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TESTB790 Release 2017-01-09
Send your 1.b4 games to me, please. Thank you! /Marek
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(c) Marek Trokenheim

1.b4 c6 2.c4 Qb6

(...)

3.a3 Qa6 4.e3 Qb6 5.c5 Qc7 6.Bb2 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 b6 10.d4 Qa7 11.Bc3 Ba6 12.Ba6 Na6 13.0–0 bc5 14.bc5 Nf6 15.Nbd2 e6 16.Qa4 Be7 (16...Nd5!? 17.Ba5 Nb8+/–) 17.Ra1+– 0–0?? (better is 17...Nd5+–) 18.Qa6 Qc7 19.Ba5 Qb8 20.Bb6 Qe8 21.Ne5 Nd5 22.Nec4 (22.Qb7!? Nf6+–) 22...Nb6 23.Nb6 Bd8 (23...d6 24.Qb7 dc5 25.Ra8+–) 24.Ndc4 Bb6 25.Nb6 Qe7 (25...f6 26.Qb7+–) 26.Qb7 h5 27.h3 (27.Nd7 Rd8 28.Ra8 Kh7 29.Rd8 Qd8 30.Qc6 h4+–) 27...Kh7 (27...Rd8 28.Qc7+–) 28.Ra7 Rd8 29.Nd7 Qg5 (29...h4 30.Qc6 Kg8 31.Qb7+–) 30.Ne5 Rf8 31.Nf7 Rf7 (31...Qg6 32.f4 h4 33.Ng5 Kh6 34.Qc6+–) 32.Qf7 Kh6 (32...Qg6+–) 33.Qe6 Kh7 34.Qc6 Qf5 35.e4 (35.Qb7 Qg6 36.c6 Kh6 37.c7 Qd3 38.c8Q Qd1 39.Kh2 Qh1 40.Kh1 g6 41.Qf8 Kg5 42.Qbe7) 35...Qf4 36.g3 Qc1 37.Kg2 Qg5 38.Qd7 h4 39.Qg7! Qg7 40.Rg7 Kg7 41.c6 hg3 42.fg3 Kf7 43.c7 Ke8 If Black now would get c8Q+ in, he might survive 44.c8Q Ke7 45.Qc6 Kf7 46.d5 (46.Qd7 Kf6 47.e5 Kg6 48.g4 Kg5 49.Qc6 Kf4 50.Qf3 Kg5 51.Qf6) 46...Ke7 47.Qe6 Kd8 48.Qf7 Kc8 49.e5 (49.Qa7 Kd8 50.d6 Ke8 51.Qe7) 49...Kd8 (49...Kb8 50.d6 Ka8 51.d7 Ka7 52.d8Q Ka6 53.Qfd5 Ka7 54.Q5a8) 50.d6 Kc8 51.Qc7 1–0. Fournier,Frederic (1825) – pepetomas, Active, 2011.

3.a3 g6 4.Bb2 Nf6 5.e3 Bg7 6.b5 0–0 7.Nf3 d6 8.a4 c5 9.a5 Qd8 10.Be2 a6 11.0–0 ab5 12.cb5 Nbd7 13.a6 ba6 14.ba6 Qb6 15.Nc3 Qb2 16.Rb1 Qa3 17.Nb5 Qa5 18.Qb3 Qb6 19.d4 Ba6 20.dc5 Nc5 21.Qb4 Nd5 22.Qc4 Bb5 23.Rb5 Qc6 24.Nd4 Bd4 25.ed4 Nb6 26.Qb4 Nca4 27.Bf3 d5 28.Qb3 e6 29.Rb1 Nc4 30.Qd3 Nd6 31.R5b4 Nf5 32.h3 Qa6 33.Qb3 Rfc8 34.Ra1 Nd6 35.Raa4 Qc6 36.Ra8 Ra8 37.Rb8 Rb8 38.Qb8 Kg7 39.g4 h6 40.Kg2 1–0. avinoam – merion, kurnik, 2013.

3.Ba3 a5 4.Qa4 d6 5.b5 cb5 6.Qb5 Qc6 7.e3 Bd7 8.d4 Qb5 9.cb5 b6 10.Nf3 Nf6 11.Nbd2 e6 12.Bd3 Be7 13.0–0 0–0 14.Ne5 Re8 (14...de5 15.Nc4 Double attack (15.Be7 Pinning; 15.Be7 Deflection; 15.Nc4 Decoy)) 15.Nd7 Nbd7 16.Rfc1 Nd5 17.Be4 N7f6 18.Bf3 Rac8 19.Ne4 (better is 19.Nc4!?+/–) 19...Ne4= 20.Be4 f5 (better is 20...Nc3!? 21.Bd3 Rc7=) 21.Bd5+/– ed5 22.Rc6 Rc6 23.bc6 Rc8 24.Rc1 Kf7 25.Kf1 Ke6 26.Ke2 g5 27.Kd3 b5 28.Rc2 b4 29.Bc1 Bd8 30.Bd2 Bb6 31.Rb2?? (better is 31.f4+/–) 31...Rc6–/+ 32.Rc2 Kd7 33.Rc6 Kc6 34.Kc2 Kb5 35.a4?? (35.Kd3 a4–/+) 35...ba3 (better is 35...Ka4 36.Bc1 Kb5–+) 36.e4?? (better is 36.Kb3–+) 36...de4 37.Bg5 Bd4 38.Be3 (38.Kb3 a4 39.Ka3 Bf2 40.Kb2–+) 38...Be3 39.fe3 Kc4 40.h3 a2 41.Kb2 Kd3 42.Ka2 Ke3 43.g4 fg4 44.hg4 Kd2 (44...Kd2 45.g5 e3–+) 0–1. popovicigelu – badej, kurnik, 2012.

3.Qb3 d5 4.c5 Qc7 5.Bb2 e5 6.Qg3 Nd7 (6...f6 7.Nf3 Ne7 8.Qh4=+) 7.d4 f6 8.Nf3 Qd8 (8...a5 9.ba5 Ne7 10.e3=) 9.de5+= b6 10.ef6 Ngf6 11.Nd4 Ne4 12.Qe3 (12.Qf3 bc5 13.Nc6 Qg5+=) 12...bc5= 13.bc5 (13.Ne6 Qb6 14.Ng7 Kf7 15.Qf3 Ndf6 16.Bf6 Nf6=+) 13...Ne5 (13...Bc5 14.Nc3 Qa5 15.Kd1–/+) 14.Qf4 (better is 14.Nd2!? Ng4 15.Qf4 Ngf2 16.Nc6=) 14...Ng6 (14...Qc7 15.e3 g5 16.Nb5 Qa5 17.Bc3 gf4 18.Ba5 cb5 19.Bc3–+) 15.Qe3 ½–½. Valenta,Vit – Jordan,J (2000), Morava–ch U20, 1992.

3.Qb3 e5 4.c5 Qc7 5.Bb2 d5 6.Qg3 f6 7.d4 Na6 8.a3 (worse is 8.de5 Nb4 9.Kd1 A) worse is 9...Bc5 10.ef6 Qg3 11.fg7 (11.fg3? Nf6 12.a3 Ne4 13.ab4 Bb4–+) 11...Qg7 12.Bg7+/–; B) 9...Bf5–/+) 8...ed4 9.Bd4 Nh6 10.Qc7 Nc7 11.Nf3 Ne6 12.Bb2 b6 13.cb6 ab6 14.e3 Bd6 15.Be2 Kf7 16.0–0 Ba6 17.Ba6 Ra6 18.Nbd2 Rha8 19.e4 de4 20.Ne4 Be7 21.Rad1 c5 22.Nd6 Bd6 23.Rd6 Nf5 24.Rd5 Ne7 25.Rd6 Nf5 26.Rd5 ½–½. Colomer Camarasa,Jordi (1925) – Lopez Pajuelo,Aleix (1720), Llinars del Valles ESP, 6th Open, 2012.

3.b5 e6 4.e3 Nf6 5.Nc3 a6 6.a4 Bb4 7.Bb2 0–0 8.Nf3 ab5 9.cb5 (9.ab5 Ra1 10.Qa1 d5=) 9...d5+= 10.Qb3 c5 11.Ba3 Ba3 12.Ra3 Nbd7 13.Be2 c4 14.Qb2 Nc5 15.0–0 Bd7 16.Ne5 Ra5 (16...Qd6 17.d4 cd3 18.Nd3 Nd3 19.Bd3+=) 17.Nd7 (better is 17.Bc4 Rfa8 18.Qb4+/–) 17...Nfd7–/+ 18.Rfa1 Rfa8 19.f4 Nb3 20.R1a2 Ndc5 21.Qc2 Qa7 22.d3? (better is 22.f5+=) 22...cd3–+ 23.Bd3 Nd3 (23...Nd3 24.Qd3 Nc1–+) 0–1. Fournier,Frederic – Caron_Britene,Christian, Train France (FRA), 2000.

3.Nc3 Qb4 4.Rb1 (4.e4!?=+) 4...Qc4–/+ 5.e4 Qe6 6.Nf3 d6 7.Ng5 Qg6 8.d4 h6 9.Nf3 Nf6 10.Qe2 (better is 10.Qc2–/+) 10...Ne4?? (better is 10...Nbd7–/+) 11.Ne4+/– (< 11.Qe4 Bf5 12.Qe2 Bb1–/+) 11...d5 12.Nc3 Nd7 13.Qd1 Nb6 14.Bd3 Qd6 15.0–0 Bg4 16.h3 Bf3 17.Qf3 e6 18.Bf4 Qd7 19.Qg4 f5 20.Qh5 Qf7 21.Qf7 Kf7 22.Bc7 Be7 23.Bb6+/– ab6 24.Rb6 Ra7 25.a4 Bd8 26.Rb3 Ba5 27.Bc2 Rc8 28.Rfb1 Rc7 29.Ne2 b6 30.g4 fg4 31.hg4 g5 32.Rh3+– Kg7 33.Kg2 Ra8 34.Rbh1 Rh8 35.Ng3 c5+/– 36.Nh5 Kf7 37.Rf3 Ke7+= 38.Bg6. alexp (2390) – blackpanther (2410), net–chess.com, 2004.

3.e3 Qb4 4.Nf3 (4.a3 Qa5=+) 4...g6 (4...d6 5.Nc3=+) 5.a3 Qb6 (5...Qa5 6.Bb2 Nf6 7.Bc3=) 6.Qc2 (6.d4 d5=) 6...Bg7=+ 7.Nc3 e6 (7...d6 8.Rb1 Qc7 9.Be2=+) 8.Rb1 (8.Bb2 f6=) 8...Qc7 (8...Qd8 9.c5=) 9.Be2 (9.Bb2 e5=) 9...Ne7 (9...d6 10.d4=) 10.0–0 (10.Bb2 0–0=) 10...0–0 11.d4 (11.c5 b6 12.d4 Ba6=) 11...d5 (11...d6 12.Rd1=) 12.c5 (12.Rd1 b6=) 12...Nd7 (12...b6 13.Na4 Nd7 14.Rd1=+) 13.Nd2 (13.e4!?=+) 13...e5–/+ 14.f3? (better is 14.Nf3–/+) 14...ed4–+ 15.ed4 (15.Nd1–+) 15...Bd4 16.Kh1 Bc5 (16...Nc5 17.g4–+) 17.Na4 (17.f4 Qd6–+) 17...Bd6 18.Bb2 (18.g3 Ne5 19.Nc5 Bf5–+) 18...Bh2 19.Bd4 (19.Rfd1 Bd6–+) 19...Nf5 (20.Nb3 Qf4–+) 0–1. gtate (2060) – bigal (2100), net–chess.com, 2006.

3.g3 Qb4 4.e3 –/+.

3.g3 d6 4.Nc3 (4.a3 a5 5.Qa4 Nd7=+) 4...Nf6 (4...Qb4 5.e4–/+) 5.e3 (5.a3 e5=+) 5...a5 (better is 5...Qb4!? 6.Rb1 Qa5–/+) 6.b5= g6 (6...e5 7.d4=) 7.Rb1 Qd8 (7...Bg7 8.Bg2 c5 9.Bb2=) 8.Nf3 (8.Bg2 Bg7=) 8...Bg7 9.d4 d5 (9...0–0 10.bc6 bc6 11.Bg2=) 10.c5 0–0 11.b6 (11.Bd3 cb5 12.Rb5 Nc6=) 11...Nbd7 (11...Bf5 12.Bd3=) 12.Bd3 (12.Bb2 Re8=) 12...e5 13.Be2 (13.Ne5 Ne5 14.de5 Nd7=) 13...e4 (13...ed4 14.ed4 Ne4 15.Na4=+) 14.Nd2= Ne8 15.f4 (15.0–0 Qg5=) 15...ef3 16.Bf3 (better is 16.Nf3!? Ndf6 17.Qc2=) 16...Nc5!–/+ 17.dc5 (17.0–0 Bf5 18.Ba3 Bb1 19.Qb1 Nd7–/+) 17...Bc3 ½–½. Ackermann,Robert – Schraufl,Wolfhardt, Mittelfranken–ch NT, 1999.

3.a3 e5

4.c5 Qc7 5.Bb2 d6 6.d4 Nd7 7.Nf3 e4 8.Nfd2 d5 9.e3 Ngf6 10.Be2 g6 11.0–0 Bh6 12.Nc3 White prepares b5 12...0–0 13.b5 Re8 14.a4 a5 15.b6 Qd8 16.Bg4?? (16.Rb1 Bg7+=) 16...Bg7?? (better is 16...Ng4 17.Qg4 Nc5–+) 17.Bh3+= h5 18.Ne2 Bh6 19.Ng3 Nf8 20.Qe1 (better is 20.Bc8 Qc8 21.Ne2+=) 20...Bh3–/+ 21.gh3 Qd7 22.Kg2 h4 23.Ne2 N8h7 24.Nf4 (better is 24.f4!? ef3 25.Nf3+=) 24...Bf4–+ 25.ef4 Qf5 26.Qe3 Nh5 27.f3? (27.Kh1 N7f6–/+) 27...Nf4 (better is 27...Qf4 28.Qf4 Nf4 29.Kh1 e3–+) 28.Kh1 ef3 29.Qf3 Re2 (29...g5–+) 30.Bc1? (better is 30.Qe2! Ne2 31.Rf5 gf5 32.Nf3=) 30...Qh3–+ 31.Rf2?? (better is 31.Qh3 Nh3 32.Ra3 Nf2 33.Kg1–+) 31...Rf2 32.Qf2 Nh5 (better is 32...Re8 33.Ne4 Nd3–+) 33.Nf3 (33.Ra3 Qg4–/+) 33...Qf5 (33...Ng3!? 34.Kg1 Ne4 35.Qf1 Qf1 36.Kf1–+) 34.Be3 N7f6 35.Ne5 Qf2 36.Bf2 g5 37.Be3 Ne4 38.Rg1 f6 39.Ng6? (39.Ng4–+) 39...Kf7 40.Bg5 Ng5 41.Nh4 Re8 (better is 41...Ng7!? 42.Rg4–+) 42.Nf5 Re2 (42...Ne4!? 43.Rf1–+) 43.Nd6 Ke6 (better is 43...Kf8 44.Rf1 Re7–+) 44.Nb7?? (44.Rf1 Ra2 45.Nb7 Ra4 46.Rb1–+) 44...Nf3 45.Nd8 Kd7 46.Rg7 Kd8 47.Rg8 Ke7 48.Rg7 Ng7 49.b7 Rh2 0–1. avinoam – sobtkija (1835), playok.com, 2013.

4.Nf3 e4 5.c5 Qc7 6.Nd4 g6 (better is 6...d6!? 7.Qc2 Nf6+=) 7.Bb2+/– Qe5? (better is 7...Nf6!?+/–) 8.Qc2 Bg7 9.Ra2 (9.Ra2 Qd5 10.Nc3+–) 1–0. Fournier,Frederic (2315) – pekefritz (1785), Active, 2008.

3.Qb3 d6

4.a4 Nf6 5.Bb2 e5 6.e3 c5 7.b5 a5 8.d4 ed4 (8...cd4 9.ed4 Nc6 10.Nf3 Nd4 11.Nd4 ed4 12.Qd3=) 9.ed4 Be7 10.d5 0–0 11.Be2 Bf5 12.Nf3 Nbd7 13.0–0 h6 (13...Rae8 14.Bd3 Ne4 15.Qc2+=) 14.Bd3+= Bd3 15.Qd3 Qd8 16.Nbd2 Re8 17.Rae1 Nh7 18.Qf5 Bf6 19.Bf6 (19.Re8 Qe8 20.Re1 Qd8+/–) 19...Ndf6 (19...Nhf6 20.Re8 Qe8 21.Qf4+=) 20.h3 (better is 20.Re8 Ne8 21.Re1+/–) 20...Qd7? (better is 20...Qc7!?+=) 21.Qd7+– Nd7 22.Re8?? (better is 22.Ne4 Re4 23.Re4+–) 22...Re8+= 23.Re1 Re1 24.Ne1 f5 25.g4 (25.Nd3 Nhf6+=) 25...fg4 (25...Nb6 26.Nc2 Ng5 27.Kg2+=) 26.hg4= Nhf6 27.f3 (27.Nb3 b6 28.f3 Ne5=) 27...Ne5 (27...Nb6!?–/+) 28.Kf2 (28.Ng2 Kf7+=) 28...Kf7 (better is 28...Nfd7 29.Ng2 Nb6+=) 29.Ne4?? (29.Ke2!?=) 29...Ke7 (better is 29...Ne4 30.fe4 Ng4 31.Ke2 Ne5–+) 30.Nd2+= g5 (30...Nfd7 31.Ng2+=) 31.Nc2 (31.Ke3 Nfd7 32.Nd3 Nd3 33.Kd3 Ne5 34.Ke4 b6=) 31...h5 (31...Nfd7 32.Ne3 Nb6 33.Kg3+=) 32.Ne3 (32.gh5 Nh5 33.Ne3 Nd3 34.Ke2 Nhf4 35.Kd1 Nf2 36.Kc2 b6+=) 32...h4 33.Nf5 Kd7 34.Ke3 Neg4?? (better is 34...Ng6+=) 35.fg4+– Ng4 36.Kf3 Ne5 37.Kg2 b6 (37...Kc7 38.Kh3+–) 38.Kh3 Nd3 39.Ne4 Nb2? (39...Ne5 40.Nf6 Kd8 41.Nd6+–) 40.Ng5 (better is 40.Nfd6!? Ke7+–) 40...Nc4 (40...Na4 41.Ne4+– (41.Nh4?! Nb2+=)) 41.Ne4 Nb2 42.Nc3 Nd3 43.Kh4 Ne5 44.Kg5 Nf3 45.Kf4 Nd2 (45...Ne5 46.Ne4 Nf7 47.Nf6 Kd8 48.Ng4+–) 46.Ke3 (better is 46.Ne3 Kc7+–) 46...Nc4 47.Kd3 Ne5 48.Kc2 Ng4 (48...Nf7 49.Ne4+–) 49.Kb3 (better is 49.Ne4!? Kc7+–) 49...Ne5 50.Ne4 Nf7 51.Kc4 Kc7 52.Ne7 Kd7 53.Nc6 Kc7 54.Nf6 Ne5 (54...Nh6 55.Kd3 Nf5 56.Ke4 Ng3 57.Ke3 Nf5 58.Kf3 Nh4 59.Kg4+–) 55.Kc3 (better is 55.Ne5 de5 56.Ne4+–) 55...Nc6 (55...Ng6+–) 56.dc6 (better is 56.bc6 Kd8 57.Ne4 Kc7 58.Nd6 Kd6+–) 56...Kd8 (56...Kb8 57.Kc4 Ka7 58.Kd5 Kb8 59.Kd6 Ka7 60.c7 Kb7 61.Kd7 Ka8 62.c8Q Ka7 63.Kc7 c4 64.Qb7#) 57.Nd5 Kc8 58.Kd3 (58.Nb6 Kb8 59.Nd5 Ka7 60.b6 Kb8 61.Ne7 c4 62.c7 Kb7 63.c8Q Kb6 64.Nd5 Ka7 65.Qc7 Ka6 66.Qb6#) 58...Kd8 59.Ke4 1–0. popovicigelu – polams (1630), kurnik, 2012.

4.Bb2 f6 5.d4 d5 6.c5 Qc7 7.Nf3 b6 8.cb6 ab6 9.b5 Ra5 10.Nc3 Bd7 11.bc6 Bc6 12.Rc1 Qd6 13.Qb6 Ra6 14.Qb3 Qd7 15.Qb8 Kf7 16.e4 Ra8 17.Qf4 g5 18.Ne5 Ke8 19.Nd7 Kd7 20.Qg4 Ke8 21.Qe6 Bd7 22.Bb5 Ra7 23.Nd5 Rb7 24.Rc8# 1–0. Machete99 – guest1303, ICC, 2002.

4.e3 e5+= 5.Nf3 Na6 6.a3 Bf5 (6...Nf6 7.d4 e4 8.Ng5=) 7.d4 e4 8.Nfd2 (8.Qc2 Nf6+=) 8...Qc7 (8...Nf6 9.Nc3=) 9.Nc3+= Nf6 10.Qc2 Will e4 fall? 10...d5 11.cd5 (11.Qa4 Bd7+=) 11...cd5= 12.Qb3 (12.Bb2 Rc8=) 12...Qd6 13.Bb5 (13.Bb2 Nc7=) 13...Bd7 14.0–0 (14.Bd7 Qd7 15.Bb2 Be7=) 14...Be7 (14...Bb5 15.Nb5 Qd7 16.Nc3=) 15.Bd7 (15.Ba6 ba6 16.f3 ef3 17.Nf3 Rc8=) 15...Qd7 16.Bb2 0–0 17.Rac1 (17.f3 ef3 18.Nf3 Rae8=) 17...Rac8 (17...Nc7 18.Rc2=) 18.Rc2 (18.b5 Nc7=) 18...Nc7 (18...b5 19.f3 ef3 20.Rf3=) 19.Rfc1 (19.Qa4 Nb5 20.Rfc1 Nc3 21.Qd7 Nd7 22.Rc3 Rc3 23.Rc3 Bd6=) 19...Ne6 (19...Bd6 20.Qa4 b5 A) 21.Qa7? Ra8 22.Qb6 Rfb8 23.Nd5 Ncd5–+ (23...Rb6 24.Nb6 Qd8 25.Na8 Qa8 26.Rc7 Bc7 27.Rc7+/–; 23...Nfd5?! 24.Qc6 Qe6 25.Ne4 Bh2 26.Kh2 Qe4 27.Qd6–+); B) 21.Qa5=) 20.f3 (20.b5 Rc7=) 20...ef3 21.Nf3 Rc7 22.Ne5 Qd8 23.Nb5 (23.a4 Re8=) 23...Rc2 24.Rc2 (24.Qc2 Qb6 25.Qa4 a6=) 24...a6+= 25.Nc3 Bd6 26.Rd2 (26.Nd3 Ng4 27.Nd5 Bh2 (worse is 27...Nh2 28.e4+=) 28.Kf1 Qd5 29.Qd5 Ne3 30.Kf2 Nd5–+) 26...Nc7 27.Re2 Re8 (27...Ne4 28.Qc2 Nc3 29.Qc3+=) 28.e4= de4?? (better is 28...Be5 29.de5 Ne4 (worse is 29...Re5 30.Nd5 Rd5 31.ed5+/–) 30.Nd5 Qd5 31.Qd5 Nd5 32.Re4 Rc8=) 29.Nf7+– (29.Nf7 Bh2 30.Kh2+–; 29.Qf7?! Kh8 30.h3 Re7=) 1–0. Pandit – Sutton, email 4AMM–09, 1997.

4.e3 Nf6 5.a4 a5 6.b5 Nbd7 7.Nf3 g6 8.Bb2 Bg7 9.Be2 0–0 10.0–0 Nc5 11.Qc2 Bf5 12.Qd1 Nd3 13.Bc3 cb5 14.Qb3 b4 15.Bf6 Bf6 16.Nc3 Nc5 17.Nd5 Nb3 18.Nb6 Na1 19.Na8 Ra8 20.d4 Nc2 21.Nd2 Nd4 22.ed4 Bd4 23.Nb3 Bc5 24.Bf3 Ra7 25.Rd1 Bc2 26.Nc5 Bd1 27.Bd1 dc5 28.f4 b6 29.Kf2 Rd7 30.Bf3 Rd4 31.Be2 Rf4 32.Ke3 Rd4 33.Bd3 e6 34.g3 Kf8 35.h3 Ke7 36.g4 Kf6 37.Be2 Kg5 38.Kf3 Kh4 39.Kg2 Rd2 40.Kf3 Re2 41.Ke2 Kh3 42.Kd3 Kg4 43.Ke4 h6 44.Ke5 h5 45.Kd6 h4 46.Kc6 b3 47.Kb6 b2 48.Ka5 b1Q 49.Ka6 h3 50.a5 h2 51.Ka7 h1Q 52.a6 Qhc1 53.Ka8 Qcb2 54.Ka7 Qb8 0–1. ateistawolnyx – bilbog (1665), kurnik, 2013.

4.Nf3 e5 5.d3 Nf6 6.Be3 (6.Be3 Qc7 7.Bg5=). Yeung,Chun Keung (1740) – Akman,Ozgur, WSTT/3/06/1 – Sokolsky Opening, A00, 2006.

3.b5 cb5!?

4.cb5 Qb5 +=.

4.e3 bc4 5.Bc4 Nf6 6.Nf3 d5 7.Bb3 Nc6 8.0–0 e6 9.Bb2 Be7 10.Nc3 0–0 11.Ne5 Ne5 12.Nd5 Nd5 13.Be5 Bf6 14.d4 Be5 15.de5 Ne7 16.Qg4 Ng6 17.Qh5 Bd7 18.Rfd1 Rfd8 19.Rab1 Qa5 20.f4 Bc6 21.Rdc1 Qd2 22.Qf3 Bf3 23.gf3 Qe3 24.Kg2 Qe2 25.Kg3 Rd3 26.Bd1 Rf3 27.Kg4 Qg2 28.Kh5 Rh3 0–1. dtpwaldi – antoni64, kurnik, 2013.

3.a3 a5

4.Qa4 e5 5.Bb2 d6 6.Nf3 Na6 7.e3 Nc5 8.Qc2 (8.bc5 Qb2 9.Bd3 Qa1–+) 8...ab4 9.ab4 Ra1 10.bc5 Rb1 11.Qb1 Qc5 12.Be2 Qa5 13.Bc3 Qc7 14.0–0 f5 15.d4 e4 16.Ng5 Be7 17.Nh3 Nf6 18.Qb3 0–0 (18...d5 19.c5+=) 19.Ra1= d5 20.Nf4 Bd6 21.cd5 Nd5 22.Nd5 cd5 23.Qd5 ½–½. Bendig,Frank (2365) – Klawitter,Rolf (2110), RSM2007 remoteschach.de, 2008.

4.ba5 Qd4 5.Nc3 Qc4 6.Na4 Ra5 7.Nb6 =.

4.Bb2 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4).

4.ba5 Qa5

5.Bb2 d6 6.Nf3 Nf6 7.g3 e5 8.Bg2 Be6 9.Qc2 Be7 10.0–0 0–0 11.d3 Nbd7 12.Nbd2 Nc5 13.Bc3 Qa4 14.Qb2 Qa7 15.Bb4 Na4 16.Qc2 c5 17.Bc3 Rfe8 18.Ng5 Nc3 19.Qc3 Bd7 20.Nge4 Ne4 21.Ne4 f5 22.Nd2 Kh8 23.Rfb1 The backward pawn on b7 becomes a target 23...e4 24.Ra2 (24.de4 Bf6 Combination) 24...Bf6 25.Qc1 Bc6 26.de4 fe4 27.e3 Qa4 28.h4 Kg8 29.Rb6 Re6 30.Qb1 e4 draws heavy fire 30...Rae8 31.Qb3 Qb3 32.Rb3 d5 33.Rb1 d4 34.Nb3 b6 35.a4 Ra8 36.a5 Ra6 37.ed4 cd4 38.c5 b5 39.Rd2 d3 40.Rdd1 Re7 41.Kf1 b4 0–1. pdchessvamp – PeterRs, ChessWorld.net, 2012.

5.e3 Nf6 6.Bb2 d5 7.Bf6 ef6 8.a4 Be6 9.cd5 Bd5 10.Nc3 Be6 11.Nf3 Bc5 12.Be2 0–0 13.0–0 Na6 14.Ne4 Bb4 15.d4 Rfd8 16.Qc1 h6 17.h3 Bd5 18.Ng3 g6 19.Qb1 Kg7 20.Rc1 Bd6 21.Nf1 Nb4 22.N1d2 f5 23.Nc4 Bc4 24.Rc4 b5 25.Rc1 ba4 26.Qb2 a3 27.Qc3 f6 28.Bc4 Nd5 29.Bd5 cd5 30.Qa5 Ra5 31.Ra2 Rb8 32.Rcc2 Rb1 0–1. tyop (1745) – mabeji, kurnik, 2013.

4.ba5 Ra5

5.Qc2 d5 6.e3 e5 7.cd5 Rd5 8.Nc3 (8.Bc4 Qc5=) 8...Rd8 (8...Ra5 9.Bc4=) 9.Nf3 Bd6 (9...Qa5 10.Bc4=) 10.Ne4+= Qc7 (10...Bc7 11.Bb2 f6 12.Bc4+=) 11.Bb2 Nd7 12.d4 ed4 13.Nd4 (13.Nd6 Qd6 14.Nd4+=) 13...Ngf6 (13...Be5 14.f4 Bd4 15.Bd4+=) 14.Nf5 (14.Nd6 Qd6 15.Nf5 Qf8+/–) 14...Bf8 (14...Be5 15.Be5 (15.Ng7? Kf8–+) 15...Qe5 16.Ned6 (16.Ng7? Kf8 17.Ne6 Qe6–+) 16...Kf8 17.Rc1=) 15.Nd4 (15.Rd1!?+/–) 15...Nd5 (15...Ne4 16.Qe4 Be7 17.Nf5=) 16.Bc4 N7b6 (16...Ne5 17.Bd5 Rd5 18.0–0=) 17.0–0 (17.Bb3 f5 18.Ng3 f4 19.ef4 Qf4+/–) 17...Nc4= 18.Qc4 Bd6 (18...Be7 19.Rab1=) 19.Nd6 Qd6 20.Rfd1 Qc7 (20...Qg6 21.Qc2=) 21.h3 (21.e4 Nf4+=) 21...0–0= 22.Rd2 Qe7 23.Rad1 h6 (23...Rfe8 24.a4=) 24.Nf3 (24.a4 Qe4+=) 24...Be6 (24...Rfe8 25.a4+=) 25.Qd4 (25.Qc2 Rfe8+=) 25...f6 (25...f5 26.Ne5 Rfe8 27.Qd3+=) 26.e4= Nc7 (26...c5 27.Qd3 c4 28.Qc2= (worse is 28.Qc4 Ne3 29.Qe2 Nd1 30.Qd1 f5–/+)) 27.Qb6 (27.Qd8 Rd8 28.Rd8 Kf7+=) 27...Rd2= 28.Rd2 Na8 29.Qa7 (29.Qe3 c5=) 29...Qc7 (29...Bf7 30.Bd4 Qe4 31.Qb7=) 30.Nd4+= Bd7 (30...Bf7 31.Nf5+=) 31.Nb3 Qb6 (31...Be6 32.Nc5 b6 33.Qc7 Nc7 34.Ne6 Ne6 35.Rd6+/–) 32.Qb6 Nb6 33.Nc5 (33.Rd4 Bc8+=) 33...Bc8 34.Rd4 Na8 35.f3 (35.Ra4 Nc7=) 35...b6= 36.Na4 (36.Nd7 Rf7 37.Nb8 c5=) 36...Ba6 (36...Kf7 37.Nc3=) 37.Rd6+= Rc8 (better is 37...Bc4!?+=) 38.Bd4+/– c5 (38...Bc4 39.Nb6 (worse is 39.Bb6 Bb5–/+) 39...Nb6 40.Bb6+/–) 39.Bc5!+– bc5 Exploits the pin (39...Rc5 40.Nc5) 40.Ra6 c4 41.Kf2 Kf7 (41...h5 42.Nc3+–) 42.Ke2 (42.Nc3 Kf8+–) 42...Ke7 (42...h5 43.Nc3+–) 43.Ke1 (43.Nc3 Kf8+–) 43...Kd8 (43...Kf7+–) 44.Nb6 (better is 44.Ra7!? g5 45.Rf7+–) 44...Nb6+/– 45.Rb6 Ra8 46.Rb4 Ra3 47.Rc4 Ra2 (47...Ra1 48.Kf2+/–) 48.Kf1 (48.Rd4 Ke7 49.Rd2 Ra1 50.Kf2 Ke6+/–) 48...Kd7 (48...h5 49.h4+/–) 49.Rd4 (49.Kg1 h5+/–) 49...Ke7 (49...Ke6 50.Rd8+/–) 50.Rd5 (50.Rb4 Kf7+/–) 50...Kf7 (better is 50...Ke6+/–) 51.e5 (better is 51.Rd7 Kg6 52.Kg1+/–) 51...Ke6= 52.Rd6 Ke5 53.Rd7 g6 (53...g5 54.Rh7=) 54.Rg7 (54.Re7 Kf4 55.Re4 Kg5=) 54...Kf5 (54...g5 55.Rh7=) 55.g4 Kg5 56.Rg8 (56.f4 Kh4 57.Rg6 Kh3=) ½–½. Sieradzka,Anna – Jackowska,Aleksandra, Poland–ch U14 Girls, 1998.

5.Qc2 e5 6.Nf3 =.

5.d4 d6 =.

5.e3 e6 6.Nf3 d5 7.Qc2 Nf6 8.Bb2 Be7 9.cd5 ed5 10.Bc3 Ra8 11.Be2 0–0 12.d3 Na6 13.0–0 Bf5 14.Nbd2 Qc7 15.Nh4 Be6 16.g3 Nc5 17.Nhf3 Na4 18.Be5 Qa5 19.Nb3 Qd8 20.Rfc1 Nd7 21.Bd4 c5 22.Bb2 Nb2 23.Qb2 Bf6 24.d4 c4 25.Nbd2 b6 26.e4 Nc5 27.ed5 Bd5 28.Bc4 Bc4 29.Nc4 Nd3 30.Qb6 Nc1 31.Qd8 Ne2 32.Kf1 Ng3 33.hg3 Rfd8 34.Nce5 Rd4 35.Rb1 Be5 36.Ne5 Rda4 37.Rb7 f6 38.Nc6 Ra3 39.Ne7 Kh8 40.Nf5 g6 41.Nh6 R3a7 42.Rb2 Kg7 43.Ng4 h5 44.Ne3 Ra1 45.Kg2 R8a7 46.Nd5 R1a2 47.Rb6 R7a6 48.Rb7 Kh6 49.Rb3 Rd2 50.Ne7 Raa2 51.Rf3 f5 52.Nc6 Rac2 53.Ne5 Kg5 54.Rf4 Rc5 55.Nf3 1–0. gutes (1620) – kan55, kurnik, 2014.

4.c5 Qa7

5.Bb2 b6 6.Qc2 e6 (6...Na6 7.d4=) 7.Nf3+= Nf6 8.d4 d5 9.Nbd2 Nbd7 10.g3 (10.e3 Be7=) 10...Be7 (10...Qb7 11.e4=) 11.Bg2 Ba6 12.0–0 (12.cb6!? Qb6 13.ba5=) 12...Be2=+ 13.Rfe1 Qa6?? (13...Bb5 14.a4 Ba6 15.Ne5=+) 14.cb6?? (14.Re2 Qe2 15.Bf1 Qf1 16.Rf1 ab4 17.ab4 bc5 18.dc5 0–0+–) 14...Rc8?? (better is 14...Bf3 15.Nf3 Qb6 16.ba5 Ra5=+) 15.Re2!+– Qb6 (15...Qe2 16.Bf1) 16.ba5 Qa5 17.Ne5 c5 (17...Ne5 18.de5 Nd7 19.Nb3+–) 18.Nd7 Kd7 19.dc5 Rc5 20.Qd1 Rb5 (20...Rcc8 21.Nb3 Qa6 22.Nd4+–) 21.Nc4 Qa8 22.Ne5 Ke8 23.Rc1 (23.a4 Rc5+–) 23...Qb8 (23...Rc5+–) 24.Qa4 Bd6 25.Nc6 Qb7 26.Nd4 (26...Qd7 27.Nb5+–) 1–0. Margraf,A – Walkhoefer,Wolfgang, corr SOK–90–50, 1989.

5.Bb2 Nf6 6.e3 b6 7.d4 g6 (7...Qb7!?=) 8.Nd2 Bg7 9.Nc4 bc5 10.dc5 (10.Na5?! cb4 11.ab4 Ba6=) 10...Ba6 (10...Qb7 11.ba5 (< 11.Na5 Ra5 12.Bc4 Ra8–/+) 11...Qa7 12.Nf3+=) 11.Na5+/– Bf1 12.Kf1 0–0 13.Nf3 Qc7 (13...d6 14.cd6 ed6 15.Rc1+/–) 14.Nc4 Nd5 15.Bg7 Kg7 16.e4 Nf4 17.g3 Nh5 18.Kg2 Nf6 19.Qd4 Kg8 20.Rhd1 Na6 (20...Ra7 21.a4+–) 21.Ne3 (21.Nb6 Ra7+–) 21...Rae8? (better is 21...Rfd8+–) 22.e5 Nh5 (22...Nd5 23.Nd5 cd5 24.Qd5+–) 23.Qd7 Qb8 (23...Rc8+–) 24.Qc6 Nc7 25.Rd7 Ne6 26.Nd5 Kg7 27.Qb7 Kh6 (27...Rd8 28.Qb8 Rd7 29.Qb6 Rd5 30.Qb7+–) 28.Qb8 Rb8 29.Ne7 f5 (29...Rfd8 30.Rd6+–) 30.c6 Nhg7 31.c7 Nc7 32.Rc7 Rfd8 (32...Ne6 33.Rc6 Nd8 34.Rd6+–) 33.Nc6 (33...Rdc8 34.Rc8 Rc8 35.b5+–) 1–0. Springer,U – Walkhoefer, corr SOK–89–50, 1989.

