 9.Nbd2 Be6 10.e4 Qc8 (10...g5 11.d4 g4 12.de5 gf3 13.ef6 fe2 14.fe7 ef1R 15.Qf1 Be7 16.Bh8+–) 11.d4+– Ng6 (11...ed4 12.Nd4 Ng6 13.Ne6 Qe6 14.f4+–) 12.de5 de5 13.Ne5 Nf4 14.Ndf3 (better 14.Re1!?+–) 14...Ne2+= 15.Qe2 Bb4 16.Qc2 0-0 17.Nd3 Be7 18.e5 (18.Nf4 c6+=) 18...Ne4= 19.Nf4 Bf5 20.Qb3 Bg4 (better 20...c6=) 21.Nd4 (better 21.Nd5 Bc5 22.Qd3 Bf3 23.gf3=+) 21...Nd2–/+ 22.Qc3 (22.Qg3 Nf1 23.Rf1 c5–/+) 22...Nf1–+ 23.Rf1 a5 (23...Re8!?–+) 24.Nd5 Bb4 (better 24...Re8–/+) 25.Nb4? (better 25.Qg3 Be6 26.a3 Bd5 27.cd5=) 25...ab4–+ 26.Qb4? (better 26.Qb3–+) 26...Be6 (better 26...c5 27.Qb3 cd4 28.Bd4 Be2–+) 27.Qc3 (27.Qb3 Ra6–/+) 27...c5 (27...Ra2 28.Rb1–+) 28.Ne6–/+ Qe6 Black gets strong initiative 29.a3 Ra4 30.Rc1 Rd8 31.f4 (31.h3!?–/+) 31...Rd4–+ 32.Qg3 (32.Qf3 Rac4 33.Rc4 Rc4 (33...Qc4?! 34.Bd4 Qd4 35.Kf1=+) 34.Qb7 Qf5–+) 32...Rac4 (better 32...Rdc4 33.Qd3 Rc1 34.Bc1 Rd4–+) 33.Rc4?? (better 33.Rf1 Rd2 34.Bc1–+) 33...Qc4 (better 33...Rd1 34.Kf2 Qc4–+) 34.Bd4–/+ cd4 35.f5 (35.Kf2!?–/+) 35...d3 36.f6 (36.Qe3 Qd5 37.Qd2 Qc5 38.Kf1 Qa3–+ (worse 38...Qe5 39.Qd3 Qh2 40.g3=+)) 36...g6 (36...Qc1 37.Kf2 Qd2 38.Kf1 Qe2 39.Kg1 g5–+) 37.e6?? (better 37.Qe3 Qc2 38.e6 Qb1 39.Kf2 Qa2 40.Kg3 Qe6 41.Qd3 Qe5 42.Kh3 Qf6 43.g3–/+) 37...d2–+ (37...Qe6?! 38.Qd3 Qe1 39.Qf1 Qe3 40.Qf2 Qc1 41.Qf1 Qa3 42.Qf4–/+) 38.Qb8 Kh7 39.ef7 The mate threat is Qg8 39...d1Q (39...Qd4 40.Kf1 d1Q) 40.Kf2 Qce2 (40...Qcd4 41.Kg3 Q1g4) 41.Kg3 Qdd3 42.Kh4 Qee4 (42...Qh5) 43.g4 g5 44.Kh5 Qg6 0–1. aravind555 – TMXTHO, lichess.org, 2018.

3.e3 e6 4.Be2 d6 5.Nf3 Nd7 6.0-0 c6 7.a4 (7.c4 Ngf6+=) 7...e5 8.Ne1 (8.c4 Ngf6+=) 8...Be7 9.f4 Ndf6 (9...Ngf6 10.a5=) 10.fe5+= de5 11.Be5 Bd6 (11...Bb4 12.Nd3 Bd6 13.Nc3+=) 12.Bb2 (12.Bd6 Qd6 13.Nd3+–) 12...Ne4? (12...Bb4 13.Nd3 Bd6 14.Nf4+=) 13.Bh5 (better 13.Bg7!? Rh7 14.Bd4+–) 13...Be6 14.Bg7 Rh7 15.Bb2 (15.Bd4 Qh4 16.g3 Ng3 17.hg3 Qg3 18.Ng2 Qh2 19.Kf2 Bg3 20.Kf3 Bd5 21.e4 Be5 22.Be5 Qe5 23.ed5 Qd5 24.Kf2 Qd4 25.Ne3 Qa1+–) 15...Qh4=+ 16.Nf3? (16.g3 Ng3 17.hg3 Qg3 18.Ng2 Qh2 19.Kf2 Bg3 20.Kf3–/+) 16...Qh5–+ 17.h3 (17.d3 Ng5 18.Nbd2 Bb4–+) 17...Ng3 (17...Bh3 18.gh3 Qh3 19.Qe2–+) 18.Rf2 0-0-0 (18...Bb4 19.d3–+) 19.Nc3 (19.b5 cb5 20.ab5 Qb5–+) 19...Nf6 (19...Bb4!? 20.Nd4 Qg6 21.Ne6 fe6 22.Rf4–+) 20.b5 Nfe4 21.bc6 bc6 22.Ne2?? (22.Ne4 Ne4 23.Qe2–+) 22...Rg8 (22...Nf2 23.Kf2 Ne4 24.Kf1–+) 23.Ng3 (23.d3 Nf2 24.Kf2 Ne2 25.Qe2 Bh3 26.gh3 Bg3 27.Kf1 Qh3 28.Qg2 Qg2 29.Kg2 Be5 30.Kf2 Bb2–+) 23...Rg3 (23...Bg3 24.Re2 Bh3 25.Be5 Be5 26.Ne5 Bg2 27.Rg2 Rg2 28.Kg2 Rg7 29.Ng4 Rg4 30.Qg4 Qg4 31.Kh1 Qf3 32.Kh2 Qf2 33.Kh3 Qg3) 24.Re2 (24.Qf1 Kb7 25.Rb1 Nf2 26.Kf2–+) 24...Bh3 25.Ne1 (25.Qf1 Rg6 26.Rf2–+) 25...Bg4 26.d3 Be2 27.Qd2 Nd2 (27...Rg2 28.Ng2 Qh2) 28.Bc3 (28.Bf6 Qf5 29.Be5 Qf1 30.Kh2 Be5 31.d4 Rg2 32.Kh3 Qh1) 28...Nf3 (28...Rg2 29.Ng2 Bg3 30.Nh4 Qh4 31.Bd2 Qh2) 29.Kf2 (29.Nf3 Qf3 30.Rb1 Qg2) 29...Ne1 30.Re1 (30.Rb1 Rg2 31.Ke1 Qh1 32.Kd2 Bf3) 30...Qf5 (30...Rg2 31.Kg2 Qh2) 31.Ke2 Rg2 32.Kd1 Ba3 (32...Qf2 33.Rg1 Rg1 34.Be1 Qe1) 33.Bd2 (33.Bb2 Qf2 34.Re2 Qe2 35.Kc1 Qc2) 33...Qf3 34.Re2 Rg1 (34...Qe2) 35.Be1–+ Bb4 (35...Bb4 36.c3 Rg2 37.Kc1 Qe2 38.Bf2 Ba3 39.Kb1 Qb2) 0–1. Akrapovik – tuiuiu_1969, lichess.org, 2019.

3.e3 e6 4.Nf3 Bb4 5.Bg7+= Rh7 6.Bb2 Be7 7.Ne5 (7.Bd3 f5+=) 7...Bf6 (7...Nf6 8.d4=) 8.Bd3 (8.d4 Rg7+=) 8...Rg7= 9.Nc4? (9.Be4!?=) 9...Bb2 (9...Nc6 10.f4–/+) 10.Nb2 Qf6 11.Nc3 b5 (11...Rg2 12.Qe2–/+) 12.Rb1 (12.Be4 d5 13.Bf3 c6=) 12...b4 (better 12...Rg2!? 13.Ne4 Qg7–/+) 13.Ne4= Qe7 14.Ng3 Bb7 15.0-0 Nc6 16.Be4 Rb8 (16...Nf6 17.Bf3=) 17.Nd3 a5 18.Qh5 (better 18.c4 Nf6 19.Bc6 Bc6 20.Ne5=) 18...Na7?? (better 18...Nf6!? 19.Qe2 d5=+) 19.Bb7 (better 19.Qa5 Be4 20.Ne4+–) 19...Rb7+– 20.Qe5 (20.Qa5 Nc6 21.Qa8 Rb8+–) 20...f6? (better 20...Qg5!?+=) 21.Qa5+– Nc6 22.Qa8 (22.Qh5 Qf7 23.Qf7 Kf7+–) 22...Rb8+– 23.Qa4 Kf7 (23...Rb7 24.c3 Ra7 25.Qc2 bc3 26.dc3+–) 24.Ne4 (better 24.a3 ba3 25.Rb8 Nb8 26.Ra1+–) 24...d5? (24...Rb7 25.c3 Ra7 26.Qd1 bc3 27.Qh5 Kf8 28.Nc3+–) 25.Nec5 (better 25.Qc6 Rb6 26.Qa8 de4 27.Qe4+–) 25...f5?? (better 25...Qd6+–) 26.Qc6 Nf6 (26...Qd6 27.Qd7 Qd7 28.Nd7+–) 27.Ne5 Kg8 28.Ne6 Rh7 29.Ng6 (29.d4 Rb6 30.Qa8 Qe8 31.Qe8 Ne8+–) 29...Qf7 (29...Qe8 30.Qe8 Re8 31.Ngf4+–) 30.Nef4 Re8 (30...Rb6 31.Qa8 Qe8 32.Qe8 Ne8 33.d4+–) 31.Rb4 Ne4 (31...Rg7 32.Nh4 Kh7 33.Rb7+–) 32.Rb7 (better 32.d3 Nf6 33.Nh4+–) 32...Kg7 (32...Nd6 33.Ra7 Rg7+–) 33.Rc7 Qc7 Black gets deadly initiative 34.Qc7 Kf6 35.Qd6 (35.Qh7 Nc3 36.dc3 Re5 37.Qh8 Kg5 38.f3 Re3 39.h4) 35...Nd6 36.Nd5?? (better 36.d4 Rc8 37.Ne5 Rc2 38.Nd5 Ke6 39.Nb4+–) 36...Kg6+= 37.f4 (37.Rb1 Re5 38.Nc3 Rd7=) 37...Ne4 (better 37...Ra7 38.Ra1 Nc4–/+) 38.Rf3?? (38.Rb1 Re6 39.g4 Nd2 40.gf5 Kf5 41.Rb5=+) 38...Nd2 39.Rg3 Kf7 40.Kf2? (better 40.e4 Ne4 41.Rb3–+) 40...Ne4 41.Kf3 Ng3 (41...Ng3 42.Kg3 Re4–+) 0–1. aravind555 (1605) – nkumarvk, lichess.org, 2020.

3.e4 Nc6 4.a3 e5 5.c4 Nf6 6.b5 (6.Nf3 d6 7.Nc3 Be7=) 6...ab5=+ 7.cb5 Nd4 8.d3 (8.Nf3 Bc5 9.Nd4 ed4=+) 8...Bc5–/+ 9.Nf3 d6 (better 9...Nf3 10.Qf3 d6=+) 10.Nc3? (10.Nd4 Bd4 11.Bd4 ed4=+) 10...c6 (10...Ng4 11.Ng1–+) 11.a4 (11.Nd4 Bd4 12.Qd2 0-0–/+) 11...0-0 (11...Ng4 12.bc6 Nf3 13.Qf3 Nf2 14.d4 ed4 15.Bc4–+) 12.Ne2 (12.Be2 Be6 13.0-0 Qa5–/+) 12...Re8 (12...Nf3 13.gf3 Qb6 14.d4 Bb4 15.Bc3 Bc3 16.Nc3 ed4 17.a5–+) 13.Nfd4 (13.Ned4 ed4 14.Bd4 Qa5 15.Ke2 Bd4 16.Nd4 Qc3–+) 13...ed4 (13...Bb4 14.Bc3 Bc3 15.Nc3 ed4 16.Ne2 Qa5 17.Qd2 cb5 18.Nd4 ba4 19.Qa5 Ra5 20.Kd2–+) 14.Nd4 (14.Bd4 Bd4 15.Nd4 Qb6=+) 14...Bd4 (better 14...Qa5!? 15.Ke2 Ne4 16.de4 Qb4–/+) 15.Bd4= d5 16.e5 Nd7 17.Qe2 (better 17.f4!?=) 17...c5 18.Bb2 d4 19.f4 f6 20.e6 Nf8 21.f5 (better 21.Kf2!? Be6 22.Qc2–/+) 21...Be6–+ 22.0-0-0? (better 22.Kf2 Bf5 23.Qf3–+) 22...Bb3 23.Qf3 Bd1 (23...Ra4 24.Qb7 Qa5 25.Qa6–+) 24.Kd1 (24.Qd1 Qd6 25.Be2 Qf4 26.Kb1 Qf5–+) 24...Qb6 (24...Qa5 25.Qd5 Kh7 26.Kc2–+) 25.Be2 (25.Qd5 Kh7 26.Qc4 Qa5–+) 25...Ra4 26.Ke1 (26.Qd5 Kh7 27.Qb3–+) 26...Qb5 27.Kf2 (27.Bc1 c4 28.Kf1 Ra2 29.dc4 Qb1–+) 27...Qb2 28.g4 (28.Re1–+) 28...Ra2 29.Re1 Nh7 (29...Re3 30.Qd5 Kh7 31.Qa2 Qa2 32.h3–+) 30.h4 b5 (30...Re3 31.Qd5 Kh8 32.Qa2 Qa2 33.g5–+) 31.Qd5 (31.Kf1–+) 31...Kh8 32.Qf3 b4 (better 32...Re3 33.Kg2 Rf3 34.Kf3–+) 33.Kf1 Re3 34.Qc6 (34.Qf2–+) 34...Re2 35.Qc8 (35.Qe8 Re8 36.Re8 Nf8 37.Rf8 Kh7 38.Rh8 Kh8 39.g5 Qc1) 35...Nf8! 36.Qf8 Kh7 (36...Kh7 37.Qg7 Kg7 38.Rd1 Re1 39.Re1 Qf2) 0–1. aravind555 – lucky_mike, lichess.org, 2018.

3.g3 b6 4.Nf3 Bb7 5.Bg2 e6 6.0-0 Ne7 (6...Nc6!?= 7.Na3 Nb4 8.Nc4 Nf6 9.a3 Nc6) 7.Nc3 Nd5 (7...Nbc6!?+/– 8.a3 Nf5 9.e4 Nd6) 8.Nd5 Bd5 9.c4 Bb7 (9...Be4+/–) 10.Qc2 Nc6 11.a3 a5 12.b5 Ne7 13.d4 c5 (13...Ng6!?+/–) 14.dc5+– bc5 15.Rad1 Qc7 16.Be5 Qb6 (16...Qd8 17.Rfe1+–) 17.Rd6 Qd8 18.Rfd1 Nd5 19.cd5 Bd6 20.Bd6 Bd5 21.Rd5! ed5 22.Qc5 Rc8 23.Qe3 Qe7 24.Qe7# 1–0. pierre – potyq, internet, 2010.

2.Bb2 b6

3.e3 Bb7 (--> 1.b4 b6 2.Bb2 Bb7 3.e3 h6).

3.Nf3 Bb7 4.e3 d6 5.Be2 e6 6.0-0 Nf6 7.Bf6 Qf6 8.c3 Nd7 9.d4 c5 10.Nbd2 Be7 11.bc5 dc5 12.Qc2 0-0 13.a3 Rfc8 14.Rac1 e5 (14...cd4 15.ed4 Ba3 16.Ra1–/+) 15.Qd3 ed4 16.cd4 cd4 17.Nd4 Nc5 18.Bf3?? (better is 18.Qf5=) 18...Nd3–+ 19.Ra1 (19.Rc8 Rc8 20.Bb7–+) 19...Bf3 20.N2f3 Bc5 21.Rad1 Ne5 22.Ne5 Qe5 23.Nf3 Qf6 24.h3 Rd8 25.Rc1 Ba3 26.Rb1 Bc5 27.Rfe1 a5 28.e4 a4 29.Re2 a3 30.Ra2 Ra4 31.e5 Qf5 32.Re1 g5 0–1. workchess (2265) – hobgoblin (2205), net–chess.com, 2011.

2.Bb2 c6

3.c4 Qc7 4.e3 (4.e4 Nf6 5.e5 Nh7+=) 4...d6 (4...e5 5.a3=) 5.Nf3 (5.d4 e5+=) 5...Bg4 (5...e5 6.Be2=) 6.Be2 Nd7 (6...e5 7.0-0+=) 7.d4 (7.h3 Bf5=) 7...Bf3 (7...e5 8.Nbd2+=) 8.Bf3 Ngf6 9.0-0 g5 (9...d5 10.cd5 cd5 11.Nc3+=) 10.Nc3 (10.b5 cb5 11.cb5 d5+–) 10...Rg8 (10...Bg7 11.a4+–) 11.b5 Nb6 12.bc6 Nc4?? (better 12...bc6 13.Be2 Bg7+–) 13.cb7 Rb8 14.Qa4 Nd7 (14...Kd8 15.Nb5 Qb6 16.Qc4 Rb7 17.Bb7 Qb7 18.Rfc1+–) 15.Nb5 Qb6 (15...Qd8 16.Qc4 e6 17.Nc7 Ke7 18.Na6+–) 16.Qc4 Bg7 (16...e6 17.Qc8 Qd8 18.Na7+–) 17.Qc8 (17.Qc8 Qd8 18.Na7+–) 1–0. GuestBNTW – AJRMAX, freechess.org, 2018.

3.e3 a6 4.Nf3+= b5 (4...d6 5.d4+=) 5.Be2 Bb7 (5...Nf6 6.a4+=) 6.0-0 (6.Ne5 d6 7.Nf7 Kf7 8.Bh5 g6 9.Bh8 gh5 10.Qh5 Ke6 11.Qg4 Kf7+–) 6...d6 (6...e6 7.c3+=) 7.Ne1 (7.a4 Nf6+–) 7...Nd7 8.f4 e6 9.f5 Qc7 (9...e5!?=) 10.fe6+– fe6 11.Bh5 Kd8 12.Bg4 Ke7 (better 12...e5 13.Bd7 Kd7+–) 13.Qf3 (better 13.Be6 Ngf6 14.Bf5+–) 13...Ngf6= 14.Bh5 (14.Qh3!? Ng4 15.Qg4=) 14...c5=+ 15.Qg3?? (15.Qe2 cb4 16.Bg6 Kd8=+) 15...cb4 (better 15...Nh5 16.Qf2 Nhf6 17.bc5 Qc5–+) 16.Bg6=+ Rb8 17.a3 ba3 18.Ba3 Be4 19.Nc3? (better 19.Be4 Ne4 20.Qg6=+) 19...Bg6–+ 20.Qg6 Rb6?? (better 20...b4 21.Bb4 Rb4–+) 21.Nd3 Kd8?? (better 21...a5 22.Ne4 Rc6=+ (worse 22...Qc2 23.Nf6 Nf6 24.Ne5+–)) 22.Qg3?? (better 22.Bb4!?+–) 22...Rg8?? (22...d5 23.Qc7 Kc7 24.Bf8 Rf8 25.Ra5–/+) 23.Nb4?? (better 23.Bb4 d5 24.Ba5 Qg3 25.hg3+=) 23...a5 (23...d5 24.Qh4–+) 24.Nd3–/+ b4 25.Bb4? (better 25.Na4 Rb7 26.Nf4–/+) 25...ab4–+ (25...Rb4?! 26.Nb4 ab4 27.Nb5=+) 26.Ra8 (26.Nf4 Ke7 27.Na4 Rc6–+) 26...Ke7 27.Na4 (27.Na2 Qc2 28.Nab4 Qb3–+) 27...Rb8 (27...Rb5 28.Qf3 Rf5 29.Nf4 Qc2 30.g4–+) 28.Ra6 (28.Rb8 Qb8 29.Rb1 d5 30.Qb8 Nb8 31.Nb4 Nbd7–+) 28...Ne5 (better 28...e5–+) 29.Ne5–/+ de5 30.c3 (30.d4 Rb5 31.Nc5 Rc5 32.dc5 Qc5–/+) 30...b3 31.Nb2 (31.d4 Kf7 32.de5–+) 31...Kd8?? (31...g5 32.c4–+) 32.Ra4?? (better 32.Rf6 gf6 33.Qg8+–) 32...Be7–+ 33.Qe5?? (33.Rc4 Qb6 34.d4–+) 33...Qe5 34.Rd4 Ke8 35.Nc4 Qc7 (35...Qc5!? 36.d3–+) 36.Nb2 Ng4! 37.h3 (37.Rg4 Qd6 Combination) 37…Qh2 0–1. Akrapovik (1635) – Igorillazzz (1650), lichess.org, 2020.

3.e4 d6 4.c4 Nd7 5.Nf3 Ngf6 6.Nc3 g5 7.Be2 Bg7 8.0-0 (8.d4 g4 9.Nh4 e6+=) 8...Nf8 (8...Ne4 9.d4 Nc3 10.Bc3=+) 9.a4 (9.d4 Ne6+=) 9...Ng6 (9...Ne4 10.a5=) 10.Qc2 (10.d4!?+=) 10...g4= 11.Nd4 Ng8 (better 11...Nf4!?=) 12.Nf5+– Bf6 (12...Bf5 13.ef5 Ne5 14.Ne4+–) 13.Bg4 h5 14.Bh3 (14.Bf3 Nh6+–) 14...Qb6 (14...Nf4 15.Kh1=) 15.b5 (better 15.Ne2!?+–) 15...Nf4= 16.a5 Qc7 17.d4 (17.Rfe1 Nh3 18.gh3 Nh6=) 17...Nh3 18.gh3 e6 (18...Bf5 19.ef5 cb5 20.Nb5=) 19.Ne3 Bd4 (better 19...Ne7 20.Rfd1 e5 21.de5 Be5=) 20.Ng2 (better 20.Ncd5!? cd5 21.Bd4+=) 20...f5 (20...e5 21.Qd3–/+) 21.Rfe1 (21.Ne2 Bb2 22.Qb2 e5 23.ef5 cb5 24.cb5 Bf5=+) 21...Kd7 (better 21...e5=+) 22.Re2 (22.Re2 Ne7 23.Nd1 Bb2 24.Qb2=; 22.b6 Qd8 23.Nb5 cb5 24.Bd4+–) 1–0. aravind555 – Masterglass, lichess.org, 2018.

2.Bb2 Nc6

3.b5 Na5 4.Nf3 e6 5.e3 d5 6.Bd3 Nf6 7.Be5 Bd6 8.Nc3 Be5 9.Ne5 Qd6 10.f4 Ne4 (better 10...c5!?+=) 11.Be4 de4 12.0-0 Nc4?? (better 12...0-0+–) 13.Nc4+– Qc5 14.Ne5 Bd7 (14...0-0 15.Rb1+–) 15.Ne4 (worse 15.Nd7 Kd7 16.Ne4 Qb5+–) 15...Qb5 (15...Qe7 16.c4+–) 16.Qg4 0-0-0 (16...Bc6 17.Rfb1 Qa5 18.Qg7+–) 17.Nf7 h5 (17...Qd5 18.Nh8 Qe4 19.Nf7+–) 18.Qg6 Rh6 (18...Qc6+–) 19.Qg7 Qd5 (19...Be8 20.Nd8 Rg6 21.Qe7+–) 20.Nd8 Qe4 21.Qf8 b6 22.Nc6 Kb7 23.Qb8 Ka6 24.Qa7 Kb5 25.Nd4 Kc5 26.Qc7 Bc6 27.Qe7 Kc4 28.d3 Qd3 29.cd3 Kd3 30.Rfd1 Ke3 31.Qa3 Kf4 32.Qg3 Ke4 33.Qf3 Ke5 34.Nc6 1–0. Janek – zandar, internet, 2017.

3.b5 Nb8 4.e4 e5 (4...Nf6 5.Nc3+=) 5.Nf3 (5.Be5 Qe7 6.Bc7 d5+–) 5...d6+= 6.h3 a6 7.d4 ed4 8.Qd4 ab5 9.Bb5 Bd7 10.Bc4 Nf6 11.0-0 Be7 12.Nbd2 b5 13.Be2 0-0 14.a3 Re8 15.Kh1 (15.c4 bc4 16.Bc4 Nc6+=) 15...Qc8 (15...c5 16.Qd3=) 16.Ng1 (16.c4 bc4 17.Bc4 Nc6+=) 16...Nc6 17.Qe3 Be6 (17...Na5!?=) 18.Bb5+= Bd7 19.Bc4 Rb8 20.Rab1 Rb6 (20...Ne5 21.Be5 de5 22.Ngf3+–) 21.f4 (21.Bf6 Bf6 22.Rb6 cb6 23.Qb6 Ne5+–) 21...Qb8 22.Qc3 Qc8 23.f5 (23.g4!? Rf8 24.g5+–) 23...Ne5+= Black launches an attack 24.Ngf3 Nc4 25.Nc4 (worse 25.Qc4 Bb5 26.Qa2 Bf1 27.Rf1 Qb7–/+) 25...Rb5 26.g4 White prepares the advance e5 (26.Ncd2 Qa8+=) 26...Bc6 (better 26...Rc5 27.Nfd2 Bb5=+) 27.e5?? (better 27.Ncd2 Qb7 28.a4=) 27...Ne4–+ 28.Qe1 (28.Qd3 Ng3 29.Kg2 Nf1 30.Kf1 Bf3 31.Qf3 Qa6–+) 28...Ng5 29.Kg2 Qb7 30.Qe2 (30.Qc3 Nf3 31.Rf3 de5 (31...Bf3?! 32.Qf3 d5 33.a4–+) 32.Ne5 Be4–+) 30...de5 31.a4 Nf3 32.Rf3 Rb4 33.Na5 Bf3 (33...Rb2?! 34.Nb7 Rb1 35.Na5=+) 34.Qf3 Qf3 35.Kf3 e4 36.Ke3 Reb8 37.Nc6 (37.Nb3 Bg5 38.Ke2–+) 37...Bg5 (37...Rb2?! 38.Ne7 Kf8 39.Rb2 Rb2 40.f6–+) 38.Ke2 Rb2 39.Nb8 Rb1 40.Nc6 Rh1 41.a5 Rh3 42.a6 (42.Kf1 Rh1 43.Kg2 Rc1–+) 42...Rc3 (42...Rh2 43.Kf1 Rc2 44.Nb4 Rc1 45.Kg2–+) 43.a7 (43.Nb4 Ra3–+) 43...Rc2 44.Kd1 Ra2 45.Ke1 Be3 (better 45...e3 46.Nd4–+) 46.Ne7 Kf8 47.Nd5 Ba7 48.Nc7 (48.Nc3 Rg2 49.Ne4 Bd4–+) 48...Bf2 (48...Ra5 49.Kf1–+) 49.Kf1 e3 (better 49...Bd4 50.Nd5–+) 50.Nd5 Ra5 51.Nc3 g6 (51...h5!? 52.gh5 Rf5 53.h6 gh6 54.Ne4–+) 52.fg6 fg6 53.Ne4 (53.Kg2 h5 54.gh5 gh5–+) 53...Ra4 54.Nf2 (54.Nc5 Ra2 55.Ne6 Kf7–+) 54...ef2 (54...Rf4 55.Ke2 ef2 56.Kf1 h5 57.gh5 gh5 58.Ke2 f1Q 59.Kd2 Qg2 60.Ke3 Qg3 61.Ke2 Rf2 62.Kd1 Qg1) 55.Kf2 Rg4 56.Kf3 h5 (56...h5 57.Ke3 h4–+) 0–1. jeeves – genesis_so (1615), gameknot.com, 2019.

2.Bb2 d5

(--> 1.b4 d5 2.Bb2 h6).

3.Nf3 e6 4.a3 Nf6 5.e3 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 e6 5.a3 h6).

3.g3 e6 (--> 1.b4 d5 2.Bb2 e6 3.g3 h6).

2.Bb2 d6

3.e3 Nd7 4.Nf3 c6 (4...e5 5.Nc3=) 5.c4 Qc7 (5...e5 6.Nc3=) 6.a4 (6.d4 e5+=) 6...e5= 7.Be2 Ngf6 8.0-0 g5 (8...d5 9.cd5 Nd5 10.d4=) 9.h3 (9.d4 e4 10.Nfd2 d5+=) 9...Rg8 10.Nh2 h5 (10...d5 11.cd5 cd5 12.b5=) 11.Bh5 (11.d4 g4 12.hg4 hg4 13.Bg4 e4=) 11...Nh5= 12.Qh5 Nf6 13.Qe2 (13.Qf3 Be7=) 13...g4 14.h4 Be7 (14...Rh8 15.f4 Rh4 16.fe5=+) 15.g3 d5 (15...Rh8 16.a5=) 16.cd5 cd5 17.b5 Be6 18.Nc3 (better 18.Rc1 Qb8 19.a5=) 18...0-0-0?? (better 18...Rh8=) 19.Rfc1+– Kb8 20.Nd5! Qd7 (20...Rd5 21.Rc7 Discovered attack; 20...Bd5 21.Rc7 Discovered attack; 20...Nd5 21.Rc7 Discovered attack) 21.Ne7 (better 21.Be5 Bd6 22.Nf6+–) 21...Qe7 22.Be5 Ka8 23.d4 (23.b6 Ne8+–) 23...Nd5 (23...Nd7 24.Rc7 Rc8 25.Qc2 Ne5 26.Re7 Rc2 27.de5+–) 24.Rc5 (better 24.e4!? f6 25.ed5 Bd5+–) 24...f6 25.Bf4 Bf5 (25...Nf4 26.ef4 (26.gf4?! f5+–) 26...Rd4 27.Rac1+–) 26.Rac1 (26.Bc7! Rd7 27.b6 Qe6+–) 26...Nf4 27.gf4 Be4? (27...Qh7 28.Nf1 b6 29.R5c3 Qh4 30.Ng3+–) 28.Kf1 (28.Nf1 Kb8+–) 28...Qh7 (28...f5 29.f3 Bd5 30.fg4 Qh4+–) 29.Ng4?? (29.Qg4 Kb8 30.Qh3 Bg2 31.Qg2 Rg2 32.Kg2 Rg8 33.Kf3 b6+–) 29...Bd3 (better 29...Qh4 30.Ke1 b6 (30...Qg4?? 31.Qg4 Kb8 32.Qe6+–) 31.Nf6 Rg1 32.Kd2 bc5 33.Rg1 Qf6=+) 30.Nf6+– Be2 31.Ke2 Qf7 (31...Qh4!? 32.Ng8 Qg4 33.f3 Qg8 34.e4+–) 32.Ng8 Qg8 33.h5 (33.a5 b6 34.ab6 ab6+–) 33...Kb8 (33...b6 34.Rg5 Qa2 35.Kf1 Qa4 36.h6+–) 34.a5 Qa2 35.R1c2 (35.Kf3 Qa5 36.h6 Rh8+–) 35...Qa5+– 36.h6 (36.Kf3!?+–) 36...Qb6 (36...Rh8+=) 37.Rh5 (37.h7 Qh6 38.Rc7+–) 37...Qg6 (37...Rh8 38.Rc1 Rh6 39.Rhc5=+) 38.Rcc5 b6?? (better 38...Qg4 39.Kf1 Rd4 40.ed4 Qd1 41.Kg2 Qg4 42.Kh1 Qf3 43.Kg1 Qg4 44.Kh2 Qf4 45.Kg2 Qg4 46.Kh1 Qf3 47.Kg1 Qg4 48.Kf1 Qd1 49.Kg2 Qg4 50.Kh2 Qf4 51.Kh3 Qf3 52.Kh4 Qf4 53.Kh3 Qf3 54.Kh4 Qf4 55.Kh3=) 39.Rcg5+– Qc2 40.Kf3 Qd1? (better 40...Rh8+–) 41.Kg2 Rh8 42.h7 Qe2 (42...Qb3 43.Rg7 Qe6+–) 43.Rg8 Rg8 (43...Kc7 44.Rh6 Rh7 45.Rh7 Kd6+–) 44.hg8Q Kb7 (44...Kc7 45.Qf7 Kd8 46.Rh8) 1–0. Abdullaevich (1835) – TedSummers (1935), lichess.org, 2020.

3.e3 Nd7 4.Nf3 e5 5.d4 c6 (5...e4 6.Nfd2 d5 7.a3=) 6.c4 Qc7 (6...e4 7.Nfd2 d5 8.cd5 cd5 9.Nc3=) 7.Nbd2+= Ngf6 8.Bd3 a5 9.b5 Be7 10.a4 g5 (10...0-0 11.0-0+=) 11.Qc2 (11.0-0 g4 12.Ne1 ed4 13.ed4 d5+–) 11...Rg8 (11...cb5 12.ab5 Rg8 13.0-0+–) 12.de5 (12.0-0 cb5 13.cb5 Qc2 14.Bc2 g4+–) 12...de5+= 13.Bf5 (13.b6 Qd6+=) 13...Bb4 (13...g4 14.Nh4=) 14.Bc3 (14.bc6 bc6 15.0-0 g4+=) 14...g4= 15.Nh4 Nc5 (15...Bc3 16.Qc3 cb5 17.ab5=) 16.Bc8 Rc8 17.Bb4 ab4 18.Nf5 h5 (18...Qd7 19.0-0 Rg5 20.e4= (worse 20.Nh6 Rh5–/+)) 19.Nb3 (19.0-0 Rg5+=) 19...Nfe4 (better 19...cb5!? 20.ab5 Nb3 21.Qb3 Rg5=+) 20.Nc5 Nc5 21.Nh6 (better 21.b6 Qb8 22.Rd1+=) 21...Rg5=+ 22.Qh7 (better 22.0-0 b3 23.Qb1–/+) 22...Rd8?? (better 22...f6 23.Qc7 Rc7–/+) 23.0-0 Qe7 24.Nf5 (24.Rfd1 Rd1 25.Rd1 Qf6+= (25...Na4?? 26.Qh8 Qf8 27.Rd8 Kd8 28.Qf8 Kd7 29.Nf7+–)) 24...Qf8 (24...Qf6 25.Rad1+=) 25.Ng3 (25.Rad1 Qg8 26.Rd8 Kd8 27.Rd1 Nd7 28.Qg8 Rg8+–) 25...Qg7= 26.Qg7 Rg7 27.Nh5 Rg5 28.Ng3 f5 (better 28...b3+=) 29.Rfd1 (better 29.f4 gf3 30.Rf3+–) 29...Rd1=+ 30.Rd1 Na4 31.Rb1 c5 32.Ne2 Nb6 33.Rc1 Ke7 34.Kf1 (34.Rc2 Rg8 35.Ng3 Kf6–+) 34...Ke6 35.Kg1 Rg7 36.Rd1 (36.e4 f4–+ (36...fe4?! 37.Ng3–/+)) 36...Rd7 37.Rc1 (37.Rd7 Kd7 (37...Nd7?! 38.Nc1–+) 38.h4 gh3 39.gh3 Nc4–+) 37...Rd2 38.Kf1 Na4 (38...Nc4 39.Ke1 b3 40.e4 fe4 41.Rb1–+) 39.Ke1 (39.Ng3 b3 40.Ke1 Ra2–+) 39...Ra2 40.h3? (40.Ng3 Nb2 41.Kf1 Nd3–+) 40...Nb2 (better 40...b3 41.Kd1 Nb2 42.Kd2 Nc4 43.Ke1–+) 41.hg4?? (better 41.Kf1–+) 41...Nd3 42.Kd1 Nf2 43.Ke1 Nd3 44.Kd1 Nc1 45.Nc1 Rg2 46.gf5 (46.Nd3 b6 47.g5 Rg5–+) 46...Kf5 47.Ne2 (47.Nd3 b6 48.Kc1–+) 47...Ke4 48.Kd2 1–0. Dino_Jarach (1870) – TedSummers (1890), lichess.org, 2018.

3.e3 e5 (--> 1.b4 e5 2.Bb2 d6 3.e3 h6).

3.e3 f6 4.g3 g6 5.Bg2 Bg7 6.Ne2 Be6 7.a3 Nc6 8.d3 h5 9.Nd2 Nh6 10.d4 d5 11.Nf4 Bf7 12.Rc1 e5 13.de5 fe5 14.Ne2 Qd7 15.c4 d4 16.b5 de3 17.fe3 Ne7 18.0-0 0-0-0 19.Ne4 Qf5 20.Qa4 Kb8 21.Rf5 Nef5 22.Kf2 Ng4 23.Kf3 Nh2 24.Kf2 Ng4 25.Kg1 Nge3 26.Ng5 Rhf8 27.Nf7 Rf7 28.c5 Ng2 29.Kg2 Ne3 30.Kg1 Rdf8 31.b6 ab6 32.cb6 cb6 33.Qe4 Bh6 34.Be5 Ka8 35.Qa4 1–0. exp2005 – luizlima45, kurnik, 2012.

3.e4 e5 4.d4 Nf6 5.de5 White gets in control 5...Ne4 6.Qe2 (6.Bd3 d5 7.a3 Qg5=) 6...d5=+ 7.Nf3 (7.c3 Nc6=+) 7...Bg4 (better 7...Bb4!? 8.Nbd2 Nc6–/+) 8.h3 Bf3 9.gf3 Bb4 (better 9...Ng5!? 10.f4 Ne4= (worse 10...Bb4 11.c3+–)) 10.c3+– Nf2 11.Qf2 (worse 11.Kf2 Qh4 12.Ke3 Be7+=) 11...Ba5 12.Bd3 (12.Qg3 Nd7 13.Nd2 Qg5 14.Qg5 hg5+–) 12...d4 (better 12...Nd7 13.f4 Qe7+–) 13.0-0?? (13.Ke2 dc3 14.Nc3 Nc6+–) 13...c5?? (13...dc3 14.Rd1 Bb6 (14...cb2?! 15.Qb2 Bb6 16.Kh1–+) 15.Qb6 A) worse 15...cb6 16.Bb5 Nd7 17.Nc3 (17.Bd7?? Qd7 18.Nc3 Qh3–+) 17...Qg5 18.Kf2–+; B) 15...ab6 16.Nc3 Nc6–+) 14.cd4+– cd4 15.Bd4 Nc6 16.Bc5?? (better 16.Bb5+–) 16...Qd3–+ 17.Nd2?? (better 17.Kg2–+) 17...Bd2 18.Qg3 (18.f4 Rd8 19.Rad1 Qc3–+) 18...Bg5 (18...g5 19.Rad1 Qc3 20.Qf2–+) 19.Rad1 Qc4 20.Bd6 Rd8 (20...Nd4!? 21.Qg2–+) 21.f4 Rd6 (21...Nd4!? 22.Rd2 Nf5 23.Qd3 Qd3 24.Rd3–+) 22.Rd6 (22.ed6 Bf6 23.Qg2 0-0–+) 22...Nd4 23.fg5 (23.Rd4 Qd4 24.Kh2–+) 23...Ne2 24.Kh2 Ng3 25.Kg3 Qc3 (better 25...Qf1 26.gh6 gh6–+) 26.Rf3 (26.Kg2 hg5 27.Rf3 Qb2 28.Kf1 Qb1 29.Kf2 Qa2 30.Ke3–+) 26…Qe5 (26...Qe5 27.Kf2 Qd6–+) 0–1. aravind555 (1610) – Waldemar77 (1605), lichess.org, 2018.

3.f3 Nd7 4.e4 c6 5.d4 Qc7 6.c4 e5 7.d5 (7.Ne2 Ngf6=) 7...Ngf6 8.a3 Be7 9.Bd3 0-0 10.Ne2 a5 11.Nd2 (11.b5 Nc5=) 11...ab4 (11...Qb6 12.Qa4=+) 12.ab4= Ra1 13.Qa1 Qb6 14.Bc3 (14.Qa3 Nb8=) 14...Qe3=+ 15.Nf1?? (better 15.Qb1=+) 15...Qd3–+ 16.Qc1 (16.Nd2 Nb6 17.Qa7 Nfd7–+) 16...Qc4 17.Nfg3 (17.Ne3 Qb5 18.Ng3 Re8 19.dc6 bc6–+) 17...Nb6 (17...cd5 18.Nf5 Re8 19.Ne3–+) 18.0-0 (18.dc6 Qc6 19.0-0 Nc4–+) 18...Na4 (better 18...cd5 19.Qe3 Qb5 20.Bd2–+) 19.Nf5 (19.dc6 Nc3 20.Qc3 Qc3 21.Nc3 bc6 22.Na4–+) 19...Bf5 20.ef5 (20.Be5 Qc1 (20...de5?! 21.Qc4 cd5 22.Qb5–/+; 20...Qe2 21.Bf6 Bf6 22.ef5–+) 21.Rc1 de5 22.dc6 Be6 23.cb7 Rb8–+) 20...Nd5 21.f6 (21.Be5 Qc1 (21...de5?! 22.Qc4 Bb4 23.Ra1 Bc5 24.Kh1=; 21...Qe2 22.Bd4–+) 22.Nc1 de5–+) 21…Bf6 0–1. Dino_Jarach (1890) – TedSummers (1870), lichess.org, 2018.

3.Nf3 e5 (--> 1.b4 e5 2.Bb2 d6 3.Nf3 h6).

2.Bb2 f6

3.c4 e6 4.g4 (better 4.a3+=) 4...Bb4–/+ 5.g5 (5.Bg2 Ne7–/+) 5...Nc6 (5...hg5!? 6.Bg2 Ne7–+) 6.gf6–/+ Nf6 7.Nf3 b6 8.Ne5 (8.Rg1 0-0–/+) 8...Ne5 9.Be5 d6 (9...Ng4 10.Bg2 c6 11.Bd4–/+ (11.Bg7? Qh4 12.Bd4 Rf8–+)) 10.Bc3 (better 10.Qa4 Qd7 11.Qb4 de5 12.Bg2=+) 10...Ba6?? (better 10...Bc3 11.Nc3 Bb7–/+) 11.Bb4 (11.Qa4!? Qd7 12.Qa6 Bc3 13.Nc3 c6+–) 11...Bc4 12.d3 a5 13.Ba3 Bd5 14.Rg1 b5? Black prepares a4 (better 14...0-0!? 15.e4 Bb7+–) 15.Rg7 (15.e4 Bb7 16.Rg7 Kf8+–) 15...b4 (15...Nh5 16.Rg4 Qf6+–) 16.Qc2 (better 16.e4 ba3 17.ed5+–) 16...a4?? (better 16...ba3 17.e4 Bb7 18.Rc7 Rh7 19.Qa4 Kf8 20.Rh7 Nh7 21.Na3 Ng5+–) 17.Bb4+– Rb8 (17...c5 18.Bd2 Nd7+–) 18.Ba5 (worse 18.Qa4 Kf8 19.Rg1 Qe8 20.Qe8 Ke8+–) 18...Qc8 (18...Nd7 19.Qa4 Ra8 20.e4+–) 19.Rc7 (19.e4 Ra8 20.Rc7 Qa6+–) 19...Qa6 20.Rc8 (better 20.Qa4 Kf8 21.Nc3+–) 20...Rc8= 21.Qc8?? (better 21.Qa4 Nd7 22.Nd2=+) 21...Qc8–+ 22.Nd2 (22.Bd2 Ng4 23.Nc3 Nh2–+) 22...0-0 (better 22...Qc5 23.Rb1 Ba2–+) 23.Ne4 (23.Bb4 Qb8 24.a3 Ng4–+) 23...Qa6 (better 23...Ne4 24.de4 Qc5 25.f3 Qa5 26.Kf2 Qc5 27.e3 Qc2 28.Be2 Rf3 29.Kf3 Qe4 30.Kf2 Qh4 31.Kg1 Qg5 32.Kf2 Qf6 33.Kg3 Qa1 34.e4–+) 24.Bc3 (24.Nf6 Rf6 25.Bc3 e5–+) 24...Ne4 (24...Be4 25.f3 Bb7 26.Rb1–+) 25.de4 Be4 (better 25...Qc4 26.Rc1 Qe4 27.Bd2–+) 26.Bh3 (26.Rc1 Qb6 27.e3 Rc8–+) 26...Qb6 (26...Qc4 27.Rc1 Bd5 28.Bd2–+) 27.Be6 Kh7 28.f3 (28.e3 Qc5 29.Rc1 Qg5–+) 28...Bf3! 29.Bf5 (29.ef3 Qe3 Double attack (29...Qg1 Decoy)) 29...Kg8 (29...Rf5 30.Kd2 Rd5 31.Kc2 Be4 32.Kc1 a3 33.Bd4 Qd4 34.Rb1 Rc5) 30.ef3 (30.Be6 Rf7! 31.Kd2–+) 30...Rf5 (better 30...Qe3 31.Kd1 Qf3 32.Kd2 Qf2 33.Kd3 Qf5 34.Kd2 Qd5 35.Ke2 Qe4 36.Kd1 Qd3 37.Kc1 a3 38.Rb1 Rf1 39.Be1 Re1) 31.Rd1 (31.0-0-0–+) 31...Rf3 (31...Qe3 32.Kf1 Qf3 33.Ke1 Qe3) 32.Rd6 Qf2 (32...Qe3 33.Kd1 Rf1 34.Be1 Re1 35.Kc2 Rc1 36.Kb2 a3) 33.Kd1–+ Rh3 (33...Rc3 34.Rg6 Kf7 35.Rd6 Qg1 36.Ke2 Qe3 37.Kf1 Rc1 38.Rd1 Rd1 39.Kg2 Rg1) 34.Rg6 (34.Rg6 Kf7 35.Rf6 Qf6 36.Bf6 Kf6 37.Kc1–+). Agiant – acoffee, lichess.org, 2019.

3.e3 e5 4.Qh5 Ke7 5.Be5! fe5 6.Qe5 Kf7 7.Bc4 Kg6?? (7...d5 8.Bd5 (worse 8.Qd5 Qd5 9.Bd5 Ke8=+) 8...Kg6 9.Qg3 Qg5 10.Be4 Kf7 11.Qc7 Ne7 12.Nf3+– (12.Bb7?! Bb7 13.Qb7 Nbc6+=)) 8.Nh3 (8.Qe4 Kg5 9.Nf3 Kf6 10.Qf4 Kg6 11.Qf7 Kh7 12.Bd3) 8...Nf6?? (better 8...Kh7 9.Bd3 g6 10.Bg6 Kg6 11.Qh8 Nf6+–) 9.Nf4 Kh7 10.Qf5 g6 11.Qg6 1–0. kovacic (2340) – valla, ChessWorld.net, 2017.

3.e3 e5 4.Qh5 g6 (4...Ke7!?+/–) 5.Qg6+– Ke7 6.Nc3 d6? (better is 6...d5+/–) 7.Nd5+– Ke6 8.Bc4 Kd7 9.Qf5 (better is 9.Qf7 Ne7 10.Bd3+– (10.Qf6?! Nd5 11.Qh8 Nb4+–; worse is 10.Nf6 Kc6+–)) 9...Kc6 (9...Ke8 10.Qh5 Kd7 11.Qf7 Ne7+–) 10.b5 Kc5 11.Ba3 Kc4 12.Qd3# 1–0. pierred (2760) – mduerr (1700), net–chess.com, 2010.

3.e4 a6?? 4.Qh5 g6 5.Qg6# 1–0. Wall,Bill – Xavier Kyle, internet, 2003.

3.e4 e5 4.Qh5 g6?? (4...Ke7 5.Nc3 c6+–) 5.Qg6 Ke7 6.Bc4 Nc6 (6...Qe8 7.Qg3 a5 8.b5+–) 7.Qf7 Kd6 8.b5 Nce7 9.d4 h5 (9...ed4 10.Bd4 c6 11.Bf6 Rh7 12.e5 Kc7 13.Qh7 Nf6 14.ef6 Nd5 15.Bd5 Qf6+–) 10.de5 Kc5 11.a4 Nh6 (11...a5 12.ef6 Nh6 13.fe7 Nf7 14.ed8Q Nd8+–) 12.Ba3 Kb6 (12...Kd4 13.Nf3 Ke4 14.Bd3 Kf4 15.Qc4) 13.a5! Ka5 (13...Ka5 14.Bc5 Mate attack) 14.Bc5 1–0. DEFFM – GuestWDMT, freechess.org, 2019.

3.e4 g6 4.Nf3+– a6? (4...e5 5.Nc3+–) 5.Bc4 (better 5.Nh4 Rh7 6.Ng6+–) 5...e6 6.Nh4 Ne7 7.Bf6 Rg8 8.0-0 h5 (8...Nbc6+–) 9.e5 d5 10.Bd3 Qd7 11.Nc3 Nf5 12.Nf5 gf5 13.b5 (13.a3 Bg7+–) 13...Qh7 14.ba6 ba6 (14...Na6 15.h4+–) 15.Be2 Kd7 (15...Nc6 16.Bh5 Kd7 17.Qf3+–) 16.Rb1 Qg6 (16...Nc6 17.Bf3 (worse 17.Bh5 Ra7+–) 17...Rb8 18.Rb8 Nb8 19.Ne2+–) 17.Bf3 Be7 (17...Nc6 18.Nd5! ed5 19.c4+–) 18.Nd5! ed5 19.Bd5 Rf8 (19...c6 20.Bg8 Qg8 21.Qh5 Qe6+–) 20.Ba8 Nc6 (20...Bf6 21.ef6 Rf6 22.Rb8 Rb6 23.Rb6 cb6+–) 21.Bc6 Kc6 22.Qf3 Kd7 23.Qd5 Ke8 24.Rb8 Bf6 (24...Bd8 25.Rc8 Qg2 26.Kg2 Rg8 27.Kf3 Rg3 28.fg3 Kf8 29.Rd8) 25.Rc8 (25.Qe6 Be7 26.Rc8) 25...Ke7 1–0. DEFFM – GuestFNKF, freechess.org, 2018.

3.e4 h5 +/–.

3.g4 d6 (3...e5 4.a3=+) 4.Bg2 (4.e3 e5=) 4...Nc6 (4...e5 5.h3=) 5.a3 a6 6.h3 e5 7.e3 Nge7 8.d3 Rb8 9.Nd2 Be6 10.Ne2 Qd7 11.Ng3 f5 12.gf5 Nf5 13.Nf5 Bf5 14.Nb3 Be7 15.Qd2 (15.d4 Bf6=) 15...0-0 16.f4 (16.0-0-0 Bf6=) 16...ef4=+ 17.ef4 Bh4 18.Kd1 Rbe8 19.Kc1 Qe7 (19...Bg3 20.Bc6 Qc6 21.Rg1+=) 20.Qc3 (20.Bc6 bc6 21.Nd4 Bd7=+) 20...Be1 (20...Bd7!?=+) 21.Qc4= Be6 (better 21...Kh7=) 22.Bd5 (better 22.Re1!? Bc4 23.Re7 Re7 24.dc4 Rf4 25.Kd1+=) 22...Bd5 (22...Bf2 23.Kb1 Rf5 24.Be6 Qe6 25.Qc3–/+) 23.Qd5=+ Kh8 (23...Kh7 24.Qf3=+) 24.Kb1 (24.Qh5=) 24...a5 (24...Bf2 25.Qf3 Qe3 26.Qg2=+) 25.ba5 (25.Rg1 Rf7 26.b5 a4+–) 25...Ra8 (25...Qf7 26.Qb5=) 26.Ka2 (better 26.Rg1 Rf7 27.a6 Ra6 28.Rg6+–) 26...Na5?? (better 26...Bf2!?=) 27.Na5 (better 27.Rae1 Qf7 28.Re6+–) 27...Ba5+– 28.Rag1 c6?? (28...Qf7 29.Bg7 Kh7 30.Qf7 Rf7 31.Bb2+–) 29.Qd4 (29.Rg7 Qf6 30.Rg8 Kh7 31.Qe4 Kg8 32.Rg1 Kh8 33.Bf6 Rf6 34.Qe7 Rg6 35.Rg6 Bc3 36.Rh6 Kg8 37.Rg6 Kh8 38.Qh4) 29...Qe6 (29...Rf6!? 30.f5 d5+=) 30.Ka1 (30.Ka1 Rf6 31.Kb1+=) 1–0. adabriwala – Spacebona (1800), lichess.org, 2019.

2.Bb2 Nf6

3.a3 e6 4.e3 g6 (4...a5 5.b5=) 5.Nf3+= Bg7 6.d4 Nh5 (6...d5 7.Bd3+=) 7.c4 c5 (better is 7...d5!?+=) 8.bc5+– d6 9.cd6 Qd6 10.Nc3 Nc6 11.Bd3 Qe7 12.Qc2 Nf6 (12...0-0 13.0-0+–) 13.0-0 (13.d5 Nd8+–) 13...Bd7 (13...0-0 14.e4+–) 14.d5 Nd8 15.de6 Be6 16.Rfe1 (16.Nd5 Bd5 17.cd5 0-0+–) 16...Nc6 (16...0-0 17.e4+–) 17.Rad1 (17.Nd5 Qd8 18.Rad1 Rg8+–) 17...0-0 18.Nd4 Kh7 19.Nc6 bc6 20.Ne4 Ne4 21.Be4 f5? 22.Bg7+– Qg7 23.Bf3 Rad8 24.Rd8 Rd8 25.Rd1 Rd1+/– 26.Qd1 Bc4 27.Qc1 Bb5 28.Qc2?? a6 29.g3 Qf7?? 30.Kg2 Qf6? 31.Be2?? Kg7 32.Bb5 ab5 33.Qc5 Kf7 34.h3 Qe6 35.Qa7 Qe7 36.Qc5?? Qc5–+ 37.h4 Qd5 38.Kg1 b4! 39.ab4 0–1. Fournier,Frederic (1700) – Invitado3813, Active, 2006.

3.a3 e6 4.Nf3 c5 5.bc5 Bc5 6.e3 d5 7.c4 Nc6 8.Nc3 0-0 9.d4 Bd6 10.c5 Bc7 11.Be2 b6 12.cb6 Bb6 13.0-0 Rb8 14.Rb1 Qd6 15.Bd3 (15.h3=) 15...Bb7 16.Qe2 Qe7 17.Na4 Rfc8 18.Nb6 ab6 19.Rfc1 Ne4 20.Rc2 Na5 21.Rbc1 Rc2 22.Rc2 Bc6 23.Ne5 Ba4 24.Be4 de4 25.Rc1 f6 26.Ng6 Qf7 27.Qg4 Kh7 28.Nf4 Bd7 29.Qe2 b5 30.Rc7 Nc4 31.Qh5 Rf8 32.Bc1 Qh5 33.Nh5 Rf7 34.g4 Be8 35.Rf7 Bf7 36.Ng3 Bg6 37.Kg2 Kg8 38.h4 Kf7 39.h5 Bh7 40.Ne2 g5 41.hg6 Bg6 ½–½. stormytlc – marekt, ChessWorld.net, 2010.

3.c4 e5 4.a3 (4.Qa4 e4=) 4...d6 5.e3 Be7 6.Nf3 e4 7.Nd4 c5 8.bc5 (8.Nc2 0-0=) 8...dc5+= 9.Nb3 Bf5 10.Nc3 Nc6 11.Be2 0-0 12.0-0 Re8 13.f3 ef3 14.Bf3 Be6 15.Be2 Ne5 16.Nd5 Nd5 17.Be5 Nb6 18.d3 Bg5 19.Bf4 Qe7 20.Bg5 Qg5 21.Qc1 (21.Rf3!?=) 21...Bh3–/+ 22.Rf2 (22.Bf3 Re3 23.Re1 Re1 (worse is 23...Rd3 24.Qg5 hg5 25.Nc5 Rf3 26.gf3+=) 24.Qe1 Rd8+=) 22...Re3 23.Qf1 (23.Bf3 A) worse is 23...Rd3 24.Qg5 hg5 25.Nc5 Rf3 26.Rf3+/– (worse is 26.gf3 Nc4 27.Nb7 Rb8+=); B) 23...Rd8 24.Be4 Rd6–/+) 23...Rae8–+ 24.Re1 Bg4 25.Nc1 Na4 26.Kh1 Nc3 27.a4 Ne2 28.Ne2 Be2 29.Rfe2 Re2 30.Re2 Re2 31.Qe2 Qc1 (31...Qc1 32.Qe1 Qe1) 0–1. Fournier,Frederic – COMP Fritz 5.32, Active, 2001.

3.c4 e6 4.b5 Bd6 (4...d5 5.e3=) 5.e3 Qe7 6.Nc3 b6 (6...e5 7.Nf3=) 7.e4 (7.Qf3 c6=) 7...Bb7 8.e5 (better 8.Nf3!? e5 9.Qc2=) 8...Be5–/+ 9.Nf3 Bc3 10.Bc3 Bf3 (10...0-0!?–/+) 11.Qf3= 0-0?? (better 11...c6=) 12.Qa8+– 1–0. GuestMWTL – tincanman, freechess.org, 2017.

3.c4 g5 4.e3 Bg7 5.Nf3 0-0 6.Be2 d6 7.b5 Bf5 8.d3 Bg4 (8...a6 9.0-0=) 9.e4 (9.h4 gh4 10.Rh4 e5+=) 9...Be6 10.Qc2 Nbd7 (10...a6 11.Nc3=) 11.h3 Ne5 (better 11...c5!?+=) 12.Ne5+– de5 13.Be5 Nd7 (13...Nh5 14.Bg7 (14.Bh5?! Be5 15.Nc3 Qd4=) 14...Ng7 15.Nd2+–) 14.Bg7+– Kg7 15.0-0 (15.d4 Nb8 16.Qc3 Kg8+–) 15...Ne5 (better 15...Nc5+–) 16.d4 (16.Qc3 f6+–) 16...Ng6? (better 16...Qd4 17.Nd2 f5+=) 17.d5 Nf4? (better 17...Bc8+–) 18.de6 Ne2 (18...Ne6 19.Rd1 Nd4 20.Qd3+–) 19.Qe2 fe6 20.Nc3 (20.Rd1 Qe8+–) 20...b6 (20...Qd4 21.Rac1+–) 21.Rad1 Qc8 22.Qg4 (better 22.f4 gf4 23.Qg4 Kh7 24.Rf4 Rf4 25.Qf4 Qh8+–) 22...e5 (22...Rf4 23.Qg3+–) 23.Qg3 (23.Rd7!? c6 24.Qe6 Rf7 25.bc6 Qf8+–) 23...Qe6 24.h4 g4 25.f3 Rfd8 (25...c6 26.fg4 Rf1 27.Rf1+–) 26.fg4 (26.Rd8 Rd8 27.Nd5 Qd6+–) 26...Rd1 27.Rd1 Kf8 (27...c6 28.g5 h5 29.bc6+–) 28.Rf1 (28.g5 h5+–) 28...Kg7 (28...Ke8 29.Nd5 Qd6 30.g5+–) 29.Qf3 (29.Nd5 Rg8+–) 29...Qf6 (29...Qc4 30.g5 Qe6 31.Qh5+–) 30.Nd5 Qf3 31.Rf3 Rf8 (31...c6 32.bc6 Rc8 33.Ra3 Rc6 34.Ra7 Rc4 35.Re7 Kf8 36.Re5+–) 32.Ne7 Rf3 (32...Rd8 33.Nc6 Rd1 34.Kf2 Rd2 35.Ke3 Rg2 36.Ne5 Ra2 37.Rf7 Kg8 38.Rc7+–) 33.gf3 Kf8 34.Nd5 (better 34.Ng6 Ke8 35.Ne5+–) 34...c5 (34...Kf7+–) 35.bc6 Ke8 36.f4 Kd8 37.c7 Kc8 38.fe5 (38.f5 b5 39.f6 a6 40.f7 Kb7 41.f8Q bc4 42.c8Q Ka7 43.Qd7) 38...Kb7 (38...a5 39.e6 h5 40.e7 Kd7 41.c8Q Kc8 42.e8Q Kb7 43.Qd7 Ka6 44.Qc7 hg4 45.Qb6) 39.e6 Kc8 (39...a6 40.e7 b5 41.e8Q bc4 42.c8Q Ka7 43.Qcd7) 40.e7 Kd7 41.c8Q! Kc8 (41...Kc8 42.e8Q Mate attack) 42.e8Q Kb7 43.Qd7 Ka6 44.Qc8 (44.Nb4 Ka5 45.Qb5) 44...Ka5 45.Qb7 (45.Qb7 a6 46.Qb6 Ka4 47.Qa6) 1–0. GuestQJFT – GuestCLVV, freechess.org, 2017.

3.d4 e6 4.a3 d5 5.Nf3 a5 6.b5 c5 7.dc5 Bc5 8.e3 0-0 9.Bd3 Nbd7 10.0-0 b6 (10...Qc7 11.Qd2=) 11.Nbd2 Re8 12.Nb3 Bd6 13.a4 e5 14.Be2 Bb7 15.h3 Rc8 16.Rc1 Qe7 17.Nh2 Ba3 18.Ba3 Qa3 19.Ra1 Qb4 20.Ng4 Ne4 21.Nc1 (better is 21.Bd3!? Ndc5 22.Nc5 Nc5 23.Bf5+=) 21...Nc3–+ 22.Qe1? (better is 22.Qd2–+) 22...Qb2 (22...Ne2?! 23.Qe2 Qc3 24.Ra2–+) 23.Nd3 (23.Nb3 f5 (worse is 23...Qc2 24.Bd1 Qg6 25.Bf3–+; worse is 23...Ne2 24.Qe2 Rc2 25.Nh6 Kf8 26.Qg4–+) 24.Ne5 Ne2 25.Qe2 Rc2–+) 23...Qc2 (23...Ne2?! 24.Qe2 Qc2 25.Nh6 Kf8 26.Qc2 Rc2 27.Nf5=) 24.Bd1 Qd3 0–1. patrikstorm (2500) – pierred (2760), net–chess.com, 2010.

3.e3 a5 4.b5 c6 (4...d6 5.Bf6 ef6 6.Qh5=) 5.a4 cb5 6.ab5 b6 7.c4 Bb7 8.Nf3 d6 9.Be2 Nbd7 10.0-0 e5 11.h3 Be7 12.Nc3 0-0 13.d4 e4 (13...Qc7 14.Nh4=) 14.Nd2+– d5 15.cd5 Nd5 16.Nce4 N7f6 17.Nf6 Bf6 18.Bf3 Rb8 19.Ne4 (19.Qb3 Re8+–) 19...Be7 20.Qb3 Nb4 21.Rfc1 Bd5 22.Qc3 (22.Qd1!?+–) 22...Re8 23.Qc7?? (23.Qd2 Bf8 24.Nc3 Bf3 25.gf3 Qf6+=) 23...Bf8?? (better 23...Qc7 24.Rc7 Bd8–+) 24.Qd8+= Rbd8 25.Rc7?? (better 25.Nc3 Bf3 26.gf3=) 25...Be4–+ (25...Re4?! 26.Be4 Be4 27.f3–+) 26.Be4 Re4 27.Rb7 Nd5 28.Rc1 (28.Kf1 Re7 29.Re7 Be7–+) 28...Re7 29.Re7 Be7 30.Rc6 f5 31.Kf1 (31.g4 fg4 32.hg4 Bh4–+) 31...Rd7 (31...Bb4 32.g4 fg4 33.hg4–+) 32.Ke2 Rc7 (32...a4 33.g4–+) 33.Kd3?? (better 33.g4 fg4 34.hg4–+) 33…Nb4 (33...Nb4 34.Kd2 Nc6 35.bc6 Rc6–+) 0–1. RichardSommer (2120) – Elcordobes1980 (2020), lichess.org, 2020.

3.e3 b5 4.Bb5+– a6 5.Be2 c6 (5...Nc6 6.a3+–) 6.d3 (6.Nf3 d6+–) 6...d5 7.Bf6 (7.a3 a5+–) 7...gf6 8.Nd2 e6 9.Ngf3 (9.c3 Rg8 10.g3 a5+–) 9...f5 (9...Bb4!? 10.c4 Rg8=) 10.0-0 (10.c3 a5 11.ba5 Qa5+–) 10...h5 (10...Bb4 11.c4+=) 11.Ne5 (11.Rb1 a5 12.b5 cb5 13.Rb5 Bb4+–) 11...Bh6 (better 11...Bb4!? 12.d4 Bd6+–) 12.d4 Bg7 13.Ndf3 (13.Bh5 Be5 14.de5 Qh4–/+) 13...a5 14.Bd3 (better 14.b5+–) 14...ab4+= 15.Ng5?? (better 15.Qd2 c5 16.c3=) 15...Qg5–+ 16.f4 Qg4 (16...Qe7 17.Qd2–+) 17.Rf3?? (better 17.Ng4 hg4 18.Qd2+–) 17...Qh4 (17...Be5 18.fe5 Rg8 19.Qe2–+) 18.Rh3 (18.c3 bc3 19.Qb3 Be5 20.fe5 Rg8–+) 18...Qd8 (18...Qe7 19.Rh5 Rh5 20.Qh5–+) 19.Rh5 Rh5 20.Qh5 Ba6?? (better 20...Qe7–+) 21.Qf7 1–0. alt20 – santi7u7, lichess.org, 2016.

3.e3 d5 4.Nf3=.

3.e3 d6 4.d4 Nbd7 5.c4 a6 (5...e5 6.a3=) 6.a3 e5 7.de5 de5 8.Nf3 e4 9.Nfd2 Be7 (9...a5!? 10.Qa4 Qe7=) 10.Nc3+/– 0-0 11.Nce4 Ne4 12.Ne4 Nf6 (12...c5!?+/–) 13.Nf6 Bf6 14.Bf6 (14.Qd8!? Bd8 15.Bd3+–) 14...Qf6+/– 15.Be2 Bf5 16.0-0 Rad8 17.Qb3 Rd2 18.Bf3 (18.Ra2 Rfd8+=) 18...Bc2 19.Qa2 Rfd8 20.Bd5 c6 21.Rac1 (21…Qg6 22.Bf3=) 1–0. b4_player (1955) – Timbang_kati, GameColony.com, 2002.

3.e3 e5 4.a3 d5 (4...d6!?=) 5.Be5+= Nc6 (5...Nbd7 6.Bd4+=) 6.Bf6 (6.Bb5 Bd7 7.Bf6 Qf6+–) 6...Qf6+= 7.d4 Bd6 (7...Bf5 8.Nf3+=) 8.Nf3 (8.Nc3 Be6+–) 8...Bg4 (8...Be6 9.Bd3+=) 9.c4 Ne7? (better 9...dc4 10.Bc4 0-0+–) 10.c5+– Bf3 11.Qf3 Nf5 (11...Qf3 12.gf3 Bf4 13.ef4+–) 12.Nc3 (better 12.cd6 c6 13.Bd3 Nd6 14.Qf6 gf6 15.Nc3+–) 12...Be7 (12...c6 13.cd6 Qe6 14.d7 Kd8+–) 13.Nd5 Qc6 (13...Qg6 14.Nc7 Kd8 15.Na8+–) 14.Bb5! (14.Bb5 0-0 15.Bc6 bc6 16.Nc3+–) 1–0. Pereira – Paliester, internet, 2021.

3.e3 e5 4.a3 d6 5.Nf3=.

3.e3 e5 4.Be5 d6 (4...Bb4!? 5.Nf3 Nc6=) 5.Bc3+– Be6 6.b5 Be7 7.Ne2 0-0 8.Nf4 Qd7 9.Ne6 Qe6 (9...fe6 10.Be2+=) 10.Be2 (10.Qf3 d5+–) 10...c5 11.Bf3 d5 12.0-0 Nbd7 13.Bb2 Rad8 14.c4 dc4 15.Bb7 Nb6 (15...Qb6 16.Bc6 Nb8 17.Bf3+–) 16.Nc3 Rd7 17.Bc6 Rd6 18.a4 (18.Qc2!?+–) 18...Rfd8+– 19.Bc1 (19.Qc1+–) 19...Rc6 (better 19...Nbd5!? 20.Qf3 Nb4+=) 20.bc6+– Qc6 21.Qf3 (21.Bb2 Qd7+–) 21...Qc7 (21...Qf3 22.gf3 Nbd7 23.f4+–) 22.Nb5 (22.Rd1 Bd6 23.Qh3 a6+–) 22...Qb8 (22...Qe5 23.Rb1 Na4 24.Na7+–) 23.Bb2 (23.a5 Nbd7 24.Rb1 Ne5+–) 23...a6 24.Na3 Rd2 (24...Na4 25.Bf6 Bf6 26.Rab1+– (worse 26.Nc4 Ba1 27.Ra1 Qb3=)) 25.Bc3 (better 25.Rab1!? Qd8 26.Bf6 Bf6 27.Rb6 Qb6 28.Nc4+–) 25...Rd3+– 26.Rac1 (26.Ba5!?+–) 26...Na4 (26...Nfd5 27.a5 Nc3 28.ab6 Qb6 29.Nc4+–) 27.Bf6+= Bf6 28.Nc4 Qd8 (28...Nc3 29.Qg4+=) 29.Rfd1 (29.Qc6 Nc3 30.Kh1 Qe7+–) 29...Rd1 (29...Nc3!? 30.Re1 Qd5 31.Qd5 Rd5+=) 30.Rd1 Qe7 (30...Qb8 31.g3+–) 31.Qa8 (31.Rd6 a5 32.Ra6 Qd7+–) 31...Kh7 32.Qa6 Nc3 33.Rb1?? (better 33.Rd2+–) 33…Nb1–+ (33...Nb1 34.Qc6 Nc3–+) 0–1. aravind555 (1780) – Fiorella1 (1760), lichess.org, 2020.

3.e3 g5 4.c4 Bg7 5.Be2 d6 6.d4 0-0 7.Nc3 Nc6 8.Nf3 (better is 8.b5!? Na5 9.Nf3+=) 8...Nb4+= 9.a3 Nc6 10.d5 Nb8 11.0-0 c6 12.Nd4 cd5 13.cd5 Nbd7 (13...e5 14.de6 fe6 15.Rc1=) 14.Nf5 Ne5 15.Ng7 Kg7 16.Nb5 (16.Qd4 Bg4+=) 16...Bf5 17.Rc1 Kh7 (17...a6 18.f4 gf4 19.ef4=) 18.Qd2 (18.f3 Rc8+=) 18...a6= 19.Nc7 Rc8 20.f4 (better is 20.Be5 de5 21.Qb2 Nd5 22.Qe5+=) 20...Neg4?? (20...gf4 21.ef4 Ned7+= (worse is 21...Rc7 22.fe5 Ne4 23.Qf4+=)) 21.Bg4 (21.fg5 hg5 22.Rf5+–) 21...Bg4+= 22.fg5 Rc7 23.gf6+/– ef6?? 24.Rf6 Rc1 25.Qc1 Qe7 26.Qb1 (26.Qb1 Qe4 27.Qe4 Bf5 28.Qf5 Kg8 29.Rg6 fg6 30.Qg6; 26.Qc2 Qe4 27.Qe4 Bf5 28.Qf5 Kg8 29.Rg6 fg6 30.Qg6) 1–0. Wall,Bill – Corwinofamber, chess.com, 2009.

3.e3 g5 4.Nf3 Bg7 5.Be2 Nd5?? (better is 5...d6=) 6.Bg7+– Nb4 (6...Rg8 7.Bb2 Nb4+–) 7.Bh8 Nd5 8.c4 Nb4 9.a3 N4c6 10.d4 d5 11.cd5 Qd5 12.Nc3 Qa5 13.d5 Nb4 14.ab4 Qb4 15.Ra4 Qc3 16.Bc3 Bd7 17.Rb4 a5 18.Rb7 a4 19.Qb1 a3 20.Rb8 Rb8 21.Qb8 Bc8 22.Qc8# 1–0. Trkn – nomah316, ICC, 2004.

3.e3 g6 4.Nf3 Bg7 5.c4 b6 (5...0-0 6.d4=) 6.Be2 Bb7 7.d4 Be4 (7...c5 8.bc5 bc5 9.Nc3+=) 8.d5 (8.Nc3 Bb7+=) 8...d6 (8...a5 9.ba5 Ra5 10.Nbd2 Bf3 11.Bf3+=) 9.Nbd2+/– 0-0 10.Ne4 Ne4 11.Nd4 c5 (11...e5!? 12.de6 Qf6 13.ef7 Qf7+/–) 12.dc6+– Qc7 13.b5 a6 14.0-0 ab5 15.cb5 e5 (15...d5 16.a3+–) 16.Nb3 d5? (better is 16...Nc5+–) 17.Qd5 (17.Qd5 Ra4 18.Rfd1+–) 1–0. Fournier,Frederic (2215) – NN, Active, 2004.

3.e3 Rh7 4.c4 Ng8? (4...a6!?+= 5.a3 (5.Nf3 g6 6.d4 d5 7.Be2 Nc6 8.a3 dc4 9.Bc4 b5 10.Bb3 Bg7+/–) 5...d5 6.Bf6 gf6 7.Qc2 f5 8.cd5 e6 9.de6 fe6 10.d4 Bd6+/–; 4...e5 5.a3 Nc6 6.b5 Ne7 7.Be5 Ng6 8.Bd4 d6 9.Nf3 Be6 10.Be2 d5+/–) 5.d4 (5.Nf3 Nf6+–) 5...a5 (5...Nf6 6.Nc3+/–) 6.Bd3+– Rh8 (6...g6 7.b5+–) 7.b5 d5 (7...Nf6 8.Nc3+–) 8.Nf3 e6 (8...dc4 9.Bc4 Nd7 10.Nc3+–) 9.0-0 (9.Nbd2 Nf6+–) 9...c6 (9...dc4 10.Bc4 Nf6 11.Nbd2+–) 10.cd5 cd5 11.Nc3 Be7 12.Rc1 Bf8? 13.Re1 Bd7? 14.Ne5 g5 15.Nf7 Kf7 16.Qh5 Ke7 17.Ba3 Kf6 18.Qg6 1–0. Bonetti,Shane – Jockel (1690), ICC, 2002.

3.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 h6).

3.Bf6 ef6 4.c4 d6 (4...Bb4!? 5.e3 0-0–/+) 5.Qa4 (5.d4 d5 6.c5 b6=) 5...Qd7 (5...Bd7 6.Qb3=) 6.b5 b6 7.Nc3 f5 8.g3 Bb7 9.Nf3 Qe6 (9...a6 10.Bg2=) 10.Nd4 (10.Bg2 g6+–) 10...Qe5 (10...Qf6 11.Nc6=) 11.Nc6+= Bc6 12.bc6 Qc5 (12...a5 13.e3+–) 13.Nd5 (13.Nd5 Kd8 14.Bg2+–; 13.Bg2!?+–) 1–0. MARYMARY – bombidil22 (1680), ChessWorld.net, 2017.

3.g3 g6 4.Bg2 Bg7 5.Nf3 0-0 6.d3 d5 7.Nbd2 Nc6 8.b5 Nb8 9.0-0 Bd7 10.a4 c6 11.c4 dc4 12.dc4 cb5 13.cb5 a6 14.Qc2 (14.Qb3!?=) 14...ab5=+ 15.ab5 Ra1 (15...Bb5?? 16.Ra8 Be2 17.Re1 Bf3 18.Nf3+–) 16.Ra1 Bb5 17.Ra8 (17.Nd4 Bc6=+) 17...Be2–/+ 18.Qb3 (18.Be5 Nfd7 19.Bg7 Kg7 20.Qb2 Nf6–/+) 18...Ba6 (18...Bf3 19.Nf3 Qd5 20.Ra3–/+) 19.Bf6 (19.Be5!? Nfd7 20.Bg7 Kg7 21.Qb2 Nf6 22.Ne5–/+) 19...Bf6–+ 20.Ne4 Qd1?? (better 20...Bg7–+) 21.Qd1+– 1–0. JUANKARODA (1795) – Tocar (1780), lichess.org, 2020.

3.e3 e6

4.a3 d5=.

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 d5 8.f4 (8.Nf3 Nbd7 9.Nc3 Bd6 10.Bb2 Nc5 11.Be2 0-0 12.0-0) 8...c5 (8...Bb4 9.Nf3 0-0 10.Be2 Nbd7 11.0-0 Qe7 12.Nc3) 9.Nf3 Nbd7 10.Be2 Bd6 11.0-0 0-0 12.c4 b6 13.Nc3 Bb7 14.cd5 ed5 15.d4 (15.Bb2!?+=) 15...Ng4–/+ 16.Qd2 Qe8 17.Nd1 Ngf6 18.Nf2 Qe6 19.Ne5 Ra8 20.Bc3 Ra3 21.Ra1 Ra1 22.Ba1 c4 23.Bf3 Bc8 24.Qc2 ½–½. ST_KAOURAS – marekt, ChessWorld.net, 2010.

4.b5 a6 5.Nf3 d5 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.d4 0-0 10.Bd3 c6 11.0-0 cb5 12.Nbd2 Qc7 (12...b4 13.Qe2+=) 13.Bb2 (13.Bb5 Bd7 14.Bd3 b5=) 13...Nc6 14.Qe2 Nb4 15.Ba3 Bd7 16.e4 Nd3 (16...de4 17.Ne4 Ne4 18.Bb4+=) 17.Bd6= Qd6 18.e5 (worse is 18.Qd3 de4 19.Ne4 Ne4 20.Qe4 Bc6–/+) 18...Nf4 19.Qe3 (19.ed6?? Ne2 20.Kh1 Ra8–+) 19...Qc7 20.Qf4 Ra8 21.Qe3 Nh7 22.Qb3 Nf8 0–1. smurfchess (2135) – pierred (2760), net–chess.com, 2010.

4.b5 a6 5.Nf3 d5 6.Ne5 ab5 7.Bb5 c6 8.Bd3 Nbd7 9.0-0 Ne5 10.Be5 Bd6 11.f4 Be5 12.fe5 Nd7 13.Qh5 0-0 14.Be2 Qb6 15.a4 Ra5 16.Qh4 (16.Ra3!?+=) 16...Ne5–/+ 17.Nc3 Qc5 18.Rab1 f6 (18...Ng6 19.Qf2–/+) 19.Qb4 (19.Rb3 Nf7+=) 19...Qb4–/+ 20.Rb4 Nf7 21.Bd3 e5 22.g4 e4 23.Be2 Nd6 24.Kg2 f5 25.gf5 Rf5 26.Rf5 Bf5 27.Rb1 Kf7 28.h4 g6 29.Kg3 Kf6 30.Kf2 Ke5 31.Rg1 c5 Black plans d4 32.d3 Ra8 33.Rd1 d4 34.ed4 cd4 35.Ne4 Ne4 (35...Ne4 36.de4 Be4–+) 0–1. pierred (2760) – acidtest, net–chess.com, 2010.

4.b5 b6 5.Nc3 Bb7 6.Nf3 Be7 7.Bd3 d5 8.0-0 Nbd7 (8...a6 9.ba6 Na6 10.Bb5 c6 11.Be2=) 9.Qe2 (9.a4 e5 10.Bf5 a6=) 9...0-0 10.a4 (10.Rfb1 e5 11.Bf5 c5=) 10...Nc5 (10...e5 11.Bf5=) 11.a5 a6 (better is 11...ba5!? 12.Ra5 c6=) 12.ba6+/– Ba6 13.Ba6 Na6 14.ab6 Nb4 (14...Qc8 15.bc7 Nc7 16.Ne5+/–) 15.Ra8+– Qa8 16.bc7 Nc2 (16...Rc8!?+/–) 17.Rc1+– Nb4 18.Nb5 (18.Na4 Na2 19.Rc2 Qb7+–) 18...Rc8 19.Ra1 (19.Bf6 Bf6 20.Nd6 Na2+–) 19...Qb7 20.Ra7 (20.Ne5 Nc2 21.Rc1 Rc7 22.Nc7 Qb2+–) 20...Qb6+/– 21.Bd4 Bc5 22.Bc5 Qc5 23.Ra4 Ne8 24.d4 Qc1? 25.Qe1+– Qe1 26.Ne1 Nc6 27.Ra6 Nb4? 28.Rb6 Nc7 29.Nc7 Rc7 30.Rb4 Rc1 31.Kf1 Kf8 32.Rb8 Ke7 33.Rb7 Kf6 34.Ke2 Ra1 35.Nd3 Kg6 36.Ne5 Kg5 37.Rf7 g6 38.Nf3 Kh5 39.h3 g5 40.g4 Kg6 41.Ne5# 1–0. marre – Menschi86, internet, 2010.

4.b5 c6 5.Nf3 Bd6 6.c4 a6 7.bc6 dc6= 8.d4 b6 9.Nbd2 Bb4 10.Bd3+= 0-0 11.0-0 Qc7 12.a3 Bd2 13.Qd2+/– Nbd7 14.e4 Ng4 15.e5 c5 16.h3 Bb7 17.hg4 Bf3 18.gf3 cd4 19.f4 g6 20.Bd4 Nc5 21.Bc2 Rad8 22.Qe3 Rd7 23.Rfd1 Rfd8 24.f5 g5 25.f6 Rc8 26.Qh3 (26...Rf8 27.Qh6 Rd4 28.Qg7#) 1–0. Zimmermann,Joerg – Munkwitz,Wolfgang, TSC–CC–05.07, 2003.

4.b5 d5 5.Nf3=.

4.d4 Bb4–/+ 5.Bc3 c5 6.Bc4 Qa5 7.Bb4 Qb4 8.c3?? (better is 8.Nd2–/+ cd4 9.ed4 d5 10.Rb1 Qa5 11.Bb5 Nc6 12.Qc1) 8...Qc4–+ 9.Nf3 0-0 10.Nbd2 (10.Qe2 Qe2 11.Ke2 b6–+) 10...Qc3 11.Rc1 Qa3 12.Rc2 (12.dc5 Na6–+) 12...b6 13.Nc4 (13.dc5 bc5 14.Nc4 Qb4 15.Nfd2 Qb7–+) 13...Qb4 14.Kf1 (14.Ncd2–+) 14...Ba6 15.Kg1 Bc4 16.h4 (16.Qd2 Qb1 17.Rc1 Qa2 18.dc5 Rc8–+) 16...Nc6 17.dc5 (17.Qc1 d5–+) 17...bc5 18.g4 (18.h5 d5 19.Qc1 Rab8–+) 18...Bd5 19.Kg2 Qg4 20.Kf1 Bf3 21.Qd6 Qg2 22.Ke1 Qh1 23.Kd2 Ne4 24.Kd3 Qf1 25.Re2 Qe2# 0–1. funnyman9 – marekt, internet, 2010.

3.Nf3 e6

4.a3 a5 5.b5 d5 6.e3 Bd6 7.a4 0-0 8.Be2 Qe7 9.0-0 e5 10.c4 (10.Ba3 e4 11.Nd4 c5 12.bc6 Nc6 13.Bd6 Qd6=) 10...e4+= 11.Ne1 dc4 12.Bc4 (12.f3 Nd5+=) 12...Nbd7 (better is 12...Bh2!? 13.Kh2 Ng4 14.Kg3 Qd6 15.f4 Ne3–/+) 13.d4 Nb6 14.Be2 Nfd5 15.Nc2 Qg5 16.g3 (16.Ba3 Be6+=) 16...Bh3–/+ 17.Re1 Rfe8 18.Nd2 Re7 19.Nc4 Re6 20.Nd6 Rd6 21.Na3 (21.Qd2!?+=) 21...Rf6 (21...Ne3 22.Qd2 Na4 23.fe3 Nb2 24.Reb1–/+) 22.Bf1 Qf5 23.Qd2 Bf1 24.Rf1 h5 25.Qd1 h4! 26.Rc1? h3 27.Rc5 Rd8 28.Bc1? Na4 29.Rc4 Nac3 (29...Nac3 30.f4 Nd1 31.Rd1 c6 32.bc6 Qg4–+) 0–1. Larryldy – pierre, internet, 2010.

4.a3 c5 5.b5 d5 6.c4 Nbd7 7.Qb3 d4 8.d3 a6 9.e3 Qa5 10.Nbd2 e5 11.Be2 Bd6 12.0-0 ab5 13.Rfe1 bc4 14.Nc4 Qc7 15.Nh4 g6 16.Nd6 Qd6 17.Bf3 Nh7 18.ed4 cd4 19.Qd5 Qd5 20.Bd5 Kf8 21.Rac1 Kg7 22.Bc4 Ra5 23.f4 Nhf6 24.Nf3 ef4 25.Re7 Rf8 26.Nd4 Nb6 27.Ne6 Be6 28.Be6 Rb5 29.Bc3 Nbd5 30.Bd5 Rd5 31.Rb7 Rd3 32.a4 Rfd8 33.Be5 R8d5 34.Rb5 Rb5 35.ab5 Rd5 36.Bf6 Kf6 37.Rb1 Rd7 38.b6 Rb7 39.Kf2 Ke5 40.Kf3 f5 41.h4 g5 42.Rb5 Ke6 43.Rb4 Ke7 44.Rb5 Kf6 45.Rb3 Kg7 46.Rb1 Rb8 47.b7 Kf6 48.Rb6 Ke5 49.h5 Kd5 50.Ke2 Kd4 51.Kf1 Ke4 52.Kg1 f3 53.g3 g4 54.Rb5 Ke3 55.Kf1 Kd4 56.Ke1 Kc4 57.Rb6 Kc5 58.Rh6 Rb7 59.Rf6 Kd4 60.Rf5 Rb1 61.Kf2 Rb2 62.Kf1 Rh2 63.Rg5 Ke4 64.Rc5 Rg2 65.Rg5 Rg3 66.h6 Rh3 67.Rg4 Ke3 68.Kg1 f2 69.Kg2 Rh6 70.Rg8 Rh2 71.Kh2 f1Q 72.Re8 Kd4 73.Rd8 Kc4 74.Kg3 Qf5 75.Rg8 Kd3 76.Rg4 Qe5 77.Kh3 Ke3 78.Ra4 Qe6 79.Kh4 Qe7 80.Kg3 Qd6 81.Kh4 Kf3 82.Kg5 0–1. COMP – COMP, blitz, 2002.

4.c3 a5 5.b5 (5.Qa4 A) 5...b6 6.e3 (6.b5 Bb7 7.d3 d5 8.e3 c6 9.Na3 Bd6 10.Be2= 0.00; 6.d3 Na6 7.b5 Nc5 8.Qc2 d5 9.c4 Bd6 10.e3= –0.03) 6...Na6 7.b5 Nc5 8.Qc2 Bb7 9.d4 Nce4 10.Bd3= 0.13; B) 5...Be7 6.e3 0-0 7.Be2 d5 8.0-0 Nbd7 9.b5 e5 10.d3= 0.00; C) 5...b5 6.Qb5 ab4 7.cb4 Nc6 8.a3 Ba6 9.Qa4 Be2 10.Qb3= –0.19) 5...d5 6.d3 (6.e3 Bd6 7.d4 0-0 8.Ba3 Ba3 9.Na3 Qd6 10.Nc2= –0.06; 6.c4 dc4 7.e3 Nbd7 8.Bc4 Nb6 9.Be2 Bd6 10.0-0= 0.25) 6...c6 7.a4 (7.c4 dc4 8.dc4 Qd1 9.Kd1 Be7 10.Ke1= –0.12) 7...Qb6 (7...Bd6 8.e3+= 0-0 9.Be2 e5 10.c4+= –0.28) 8.Ba3 (8.c4!?= Bb4 9.Nbd2 Nbd7 10.e3= 0.00) 8...cb5+= 9.Bf8 (9.ab5 Qb5 10.e3+= –0.66) 9...Kf8 (9...Rf8 10.Qb3+=) 10.Qb3+= b4 11.d4 Qd6 12.cb4 (12.e3 Kg8+=) 12...ab4 (12...Qb4 13.Nbd2+=) 13.Ne5 (13.e3 Nc6=) 13...Nc6+= 14.Nc6 (14.Nf3 Na5 15.Qd1 Nc4–/+) 14...bc6–/+ (worse is 14...Qc6 15.Qb4 Kg8 16.Nc3+=) 15.e3 Nd7 (15...c5 16.dc5 Qc5 17.Qd1–/+) 16.Bd3 (16.Nd2 e5–/+) 16...c5 17.dc5 (17.Nd2 cd4 18.ed4 Nc5–/+) 17...Nc5–+ (17...Qc5?! 18.0-0+=) 18.Qd1 (18.Qc2 Bd7 19.0-0 Ba4–+) 18...Ba6 19.Be2 Be2 20.Ke2 Ke7 21.Nd2 (21.Kf1 Qa6 22.Kg1 Na4–+) 21...Rhb8 22.Qb1 (22.Kf3 Qe5–+) 22...Na4 23.Kf3 b3! 24.Nb3 d4! 25.ed4 Qd5 (25...Qd5 26.Kg3 Nc3–+) 0–1. ucme222 – pierre, internet, 2010.

4.c3 d5 5.e3 Bd6 6.Na3 a5 7.ba5 c6 8.c4 0-0 9.Nc2 Ra5 10.d3 +=.

4.c3 d5 5.e3 Bd6 6.Be2 0-0 7.d4 Nbd7 8.0-0 Qe7 9.Na3 c6 10.Nc2=.

4.Nc3 Bb4+= 5.e3 Nc6 6.a3 Ba5 7.Bc4 d5 8.Ba2 (8.Bb5 Bd7–/+) 8...e5 9.0-0 e4 10.Ne1 d4 11.ed4 Qd4 12.Kh1 0-0 13.f3 Rd8 14.Rb1 Qd2 15.Qd2 Rd2 16.fe4 (16.Ne4 Ne4 17.fe4 Be6 18.Be6 fe6–+) 16...Be6–+ 17.Be6 fe6 18.Bc1 (18.Rf3 Rad8–+) 18...Rd7 19.Bb2 Bc3 20.Bc3 Ne4 21.Ba1 Nd2 22.Nf3 (22.Rd1–+) 22...Nb1 23.Rb1 Rad8 24.Bc3 (24.Rg1–+) 24...Rd1 25.Rd1 Rd1 26.Ng1 e5 27.h3 (27.Bb2 Rd2–+) 27...Rc1 28.Kh2 Rc2 29.Be1 Ra2 30.Nf3 Ra3 31.Nd2 (31.Bg3 a5–+) 31...b5 32.Ne4 Re3 0–1. workchess (2265) – pierred (2760), net–chess.com, 2010.

4.e3 Bb4–/+ 5.a3 (5.Be2 d5–/+) 5...Ba5 (5...Be7 6.d4–/+) 6.Be2+= d6 7.0-0 Nc6 (7...e5 8.d4 e4 9.Nfd2+=) 8.c4 (8.d4 0-0+=) 8...e5 (8...0-0 9.d4+=) 9.Nc3 (9.d4 e4 10.Nfd2 0-0+=) 9...Bf5 (9...0-0 10.d4–/+) 10.d3 (10.d4 0-0–/+) 10...0-0 11.Nh4 (11.Rb1 Re8–/+) 11...Bd7 12.Rb1 e4! 13.g3 (13.Ne4 Ne4 Combination; 13.de4 Bc3 Decoy) 13...ed3 14.Bd3 Ne5 15.Ne4 (15.Nd5 Nd5 16.cd5 Bh3–/+) 15...Ne4 16.Be4 Nc4 17.Bc1 (17.Qd3 Be6 18.Bb7 Rb8–/+) 17...Bh3 18.Ng2 c6 (better is 18...Rb8 19.Rb7 Rb7 20.Bb7 Qf6–/+) 19.Qb3? (better is 19.Rb7!? Qc8 20.Rb3–/+) 19...d5–+ 20.Bd3 Ne5 21.Be2 Bf5 22.Rb2 Nc4! 23.Ra2 Qb6 24.Bc4 dc4 25.Qa4 Bd3 26.Rb2 Qc7 27.Bd2 c3 28.Bc3 Bc3 29.Qb3 Bb2 30.Qd3 Rfd8 31.Qb3 Qb6 32.Qc4 Ba3 33.Nf4 Rd2 34.Nh5 Qb4 35.Qb4 Bb4 36.Rb1 a5 37.Kg2 c5 38.Kf3 a4 39.Nf4 a3 0–1. petrobbo – marekt, internet, 2010.

2.Bb2 g6??

3.Bh8 f6 4.e3 e6 5.Bd3 Kf7+–.

3.Bh8 f6 4.e3 e6 5.Qg4 g5 6.Qh5 Ke7 7.Qg6 Kd6 8.Qg8 (8.Nc3 c6 9.Qg8 Kc7+–) 8...b6 9.Nc3 (better 9.b5 Be7 10.Qh7 c6+–) 9...Qe8 10.Bf6 Nc6 11.Nb5 Kd5 12.c4 Ke4 13.Qh7 Qg6 14.Qg6 1–0. Fagan – Wello, internet corr, 2018.

3.Bh8 f6 4.e4 d6 (4...e6 5.Qg4 Kf7 6.Nf3+–) 5.Bc4 c6 (5...e6 6.Qg4 Kf7+–) 6.Bg8 b6 (6...h5 7.c3+–) 7.b5! c5 (7...cb5 8.Bd5 Combination) 8.Bd5 1–0. DEFFM – GuestSNZR, freechess.org, 2019.

2.Bb2 h5

3.e3 Nf6+=.

3.e3 g6?? 4.Bh8+– f6 (4...Nf6 5.Nc3+–) 5.Be2 (better 5.Bd3 Kf7 6.Nh3 Bh6+–) 5...a6 (5...Nh6 6.Bd3 Kf7+–) 6.Bh5! gh5 (6...gh5 7.Qh5 Mate attack) 7.Qh5 1–0. DEFFM – GuestYYLM, freechess.org, 2019.

3.Nf3 h4 4.d3 h3 5.g3 a6 6.Ng5 d6 7.e4 f6 8.Nf3 a5 9.ba5 Ra5 10.Nbd2 c5 11.Be2 Qb6 12.Qc1 Rb5 13.Bc3 Nc6 14.Nc4 Qd8 15.a4 Rb4 16.Bb4 cb4 17.0-0 Na7 18.Qb2 d5 19.Ne3 e6 20.Ng4 e5 21.ed5 Qd5 22.c4 bc3 23.Qc3 Nc6 24.Ne3 Qc5 25.Qc5 Bc5 26.Nc4 Nd4 27.Nd4 Bd4 28.Ra2 Ne7 29.Bf3 0-0 30.a5 Nf5 31.Nb6 Be6 32.Rc2 Bb6 33.ab6 Bb3 34.Rc7 Nd4 35.Be4 Ne2 36.Kh1 Nc3 37.Rc3 1–0. giorgo – mmixalll, playok.com, 2012.

3.Nf3 h4 4.h3 a6 5.e3 a5 6.ba5 g6?? (better is 6...Nf6+/–) 7.Bh8+– g5 8.Ng5 d6 9.Qh5 d5 (9...Nh6+–) 10.Qf7 Kd7 11.Bb5 c6 12.Bd3 c5 13.Bb5 (13.Qe6 Kc7 14.Qb6 Kd7 15.Bf5 e6 16.Qe6 Kc7 17.Qb6#) 13...Kd6 14.Qf4 e5 15.Qe5# 1–0. linakip – robert19781, kurnik, 2011.

3.g3 h4= 4.Bg2 hg3 5.fg3 a5 6.b5 a4 7.a3 c6 8.bc6 dc6 9.Nf3 Qb6 10.Bd4 c5 11.Be3 Qb2 (11...Bh3!? 12.Bh3 Rh3=) 12.Nc3+/– g6?? (better is 12...Qb6+/–) 13.Bc5 (better is 13.Rb1 Qa3 14.Nb5 Qa2 15.Nc7 Kd8 16.Na8 Nd7+–) 13...Bg7 14.Bb4 Nc6 15.Rb1 Bc3 16.Rb2 Bb2 17.c3 Nb4 18.cb4 Ba3? 19.Nd4 Bb4= 20.Nb5 Ba5 21.0-0 Nf6 22.d3?? 0-0?? 23.Na3 Ra6 24.Qa4?? Bb6–+ 25.Qd4 Bd4 26.Kh1 Ra3 27.Rb1 Ng4 28.Bf3 Nf2 29.Kg2 Bh3 30.Kg1 Nd3 31.Kh1 Nf2 32.Kg1 Ng4 33.Kh1 Ne3 34.Kg1 Nd1 35.Kh1 Nc3 36.Rc1 Rb3 0–1. diablo005 – mmixall, kurnik, 2012.

2.b5 a6

3.c4 d5 4.cd5 ab5 5.e4 Nf6 6.Bb5 c6 7.Bd3 cd5 8.Ne2 (8.e5!? Ng4 9.Nf3+=) 8...de4 9.Bb5 Bd7 10.Bd7 (10.Nbc3 Bb5 11.Nb5 e5–/+) 10...Nbd7 (10...Kd7?! 11.0-0+=; 10...Nfd7?! 11.Nbc3 Nc5 12.0-0–/+) 11.0-0 e6 12.a4 (12.d3 Nc5 13.de4 Qd1 (worse is 13...Nfe4 14.Nbc3–/+) 14.Rd1 Nb3 15.ab3 Ra1–+) 12...Ne5 13.Qb3 Bd6 14.Ba3 0-0 15.Qb7 (15.Bd6 Qd6 16.Nbc3 Rfc8–+) 15...Ba3 16.Na3 (16.Ra3 Qd6 17.Ng3 Nc4–+) 16...Qd2 17.Ng3 Qf4 18.Ne2 Qg5 19.Nb5 (19.Ng3 Rfb8 20.Qc7 Nfg4–+) 19...Nd5 20.Ng3 (20.Nc7 Rab8 21.Qa7–+) 20...Rfb8 21.Ne4 (21.Qa8 Ra8 22.Ne4 Nf3 23.Kh1 Qf4–+) 21...Nf3 22.Kh1 Qf4 23.Qc6 Qh2 0–1. PN – marekt, internet, 2010.

3.e4 a5 4.c4 Nf6 5.d3 e5 6.h3 b6 7.Bb2 c6 8.a3 c5 9.Nf3 Bb7 10.a4 d6 11.Nc3 Nbd7 12.Nd5 Nd5 13.cd5 g5 14.g4 Qc7 15.Rc1 Bg7 16.h4 0-0-0 17.h5 Nf6 18.Nd2 Qd7 19.f3 Qc7 20.Nc4 Bd5 21.ed5 Nd5 22.Kf2 Nf4 23.Nd2 Rhe8 24.Kg1 d5 25.Qb3 c4 0–1. patrick317 – hawkwolf, gameknot.com, 2018.

2.c4 Nf6

3.Nc3 e5 4.d3? (better is 4.a3!?=) 4...Bb4–/+ 5.Bb2 d5 6.cd5 Nd5 7.Qb3 Nc6 8.e3 Be6 9.Qc2 Nd4! 10.ed4 ed4 11.Nge2 dc3 12.Bc3 (12.Nc3 Qd6–+) 12...0-0 (12...Nc3!? 13.Nc3 Qd4 14.Rc1–+) 13.a3 Bc3 14.Nc3 Qg5 (14...Re8 15.Be2 Qg5 16.Bf3 Qe5 17.Kd2 Qf4 18.Kd1–+) 15.Ne4 Qe5 (15...Qe5 16.Rb1 f5–+) 0–1. pushtiu (2155) – pierred (2760), net–chess.com, 2010.

3.d4 e5+= 4.de5 (4.a3 ed4 5.Nf3 a5+=) 4...Nc6 (better is 4...Bb4 5.Bd2 Bc5+=) 5.Qd2?? (better is 5.Nd2 Ne5 6.Bb2=) 5...Bb4–+ (5...Ne5?! 6.e3+=) 6.Nc3 Ne4!! (6...Ne5?! 7.Qc2–+) 7.Qd5 (7.Ne4 Bd2 Double attack (7...Bd2 Pinning; 7...Bd2 Deflection; 7...d5 Decoy)) 7...Bc3 8.Kd1 Nf2 9.Kc2 Nb4 10.Kc3 Nd5 11.cd5 Qe7 12.a4 Qe5 13.Kd2 Qa1 14.Nf3 Nh1 15.Kc2 Nf2 16.Bb2 Qf1 17.Bg7 Rg8 18.Bh6 Qe2 19.Nd2 Qd3 (19...Qd3 20.Kc1 Qc3 21.Kb1 Rg2 22.h3 Rg1 23.Nf1 Rf1 24.Bc1 Rc1 25.Ka2 Ra1#) 0–1. chessboy2010 – marekt, internet, 2010.

3.Nf3 e5 4.Ne5 Bb4=.

2.e4 a6

3.d4 g5 4.Nf3 e6 5.c3 b5 6.a4 c6 7.ab5 d5 8.Ne5 f6 9.Qh5 Ke7 10.Qf7 Kd6 11.Ng6 Be7 12.Nh8 e5 13.bc6 de4 14.Bc4 Bg4 15.h3 Nc6 16.hg4 ed4 17.b5 Ne5 18.cd4 Nd3 19.Bd3 ed3 20.Qc4 ab5 21.Nf7 Kd7 22.Qb5 Kc7 23.Nd8 Bd8 24.Ra8 1–0. Trkn – Harry N., Casual Game, 2001.

3.Nf3 d6 4.Nc3 Bg4 5.h3 Bh5 6.Be2 e5 7.d4 Nd7 (7...Bf3 8.Bf3 ed4 9.Qd4=) 8.0-0+= Be7 9.de5 Bf3 10.Bf3 (worse is 10.gf3 de5 11.Rb1 Bg5+=) 10...Ne5 11.Be2 Nf6 12.Be3 0-0 13.Qb1 b6 14.Qb3 Nh7 15.f4 White gets the initiative 15...Nd7 16.Rad1 Bh4 17.Bf3 Kh8 (17...Qe8!?+/–) 18.e5+– Be7 (better is 18...Ra7+–) 19.Ba8 Qa8 20.Qc4 b5 21.Qc7 Rd8 22.Nd5 Bh4 23.Bf2 Bf2 24.Rf2 f6 25.e6 Ndf8 26.e7 Rd7 27.Qd7! Nd7 28.Nc7 Qc8 29.e8Q Qe8 30.Ne8 Nhf8 31.Rd6 f5 32.Re2 Kh7 33.Re7 Nf6 34.Rg7 Kh8 35.Rf6 h5 36.Rf8# 1–0. pierre – cozy2345, internet, 2008.

2.e4 e5

3.a3 a5 4.c3 Nf6 (4...ab4 5.cb4 Bb4 6.Bb2–/+) 5.f3 (5.Bb2!?+=) 5...ab4–/+ 6.g4 (better is 6.cb4!? Bb4! 7.Bb2–/+) 6...d5–+ 7.a4? (better is 7.ed5 Nd5 8.Qb3–+) 7...Ne4! 8.h4 (8.fe4 Qh4 Double attack) 8...Be7 9.fe4 (9.Bb5 c6 10.fe4 cb5 11.g5–+) 9...Bh4 10.Ke2 Bg4 11.Nf3 de4 12.Qc2 Bf3 13.Ke3 Qg5# 0–1. fantum_bantum – marekt, internet, 2010.

3.Bb2 d6 4.d4 Qe7 5.Nc3 Nc6 6.Nd5 Qd7 7.de5 Ne5 8.Qh5 Ne7 9.0-0-0 Nd5 10.Rd5 Qa4 11.Bb5 1–0. mtr – Turbo, internet, 2001.