5.Qb3 Nf6 6.d4 ab4 7.Qb4 Na6 8.Qc3 Nd5 9.Qd2 g6 10.e4 Nf6 11.Bd3 Bg7 12.Ne2 0–0 13.0–0 b6 14.Ba6 Ba6 15.Nbc3 bc5 16.dc5 Qc5 17.Bb2 Rfb8 18.Na4 Qb5 19.Qc2 Qe2 20.Qe2 Be2 21.Rfe1 Bb5 22.Nc3 Bd3 23.f3 Rb2 24.Re3 Bc4 25.e5 Nd5 26.Nd5 Bd5 27.e6 Be6 28.Rd1 d6 0–1. akrycz – arcydziengiel, kurnik, 2013.

4.c5 Qc7

5.ba5 Qa5 6.Bb2 Qc5 7.Nc3 d5 8.e3 e5 9.Nf3 Bd6 10.Be2 Nf6 11.0–0 0–0 12.d4 ed4 13.Nd4 Be5 14.Rc1 Qe7 15.h3 Na6 16.Na4 Bd7 17.Nb6 Rad8 18.Nd7 Rd7 19.Nf5 Qe6 20.Be5 Qe5 21.Ba6 Qf5 22.Bd3 Qe6 23.Qc2 g6 24.Rb1 Rfd8 25.a4 Ne4 26.Be4 de4 27.Rfd1 Rd1 28.Rd1 Rd1 29.Qd1 Qd5 30.Qb1 b5 31.a5 Qd8 32.Qa2 Qa8 33.a6 Qa7 34.Qa5 b4 35.Qd8 Kg7 36.Qd4 Qd4 37.ed4 b3 38.a7 b2 39.a8Q b1Q 40.Kh2 Qb5 41.Qd8 Qd5 42.Qc7 Qd4 43.Qc6 h5 44.Kg3 Qd3 45.Kf4 f6 46.Qc7 Kh6 0–1. besi01 – sadok (1730), kurnik, 2013.

5.Bb2 Na6 6.e3 ab4 7.ab4 b6 8.d4 d6 9.b5 cb5 10.Bb5 Kd8 11.cd6 Qd6 12.Nf3 Qb4 13.Nc3 Qb2 14.Rc1 Nc7 15.Bc4 Ra3 16.Nb1 Qb4 17.Nfd2 Ra1 18.0–0 e6 19.Bd3 Ba6 20.Qc2 Bd6 21.Ba6 Ra6 22.g3 Nf6 23.Nc4 Kd7 24.Ne5 Ke8 25.Qc6 Ke7 26.Qc7 Bc7 27.Nc6 Kd6 28.Nb4 Ra1 29.Nc3 Rc1 30.Rc1 Rc8 31.e4 Kd7 32.e5 Ne8 33.Nb5 Ra8 0–1. emeryt85 – darek10, kurnik, 2014.

5.Bb2 Na6 6.e3 d6 7.Ba6 Ra6 8.Nc3 dc5 9.bc5 e6 10.Ne4 f5 11.Nd6 Bd6 12.cd6 Qd7 (12...Qd6?? 13.Bg7 e5 14.Bh8+–) 13.Qh5 Kf8 14.Be5 Rb6 (14...Nf6 15.Qh4 Ne4 16.Nf3+=) 15.Ne2 Rb5 16.f4 c5 17.0–0 b6 18.Nc3 Rb3 19.a4 (19.Rfb1 a4+–) 19...Ba6 20.Rfb1 Rb4 21.Rb4 (21.Na2 Rb1 22.Rb1 A) 22...Qa4?? 23.Qg5 (23.Rb6?! Bc8 24.Rb8 Qd7+–) 23...Nf6 24.Bf6+–; B) 22...Qd8+–) 21...cb4 (21...ab4 22.Nb5 Nf6 23.Bf6 gf6 24.Qh6 Kf7 25.d4=) 22.Nd1 (better is 22.Rc1!? Nf6 23.Bf6 bc3 24.Rc3 gf6 25.Rc7 Qc7 26.dc7+–) 22...Nf6= 23.Bf6 gf6 24.Nf2 Qd6 25.Qh6 Kf7 26.e4? (26.d4!?+=) 26...Qd4 (26...fe4 27.Rc1–+) 27.Qh5 (27.Rc1!? fe4 28.Rc7 Ke8 29.h3–+) 27...Kg7 (better is 27...Ke7!? 28.Rb1 fe4–+) 28.Rc1 (28.Rc1 Rc8 29.Rd1–/+). avinoam – 8591gustaw, kurnik, 2012.

5.Bb2 ab4 6.ab4 Ra1 7.Ba1 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1).

5.Bb2 ab4 6.e3 b5 (6...ba3 7.Na3 Ra5 8.d4+=) 7.cb6 (7.ab4 Ra1 8.Ba1 d6=) 7...Qb6+= 8.Qb3 e6 9.d4 (9.Nf3 Nf6+=) 9...Qb7 (9...Ba6 10.Nf3–/+) 10.Nd2? (better is 10.a4+=) 10...ba3–+ (10...ba3 11.Bc1 Qb3 12.Nb3 Bb4 13.Bd2 Be7–+) 0–1. gtate (1915) – kinglouie (1895), net–chess.com, 2004.

5.Bb2 b5 6.d4 (6.Nf3 ab4 7.ab4 Ra1 8.Ba1 Na6=) 6...Nf6 7.Nc3 d5 8.Nf3 Bf5 9.e3 e6 (9...Nbd7 10.Bd3 Bd3 11.Qd3=) 10.Bd3 (10.Nh4 Bg4 11.f3 Bh5=) 10...Bg6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0–0 (11.Ne5 Nbd7 12.Ng6 hg6+=) 11...Be7 12.Ne5 0–0 13.Ne2 (13.Ng6 hg6 14.Qe2 Nbd7+=) 13...Nbd7 14.Nf4 Ne5 (14...Bd3 15.Qd3 Ne5 16.de5=) 15.de5+= Nd7 16.Ng6 hg6 17.f4 Rfd8 18.Qg4 Nf8 19.Bd4 Qd7 20.h4 Qe8 21.h5 gh5 22.Qh5 f5 23.Qh3 g6 (23...Ra7 24.Kf2 ab4 25.ab4+=) 24.g4+/– ab4 25.ab4 Ra1 (25...Ra4 26.gf5 gf5 27.Kf2 Ra1 28.Ra1+/–) 26.Ra1 Ra8 27.Rd1 (27.Ra8 Qa8 28.gf5 Qa3+/–) 27...Qf7+= 28.Kf2 Qh7 29.Qh7 Kh7 30.Rh1 Kg7 31.Ra1 Ra1 32.Ba1 ½–½. Krivoshapko,Alexander – Tipikin,Ivan, 2013.

5.Bb2 b6 6.cb6 Qb6 7.ba5?? Qb2 0–1. Panczyk – Duske, corr DDR 1975.

5.Bb2 b6 6.d4 ab4 7.ab4 Ra1 8.Ba1 =.

5.Bb2 b6 6.d4 bc5 7.dc5 ab4 8.ab4 Ra1 9.Ba1 Qa7 10.Nc3 (10.Bc3 d6 11.cd6 ed6+=) 10...Nf6 (10...Na6 11.Qa4+=) 11.Nf3 Qc7 (11...Na6 12.Qa4 Qb7 13.e4 Qb4 14.Ba6 Qa4 15.Na4 Ba6 16.Bf6 gf6 17.Kd2+=) 12.e3 d6 13.Bc4 (13.cd6 ed6 14.b5 d5+=) 13...d5 14.Bd3 e5 15.Nd2 e4 16.Be2 Be7 17.0–0 0–0 18.Na4 Nbd7 19.Nb3 Bb7 20.Nd4 Ra8 21.Nf5 Bf8 22.Bd4 Ba6 23.Nb6 Nb6 24.cb6 Qb7 (24...Qc8 25.Nh6 gh6 26.Bf6 Be2 27.Qe2=) 25.Bc5 Be2 26.Qe2 Nd7 27.Qc2 (27.Bf8 Nf8 28.Rc1 Ne6=) 27...Nb6 (better is 27...Nc5 28.bc5 Ra5+=) 28.Qc3?? (28.Bf8 Kf8 29.Qc3 f6 30.Qc5 Kg8 31.Ne7 Kf7 32.Nc6 Qc7+=) 28...f6 (better is 28...Na4 29.Qe5 Nc5 30.bc5 Qa7–+) 29.Bf8= Rf8 30.Qc5 Rd8 31.Ra1 (31.Ne7 Kf7 32.Nc6 Ra8+=) 31...Qc7 (31...Rd7!?=) 32.b5 Qd7?? (32...Qe5!? 33.Nd4 Nc4 34.Qc6 Rf8+/–) 33.Ne7 (better is 33.Qb6 Rf8 34.g4+–) 33...Kf7+/– 34.Nc6 (34.Qc6?! Nc4 35.Qd7 Rd7+=) 34...Nc4?? (better is 34...Ra8 35.Ra8 Na8+–) 35.Ra7 Qa7 (35...Kg6 36.Rd7 Rd7 37.Ne7 Kf7 38.Nd5+–) 36.Na7 (better is 36.Qa7 Kg6 37.Nd8+–) 36...Rd7 (36...Kg6 37.Nc8 Ne5 38.b6+–) 37.b6 Nb6 (37...Kg6 38.Qb5 Nb6 39.Qb6+–) 38.Qb6 Kg6 39.g3 (better is 39.Qb8 Kf7 40.Nc6 g6+–) 39...h5 40.h4 1–0. elektrooon – happytiger, kurnik, 2013.

5.Bb2 b6 6.d4 Nf6 7.e3 g6 8.Nf3 Bg7 9.Bc4 0–0 10.Ne5 d6 11.Nf7 Rf7 12.Bf7 Kf7 13.0–0 ab4 14.ab4 Ra1 15.Ba1 bc5 16.bc5 d5 17.Nd2 Nbd7 18.Nf3 Ne4 19.h3 Ndf6 20.Ne5 Kg8 21.f4 Bf5 22.g4 Bc8 23.g5 Nh5 24.h4 Ba6 25.Rf3 Nhg3 26.Qa4 Ne2 27.Kh2 Be5 28.fe5 Qc8 29.Qa5 N2g3 30.Rg3 Ng3 31.Kg3 Be2 32.Kf2 Bd1 33.Ke1 Bh5 34.Qb6 Kg7 35.Bc3 1–0. avinoam – mily358, kurnik, 2014.

5.Bb2 d5 6.e3 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 d5 5.c5 Qc7 6.e3).

5.Bb2 d6 6.d4 d5 7.e3 Nf6 8.Nf3 Bf5 9.Be2 Nbd7 10.0–0 g6 11.b5 Bg7 12.b6 Qc8 13.Nbd2 0–0 14.a4 Ne4 15.Nh4 Nd2 16.Qd2 Be6 17.f4 f6 18.f5 Bf7 19.fg6 hg6 20.Bf3 f5 21.g3 e5 22.de5 Ne5 23.Be5 Be5 24.Rad1 Qe6 25.Ng2 Bg7 26.Nf4 Qe5 27.Qd4 Qe7 28.Qd3 Qc5 29.Rb1 Rfe8 30.Rfe1 Re7 31.g4 Rae8 32.gf5 Re3 33.Re3 Re3 34.Kg2 Rd3 35.Nd3 0–1. avinoam – marrr63, kurnik, 2013.

5.Bb2 d6 6.e3 ab4 7.ab4 Ra1 8.Ba1 dc5 9.bc5 Qa5 10.Nc3 Qc5 11.Na4 Qa5 12.Bc3 Qc7 13.Qa1 f6 14.Nf3 Nd7 15.Bc4 Nh6 16.Be6 b5 17.Bd7 Bd7 (worse is 17...Kd7 18.Ba5 Qb8 19.Qd4 Ke6 20.Nb6=) 18.Nc5 e6 19.Bb4 Nf7 20.0–0 Bd6 21.d4 0–0 22.Qa2 Bc5 23.Bc5 Rb8 24.Ra1 Bc8 25.Qa3 Bb7 26.Qb3 Nd8 27.Nd2 Ra8 28.Ra8 Ba8 29.Qa2 Bb7 30.Qa7 Qc8 31.Bb6 Nf7 32.Qa2 Nd6 (32...e5 33.Qb3+=) 33.e4 (33.Bc5 Qd7=) 33...Kf7 (better is 33...c5!? 34.dc5 Ne4 35.Ne4 Be4–/+) 34.e5 Nc4 35.Nc4 bc4 36.Qc4 Qd7 (36...fe5 37.de5 Qd7 38.Qf4 Ke8 39.h3=) 37.f4 Qd5 38.Qd5 cd5 ½–½. Zahn,Richard (2055) – Vandenbergen,Nicolas (1740), Niederrhein–ch, 2003.

5.Bb2 d6 6.e3 dc5 7.bc5 e6 8.Nf3 Nf6 9.Qc2 Na6 10.d4 b6 11.cb6 Qb6 12.Nc3 Rb8 13.Bc1 Qb3 14.Qb3 Rb3 15.Bd2 Bd6 16.Be2 0–0 17.0–0 Ra3 18.e4 Ra1 19.Ra1 Bb4 20.e5 Nd7 21.Ne4 c5 22.Ba6 Ba6 23.dc5 Bb7 24.Bb4 ab4 25.Nd6 Bf3 26.gf3 Nc5 27.Rb1 b3 28.f4 Rb8 29.Kf1 Nd3 30.Ke2 Nf4 31.Ke3 Nd5 32.Kd4 Kf8 33.Kc4 b2 34.Kd3 Ke7 35.Kc2 f6 36.Nc4 Rc8 37.Kd3 fe5 38.Ne5 Rc3 39.Kd2 Rh3 40.Rb2 Rh2 41.Ke1 Kd6 42.Nd3 g5 43.Rb7 h5 44.Rg7 g4 45.Rg5 Nc3 46.Kd2 Ne4 47.Ke3 Ng5 48.Nf4 Nf7 49.Ng6 e5 50.Nf8 h4 51.Nh7 Rh3 52.Ke2 Rf3 53.Nf8 1–0. avinoam (1640) – mikolajm1 (1620), kurnik, 2014.

5.Bb2 e5 6.Nc3 b6 7.d4 d6 8.Nf3 Nd7 9.cd6 Bd6 10.b5 Ngf6= 11.bc6 Qc6 12.e3 Ba6 13.Ba6 Ra6 14.Qe2 Ra8 15.Nb5 e4 16.Rc1 Qd5 17.Nd6 Qd6= 18.Ne5 0–0 19.Rc6 Qd5 20.Qc2 Ne5 21.de5 Nd7 22.0–0 Ne5 23.Be5 Qe5 24.a4 Rab8 25.Rb1 Rfd8 26.Rcb6?? Rb6=+ 27.Rb6 Qc5!? Schuhler – Poehlmann, corr, 1975.

5.Bb2 e5 6.d4 ab4 7.ab4 Ra1 8.Ba1 d6 +=.

5.Bb2 e5 6.Nc3 b6 7.d4 d6 8.Nf3 Nd7 (8...ab4 9.cb6 Qb6 10.ab4 Ra1 11.Ba1=) 9.cd6 Bd6 10.b5 (10.Rc1 Qb8 11.Ne4 ab4 12.de5 Bf8 13.Nd6 Bd6 14.ed6 f6 15.ab4 Ra2+–) 10...Ngf6= 11.bc6 Qc6 12.e3 (12.e4 ed4 13.Nd4 Qc7=) 12...Ba6 Black plans e4 13.Ba6 Ra6 14.Qe2 Ra8 15.Nb5 e4 16.Rc1 (16.Ne5 Qd5=) 16...Qd5 17.Nd6 (17.Nd2 0–0=) 17...Qd6= 18.Ne5 0–0 19.Rc6 Qd5 20.Qc2 Ne5 21.de5 Nd7 22.0–0 Ne5 23.Be5 Qe5 24.a4 Rab8 25.Rb1 Attacking the backward pawn on b6 25...Rfd8 26.Rcb6?? (26.Rb5 Qe7=) 26...Rb6+= 27.Rb6 Qc5!? 1–0. Schuehler,Ernst – Poehlmann, corr, 1988.

5.Bb2 e5 6.e4 d6 7.d4 ab4 8.ab4 Ra1 9.Ba1 f6 10.de5 fe5 11.Qc2 dc5 12.bc5 Nf6 13.Nf3 Bg4 14.Ne5 Be7 15.Ng4 Ng4 16.Bg7 Rg8 17.Bd4 Nd7 18.h3 Ngf6 19.Nd2 Qa5 20.g3 Nc5 21.Bg2 Nb3 22.Bc3 Bb4 23.Bb4 Qb4 24.Qb3 1–0. kaasparov – piotrms, kurnik, 2013.

5.Bb2 Nf6 6.d4 d5 7.e3 Bf5 8.Bd3 Bd3 9.Qd3 g6 10.Nd2 Bg7 11.Ngf3 0–0 12.0–0 Nbd7 13.b5 Rfe8 14.b6 Qb8 15.Rac1 Nh5 16.e4 de4 17.Ne4 Nf4 18.Qb3 Nd5 19.Rfe1 Qf4 20.Rc2 h6 21.Bc1 Qb8 22.g3 Kh7 23.Rce2 a4 24.Qc2 Ra5 25.Bd2 Ra8 26.Nc3 N7f6 27.Ne5 Nc3 28.Bc3 Nd5 29.Nf7 Qc8 30.Nd6 ed6 31.Re8 Qe8 32.Re8 Re8 33.cd6 Rd8 34.Bb4 Rd7 35.Bc5 Bf8 36.Qa4 Bd6 37.Bd6 Rd6 38.Qb3 Rd7 39.a4 Ne7 40.Qf7 Kh8 41.Qe8 1–0. kaasparov – mamaolka, kurnik, 2014.

5.Bb2 Nf6 6.e3 e6 7.Nf3 b6 8.d4 (8.cb6 Qb6 9.Bd4 Qd8 10.ba5 c5=) 8...Ba6 9.Ba6 Na6 10.0–0 ab4 11.ab4 Be7 12.Qe2 b5 13.Bc3 0–0 14.Nbd2 (14.e4!?=) 14...Nd5+= 15.Qd3 Nc3 (better is 15...Nab4!? 16.Bb4 Nb4+=) 16.Qc3= f5 17.Ra3 Qb7 18.Rfa1 Nc7 19.Ne5 Nd5 20.Qb3 Nf6? (better is 20...Ra3!? 21.Qa3 d6+=) 21.Ra8 Ra8 22.Ra8 Qa8 23.h3 (23.Nd7!? Nd5 24.Nb6 Qa1 25.Nf1+/–) 23...Qa1+= 24.Kh2 Qe1? (better is 24...Nd5 25.Ndf3 Qa4+=) 25.Kg3?? (better is 25.Nd7 Nd7 26.Qe6 Kf8 27.Nf3 (27.Qd7?! Qd2 28.Qf5 Bf6+/–; 27.Qc6?! Qd2 28.Qd7 Qf2=; worse is 27.Qf5 Nf6 28.Ne4 Qb1 29.Qc8 Ne8 30.Qc6 Qb4+/–) 27...Qf2 28.Qd7+–) 25...h5?? (25...Qd2 26.Nd7 Nd5 27.Qa3–+) 26.Nef3?? (26.Nd7 Nd5 27.Nf3 h4 28.Kh2 Qf2+=) 26...Qa1?? (better is 26...h4!? 27.Kh2 Qf2–+) 27.Ng5 (27.Kh2 Nd5=) 27...Qe1 28.Ne6?? (28.Ngf3 h4 29.Kh2 Qf2–+) 28...de6?? (better is 28...Qd2 29.Nf4 Kf8 30.Ng6 Ke8–+) 29.Qe6+= Kf8 30.Nf3 (better is 30.Qc8 Ne8 31.Qf5 Bf6 32.Nf3 Qb4 33.Ne5+=) 30...Ne4?? (better is 30...h4 31.Kh2 Qf2=) 31.Kh2+– Qf2 32.Qf5 (better is 32.Qc8 Kf7 33.Qf5 Kg8 34.Qe4+–) 32...Nf6+= 33.Qc8 Ne8 34.Qc6 Qe3 35.Qg6 (better is 35.Qb5!? Qf4 36.Kg1+=) 35...Qf4 36.Kg1 Bf6 37.Qh5? (37.Qd3 Nc7–/+) 37...Nc7 (better is 37...Bd4!? 38.Kf1 Bc3–+) 38.Qh8 Kf7 (38...Ke7!? 39.Qc8 Bd4 40.Nd4 Qd4 41.Kh1 Qa1 42.Kh2 Qe5 43.Kg1 Nd5 44.Qb7 Kd8 45.Qa8 Kd7 46.Qa7 Nc7–/+) 39.Qh5= Kf8 40.Qh8 Ke7 41.Qc8 Ne6 (better is 41...Bd4!? 42.Nd4 Qd4 43.Kh2 Qe5 44.Kg1 Nd5 45.Qb7 Kd8 46.Qa8 Kd7 47.Qa7 Nc7–/+) 42.d5 Nd4 43.Qb7 Kf8 0–1. typ48 – aaaawwww (1670), playok.com, 2012.

5.Bb2 Nf6 6.e3 e6 7.Nf3 d6 8.cd6 Bd6 9.Bf6 gf6 10.b5 Bd7 11.bc6 Nc6 12.Be2 Ke7 13.Nc3 h5 14.Nb5 Qb8 15.Nd6 Qd6 16.d4 h4 17.h3 Rac8 18.0–0 Rcg8 19.Kh1 Nd8 20.Qc2 Bc6 21.Rfc1 Rg7 22.e4 Rhg8 23.d5 ed5 24.ed5 Bd5 25.Qc7 Ke6 26.Qc8 Qd7 27.Nd4 Kd6 28.Nf5 Qf5 29.Qf5 Rg2 30.Bf3 Bf3 31.Qf3 Ne6 32.Rd1 Ke7 33.Qb7 Kf8 0–1. emeryt85 – zihulak, kurnik, 2013.

5.Bb2 Nf6 6.Nf3 d6 7.d4 Bf5 8.e3 Nbd7 9.Bd3 Bg6 10.0–0 e5 11.de5 Ne5 12.Ne5 de5 13.Bg6 hg6 14.h3 Be7 15.Nd2 ab4 16.ab4 Rd8 17.Qb3 Rd2 18.Qc3 0–0 19.Qd2 Nd5 20.Rfd1 e4 21.Qd4 Bf6 22.Qd2 Bb2 23.Qb2 f5 24.b5 Qe7 25.bc6 bc6 26.Qa3 f4 27.ef4 Rf4 28.Qa8 Kh7 29.Qc6 Nb4 30.Qd6 Qf7 31.Rd2 Nd3 32.Rf1 Rf6 33.Qg3 g5 34.Qe3 Rf4 35.c6 Ne5 36.Rc2 Qc7 37.Qd4 g4 38.g3 Nf3 39.Kg2 gh3 40.Kh3 Nd4 0–1. kaasparov – juniortahl (1610), kurnik, 2013.

4.c5 Qd8

5.Bb2 ab4 6.ab4 Ra1 7.Ba1 d5 8.e3 f6 9.Be2 e5 10.Nf3 Nh6 11.Qc2 Be7 12.h3 0–0 13.0–0 Bf5 14.Qa4 Nd7 15.Nc3 Qa8 16.Qb3 Be6 17.e4 b6 18.ed5 cd5 19.Bb2 bc5 20.bc5 Nc5 21.Qc2 d4 22.Ra1 Qb7 23.Nd1 e4 24.Nd4 Bf7 25.Bc4 Nd3 26.Bf7 Nf7 27.Nf5 Bc5 28.Nde3 Rc8 29.Qb1 Qb2 30.Qb2 Nb2 31.Nd5 Rb8 32.Rb1 Nd6 33.Nfe7 Kf7 34.Nc6 Rb3 0–1. emeryt85 – malchik54 (1630), kurnik, 2014.

5.Bb2 Nf6 6.Nc3 d5 7.d4 Bf5 (7...ab4 8.ab4 Ra1 9.Ba1=) 8.Nf3 Nbd7 (8...ab4 9.ab4 Ra1 10.Qa1=) 9.e3 e6 10.Be2 (10.b5 Be7+=) 10...Be7 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0–0 Qc7 (11...ab4 12.ab4 Ra1 13.Ba1+=) 12.Nh4 Bg6 (12...Be4 13.b5+= (13.Ne4?! de4 14.g3 Nd5=)) 13.b5+/– 0–0 14.Ng6 hg6 (14...fg6 15.Rb1+/–) 15.b6 Qb8 16.Qc2 e5 17.Bc1 Nh7 18.Bd2 Bf6 19.Qa4 Re8 (19...Qe8 20.Rfe1+/–) 20.Bg4 (20.Nd5!? ed4 21.Rac1 Qe5+/–) 20...Nhf8 21.Rae1 (21.Nd5 cd5 22.Bd7 Nd7 23.Qd7 ed4 24.Rae1 de3 25.Re3+=) 21...Ne6 (better is 21...Qc8!?+/–) 22.Nd5!+– Ndc5? 23.Nf6 gf6 24.dc5 Nc5 25.Qc2 Ne6 26.Be6 Re6 27.e4 (27...Rd6 28.f4+–) 1–0. HFlew – Mayor, playchess.de, 2003.

5.Bb2 Nf6 6.Nc3 d6 7.d4 ab4 8.ab4 Ra1 9.Qa1 dc5 10.dc5 Na6 11.Qa3 Qd4 12.Na2 Qe4 13.Nf3 Qb1 14.Nc1 Nd5 15.Nd2 Qc2 16.Nd3 f5 17.e3 e5 18.Be5 Nab4 19.Nb4 Qc5 20.Qa8 Nb6 21.Qa1 Qb4 22.Bg7 Rg8 23.Bf8 Rf8 24.Qe5 Kf7 25.Qc7 Kg8 26.Be2 Qb2 27.Qg3 Qg7 28.0–0 Qg3 29.hg3 Kg7 30.Rb1 Na4 31.Bf3 Rd8 32.Nc4 Nc3 33.Rb6 Nb5 34.Na5 Nd6 35.Nb3 Re8 36.Be2 Kf6 37.Bd3 Re5 38.Nd4 Ra5 39.Rb2 Ra1 40.Kh2 h6 41.Bc2 Nc4 42.Rb4 Nd2 43.Bd3 Nf1 44.Bf1 Rf1 45.Rb2 Rd1 46.Nb3 Rd5 47.Nd4 Ke5 48.Kg1 c5 49.Nb5 c4 50.Kf1 Rd3 51.Nd4 c3 52.Rb5 Kd6 53.Rb6 Kd5 54.Ke1 h5 55.Rb5 Kc4+= 56.Rb6 Rd2–/+ 57.Rd6 Ra2 58.Rd8 Ra8 59.Nc2 b5 60.Kd1 Bb7 61.Rd4 Kc5 62.Rd7 Bg2 63.Rc7 Bc6 64.Nd4 Ra6 65.Nc6 Rc6 66.Ra7 Rd6 67.Kc2 Kb4 68.Rf7 Rd2 69.Kc1 Rf2 0–1. Fournier,Frederic (2100) – COMP TaoGizmo (2505), Active, 2004.

3.a3 c5

4.b5 Nf6 5.e3 d5 6.d3 Be6 7.Nf3 g6 8.Be2 Bg7 9.0–0 0–0 10.Nbd2 (better is 10.Bb2!?=) 10...dc4–/+ 11.dc4 Nbd7 (better is 11...Ne4! 12.Ne4 Ba1–/+) 12.Rb1 Rad8 13.Qc2 a6 14.a4 a5 15.Ne4?? (15.e4 Bg4=) 15...Bf5 (15...Ne4 16.Bb2 (16.Qe4?? Bf5 17.Qe7 Bb1–+) 16...Nef6 17.e4–+) 16.Nf6? (better is 16.Bd3=) 16...Nf6–+ (16...Bf6?! 17.e4 Bg4 18.Bh6=; 16...Qf6?! 17.e4 Bg4 18.Rd1=) 17.Qa2 Bb1 18.Qb1 Qe6 19.Bb2 b6 20.h3 Ne4 21.Bg7 Kg7 22.Bd3 f5 23.Be4 fe4 24.Qb2 Qf6 25.Qf6? (better is 25.Ne5–+) 25...ef6 (25...Rf6?! 26.Ng5–+) 26.Nh2 f5 27.g4 Rd2 28.gf5 gf5 29.Kg2 Kf6 30.Kg3 (30.h4 Rg8 31.Kh3 Rc2–+) 30...Ke5 (30...Rg8 31.Kh4–+) 31.f4 ef3 (better is 31...Ke6 32.Rh1 Rg8 33.Kh4 Rc2–+) 32.Nf3+= Ke4 33.Nd2 Ke3 34.Nf3 Rg8 35.Kh4 f4? (better is 35...Ke2!? 36.Nh2 Rg2+/–) 36.Ng5 h6 37.Ne6?? (better is 37.Nh7 f3 38.Nf6+/–) 37...f3= 38.Kh5 Ke2 39.Ra1 f2 40.Nf4 Kf3 41.Nd3?? (41.Ng6 Ke2=) 41...Rg3?? (better is 41...Rg1 42.Nf2 Ra1–+) 42.Nf2= (42.Kh6? Rg1 (42...Rh3?! 43.Kg5=) 43.Nf2 Ra1–+) 42...Kf2 43.Kh6?? (better is 43.h4+=) 43...Rh3–/+ 44.Kg5 Rc3 45.Rd1 Rc4 46.Rd6 Ra4 47.Rb6 Rb4 48.Rb8 c4 49.b6 c3 50.b7 Kg3 51.Kf5 c2 52.Rg8 Kf3 53.b8Q?? (53.Rc8 Rb7 54.Rc2–+) 53...Rb8 54.Rb8 c1Q 55.Rb3 (55.Rh8 a4 56.Rh3 Kg2–+) 55...Ke2 (55...Ke2 56.Rg3 a4–+) 0–1. avinoam – badej, kurnik, 2012.

4.b5 a6

5.a4 ab5 6.cb5 d5 7.Bb2 d4 8.e3 e5 9.ed4 ed4 10.Bc4 Be6 11.d3 Bc4 12.dc4 Qe6 13.Ne2 Qc4 14.0–0 Nd7 15.Re1 Be7 16.Nd2 Qd5 17.Nf4 Qg5 18.g3 Ngf6 19.Nc4 Kf8 20.h4 Qf5 21.Ba3 b6 22.Re7 Ke7 23.Qd4 Kd8 24.Qd6 Ne4 25.Qd3 Kc7 26.Bb2 f6 27.Nd5 Kb7 28.Qe4 Qe4 29.Nd6 Ka7 30.Ne4 Rae8 31.Nd6 Re6 32.Nc4 Rhe8 33.a5 Re1 34.Kg2 Ra1 35.ab6 Kb7 36.Nd6 Kb8 37.Ne8 Rb1 38.Bc3 Rb5 39.Ng7 Nb6 40.Nb6 Rb6 41.Nf5 Kc7 42.Ne7 Kd7 43.Nd5 Rd6 44.Nf6 Ke6 45.Ne4 Rc6 46.Ng5 Kd5 47.Nh7 Kc4 48.Be5 Kd5 49.f4 c4 50.Nf6 Ke6 51.Ne4 Kf5 52.Kf3 Ke6 53.g4 Kd5 54.h5 Ra6 55.g5 Ra3 56.Nc3 Ke6 57.Ke4 Ra1 58.h6 Re1 59.Kd4 Kf5 60.h7 Rh1 1–0. kaasparov – mdmarek, kurnik, 2014.

5.a4 ab5 6.cb5 d5 7.Bb2 Nf6 8.Nf3 d4 9.g3 (9.e3!?+=) 9...Nbd7+= 10.Bg2 e5 11.d3 Bd6 12.0–0 0–0 13.Qd2 h6 14.Na3 Qd8 15.Nc4 Qe7 16.b6 Nb8 17.Nh4 Be6?? (better is 17...Rd8=) 18.Nd6+– Qd6 19.Bb7 Nc6 20.Ba8 Ra8 21.Rfb1 (21.a5 Ra6+–) 21...Nd5 22.Bc1 Ndb4 23.f4 Qb8 24.fe5 Qb6 25.Qf4 Qc7 26.Nf3 Bd5 (26...Nc2 27.Bd2=) 27.Bd2 (27.Rb2+/–) 27...Qe7? (better is 27...Nc2=) 28.Bb4+– Nb4 29.a5 (better is 29.Nd4 cd4 30.Qd4+–) 29...Nc2+= 30.Ra2?? (30.e4!? de3 31.Ra4+=) 30...Ne3?? (better is 30...Ba2 31.Qe4 Re8 32.Rb5–+) 31.a6?? (better is 31.Rab2 Ra5 32.Qh4 Qh4 33.Nh4+=) 31...Ba2–+ 32.Rb7 Qe6 33.Qe4 (33.a7 Qc8 34.Rb8 Rb8 35.ab8R Qb8 36.Nd4 Qb1 37.Kf2 Nd1 38.Kf3 Bd5 39.Kg4 cd4 40.Kh5–+) 33...Bd5 34.Qh4 Ra6 (34...Bb7 35.g4 Bf3 36.h3–+) 35.Qd8 (35.Rb8 Kh7 36.Nd2–+) 35...Kh7 36.Rb1 Bf3 37.ef3 Qe5 (37...Qa2 38.Qg8 Kg8 39.Rb8 Kh7 40.Rh8 Kh8 41.e6 Qg2) 38.Kf2 (38.Qh4 Ra3–+) 38...Nc2 (38...Ra2 39.Kg1 Ng4 40.Qc7 Qe3 41.Kh1 Rh2) 39.Qc8 (39.Kf1 Qe6 40.Kf2 Qe3 41.Kg2 Qe2 42.Kh3 Ne3 43.Qg8 Kg8 44.Rb8 Kh7 45.Rh8 Kh8 46.g4 Qf3 47.Kh4 Qg4) 39...Qe3 (39...Ra2 40.Qa8 Na3 41.Kg1 Qe3 42.Kh1 Qd2 43.Qh8 Kh8 44.Rb8 Kh7 45.Rh8 Kh8 46.h3 Qe1) 40.Kg2 Re6 41.Rf1 (41.Qb7 Qe2 42.Kh3–+) 41...Qd3 (41...Qe2 42.Kg1 Ne3 43.Qh8 Kh8 44.Rf2 Qe1 45.Rf1 Qf1) 42.Rf2–+ Ne3 43.Kh3 Nd1 0–1. korwiktor (1685) – biskup1410 (1695), kurnik, 2012.

5.Nc3 g6 6.Bb2 Bg7 7.Nd5 1–0. tyop (1775) – martoha1 (1615), kurnik, 2013.

5.e3 ab5 6.cb5 d5 7.Bb2 Nd7 8.Nf3 Ngf6 9.Be2 g6 10.0–0 Bg7 11.Qc2 0–0 12.a4 Re8 13.d3 e5 14.Nbd2 d4 15.Nc4 Qc7 16.Rfe1 Nb6 17.Bf1 Nc4 18.Qc4 Be6 19.Qc2 Rac8 20.Rac1 Bd5 21.Ng5 h6 22.Nh3 e4 23.ed4 ed3 24.Bd3 Re1 25.Re1 c4 26.Rc1 Kh7 27.g3 Ne8 28.Nf4 cd3 29.Qd3 Qc1 0–1. barborski (1605) – biskup1410 (1710), kurnik, 2013.

5.e3 ab5 6.cb5 d5 7.Bb2 Nf6 8.a4 e6 9.Nf3 Be7 10.Be2 0–0 11.0–0 Bd7 12.Nc3 Be8 13.Ne5 Nbd7 14.f4 c4 15.Bf3 Nc5 16.d4 cd3 17.Nd3 Nce4 18.Be4 Qe3 19.Rf2 Ne4 20.Ne4 de4 21.Ne5 Bc5 22.Ng4 Qd3 23.Qd3 ed3 24.Rd1 Ra4 25.Kf1 Bf2 26.Nf2 Bb5 27.Nd3 Rd8 28.Ke2 Rf4 29.Ke3 Rb4 30.Nb4 Rd1 31.h4 Re1 32.Kf4 Re2 33.Bd4 Rg2 34.h5 g6 35.h6 f5 36.Bg7 Rg4 37.Ke5 Rb4 38.Ke6 Re4 39.Kd5 Bc6 40.Kc5 f4 41.Bc3 f3 42.Be1 Re1 0–1. avinoam (1605) – biskup1410 (1675), kurnik, 2013.

5.e3 Nf6 6.Nf3 ab5 7.cb5 d5 8.Bb2 Bg4 9.a4 (9.h3 Bh5+=) 9...e6 10.Be2 c4 11.Bf6 gf6 12.0–0 Bg7 13.Nc3 0–0 14.h3 Bf3 15.Bf3 Nd7 16.Qc2 f5 17.Rfb1 Nc5 18.Be2 Nb3 19.Rb3 cb3 20.Qb3 Bc3 (better is 20...d4!? 21.ed4 Bd4–/+) 21.Qc3= Rfc8 22.Qb4 Qc5 23.Qh4 b6 24.Qg5 Kf8 25.Bh5 Qe7 26.Qh6 Kg8 27.g4? (27.d4 Rc4+=) 27...Qf8 (27...fg4!? 28.Bg4 Rc4 29.Kh2–+) 28.Qf4 (28.Qf8 Kf8 29.gf5 e5+=) 28...Qg7 29.Ra2 (29.d4!? fg4 30.Kh2–/+) 29...fg4–/+ 30.hg4 Rc4 (30...Rc1 31.Kg2–/+) 31.Qg3 (31.d4 e5 (31...Rca4?! 32.Ra4 Ra4 33.Qb8 Qf8 34.Bf7 Kf7 35.Qf4 Kg8 36.Qg5 Qg7 37.Qd8 Kf7 38.Qc7 Kg6 39.Qc2 Kf6 40.Qa4=) 32.Qf5 ed4 (32...Raa4?! 33.Qd7=; 32...Rca4?! 33.Ra4 Ra4 34.Qd7=) 33.Qd5 Rac8–/+ (33...Raa4?! 34.Qd8 Qf8 35.Qg5 Kh8 36.Qf6 Qg7 37.Qd8 Qg8 38.Qf6 Qg7 39.Qd8 Qg8 40.Qf6 Qg7=)) 31...Rca4 (31...e5–+) 32.Rc2? (32.Ra4 Ra4 33.Qb8 Qf8 34.Qb6 d4–/+) 32...Rc4 (32...R4a5!? 33.Rc7 Rf8 34.d4–+) 33.Rc4–/+ dc4 34.Qc7 f5 (34...f5 35.Qc4 Qe5+=) 0–1. barborski – anhba, playok.com, 2012.