3.Bc4 Bb4+= 4.Qf3 (4.c3 Ba5+=) 4...Nf6 (4...Qf6 5.a3 Bc5 6.Nc3–/+) 5.c3 (5.Qg3 0-0 (5...Ne4?! 6.Qg7 Qf6 7.Bf7 Kd8 8.Qf6 Nf6 9.Nf3+=) 6.a3 Ne4–/+) 5...Bc5–/+ 6.Ne2 (6.Qg3 Ne4 7.Qe5 Qe7 8.Qe7 Be7–/+) 6...Nc6 7.0-0 (7.Ba3 Qe7 8.Bc5 Qc5–/+) 7...0-0 (7...d6 8.Ba3–/+) 8.Ba3 Qe7 9.Bc5 Qc5 10.Bb3 a5 (10...d6 11.h3–/+) 11.a4 (11.Nc1 d6–/+) 11...d5! 12.ed5 Bg4 13.Qg4?? Ng4–+ 14.dc6 bc6 15.h3 Rab8 16.Bf7 Rf7 17.hg4 Qc4 18.Nc1 Qg4 19.Nd3 Qf5 20.Nc5 e4 21.Na6 e3! 22.de3 Rb2 23.Na3 Rf2 (23...Rf2 24.Nb4 Rf1 25.Rf1 Qf1 26.Kh2 Rf2 27.Kh3 Rg2 28.Nc6 Qh1#) 0–1. simonzxcv – marekt, internet, 2010.

3.f4?? ef4–+ 4.Nf3 f6?? (better 4...Bb4 5.c3 Be7–+) 5.Bc4 (better 5.Nh4!? Qe7 6.Qh5 Kd8 7.Be2 Qe4 8.Nc3 Qb4 9.Ng6+–) 5...Ne7 (5...Qe7 6.Qe2 Nc6 7.Nc3 Nb4 8.d4+=) 6.d4 (6.0-0 Nbc6+=) 6...c6 (6...d5 7.ed5 Nd5 8.Qe2 Kf7 9.0-0 Bb4 10.Nh4+–) 7.Bf4+= b5 (better 7...d5!? 8.ed5 cd5+=) 8.Bb3 Na6 9.c3 d5 10.0-0 h5 (10...de4 11.Nfd2 f5 12.a4+–) 11.Re1 (11.Nbd2 Nc7 12.Bg3 a5 13.ba5 Ra5+–) 11...g5 12.Bc1 Be6? (12...de4 13.Re4 Bf5 14.Re2+–) 13.ed5 (better 13.e5 fe5 14.Ne5 g4+–) 13...Bd5 14.Bd5 (14.Qd3 Kf7+–) 14...cd5 (14...Qd5 15.a4 Nc7 16.Nbd2+–) 15.a4 (15.Qd3!? Kf7+–) 15...Nc7 16.ab5 Nb5 (16...Kf7 17.Rf1 Kg8 18.Na3+–) 17.Re6 (better 17.Qd3 Qb6 18.Na3+–) 17...Bg7+– 18.Qc2 (18.Qe1 Nd6 19.Ra6+–) 18...Rh6? (better 18...Kf7 19.Re2 Nd6+=) 19.Raa6 Nc7 20.Red6 (20.Bg5 Ne6 21.Bh6 Kf7 22.Bg7 Ng7+–) 20...Qc8+– 21.Ra5 Nf5 (21...h4 22.Rc5 h3 23.Qe2+–) 22.Rc6 (22.Qa4 Kf8 23.Rd7 Ne7+–) 22...Ne7+– 23.Rcc5 Qb7 (23...Qd7 24.c4 dc4 25.Rc4+–) 24.Qa4+– Kf7? (24...Kd8+–) 25.c4 (25.Qd7!? Rc8 26.Ra2 Bf8+–) 25...a6? (better 25...Ne6 26.Nc3 Nc5 27.bc5 dc4 28.Qc4 Kf8+–) 26.cd5+– Ncd5 27.Qd1?? (better 27.Qa2 Kg6 28.Rd5 Nd5 29.Rd5+– (29.Qd5?! Qd5 30.Rd5 Rhh8+–)) 27...Nb4 (27...Rhh8!?+=) 28.Qb3+– Kf8 29.Rc3 (29.Nc3 Rb8 30.Qc4+–) 29...Nec6?? (29...Rb8!? 30.Na3 Nbd5 31.Qb7 Rb7=) 30.Rac5 (30.Ba3 Qf7 31.Bb4 Nb4 32.Qb4 Kg8+–) 30...f5?? Exerts pressure on the isolated pawn (better 30...Ne7+=) 31.Bg5+– (31.Rf5?! Rf6 32.Rf6 Bf6 33.Rc6 Qc6 34.Qb4 Kg7 35.Bg5 Bg5 36.Ng5 Qb5 37.Qe7 Kg6+–) 31...Rg6?? (31...Nd4 32.Be7 Ke7 33.Rc7 Kd6+–) 32.Rf5 Ke8 33.Re3 Kd7 34.Qf7 Kc8 (34...Kd6 35.Qb7 Ra7 36.Bf4 Be5 37.Be5 Ke6 38.Bc7 Kf5 39.Qc8 Re6 40.Qe6) 35.Qg6 (35.Re8 Nd8 36.Rd8) 35...Bd4 36.Nd4 Nd4 37.Re8 (37.Rf8 Kc7 38.Re7) 37...Kd7 38.Qg7 (38.Rf7 Ke8 39.Qg8) 38...Kc6 39.Rf6 (39.Rf6 Kc5 40.Re5 Qd5 41.Qc7 Nbc6 42.Qd6 Kb6 43.Qd5 Rb8 44.Qd4 Kb7 45.Qd7 Ka8 46.Qc6 Rb7 47.Rf7 Ka7 48.Qb7; 39.Qh6 Ne6 40.Qe6 Kc7 41.Rf7) 1–0. michael008 – iuse2begoodum, gameknot.com, 2014.

3.h3 e6 4.d4 (4.a3!?+=) 4...Bb4–/+ 5.c3 Ba5 6.Ne5 d6 7.Ng4 (7.Nc4 c6–/+) 7...Nc6 8.e3 Ne4 9.Qd3 d5 10.Ba3 Qf6?? (better is 10...h5 11.Ne5 Ne5 12.de5 c6–+) 11.Nf6+– Nf6 12.Nd2 Bd7 13.g4 0-0-0 14.Nb3 Ne4 15.Na5 Na5 16.Rb1 Bc6 17.Bg2 Rd7 18.Be4 de4 19.Qe2 e5 20.de5 Rd3 21.Bb4 Nc4 22.a3 Ba4 23.h4 Rhd8 24.h5 Ne5 25.0-0?? Rd2–/+ 26.Qe1 Nf3–+ 27.Kg2 Ne1 28.Rfe1 b6 29.c4 R2d3 30.c5 Kb7 31.cb6 ab6 32.Bc5 Ka6 33.Bd4 f6 34.Ra1 c5 35.Bb2 R8d7 36.Kg3 Rd2 37.Bc3 R2d3 38.Bb2 c4 39.Bd4?? c3 40.Rec1?? c2 41.Kf4 Rd2 42.f3 ef3 43.Kf3 Rd3 44.Ke4 Rd1 45.Kf5 Rd2 46.Ra2 Rd1 47.Rcc2?? Bc2–+ 48.Rc2 b5 49.Rc6 Ka5–+ 50.Bc3 Ka4 51.Bb4 R1d3 52.Kf4 R7d4?? 53.ed4+– Rd4 54.Kf5 Rd5 55.Kg6 Rg5 56.Kf7 Rg4 57.Ra6 Kb3 58.Rb6 Rg5 59.Bf8 Rh5 60.Bg7?? Ka3= 61.Bf6 b4 62.Bg7 b3 63.Ra6 Kb4 64.Kg6 Rg5 65.Kh6 Rg7 66.Kg7= Kc3 67.Rb6 b2 68.Rc6 Kd2 69.Rb6 Kc2 70.Rc6 Kd2 71.Rd6 Kc2 72.Rc6 Kd2 ½–½. valerypavlovich (2115) – workchess (2265), net–chess.com, 2010.

2.e4 Nf6

3.e5 Nd5 4.a3 d6 5.ed6 Qd6 6.Nf3 a5 7.ba5 Ra5 8.d4 Nc6 9.Bd2 Ra8 10.Bb5 Qe6 11.Qe2 Qf5 12.c4 Nf4 13.Bc6 bc6 14.Bf4 Qf4 15.0-0 e6 16.a4 Ba6 17.Nc3 Bd6 18.Rfb1 0-0 19.Qa2 c5 20.Rd1 Rfb8 21.Nb5 Bb7 22.d5 ed5 23.cd5 Bc8 24.Nd6 cd6 25.Re1 Bg4 26.Nd2 Rb4 27.a5 Bd7 28.Nf3 Bb5 29.Qd2 Qf5 30.Kh1 Ba4 31.Re3 Ra5 32.Rae1 Bb5 33.Nh4 Qf6 34.Nf3 Qb2 35.Re7 Ra2 36.Qb2 Rbb2 37.Rb7 Bc4 38.Rb2 Rb2 39.Rd1 Rf2 40.Kg1 Re2 41.h4 Kh7 42.Kh2 Kg6 43.Kg3 Kf5 44.h5 Re3 45.Kf2 Ra3 46.Nd2 Ra2 47.Ke3 Bd5 48.Nb1 Be4 49.g4 Ke5 50.Nc3 Ra3 51.Kd2 d5 52.Rf1 f6 53.Rg1 d4 54.Ne4 Ke4 55.Kc2 c4 56.Kb2 Re3 57.Rc1 Re2 58.Ka3 Kd5 59.Kb4 c3 60.Rc3 dc3 61.Kc3 Ke4 62.Kb4 0–1. COMP – COMP, blitz, 2002.

3.e5 Ne4 4.h4 a6 (4...a5 5.d3 Nf2 6.Kf2 ab4 7.Nf3+/–) 5.d3 Nc3? (better is 5...Nf2 6.Kf2 Nc6+/–) 6.Nc3+– Nc6 7.Nf3 Nb4 8.Be2 (8.d4 d5 9.Rb1 Nc6+–) 8...e6 9.0-0 d5 10.a3 Nc6 11.Qd2 f6 12.d4 Be7 13.Qd3 fe5 14.Qg6 Kf8 15.Ne5 Ne5 16.de5 Bh4 17.g3 Bg5 18.Bh5 Qf6 19.Qe8# 1–0. marre – oppo, internet, 2010.

2.Nf3 d5

(--> 1.b4 d5 2.Nf3 h6).

3.Bb2 Nf6 4.a3 Bf5 5.e3 e6 (--> 1.b4 d5 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.a3 h6). 2.Nf3 Nf6

2.Nf3 Nf6

3.Bb2 e6 4.a3 a5 5.b5 b6 6.e3 Bb7 7.Nc3 d5 8.Be2 Bd6 9.Nd4 0-0 10.f4 Nbd7 11.0-0 Nc5 12.Qe1 Re8 13.Qg3 Qe7 14.Qh3 Qf8 15.Qh4 Be7 16.Qe1 Rec8 17.a4 Re8 18.Bf3 Nfe4 19.d3 Nc3 20.Bc3 Red8 21.Qg3 Bf6 22.Ra2 Rd7 23.Bb2 Re8 24.Ba3 Rdd8 25.c3 Rb8 26.Nc2 Be7 27.d4 Ne4 28.Be4 de4 29.Be7 Qe7 30.Na3 c5 31.Rd1 Rec8 32.Raa1 cd4 33.ed4 Qc7 34.c4 Qe7 35.Qe3 Qb4 36.Rdc1 Rd8 37.Rc3 Ba8 38.Rb1 Qa4 39.Nc2 e5 40.fe5 Qa2 41.Qc1 Rbc8 42.Ra1 Rc4 43.Ra2 Rc3 44.Ra3 Rdc8 45.Rc3 Rc3 46.Qb2 Rd3 47.Ne1 Rd1 48.Kf1 e3 49.Qc2 Bg2 50.Qg2 Rd4 51.Qb7 Rd2 52.Qb6 Rh2 53.Qa5 Rb2 54.Nd3 Rb3 1–0. COMP – COMP, blitz, 2002.

3.Bb2 e6 4.a3 a5 5.b5 d5 6.c4 Bd6 7.cd5 ed5 8.e3 0-0 9.Bf6 Qf6 10.Nc3 Be6 11.d4 Qg6 12.Nh4 Qg5 13.Nf3 Qg4 14.Qc2 Nd7 15.h3 Qh5 16.Bd3 Nb6 17.Ke2 f5 18.Kf1 Qg6 19.Na4 Nc4 20.Nc5 Bc5 21.dc5 Qf6 22.Ra2 f4 23.e4 Ne5 24.ed5 Bd5 25.Ne5 Qe5 26.Bc4 f3 27.g3 Rae8 28.Kg1 Qd4 29.Bd5 Qd5 30.Ra1 Re2 31.Qc3 b6 32.cb6 Qb5 33.Rh2 cb6 34.Rd1 Rfe8 35.Rf1 Rb2 36.Qf3 Rb3 37.Qg4 Ra3 38.Rc1 Ra2 39.Rg2 a4 40.Rc7 Qb2 41.Kh2 b5 42.Rb7 Qe5 43.Qd7 Rb2 44.Qd3 Kh8 45.Ra7 Qf6 46.Qd5 Rd8 47.Qc5 Qd4 48.Qe7 Rf2 49.Qd8 Qd8 50.Rf2 Qd4 51.Raf7 a3 52.Rf8 Kh7 53.R8f4 Qd6 54.Ra2 b4 55.Rf3 Qd5 56.Rff2 b3 57.Ra3 Qc5 58.Raa2 ba2 59.Ra2 Kg6 60.Re2 h5 61.Kg2 Qd5 62.Kh2 Kf5 63.Rf2 Ke4 64.Rc2 h4 65.gh4 Qe5 66.Kg2 Ke3 67.Kg1 Qg3 68.Rg2 Qh3 69.Rg7 Qh4 70.Kg2 Qe4 71.Kg1 Kf3 72.Rg2 Qh4 73.Rg8 Qd4 74.Kh2 Qd2 75.Kh1 Qc1 76.Kh2 Qc2 77.Kg1 Qb1 78.Kh2 0–1. COMP – COMP, blitz, 2002.

3.e3 d5 4.a3 Bg4 5.Bb2 e6 6.d4 a5 7.b5 Bd6 8.Bd3 0-0 9.0-0 c6 10.Nc3 Nbd7 11.h3 Bh5 12.bc6 bc6 13.a4 e5 14.Be2 e4 15.Ne5 Be2 16.Ne2 Re8 17.Nd7 Qd7 18.Qd2 Reb8 19.Bc3 Bc7 20.Rfb1 Rb1 21.Rb1 Nh5 22.Kf1 Qd6 23.Rb7 Qh2 24.Ng1 Nf6 25.Qe1 Ne8 26.f4 Bd8 27.Qb1 Bh4 28.Rb6 Nd6 29.Qc1 Nc4 30.Rb3 Rd8 31.Be1 Be7 32.Bf2 Rd6 33.Rb8 Kh7 34.Rb7 Rg6 35.g4 Bb4 36.f5 Rf6 37.c3 Bd6 38.Qd1 Ba3 39.Qe1 Bb2 40.Rb3 c5 41.dc5 Ba3 42.Rb5 Rc6 43.Rb7 f6 44.Qd1 Bc5 45.Qd5 Ne3 46.Be3 Be3 47.Rg7 Kg7 48.Qd7 Kg8 49.Qe8 Kh7 50.Qd7 ½–½. COMP – COMP, blitz, 2002.

1.b4 Nh6

2.a3 c6 3.c3 (3.d4 g6+=) 3...d6 (3...d5 4.d4=) 4.Bb2 (4.d4 Ng4+=) 4...Qc7 (4...e5 5.e4=) 5.e3 Nd7 6.Nf3 Nf6 7.d4 Bd7 (7...e5 8.de5 de5 9.c4=) 8.Bd3 0-0-0 (8...Bf5 9.c4+=) 9.Nbd2 Kb8 (9...d5 10.Ne5+=) 10.0-0 b6 (10...e6 11.c4+/–) 11.Qc2 a6 (11...e6 12.c4+/–) 12.Rfe1 (12.Ba6 Bf5 13.Bd3 Bd3 14.Qd3 e6+–) 12...Ka7 13.c4 e6 14.Rad1 Be7 15.e4 Ne8 (15...d5 16.ed5 cd5 17.c5+/–) 16.e5 (16.c5 dc5 17.bc5 b5+–) 16...d5 (16...de5 17.de5 c5 18.b5+/– (18.Bh7?! g6=)) 17.cd5 (17.c5!? bc5 18.dc5 Nf5+–) 17...ed5+/– 18.Nb3 f6 19.ef6 gf6?? 20.Nc5 bc5 21.dc5?? Nf7?? 22.Bf5 Bf5–/+ 23.Qf5 Ng7 24.Qc2 Rhg8 25.Re2 Rde8 26.Rde1 Ng5 27.Ng5= fg5 28.Bg7? Rg7–/+ 29.Re7?? Rge7–+ 30.Re7 Re7 31.g3 Re8 32.Kg2 Rb8 33.h4 gh4 34.gh4 Rb7 35.Kf1 Qd7 36.Qc3 Qe7 37.a4 Qf7 38.b5 cb5 39.ab5 Rb5 40.c6 Qc7 41.h5 Rb6 42.h6 Qc6 43.Qc6 Rc6 0–1. Fournier,Frederic (1930) – capataz (1715), Active Blind, 2008.

2.a3 e6 3.Bb2 b6 4.Nf3 Bb7 5.g3 (5.Nc3 Be7+=) 5...Nf5= 6.Bg2 h6 (6...Nc6 7.0-0+=) 7.d3+= Nc6 (7...a5 8.b5+=) 8.Nbd2 Nfe7 (8...Be7 9.e4 Nd6 10.Bg7+/–) 9.0-0+/– 1–0. ANZARBOND (1640) – assad_ia, internet, 2009.

2.a4 e5 3.c3 d5 4.d4 ed4 5.Bh6 gh6 6.Qd4 Rg8 7.g3 (7.e4 Be6=) 7...Bg7 8.Qd2 (8.Qd3 Nc6=) 8...Be6 9.Bg2 Nd7 (better is 9...Nc6=+) 10.Bd5+/– Nb6 (10...Nc5!? 11.Be6 Ne6+/–) 11.Bb7+– Qd2 12.Kd2 Rd8 13.Kc2 Nd5 14.Bc6 Kf8 15.Bd5 Rd5 16.e4 Rd7 17.Nd2 Ke7 18.Ne2 Rgd8 19.Rad1 a5 (19...h5+–) 20.f3?? (better is 20.ba5 Rd3 21.h3+–) 20...ab4+= 21.cb4 h5? (better is 21...Rd3!?+=) 22.f4 (22.Nc3!? Bc3 23.Kc3 Rd3 24.Kc2 R3d4+–) 22...Bg4+/– 23.Rhe1 c5 (23...Ra8 24.a5 c5 A) < 25.bc5 Ra5 26.Nb3 Ra2 27.Kc1 Rd1 (< 27...Re2 28.Re2 Be2 29.Rd2–/+) 28.Kd1 Bc3–+; B) 25.Rc1+/–) 24.bc5+– Ra8 25.h3! Bh3 26.Nc3 Ra5 27.Nb3 Bc3 28.Rd7 Bd7 29.Kc3 Ra4 30.Re3 Be6 31.f5 Bd7 32.Nd4 Ra3 33.Kd2 Ra4 34.Rd3 Rc4 35.c6! Bc6 36.Nc6 Rc6 37.Ke3 Rc1 38.Kf4 f6 39.Ra3 Rf1 40.Ke3 Re1 41.Kf3 Rf1 42.Ke2 Rg1 43.Ra7 Kd6 44.Kf2 Rh1 45.Rh7 Rh2? 46.Kf3+– Rh1 47.Rf7 Ke5 48.Re7 Kd4 49.Rd7 Ke5 50.Rd5# 1–0. Wiacheslav (1655) – yaunootz (1645), internet, 2007.

2.Bb2 a5 3.b5 a4 4.a3 e6 5.c4 Rg8 (5...d5 6.cd5 ed5 7.Nc3=) 6.e4 g5 (6...d5 7.Nc3 de4 8.Ne4+=) 7.Qh5 (7.Nc3 Bg7+–) 7...b6 (7...d5 8.Qe2=) 8.d4 Rg6 (8...d5 9.Qe2 dc4 10.Qc4+–) 9.Nf3 (9.Bd3+–) 9...Qe7? (9...g4 10.Nfd2+=) 10.Bc3 (10.Bc1!? f6 11.e5+–) 10...Bb7 (10...g4 11.Nfd2+–) 11.Bd3 Nc6?? (better 11...g4!? 12.Nfd2 Kd8+–) 12.e5 (better 12.bc6 dc6 13.Ne5+–) 12...Na5 13.Bg6 (13.Ba5 Ra5 14.Bg6 fg6 15.Qg5 Bf3 16.Qe7 Be7 17.gf3 Nf5+=) 13...fg6+– 14.Qh3?? (better 14.Qg5!? Bf3 15.Qe7 Be7 16.gf3 Nc4 17.Ra2+=) 14...Nb3?? (14...g4 15.Qg3 gf3 16.Ba5–+) 15.Ra2?? (better 15.Nfd2 Na1 16.Ba1=) 15...Nc1 (15...g4 16.Qg3 gf3 17.gf3–+) 16.Rc2 (16.Rd2 g4 17.Qg3 gf3 18.gf3–+) 16...Nd3 17.Ke2?? (17.Kf1 g4 18.Qg3 gf3 19.gf3–+) 17...Be4 (better 17...Nf4 18.Ke3 Nh3 19.gh3 Qf7 20.Ng5 Qf5–+) 18.Nbd2 (18.Nbd2 Nf4 19.Ke1 Bc2 20.Bb4 Qb4 21.ab4–+). afsharian – Poetonbrakeway, lichess.org, 2018.

2.Bb2 a6 3.a3 (3.e4 Nc6=) 3...b5 (3...d5 4.Nf3=) 4.e3 Bb7 (4...d5 5.a4 ba4 6.Ra4=) 5.Nf3 e6 6.Nc3 (6.c4 a5+=) 6...f6 (6...Nc6 7.Be2=) 7.Be2 (7.d4 Bd6=) 7...Nc6 (7...c5 8.bc5 Bc5 9.d4=) 8.h3 (8.0-0+=) 8...a5 (8...Nf7 9.0-0=) 9.0-0 (9.ba5!? Ra5 10.Nb5+/–) 9...ab4= 10.ab4 (10.Nb5 ba3 11.Ba3 Ba3 12.Na3 0-0=) 10...Ra1 11.Qa1 (11.Ba1 Nb4 12.Nb5 Be7=) 11...Bb4 (11...Nb4 12.Nb5 Bf3 13.Bf3 Nc2 14.Qa5+/–) 12.Bb5 (12.Nb5 e5+=) 12...Bd6 (12...0-0 13.Ba3 Qe7 14.Bc6 Bc6 15.Bb4 Qb4 16.Nd4=) 13.Be2 (13.Ne4 Be7+=) 13...e5 (13...0-0 14.Nb5+=) 14.Re1 (14.Rb1 Nb4+=) 14...Nb4 15.Qb1 f5 Black prepares e4 (15...e4 16.Nd4=) 16.d3 (16.Nb5 Bf3 17.Bf3 Nc6+/–) 16...e4 17.de4 fe4 18.Nd4 (better is 18.Nd2 Qh4 19.Nb5+=) 18...c6?? (better is 18...0-0=) 19.Ne4+– Qc7 (19...Be7 20.Ba3 c5 21.Nc5 Bc5 22.Bb4+–) 20.Nd6 Qd6 21.Nf3 Rg8 22.Ba3 c5 23.c3 Ba6 24.cb4 Be2 25.Re2 Qg6 26.Qg6 hg6 27.bc5 Kd8 28.Rd2 Nf5 29.c6 (29.c6 d5 30.e4+–) 1–0. ANZARBOND (1685) – chessdoctor79, internet, 2010.

2.Bb2 b5 3.Nf3 (3.a4 ba4 4.Ra4 d5+=) 3...f6 (3...a5 4.e3+=) 4.a4 (4.e4 e5+=) 4...c6 (4...e5+=) 5.a5 (5.ab5!? cb5 6.e3+/–) 5...a6 (5...e5 6.c3+=) 6.e4 (6.Bc3 e5=) 6...e5 7.h3? (better is 7.c3=) 7...Bb4–/+ 8.Bc3 Bc3 9.Nc3 b4 (9...d5 10.ed5 cd5 11.d4–+) 10.Ne2 c5 11.c3 (11.Ng3 Nc6–/+) 11...Nc6 (11...d5 12.ed5 e4 13.Nh4–/+) 12.cb4 Nb4 (12...cb4 13.d4–/+) 13.g4?? (better is 13.Nc3–/+) 13…Nd3# 0–1. chessdoctor79 – jevaisbien, internet, 2010.

2.Bb2 c6 (--> 1.b4 c6 2.Bb2 Nh6).

2.Bb2 e5 (--> 1.b4 e5 2.Bb2 Nh6).

2.Bb2 e6 (--> 1.b4 e6 2.Bb2 Nh6).

2.Bb2 f5 3.b5 c5 4.bc6 Nc6 5.Nf3 d6 6.Nc3 e5 7.e4 f4 (7...fe4!? 8.Ne4 d5=+) 8.Bb5 Qb6 (8...a6 9.Be2=) 9.d4 (9.Nd5 Qa5 10.Bc3+–) 9...ed4? (9...Kd8 10.a4 ed4+–) 10.Bc6?? (10.Nd4 Bg4 11.f3 Bd7+–) 10...Qc6?? (better 10...bc6 11.Na4 Qa5 12.c3 c5–+) 11.Nd4+– White gets strong initiative 11...Qc4 12.Nce2 (12.Nd5 Bd7+–) 12...g5 (12...d5 13.ed5 Bd6 14.Qd3 Qd5 15.Qb5 Qb5 16.Nb5 Bb4 17.c3+=) 13.Nf5 (13.Qd3 Qd3 14.cd3 Bg7+–) 13...Nf5 (better 13...Bf5!? 14.ef5 Rg8=) 14.Bh8+– (14.ef5?! Rg8 15.0-0 Bf5=) 14...Qe4 15.0-0 b6 (better 15...Kd8!?+–) 16.Re1+– Kd7?? (16...Kf7 17.Nf4! Qc6 18.Nd5+–) 17.Nc3 (17.Ng3 Ne3 18.Ne4 Nd1 19.Rad1 h6 20.Nf6 Kc7+–) 17...Ne3?? (better 17...Qc4+–) 18.fe3 fe3 (18...Qf5+–) 19.Ne4 Bb7 20.Re3 d5 21.Nf6 Kc7 22.Nh7 (22.Nd5 Bd5 23.Qd5 Re8 24.Re8 Bc5 25.Kf1 Bd6 26.Qc4 Bc5 27.Be5 Kc6 28.Re7 b5 29.Qe6 Bd6 30.Qd6) 22...Bc5 23.Be5 Kc6 24.Bd4 Rg8 25.Bc5 bc5 26.Re6 Kb5 (26...Kd7 27.Qg4 Rf8 28.Nf8 Kd8 29.Qa4 Kc8 30.Qd7 Kb8 31.Re8 Bc8 32.Qc8) 27.Rb1 Kc4 (27...Ka5 28.Qd3 Ka4 29.Qb5 Ka3 30.Qb3) 28.Qd3 1–0. kilrroy – fishdrzig, gameknot.com, 2019.

2.b5 b6 3.Bb2 Bb7 4.d3 (4.Nc3 a6=) 4...Nf5 5.e4 Nd6 6.c4 e6 7.e5 Nf5 8.Nf3 Bb4 9.Nc3 Nh6 (better is 9...a6=) 10.Ba3?? (better is 10.a3 Be7 11.Be2+=) 10...Ba3 (10...Bc3 11.Nd2–+) 11.Be2 (11.Qb3 Qe7–+) 11...Ng4 (better is 11...Bb2!? 12.Rc1 Bc1 13.Qc1–+) 12.Qd2 (12.Qb3 Qe7–+) 12...a6 13.Ng5 (13.d4 0-0–+) 13...ab5 (better is 13...Ne5 14.d4 Be7 15.Ne6 de6 16.de5 Nd7–+ (16...Bg2?! 17.Qd8 Kd8 18.0-0-0 Ke8 19.Rhg1–+)) 14.Bg4 bc4 15.Qf4? (better is 15.Bh5 0-0 16.Bf3 Bf3 17.Nf3 cd3 18.Rb1–+) 15...0-0 16.dc4 (16.Nge4 Bb2 17.Rb1 Bc3 18.Nc3 cd3–+) 16...Bb2 17.Rb1 (17.Rc1 Bc1 18.Qc1 Bg2 19.Rg1–+) 17...Bc3 18.Kd1 Ra2 19.Bf3 Ba6 (better is 19...Rd2 20.Kc1 Rf2–+) 20.Qe4 (20.Ne4 Ba1 21.Rc1 Nc6–+) 20...f5 (better is 20...Qg5 21.Qe3 Qe3 22.fe3 Bc4 23.g3–+) 21.Qh4 (21.ef6 Rd2 22.Kc1–+) 21...h6 22.Rc1 (22.c5 hg5 23.Qg3 Bd3–+) 22...Qg5 (better is 22...Rd2 23.Ke1 Rd4 24.Rc3 Rh4–+ (24...Qg5?! 25.Qd4 Rd8 26.c5=)) 23.Qg5 hg5 24.Rc3 Nc6 (24...g4 25.Be2–+) 25.Re1 g4 26.Bc6 dc6 27.c5 (27.Rf1–+) 27...Rd8 28.Kc1 Ra1 29.Kc2 Re1 30.Ra3 Re2 (31.Kc1 Bd3 32.cb6 cb6–+) 0–1. Taulien,Christian – Lausch,Axel, remoteschach.de, 2002.

2.b5 d5 3.d4 =+.

2.b5 e6 3.Bb2 Bb4?? (better is 3...d5=) 4.Bg7+– Rg8 5.Bh6 d6 6.Nf3 Rg6 7.Bg5 (7.Bf4 Qf6 8.c3 Qf4 9.cb4 Qb4+–) 7...Qd7?? (better is 7...Rg5 8.Ng5 Qg5+–) 8.e4 a6 9.c3 Bc5 10.d4 ab5 (10...Bb6 11.ba6 Na6+–) 11.dc5 Ra4 (11...f6 12.Be3 d5 13.e5+–) 12.Bd3 Qc6 (12...e5 13.Qe2 c6 14.Rg1+–) 13.e5 (better is 13.cd6 f6 14.Be3+–) 13...Qd5 (13...Re4 14.Be4 Qe4 15.Kf1 Qc4 16.Kg1 Qc5 17.Be3+–) 14.c4! Qc5 (14...Qc4 15.Bc4) 15.0-0 (15.Bg6 hg6 16.ed6 Qd6 17.cb5 Re4 18.Be3 Qd1 19.Kd1 Nd7+–) 15...Nc6 (15...Rc4 16.Nbd2 f5 17.Nc4 bc4 18.Be3+–) 16.cb5 (better is 16.Be3!? Qb4 17.Bg6 hg6 18.ed6 Qd6 19.cb5 Qd1 20.Rd1 Ne7+–) 16...Ne5 17.Bg6 Ng6 (17...Nf3 18.Qf3 hg6+–) 18.Qa4 Qc3 19.Nbd2 (better is 19.Qa8 Kd7 20.Nc3 e5+–) 19...e5 20.Ne4 (20.Rac1 Qd3+–) 20...Qd3 21.Nf6 Kf8 22.Qa8 Qf5 23.Rac1 Ne7 24.Rc7 (24.Bh6) 24...h6 25.Bh6# 1–0. Taulien,Christian – Moch,Stefan, remoteschach.de, 2002.

2.c3 c6 3.Bb2 (3.d4 Ng8+=) 3...Qb6 4.e3 d6 5.Nf3 Be6 (5...e5 6.e4=) 6.d4 Nd7 7.Bd3 Rg8 (7...d5 8.Qc2+=) 8.0-0 g6 (8...d5 9.Bh7 Rh8 10.Bc2+/–) 9.Nbd2 Bg7 10.Qc2 (10.a4 0-0-0+/–) 10...0-0-0 (10...d5 11.a4+/–) 11.a3 Kb8 12.Rfe1 Ka8 13.Rac1 f6 14.Qb1 (14.c4 Rge8+/–) 14...Bf7 15.h3 (15.c4 e5+/–) 15...f5 16.e4 fe4 17.Ne4 e5 (17...Nf5 18.Neg5 Bd5 19.Bf5 gf5 A) 20.Re7? Bf6 21.Rd7 Rd7 (worse is 21...Bg5 22.Rd8 Qd8 23.Qf5–/+) 22.Qf5 Bg5 23.Ng5 Rdg7–/+; B) 20.Qf5?! e5+/–; C) 20.c4 Bf3 21.Nf3+/–) 18.de5 (18.Nd6 ed4 19.Nf7 Nf7 20.cd4 Nd6+–) 18...de5 (18...Ne5 19.Ne5 Be5 20.c4+/–) 19.Bc2 (19.c4 Rgf8+/–) 19...Rge8 (19...Rgf8 20.Rcd1+=) 20.Rcd1 Be6 21.Ned2 Rf8+= 22.Be4 g5 23.Nf1 g4+= 24.hg4 Bg4 25.Ne3+= Bf3 26.Bf3 Bf6 27.Nf1 Bg5 28.Ng3 Nf6 29.Rd8 Rd8 30.Rd1 Rd1 31.Qd1 Qc7 32.Qc2 Nf7 33.c4 h5 34.Nf1 h4= 35.Qd1 h3 36.Ng3 hg2+= 37.Bg2 Bh4 38.c5 e4 39.Bc1?? Bg3–+ 40.fg3 Qg3 41.Qf1 Qg2?? 42.Qg2 Ng4 43.Qg4 (43.Qg4 a6 44.Qc8 Ka7 45.Bf4 Ne5 46.Be5 a5 47.Qc7 ab4 48.Qa5) 1–0. Fournier,Frederic (1865) – zaxscdvf (1805), Active, 2009.

2.Nc3 c6 3.Bb2 (3.d4 d5+=) 3...f6 (3...d5 4.Nf3=) 4.e4 e5 5.Bc4 (5.a3!?=) 5...Bb4=+ 6.Qh5 Kf8 7.a3 Be7 8.Nf3? (8.Nge2 d6=+) 8...b5?? (better 8...d5 9.Ne5 dc4 10.Nc4 Bg4–+) 9.Bb3=+ Bb7 (9...d5 10.h3 (10.ed5?? Bg4 11.Qh4 f5–+) 10...d4 11.Nb5=+) 10.0-0-0 (10.d4!? ed4 11.Nd4=) 10...a5 11.d3 (11.d4 b4 12.ab4 ab4=+) 11...b4 12.ab4 ab4 13.Ne2 d5 14.ed5 (14.d4 Bc8 (14...de4 15.de5 Qe8 16.ef6 Bf6 17.Qc5 Be7 18.Qd4+–) 15.h3 Nf7–/+ (15...de4?! 16.de5 Qa5 17.ef6 Bf6 18.Qa5 Ra5 19.Nd2=)) 14...cd5 15.Nd2 (15.Kd2–/+) 15...Bc5 (better 15...Bc8 16.h3 Be6–+) 16.d4=+ ed4 17.Bd4 (17.Nd4 Qe8 18.Qe8 Ke8+=) 17...Bd4 18.Nd4 Qd7 (18...Qd6!?–/+) 19.Rhe1= Na6 (19...Ra1 20.Nb1 Ra6=) 20.h3?? (better 20.Ne6!? Kg8 21.Nc4+–) 20...Nf7 (better 20...Nc5!?–/+) 21.Ne6= Kg8 22.Ng7?? (better 22.Nc4 Qc6 23.Qg4+=) 22…Kg7–+ (22...Kg7 23.Ne4 Rhd8–+) 0–1. specialqueen (1620) – Delboy Smith (1790), ChessWorld.net, 2009.

2.Nc3 d5 3.d4=.

2.c4 c5 3.bc5+= Qa5 4.Nf3 Qc5 5.Qb3 Ng4 6.d4+= Qa5 7.Bd2 Qc7 8.h3 Nf6+= 9.Nc3 e6 10.e3 Bd6? 11.c5?? Be7+/– 12.Bc4 a6 13.a4 d5 14.cd6 Bd6+= 15.0-0 b6 16.Rab1 Bb7 17.Qb6+– Bf3 18.Qc7 Bc7 19.gf3 0-0 20.Kh1 Nc6 21.Rg1 Ba5+/– 22.d5 ed5 23.Nd5+/– Nd5 24.Ba5 Na5 25.Bd5 Rad8 26.e4 Rc8 27.Rb6 Rc3 28.Ra6 Nb3 29.Bb3 Rb3 30.Kg2 Ra3 31.a5 g6 32.Rd1 h5 33.Rd5 Rb8 34.Rf6 Kg7 35.e5 Ra8 36.Rd7 R3a5 37.Rdf7 Kg8 38.e6 Re5 39.Rg6 Kh8 40.e7 Re7 41.Re7 1–0. Ole P (1730) – Heldje (1670), ChessWorld.net, 2009.

2.c4 d5 3.cd5= Qd5 4.e3 (4.Nc3 Qd6=) 4...Bg4 (4...e5 5.Nc3 Qe6 6.a3=) 5.f3 (5.Qa4 Qd7 6.b5 e6=) 5...Bh5 (5...Bd7 6.Nc3 Qh5 7.d4=) 6.Ne2 (6.Nc3 Qd8=) 6...e6 (6...e5 7.a3=) 7.Nf4 Qe5 (7...Qg5 8.Qa4 c6 9.Nc3 Qh4 10.g3+=) 8.d4 (8.Qa4!? Nc6 9.d4+/–) 8...Bb4= 9.Kf2 Qg5? (better is 9...Qa5 10.Nh5 Qh5 11.Qa4 Nc6+=) 10.Qa4+– Nc6 11.a3 Bd6 12.h4 Qf5? 13.Bd3 (13.Bd3 Qa5 14.Qa5 Na5 15.Nh5+–) 1–0. magnus75 (2090) – JFRAY (1760), ChessWorld.net, 2003.

2.c4 f6 3.d3 Nf7 4.Nf3 e5 5.a3 a5 6.Bd2 (better is 6.b5!?=) 6...ab4–/+ 7.a4 (7.Qb3 Nc6–/+) 7...Nc6 8.g3 d5 9.Bg2? (better is 9.cd5 Qd5 10.Bg2–/+) 9...dc4–+ 10.dc4 Bc5 (10...e4 11.Ng1 Qd4 12.Ra2–+) 11.0-0 0-0 12.Ne1 Qd6 13.Nd3 Be6 14.Qb3 Na5 15.Qd1 Ra7?? 16.Nc5+/– Qc5 17.Be3 Qc4 18.Ba7 b6 19.Qd3 Qd3 20.ed3+/– Nd6 21.Nd2+– Nc8 22.Bb8 c5 23.Rac1 Nc6? 24.Bc6 (24...Ne7 25.Bc7 Nc6 26.Bb6+–) 1–0. yaunootz (1640) – thotares (1690), internet, 2007.

2.d3 Nc6 3.b5 Nd4 4.c4 e6 (4...e5 5.Bh6 gh6 6.e3=) 5.e3 (5.Bh6 gh6 6.e3 Nf5+=) 5...Ndf5= 6.Nf3 a6 (6...d5 7.d4=) 7.ba6 Ra6 8.Be2 Nh4 9.0-0 N6f5 10.Nc3 Nf3 11.Bf3 Nh4 12.Be2 Be7 13.g3 (13.d4 0-0+=) 13...Nf5 14.Bb2 b6 15.Bf3 0-0 16.Qd2 Nd6 17.Bg2 Bb7 18.Bb7 Nb7 19.e4 Nc5 20.d4 Na4 21.Na4 Ra4 22.Qc2 (22.Rfc1 f5 23.e5 Qa8=+) 22...Qa8 23.f3 Qc6 (23...Ra2?? 24.Ra2 Qa2 25.Ra1 Qa1 26.Ba1+–) 24.Rfc1 Rfa8 25.Qb3 Rb4 (25...Ba3 26.Qc2–/+) 26.Qc3 Raa4 27.c5 (27.d5!? Qc5 28.Kg2–/+) 27...Rd4 28.cb6 Qb6 29.Kh1 Rac4! 30.Qb3 (30.Qc4 Qb4 (30...Qb2)) 30...Rc1 31.Rc1? (better is 31.Bc1 Rb4 32.Qd3–+) 31...Rb4–+ 32.Qa3 Qf2 33.Be5 Rc4!! 34.Qa8 Bf8 35.Rc4 (35.Bc3 Rc3! 36.Re1 Rc2 37.Qf8 Kf8 38.Rb1 Qh2#) 0–1. thotares (1680) – jaskier (2170), internet, 2007.

2.d3 d5 3.Bh6 (better is 3.Nf3!?=) 3...gh6–/+ 4.c3 a5 5.ba5 (5.b5 c6–/+) 5...c5 (5...Bg7 6.d4–/+) 6.Nd2 (6.g3 Nc6–/+) 6...Qa5–+ 7.Qc2 Bg7 8.Rc1 Nc6 9.Ngf3 (9.Nb3 Qb6–+) 9...Qa2 10.Qa2 Ra2 11.e4 (11.d4 0-0–+) 11...Be6 12.Be2 0-0 13.0-0 de4 14.de4 Ne5 (14...Rd8 15.Rfd1–+) 15.Bb5 Rd8 16.Ne5 Rdd2 17.Nc4 (17.Nf3 Rdb2 18.c4 Bg4–+) 17...Bc4 18.Bc4 Rab2 19.h3 (19.g3 b5 20.Bd5 Rd3–+) 19...e6 20.Rb1 (20.Rcd1 Rd1 (20...Bc3?! 21.Rd2 Bd2 22.Bd3–+) 21.Rd1 Bc3 22.Rd8 Kg7–+) 20...Bc3 21.Bb5 (21.Rb2 Rb2 (21...Bb2?! 22.Rb1–+) 22.Bd3 Bd4–+) 21...Rf2! 22.Rb2 (22.Rf2 Rb1 Deflection (22...Rb1 Overloading)) 22...Rb2 (22...Rb2 23.Bd3 Bd4 24.Kh2 Be5 25.Kh1 b5–+) 0–1. andytop10 (1910) – diderot (1715), gameknot.com, 2015.

2.d3 e6 3.Bh6 gh6 4.c3 Qf6 5.Qb3 Nc6 6.Nd2 (6.d4!?+=) 6...Bb4=+ 7.Rc1 (7.cb4 Qd4) 7...Be7 8.Ngf3 b6 9.g3 Bb7 10.Bg2 0-0-0 11.0-0 (11.Qa4 a6=+) 11...d5 12.c4 Kb8 (12...Na5!? 13.Qa4 Bc6=+) 13.cd5= ed5 14.Qa4 a6 15.e4 (15.e3 d4=) 15...Nb4 (15...de4 16.Ne4 Qg6 17.Rc3=+) 16.e5= Qg6 17.d4 Bc6 18.Qb3 Bb5 19.Nh4 (better is 19.a3!? Nd3 20.Rc3=) 19...Qd3 20.Rfd1? (better is 20.Qb2!?–/+) 20...Qb3–+ (20...Qd4 21.Ndf3 Qe4 22.Rd4+=) 21.Nb3 (21.ab3 Bh4 22.gh4 Be2–+) 21...Na2 22.Ra1 Nc3 23.Rd2 Ne2 (24.Kh1 Bb4–+) 0–1. pietshaq (1715) – jaskier (2175), internet, 2007.

2.d4 b6 3.Nc3 (3.e4 Bb7 4.Bd3 e5 5.de5 Bb4 6.c3 Bc5 7.Bh6 gh6=) 3...d6 (3...Ng8 4.a3+=) 4.Nf3 Nf5 (4...g6 5.e4+=) 5.e4 Nd4? (better is 5...Nh6+/–) 6.Nd4+– g6 (6...a6 7.Bg5+–) 7.Bg5 (7.Qf3 Bg7 8.e5 c6 9.Nc6 Nc6+–) 7...h6 8.Bh4 g5 9.Bg3 h5 (9...Bg7 10.Bc4+–) 10.h4 g4 11.Bc4 Bg7 12.0-0 Na6 (12...e6 13.Re1+–) 13.Bb5 (13.Bd5 c5 14.bc5 bc5+–) 13...Kf8 14.Nd5 1–0. pierre – zestforlife, internet, 2008.

2.d4 Nc6 3.b5 Na5 4.Bd2 Nc4 5.e4 (5.Bh6!? gh6 6.e4+=) 5...Nd2= 6.Nd2 e6 7.Ngf3 g6 (7...Bb4 8.Rb1 Bc3 9.Rb3+=) 8.e5 b6 (8...d6 9.Ne4+=) 9.Bd3 Bb7 10.0-0 a6 11.ba6 Ba6 12.Ba6 Ra6 13.Ne4 Ng4 14.h3 Qa8 (14...f5 15.Ned2 Nh6 16.Qe2+=) 15.Nfg5 (< 15.hg4 Qe4 16.Ng5 Qf4=) 15...Bg7?? (better is 15...h6 16.Qg4 hg5 17.Nf6 Kd8 18.Qg5 Be7+=) 16.Qg4+– (16.hg4?! h6 17.Nf7 Kf7 18.Qf3 Ke8+/–) 16...0-0 (16...Ra2 17.Ra2 Qa2 18.Qf3+–) 17.Nf6 (17...Bf6 18.ef6 Ra2 19.Ra2 Qa2 20.Nh7+–; 17.Qh4 h6 18.Nf6 Bf6 19.ef6 hg5+–) 1–0. Rossbach – Scott, corr SOK–88–21, 1988.

2.d4 Ng4 3.e4+= d6 4.Nf3 Nf6 5.Nc3 c6 6.a3 Bg4 7.h3 Bh5 8.Bd3 e6 9.0-0 Be7 10.Qe2 d5 11.e5 Nfd7 12.Qe3 (12.Bf4 Bg6+=) 12...a5 13.Bd2 ab4 14.ab4 Na6 15.Na2 Nc7 16.Rfb1 Ra7 17.Nc1 Qa8 18.Nb3 b6 19.Ra7 Qa7 20.Ra1 Qb7 21.c3 c5 22.bc5 bc5 23.Nc5 (23.dc5? Qb3 24.Nd4 Qb2–+) 23...Nc5 24.dc5 0-0 25.Rc1 Rc8 (26.c4 dc4 27.Rc4 Nd5=). Alissa – London_Patzer, ChessWorld.net, 2005.

2.e3 a6 3.Nf3=.

2.e3 e6 3.a3 (3.Bb2 Nf5= (3...Bb4? 4.Bg7 Rg8 5.Bh6+–)) 3...d5 4.h3 (4.Bb2 a5=) 4...c5 (4...a5!? 5.b5 Bd6=) 5.Bb2+= cb4 6.ab4 a6 (6...Nf5 7.Nf3+=) 7.b5 (7.Nf3 Nf5+/–) 7...Nf5 8.ba6 (8.Nf3 Nd7+/–) 8...ba6 9.Nf3 Nd7 (9...Nc6 10.Nc3+=) 10.g3 (10.Nc3 Rb8 11.Rb1 Nc5+=) 10…Nf6. assad_ia – ANZARBOND (1655), internet, 2009.

2.e4 a6 3.Nc3 (3.d4 d5 4.Bh6 gh6 5.ed5 Qd5+=) 3...c6 (3...e5 4.a3=) 4.Nf3 f6 (4...e6 5.a3+=) 5.d4+/– e6 6.a3 Ng4 (6...Nf7 7.Bd3+/–) 7.h3 Nh6 8.Be2 (8.Bh6 gh6 9.e5 d5+/–) 8...Nf7 9.0-0 h6 (9...d5 10.Re1+=) 10.Nh4 e5 (10...g5 11.Ng6 Rg8 12.Nf8 Rf8 13.Be3+/–) 11.Ng6+– Rg8 12.Bc4 d5 (12...ed4 13.Qd4 b5 14.Bb3+–) 13.ed5 b5 14.Ba2 Bd6 15.Qd3 f5? (15...Qc7+–) 16.de5 Ne5 (16...Bf8 17.Bf4 Nh8 18.Qg3+–) 17.Re1 Bb7 (17...Qc7+–) 18.Ne5 Be5 19.Re5 Kf7 20.dc6 (20.dc6 Qd5 21.Qf5#) 1–0. pierre (2090) – TikTakToe, Tuebingen internet, 2012.

2.e4 f6 3.Bc4 e6 4.a3 c6 (4...a5 5.b5 f5 6.e5=) 5.Bb2 d5 6.Bd3 e5 7.ed5 (7.Nf3!?+=) 7...cd5= (worse is 7...Qd5 8.Nf3+/–) 8.c4 Be6 9.Qe2 Bd6 (9...a5 10.cd5 Qd5 11.Nc3=) 10.Nf3+= Qd7 (10...dc4!? 11.Bc4 Qc8 12.Be6 Qe6+=) 11.cd5+/– Bd5 12.Nc3 Be6 13.Bb5 Nc6 14.d4 a6 15.de5 ab5 16.ed6 Qd6? (better is 16...0-0 17.Nb5 Bh3 18.Qc4 Be6+/–) 17.Nb5+– Qe7 18.Nfd4 Kf7? (better is 18...Nd4 19.Bd4 0-0+–) 19.Qe6 Qe6 20.Ne6 Ke6 21.Nc7 Kf5 22.Na8 Ra8 (22...Re8 23.Kd1 Ra8 24.Kc2+–) 23.0-0 Nf7 24.Rad1 Nfe5 (24...Nce5 25.Bc1+–) 25.Rfe1 (25.b5 Ne7+–) 25...h5 (25...Nc4 26.Bc1+–) 26.h4 (better is 26.b5 Na5 27.Be5 fe5 28.Rd7+–) 26...g6?? (26...Nc4 27.Bc1 Na3+–) 27.Rd6 (27.f4 Kf4 28.b5 Kf5+–) 27...Re8 (27...Rd8 28.Rd8 Nd8 29.Be5 fe5 30.Rd1+–) 28.Kf1 (better is 28.f4 Nf3 29.gf3 Re1 30.Kf2 Re6 31.Rd5 Ne5 32.fe5 fe5+–) 28...Rc8 (28...Re7 29.f4! Nc4 30.Rf6 Kg4 31.Rg6 Kf4 32.Bc1 Kf5 33.Rg5 Kf6 34.Re7 Ke7 35.Rh5+–) 29.Rc1 (better is 29.f4 Re8+–) 29...Re8 30.Rc5 g5 (30...Re6 31.Re6 Ke6 32.Be5 fe5 33.Rc6 bc6 34.Ke2+–) 31.hg5 fg5 (31...Kg5 32.g3 Kg4 33.b5+–) 32.b5 (better is 32.Rdd5 Kf6+–) 32...Na5 (32...b6 33.Rcc6 Nc6 34.bc6+–) 33.Rdd5 Kf4 (33...Nb3 34.Re5 Re5 35.Re5 Kg6+–) 34.Be5 Kg4 35.Bg3 Rg8 (35...Re5 36.Re5 Nc4 37.Rc4) 36.Rd4 1–0. andytop10 (1915) – pukism (1735), gameknot.com, 2015.

2.Nf3 a6 3.Bb2 Nc6 4.a3 d5 5.g3 (5.e3 Bf5=) 5...d4 6.d3 g6 (6...e5 7.Bg2=) 7.Bg2 Bg7 8.0-0 0-0 9.Nbd2 Nf5 10.Nb3 Rb8 11.Qd2 Bh6 12.Qd1 Bg7 13.Rc1 Qd6 (13...e5 14.c3=) 14.c3 dc3 15.Bc3 Bc3 16.Rc3 Be6 (16...e5!?+=) 17.Nc5+/– a5 18.b5 (18.ba5 Na5 19.Ne6 fe6+/–) 18...Ncd4+= 19.Nd4 (19.a4 Nf3 20.Bf3 Nd4+=) 19...Nd4 20.e3 (20.Nb7 Qb6 21.e3 Rb7 22.a4+= (< 22.Bb7 Nb5 23.Rc1 Qb7–+)) 20...Nb5=+ 21.Rc1 c6 22.a4 Nc7 23.Qd2 Rfd8 24.d4 (24.Qa5? b6 25.Qa7 bc5 26.Qc5 Qd3 27.Bc6 Bh3–+) 24...Bf5 25.Rc3 (25.Qb2!? b6 26.Nb3=) 25...e5–/+ 26.Rd1 ed4 27.Rc4 d3 28.Rd4?? (better is 28.Nb3–/+) 28...Qc5–+ 29.Rd8 Rd8 30.e4 Be6 31.h4 Qc2 32.f4 Bg4 (33.Qc2 dc2 34.Rd8 Kg7–+) 0–1. yaunootz (1640) – jaskier (2250), internet, 2007.

2.Nf3 e6 3.a3 b6 (3...d5 4.Bb2=) 4.d3 (4.d4 Bb7+=) 4...g6 (4...a5 5.b5+=) 5.Bb2 Rg8 6.e4 Bb7 7.Nbd2 f5 8.Be2 g5 (8...c5 9.c3 Kf7+/–) 9.g3 (9.0-0 Bg7 10.Nd4 g4+=) 9...Be7 (9...g4 10.Nd4=) 10.0-0 g4 11.Ne5 Bf6 (11...a5 12.ba5 d6 13.Nec4+=) 12.ef5 d6 13.Nec4 Bb2 14.Nb2 ef5 (better is 14...Qf6 15.Nbc4 Qf5=) 15.f4 (better is 15.d4+=) 15...Qf6–/+ 16.Nbc4 (16.Re1 Qd4 17.Kf1–/+) 16...Qd4= 17.Rf2 Qd5 18.Nf3 Nd7 19.Qe1? (better is 19.Ncd2=+) 19...0-0-0–+ 20.Ne3 (20.Qc3 Rde8–+) 20...Qe6 21.Nh4? (21.Ng2 gf3 22.Bf3–+) 21...Qe3 22.Bf1 (22.Qc3 d5–+) 22...Qe1 (22...Rge8 23.Qe3 Re3 24.Re2 Re2 25.Be2–+) 23.Re1 Rde8 24.Rfe2 Kd8 25.Bg2 Bg2 26.Kg2 Re2 27.Re2 Re8 28.Kf2 (28.Re8 Ke8 29.b5 Nc5–+) 28...c5 29.c3 (29.b5 d5–+) 29...d5 (29...a6 30.Re8 Ke8 31.Ke3–+) 30.b5 Re2 (30...d4 31.cd4 cd4 32.Re8 Ke8 33.Ng2–+) 31.Ke2 Nf6 32.Ng2 Kd7 33.Ne3 Ke6 34.a4 Nf7 35.Nd1 (35.Nc2 h6–+) 35...h5 (35...d4 36.Kd2–+) 36.Nf2 (36.Ne3 Nd6–+) 36...Nh8 (36...d4 37.cd4 cd4 38.h3–+) 37.h4 d4 38.c4 Nf7 39.Nd1 Nd6 40.Kd2 Nb7 41.Nb2 Nd6 (41...Kd6 42.Nd1–+) 42.Nd1 Nde4 (42...Nd7 43.Nf2–+) 43.de4 fe4 (43...Ne4!? 44.Ke1–+) 44.Ke2 Ne8 0–1. Jatkowski – Van Esbroeck, corr WCCF–SOK–1, 1995.

2.Nf3 g6 3.Bb2 f6 (--> 1.b4 g6 2.Bb2 f6 3.Nf3 Nh6).

2.g3 e5 3.Ba3 Na6 4.Bb2 Nb4 5.Be5 d5 6.e3 f6 7.Bd4 Bd6 8.h3 Bf5 9.Bd3 Bd3 10.cd3 Nd3 11.Kf1 Qd7 12.f3 Bg3 13.Ne2 Nf2 14.Ng3 Nd1 15.Nc3 Nb2 16.Nh5 Qe6 17.Ng7 Kf7 18.Ne6 Ke6 19.a4 a5 20.Nb5 Rac8 21.Rh2 Rhg8 22.Nc3 Nf5 23.Rg2 Ng3 24.Kg1 c5 25.Rc1 cd4 26.h4 dc3 27.dc3 Ne2 28.Kh1 Rg2 29.Kg2 Nc1 30.h5 Rc3 31.f4 Re3 32.h6 Na4 33.f5 Kf5 34.Kf2 d4 35.Kg2 Kg4 36.Kf2 Nd3 37.Kg2 b5 38.Kh2 b4 39.Kg1 b3 40.Kg2 b2 41.Kh2 b1Q 42.Kg2 Ne5 43.Kh2 Qc2 44.Kh1 Re1# White king mated 0–1. huskerbacker – BLUEMOONIE, ChessWorld.net, 2012.

2.h3 d5 3.d4=.

2.h3 e6 3.e4 (3.Bb2 d5= (3...Bb4? 4.Bg7 Rg8 5.Bh6+–)) 3...Bb4 4.c3 Bc5 (4...Be7 5.d4+=) 5.Bc4 (5.d4 Be7=) 5...Qf6 (5...Qh4!? 6.Qe2 Qg5+=) 6.d4+= Bb6 7.Nf3 (7.Qf3 Ng8=) 7...0-0 (better is 7...Qg6!? 8.0-0 Qe4+=) 8.Bd3+= d6 (8...Qe7 9.Bh6 gh6 10.Qd2+=) 9.Bg5 (9.g4 Qd8 10.g5 Nf5 11.ef5 ef5+–) 9...Qg6 10.e5 f5 11.ef6 Nf5? (better is 11...Qe8+/–) 12.g4 +– Nc6 +–. RaymundG – chessdoctor79, internet, 2010.

2.a3 d5

3.e3 e5 4.d4 Nd7 (4...a5 5.b5 Bd6 6.Nc3=) 5.Nc3 c6 6.Nh3 (6.e4!? Qe7 7.Nge2 de4 8.Bh6 gh6 9.Ne4=) 6...Bd6 7.Be2 (7.e4 Nf6 8.ed5 ed4 9.Bh6 gh6 10.Qd4 Qe7 11.Be2 Bh3 12.gh3 Be5=) 7...Nf5 (7...Qf6 8.Ra2–/+) 8.0-0 Nb6 9.de5 (9.Qd2 Qf6–/+) 9...Be5–/+ 10.Bb2 d4 (10...Qc7 11.Bd3–/+) 11.Nb1? (11.ed4 Nd4 12.f4 Bf6= (12...Ne2? 13.Qe2 Qd4 14.Rf2+–)) 11...Qd5 (11...Na4 12.Bd4 Nd4 13.ed4 Qd4 14.Ra2 Bh3 15.Qd4 Bd4 16.gh3–/+) 12.Bd3 (better is 12.ed4 Nh4 13.f3 Bh3 14.de5 (worse is 14.gh3 Bf6–/+) 14...Bg2 15.Rf2=) 12...Ne3?? 13.Qf3?? Qf3–+ 14.gf3 Bh3 15.Rc1?? Ned5 16.Re1 f6 17.Bd4 Nd7 18.Be5 fe5 19.Nd2 0-0 20.c4 Nf4 21.Bb1 Rae8 22.Ne4 Re6 23.Ng5 Nf6 24.Ne6 Ne6 25.Re5 Nd4 26.Re3 Nh5 27.Ra2?? Nf4 28.Be4 Rd8 29.a4 Nde2! 30.Rae2 Ne2 The nicest combinations are those leading to mate 31.Re2 Rd1 (31...Rd1 32.Re1 Re1) 0–1. heathen68779 – coolerdude, ChessWorld.net, 2003.

3.Nf3 Bf5 4.d3 (4.Nc3 e6=) 4...e6 (4...a5 5.b5 Nd7 6.h3=) 5.Bh6 (5.Bb2!?=) 5...gh6=+ 6.Nbd2 Bg7 7.d4 Nd7 8.c4 e5 (8...0-0 9.cd5 ed5 10.Qb3=+) 9.cd5 ed4 10.Rc1 Nb6 11.Nb3 d3 12.Nbd4 Be4 (12...Qd5!? 13.Rc5 Bd4 14.Rd5 Bc3 15.Nd2 Nd5 16.ed3 0-0-0=) 13.e3+=. Panza (2215) – Klaus Behrmann (2220), ChessWorld.net, 2004.

2.Bb2 Nc6

3.a3 a5 4.Bc3 (4.b5 Nb8+=) 4...b6 (better is 4...ab4!? 5.ab4 Ra1 6.Ba1 Nb4=+) 5.b5+= Na7 6.a4 (6.e3 Bb7 7.Nf3 Nc8=) 6...e6 (6...Bb7 7.Nf3=) 7.g3 (7.e3 Bb7=) 7...Bb7 (7...d5 8.Bg2=) 8.f3 (8.Nf3 f6=) 8...f5 (better is 8...f6=+) 9.h3?? (9.Bg2 d5=) 9...Rg8?? (9...Bd6 10.Bg2–+) 10.Bg2? g6 11.h4 Qb8 12.Nh3 Bc5 13.d4 Bd6= 14.Nd2 Bg3–+ 15.Kf1 Bh4 16.Nc4 Bd5 17.Qd3 Qb7 18.e4 Bc4–/+ 19.Qc4 0-0-0 20.e5 g5 21.f4=+ d5?? 22.Qd3 Rde8 23.fg5= Rg5 24.Ng5+/– Bg5 25.Rh5 Rg8 26.Ke2 c6 27.Qg3?? Qe7?? 28.Rg1?? cb5? 29.Bf3?? Rg6?? 30.Qh2?? Ng4 31.Qg2?? h6 32.Bg4=+ fg4 33.Qh2? Qg7 34.Rg4 ba4 35.Bd2 Nb5?? 36.Kd3?? a3 37.Qg1 Kc7 38.Bg5–/+ hg5 39.Rhg5?? Rg5–+ 40.Rg5 Qf8 41.Rg7 Kc6 42.Qg6 Qf3 43.Kd2 Qf2 44.Kd3 Qd4 45.Ke2 Qe5 46.Kd1 Nc7 47.Qf7 a2 48.Qd7 Kb7 (49.Qc7 Qc7 50.Rc7 Kc7–+) 0–1. Gregor123 – chiha, mySchach.de, 2004.

3.a3 d5=.

3.a3 d6 4.Nf3 (4.b5 Ne5=) 4...Bd7 (4...e5 5.e4=) 5.Nc3 (5.b5 Nb8+=) 5...g6 (5...e5 6.e4=) 6.Nd5+= Rg8 (6...f6 7.e4+=) 7.e4 (7.b5 Na5 8.e4 g5+=) 7...Bg7 8.Bg7 Rg7 9.d4 (9.b5 Ne5+=) 9...e6 10.Nc3 Qe7 (10...g5 11.Qd2 Ng8 12.b5+=) 11.Qd2 Ng8 12.b5 Nd8 (12...Nb8 13.Bc4+=) 13.Bd3 (13.e5 de5 14.de5 f6+–) 13...f5 (13...g5 14.0-0+–) 14.0-0 Rf7 (14...Nf7 15.Rfe1 0-0-0 16.Qe3 fe4 17.Ne4+–) 15.ef5 (15.e5 Rf8+–) 15...gf5+– 16.Rfe1 Kf8? (better 16...c6+–) 17.Nd5!!+– ed5 18.Re7 Re7 (18...Ne7 19.Re1+–) 19.Nh4 (19.Qf4 Rg7+–) 19...Nf7 20.Bf5 (20.Nf5 Bf5 21.Bf5 Nf6+–) 20...Nfh6 (20...Bb5 21.Bh7 Re2 22.Qc3+–) 21.Bd7 Rd7 22.Qg5 Re8 (22...c6 23.Re1+–) 23.Qd5 b6 24.h3 (24.c4 Nf6 25.Qg5 Nhg8+–) 24...Rf7 (24...Nf6 25.Qg5 Nhg8 26.Nf5+–) 25.Qh5 Re6 (25...Re4 26.Rd1+–) 26.g4 (26.c4 Kg7+–) 26...Ref6 (26...Rf4 27.c3+–) 27.Qd5 (27.Re1 Rf4 28.Re6 Kg7+–) 27...Rf2 (27...Rf4 28.Ng2 Rf2 29.g5+–) 28.g5 R2f5 (28...Nf5 29.Qa8 Kg7 30.Kf2 Nh4 31.Ke2 Nf3+–) 29.Qa8 (29.Qa8 Kg7 30.gh6 Nh6 31.Nf5 Nf5 32.Rf1+–) 1–0. Janek – enoli, internet free game, 2017.

3.a3 e5 4.e3 Nf5 5.Bc4 d5 6.Bb3 Be6 7.Ne2 Bd6 8.Nd4 ed4 9.ed4 Qe7 10.0-0 0-0-0 11.Re1 h5 12.Bd5 Qh4 13.Be6 fe6 14.d5 Qh2 15.Kf1 Qh1 16.Ke2 Qg2 17.d3 Ncd4 18.Bd4 Nd4 19.Ke3 Qd5 20.Kd2 Bf4 21.Kc3 Nb5 22.Kb2 Be5 23.c3 Qc6 24.Re5 h4 25.Rh5 h3 26.Rh8 Rh8 27.Nd2 Qc3 28.Kb1 Qd3 29.Kc1 h2 30.Qh1 Qc3 31.Kb1 Qd2 White resigned 0–1. greenbook (1720) – Tony_Farrell (1755), ChessWorld.net, 2011.

3.b5 Na5 4.d3 d5 5.Nf3 a6 6.a4 b6 7.Nbd2 ab5 8.ab5 Qd7 9.c4 dc4 (9...f6 10.g3+=) 10.dc4 f6 11.e3 e5 12.Be2 Bb4 13.Qc2 0-0 14.0-0 Rd8 15.Rfd1 Kh8 (15...Qf5 16.e4 Qg6 17.Ra4 Bd2 18.Rd2 Rd2 19.Qd2+=) 16.Nb3+/– Qe8 17.Rd8 Qd8 18.Ra4 Qe7 19.c5! Bf5 (19...Bc5 20.Nc5 Combination; 19...bc5 20.Bd3 Decoy) 20.e4 Be6 21.Rb4 Nb3 22.Rb3 Bb3 23.Qb3 Qc5 24.Nd2 Qd6 25.Nb1 Ra7 26.Bc4 f5 27.Qc2 fe4 28.Qe4 Qd1 29.Bf1 Ng4 30.Qf5 Ra8 31.h3 Nh6 32.Qe5 Qd7 33.Nd2 Nf5 34.Nf3 Re8 35.Qf4 Nd6 36.Bd3 Kg8 37.Qg5 Qf7 38.Qh4 Nf5 39.Qb4 Qf8 40.Qc4 Kh8 41.Ne5 Nh6 42.Qe4 Nf5 43.Qf5 Qf5 44.Bf5 Rf8 45.Bd7 Rf4 46.Bc3 Rf6 47.Bc6 Rf4 48.Nd7 Ra4 49.Be5 Ra7 50.Nb8 Ra2 51.Bc7 Ra1 52.Kh2 Ra2 53.Bb6 h6 54.Be3 Rb2 55.b6 Kg8 56.b7 Kf7 57.Nd7 Rb7 58.Bb7 Ke6 59.Nc5 Ke5 60.g4 Kf6 61.Be4 Kf7 62.f4 Ke7 63.f5 Kf7 64.Bd4 Kg8 65.Ne6 h5 66.gh5 g6 67.f6 Kf7 68.Ng5 Ke8 69.Bc6 Kd8 70.Bb6 Kc8 71.f7 gh5 72.f8Q 1–0. Fournier,Frederic (2080) – ZZZZZZtrainer (2000), Active (2/12), 2005.

3.b5 Na5 4.e3 Nc4?? (better 4...d5=) 5.Bc4+– 1–0. DEFFM – GuestNCWX, freechess.org, 2018.

3.b5 Nb4 4.Nf3=.

2.Bb2 d5

(--> 1.b4 d5 2.Bb2 Nh6).

3.e3 e6 (--> 1.b4 d5 2.Bb2 e6 3.e3 Nh6).

2.Bb2 d6

(--> 1.b4 d6 2.Bb2 Nh6).

2.Bb2 f6

(--> 1.b4 f6 2.Bb2 Nh6).

3.b5 g6 (--> 1.b4 g6 2.Bb2 f6 3.b5 Nh6).

3.e3 g6 4.Nf3 Bg7 (--> 1.b4 g6 2.Bb2 f6 3.e3 Bg7 4.Nf3 Nh6).

2.Bb2 g6

3.Bh8 f6 4.c3 Kf7 (4...Nf7 5.Bf6! ef6 6.Nf3+–) 5.Qb3 Ke8 6.e3 e6 (6...Nf7 7.Bf6! ef6 8.Bc4+–) 7.h4 (7.Qc4 Nf7 8.Qh4 Nh8 9.Qh7 Nf7 10.Qg6 Nc6+–) 7...Kf7 (7...Nf7 8.h5 Nh8 9.hg6+–) 8.h5 (8.g4 Ng4 9.h5 gh5 10.Rh5 Kg8+–) 8...Kg8 (8...g5 9.Bd3 Kg8 10.Qc2 Kh8 11.Bh7+–) 9.hg6 Kh8 10.Bd3 (10.Qc2 e5+–) 10...Nc6 (10...hg6 11.Bg6 Kg7 12.Qc2+–) 11.gh7 Bg7 (11...a5 12.b5 Ne5 13.Qc2+–) 12.Nf3 Nf5 (12...f5+–) 13.Bf5 ef5 (13...d5 14.Bc2+–) 14.Qf7 (better 14.Nh4 Ne5 15.f4 d5 16.fe5 Bh6+–) 14...d6 (14...Qf8 15.Qh5+–) 15.Nd4 (better 15.Nh4 Ne5 16.d4+–) 15...Ne5 16.Qg6 (16.Qh5 f4+–) 16...Qf8 (better 16...Ng6 17.a3 f4–+) 17.Qg3+– Ng6 (17...c5 18.Ne2 Nd3 19.Kd1+–) 18.Na3 (better 18.Qg6 f4+–) 18...Ne5 19.Nac2 f4 (19...c5 20.Ne2+–) 20.ef4 Nc4 21.0-0-0 Qf7 22.Rh3! Bd7 (22...Bh3 23.Qh3 Combination) 23.Rh2 Bc6 (23...Nb6 24.a3+–) 24.Rdh1 (better 24.Nf5 Bf8+–) 24...Na3 (24...a5 25.Nf5 ab4 26.Nb4 Nd2 27.Nh4+–) 25.Nf5 (better 25.Na3 Qa2 26.Nac2+–) 25...Qa2 (25...Nc2 26.Qg7 Qg7 27.Ng7 Na3+–) 26.Na3 (26.Qg7) 26...Qa1 (26...Qa3 27.Kd1 Qa1 28.Ke2 Qa6 29.b5 Re8 30.Ne3 Qb5 31.d3 Qb2 32.Kf1 Qc1 33.Ke2 Qc2 34.Ke1 Qd3–+) 27.Kc2 (better 27.Nb1 Qb1 28.Kb1 Be4 29.Kb2 Bf5+–) 27...Ba4 (27...Qa2 28.Kd3 Qd5 29.Ke2 Qf5+–) 28.Kd3 Qa3 (28...Bh6 29.Rh6 Bc2 30.Nc2 Qa6 31.c4 Qc4 32.Kc4 b5 33.Kd3 a5 34.Qg7) 29.Ra1 (29.Ra1 Bb5 30.Kc2 Ba4 31.Kd3 Bb5 32.Kc2 Ba4 33.Kd3=; 29.Qg7) 1–0. Agiant – merriman_bt, lichess.org, 2019.

3.Bh8 f6 4.e3 Nf7 5.Bf6! ef6 6.Nf3 (6.a3 d5+–) 6...Nd6 (better 6...Bb4 7.a3 Be7+–) 7.a3 Bg7 (7...a5 8.b5+–) 8.Be2 f5 9.c3 b6 10.0-0 Bb7 11.d4 g5 12.Ne5 Ne4 (12...Qe7 13.Nc4+–) 13.f4 (13.Ba6! Bd5 14.Bb7 Bb7 15.Qh5 Ke7 16.Qf7 Kd6 17.Qg7 Qf6 18.Qh7 g4+–) 13...gf4 (13...g4 14.Qb3 Qe7 15.Qg8 Bf8 16.Bd3+–) 14.Rf4 Ng5 (14...Qf6+–) 15.Bh5 Nf7 (15...Ke7 16.Rf5 Bf6+–) 16.Bf7 Kf8 (16...Ke7 17.Rf5 Qh8 18.Bc4+–) 17.Rf5 d6 (17...Ke7 18.Qh5 Qh8 19.Bb3+–) 18.Bd5 (18.Qh5 Qf6 19.Rf6 b5 20.Bd5 Ke7 21.Re6 Kd8 22.Re8) 18...Bf6+– 19.Bb7 Nd7 20.Nd7 Qd7 21.Rf6 (better 21.Qh5 Qf7 22.Qf3 Kg7 23.Ba8 c5+–) 21...Ke7 22.Qf3 Rf8 23.Rf8 Qe6 (23...Qe8 24.Qf6 Kd7 25.Re8 Ke8 26.Bc6) 24.Bd5 Qh6 (24...Qd5 25.Qf6 Kd7 26.Qd8 Kc6 27.Qe8 Kb7 28.b5 Qb5 29.Qc8 Kc6 30.Qa8 Kd7 31.Qe8) 25.Qf7 1–0. Abdullaevich (1775) – JohnPretender, lichess.org, 2019.

2.Bb2 Rg8

3.a3 f5 4.e3 Nf7 (4...d6 5.Bc4 d5 6.Be2+=) 5.Bc4 (5.Qh5!?+/–) 5...d5+= 6.Bb3 e5 7.Nf3 c6 (7...Qd6 8.d4 e4 9.Ne5+=) 8.0-0 (8.Ne5!? Qh4 9.0-0+/–) 8...Qc7 9.d4 (9.c4 Bd6+=) 9...e4= 10.Nh4?? (better is 10.Nfd2=) 10...g5–+ 11.Qh5 gh4 12.Qh7?? (12.c4 h3 13.g3–+) 12...Nh6 (better is 12...Rh8 13.Qg6 Rh6 14.Qh6 Bh6–+) 13.Bc1 (better is 13.Qc7 Na6 14.Qh7+–) 13…Qh7–+ (14.f4 ef3 15.Rf3 Qg6–+) 0–1. tromar (1840) – weinott, GameColony.com, 2002.

3.b5 g5 4.a4 b6 (4...d5 5.e3=) 5.c4 (5.Nc3 Bg7+=) 5...Bb7= 6.e3 e6 7.Nf3 (7.Ne2 a6=) 7...g4 8.Nd4 Bg7 9.Nc3 c5 10.Nc2 d5 (10...d6 11.d4=) 11.cd5+= ed5 12.d4 Nd7 13.Qd2 (13.Be2 Rc8+=) 13...Qc7 (13...Nf6+=) 14.0-0-0 (better 14.dc5!? Qc5 15.a5+–) 14...0-0-0 (14...Nf6 15.Qe1=+) 15.Kb1= Kb8 16.Rc1 Nf6 17.g3 Ne4 (17...Qd7 18.h3=) 18.Ne4= de4 19.Bc4 (19.h3 gh3 20.Qe1 Qe7=) 19...Nf5 20.d5 (20.Rhd1 Nd6 21.Be2 f5=+) 20...Nd6 (20...Bb2 21.Kb2 Ne7 22.d6 Rd6 23.Qe2–/+) 21.Na3 (21.Ba2 Bb2 22.Kb2 Rg5–/+) 21...Bb2 (21...Nc4 22.Nc4 Bd5 23.Bg7 Rg7 24.Qc3–/+) 22.Kb2 (22.Qb2 Nc4 23.Nc4 Bd5–/+) 22...f5 (22...Nc4 23.Nc4 Bd5 24.Qc3–+) 23.Rcd1 (23.Bb3 Nf7 24.Kb1 Ne5–/+) 23...Qg7 (23...Nc4!? 24.Nc4 Bd5 25.Qc3–+) 24.Qc3–/+ Qc3 (better 24...Nc4!? 25.Nc4 Bd5 26.Qg7 Rg7–/+) 25.Kc3= h5 26.h3 Rdf8 (26...Rg7 27.hg4 hg4 28.Bb3=) 27.hg4 (27.Bb3 Rh8+=) 27...fg4= 28.Rd2 Rg5 29.Rh2 (29.Bb3 Kc7=) 29...Rgf5 (better 29...Rff5!?–/+) 30.Bb3= R8f6 31.Nc4 (31.Kc2 a6=) 31...Nc4 (31...Kc7 32.Na3–/+) 32.Bc4=+ Rd6 Can d5 get defended? (32...Kc8 33.Rh1=+) 33.Rh1= Kc7 (worse 33...Bd5 34.Ba2+–) 34.Re1 Rdf6 (34...Kd7 35.Ra1=+) 35.Ree2 (35.Rh1 Kd6=+) 35...Rd6 (35...Kd7 36.d6–/+) 36.a5 (36.Re1!?=) 36...Rdf6 (36...Bd5!? 37.a6 Kd7–+) 37.a6=+ Ba8 38.Re1 (38.Rd1=+) 38...Rd6 (better 38...Rf2!? 39.d6 Kd7–/+) 39.Red1= Rdf6 40.d6 (40.Re1 Rf2 41.d6 Kd7 42.Rf2 Rf2–/+) 40...Kd8=+ 41.Rf1 Kd7 42.Rh1 (42.Rfd1 Rf2 43.Be6 Kd8 (43...Re6?? 44.Rf2 Rd6 45.Rf7 Ke6 46.Rd6 Kd6 47.Ra7+–; 43...Ke6 44.d7 Rd2 45.Rd2+–) 44.Rf2 Rf2+=) 42...Rd6–/+ (worse 42...Rf2 43.Rf2 Rf2 44.Rh5+–) 43.Rd6 (43.Rhd1 Rd2 44.Rd2 Ke7=+) 43...Kd6 44.Rd1 Ke7 (better 44...Bd5!?–/+) 45.Rd2=+ Rf6 46.Bf1 Rd6 47.Bg2 (47.Bc4!?=+) 47...Rd2–/+ 48.Kd2 Ke6 49.Kc3 Ke5 50.Kc4 Bd5 51.Kc3 Be6 52.Bf1 Bd7 53.Bc4 Be6 (better 53...Kf5–/+) 54.Be6?? (54.Bf1 Bg8 55.Be2–/+) 54...Ke6–+ 55.Kc4 Kd6 56.Kc3 Ke5 (56...Kd5!? 57.Kb3–+) 57.Kc4 Kd6 (better 57...Ke6–+) 58.f4?? (58.Kc3 Kd5 59.Kb3–+) 58...ef3 (58...gf3 59.Kb3 f2 60.Kc3 f1Q 61.Kd2 Qf2 62.Kc3 Qe3 63.Kc2 Qd3 64.Kc1 c4 65.Kb2 Qd2 66.Kb1 c3 67.Ka1 Qb2) 59.Kd3 f2 (better 59...Kd5 60.e4 Ke5 61.Ke3–+) 60.Ke4 (60.Ke2 c4 61.Kf2–+) 60…f1Q (60...Ke6 61.Kd3 f1Q 62.Kc2 Qe2 63.Kb3 c4 64.Kc3 Qd3 65.Kb2 Qd2 66.Kb1 c3 67.e4 Qb2) ½–½. BeepBeepImAJeep (2660) – AlanFord74 (2125), lichess.org, 2017.

3.b5 g5 4.c4 b6 5.a4 Bb7= 6.Nc3 e6 7.e3 Bg7 8.d4 Qe7 (8...a6 9.Nf3=) 9.Nf3 (9.a5 ba5 10.Ra5 e5 11.de5 Be5+=) 9...g4 10.Nd2 d6 (10...a6 11.a5+=) 11.Rg1 (11.a5 ba5 12.Nb3 a6+=) 11...Nd7 (11...Qh4 12.Rh1=) 12.Bd3 f5 13.Qc2 e5 (13...Qh4 14.Nf1=) 14.Nd5 (14.Bf5 ed4 15.Nd5 Bd5 16.Bd7 Qd7 17.cd5 de3 18.fe3 Bb2 19.Qb2 g3 20.hg3 Ng4=) 14...Bd5= 15.cd5 White gets strong initiative 15...e4 (better 15...ed4 16.e4 Nc5=) 16.Be2+– 0-0-0 (16...Kd8 17.a5+–) 17.Rc1 (17.a5 Kb8+–) 17...Nf6+– 18.a5 Nd5?? (better 18...Kb8+–) 19.Bc4 (better 19.Qc6+–) 19...Nf6?? (better 19...Nb4 20.Qa4 d5+=) 20.Bg8 Rg8 21.Qc6 Nd7?? (21...ba5 22.Nc4 Kd8+–) 22.Qa8 (22.Qc7) 22...Nb8+– 23.a6 (23.Qa7 Qf7 24.ab6 c6 25.bc6 Qa7 26.ba7 Nc6 27.a8Q Kd7 28.Qb7 Ke8 29.Rc6 Bf6 30.Rc7 Rg7 31.Qb5 Rd7 32.Qd7 Kf8 33.Qc8 Bd8 34.Qd8) 23...Kd7 (23...c5 24.bc6 Qc7+–) 24.Qa7 (better 24.Rc7 Kc7 25.Qa7 Kd8 26.Qb8 Kd7 27.a7+–) 24...Ke6 (24...Qd8+–) 25.Rc7 Nd7 (25...Qd8 26.Rg7 g3 27.hg3 Rg7 28.Qg7+–) 26.Ba3 (better 26.d5 Kd5 27.Rd7 Qd7 28.Qd7 Bb2 29.Qh7 Rh8 30.Qh8 Bh8+–) 26...Rd8 (26...Qd8 27.Bd6! Kd6 28.Nc4 Ke6 29.d5 Kf6 30.Rd7+–) 27.Nc4 Nf7 (27...g3 28.hg3 Ng4 29.Qb7+–) 28.Nb6 Bf6 (28...Nfe5 29.Qb7 Nd3 30.Kd2 Qh4 31.Rd7 Qf2 32.Kc3 Rd7 33.Qd7 Kf6 34.Nd5 Kg6+–) 29.Nd7 (29.d5 Ke5 30.Bb2) 29...Rd7+– 30.Rd7 Qd7 31.Qd7 Kd7 32.a7 (32.a7 Be7 33.a8Q+–) 1–0. BeepBeepImAJeep (2590) – partizan74 (2205), lichess.org, 2015.

3.b5 g5 4.c4 b6 5.a4 Bb7= 6.Nc3 e6 7.e3 Bg7 8.h3 (8.d4 a6+=) 8...d6 (8...Nf5 9.Nf3=) 9.Nf3 Nd7 (9...c5 10.Be2=) 10.Be2 Qe7 (10...f5 11.d4+=) 11.0-0 (11.a5 c5+=) 11...e5 (11...g4 12.hg4 Ng4 13.d4=) 12.Nh2 f5 13.Bh5 (13.a5 ba5 14.Ra5 a6+=) 13...Kd8 14.d3 g4 (14...a5 15.Bf3 Bf3 16.Nf3=) 15.hg4+= fg4 16.Bg4 (16.Ng4? Qg5–+) 16...Ng4 17.Ng4 (17.Qg4 Nc5 18.Rad1 a6+=) 17...h5 (17...e4 18.a5 (worse 18.de4 Bc3 19.Bc3 h5–/+) 18...Bc3 19.Bc3 ed3 20.f3=+) 18.Nh2+= Nc5 19.Nd5 (19.e4 Bh6 20.Kh1 Qg5+=) 19...Bd5= 20.cd5 Qh4 (20...e4 21.d4 Nd3–/+) 21.d4+= Ne4 (21...e4 22.Qc1 Nd3=) 22.de5 (better 22.Rc1+–) 22...Bf8? (better 22...Be5 23.Be5 de5+–) 23.e6+– Qh3 (23...Be7 24.Qc2 Nc5 25.f4+–) 24.Qf3 Qf3 25.Nf3 Ng5 (25...Bg7 26.Nd4 Ke8+–) 26.Ng5 Rg5 27.Bf6 Be7 28.Bg5 Bg5 29.f4 (29.a5 Bf6 30.Ra2 Rc8+–) 29...Bf6 30.Rac1 Ke7 (30...a6 31.Rc6+–) 31.Kf2 (31.Rc7 Ke8 32.Rf7 Bh4+–) 31...Rg8 (31...Kd8 32.Rg1 h4 33.g3 hg3 34.Kg3+–) 32.Rh1 (better 32.Rc7 Ke8 33.Rfc1+–) 32...h4 (32...c5 33.bc6 h4 34.c7+–) 33.e4 (better 33.Rc7 Ke8 34.Rc8 Bd8 35.Rh4+–) 33...Bd4 (33...Kd8 34.Rh3+–) 34.Kf1 Rg4 35.f5 (35.Rc7!? Kd8 36.Rf7 Ke8+–) 35...Re4 (35...Bc5 36.Rc4 Rf4 37.Ke2+–) 36.Rh3 (better 36.Rc7!? Kd8 37.Ra7 Be5+–) 36...Rf4 37.Rf3 Rf3 38.gf3 Kf6 (38...Kd8 39.Rc4 Bf6 40.Kg2+–) 39.Kg2 (39.Rc7 h3+–) 39...Kf5 (39...Ke7 40.Rc7 Ke8+–) 40.e7 Bf6 41.e8Q h3 (41...c5 42.Qh5 Bg5 43.Re1 h3 44.Kh2 Kf6 45.Re6 Kg7 46.Qg6 Kf8 47.Re8) 42.Kh3 Be5 (42...Be7 43.Qf7 Bf6 44.Qe6 Kg5 45.Rg1 Kh5 46.Qf5 Kh6 47.Qg6) 43.Qe6 (43.Qh5 Kf6 44.Rc7 a6 45.Rf7) 43...Kf4 (43...Kg5 44.Rg1 Kf4 45.Qh6 Kf3 46.Re1 Bf4 47.Qh5 Kf2 48.Qe2) 44.Rc4 (44.Qg4 Ke3 45.Qe4 Kf2 46.Qd3 c5 47.Rf1) 44...Kf3 (44...Ke3 45.Qf5 Bc3 46.Rc3 Ke2 47.Qc2 Ke1 48.Re3 Kf1 49.Qg2) 45.Qg4 Kf2 46.Rc2 (46.Re4 Bg3 47.Qg3 Kf1 48.Re1) 46...Ke3 47.Re2 Kd3 48.Qe4 Kc3 49.Rc2 Kb3 50.Qc4 Ka3 51.Ra2 1–0. BeepBeepImAJeep (2595) – partizan74 (2200), lichess.org, 2015.

3.Nc3 e5 4.Nf3 d6 5.e3 Bf5 6.Bc4 Nc6 7.Bb5 Qd7 8.0-0 a6 9.Bc6 Qc6 (< 9...bc6 10.e4 Bg4 11.h3 Bf3 12.Qf3+=) 10.d4 Bg4 11.e4 Bf3 12.Qf3 (< 12.gf3 Be7=+) 12...ed4 13.Nd5 a5 (13...Qc2? 14.Bd4 Kd8 15.Rfc1+–) 14.b5! Qc4 15.Bd4 Rc8 16.Qh3 Rb8 17.Qc3 Qc3 18.Bc3 c6 19.Nc7 Kd7 20.Ba5 Be7 21.b6 Bd8 22.Rfd1 Ng4 23.Bb4+– Bc7 24.bc7 Rbc8 25.Bd6 Ke6 26.a4 Nf6 27.e5 Nd5 28.c4 Nf4 29.Rdb1 Nd3 30.Rb7 Ne5 31.c5 Nc4 32.Re1 Kf5 33.Rb4 Na5 34.Re7 f6 35.h3 h6 36.Rf4 Kg6 37.Kh2 Ra8 38.Rg4 Kh7 39.Kg1 Kh8 40.Rb4 Kh7 41.Rbe4 Nb3 42.Kh2 Nd2 43.Rb4 f5 44.Rb6 Nf1 45.Kg1 Nd2 46.Bf4 Ne4 47.Rc6 Kh8 48.Rh6! gh6 49.Be5 Rg7 50.Rg7 Rc8 51.Rd7 Kg8 52.Rd8 Kf7 53.Rc8 Nc5 54.Rh8 Nd3 55.Bh2 Nc1+– 56.c8Q Ne2 57.Kh1 f4 58.Qd7 Kg6 59.Qe6 Kg5 60.Rg8 Kh4 61.Qh6# 1–0. GNUChess – GNUChess, 2000.

3.c4 Na6 4.b5 Nc5 5.Nf3 f6 (5...d6 6.d4 Ne4 7.Nc3 Nc3 8.Bc3+=) 6.d4+= Ne4 7.Nbd2 d5 8.e3 Bg4 9.cd5 Nd2 10.Qd2 Qd5 11.Be2 (11...Bf3 12.Bf3 Qb5 13.a4+=). Korner – Rettenbacher,W, corr SOK–87–08, 1988.

3.c4 d6 4.e3 e5 5.g3 (5.Nf3 Na6=) 5...g5 (5...Nc6 6.a3=+) 6.Qc2 (6.d4 d5=) 6...Bg7 (6...Nc6 7.d4=+) 7.d3 (7.d4 Be6=) 7...Nd7 (7...g4 8.Bg2=+) 8.Nd2 (8.Bg2 c6=) 8...f5 (8...a5 9.b5=+) 9.Bg2= Nf6 (9...Nf7 10.Ne2=) 10.f3 (10.Ne2 a5=) 10...Qe7 (10...f4 11.e4=+) 11.Ne2 Bd7 12.a4 (12.Rd1 0-0-0=+) 12...f4 (12...0-0-0 13.a5=+) 13.e4 Nf7 14.Nb3 (14.d4 ed4 15.Bd4 a5=) 14...Nd8 (14...0-0-0 15.d4=+) 15.b5 Ne6 16.d4 (16.a5 a6 17.b6 cb6 18.ab6 Qd8=+) 16...Nf8 (16...ed4 17.Nbd4 0-0-0 18.Nf5=) 17.d5 (17.a5 ed4 18.Nbd4 Ng6=) 17...b6 (17...Ng6!?=) 18.a5+= Qd8 (18...Ng6 19.0-0+=) 19.Kd2 (19.h4 h6+/–) 19...Kf7 (19...Ng6 20.g4=) 20.Ra2 (20.h4 Nh5 21.g4 Ng3 22.Ng3 fg3 23.hg5 Qg5 24.Kd1 Ke8+=) 20...Ng6 21.Rha1 Qb8 ½–½. Lais,Klaus Joerg – Rupprecht,Heinz, Saarland–chC, 1993.

3.c4 e5=.

3.e3 d5 4.Nf3+– c6 (4...Bg4 5.h3 Bf3 6.Qf3+–) 5.c4 e6 6.b5 dc4 (6...cb5 7.cd5 b4 8.a3 ed5 9.ab4 Bb4 10.Nc3+–) 7.Bc4 (7.Nc3+–) 7...Bd6 (7...a6 8.bc6 Nc6 9.d4+–) 8.Qc2 (8.Nc3!? a6 9.a4 Nf5+–) 8...Nf5 (8...a6 9.bc6 Nc6 10.Nc3+–) 9.Qe4 (9.Be2 cb5 10.e4 Nh6+–) 9...Nd7 (9...a6 10.bc6 Nc6+–) 10.h3 (better 10.bc6!? Nc5 11.Qc2 bc6 12.d4+–) 10...Nc5 11.Qc2 cb5 12.Bb5 Bd7 13.Bd7 Nd7 14.Ke2 (14.Nc3 Rc8+=) 14...Qc7 (14...Rc8!? 15.Nc3 Qb6+=) 15.Nc3+– g6 (15...Ne5 16.Ne5 Be5 17.g4+–) 16.Rhc1 Rc8 17.d3 (17.g4 Ne7 18.Qa4 Nc6+–) 17...a6 (17...Be7 18.Qd2 Qa5 19.Nb5 Qd2 20.Nd2+–) 18.Qa4 Qb8? (better 18...Qc6 19.Qc6 Rc6+–) 19.Ne4+– b5 (19...Rc6 20.Rc6 bc6+–) 20.Qa6 Ke7 (20...Rd8 21.g4 Be7 22.gf5 gf5 23.Ng3+–) 21.g4 Rc1 (21...Qa8 22.Qa8 Ra8 23.gf5 gf5 24.Nd6 Kd6 25.Bc3+–) 22.Rc1 Qa8 23.Rc6 Qa6 24.Ra6 Rc8 25.Ke1 (25.Bc3 Ne3 26.fe3 f5 27.gf5 ef5 28.Nd6 Rc3 29.Nb5 Rc2 30.Nd2 Rb2+–) 25...Nb8?? (better 25...Bb4 26.Kd1 Nd6+–) 26.Ra7 Rc7 (26...Kf8 27.gf5 Bb4 28.Kf1 ef5 29.Nf6+–) 27.Rc7 (better 27.Nd6!? Ra7 28.Nc8 Kd7 29.Na7 Nd6+–) 27...Bc7 28.Bf6 (28.gf5 Ba5 29.Ke2 ef5 30.Bf6 Kf8+–) 28...Kd7 (28...Kf8 29.gf5 gf5 30.Nc3+–) 29.gf5 ef5 30.Neg5 Nc6 (30...h6 31.Nf7 Ke6 32.Bd8 Bd8 33.Nd8 Ke7 34.Nb7+–) 31.Nd4 (31.Bc3 Bd6+–) 31...Nb4 32.Nb5 (32.Ke2 Nd5 33.Nh7 Nc3 34.Kd2 Na2 35.Nb5 Ba5 36.Kd1 Bb6+–) 32...Bh2 (32...Nd3 33.Kf1+–) 33.Kd2 Na2 34.Bc3 (34.Bb2 Nb4+–) 34...Ke7 (34...Nc3 35.Nc3 (worse 35.Kc3 Bg1+–) 35...h6 36.Nf7+–) 35.Nf3 (better 35.Bb2!? Kd7+–) 35...Nc3 36.Kc3 (36.Nh2?! Nb5 37.Nf3 h6=; worse 36.Nc3 Bb8+–) 36...Bb8 37.Kd4 f6 (37...Kf6 38.Nc3+–) 38.Kd5 (better 38.Kc5 Kd7 39.Kd5 f4+–) 38...g5 (38...Kd7+–) 39.Nbd4 g4 1–0. Kasper,Peter – Fiedler,Wolfgang (1990), 7th Berlin Germany, Lichtenberger Somme, 2008.

3.e3 e6 4.b5 b6 (4...d5 5.Nf3=) 5.Be2 (5.Bd3 Bb7 6.Nf3 Nf5+=) 5...Bb7 (5...a6 6.Nf3+=) 6.Bf3 (6.Nf3 a6+=) 6...d5= 7.c4 g5 (7...a6 8.Qc2=) 8.g4 (8.h3 c6 9.cd5 cd5+=) 8...f5 (8...a6 9.d3=) 9.h3 (9.gf5 g4 (< 9...Nf5 10.Nc3=; < 9...ef5 10.Nc3+/–) 10.Bg2 Nf5=+) 9...Bg7 (9...a6 10.gf5 ef5 11.Nc3 ab5 12.Bd5 (< 12.Nb5 c6=+; < 12.cd5 b4–/+) 12...Bd5 13.Nd5= (< 13.cd5 b4–/+)) 10.d4 (10.Bg7 Rg7 11.d4 a6=) 10...Nd7 (10...a6!?=) 11.gf5+/– Nf5 (11...ef5 12.cd5 a6 13.Qc2+/–) 12.cd5 ed5 (12...Nh4 13.Bh5 Ke7 14.Ba3 Kf6 15.Qg4 Bd5 16.e4+–) 13.Bh5 (13.Qc2 Qf6+/–) 13...Kf8 (13...Ke7 14.Qg4 Ke6 15.Nf3+=) 14.Ba3+/– Nd6 15.Bd6 cd6 16.Qf3 (16.Bg4 a6+/–) 16...Qf6 17.Nc3 Qf3 (17...Nc5 18.Bg4+=) 18.Bf3 (18.Nf3 h6+/–) 18...Nf6+= 19.Nge2 Ne4 20.Ne4 (better is 20.Bg4!?+/–) 20...de4= 21.Bg4 Ke7 (21...a6 22.Bf5 ab5 23.Nc3=) 22.Ng3 d5 23.Rc1 Kd8 24.Nf5 (24.h4 gh4 25.Rh4 h6=) 24...Bf8= 25.Kf1 (25.f3 a6=) 25...Rc8 (25...a6 26.a4=+) 26.Kg2 (26.Ke2 Ba3 27.Rc8 Bc8=) 26...Ba3=+ 27.Rc8 Bc8 28.Nh6 Rf8 29.Bc8 Kc8 30.Ng4 Bd6 ½–½. Hammerman – Van Esbroeck, corr WCCF–SOK–1, 1995.

3.e4 d5 4.ed5 Qd5 5.Nc3 Qe6 6.Qe2=.

3.e4 d6 4.d4 g5 5.Bc4 e6 6.Nc3 Nc6 7.b5 Ne7 8.Nge2 Ng6 9.g3 (9.0-0 Bg7+=) 9...c6 10.a4 d5 11.Bd3 f5 12.e5 (12.ed5 cd5 13.0-0+=) 12...c5–/+ 13.dc5 Bc5 14.f4? (14.a5–/+) 14...Ng4–+ 15.Ba3 (15.Rf1 Ne3 (15...Nh2 16.Rh1 Nf3 17.Kf1–+) 16.Qc1 Nf1 17.Kf1 d4–+) 15...Bf2 16.Kd2 (16.Kf1 Ne3 17.Kf2 Nd1 18.Nd1 gf4 19.Bd6–+) 16...Be3 17.Ke1 Nf2 18.Qb1 Nh1 19.Nd1 gf4 (20.Ne3 fe3–+; 19...Bb6 20.fg5 Ne5 21.Bc1–+) 0–1. Miller,J – Johnson,A, corr, 1982.

3.e4 d6 4.d4 g5 5.Bd3 a5 6.b5 Bg7 7.Nf3 (7.Ne2 Nd7+=) 7...Bg4 (7...g4 8.Nfd2 Nd7+=) 8.Nbd2 Bh5 9.Qc1 (9.h3 c5+/–) 9...e6 10.a4 g4 11.Ng1 Nd7 12.Ne2 Qe7 (12...Qf6 13.Nc4+=) 13.Nf4+/– Bg6 14.0-0 0-0-0 15.Nb3 b6 16.Re1 (16.Qd2 Rh8+=) 16...Rde8 (16...Rh8 17.Ng6 hg6 18.Qe3+=) 17.c4 Qg5 (17...Rh8 18.Qd2+/–) 18.Ng6 Qc1 19.Rac1 hg6 20.Ba3 White plans c5 20...f5 (20...Rh8 21.c5 dc5 22.dc5+/–) 21.c5 dc5 22.dc5 Nf7 23.cb6 Nb6 24.Na5 Na4 25.b6 The mate threat is Rxc7 25...Nb6 26.Ba6 Kb8 27.Nc6 Ka8 28.Ne7 Rh8? (better is 28...Be5!? 29.Ng8 Rg8+/–) 29.Ng6+– Rh6 30.ef5 Nd6 31.Bd6 cd6 32.Bd3 e5 33.Rc7 Bf6 34.Ra1 Kb8 35.Raa7 Bd8 36.Rcb7 Kc8 If Black now only could play Bc7... 37.Ba6 (37.Ba6 Bc7 38.Rc7 Kd8 39.Rcb7 Rg6 40.Rb8 Nc8 41.Rc8) 1–0. Popstein,Sheila – Deline, email 4AMM–06, 1997.

3.e4 d6 4.Nf3 e5 5.Nc3 g5 6.h4 g4 7.Ng1 (7.Ng5 Rg7 8.Bc4 Nc6=) 7...Be6=+ 8.Nge2 c5 9.bc5 Nc6 (9...dc5!? 10.Rb1 Nc6=) 10.cd6+= Bd6 11.Ng3 f5 (11...Bc5 12.Bb5+=) 12.ef5+/– Nf5 13.Nge4 Be7 14.Bb5 (14.h5 g3 15.f3 Nd6+/–) 14...Qb6 15.Rb1 (15.h5 g3 16.f3 0-0-0 17.Bc6 Ne3 18.Bb7 Qb7 19.de3 Rd1 20.Nd1 Qc7+=) 15...0-0-0 (15...Ba2 16.Na2 Qb5 17.Nac3+=) 16.Bd3 (16.Ng5 Ncd4 17.Bc1 Qd6+=) 16...g3 (16...Qc7 17.h5+/–) 17.Ba3 gf2 18.Nf2 Nb4 19.Bb4 Bb4 20.Bf5 Bf5 21.Qf3 (21.g4 Bg4 22.Ng4 Qc6 23.Rb4 Qh1 24.Ke2 Qh4=) 21...Rgf8+= (< 21...Bc2 22.Rb2 Rgf8 23.Rc2 Rf3 24.Na4 Qc6 25.Rc6 bc6 26.gf3 Rd2 27.a3+/–) 22.0-0 Be6 23.Qe2 Rg8 24.Nce4 Qa5 25.d3+/– Be7 26.c4 Qc7 27.Qe3 Kb8 28.Ng5 Bc8 29.Nfe4 Rg7 30.Rf2 Rdg8 31.Kh1 Rg6 32.Rf7 h6= 33.Nf3 Rg2 34.Nf6+/– e4 35.Qe4 Qg3 36.Qe5 Qe5 37.Ne5 Bf6 38.Rf6 Re2 39.d4 Bh3 ½–½. Gls1968 – Per Aspera, ChessWorld.net, 2005.

3.e4 g6 4.Be2 Bg7 5.Bg7 Rg7 6.Nf3 Nc6 (6...g5 7.0-0+=) 7.b5+/– Na5 (7...Nb8 8.d4+/–) 8.0-0 b6 9.d4. Trkn – Niklas, itsyourturn.com, 2001.

3.Nf3 e5 4.a3 e4 5.Ng1 d5 6.e3 c5 7.c3 a5 8.b5 c4 9.a4 Nd7 10.Ne2 Ne5 11.Nc1 Nf5 12.Qh5 Rh8 13.Rg1 Qf6 14.Qd1 Nh4 15.Be2 Qg6 16.Kf1 Ng2! 17.Bh5 (17.Rg2 Bh3) 17...Bh3 18.Bg6 Ne3 19.Ke1 Nd1 20.Bf7 Kf7 (20...Nf7?! 21.Kd1 h5 22.Ba3–+) 21.Kd1 Bd6 22.Rh1 Ng4 23.Ke2 Raf8 24.Ba3 Ke7 25.Rg1 Rf2 26.Kd1 0–1. MacChess 5.0 – MacChess 5.0, 2000.

3.Nf3 g5 4.h3 Bg7 (4...d5 5.e3=) 5.Bg7 Rg7 6.g4 (6.e4 e5+=) 6...b6 (6...d5 7.d4=) 7.c4 Bb7 8.d4 (8.Bg2 Nc6=) 8...e6 (8...c5 9.bc5 Bf3 10.ef3 bc5 11.h4 gh4 12.Rh4=) 9.Bg2 Nc6 (9...f5 10.gf5 Nf5 11.e3=) 10.0-0 (10.b5 Na5 11.c5 bc5 12.dc5 a6=) 10...Qe7 (10...Nb4!? 11.a3 Na6=+) 11.b5= Na5 12.d5 0-0-0 (12...Nc4? 13.Qd4 f5 14.Qc4 Bd5 15.Qc7+–) 13.Qd3 (13.Qd4 f5=) 13...f5=+ 14.gf5 Nf5 15.e4 (15.Nh2 h5–/+) 15...Nh4 (better 15...g4 16.hg4 Rg4–+) 16.Nh4? (better 16.Nh2–/+) 16...gh4–+ 17.Nd2 (17.f4 Rdg8 18.Rf2 Qc5–+) 17...Rdg8 18.Qf3 (18.Kh1 Rg2 19.Rg1 Qg7–+) 18...Rg2 19.Qg2 (19.Kh1 ed5 20.cd5 Qe5 21.Qg2 Rg2 22.Kg2 Qg5 23.Kf3 Qd2–+) 19...Rg2 20.Kg2 Qg5 21.Kh2 (21.Kh1 Qd2 22.f3 Qf4 23.de6 de6–+) 21...Qd2 22.Rad1 (22.Kh1 Nc4 23.Rg1 Kd8 24.Rg8 Ke7–+) 22...Qf4 23.Kh1 (23.Kg1 Qe4 24.f3 Qg6 25.Kh1 Nc4–+) 23...Nc4 24.Rd3 (24.Rde1 Qf3 25.Kh2–+) 24...Qe4 25.Kh2 Qd3 26.f3 (26.Re1 Qd5 27.Rg1 Qe5 28.Rg3 Qf4 29.Kg1 Qc1 30.Kh2 Qh1) 26…Qf1 (26...Qf1 27.de6 Qf2 28.Kh1 Bf3; 26...Qe2 27.Kg1 Ne3 28.Rf2 Qe1 29.Kh2 Qf2 30.Kh1 Qg2) 0–1. e4_e5_f4 (1675) – DasDing (2225), lichess.org, 2021.