3.a3 Qd4

4.Ra2 Qc4 5.Rc2 Qe6 6.Bb2 Nh6 7.Nf3 f6 8.Nd4 Qd5 9.f3 Nf5?? (better is 9...Qg5+=) 10.e4+– Qd6? (better is 10...Qd4 11.Bd4 Nd4+–) 11.Nf5 Qc7 12.Be2 e6 13.Nd4 e5 14.Nf5 (14.Nb3 d6+–) 14...d6 (14...d5 15.Ng3 Be6 16.ed5 Bd5 17.Rc1+–) 15.0–0 Bf5 16.ef5 Nd7 17.d4 Nb6 18.de5 de5 19.Nd2 (19.f4 Nd5 20.fe5 0–0–0+–) 19...Qc8?? (19...Nd5!?+/–) 20.Qe1 (better is 20.f4 Nd5 21.Bh5 (worse is 21.fe5 Ne3 22.Qb1 fe5+–) 21...Kd8 22.Nc4 (worse is 22.fe5 Ne3 23.Qb1 fe5+–) 22...ef4 23.Bf7 Qf5 24.Ne3+–) 20...Qf5 21.Ne4 Qg6 (21...Nd5 22.Rd2+–) 22.Rd2 Nd5 23.Bd3 Qf7? (23...Qh6 24.Qf2+–) 24.Bc4 (24.f4 Qc7+–) 24...Rd8 (24...b5 25.Bd5 cd5 26.Nc3+–) 25.Nc3 (25.f4 b5 26.fe5 f5 27.Nd6 Bd6 28.ed6 Kd7 29.Bd5 cd5 30.Rf5 Qe6+–) 25...Qe7 (25...b5 26.Bd5 cd5 27.f4+– (27.Nb5?! Qb7 28.Nd4 Kf7+–)) 26.Bd5 cd5 27.Nd5 Qe6 (27...Qf7 28.Qd1 Bd6+–) 28.Nc7 Ke7 29.Ne6 Ke6 30.Rd8 (30.Rd8 Bc5 31.bc5 Rd8 32.f4+–) 1–0. 55aa55 – moe1976, kurnik, 2012.

4.Bb2 Qb2 5.Nc3 +=.

4.Bb2 Qc4 5.e3 (5.Nf3 Qe6+=) 5...Qe6 6.Nf3 d5 7.Be2 (7.Nc3 Qd6+=) 7...Nf6 (7...Nd7 8.0–0+=) 8.0–0 g6 9.Be5 Bg7 10.Nc3 Nbd7 11.Bf4 Ne4 12.Ne4 Qe4 (12...de4 13.Ng5 Qf5 14.Rc1=) 13.d4= 0–0 14.Ng5 Qf5 15.Bg4 Qf6 16.Nf3 Bh8 17.Rc1 Qg7 18.b5 Nb6 (worse is 18...cb5 19.Rc8 Rfc8 20.Bd7+/–) 19.Bc8 Rfc8 (worse is 19...Nc8 20.bc6 bc6 21.Rc6+/–) 20.bc6 bc6 21.Ne5 g5 22.Bg3 Qh6 23.Nd3 (23.Qg4 Be5 24.Be5 Nc4+=) 23...Nc4 24.Qa4 e6 (24...Bg7 25.Rfd1+=) 25.Qa7?? (better is 25.Rc4 dc4 26.Qc4=) 25...Ra7–+ (25...Ra7 26.Rfd1 Ra3–+) 0–1. Kaniak,Andrzej – Sutton, email 4AMM–09, 1997.

4.Qc2? Qa1

5.Bb2 Qa2 6.d3 e5 7.Nc3 Bb4 8.ab4 Qa6 9.Ne4!

5.Bb2 Qa2 6.d3 Nf6.

5.Bb2 Qa2 6.e3 Na6 7.Nc3 Nb4 8.ab4 Qa6 9.c5 b5 10.Nf3 Qb7 11.Bd3 Nf6 12.Ne5 a5 13.g4? (better is 13.ba5 d6 14.cd6 ed6 15.Nf3–+) 13...ab4 (better is 13...d6!? 14.cd6 ed6 15.g5–+) 14.Ne4 Ne4 15.Be4 e6 16.Bh7 b3 17.Qe4? (17.Qb3 Rh7 Deflection) 17...Ra2 (better is 17...Bc5 18.Bg6 Rf8 (worse is 18...fg6 19.Qg6 Kd8 20.Nf7 Kc7 21.Nh8+=) 19.Nf7 Rf7 20.Bg7 d5–+) 18.Bg6 Rh6?? (better is 18...Bc5 19.Bf7 Kd8–+) 19.Nf7+– Rg6 20.Nd6 Bd6 (20...Kd8 21.Nb7 Bb7 22.Qg6 Rb2+–) 21.Qg6 Kd8 (21...Ke7 22.Qg7 Ke8 23.cd6 Ra1 24.Ba1 b2 25.Qe7) 22.cd6 Rb2 (22...Ra1 23.Ba1 c5 24.Qg5 Ke8 25.Qe7) 23.Qg5 (23.Qg5 Ke8 24.Qe7#) 1–0. Schumacher,Dirk (2035) – Doeppner,Tilo (2175), Mecklenburg VP LL, 2007.

5.Bb2 Qa2 6.e4 Na6 7.Nf3 (7.Be2 Nb4 8.ab4 d6–+) 7...Nb4 8.ab4 Qa6 9.Be2 (9.c5 b5–+) 9...Qb6 10.Qb3 (10.Bc3 d6–+) 10...f6 (better is 10...a5!? 11.Bc3 c5 12.b5–+) 11.c5 Qc7 12.0–0 Nh6 13.d4 e6 (13...d6 14.Nbd2–+) 14.Nbd2 (14.Bc1 Nf7–/+) 14...b5 (14...d5 15.Ra1–/+) 15.d5–/+ e5 (15...a5 16.d6 a4 17.Qc3–/+) 16.d6+= Qd8 17.Nh4 g6 18.f4 Bg7 (18...ef4 19.e5 f5 20.Nf5 Nf5 21.e6 Bd6 22.Bh8+=) 19.Nf5 (19.fe5 fe5 20.Nhf3 Rf8=) 19...Nf5 (better is 19...gf5!? 20.Bh5 Kf8 21.fe5 Rg8 (21...fe5 22.Rf5 Qf6 23.Rf6 Bf6 24.Qf3+–) 22.ef6 Bh8+= (22...Bf6 23.Rf5 Rg5 24.Rf6 Qf6 25.Bf6 Rg6 26.Bg6 hg6 27.Be7 Kg7 28.Qc3 Kg8 29.Qf6 Rb8 30.Qg6 Kh8 31.Bf6)) 20.fe5 fe5 21.Rf5 Do you see the mate threat? 21...Rf8 22.Rh5 Qf6 (22...gh5 23.Bh5 A beautiful mate combination) 23.Re5 Kd8 (23...Qe5 24.Be5 Be5 25.Nf3+=) 24.Re8 Ke8 (24...Re8 25.Bf6 Bf6 26.Qa3+=) 25.Bf6 Bf6 26.Qh3 (26.e5 Bh4 27.Qh3 Bf2 28.Kh1 Rf7+–) 26...Rf7 (26...Bd4 27.Kh1 Rf7 28.Nf3+–) 27.Nf3 a5 28.e5 Bd8 29.e6 Threatening mate: exf7 29...de6 30.Ne5 Rg7 31.Ng6 (31.Bf3 Raa7 32.Bc6 Kf8 33.Qd3 ab4 34.d7 Bd7 35.Qd6 (35.Bd7?! Ra1 36.Kf2 Ra2 37.Ke1 Ra1 38.Ke2 Re7+–; 35.Nd7?! Kg8+–) 35...Re7 36.Nd7 (worse is 36.Bd7 Bc7 37.Qd4 Be5 38.Qe5 Red7+=) 36...Kg7 37.Ne5+–) 31...Bg5?? (31...Bf6 32.Ne5 Be5 33.Qh5 Kf8 34.Qe5 Kg8 (34...ab4 35.Qf6 Kg8 36.Qd8 Kf7 37.Qe7 Kg6 38.Bd3 Kh5 39.Qg7 Ra1 40.Qa1 e5 41.Qe5 Kh6 42.Qf6 Kh5 43.h3 Bh3 44.gh3 b3 45.Be2) 35.ba5 Bd7+–) 32.Bh5 (32.Qf3 hg6 33.Qc6 Bd7 34.Qa8 Kf7 35.Qf3 Bf6 36.ba5+–) 32...Kd8?? (32...hg6 33.Bg6 Kf8 34.Qh8 Rg8=) 33.Qf3+– (33.Qf3 Bd7 34.Qf8 Be8 35.Ne5+–) 1–0. Dupont,Gerhard – Diener,Rudolf, corr DDR–ch M781, 1985.

5.Bb2 Qb2?? 6.Qb2+/– Nf6 7.Nf3 d6 (7...d5 8.e3+/–) 8.d3 (8.d4 Bf5+–) 8...Bg4 (8...e6 9.d4+–) 9.Nbd2 e5 10.e4 Nbd7 11.Be2 Be7 (11...a5 12.d4 ab4 13.ab4 Bf3 14.Bf3 ed4 15.Qd4+–) 12.0–0 (12.d4 Bf3 13.Bf3 ed4 14.Qd4 0–0+–) 12...0–0+/– 13.Re1 (13.d4 a5+/–) 13...Ne8 (13...a5 14.d4 ab4 15.ab4+/–) 14.d4+– ed4 15.Nd4 Be2 (15...Be6 16.Qb3+–) 16.Ne2 (16.Re2 Bf6+–) 16...Bf6 17.Qc2 (17.Qb1 Rd8+–) 17...Nc7 (17...a5 18.b5+–) 18.Ng3 g6 (18...Ne5 19.Nf5 Rad8 20.Qb3+–) 19.Qd3 (19.Rd1 Rfd8+–) 19...Be7 (19...Ne5 20.Qe3+– (20.Qd6?! Ne6 21.b5 c5=)) 20.f4 Rad8 (20...Rfe8 21.Nf3+–) 21.Nf3 White prepares the advance e5 (21.Nb3 Nb6+–) 21...Rfe8 22.Qb3 (22.Rd1 Nb6+–) 22...a6 (22...Nb6 23.Qc3+–) 23.e5 (23.Qc2 Ne6 24.Qd2 b5+–) 23...de5 24.Ne5 (24.fe5 c5+–) 24...Ne5 (24...Bf6 25.Nf3+/–) 25.Re5 (25.fe5 Bf6 26.Qc3 Bg7+=) 25...Bf6 (25...f6 26.Re1+/–) 26.Re8 Re8 27.Kf1 (27.f5 Kf8+/–) 27...Kg7 (27...Kf8 28.f5+/–) 28.f5 Re7 (28...Be5 29.Qe3+/–) 29.Qd3+– Re8 (29...Be5 30.Ne4+–) 30.Qd7 (better is 30.Nh5! gh5 31.Qg3 Kh6 32.Qc7+–) 30...Re7+/– 31.Qd3 (better is 31.Qd6+/–) 31...Re8+– 32.Qd6 (32.Nh5! gh5 33.Qg3 Kh6 34.Qc7 Re7 35.Qf4 Kg7 36.Qg3 Kh6+–) 32...Re7+/– 33.fg6 (33.Kf2 h5+/–) 33...fg6 34.Ne2 Kf7 35.Nd4 (35.g3 Ke8+/–) 35...Be5 36.Qc5 White prepares b5 (better is 36.Qd8+/–) 36...Ne6?? (36...Bh2!? 37.Nf3 Bf4+=) 37.Ne6 (better is 37.Qe5 Nd4 38.Qd4+–) 37...Re6+/– 38.g3 h6 39.a4 (39.Qe3 Bg7 40.Qd3 Ke7+/–) 39...h5 (39...Re7 40.a5+/–) 40.b5 (40.a5 Re7+/–) 40...cb5 41.cb5 ab5 (41...b6 42.Qd5 ab5 43.ab5+/–) 42.Qb5 (42.a5 Re7+/–) 42...b6 43.a5 (43.Qd5 Ke7+/–) 43...ba5 44.Qa5 g5 (44...Kf6 45.Qd8 Kf7 46.Qd5+/–) 45.Qd5 (better is 45.Qa7 Re7 46.Qe3+/–) 45...Kf6 (better is 45...g4!?+/–) 46.Qd8+– Re7 47.Qh8 (better is 47.Qf8!? Ke6 48.Qh6 Bf6 49.Qh5+–) 47...Kg6+/– 48.Qg8 Rg7 (48...Bg7 49.Qd8 Re5 50.Qd3 Rf5 51.Kg2+/–) 49.Qe6 (49.Qe8 Rf7 50.Ke2 Bf6+/–) 49...Bf6 50.Kg2 (50.Qe4 Kh6+/–) 50...h4 (50...Re7 51.Qg8 Kf5 52.Qc8 Kg6 53.h3+/–) 51.gh4 (51.Qe4 Kh6+/–) 51...gh4 52.Kh3 (52.Kf3 Re7 53.Qg4 Bg5+/–) 52...Re7 53.Qg8 (53.Qg4 Bg5+/–) 53...Rg7 54.Qe8 (54.Qd5 Kh7+/–) 54...Rf7 (54...Kf5 55.Qc8 Ke5 56.Qb8 Kf5 57.Qd6+/–) 55.Kg4 Kg7 56.Kh5 Be7 57.Qc8 Kh7 58.Qe6 Threatening mate: Qxf7 58...Kg7 59.Qh6 Kg8 60.Qg6 (60.Kg4 Rf6 61.Qc1 Kf7+/–) 60...Kf8 61.Qe6 (61.Qc6 Rg7+/–) 61...Kg7 62.h3 Kf8 63.Qc8 (63.Qh6 Rg7+/–) 63...Kg7 64.Qe8 (64.Qg4 Kf8 65.Qe4 Rg7+/–) 64...Rf5 65.Kg4 The mate threat is Kxf5 65...Rf7 66.Qb8 Kh7 67.Qe5 Rg7 (67...Kg8 68.Qd5+/–) 68.Kf4 Bg5 (68...Rf7 69.Ke4+/–) 69.Kf5 Kh6 70.Qe8 Kh7 ½–½. Pauli – Labahn,Wolfgang, Alligator–Pokal D–Gr, 1980.

5.Nc3 a5 6.ba5 e5.

5.Nc3?? e5 6.e4 Bb4! 7.ab4 Nf6 8.c5 b5 9.Ke2 (9.Nf3–+) 9...Ne4?? (better is 9...Na6 10.Na2 Ne4 11.Qe4 Qa2 12.Qe5 Kd8 13.Qg7 Re8 14.Kf3 Qb3 15.d3 Qd1 16.Ne2 Qd3 17.Be3 Qf5 18.Nf4 Nb4–+) 10.Bb2? (better is 10.Ne4 0–0 11.Bb2=) 10...Nc3–+ 11.Bc3? (better is 11.Qc3 Qb1 12.Qe5 Kd8 13.Qg5 Kc7 14.Be5 Kb7 15.Qg7–+) 11...Qa3 12.g3 (12.Qe4 f6 13.f4 a5 14.ba5 Qc5 15.fe5 f5–+) 12...d6! 13.cd6 Qa6 (13...a5!? 14.ba5 0–0 15.Qe4–+) 14.Be5 Nd7?? (14...0–0 15.Kd1–+) 15.Bg2?? (better is 15.Bg7 Rg8 16.Qe4 Ne5 17.Be5+–) 15...Ne5–+ 16.Qe4 (16.d4 Bg4 17.f3 Bf5 18.Qf5 Qa2 19.Kf1 Qa1 20.Ke2 Qb2 (20...Qd4?! 21.f4 Qc4 22.Ke3 Qc3 23.Ke2–+) 21.Kf1 Qd4–+) 16...f6 (better is 16...Kd8 17.f4 Bg4 18.Kf2 Qb6 19.d4 Ng6–+) 17.f4 Bg4 18.Ke1?? (better is 18.Nf3 0–0 19.fe5–+) 18...Qa1 (better is 18...0–0 19.fe5 Qa1 20.Kf2 fe5 21.Nf3 Bf3 22.Qh7 (22.Ra1?? Be4 23.Kg1 Bg2 24.Kg2 Rfd8–+) 22...Kh7 23.Ra1 Bg2 24.Kg2–+) 19.Kf2 0–0–0 (better is 19...0–0 20.Nf3 Bf3 21.Bf3 Qa3 22.fe5 fe5–+) 20.fe5+= Bd7 21.Nf3 (21.e6!? Be8 22.d7 Bd7 23.ed7 Kb8 24.Ne2+–) 21...Qb2 (better is 21...Qa2 22.Bh3 Kb8 23.Bd7 Rd7 24.Qc6 Rb7+=) 22.Ke2?? (22.e6!? Be8 23.d7 Bd7 24.ed7 Kd7 25.Rb1+–) 22...f5 (22...fe5!? 23.Rb1 Qa3–+) 23.Qd4 Qd4 24.Nd4 Rhe8 25.Bh3?? (better is 25.Nf3+=) 25...Re5–+ 26.Kf2 Rf8 (26...Rd5 27.Nf3–+) 27.Nf3 Rd5 28.Re1 Rd2 (better is 28...f4 29.Bg2 g5–+) 29.Nd2+– f4 (better is 29...g5!?+–) 30.Bd7 Kd7 31.Kf3?? (31.Ne4 fg3 32.Kg3 a5+–) 31...g5? (31...fg3 32.Kg3 Kd6+=) 32.gf4?? (better is 32.Ne4 fg3 33.Kg3+–) 32...Rf4= 33.Kg3 h5?? (better is 33...Rb4!? 34.Re7 Kd6 35.Rh7 a5+=) 34.Re4 (34.Ne4 Rg4 35.Kf3 Rf4 36.Ke3 Rh4+–) 34...h4 (34...Rf5 35.Rd4 c5 36.bc5 Rc5 37.Ne4+/–) 35.Kh3+/– Kd6 (35...Rf6!?+/–) 36.Rf4+– gf4 37.Kh4 c5 38.bc5 Kc5 39.Kg4 a5 40.Kf4 a4 41.Ke3 Kd5 42.Kd3 Kc5? (42...b4 43.Nf3+–) 43.Kc3 (better is 43.Ne4 Kd5 44.Nc3 Ke5 45.Nb5+–) 43...b4 44.Kb2 b3?? (better is 44...Kd4+–) 45.Ka3 Kd4 46.Ka4 b2 47.Kb3 b1Q 48.Nb1 Ke5 49.Kc3 Kf5 50.Kd3 Kg4 51.Nd2 Kh3 52.Nf1 Kh4 53.Ke3 Kg4 54.Kf2 Kh3 55.Kg1 Kh4 56.Ne3 Kh3 57.Kh1 Kh4 58.Kg2 Kg5 59.Kg3 Kg6 60.h4 Kh5 61.Nf5 Kg6 62.Kg4 Kh7 63.h5 Kh8 64.Kg5 Kh7 65.h6 Kh8 66.Kg6 Kg8 67.Nd6 Kh8 (67...Kf8 68.h7 Ke7 69.Nf5 Ke6 70.h8Q Kd5 71.Qd4 Kc6 72.Qc4 Kb7 73.Nd6 Kb6 74.Qc3 Ka7 75.Qc6 Kb8 76.Qb7) 68.Nf7 Kg8 69.h7 Kf8 70.h8Q Ke7 71.Qd8 Ke6 72.Qd6 1–0. The Monopoly Guy – MARYMARY, ChessWorld.net, 2011.

4.Qc2? Nf6??

5.Bb2+= Qb6 6.Nf3 (6.e4 d6+=) 6...d6 7.e3 Bg4 8.Be2 Nbd7 9.d4 d5 (9...e6 10.c5 Qc7 11.Nbd2+=) 10.Nbd2 e6 11.0–0 (11.Bd3 Qc7+=) 11...Be7 12.Bd3 0–0 (12...Rd8 13.Ne5+=) 13.Ne5+/– g6 (13...h6 14.f3 Bh5 15.g4+/–) 14.Rae1 (14.c5!? Qc7 15.f3+– (15.Ng4?! Ng4 16.Nf3 Bf6+=)) 14...Bf5+= 15.Nd7 (15.Bf5 gf5 16.Nd7 Nd7+=) 15...Nd7 16.e4 (16.Bf5 gf5 17.c5 Qb5+=) 16...de4 17.Be4 (17.Ne4 a5+=) 17...Bf6 (17...Be4 18.Ne4 a5 19.c5+=) 18.Re3 (18.Bf5 gf5 19.Nb3 Rad8+=) 18...a5 (18...Bd4? 19.Bd4 Qd4 20.Bf5+–) 19.Rb3 (19.Bf5 gf5 20.ba5 Qa5 21.Rg3 Kh8+=) 19...Qc7 (19...ab4 20.Bf5 gf5 21.Rb4+=) 20.Bf5 ef5 21.c5 (21.ba5 Ra5 22.Re1 Rfa8+=) 21...a4 (21...ab4 22.Rb4 b6 23.cb6 Nb6 24.Rc1+=) 22.Rd3 Rfd8 (22...Rfe8 23.Nc4+/–) 23.Nc4 (23.Rd1 f4+/–) 23...Bg7 (23...b5 24.Nd6+/–) 24.Rfd1 (24.d5 cd5 25.Rd5 Nf6 26.Rd8 Rd8 27.Bf6 Bf6 28.Qa4 h6+–) 24...Nf6 (24...b5 25.Nd6 Nf6 26.d5 Nd5 27.Bg7 Kg7 28.Nb5 cb5 29.Qd2+/–) 25.Nb6 Ra6 (25...Rab8 26.Na4 Nd5 27.Nc3+/–) 26.Na4 (26.d5 Nd5 27.Bg7 Kg7+–) 26...Nd5 (26...Ng4 27.g3+/–) 27.Nc3 Nf4 28.Re3 h5 (28...Raa8 29.Rde1+/–) 29.Ne2 (29.Qb3 Raa8+/–) 29...Nd5 30.Red3 Raa8 31.Qb3 (31.Bc1 Qe7+/–) 31...Qe7 (31...Rd7 32.Nc3+/–) 32.Nc3 (32.Re1 Re8+/–) 32...Nf4 33.Re3 Qg5 The mate threat is Qxg2 34.Rg3 Qf6 The pressure on the backward pawn d4 grows (34...Qe7 35.d5 cd5 36.Bc1+= (36.Nd5?? Rd5 37.Bg7 Ne2 38.Kh1 Ng3 39.hg3 Rd1 40.Qd1 Kg7–+)) 35.Qc4 (35.Bc1 h4 36.Rf3 Ne6+=) 35...Rd4 Black gets strong play along the open d–file 36.Qf1 Rd1 (36...Qe6 37.Re1 Qc4 38.Qc4 Rc4 39.Rge3=) 37.Nd1 Qe6 38.Re3 Qd5 (38...Qa2 39.Bg7 Kg7 40.Qe1=) 39.Nc3 (39.Bg7!? Kg7 40.Nb2+=) 39...Qd2= 40.Qa1 (better is 40.Bc1 Qc2 41.Ne2=) 40...Rd8–+ 41.h3 Bd4 (41...Qc2 42.Kh2–+) 42.Nd1 Be3 43.Ne3 Nd3 44.Bf6 (44.Bh8 Qf2 45.Kh1 Qe1 46.Qe1 Ne1 47.Be5–+) 44...Qf2 45.Kh2 (45.Kh1 Re8 (45...Qe3?! 46.Bd8 f4 47.Qf1–+) 46.Bh8 Qe1 47.Qe1 Ne1–+) 45...Re8 (45...Qf4 46.Kh1 Rd7 47.Bh8 Nf2 48.Kg1 Nh3 49.Kh1–+) 46.Bh8 Threatening mate... how? 46...Qf4 47.g3 Qh6 48.Qd4 (48.Bd4 h4 49.Qf1 hg3 50.Kg3 Re3 51.Kh2–+) 48...Qh8 (48...Re3 49.h4 Re2 50.Kh3 Nf2 51.Kg2 Ne4 52.Kf3 Ra2 53.Qg7 Qg7 54.Bg7 Ra3 55.Ke2 Kg7–+) 49.Qd3 h4 (49...Qe5 50.Nf1–+) 50.Nc4 (50.Ng2 Qe5–+) 50...hg3 51.Kg3 (51.Kg2 f4–+) 51...Qh5 (51...f4 52.Kg2 Qh4 53.Qd1 Qg3 54.Kf1 f3 55.Ne3 Re3 56.Qd8 Kh7 57.Qh4 Qh4 58.Kg1 Re1 59.Kh2 Qf2) 52.Qd4 (52.Kf2–+) 52...Qe2 53.a4 (53.Qf4 Qd3 54.Qf3 Qc4–+) 53...g5 0–1. Wesslen,Ulf (2115) – Tetenkina,Irina (2085), Manhem op, 1999. (Marek's comment: "Manhem" is a chess club in Gothenburg, Sweden. In some game collections somebody changed this to "Mannheim", which is of course very very wrong).

5.Bb2+= Qg4 6.h3 Qg6 7.Qg6 hg6 8.Nc3 +=.

5.Nf3?? Qa1 6.Bb2 Qa2 7.e3 Na6 8.Nc3 Nb4.

5.Nf3?? Qb6?? 6.c5 (6.e4 d6+=) 6...Qc7 7.Bb2 g6 (7...d6 8.cd6 Qd6 9.e4+=) 8.Be5 (8.Nc3 d5+=) 8...Qd8 9.Qb2 (9.Bf6 ef6 10.d4 d6+=) 9...Bg7 10.e3 (10.Qd4 b5+=) 10...0–0 (10...d6 11.Bf6 Bf6 12.d4=) 11.h4 (11.Qd4 b6+=) 11...Ne8 (better is 11...d6!? 12.Bf6 Bf6=) 12.h5+/– Be5 13.Qe5 f6 (13...d6 14.Qh2 Bf5 15.hg6 Bg6 16.d4+/–) 14.Qh2 (14.Bc4 Kg7 15.Qf4 g5 16.Ng5 d5 17.cd6 e5+/–) 14...g5 15.Bc4 (15.d4 d5+=) 15...e6 16.Nc3 h6 (16...b5 17.Bb3+/–) 17.Nd4 (17.d4 d5 18.Be2 Ng7+=) 17...Kg7 (17...b6 18.Nf5 d5 19.cd6+= (worse is 19.Nh6 Kh7–/+)) 18.f4+/– b6 (18...b5 19.Bb3+/–) 19.Rf1 (19.0–0 bc5 20.bc5 Ba6 21.Ba6 Na6 22.fg5 hg5+/–) 19...bc5 20.bc5 Ba6 21.Be2 (21.Ba6 Na6 22.fg5 fg5 23.Qe5 Nf6+/–) 21...Be2 22.Ke2 (22.Nde2 f5+=) 22...Na6 (22...f5 23.fg5 Qg5 24.g4+/–) 23.fg5+/– hg5 (23...fg5 24.Rf8 Kf8 25.Qe5+–) 24.Ne4 Qb8 (24...Qe7 25.Rac1+/–) 25.h6 (25.Qb8!? Rb8 26.g4+/–) 25...Kg6+= 26.Ng3 (26.Qh3 Qe5 27.d3 Nc5=) 26...Kh7 (26...Nc5 27.h7 Rh8 28.Rab1=) 27.Nf3 (27.Rac1!?+=) 27...Qb5= 28.Ke1 Nec7 (28...Qc5!? 29.Ne4 Qe7+=) 29.Ne4+= Nd5? (29...Qb2 30.Ke2 Qb5 31.d3 Qb2 32.Nfd2 Nb5+–) 30.Neg5?? (30.Qd6 Rad8 31.Neg5 fg5 32.Ng5 Kg6 33.Rf8+–) 30...fg5= 31.Qe5 Do you see the mate threat? 31...Rg8?? (better is 31...Rf6 32.Ng5 Kg6+=) 32.Ng5 Kh6 (32...Kg6 33.Ne6! Qf1 34.Kf1 de6 35.Qe6 Kh7 36.Qd7 Kh8 37.Qc6 Nac7+–) 33.Nf7 1–0. Mohring,Norbert – Weber, Oberjoch op, 1994.

4.Nc3 Qc4

5.e4 Qe6 6.d4 d5 7.e5 f6 8.f4 Qg4 (8...g6 9.Be2+=) 9.Nge2 (9.Be2 Qd7= (9...Qg2? 10.Bf3 Bg4 11.Bg2 Bd1 12.Kd1+–)) 9...Nd7 10.h3 Qh4 11.g3 Qh5 12.Be3? (better is 12.Qd3!?+=) 12...Qf3–+ 13.Qd3?? (better is 13.Rg1 Qe3 14.g4 Ne5 15.de5–+) 13...Qh1 14.Ng1 (14.e6 Nb6 15.f5 Qf3–+) 14...Qh2 15.Bf2 Nh6 (better is 15...Nb6!? 16.b5–+) 16.Qf3 fe5 (better is 16...g5!? 17.fg5 fg5 18.Ra2–+) 17.de5 g5 18.Qh5 Kd8 19.Nf3 (19.Qe2 Qh1 20.fg5 Nf7–+) 19...Qh1 20.Ng5 Threatening mate... how? 20...Ne5 (20...Nb6 21.0–0–0–+) 21.0–0–0 (better is 21.fe5 Bg7 22.0–0–0–+) 21...Bg4?? (better is 21...Ng6 22.Bb5 Qg2–+) 22.Ne6 Be6 23.Qe5 A double attack 23...Rg8 24.Ba6 Qh3 (24...ba6 25.Rh1) 25.Bb7 Bg7 26.Qe3 Rb8 (26...Rc8!? 27.Ne2–+) 27.Qa7 Rb7 (27...Bc3?! 28.Qb8 Kd7 29.Bc6 Kc6 30.Qb6 Kd7 31.Qb5 Kc7 32.Qb6 Kc8 33.Qc6 Kb8 34.Qb6 Kc8 35.Qc6 Kb8 36.Qb6 Kc8=) 28.Qb7 Bc3 (better is 28...Ke8–+) 29.Qc6–/+ The mate threat is Bb6 29...d4 (better is 29...Bd7 30.Qa8 Bc8 31.Qd5 Ke8 32.Qc6 Bd7 33.Qc3 Qe6–/+) 30.Bd4= Do you see the mate threat? 30...Bd7 31.Bc3 (31.Qa8 Kc7 32.Qa7 Kd8 33.Qa8 Kc7 34.Qa7 Kd8 35.Qa8=) 31...Ke8+= (31...Rg3 32.Qa8 Kc7 33.Be5 Kb6 34.Qa5 Kb7 35.b5 Rc3 36.Bc3 (worse is 36.Qc3 Qc3 37.Bc3 Bb5+–) 36...Qe3 37.Rd2+–) 32.Rd7 Qd7 Threatening mate... how? 33.Qh6 Rg3 Threatening mate: Rxc3 34.Qh5 Kf8 35.Qe5 Qc8 (35...Qd3 36.Kb2–/+) 36.Kb2 (36.Qh8 Rg8 37.Qd4+=) 36...Rg2 (better is 36...Qc4 37.Qf5 Kg8–/+) 37.Kb3+= Qg4 38.Qd4 (38.Qh8 Qg8 39.Qg8 Rg8=) 38...Qe6 39.Qc4 Qc4 40.Kc4 Ke8 41.a4 (41.b5 Kd7=) 41...Kd7 (41...h5 42.a5 Kd7 43.a6–/+) 42.Kd5 e6 (42...h5 43.Be1+=) 43.Ke4 Re2 (43...h5 44.Bf6–/+) 44.Kd3 Rh2 45.Ke4? (better is 45.a5!?+=) 45...h5–+ 46.f5 (46.Bf6 Ra2 47.Kd4 Ra4 48.Kc5–+) 46...ef5 (better is 46...Rc2 47.Bd4 h4–+) 47.Kf5–/+ Rg2 (better is 47...h4 48.Kg4 h3+=) 48.Kf4? (better is 48.Be1+=) 48...h4–+ 49.Be1 (49.Be5 Re2 50.Bb8 h3–+) 49...h3 50.Kf3 Ra2 (50...Ra2 51.Bg3 h2 52.Bh2 Rh2–+) 0–1. Lieber,Karl Heinz – Diener,Rudolf, corr DDR, 1982.

5.e4 Qe6 6.d4 d5 7.Nf3 a5 =.

5.e4 Qe6 6.Nh3 d5 7.Nf4 (7.d4 de4 8.Ng5 Qg6+=) 7...Qf6 (7...Qd6 8.d4 e5 9.Nfe2+=) 8.d4 (8.Nh5 Qd6+=) 8...e5 9.Nh5 (9.Nfe2 de4 10.Ne4 Qg6+=) 9...Qe7 10.Be3. DeMaddin – Curlywurly, ChessWorld.net, 2003.

5.Nf3 a5 6.e3 (6.e4 Qe6 7.ba5 Nf6=) 6...Qe6 7.Na4 (7.b5 cb5 8.Bb2 b4 9.ab4 Qb6=) 7...d6 (better is 7...ab4!? 8.ab4 Qg4=+) 8.Nb6= Ra7 (8...Qf6 9.d4 (9.Na8?! Qa1 10.Nb6 Bg4=) 9...Ra7 10.Nc8+–) 9.Nd4 Qg4 10.f3 (10.Nc8?! Qc8 11.b5 e5=+) 10...Qh5 11.Nc8 Ra8 12.Nb6 Ra7 13.b5 (13.ba5 e5 14.Nb3 d5+–) 13...e5 14.Ne2 (14.Nc8 Ra8 15.Nb6 Ra7=) 14...Qh4 15.Ng3 Qd8 16.Na4 Nd7 (16...d5 17.d4 Bd6 18.Nf5+–) 17.Bb2 cb5 (17...d5 18.b6 Ra8 19.d4+–) 18.Bb5 Ngf6 19.d4 Nd5 20.de5 Ne3 21.Qd2 Qg5 22.Bd4 b6 (22...Ng2 23.Qg2 b6 24.Nb6 de5 25.Nd7 Rd7 26.Bb6+–) 23.Qe3 Qe3 24.Be3 (24…de5 25.Nb6+–) 1–0. Pommerel,Wim – Petrini, CIF–TT–94–0013A, 1994.

5.Nf3 Nf6 6.e4 Qe6 7.Nd4 =.

5.e3 Qe6

6.Bb2 d5 7.Nf3 Qd6 8.Be2 Nf6 9.d4 Bf5 10.0–0 Nbd7 11.Rc1 e6 12.h3 Be7 13.Re1 (13.Nh4 Be4=+) 13...a5 (13...0–0 14.Nh4–/+) 14.b5=+ 0–0 15.Nh4 Be4 16.bc6 (16.f3 Qg3=+) 16...bc6–/+ 17.Nf3 Qb8 (17...Rfb8 18.Qd2–/+) 18.Na4 (18.Qd2 c5=+) 18...Nb6–/+ 19.Ba1 (19.Nc5!? Nc4 20.Bc4 Qb2 21.Qb3–/+) 19...Ba3–+ 20.Rc6 Na4 21.Qa4 Bd6 (21...Qb4 22.Qd1–+) 22.Rec1 (22.Bc3 Rc8–/+) 22...Rd8 (22...Qb4 23.Qb4 Bb4 24.Ng5–/+) 23.Bc3 Bf3 24.gf3 Rc8 25.Ba5 Rc6 26.Rc6 Qb1 27.Kg2 Bf8 28.Ba6 Qg6 29.Kh2 Qh5 30.f4 (30.Kg2 Nd7=+) 30...Ra6 31.Ra6 Qe2 32.Bc7?? (better is 32.Ra8 Qf2 33.Kh1 Qf3 34.Kh2 Qe2 35.Kh1 Qf1 36.Kh2 Qf2 37.Kh1=) 32...Qf2–+ 33.Kh1 Ne4 34.f5 Qe1 (35.Kg2 Qd2 36.Kh1 Qc1 37.Kg2 Qc7–+; 34...ef5?! 35.Qa1–+; 34...Qf5?! 35.Bf4 g5 36.Be5–+; 34...Qe3?! 35.Qc2 Qh3 36.Kg1 Qf5 37.Ra8–+) 0–1. Sternik,Ryszard – Seack,Ingo, corr SOK–92–88, 1992.

6.d4 d5 =.

6.Nf3 Nf6 7.Nd4 Qg4 8.Qb3 (8.Qg4 Ng4 9.Nf3 b5+=) 8...d5 9.h3 Qd7 10.b5 (10.Nf3!?–/+) 10...e5 11.bc6 Nc6 12.Nc6 bc6 (12...Qc6?? 13.Bb5 a6 14.Bc6 bc6 15.Qb6+–) 13.Be2 Bd6 14.Nb5 Rb8 (14...cb5 15.Bb5 0–0 16.Bd7 Bd7 17.d4+–) 15.Nd6 Qd6 16.Qa4 Qc5 (16...0–0 17.d4–/+) 17.0–0+= 0–0 18.Ra2 Bf5 19.Bb2 Nd7 20.Rc1 (20.d4!? Qc2 21.Qc2 Bc2 22.Bc3 ed4 23.Bd4–/+) 20...Rb2! 21.Rc5 (21.Rb2 Qc1 Double attack (21...Qc1 Decoy; 21...Qc1 Remove defender)) 21...Nc5 (worse is 21...Ra2 22.Rc6 Nf6 23.Qa5+/–) 22.Qc6 Ra2 23.Qc5 Rd2 24.Bf3 Rc8 25.Qa7 Be6 26.Qb7 Rc1 (26...h6 27.Bg4 Rc1 28.Kh2 Rf2 29.Qb8 Rc8 30.Qe5 Bg4 31.Qg3–+) 27.Kh2+= e4 (worse is 27...Rf2 28.Bd5 h6 29.Kg3=) 28.Bg4 Bg4 29.hg4 h6 30.Qb8 Kh7 31.Qf4 (31.Kg3 f6+=) 31...f6 (31...Rc6 32.Qf5 Kg8 33.Kg3–/+) 32.Qf5+= Kh8 33.a4 Rcc2 (33...Ra2 34.Kg3 Ra4 35.g5 fg5 36.Qf8 Kh7 37.Qf5 Kg8 38.Qe6 Kf8 39.Qd6 Ke8 40.Qe6 Kd8 41.Qg8 Kd7 42.Qg7 Ke8 43.Qe5 Kf8 44.Qd6 Ke8 45.Qd5+/–) 34.a5 (34.Kg3 Rc5+=) 34...Rc5 (34...Rf2 35.Qd5 Rg2 36.Kh3 Rh2 37.Kg3 Rcg2 38.Kf4 h5 39.Ke4 Rg4 40.Kf3 Rg5 41.Qa8 Kh7–+) 35.g5 hg5 36.Qh3 Kg8 37.Qe6 Kh7 38.Qe8 ½–½. Fournier,Frederic – Mephisto Mondial, Match Thematique, 2000.

6.Bb2 Nf6

7.Nf3 d5

8.d4 a5 A) 9.Be2 A1) 9...Qd6 10.b5 (10.ba5 Ra5 11.0–0 Nbd7 12.Qb3 e6 13.a4 Qc7 14.Ba3) 10...Bf5 11.0–0 Nbd7 12.Nh4 Bg6 13.bc6 bc6 14.Ng6; A2) 9...Nbd7 10.b5 (10.0–0 ab4 11.ab4 Ra1 12.Qa1 g6 13.b5 Bh6 14.bc6) 10...Nb6 11.bc6 bc6 12.Ne5 Nfd7 13.Nf3 Nf6 14.0–0; A3) 9...ab4 10.ab4 Ra1 11.Qa1 Qd6 12.Qa8 Nfd7 13.b5 Nb6 14.Qa5; B) 9.b5 B1) 9...Nbd7 10.bc6 (10.Be2 Nb6 11.bc6 bc6 12.0–0 Qd6 13.Ne5 Nbd7 14.Qc2) 10...bc6 11.Bd3 c5 12.0–0 c4 13.Bc2 Rb8 14.Rb1; B2) 9...Qd6 10.Bd3 (10.Be2 g6 11.0–0 Bg7 12.a4 0–0 13.Ba3 Qd8 14.Qb3) 10...Nbd7 11.bc6 bc6 12.0–0 Ba6 13.Rb1 Bd3 14.Qd3; B3) 9...g6 10.Bd3 (10.h3 Bh6 11.Be2 0–0 12.0–0 cb5 13.Nb5 Qb6 14.Rc1) 10...Bh6 11.0–0 0–0 12.Qe2 Nbd7 13.bc6 bc6 14.h4; C) 9.Qa4 C1) 9...Qd6 10.b5 (10.ba5 Nbd7 11.Bd3 Nb6 12.Qb3 Nc4 13.Bc4 dc4 14.Qc4) 10...Nbd7 11.bc6 bc6 12.Qc2 g6 13.Bd3 c5 14.0–0; C2) 9...Qf5 10.b5 (10.Be2 b5 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 Nbd7 14.0–0) 10...e6 11.Rd1 Bd6 12.Bd3 Qh5 13.0–0 0–0 14.h3; C3) 9...Nbd7 10.Bd3 (10.Be2 Nb6 11.Qb3 ab4 12.Qb4 Nc4 13.Bc4 dc4 14.Ne5) 10...Nb6 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 g6 14.0–0; D) 9.ba5 D1) 9...Nbd7 10.a6 (10.Qb3 Ra5 11.Bd3 c5 12.Bb5 c4 13.Qb4 Qb6 14.Ba4) 10...b6 11.Rc1 b5 12.a7 Nb6 13.Ne5 Nc4 14.Bc4; D2) 9...Qd6 10.Bd3 (10.Qb3 Ra5 11.Bd3 Nbd7 12.0–0 e6 13.a4 Qb8 14.h3) 10...Ra5 11.0–0 b6 12.a4 Nbd7 13.Qe2 Bb7 14.h3; D3) 9...Ra5 10.Bd3 (10.Qd2 g6 11.Bd3 Bh6 12.0–0 b6 13.Ne5 Nbd7 14.f4) 10...g6 11.0–0 Bh6 12.Ne2 Ne4 13.Qc2 0–0 14.Nd2.

8.d4 Na6 A) 9.Bd3 A1) 9...Bd7 10.Ne5 (10.0–0 g6 11.Ng5 Qg4 12.Qg4 Ng4 13.b5 Nc7 14.bc6) 10...g6 11.Nd7 Nd7 12.Qf3 Bg7 13.b5 Nc7 14.bc6; A2) 9...Nc7 10.0–0 (10.Na4 Qd6 11.0–0 g6 12.Ne5 Bg7 13.Rc1 0–0 14.h3) 10...g6 11.Ne5 Bg7 12.f4 Qd6 13.b5 0–0 14.bc6; A3) 9...g6 10.0–0 (10.b5 cb5 11.0–0 Bd7 12.Ne5 b4 13.Nd7 Nd7 14.Nb5) 10...Bh6 11.b5 cb5 12.Nb5 Bd7 13.Ne5 0–0 14.Rc1; B) 9.b5 B1) 9...cb5 10.Bb5 (10.Ne5 b4 11.Qa4 Bd7 12.Nd7 Nd7 13.ab4 Qd6 14.Bb5) 10...Bd7 11.Bd7 Nd7 12.0–0 Qb6 13.Rb1 Nc7 14.Bc1; B2) 9...Nb8 10.Bd3 (10.Be2 cb5 11.Bb5 Nc6 12.0–0 g6 13.Bd3 Bd7 14.Ng5) 10...g6 11.0–0 Bg7 12.Qb3 0–0 13.Ng5 Qd6 14.g3; B3) 9...Nc7 10.bc6 (10.Rc1 Qd6 11.Bd3 g6 12.0–0 Bg7 13.bc6 bc6 14.Na4) 10...bc6 11.Bd3 g6 12.Qa4 Bg7 13.0–0 0–0 14.Rab1; C) 9.Be2 C1) 9...Bd7 10.Ne5 (10.0–0 g6 11.b5 cb5 12.Ne5 Bg7 13.Nd7 Nd7 14.Qb3) 10...g6 11.Na4 b5 12.0–0 Bg7 13.Nc3 0–0 14.Qd3; C2) 9...Qd6 10.Qb3 (10.0–0 Bf5 11.b5 Nc7 12.Qb3 h5 13.h3 Ne6 14.Qa4) 10...Bf5 11.0–0 Nc7 12.b5 h5 13.h3 Ne6 14.Qa4; C3) 9...g6 10.b5 (10.0–0 Bh6 11.Ne5 0–0 12.Qc2 Nb8 13.b5 c5 14.Nd3) 10...cb5 11.0–0 Bh6 12.Bb5 Bd7 13.Bd7 Nd7 14.Qb3; D) 9.Qa4 D1) 9...b5 10.Qb3 (10.Qc2 g6 11.Bd3 Bh6 12.0–0 0–0 13.Ne2 Bb7 14.Nf4) 10...g6 11.Bd3 Bg7 12.0–0 Qd6 13.Ne5 0–0 14.f4; D2) 9...Qd6 10.Bd3 (10.Be2 Ne4 11.0–0 Nc3 12.Bc3 Nc7 13.Rac1 Bf5 14.Bb2) 10...Nc7 11.0–0 g6 12.b5 Bf5 13.Bf5 gf5 14.Ne5; D3) 9...g6 10.b5 (10.Bd3 Bg7 11.0–0 0–0 12.h3 Nc7 13.Ne5 Nd7 14.Nf3) 10...Nc7 11.Ne5 Bd7 12.Bd3 c5 13.0–0 c4 14.Be2.

8.d4 Qd6 A) 9.Be2 A1) 9...Bf5 10.Nh4 (10.0–0 Nbd7 11.Nh4 Be6 12.Nf3 Bf5 13.Qd2 g6 14.b5) 10...Bg6 11.0–0 Nbd7 12.h3 0–0–0 13.b5 c5 14.Qd2; A2) 9...Nbd7 10.b5 (10.0–0 g6 11.Qc2 Bg7 12.h3 0–0 13.Ng5 Nb6 14.Qb3) 10...g6 11.0–0 Bg7 12.Rc1 0–0 13.Qc2 Rb8 14.Na4; A3) 9...g6 10.0–0 (10.h3 Bg7 11.0–0 0–0 12.Qb3 Nbd7 13.Bd3 b6 14.a4) 10...Bg7 11.Nd2 0–0 12.e4 de4 13.Nde4 Qc7 14.Nf6; B) 9.h3 B1) 9...g6 10.Bd3 (10.Rc1 Nbd7 11.Bd3 Bg7 12.0–0 0–0 13.Ne2 a5 14.b5) 10...Nbd7 11.Rc1 Bg7 12.Qb3 0–0 13.0–0 Nb6 14.Ne5; B2) 9...Bf5 10.Nh4 (10.Bd3 g6 11.0–0 Nbd7 12.Re1 Bg7 13.Bf5 gf5 14.b5) 10...Be4 11.Ne4 Ne4 12.Bd3 Nd7 13.0–0 g6 14.Be4; B3) 9...Nbd7 10.Bd3 (10.Qb3 g6 11.Bd3 Bg7 12.0–0 0–0 13.Rac1 a5 14.ba5) 10...g6 11.0–0 Bg7 12.Qb3 0–0 13.Rfd1 b6 14.a4; C) 9.Qb3 C1) 9...Nbd7 10.Bd3 (10.Be2 g6 11.Ng5 Bh6 12.Nf3 0–0 13.0–0 Re8 14.Rfe1) 10...g6 11.h3 Bg7 12.0–0 0–0 13.Rfd1 b6 14.a4; C2) 9...Bf5 10.Nh4 (10.Be2 Nbd7 11.0–0 g6 12.h3 Bg7 13.g4 Be6 14.Ng5) 10...Bg6 11.Be2 Nbd7 12.0–0 0–0–0 13.Rad1 Kb8 14.h3; C3) 9...g6 10.Bd3 (10.Be2 Bg7 11.0–0 0–0 12.h3 Bf5 13.g4 Be6 14.Ng5) 10...Nbd7 11.a4 Bg7 12.0–0 0–0 13.a5 Re8 14.h3; D) 9.Bd3 D1) 9...g6 10.h3 (10.0–0 Nbd7 11.Ne2 Bg7 12.Qc2 0–0 13.Nf4 Ne4 14.Rae1) 10...Nbd7 11.0–0 Bg7 12.Qb3 0–0 13.Rfe1 a5 14.Rac1; D2) 9...a5 10.b5 (10.ba5 Ra5 11.0–0 Nbd7 12.a4 b6 13.Qc2 Bb7 14.Ba3) 10...Nbd7 11.0–0 c5 12.a4 c4 13.Ba3 Qc7 14.Bc2; D3) 9...Nbd7 10.0–0 (10.Qc2 g6 11.0–0 Bg7 12.Ne2 0–0 13.Rfc1 Nh5 14.g4) 10...g6 11.Nd2 Bg7 12.e4 de4 13.Nce4 Qc7 14.Qf3.

8.d4 Nbd7 A) 9.Be2 A1) 9...Nb6 10.0–0 (10.Qb3 Nc4 11.0–0 g6 12.Na4 Ne4 13.Nc5 Nc5 14.dc5) 10...g6 11.b5 Nc4 12.Bc4 dc4 13.bc6 bc6 14.Qa4; A2) 9...h5 10.0–0 (10.Bd3 g6 11.0–0 Bh6 12.h3 0–0 13.Re1 Nb6 14.Qe2) 10...Nb6 11.h3 Qd6 12.Qb3 Bf5 13.b5 g5 14.Ng5; A3) 9...g6 10.Ng5 (10.0–0 Bh6 11.Bd3 0–0 12.Re1 Nb6 13.Ne5 Nc4 14.Bc4) 10...Qf5 11.h4 Nb6 12.Bd3 Qg4 13.Be2 Qf5 14.Bd3; B) 9.g3 B1) 9...g6 10.Bd3 (10.Bg2 Bg7 11.0–0 0–0 12.Qc2 Nb6 13.Ne5 Ng4 14.Nd3) 10...Bh6 11.0–0 0–0 12.Qc2 Nb6 13.Ne5 Nfd7 14.Ne2; B2) 9...Qd6 10.Bd3 (10.Bg2 h5 11.0–0 Nb6 12.Ne5 h4 13.e4 h3 14.Bf3) 10...g6 11.0–0 Bg7 12.Qc2 0–0 13.Ne2 Ne4 14.Be4; B3) 9...Nb6 10.Ne5 (10.Bd3 Nc4 11.Qe2 Nb2 12.Qb2 Qh3 13.Bf1 Qh5 14.Bg2) 10...h5 11.Qe2 h4 12.Bg2 Nbd7 13.Nd3 hg3 14.hg3; C) 9.Qc2 C1) 9...Qg4 10.h3 (10.b5 e6 11.Rg1 c5 12.h3 Qg6 13.Qg6 hg6 14.Kd2) 10...Qg6 11.0–0–0 a5 12.b5 e6 13.g4 Qc2 14.Kc2 Bd6; C2) 9...a5 10.b5 (10.ba5 Ra5 11.Bd3 Nb6 12.0–0 Nc4 13.Qe2 b5 14.h3) 10...Qg4 11.Rc1 e6 12.Na4 cb5 13.h3 Qg6 14.Qg6; C3) 9...g6 10.Bd3 (10.a4 Bh6 11.a5 0–0 12.Bd3 Qd6 13.0–0 Re8 14.b5) 10...Bh6 11.Ne2 0–0 12.0–0 Ne4 13.Nf4 Qd6 14.Ne5; D) 9.Bd3 D1) 9...Qd6 10.0–0 (10.Qd2 g6 11.0–0 Bg7 12.Qc2 0–0 13.Ne2 Ne4 14.Be4) 10...g6 11.Qc2 Bg7 12.Ne2 0–0 13.Nf4 Ne4 14.h3; D2) 9...Nb6 10.0–0 (10.h3 g6 11.0–0 Bg7 12.Qe2 0–0 13.b5 Bd7 14.bc6) 10...g6 11.Ne5 Nfd7 12.Ne2 Bg7 13.Nf3 Qd6 14.Qc2; D3) 9...g6 10.Ng5 (10.h4 Bg7 11.0–0 Qd6 12.b5 c5 13.e4 de4 14.Ne4) 10...Qd6 11.f4 h6 12.Nf3 g5 13.Ne5 a5 14.ba5.

8.d4 g6

9.Qb3 A) 9...Nbd7 10.Bd3 (10.Rd1 Bh6 11.Bd3 0–0 12.0–0 a5 13.h4 ab4 14.ab4) 10...Bh6 11.0–0 0–0 12.h4 Qd6 13.a4 Bg7 14.Ba3; B) 9...Bg7 10.Bd3 (10.h3 0–0 11.Bd3 Nbd7 12.0–0 Qd6 13.Rfe1 b6 14.a4) 10...Nbd7 11.0–0 0–0 12.a4 a5 13.Ba3 ab4 14.Bb4; C) 9...Bh6 10.h4 (10.Bd3 0–0 11.0–0 Nbd7 12.Rfe1 Nb6 13.Ne2 Ne4 14.Nf4) 10...Nbd7 11.Bd3 0–0 12.0–0 Qd6 13.a4 Ng4 14.e4.

9.Qd2 A) 9...Nbd7 10.Ng5 (10.b5 Bh6 11.Be2 0–0 12.0–0 c5 13.h4 c4 14.Ng5) 10...Qd6 11.Bd3 Bg7 12.0–0 0–0 13.h3 e5 14.Be2; B) 9...Bg7 10.Be2 (10.Bd3 Nbd7 11.0–0 0–0 12.h3 Qd6 13.Qc2 Nb6 14.Ne2) 10...0–0 11.0–0 Qd6 12.Bd3 Nbd7 13.Qe2 b6 14.h3; C) 9...Bh6 10.Bd3 (10.h4 0–0 11.Bd3 Nbd7 12.Qe2 Nb6 13.0–0 Qg4 14.b5) 10...Nbd7 11.0–0 0–0 12.Qe2 b6 13.h4 Qg4 14.g3.

9.Bd3 A) 9...Bg7 10.0–0 (10.Ne2 Nh5 11.0–0 0–0 12.h3 Nd7 13.g4 Nhf6 14.Nf4) 10...0–0 11.Ne2 Nh5 12.h3 Nd7 13.Qc2 Qf6 14.a4; B) 9...Nbd7 10.0–0 (10.Ng5 Qd6 11.0–0 Bh6 12.f4 0–0 13.e4 de4 14.Nce4) 10...Bh6 11.Qc2 0–0 12.Rfe1 Qd6 13.Ne2 a5 14.Bc3; C) 9...Bh6 10.0–0 (10.h3 Nbd7 11.0–0 0–0 12.Re1 Nb6 13.Qe2 Nc4 14.Bc4) 10...0–0 11.Qb3 Nbd7 12.h3 a5 13.Rfe1 b6 14.e4.

8.Be2 Nbd7 9.0–0 h6 10.Qc2 g5 11.Nd4 Qe5 12.f4 Qc7 13.f5 Bg7 14.e4 0–0 15.ed5 cd5 16.Rac1 Qb6 17.Na4 Qd8 18.Bf3 Nb6 19.Nb6 ab6 20.Rfe1 Bd7 21.Qc7 Rb8 22.Qd8 Rfd8 23.Re7 Ba4 24.Rcc7 Be8 25.Rb7 g4 26.Be2 h5 27.Bb5 Bf8 28.Rb8 Rb8 29.Ra7 Ne4 30.d3 Nd6 31.Be8 Ne8 0–1. emeryt85 – inspcluzzooo, kurnik, 2014.

9.Be2 Nbd7 10.Qd3 Bh6 11.0–0 0–0 12.h3 a5 13.Qc2 b6 14.Rfe1.

9.Be2 Nbd7 10.Ng5 Qf5 11.h4 Nb6 12.Bd3 Qg4 13.Be2 Qf5 14.Bd3.

9.Be2 Bg7 10.0–0 (10.Qc2 0–0 11.0–0 Nbd7 12.Ng5 Qd6 13.Rfd1 Nb6 14.e4) 10...0–0 11.Ng5 Qf5 12.f4 Na6 13.Bd3 Qg4 14.Be2.

9.Be2 Bh6 10.0–0 (10.Qc2 Nbd7 11.0–0 0–0 12.h3 b6 13.h4 Bb7 14.Ng5) 10...0–0 11.b5 (11.Bd3 Nbd7 12.Qe2 b6 13.h4 Qg4 14.g3) 11...cb5 (11...Bd7+= 12.a4 Rc8 13.Ne5 c5 14.h4; 11...Nbd7 12.bc6 bc6 13.Rb1 Rb8 14.Qa4) 12.Qb3 (12.Nb5!? Qb6 13.a4+= (13.Rb1 Nc6 14.Bd3) 13...Nc6 14.Qe1) 12...a6–/+ 13.a4 ba4 14.Na4 Nbd7 15.Rfc1 (15.Nc5 Qb6–/+) 15...b6 16.Nc3 (16.Ne5 Bb7 17.Rc7–/+) 16...Rb8 (16...Bb7!?–+) 17.Ba6–/+ Ba6 18.Ra6 Rfc8 19.Na4 (19.Ra7 Ra8 20.Rca1 Ra7 21.Ra7 Qf5+=) 19...Rc1–/+ 20.Bc1 Qc6 21.Nc3 Ne4 22.Bb2 (22.Bd2 Nc3 23.Bc3 Rc8–/+) 22...Rc8 23.Ra3 e6 24.g3 (24.Qd1 Nd6 25.Nd2 Bg7–/+) 24...Bf8 25.Ne4? (better is 25.Ra7–/+) 25...de4 26.d5 (26.Nd2 Ba3 27.Ba3–+) 26...Qd5 (26...ed5?! 27.Nd4 Qc4 28.Ra7 Qb3 29.Nb3–+) 27.Qd5 ed5 28.Ra7 (28.Nd4 Ba3 29.Ba3 Nc5–+) 28...ef3 29.Rd7 Rc2 30.Rd5 Rb2 (30...Rb2 31.h3 Rb1 32.Kh2 Rf1–+) 0–1. Hoefer,Heijo – Zimmermann,Klemens, Koblenz op, 1992.

9.h3 A) 9...Bh6 10.Be2 (10.g4 Bg7 11.Bd3 Nbd7 12.Qc2 0–0 13.Ne2 Ne4 14.Nf4) 10...Nbd7 11.0–0 0–0 12.Qc2 b6 13.h4 Bb7 14.Ng5; B) 9...Bg7 10.Bd3 (10.Ng5 Qd6 11.Bd3 Nbd7 12.0–0 0–0 13.Qb3 e5 14.Be2) 10...Nbd7 11.0–0 0–0 12.Qb3 Qd6 13.Rfd1 b6 14.a4; C) 9...Nbd7 10.Ng5 (10.Bd3 Bh6 11.0–0 0–0 12.Qb3 b6 13.Bc1 Bb7 14.e4) 10...Qd6 11.Bd3 Bh6 12.Nf3 Nb6 13.Ne5 Be6 14.0–0.

6.Nf3 d5

7.Bb2 Qd6 8.Qc2 (8.e4 de4 9.Ne4 Qf4=) 8...Nf6 (8...e5 9.Rc1 Nd7 10.Be2–/+) 9.Nb5 (9.d4 Bg4+=) 9...Qd8 10.Rc1 (10.Nc3 e6+=) 10...Nbd7 (10...a5 11.ba5 Nbd7 12.Nbd4 Qa5 13.Be2–/+) 11.Nbd4 e6 (11...a5 12.b5 c5 13.Nf5–/+) 12.Nc6 (12.d3!?–/+) 12...bc6 13.Qc6 Rb8 14.Be5 (14.Qa4 Bd6–/+) 14...Bb7 15.Qb5 (15.Qa4!? Rc8 16.Rc8 Qc8 17.Bf6 gf6 18.Qa7–/+) 15...Rc8–+ 16.Rc3 (16.Rc8 Qc8 (16...Bc8?! 17.Qc6 Ng8 18.Bc7+=) 17.Bf6 a6–+) 16...Rc3 17.Bc3 Qb6 (17...Qc7 18.Be2–+) 18.Ne5 (18.Bd4 Qb5 19.Bb5 a6–+) 18...Qb5 19.Bb5 Bd6 (19...Ke7 20.Nd7 Nd7 21.Be2–+) 20.Nd7 Nd7 21.0–0 (21.Bg7 Rg8 22.Bd4–+) 21...f6 22.Rc1 (22.d4 Ke7–+) 22...Ke7 23.Bd4 (23.Bb2 a6 24.Ba4 e5–+) 23...a6 24.Be2 Rc8 25.Rc3 (25.Rc8 Bc8 26.d3 e5–+) 25...Rc3 26.Bc3 Nb6 (26...Nb6 27.d3 e5–+) 0–1. Labahn,Wolfgang – Wieghardt,C, Jugend–BEMS, 1980.

7.d4 Qd6 8.Be2 Bg4 9.Ne5 Be2 10.Qe2 Nf6 11.0–0 Nbd7 12.Nd3 e6 13.Bb2 e5 14.de5 Ne5 15.Ne5 Qe5 16.Nb5 Qe7 17.Bf6 gf6 18.Nd4 Qe5 19.Qf3 Bd6 20.g3 h5 21.h4 0–0–0 22.Rac1 Kb8 23.Rc6 Rc8 24.Rc8 Kc8 25.Rc1 Kb8 26.Nb5 a6 27.Nd6 Qd6 28.Rc5 d4 29.ed4 Qd4 30.Rh5 Rh5 31.Qh5 Qa1 0–1. barborski – mabeji, kurnik, 2013.

7.d4 Nf6 +=.

7.Bb2 Nf6

8.Rc1 +=.

8.Be2 Qd6 9.0–0 Bg4 10.h3 h5 11.b5 (worse is 11.hg4 hg4 12.Nb5 cb5–+) 11...Nbd7 12.a4 (12.hg4? hg4 13.g3 gf3 14.Bf3 Ne5–+) 12...e6 13.Ba3 (13.hg4? hg4 14.g3 gf3 15.Bf3 Ne5–+) 13...Qc7 14.Bf8 (14.hg4? hg4 15.g3 gf3 16.Bf3 Ba3 17.bc6 Bb2 18.cd7 Qd7–+) 14...Kf8 15.d4 (15.bc6 bc6 16.Rc1 Bf3 17.Bf3 g5+=) 15...Bf3–/+ 16.Bf3 g5 17.g3 (17.bc6!? bc6 18.Be2–/+) 17...g4–/+ 18.hg4 h4 19.Kg2 Kg7 (19...h3 20.Kh2–/+) 20.Qd3 Rag8 (20...h3 21.Kh2+=) 21.g5 (better is 21.Rh1!? hg3 22.bc6 Qc6 23.Kg3=) 21...Kf8 22.Ne2 (22.bc6!? bc6 23.gf6 hg3 24.Bd1 Rh2 25.Kf3–+) 22...Rg5–+ 23.Rh1 Kg7 (23...c5 24.dc5 Kg7 25.b6 Qc5 26.ba7 Qa7 27.Rh3–+) 24.Rh3 hg3 (24...e5 25.e4 ed4 26.ed5–+) 25.Rg3 Rg3 26.Ng3 Nf8 27.Rh1 Ng6 28.Rh8 Kh8 29.Be2 cb5 30.ab5 Kg7 31.f4 Qd7 32.Kf2 Ne7 33.Nh5 Nh5 34.Bh5 Nf5 35.Bg4 Nd6 36.Be2 Ne4 37.Kg1 Qe7 38.Bf1 (38.Bf3 Nd6–/+) 38...Qh4–+ 39.Qe2 Kf6 40.Bg2 Kf5 41.Qd3? (better is 41.Bf3!?–+) 41...Qe1 42.Kh2 Kg4 43.Be4 (43.f5 Qg3 44.Kg1 Qf2 45.Kh2–+) 43...Qg3 (43...de4 44.Qc2 Kf3 45.Qg2 Ke3–+) 44.Kh1–/+ de4 (44...de4 45.Qd2 Kf3 46.Qd1 Ke3 47.Qc1 Kf3 48.Qd1 Kf4–+) 0–1. Fournier,Frederic (1875) – Bourbon,Bernard (1885), Club, 2012.

8.h3 a5 A) 9.Qa4 A1) 9...Qd6 10.Be2 (10.Rc1 Nbd7 11.ba5 e5 12.a6 Be7 13.d4 ed4 14.ed4; 10.ba5 Qc7 11.Be2 Ra5 12.Qc2 Nbd7 13.0–0 Ne5 14.Ne5) 10...Nbd7 11.0–0 e5 12.d4 Be7 13.ba5 0–0 14.Rfe1; A2) 9...Nbd7 10.Bd3 (10.ba5 Qf5 11.d4 Qg6 12.Nh4 Qg5 13.Nf3 Qg6 14.Nh4; 10.Be2 Nb6 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 g6 14.0–0) 10...Nb6 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 Qd6 14.Ne2; A3) 9...g6 10.Be2 (10.ba5 Nbd7 11.Be2 Bg7 12.0–0 0–0 13.Rab1 Ne5 14.Ng5; 10.Bd3 Nbd7 11.0–0 Qd6 12.Qc2 e5 13.e4 d4 14.Na4) 10...Nbd7 11.0–0 Bg7 12.ba5 0–0 13.Ng5 Qd6 14.Qb4; A4) 9...Qf5 10.b5 (10.ba5 Nbd7 11.Be2 Nc5 12.Qb4 e5 13.0–0 Bd6 14.a6; 10.d4 Nbd7 11.ba5 e6 12.a6 b5 13.Qd1 Ba6 14.g4) 10...c5 11.Be2 Nbd7 12.b6 c4 13.Nb5 Kd8 14.Bd4; B) 9.b5 B1) 9...Nbd7 10.bc6 (10.Rc1 c5 11.Be2 g6 12.0–0 Bg7 13.Qa4 Qd6 14.Qh4) 10...bc6 11.Rb1 g6 12.Be2 Bg7 13.0–0 0–0 14.Ng5; B2) 9...Qd6 10.d4 (10.bc6 bc6 11.Be2 Nbd7 12.0–0 g6 13.a4 Bg7 14.Ba3; 10.Be2 Nbd7 11.bc6 bc6 12.0–0 g6 13.a4 Bh6 14.Ba3) 10...Nbd7 11.bc6 bc6 12.Rb1 g6 13.Bd3 Bg7 14.0–0; B3) 9...c5 10.Qc2 (10.Na4 Nbd7 11.Be2 Qd6 12.b6 c4 13.d3 cd3 14.Bd3; 10.Bd3 c4 11.Bc2 Nbd7 12.d3 Ne5 13.Ne5 Qe5 14.dc4) 10...Nbd7 11.Be2 g6 12.Ng5 Qd6 13.0–0 Bg7 14.d4; C) 9.d4 C1) 9...Nbd7 10.Bd3 (10.b5 g6 11.bc6 bc6 12.Rb1 Bh6 13.Be2 0–0 14.0–0; 10.ba5 Ra5 11.Rc1 Qd6 12.Qb3 g6 13.Bd3 Bh6 14.Qb4) 10...g6 11.0–0 Bh6 12.Re1 0–0 13.b5 Nb6 14.bc6; C2) 9...Qd6 10.b5 (10.ba5 Ra5 11.Bd3 g6 12.0–0 Bg7 13.a4 0–0 14.Qd2; 10.Be2 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.0–0 e6 14.Rb1) 10...Nbd7 11.bc6 bc6 12.Bd3 c5 13.0–0 c4 14.Bc2; C3) 9...ab4 10.ab4 Ra1 11.Qa1 g6 12.Qa8 Na6 13.Ba6 ba6 14.Na4; C4) 9...g6 10.b5 (10.Bd3 Bh6 11.0–0 Nbd7 12.Qc2 0–0 13.Rfe1 Qd6 14.ba5; 10.Be2 Nbd7 11.0–0 Bh6 12.b5 0–0 13.Rc1 Rd8 14.Na4) 10...Bh6 11.Be2 0–0 12.0–0 Nbd7 13.Rc1 Rd8 14.Na4; D) 9.Be2 D1) 9...Qd6 10.b5 (10.Qa4 Nbd7 11.0–0 e5 12.d4 Be7 13.b5 ed4 14.ed4) 10...c5 11.d4 Nbd7 12.0–0 b6 13.dc5 Nc5 14.Na4; D2) 9...Nbd7 10.0–0 (10.Qb3 ab4 11.ab4 Ra1 12.Ba1 Qd6 13.0–0 e5 14.b5; 10.b5 c5 11.0–0 g6 12.d4 c4 13.Qc2 Bh6 14.h4) 10...ab4 11.ab4 Ra1 12.Qa1 Qd6 13.Qa8 Nb6 14.Qa5; D3) 9...ab4 10.ab4 Ra1 11.Qa1 Nbd7 12.0–0 Qd6 13.b5 c5 14.d4.

8.h3 Qd6 A) 9.Qc2 A1) 9...a5 10.b5 (10.Na4 Nbd7 11.b5 c5 12.Be2 g6 13.b6 Bg7 14.d3; 10.ba5 Nbd7 11.a6 ba6 12.Be2 Rb8 13.a4 g6 14.0–0) 10...Nbd7 11.Be2 c5 12.0–0 g6 13.Qd3 e5 14.Qc2; A2) 9...e5 10.Be2 (10.Nb5 Qd8 11.Nc3 Bd6 12.Be2 Nbd7 13.0–0 0–0 14.e4; 10.Bb5 Nbd7 11.Be2 Be7 12.0–0 0–0 13.d3 h6 14.Na4) 10...Nbd7 11.b5 c5 12.0–0 Be7 13.e4 d4 14.Nd5; A3) 9...Nbd7 10.Be2 (10.Bd3 e5 11.e4 d4 12.Ne2 Be7 13.0–0 0–0 14.Nh4) 10...e5 11.0–0 Be7 12.Na4 0–0 13.d4 ed4 14.Bd4; B) 9.Bd3 B1) 9...a5 10.0–0 (10.Ne2 Nbd7 11.0–0 g6 12.Qc2 Bg7 13.Bc3 0–0 14.Ng3; 10.b5 Nbd7 11.0–0 c5 12.Bc2 Nb6 13.d3 Bd7 14.Qe2) 10...e5 11.Be2 ab4 12.ab4 Ra1 13.Qa1 e4 14.Nd4; B2) 9...Nbd7 10.0–0 (10.Qb3 e5 11.e4 d4 12.Ne2 Nb6 13.0–0 Qc7 14.Ng3; 10.Be2 e5 11.0–0 Be7 12.Na4 0–0 13.d4 e4 14.Ne5) 10...g6 11.Qc2 Bg7 12.e4 d4 13.Nd4 Qd4 14.Nd5; B3) 9...g6 10.0–0 (10.Qc2 Nbd7 11.0–0 Bg7 12.e4 d4 13.Na4 Nh5 14.Rab1; 10.Qe2 Nbd7 11.e4 d4 12.Nb5 cb5 13.e5 Ne5 14.Qe5) 10...Nbd7 11.Qc2 Bg7 12.Na4 0–0 13.Nc5 e5 14.Be2; B4) 9...e5 10.e4 (10.Bc2 Be7 11.0–0 0–0 12.Qe2 Nbd7 13.d3 h6 14.b5) 10...de4 11.Be4 Be7 12.0–0 0–0 13.Re1 Nbd7 14.Bc2; C) 9.d4 C1) 9...Nbd7 10.b5 (10.Bd3 g6 11.0–0 Bg7 12.Qb3 0–0 13.Rfd1 b6 14.a4; 10.Qb3 g6 11.Be2 Bg7 12.0–0 0–0 13.Bd3 b6 14.a4) 10...c5 11.Be2 e6 12.0–0 Be7 13.dc5 Nc5 14.Na4; C2) 9...Bf5 10.Nh4 (10.Be2 Nbd7 11.0–0 g6 12.g4 Be6 13.Bd3 Nb6 14.Ng5; 10.Bd3 g6 11.0–0 Nbd7 12.Re1 Bg7 13.Bf5 gf5 14.b5) 10...Bg6 11.Ng6 hg6 12.Bd3 Nbd7 13.0–0 0–0–0 14.Rc1; C3) 9...a5 10.b5 (10.ba5 Ra5 11.Bd3 g6 12.0–0 Bg7 13.a4 0–0 14.Qd2; 10.Be2 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.0–0 e6 14.Rb1) 10...Nbd7 11.Be2 g6 12.0–0 Bg7 13.bc6 bc6 14.a4; C4) 9...g6 10.Rc1 (10.Bd3 Bf5 11.0–0 Nbd7 12.Na4 Bd3 13.Qd3 Bg7 14.Nc5; 10.Be2 Bg7 11.Bd3 Nbd7 12.0–0 0–0 13.Qb3 b6 14.a4) 10...Bg7 11.Bd3 0–0 12.0–0 Nbd7 13.Qb3 Nb6 14.Ne5; D) 9.Be2 Nbd7 10.Qc2 (10.0–0 g6 11.Qc2 Bg7 12.e4 0–0 13.ed5 Nd5 14.Ne4; 10.Na4 b5 11.Nc5 Nc5 12.bc5 Qc5 13.Rc1 Qd6 14.Ne5) 10...g6 11.e4 Bg7 12.ed5 Nb6 13.dc6 Bf5 14.d3.

8.h3 Nbd7 A) 9.d4 A1) 9...a5 10.Bd3 (10.Be2 g6 11.0–0 Bh6 12.h4 Qd6 13.Ng5 0–0 14.Qb3; 10.b5 g6 11.Ng5 Qd6 12.bc6 bc6 13.Rb1 Bh6 14.h4) 10...g6 11.0–0 Bh6 12.Re1 0–0 13.b5 Nb6 14.bc6; A2) 9...Qd6 10.Bd3 (10.Qc2 g6 11.Bd3 Bh6 12.0–0 0–0 13.Ne2 Nb6 14.Ne5; 10.Be2 g6 11.0–0 Bg7 12.b5 0–0 13.bc6 bc6 14.a4) 10...g6 11.0–0 Bg7 12.Qb3 0–0 13.Rfe1 Nb6 14.b5; A3) 9...g6 10.Bd3 (10.Be2 Bg7 11.0–0 0–0 12.Qb3 Nb6 13.Bd3 Qd6 14.Nd2; 10.Qb3 Bh6 11.Bd3 0–0 12.0–0 a5 13.Rfc1 b6 14.Na4) 10...Bh6 11.0–0 0–0 12.Qb3 b6 13.Bc1 Bg7 14.e4; B) 9.Qb3 B1) 9...Qd6 10.Bd3 (10.d4 a5 11.b5 c5 12.Be2 g6 13.Qd1 c4 14.a4; 10.Be2 g6 11.0–0 Bg7 12.d4 0–0 13.a4 b6 14.Qc2) 10...e5 11.e4 d4 12.Ne2 Nb6 13.0–0 Qc7 14.Rfe1; B2) 9...a5 10.Be2 (10.ba5 Ra5 11.Be2 c5 12.Nb5 Qc6 13.a4 c4 14.Qc2) 10...ab4 11.ab4 Ra1 12.Ba1 Qd6 13.0–0 e5 14.Qc2; B3) 9...g6 10.Bd3 (10.Ng5 Qd6 11.Nce4 Qc7 12.Rc1 Bh6 13.Nf6 Nf6 14.Nf3; 10.Rc1 Qd6 11.d4 Bg7 12.Bd3 a5 13.ba5 Ra5 14.a4) 10...Qd6 11.0–0 Bg7 12.e4 0–0 13.Nd5 Ne4 14.Bg7; C) 9.Bd3 g6 10.0–0 (10.Rc1 Bg7 11.0–0 0–0 12.Qb3 Qd6 13.e4 de4 14.Ne4; 10.Qb3 Qd6 11.0–0 Bg7 12.e4 0–0 13.Nd5 Nd5 14.Bg7) 10...Bg7 11.e4 0–0 12.ed5 Nd5 13.Re1 Nc3 14.Bc3.