3.Nf3 g6 4.e3 d6 5.Be2 c6 (5...e5 6.0-0+=) 6.c4 Nd7 7.a3 Bg7 8.Bg7 Rg7 9.Ng5 Nf5 10.Qc2 h6 (10...a5 11.b5+=) 11.Nf3+= e5 12.e4 (12.0-0 Qf6+=) 12...Ne7 (12...Nh4 13.Nh4 Qh4 14.0-0=) 13.d4+= c5 14.de5 de5 15.0-0 f6 (15...Nc6 16.Rd1+=) 16.Nc3+– cb4 (16...Qb6 17.Qd2+–) 17.ab4 Nb6 (17...Nc6 18.Qd2 Nb4 19.Qh6+–) 18.Rad1 (18.c5 Nd7+–) 18...Qc7 (18...Nd7 19.Qd2 Rh7 20.Nb5+–) 19.Nd5 (better 19.Nb5!? Qb8 20.Qd2+–) 19...Nbd5 20.ed5 Bf5 21.Bd3 (better 21.Qd2 Ng8 22.c5+–) 21...Rc8? (21...0-0-0 22.Qe2+–) 22.Bf5?? (better 22.d6 Qd7 23.de7 Re7 24.Qb3+–) 22...Nf5+– 23.d6?? (better 23.c5+–) 23...Qc4–/+ (23...Nd6?! 24.c5 Qc6 25.Qe2=) 24.Qa4 (24.Qb2 Rd8–/+) 24...Rd7 25.Rc1?? (better 25.Nd2 b5 26.Qa3–/+) 25...Qc1–+ 26.Qa7 Nd6 27.h3 Qf4 28.Rd1 (28.Qa2 Kf8–+) 28...Rc1 (better 28...Nb5 29.Qa4 Rd1 30.Qd1–+) 29.Rc1 (29.Qa4 Rd1 30.Qd1 Rc7–+) 29...Qc1 30.Kh2 Qf4 31.Kg1 Qb4 (better 31...Rc7 32.Kh1 Ne4 33.Ne1–+) 32.Qb8 (32.Qa8 Rd8 33.Qa2 Kf8–+) 32...Ke7 33.Qg8 Nf7 (33...Qe4 34.Qb3–+) 34.Qg6 Rd1 35.Kh2 Qb1 (35...Qf4 36.Qg3–+) 36.Qg4 (36.Nh4 Qg6 37.Ng6 Kd6–+) 36...Ng5 (36...f5!? 37.Qh4 Kf8 38.Ne5 Ne5 39.Qh6 Ke7 40.Qg7 Nf7 41.Qc3–+) 37.Ng5 hg5 38.Qh5 (38.Qc4 b5 39.Qc5 Kf7 40.Qa7 Kg6–+) 38...Rh1 (38...b5 39.Qh6 Qf5 40.Qg7 Kd6 41.Qf8 Kd7 42.Qf7 Kc6 43.Qa2–+) 39.Kg3 Qb3 40.f3 Rd1 (40...b5 41.Qh7 Qf7 42.Qf5–+) 41.Qh7 Ke6 (better 41...Qf7 42.Qc2 Rd5–+) 42.Qg8+– Kf5 Threatening mate: Qxg8 43.Qb3 (43.Qb3 Rd7 44.Qb1 Ke6 45.Kg4+–) 1–0. Markzela (1765) – Josi0509 (1970), lichess.org, 2020.

3.a3 a5

4.b5 d5 5.e3 Bg4 6.Nf3 e6 7.Be2 Nf5 8.0-0 Nd6 +=.

4.b5 d6 5.e4 Nd7 6.d4 e5 7.Nf3 ed4 8.Bd3 Be7 +=.

4.Nc3 ab4 5.ab4 Ra1 6.Ba1 d5 7.Nf3 Bg4 8.Ne5 Bh5 =.

4.Nc3 d5 5.Nf3 Bg4 6.h3 Bf3 7.ef3 e6 8.b5 d4 =.

4.Nc3 d6 5.Nf3 e5 6.e4 g5 7.h3 Nd7 8.d4 Bg7 +=.

4.Nc3 e5 5.Nf3 f6 6.d4 ab4 7.ab4 Ra1 8.Ba1 Bb4 =.

4.e4 e6 5.ba5 Nc6 6.Nf3 Na5 7.Nc3 d5 8.ed5 ed5 +=.

4.Nf3 ab4 5.ab4 Ra1 6.Ba1 d5 7.e3 f6 8.Bd3 Bf5 =.

4.Nf3 d5 5.e3 f6 6.Bd3 g6 7.e4 e5 8.ed5 ab4 +=.

3.a3 d5

4.e3 a5 5.Nf3 ab4 6.ab4 Ra1 7.Ba1 f6 8.Bd3 Bf5 =.

4.e3 Bf5 5.Nf3 e6 6.Be2 c5 7.bc5 Bc5 8.0-0 Nc6 =.

4.e3 g5 5.c4 a5 6.Qa4 Bd7 7.b5 c6 8.cd5 cd5 +=.

4.Nf3 a5 5.e3 f6 6.d4 Bf5 7.b5 e6 8.Be2 Nd7 +=.

4.Nf3 e6 5.e3 f6 6.d4 a5 7.b5 Nf5 8.Bd3 g5 –/+.

4.Nf3 Bf5 5.e3 e6 6.Nc3 c6 7.Be2 Bd6 8.0-0 Qc7 =.

4.Nf3 f6 5.e3 e5 6.Be2 a5 7.b5 Be6 8.0-0 Bd6 =.

4.Nf3 Bg4 5.e3 Nd7 6.Be2 e6 7.Nc3 Nb6 8.e4 c6 +=.

4.Nf3 g5 5.h3 Bf5 6.e3 e6 7.d3 c5 8.bc5 Bc5 =.

3.a3 d6

4.e4 a5 5.Nf3 e5 6.d4 ab4 7.ab4 Ra1 8.Ba1 d5 +=.

4.e4 a6 5.d4 Nd7 6.Nf3 g5 7.h4 g4 8.Ng5 Rg7 +=.

4.e4 Nc6 5.b5 Ne5 6.d4 Ng6 7.Nf3 e6 8.Bd3 Nf4 +=.

4.e4 Bd7 5.d4 a5 6.Nf3 e5 7.b5 ed4 8.Bd3 c5 –/+.

4.e4 Nd7 5.d4 e5 6.Nf3 g5 7.h4 g4 8.Ng5 Rg7 +=.

4.e4 e5 5.Nf3 g5 6.h3 Bg7 7.Nc3 Nc6 8.Bb5 f5 +=.

4.e4 e6 5.d4 a5 6.b5 d5 7.Bd3 f5 8.ed5 ed5 –/+.

4.e4 Ng4 5.d4 d5 6.Nc3 de4 7.Ne4 Nf6 8.Bd3 Nbd7 –/+.

4.e4 g5 5.Bc4 Bg7 6.Bg7 Rg7 7.Ne2 Nd7 8.d4 e5 +=.

3.a3 e6

4.Nc3 a5 5.ba5 d5 6.Nf3 Ra5 7.e3 Nd7 8.e4 Nc5 =.

4.Nc3 c5 5.bc5 Bc5 6.e3 d5 7.Bd3 e5 8.Bh7 Rh8 +=.

4.Nc3 d5 5.Nf3 c5 6.bc5 Bc5 7.e3 Nc6 8.d4 Bb6 +=.

4.Nc3 d6 5.e4 e5 6.Nf3 g5 7.h3 Bg7 8.Bc1 Be6 +=.

4.Nc3 e5 5.Nf3 d6 6.d4 ed4 7.Nd4 Be7 8.e4 Bf6 +=.

4.e3 a5 5.b5 d5 6.Bd3 Nd7 7.Bh7 Rh8 8.Bd3 e5 +=.

4.e3 d5 5.Nf3 a5 6.ba5 Nd7 7.Be2 Bd6 8.Nc3 c6 +=.

4.e3 d6 5.Bd3 Rh8 6.Nf3 e5 7.Nc3 g5 8.0-0 Be6 +=.

4.Nf3 a5 5.ba5 d5 6.e3 Nd7 7.Be2 Ra5 8.0-0 Bd6 +=.

4.Nf3 c5 5.bc5 Bc5 6.d4 Bb6 7.e3 d5 8.Bd3 Nf5 +=.

4.Nf3 d5 5.e3 f6 6.d4 a5 7.b5 Nf5 8.Bd3 g5 –/+.

4.Nf3 d6 5.e4 g5 6.h3 e5 7.Nc3 Bg7 8.Rb1 g4 +=.

4.Nf3 Be7 5.e3 d5 6.Bd3 Bf6 7.Bf6 gf6 8.Nh4 f5 +=.

4.Nf3 g5 5.e4 g4 6.Ne5 d6 7.Nc4 d5 8.ed5 ed5 =.

3.a3 g5

4.c4 a5 5.e4 e5 6.Be5 Nc6 7.Bb2 ab4 8.Ne2 Qe7 =.

4.c4 d6 5.d4 Bg7 6.e3 e5 7.Bd3 ed4 8.Bd4 Nf5 +=.

4.c4 Bg7 5.Bg7 Rg7 6.d4 e5 7.e3 a5 8.b5 ed4 +=.

4.e4 d5 5.ed5 Qd5 6.Nc3 Qe6 7.Be2 Bg7 8.d4 Nf5 +=.

4.e4 e6 5.d4 a5 6.ba5 Ra5 7.Bd3 d6 8.Ne2 Nc6 9.0-0 Bg7 10.Nd2 Ra7 11.Bb5 Qe7 12.c4 Bd7 13.Re1 Rf8 14.Rb1 f5 15.d5 Bb2 16.Rb2 Ne5 +=. marekt – DeMaddin, ChessWorld.net, 2003.

4.e4 Bg7 5.Bg7 Rg7 6.Bc4 c6 7.Nc3 b5 8.Bb3 a5 +=.

3.c4 e6

4.a3 g5 5.e3. Benjap – DeMaddin, ChessWorld.net, 2003.

4.Qa4 Na6=.

4.Qa4 Qh4=.

4.b5 b6 5.Qc2+= f5 6.Nf3 Bb7 7.Nc3 g5 8.h3 (8.e4 a6=) 8...Qe7 (8...a6 9.e4=) 9.e4 g4 (9...Bg7 10.d3=) 10.hg4+= fg4 11.Nh4 (11.Ne5 d6 12.Nd3 Nd7+=) 11...d6 (11...Bg7 12.f4+=) 12.d4+= Nd7 13.0-0-0 (13.Bd3 0-0-0+=) 13...Bg7= 14.Kb1 (14.f4 a6=) 14...Bf6 (14...a6 15.Ne2=) 15.g3 (15.Nf5 ef5 16.Rh6 Qg7=) 15...Qg7 (15...a6 16.Ng2 Bg7 17.Qd2 ab5 A) < 18.Rh6 b4 19.Nb5 Bh6 20.Qh6 Be4 21.Bd3 Bd3 (< 21...Bg2 22.Nc7 Kd8 23.Na8 Ba8 24.Qh7 Qh7 25.Bh7=) 22.Rd3 Nf8=+; B) 18.cb5=) 16.Ng2 0-0-0 (16...a6 17.Nf4 Nf8 18.Nh5+=) 17.Nf4 Rde8 18.Nh5 Qg6 19.Nf6 Nf6 20.Bd3 e5 21.de5 de5 22.Nd5 Qg7 (22...Rgf8+=) 23.f4 (better is 23.Bc1!? Nf7 24.Nf6 Qf6 25.Rh7+/–) 23...gf3= 24.Rdf1 Nhg4 (24...Nd5 25.cd5 Rgf8 26.Qh2=+) 25.Rf3+= Rgf8 26.Rhf1 Qh6 (26...Kb8 27.Rf5+=) 27.Be2 Qg6 28.Bc1 (28.Ba3 Rf7 29.Rf5 Bd5 30.cd5 Ne3=) 28...Re6 (28...Bd5 29.cd5 Kb8+/–) 29.Rf5+/– h5?? (29...Rg8+/–) 30.Bg4+= Qg4?? (30...hg4 31.Rf6 Rff6 32.Rf6 Qe8+–) 31.Bb2 (31.Nf6 Rff6 32.Rf6 Be4 33.Rf8 Kb7–+) 31...Qg7 32.Re5 (32.Be5?! Re5 33.Re5 Nd5 34.Rf8 Qf8 35.ed5 Qg8+–) 32...Bd5 33.cd5 (33.Rd5?! Nd5 34.Bg7 Rf1 35.Kb2 Nb4+=) 33...Re5 34.Be5 Ne8 (34...c5 35.bc6 Qe7 36.Rf5 Qb4 37.Ka1+–) 35.Bg7 Rf1 36.Kb2 Ng7 37.e5 1–0. Fehr,Wolfgang – Van Esbroeck, corr SOK–93–98, 1995.

4.b5 b6 5.Nc3 Bb7 6.e3 d6 7.Qc2 Nd7 8.d4 a5 9.a4 Ra7!? 10.Nh3?! Qh4! 11.0-0-0 Ng4 12.Kb1 Be7 13.Ka1 g5 14.Qd2 f5! 15.f3 Ngf6 16.Nf2 g4! 17.fg4 Ng4 18.Ng4 Qg4 19.Rg1 Bg5 20.Qf2 Qh4 21.g3 Qh6 22.Re1 Rf8 23.Be2! Kd8 24.Bf3 ½–½. Mueller – Schlenker, corr 1979–80.

4.b5 b6 5.e3 Bb7 6.Nf3 f5 (6...a6 7.Bd3+=) 7.Be2 g5 8.Kf1 (8.0-0!?+=) 8...g4= 9.Ne1 (9.Ne5 a6=) 9...Qh4 10.Be5 (10.Kg1 Nf7=) 10...d6 (10...Kd8 11.d4=) 11.Bg3 Qf6 12.Nc3 Nd7 13.d4 Be7 14.h3 (14.Kg1 a6=) 14...0-0-0 15.hg4 Ng4 16.Bg4 Rg4 17.Rh7 Rh8 18.Rh8 Qh8 19.Kg1 (19.Ke2 Qh1=) 19...Bh4 20.Ne2 Nf6 (20...e5 21.c5 dc5 22.de5 Ne5 23.Rc1=+) 21.Nf3 (21.c5 Ne4 22.c6 Ba8=+) 21...Bg3 (21...Bf3 22.gf3 Rg5 23.Kf1=) 22.Ng3= Ne4 23.Ne4 Be4 24.Ne1 Rh4 25.f3 Rh1 (25...Bb7 26.Kf2=+) 26.Kf2= Qh4 (26...Bb7 27.Ke2=) 27.Ke2+= Qh5 (27...Bb7 28.a4+=) 28.Kd2 Bb7 29.a4 Qh4 30.a5 e5 31.Ke2 Qg3 (31...f4 32.ab6 ab6 33.de5 fe3 34.Qc1+=) 32.ab6 ab6 33.Qb1 e4 (better is 33...f4 34.Qf5 Kd8 35.Qf8 Kd7 36.de5 fe3 37.e6 Ke6 38.Qe8 Kf6 39.Qe3 d5+/–) 34.fe4 (better is 34.d5+/–) 34...Be4=+ 35.Qc1 ½–½. Sternik,Ryszard – Van Esbroeck,Dirk, corr SOK–92–98, 1993.

4.b5 d5 5.e3=.

4.b5 d5 5.Nf3=.

4.b5 d6 5.e4=.

4.b5 Qh4 5.Qc2 (5.e3 Ng4 6.g3 Qh5+–) 5...Ng4 6.g3 Qd8? (better 6...Qh5!?+–) 7.Qh7+– Nf6?? (7...Nh6+–) 8.Bf6 Qf6 9.Nc3 (9.Qg8?? Qa1 10.f4 Qb1 11.Kf2 a6–+) 9...d5 (9...d6 10.Qg8 Nd7 11.Qh7+–) 10.e3 (better 10.cd5 ed5 11.Qg8 Nd7+–) 10...Nd7 11.Rc1 (11.Qg8 Qh6 12.g4 Nf6+–) 11...dc4?? (11...Qh6 12.Qh6 (12.Qg8 Nf6 13.Qf8 Kf8=+) 12...gh6 13.cd5+–) 12.Bc4 (better 12.Qg8 Qh6 13.g4+– (13.Bc4 Nf6 14.Qf8 Kf8=+)) 12...Qh6+– 13.Qc2 (worse 13.Qg8 Nf6 14.Qf8 Kf8=+) 13...Ba3 14.Rb1 Ne5 (14...g5 15.h4+–) 15.Be2 f5 (15...Qg6 16.d3+–) 16.d4+– Nf7 (16...Ng4 17.b6! ab6 18.Nb5+–) 17.Bf3 (17.b6 ab6 18.Nb5 Bd6 19.Nc7 Bc7 20.Qc7 Qf6+–) 17...g5 (17...Bd6 18.h4+–) 18.h3 (18.b6 ab6 19.Nb5 Bd6 20.Nc7 Bc7 21.Qc7 g4 22.Bb7 Bb7 23.Qb7 Ra2+–) 18...Qf6 (18...Bd6 19.Nge2+–) 19.Bg2 (19.Nge2 Bd6+–) 19...Bd6 (19...Be7 20.Nge2+–) 20.Qa4 (20.Nge2 Rf8+–) 20...Kf8 (20...f4 21.Ne4 Qf5 22.g4+–) 21.e4 (21.Nge2 Kg7+–) 21...fe4 22.Ne4 Qg6 23.Ne2 Kg7 (23...e5 24.0-0 Bh3 25.Bh3 Qe4 26.Rfe1+–) 24.0-0 a6 25.Qc4 (25.b6!? c6+–) 25...ab5 26.Rb5 c6 27.Rb2 (27.Nd6? Nd6 28.Qb4 Nb5–+ (28...cb5?! 29.Qd6 Ra2 30.Nc3+=)) 27...Ba3 1–0. Baldauf,Ernst (1940) – Babinetz,Rainer (1725), Wattens op, 1993.

4.c5 Nc6 5.b5 Nb4 6.a3 Nd5 7.d4 f5 8.Nc3 Nc3 9.Bc3 b6 10.Bb4 Bb7 11.Nf3 Qf6 12.Rc1 Be4 13.e3 Ng4 14.h3 Qh6 15.Bd3 Nf6 16.0-0 g5 17.Ne5 d5 (better is 17...Bd3!? 18.Qd3 g4 19.hg4 Ng4 20.Ng4 Rg4=) 18.cb6+/– cb6 19.Qc2 Rd8 20.Qc7 Nd7 21.Nf7!! Kf7 22.Qd8 Nf6 23.Qc7 Kg6 24.Be4 de4 25.Bf8 Rf8 26.Qa7 Nd5 27.Qd7 Kh5 28.Rc6 Rf6 29.Rc8 Qg6 30.Qd6 Kh6 31.a4 f4 32.Re1 f3 33.g4 Rf7 34.Rec1 Kg7 35.Re8 Rf6 36.Rcc8 Qf7 37.Qe5 h6 38.Rh8 Ne7 39.Rcf8! Qg6 (39...Qf8 40.Rf8) 40.Rf6 Qf6 41.Rh7! Kh7 42.Qf6 Ng8 43.Qe6 Kg7 44.Qe4 Nf6 45.Qf3 Kg6 46.Qc6 Kg7 47.Qb6 Kg6 48.Qe6 Kg7 49.b6 Ne4 50.Qe4 Kf7 51.b7 h5 52.b8Q hg4 53.Qf5 Kg7 54.Qbf8# 1–0. Sigma – Sigma, 2000.

4.d4 Bb4=+ 5.Bc3 Nc6 (5...Be7 6.Nf3=+) 6.Bb4 (6.e3 Nf5=+) 6...Nb4 7.Nf3 (7.e3 d6=+) 7...d6 8.Qa4 Nc6 9.d5? (better is 9.e3=+) 9...Qf6–+ 10.dc6 b6 11.Qc2 (11.e3 Qa1 12.Bd3 f5–+) 11...Qa1 12.Qh7? (12.e3–+) 12...g6 (< 12...Qa2 13.e3–+) 13.Nfd2 (13.Qh6 Qb1 14.Kd2 Qa2 15.Kc3 Qa3 16.Kc2 Qa4 17.Kc3–+) 13...Rh8 14.Qh8 Qh8 0–1. markmooney – marekt, ChessWorld.net, 2004.

3.e4 e6

4.a3 a5 5.ba5 Nc6 6.Nf3 Na5 7.Nc3 d5 8.Bd3 d4 +=.

4.a3 a5 5.b5=.

4.a3 d5 5.Nc3 +=.

4.a3 d5 5.Bd3 +=.

4.a3 d5 5.ed5 ed5 6.Nf3 c5 (6...Bg4 7.Be2+=) 7.Qe2+= Qe7 8.bc5 Qe2 9.Be2 Bc5 10.Nc3 (10...Be6 11.0-0+=). Schirmer,Michael – Rossbach, corr SOK–90–63, 1990.

4.a3 g5 5.d4 a5 6.b5 d6 7.Bd3 d5 8.e5 Nf5 9.Qh5 h6 (9...h6 10.Ne2 g4+=). michaelbuss – DeMaddin, ChessWorld.net, 2003.

4.b5 b6 5.d4 Bb7 (5...a6 6.Nf3=) 6.Bd3 g6 (6...a6 7.a4=) 7.Nf3+= f5 8.e5 g5 9.0-0 g4 10.Ne1 d6 (10...a6 11.a4+=) 11.Qe2 Rg6 12.c4 (12.Nd2 Qh4+=) 12...Bg7 (12...de5 13.Qe5 Bd6 14.Qe3+=) 13.Nd2 (13.ed6 cd6 14.Nc2 a6+=) 13...de5 14.de5 Nd7 15.Bc2 Qh4 16.Rd1 0-0-0 17.f4 gf3 18.Nef3 (18.Ndf3!? Qh5 19.Nd3=) 18...Qh5–/+ 19.g3 (19.c5!? Nc5 20.Nc4–/+) 19...Ng4 20.c5 Nc5 21.Nc4 (21.a3 Nd7–+) 21...Nh2! 22.Rd8 (22.Nh2 Rg3) 22...Kd8 23.Qh2 Bf3 (23...Bf3 24.Qh5 Bh5–+) 0–1. Plock,Joerg – Van Esbroeck,Dirk, email SOK–99–E005A, 1999.

4.b5 b6 5.Nf3 Bb7 6.Nc3 f5 (6...Bb4 7.Bd3+=) 7.Bd3 g6 8.Qe2 Qe7 (8...a6 9.a4+=) 9.a4 a6 10.Ba3 (10.0-0 Bg7+=) 10...Qf7 (10...Qf6 11.ba6 Na6 12.e5+=) 11.ba6 (11.a5 Ba3 12.Ra3 Qe7+=) 11...Na6 12.e5 (12.Bf8 Rf8 13.a5 ba5 14.Ra5 Nb4 15.Ra8 Ba8+=) 12...Qg7 (12...Ba3 13.Ra3 Qe7 14.Ra1=) 13.Bf8 Qf8 (13...Rf8 14.0-0+=) 14.0-0 (14.a5 ba5 15.Ra5 Nb4 16.Ra8 Ba8=) 14...Nc5 (14...Nb4 15.Rfb1+=) 15.Bc4 d6 (15...g5!?+=) 16.Ng5 Qe7 (16...Rg7 17.Ne6 Ne6 18.Be6 de5 19.Qe5+/–) 17.Ne6!+– Ne6 (17...Qe6 18.Be6) 18.ed6 cd6 19.Be6 Rg7 20.Nd5 (better is 20.Rfb1 Ra6 21.a5+–) 20...Ba6? (better is 20...Bd5 21.Qb5 Kf8 22.Qd5 Ra5+–) 21.d3 (21.Ne7?! Be2 22.Rfe1 Re7 23.Re2 Kd8+/–) 21...Qg5 22.f4 (22.Bd7 Kf8 23.Nc7 Re7 24.Ne6 Re6 25.Qe6 Nf7+–) 22...Qh4 (22...Qd8 23.Rfb1+–) 23.Bf5 (23.Nb6 Rb8 24.Rfe1 Kd8+–) 23...Kf8 24.Be4 (24.Nb6?! Nf5 25.Na8 Qd8+–) 24...Re8 25.Qe1 (25...Qd8 26.Qb4+–) 1–0. Psion – Van Esbroeck,Dirk, 3 min/Zug, 1992.

4.b5 d5 5.Bd3=.

4.d4 Bb4=+ 5.c3 Be7 6.Nf3 b6 (6...d5 7.Bd3=+) 7.e5 Bb7 8.Bd3 g6 (8...Nf5 9.0-0=+) 9.0-0 f5 10.Bc1 Nf7 11.Qe2 g5 12.Ne1 g4 13.Nc2 a5 14.Nd2 Nc6 15.Re1 Bg5 16.Ba3 Bd2 (16...Bf4 17.Rab1=+) 17.Qd2= Qg5 18.Qe2 Ne7 19.Bc1 Qh4 20.Bf4 Nd5 21.Bg3 Qg5 22.c4 Nf4 23.Bf4 Qf4 24.Rab1 Ng5 25.Qe3 (25.Qd1 Ne4 26.Be4 Be4–/+) 25...Nh3 (25...Qe3!? 26.Ne3 Ne4=+) 26.gh3= gh3 27.Kf1 Qh2 28.Ke2 f4 29.Qd2 Qf2 30.Kf2 Rg2 31.Kf1 Rd2 32.Re2?? (32.Red1 h2 33.Be4 Be4 34.Rd2 h1Q 35.Ke2 Qg2 36.Kd1 Qf1 37.Ne1 Bb1 38.c5 bc5 39.Re2 cd4 40.Rg2–+) 32…h2 (33.Rh2 Rh2–+ (33...Rd3?! 34.Rh7 Be4 35.Rh8 Ke7 36.Ra8 Ba8 37.Rb2–+)) 0–1. Seack,Ingo – Van Esbroeck,Dirk, corr SOK–92–88, 1992.

4.Nf3 Bb4= 5.Bc4 (5.Be2 Nc6=+) 5...d5=+ 6.ed5 ed5 7.Be2 (7.Qe2 Kf8 8.Bd3 Bf5=+) 7...f6 8.Nc3 (8.0-0 Kf7=+) 8...Kf7 (9.a3 Bc5=+). gamuxi – marekt, ChessWorld.net, 2004.

4.a3 b6

5.Nf3 Bb7 6.Nc3 a5 7.b5 +=.

5.Nf3 Bb7 6.Nc3 d5 7.ed5 ed5 8.Bd3 Qe7 9.Qe2 Qe2 10.Ne2 f5 11.Ned4 g6 12.0-0 Nd7 13.Rfe1 Kd8 14.Ne6 Kc8 15.Nf8 Nf8 16.Re7 Bc6 17.Rae1 a6 18.Bg7 Ng4 19.h3 Nf2 20.Kf2 Kb7 21.Nd4 Ba4 22.c4 (22...Rd8 23.Bf8 Rdf8 24.cd5+–) 1–0. Psion – Van Esbroeck,Dirk, 3 min/Zug, 1992.

5.Nf3 Bb7 6.Nc3 g5 7.h4 (7.h3 a5 8.b5 f5+=) 7...g4= 8.Ng5 (8.Ne5 d6 9.Nc4 Be7=) 8...Bg7+= 9.Bd3 (9.e5 Be5 10.d4 Bh8 11.Nh7 Nf5–/+) 9...Rh8 10.Bb5 (10.e5 Bg2 11.Rg1 Bb7+=) 10...a6–/+ 11.Ba4 b5 12.Bb3 Nc6 (12...f6 13.Be6 fg5 14.Bg4–/+) 13.a4+= Nb4 14.ab5 f6 15.Na2 (15.Ra4 a5 16.Ne2 c6–/+) 15...Na2–/+ 16.Ra2 ab5 17.Qe2 (17.Ra8 Qa8 18.Qe2 A) 18...fg5 19.Bg7 Rg8 20.Bh6 (worse is 20.hg5 Rg7 21.gh6 Qa1 22.Qd1 Qd1 23.Kd1 Rf7+=) 20...Be4 21.0-0 Bg2 22.Qg4 Bf1 23.Kf1 Qh1 24.Ke2 Qh4 25.Be6–/+; B) 18...Bc6–+) 17...c6 (17...fg5? 18.Bg7 Ra2 19.Ba2+–) 18.Ne6 de6 19.Ra8 Qa8 20.Be6 Ke7 (20...Bc8 21.Bb3–/+) 21.Bb3 Rd8 22.Qe3 White begins to deal mighty blows 22...Qa5 (22...Rc8 23.Qc5 Ke8 24.Qd6–/+) 23.e5+= f5 The passed pawn on e5 will quickly become a dangerous weapon 24.Bc3 Qc7 25.Bb4 Ke8 (25...Kd7 26.Bd6 Qd6 27.ed6–/+) 26.Bd6+= Qd7 27.Qg5 Ra8 28.0-0 Plans e6 28...c5 29.Bc5 Ra6?? (better is 29...g3 30.Qg3 Ng4=) 30.e6+– Re6 31.Be6 Qe6 32.Qg7 (32.Qg7 Nf7 33.Ra1+–) 1–0. Andersson,Egart – Van Esbroeck,Dirk, email, 1998.

5.d4 Bb7

6.Nd2 a5 7.b5 +=.

6.Nd2 d5 7.Bd3 c5 8.c4 cb4 9.ab4 de4=+ 10.Be4 Be4 11.Ne4 Bb4 12.Nc3 White plans d5 12...Nc6 13.Nf3 Nf5 Now all is on d4 14.d5 ed5 15.cd5 Nce7?? (15...Bc3 16.Bc3 Nce7–/+) 16.Qa4+– Qd7 17.Qb4 Nd5 Opening the d–file gets White a lot of play (17...f6 18.0-0+–) 18.Qe4 (18.Nd5 Qe6 19.Ne3 Ne3 20.Qb5 Qd7+–) 18...Qe6 19.0-0 (19.Ne5 Nfe7 20.0-0+–) 19...Qe4–/+ 20.Ne4 f6 21.Rfd1 Nfe7 22.Nd4 (22.Nd6 Kd7 23.Nb5 a5+–) 22...Kf8? (22...a5 23.Nc6+–) 23.Nc6 (23.Nd6!? Rh8 24.Ne6 Kg8+–) 23...Nc6 24.Rd5 Kf7 25.Re1 (25.Nd6 Ke6 26.Rd2 Rgd8+–) 25...Rgd8–/+ 26.Rb5 (26.Nd6 Kf8–/+) 26...Nd4 27.Bd4 Rd4 28.Nc3 (28.f3 Rad8–/+) 28...Rc8+= 29.Rb3 Rd3 30.Rc1 (30.Ne4!? Rb3 31.Nd6 Kg6 32.Nc8+=) 30...Rcc3?? (31.Rbc3 Rd7+–; 30...b5 31.g4 a6=+) 0–1. Hasler,Ulrich – Gmuer, corr, 1990.

6.Nd2 d5 7.Bd3 c5 8.bc5!? bc5 9.ed5 Bd5 10.Ngf3 cd4 11.Qe2 +=.

6.Nd2 d5 7.Bd3 c5 8.bc5!? bc5 9.e5 +=.

6.Nd2 d5 7.ed5 Bd5 8.c4 +=.

6.Nd2 f5 7.ef5 ef5 8.Ngf3 g5 9.Ne5 g4 10.Qe2 Qe7 11.0-0-0 d6=+ 12.Nd3 Qe2 13.Be2 Bg2 14.Rhe1 Be7 15.Nf4 Bb7 16.Bc4 Nc6 17.Bg8 Ng8 18.Ne6 Kd7 19.Nc4 (19...d5 20.Nd2+=; better is 19.d5!? Nd8 20.c4+/–) 1–0. Diener,Rudolf – Rettenbacher,W, corr SOK–87–08, 1988.

6.Nd2 g5 7.Bd3+/– g4 8.Ne2 f5 (8...a5 9.b5+/–) 9.0-0 Qf6 10.c4 Nc6 11.f4 gf3+= 12.Rf3 Ne7 13.Qc2 Bg7 14.Nf4 Qg5 15.Raf1 0-0-0 16.Rg3 Qh4+= 17.Rh3 Qg5 18.Rh5+/– Qf6 19.Nb3 Rdf8 20.e5+= Qf7 21.Qd2 Ng6 22.Ng6 Qg6 23.Rg5 Qe8 24.Rg3 Ng4 25.Qe2 Bh6 26.Bc1 Rg6 (27.c5 Bd5+/–; 26...Qh5!? 27.h3 Qh4 28.hg4 Bc1=). Ross,S – Van Esbroeck, corr WCCF–SOK–1, 1995.

6.Bd3 a5 7.b5 +=.

6.Bd3 g6 7.Ne2 f5 8.Nd2 Bg7 9.0-0 Qf6 10.c4 d6 11.Qa4 Nd7 12.c5 dc5 13.bc5 bc5 14.Rab1 Qe7 15.dc5 Bb2 16.Rb2 fe4 17.Ne4 Be4 18.Be4 Rd8 19.Nd4 Qf6 20.Rb7+– e5 21.Nb5 (21...Kf7 22.Bd5 Kf8 23.Bg8 Kg8 24.Nc7+–) 1–0. Cottarelli,Franco – Van Esbroeck, corr 3GMM–33, 1995.

3.Nf3 e6

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

4.a3 a5 5.b5 +=.

4.a3 b6 5.e3 Bb7 6.Bd3 f5 7.0-0 g5 8.Ne5 g4 9.Bb5 Nc6 10.Bc6 dc6 11.d4 Bd6 12.c4 Qe7 13.Qa4 Be5 14.de5 a5 15.Qb3 c5 16.Qa4 Kf8 17.b5 Rd8 18.Rd1 Nf7 19.Qc2 Qh4 20.Rd8 Nd8 21.Nd2 Rg6 22.Qd1 Nf7 23.Nf1 Qd8 24.Qd8 Nd8= 25.Ng3 Rg5 26.e4 fe4 27.Re1 e3 28.Re3+= Ke7 29.h4 gh3= 30.gh3 Rg6 (30...Rg7 31.Kf1 c6 32.bc6 Nc6 33.Rb3=) ½–½. Psion – Van Esbroeck,Dirk, 3min/Zug, 1992.

4.a3 b6 5.e4 Bb7 6.d3 (6.Nc3 a5 7.b5 f5 8.ef5 Nf5+=) 6...g5 (6...a5 7.b5+=) 7.Be2 d6 8.Qd2 g4= 9.Nd4 e5 10.Nb3 f5 11.Nc3 Nd7 12.0-0-0 Qe7 13.h3 0-0-0 14.Kb1 gh3=+ 15.Rh3 f4 16.Bf3 Qf6 17.Rdh1 Nf7 18.Rh7+/– Ng5 19.R7h2 Nf3 20.gf3 Bg7 21.d4 Rh8 22.Rh8+/– Rh8 23.Rh8 Bh8 24.d5 Qh4 25.Qe1 Nf6 26.a4 Qh3 27.Nd2 (27.Qe2 Qh1 28.Ka2 Bg7+=) ½–½. Wozniak – Van Esbroeck, corr 3GMM–33, 1996.

4.b5 b6 5.c4 Bb7 6.d4 d6 7.Qc2 g6 8.h4 Nd7 9.Ng5 Be7 10.f4 Nf6 11.Nd2 Nhg4 12.Rh3 h6=+ 13.Ngf3 Ne3 14.Qb3 Nfg4 15.Rc1 c5 16.a4 g5 17.hg5 hg5 18.Ng5 Bg5 19.fg5 Qg5 20.Nf3 Qf4 21.Rc3? cd4–+ 22.Nd4?? Qf2 23.Kd2 Nf1 (24.Kc1 Qd4–+) 0–1. Wartig,Wolfgang – Van Esbroeck,Dirk, corr SOK–92–88, 1992.

4.b5 b6 5.e3 Bb7 6.Be2 d6 7.c4 a5 8.a4 Nd7 9.0-0 g5 10.h3 g4= 11.hg4 Ng4 12.g3 h5 13.Kg2 h4=+ 14.Rh1 hg3–/+ 15.fg3 Qg5 16.Kf1 Qf5 17.Na3 Nde5 18.Qc2?? Be4–+ 19.Qe4 Qe4 20.Kg2 Be7 21.Be5 de5 22.d3 Qe3 23.Rae1 Qf2 24.Kh3 Rh8 25.Kg4 f5# 0–1. Zimmer,Georg – Mueller,P, corr SOK–89–43, 1989.

4.b5 b6 5.e4 a6 +=.

2.c3 Nc6

3.Bb2 e5+= 4.e3 Bd6 (4...d5 5.b5 Na5 6.d4+=) 5.Nf3 (5.b5 Nb8 6.d4=) 5...Be7 (5...e4 6.Ng1+=) 6.d3 (6.b5!? e4 7.bc6 ef3 8.cd7 Bd7 9.Qf3+=) 6...d6 7.Nbd2 Be6 8.Be2 Qd7 9.Qc2 0-0-0 (9...0-0 10.0-0=) 10.0-0 (10.b5 Nb8 11.Qa4 a6+=) 10...Kb8 (10...g5 11.b5 Nb8 12.Qa4+=) 11.e4 (11.b5 Na5 12.c4 g5+/–) 11...Rc8 (11...Bf6 12.Rfd1=) 12.Rfd1 g5 13.h3 (13.b5 Nd8 14.d4 g4+=) 13...f5 14.ef5 (14.d4 ed4 15.b5 Ne5+=) 14...Bf5+= 15.Ne4 Be4 (better is 15...g4!? 16.hg4 Ng4+=) 16.de4+= Rhf8? (16...g4 17.hg4 Ng4 18.b5+=) 17.a3 (17.b5 Nd8 18.Ne5 Qe6+–) 17...a6? (better is 17...g4!? 18.hg4 Ng4+= (worse is 18...Qg4 19.Ne5 Qe6 20.Nc6 bc6 21.b5+/–)) 18.c4 Nd8 19.Rac1 Nc6? 20.Qb1 Bd8? 21.c5 dc5?? 22.Rd7 Be7 23.Re7! Ne7 24.bc5 Rcd8 25.Rd1 Rd1 26.Qd1 Nc6 27.Ne5 Ne5 28.Be5 Kc8 29.Bf3 Rd8 30.Qd8! Kd8 31.Bg4 Ng4 32.hg4 Kc8 33.Bd4 b6 34.cb6 cb6 35.f4 gf4 36.Kf2 h6 37.Kf3 Kb7 38.Kf4 b5 39.g3 a5 40.g5 hg5 41.Kg5 a4 42.Bh8 b4 43.ab4 a3 44.Kf4 a2 45.g4 a1Q 46.g5 Qa8 47.Bf6 Qc8 48.g6 Qe8 49.g7 Qe6 50.Kg5? Qg8?? 51.Kg6–/+ Kc8 52.e5 Kd7–/+ 53.e6?? Ke6–+ 54.Ba1 (54.Ba1–+). Fournier,Frederic (2020) – Uzumaki95, Active Blind, 2008.

3.d4!? +=.

3.e3 b5 4.Nf3 a6 5.d4 e6 6.Bd3 (6.a4 ba4 7.e4 Ng8+/–) 6...d5 (6...a5 7.ba5 Ra5 8.e4+=) 7.Bb2 (7.a4 ba4 8.e4 Bd7+/–) 7...Bb7 8.Nbd2 (8.a4 ba4 9.Qa4 Bd6+=) 8...Bd6+= 9.0-0 Qe7 10.Qc2 0-0-0 (10...e5!? 11.e4 de4 12.Ne4 f5 13.Nd6 cd6 14.Bf5 Nf5 15.Qf5 Qf7 16.Qf7 Kf7+=) 11.Rfe1 (11.a4 Na7+–) 11...Kb8 (11...e5 12.e4 (12.Bh7 g6–/+) 12...de4 13.Be4+/–) 12.e4 (12.a4 Na7+–) 12...de4 13.Ne4 (13.Re4 f5 14.Re2 Bf4+/–) 1–0. Fournier,Frederic (1735) – fcastellani, Active blind, 2011.

3.e3 d5!?=.

2.c3 g6

3.e3 Bg7 4.Bb2 Nc6 5.Nf3 (5.b5 Na5 6.Nf3=) 5...b5 (better is 5...Nb4!? 6.Qb3 Nc6+=) 6.a3 (6.d4 a6+=) 6...a5 (6...Rb8 7.d4+=) 7.d4 (7.Bb5 ab4 8.Bc6 dc6 9.ab4 Ra1 10.Ba1 Qd3+/–) 7...ab4 (7...Rb8 8.a4 ba4 9.b5+=) 8.ab4 Ra1 9.Ba1 Bb7 (9...Na7 10.c4+=) 10.Nbd2 (10.Bb5 0-0+/–) 10...Qa8 (10...Na7 11.c4+=) 11.Bd3 (better is 11.Bb5 0-0 12.0-0+/–) 11...Qa1?? (better is 11...Qa4+=) 12.Qa1+– 0-0 13.0-0 Ra8 14.Qb2 Ra4 15.Ra1 Rb4 16.cb4 Nd4 17.Nd4 Bd4 18.ed4 f6 19.Nf3 Nf5 20.Bf5 Bf3 21.gf3 gf5 22.Re1 Kf7 23.Qd2 e6 24.f4 h6 25.Kh1 h5 26.Re3 h4 27.d5 h3 28.de6 de6 29.Qd7 Kg6 30.Qe6 c5 31.Qe7 cb4 32.Re6 b3 33.Qf6 (33.Qf6 Kh7 34.Re7 Kg8 35.Qg7) 1–0. Fournier,Frederic (1990) – nztitakis, Active Blind, 2008.

3.e3 Bg7 4.Bc4 c6 5.Qb3 (5.Nf3 d5 6.Be2 0-0=) 5...b5 (5...d5 6.Be2=+) 6.Be2= d5 7.Nf3 f6 (7...a5 8.d4=) 8.Nd4 (8.a4 ba4 9.Qa4 e5+=) 8...Nf7 (8...e5 9.Nc2=) 9.d3 f5 10.Nf3 (10.f4 a5=) 10...g5 (10...a5 11.Bb2=) 11.0-0 (11.a4 ba4 12.Qa4 g4+=) 11...h5 (11...a5 12.Bb2=) 12.Ne1 (12.a4 g4 13.Nfd2 ba4 14.Ra4 h4+=) 12...g4 (12...a5 13.Bb2=) 13.Nd2 (13.a4 ba4 14.Qa4 h4+=) 13...e5 (13...a5=) 14.c4 (14.a4 ba4 15.Qa4 h4=) 14...dc4 (better 14...e4!? 15.Rb1 ed3 16.Qd3 bc4=+) 15.dc4+= e4 16.Rb1 Be6 17.Bb2?? (17.Qc2 a5+=) 17...Bb2 (better 17...Qd2 18.Bg7 Qe2–+) 18.Qb2+= bc4 19.Bc4 Bc4 20.Nc4 Ke7 (20...Qd5 21.Qb3+–) 21.b5 c5 (21...Qd5 22.b6 Nd7 23.b7+=) 22.Nc2 (22.Ne5 Rh6 23.Nf7 Kf7+–) 22...Nd7 (22...Qd5 23.N2a3+–) 23.a4 (23.Rbd1 Qg8+–) 23...Nb6 (better 23...h4+–) 24.Qb3?? (24.Na5 Ke8+–) 24...Nc4?? (better 24...Qd3 25.Na5 Qb3 26.Nc6 Ke6 27.Rb3 Nd8 28.Nd8 Rhd8–/+) 25.Qc4+– Rc8 (25...Qd6 26.Rfd1 Ne5 27.Qc3+– (27.Rd6?! Nc4 28.Rd5 Rac8+=)) 26.Rfd1 Qb6?? (better 26...Ne5 27.Qc3 Nd3+–) 27.Rd5 (better 27.Rd7! Kf6 28.Rf7 Kg5 29.a5+–) 27...Nd6?? (27...Qe6 28.Rc1 Rhd8 29.Rd8 Qc4 30.Rc8 Ne5–+) 28.Re5+– Kd7 (28...Kf8 29.Qe6 Re8 30.Qf6 Nf7 31.Re8 Ke8 32.Qf5 Rh6+–) 29.Qe6 Kc7 30.Qe7 (30.a5 Qb7 31.b6 Kb8 32.Qd6 Ka8 33.a6 Qb6 34.Rb6 Rh6 35.Rb8 Rb8 36.Qd5 Rc6 37.Qc6 Rb7 38.Qb7) 30...Kb8 31.Rd1 Rh6 32.Qg7 (32.Red5 Qc7 33.Qg5 Re6+–) 32...Nc4 (32...Ne8!? 33.Qg5 Rd6+–) 33.Rf5+– Rd6 Threatening mate: Rxd1 34.Rdd5 (34.Rf1 Qc7 35.Qc7 Rc7 36.Rh5 Rd2+–) 34...Rcd8 (34...Qd8 35.Rf7 Rc7 36.Rc7 Rd5 37.Rb7 Kc8+–) 35.g3?? (better 35.Qg5 a6 36.Qf4 ab5 37.Ne1+– (37.Rc5 Ne5 38.Ne1 Qc5 39.Re5 Qc1 40.Rb5 Ka7 41.Ra5 Kb6 42.Rb5 Ka6–/+)) 35...Rd5–+ 36.Rf6 (36.Rd5 Rd5 37.Ne1 Qd8–+) 36...Qb7 (better 36...Qc7 37.Qh6 Rd1 38.Kg2 Rc1–+) 37.Qg6 (37.Rf7 Qc8 38.a5 Ne5–+) 37...R5d6 (better 37...Ne5 38.Rf7 Ng6 39.Rb7 Kb7–+) 38.Qf5 (38.Rd6 Nd6 39.Qh5 Qd7–+) 38...Rf6 39.Qf6 Qd7 40.Qf4 Nd6 (40...Qc7 41.Ne1 Ne5 42.Qe4–+) 41.Na3 (41.Qg5 Nb5 42.Kg2 h4 43.gh4 Nc7 44.Qc5 Qa4–+) 41...Kc8 42.Qe5 (42.Nb1 Nb5! 43.Kg2 Nd6–+) 42...Nb7 (better 42...Nb5 43.Qc5 Nc7–+) 43.Qh5 (43.Qe4 Qd3 44.Qd3 Rd3 45.Nc4–+) 43...Qd1 44.Kg2 Qf3 45.Kf1 (45.Kg1 Rd1) 45…Rd1 0–1. Mphilliber – Delboy Smith (1790), ChessWorld.net, 2009.

3.e3 Bg7 4.Nf3 0-0 5.Bb2 (5.d4 d5=) 5...d6 (5...e5 6.Be2=) 6.a3 Nc6 7.d4 b5? (7...e5 8.Nbd2=) 8.Nbd2 (8.Bb5 Bd7+–) 8...d5 (8...Rb8 9.a4 a6 10.Bd3+=) 9.Bd3 (9.Bb5 Bd7+–) 9...Be6? (9...a6 10.a4 Bf5 11.Nb3+=) 10.Qc2 (better is 10.Bb5!? Qd6 11.e4+–) 10...a6 11.0-0 Na7 12.Rfe1 c6 13.Rac1 Qd7 14.e4 de4 15.Ne4+/– Bd5 16.Ned2 Ng4 17.Be4 Be4 18.Ne4+/– Nf6 19.Nf6 ef6 20.Re2 Rfe8 21.Rce1 Re2 22.Re2 Re8 23.Qd1 Re2 24.Qe2 Nc8 25.h3 Nd6 26.Qe3 a5 27.Qc1 ab4 28.ab4 Nc4 29.Nd2?? Nb2?? 30.Qb2= Qa7 31.Qc1 Qa4 32.Nf3 Qa8 33.Ne1 Qf8 34.Nf3 c5?? 35.dc5+– f5 36.Ne1 Bc3?? 37.Qc3+– f6 38.c6 Qh6 39.c7 Qg5 40.c8Q (40.c8Q Kg7 41.Q3c7 Kh6 42.Qf8 Kh5 43.Qh7 Qh6 44.Qhh6) 1–0. Fournier,Frederic (2005) – nztitakis, Active Blind, 2008.

2.Nc3 e5

3.a3 a5 4.b5=.

3.a3 c6 4.e4 (4.d4 Ng4 5.e4 ed4 6.Qd4=) 4...g6 (4...a5 5.b5=) 5.g3 (5.d4!? ed4 6.Qd4+/–) 5...Bg7 6.Qf3 (6.d4!? d6 7.d5=) 6...0-0 7.Bc4 b5 8.Bb3 d6 (8...a5 9.ba5 d6 10.h3+=) 9.d3 (9.a4 ba4 10.Ra4 Be6 11.Be6 fe6=) 9…Bg4 (9...Bg4 10.Qe3 a5 11.ba5 Nd7+=). warlokthebarstad – Shuttlebasher, ChessWorld.net, 2009.

3.e4 Bb4–/+ 4.Nd5 (4.Nf3 d6–/+) 4...Bc5 (4...Ba5 5.Nf3 0-0 6.Bc4–/+) 5.Qh5 (5.d4 Bd4 6.c3 c6 7.cd4 cd5 8.de5 de4 9.Bh6 gh6=+) 5...0-0 (5...d6 6.d4 Bd4=) 6.d4= Bd4 7.c3 c6 8.Bh6 (8.cd4!? cd5 9.de5=+) 8...cd5–/+ 9.cd4 gh6 10.Qh6 (10.Qe5!? de4 11.Qg3 (11.Qe4?? Re8 12.Qe8 Qe8 13.Be2 Nc6–+) 11...Kh8 12.Qe5 f6 13.Qd6–/+ (13.Qe4 Re8 14.Qe8 Qe8 15.Be2 Qe4–+)) 10...de4–+ (10...ed4?! 11.ed5 Qa5 12.Kd1 Qd5 13.Bd3=) 11.Rd1 ed4 12.Rd4 d5 (12...Qa5 13.Rd2–+) 13.Bc4?? (better is 13.Ne2–/+) 13…Qa5–+ (14.Qd2 Qd2 15.Kd2 dc4 16.Rc4 Be6–+; 13...dc4?? 14.Rd8 Nd7 15.Qg5 Kh8 16.Rf8 Nf8 17.Qe5 Kg8 18.Qe4+–) 0–1. Wiacheslav – jaskier (2195), internet, 2007.

2.Nc3 e6

3.a3 d5 4.d4 Nd7 (4...Nf5 5.Nf3=) 5.e3 (5.Bh6 gh6 6.e4 a5+=) 5...Nf6 6.Nf3 a5 7.b5 c5 8.a4 (8.bc6 bc6 9.Rb1 Bd6=) 8...b6 (8...cd4 9.Qd4 Nf5 10.Qd3=+) 9.Ba3 Qc7 10.Be2 Bd6 11.h3 (11.dc5 Bc5 12.Bc5 Qc5=) 11...Bb7 12.Qd2 (12.dc5 Bc5 13.Bc5 Qc5=+) 12...Rc8=+ 13.Bd3 cd4 (better is 13...Ne4 14.Be4 de4–/+) 14.ed4?? (better is 14.Nd4 e5 15.Nf5 Ba3 16.Ra3–/+) 14...Bf4–+ 15.Qf4 Qf4 16.Ne2 Qc7 17.0-0 Nf5 18.Rfc1 Nd6 0–1. Wiacheslav – thotares (1730), internet, 2007.

3.a3 d5 4.Nf3 c5 (4...d4 5.Ne4=) 5.Bb2 (5.bc5 Qa5+=) 5...Nf5 (5...Ng4 6.bc5 Bc5 7.d4=) 6.bc5 Bc5 7.e4 (7.e3 Nc6=) 7...de4 (7...Bf2 8.Kf2 de4 9.Ng1 Qh4 10.Ke2=) 8.Ne4= Bd4 9.Nd4 Nd4 10.c3 Qd5 (10...Nf5!?+=) 11.d3+/– (11.cd4?! Qe4 12.Qe2 Qd5=) 11...Qb3 12.Rb1 (< 12.cd4 Qb2 13.Qc1 Qc1 14.Rc1 Nc6=+) 12...Qd1 13.Kd1 Ndc6 14.Bc1 0-0 15.Kc2 Nd7 16.Be2 b6 (16...Nb6 17.Bg5+/–) 17.d4 Ne7 18.Nd6 Nf6 19.Bf3 Rb8 20.Re1 Ba6 21.Bf4 Nfd5 (21...Rbd8 22.c4+/–) 22.Bg3 Rbd8 23.c4 Rd6 (23...Nc8 24.c5+/– (< 24.cd5 Nd6 25.de6 fe6+=; 24.Bd5 Nd6 25.Be4 Nc4–/+)) 24.Bd6+– (24.cd5?! Rd7 25.de6 fe6+=) 24...Bc4 (24...Rc8 25.c5+–) 25.Bd5 (25...Nd5 26.Bf8 Kf8 27.Kd2+–) 1–0. jaskier (2205) – Wiacheslav, internet, 2007.

2.c4 Nc6

3.a3 e5 4.Nc3=.

3.a3 e6 4.d3 (4.d4 Ng8+=) 4...Be7 (4...Nf5 5.Nf3=) 5.e3 (5.Bh6 gh6 6.e3 Rg8+=) 5...Bf6 6.h3?? (better is 6.d4=) 6...Ba1–+ 7.d4 e5 8.Nf3 (8.Qe2 ed4 9.ed4 Qe7 10.Qe7 Ke7–+) 8...ed4 9.ed4 (9.b5 Ne7 10.ed4 Nef5–+) 9...Nf5 10.Be3 (10.Qe2 Kf8 11.d5 Ncd4 12.Nd4 Bd4–+) 10...Qe7 11.Be2 (11.Qd3 Nfd4 12.Nd4 Nd4–+) 11…Ne3 (11...Ne3 12.fe3 Qe3–+) 0–1. helmisflorin – pierre (2090), Tuebingen internet, 2012.

3.b5+= Ne5 4.e4 g6? (4...Ng6 5.d4=) 5.Nc3 (better is 5.d4!? Neg4 6.e5+–) 5...d6+= 6.d4 Nd7 7.Be2 e5 8.Nf3 Bg7 9.0-0 (9.c5 dc5 10.dc5 Nc5 11.Qd8 Kd8 12.Bh6 Bh6 13.Rd1 Nd7 14.Ne5 Bg7+=) 9...b6 (9...ed4 10.Bg5 f6 11.Bh6 Bh6 12.Nd4+=) 10.Bg5+/– f6 11.Bd2 (11.Be3 Ng4+/–) 11...Bb7 (11...a6 12.Nd5+/–) 12.Nd5 (12.d5 a6+/–) 12...Nf7 13.Qc2 (13.Re1 0-0+/–) 13...c6 (13...0-0 14.a4+/–) 14.bc6 Bc6 15.Rac1 (15.Qd3 0-0+/–) 15...Bd5 (15...0-0 16.Qd3+/–) 16.cd5 0-0 17.Bb5 a6 18.Bc6 White gets the initiative 18...Rc8 (18...Ra7 19.Rfe1+/–) 19.Qa4 Nb8 20.Bb7 Rc1 21.Rc1 b5 22.Qc2 Bh6 23.Bh6 Nh6 24.Bc8 Qb6 25.Be6+– Kh8 26.Qd2 Kg7 27.Qe3 a5 28.de5+– Qe3 29.fe3 fe5 30.Ng5 Ng8 (better is 30...Na6 31.Rc6 Ra8 32.Rd6 Ra7+–) 1–0. magnus75 – coolerdude, ChessWorld.net, 2004.

2.c4 e5

3.a3 a5 4.b5=.

3.a3 a6 4.Bb2 (4.d4 a5 5.b5 ed4 6.Bh6 gh6 7.Qd4 Qg5 8.Qe4 Kd8+=) 4...d6= 5.e4 Bg4 (5...Be7 6.Nf3=) 6.f3 (6.Be2 Be2 7.Ne2 Qh4+=) 6...Be6= 7.Nc3 Nd7 (7...Be7 8.Nd5=) 8.Bd3 (8.d4 ed4 9.Qd4 Ne5=) 8...Qg5 (8...c6 9.Nce2+=) 9.Qe2 (9.g3 c6+=) 9...c5 (9...c6 10.Nd5 Rc8 11.Rc1+=) 10.h4 (10.Nd5!? Bd5 11.ed5=) 10...Qg3+= 11.Qf2 Qf2 12.Kf2 Be7 13.g4 f6 14.Nge2 0-0-0 15.bc5 Nc5+= 16.Ke3 g6 17.Nd5= Bd5 18.cd5 Kb8 19.Bc2+/– Nf7 20.d4 Nd7 21.a4 Nb6 22.Bb3 Rc8 23.Rac1 Nd7 24.f4 ef4 25.Nf4 Rce8 26.Ne6+– Rc8 27.Rc8 Rc8 28.Rc1 g5 29.Rc8 Kc8+/– 30.h5 Nf8 31.Bc3 b6 32.Bc4 a5 33.Ba6 Kb8 34.Nf8 Bf8 35.Bb5 Kc7 ½–½. jevaisbien – RaymundG, internet, 2010.

3.a3 Nc6 4.b5 Nd4 5.e3=.

3.a3 Nc6 4.Nc3=.

3.a3 d5 4.cd5 Qd5 5.Nc3 Qd4 (5...Qe6 6.Nf3=) 6.e3 (6.Nf3 Qd6+=) 6...Qg4= 7.Bb2 (7.Qg4 Ng4 8.d4 Bd6=) 7...Bd6 8.h3 (8.h3 Qe6 9.Ne4=). jevaisbien – BRATULEANU, internet, 2010.

3.a3 Be7 4.Nc3 (4.d4 a5 5.Bh6 gh6=) 4...0-0 5.d3 Nf5 6.e3 c6 7.Nf3 d5 (7...a5 8.b5= (worse is 8.Ne5 ab4 9.Nb1 ba3–/+)) 8.cd5 (8.Ne5 a5 9.Rb1 ab4 10.ab4 dc4 11.Nc4 b5+=) 8...cd5 (8...a5 9.dc6 (worse is 9.Ne5 ab4 10.Nb1 ba3–/+) 9...ab4 10.c7 Qc7 11.Nd5=) 9.Be2 (9.e4 de4 10.de4 Qd1 11.Nd1 Nd4 12.Nd4 ed4=) 9...Be6 (9...d4 10.Ne4+=) 10.Ne5?? (better is 10.0-0=) 10…Qc7–+ (10...Qc7 11.Nb5 Qe5–/+) 0–1. helmisflorin – R_REZAEI (1890), Tuebingen internet, 2012.

3.a3 Qf6 4.Bb2 (4.Nc3 a5 5.b5 Ng4=) 4...b6 (4...d6 5.Nc3=) 5.e4 (5.Nf3 Nc6+=) 5...c5 (5...Bb7 6.Nf3 Be4 7.Ne5=) 6.b5 (6.Nf3 cb4 7.ab4 Bb4 8.Ne5 Qe6+=) 6...d6 (6...a6 7.Nc3 Bb7 8.Nf3=) 7.h3 (7.Nc3 Bb7+=) 7...Qh4 (7...Be7 8.Nc3 Be6 9.Qf3=) 8.Nc3+= f5 (8...Qd8 9.Nf3+=) 9.ef5 (better is 9.Nf3 Qd8 10.Bd3+=) 9...Nf5? (better is 9...Bb7+=) 10.Qf3 (better is 10.Bd3 d5 11.Nd5+–) 10...Nd4? (10...e4 11.Ne4 Qe7+–) 11.Qa8 Nc2 12.Kd1 Na1 13.Ba1 Qf2 14.Nf3 Qg3 15.Qb8 Kd8 16.Nd5 Ke8 17.Qc8 Kf7 18.Qd7 Kg6 19.Qe6 Kh5 20.Be2 g6 21.Ne5 Kh6 22.Nf7# 1–0. jevaisbien – chessdoctor79, internet, 2010.

3.a3 g6 4.Bb2 Bg7 5.e3 0-0 6.c5 Re8 7.Nf3 Nc6 8.Bc4 d5 9.Ba2 d4 10.0-0 Bg4 11.h3 Be6 12.Be6= Re6 13.ed4 ed4 14.d3 Nf5 15.Re1 Re1 16.Qe1 Qd7 17.Nbd2 Re8 18.Ne4 Ne5 19.Ne5 Be5 20.f4 Bg7+= 21.Qf2 Ne3 22.Re1 f5 23.Qh4?? fe4–+ 24.de4 Re4 25.Qf2 Qe7 26.Bc1 Nc2! 27.Re4 Qe4 28.Qf1 d3 29.Bd2 Bd4 30.Kh1 Qe2 31.Qc1 Be3 32.Be3 Ne3 33.Qg1 d2 (33...d2 34.f5 d1Q 35.Kh2 Qg1 36.Kg1 Qg2#) 0–1. DWSU (1655) – sjoukje10 (1750), ChessWorld.net, 2010.

3.Bb2 Bb4+= 4.Nf3 d6–/+ 5.a3 Ba5 (5...Bc5 6.e3–/+) 6.e3 (6.c5 0-0–/+) 6...0-0 7.Nc3 Bc3 (7...Bg4 8.Qb3–/+) 8.Bc3 Bg4 (8...Nc6 9.d4 ed4 10.Nd4–/+) 9.h3 Bf5 (9...Bf5 10.d4 e4–/+; 9...Bh5 10.d3–/+) 0–1. magnus75 – jjmrk2, ChessWorld.net, 2003.

3.Nc3 Bb4!? 4.Nf3 d6 –/+.

3.Nc3 d6 4.d3 Be7 (4...Ng4 5.Nf3=) 5.e3 (5.Bh6 gh6 6.Nf3 Rg8+=) 5...g6 (5...0-0 6.Nd5=) 6.Nf3 0-0 7.h3 (7.Be2 Bf6 8.e4 Bg7+=) 7...f5 8.Bb2 c6 9.Be2 Nf7 10.0-0 Na6 11.a3 Bf6 12.b5 cb5 13.cb5 Nc5 (13...Nc7 14.Rc1+=) 14.Nd5 Be6 15.Nf6 Qf6 16.d4 Nd7?? (16...e4 17.dc5 Qb2 18.Nd4+=) 17.Rc1?? Rac8? 18.Qd2?? Bd5?? 19.de5+– Qe6 20.a4?? de5+= 21.Rfd1 Rc1 22.Rc1 Bf3 23.Bf3+/– b6 24.Rc7 Rd8 25.Bc6?? Nd6?? 26.Bd7 Qf6 27.f4 Qe7 28.Be5 Rd7 29.Rd7 Qd7 30.Qd6 Qf7 31.Qd8 Qf8 32.Qf8 Kf8 33.Bb8 (33.Bb8 h6 34.Ba7+–) 1–0. helmisflorin – ab3, Tuebingen internet, 2012.

3.c5 d6+= 4.d4 g6 5.e3 Bg4 6.f3 Be6 7.Bb5 c6+= 8.Bd3 Bg7 9.Ne2–/+ Nf5 10.e4 Nd4–/+ 11.Nd4 ed4 12.0-0 d5 13.Nd2 de4 14.fe4 0-0 15.Nf3 a5 16.Bd2 Na6 17.Ba6 Ra6–/+ 18.ba5 d3 19.Rb1 Qd7 20.Ng5 Ba2–+ 21.Rb6 Bd4 22.Kh1 Bc5 23.Ra6 ba6 24.h3 h6 25.Nf3–/+ f6 26.Bh6+= Rf7 27.Nh4 Rh7–/+ 28.Qd2 Bf7 29.Rf6 Qd4–+ 30.Nf3?? Qf6 31.Qd3 Rh6 32.Qa6 Qa1 33.Kh2–+ Bd6 34.e5 Be5 35.g3 Qb2 36.Kg1–+ Bg3 37.Qc8 Kg7 (37...Kg7 38.Kh1 Qf2 39.Qd7 Qf3 40.Kg1 Qf2 41.Kh1 Qh2#) 0–1. Eternal Life – _Grund_ (1655), ChessWorld.net, 2009.

2.c4 e6

3.a3 c6 4.Nf3 (4.d4 Ng8+=) 4...d5= 5.c5 b6 (5...Be7 6.d4=) 6.d4 Nf5 7.Nc3 Nd7 (7...Be7 8.Bf4=) 8.e4+= Ne7 9.ed5 ed5 (9...Nd5 10.Nd5 ed5 11.Bd3+=) 10.Bf4 (10.Bd3 a5 11.Rb1 ab4 12.ab4 g6+=) 10...Bb7 (10...Ng6!? 11.Be3 Be7+=) 11.Bd3+/– h6 (11...Ng6 12.Bg6 fg6 13.Qe2 Qe7 14.Ra2+/–) 12.h4 (12.0-0!?+–) 12...Ng6+/– 13.Bg6 fg6+= 14.Qd3 Qf6 15.Ne5 Ne5 16.Be5 Qf5 17.Qe2 0-0-0 18.g4 Qf7 19.f4 Re8+= 20.0-0-0 b5 21.Qd3 Be7 22.Rdf1 Bf6 23.Qh3 Kd8 24.Qf3 Rhf8 25.g5 Be5= 26.de5 h5 27.Qe3+/– a6 28.Ne2 Bc8 29.Nd4 Qc7 30.Kb2 Bf5 31.Rf2 Rf7 32.e6 Rfe7+= 33.Re1 a5 34.ba5 Kc8 35.Qc3 Be6+= 36.Ne6 Re6+= 37.Re6 Re6 38.f5 gf5–/+ 39.Rf5 Re2 40.Kb3? Re4?? 41.Qh3 Rg4–/+ 42.g6?? Rg3–+ 43.Rf3 Rh3 (43...Rh3 44.Rh3 Qa5–+) 0–1. jevaisbien – ANZARBOND (1630), internet, 2010.

3.a3 d5 4.d4=.

3.Bb2 d5 4.c5=.

3.Bb2 Rg8 4.b5 b6 (4...d5 5.e3=) 5.Nc3 Bb7 6.e3 g5 7.Qh5 d6 8.Bd3 Bg2–/+ 9.Be4 Bh1 10.Bh1 Nd7 11.Bc6 Rb8–/+ 12.Ne4 e5 13.Nf3=+ Qe7 14.Nfg5 Kd8 15.Nh7 Bg7 16.Nc3 Nf6 17.Nf6+= Qf6 18.Nd5 Qf5 19.Qh4+= f6 20.Nb4 Kc8 21.Bd5 Re8 22.Na6 Ng4 23.f3 Ne3 24.de3+– Rh8 25.Qg3 Qg5 26.Qg5 fg5 27.h3 Kd7 28.Nb8 Rb8 29.Ke2 Rh8 30.Rh1 Ke7 31.f4 gf4 32.ef4 Rh5 33.fe5 1–0. Fournier,Frederic – Van Esbroeck, corr SOK–93–98, 1995.

2.d3 e5

3.c3 Qf6 4.e4 a5 5.b5 Bc5 6.Nf3 d6 7.h3 Be6 8.d4 ed4 9.cd4 Bb4 10.Bd2 c5 11.a3+= Bd2 12.Qd2 cd4 13.Qd4+= Qd4 14.Nd4 Nd7 15.Ne6 fe6= 16.a4 Rc8 17.Nd2 0-0 18.Nc4+= d5 19.Na5 Rc2? 20.ed5 ed5 21.f3?? b6 22.Nc6 Nc5 23.Ne7 Kf7=+ 24.Nd5 Rb8?? 25.Kd1+– Rf2 26.Bc4 Kf8 27.g4 Nf7 28.f4 Nd6 29.Be2 Re8 30.Re1 Nde4 31.Ra3 Rd8= 32.Bc4 Rd2 33.Kc1 R8d5 34.Bd5 Rd5 35.Rd1 Rd1 36.Kd1 Na4 37.Kc2 Nac5 38.Ra8 Kf7 39.h4 Ne6 40.f5 Nd4?? 41.Kd3+– Nb5 42.Ke4 Nd6 43.Kd5 Ne8 44.Kc6 Nf6 45.g5 Ng8 46.Kb6 g6 47.Ra7 Kf8 48.f6 h6 49.Kc6 hg5 50.hg5 (50...Nf6 51.gf6 Kg8 52.f7 Kf8 53.Kd6 Kg7 54.Ke7 Kh6 55.f8Q Kg5 56.Ra4 Kh5 57.Kf6 g5 58.Qh8) 1–0. Wiacheslav (1610) – pietshaq (1660), internet, 2007.

3.Bh6 gh6 4.c3 d5 5.Qc1 Be6 6.f4 Nd7 7.Nf3 Qf6 8.fe5 Ne5 9.Qe3 Nf3 10.Qf3 Qf3 11.gf3 Be7 12.a3 Bh4 13.Kd1 Rg8 14.Nd2 Rc8 15.d4 c6 16.e3 Ke7 17.Bd3 Bh3 18.Kc2 Bg2 19.Rhd1 Bh3 20.Rg1 Bf2 21.Rg8 Rg8 22.e4 Rg2 23.Bf1 Rh2 24.Bh3 Rh3 25.e5 Rh2 26.Kd3=+ h5 27.Nb3 b6 28.f4 Rh3 29.Kc2 Rf3 30.Rf1 Rf4–+ 31.Nc1 Bg3 32.Rh1 h4 33.Ne2 Rf2 34.Kd3 Rf3 35.Kd2 Ke6 36.Ng3 hg3 37.Rh6 Kf5 38.Rh7 Ke4 39.Rg7 Rf2 40.Ke1–/+ Rf3 41.Kd2 a5 42.Rg4 Kf5 43.Rg7 ab4 44.Rf7? Ke4 45.Rf3 Kf3 46.e6 g2 47.e7 bc3 48.Kc3 g1Q 49.e8Q Qe3 50.Qe3 Ke3 51.a4 Ke4 0–1. pietshaq (1675) – Wiacheslav, internet, 2007.

2.d3 Nf5

3.e4 Nd4 4.Bb2 e5= 5.Bd4 ed4=+ 6.a3 c5 7.bc5 Bc5 8.g3 Qa5 9.Nd2 0-0 10.Ne2 d5 11.ed5 (11...Re8 12.Bg2=+). Stabenow,Juergen – Rettenbacher,W, corr SOK–87–08, 1988.

3.e4 Nd4 4.c3 Ndc6 +=.

3.e4 Nd4 4.c3 Ne6 5.f4 g6 6.f5 Ng7 7.g4 e6 8.Qf3 ef5=+ 9.gf5 Qh4 10.Kd1 Qh5 11.Qh5+= Nh5 12.Be2 Nf6 13.Bg5 Bg7 14.e5 Nd5 15.f6 Bf8 16.Bf3 Nb6 17.Nd2 h6 18.Be3 d6 19.d4 Nc6 20.b5 Nd8 21.Ne2 Nd7 22.Nc4 de5 23.de5+= Ne6 24.a4 Bc5 25.Bd4 0-0 26.Re1 Rd8+= 27.Kc2 a6 28.ba6 Ra6+= 29.Ne3 Nb6 30.Bc5 Nc5=+ 31.a5 Nba4 32.Nd4+/– Ra5 33.Bd5 c6 34.Nc4 34...Ra6=+ 35.Bf3 Ne6 36.Nd6+= Nd4 37.cd4 Be6 38.Red1 b5 39.Rdc1 Rb6 40.Kd3 Nb2= 41.Kc3 Nc4 42.Kb4 Nd6=+ 43.ed6 Rd6?? 44.Kc5+– b4 45.Kd6 b3 46.Ra8 Kh7 47.Rb1 Bf5 48.Rb2 g5 49.Bc6 h5 50.Kc5 Rc6 51.Kc6 Be4 52.d5 g4 53.Rb3 h4 54.Ra4 Bc2 55.Rba3 Ba4 56.Ra4 (56...Kg6 57.d6+–) 1–0. thotares (1725) – pietshaq (1695), internet, 2007.

3.e4 Nd6 4.Nf3=.

2.d3 g6

3.Bb2 f6 4.Nd2 e5 5.a3 d5 6.e4 d4 7.Ngf3 Be7 8.Be2 b6 9.Nc4 0-0 10.0-0 Bd7 11.Qc1 c5? 12.Qh6+– 1–0. Tragosso (1695) – Honeybrook, ChessWorld.net, 2009.

3.Bb2 f6 4.e4 Bg7 5.Nd2 0-0 6.Ngf3 a6 7.c4 Nc6 8.Qb3 e5 9.c5 Kh8 10.Be2 d6 11.d4 dc5 12.bc5 ed4 13.Nd4?? Nd4–+ 14.Bd4 Qd4 15.Rc1 Ng4 16.Bg4 Bg4 17.f3 Rad8 18.Qc3 Be6 19.Qd4 Rd4 20.c6 bc6 21.Rc6 Ba2 22.Rc7 Rfd8 23.Rc2 Bb1! 24.Rb2 f5 25.Rb1 Rd2 26.0-0 fe4 27.fe4 Re2 28.Rbd1 Rc8 29.Rc1 Re8 30.Rc4 R2e4 31.Rc6 Bd4 32.Kh1 Re1 33.Rc1 Rf1 34.Rf1 a5 35.h3 Bc3 36.Kh2 a4 37.Rc1 Bb2 (37...Bb2 38.Rc4 Ra8–+) 0–1. _Grund_ (1680) – Lats (1665), ChessWorld.net, 2010.

3.Bb2 Rg8 4.Nd2 d5 5.Ngf3 e6 6.a3 Nc6 7.g3 Bd7 8.Bg2 Nf5 9.e4 Nfe7 10.c4 f5 11.0-0 Bg7 12.Bg7 Rg7 13.ed5 Nb8 14.de6+– Be6 15.Re1 Bg8 16.d4 Nd7 17.Ng5 c6 18.Ne6 (18...Be6 19.Re6+/–) 1–0. thotares (1700) – yaunootz (1630), internet, 2007.

2.d4 d5

3.Bb2 e6 4.a3= a6 5.e3 Nf5 6.h3 Nd6 7.Bc3 b5 8.Nf3 h6 9.Bd3 Nd7 10.0-0 Be7 11.Ne5 Ne5 12.de5 Nc4 13.Bc4 bc4 14.Nd2 f6? 15.ef6 Bf6 16.Bf6 Qf6+= 17.c3 Bb7 18.Qc2 0-0= 19.Nf3 e5 20.Rad1 c6 21.a4 Bc8+= 22.a5 Bf5 23.Qd2 Bd3 24.Rfe1–/+ e4 25.Nd4+= g6 26.f3 Rac8 27.f4 c5 28.bc5 Rc5 29.Ra1 Rcc8 30.Ra2 Rb8 31.Raa1 Rf7–/+ 32.Qf2 Rfb7 33.Qg3 Kh7 34.h4 h5 35.Qg5 Qg5–/+ 36.hg5 Rb2 37.Ne6 Rd2 38.Nc5?? Rbb2–+ 39.Nd3 cd3 40.Rad1 Rdc2 41.Rc1 d2 (41...d2 42.Kh1 Rc1 43.Rd1 Rd1 44.Kh2 Rh1 45.Kh1 d1Q 46.Kh2 Qf3 47.f5 Qg2#) 0–1. Roderick64 (1745) – sjoukje10, ChessWorld.net, 2010.

3.Nf3 Nf5 4.c3 Nd6 5.Bf4 Bf5 6.e3 e6 7.Bd3 Bd3 8.Qd3 Nd7 9.Nbd2 a5 10.ba5 Ra5 11.0-0 Nb6 12.Be5 Ndc4 13.Nc4 Nc4 14.Rab1 (14.e4 Ne5 15.Ne5 Bd6=) 14...b6 (< 14...Ra2 15.Rb7 Nd6 16.Bd6 Bd6 17.Qb5 Ke7 18.c4 dc4 19.Qc4+=; 14...Ne5?! 15.Ne5 f6 16.Nf3=) 15.e4 c6 16.Qe2 Qa8 17.Ng5 (17.Ra1 Ra3=+) 17...Qa7 (17...Ne5 18.ed5 h6 19.Ne6 fe6 20.Qe5=) 18.ed5 cd5 (18...ed5?? 19.Bg7 Be7 20.Bh8+–; 18...Ne5?! 19.de5 cd5 20.Rb2=+) 19.Rfe1 (19.Qh5 Ne5 20.de5 g6=) 19...h5 (19...Ra2 20.Qh5 A) 20...Ne5? 21.Ne6 Nf3 22.gf3+– (22.Qf3 fe6 23.Qd5 Be7 24.Qe6 Kd8 25.Qd5 Ke8 26.Re7 Ke7–+); B) 20...Qe7–/+) 20.Ra1 Qd7 21.Nf3 h4 22.h3 Ra3 23.Rac1 b5 (23...Ne5 24.Ne5 (24.de5?! Qa4=) 24...Qb7 25.Qb5 Kd8 26.c4+–) 24.Rc2 f6 25.Bf4 g5 26.Bc1 Ra6 27.Nd2 Bd6 28.Nc4 bc4 29.Qf3 0-0 30.Qg4 Qh7 31.Rce2 Qf5 32.Re6 Qg4 33.hg4 Kf7 34.Rd6 Rd6 35.Ba3 Ra6 36.Bf8 Kf8 37.Re2 Kf7 38.f3 Ra3 39.Rc2 Ke6 40.Kh2 f5 41.Kg1 f4 42.Kf1 Kd6 43.Ke2 Kc6 44.Kd2 Ra7 45.Kc1 ½–½. Steve9843 – Gls1968, ChessWorld.net, 2005.

3.Nf3 Nf5 4.Bd2 g6 5.e3 Bg7 6.c4 dc4 7.Na3 0-0 8.Nc4 Nd6. mafergut – DeMaddin, ChessWorld.net, 2003.

3.Bh6 gh6

4.b5 Rg8 5.Nc3 Bf5 6.Nf3 e6 7.Rb1 Nd7 8.e3 Rc8 9.Qe2 c6 10.bc6 Rc6 11.Rb3 Qa5 12.Qb5 Qc7 13.Kd2 a6 14.Qa4 b5 15.Bb5 ab5 16.Qa8 Ke7 17.Ne1 (17.Nh4 Nb6 18.Nf5 Kd7 19.Nh6 Na8 20.Ng8–+) 17...b4! 18.Rb4 Rc3 19.Rb2 Rg2! 20.Rf1 (20.Ng2 Rc2) 20...Qc4 21.Ng2 (21.Qa5 Rc2! 22.Rc2 Qf1 23.Ng2 Qf2 24.Kd1 Qc2 25.Ke1 Qg2 26.Kd1 Qg1 27.Qe1 Bg4 28.Kd2 Qh2 29.Kc3 Qa2 30.Qd2 Qa3 31.Kc2–+) 21...Rc2 22.Rc2 Qc2 23.Ke1 Bd3 (24.Qa3 Kf6 25.Nf4 Bb4 26.Qb4 Qc1#) 0–1. Bestia02c – Francesca078, computer chess game, 2000.

4.e3 e5 5.de5 Bb4 6.c3 Be7 7.Nf3 0-0 8.Qb3 c6 9.c4 Qa5 10.Nbd2 Nd7 11.cd5 cd5 12.Rb1 f6 13.ef6 Rf6 14.Nd4 Rf2 (14...Qd2) 15.Qc2 (15.Kf2 Qd2 16.Kf3 Ne5 17.Kf4 Ng4 18.Qd5 Kh8 19.Qb3 Ne3 20.Kf3 Qd4 21.h3 Be6 22.Qe6 (22.Qe3 Rf8 23.Qf4 Qf4 24.Ke2 Bg5 25.Rb2 Bc4 26.Ke1 Qc1) 22...Rf8 23.Ke2 Nc2 24.Qc8 Qe4 25.Kd1 Ne3 26.Kd2 Nf1 27.Rbf1 Rc8 28.Rf8 Bf8 29.Rc1 Rd8 30.Kc3 Qb4 31.Kc2 Rd2) 15...Rf8=+ 16.Rb5 Qa3 17.Rb3 Qc5 18.Rc3 Qa5 19.N2b3 Qb6 20.Be2 (better is 20.Kd1!?=+) 20...Bb4–+ 21.Bf3 Nf6 22.0-0 Bc3 23.Qc3 Bd7 24.Qd3 Rac8 25.a3 Qa6 26.Qa6 ba6 (27.Rc1 Rc1 28.Nc1 Bb5–+) 0–1. Alissa – Papov, ChessWorld.net, 2005.

4.e3 Rg8 5.Ne2 Nd7 6.Nf4 c6 7.b5 e5 8.de5 Ne5 9.bc6 bc6 10.Nd2 Bg4 11.Be2 Be2 12.Qe2 Bb4 13.0-0-0 Ba3 14.Kb1 Qb8 15.Nb3 a5 16.e4 a4 17.ed5 ab3 18.cb3 Kf8 19.dc6 Nc6 20.Ne6 fe6 21.Qf3 Kg7 22.Qc6 Qe5 23.Rd7 Kh8 24.Qc2 Rg7 25.Rg7 Kg7 26.f3 Rc8 27.Qd2 1–0. London_Patzer – Alissa, ChessWorld.net, 2005.

4.Nf3 Nd7 5.e3 e5 6.de5 c6 7.c4 (7.Qd4 Bg7+=) 7...Bb4= 8.Nbd2 Nc5 9.Be2 (9.cd5 Qd5 10.Qc2 Be6=) 9...Rg8= 10.Qb1 Qa5 (10...Bd2 11.Nd2 Rg2 12.Bf3=) 11.Qh7 Rg2 12.Qh8 Kd7 (12...Ke7!? 13.cd5 cd5 14.Qf6 Ke8 15.Qh8 Ke7 16.Qf6 Ke8 17.Qh8 Ke7=) 13.Qh6+= Rg6 14.Qh7 Ke7 15.Qh4 Kf8 16.cd5 cd5 17.Qh8 Ke7 (17...Rg8 18.Qh6 Ke8 19.Qh7+=) 18.Rd1+/– Ne4. hooks – Crapov, ChessWorld.net, 2006.

4.Nf3 e5 5.de5 Bb4 6.c3 Bc5 +=.

4.Nf3 e5 5.Ne5 Bb4= 6.c3 Bd6 7.Nf3 c6 8.e3 Rg8 9.g3 (9.Nbd2 Bf5+=) 9...Bf5 10.Bd3 Bg6 11.0-0 (11.Qc2 Qe7+=) 11...Nd7 (11...Qe7 12.c4=) 12.c4 (12.Qc2 Qf6 13.Nbd2 c5+=) 12...dc4= 13.Bc4 Nb6 14.Bd3 Qf6 15.e4 Bb4 16.e5 (16.Nbd2 Bc3 17.Rc1 Bd2 18.Nd2 Qd4=) 16...Qe6 17.a3 Be7 (17...Ba5 18.Bg6 hg6 19.Nfd2=) 18.a4 (18.Nc3 0-0-0=) 18...Nd5 19.Bc4 Rd8 20.Qb3 Bh5 (20...Qd7 21.Nbd2+=) 21.Nbd2+= b6 22.a5 (22.Rfb1 Bg6 23.Rb2 h5=) 22...b5 23.Bd3 Bg6 24.Rac1 (24.Rfc1 Nf4 25.Bg6 Ne2 26.Kf1 Qb3 27.Nb3 Nc1 28.Bf7 Kf7 29.Rc1 Rg6+=) 24...Nf4= 25.Qe6 Ne6 Attacks the backward pawn on d4 26.Bg6 hg6 27.Rc6 Nd4 28.Ra6 (28.Nd4 Rd4 29.Nb3 Rd5+=) 28...Nf3= 29.Nf3 Rd3 30.Kg2 Rd7 31.Rc1 (31.Rc1 Kd8 32.e6 fe6 33.Ne5+/–) 1–0. macsek – Klaus Behrmann, ChessWorld.net, 2004.

4.Nf3 e6 5.c3 a5 6.b5 Nd7 7.Nbd2 e5 (7...Nf6 8.e3+=) 8.Ne5+/– Ne5 9.de5 Bg7 10.Nf3 f6 11.ef6 Qf6 12.Rc1 c6 13.bc6 bc6 14.c4 d4 15.g3 (15.e3 de3 16.fe3 Bf5+/–) 15...0-0+= 16.Bg2 Bf5 17.0-0 Rae8 18.Qd2 Qd8 19.c5 Be4 20.Nh4 Qg5 21.Rfd1 Qf6 22.Rf1 (22.e3 de3 23.fe3 a4+/–) 22...Qg5+= 23.Qd1 Qd5 24.Rc2 Bf6 25.Be4 Re4 26.Ng2 Bg7 27.e3 d3 28.Rd2 a4 29.Qb1 Qc5 30.Qd3 Qc4 31.Qc4 Rc4 32.Nf4 Re8 33.Rb1 Re7 34.Nd3 Kf7 35.Kg2 h5 36.Rb6 h4 37.Nb2 Bb2 38.Rdb2 hg3 39.hg3 h5 40.R6b4 a3? 41.Rc4+– (41...ab2 42.Rb4+–) 1–0. London_Patzer – Papov, ChessWorld.net, 2005.

4.Nf3 Bf5 5.e3+= Nd7 6.Bd3 Bg6 (6...Bd3 7.Qd3 e6 8.a3+=) 7.0-0 (7.a3 Bg7+=) 7...e6 8.c3 (8.c4 dc4 9.Bc4 Bb4=) 8...Qf6= 9.Be2 Rg8 10.Qa4 Bd6 (10...Qg7 11.g3=) 11.Nbd2 c6 12.b5 (12.c4 Nb6 13.Qb3 dc4 14.Bc4 Nc4 15.Nc4 Qf3 16.Nd6 Ke7–+) 12...Nb6 13.Qa5 (13.Qd1 Qg7 14.g3 c5=) 13...c5 14.dc5 Bc5 15.Nd4 (15.Rac1 Qg7 16.g3 Qf8=) 15...h5 (15...Qg7 16.g3=) 16.Rfe1 (16.f4 h4=) 16...h4 (16...e5 17.N4b3 Be7 18.Bf1=) 17.Bf1 (17.h3 Be7=) 17...h5 (17...Be7 18.h3+=) 18.Rad1 (18.N4f3 Be7=) 18...h3+= Black is in command 19.g3 h4 20.Bh3 hg3 (20...Bd6 21.Bg2+=) 21.fg3 Bh5 22.Rc1 Bd6 23.Bg2 Qg6 24.Rf1 Qd3 25.Rf2 Qe3 26.Rcf1 Rh8 27.N2f3 Bf3 28.Bf3 Nc4 29.Qa4 Qc3 30.b6 Kd8 31.Nb5 Qb4 32.Qb4 Bb4 33.ba7 Bc5 34.Kh1 Bf2 35.Rf2 Kd7 36.a4 Nd6 37.Bd1 Nb5 38.ab5 Ra7 39.Rf7 Kd6 40.h4 Ra1 41.Rf1 Rb1 42.Be2 Rf1 43.Bf1 e5 44.Kg1 e4 45.Kf2 d4 46.Be2 Rf8 47.Ke1 d3 48.g4 Ke5 49.g5 Kd4 50.g6 Ke3 51.g7 d2 52.Kd1 Rc8 (52...Rc8 53.Bc4 Rc4 54.g8Q Rc1) 0–1. macsek – tomrules99, ChessWorld.net, 2004.

4.Nf3 Bf5 5.e3 e6 6.a3 Rg8 7.Nbd2 Nd7 (7...a5 8.b5=) 8.c4= c6 9.g3 a5 10.b5 c5 (10...Be7 11.a4=) 11.cd5 ed5 12.dc5 Nc5 13.Nd4 Bg6 14.Be2 Bg7 (14...Bd6 15.0-0=) 15.0-0+= Qe7 16.a4 b6 (16...Kf8 17.Re1+=) 17.Rc1+– Qd7 (17...Qd6 18.N2b3 Na4 19.Na5+–) 18.Bf3 (18.Bf3 Kf8 19.Bg4+–) 1–0. Panza (2205) – tomrules99 (1785), ChessWorld.net, 2004.

4.Nf3 Bf5 5.e3+= Rg8 6.Rg1 +=.

4.Nf3 Bg4 5.Ne5 (5.Nbd2 Bg7=) 5...Bh5 6.Qd3 c6 7.e4 (7.Qg3 Bg6=+) 7...Nd7 8.ed5 Ne5 9.de5 e6 (9...cd5? 10.Qf5 Bg7 11.Qh5+–) 10.Qh3 Bg6 11.dc6 bc6 12.a3 Qg5 13.Qc3 (13.Qe3 Qe3 14.fe3 a5=+) 13...Qc1–/+ 14.Ke2 Rd8 (14...Qc2?! 15.Qc2 Bc2 16.Nc3=) 15.f3? (better 15.Qc6 Rd7 16.Qc8 Ke7 17.Qc3 Bc2 18.f3–+) 15…Be7–+ 0–1. Klaus Behrmann (2235) – Panza (2285), ChessWorld.net, 2004.

4.Nf3 Bg7 5.e3 Bg4 6.Nbd2 c6 (6...e5 7.Be2 Rg8 8.0-0+=) 7.Be2 a5 8.b5 0-0 (8...c5 9.Rc1+=) 9.0-0 Qd6 10.bc6 bc6 11.c4 Nd7 12.Rb1 Rfb8 13.Qa4 e5 14.h3 (14.cd5 Qd5 15.Bc4 Qd6+/–) 14...Be6 15.Rb8 Rb8 16.cd5 Bd5 17.Qa5 ed4 18.ed4 Nf8 19.Bc4 Ne6 20.Bd5 cd5 21.Rd1 (21.Rb1 Rc8 22.Qa4 Qf4+/–) 21...Nf4 22.Nf1 Qc6 (22...Qf6 23.Ne3 Qg6 24.Kh2+/–) 23.Qd2 Qf6 24.Qe3 Ra8 25.a4! Ng6 (25...Ra4 26.Qe8) 26.Qb3 Nf4 27.Ng3 Qc6 28.Ra1 Qc8 29.a5 Ra6 30.h4 Qc7 31.Nf5 Bf8 32.g3 Qc3? 33.Qc3 Ne2 34.Kg2 Nc3 35.Ne5 f6 36.Nd3 Kf7. Thor – Gls1968, ChessWorld.net, 2006.

2.d4 e5

3.a3 ed4 4.Bh6 gh6 5.Qd4 Rg8 6.Qe4 Qe7 7.Qh7 Rg6 8.Qh8 d5 9.e3 (9.Nf3 Be6 10.Ne5 Qg5=) 9...Nd7 10.Qb2 (10.c3!?=) 10...d4=+ 11.Nf3 (11.Bd3 Rg8=+) 11...de3–/+ 12.Nc3 (12.c3!?–/+) 12...Bg7–+ 13.Bd3? (better is 13.0-0-0–+) 13…Rc6 (14.Nd5 Bb2 15.Ne7 Ke7–+ (15...Ba1?! 16.Nc6 bc6 17.Ke2–+)) 0–1. Steve9843 – Thor, ChessWorld.net, 2005.

3.a3 Qf6 4.de5 Qe5 5.c3=.

3.Bh6 gh6

4.de5 Nc6

5.c3 Ne5

6.Nd2 d6 7.Ngf3 Bg7 8.e3 Nf3 9.Nf3?? Bg4?? 10.Rc1= 0-0 11.Bd3 Kh8 12.0-0 Qf6 13.Re1 Rae8 14.Be2 Re7 15.Nd4 Be2 16.Ne2 Rfe8 17.Ng3 a6 18.Re2 Re5 19.Rd2 Bf8 20.Rd4 c5 21.Rd5 cb4 22.cb4 b5 23.Rc6+– Rd5 24.Qd5 Re5 25.Qd3 Rg5 26.Qc2 Rg3? 27.hg3 h5 28.Ra6 h4 29.gh4 Qa1 30.Kh2 Qe5 31.g3 f5 32.Ra7 d5 33.Ra8 Kg8 34.Qc8 Qf6 35.Rb8 Kg7 36.Rb5 f4 37.Qg4 Kh8 38.Qf4 Qf4 39.gf4 (39...Kg7 40.a3+–) 1–0. alaamattar (2100) – bar (2030), net–chess.com, 2005.

6.Nd2 Bg7 7.Ne4 d5=+ (8.Nd2 Bf5=+). dcroll – gregory (2085), net–chess.com, 2005.

6.Qd5 Nc6 (7.a3 Ne7=). dcroll – beezaman (1880), net–chess.com, 2005.

6.Qd5 d6 7.Nf3 c6 8.Qe4 f5 9.Qe3 Bg7 10.g3 0-0 11.Bg2 Be6 12.0-0 Qf6 13.Nd4 Bf7 14.Nd2 Nc4 15.Nc4 Bc4 16.Qf4 Rae8 17.Rfe1 Re5 18.Nc6!+/– bc6 19.Qc4 d5 20.Qa6 Re7 (21.b5 f4 22.bc6 Qf7+–; 20...f4 21.Qa7 Ree8 22.b5+/–). sbryntze – gregory (2085), net–chess.com, 2005.

6.Qd5 d6 7.Nf3 c6 8.Qe4 Qf6 9.Ne5 de5 10.Nd2=.

6.Qd5 d6 7.Nf3 Ng6 8.e3+= c6 9.Qd4 Be7 10.Bd3 Bf6 11.Qe4 Qe7 12.0-0 0-0 13.Qe7+/– Ne7 14.Rc1 a5 15.ba5 Ra5 16.Nbd2 Be6 17.Nc4 Bc4=+ 18.Bc4 d5 19.Bb3= c5 20.a4 Rfa8 21.Rab1 b5 22.ab5 Rb5 23.c4 dc4 24.Bc4 Rb4 25.g3 Rab8 26.Rb4 cb4 27.Bb3 Bc3 28.Ne1 Nc6 29.Nd3 Na5 30.Rb1 Rd8 31.Nc5 Rc8 32.Ne4 Nb3 33.Rb3 Rc6 34.g4 Kg7 35.f3 Kg6 ½–½. gregory (2085) – janlagrain (2000), net–chess.com, 2005.

6.Qd5 Bd6 7.e3 (7...Rg8 8.Nd2+=; 7.Nd2 f6+=). sbryntze – dcroll, net–chess.com, 2005.

6.Qd5 Bd6 7.Nf3 (7...Nf3 8.Qf3= (< 8.gf3 Qf6=+); 7.Nd2 Ng6+=). gregory (2085) – dcroll, net–chess.com, 2005.

6.Qd5 Bg7 7.e3 0-0 8.Nd2 c6 9.Qb3 d5 10.Ngf3 Qf6 11.Rc1 Re8 12.Be2 Ng4 13.0-0 Be6 14.Nd4 Qh4 15.N2f3 Qh5 16.h3 Rad8?? 17.Ne6+– Re6 18.hg4 Qg4 19.Nd4 Qh4 20.Ne6 (20...fe6 21.c4+–) 1–0. gregory (2085) – sbryntze, net–chess.com, 2005.

6.Qd5 Bg7 7.Nf3 Nf3 8.ef3 d6 9.Qe4 Be6 10.Qb7+= 0-0 11.Bd3 Qd7 12.Qe4 f5 13.Qh4 f4 14.0-0 Rf6 15.Nd2 Raf8 16.Ne4 Rf5 17.Rfd1 Kh8? 18.Nc5!+– Qf7?! 19.Ne6 Qe6 20.Bf5 Qf5 21.Rac1 a5 22.Qe7 Qb5 23.Qc7 d5 24.Qa5 Qe2 25.Qd5 h5 26.a4 Qb2 27.Qc5 Qe2 28.b5 h6 29.Qh5 Rc8 30.Re1 Qd2 31.Re8 Re8 32.Qe8 Kh7 33.Qe4 Kg8 34.Qc2 Bc3 35.Qc3 Qc3 36.Rc3 Kf7 37.b6 (37...Kf6 38.b7 Ke5 39.b8Q Kd5 40.Qb6 Ke5 41.Rc5 Kd4 42.Qd6#) 1–0. gregory (2085) – bar (2030), net–chess.com, 2005.

6.e3 b6?? 7.Qd5 Nc6 8.b5 +–.

6.e3 b6?? 7.Be2 Bb7 8.Nf3 Qf6 9.0-0 Bd6 10.Qc2?? Nf3–+ 11.Bf3 Bf3 12.gf3 Rg8 13.Kh1 Qf3# 0–1. bar (2030) – alaamattar (2100), net–chess.com, 2005.

6.e3 b6?? 7.Nf3?? Qf6+= 8.Be2 Bd6 9.0-0 Bb7= 10.Nbd2 0-0-0 11.a4 Nf3 12.Bf3 Bf3 13.Qf3+/– Qf3 14.Nf3 Rhg8 15.g3 h5 16.Ng5?? Rg5–+ 17.f4 Rgg8 18.Kg2 h4 19.b5 hg3 20.h3 Rde8 21.Rfe1 Bc5 22.Rad1 Be3 23.Rd3 Bf4 24.Re8 Re8 25.h4 Re3 26.Re3 Be3 27.Kg3 f5 28.Kf3 f4 29.h5 h6 30.c4 c6 31.Ke4 cb5 32.ab5 Kc7 33.Kd3 Kd6 34.Ke4 Ke6 35.Kf3 Kf5 36.Ke2 Kg5 37.Kd3 Kh5 38.c5 Bc5 39.Ke4 Kg4 40.Kd5 f3 (41.Ke4 f2 42.Kd3 f1Q 43.Kc3 d5 44.Kc2 Qe2 45.Kc3 d4 46.Kb3 h5 47.Ka4 Qc4#) 0–1. bar (2030) – octopus (2020), net–chess.com, 2005.

6.e3 d6 7.Be2 Bf5 8.Nf3 Bg7 9.Nd4 Bd7 10.a4 Nc6 11.0-0 Qg5 12.Kh1 0-0-0 13.b5 Ne7 14.Nd2 Nd5 15.Qb3 Bd4 16.cd4 Be6 17.Qb2 Rhg8 18.g3 Bh3 19.Rfc1+/– h5 20.a5 h4 21.b6 a6 22.bc7+– Rd7 23.Ba6! Rc7 24.Rc7 Nc7 25.Bb7 Kd8 26.Qb6 Bc8 27.Qd6 Bd7 28.Bc6 Qf5 29.Rb1 Kc8 30.Bd7 Qd7 31.Rb8! (31...Kb8 32.Qd7 hg3 33.Qf7 g2 34.Kg1+–) 1–0. janlagrain (2000) – octopus (2020), net–chess.com, 2005.

6.e3 Bg7 7.Be2 d5 8.a3 Bf5=+ 9.Ra2 Nc4 10.Bc4= Bb1 11.Qb1+= Bc3 12.Ke2 dc4 13.Qc2 Bg7 14.Qc4 c6 15.Nf3 0-0 16.Rd1 Qe7 17.Rd3 Rad8 18.Rad2 Rd3 19.Rd3 Rd8 20.Rd8 Qd8 21.Nh4 Qf6 22.Nf3 Qb2=+ 23.Nd2 Qa3 24.Qg4 Qa6 25.Qc4 Qc4 26.Nc4 Bc3 27.Nd6 b5 28.Nc8+= a6 29.Ne7+/– Kf8 30.Nc6 Ke8 31.Kd3 Be1 32.f3 f6 33.Nb8 Bb4+= 34.Na6 Bd6 35.h3 Kd7 36.Kc3 Ke6 37.Nb4 Bc5 38.e4 Ke5 39.Nd3 Kd6 40.Nc5 Kc5 41.f4 b4 42.Kd3 b3 43.Kc3 b2 44.Kb2 Kd4 45.e5 fe5 46.f5 Kd5 47.Kc3 e4 48.g4 Ke5 49.Kd2 h5 50.Ke3 h6 51.Kf2 hg4 52.hg4 h5 53.Kg3 e3 54.gh5 Kf5 55.h6 e2 56.Kf2 Kg6 57.Ke2 Kh6 ½–½. bar (2030) – gregory (2085), net–chess.com, 2005.

6.e3 Bg7 7.Nf3 d6 8.Be2 0-0 9.0-0 a5 10.Qb3 Be6 11.c4?? Nf3–+ 12.Bf3 Ba1 13.Nd2 Be5 14.b5 Rb8 15.Qc2 Kh8 16.a3 Qg5 17.Be4 f5 18.Bd5 Bd5 19.cd5 f4 20.Nf3 Qg7 21.Ne5 de5 22.e4 f3 23.g3 Qd7 24.a4 Qh3 25.Qc7 Qg2# 0–1. bar (2030) – janlagrain (2000), net–chess.com, 2005.

6.e3 Bg7 7.Nf3 Nf3 8.Qf3 0-0 9.Bd3 d6 10.a4 a5 11.b5 f5 12.Bc4+/– Kh8 13.0-0 Qe7 14.Rd1 Ra7 15.Qd5 b6 16.Ra2 Bb7 17.Qe6 Qg5 18.Bd5?? Bd5 19.Qd5 Raa8 20.Nd2 Rae8 21.Nf3+/– Qg4 22.h3 Qh5 23.Qc4 Re7 24.Rad2 Rfe8 25.Rd5 Bf6 26.Qf4 Re4 27.Qf5 Qf5 28.Rf5 Bc3 29.Rc1 Rc4 30.Nd2! Bd2? 31.Rc4 Kg7 32.Rc7 Kg6 33.Rd5 Bb4 34.Rc6 Bc5 35.Rdd6 Bd6 36.Rd6 Kf5 37.Rb6 h5 38.Ra6 Re4 39.Ra5 Re5 40.Ra6 Ke4 41.b6 Kd3 42.b7 Re8 43.Ra8 Ra8 44.ba8Q (44...Kc3 45.Qc6 Kb4 46.Qb5 Kc3 47.Qh5+–) 1–0. janlagrain (2000) – bar (2030), net–chess.com, 2005.

6.e3 Rg8 7.f4 Qh4 8.Kd2 =+.

6.e3 Rg8 7.Nh3=.

6.Nf3 Nf3 7.ef3 Qe7 8.Be2=.

6.Nf3 Bg7 7.e3 a5 8.Bc4?? Nc4–+ 9.0-0 0-0 10.Nd4 ab4 11.cb4 d6 12.Qe2 Ne5 13.f4 Ng4 14.h3 Nf6 15.Nc3 c5 16.Ndb5 cb4 17.Nd1 Ne4 18.Rf3 Ba1 19.Qd3 Bf5 20.Qd5 Qf6 21.Nf2 Nf2 22.Rg3 Kh8 23.Kf2 Rfc8 24.Nd6 Qb2 25.Kf3 Be6 26.Qb7 Qa2 27.Nf7 Bf7 28.Qf7 Qf7 (29.Kf2 b3–+) 0–1. beezaman (1880) – sbryntze, net–chess.com, 2005.