8.h3 g6

9.Qa4 A) 9...Bg7 10.d4 (10.b5 0–0 11.Be2 Nbd7 12.bc6 Qc6 13.Rc1 Qa4 14.Na4; 10.Qb3 Qd6 11.e4 Nbd7 12.ed5 Nb6 13.dc6 Be6 14.Qc2) 10...Qd6 11.Be2 0–0 12.0–0 Bf5 13.g4 Be6 14.Ng5; B) 9...Qd6 10.Bd3 (10.Be2 Nbd7 11.0–0 Bg7 12.b5 0–0 13.bc6 bc6 14.Qh4; 10.g4 Nbd7 11.g5 Nh5 12.Be2 Bg7 13.Qc2 0–0 14.Na4) 10...Bg7 11.Qd1 Nbd7 12.0–0 0–0 13.Be2 e5 14.d4; C) 9...Bh6 10.b5 (10.Be2 0–0 11.b5 Qd6 12.bc6 Nc6 13.Nb5 Qb8 14.0–0; 10.Nd4 Qd6 11.Ncb5 Qd8 12.Nc3 e5 13.Nf3 d4 14.Ne2) 10...Nbd7 11.bc6 bc6 12.Nd4 Nc5 13.Qc6 Qc6 14.Nc6; D) 9...Nbd7 10.Bd3 (10.Qa5 Bg7 11.Bd3 Qd6 12.0–0 0–0 13.Be2 e5 14.d3; 10.Qc2 Bg7 11.Bd3 Qd6 12.0–0 0–0 13.Rfc1 a5 14.Qb3) 10...Bg7 11.0–0 0–0 12.Qb3 Qd6 13.Be2 Nb6 14.d3.

9.Qb3 A) 9...Nbd7 10.Ng5 (10.Bd3 Qd6 11.0–0 Bh6 12.e4 d4 13.Ne2 e5 14.g4; 10.d4 Bh6 11.Bd3 0–0 12.0–0 b6 13.Bc1 Bg7 14.Bd2) 10...Qd6 11.Nce4 Qc7 12.Be2 Bg7 13.Nf6 Nf6 14.f4; B) 9...Qd6 10.e4 Nbd7 11.ed5 Bh6 12.dc6 bc6 13.Be2 0–0 14.Na4; C) 9...Bh6 10.g4 (10.Bd3 0–0 11.g4 Bg7 12.g5 Nh5 13.Na4 Bb2 14.Qb2; 10.Be2 0–0 11.0–0 Nbd7 12.Rfe1 Qd6 13.d4 Nb6 14.b5) 10...0–0 11.Bd3 Bg7 12.Ne2 Nbd7 13.g5 Ne4 14.Nf4; D) 9...Bg7 10.d4 (10.Be2 0–0 11.0–0 Qd6 12.Rfd1 Nbd7 13.d3 Re8 14.a4; 10.Rc1 0–0 11.Be2 Nbd7 12.0–0 Qd6 13.d4 Nb6 14.Bd3) 10...b6 11.Bd3 0–0 12.0–0 Nbd7 13.a4 Bh6 14.e4.

9.Rc1 A) 9...Bg7 10.Na4 (10.Nd4 Qd7 11.Be2 0–0 12.0–0 e5 13.Nb3 Qe7 14.d4; 10.d4 0–0 11.Bd3 Nbd7 12.0–0 a5 13.Qb3 b6 14.Ne2) 10...Nbd7 11.b5 c5 12.Nc5 Nc5 13.Rc5 0–0 14.Rc7; B) 9...Nbd7 10.Qc2 (10.Na4 Qd6 11.Nc5 Bg7 12.Bd3 0–0 13.0–0 e5 14.Be2) 10...Qd6 11.e4 Bh6 12.Nd5 e5 13.Ne3 0–0 14.Nc4.

9.Bd3 A) 9...Bg7 10.0–0 (10.Qb3 0–0 11.0–0 Nbd7 12.Rfe1 Qd6 13.Rac1 a5 14.e4; 10.Na4 Nbd7 11.0–0 Qd6 12.Rc1 e5 13.Be2 0–0 14.Qc2) 10...0–0 11.Qc2 Nbd7 12.Rfe1 c5 13.Be2 Rd8 14.Rac1; B) 9...Qd6 10.0–0 (10.Qe2 e5 11.Rc1 Nbd7 12.e4 d4 13.Na4 Bh6 14.0–0; 10.Qb3 Bg7 11.e4 Nbd7 12.0–0 0–0 13.Nd5 Nd5 14.Bg7) 10...Bg7 11.Qe2 0–0 12.e4 de4 13.Ne4 Ne4 14.Bg7; C) 9...Nbd7 10.Qb3 (10.0–0 Bg7 11.e4 0–0 12.ed5 Nd5 13.Re1 Nc3 14.Bc3; 10.Rc1 Bg7 11.0–0 0–0 12.Na4 a5 13.b5 Qd6 14.Qc2) 10...Qd6 11.0–0 Bg7 12.e4 0–0 13.Nd5 Nd5 14.Bg7.

9.Nd4 Qd6+= 10.Rc1 (10.Be2 Bg7 11.0–0 0–0 12.f4 Nbd7 13.f5 Ne5 14.Qc2; 10.d3 Bg7 11.Be2 0–0 12.0–0 Nbd7 13.Nf3 e5 14.Qb3; 10.Bd3 e5 11.Nb3 Bg7 12.f3 0–0 13.0–0 Nbd7 14.Qe1) 10...a6 (10...e5 11.Nb3 Bg7 12.d4 0–0 13.de5 Qe5 14.Be2) 11.Na4 (11.g4 Bg7 12.g5 Nh5 13.Na4 e5 14.Nb3) 11...Nbd7 12.Nb3 (12.Be2 Bg7 13.Qc2 e5 14.Nf3) 12...Bg7 13.Be2 0–0 14.0–0 (14.Na5–/+) 14...Ne4 15.Bg7 Kg7 16.d3 Nef6 17.f4 Ne8 (17...e5 18.Qe1+=) 18.Qc2 f5 19.Nac5 Nef6 (19...b6 20.Na4 Bb7 21.Qb2 Kg8 22.Rf2+=) 20.e4 (20.Nd4 Nc5 21.bc5 Qc7=) 20...fe4+= 21.de4 Ne4 22.Ne4 de4 23.Rcd1 Qc7 24.Qe4 Nf6 25.Qc2 Be6 (25...e5!? 26.fe5 Qe5+=) 26.Nc5 Bf7 27.Qc3 Kg8 28.f5 Rad8 29.fg6 hg6 30.Bd3 Rd6 31.Rde1 Nd5 32.Qe5 a5 33.Qg3 ab4 34.ab4 Nb4?? (34...b6 35.Ne4 A) 35...Nb4 36.Ng5 (36.Nd6?! Qd6 37.Rf3 Kg7=) 36...Bd5 37.Bg6 Rf1 38.Rf1 Rg6 39.Qc7 Rg5 40.Rf4 Rg2 41.Kf1+–; B) 35...Re6=) 35.Bg6+– Bg6 36.Rf8 Kf8 37.Ne6 Re6 38.Qc7 (better is 38.Rf1 Kg7 39.Qc7+–) 38...Re1–+ 39.Kh2 Nd3 40.Qb7 c5 41.h4 Be4 42.Qb8 Kf7 43.h5?? (better is 43.Qb3 e6 44.Qa2–+) 43...Re2 44.Qb3 (44.Kg1 Rg2 45.Kf1 Rf2 46.Kg1 Rb2–+) 44...Kf6 (better is 44...e6 45.Kg1 Rg2 46.Kf1 Re2 47.Ke2 Nc1 48.Ke3 Nb3 49.Ke4 Kg7–+) 45.Qb8 (45.Kg1–+) 45...Rg2 46.Kh3 Nf2 47.Kh4 Rg4 0–1. De Visser,Arno – Demir, Sas van Gent, 1992.

9.g4 A) 9...Bg7 10.Ne2 0–0 11.Nf4 Qd6 12.Be5 Qd8 13.g5 Ne8 14.Nd3; B) 9...Rg8 10.g5 (10.Nd4 Qd6 11.g5 Nh5 12.Be2 Nd7 13.Rc1 Nb6 14.Ncb5; 10.Bd3 Nbd7 11.Qc2 a5 12.Rc1 Qd6 13.ba5 Ra5 14.0–0) 10...Nh5 11.Na4 Nd7 12.Rc1 Bg7 13.Nd4 Bd4 14.Bd4; C) 9...h6 10.Bd3 (10.Qc2 Nbd7 11.Rc1 Qd6 12.Nb5 Qb8 13.Nbd4 e5 14.Nc6; 10.Rc1 Nbd7 11.Na4 Qd6 12.Nc5 Bg7 13.Bd3 0–0 14.0–0) 10...Bg7 11.0–0 0–0 12.Be2 Nbd7 13.Qb3 b6 14.d4.

9.Ng5 A) 9...Qe5 10.f4 (10.Nf3 Qe6 11.d4 Bg7 12.Bd3 Nbd7 13.0–0 0–0 14.Qb3; 10.h4 Nbd7 11.Be2 Bg7 12.0–0 Qd6 13.Qc2 h6 14.Nf3) 10...Qd6 11.Qb3 Rg8 12.Kf2 Bg7 13.Be2 Bf5 14.g4; B) 9...Qf5 10.f4 (10.Nf3 Qe6 11.Bd3 Nbd7 12.0–0 Bg7 13.e4 0–0 14.ed5; 10.h4 h6 11.Nf3 e5 12.h5 gh5 13.Ne2 Nbd7 14.Ng3) 10...Bg7 11.Ne2 0–0 12.Nd4 Qd7 13.Bd3 h6 14.Ngf3; C) 9...Qd6= 10.Qb3 (10.Be2 Bg7 11.0–0 0–0 12.Qb3 Nbd7 13.d3 Re8 14.d4; 10.Bd3 Nbd7 11.0–0 Ne5 12.Be2 Bf5 13.d3 h6 14.Nf3) 10...Nbd7 11.Nce4 Qc7 12.Rc1 Bg7 13.Nc3 Nb6 14.Bd3.

5.e3 Qh4

6.d4 d5+= 7.Nf3 Qh5 8.Be2 Bg4 (8...Qg6 9.Rg1+=) 9.0–0 Nd7 (9...Nf6 10.h3 Bf3 11.Bf3=) 10.e4 (10.b5 e5 11.h3 Bf3 12.Bf3 Qg6=) 10...de4+= 11.Ne4 Ngf6 12.Ng3 Qd5 13.Bb2 (13.h3 Be6+=) 13...h5 (13...e6 14.h3 Bf3 15.Bf3–/+) 14.h3 (14.Qc2 h4 15.Bc4 Qd6+=) 14...Bf3 (14...h4!? 15.Nh1 Bf5–/+) 15.Bf3= Qd6 16.Nh5 0–0–0 (better is 16...Nh5 17.Bh5 g6=) 17.Qb3?? (better is 17.Nf6 Nf6 18.Qb3+=) 17...Nh5–+ (17...Rh5?! 18.Bh5 Nh5 19.Qf7+=) 18.Rfc1 (18.b5 cb5 19.Qb5 Qa6 20.Rfc1 Kb8 21.Qa6 ba6–/+) 18...Kb8 19.a4 (better is 19.b5!? cb5 20.Qf7–+) 19...e6 20.Ba3? (20.b5 cb5 21.ab5–+) 20...Qd4 21.Rd1 Qb6 (21...Qf4 22.b5 c5 23.Bc1–+) 22.Qb2 (22.a5 Qb5 23.a6 Qa6 24.Bh5 Rh5–+) 22...Nhf6 (22...Nf4 23.Rd2–+) 23.a5 (23.b5 Ba3 24.Qa3 cb5–+) 23...Qc7 (23...Qb5 24.Be2 Qg5 25.b5 Ba3 26.Ra3–+) 24.Rac1 a6 25.Qe2 (25.b5 ab5 26.a6 Ba3 (26...ba6?! 27.Rc6 Qb7 28.Bf8 Rdf8 29.Ra1–+) 27.Qa3 Ne5 28.ab7 Kb7–+) 25...g5 (25...Bd6 26.Bc6 bc6 27.Qa6–+) 26.Bb2 (26.Rc4 Bd6–+) 26...g4 (26...Bb4!? 27.Rb1 c5 28.Rdc1–+) 27.Bg4 Rg8 (27...Rh4 28.Rc4 Ng4 29.Rg4 Rg4 30.Qg4–+) 28.Bf3 (28.Bh5 Nh5 29.Qh5 f6–+) 28...Bb4 29.Bc6 (29.Ba1 Qa5 30.Rb1 Nd5–+) 29...bc6 30.Qa6 c5 (30...Nd5 31.Rc6 Qb7 32.Qc4 Ba5 33.Qa6–+) 31.Bd4 (31.Bc3 Qb7 32.Qf1 Rg2 33.Qg2 Rg8 34.Qg8 Ng8–+) 31...Qb7 32.Be5 (32.Qb7 Kb7 33.Bc3–+) 32...Ne5 (32...Ne5 33.Rd8 Rd8–+) 0–1. Trkn – zweitausend, itsyourturn.com, 2000.

6.e4 a5 7.Nf3 Qg4 =.

6.Nf3 Qf6 7.Bb2 d5 8.Nd5! Qb2 9.Nc7 Kd8 10.Na8 +–.

6.Nf3 Qf6 7.Bb2 d6 8.d4 g6 9.Ne4 Qf5 10.Bd3 Qd7 11.d5 cd5 12.Nd6 Qd6 13.Bh8 f6 14.Qb3 e5 15.e4 Be6 16.ed5 Bd5 17.Bc4 Bc4 18.Qc4 Nc6 19.Qg8 0–0–0 20.Qb3 Bh6 21.Bf6 Qf6 22.0–0 Nd4 23.Nd4 ed4 24.Qh3 Kb8 25.Qh6 d3 26.Rfd1 d2 27.Ra2 Qe6 28.Rad2 Qb3 29.Rd8 1–0. kaasparov (1625) – lpka, kurnik, 2014.

6.Nf3 Qf6 7.Bb2 e5 8.Qc2 (8.Ne4 Qg6 9.Bd3 d6+=) 8...d6+/– 9.b5 (9.Bd3 Qh6 10.Nd5 Kd8+/–) 9...Be6 (9...Qg6 10.Qa4=) 10.Ne4 (10.d4 Qg6 11.Qg6 hg6 12.bc6 bc6 (12...Nc6? 13.d5+–) 13.de5 Nd7 14.ed6 Nc5+/–) 10...Qd8 (10...Qg6!? 11.Bd3 Qg2+/–) 11.Neg5+/– Bd7 12.a4 (12.bc6!? Nc6 13.Bc4+/–) 12...h6 13.Ne4 f5 (13...Nf6 14.Nf6 gf6 15.Be2+=) 14.Ng3+/– Qc8 15.Rc1 Be7 16.Bc4 Nf6 17.h3 (17.Bb3 g5+/–) 17...d5 Black prepares e4 (17...cb5!? 18.ab5 d5+=) 18.Be2+/– e4 19.Ne5 0–0 20.Nh5 (20.Ng6 Rf7+/–) 20...Nh5 21.Bh5 (21.Ng6!? Bd6 22.Bh5= (worse is 22.Nf8 Be8–+)) 21...Bf6 (21...Be8!? 22.Be8 Re8+=) 22.Ng6+= Rf7 (better is 22...Be8!? 23.Ba3 Bg6 24.Bg6 Rd8=) 23.Bf6+/– gf6 24.Qc5 Qd8 25.Qd6 Rg7 26.g4 (26.0–0!? a6 27.bc6 Nc6 28.Nf4+/–) 26...fg4 27.hg4 Kh7? (better is 27...Qe8+/–) 28.Nf8+– Kg8 29.Ne6 Qe7 30.Qe7 Re7 31.Nc7 cb5 32.ab5 (32.Nd5?! Rg7 33.ab5 a5 34.Nf6 Kf8+–) 32...a5?? (32...Bb5 33.Nd5 Nc6 34.Rc6 bc6 35.Ne7 Kf8+–) 33.Na8 (33.Na8 Kf8 34.Nb6+–) 1–0. Kasachev,Yuriy – Kazakov,Vasiliy (1735), Astrakhan RUS, Open, 2012.

6.Nf3 Qf6 7.Bb2 e6 8.Qc2 Qd8 9.d4 d5 10.Rc1 Nf6 11.e4 de4 12.Ne4 Be7 13.Bd3 h6 14.0–0 0–0 15.Rfd1 Nd5 16.b5 Nd7 17.bc6 bc6 18.Qc6 N7f6 19.Nf6 Bf6 20.Qa8 Qb6 21.Rc8 1–0. kaasparov – doktormira2, kurnik, 2014.

6.Nf3 Qg4 7.Bb2 d5 8.h3 Qe6 9.d4 b5 10.Nb5 cb5 11.Bb5 Nd7 12.Rc1 Kd8 13.Rc6 Qf5 14.g4 Qf6 15.Rf6 Ngf6 16.g5 Ng8 17.Bc6 Rb8 18.Qa4 Rb6 19.Bd7 Bd7 20.Qa7 Rd6 21.Ne5 f6 22.Qa5 Kc8 23.Qa8 Kc7 24.Qf8 fe5 25.Qg7 ed4 26.Qh8 Rg6 27.Qd4 e6 28.Qc5 Kd8 29.Bg7 Bc8 30.Qf8 Kd7 31.Qf7 Kc6 32.Qg8 Ba6 33.Qe8 Kc7 34.Be5 Kb6 35.Qd7 Bb5 36.Bd4 Ka6 37.Qc8# 1–0. Bonetti,Shane – ProphetX (1745), ICC, 2002.

6.Nf3 Qh6 7.d4 d5 8.Bd3 +/–.

3.a3 d5

4.c5 Qc7 5.e3 e5 6.Nf3 Bg4 7.Be2 Nd7 8.Nc3 Ngf6 9.Bb2 e4 10.Nd4 Be2 11.Qe2 Bc5 (better is 11...Ne5 12.0–0 b6+=) 12.bc5+= Nc5 13.0–0 Nd3 14.Rab1 0–0 15.f4 Qd7 16.h3 Rfe8 17.g4 Kf8 18.Nd1 Ng8 19.Nf2 Nb2 20.Rb2 Ne7 21.Kg2 a6 22.g5 c5 23.Nc2 Nf5 24.Qh5 Kg8 25.Ng4 Qc6 26.Ne5 Qc7 27.Rfb1 b5 28.Ne1 d4 29.Kf2 Re5 30.fe5 Qe5 31.Qg4 de3 32.de3 Qh2 33.Ng2 (33.Ng2 Nd6 34.Rd2+–) 1–0. combijack (1780) – chesssebas (1630), gameknot.com, 2011.

4.c5 Qd8 5.Bb2 f6 6.d4 Bf5 7.e3 e6 8.Bd3 Bg6 9.Bg6 hg6 10.Qg4 Kf7 11.Nd2 Nh6 12.Qe2 f5 13.Ngf3 Nd7 14.0–0 Be7 15.h3 g5 16.Ne5 Ne5 17.de5 g4 18.hg4 Ng4 19.f3 Nh2 20.Rfd1 Bh4 21.e4 fe4 22.fe4 Qg5 23.Nf3 Nf3 24.Qf3 Ke7 25.ed5 cd5 26.Bc1 Qe5 27.Bf4 Qf5 28.Bd6 Kd7 29.Qf5 ef5 30.Rd5 g6 31.Be5 Ke6 32.Rad1 Bf6 33.Rd6 Ke5 34.Re1 Kf4 35.Rf6 Kg5 36.Ree6 Rag8 37.Rf7 Rb8 38.Ree7 b6 39.cb6 ab6 40.Rb7 Rb7 41.Rb7 Ra8 42.Rb6 Ra3 43.Rc6 Rb3 44.Rc4 f4 45.Kh2 Kg4 46.Rd4 g5 47.Rc4 Rb2 48.Kg1 Kh4 49.Kf1 Kg3 50.Rc5 g4 51.Rc3 f3 52.gf3 gf3 53.Rc1 Rb4 54.Kg1 Rb2 55.Rf1 f2 56.Kh1 Rb4 0–1. kaasparov – piotrms, kurnik, 2013.

4.e3 dc4 5.Bc4 a5 6.d4 =.

4.e3 Bf5 5.Bb2 Nd7 6.Nc3 e6 7.Nf3 Ngf6 8.Be2 Be7 9.0–0 0–0 10.d4 Rfe8 11.Nh4+= Be4 12.f3 Bg6 13.Ng6+/– hg6 14.c5 Qc7+= 15.a4 Nf8 16.b5 Rad8 17.Qc2 (17.Qd3 b6 18.cb6 ab6 19.bc6 Qc6+/–) ½–½. Dessing,Bastiaan – Clevers,Egbert, Hengelo U14 open, 2003.

4.cd5 cd5

5.Bb2 a5 6.Qb3 ab4 7.ab4 Ra1 8.Ba1 e6 9.b5 Bd7 (9...Nd7 10.e3=) 10.e3 (10.Qg3 Nc6 11.Bg7 Bg7 12.Qg7 Qd4 (12...Qb5?? 13.Nc3 Qb2 14.f3+–) 13.Qd4 Nd4=) 10...Nc6 11.Nf3 Na5 12.Qa4 Nc4 (12...f6!?=) 13.Bc4+/– dc4 14.Qc4 (better is 14.Qa8!? Qd8 15.Qb7+/–) 14...Qb5= (worse is 14...Bb5 15.Qc8 Qd8 16.Qb7+/–) 15.Qb5 Bb5 16.Nc3 Ba6 17.Nd4 Be7 18.Ndb5 Bf6 19.Nc7 Kd7 20.Na6 ba6 21.0–0 Ne7 22.Ne4 Ba1 23.Ra1 f5 24.Nc5 Kc6 (better is 24...Kd6!? 25.d4 Ra8 26.Ra6 Ra6 27.Na6 e5 28.de5 Ke5+/–) 25.Ne6+– (25.Na6?! Kd6+/–) 25...Ra8 26.Ng7 a5 27.Ne6 Kd6 28.Nd4 Kc5 29.f4 (29.Ra4 Kb6+–) 29...Nd5? (better is 29...a4+–) 30.Nf5 a4 31.Kf2 Kb4 Black prepares a3 32.Nd4 Kc4 33.Ke2 (33.Ne6 a3+–) 33...a3? (33...Nf4 34.ef4 Kd4 35.Ra3+–) 34.Kd1 (34.Ne6 Kb3 35.e4 Kb2 36.Ra3 Nf4 37.Nf4 Ra3+–) 34...Nb4 Black plans a2 (34...Nf4 35.Nc2 Ng2 36.Ra3 Ra3 37.Na3 Kd5 38.Ke2+–) 35.g3 Kd3 (35...a2 36.f5+–) 36.Nb5 (36.Rc1!? h6 37.Rc3 Ke4+–) 36...a2 37.Nc3 h5 38.h3 Rg8 39.Ke1?? (better is 39.Na2 Na2 40.Ra2 Rg3 41.Ra3 Kc4 42.Rc3 Kb4 43.e4 Rg1 44.Ke2 Rg2 45.Ke1+–) 39...Rg3?? (better is 39...Nc2 40.Kf2 Na1 41.Na2 Kd2–+) 40.Kf2+– Rh3 41.Na2 Na2 (better is 41...Nc2!? 42.Rd1 Rh2 43.Kf3 Rd2 44.Nc1 Kc3+–) 42.Ra2 Rh2 43.Kg3 Rh1 44.f5 Rf1 45.Ra5 Kd2 46.e4 Ke3 47.Ra4 Rf4?? (47...Rg1 48.Kh4 Rh1 49.Kg5 h4+–) 48.Ra3 Ke4 49.Ra4 Kf5 50.Rf4 Kg5 51.Rh4 Kh6 52.Kf4 Kg6 53.Rh2 Kf6 54.Rh5 1–0. avinoam – polams, kurnik, 2012.

5.d4 Nf6 =.

3.a3 d6

4.Bb2 e5 5.e3 Nf6 6.Nf3 Be7 7.Be2 0–0 8.0–0 Re8 9.Nc3 Bf5 10.d4 e4 11.Nd2 d5 12.Qb3 Be6 13.cd5 cd5 14.Rfc1 Nc6 15.Na4 Qd8 16.Nc5 Bc8 17.a4 (17.Rc2 Bc5 18.Rc5 Bg4+=) 17...h5 (17...a5!? 18.b5 Nb4=) 18.a5+= a6 19.Bc3 Rb8 20.b5 ab5 21.Qb5 Bg4 22.Bg4 (22.Nb7?! Qc7 23.a6 Na7=) 22...Ng4 23.h3 Nf6 (23...Bc5!? 24.Qc5 Nf6+=) 24.Nb7+/– Qd7 25.a6 Bd6 26.Ba5 Na7?? (better is 26...Rec8+–) 27.Qd7 Nd7 28.Bc7 (better is 28.Nd6 Re6 29.Rc7 Rd6 30.Ra7+–) 28...Bc7 29.Rc7 Nb6 30.Nb3 (30.Nd6 Red8+–) 30...Ra8 (30...Rec8 31.Rc5+–) 31.Nd6 Rf8 32.Nc5 h4 33.Rb1 Nc4 34.Nc4 dc4 35.Ne4 Kh7 (35...Rfc8 36.Rcb7 c3+–) 36.Rc4 Kg6 37.Rb6 f6 38.Rc7 Kf5 (38...Rf7 39.Rf7 Kf7 40.Nd6 Kg6+–) 39.Nd6 Kg6 40.Nc4 (better is 40.Rbb7 Rg8 41.Ra7 Ra7 42.Ra7 Rd8+–) 40...Kh6 (40...Rfc8 41.Rbb7 Rc7 42.Rc7+–) 41.d5 (41.Rbb7 Nc8 42.Rg7 Ra6 43.Rh7 Kg5 44.Rbg7 Kf5+–) 41...Rfd8 42.d6 Nc8 43.Rbc6 Na7 44.Rc5 Nc8 (44...g5 45.d7 Kg7 46.Nb6+–) 45.d7 Na7 46.Nb6 Rab8 47.Ra7 (better is 47.Rb7 Rf8+–) 47...Rb6 48.Rc8 Ra6 (48...Rd7 49.Rh8 Kg6 50.Rd7 Ra6 51.Rh4 Ra1 52.Kh2 f5+–) 49.Rd8 Ra7 50.Rh8 Kg5 51.d8Q g6 0–1. druhynejhorsi (1730) – 1paul1 (1930), kurnik, 2012.

4.d4= a5 5.ba5 Qa5 6.Bd2 Qf5 7.Nf3 Nf6 8.Nc3 e5 9.e4 Ne4 10.Bd3 Nc3 11.Bf5 (< 11.Bc3 e4 12.Qe2 d5 13.cd5 cd5 14.Bb5 Bd7–/+) 11...Nd1 12.Bc8 Nb2 13.Ke2 (13.d5 e4 (< 13...Nc4 14.Bb7 Ra3 15.Ra3 Na3 16.dc6+=) 14.Ng5 Ra7=+) 13...Nc4 –/+.

4.d4= c5 5.dc5 dc5 6.Be3 e5 7.Qd5 (7.Nc3 Na6=) 7...Nd7 8.Bc5?? (better is 8.Nc3=+) 8...Nc5 (8...Bc5 9.e3–+).

4.d4 e5 5.c5 dc5 6.dc5 Qc7 7.Bb2 Be6 8.e3 Nd7 9.Nf3 0–0–0 10.Ng5 Nc5 11.Ne6 Rd1 0–1. barborski – koleos73 (1630), kurnik, 2013.

4.d4 Nf6 5.c5 Qc7 6.Bb2 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 b6 10.Qc2 g6 11.e4 Ne4 12.Qe4 Bf5 13.Qe3 Bb1 14.d5 Rg8 15.cb6 Qb7 16.dc6 Nc6 17.Bb5 Bf5 18.Nd4 Bd7 19.Qf3 Nd8 20.Bd7 Qd7 21.0–0 f5 22.Qd5 e6 23.Re1 Kf7 24.Qf3 Bg7 25.g4 Be5 26.Qe3 Bg7 27.gf5 gf5 28.Kh1 Qb7 29.f3 Qb6 30.Qd3 Be5 31.Re5 de5 32.Nb3 Qg1 0–1. kaasparov – humanonly (1650), kurnik, 2014.

4.e3 Nd7 ½–½. Huelle,Gunter (1795) – Dietzel,Uwe, Leipzig VfB op, 2008.

4.e3 e5 5.Nc3 Bf5 (5...Nf6 6.d4=) 6.Nf3 (6.e4 Bg6=) 6...Be7 (6...Nf6 7.d3=) 7.e4 (7.d4 a5+=) 7...Bg4= 8.d3 Nd7 (8...Bh4 9.g3 Be7 10.h3 Bf3 11.Qf3+=) 9.Be3 (9.Be2 Ngf6+=) 9...Qc7 (9...Qd8 10.Be2=) 10.Be2 (10.h3 Bh5+=) 10...Ngf6 (10...f5 11.Ng5 Bg5 12.Bg5 Be2 13.Qe2+=) 11.Qb3 (11.0–0 0–0+=) 11...h6 (11...0–0 12.0–0+=) 12.h3 (12.0–0 0–0+=) 12...Be6 (12...Bf3 13.Bf3 Nh7 14.0–0=) 13.0–0 g5 (13...b5 14.d4 Nb6 15.d5 bc4 16.Bb6 cb3 17.Bc7 cd5 18.ed5 Nd5 19.Nd5 Bd5 20.Rad1+/–) 14.d4 Nf8 (14...g4 15.hg4 Bg4 16.Rfd1+=) 15.Nh2 (15.d5 Bc8+=) 15...Ng6+= 16.Rfd1 (16.d5 Bd7+=) 16...Nf4 17.Bf4 gf4 18.de5 (18.Nf3 Rg8 19.Kh2 0–0–0+=) 18...de5 19.Ng4 (19.Rac1 Bd7+=) 19...Nd7 (19...Ng4 20.Bg4 Bg4 21.hg4+=) 20.Rac1= h5 21.Nh2 Qb6 (21...Bd6=) 22.Qb2 (22.Nd5 Qd8+=) 22...Bh4 (22...Rg8 23.Kf1+=) 23.c5 (23.Bd3 Rg8 24.Nf3 Be7+=) 23...Nc5+= 24.Nd5 (24.bc5 A pinning theme 24...Qb2) 24...Bf2! (24...cd5 25.Rc5 Bf6 26.ed5+/–) 25.Kf1 (25.Kf2 Decoy theme: f2 25...Ne4 Discovered attack) 25...cd5 26.Rc5 (26.Bf3 Bd4 27.Rd4 Na4–+ (27...ed4?! 28.Rc5 de4 29.Qd4–+)) 26...Bc5 27.Qe5 Bg1 (27...Bg1 28.Qf4 de4 29.Bb5 Kf8–+) 0–1. Finenko – Terentiev, Soviet Union, 1987.

3.a3 e6

4.Bb2 f6 5.e3 a5 6.b5 cb5 7.cb5 d5 8.a4 Bb4 9.Nf3 Ne7 10.Be2 0–0 11.0–0 Nd7 12.Qc2 g6 13.Nd4 e5 14.Nf3 Nf5 15.e4 Nd4 16.Bd4 ed4 17.ed5 Nc5 18.Bc4 Ne4 19.d3 Nd6 20.Nbd2 Bf5 21.Nh4 Rac8 22.Nf5 Nf5 23.Ne4 Kg7 24.Qb3 Nd6 25.Ng3 f5 26.Ne2 g5 27.f4 g4 28.Ng3 Kg6 29.Rfe1 Rce8 30.Re6 Rf6 31.Rae1 Ree6 32.Re6 Re6 33.de6 Kf6 34.Bd5 Ke7 35.Nh5 Qc7 36.Qb2 Qc3 37.Qc3 dc3 38.Bb3 b6 39.Ng3 Ne8 40.Ne2 Ng7 41.Nd4 h5 42.g3 Ne8 43.Nf5 Kf6 44.Nd4 Nd6 45.Kf2 Nf5 46.Nc6 Nd4 47.Nd4 Ke7 48.Ke3 Bc5 49.Ke4 Kd6 50.f5 Ke7 51.Nc6 Kd6 52.e7 Bg1 53.e8Q Bh2 54.Qe6 Kc7 0–1. avinoam – juro5, kurnik, 2013.

4.Nc3 a5 5.c5 Qc7 6.Bb2 Nf6 7.d4 d6 8.e4 Nbd7 (8...ab4 9.ab4 Ra1 10.Ba1 dc5 11.dc5+=) 9.Bd3 (9.cd6 Qd6 10.e5 Ne5 11.de5 Qe5 12.Nge2 ab4 13.ab4 Ra1 14.Qa1 Bb4=) 9...Be7 (9...ab4 10.ab4 Ra1 11.Qa1=) 10.Nge2 (10.cd6 Qd6 11.e5 Ne5 12.de5 Qe5 13.Kf1 ab4 14.ab4 Ra1 15.Ba1 Qd6+/–) 10...b6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0–0?? (better is 11.cd6 Bd6 12.e5 Ne5 13.de5 Be5 14.Rc1+–) 11...bc5+= 12.bc5 dc5 13.e5 Nd5 14.Qc2 cd4 (14...Ba6!?–/+) 15.Nd5= ed5 16.e6 (16.Bd4 c5 17.Nf4 Bb7+= (worse is 17...Ne5 18.Nd5 Qd6 19.Bb5 Kf8 20.Ne7+/–)) 16...fe6–/+ 17.Nd4 Ne5 (17...Nc5 18.Bh7 e5 19.Qg6 Kd7 20.Nf5=) 18.Bh7 (18.Nb5 Qb7 19.Be5 cb5 20.Bg7 Rg8+=) 18...Ng4 (18...Rb8!? 19.Rab1 Bd6–/+) 19.Qg6 Attacking the backward pawn on e6 19...Kd8 20.Qg4 Rh7 21.g3 (21.Nf3 Bd6 22.Qg5 Qe7+=) 21...e5 (21...Qd6!? 22.Qg6 Rh3 23.Qg7 c5=) 22.Ne6+= 1–0. mic (2145) – pawnraider (2275), net–chess.com, 2009.

4.c5 Qc7

5.Bb2 f6 6.e3 b6 7.Qh5 g6 8.Qf3 Bg7 9.d4 a5 10.Nc3 ab4 11.ab4 Ra1 12.Ba1 b5 13.Bd3 Qd8 14.Nge2 Nh6 15.0–0 0–0 16.Ng3 Nf7 17.Nce4 f5 18.Nd6 Nd6 19.cd6 Na6 20.Bc3 Qg5 21.e4 fe4 22.Qe4 Qd5 23.Qd5 ed5 24.f4 h6 25.f5 g5 26.Nh5 Bb7 27.f6 Bh8 28.Bg6 Nb8 29.f7 Rf7 30.Bf7 Kh7 31.Be8 Kg8 32.Nf6 Bf6 33.Rf6 Kg7 34.Rf7 Kg8 35.Re7 Kf8 36.Bd7 Nd7 37.Rd7 Bc8 38.Rc7 Bf5 39.Rc6 Be4 40.Rb6 Ke8 41.Rb5 Kd7 42.Rb6 h5 43.b5 g4 44.g3 Bf3 45.Kf2 Be4 46.Ke3 Bg2 47.Kf4 Bf1 48.Kg5 Bb5 49.Kh5 Be2 50.Kg5 Bf3 51.Bb4 Be2 52.Bc5 Bf3 53.Rb7 Kc6 54.Rc7 Kb5 55.d7 1–0. avinoam – juro5, kurnik, 2013.

5.e3 a5 6.Bb2 b6 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 bc5 10.bc5 Na6 11.d4 Nf6 12.Be2 d6 13.cd6 Bd6 14.0–0 0–0 15.Nbd2 Nb4 16.e4 Be7 17.e5 (17.Bc3 Rd8+=) 17...Nfd5= 18.Bc4 Ba6 19.Qb3 Rb8 20.Rc1 Nf4 21.Ba6 Na6 22.Qe3 Nd5 23.Qe4 Nab4 24.Nb3 Qa7 25.g3? (25.Rb1 Na2 26.Qd3 Rb5=) 25...Qa3 (better is 25...Na2 26.Rb1 Nac3 27.Bc3 Nc3–+) 26.Rb1+= h6 27.Nfd2 Qa6 28.Nc5 Qa2 29.Ndb3 1–0. avinoam – mikolajm1, playok.com, 2012.

5.e3 b6 6.d4 a5 7.Bb2 ab4 8.ab4 Ra1 9.Ba1 bc5 10.bc5 Nf6 11.Nf3 d6 12.Qc2 dc5 13.dc5 Nbd7 14.Bf6 gf6 15.Be2 Qa5 16.Nbd2 Qc5 17.Qc5 Bc5 18.0–0 Bb4 19.Ne4 f5 20.Neg5 h6 21.Nh3 c5 22.Nf4 Ke7 23.Bc4 Bb7 24.Ne1 Ne5 25.Bb5 Bc6 26.Be2 Rg8 27.g3 Ng6 28.Nfd3 Rb8 29.Nc2 Be4 30.Ncb4 cb4 31.Nc5 Bd5 32.Bd3 Ne5 33.Be2 Nf3 34.Bf3 Bf3 35.Rb1 Bd5 36.Na6 Rb6 37.Nb4 Rb5 38.Rb2 Be4 39.Nc6 Bc6 40.Rd2 Rb1 0–1. avinoam – tyop (1765), kurnik, 2013.