6.Nf3 Bg7 7.e3 d6 8.Be2 Bf5 9.Nd4 Bg6 10.f4 Nc6 11.Bb5 Bd4 12.cd4 0-0 13.Bd3?? Nb4 14.Bg6 hg6–/+ 15.h4 Re8–+ 16.Qd2? Nd5 17.0-0 Re3 18.Re1 Re1 19.Qe1 Nf4 20.Nc3 Qd7 21.Qe3 Qg4 22.Qf2 Nh3 (23.Kf1 Nf2–+) 0–1. beezaman (1880) – gregory (2085), net–chess.com, 2005.

6.Qd5 Qf6

7.Nf3 Ng4 8.h3+– c6? 9.Qh5?? Ne5?? 10.Qe5+– Qe5 11.Ne5 Bg7 12.Nc4 d5 13.Nd6 Kd7 14.Nf5 Bf6 15.Nd4 a5 16.e3 ab4 17.cb4 b6 18.Nc3 c5 19.Nd5 Bd4 20.ed4 Kc6 21.Ne7 Kd7 22.Nc8 Re8 23.Kd2 Rec8 24.Bd3 Rg8 25.g3 Rg7 26.dc5 bc5 27.bc5 Ra5 28.Rhc1 f6 29.a4 Kc6 30.Bb5 Kc7 31.Re1 Ra8 32.Kc3 Rd8 33.Rad1 Rd1 34.Rd1 Re7 35.c6 Re8 36.Rd7 Kb6 37.Rb7 Kc5 38.c7 (38...Rc8 39.Bd7 Rc7 40.Rc7 Kb6 41.Rc6 Kb7 42.a5+–) 1–0. sbryntze – beezaman (1880), net–chess.com, 2005.

7.g3 Bb4!? 8.Bg2 Be7 =+.

7.g3 Ng4 8.Qe4 Qe6 9.Nd2 Qe4= 10.Ne4 Bg7 11.Rc1= b6 12.Bg2+= Bb7? 13.Nd6+– cd6 14.Bb7 Rb8 15.Bd5 Rc8+/– 16.c4 b5 17.h3 Nf6+/– 18.e4 Nd5=+ 19.ed5 0-0 20.Kd2 bc4 21.Ne2 c3 22.Nc3+/– Bc3 23.Rc3+– Rc3 24.Kc3 Rc8 25.Kd3 Kg7 26.Re1 Kf6 27.f4 h5 28.a4 Rg8 29.Re3 Rb8 30.Kc4 Kf5 31.Re7 Rc8 32.Kd4 Kf6 33.Rd7 Rb8 34.b5 Rg8 35.Rd6 Ke7 36.Rh6 Rg3 37.Rh5 Ra3 38.Rh7 Ra4 39.Ke5 Rb4 40.d6 Ke8 41.d7 Kd7 42.Rf7 Ke8 43.Ra7 Rb5 44.Ke6 Rb6 45.Kf5 Rb3 46.h4 Kf8 47.Kf6 Rb6 48.Kg5 Rb1 49.f5 (49...Ke8 50.h5+–) 1–0. gregory (2085) – beezaman (1880), net–chess.com, 2005.

7.Nf3 Nf3

8.ef3 Bb4 9.Qc4 Bd6 10.Nd2 –/+.

8.ef3 Bb4!? 9.Qc4 Qe7 10.Kd1 Bc5 –/+.

8.ef3 c6 9.Qe4=+ Qe7 10.Bd3 d5 11.Qe7 Be7 12.Nd2 Bd7 13.Nb3 0-0-0 14.0-0 f5 15.Rfe1 Bf6 16.Rac1 Bg5 17.Rc2 Rhe8 18.Rce2 Re2 19.Re2 f4 20.Bh7+= Kc7 21.Nd4 Bf6 22.g4 Bd4 23.cd4+= Re8 24.Kf1 b5 25.h4 Kd8 26.Re5 Re7 27.Bf5 Rf7 28.Bd7 Kd7 29.Rh5 Rf6 30.g5 hg5 31.Rg5 Ke6 32.h5 Rf5 33.Rg6 Rf6 34.Kg2 Kf5 35.Rf6 Kf6 36.h6 Kg6 37.h7 Kh7 38.Kh3 Kg6 39.Kg4 Kf6 40.Kf4+– a6 41.Kg4 Kg6 42.f4 Kf6 43.f5 Kf7 44.Kg5 Kg7 45.f6 Kf7 46.Kf5 Kf8 47.Ke6 (47...a5 48.ba5+–) 1–0. gregory (2085) – octopus (2020), net–chess.com, 2005.

8.ef3 Bg7 9.Bd3= c6 10.Qe4 Qe6 11.0-0 d5 12.Qf4 Be5 13.Qd2 Rg8 14.f4 Qg4 15.f3 Qf4 16.Qf4 Bf4 17.g3 Be3 18.Kg2 d4 19.Re1 Kd7 20.a4 Kd6 21.cd4 Bd4 22.Ra2 Be6 23.Rd2 Rgd8 24.Bh7 Kc7 25.g4 Rd7 26.Be4 Rad8 27.h3 Be5 28.Red1?? Rd2–/+ 29.Rd2 Rd2 30.Nd2 Bc3 31.Nf1 Bb4 32.Bc2 b5 33.ab5 cb5 34.Ne3 a5 35.Kf2 a4 (36.Kg1 a3–+) 0–1. gregory (2085) – alaamattar (2100), net–chess.com, 2005.

8.Qf3 Qf3 9.ef3 d5=.

8.Qf3 Qf3 9.ef3 Rg8=.

8.Qf3 Qf3 9.gf3 a5=.

6.e4 Bg7

7.Be2 0-0 8.Nf3 d6 9.0-0 Be6 10.Qc2 Nf3= 11.Bf3 Qg5 12.Nd2 Rad8 13.Nb3 Be5=+ 14.g3 Qf6 15.Nd4?? Bd4–+ 16.Bg2 Bc3 17.Rab1 c6 18.a3 d5 (19.Rfd1 d4–+) 0–1. alaamattar (2100) – gregory (2085), net–chess.com, 2005.

7.Nf3 d6 8.Be2 0-0 9.Nd4 c5 10.Nc2 c4 11.Ne3 Be6 12.f4 Nc6 13.a3 b5 14.Ra2 Bf6 15.Rd2 Qb6+= 16.Kf2 Rad8 17.Re1 Ne7 18.a4 ba4 19.Qa4 d5 20.e5 Nf5 21.Bc4 Ne3 22.Re3 Be5 23.fe5 dc4 24.Qa5 Qa5 25.ba5 Rb8 26.Na3 Rb3 27.Nc2 Rb2 28.Rg3 Kh8 29.Ke3 Bf5? 30.Nb4 Rd2 31.Kd2 Rc8 32.Ke3 Rc5 33.Kf4 Bg6 34.a6 Kg7 35.Rf3 Kf8 36.Rf2 Rc8 37.Ke3 Ke8 38.Kd4 Rc7 39.Nd5 Rc6? 40.Rb2 Kd8 41.Rb8 Kd7 42.Rb7 Ke6 43.g4 (43...Rc7 44.Rc7 f5 45.Nf4#) 1–0. janlagrain (2000) – gregory (2085), net–chess.com, 2005.

7.Nf3 d6 8.Be2 Be6 9.Nd4 Qg5 10.0-0 Bh3=+ 11.Bf3 Rg8 12.Kh1 Nf3 13.Qf3 Bg4 14.Qd3 Bd4 15.f4 Qh5 16.Qd4 Kd7 17.Nd2 Rg6 18.Nc4+/– f6? 19.e5 Be2+/– 20.ed6 Bc4?? 21.Qc4+– cd6 22.Qf7 Kc6 23.Rad1 Rd8 24.Rfe1 Qg4 25.Qc4 Kd7 26.Rd6!! Kd6 27.Qc5 Kd7 28.Re7# 1–0. janlagrain (2000) – alaamattar (2100), net–chess.com, 2005.

7.Nf3 d6 8.Be2 Nf3 9.Bf3 Rg8 10.0-0=.

7.g3 d6 8.Ne2?? Nd3 9.Qd3+– Bg4 10.Bg2 Be5 11.Nd2 Qf6 12.Nf3 0-0-0 13.0-0 Rhe8 14.a4 Re7 15.Ra3 Red7 16.c4 c6 17.Rc1 Bb2 18.b5 Bc1 19.Nc1 Qg6 20.bc6 bc6 21.c5 dc5 22.Qa6 Kb8 23.Rb3 Ka8 24.Ne5 Rd1 25.Bf1 Qe4?? 26.Qb7# 1–0. alaamattar (2100) – octopus (2020), net–chess.com, 2005.

7.g3 d6 8.f4 Ng4 9.Bh3=.

6.g3 Bg7

7.e3 d5 8.Nf3 b6?? 9.Nd4 Bb7 10.Bg2 h5 11.Nd2 Nd3 12.Ke2 Ne5 13.N2f3 Ba6 14.b5 Nf3 15.Bf3 Bd4 16.Qd4 Bb5 17.Ke1 Rg8 18.Bd5+– c6 19.Qe5 Qe7+/– 20.Qe7 Ke7 21.Bb3 Rgd8 22.c4 Ba6 23.f4 Rd6 24.Kf2 Bb7 25.Rhd1 Rad8 26.Rd6 Rd6 27.Rd1 f6 28.Rd6 Kd6 29.Ke2 Bc8 30.Kd3 c5 31.Bd1 Bg4 32.Be2 h6 33.e4+= Ke6 34.Ke3 Kd6 35.h4 Ke6 36.a3 ½–½. octopus (2020) – alaamattar (2100), net–chess.com, 2005.

7.Bg2 0-0 8.Nf3 c6 9.0-0 d5 10.Qc2 a5 11.Nd4 ab4–/+ 12.cb4 Qb6 13.e3 Qb4–/+ 14.a3 Qe7 15.Nd2 Ra3 16.Ra3 Qa3 17.Rb1 Qd3 18.Bf1 Qc2 19.Nc2 b5 20.Nd4 Bd7 21.N2b3 Ra8 22.Nc5 Be8 23.Nf5 Bf8 24.Nb3 Bd7 25.Nfd4 Nc4 26.Bc4 dc4 27.Nd2 Ra2 28.Ne4 Be7 29.Nc3 Ra3 30.Ne4 b4 31.Nc2 Ra4 32.Nd2 Ra2 33.Nc4 Rc2 34.Nb6 Be6 35.Rd1 b3 36.Rb1 b2 37.Na4 Rc1 (38.Kg2 Rb1 39.Nb2 Bd5 40.e4 Be4 41.Kh3 Rg1 42.f3 Bf3 43.Nc4 f5 44.Ne3 h5 45.g4 hg4 46.Ng4 Bg4#) 0–1. octopus (2020) – janlagrain (2000), net–chess.com, 2005.

7.Bg2 c6 8.Qc2 d5 9.Nd2 a5 10.Rc1 Be6 11.Ngf3 0-0 12.0-0 ab4 13.cb4 Qb6 14.Rb1 Ra7 15.a4= Rfa8 16.a5 Qd8 17.Nd4 Qf6 18.Ne6 fe6 19.e3 ½–½. alaamattar (2100) – janlagrain (2000), net–chess.com, 2005.

7.Bg2 c6 8.Nf3 Nc4 9.Qb3 d5 10.Nbd2 Nd2 11.Nd2 0-0 12.0-0 Be6 13.e4? de4–/+ 14.Qc2 Bd5?? 15.Ne4 Re8 16.Rad1 Be4 17.Be4+/– Qf6 18.Bh7 Kh8 19.Bd3 Re7 20.c4+= Rae8 21.Qd2 Qc3 22.Qc3 Bc3 23.b5 cb5 24.cb5 b6 25.a4 Ba5 26.Kg2 Kg7 27.h4 Rd7 28.Bf5 Rc7 29.Rd7 Rd7 30.Bd7 Rd8 31.Rd1 Kf6 32.Bg4 Re8 33.Rd6+– Kg7 34.Rd7 Re4 35.Kf3 Ra4 36.Ra7 Ra3 37.Kg2 Rb3 38.Be6 Rb5 39.Bf7 Kf6 40.Bc4 Rb2 41.Rf7 Ke5 42.Re7 Kd4 43.Be2 b5 44.Ra7 Re2 45.Ra5 b4 46.Rb5 Kc3 47.Kf3 Re6 48.Rc5 Kb2 49.g4 b3 50.g5 hg5 51.hg5 Kb1 52.Kf4 b2–/+ 53.Kf5 Re2 54.g6= Rf2 55.Ke6 Ka2 56.Ra5 Kb3 57.g7 b1Q?? 58.Rb5+– Kc2 59.Rb1 Kb1 60.g8Q Re2 61.Kd5 (61...Kc2 62.Qg6 Kc3 63.Qf6 Kd2 64.Qd4 Kc1 65.Qc3 Kd1 66.Qf3+–) 1–0. octopus (2020) – bar (2030), net–chess.com, 2005.

7.Bg2 c6 8.Nf3 d6 9.0-0 0-0 10.Qc2 Qf6 11.Rc1 Bf5 12.Qb3 Rfe8 13.Nbd2 d5 14.Rab1? Bb1–+ 15.Rb1 Nf3 16.Bf3 Qc3 17.Qd1 Re7 18.Rb3 Qa1 19.Qa1 Ba1 20.Rb1 Bc3 21.Nb3 Bb4 22.Nd4 a5 23.Nf5 Re6 24.Bg4 Rae8 25.e3 Rb8 26.Rb3 c5 27.a3 Bd2 28.Rd3 Bc1 29.Rc3 Bb2 30.Rc5 b6 31.Rd5 Ba3 32.Nd6?? Rd6 (33.e4 b5–+; 32...Bd6?! 33.Be6 Bg3 34.Bf5–/+) 0–1. octopus (2020) – gregory (2085), net–chess.com, 2005.

7.Bg2 c6 8.Nf3 Nf3 9.Bf3 d5 10.Qd3=.

2.d4 e6

3.a3 Ng4 4.e4 Qh4 5.g3 Qh5 6.Be2 Qg6 7.f3 Nh2 8.Kf2 Bd6 9.e5 Nf3 10.Nf3 c5 11.ed6 cb4 12.ab4 Nc6 13.b5 Nb4 14.b6 Nc2 15.Ra7 Ne3 16.Be3 Rb8 17.Qc1 0-0 18.Qc7 Qg4 19.Bd3 Ra8 20.Bh7 Kh8 21.Bf5 Kg8 22.Ra8 ef5 (22...Qf3 23.Kf3 g6 24.Rc8 g5 25.Rf8 Kf8 26.Qc8 Kg7 27.Qh8#) 23.Qc8! Qg3 (23...Rc8 24.Rc8#) 24.Kg3 Rc8 (24...f4 25.Bf4 Rc8 26.Rc8#) 25.Rc8# 1–0. New Rival aV – MFChess 1.0, Kleinschmidt, CT, 1999.

3.Ba3 a5 4.b5 Ba3 5.Na3 +=.

3.Ba3 a6 4.h3 (4.e4 d5 5.e5 Nf5=) 4...Nf5 (4...d5 5.e3+=) 5.e4= Ne7 6.Bd3 Ng6 7.Nf3 Nf4 8.0-0 h5 9.Nc3 (9.Qd2 Nd3 10.Qd3 g5=) 9...c6 (9...a5 10.Rb1=) 10.Bc4 (10.Rb1 g5 11.Bc1 Nd3 12.Qd3 g4=) 10...f6 (10...d5 11.Bb3=) 11.e5 (11.Ne2 Ne2 12.Be2 g5+/–) 11...Be7 (11...a5 12.Bc1 ab4 13.Bf4 bc3 14.Qd3+=) 12.ef6 (12.Ne2 Nd5+/–) 12...gf6+= 13.Qd2 d5 14.Bb3 Rg8?? 15.Qf4+– Nd7? 16.Rfe1 Nf8 17.Qh6 Kd7 18.Qh5 Ng6 19.Re3 Nf4 20.Qh4?? Rg2?? 21.Kf1+– 1–0. helmisflorin – TikTakToe, Tuebingen internet, 2012.

3.Bh6 gh6 4.b5 d5 5.Nd2 Bb4 6.Rb1 Bc3 7.e3 Bd2 8.Kd2 Bd7 9.Kc1 c6 10.bc6 Bc6 11.Nh3 Qa5 12.Rb2 Nd7 13.Bd3 Nf6 14.Qf3 Qd8 15.Nf4 Qd6 16.Qh3 Qf8 17.f3 Rc8 18.Kd2 Rc7 19.Rhb1 Nd7 20.Kc1 e5 21.de5 Ne5 22.Rb3 Qc5 23.Kd2 (< 23.Qh6 Ba4 24.Bf5 Bb3 25.Rb3 Qa5–+) 23...Qa5 24.Kd1 Nc4 25.Bc4 dc4 26.Rb4 Rd7 27.Ke2 Qa2 28.R1b2 Qa6 29.c3 0-0 30.e4 Rd6 31.Qg4 Kh8 32.Qh5 f5 33.e5 (33.ef5 Qa5 34.f6 Qg5 35.Qg5 hg5=) 33...Re8 34.Qe8 Be8 35.ed6 Qd6 36.g3 Qe5 37.Kd2 b5 38.Ra2 Qc5 39.Ra6 Qf2 40.Ne2 Qf3 41.Rh6 a5 42.Rb2 b4 43.Rd6 Bh5 44.Rd8 Kg7 45.Rd7 Kg8 46.cb4 Qe2 47.Kc3 Qf3 48.Kc2 c3 49.Rd8 Kf7 50.Rb3 f4 51.Rc3 Qe4 52.Rcd3 Qc4 53.Kb2 Qb4 54.Rb3 Qe7 55.Rd5 a4 56.Rbb5 a3 57.Kb3 Qe3 58.Ka2 Bg4 59.Rb7 Kf6 60.Rb3 Qf2 61.Ka3 Be6 62.Rdb5 Bb3 63.Rb3 Qh2 64.Rf3 Qg3! 65.Rb3 Qb3! 66.Kb3 f3 67.Kc3 f2 68.Kd4 f1Q 69.Kd5 Qd3 70.Kc5 Ke5 71.Kb6 Qd5 72.Ka6 h5 73.Kb6 h4 (74.Kc7 Qd6 75.Kb7 h3 76.Ka7 h2 77.Kb7 h1Q 78.Ka7 Qh7 79.Ka8 Qd8#) 0–1. Bestia02c – SSEChess203, computer chess game, 2000.

3.Bh6 gh6 4.c3 d5 5.Nd2 Bg7 6.Ngf3 0-0 7.Rb1 Nd7 8.e4 e5 9.Bd3 de4 10.Be4 ed4 11.Nd4 Bd4 12.cd4 Nf6 13.0-0 Qd4 14.Re1 Bg4 15.Qc1 c6 16.Nb3 Qd6 17.Nc5 Ne4 18.Ne4 Qg6 19.Qc3 Bf5 20.Nf6 Kh8 21.Rb2 Rfd8 22.Qe5 Bd3 23.Nh5 Kg8 24.Rd2 Qg5 25.Qg5 hg5 26.Red1 f5 27.Rd3 Rd3 28.Rd3 Kf7 29.Rd6 Ke7 30.Rh6 Rd8 31.Rh7 Ke6 32.f4 Rd1 33.Kf2 Rd2 34.Kf1 Ra2 35.fg5 Ra1 36.Kf2 b6 37.g6 Ra2 38.Kg3 Ra3 39.Kh4 Re3 40.Nf4 Kd6 41.g7 Re4 42.Kg5 Re8 43.Rh8 Rh8 44.gh8Q c5 45.Qd8 Kc6 46.Qd5 Kb5 47.bc5 bc5 48.Ne6 a6 49.Qc5 Ka4 50.Qb6 Ka3 51.Nd4 Ka4 52.Qb3 Ka5 53.Nc6# 1–0. Bestia03g – SSEChess203, computer chess game, 2000.

2.d4 Nf5

3.e3 c6 4.Nc3 (4.e4 Nh4+=) 4...d5 5.Bd3 (5.a3 a5 6.b5 e6=) 5...b5 (5...e5!? 6.de5 Bb4=+) 6.Nf3= f6 (6...e6 7.a3=) 7.0-0 (better 7.e4 de4 8.Be4+=) 7...g5? (7...e5!? 8.de5 Bb4=) 8.Nd2 (8.Ng5!? h5 9.Nf3+–) 8...h5 Black fights for the Initiative 9.Nb3 e5 10.Bf5 (10.a3 e4 11.Be2 g4=) 10...Bf5= (10...Bb4? 11.Bg6 Kf8 12.Bb2+–) 11.f3 (11.a3 e4=) 11...Bg6 (11...Bb4 12.Bb2–/+) 12.h3 (12.a3 g4=) 12...Nd7 (12...Bb4 13.Bb2–/+) 13.a4 (13.a3!?=) 13...Bb4–/+ 14.Ne2 (14.Na2 Be7 15.de5 Ne5 16.ab5 cb5–/+) 14...e4 (14...g4!?–+) 15.fe4–/+ de4 16.c3 (16.Ba3 Ba3 17.Ra3 a6=+) 16...Bd6–/+ 17.Nc5 (17.ab5!? cb5 18.Ba3 Ba3 19.Ra3=+) 17...Nc5–+ 18.dc5 Bc5 19.Bb2?? (better 19.Qd8 Rd8 20.Nd4 Bd4 21.ed4–/+) 19...Be3 20.Kh1 Qd1 21.Rfd1 (21.Rad1 0-0 (worse 21...ba4 22.Rf6 Rg8 23.Rc6–+) 22.Rd6 ba4 23.Rc6 Rac8 24.Rc8 Rc8 25.Rf6 Bf7–+) 21...0-0 (21...ba4 22.Ra4 0-0 23.Bc1–+) 22.Ba3 (22.Nd4 Bd4 23.Rd4 f5–+) 22...Rfd8 23.ab5 (23.Nd4 Bd4 24.cd4 Rd5–+ (worse 24...ba4 25.Be7–+)) 23...Rd1 24.Rd1 cb5 25.Rd7 Bf5 (better 25...Rc8–+) 26.Kh2 (26.Rd5 Be6 27.Rb5–+) 26...Bd7 27.g3 a5 28.h4 gh4 29.gh4 Bf2 30.Nf4 Bh4 31.Nh5 Bg4 32.Ng3 Bg3 (32...Bg3 33.Kg3 e3–+) 0–1. flipp211 – Delboy Smith (1790), ChessWorld.net, 2009.

3.e4 Nd6 4.e5 Nf5 5.c3 e6 (5...d6 6.Nf3+=) 6.Nf3 b5 (6...a5!? 7.b5 d6+=) 7.Bb5+/– c6 (7...a5 8.ba5 Ba6 9.Ba4+/–) 8.Bd3+– Ba6 (8...a5 9.Bg5 Qc7 10.ba5+–) 9.0-0 (9.Bf5 ef5 10.Qc2 Bc4+–) 9...Bd3 10.Qd3 Be7 11.Nbd2 a5 12.a3 (better is 12.ba5 0-0 13.Nb3+–) 12...Nh4? (12...ab4 13.cb4 Bb4 14.Ne4+=) 13.g3?? (better is 13.Nh4 Bh4 14.Nc4+–) 13...Nf3+= 14.Nf3 h5 15.Bf4 h4 16.c4 hg3+= 17.fg3 d5 18.c5 Nd7 19.b5 cb5 20.Qb5 Rb8 21.Qd3 Rb2 22.Rf2 Rf2= 23.Kf2 Qb8 24.Rb1 Qa8 25.Bd2 Bc5? 26.a4 Bb4 27.Bb4+/– ab4 28.Rb4 Ke7 29.Qb5?? Qa7 30.Qb7 Qb7 31.Rb7+/– Rb8 32.Ra7 Ke8 33.a5 Rd8 34.Nd2 f6 35.Nb3 fe5 36.de5 g5 37.Nd4+– Nc5 38.Rc7 Ne4 39.Ke3 Rd7?? 40.Rc8 Rd8 41.Rd8 Kd8 42.Ne6 Kc8 43.Kd4 Kb7 44.Kd5 Nc3 45.Kc4 Ne4 46.Kb5 g4 47.Nd8 Ka7 48.Nc6 Ka8 49.Kb6 Nc3 50.e6 Na4 51.Kc7 Nc5 52.e7 Ne6 53.Kc8 Nc7 54.Kc7 ½–½. Shuttlebasher – groovenetwork, ChessWorld.net, 2009.

2.d4 g6

3.c4 d5 4.cd5 Qd5 5.a3=.

3.c4 e5 4.a3 (4.b5!?+=) 4...Bg7=+ 5.Nf3 ed4 6.Nd4 (better 6.Bg5!? f6 7.Bh6 (7.Qd4? Nf5 8.Qe4 Ne7–+) 7...Bh6 8.Nd4=+) 6...0-0 7.Bh6 Bh6 8.e3 Nc6 9.Be2 Nd4 10.ed4 d5 (10...a5 11.Nc3 Bg7 12.ba5–/+) 11.c5 (11.0-0 dc4 12.Bc4 a5–/+) 11...Bg7 12.Ra2 c6 (12...a5 13.b5–/+) 13.0-0 b6 14.Nc3 a5 (14...Re8–/+) 15.Rd2 (better 15.Na4!? ab4 16.cb6 ba3 17.Ra3–/+) 15...ab4–+ 16.ab4 bc5 17.bc5 Ra3 18.Nb1 (18.Na4 Qa5 19.Nb6 Qb4–+) 18...Ra1 19.Qb3 Qa5 20.Rfd1 (20.Qb6 Qb6 21.cb6 Be6–+) 20...Re8 21.Kf1 Kf8 (21...Bf5 22.Bd3 Bg4 23.f3–+) 22.Qb6 Qb6 23.cb6 Bb7 24.Nc3 Rea8 25.Ke1 (better 25.h4–+) 25...R8a6?? (better 25...R1a3 26.Rc2 Rb3–+) 26.Ba6+– Ra6 27.Rb1 Ke7 28.Kf1 (28.Ke2 Ra8+–) 28...Ra3+– 29.Ne2 Kd8 30.Rdd1 1–0. macsek (2325) – Panza (2335), ChessWorld.net, 2004.

3.c4 e6 4.Bd2 b6 (4...Nf5 5.e3+=) 5.Nf3 Bb7 6.e3 Rg8 (6...Nf5 7.Bd3+=) 7.Bc3 (7.Be2 a6+/–) 7...f5 (7...g5 8.h3+=) 8.Nbd2 (8.Be2 g5 9.0-0 g4+=) 8...d6 (8...g5 9.Ne5+=) 9.Bd3+/– g5 10.0-0 g4 11.Ne1 Rg6 (11...c5 12.a3+=) 12.e4+/– Bg7 13.ef5 Nf5 14.Bf5 ef5 15.Nd3 Qg5 16.Re1 Kf7 17.Qc2 Nc6 18.Nb3 Ne7 19.d5 Bc3 20.Qc3 c6 (20...Rh6 21.Nd4+/–) 21.dc6+/– Bc6 22.Nd4 (22.Nd2 Rc8+/–) 22...Be4+= 23.Rad1 (23.Qb3 Rh6 24.c5 d5 25.Ne5 Kf8+=) 23...Rh6 Threatening Qh4 24.Qd2 White fights for the Initiative (24.g3+=) 24...Qh5 (better is 24...Qd2!? 25.Rd2 Rc8=) 25.Qf4+/– g3 (25...Kg8 26.Qg3 Ng6 27.f3 gf3 28.gf3 Bd3 29.Rd3=) 26.h3 (26.Qg3 Rg8 27.Nf4 Rg3 28.Nh5 Rg2 29.Kf1 Rh5 30.Re4 Rhh2–/+ (30...fe4?! 31.Kg2 d5 32.c5=; 30...Rgh2?! 31.Re3–/+)) 26...Bd3 (26...gf2 27.Nf2 (27.Kf2?! Rg6 28.g4 Qh4 29.Qg3 Qg3 30.Kg3 Rag8+=) 27...d5 28.g4+–) 27.Rd3+– gf2 28.Qf2 Rf6 29.Rf3 Rg8? (29...Kf8+–) 30.Qe3 Rg2 (30...Re8 31.Nf5!! Qf5 32.Rf5 Rf5 33.Qe6 Kf8 34.Qh6 Kg8 35.Qd6+–) 31.Kg2 Rg6 32.Kh2 (32.Kh2 Qg5 33.Qf2+–) 1–0. Woelfelschneider,Peter – Van Esbroeck, corr SOK, 1999.

3.c4 Bg7 4.Bh6 (4.e4 d6=) 4...Bh6 5.Nc3 (5.Nf3 0-0=) 5...Bg7 6.e3 d6 7.Nf3 c5 8.b5 0-0 9.Be2 a6 10.0-0 ab5 11.Nb5 (11.cb5 Be6=) 11...Nc6 (better is 11...e5=) 12.dc5 (better is 12.Qb3=) 12...Ba1–/+ 13.Qa1 dc5 14.a3 Qa5 15.Rd1 Bf5 (15...Bg4 16.h3 Bf3 17.Bf3–+) 16.Rd2 (16.Rd5 b6–+) 16...Rfd8–+ 17.Ra2 (17.Rd5 e6 18.Rd8 Rd8–+) 17...h6 18.h3 Be4 19.Ne5 (19.Qc1 Bf3 20.Bf3 Rd7–+) 19...Ne5 20.Qe5 Qe1 21.Kh2 (21.Bf1 Bb1 22.Re2 Qc1–+) 21...Bc6 22.Qc5?? (22.Nc7 Qf2 23.e4–+) 22...Qf2 (23.Bf3 Qa2 24.Bc6 bc6–+) 0–1. blackburne – marekt, ChessWorld.net, 2004.

3.e4 d5 4.Nc3 c6 5.ed5 cd5 6.Bb5 Bd7 7.Qe2 Qb6 8.Qe5 (8…f6 9.Qd5+/–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

3.e4 d5 4.ed5 Qd5 5.c3 Bg7 6.Nf3 0-0 7.Nbd2 (7.Be2 a5 8.b5 Bg4=) 7...a5 (7...Qc6 8.Qb3=) 8.b5 Nd7 9.Bc4 Qf5 10.Qe2 Nb6 11.Bd3 Qh5 12.h3 (12.Ne4 Nd5+=) 12...Nd5= 13.Ne4 Bg4 14.Ng3 Bf3 15.gf3 Qh4 16.Qe4 Qe4 17.fe4 (< 17.Be4 Nc3 18.a4 Ne4 (18...Bd4?! 19.Bb7 Rab8 20.Bh6 Rb7 21.Bf8 Kf8 22.Ne2=) 19.fe4 Bd4–/+; 17.Ne4?! Nf5=) 17...Nc3 18.Bd2 Na4 19.Rc1 Rad8 (better is 19...Rfc8!?=) 20.Rc7+/– Rd4 21.Bc2 Nb2 22.Rb7 (22.Ba5?! Ra8 23.Bb6 Rb4=) 22...Rc8 23.Be3 Rb4 24.a3 Rbc4 25.Bd1 Rc3 26.Re7 Nd1 27.Kd1 Ra3 28.b6 Ra2 (28...Kf8 29.Rc7 Rc7 30.bc7+=) 29.Rd7 Rb2 30.Rd2 Rb4 31.Ke2 f6 32.Rhd1 Nf7 33.Ra2 a4 34.Rd5 Bf8 35.Ra5 Rcc4 36.f3 Nd6 37.Ra8 Rc6 (37...Kf7 38.Nf1+=) 38.Nf1 Nc8 39.Rd2 Nb6 40.Bb6 Rbb6 41.Rdd8 Kg7 42.Rf8 Rb2 (42...Rc2 43.Kd1 Rf2 44.Rg8 Kf7 45.Ke1 Rf3 46.Nd2 Rh3 47.Rgc8 Rh1 48.Kf2 Rh2 49.Kg3 Rd2 50.Ra7 Ke6 51.Re8 Kd6 52.Rd8 Ke5 53.Rd2 Rb3 54.Kg2+–) 43.Kd3 Rb3 44.Kd4 Rd6 45.Kc5 Rd1 46.Rg8 Kf7 47.Rgf8 Kg7 48.Rg8 Kf7 49.Raf8 Ke6 50.Nd2 Rd2 51.Re8 Kf7 52.Ref8 Ke7 53.Re8 Kf7 54.Ref8 ½–½. Thor – Steve9843, ChessWorld.net, 2006.

3.e4+= d5 4.ed5 Qd5 5.Nc3 Qe6 6.Qe2=.

3.e4 Bg7 4.Nc3 0-0 5.h4 f6 (5...a5 6.b5 c5 7.h5 cd4 8.Nd5+/–) 6.f4 Nf7 7.h5 g5 8.h6 Bh8 9.Nf3 d5 (9...e6 10.Bd3+=) 10.fg5+/– fg5 11.e5 Nc6 (11...g4 12.Bd3 Re8+–) 12.b5+= Nce5 13.de5 Ne5 (13...g4 14.Ng5 Be5 15.Qd2 Bg3 16.Kd1+/–) 14.Ng5+/– Ng4 (14...Nf3 15.gf3 Bc3 16.Bd2 Bd4+–) 15.Nd5?? (better is 15.Bb2!? Ne3 16.Qd3+–) 15...Nf2?? (better is 15...Ba1 16.Ba3 Re8–+) 16.Ba3+= Nd1 17.Ne7 Qe7 18.Be7 Ne3 19.Bf8 Ba1 20.Bc5 Nf1 21.Rf1 Bc3 22.Ke2 Bd7 23.a4 Rd8 24.Rf7 Bg4 25.Kf2 Be5 26.Be3 Rd7 27.Rd7 Bd7 28.Ba7 Bf5 29.c4 Bf4 30.Be3 Bg5 31.Bg5 Bc2 32.Bf4 Ba4 33.Bc7 Bb3 34.c5 Bc4 0–1. Thor – Per Aspera, ChessWorld.net, 2006.

3.e4+= Bg7 4.Nf3 d5 5.Bd3 a5 6.ba5 0-0 +=.

3.e4+= Bg7 4.Bh6 Bh6= 5.c4 (5.Bc4 e6=) 5...Bg7 6.Nc3 (6.Nf3 d6=) 6...Nc6=+ 7.Nf3 Nb4 8.e5 (8.a3 Nc6–/+) 8...c5–/+ 9.a3 (better is 9.dc5!? Qc7 10.Qe2–/+) 9...Nc6–+ 10.Be2 (10.Nd5 e6 11.Nf6 Bf6 12.ef6 cd4–+) 10...Qa5 11.Qd2 Nd4 12.Nd4 (12.Nd5 Qd2 13.Kd2 Ne6–+) 12...cd4 13.Qd4?? (13.Nb5 Qd2 14.Kd2 Be5 15.Kd3–+) 13...Be5 (14.Qe5 Qe5–+) 0–1. Canuck – marekt, ChessWorld.net, 2004.

3.e4 Bg7 4.Bh6 Bh6 5.Nf3 0-0 6.e5 (6.Nc3 d6=) 6...d5 (6...d6!?–/+) 7.Bd3 f6 (7...Bg4 8.0-0+=) 8.0-0 (8.ef6 ef6 9.0-0 Nc6+=) 8...Bg4 (better is 8...fe5 9.Ne5 Nd7+=) 9.h3? (9.ef6 Rf6 10.Be2+=) 9...fe5?? (better is 9...Bf3 10.Qf3 fe5–+) 10.de5?? Bf3–+ 11.gf3 Bf4 12.Qe2 e6 13.Rd1 Qh4 14.Qf1 Be5 15.Qg2 Ba1 16.Re1 Rf6 17.c4 c6 18.cd5 cd5 19.Rc1 Nc6 20.b5 Ne5 21.Be2 Qf4 22.Re1 Rf5 23.Kf1 Raf8 24.Na3 Bc3 25.Rd1 Nf3 26.Bf3 Qf3 27.Qf3 Rf3 28.Nb1 Rf2 29.Kg1 Bb4 30.Rc1 Ra2 0–1. smn53 – labru, internet, 2009.

3.Nf3 d5 4.Bf4=.

3.Nf3 Bg7

4.e4 0-0 5.Nc3 (5.Bf4 d6+=) 5...d6 6.h4 (6.Bg5 c5+=) 6...c5= 7.h5 Ng4 8.Nd5 (8.hg6 fg6 9.Bc4 e6=) 8...Nc6 (8...e6 9.Ne3 Ne3 10.Be3 cb4 11.a3=) 9.hg6 fg6 10.Bg5 (< 10.bc5 dc5 11.Bg5 cd4=+) 10...h6 (10...Nf2 11.Kf2 Bd4 12.Ke1 Ba1 13.Bc4+/–) 11.Bc4 Rf7 12.Ne3 Qf8 13.Qd2 hg5 14.Ng5 (< 14.Bf7 Qf7 15.bc5 dc5–/+) 14...d5 15.ed5 (< 15.Nf7 dc4 16.Ng4 Kf7 17.Ne5 Ne5 18.de5 Be5–/+; 15.Bd5?! e6 16.Ne6 Be6 17.Be6 Ne3 18.fe3 cd4=) 15...Nd4 (15...b5 A) 16.dc5?? Rf2 (16...Ba1 17.Nf7 Qf7 18.Ng4 Bg4 19.Bb5–+; 16...bc4?! 17.Ng4 Bg4 18.Nf7 Qf7 19.Rc1–+) 17.Qd3 A1) 17...Ba1?! 18.Ng4 Bg4 19.Qg6 Qg7 20.Qg7 Kg7 21.Kf2 bc4 22.dc6 (22.Ra1? Nb4 23.Kg3 Bf5–+) 22...Bd4 23.Kg3=+; A2) 17...bc4 18.Qg6 Bf5 19.Nf5 Qf5 20.Qf5 Bc3 21.Kd1 Ne3 22.Kc1 Rf5 23.Ne4 Ba1 24.dc6–+; A3) 17...Nce5 18.d6 bc4–+ (< 18...Nc4 19.Nc4 Qf6 20.Rc1–+); B) 16.dc6 bc4 17.Ng4 Bg4 18.Nf7 (< 18.bc5 Rf4 19.c3 Qf5–/+) 18...Qf7 19.bc5 Qe6 20.Kf1 Qc6 21.Re1+=) 16.Ng4 Bg4 (16...Rf4 17.Nh7 Qf7 18.Nh6 Bh6 19.Rh6 Rg4=+) 17.d6= (< 17.Nf7 Qf7 18.c3 Nf3 19.gf3 cb4=+) 17...e6 (17...ed6 18.Bf7) 18.Nf7 Qf7 19.c3 Nf3 20.gf3 Qf3 21.0-0 Kf7 22.Be2? (22.Qg5 Bf6 23.Qc5–/+) 22...Qe2–+ 23.Qf4 (23.Qg5 Qf3 (23...Bc3?! 24.Qe7 Kg8 25.d7 Ba1 26.Ra1=+) 24.Qe7 Kg8–+) 23...Bf5 24.Rae1 (24.d7 Rd8 25.Rae1 Qh5–+) 24...Qh5 (24...Qa2?! 25.Qf3 Qa6 26.bc5–+) 25.Qg3 (25.Re3 Rh8 26.Kg2 Bh6–+) 25...cb4 26.Qg2 (26.cb4 Bh3 27.Rc1 Be5–+) 26...Rb8 27.cb4 Bh3 28.Qe4 (28.Qg3–+) 28...Qg5 (28...Bf1? 29.Qe6 Kf8 30.d7 Qg5 31.Kf1 Qb5 32.Re2+/–) 29.Kh2 Rh8 30.Qb7 Kg8 31.Qa8 Bf8 32.Qf8 Kf8 (33.Re6 Be6#) 0–1. rompepelotas – marekt, ChessWorld.net, 2004.

4.e4 a6 +=.

4.e4 d5 5.ed5 Qd5 6.Be2 +=.

4.Bf4 0-0 5.e3 d5 6.Be2 a6 7.0-0 Nf5 8.Nbd2 Nd7 9.a4 c6 (9...h6 10.c4+=) 10.c4 dc4 11.Nc4 Nb6 12.Be5 Nc4 13.Bc4 Nd6 14.Bd3 f6 15.Qb3 Kh8 16.Bg3 Bf5 (16...Bg4 17.Be2+=) 17.Rfd1 (17.Bd6 Bd3 18.Be7 Qe7 19.Qd3 Qb4+/–) 17...Ne4 18.d5 (18.Bf4 g5 19.Qc2 Nf2 20.Qf2 Bd3 21.Rd3 gf4 22.ef4 Qd6+=) 18...cd5 19.Be4 Be4 20.Nd4 Rc8 (20...f5 21.Ne6 Qb6 22.Ng7 Kg7 23.f3+/–) 21.f3 e5 22.fe4 ed4 23.Rd4 Qe7 (23...f5 24.Rd5 Qe7 25.e5+=) 24.Qd5+/– Rfe8 25.Rad1 f5 26.Bd6 Qh4 27.e5 Qg5 28.e4 Rc2 29.ef5 Qe3 30.Kh1 Re2 31.Rf1 gf5 32.Bc5 Qh6 33.Qc4 R2e5 34.Rd7 Re4 35.Qf7 Re1 36.Rg1 b5 37.ab5 ab5 38.Qf5 R1e5 39.Qf7 Rg8 40.Rgd1 Qh4 41.Qf1 Rge8 42.Qf7 Re1 43.Re1+/– Re1 44.Bg1 Qf6 45.Qa2 h6 46.Qd2 Rf1 47.Qe3 Qf5 48.Rd8 Kh7 49.h3 Rf4 50.Rd7!? Qd7 51.Qf4 Qe6 52.Qf1 Qc4 53.Qf5 Kg8 54.Bc5 Qe2 55.Kg1 Be5 56.Qg6 Bg7 57.Bd6 Qd1 58.Kf2 Qd2 59.Kg3 Qe3 60.Kh2 Qe2 61.Qf5 Qc4 62.Qf3 Qf7 63.Qd3 Qe6 64.Bf4 Qc6 65.g4 Qf6 66.Qd5 Kh8 67.Qe4 Kg8 68.Be3 Qb2 69.Kg3 Qb3 70.Kh4 Qf7 71.Kg3 Qb3 72.h4 h5 73.gh5 Bf8 74.Qg4 Kh7 75.Qf5 Kg8 76.Qg6 ½–½. Steve9843 – Per Aspera, ChessWorld.net, 2005.

4.Bg5 d5= 5.h3 (5.Nc3!?=) 5...Nf5+= 6.g4 Nd6 7.Bg2 a5 8.c3 (8.b5!?+=) 8...ab4–/+ 9.cb4 0-0 (9...Nc6 10.Qb3 h6 11.Bd2–/+) 10.0-0 (10.Nc3 Ne4 11.Rc1 Ng5 12.Ng5–+) 10...f5 (10...Nc6!? 11.Qb3 Nd4 12.Nd4 Bd4 13.Nc3–+) 11.gf5 (11.Nc3 Ne4 12.Ne4 fe4+=) 11...Bf5 12.Nc3 Ne4 13.Ne4 Be4 14.e3 Nd7 (14...Nc6 15.b5 Na5 16.Bf4–/+) 15.Nd2 Bg2 16.Kg2 Qe8 17.f4 Ra3 18.Nb3 (18.Rf3 c6+=) 18...Nf6 (18...Nb6 19.Qe2–/+) 19.Qc1+= Qa8 (19...Qa4 20.Nc5 Qb4 21.Rb1+=) 20.Na5 (20.Qc7 Rc8 21.Qe5 Rc2 22.Kg1 Raa2 23.Rfc1 Rg2 24.Kh1 Rh2 25.Kg1=) 20...Ra5 (better is 20...Rd3 21.Qc7 Re3+=) 21.ba5+/– Qa5 22.a3 (22.Rb1 Qa6+=) 22...Re8 23.Qc2 (23.Rb1 b6 24.Qc6 (24.Qc7?! Qd2 25.Rf2 Qe3=) 24...Qd2 25.Kf3+/–) 23...Ne4+= 24.Bh4 c5 25.Be1 Qa6 26.Qb3 e6 27.Rb1 cd4 28.ed4 Qe2 29.Bf2 Nd2 30.Qe3 Qe3 31.Be3 Nf1 32.Kf1 Re7 33.a4 Rc7 34.Rb6 Kf7 35.Ke2 Ke8 (better is 35...Kf6!?–/+) 36.Re6+= Kd7 (36...Re7 37.Re7 Ke7 38.Kf3+=) 37.Rb6= Kc8 38.Kd3 Rf7 39.Re6 Kd7 40.Rb6 Kc7 41.Re6 Kd7 42.Rb6 Kc7 43.Re6 ½–½. andytop10 (1910) – papsajt78 (1960), gameknot.com, 2015.

2.d4 Ng8

3.Bd2 Nf6 4.e3 Ne4 5.Bd3 Nd2 6.Nd2 e5 7.Rb1 Nc6 8.b5 Nb4 9.de5 Na2 10.Ne2 Qg5 11.c3 Qg2 12.Be4 Qg5 13.Qb3 Nc3 (better is 13...Nb4!?+/–) 14.Qc3+– (14.Nc3?! Qe5 15.Qc2 Qc5+/–) 14...Qd8 15.Nb3 c6 (15...d5 16.ed6 Qd6 17.Nbd4+–) 16.Na5 Qh4 17.Nf4 c5 18.Bb7 Rb8 19.Bd5 Qg4 20.Qc4 Qf5 21.Nd3 Be7 22.e4 Qf3 23.Rg1 0-0 24.Nc5 Qh5 25.Rd1 (better is 25.Qd4!? Qh2 26.Ke2 Qh5 27.f3 Qh2 28.Kd1 a6+–) 25...Qh2 26.Rg3 Bd8? (26...Qh1 27.Kd2 Qh6 28.Kd3+–) 27.Nab3 Qh5 28.Ra1 Bb6 29.Nd3 Qh2 30.Qc3 Bb7 31.e6! Qh1 (31...de6 32.Qg7#) 32.Ke2 Qh5 33.Kf1 Qh1 34.Rg1 Qh3 (34...Qh6 35.ef7 Kh8 36.Ne5 Bd5 37.ed5+–) 35.Ke2 Qh5 36.Ke1 g6 (36...Qh6 37.ef7 (< 37.ed7 Bd5 38.ed5 Rfd8+–) 37...Kh8 38.Nd4+–) 37.ef7 Rf7 38.Bf7 Kf7 39.e5 Rc8 40.Qb4 Qf5 41.Qf4 Qf4 42.Nf4 Rc2 (42...Re8 43.Nd3 d6 44.Ra4+–) 43.Ne2 Bd5 44.Nbd4 Rc4 45.Rd1 Rc5 46.Rg5 (better is 46.f4!? Ke7+–) 46...Bc4 47.f4 Rd5 48.Rc1 Bd3 49.Rg3 Be4 (49...Ba5 50.Kf2 Be2 51.Ne2 Rb5+–) 50.Rc4 d6 51.e6 Kf6 52.e7! Ke7 53.Nc6 Kf7 (53...Kd7 54.Re4 Rb5 55.Rc3+–) 54.Nc3 (better is 54.Re4!? Rb5 55.Re7 Kf6 56.Rh7 Rb1 57.Kd2 Rb2 58.Kd3 Rb3 59.Nc3 Kf5+–) 54...Bh1 55.Nd5 Bd5 56.Rc2 Be4 57.Ra2 d5 58.Na7 Bc7 59.Nc6 Bd6 60.b6 d4 61.Nd4 Bd5 (61...Kf6 62.Ra6 Bb7 63.Ra7+–) 62.Rb2 Bb7 63.Nb5 Bf8 (63...Bb8 64.Rd3 Bc6 65.Nc7+–) 64.Rc2 Bb4 65.Kd1 Be7 (65...Kf6 66.Rc7 Ba6 67.b7 Bb7 68.Rb7+–) 66.Rc7 Ba6 67.Re3 Bb5 68.Rce7 Kf6 69.b7 Ba4 70.Kd2 Kf5 71.b8Q Kg4 72.Qc8 Bd7 73.Qd7 Kf4 74.Qb5 h5 75.R7e4# 1–0. Bestia_03c – Mint_161, WB, 2000.

3.e4 e5 4.de5 Bb4 5.c3 Bc5 6.Qg4 Kf8 (6...g6 7.Qg3=) 7.Qg3+= d5 (7...d6 8.Nf3+=) 8.Bd3 Nc6 9.Nf3 d4 (9...Nge7 10.0-0+=) 10.0-0 (10.Bb5 Nge7+/–) 10...dc3 11.Rd1 Bb4 (11...Qd7 12.h3+=) 12.a3 (12.Ba3 a5+/–) 12...Ba5+= 13.Bc2 Qe8 14.Be3 Nge7 15.Nd4 Nd4 (15...h5 16.Nb3+=) 16.Bd4+/– Be6 (16...h5 17.Nc3 h4 18.Qg5 Bc3 19.Bc3+/–) 17.Nc3 c6 (17...b6 18.Ba4 c6 19.Ne2+/–) 18.Ne2 Ng6 (18...b6 19.Nf4+/–) 19.f4 Bc4 (19...Bb6 20.Bb6 ab6 21.Nd4+–) 20.Bd3 Bd3 21.Rd3 Bc7 22.Rad1 Kg8 23.Bc5 b6 24.Bd6 Bd6 25.Rd6 c5 26.Nc3+– h5 27.Qg5 Nf8 28.Rd8 Rd8 29.Rd8 f6 30.ef6 Qf7 31.Nd5 g6 32.Ne7 (32.Ne7 Kh7 33.f5 gf5 34.ef5 a6 35.Ng6 Qf6 36.Qh5 Kg8 37.Rf8 Qf8 38.Qh8 Kf7 39.Qf8) 1–0. Klaus Behrmann – macsek, ChessWorld.net, 2004.

3.e4 e5 4.de5 Qe7 5.Bf4 +=.

3.Nf3 d5 4.Bh6 gh6 5.Qd3 +=.

3.Nf3 e6 4.a3 a5 5.b5 c6 (5...d5 6.e3+=) 6.Qd3+/– cb5? (better is 6...f5!?+/–) 7.Qh7+– (7.Qb5?! Qc7+/–) 7...g6?? (7...Qf6 8.e4 g5+–) 8.Bh6 Bh6 9.Qg8 Ke7 10.Qd8 Kd8 11.e3 Bg7 12.Bb5 e5 (12...d5 13.Nbd2+–) 13.Ne5 f6 (13...Be5 14.de5 Nc6 15.f4+–) 14.Ng6 1–0. pfmx – basi, internet, 2009.

3.Nf3 e6 4.Bd2 Nf6 5.e3 d5 6.Bb5 Bd7 7.Bd7 Nbd7 8.0-0 Bd6 9.Na3 a5 10.Qe1 Be7 11.Rb1 Ne4 12.ba5 Ba3 13.Rb7 c6 14.Bc3 Bd6 15.a4 Bc7 16.Bd2 Nd6 17.Rb3 0-0 18.Qa1 c5 19.Rfb1 f6 20.Qa3 Nc4 21.Qa2 e5 22.Bc3 Ba5 (< 22...Na5 23.Rb5 Nc4 24.dc5–+) 23.Ba5 Ra5 (23...Na5?! 24.Rb5 Nc4 25.dc5–+) 24.Rb7 Ndb6 25.Qb3 ed4 26.ed4 Na4 27.Re1 Nab6 28.dc5 Nd7 (28...Rc5 29.Ree7 Qe7 30.Re7+/–) 29.c6 (29.Qb4 Nc5 30.Rbe7 Qd6–+) 29...Nc5 30.Qb4 Nb7 31.cb7 Qb6 (better is 31...Qd6 32.c3 Qb4 33.cb4–+) 32.Qb6 Nb6 33.Nd4 Nd7 34.Nf5 Rb5 35.Ne7 Kf7 36.Nf5 Kg6 37.Ne7 Kg5 38.Rd1 Rb7 39.Nd5 Rfb8 40.c4 Rb1 41.f4 Kg4 42.Rf1 Rf1 43.Kf1 Rb2 44.Ke1 Nb6 45.Nb6 Rb6 46.Kd1 Rb2 47.c5 Kf4 48.c6 Rb6 (48...Rg2 49.c7 Rg1 50.Kd2 Rg2 51.Kd3 Rh2 52.c8Q+/–) 49.c7 Rc6 50.Kd2 Rc7 51.Kd3 Ra7 52.g3 Kg4 53.Kc4 Ra2 54.Kd5 Rh2 55.Ke6 Rc2 56.Kf7 Rc7 57.Ke6 Kg3 58.Kf5 Rc5 59.Ke6 f5 (60.Kd6 f4 61.Kc5 h5–+) 0–1. Bestia02c – SSEChess202, computer chess game, 2000.