3.a3 Nf6

4.Bb2 a5 5.e3 (5.c5 Qc7 6.Nf3 ab4 7.Qb3 d6 8.cd6 Qd6 9.Qb4 Qb4 10.ab4 Ra1) 5...ab4 (5...d6 6.Bd4 Qc7 7.Nf3 Nbd7 8.Bf6 Nf6 9.Nc3 g6 10.Bd3 Bg7) 6.c5 Qc5?? (better is 6...Qc7= 7.Nf3 d6 8.ab4 Ra1 9.Ba1 Na6 10.Bf6 ef6) 7.ab4+– Ra1 8.bc5 Ra2 9.Qb3 Ra8 10.Bf6 ef6 11.d4 Na6 12.Bc4 d5 13.cd6! Bd6 14.Bf7 Kf8 15.Nf3 Bb4 16.Nbd2 Ke7 17.Bc4 b5 18.Bd3 Be6 19.Qb2 Bd6 20.0–0 Nc7 21.e4 Ra2 22.Qb1 Rha8 23.e5 fe5 24.de5 Bc5 25.Ne4 Bb6 (25...Ba3 26.Nd4 Bd5 27.Nc3+–) 26.Qb4 c5 (26...Ke8 27.Nd6 Kd8 28.Qh4 Kd7 29.Qh7+–) 27.Nc5 Nd5 (27...Ba5 28.Qh4 Kf8 29.Bh7 Bf7+–) 28.Qb5 (better is 28.Qh4 Kf8 29.Ne6 Kf7 30.Neg5 Ke7 31.Nh7 Kd7 32.Bb5 Kc8 33.Qg4 Kb8 34.Qg6 Bf2 35.Rf2 Rf2 36.Qd6 Nc7 37.Bc6+–) 28...R8a5 29.Qb3 Bc5 30.Qb7 Kf8 (30...Bd7 A) 31.Bh7?! Rb5 32.Qd5 Bf2 33.Rf2 Ra1 (33...Rd5?? 34.Ra2 Bg4 35.Ra7 Rd7 36.Rd7 Bd7 37.Be4+–) 34.Rf1 Rf1 (34...Rd5 35.Ra1 Bg4 36.Ra7 Rd7 37.Rd7 Bd7 38.Kf2+–) 35.Kf1 Rd5+=; B) 31.e6 Ke6 32.Re1 Be3 33.fe3+–) 31.Bh7 (31.Ng5 Nf4 32.Bf5 Ra1 33.Ne6 Ne6 34.Qc8 Ke7 35.Qe6 Kf8 36.Qc8 Kf7 37.Qd7 Be7 38.Be6 Kg6 39.Qe7 R5a4+–) 31...Ra8 (31...Nf4 32.Ng5 Bc4+–) 32.Ng5 Nf4 33.Qf3 (33.Qf3 Ke7 34.Ne6 Ne6 35.Qb7 Kf8 36.Bg6+–) 1–0. druhynejhorsi (1775) – alkemisti (1870), kurnik, 2011.

4.Bb2 Ne4 5.e3 f5 (5...d6 6.d4+=) 6.c5 (6.Qh5!? g6 7.Qh4+/–) 6...Qc7 7.Nf3 b6 (7...e6!?+=) 8.cb6 Qb6 9.Nc3 (9.Nh4 Nf6 10.Bf6 ef6 11.Qh5 Ke7 12.Nf5 Kd8 13.Ng7 Bg7+–) 9...d5 10.d3 Nc3 11.Bc3 Nd7 12.Be2 Bb7 13.0–0 0–0–0? (better is 13...c5+/–) 14.Rc1 Nf6 15.Bd4 Qa6 16.Qb3 Kb8 (16...e6 17.Ne5 Rg8 18.b5 Qa3 19.Qc2+–) 17.a4 (better is 17.Rc5 Qb6 18.Ne5 Rc8+–) 17...Bc8? (17...e6+–) 18.b5 Qb7 (18...cb5 19.Ne5 Rd7 20.ab5+–) 19.Rc6 (better is 19.bc6 Rd6 20.cb7 Bb7 21.Be5+–) 19...Bd7 (19...Ng4 20.Ra6 Qd7 21.Ra7+–) 20.Ra6 Rc8 21.Ra7 Qa7 22.Ba7 Ka7 23.d4 Rb8 24.Ne5 e6 25.a5 (better is 25.Qc3 Ba3+–) 25...Ne4 (25...Rc8+–) 26.b6 Kb7 27.Nd7 Rd8 28.Qb5 (28.Ba6 Ka6 29.b7 Bb4 30.Qb4 Rd7 31.Qb6) 28...Nd6 (28...Rc8 29.a6 Ka8 30.b7 Ka7 31.Qb6) 29.a6 (29.Qa6 Kc6 30.Ne5) 29...Ka8 30.Qc6 Nb7 31.Qb7 1–0. Fournier,Frederic (1835) – an3, Active, 2011.

4.Nc3 A) 4...d5 5.Nf3 Bg4 (5...dc4 6.e3 Qa6 7.Qe2 b5 8.Bb2 e5 9.d3 cd3 10.Qd3 Nbd7; 5...a5 6.Na4 Qc7 7.Bb2 ab4 8.cd5 Nd5 9.e4 Nf6 10.Be5 Qa5) 6.Qb3 e6 7.Bb2 Nbd7 8.Na4 Qd8 9.cd5 cd5 10.h3 Bf3; B) 4...Na6 B1) 5.d3 d6 (5...d5 6.c5 Qc7 7.Nf3 Bf5 8.Qb3 0–0–0 9.d4 Ne4 10.Ne5 Nc3; 5...c5 6.b5 Nc7 7.Nf3 a6 8.ba6 Qa6 9.Qb3 d6 10.g3 Bd7; 5...g6 6.Nf3 Bg7 7.Bf4 d6 8.d4 0–0 9.c5 dc5 10.dc5 Qd8) 6.Nf3 Bd7 7.d4 Bf5 8.e3 g6 9.Bd3 Bg7 10.Bf5 gf5; B2) 5.c5 Qc7 6.Nf3 g6 7.d4 Bg7 8.Qb3 0–0 9.b5 cb5 10.Bd2 d6; B3) 5.d4 d5 6.c5 Qc7 7.Nf3 Ne4 8.Ne4 de4 9.Ng5 Bf5 10.Qc2 g6; B4) 5.Qc2 g6 (5...d5 6.Nf3 g6 7.cd5 cd5 8.Ne5 Qe6 9.Qa4 Bd7 10.Nd7 Qd7; 5...c5 6.Na4 Qd6 7.b5 Nc7 8.Nf3 Ne6 9.e3 g6 10.Bb2 Qc7) 6.c5 Qc7 7.Nf3 Bg7 8.e3 0–0 9.d4 d6 10.Bd3 dc5; B5) 5.Nf3 d5 (5...d6 6.d4 Bf5 7.c5 dc5 8.bc5 Qc7 9.g3 0–0–0 10.Bf4 Qa5; 5...c5 6.b5 Nc7 7.Bb2 Qe6 8.e3 d5 9.Be2 dc4 10.Qa4 a6) 6.cd5 cd5 7.e3 Bg4 8.Qa4 Bd7 9.Bb5 Qd6 10.0–0 Nc7; C) 4...d6 5.Nf3 a5 (5...Bg4 6.h3 Bf3 7.gf3 Nbd7 8.d4 g6 9.Bf4 e5 10.Be3 Qc7) 6.c5 Qc7 7.cd6 Qd6 8.b5 Nbd7 9.bc6 bc6 10.d4 Nd5; D) 4...a5 5.c5 (5.Qa4 Na6 6.ba5 Qa7 7.Qc2 Qc5 8.Nf3 Qa5 9.Bb2 Nc5 10.e3 d6; 5.Na4 Qc7 6.c5 ab4 7.Nf3 d5 8.Nb6 Ra5 9.Bb2 ba3 10.Be5 Qd8; 5.b5 d5 6.bc6 Qc6 7.cd5 Nd5 8.Bb2 Nc3 9.Bc3 Qd5 10.Nf3 Nc6) 5...Qc7 6.Qa4 d6 7.Nf3 Nbd7 8.cd6 Qd6 9.ba5 b6 10.Qh4 Ra5.

4.c5 A) 4...Qc7 A1) 5.Nf3 d5 (5...a5 6.Qa4 d6 7.cd6 Qd6 8.ba5 Qc5 9.Nc3 Nbd7 10.Bb2 Ra5; 5...d6 6.cd6 Qd6 7.Nc3 Bg4 8.h3 Bf3 9.gf3 Nbd7 10.d3 Nb6; 5...Na6 6.Nc3 g6 7.Bb2 Bg7 8.Ne4 0–0 9.Be5 Qd8 10.Nf6 Bf6; 5...g6 6.Nc3 Na6 7.Bb2 Bg7 8.Ne4 0–0 9.Be5 Qd8 10.Nf6 Bf6; 5...b5 6.Bb2 a5 7.Be5 d6 8.cd6 ed6 9.Bf6 gf6 10.Nc3 Be6; 5...b6 6.Nc3 bc5 7.bc5 Qa5 8.Rb1 Na6 9.Qa4 Qa4 10.Na4 e5) 6.Nc3 Bg4 7.h3 Bf3 8.ef3 Nbd7 9.d4 e5 10.Be2 Be7; A2) 5.Nc3 a5 (5...d5 6.Nf3 Bg4 7.h3 Bf3 8.ef3 Nbd7 9.d4 e5 10.Be2 Be7; 5...d6 6.cd6 Qd6 7.Nf3 Bg4 8.h3 Bf3 9.gf3 Nbd7 10.d3 Nb6) 6.Qa4 d6 7.cd6 Qd6 8.ba5 Nbd7 9.Nf3 b6 10.Nd4 b5; B) 4...Qd8 B1) 5.Nf3 a5 6.Bb2 ab4 7.ab4 Ra1 8.Ba1 Na6 9.Bf6 ef6 10.Qa4 b5; B2) 5.e3 a5 (5...d5 6.Nf3 a5 7.Bb2 ab4 8.ab4 Ra1 9.Ba1 Bg4 10.h3 Bh5; 5...d6 6.Nc3 dc5 7.Nf3 Nbd7 8.Bb2 e6 9.b5 Bd6 10.bc6 bc6) 6.Bb2 ab4 7.Nf3 Nd5 8.e4 Nf6 9.ab4 Ra1 10.Ba1 Ne4; B3) 5.Bb2 b6 (5...d6 6.Nf3 dc5 7.bc5 Qa5 8.Nc3 Qc5 9.e4 Bg4 10.Be2 Nbd7) 6.cb6 ab6 7.Nf3 c5 8.Nc3 Nc6 9.e3 Bb7 10.Bc4 e6; B4) 5.Nc3 a5 (5...d6 6.Nf3 dc5 7.bc5 Qa5 8.Qb3 Qc5 9.d4 Qb6 10.Qc2 Nbd7; 5...b6 6.Nf3 bc5 7.bc5 Qa5 8.Qb3 Na6 9.Ne5 e6 10.d4 Ne4) 6.Bb2 ab4 7.ab4 Ra1 8.Qa1 d6 9.Nf3 Na6 10.Qa3 e5.

4.Nf3 A) 4...d6 5.Nc3 (5.d4 a5 6.c5 Qd8 7.Qa4 Na6 8.b5 cb5 9.Qb5 Qd7 10.Qc4 Qc6) 5...a5 (5...Bf5 6.Na4 Qc7 7.Nd4 Bg6 8.d3 e5 9.Nf3 Nbd7 10.g3 b5) 6.Qa4 Nbd7 7.d4 Qc7 8.Qb3 ab4 9.Qb4 c5 10.Qb5 cd4; B) 4...d5 B1) 5.c5 Qc7 6.Nc3 Bg4 7.h3 Bf3 8.ef3 Nbd7 9.d4 e5 10.Be2 Be7; B2) 5.Nc3 a5 (5...dc4 6.e3 Be6 7.Ng5 Bd5 8.e4 h6 9.ed5 hg5 10.Bc4 Qd4; 5...Bg4 6.Ne5 Bf5 7.cd5 cd5 8.e3 Nc6 9.Bb5 e6 10.g4 Bg6) 6.c5 Qc7 7.b5 Nbd7 8.d4 e5 9.b6 Qb8 10.g3 Be7; B3) 5.d3 dc4 (5...a5 6.Be3 Qc7 7.Nc3 dc4 8.dc4 Nbd7 9.h3 e6 10.c5 Be7) 6.dc4 Na6 7.Bf4 Nh5 8.Be3 Qc7 9.Nc3 Bf5 10.Qa4 e6; B4) 5.e3 a5 (5...Bg4 6.Nc3 Nbd7 7.Bb2 Bf3 8.Qf3 dc4 9.Ne4 Qb5 10.Nf6 gf6) 6.ba5 Qa5 7.Nc3 Nbd7 8.cd5 Nd5 9.Bb2 Nc3 10.Bc3 Qd5; B5) 5.Bb2 dc4 6.e3 Be6 7.Qc2 a5 8.Bd4 Qb5 9.Nc3 Qa6 10.Ne4 Ne4; C) 4...Na6 C1) 5.Nc3 d6 6.d3 Bf5 7.e4 Bd7 8.Be3 c5 9.b5 Nb8 10.Be2 a6; C2) 5.d4 d6 (5...d5 6.c5 Qd8 7.Nc3 Bf5 8.e3 Nc7 9.Bd3 g6 10.Bf5 gf5) 6.Nc3 Bf5 7.e3 g6 8.Bd3 Bh6 9.e4 Bc1 10.ef5 Bh6; C3) 5.c5 Qc7 (5...Qd8 6.Nc3 d6 7.d4 Bf5 8.Nh4 Be6 9.e4 d5 10.f3 de4) 6.Nc3 g6 7.Bb2 Bg7 8.Ne4 0–0 9.Be5 Qd8 10.Nf6 Bf6; D) 4...a5 D1) 5.Qa4 Ra7 (5...Na6 6.ba5 Nc5 7.ab6 Na4 8.Nc3 Nb6 9.d3 e6 10.e4 Na4) 6.b5 Ne4 7.d4 d5 8.bc6 Qc6 9.Qc6 bc6 10.Nbd2 Rb7; D2) 5.c5 Qd8 6.Nc3 ab4 7.Na4 d6 8.ab4 Nbd7 9.Qc2 Nd5 10.cd6 ed6.

4.Bb2 c5

5.b5 a6 6.e3 d6 7.Nf3 g6 (7...ab5 8.Qb3=) 8.Be2 Bg7 9.0–0 0–0 10.d4 Bd7 11.dc5 dc5 12.a4 ab5 13.ab5 Ra1 14.Ba1 Be6 15.Nbd2 Rd8 16.Qc2 Nbd7 17.Ne4 Ne4 18.Qe4 Nf6 19.Qc2 Bf5 20.Qb3 h6 21.h3 g5 22.Rd1 Rd1 23.Qd1 Be6 24.Ne5 Qd6 25.Bf3?? (25.Qb1!?+=) 25...b6 (25...Ne8!?–/+) 26.Nc6 Bc4 27.Qa4 Bd5 28.Qa8 Kh7 29.Be5?? (29.Bf6 Bf6 (worse is 29...ef6 30.Bd5 Qd5 31.Qg8 Kg8 32.Ne7 Kf8 33.Nd5+=) 30.Bd5 Qd5–/+) 29...Qe5!? 30.Ne5 Ba8 31.Ba8 Kg8 0–1. barborski – wolnygracz, kurnik, 2012.

5.b5 d5 (5...d6 6.Nf3 Bf5 7.Bf6 gf6 8.Nc3 Nd7 9.e4 Be6 10.Nd5 Bd5; 5...a6 6.Qa4 d5 7.Nf3 Nbd7 8.e3 Qd6 9.cd5 Nb6 10.Qc2 Nfd5) 6.Nc3 dc4 7.Nf3 a6 8.Qa4 Qd6 9.ba6 Bd7 10.Qc4 Na6.

5.Nf3 cb4 6.Bd4 Qc7 7.ab4 Nc6 8.Na3 Nd4 9.Nd4 e5 10.Nab5 Qb8.

5.Bf6 Qf6 (5...ef6 6.Nc3 Nc6 7.Nd5 Qd8 8.Qb3 Be7 9.Nf3 0–0 10.e3 cb4) 6.Nc3 cb4 7.ab4 Nc6 8.b5 Nb4 9.Ra4 e6 10.Qb1 Qe7.

4.Bb2 e6

5.Qc2 a5 (5...c5 6.b5 a6 7.Nc3 ab5 8.Nb5 Be7 9.Rb1 0–0 10.Nf3 Nc6) 6.c5 Qd8 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 Na6 10.Qb3 Nd5.

5.Nc3 a5 6.c5 Qc7 7.Nf3 ab4 8.ab4 Ra1 9.Qa1 Na6 10.Qa4 b5.

5.d4 c5 (5...a5 6.c5 Qc7 7.Nf3 ab4 8.Nbd2 ba3 9.Ba3 b5 10.Ne5 Ra4) 6.Nf3 Nc6 7.d5 ed5 8.cd5 Na5 9.Nbd2 cb4 10.Bd4 Qd8.

5.e3 a5 6.Bf6 gf6 7.c5 (7.Qa4 Ra7 8.b5 cb5 9.cb5 d5+=) 7...Qc7 (7...Qa7!?+=) 8.Nc3+= d6 9.d4 Rg8 10.Nf3 d5 11.g3 e5 12.Bg2 Bg4 13.Qb3 ab4 14.Qb4 b5 15.0–0 Nd7 (15...Na6 16.Qb1=) 16.a4+= ba4 17.Ra4 Ra4 18.Qa4 e4 (18...Qc8 19.Ra1+=) 19.Nd2 Ke7 20.Ra1 Bh6 21.Nb3 Rb8? (better is 21...Rc8+/–) 22.Na5+– Rc8 23.Rb1 f5 (23...Kf8 24.Rb7 Nc5 25.dc5 Qe5 26.Ne4 de4 27.Qe4 Qe4 28.Be4 f5 29.Bc6 Bg5+–) 24.Rb7 (24.Rb7 Qb7 25.Nb7+–) 1–0. druhynejhorsi (1850) – nyeki (1840), kurnik, 2012.

5.Nf3 a5 6.Bd4 c5 7.Bf6 gf6 8.b5 d6 9.Nc3 Nd7 10.Qc2 f5.

5.Nh3 d5 (5...Be7 6.Nc3 Na6 7.c5 Qc7 8.e3 0–0 9.Bd3 d6 10.cd6 Qd6; 5...Na6 6.c5 Qc7 7.Nc3 b6 8.d4 Be7 9.Ng5 0–0 10.e3 h6; 5...c5 6.b5 a6 7.Nc3 ab5 8.Nb5 Nc6 9.e3 Be7 10.Bd3 d5) 6.Nc3 dc4 7.e3 Nbd7 8.Bc4 Bd6 9.f4 a5 10.b5 0–0.

3.Qb3 a5

4.a3 ab4 5.c5? (better is 5.Bb2=) 5...Qc5–+ 6.ab4?? (better is 6.Bb2–+) 6...Qc1 (6...Qc1 7.Qd1 Qd1 (7...Ra1?! 8.Qc1 e6 9.e3+=) 8.Kd1 Ra1–+) 0–1. De Visser,Arno – Khenkin,I (2620), AKN Open, Haarlem NED, 2000.

4.Qa4 Qd4+= 5.Nc3 Qc4 6.ba5 (6.b5 Qb4+=) 6...b5 (6...Qc5 7.Nf3+=) 7.Qc4= bc4 8.e4 Ra5 (8...Ba6 9.Na4=) 9.Bc4+= Ba6?? (better is 9...Na6+=) 10.Rb1+– Bb5 11.a4 (11.Nb5?! cb5 12.Rb5 Rb5 13.Bb5 Nf6+–; 11.Rb5?! cb5 12.Nb5 Nc6=; 11.Bb5?! cb5 12.a4 b4 13.Rb4 Nc6+–) 11...d5 (11...f5 12.ab5 (12.Bb5?! cb5 13.d3 g6+–; 12.Rb5?! cb5 13.Bb5 fe4=; 12.Nb5?! cb5 13.ab5 fe4+–) 12...fe4 13.f3+–) 12.ed5 (12.Nb5?! Nd7 13.ed5 cb5 14.Bb5 Ngf6+–; 12.Rb5?! cb5 13.Bb5 Nd7 14.Nd5 e6+=; 12.ab5?! dc4 13.b6 e6+/–; 12.Bb5?! cb5 13.ed5 Nf6+–) 12...Bc4 13.Rb8 Kd7 14.dc6 Kc6 15.Rc8 (15.Rf8 Bd5 16.Nd5 Kd5+–) 15...Kd7 16.Rc4 e6 17.Nge2 (17.Nb5 Nf6+–) 17...Nf6 18.d4 Nd5 19.Bd2 (better is 19.Bf4 Ra7 20.Nb5+–) 19...Bb4 (19...Nb6 20.Rc5 Bc5+–) 20.Nd5 Bd2 21.Kd2 ed5 22.Rb4 (22.Rb4 Rc8 23.Rhb1+–) 1–0. Herm,Florian – Trimpin,Claus, Baden–ch AT2, 2002.

4.b5 Nf6 5.Nc3 e6 6.Na4 Qd4 (6...Qd8!?=) 7.Bb2+/– Qa7 8.b6 Qa6 9.e3 c5 10.Nf3 Nc6 11.d4 d6 12.Be2 Bd7 13.0–0 Rd8 14.dc5 dc5 15.Ne5 Be7 16.Rad1 (16.Nd7 Nd7 17.Bg7 Rg8+–) 16...0–0 (16...Ne5 17.Be5 0–0 18.Bc7+=) 17.Nd7 (17.Nd3 Nb4 18.Nac5 Qb6 19.Bf6 gf6 20.Nd7 Rd7+–) 17...Rd7 (17...Nd7 18.Rd2+=) 18.Bf3+/– Rfd8 (18...Nb8 19.Bf6 gf6 20.Qb5 Qb5 21.cb5+/–) 19.Rd7 (19.Bf6 gf6 20.Rd7 Rd7 21.Bc6 bc6+–) 19...Rd7 (19...Nd7 20.Bc6 bc6+/–) 20.Rd1 (better is 20.Bf6!? gf6 21.Bc6 bc6 22.Rb1+–) 20...Rd1+= 21.Bd1 h6 (21...Nd7 22.a3+=) 22.f3 (22.Bf3!? Nd8 23.Qd3+/–) 22...Nd7+= 23.Kf2 (23.a3 Bd8+=) 23...Nb4 (23...Bd8!?+=) 24.a3+= Nc6 25.f4 g5 (better is 25...Bd8!?=) 26.Bf3+/– Nd8 27.g3 Bd6?? (27...gf4 28.gf4 Kf8 29.Kg2+/–) 28.Qc3 (better is 28.Qd3 Bf8 29.Qd7 Qc4 30.Qd8 Qa4 31.Qf6 Qc2 32.Ke1+–) 28...f6?? (better is 28...Kf8+/–) 29.Qd3+– (29.Qd3 Nf8 30.Qd6 Qc4 31.Qd8 Qa4 32.Qf6 Qc2 33.Ke1 Qb1 34.Kd2+–) 1–0. wybitnytalent (1635) – peterhof, kurnik, 2011.

4.ba5 Qa5

5.Bb2 Na6 =.

5.Bb2 d5 =.

5.Bb2 d6 6.Bc3 Qc7 7.e3 e5 8.Ne2 Be6 9.Ng3 f5 10.Qc2 Qf7 11.d3 Nf6 12.Nd2 Nbd7 13.Be2 Be7 14.0–0 0–0 15.a4 h5 (15...b6 16.f4 Qg6 17.Rae1=) 16.Bf3 (16.Nf3 Qg6=) 16...g5 (16...h4 17.Nh1=) 17.e4 (17.Rfb1!? g4 18.Be2=) 17...f4+= 18.Nf5 Bf5 19.ef5 Ne8 (19...g4 20.Be2=) 20.d4 Ng7 21.d5 c5 22.Be4 Qf6 23.Rfb1 Rab8 24.a5 g4 25.Rb5 (25.Qa4 Rfd8 26.a6 b6+–) 25...Bd8 (25...Nf5 26.Rab1 Nd4 27.Bd4 cd4 28.Bh7 Kh8 29.Rb7 Rb7 30.Rb7+=) 26.Rab1 (26.Qb1 b6+/–) 26...b6 27.Qa4 Ra8 28.R5b2 Nb8 (28...Ra7!?+/–) 29.Qc2+– Rf7 30.ab6 Rb7 31.Ra2 Ra2 32.Qa2 Bb6? (better is 32...Rb6 33.Qa8 Rb1 34.Nb1 Bc7+/–) 33.Qa8+– Qf7 34.Ba5 (better is 34.Be5 Ne8 35.Bf4+–) 34...Qc7+/– 35.Rb6 (35.Bc2!?+/–) 35...Rb6+= 36.Bb6 Qb6 37.Qa4 Kf7 38.Qb5 (38.Bd3 Ke7+=) 38...Qa7 39.Nb3 (39.Qb1 Nd7+=) 39...Kf6 (39...Ne8 40.Na5=) 40.Na5 h4 (40...Nf5?? 41.Qe8 Kg7 42.Bf5+–) 41.h3 g3 42.f3 Ke7 (42...Nf5? 43.Qe8 Nd7 44.Qe6 Kg7 45.Qf5+–) 43.Qb7 (better is 43.Bc2!?=) 43...Qb7–/+ 44.Nb7 Ne8 (44...Nd7 45.Bc2–/+) 45.Bc2 Na6 46.Ba4 Nf6 47.Kf1 Nb4 48.Ke2 Na2 49.Kd3?? (49.Bc2 Nc3 50.Kf1 e4–/+) 49...Nh7 (better is 49...e4 50.Ke2 Nc3 51.Kf1 Na4 52.fe4 Ne4–+) 50.Kc2–/+ Nf6 51.Kb2?? (better is 51.Kd3=) 51...Nb4–+ 52.Bc2 (52.Kc3 Ne4 53.Kb3 Nd2 54.Kc3–+) 52...Nc2 53.Kc2 e4 54.fe4 Ne4 55.Kd3 f3! (55...f3 56.gf3 g2 57.fe4 g1Q–+) 0–1. Pruvost,Alain – Jimenez,Mart (1795), 8th Open, La Fere FRA, 2009.

5.Bb2 e5 6.e3 =+.

5.Bb2 Nf6 6.Nf3 Na6 7.Nc3 Nc5 8.Qc2 d6 9.e3 g6 10.Be2 Bg7 11.0–0 0–0 12.Nh4 Na4 13.Na4=+ Qa4 14.Qb3 b5 15.d4 Be6 16.Qa4 Ra4 17.cb5 cb5 18.a3 Bc4=+ 19.Bc4 bc4 20.Rfc1 Rb8 21.Bc3 Nd5 22.Kf1 Rb3–/+ 23.Bb4 Nb4 24.ab4 Rbb4 25.Ra4 Ra4 26.Nf3 e6 27.Ke2 Ra2–+ 28.Nd2 d5 29.Kd1 Bf8 30.Rc2 Ra4 31.Nf3 f6 32.Ke2 Bb4 33.g4 g5 34.Kd1 Kf7 35.Ke2 Ke7 36.Nd2 Kd6 37.f4 h6 38.Nf3 Ra1 39.Kf2 Kc6 40.Kg2 Kb5 41.Nd2 Bd2 (42.Rd2 c3–+) 0–1. Valles,L – Diaz,R, Alfafar–Ateneo, 1991.

5.Nc3 e5 6.e3 Nf6 7.Nf3 Be7 8.Be2 0–0 9.Bb2 d5 (9...e4 10.Nd4=) 10.cd5 (10.Ne5 dc4 11.Nc4 Qg5+=) 10...Nd5 (better is 10...e4!? 11.Ne5 cd5=) 11.Nd5+/– cd5 12.Ne5 Bb4 13.Bc3 Bc3 14.Qc3 Qc3 15.dc3 Nc6 16.Nc6 bc6 17.c4 Ra3 18.cd5 cd5 19.Kd2 Be6 20.Rhb1 Rfa8 21.Rb2 d4 22.ed4 Ra2 23.Rba2 Ra2 24.Ra2 Ba2 25.Ke3 Bd5 26.Bf3 Ba2 27.d5 Kf8 28.Kd4 Ke7 29.Kc5 Kd7 30.Bg4 Kc7 31.d6 Kd8 32.Kc6 g6 33.f4 f5 34.Bf3 Be6 35.Bd5 Bd7 36.Kc5 h6 37.h4 Be8 38.Bf3 Bf7 39.g4 Be6 40.g5 h5 (40...hg5 41.hg5 Bf7+–) 41.Bd5 Bd7 42.Bf7 Be8 (42...Bc8 43.Bg6 Be6 44.Bh5 Kd7+–) 43.Be8 Ke8 44.Kc6 (44.Kc6 Kd8 45.d7 Ke7 46.Kc7 Kf8 47.Kd6 Kf7 48.d8Q Kg7 49.Qe7 Kh8 50.Ke5 Kg8 51.Kf6 Kh8 52.Qg7#) 1–0. Rush,Bradley – Winter,Malcolm, 65. LSS No Engine Cup Preliminary, 2012.

5.Nf3 e5 =.

5.Nc3 Nf6

6.e3 e5 7.Bb2 Ba3 (7...d6 8.Nf3=) 8.Nf3 (8.Ba3 Qa3 9.Qa3 Ra3=) 8...Bb2 9.Qb2 0–0 (9...d6 10.Bd3=) 10.Be2 d6 11.e4 (11.0–0 Re8=) 11...d5 (11...Nbd7!?+=) 12.cd5 (12.ed5 Re8=) 12...cd5 13.ed5 Nd5 (13...Re8 14.Bb5 Bd7 15.Rb1=) 14.Nd5+= (worse is 14.Ne5 Nf4 15.Qb5 Qd8+=) 14...Qd5 15.Qe5 Qe5 (15...Qd7 16.0–0+/–) 16.Ne5+/– Re8 17.Nc4 (17.d4 Nc6 18.Nc6 bc6+=) 17...Nc6+= 18.Ne3 Nd4 19.Bd3 (better is 19.h4!?+=) 19...Ra3+= 20.Be2 b5 21.Bd1 (21.Kd1 Bd7+=) 21...Be6 (21...Bb7 22.f3–/+) 22.0–0 Ra2 23.Ra2 Ba2 24.Bf3 (24.Nc2 Nc2 25.Bc2 b4–/+) 24...Nf3 25.gf3 b4 26.Rc1 b3 27.Nc4 Rc8 28.Rc3 Rb8 (28...f5 29.Nb2 Rd8 30.d3–/+) 29.Nb2 Bb1 (29...Kf8 30.Kf1–/+) 30.d3 (30.Kf1 Kf8–/+) 30...f6 (30...Kf8 31.Kf1–/+) 31.Kf1 Bc2 (31...Rb7 32.Ke2–/+) 32.Ke2 Ra8 33.Kd2 Ra7 (33...Ra1 34.Rc4–/+) 34.f4 Kf7 35.Rc5 Ke7 36.Kc3 Kd6 (36...Rb7 37.d4–/+) 37.d4 Ra1 (37...Rb7!?–/+) 38.Nc4= Kd7 (38...Ke6 39.Nd2=) 39.f5 (39.Na5 Rd1 40.Rb5 Rd3 41.Kc4 Rf3+=) 39...Rf1 (39...Rh1!?+=) 40.Nb6= Ke7 41.Rc7 Kd6 (41...Kf8 42.Rc8 Kf7 43.Rc7 Kg8 44.Rc8 Kf7 45.Rc7 Kf8 46.Rc8 Ke7 47.Rc7 Ke8 48.Rc8 Ke7 49.Rc7=) 42.Rg7 Rf2 43.Nc4 (43.Nc8 Kd5 44.Ne7 Ke4 45.Rh7 Rf3 46.Kb2 Kd4+=) 43...Kc6 44.Rh7 Bd1 (better is 44...Rf3 45.Kb2 Bf5+=) 45.d5+/– Kb5 (45...Kc5 46.Rc7 Kd5 47.Rd7 Kc5 48.Rd1 Rc2 49.Kb3 Rc4 50.Ra1=) 46.Ne3+– Rf3 47.Kd2 (47.Re7 Kc5 48.Rc7 Kb6 49.Rc6 Kb5+/–) 47...Bc2+/– 48.d6 (48.Ke2 Rf4 49.d6 Kc6 (worse is 49...Bf5 50.d7 Bd7 51.Rd7+/–) 50.Nc2 bc2 51.Rc7 Kd6 52.Rc2 Rf5=) 48...Bf5+= 49.Rb7 (49.Nf5 Rf5 50.d7 Rd5 51.Kc3 Kc6+/–) 49...Kc6= 50.Rb3 Be6 51.Rc3 Kd7 ½–½. Dergatschova Daus,Anna (2220) – Naiditsch,Arkadij (2255), Ruhrgebiet VL2, 1997.

6.e3 e5 7.Bb2 d6 8.Nf3 =.

6.e3 e5 7.Nf3 Na6 8.Qa4 Nc7 (8...Qa4 9.Na4 Nb4 10.Nb6–/+) 9.Qa5= Ra5 10.a4 (10.Bb2 e4 11.Nd4 d5=) 10...Ne6 11.d4 ed4 (11...e4 12.Nd2 Bb4 13.Bb2+=) 12.ed4= Bb4 13.Bd2 0–0 14.Bd3 Re8 15.0–0 Nf4 (15...c5 16.d5 Nf4 17.Bf4 Bc3 18.Ra3=) 16.Bf4 Bc3 17.Rac1 Bb4 18.Bc2 d5 19.Bc7 Ra6 20.c5 Ne4 21.Rb1 Ba5 (21...Bc3 22.Rfc1=) 22.Ba5+= Ra5 23.Rfe1 Kf8 (23...Re7 24.Ne5+=) 24.Re3 Ra7 25.Rbe1 Be6 26.Ra1 (26.Be4 de4 27.Re4 h6+=) 26...Rea8 (26...Bg4 27.Ne5 Re5 28.de5 Nc5 29.a5+=) 27.h3 Ra6 (27...Bf5 28.Rae1+=) 28.Rea3 (28.Rae1 Ke7+=) 28...Ra5 (28...Ke7 29.Re3=) 29.Kf1 (29.Re1 Bf5+=) 29...h6 (29...Ke7 30.Re3=) 30.Ke2 (30.Rb3 R8a7=) 30...Re8 (30...Bf5 31.Re3=) 31.Be4 (31.Re3 Bf5 32.Be4 Be4=) 31...de4= 32.Nd2 (32.Ne5 Rd8 33.Rd1 f6+=) 32...Rd8 33.Ke3 (33.Ne4 Rd4 34.Nd6 Rb4+=) 33...f5 34.f4 (34.Nb3 Ra6=) 34...Kf7 (34...g5 35.fg5 hg5 36.g4 f4 37.Ke4=) 35.Rb1 Rd7 36.Rb6 (36.g4 g6= (worse is 36...fg4 37.hg4 Re7 38.Ne4+/–)) 36...Kf6 37.g3 g5 38.Rb4 (38.Nb3 Bb3 39.Rbb3 gf4 40.gf4 Rg7+=) 38...Rg7 (38...Bd5 39.Rb6+=) 39.Rb6 (39.fg5 hg5 (worse is 39...Rg5 40.Kf4+=) 40.Ra1 Rh7+=) 39...gf4 40.Kf4 h5 (40...Bd5 41.Nb3 Bb3 42.Rbb3=) 41.Nf1 (41.Nb3 Ra6+=) 41...Rd7 42.Rb4 Ra8 43.Ne3 Rad8 (43...Ra5 44.Nf1=) 44.a5= Ra8 45.Nd1 (45.Rb6 Ra6=) 45...h4 46.Rba4 (46.gh4 Rh8 47.Nf2 Rh4 48.Ke3 Bd5–/+) 46...Rg8 (46...Rad8!?–/+) 47.gh4+= Rh8 48.Nf2 Rh4 49.Kg3 (49.Ke3 Bd5+=) 49...Rhh7 (49...f4!? 50.Kg2 Bd5 51.Ng4 Kf5–+) 50.Kh2 (50.a6 ba6 51.Ra6 Bd5+=) 50...Rdg7 (50...Bd5 51.Re3–/+) 51.Rg3 (51.Re3 Bd5–/+) 51...Rg3 (51...Bd5 52.Rg7 Rg7 53.a6 ba6 54.Ra6–+) 52.Kg3 Kg5 (52...e3 53.Nd3–/+) 53.Kh2 (better is 53.h4!? Kh5 54.a6 ba6 55.Ra6–/+) 53...e3–+ 54.Nd3 f4 55.Nf4 Kf4 56.d5 Kf3 (56...Ke5 57.de6 e2 58.Ra1 Ke6 59.Re1=) 57.de6+= e2 (57...e2 58.Ra3 Kf2=). Zylla,Johannes – Lebenstedt, BS–MK Kreisliga, 1994.