2.e3 e5

3.a3 d5 4.Bb2=.

3.a3 Bd6 4.Ne2 (4.Nc3!?+=) 4...0-0 5.Nbc3 c5 (5...Nc6 6.Ng3+=) 6.Ne4+= Be7 7.Nc5 (7.bc5 Na6 8.d4 ed4 9.ed4 Re8+/–) 7...Bc5 (better is 7...d6 8.Nd3 Nd7=) 8.Bb2?? (8.bc5 Nc6+/–) 8...Qf6?? (better is 8...Bb6–+) 9.bc5+= Ng4? (better is 9...Na6!?+=) 10.f3 Nh6 11.f4 Qh4 12.g3 Qh5? 13.Be5 Nc6 14.Bb2 Qf3 15.Rg1+– d5 16.cd6 Bd7 17.Bg2 Qh5 18.h3! 1–0. assad_ia – smn53, internet, 2009.

3.Qh5 d6 4.Nf3 Be7 5.Bb2?? (Better is 5.h3–/+) 5...Bg4–+ 6.Qh6 gh6 7.h3 Bf3 8.gf3 Rg8 9.Nc3 d5 10.a3 Bh4 11.Nb5 c6 12.Be5 cb5 13.Bg2 (13.Bb8 Qb8 14.Bb5 Kd8 15.Bf1–+) 13...Rg2 (14.0-0-0 Bf2–+) –+. oneskipado – jjmrk2, ChessWorld.net, 2003.

2.e4 c6

3.d4 Qb6 4.c3 Ng4?? 5.Qg4+– h6 6.Nf3 g6 7.Ne5 d6 8.Qc8 Qd8 9.Qd8 Kd8 10.Nf7 1–0. pierre – cyrano, ChessWorld.net, 2006.

3.Nf3 d5 4.e5 (4.ed5 Qd5 5.d4 Qd6+=) 4...Bg4= 5.d4 e6 (5...Nf5 6.c3=) 6.c3 (6.Bh6 gh6 7.c3 a5+=) 6...Be7 (6...Nf5 7.h3 Bf3 8.Qf3=) 7.Nbd2 (7.Bh6 gh6 8.Bd3 a5+=) 7...Nd7 (7...a5 8.b5=) 8.Bd3 (8.h3 Bf3 9.Nf3 Nf5+=) 8...a5= 9.a3 (9.b5!?=) 9...ab4+= 10.cb4 Bb4 11.Qb3 (11.ab4 Exploits the pin 11...Ra1) 11...Bd2 (11...Qa5 12.Bb2 Be7 13.0-0–/+) 12.Nd2 Rb8 13.f4 (13.Nf1 Qh4+=) 13...0-0 (13...Nf5 14.Bf5 Bf5 15.0-0–/+) 14.0-0 Nf5 (14...c5 15.Bb5–/+) 15.Qb1 (15.Qb4 Qh4+=) 15...Qh4 (15...Nd4 16.Bh7 Kh8 17.Bd3–/+) 16.Bb2 c5 17.h3 (better is 17.Bb5!? Rfd8 18.Bd7 Rd7 19.dc5–/+) 17...Bh3!–+ 18.gh3? (better is 18.Qe1 Qg4 19.Rf2–+) 18...Qg3 19.Kh1 Qh3 20.Kg1 Ne3 21.Bh7? Kh8 22.Be4 Qg3 23.Kh1 f5 24.Qe1 Nf1 25.Qf1 fe4 (25...fe4 26.Qg2 Qh4 27.Qh2 Rf4 28.Qh4 Rh4 29.Kg2 c4–+) 0–1. Bowers – Karnisky,Robert, Boulder Colorado, 1987.

2.e4 d5

3.ed5 Qd5 4.Nc3 Qd4 5.Nf3 (5.a3 Ng4 6.Qe2 Nc6=) 5...Qb4 6.Rb1 Qc5 7.Rb3 e6 8.Bb5 c6 9.d4 Qh5 10.Be2 Nf5 (better is 10...Qg6=) 11.g4! Qg4 12.Rg1 Qh3 13.Bf1 Qh5 14.Rg5 Qh6 15.Rf5! Qg6 (15...ef5 16.Bh6) 16.Nh4 (16.Rg5 Qf6+–) 16...Qg1 17.Rh5 Nd7 18.Ne4 Be7 19.Ng3 Bh4 20.Rh4 Nf6 (20...c5+–) 21.f4 Nd5 22.c4 (22...c5 23.cd5 Qd4 24.Bb2 Qd1 25.Kd1 ed5 26.Bg7+–) 1–0. Papov – London_Patzer, ChessWorld.net, 2005.

3.ed5 Qd5 4.Nc3 Qd6 5.a3 Nc6 6.Nf3 Nf5 (6...Bg4 7.Nb5 Qd7 8.Be2=) 7.Nb5 (7.Bc4 Nfd4=). marekt – DynamicPossibilities, ChessWorld.net, 2004.

3.ed5 Qd5 4.Nc3 Qd6 5.a3 Bg4 6.Be2 Be2 7.Nge2 e6 8.0-0 Be7 9.d4 Nf5 10.Bf4 Qd7 11.d5 0-0 (11...Bd6 12.Ne4+=) 12.de6 Qe6 13.Bc7 Nc6 (13...Bf6 14.Qd3+/–) 14.Nd5 Rfe8 15.Nef4 Qh6 16.Qg4 Ncd4?? (better is 16...Nfd4 17.c4 Qg5 18.Qg5 Bg5+/–) 17.c3+– (17.Ne7?! Ne7 18.Ra2 Nb5+=) 17...Nc6 (17...Qg5 18.Qg5 Bg5 19.cd4 Nd4+–) 18.Qf5 Bf8 19.Rfe1 Kh8 (19...b5+–) 20.Qf7 Re1 21.Re1 Rc8 (21...g5 22.Ne6 Qg6 23.Qg6 hg6+–) 22.Re8 Re8 23.Qe8 g6 24.Bd6 Kg8 (24...Nd4 25.Be5 Kg8 26.Ne7) 25.Nf6 (25.Nf6 Kh8 26.Bf8 Qh2 27.Kh2 Ne7 28.Be7 Kg7 29.Qf8) 1–0. jjmrk2 (2215) – JFRAY (1905), ChessWorld.net, 2003.

3.ed5 Qd5 4.Nc3 Qd6 5.Nf3 Qb4 6.Rb1 Qc5 7.Rb3 Qd6 8.d4 Nf5 9.Bc4 e6 10.0-0 Be7 11.d5 0-0 12.Ne4 Qd8 13.de6 fe6 14.Nfg5 Bg5 15.Ng5 Qd1 (15...Qf6 16.Re1 Nd4 17.Ne4+/–) 16.Rd1 Re8 17.Bf4 c5 18.Rh3 h6 19.Ne4 b6 20.g4 Nd4 21.c3 Ndc6 22.Bb3 Kh8 23.Rdd3 e5 24.Bh6! Be6 (24...gh6 25.Rh6) 25.Nd6 gh6 (25...Re7 26.Bg5 Kg8 27.Be7 Bb3 28.ab3 Ne7+–) 26.Ne8 Bb3 27.ab3 (27...a6 28.Rh6 Kg8 29.Rdd6+–) 1–0. Papov – Alissa, ChessWorld.net, 2005.

3.ed5 e6 4.Bb2 f6 (4...ed5 5.b5=) 5.Nc3 (5.Qh5 g6 6.Qf3 Be7 7.de6 0-0+–) 5...Bb4 6.Bc4 (6.Qh5 Kf8 7.Nf3 c6 8.de6 Be6+–) 6...Bc3 7.Bc3 (7.dc3 ed5 8.Bd5 Qe7 9.Ne2 Nc6+=) 7...e5 (7...0-0 8.de6 Re8 9.Qe2+=) 8.Qe2 Bg4 (8...0-0!?+–) 9.f3+– Bf5 10.f4 e4 11.Nf3 (better 11.Rb1 Nd7 12.Nf3+–) 11...Ng4?? (better 11...Qe7 12.Nd4 Nd7+–) 12.Nh4 Qd7 (12...Bd7 13.Rb1+–) 13.h3 Nh6 14.Rb1 (better 14.Qh5 Kd8 15.Bf6 Kc8+–) 14...b6 (14...0-0 15.Rb7 Kh8 16.0-0+–) 15.g4 Bg6 (15...0-0 16.Nf5 Nf5 17.gf5+–) 16.Bb5 c6 17.dc6 Nc6 (17...Qc7 18.g5 a6 19.Ng6 hg6 20.Qe4 Qe7 21.Bd3 Nc6 22.Rb6+–) 18.Ng6 Ng4 (18...hg6 19.Qe4 Kf7 20.Bc4 Kf8 21.Bb4 Nb4 22.Qa8 Qe8 23.Qe8 Ke8 24.Rb4 Kd8+–) 19.hg4 a5 20.Qc4 Qg4 21.Bc6 Kd8 22.Qd4 Kc7 (22...Kc8 23.Bb7! Kc7 24.Qb6 Kd7 25.Bc6 Ke6 26.Be8 Kf5 27.Rb5) 23.Qb6 Kd6 24.Bb5 1–0. Pierre – Tamtam73, internet, 2019.

2.e4 e5

3.a3 a5 4.b5 d5 5.ed5 Bc5 (5...Qd5 6.Nf3=) 6.Nc3 Ng4 7.Nh3 Bd4 8.Bb2 Nf6 9.Qf3 0-0 10.Be2 Nbd7 11.0-0 Re8 12.Rab1 Nb6 d5 draws heavy fire 13.Rfe1 h6 14.Bd3 Bg4 15.Qg3 Nbd5 (15...Qd7 16.Ne4 Ne4 17.Re4=) 16.Ne4 Bb2 17.Rb2 Bf5 (17...Bh3 18.Qh3 Nf4 19.Qf3+=) 18.Qf3 (18.Nf6 Qf6 19.Be4 Rad8=) 18...Ne4 (18...Bh3 19.Qh3 Nf4 20.Qf3+=) 19.Be4 (19.Qf5 A) 19...Nd2 20.Qh7 Kf8 21.Qh8 Ke7 22.Qg7 (worse is 22.Re5 Kd6 23.Re8 Qe8 24.Qe8 Re8–+) 22...Nf3 23.Kf1 Nh2 24.Ke2+=; B) 19...Nef6=) 19...Be4 20.Qe4 Nf6 21.Qe2 e4 22.Rb3 Qd6 23.Rd1 Rad8 24.Rc3 Re5 25.Qc4 Rd7 26.d4 Rf5 27.a4 Ng4 28.g3 Qg6 29.Qe2+= Qh5 30.Kg2 Rfd5–/+ 31.b6 c6 32.Rc4 Ne3!–+ (32...Ne3 33.Qe3 Qd1 34.Qe4 Rd4 35.Rd4 Qd4 36.Qe8 Kh7–+) 0–1. pierre (2075) – R_REZAEI (1910), Tuebingen internet, 2012.

3.a3 c5 4.b5 b6 5.Bc4 Qf6? (better is 5...a6+=) 6.Bd5+– Nc6 7.Nf3 Rb8 8.bc6 Bd6 (8...dc6 9.Bb2 Ng4+–) 9.d3 Ng8 10.Nc3 Ne7 11.Bg5 Qg6 12.Be7 Be7 (12...Ke7 13.Nh4 Qf6 14.Nf5 Kf8 15.Nd6 Qd6 16.Qh5+–) 13.c7 Rb7 14.Bb7 Bb7 15.Nd5 0-0 (15...Qd6 16.c3 0-0+–) 1–0. jjmrk2 (2065) – coolerdude (1675), ChessWorld.net, 2003.

3.a3 c6 4.d4 Qf6 5.Nf3 d6 6.de5 de5 7.Bg5 Qe6?? (better is 7...Qd6 8.Ne5 Qd1 9.Kd1 Ng4 10.Ng4 Bg4 11.Be2 Be6+/–) 8.Qd8# 1–0. marekt – Canuck, ChessWorld.net, 2004.

3.a3 d5 4.ed5 Qd5 5.Nc3 Qe6 6.Nf3 b6 7.Bd3+= Bb7 8.0-0 (8.Qe2 Nd7+=) 8...Bd6 9.Re1 0-0? (better is 9...Nd7!?+=) 10.Bh7!+– Kh7?? (better is 10...Kh8 11.Be4 c6+–) 11.Ng5 Kg8 12.Ne6 fe6 13.d3 Rf6 (13...Nf5 14.Ne4+–) 14.Ne4 Rg6 (14...Be4 15.Re4 Nd7 16.c3+–) 15.Qh5 Be4 16.Re4 Rf6 (16...Kh7+–) 17.Bh6 Rh6 (17...gh6 18.Qe8 Kh7 19.Qc8+–) 18.Qe8 Kh7 19.Qc8 Rf6 (19...a5 20.Qb7 Nd7 21.Qa8 ab4 22.ab4+–) 20.Qb7 1–0. marekt – markmooney, ChessWorld.net, 2004.

3.a3 d5 4.ed5 Qd5 5.Nc3 Qe6 6.Nf3 Bd6 (7.Bd3 a5=). DynamicPossibilities – marekt, ChessWorld.net, 2004.

3.a3 d5 4.ed5 Qd5 5.Nf3 a5 6.Qe2 ab4 7.Ne5 Be6=.

3.a3 d6 4.Nf3 (4.Nc3 Ng4=) 4...Bg4 (4...f5 5.Qe2=) 5.h3 Bh5 6.d4 Nc6 (6...ed4 7.Qd4 Bf3 8.gf3+=) 7.d5 Nd4? (better is 7...Nb8+=) 8.g4+– Bg6 9.Nd4 ed4 10.Bb5 Ke7 11.h4 Be4?? (11...f6+–) 12.Qe2 (12...f5 13.Bg5 Kf7 14.Bd8 Rd8 15.0-0+–) 1–0. marekt – blackburne, ChessWorld.net, 2004.

3.a3 Be7 4.d4 ed4 5.Nf3 (5.Bh6 gh6 6.Nf3 Nc6+=) 5...d6 (5...Ng4 6.Nd4 Nc6 7.Nc6 dc6 8.Qd8 Bd8 9.Bb2=) 6.Bh6+= gh6 7.Nd4 (< 7.Qd4 Bf6 8.Bb5 c6=+) 7...Bd7 (7...Rg8 8.Nc3+=) 8.Nc3 (8.Bb5 Bb5 9.Nb5 Bf6+=). marekt – sugamuxi, ChessWorld.net, 2004.

3.a3 g6 4.Bc4 Qf6 (better is 4...a6!?+=) 5.Nc3+– c6 6.h3 (better is 6.Nf3+–) 6...Qh4? (better is 6...b5 7.Ba2 a5 8.ba5 Ra5+/–) 7.Nf3+– Qf6 (7...Qe7 8.d4 d5 9.Ba2+–) 8.d4 (better is 8.0-0 b5 9.Bb3 Qg7+–) 8...d6? (8...ed4 9.Bg5 Qg7 10.Nd4 a5+–) 9.de5 de5 (9...Qg7 10.Qd3 de5 11.Bh6 Qh6 12.Ne5+–) 10.Bg5 Qd6 11.Qd6 Bd6 12.Bh6 b5 (12...Bf8 13.Bf8 Rf8 14.Ne5+–) 13.Rd1 (better is 13.Nb5!? cb5 14.Bd5 Nd7 15.Ba8 Ke7+–) 13...Ke7 14.Bf7! Bb4 (14...Kf7 15.Rd6 Deflection (15.Rd6 Overloading)) 15.ab4 Kf7 16.Ne5 Kf6 17.0-0 Ke5 (17...Re8 18.Nf3 Kf7 19.Bf4+–) 18.Bg7 Ke6 19.Bh8 Kf7 (19...Na6 20.Rd8 Bb7 21.Ra8 Ba8 22.Rb1+–) 20.Rd8 Nd7 21.Rd1 Ke7 (21...Nb6 22.Bd4 Nd7 23.Rh8+–) 22.Rg8 (better is 22.R1d7 Bd7 23.Ra8 h5+–) 22...Bb7 (22...a5 23.ba5 h5 24.Rg7 Ke8 25.Rdd7 Bd7 26.Rg8 Kf7 27.Ra8+–) 23.Ra8 (23.Rg7 Kf8 24.Rdd7 Ba6 25.Rh7 g5 26.Bg7 Ke8 27.Bh6 Rd8 28.Rhe7) 23...Ba8 24.Ra1 (24.Ra1 c5 25.bc5+–) 1–0. andytop10 (2010) – kinshukb, gameknot.com, 2015.

3.Bb2 f6 (--> 1.b4 e5 2.Bb2 f6 3.e4 Nh6).

3.b5 Bc5 4.d3 Qf6 5.Qf3 Qf3 6.Nf3 (< 6.gf3 Bd4 7.c3 Bc5=+) 6...d6 (better is 6...Ng4!?–/+) 7.Bh6= gh6 8.Nc3 Bb4 9.Kd2 a6 10.Be2 Bc3 11.Kc3 ab5 12.Nh4 Be6 13.h3 Nd7 (13...Ba2? 14.Kb2+–) 14.Bg4 Nc5 15.Be6 fe6 16.Rhf1 0-0 17.g3 Ra3 18.Kb4 Rfa8 19.Kb5?? (19.Rab1–+) 19...R3a4 (20.f4 R8a5; 19...Ra2?! 20.Ra2 Ra2 21.Rc1=+) 0–1. coolerdude (1670) – jjmrk2 (2015), ChessWorld.net, 2003.

3.b5 d5 4.ed5 Qd5 5.Nf3 Bg4 6.Be2 Nd7 7.c4 Qe6 8.h3 Bf3 9.Bf3 0-0-0 10.d3 Bb4 11.Bd2 Bd2 12.Qd2 Nf5 13.Bg4 Nc5 14.Be2 Nd3! 15.Bd3 (15.Qd3 Rd3) 15...e4 16.0-0 Rd3 17.Qe2? (better is 17.Qa5 Kb8 18.Nc3–+) 17...Nd4 (17...Qc4?! 18.Nd2 Nd4 19.Qg4 (19.Nc4? Ne2 20.Kh2 Nc3–+) 19...Qe6 20.Qe6 fe6 21.Ne4–+) 18.Qb2 Rd8 19.Nc3 (19.Re1 Rh3! 20.Nd2 Qe5 21.gh3 Ne2 22.Re2 Qb2–+) 19...Rh3! 20.Ne4?? (20.gh3 Nf3) 20...Qe4 21.Rfe1 (21.f3 Qe5 22.gh3 Ne2 23.Qe2 Qe2 24.Rf2 Qc4 25.Rb1–+) 21...Nf3! 22.gf3 Qf3 (23.Qg7 Rh1) 0–1. JFRAY (1880) – jjmrk2 (2210), ChessWorld.net, 2003.

3.c3 c6 4.Bc4 b5 5.Bb3 d6 6.d4 ed4 7.Qd4 (7.Qd4 Ng4 8.a4 ba4 9.Ra4+=) 1–0. Patrick F – papa_Ernie, ChessWorld.net, 2011.

3.Bc4 Bb4 4.Bb2 d6 5.Nf3 Nc6 6.h3 Qe7 7.Nc3 Bc3 8.Bc3 Be6 9.Qe2 a6 10.a4 (10.Rb1 b5 11.Bd5 Qd7=) 10...Bc4+= 11.Qc4 0-0 12.0-0 Kh8 13.Rab1 Rab8 14.Rb2 Rfc8 (14...Qe6!? 15.Qd3 f5=) 15.Rfb1+= Nd8 16.d4 f6 17.de5 (17.a5 c6=) 17...fe5 (17...de5 18.Nh4=) 18.Bd2+= Nhf7 19.Rb3 c6 20.a5 Rc7 21.Be3 Qe6 22.Qe2 c5 23.Rb6 Qe7 (23...Qa2!?=) 24.Ra6+= Rc6 25.Rab6 Rb6 26.Rb6 Rc8 27.Qb5 h6 28.g3 Rc7 29.Nh4 Qd7 30.Ng6 Kg8 31.Qd7 Rd7 32.a6 ba6 33.Ra6 Nh8 34.Nh8 Kh8 35.Kf1 Kg8 36.Ke2 Kf8 37.f4 ef4 38.gf4 Kf7 39.h4 Ne6 40.f5 Nf8 (40...Nc7 41.Rb6+=) 41.Bf4+/– Ke7 42.f6 (42.Rc6!?+/–) 42...gf6+= 43.Bh6 Ng6 44.h5 Ne5 45.Ra8 Ng4 46.Bf4 Ne5 (46...Ke6 47.Rg8 Ne5 48.h6+=) 47.h6+/– Ng6 48.Kf3 (48.Bg3 Kf7+/–) 48...Kf7 (48...Ke6 49.Bd2+=) 49.Bg3+/– d5 50.ed5 Rd5 51.Ra7 Ke6 52.Ra6 (52.Rg7 Ne5 53.Be5 Re5+/–) 52...Kf5 (52...Kf7 53.h7 Rh5 54.Bd6=) 53.Rc6 Kg5 54.h7 Kh6 55.h8R (55.Rc7!? Nh8 56.Bf2+=) 55...Nh8= 56.Rf6 Kg7 57.Rc6 Nf7 58.Ke4 Rh5 59.Bf4 Kf8 60.Bd6 Attacking the isolated pawn on c5 60...Nd6 61.Rd6 Ke7 62.Rd5 Rh4 63.Kd3 c4 64.Kc3 Ke6 65.Rd4 Rh8 (65...Rh2!?=) 66.Kc4+/– Rh5 67.Kb4 Rh8 68.c4 (68.c3 Rb8 69.Ka4 Rc8+/–) 68...Ke5+= 69.Rd1 Rb8 70.Kc3 Rc8 71.Rd5 Ke6 72.Kb4 White intends c5 72...Re8 (72...Rb8 73.Rb5 Rf8 74.Rh5=) 73.Rh5 (73.Rd4 Rb8 74.Kc5 Ke5 75.Rd5 Ke6 76.Rd6 Ke5+/–) 73...Re7 (73...Kd6 74.Rh6 Kc7 75.Kb5=) 74.c5 (74.Kb5 Kd7+/–) 74...Rb7 75.Kc4 Rb2 (75...Rb1 76.Rh7+=) 76.Rh3 (76.Rh7 Rb1+=) 76...Rc2 (better is 76...Kd7!?=) 77.Kb5+/– Kd7 78.Rh7 Kc8 79.Kc6 Kb8 80.Rh8 Ka7 81.Rh5 Rc3 (81...Kb8 82.Rg5+/–) 82.Kd6 (82.Kc7 Rg3 83.Rd5 Rg2+–) 82...Rc4 (82...Kb8 83.Rh8 Kb7 84.Rh7 Kb8 85.Rg7+/–) 83.Rh7 (better is 83.Kc7!? Rg4 84.Rh7+–) 83...Kb8+= 84.Kd5 (84.Rg7 Kc8+/–) 84...Rc3 85.c6 Rc2 86.Rb7 Kc8 87.Rb4 Rc3 88.Rc4 Rc4 89.Kc4 Kc7 90.Kd5 Kc8 91.c7 Kc7 ½–½. kupovgeorge (1880) – andytop10 (1905), gameknot.com, 2015.

3.d4 Bb4 4.c3 Ba5 (4...Bd6 5.Bh6 gh6 6.Nf3 ed4 7.cd4=) 5.Nf3 (5.Bh6 gh6 6.de5 Nc6+=) 5...d6 (5...ed4 6.Qd4 0-0 7.Bh6 gh6 8.Qe5=) 6.Bc4 (6.Bh6 gh6 7.de5 0-0+/–) 6...f6 (6...ed4 7.Bg5 Qd7 8.Qd4=) 7.0-0 Bg4 8.Bh6 gh6 9.a4 (9.h3 Bh5+=) 9...Bf3 (better is 9...Nc6!?=) 10.Qf3+/– (10.gf3?! Nc6=) 10...Nc6 11.Bb5 a6 12.Bc6 bc6 13.de5 (13.Qh5!? Kd7 14.Rd1+/–) 13...fe5= 14.Qh5 Kd7 15.Qh6 Rb8 16.c4 (16.Nd2 Qg8+=) 16...Rb3 (16...Qg8 17.Ra3=) 17.f4 (17.Qg7 Ke6 18.Qg4 Ke7+=) 17...Bb6 18.Kh1 Qg8 (18...Qf8 19.Qh4=) 19.fe5 de5 (19...Bd4 20.Nd2 Ba1 21.Nb3 Be5 22.Qh3 Ke7 23.Na5+=) 20.a5 Rb2?? 21.Qh3+– Kd6 22.Qd3 Bd4+= 23.Nc3?? Qg2 0–1. maz_manchester – I need chocolate..., ChessWorld.net, 2005.

3.Nf3 Bb4 4.c3 Bd6 5.Bc4=.

3.Nf3 Nc6 4.b5 Nd4 5.Bb2 (5.Nd4 ed4 6.Bc4 Qh4=) 5...Nf3 6.Qf3 d6 7.Bc4 Qe7 (7...Bg4 8.Qc3=) 8.0-0 Qh4 9.g3 (9.d4 ed4 10.Bd4 Be6+=) 9...Qg5 (9...Qh3 10.Nc3=) 10.d3 (10.Bd5 Bd7 11.Bb7 Rb8+/–) 10...Bg4= 11.Qg2 (11.Qe3 Qe3 12.fe3 c6=) 11...Qh5+= 12.f3 (better is 12.f4!?+=) 12...Bh3–/+ 13.Qf2 Bf1 14.Qf1 Be7 15.Nd2 Qg5 (15...Bg5 16.Nb3–/+) 16.Bc1 Qe3 (16...c6 17.Rb1–/+) 17.Kh1 c5?? (17...Qb6 18.Nb3+=) 18.bc6 (better is 18.Nb3 Qc1 19.Qc1+–) 18...bc6+= 19.Nb3 Qb6 20.f4 0-0 21.fe5= Ng4 22.ed6 Bd6 23.Bf4 Nf2 24.Kg2= Bf4 25.Qf2 Be3 26.Qe2 Rfe8 27.Qf3 h6?? 28.Bf7+– Kh7 29.Be8 Re8 30.Qf5 Kg8 31.c4 Rf8 32.Qe6 Kh8 33.d4! Rf2 34.Kh3 Bd4 35.Rd1 Qd8?? 36.Nd4 c5 37.Qe5 cd4+= 38.Rd4 Qc8 39.g4 Qf8? 40.Rd7+– Qa3 41.Kh4 Qf8? 42.Rb7 a5?? 43.Rb8 Rh2 44.Kg3 (44.Kg3 Rf2 45.Rf8 Rf8 46.Qa5+–) 1–0. DWSU (1645) – JanAnton (1615), ChessWorld.net, 2009.

3.Bb2 Bb4

4.Be5 0-0 5.c3 Nc6 6.Bf4+= Ba5 7.Bh6 gh6 8.Bd3 (8.Bc4 Re8 9.Bd5 Ne7 10.Qg4 Kf8=) 8...d5 9.Nf3?? de4–+ 10.Be4 Re8 11.d3 f5 12.Qb3 Be6 13.Qb7 fe4 14.de4 Bc4 15.Nbd2 Qd3 16.Kd1 Red8 17.Qc6 Qc3 (18.Qe8 Re8–+) 0–1. Kevin@home – marekt, ChessWorld.net, 2004.

4.Be5 0-0 5.c3 Nc6 6.Bg7 Kg7 7.cb4=.

4.Be5 0-0 5.c3 Re8!? 6.cb4 Re5 =+.

4.Be5 0-0 5.Bf4? Qf6–+ 6.Bh6 Qa1 (6...Qh6?! 7.c3 Qf6 8.d4=; 6...gh6?! 7.c3=) 7.Be3 Qa2 8.Nf3 d5 9.ed5 Bf5 10.Bd3? (10.c3–+) 10...Bd3 11.cd3 Qd5 12.0-0 Qd3 13.Ne5 Qe4 14.Nf3 Nc6 15.Qb3 Qe6 16.Qe6 fe6 17.d4 h6 18.Rc1 a5 19.Ne5 Ne5 20.de5 Rf7 21.Nc3 Bc3 22.Rc3 a4 23.Bc1 Rd8 24.g3 b5 25.Ba3 g5 26.Rc6 Rd1 27.Kg2 Rd2 28.Re6 Rff2 29.Kh3 h5 30.Rg6 (30.Re8 Kf7 31.Re7 Kg6 32.Re6 Kf5 33.Rf6 Ke5 34.Rf2 Rf2 35.Bc5 g4 36.Kh4 Rh2 37.Kg5–+) 30...Kh7 (31.Rg7 Kg7 32.Bf8 Kf8 33.e6 Rh2) 0–1. coolerdude (1670) – jjmrk2 (2105), ChessWorld.net, 2003.

2.e4 e6

3.a3 a5 4.b5 c6 5.Bb2 (5.d4 Ng8+=) 5...d5 6.e5 (6.ed5 ed5 7.Nf3 Nf5+=) 6...Qb6 7.Nc3 a4 8.d4 (8.Nf3 Bd7=) 8...Bd7 9.Rb1 cb5 10.Nb5? (better is 10.Bc1 b4 11.Bh6 gh6 12.Na2=) 10...Bb5–+ 11.Bc3 Nc6 (11...Ra5 12.Nf3 Nc6–+ (12...Ba3?! 13.Qd2 Bb4 14.Rb4–/+)) 12.Rb5= Qc7 13.Qb1 Ra7 14.Qb2+= Be7 15.Bd3 f6 16.f4 0-0 17.Nf3 fe5 18.fe5 Ng4 19.Bd2+/– h5 20.0-0+– Nd8 21.c4 dc4+= 22.Rc1 Qd7= 23.Bc4 Kh8 24.d5+– ed5 25.Rd5 Qe8 26.h3 Nh6 27.Bd3 Nf5 Black plans h4 28.e6 Ng3 29.Qe5 h4 30.Be1 Nc6 31.Qe3 Ra8? 32.Bg3 hg3 33.Qe4 Threatening mate: Qh7 33...g6 34.Nh4 Rf6 35.Ng6 Rg6 36.Qg6 Qg6 37.Bg6 Ba3 38.Rc4 Bb2 39.Rg5 Bd4? 40.Kf1 a3= 41.Bb1 Rf8?? 42.Ke1 Rf4?? 43.Kd1 Rf1 44.Kc2 Rf2 45.Kd3 a2 Threatening mate... how? 46.Ba2! Ra2 47.Rc6! bc6 48.Kd4 Rg2 49.e7 Re2 50.Re5 (50.Re5 Kg8 51.e8Q Kg7 52.Rg5 Kf6 53.Rg6 Kf5 54.Qf7) 1–0. Bowers – Karnisky,Robert, Denver Colorado, 1987.

3.a3 a5 4.b5 d5 5.e5=.

3.a3 b6 4.d4+= g6 (4...Bb7 5.Bh6 gh6 6.Nd2+=) 5.Nf3+/– Bb7 6.Bd3 f5 7.Qe2 fe4 8.Be4 Be4 9.Qe4 c6 10.Bg5 Qc8 11.Bf6 Rg8 12.Ng5 d5 (12...a5 13.Nh7 Nf5 14.b5+/–) 13.Qe2+– (worse is 13.Qe6 Qe6 14.Ne6 Bd6+/–) 13...Nf5 14.Nh7 (14.g4 Bg7 15.Nh7 Nd6+–) 14...a5 (14...Qd7 15.Nf8 Rf8 16.Be5+–) 15.ba5 (15.Nf8?! Rf8 16.Be5 ab4+=) 15...Ra5 16.0-0 (16.g4 Nd6 17.Be5 Ke7+–) 16...Ra4 (16...Ra7 17.Ng5+/–) 17.Re1+– (17.Nf8?! Rf8 18.Be5 Nd4+=) 17...Kf7 18.c3 (18.Nd2 Bg7 19.Bg7 Kg7+–) 18...Bh6 (18...Bd6 19.Be5 Be7 20.Bf4+–) 19.Nd2 (19.g4 Ne7+–) 19...Re8 20.g4 Nd7 21.Bg5+– Kg7 22.gf5 Kh7 23.fg6 Kg6 24.Bh6 Kh6 25.Qe3 Kg6 26.Qg3 Kf7 27.Nf3 Do you see the mate threat? 27...e5 28.Kh1 e4 29.Ng5 Ke7 30.f3 (30.f3 Qb8 31.Qg4+– (31.fe4?! Qg3 32.hg3 Kf6 33.Nh7 Kf7+–); 30.Ne4 de4 31.Re4 Kf7 32.Rf4 Nf6+–) 1–0. Rosner,Dirk – Van Esbroeck,Dirk, email SOK–99–E005A, 1999.

3.a3 d5 4.e5=.

3.a3 Rg8 4.Bb2 (--> 2.Bb2 Rg8 3.e4 e6 4.a3).

3.a3 Qh4 4.Nc3 g6 5.Nf3 Qd8 6.d4 Bg7 7.Bc4 0-0 8.0-0 d6 9.Re1 Ng4 10.Bg5 Qd7 11.e5 de5 12.de5 Nc6 13.Bf4 a6 14.Qd7+– Bd7 15.Rad1 Bc8 16.h3 Nh6 17.Ne4+– Nf5 18.Nf6 Kh8 19.Bd3 Nce7 20.Be4 c6 21.c4 Bf6 22.ef6 Ng8 23.g4 Nfh6 24.Bd6 Rd8 25.g5 Nf5 26.Ne5 (26...Ngh6 27.Bc5+–) 1–0. marekt – Ryaad Aabid, internet, 2005.

3.Bb2 Bb4?? 4.Bg7+– Rg8 5.Bh6 Qf6 6.c3 Bc5 7.Be3 Bd6 (7...Be3 8.de3 d6 9.Qf3+–) 8.Nf3 Nc6 9.Nd4 a6 10.Qh5 Qg6 11.Qh3 Qe4 12.d3 Nd4?? 13.de4 (13.cd4?! Qg6+–). coolerdude – oneskipado, ChessWorld.net, 2003.

3.Bb2 c6 4.Nf3 a5 5.b5 f5 6.ef5 Nf5 7.a4 Bc5 8.d4 Bd6 9.Bd3 b6 10.0-0 0-0 11.c4 c5 12.Nc3 Bb7 13.Be4 Be4 14.Ne4 Qc7 15.d5 e5 (Better is 15...Bf4!?+/–) 16.Nd6+– Qd6 17.Be5 Qg6 18.d6 Re8?? (Better is 18...Qe6+–) 19.Qd5 Qf7 20.Qa8 Nc6 21.Qe8 (21.Qc6 dc6) 21...Qe8 22.bc6 dc6 23.Rfd1 Nd4 24.Bd4 cd4 25.Rd4 c5 (25...Qd7 26.Ne5 Qe8 27.d7+–) 26.d7 (26...Qd7 27.Rd7+–) 1–0. jjmrk2 (2035) – coolerdude (1615), ChessWorld.net, 2003.

3.Bb2 Rg8 (--> 2.Bb2 Rg8 3.e4 e6).

3.h3 Bb4 4.a3 (4.c3 Be7+=) 4...Bc5 (4...Ba5!?–/+) 5.d4= Be7 6.Bh6 gh6 7.Nf3 c6 (7...d5 8.e5=) 8.Nc3 (8.e5 d6=) 8...d5 (better is 8...Qa5 9.Qd3 Bb4+= (worse is 9...Ba3 10.Nd2+/–)) 9.Ne5? (9.Qd2 Qa5 10.Nb1 Qd2 11.Nbd2 Rg8+=) 9...Nd7 (9...Qa5 10.Qd2 Bb4 11.ab4 Qa1 12.Ke2–+) 10.Ng4 (10.Nd7!? Bd7 11.Qd2+=) 10...h5 (10...Qa5 11.Qd2 Bb4 12.ab4 Qa1 13.Ke2–+) 11.Ne3–/+ Nf6 12.e5 Nd7 13.Qh5 Nf8 14.Bd3 Bd7 15.Ng4?? Qa5–+ 16.0-0 Qc3 17.Nh6 0-0-0 18.Nf7 Rg8 19.Nd8–/+ Kd8 20.Bh7?? Rh8–+ 21.Qe2 Rh7 22.f4 Qd4 (22...Qd4 23.Kh2 Qa4–+) 0–1. RaymundG – ANZARBOND (1725), internet, 2010.

2.e4 g6

3.Bb2+= f6 4.Nc3 Bg7 5.b5 0-0 6.Nf3 e5 7.Bc4 Kh8 8.0-0 a6 9.a4 ab5 (9...f5 10.d3+=) 10.ab5+/– Ra1 11.Qa1 c6 (11...d6!?+/–) 12.Qa8+– cb5 13.Nb5 (13.Qb8?! bc4 14.Qd6 b6=) 13...Nc6 14.Ba3 Re8 15.Nd6 Rf8 16.Ra1 (worse is 16.Nc8 Qc8 17.Qa4 Re8+/–) 16...Nf7?? (better is 16...f5 17.Nb7 Bb7 18.Qb7 Re8+–) 17.Nf7 Rf7 18.Bf7 1–0. pierre (2090) – helmisflorin, Tuebingen internet, 2012.

3.Bb2+= f6 4.Nf3 Bg7 5.d4 Nf7 6.Bd3 d6 7.0-0 Nc6 (7...0-0 8.Nbd2+=) 8.b5 Na5 9.Bc3+/– b6 10.Ba5 ba5 11.c4 Bd7 12.Nc3 a6 13.Rb1 ab5 14.cb5 0-0 15.Bc4 e6 16.Qb3 Qe8 17.Qa3 Ng5 18.Ng5 fg5 19.Ne2 Kh8 20.Rfc1 e5 21.Qd3 h6 22.Bd5 Ra7 23.de5 Be5 24.Qe3 Qb8 25.b6 cb6 26.Rb6 Qd8 27.h4 Bf4 28.Nf4+– gf4 29.Qc3 Qf6 30.Rb8! Kh7 31.Rf8 1–0. marekt – delair, ChessWorld.net, 2004.

2.Nf3 d5

3.a3 a5 4.b5=.

3.a3 e5 4.Ne5 a5 (4...Bd6 5.d4 Be6 6.Nc3+=) 5.Bb2+= ab4 6.ab4 Ra1 7.Ba1 Bd6 8.c4 f6 9.Qa4 c6 (9...Kf8 10.Nf3 dc4 11.b5+=) 10.Nf3 dc4 11.b5 Nd7 12.Qc4 Nc5 13.bc6 Qb6 14.Na3 bc6 15.Nd4 Ng4 (15...Ne4 16.Ndb5 cb5 17.Qe4 Kf7 18.Bb2+=) 16.Qc2+/– Bh2? (16...Qa5 17.Bb2 Qa4+/– (17...Nh2 18.Nc4 Qc7 19.Nd6 Qd6 20.Rh2 Nd3 21.Qd3 Qh2 22.Qe4 Kf8 23.Qc6+–)) 17.g3+– 0-0 (better is 17...Kf7 18.e3 h5 19.Bc4 Kf8+–) 18.Bh3 Nd3 (18...Bg3 19.fg3 g6+–) 19.Qd3 Qc5 (19...Ne5 20.Qc2 Bh3 21.Rh2 c5+–) 20.Qc4 Qc4 21.Nc4 Ne5 (21...c5 22.Nf3+–) 22.Nf5 Nc4 23.Ne7 Kf7 24.Nc8 (24.Rh2?! Bh3 25.Nc6 Ra8+=) 24...Bg3 (24...Rd8 25.Bc3 Bg3 26.fg3+–) 25.fg3 Rd8 (25...g6 26.d3 Ne5 27.Kd2+–) 26.d3 Ne5 (26...Na5 27.Bc3 Nb3 28.Kf2+–) 27.0-0 Rd5 28.Bg2 Rd8 29.Be5 Rc8 30.Bf4 h5 31.Kf2 Ke6 (31...Ke7 32.Rb1 g6 33.Rb7 Ke6 34.Bh3 f5 35.Bg2+–) 32.Rc1 g6 (32...Ke7 33.Bh3 Ra8 34.Rc6+–) 33.Bc6 g5 (33...Ke7 34.Rc4+–) 34.Bd2 Rb8 (34...Rd8 35.Be4 Rd6 36.Rh1+–) 35.Bf3 Rb6 (35...Rb2 36.Bc3 Rb6 37.Bh5+–) 36.Bh5 Rd6 37.Rc8 Rb6 38.Re8 Kd7 39.Rf8 Ke7 40.Rf7 Ke6 41.Bc3 Rb3 42.Rf6 Ke7 43.Bd4 Rb1 44.Rg6 Rh1 45.Rg5 Kd6 46.e4 Rh2 47.Ke3 Ke7 48.Rg7 1–0. marekt – m.davidson, internet, 2015.

3.Bb2 e6 4.e3 Nd7 (4...f6 5.a3=) 5.Nc3 Nf6 6.a3 Bd6 (6...c6 7.Bd3=) 7.Nb5+= Bd7 8.Nd6 cd6 9.h3 0-0 10.c4 a5 (10...dc4!? 11.Bc4 Rc8=) 11.g4+= Ne4 12.cd5 ed5 (12...Rc8 13.Bg2+=) 13.d3 Ng5 14.Bg2 Nf3 15.Qf3 Be6 16.Qf4 ab4 17.Qd4 Qg5 18.0-0 (18.Qb4 Qe7+/–) 18...f5 19.f4 (19.Bd5 Bd5 20.Qd5 Nf7 21.ab4 Ra1 22.Ba1 f4+/–) 19...Qg6 20.g5 (20.Bd5 Bd5 21.Qd5 Kh8+=) 20...ba3= 21.Ra3 Ra3 22.Ba3 Nf7 23.Rc1 b5 24.Bb2 h6 25.h4 hg5 26.hg5 Nd8 27.Rc7 Rf7 28.Qb6 Rc7 29.Qc7 Nf7 30.Bf3 Kh7 31.Qe7 b4 32.Kf2 b3 33.Qf8+– Ng5 34.fg5 Qg5 35.Qd6 Bf7 36.Qc7 (36.Qc7 d4 37.Bd4+–) 1–0. R_REZAEI (1925) – pierre (2060), Tuebingen internet, 2012.

3.d4 Ng4 4.e3 Nc6 (4...e5 5.de5 Bb4 6.c3=) 5.Bb2 (better is 5.b5!? Nb8 6.Bd3+=) 5...Nb4+= 6.h3 Bf5 7.Bd3 (7.hg4!? Nc2 8.Ke2=) 7...Nd3–/+ 8.cd3 Nf6 9.Nc3 e6 10.0-0 Be7 11.Nh4 0-0 12.g4 (12.Nf5 ef5 13.Qf3 Re8+=) 12...Bg6 13.Ng6 fg6 14.f4 c5 15.Ne2 Qb6 (15...c4 16.dc4 dc4 17.Qc1–+) 16.Bc3 c4 17.dc4 dc4 18.Ng3 White prepares the advance f5 (18.g5 Nd5 19.Qd2 Qc6–/+) 18...Nd5–+ 19.Qe1 (19.Qd2 Rac8–+) 19...Bh4 20.Kh2 Qd6 (20...g5 21.Rb1 Qa6 22.Qd2–+) 21.Rf3 (better is 21.a3–+) 21...g5 22.f5 (22.Bd2–+) 22...ef5 23.gf5 Nc3 24.Qc3 Rf5! 25.Qc4 (25.Rf5 Qg3 Deflection) 25...Kh8 26.Raf1 Raf8 27.Rf5 Qg3 28.Kh1 Qh3 29.Kg1 Qe3 (29...Qf5?? 30.Rf5 Rg8 31.Rf7+–) 30.Kg2 ½–½. Klein,Werner (1765) – Klein,Tobias (2145), remoteschach.de, 2011.

2.Nf3 d6

3.Bb2 a6 4.a4 Bg4 5.e3 Bf3 6.Qf3+= c6 7.d4 d5 8.Bd3 e6 9.c3 Be7 10.0-0 Nd7 11.Nd2 Bf6 12.Qe2 Ng8 13.f4 Ne7 14.Rf3 g6 15.h3 Nf5 16.Bf5 gf5 17.Kh1 Ke7 18.Rg1 Rg8 19.Nf1 Qf8 20.Rg3= Rg3 21.Ng3 Qh6 22.Qh5 Qh5+= 23.Nh5 Rg8 24.g4 fg4+= 25.hg4 h6 26.Rg2 Nb6 27.Nf6 Kf6 28.Kh2? Nc4 29.Bc1–/+ Ke7 30.Kh3 Nd6 31.Rc2 Nc4 32.Kh4 Rh8 33.Kh5 Kf6 34.a5= Kg7. Tragosso – sjoukje10, ChessWorld.net, 2010.

3.d4 g6 4.Nc3 Ng4 5.h3 Bg7?? 6.hg4+– Bg4 7.Rh4 Bd7 8.Bh6 Bh6 9.Rh6 e6 10.Qd2 Qe7 11.g4 Nc6 12.g5 0-0-0 13.b5 Nb8 14.Bg2 d5 15.Qe3 f6 16.Nd5! Qd6 17.Nf6 Bb5 18.Rb1 Bc6 19.Bh3 Nd7 20.Be6 Bd5 21.Bd5 Nf6 22.Bb7 Kd7 23.Ne5 Ke7 24.Ng6 Kf7 25.Nh8 Rh8 26.Rf6 Qf6 27.gf6 Re8 28.Bd5 (28...Kg6 29.Qe8 Kg5 30.Qe5 Kg6 31.Be4 Kh6 32.f7 c6 33.f8Q#) 1–0. jaskier (2245) – yaunootz (1645), internet, 2007.

2.Nf3 e5

3.Bb2 Bb4 4.Ne5= 0-0 5.e3 f6 6.Nf3 Nf7 7.Bc4 d5 8.Bb3 c6 9.0-0 Be6 10.Nd4 Bd7 11.Nc3 a6 12.Qh5 Be8?? 13.Qg4 Ne5 14.Qe2 c5?? 15.Bd5 Kh8? 16.Ne6 Qd6 17.Nf8 Bc3 18.dc3 Qd5+= 19.Ba3 b6 20.f4+/– Nc4 21.Rad1 Qf7 22.Bc1?? Kg8? 23.Rd8+– Kf8 24.Qf3 Ra7 25.Rb8 Nd6 26.Qc6 Qe7 27.Rd1 Rd7 28.Qb6 Nc4 29.Rd7 Qd7 30.Qc5 Nd6 31.Ba3 Ke7 32.Rb6 Kf7 33.Rd6 Qg4 34.Qd5 Kg6 35.h3 Qe2 36.Qd3 (36...Qd3 37.cd3+–) 1–0. yaunootz (1660) – pietshaq (1630), internet, 2007.

3.Bb2 e4 4.Ng1 =+.

3.Nc3 Bb4 4.Nd5 Bd6 5.Bb2 c6–/+ 6.Ne3 f6 7.g3 Nf7 8.Bg2 Bc7 9.c4 d5 10.cd5 cd5 11.Qb3 d4 12.Nd5 0-0 13.Nc7 Qc7 14.0-0 Nc6 15.e3 de3 16.de3 Ncd8 17.Ba3 Be6 18.Qa4 Bd7 19.Qh4 Re8 20.Rfd1 Nc6 21.Nd2 Rad8 22.Nb3 Ne7 23.Nc5 Ng6 24.Qb4= b7 Bc6 25.Nb7 Bg2 26.Nd8+/– Bh3 27.Nf7+– Qf7 28.Qe4 Be6 29.Rab1 f5 30.Qc6 f4?? 31.Rb7 Qf5 32.Qe8 Nf8 33.Rd8 (33...h6 34.Qe7 Qb1 35.Rb1 Kh8 36.Rb7 Bf7 37.Qf7 fg3 38.Qg7) 1–0. jaskier (2200) – pietshaq (1715), internet, 2007.

2.Nf3 f6

3.e4 Nc6 4.d4 e6 (4...Nb4 5.Bh6 gh6 6.c3+/–) 5.b5+/– Bb4?? (better is 5...Ne7+/–) 6.c3+– Ba5 (6...Nd4 7.Nd4 (worse is 7.cb4 Nf3 8.Qf3 Nf7+–) 7...Bf8 8.Bh6 gh6 9.Qh5 Ke7 10.Bc4+–) 7.bc6 dc6 8.Qb3 Bd7 9.Bh6 gh6 10.Qb7 Bc8 11.Qa8 a6 12.Qc6 Qd7 13.Qc5 (13.Qc5 Bb6 14.Qh5 Qf7 15.Qh6+–) 1–0. R_REZAEI (1890) – TikTakToe, Tuebingen internet, 2012.

3.e4 e6 4.a3 d5 5.Nc3 d4= 6.Na4 a6 7.Bb2 e5 8.c3 b5 9.cd4 ba4 10.de5 f5 11.ef5 Bf5 12.Bc4 Qd7 13.Nd4 Bg4 14.f3 Bh5 15.Be6 Qe7 16.Qa4 Nd7 17.0-0 Bf7? 18.Bh3 (18...a5 19.Qc6+–) 1–0. jaskier (2170) – thotares (1675), internet, 2007.

2.h3 e5

3.a3 a5 4.b5=.

3.a3 d5 4.d3 (4.d4 ed4 5.Bh6 gh6=) 4...c5 (4...Nf5 5.Nf3+=) 5.Bb2 (5.Nf3 cb4 6.Bh6 gh6 7.Ne5 d4=) 5...f6 (5...cb4 6.Be5 Nc6 7.Bb2–/+) 6.e3 (6.c3 Be6+=) 6...a6 (6...cb4 7.d4 ba3 8.Na3–/+) 7.d4 (7.bc5 Bc5 8.d4 ed4 9.ed4 Qb6=) 7...cd4 (7...ed4!? 8.Qh5 g6–/+) 8.ed4= e4 (8...Nc6 9.de5 Ne5 10.f4=) 9.Nc3 (better is 9.c4=) 9...Nc6 (9...Be6 10.Nge2=) 10.Nce2?? (10.Qh5 Nf7 11.Qd5+/– (worse is 11.Nd5 g6 12.Qe2 Qd5–/+)) 10...Bd6+= 11.Nc3 Be6 12.b5 ab5 13.Bb5 0-0 14.Nce2 Ne7 15.c3 Qb6 16.a4 Rfc8 17.Bc1 Nf7 18.Bd2 f5 19.Rb1 Qc7 20.g3 Ng6 21.h4 Ne7 22.Nf4 Bd7 23.Nh5 Bb5–+ 24.ab5 g6 25.Nf4–/+ Kg7?? 26.Ne6+– (26.Ne6 Kg8 27.Nc7 Rc7 28.Ra1+–) 1–0. RaymundG – jevaisbien, internet, 2010.

3.c3 Qf6=.

3.c3 Ng8=.

3.e4 Bb4 4.a3 (4.c3 Bc5+=) 4...Bc5–/+ 5.Ne2 (5.Nf3 Nc6–/+) 5...Nc6 (5...Qf6 6.d4 ed4 7.Bb2–+) 6.f3 (6.Nbc3 Qf6 7.d4 Nd4–/+) 6...0-0 (6...f5 7.Nbc3–+) 7.Bb2 (7.c3 d6–+) 7...d5 8.ed5 (8.ed5 Nd4 9.Qc1–+). chessdoctor79 – BRATULEANU, internet, 2010.

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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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