6.Nf3 e5 7.g3 (7.e4 Bb4+=) 7...e4 8.Nd4 Qe5 (8...Bc5 9.e3–/+) 9.Nc2 Na6 10.Bg2 (10.Na4 Nc5 11.Nc5 Bc5+=) 10...Bc5 (10...Nc5 11.Qb2+=) 11.0–0 0–0 12.d4 ed3 (worse is 12...Bd4 13.Bf4 (13.Nd4?! Qd4 14.Be3 Qe5=) 13...Qc5 14.Nd4 Qd4 15.Rad1+/–) 13.ed3 Ng4 14.Ne4 (14.Bf4 Qh5 15.h3 Bf2 16.Rf2 Nf2 17.Kf2–/+) 14...d5= 15.cd5 (worse is 15.Nc5 Nc5 16.Qb6 Nd3 17.cd5 cd5–/+) 15...cd5 (15...Qd5? 16.Nf6 Nf6 17.Bd5 Nd5 18.Re1+–) 16.Nc5 Nc5 17.Qd5 Qd5 18.Bd5 Nd3 19.f3 (19.Ne3 Rd8 20.Bg2 h5=) 19...Nf6 20.Bb3 Be6 21.Bg5 Rac8 (21...Nd7 22.Rfd1 Bb3 23.ab3 Ra1 24.Ra1=) 22.Nd4+= Bb3 23.ab3 Nd5 (23...Rfd8 24.Nf5 Rc3 25.Bf6 gf6 26.b4+=) 24.Rfd1 N3b4 25.Nf5 (25.Ra7 Rc7+=) 25...f6 (25...Rc7 26.h3+=) 26.Bd2 Rc5 (26...Rcd8 27.Bb4 Nb4 28.Nd6+=) 27.Ra7+/– Rb8 28.g4 (28.Re1!?+/–) 28...Nc6= 29.Ra2 (29.Ra3 Rd8 30.Rda1 Rc2+=) 29...Ne5 (29...g6 30.Nd6=) 30.Kf2 (30.Kg2 g6 31.Nd4 Re8=) 30...g6 (30...Nc3 31.Bc3 Rc3=) 31.Nd6 (31.Nd4 Nc3 32.Bc3 Rc3=) 31...Rc6 (31...Nc3!? 32.Bc3 Rc3–/+) 32.Ne4= Re8 (32...f5 33.gf5 gf5 34.Rg1 Kh8 35.Ng3 Nd3 36.Kf1=) 33.Ra7 (33.Be1 Nc7+=) 33...Ng4= 34.fg4 Re4 35.Rb7 Rc2 36.Rd7 (36.Kf3 Rd4 37.Ra1 Rc8+=) 36...Rd4= 37.Ke1 Re4 38.Kf1 Rd4 39.Ra1?? (better is 39.Ke1=) 39...Ne3!–+ 40.Be3 Rd7 41.b4 Rh2 42.Rb1 (42.b5 Kf7–+) 42...Rd3 43.Bg1 (43.Bf2 Rd2 44.Bg1 Rb2 45.Rb2 Rb2–+) 43...Rf3 44.Ke1 Rh1 (44...Rg2 45.Bb6–+) 45.Ke2 Rg3 46.Kf2 Rgg1 (46...Rgg1 47.Rg1 Rg1 48.Kg1 Kf7–+; 46...Rg4 47.b5–+) 0–1. Rusanov,Michail (2425) – Aleksandrov,Danila (2230), St Petersburg–ch sf, 2001.

6.Nf3 g6 7.Bb2 Bg7 8.e3 0–0 9.Be2 d6 10.d4 Ne4 11.0–0+= Nc3 12.Bc3 Qa3 13.Bb2 Qb3 14.ab3 Ra1 15.Ra1 c5 16.Ra2 Nc6 17.dc5 Nb4 18.Ra4 Bb2= 19.Rb4 dc5 20.Rb5+= Ba3 21.Ne1 Bf5 22.Rb7+/– Rd8 23.Kf1 Kf8 24.f3 Bb1 25.e4 f5 26.Ra7 Bb4 27.Ra1 (27...Be1 28.Ke1+/– (< 28.Rb1 Bc3+=)) 1–0. Fredek (2065) – CenkovicTomas (1975), Freundschaftspartie, 5m + 0s, 2006.

4.b5 a4

5.Qb2 cb5 6.cb5 (6.Qb5 Qb5 7.cb5 d5=) 6...d6 (6...d5 7.Qc2 Nd7 8.Nc3=) 7.e3 (7.Nc3 Nd7=) 7...Nf6 8.Nc3 (8.Qc2 Nbd7=) 8...Nbd7 (8...Bf5 9.Nf3=) 9.d4 e5 10.Nf3 e4 11.Nd2 d5 12.Be2 Bd6 13.0–0 0–0 14.Re1 (14.f3!? ef3 15.Nf3=) 14...Qc7–/+ 15.Rb1 ½–½. Melich,Jindrich (2090) – Gedajlovic,Max (1980), Eretria GRE,1st Open, 2014.

5.Qb2 Nf6 6.e3 cb5 7.Qb5 Qb5 8.cb5 d5 9.Ba3 Nbd7 10.Nc3 e5 11.Bf8 Nf8 12.Nf3 Ng6 13.h4 (13.d4 e4 14.Ne5 Be6=) 13...Bg4 14.Be2 0–0 (14...e4 15.Nd4 Be2 16.Ke2=) 15.Ng5 (15.d4 e4 16.Ne5 Be2 17.Ng6 hg6 18.Ke2 Rfc8+=) 15...Be2+= 16.Ke2 d4 (16...h5 17.Rac1+=) 17.Nce4 Ne4 18.Ne4 f5 19.Nd6 d3 20.Kf1 (20.Ke1 Rf6 21.Nb7 Rc8–/+) 20...e4 21.f4 (better is 21.Nb7 Ne5 22.Ke1+=) 21...Rfd8?? (better is 21...Rf6 22.Nc4 Rc8–/+) 22.Nf5+= (worse is 22.Nb7 Rd5 23.Rc1 Rb5–+) 22...Rac8 (22...Rd5 23.g4 h5 24.Ng3 hg4 25.h5+=) 23.h5+/– Rd5 24.g4 Rf5 25.gf5 (25.hg6?! Rb5 26.gh7 Kh8=) 25...Ne7 26.Kf2 Nf5? (better is 26...Rc2 27.Rhd1 Nf5+/–) 27.Rac1+– Rc1 (27...Rf8 28.Rc4 Nd6 29.Rd4+–) 28.Rc1 Nd6 29.Rc7 Nb5 30.Rb7 Nd6 31.Ra7 a3 32.Ra3 Nc4 33.Ra8 Kf7 34.Ke1 Ke6 (34...Nd6 35.a4 Ke7 36.a5+–) 35.Ra7 (35.Re8 Kf5+–) 35...Kf5 (35...Kf6+–) 36.Rg7 1–0. katchum (2475) – pawnraider (2235), net–chess.com, 2012.

5.Qb2 Nf6 6.e3 d6 7.bc6 Qb2 8.Bb2 Nc6 9.Bf6 gf6 10.Nc3 +=.

5.Qb2 Nf6 6.e3 e6 7.a3 d5 8.d3 (8.bc6 Qb2 9.Bb2 bc6 10.Bf6 gf6=) 8...Nbd7 9.Nf3 Nc5 (9...dc4 10.dc4 Bd6 11.Be2+=) 10.Nc3 (10.bc6 Qc6 11.Nbd2 Be7+=) 10...Be7 (10...dc4 11.dc4 Be7 12.bc6 Qc6 13.Ne5=) 11.Bd2 (11.d4 Nce4=) 11...0–0 (11...dc4 12.dc4 0–0 13.Be2=) 12.d4= Nce4 13.c5 Qd8 14.b6 (14.Rb1 Ng4 15.Ne4 de4=) 14...Nc3 (14...Ng4!? 15.Ne4 de4=) 15.Bc3+= Ne4 16.Bb4 Bf6 (16...f6 17.Bd3+=) 17.Bd3+/– h6 18.0–0 g5 (18...Be7 19.Qc2+/–) 19.Qc2 g4 20.Nd2 (20.Ne5 Be5 21.de5 f5+–) 20...Ng5 21.Qd1 (21.Bc3!?+/–) 21...e5+= 22.Bc3 e4 (22...ed4!? 23.Bd4 Bd4 24.ed4 Qf6=) 23.Be2+/– h5 24.Ra2 Kg7 25.Kh1 (25.Rb2 Ne6+/–) 25...Be7 (25...Ne6 26.Rb2+/–) 26.f4 (26.Rb2 f5+/–) 26...gf3 27.gf3 Rh8 (27...ef3 28.Bf3 Nf3 29.Nf3+=) 28.f4 (28.fe4 Kf8+–) 28...Nf3? (better is 28...Nh3+=) 29.Nf3+– ef3 30.Bf3 Qd7 (30...Bf5 31.Rg1 Kf8 32.Rag2+–) 31.Rg1 (31.e4 Kh6+–) 31...Kf8 32.Be1 (32.e4 de4 33.Be4 Qh3+–) 32...Qh3 33.Rg3?? (33.Rag2 Ke8+–) 33...Qe6?? (33...Qf1 34.Rg1 Qh3+–) 34.Qd3 Bh4 (34...Qf6 35.Rag2+–) 35.Rg1 Qh3? (better is 35...Be1 36.Re1 Qh3+–) 36.Bg2 Qe6 (36...Qg4 37.Bd5! Qd7+–) 37.Bh4 Qg4 (37...Rg8 38.Re2+–) 38.Bf6 (38.Bg5 Qe6+–) 38...Rg8 39.Qe2 (39.Bg5!? Bf5 40.Qf1 Be6+–) 39...Qg6 40.Be5 Bf5 41.Bd6 Ke8 42.Qe1 (42.Raa1 Kd7+–) 42...Be4 (42...Kd7 43.Rf2+–) 43.Be4 (better is 43.Qg3!? Qg3 44.hg3 Bf5+–) 43...Qe4 44.Rgg2 Rg4 (44...Kd7 45.Qd1 Rae8 46.h3 Rg2 47.Rg2+–) 45.Kg1 1–0. algernon (2265) – pawnraider (2280), net–chess.com, 2010.

5.Qc2 cb5 6.cb5 Qb5?? 7.Qc8# 1–0. Sopermi (2250) – ZAVALA367 (2135), ajedrez21.com, 2001.

5.Qc2 d6 6.e3 (6.Nc3 Qa5+=) 6...Bd7 (6...Nf6 7.Nc3=) 7.Nc3+= Qa5 (7...cb5 8.cb5 Qc7 9.d4+=) 8.Nf3 Nf6 9.a3 (9.Be2 e6+=) 9...e6 10.Be2 (10.Rb1 cb5 11.Nb5 Be7+=) 10...d5 11.d3 (11.bc6!? Bc6 12.cd5 Nd5 13.Bb2+=) 11...cb5+= 12.cb5 Bb5 13.0–0 (13.Bd2 Bc6+=) 13...Bc6 14.d4 (14.Bd2 Be7+=) 14...Nbd7 (14...Be7 15.Bd2+=) 15.Bd2 Qd8 16.Rfb1 (16.Rfc1 Be7+=) 16...Be7 17.h3 (17.Bd3 0–0+=) 17...0–0 18.Ne5 (18.Bd3!?+=) 18...Ne5–/+ 19.de5 Ne8 (19...Nd7!?–/+) 20.Bd3+= g6 (20...h6 21.Nb5+=) 21.Bb5 Now all is on a4 (21.e4 Rc8+=) 21...d4 (21...Qc7 22.Bc6 Qc6 23.Qb2+=) 22.Bc6 (22.Na4 d3 23.Qc4+=) 22...bc6 (22...dc3 23.Bb7 cd2 24.Ba8 Qa8 25.Qd2+=) 23.ed4 (23.Na4!? c5 24.Rc1+=) 23...Qd4= 24.Bh6 (24.Re1 f5 25.ef6 Bf6=) 24...Ng7+= 25.Rb7 Bh4 26.Rc1 (26.Re1 Rab8 27.Rb8 Rb8 28.Bg7 Kg7 29.Na4 Bg3–/+) 26...Qe5–/+ 27.Na4 Bf2 28.Kf2 Decoy to f2 (28.Qf2 Theme: Deflection from a4 28...Ra4) 28...Qd4 Theme: Double Attack 29.Kf1 (29.Be3 Qa4 30.Qa4 Ra4–/+) 29...Qa4 (29...Ra4!? 30.Qc3 Qc3 31.Rc3 Rd8–/+) 30.Qb2+= Threatening mate... how? 30...Qa3?? (better is 30...e5 31.Qe5 Ne6 32.Bf8 Qa6 33.Kg1 Qb7+=) 31.Qg7 (31.Bg7?! Qb2 32.Bb2 Rfb8 33.Rb8 Rb8+/–) 1–0. Rush,Bradley – Vermaas,Fred, IECG, 2004.

5.Qc2 e6 6.e3 Nf6 7.Nc3 Qa5 8.d4 (8.Nf3 d5=) 8...Ne4 9.Bd2 Nd2 10.Kd2 cb5 11.cb5 d5 12.Bd3 Nd7 13.Nf3 (13.Bh7? Rh7 14.Qh7 Nf6–+) 13...f5 (13...Ba3 14.Rab1=) 14.Ke2 Bb4 (14...Nf6 15.a3=) 15.Rhc1+= Ba3 (15...0–0+=) 16.Rg1?? (better is 16.Nd5 0–0 17.Nc7 Bc1 18.Rc1+– (worse is 18.Na8 Ba3 19.Nc7 Nc5+/–)) 16...Nf6+= 17.Ne5 Bd7 18.Nd7 Kd7 19.b6 Rhc8 (worse is 19...Qb6 20.Na4 Qc6 21.Qc6 Kc6 22.Rgb1+=) 20.Qa4 Qa4 21.Na4 Kd6 22.Nc5 Bc5 23.dc5 Rc5 24.Rgc1? (better is 24.Rgb1+=) 24...Rc1–+ 25.Rc1 Ra2 26.Kf3 (26.Ke1 Rb2–+) 26...Nd7 27.Rc2 (27.Kg3 Nb6 28.Rb1 Kc5–+) 27...Rc2 28.Bc2 Nb6 29.g4 Ke5 (29...fg4 30.Kg4 Nd7 31.Kf3–+) 30.h4 fg4 31.Kg4 h6 32.f4 Kf6 33.e4 de4 34.Be4 Nd5 35.Kg3 (35.Bd3 b6–+) 35...b5 36.Bd3 (36.Bc2 Ne3 37.Bd3 b4–+) 36...b4 37.Bc4 Nb6 (37...Ne3 38.Be2–+) 38.Bb3 Nd7 39.h5 (39.Kf3 Nc5 40.Bd1 b3–+) 39...Nc5 40.Bc2 (40.Bd1 b3–+) 40...b3 41.Bb1 (41.Bg6 e5 42.fe5 Ke5–+) 41...Na4 42.Kf3 Nc3 43.Bg6 b2 0–1. Kalanyos,Ferenc – Szaz,Ferenc (2175), HUN–chT3, 1999.

5.Qc2 Nf6 6.Nc3 a3 (6...cb5 7.cb5 Qc7 8.Nf3=) 7.Rb1 (7.Nf3 e6=) 7...e6 8.bc6 Qc6 9.e4 Bc5 10.Nf3 e5 11.Ne5 Bf2 12.Kf2 (12.Ke2 Qc7 13.Nf3 Bc5+/–) 12...Qc5 13.Ke1 Qe5 14.Rb5 (14.Rb3 Qe7+=) 14...d5 (14...Qe7!?+=) 15.Nd5 Nd5 16.Rd5 (16.cd5 0–0+/–) 16...Qe7 17.d3 (17.Rd3 Nc6 18.Qb3 0–0+=) 17...Nc6+= 18.Qc3 0–0 19.Bd2 (19.Be3 Qc7+/–) 19...f5+= 20.e5 (20.Bf4 Re8 21.Bd6 Qd8+=) 20...Be6 21.Rb5 f4 22.g3 (22.d4 f3 23.gf3 Qh4 24.Kd1 Rf3 25.Qf3=) 22...fg3=+ 23.hg3 Qf7 24.Bf4 g5 25.d4 (25.Bg5 Qf2) 25...gf4 26.Bd3 h5 (26...Nd4 27.Qd4 Rad8 28.Rd5 Bd5 29.cd5 Rd5 30.Qe4 Re5 31.Qe5–+) 27.Be4–/+ Rad8 28.d5 fg3 29.Qg3 Bg4 30.d6 Qf4 31.Bd5 Kh8 32.e6?? (better is 32.Qf4 Rf4 33.e6 Rd6 34.Rb7–+) 32...Qc1# 0–1. Kulbacki,Jim – Schmickt,Bernhard, corr or02–024, 2002.

5.Qd3 cb5= 6.cb5 d6 (6...d5 7.Ba3 Nf6 8.Nc3=) 7.Nf3 Nd7 8.e3 Nc5 (8...Ngf6 9.Nc3=) 9.Qc2 Bd7 (9...Nf6 10.Nc3+=) 10.d4+= Ne6 11.Na3 (11.Nc3+=) 11...Rc8 (11...Nf6!?+=) 12.Qa4+/– Nf6 (12...d5 13.Bd3+/–) 13.Bd3 (13.Nc4 A) 13...Qb5 14.Nd6 ed6 15.Bb5+– (15.Qb5?! Bb5 16.Bb5 Ke7+–); B) 13...Qd8+/–) 13...g6 (13...d5 14.Ne5+/–) 14.Bd2 (14.Nc4 A) 14...Qb5?? 15.Nd6 ed6 16.Bb5+– (16.Qb5?! Bb5 17.Bb5 Ke7+/–); B) 14...Qd8+–) 14...Bg7 (14...d5 15.Ne5+/–) 15.0–0 (15.Nc4!? Qd8 16.0–0+/–) 15...0–0+/– 16.Rab1 (16.Rac1 Ra8 17.Qb3 Rfc8+/–) 16...Ra8+= 17.Qb3 Ra7? (better is 17...Qa7 18.Bb4 Rfc8+=) 18.Nc4+– Qd8 19.a4 b6 20.Rfc1 Qa8?? (better is 20...Ra8+–) 21.Nb6 Qb7 (21...Qb8 22.Nd7 Nd7 23.a5+–) 22.Nd7 Nd7 23.a5 Rb8 (23...Raa8 24.a6 Qb6 25.Rc6+–) 24.a6 (better is 24.b6 Raa8+–) 24...Qb6 (24...Qa8+–) 25.Rc6 Qd8 26.b6 Raa8 (26...Qe8 27.ba7 Rb3 28.Rb3+–) 27.a7 (27.b7!? Ra7 28.Qc4 d5+–) 27...Ra7 (27...Rb6 28.Rb6 Qb6 29.Qb6 Nb6 30.Rb6 Ra7 31.Rb8 Nf8+–) 28.ba7 Rb3 29.Rb3 Qa8 (29...Nef8+–) 30.Rb8! Nb8 31.Rc8 (31.ab8N Qb8 32.Ba6 Nc7–/+) 31...Bf8 32.ab8Q (worse is 32.Rb8 Qa7 33.Rb5 Qa3+=; worse is 32.ab8R Qa1 33.Bf1 d5+–) 32...Qb8 33.Rb8 1–0. algernon (2325) – rbeckett (2100), net–chess.com, 2007.

5.Qd3 d6 6.Nc3 =.

5.Qd3 e6 6.e3 (6.Ba3 Ba3 7.Na3 Nf6=) 6...d5 7.Nf3 (7.Bb2 dc4 8.Qc4 Nf6=) 7...dc4 (7...Nd7 8.Ba3=) 8.Qc4 Bd7 (8...Qb5 9.Qb5 cb5 10.Bb5 Bd7 11.Be2=) 9.Nc3 cb5 (9...Nf6 10.Na4 Qb5 11.Qb5 cb5 12.Nb6+=) 10.Nb5+= Qb5 (10...Nc6 11.Qf4 Rc8 12.Qa4+=) 11.Qb5 Bb5 12.Bb5 Nc6 (12...Kd8 13.Rb1+=) 13.Ne5 Nge7 14.Ba3 f6 15.Be7 fe5 16.Bf8 Rf8 17.Rc1 Kd7 18.Ke2 (18.d3 Ra5 19.Rb1 Rc8+=) 18...Ra5 (18...Rf5 19.Bd3 Rh5 20.Rb1+/–) 19.Bc6 (19.Rb1 e4+/–) 19...bc6+= 20.Rc4 Rb8 21.Rhc1 Exerts pressure on the isolated pawn 21...Ra6 (21...Rb2 22.Rc6 Ra2 23.Rc7 Kd8 24.e4+/–) 22.Kd3 (22.a3 h5+=) 22...Kd6 (22...a3 23.Ke4+=) 23.Kc2 (23.a3 Rb2+=) 23...a3= 24.Rb1 (24.Kd3 Rb2 25.R1c2 Rab6+=) 24...Rab6 (24...Rb1 25.Kb1 e4 26.Rb4=) 25.Rb3 (25.Rb6 Rb6 26.Kc1 Rb2+=) 25...Rb3+= 26.ab3 a2 (26...Rb5 27.Ra4 e4 28.Ra3+=) 27.Ra4+= Rf8 28.f3 (worse is 28.Ra2 Rf2 29.g3 Rh2–/+) 28...e4 29.f4 (29.fe4 Rf2 30.Ra2 Rg2+=) 29...e5 30.g3 ef4 31.gf4 Rf5 32.Ra2 Rh5 (32...g5 33.fg5 Rg5 34.Ra4+/–) 33.Ra4+/– Rh2 34.Re4 (34.Rd4 Ke6+/–) 34...g6 (34...Rf2 35.Kc3+/–) 35.Kd3 (35.Kc3 Rh3+/–) 35...c5 (35...h6 36.Rd4 Kc7 37.Ra4+/–) 36.b4 cb4 37.Rb4 Rg2 38.Rd4 (38.e4 g5 39.e5 Kd5 40.Rd4 Kc5+–) 38...Ke6 39.Ke4 (39.Re4 Kf6+/–) 39...h5 40.Kf3 Rg1 (40...Rh2 41.Rd8+/–) 41.Re4 Kf6 42.Re5 (42.Rb4 h4 43.d4 Rg3 44.Ke4 h3 45.Rb6 Ke7 46.Rb7 Kd6+–) 42...h4 43.Kf2 Rg4 44.Ra5 (44.Re8 Kf7 45.Rb8 g5+/–) 44...h3 45.Ra6 Kg7 (45...Kf7 46.d4+/–) 46.Ra7 Kg8 47.Ra8 (47.d4 g5 48.fg5 Rg5+/–) 47...Kg7 48.d4 Rg2 (48...g5 49.Ra7 Kg6 50.Kf3–/+) 49.Kf3 Rd2 (49...g5 50.fg5 Rg5 51.Ra2+–) 50.Ra1 h2 51.Rh1 Kf6 52.e4 Rd3 (52...Ke6 53.d5 Kd6 54.Kg3+–) 53.Kg4 Rd2 54.d5 Re2 (54...Ke7 55.Kg3 Rd4 56.Kf3 Rd3 57.Kf2 Rd2 58.Ke3+–) 55.e5 Ke7 56.Kh3 Re4 (56...Re3 57.Kh2 g5 58.Kg2 gf4 59.Rh7 Ke8 60.Rh8 Kd7 61.e6 Kd6 62.Rd8 Ke7 63.Rd7 Ke8 64.Kf2+–) 57.Kg3 (57.Rh2!? Rf4 58.Rb2 Rf5+–) 57...g5 58.Rh2?? (58.Kh2 gf4 59.Kg2 Re5 60.Kf3=) ½–½. Zapf – Hess, corr FD89/04/191, 1988.

5.Qc3 Nf6

6.Ba3 d6 7.f3 (7.Qd3 cb5 8.cb5 e5+=) 7...e5 8.e3 Be6 9.Ne2 (9.d4 ed4 10.Qd4 Qd4 11.ed4 cb5 12.cb5 Nd5+=) 9...Be7 10.Qd3 c5 11.g4 (11.Bb2 Nc6+=) 11...h6 (11...h6 12.Nbc3 0–0+=; 11...d5 12.cd5 Bd5 13.Bg2–/+) 0–1. Rettenbacher,W – Koerner, corr SOK–87–08, 1988.

6.Ba3 Ne4 7.Qf3 Qd4 8.c5 –+.

6.d3 d5 =.

6.e3 d6 7.d4 =.

6.e3 e6 7.d4 Ne4 (7...d6 8.Nf3=) 8.Qc2 Bb4 9.Bd2 Nd2 10.Nd2 cb5 (10...d6 11.Bd3=) 11.cb5+= 0–0 12.Ngf3 (12.Bd3 f5=) 12...d5 13.Bd3 g6 (13...h6 14.Rc1=) 14.0–0 (14.a3 Bd6=) 14...Bd7 15.Rab1 Rc8 16.Qd1 Bd6 17.h4 (17.Qe2 Rc3=) 17...Rc3 18.Be2 (18.Qe2 f6=) 18...Ra5 b5 seems the pivot of the position (18...Qa5 19.Ne5+=) 19.h5 (19.e4 f6=) 19...Qc7 (19...gh5 20.Ne5+=) 20.hg6 (20.e4 Rc2 21.Rc1 Rc1 22.Qc1 Qb6=) 20...hg6 21.e4 Ba3 (21...Rc2 22.e5 Ba3 23.Ra1+=) 22.Ne5 Be8 (22...Bd6 23.b6 Qc8 24.Re1=) 23.ed5+= ed5 24.f4 (24.Re1 Nd7+=) 24...Rc2 25.Bd3 White prepares the advance f5 (better is 25.Nc6! Ra2 26.Na5 Qa5 27.Nf3+=) 25...Ra2–/+ 26.f5 (26.Ndf3 Qc3–/+) 26...Bb2 (26...Qb6 27.Ndf3–/+) 27.Qg4 Bd4?? (27...Nd7 28.fg6 f5 29.Rf5 Ra1+/–) 28.Qd4+/– Rd2 29.fg6 fg6 30.Qd5 Kg7 31.Qd4 Kg8 32.Bc4 Kh7 (32...Kg7 33.Nd3 Kh6 34.Rf8 Rg2 35.Kg2 Bc6 36.Kf1 Rb5 37.Rh8 Qh7 38.Qf4 Rg5 39.Qf8 Kh5 40.Rh7 Kg4 41.Qf4) 33.Qd2 (better is 33.Qh4 Kg7 34.Qf6 Kh7+–) 33...Qc5 (33...Qe5 34.Qa5 Qd4 35.Rf2 Qc4+–) 34.Rf2 (34.Rf2 Qe5 35.Re1 Rb5 36.Bb5+–) 1–0. Koerner – Diener,Rudolf, corr SOK–87–08, 1987.

6.e3 g6 7.c5 Qa5 8.b6 (8.Qa5 Ra5 9.Bb2 Bg7+= (9...cb5 10.Bc3 b4 11.Bb4 Ra8 12.Nc3 Nc6 13.Rb1+=) 10.Be5 d6 11.cd6 ed6 12.Bd6 Ne4 13.Bc7+=; 8.d4 d6 9.Qa5 Ra5 10.Ba3 Nbd7 11.cd6 ed6 12.Nd2 Be7 13.Rc1+=; 8.Bb2 Qc3 9.Bc3 Bg7 10.Na3 0–0 11.Nc4 Ne4 12.Bg7 Kg7 13.bc6=; 8.bc6 Nc6 9.Nf3 Bg7 10.Bb2 d6 11.cd6 ed6 12.Qa5 Ra5 13.Na3=) 8...Bg7 (8...d6 9.cd6 (9.Qa5 Ra5 10.d4 Nbd7 11.Bd2 Ra8 12.cd6 ed6 13.Nc3+=) 9...Nbd7 10.Qa5 (10.de7 Be7 11.Qa5 Ra5 12.d4= Nb6 13.Bd2=) 10...Ra5 11.Bb2 ed6 12.Na3 d5 13.Rb1=) 9.Bb2 (9.Ba3 Qc3 10.Nc3 Ne4= 11.Nge2 d5 12.cd6 Nd6 13.Ng3=) 9...Nh5 (9...Qc3 10.Bc3 (worse is 10.dc3 Ne4–/+ 11.Ba3 Na6 12.Ba6 Ra6 13.f3+=) 10...d6 11.cd6 ed6 12.Na3= 0–0 13.Nf3=) 10.Qa5 (10.d4 Qc3 11.Nc3 Nf6 12.Nf3 0–0 13.Ba3+=) 10...Ra5 11.Bg7 Ng7 12.d4 e5 (12...d6 13.cd6+=) 13.Nf3 (13.Nd2+/–) 13...ed4 14.ed4 a3 (14...d6 15.Nbd2 dc5 16.Nc4+=) 15.Nc3 Nf5 (15...d6 16.cd6 Be6 17.Bd3+/–) 16.g4 Ne7 17.Ne5 0–0 18.Nc4 Ra8 19.Nd6 Na6 20.Bc4 Nb4 21.Kd2 Nbd5 22.Rhe1 Nc3 23.Kc3 Nd5 24.Bd5 cd5 25.Re5 f5 26.gf5 gf5 (26...Kg7+–) 27.Rg1 Kh8 28.Rg5 (28.Nf7! Rf7 29.Re8 Rf8 30.Rf8) 28...h6+– 29.Rgf5 Rf5 30.Rf5 Kg7 31.Rd5 Kf6 1–0. Kamaletdinov,Farit (1905) – Kazakov,Vasiliy (1620), 8th Astrakhan Open A, 2013.

6.e3 g6 7.c5 Qa7 8.Nf3 (8.b6 Qa5 9.Qa5 Ra5 10.d4 d6 11.Nf3 Nbd7 12.Bd2 Ra8 13.cd6+=; 8.Ba3 b6 9.d4 Bb7 10.bc6 Bc6 11.Nd2 bc5 12.Bc5 Qc7 13.Ba3+=; 8.d4 b6 9.Ba3 Bb7 10.bc6 Bc6 11.Nd2 bc5 12.Bc5 Qc7 13.Ba3+=) 8...b6 9.Ba3 Bg7 10.d4 0–0 11.Nbd2 Nd5 12.Qc2 bc5 13.Bc5 +=.

6.e3 g6 7.c5 Qc7 8.Nf3 (8.d4 d6 9.Nf3 dc5 10.Qc5 Bf5 11.Nc3 Nbd7 12.Qc4 Nb6 13.Qe2=; 8.b6 Qd8 9.Bb2 d6 10.cd6 Nbd7 11.de7 Be7 12.Nf3 Nb6 13.Be2=; 8.Ba3 Bg7 9.d4 d5 10.Nf3 0–0 11.b6 Qd7 12.Bd3 Ne4 13.Qc2=) 8...b6 9.d4 Bg7 10.cb6 Qb6 11.Nbd2 Nd5 12.Qc2 Qc7 13.bc6 +=.

6.e3 g6 7.c5 Qd8 8.Bb2 (8.d4 d6 9.Nf3 dc5 10.Qc5 Bf5 11.Nc3 Nbd7 12.Qc4 Nb6 13.Qe2=; 8.Nf3 d6 9.d4 dc5 10.Qc5 Bf5 11.Qc4 Bg7 12.Nc3 Ne4 13.Ne4=; 8.Be2 cb5 9.Nf3 Ra5 10.Na3 b4 11.Qb4 Nc6 12.Qb2 Rc5 13.d4=) 8...Bg7 9.d4 d5 10.Qb4 0–0 11.Nc3 cb5 12.Bb5 Nc6 13.Qa3 =.

4.b5 cb5

5.cb5 d6 6.Nc3 Be6 7.Qd1 g6 8.Nf3 Bg7 9.d4 Nf6 10.e4 0–0 11.Be3 Bg4 12.Rc1 Nbd7 13.Bd3 Rfc8 14.0–0 e6 15.h3+/– Bf3 16.Qf3 Ne8 17.Rc2 Qa7 18.d5 b6 19.Rfc1 Ne5 20.Qe2 a4 21.f4 Nd3+= 22.Qd3 Qa5 23.de6 fe6 24.f5 ef5 25.ef5 gf5 26.Qf5 Kh8 27.Nd5 Rc2+= 28.Rc2 Qb5 29.Rf2 Ra7 30.Bd4!+/– h6 31.Qe4 (31...Bd4 32.Qd4 Kg8 33.Nb6+/–) 1–0. Solare,Juan – Luehrig,Walter, Orang–Utan Invitational, 2001.

5.cb5 d6 6.e4 Nf6 7.Bc4 (7.Nc3 Nbd7=) 7...e6 (7...Qd4 8.Bf7 Kd8 9.Bb2 Qe4 10.Kf1=) 8.Nc3 a4 9.Qc2 (9.Na4 Ra4 10.Qa4 Qd4+=) 9...Nbd7 10.Nf3 (10.Na4? Ra4 11.Qa4 Qd4–+) 10...Qc7 11.Bd3 Be7 12.Ba3 b6 13.0–0 (worse is 13.Na4 Qa7 14.Nb6 Qb6–+) 13...Bb7 14.Rac1 Nc5 15.Rfe1 0–0 16.Na4 Rfc8 17.Bc5 bc5 18.e5 de5 19.Ne5 Bd6 20.b6 Qb8 21.f4 Be7 22.Bb5 c4 23.Qb2 (23.Nc4 Qf4 24.Qb3 Ra4–+) 23...Bd5 24.d3 cd3 25.Rc8 Qc8 26.Rc1 Qf8 27.Qd4 (worse is 27.Nd3 Ba3 28.Qd4 Bc1 29.Nc1 Ne4–+) 27...Rc8 28.Nd3 Rc1 29.Nc1 Qa8 30.Qb2 (30.Bf1 Bc6 31.Nc5 Nd5+=) 30...Qa5+= 31.Nd3 Bd6 32.Nc3 Ba3 33.Qc2 Bb7 34.Kh1 Qb6 35.Qf2 (35.Qa4 Bd6–/+) 35...Qa5 (35...Qf2 36.Nf2 Nd5 37.Nd5 Bd5 38.Be2–/+) 36.Qd4 Nd5 37.Nb1 Bd6 38.a4 Bb8 39.Ne5 Qe1 (39...Nf4 40.Qf4 Qe1 41.Qf1 Qe5 42.Qg1–+) 40.Qg1 Qe4 41.Nd7 (41.Nc6!?–/+) 41...Qf4 (41...Bf4 42.Nc5 Qe5 43.Nb7 Bh2 44.Qc1=) 42.Nb8 Ne3 (42...Qb8?! 43.Nd2–+) 43.Nc6 (43.Bc6 Ng4 (43...Qb8?! 44.Bb7 Qb7 45.Nd2–/+) 44.Bf3 Bf3–+) 43...Ng4 44.g3 Qe4 45.Qg2 Qb1 46.Qg1 Qc2 47.h3 Bc6 48.Bc6 Qc6 49.Qg2 Nf2 50.Kh2 Qg2 (better is 50...Ne4 51.Qb2 Qd6 52.Qg2–+) 51.Kg2 Nd3 (51...Nd3 52.a5 Nc5–+) 0–1. mafergut – Curlywurly, ChessWorld.net, 2003.

5.cb5 e6 6.Ba3 d6 =.

5.cb5 e6 6.a4 Nf6 7.Nf3 d5 8.e3 Nbd7 9.Bb2 Nc5 10.Qd1 Be7 11.Be2 0–0 12.0–0 Bd7 13.d3 Rac8 14.Ne5 Rfd8 15.Nd2 Be8 16.Ra2 Nfd7 17.Ndf3 Ne5 18.Ne5 Bd6 19.Nf3 Nd7 20.Bd4 Bc5 21.Ba1 f6 22.Qb3 Bf7 23.d4 Bb4 24.Rc2 Rc7 25.Rfc1 Rdc8 26.Bb2 Qd6 27.Rc7 Rc7 28.Qd1 Nb6 29.Qb3 Qd8 30.Bd3 Qc8 31.Rc2 Rc2 32.Qc2 Qc2 33.Bc2 Nc4 34.Bc1 e5 35.Kf1 b6 36.Ne1 Bc3 37.Nf3 Bh5 38.de5 Bf3 39.gf3 fe5 40.Bf5 Kf7 41.Ke2 g6 42.Bd7 Ke7 43.Bc6 Ke6 44.Kd3 Be1 45.e4 de4 46.Kc4 Bf2 47.Be4 Bd4 48.Kd3 Bg1 49.h3 Bc5 50.Be3 Kd6 51.Bc5 Kc5 52.Kc3 Kd6 53.Kc4 Ke6 54.Kd3 Kd6 55.Ke3 Ke6 56.h4 Kf6 57.Bc2 h6 58.Ke4 Ke6 59.Bb3 Kd6 60.Bd5 h5 61.Bf7 g5 62.hg5 h4 63.Ke3 h3 64.Kf2 1–0. algernon (2330) – pawnraider (2315), net–chess.com, 2014.

5.cb5 e6 6.Bb2 =.

5.cb5 e6 6.Nc3 Nf6 7.Bb2 (better is 7.Nf3=) 7...Be7 (7...d5 8.e3=) 8.Nf3 (8.Na4 Qd6+/–) 8...0–0 (8...d5 9.e3=) 9.e3 (9.Na4 Qd8 10.Rc1 Nd5+/–) 9...d5= 10.Bd3 (10.Be2 Nbd7=) 10...Nbd7 11.Na4 (11.0–0 Qd6=) 11...Qd8 12.Rc1 Nb6 (12...Bd6!?=) 13.Nb6+= White launches an attack 13...Qb6 14.Bd4 Qd8 15.a4 b6 (15...Bd6 16.Qb1+=) 16.Ne5+/– Bb7 (16...Nd7 17.Nc6 Qe8 18.Qc3+/–) 17.Nc6 Bc6 18.bc6 The passed pawn on c6 quickly leads to threats 18...Bb4 (18...Bc5!?+=) 19.c7+/– Qd6 20.Bf6 gf6 21.Qc2 (better is 21.Qd1 Rfc8 22.Qg4 Kf8 23.Bh7 Rc7 24.Rc7 Qc7 25.Qg8 Ke7 26.Qa8 Qc1 27.Ke2 Qh1 28.Qb7 Kd6 29.Qb6 Kd7 30.Qb7 Kd6 31.Qb8 Kd7 32.Bd3+/–) 21...Qc5? (21...Rfc8 22.Bh7 Kg7 23.Bd3+=) 22.Qb2 (better is 22.Bh7!? Kg7 23.Qd1+–) 22...Qe7+/– 23.Qd4 White terminates the opponent with strong threats 23...Bc5 (better is 23...Rfc8!? 24.Qg4 Kf8 25.Bh7 Qd7+=) 24.Qg4 Kh8 25.Qh4 Do you see the mate threat? 25...f5 26.Qe7 Be7 27.Ba6 Bc5 (27...Ra6 28.c8Q Rc8 29.Rc8 Kg7 30.Rc6+/–) 28.Bb7+– Rac8 29.Bc8 Rc8 30.d4 Bd6 31.Ke2 Rc7 32.Rc7 Bc7 33.Rc1 Bd6 34.Rc6 (34.Rc6 Be7 35.Rc7+– (worse is 35.Rb6 Kg7+–)) 1–0. Roczniak,Jan – Bialas,R, Poland (year?).

5.Qb5 Qb5 6.cb5 Nf6 =.

4.b5 d5

5.d3 a4 6.Qb2 d4 7.a3 g6 8.Nf3 Bg7 9.g3 Bg4 10.Bg2 Bf3 11.Bf3 c5 12.0–0 Nd7 13.Nd2 Ne5 14.Bg2 Nf6 15.Nf3 Nf3 16.Bf3 0–0 17.Bg5 Rfe8 18.Qd2 e5 19.e4 Nd7 20.Bg4 Qd6 21.f4 f6 22.fe5 Ne5 23.Bf4 Qe7 24.Bh3 b6 25.Bh6?? (better is 25.Rf2+=) 25...Bh6–+ 26.Qh6 Nd3 27.e5 Ne5 28.Bg2 Qg7 29.Bd5 Kh8 30.Qf4 Rad8 31.Qf6 Qf6 32.Rf6 Kg7?? (32...d3 33.Rd1 Rb8 34.Rd6–/+) 33.Raf1?? (better is 33.Rb6 Re7 34.Ra6=) 33...Rb8–/+ 34.h3 Rf8 35.Re6 Rf1 36.Kf1 Nd3 37.Re7 Kf6 38.Rh7 Ne5 39.Ke2 Re8 40.Kd2 Re7 41.Rh8 Kg5 42.Rb8 Nd7 43.Rb7 Kf6 44.Ra7 Ke5 45.Bc6 (45.Ra4?! Kd6=) 45...Kd6 46.Rb7 (better is 46.Bd7 Rd7 47.Ra4+/–) 46...Rh7?? (better is 46...Ne5 47.Re7 Ke7+=) 47.h4 Nf6 48.Rb6 Ke5 49.Bf3 g5 50.Rc6 gh4 51.gh4 (51.Rc5!? Kd6 52.Rg5 h3+–) 51...Rh4 52.Rc5 Kd6 53.Rf5 Rh2 54.Kd3 Ke6 55.Rg5 Rh3 56.Ke2 d3 57.Kf2 d2 58.Rg6?? (better is 58.Rg1 Ke5 59.Ke2+–) 58...Rf3!–+ 59.Ke2 (59.Kf3 d1Q Combination) 59...Rd3! 60.Kd1 (60.Kd3 d1Q Combination) 60...Ra3 (better is 60...Ke5 61.Rf6 Kf6 62.c5–+) 61.Kd2 Rf3 62.c5 Kd5 (better is 62...Rb3!? 63.c6 Rb5 64.Kc3–+) 63.c6 Ne4 64.Kc2? (better is 64.Ke2 Rc3 65.Rg8–+) 64...Rc3 65.Kb2 a3 (better is 65...Rb3 66.Kc2 Rb5–+) 66.Ka2–/+ Kc5 67.c7? (67.Rg4 Re3 68.c7 Nc3 69.Ka3 Nb5 70.Kb2 Nc7–/+) 67...Kb5?? (better is 67...Kb4 68.Rc6 Rc6 69.bc6 Nd6–+) 68.Rg4 Nd2 69.c8Q Rc8 70.Ka3 Rc5 71.Rg2 Nc4 72.Kb3 Rd5 73.Rg8 Na5 74.Kc3 Nc6 75.Kc2 Kc5 76.Kc3 Rd3 (76...Rd3 77.Kd3 Ne5 78.Ke4 Nf7+/–) 0–1. korwiktor (1745) – koleos73 (1735), kurnik, 2012.

5.cd5 a4 6.Qc4 Qb5 7.Qb5 cb5 +=.

5.cd5 Qb5 6.Qb5 cb5 7.Na3 (7.e4 Bd7+=) 7...Bd7 8.e4 b4 9.Nc4 Na6 (better is 9...Nf6!? 10.Nb6 Ra7+/–) 10.Nb6+/– (10.Na5?! Nc5 11.Nc4 Ne4=) 10...Rd8 11.Nf3 e6 (11...Nc5 12.e5 Na6 13.Bb2+–) 12.Ne5 (12.Nd7 Rd7 13.de6 fe6+–) 12...Nf6 13.Ned7 Nd7 14.Bb5 ed5 15.Nd7 Rd7 16.ed5 Nc7 17.Bd7 Kd7 18.0–0 Nd5 19.Bb2 f6 20.Rfe1 Bd6 21.g3 Rc8 22.Rac1 Rc6 23.Kf1 Nb6 24.Bd4 Na4 25.Ke2 Nc5 26.Red1 Ne6 27.Be3 Nc7 28.Rc6 (28.h3!?+/–) 28...bc6+= 29.Bb6 a4 30.Bc7 Bc7 31.Kd3 Bd6 32.Kc4 b3? (better is 32...f5+=) 33.ab3+– ab3 34.Kb3 Ke6 35.Kc4 Ba3 36.Ra1 Be7 37.Ra6 Kd7 38.Ra7 Ke6 39.f4 f5 40.Ra8 h6 41.d4 Kd6 42.Ra6 Kd7 43.d5 c5 (43...cd5 44.Kd5 Bf6 45.Ra7 Kd8 46.Ke6+–) 44.Ra7 Kd6 45.Re7! Ke7 46.Kc5 g5 47.d6 (47.d6 Kd7 48.Kd5+–) 1–0. Valenta,Vit jr (2160) – Karczynski,L (1890), Tatranske Zruby SVK, Tatry Open, 2011.

5.e3 a4 6.Qc2 e6 (6...Nf6 7.Nc3 dc4 8.Bc4+=) 7.Nc3 dc4 8.Bc4 Bd7 9.Rb1 Nf6 10.Nf3 Be7 (10...Qa5 11.Ne5+=) 11.0–0 (11.Ne5 cb5 12.Nd7 Nbd7 13.Bb5 Qc7+=) 11...0–0 12.Ne5 Qc7 13.Nd7 (13.d4 Bd6+=) 13...Nbd7 14.bc6 bc6 (14...Qc6 15.Bb5 Qc7 16.Ba4+=) 15.Na4 Qa5 16.Nc3 Ne5 17.Be2 Nd5 18.Bb2 Nd7 19.Bc4 N5b6 (19...Ne5 20.Nd5 cd5 21.Bc3+/–) 20.Bd3 h6 21.Ra1 (21.Bh7 Kh8+–) 21...Bf6 (21...Ne5 22.Bh7 Kh8 23.d4+/–) 22.Bh7+– Kh8 23.Be4 Nd5 24.d4 Rab8 25.Ne2 (25.Rfc1 e5 26.Nd5 cd5+/–) 25...Rb6 (25...c5 26.Rfc1+/–) 26.Nf4 (26.Nc1!?+–) 26...Rfb8+= 27.Nd3 c5 28.Bd5 (28.Rfb1 cd4 29.ed4 Ne7+/–) 28...ed5 29.Bc3 (< 29.dc5 Rb2 30.Nb2 Rb2=+) 29...Qa3 30.dc5 Nc5 31.Bf6 Nd3 32.Bd4 Nb4 (32...Rb5 33.Rfd1 Nb4 34.Qc3 Qc3 35.Bc3+/–) 33.Qf5+– R6b7 34.Rfb1 (34.Rfc1 Re7 35.Qf4+–) 34...Qa4? (better is 34...f6+–) 35.a3 Nc2 36.Rb7 Rb7 37.Rc1 (37.Qc8 Kh7 38.Qb7 Na1+–) 37...Rb8 (37...Qc6 38.Be5 f6+–) 38.Bg7! (38.Qc2 Qc2 39.Re1 Rb1–+) 38...Kg7 39.Qe5 (39.Qc2?? Qc2 40.Rf1 Qb3–+) 39...Kg6 40.Qb8 Na3 (40...d4 41.Qd6 Kg7 42.Qe5 Kg6 43.Qe4 f5 44.Qc2 Qc2 45.Rc2 de3 46.fe3+–) 41.Qd6 (41...Kg7 42.Ra1+–) 1–0. Schmidt,Horst – Artz,Frank, Baden–ch MB Mannheim, 1990.

3.Qb3 Na6=+

4.a3 e5

5.Nf3 Bc5 6.e3 +/– (< 6.Ne5 Bf2 7.Kd1 Nh6=+).

5.Nf3 d6 6.Nc3 =.

4.a3 Nf6

5.Nf3 Nc5 6.Qc2 Ne6 7.e3 a5 8.c5 Qa7 9.Bb2 b6 10.d4 bc5 11.bc5 Ba6 12.Nc3 Bf1 13.Kf1 g6 14.Kg1 Bg7 15.h4 Ng4 16.Na4 0–0 17.h5 Rab8 18.hg6 hg6 19.Rb1 f5 20.Nb6 Rf7 21.Bc3 d6 22.Qb3 dc5 23.Qe6+– Rb6 24.Rf1 cd4 25.Ng5 Ne5 26.Nf7 Nf7 27.Bd4 Bd4 28.Qg6 Kf8 29.Rh7 e6 30.ed4 Qe7 31.Re1 c5 32.dc5 Ra6 33.Rb1 Ra8 34.Rb7! Qb7 35.Qg7 Ke8 36.Qg8 Kd7 37.Qf7 Kc6 38.Qb7 Kc5 39.Rc7 (39...Kd4 40.Qa8 Ke5 41.Qd8 a4 42.Rc5 Ke4 43.Rc4 Ke5 44.f4#) 1–0. orane – Victoria, caissa.com, 2007.

5.Nf3 d6 6.d4 =.

5.Nf3 d5

6.e3 Nc5 7.Qc2 Nce4 8.d3 +–.

6.e3 Be6 7.Bb2 =.

6.e3 Bf5

7.Nc3 Nc5 8.Qa2 Nd3 9.Bd3 Bd3 10.cd5 Qc7 11.Bb2 a5 12.dc6 bc6 13.Na4 +=.

7.Nc3 Nc5 8.Qa2 Nce4 9.Bb2 =.

7.Nc3 Nc5 8.Qd1 Nce4 9.cd5 (9.Bb2= Nc3 10.Bc3 e6 11.c5 Qc7 12.Be2 b6 13.Be5+=) 9...Nc3 10.dc3 0–0–0 11.c4 cd5 12.c5 Qc7 13.Bb2 +/–.

7.Nc3 Nc5 8.Qd1 Nd3 9.Bd3 Bd3 10.cd5 Qa6 11.dc6 Qc6 12.Bb2 a5 13.Ne2 =.

7.d4 Nb8 8.cd5 cd5 9.Nc3 =.

7.d4 dc4 8.Bc4 e6 9.Ne5 (9.Nc3 Bd6+=) 9...Bd6= 10.f3 h5 (10...Nc7 11.Be2 Nb5 12.Nc4+=) 11.Nc3 (11.Be2 Be7 12.Bb2+=) 11...Qc7 (11...Rd8 12.Ne2 Nc7 13.e4+/–) 12.f4 (better is 12.e4!? Bh7 13.Bf4+/–) 12...Nb8+= 13.Ne2 (13.0–0 Nbd7+=) 13...h4 (13...b5 14.Bd3=) 14.Bb2 (14.0–0 h3 15.g3 0–0=) 14...Nbd7 (14...b5 15.Bd3=) 15.0–0 Ne4 Black gets strong initiative 16.Rad1 Nb6 17.a4 (17.Bd3 Nd5=) 17...a5 (17...Nc4 18.Nc4 h3 A) worse is 19.Nd6 Qd6 (19...Nd6?! 20.g3=) 20.g3 Qd5 21.Qd5 ed5–/+; B) 19.g3=) 18.b5= Bb4 19.Bc1 (better is 19.bc6!? bc6 20.Bc3=) 19...Nc4–/+ 20.Qc4 Nd6 21.Qb3 (better is 21.b6!? Nc4 22.bc7 Ne5 23.fe5–+) 21...cb5 22.Nd3 Qc4 23.Qc4 bc4 (23...Nc4?! 24.ab5 Bd3 25.Rd3–+) 24.Nb4 ab4 25.d5 (25.Bd2 Bd3 (25...Ra4?! 26.Ra1 b5 27.Bb4–+) 26.Rfe1 Be2 27.Re2 c3–+) 25...Bd3 26.de6 fe6 (26...Be2 27.Rd6 Bf1 28.Kf1 Ra4 29.Ke1–+) 27.Rd3 (27.Rfe1 Ke7–+) 27...cd3 28.Nd4 Kd7 (28...Ke7 29.Rd1–+) 29.Rd1 (29.Nf3 Ke7 30.Ne5 Rhd8 31.Nd3 Ra4–+) 29...Ra4 30.Rd3 (30.Nf3 Rc8 31.Ne5 Ke7–+) 30...Rc8 (30...Ra1 31.Rd1 Rc8 32.Ne2–+) 31.Nb3 (31.Bd2–+) 31...Rc3 (better is 31...Ra1!–+) 32.Rc3= bc3 33.Nc5 Kc6 34.Na4 Ne4 35.Nc3 Nc3 36.Bb2 Nd1 (36...Nd5 37.Bg7 Ne3 38.Kf2 Ng4 39.Kf3 Nh2 40.Ke4=) 37.Bd4+= Kd5 38.Kf1 (worse is 38.Bg7 Ne3 39.Bf6 h3–/+) 38...Kc4 39.Ke1 (worse is 39.Bg7 Kd3+=) 39...Nc3 40.Kd2 (40.Bg7 Ne4=) 40...Ne4 41.Kc2 Nf6 42.g3 hg3 43.hg3 Ne4 44.g4 g6 45.Bb6 Nf6 46.g5 Nd5 47.Bd4? (better is 47.Ba7+=) 47...Nf4–+ (47...Nf4 48.Bf6 Nd3–+) 0–1. Roczniak,Jan – Mglosiek,Wladyslaw, corr Poland, 1985.

7.Nc3 e6

8.Bb2 Nc5!? 9.Qd1 Nd3 10.Bd3 Bd3 11.cd5 ed5= 12.Ne5 Bf5 13.Qf3 +=.

8.Bb2 Be7 9.Na4 (9.cd5 ed5 10.Na4 Qc7 11.Be5 Qd7 12.Ba6 ba6 13.Nc5+/–) 9...Qd8 10.Be5 (10.cd5!? Qd5 (10...cd5 11.Bb5 Kf8 12.Ba6 ba6 13.0–0+/–) 11.Qd5 (11.Bc4+= Qe4 12.Ba6 ba6 13.Nc5+=) 11...cd5 12.Bb5 Kf8 13.Rc1+/–) 10...0–0= (10...dc4 11.Qc4 0–0 12.Rc1 Nd7 13.Be2+=) 11.d4? (better is 11.Qb2!?= dc4 12.Bc4 b5 13.Be2+=; 11.cd5 Nb8 12.Nc5 cd5 13.Nb7=) 11...dc4–/+ 12.Bc4? (better is 12.Qc4 b5 13.Qc6 Nb4 14.ab4 Bb4 15.Kd1 ba4 16.Bf6 Qf6 17.Qa4–+) 12...b5–+ 13.Be2 ba4 14.Qa4 Nb8 15.Nd2 (15.0–0 Nbd7–+) 15...Ne4 (15...Nbd7 16.Bf6 Bf6 17.Qc6–+) 16.Rc1? (16.Ne4 Be4 17.f3–+) 16...Nd2 17.Kd2 Bd6 (better is 17...Nd7!? 18.Bg3 c5 19.Rhd1–+) 18.Bd6 Qd6 19.Bf3 e5 20.b5 e4 21.Bd1 (21.Be2 cb5 22.Qb5 Qg6–+) 21...cb5 22.Qb5 Bd7 23.Qb2 (23.Qc5 Qg6 24.Qh5 Qe6–+) 23...Nc6 24.Ba4 (24.Rc5 Rac8 25.Ke1 Ne7–+) 24...Nd4 (better is 24...Rab8 25.Qc3 Ne5 26.Bd7 Qd7 27.Rc2–+) 25.Qd4 Qd4 26.ed4 Ba4 27.Rhe1 (27.Rc7 Bb3–+) 27...f5 28.Rc4 Bb5 29.Rc5 Bd7 (29...Bd3!? 30.f3–+) 30.Rb1 Be6 31.Rb7 Rf7 32.Rf7 Kf7 (32...Bf7?! 33.Rf5 Rd8 34.Ke3–+) 33.d5 (33.Rc7 Kf6 34.Ke3–+) 33...Rd8 34.Rc7 Rd7 35.Rd7 Bd7 36.Ke3 Ke7 0–1. Schmidt,Alexander – Ommen,Tobias, NRW–chT U18 Germany, 1994.

8.Nd4 dc4 9.Bc4 Bg4 =.

8.Nd4 dc4 9.Bc4 Bg6 10.0–0 Bd6 11.f4 0–0 12.Bb2 Qc7 13.Ba6 +/–.

8.Nd4 Bg6+= 9.cd5 (9.c5 Qc7 10.Ba6 ba6 11.f4 a5 12.0–0 Be7 13.b5+=; 9.Na4 Qc7 10.cd5 Nd5 11.Ba6 ba6 12.Bb2 a5 13.b5+=) 9...Nd5 10.Na4 Qc7 11.Ba6 ba6 12.Bb2 a5 13.b5 +=.

3.Qb3 e6

4.a3 a5 5.b5 cb5 6.cb5 a4 7.Qb2 Bc5 8.e3 Nf6 9.Nf3 0–0 10.d4 Be7 11.Nbd2 d5 12.Ne5 Nbd7 13.f4 Ne5 14.fe5 Ng4 15.Nf3 f6 16.h3 Nh6 17.ef6 Rf6 18.Be2 Nf5 19.0–0 Ng3 20.Rf2 Ne2 21.Qe2 Bd7 22.Rb1 Ra5 23.Ne5 Be8 24.Rf6 gf6 25.Qg4 Kh8 26.Nf3 Bg6 27.Rb2 Bf5 28.Qh5 Bg6 29.Qg4 Ba3 30.Nh4 Bb2 31.Bb2 Rb5 32.Ba3 Rb3 33.Be7 Kg7 34.Qf4 Rb1 35.Kh2 e5 36.de5 f5 37.Nf5 Bf5 38.Qf5 Qg6 39.Bf6 Kg8 40.Qg5 Qg5 41.Bg5 a3 42.Bf6 a2 43.e6 Re1 44.e7 Kf7 45.Bh8 Re3 46.Kg1 Re7 47.Kf2 Kg6 48.Bd4 Kf5 49.Kf3 Re4 50.Bb2 d4 51.g4 1–0. ateistawolnyx – bruziewicz, kurnik, 2014.

4.b5 Nf6 5.Bb2 Be7 6.d4 d6 7.e3 Nbd7 8.a4 a5 9.Nd2 0–0 10.Bd3 Re8 11.Ngf3 Bf8 12.0–0 c5 13.Ne4 Ne4 14.Be4 Qc7 15.d5 e5 16.Qc2 g6 17.Bc3 (better is 17.Bd3+=) 17...f5–/+ 18.Bf5 gf5 19.Qf5 Qd8 20.Qg5 Qg5 21.Ng5 Nf6 22.f3 h6 23.Ne4 Bg7?? (23...Ne4!? 24.fe4 Bg4 25.Rae1–+) 24.Nf6?? (better is 24.Nd6 Re7 25.Nc8 Rc8 26.Ba5+/–) 24...Bf6–/+ 25.e4 Bg5 26.Rad1 b6 27.Bd2 Kg7 28.Bg5 hg5 29.Kf2 Bd7 30.Rh1 Rh8 31.h3 Raf8 32.Kg3 Rf4 33.Rdf1 Kg6 34.Rd1 Kg7 35.Rdf1 Be8 36.Rb1 Bg6 37.Rbe1 Rhf8 38.Rhf1? (38.Kh2 Kf7–/+) 38...Bh5?? (better is 38...Be4 39.Re3 Bg6–+) 39.Rf2 g4 40.hg4 (40.fg4 Rf2 Pinning (40...Rf2 Deflection); 40.hg4 Bg4) 40...Bg4 41.Rff1 (41.fg4 Rf2 Pinning (41...Rf2 Deflection)) 41...Bh5 42.Rh1 Bg6 43.Rh2 Rh8 44.Reh1 Rh2 45.Rh2 Be4 46.fe4 Re4 47.Rh4 Re3 48.Kf2 Ra3 49.Rg4 Kf7 50.Rh4 Ra4 51.Rh7 Kf6 52.Rd7 Rc4 53.Rd6 Kf5 54.Rb6 Rd4 55.Ra6 Rd5 56.Ra5 c4 57.Ra4 Rc5 58.b6 c3 0–1. popovicigelu – 8591gustaw (1675), kurnik, 2012.

4.c5 Qc7

5.d4 a5 6.b5 cb5 7.Qb5 Nc6 8.e3 d6 9.Ba3 Bd7 10.cd6 Bd6 11.Qd3?? (11.Bd6 Qd6 12.Qb7 Rb8=) 11...Bh2 (better is 11...Nb4 12.Qc4 Nc2 13.Kd1 Qc4 (13...Na3?! 14.Qc7 Ba4 15.Ke2 Bc7 16.Na3=) 14.Bc4 Na3 (14...Na1?! 15.Bd6 Rd8 16.Bf4–/+; 14...Ba3?! 15.Kc2 Ba4 16.Kc3=+) 15.Na3 Ba3–+) 12.Nf3+= Bd6 13.Bd6 (13.Rh7 Rh7 14.Bd6 Qd6 15.Qh7 Qf8+=) 13...Qd6= 14.Rh7 Nb4 15.Rh8 Nd3 16.Bd3 Ke7 17.Nbd2 (17.Bh7=) 17...Qa3 (17...Rc8 18.Ne5=+) 18.Ke2 (18.Bh7 Rc8 19.Rg8 (19.Bg8?? Rc1 20.Ke2 Bb5 21.Nc4 Bc4 22.Kd2 Qc3) 19...Rc1 20.Rc1 Qc1 21.Ke2=) 18...Bc6 (18...Rc8 19.Ne5 Qc3 20.Rhh1=) 19.Nc4 (19.Ne5 Bd5= (19...Bg2? 20.Rg1 Bd5 21.Rg7+–)) 19...Qc3 20.Rhh1 (20.Rb1 Bd5 21.Nfe5 Rc8+= (21...Bg2? 22.f3 Rb8 23.Rh7+–)) 20...Be4=+ 21.Nce5 (21.Be4 Qc4 22.Bd3 Qa4=+) 21...Nf6–/+ 22.Rhc1 Qb2 (22...Qa3 23.Rc2=+) 23.Nd2= Bg2 (23...Bd3 24.Nd3 Qb5 25.Rab1 Qh5 26.Nf3+=) 24.Rab1 Qa2 25.Rc7 Ke8 (25...Kd8 26.Rf7 Bc6=) 26.Rf7 (26.Bb5 Kf8 27.Rf7 Kg8+–) 26...Be4?? (26...Ne4 27.Be4 Be4+/–) 27.Rg7 (better is 27.Bb5 Kd8 28.Bc4+/–) 27...Rb8? (27...Bd3 28.Kd3 Ra7+–) 28.Rb6 (28.Bb5 Kd8 29.Rc1 Bf3 30.Nef3 Qd5+–) 28...Bd3 29.Kd3 a4 (better is 29...Qa3 30.Ke2 Qa2+–) 30.Ng6?? (better is 30.Ndc4 Qf2 31.Re6 Kd8 32.Rd6 Ke8 33.Rf6 Qf6 34.Rg8 Ke7 35.Rb8 Qf1 36.Kc2 Qe2 37.Nd2+–) 30...Nd7= 31.Re6?? (better is 31.Rg8 Kf7 32.Rb8 Kg6 33.R8b7 Nb6 34.Rb6=) 31…Qe6–+ (32.Re7 Qe7 33.Ne7 Ke7–+) 0–1. Drefke – Diener,Rudolf, corr SOK–87–14, 1987.

5.d4 Nf6 =.

5.e3 d5 6.Bb2 e5 7.Be2 a5 (7...Nf6 8.Nf3 Nbd7 9.d4=) 8.a3 (8.d4 ab4 9.Qb4 Nd7=) 8...Bf5 (8...Nd7 9.Nf3=) 9.d3 (9.Nf3 Nd7=) 9...ab4 10.ab4 (worse is 10.Qb4 Nd7 11.d4 b6–/+) 10...Ra1 11.Ba1 Nd7 12.Nf3 Be7 (12...b6 13.cb6 Qb6 14.Ne5 Bb4 15.Kd1=) 13.Nbd2 (13.0–0 Ngf6=) 13...Nh6 14.Qb2 Will e5 fall? (14.Qa4 0–0=) 14...f6 15.e4 de4 (15...Be6 16.0–0=) 16.de4 Be6 17.Bc4 Bc4 (17...Bg4 18.h3 Bf3 19.Nf3+=) 18.Nc4+= b6 19.cb6 Nb6 20.Nfd2 (better is 20.Qc3!?=) 20...Nc4+= 21.Nc4 0–0 22.Qb3 Nf7 23.0–0 (23.Bc3 Qd7=) 23...Rb8 24.Bc3 c5 25.b5 Qb7 26.b6 Qe4 27.Ra1 Qd5 28.Qb5 (28.Rd1 Qe6 29.Rb1 Qf5+=) 28...Nd6 29.Nd6 Bd6 30.Qd7 (30.Rb1 e4+=) 30...Qd3 (30...e4 31.Kh1–/+) 31.Be1+= Qd4 32.Ra4 (32.Ra7 Bf8 33.Qc7 Qd1–/+) 32...Qd1–/+ Threatening mate... how? 33.Kf1 (better is 33.Re4!?–/+) 33...Qd3–+ 34.Kg1 Qb1 Threatening mate: Qxe1 35.g3? (35.Kf1 Qb6 (worse is 35...Rb6 36.Ra8 Rb8 37.Qe6 Kf8 38.Qd6 Kf7 39.Rb8+–) 36.Qe6 Kh8–+) 35...Bf8 (35...Qe1 36.Kg2 Bf8 37.Qd5 Kh8 38.Ra8 Ra8 39.Qa8=; 35...Rb6? 36.Ra8 Rb8 37.Qe6 Kf8 38.Qd6 Kf7 39.Qb8 Qe1 40.Kg2 Qe4 41.Kf1+–) 36.Kg2 Rb6 (36...Qe1?! 37.Qd5 Kh8 38.Ra8 Ra8 39.Qa8=; 36...Qb6?! 37.Ra7–+) 37.Qd5 Kh8 38.Ra8 (38.Bd2 Rb8–+) 38...Rb8 39.Ba5 h6 (39...Qb5 40.Bc7 Re8 41.h3–+) 40.Bc7 Ra8 41.Qa8 Kh7 42.Be5 fe5 43.Qf8 c4 44.Qf3 Qc2 45.h4 Qd3 46.h5 (46.Qd3!? cd3 47.Kf3 e4 48.Ke3 Kg6–+) 46...Qf3 47.Kf3 g6 48.hg6 Kg6 (48...Kg6 49.Ke4 Kf6–+) 0–1. Gajda,Leszek – Brzoza,Miroslaw, corr 2AMM Poland, 1994.

5.Nf3 Nf6 6.Bb2 Be7 7.e3 0–0 8.Qc2 h6 9.Be5 d6 10.cd6 Bd6 11.Bd6 Qd6 12.d4 Qb4 13.Nbd2 Nbd7 14.Bd3 Nd5 15.0–0 Qe7 16.a3 e5 17.Rfe1 ed4 18.ed4 Qd6 19.Ne4 Qc7 20.Rac1 Nc5 (20...Nc5 21.Nc5 Qd6+–). Pachurka,Roland – Kleine,Joachim, DESC, 2006.

3.Qb3 Nf6

4.a4 a5 5.b5 d5 6.e3 e5 7.Ba3 Ba3 8.Na3 0–0 9.Rc1 d4 10.c5 Qd8 11.Nc4 Nbd7 12.Nb2 Re8 13.Nf3 Ne4 14.Bc4 Qf6 (14...Qe7 15.Nd3+=) 15.Nd3= Nec5 16.Nc5 Nc5 17.Bf7 Qf7 18.Qf7 Kf7 19.Rc5 de3 (19...cb5 20.Rb5 Kf6 21.0–0=) 20.fe3+/– cb5 (better is 20...e4 21.Nd4 Bd7+/–) 21.ab5 (21.Ne5 Re5 22.Re5 ba4+–) 21...h6 (better is 21...e4 22.Ng5 Kg8=) 22.Ne5+– Kg8 23.d4 a4 24.0–0 a3 25.Ra1 a2 26.Rc2 Be6 27.e4 Bb3 (27...Ra4 28.Rd2=) 28.Rc7 (28.Rb2 Ra3+/–) 28...Rec8 (28...Ra4!? 29.Nf3 Rb4+=) 29.Rb7+/– Rc2 30.Nd3 Rd2 31.Nc5?? (31.Nc1!? Bc4 32.d5+/–) 31...Bc4?? (better is 31...Rd1 32.Kf2 Ra1 33.Nb3 Rb1–+) 32.d5 (better is 32.h4 Rb2 33.Kh2 Bb5 34.Ne6=) 32...Rb2–+ 33.Ra2 (33.g3–+) 33...Raa2 (33...Raa2 34.Rg7 Kg7 35.Ne6 Kg8 36.h3 Rg2 37.Kh1 Rh2 38.Kg1 Rag2; 33...Rba2?! 34.h3–/+; 33...Ba2?! 34.h4–/+) 0–1. blackiwhite (1715) – cstefan1 (1750), kurnik, 2011.

4.Bb2 a5 5.b5 cb5 6.cb5 a4 7.Qc2 Qb5 8.Qc8# 1–0. guest1005 – guest1928, ICC, 2002.

4.Bb2 d6 5.e3 =.

4.Bb2 e6 5.c5 (5.Bf6 gf6 6.c5 Qc7=) 5...Qd8 6.d4 d5 7.Nc3 (7.Nf3 Be7=) 7...Nbd7 (7...b6 8.Nf3=) 8.Nf3 g6 (8...b6 9.e3=) 9.e3+= Bg7 10.Be2 Qc7 11.0–0 0–0 12.b5 e5 13.a4 e4 (13...Re8 14.Rfe1+=) 14.Nd2 Ne8 (14...Nb8 15.a5+=) 15.a5 Qd8 (15...Nef6 16.Qc2+=) 16.a6+/– Kh8 (16...Nc7 17.ab7 Bb7 18.b6 ab6 19.cb6+=) 17.Rfb1 (17.Ra3 Ndf6+/–) 17...ba6 (17...Nc7 18.ab7 Bb7 19.Ra3+/–) 18.bc6 Rb8?? (better is 18...Ndf6+/–) 19.Qd5+– (19.cd7?! Rb3 20.dc8Q Qc8 21.Nb3 Nc7+–) 19...Nc7 20.Qd6 (20.cd7?! Nd5 21.dc8Q Rc8 22.Nde4 Nb4+=; 20.Qe4?! Ne5 21.Qf4 Nc6+–) 20...Ne8 21.Qf4 (21.cd7?! Nd6 22.Nde4 Qd7 23.Nd6 f5+=) 21...Rb2 (21...Ne5 22.Nde4 (22.Qe4?! Bf5 23.Qd5 Qc7+–; 22.Ba6?! Ba6 23.Ra6 Nd3 24.Qe4 Nc5 25.dc5 Qd2+–) 22...Nc6 23.Bc4+– (worse is 23.Ba6 Ba6 24.Ra6 Nb4 25.Ra7 Nd3+–)) 22.Rb2 (22.cd7?! Rb1 23.Rb1 Qd7 24.Nde4 f5+–) 22...Nc5 23.Nde4 (23.Nce4 Ne6 24.Qb8 f5+–) 23...Ne6 24.Qb8 f5 25.Nd2 N8c7 26.Nf3 (26.Bc4 f4 27.Be6 Ne6+–) 26...f4 (26...Qd6 27.Qa7 Qc6 28.Rc1+–) 27.Qa7 (27.Rc1 fe3 28.fe3 g5+–) 27...g5 (27...fe3 28.fe3 Qe8 29.Rc2+– (29.Ba6?! Ba6 30.Qb6 Bc4+/–)) 28.Ne5 (28.Rab1 g4 29.Ne5 fe3 30.fe3 Be5 31.de5 Qg5+–) 28...Be5 (28...fe3 29.fe3 Be5 30.de5+–) 29.de5 g4 (29...Qe8 30.Bf3+–) 30.Bg4 Qg5 31.Bf3 (31.Be6 Ne6 32.Ra5 f3+=) 31...Qe5 32.Rc1 (32.Na4 Ng5 33.Qd4 Nf3 34.gf3 Qd4 35.ed4 Kg7+–) 32...Ng5 (32...Nb5 33.Rb5 ab5+–) 33.Qd4 Qd4 (33...Nf3 34.gf3 Qg7 35.Qg7 Kg7 36.Rb8+–) 34.ed4 Rg8 (34...Nf3 35.gf3 Be6 36.Rb7 Rg8 37.Kh1+–) 35.Be4 (35.Bd1 f3 36.g3 Rd8+–) 35...f3 36.g3 Bh3 (36...Kg7 37.Bd3+–) 37.Rd2 (37.Rb7 Rg7+–) 37...Bg2 (37...Rd8 38.Bc2+–) 38.h4 Nb5 (38...Ne4 39.Ne4 Rd8+–) 39.hg5 Rg5 The mate threat is Rh5 40.c7 (better is 40.Rd3 Rh5 41.Bf3 Bf3 42.Rf3 Na7+–) 40...Nc7 41.Rd3 Rh5 The mate threat is Rh1 42.Bf3 Rh1 43.Kg2 Rc1 44.d5 Ne8 (44...Kg7 45.Ne2 Ra1 46.Nf4+–) 45.d6 Nd6 46.Ne2 (46.Ne2 Rb1 47.Rd6+–) 1–0. Schiefelbusch,Dirk (2130) – Hombrecher,Kai (1915), It (open) Dortmund (Germany), 2005.

4.Nc3 e5 5.Nf3 =.

4.Nc3 e6 5.a3 (5.c5 Qc7=) 5...d5 (5...a5 6.b5=) 6.e3 Be7 (6...dc4 7.Bc4 Bd6 8.d4=) 7.c5 (7.d4 0–0=) 7...Qc7 8.Bb2 (8.d4 Nbd7=) 8...a5 (8...e5 9.Nf3 Nbd7 10.Be2+=) 9.Nf3 ab4 (9...0–0 10.d4=) 10.ab4 Ra1 11.Ba1 0–0 (11...b6 12.Na4 bc5 13.Nc5=) 12.Na4 (12.Nd5!? ed5 13.Be5+=) 12...Nbd7= 13.Be2 (13.d4 b5 14.cb6 Nb6=) 13...b6 (13...e5 14.0–0=) 14.cb6 Nb6 15.Be5 Qa7 16.Nc5 Nbd7 17.Nd7 Bd7 (17...Nd7 18.Bc3=) 18.0–0 Ra8 19.Ra1 Qb7 20.Rb1 Ne8 21.Ne1 (21.d4 Nd6=) 21...Bd6 (21...f6!? 22.Bc3 Nd6+=) ½–½. Mandak,P – Melich,J, 1999.

4.e3 Na6 5.a3 g6 6.Bb2 Bg7 7.Nf3 0–0 8.Be2 d6 9.0–0+= Be6 10.Ng5 Nc5 11.Qc2 Ncd7 12.Ne6 fe6 13.d4 d5 14.c5 Qc7 15.Nc3 e5 16.b5 ed4 17.ed4 e5 18.de5 Ne5 19.Na4 (19.Rad1 Nfg4 20.g3 Nf3 21.Bf3 Rf3=) 19...Nfg4 20.h3?? (20.Be5 Ne5 21.bc6 Qc6 22.Rae1+=) 20...Nf3! (20...Nf3 21.Bf3 Qh2) 0–1. Petherick,Adrian – Short,Nigel, London, 1975.

4.c5 Qc7

5.Bb2 e6 6.e3 Be7 7.Nf3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 d6 11.d4 dc5 (11...b6 12.cd6 Bd6 13.Nc3=) 12.dc5 (better is 12.bc5 Nbd7 13.Bd3+=) 12...0–0?? (better is 12...Nbd7=) 13.Be5+– Qd7 14.Bb8 b6 15.cb6 Qb7 16.Ba7 Nd5 17.Nd4 (17.b5!? Nb6 18.Bb6 Qb6+–) 17...Bb4 18.Nd2 e5 19.Nc2 Bd6? (19...Ba5 20.Na3 Nb6 21.Bb6 Qb6 22.Qb6 Bb6+–) 20.Bc4 Be6 (20...Bc5 21.Nf3 e4 22.Nd2+–) 21.Ne4 Be7 22.0–0 Ne3 (22...Nb6 23.Be6 Qa7+–) 23.Ne3 Bc4 24.Nc4 Rd8 (24...c5 25.Qf3 Qc6 26.Rb1+–) 25.h3 (25.Na5 Qd7 26.b7 h6+–) 25...h6 (25...Rd5+–) 26.Na5 Qa6 27.Nc6 Rd3 (27...Re8 28.Ne7 Re7 29.Nc5+–) 28.Ne7 Kh8 29.Qb4 (29.Qf7 Rd8 30.Ng6 Kh7 31.Nf6) 29...f6 30.Nc5 Qa2 31.Nd3 1–0. gutes – zorec, kurnik, 2012.

5.Nf3 e5 6.Bb2 d6 7.e3 Be7 8.d4 e4 9.Nfd2 d5 10.Nc3 0–0 11.b5 Bf5 12.a4 Nbd7 13.a5 Be6 ½–½. Becker,Godelind – Mulde,Ralf, DESC, 2006.

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  • 1.b4 (4 players, 1 day/move)
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  • 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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